root/drivers/scsi/lpfc/lpfc_sli.c

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DEFINITIONS

This source file includes following definitions.
  1. lpfc_get_iocb_from_iocbq
  2. lpfc_sli4_pcimem_bcopy
  3. lpfc_sli4_wq_put
  4. lpfc_sli4_wq_release
  5. lpfc_sli4_mq_put
  6. lpfc_sli4_mq_release
  7. lpfc_sli4_eq_get
  8. lpfc_sli4_eq_clr_intr
  9. lpfc_sli4_if6_eq_clr_intr
  10. lpfc_sli4_write_eq_db
  11. lpfc_sli4_if6_write_eq_db
  12. __lpfc_sli4_consume_eqe
  13. lpfc_sli4_eq_flush
  14. lpfc_sli4_process_eq
  15. lpfc_sli4_cq_get
  16. __lpfc_sli4_consume_cqe
  17. lpfc_sli4_write_cq_db
  18. lpfc_sli4_if6_write_cq_db
  19. lpfc_sli4_rq_put
  20. lpfc_sli4_rq_release
  21. lpfc_cmd_iocb
  22. lpfc_resp_iocb
  23. __lpfc_sli_get_iocbq
  24. __lpfc_clear_active_sglq
  25. __lpfc_get_active_sglq
  26. lpfc_clr_rrq_active
  27. lpfc_handle_rrq_active
  28. lpfc_get_active_rrq
  29. lpfc_cleanup_vports_rrqs
  30. lpfc_test_rrq_active
  31. lpfc_set_rrq_active
  32. __lpfc_sli_get_els_sglq
  33. __lpfc_sli_get_nvmet_sglq
  34. lpfc_sli_get_iocbq
  35. __lpfc_sli_release_iocbq_s4
  36. __lpfc_sli_release_iocbq_s3
  37. __lpfc_sli_release_iocbq
  38. lpfc_sli_release_iocbq
  39. lpfc_sli_cancel_iocbs
  40. lpfc_sli_iocb_cmd_type
  41. lpfc_sli_ring_map
  42. lpfc_sli_ringtxcmpl_put
  43. lpfc_sli_ringtx_get
  44. lpfc_sli_next_iocb_slot
  45. lpfc_sli_next_iotag
  46. lpfc_sli_submit_iocb
  47. lpfc_sli_update_full_ring
  48. lpfc_sli_update_ring
  49. lpfc_sli_resume_iocb
  50. lpfc_sli_next_hbq_slot
  51. lpfc_sli_hbqbuf_free_all
  52. lpfc_sli_hbq_to_firmware
  53. lpfc_sli_hbq_to_firmware_s3
  54. lpfc_sli_hbq_to_firmware_s4
  55. lpfc_sli_hbqbuf_fill_hbqs
  56. lpfc_sli_hbqbuf_add_hbqs
  57. lpfc_sli_hbqbuf_init_hbqs
  58. lpfc_sli_hbqbuf_get
  59. lpfc_sli_rqbuf_get
  60. lpfc_sli_hbqbuf_find
  61. lpfc_sli_free_hbq
  62. lpfc_sli_chk_mbx_command
  63. lpfc_sli_wake_mbox_wait
  64. __lpfc_sli_rpi_release
  65. lpfc_sli_def_mbox_cmpl
  66. lpfc_sli4_unreg_rpi_cmpl_clr
  67. lpfc_sli_handle_mb_event
  68. lpfc_sli_get_buff
  69. lpfc_complete_unsol_iocb
  70. lpfc_sli_process_unsol_iocb
  71. lpfc_sli_iocbq_lookup
  72. lpfc_sli_iocbq_lookup_by_tag
  73. lpfc_sli_process_sol_iocb
  74. lpfc_sli_rsp_pointers_error
  75. lpfc_poll_eratt
  76. lpfc_sli_handle_fast_ring_event
  77. lpfc_sli_sp_handle_rspiocb
  78. lpfc_sli_handle_slow_ring_event
  79. lpfc_sli_handle_slow_ring_event_s3
  80. lpfc_sli_handle_slow_ring_event_s4
  81. lpfc_sli_abort_iocb_ring
  82. lpfc_sli_abort_fcp_rings
  83. lpfc_sli_flush_io_rings
  84. lpfc_sli_brdready_s3
  85. lpfc_sli_brdready_s4
  86. lpfc_sli_brdready
  87. lpfc_reset_barrier
  88. lpfc_sli_brdkill
  89. lpfc_sli_brdreset
  90. lpfc_sli4_brdreset
  91. lpfc_sli_brdrestart_s3
  92. lpfc_sli_brdrestart_s4
  93. lpfc_sli_brdrestart
  94. lpfc_sli_chipset_init
  95. lpfc_sli_hbq_count
  96. lpfc_sli_hbq_entry_count
  97. lpfc_sli_hbq_size
  98. lpfc_sli_hbq_setup
  99. lpfc_sli4_rb_setup
  100. lpfc_sli_config_port
  101. lpfc_sli_hba_setup
  102. lpfc_sli4_read_fcoe_params
  103. lpfc_sli4_read_rev
  104. lpfc_sli4_get_ctl_attr
  105. lpfc_sli4_retrieve_pport_name
  106. lpfc_sli4_arm_cqeq_intr
  107. lpfc_sli4_get_avail_extnt_rsrc
  108. lpfc_sli4_chk_avail_extnt_rsrc
  109. lpfc_sli4_cfg_post_extnts
  110. lpfc_sli4_alloc_extent
  111. lpfc_sli4_dealloc_extent
  112. lpfc_set_features
  113. lpfc_ras_stop_fwlog
  114. lpfc_sli4_ras_dma_free
  115. lpfc_sli4_ras_dma_alloc
  116. lpfc_sli4_ras_mbox_cmpl
  117. lpfc_sli4_ras_fwlog_init
  118. lpfc_sli4_ras_setup
  119. lpfc_sli4_alloc_resource_identifiers
  120. lpfc_sli4_dealloc_resource_identifiers
  121. lpfc_sli4_get_allocated_extnts
  122. lpfc_sli4_repost_sgl_list
  123. lpfc_sli4_repost_io_sgl_list
  124. lpfc_set_host_data
  125. lpfc_post_rq_buffer
  126. lpfc_sli4_hba_setup
  127. lpfc_mbox_timeout
  128. lpfc_sli4_mbox_completions_pending
  129. lpfc_sli4_process_missed_mbox_completions
  130. lpfc_mbox_timeout_handler
  131. lpfc_sli_issue_mbox_s3
  132. lpfc_sli4_async_mbox_block
  133. lpfc_sli4_async_mbox_unblock
  134. lpfc_sli4_wait_bmbx_ready
  135. lpfc_sli4_post_sync_mbox
  136. lpfc_sli_issue_mbox_s4
  137. lpfc_sli4_post_async_mbox
  138. lpfc_sli_issue_mbox
  139. lpfc_mbox_api_table_setup
  140. __lpfc_sli_ringtx_put
  141. lpfc_sli_next_iocb
  142. __lpfc_sli_issue_iocb_s3
  143. lpfc_sli4_bpl2sgl
  144. lpfc_sli4_iocb2wqe
  145. __lpfc_sli_issue_iocb_s4
  146. __lpfc_sli_issue_iocb
  147. lpfc_sli_api_table_setup
  148. lpfc_sli4_calc_ring
  149. lpfc_sli_issue_iocb
  150. lpfc_extra_ring_setup
  151. lpfc_sli_abts_err_handler
  152. lpfc_sli4_abts_err_handler
  153. lpfc_sli_async_event_handler
  154. lpfc_sli4_setup
  155. lpfc_sli_setup
  156. lpfc_sli4_queue_init
  157. lpfc_sli_queue_init
  158. lpfc_sli_mbox_sys_flush
  159. lpfc_sli_host_down
  160. lpfc_sli_hba_down
  161. lpfc_sli_pcimem_bcopy
  162. lpfc_sli_bemem_bcopy
  163. lpfc_sli_ringpostbuf_put
  164. lpfc_sli_get_buffer_tag
  165. lpfc_sli_ring_taggedbuf_get
  166. lpfc_sli_ringpostbuf_get
  167. lpfc_sli_abort_els_cmpl
  168. lpfc_ignore_els_cmpl
  169. lpfc_sli_abort_iotag_issue
  170. lpfc_sli_issue_abort_iotag
  171. lpfc_sli_hba_iocb_abort
  172. lpfc_sli_validate_fcp_iocb
  173. lpfc_sli_sum_iocb
  174. lpfc_sli_abort_fcp_cmpl
  175. lpfc_sli_abort_iocb
  176. lpfc_sli_abort_taskmgmt
  177. lpfc_sli_wake_iocb_wait
  178. lpfc_chk_iocb_flg
  179. lpfc_sli_issue_iocb_wait
  180. lpfc_sli_issue_mbox_wait
  181. lpfc_sli_mbox_sys_shutdown
  182. lpfc_sli_eratt_read
  183. lpfc_sli4_eratt_read
  184. lpfc_sli_check_eratt
  185. lpfc_intr_state_check
  186. lpfc_sli_sp_intr_handler
  187. lpfc_sli_fp_intr_handler
  188. lpfc_sli_intr_handler
  189. lpfc_sli4_els_xri_abort_event_proc
  190. lpfc_sli4_iocb_param_transfer
  191. lpfc_sli4_els_wcqe_to_rspiocbq
  192. lpfc_cq_event_setup
  193. lpfc_sli4_sp_handle_async_event
  194. lpfc_sli4_sp_handle_mbox_event
  195. lpfc_sli4_sp_handle_mcqe
  196. lpfc_sli4_sp_handle_els_wcqe
  197. lpfc_sli4_sp_handle_rel_wcqe
  198. lpfc_sli4_sp_handle_abort_xri_wcqe
  199. lpfc_sli4_sp_handle_rcqe
  200. lpfc_sli4_sp_handle_cqe
  201. lpfc_sli4_sp_handle_eqe
  202. __lpfc_sli4_process_cq
  203. __lpfc_sli4_sp_process_cq
  204. lpfc_sli4_sp_process_cq
  205. lpfc_sli4_dly_sp_process_cq
  206. lpfc_sli4_fp_handle_fcp_wcqe
  207. lpfc_sli4_fp_handle_rel_wcqe
  208. lpfc_sli4_nvmet_handle_rcqe
  209. lpfc_sli4_fp_handle_cqe
  210. lpfc_sli4_hba_handle_eqe
  211. __lpfc_sli4_hba_process_cq
  212. lpfc_sli4_hba_process_cq
  213. lpfc_sli4_dly_hba_process_cq
  214. lpfc_sli4_hba_intr_handler
  215. lpfc_sli4_intr_handler
  216. lpfc_sli4_poll_hbtimer
  217. lpfc_sli4_poll_eq
  218. lpfc_sli4_add_to_poll_list
  219. lpfc_sli4_remove_from_poll_list
  220. lpfc_sli4_cleanup_poll_list
  221. __lpfc_sli4_switch_eqmode
  222. lpfc_sli4_start_polling
  223. lpfc_sli4_stop_polling
  224. lpfc_sli4_queue_free
  225. lpfc_sli4_queue_alloc
  226. lpfc_dual_chute_pci_bar_map
  227. lpfc_modify_hba_eq_delay
  228. lpfc_eq_create
  229. lpfc_cq_create
  230. lpfc_cq_create_set
  231. lpfc_mq_create_fb_init
  232. lpfc_mq_create
  233. lpfc_wq_create
  234. lpfc_rq_create
  235. lpfc_mrq_create
  236. lpfc_eq_destroy
  237. lpfc_cq_destroy
  238. lpfc_mq_destroy
  239. lpfc_wq_destroy
  240. lpfc_rq_destroy
  241. lpfc_sli4_post_sgl
  242. lpfc_sli4_alloc_xri
  243. __lpfc_sli4_free_xri
  244. lpfc_sli4_free_xri
  245. lpfc_sli4_next_xritag
  246. lpfc_sli4_post_sgl_list
  247. lpfc_sli4_post_io_sgl_block
  248. lpfc_sli4_post_io_sgl_list
  249. lpfc_fc_frame_check
  250. lpfc_fc_hdr_get_vfi
  251. lpfc_fc_frame_to_vport
  252. lpfc_update_rcv_time_stamp
  253. lpfc_cleanup_rcv_buffers
  254. lpfc_rcv_seq_check_edtov
  255. lpfc_fc_frame_add
  256. lpfc_sli4_abort_partial_seq
  257. lpfc_sli4_abort_ulp_seq
  258. lpfc_sli4_seq_abort_rsp_cmpl
  259. lpfc_sli4_xri_inrange
  260. lpfc_sli4_seq_abort_rsp
  261. lpfc_sli4_handle_unsol_abort
  262. lpfc_seq_complete
  263. lpfc_prep_seq
  264. lpfc_sli4_send_seq_to_ulp
  265. lpfc_sli4_mds_loopback_cmpl
  266. lpfc_sli4_handle_mds_loopback
  267. lpfc_sli4_handle_received_buffer
  268. lpfc_sli4_post_all_rpi_hdrs
  269. lpfc_sli4_post_rpi_hdr
  270. lpfc_sli4_alloc_rpi
  271. __lpfc_sli4_free_rpi
  272. lpfc_sli4_free_rpi
  273. lpfc_sli4_remove_rpis
  274. lpfc_sli4_resume_rpi
  275. lpfc_sli4_init_vpi
  276. lpfc_mbx_cmpl_add_fcf_record
  277. lpfc_sli4_add_fcf_record
  278. lpfc_sli4_build_dflt_fcf_record
  279. lpfc_sli4_fcf_scan_read_fcf_rec
  280. lpfc_sli4_fcf_rr_read_fcf_rec
  281. lpfc_sli4_read_fcf_rec
  282. lpfc_check_next_fcf_pri_level
  283. lpfc_sli4_fcf_rr_next_index_get
  284. lpfc_sli4_fcf_rr_index_set
  285. lpfc_sli4_fcf_rr_index_clear
  286. lpfc_mbx_cmpl_redisc_fcf_table
  287. lpfc_sli4_redisc_fcf_table
  288. lpfc_sli4_fcf_dead_failthrough
  289. lpfc_sli_get_config_region23
  290. lpfc_sli4_get_config_region23
  291. lpfc_sli_read_link_ste
  292. lpfc_wr_object
  293. lpfc_cleanup_pending_mbox
  294. lpfc_drain_txq
  295. lpfc_wqe_bpl2sgl
  296. lpfc_sli4_issue_wqe
  297. lpfc_snapshot_mxp
  298. lpfc_adjust_pvt_pool_count
  299. lpfc_adjust_high_watermark
  300. lpfc_move_xri_pvt_to_pbl
  301. _lpfc_move_xri_pbl_to_pvt
  302. lpfc_move_xri_pbl_to_pvt
  303. lpfc_keep_pvt_pool_above_lowwm
  304. lpfc_release_io_buf
  305. lpfc_get_io_buf_from_private_pool
  306. lpfc_get_io_buf_from_expedite_pool
  307. lpfc_get_io_buf_from_multixri_pools
  308. lpfc_io_buf
  309. lpfc_get_io_buf
  310. lpfc_get_sgl_per_hdwq
  311. lpfc_put_sgl_per_hdwq
  312. lpfc_free_sgl_per_hdwq
  313. lpfc_get_cmd_rsp_buf_per_hdwq
  314. lpfc_put_cmd_rsp_buf_per_hdwq
  315. lpfc_free_cmd_rsp_buf_per_hdwq
   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2017-2019 Broadcom. All Rights Reserved. The term *
   5  * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.  *
   6  * Copyright (C) 2004-2016 Emulex.  All rights reserved.           *
   7  * EMULEX and SLI are trademarks of Emulex.                        *
   8  * www.broadcom.com                                                *
   9  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
  10  *                                                                 *
  11  * This program is free software; you can redistribute it and/or   *
  12  * modify it under the terms of version 2 of the GNU General       *
  13  * Public License as published by the Free Software Foundation.    *
  14  * This program is distributed in the hope that it will be useful. *
  15  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  16  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  17  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  18  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  19  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  20  * more details, a copy of which can be found in the file COPYING  *
  21  * included with this package.                                     *
  22  *******************************************************************/
  23 
  24 #include <linux/blkdev.h>
  25 #include <linux/pci.h>
  26 #include <linux/interrupt.h>
  27 #include <linux/delay.h>
  28 #include <linux/slab.h>
  29 #include <linux/lockdep.h>
  30 
  31 #include <scsi/scsi.h>
  32 #include <scsi/scsi_cmnd.h>
  33 #include <scsi/scsi_device.h>
  34 #include <scsi/scsi_host.h>
  35 #include <scsi/scsi_transport_fc.h>
  36 #include <scsi/fc/fc_fs.h>
  37 #include <linux/aer.h>
  38 #ifdef CONFIG_X86
  39 #include <asm/set_memory.h>
  40 #endif
  41 
  42 #include <linux/nvme-fc-driver.h>
  43 
  44 #include "lpfc_hw4.h"
  45 #include "lpfc_hw.h"
  46 #include "lpfc_sli.h"
  47 #include "lpfc_sli4.h"
  48 #include "lpfc_nl.h"
  49 #include "lpfc_disc.h"
  50 #include "lpfc.h"
  51 #include "lpfc_scsi.h"
  52 #include "lpfc_nvme.h"
  53 #include "lpfc_nvmet.h"
  54 #include "lpfc_crtn.h"
  55 #include "lpfc_logmsg.h"
  56 #include "lpfc_compat.h"
  57 #include "lpfc_debugfs.h"
  58 #include "lpfc_vport.h"
  59 #include "lpfc_version.h"
  60 
  61 /* There are only four IOCB completion types. */
  62 typedef enum _lpfc_iocb_type {
  63         LPFC_UNKNOWN_IOCB,
  64         LPFC_UNSOL_IOCB,
  65         LPFC_SOL_IOCB,
  66         LPFC_ABORT_IOCB
  67 } lpfc_iocb_type;
  68 
  69 
  70 /* Provide function prototypes local to this module. */
  71 static int lpfc_sli_issue_mbox_s4(struct lpfc_hba *, LPFC_MBOXQ_t *,
  72                                   uint32_t);
  73 static int lpfc_sli4_read_rev(struct lpfc_hba *, LPFC_MBOXQ_t *,
  74                               uint8_t *, uint32_t *);
  75 static struct lpfc_iocbq *lpfc_sli4_els_wcqe_to_rspiocbq(struct lpfc_hba *,
  76                                                          struct lpfc_iocbq *);
  77 static void lpfc_sli4_send_seq_to_ulp(struct lpfc_vport *,
  78                                       struct hbq_dmabuf *);
  79 static void lpfc_sli4_handle_mds_loopback(struct lpfc_vport *vport,
  80                                           struct hbq_dmabuf *dmabuf);
  81 static bool lpfc_sli4_fp_handle_cqe(struct lpfc_hba *phba,
  82                                    struct lpfc_queue *cq, struct lpfc_cqe *cqe);
  83 static int lpfc_sli4_post_sgl_list(struct lpfc_hba *, struct list_head *,
  84                                        int);
  85 static void lpfc_sli4_hba_handle_eqe(struct lpfc_hba *phba,
  86                                      struct lpfc_queue *eq,
  87                                      struct lpfc_eqe *eqe);
  88 static bool lpfc_sli4_mbox_completions_pending(struct lpfc_hba *phba);
  89 static bool lpfc_sli4_process_missed_mbox_completions(struct lpfc_hba *phba);
  90 
  91 static IOCB_t *
  92 lpfc_get_iocb_from_iocbq(struct lpfc_iocbq *iocbq)
  93 {
  94         return &iocbq->iocb;
  95 }
  96 
  97 #if defined(CONFIG_64BIT) && defined(__LITTLE_ENDIAN)
  98 /**
  99  * lpfc_sli4_pcimem_bcopy - SLI4 memory copy function
 100  * @srcp: Source memory pointer.
 101  * @destp: Destination memory pointer.
 102  * @cnt: Number of words required to be copied.
 103  *       Must be a multiple of sizeof(uint64_t)
 104  *
 105  * This function is used for copying data between driver memory
 106  * and the SLI WQ. This function also changes the endianness
 107  * of each word if native endianness is different from SLI
 108  * endianness. This function can be called with or without
 109  * lock.
 110  **/
 111 static void
 112 lpfc_sli4_pcimem_bcopy(void *srcp, void *destp, uint32_t cnt)
 113 {
 114         uint64_t *src = srcp;
 115         uint64_t *dest = destp;
 116         int i;
 117 
 118         for (i = 0; i < (int)cnt; i += sizeof(uint64_t))
 119                 *dest++ = *src++;
 120 }
 121 #else
 122 #define lpfc_sli4_pcimem_bcopy(a, b, c) lpfc_sli_pcimem_bcopy(a, b, c)
 123 #endif
 124 
 125 /**
 126  * lpfc_sli4_wq_put - Put a Work Queue Entry on an Work Queue
 127  * @q: The Work Queue to operate on.
 128  * @wqe: The work Queue Entry to put on the Work queue.
 129  *
 130  * This routine will copy the contents of @wqe to the next available entry on
 131  * the @q. This function will then ring the Work Queue Doorbell to signal the
 132  * HBA to start processing the Work Queue Entry. This function returns 0 if
 133  * successful. If no entries are available on @q then this function will return
 134  * -ENOMEM.
 135  * The caller is expected to hold the hbalock when calling this routine.
 136  **/
 137 static int
 138 lpfc_sli4_wq_put(struct lpfc_queue *q, union lpfc_wqe128 *wqe)
 139 {
 140         union lpfc_wqe *temp_wqe;
 141         struct lpfc_register doorbell;
 142         uint32_t host_index;
 143         uint32_t idx;
 144         uint32_t i = 0;
 145         uint8_t *tmp;
 146         u32 if_type;
 147 
 148         /* sanity check on queue memory */
 149         if (unlikely(!q))
 150                 return -ENOMEM;
 151         temp_wqe = lpfc_sli4_qe(q, q->host_index);
 152 
 153         /* If the host has not yet processed the next entry then we are done */
 154         idx = ((q->host_index + 1) % q->entry_count);
 155         if (idx == q->hba_index) {
 156                 q->WQ_overflow++;
 157                 return -EBUSY;
 158         }
 159         q->WQ_posted++;
 160         /* set consumption flag every once in a while */
 161         if (!((q->host_index + 1) % q->notify_interval))
 162                 bf_set(wqe_wqec, &wqe->generic.wqe_com, 1);
 163         else
 164                 bf_set(wqe_wqec, &wqe->generic.wqe_com, 0);
 165         if (q->phba->sli3_options & LPFC_SLI4_PHWQ_ENABLED)
 166                 bf_set(wqe_wqid, &wqe->generic.wqe_com, q->queue_id);
 167         lpfc_sli4_pcimem_bcopy(wqe, temp_wqe, q->entry_size);
 168         if (q->dpp_enable && q->phba->cfg_enable_dpp) {
 169                 /* write to DPP aperture taking advatage of Combined Writes */
 170                 tmp = (uint8_t *)temp_wqe;
 171 #ifdef __raw_writeq
 172                 for (i = 0; i < q->entry_size; i += sizeof(uint64_t))
 173                         __raw_writeq(*((uint64_t *)(tmp + i)),
 174                                         q->dpp_regaddr + i);
 175 #else
 176                 for (i = 0; i < q->entry_size; i += sizeof(uint32_t))
 177                         __raw_writel(*((uint32_t *)(tmp + i)),
 178                                         q->dpp_regaddr + i);
 179 #endif
 180         }
 181         /* ensure WQE bcopy and DPP flushed before doorbell write */
 182         wmb();
 183 
 184         /* Update the host index before invoking device */
 185         host_index = q->host_index;
 186 
 187         q->host_index = idx;
 188 
 189         /* Ring Doorbell */
 190         doorbell.word0 = 0;
 191         if (q->db_format == LPFC_DB_LIST_FORMAT) {
 192                 if (q->dpp_enable && q->phba->cfg_enable_dpp) {
 193                         bf_set(lpfc_if6_wq_db_list_fm_num_posted, &doorbell, 1);
 194                         bf_set(lpfc_if6_wq_db_list_fm_dpp, &doorbell, 1);
 195                         bf_set(lpfc_if6_wq_db_list_fm_dpp_id, &doorbell,
 196                             q->dpp_id);
 197                         bf_set(lpfc_if6_wq_db_list_fm_id, &doorbell,
 198                             q->queue_id);
 199                 } else {
 200                         bf_set(lpfc_wq_db_list_fm_num_posted, &doorbell, 1);
 201                         bf_set(lpfc_wq_db_list_fm_id, &doorbell, q->queue_id);
 202 
 203                         /* Leave bits <23:16> clear for if_type 6 dpp */
 204                         if_type = bf_get(lpfc_sli_intf_if_type,
 205                                          &q->phba->sli4_hba.sli_intf);
 206                         if (if_type != LPFC_SLI_INTF_IF_TYPE_6)
 207                                 bf_set(lpfc_wq_db_list_fm_index, &doorbell,
 208                                        host_index);
 209                 }
 210         } else if (q->db_format == LPFC_DB_RING_FORMAT) {
 211                 bf_set(lpfc_wq_db_ring_fm_num_posted, &doorbell, 1);
 212                 bf_set(lpfc_wq_db_ring_fm_id, &doorbell, q->queue_id);
 213         } else {
 214                 return -EINVAL;
 215         }
 216         writel(doorbell.word0, q->db_regaddr);
 217 
 218         return 0;
 219 }
 220 
 221 /**
 222  * lpfc_sli4_wq_release - Updates internal hba index for WQ
 223  * @q: The Work Queue to operate on.
 224  * @index: The index to advance the hba index to.
 225  *
 226  * This routine will update the HBA index of a queue to reflect consumption of
 227  * Work Queue Entries by the HBA. When the HBA indicates that it has consumed
 228  * an entry the host calls this function to update the queue's internal
 229  * pointers. This routine returns the number of entries that were consumed by
 230  * the HBA.
 231  **/
 232 static uint32_t
 233 lpfc_sli4_wq_release(struct lpfc_queue *q, uint32_t index)
 234 {
 235         uint32_t released = 0;
 236 
 237         /* sanity check on queue memory */
 238         if (unlikely(!q))
 239                 return 0;
 240 
 241         if (q->hba_index == index)
 242                 return 0;
 243         do {
 244                 q->hba_index = ((q->hba_index + 1) % q->entry_count);
 245                 released++;
 246         } while (q->hba_index != index);
 247         return released;
 248 }
 249 
 250 /**
 251  * lpfc_sli4_mq_put - Put a Mailbox Queue Entry on an Mailbox Queue
 252  * @q: The Mailbox Queue to operate on.
 253  * @wqe: The Mailbox Queue Entry to put on the Work queue.
 254  *
 255  * This routine will copy the contents of @mqe to the next available entry on
 256  * the @q. This function will then ring the Work Queue Doorbell to signal the
 257  * HBA to start processing the Work Queue Entry. This function returns 0 if
 258  * successful. If no entries are available on @q then this function will return
 259  * -ENOMEM.
 260  * The caller is expected to hold the hbalock when calling this routine.
 261  **/
 262 static uint32_t
 263 lpfc_sli4_mq_put(struct lpfc_queue *q, struct lpfc_mqe *mqe)
 264 {
 265         struct lpfc_mqe *temp_mqe;
 266         struct lpfc_register doorbell;
 267 
 268         /* sanity check on queue memory */
 269         if (unlikely(!q))
 270                 return -ENOMEM;
 271         temp_mqe = lpfc_sli4_qe(q, q->host_index);
 272 
 273         /* If the host has not yet processed the next entry then we are done */
 274         if (((q->host_index + 1) % q->entry_count) == q->hba_index)
 275                 return -ENOMEM;
 276         lpfc_sli4_pcimem_bcopy(mqe, temp_mqe, q->entry_size);
 277         /* Save off the mailbox pointer for completion */
 278         q->phba->mbox = (MAILBOX_t *)temp_mqe;
 279 
 280         /* Update the host index before invoking device */
 281         q->host_index = ((q->host_index + 1) % q->entry_count);
 282 
 283         /* Ring Doorbell */
 284         doorbell.word0 = 0;
 285         bf_set(lpfc_mq_doorbell_num_posted, &doorbell, 1);
 286         bf_set(lpfc_mq_doorbell_id, &doorbell, q->queue_id);
 287         writel(doorbell.word0, q->phba->sli4_hba.MQDBregaddr);
 288         return 0;
 289 }
 290 
 291 /**
 292  * lpfc_sli4_mq_release - Updates internal hba index for MQ
 293  * @q: The Mailbox Queue to operate on.
 294  *
 295  * This routine will update the HBA index of a queue to reflect consumption of
 296  * a Mailbox Queue Entry by the HBA. When the HBA indicates that it has consumed
 297  * an entry the host calls this function to update the queue's internal
 298  * pointers. This routine returns the number of entries that were consumed by
 299  * the HBA.
 300  **/
 301 static uint32_t
 302 lpfc_sli4_mq_release(struct lpfc_queue *q)
 303 {
 304         /* sanity check on queue memory */
 305         if (unlikely(!q))
 306                 return 0;
 307 
 308         /* Clear the mailbox pointer for completion */
 309         q->phba->mbox = NULL;
 310         q->hba_index = ((q->hba_index + 1) % q->entry_count);
 311         return 1;
 312 }
 313 
 314 /**
 315  * lpfc_sli4_eq_get - Gets the next valid EQE from a EQ
 316  * @q: The Event Queue to get the first valid EQE from
 317  *
 318  * This routine will get the first valid Event Queue Entry from @q, update
 319  * the queue's internal hba index, and return the EQE. If no valid EQEs are in
 320  * the Queue (no more work to do), or the Queue is full of EQEs that have been
 321  * processed, but not popped back to the HBA then this routine will return NULL.
 322  **/
 323 static struct lpfc_eqe *
 324 lpfc_sli4_eq_get(struct lpfc_queue *q)
 325 {
 326         struct lpfc_eqe *eqe;
 327 
 328         /* sanity check on queue memory */
 329         if (unlikely(!q))
 330                 return NULL;
 331         eqe = lpfc_sli4_qe(q, q->host_index);
 332 
 333         /* If the next EQE is not valid then we are done */
 334         if (bf_get_le32(lpfc_eqe_valid, eqe) != q->qe_valid)
 335                 return NULL;
 336 
 337         /*
 338          * insert barrier for instruction interlock : data from the hardware
 339          * must have the valid bit checked before it can be copied and acted
 340          * upon. Speculative instructions were allowing a bcopy at the start
 341          * of lpfc_sli4_fp_handle_wcqe(), which is called immediately
 342          * after our return, to copy data before the valid bit check above
 343          * was done. As such, some of the copied data was stale. The barrier
 344          * ensures the check is before any data is copied.
 345          */
 346         mb();
 347         return eqe;
 348 }
 349 
 350 /**
 351  * lpfc_sli4_eq_clr_intr - Turn off interrupts from this EQ
 352  * @q: The Event Queue to disable interrupts
 353  *
 354  **/
 355 void
 356 lpfc_sli4_eq_clr_intr(struct lpfc_queue *q)
 357 {
 358         struct lpfc_register doorbell;
 359 
 360         doorbell.word0 = 0;
 361         bf_set(lpfc_eqcq_doorbell_eqci, &doorbell, 1);
 362         bf_set(lpfc_eqcq_doorbell_qt, &doorbell, LPFC_QUEUE_TYPE_EVENT);
 363         bf_set(lpfc_eqcq_doorbell_eqid_hi, &doorbell,
 364                 (q->queue_id >> LPFC_EQID_HI_FIELD_SHIFT));
 365         bf_set(lpfc_eqcq_doorbell_eqid_lo, &doorbell, q->queue_id);
 366         writel(doorbell.word0, q->phba->sli4_hba.EQDBregaddr);
 367 }
 368 
 369 /**
 370  * lpfc_sli4_if6_eq_clr_intr - Turn off interrupts from this EQ
 371  * @q: The Event Queue to disable interrupts
 372  *
 373  **/
 374 void
 375 lpfc_sli4_if6_eq_clr_intr(struct lpfc_queue *q)
 376 {
 377         struct lpfc_register doorbell;
 378 
 379         doorbell.word0 = 0;
 380         bf_set(lpfc_if6_eq_doorbell_eqid, &doorbell, q->queue_id);
 381         writel(doorbell.word0, q->phba->sli4_hba.EQDBregaddr);
 382 }
 383 
 384 /**
 385  * lpfc_sli4_write_eq_db - write EQ DB for eqe's consumed or arm state
 386  * @phba: adapter with EQ
 387  * @q: The Event Queue that the host has completed processing for.
 388  * @count: Number of elements that have been consumed
 389  * @arm: Indicates whether the host wants to arms this CQ.
 390  *
 391  * This routine will notify the HBA, by ringing the doorbell, that count
 392  * number of EQEs have been processed. The @arm parameter indicates whether
 393  * the queue should be rearmed when ringing the doorbell.
 394  **/
 395 void
 396 lpfc_sli4_write_eq_db(struct lpfc_hba *phba, struct lpfc_queue *q,
 397                      uint32_t count, bool arm)
 398 {
 399         struct lpfc_register doorbell;
 400 
 401         /* sanity check on queue memory */
 402         if (unlikely(!q || (count == 0 && !arm)))
 403                 return;
 404 
 405         /* ring doorbell for number popped */
 406         doorbell.word0 = 0;
 407         if (arm) {
 408                 bf_set(lpfc_eqcq_doorbell_arm, &doorbell, 1);
 409                 bf_set(lpfc_eqcq_doorbell_eqci, &doorbell, 1);
 410         }
 411         bf_set(lpfc_eqcq_doorbell_num_released, &doorbell, count);
 412         bf_set(lpfc_eqcq_doorbell_qt, &doorbell, LPFC_QUEUE_TYPE_EVENT);
 413         bf_set(lpfc_eqcq_doorbell_eqid_hi, &doorbell,
 414                         (q->queue_id >> LPFC_EQID_HI_FIELD_SHIFT));
 415         bf_set(lpfc_eqcq_doorbell_eqid_lo, &doorbell, q->queue_id);
 416         writel(doorbell.word0, q->phba->sli4_hba.EQDBregaddr);
 417         /* PCI read to flush PCI pipeline on re-arming for INTx mode */
 418         if ((q->phba->intr_type == INTx) && (arm == LPFC_QUEUE_REARM))
 419                 readl(q->phba->sli4_hba.EQDBregaddr);
 420 }
 421 
 422 /**
 423  * lpfc_sli4_if6_write_eq_db - write EQ DB for eqe's consumed or arm state
 424  * @phba: adapter with EQ
 425  * @q: The Event Queue that the host has completed processing for.
 426  * @count: Number of elements that have been consumed
 427  * @arm: Indicates whether the host wants to arms this CQ.
 428  *
 429  * This routine will notify the HBA, by ringing the doorbell, that count
 430  * number of EQEs have been processed. The @arm parameter indicates whether
 431  * the queue should be rearmed when ringing the doorbell.
 432  **/
 433 void
 434 lpfc_sli4_if6_write_eq_db(struct lpfc_hba *phba, struct lpfc_queue *q,
 435                           uint32_t count, bool arm)
 436 {
 437         struct lpfc_register doorbell;
 438 
 439         /* sanity check on queue memory */
 440         if (unlikely(!q || (count == 0 && !arm)))
 441                 return;
 442 
 443         /* ring doorbell for number popped */
 444         doorbell.word0 = 0;
 445         if (arm)
 446                 bf_set(lpfc_if6_eq_doorbell_arm, &doorbell, 1);
 447         bf_set(lpfc_if6_eq_doorbell_num_released, &doorbell, count);
 448         bf_set(lpfc_if6_eq_doorbell_eqid, &doorbell, q->queue_id);
 449         writel(doorbell.word0, q->phba->sli4_hba.EQDBregaddr);
 450         /* PCI read to flush PCI pipeline on re-arming for INTx mode */
 451         if ((q->phba->intr_type == INTx) && (arm == LPFC_QUEUE_REARM))
 452                 readl(q->phba->sli4_hba.EQDBregaddr);
 453 }
 454 
 455 static void
 456 __lpfc_sli4_consume_eqe(struct lpfc_hba *phba, struct lpfc_queue *eq,
 457                         struct lpfc_eqe *eqe)
 458 {
 459         if (!phba->sli4_hba.pc_sli4_params.eqav)
 460                 bf_set_le32(lpfc_eqe_valid, eqe, 0);
 461 
 462         eq->host_index = ((eq->host_index + 1) % eq->entry_count);
 463 
 464         /* if the index wrapped around, toggle the valid bit */
 465         if (phba->sli4_hba.pc_sli4_params.eqav && !eq->host_index)
 466                 eq->qe_valid = (eq->qe_valid) ? 0 : 1;
 467 }
 468 
 469 static void
 470 lpfc_sli4_eq_flush(struct lpfc_hba *phba, struct lpfc_queue *eq)
 471 {
 472         struct lpfc_eqe *eqe;
 473         uint32_t count = 0;
 474 
 475         /* walk all the EQ entries and drop on the floor */
 476         eqe = lpfc_sli4_eq_get(eq);
 477         while (eqe) {
 478                 __lpfc_sli4_consume_eqe(phba, eq, eqe);
 479                 count++;
 480                 eqe = lpfc_sli4_eq_get(eq);
 481         }
 482 
 483         /* Clear and re-arm the EQ */
 484         phba->sli4_hba.sli4_write_eq_db(phba, eq, count, LPFC_QUEUE_REARM);
 485 }
 486 
 487 static int
 488 lpfc_sli4_process_eq(struct lpfc_hba *phba, struct lpfc_queue *eq,
 489                      uint8_t rearm)
 490 {
 491         struct lpfc_eqe *eqe;
 492         int count = 0, consumed = 0;
 493 
 494         if (cmpxchg(&eq->queue_claimed, 0, 1) != 0)
 495                 goto rearm_and_exit;
 496 
 497         eqe = lpfc_sli4_eq_get(eq);
 498         while (eqe) {
 499                 lpfc_sli4_hba_handle_eqe(phba, eq, eqe);
 500                 __lpfc_sli4_consume_eqe(phba, eq, eqe);
 501 
 502                 consumed++;
 503                 if (!(++count % eq->max_proc_limit))
 504                         break;
 505 
 506                 if (!(count % eq->notify_interval)) {
 507                         phba->sli4_hba.sli4_write_eq_db(phba, eq, consumed,
 508                                                         LPFC_QUEUE_NOARM);
 509                         consumed = 0;
 510                 }
 511 
 512                 eqe = lpfc_sli4_eq_get(eq);
 513         }
 514         eq->EQ_processed += count;
 515 
 516         /* Track the max number of EQEs processed in 1 intr */
 517         if (count > eq->EQ_max_eqe)
 518                 eq->EQ_max_eqe = count;
 519 
 520         eq->queue_claimed = 0;
 521 
 522 rearm_and_exit:
 523         /* Always clear the EQ. */
 524         phba->sli4_hba.sli4_write_eq_db(phba, eq, consumed, rearm);
 525 
 526         return count;
 527 }
 528 
 529 /**
 530  * lpfc_sli4_cq_get - Gets the next valid CQE from a CQ
 531  * @q: The Completion Queue to get the first valid CQE from
 532  *
 533  * This routine will get the first valid Completion Queue Entry from @q, update
 534  * the queue's internal hba index, and return the CQE. If no valid CQEs are in
 535  * the Queue (no more work to do), or the Queue is full of CQEs that have been
 536  * processed, but not popped back to the HBA then this routine will return NULL.
 537  **/
 538 static struct lpfc_cqe *
 539 lpfc_sli4_cq_get(struct lpfc_queue *q)
 540 {
 541         struct lpfc_cqe *cqe;
 542 
 543         /* sanity check on queue memory */
 544         if (unlikely(!q))
 545                 return NULL;
 546         cqe = lpfc_sli4_qe(q, q->host_index);
 547 
 548         /* If the next CQE is not valid then we are done */
 549         if (bf_get_le32(lpfc_cqe_valid, cqe) != q->qe_valid)
 550                 return NULL;
 551 
 552         /*
 553          * insert barrier for instruction interlock : data from the hardware
 554          * must have the valid bit checked before it can be copied and acted
 555          * upon. Given what was seen in lpfc_sli4_cq_get() of speculative
 556          * instructions allowing action on content before valid bit checked,
 557          * add barrier here as well. May not be needed as "content" is a
 558          * single 32-bit entity here (vs multi word structure for cq's).
 559          */
 560         mb();
 561         return cqe;
 562 }
 563 
 564 static void
 565 __lpfc_sli4_consume_cqe(struct lpfc_hba *phba, struct lpfc_queue *cq,
 566                         struct lpfc_cqe *cqe)
 567 {
 568         if (!phba->sli4_hba.pc_sli4_params.cqav)
 569                 bf_set_le32(lpfc_cqe_valid, cqe, 0);
 570 
 571         cq->host_index = ((cq->host_index + 1) % cq->entry_count);
 572 
 573         /* if the index wrapped around, toggle the valid bit */
 574         if (phba->sli4_hba.pc_sli4_params.cqav && !cq->host_index)
 575                 cq->qe_valid = (cq->qe_valid) ? 0 : 1;
 576 }
 577 
 578 /**
 579  * lpfc_sli4_write_cq_db - write cq DB for entries consumed or arm state.
 580  * @phba: the adapter with the CQ
 581  * @q: The Completion Queue that the host has completed processing for.
 582  * @count: the number of elements that were consumed
 583  * @arm: Indicates whether the host wants to arms this CQ.
 584  *
 585  * This routine will notify the HBA, by ringing the doorbell, that the
 586  * CQEs have been processed. The @arm parameter specifies whether the
 587  * queue should be rearmed when ringing the doorbell.
 588  **/
 589 void
 590 lpfc_sli4_write_cq_db(struct lpfc_hba *phba, struct lpfc_queue *q,
 591                      uint32_t count, bool arm)
 592 {
 593         struct lpfc_register doorbell;
 594 
 595         /* sanity check on queue memory */
 596         if (unlikely(!q || (count == 0 && !arm)))
 597                 return;
 598 
 599         /* ring doorbell for number popped */
 600         doorbell.word0 = 0;
 601         if (arm)
 602                 bf_set(lpfc_eqcq_doorbell_arm, &doorbell, 1);
 603         bf_set(lpfc_eqcq_doorbell_num_released, &doorbell, count);
 604         bf_set(lpfc_eqcq_doorbell_qt, &doorbell, LPFC_QUEUE_TYPE_COMPLETION);
 605         bf_set(lpfc_eqcq_doorbell_cqid_hi, &doorbell,
 606                         (q->queue_id >> LPFC_CQID_HI_FIELD_SHIFT));
 607         bf_set(lpfc_eqcq_doorbell_cqid_lo, &doorbell, q->queue_id);
 608         writel(doorbell.word0, q->phba->sli4_hba.CQDBregaddr);
 609 }
 610 
 611 /**
 612  * lpfc_sli4_if6_write_cq_db - write cq DB for entries consumed or arm state.
 613  * @phba: the adapter with the CQ
 614  * @q: The Completion Queue that the host has completed processing for.
 615  * @count: the number of elements that were consumed
 616  * @arm: Indicates whether the host wants to arms this CQ.
 617  *
 618  * This routine will notify the HBA, by ringing the doorbell, that the
 619  * CQEs have been processed. The @arm parameter specifies whether the
 620  * queue should be rearmed when ringing the doorbell.
 621  **/
 622 void
 623 lpfc_sli4_if6_write_cq_db(struct lpfc_hba *phba, struct lpfc_queue *q,
 624                          uint32_t count, bool arm)
 625 {
 626         struct lpfc_register doorbell;
 627 
 628         /* sanity check on queue memory */
 629         if (unlikely(!q || (count == 0 && !arm)))
 630                 return;
 631 
 632         /* ring doorbell for number popped */
 633         doorbell.word0 = 0;
 634         if (arm)
 635                 bf_set(lpfc_if6_cq_doorbell_arm, &doorbell, 1);
 636         bf_set(lpfc_if6_cq_doorbell_num_released, &doorbell, count);
 637         bf_set(lpfc_if6_cq_doorbell_cqid, &doorbell, q->queue_id);
 638         writel(doorbell.word0, q->phba->sli4_hba.CQDBregaddr);
 639 }
 640 
 641 /**
 642  * lpfc_sli4_rq_put - Put a Receive Buffer Queue Entry on a Receive Queue
 643  * @q: The Header Receive Queue to operate on.
 644  * @wqe: The Receive Queue Entry to put on the Receive queue.
 645  *
 646  * This routine will copy the contents of @wqe to the next available entry on
 647  * the @q. This function will then ring the Receive Queue Doorbell to signal the
 648  * HBA to start processing the Receive Queue Entry. This function returns the
 649  * index that the rqe was copied to if successful. If no entries are available
 650  * on @q then this function will return -ENOMEM.
 651  * The caller is expected to hold the hbalock when calling this routine.
 652  **/
 653 int
 654 lpfc_sli4_rq_put(struct lpfc_queue *hq, struct lpfc_queue *dq,
 655                  struct lpfc_rqe *hrqe, struct lpfc_rqe *drqe)
 656 {
 657         struct lpfc_rqe *temp_hrqe;
 658         struct lpfc_rqe *temp_drqe;
 659         struct lpfc_register doorbell;
 660         int hq_put_index;
 661         int dq_put_index;
 662 
 663         /* sanity check on queue memory */
 664         if (unlikely(!hq) || unlikely(!dq))
 665                 return -ENOMEM;
 666         hq_put_index = hq->host_index;
 667         dq_put_index = dq->host_index;
 668         temp_hrqe = lpfc_sli4_qe(hq, hq_put_index);
 669         temp_drqe = lpfc_sli4_qe(dq, dq_put_index);
 670 
 671         if (hq->type != LPFC_HRQ || dq->type != LPFC_DRQ)
 672                 return -EINVAL;
 673         if (hq_put_index != dq_put_index)
 674                 return -EINVAL;
 675         /* If the host has not yet processed the next entry then we are done */
 676         if (((hq_put_index + 1) % hq->entry_count) == hq->hba_index)
 677                 return -EBUSY;
 678         lpfc_sli4_pcimem_bcopy(hrqe, temp_hrqe, hq->entry_size);
 679         lpfc_sli4_pcimem_bcopy(drqe, temp_drqe, dq->entry_size);
 680 
 681         /* Update the host index to point to the next slot */
 682         hq->host_index = ((hq_put_index + 1) % hq->entry_count);
 683         dq->host_index = ((dq_put_index + 1) % dq->entry_count);
 684         hq->RQ_buf_posted++;
 685 
 686         /* Ring The Header Receive Queue Doorbell */
 687         if (!(hq->host_index % hq->notify_interval)) {
 688                 doorbell.word0 = 0;
 689                 if (hq->db_format == LPFC_DB_RING_FORMAT) {
 690                         bf_set(lpfc_rq_db_ring_fm_num_posted, &doorbell,
 691                                hq->notify_interval);
 692                         bf_set(lpfc_rq_db_ring_fm_id, &doorbell, hq->queue_id);
 693                 } else if (hq->db_format == LPFC_DB_LIST_FORMAT) {
 694                         bf_set(lpfc_rq_db_list_fm_num_posted, &doorbell,
 695                                hq->notify_interval);
 696                         bf_set(lpfc_rq_db_list_fm_index, &doorbell,
 697                                hq->host_index);
 698                         bf_set(lpfc_rq_db_list_fm_id, &doorbell, hq->queue_id);
 699                 } else {
 700                         return -EINVAL;
 701                 }
 702                 writel(doorbell.word0, hq->db_regaddr);
 703         }
 704         return hq_put_index;
 705 }
 706 
 707 /**
 708  * lpfc_sli4_rq_release - Updates internal hba index for RQ
 709  * @q: The Header Receive Queue to operate on.
 710  *
 711  * This routine will update the HBA index of a queue to reflect consumption of
 712  * one Receive Queue Entry by the HBA. When the HBA indicates that it has
 713  * consumed an entry the host calls this function to update the queue's
 714  * internal pointers. This routine returns the number of entries that were
 715  * consumed by the HBA.
 716  **/
 717 static uint32_t
 718 lpfc_sli4_rq_release(struct lpfc_queue *hq, struct lpfc_queue *dq)
 719 {
 720         /* sanity check on queue memory */
 721         if (unlikely(!hq) || unlikely(!dq))
 722                 return 0;
 723 
 724         if ((hq->type != LPFC_HRQ) || (dq->type != LPFC_DRQ))
 725                 return 0;
 726         hq->hba_index = ((hq->hba_index + 1) % hq->entry_count);
 727         dq->hba_index = ((dq->hba_index + 1) % dq->entry_count);
 728         return 1;
 729 }
 730 
 731 /**
 732  * lpfc_cmd_iocb - Get next command iocb entry in the ring
 733  * @phba: Pointer to HBA context object.
 734  * @pring: Pointer to driver SLI ring object.
 735  *
 736  * This function returns pointer to next command iocb entry
 737  * in the command ring. The caller must hold hbalock to prevent
 738  * other threads consume the next command iocb.
 739  * SLI-2/SLI-3 provide different sized iocbs.
 740  **/
 741 static inline IOCB_t *
 742 lpfc_cmd_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
 743 {
 744         return (IOCB_t *) (((char *) pring->sli.sli3.cmdringaddr) +
 745                            pring->sli.sli3.cmdidx * phba->iocb_cmd_size);
 746 }
 747 
 748 /**
 749  * lpfc_resp_iocb - Get next response iocb entry in the ring
 750  * @phba: Pointer to HBA context object.
 751  * @pring: Pointer to driver SLI ring object.
 752  *
 753  * This function returns pointer to next response iocb entry
 754  * in the response ring. The caller must hold hbalock to make sure
 755  * that no other thread consume the next response iocb.
 756  * SLI-2/SLI-3 provide different sized iocbs.
 757  **/
 758 static inline IOCB_t *
 759 lpfc_resp_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
 760 {
 761         return (IOCB_t *) (((char *) pring->sli.sli3.rspringaddr) +
 762                            pring->sli.sli3.rspidx * phba->iocb_rsp_size);
 763 }
 764 
 765 /**
 766  * __lpfc_sli_get_iocbq - Allocates an iocb object from iocb pool
 767  * @phba: Pointer to HBA context object.
 768  *
 769  * This function is called with hbalock held. This function
 770  * allocates a new driver iocb object from the iocb pool. If the
 771  * allocation is successful, it returns pointer to the newly
 772  * allocated iocb object else it returns NULL.
 773  **/
 774 struct lpfc_iocbq *
 775 __lpfc_sli_get_iocbq(struct lpfc_hba *phba)
 776 {
 777         struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list;
 778         struct lpfc_iocbq * iocbq = NULL;
 779 
 780         lockdep_assert_held(&phba->hbalock);
 781 
 782         list_remove_head(lpfc_iocb_list, iocbq, struct lpfc_iocbq, list);
 783         if (iocbq)
 784                 phba->iocb_cnt++;
 785         if (phba->iocb_cnt > phba->iocb_max)
 786                 phba->iocb_max = phba->iocb_cnt;
 787         return iocbq;
 788 }
 789 
 790 /**
 791  * __lpfc_clear_active_sglq - Remove the active sglq for this XRI.
 792  * @phba: Pointer to HBA context object.
 793  * @xritag: XRI value.
 794  *
 795  * This function clears the sglq pointer from the array of acive
 796  * sglq's. The xritag that is passed in is used to index into the
 797  * array. Before the xritag can be used it needs to be adjusted
 798  * by subtracting the xribase.
 799  *
 800  * Returns sglq ponter = success, NULL = Failure.
 801  **/
 802 struct lpfc_sglq *
 803 __lpfc_clear_active_sglq(struct lpfc_hba *phba, uint16_t xritag)
 804 {
 805         struct lpfc_sglq *sglq;
 806 
 807         sglq = phba->sli4_hba.lpfc_sglq_active_list[xritag];
 808         phba->sli4_hba.lpfc_sglq_active_list[xritag] = NULL;
 809         return sglq;
 810 }
 811 
 812 /**
 813  * __lpfc_get_active_sglq - Get the active sglq for this XRI.
 814  * @phba: Pointer to HBA context object.
 815  * @xritag: XRI value.
 816  *
 817  * This function returns the sglq pointer from the array of acive
 818  * sglq's. The xritag that is passed in is used to index into the
 819  * array. Before the xritag can be used it needs to be adjusted
 820  * by subtracting the xribase.
 821  *
 822  * Returns sglq ponter = success, NULL = Failure.
 823  **/
 824 struct lpfc_sglq *
 825 __lpfc_get_active_sglq(struct lpfc_hba *phba, uint16_t xritag)
 826 {
 827         struct lpfc_sglq *sglq;
 828 
 829         sglq =  phba->sli4_hba.lpfc_sglq_active_list[xritag];
 830         return sglq;
 831 }
 832 
 833 /**
 834  * lpfc_clr_rrq_active - Clears RRQ active bit in xri_bitmap.
 835  * @phba: Pointer to HBA context object.
 836  * @xritag: xri used in this exchange.
 837  * @rrq: The RRQ to be cleared.
 838  *
 839  **/
 840 void
 841 lpfc_clr_rrq_active(struct lpfc_hba *phba,
 842                     uint16_t xritag,
 843                     struct lpfc_node_rrq *rrq)
 844 {
 845         struct lpfc_nodelist *ndlp = NULL;
 846 
 847         if ((rrq->vport) && NLP_CHK_NODE_ACT(rrq->ndlp))
 848                 ndlp = lpfc_findnode_did(rrq->vport, rrq->nlp_DID);
 849 
 850         /* The target DID could have been swapped (cable swap)
 851          * we should use the ndlp from the findnode if it is
 852          * available.
 853          */
 854         if ((!ndlp) && rrq->ndlp)
 855                 ndlp = rrq->ndlp;
 856 
 857         if (!ndlp)
 858                 goto out;
 859 
 860         if (test_and_clear_bit(xritag, ndlp->active_rrqs_xri_bitmap)) {
 861                 rrq->send_rrq = 0;
 862                 rrq->xritag = 0;
 863                 rrq->rrq_stop_time = 0;
 864         }
 865 out:
 866         mempool_free(rrq, phba->rrq_pool);
 867 }
 868 
 869 /**
 870  * lpfc_handle_rrq_active - Checks if RRQ has waithed RATOV.
 871  * @phba: Pointer to HBA context object.
 872  *
 873  * This function is called with hbalock held. This function
 874  * Checks if stop_time (ratov from setting rrq active) has
 875  * been reached, if it has and the send_rrq flag is set then
 876  * it will call lpfc_send_rrq. If the send_rrq flag is not set
 877  * then it will just call the routine to clear the rrq and
 878  * free the rrq resource.
 879  * The timer is set to the next rrq that is going to expire before
 880  * leaving the routine.
 881  *
 882  **/
 883 void
 884 lpfc_handle_rrq_active(struct lpfc_hba *phba)
 885 {
 886         struct lpfc_node_rrq *rrq;
 887         struct lpfc_node_rrq *nextrrq;
 888         unsigned long next_time;
 889         unsigned long iflags;
 890         LIST_HEAD(send_rrq);
 891 
 892         spin_lock_irqsave(&phba->hbalock, iflags);
 893         phba->hba_flag &= ~HBA_RRQ_ACTIVE;
 894         next_time = jiffies + msecs_to_jiffies(1000 * (phba->fc_ratov + 1));
 895         list_for_each_entry_safe(rrq, nextrrq,
 896                                  &phba->active_rrq_list, list) {
 897                 if (time_after(jiffies, rrq->rrq_stop_time))
 898                         list_move(&rrq->list, &send_rrq);
 899                 else if (time_before(rrq->rrq_stop_time, next_time))
 900                         next_time = rrq->rrq_stop_time;
 901         }
 902         spin_unlock_irqrestore(&phba->hbalock, iflags);
 903         if ((!list_empty(&phba->active_rrq_list)) &&
 904             (!(phba->pport->load_flag & FC_UNLOADING)))
 905                 mod_timer(&phba->rrq_tmr, next_time);
 906         list_for_each_entry_safe(rrq, nextrrq, &send_rrq, list) {
 907                 list_del(&rrq->list);
 908                 if (!rrq->send_rrq) {
 909                         /* this call will free the rrq */
 910                         lpfc_clr_rrq_active(phba, rrq->xritag, rrq);
 911                 } else if (lpfc_send_rrq(phba, rrq)) {
 912                         /* if we send the rrq then the completion handler
 913                         *  will clear the bit in the xribitmap.
 914                         */
 915                         lpfc_clr_rrq_active(phba, rrq->xritag,
 916                                             rrq);
 917                 }
 918         }
 919 }
 920 
 921 /**
 922  * lpfc_get_active_rrq - Get the active RRQ for this exchange.
 923  * @vport: Pointer to vport context object.
 924  * @xri: The xri used in the exchange.
 925  * @did: The targets DID for this exchange.
 926  *
 927  * returns NULL = rrq not found in the phba->active_rrq_list.
 928  *         rrq = rrq for this xri and target.
 929  **/
 930 struct lpfc_node_rrq *
 931 lpfc_get_active_rrq(struct lpfc_vport *vport, uint16_t xri, uint32_t did)
 932 {
 933         struct lpfc_hba *phba = vport->phba;
 934         struct lpfc_node_rrq *rrq;
 935         struct lpfc_node_rrq *nextrrq;
 936         unsigned long iflags;
 937 
 938         if (phba->sli_rev != LPFC_SLI_REV4)
 939                 return NULL;
 940         spin_lock_irqsave(&phba->hbalock, iflags);
 941         list_for_each_entry_safe(rrq, nextrrq, &phba->active_rrq_list, list) {
 942                 if (rrq->vport == vport && rrq->xritag == xri &&
 943                                 rrq->nlp_DID == did){
 944                         list_del(&rrq->list);
 945                         spin_unlock_irqrestore(&phba->hbalock, iflags);
 946                         return rrq;
 947                 }
 948         }
 949         spin_unlock_irqrestore(&phba->hbalock, iflags);
 950         return NULL;
 951 }
 952 
 953 /**
 954  * lpfc_cleanup_vports_rrqs - Remove and clear the active RRQ for this vport.
 955  * @vport: Pointer to vport context object.
 956  * @ndlp: Pointer to the lpfc_node_list structure.
 957  * If ndlp is NULL Remove all active RRQs for this vport from the
 958  * phba->active_rrq_list and clear the rrq.
 959  * If ndlp is not NULL then only remove rrqs for this vport & this ndlp.
 960  **/
 961 void
 962 lpfc_cleanup_vports_rrqs(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 963 
 964 {
 965         struct lpfc_hba *phba = vport->phba;
 966         struct lpfc_node_rrq *rrq;
 967         struct lpfc_node_rrq *nextrrq;
 968         unsigned long iflags;
 969         LIST_HEAD(rrq_list);
 970 
 971         if (phba->sli_rev != LPFC_SLI_REV4)
 972                 return;
 973         if (!ndlp) {
 974                 lpfc_sli4_vport_delete_els_xri_aborted(vport);
 975                 lpfc_sli4_vport_delete_fcp_xri_aborted(vport);
 976         }
 977         spin_lock_irqsave(&phba->hbalock, iflags);
 978         list_for_each_entry_safe(rrq, nextrrq, &phba->active_rrq_list, list)
 979                 if ((rrq->vport == vport) && (!ndlp  || rrq->ndlp == ndlp))
 980                         list_move(&rrq->list, &rrq_list);
 981         spin_unlock_irqrestore(&phba->hbalock, iflags);
 982 
 983         list_for_each_entry_safe(rrq, nextrrq, &rrq_list, list) {
 984                 list_del(&rrq->list);
 985                 lpfc_clr_rrq_active(phba, rrq->xritag, rrq);
 986         }
 987 }
 988 
 989 /**
 990  * lpfc_test_rrq_active - Test RRQ bit in xri_bitmap.
 991  * @phba: Pointer to HBA context object.
 992  * @ndlp: Targets nodelist pointer for this exchange.
 993  * @xritag the xri in the bitmap to test.
 994  *
 995  * This function returns:
 996  * 0 = rrq not active for this xri
 997  * 1 = rrq is valid for this xri.
 998  **/
 999 int
1000 lpfc_test_rrq_active(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
1001                         uint16_t  xritag)
1002 {
1003         if (!ndlp)
1004                 return 0;
1005         if (!ndlp->active_rrqs_xri_bitmap)
1006                 return 0;
1007         if (test_bit(xritag, ndlp->active_rrqs_xri_bitmap))
1008                 return 1;
1009         else
1010                 return 0;
1011 }
1012 
1013 /**
1014  * lpfc_set_rrq_active - set RRQ active bit in xri_bitmap.
1015  * @phba: Pointer to HBA context object.
1016  * @ndlp: nodelist pointer for this target.
1017  * @xritag: xri used in this exchange.
1018  * @rxid: Remote Exchange ID.
1019  * @send_rrq: Flag used to determine if we should send rrq els cmd.
1020  *
1021  * This function takes the hbalock.
1022  * The active bit is always set in the active rrq xri_bitmap even
1023  * if there is no slot avaiable for the other rrq information.
1024  *
1025  * returns 0 rrq actived for this xri
1026  *         < 0 No memory or invalid ndlp.
1027  **/
1028 int
1029 lpfc_set_rrq_active(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
1030                     uint16_t xritag, uint16_t rxid, uint16_t send_rrq)
1031 {
1032         unsigned long iflags;
1033         struct lpfc_node_rrq *rrq;
1034         int empty;
1035 
1036         if (!ndlp)
1037                 return -EINVAL;
1038 
1039         if (!phba->cfg_enable_rrq)
1040                 return -EINVAL;
1041 
1042         spin_lock_irqsave(&phba->hbalock, iflags);
1043         if (phba->pport->load_flag & FC_UNLOADING) {
1044                 phba->hba_flag &= ~HBA_RRQ_ACTIVE;
1045                 goto out;
1046         }
1047 
1048         /*
1049          * set the active bit even if there is no mem available.
1050          */
1051         if (NLP_CHK_FREE_REQ(ndlp))
1052                 goto out;
1053 
1054         if (ndlp->vport && (ndlp->vport->load_flag & FC_UNLOADING))
1055                 goto out;
1056 
1057         if (!ndlp->active_rrqs_xri_bitmap)
1058                 goto out;
1059 
1060         if (test_and_set_bit(xritag, ndlp->active_rrqs_xri_bitmap))
1061                 goto out;
1062 
1063         spin_unlock_irqrestore(&phba->hbalock, iflags);
1064         rrq = mempool_alloc(phba->rrq_pool, GFP_KERNEL);
1065         if (!rrq) {
1066                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
1067                                 "3155 Unable to allocate RRQ xri:0x%x rxid:0x%x"
1068                                 " DID:0x%x Send:%d\n",
1069                                 xritag, rxid, ndlp->nlp_DID, send_rrq);
1070                 return -EINVAL;
1071         }
1072         if (phba->cfg_enable_rrq == 1)
1073                 rrq->send_rrq = send_rrq;
1074         else
1075                 rrq->send_rrq = 0;
1076         rrq->xritag = xritag;
1077         rrq->rrq_stop_time = jiffies +
1078                                 msecs_to_jiffies(1000 * (phba->fc_ratov + 1));
1079         rrq->ndlp = ndlp;
1080         rrq->nlp_DID = ndlp->nlp_DID;
1081         rrq->vport = ndlp->vport;
1082         rrq->rxid = rxid;
1083         spin_lock_irqsave(&phba->hbalock, iflags);
1084         empty = list_empty(&phba->active_rrq_list);
1085         list_add_tail(&rrq->list, &phba->active_rrq_list);
1086         phba->hba_flag |= HBA_RRQ_ACTIVE;
1087         if (empty)
1088                 lpfc_worker_wake_up(phba);
1089         spin_unlock_irqrestore(&phba->hbalock, iflags);
1090         return 0;
1091 out:
1092         spin_unlock_irqrestore(&phba->hbalock, iflags);
1093         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
1094                         "2921 Can't set rrq active xri:0x%x rxid:0x%x"
1095                         " DID:0x%x Send:%d\n",
1096                         xritag, rxid, ndlp->nlp_DID, send_rrq);
1097         return -EINVAL;
1098 }
1099 
1100 /**
1101  * __lpfc_sli_get_els_sglq - Allocates an iocb object from sgl pool
1102  * @phba: Pointer to HBA context object.
1103  * @piocb: Pointer to the iocbq.
1104  *
1105  * The driver calls this function with either the nvme ls ring lock
1106  * or the fc els ring lock held depending on the iocb usage.  This function
1107  * gets a new driver sglq object from the sglq list. If the list is not empty
1108  * then it is successful, it returns pointer to the newly allocated sglq
1109  * object else it returns NULL.
1110  **/
1111 static struct lpfc_sglq *
1112 __lpfc_sli_get_els_sglq(struct lpfc_hba *phba, struct lpfc_iocbq *piocbq)
1113 {
1114         struct list_head *lpfc_els_sgl_list = &phba->sli4_hba.lpfc_els_sgl_list;
1115         struct lpfc_sglq *sglq = NULL;
1116         struct lpfc_sglq *start_sglq = NULL;
1117         struct lpfc_io_buf *lpfc_cmd;
1118         struct lpfc_nodelist *ndlp;
1119         struct lpfc_sli_ring *pring = NULL;
1120         int found = 0;
1121 
1122         if (piocbq->iocb_flag & LPFC_IO_NVME_LS)
1123                 pring =  phba->sli4_hba.nvmels_wq->pring;
1124         else
1125                 pring = lpfc_phba_elsring(phba);
1126 
1127         lockdep_assert_held(&pring->ring_lock);
1128 
1129         if (piocbq->iocb_flag &  LPFC_IO_FCP) {
1130                 lpfc_cmd = (struct lpfc_io_buf *) piocbq->context1;
1131                 ndlp = lpfc_cmd->rdata->pnode;
1132         } else  if ((piocbq->iocb.ulpCommand == CMD_GEN_REQUEST64_CR) &&
1133                         !(piocbq->iocb_flag & LPFC_IO_LIBDFC)) {
1134                 ndlp = piocbq->context_un.ndlp;
1135         } else  if (piocbq->iocb_flag & LPFC_IO_LIBDFC) {
1136                 if (piocbq->iocb_flag & LPFC_IO_LOOPBACK)
1137                         ndlp = NULL;
1138                 else
1139                         ndlp = piocbq->context_un.ndlp;
1140         } else {
1141                 ndlp = piocbq->context1;
1142         }
1143 
1144         spin_lock(&phba->sli4_hba.sgl_list_lock);
1145         list_remove_head(lpfc_els_sgl_list, sglq, struct lpfc_sglq, list);
1146         start_sglq = sglq;
1147         while (!found) {
1148                 if (!sglq)
1149                         break;
1150                 if (ndlp && ndlp->active_rrqs_xri_bitmap &&
1151                     test_bit(sglq->sli4_lxritag,
1152                     ndlp->active_rrqs_xri_bitmap)) {
1153                         /* This xri has an rrq outstanding for this DID.
1154                          * put it back in the list and get another xri.
1155                          */
1156                         list_add_tail(&sglq->list, lpfc_els_sgl_list);
1157                         sglq = NULL;
1158                         list_remove_head(lpfc_els_sgl_list, sglq,
1159                                                 struct lpfc_sglq, list);
1160                         if (sglq == start_sglq) {
1161                                 list_add_tail(&sglq->list, lpfc_els_sgl_list);
1162                                 sglq = NULL;
1163                                 break;
1164                         } else
1165                                 continue;
1166                 }
1167                 sglq->ndlp = ndlp;
1168                 found = 1;
1169                 phba->sli4_hba.lpfc_sglq_active_list[sglq->sli4_lxritag] = sglq;
1170                 sglq->state = SGL_ALLOCATED;
1171         }
1172         spin_unlock(&phba->sli4_hba.sgl_list_lock);
1173         return sglq;
1174 }
1175 
1176 /**
1177  * __lpfc_sli_get_nvmet_sglq - Allocates an iocb object from sgl pool
1178  * @phba: Pointer to HBA context object.
1179  * @piocb: Pointer to the iocbq.
1180  *
1181  * This function is called with the sgl_list lock held. This function
1182  * gets a new driver sglq object from the sglq list. If the
1183  * list is not empty then it is successful, it returns pointer to the newly
1184  * allocated sglq object else it returns NULL.
1185  **/
1186 struct lpfc_sglq *
1187 __lpfc_sli_get_nvmet_sglq(struct lpfc_hba *phba, struct lpfc_iocbq *piocbq)
1188 {
1189         struct list_head *lpfc_nvmet_sgl_list;
1190         struct lpfc_sglq *sglq = NULL;
1191 
1192         lpfc_nvmet_sgl_list = &phba->sli4_hba.lpfc_nvmet_sgl_list;
1193 
1194         lockdep_assert_held(&phba->sli4_hba.sgl_list_lock);
1195 
1196         list_remove_head(lpfc_nvmet_sgl_list, sglq, struct lpfc_sglq, list);
1197         if (!sglq)
1198                 return NULL;
1199         phba->sli4_hba.lpfc_sglq_active_list[sglq->sli4_lxritag] = sglq;
1200         sglq->state = SGL_ALLOCATED;
1201         return sglq;
1202 }
1203 
1204 /**
1205  * lpfc_sli_get_iocbq - Allocates an iocb object from iocb pool
1206  * @phba: Pointer to HBA context object.
1207  *
1208  * This function is called with no lock held. This function
1209  * allocates a new driver iocb object from the iocb pool. If the
1210  * allocation is successful, it returns pointer to the newly
1211  * allocated iocb object else it returns NULL.
1212  **/
1213 struct lpfc_iocbq *
1214 lpfc_sli_get_iocbq(struct lpfc_hba *phba)
1215 {
1216         struct lpfc_iocbq * iocbq = NULL;
1217         unsigned long iflags;
1218 
1219         spin_lock_irqsave(&phba->hbalock, iflags);
1220         iocbq = __lpfc_sli_get_iocbq(phba);
1221         spin_unlock_irqrestore(&phba->hbalock, iflags);
1222         return iocbq;
1223 }
1224 
1225 /**
1226  * __lpfc_sli_release_iocbq_s4 - Release iocb to the iocb pool
1227  * @phba: Pointer to HBA context object.
1228  * @iocbq: Pointer to driver iocb object.
1229  *
1230  * This function is called with hbalock held to release driver
1231  * iocb object to the iocb pool. The iotag in the iocb object
1232  * does not change for each use of the iocb object. This function
1233  * clears all other fields of the iocb object when it is freed.
1234  * The sqlq structure that holds the xritag and phys and virtual
1235  * mappings for the scatter gather list is retrieved from the
1236  * active array of sglq. The get of the sglq pointer also clears
1237  * the entry in the array. If the status of the IO indiactes that
1238  * this IO was aborted then the sglq entry it put on the
1239  * lpfc_abts_els_sgl_list until the CQ_ABORTED_XRI is received. If the
1240  * IO has good status or fails for any other reason then the sglq
1241  * entry is added to the free list (lpfc_els_sgl_list).
1242  **/
1243 static void
1244 __lpfc_sli_release_iocbq_s4(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
1245 {
1246         struct lpfc_sglq *sglq;
1247         size_t start_clean = offsetof(struct lpfc_iocbq, iocb);
1248         unsigned long iflag = 0;
1249         struct lpfc_sli_ring *pring;
1250 
1251         lockdep_assert_held(&phba->hbalock);
1252 
1253         if (iocbq->sli4_xritag == NO_XRI)
1254                 sglq = NULL;
1255         else
1256                 sglq = __lpfc_clear_active_sglq(phba, iocbq->sli4_lxritag);
1257 
1258 
1259         if (sglq)  {
1260                 if (iocbq->iocb_flag & LPFC_IO_NVMET) {
1261                         spin_lock_irqsave(&phba->sli4_hba.sgl_list_lock,
1262                                           iflag);
1263                         sglq->state = SGL_FREED;
1264                         sglq->ndlp = NULL;
1265                         list_add_tail(&sglq->list,
1266                                       &phba->sli4_hba.lpfc_nvmet_sgl_list);
1267                         spin_unlock_irqrestore(
1268                                 &phba->sli4_hba.sgl_list_lock, iflag);
1269                         goto out;
1270                 }
1271 
1272                 pring = phba->sli4_hba.els_wq->pring;
1273                 if ((iocbq->iocb_flag & LPFC_EXCHANGE_BUSY) &&
1274                         (sglq->state != SGL_XRI_ABORTED)) {
1275                         spin_lock_irqsave(&phba->sli4_hba.sgl_list_lock,
1276                                           iflag);
1277                         list_add(&sglq->list,
1278                                  &phba->sli4_hba.lpfc_abts_els_sgl_list);
1279                         spin_unlock_irqrestore(
1280                                 &phba->sli4_hba.sgl_list_lock, iflag);
1281                 } else {
1282                         spin_lock_irqsave(&phba->sli4_hba.sgl_list_lock,
1283                                           iflag);
1284                         sglq->state = SGL_FREED;
1285                         sglq->ndlp = NULL;
1286                         list_add_tail(&sglq->list,
1287                                       &phba->sli4_hba.lpfc_els_sgl_list);
1288                         spin_unlock_irqrestore(
1289                                 &phba->sli4_hba.sgl_list_lock, iflag);
1290 
1291                         /* Check if TXQ queue needs to be serviced */
1292                         if (!list_empty(&pring->txq))
1293                                 lpfc_worker_wake_up(phba);
1294                 }
1295         }
1296 
1297 out:
1298         /*
1299          * Clean all volatile data fields, preserve iotag and node struct.
1300          */
1301         memset((char *)iocbq + start_clean, 0, sizeof(*iocbq) - start_clean);
1302         iocbq->sli4_lxritag = NO_XRI;
1303         iocbq->sli4_xritag = NO_XRI;
1304         iocbq->iocb_flag &= ~(LPFC_IO_NVME | LPFC_IO_NVMET |
1305                               LPFC_IO_NVME_LS);
1306         list_add_tail(&iocbq->list, &phba->lpfc_iocb_list);
1307 }
1308 
1309 
1310 /**
1311  * __lpfc_sli_release_iocbq_s3 - Release iocb to the iocb pool
1312  * @phba: Pointer to HBA context object.
1313  * @iocbq: Pointer to driver iocb object.
1314  *
1315  * This function is called with hbalock held to release driver
1316  * iocb object to the iocb pool. The iotag in the iocb object
1317  * does not change for each use of the iocb object. This function
1318  * clears all other fields of the iocb object when it is freed.
1319  **/
1320 static void
1321 __lpfc_sli_release_iocbq_s3(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
1322 {
1323         size_t start_clean = offsetof(struct lpfc_iocbq, iocb);
1324 
1325         lockdep_assert_held(&phba->hbalock);
1326 
1327         /*
1328          * Clean all volatile data fields, preserve iotag and node struct.
1329          */
1330         memset((char*)iocbq + start_clean, 0, sizeof(*iocbq) - start_clean);
1331         iocbq->sli4_xritag = NO_XRI;
1332         list_add_tail(&iocbq->list, &phba->lpfc_iocb_list);
1333 }
1334 
1335 /**
1336  * __lpfc_sli_release_iocbq - Release iocb to the iocb pool
1337  * @phba: Pointer to HBA context object.
1338  * @iocbq: Pointer to driver iocb object.
1339  *
1340  * This function is called with hbalock held to release driver
1341  * iocb object to the iocb pool. The iotag in the iocb object
1342  * does not change for each use of the iocb object. This function
1343  * clears all other fields of the iocb object when it is freed.
1344  **/
1345 static void
1346 __lpfc_sli_release_iocbq(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
1347 {
1348         lockdep_assert_held(&phba->hbalock);
1349 
1350         phba->__lpfc_sli_release_iocbq(phba, iocbq);
1351         phba->iocb_cnt--;
1352 }
1353 
1354 /**
1355  * lpfc_sli_release_iocbq - Release iocb to the iocb pool
1356  * @phba: Pointer to HBA context object.
1357  * @iocbq: Pointer to driver iocb object.
1358  *
1359  * This function is called with no lock held to release the iocb to
1360  * iocb pool.
1361  **/
1362 void
1363 lpfc_sli_release_iocbq(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
1364 {
1365         unsigned long iflags;
1366 
1367         /*
1368          * Clean all volatile data fields, preserve iotag and node struct.
1369          */
1370         spin_lock_irqsave(&phba->hbalock, iflags);
1371         __lpfc_sli_release_iocbq(phba, iocbq);
1372         spin_unlock_irqrestore(&phba->hbalock, iflags);
1373 }
1374 
1375 /**
1376  * lpfc_sli_cancel_iocbs - Cancel all iocbs from a list.
1377  * @phba: Pointer to HBA context object.
1378  * @iocblist: List of IOCBs.
1379  * @ulpstatus: ULP status in IOCB command field.
1380  * @ulpWord4: ULP word-4 in IOCB command field.
1381  *
1382  * This function is called with a list of IOCBs to cancel. It cancels the IOCB
1383  * on the list by invoking the complete callback function associated with the
1384  * IOCB with the provided @ulpstatus and @ulpword4 set to the IOCB commond
1385  * fields.
1386  **/
1387 void
1388 lpfc_sli_cancel_iocbs(struct lpfc_hba *phba, struct list_head *iocblist,
1389                       uint32_t ulpstatus, uint32_t ulpWord4)
1390 {
1391         struct lpfc_iocbq *piocb;
1392 
1393         while (!list_empty(iocblist)) {
1394                 list_remove_head(iocblist, piocb, struct lpfc_iocbq, list);
1395                 if (!piocb->iocb_cmpl) {
1396                         if (piocb->iocb_flag & LPFC_IO_NVME)
1397                                 lpfc_nvme_cancel_iocb(phba, piocb);
1398                         else
1399                                 lpfc_sli_release_iocbq(phba, piocb);
1400                 } else {
1401                         piocb->iocb.ulpStatus = ulpstatus;
1402                         piocb->iocb.un.ulpWord[4] = ulpWord4;
1403                         (piocb->iocb_cmpl) (phba, piocb, piocb);
1404                 }
1405         }
1406         return;
1407 }
1408 
1409 /**
1410  * lpfc_sli_iocb_cmd_type - Get the iocb type
1411  * @iocb_cmnd: iocb command code.
1412  *
1413  * This function is called by ring event handler function to get the iocb type.
1414  * This function translates the iocb command to an iocb command type used to
1415  * decide the final disposition of each completed IOCB.
1416  * The function returns
1417  * LPFC_UNKNOWN_IOCB if it is an unsupported iocb
1418  * LPFC_SOL_IOCB     if it is a solicited iocb completion
1419  * LPFC_ABORT_IOCB   if it is an abort iocb
1420  * LPFC_UNSOL_IOCB   if it is an unsolicited iocb
1421  *
1422  * The caller is not required to hold any lock.
1423  **/
1424 static lpfc_iocb_type
1425 lpfc_sli_iocb_cmd_type(uint8_t iocb_cmnd)
1426 {
1427         lpfc_iocb_type type = LPFC_UNKNOWN_IOCB;
1428 
1429         if (iocb_cmnd > CMD_MAX_IOCB_CMD)
1430                 return 0;
1431 
1432         switch (iocb_cmnd) {
1433         case CMD_XMIT_SEQUENCE_CR:
1434         case CMD_XMIT_SEQUENCE_CX:
1435         case CMD_XMIT_BCAST_CN:
1436         case CMD_XMIT_BCAST_CX:
1437         case CMD_ELS_REQUEST_CR:
1438         case CMD_ELS_REQUEST_CX:
1439         case CMD_CREATE_XRI_CR:
1440         case CMD_CREATE_XRI_CX:
1441         case CMD_GET_RPI_CN:
1442         case CMD_XMIT_ELS_RSP_CX:
1443         case CMD_GET_RPI_CR:
1444         case CMD_FCP_IWRITE_CR:
1445         case CMD_FCP_IWRITE_CX:
1446         case CMD_FCP_IREAD_CR:
1447         case CMD_FCP_IREAD_CX:
1448         case CMD_FCP_ICMND_CR:
1449         case CMD_FCP_ICMND_CX:
1450         case CMD_FCP_TSEND_CX:
1451         case CMD_FCP_TRSP_CX:
1452         case CMD_FCP_TRECEIVE_CX:
1453         case CMD_FCP_AUTO_TRSP_CX:
1454         case CMD_ADAPTER_MSG:
1455         case CMD_ADAPTER_DUMP:
1456         case CMD_XMIT_SEQUENCE64_CR:
1457         case CMD_XMIT_SEQUENCE64_CX:
1458         case CMD_XMIT_BCAST64_CN:
1459         case CMD_XMIT_BCAST64_CX:
1460         case CMD_ELS_REQUEST64_CR:
1461         case CMD_ELS_REQUEST64_CX:
1462         case CMD_FCP_IWRITE64_CR:
1463         case CMD_FCP_IWRITE64_CX:
1464         case CMD_FCP_IREAD64_CR:
1465         case CMD_FCP_IREAD64_CX:
1466         case CMD_FCP_ICMND64_CR:
1467         case CMD_FCP_ICMND64_CX:
1468         case CMD_FCP_TSEND64_CX:
1469         case CMD_FCP_TRSP64_CX:
1470         case CMD_FCP_TRECEIVE64_CX:
1471         case CMD_GEN_REQUEST64_CR:
1472         case CMD_GEN_REQUEST64_CX:
1473         case CMD_XMIT_ELS_RSP64_CX:
1474         case DSSCMD_IWRITE64_CR:
1475         case DSSCMD_IWRITE64_CX:
1476         case DSSCMD_IREAD64_CR:
1477         case DSSCMD_IREAD64_CX:
1478                 type = LPFC_SOL_IOCB;
1479                 break;
1480         case CMD_ABORT_XRI_CN:
1481         case CMD_ABORT_XRI_CX:
1482         case CMD_CLOSE_XRI_CN:
1483         case CMD_CLOSE_XRI_CX:
1484         case CMD_XRI_ABORTED_CX:
1485         case CMD_ABORT_MXRI64_CN:
1486         case CMD_XMIT_BLS_RSP64_CX:
1487                 type = LPFC_ABORT_IOCB;
1488                 break;
1489         case CMD_RCV_SEQUENCE_CX:
1490         case CMD_RCV_ELS_REQ_CX:
1491         case CMD_RCV_SEQUENCE64_CX:
1492         case CMD_RCV_ELS_REQ64_CX:
1493         case CMD_ASYNC_STATUS:
1494         case CMD_IOCB_RCV_SEQ64_CX:
1495         case CMD_IOCB_RCV_ELS64_CX:
1496         case CMD_IOCB_RCV_CONT64_CX:
1497         case CMD_IOCB_RET_XRI64_CX:
1498                 type = LPFC_UNSOL_IOCB;
1499                 break;
1500         case CMD_IOCB_XMIT_MSEQ64_CR:
1501         case CMD_IOCB_XMIT_MSEQ64_CX:
1502         case CMD_IOCB_RCV_SEQ_LIST64_CX:
1503         case CMD_IOCB_RCV_ELS_LIST64_CX:
1504         case CMD_IOCB_CLOSE_EXTENDED_CN:
1505         case CMD_IOCB_ABORT_EXTENDED_CN:
1506         case CMD_IOCB_RET_HBQE64_CN:
1507         case CMD_IOCB_FCP_IBIDIR64_CR:
1508         case CMD_IOCB_FCP_IBIDIR64_CX:
1509         case CMD_IOCB_FCP_ITASKMGT64_CX:
1510         case CMD_IOCB_LOGENTRY_CN:
1511         case CMD_IOCB_LOGENTRY_ASYNC_CN:
1512                 printk("%s - Unhandled SLI-3 Command x%x\n",
1513                                 __func__, iocb_cmnd);
1514                 type = LPFC_UNKNOWN_IOCB;
1515                 break;
1516         default:
1517                 type = LPFC_UNKNOWN_IOCB;
1518                 break;
1519         }
1520 
1521         return type;
1522 }
1523 
1524 /**
1525  * lpfc_sli_ring_map - Issue config_ring mbox for all rings
1526  * @phba: Pointer to HBA context object.
1527  *
1528  * This function is called from SLI initialization code
1529  * to configure every ring of the HBA's SLI interface. The
1530  * caller is not required to hold any lock. This function issues
1531  * a config_ring mailbox command for each ring.
1532  * This function returns zero if successful else returns a negative
1533  * error code.
1534  **/
1535 static int
1536 lpfc_sli_ring_map(struct lpfc_hba *phba)
1537 {
1538         struct lpfc_sli *psli = &phba->sli;
1539         LPFC_MBOXQ_t *pmb;
1540         MAILBOX_t *pmbox;
1541         int i, rc, ret = 0;
1542 
1543         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1544         if (!pmb)
1545                 return -ENOMEM;
1546         pmbox = &pmb->u.mb;
1547         phba->link_state = LPFC_INIT_MBX_CMDS;
1548         for (i = 0; i < psli->num_rings; i++) {
1549                 lpfc_config_ring(phba, i, pmb);
1550                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
1551                 if (rc != MBX_SUCCESS) {
1552                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1553                                         "0446 Adapter failed to init (%d), "
1554                                         "mbxCmd x%x CFG_RING, mbxStatus x%x, "
1555                                         "ring %d\n",
1556                                         rc, pmbox->mbxCommand,
1557                                         pmbox->mbxStatus, i);
1558                         phba->link_state = LPFC_HBA_ERROR;
1559                         ret = -ENXIO;
1560                         break;
1561                 }
1562         }
1563         mempool_free(pmb, phba->mbox_mem_pool);
1564         return ret;
1565 }
1566 
1567 /**
1568  * lpfc_sli_ringtxcmpl_put - Adds new iocb to the txcmplq
1569  * @phba: Pointer to HBA context object.
1570  * @pring: Pointer to driver SLI ring object.
1571  * @piocb: Pointer to the driver iocb object.
1572  *
1573  * The driver calls this function with the hbalock held for SLI3 ports or
1574  * the ring lock held for SLI4 ports. The function adds the
1575  * new iocb to txcmplq of the given ring. This function always returns
1576  * 0. If this function is called for ELS ring, this function checks if
1577  * there is a vport associated with the ELS command. This function also
1578  * starts els_tmofunc timer if this is an ELS command.
1579  **/
1580 static int
1581 lpfc_sli_ringtxcmpl_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
1582                         struct lpfc_iocbq *piocb)
1583 {
1584         if (phba->sli_rev == LPFC_SLI_REV4)
1585                 lockdep_assert_held(&pring->ring_lock);
1586         else
1587                 lockdep_assert_held(&phba->hbalock);
1588 
1589         BUG_ON(!piocb);
1590 
1591         list_add_tail(&piocb->list, &pring->txcmplq);
1592         piocb->iocb_flag |= LPFC_IO_ON_TXCMPLQ;
1593         pring->txcmplq_cnt++;
1594 
1595         if ((unlikely(pring->ringno == LPFC_ELS_RING)) &&
1596            (piocb->iocb.ulpCommand != CMD_ABORT_XRI_CN) &&
1597            (piocb->iocb.ulpCommand != CMD_CLOSE_XRI_CN)) {
1598                 BUG_ON(!piocb->vport);
1599                 if (!(piocb->vport->load_flag & FC_UNLOADING))
1600                         mod_timer(&piocb->vport->els_tmofunc,
1601                                   jiffies +
1602                                   msecs_to_jiffies(1000 * (phba->fc_ratov << 1)));
1603         }
1604 
1605         return 0;
1606 }
1607 
1608 /**
1609  * lpfc_sli_ringtx_get - Get first element of the txq
1610  * @phba: Pointer to HBA context object.
1611  * @pring: Pointer to driver SLI ring object.
1612  *
1613  * This function is called with hbalock held to get next
1614  * iocb in txq of the given ring. If there is any iocb in
1615  * the txq, the function returns first iocb in the list after
1616  * removing the iocb from the list, else it returns NULL.
1617  **/
1618 struct lpfc_iocbq *
1619 lpfc_sli_ringtx_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
1620 {
1621         struct lpfc_iocbq *cmd_iocb;
1622 
1623         lockdep_assert_held(&phba->hbalock);
1624 
1625         list_remove_head((&pring->txq), cmd_iocb, struct lpfc_iocbq, list);
1626         return cmd_iocb;
1627 }
1628 
1629 /**
1630  * lpfc_sli_next_iocb_slot - Get next iocb slot in the ring
1631  * @phba: Pointer to HBA context object.
1632  * @pring: Pointer to driver SLI ring object.
1633  *
1634  * This function is called with hbalock held and the caller must post the
1635  * iocb without releasing the lock. If the caller releases the lock,
1636  * iocb slot returned by the function is not guaranteed to be available.
1637  * The function returns pointer to the next available iocb slot if there
1638  * is available slot in the ring, else it returns NULL.
1639  * If the get index of the ring is ahead of the put index, the function
1640  * will post an error attention event to the worker thread to take the
1641  * HBA to offline state.
1642  **/
1643 static IOCB_t *
1644 lpfc_sli_next_iocb_slot (struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
1645 {
1646         struct lpfc_pgp *pgp = &phba->port_gp[pring->ringno];
1647         uint32_t  max_cmd_idx = pring->sli.sli3.numCiocb;
1648 
1649         lockdep_assert_held(&phba->hbalock);
1650 
1651         if ((pring->sli.sli3.next_cmdidx == pring->sli.sli3.cmdidx) &&
1652            (++pring->sli.sli3.next_cmdidx >= max_cmd_idx))
1653                 pring->sli.sli3.next_cmdidx = 0;
1654 
1655         if (unlikely(pring->sli.sli3.local_getidx ==
1656                 pring->sli.sli3.next_cmdidx)) {
1657 
1658                 pring->sli.sli3.local_getidx = le32_to_cpu(pgp->cmdGetInx);
1659 
1660                 if (unlikely(pring->sli.sli3.local_getidx >= max_cmd_idx)) {
1661                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1662                                         "0315 Ring %d issue: portCmdGet %d "
1663                                         "is bigger than cmd ring %d\n",
1664                                         pring->ringno,
1665                                         pring->sli.sli3.local_getidx,
1666                                         max_cmd_idx);
1667 
1668                         phba->link_state = LPFC_HBA_ERROR;
1669                         /*
1670                          * All error attention handlers are posted to
1671                          * worker thread
1672                          */
1673                         phba->work_ha |= HA_ERATT;
1674                         phba->work_hs = HS_FFER3;
1675 
1676                         lpfc_worker_wake_up(phba);
1677 
1678                         return NULL;
1679                 }
1680 
1681                 if (pring->sli.sli3.local_getidx == pring->sli.sli3.next_cmdidx)
1682                         return NULL;
1683         }
1684 
1685         return lpfc_cmd_iocb(phba, pring);
1686 }
1687 
1688 /**
1689  * lpfc_sli_next_iotag - Get an iotag for the iocb
1690  * @phba: Pointer to HBA context object.
1691  * @iocbq: Pointer to driver iocb object.
1692  *
1693  * This function gets an iotag for the iocb. If there is no unused iotag and
1694  * the iocbq_lookup_len < 0xffff, this function allocates a bigger iotag_lookup
1695  * array and assigns a new iotag.
1696  * The function returns the allocated iotag if successful, else returns zero.
1697  * Zero is not a valid iotag.
1698  * The caller is not required to hold any lock.
1699  **/
1700 uint16_t
1701 lpfc_sli_next_iotag(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
1702 {
1703         struct lpfc_iocbq **new_arr;
1704         struct lpfc_iocbq **old_arr;
1705         size_t new_len;
1706         struct lpfc_sli *psli = &phba->sli;
1707         uint16_t iotag;
1708 
1709         spin_lock_irq(&phba->hbalock);
1710         iotag = psli->last_iotag;
1711         if(++iotag < psli->iocbq_lookup_len) {
1712                 psli->last_iotag = iotag;
1713                 psli->iocbq_lookup[iotag] = iocbq;
1714                 spin_unlock_irq(&phba->hbalock);
1715                 iocbq->iotag = iotag;
1716                 return iotag;
1717         } else if (psli->iocbq_lookup_len < (0xffff
1718                                            - LPFC_IOCBQ_LOOKUP_INCREMENT)) {
1719                 new_len = psli->iocbq_lookup_len + LPFC_IOCBQ_LOOKUP_INCREMENT;
1720                 spin_unlock_irq(&phba->hbalock);
1721                 new_arr = kcalloc(new_len, sizeof(struct lpfc_iocbq *),
1722                                   GFP_KERNEL);
1723                 if (new_arr) {
1724                         spin_lock_irq(&phba->hbalock);
1725                         old_arr = psli->iocbq_lookup;
1726                         if (new_len <= psli->iocbq_lookup_len) {
1727                                 /* highly unprobable case */
1728                                 kfree(new_arr);
1729                                 iotag = psli->last_iotag;
1730                                 if(++iotag < psli->iocbq_lookup_len) {
1731                                         psli->last_iotag = iotag;
1732                                         psli->iocbq_lookup[iotag] = iocbq;
1733                                         spin_unlock_irq(&phba->hbalock);
1734                                         iocbq->iotag = iotag;
1735                                         return iotag;
1736                                 }
1737                                 spin_unlock_irq(&phba->hbalock);
1738                                 return 0;
1739                         }
1740                         if (psli->iocbq_lookup)
1741                                 memcpy(new_arr, old_arr,
1742                                        ((psli->last_iotag  + 1) *
1743                                         sizeof (struct lpfc_iocbq *)));
1744                         psli->iocbq_lookup = new_arr;
1745                         psli->iocbq_lookup_len = new_len;
1746                         psli->last_iotag = iotag;
1747                         psli->iocbq_lookup[iotag] = iocbq;
1748                         spin_unlock_irq(&phba->hbalock);
1749                         iocbq->iotag = iotag;
1750                         kfree(old_arr);
1751                         return iotag;
1752                 }
1753         } else
1754                 spin_unlock_irq(&phba->hbalock);
1755 
1756         lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
1757                         "0318 Failed to allocate IOTAG.last IOTAG is %d\n",
1758                         psli->last_iotag);
1759 
1760         return 0;
1761 }
1762 
1763 /**
1764  * lpfc_sli_submit_iocb - Submit an iocb to the firmware
1765  * @phba: Pointer to HBA context object.
1766  * @pring: Pointer to driver SLI ring object.
1767  * @iocb: Pointer to iocb slot in the ring.
1768  * @nextiocb: Pointer to driver iocb object which need to be
1769  *            posted to firmware.
1770  *
1771  * This function is called with hbalock held to post a new iocb to
1772  * the firmware. This function copies the new iocb to ring iocb slot and
1773  * updates the ring pointers. It adds the new iocb to txcmplq if there is
1774  * a completion call back for this iocb else the function will free the
1775  * iocb object.
1776  **/
1777 static void
1778 lpfc_sli_submit_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
1779                 IOCB_t *iocb, struct lpfc_iocbq *nextiocb)
1780 {
1781         lockdep_assert_held(&phba->hbalock);
1782         /*
1783          * Set up an iotag
1784          */
1785         nextiocb->iocb.ulpIoTag = (nextiocb->iocb_cmpl) ? nextiocb->iotag : 0;
1786 
1787 
1788         if (pring->ringno == LPFC_ELS_RING) {
1789                 lpfc_debugfs_slow_ring_trc(phba,
1790                         "IOCB cmd ring:   wd4:x%08x wd6:x%08x wd7:x%08x",
1791                         *(((uint32_t *) &nextiocb->iocb) + 4),
1792                         *(((uint32_t *) &nextiocb->iocb) + 6),
1793                         *(((uint32_t *) &nextiocb->iocb) + 7));
1794         }
1795 
1796         /*
1797          * Issue iocb command to adapter
1798          */
1799         lpfc_sli_pcimem_bcopy(&nextiocb->iocb, iocb, phba->iocb_cmd_size);
1800         wmb();
1801         pring->stats.iocb_cmd++;
1802 
1803         /*
1804          * If there is no completion routine to call, we can release the
1805          * IOCB buffer back right now. For IOCBs, like QUE_RING_BUF,
1806          * that have no rsp ring completion, iocb_cmpl MUST be NULL.
1807          */
1808         if (nextiocb->iocb_cmpl)
1809                 lpfc_sli_ringtxcmpl_put(phba, pring, nextiocb);
1810         else
1811                 __lpfc_sli_release_iocbq(phba, nextiocb);
1812 
1813         /*
1814          * Let the HBA know what IOCB slot will be the next one the
1815          * driver will put a command into.
1816          */
1817         pring->sli.sli3.cmdidx = pring->sli.sli3.next_cmdidx;
1818         writel(pring->sli.sli3.cmdidx, &phba->host_gp[pring->ringno].cmdPutInx);
1819 }
1820 
1821 /**
1822  * lpfc_sli_update_full_ring - Update the chip attention register
1823  * @phba: Pointer to HBA context object.
1824  * @pring: Pointer to driver SLI ring object.
1825  *
1826  * The caller is not required to hold any lock for calling this function.
1827  * This function updates the chip attention bits for the ring to inform firmware
1828  * that there are pending work to be done for this ring and requests an
1829  * interrupt when there is space available in the ring. This function is
1830  * called when the driver is unable to post more iocbs to the ring due
1831  * to unavailability of space in the ring.
1832  **/
1833 static void
1834 lpfc_sli_update_full_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
1835 {
1836         int ringno = pring->ringno;
1837 
1838         pring->flag |= LPFC_CALL_RING_AVAILABLE;
1839 
1840         wmb();
1841 
1842         /*
1843          * Set ring 'ringno' to SET R0CE_REQ in Chip Att register.
1844          * The HBA will tell us when an IOCB entry is available.
1845          */
1846         writel((CA_R0ATT|CA_R0CE_REQ) << (ringno*4), phba->CAregaddr);
1847         readl(phba->CAregaddr); /* flush */
1848 
1849         pring->stats.iocb_cmd_full++;
1850 }
1851 
1852 /**
1853  * lpfc_sli_update_ring - Update chip attention register
1854  * @phba: Pointer to HBA context object.
1855  * @pring: Pointer to driver SLI ring object.
1856  *
1857  * This function updates the chip attention register bit for the
1858  * given ring to inform HBA that there is more work to be done
1859  * in this ring. The caller is not required to hold any lock.
1860  **/
1861 static void
1862 lpfc_sli_update_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
1863 {
1864         int ringno = pring->ringno;
1865 
1866         /*
1867          * Tell the HBA that there is work to do in this ring.
1868          */
1869         if (!(phba->sli3_options & LPFC_SLI3_CRP_ENABLED)) {
1870                 wmb();
1871                 writel(CA_R0ATT << (ringno * 4), phba->CAregaddr);
1872                 readl(phba->CAregaddr); /* flush */
1873         }
1874 }
1875 
1876 /**
1877  * lpfc_sli_resume_iocb - Process iocbs in the txq
1878  * @phba: Pointer to HBA context object.
1879  * @pring: Pointer to driver SLI ring object.
1880  *
1881  * This function is called with hbalock held to post pending iocbs
1882  * in the txq to the firmware. This function is called when driver
1883  * detects space available in the ring.
1884  **/
1885 static void
1886 lpfc_sli_resume_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
1887 {
1888         IOCB_t *iocb;
1889         struct lpfc_iocbq *nextiocb;
1890 
1891         lockdep_assert_held(&phba->hbalock);
1892 
1893         /*
1894          * Check to see if:
1895          *  (a) there is anything on the txq to send
1896          *  (b) link is up
1897          *  (c) link attention events can be processed (fcp ring only)
1898          *  (d) IOCB processing is not blocked by the outstanding mbox command.
1899          */
1900 
1901         if (lpfc_is_link_up(phba) &&
1902             (!list_empty(&pring->txq)) &&
1903             (pring->ringno != LPFC_FCP_RING ||
1904              phba->sli.sli_flag & LPFC_PROCESS_LA)) {
1905 
1906                 while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) &&
1907                        (nextiocb = lpfc_sli_ringtx_get(phba, pring)))
1908                         lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb);
1909 
1910                 if (iocb)
1911                         lpfc_sli_update_ring(phba, pring);
1912                 else
1913                         lpfc_sli_update_full_ring(phba, pring);
1914         }
1915 
1916         return;
1917 }
1918 
1919 /**
1920  * lpfc_sli_next_hbq_slot - Get next hbq entry for the HBQ
1921  * @phba: Pointer to HBA context object.
1922  * @hbqno: HBQ number.
1923  *
1924  * This function is called with hbalock held to get the next
1925  * available slot for the given HBQ. If there is free slot
1926  * available for the HBQ it will return pointer to the next available
1927  * HBQ entry else it will return NULL.
1928  **/
1929 static struct lpfc_hbq_entry *
1930 lpfc_sli_next_hbq_slot(struct lpfc_hba *phba, uint32_t hbqno)
1931 {
1932         struct hbq_s *hbqp = &phba->hbqs[hbqno];
1933 
1934         lockdep_assert_held(&phba->hbalock);
1935 
1936         if (hbqp->next_hbqPutIdx == hbqp->hbqPutIdx &&
1937             ++hbqp->next_hbqPutIdx >= hbqp->entry_count)
1938                 hbqp->next_hbqPutIdx = 0;
1939 
1940         if (unlikely(hbqp->local_hbqGetIdx == hbqp->next_hbqPutIdx)) {
1941                 uint32_t raw_index = phba->hbq_get[hbqno];
1942                 uint32_t getidx = le32_to_cpu(raw_index);
1943 
1944                 hbqp->local_hbqGetIdx = getidx;
1945 
1946                 if (unlikely(hbqp->local_hbqGetIdx >= hbqp->entry_count)) {
1947                         lpfc_printf_log(phba, KERN_ERR,
1948                                         LOG_SLI | LOG_VPORT,
1949                                         "1802 HBQ %d: local_hbqGetIdx "
1950                                         "%u is > than hbqp->entry_count %u\n",
1951                                         hbqno, hbqp->local_hbqGetIdx,
1952                                         hbqp->entry_count);
1953 
1954                         phba->link_state = LPFC_HBA_ERROR;
1955                         return NULL;
1956                 }
1957 
1958                 if (hbqp->local_hbqGetIdx == hbqp->next_hbqPutIdx)
1959                         return NULL;
1960         }
1961 
1962         return (struct lpfc_hbq_entry *) phba->hbqs[hbqno].hbq_virt +
1963                         hbqp->hbqPutIdx;
1964 }
1965 
1966 /**
1967  * lpfc_sli_hbqbuf_free_all - Free all the hbq buffers
1968  * @phba: Pointer to HBA context object.
1969  *
1970  * This function is called with no lock held to free all the
1971  * hbq buffers while uninitializing the SLI interface. It also
1972  * frees the HBQ buffers returned by the firmware but not yet
1973  * processed by the upper layers.
1974  **/
1975 void
1976 lpfc_sli_hbqbuf_free_all(struct lpfc_hba *phba)
1977 {
1978         struct lpfc_dmabuf *dmabuf, *next_dmabuf;
1979         struct hbq_dmabuf *hbq_buf;
1980         unsigned long flags;
1981         int i, hbq_count;
1982 
1983         hbq_count = lpfc_sli_hbq_count();
1984         /* Return all memory used by all HBQs */
1985         spin_lock_irqsave(&phba->hbalock, flags);
1986         for (i = 0; i < hbq_count; ++i) {
1987                 list_for_each_entry_safe(dmabuf, next_dmabuf,
1988                                 &phba->hbqs[i].hbq_buffer_list, list) {
1989                         hbq_buf = container_of(dmabuf, struct hbq_dmabuf, dbuf);
1990                         list_del(&hbq_buf->dbuf.list);
1991                         (phba->hbqs[i].hbq_free_buffer)(phba, hbq_buf);
1992                 }
1993                 phba->hbqs[i].buffer_count = 0;
1994         }
1995 
1996         /* Mark the HBQs not in use */
1997         phba->hbq_in_use = 0;
1998         spin_unlock_irqrestore(&phba->hbalock, flags);
1999 }
2000 
2001 /**
2002  * lpfc_sli_hbq_to_firmware - Post the hbq buffer to firmware
2003  * @phba: Pointer to HBA context object.
2004  * @hbqno: HBQ number.
2005  * @hbq_buf: Pointer to HBQ buffer.
2006  *
2007  * This function is called with the hbalock held to post a
2008  * hbq buffer to the firmware. If the function finds an empty
2009  * slot in the HBQ, it will post the buffer. The function will return
2010  * pointer to the hbq entry if it successfully post the buffer
2011  * else it will return NULL.
2012  **/
2013 static int
2014 lpfc_sli_hbq_to_firmware(struct lpfc_hba *phba, uint32_t hbqno,
2015                          struct hbq_dmabuf *hbq_buf)
2016 {
2017         lockdep_assert_held(&phba->hbalock);
2018         return phba->lpfc_sli_hbq_to_firmware(phba, hbqno, hbq_buf);
2019 }
2020 
2021 /**
2022  * lpfc_sli_hbq_to_firmware_s3 - Post the hbq buffer to SLI3 firmware
2023  * @phba: Pointer to HBA context object.
2024  * @hbqno: HBQ number.
2025  * @hbq_buf: Pointer to HBQ buffer.
2026  *
2027  * This function is called with the hbalock held to post a hbq buffer to the
2028  * firmware. If the function finds an empty slot in the HBQ, it will post the
2029  * buffer and place it on the hbq_buffer_list. The function will return zero if
2030  * it successfully post the buffer else it will return an error.
2031  **/
2032 static int
2033 lpfc_sli_hbq_to_firmware_s3(struct lpfc_hba *phba, uint32_t hbqno,
2034                             struct hbq_dmabuf *hbq_buf)
2035 {
2036         struct lpfc_hbq_entry *hbqe;
2037         dma_addr_t physaddr = hbq_buf->dbuf.phys;
2038 
2039         lockdep_assert_held(&phba->hbalock);
2040         /* Get next HBQ entry slot to use */
2041         hbqe = lpfc_sli_next_hbq_slot(phba, hbqno);
2042         if (hbqe) {
2043                 struct hbq_s *hbqp = &phba->hbqs[hbqno];
2044 
2045                 hbqe->bde.addrHigh = le32_to_cpu(putPaddrHigh(physaddr));
2046                 hbqe->bde.addrLow  = le32_to_cpu(putPaddrLow(physaddr));
2047                 hbqe->bde.tus.f.bdeSize = hbq_buf->total_size;
2048                 hbqe->bde.tus.f.bdeFlags = 0;
2049                 hbqe->bde.tus.w = le32_to_cpu(hbqe->bde.tus.w);
2050                 hbqe->buffer_tag = le32_to_cpu(hbq_buf->tag);
2051                                 /* Sync SLIM */
2052                 hbqp->hbqPutIdx = hbqp->next_hbqPutIdx;
2053                 writel(hbqp->hbqPutIdx, phba->hbq_put + hbqno);
2054                                 /* flush */
2055                 readl(phba->hbq_put + hbqno);
2056                 list_add_tail(&hbq_buf->dbuf.list, &hbqp->hbq_buffer_list);
2057                 return 0;
2058         } else
2059                 return -ENOMEM;
2060 }
2061 
2062 /**
2063  * lpfc_sli_hbq_to_firmware_s4 - Post the hbq buffer to SLI4 firmware
2064  * @phba: Pointer to HBA context object.
2065  * @hbqno: HBQ number.
2066  * @hbq_buf: Pointer to HBQ buffer.
2067  *
2068  * This function is called with the hbalock held to post an RQE to the SLI4
2069  * firmware. If able to post the RQE to the RQ it will queue the hbq entry to
2070  * the hbq_buffer_list and return zero, otherwise it will return an error.
2071  **/
2072 static int
2073 lpfc_sli_hbq_to_firmware_s4(struct lpfc_hba *phba, uint32_t hbqno,
2074                             struct hbq_dmabuf *hbq_buf)
2075 {
2076         int rc;
2077         struct lpfc_rqe hrqe;
2078         struct lpfc_rqe drqe;
2079         struct lpfc_queue *hrq;
2080         struct lpfc_queue *drq;
2081 
2082         if (hbqno != LPFC_ELS_HBQ)
2083                 return 1;
2084         hrq = phba->sli4_hba.hdr_rq;
2085         drq = phba->sli4_hba.dat_rq;
2086 
2087         lockdep_assert_held(&phba->hbalock);
2088         hrqe.address_lo = putPaddrLow(hbq_buf->hbuf.phys);
2089         hrqe.address_hi = putPaddrHigh(hbq_buf->hbuf.phys);
2090         drqe.address_lo = putPaddrLow(hbq_buf->dbuf.phys);
2091         drqe.address_hi = putPaddrHigh(hbq_buf->dbuf.phys);
2092         rc = lpfc_sli4_rq_put(hrq, drq, &hrqe, &drqe);
2093         if (rc < 0)
2094                 return rc;
2095         hbq_buf->tag = (rc | (hbqno << 16));
2096         list_add_tail(&hbq_buf->dbuf.list, &phba->hbqs[hbqno].hbq_buffer_list);
2097         return 0;
2098 }
2099 
2100 /* HBQ for ELS and CT traffic. */
2101 static struct lpfc_hbq_init lpfc_els_hbq = {
2102         .rn = 1,
2103         .entry_count = 256,
2104         .mask_count = 0,
2105         .profile = 0,
2106         .ring_mask = (1 << LPFC_ELS_RING),
2107         .buffer_count = 0,
2108         .init_count = 40,
2109         .add_count = 40,
2110 };
2111 
2112 /* Array of HBQs */
2113 struct lpfc_hbq_init *lpfc_hbq_defs[] = {
2114         &lpfc_els_hbq,
2115 };
2116 
2117 /**
2118  * lpfc_sli_hbqbuf_fill_hbqs - Post more hbq buffers to HBQ
2119  * @phba: Pointer to HBA context object.
2120  * @hbqno: HBQ number.
2121  * @count: Number of HBQ buffers to be posted.
2122  *
2123  * This function is called with no lock held to post more hbq buffers to the
2124  * given HBQ. The function returns the number of HBQ buffers successfully
2125  * posted.
2126  **/
2127 static int
2128 lpfc_sli_hbqbuf_fill_hbqs(struct lpfc_hba *phba, uint32_t hbqno, uint32_t count)
2129 {
2130         uint32_t i, posted = 0;
2131         unsigned long flags;
2132         struct hbq_dmabuf *hbq_buffer;
2133         LIST_HEAD(hbq_buf_list);
2134         if (!phba->hbqs[hbqno].hbq_alloc_buffer)
2135                 return 0;
2136 
2137         if ((phba->hbqs[hbqno].buffer_count + count) >
2138             lpfc_hbq_defs[hbqno]->entry_count)
2139                 count = lpfc_hbq_defs[hbqno]->entry_count -
2140                                         phba->hbqs[hbqno].buffer_count;
2141         if (!count)
2142                 return 0;
2143         /* Allocate HBQ entries */
2144         for (i = 0; i < count; i++) {
2145                 hbq_buffer = (phba->hbqs[hbqno].hbq_alloc_buffer)(phba);
2146                 if (!hbq_buffer)
2147                         break;
2148                 list_add_tail(&hbq_buffer->dbuf.list, &hbq_buf_list);
2149         }
2150         /* Check whether HBQ is still in use */
2151         spin_lock_irqsave(&phba->hbalock, flags);
2152         if (!phba->hbq_in_use)
2153                 goto err;
2154         while (!list_empty(&hbq_buf_list)) {
2155                 list_remove_head(&hbq_buf_list, hbq_buffer, struct hbq_dmabuf,
2156                                  dbuf.list);
2157                 hbq_buffer->tag = (phba->hbqs[hbqno].buffer_count |
2158                                       (hbqno << 16));
2159                 if (!lpfc_sli_hbq_to_firmware(phba, hbqno, hbq_buffer)) {
2160                         phba->hbqs[hbqno].buffer_count++;
2161                         posted++;
2162                 } else
2163                         (phba->hbqs[hbqno].hbq_free_buffer)(phba, hbq_buffer);
2164         }
2165         spin_unlock_irqrestore(&phba->hbalock, flags);
2166         return posted;
2167 err:
2168         spin_unlock_irqrestore(&phba->hbalock, flags);
2169         while (!list_empty(&hbq_buf_list)) {
2170                 list_remove_head(&hbq_buf_list, hbq_buffer, struct hbq_dmabuf,
2171                                  dbuf.list);
2172                 (phba->hbqs[hbqno].hbq_free_buffer)(phba, hbq_buffer);
2173         }
2174         return 0;
2175 }
2176 
2177 /**
2178  * lpfc_sli_hbqbuf_add_hbqs - Post more HBQ buffers to firmware
2179  * @phba: Pointer to HBA context object.
2180  * @qno: HBQ number.
2181  *
2182  * This function posts more buffers to the HBQ. This function
2183  * is called with no lock held. The function returns the number of HBQ entries
2184  * successfully allocated.
2185  **/
2186 int
2187 lpfc_sli_hbqbuf_add_hbqs(struct lpfc_hba *phba, uint32_t qno)
2188 {
2189         if (phba->sli_rev == LPFC_SLI_REV4)
2190                 return 0;
2191         else
2192                 return lpfc_sli_hbqbuf_fill_hbqs(phba, qno,
2193                                          lpfc_hbq_defs[qno]->add_count);
2194 }
2195 
2196 /**
2197  * lpfc_sli_hbqbuf_init_hbqs - Post initial buffers to the HBQ
2198  * @phba: Pointer to HBA context object.
2199  * @qno:  HBQ queue number.
2200  *
2201  * This function is called from SLI initialization code path with
2202  * no lock held to post initial HBQ buffers to firmware. The
2203  * function returns the number of HBQ entries successfully allocated.
2204  **/
2205 static int
2206 lpfc_sli_hbqbuf_init_hbqs(struct lpfc_hba *phba, uint32_t qno)
2207 {
2208         if (phba->sli_rev == LPFC_SLI_REV4)
2209                 return lpfc_sli_hbqbuf_fill_hbqs(phba, qno,
2210                                         lpfc_hbq_defs[qno]->entry_count);
2211         else
2212                 return lpfc_sli_hbqbuf_fill_hbqs(phba, qno,
2213                                          lpfc_hbq_defs[qno]->init_count);
2214 }
2215 
2216 /**
2217  * lpfc_sli_hbqbuf_get - Remove the first hbq off of an hbq list
2218  * @phba: Pointer to HBA context object.
2219  * @hbqno: HBQ number.
2220  *
2221  * This function removes the first hbq buffer on an hbq list and returns a
2222  * pointer to that buffer. If it finds no buffers on the list it returns NULL.
2223  **/
2224 static struct hbq_dmabuf *
2225 lpfc_sli_hbqbuf_get(struct list_head *rb_list)
2226 {
2227         struct lpfc_dmabuf *d_buf;
2228 
2229         list_remove_head(rb_list, d_buf, struct lpfc_dmabuf, list);
2230         if (!d_buf)
2231                 return NULL;
2232         return container_of(d_buf, struct hbq_dmabuf, dbuf);
2233 }
2234 
2235 /**
2236  * lpfc_sli_rqbuf_get - Remove the first dma buffer off of an RQ list
2237  * @phba: Pointer to HBA context object.
2238  * @hbqno: HBQ number.
2239  *
2240  * This function removes the first RQ buffer on an RQ buffer list and returns a
2241  * pointer to that buffer. If it finds no buffers on the list it returns NULL.
2242  **/
2243 static struct rqb_dmabuf *
2244 lpfc_sli_rqbuf_get(struct lpfc_hba *phba, struct lpfc_queue *hrq)
2245 {
2246         struct lpfc_dmabuf *h_buf;
2247         struct lpfc_rqb *rqbp;
2248 
2249         rqbp = hrq->rqbp;
2250         list_remove_head(&rqbp->rqb_buffer_list, h_buf,
2251                          struct lpfc_dmabuf, list);
2252         if (!h_buf)
2253                 return NULL;
2254         rqbp->buffer_count--;
2255         return container_of(h_buf, struct rqb_dmabuf, hbuf);
2256 }
2257 
2258 /**
2259  * lpfc_sli_hbqbuf_find - Find the hbq buffer associated with a tag
2260  * @phba: Pointer to HBA context object.
2261  * @tag: Tag of the hbq buffer.
2262  *
2263  * This function searches for the hbq buffer associated with the given tag in
2264  * the hbq buffer list. If it finds the hbq buffer, it returns the hbq_buffer
2265  * otherwise it returns NULL.
2266  **/
2267 static struct hbq_dmabuf *
2268 lpfc_sli_hbqbuf_find(struct lpfc_hba *phba, uint32_t tag)
2269 {
2270         struct lpfc_dmabuf *d_buf;
2271         struct hbq_dmabuf *hbq_buf;
2272         uint32_t hbqno;
2273 
2274         hbqno = tag >> 16;
2275         if (hbqno >= LPFC_MAX_HBQS)
2276                 return NULL;
2277 
2278         spin_lock_irq(&phba->hbalock);
2279         list_for_each_entry(d_buf, &phba->hbqs[hbqno].hbq_buffer_list, list) {
2280                 hbq_buf = container_of(d_buf, struct hbq_dmabuf, dbuf);
2281                 if (hbq_buf->tag == tag) {
2282                         spin_unlock_irq(&phba->hbalock);
2283                         return hbq_buf;
2284                 }
2285         }
2286         spin_unlock_irq(&phba->hbalock);
2287         lpfc_printf_log(phba, KERN_ERR, LOG_SLI | LOG_VPORT,
2288                         "1803 Bad hbq tag. Data: x%x x%x\n",
2289                         tag, phba->hbqs[tag >> 16].buffer_count);
2290         return NULL;
2291 }
2292 
2293 /**
2294  * lpfc_sli_free_hbq - Give back the hbq buffer to firmware
2295  * @phba: Pointer to HBA context object.
2296  * @hbq_buffer: Pointer to HBQ buffer.
2297  *
2298  * This function is called with hbalock. This function gives back
2299  * the hbq buffer to firmware. If the HBQ does not have space to
2300  * post the buffer, it will free the buffer.
2301  **/
2302 void
2303 lpfc_sli_free_hbq(struct lpfc_hba *phba, struct hbq_dmabuf *hbq_buffer)
2304 {
2305         uint32_t hbqno;
2306 
2307         if (hbq_buffer) {
2308                 hbqno = hbq_buffer->tag >> 16;
2309                 if (lpfc_sli_hbq_to_firmware(phba, hbqno, hbq_buffer))
2310                         (phba->hbqs[hbqno].hbq_free_buffer)(phba, hbq_buffer);
2311         }
2312 }
2313 
2314 /**
2315  * lpfc_sli_chk_mbx_command - Check if the mailbox is a legitimate mailbox
2316  * @mbxCommand: mailbox command code.
2317  *
2318  * This function is called by the mailbox event handler function to verify
2319  * that the completed mailbox command is a legitimate mailbox command. If the
2320  * completed mailbox is not known to the function, it will return MBX_SHUTDOWN
2321  * and the mailbox event handler will take the HBA offline.
2322  **/
2323 static int
2324 lpfc_sli_chk_mbx_command(uint8_t mbxCommand)
2325 {
2326         uint8_t ret;
2327 
2328         switch (mbxCommand) {
2329         case MBX_LOAD_SM:
2330         case MBX_READ_NV:
2331         case MBX_WRITE_NV:
2332         case MBX_WRITE_VPARMS:
2333         case MBX_RUN_BIU_DIAG:
2334         case MBX_INIT_LINK:
2335         case MBX_DOWN_LINK:
2336         case MBX_CONFIG_LINK:
2337         case MBX_CONFIG_RING:
2338         case MBX_RESET_RING:
2339         case MBX_READ_CONFIG:
2340         case MBX_READ_RCONFIG:
2341         case MBX_READ_SPARM:
2342         case MBX_READ_STATUS:
2343         case MBX_READ_RPI:
2344         case MBX_READ_XRI:
2345         case MBX_READ_REV:
2346         case MBX_READ_LNK_STAT:
2347         case MBX_REG_LOGIN:
2348         case MBX_UNREG_LOGIN:
2349         case MBX_CLEAR_LA:
2350         case MBX_DUMP_MEMORY:
2351         case MBX_DUMP_CONTEXT:
2352         case MBX_RUN_DIAGS:
2353         case MBX_RESTART:
2354         case MBX_UPDATE_CFG:
2355         case MBX_DOWN_LOAD:
2356         case MBX_DEL_LD_ENTRY:
2357         case MBX_RUN_PROGRAM:
2358         case MBX_SET_MASK:
2359         case MBX_SET_VARIABLE:
2360         case MBX_UNREG_D_ID:
2361         case MBX_KILL_BOARD:
2362         case MBX_CONFIG_FARP:
2363         case MBX_BEACON:
2364         case MBX_LOAD_AREA:
2365         case MBX_RUN_BIU_DIAG64:
2366         case MBX_CONFIG_PORT:
2367         case MBX_READ_SPARM64:
2368         case MBX_READ_RPI64:
2369         case MBX_REG_LOGIN64:
2370         case MBX_READ_TOPOLOGY:
2371         case MBX_WRITE_WWN:
2372         case MBX_SET_DEBUG:
2373         case MBX_LOAD_EXP_ROM:
2374         case MBX_ASYNCEVT_ENABLE:
2375         case MBX_REG_VPI:
2376         case MBX_UNREG_VPI:
2377         case MBX_HEARTBEAT:
2378         case MBX_PORT_CAPABILITIES:
2379         case MBX_PORT_IOV_CONTROL:
2380         case MBX_SLI4_CONFIG:
2381         case MBX_SLI4_REQ_FTRS:
2382         case MBX_REG_FCFI:
2383         case MBX_UNREG_FCFI:
2384         case MBX_REG_VFI:
2385         case MBX_UNREG_VFI:
2386         case MBX_INIT_VPI:
2387         case MBX_INIT_VFI:
2388         case MBX_RESUME_RPI:
2389         case MBX_READ_EVENT_LOG_STATUS:
2390         case MBX_READ_EVENT_LOG:
2391         case MBX_SECURITY_MGMT:
2392         case MBX_AUTH_PORT:
2393         case MBX_ACCESS_VDATA:
2394                 ret = mbxCommand;
2395                 break;
2396         default:
2397                 ret = MBX_SHUTDOWN;
2398                 break;
2399         }
2400         return ret;
2401 }
2402 
2403 /**
2404  * lpfc_sli_wake_mbox_wait - lpfc_sli_issue_mbox_wait mbox completion handler
2405  * @phba: Pointer to HBA context object.
2406  * @pmboxq: Pointer to mailbox command.
2407  *
2408  * This is completion handler function for mailbox commands issued from
2409  * lpfc_sli_issue_mbox_wait function. This function is called by the
2410  * mailbox event handler function with no lock held. This function
2411  * will wake up thread waiting on the wait queue pointed by context1
2412  * of the mailbox.
2413  **/
2414 void
2415 lpfc_sli_wake_mbox_wait(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
2416 {
2417         unsigned long drvr_flag;
2418         struct completion *pmbox_done;
2419 
2420         /*
2421          * If pmbox_done is empty, the driver thread gave up waiting and
2422          * continued running.
2423          */
2424         pmboxq->mbox_flag |= LPFC_MBX_WAKE;
2425         spin_lock_irqsave(&phba->hbalock, drvr_flag);
2426         pmbox_done = (struct completion *)pmboxq->context3;
2427         if (pmbox_done)
2428                 complete(pmbox_done);
2429         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
2430         return;
2431 }
2432 
2433 static void
2434 __lpfc_sli_rpi_release(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
2435 {
2436         unsigned long iflags;
2437 
2438         if (ndlp->nlp_flag & NLP_RELEASE_RPI) {
2439                 lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi);
2440                 spin_lock_irqsave(&vport->phba->ndlp_lock, iflags);
2441                 ndlp->nlp_flag &= ~NLP_RELEASE_RPI;
2442                 ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
2443                 spin_unlock_irqrestore(&vport->phba->ndlp_lock, iflags);
2444         }
2445         ndlp->nlp_flag &= ~NLP_UNREG_INP;
2446 }
2447 
2448 /**
2449  * lpfc_sli_def_mbox_cmpl - Default mailbox completion handler
2450  * @phba: Pointer to HBA context object.
2451  * @pmb: Pointer to mailbox object.
2452  *
2453  * This function is the default mailbox completion handler. It
2454  * frees the memory resources associated with the completed mailbox
2455  * command. If the completed command is a REG_LOGIN mailbox command,
2456  * this function will issue a UREG_LOGIN to re-claim the RPI.
2457  **/
2458 void
2459 lpfc_sli_def_mbox_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2460 {
2461         struct lpfc_vport  *vport = pmb->vport;
2462         struct lpfc_dmabuf *mp;
2463         struct lpfc_nodelist *ndlp;
2464         struct Scsi_Host *shost;
2465         uint16_t rpi, vpi;
2466         int rc;
2467 
2468         mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
2469 
2470         if (mp) {
2471                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
2472                 kfree(mp);
2473         }
2474 
2475         /*
2476          * If a REG_LOGIN succeeded  after node is destroyed or node
2477          * is in re-discovery driver need to cleanup the RPI.
2478          */
2479         if (!(phba->pport->load_flag & FC_UNLOADING) &&
2480             pmb->u.mb.mbxCommand == MBX_REG_LOGIN64 &&
2481             !pmb->u.mb.mbxStatus) {
2482                 rpi = pmb->u.mb.un.varWords[0];
2483                 vpi = pmb->u.mb.un.varRegLogin.vpi;
2484                 if (phba->sli_rev == LPFC_SLI_REV4)
2485                         vpi -= phba->sli4_hba.max_cfg_param.vpi_base;
2486                 lpfc_unreg_login(phba, vpi, rpi, pmb);
2487                 pmb->vport = vport;
2488                 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2489                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
2490                 if (rc != MBX_NOT_FINISHED)
2491                         return;
2492         }
2493 
2494         if ((pmb->u.mb.mbxCommand == MBX_REG_VPI) &&
2495                 !(phba->pport->load_flag & FC_UNLOADING) &&
2496                 !pmb->u.mb.mbxStatus) {
2497                 shost = lpfc_shost_from_vport(vport);
2498                 spin_lock_irq(shost->host_lock);
2499                 vport->vpi_state |= LPFC_VPI_REGISTERED;
2500                 vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
2501                 spin_unlock_irq(shost->host_lock);
2502         }
2503 
2504         if (pmb->u.mb.mbxCommand == MBX_REG_LOGIN64) {
2505                 ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
2506                 lpfc_nlp_put(ndlp);
2507                 pmb->ctx_buf = NULL;
2508                 pmb->ctx_ndlp = NULL;
2509         }
2510 
2511         if (pmb->u.mb.mbxCommand == MBX_UNREG_LOGIN) {
2512                 ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
2513 
2514                 /* Check to see if there are any deferred events to process */
2515                 if (ndlp) {
2516                         lpfc_printf_vlog(
2517                                 vport,
2518                                 KERN_INFO, LOG_MBOX | LOG_DISCOVERY,
2519                                 "1438 UNREG cmpl deferred mbox x%x "
2520                                 "on NPort x%x Data: x%x x%x %px\n",
2521                                 ndlp->nlp_rpi, ndlp->nlp_DID,
2522                                 ndlp->nlp_flag, ndlp->nlp_defer_did, ndlp);
2523 
2524                         if ((ndlp->nlp_flag & NLP_UNREG_INP) &&
2525                             (ndlp->nlp_defer_did != NLP_EVT_NOTHING_PENDING)) {
2526                                 ndlp->nlp_flag &= ~NLP_UNREG_INP;
2527                                 ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING;
2528                                 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2529                         } else {
2530                                 __lpfc_sli_rpi_release(vport, ndlp);
2531                         }
2532                         if (vport->load_flag & FC_UNLOADING)
2533                                 lpfc_nlp_put(ndlp);
2534                         pmb->ctx_ndlp = NULL;
2535                 }
2536         }
2537 
2538         /* Check security permission status on INIT_LINK mailbox command */
2539         if ((pmb->u.mb.mbxCommand == MBX_INIT_LINK) &&
2540             (pmb->u.mb.mbxStatus == MBXERR_SEC_NO_PERMISSION))
2541                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
2542                                 "2860 SLI authentication is required "
2543                                 "for INIT_LINK but has not done yet\n");
2544 
2545         if (bf_get(lpfc_mqe_command, &pmb->u.mqe) == MBX_SLI4_CONFIG)
2546                 lpfc_sli4_mbox_cmd_free(phba, pmb);
2547         else
2548                 mempool_free(pmb, phba->mbox_mem_pool);
2549 }
2550  /**
2551  * lpfc_sli4_unreg_rpi_cmpl_clr - mailbox completion handler
2552  * @phba: Pointer to HBA context object.
2553  * @pmb: Pointer to mailbox object.
2554  *
2555  * This function is the unreg rpi mailbox completion handler. It
2556  * frees the memory resources associated with the completed mailbox
2557  * command. An additional refrenece is put on the ndlp to prevent
2558  * lpfc_nlp_release from freeing the rpi bit in the bitmask before
2559  * the unreg mailbox command completes, this routine puts the
2560  * reference back.
2561  *
2562  **/
2563 void
2564 lpfc_sli4_unreg_rpi_cmpl_clr(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2565 {
2566         struct lpfc_vport  *vport = pmb->vport;
2567         struct lpfc_nodelist *ndlp;
2568 
2569         ndlp = pmb->ctx_ndlp;
2570         if (pmb->u.mb.mbxCommand == MBX_UNREG_LOGIN) {
2571                 if (phba->sli_rev == LPFC_SLI_REV4 &&
2572                     (bf_get(lpfc_sli_intf_if_type,
2573                      &phba->sli4_hba.sli_intf) >=
2574                      LPFC_SLI_INTF_IF_TYPE_2)) {
2575                         if (ndlp) {
2576                                 lpfc_printf_vlog(
2577                                         vport, KERN_INFO, LOG_MBOX | LOG_SLI,
2578                                          "0010 UNREG_LOGIN vpi:%x "
2579                                          "rpi:%x DID:%x defer x%x flg x%x "
2580                                          "map:%x %px\n",
2581                                          vport->vpi, ndlp->nlp_rpi,
2582                                          ndlp->nlp_DID, ndlp->nlp_defer_did,
2583                                          ndlp->nlp_flag,
2584                                          ndlp->nlp_usg_map, ndlp);
2585                                 ndlp->nlp_flag &= ~NLP_LOGO_ACC;
2586                                 lpfc_nlp_put(ndlp);
2587 
2588                                 /* Check to see if there are any deferred
2589                                  * events to process
2590                                  */
2591                                 if ((ndlp->nlp_flag & NLP_UNREG_INP) &&
2592                                     (ndlp->nlp_defer_did !=
2593                                     NLP_EVT_NOTHING_PENDING)) {
2594                                         lpfc_printf_vlog(
2595                                                 vport, KERN_INFO, LOG_DISCOVERY,
2596                                                 "4111 UNREG cmpl deferred "
2597                                                 "clr x%x on "
2598                                                 "NPort x%x Data: x%x x%px\n",
2599                                                 ndlp->nlp_rpi, ndlp->nlp_DID,
2600                                                 ndlp->nlp_defer_did, ndlp);
2601                                         ndlp->nlp_flag &= ~NLP_UNREG_INP;
2602                                         ndlp->nlp_defer_did =
2603                                                 NLP_EVT_NOTHING_PENDING;
2604                                         lpfc_issue_els_plogi(
2605                                                 vport, ndlp->nlp_DID, 0);
2606                                 } else {
2607                                         __lpfc_sli_rpi_release(vport, ndlp);
2608                                 }
2609                         }
2610                 }
2611         }
2612 
2613         mempool_free(pmb, phba->mbox_mem_pool);
2614 }
2615 
2616 /**
2617  * lpfc_sli_handle_mb_event - Handle mailbox completions from firmware
2618  * @phba: Pointer to HBA context object.
2619  *
2620  * This function is called with no lock held. This function processes all
2621  * the completed mailbox commands and gives it to upper layers. The interrupt
2622  * service routine processes mailbox completion interrupt and adds completed
2623  * mailbox commands to the mboxq_cmpl queue and signals the worker thread.
2624  * Worker thread call lpfc_sli_handle_mb_event, which will return the
2625  * completed mailbox commands in mboxq_cmpl queue to the upper layers. This
2626  * function returns the mailbox commands to the upper layer by calling the
2627  * completion handler function of each mailbox.
2628  **/
2629 int
2630 lpfc_sli_handle_mb_event(struct lpfc_hba *phba)
2631 {
2632         MAILBOX_t *pmbox;
2633         LPFC_MBOXQ_t *pmb;
2634         int rc;
2635         LIST_HEAD(cmplq);
2636 
2637         phba->sli.slistat.mbox_event++;
2638 
2639         /* Get all completed mailboxe buffers into the cmplq */
2640         spin_lock_irq(&phba->hbalock);
2641         list_splice_init(&phba->sli.mboxq_cmpl, &cmplq);
2642         spin_unlock_irq(&phba->hbalock);
2643 
2644         /* Get a Mailbox buffer to setup mailbox commands for callback */
2645         do {
2646                 list_remove_head(&cmplq, pmb, LPFC_MBOXQ_t, list);
2647                 if (pmb == NULL)
2648                         break;
2649 
2650                 pmbox = &pmb->u.mb;
2651 
2652                 if (pmbox->mbxCommand != MBX_HEARTBEAT) {
2653                         if (pmb->vport) {
2654                                 lpfc_debugfs_disc_trc(pmb->vport,
2655                                         LPFC_DISC_TRC_MBOX_VPORT,
2656                                         "MBOX cmpl vport: cmd:x%x mb:x%x x%x",
2657                                         (uint32_t)pmbox->mbxCommand,
2658                                         pmbox->un.varWords[0],
2659                                         pmbox->un.varWords[1]);
2660                         }
2661                         else {
2662                                 lpfc_debugfs_disc_trc(phba->pport,
2663                                         LPFC_DISC_TRC_MBOX,
2664                                         "MBOX cmpl:       cmd:x%x mb:x%x x%x",
2665                                         (uint32_t)pmbox->mbxCommand,
2666                                         pmbox->un.varWords[0],
2667                                         pmbox->un.varWords[1]);
2668                         }
2669                 }
2670 
2671                 /*
2672                  * It is a fatal error if unknown mbox command completion.
2673                  */
2674                 if (lpfc_sli_chk_mbx_command(pmbox->mbxCommand) ==
2675                     MBX_SHUTDOWN) {
2676                         /* Unknown mailbox command compl */
2677                         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
2678                                         "(%d):0323 Unknown Mailbox command "
2679                                         "x%x (x%x/x%x) Cmpl\n",
2680                                         pmb->vport ? pmb->vport->vpi : 0,
2681                                         pmbox->mbxCommand,
2682                                         lpfc_sli_config_mbox_subsys_get(phba,
2683                                                                         pmb),
2684                                         lpfc_sli_config_mbox_opcode_get(phba,
2685                                                                         pmb));
2686                         phba->link_state = LPFC_HBA_ERROR;
2687                         phba->work_hs = HS_FFER3;
2688                         lpfc_handle_eratt(phba);
2689                         continue;
2690                 }
2691 
2692                 if (pmbox->mbxStatus) {
2693                         phba->sli.slistat.mbox_stat_err++;
2694                         if (pmbox->mbxStatus == MBXERR_NO_RESOURCES) {
2695                                 /* Mbox cmd cmpl error - RETRYing */
2696                                 lpfc_printf_log(phba, KERN_INFO,
2697                                         LOG_MBOX | LOG_SLI,
2698                                         "(%d):0305 Mbox cmd cmpl "
2699                                         "error - RETRYing Data: x%x "
2700                                         "(x%x/x%x) x%x x%x x%x\n",
2701                                         pmb->vport ? pmb->vport->vpi : 0,
2702                                         pmbox->mbxCommand,
2703                                         lpfc_sli_config_mbox_subsys_get(phba,
2704                                                                         pmb),
2705                                         lpfc_sli_config_mbox_opcode_get(phba,
2706                                                                         pmb),
2707                                         pmbox->mbxStatus,
2708                                         pmbox->un.varWords[0],
2709                                         pmb->vport->port_state);
2710                                 pmbox->mbxStatus = 0;
2711                                 pmbox->mbxOwner = OWN_HOST;
2712                                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
2713                                 if (rc != MBX_NOT_FINISHED)
2714                                         continue;
2715                         }
2716                 }
2717 
2718                 /* Mailbox cmd <cmd> Cmpl <cmpl> */
2719                 lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
2720                                 "(%d):0307 Mailbox cmd x%x (x%x/x%x) Cmpl %ps "
2721                                 "Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x "
2722                                 "x%x x%x x%x\n",
2723                                 pmb->vport ? pmb->vport->vpi : 0,
2724                                 pmbox->mbxCommand,
2725                                 lpfc_sli_config_mbox_subsys_get(phba, pmb),
2726                                 lpfc_sli_config_mbox_opcode_get(phba, pmb),
2727                                 pmb->mbox_cmpl,
2728                                 *((uint32_t *) pmbox),
2729                                 pmbox->un.varWords[0],
2730                                 pmbox->un.varWords[1],
2731                                 pmbox->un.varWords[2],
2732                                 pmbox->un.varWords[3],
2733                                 pmbox->un.varWords[4],
2734                                 pmbox->un.varWords[5],
2735                                 pmbox->un.varWords[6],
2736                                 pmbox->un.varWords[7],
2737                                 pmbox->un.varWords[8],
2738                                 pmbox->un.varWords[9],
2739                                 pmbox->un.varWords[10]);
2740 
2741                 if (pmb->mbox_cmpl)
2742                         pmb->mbox_cmpl(phba,pmb);
2743         } while (1);
2744         return 0;
2745 }
2746 
2747 /**
2748  * lpfc_sli_get_buff - Get the buffer associated with the buffer tag
2749  * @phba: Pointer to HBA context object.
2750  * @pring: Pointer to driver SLI ring object.
2751  * @tag: buffer tag.
2752  *
2753  * This function is called with no lock held. When QUE_BUFTAG_BIT bit
2754  * is set in the tag the buffer is posted for a particular exchange,
2755  * the function will return the buffer without replacing the buffer.
2756  * If the buffer is for unsolicited ELS or CT traffic, this function
2757  * returns the buffer and also posts another buffer to the firmware.
2758  **/
2759 static struct lpfc_dmabuf *
2760 lpfc_sli_get_buff(struct lpfc_hba *phba,
2761                   struct lpfc_sli_ring *pring,
2762                   uint32_t tag)
2763 {
2764         struct hbq_dmabuf *hbq_entry;
2765 
2766         if (tag & QUE_BUFTAG_BIT)
2767                 return lpfc_sli_ring_taggedbuf_get(phba, pring, tag);
2768         hbq_entry = lpfc_sli_hbqbuf_find(phba, tag);
2769         if (!hbq_entry)
2770                 return NULL;
2771         return &hbq_entry->dbuf;
2772 }
2773 
2774 /**
2775  * lpfc_complete_unsol_iocb - Complete an unsolicited sequence
2776  * @phba: Pointer to HBA context object.
2777  * @pring: Pointer to driver SLI ring object.
2778  * @saveq: Pointer to the iocbq struct representing the sequence starting frame.
2779  * @fch_r_ctl: the r_ctl for the first frame of the sequence.
2780  * @fch_type: the type for the first frame of the sequence.
2781  *
2782  * This function is called with no lock held. This function uses the r_ctl and
2783  * type of the received sequence to find the correct callback function to call
2784  * to process the sequence.
2785  **/
2786 static int
2787 lpfc_complete_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2788                          struct lpfc_iocbq *saveq, uint32_t fch_r_ctl,
2789                          uint32_t fch_type)
2790 {
2791         int i;
2792 
2793         switch (fch_type) {
2794         case FC_TYPE_NVME:
2795                 lpfc_nvmet_unsol_ls_event(phba, pring, saveq);
2796                 return 1;
2797         default:
2798                 break;
2799         }
2800 
2801         /* unSolicited Responses */
2802         if (pring->prt[0].profile) {
2803                 if (pring->prt[0].lpfc_sli_rcv_unsol_event)
2804                         (pring->prt[0].lpfc_sli_rcv_unsol_event) (phba, pring,
2805                                                                         saveq);
2806                 return 1;
2807         }
2808         /* We must search, based on rctl / type
2809            for the right routine */
2810         for (i = 0; i < pring->num_mask; i++) {
2811                 if ((pring->prt[i].rctl == fch_r_ctl) &&
2812                     (pring->prt[i].type == fch_type)) {
2813                         if (pring->prt[i].lpfc_sli_rcv_unsol_event)
2814                                 (pring->prt[i].lpfc_sli_rcv_unsol_event)
2815                                                 (phba, pring, saveq);
2816                         return 1;
2817                 }
2818         }
2819         return 0;
2820 }
2821 
2822 /**
2823  * lpfc_sli_process_unsol_iocb - Unsolicited iocb handler
2824  * @phba: Pointer to HBA context object.
2825  * @pring: Pointer to driver SLI ring object.
2826  * @saveq: Pointer to the unsolicited iocb.
2827  *
2828  * This function is called with no lock held by the ring event handler
2829  * when there is an unsolicited iocb posted to the response ring by the
2830  * firmware. This function gets the buffer associated with the iocbs
2831  * and calls the event handler for the ring. This function handles both
2832  * qring buffers and hbq buffers.
2833  * When the function returns 1 the caller can free the iocb object otherwise
2834  * upper layer functions will free the iocb objects.
2835  **/
2836 static int
2837 lpfc_sli_process_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2838                             struct lpfc_iocbq *saveq)
2839 {
2840         IOCB_t           * irsp;
2841         WORD5            * w5p;
2842         uint32_t           Rctl, Type;
2843         struct lpfc_iocbq *iocbq;
2844         struct lpfc_dmabuf *dmzbuf;
2845 
2846         irsp = &(saveq->iocb);
2847 
2848         if (irsp->ulpCommand == CMD_ASYNC_STATUS) {
2849                 if (pring->lpfc_sli_rcv_async_status)
2850                         pring->lpfc_sli_rcv_async_status(phba, pring, saveq);
2851                 else
2852                         lpfc_printf_log(phba,
2853                                         KERN_WARNING,
2854                                         LOG_SLI,
2855                                         "0316 Ring %d handler: unexpected "
2856                                         "ASYNC_STATUS iocb received evt_code "
2857                                         "0x%x\n",
2858                                         pring->ringno,
2859                                         irsp->un.asyncstat.evt_code);
2860                 return 1;
2861         }
2862 
2863         if ((irsp->ulpCommand == CMD_IOCB_RET_XRI64_CX) &&
2864                 (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)) {
2865                 if (irsp->ulpBdeCount > 0) {
2866                         dmzbuf = lpfc_sli_get_buff(phba, pring,
2867                                         irsp->un.ulpWord[3]);
2868                         lpfc_in_buf_free(phba, dmzbuf);
2869                 }
2870 
2871                 if (irsp->ulpBdeCount > 1) {
2872                         dmzbuf = lpfc_sli_get_buff(phba, pring,
2873                                         irsp->unsli3.sli3Words[3]);
2874                         lpfc_in_buf_free(phba, dmzbuf);
2875                 }
2876 
2877                 if (irsp->ulpBdeCount > 2) {
2878                         dmzbuf = lpfc_sli_get_buff(phba, pring,
2879                                 irsp->unsli3.sli3Words[7]);
2880                         lpfc_in_buf_free(phba, dmzbuf);
2881                 }
2882 
2883                 return 1;
2884         }
2885 
2886         if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
2887                 if (irsp->ulpBdeCount != 0) {
2888                         saveq->context2 = lpfc_sli_get_buff(phba, pring,
2889                                                 irsp->un.ulpWord[3]);
2890                         if (!saveq->context2)
2891                                 lpfc_printf_log(phba,
2892                                         KERN_ERR,
2893                                         LOG_SLI,
2894                                         "0341 Ring %d Cannot find buffer for "
2895                                         "an unsolicited iocb. tag 0x%x\n",
2896                                         pring->ringno,
2897                                         irsp->un.ulpWord[3]);
2898                 }
2899                 if (irsp->ulpBdeCount == 2) {
2900                         saveq->context3 = lpfc_sli_get_buff(phba, pring,
2901                                                 irsp->unsli3.sli3Words[7]);
2902                         if (!saveq->context3)
2903                                 lpfc_printf_log(phba,
2904                                         KERN_ERR,
2905                                         LOG_SLI,
2906                                         "0342 Ring %d Cannot find buffer for an"
2907                                         " unsolicited iocb. tag 0x%x\n",
2908                                         pring->ringno,
2909                                         irsp->unsli3.sli3Words[7]);
2910                 }
2911                 list_for_each_entry(iocbq, &saveq->list, list) {
2912                         irsp = &(iocbq->iocb);
2913                         if (irsp->ulpBdeCount != 0) {
2914                                 iocbq->context2 = lpfc_sli_get_buff(phba, pring,
2915                                                         irsp->un.ulpWord[3]);
2916                                 if (!iocbq->context2)
2917                                         lpfc_printf_log(phba,
2918                                                 KERN_ERR,
2919                                                 LOG_SLI,
2920                                                 "0343 Ring %d Cannot find "
2921                                                 "buffer for an unsolicited iocb"
2922                                                 ". tag 0x%x\n", pring->ringno,
2923                                                 irsp->un.ulpWord[3]);
2924                         }
2925                         if (irsp->ulpBdeCount == 2) {
2926                                 iocbq->context3 = lpfc_sli_get_buff(phba, pring,
2927                                                 irsp->unsli3.sli3Words[7]);
2928                                 if (!iocbq->context3)
2929                                         lpfc_printf_log(phba,
2930                                                 KERN_ERR,
2931                                                 LOG_SLI,
2932                                                 "0344 Ring %d Cannot find "
2933                                                 "buffer for an unsolicited "
2934                                                 "iocb. tag 0x%x\n",
2935                                                 pring->ringno,
2936                                                 irsp->unsli3.sli3Words[7]);
2937                         }
2938                 }
2939         }
2940         if (irsp->ulpBdeCount != 0 &&
2941             (irsp->ulpCommand == CMD_IOCB_RCV_CONT64_CX ||
2942              irsp->ulpStatus == IOSTAT_INTERMED_RSP)) {
2943                 int found = 0;
2944 
2945                 /* search continue save q for same XRI */
2946                 list_for_each_entry(iocbq, &pring->iocb_continue_saveq, clist) {
2947                         if (iocbq->iocb.unsli3.rcvsli3.ox_id ==
2948                                 saveq->iocb.unsli3.rcvsli3.ox_id) {
2949                                 list_add_tail(&saveq->list, &iocbq->list);
2950                                 found = 1;
2951                                 break;
2952                         }
2953                 }
2954                 if (!found)
2955                         list_add_tail(&saveq->clist,
2956                                       &pring->iocb_continue_saveq);
2957                 if (saveq->iocb.ulpStatus != IOSTAT_INTERMED_RSP) {
2958                         list_del_init(&iocbq->clist);
2959                         saveq = iocbq;
2960                         irsp = &(saveq->iocb);
2961                 } else
2962                         return 0;
2963         }
2964         if ((irsp->ulpCommand == CMD_RCV_ELS_REQ64_CX) ||
2965             (irsp->ulpCommand == CMD_RCV_ELS_REQ_CX) ||
2966             (irsp->ulpCommand == CMD_IOCB_RCV_ELS64_CX)) {
2967                 Rctl = FC_RCTL_ELS_REQ;
2968                 Type = FC_TYPE_ELS;
2969         } else {
2970                 w5p = (WORD5 *)&(saveq->iocb.un.ulpWord[5]);
2971                 Rctl = w5p->hcsw.Rctl;
2972                 Type = w5p->hcsw.Type;
2973 
2974                 /* Firmware Workaround */
2975                 if ((Rctl == 0) && (pring->ringno == LPFC_ELS_RING) &&
2976                         (irsp->ulpCommand == CMD_RCV_SEQUENCE64_CX ||
2977                          irsp->ulpCommand == CMD_IOCB_RCV_SEQ64_CX)) {
2978                         Rctl = FC_RCTL_ELS_REQ;
2979                         Type = FC_TYPE_ELS;
2980                         w5p->hcsw.Rctl = Rctl;
2981                         w5p->hcsw.Type = Type;
2982                 }
2983         }
2984 
2985         if (!lpfc_complete_unsol_iocb(phba, pring, saveq, Rctl, Type))
2986                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
2987                                 "0313 Ring %d handler: unexpected Rctl x%x "
2988                                 "Type x%x received\n",
2989                                 pring->ringno, Rctl, Type);
2990 
2991         return 1;
2992 }
2993 
2994 /**
2995  * lpfc_sli_iocbq_lookup - Find command iocb for the given response iocb
2996  * @phba: Pointer to HBA context object.
2997  * @pring: Pointer to driver SLI ring object.
2998  * @prspiocb: Pointer to response iocb object.
2999  *
3000  * This function looks up the iocb_lookup table to get the command iocb
3001  * corresponding to the given response iocb using the iotag of the
3002  * response iocb. The driver calls this function with the hbalock held
3003  * for SLI3 ports or the ring lock held for SLI4 ports.
3004  * This function returns the command iocb object if it finds the command
3005  * iocb else returns NULL.
3006  **/
3007 static struct lpfc_iocbq *
3008 lpfc_sli_iocbq_lookup(struct lpfc_hba *phba,
3009                       struct lpfc_sli_ring *pring,
3010                       struct lpfc_iocbq *prspiocb)
3011 {
3012         struct lpfc_iocbq *cmd_iocb = NULL;
3013         uint16_t iotag;
3014         spinlock_t *temp_lock = NULL;
3015         unsigned long iflag = 0;
3016 
3017         if (phba->sli_rev == LPFC_SLI_REV4)
3018                 temp_lock = &pring->ring_lock;
3019         else
3020                 temp_lock = &phba->hbalock;
3021 
3022         spin_lock_irqsave(temp_lock, iflag);
3023         iotag = prspiocb->iocb.ulpIoTag;
3024 
3025         if (iotag != 0 && iotag <= phba->sli.last_iotag) {
3026                 cmd_iocb = phba->sli.iocbq_lookup[iotag];
3027                 if (cmd_iocb->iocb_flag & LPFC_IO_ON_TXCMPLQ) {
3028                         /* remove from txcmpl queue list */
3029                         list_del_init(&cmd_iocb->list);
3030                         cmd_iocb->iocb_flag &= ~LPFC_IO_ON_TXCMPLQ;
3031                         pring->txcmplq_cnt--;
3032                         spin_unlock_irqrestore(temp_lock, iflag);
3033                         return cmd_iocb;
3034                 }
3035         }
3036 
3037         spin_unlock_irqrestore(temp_lock, iflag);
3038         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3039                         "0317 iotag x%x is out of "
3040                         "range: max iotag x%x wd0 x%x\n",
3041                         iotag, phba->sli.last_iotag,
3042                         *(((uint32_t *) &prspiocb->iocb) + 7));
3043         return NULL;
3044 }
3045 
3046 /**
3047  * lpfc_sli_iocbq_lookup_by_tag - Find command iocb for the iotag
3048  * @phba: Pointer to HBA context object.
3049  * @pring: Pointer to driver SLI ring object.
3050  * @iotag: IOCB tag.
3051  *
3052  * This function looks up the iocb_lookup table to get the command iocb
3053  * corresponding to the given iotag. The driver calls this function with
3054  * the ring lock held because this function is an SLI4 port only helper.
3055  * This function returns the command iocb object if it finds the command
3056  * iocb else returns NULL.
3057  **/
3058 static struct lpfc_iocbq *
3059 lpfc_sli_iocbq_lookup_by_tag(struct lpfc_hba *phba,
3060                              struct lpfc_sli_ring *pring, uint16_t iotag)
3061 {
3062         struct lpfc_iocbq *cmd_iocb = NULL;
3063         spinlock_t *temp_lock = NULL;
3064         unsigned long iflag = 0;
3065 
3066         if (phba->sli_rev == LPFC_SLI_REV4)
3067                 temp_lock = &pring->ring_lock;
3068         else
3069                 temp_lock = &phba->hbalock;
3070 
3071         spin_lock_irqsave(temp_lock, iflag);
3072         if (iotag != 0 && iotag <= phba->sli.last_iotag) {
3073                 cmd_iocb = phba->sli.iocbq_lookup[iotag];
3074                 if (cmd_iocb->iocb_flag & LPFC_IO_ON_TXCMPLQ) {
3075                         /* remove from txcmpl queue list */
3076                         list_del_init(&cmd_iocb->list);
3077                         cmd_iocb->iocb_flag &= ~LPFC_IO_ON_TXCMPLQ;
3078                         pring->txcmplq_cnt--;
3079                         spin_unlock_irqrestore(temp_lock, iflag);
3080                         return cmd_iocb;
3081                 }
3082         }
3083 
3084         spin_unlock_irqrestore(temp_lock, iflag);
3085         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3086                         "0372 iotag x%x lookup error: max iotag (x%x) "
3087                         "iocb_flag x%x\n",
3088                         iotag, phba->sli.last_iotag,
3089                         cmd_iocb ? cmd_iocb->iocb_flag : 0xffff);
3090         return NULL;
3091 }
3092 
3093 /**
3094  * lpfc_sli_process_sol_iocb - process solicited iocb completion
3095  * @phba: Pointer to HBA context object.
3096  * @pring: Pointer to driver SLI ring object.
3097  * @saveq: Pointer to the response iocb to be processed.
3098  *
3099  * This function is called by the ring event handler for non-fcp
3100  * rings when there is a new response iocb in the response ring.
3101  * The caller is not required to hold any locks. This function
3102  * gets the command iocb associated with the response iocb and
3103  * calls the completion handler for the command iocb. If there
3104  * is no completion handler, the function will free the resources
3105  * associated with command iocb. If the response iocb is for
3106  * an already aborted command iocb, the status of the completion
3107  * is changed to IOSTAT_LOCAL_REJECT/IOERR_SLI_ABORTED.
3108  * This function always returns 1.
3109  **/
3110 static int
3111 lpfc_sli_process_sol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
3112                           struct lpfc_iocbq *saveq)
3113 {
3114         struct lpfc_iocbq *cmdiocbp;
3115         int rc = 1;
3116         unsigned long iflag;
3117 
3118         cmdiocbp = lpfc_sli_iocbq_lookup(phba, pring, saveq);
3119         if (cmdiocbp) {
3120                 if (cmdiocbp->iocb_cmpl) {
3121                         /*
3122                          * If an ELS command failed send an event to mgmt
3123                          * application.
3124                          */
3125                         if (saveq->iocb.ulpStatus &&
3126                              (pring->ringno == LPFC_ELS_RING) &&
3127                              (cmdiocbp->iocb.ulpCommand ==
3128                                 CMD_ELS_REQUEST64_CR))
3129                                 lpfc_send_els_failure_event(phba,
3130                                         cmdiocbp, saveq);
3131 
3132                         /*
3133                          * Post all ELS completions to the worker thread.
3134                          * All other are passed to the completion callback.
3135                          */
3136                         if (pring->ringno == LPFC_ELS_RING) {
3137                                 if ((phba->sli_rev < LPFC_SLI_REV4) &&
3138                                     (cmdiocbp->iocb_flag &
3139                                                         LPFC_DRIVER_ABORTED)) {
3140                                         spin_lock_irqsave(&phba->hbalock,
3141                                                           iflag);
3142                                         cmdiocbp->iocb_flag &=
3143                                                 ~LPFC_DRIVER_ABORTED;
3144                                         spin_unlock_irqrestore(&phba->hbalock,
3145                                                                iflag);
3146                                         saveq->iocb.ulpStatus =
3147                                                 IOSTAT_LOCAL_REJECT;
3148                                         saveq->iocb.un.ulpWord[4] =
3149                                                 IOERR_SLI_ABORTED;
3150 
3151                                         /* Firmware could still be in progress
3152                                          * of DMAing payload, so don't free data
3153                                          * buffer till after a hbeat.
3154                                          */
3155                                         spin_lock_irqsave(&phba->hbalock,
3156                                                           iflag);
3157                                         saveq->iocb_flag |= LPFC_DELAY_MEM_FREE;
3158                                         spin_unlock_irqrestore(&phba->hbalock,
3159                                                                iflag);
3160                                 }
3161                                 if (phba->sli_rev == LPFC_SLI_REV4) {
3162                                         if (saveq->iocb_flag &
3163                                             LPFC_EXCHANGE_BUSY) {
3164                                                 /* Set cmdiocb flag for the
3165                                                  * exchange busy so sgl (xri)
3166                                                  * will not be released until
3167                                                  * the abort xri is received
3168                                                  * from hba.
3169                                                  */
3170                                                 spin_lock_irqsave(
3171                                                         &phba->hbalock, iflag);
3172                                                 cmdiocbp->iocb_flag |=
3173                                                         LPFC_EXCHANGE_BUSY;
3174                                                 spin_unlock_irqrestore(
3175                                                         &phba->hbalock, iflag);
3176                                         }
3177                                         if (cmdiocbp->iocb_flag &
3178                                             LPFC_DRIVER_ABORTED) {
3179                                                 /*
3180                                                  * Clear LPFC_DRIVER_ABORTED
3181                                                  * bit in case it was driver
3182                                                  * initiated abort.
3183                                                  */
3184                                                 spin_lock_irqsave(
3185                                                         &phba->hbalock, iflag);
3186                                                 cmdiocbp->iocb_flag &=
3187                                                         ~LPFC_DRIVER_ABORTED;
3188                                                 spin_unlock_irqrestore(
3189                                                         &phba->hbalock, iflag);
3190                                                 cmdiocbp->iocb.ulpStatus =
3191                                                         IOSTAT_LOCAL_REJECT;
3192                                                 cmdiocbp->iocb.un.ulpWord[4] =
3193                                                         IOERR_ABORT_REQUESTED;
3194                                                 /*
3195                                                  * For SLI4, irsiocb contains
3196                                                  * NO_XRI in sli_xritag, it
3197                                                  * shall not affect releasing
3198                                                  * sgl (xri) process.
3199                                                  */
3200                                                 saveq->iocb.ulpStatus =
3201                                                         IOSTAT_LOCAL_REJECT;
3202                                                 saveq->iocb.un.ulpWord[4] =
3203                                                         IOERR_SLI_ABORTED;
3204                                                 spin_lock_irqsave(
3205                                                         &phba->hbalock, iflag);
3206                                                 saveq->iocb_flag |=
3207                                                         LPFC_DELAY_MEM_FREE;
3208                                                 spin_unlock_irqrestore(
3209                                                         &phba->hbalock, iflag);
3210                                         }
3211                                 }
3212                         }
3213                         (cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq);
3214                 } else
3215                         lpfc_sli_release_iocbq(phba, cmdiocbp);
3216         } else {
3217                 /*
3218                  * Unknown initiating command based on the response iotag.
3219                  * This could be the case on the ELS ring because of
3220                  * lpfc_els_abort().
3221                  */
3222                 if (pring->ringno != LPFC_ELS_RING) {
3223                         /*
3224                          * Ring <ringno> handler: unexpected completion IoTag
3225                          * <IoTag>
3226                          */
3227                         lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
3228                                          "0322 Ring %d handler: "
3229                                          "unexpected completion IoTag x%x "
3230                                          "Data: x%x x%x x%x x%x\n",
3231                                          pring->ringno,
3232                                          saveq->iocb.ulpIoTag,
3233                                          saveq->iocb.ulpStatus,
3234                                          saveq->iocb.un.ulpWord[4],
3235                                          saveq->iocb.ulpCommand,
3236                                          saveq->iocb.ulpContext);
3237                 }
3238         }
3239 
3240         return rc;
3241 }
3242 
3243 /**
3244  * lpfc_sli_rsp_pointers_error - Response ring pointer error handler
3245  * @phba: Pointer to HBA context object.
3246  * @pring: Pointer to driver SLI ring object.
3247  *
3248  * This function is called from the iocb ring event handlers when
3249  * put pointer is ahead of the get pointer for a ring. This function signal
3250  * an error attention condition to the worker thread and the worker
3251  * thread will transition the HBA to offline state.
3252  **/
3253 static void
3254 lpfc_sli_rsp_pointers_error(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
3255 {
3256         struct lpfc_pgp *pgp = &phba->port_gp[pring->ringno];
3257         /*
3258          * Ring <ringno> handler: portRspPut <portRspPut> is bigger than
3259          * rsp ring <portRspMax>
3260          */
3261         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3262                         "0312 Ring %d handler: portRspPut %d "
3263                         "is bigger than rsp ring %d\n",
3264                         pring->ringno, le32_to_cpu(pgp->rspPutInx),
3265                         pring->sli.sli3.numRiocb);
3266 
3267         phba->link_state = LPFC_HBA_ERROR;
3268 
3269         /*
3270          * All error attention handlers are posted to
3271          * worker thread
3272          */
3273         phba->work_ha |= HA_ERATT;
3274         phba->work_hs = HS_FFER3;
3275 
3276         lpfc_worker_wake_up(phba);
3277 
3278         return;
3279 }
3280 
3281 /**
3282  * lpfc_poll_eratt - Error attention polling timer timeout handler
3283  * @ptr: Pointer to address of HBA context object.
3284  *
3285  * This function is invoked by the Error Attention polling timer when the
3286  * timer times out. It will check the SLI Error Attention register for
3287  * possible attention events. If so, it will post an Error Attention event
3288  * and wake up worker thread to process it. Otherwise, it will set up the
3289  * Error Attention polling timer for the next poll.
3290  **/
3291 void lpfc_poll_eratt(struct timer_list *t)
3292 {
3293         struct lpfc_hba *phba;
3294         uint32_t eratt = 0;
3295         uint64_t sli_intr, cnt;
3296 
3297         phba = from_timer(phba, t, eratt_poll);
3298 
3299         /* Here we will also keep track of interrupts per sec of the hba */
3300         sli_intr = phba->sli.slistat.sli_intr;
3301 
3302         if (phba->sli.slistat.sli_prev_intr > sli_intr)
3303                 cnt = (((uint64_t)(-1) - phba->sli.slistat.sli_prev_intr) +
3304                         sli_intr);
3305         else
3306                 cnt = (sli_intr - phba->sli.slistat.sli_prev_intr);
3307 
3308         /* 64-bit integer division not supported on 32-bit x86 - use do_div */
3309         do_div(cnt, phba->eratt_poll_interval);
3310         phba->sli.slistat.sli_ips = cnt;
3311 
3312         phba->sli.slistat.sli_prev_intr = sli_intr;
3313 
3314         /* Check chip HA register for error event */
3315         eratt = lpfc_sli_check_eratt(phba);
3316 
3317         if (eratt)
3318                 /* Tell the worker thread there is work to do */
3319                 lpfc_worker_wake_up(phba);
3320         else
3321                 /* Restart the timer for next eratt poll */
3322                 mod_timer(&phba->eratt_poll,
3323                           jiffies +
3324                           msecs_to_jiffies(1000 * phba->eratt_poll_interval));
3325         return;
3326 }
3327 
3328 
3329 /**
3330  * lpfc_sli_handle_fast_ring_event - Handle ring events on FCP ring
3331  * @phba: Pointer to HBA context object.
3332  * @pring: Pointer to driver SLI ring object.
3333  * @mask: Host attention register mask for this ring.
3334  *
3335  * This function is called from the interrupt context when there is a ring
3336  * event for the fcp ring. The caller does not hold any lock.
3337  * The function processes each response iocb in the response ring until it
3338  * finds an iocb with LE bit set and chains all the iocbs up to the iocb with
3339  * LE bit set. The function will call the completion handler of the command iocb
3340  * if the response iocb indicates a completion for a command iocb or it is
3341  * an abort completion. The function will call lpfc_sli_process_unsol_iocb
3342  * function if this is an unsolicited iocb.
3343  * This routine presumes LPFC_FCP_RING handling and doesn't bother
3344  * to check it explicitly.
3345  */
3346 int
3347 lpfc_sli_handle_fast_ring_event(struct lpfc_hba *phba,
3348                                 struct lpfc_sli_ring *pring, uint32_t mask)
3349 {
3350         struct lpfc_pgp *pgp = &phba->port_gp[pring->ringno];
3351         IOCB_t *irsp = NULL;
3352         IOCB_t *entry = NULL;
3353         struct lpfc_iocbq *cmdiocbq = NULL;
3354         struct lpfc_iocbq rspiocbq;
3355         uint32_t status;
3356         uint32_t portRspPut, portRspMax;
3357         int rc = 1;
3358         lpfc_iocb_type type;
3359         unsigned long iflag;
3360         uint32_t rsp_cmpl = 0;
3361 
3362         spin_lock_irqsave(&phba->hbalock, iflag);
3363         pring->stats.iocb_event++;
3364 
3365         /*
3366          * The next available response entry should never exceed the maximum
3367          * entries.  If it does, treat it as an adapter hardware error.
3368          */
3369         portRspMax = pring->sli.sli3.numRiocb;
3370         portRspPut = le32_to_cpu(pgp->rspPutInx);
3371         if (unlikely(portRspPut >= portRspMax)) {
3372                 lpfc_sli_rsp_pointers_error(phba, pring);
3373                 spin_unlock_irqrestore(&phba->hbalock, iflag);
3374                 return 1;
3375         }
3376         if (phba->fcp_ring_in_use) {
3377                 spin_unlock_irqrestore(&phba->hbalock, iflag);
3378                 return 1;
3379         } else
3380                 phba->fcp_ring_in_use = 1;
3381 
3382         rmb();
3383         while (pring->sli.sli3.rspidx != portRspPut) {
3384                 /*
3385                  * Fetch an entry off the ring and copy it into a local data
3386                  * structure.  The copy involves a byte-swap since the
3387                  * network byte order and pci byte orders are different.
3388                  */
3389                 entry = lpfc_resp_iocb(phba, pring);
3390                 phba->last_completion_time = jiffies;
3391 
3392                 if (++pring->sli.sli3.rspidx >= portRspMax)
3393                         pring->sli.sli3.rspidx = 0;
3394 
3395                 lpfc_sli_pcimem_bcopy((uint32_t *) entry,
3396                                       (uint32_t *) &rspiocbq.iocb,
3397                                       phba->iocb_rsp_size);
3398                 INIT_LIST_HEAD(&(rspiocbq.list));
3399                 irsp = &rspiocbq.iocb;
3400 
3401                 type = lpfc_sli_iocb_cmd_type(irsp->ulpCommand & CMD_IOCB_MASK);
3402                 pring->stats.iocb_rsp++;
3403                 rsp_cmpl++;
3404 
3405                 if (unlikely(irsp->ulpStatus)) {
3406                         /*
3407                          * If resource errors reported from HBA, reduce
3408                          * queuedepths of the SCSI device.
3409                          */
3410                         if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
3411                             ((irsp->un.ulpWord[4] & IOERR_PARAM_MASK) ==
3412                              IOERR_NO_RESOURCES)) {
3413                                 spin_unlock_irqrestore(&phba->hbalock, iflag);
3414                                 phba->lpfc_rampdown_queue_depth(phba);
3415                                 spin_lock_irqsave(&phba->hbalock, iflag);
3416                         }
3417 
3418                         /* Rsp ring <ringno> error: IOCB */
3419                         lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
3420                                         "0336 Rsp Ring %d error: IOCB Data: "
3421                                         "x%x x%x x%x x%x x%x x%x x%x x%x\n",
3422                                         pring->ringno,
3423                                         irsp->un.ulpWord[0],
3424                                         irsp->un.ulpWord[1],
3425                                         irsp->un.ulpWord[2],
3426                                         irsp->un.ulpWord[3],
3427                                         irsp->un.ulpWord[4],
3428                                         irsp->un.ulpWord[5],
3429                                         *(uint32_t *)&irsp->un1,
3430                                         *((uint32_t *)&irsp->un1 + 1));
3431                 }
3432 
3433                 switch (type) {
3434                 case LPFC_ABORT_IOCB:
3435                 case LPFC_SOL_IOCB:
3436                         /*
3437                          * Idle exchange closed via ABTS from port.  No iocb
3438                          * resources need to be recovered.
3439                          */
3440                         if (unlikely(irsp->ulpCommand == CMD_XRI_ABORTED_CX)) {
3441                                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3442                                                 "0333 IOCB cmd 0x%x"
3443                                                 " processed. Skipping"
3444                                                 " completion\n",
3445                                                 irsp->ulpCommand);
3446                                 break;
3447                         }
3448 
3449                         spin_unlock_irqrestore(&phba->hbalock, iflag);
3450                         cmdiocbq = lpfc_sli_iocbq_lookup(phba, pring,
3451                                                          &rspiocbq);
3452                         spin_lock_irqsave(&phba->hbalock, iflag);
3453                         if (unlikely(!cmdiocbq))
3454                                 break;
3455                         if (cmdiocbq->iocb_flag & LPFC_DRIVER_ABORTED)
3456                                 cmdiocbq->iocb_flag &= ~LPFC_DRIVER_ABORTED;
3457                         if (cmdiocbq->iocb_cmpl) {
3458                                 spin_unlock_irqrestore(&phba->hbalock, iflag);
3459                                 (cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
3460                                                       &rspiocbq);
3461                                 spin_lock_irqsave(&phba->hbalock, iflag);
3462                         }
3463                         break;
3464                 case LPFC_UNSOL_IOCB:
3465                         spin_unlock_irqrestore(&phba->hbalock, iflag);
3466                         lpfc_sli_process_unsol_iocb(phba, pring, &rspiocbq);
3467                         spin_lock_irqsave(&phba->hbalock, iflag);
3468                         break;
3469                 default:
3470                         if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
3471                                 char adaptermsg[LPFC_MAX_ADPTMSG];
3472                                 memset(adaptermsg, 0, LPFC_MAX_ADPTMSG);
3473                                 memcpy(&adaptermsg[0], (uint8_t *) irsp,
3474                                        MAX_MSG_DATA);
3475                                 dev_warn(&((phba->pcidev)->dev),
3476                                          "lpfc%d: %s\n",
3477                                          phba->brd_no, adaptermsg);
3478                         } else {
3479                                 /* Unknown IOCB command */
3480                                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3481                                                 "0334 Unknown IOCB command "
3482                                                 "Data: x%x, x%x x%x x%x x%x\n",
3483                                                 type, irsp->ulpCommand,
3484                                                 irsp->ulpStatus,
3485                                                 irsp->ulpIoTag,
3486                                                 irsp->ulpContext);
3487                         }
3488                         break;
3489                 }
3490 
3491                 /*
3492                  * The response IOCB has been processed.  Update the ring
3493                  * pointer in SLIM.  If the port response put pointer has not
3494                  * been updated, sync the pgp->rspPutInx and fetch the new port
3495                  * response put pointer.
3496                  */
3497                 writel(pring->sli.sli3.rspidx,
3498                         &phba->host_gp[pring->ringno].rspGetInx);
3499 
3500                 if (pring->sli.sli3.rspidx == portRspPut)
3501                         portRspPut = le32_to_cpu(pgp->rspPutInx);
3502         }
3503 
3504         if ((rsp_cmpl > 0) && (mask & HA_R0RE_REQ)) {
3505                 pring->stats.iocb_rsp_full++;
3506                 status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
3507                 writel(status, phba->CAregaddr);
3508                 readl(phba->CAregaddr);
3509         }
3510         if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
3511                 pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
3512                 pring->stats.iocb_cmd_empty++;
3513 
3514                 /* Force update of the local copy of cmdGetInx */
3515                 pring->sli.sli3.local_getidx = le32_to_cpu(pgp->cmdGetInx);
3516                 lpfc_sli_resume_iocb(phba, pring);
3517 
3518                 if ((pring->lpfc_sli_cmd_available))
3519                         (pring->lpfc_sli_cmd_available) (phba, pring);
3520 
3521         }
3522 
3523         phba->fcp_ring_in_use = 0;
3524         spin_unlock_irqrestore(&phba->hbalock, iflag);
3525         return rc;
3526 }
3527 
3528 /**
3529  * lpfc_sli_sp_handle_rspiocb - Handle slow-path response iocb
3530  * @phba: Pointer to HBA context object.
3531  * @pring: Pointer to driver SLI ring object.
3532  * @rspiocbp: Pointer to driver response IOCB object.
3533  *
3534  * This function is called from the worker thread when there is a slow-path
3535  * response IOCB to process. This function chains all the response iocbs until
3536  * seeing the iocb with the LE bit set. The function will call
3537  * lpfc_sli_process_sol_iocb function if the response iocb indicates a
3538  * completion of a command iocb. The function will call the
3539  * lpfc_sli_process_unsol_iocb function if this is an unsolicited iocb.
3540  * The function frees the resources or calls the completion handler if this
3541  * iocb is an abort completion. The function returns NULL when the response
3542  * iocb has the LE bit set and all the chained iocbs are processed, otherwise
3543  * this function shall chain the iocb on to the iocb_continueq and return the
3544  * response iocb passed in.
3545  **/
3546 static struct lpfc_iocbq *
3547 lpfc_sli_sp_handle_rspiocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
3548                         struct lpfc_iocbq *rspiocbp)
3549 {
3550         struct lpfc_iocbq *saveq;
3551         struct lpfc_iocbq *cmdiocbp;
3552         struct lpfc_iocbq *next_iocb;
3553         IOCB_t *irsp = NULL;
3554         uint32_t free_saveq;
3555         uint8_t iocb_cmd_type;
3556         lpfc_iocb_type type;
3557         unsigned long iflag;
3558         int rc;
3559 
3560         spin_lock_irqsave(&phba->hbalock, iflag);
3561         /* First add the response iocb to the countinueq list */
3562         list_add_tail(&rspiocbp->list, &(pring->iocb_continueq));
3563         pring->iocb_continueq_cnt++;
3564 
3565         /* Now, determine whether the list is completed for processing */
3566         irsp = &rspiocbp->iocb;
3567         if (irsp->ulpLe) {
3568                 /*
3569                  * By default, the driver expects to free all resources
3570                  * associated with this iocb completion.
3571                  */
3572                 free_saveq = 1;
3573                 saveq = list_get_first(&pring->iocb_continueq,
3574                                        struct lpfc_iocbq, list);
3575                 irsp = &(saveq->iocb);
3576                 list_del_init(&pring->iocb_continueq);
3577                 pring->iocb_continueq_cnt = 0;
3578 
3579                 pring->stats.iocb_rsp++;
3580 
3581                 /*
3582                  * If resource errors reported from HBA, reduce
3583                  * queuedepths of the SCSI device.
3584                  */
3585                 if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
3586                     ((irsp->un.ulpWord[4] & IOERR_PARAM_MASK) ==
3587                      IOERR_NO_RESOURCES)) {
3588                         spin_unlock_irqrestore(&phba->hbalock, iflag);
3589                         phba->lpfc_rampdown_queue_depth(phba);
3590                         spin_lock_irqsave(&phba->hbalock, iflag);
3591                 }
3592 
3593                 if (irsp->ulpStatus) {
3594                         /* Rsp ring <ringno> error: IOCB */
3595                         lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
3596                                         "0328 Rsp Ring %d error: "
3597                                         "IOCB Data: "
3598                                         "x%x x%x x%x x%x "
3599                                         "x%x x%x x%x x%x "
3600                                         "x%x x%x x%x x%x "
3601                                         "x%x x%x x%x x%x\n",
3602                                         pring->ringno,
3603                                         irsp->un.ulpWord[0],
3604                                         irsp->un.ulpWord[1],
3605                                         irsp->un.ulpWord[2],
3606                                         irsp->un.ulpWord[3],
3607                                         irsp->un.ulpWord[4],
3608                                         irsp->un.ulpWord[5],
3609                                         *(((uint32_t *) irsp) + 6),
3610                                         *(((uint32_t *) irsp) + 7),
3611                                         *(((uint32_t *) irsp) + 8),
3612                                         *(((uint32_t *) irsp) + 9),
3613                                         *(((uint32_t *) irsp) + 10),
3614                                         *(((uint32_t *) irsp) + 11),
3615                                         *(((uint32_t *) irsp) + 12),
3616                                         *(((uint32_t *) irsp) + 13),
3617                                         *(((uint32_t *) irsp) + 14),
3618                                         *(((uint32_t *) irsp) + 15));
3619                 }
3620 
3621                 /*
3622                  * Fetch the IOCB command type and call the correct completion
3623                  * routine. Solicited and Unsolicited IOCBs on the ELS ring
3624                  * get freed back to the lpfc_iocb_list by the discovery
3625                  * kernel thread.
3626                  */
3627                 iocb_cmd_type = irsp->ulpCommand & CMD_IOCB_MASK;
3628                 type = lpfc_sli_iocb_cmd_type(iocb_cmd_type);
3629                 switch (type) {
3630                 case LPFC_SOL_IOCB:
3631                         spin_unlock_irqrestore(&phba->hbalock, iflag);
3632                         rc = lpfc_sli_process_sol_iocb(phba, pring, saveq);
3633                         spin_lock_irqsave(&phba->hbalock, iflag);
3634                         break;
3635 
3636                 case LPFC_UNSOL_IOCB:
3637                         spin_unlock_irqrestore(&phba->hbalock, iflag);
3638                         rc = lpfc_sli_process_unsol_iocb(phba, pring, saveq);
3639                         spin_lock_irqsave(&phba->hbalock, iflag);
3640                         if (!rc)
3641                                 free_saveq = 0;
3642                         break;
3643 
3644                 case LPFC_ABORT_IOCB:
3645                         cmdiocbp = NULL;
3646                         if (irsp->ulpCommand != CMD_XRI_ABORTED_CX) {
3647                                 spin_unlock_irqrestore(&phba->hbalock, iflag);
3648                                 cmdiocbp = lpfc_sli_iocbq_lookup(phba, pring,
3649                                                                  saveq);
3650                                 spin_lock_irqsave(&phba->hbalock, iflag);
3651                         }
3652                         if (cmdiocbp) {
3653                                 /* Call the specified completion routine */
3654                                 if (cmdiocbp->iocb_cmpl) {
3655                                         spin_unlock_irqrestore(&phba->hbalock,
3656                                                                iflag);
3657                                         (cmdiocbp->iocb_cmpl)(phba, cmdiocbp,
3658                                                               saveq);
3659                                         spin_lock_irqsave(&phba->hbalock,
3660                                                           iflag);
3661                                 } else
3662                                         __lpfc_sli_release_iocbq(phba,
3663                                                                  cmdiocbp);
3664                         }
3665                         break;
3666 
3667                 case LPFC_UNKNOWN_IOCB:
3668                         if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
3669                                 char adaptermsg[LPFC_MAX_ADPTMSG];
3670                                 memset(adaptermsg, 0, LPFC_MAX_ADPTMSG);
3671                                 memcpy(&adaptermsg[0], (uint8_t *)irsp,
3672                                        MAX_MSG_DATA);
3673                                 dev_warn(&((phba->pcidev)->dev),
3674                                          "lpfc%d: %s\n",
3675                                          phba->brd_no, adaptermsg);
3676                         } else {
3677                                 /* Unknown IOCB command */
3678                                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3679                                                 "0335 Unknown IOCB "
3680                                                 "command Data: x%x "
3681                                                 "x%x x%x x%x\n",
3682                                                 irsp->ulpCommand,
3683                                                 irsp->ulpStatus,
3684                                                 irsp->ulpIoTag,
3685                                                 irsp->ulpContext);
3686                         }
3687                         break;
3688                 }
3689 
3690                 if (free_saveq) {
3691                         list_for_each_entry_safe(rspiocbp, next_iocb,
3692                                                  &saveq->list, list) {
3693                                 list_del_init(&rspiocbp->list);
3694                                 __lpfc_sli_release_iocbq(phba, rspiocbp);
3695                         }
3696                         __lpfc_sli_release_iocbq(phba, saveq);
3697                 }
3698                 rspiocbp = NULL;
3699         }
3700         spin_unlock_irqrestore(&phba->hbalock, iflag);
3701         return rspiocbp;
3702 }
3703 
3704 /**
3705  * lpfc_sli_handle_slow_ring_event - Wrapper func for handling slow-path iocbs
3706  * @phba: Pointer to HBA context object.
3707  * @pring: Pointer to driver SLI ring object.
3708  * @mask: Host attention register mask for this ring.
3709  *
3710  * This routine wraps the actual slow_ring event process routine from the
3711  * API jump table function pointer from the lpfc_hba struct.
3712  **/
3713 void
3714 lpfc_sli_handle_slow_ring_event(struct lpfc_hba *phba,
3715                                 struct lpfc_sli_ring *pring, uint32_t mask)
3716 {
3717         phba->lpfc_sli_handle_slow_ring_event(phba, pring, mask);
3718 }
3719 
3720 /**
3721  * lpfc_sli_handle_slow_ring_event_s3 - Handle SLI3 ring event for non-FCP rings
3722  * @phba: Pointer to HBA context object.
3723  * @pring: Pointer to driver SLI ring object.
3724  * @mask: Host attention register mask for this ring.
3725  *
3726  * This function is called from the worker thread when there is a ring event
3727  * for non-fcp rings. The caller does not hold any lock. The function will
3728  * remove each response iocb in the response ring and calls the handle
3729  * response iocb routine (lpfc_sli_sp_handle_rspiocb) to process it.
3730  **/
3731 static void
3732 lpfc_sli_handle_slow_ring_event_s3(struct lpfc_hba *phba,
3733                                    struct lpfc_sli_ring *pring, uint32_t mask)
3734 {
3735         struct lpfc_pgp *pgp;
3736         IOCB_t *entry;
3737         IOCB_t *irsp = NULL;
3738         struct lpfc_iocbq *rspiocbp = NULL;
3739         uint32_t portRspPut, portRspMax;
3740         unsigned long iflag;
3741         uint32_t status;
3742 
3743         pgp = &phba->port_gp[pring->ringno];
3744         spin_lock_irqsave(&phba->hbalock, iflag);
3745         pring->stats.iocb_event++;
3746 
3747         /*
3748          * The next available response entry should never exceed the maximum
3749          * entries.  If it does, treat it as an adapter hardware error.
3750          */
3751         portRspMax = pring->sli.sli3.numRiocb;
3752         portRspPut = le32_to_cpu(pgp->rspPutInx);
3753         if (portRspPut >= portRspMax) {
3754                 /*
3755                  * Ring <ringno> handler: portRspPut <portRspPut> is bigger than
3756                  * rsp ring <portRspMax>
3757                  */
3758                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3759                                 "0303 Ring %d handler: portRspPut %d "
3760                                 "is bigger than rsp ring %d\n",
3761                                 pring->ringno, portRspPut, portRspMax);
3762 
3763                 phba->link_state = LPFC_HBA_ERROR;
3764                 spin_unlock_irqrestore(&phba->hbalock, iflag);
3765 
3766                 phba->work_hs = HS_FFER3;
3767                 lpfc_handle_eratt(phba);
3768 
3769                 return;
3770         }
3771 
3772         rmb();
3773         while (pring->sli.sli3.rspidx != portRspPut) {
3774                 /*
3775                  * Build a completion list and call the appropriate handler.
3776                  * The process is to get the next available response iocb, get
3777                  * a free iocb from the list, copy the response data into the
3778                  * free iocb, insert to the continuation list, and update the
3779                  * next response index to slim.  This process makes response
3780                  * iocb's in the ring available to DMA as fast as possible but
3781                  * pays a penalty for a copy operation.  Since the iocb is
3782                  * only 32 bytes, this penalty is considered small relative to
3783                  * the PCI reads for register values and a slim write.  When
3784                  * the ulpLe field is set, the entire Command has been
3785                  * received.
3786                  */
3787                 entry = lpfc_resp_iocb(phba, pring);
3788 
3789                 phba->last_completion_time = jiffies;
3790                 rspiocbp = __lpfc_sli_get_iocbq(phba);
3791                 if (rspiocbp == NULL) {
3792                         printk(KERN_ERR "%s: out of buffers! Failing "
3793                                "completion.\n", __func__);
3794                         break;
3795                 }
3796 
3797                 lpfc_sli_pcimem_bcopy(entry, &rspiocbp->iocb,
3798                                       phba->iocb_rsp_size);
3799                 irsp = &rspiocbp->iocb;
3800 
3801                 if (++pring->sli.sli3.rspidx >= portRspMax)
3802                         pring->sli.sli3.rspidx = 0;
3803 
3804                 if (pring->ringno == LPFC_ELS_RING) {
3805                         lpfc_debugfs_slow_ring_trc(phba,
3806                         "IOCB rsp ring:   wd4:x%08x wd6:x%08x wd7:x%08x",
3807                                 *(((uint32_t *) irsp) + 4),
3808                                 *(((uint32_t *) irsp) + 6),
3809                                 *(((uint32_t *) irsp) + 7));
3810                 }
3811 
3812                 writel(pring->sli.sli3.rspidx,
3813                         &phba->host_gp[pring->ringno].rspGetInx);
3814 
3815                 spin_unlock_irqrestore(&phba->hbalock, iflag);
3816                 /* Handle the response IOCB */
3817                 rspiocbp = lpfc_sli_sp_handle_rspiocb(phba, pring, rspiocbp);
3818                 spin_lock_irqsave(&phba->hbalock, iflag);
3819 
3820                 /*
3821                  * If the port response put pointer has not been updated, sync
3822                  * the pgp->rspPutInx in the MAILBOX_tand fetch the new port
3823                  * response put pointer.
3824                  */
3825                 if (pring->sli.sli3.rspidx == portRspPut) {
3826                         portRspPut = le32_to_cpu(pgp->rspPutInx);
3827                 }
3828         } /* while (pring->sli.sli3.rspidx != portRspPut) */
3829 
3830         if ((rspiocbp != NULL) && (mask & HA_R0RE_REQ)) {
3831                 /* At least one response entry has been freed */
3832                 pring->stats.iocb_rsp_full++;
3833                 /* SET RxRE_RSP in Chip Att register */
3834                 status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
3835                 writel(status, phba->CAregaddr);
3836                 readl(phba->CAregaddr); /* flush */
3837         }
3838         if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
3839                 pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
3840                 pring->stats.iocb_cmd_empty++;
3841 
3842                 /* Force update of the local copy of cmdGetInx */
3843                 pring->sli.sli3.local_getidx = le32_to_cpu(pgp->cmdGetInx);
3844                 lpfc_sli_resume_iocb(phba, pring);
3845 
3846                 if ((pring->lpfc_sli_cmd_available))
3847                         (pring->lpfc_sli_cmd_available) (phba, pring);
3848 
3849         }
3850 
3851         spin_unlock_irqrestore(&phba->hbalock, iflag);
3852         return;
3853 }
3854 
3855 /**
3856  * lpfc_sli_handle_slow_ring_event_s4 - Handle SLI4 slow-path els events
3857  * @phba: Pointer to HBA context object.
3858  * @pring: Pointer to driver SLI ring object.
3859  * @mask: Host attention register mask for this ring.
3860  *
3861  * This function is called from the worker thread when there is a pending
3862  * ELS response iocb on the driver internal slow-path response iocb worker
3863  * queue. The caller does not hold any lock. The function will remove each
3864  * response iocb from the response worker queue and calls the handle
3865  * response iocb routine (lpfc_sli_sp_handle_rspiocb) to process it.
3866  **/
3867 static void
3868 lpfc_sli_handle_slow_ring_event_s4(struct lpfc_hba *phba,
3869                                    struct lpfc_sli_ring *pring, uint32_t mask)
3870 {
3871         struct lpfc_iocbq *irspiocbq;
3872         struct hbq_dmabuf *dmabuf;
3873         struct lpfc_cq_event *cq_event;
3874         unsigned long iflag;
3875         int count = 0;
3876 
3877         spin_lock_irqsave(&phba->hbalock, iflag);
3878         phba->hba_flag &= ~HBA_SP_QUEUE_EVT;
3879         spin_unlock_irqrestore(&phba->hbalock, iflag);
3880         while (!list_empty(&phba->sli4_hba.sp_queue_event)) {
3881                 /* Get the response iocb from the head of work queue */
3882                 spin_lock_irqsave(&phba->hbalock, iflag);
3883                 list_remove_head(&phba->sli4_hba.sp_queue_event,
3884                                  cq_event, struct lpfc_cq_event, list);
3885                 spin_unlock_irqrestore(&phba->hbalock, iflag);
3886 
3887                 switch (bf_get(lpfc_wcqe_c_code, &cq_event->cqe.wcqe_cmpl)) {
3888                 case CQE_CODE_COMPL_WQE:
3889                         irspiocbq = container_of(cq_event, struct lpfc_iocbq,
3890                                                  cq_event);
3891                         /* Translate ELS WCQE to response IOCBQ */
3892                         irspiocbq = lpfc_sli4_els_wcqe_to_rspiocbq(phba,
3893                                                                    irspiocbq);
3894                         if (irspiocbq)
3895                                 lpfc_sli_sp_handle_rspiocb(phba, pring,
3896                                                            irspiocbq);
3897                         count++;
3898                         break;
3899                 case CQE_CODE_RECEIVE:
3900                 case CQE_CODE_RECEIVE_V1:
3901                         dmabuf = container_of(cq_event, struct hbq_dmabuf,
3902                                               cq_event);
3903                         lpfc_sli4_handle_received_buffer(phba, dmabuf);
3904                         count++;
3905                         break;
3906                 default:
3907                         break;
3908                 }
3909 
3910                 /* Limit the number of events to 64 to avoid soft lockups */
3911                 if (count == 64)
3912                         break;
3913         }
3914 }
3915 
3916 /**
3917  * lpfc_sli_abort_iocb_ring - Abort all iocbs in the ring
3918  * @phba: Pointer to HBA context object.
3919  * @pring: Pointer to driver SLI ring object.
3920  *
3921  * This function aborts all iocbs in the given ring and frees all the iocb
3922  * objects in txq. This function issues an abort iocb for all the iocb commands
3923  * in txcmplq. The iocbs in the txcmplq is not guaranteed to complete before
3924  * the return of this function. The caller is not required to hold any locks.
3925  **/
3926 void
3927 lpfc_sli_abort_iocb_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
3928 {
3929         LIST_HEAD(completions);
3930         struct lpfc_iocbq *iocb, *next_iocb;
3931 
3932         if (pring->ringno == LPFC_ELS_RING) {
3933                 lpfc_fabric_abort_hba(phba);
3934         }
3935 
3936         /* Error everything on txq and txcmplq
3937          * First do the txq.
3938          */
3939         if (phba->sli_rev >= LPFC_SLI_REV4) {
3940                 spin_lock_irq(&pring->ring_lock);
3941                 list_splice_init(&pring->txq, &completions);
3942                 pring->txq_cnt = 0;
3943                 spin_unlock_irq(&pring->ring_lock);
3944 
3945                 spin_lock_irq(&phba->hbalock);
3946                 /* Next issue ABTS for everything on the txcmplq */
3947                 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list)
3948                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
3949                 spin_unlock_irq(&phba->hbalock);
3950         } else {
3951                 spin_lock_irq(&phba->hbalock);
3952                 list_splice_init(&pring->txq, &completions);
3953                 pring->txq_cnt = 0;
3954 
3955                 /* Next issue ABTS for everything on the txcmplq */
3956                 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list)
3957                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
3958                 spin_unlock_irq(&phba->hbalock);
3959         }
3960 
3961         /* Cancel all the IOCBs from the completions list */
3962         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
3963                               IOERR_SLI_ABORTED);
3964 }
3965 
3966 /**
3967  * lpfc_sli_abort_fcp_rings - Abort all iocbs in all FCP rings
3968  * @phba: Pointer to HBA context object.
3969  * @pring: Pointer to driver SLI ring object.
3970  *
3971  * This function aborts all iocbs in FCP rings and frees all the iocb
3972  * objects in txq. This function issues an abort iocb for all the iocb commands
3973  * in txcmplq. The iocbs in the txcmplq is not guaranteed to complete before
3974  * the return of this function. The caller is not required to hold any locks.
3975  **/
3976 void
3977 lpfc_sli_abort_fcp_rings(struct lpfc_hba *phba)
3978 {
3979         struct lpfc_sli *psli = &phba->sli;
3980         struct lpfc_sli_ring  *pring;
3981         uint32_t i;
3982 
3983         /* Look on all the FCP Rings for the iotag */
3984         if (phba->sli_rev >= LPFC_SLI_REV4) {
3985                 for (i = 0; i < phba->cfg_hdw_queue; i++) {
3986                         pring = phba->sli4_hba.hdwq[i].io_wq->pring;
3987                         lpfc_sli_abort_iocb_ring(phba, pring);
3988                 }
3989         } else {
3990                 pring = &psli->sli3_ring[LPFC_FCP_RING];
3991                 lpfc_sli_abort_iocb_ring(phba, pring);
3992         }
3993 }
3994 
3995 /**
3996  * lpfc_sli_flush_io_rings - flush all iocbs in the IO ring
3997  * @phba: Pointer to HBA context object.
3998  *
3999  * This function flushes all iocbs in the IO ring and frees all the iocb
4000  * objects in txq and txcmplq. This function will not issue abort iocbs
4001  * for all the iocb commands in txcmplq, they will just be returned with
4002  * IOERR_SLI_DOWN. This function is invoked with EEH when device's PCI
4003  * slot has been permanently disabled.
4004  **/
4005 void
4006 lpfc_sli_flush_io_rings(struct lpfc_hba *phba)
4007 {
4008         LIST_HEAD(txq);
4009         LIST_HEAD(txcmplq);
4010         struct lpfc_sli *psli = &phba->sli;
4011         struct lpfc_sli_ring  *pring;
4012         uint32_t i;
4013         struct lpfc_iocbq *piocb, *next_iocb;
4014 
4015         spin_lock_irq(&phba->hbalock);
4016         if (phba->hba_flag & HBA_IOQ_FLUSH ||
4017             !phba->sli4_hba.hdwq) {
4018                 spin_unlock_irq(&phba->hbalock);
4019                 return;
4020         }
4021         /* Indicate the I/O queues are flushed */
4022         phba->hba_flag |= HBA_IOQ_FLUSH;
4023         spin_unlock_irq(&phba->hbalock);
4024 
4025         /* Look on all the FCP Rings for the iotag */
4026         if (phba->sli_rev >= LPFC_SLI_REV4) {
4027                 for (i = 0; i < phba->cfg_hdw_queue; i++) {
4028                         pring = phba->sli4_hba.hdwq[i].io_wq->pring;
4029 
4030                         spin_lock_irq(&pring->ring_lock);
4031                         /* Retrieve everything on txq */
4032                         list_splice_init(&pring->txq, &txq);
4033                         list_for_each_entry_safe(piocb, next_iocb,
4034                                                  &pring->txcmplq, list)
4035                                 piocb->iocb_flag &= ~LPFC_IO_ON_TXCMPLQ;
4036                         /* Retrieve everything on the txcmplq */
4037                         list_splice_init(&pring->txcmplq, &txcmplq);
4038                         pring->txq_cnt = 0;
4039                         pring->txcmplq_cnt = 0;
4040                         spin_unlock_irq(&pring->ring_lock);
4041 
4042                         /* Flush the txq */
4043                         lpfc_sli_cancel_iocbs(phba, &txq,
4044                                               IOSTAT_LOCAL_REJECT,
4045                                               IOERR_SLI_DOWN);
4046                         /* Flush the txcmpq */
4047                         lpfc_sli_cancel_iocbs(phba, &txcmplq,
4048                                               IOSTAT_LOCAL_REJECT,
4049                                               IOERR_SLI_DOWN);
4050                 }
4051         } else {
4052                 pring = &psli->sli3_ring[LPFC_FCP_RING];
4053 
4054                 spin_lock_irq(&phba->hbalock);
4055                 /* Retrieve everything on txq */
4056                 list_splice_init(&pring->txq, &txq);
4057                 list_for_each_entry_safe(piocb, next_iocb,
4058                                          &pring->txcmplq, list)
4059                         piocb->iocb_flag &= ~LPFC_IO_ON_TXCMPLQ;
4060                 /* Retrieve everything on the txcmplq */
4061                 list_splice_init(&pring->txcmplq, &txcmplq);
4062                 pring->txq_cnt = 0;
4063                 pring->txcmplq_cnt = 0;
4064                 spin_unlock_irq(&phba->hbalock);
4065 
4066                 /* Flush the txq */
4067                 lpfc_sli_cancel_iocbs(phba, &txq, IOSTAT_LOCAL_REJECT,
4068                                       IOERR_SLI_DOWN);
4069                 /* Flush the txcmpq */
4070                 lpfc_sli_cancel_iocbs(phba, &txcmplq, IOSTAT_LOCAL_REJECT,
4071                                       IOERR_SLI_DOWN);
4072         }
4073 }
4074 
4075 /**
4076  * lpfc_sli_brdready_s3 - Check for sli3 host ready status
4077  * @phba: Pointer to HBA context object.
4078  * @mask: Bit mask to be checked.
4079  *
4080  * This function reads the host status register and compares
4081  * with the provided bit mask to check if HBA completed
4082  * the restart. This function will wait in a loop for the
4083  * HBA to complete restart. If the HBA does not restart within
4084  * 15 iterations, the function will reset the HBA again. The
4085  * function returns 1 when HBA fail to restart otherwise returns
4086  * zero.
4087  **/
4088 static int
4089 lpfc_sli_brdready_s3(struct lpfc_hba *phba, uint32_t mask)
4090 {
4091         uint32_t status;
4092         int i = 0;
4093         int retval = 0;
4094 
4095         /* Read the HBA Host Status Register */
4096         if (lpfc_readl(phba->HSregaddr, &status))
4097                 return 1;
4098 
4099         /*
4100          * Check status register every 100ms for 5 retries, then every
4101          * 500ms for 5, then every 2.5 sec for 5, then reset board and
4102          * every 2.5 sec for 4.
4103          * Break our of the loop if errors occurred during init.
4104          */
4105         while (((status & mask) != mask) &&
4106                !(status & HS_FFERM) &&
4107                i++ < 20) {
4108 
4109                 if (i <= 5)
4110                         msleep(10);
4111                 else if (i <= 10)
4112                         msleep(500);
4113                 else
4114                         msleep(2500);
4115 
4116                 if (i == 15) {
4117                                 /* Do post */
4118                         phba->pport->port_state = LPFC_VPORT_UNKNOWN;
4119                         lpfc_sli_brdrestart(phba);
4120                 }
4121                 /* Read the HBA Host Status Register */
4122                 if (lpfc_readl(phba->HSregaddr, &status)) {
4123                         retval = 1;
4124                         break;
4125                 }
4126         }
4127 
4128         /* Check to see if any errors occurred during init */
4129         if ((status & HS_FFERM) || (i >= 20)) {
4130                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4131                                 "2751 Adapter failed to restart, "
4132                                 "status reg x%x, FW Data: A8 x%x AC x%x\n",
4133                                 status,
4134                                 readl(phba->MBslimaddr + 0xa8),
4135                                 readl(phba->MBslimaddr + 0xac));
4136                 phba->link_state = LPFC_HBA_ERROR;
4137                 retval = 1;
4138         }
4139 
4140         return retval;
4141 }
4142 
4143 /**
4144  * lpfc_sli_brdready_s4 - Check for sli4 host ready status
4145  * @phba: Pointer to HBA context object.
4146  * @mask: Bit mask to be checked.
4147  *
4148  * This function checks the host status register to check if HBA is
4149  * ready. This function will wait in a loop for the HBA to be ready
4150  * If the HBA is not ready , the function will will reset the HBA PCI
4151  * function again. The function returns 1 when HBA fail to be ready
4152  * otherwise returns zero.
4153  **/
4154 static int
4155 lpfc_sli_brdready_s4(struct lpfc_hba *phba, uint32_t mask)
4156 {
4157         uint32_t status;
4158         int retval = 0;
4159 
4160         /* Read the HBA Host Status Register */
4161         status = lpfc_sli4_post_status_check(phba);
4162 
4163         if (status) {
4164                 phba->pport->port_state = LPFC_VPORT_UNKNOWN;
4165                 lpfc_sli_brdrestart(phba);
4166                 status = lpfc_sli4_post_status_check(phba);
4167         }
4168 
4169         /* Check to see if any errors occurred during init */
4170         if (status) {
4171                 phba->link_state = LPFC_HBA_ERROR;
4172                 retval = 1;
4173         } else
4174                 phba->sli4_hba.intr_enable = 0;
4175 
4176         return retval;
4177 }
4178 
4179 /**
4180  * lpfc_sli_brdready - Wrapper func for checking the hba readyness
4181  * @phba: Pointer to HBA context object.
4182  * @mask: Bit mask to be checked.
4183  *
4184  * This routine wraps the actual SLI3 or SLI4 hba readyness check routine
4185  * from the API jump table function pointer from the lpfc_hba struct.
4186  **/
4187 int
4188 lpfc_sli_brdready(struct lpfc_hba *phba, uint32_t mask)
4189 {
4190         return phba->lpfc_sli_brdready(phba, mask);
4191 }
4192 
4193 #define BARRIER_TEST_PATTERN (0xdeadbeef)
4194 
4195 /**
4196  * lpfc_reset_barrier - Make HBA ready for HBA reset
4197  * @phba: Pointer to HBA context object.
4198  *
4199  * This function is called before resetting an HBA. This function is called
4200  * with hbalock held and requests HBA to quiesce DMAs before a reset.
4201  **/
4202 void lpfc_reset_barrier(struct lpfc_hba *phba)
4203 {
4204         uint32_t __iomem *resp_buf;
4205         uint32_t __iomem *mbox_buf;
4206         volatile uint32_t mbox;
4207         uint32_t hc_copy, ha_copy, resp_data;
4208         int  i;
4209         uint8_t hdrtype;
4210 
4211         lockdep_assert_held(&phba->hbalock);
4212 
4213         pci_read_config_byte(phba->pcidev, PCI_HEADER_TYPE, &hdrtype);
4214         if (hdrtype != 0x80 ||
4215             (FC_JEDEC_ID(phba->vpd.rev.biuRev) != HELIOS_JEDEC_ID &&
4216              FC_JEDEC_ID(phba->vpd.rev.biuRev) != THOR_JEDEC_ID))
4217                 return;
4218 
4219         /*
4220          * Tell the other part of the chip to suspend temporarily all
4221          * its DMA activity.
4222          */
4223         resp_buf = phba->MBslimaddr;
4224 
4225         /* Disable the error attention */
4226         if (lpfc_readl(phba->HCregaddr, &hc_copy))
4227                 return;
4228         writel((hc_copy & ~HC_ERINT_ENA), phba->HCregaddr);
4229         readl(phba->HCregaddr); /* flush */
4230         phba->link_flag |= LS_IGNORE_ERATT;
4231 
4232         if (lpfc_readl(phba->HAregaddr, &ha_copy))
4233                 return;
4234         if (ha_copy & HA_ERATT) {
4235                 /* Clear Chip error bit */
4236                 writel(HA_ERATT, phba->HAregaddr);
4237                 phba->pport->stopped = 1;
4238         }
4239 
4240         mbox = 0;
4241         ((MAILBOX_t *)&mbox)->mbxCommand = MBX_KILL_BOARD;
4242         ((MAILBOX_t *)&mbox)->mbxOwner = OWN_CHIP;
4243 
4244         writel(BARRIER_TEST_PATTERN, (resp_buf + 1));
4245         mbox_buf = phba->MBslimaddr;
4246         writel(mbox, mbox_buf);
4247 
4248         for (i = 0; i < 50; i++) {
4249                 if (lpfc_readl((resp_buf + 1), &resp_data))
4250                         return;
4251                 if (resp_data != ~(BARRIER_TEST_PATTERN))
4252                         mdelay(1);
4253                 else
4254                         break;
4255         }
4256         resp_data = 0;
4257         if (lpfc_readl((resp_buf + 1), &resp_data))
4258                 return;
4259         if (resp_data  != ~(BARRIER_TEST_PATTERN)) {
4260                 if (phba->sli.sli_flag & LPFC_SLI_ACTIVE ||
4261                     phba->pport->stopped)
4262                         goto restore_hc;
4263                 else
4264                         goto clear_errat;
4265         }
4266 
4267         ((MAILBOX_t *)&mbox)->mbxOwner = OWN_HOST;
4268         resp_data = 0;
4269         for (i = 0; i < 500; i++) {
4270                 if (lpfc_readl(resp_buf, &resp_data))
4271                         return;
4272                 if (resp_data != mbox)
4273                         mdelay(1);
4274                 else
4275                         break;
4276         }
4277 
4278 clear_errat:
4279 
4280         while (++i < 500) {
4281                 if (lpfc_readl(phba->HAregaddr, &ha_copy))
4282                         return;
4283                 if (!(ha_copy & HA_ERATT))
4284                         mdelay(1);
4285                 else
4286                         break;
4287         }
4288 
4289         if (readl(phba->HAregaddr) & HA_ERATT) {
4290                 writel(HA_ERATT, phba->HAregaddr);
4291                 phba->pport->stopped = 1;
4292         }
4293 
4294 restore_hc:
4295         phba->link_flag &= ~LS_IGNORE_ERATT;
4296         writel(hc_copy, phba->HCregaddr);
4297         readl(phba->HCregaddr); /* flush */
4298 }
4299 
4300 /**
4301  * lpfc_sli_brdkill - Issue a kill_board mailbox command
4302  * @phba: Pointer to HBA context object.
4303  *
4304  * This function issues a kill_board mailbox command and waits for
4305  * the error attention interrupt. This function is called for stopping
4306  * the firmware processing. The caller is not required to hold any
4307  * locks. This function calls lpfc_hba_down_post function to free
4308  * any pending commands after the kill. The function will return 1 when it
4309  * fails to kill the board else will return 0.
4310  **/
4311 int
4312 lpfc_sli_brdkill(struct lpfc_hba *phba)
4313 {
4314         struct lpfc_sli *psli;
4315         LPFC_MBOXQ_t *pmb;
4316         uint32_t status;
4317         uint32_t ha_copy;
4318         int retval;
4319         int i = 0;
4320 
4321         psli = &phba->sli;
4322 
4323         /* Kill HBA */
4324         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
4325                         "0329 Kill HBA Data: x%x x%x\n",
4326                         phba->pport->port_state, psli->sli_flag);
4327 
4328         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4329         if (!pmb)
4330                 return 1;
4331 
4332         /* Disable the error attention */
4333         spin_lock_irq(&phba->hbalock);
4334         if (lpfc_readl(phba->HCregaddr, &status)) {
4335                 spin_unlock_irq(&phba->hbalock);
4336                 mempool_free(pmb, phba->mbox_mem_pool);
4337                 return 1;
4338         }
4339         status &= ~HC_ERINT_ENA;
4340         writel(status, phba->HCregaddr);
4341         readl(phba->HCregaddr); /* flush */
4342         phba->link_flag |= LS_IGNORE_ERATT;
4343         spin_unlock_irq(&phba->hbalock);
4344 
4345         lpfc_kill_board(phba, pmb);
4346         pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4347         retval = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
4348 
4349         if (retval != MBX_SUCCESS) {
4350                 if (retval != MBX_BUSY)
4351                         mempool_free(pmb, phba->mbox_mem_pool);
4352                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
4353                                 "2752 KILL_BOARD command failed retval %d\n",
4354                                 retval);
4355                 spin_lock_irq(&phba->hbalock);
4356                 phba->link_flag &= ~LS_IGNORE_ERATT;
4357                 spin_unlock_irq(&phba->hbalock);
4358                 return 1;
4359         }
4360 
4361         spin_lock_irq(&phba->hbalock);
4362         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
4363         spin_unlock_irq(&phba->hbalock);
4364 
4365         mempool_free(pmb, phba->mbox_mem_pool);
4366 
4367         /* There is no completion for a KILL_BOARD mbox cmd. Check for an error
4368          * attention every 100ms for 3 seconds. If we don't get ERATT after
4369          * 3 seconds we still set HBA_ERROR state because the status of the
4370          * board is now undefined.
4371          */
4372         if (lpfc_readl(phba->HAregaddr, &ha_copy))
4373                 return 1;
4374         while ((i++ < 30) && !(ha_copy & HA_ERATT)) {
4375                 mdelay(100);
4376                 if (lpfc_readl(phba->HAregaddr, &ha_copy))
4377                         return 1;
4378         }
4379 
4380         del_timer_sync(&psli->mbox_tmo);
4381         if (ha_copy & HA_ERATT) {
4382                 writel(HA_ERATT, phba->HAregaddr);
4383                 phba->pport->stopped = 1;
4384         }
4385         spin_lock_irq(&phba->hbalock);
4386         psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
4387         psli->mbox_active = NULL;
4388         phba->link_flag &= ~LS_IGNORE_ERATT;
4389         spin_unlock_irq(&phba->hbalock);
4390 
4391         lpfc_hba_down_post(phba);
4392         phba->link_state = LPFC_HBA_ERROR;
4393 
4394         return ha_copy & HA_ERATT ? 0 : 1;
4395 }
4396 
4397 /**
4398  * lpfc_sli_brdreset - Reset a sli-2 or sli-3 HBA
4399  * @phba: Pointer to HBA context object.
4400  *
4401  * This function resets the HBA by writing HC_INITFF to the control
4402  * register. After the HBA resets, this function resets all the iocb ring
4403  * indices. This function disables PCI layer parity checking during
4404  * the reset.
4405  * This function returns 0 always.
4406  * The caller is not required to hold any locks.
4407  **/
4408 int
4409 lpfc_sli_brdreset(struct lpfc_hba *phba)
4410 {
4411         struct lpfc_sli *psli;
4412         struct lpfc_sli_ring *pring;
4413         uint16_t cfg_value;
4414         int i;
4415 
4416         psli = &phba->sli;
4417 
4418         /* Reset HBA */
4419         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
4420                         "0325 Reset HBA Data: x%x x%x\n",
4421                         (phba->pport) ? phba->pport->port_state : 0,
4422                         psli->sli_flag);
4423 
4424         /* perform board reset */
4425         phba->fc_eventTag = 0;
4426         phba->link_events = 0;
4427         if (phba->pport) {
4428                 phba->pport->fc_myDID = 0;
4429                 phba->pport->fc_prevDID = 0;
4430         }
4431 
4432         /* Turn off parity checking and serr during the physical reset */
4433         if (pci_read_config_word(phba->pcidev, PCI_COMMAND, &cfg_value))
4434                 return -EIO;
4435 
4436         pci_write_config_word(phba->pcidev, PCI_COMMAND,
4437                               (cfg_value &
4438                                ~(PCI_COMMAND_PARITY | PCI_COMMAND_SERR)));
4439 
4440         psli->sli_flag &= ~(LPFC_SLI_ACTIVE | LPFC_PROCESS_LA);
4441 
4442         /* Now toggle INITFF bit in the Host Control Register */
4443         writel(HC_INITFF, phba->HCregaddr);
4444         mdelay(1);
4445         readl(phba->HCregaddr); /* flush */
4446         writel(0, phba->HCregaddr);
4447         readl(phba->HCregaddr); /* flush */
4448 
4449         /* Restore PCI cmd register */
4450         pci_write_config_word(phba->pcidev, PCI_COMMAND, cfg_value);
4451 
4452         /* Initialize relevant SLI info */
4453         for (i = 0; i < psli->num_rings; i++) {
4454                 pring = &psli->sli3_ring[i];
4455                 pring->flag = 0;
4456                 pring->sli.sli3.rspidx = 0;
4457                 pring->sli.sli3.next_cmdidx  = 0;
4458                 pring->sli.sli3.local_getidx = 0;
4459                 pring->sli.sli3.cmdidx = 0;
4460                 pring->missbufcnt = 0;
4461         }
4462 
4463         phba->link_state = LPFC_WARM_START;
4464         return 0;
4465 }
4466 
4467 /**
4468  * lpfc_sli4_brdreset - Reset a sli-4 HBA
4469  * @phba: Pointer to HBA context object.
4470  *
4471  * This function resets a SLI4 HBA. This function disables PCI layer parity
4472  * checking during resets the device. The caller is not required to hold
4473  * any locks.
4474  *
4475  * This function returns 0 on success else returns negative error code.
4476  **/
4477 int
4478 lpfc_sli4_brdreset(struct lpfc_hba *phba)
4479 {
4480         struct lpfc_sli *psli = &phba->sli;
4481         uint16_t cfg_value;
4482         int rc = 0;
4483 
4484         /* Reset HBA */
4485         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
4486                         "0295 Reset HBA Data: x%x x%x x%x\n",
4487                         phba->pport->port_state, psli->sli_flag,
4488                         phba->hba_flag);
4489 
4490         /* perform board reset */
4491         phba->fc_eventTag = 0;
4492         phba->link_events = 0;
4493         phba->pport->fc_myDID = 0;
4494         phba->pport->fc_prevDID = 0;
4495 
4496         spin_lock_irq(&phba->hbalock);
4497         psli->sli_flag &= ~(LPFC_PROCESS_LA);
4498         phba->fcf.fcf_flag = 0;
4499         spin_unlock_irq(&phba->hbalock);
4500 
4501         /* SLI4 INTF 2: if FW dump is being taken skip INIT_PORT */
4502         if (phba->hba_flag & HBA_FW_DUMP_OP) {
4503                 phba->hba_flag &= ~HBA_FW_DUMP_OP;
4504                 return rc;
4505         }
4506 
4507         /* Now physically reset the device */
4508         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
4509                         "0389 Performing PCI function reset!\n");
4510 
4511         /* Turn off parity checking and serr during the physical reset */
4512         if (pci_read_config_word(phba->pcidev, PCI_COMMAND, &cfg_value)) {
4513                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
4514                                 "3205 PCI read Config failed\n");
4515                 return -EIO;
4516         }
4517 
4518         pci_write_config_word(phba->pcidev, PCI_COMMAND, (cfg_value &
4519                               ~(PCI_COMMAND_PARITY | PCI_COMMAND_SERR)));
4520 
4521         /* Perform FCoE PCI function reset before freeing queue memory */
4522         rc = lpfc_pci_function_reset(phba);
4523 
4524         /* Restore PCI cmd register */
4525         pci_write_config_word(phba->pcidev, PCI_COMMAND, cfg_value);
4526 
4527         return rc;
4528 }
4529 
4530 /**
4531  * lpfc_sli_brdrestart_s3 - Restart a sli-3 hba
4532  * @phba: Pointer to HBA context object.
4533  *
4534  * This function is called in the SLI initialization code path to
4535  * restart the HBA. The caller is not required to hold any lock.
4536  * This function writes MBX_RESTART mailbox command to the SLIM and
4537  * resets the HBA. At the end of the function, it calls lpfc_hba_down_post
4538  * function to free any pending commands. The function enables
4539  * POST only during the first initialization. The function returns zero.
4540  * The function does not guarantee completion of MBX_RESTART mailbox
4541  * command before the return of this function.
4542  **/
4543 static int
4544 lpfc_sli_brdrestart_s3(struct lpfc_hba *phba)
4545 {
4546         MAILBOX_t *mb;
4547         struct lpfc_sli *psli;
4548         volatile uint32_t word0;
4549         void __iomem *to_slim;
4550         uint32_t hba_aer_enabled;
4551 
4552         spin_lock_irq(&phba->hbalock);
4553 
4554         /* Take PCIe device Advanced Error Reporting (AER) state */
4555         hba_aer_enabled = phba->hba_flag & HBA_AER_ENABLED;
4556 
4557         psli = &phba->sli;
4558 
4559         /* Restart HBA */
4560         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
4561                         "0337 Restart HBA Data: x%x x%x\n",
4562                         (phba->pport) ? phba->pport->port_state : 0,
4563                         psli->sli_flag);
4564 
4565         word0 = 0;
4566         mb = (MAILBOX_t *) &word0;
4567         mb->mbxCommand = MBX_RESTART;
4568         mb->mbxHc = 1;
4569 
4570         lpfc_reset_barrier(phba);
4571 
4572         to_slim = phba->MBslimaddr;
4573         writel(*(uint32_t *) mb, to_slim);
4574         readl(to_slim); /* flush */
4575 
4576         /* Only skip post after fc_ffinit is completed */
4577         if (phba->pport && phba->pport->port_state)
4578                 word0 = 1;      /* This is really setting up word1 */
4579         else
4580                 word0 = 0;      /* This is really setting up word1 */
4581         to_slim = phba->MBslimaddr + sizeof (uint32_t);
4582         writel(*(uint32_t *) mb, to_slim);
4583         readl(to_slim); /* flush */
4584 
4585         lpfc_sli_brdreset(phba);
4586         if (phba->pport)
4587                 phba->pport->stopped = 0;
4588         phba->link_state = LPFC_INIT_START;
4589         phba->hba_flag = 0;
4590         spin_unlock_irq(&phba->hbalock);
4591 
4592         memset(&psli->lnk_stat_offsets, 0, sizeof(psli->lnk_stat_offsets));
4593         psli->stats_start = ktime_get_seconds();
4594 
4595         /* Give the INITFF and Post time to settle. */
4596         mdelay(100);
4597 
4598         /* Reset HBA AER if it was enabled, note hba_flag was reset above */
4599         if (hba_aer_enabled)
4600                 pci_disable_pcie_error_reporting(phba->pcidev);
4601 
4602         lpfc_hba_down_post(phba);
4603 
4604         return 0;
4605 }
4606 
4607 /**
4608  * lpfc_sli_brdrestart_s4 - Restart the sli-4 hba
4609  * @phba: Pointer to HBA context object.
4610  *
4611  * This function is called in the SLI initialization code path to restart
4612  * a SLI4 HBA. The caller is not required to hold any lock.
4613  * At the end of the function, it calls lpfc_hba_down_post function to
4614  * free any pending commands.
4615  **/
4616 static int
4617 lpfc_sli_brdrestart_s4(struct lpfc_hba *phba)
4618 {
4619         struct lpfc_sli *psli = &phba->sli;
4620         uint32_t hba_aer_enabled;
4621         int rc;
4622 
4623         /* Restart HBA */
4624         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
4625                         "0296 Restart HBA Data: x%x x%x\n",
4626                         phba->pport->port_state, psli->sli_flag);
4627 
4628         /* Take PCIe device Advanced Error Reporting (AER) state */
4629         hba_aer_enabled = phba->hba_flag & HBA_AER_ENABLED;
4630 
4631         rc = lpfc_sli4_brdreset(phba);
4632         if (rc) {
4633                 phba->link_state = LPFC_HBA_ERROR;
4634                 goto hba_down_queue;
4635         }
4636 
4637         spin_lock_irq(&phba->hbalock);
4638         phba->pport->stopped = 0;
4639         phba->link_state = LPFC_INIT_START;
4640         phba->hba_flag = 0;
4641         spin_unlock_irq(&phba->hbalock);
4642 
4643         memset(&psli->lnk_stat_offsets, 0, sizeof(psli->lnk_stat_offsets));
4644         psli->stats_start = ktime_get_seconds();
4645 
4646         /* Reset HBA AER if it was enabled, note hba_flag was reset above */
4647         if (hba_aer_enabled)
4648                 pci_disable_pcie_error_reporting(phba->pcidev);
4649 
4650 hba_down_queue:
4651         lpfc_hba_down_post(phba);
4652         lpfc_sli4_queue_destroy(phba);
4653 
4654         return rc;
4655 }
4656 
4657 /**
4658  * lpfc_sli_brdrestart - Wrapper func for restarting hba
4659  * @phba: Pointer to HBA context object.
4660  *
4661  * This routine wraps the actual SLI3 or SLI4 hba restart routine from the
4662  * API jump table function pointer from the lpfc_hba struct.
4663 **/
4664 int
4665 lpfc_sli_brdrestart(struct lpfc_hba *phba)
4666 {
4667         return phba->lpfc_sli_brdrestart(phba);
4668 }
4669 
4670 /**
4671  * lpfc_sli_chipset_init - Wait for the restart of the HBA after a restart
4672  * @phba: Pointer to HBA context object.
4673  *
4674  * This function is called after a HBA restart to wait for successful
4675  * restart of the HBA. Successful restart of the HBA is indicated by
4676  * HS_FFRDY and HS_MBRDY bits. If the HBA fails to restart even after 15
4677  * iteration, the function will restart the HBA again. The function returns
4678  * zero if HBA successfully restarted else returns negative error code.
4679  **/
4680 int
4681 lpfc_sli_chipset_init(struct lpfc_hba *phba)
4682 {
4683         uint32_t status, i = 0;
4684 
4685         /* Read the HBA Host Status Register */
4686         if (lpfc_readl(phba->HSregaddr, &status))
4687                 return -EIO;
4688 
4689         /* Check status register to see what current state is */
4690         i = 0;
4691         while ((status & (HS_FFRDY | HS_MBRDY)) != (HS_FFRDY | HS_MBRDY)) {
4692 
4693                 /* Check every 10ms for 10 retries, then every 100ms for 90
4694                  * retries, then every 1 sec for 50 retires for a total of
4695                  * ~60 seconds before reset the board again and check every
4696                  * 1 sec for 50 retries. The up to 60 seconds before the
4697                  * board ready is required by the Falcon FIPS zeroization
4698                  * complete, and any reset the board in between shall cause
4699                  * restart of zeroization, further delay the board ready.
4700                  */
4701                 if (i++ >= 200) {
4702                         /* Adapter failed to init, timeout, status reg
4703                            <status> */
4704                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4705                                         "0436 Adapter failed to init, "
4706                                         "timeout, status reg x%x, "
4707                                         "FW Data: A8 x%x AC x%x\n", status,
4708                                         readl(phba->MBslimaddr + 0xa8),
4709                                         readl(phba->MBslimaddr + 0xac));
4710                         phba->link_state = LPFC_HBA_ERROR;
4711                         return -ETIMEDOUT;
4712                 }
4713 
4714                 /* Check to see if any errors occurred during init */
4715                 if (status & HS_FFERM) {
4716                         /* ERROR: During chipset initialization */
4717                         /* Adapter failed to init, chipset, status reg
4718                            <status> */
4719                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4720                                         "0437 Adapter failed to init, "
4721                                         "chipset, status reg x%x, "
4722                                         "FW Data: A8 x%x AC x%x\n", status,
4723                                         readl(phba->MBslimaddr + 0xa8),
4724                                         readl(phba->MBslimaddr + 0xac));
4725                         phba->link_state = LPFC_HBA_ERROR;
4726                         return -EIO;
4727                 }
4728 
4729                 if (i <= 10)
4730                         msleep(10);
4731                 else if (i <= 100)
4732                         msleep(100);
4733                 else
4734                         msleep(1000);
4735 
4736                 if (i == 150) {
4737                         /* Do post */
4738                         phba->pport->port_state = LPFC_VPORT_UNKNOWN;
4739                         lpfc_sli_brdrestart(phba);
4740                 }
4741                 /* Read the HBA Host Status Register */
4742                 if (lpfc_readl(phba->HSregaddr, &status))
4743                         return -EIO;
4744         }
4745 
4746         /* Check to see if any errors occurred during init */
4747         if (status & HS_FFERM) {
4748                 /* ERROR: During chipset initialization */
4749                 /* Adapter failed to init, chipset, status reg <status> */
4750                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4751                                 "0438 Adapter failed to init, chipset, "
4752                                 "status reg x%x, "
4753                                 "FW Data: A8 x%x AC x%x\n", status,
4754                                 readl(phba->MBslimaddr + 0xa8),
4755                                 readl(phba->MBslimaddr + 0xac));
4756                 phba->link_state = LPFC_HBA_ERROR;
4757                 return -EIO;
4758         }
4759 
4760         /* Clear all interrupt enable conditions */
4761         writel(0, phba->HCregaddr);
4762         readl(phba->HCregaddr); /* flush */
4763 
4764         /* setup host attn register */
4765         writel(0xffffffff, phba->HAregaddr);
4766         readl(phba->HAregaddr); /* flush */
4767         return 0;
4768 }
4769 
4770 /**
4771  * lpfc_sli_hbq_count - Get the number of HBQs to be configured
4772  *
4773  * This function calculates and returns the number of HBQs required to be
4774  * configured.
4775  **/
4776 int
4777 lpfc_sli_hbq_count(void)
4778 {
4779         return ARRAY_SIZE(lpfc_hbq_defs);
4780 }
4781 
4782 /**
4783  * lpfc_sli_hbq_entry_count - Calculate total number of hbq entries
4784  *
4785  * This function adds the number of hbq entries in every HBQ to get
4786  * the total number of hbq entries required for the HBA and returns
4787  * the total count.
4788  **/
4789 static int
4790 lpfc_sli_hbq_entry_count(void)
4791 {
4792         int  hbq_count = lpfc_sli_hbq_count();
4793         int  count = 0;
4794         int  i;
4795 
4796         for (i = 0; i < hbq_count; ++i)
4797                 count += lpfc_hbq_defs[i]->entry_count;
4798         return count;
4799 }
4800 
4801 /**
4802  * lpfc_sli_hbq_size - Calculate memory required for all hbq entries
4803  *
4804  * This function calculates amount of memory required for all hbq entries
4805  * to be configured and returns the total memory required.
4806  **/
4807 int
4808 lpfc_sli_hbq_size(void)
4809 {
4810         return lpfc_sli_hbq_entry_count() * sizeof(struct lpfc_hbq_entry);
4811 }
4812 
4813 /**
4814  * lpfc_sli_hbq_setup - configure and initialize HBQs
4815  * @phba: Pointer to HBA context object.
4816  *
4817  * This function is called during the SLI initialization to configure
4818  * all the HBQs and post buffers to the HBQ. The caller is not
4819  * required to hold any locks. This function will return zero if successful
4820  * else it will return negative error code.
4821  **/
4822 static int
4823 lpfc_sli_hbq_setup(struct lpfc_hba *phba)
4824 {
4825         int  hbq_count = lpfc_sli_hbq_count();
4826         LPFC_MBOXQ_t *pmb;
4827         MAILBOX_t *pmbox;
4828         uint32_t hbqno;
4829         uint32_t hbq_entry_index;
4830 
4831                                 /* Get a Mailbox buffer to setup mailbox
4832                                  * commands for HBA initialization
4833                                  */
4834         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4835 
4836         if (!pmb)
4837                 return -ENOMEM;
4838 
4839         pmbox = &pmb->u.mb;
4840 
4841         /* Initialize the struct lpfc_sli_hbq structure for each hbq */
4842         phba->link_state = LPFC_INIT_MBX_CMDS;
4843         phba->hbq_in_use = 1;
4844 
4845         hbq_entry_index = 0;
4846         for (hbqno = 0; hbqno < hbq_count; ++hbqno) {
4847                 phba->hbqs[hbqno].next_hbqPutIdx = 0;
4848                 phba->hbqs[hbqno].hbqPutIdx      = 0;
4849                 phba->hbqs[hbqno].local_hbqGetIdx   = 0;
4850                 phba->hbqs[hbqno].entry_count =
4851                         lpfc_hbq_defs[hbqno]->entry_count;
4852                 lpfc_config_hbq(phba, hbqno, lpfc_hbq_defs[hbqno],
4853                         hbq_entry_index, pmb);
4854                 hbq_entry_index += phba->hbqs[hbqno].entry_count;
4855 
4856                 if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
4857                         /* Adapter failed to init, mbxCmd <cmd> CFG_RING,
4858                            mbxStatus <status>, ring <num> */
4859 
4860                         lpfc_printf_log(phba, KERN_ERR,
4861                                         LOG_SLI | LOG_VPORT,
4862                                         "1805 Adapter failed to init. "
4863                                         "Data: x%x x%x x%x\n",
4864                                         pmbox->mbxCommand,
4865                                         pmbox->mbxStatus, hbqno);
4866 
4867                         phba->link_state = LPFC_HBA_ERROR;
4868                         mempool_free(pmb, phba->mbox_mem_pool);
4869                         return -ENXIO;
4870                 }
4871         }
4872         phba->hbq_count = hbq_count;
4873 
4874         mempool_free(pmb, phba->mbox_mem_pool);
4875 
4876         /* Initially populate or replenish the HBQs */
4877         for (hbqno = 0; hbqno < hbq_count; ++hbqno)
4878                 lpfc_sli_hbqbuf_init_hbqs(phba, hbqno);
4879         return 0;
4880 }
4881 
4882 /**
4883  * lpfc_sli4_rb_setup - Initialize and post RBs to HBA
4884  * @phba: Pointer to HBA context object.
4885  *
4886  * This function is called during the SLI initialization to configure
4887  * all the HBQs and post buffers to the HBQ. The caller is not
4888  * required to hold any locks. This function will return zero if successful
4889  * else it will return negative error code.
4890  **/
4891 static int
4892 lpfc_sli4_rb_setup(struct lpfc_hba *phba)
4893 {
4894         phba->hbq_in_use = 1;
4895         phba->hbqs[LPFC_ELS_HBQ].entry_count =
4896                 lpfc_hbq_defs[LPFC_ELS_HBQ]->entry_count;
4897         phba->hbq_count = 1;
4898         lpfc_sli_hbqbuf_init_hbqs(phba, LPFC_ELS_HBQ);
4899         /* Initially populate or replenish the HBQs */
4900         return 0;
4901 }
4902 
4903 /**
4904  * lpfc_sli_config_port - Issue config port mailbox command
4905  * @phba: Pointer to HBA context object.
4906  * @sli_mode: sli mode - 2/3
4907  *
4908  * This function is called by the sli initialization code path
4909  * to issue config_port mailbox command. This function restarts the
4910  * HBA firmware and issues a config_port mailbox command to configure
4911  * the SLI interface in the sli mode specified by sli_mode
4912  * variable. The caller is not required to hold any locks.
4913  * The function returns 0 if successful, else returns negative error
4914  * code.
4915  **/
4916 int
4917 lpfc_sli_config_port(struct lpfc_hba *phba, int sli_mode)
4918 {
4919         LPFC_MBOXQ_t *pmb;
4920         uint32_t resetcount = 0, rc = 0, done = 0;
4921 
4922         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4923         if (!pmb) {
4924                 phba->link_state = LPFC_HBA_ERROR;
4925                 return -ENOMEM;
4926         }
4927 
4928         phba->sli_rev = sli_mode;
4929         while (resetcount < 2 && !done) {
4930                 spin_lock_irq(&phba->hbalock);
4931                 phba->sli.sli_flag |= LPFC_SLI_MBOX_ACTIVE;
4932                 spin_unlock_irq(&phba->hbalock);
4933                 phba->pport->port_state = LPFC_VPORT_UNKNOWN;
4934                 lpfc_sli_brdrestart(phba);
4935                 rc = lpfc_sli_chipset_init(phba);
4936                 if (rc)
4937                         break;
4938 
4939                 spin_lock_irq(&phba->hbalock);
4940                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
4941                 spin_unlock_irq(&phba->hbalock);
4942                 resetcount++;
4943 
4944                 /* Call pre CONFIG_PORT mailbox command initialization.  A
4945                  * value of 0 means the call was successful.  Any other
4946                  * nonzero value is a failure, but if ERESTART is returned,
4947                  * the driver may reset the HBA and try again.
4948                  */
4949                 rc = lpfc_config_port_prep(phba);
4950                 if (rc == -ERESTART) {
4951                         phba->link_state = LPFC_LINK_UNKNOWN;
4952                         continue;
4953                 } else if (rc)
4954                         break;
4955 
4956                 phba->link_state = LPFC_INIT_MBX_CMDS;
4957                 lpfc_config_port(phba, pmb);
4958                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
4959                 phba->sli3_options &= ~(LPFC_SLI3_NPIV_ENABLED |
4960                                         LPFC_SLI3_HBQ_ENABLED |
4961                                         LPFC_SLI3_CRP_ENABLED |
4962                                         LPFC_SLI3_DSS_ENABLED);
4963                 if (rc != MBX_SUCCESS) {
4964                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4965                                 "0442 Adapter failed to init, mbxCmd x%x "
4966                                 "CONFIG_PORT, mbxStatus x%x Data: x%x\n",
4967                                 pmb->u.mb.mbxCommand, pmb->u.mb.mbxStatus, 0);
4968                         spin_lock_irq(&phba->hbalock);
4969                         phba->sli.sli_flag &= ~LPFC_SLI_ACTIVE;
4970                         spin_unlock_irq(&phba->hbalock);
4971                         rc = -ENXIO;
4972                 } else {
4973                         /* Allow asynchronous mailbox command to go through */
4974                         spin_lock_irq(&phba->hbalock);
4975                         phba->sli.sli_flag &= ~LPFC_SLI_ASYNC_MBX_BLK;
4976                         spin_unlock_irq(&phba->hbalock);
4977                         done = 1;
4978 
4979                         if ((pmb->u.mb.un.varCfgPort.casabt == 1) &&
4980                             (pmb->u.mb.un.varCfgPort.gasabt == 0))
4981                                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4982                                         "3110 Port did not grant ASABT\n");
4983                 }
4984         }
4985         if (!done) {
4986                 rc = -EINVAL;
4987                 goto do_prep_failed;
4988         }
4989         if (pmb->u.mb.un.varCfgPort.sli_mode == 3) {
4990                 if (!pmb->u.mb.un.varCfgPort.cMA) {
4991                         rc = -ENXIO;
4992                         goto do_prep_failed;
4993                 }
4994                 if (phba->max_vpi && pmb->u.mb.un.varCfgPort.gmv) {
4995                         phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
4996                         phba->max_vpi = pmb->u.mb.un.varCfgPort.max_vpi;
4997                         phba->max_vports = (phba->max_vpi > phba->max_vports) ?
4998                                 phba->max_vpi : phba->max_vports;
4999 
5000                 } else
5001                         phba->max_vpi = 0;
5002                 phba->fips_level = 0;
5003                 phba->fips_spec_rev = 0;
5004                 if (pmb->u.mb.un.varCfgPort.gdss) {
5005                         phba->sli3_options |= LPFC_SLI3_DSS_ENABLED;
5006                         phba->fips_level = pmb->u.mb.un.varCfgPort.fips_level;
5007                         phba->fips_spec_rev = pmb->u.mb.un.varCfgPort.fips_rev;
5008                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
5009                                         "2850 Security Crypto Active. FIPS x%d "
5010                                         "(Spec Rev: x%d)",
5011                                         phba->fips_level, phba->fips_spec_rev);
5012                 }
5013                 if (pmb->u.mb.un.varCfgPort.sec_err) {
5014                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5015                                         "2856 Config Port Security Crypto "
5016                                         "Error: x%x ",
5017                                         pmb->u.mb.un.varCfgPort.sec_err);
5018                 }
5019                 if (pmb->u.mb.un.varCfgPort.gerbm)
5020                         phba->sli3_options |= LPFC_SLI3_HBQ_ENABLED;
5021                 if (pmb->u.mb.un.varCfgPort.gcrp)
5022                         phba->sli3_options |= LPFC_SLI3_CRP_ENABLED;
5023 
5024                 phba->hbq_get = phba->mbox->us.s3_pgp.hbq_get;
5025                 phba->port_gp = phba->mbox->us.s3_pgp.port;
5026 
5027                 if (phba->sli3_options & LPFC_SLI3_BG_ENABLED) {
5028                         if (pmb->u.mb.un.varCfgPort.gbg == 0) {
5029                                 phba->cfg_enable_bg = 0;
5030                                 phba->sli3_options &= ~LPFC_SLI3_BG_ENABLED;
5031                                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5032                                                 "0443 Adapter did not grant "
5033                                                 "BlockGuard\n");
5034                         }
5035                 }
5036         } else {
5037                 phba->hbq_get = NULL;
5038                 phba->port_gp = phba->mbox->us.s2.port;
5039                 phba->max_vpi = 0;
5040         }
5041 do_prep_failed:
5042         mempool_free(pmb, phba->mbox_mem_pool);
5043         return rc;
5044 }
5045 
5046 
5047 /**
5048  * lpfc_sli_hba_setup - SLI initialization function
5049  * @phba: Pointer to HBA context object.
5050  *
5051  * This function is the main SLI initialization function. This function
5052  * is called by the HBA initialization code, HBA reset code and HBA
5053  * error attention handler code. Caller is not required to hold any
5054  * locks. This function issues config_port mailbox command to configure
5055  * the SLI, setup iocb rings and HBQ rings. In the end the function
5056  * calls the config_port_post function to issue init_link mailbox
5057  * command and to start the discovery. The function will return zero
5058  * if successful, else it will return negative error code.
5059  **/
5060 int
5061 lpfc_sli_hba_setup(struct lpfc_hba *phba)
5062 {
5063         uint32_t rc;
5064         int  mode = 3, i;
5065         int longs;
5066 
5067         switch (phba->cfg_sli_mode) {
5068         case 2:
5069                 if (phba->cfg_enable_npiv) {
5070                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_VPORT,
5071                                 "1824 NPIV enabled: Override sli_mode "
5072                                 "parameter (%d) to auto (0).\n",
5073                                 phba->cfg_sli_mode);
5074                         break;
5075                 }
5076                 mode = 2;
5077                 break;
5078         case 0:
5079         case 3:
5080                 break;
5081         default:
5082                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_VPORT,
5083                                 "1819 Unrecognized sli_mode parameter: %d.\n",
5084                                 phba->cfg_sli_mode);
5085 
5086                 break;
5087         }
5088         phba->fcp_embed_io = 0; /* SLI4 FC support only */
5089 
5090         rc = lpfc_sli_config_port(phba, mode);
5091 
5092         if (rc && phba->cfg_sli_mode == 3)
5093                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_VPORT,
5094                                 "1820 Unable to select SLI-3.  "
5095                                 "Not supported by adapter.\n");
5096         if (rc && mode != 2)
5097                 rc = lpfc_sli_config_port(phba, 2);
5098         else if (rc && mode == 2)
5099                 rc = lpfc_sli_config_port(phba, 3);
5100         if (rc)
5101                 goto lpfc_sli_hba_setup_error;
5102 
5103         /* Enable PCIe device Advanced Error Reporting (AER) if configured */
5104         if (phba->cfg_aer_support == 1 && !(phba->hba_flag & HBA_AER_ENABLED)) {
5105                 rc = pci_enable_pcie_error_reporting(phba->pcidev);
5106                 if (!rc) {
5107                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
5108                                         "2709 This device supports "
5109                                         "Advanced Error Reporting (AER)\n");
5110                         spin_lock_irq(&phba->hbalock);
5111                         phba->hba_flag |= HBA_AER_ENABLED;
5112                         spin_unlock_irq(&phba->hbalock);
5113                 } else {
5114                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
5115                                         "2708 This device does not support "
5116                                         "Advanced Error Reporting (AER): %d\n",
5117                                         rc);
5118                         phba->cfg_aer_support = 0;
5119                 }
5120         }
5121 
5122         if (phba->sli_rev == 3) {
5123                 phba->iocb_cmd_size = SLI3_IOCB_CMD_SIZE;
5124                 phba->iocb_rsp_size = SLI3_IOCB_RSP_SIZE;
5125         } else {
5126                 phba->iocb_cmd_size = SLI2_IOCB_CMD_SIZE;
5127                 phba->iocb_rsp_size = SLI2_IOCB_RSP_SIZE;
5128                 phba->sli3_options = 0;
5129         }
5130 
5131         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
5132                         "0444 Firmware in SLI %x mode. Max_vpi %d\n",
5133                         phba->sli_rev, phba->max_vpi);
5134         rc = lpfc_sli_ring_map(phba);
5135 
5136         if (rc)
5137                 goto lpfc_sli_hba_setup_error;
5138 
5139         /* Initialize VPIs. */
5140         if (phba->sli_rev == LPFC_SLI_REV3) {
5141                 /*
5142                  * The VPI bitmask and physical ID array are allocated
5143                  * and initialized once only - at driver load.  A port
5144                  * reset doesn't need to reinitialize this memory.
5145                  */
5146                 if ((phba->vpi_bmask == NULL) && (phba->vpi_ids == NULL)) {
5147                         longs = (phba->max_vpi + BITS_PER_LONG) / BITS_PER_LONG;
5148                         phba->vpi_bmask = kcalloc(longs,
5149                                                   sizeof(unsigned long),
5150                                                   GFP_KERNEL);
5151                         if (!phba->vpi_bmask) {
5152                                 rc = -ENOMEM;
5153                                 goto lpfc_sli_hba_setup_error;
5154                         }
5155 
5156                         phba->vpi_ids = kcalloc(phba->max_vpi + 1,
5157                                                 sizeof(uint16_t),
5158                                                 GFP_KERNEL);
5159                         if (!phba->vpi_ids) {
5160                                 kfree(phba->vpi_bmask);
5161                                 rc = -ENOMEM;
5162                                 goto lpfc_sli_hba_setup_error;
5163                         }
5164                         for (i = 0; i < phba->max_vpi; i++)
5165                                 phba->vpi_ids[i] = i;
5166                 }
5167         }
5168 
5169         /* Init HBQs */
5170         if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
5171                 rc = lpfc_sli_hbq_setup(phba);
5172                 if (rc)
5173                         goto lpfc_sli_hba_setup_error;
5174         }
5175         spin_lock_irq(&phba->hbalock);
5176         phba->sli.sli_flag |= LPFC_PROCESS_LA;
5177         spin_unlock_irq(&phba->hbalock);
5178 
5179         rc = lpfc_config_port_post(phba);
5180         if (rc)
5181                 goto lpfc_sli_hba_setup_error;
5182 
5183         return rc;
5184 
5185 lpfc_sli_hba_setup_error:
5186         phba->link_state = LPFC_HBA_ERROR;
5187         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5188                         "0445 Firmware initialization failed\n");
5189         return rc;
5190 }
5191 
5192 /**
5193  * lpfc_sli4_read_fcoe_params - Read fcoe params from conf region
5194  * @phba: Pointer to HBA context object.
5195  * @mboxq: mailbox pointer.
5196  * This function issue a dump mailbox command to read config region
5197  * 23 and parse the records in the region and populate driver
5198  * data structure.
5199  **/
5200 static int
5201 lpfc_sli4_read_fcoe_params(struct lpfc_hba *phba)
5202 {
5203         LPFC_MBOXQ_t *mboxq;
5204         struct lpfc_dmabuf *mp;
5205         struct lpfc_mqe *mqe;
5206         uint32_t data_length;
5207         int rc;
5208 
5209         /* Program the default value of vlan_id and fc_map */
5210         phba->valid_vlan = 0;
5211         phba->fc_map[0] = LPFC_FCOE_FCF_MAP0;
5212         phba->fc_map[1] = LPFC_FCOE_FCF_MAP1;
5213         phba->fc_map[2] = LPFC_FCOE_FCF_MAP2;
5214 
5215         mboxq = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5216         if (!mboxq)
5217                 return -ENOMEM;
5218 
5219         mqe = &mboxq->u.mqe;
5220         if (lpfc_sli4_dump_cfg_rg23(phba, mboxq)) {
5221                 rc = -ENOMEM;
5222                 goto out_free_mboxq;
5223         }
5224 
5225         mp = (struct lpfc_dmabuf *)mboxq->ctx_buf;
5226         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
5227 
5228         lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
5229                         "(%d):2571 Mailbox cmd x%x Status x%x "
5230                         "Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x "
5231                         "x%x x%x x%x x%x x%x x%x x%x x%x x%x "
5232                         "CQ: x%x x%x x%x x%x\n",
5233                         mboxq->vport ? mboxq->vport->vpi : 0,
5234                         bf_get(lpfc_mqe_command, mqe),
5235                         bf_get(lpfc_mqe_status, mqe),
5236                         mqe->un.mb_words[0], mqe->un.mb_words[1],
5237                         mqe->un.mb_words[2], mqe->un.mb_words[3],
5238                         mqe->un.mb_words[4], mqe->un.mb_words[5],
5239                         mqe->un.mb_words[6], mqe->un.mb_words[7],
5240                         mqe->un.mb_words[8], mqe->un.mb_words[9],
5241                         mqe->un.mb_words[10], mqe->un.mb_words[11],
5242                         mqe->un.mb_words[12], mqe->un.mb_words[13],
5243                         mqe->un.mb_words[14], mqe->un.mb_words[15],
5244                         mqe->un.mb_words[16], mqe->un.mb_words[50],
5245                         mboxq->mcqe.word0,
5246                         mboxq->mcqe.mcqe_tag0,  mboxq->mcqe.mcqe_tag1,
5247                         mboxq->mcqe.trailer);
5248 
5249         if (rc) {
5250                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
5251                 kfree(mp);
5252                 rc = -EIO;
5253                 goto out_free_mboxq;
5254         }
5255         data_length = mqe->un.mb_words[5];
5256         if (data_length > DMP_RGN23_SIZE) {
5257                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
5258                 kfree(mp);
5259                 rc = -EIO;
5260                 goto out_free_mboxq;
5261         }
5262 
5263         lpfc_parse_fcoe_conf(phba, mp->virt, data_length);
5264         lpfc_mbuf_free(phba, mp->virt, mp->phys);
5265         kfree(mp);
5266         rc = 0;
5267 
5268 out_free_mboxq:
5269         mempool_free(mboxq, phba->mbox_mem_pool);
5270         return rc;
5271 }
5272 
5273 /**
5274  * lpfc_sli4_read_rev - Issue READ_REV and collect vpd data
5275  * @phba: pointer to lpfc hba data structure.
5276  * @mboxq: pointer to the LPFC_MBOXQ_t structure.
5277  * @vpd: pointer to the memory to hold resulting port vpd data.
5278  * @vpd_size: On input, the number of bytes allocated to @vpd.
5279  *            On output, the number of data bytes in @vpd.
5280  *
5281  * This routine executes a READ_REV SLI4 mailbox command.  In
5282  * addition, this routine gets the port vpd data.
5283  *
5284  * Return codes
5285  *      0 - successful
5286  *      -ENOMEM - could not allocated memory.
5287  **/
5288 static int
5289 lpfc_sli4_read_rev(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
5290                     uint8_t *vpd, uint32_t *vpd_size)
5291 {
5292         int rc = 0;
5293         uint32_t dma_size;
5294         struct lpfc_dmabuf *dmabuf;
5295         struct lpfc_mqe *mqe;
5296 
5297         dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
5298         if (!dmabuf)
5299                 return -ENOMEM;
5300 
5301         /*
5302          * Get a DMA buffer for the vpd data resulting from the READ_REV
5303          * mailbox command.
5304          */
5305         dma_size = *vpd_size;
5306         dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev, dma_size,
5307                                           &dmabuf->phys, GFP_KERNEL);
5308         if (!dmabuf->virt) {
5309                 kfree(dmabuf);
5310                 return -ENOMEM;
5311         }
5312 
5313         /*
5314          * The SLI4 implementation of READ_REV conflicts at word1,
5315          * bits 31:16 and SLI4 adds vpd functionality not present
5316          * in SLI3.  This code corrects the conflicts.
5317          */
5318         lpfc_read_rev(phba, mboxq);
5319         mqe = &mboxq->u.mqe;
5320         mqe->un.read_rev.vpd_paddr_high = putPaddrHigh(dmabuf->phys);
5321         mqe->un.read_rev.vpd_paddr_low = putPaddrLow(dmabuf->phys);
5322         mqe->un.read_rev.word1 &= 0x0000FFFF;
5323         bf_set(lpfc_mbx_rd_rev_vpd, &mqe->un.read_rev, 1);
5324         bf_set(lpfc_mbx_rd_rev_avail_len, &mqe->un.read_rev, dma_size);
5325 
5326         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
5327         if (rc) {
5328                 dma_free_coherent(&phba->pcidev->dev, dma_size,
5329                                   dmabuf->virt, dmabuf->phys);
5330                 kfree(dmabuf);
5331                 return -EIO;
5332         }
5333 
5334         /*
5335          * The available vpd length cannot be bigger than the
5336          * DMA buffer passed to the port.  Catch the less than
5337          * case and update the caller's size.
5338          */
5339         if (mqe->un.read_rev.avail_vpd_len < *vpd_size)
5340                 *vpd_size = mqe->un.read_rev.avail_vpd_len;
5341 
5342         memcpy(vpd, dmabuf->virt, *vpd_size);
5343 
5344         dma_free_coherent(&phba->pcidev->dev, dma_size,
5345                           dmabuf->virt, dmabuf->phys);
5346         kfree(dmabuf);
5347         return 0;
5348 }
5349 
5350 /**
5351  * lpfc_sli4_get_ctl_attr - Retrieve SLI4 device controller attributes
5352  * @phba: pointer to lpfc hba data structure.
5353  *
5354  * This routine retrieves SLI4 device physical port name this PCI function
5355  * is attached to.
5356  *
5357  * Return codes
5358  *      0 - successful
5359  *      otherwise - failed to retrieve controller attributes
5360  **/
5361 static int
5362 lpfc_sli4_get_ctl_attr(struct lpfc_hba *phba)
5363 {
5364         LPFC_MBOXQ_t *mboxq;
5365         struct lpfc_mbx_get_cntl_attributes *mbx_cntl_attr;
5366         struct lpfc_controller_attribute *cntl_attr;
5367         void *virtaddr = NULL;
5368         uint32_t alloclen, reqlen;
5369         uint32_t shdr_status, shdr_add_status;
5370         union lpfc_sli4_cfg_shdr *shdr;
5371         int rc;
5372 
5373         mboxq = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5374         if (!mboxq)
5375                 return -ENOMEM;
5376 
5377         /* Send COMMON_GET_CNTL_ATTRIBUTES mbox cmd */
5378         reqlen = sizeof(struct lpfc_mbx_get_cntl_attributes);
5379         alloclen = lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
5380                         LPFC_MBOX_OPCODE_GET_CNTL_ATTRIBUTES, reqlen,
5381                         LPFC_SLI4_MBX_NEMBED);
5382 
5383         if (alloclen < reqlen) {
5384                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5385                                 "3084 Allocated DMA memory size (%d) is "
5386                                 "less than the requested DMA memory size "
5387                                 "(%d)\n", alloclen, reqlen);
5388                 rc = -ENOMEM;
5389                 goto out_free_mboxq;
5390         }
5391         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
5392         virtaddr = mboxq->sge_array->addr[0];
5393         mbx_cntl_attr = (struct lpfc_mbx_get_cntl_attributes *)virtaddr;
5394         shdr = &mbx_cntl_attr->cfg_shdr;
5395         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
5396         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
5397         if (shdr_status || shdr_add_status || rc) {
5398                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
5399                                 "3085 Mailbox x%x (x%x/x%x) failed, "
5400                                 "rc:x%x, status:x%x, add_status:x%x\n",
5401                                 bf_get(lpfc_mqe_command, &mboxq->u.mqe),
5402                                 lpfc_sli_config_mbox_subsys_get(phba, mboxq),
5403                                 lpfc_sli_config_mbox_opcode_get(phba, mboxq),
5404                                 rc, shdr_status, shdr_add_status);
5405                 rc = -ENXIO;
5406                 goto out_free_mboxq;
5407         }
5408 
5409         cntl_attr = &mbx_cntl_attr->cntl_attr;
5410         phba->sli4_hba.lnk_info.lnk_dv = LPFC_LNK_DAT_VAL;
5411         phba->sli4_hba.lnk_info.lnk_tp =
5412                 bf_get(lpfc_cntl_attr_lnk_type, cntl_attr);
5413         phba->sli4_hba.lnk_info.lnk_no =
5414                 bf_get(lpfc_cntl_attr_lnk_numb, cntl_attr);
5415 
5416         memset(phba->BIOSVersion, 0, sizeof(phba->BIOSVersion));
5417         strlcat(phba->BIOSVersion, (char *)cntl_attr->bios_ver_str,
5418                 sizeof(phba->BIOSVersion));
5419 
5420         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
5421                         "3086 lnk_type:%d, lnk_numb:%d, bios_ver:%s\n",
5422                         phba->sli4_hba.lnk_info.lnk_tp,
5423                         phba->sli4_hba.lnk_info.lnk_no,
5424                         phba->BIOSVersion);
5425 out_free_mboxq:
5426         if (rc != MBX_TIMEOUT) {
5427                 if (bf_get(lpfc_mqe_command, &mboxq->u.mqe) == MBX_SLI4_CONFIG)
5428                         lpfc_sli4_mbox_cmd_free(phba, mboxq);
5429                 else
5430                         mempool_free(mboxq, phba->mbox_mem_pool);
5431         }
5432         return rc;
5433 }
5434 
5435 /**
5436  * lpfc_sli4_retrieve_pport_name - Retrieve SLI4 device physical port name
5437  * @phba: pointer to lpfc hba data structure.
5438  *
5439  * This routine retrieves SLI4 device physical port name this PCI function
5440  * is attached to.
5441  *
5442  * Return codes
5443  *      0 - successful
5444  *      otherwise - failed to retrieve physical port name
5445  **/
5446 static int
5447 lpfc_sli4_retrieve_pport_name(struct lpfc_hba *phba)
5448 {
5449         LPFC_MBOXQ_t *mboxq;
5450         struct lpfc_mbx_get_port_name *get_port_name;
5451         uint32_t shdr_status, shdr_add_status;
5452         union lpfc_sli4_cfg_shdr *shdr;
5453         char cport_name = 0;
5454         int rc;
5455 
5456         /* We assume nothing at this point */
5457         phba->sli4_hba.lnk_info.lnk_dv = LPFC_LNK_DAT_INVAL;
5458         phba->sli4_hba.pport_name_sta = LPFC_SLI4_PPNAME_NON;
5459 
5460         mboxq = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5461         if (!mboxq)
5462                 return -ENOMEM;
5463         /* obtain link type and link number via READ_CONFIG */
5464         phba->sli4_hba.lnk_info.lnk_dv = LPFC_LNK_DAT_INVAL;
5465         lpfc_sli4_read_config(phba);
5466         if (phba->sli4_hba.lnk_info.lnk_dv == LPFC_LNK_DAT_VAL)
5467                 goto retrieve_ppname;
5468 
5469         /* obtain link type and link number via COMMON_GET_CNTL_ATTRIBUTES */
5470         rc = lpfc_sli4_get_ctl_attr(phba);
5471         if (rc)
5472                 goto out_free_mboxq;
5473 
5474 retrieve_ppname:
5475         lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
5476                 LPFC_MBOX_OPCODE_GET_PORT_NAME,
5477                 sizeof(struct lpfc_mbx_get_port_name) -
5478                 sizeof(struct lpfc_sli4_cfg_mhdr),
5479                 LPFC_SLI4_MBX_EMBED);
5480         get_port_name = &mboxq->u.mqe.un.get_port_name;
5481         shdr = (union lpfc_sli4_cfg_shdr *)&get_port_name->header.cfg_shdr;
5482         bf_set(lpfc_mbox_hdr_version, &shdr->request, LPFC_OPCODE_VERSION_1);
5483         bf_set(lpfc_mbx_get_port_name_lnk_type, &get_port_name->u.request,
5484                 phba->sli4_hba.lnk_info.lnk_tp);
5485         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
5486         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
5487         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
5488         if (shdr_status || shdr_add_status || rc) {
5489                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
5490                                 "3087 Mailbox x%x (x%x/x%x) failed: "
5491                                 "rc:x%x, status:x%x, add_status:x%x\n",
5492                                 bf_get(lpfc_mqe_command, &mboxq->u.mqe),
5493                                 lpfc_sli_config_mbox_subsys_get(phba, mboxq),
5494                                 lpfc_sli_config_mbox_opcode_get(phba, mboxq),
5495                                 rc, shdr_status, shdr_add_status);
5496                 rc = -ENXIO;
5497                 goto out_free_mboxq;
5498         }
5499         switch (phba->sli4_hba.lnk_info.lnk_no) {
5500         case LPFC_LINK_NUMBER_0:
5501                 cport_name = bf_get(lpfc_mbx_get_port_name_name0,
5502                                 &get_port_name->u.response);
5503                 phba->sli4_hba.pport_name_sta = LPFC_SLI4_PPNAME_GET;
5504                 break;
5505         case LPFC_LINK_NUMBER_1:
5506                 cport_name = bf_get(lpfc_mbx_get_port_name_name1,
5507                                 &get_port_name->u.response);
5508                 phba->sli4_hba.pport_name_sta = LPFC_SLI4_PPNAME_GET;
5509                 break;
5510         case LPFC_LINK_NUMBER_2:
5511                 cport_name = bf_get(lpfc_mbx_get_port_name_name2,
5512                                 &get_port_name->u.response);
5513                 phba->sli4_hba.pport_name_sta = LPFC_SLI4_PPNAME_GET;
5514                 break;
5515         case LPFC_LINK_NUMBER_3:
5516                 cport_name = bf_get(lpfc_mbx_get_port_name_name3,
5517                                 &get_port_name->u.response);
5518                 phba->sli4_hba.pport_name_sta = LPFC_SLI4_PPNAME_GET;
5519                 break;
5520         default:
5521                 break;
5522         }
5523 
5524         if (phba->sli4_hba.pport_name_sta == LPFC_SLI4_PPNAME_GET) {
5525                 phba->Port[0] = cport_name;
5526                 phba->Port[1] = '\0';
5527                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
5528                                 "3091 SLI get port name: %s\n", phba->Port);
5529         }
5530 
5531 out_free_mboxq:
5532         if (rc != MBX_TIMEOUT) {
5533                 if (bf_get(lpfc_mqe_command, &mboxq->u.mqe) == MBX_SLI4_CONFIG)
5534                         lpfc_sli4_mbox_cmd_free(phba, mboxq);
5535                 else
5536                         mempool_free(mboxq, phba->mbox_mem_pool);
5537         }
5538         return rc;
5539 }
5540 
5541 /**
5542  * lpfc_sli4_arm_cqeq_intr - Arm sli-4 device completion and event queues
5543  * @phba: pointer to lpfc hba data structure.
5544  *
5545  * This routine is called to explicitly arm the SLI4 device's completion and
5546  * event queues
5547  **/
5548 static void
5549 lpfc_sli4_arm_cqeq_intr(struct lpfc_hba *phba)
5550 {
5551         int qidx;
5552         struct lpfc_sli4_hba *sli4_hba = &phba->sli4_hba;
5553         struct lpfc_sli4_hdw_queue *qp;
5554         struct lpfc_queue *eq;
5555 
5556         sli4_hba->sli4_write_cq_db(phba, sli4_hba->mbx_cq, 0, LPFC_QUEUE_REARM);
5557         sli4_hba->sli4_write_cq_db(phba, sli4_hba->els_cq, 0, LPFC_QUEUE_REARM);
5558         if (sli4_hba->nvmels_cq)
5559                 sli4_hba->sli4_write_cq_db(phba, sli4_hba->nvmels_cq, 0,
5560                                            LPFC_QUEUE_REARM);
5561 
5562         if (sli4_hba->hdwq) {
5563                 /* Loop thru all Hardware Queues */
5564                 for (qidx = 0; qidx < phba->cfg_hdw_queue; qidx++) {
5565                         qp = &sli4_hba->hdwq[qidx];
5566                         /* ARM the corresponding CQ */
5567                         sli4_hba->sli4_write_cq_db(phba, qp->io_cq, 0,
5568                                                 LPFC_QUEUE_REARM);
5569                 }
5570 
5571                 /* Loop thru all IRQ vectors */
5572                 for (qidx = 0; qidx < phba->cfg_irq_chann; qidx++) {
5573                         eq = sli4_hba->hba_eq_hdl[qidx].eq;
5574                         /* ARM the corresponding EQ */
5575                         sli4_hba->sli4_write_eq_db(phba, eq,
5576                                                    0, LPFC_QUEUE_REARM);
5577                 }
5578         }
5579 
5580         if (phba->nvmet_support) {
5581                 for (qidx = 0; qidx < phba->cfg_nvmet_mrq; qidx++) {
5582                         sli4_hba->sli4_write_cq_db(phba,
5583                                 sli4_hba->nvmet_cqset[qidx], 0,
5584                                 LPFC_QUEUE_REARM);
5585                 }
5586         }
5587 }
5588 
5589 /**
5590  * lpfc_sli4_get_avail_extnt_rsrc - Get available resource extent count.
5591  * @phba: Pointer to HBA context object.
5592  * @type: The resource extent type.
5593  * @extnt_count: buffer to hold port available extent count.
5594  * @extnt_size: buffer to hold element count per extent.
5595  *
5596  * This function calls the port and retrievs the number of available
5597  * extents and their size for a particular extent type.
5598  *
5599  * Returns: 0 if successful.  Nonzero otherwise.
5600  **/
5601 int
5602 lpfc_sli4_get_avail_extnt_rsrc(struct lpfc_hba *phba, uint16_t type,
5603                                uint16_t *extnt_count, uint16_t *extnt_size)
5604 {
5605         int rc = 0;
5606         uint32_t length;
5607         uint32_t mbox_tmo;
5608         struct lpfc_mbx_get_rsrc_extent_info *rsrc_info;
5609         LPFC_MBOXQ_t *mbox;
5610 
5611         mbox = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5612         if (!mbox)
5613                 return -ENOMEM;
5614 
5615         /* Find out how many extents are available for this resource type */
5616         length = (sizeof(struct lpfc_mbx_get_rsrc_extent_info) -
5617                   sizeof(struct lpfc_sli4_cfg_mhdr));
5618         lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
5619                          LPFC_MBOX_OPCODE_GET_RSRC_EXTENT_INFO,
5620                          length, LPFC_SLI4_MBX_EMBED);
5621 
5622         /* Send an extents count of 0 - the GET doesn't use it. */
5623         rc = lpfc_sli4_mbox_rsrc_extent(phba, mbox, 0, type,
5624                                         LPFC_SLI4_MBX_EMBED);
5625         if (unlikely(rc)) {
5626                 rc = -EIO;
5627                 goto err_exit;
5628         }
5629 
5630         if (!phba->sli4_hba.intr_enable)
5631                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
5632         else {
5633                 mbox_tmo = lpfc_mbox_tmo_val(phba, mbox);
5634                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo);
5635         }
5636         if (unlikely(rc)) {
5637                 rc = -EIO;
5638                 goto err_exit;
5639         }
5640 
5641         rsrc_info = &mbox->u.mqe.un.rsrc_extent_info;
5642         if (bf_get(lpfc_mbox_hdr_status,
5643                    &rsrc_info->header.cfg_shdr.response)) {
5644                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_INIT,
5645                                 "2930 Failed to get resource extents "
5646                                 "Status 0x%x Add'l Status 0x%x\n",
5647                                 bf_get(lpfc_mbox_hdr_status,
5648                                        &rsrc_info->header.cfg_shdr.response),
5649                                 bf_get(lpfc_mbox_hdr_add_status,
5650                                        &rsrc_info->header.cfg_shdr.response));
5651                 rc = -EIO;
5652                 goto err_exit;
5653         }
5654 
5655         *extnt_count = bf_get(lpfc_mbx_get_rsrc_extent_info_cnt,
5656                               &rsrc_info->u.rsp);
5657         *extnt_size = bf_get(lpfc_mbx_get_rsrc_extent_info_size,
5658                              &rsrc_info->u.rsp);
5659 
5660         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
5661                         "3162 Retrieved extents type-%d from port: count:%d, "
5662                         "size:%d\n", type, *extnt_count, *extnt_size);
5663 
5664 err_exit:
5665         mempool_free(mbox, phba->mbox_mem_pool);
5666         return rc;
5667 }
5668 
5669 /**
5670  * lpfc_sli4_chk_avail_extnt_rsrc - Check for available SLI4 resource extents.
5671  * @phba: Pointer to HBA context object.
5672  * @type: The extent type to check.
5673  *
5674  * This function reads the current available extents from the port and checks
5675  * if the extent count or extent size has changed since the last access.
5676  * Callers use this routine post port reset to understand if there is a
5677  * extent reprovisioning requirement.
5678  *
5679  * Returns:
5680  *   -Error: error indicates problem.
5681  *   1: Extent count or size has changed.
5682  *   0: No changes.
5683  **/
5684 static int
5685 lpfc_sli4_chk_avail_extnt_rsrc(struct lpfc_hba *phba, uint16_t type)
5686 {
5687         uint16_t curr_ext_cnt, rsrc_ext_cnt;
5688         uint16_t size_diff, rsrc_ext_size;
5689         int rc = 0;
5690         struct lpfc_rsrc_blks *rsrc_entry;
5691         struct list_head *rsrc_blk_list = NULL;
5692 
5693         size_diff = 0;
5694         curr_ext_cnt = 0;
5695         rc = lpfc_sli4_get_avail_extnt_rsrc(phba, type,
5696                                             &rsrc_ext_cnt,
5697                                             &rsrc_ext_size);
5698         if (unlikely(rc))
5699                 return -EIO;
5700 
5701         switch (type) {
5702         case LPFC_RSC_TYPE_FCOE_RPI:
5703                 rsrc_blk_list = &phba->sli4_hba.lpfc_rpi_blk_list;
5704                 break;
5705         case LPFC_RSC_TYPE_FCOE_VPI:
5706                 rsrc_blk_list = &phba->lpfc_vpi_blk_list;
5707                 break;
5708         case LPFC_RSC_TYPE_FCOE_XRI:
5709                 rsrc_blk_list = &phba->sli4_hba.lpfc_xri_blk_list;
5710                 break;
5711         case LPFC_RSC_TYPE_FCOE_VFI:
5712                 rsrc_blk_list = &phba->sli4_hba.lpfc_vfi_blk_list;
5713                 break;
5714         default:
5715                 break;
5716         }
5717 
5718         list_for_each_entry(rsrc_entry, rsrc_blk_list, list) {
5719                 curr_ext_cnt++;
5720                 if (rsrc_entry->rsrc_size != rsrc_ext_size)
5721                         size_diff++;
5722         }
5723 
5724         if (curr_ext_cnt != rsrc_ext_cnt || size_diff != 0)
5725                 rc = 1;
5726 
5727         return rc;
5728 }
5729 
5730 /**
5731  * lpfc_sli4_cfg_post_extnts -
5732  * @phba: Pointer to HBA context object.
5733  * @extnt_cnt - number of available extents.
5734  * @type - the extent type (rpi, xri, vfi, vpi).
5735  * @emb - buffer to hold either MBX_EMBED or MBX_NEMBED operation.
5736  * @mbox - pointer to the caller's allocated mailbox structure.
5737  *
5738  * This function executes the extents allocation request.  It also
5739  * takes care of the amount of memory needed to allocate or get the
5740  * allocated extents. It is the caller's responsibility to evaluate
5741  * the response.
5742  *
5743  * Returns:
5744  *   -Error:  Error value describes the condition found.
5745  *   0: if successful
5746  **/
5747 static int
5748 lpfc_sli4_cfg_post_extnts(struct lpfc_hba *phba, uint16_t extnt_cnt,
5749                           uint16_t type, bool *emb, LPFC_MBOXQ_t *mbox)
5750 {
5751         int rc = 0;
5752         uint32_t req_len;
5753         uint32_t emb_len;
5754         uint32_t alloc_len, mbox_tmo;
5755 
5756         /* Calculate the total requested length of the dma memory */
5757         req_len = extnt_cnt * sizeof(uint16_t);
5758 
5759         /*
5760          * Calculate the size of an embedded mailbox.  The uint32_t
5761          * accounts for extents-specific word.
5762          */
5763         emb_len = sizeof(MAILBOX_t) - sizeof(struct mbox_header) -
5764                 sizeof(uint32_t);
5765 
5766         /*
5767          * Presume the allocation and response will fit into an embedded
5768          * mailbox.  If not true, reconfigure to a non-embedded mailbox.
5769          */
5770         *emb = LPFC_SLI4_MBX_EMBED;
5771         if (req_len > emb_len) {
5772                 req_len = extnt_cnt * sizeof(uint16_t) +
5773                         sizeof(union lpfc_sli4_cfg_shdr) +
5774                         sizeof(uint32_t);
5775                 *emb = LPFC_SLI4_MBX_NEMBED;
5776         }
5777 
5778         alloc_len = lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
5779                                      LPFC_MBOX_OPCODE_ALLOC_RSRC_EXTENT,
5780                                      req_len, *emb);
5781         if (alloc_len < req_len) {
5782                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5783                         "2982 Allocated DMA memory size (x%x) is "
5784                         "less than the requested DMA memory "
5785                         "size (x%x)\n", alloc_len, req_len);
5786                 return -ENOMEM;
5787         }
5788         rc = lpfc_sli4_mbox_rsrc_extent(phba, mbox, extnt_cnt, type, *emb);
5789         if (unlikely(rc))
5790                 return -EIO;
5791 
5792         if (!phba->sli4_hba.intr_enable)
5793                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
5794         else {
5795                 mbox_tmo = lpfc_mbox_tmo_val(phba, mbox);
5796                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo);
5797         }
5798 
5799         if (unlikely(rc))
5800                 rc = -EIO;
5801         return rc;
5802 }
5803 
5804 /**
5805  * lpfc_sli4_alloc_extent - Allocate an SLI4 resource extent.
5806  * @phba: Pointer to HBA context object.
5807  * @type:  The resource extent type to allocate.
5808  *
5809  * This function allocates the number of elements for the specified
5810  * resource type.
5811  **/
5812 static int
5813 lpfc_sli4_alloc_extent(struct lpfc_hba *phba, uint16_t type)
5814 {
5815         bool emb = false;
5816         uint16_t rsrc_id_cnt, rsrc_cnt, rsrc_size;
5817         uint16_t rsrc_id, rsrc_start, j, k;
5818         uint16_t *ids;
5819         int i, rc;
5820         unsigned long longs;
5821         unsigned long *bmask;
5822         struct lpfc_rsrc_blks *rsrc_blks;
5823         LPFC_MBOXQ_t *mbox;
5824         uint32_t length;
5825         struct lpfc_id_range *id_array = NULL;
5826         void *virtaddr = NULL;
5827         struct lpfc_mbx_nembed_rsrc_extent *n_rsrc;
5828         struct lpfc_mbx_alloc_rsrc_extents *rsrc_ext;
5829         struct list_head *ext_blk_list;
5830 
5831         rc = lpfc_sli4_get_avail_extnt_rsrc(phba, type,
5832                                             &rsrc_cnt,
5833                                             &rsrc_size);
5834         if (unlikely(rc))
5835                 return -EIO;
5836 
5837         if ((rsrc_cnt == 0) || (rsrc_size == 0)) {
5838                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_INIT,
5839                         "3009 No available Resource Extents "
5840                         "for resource type 0x%x: Count: 0x%x, "
5841                         "Size 0x%x\n", type, rsrc_cnt,
5842                         rsrc_size);
5843                 return -ENOMEM;
5844         }
5845 
5846         lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_INIT | LOG_SLI,
5847                         "2903 Post resource extents type-0x%x: "
5848                         "count:%d, size %d\n", type, rsrc_cnt, rsrc_size);
5849 
5850         mbox = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5851         if (!mbox)
5852                 return -ENOMEM;
5853 
5854         rc = lpfc_sli4_cfg_post_extnts(phba, rsrc_cnt, type, &emb, mbox);
5855         if (unlikely(rc)) {
5856                 rc = -EIO;
5857                 goto err_exit;
5858         }
5859 
5860         /*
5861          * Figure out where the response is located.  Then get local pointers
5862          * to the response data.  The port does not guarantee to respond to
5863          * all extents counts request so update the local variable with the
5864          * allocated count from the port.
5865          */
5866         if (emb == LPFC_SLI4_MBX_EMBED) {
5867                 rsrc_ext = &mbox->u.mqe.un.alloc_rsrc_extents;
5868                 id_array = &rsrc_ext->u.rsp.id[0];
5869                 rsrc_cnt = bf_get(lpfc_mbx_rsrc_cnt, &rsrc_ext->u.rsp);
5870         } else {
5871                 virtaddr = mbox->sge_array->addr[0];
5872                 n_rsrc = (struct lpfc_mbx_nembed_rsrc_extent *) virtaddr;
5873                 rsrc_cnt = bf_get(lpfc_mbx_rsrc_cnt, n_rsrc);
5874                 id_array = &n_rsrc->id;
5875         }
5876 
5877         longs = ((rsrc_cnt * rsrc_size) + BITS_PER_LONG - 1) / BITS_PER_LONG;
5878         rsrc_id_cnt = rsrc_cnt * rsrc_size;
5879 
5880         /*
5881          * Based on the resource size and count, correct the base and max
5882          * resource values.
5883          */
5884         length = sizeof(struct lpfc_rsrc_blks);
5885         switch (type) {
5886         case LPFC_RSC_TYPE_FCOE_RPI:
5887                 phba->sli4_hba.rpi_bmask = kcalloc(longs,
5888                                                    sizeof(unsigned long),
5889                                                    GFP_KERNEL);
5890                 if (unlikely(!phba->sli4_hba.rpi_bmask)) {
5891                         rc = -ENOMEM;
5892                         goto err_exit;
5893                 }
5894                 phba->sli4_hba.rpi_ids = kcalloc(rsrc_id_cnt,
5895                                                  sizeof(uint16_t),
5896                                                  GFP_KERNEL);
5897                 if (unlikely(!phba->sli4_hba.rpi_ids)) {
5898                         kfree(phba->sli4_hba.rpi_bmask);
5899                         rc = -ENOMEM;
5900                         goto err_exit;
5901                 }
5902 
5903                 /*
5904                  * The next_rpi was initialized with the maximum available
5905                  * count but the port may allocate a smaller number.  Catch
5906                  * that case and update the next_rpi.
5907                  */
5908                 phba->sli4_hba.next_rpi = rsrc_id_cnt;
5909 
5910                 /* Initialize local ptrs for common extent processing later. */
5911                 bmask = phba->sli4_hba.rpi_bmask;
5912                 ids = phba->sli4_hba.rpi_ids;
5913                 ext_blk_list = &phba->sli4_hba.lpfc_rpi_blk_list;
5914                 break;
5915         case LPFC_RSC_TYPE_FCOE_VPI:
5916                 phba->vpi_bmask = kcalloc(longs, sizeof(unsigned long),
5917                                           GFP_KERNEL);
5918                 if (unlikely(!phba->vpi_bmask)) {
5919                         rc = -ENOMEM;
5920                         goto err_exit;
5921                 }
5922                 phba->vpi_ids = kcalloc(rsrc_id_cnt, sizeof(uint16_t),
5923                                          GFP_KERNEL);
5924                 if (unlikely(!phba->vpi_ids)) {
5925                         kfree(phba->vpi_bmask);
5926                         rc = -ENOMEM;
5927                         goto err_exit;
5928                 }
5929 
5930                 /* Initialize local ptrs for common extent processing later. */
5931                 bmask = phba->vpi_bmask;
5932                 ids = phba->vpi_ids;
5933                 ext_blk_list = &phba->lpfc_vpi_blk_list;
5934                 break;
5935         case LPFC_RSC_TYPE_FCOE_XRI:
5936                 phba->sli4_hba.xri_bmask = kcalloc(longs,
5937                                                    sizeof(unsigned long),
5938                                                    GFP_KERNEL);
5939                 if (unlikely(!phba->sli4_hba.xri_bmask)) {
5940                         rc = -ENOMEM;
5941                         goto err_exit;
5942                 }
5943                 phba->sli4_hba.max_cfg_param.xri_used = 0;
5944                 phba->sli4_hba.xri_ids = kcalloc(rsrc_id_cnt,
5945                                                  sizeof(uint16_t),
5946                                                  GFP_KERNEL);
5947                 if (unlikely(!phba->sli4_hba.xri_ids)) {
5948                         kfree(phba->sli4_hba.xri_bmask);
5949                         rc = -ENOMEM;
5950                         goto err_exit;
5951                 }
5952 
5953                 /* Initialize local ptrs for common extent processing later. */
5954                 bmask = phba->sli4_hba.xri_bmask;
5955                 ids = phba->sli4_hba.xri_ids;
5956                 ext_blk_list = &phba->sli4_hba.lpfc_xri_blk_list;
5957                 break;
5958         case LPFC_RSC_TYPE_FCOE_VFI:
5959                 phba->sli4_hba.vfi_bmask = kcalloc(longs,
5960                                                    sizeof(unsigned long),
5961                                                    GFP_KERNEL);
5962                 if (unlikely(!phba->sli4_hba.vfi_bmask)) {
5963                         rc = -ENOMEM;
5964                         goto err_exit;
5965                 }
5966                 phba->sli4_hba.vfi_ids = kcalloc(rsrc_id_cnt,
5967                                                  sizeof(uint16_t),
5968                                                  GFP_KERNEL);
5969                 if (unlikely(!phba->sli4_hba.vfi_ids)) {
5970                         kfree(phba->sli4_hba.vfi_bmask);
5971                         rc = -ENOMEM;
5972                         goto err_exit;
5973                 }
5974 
5975                 /* Initialize local ptrs for common extent processing later. */
5976                 bmask = phba->sli4_hba.vfi_bmask;
5977                 ids = phba->sli4_hba.vfi_ids;
5978                 ext_blk_list = &phba->sli4_hba.lpfc_vfi_blk_list;
5979                 break;
5980         default:
5981                 /* Unsupported Opcode.  Fail call. */
5982                 id_array = NULL;
5983                 bmask = NULL;
5984                 ids = NULL;
5985                 ext_blk_list = NULL;
5986                 goto err_exit;
5987         }
5988 
5989         /*
5990          * Complete initializing the extent configuration with the
5991          * allocated ids assigned to this function.  The bitmask serves
5992          * as an index into the array and manages the available ids.  The
5993          * array just stores the ids communicated to the port via the wqes.
5994          */
5995         for (i = 0, j = 0, k = 0; i < rsrc_cnt; i++) {
5996                 if ((i % 2) == 0)
5997                         rsrc_id = bf_get(lpfc_mbx_rsrc_id_word4_0,
5998                                          &id_array[k]);
5999                 else
6000                         rsrc_id = bf_get(lpfc_mbx_rsrc_id_word4_1,
6001                                          &id_array[k]);
6002 
6003                 rsrc_blks = kzalloc(length, GFP_KERNEL);
6004                 if (unlikely(!rsrc_blks)) {
6005                         rc = -ENOMEM;
6006                         kfree(bmask);
6007                         kfree(ids);
6008                         goto err_exit;
6009                 }
6010                 rsrc_blks->rsrc_start = rsrc_id;
6011                 rsrc_blks->rsrc_size = rsrc_size;
6012                 list_add_tail(&rsrc_blks->list, ext_blk_list);
6013                 rsrc_start = rsrc_id;
6014                 if ((type == LPFC_RSC_TYPE_FCOE_XRI) && (j == 0)) {
6015                         phba->sli4_hba.io_xri_start = rsrc_start +
6016                                 lpfc_sli4_get_iocb_cnt(phba);
6017                 }
6018 
6019                 while (rsrc_id < (rsrc_start + rsrc_size)) {
6020                         ids[j] = rsrc_id;
6021                         rsrc_id++;
6022                         j++;
6023                 }
6024                 /* Entire word processed.  Get next word.*/
6025                 if ((i % 2) == 1)
6026                         k++;
6027         }
6028  err_exit:
6029         lpfc_sli4_mbox_cmd_free(phba, mbox);
6030         return rc;
6031 }
6032 
6033 
6034 
6035 /**
6036  * lpfc_sli4_dealloc_extent - Deallocate an SLI4 resource extent.
6037  * @phba: Pointer to HBA context object.
6038  * @type: the extent's type.
6039  *
6040  * This function deallocates all extents of a particular resource type.
6041  * SLI4 does not allow for deallocating a particular extent range.  It
6042  * is the caller's responsibility to release all kernel memory resources.
6043  **/
6044 static int
6045 lpfc_sli4_dealloc_extent(struct lpfc_hba *phba, uint16_t type)
6046 {
6047         int rc;
6048         uint32_t length, mbox_tmo = 0;
6049         LPFC_MBOXQ_t *mbox;
6050         struct lpfc_mbx_dealloc_rsrc_extents *dealloc_rsrc;
6051         struct lpfc_rsrc_blks *rsrc_blk, *rsrc_blk_next;
6052 
6053         mbox = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6054         if (!mbox)
6055                 return -ENOMEM;
6056 
6057         /*
6058          * This function sends an embedded mailbox because it only sends the
6059          * the resource type.  All extents of this type are released by the
6060          * port.
6061          */
6062         length = (sizeof(struct lpfc_mbx_dealloc_rsrc_extents) -
6063                   sizeof(struct lpfc_sli4_cfg_mhdr));
6064         lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
6065                          LPFC_MBOX_OPCODE_DEALLOC_RSRC_EXTENT,
6066                          length, LPFC_SLI4_MBX_EMBED);
6067 
6068         /* Send an extents count of 0 - the dealloc doesn't use it. */
6069         rc = lpfc_sli4_mbox_rsrc_extent(phba, mbox, 0, type,
6070                                         LPFC_SLI4_MBX_EMBED);
6071         if (unlikely(rc)) {
6072                 rc = -EIO;
6073                 goto out_free_mbox;
6074         }
6075         if (!phba->sli4_hba.intr_enable)
6076                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
6077         else {
6078                 mbox_tmo = lpfc_mbox_tmo_val(phba, mbox);
6079                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo);
6080         }
6081         if (unlikely(rc)) {
6082                 rc = -EIO;
6083                 goto out_free_mbox;
6084         }
6085 
6086         dealloc_rsrc = &mbox->u.mqe.un.dealloc_rsrc_extents;
6087         if (bf_get(lpfc_mbox_hdr_status,
6088                    &dealloc_rsrc->header.cfg_shdr.response)) {
6089                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_INIT,
6090                                 "2919 Failed to release resource extents "
6091                                 "for type %d - Status 0x%x Add'l Status 0x%x. "
6092                                 "Resource memory not released.\n",
6093                                 type,
6094                                 bf_get(lpfc_mbox_hdr_status,
6095                                     &dealloc_rsrc->header.cfg_shdr.response),
6096                                 bf_get(lpfc_mbox_hdr_add_status,
6097                                     &dealloc_rsrc->header.cfg_shdr.response));
6098                 rc = -EIO;
6099                 goto out_free_mbox;
6100         }
6101 
6102         /* Release kernel memory resources for the specific type. */
6103         switch (type) {
6104         case LPFC_RSC_TYPE_FCOE_VPI:
6105                 kfree(phba->vpi_bmask);
6106                 kfree(phba->vpi_ids);
6107                 bf_set(lpfc_vpi_rsrc_rdy, &phba->sli4_hba.sli4_flags, 0);
6108                 list_for_each_entry_safe(rsrc_blk, rsrc_blk_next,
6109                                     &phba->lpfc_vpi_blk_list, list) {
6110                         list_del_init(&rsrc_blk->list);
6111                         kfree(rsrc_blk);
6112                 }
6113                 phba->sli4_hba.max_cfg_param.vpi_used = 0;
6114                 break;
6115         case LPFC_RSC_TYPE_FCOE_XRI:
6116                 kfree(phba->sli4_hba.xri_bmask);
6117                 kfree(phba->sli4_hba.xri_ids);
6118                 list_for_each_entry_safe(rsrc_blk, rsrc_blk_next,
6119                                     &phba->sli4_hba.lpfc_xri_blk_list, list) {
6120                         list_del_init(&rsrc_blk->list);
6121                         kfree(rsrc_blk);
6122                 }
6123                 break;
6124         case LPFC_RSC_TYPE_FCOE_VFI:
6125                 kfree(phba->sli4_hba.vfi_bmask);
6126                 kfree(phba->sli4_hba.vfi_ids);
6127                 bf_set(lpfc_vfi_rsrc_rdy, &phba->sli4_hba.sli4_flags, 0);
6128                 list_for_each_entry_safe(rsrc_blk, rsrc_blk_next,
6129                                     &phba->sli4_hba.lpfc_vfi_blk_list, list) {
6130                         list_del_init(&rsrc_blk->list);
6131                         kfree(rsrc_blk);
6132                 }
6133                 break;
6134         case LPFC_RSC_TYPE_FCOE_RPI:
6135                 /* RPI bitmask and physical id array are cleaned up earlier. */
6136                 list_for_each_entry_safe(rsrc_blk, rsrc_blk_next,
6137                                     &phba->sli4_hba.lpfc_rpi_blk_list, list) {
6138                         list_del_init(&rsrc_blk->list);
6139                         kfree(rsrc_blk);
6140                 }
6141                 break;
6142         default:
6143                 break;
6144         }
6145 
6146         bf_set(lpfc_idx_rsrc_rdy, &phba->sli4_hba.sli4_flags, 0);
6147 
6148  out_free_mbox:
6149         mempool_free(mbox, phba->mbox_mem_pool);
6150         return rc;
6151 }
6152 
6153 static void
6154 lpfc_set_features(struct lpfc_hba *phba, LPFC_MBOXQ_t *mbox,
6155                   uint32_t feature)
6156 {
6157         uint32_t len;
6158 
6159         len = sizeof(struct lpfc_mbx_set_feature) -
6160                 sizeof(struct lpfc_sli4_cfg_mhdr);
6161         lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
6162                          LPFC_MBOX_OPCODE_SET_FEATURES, len,
6163                          LPFC_SLI4_MBX_EMBED);
6164 
6165         switch (feature) {
6166         case LPFC_SET_UE_RECOVERY:
6167                 bf_set(lpfc_mbx_set_feature_UER,
6168                        &mbox->u.mqe.un.set_feature, 1);
6169                 mbox->u.mqe.un.set_feature.feature = LPFC_SET_UE_RECOVERY;
6170                 mbox->u.mqe.un.set_feature.param_len = 8;
6171                 break;
6172         case LPFC_SET_MDS_DIAGS:
6173                 bf_set(lpfc_mbx_set_feature_mds,
6174                        &mbox->u.mqe.un.set_feature, 1);
6175                 bf_set(lpfc_mbx_set_feature_mds_deep_loopbk,
6176                        &mbox->u.mqe.un.set_feature, 1);
6177                 mbox->u.mqe.un.set_feature.feature = LPFC_SET_MDS_DIAGS;
6178                 mbox->u.mqe.un.set_feature.param_len = 8;
6179                 break;
6180         }
6181 
6182         return;
6183 }
6184 
6185 /**
6186  * lpfc_ras_stop_fwlog: Disable FW logging by the adapter
6187  * @phba: Pointer to HBA context object.
6188  *
6189  * Disable FW logging into host memory on the adapter. To
6190  * be done before reading logs from the host memory.
6191  **/
6192 void
6193 lpfc_ras_stop_fwlog(struct lpfc_hba *phba)
6194 {
6195         struct lpfc_ras_fwlog *ras_fwlog = &phba->ras_fwlog;
6196 
6197         ras_fwlog->ras_active = false;
6198 
6199         /* Disable FW logging to host memory */
6200         writel(LPFC_CTL_PDEV_CTL_DDL_RAS,
6201                phba->sli4_hba.conf_regs_memmap_p + LPFC_CTL_PDEV_CTL_OFFSET);
6202 }
6203 
6204 /**
6205  * lpfc_sli4_ras_dma_free - Free memory allocated for FW logging.
6206  * @phba: Pointer to HBA context object.
6207  *
6208  * This function is called to free memory allocated for RAS FW logging
6209  * support in the driver.
6210  **/
6211 void
6212 lpfc_sli4_ras_dma_free(struct lpfc_hba *phba)
6213 {
6214         struct lpfc_ras_fwlog *ras_fwlog = &phba->ras_fwlog;
6215         struct lpfc_dmabuf *dmabuf, *next;
6216 
6217         if (!list_empty(&ras_fwlog->fwlog_buff_list)) {
6218                 list_for_each_entry_safe(dmabuf, next,
6219                                     &ras_fwlog->fwlog_buff_list,
6220                                     list) {
6221                         list_del(&dmabuf->list);
6222                         dma_free_coherent(&phba->pcidev->dev,
6223                                           LPFC_RAS_MAX_ENTRY_SIZE,
6224                                           dmabuf->virt, dmabuf->phys);
6225                         kfree(dmabuf);
6226                 }
6227         }
6228 
6229         if (ras_fwlog->lwpd.virt) {
6230                 dma_free_coherent(&phba->pcidev->dev,
6231                                   sizeof(uint32_t) * 2,
6232                                   ras_fwlog->lwpd.virt,
6233                                   ras_fwlog->lwpd.phys);
6234                 ras_fwlog->lwpd.virt = NULL;
6235         }
6236 
6237         ras_fwlog->ras_active = false;
6238 }
6239 
6240 /**
6241  * lpfc_sli4_ras_dma_alloc: Allocate memory for FW support
6242  * @phba: Pointer to HBA context object.
6243  * @fwlog_buff_count: Count of buffers to be created.
6244  *
6245  * This routine DMA memory for Log Write Position Data[LPWD] and buffer
6246  * to update FW log is posted to the adapter.
6247  * Buffer count is calculated based on module param ras_fwlog_buffsize
6248  * Size of each buffer posted to FW is 64K.
6249  **/
6250 
6251 static int
6252 lpfc_sli4_ras_dma_alloc(struct lpfc_hba *phba,
6253                         uint32_t fwlog_buff_count)
6254 {
6255         struct lpfc_ras_fwlog *ras_fwlog = &phba->ras_fwlog;
6256         struct lpfc_dmabuf *dmabuf;
6257         int rc = 0, i = 0;
6258 
6259         /* Initialize List */
6260         INIT_LIST_HEAD(&ras_fwlog->fwlog_buff_list);
6261 
6262         /* Allocate memory for the LWPD */
6263         ras_fwlog->lwpd.virt = dma_alloc_coherent(&phba->pcidev->dev,
6264                                             sizeof(uint32_t) * 2,
6265                                             &ras_fwlog->lwpd.phys,
6266                                             GFP_KERNEL);
6267         if (!ras_fwlog->lwpd.virt) {
6268                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6269                                 "6185 LWPD Memory Alloc Failed\n");
6270 
6271                 return -ENOMEM;
6272         }
6273 
6274         ras_fwlog->fw_buffcount = fwlog_buff_count;
6275         for (i = 0; i < ras_fwlog->fw_buffcount; i++) {
6276                 dmabuf = kzalloc(sizeof(struct lpfc_dmabuf),
6277                                  GFP_KERNEL);
6278                 if (!dmabuf) {
6279                         rc = -ENOMEM;
6280                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
6281                                         "6186 Memory Alloc failed FW logging");
6282                         goto free_mem;
6283                 }
6284 
6285                 dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
6286                                                   LPFC_RAS_MAX_ENTRY_SIZE,
6287                                                   &dmabuf->phys, GFP_KERNEL);
6288                 if (!dmabuf->virt) {
6289                         kfree(dmabuf);
6290                         rc = -ENOMEM;
6291                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
6292                                         "6187 DMA Alloc Failed FW logging");
6293                         goto free_mem;
6294                 }
6295                 dmabuf->buffer_tag = i;
6296                 list_add_tail(&dmabuf->list, &ras_fwlog->fwlog_buff_list);
6297         }
6298 
6299 free_mem:
6300         if (rc)
6301                 lpfc_sli4_ras_dma_free(phba);
6302 
6303         return rc;
6304 }
6305 
6306 /**
6307  * lpfc_sli4_ras_mbox_cmpl: Completion handler for RAS MBX command
6308  * @phba: pointer to lpfc hba data structure.
6309  * @pmboxq: pointer to the driver internal queue element for mailbox command.
6310  *
6311  * Completion handler for driver's RAS MBX command to the device.
6312  **/
6313 static void
6314 lpfc_sli4_ras_mbox_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
6315 {
6316         MAILBOX_t *mb;
6317         union lpfc_sli4_cfg_shdr *shdr;
6318         uint32_t shdr_status, shdr_add_status;
6319         struct lpfc_ras_fwlog *ras_fwlog = &phba->ras_fwlog;
6320 
6321         mb = &pmb->u.mb;
6322 
6323         shdr = (union lpfc_sli4_cfg_shdr *)
6324                 &pmb->u.mqe.un.ras_fwlog.header.cfg_shdr;
6325         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
6326         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
6327 
6328         if (mb->mbxStatus != MBX_SUCCESS || shdr_status) {
6329                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
6330                                 "6188 FW LOG mailbox "
6331                                 "completed with status x%x add_status x%x,"
6332                                 " mbx status x%x\n",
6333                                 shdr_status, shdr_add_status, mb->mbxStatus);
6334 
6335                 ras_fwlog->ras_hwsupport = false;
6336                 goto disable_ras;
6337         }
6338 
6339         ras_fwlog->ras_active = true;
6340         mempool_free(pmb, phba->mbox_mem_pool);
6341 
6342         return;
6343 
6344 disable_ras:
6345         /* Free RAS DMA memory */
6346         lpfc_sli4_ras_dma_free(phba);
6347         mempool_free(pmb, phba->mbox_mem_pool);
6348 }
6349 
6350 /**
6351  * lpfc_sli4_ras_fwlog_init: Initialize memory and post RAS MBX command
6352  * @phba: pointer to lpfc hba data structure.
6353  * @fwlog_level: Logging verbosity level.
6354  * @fwlog_enable: Enable/Disable logging.
6355  *
6356  * Initialize memory and post mailbox command to enable FW logging in host
6357  * memory.
6358  **/
6359 int
6360 lpfc_sli4_ras_fwlog_init(struct lpfc_hba *phba,
6361                          uint32_t fwlog_level,
6362                          uint32_t fwlog_enable)
6363 {
6364         struct lpfc_ras_fwlog *ras_fwlog = &phba->ras_fwlog;
6365         struct lpfc_mbx_set_ras_fwlog *mbx_fwlog = NULL;
6366         struct lpfc_dmabuf *dmabuf;
6367         LPFC_MBOXQ_t *mbox;
6368         uint32_t len = 0, fwlog_buffsize, fwlog_entry_count;
6369         int rc = 0;
6370 
6371         fwlog_buffsize = (LPFC_RAS_MIN_BUFF_POST_SIZE *
6372                           phba->cfg_ras_fwlog_buffsize);
6373         fwlog_entry_count = (fwlog_buffsize/LPFC_RAS_MAX_ENTRY_SIZE);
6374 
6375         /*
6376          * If re-enabling FW logging support use earlier allocated
6377          * DMA buffers while posting MBX command.
6378          **/
6379         if (!ras_fwlog->lwpd.virt) {
6380                 rc = lpfc_sli4_ras_dma_alloc(phba, fwlog_entry_count);
6381                 if (rc) {
6382                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
6383                                         "6189 FW Log Memory Allocation Failed");
6384                         return rc;
6385                 }
6386         }
6387 
6388         /* Setup Mailbox command */
6389         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6390         if (!mbox) {
6391                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6392                                 "6190 RAS MBX Alloc Failed");
6393                 rc = -ENOMEM;
6394                 goto mem_free;
6395         }
6396 
6397         ras_fwlog->fw_loglevel = fwlog_level;
6398         len = (sizeof(struct lpfc_mbx_set_ras_fwlog) -
6399                 sizeof(struct lpfc_sli4_cfg_mhdr));
6400 
6401         lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_LOWLEVEL,
6402                          LPFC_MBOX_OPCODE_SET_DIAG_LOG_OPTION,
6403                          len, LPFC_SLI4_MBX_EMBED);
6404 
6405         mbx_fwlog = (struct lpfc_mbx_set_ras_fwlog *)&mbox->u.mqe.un.ras_fwlog;
6406         bf_set(lpfc_fwlog_enable, &mbx_fwlog->u.request,
6407                fwlog_enable);
6408         bf_set(lpfc_fwlog_loglvl, &mbx_fwlog->u.request,
6409                ras_fwlog->fw_loglevel);
6410         bf_set(lpfc_fwlog_buffcnt, &mbx_fwlog->u.request,
6411                ras_fwlog->fw_buffcount);
6412         bf_set(lpfc_fwlog_buffsz, &mbx_fwlog->u.request,
6413                LPFC_RAS_MAX_ENTRY_SIZE/SLI4_PAGE_SIZE);
6414 
6415         /* Update DMA buffer address */
6416         list_for_each_entry(dmabuf, &ras_fwlog->fwlog_buff_list, list) {
6417                 memset(dmabuf->virt, 0, LPFC_RAS_MAX_ENTRY_SIZE);
6418 
6419                 mbx_fwlog->u.request.buff_fwlog[dmabuf->buffer_tag].addr_lo =
6420                         putPaddrLow(dmabuf->phys);
6421 
6422                 mbx_fwlog->u.request.buff_fwlog[dmabuf->buffer_tag].addr_hi =
6423                         putPaddrHigh(dmabuf->phys);
6424         }
6425 
6426         /* Update LPWD address */
6427         mbx_fwlog->u.request.lwpd.addr_lo = putPaddrLow(ras_fwlog->lwpd.phys);
6428         mbx_fwlog->u.request.lwpd.addr_hi = putPaddrHigh(ras_fwlog->lwpd.phys);
6429 
6430         mbox->vport = phba->pport;
6431         mbox->mbox_cmpl = lpfc_sli4_ras_mbox_cmpl;
6432 
6433         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
6434 
6435         if (rc == MBX_NOT_FINISHED) {
6436                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6437                                 "6191 FW-Log Mailbox failed. "
6438                                 "status %d mbxStatus : x%x", rc,
6439                                 bf_get(lpfc_mqe_status, &mbox->u.mqe));
6440                 mempool_free(mbox, phba->mbox_mem_pool);
6441                 rc = -EIO;
6442                 goto mem_free;
6443         } else
6444                 rc = 0;
6445 mem_free:
6446         if (rc)
6447                 lpfc_sli4_ras_dma_free(phba);
6448 
6449         return rc;
6450 }
6451 
6452 /**
6453  * lpfc_sli4_ras_setup - Check if RAS supported on the adapter
6454  * @phba: Pointer to HBA context object.
6455  *
6456  * Check if RAS is supported on the adapter and initialize it.
6457  **/
6458 void
6459 lpfc_sli4_ras_setup(struct lpfc_hba *phba)
6460 {
6461         /* Check RAS FW Log needs to be enabled or not */
6462         if (lpfc_check_fwlog_support(phba))
6463                 return;
6464 
6465         lpfc_sli4_ras_fwlog_init(phba, phba->cfg_ras_fwlog_level,
6466                                  LPFC_RAS_ENABLE_LOGGING);
6467 }
6468 
6469 /**
6470  * lpfc_sli4_alloc_resource_identifiers - Allocate all SLI4 resource extents.
6471  * @phba: Pointer to HBA context object.
6472  *
6473  * This function allocates all SLI4 resource identifiers.
6474  **/
6475 int
6476 lpfc_sli4_alloc_resource_identifiers(struct lpfc_hba *phba)
6477 {
6478         int i, rc, error = 0;
6479         uint16_t count, base;
6480         unsigned long longs;
6481 
6482         if (!phba->sli4_hba.rpi_hdrs_in_use)
6483                 phba->sli4_hba.next_rpi = phba->sli4_hba.max_cfg_param.max_rpi;
6484         if (phba->sli4_hba.extents_in_use) {
6485                 /*
6486                  * The port supports resource extents. The XRI, VPI, VFI, RPI
6487                  * resource extent count must be read and allocated before
6488                  * provisioning the resource id arrays.
6489                  */
6490                 if (bf_get(lpfc_idx_rsrc_rdy, &phba->sli4_hba.sli4_flags) ==
6491                     LPFC_IDX_RSRC_RDY) {
6492                         /*
6493                          * Extent-based resources are set - the driver could
6494                          * be in a port reset. Figure out if any corrective
6495                          * actions need to be taken.
6496                          */
6497                         rc = lpfc_sli4_chk_avail_extnt_rsrc(phba,
6498                                                  LPFC_RSC_TYPE_FCOE_VFI);
6499                         if (rc != 0)
6500                                 error++;
6501                         rc = lpfc_sli4_chk_avail_extnt_rsrc(phba,
6502                                                  LPFC_RSC_TYPE_FCOE_VPI);
6503                         if (rc != 0)
6504                                 error++;
6505                         rc = lpfc_sli4_chk_avail_extnt_rsrc(phba,
6506                                                  LPFC_RSC_TYPE_FCOE_XRI);
6507                         if (rc != 0)
6508                                 error++;
6509                         rc = lpfc_sli4_chk_avail_extnt_rsrc(phba,
6510                                                  LPFC_RSC_TYPE_FCOE_RPI);
6511                         if (rc != 0)
6512                                 error++;
6513 
6514                         /*
6515                          * It's possible that the number of resources
6516                          * provided to this port instance changed between
6517                          * resets.  Detect this condition and reallocate
6518                          * resources.  Otherwise, there is no action.
6519                          */
6520                         if (error) {
6521                                 lpfc_printf_log(phba, KERN_INFO,
6522                                                 LOG_MBOX | LOG_INIT,
6523                                                 "2931 Detected extent resource "
6524                                                 "change.  Reallocating all "
6525                                                 "extents.\n");
6526                                 rc = lpfc_sli4_dealloc_extent(phba,
6527                                                  LPFC_RSC_TYPE_FCOE_VFI);
6528                                 rc = lpfc_sli4_dealloc_extent(phba,
6529                                                  LPFC_RSC_TYPE_FCOE_VPI);
6530                                 rc = lpfc_sli4_dealloc_extent(phba,
6531                                                  LPFC_RSC_TYPE_FCOE_XRI);
6532                                 rc = lpfc_sli4_dealloc_extent(phba,
6533                                                  LPFC_RSC_TYPE_FCOE_RPI);
6534                         } else
6535                                 return 0;
6536                 }
6537 
6538                 rc = lpfc_sli4_alloc_extent(phba, LPFC_RSC_TYPE_FCOE_VFI);
6539                 if (unlikely(rc))
6540                         goto err_exit;
6541 
6542                 rc = lpfc_sli4_alloc_extent(phba, LPFC_RSC_TYPE_FCOE_VPI);
6543                 if (unlikely(rc))
6544                         goto err_exit;
6545 
6546                 rc = lpfc_sli4_alloc_extent(phba, LPFC_RSC_TYPE_FCOE_RPI);
6547                 if (unlikely(rc))
6548                         goto err_exit;
6549 
6550                 rc = lpfc_sli4_alloc_extent(phba, LPFC_RSC_TYPE_FCOE_XRI);
6551                 if (unlikely(rc))
6552                         goto err_exit;
6553                 bf_set(lpfc_idx_rsrc_rdy, &phba->sli4_hba.sli4_flags,
6554                        LPFC_IDX_RSRC_RDY);
6555                 return rc;
6556         } else {
6557                 /*
6558                  * The port does not support resource extents.  The XRI, VPI,
6559                  * VFI, RPI resource ids were determined from READ_CONFIG.
6560                  * Just allocate the bitmasks and provision the resource id
6561                  * arrays.  If a port reset is active, the resources don't
6562                  * need any action - just exit.
6563                  */
6564                 if (bf_get(lpfc_idx_rsrc_rdy, &phba->sli4_hba.sli4_flags) ==
6565                     LPFC_IDX_RSRC_RDY) {
6566                         lpfc_sli4_dealloc_resource_identifiers(phba);
6567                         lpfc_sli4_remove_rpis(phba);
6568                 }
6569                 /* RPIs. */
6570                 count = phba->sli4_hba.max_cfg_param.max_rpi;
6571                 if (count <= 0) {
6572                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
6573                                         "3279 Invalid provisioning of "
6574                                         "rpi:%d\n", count);
6575                         rc = -EINVAL;
6576                         goto err_exit;
6577                 }
6578                 base = phba->sli4_hba.max_cfg_param.rpi_base;
6579                 longs = (count + BITS_PER_LONG - 1) / BITS_PER_LONG;
6580                 phba->sli4_hba.rpi_bmask = kcalloc(longs,
6581                                                    sizeof(unsigned long),
6582                                                    GFP_KERNEL);
6583                 if (unlikely(!phba->sli4_hba.rpi_bmask)) {
6584                         rc = -ENOMEM;
6585                         goto err_exit;
6586                 }
6587                 phba->sli4_hba.rpi_ids = kcalloc(count, sizeof(uint16_t),
6588                                                  GFP_KERNEL);
6589                 if (unlikely(!phba->sli4_hba.rpi_ids)) {
6590                         rc = -ENOMEM;
6591                         goto free_rpi_bmask;
6592                 }
6593 
6594                 for (i = 0; i < count; i++)
6595                         phba->sli4_hba.rpi_ids[i] = base + i;
6596 
6597                 /* VPIs. */
6598                 count = phba->sli4_hba.max_cfg_param.max_vpi;
6599                 if (count <= 0) {
6600                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
6601                                         "3280 Invalid provisioning of "
6602                                         "vpi:%d\n", count);
6603                         rc = -EINVAL;
6604                         goto free_rpi_ids;
6605                 }
6606                 base = phba->sli4_hba.max_cfg_param.vpi_base;
6607                 longs = (count + BITS_PER_LONG - 1) / BITS_PER_LONG;
6608                 phba->vpi_bmask = kcalloc(longs, sizeof(unsigned long),
6609                                           GFP_KERNEL);
6610                 if (unlikely(!phba->vpi_bmask)) {
6611                         rc = -ENOMEM;
6612                         goto free_rpi_ids;
6613                 }
6614                 phba->vpi_ids = kcalloc(count, sizeof(uint16_t),
6615                                         GFP_KERNEL);
6616                 if (unlikely(!phba->vpi_ids)) {
6617                         rc = -ENOMEM;
6618                         goto free_vpi_bmask;
6619                 }
6620 
6621                 for (i = 0; i < count; i++)
6622                         phba->vpi_ids[i] = base + i;
6623 
6624                 /* XRIs. */
6625                 count = phba->sli4_hba.max_cfg_param.max_xri;
6626                 if (count <= 0) {
6627                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
6628                                         "3281 Invalid provisioning of "
6629                                         "xri:%d\n", count);
6630                         rc = -EINVAL;
6631                         goto free_vpi_ids;
6632                 }
6633                 base = phba->sli4_hba.max_cfg_param.xri_base;
6634                 longs = (count + BITS_PER_LONG - 1) / BITS_PER_LONG;
6635                 phba->sli4_hba.xri_bmask = kcalloc(longs,
6636                                                    sizeof(unsigned long),
6637                                                    GFP_KERNEL);
6638                 if (unlikely(!phba->sli4_hba.xri_bmask)) {
6639                         rc = -ENOMEM;
6640                         goto free_vpi_ids;
6641                 }
6642                 phba->sli4_hba.max_cfg_param.xri_used = 0;
6643                 phba->sli4_hba.xri_ids = kcalloc(count, sizeof(uint16_t),
6644                                                  GFP_KERNEL);
6645                 if (unlikely(!phba->sli4_hba.xri_ids)) {
6646                         rc = -ENOMEM;
6647                         goto free_xri_bmask;
6648                 }
6649 
6650                 for (i = 0; i < count; i++)
6651                         phba->sli4_hba.xri_ids[i] = base + i;
6652 
6653                 /* VFIs. */
6654                 count = phba->sli4_hba.max_cfg_param.max_vfi;
6655                 if (count <= 0) {
6656                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
6657                                         "3282 Invalid provisioning of "
6658                                         "vfi:%d\n", count);
6659                         rc = -EINVAL;
6660                         goto free_xri_ids;
6661                 }
6662                 base = phba->sli4_hba.max_cfg_param.vfi_base;
6663                 longs = (count + BITS_PER_LONG - 1) / BITS_PER_LONG;
6664                 phba->sli4_hba.vfi_bmask = kcalloc(longs,
6665                                                    sizeof(unsigned long),
6666                                                    GFP_KERNEL);
6667                 if (unlikely(!phba->sli4_hba.vfi_bmask)) {
6668                         rc = -ENOMEM;
6669                         goto free_xri_ids;
6670                 }
6671                 phba->sli4_hba.vfi_ids = kcalloc(count, sizeof(uint16_t),
6672                                                  GFP_KERNEL);
6673                 if (unlikely(!phba->sli4_hba.vfi_ids)) {
6674                         rc = -ENOMEM;
6675                         goto free_vfi_bmask;
6676                 }
6677 
6678                 for (i = 0; i < count; i++)
6679                         phba->sli4_hba.vfi_ids[i] = base + i;
6680 
6681                 /*
6682                  * Mark all resources ready.  An HBA reset doesn't need
6683                  * to reset the initialization.
6684                  */
6685                 bf_set(lpfc_idx_rsrc_rdy, &phba->sli4_hba.sli4_flags,
6686                        LPFC_IDX_RSRC_RDY);
6687                 return 0;
6688         }
6689 
6690  free_vfi_bmask:
6691         kfree(phba->sli4_hba.vfi_bmask);
6692         phba->sli4_hba.vfi_bmask = NULL;
6693  free_xri_ids:
6694         kfree(phba->sli4_hba.xri_ids);
6695         phba->sli4_hba.xri_ids = NULL;
6696  free_xri_bmask:
6697         kfree(phba->sli4_hba.xri_bmask);
6698         phba->sli4_hba.xri_bmask = NULL;
6699  free_vpi_ids:
6700         kfree(phba->vpi_ids);
6701         phba->vpi_ids = NULL;
6702  free_vpi_bmask:
6703         kfree(phba->vpi_bmask);
6704         phba->vpi_bmask = NULL;
6705  free_rpi_ids:
6706         kfree(phba->sli4_hba.rpi_ids);
6707         phba->sli4_hba.rpi_ids = NULL;
6708  free_rpi_bmask:
6709         kfree(phba->sli4_hba.rpi_bmask);
6710         phba->sli4_hba.rpi_bmask = NULL;
6711  err_exit:
6712         return rc;
6713 }
6714 
6715 /**
6716  * lpfc_sli4_dealloc_resource_identifiers - Deallocate all SLI4 resource extents.
6717  * @phba: Pointer to HBA context object.
6718  *
6719  * This function allocates the number of elements for the specified
6720  * resource type.
6721  **/
6722 int
6723 lpfc_sli4_dealloc_resource_identifiers(struct lpfc_hba *phba)
6724 {
6725         if (phba->sli4_hba.extents_in_use) {
6726                 lpfc_sli4_dealloc_extent(phba, LPFC_RSC_TYPE_FCOE_VPI);
6727                 lpfc_sli4_dealloc_extent(phba, LPFC_RSC_TYPE_FCOE_RPI);
6728                 lpfc_sli4_dealloc_extent(phba, LPFC_RSC_TYPE_FCOE_XRI);
6729                 lpfc_sli4_dealloc_extent(phba, LPFC_RSC_TYPE_FCOE_VFI);
6730         } else {
6731                 kfree(phba->vpi_bmask);
6732                 phba->sli4_hba.max_cfg_param.vpi_used = 0;
6733                 kfree(phba->vpi_ids);
6734                 bf_set(lpfc_vpi_rsrc_rdy, &phba->sli4_hba.sli4_flags, 0);
6735                 kfree(phba->sli4_hba.xri_bmask);
6736                 kfree(phba->sli4_hba.xri_ids);
6737                 kfree(phba->sli4_hba.vfi_bmask);
6738                 kfree(phba->sli4_hba.vfi_ids);
6739                 bf_set(lpfc_vfi_rsrc_rdy, &phba->sli4_hba.sli4_flags, 0);
6740                 bf_set(lpfc_idx_rsrc_rdy, &phba->sli4_hba.sli4_flags, 0);
6741         }
6742 
6743         return 0;
6744 }
6745 
6746 /**
6747  * lpfc_sli4_get_allocated_extnts - Get the port's allocated extents.
6748  * @phba: Pointer to HBA context object.
6749  * @type: The resource extent type.
6750  * @extnt_count: buffer to hold port extent count response
6751  * @extnt_size: buffer to hold port extent size response.
6752  *
6753  * This function calls the port to read the host allocated extents
6754  * for a particular type.
6755  **/
6756 int
6757 lpfc_sli4_get_allocated_extnts(struct lpfc_hba *phba, uint16_t type,
6758                                uint16_t *extnt_cnt, uint16_t *extnt_size)
6759 {
6760         bool emb;
6761         int rc = 0;
6762         uint16_t curr_blks = 0;
6763         uint32_t req_len, emb_len;
6764         uint32_t alloc_len, mbox_tmo;
6765         struct list_head *blk_list_head;
6766         struct lpfc_rsrc_blks *rsrc_blk;
6767         LPFC_MBOXQ_t *mbox;
6768         void *virtaddr = NULL;
6769         struct lpfc_mbx_nembed_rsrc_extent *n_rsrc;
6770         struct lpfc_mbx_alloc_rsrc_extents *rsrc_ext;
6771         union  lpfc_sli4_cfg_shdr *shdr;
6772 
6773         switch (type) {
6774         case LPFC_RSC_TYPE_FCOE_VPI:
6775                 blk_list_head = &phba->lpfc_vpi_blk_list;
6776                 break;
6777         case LPFC_RSC_TYPE_FCOE_XRI:
6778                 blk_list_head = &phba->sli4_hba.lpfc_xri_blk_list;
6779                 break;
6780         case LPFC_RSC_TYPE_FCOE_VFI:
6781                 blk_list_head = &phba->sli4_hba.lpfc_vfi_blk_list;
6782                 break;
6783         case LPFC_RSC_TYPE_FCOE_RPI:
6784                 blk_list_head = &phba->sli4_hba.lpfc_rpi_blk_list;
6785                 break;
6786         default:
6787                 return -EIO;
6788         }
6789 
6790         /* Count the number of extents currently allocatd for this type. */
6791         list_for_each_entry(rsrc_blk, blk_list_head, list) {
6792                 if (curr_blks == 0) {
6793                         /*
6794                          * The GET_ALLOCATED mailbox does not return the size,
6795                          * just the count.  The size should be just the size
6796                          * stored in the current allocated block and all sizes
6797                          * for an extent type are the same so set the return
6798                          * value now.
6799                          */
6800                         *extnt_size = rsrc_blk->rsrc_size;
6801                 }
6802                 curr_blks++;
6803         }
6804 
6805         /*
6806          * Calculate the size of an embedded mailbox.  The uint32_t
6807          * accounts for extents-specific word.
6808          */
6809         emb_len = sizeof(MAILBOX_t) - sizeof(struct mbox_header) -
6810                 sizeof(uint32_t);
6811 
6812         /*
6813          * Presume the allocation and response will fit into an embedded
6814          * mailbox.  If not true, reconfigure to a non-embedded mailbox.
6815          */
6816         emb = LPFC_SLI4_MBX_EMBED;
6817         req_len = emb_len;
6818         if (req_len > emb_len) {
6819                 req_len = curr_blks * sizeof(uint16_t) +
6820                         sizeof(union lpfc_sli4_cfg_shdr) +
6821                         sizeof(uint32_t);
6822                 emb = LPFC_SLI4_MBX_NEMBED;
6823         }
6824 
6825         mbox = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6826         if (!mbox)
6827                 return -ENOMEM;
6828         memset(mbox, 0, sizeof(LPFC_MBOXQ_t));
6829 
6830         alloc_len = lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
6831                                      LPFC_MBOX_OPCODE_GET_ALLOC_RSRC_EXTENT,
6832                                      req_len, emb);
6833         if (alloc_len < req_len) {
6834                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6835                         "2983 Allocated DMA memory size (x%x) is "
6836                         "less than the requested DMA memory "
6837                         "size (x%x)\n", alloc_len, req_len);
6838                 rc = -ENOMEM;
6839                 goto err_exit;
6840         }
6841         rc = lpfc_sli4_mbox_rsrc_extent(phba, mbox, curr_blks, type, emb);
6842         if (unlikely(rc)) {
6843                 rc = -EIO;
6844                 goto err_exit;
6845         }
6846 
6847         if (!phba->sli4_hba.intr_enable)
6848                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
6849         else {
6850                 mbox_tmo = lpfc_mbox_tmo_val(phba, mbox);
6851                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo);
6852         }
6853 
6854         if (unlikely(rc)) {
6855                 rc = -EIO;
6856                 goto err_exit;
6857         }
6858 
6859         /*
6860          * Figure out where the response is located.  Then get local pointers
6861          * to the response data.  The port does not guarantee to respond to
6862          * all extents counts request so update the local variable with the
6863          * allocated count from the port.
6864          */
6865         if (emb == LPFC_SLI4_MBX_EMBED) {
6866                 rsrc_ext = &mbox->u.mqe.un.alloc_rsrc_extents;
6867                 shdr = &rsrc_ext->header.cfg_shdr;
6868                 *extnt_cnt = bf_get(lpfc_mbx_rsrc_cnt, &rsrc_ext->u.rsp);
6869         } else {
6870                 virtaddr = mbox->sge_array->addr[0];
6871                 n_rsrc = (struct lpfc_mbx_nembed_rsrc_extent *) virtaddr;
6872                 shdr = &n_rsrc->cfg_shdr;
6873                 *extnt_cnt = bf_get(lpfc_mbx_rsrc_cnt, n_rsrc);
6874         }
6875 
6876         if (bf_get(lpfc_mbox_hdr_status, &shdr->response)) {
6877                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_INIT,
6878                         "2984 Failed to read allocated resources "
6879                         "for type %d - Status 0x%x Add'l Status 0x%x.\n",
6880                         type,
6881                         bf_get(lpfc_mbox_hdr_status, &shdr->response),
6882                         bf_get(lpfc_mbox_hdr_add_status, &shdr->response));
6883                 rc = -EIO;
6884                 goto err_exit;
6885         }
6886  err_exit:
6887         lpfc_sli4_mbox_cmd_free(phba, mbox);
6888         return rc;
6889 }
6890 
6891 /**
6892  * lpfc_sli4_repost_sgl_list - Repost the buffers sgl pages as block
6893  * @phba: pointer to lpfc hba data structure.
6894  * @pring: Pointer to driver SLI ring object.
6895  * @sgl_list: linked link of sgl buffers to post
6896  * @cnt: number of linked list buffers
6897  *
6898  * This routine walks the list of buffers that have been allocated and
6899  * repost them to the port by using SGL block post. This is needed after a
6900  * pci_function_reset/warm_start or start. It attempts to construct blocks
6901  * of buffer sgls which contains contiguous xris and uses the non-embedded
6902  * SGL block post mailbox commands to post them to the port. For single
6903  * buffer sgl with non-contiguous xri, if any, it shall use embedded SGL post
6904  * mailbox command for posting.
6905  *
6906  * Returns: 0 = success, non-zero failure.
6907  **/
6908 static int
6909 lpfc_sli4_repost_sgl_list(struct lpfc_hba *phba,
6910                           struct list_head *sgl_list, int cnt)
6911 {
6912         struct lpfc_sglq *sglq_entry = NULL;
6913         struct lpfc_sglq *sglq_entry_next = NULL;
6914         struct lpfc_sglq *sglq_entry_first = NULL;
6915         int status, total_cnt;
6916         int post_cnt = 0, num_posted = 0, block_cnt = 0;
6917         int last_xritag = NO_XRI;
6918         LIST_HEAD(prep_sgl_list);
6919         LIST_HEAD(blck_sgl_list);
6920         LIST_HEAD(allc_sgl_list);
6921         LIST_HEAD(post_sgl_list);
6922         LIST_HEAD(free_sgl_list);
6923 
6924         spin_lock_irq(&phba->hbalock);
6925         spin_lock(&phba->sli4_hba.sgl_list_lock);
6926         list_splice_init(sgl_list, &allc_sgl_list);
6927         spin_unlock(&phba->sli4_hba.sgl_list_lock);
6928         spin_unlock_irq(&phba->hbalock);
6929 
6930         total_cnt = cnt;
6931         list_for_each_entry_safe(sglq_entry, sglq_entry_next,
6932                                  &allc_sgl_list, list) {
6933                 list_del_init(&sglq_entry->list);
6934                 block_cnt++;
6935                 if ((last_xritag != NO_XRI) &&
6936                     (sglq_entry->sli4_xritag != last_xritag + 1)) {
6937                         /* a hole in xri block, form a sgl posting block */
6938                         list_splice_init(&prep_sgl_list, &blck_sgl_list);
6939                         post_cnt = block_cnt - 1;
6940                         /* prepare list for next posting block */
6941                         list_add_tail(&sglq_entry->list, &prep_sgl_list);
6942                         block_cnt = 1;
6943                 } else {
6944                         /* prepare list for next posting block */
6945                         list_add_tail(&sglq_entry->list, &prep_sgl_list);
6946                         /* enough sgls for non-embed sgl mbox command */
6947                         if (block_cnt == LPFC_NEMBED_MBOX_SGL_CNT) {
6948                                 list_splice_init(&prep_sgl_list,
6949                                                  &blck_sgl_list);
6950                                 post_cnt = block_cnt;
6951                                 block_cnt = 0;
6952                         }
6953                 }
6954                 num_posted++;
6955 
6956                 /* keep track of last sgl's xritag */
6957                 last_xritag = sglq_entry->sli4_xritag;
6958 
6959                 /* end of repost sgl list condition for buffers */
6960                 if (num_posted == total_cnt) {
6961                         if (post_cnt == 0) {
6962                                 list_splice_init(&prep_sgl_list,
6963                                                  &blck_sgl_list);
6964                                 post_cnt = block_cnt;
6965                         } else if (block_cnt == 1) {
6966                                 status = lpfc_sli4_post_sgl(phba,
6967                                                 sglq_entry->phys, 0,
6968                                                 sglq_entry->sli4_xritag);
6969                                 if (!status) {
6970                                         /* successful, put sgl to posted list */
6971                                         list_add_tail(&sglq_entry->list,
6972                                                       &post_sgl_list);
6973                                 } else {
6974                                         /* Failure, put sgl to free list */
6975                                         lpfc_printf_log(phba, KERN_WARNING,
6976                                                 LOG_SLI,
6977                                                 "3159 Failed to post "
6978                                                 "sgl, xritag:x%x\n",
6979                                                 sglq_entry->sli4_xritag);
6980                                         list_add_tail(&sglq_entry->list,
6981                                                       &free_sgl_list);
6982                                         total_cnt--;
6983                                 }
6984                         }
6985                 }
6986 
6987                 /* continue until a nembed page worth of sgls */
6988                 if (post_cnt == 0)
6989                         continue;
6990 
6991                 /* post the buffer list sgls as a block */
6992                 status = lpfc_sli4_post_sgl_list(phba, &blck_sgl_list,
6993                                                  post_cnt);
6994 
6995                 if (!status) {
6996                         /* success, put sgl list to posted sgl list */
6997                         list_splice_init(&blck_sgl_list, &post_sgl_list);
6998                 } else {
6999                         /* Failure, put sgl list to free sgl list */
7000                         sglq_entry_first = list_first_entry(&blck_sgl_list,
7001                                                             struct lpfc_sglq,
7002                                                             list);
7003                         lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
7004                                         "3160 Failed to post sgl-list, "
7005                                         "xritag:x%x-x%x\n",
7006                                         sglq_entry_first->sli4_xritag,
7007                                         (sglq_entry_first->sli4_xritag +
7008                                          post_cnt - 1));
7009                         list_splice_init(&blck_sgl_list, &free_sgl_list);
7010                         total_cnt -= post_cnt;
7011                 }
7012 
7013                 /* don't reset xirtag due to hole in xri block */
7014                 if (block_cnt == 0)
7015                         last_xritag = NO_XRI;
7016 
7017                 /* reset sgl post count for next round of posting */
7018                 post_cnt = 0;
7019         }
7020 
7021         /* free the sgls failed to post */
7022         lpfc_free_sgl_list(phba, &free_sgl_list);
7023 
7024         /* push sgls posted to the available list */
7025         if (!list_empty(&post_sgl_list)) {
7026                 spin_lock_irq(&phba->hbalock);
7027                 spin_lock(&phba->sli4_hba.sgl_list_lock);
7028                 list_splice_init(&post_sgl_list, sgl_list);
7029                 spin_unlock(&phba->sli4_hba.sgl_list_lock);
7030                 spin_unlock_irq(&phba->hbalock);
7031         } else {
7032                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
7033                                 "3161 Failure to post sgl to port.\n");
7034                 return -EIO;
7035         }
7036 
7037         /* return the number of XRIs actually posted */
7038         return total_cnt;
7039 }
7040 
7041 /**
7042  * lpfc_sli4_repost_io_sgl_list - Repost all the allocated nvme buffer sgls
7043  * @phba: pointer to lpfc hba data structure.
7044  *
7045  * This routine walks the list of nvme buffers that have been allocated and
7046  * repost them to the port by using SGL block post. This is needed after a
7047  * pci_function_reset/warm_start or start. The lpfc_hba_down_post_s4 routine
7048  * is responsible for moving all nvme buffers on the lpfc_abts_nvme_sgl_list
7049  * to the lpfc_io_buf_list. If the repost fails, reject all nvme buffers.
7050  *
7051  * Returns: 0 = success, non-zero failure.
7052  **/
7053 static int
7054 lpfc_sli4_repost_io_sgl_list(struct lpfc_hba *phba)
7055 {
7056         LIST_HEAD(post_nblist);
7057         int num_posted, rc = 0;
7058 
7059         /* get all NVME buffers need to repost to a local list */
7060         lpfc_io_buf_flush(phba, &post_nblist);
7061 
7062         /* post the list of nvme buffer sgls to port if available */
7063         if (!list_empty(&post_nblist)) {
7064                 num_posted = lpfc_sli4_post_io_sgl_list(
7065                         phba, &post_nblist, phba->sli4_hba.io_xri_cnt);
7066                 /* failed to post any nvme buffer, return error */
7067                 if (num_posted == 0)
7068                         rc = -EIO;
7069         }
7070         return rc;
7071 }
7072 
7073 static void
7074 lpfc_set_host_data(struct lpfc_hba *phba, LPFC_MBOXQ_t *mbox)
7075 {
7076         uint32_t len;
7077 
7078         len = sizeof(struct lpfc_mbx_set_host_data) -
7079                 sizeof(struct lpfc_sli4_cfg_mhdr);
7080         lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
7081                          LPFC_MBOX_OPCODE_SET_HOST_DATA, len,
7082                          LPFC_SLI4_MBX_EMBED);
7083 
7084         mbox->u.mqe.un.set_host_data.param_id = LPFC_SET_HOST_OS_DRIVER_VERSION;
7085         mbox->u.mqe.un.set_host_data.param_len =
7086                                         LPFC_HOST_OS_DRIVER_VERSION_SIZE;
7087         snprintf(mbox->u.mqe.un.set_host_data.data,
7088                  LPFC_HOST_OS_DRIVER_VERSION_SIZE,
7089                  "Linux %s v"LPFC_DRIVER_VERSION,
7090                  (phba->hba_flag & HBA_FCOE_MODE) ? "FCoE" : "FC");
7091 }
7092 
7093 int
7094 lpfc_post_rq_buffer(struct lpfc_hba *phba, struct lpfc_queue *hrq,
7095                     struct lpfc_queue *drq, int count, int idx)
7096 {
7097         int rc, i;
7098         struct lpfc_rqe hrqe;
7099         struct lpfc_rqe drqe;
7100         struct lpfc_rqb *rqbp;
7101         unsigned long flags;
7102         struct rqb_dmabuf *rqb_buffer;
7103         LIST_HEAD(rqb_buf_list);
7104 
7105         spin_lock_irqsave(&phba->hbalock, flags);
7106         rqbp = hrq->rqbp;
7107         for (i = 0; i < count; i++) {
7108                 /* IF RQ is already full, don't bother */
7109                 if (rqbp->buffer_count + i >= rqbp->entry_count - 1)
7110                         break;
7111                 rqb_buffer = rqbp->rqb_alloc_buffer(phba);
7112                 if (!rqb_buffer)
7113                         break;
7114                 rqb_buffer->hrq = hrq;
7115                 rqb_buffer->drq = drq;
7116                 rqb_buffer->idx = idx;
7117                 list_add_tail(&rqb_buffer->hbuf.list, &rqb_buf_list);
7118         }
7119         while (!list_empty(&rqb_buf_list)) {
7120                 list_remove_head(&rqb_buf_list, rqb_buffer, struct rqb_dmabuf,
7121                                  hbuf.list);
7122 
7123                 hrqe.address_lo = putPaddrLow(rqb_buffer->hbuf.phys);
7124                 hrqe.address_hi = putPaddrHigh(rqb_buffer->hbuf.phys);
7125                 drqe.address_lo = putPaddrLow(rqb_buffer->dbuf.phys);
7126                 drqe.address_hi = putPaddrHigh(rqb_buffer->dbuf.phys);
7127                 rc = lpfc_sli4_rq_put(hrq, drq, &hrqe, &drqe);
7128                 if (rc < 0) {
7129                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7130                                         "6421 Cannot post to HRQ %d: %x %x %x "
7131                                         "DRQ %x %x\n",
7132                                         hrq->queue_id,
7133                                         hrq->host_index,
7134                                         hrq->hba_index,
7135                                         hrq->entry_count,
7136                                         drq->host_index,
7137                                         drq->hba_index);
7138                         rqbp->rqb_free_buffer(phba, rqb_buffer);
7139                 } else {
7140                         list_add_tail(&rqb_buffer->hbuf.list,
7141                                       &rqbp->rqb_buffer_list);
7142                         rqbp->buffer_count++;
7143                 }
7144         }
7145         spin_unlock_irqrestore(&phba->hbalock, flags);
7146         return 1;
7147 }
7148 
7149 /**
7150  * lpfc_sli4_hba_setup - SLI4 device initialization PCI function
7151  * @phba: Pointer to HBA context object.
7152  *
7153  * This function is the main SLI4 device initialization PCI function. This
7154  * function is called by the HBA initialization code, HBA reset code and
7155  * HBA error attention handler code. Caller is not required to hold any
7156  * locks.
7157  **/
7158 int
7159 lpfc_sli4_hba_setup(struct lpfc_hba *phba)
7160 {
7161         int rc, i, cnt, len;
7162         LPFC_MBOXQ_t *mboxq;
7163         struct lpfc_mqe *mqe;
7164         uint8_t *vpd;
7165         uint32_t vpd_size;
7166         uint32_t ftr_rsp = 0;
7167         struct Scsi_Host *shost = lpfc_shost_from_vport(phba->pport);
7168         struct lpfc_vport *vport = phba->pport;
7169         struct lpfc_dmabuf *mp;
7170         struct lpfc_rqb *rqbp;
7171 
7172         /* Perform a PCI function reset to start from clean */
7173         rc = lpfc_pci_function_reset(phba);
7174         if (unlikely(rc))
7175                 return -ENODEV;
7176 
7177         /* Check the HBA Host Status Register for readyness */
7178         rc = lpfc_sli4_post_status_check(phba);
7179         if (unlikely(rc))
7180                 return -ENODEV;
7181         else {
7182                 spin_lock_irq(&phba->hbalock);
7183                 phba->sli.sli_flag |= LPFC_SLI_ACTIVE;
7184                 spin_unlock_irq(&phba->hbalock);
7185         }
7186 
7187         /*
7188          * Allocate a single mailbox container for initializing the
7189          * port.
7190          */
7191         mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
7192         if (!mboxq)
7193                 return -ENOMEM;
7194 
7195         /* Issue READ_REV to collect vpd and FW information. */
7196         vpd_size = SLI4_PAGE_SIZE;
7197         vpd = kzalloc(vpd_size, GFP_KERNEL);
7198         if (!vpd) {
7199                 rc = -ENOMEM;
7200                 goto out_free_mbox;
7201         }
7202 
7203         rc = lpfc_sli4_read_rev(phba, mboxq, vpd, &vpd_size);
7204         if (unlikely(rc)) {
7205                 kfree(vpd);
7206                 goto out_free_mbox;
7207         }
7208 
7209         mqe = &mboxq->u.mqe;
7210         phba->sli_rev = bf_get(lpfc_mbx_rd_rev_sli_lvl, &mqe->un.read_rev);
7211         if (bf_get(lpfc_mbx_rd_rev_fcoe, &mqe->un.read_rev)) {
7212                 phba->hba_flag |= HBA_FCOE_MODE;
7213                 phba->fcp_embed_io = 0; /* SLI4 FC support only */
7214         } else {
7215                 phba->hba_flag &= ~HBA_FCOE_MODE;
7216         }
7217 
7218         if (bf_get(lpfc_mbx_rd_rev_cee_ver, &mqe->un.read_rev) ==
7219                 LPFC_DCBX_CEE_MODE)
7220                 phba->hba_flag |= HBA_FIP_SUPPORT;
7221         else
7222                 phba->hba_flag &= ~HBA_FIP_SUPPORT;
7223 
7224         phba->hba_flag &= ~HBA_IOQ_FLUSH;
7225 
7226         if (phba->sli_rev != LPFC_SLI_REV4) {
7227                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
7228                         "0376 READ_REV Error. SLI Level %d "
7229                         "FCoE enabled %d\n",
7230                         phba->sli_rev, phba->hba_flag & HBA_FCOE_MODE);
7231                 rc = -EIO;
7232                 kfree(vpd);
7233                 goto out_free_mbox;
7234         }
7235 
7236         /*
7237          * Continue initialization with default values even if driver failed
7238          * to read FCoE param config regions, only read parameters if the
7239          * board is FCoE
7240          */
7241         if (phba->hba_flag & HBA_FCOE_MODE &&
7242             lpfc_sli4_read_fcoe_params(phba))
7243                 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_INIT,
7244                         "2570 Failed to read FCoE parameters\n");
7245 
7246         /*
7247          * Retrieve sli4 device physical port name, failure of doing it
7248          * is considered as non-fatal.
7249          */
7250         rc = lpfc_sli4_retrieve_pport_name(phba);
7251         if (!rc)
7252                 lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
7253                                 "3080 Successful retrieving SLI4 device "
7254                                 "physical port name: %s.\n", phba->Port);
7255 
7256         rc = lpfc_sli4_get_ctl_attr(phba);
7257         if (!rc)
7258                 lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
7259                                 "8351 Successful retrieving SLI4 device "
7260                                 "CTL ATTR\n");
7261 
7262         /*
7263          * Evaluate the read rev and vpd data. Populate the driver
7264          * state with the results. If this routine fails, the failure
7265          * is not fatal as the driver will use generic values.
7266          */
7267         rc = lpfc_parse_vpd(phba, vpd, vpd_size);
7268         if (unlikely(!rc)) {
7269                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
7270                                 "0377 Error %d parsing vpd. "
7271                                 "Using defaults.\n", rc);
7272                 rc = 0;
7273         }
7274         kfree(vpd);
7275 
7276         /* Save information as VPD data */
7277         phba->vpd.rev.biuRev = mqe->un.read_rev.first_hw_rev;
7278         phba->vpd.rev.smRev = mqe->un.read_rev.second_hw_rev;
7279 
7280         /*
7281          * This is because first G7 ASIC doesn't support the standard
7282          * 0x5a NVME cmd descriptor type/subtype
7283          */
7284         if ((bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
7285                         LPFC_SLI_INTF_IF_TYPE_6) &&
7286             (phba->vpd.rev.biuRev == LPFC_G7_ASIC_1) &&
7287             (phba->vpd.rev.smRev == 0) &&
7288             (phba->cfg_nvme_embed_cmd == 1))
7289                 phba->cfg_nvme_embed_cmd = 0;
7290 
7291         phba->vpd.rev.endecRev = mqe->un.read_rev.third_hw_rev;
7292         phba->vpd.rev.fcphHigh = bf_get(lpfc_mbx_rd_rev_fcph_high,
7293                                          &mqe->un.read_rev);
7294         phba->vpd.rev.fcphLow = bf_get(lpfc_mbx_rd_rev_fcph_low,
7295                                        &mqe->un.read_rev);
7296         phba->vpd.rev.feaLevelHigh = bf_get(lpfc_mbx_rd_rev_ftr_lvl_high,
7297                                             &mqe->un.read_rev);
7298         phba->vpd.rev.feaLevelLow = bf_get(lpfc_mbx_rd_rev_ftr_lvl_low,
7299                                            &mqe->un.read_rev);
7300         phba->vpd.rev.sli1FwRev = mqe->un.read_rev.fw_id_rev;
7301         memcpy(phba->vpd.rev.sli1FwName, mqe->un.read_rev.fw_name, 16);
7302         phba->vpd.rev.sli2FwRev = mqe->un.read_rev.ulp_fw_id_rev;
7303         memcpy(phba->vpd.rev.sli2FwName, mqe->un.read_rev.ulp_fw_name, 16);
7304         phba->vpd.rev.opFwRev = mqe->un.read_rev.fw_id_rev;
7305         memcpy(phba->vpd.rev.opFwName, mqe->un.read_rev.fw_name, 16);
7306         lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
7307                         "(%d):0380 READ_REV Status x%x "
7308                         "fw_rev:%s fcphHi:%x fcphLo:%x flHi:%x flLo:%x\n",
7309                         mboxq->vport ? mboxq->vport->vpi : 0,
7310                         bf_get(lpfc_mqe_status, mqe),
7311                         phba->vpd.rev.opFwName,
7312                         phba->vpd.rev.fcphHigh, phba->vpd.rev.fcphLow,
7313                         phba->vpd.rev.feaLevelHigh, phba->vpd.rev.feaLevelLow);
7314 
7315         /* Reset the DFT_LUN_Q_DEPTH to (max xri >> 3)  */
7316         rc = (phba->sli4_hba.max_cfg_param.max_xri >> 3);
7317         if (phba->pport->cfg_lun_queue_depth > rc) {
7318                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7319                                 "3362 LUN queue depth changed from %d to %d\n",
7320                                 phba->pport->cfg_lun_queue_depth, rc);
7321                 phba->pport->cfg_lun_queue_depth = rc;
7322         }
7323 
7324         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
7325             LPFC_SLI_INTF_IF_TYPE_0) {
7326                 lpfc_set_features(phba, mboxq, LPFC_SET_UE_RECOVERY);
7327                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
7328                 if (rc == MBX_SUCCESS) {
7329                         phba->hba_flag |= HBA_RECOVERABLE_UE;
7330                         /* Set 1Sec interval to detect UE */
7331                         phba->eratt_poll_interval = 1;
7332                         phba->sli4_hba.ue_to_sr = bf_get(
7333                                         lpfc_mbx_set_feature_UESR,
7334                                         &mboxq->u.mqe.un.set_feature);
7335                         phba->sli4_hba.ue_to_rp = bf_get(
7336                                         lpfc_mbx_set_feature_UERP,
7337                                         &mboxq->u.mqe.un.set_feature);
7338                 }
7339         }
7340 
7341         if (phba->cfg_enable_mds_diags && phba->mds_diags_support) {
7342                 /* Enable MDS Diagnostics only if the SLI Port supports it */
7343                 lpfc_set_features(phba, mboxq, LPFC_SET_MDS_DIAGS);
7344                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
7345                 if (rc != MBX_SUCCESS)
7346                         phba->mds_diags_support = 0;
7347         }
7348 
7349         /*
7350          * Discover the port's supported feature set and match it against the
7351          * hosts requests.
7352          */
7353         lpfc_request_features(phba, mboxq);
7354         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
7355         if (unlikely(rc)) {
7356                 rc = -EIO;
7357                 goto out_free_mbox;
7358         }
7359 
7360         /*
7361          * The port must support FCP initiator mode as this is the
7362          * only mode running in the host.
7363          */
7364         if (!(bf_get(lpfc_mbx_rq_ftr_rsp_fcpi, &mqe->un.req_ftrs))) {
7365                 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI,
7366                                 "0378 No support for fcpi mode.\n");
7367                 ftr_rsp++;
7368         }
7369 
7370         /* Performance Hints are ONLY for FCoE */
7371         if (phba->hba_flag & HBA_FCOE_MODE) {
7372                 if (bf_get(lpfc_mbx_rq_ftr_rsp_perfh, &mqe->un.req_ftrs))
7373                         phba->sli3_options |= LPFC_SLI4_PERFH_ENABLED;
7374                 else
7375                         phba->sli3_options &= ~LPFC_SLI4_PERFH_ENABLED;
7376         }
7377 
7378         /*
7379          * If the port cannot support the host's requested features
7380          * then turn off the global config parameters to disable the
7381          * feature in the driver.  This is not a fatal error.
7382          */
7383         if (phba->sli3_options & LPFC_SLI3_BG_ENABLED) {
7384                 if (!(bf_get(lpfc_mbx_rq_ftr_rsp_dif, &mqe->un.req_ftrs))) {
7385                         phba->cfg_enable_bg = 0;
7386                         phba->sli3_options &= ~LPFC_SLI3_BG_ENABLED;
7387                         ftr_rsp++;
7388                 }
7389         }
7390 
7391         if (phba->max_vpi && phba->cfg_enable_npiv &&
7392             !(bf_get(lpfc_mbx_rq_ftr_rsp_npiv, &mqe->un.req_ftrs)))
7393                 ftr_rsp++;
7394 
7395         if (ftr_rsp) {
7396                 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI,
7397                                 "0379 Feature Mismatch Data: x%08x %08x "
7398                                 "x%x x%x x%x\n", mqe->un.req_ftrs.word2,
7399                                 mqe->un.req_ftrs.word3, phba->cfg_enable_bg,
7400                                 phba->cfg_enable_npiv, phba->max_vpi);
7401                 if (!(bf_get(lpfc_mbx_rq_ftr_rsp_dif, &mqe->un.req_ftrs)))
7402                         phba->cfg_enable_bg = 0;
7403                 if (!(bf_get(lpfc_mbx_rq_ftr_rsp_npiv, &mqe->un.req_ftrs)))
7404                         phba->cfg_enable_npiv = 0;
7405         }
7406 
7407         /* These SLI3 features are assumed in SLI4 */
7408         spin_lock_irq(&phba->hbalock);
7409         phba->sli3_options |= (LPFC_SLI3_NPIV_ENABLED | LPFC_SLI3_HBQ_ENABLED);
7410         spin_unlock_irq(&phba->hbalock);
7411 
7412         /*
7413          * Allocate all resources (xri,rpi,vpi,vfi) now.  Subsequent
7414          * calls depends on these resources to complete port setup.
7415          */
7416         rc = lpfc_sli4_alloc_resource_identifiers(phba);
7417         if (rc) {
7418                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
7419                                 "2920 Failed to alloc Resource IDs "
7420                                 "rc = x%x\n", rc);
7421                 goto out_free_mbox;
7422         }
7423 
7424         lpfc_set_host_data(phba, mboxq);
7425 
7426         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
7427         if (rc) {
7428                 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI,
7429                                 "2134 Failed to set host os driver version %x",
7430                                 rc);
7431         }
7432 
7433         /* Read the port's service parameters. */
7434         rc = lpfc_read_sparam(phba, mboxq, vport->vpi);
7435         if (rc) {
7436                 phba->link_state = LPFC_HBA_ERROR;
7437                 rc = -ENOMEM;
7438                 goto out_free_mbox;
7439         }
7440 
7441         mboxq->vport = vport;
7442         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
7443         mp = (struct lpfc_dmabuf *)mboxq->ctx_buf;
7444         if (rc == MBX_SUCCESS) {
7445                 memcpy(&vport->fc_sparam, mp->virt, sizeof(struct serv_parm));
7446                 rc = 0;
7447         }
7448 
7449         /*
7450          * This memory was allocated by the lpfc_read_sparam routine. Release
7451          * it to the mbuf pool.
7452          */
7453         lpfc_mbuf_free(phba, mp->virt, mp->phys);
7454         kfree(mp);
7455         mboxq->ctx_buf = NULL;
7456         if (unlikely(rc)) {
7457                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
7458                                 "0382 READ_SPARAM command failed "
7459                                 "status %d, mbxStatus x%x\n",
7460                                 rc, bf_get(lpfc_mqe_status, mqe));
7461                 phba->link_state = LPFC_HBA_ERROR;
7462                 rc = -EIO;
7463                 goto out_free_mbox;
7464         }
7465 
7466         lpfc_update_vport_wwn(vport);
7467 
7468         /* Update the fc_host data structures with new wwn. */
7469         fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn);
7470         fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
7471 
7472         /* Create all the SLI4 queues */
7473         rc = lpfc_sli4_queue_create(phba);
7474         if (rc) {
7475                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7476                                 "3089 Failed to allocate queues\n");
7477                 rc = -ENODEV;
7478                 goto out_free_mbox;
7479         }
7480         /* Set up all the queues to the device */
7481         rc = lpfc_sli4_queue_setup(phba);
7482         if (unlikely(rc)) {
7483                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
7484                                 "0381 Error %d during queue setup.\n ", rc);
7485                 goto out_stop_timers;
7486         }
7487         /* Initialize the driver internal SLI layer lists. */
7488         lpfc_sli4_setup(phba);
7489         lpfc_sli4_queue_init(phba);
7490 
7491         /* update host els xri-sgl sizes and mappings */
7492         rc = lpfc_sli4_els_sgl_update(phba);
7493         if (unlikely(rc)) {
7494                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
7495                                 "1400 Failed to update xri-sgl size and "
7496                                 "mapping: %d\n", rc);
7497                 goto out_destroy_queue;
7498         }
7499 
7500         /* register the els sgl pool to the port */
7501         rc = lpfc_sli4_repost_sgl_list(phba, &phba->sli4_hba.lpfc_els_sgl_list,
7502                                        phba->sli4_hba.els_xri_cnt);
7503         if (unlikely(rc < 0)) {
7504                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
7505                                 "0582 Error %d during els sgl post "
7506                                 "operation\n", rc);
7507                 rc = -ENODEV;
7508                 goto out_destroy_queue;
7509         }
7510         phba->sli4_hba.els_xri_cnt = rc;
7511 
7512         if (phba->nvmet_support) {
7513                 /* update host nvmet xri-sgl sizes and mappings */
7514                 rc = lpfc_sli4_nvmet_sgl_update(phba);
7515                 if (unlikely(rc)) {
7516                         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
7517                                         "6308 Failed to update nvmet-sgl size "
7518                                         "and mapping: %d\n", rc);
7519                         goto out_destroy_queue;
7520                 }
7521 
7522                 /* register the nvmet sgl pool to the port */
7523                 rc = lpfc_sli4_repost_sgl_list(
7524                         phba,
7525                         &phba->sli4_hba.lpfc_nvmet_sgl_list,
7526                         phba->sli4_hba.nvmet_xri_cnt);
7527                 if (unlikely(rc < 0)) {
7528                         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
7529                                         "3117 Error %d during nvmet "
7530                                         "sgl post\n", rc);
7531                         rc = -ENODEV;
7532                         goto out_destroy_queue;
7533                 }
7534                 phba->sli4_hba.nvmet_xri_cnt = rc;
7535 
7536                 cnt = phba->cfg_iocb_cnt * 1024;
7537                 /* We need 1 iocbq for every SGL, for IO processing */
7538                 cnt += phba->sli4_hba.nvmet_xri_cnt;
7539         } else {
7540                 /* update host common xri-sgl sizes and mappings */
7541                 rc = lpfc_sli4_io_sgl_update(phba);
7542                 if (unlikely(rc)) {
7543                         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
7544                                         "6082 Failed to update nvme-sgl size "
7545                                         "and mapping: %d\n", rc);
7546                         goto out_destroy_queue;
7547                 }
7548 
7549                 /* register the allocated common sgl pool to the port */
7550                 rc = lpfc_sli4_repost_io_sgl_list(phba);
7551                 if (unlikely(rc)) {
7552                         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
7553                                         "6116 Error %d during nvme sgl post "
7554                                         "operation\n", rc);
7555                         /* Some NVME buffers were moved to abort nvme list */
7556                         /* A pci function reset will repost them */
7557                         rc = -ENODEV;
7558                         goto out_destroy_queue;
7559                 }
7560                 cnt = phba->cfg_iocb_cnt * 1024;
7561         }
7562 
7563         if (!phba->sli.iocbq_lookup) {
7564                 /* Initialize and populate the iocb list per host */
7565                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7566                                 "2821 initialize iocb list %d total %d\n",
7567                                 phba->cfg_iocb_cnt, cnt);
7568                 rc = lpfc_init_iocb_list(phba, cnt);
7569                 if (rc) {
7570                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7571                                         "1413 Failed to init iocb list.\n");
7572                         goto out_destroy_queue;
7573                 }
7574         }
7575 
7576         if (phba->nvmet_support)
7577                 lpfc_nvmet_create_targetport(phba);
7578 
7579         if (phba->nvmet_support && phba->cfg_nvmet_mrq) {
7580                 /* Post initial buffers to all RQs created */
7581                 for (i = 0; i < phba->cfg_nvmet_mrq; i++) {
7582                         rqbp = phba->sli4_hba.nvmet_mrq_hdr[i]->rqbp;
7583                         INIT_LIST_HEAD(&rqbp->rqb_buffer_list);
7584                         rqbp->rqb_alloc_buffer = lpfc_sli4_nvmet_alloc;
7585                         rqbp->rqb_free_buffer = lpfc_sli4_nvmet_free;
7586                         rqbp->entry_count = LPFC_NVMET_RQE_DEF_COUNT;
7587                         rqbp->buffer_count = 0;
7588 
7589                         lpfc_post_rq_buffer(
7590                                 phba, phba->sli4_hba.nvmet_mrq_hdr[i],
7591                                 phba->sli4_hba.nvmet_mrq_data[i],
7592                                 phba->cfg_nvmet_mrq_post, i);
7593                 }
7594         }
7595 
7596         /* Post the rpi header region to the device. */
7597         rc = lpfc_sli4_post_all_rpi_hdrs(phba);
7598         if (unlikely(rc)) {
7599                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
7600                                 "0393 Error %d during rpi post operation\n",
7601                                 rc);
7602                 rc = -ENODEV;
7603                 goto out_destroy_queue;
7604         }
7605         lpfc_sli4_node_prep(phba);
7606 
7607         if (!(phba->hba_flag & HBA_FCOE_MODE)) {
7608                 if ((phba->nvmet_support == 0) || (phba->cfg_nvmet_mrq == 1)) {
7609                         /*
7610                          * The FC Port needs to register FCFI (index 0)
7611                          */
7612                         lpfc_reg_fcfi(phba, mboxq);
7613                         mboxq->vport = phba->pport;
7614                         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
7615                         if (rc != MBX_SUCCESS)
7616                                 goto out_unset_queue;
7617                         rc = 0;
7618                         phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi,
7619                                                 &mboxq->u.mqe.un.reg_fcfi);
7620                 } else {
7621                         /* We are a NVME Target mode with MRQ > 1 */
7622 
7623                         /* First register the FCFI */
7624                         lpfc_reg_fcfi_mrq(phba, mboxq, 0);
7625                         mboxq->vport = phba->pport;
7626                         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
7627                         if (rc != MBX_SUCCESS)
7628                                 goto out_unset_queue;
7629                         rc = 0;
7630                         phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_mrq_fcfi,
7631                                                 &mboxq->u.mqe.un.reg_fcfi_mrq);
7632 
7633                         /* Next register the MRQs */
7634                         lpfc_reg_fcfi_mrq(phba, mboxq, 1);
7635                         mboxq->vport = phba->pport;
7636                         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
7637                         if (rc != MBX_SUCCESS)
7638                                 goto out_unset_queue;
7639                         rc = 0;
7640                 }
7641                 /* Check if the port is configured to be disabled */
7642                 lpfc_sli_read_link_ste(phba);
7643         }
7644 
7645         /* Don't post more new bufs if repost already recovered
7646          * the nvme sgls.
7647          */
7648         if (phba->nvmet_support == 0) {
7649                 if (phba->sli4_hba.io_xri_cnt == 0) {
7650                         len = lpfc_new_io_buf(
7651                                               phba, phba->sli4_hba.io_xri_max);
7652                         if (len == 0) {
7653                                 rc = -ENOMEM;
7654                                 goto out_unset_queue;
7655                         }
7656 
7657                         if (phba->cfg_xri_rebalancing)
7658                                 lpfc_create_multixri_pools(phba);
7659                 }
7660         } else {
7661                 phba->cfg_xri_rebalancing = 0;
7662         }
7663 
7664         /* Allow asynchronous mailbox command to go through */
7665         spin_lock_irq(&phba->hbalock);
7666         phba->sli.sli_flag &= ~LPFC_SLI_ASYNC_MBX_BLK;
7667         spin_unlock_irq(&phba->hbalock);
7668 
7669         /* Post receive buffers to the device */
7670         lpfc_sli4_rb_setup(phba);
7671 
7672         /* Reset HBA FCF states after HBA reset */
7673         phba->fcf.fcf_flag = 0;
7674         phba->fcf.current_rec.flag = 0;
7675 
7676         /* Start the ELS watchdog timer */
7677         mod_timer(&vport->els_tmofunc,
7678                   jiffies + msecs_to_jiffies(1000 * (phba->fc_ratov * 2)));
7679 
7680         /* Start heart beat timer */
7681         mod_timer(&phba->hb_tmofunc,
7682                   jiffies + msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL));
7683         phba->hb_outstanding = 0;
7684         phba->last_completion_time = jiffies;
7685 
7686         /* start eq_delay heartbeat */
7687         if (phba->cfg_auto_imax)
7688                 queue_delayed_work(phba->wq, &phba->eq_delay_work,
7689                                    msecs_to_jiffies(LPFC_EQ_DELAY_MSECS));
7690 
7691         /* Start error attention (ERATT) polling timer */
7692         mod_timer(&phba->eratt_poll,
7693                   jiffies + msecs_to_jiffies(1000 * phba->eratt_poll_interval));
7694 
7695         /* Enable PCIe device Advanced Error Reporting (AER) if configured */
7696         if (phba->cfg_aer_support == 1 && !(phba->hba_flag & HBA_AER_ENABLED)) {
7697                 rc = pci_enable_pcie_error_reporting(phba->pcidev);
7698                 if (!rc) {
7699                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7700                                         "2829 This device supports "
7701                                         "Advanced Error Reporting (AER)\n");
7702                         spin_lock_irq(&phba->hbalock);
7703                         phba->hba_flag |= HBA_AER_ENABLED;
7704                         spin_unlock_irq(&phba->hbalock);
7705                 } else {
7706                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7707                                         "2830 This device does not support "
7708                                         "Advanced Error Reporting (AER)\n");
7709                         phba->cfg_aer_support = 0;
7710                 }
7711                 rc = 0;
7712         }
7713 
7714         /*
7715          * The port is ready, set the host's link state to LINK_DOWN
7716          * in preparation for link interrupts.
7717          */
7718         spin_lock_irq(&phba->hbalock);
7719         phba->link_state = LPFC_LINK_DOWN;
7720 
7721         /* Check if physical ports are trunked */
7722         if (bf_get(lpfc_conf_trunk_port0, &phba->sli4_hba))
7723                 phba->trunk_link.link0.state = LPFC_LINK_DOWN;
7724         if (bf_get(lpfc_conf_trunk_port1, &phba->sli4_hba))
7725                 phba->trunk_link.link1.state = LPFC_LINK_DOWN;
7726         if (bf_get(lpfc_conf_trunk_port2, &phba->sli4_hba))
7727                 phba->trunk_link.link2.state = LPFC_LINK_DOWN;
7728         if (bf_get(lpfc_conf_trunk_port3, &phba->sli4_hba))
7729                 phba->trunk_link.link3.state = LPFC_LINK_DOWN;
7730         spin_unlock_irq(&phba->hbalock);
7731 
7732         /* Arm the CQs and then EQs on device */
7733         lpfc_sli4_arm_cqeq_intr(phba);
7734 
7735         /* Indicate device interrupt mode */
7736         phba->sli4_hba.intr_enable = 1;
7737 
7738         if (!(phba->hba_flag & HBA_FCOE_MODE) &&
7739             (phba->hba_flag & LINK_DISABLED)) {
7740                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_SLI,
7741                                 "3103 Adapter Link is disabled.\n");
7742                 lpfc_down_link(phba, mboxq);
7743                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
7744                 if (rc != MBX_SUCCESS) {
7745                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_SLI,
7746                                         "3104 Adapter failed to issue "
7747                                         "DOWN_LINK mbox cmd, rc:x%x\n", rc);
7748                         goto out_io_buff_free;
7749                 }
7750         } else if (phba->cfg_suppress_link_up == LPFC_INITIALIZE_LINK) {
7751                 /* don't perform init_link on SLI4 FC port loopback test */
7752                 if (!(phba->link_flag & LS_LOOPBACK_MODE)) {
7753                         rc = phba->lpfc_hba_init_link(phba, MBX_NOWAIT);
7754                         if (rc)
7755                                 goto out_io_buff_free;
7756                 }
7757         }
7758         mempool_free(mboxq, phba->mbox_mem_pool);
7759         return rc;
7760 out_io_buff_free:
7761         /* Free allocated IO Buffers */
7762         lpfc_io_free(phba);
7763 out_unset_queue:
7764         /* Unset all the queues set up in this routine when error out */
7765         lpfc_sli4_queue_unset(phba);
7766 out_destroy_queue:
7767         lpfc_free_iocb_list(phba);
7768         lpfc_sli4_queue_destroy(phba);
7769 out_stop_timers:
7770         lpfc_stop_hba_timers(phba);
7771 out_free_mbox:
7772         mempool_free(mboxq, phba->mbox_mem_pool);
7773         return rc;
7774 }
7775 
7776 /**
7777  * lpfc_mbox_timeout - Timeout call back function for mbox timer
7778  * @ptr: context object - pointer to hba structure.
7779  *
7780  * This is the callback function for mailbox timer. The mailbox
7781  * timer is armed when a new mailbox command is issued and the timer
7782  * is deleted when the mailbox complete. The function is called by
7783  * the kernel timer code when a mailbox does not complete within
7784  * expected time. This function wakes up the worker thread to
7785  * process the mailbox timeout and returns. All the processing is
7786  * done by the worker thread function lpfc_mbox_timeout_handler.
7787  **/
7788 void
7789 lpfc_mbox_timeout(struct timer_list *t)
7790 {
7791         struct lpfc_hba  *phba = from_timer(phba, t, sli.mbox_tmo);
7792         unsigned long iflag;
7793         uint32_t tmo_posted;
7794 
7795         spin_lock_irqsave(&phba->pport->work_port_lock, iflag);
7796         tmo_posted = phba->pport->work_port_events & WORKER_MBOX_TMO;
7797         if (!tmo_posted)
7798                 phba->pport->work_port_events |= WORKER_MBOX_TMO;
7799         spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);
7800 
7801         if (!tmo_posted)
7802                 lpfc_worker_wake_up(phba);
7803         return;
7804 }
7805 
7806 /**
7807  * lpfc_sli4_mbox_completions_pending - check to see if any mailbox completions
7808  *                                    are pending
7809  * @phba: Pointer to HBA context object.
7810  *
7811  * This function checks if any mailbox completions are present on the mailbox
7812  * completion queue.
7813  **/
7814 static bool
7815 lpfc_sli4_mbox_completions_pending(struct lpfc_hba *phba)
7816 {
7817 
7818         uint32_t idx;
7819         struct lpfc_queue *mcq;
7820         struct lpfc_mcqe *mcqe;
7821         bool pending_completions = false;
7822         uint8_t qe_valid;
7823 
7824         if (unlikely(!phba) || (phba->sli_rev != LPFC_SLI_REV4))
7825                 return false;
7826 
7827         /* Check for completions on mailbox completion queue */
7828 
7829         mcq = phba->sli4_hba.mbx_cq;
7830         idx = mcq->hba_index;
7831         qe_valid = mcq->qe_valid;
7832         while (bf_get_le32(lpfc_cqe_valid,
7833                (struct lpfc_cqe *)lpfc_sli4_qe(mcq, idx)) == qe_valid) {
7834                 mcqe = (struct lpfc_mcqe *)(lpfc_sli4_qe(mcq, idx));
7835                 if (bf_get_le32(lpfc_trailer_completed, mcqe) &&
7836                     (!bf_get_le32(lpfc_trailer_async, mcqe))) {
7837                         pending_completions = true;
7838                         break;
7839                 }
7840                 idx = (idx + 1) % mcq->entry_count;
7841                 if (mcq->hba_index == idx)
7842                         break;
7843 
7844                 /* if the index wrapped around, toggle the valid bit */
7845                 if (phba->sli4_hba.pc_sli4_params.cqav && !idx)
7846                         qe_valid = (qe_valid) ? 0 : 1;
7847         }
7848         return pending_completions;
7849 
7850 }
7851 
7852 /**
7853  * lpfc_sli4_process_missed_mbox_completions - process mbox completions
7854  *                                            that were missed.
7855  * @phba: Pointer to HBA context object.
7856  *
7857  * For sli4, it is possible to miss an interrupt. As such mbox completions
7858  * maybe missed causing erroneous mailbox timeouts to occur. This function
7859  * checks to see if mbox completions are on the mailbox completion queue
7860  * and will process all the completions associated with the eq for the
7861  * mailbox completion queue.
7862  **/
7863 static bool
7864 lpfc_sli4_process_missed_mbox_completions(struct lpfc_hba *phba)
7865 {
7866         struct lpfc_sli4_hba *sli4_hba = &phba->sli4_hba;
7867         uint32_t eqidx;
7868         struct lpfc_queue *fpeq = NULL;
7869         struct lpfc_queue *eq;
7870         bool mbox_pending;
7871 
7872         if (unlikely(!phba) || (phba->sli_rev != LPFC_SLI_REV4))
7873                 return false;
7874 
7875         /* Find the EQ associated with the mbox CQ */
7876         if (sli4_hba->hdwq) {
7877                 for (eqidx = 0; eqidx < phba->cfg_irq_chann; eqidx++) {
7878                         eq = phba->sli4_hba.hba_eq_hdl[eqidx].eq;
7879                         if (eq && eq->queue_id == sli4_hba->mbx_cq->assoc_qid) {
7880                                 fpeq = eq;
7881                                 break;
7882                         }
7883                 }
7884         }
7885         if (!fpeq)
7886                 return false;
7887 
7888         /* Turn off interrupts from this EQ */
7889 
7890         sli4_hba->sli4_eq_clr_intr(fpeq);
7891 
7892         /* Check to see if a mbox completion is pending */
7893 
7894         mbox_pending = lpfc_sli4_mbox_completions_pending(phba);
7895 
7896         /*
7897          * If a mbox completion is pending, process all the events on EQ
7898          * associated with the mbox completion queue (this could include
7899          * mailbox commands, async events, els commands, receive queue data
7900          * and fcp commands)
7901          */
7902 
7903         if (mbox_pending)
7904                 /* process and rearm the EQ */
7905                 lpfc_sli4_process_eq(phba, fpeq, LPFC_QUEUE_REARM);
7906         else
7907                 /* Always clear and re-arm the EQ */
7908                 sli4_hba->sli4_write_eq_db(phba, fpeq, 0, LPFC_QUEUE_REARM);
7909 
7910         return mbox_pending;
7911 
7912 }
7913 
7914 /**
7915  * lpfc_mbox_timeout_handler - Worker thread function to handle mailbox timeout
7916  * @phba: Pointer to HBA context object.
7917  *
7918  * This function is called from worker thread when a mailbox command times out.
7919  * The caller is not required to hold any locks. This function will reset the
7920  * HBA and recover all the pending commands.
7921  **/
7922 void
7923 lpfc_mbox_timeout_handler(struct lpfc_hba *phba)
7924 {
7925         LPFC_MBOXQ_t *pmbox = phba->sli.mbox_active;
7926         MAILBOX_t *mb = NULL;
7927 
7928         struct lpfc_sli *psli = &phba->sli;
7929 
7930         /* If the mailbox completed, process the completion and return */
7931         if (lpfc_sli4_process_missed_mbox_completions(phba))
7932                 return;
7933 
7934         if (pmbox != NULL)
7935                 mb = &pmbox->u.mb;
7936         /* Check the pmbox pointer first.  There is a race condition
7937          * between the mbox timeout handler getting executed in the
7938          * worklist and the mailbox actually completing. When this
7939          * race condition occurs, the mbox_active will be NULL.
7940          */
7941         spin_lock_irq(&phba->hbalock);
7942         if (pmbox == NULL) {
7943                 lpfc_printf_log(phba, KERN_WARNING,
7944                                 LOG_MBOX | LOG_SLI,
7945                                 "0353 Active Mailbox cleared - mailbox timeout "
7946                                 "exiting\n");
7947                 spin_unlock_irq(&phba->hbalock);
7948                 return;
7949         }
7950 
7951         /* Mbox cmd <mbxCommand> timeout */
7952         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
7953                         "0310 Mailbox command x%x timeout Data: x%x x%x x%px\n",
7954                         mb->mbxCommand,
7955                         phba->pport->port_state,
7956                         phba->sli.sli_flag,
7957                         phba->sli.mbox_active);
7958         spin_unlock_irq(&phba->hbalock);
7959 
7960         /* Setting state unknown so lpfc_sli_abort_iocb_ring
7961          * would get IOCB_ERROR from lpfc_sli_issue_iocb, allowing
7962          * it to fail all outstanding SCSI IO.
7963          */
7964         spin_lock_irq(&phba->pport->work_port_lock);
7965         phba->pport->work_port_events &= ~WORKER_MBOX_TMO;
7966         spin_unlock_irq(&phba->pport->work_port_lock);
7967         spin_lock_irq(&phba->hbalock);
7968         phba->link_state = LPFC_LINK_UNKNOWN;
7969         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
7970         spin_unlock_irq(&phba->hbalock);
7971 
7972         lpfc_sli_abort_fcp_rings(phba);
7973 
7974         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
7975                         "0345 Resetting board due to mailbox timeout\n");
7976 
7977         /* Reset the HBA device */
7978         lpfc_reset_hba(phba);
7979 }
7980 
7981 /**
7982  * lpfc_sli_issue_mbox_s3 - Issue an SLI3 mailbox command to firmware
7983  * @phba: Pointer to HBA context object.
7984  * @pmbox: Pointer to mailbox object.
7985  * @flag: Flag indicating how the mailbox need to be processed.
7986  *
7987  * This function is called by discovery code and HBA management code
7988  * to submit a mailbox command to firmware with SLI-3 interface spec. This
7989  * function gets the hbalock to protect the data structures.
7990  * The mailbox command can be submitted in polling mode, in which case
7991  * this function will wait in a polling loop for the completion of the
7992  * mailbox.
7993  * If the mailbox is submitted in no_wait mode (not polling) the
7994  * function will submit the command and returns immediately without waiting
7995  * for the mailbox completion. The no_wait is supported only when HBA
7996  * is in SLI2/SLI3 mode - interrupts are enabled.
7997  * The SLI interface allows only one mailbox pending at a time. If the
7998  * mailbox is issued in polling mode and there is already a mailbox
7999  * pending, then the function will return an error. If the mailbox is issued
8000  * in NO_WAIT mode and there is a mailbox pending already, the function
8001  * will return MBX_BUSY after queuing the mailbox into mailbox queue.
8002  * The sli layer owns the mailbox object until the completion of mailbox
8003  * command if this function return MBX_BUSY or MBX_SUCCESS. For all other
8004  * return codes the caller owns the mailbox command after the return of
8005  * the function.
8006  **/
8007 static int
8008 lpfc_sli_issue_mbox_s3(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox,
8009                        uint32_t flag)
8010 {
8011         MAILBOX_t *mbx;
8012         struct lpfc_sli *psli = &phba->sli;
8013         uint32_t status, evtctr;
8014         uint32_t ha_copy, hc_copy;
8015         int i;
8016         unsigned long timeout;
8017         unsigned long drvr_flag = 0;
8018         uint32_t word0, ldata;
8019         void __iomem *to_slim;
8020         int processing_queue = 0;
8021 
8022         spin_lock_irqsave(&phba->hbalock, drvr_flag);
8023         if (!pmbox) {
8024                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
8025                 /* processing mbox queue from intr_handler */
8026                 if (unlikely(psli->sli_flag & LPFC_SLI_ASYNC_MBX_BLK)) {
8027                         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
8028                         return MBX_SUCCESS;
8029                 }
8030                 processing_queue = 1;
8031                 pmbox = lpfc_mbox_get(phba);
8032                 if (!pmbox) {
8033                         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
8034                         return MBX_SUCCESS;
8035                 }
8036         }
8037 
8038         if (pmbox->mbox_cmpl && pmbox->mbox_cmpl != lpfc_sli_def_mbox_cmpl &&
8039                 pmbox->mbox_cmpl != lpfc_sli_wake_mbox_wait) {
8040                 if(!pmbox->vport) {
8041                         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
8042                         lpfc_printf_log(phba, KERN_ERR,
8043                                         LOG_MBOX | LOG_VPORT,
8044                                         "1806 Mbox x%x failed. No vport\n",
8045                                         pmbox->u.mb.mbxCommand);
8046                         dump_stack();
8047                         goto out_not_finished;
8048                 }
8049         }
8050 
8051         /* If the PCI channel is in offline state, do not post mbox. */
8052         if (unlikely(pci_channel_offline(phba->pcidev))) {
8053                 spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
8054                 goto out_not_finished;
8055         }
8056 
8057         /* If HBA has a deferred error attention, fail the iocb. */
8058         if (unlikely(phba->hba_flag & DEFER_ERATT)) {
8059                 spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
8060                 goto out_not_finished;
8061         }
8062 
8063         psli = &phba->sli;
8064 
8065         mbx = &pmbox->u.mb;
8066         status = MBX_SUCCESS;
8067 
8068         if (phba->link_state == LPFC_HBA_ERROR) {
8069                 spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
8070 
8071                 /* Mbox command <mbxCommand> cannot issue */
8072                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
8073                                 "(%d):0311 Mailbox command x%x cannot "
8074                                 "issue Data: x%x x%x\n",
8075                                 pmbox->vport ? pmbox->vport->vpi : 0,
8076                                 pmbox->u.mb.mbxCommand, psli->sli_flag, flag);
8077                 goto out_not_finished;
8078         }
8079 
8080         if (mbx->mbxCommand != MBX_KILL_BOARD && flag & MBX_NOWAIT) {
8081                 if (lpfc_readl(phba->HCregaddr, &hc_copy) ||
8082                         !(hc_copy & HC_MBINT_ENA)) {
8083                         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
8084                         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
8085                                 "(%d):2528 Mailbox command x%x cannot "
8086                                 "issue Data: x%x x%x\n",
8087                                 pmbox->vport ? pmbox->vport->vpi : 0,
8088                                 pmbox->u.mb.mbxCommand, psli->sli_flag, flag);
8089                         goto out_not_finished;
8090                 }
8091         }
8092 
8093         if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) {
8094                 /* Polling for a mbox command when another one is already active
8095                  * is not allowed in SLI. Also, the driver must have established
8096                  * SLI2 mode to queue and process multiple mbox commands.
8097                  */
8098 
8099                 if (flag & MBX_POLL) {
8100                         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
8101 
8102                         /* Mbox command <mbxCommand> cannot issue */
8103                         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
8104                                         "(%d):2529 Mailbox command x%x "
8105                                         "cannot issue Data: x%x x%x\n",
8106                                         pmbox->vport ? pmbox->vport->vpi : 0,
8107                                         pmbox->u.mb.mbxCommand,
8108                                         psli->sli_flag, flag);
8109                         goto out_not_finished;
8110                 }
8111 
8112                 if (!(psli->sli_flag & LPFC_SLI_ACTIVE)) {
8113                         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
8114                         /* Mbox command <mbxCommand> cannot issue */
8115                         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
8116                                         "(%d):2530 Mailbox command x%x "
8117                                         "cannot issue Data: x%x x%x\n",
8118                                         pmbox->vport ? pmbox->vport->vpi : 0,
8119                                         pmbox->u.mb.mbxCommand,
8120                                         psli->sli_flag, flag);
8121                         goto out_not_finished;
8122                 }
8123 
8124                 /* Another mailbox command is still being processed, queue this
8125                  * command to be processed later.
8126                  */
8127                 lpfc_mbox_put(phba, pmbox);
8128 
8129                 /* Mbox cmd issue - BUSY */
8130                 lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
8131                                 "(%d):0308 Mbox cmd issue - BUSY Data: "
8132                                 "x%x x%x x%x x%x\n",
8133                                 pmbox->vport ? pmbox->vport->vpi : 0xffffff,
8134                                 mbx->mbxCommand,
8135                                 phba->pport ? phba->pport->port_state : 0xff,
8136                                 psli->sli_flag, flag);
8137 
8138                 psli->slistat.mbox_busy++;
8139                 spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
8140 
8141                 if (pmbox->vport) {
8142                         lpfc_debugfs_disc_trc(pmbox->vport,
8143                                 LPFC_DISC_TRC_MBOX_VPORT,
8144                                 "MBOX Bsy vport:  cmd:x%x mb:x%x x%x",
8145                                 (uint32_t)mbx->mbxCommand,
8146                                 mbx->un.varWords[0], mbx->un.varWords[1]);
8147                 }
8148                 else {
8149                         lpfc_debugfs_disc_trc(phba->pport,
8150                                 LPFC_DISC_TRC_MBOX,
8151                                 "MBOX Bsy:        cmd:x%x mb:x%x x%x",
8152                                 (uint32_t)mbx->mbxCommand,
8153                                 mbx->un.varWords[0], mbx->un.varWords[1]);
8154                 }
8155 
8156                 return MBX_BUSY;
8157         }
8158 
8159         psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE;
8160 
8161         /* If we are not polling, we MUST be in SLI2 mode */
8162         if (flag != MBX_POLL) {
8163                 if (!(psli->sli_flag & LPFC_SLI_ACTIVE) &&
8164                     (mbx->mbxCommand != MBX_KILL_BOARD)) {
8165                         psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
8166                         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
8167                         /* Mbox command <mbxCommand> cannot issue */
8168                         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
8169                                         "(%d):2531 Mailbox command x%x "
8170                                         "cannot issue Data: x%x x%x\n",
8171                                         pmbox->vport ? pmbox->vport->vpi : 0,
8172                                         pmbox->u.mb.mbxCommand,
8173                                         psli->sli_flag, flag);
8174                         goto out_not_finished;
8175                 }
8176                 /* timeout active mbox command */
8177                 timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, pmbox) *
8178                                            1000);
8179                 mod_timer(&psli->mbox_tmo, jiffies + timeout);
8180         }
8181 
8182         /* Mailbox cmd <cmd> issue */
8183         lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
8184                         "(%d):0309 Mailbox cmd x%x issue Data: x%x x%x "
8185                         "x%x\n",
8186                         pmbox->vport ? pmbox->vport->vpi : 0,
8187                         mbx->mbxCommand,
8188                         phba->pport ? phba->pport->port_state : 0xff,
8189                         psli->sli_flag, flag);
8190 
8191         if (mbx->mbxCommand != MBX_HEARTBEAT) {
8192                 if (pmbox->vport) {
8193                         lpfc_debugfs_disc_trc(pmbox->vport,
8194                                 LPFC_DISC_TRC_MBOX_VPORT,
8195                                 "MBOX Send vport: cmd:x%x mb:x%x x%x",
8196                                 (uint32_t)mbx->mbxCommand,
8197                                 mbx->un.varWords[0], mbx->un.varWords[1]);
8198                 }
8199                 else {
8200                         lpfc_debugfs_disc_trc(phba->pport,
8201                                 LPFC_DISC_TRC_MBOX,
8202                                 "MBOX Send:       cmd:x%x mb:x%x x%x",
8203                                 (uint32_t)mbx->mbxCommand,
8204                                 mbx->un.varWords[0], mbx->un.varWords[1]);
8205                 }
8206         }
8207 
8208         psli->slistat.mbox_cmd++;
8209         evtctr = psli->slistat.mbox_event;
8210 
8211         /* next set own bit for the adapter and copy over command word */
8212         mbx->mbxOwner = OWN_CHIP;
8213 
8214         if (psli->sli_flag & LPFC_SLI_ACTIVE) {
8215                 /* Populate mbox extension offset word. */
8216                 if (pmbox->in_ext_byte_len || pmbox->out_ext_byte_len) {
8217                         *(((uint32_t *)mbx) + pmbox->mbox_offset_word)
8218                                 = (uint8_t *)phba->mbox_ext
8219                                   - (uint8_t *)phba->mbox;
8220                 }
8221 
8222                 /* Copy the mailbox extension data */
8223                 if (pmbox->in_ext_byte_len && pmbox->ctx_buf) {
8224                         lpfc_sli_pcimem_bcopy(pmbox->ctx_buf,
8225                                               (uint8_t *)phba->mbox_ext,
8226                                               pmbox->in_ext_byte_len);
8227                 }
8228                 /* Copy command data to host SLIM area */
8229                 lpfc_sli_pcimem_bcopy(mbx, phba->mbox, MAILBOX_CMD_SIZE);
8230         } else {
8231                 /* Populate mbox extension offset word. */
8232                 if (pmbox->in_ext_byte_len || pmbox->out_ext_byte_len)
8233                         *(((uint32_t *)mbx) + pmbox->mbox_offset_word)
8234                                 = MAILBOX_HBA_EXT_OFFSET;
8235 
8236                 /* Copy the mailbox extension data */
8237                 if (pmbox->in_ext_byte_len && pmbox->ctx_buf)
8238                         lpfc_memcpy_to_slim(phba->MBslimaddr +
8239                                 MAILBOX_HBA_EXT_OFFSET,
8240                                 pmbox->ctx_buf, pmbox->in_ext_byte_len);
8241 
8242                 if (mbx->mbxCommand == MBX_CONFIG_PORT)
8243                         /* copy command data into host mbox for cmpl */
8244                         lpfc_sli_pcimem_bcopy(mbx, phba->mbox,
8245                                               MAILBOX_CMD_SIZE);
8246 
8247                 /* First copy mbox command data to HBA SLIM, skip past first
8248                    word */
8249                 to_slim = phba->MBslimaddr + sizeof (uint32_t);
8250                 lpfc_memcpy_to_slim(to_slim, &mbx->un.varWords[0],
8251                             MAILBOX_CMD_SIZE - sizeof (uint32_t));
8252 
8253                 /* Next copy over first word, with mbxOwner set */
8254                 ldata = *((uint32_t *)mbx);
8255                 to_slim = phba->MBslimaddr;
8256                 writel(ldata, to_slim);
8257                 readl(to_slim); /* flush */
8258 
8259                 if (mbx->mbxCommand == MBX_CONFIG_PORT)
8260                         /* switch over to host mailbox */
8261                         psli->sli_flag |= LPFC_SLI_ACTIVE;
8262         }
8263 
8264         wmb();
8265 
8266         switch (flag) {
8267         case MBX_NOWAIT:
8268                 /* Set up reference to mailbox command */
8269                 psli->mbox_active = pmbox;
8270                 /* Interrupt board to do it */
8271                 writel(CA_MBATT, phba->CAregaddr);
8272                 readl(phba->CAregaddr); /* flush */
8273                 /* Don't wait for it to finish, just return */
8274                 break;
8275 
8276         case MBX_POLL:
8277                 /* Set up null reference to mailbox command */
8278                 psli->mbox_active = NULL;
8279                 /* Interrupt board to do it */
8280                 writel(CA_MBATT, phba->CAregaddr);
8281                 readl(phba->CAregaddr); /* flush */
8282 
8283                 if (psli->sli_flag & LPFC_SLI_ACTIVE) {
8284                         /* First read mbox status word */
8285                         word0 = *((uint32_t *)phba->mbox);
8286                         word0 = le32_to_cpu(word0);
8287                 } else {
8288                         /* First read mbox status word */
8289                         if (lpfc_readl(phba->MBslimaddr, &word0)) {
8290                                 spin_unlock_irqrestore(&phba->hbalock,
8291                                                        drvr_flag);
8292                                 goto out_not_finished;
8293                         }
8294                 }
8295 
8296                 /* Read the HBA Host Attention Register */
8297                 if (lpfc_readl(phba->HAregaddr, &ha_copy)) {
8298                         spin_unlock_irqrestore(&phba->hbalock,
8299                                                        drvr_flag);
8300                         goto out_not_finished;
8301                 }
8302                 timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, pmbox) *
8303                                                         1000) + jiffies;
8304                 i = 0;
8305                 /* Wait for command to complete */
8306                 while (((word0 & OWN_CHIP) == OWN_CHIP) ||
8307                        (!(ha_copy & HA_MBATT) &&
8308                         (phba->link_state > LPFC_WARM_START))) {
8309                         if (time_after(jiffies, timeout)) {
8310                                 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
8311                                 spin_unlock_irqrestore(&phba->hbalock,
8312                                                        drvr_flag);
8313                                 goto out_not_finished;
8314                         }
8315 
8316                         /* Check if we took a mbox interrupt while we were
8317                            polling */
8318                         if (((word0 & OWN_CHIP) != OWN_CHIP)
8319                             && (evtctr != psli->slistat.mbox_event))
8320                                 break;
8321 
8322                         if (i++ > 10) {
8323                                 spin_unlock_irqrestore(&phba->hbalock,
8324                                                        drvr_flag);
8325                                 msleep(1);
8326                                 spin_lock_irqsave(&phba->hbalock, drvr_flag);
8327                         }
8328 
8329                         if (psli->sli_flag & LPFC_SLI_ACTIVE) {
8330                                 /* First copy command data */
8331                                 word0 = *((uint32_t *)phba->mbox);
8332                                 word0 = le32_to_cpu(word0);
8333                                 if (mbx->mbxCommand == MBX_CONFIG_PORT) {
8334                                         MAILBOX_t *slimmb;
8335                                         uint32_t slimword0;
8336                                         /* Check real SLIM for any errors */
8337                                         slimword0 = readl(phba->MBslimaddr);
8338                                         slimmb = (MAILBOX_t *) & slimword0;
8339                                         if (((slimword0 & OWN_CHIP) != OWN_CHIP)
8340                                             && slimmb->mbxStatus) {
8341                                                 psli->sli_flag &=
8342                                                     ~LPFC_SLI_ACTIVE;
8343                                                 word0 = slimword0;
8344                                         }
8345                                 }
8346                         } else {
8347                                 /* First copy command data */
8348                                 word0 = readl(phba->MBslimaddr);
8349                         }
8350                         /* Read the HBA Host Attention Register */
8351                         if (lpfc_readl(phba->HAregaddr, &ha_copy)) {
8352                                 spin_unlock_irqrestore(&phba->hbalock,
8353                                                        drvr_flag);
8354                                 goto out_not_finished;
8355                         }
8356                 }
8357 
8358                 if (psli->sli_flag & LPFC_SLI_ACTIVE) {
8359                         /* copy results back to user */
8360                         lpfc_sli_pcimem_bcopy(phba->mbox, mbx,
8361                                                 MAILBOX_CMD_SIZE);
8362                         /* Copy the mailbox extension data */
8363                         if (pmbox->out_ext_byte_len && pmbox->ctx_buf) {
8364                                 lpfc_sli_pcimem_bcopy(phba->mbox_ext,
8365                                                       pmbox->ctx_buf,
8366                                                       pmbox->out_ext_byte_len);
8367                         }
8368                 } else {
8369                         /* First copy command data */
8370                         lpfc_memcpy_from_slim(mbx, phba->MBslimaddr,
8371                                                 MAILBOX_CMD_SIZE);
8372                         /* Copy the mailbox extension data */
8373                         if (pmbox->out_ext_byte_len && pmbox->ctx_buf) {
8374                                 lpfc_memcpy_from_slim(
8375                                         pmbox->ctx_buf,
8376                                         phba->MBslimaddr +
8377                                         MAILBOX_HBA_EXT_OFFSET,
8378                                         pmbox->out_ext_byte_len);
8379                         }
8380                 }
8381 
8382                 writel(HA_MBATT, phba->HAregaddr);
8383                 readl(phba->HAregaddr); /* flush */
8384 
8385                 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
8386                 status = mbx->mbxStatus;
8387         }
8388 
8389         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
8390         return status;
8391 
8392 out_not_finished:
8393         if (processing_queue) {
8394                 pmbox->u.mb.mbxStatus = MBX_NOT_FINISHED;
8395                 lpfc_mbox_cmpl_put(phba, pmbox);
8396         }
8397         return MBX_NOT_FINISHED;
8398 }
8399 
8400 /**
8401  * lpfc_sli4_async_mbox_block - Block posting SLI4 asynchronous mailbox command
8402  * @phba: Pointer to HBA context object.
8403  *
8404  * The function blocks the posting of SLI4 asynchronous mailbox commands from
8405  * the driver internal pending mailbox queue. It will then try to wait out the
8406  * possible outstanding mailbox command before return.
8407  *
8408  * Returns:
8409  *      0 - the outstanding mailbox command completed; otherwise, the wait for
8410  *      the outstanding mailbox command timed out.
8411  **/
8412 static int
8413 lpfc_sli4_async_mbox_block(struct lpfc_hba *phba)
8414 {
8415         struct lpfc_sli *psli = &phba->sli;
8416         int rc = 0;
8417         unsigned long timeout = 0;
8418 
8419         /* Mark the asynchronous mailbox command posting as blocked */
8420         spin_lock_irq(&phba->hbalock);
8421         psli->sli_flag |= LPFC_SLI_ASYNC_MBX_BLK;
8422         /* Determine how long we might wait for the active mailbox
8423          * command to be gracefully completed by firmware.
8424          */
8425         if (phba->sli.mbox_active)
8426                 timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba,
8427                                                 phba->sli.mbox_active) *
8428                                                 1000) + jiffies;
8429         spin_unlock_irq(&phba->hbalock);
8430 
8431         /* Make sure the mailbox is really active */
8432         if (timeout)
8433                 lpfc_sli4_process_missed_mbox_completions(phba);
8434 
8435         /* Wait for the outstnading mailbox command to complete */
8436         while (phba->sli.mbox_active) {
8437                 /* Check active mailbox complete status every 2ms */
8438                 msleep(2);
8439                 if (time_after(jiffies, timeout)) {
8440                         /* Timeout, marked the outstanding cmd not complete */
8441                         rc = 1;
8442                         break;
8443                 }
8444         }
8445 
8446         /* Can not cleanly block async mailbox command, fails it */
8447         if (rc) {
8448                 spin_lock_irq(&phba->hbalock);
8449                 psli->sli_flag &= ~LPFC_SLI_ASYNC_MBX_BLK;
8450                 spin_unlock_irq(&phba->hbalock);
8451         }
8452         return rc;
8453 }
8454 
8455 /**
8456  * lpfc_sli4_async_mbox_unblock - Block posting SLI4 async mailbox command
8457  * @phba: Pointer to HBA context object.
8458  *
8459  * The function unblocks and resume posting of SLI4 asynchronous mailbox
8460  * commands from the driver internal pending mailbox queue. It makes sure
8461  * that there is no outstanding mailbox command before resuming posting
8462  * asynchronous mailbox commands. If, for any reason, there is outstanding
8463  * mailbox command, it will try to wait it out before resuming asynchronous
8464  * mailbox command posting.
8465  **/
8466 static void
8467 lpfc_sli4_async_mbox_unblock(struct lpfc_hba *phba)
8468 {
8469         struct lpfc_sli *psli = &phba->sli;
8470 
8471         spin_lock_irq(&phba->hbalock);
8472         if (!(psli->sli_flag & LPFC_SLI_ASYNC_MBX_BLK)) {
8473                 /* Asynchronous mailbox posting is not blocked, do nothing */
8474                 spin_unlock_irq(&phba->hbalock);
8475                 return;
8476         }
8477 
8478         /* Outstanding synchronous mailbox command is guaranteed to be done,
8479          * successful or timeout, after timing-out the outstanding mailbox
8480          * command shall always be removed, so just unblock posting async
8481          * mailbox command and resume
8482          */
8483         psli->sli_flag &= ~LPFC_SLI_ASYNC_MBX_BLK;
8484         spin_unlock_irq(&phba->hbalock);
8485 
8486         /* wake up worker thread to post asynchronlous mailbox command */
8487         lpfc_worker_wake_up(phba);
8488 }
8489 
8490 /**
8491  * lpfc_sli4_wait_bmbx_ready - Wait for bootstrap mailbox register ready
8492  * @phba: Pointer to HBA context object.
8493  * @mboxq: Pointer to mailbox object.
8494  *
8495  * The function waits for the bootstrap mailbox register ready bit from
8496  * port for twice the regular mailbox command timeout value.
8497  *
8498  *      0 - no timeout on waiting for bootstrap mailbox register ready.
8499  *      MBXERR_ERROR - wait for bootstrap mailbox register timed out.
8500  **/
8501 static int
8502 lpfc_sli4_wait_bmbx_ready(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
8503 {
8504         uint32_t db_ready;
8505         unsigned long timeout;
8506         struct lpfc_register bmbx_reg;
8507 
8508         timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, mboxq)
8509                                    * 1000) + jiffies;
8510 
8511         do {
8512                 bmbx_reg.word0 = readl(phba->sli4_hba.BMBXregaddr);
8513                 db_ready = bf_get(lpfc_bmbx_rdy, &bmbx_reg);
8514                 if (!db_ready)
8515                         mdelay(2);
8516 
8517                 if (time_after(jiffies, timeout))
8518                         return MBXERR_ERROR;
8519         } while (!db_ready);
8520 
8521         return 0;
8522 }
8523 
8524 /**
8525  * lpfc_sli4_post_sync_mbox - Post an SLI4 mailbox to the bootstrap mailbox
8526  * @phba: Pointer to HBA context object.
8527  * @mboxq: Pointer to mailbox object.
8528  *
8529  * The function posts a mailbox to the port.  The mailbox is expected
8530  * to be comletely filled in and ready for the port to operate on it.
8531  * This routine executes a synchronous completion operation on the
8532  * mailbox by polling for its completion.
8533  *
8534  * The caller must not be holding any locks when calling this routine.
8535  *
8536  * Returns:
8537  *      MBX_SUCCESS - mailbox posted successfully
8538  *      Any of the MBX error values.
8539  **/
8540 static int
8541 lpfc_sli4_post_sync_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
8542 {
8543         int rc = MBX_SUCCESS;
8544         unsigned long iflag;
8545         uint32_t mcqe_status;
8546         uint32_t mbx_cmnd;
8547         struct lpfc_sli *psli = &phba->sli;
8548         struct lpfc_mqe *mb = &mboxq->u.mqe;
8549         struct lpfc_bmbx_create *mbox_rgn;
8550         struct dma_address *dma_address;
8551 
8552         /*
8553          * Only one mailbox can be active to the bootstrap mailbox region
8554          * at a time and there is no queueing provided.
8555          */
8556         spin_lock_irqsave(&phba->hbalock, iflag);
8557         if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) {
8558                 spin_unlock_irqrestore(&phba->hbalock, iflag);
8559                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
8560                                 "(%d):2532 Mailbox command x%x (x%x/x%x) "
8561                                 "cannot issue Data: x%x x%x\n",
8562                                 mboxq->vport ? mboxq->vport->vpi : 0,
8563                                 mboxq->u.mb.mbxCommand,
8564                                 lpfc_sli_config_mbox_subsys_get(phba, mboxq),
8565                                 lpfc_sli_config_mbox_opcode_get(phba, mboxq),
8566                                 psli->sli_flag, MBX_POLL);
8567                 return MBXERR_ERROR;
8568         }
8569         /* The server grabs the token and owns it until release */
8570         psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE;
8571         phba->sli.mbox_active = mboxq;
8572         spin_unlock_irqrestore(&phba->hbalock, iflag);
8573 
8574         /* wait for bootstrap mbox register for readyness */
8575         rc = lpfc_sli4_wait_bmbx_ready(phba, mboxq);
8576         if (rc)
8577                 goto exit;
8578         /*
8579          * Initialize the bootstrap memory region to avoid stale data areas
8580          * in the mailbox post.  Then copy the caller's mailbox contents to
8581          * the bmbx mailbox region.
8582          */
8583         mbx_cmnd = bf_get(lpfc_mqe_command, mb);
8584         memset(phba->sli4_hba.bmbx.avirt, 0, sizeof(struct lpfc_bmbx_create));
8585         lpfc_sli4_pcimem_bcopy(mb, phba->sli4_hba.bmbx.avirt,
8586                                sizeof(struct lpfc_mqe));
8587 
8588         /* Post the high mailbox dma address to the port and wait for ready. */
8589         dma_address = &phba->sli4_hba.bmbx.dma_address;
8590         writel(dma_address->addr_hi, phba->sli4_hba.BMBXregaddr);
8591 
8592         /* wait for bootstrap mbox register for hi-address write done */
8593         rc = lpfc_sli4_wait_bmbx_ready(phba, mboxq);
8594         if (rc)
8595                 goto exit;
8596 
8597         /* Post the low mailbox dma address to the port. */
8598         writel(dma_address->addr_lo, phba->sli4_hba.BMBXregaddr);
8599 
8600         /* wait for bootstrap mbox register for low address write done */
8601         rc = lpfc_sli4_wait_bmbx_ready(phba, mboxq);
8602         if (rc)
8603                 goto exit;
8604 
8605         /*
8606          * Read the CQ to ensure the mailbox has completed.
8607          * If so, update the mailbox status so that the upper layers
8608          * can complete the request normally.
8609          */
8610         lpfc_sli4_pcimem_bcopy(phba->sli4_hba.bmbx.avirt, mb,
8611                                sizeof(struct lpfc_mqe));
8612         mbox_rgn = (struct lpfc_bmbx_create *) phba->sli4_hba.bmbx.avirt;
8613         lpfc_sli4_pcimem_bcopy(&mbox_rgn->mcqe, &mboxq->mcqe,
8614                                sizeof(struct lpfc_mcqe));
8615         mcqe_status = bf_get(lpfc_mcqe_status, &mbox_rgn->mcqe);
8616         /*
8617          * When the CQE status indicates a failure and the mailbox status
8618          * indicates success then copy the CQE status into the mailbox status
8619          * (and prefix it with x4000).
8620          */
8621         if (mcqe_status != MB_CQE_STATUS_SUCCESS) {
8622                 if (bf_get(lpfc_mqe_status, mb) == MBX_SUCCESS)
8623                         bf_set(lpfc_mqe_status, mb,
8624                                (LPFC_MBX_ERROR_RANGE | mcqe_status));
8625                 rc = MBXERR_ERROR;
8626         } else
8627                 lpfc_sli4_swap_str(phba, mboxq);
8628 
8629         lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
8630                         "(%d):0356 Mailbox cmd x%x (x%x/x%x) Status x%x "
8631                         "Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x x%x x%x"
8632                         " x%x x%x CQ: x%x x%x x%x x%x\n",
8633                         mboxq->vport ? mboxq->vport->vpi : 0, mbx_cmnd,
8634                         lpfc_sli_config_mbox_subsys_get(phba, mboxq),
8635                         lpfc_sli_config_mbox_opcode_get(phba, mboxq),
8636                         bf_get(lpfc_mqe_status, mb),
8637                         mb->un.mb_words[0], mb->un.mb_words[1],
8638                         mb->un.mb_words[2], mb->un.mb_words[3],
8639                         mb->un.mb_words[4], mb->un.mb_words[5],
8640                         mb->un.mb_words[6], mb->un.mb_words[7],
8641                         mb->un.mb_words[8], mb->un.mb_words[9],
8642                         mb->un.mb_words[10], mb->un.mb_words[11],
8643                         mb->un.mb_words[12], mboxq->mcqe.word0,
8644                         mboxq->mcqe.mcqe_tag0,  mboxq->mcqe.mcqe_tag1,
8645                         mboxq->mcqe.trailer);
8646 exit:
8647         /* We are holding the token, no needed for lock when release */
8648         spin_lock_irqsave(&phba->hbalock, iflag);
8649         psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
8650         phba->sli.mbox_active = NULL;
8651         spin_unlock_irqrestore(&phba->hbalock, iflag);
8652         return rc;
8653 }
8654 
8655 /**
8656  * lpfc_sli_issue_mbox_s4 - Issue an SLI4 mailbox command to firmware
8657  * @phba: Pointer to HBA context object.
8658  * @pmbox: Pointer to mailbox object.
8659  * @flag: Flag indicating how the mailbox need to be processed.
8660  *
8661  * This function is called by discovery code and HBA management code to submit
8662  * a mailbox command to firmware with SLI-4 interface spec.
8663  *
8664  * Return codes the caller owns the mailbox command after the return of the
8665  * function.
8666  **/
8667 static int
8668 lpfc_sli_issue_mbox_s4(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
8669                        uint32_t flag)
8670 {
8671         struct lpfc_sli *psli = &phba->sli;
8672         unsigned long iflags;
8673         int rc;
8674 
8675         /* dump from issue mailbox command if setup */
8676         lpfc_idiag_mbxacc_dump_issue_mbox(phba, &mboxq->u.mb);
8677 
8678         rc = lpfc_mbox_dev_check(phba);
8679         if (unlikely(rc)) {
8680                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
8681                                 "(%d):2544 Mailbox command x%x (x%x/x%x) "
8682                                 "cannot issue Data: x%x x%x\n",
8683                                 mboxq->vport ? mboxq->vport->vpi : 0,
8684                                 mboxq->u.mb.mbxCommand,
8685                                 lpfc_sli_config_mbox_subsys_get(phba, mboxq),
8686                                 lpfc_sli_config_mbox_opcode_get(phba, mboxq),
8687                                 psli->sli_flag, flag);
8688                 goto out_not_finished;
8689         }
8690 
8691         /* Detect polling mode and jump to a handler */
8692         if (!phba->sli4_hba.intr_enable) {
8693                 if (flag == MBX_POLL)
8694                         rc = lpfc_sli4_post_sync_mbox(phba, mboxq);
8695                 else
8696                         rc = -EIO;
8697                 if (rc != MBX_SUCCESS)
8698                         lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI,
8699                                         "(%d):2541 Mailbox command x%x "
8700                                         "(x%x/x%x) failure: "
8701                                         "mqe_sta: x%x mcqe_sta: x%x/x%x "
8702                                         "Data: x%x x%x\n,",
8703                                         mboxq->vport ? mboxq->vport->vpi : 0,
8704                                         mboxq->u.mb.mbxCommand,
8705                                         lpfc_sli_config_mbox_subsys_get(phba,
8706                                                                         mboxq),
8707                                         lpfc_sli_config_mbox_opcode_get(phba,
8708                                                                         mboxq),
8709                                         bf_get(lpfc_mqe_status, &mboxq->u.mqe),
8710                                         bf_get(lpfc_mcqe_status, &mboxq->mcqe),
8711                                         bf_get(lpfc_mcqe_ext_status,
8712                                                &mboxq->mcqe),
8713                                         psli->sli_flag, flag);
8714                 return rc;
8715         } else if (flag == MBX_POLL) {
8716                 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI,
8717                                 "(%d):2542 Try to issue mailbox command "
8718                                 "x%x (x%x/x%x) synchronously ahead of async "
8719                                 "mailbox command queue: x%x x%x\n",
8720                                 mboxq->vport ? mboxq->vport->vpi : 0,
8721                                 mboxq->u.mb.mbxCommand,
8722                                 lpfc_sli_config_mbox_subsys_get(phba, mboxq),
8723                                 lpfc_sli_config_mbox_opcode_get(phba, mboxq),
8724                                 psli->sli_flag, flag);
8725                 /* Try to block the asynchronous mailbox posting */
8726                 rc = lpfc_sli4_async_mbox_block(phba);
8727                 if (!rc) {
8728                         /* Successfully blocked, now issue sync mbox cmd */
8729                         rc = lpfc_sli4_post_sync_mbox(phba, mboxq);
8730                         if (rc != MBX_SUCCESS)
8731                                 lpfc_printf_log(phba, KERN_WARNING,
8732                                         LOG_MBOX | LOG_SLI,
8733                                         "(%d):2597 Sync Mailbox command "
8734                                         "x%x (x%x/x%x) failure: "
8735                                         "mqe_sta: x%x mcqe_sta: x%x/x%x "
8736                                         "Data: x%x x%x\n,",
8737                                         mboxq->vport ? mboxq->vport->vpi : 0,
8738                                         mboxq->u.mb.mbxCommand,
8739                                         lpfc_sli_config_mbox_subsys_get(phba,
8740                                                                         mboxq),
8741                                         lpfc_sli_config_mbox_opcode_get(phba,
8742                                                                         mboxq),
8743                                         bf_get(lpfc_mqe_status, &mboxq->u.mqe),
8744                                         bf_get(lpfc_mcqe_status, &mboxq->mcqe),
8745                                         bf_get(lpfc_mcqe_ext_status,
8746                                                &mboxq->mcqe),
8747                                         psli->sli_flag, flag);
8748                         /* Unblock the async mailbox posting afterward */
8749                         lpfc_sli4_async_mbox_unblock(phba);
8750                 }
8751                 return rc;
8752         }
8753 
8754         /* Now, interrupt mode asynchrous mailbox command */
8755         rc = lpfc_mbox_cmd_check(phba, mboxq);
8756         if (rc) {
8757                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
8758                                 "(%d):2543 Mailbox command x%x (x%x/x%x) "
8759                                 "cannot issue Data: x%x x%x\n",
8760                                 mboxq->vport ? mboxq->vport->vpi : 0,
8761                                 mboxq->u.mb.mbxCommand,
8762                                 lpfc_sli_config_mbox_subsys_get(phba, mboxq),
8763                                 lpfc_sli_config_mbox_opcode_get(phba, mboxq),
8764                                 psli->sli_flag, flag);
8765                 goto out_not_finished;
8766         }
8767 
8768         /* Put the mailbox command to the driver internal FIFO */
8769         psli->slistat.mbox_busy++;
8770         spin_lock_irqsave(&phba->hbalock, iflags);
8771         lpfc_mbox_put(phba, mboxq);
8772         spin_unlock_irqrestore(&phba->hbalock, iflags);
8773         lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
8774                         "(%d):0354 Mbox cmd issue - Enqueue Data: "
8775                         "x%x (x%x/x%x) x%x x%x x%x\n",
8776                         mboxq->vport ? mboxq->vport->vpi : 0xffffff,
8777                         bf_get(lpfc_mqe_command, &mboxq->u.mqe),
8778                         lpfc_sli_config_mbox_subsys_get(phba, mboxq),
8779                         lpfc_sli_config_mbox_opcode_get(phba, mboxq),
8780                         phba->pport->port_state,
8781                         psli->sli_flag, MBX_NOWAIT);
8782         /* Wake up worker thread to transport mailbox command from head */
8783         lpfc_worker_wake_up(phba);
8784 
8785         return MBX_BUSY;
8786 
8787 out_not_finished:
8788         return MBX_NOT_FINISHED;
8789 }
8790 
8791 /**
8792  * lpfc_sli4_post_async_mbox - Post an SLI4 mailbox command to device
8793  * @phba: Pointer to HBA context object.
8794  *
8795  * This function is called by worker thread to send a mailbox command to
8796  * SLI4 HBA firmware.
8797  *
8798  **/
8799 int
8800 lpfc_sli4_post_async_mbox(struct lpfc_hba *phba)
8801 {
8802         struct lpfc_sli *psli = &phba->sli;
8803         LPFC_MBOXQ_t *mboxq;
8804         int rc = MBX_SUCCESS;
8805         unsigned long iflags;
8806         struct lpfc_mqe *mqe;
8807         uint32_t mbx_cmnd;
8808 
8809         /* Check interrupt mode before post async mailbox command */
8810         if (unlikely(!phba->sli4_hba.intr_enable))
8811                 return MBX_NOT_FINISHED;
8812 
8813         /* Check for mailbox command service token */
8814         spin_lock_irqsave(&phba->hbalock, iflags);
8815         if (unlikely(psli->sli_flag & LPFC_SLI_ASYNC_MBX_BLK)) {
8816                 spin_unlock_irqrestore(&phba->hbalock, iflags);
8817                 return MBX_NOT_FINISHED;
8818         }
8819         if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) {
8820                 spin_unlock_irqrestore(&phba->hbalock, iflags);
8821                 return MBX_NOT_FINISHED;
8822         }
8823         if (unlikely(phba->sli.mbox_active)) {
8824                 spin_unlock_irqrestore(&phba->hbalock, iflags);
8825                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
8826                                 "0384 There is pending active mailbox cmd\n");
8827                 return MBX_NOT_FINISHED;
8828         }
8829         /* Take the mailbox command service token */
8830         psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE;
8831 
8832         /* Get the next mailbox command from head of queue */
8833         mboxq = lpfc_mbox_get(phba);
8834 
8835         /* If no more mailbox command waiting for post, we're done */
8836         if (!mboxq) {
8837                 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
8838                 spin_unlock_irqrestore(&phba->hbalock, iflags);
8839                 return MBX_SUCCESS;
8840         }
8841         phba->sli.mbox_active = mboxq;
8842         spin_unlock_irqrestore(&phba->hbalock, iflags);
8843 
8844         /* Check device readiness for posting mailbox command */
8845         rc = lpfc_mbox_dev_check(phba);
8846         if (unlikely(rc))
8847                 /* Driver clean routine will clean up pending mailbox */
8848                 goto out_not_finished;
8849 
8850         /* Prepare the mbox command to be posted */
8851         mqe = &mboxq->u.mqe;
8852         mbx_cmnd = bf_get(lpfc_mqe_command, mqe);
8853 
8854         /* Start timer for the mbox_tmo and log some mailbox post messages */
8855         mod_timer(&psli->mbox_tmo, (jiffies +
8856                   msecs_to_jiffies(1000 * lpfc_mbox_tmo_val(phba, mboxq))));
8857 
8858         lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
8859                         "(%d):0355 Mailbox cmd x%x (x%x/x%x) issue Data: "
8860                         "x%x x%x\n",
8861                         mboxq->vport ? mboxq->vport->vpi : 0, mbx_cmnd,
8862                         lpfc_sli_config_mbox_subsys_get(phba, mboxq),
8863                         lpfc_sli_config_mbox_opcode_get(phba, mboxq),
8864                         phba->pport->port_state, psli->sli_flag);
8865 
8866         if (mbx_cmnd != MBX_HEARTBEAT) {
8867                 if (mboxq->vport) {
8868                         lpfc_debugfs_disc_trc(mboxq->vport,
8869                                 LPFC_DISC_TRC_MBOX_VPORT,
8870                                 "MBOX Send vport: cmd:x%x mb:x%x x%x",
8871                                 mbx_cmnd, mqe->un.mb_words[0],
8872                                 mqe->un.mb_words[1]);
8873                 } else {
8874                         lpfc_debugfs_disc_trc(phba->pport,
8875                                 LPFC_DISC_TRC_MBOX,
8876                                 "MBOX Send: cmd:x%x mb:x%x x%x",
8877                                 mbx_cmnd, mqe->un.mb_words[0],
8878                                 mqe->un.mb_words[1]);
8879                 }
8880         }
8881         psli->slistat.mbox_cmd++;
8882 
8883         /* Post the mailbox command to the port */
8884         rc = lpfc_sli4_mq_put(phba->sli4_hba.mbx_wq, mqe);
8885         if (rc != MBX_SUCCESS) {
8886                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
8887                                 "(%d):2533 Mailbox command x%x (x%x/x%x) "
8888                                 "cannot issue Data: x%x x%x\n",
8889                                 mboxq->vport ? mboxq->vport->vpi : 0,
8890                                 mboxq->u.mb.mbxCommand,
8891                                 lpfc_sli_config_mbox_subsys_get(phba, mboxq),
8892                                 lpfc_sli_config_mbox_opcode_get(phba, mboxq),
8893                                 psli->sli_flag, MBX_NOWAIT);
8894                 goto out_not_finished;
8895         }
8896 
8897         return rc;
8898 
8899 out_not_finished:
8900         spin_lock_irqsave(&phba->hbalock, iflags);
8901         if (phba->sli.mbox_active) {
8902                 mboxq->u.mb.mbxStatus = MBX_NOT_FINISHED;
8903                 __lpfc_mbox_cmpl_put(phba, mboxq);
8904                 /* Release the token */
8905                 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
8906                 phba->sli.mbox_active = NULL;
8907         }
8908         spin_unlock_irqrestore(&phba->hbalock, iflags);
8909 
8910         return MBX_NOT_FINISHED;
8911 }
8912 
8913 /**
8914  * lpfc_sli_issue_mbox - Wrapper func for issuing mailbox command
8915  * @phba: Pointer to HBA context object.
8916  * @pmbox: Pointer to mailbox object.
8917  * @flag: Flag indicating how the mailbox need to be processed.
8918  *
8919  * This routine wraps the actual SLI3 or SLI4 mailbox issuing routine from
8920  * the API jump table function pointer from the lpfc_hba struct.
8921  *
8922  * Return codes the caller owns the mailbox command after the return of the
8923  * function.
8924  **/
8925 int
8926 lpfc_sli_issue_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag)
8927 {
8928         return phba->lpfc_sli_issue_mbox(phba, pmbox, flag);
8929 }
8930 
8931 /**
8932  * lpfc_mbox_api_table_setup - Set up mbox api function jump table
8933  * @phba: The hba struct for which this call is being executed.
8934  * @dev_grp: The HBA PCI-Device group number.
8935  *
8936  * This routine sets up the mbox interface API function jump table in @phba
8937  * struct.
8938  * Returns: 0 - success, -ENODEV - failure.
8939  **/
8940 int
8941 lpfc_mbox_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
8942 {
8943 
8944         switch (dev_grp) {
8945         case LPFC_PCI_DEV_LP:
8946                 phba->lpfc_sli_issue_mbox = lpfc_sli_issue_mbox_s3;
8947                 phba->lpfc_sli_handle_slow_ring_event =
8948                                 lpfc_sli_handle_slow_ring_event_s3;
8949                 phba->lpfc_sli_hbq_to_firmware = lpfc_sli_hbq_to_firmware_s3;
8950                 phba->lpfc_sli_brdrestart = lpfc_sli_brdrestart_s3;
8951                 phba->lpfc_sli_brdready = lpfc_sli_brdready_s3;
8952                 break;
8953         case LPFC_PCI_DEV_OC:
8954                 phba->lpfc_sli_issue_mbox = lpfc_sli_issue_mbox_s4;
8955                 phba->lpfc_sli_handle_slow_ring_event =
8956                                 lpfc_sli_handle_slow_ring_event_s4;
8957                 phba->lpfc_sli_hbq_to_firmware = lpfc_sli_hbq_to_firmware_s4;
8958                 phba->lpfc_sli_brdrestart = lpfc_sli_brdrestart_s4;
8959                 phba->lpfc_sli_brdready = lpfc_sli_brdready_s4;
8960                 break;
8961         default:
8962                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8963                                 "1420 Invalid HBA PCI-device group: 0x%x\n",
8964                                 dev_grp);
8965                 return -ENODEV;
8966                 break;
8967         }
8968         return 0;
8969 }
8970 
8971 /**
8972  * __lpfc_sli_ringtx_put - Add an iocb to the txq
8973  * @phba: Pointer to HBA context object.
8974  * @pring: Pointer to driver SLI ring object.
8975  * @piocb: Pointer to address of newly added command iocb.
8976  *
8977  * This function is called with hbalock held to add a command
8978  * iocb to the txq when SLI layer cannot submit the command iocb
8979  * to the ring.
8980  **/
8981 void
8982 __lpfc_sli_ringtx_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
8983                     struct lpfc_iocbq *piocb)
8984 {
8985         lockdep_assert_held(&phba->hbalock);
8986         /* Insert the caller's iocb in the txq tail for later processing. */
8987         list_add_tail(&piocb->list, &pring->txq);
8988 }
8989 
8990 /**
8991  * lpfc_sli_next_iocb - Get the next iocb in the txq
8992  * @phba: Pointer to HBA context object.
8993  * @pring: Pointer to driver SLI ring object.
8994  * @piocb: Pointer to address of newly added command iocb.
8995  *
8996  * This function is called with hbalock held before a new
8997  * iocb is submitted to the firmware. This function checks
8998  * txq to flush the iocbs in txq to Firmware before
8999  * submitting new iocbs to the Firmware.
9000  * If there are iocbs in the txq which need to be submitted
9001  * to firmware, lpfc_sli_next_iocb returns the first element
9002  * of the txq after dequeuing it from txq.
9003  * If there is no iocb in the txq then the function will return
9004  * *piocb and *piocb is set to NULL. Caller needs to check
9005  * *piocb to find if there are more commands in the txq.
9006  **/
9007 static struct lpfc_iocbq *
9008 lpfc_sli_next_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
9009                    struct lpfc_iocbq **piocb)
9010 {
9011         struct lpfc_iocbq * nextiocb;
9012 
9013         lockdep_assert_held(&phba->hbalock);
9014 
9015         nextiocb = lpfc_sli_ringtx_get(phba, pring);
9016         if (!nextiocb) {
9017                 nextiocb = *piocb;
9018                 *piocb = NULL;
9019         }
9020 
9021         return nextiocb;
9022 }
9023 
9024 /**
9025  * __lpfc_sli_issue_iocb_s3 - SLI3 device lockless ver of lpfc_sli_issue_iocb
9026  * @phba: Pointer to HBA context object.
9027  * @ring_number: SLI ring number to issue iocb on.
9028  * @piocb: Pointer to command iocb.
9029  * @flag: Flag indicating if this command can be put into txq.
9030  *
9031  * __lpfc_sli_issue_iocb_s3 is used by other functions in the driver to issue
9032  * an iocb command to an HBA with SLI-3 interface spec. If the PCI slot is
9033  * recovering from error state, if HBA is resetting or if LPFC_STOP_IOCB_EVENT
9034  * flag is turned on, the function returns IOCB_ERROR. When the link is down,
9035  * this function allows only iocbs for posting buffers. This function finds
9036  * next available slot in the command ring and posts the command to the
9037  * available slot and writes the port attention register to request HBA start
9038  * processing new iocb. If there is no slot available in the ring and
9039  * flag & SLI_IOCB_RET_IOCB is set, the new iocb is added to the txq, otherwise
9040  * the function returns IOCB_BUSY.
9041  *
9042  * This function is called with hbalock held. The function will return success
9043  * after it successfully submit the iocb to firmware or after adding to the
9044  * txq.
9045  **/
9046 static int
9047 __lpfc_sli_issue_iocb_s3(struct lpfc_hba *phba, uint32_t ring_number,
9048                     struct lpfc_iocbq *piocb, uint32_t flag)
9049 {
9050         struct lpfc_iocbq *nextiocb;
9051         IOCB_t *iocb;
9052         struct lpfc_sli_ring *pring = &phba->sli.sli3_ring[ring_number];
9053 
9054         lockdep_assert_held(&phba->hbalock);
9055 
9056         if (piocb->iocb_cmpl && (!piocb->vport) &&
9057            (piocb->iocb.ulpCommand != CMD_ABORT_XRI_CN) &&
9058            (piocb->iocb.ulpCommand != CMD_CLOSE_XRI_CN)) {
9059                 lpfc_printf_log(phba, KERN_ERR,
9060                                 LOG_SLI | LOG_VPORT,
9061                                 "1807 IOCB x%x failed. No vport\n",
9062                                 piocb->iocb.ulpCommand);
9063                 dump_stack();
9064                 return IOCB_ERROR;
9065         }
9066 
9067 
9068         /* If the PCI channel is in offline state, do not post iocbs. */
9069         if (unlikely(pci_channel_offline(phba->pcidev)))
9070                 return IOCB_ERROR;
9071 
9072         /* If HBA has a deferred error attention, fail the iocb. */
9073         if (unlikely(phba->hba_flag & DEFER_ERATT))
9074                 return IOCB_ERROR;
9075 
9076         /*
9077          * We should never get an IOCB if we are in a < LINK_DOWN state
9078          */
9079         if (unlikely(phba->link_state < LPFC_LINK_DOWN))
9080                 return IOCB_ERROR;
9081 
9082         /*
9083          * Check to see if we are blocking IOCB processing because of a
9084          * outstanding event.
9085          */
9086         if (unlikely(pring->flag & LPFC_STOP_IOCB_EVENT))
9087                 goto iocb_busy;
9088 
9089         if (unlikely(phba->link_state == LPFC_LINK_DOWN)) {
9090                 /*
9091                  * Only CREATE_XRI, CLOSE_XRI, and QUE_RING_BUF
9092                  * can be issued if the link is not up.
9093                  */
9094                 switch (piocb->iocb.ulpCommand) {
9095                 case CMD_GEN_REQUEST64_CR:
9096                 case CMD_GEN_REQUEST64_CX:
9097                         if (!(phba->sli.sli_flag & LPFC_MENLO_MAINT) ||
9098                                 (piocb->iocb.un.genreq64.w5.hcsw.Rctl !=
9099                                         FC_RCTL_DD_UNSOL_CMD) ||
9100                                 (piocb->iocb.un.genreq64.w5.hcsw.Type !=
9101                                         MENLO_TRANSPORT_TYPE))
9102 
9103                                 goto iocb_busy;
9104                         break;
9105                 case CMD_QUE_RING_BUF_CN:
9106                 case CMD_QUE_RING_BUF64_CN:
9107                         /*
9108                          * For IOCBs, like QUE_RING_BUF, that have no rsp ring
9109                          * completion, iocb_cmpl MUST be 0.
9110                          */
9111                         if (piocb->iocb_cmpl)
9112                                 piocb->iocb_cmpl = NULL;
9113                         /*FALLTHROUGH*/
9114                 case CMD_CREATE_XRI_CR:
9115                 case CMD_CLOSE_XRI_CN:
9116                 case CMD_CLOSE_XRI_CX:
9117                         break;
9118                 default:
9119                         goto iocb_busy;
9120                 }
9121 
9122         /*
9123          * For FCP commands, we must be in a state where we can process link
9124          * attention events.
9125          */
9126         } else if (unlikely(pring->ringno == LPFC_FCP_RING &&
9127                             !(phba->sli.sli_flag & LPFC_PROCESS_LA))) {
9128                 goto iocb_busy;
9129         }
9130 
9131         while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) &&
9132                (nextiocb = lpfc_sli_next_iocb(phba, pring, &piocb)))
9133                 lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb);
9134 
9135         if (iocb)
9136                 lpfc_sli_update_ring(phba, pring);
9137         else
9138                 lpfc_sli_update_full_ring(phba, pring);
9139 
9140         if (!piocb)
9141                 return IOCB_SUCCESS;
9142 
9143         goto out_busy;
9144 
9145  iocb_busy:
9146         pring->stats.iocb_cmd_delay++;
9147 
9148  out_busy:
9149 
9150         if (!(flag & SLI_IOCB_RET_IOCB)) {
9151                 __lpfc_sli_ringtx_put(phba, pring, piocb);
9152                 return IOCB_SUCCESS;
9153         }
9154 
9155         return IOCB_BUSY;
9156 }
9157 
9158 /**
9159  * lpfc_sli4_bpl2sgl - Convert the bpl/bde to a sgl.
9160  * @phba: Pointer to HBA context object.
9161  * @piocb: Pointer to command iocb.
9162  * @sglq: Pointer to the scatter gather queue object.
9163  *
9164  * This routine converts the bpl or bde that is in the IOCB
9165  * to a sgl list for the sli4 hardware. The physical address
9166  * of the bpl/bde is converted back to a virtual address.
9167  * If the IOCB contains a BPL then the list of BDE's is
9168  * converted to sli4_sge's. If the IOCB contains a single
9169  * BDE then it is converted to a single sli_sge.
9170  * The IOCB is still in cpu endianess so the contents of
9171  * the bpl can be used without byte swapping.
9172  *
9173  * Returns valid XRI = Success, NO_XRI = Failure.
9174 **/
9175 static uint16_t
9176 lpfc_sli4_bpl2sgl(struct lpfc_hba *phba, struct lpfc_iocbq *piocbq,
9177                 struct lpfc_sglq *sglq)
9178 {
9179         uint16_t xritag = NO_XRI;
9180         struct ulp_bde64 *bpl = NULL;
9181         struct ulp_bde64 bde;
9182         struct sli4_sge *sgl  = NULL;
9183         struct lpfc_dmabuf *dmabuf;
9184         IOCB_t *icmd;
9185         int numBdes = 0;
9186         int i = 0;
9187         uint32_t offset = 0; /* accumulated offset in the sg request list */
9188         int inbound = 0; /* number of sg reply entries inbound from firmware */
9189 
9190         if (!piocbq || !sglq)
9191                 return xritag;
9192 
9193         sgl  = (struct sli4_sge *)sglq->sgl;
9194         icmd = &piocbq->iocb;
9195         if (icmd->ulpCommand == CMD_XMIT_BLS_RSP64_CX)
9196                 return sglq->sli4_xritag;
9197         if (icmd->un.genreq64.bdl.bdeFlags == BUFF_TYPE_BLP_64) {
9198                 numBdes = icmd->un.genreq64.bdl.bdeSize /
9199                                 sizeof(struct ulp_bde64);
9200                 /* The addrHigh and addrLow fields within the IOCB
9201                  * have not been byteswapped yet so there is no
9202                  * need to swap them back.
9203                  */
9204                 if (piocbq->context3)
9205                         dmabuf = (struct lpfc_dmabuf *)piocbq->context3;
9206                 else
9207                         return xritag;
9208 
9209                 bpl  = (struct ulp_bde64 *)dmabuf->virt;
9210                 if (!bpl)
9211                         return xritag;
9212 
9213                 for (i = 0; i < numBdes; i++) {
9214                         /* Should already be byte swapped. */
9215                         sgl->addr_hi = bpl->addrHigh;
9216                         sgl->addr_lo = bpl->addrLow;
9217 
9218                         sgl->word2 = le32_to_cpu(sgl->word2);
9219                         if ((i+1) == numBdes)
9220                                 bf_set(lpfc_sli4_sge_last, sgl, 1);
9221                         else
9222                                 bf_set(lpfc_sli4_sge_last, sgl, 0);
9223                         /* swap the size field back to the cpu so we
9224                          * can assign it to the sgl.
9225                          */
9226                         bde.tus.w = le32_to_cpu(bpl->tus.w);
9227                         sgl->sge_len = cpu_to_le32(bde.tus.f.bdeSize);
9228                         /* The offsets in the sgl need to be accumulated
9229                          * separately for the request and reply lists.
9230                          * The request is always first, the reply follows.
9231                          */
9232                         if (piocbq->iocb.ulpCommand == CMD_GEN_REQUEST64_CR) {
9233                                 /* add up the reply sg entries */
9234                                 if (bpl->tus.f.bdeFlags == BUFF_TYPE_BDE_64I)
9235                                         inbound++;
9236                                 /* first inbound? reset the offset */
9237                                 if (inbound == 1)
9238                                         offset = 0;
9239                                 bf_set(lpfc_sli4_sge_offset, sgl, offset);
9240                                 bf_set(lpfc_sli4_sge_type, sgl,
9241                                         LPFC_SGE_TYPE_DATA);
9242                                 offset += bde.tus.f.bdeSize;
9243                         }
9244                         sgl->word2 = cpu_to_le32(sgl->word2);
9245                         bpl++;
9246                         sgl++;
9247                 }
9248         } else if (icmd->un.genreq64.bdl.bdeFlags == BUFF_TYPE_BDE_64) {
9249                         /* The addrHigh and addrLow fields of the BDE have not
9250                          * been byteswapped yet so they need to be swapped
9251                          * before putting them in the sgl.
9252                          */
9253                         sgl->addr_hi =
9254                                 cpu_to_le32(icmd->un.genreq64.bdl.addrHigh);
9255                         sgl->addr_lo =
9256                                 cpu_to_le32(icmd->un.genreq64.bdl.addrLow);
9257                         sgl->word2 = le32_to_cpu(sgl->word2);
9258                         bf_set(lpfc_sli4_sge_last, sgl, 1);
9259                         sgl->word2 = cpu_to_le32(sgl->word2);
9260                         sgl->sge_len =
9261                                 cpu_to_le32(icmd->un.genreq64.bdl.bdeSize);
9262         }
9263         return sglq->sli4_xritag;
9264 }
9265 
9266 /**
9267  * lpfc_sli_iocb2wqe - Convert the IOCB to a work queue entry.
9268  * @phba: Pointer to HBA context object.
9269  * @piocb: Pointer to command iocb.
9270  * @wqe: Pointer to the work queue entry.
9271  *
9272  * This routine converts the iocb command to its Work Queue Entry
9273  * equivalent. The wqe pointer should not have any fields set when
9274  * this routine is called because it will memcpy over them.
9275  * This routine does not set the CQ_ID or the WQEC bits in the
9276  * wqe.
9277  *
9278  * Returns: 0 = Success, IOCB_ERROR = Failure.
9279  **/
9280 static int
9281 lpfc_sli4_iocb2wqe(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq,
9282                 union lpfc_wqe128 *wqe)
9283 {
9284         uint32_t xmit_len = 0, total_len = 0;
9285         uint8_t ct = 0;
9286         uint32_t fip;
9287         uint32_t abort_tag;
9288         uint8_t command_type = ELS_COMMAND_NON_FIP;
9289         uint8_t cmnd;
9290         uint16_t xritag;
9291         uint16_t abrt_iotag;
9292         struct lpfc_iocbq *abrtiocbq;
9293         struct ulp_bde64 *bpl = NULL;
9294         uint32_t els_id = LPFC_ELS_ID_DEFAULT;
9295         int numBdes, i;
9296         struct ulp_bde64 bde;
9297         struct lpfc_nodelist *ndlp;
9298         uint32_t *pcmd;
9299         uint32_t if_type;
9300 
9301         fip = phba->hba_flag & HBA_FIP_SUPPORT;
9302         /* The fcp commands will set command type */
9303         if (iocbq->iocb_flag &  LPFC_IO_FCP)
9304                 command_type = FCP_COMMAND;
9305         else if (fip && (iocbq->iocb_flag & LPFC_FIP_ELS_ID_MASK))
9306                 command_type = ELS_COMMAND_FIP;
9307         else
9308                 command_type = ELS_COMMAND_NON_FIP;
9309 
9310         if (phba->fcp_embed_io)
9311                 memset(wqe, 0, sizeof(union lpfc_wqe128));
9312         /* Some of the fields are in the right position already */
9313         memcpy(wqe, &iocbq->iocb, sizeof(union lpfc_wqe));
9314         /* The ct field has moved so reset */
9315         wqe->generic.wqe_com.word7 = 0;
9316         wqe->generic.wqe_com.word10 = 0;
9317 
9318         abort_tag = (uint32_t) iocbq->iotag;
9319         xritag = iocbq->sli4_xritag;
9320         /* words0-2 bpl convert bde */
9321         if (iocbq->iocb.un.genreq64.bdl.bdeFlags == BUFF_TYPE_BLP_64) {
9322                 numBdes = iocbq->iocb.un.genreq64.bdl.bdeSize /
9323                                 sizeof(struct ulp_bde64);
9324                 bpl  = (struct ulp_bde64 *)
9325                         ((struct lpfc_dmabuf *)iocbq->context3)->virt;
9326                 if (!bpl)
9327                         return IOCB_ERROR;
9328 
9329                 /* Should already be byte swapped. */
9330                 wqe->generic.bde.addrHigh =  le32_to_cpu(bpl->addrHigh);
9331                 wqe->generic.bde.addrLow =  le32_to_cpu(bpl->addrLow);
9332                 /* swap the size field back to the cpu so we
9333                  * can assign it to the sgl.
9334                  */
9335                 wqe->generic.bde.tus.w  = le32_to_cpu(bpl->tus.w);
9336                 xmit_len = wqe->generic.bde.tus.f.bdeSize;
9337                 total_len = 0;
9338                 for (i = 0; i < numBdes; i++) {
9339                         bde.tus.w  = le32_to_cpu(bpl[i].tus.w);
9340                         total_len += bde.tus.f.bdeSize;
9341                 }
9342         } else
9343                 xmit_len = iocbq->iocb.un.fcpi64.bdl.bdeSize;
9344 
9345         iocbq->iocb.ulpIoTag = iocbq->iotag;
9346         cmnd = iocbq->iocb.ulpCommand;
9347 
9348         switch (iocbq->iocb.ulpCommand) {
9349         case CMD_ELS_REQUEST64_CR:
9350                 if (iocbq->iocb_flag & LPFC_IO_LIBDFC)
9351                         ndlp = iocbq->context_un.ndlp;
9352                 else
9353                         ndlp = (struct lpfc_nodelist *)iocbq->context1;
9354                 if (!iocbq->iocb.ulpLe) {
9355                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
9356                                 "2007 Only Limited Edition cmd Format"
9357                                 " supported 0x%x\n",
9358                                 iocbq->iocb.ulpCommand);
9359                         return IOCB_ERROR;
9360                 }
9361 
9362                 wqe->els_req.payload_len = xmit_len;
9363                 /* Els_reguest64 has a TMO */
9364                 bf_set(wqe_tmo, &wqe->els_req.wqe_com,
9365                         iocbq->iocb.ulpTimeout);
9366                 /* Need a VF for word 4 set the vf bit*/
9367                 bf_set(els_req64_vf, &wqe->els_req, 0);
9368                 /* And a VFID for word 12 */
9369                 bf_set(els_req64_vfid, &wqe->els_req, 0);
9370                 ct = ((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l);
9371                 bf_set(wqe_ctxt_tag, &wqe->els_req.wqe_com,
9372                        iocbq->iocb.ulpContext);
9373                 bf_set(wqe_ct, &wqe->els_req.wqe_com, ct);
9374                 bf_set(wqe_pu, &wqe->els_req.wqe_com, 0);
9375                 /* CCP CCPE PV PRI in word10 were set in the memcpy */
9376                 if (command_type == ELS_COMMAND_FIP)
9377                         els_id = ((iocbq->iocb_flag & LPFC_FIP_ELS_ID_MASK)
9378                                         >> LPFC_FIP_ELS_ID_SHIFT);
9379                 pcmd = (uint32_t *) (((struct lpfc_dmabuf *)
9380                                         iocbq->context2)->virt);
9381                 if_type = bf_get(lpfc_sli_intf_if_type,
9382                                         &phba->sli4_hba.sli_intf);
9383                 if (if_type >= LPFC_SLI_INTF_IF_TYPE_2) {
9384                         if (pcmd && (*pcmd == ELS_CMD_FLOGI ||
9385                                 *pcmd == ELS_CMD_SCR ||
9386                                 *pcmd == ELS_CMD_RSCN_XMT ||
9387                                 *pcmd == ELS_CMD_FDISC ||
9388                                 *pcmd == ELS_CMD_LOGO ||
9389                                 *pcmd == ELS_CMD_PLOGI)) {
9390                                 bf_set(els_req64_sp, &wqe->els_req, 1);
9391                                 bf_set(els_req64_sid, &wqe->els_req,
9392                                         iocbq->vport->fc_myDID);
9393                                 if ((*pcmd == ELS_CMD_FLOGI) &&
9394                                         !(phba->fc_topology ==
9395                                                 LPFC_TOPOLOGY_LOOP))
9396                                         bf_set(els_req64_sid, &wqe->els_req, 0);
9397                                 bf_set(wqe_ct, &wqe->els_req.wqe_com, 1);
9398                                 bf_set(wqe_ctxt_tag, &wqe->els_req.wqe_com,
9399                                         phba->vpi_ids[iocbq->vport->vpi]);
9400                         } else if (pcmd && iocbq->context1) {
9401                                 bf_set(wqe_ct, &wqe->els_req.wqe_com, 0);
9402                                 bf_set(wqe_ctxt_tag, &wqe->els_req.wqe_com,
9403                                         phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
9404                         }
9405                 }
9406                 bf_set(wqe_temp_rpi, &wqe->els_req.wqe_com,
9407                        phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
9408                 bf_set(wqe_els_id, &wqe->els_req.wqe_com, els_id);
9409                 bf_set(wqe_dbde, &wqe->els_req.wqe_com, 1);
9410                 bf_set(wqe_iod, &wqe->els_req.wqe_com, LPFC_WQE_IOD_READ);
9411                 bf_set(wqe_qosd, &wqe->els_req.wqe_com, 1);
9412                 bf_set(wqe_lenloc, &wqe->els_req.wqe_com, LPFC_WQE_LENLOC_NONE);
9413                 bf_set(wqe_ebde_cnt, &wqe->els_req.wqe_com, 0);
9414                 wqe->els_req.max_response_payload_len = total_len - xmit_len;
9415                 break;
9416         case CMD_XMIT_SEQUENCE64_CX:
9417                 bf_set(wqe_ctxt_tag, &wqe->xmit_sequence.wqe_com,
9418                        iocbq->iocb.un.ulpWord[3]);
9419                 bf_set(wqe_rcvoxid, &wqe->xmit_sequence.wqe_com,
9420                        iocbq->iocb.unsli3.rcvsli3.ox_id);
9421                 /* The entire sequence is transmitted for this IOCB */
9422                 xmit_len = total_len;
9423                 cmnd = CMD_XMIT_SEQUENCE64_CR;
9424                 if (phba->link_flag & LS_LOOPBACK_MODE)
9425                         bf_set(wqe_xo, &wqe->xmit_sequence.wge_ctl, 1);
9426                 /* fall through */
9427         case CMD_XMIT_SEQUENCE64_CR:
9428                 /* word3 iocb=io_tag32 wqe=reserved */
9429                 wqe->xmit_sequence.rsvd3 = 0;
9430                 /* word4 relative_offset memcpy */
9431                 /* word5 r_ctl/df_ctl memcpy */
9432                 bf_set(wqe_pu, &wqe->xmit_sequence.wqe_com, 0);
9433                 bf_set(wqe_dbde, &wqe->xmit_sequence.wqe_com, 1);
9434                 bf_set(wqe_iod, &wqe->xmit_sequence.wqe_com,
9435                        LPFC_WQE_IOD_WRITE);
9436                 bf_set(wqe_lenloc, &wqe->xmit_sequence.wqe_com,
9437                        LPFC_WQE_LENLOC_WORD12);
9438                 bf_set(wqe_ebde_cnt, &wqe->xmit_sequence.wqe_com, 0);
9439                 wqe->xmit_sequence.xmit_len = xmit_len;
9440                 command_type = OTHER_COMMAND;
9441                 break;
9442         case CMD_XMIT_BCAST64_CN:
9443                 /* word3 iocb=iotag32 wqe=seq_payload_len */
9444                 wqe->xmit_bcast64.seq_payload_len = xmit_len;
9445                 /* word4 iocb=rsvd wqe=rsvd */
9446                 /* word5 iocb=rctl/type/df_ctl wqe=rctl/type/df_ctl memcpy */
9447                 /* word6 iocb=ctxt_tag/io_tag wqe=ctxt_tag/xri */
9448                 bf_set(wqe_ct, &wqe->xmit_bcast64.wqe_com,
9449                         ((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l));
9450                 bf_set(wqe_dbde, &wqe->xmit_bcast64.wqe_com, 1);
9451                 bf_set(wqe_iod, &wqe->xmit_bcast64.wqe_com, LPFC_WQE_IOD_WRITE);
9452                 bf_set(wqe_lenloc, &wqe->xmit_bcast64.wqe_com,
9453                        LPFC_WQE_LENLOC_WORD3);
9454                 bf_set(wqe_ebde_cnt, &wqe->xmit_bcast64.wqe_com, 0);
9455                 break;
9456         case CMD_FCP_IWRITE64_CR:
9457                 command_type = FCP_COMMAND_DATA_OUT;
9458                 /* word3 iocb=iotag wqe=payload_offset_len */
9459                 /* Add the FCP_CMD and FCP_RSP sizes to get the offset */
9460                 bf_set(payload_offset_len, &wqe->fcp_iwrite,
9461                        xmit_len + sizeof(struct fcp_rsp));
9462                 bf_set(cmd_buff_len, &wqe->fcp_iwrite,
9463                        0);
9464                 /* word4 iocb=parameter wqe=total_xfer_length memcpy */
9465                 /* word5 iocb=initial_xfer_len wqe=initial_xfer_len memcpy */
9466                 bf_set(wqe_erp, &wqe->fcp_iwrite.wqe_com,
9467                        iocbq->iocb.ulpFCP2Rcvy);
9468                 bf_set(wqe_lnk, &wqe->fcp_iwrite.wqe_com, iocbq->iocb.ulpXS);
9469                 /* Always open the exchange */
9470                 bf_set(wqe_iod, &wqe->fcp_iwrite.wqe_com, LPFC_WQE_IOD_WRITE);
9471                 bf_set(wqe_lenloc, &wqe->fcp_iwrite.wqe_com,
9472                        LPFC_WQE_LENLOC_WORD4);
9473                 bf_set(wqe_pu, &wqe->fcp_iwrite.wqe_com, iocbq->iocb.ulpPU);
9474                 bf_set(wqe_dbde, &wqe->fcp_iwrite.wqe_com, 1);
9475                 if (iocbq->iocb_flag & LPFC_IO_OAS) {
9476                         bf_set(wqe_oas, &wqe->fcp_iwrite.wqe_com, 1);
9477                         bf_set(wqe_ccpe, &wqe->fcp_iwrite.wqe_com, 1);
9478                         if (iocbq->priority) {
9479                                 bf_set(wqe_ccp, &wqe->fcp_iwrite.wqe_com,
9480                                        (iocbq->priority << 1));
9481                         } else {
9482                                 bf_set(wqe_ccp, &wqe->fcp_iwrite.wqe_com,
9483                                        (phba->cfg_XLanePriority << 1));
9484                         }
9485                 }
9486                 /* Note, word 10 is already initialized to 0 */
9487 
9488                 /* Don't set PBDE for Perf hints, just lpfc_enable_pbde */
9489                 if (phba->cfg_enable_pbde)
9490                         bf_set(wqe_pbde, &wqe->fcp_iwrite.wqe_com, 1);
9491                 else
9492                         bf_set(wqe_pbde, &wqe->fcp_iwrite.wqe_com, 0);
9493 
9494                 if (phba->fcp_embed_io) {
9495                         struct lpfc_io_buf *lpfc_cmd;
9496                         struct sli4_sge *sgl;
9497                         struct fcp_cmnd *fcp_cmnd;
9498                         uint32_t *ptr;
9499 
9500                         /* 128 byte wqe support here */
9501 
9502                         lpfc_cmd = iocbq->context1;
9503                         sgl = (struct sli4_sge *)lpfc_cmd->dma_sgl;
9504                         fcp_cmnd = lpfc_cmd->fcp_cmnd;
9505 
9506                         /* Word 0-2 - FCP_CMND */
9507                         wqe->generic.bde.tus.f.bdeFlags =
9508                                 BUFF_TYPE_BDE_IMMED;
9509                         wqe->generic.bde.tus.f.bdeSize = sgl->sge_len;
9510                         wqe->generic.bde.addrHigh = 0;
9511                         wqe->generic.bde.addrLow =  88;  /* Word 22 */
9512 
9513                         bf_set(wqe_wqes, &wqe->fcp_iwrite.wqe_com, 1);
9514                         bf_set(wqe_dbde, &wqe->fcp_iwrite.wqe_com, 0);
9515 
9516                         /* Word 22-29  FCP CMND Payload */
9517                         ptr = &wqe->words[22];
9518                         memcpy(ptr, fcp_cmnd, sizeof(struct fcp_cmnd));
9519                 }
9520                 break;
9521         case CMD_FCP_IREAD64_CR:
9522                 /* word3 iocb=iotag wqe=payload_offset_len */
9523                 /* Add the FCP_CMD and FCP_RSP sizes to get the offset */
9524                 bf_set(payload_offset_len, &wqe->fcp_iread,
9525                        xmit_len + sizeof(struct fcp_rsp));
9526                 bf_set(cmd_buff_len, &wqe->fcp_iread,
9527                        0);
9528                 /* word4 iocb=parameter wqe=total_xfer_length memcpy */
9529                 /* word5 iocb=initial_xfer_len wqe=initial_xfer_len memcpy */
9530                 bf_set(wqe_erp, &wqe->fcp_iread.wqe_com,
9531                        iocbq->iocb.ulpFCP2Rcvy);
9532                 bf_set(wqe_lnk, &wqe->fcp_iread.wqe_com, iocbq->iocb.ulpXS);
9533                 /* Always open the exchange */
9534                 bf_set(wqe_iod, &wqe->fcp_iread.wqe_com, LPFC_WQE_IOD_READ);
9535                 bf_set(wqe_lenloc, &wqe->fcp_iread.wqe_com,
9536                        LPFC_WQE_LENLOC_WORD4);
9537                 bf_set(wqe_pu, &wqe->fcp_iread.wqe_com, iocbq->iocb.ulpPU);
9538                 bf_set(wqe_dbde, &wqe->fcp_iread.wqe_com, 1);
9539                 if (iocbq->iocb_flag & LPFC_IO_OAS) {
9540                         bf_set(wqe_oas, &wqe->fcp_iread.wqe_com, 1);
9541                         bf_set(wqe_ccpe, &wqe->fcp_iread.wqe_com, 1);
9542                         if (iocbq->priority) {
9543                                 bf_set(wqe_ccp, &wqe->fcp_iread.wqe_com,
9544                                        (iocbq->priority << 1));
9545                         } else {
9546                                 bf_set(wqe_ccp, &wqe->fcp_iread.wqe_com,
9547                                        (phba->cfg_XLanePriority << 1));
9548                         }
9549                 }
9550                 /* Note, word 10 is already initialized to 0 */
9551 
9552                 /* Don't set PBDE for Perf hints, just lpfc_enable_pbde */
9553                 if (phba->cfg_enable_pbde)
9554                         bf_set(wqe_pbde, &wqe->fcp_iread.wqe_com, 1);
9555                 else
9556                         bf_set(wqe_pbde, &wqe->fcp_iread.wqe_com, 0);
9557 
9558                 if (phba->fcp_embed_io) {
9559                         struct lpfc_io_buf *lpfc_cmd;
9560                         struct sli4_sge *sgl;
9561                         struct fcp_cmnd *fcp_cmnd;
9562                         uint32_t *ptr;
9563 
9564                         /* 128 byte wqe support here */
9565 
9566                         lpfc_cmd = iocbq->context1;
9567                         sgl = (struct sli4_sge *)lpfc_cmd->dma_sgl;
9568                         fcp_cmnd = lpfc_cmd->fcp_cmnd;
9569 
9570                         /* Word 0-2 - FCP_CMND */
9571                         wqe->generic.bde.tus.f.bdeFlags =
9572                                 BUFF_TYPE_BDE_IMMED;
9573                         wqe->generic.bde.tus.f.bdeSize = sgl->sge_len;
9574                         wqe->generic.bde.addrHigh = 0;
9575                         wqe->generic.bde.addrLow =  88;  /* Word 22 */
9576 
9577                         bf_set(wqe_wqes, &wqe->fcp_iread.wqe_com, 1);
9578                         bf_set(wqe_dbde, &wqe->fcp_iread.wqe_com, 0);
9579 
9580                         /* Word 22-29  FCP CMND Payload */
9581                         ptr = &wqe->words[22];
9582                         memcpy(ptr, fcp_cmnd, sizeof(struct fcp_cmnd));
9583                 }
9584                 break;
9585         case CMD_FCP_ICMND64_CR:
9586                 /* word3 iocb=iotag wqe=payload_offset_len */
9587                 /* Add the FCP_CMD and FCP_RSP sizes to get the offset */
9588                 bf_set(payload_offset_len, &wqe->fcp_icmd,
9589                        xmit_len + sizeof(struct fcp_rsp));
9590                 bf_set(cmd_buff_len, &wqe->fcp_icmd,
9591                        0);
9592                 /* word3 iocb=IO_TAG wqe=reserved */
9593                 bf_set(wqe_pu, &wqe->fcp_icmd.wqe_com, 0);
9594                 /* Always open the exchange */
9595                 bf_set(wqe_dbde, &wqe->fcp_icmd.wqe_com, 1);
9596                 bf_set(wqe_iod, &wqe->fcp_icmd.wqe_com, LPFC_WQE_IOD_WRITE);
9597                 bf_set(wqe_qosd, &wqe->fcp_icmd.wqe_com, 1);
9598                 bf_set(wqe_lenloc, &wqe->fcp_icmd.wqe_com,
9599                        LPFC_WQE_LENLOC_NONE);
9600                 bf_set(wqe_erp, &wqe->fcp_icmd.wqe_com,
9601                        iocbq->iocb.ulpFCP2Rcvy);
9602                 if (iocbq->iocb_flag & LPFC_IO_OAS) {
9603                         bf_set(wqe_oas, &wqe->fcp_icmd.wqe_com, 1);
9604                         bf_set(wqe_ccpe, &wqe->fcp_icmd.wqe_com, 1);
9605                         if (iocbq->priority) {
9606                                 bf_set(wqe_ccp, &wqe->fcp_icmd.wqe_com,
9607                                        (iocbq->priority << 1));
9608                         } else {
9609                                 bf_set(wqe_ccp, &wqe->fcp_icmd.wqe_com,
9610                                        (phba->cfg_XLanePriority << 1));
9611                         }
9612                 }
9613                 /* Note, word 10 is already initialized to 0 */
9614 
9615                 if (phba->fcp_embed_io) {
9616                         struct lpfc_io_buf *lpfc_cmd;
9617                         struct sli4_sge *sgl;
9618                         struct fcp_cmnd *fcp_cmnd;
9619                         uint32_t *ptr;
9620 
9621                         /* 128 byte wqe support here */
9622 
9623                         lpfc_cmd = iocbq->context1;
9624                         sgl = (struct sli4_sge *)lpfc_cmd->dma_sgl;
9625                         fcp_cmnd = lpfc_cmd->fcp_cmnd;
9626 
9627                         /* Word 0-2 - FCP_CMND */
9628                         wqe->generic.bde.tus.f.bdeFlags =
9629                                 BUFF_TYPE_BDE_IMMED;
9630                         wqe->generic.bde.tus.f.bdeSize = sgl->sge_len;
9631                         wqe->generic.bde.addrHigh = 0;
9632                         wqe->generic.bde.addrLow =  88;  /* Word 22 */
9633 
9634                         bf_set(wqe_wqes, &wqe->fcp_icmd.wqe_com, 1);
9635                         bf_set(wqe_dbde, &wqe->fcp_icmd.wqe_com, 0);
9636 
9637                         /* Word 22-29  FCP CMND Payload */
9638                         ptr = &wqe->words[22];
9639                         memcpy(ptr, fcp_cmnd, sizeof(struct fcp_cmnd));
9640                 }
9641                 break;
9642         case CMD_GEN_REQUEST64_CR:
9643                 /* For this command calculate the xmit length of the
9644                  * request bde.
9645                  */
9646                 xmit_len = 0;
9647                 numBdes = iocbq->iocb.un.genreq64.bdl.bdeSize /
9648                         sizeof(struct ulp_bde64);
9649                 for (i = 0; i < numBdes; i++) {
9650                         bde.tus.w = le32_to_cpu(bpl[i].tus.w);
9651                         if (bde.tus.f.bdeFlags != BUFF_TYPE_BDE_64)
9652                                 break;
9653                         xmit_len += bde.tus.f.bdeSize;
9654                 }
9655                 /* word3 iocb=IO_TAG wqe=request_payload_len */
9656                 wqe->gen_req.request_payload_len = xmit_len;
9657                 /* word4 iocb=parameter wqe=relative_offset memcpy */
9658                 /* word5 [rctl, type, df_ctl, la] copied in memcpy */
9659                 /* word6 context tag copied in memcpy */
9660                 if (iocbq->iocb.ulpCt_h  || iocbq->iocb.ulpCt_l) {
9661                         ct = ((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l);
9662                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
9663                                 "2015 Invalid CT %x command 0x%x\n",
9664                                 ct, iocbq->iocb.ulpCommand);
9665                         return IOCB_ERROR;
9666                 }
9667                 bf_set(wqe_ct, &wqe->gen_req.wqe_com, 0);
9668                 bf_set(wqe_tmo, &wqe->gen_req.wqe_com, iocbq->iocb.ulpTimeout);
9669                 bf_set(wqe_pu, &wqe->gen_req.wqe_com, iocbq->iocb.ulpPU);
9670                 bf_set(wqe_dbde, &wqe->gen_req.wqe_com, 1);
9671                 bf_set(wqe_iod, &wqe->gen_req.wqe_com, LPFC_WQE_IOD_READ);
9672                 bf_set(wqe_qosd, &wqe->gen_req.wqe_com, 1);
9673                 bf_set(wqe_lenloc, &wqe->gen_req.wqe_com, LPFC_WQE_LENLOC_NONE);
9674                 bf_set(wqe_ebde_cnt, &wqe->gen_req.wqe_com, 0);
9675                 wqe->gen_req.max_response_payload_len = total_len - xmit_len;
9676                 command_type = OTHER_COMMAND;
9677                 break;
9678         case CMD_XMIT_ELS_RSP64_CX:
9679                 ndlp = (struct lpfc_nodelist *)iocbq->context1;
9680                 /* words0-2 BDE memcpy */
9681                 /* word3 iocb=iotag32 wqe=response_payload_len */
9682                 wqe->xmit_els_rsp.response_payload_len = xmit_len;
9683                 /* word4 */
9684                 wqe->xmit_els_rsp.word4 = 0;
9685                 /* word5 iocb=rsvd wge=did */
9686                 bf_set(wqe_els_did, &wqe->xmit_els_rsp.wqe_dest,
9687                          iocbq->iocb.un.xseq64.xmit_els_remoteID);
9688 
9689                 if_type = bf_get(lpfc_sli_intf_if_type,
9690                                         &phba->sli4_hba.sli_intf);
9691                 if (if_type >= LPFC_SLI_INTF_IF_TYPE_2) {
9692                         if (iocbq->vport->fc_flag & FC_PT2PT) {
9693                                 bf_set(els_rsp64_sp, &wqe->xmit_els_rsp, 1);
9694                                 bf_set(els_rsp64_sid, &wqe->xmit_els_rsp,
9695                                         iocbq->vport->fc_myDID);
9696                                 if (iocbq->vport->fc_myDID == Fabric_DID) {
9697                                         bf_set(wqe_els_did,
9698                                                 &wqe->xmit_els_rsp.wqe_dest, 0);
9699                                 }
9700                         }
9701                 }
9702                 bf_set(wqe_ct, &wqe->xmit_els_rsp.wqe_com,
9703                        ((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l));
9704                 bf_set(wqe_pu, &wqe->xmit_els_rsp.wqe_com, iocbq->iocb.ulpPU);
9705                 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
9706                        iocbq->iocb.unsli3.rcvsli3.ox_id);
9707                 if (!iocbq->iocb.ulpCt_h && iocbq->iocb.ulpCt_l)
9708                         bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com,
9709                                phba->vpi_ids[iocbq->vport->vpi]);
9710                 bf_set(wqe_dbde, &wqe->xmit_els_rsp.wqe_com, 1);
9711                 bf_set(wqe_iod, &wqe->xmit_els_rsp.wqe_com, LPFC_WQE_IOD_WRITE);
9712                 bf_set(wqe_qosd, &wqe->xmit_els_rsp.wqe_com, 1);
9713                 bf_set(wqe_lenloc, &wqe->xmit_els_rsp.wqe_com,
9714                        LPFC_WQE_LENLOC_WORD3);
9715                 bf_set(wqe_ebde_cnt, &wqe->xmit_els_rsp.wqe_com, 0);
9716                 bf_set(wqe_rsp_temp_rpi, &wqe->xmit_els_rsp,
9717                        phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
9718                 pcmd = (uint32_t *) (((struct lpfc_dmabuf *)
9719                                         iocbq->context2)->virt);
9720                 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
9721                                 bf_set(els_rsp64_sp, &wqe->xmit_els_rsp, 1);
9722                                 bf_set(els_rsp64_sid, &wqe->xmit_els_rsp,
9723                                         iocbq->vport->fc_myDID);
9724                                 bf_set(wqe_ct, &wqe->xmit_els_rsp.wqe_com, 1);
9725                                 bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com,
9726                                         phba->vpi_ids[phba->pport->vpi]);
9727                 }
9728                 command_type = OTHER_COMMAND;
9729                 break;
9730         case CMD_CLOSE_XRI_CN:
9731         case CMD_ABORT_XRI_CN:
9732         case CMD_ABORT_XRI_CX:
9733                 /* words 0-2 memcpy should be 0 rserved */
9734                 /* port will send abts */
9735                 abrt_iotag = iocbq->iocb.un.acxri.abortContextTag;
9736                 if (abrt_iotag != 0 && abrt_iotag <= phba->sli.last_iotag) {
9737                         abrtiocbq = phba->sli.iocbq_lookup[abrt_iotag];
9738                         fip = abrtiocbq->iocb_flag & LPFC_FIP_ELS_ID_MASK;
9739                 } else
9740                         fip = 0;
9741 
9742                 if ((iocbq->iocb.ulpCommand == CMD_CLOSE_XRI_CN) || fip)
9743                         /*
9744                          * The link is down, or the command was ELS_FIP
9745                          * so the fw does not need to send abts
9746                          * on the wire.
9747                          */
9748                         bf_set(abort_cmd_ia, &wqe->abort_cmd, 1);
9749                 else
9750                         bf_set(abort_cmd_ia, &wqe->abort_cmd, 0);
9751                 bf_set(abort_cmd_criteria, &wqe->abort_cmd, T_XRI_TAG);
9752                 /* word5 iocb=CONTEXT_TAG|IO_TAG wqe=reserved */
9753                 wqe->abort_cmd.rsrvd5 = 0;
9754                 bf_set(wqe_ct, &wqe->abort_cmd.wqe_com,
9755                         ((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l));
9756                 abort_tag = iocbq->iocb.un.acxri.abortIoTag;
9757                 /*
9758                  * The abort handler will send us CMD_ABORT_XRI_CN or
9759                  * CMD_CLOSE_XRI_CN and the fw only accepts CMD_ABORT_XRI_CX
9760                  */
9761                 bf_set(wqe_cmnd, &wqe->abort_cmd.wqe_com, CMD_ABORT_XRI_CX);
9762                 bf_set(wqe_qosd, &wqe->abort_cmd.wqe_com, 1);
9763                 bf_set(wqe_lenloc, &wqe->abort_cmd.wqe_com,
9764                        LPFC_WQE_LENLOC_NONE);
9765                 cmnd = CMD_ABORT_XRI_CX;
9766                 command_type = OTHER_COMMAND;
9767                 xritag = 0;
9768                 break;
9769         case CMD_XMIT_BLS_RSP64_CX:
9770                 ndlp = (struct lpfc_nodelist *)iocbq->context1;
9771                 /* As BLS ABTS RSP WQE is very different from other WQEs,
9772                  * we re-construct this WQE here based on information in
9773                  * iocbq from scratch.
9774                  */
9775                 memset(wqe, 0, sizeof(*wqe));
9776                 /* OX_ID is invariable to who sent ABTS to CT exchange */
9777                 bf_set(xmit_bls_rsp64_oxid, &wqe->xmit_bls_rsp,
9778                        bf_get(lpfc_abts_oxid, &iocbq->iocb.un.bls_rsp));
9779                 if (bf_get(lpfc_abts_orig, &iocbq->iocb.un.bls_rsp) ==
9780                     LPFC_ABTS_UNSOL_INT) {
9781                         /* ABTS sent by initiator to CT exchange, the
9782                          * RX_ID field will be filled with the newly
9783                          * allocated responder XRI.
9784                          */
9785                         bf_set(xmit_bls_rsp64_rxid, &wqe->xmit_bls_rsp,
9786                                iocbq->sli4_xritag);
9787                 } else {
9788                         /* ABTS sent by responder to CT exchange, the
9789                          * RX_ID field will be filled with the responder
9790                          * RX_ID from ABTS.
9791                          */
9792                         bf_set(xmit_bls_rsp64_rxid, &wqe->xmit_bls_rsp,
9793                                bf_get(lpfc_abts_rxid, &iocbq->iocb.un.bls_rsp));
9794                 }
9795                 bf_set(xmit_bls_rsp64_seqcnthi, &wqe->xmit_bls_rsp, 0xffff);
9796                 bf_set(wqe_xmit_bls_pt, &wqe->xmit_bls_rsp.wqe_dest, 0x1);
9797 
9798                 /* Use CT=VPI */
9799                 bf_set(wqe_els_did, &wqe->xmit_bls_rsp.wqe_dest,
9800                         ndlp->nlp_DID);
9801                 bf_set(xmit_bls_rsp64_temprpi, &wqe->xmit_bls_rsp,
9802                         iocbq->iocb.ulpContext);
9803                 bf_set(wqe_ct, &wqe->xmit_bls_rsp.wqe_com, 1);
9804                 bf_set(wqe_ctxt_tag, &wqe->xmit_bls_rsp.wqe_com,
9805                         phba->vpi_ids[phba->pport->vpi]);
9806                 bf_set(wqe_qosd, &wqe->xmit_bls_rsp.wqe_com, 1);
9807                 bf_set(wqe_lenloc, &wqe->xmit_bls_rsp.wqe_com,
9808                        LPFC_WQE_LENLOC_NONE);
9809                 /* Overwrite the pre-set comnd type with OTHER_COMMAND */
9810                 command_type = OTHER_COMMAND;
9811                 if (iocbq->iocb.un.xseq64.w5.hcsw.Rctl == FC_RCTL_BA_RJT) {
9812                         bf_set(xmit_bls_rsp64_rjt_vspec, &wqe->xmit_bls_rsp,
9813                                bf_get(lpfc_vndr_code, &iocbq->iocb.un.bls_rsp));
9814                         bf_set(xmit_bls_rsp64_rjt_expc, &wqe->xmit_bls_rsp,
9815                                bf_get(lpfc_rsn_expln, &iocbq->iocb.un.bls_rsp));
9816                         bf_set(xmit_bls_rsp64_rjt_rsnc, &wqe->xmit_bls_rsp,
9817                                bf_get(lpfc_rsn_code, &iocbq->iocb.un.bls_rsp));
9818                 }
9819 
9820                 break;
9821         case CMD_SEND_FRAME:
9822                 bf_set(wqe_cmnd, &wqe->generic.wqe_com, CMD_SEND_FRAME);
9823                 bf_set(wqe_sof, &wqe->generic.wqe_com, 0x2E); /* SOF byte */
9824                 bf_set(wqe_eof, &wqe->generic.wqe_com, 0x41); /* EOF byte */
9825                 bf_set(wqe_lenloc, &wqe->generic.wqe_com, 1);
9826                 bf_set(wqe_xbl, &wqe->generic.wqe_com, 1);
9827                 bf_set(wqe_dbde, &wqe->generic.wqe_com, 1);
9828                 bf_set(wqe_xc, &wqe->generic.wqe_com, 1);
9829                 bf_set(wqe_cmd_type, &wqe->generic.wqe_com, 0xA);
9830                 bf_set(wqe_cqid, &wqe->generic.wqe_com, LPFC_WQE_CQ_ID_DEFAULT);
9831                 bf_set(wqe_xri_tag, &wqe->generic.wqe_com, xritag);
9832                 bf_set(wqe_reqtag, &wqe->generic.wqe_com, iocbq->iotag);
9833                 return 0;
9834         case CMD_XRI_ABORTED_CX:
9835         case CMD_CREATE_XRI_CR: /* Do we expect to use this? */
9836         case CMD_IOCB_FCP_IBIDIR64_CR: /* bidirectional xfer */
9837         case CMD_FCP_TSEND64_CX: /* Target mode send xfer-ready */
9838         case CMD_FCP_TRSP64_CX: /* Target mode rcv */
9839         case CMD_FCP_AUTO_TRSP_CX: /* Auto target rsp */
9840         default:
9841                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
9842                                 "2014 Invalid command 0x%x\n",
9843                                 iocbq->iocb.ulpCommand);
9844                 return IOCB_ERROR;
9845                 break;
9846         }
9847 
9848         if (iocbq->iocb_flag & LPFC_IO_DIF_PASS)
9849                 bf_set(wqe_dif, &wqe->generic.wqe_com, LPFC_WQE_DIF_PASSTHRU);
9850         else if (iocbq->iocb_flag & LPFC_IO_DIF_STRIP)
9851                 bf_set(wqe_dif, &wqe->generic.wqe_com, LPFC_WQE_DIF_STRIP);
9852         else if (iocbq->iocb_flag & LPFC_IO_DIF_INSERT)
9853                 bf_set(wqe_dif, &wqe->generic.wqe_com, LPFC_WQE_DIF_INSERT);
9854         iocbq->iocb_flag &= ~(LPFC_IO_DIF_PASS | LPFC_IO_DIF_STRIP |
9855                               LPFC_IO_DIF_INSERT);
9856         bf_set(wqe_xri_tag, &wqe->generic.wqe_com, xritag);
9857         bf_set(wqe_reqtag, &wqe->generic.wqe_com, iocbq->iotag);
9858         wqe->generic.wqe_com.abort_tag = abort_tag;
9859         bf_set(wqe_cmd_type, &wqe->generic.wqe_com, command_type);
9860         bf_set(wqe_cmnd, &wqe->generic.wqe_com, cmnd);
9861         bf_set(wqe_class, &wqe->generic.wqe_com, iocbq->iocb.ulpClass);
9862         bf_set(wqe_cqid, &wqe->generic.wqe_com, LPFC_WQE_CQ_ID_DEFAULT);
9863         return 0;
9864 }
9865 
9866 /**
9867  * __lpfc_sli_issue_iocb_s4 - SLI4 device lockless ver of lpfc_sli_issue_iocb
9868  * @phba: Pointer to HBA context object.
9869  * @ring_number: SLI ring number to issue iocb on.
9870  * @piocb: Pointer to command iocb.
9871  * @flag: Flag indicating if this command can be put into txq.
9872  *
9873  * __lpfc_sli_issue_iocb_s4 is used by other functions in the driver to issue
9874  * an iocb command to an HBA with SLI-4 interface spec.
9875  *
9876  * This function is called with hbalock held. The function will return success
9877  * after it successfully submit the iocb to firmware or after adding to the
9878  * txq.
9879  **/
9880 static int
9881 __lpfc_sli_issue_iocb_s4(struct lpfc_hba *phba, uint32_t ring_number,
9882                          struct lpfc_iocbq *piocb, uint32_t flag)
9883 {
9884         struct lpfc_sglq *sglq;
9885         union lpfc_wqe128 wqe;
9886         struct lpfc_queue *wq;
9887         struct lpfc_sli_ring *pring;
9888 
9889         /* Get the WQ */
9890         if ((piocb->iocb_flag & LPFC_IO_FCP) ||
9891             (piocb->iocb_flag & LPFC_USE_FCPWQIDX)) {
9892                 wq = phba->sli4_hba.hdwq[piocb->hba_wqidx].io_wq;
9893         } else {
9894                 wq = phba->sli4_hba.els_wq;
9895         }
9896 
9897         /* Get corresponding ring */
9898         pring = wq->pring;
9899 
9900         /*
9901          * The WQE can be either 64 or 128 bytes,
9902          */
9903 
9904         lockdep_assert_held(&pring->ring_lock);
9905 
9906         if (piocb->sli4_xritag == NO_XRI) {
9907                 if (piocb->iocb.ulpCommand == CMD_ABORT_XRI_CN ||
9908                     piocb->iocb.ulpCommand == CMD_CLOSE_XRI_CN)
9909                         sglq = NULL;
9910                 else {
9911                         if (!list_empty(&pring->txq)) {
9912                                 if (!(flag & SLI_IOCB_RET_IOCB)) {
9913                                         __lpfc_sli_ringtx_put(phba,
9914                                                 pring, piocb);
9915                                         return IOCB_SUCCESS;
9916                                 } else {
9917                                         return IOCB_BUSY;
9918                                 }
9919                         } else {
9920                                 sglq = __lpfc_sli_get_els_sglq(phba, piocb);
9921                                 if (!sglq) {
9922                                         if (!(flag & SLI_IOCB_RET_IOCB)) {
9923                                                 __lpfc_sli_ringtx_put(phba,
9924                                                                 pring,
9925                                                                 piocb);
9926                                                 return IOCB_SUCCESS;
9927                                         } else
9928                                                 return IOCB_BUSY;
9929                                 }
9930                         }
9931                 }
9932         } else if (piocb->iocb_flag &  LPFC_IO_FCP)
9933                 /* These IO's already have an XRI and a mapped sgl. */
9934                 sglq = NULL;
9935         else {
9936                 /*
9937                  * This is a continuation of a commandi,(CX) so this
9938                  * sglq is on the active list
9939                  */
9940                 sglq = __lpfc_get_active_sglq(phba, piocb->sli4_lxritag);
9941                 if (!sglq)
9942                         return IOCB_ERROR;
9943         }
9944 
9945         if (sglq) {
9946                 piocb->sli4_lxritag = sglq->sli4_lxritag;
9947                 piocb->sli4_xritag = sglq->sli4_xritag;
9948                 if (NO_XRI == lpfc_sli4_bpl2sgl(phba, piocb, sglq))
9949                         return IOCB_ERROR;
9950         }
9951 
9952         if (lpfc_sli4_iocb2wqe(phba, piocb, &wqe))
9953                 return IOCB_ERROR;
9954 
9955         if (lpfc_sli4_wq_put(wq, &wqe))
9956                 return IOCB_ERROR;
9957         lpfc_sli_ringtxcmpl_put(phba, pring, piocb);
9958 
9959         return 0;
9960 }
9961 
9962 /**
9963  * __lpfc_sli_issue_iocb - Wrapper func of lockless version for issuing iocb
9964  *
9965  * This routine wraps the actual lockless version for issusing IOCB function
9966  * pointer from the lpfc_hba struct.
9967  *
9968  * Return codes:
9969  * IOCB_ERROR - Error
9970  * IOCB_SUCCESS - Success
9971  * IOCB_BUSY - Busy
9972  **/
9973 int
9974 __lpfc_sli_issue_iocb(struct lpfc_hba *phba, uint32_t ring_number,
9975                 struct lpfc_iocbq *piocb, uint32_t flag)
9976 {
9977         return phba->__lpfc_sli_issue_iocb(phba, ring_number, piocb, flag);
9978 }
9979 
9980 /**
9981  * lpfc_sli_api_table_setup - Set up sli api function jump table
9982  * @phba: The hba struct for which this call is being executed.
9983  * @dev_grp: The HBA PCI-Device group number.
9984  *
9985  * This routine sets up the SLI interface API function jump table in @phba
9986  * struct.
9987  * Returns: 0 - success, -ENODEV - failure.
9988  **/
9989 int
9990 lpfc_sli_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
9991 {
9992 
9993         switch (dev_grp) {
9994         case LPFC_PCI_DEV_LP:
9995                 phba->__lpfc_sli_issue_iocb = __lpfc_sli_issue_iocb_s3;
9996                 phba->__lpfc_sli_release_iocbq = __lpfc_sli_release_iocbq_s3;
9997                 break;
9998         case LPFC_PCI_DEV_OC:
9999                 phba->__lpfc_sli_issue_iocb = __lpfc_sli_issue_iocb_s4;
10000                 phba->__lpfc_sli_release_iocbq = __lpfc_sli_release_iocbq_s4;
10001                 break;
10002         default:
10003                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
10004                                 "1419 Invalid HBA PCI-device group: 0x%x\n",
10005                                 dev_grp);
10006                 return -ENODEV;
10007                 break;
10008         }
10009         phba->lpfc_get_iocb_from_iocbq = lpfc_get_iocb_from_iocbq;
10010         return 0;
10011 }
10012 
10013 /**
10014  * lpfc_sli4_calc_ring - Calculates which ring to use
10015  * @phba: Pointer to HBA context object.
10016  * @piocb: Pointer to command iocb.
10017  *
10018  * For SLI4 only, FCP IO can deferred to one fo many WQs, based on
10019  * hba_wqidx, thus we need to calculate the corresponding ring.
10020  * Since ABORTS must go on the same WQ of the command they are
10021  * aborting, we use command's hba_wqidx.
10022  */
10023 struct lpfc_sli_ring *
10024 lpfc_sli4_calc_ring(struct lpfc_hba *phba, struct lpfc_iocbq *piocb)
10025 {
10026         struct lpfc_io_buf *lpfc_cmd;
10027 
10028         if (piocb->iocb_flag & (LPFC_IO_FCP | LPFC_USE_FCPWQIDX)) {
10029                 if (unlikely(!phba->sli4_hba.hdwq))
10030                         return NULL;
10031                 /*
10032                  * for abort iocb hba_wqidx should already
10033                  * be setup based on what work queue we used.
10034                  */
10035                 if (!(piocb->iocb_flag & LPFC_USE_FCPWQIDX)) {
10036                         lpfc_cmd = (struct lpfc_io_buf *)piocb->context1;
10037                         piocb->hba_wqidx = lpfc_cmd->hdwq_no;
10038                 }
10039                 return phba->sli4_hba.hdwq[piocb->hba_wqidx].io_wq->pring;
10040         } else {
10041                 if (unlikely(!phba->sli4_hba.els_wq))
10042                         return NULL;
10043                 piocb->hba_wqidx = 0;
10044                 return phba->sli4_hba.els_wq->pring;
10045         }
10046 }
10047 
10048 /**
10049  * lpfc_sli_issue_iocb - Wrapper function for __lpfc_sli_issue_iocb
10050  * @phba: Pointer to HBA context object.
10051  * @pring: Pointer to driver SLI ring object.
10052  * @piocb: Pointer to command iocb.
10053  * @flag: Flag indicating if this command can be put into txq.
10054  *
10055  * lpfc_sli_issue_iocb is a wrapper around __lpfc_sli_issue_iocb
10056  * function. This function gets the hbalock and calls
10057  * __lpfc_sli_issue_iocb function and will return the error returned
10058  * by __lpfc_sli_issue_iocb function. This wrapper is used by
10059  * functions which do not hold hbalock.
10060  **/
10061 int
10062 lpfc_sli_issue_iocb(struct lpfc_hba *phba, uint32_t ring_number,
10063                     struct lpfc_iocbq *piocb, uint32_t flag)
10064 {
10065         struct lpfc_sli_ring *pring;
10066         struct lpfc_queue *eq;
10067         unsigned long iflags;
10068         int rc;
10069 
10070         if (phba->sli_rev == LPFC_SLI_REV4) {
10071                 eq = phba->sli4_hba.hdwq[piocb->hba_wqidx].hba_eq;
10072 
10073                 pring = lpfc_sli4_calc_ring(phba, piocb);
10074                 if (unlikely(pring == NULL))
10075                         return IOCB_ERROR;
10076 
10077                 spin_lock_irqsave(&pring->ring_lock, iflags);
10078                 rc = __lpfc_sli_issue_iocb(phba, ring_number, piocb, flag);
10079                 spin_unlock_irqrestore(&pring->ring_lock, iflags);
10080 
10081                 lpfc_sli4_poll_eq(eq, LPFC_POLL_FASTPATH);
10082         } else {
10083                 /* For now, SLI2/3 will still use hbalock */
10084                 spin_lock_irqsave(&phba->hbalock, iflags);
10085                 rc = __lpfc_sli_issue_iocb(phba, ring_number, piocb, flag);
10086                 spin_unlock_irqrestore(&phba->hbalock, iflags);
10087         }
10088         return rc;
10089 }
10090 
10091 /**
10092  * lpfc_extra_ring_setup - Extra ring setup function
10093  * @phba: Pointer to HBA context object.
10094  *
10095  * This function is called while driver attaches with the
10096  * HBA to setup the extra ring. The extra ring is used
10097  * only when driver needs to support target mode functionality
10098  * or IP over FC functionalities.
10099  *
10100  * This function is called with no lock held. SLI3 only.
10101  **/
10102 static int
10103 lpfc_extra_ring_setup( struct lpfc_hba *phba)
10104 {
10105         struct lpfc_sli *psli;
10106         struct lpfc_sli_ring *pring;
10107 
10108         psli = &phba->sli;
10109 
10110         /* Adjust cmd/rsp ring iocb entries more evenly */
10111 
10112         /* Take some away from the FCP ring */
10113         pring = &psli->sli3_ring[LPFC_FCP_RING];
10114         pring->sli.sli3.numCiocb -= SLI2_IOCB_CMD_R1XTRA_ENTRIES;
10115         pring->sli.sli3.numRiocb -= SLI2_IOCB_RSP_R1XTRA_ENTRIES;
10116         pring->sli.sli3.numCiocb -= SLI2_IOCB_CMD_R3XTRA_ENTRIES;
10117         pring->sli.sli3.numRiocb -= SLI2_IOCB_RSP_R3XTRA_ENTRIES;
10118 
10119         /* and give them to the extra ring */
10120         pring = &psli->sli3_ring[LPFC_EXTRA_RING];
10121 
10122         pring->sli.sli3.numCiocb += SLI2_IOCB_CMD_R1XTRA_ENTRIES;
10123         pring->sli.sli3.numRiocb += SLI2_IOCB_RSP_R1XTRA_ENTRIES;
10124         pring->sli.sli3.numCiocb += SLI2_IOCB_CMD_R3XTRA_ENTRIES;
10125         pring->sli.sli3.numRiocb += SLI2_IOCB_RSP_R3XTRA_ENTRIES;
10126 
10127         /* Setup default profile for this ring */
10128         pring->iotag_max = 4096;
10129         pring->num_mask = 1;
10130         pring->prt[0].profile = 0;      /* Mask 0 */
10131         pring->prt[0].rctl = phba->cfg_multi_ring_rctl;
10132         pring->prt[0].type = phba->cfg_multi_ring_type;
10133         pring->prt[0].lpfc_sli_rcv_unsol_event = NULL;
10134         return 0;
10135 }
10136 
10137 /* lpfc_sli_abts_err_handler - handle a failed ABTS request from an SLI3 port.
10138  * @phba: Pointer to HBA context object.
10139  * @iocbq: Pointer to iocb object.
10140  *
10141  * The async_event handler calls this routine when it receives
10142  * an ASYNC_STATUS_CN event from the port.  The port generates
10143  * this event when an Abort Sequence request to an rport fails
10144  * twice in succession.  The abort could be originated by the
10145  * driver or by the port.  The ABTS could have been for an ELS
10146  * or FCP IO.  The port only generates this event when an ABTS
10147  * fails to complete after one retry.
10148  */
10149 static void
10150 lpfc_sli_abts_err_handler(struct lpfc_hba *phba,
10151                           struct lpfc_iocbq *iocbq)
10152 {
10153         struct lpfc_nodelist *ndlp = NULL;
10154         uint16_t rpi = 0, vpi = 0;
10155         struct lpfc_vport *vport = NULL;
10156 
10157         /* The rpi in the ulpContext is vport-sensitive. */
10158         vpi = iocbq->iocb.un.asyncstat.sub_ctxt_tag;
10159         rpi = iocbq->iocb.ulpContext;
10160 
10161         lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
10162                         "3092 Port generated ABTS async event "
10163                         "on vpi %d rpi %d status 0x%x\n",
10164                         vpi, rpi, iocbq->iocb.ulpStatus);
10165 
10166         vport = lpfc_find_vport_by_vpid(phba, vpi);
10167         if (!vport)
10168                 goto err_exit;
10169         ndlp = lpfc_findnode_rpi(vport, rpi);
10170         if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
10171                 goto err_exit;
10172 
10173         if (iocbq->iocb.ulpStatus == IOSTAT_LOCAL_REJECT)
10174                 lpfc_sli_abts_recover_port(vport, ndlp);
10175         return;
10176 
10177  err_exit:
10178         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
10179                         "3095 Event Context not found, no "
10180                         "action on vpi %d rpi %d status 0x%x, reason 0x%x\n",
10181                         iocbq->iocb.ulpContext, iocbq->iocb.ulpStatus,
10182                         vpi, rpi);
10183 }
10184 
10185 /* lpfc_sli4_abts_err_handler - handle a failed ABTS request from an SLI4 port.
10186  * @phba: pointer to HBA context object.
10187  * @ndlp: nodelist pointer for the impacted rport.
10188  * @axri: pointer to the wcqe containing the failed exchange.
10189  *
10190  * The driver calls this routine when it receives an ABORT_XRI_FCP CQE from the
10191  * port.  The port generates this event when an abort exchange request to an
10192  * rport fails twice in succession with no reply.  The abort could be originated
10193  * by the driver or by the port.  The ABTS could have been for an ELS or FCP IO.
10194  */
10195 void
10196 lpfc_sli4_abts_err_handler(struct lpfc_hba *phba,
10197                            struct lpfc_nodelist *ndlp,
10198                            struct sli4_wcqe_xri_aborted *axri)
10199 {
10200         struct lpfc_vport *vport;
10201         uint32_t ext_status = 0;
10202 
10203         if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
10204                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
10205                                 "3115 Node Context not found, driver "
10206                                 "ignoring abts err event\n");
10207                 return;
10208         }
10209 
10210         vport = ndlp->vport;
10211         lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
10212                         "3116 Port generated FCP XRI ABORT event on "
10213                         "vpi %d rpi %d xri x%x status 0x%x parameter x%x\n",
10214                         ndlp->vport->vpi, phba->sli4_hba.rpi_ids[ndlp->nlp_rpi],
10215                         bf_get(lpfc_wcqe_xa_xri, axri),
10216                         bf_get(lpfc_wcqe_xa_status, axri),
10217                         axri->parameter);
10218 
10219         /*
10220          * Catch the ABTS protocol failure case.  Older OCe FW releases returned
10221          * LOCAL_REJECT and 0 for a failed ABTS exchange and later OCe and
10222          * LPe FW releases returned LOCAL_REJECT and SEQUENCE_TIMEOUT.
10223          */
10224         ext_status = axri->parameter & IOERR_PARAM_MASK;
10225         if ((bf_get(lpfc_wcqe_xa_status, axri) == IOSTAT_LOCAL_REJECT) &&
10226             ((ext_status == IOERR_SEQUENCE_TIMEOUT) || (ext_status == 0)))
10227                 lpfc_sli_abts_recover_port(vport, ndlp);
10228 }
10229 
10230 /**
10231  * lpfc_sli_async_event_handler - ASYNC iocb handler function
10232  * @phba: Pointer to HBA context object.
10233  * @pring: Pointer to driver SLI ring object.
10234  * @iocbq: Pointer to iocb object.
10235  *
10236  * This function is called by the slow ring event handler
10237  * function when there is an ASYNC event iocb in the ring.
10238  * This function is called with no lock held.
10239  * Currently this function handles only temperature related
10240  * ASYNC events. The function decodes the temperature sensor
10241  * event message and posts events for the management applications.
10242  **/
10243 static void
10244 lpfc_sli_async_event_handler(struct lpfc_hba * phba,
10245         struct lpfc_sli_ring * pring, struct lpfc_iocbq * iocbq)
10246 {
10247         IOCB_t *icmd;
10248         uint16_t evt_code;
10249         struct temp_event temp_event_data;
10250         struct Scsi_Host *shost;
10251         uint32_t *iocb_w;
10252 
10253         icmd = &iocbq->iocb;
10254         evt_code = icmd->un.asyncstat.evt_code;
10255 
10256         switch (evt_code) {
10257         case ASYNC_TEMP_WARN:
10258         case ASYNC_TEMP_SAFE:
10259                 temp_event_data.data = (uint32_t) icmd->ulpContext;
10260                 temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
10261                 if (evt_code == ASYNC_TEMP_WARN) {
10262                         temp_event_data.event_code = LPFC_THRESHOLD_TEMP;
10263                         lpfc_printf_log(phba, KERN_ERR, LOG_TEMP,
10264                                 "0347 Adapter is very hot, please take "
10265                                 "corrective action. temperature : %d Celsius\n",
10266                                 (uint32_t) icmd->ulpContext);
10267                 } else {
10268                         temp_event_data.event_code = LPFC_NORMAL_TEMP;
10269                         lpfc_printf_log(phba, KERN_ERR, LOG_TEMP,
10270                                 "0340 Adapter temperature is OK now. "
10271                                 "temperature : %d Celsius\n",
10272                                 (uint32_t) icmd->ulpContext);
10273                 }
10274 
10275                 /* Send temperature change event to applications */
10276                 shost = lpfc_shost_from_vport(phba->pport);
10277                 fc_host_post_vendor_event(shost, fc_get_event_number(),
10278                         sizeof(temp_event_data), (char *) &temp_event_data,
10279                         LPFC_NL_VENDOR_ID);
10280                 break;
10281         case ASYNC_STATUS_CN:
10282                 lpfc_sli_abts_err_handler(phba, iocbq);
10283                 break;
10284         default:
10285                 iocb_w = (uint32_t *) icmd;
10286                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
10287                         "0346 Ring %d handler: unexpected ASYNC_STATUS"
10288                         " evt_code 0x%x\n"
10289                         "W0  0x%08x W1  0x%08x W2  0x%08x W3  0x%08x\n"
10290                         "W4  0x%08x W5  0x%08x W6  0x%08x W7  0x%08x\n"
10291                         "W8  0x%08x W9  0x%08x W10 0x%08x W11 0x%08x\n"
10292                         "W12 0x%08x W13 0x%08x W14 0x%08x W15 0x%08x\n",
10293                         pring->ringno, icmd->un.asyncstat.evt_code,
10294                         iocb_w[0], iocb_w[1], iocb_w[2], iocb_w[3],
10295                         iocb_w[4], iocb_w[5], iocb_w[6], iocb_w[7],
10296                         iocb_w[8], iocb_w[9], iocb_w[10], iocb_w[11],
10297                         iocb_w[12], iocb_w[13], iocb_w[14], iocb_w[15]);
10298 
10299                 break;
10300         }
10301 }
10302 
10303 
10304 /**
10305  * lpfc_sli4_setup - SLI ring setup function
10306  * @phba: Pointer to HBA context object.
10307  *
10308  * lpfc_sli_setup sets up rings of the SLI interface with
10309  * number of iocbs per ring and iotags. This function is
10310  * called while driver attach to the HBA and before the
10311  * interrupts are enabled. So there is no need for locking.
10312  *
10313  * This function always returns 0.
10314  **/
10315 int
10316 lpfc_sli4_setup(struct lpfc_hba *phba)
10317 {
10318         struct lpfc_sli_ring *pring;
10319 
10320         pring = phba->sli4_hba.els_wq->pring;
10321         pring->num_mask = LPFC_MAX_RING_MASK;
10322         pring->prt[0].profile = 0;      /* Mask 0 */
10323         pring->prt[0].rctl = FC_RCTL_ELS_REQ;
10324         pring->prt[0].type = FC_TYPE_ELS;
10325         pring->prt[0].lpfc_sli_rcv_unsol_event =
10326             lpfc_els_unsol_event;
10327         pring->prt[1].profile = 0;      /* Mask 1 */
10328         pring->prt[1].rctl = FC_RCTL_ELS_REP;
10329         pring->prt[1].type = FC_TYPE_ELS;
10330         pring->prt[1].lpfc_sli_rcv_unsol_event =
10331             lpfc_els_unsol_event;
10332         pring->prt[2].profile = 0;      /* Mask 2 */
10333         /* NameServer Inquiry */
10334         pring->prt[2].rctl = FC_RCTL_DD_UNSOL_CTL;
10335         /* NameServer */
10336         pring->prt[2].type = FC_TYPE_CT;
10337         pring->prt[2].lpfc_sli_rcv_unsol_event =
10338             lpfc_ct_unsol_event;
10339         pring->prt[3].profile = 0;      /* Mask 3 */
10340         /* NameServer response */
10341         pring->prt[3].rctl = FC_RCTL_DD_SOL_CTL;
10342         /* NameServer */
10343         pring->prt[3].type = FC_TYPE_CT;
10344         pring->prt[3].lpfc_sli_rcv_unsol_event =
10345             lpfc_ct_unsol_event;
10346         return 0;
10347 }
10348 
10349 /**
10350  * lpfc_sli_setup - SLI ring setup function
10351  * @phba: Pointer to HBA context object.
10352  *
10353  * lpfc_sli_setup sets up rings of the SLI interface with
10354  * number of iocbs per ring and iotags. This function is
10355  * called while driver attach to the HBA and before the
10356  * interrupts are enabled. So there is no need for locking.
10357  *
10358  * This function always returns 0. SLI3 only.
10359  **/
10360 int
10361 lpfc_sli_setup(struct lpfc_hba *phba)
10362 {
10363         int i, totiocbsize = 0;
10364         struct lpfc_sli *psli = &phba->sli;
10365         struct lpfc_sli_ring *pring;
10366 
10367         psli->num_rings = MAX_SLI3_CONFIGURED_RINGS;
10368         psli->sli_flag = 0;
10369 
10370         psli->iocbq_lookup = NULL;
10371         psli->iocbq_lookup_len = 0;
10372         psli->last_iotag = 0;
10373 
10374         for (i = 0; i < psli->num_rings; i++) {
10375                 pring = &psli->sli3_ring[i];
10376                 switch (i) {
10377                 case LPFC_FCP_RING:     /* ring 0 - FCP */
10378                         /* numCiocb and numRiocb are used in config_port */
10379                         pring->sli.sli3.numCiocb = SLI2_IOCB_CMD_R0_ENTRIES;
10380                         pring->sli.sli3.numRiocb = SLI2_IOCB_RSP_R0_ENTRIES;
10381                         pring->sli.sli3.numCiocb +=
10382                                 SLI2_IOCB_CMD_R1XTRA_ENTRIES;
10383                         pring->sli.sli3.numRiocb +=
10384                                 SLI2_IOCB_RSP_R1XTRA_ENTRIES;
10385                         pring->sli.sli3.numCiocb +=
10386                                 SLI2_IOCB_CMD_R3XTRA_ENTRIES;
10387                         pring->sli.sli3.numRiocb +=
10388                                 SLI2_IOCB_RSP_R3XTRA_ENTRIES;
10389                         pring->sli.sli3.sizeCiocb = (phba->sli_rev == 3) ?
10390                                                         SLI3_IOCB_CMD_SIZE :
10391                                                         SLI2_IOCB_CMD_SIZE;
10392                         pring->sli.sli3.sizeRiocb = (phba->sli_rev == 3) ?
10393                                                         SLI3_IOCB_RSP_SIZE :
10394                                                         SLI2_IOCB_RSP_SIZE;
10395                         pring->iotag_ctr = 0;
10396                         pring->iotag_max =
10397                             (phba->cfg_hba_queue_depth * 2);
10398                         pring->fast_iotag = pring->iotag_max;
10399                         pring->num_mask = 0;
10400                         break;
10401                 case LPFC_EXTRA_RING:   /* ring 1 - EXTRA */
10402                         /* numCiocb and numRiocb are used in config_port */
10403                         pring->sli.sli3.numCiocb = SLI2_IOCB_CMD_R1_ENTRIES;
10404                         pring->sli.sli3.numRiocb = SLI2_IOCB_RSP_R1_ENTRIES;
10405                         pring->sli.sli3.sizeCiocb = (phba->sli_rev == 3) ?
10406                                                         SLI3_IOCB_CMD_SIZE :
10407                                                         SLI2_IOCB_CMD_SIZE;
10408                         pring->sli.sli3.sizeRiocb = (phba->sli_rev == 3) ?
10409                                                         SLI3_IOCB_RSP_SIZE :
10410                                                         SLI2_IOCB_RSP_SIZE;
10411                         pring->iotag_max = phba->cfg_hba_queue_depth;
10412                         pring->num_mask = 0;
10413                         break;
10414                 case LPFC_ELS_RING:     /* ring 2 - ELS / CT */
10415                         /* numCiocb and numRiocb are used in config_port */
10416                         pring->sli.sli3.numCiocb = SLI2_IOCB_CMD_R2_ENTRIES;
10417                         pring->sli.sli3.numRiocb = SLI2_IOCB_RSP_R2_ENTRIES;
10418                         pring->sli.sli3.sizeCiocb = (phba->sli_rev == 3) ?
10419                                                         SLI3_IOCB_CMD_SIZE :
10420                                                         SLI2_IOCB_CMD_SIZE;
10421                         pring->sli.sli3.sizeRiocb = (phba->sli_rev == 3) ?
10422                                                         SLI3_IOCB_RSP_SIZE :
10423                                                         SLI2_IOCB_RSP_SIZE;
10424                         pring->fast_iotag = 0;
10425                         pring->iotag_ctr = 0;
10426                         pring->iotag_max = 4096;
10427                         pring->lpfc_sli_rcv_async_status =
10428                                 lpfc_sli_async_event_handler;
10429                         pring->num_mask = LPFC_MAX_RING_MASK;
10430                         pring->prt[0].profile = 0;      /* Mask 0 */
10431                         pring->prt[0].rctl = FC_RCTL_ELS_REQ;
10432                         pring->prt[0].type = FC_TYPE_ELS;
10433                         pring->prt[0].lpfc_sli_rcv_unsol_event =
10434                             lpfc_els_unsol_event;
10435                         pring->prt[1].profile = 0;      /* Mask 1 */
10436                         pring->prt[1].rctl = FC_RCTL_ELS_REP;
10437                         pring->prt[1].type = FC_TYPE_ELS;
10438                         pring->prt[1].lpfc_sli_rcv_unsol_event =
10439                             lpfc_els_unsol_event;
10440                         pring->prt[2].profile = 0;      /* Mask 2 */
10441                         /* NameServer Inquiry */
10442                         pring->prt[2].rctl = FC_RCTL_DD_UNSOL_CTL;
10443                         /* NameServer */
10444                         pring->prt[2].type = FC_TYPE_CT;
10445                         pring->prt[2].lpfc_sli_rcv_unsol_event =
10446                             lpfc_ct_unsol_event;
10447                         pring->prt[3].profile = 0;      /* Mask 3 */
10448                         /* NameServer response */
10449                         pring->prt[3].rctl = FC_RCTL_DD_SOL_CTL;
10450                         /* NameServer */
10451                         pring->prt[3].type = FC_TYPE_CT;
10452                         pring->prt[3].lpfc_sli_rcv_unsol_event =
10453                             lpfc_ct_unsol_event;
10454                         break;
10455                 }
10456                 totiocbsize += (pring->sli.sli3.numCiocb *
10457                         pring->sli.sli3.sizeCiocb) +
10458                         (pring->sli.sli3.numRiocb * pring->sli.sli3.sizeRiocb);
10459         }
10460         if (totiocbsize > MAX_SLIM_IOCB_SIZE) {
10461                 /* Too many cmd / rsp ring entries in SLI2 SLIM */
10462                 printk(KERN_ERR "%d:0462 Too many cmd / rsp ring entries in "
10463                        "SLI2 SLIM Data: x%x x%lx\n",
10464                        phba->brd_no, totiocbsize,
10465                        (unsigned long) MAX_SLIM_IOCB_SIZE);
10466         }
10467         if (phba->cfg_multi_ring_support == 2)
10468                 lpfc_extra_ring_setup(phba);
10469 
10470         return 0;
10471 }
10472 
10473 /**
10474  * lpfc_sli4_queue_init - Queue initialization function
10475  * @phba: Pointer to HBA context object.
10476  *
10477  * lpfc_sli4_queue_init sets up mailbox queues and iocb queues for each
10478  * ring. This function also initializes ring indices of each ring.
10479  * This function is called during the initialization of the SLI
10480  * interface of an HBA.
10481  * This function is called with no lock held and always returns
10482  * 1.
10483  **/
10484 void
10485 lpfc_sli4_queue_init(struct lpfc_hba *phba)
10486 {
10487         struct lpfc_sli *psli;
10488         struct lpfc_sli_ring *pring;
10489         int i;
10490 
10491         psli = &phba->sli;
10492         spin_lock_irq(&phba->hbalock);
10493         INIT_LIST_HEAD(&psli->mboxq);
10494         INIT_LIST_HEAD(&psli->mboxq_cmpl);
10495         /* Initialize list headers for txq and txcmplq as double linked lists */
10496         for (i = 0; i < phba->cfg_hdw_queue; i++) {
10497                 pring = phba->sli4_hba.hdwq[i].io_wq->pring;
10498                 pring->flag = 0;
10499                 pring->ringno = LPFC_FCP_RING;
10500                 pring->txcmplq_cnt = 0;
10501                 INIT_LIST_HEAD(&pring->txq);
10502                 INIT_LIST_HEAD(&pring->txcmplq);
10503                 INIT_LIST_HEAD(&pring->iocb_continueq);
10504                 spin_lock_init(&pring->ring_lock);
10505         }
10506         pring = phba->sli4_hba.els_wq->pring;
10507         pring->flag = 0;
10508         pring->ringno = LPFC_ELS_RING;
10509         pring->txcmplq_cnt = 0;
10510         INIT_LIST_HEAD(&pring->txq);
10511         INIT_LIST_HEAD(&pring->txcmplq);
10512         INIT_LIST_HEAD(&pring->iocb_continueq);
10513         spin_lock_init(&pring->ring_lock);
10514 
10515         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
10516                 pring = phba->sli4_hba.nvmels_wq->pring;
10517                 pring->flag = 0;
10518                 pring->ringno = LPFC_ELS_RING;
10519                 pring->txcmplq_cnt = 0;
10520                 INIT_LIST_HEAD(&pring->txq);
10521                 INIT_LIST_HEAD(&pring->txcmplq);
10522                 INIT_LIST_HEAD(&pring->iocb_continueq);
10523                 spin_lock_init(&pring->ring_lock);
10524         }
10525 
10526         spin_unlock_irq(&phba->hbalock);
10527 }
10528 
10529 /**
10530  * lpfc_sli_queue_init - Queue initialization function
10531  * @phba: Pointer to HBA context object.
10532  *
10533  * lpfc_sli_queue_init sets up mailbox queues and iocb queues for each
10534  * ring. This function also initializes ring indices of each ring.
10535  * This function is called during the initialization of the SLI
10536  * interface of an HBA.
10537  * This function is called with no lock held and always returns
10538  * 1.
10539  **/
10540 void
10541 lpfc_sli_queue_init(struct lpfc_hba *phba)
10542 {
10543         struct lpfc_sli *psli;
10544         struct lpfc_sli_ring *pring;
10545         int i;
10546 
10547         psli = &phba->sli;
10548         spin_lock_irq(&phba->hbalock);
10549         INIT_LIST_HEAD(&psli->mboxq);
10550         INIT_LIST_HEAD(&psli->mboxq_cmpl);
10551         /* Initialize list headers for txq and txcmplq as double linked lists */
10552         for (i = 0; i < psli->num_rings; i++) {
10553                 pring = &psli->sli3_ring[i];
10554                 pring->ringno = i;
10555                 pring->sli.sli3.next_cmdidx  = 0;
10556                 pring->sli.sli3.local_getidx = 0;
10557                 pring->sli.sli3.cmdidx = 0;
10558                 INIT_LIST_HEAD(&pring->iocb_continueq);
10559                 INIT_LIST_HEAD(&pring->iocb_continue_saveq);
10560                 INIT_LIST_HEAD(&pring->postbufq);
10561                 pring->flag = 0;
10562                 INIT_LIST_HEAD(&pring->txq);
10563                 INIT_LIST_HEAD(&pring->txcmplq);
10564                 spin_lock_init(&pring->ring_lock);
10565         }
10566         spin_unlock_irq(&phba->hbalock);
10567 }
10568 
10569 /**
10570  * lpfc_sli_mbox_sys_flush - Flush mailbox command sub-system
10571  * @phba: Pointer to HBA context object.
10572  *
10573  * This routine flushes the mailbox command subsystem. It will unconditionally
10574  * flush all the mailbox commands in the three possible stages in the mailbox
10575  * command sub-system: pending mailbox command queue; the outstanding mailbox
10576  * command; and completed mailbox command queue. It is caller's responsibility
10577  * to make sure that the driver is in the proper state to flush the mailbox
10578  * command sub-system. Namely, the posting of mailbox commands into the
10579  * pending mailbox command queue from the various clients must be stopped;
10580  * either the HBA is in a state that it will never works on the outstanding
10581  * mailbox command (such as in EEH or ERATT conditions) or the outstanding
10582  * mailbox command has been completed.
10583  **/
10584 static void
10585 lpfc_sli_mbox_sys_flush(struct lpfc_hba *phba)
10586 {
10587         LIST_HEAD(completions);
10588         struct lpfc_sli *psli = &phba->sli;
10589         LPFC_MBOXQ_t *pmb;
10590         unsigned long iflag;
10591 
10592         /* Disable softirqs, including timers from obtaining phba->hbalock */
10593         local_bh_disable();
10594 
10595         /* Flush all the mailbox commands in the mbox system */
10596         spin_lock_irqsave(&phba->hbalock, iflag);
10597 
10598         /* The pending mailbox command queue */
10599         list_splice_init(&phba->sli.mboxq, &completions);
10600         /* The outstanding active mailbox command */
10601         if (psli->mbox_active) {
10602                 list_add_tail(&psli->mbox_active->list, &completions);
10603                 psli->mbox_active = NULL;
10604                 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
10605         }
10606         /* The completed mailbox command queue */
10607         list_splice_init(&phba->sli.mboxq_cmpl, &completions);
10608         spin_unlock_irqrestore(&phba->hbalock, iflag);
10609 
10610         /* Enable softirqs again, done with phba->hbalock */
10611         local_bh_enable();
10612 
10613         /* Return all flushed mailbox commands with MBX_NOT_FINISHED status */
10614         while (!list_empty(&completions)) {
10615                 list_remove_head(&completions, pmb, LPFC_MBOXQ_t, list);
10616                 pmb->u.mb.mbxStatus = MBX_NOT_FINISHED;
10617                 if (pmb->mbox_cmpl)
10618                         pmb->mbox_cmpl(phba, pmb);
10619         }
10620 }
10621 
10622 /**
10623  * lpfc_sli_host_down - Vport cleanup function
10624  * @vport: Pointer to virtual port object.
10625  *
10626  * lpfc_sli_host_down is called to clean up the resources
10627  * associated with a vport before destroying virtual
10628  * port data structures.
10629  * This function does following operations:
10630  * - Free discovery resources associated with this virtual
10631  *   port.
10632  * - Free iocbs associated with this virtual port in
10633  *   the txq.
10634  * - Send abort for all iocb commands associated with this
10635  *   vport in txcmplq.
10636  *
10637  * This function is called with no lock held and always returns 1.
10638  **/
10639 int
10640 lpfc_sli_host_down(struct lpfc_vport *vport)
10641 {
10642         LIST_HEAD(completions);
10643         struct lpfc_hba *phba = vport->phba;
10644         struct lpfc_sli *psli = &phba->sli;
10645         struct lpfc_queue *qp = NULL;
10646         struct lpfc_sli_ring *pring;
10647         struct lpfc_iocbq *iocb, *next_iocb;
10648         int i;
10649         unsigned long flags = 0;
10650         uint16_t prev_pring_flag;
10651 
10652         lpfc_cleanup_discovery_resources(vport);
10653 
10654         spin_lock_irqsave(&phba->hbalock, flags);
10655 
10656         /*
10657          * Error everything on the txq since these iocbs
10658          * have not been given to the FW yet.
10659          * Also issue ABTS for everything on the txcmplq
10660          */
10661         if (phba->sli_rev != LPFC_SLI_REV4) {
10662                 for (i = 0; i < psli->num_rings; i++) {
10663                         pring = &psli->sli3_ring[i];
10664                         prev_pring_flag = pring->flag;
10665                         /* Only slow rings */
10666                         if (pring->ringno == LPFC_ELS_RING) {
10667                                 pring->flag |= LPFC_DEFERRED_RING_EVENT;
10668                                 /* Set the lpfc data pending flag */
10669                                 set_bit(LPFC_DATA_READY, &phba->data_flags);
10670                         }
10671                         list_for_each_entry_safe(iocb, next_iocb,
10672                                                  &pring->txq, list) {
10673                                 if (iocb->vport != vport)
10674                                         continue;
10675                                 list_move_tail(&iocb->list, &completions);
10676                         }
10677                         list_for_each_entry_safe(iocb, next_iocb,
10678                                                  &pring->txcmplq, list) {
10679                                 if (iocb->vport != vport)
10680                                         continue;
10681                                 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
10682                         }
10683                         pring->flag = prev_pring_flag;
10684                 }
10685         } else {
10686                 list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {
10687                         pring = qp->pring;
10688                         if (!pring)
10689                                 continue;
10690                         if (pring == phba->sli4_hba.els_wq->pring) {
10691                                 pring->flag |= LPFC_DEFERRED_RING_EVENT;
10692                                 /* Set the lpfc data pending flag */
10693                                 set_bit(LPFC_DATA_READY, &phba->data_flags);
10694                         }
10695                         prev_pring_flag = pring->flag;
10696                         spin_lock_irq(&pring->ring_lock);
10697                         list_for_each_entry_safe(iocb, next_iocb,
10698                                                  &pring->txq, list) {
10699                                 if (iocb->vport != vport)
10700                                         continue;
10701                                 list_move_tail(&iocb->list, &completions);
10702                         }
10703                         spin_unlock_irq(&pring->ring_lock);
10704                         list_for_each_entry_safe(iocb, next_iocb,
10705                                                  &pring->txcmplq, list) {
10706                                 if (iocb->vport != vport)
10707                                         continue;
10708                                 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
10709                         }
10710                         pring->flag = prev_pring_flag;
10711                 }
10712         }
10713         spin_unlock_irqrestore(&phba->hbalock, flags);
10714 
10715         /* Cancel all the IOCBs from the completions list */
10716         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
10717                               IOERR_SLI_DOWN);
10718         return 1;
10719 }
10720 
10721 /**
10722  * lpfc_sli_hba_down - Resource cleanup function for the HBA
10723  * @phba: Pointer to HBA context object.
10724  *
10725  * This function cleans up all iocb, buffers, mailbox commands
10726  * while shutting down the HBA. This function is called with no
10727  * lock held and always returns 1.
10728  * This function does the following to cleanup driver resources:
10729  * - Free discovery resources for each virtual port
10730  * - Cleanup any pending fabric iocbs
10731  * - Iterate through the iocb txq and free each entry
10732  *   in the list.
10733  * - Free up any buffer posted to the HBA
10734  * - Free mailbox commands in the mailbox queue.
10735  **/
10736 int
10737 lpfc_sli_hba_down(struct lpfc_hba *phba)
10738 {
10739         LIST_HEAD(completions);
10740         struct lpfc_sli *psli = &phba->sli;
10741         struct lpfc_queue *qp = NULL;
10742         struct lpfc_sli_ring *pring;
10743         struct lpfc_dmabuf *buf_ptr;
10744         unsigned long flags = 0;
10745         int i;
10746 
10747         /* Shutdown the mailbox command sub-system */
10748         lpfc_sli_mbox_sys_shutdown(phba, LPFC_MBX_WAIT);
10749 
10750         lpfc_hba_down_prep(phba);
10751 
10752         /* Disable softirqs, including timers from obtaining phba->hbalock */
10753         local_bh_disable();
10754 
10755         lpfc_fabric_abort_hba(phba);
10756 
10757         spin_lock_irqsave(&phba->hbalock, flags);
10758 
10759         /*
10760          * Error everything on the txq since these iocbs
10761          * have not been given to the FW yet.
10762          */
10763         if (phba->sli_rev != LPFC_SLI_REV4) {
10764                 for (i = 0; i < psli->num_rings; i++) {
10765                         pring = &psli->sli3_ring[i];
10766                         /* Only slow rings */
10767                         if (pring->ringno == LPFC_ELS_RING) {
10768                                 pring->flag |= LPFC_DEFERRED_RING_EVENT;
10769                                 /* Set the lpfc data pending flag */
10770                                 set_bit(LPFC_DATA_READY, &phba->data_flags);
10771                         }
10772                         list_splice_init(&pring->txq, &completions);
10773                 }
10774         } else {
10775                 list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {
10776                         pring = qp->pring;
10777                         if (!pring)
10778                                 continue;
10779                         spin_lock(&pring->ring_lock);
10780                         list_splice_init(&pring->txq, &completions);
10781                         spin_unlock(&pring->ring_lock);
10782                         if (pring == phba->sli4_hba.els_wq->pring) {
10783                                 pring->flag |= LPFC_DEFERRED_RING_EVENT;
10784                                 /* Set the lpfc data pending flag */
10785                                 set_bit(LPFC_DATA_READY, &phba->data_flags);
10786                         }
10787                 }
10788         }
10789         spin_unlock_irqrestore(&phba->hbalock, flags);
10790 
10791         /* Cancel all the IOCBs from the completions list */
10792         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
10793                               IOERR_SLI_DOWN);
10794 
10795         spin_lock_irqsave(&phba->hbalock, flags);
10796         list_splice_init(&phba->elsbuf, &completions);
10797         phba->elsbuf_cnt = 0;
10798         phba->elsbuf_prev_cnt = 0;
10799         spin_unlock_irqrestore(&phba->hbalock, flags);
10800 
10801         while (!list_empty(&completions)) {
10802                 list_remove_head(&completions, buf_ptr,
10803                         struct lpfc_dmabuf, list);
10804                 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
10805                 kfree(buf_ptr);
10806         }
10807 
10808         /* Enable softirqs again, done with phba->hbalock */
10809         local_bh_enable();
10810 
10811         /* Return any active mbox cmds */
10812         del_timer_sync(&psli->mbox_tmo);
10813 
10814         spin_lock_irqsave(&phba->pport->work_port_lock, flags);
10815         phba->pport->work_port_events &= ~WORKER_MBOX_TMO;
10816         spin_unlock_irqrestore(&phba->pport->work_port_lock, flags);
10817 
10818         return 1;
10819 }
10820 
10821 /**
10822  * lpfc_sli_pcimem_bcopy - SLI memory copy function
10823  * @srcp: Source memory pointer.
10824  * @destp: Destination memory pointer.
10825  * @cnt: Number of words required to be copied.
10826  *
10827  * This function is used for copying data between driver memory
10828  * and the SLI memory. This function also changes the endianness
10829  * of each word if native endianness is different from SLI
10830  * endianness. This function can be called with or without
10831  * lock.
10832  **/
10833 void
10834 lpfc_sli_pcimem_bcopy(void *srcp, void *destp, uint32_t cnt)
10835 {
10836         uint32_t *src = srcp;
10837         uint32_t *dest = destp;
10838         uint32_t ldata;
10839         int i;
10840 
10841         for (i = 0; i < (int)cnt; i += sizeof (uint32_t)) {
10842                 ldata = *src;
10843                 ldata = le32_to_cpu(ldata);
10844                 *dest = ldata;
10845                 src++;
10846                 dest++;
10847         }
10848 }
10849 
10850 
10851 /**
10852  * lpfc_sli_bemem_bcopy - SLI memory copy function
10853  * @srcp: Source memory pointer.
10854  * @destp: Destination memory pointer.
10855  * @cnt: Number of words required to be copied.
10856  *
10857  * This function is used for copying data between a data structure
10858  * with big endian representation to local endianness.
10859  * This function can be called with or without lock.
10860  **/
10861 void
10862 lpfc_sli_bemem_bcopy(void *srcp, void *destp, uint32_t cnt)
10863 {
10864         uint32_t *src = srcp;
10865         uint32_t *dest = destp;
10866         uint32_t ldata;
10867         int i;
10868 
10869         for (i = 0; i < (int)cnt; i += sizeof(uint32_t)) {
10870                 ldata = *src;
10871                 ldata = be32_to_cpu(ldata);
10872                 *dest = ldata;
10873                 src++;
10874                 dest++;
10875         }
10876 }
10877 
10878 /**
10879  * lpfc_sli_ringpostbuf_put - Function to add a buffer to postbufq
10880  * @phba: Pointer to HBA context object.
10881  * @pring: Pointer to driver SLI ring object.
10882  * @mp: Pointer to driver buffer object.
10883  *
10884  * This function is called with no lock held.
10885  * It always return zero after adding the buffer to the postbufq
10886  * buffer list.
10887  **/
10888 int
10889 lpfc_sli_ringpostbuf_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
10890                          struct lpfc_dmabuf *mp)
10891 {
10892         /* Stick struct lpfc_dmabuf at end of postbufq so driver can look it up
10893            later */
10894         spin_lock_irq(&phba->hbalock);
10895         list_add_tail(&mp->list, &pring->postbufq);
10896         pring->postbufq_cnt++;
10897         spin_unlock_irq(&phba->hbalock);
10898         return 0;
10899 }
10900 
10901 /**
10902  * lpfc_sli_get_buffer_tag - allocates a tag for a CMD_QUE_XRI64_CX buffer
10903  * @phba: Pointer to HBA context object.
10904  *
10905  * When HBQ is enabled, buffers are searched based on tags. This function
10906  * allocates a tag for buffer posted using CMD_QUE_XRI64_CX iocb. The
10907  * tag is bit wise or-ed with QUE_BUFTAG_BIT to make sure that the tag
10908  * does not conflict with tags of buffer posted for unsolicited events.
10909  * The function returns the allocated tag. The function is called with
10910  * no locks held.
10911  **/
10912 uint32_t
10913 lpfc_sli_get_buffer_tag(struct lpfc_hba *phba)
10914 {
10915         spin_lock_irq(&phba->hbalock);
10916         phba->buffer_tag_count++;
10917         /*
10918          * Always set the QUE_BUFTAG_BIT to distiguish between
10919          * a tag assigned by HBQ.
10920          */
10921         phba->buffer_tag_count |= QUE_BUFTAG_BIT;
10922         spin_unlock_irq(&phba->hbalock);
10923         return phba->buffer_tag_count;
10924 }
10925 
10926 /**
10927  * lpfc_sli_ring_taggedbuf_get - find HBQ buffer associated with given tag
10928  * @phba: Pointer to HBA context object.
10929  * @pring: Pointer to driver SLI ring object.
10930  * @tag: Buffer tag.
10931  *
10932  * Buffers posted using CMD_QUE_XRI64_CX iocb are in pring->postbufq
10933  * list. After HBA DMA data to these buffers, CMD_IOCB_RET_XRI64_CX
10934  * iocb is posted to the response ring with the tag of the buffer.
10935  * This function searches the pring->postbufq list using the tag
10936  * to find buffer associated with CMD_IOCB_RET_XRI64_CX
10937  * iocb. If the buffer is found then lpfc_dmabuf object of the
10938  * buffer is returned to the caller else NULL is returned.
10939  * This function is called with no lock held.
10940  **/
10941 struct lpfc_dmabuf *
10942 lpfc_sli_ring_taggedbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
10943                         uint32_t tag)
10944 {
10945         struct lpfc_dmabuf *mp, *next_mp;
10946         struct list_head *slp = &pring->postbufq;
10947 
10948         /* Search postbufq, from the beginning, looking for a match on tag */
10949         spin_lock_irq(&phba->hbalock);
10950         list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
10951                 if (mp->buffer_tag == tag) {
10952                         list_del_init(&mp->list);
10953                         pring->postbufq_cnt--;
10954                         spin_unlock_irq(&phba->hbalock);
10955                         return mp;
10956                 }
10957         }
10958 
10959         spin_unlock_irq(&phba->hbalock);
10960         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
10961                         "0402 Cannot find virtual addr for buffer tag on "
10962                         "ring %d Data x%lx x%px x%px x%x\n",
10963                         pring->ringno, (unsigned long) tag,
10964                         slp->next, slp->prev, pring->postbufq_cnt);
10965 
10966         return NULL;
10967 }
10968 
10969 /**
10970  * lpfc_sli_ringpostbuf_get - search buffers for unsolicited CT and ELS events
10971  * @phba: Pointer to HBA context object.
10972  * @pring: Pointer to driver SLI ring object.
10973  * @phys: DMA address of the buffer.
10974  *
10975  * This function searches the buffer list using the dma_address
10976  * of unsolicited event to find the driver's lpfc_dmabuf object
10977  * corresponding to the dma_address. The function returns the
10978  * lpfc_dmabuf object if a buffer is found else it returns NULL.
10979  * This function is called by the ct and els unsolicited event
10980  * handlers to get the buffer associated with the unsolicited
10981  * event.
10982  *
10983  * This function is called with no lock held.
10984  **/
10985 struct lpfc_dmabuf *
10986 lpfc_sli_ringpostbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
10987                          dma_addr_t phys)
10988 {
10989         struct lpfc_dmabuf *mp, *next_mp;
10990         struct list_head *slp = &pring->postbufq;
10991 
10992         /* Search postbufq, from the beginning, looking for a match on phys */
10993         spin_lock_irq(&phba->hbalock);
10994         list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
10995                 if (mp->phys == phys) {
10996                         list_del_init(&mp->list);
10997                         pring->postbufq_cnt--;
10998                         spin_unlock_irq(&phba->hbalock);
10999                         return mp;
11000                 }
11001         }
11002 
11003         spin_unlock_irq(&phba->hbalock);
11004         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
11005                         "0410 Cannot find virtual addr for mapped buf on "
11006                         "ring %d Data x%llx x%px x%px x%x\n",
11007                         pring->ringno, (unsigned long long)phys,
11008                         slp->next, slp->prev, pring->postbufq_cnt);
11009         return NULL;
11010 }
11011 
11012 /**
11013  * lpfc_sli_abort_els_cmpl - Completion handler for the els abort iocbs
11014  * @phba: Pointer to HBA context object.
11015  * @cmdiocb: Pointer to driver command iocb object.
11016  * @rspiocb: Pointer to driver response iocb object.
11017  *
11018  * This function is the completion handler for the abort iocbs for
11019  * ELS commands. This function is called from the ELS ring event
11020  * handler with no lock held. This function frees memory resources
11021  * associated with the abort iocb.
11022  **/
11023 static void
11024 lpfc_sli_abort_els_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
11025                         struct lpfc_iocbq *rspiocb)
11026 {
11027         IOCB_t *irsp = &rspiocb->iocb;
11028         uint16_t abort_iotag, abort_context;
11029         struct lpfc_iocbq *abort_iocb = NULL;
11030 
11031         if (irsp->ulpStatus) {
11032 
11033                 /*
11034                  * Assume that the port already completed and returned, or
11035                  * will return the iocb. Just Log the message.
11036                  */
11037                 abort_context = cmdiocb->iocb.un.acxri.abortContextTag;
11038                 abort_iotag = cmdiocb->iocb.un.acxri.abortIoTag;
11039 
11040                 spin_lock_irq(&phba->hbalock);
11041                 if (phba->sli_rev < LPFC_SLI_REV4) {
11042                         if (irsp->ulpCommand == CMD_ABORT_XRI_CX &&
11043                             irsp->ulpStatus == IOSTAT_LOCAL_REJECT &&
11044                             irsp->un.ulpWord[4] == IOERR_ABORT_REQUESTED) {
11045                                 spin_unlock_irq(&phba->hbalock);
11046                                 goto release_iocb;
11047                         }
11048                         if (abort_iotag != 0 &&
11049                                 abort_iotag <= phba->sli.last_iotag)
11050                                 abort_iocb =
11051                                         phba->sli.iocbq_lookup[abort_iotag];
11052                 } else
11053                         /* For sli4 the abort_tag is the XRI,
11054                          * so the abort routine puts the iotag  of the iocb
11055                          * being aborted in the context field of the abort
11056                          * IOCB.
11057                          */
11058                         abort_iocb = phba->sli.iocbq_lookup[abort_context];
11059 
11060                 lpfc_printf_log(phba, KERN_WARNING, LOG_ELS | LOG_SLI,
11061                                 "0327 Cannot abort els iocb x%px "
11062                                 "with tag %x context %x, abort status %x, "
11063                                 "abort code %x\n",
11064                                 abort_iocb, abort_iotag, abort_context,
11065                                 irsp->ulpStatus, irsp->un.ulpWord[4]);
11066 
11067                 spin_unlock_irq(&phba->hbalock);
11068         }
11069 release_iocb:
11070         lpfc_sli_release_iocbq(phba, cmdiocb);
11071         return;
11072 }
11073 
11074 /**
11075  * lpfc_ignore_els_cmpl - Completion handler for aborted ELS command
11076  * @phba: Pointer to HBA context object.
11077  * @cmdiocb: Pointer to driver command iocb object.
11078  * @rspiocb: Pointer to driver response iocb object.
11079  *
11080  * The function is called from SLI ring event handler with no
11081  * lock held. This function is the completion handler for ELS commands
11082  * which are aborted. The function frees memory resources used for
11083  * the aborted ELS commands.
11084  **/
11085 static void
11086 lpfc_ignore_els_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
11087                      struct lpfc_iocbq *rspiocb)
11088 {
11089         IOCB_t *irsp = &rspiocb->iocb;
11090 
11091         /* ELS cmd tag <ulpIoTag> completes */
11092         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
11093                         "0139 Ignoring ELS cmd tag x%x completion Data: "
11094                         "x%x x%x x%x\n",
11095                         irsp->ulpIoTag, irsp->ulpStatus,
11096                         irsp->un.ulpWord[4], irsp->ulpTimeout);
11097         if (cmdiocb->iocb.ulpCommand == CMD_GEN_REQUEST64_CR)
11098                 lpfc_ct_free_iocb(phba, cmdiocb);
11099         else
11100                 lpfc_els_free_iocb(phba, cmdiocb);
11101         return;
11102 }
11103 
11104 /**
11105  * lpfc_sli_abort_iotag_issue - Issue abort for a command iocb
11106  * @phba: Pointer to HBA context object.
11107  * @pring: Pointer to driver SLI ring object.
11108  * @cmdiocb: Pointer to driver command iocb object.
11109  *
11110  * This function issues an abort iocb for the provided command iocb down to
11111  * the port. Other than the case the outstanding command iocb is an abort
11112  * request, this function issues abort out unconditionally. This function is
11113  * called with hbalock held. The function returns 0 when it fails due to
11114  * memory allocation failure or when the command iocb is an abort request.
11115  **/
11116 static int
11117 lpfc_sli_abort_iotag_issue(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
11118                            struct lpfc_iocbq *cmdiocb)
11119 {
11120         struct lpfc_vport *vport = cmdiocb->vport;
11121         struct lpfc_iocbq *abtsiocbp;
11122         IOCB_t *icmd = NULL;
11123         IOCB_t *iabt = NULL;
11124         int retval;
11125         unsigned long iflags;
11126         struct lpfc_nodelist *ndlp;
11127 
11128         lockdep_assert_held(&phba->hbalock);
11129 
11130         /*
11131          * There are certain command types we don't want to abort.  And we
11132          * don't want to abort commands that are already in the process of
11133          * being aborted.
11134          */
11135         icmd = &cmdiocb->iocb;
11136         if (icmd->ulpCommand == CMD_ABORT_XRI_CN ||
11137             icmd->ulpCommand == CMD_CLOSE_XRI_CN ||
11138             (cmdiocb->iocb_flag & LPFC_DRIVER_ABORTED) != 0)
11139                 return 0;
11140 
11141         /* issue ABTS for this IOCB based on iotag */
11142         abtsiocbp = __lpfc_sli_get_iocbq(phba);
11143         if (abtsiocbp == NULL)
11144                 return 0;
11145 
11146         /* This signals the response to set the correct status
11147          * before calling the completion handler
11148          */
11149         cmdiocb->iocb_flag |= LPFC_DRIVER_ABORTED;
11150 
11151         iabt = &abtsiocbp->iocb;
11152         iabt->un.acxri.abortType = ABORT_TYPE_ABTS;
11153         iabt->un.acxri.abortContextTag = icmd->ulpContext;
11154         if (phba->sli_rev == LPFC_SLI_REV4) {
11155                 iabt->un.acxri.abortIoTag = cmdiocb->sli4_xritag;
11156                 iabt->un.acxri.abortContextTag = cmdiocb->iotag;
11157         } else {
11158                 iabt->un.acxri.abortIoTag = icmd->ulpIoTag;
11159                 if (pring->ringno == LPFC_ELS_RING) {
11160                         ndlp = (struct lpfc_nodelist *)(cmdiocb->context1);
11161                         iabt->un.acxri.abortContextTag = ndlp->nlp_rpi;
11162                 }
11163         }
11164         iabt->ulpLe = 1;
11165         iabt->ulpClass = icmd->ulpClass;
11166 
11167         /* ABTS WQE must go to the same WQ as the WQE to be aborted */
11168         abtsiocbp->hba_wqidx = cmdiocb->hba_wqidx;
11169         if (cmdiocb->iocb_flag & LPFC_IO_FCP)
11170                 abtsiocbp->iocb_flag |= LPFC_USE_FCPWQIDX;
11171         if (cmdiocb->iocb_flag & LPFC_IO_FOF)
11172                 abtsiocbp->iocb_flag |= LPFC_IO_FOF;
11173 
11174         if (phba->link_state >= LPFC_LINK_UP)
11175                 iabt->ulpCommand = CMD_ABORT_XRI_CN;
11176         else
11177                 iabt->ulpCommand = CMD_CLOSE_XRI_CN;
11178 
11179         abtsiocbp->iocb_cmpl = lpfc_sli_abort_els_cmpl;
11180         abtsiocbp->vport = vport;
11181 
11182         lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
11183                          "0339 Abort xri x%x, original iotag x%x, "
11184                          "abort cmd iotag x%x\n",
11185                          iabt->un.acxri.abortIoTag,
11186                          iabt->un.acxri.abortContextTag,
11187                          abtsiocbp->iotag);
11188 
11189         if (phba->sli_rev == LPFC_SLI_REV4) {
11190                 pring = lpfc_sli4_calc_ring(phba, abtsiocbp);
11191                 if (unlikely(pring == NULL))
11192                         return 0;
11193                 /* Note: both hbalock and ring_lock need to be set here */
11194                 spin_lock_irqsave(&pring->ring_lock, iflags);
11195                 retval = __lpfc_sli_issue_iocb(phba, pring->ringno,
11196                         abtsiocbp, 0);
11197                 spin_unlock_irqrestore(&pring->ring_lock, iflags);
11198         } else {
11199                 retval = __lpfc_sli_issue_iocb(phba, pring->ringno,
11200                         abtsiocbp, 0);
11201         }
11202 
11203         if (retval)
11204                 __lpfc_sli_release_iocbq(phba, abtsiocbp);
11205 
11206         /*
11207          * Caller to this routine should check for IOCB_ERROR
11208          * and handle it properly.  This routine no longer removes
11209          * iocb off txcmplq and call compl in case of IOCB_ERROR.
11210          */
11211         return retval;
11212 }
11213 
11214 /**
11215  * lpfc_sli_issue_abort_iotag - Abort function for a command iocb
11216  * @phba: Pointer to HBA context object.
11217  * @pring: Pointer to driver SLI ring object.
11218  * @cmdiocb: Pointer to driver command iocb object.
11219  *
11220  * This function issues an abort iocb for the provided command iocb. In case
11221  * of unloading, the abort iocb will not be issued to commands on the ELS
11222  * ring. Instead, the callback function shall be changed to those commands
11223  * so that nothing happens when them finishes. This function is called with
11224  * hbalock held. The function returns 0 when the command iocb is an abort
11225  * request.
11226  **/
11227 int
11228 lpfc_sli_issue_abort_iotag(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
11229                            struct lpfc_iocbq *cmdiocb)
11230 {
11231         struct lpfc_vport *vport = cmdiocb->vport;
11232         int retval = IOCB_ERROR;
11233         IOCB_t *icmd = NULL;
11234 
11235         lockdep_assert_held(&phba->hbalock);
11236 
11237         /*
11238          * There are certain command types we don't want to abort.  And we
11239          * don't want to abort commands that are already in the process of
11240          * being aborted.
11241          */
11242         icmd = &cmdiocb->iocb;
11243         if (icmd->ulpCommand == CMD_ABORT_XRI_CN ||
11244             icmd->ulpCommand == CMD_CLOSE_XRI_CN ||
11245             (cmdiocb->iocb_flag & LPFC_DRIVER_ABORTED) != 0)
11246                 return 0;
11247 
11248         if (!pring) {
11249                 if (cmdiocb->iocb_flag & LPFC_IO_FABRIC)
11250                         cmdiocb->fabric_iocb_cmpl = lpfc_ignore_els_cmpl;
11251                 else
11252                         cmdiocb->iocb_cmpl = lpfc_ignore_els_cmpl;
11253                 goto abort_iotag_exit;
11254         }
11255 
11256         /*
11257          * If we're unloading, don't abort iocb on the ELS ring, but change
11258          * the callback so that nothing happens when it finishes.
11259          */
11260         if ((vport->load_flag & FC_UNLOADING) &&
11261             (pring->ringno == LPFC_ELS_RING)) {
11262                 if (cmdiocb->iocb_flag & LPFC_IO_FABRIC)
11263                         cmdiocb->fabric_iocb_cmpl = lpfc_ignore_els_cmpl;
11264                 else
11265                         cmdiocb->iocb_cmpl = lpfc_ignore_els_cmpl;
11266                 goto abort_iotag_exit;
11267         }
11268 
11269         /* Now, we try to issue the abort to the cmdiocb out */
11270         retval = lpfc_sli_abort_iotag_issue(phba, pring, cmdiocb);
11271 
11272 abort_iotag_exit:
11273         /*
11274          * Caller to this routine should check for IOCB_ERROR
11275          * and handle it properly.  This routine no longer removes
11276          * iocb off txcmplq and call compl in case of IOCB_ERROR.
11277          */
11278         return retval;
11279 }
11280 
11281 /**
11282  * lpfc_sli_hba_iocb_abort - Abort all iocbs to an hba.
11283  * @phba: pointer to lpfc HBA data structure.
11284  *
11285  * This routine will abort all pending and outstanding iocbs to an HBA.
11286  **/
11287 void
11288 lpfc_sli_hba_iocb_abort(struct lpfc_hba *phba)
11289 {
11290         struct lpfc_sli *psli = &phba->sli;
11291         struct lpfc_sli_ring *pring;
11292         struct lpfc_queue *qp = NULL;
11293         int i;
11294 
11295         if (phba->sli_rev != LPFC_SLI_REV4) {
11296                 for (i = 0; i < psli->num_rings; i++) {
11297                         pring = &psli->sli3_ring[i];
11298                         lpfc_sli_abort_iocb_ring(phba, pring);
11299                 }
11300                 return;
11301         }
11302         list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {
11303                 pring = qp->pring;
11304                 if (!pring)
11305                         continue;
11306                 lpfc_sli_abort_iocb_ring(phba, pring);
11307         }
11308 }
11309 
11310 /**
11311  * lpfc_sli_validate_fcp_iocb - find commands associated with a vport or LUN
11312  * @iocbq: Pointer to driver iocb object.
11313  * @vport: Pointer to driver virtual port object.
11314  * @tgt_id: SCSI ID of the target.
11315  * @lun_id: LUN ID of the scsi device.
11316  * @ctx_cmd: LPFC_CTX_LUN/LPFC_CTX_TGT/LPFC_CTX_HOST
11317  *
11318  * This function acts as an iocb filter for functions which abort or count
11319  * all FCP iocbs pending on a lun/SCSI target/SCSI host. It will return
11320  * 0 if the filtering criteria is met for the given iocb and will return
11321  * 1 if the filtering criteria is not met.
11322  * If ctx_cmd == LPFC_CTX_LUN, the function returns 0 only if the
11323  * given iocb is for the SCSI device specified by vport, tgt_id and
11324  * lun_id parameter.
11325  * If ctx_cmd == LPFC_CTX_TGT,  the function returns 0 only if the
11326  * given iocb is for the SCSI target specified by vport and tgt_id
11327  * parameters.
11328  * If ctx_cmd == LPFC_CTX_HOST, the function returns 0 only if the
11329  * given iocb is for the SCSI host associated with the given vport.
11330  * This function is called with no locks held.
11331  **/
11332 static int
11333 lpfc_sli_validate_fcp_iocb(struct lpfc_iocbq *iocbq, struct lpfc_vport *vport,
11334                            uint16_t tgt_id, uint64_t lun_id,
11335                            lpfc_ctx_cmd ctx_cmd)
11336 {
11337         struct lpfc_io_buf *lpfc_cmd;
11338         int rc = 1;
11339 
11340         if (iocbq->vport != vport)
11341                 return rc;
11342 
11343         if (!(iocbq->iocb_flag &  LPFC_IO_FCP) ||
11344             !(iocbq->iocb_flag & LPFC_IO_ON_TXCMPLQ))
11345                 return rc;
11346 
11347         lpfc_cmd = container_of(iocbq, struct lpfc_io_buf, cur_iocbq);
11348 
11349         if (lpfc_cmd->pCmd == NULL)
11350                 return rc;
11351 
11352         switch (ctx_cmd) {
11353         case LPFC_CTX_LUN:
11354                 if ((lpfc_cmd->rdata) && (lpfc_cmd->rdata->pnode) &&
11355                     (lpfc_cmd->rdata->pnode->nlp_sid == tgt_id) &&
11356                     (scsilun_to_int(&lpfc_cmd->fcp_cmnd->fcp_lun) == lun_id))
11357                         rc = 0;
11358                 break;
11359         case LPFC_CTX_TGT:
11360                 if ((lpfc_cmd->rdata) && (lpfc_cmd->rdata->pnode) &&
11361                     (lpfc_cmd->rdata->pnode->nlp_sid == tgt_id))
11362                         rc = 0;
11363                 break;
11364         case LPFC_CTX_HOST:
11365                 rc = 0;
11366                 break;
11367         default:
11368                 printk(KERN_ERR "%s: Unknown context cmd type, value %d\n",
11369                         __func__, ctx_cmd);
11370                 break;
11371         }
11372 
11373         return rc;
11374 }
11375 
11376 /**
11377  * lpfc_sli_sum_iocb - Function to count the number of FCP iocbs pending
11378  * @vport: Pointer to virtual port.
11379  * @tgt_id: SCSI ID of the target.
11380  * @lun_id: LUN ID of the scsi device.
11381  * @ctx_cmd: LPFC_CTX_LUN/LPFC_CTX_TGT/LPFC_CTX_HOST.
11382  *
11383  * This function returns number of FCP commands pending for the vport.
11384  * When ctx_cmd == LPFC_CTX_LUN, the function returns number of FCP
11385  * commands pending on the vport associated with SCSI device specified
11386  * by tgt_id and lun_id parameters.
11387  * When ctx_cmd == LPFC_CTX_TGT, the function returns number of FCP
11388  * commands pending on the vport associated with SCSI target specified
11389  * by tgt_id parameter.
11390  * When ctx_cmd == LPFC_CTX_HOST, the function returns number of FCP
11391  * commands pending on the vport.
11392  * This function returns the number of iocbs which satisfy the filter.
11393  * This function is called without any lock held.
11394  **/
11395 int
11396 lpfc_sli_sum_iocb(struct lpfc_vport *vport, uint16_t tgt_id, uint64_t lun_id,
11397                   lpfc_ctx_cmd ctx_cmd)
11398 {
11399         struct lpfc_hba *phba = vport->phba;
11400         struct lpfc_iocbq *iocbq;
11401         int sum, i;
11402 
11403         spin_lock_irq(&phba->hbalock);
11404         for (i = 1, sum = 0; i <= phba->sli.last_iotag; i++) {
11405                 iocbq = phba->sli.iocbq_lookup[i];
11406 
11407                 if (lpfc_sli_validate_fcp_iocb (iocbq, vport, tgt_id, lun_id,
11408                                                 ctx_cmd) == 0)
11409                         sum++;
11410         }
11411         spin_unlock_irq(&phba->hbalock);
11412 
11413         return sum;
11414 }
11415 
11416 /**
11417  * lpfc_sli_abort_fcp_cmpl - Completion handler function for aborted FCP IOCBs
11418  * @phba: Pointer to HBA context object
11419  * @cmdiocb: Pointer to command iocb object.
11420  * @rspiocb: Pointer to response iocb object.
11421  *
11422  * This function is called when an aborted FCP iocb completes. This
11423  * function is called by the ring event handler with no lock held.
11424  * This function frees the iocb.
11425  **/
11426 void
11427 lpfc_sli_abort_fcp_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
11428                         struct lpfc_iocbq *rspiocb)
11429 {
11430         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
11431                         "3096 ABORT_XRI_CN completing on rpi x%x "
11432                         "original iotag x%x, abort cmd iotag x%x "
11433                         "status 0x%x, reason 0x%x\n",
11434                         cmdiocb->iocb.un.acxri.abortContextTag,
11435                         cmdiocb->iocb.un.acxri.abortIoTag,
11436                         cmdiocb->iotag, rspiocb->iocb.ulpStatus,
11437                         rspiocb->iocb.un.ulpWord[4]);
11438         lpfc_sli_release_iocbq(phba, cmdiocb);
11439         return;
11440 }
11441 
11442 /**
11443  * lpfc_sli_abort_iocb - issue abort for all commands on a host/target/LUN
11444  * @vport: Pointer to virtual port.
11445  * @pring: Pointer to driver SLI ring object.
11446  * @tgt_id: SCSI ID of the target.
11447  * @lun_id: LUN ID of the scsi device.
11448  * @abort_cmd: LPFC_CTX_LUN/LPFC_CTX_TGT/LPFC_CTX_HOST.
11449  *
11450  * This function sends an abort command for every SCSI command
11451  * associated with the given virtual port pending on the ring
11452  * filtered by lpfc_sli_validate_fcp_iocb function.
11453  * When abort_cmd == LPFC_CTX_LUN, the function sends abort only to the
11454  * FCP iocbs associated with lun specified by tgt_id and lun_id
11455  * parameters
11456  * When abort_cmd == LPFC_CTX_TGT, the function sends abort only to the
11457  * FCP iocbs associated with SCSI target specified by tgt_id parameter.
11458  * When abort_cmd == LPFC_CTX_HOST, the function sends abort to all
11459  * FCP iocbs associated with virtual port.
11460  * This function returns number of iocbs it failed to abort.
11461  * This function is called with no locks held.
11462  **/
11463 int
11464 lpfc_sli_abort_iocb(struct lpfc_vport *vport, struct lpfc_sli_ring *pring,
11465                     uint16_t tgt_id, uint64_t lun_id, lpfc_ctx_cmd abort_cmd)
11466 {
11467         struct lpfc_hba *phba = vport->phba;
11468         struct lpfc_iocbq *iocbq;
11469         struct lpfc_iocbq *abtsiocb;
11470         struct lpfc_sli_ring *pring_s4;
11471         IOCB_t *cmd = NULL;
11472         int errcnt = 0, ret_val = 0;
11473         int i;
11474 
11475         /* all I/Os are in process of being flushed */
11476         if (phba->hba_flag & HBA_IOQ_FLUSH)
11477                 return errcnt;
11478 
11479         for (i = 1; i <= phba->sli.last_iotag; i++) {
11480                 iocbq = phba->sli.iocbq_lookup[i];
11481 
11482                 if (lpfc_sli_validate_fcp_iocb(iocbq, vport, tgt_id, lun_id,
11483                                                abort_cmd) != 0)
11484                         continue;
11485 
11486                 /*
11487                  * If the iocbq is already being aborted, don't take a second
11488                  * action, but do count it.
11489                  */
11490                 if (iocbq->iocb_flag & LPFC_DRIVER_ABORTED)
11491                         continue;
11492 
11493                 /* issue ABTS for this IOCB based on iotag */
11494                 abtsiocb = lpfc_sli_get_iocbq(phba);
11495                 if (abtsiocb == NULL) {
11496                         errcnt++;
11497                         continue;
11498                 }
11499 
11500                 /* indicate the IO is being aborted by the driver. */
11501                 iocbq->iocb_flag |= LPFC_DRIVER_ABORTED;
11502 
11503                 cmd = &iocbq->iocb;
11504                 abtsiocb->iocb.un.acxri.abortType = ABORT_TYPE_ABTS;
11505                 abtsiocb->iocb.un.acxri.abortContextTag = cmd->ulpContext;
11506                 if (phba->sli_rev == LPFC_SLI_REV4)
11507                         abtsiocb->iocb.un.acxri.abortIoTag = iocbq->sli4_xritag;
11508                 else
11509                         abtsiocb->iocb.un.acxri.abortIoTag = cmd->ulpIoTag;
11510                 abtsiocb->iocb.ulpLe = 1;
11511                 abtsiocb->iocb.ulpClass = cmd->ulpClass;
11512                 abtsiocb->vport = vport;
11513 
11514                 /* ABTS WQE must go to the same WQ as the WQE to be aborted */
11515                 abtsiocb->hba_wqidx = iocbq->hba_wqidx;
11516                 if (iocbq->iocb_flag & LPFC_IO_FCP)
11517                         abtsiocb->iocb_flag |= LPFC_USE_FCPWQIDX;
11518                 if (iocbq->iocb_flag & LPFC_IO_FOF)
11519                         abtsiocb->iocb_flag |= LPFC_IO_FOF;
11520 
11521                 if (lpfc_is_link_up(phba))
11522                         abtsiocb->iocb.ulpCommand = CMD_ABORT_XRI_CN;
11523                 else
11524                         abtsiocb->iocb.ulpCommand = CMD_CLOSE_XRI_CN;
11525 
11526                 /* Setup callback routine and issue the command. */
11527                 abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl;
11528                 if (phba->sli_rev == LPFC_SLI_REV4) {
11529                         pring_s4 = lpfc_sli4_calc_ring(phba, iocbq);
11530                         if (!pring_s4)
11531                                 continue;
11532                         ret_val = lpfc_sli_issue_iocb(phba, pring_s4->ringno,
11533                                                       abtsiocb, 0);
11534                 } else
11535                         ret_val = lpfc_sli_issue_iocb(phba, pring->ringno,
11536                                                       abtsiocb, 0);
11537                 if (ret_val == IOCB_ERROR) {
11538                         lpfc_sli_release_iocbq(phba, abtsiocb);
11539                         errcnt++;
11540                         continue;
11541                 }
11542         }
11543 
11544         return errcnt;
11545 }
11546 
11547 /**
11548  * lpfc_sli_abort_taskmgmt - issue abort for all commands on a host/target/LUN
11549  * @vport: Pointer to virtual port.
11550  * @pring: Pointer to driver SLI ring object.
11551  * @tgt_id: SCSI ID of the target.
11552  * @lun_id: LUN ID of the scsi device.
11553  * @taskmgmt_cmd: LPFC_CTX_LUN/LPFC_CTX_TGT/LPFC_CTX_HOST.
11554  *
11555  * This function sends an abort command for every SCSI command
11556  * associated with the given virtual port pending on the ring
11557  * filtered by lpfc_sli_validate_fcp_iocb function.
11558  * When taskmgmt_cmd == LPFC_CTX_LUN, the function sends abort only to the
11559  * FCP iocbs associated with lun specified by tgt_id and lun_id
11560  * parameters
11561  * When taskmgmt_cmd == LPFC_CTX_TGT, the function sends abort only to the
11562  * FCP iocbs associated with SCSI target specified by tgt_id parameter.
11563  * When taskmgmt_cmd == LPFC_CTX_HOST, the function sends abort to all
11564  * FCP iocbs associated with virtual port.
11565  * This function returns number of iocbs it aborted .
11566  * This function is called with no locks held right after a taskmgmt
11567  * command is sent.
11568  **/
11569 int
11570 lpfc_sli_abort_taskmgmt(struct lpfc_vport *vport, struct lpfc_sli_ring *pring,
11571                         uint16_t tgt_id, uint64_t lun_id, lpfc_ctx_cmd cmd)
11572 {
11573         struct lpfc_hba *phba = vport->phba;
11574         struct lpfc_io_buf *lpfc_cmd;
11575         struct lpfc_iocbq *abtsiocbq;
11576         struct lpfc_nodelist *ndlp;
11577         struct lpfc_iocbq *iocbq;
11578         IOCB_t *icmd;
11579         int sum, i, ret_val;
11580         unsigned long iflags;
11581         struct lpfc_sli_ring *pring_s4 = NULL;
11582 
11583         spin_lock_irqsave(&phba->hbalock, iflags);
11584 
11585         /* all I/Os are in process of being flushed */
11586         if (phba->hba_flag & HBA_IOQ_FLUSH) {
11587                 spin_unlock_irqrestore(&phba->hbalock, iflags);
11588                 return 0;
11589         }
11590         sum = 0;
11591 
11592         for (i = 1; i <= phba->sli.last_iotag; i++) {
11593                 iocbq = phba->sli.iocbq_lookup[i];
11594 
11595                 if (lpfc_sli_validate_fcp_iocb(iocbq, vport, tgt_id, lun_id,
11596                                                cmd) != 0)
11597                         continue;
11598 
11599                 /* Guard against IO completion being called at same time */
11600                 lpfc_cmd = container_of(iocbq, struct lpfc_io_buf, cur_iocbq);
11601                 spin_lock(&lpfc_cmd->buf_lock);
11602 
11603                 if (!lpfc_cmd->pCmd) {
11604                         spin_unlock(&lpfc_cmd->buf_lock);
11605                         continue;
11606                 }
11607 
11608                 if (phba->sli_rev == LPFC_SLI_REV4) {
11609                         pring_s4 =
11610                             phba->sli4_hba.hdwq[iocbq->hba_wqidx].io_wq->pring;
11611                         if (!pring_s4) {
11612                                 spin_unlock(&lpfc_cmd->buf_lock);
11613                                 continue;
11614                         }
11615                         /* Note: both hbalock and ring_lock must be set here */
11616                         spin_lock(&pring_s4->ring_lock);
11617                 }
11618 
11619                 /*
11620                  * If the iocbq is already being aborted, don't take a second
11621                  * action, but do count it.
11622                  */
11623                 if ((iocbq->iocb_flag & LPFC_DRIVER_ABORTED) ||
11624                     !(iocbq->iocb_flag & LPFC_IO_ON_TXCMPLQ)) {
11625                         if (phba->sli_rev == LPFC_SLI_REV4)
11626                                 spin_unlock(&pring_s4->ring_lock);
11627                         spin_unlock(&lpfc_cmd->buf_lock);
11628                         continue;
11629                 }
11630 
11631                 /* issue ABTS for this IOCB based on iotag */
11632                 abtsiocbq = __lpfc_sli_get_iocbq(phba);
11633                 if (!abtsiocbq) {
11634                         if (phba->sli_rev == LPFC_SLI_REV4)
11635                                 spin_unlock(&pring_s4->ring_lock);
11636                         spin_unlock(&lpfc_cmd->buf_lock);
11637                         continue;
11638                 }
11639 
11640                 icmd = &iocbq->iocb;
11641                 abtsiocbq->iocb.un.acxri.abortType = ABORT_TYPE_ABTS;
11642                 abtsiocbq->iocb.un.acxri.abortContextTag = icmd->ulpContext;
11643                 if (phba->sli_rev == LPFC_SLI_REV4)
11644                         abtsiocbq->iocb.un.acxri.abortIoTag =
11645                                                          iocbq->sli4_xritag;
11646                 else
11647                         abtsiocbq->iocb.un.acxri.abortIoTag = icmd->ulpIoTag;
11648                 abtsiocbq->iocb.ulpLe = 1;
11649                 abtsiocbq->iocb.ulpClass = icmd->ulpClass;
11650                 abtsiocbq->vport = vport;
11651 
11652                 /* ABTS WQE must go to the same WQ as the WQE to be aborted */
11653                 abtsiocbq->hba_wqidx = iocbq->hba_wqidx;
11654                 if (iocbq->iocb_flag & LPFC_IO_FCP)
11655                         abtsiocbq->iocb_flag |= LPFC_USE_FCPWQIDX;
11656                 if (iocbq->iocb_flag & LPFC_IO_FOF)
11657                         abtsiocbq->iocb_flag |= LPFC_IO_FOF;
11658 
11659                 ndlp = lpfc_cmd->rdata->pnode;
11660 
11661                 if (lpfc_is_link_up(phba) &&
11662                     (ndlp && ndlp->nlp_state == NLP_STE_MAPPED_NODE))
11663                         abtsiocbq->iocb.ulpCommand = CMD_ABORT_XRI_CN;
11664                 else
11665                         abtsiocbq->iocb.ulpCommand = CMD_CLOSE_XRI_CN;
11666 
11667                 /* Setup callback routine and issue the command. */
11668                 abtsiocbq->iocb_cmpl = lpfc_sli_abort_fcp_cmpl;
11669 
11670                 /*
11671                  * Indicate the IO is being aborted by the driver and set
11672                  * the caller's flag into the aborted IO.
11673                  */
11674                 iocbq->iocb_flag |= LPFC_DRIVER_ABORTED;
11675 
11676                 if (phba->sli_rev == LPFC_SLI_REV4) {
11677                         ret_val = __lpfc_sli_issue_iocb(phba, pring_s4->ringno,
11678                                                         abtsiocbq, 0);
11679                         spin_unlock(&pring_s4->ring_lock);
11680                 } else {
11681                         ret_val = __lpfc_sli_issue_iocb(phba, pring->ringno,
11682                                                         abtsiocbq, 0);
11683                 }
11684 
11685                 spin_unlock(&lpfc_cmd->buf_lock);
11686 
11687                 if (ret_val == IOCB_ERROR)
11688                         __lpfc_sli_release_iocbq(phba, abtsiocbq);
11689                 else
11690                         sum++;
11691         }
11692         spin_unlock_irqrestore(&phba->hbalock, iflags);
11693         return sum;
11694 }
11695 
11696 /**
11697  * lpfc_sli_wake_iocb_wait - lpfc_sli_issue_iocb_wait's completion handler
11698  * @phba: Pointer to HBA context object.
11699  * @cmdiocbq: Pointer to command iocb.
11700  * @rspiocbq: Pointer to response iocb.
11701  *
11702  * This function is the completion handler for iocbs issued using
11703  * lpfc_sli_issue_iocb_wait function. This function is called by the
11704  * ring event handler function without any lock held. This function
11705  * can be called from both worker thread context and interrupt
11706  * context. This function also can be called from other thread which
11707  * cleans up the SLI layer objects.
11708  * This function copy the contents of the response iocb to the
11709  * response iocb memory object provided by the caller of
11710  * lpfc_sli_issue_iocb_wait and then wakes up the thread which
11711  * sleeps for the iocb completion.
11712  **/
11713 static void
11714 lpfc_sli_wake_iocb_wait(struct lpfc_hba *phba,
11715                         struct lpfc_iocbq *cmdiocbq,
11716                         struct lpfc_iocbq *rspiocbq)
11717 {
11718         wait_queue_head_t *pdone_q;
11719         unsigned long iflags;
11720         struct lpfc_io_buf *lpfc_cmd;
11721 
11722         spin_lock_irqsave(&phba->hbalock, iflags);
11723         if (cmdiocbq->iocb_flag & LPFC_IO_WAKE_TMO) {
11724 
11725                 /*
11726                  * A time out has occurred for the iocb.  If a time out
11727                  * completion handler has been supplied, call it.  Otherwise,
11728                  * just free the iocbq.
11729                  */
11730 
11731                 spin_unlock_irqrestore(&phba->hbalock, iflags);
11732                 cmdiocbq->iocb_cmpl = cmdiocbq->wait_iocb_cmpl;
11733                 cmdiocbq->wait_iocb_cmpl = NULL;
11734                 if (cmdiocbq->iocb_cmpl)
11735                         (cmdiocbq->iocb_cmpl)(phba, cmdiocbq, NULL);
11736                 else
11737                         lpfc_sli_release_iocbq(phba, cmdiocbq);
11738                 return;
11739         }
11740 
11741         cmdiocbq->iocb_flag |= LPFC_IO_WAKE;
11742         if (cmdiocbq->context2 && rspiocbq)
11743                 memcpy(&((struct lpfc_iocbq *)cmdiocbq->context2)->iocb,
11744                        &rspiocbq->iocb, sizeof(IOCB_t));
11745 
11746         /* Set the exchange busy flag for task management commands */
11747         if ((cmdiocbq->iocb_flag & LPFC_IO_FCP) &&
11748                 !(cmdiocbq->iocb_flag & LPFC_IO_LIBDFC)) {
11749                 lpfc_cmd = container_of(cmdiocbq, struct lpfc_io_buf,
11750                         cur_iocbq);
11751                 if (rspiocbq && (rspiocbq->iocb_flag & LPFC_EXCHANGE_BUSY))
11752                         lpfc_cmd->flags |= LPFC_SBUF_XBUSY;
11753                 else
11754                         lpfc_cmd->flags &= ~LPFC_SBUF_XBUSY;
11755         }
11756 
11757         pdone_q = cmdiocbq->context_un.wait_queue;
11758         if (pdone_q)
11759                 wake_up(pdone_q);
11760         spin_unlock_irqrestore(&phba->hbalock, iflags);
11761         return;
11762 }
11763 
11764 /**
11765  * lpfc_chk_iocb_flg - Test IOCB flag with lock held.
11766  * @phba: Pointer to HBA context object..
11767  * @piocbq: Pointer to command iocb.
11768  * @flag: Flag to test.
11769  *
11770  * This routine grabs the hbalock and then test the iocb_flag to
11771  * see if the passed in flag is set.
11772  * Returns:
11773  * 1 if flag is set.
11774  * 0 if flag is not set.
11775  **/
11776 static int
11777 lpfc_chk_iocb_flg(struct lpfc_hba *phba,
11778                  struct lpfc_iocbq *piocbq, uint32_t flag)
11779 {
11780         unsigned long iflags;
11781         int ret;
11782 
11783         spin_lock_irqsave(&phba->hbalock, iflags);
11784         ret = piocbq->iocb_flag & flag;
11785         spin_unlock_irqrestore(&phba->hbalock, iflags);
11786         return ret;
11787 
11788 }
11789 
11790 /**
11791  * lpfc_sli_issue_iocb_wait - Synchronous function to issue iocb commands
11792  * @phba: Pointer to HBA context object..
11793  * @pring: Pointer to sli ring.
11794  * @piocb: Pointer to command iocb.
11795  * @prspiocbq: Pointer to response iocb.
11796  * @timeout: Timeout in number of seconds.
11797  *
11798  * This function issues the iocb to firmware and waits for the
11799  * iocb to complete. The iocb_cmpl field of the shall be used
11800  * to handle iocbs which time out. If the field is NULL, the
11801  * function shall free the iocbq structure.  If more clean up is
11802  * needed, the caller is expected to provide a completion function
11803  * that will provide the needed clean up.  If the iocb command is
11804  * not completed within timeout seconds, the function will either
11805  * free the iocbq structure (if iocb_cmpl == NULL) or execute the
11806  * completion function set in the iocb_cmpl field and then return
11807  * a status of IOCB_TIMEDOUT.  The caller should not free the iocb
11808  * resources if this function returns IOCB_TIMEDOUT.
11809  * The function waits for the iocb completion using an
11810  * non-interruptible wait.
11811  * This function will sleep while waiting for iocb completion.
11812  * So, this function should not be called from any context which
11813  * does not allow sleeping. Due to the same reason, this function
11814  * cannot be called with interrupt disabled.
11815  * This function assumes that the iocb completions occur while
11816  * this function sleep. So, this function cannot be called from
11817  * the thread which process iocb completion for this ring.
11818  * This function clears the iocb_flag of the iocb object before
11819  * issuing the iocb and the iocb completion handler sets this
11820  * flag and wakes this thread when the iocb completes.
11821  * The contents of the response iocb will be copied to prspiocbq
11822  * by the completion handler when the command completes.
11823  * This function returns IOCB_SUCCESS when success.
11824  * This function is called with no lock held.
11825  **/
11826 int
11827 lpfc_sli_issue_iocb_wait(struct lpfc_hba *phba,
11828                          uint32_t ring_number,
11829                          struct lpfc_iocbq *piocb,
11830                          struct lpfc_iocbq *prspiocbq,
11831                          uint32_t timeout)
11832 {
11833         DECLARE_WAIT_QUEUE_HEAD_ONSTACK(done_q);
11834         long timeleft, timeout_req = 0;
11835         int retval = IOCB_SUCCESS;
11836         uint32_t creg_val;
11837         struct lpfc_iocbq *iocb;
11838         int txq_cnt = 0;
11839         int txcmplq_cnt = 0;
11840         struct lpfc_sli_ring *pring;
11841         unsigned long iflags;
11842         bool iocb_completed = true;
11843 
11844         if (phba->sli_rev >= LPFC_SLI_REV4)
11845                 pring = lpfc_sli4_calc_ring(phba, piocb);
11846         else
11847                 pring = &phba->sli.sli3_ring[ring_number];
11848         /*
11849          * If the caller has provided a response iocbq buffer, then context2
11850          * is NULL or its an error.
11851          */
11852         if (prspiocbq) {
11853                 if (piocb->context2)
11854                         return IOCB_ERROR;
11855                 piocb->context2 = prspiocbq;
11856         }
11857 
11858         piocb->wait_iocb_cmpl = piocb->iocb_cmpl;
11859         piocb->iocb_cmpl = lpfc_sli_wake_iocb_wait;
11860         piocb->context_un.wait_queue = &done_q;
11861         piocb->iocb_flag &= ~(LPFC_IO_WAKE | LPFC_IO_WAKE_TMO);
11862 
11863         if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
11864                 if (lpfc_readl(phba->HCregaddr, &creg_val))
11865                         return IOCB_ERROR;
11866                 creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
11867                 writel(creg_val, phba->HCregaddr);
11868                 readl(phba->HCregaddr); /* flush */
11869         }
11870 
11871         retval = lpfc_sli_issue_iocb(phba, ring_number, piocb,
11872                                      SLI_IOCB_RET_IOCB);
11873         if (retval == IOCB_SUCCESS) {
11874                 timeout_req = msecs_to_jiffies(timeout * 1000);
11875                 timeleft = wait_event_timeout(done_q,
11876                                 lpfc_chk_iocb_flg(phba, piocb, LPFC_IO_WAKE),
11877                                 timeout_req);
11878                 spin_lock_irqsave(&phba->hbalock, iflags);
11879                 if (!(piocb->iocb_flag & LPFC_IO_WAKE)) {
11880 
11881                         /*
11882                          * IOCB timed out.  Inform the wake iocb wait
11883                          * completion function and set local status
11884                          */
11885 
11886                         iocb_completed = false;
11887                         piocb->iocb_flag |= LPFC_IO_WAKE_TMO;
11888                 }
11889                 spin_unlock_irqrestore(&phba->hbalock, iflags);
11890                 if (iocb_completed) {
11891                         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
11892                                         "0331 IOCB wake signaled\n");
11893                         /* Note: we are not indicating if the IOCB has a success
11894                          * status or not - that's for the caller to check.
11895                          * IOCB_SUCCESS means just that the command was sent and
11896                          * completed. Not that it completed successfully.
11897                          * */
11898                 } else if (timeleft == 0) {
11899                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
11900                                         "0338 IOCB wait timeout error - no "
11901                                         "wake response Data x%x\n", timeout);
11902                         retval = IOCB_TIMEDOUT;
11903                 } else {
11904                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
11905                                         "0330 IOCB wake NOT set, "
11906                                         "Data x%x x%lx\n",
11907                                         timeout, (timeleft / jiffies));
11908                         retval = IOCB_TIMEDOUT;
11909                 }
11910         } else if (retval == IOCB_BUSY) {
11911                 if (phba->cfg_log_verbose & LOG_SLI) {
11912                         list_for_each_entry(iocb, &pring->txq, list) {
11913                                 txq_cnt++;
11914                         }
11915                         list_for_each_entry(iocb, &pring->txcmplq, list) {
11916                                 txcmplq_cnt++;
11917                         }
11918                         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
11919                                 "2818 Max IOCBs %d txq cnt %d txcmplq cnt %d\n",
11920                                 phba->iocb_cnt, txq_cnt, txcmplq_cnt);
11921                 }
11922                 return retval;
11923         } else {
11924                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
11925                                 "0332 IOCB wait issue failed, Data x%x\n",
11926                                 retval);
11927                 retval = IOCB_ERROR;
11928         }
11929 
11930         if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
11931                 if (lpfc_readl(phba->HCregaddr, &creg_val))
11932                         return IOCB_ERROR;
11933                 creg_val &= ~(HC_R0INT_ENA << LPFC_FCP_RING);
11934                 writel(creg_val, phba->HCregaddr);
11935                 readl(phba->HCregaddr); /* flush */
11936         }
11937 
11938         if (prspiocbq)
11939                 piocb->context2 = NULL;
11940 
11941         piocb->context_un.wait_queue = NULL;
11942         piocb->iocb_cmpl = NULL;
11943         return retval;
11944 }
11945 
11946 /**
11947  * lpfc_sli_issue_mbox_wait - Synchronous function to issue mailbox
11948  * @phba: Pointer to HBA context object.
11949  * @pmboxq: Pointer to driver mailbox object.
11950  * @timeout: Timeout in number of seconds.
11951  *
11952  * This function issues the mailbox to firmware and waits for the
11953  * mailbox command to complete. If the mailbox command is not
11954  * completed within timeout seconds, it returns MBX_TIMEOUT.
11955  * The function waits for the mailbox completion using an
11956  * interruptible wait. If the thread is woken up due to a
11957  * signal, MBX_TIMEOUT error is returned to the caller. Caller
11958  * should not free the mailbox resources, if this function returns
11959  * MBX_TIMEOUT.
11960  * This function will sleep while waiting for mailbox completion.
11961  * So, this function should not be called from any context which
11962  * does not allow sleeping. Due to the same reason, this function
11963  * cannot be called with interrupt disabled.
11964  * This function assumes that the mailbox completion occurs while
11965  * this function sleep. So, this function cannot be called from
11966  * the worker thread which processes mailbox completion.
11967  * This function is called in the context of HBA management
11968  * applications.
11969  * This function returns MBX_SUCCESS when successful.
11970  * This function is called with no lock held.
11971  **/
11972 int
11973 lpfc_sli_issue_mbox_wait(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq,
11974                          uint32_t timeout)
11975 {
11976         struct completion mbox_done;
11977         int retval;
11978         unsigned long flag;
11979 
11980         pmboxq->mbox_flag &= ~LPFC_MBX_WAKE;
11981         /* setup wake call as IOCB callback */
11982         pmboxq->mbox_cmpl = lpfc_sli_wake_mbox_wait;
11983 
11984         /* setup context3 field to pass wait_queue pointer to wake function  */
11985         init_completion(&mbox_done);
11986         pmboxq->context3 = &mbox_done;
11987         /* now issue the command */
11988         retval = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
11989         if (retval == MBX_BUSY || retval == MBX_SUCCESS) {
11990                 wait_for_completion_timeout(&mbox_done,
11991                                             msecs_to_jiffies(timeout * 1000));
11992 
11993                 spin_lock_irqsave(&phba->hbalock, flag);
11994                 pmboxq->context3 = NULL;
11995                 /*
11996                  * if LPFC_MBX_WAKE flag is set the mailbox is completed
11997                  * else do not free the resources.
11998                  */
11999                 if (pmboxq->mbox_flag & LPFC_MBX_WAKE) {
12000                         retval = MBX_SUCCESS;
12001                 } else {
12002                         retval = MBX_TIMEOUT;
12003                         pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
12004                 }
12005                 spin_unlock_irqrestore(&phba->hbalock, flag);
12006         }
12007         return retval;
12008 }
12009 
12010 /**
12011  * lpfc_sli_mbox_sys_shutdown - shutdown mailbox command sub-system
12012  * @phba: Pointer to HBA context.
12013  *
12014  * This function is called to shutdown the driver's mailbox sub-system.
12015  * It first marks the mailbox sub-system is in a block state to prevent
12016  * the asynchronous mailbox command from issued off the pending mailbox
12017  * command queue. If the mailbox command sub-system shutdown is due to
12018  * HBA error conditions such as EEH or ERATT, this routine shall invoke
12019  * the mailbox sub-system flush routine to forcefully bring down the
12020  * mailbox sub-system. Otherwise, if it is due to normal condition (such
12021  * as with offline or HBA function reset), this routine will wait for the
12022  * outstanding mailbox command to complete before invoking the mailbox
12023  * sub-system flush routine to gracefully bring down mailbox sub-system.
12024  **/
12025 void
12026 lpfc_sli_mbox_sys_shutdown(struct lpfc_hba *phba, int mbx_action)
12027 {
12028         struct lpfc_sli *psli = &phba->sli;
12029         unsigned long timeout;
12030 
12031         if (mbx_action == LPFC_MBX_NO_WAIT) {
12032                 /* delay 100ms for port state */
12033                 msleep(100);
12034                 lpfc_sli_mbox_sys_flush(phba);
12035                 return;
12036         }
12037         timeout = msecs_to_jiffies(LPFC_MBOX_TMO * 1000) + jiffies;
12038 
12039         /* Disable softirqs, including timers from obtaining phba->hbalock */
12040         local_bh_disable();
12041 
12042         spin_lock_irq(&phba->hbalock);
12043         psli->sli_flag |= LPFC_SLI_ASYNC_MBX_BLK;
12044 
12045         if (psli->sli_flag & LPFC_SLI_ACTIVE) {
12046                 /* Determine how long we might wait for the active mailbox
12047                  * command to be gracefully completed by firmware.
12048                  */
12049                 if (phba->sli.mbox_active)
12050                         timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba,
12051                                                 phba->sli.mbox_active) *
12052                                                 1000) + jiffies;
12053                 spin_unlock_irq(&phba->hbalock);
12054 
12055                 /* Enable softirqs again, done with phba->hbalock */
12056                 local_bh_enable();
12057 
12058                 while (phba->sli.mbox_active) {
12059                         /* Check active mailbox complete status every 2ms */
12060                         msleep(2);
12061                         if (time_after(jiffies, timeout))
12062                                 /* Timeout, let the mailbox flush routine to
12063                                  * forcefully release active mailbox command
12064                                  */
12065                                 break;
12066                 }
12067         } else {
12068                 spin_unlock_irq(&phba->hbalock);
12069 
12070                 /* Enable softirqs again, done with phba->hbalock */
12071                 local_bh_enable();
12072         }
12073 
12074         lpfc_sli_mbox_sys_flush(phba);
12075 }
12076 
12077 /**
12078  * lpfc_sli_eratt_read - read sli-3 error attention events
12079  * @phba: Pointer to HBA context.
12080  *
12081  * This function is called to read the SLI3 device error attention registers
12082  * for possible error attention events. The caller must hold the hostlock
12083  * with spin_lock_irq().
12084  *
12085  * This function returns 1 when there is Error Attention in the Host Attention
12086  * Register and returns 0 otherwise.
12087  **/
12088 static int
12089 lpfc_sli_eratt_read(struct lpfc_hba *phba)
12090 {
12091         uint32_t ha_copy;
12092 
12093         /* Read chip Host Attention (HA) register */
12094         if (lpfc_readl(phba->HAregaddr, &ha_copy))
12095                 goto unplug_err;
12096 
12097         if (ha_copy & HA_ERATT) {
12098                 /* Read host status register to retrieve error event */
12099                 if (lpfc_sli_read_hs(phba))
12100                         goto unplug_err;
12101 
12102                 /* Check if there is a deferred error condition is active */
12103                 if ((HS_FFER1 & phba->work_hs) &&
12104                     ((HS_FFER2 | HS_FFER3 | HS_FFER4 | HS_FFER5 |
12105                       HS_FFER6 | HS_FFER7 | HS_FFER8) & phba->work_hs)) {
12106                         phba->hba_flag |= DEFER_ERATT;
12107                         /* Clear all interrupt enable conditions */
12108                         writel(0, phba->HCregaddr);
12109                         readl(phba->HCregaddr);
12110                 }
12111 
12112                 /* Set the driver HA work bitmap */
12113                 phba->work_ha |= HA_ERATT;
12114                 /* Indicate polling handles this ERATT */
12115                 phba->hba_flag |= HBA_ERATT_HANDLED;
12116                 return 1;
12117         }
12118         return 0;
12119 
12120 unplug_err:
12121         /* Set the driver HS work bitmap */
12122         phba->work_hs |= UNPLUG_ERR;
12123         /* Set the driver HA work bitmap */
12124         phba->work_ha |= HA_ERATT;
12125         /* Indicate polling handles this ERATT */
12126         phba->hba_flag |= HBA_ERATT_HANDLED;
12127         return 1;
12128 }
12129 
12130 /**
12131  * lpfc_sli4_eratt_read - read sli-4 error attention events
12132  * @phba: Pointer to HBA context.
12133  *
12134  * This function is called to read the SLI4 device error attention registers
12135  * for possible error attention events. The caller must hold the hostlock
12136  * with spin_lock_irq().
12137  *
12138  * This function returns 1 when there is Error Attention in the Host Attention
12139  * Register and returns 0 otherwise.
12140  **/
12141 static int
12142 lpfc_sli4_eratt_read(struct lpfc_hba *phba)
12143 {
12144         uint32_t uerr_sta_hi, uerr_sta_lo;
12145         uint32_t if_type, portsmphr;
12146         struct lpfc_register portstat_reg;
12147 
12148         /*
12149          * For now, use the SLI4 device internal unrecoverable error
12150          * registers for error attention. This can be changed later.
12151          */
12152         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
12153         switch (if_type) {
12154         case LPFC_SLI_INTF_IF_TYPE_0:
12155                 if (lpfc_readl(phba->sli4_hba.u.if_type0.UERRLOregaddr,
12156                         &uerr_sta_lo) ||
12157                         lpfc_readl(phba->sli4_hba.u.if_type0.UERRHIregaddr,
12158                         &uerr_sta_hi)) {
12159                         phba->work_hs |= UNPLUG_ERR;
12160                         phba->work_ha |= HA_ERATT;
12161                         phba->hba_flag |= HBA_ERATT_HANDLED;
12162                         return 1;
12163                 }
12164                 if ((~phba->sli4_hba.ue_mask_lo & uerr_sta_lo) ||
12165                     (~phba->sli4_hba.ue_mask_hi & uerr_sta_hi)) {
12166                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12167                                         "1423 HBA Unrecoverable error: "
12168                                         "uerr_lo_reg=0x%x, uerr_hi_reg=0x%x, "
12169                                         "ue_mask_lo_reg=0x%x, "
12170                                         "ue_mask_hi_reg=0x%x\n",
12171                                         uerr_sta_lo, uerr_sta_hi,
12172                                         phba->sli4_hba.ue_mask_lo,
12173                                         phba->sli4_hba.ue_mask_hi);
12174                         phba->work_status[0] = uerr_sta_lo;
12175                         phba->work_status[1] = uerr_sta_hi;
12176                         phba->work_ha |= HA_ERATT;
12177                         phba->hba_flag |= HBA_ERATT_HANDLED;
12178                         return 1;
12179                 }
12180                 break;
12181         case LPFC_SLI_INTF_IF_TYPE_2:
12182         case LPFC_SLI_INTF_IF_TYPE_6:
12183                 if (lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr,
12184                         &portstat_reg.word0) ||
12185                         lpfc_readl(phba->sli4_hba.PSMPHRregaddr,
12186                         &portsmphr)){
12187                         phba->work_hs |= UNPLUG_ERR;
12188                         phba->work_ha |= HA_ERATT;
12189                         phba->hba_flag |= HBA_ERATT_HANDLED;
12190                         return 1;
12191                 }
12192                 if (bf_get(lpfc_sliport_status_err, &portstat_reg)) {
12193                         phba->work_status[0] =
12194                                 readl(phba->sli4_hba.u.if_type2.ERR1regaddr);
12195                         phba->work_status[1] =
12196                                 readl(phba->sli4_hba.u.if_type2.ERR2regaddr);
12197                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12198                                         "2885 Port Status Event: "
12199                                         "port status reg 0x%x, "
12200                                         "port smphr reg 0x%x, "
12201                                         "error 1=0x%x, error 2=0x%x\n",
12202                                         portstat_reg.word0,
12203                                         portsmphr,
12204                                         phba->work_status[0],
12205                                         phba->work_status[1]);
12206                         phba->work_ha |= HA_ERATT;
12207                         phba->hba_flag |= HBA_ERATT_HANDLED;
12208                         return 1;
12209                 }
12210                 break;
12211         case LPFC_SLI_INTF_IF_TYPE_1:
12212         default:
12213                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12214                                 "2886 HBA Error Attention on unsupported "
12215                                 "if type %d.", if_type);
12216                 return 1;
12217         }
12218 
12219         return 0;
12220 }
12221 
12222 /**
12223  * lpfc_sli_check_eratt - check error attention events
12224  * @phba: Pointer to HBA context.
12225  *
12226  * This function is called from timer soft interrupt context to check HBA's
12227  * error attention register bit for error attention events.
12228  *
12229  * This function returns 1 when there is Error Attention in the Host Attention
12230  * Register and returns 0 otherwise.
12231  **/
12232 int
12233 lpfc_sli_check_eratt(struct lpfc_hba *phba)
12234 {
12235         uint32_t ha_copy;
12236 
12237         /* If somebody is waiting to handle an eratt, don't process it
12238          * here. The brdkill function will do this.
12239          */
12240         if (phba->link_flag & LS_IGNORE_ERATT)
12241                 return 0;
12242 
12243         /* Check if interrupt handler handles this ERATT */
12244         spin_lock_irq(&phba->hbalock);
12245         if (phba->hba_flag & HBA_ERATT_HANDLED) {
12246                 /* Interrupt handler has handled ERATT */
12247                 spin_unlock_irq(&phba->hbalock);
12248                 return 0;
12249         }
12250 
12251         /*
12252          * If there is deferred error attention, do not check for error
12253          * attention
12254          */
12255         if (unlikely(phba->hba_flag & DEFER_ERATT)) {
12256                 spin_unlock_irq(&phba->hbalock);
12257                 return 0;
12258         }
12259 
12260         /* If PCI channel is offline, don't process it */
12261         if (unlikely(pci_channel_offline(phba->pcidev))) {
12262                 spin_unlock_irq(&phba->hbalock);
12263                 return 0;
12264         }
12265 
12266         switch (phba->sli_rev) {
12267         case LPFC_SLI_REV2:
12268         case LPFC_SLI_REV3:
12269                 /* Read chip Host Attention (HA) register */
12270                 ha_copy = lpfc_sli_eratt_read(phba);
12271                 break;
12272         case LPFC_SLI_REV4:
12273                 /* Read device Uncoverable Error (UERR) registers */
12274                 ha_copy = lpfc_sli4_eratt_read(phba);
12275                 break;
12276         default:
12277                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12278                                 "0299 Invalid SLI revision (%d)\n",
12279                                 phba->sli_rev);
12280                 ha_copy = 0;
12281                 break;
12282         }
12283         spin_unlock_irq(&phba->hbalock);
12284 
12285         return ha_copy;
12286 }
12287 
12288 /**
12289  * lpfc_intr_state_check - Check device state for interrupt handling
12290  * @phba: Pointer to HBA context.
12291  *
12292  * This inline routine checks whether a device or its PCI slot is in a state
12293  * that the interrupt should be handled.
12294  *
12295  * This function returns 0 if the device or the PCI slot is in a state that
12296  * interrupt should be handled, otherwise -EIO.
12297  */
12298 static inline int
12299 lpfc_intr_state_check(struct lpfc_hba *phba)
12300 {
12301         /* If the pci channel is offline, ignore all the interrupts */
12302         if (unlikely(pci_channel_offline(phba->pcidev)))
12303                 return -EIO;
12304 
12305         /* Update device level interrupt statistics */
12306         phba->sli.slistat.sli_intr++;
12307 
12308         /* Ignore all interrupts during initialization. */
12309         if (unlikely(phba->link_state < LPFC_LINK_DOWN))
12310                 return -EIO;
12311 
12312         return 0;
12313 }
12314 
12315 /**
12316  * lpfc_sli_sp_intr_handler - Slow-path interrupt handler to SLI-3 device
12317  * @irq: Interrupt number.
12318  * @dev_id: The device context pointer.
12319  *
12320  * This function is directly called from the PCI layer as an interrupt
12321  * service routine when device with SLI-3 interface spec is enabled with
12322  * MSI-X multi-message interrupt mode and there are slow-path events in
12323  * the HBA. However, when the device is enabled with either MSI or Pin-IRQ
12324  * interrupt mode, this function is called as part of the device-level
12325  * interrupt handler. When the PCI slot is in error recovery or the HBA
12326  * is undergoing initialization, the interrupt handler will not process
12327  * the interrupt. The link attention and ELS ring attention events are
12328  * handled by the worker thread. The interrupt handler signals the worker
12329  * thread and returns for these events. This function is called without
12330  * any lock held. It gets the hbalock to access and update SLI data
12331  * structures.
12332  *
12333  * This function returns IRQ_HANDLED when interrupt is handled else it
12334  * returns IRQ_NONE.
12335  **/
12336 irqreturn_t
12337 lpfc_sli_sp_intr_handler(int irq, void *dev_id)
12338 {
12339         struct lpfc_hba  *phba;
12340         uint32_t ha_copy, hc_copy;
12341         uint32_t work_ha_copy;
12342         unsigned long status;
12343         unsigned long iflag;
12344         uint32_t control;
12345 
12346         MAILBOX_t *mbox, *pmbox;
12347         struct lpfc_vport *vport;
12348         struct lpfc_nodelist *ndlp;
12349         struct lpfc_dmabuf *mp;
12350         LPFC_MBOXQ_t *pmb;
12351         int rc;
12352 
12353         /*
12354          * Get the driver's phba structure from the dev_id and
12355          * assume the HBA is not interrupting.
12356          */
12357         phba = (struct lpfc_hba *)dev_id;
12358 
12359         if (unlikely(!phba))
12360                 return IRQ_NONE;
12361 
12362         /*
12363          * Stuff needs to be attented to when this function is invoked as an
12364          * individual interrupt handler in MSI-X multi-message interrupt mode
12365          */
12366         if (phba->intr_type == MSIX) {
12367                 /* Check device state for handling interrupt */
12368                 if (lpfc_intr_state_check(phba))
12369                         return IRQ_NONE;
12370                 /* Need to read HA REG for slow-path events */
12371                 spin_lock_irqsave(&phba->hbalock, iflag);
12372                 if (lpfc_readl(phba->HAregaddr, &ha_copy))
12373                         goto unplug_error;
12374                 /* If somebody is waiting to handle an eratt don't process it
12375                  * here. The brdkill function will do this.
12376                  */
12377                 if (phba->link_flag & LS_IGNORE_ERATT)
12378                         ha_copy &= ~HA_ERATT;
12379                 /* Check the need for handling ERATT in interrupt handler */
12380                 if (ha_copy & HA_ERATT) {
12381                         if (phba->hba_flag & HBA_ERATT_HANDLED)
12382                                 /* ERATT polling has handled ERATT */
12383                                 ha_copy &= ~HA_ERATT;
12384                         else
12385                                 /* Indicate interrupt handler handles ERATT */
12386                                 phba->hba_flag |= HBA_ERATT_HANDLED;
12387                 }
12388 
12389                 /*
12390                  * If there is deferred error attention, do not check for any
12391                  * interrupt.
12392                  */
12393                 if (unlikely(phba->hba_flag & DEFER_ERATT)) {
12394                         spin_unlock_irqrestore(&phba->hbalock, iflag);
12395                         return IRQ_NONE;
12396                 }
12397 
12398                 /* Clear up only attention source related to slow-path */
12399                 if (lpfc_readl(phba->HCregaddr, &hc_copy))
12400                         goto unplug_error;
12401 
12402                 writel(hc_copy & ~(HC_MBINT_ENA | HC_R2INT_ENA |
12403                         HC_LAINT_ENA | HC_ERINT_ENA),
12404                         phba->HCregaddr);
12405                 writel((ha_copy & (HA_MBATT | HA_R2_CLR_MSK)),
12406                         phba->HAregaddr);
12407                 writel(hc_copy, phba->HCregaddr);
12408                 readl(phba->HAregaddr); /* flush */
12409                 spin_unlock_irqrestore(&phba->hbalock, iflag);
12410         } else
12411                 ha_copy = phba->ha_copy;
12412 
12413         work_ha_copy = ha_copy & phba->work_ha_mask;
12414 
12415         if (work_ha_copy) {
12416                 if (work_ha_copy & HA_LATT) {
12417                         if (phba->sli.sli_flag & LPFC_PROCESS_LA) {
12418                                 /*
12419                                  * Turn off Link Attention interrupts
12420                                  * until CLEAR_LA done
12421                                  */
12422                                 spin_lock_irqsave(&phba->hbalock, iflag);
12423                                 phba->sli.sli_flag &= ~LPFC_PROCESS_LA;
12424                                 if (lpfc_readl(phba->HCregaddr, &control))
12425                                         goto unplug_error;
12426                                 control &= ~HC_LAINT_ENA;
12427                                 writel(control, phba->HCregaddr);
12428                                 readl(phba->HCregaddr); /* flush */
12429                                 spin_unlock_irqrestore(&phba->hbalock, iflag);
12430                         }
12431                         else
12432                                 work_ha_copy &= ~HA_LATT;
12433                 }
12434 
12435                 if (work_ha_copy & ~(HA_ERATT | HA_MBATT | HA_LATT)) {
12436                         /*
12437                          * Turn off Slow Rings interrupts, LPFC_ELS_RING is
12438                          * the only slow ring.
12439                          */
12440                         status = (work_ha_copy &
12441                                 (HA_RXMASK  << (4*LPFC_ELS_RING)));
12442                         status >>= (4*LPFC_ELS_RING);
12443                         if (status & HA_RXMASK) {
12444                                 spin_lock_irqsave(&phba->hbalock, iflag);
12445                                 if (lpfc_readl(phba->HCregaddr, &control))
12446                                         goto unplug_error;
12447 
12448                                 lpfc_debugfs_slow_ring_trc(phba,
12449                                 "ISR slow ring:   ctl:x%x stat:x%x isrcnt:x%x",
12450                                 control, status,
12451                                 (uint32_t)phba->sli.slistat.sli_intr);
12452 
12453                                 if (control & (HC_R0INT_ENA << LPFC_ELS_RING)) {
12454                                         lpfc_debugfs_slow_ring_trc(phba,
12455                                                 "ISR Disable ring:"
12456                                                 "pwork:x%x hawork:x%x wait:x%x",
12457                                                 phba->work_ha, work_ha_copy,
12458                                                 (uint32_t)((unsigned long)
12459                                                 &phba->work_waitq));
12460 
12461                                         control &=
12462                                             ~(HC_R0INT_ENA << LPFC_ELS_RING);
12463                                         writel(control, phba->HCregaddr);
12464                                         readl(phba->HCregaddr); /* flush */
12465                                 }
12466                                 else {
12467                                         lpfc_debugfs_slow_ring_trc(phba,
12468                                                 "ISR slow ring:   pwork:"
12469                                                 "x%x hawork:x%x wait:x%x",
12470                                                 phba->work_ha, work_ha_copy,
12471                                                 (uint32_t)((unsigned long)
12472                                                 &phba->work_waitq));
12473                                 }
12474                                 spin_unlock_irqrestore(&phba->hbalock, iflag);
12475                         }
12476                 }
12477                 spin_lock_irqsave(&phba->hbalock, iflag);
12478                 if (work_ha_copy & HA_ERATT) {
12479                         if (lpfc_sli_read_hs(phba))
12480                                 goto unplug_error;
12481                         /*
12482                          * Check if there is a deferred error condition
12483                          * is active
12484                          */
12485                         if ((HS_FFER1 & phba->work_hs) &&
12486                                 ((HS_FFER2 | HS_FFER3 | HS_FFER4 | HS_FFER5 |
12487                                   HS_FFER6 | HS_FFER7 | HS_FFER8) &
12488                                   phba->work_hs)) {
12489                                 phba->hba_flag |= DEFER_ERATT;
12490                                 /* Clear all interrupt enable conditions */
12491                                 writel(0, phba->HCregaddr);
12492                                 readl(phba->HCregaddr);
12493                         }
12494                 }
12495 
12496                 if ((work_ha_copy & HA_MBATT) && (phba->sli.mbox_active)) {
12497                         pmb = phba->sli.mbox_active;
12498                         pmbox = &pmb->u.mb;
12499                         mbox = phba->mbox;
12500                         vport = pmb->vport;
12501 
12502                         /* First check out the status word */
12503                         lpfc_sli_pcimem_bcopy(mbox, pmbox, sizeof(uint32_t));
12504                         if (pmbox->mbxOwner != OWN_HOST) {
12505                                 spin_unlock_irqrestore(&phba->hbalock, iflag);
12506                                 /*
12507                                  * Stray Mailbox Interrupt, mbxCommand <cmd>
12508                                  * mbxStatus <status>
12509                                  */
12510                                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX |
12511                                                 LOG_SLI,
12512                                                 "(%d):0304 Stray Mailbox "
12513                                                 "Interrupt mbxCommand x%x "
12514                                                 "mbxStatus x%x\n",
12515                                                 (vport ? vport->vpi : 0),
12516                                                 pmbox->mbxCommand,
12517                                                 pmbox->mbxStatus);
12518                                 /* clear mailbox attention bit */
12519                                 work_ha_copy &= ~HA_MBATT;
12520                         } else {
12521                                 phba->sli.mbox_active = NULL;
12522                                 spin_unlock_irqrestore(&phba->hbalock, iflag);
12523                                 phba->last_completion_time = jiffies;
12524                                 del_timer(&phba->sli.mbox_tmo);
12525                                 if (pmb->mbox_cmpl) {
12526                                         lpfc_sli_pcimem_bcopy(mbox, pmbox,
12527                                                         MAILBOX_CMD_SIZE);
12528                                         if (pmb->out_ext_byte_len &&
12529                                                 pmb->ctx_buf)
12530                                                 lpfc_sli_pcimem_bcopy(
12531                                                 phba->mbox_ext,
12532                                                 pmb->ctx_buf,
12533                                                 pmb->out_ext_byte_len);
12534                                 }
12535                                 if (pmb->mbox_flag & LPFC_MBX_IMED_UNREG) {
12536                                         pmb->mbox_flag &= ~LPFC_MBX_IMED_UNREG;
12537 
12538                                         lpfc_debugfs_disc_trc(vport,
12539                                                 LPFC_DISC_TRC_MBOX_VPORT,
12540                                                 "MBOX dflt rpi: : "
12541                                                 "status:x%x rpi:x%x",
12542                                                 (uint32_t)pmbox->mbxStatus,
12543                                                 pmbox->un.varWords[0], 0);
12544 
12545                                         if (!pmbox->mbxStatus) {
12546                                                 mp = (struct lpfc_dmabuf *)
12547                                                         (pmb->ctx_buf);
12548                                                 ndlp = (struct lpfc_nodelist *)
12549                                                         pmb->ctx_ndlp;
12550 
12551                                                 /* Reg_LOGIN of dflt RPI was
12552                                                  * successful. new lets get
12553                                                  * rid of the RPI using the
12554                                                  * same mbox buffer.
12555                                                  */
12556                                                 lpfc_unreg_login(phba,
12557                                                         vport->vpi,
12558                                                         pmbox->un.varWords[0],
12559                                                         pmb);
12560                                                 pmb->mbox_cmpl =
12561                                                         lpfc_mbx_cmpl_dflt_rpi;
12562                                                 pmb->ctx_buf = mp;
12563                                                 pmb->ctx_ndlp = ndlp;
12564                                                 pmb->vport = vport;
12565                                                 rc = lpfc_sli_issue_mbox(phba,
12566                                                                 pmb,
12567                                                                 MBX_NOWAIT);
12568                                                 if (rc != MBX_BUSY)
12569                                                         lpfc_printf_log(phba,
12570                                                         KERN_ERR,
12571                                                         LOG_MBOX | LOG_SLI,
12572                                                         "0350 rc should have"
12573                                                         "been MBX_BUSY\n");
12574                                                 if (rc != MBX_NOT_FINISHED)
12575                                                         goto send_current_mbox;
12576                                         }
12577                                 }
12578                                 spin_lock_irqsave(
12579                                                 &phba->pport->work_port_lock,
12580                                                 iflag);
12581                                 phba->pport->work_port_events &=
12582                                         ~WORKER_MBOX_TMO;
12583                                 spin_unlock_irqrestore(
12584                                                 &phba->pport->work_port_lock,
12585                                                 iflag);
12586                                 lpfc_mbox_cmpl_put(phba, pmb);
12587                         }
12588                 } else
12589                         spin_unlock_irqrestore(&phba->hbalock, iflag);
12590 
12591                 if ((work_ha_copy & HA_MBATT) &&
12592                     (phba->sli.mbox_active == NULL)) {
12593 send_current_mbox:
12594                         /* Process next mailbox command if there is one */
12595                         do {
12596                                 rc = lpfc_sli_issue_mbox(phba, NULL,
12597                                                          MBX_NOWAIT);
12598                         } while (rc == MBX_NOT_FINISHED);
12599                         if (rc != MBX_SUCCESS)
12600                                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX |
12601                                                 LOG_SLI, "0349 rc should be "
12602                                                 "MBX_SUCCESS\n");
12603                 }
12604 
12605                 spin_lock_irqsave(&phba->hbalock, iflag);
12606                 phba->work_ha |= work_ha_copy;
12607                 spin_unlock_irqrestore(&phba->hbalock, iflag);
12608                 lpfc_worker_wake_up(phba);
12609         }
12610         return IRQ_HANDLED;
12611 unplug_error:
12612         spin_unlock_irqrestore(&phba->hbalock, iflag);
12613         return IRQ_HANDLED;
12614 
12615 } /* lpfc_sli_sp_intr_handler */
12616 
12617 /**
12618  * lpfc_sli_fp_intr_handler - Fast-path interrupt handler to SLI-3 device.
12619  * @irq: Interrupt number.
12620  * @dev_id: The device context pointer.
12621  *
12622  * This function is directly called from the PCI layer as an interrupt
12623  * service routine when device with SLI-3 interface spec is enabled with
12624  * MSI-X multi-message interrupt mode and there is a fast-path FCP IOCB
12625  * ring event in the HBA. However, when the device is enabled with either
12626  * MSI or Pin-IRQ interrupt mode, this function is called as part of the
12627  * device-level interrupt handler. When the PCI slot is in error recovery
12628  * or the HBA is undergoing initialization, the interrupt handler will not
12629  * process the interrupt. The SCSI FCP fast-path ring event are handled in
12630  * the intrrupt context. This function is called without any lock held.
12631  * It gets the hbalock to access and update SLI data structures.
12632  *
12633  * This function returns IRQ_HANDLED when interrupt is handled else it
12634  * returns IRQ_NONE.
12635  **/
12636 irqreturn_t
12637 lpfc_sli_fp_intr_handler(int irq, void *dev_id)
12638 {
12639         struct lpfc_hba  *phba;
12640         uint32_t ha_copy;
12641         unsigned long status;
12642         unsigned long iflag;
12643         struct lpfc_sli_ring *pring;
12644 
12645         /* Get the driver's phba structure from the dev_id and
12646          * assume the HBA is not interrupting.
12647          */
12648         phba = (struct lpfc_hba *) dev_id;
12649 
12650         if (unlikely(!phba))
12651                 return IRQ_NONE;
12652 
12653         /*
12654          * Stuff needs to be attented to when this function is invoked as an
12655          * individual interrupt handler in MSI-X multi-message interrupt mode
12656          */
12657         if (phba->intr_type == MSIX) {
12658                 /* Check device state for handling interrupt */
12659                 if (lpfc_intr_state_check(phba))
12660                         return IRQ_NONE;
12661                 /* Need to read HA REG for FCP ring and other ring events */
12662                 if (lpfc_readl(phba->HAregaddr, &ha_copy))
12663                         return IRQ_HANDLED;
12664                 /* Clear up only attention source related to fast-path */
12665                 spin_lock_irqsave(&phba->hbalock, iflag);
12666                 /*
12667                  * If there is deferred error attention, do not check for
12668                  * any interrupt.
12669                  */
12670                 if (unlikely(phba->hba_flag & DEFER_ERATT)) {
12671                         spin_unlock_irqrestore(&phba->hbalock, iflag);
12672                         return IRQ_NONE;
12673                 }
12674                 writel((ha_copy & (HA_R0_CLR_MSK | HA_R1_CLR_MSK)),
12675                         phba->HAregaddr);
12676                 readl(phba->HAregaddr); /* flush */
12677                 spin_unlock_irqrestore(&phba->hbalock, iflag);
12678         } else
12679                 ha_copy = phba->ha_copy;
12680 
12681         /*
12682          * Process all events on FCP ring. Take the optimized path for FCP IO.
12683          */
12684         ha_copy &= ~(phba->work_ha_mask);
12685 
12686         status = (ha_copy & (HA_RXMASK << (4*LPFC_FCP_RING)));
12687         status >>= (4*LPFC_FCP_RING);
12688         pring = &phba->sli.sli3_ring[LPFC_FCP_RING];
12689         if (status & HA_RXMASK)
12690                 lpfc_sli_handle_fast_ring_event(phba, pring, status);
12691 
12692         if (phba->cfg_multi_ring_support == 2) {
12693                 /*
12694                  * Process all events on extra ring. Take the optimized path
12695                  * for extra ring IO.
12696                  */
12697                 status = (ha_copy & (HA_RXMASK << (4*LPFC_EXTRA_RING)));
12698                 status >>= (4*LPFC_EXTRA_RING);
12699                 if (status & HA_RXMASK) {
12700                         lpfc_sli_handle_fast_ring_event(phba,
12701                                         &phba->sli.sli3_ring[LPFC_EXTRA_RING],
12702                                         status);
12703                 }
12704         }
12705         return IRQ_HANDLED;
12706 }  /* lpfc_sli_fp_intr_handler */
12707 
12708 /**
12709  * lpfc_sli_intr_handler - Device-level interrupt handler to SLI-3 device
12710  * @irq: Interrupt number.
12711  * @dev_id: The device context pointer.
12712  *
12713  * This function is the HBA device-level interrupt handler to device with
12714  * SLI-3 interface spec, called from the PCI layer when either MSI or
12715  * Pin-IRQ interrupt mode is enabled and there is an event in the HBA which
12716  * requires driver attention. This function invokes the slow-path interrupt
12717  * attention handling function and fast-path interrupt attention handling
12718  * function in turn to process the relevant HBA attention events. This
12719  * function is called without any lock held. It gets the hbalock to access
12720  * and update SLI data structures.
12721  *
12722  * This function returns IRQ_HANDLED when interrupt is handled, else it
12723  * returns IRQ_NONE.
12724  **/
12725 irqreturn_t
12726 lpfc_sli_intr_handler(int irq, void *dev_id)
12727 {
12728         struct lpfc_hba  *phba;
12729         irqreturn_t sp_irq_rc, fp_irq_rc;
12730         unsigned long status1, status2;
12731         uint32_t hc_copy;
12732 
12733         /*
12734          * Get the driver's phba structure from the dev_id and
12735          * assume the HBA is not interrupting.
12736          */
12737         phba = (struct lpfc_hba *) dev_id;
12738 
12739         if (unlikely(!phba))
12740                 return IRQ_NONE;
12741 
12742         /* Check device state for handling interrupt */
12743         if (lpfc_intr_state_check(phba))
12744                 return IRQ_NONE;
12745 
12746         spin_lock(&phba->hbalock);
12747         if (lpfc_readl(phba->HAregaddr, &phba->ha_copy)) {
12748                 spin_unlock(&phba->hbalock);
12749                 return IRQ_HANDLED;
12750         }
12751 
12752         if (unlikely(!phba->ha_copy)) {
12753                 spin_unlock(&phba->hbalock);
12754                 return IRQ_NONE;
12755         } else if (phba->ha_copy & HA_ERATT) {
12756                 if (phba->hba_flag & HBA_ERATT_HANDLED)
12757                         /* ERATT polling has handled ERATT */
12758                         phba->ha_copy &= ~HA_ERATT;
12759                 else
12760                         /* Indicate interrupt handler handles ERATT */
12761                         phba->hba_flag |= HBA_ERATT_HANDLED;
12762         }
12763 
12764         /*
12765          * If there is deferred error attention, do not check for any interrupt.
12766          */
12767         if (unlikely(phba->hba_flag & DEFER_ERATT)) {
12768                 spin_unlock(&phba->hbalock);
12769                 return IRQ_NONE;
12770         }
12771 
12772         /* Clear attention sources except link and error attentions */
12773         if (lpfc_readl(phba->HCregaddr, &hc_copy)) {
12774                 spin_unlock(&phba->hbalock);
12775                 return IRQ_HANDLED;
12776         }
12777         writel(hc_copy & ~(HC_MBINT_ENA | HC_R0INT_ENA | HC_R1INT_ENA
12778                 | HC_R2INT_ENA | HC_LAINT_ENA | HC_ERINT_ENA),
12779                 phba->HCregaddr);
12780         writel((phba->ha_copy & ~(HA_LATT | HA_ERATT)), phba->HAregaddr);
12781         writel(hc_copy, phba->HCregaddr);
12782         readl(phba->HAregaddr); /* flush */
12783         spin_unlock(&phba->hbalock);
12784 
12785         /*
12786          * Invokes slow-path host attention interrupt handling as appropriate.
12787          */
12788 
12789         /* status of events with mailbox and link attention */
12790         status1 = phba->ha_copy & (HA_MBATT | HA_LATT | HA_ERATT);
12791 
12792         /* status of events with ELS ring */
12793         status2 = (phba->ha_copy & (HA_RXMASK  << (4*LPFC_ELS_RING)));
12794         status2 >>= (4*LPFC_ELS_RING);
12795 
12796         if (status1 || (status2 & HA_RXMASK))
12797                 sp_irq_rc = lpfc_sli_sp_intr_handler(irq, dev_id);
12798         else
12799                 sp_irq_rc = IRQ_NONE;
12800 
12801         /*
12802          * Invoke fast-path host attention interrupt handling as appropriate.
12803          */
12804 
12805         /* status of events with FCP ring */
12806         status1 = (phba->ha_copy & (HA_RXMASK << (4*LPFC_FCP_RING)));
12807         status1 >>= (4*LPFC_FCP_RING);
12808 
12809         /* status of events with extra ring */
12810         if (phba->cfg_multi_ring_support == 2) {
12811                 status2 = (phba->ha_copy & (HA_RXMASK << (4*LPFC_EXTRA_RING)));
12812                 status2 >>= (4*LPFC_EXTRA_RING);
12813         } else
12814                 status2 = 0;
12815 
12816         if ((status1 & HA_RXMASK) || (status2 & HA_RXMASK))
12817                 fp_irq_rc = lpfc_sli_fp_intr_handler(irq, dev_id);
12818         else
12819                 fp_irq_rc = IRQ_NONE;
12820 
12821         /* Return device-level interrupt handling status */
12822         return (sp_irq_rc == IRQ_HANDLED) ? sp_irq_rc : fp_irq_rc;
12823 }  /* lpfc_sli_intr_handler */
12824 
12825 /**
12826  * lpfc_sli4_els_xri_abort_event_proc - Process els xri abort event
12827  * @phba: pointer to lpfc hba data structure.
12828  *
12829  * This routine is invoked by the worker thread to process all the pending
12830  * SLI4 els abort xri events.
12831  **/
12832 void lpfc_sli4_els_xri_abort_event_proc(struct lpfc_hba *phba)
12833 {
12834         struct lpfc_cq_event *cq_event;
12835 
12836         /* First, declare the els xri abort event has been handled */
12837         spin_lock_irq(&phba->hbalock);
12838         phba->hba_flag &= ~ELS_XRI_ABORT_EVENT;
12839         spin_unlock_irq(&phba->hbalock);
12840         /* Now, handle all the els xri abort events */
12841         while (!list_empty(&phba->sli4_hba.sp_els_xri_aborted_work_queue)) {
12842                 /* Get the first event from the head of the event queue */
12843                 spin_lock_irq(&phba->hbalock);
12844                 list_remove_head(&phba->sli4_hba.sp_els_xri_aborted_work_queue,
12845                                  cq_event, struct lpfc_cq_event, list);
12846                 spin_unlock_irq(&phba->hbalock);
12847                 /* Notify aborted XRI for ELS work queue */
12848                 lpfc_sli4_els_xri_aborted(phba, &cq_event->cqe.wcqe_axri);
12849                 /* Free the event processed back to the free pool */
12850                 lpfc_sli4_cq_event_release(phba, cq_event);
12851         }
12852 }
12853 
12854 /**
12855  * lpfc_sli4_iocb_param_transfer - Transfer pIocbOut and cmpl status to pIocbIn
12856  * @phba: pointer to lpfc hba data structure
12857  * @pIocbIn: pointer to the rspiocbq
12858  * @pIocbOut: pointer to the cmdiocbq
12859  * @wcqe: pointer to the complete wcqe
12860  *
12861  * This routine transfers the fields of a command iocbq to a response iocbq
12862  * by copying all the IOCB fields from command iocbq and transferring the
12863  * completion status information from the complete wcqe.
12864  **/
12865 static void
12866 lpfc_sli4_iocb_param_transfer(struct lpfc_hba *phba,
12867                               struct lpfc_iocbq *pIocbIn,
12868                               struct lpfc_iocbq *pIocbOut,
12869                               struct lpfc_wcqe_complete *wcqe)
12870 {
12871         int numBdes, i;
12872         unsigned long iflags;
12873         uint32_t status, max_response;
12874         struct lpfc_dmabuf *dmabuf;
12875         struct ulp_bde64 *bpl, bde;
12876         size_t offset = offsetof(struct lpfc_iocbq, iocb);
12877 
12878         memcpy((char *)pIocbIn + offset, (char *)pIocbOut + offset,
12879                sizeof(struct lpfc_iocbq) - offset);
12880         /* Map WCQE parameters into irspiocb parameters */
12881         status = bf_get(lpfc_wcqe_c_status, wcqe);
12882         pIocbIn->iocb.ulpStatus = (status & LPFC_IOCB_STATUS_MASK);
12883         if (pIocbOut->iocb_flag & LPFC_IO_FCP)
12884                 if (pIocbIn->iocb.ulpStatus == IOSTAT_FCP_RSP_ERROR)
12885                         pIocbIn->iocb.un.fcpi.fcpi_parm =
12886                                         pIocbOut->iocb.un.fcpi.fcpi_parm -
12887                                         wcqe->total_data_placed;
12888                 else
12889                         pIocbIn->iocb.un.ulpWord[4] = wcqe->parameter;
12890         else {
12891                 pIocbIn->iocb.un.ulpWord[4] = wcqe->parameter;
12892                 switch (pIocbOut->iocb.ulpCommand) {
12893                 case CMD_ELS_REQUEST64_CR:
12894                         dmabuf = (struct lpfc_dmabuf *)pIocbOut->context3;
12895                         bpl  = (struct ulp_bde64 *)dmabuf->virt;
12896                         bde.tus.w = le32_to_cpu(bpl[1].tus.w);
12897                         max_response = bde.tus.f.bdeSize;
12898                         break;
12899                 case CMD_GEN_REQUEST64_CR:
12900                         max_response = 0;
12901                         if (!pIocbOut->context3)
12902                                 break;
12903                         numBdes = pIocbOut->iocb.un.genreq64.bdl.bdeSize/
12904                                         sizeof(struct ulp_bde64);
12905                         dmabuf = (struct lpfc_dmabuf *)pIocbOut->context3;
12906                         bpl = (struct ulp_bde64 *)dmabuf->virt;
12907                         for (i = 0; i < numBdes; i++) {
12908                                 bde.tus.w = le32_to_cpu(bpl[i].tus.w);
12909                                 if (bde.tus.f.bdeFlags != BUFF_TYPE_BDE_64)
12910                                         max_response += bde.tus.f.bdeSize;
12911                         }
12912                         break;
12913                 default:
12914                         max_response = wcqe->total_data_placed;
12915                         break;
12916                 }
12917                 if (max_response < wcqe->total_data_placed)
12918                         pIocbIn->iocb.un.genreq64.bdl.bdeSize = max_response;
12919                 else
12920                         pIocbIn->iocb.un.genreq64.bdl.bdeSize =
12921                                 wcqe->total_data_placed;
12922         }
12923 
12924         /* Convert BG errors for completion status */
12925         if (status == CQE_STATUS_DI_ERROR) {
12926                 pIocbIn->iocb.ulpStatus = IOSTAT_LOCAL_REJECT;
12927 
12928                 if (bf_get(lpfc_wcqe_c_bg_edir, wcqe))
12929                         pIocbIn->iocb.un.ulpWord[4] = IOERR_RX_DMA_FAILED;
12930                 else
12931                         pIocbIn->iocb.un.ulpWord[4] = IOERR_TX_DMA_FAILED;
12932 
12933                 pIocbIn->iocb.unsli3.sli3_bg.bgstat = 0;
12934                 if (bf_get(lpfc_wcqe_c_bg_ge, wcqe)) /* Guard Check failed */
12935                         pIocbIn->iocb.unsli3.sli3_bg.bgstat |=
12936                                 BGS_GUARD_ERR_MASK;
12937                 if (bf_get(lpfc_wcqe_c_bg_ae, wcqe)) /* App Tag Check failed */
12938                         pIocbIn->iocb.unsli3.sli3_bg.bgstat |=
12939                                 BGS_APPTAG_ERR_MASK;
12940                 if (bf_get(lpfc_wcqe_c_bg_re, wcqe)) /* Ref Tag Check failed */
12941                         pIocbIn->iocb.unsli3.sli3_bg.bgstat |=
12942                                 BGS_REFTAG_ERR_MASK;
12943 
12944                 /* Check to see if there was any good data before the error */
12945                 if (bf_get(lpfc_wcqe_c_bg_tdpv, wcqe)) {
12946                         pIocbIn->iocb.unsli3.sli3_bg.bgstat |=
12947                                 BGS_HI_WATER_MARK_PRESENT_MASK;
12948                         pIocbIn->iocb.unsli3.sli3_bg.bghm =
12949                                 wcqe->total_data_placed;
12950                 }
12951 
12952                 /*
12953                 * Set ALL the error bits to indicate we don't know what
12954                 * type of error it is.
12955                 */
12956                 if (!pIocbIn->iocb.unsli3.sli3_bg.bgstat)
12957                         pIocbIn->iocb.unsli3.sli3_bg.bgstat |=
12958                                 (BGS_REFTAG_ERR_MASK | BGS_APPTAG_ERR_MASK |
12959                                 BGS_GUARD_ERR_MASK);
12960         }
12961 
12962         /* Pick up HBA exchange busy condition */
12963         if (bf_get(lpfc_wcqe_c_xb, wcqe)) {
12964                 spin_lock_irqsave(&phba->hbalock, iflags);
12965                 pIocbIn->iocb_flag |= LPFC_EXCHANGE_BUSY;
12966                 spin_unlock_irqrestore(&phba->hbalock, iflags);
12967         }
12968 }
12969 
12970 /**
12971  * lpfc_sli4_els_wcqe_to_rspiocbq - Get response iocbq from els wcqe
12972  * @phba: Pointer to HBA context object.
12973  * @wcqe: Pointer to work-queue completion queue entry.
12974  *
12975  * This routine handles an ELS work-queue completion event and construct
12976  * a pseudo response ELS IODBQ from the SLI4 ELS WCQE for the common
12977  * discovery engine to handle.
12978  *
12979  * Return: Pointer to the receive IOCBQ, NULL otherwise.
12980  **/
12981 static struct lpfc_iocbq *
12982 lpfc_sli4_els_wcqe_to_rspiocbq(struct lpfc_hba *phba,
12983                                struct lpfc_iocbq *irspiocbq)
12984 {
12985         struct lpfc_sli_ring *pring;
12986         struct lpfc_iocbq *cmdiocbq;
12987         struct lpfc_wcqe_complete *wcqe;
12988         unsigned long iflags;
12989 
12990         pring = lpfc_phba_elsring(phba);
12991         if (unlikely(!pring))
12992                 return NULL;
12993 
12994         wcqe = &irspiocbq->cq_event.cqe.wcqe_cmpl;
12995         pring->stats.iocb_event++;
12996         /* Look up the ELS command IOCB and create pseudo response IOCB */
12997         cmdiocbq = lpfc_sli_iocbq_lookup_by_tag(phba, pring,
12998                                 bf_get(lpfc_wcqe_c_request_tag, wcqe));
12999         if (unlikely(!cmdiocbq)) {
13000                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
13001                                 "0386 ELS complete with no corresponding "
13002                                 "cmdiocb: 0x%x 0x%x 0x%x 0x%x\n",
13003                                 wcqe->word0, wcqe->total_data_placed,
13004                                 wcqe->parameter, wcqe->word3);
13005                 lpfc_sli_release_iocbq(phba, irspiocbq);
13006                 return NULL;
13007         }
13008 
13009         spin_lock_irqsave(&pring->ring_lock, iflags);
13010         /* Put the iocb back on the txcmplq */
13011         lpfc_sli_ringtxcmpl_put(phba, pring, cmdiocbq);
13012         spin_unlock_irqrestore(&pring->ring_lock, iflags);
13013 
13014         /* Fake the irspiocbq and copy necessary response information */
13015         lpfc_sli4_iocb_param_transfer(phba, irspiocbq, cmdiocbq, wcqe);
13016 
13017         return irspiocbq;
13018 }
13019 
13020 inline struct lpfc_cq_event *
13021 lpfc_cq_event_setup(struct lpfc_hba *phba, void *entry, int size)
13022 {
13023         struct lpfc_cq_event *cq_event;
13024 
13025         /* Allocate a new internal CQ_EVENT entry */
13026         cq_event = lpfc_sli4_cq_event_alloc(phba);
13027         if (!cq_event) {
13028                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
13029                                 "0602 Failed to alloc CQ_EVENT entry\n");
13030                 return NULL;
13031         }
13032 
13033         /* Move the CQE into the event */
13034         memcpy(&cq_event->cqe, entry, size);
13035         return cq_event;
13036 }
13037 
13038 /**
13039  * lpfc_sli4_sp_handle_async_event - Handle an asynchroous event
13040  * @phba: Pointer to HBA context object.
13041  * @cqe: Pointer to mailbox completion queue entry.
13042  *
13043  * This routine process a mailbox completion queue entry with asynchrous
13044  * event.
13045  *
13046  * Return: true if work posted to worker thread, otherwise false.
13047  **/
13048 static bool
13049 lpfc_sli4_sp_handle_async_event(struct lpfc_hba *phba, struct lpfc_mcqe *mcqe)
13050 {
13051         struct lpfc_cq_event *cq_event;
13052         unsigned long iflags;
13053 
13054         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
13055                         "0392 Async Event: word0:x%x, word1:x%x, "
13056                         "word2:x%x, word3:x%x\n", mcqe->word0,
13057                         mcqe->mcqe_tag0, mcqe->mcqe_tag1, mcqe->trailer);
13058 
13059         cq_event = lpfc_cq_event_setup(phba, mcqe, sizeof(struct lpfc_mcqe));
13060         if (!cq_event)
13061                 return false;
13062         spin_lock_irqsave(&phba->hbalock, iflags);
13063         list_add_tail(&cq_event->list, &phba->sli4_hba.sp_asynce_work_queue);
13064         /* Set the async event flag */
13065         phba->hba_flag |= ASYNC_EVENT;
13066         spin_unlock_irqrestore(&phba->hbalock, iflags);
13067 
13068         return true;
13069 }
13070 
13071 /**
13072  * lpfc_sli4_sp_handle_mbox_event - Handle a mailbox completion event
13073  * @phba: Pointer to HBA context object.
13074  * @cqe: Pointer to mailbox completion queue entry.
13075  *
13076  * This routine process a mailbox completion queue entry with mailbox
13077  * completion event.
13078  *
13079  * Return: true if work posted to worker thread, otherwise false.
13080  **/
13081 static bool
13082 lpfc_sli4_sp_handle_mbox_event(struct lpfc_hba *phba, struct lpfc_mcqe *mcqe)
13083 {
13084         uint32_t mcqe_status;
13085         MAILBOX_t *mbox, *pmbox;
13086         struct lpfc_mqe *mqe;
13087         struct lpfc_vport *vport;
13088         struct lpfc_nodelist *ndlp;
13089         struct lpfc_dmabuf *mp;
13090         unsigned long iflags;
13091         LPFC_MBOXQ_t *pmb;
13092         bool workposted = false;
13093         int rc;
13094 
13095         /* If not a mailbox complete MCQE, out by checking mailbox consume */
13096         if (!bf_get(lpfc_trailer_completed, mcqe))
13097                 goto out_no_mqe_complete;
13098 
13099         /* Get the reference to the active mbox command */
13100         spin_lock_irqsave(&phba->hbalock, iflags);
13101         pmb = phba->sli.mbox_active;
13102         if (unlikely(!pmb)) {
13103                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
13104                                 "1832 No pending MBOX command to handle\n");
13105                 spin_unlock_irqrestore(&phba->hbalock, iflags);
13106                 goto out_no_mqe_complete;
13107         }
13108         spin_unlock_irqrestore(&phba->hbalock, iflags);
13109         mqe = &pmb->u.mqe;
13110         pmbox = (MAILBOX_t *)&pmb->u.mqe;
13111         mbox = phba->mbox;
13112         vport = pmb->vport;
13113 
13114         /* Reset heartbeat timer */
13115         phba->last_completion_time = jiffies;
13116         del_timer(&phba->sli.mbox_tmo);
13117 
13118         /* Move mbox data to caller's mailbox region, do endian swapping */
13119         if (pmb->mbox_cmpl && mbox)
13120                 lpfc_sli4_pcimem_bcopy(mbox, mqe, sizeof(struct lpfc_mqe));
13121 
13122         /*
13123          * For mcqe errors, conditionally move a modified error code to
13124          * the mbox so that the error will not be missed.
13125          */
13126         mcqe_status = bf_get(lpfc_mcqe_status, mcqe);
13127         if (mcqe_status != MB_CQE_STATUS_SUCCESS) {
13128                 if (bf_get(lpfc_mqe_status, mqe) == MBX_SUCCESS)
13129                         bf_set(lpfc_mqe_status, mqe,
13130                                (LPFC_MBX_ERROR_RANGE | mcqe_status));
13131         }
13132         if (pmb->mbox_flag & LPFC_MBX_IMED_UNREG) {
13133                 pmb->mbox_flag &= ~LPFC_MBX_IMED_UNREG;
13134                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_MBOX_VPORT,
13135                                       "MBOX dflt rpi: status:x%x rpi:x%x",
13136                                       mcqe_status,
13137                                       pmbox->un.varWords[0], 0);
13138                 if (mcqe_status == MB_CQE_STATUS_SUCCESS) {
13139                         mp = (struct lpfc_dmabuf *)(pmb->ctx_buf);
13140                         ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
13141                         /* Reg_LOGIN of dflt RPI was successful. Now lets get
13142                          * RID of the PPI using the same mbox buffer.
13143                          */
13144                         lpfc_unreg_login(phba, vport->vpi,
13145                                          pmbox->un.varWords[0], pmb);
13146                         pmb->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
13147                         pmb->ctx_buf = mp;
13148                         pmb->ctx_ndlp = ndlp;
13149                         pmb->vport = vport;
13150                         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
13151                         if (rc != MBX_BUSY)
13152                                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX |
13153                                                 LOG_SLI, "0385 rc should "
13154                                                 "have been MBX_BUSY\n");
13155                         if (rc != MBX_NOT_FINISHED)
13156                                 goto send_current_mbox;
13157                 }
13158         }
13159         spin_lock_irqsave(&phba->pport->work_port_lock, iflags);
13160         phba->pport->work_port_events &= ~WORKER_MBOX_TMO;
13161         spin_unlock_irqrestore(&phba->pport->work_port_lock, iflags);
13162 
13163         /* There is mailbox completion work to do */
13164         spin_lock_irqsave(&phba->hbalock, iflags);
13165         __lpfc_mbox_cmpl_put(phba, pmb);
13166         phba->work_ha |= HA_MBATT;
13167         spin_unlock_irqrestore(&phba->hbalock, iflags);
13168         workposted = true;
13169 
13170 send_current_mbox:
13171         spin_lock_irqsave(&phba->hbalock, iflags);
13172         /* Release the mailbox command posting token */
13173         phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
13174         /* Setting active mailbox pointer need to be in sync to flag clear */
13175         phba->sli.mbox_active = NULL;
13176         if (bf_get(lpfc_trailer_consumed, mcqe))
13177                 lpfc_sli4_mq_release(phba->sli4_hba.mbx_wq);
13178         spin_unlock_irqrestore(&phba->hbalock, iflags);
13179         /* Wake up worker thread to post the next pending mailbox command */
13180         lpfc_worker_wake_up(phba);
13181         return workposted;
13182 
13183 out_no_mqe_complete:
13184         spin_lock_irqsave(&phba->hbalock, iflags);
13185         if (bf_get(lpfc_trailer_consumed, mcqe))
13186                 lpfc_sli4_mq_release(phba->sli4_hba.mbx_wq);
13187         spin_unlock_irqrestore(&phba->hbalock, iflags);
13188         return false;
13189 }
13190 
13191 /**
13192  * lpfc_sli4_sp_handle_mcqe - Process a mailbox completion queue entry
13193  * @phba: Pointer to HBA context object.
13194  * @cqe: Pointer to mailbox completion queue entry.
13195  *
13196  * This routine process a mailbox completion queue entry, it invokes the
13197  * proper mailbox complete handling or asynchrous event handling routine
13198  * according to the MCQE's async bit.
13199  *
13200  * Return: true if work posted to worker thread, otherwise false.
13201  **/
13202 static bool
13203 lpfc_sli4_sp_handle_mcqe(struct lpfc_hba *phba, struct lpfc_queue *cq,
13204                          struct lpfc_cqe *cqe)
13205 {
13206         struct lpfc_mcqe mcqe;
13207         bool workposted;
13208 
13209         cq->CQ_mbox++;
13210 
13211         /* Copy the mailbox MCQE and convert endian order as needed */
13212         lpfc_sli4_pcimem_bcopy(cqe, &mcqe, sizeof(struct lpfc_mcqe));
13213 
13214         /* Invoke the proper event handling routine */
13215         if (!bf_get(lpfc_trailer_async, &mcqe))
13216                 workposted = lpfc_sli4_sp_handle_mbox_event(phba, &mcqe);
13217         else
13218                 workposted = lpfc_sli4_sp_handle_async_event(phba, &mcqe);
13219         return workposted;
13220 }
13221 
13222 /**
13223  * lpfc_sli4_sp_handle_els_wcqe - Handle els work-queue completion event
13224  * @phba: Pointer to HBA context object.
13225  * @cq: Pointer to associated CQ
13226  * @wcqe: Pointer to work-queue completion queue entry.
13227  *
13228  * This routine handles an ELS work-queue completion event.
13229  *
13230  * Return: true if work posted to worker thread, otherwise false.
13231  **/
13232 static bool
13233 lpfc_sli4_sp_handle_els_wcqe(struct lpfc_hba *phba, struct lpfc_queue *cq,
13234                              struct lpfc_wcqe_complete *wcqe)
13235 {
13236         struct lpfc_iocbq *irspiocbq;
13237         unsigned long iflags;
13238         struct lpfc_sli_ring *pring = cq->pring;
13239         int txq_cnt = 0;
13240         int txcmplq_cnt = 0;
13241         int fcp_txcmplq_cnt = 0;
13242 
13243         /* Check for response status */
13244         if (unlikely(bf_get(lpfc_wcqe_c_status, wcqe))) {
13245                 /* Log the error status */
13246                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
13247                                 "0357 ELS CQE error: status=x%x: "
13248                                 "CQE: %08x %08x %08x %08x\n",
13249                                 bf_get(lpfc_wcqe_c_status, wcqe),
13250                                 wcqe->word0, wcqe->total_data_placed,
13251                                 wcqe->parameter, wcqe->word3);
13252         }
13253 
13254         /* Get an irspiocbq for later ELS response processing use */
13255         irspiocbq = lpfc_sli_get_iocbq(phba);
13256         if (!irspiocbq) {
13257                 if (!list_empty(&pring->txq))
13258                         txq_cnt++;
13259                 if (!list_empty(&pring->txcmplq))
13260                         txcmplq_cnt++;
13261                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
13262                         "0387 NO IOCBQ data: txq_cnt=%d iocb_cnt=%d "
13263                         "fcp_txcmplq_cnt=%d, els_txcmplq_cnt=%d\n",
13264                         txq_cnt, phba->iocb_cnt,
13265                         fcp_txcmplq_cnt,
13266                         txcmplq_cnt);
13267                 return false;
13268         }
13269 
13270         /* Save off the slow-path queue event for work thread to process */
13271         memcpy(&irspiocbq->cq_event.cqe.wcqe_cmpl, wcqe, sizeof(*wcqe));
13272         spin_lock_irqsave(&phba->hbalock, iflags);
13273         list_add_tail(&irspiocbq->cq_event.list,
13274                       &phba->sli4_hba.sp_queue_event);
13275         phba->hba_flag |= HBA_SP_QUEUE_EVT;
13276         spin_unlock_irqrestore(&phba->hbalock, iflags);
13277 
13278         return true;
13279 }
13280 
13281 /**
13282  * lpfc_sli4_sp_handle_rel_wcqe - Handle slow-path WQ entry consumed event
13283  * @phba: Pointer to HBA context object.
13284  * @wcqe: Pointer to work-queue completion queue entry.
13285  *
13286  * This routine handles slow-path WQ entry consumed event by invoking the
13287  * proper WQ release routine to the slow-path WQ.
13288  **/
13289 static void
13290 lpfc_sli4_sp_handle_rel_wcqe(struct lpfc_hba *phba,
13291                              struct lpfc_wcqe_release *wcqe)
13292 {
13293         /* sanity check on queue memory */
13294         if (unlikely(!phba->sli4_hba.els_wq))
13295                 return;
13296         /* Check for the slow-path ELS work queue */
13297         if (bf_get(lpfc_wcqe_r_wq_id, wcqe) == phba->sli4_hba.els_wq->queue_id)
13298                 lpfc_sli4_wq_release(phba->sli4_hba.els_wq,
13299                                      bf_get(lpfc_wcqe_r_wqe_index, wcqe));
13300         else
13301                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
13302                                 "2579 Slow-path wqe consume event carries "
13303                                 "miss-matched qid: wcqe-qid=x%x, sp-qid=x%x\n",
13304                                 bf_get(lpfc_wcqe_r_wqe_index, wcqe),
13305                                 phba->sli4_hba.els_wq->queue_id);
13306 }
13307 
13308 /**
13309  * lpfc_sli4_sp_handle_abort_xri_wcqe - Handle a xri abort event
13310  * @phba: Pointer to HBA context object.
13311  * @cq: Pointer to a WQ completion queue.
13312  * @wcqe: Pointer to work-queue completion queue entry.
13313  *
13314  * This routine handles an XRI abort event.
13315  *
13316  * Return: true if work posted to worker thread, otherwise false.
13317  **/
13318 static bool
13319 lpfc_sli4_sp_handle_abort_xri_wcqe(struct lpfc_hba *phba,
13320                                    struct lpfc_queue *cq,
13321                                    struct sli4_wcqe_xri_aborted *wcqe)
13322 {
13323         bool workposted = false;
13324         struct lpfc_cq_event *cq_event;
13325         unsigned long iflags;
13326 
13327         switch (cq->subtype) {
13328         case LPFC_IO:
13329                 lpfc_sli4_io_xri_aborted(phba, wcqe, cq->hdwq);
13330                 if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
13331                         /* Notify aborted XRI for NVME work queue */
13332                         if (phba->nvmet_support)
13333                                 lpfc_sli4_nvmet_xri_aborted(phba, wcqe);
13334                 }
13335                 workposted = false;
13336                 break;
13337         case LPFC_NVME_LS: /* NVME LS uses ELS resources */
13338         case LPFC_ELS:
13339                 cq_event = lpfc_cq_event_setup(
13340                         phba, wcqe, sizeof(struct sli4_wcqe_xri_aborted));
13341                 if (!cq_event)
13342                         return false;
13343                 cq_event->hdwq = cq->hdwq;
13344                 spin_lock_irqsave(&phba->hbalock, iflags);
13345                 list_add_tail(&cq_event->list,
13346                               &phba->sli4_hba.sp_els_xri_aborted_work_queue);
13347                 /* Set the els xri abort event flag */
13348                 phba->hba_flag |= ELS_XRI_ABORT_EVENT;
13349                 spin_unlock_irqrestore(&phba->hbalock, iflags);
13350                 workposted = true;
13351                 break;
13352         default:
13353                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
13354                                 "0603 Invalid CQ subtype %d: "
13355                                 "%08x %08x %08x %08x\n",
13356                                 cq->subtype, wcqe->word0, wcqe->parameter,
13357                                 wcqe->word2, wcqe->word3);
13358                 workposted = false;
13359                 break;
13360         }
13361         return workposted;
13362 }
13363 
13364 #define FC_RCTL_MDS_DIAGS       0xF4
13365 
13366 /**
13367  * lpfc_sli4_sp_handle_rcqe - Process a receive-queue completion queue entry
13368  * @phba: Pointer to HBA context object.
13369  * @rcqe: Pointer to receive-queue completion queue entry.
13370  *
13371  * This routine process a receive-queue completion queue entry.
13372  *
13373  * Return: true if work posted to worker thread, otherwise false.
13374  **/
13375 static bool
13376 lpfc_sli4_sp_handle_rcqe(struct lpfc_hba *phba, struct lpfc_rcqe *rcqe)
13377 {
13378         bool workposted = false;
13379         struct fc_frame_header *fc_hdr;
13380         struct lpfc_queue *hrq = phba->sli4_hba.hdr_rq;
13381         struct lpfc_queue *drq = phba->sli4_hba.dat_rq;
13382         struct lpfc_nvmet_tgtport *tgtp;
13383         struct hbq_dmabuf *dma_buf;
13384         uint32_t status, rq_id;
13385         unsigned long iflags;
13386 
13387         /* sanity check on queue memory */
13388         if (unlikely(!hrq) || unlikely(!drq))
13389                 return workposted;
13390 
13391         if (bf_get(lpfc_cqe_code, rcqe) == CQE_CODE_RECEIVE_V1)
13392                 rq_id = bf_get(lpfc_rcqe_rq_id_v1, rcqe);
13393         else
13394                 rq_id = bf_get(lpfc_rcqe_rq_id, rcqe);
13395         if (rq_id != hrq->queue_id)
13396                 goto out;
13397 
13398         status = bf_get(lpfc_rcqe_status, rcqe);
13399         switch (status) {
13400         case FC_STATUS_RQ_BUF_LEN_EXCEEDED:
13401                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
13402                                 "2537 Receive Frame Truncated!!\n");
13403                 /* fall through */
13404         case FC_STATUS_RQ_SUCCESS:
13405                 spin_lock_irqsave(&phba->hbalock, iflags);
13406                 lpfc_sli4_rq_release(hrq, drq);
13407                 dma_buf = lpfc_sli_hbqbuf_get(&phba->hbqs[0].hbq_buffer_list);
13408                 if (!dma_buf) {
13409                         hrq->RQ_no_buf_found++;
13410                         spin_unlock_irqrestore(&phba->hbalock, iflags);
13411                         goto out;
13412                 }
13413                 hrq->RQ_rcv_buf++;
13414                 hrq->RQ_buf_posted--;
13415                 memcpy(&dma_buf->cq_event.cqe.rcqe_cmpl, rcqe, sizeof(*rcqe));
13416 
13417                 fc_hdr = (struct fc_frame_header *)dma_buf->hbuf.virt;
13418 
13419                 if (fc_hdr->fh_r_ctl == FC_RCTL_MDS_DIAGS ||
13420                     fc_hdr->fh_r_ctl == FC_RCTL_DD_UNSOL_DATA) {
13421                         spin_unlock_irqrestore(&phba->hbalock, iflags);
13422                         /* Handle MDS Loopback frames */
13423                         lpfc_sli4_handle_mds_loopback(phba->pport, dma_buf);
13424                         break;
13425                 }
13426 
13427                 /* save off the frame for the work thread to process */
13428                 list_add_tail(&dma_buf->cq_event.list,
13429                               &phba->sli4_hba.sp_queue_event);
13430                 /* Frame received */
13431                 phba->hba_flag |= HBA_SP_QUEUE_EVT;
13432                 spin_unlock_irqrestore(&phba->hbalock, iflags);
13433                 workposted = true;
13434                 break;
13435         case FC_STATUS_INSUFF_BUF_FRM_DISC:
13436                 if (phba->nvmet_support) {
13437                         tgtp = phba->targetport->private;
13438                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI | LOG_NVME,
13439                                         "6402 RQE Error x%x, posted %d err_cnt "
13440                                         "%d: %x %x %x\n",
13441                                         status, hrq->RQ_buf_posted,
13442                                         hrq->RQ_no_posted_buf,
13443                                         atomic_read(&tgtp->rcv_fcp_cmd_in),
13444                                         atomic_read(&tgtp->rcv_fcp_cmd_out),
13445                                         atomic_read(&tgtp->xmt_fcp_release));
13446                 }
13447                 /* fallthrough */
13448 
13449         case FC_STATUS_INSUFF_BUF_NEED_BUF:
13450                 hrq->RQ_no_posted_buf++;
13451                 /* Post more buffers if possible */
13452                 spin_lock_irqsave(&phba->hbalock, iflags);
13453                 phba->hba_flag |= HBA_POST_RECEIVE_BUFFER;
13454                 spin_unlock_irqrestore(&phba->hbalock, iflags);
13455                 workposted = true;
13456                 break;
13457         }
13458 out:
13459         return workposted;
13460 }
13461 
13462 /**
13463  * lpfc_sli4_sp_handle_cqe - Process a slow path completion queue entry
13464  * @phba: Pointer to HBA context object.
13465  * @cq: Pointer to the completion queue.
13466  * @cqe: Pointer to a completion queue entry.
13467  *
13468  * This routine process a slow-path work-queue or receive queue completion queue
13469  * entry.
13470  *
13471  * Return: true if work posted to worker thread, otherwise false.
13472  **/
13473 static bool
13474 lpfc_sli4_sp_handle_cqe(struct lpfc_hba *phba, struct lpfc_queue *cq,
13475                          struct lpfc_cqe *cqe)
13476 {
13477         struct lpfc_cqe cqevt;
13478         bool workposted = false;
13479 
13480         /* Copy the work queue CQE and convert endian order if needed */
13481         lpfc_sli4_pcimem_bcopy(cqe, &cqevt, sizeof(struct lpfc_cqe));
13482 
13483         /* Check and process for different type of WCQE and dispatch */
13484         switch (bf_get(lpfc_cqe_code, &cqevt)) {
13485         case CQE_CODE_COMPL_WQE:
13486                 /* Process the WQ/RQ complete event */
13487                 phba->last_completion_time = jiffies;
13488                 workposted = lpfc_sli4_sp_handle_els_wcqe(phba, cq,
13489                                 (struct lpfc_wcqe_complete *)&cqevt);
13490                 break;
13491         case CQE_CODE_RELEASE_WQE:
13492                 /* Process the WQ release event */
13493                 lpfc_sli4_sp_handle_rel_wcqe(phba,
13494                                 (struct lpfc_wcqe_release *)&cqevt);
13495                 break;
13496         case CQE_CODE_XRI_ABORTED:
13497                 /* Process the WQ XRI abort event */
13498                 phba->last_completion_time = jiffies;
13499                 workposted = lpfc_sli4_sp_handle_abort_xri_wcqe(phba, cq,
13500                                 (struct sli4_wcqe_xri_aborted *)&cqevt);
13501                 break;
13502         case CQE_CODE_RECEIVE:
13503         case CQE_CODE_RECEIVE_V1:
13504                 /* Process the RQ event */
13505                 phba->last_completion_time = jiffies;
13506                 workposted = lpfc_sli4_sp_handle_rcqe(phba,
13507                                 (struct lpfc_rcqe *)&cqevt);
13508                 break;
13509         default:
13510                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
13511                                 "0388 Not a valid WCQE code: x%x\n",
13512                                 bf_get(lpfc_cqe_code, &cqevt));
13513                 break;
13514         }
13515         return workposted;
13516 }
13517 
13518 /**
13519  * lpfc_sli4_sp_handle_eqe - Process a slow-path event queue entry
13520  * @phba: Pointer to HBA context object.
13521  * @eqe: Pointer to fast-path event queue entry.
13522  *
13523  * This routine process a event queue entry from the slow-path event queue.
13524  * It will check the MajorCode and MinorCode to determine this is for a
13525  * completion event on a completion queue, if not, an error shall be logged
13526  * and just return. Otherwise, it will get to the corresponding completion
13527  * queue and process all the entries on that completion queue, rearm the
13528  * completion queue, and then return.
13529  *
13530  **/
13531 static void
13532 lpfc_sli4_sp_handle_eqe(struct lpfc_hba *phba, struct lpfc_eqe *eqe,
13533         struct lpfc_queue *speq)
13534 {
13535         struct lpfc_queue *cq = NULL, *childq;
13536         uint16_t cqid;
13537 
13538         /* Get the reference to the corresponding CQ */
13539         cqid = bf_get_le32(lpfc_eqe_resource_id, eqe);
13540 
13541         list_for_each_entry(childq, &speq->child_list, list) {
13542                 if (childq->queue_id == cqid) {
13543                         cq = childq;
13544                         break;
13545                 }
13546         }
13547         if (unlikely(!cq)) {
13548                 if (phba->sli.sli_flag & LPFC_SLI_ACTIVE)
13549                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
13550                                         "0365 Slow-path CQ identifier "
13551                                         "(%d) does not exist\n", cqid);
13552                 return;
13553         }
13554 
13555         /* Save EQ associated with this CQ */
13556         cq->assoc_qp = speq;
13557 
13558         if (!queue_work_on(cq->chann, phba->wq, &cq->spwork))
13559                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
13560                                 "0390 Cannot schedule soft IRQ "
13561                                 "for CQ eqcqid=%d, cqid=%d on CPU %d\n",
13562                                 cqid, cq->queue_id, raw_smp_processor_id());
13563 }
13564 
13565 /**
13566  * __lpfc_sli4_process_cq - Process elements of a CQ
13567  * @phba: Pointer to HBA context object.
13568  * @cq: Pointer to CQ to be processed
13569  * @handler: Routine to process each cqe
13570  * @delay: Pointer to usdelay to set in case of rescheduling of the handler
13571  *
13572  * This routine processes completion queue entries in a CQ. While a valid
13573  * queue element is found, the handler is called. During processing checks
13574  * are made for periodic doorbell writes to let the hardware know of
13575  * element consumption.
13576  *
13577  * If the max limit on cqes to process is hit, or there are no more valid
13578  * entries, the loop stops. If we processed a sufficient number of elements,
13579  * meaning there is sufficient load, rather than rearming and generating
13580  * another interrupt, a cq rescheduling delay will be set. A delay of 0
13581  * indicates no rescheduling.
13582  *
13583  * Returns True if work scheduled, False otherwise.
13584  **/
13585 static bool
13586 __lpfc_sli4_process_cq(struct lpfc_hba *phba, struct lpfc_queue *cq,
13587         bool (*handler)(struct lpfc_hba *, struct lpfc_queue *,
13588                         struct lpfc_cqe *), unsigned long *delay)
13589 {
13590         struct lpfc_cqe *cqe;
13591         bool workposted = false;
13592         int count = 0, consumed = 0;
13593         bool arm = true;
13594 
13595         /* default - no reschedule */
13596         *delay = 0;
13597 
13598         if (cmpxchg(&cq->queue_claimed, 0, 1) != 0)
13599                 goto rearm_and_exit;
13600 
13601         /* Process all the entries to the CQ */
13602         cq->q_flag = 0;
13603         cqe = lpfc_sli4_cq_get(cq);
13604         while (cqe) {
13605                 workposted |= handler(phba, cq, cqe);
13606                 __lpfc_sli4_consume_cqe(phba, cq, cqe);
13607 
13608                 consumed++;
13609                 if (!(++count % cq->max_proc_limit))
13610                         break;
13611 
13612                 if (!(count % cq->notify_interval)) {
13613                         phba->sli4_hba.sli4_write_cq_db(phba, cq, consumed,
13614                                                 LPFC_QUEUE_NOARM);
13615                         consumed = 0;
13616                 }
13617 
13618                 if (count == LPFC_NVMET_CQ_NOTIFY)
13619                         cq->q_flag |= HBA_NVMET_CQ_NOTIFY;
13620 
13621                 cqe = lpfc_sli4_cq_get(cq);
13622         }
13623         if (count >= phba->cfg_cq_poll_threshold) {
13624                 *delay = 1;
13625                 arm = false;
13626         }
13627 
13628         /* Track the max number of CQEs processed in 1 EQ */
13629         if (count > cq->CQ_max_cqe)
13630                 cq->CQ_max_cqe = count;
13631 
13632         cq->assoc_qp->EQ_cqe_cnt += count;
13633 
13634         /* Catch the no cq entry condition */
13635         if (unlikely(count == 0))
13636                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
13637                                 "0369 No entry from completion queue "
13638                                 "qid=%d\n", cq->queue_id);
13639 
13640         cq->queue_claimed = 0;
13641 
13642 rearm_and_exit:
13643         phba->sli4_hba.sli4_write_cq_db(phba, cq, consumed,
13644                         arm ?  LPFC_QUEUE_REARM : LPFC_QUEUE_NOARM);
13645 
13646         return workposted;
13647 }
13648 
13649 /**
13650  * lpfc_sli4_sp_process_cq - Process a slow-path event queue entry
13651  * @cq: pointer to CQ to process
13652  *
13653  * This routine calls the cq processing routine with a handler specific
13654  * to the type of queue bound to it.
13655  *
13656  * The CQ routine returns two values: the first is the calling status,
13657  * which indicates whether work was queued to the  background discovery
13658  * thread. If true, the routine should wakeup the discovery thread;
13659  * the second is the delay parameter. If non-zero, rather than rearming
13660  * the CQ and yet another interrupt, the CQ handler should be queued so
13661  * that it is processed in a subsequent polling action. The value of
13662  * the delay indicates when to reschedule it.
13663  **/
13664 static void
13665 __lpfc_sli4_sp_process_cq(struct lpfc_queue *cq)
13666 {
13667         struct lpfc_hba *phba = cq->phba;
13668         unsigned long delay;
13669         bool workposted = false;
13670 
13671         /* Process and rearm the CQ */
13672         switch (cq->type) {
13673         case LPFC_MCQ:
13674                 workposted |= __lpfc_sli4_process_cq(phba, cq,
13675                                                 lpfc_sli4_sp_handle_mcqe,
13676                                                 &delay);
13677                 break;
13678         case LPFC_WCQ:
13679                 if (cq->subtype == LPFC_IO)
13680                         workposted |= __lpfc_sli4_process_cq(phba, cq,
13681                                                 lpfc_sli4_fp_handle_cqe,
13682                                                 &delay);
13683                 else
13684                         workposted |= __lpfc_sli4_process_cq(phba, cq,
13685                                                 lpfc_sli4_sp_handle_cqe,
13686                                                 &delay);
13687                 break;
13688         default:
13689                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
13690                                 "0370 Invalid completion queue type (%d)\n",
13691                                 cq->type);
13692                 return;
13693         }
13694 
13695         if (delay) {
13696                 if (!queue_delayed_work_on(cq->chann, phba->wq,
13697                                            &cq->sched_spwork, delay))
13698                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
13699                                 "0394 Cannot schedule soft IRQ "
13700                                 "for cqid=%d on CPU %d\n",
13701                                 cq->queue_id, cq->chann);
13702         }
13703 
13704         /* wake up worker thread if there are works to be done */
13705         if (workposted)
13706                 lpfc_worker_wake_up(phba);
13707 }
13708 
13709 /**
13710  * lpfc_sli4_sp_process_cq - slow-path work handler when started by
13711  *   interrupt
13712  * @work: pointer to work element
13713  *
13714  * translates from the work handler and calls the slow-path handler.
13715  **/
13716 static void
13717 lpfc_sli4_sp_process_cq(struct work_struct *work)
13718 {
13719         struct lpfc_queue *cq = container_of(work, struct lpfc_queue, spwork);
13720 
13721         __lpfc_sli4_sp_process_cq(cq);
13722 }
13723 
13724 /**
13725  * lpfc_sli4_dly_sp_process_cq - slow-path work handler when started by timer
13726  * @work: pointer to work element
13727  *
13728  * translates from the work handler and calls the slow-path handler.
13729  **/
13730 static void
13731 lpfc_sli4_dly_sp_process_cq(struct work_struct *work)
13732 {
13733         struct lpfc_queue *cq = container_of(to_delayed_work(work),
13734                                         struct lpfc_queue, sched_spwork);
13735 
13736         __lpfc_sli4_sp_process_cq(cq);
13737 }
13738 
13739 /**
13740  * lpfc_sli4_fp_handle_fcp_wcqe - Process fast-path work queue completion entry
13741  * @phba: Pointer to HBA context object.
13742  * @cq: Pointer to associated CQ
13743  * @wcqe: Pointer to work-queue completion queue entry.
13744  *
13745  * This routine process a fast-path work queue completion entry from fast-path
13746  * event queue for FCP command response completion.
13747  **/
13748 static void
13749 lpfc_sli4_fp_handle_fcp_wcqe(struct lpfc_hba *phba, struct lpfc_queue *cq,
13750                              struct lpfc_wcqe_complete *wcqe)
13751 {
13752         struct lpfc_sli_ring *pring = cq->pring;
13753         struct lpfc_iocbq *cmdiocbq;
13754         struct lpfc_iocbq irspiocbq;
13755         unsigned long iflags;
13756 
13757         /* Check for response status */
13758         if (unlikely(bf_get(lpfc_wcqe_c_status, wcqe))) {
13759                 /* If resource errors reported from HBA, reduce queue
13760                  * depth of the SCSI device.
13761                  */
13762                 if (((bf_get(lpfc_wcqe_c_status, wcqe) ==
13763                      IOSTAT_LOCAL_REJECT)) &&
13764                     ((wcqe->parameter & IOERR_PARAM_MASK) ==
13765                      IOERR_NO_RESOURCES))
13766                         phba->lpfc_rampdown_queue_depth(phba);
13767 
13768                 /* Log the error status */
13769                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
13770                                 "0373 FCP CQE error: status=x%x: "
13771                                 "CQE: %08x %08x %08x %08x\n",
13772                                 bf_get(lpfc_wcqe_c_status, wcqe),
13773                                 wcqe->word0, wcqe->total_data_placed,
13774                                 wcqe->parameter, wcqe->word3);
13775         }
13776 
13777         /* Look up the FCP command IOCB and create pseudo response IOCB */
13778         spin_lock_irqsave(&pring->ring_lock, iflags);
13779         pring->stats.iocb_event++;
13780         spin_unlock_irqrestore(&pring->ring_lock, iflags);
13781         cmdiocbq = lpfc_sli_iocbq_lookup_by_tag(phba, pring,
13782                                 bf_get(lpfc_wcqe_c_request_tag, wcqe));
13783         if (unlikely(!cmdiocbq)) {
13784                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
13785                                 "0374 FCP complete with no corresponding "
13786                                 "cmdiocb: iotag (%d)\n",
13787                                 bf_get(lpfc_wcqe_c_request_tag, wcqe));
13788                 return;
13789         }
13790 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
13791         cmdiocbq->isr_timestamp = cq->isr_timestamp;
13792 #endif
13793         if (cmdiocbq->iocb_cmpl == NULL) {
13794                 if (cmdiocbq->wqe_cmpl) {
13795                         if (cmdiocbq->iocb_flag & LPFC_DRIVER_ABORTED) {
13796                                 spin_lock_irqsave(&phba->hbalock, iflags);
13797                                 cmdiocbq->iocb_flag &= ~LPFC_DRIVER_ABORTED;
13798                                 spin_unlock_irqrestore(&phba->hbalock, iflags);
13799                         }
13800 
13801                         /* Pass the cmd_iocb and the wcqe to the upper layer */
13802                         (cmdiocbq->wqe_cmpl)(phba, cmdiocbq, wcqe);
13803                         return;
13804                 }
13805                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
13806                                 "0375 FCP cmdiocb not callback function "
13807                                 "iotag: (%d)\n",
13808                                 bf_get(lpfc_wcqe_c_request_tag, wcqe));
13809                 return;
13810         }
13811 
13812         /* Fake the irspiocb and copy necessary response information */
13813         lpfc_sli4_iocb_param_transfer(phba, &irspiocbq, cmdiocbq, wcqe);
13814 
13815         if (cmdiocbq->iocb_flag & LPFC_DRIVER_ABORTED) {
13816                 spin_lock_irqsave(&phba->hbalock, iflags);
13817                 cmdiocbq->iocb_flag &= ~LPFC_DRIVER_ABORTED;
13818                 spin_unlock_irqrestore(&phba->hbalock, iflags);
13819         }
13820 
13821         /* Pass the cmd_iocb and the rsp state to the upper layer */
13822         (cmdiocbq->iocb_cmpl)(phba, cmdiocbq, &irspiocbq);
13823 }
13824 
13825 /**
13826  * lpfc_sli4_fp_handle_rel_wcqe - Handle fast-path WQ entry consumed event
13827  * @phba: Pointer to HBA context object.
13828  * @cq: Pointer to completion queue.
13829  * @wcqe: Pointer to work-queue completion queue entry.
13830  *
13831  * This routine handles an fast-path WQ entry consumed event by invoking the
13832  * proper WQ release routine to the slow-path WQ.
13833  **/
13834 static void
13835 lpfc_sli4_fp_handle_rel_wcqe(struct lpfc_hba *phba, struct lpfc_queue *cq,
13836                              struct lpfc_wcqe_release *wcqe)
13837 {
13838         struct lpfc_queue *childwq;
13839         bool wqid_matched = false;
13840         uint16_t hba_wqid;
13841 
13842         /* Check for fast-path FCP work queue release */
13843         hba_wqid = bf_get(lpfc_wcqe_r_wq_id, wcqe);
13844         list_for_each_entry(childwq, &cq->child_list, list) {
13845                 if (childwq->queue_id == hba_wqid) {
13846                         lpfc_sli4_wq_release(childwq,
13847                                         bf_get(lpfc_wcqe_r_wqe_index, wcqe));
13848                         if (childwq->q_flag & HBA_NVMET_WQFULL)
13849                                 lpfc_nvmet_wqfull_process(phba, childwq);
13850                         wqid_matched = true;
13851                         break;
13852                 }
13853         }
13854         /* Report warning log message if no match found */
13855         if (wqid_matched != true)
13856                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
13857                                 "2580 Fast-path wqe consume event carries "
13858                                 "miss-matched qid: wcqe-qid=x%x\n", hba_wqid);
13859 }
13860 
13861 /**
13862  * lpfc_sli4_nvmet_handle_rcqe - Process a receive-queue completion queue entry
13863  * @phba: Pointer to HBA context object.
13864  * @rcqe: Pointer to receive-queue completion queue entry.
13865  *
13866  * This routine process a receive-queue completion queue entry.
13867  *
13868  * Return: true if work posted to worker thread, otherwise false.
13869  **/
13870 static bool
13871 lpfc_sli4_nvmet_handle_rcqe(struct lpfc_hba *phba, struct lpfc_queue *cq,
13872                             struct lpfc_rcqe *rcqe)
13873 {
13874         bool workposted = false;
13875         struct lpfc_queue *hrq;
13876         struct lpfc_queue *drq;
13877         struct rqb_dmabuf *dma_buf;
13878         struct fc_frame_header *fc_hdr;
13879         struct lpfc_nvmet_tgtport *tgtp;
13880         uint32_t status, rq_id;
13881         unsigned long iflags;
13882         uint32_t fctl, idx;
13883 
13884         if ((phba->nvmet_support == 0) ||
13885             (phba->sli4_hba.nvmet_cqset == NULL))
13886                 return workposted;
13887 
13888         idx = cq->queue_id - phba->sli4_hba.nvmet_cqset[0]->queue_id;
13889         hrq = phba->sli4_hba.nvmet_mrq_hdr[idx];
13890         drq = phba->sli4_hba.nvmet_mrq_data[idx];
13891 
13892         /* sanity check on queue memory */
13893         if (unlikely(!hrq) || unlikely(!drq))
13894                 return workposted;
13895 
13896         if (bf_get(lpfc_cqe_code, rcqe) == CQE_CODE_RECEIVE_V1)
13897                 rq_id = bf_get(lpfc_rcqe_rq_id_v1, rcqe);
13898         else
13899                 rq_id = bf_get(lpfc_rcqe_rq_id, rcqe);
13900 
13901         if ((phba->nvmet_support == 0) ||
13902             (rq_id != hrq->queue_id))
13903                 return workposted;
13904 
13905         status = bf_get(lpfc_rcqe_status, rcqe);
13906         switch (status) {
13907         case FC_STATUS_RQ_BUF_LEN_EXCEEDED:
13908                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
13909                                 "6126 Receive Frame Truncated!!\n");
13910                 /* fall through */
13911         case FC_STATUS_RQ_SUCCESS:
13912                 spin_lock_irqsave(&phba->hbalock, iflags);
13913                 lpfc_sli4_rq_release(hrq, drq);
13914                 dma_buf = lpfc_sli_rqbuf_get(phba, hrq);
13915                 if (!dma_buf) {
13916                         hrq->RQ_no_buf_found++;
13917                         spin_unlock_irqrestore(&phba->hbalock, iflags);
13918                         goto out;
13919                 }
13920                 spin_unlock_irqrestore(&phba->hbalock, iflags);
13921                 hrq->RQ_rcv_buf++;
13922                 hrq->RQ_buf_posted--;
13923                 fc_hdr = (struct fc_frame_header *)dma_buf->hbuf.virt;
13924 
13925                 /* Just some basic sanity checks on FCP Command frame */
13926                 fctl = (fc_hdr->fh_f_ctl[0] << 16 |
13927                 fc_hdr->fh_f_ctl[1] << 8 |
13928                 fc_hdr->fh_f_ctl[2]);
13929                 if (((fctl &
13930                     (FC_FC_FIRST_SEQ | FC_FC_END_SEQ | FC_FC_SEQ_INIT)) !=
13931                     (FC_FC_FIRST_SEQ | FC_FC_END_SEQ | FC_FC_SEQ_INIT)) ||
13932                     (fc_hdr->fh_seq_cnt != 0)) /* 0 byte swapped is still 0 */
13933                         goto drop;
13934 
13935                 if (fc_hdr->fh_type == FC_TYPE_FCP) {
13936                         dma_buf->bytes_recv = bf_get(lpfc_rcqe_length, rcqe);
13937                         lpfc_nvmet_unsol_fcp_event(
13938                                 phba, idx, dma_buf, cq->isr_timestamp,
13939                                 cq->q_flag & HBA_NVMET_CQ_NOTIFY);
13940                         return false;
13941                 }
13942 drop:
13943                 lpfc_rq_buf_free(phba, &dma_buf->hbuf);
13944                 break;
13945         case FC_STATUS_INSUFF_BUF_FRM_DISC:
13946                 if (phba->nvmet_support) {
13947                         tgtp = phba->targetport->private;
13948                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI | LOG_NVME,
13949                                         "6401 RQE Error x%x, posted %d err_cnt "
13950                                         "%d: %x %x %x\n",
13951                                         status, hrq->RQ_buf_posted,
13952                                         hrq->RQ_no_posted_buf,
13953                                         atomic_read(&tgtp->rcv_fcp_cmd_in),
13954                                         atomic_read(&tgtp->rcv_fcp_cmd_out),
13955                                         atomic_read(&tgtp->xmt_fcp_release));
13956                 }
13957                 /* fallthrough */
13958 
13959         case FC_STATUS_INSUFF_BUF_NEED_BUF:
13960                 hrq->RQ_no_posted_buf++;
13961                 /* Post more buffers if possible */
13962                 break;
13963         }
13964 out:
13965         return workposted;
13966 }
13967 
13968 /**
13969  * lpfc_sli4_fp_handle_cqe - Process fast-path work queue completion entry
13970  * @phba: adapter with cq
13971  * @cq: Pointer to the completion queue.
13972  * @eqe: Pointer to fast-path completion queue entry.
13973  *
13974  * This routine process a fast-path work queue completion entry from fast-path
13975  * event queue for FCP command response completion.
13976  *
13977  * Return: true if work posted to worker thread, otherwise false.
13978  **/
13979 static bool
13980 lpfc_sli4_fp_handle_cqe(struct lpfc_hba *phba, struct lpfc_queue *cq,
13981                          struct lpfc_cqe *cqe)
13982 {
13983         struct lpfc_wcqe_release wcqe;
13984         bool workposted = false;
13985 
13986         /* Copy the work queue CQE and convert endian order if needed */
13987         lpfc_sli4_pcimem_bcopy(cqe, &wcqe, sizeof(struct lpfc_cqe));
13988 
13989         /* Check and process for different type of WCQE and dispatch */
13990         switch (bf_get(lpfc_wcqe_c_code, &wcqe)) {
13991         case CQE_CODE_COMPL_WQE:
13992         case CQE_CODE_NVME_ERSP:
13993                 cq->CQ_wq++;
13994                 /* Process the WQ complete event */
13995                 phba->last_completion_time = jiffies;
13996                 if (cq->subtype == LPFC_IO || cq->subtype == LPFC_NVME_LS)
13997                         lpfc_sli4_fp_handle_fcp_wcqe(phba, cq,
13998                                 (struct lpfc_wcqe_complete *)&wcqe);
13999                 break;
14000         case CQE_CODE_RELEASE_WQE:
14001                 cq->CQ_release_wqe++;
14002                 /* Process the WQ release event */
14003                 lpfc_sli4_fp_handle_rel_wcqe(phba, cq,
14004                                 (struct lpfc_wcqe_release *)&wcqe);
14005                 break;
14006         case CQE_CODE_XRI_ABORTED:
14007                 cq->CQ_xri_aborted++;
14008                 /* Process the WQ XRI abort event */
14009                 phba->last_completion_time = jiffies;
14010                 workposted = lpfc_sli4_sp_handle_abort_xri_wcqe(phba, cq,
14011                                 (struct sli4_wcqe_xri_aborted *)&wcqe);
14012                 break;
14013         case CQE_CODE_RECEIVE_V1:
14014         case CQE_CODE_RECEIVE:
14015                 phba->last_completion_time = jiffies;
14016                 if (cq->subtype == LPFC_NVMET) {
14017                         workposted = lpfc_sli4_nvmet_handle_rcqe(
14018                                 phba, cq, (struct lpfc_rcqe *)&wcqe);
14019                 }
14020                 break;
14021         default:
14022                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
14023                                 "0144 Not a valid CQE code: x%x\n",
14024                                 bf_get(lpfc_wcqe_c_code, &wcqe));
14025                 break;
14026         }
14027         return workposted;
14028 }
14029 
14030 /**
14031  * lpfc_sli4_hba_handle_eqe - Process a fast-path event queue entry
14032  * @phba: Pointer to HBA context object.
14033  * @eqe: Pointer to fast-path event queue entry.
14034  *
14035  * This routine process a event queue entry from the fast-path event queue.
14036  * It will check the MajorCode and MinorCode to determine this is for a
14037  * completion event on a completion queue, if not, an error shall be logged
14038  * and just return. Otherwise, it will get to the corresponding completion
14039  * queue and process all the entries on the completion queue, rearm the
14040  * completion queue, and then return.
14041  **/
14042 static void
14043 lpfc_sli4_hba_handle_eqe(struct lpfc_hba *phba, struct lpfc_queue *eq,
14044                          struct lpfc_eqe *eqe)
14045 {
14046         struct lpfc_queue *cq = NULL;
14047         uint32_t qidx = eq->hdwq;
14048         uint16_t cqid, id;
14049 
14050         if (unlikely(bf_get_le32(lpfc_eqe_major_code, eqe) != 0)) {
14051                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
14052                                 "0366 Not a valid completion "
14053                                 "event: majorcode=x%x, minorcode=x%x\n",
14054                                 bf_get_le32(lpfc_eqe_major_code, eqe),
14055                                 bf_get_le32(lpfc_eqe_minor_code, eqe));
14056                 return;
14057         }
14058 
14059         /* Get the reference to the corresponding CQ */
14060         cqid = bf_get_le32(lpfc_eqe_resource_id, eqe);
14061 
14062         /* Use the fast lookup method first */
14063         if (cqid <= phba->sli4_hba.cq_max) {
14064                 cq = phba->sli4_hba.cq_lookup[cqid];
14065                 if (cq)
14066                         goto  work_cq;
14067         }
14068 
14069         /* Next check for NVMET completion */
14070         if (phba->cfg_nvmet_mrq && phba->sli4_hba.nvmet_cqset) {
14071                 id = phba->sli4_hba.nvmet_cqset[0]->queue_id;
14072                 if ((cqid >= id) && (cqid < (id + phba->cfg_nvmet_mrq))) {
14073                         /* Process NVMET unsol rcv */
14074                         cq = phba->sli4_hba.nvmet_cqset[cqid - id];
14075                         goto  process_cq;
14076                 }
14077         }
14078 
14079         if (phba->sli4_hba.nvmels_cq &&
14080             (cqid == phba->sli4_hba.nvmels_cq->queue_id)) {
14081                 /* Process NVME unsol rcv */
14082                 cq = phba->sli4_hba.nvmels_cq;
14083         }
14084 
14085         /* Otherwise this is a Slow path event */
14086         if (cq == NULL) {
14087                 lpfc_sli4_sp_handle_eqe(phba, eqe,
14088                                         phba->sli4_hba.hdwq[qidx].hba_eq);
14089                 return;
14090         }
14091 
14092 process_cq:
14093         if (unlikely(cqid != cq->queue_id)) {
14094                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
14095                                 "0368 Miss-matched fast-path completion "
14096                                 "queue identifier: eqcqid=%d, fcpcqid=%d\n",
14097                                 cqid, cq->queue_id);
14098                 return;
14099         }
14100 
14101 work_cq:
14102 #if defined(CONFIG_SCSI_LPFC_DEBUG_FS)
14103         if (phba->ktime_on)
14104                 cq->isr_timestamp = ktime_get_ns();
14105         else
14106                 cq->isr_timestamp = 0;
14107 #endif
14108         if (!queue_work_on(cq->chann, phba->wq, &cq->irqwork))
14109                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
14110                                 "0363 Cannot schedule soft IRQ "
14111                                 "for CQ eqcqid=%d, cqid=%d on CPU %d\n",
14112                                 cqid, cq->queue_id, raw_smp_processor_id());
14113 }
14114 
14115 /**
14116  * __lpfc_sli4_hba_process_cq - Process a fast-path event queue entry
14117  * @cq: Pointer to CQ to be processed
14118  *
14119  * This routine calls the cq processing routine with the handler for
14120  * fast path CQEs.
14121  *
14122  * The CQ routine returns two values: the first is the calling status,
14123  * which indicates whether work was queued to the  background discovery
14124  * thread. If true, the routine should wakeup the discovery thread;
14125  * the second is the delay parameter. If non-zero, rather than rearming
14126  * the CQ and yet another interrupt, the CQ handler should be queued so
14127  * that it is processed in a subsequent polling action. The value of
14128  * the delay indicates when to reschedule it.
14129  **/
14130 static void
14131 __lpfc_sli4_hba_process_cq(struct lpfc_queue *cq)
14132 {
14133         struct lpfc_hba *phba = cq->phba;
14134         unsigned long delay;
14135         bool workposted = false;
14136 
14137         /* process and rearm the CQ */
14138         workposted |= __lpfc_sli4_process_cq(phba, cq, lpfc_sli4_fp_handle_cqe,
14139                                              &delay);
14140 
14141         if (delay) {
14142                 if (!queue_delayed_work_on(cq->chann, phba->wq,
14143                                            &cq->sched_irqwork, delay))
14144                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
14145                                 "0367 Cannot schedule soft IRQ "
14146                                 "for cqid=%d on CPU %d\n",
14147                                 cq->queue_id, cq->chann);
14148         }
14149 
14150         /* wake up worker thread if there are works to be done */
14151         if (workposted)
14152                 lpfc_worker_wake_up(phba);
14153 }
14154 
14155 /**
14156  * lpfc_sli4_hba_process_cq - fast-path work handler when started by
14157  *   interrupt
14158  * @work: pointer to work element
14159  *
14160  * translates from the work handler and calls the fast-path handler.
14161  **/
14162 static void
14163 lpfc_sli4_hba_process_cq(struct work_struct *work)
14164 {
14165         struct lpfc_queue *cq = container_of(work, struct lpfc_queue, irqwork);
14166 
14167         __lpfc_sli4_hba_process_cq(cq);
14168 }
14169 
14170 /**
14171  * lpfc_sli4_hba_process_cq - fast-path work handler when started by timer
14172  * @work: pointer to work element
14173  *
14174  * translates from the work handler and calls the fast-path handler.
14175  **/
14176 static void
14177 lpfc_sli4_dly_hba_process_cq(struct work_struct *work)
14178 {
14179         struct lpfc_queue *cq = container_of(to_delayed_work(work),
14180                                         struct lpfc_queue, sched_irqwork);
14181 
14182         __lpfc_sli4_hba_process_cq(cq);
14183 }
14184 
14185 /**
14186  * lpfc_sli4_hba_intr_handler - HBA interrupt handler to SLI-4 device
14187  * @irq: Interrupt number.
14188  * @dev_id: The device context pointer.
14189  *
14190  * This function is directly called from the PCI layer as an interrupt
14191  * service routine when device with SLI-4 interface spec is enabled with
14192  * MSI-X multi-message interrupt mode and there is a fast-path FCP IOCB
14193  * ring event in the HBA. However, when the device is enabled with either
14194  * MSI or Pin-IRQ interrupt mode, this function is called as part of the
14195  * device-level interrupt handler. When the PCI slot is in error recovery
14196  * or the HBA is undergoing initialization, the interrupt handler will not
14197  * process the interrupt. The SCSI FCP fast-path ring event are handled in
14198  * the intrrupt context. This function is called without any lock held.
14199  * It gets the hbalock to access and update SLI data structures. Note that,
14200  * the FCP EQ to FCP CQ are one-to-one map such that the FCP EQ index is
14201  * equal to that of FCP CQ index.
14202  *
14203  * The link attention and ELS ring attention events are handled
14204  * by the worker thread. The interrupt handler signals the worker thread
14205  * and returns for these events. This function is called without any lock
14206  * held. It gets the hbalock to access and update SLI data structures.
14207  *
14208  * This function returns IRQ_HANDLED when interrupt is handled else it
14209  * returns IRQ_NONE.
14210  **/
14211 irqreturn_t
14212 lpfc_sli4_hba_intr_handler(int irq, void *dev_id)
14213 {
14214         struct lpfc_hba *phba;
14215         struct lpfc_hba_eq_hdl *hba_eq_hdl;
14216         struct lpfc_queue *fpeq;
14217         unsigned long iflag;
14218         int ecount = 0;
14219         int hba_eqidx;
14220         struct lpfc_eq_intr_info *eqi;
14221         uint32_t icnt;
14222 
14223         /* Get the driver's phba structure from the dev_id */
14224         hba_eq_hdl = (struct lpfc_hba_eq_hdl *)dev_id;
14225         phba = hba_eq_hdl->phba;
14226         hba_eqidx = hba_eq_hdl->idx;
14227 
14228         if (unlikely(!phba))
14229                 return IRQ_NONE;
14230         if (unlikely(!phba->sli4_hba.hdwq))
14231                 return IRQ_NONE;
14232 
14233         /* Get to the EQ struct associated with this vector */
14234         fpeq = phba->sli4_hba.hba_eq_hdl[hba_eqidx].eq;
14235         if (unlikely(!fpeq))
14236                 return IRQ_NONE;
14237 
14238         /* Check device state for handling interrupt */
14239         if (unlikely(lpfc_intr_state_check(phba))) {
14240                 /* Check again for link_state with lock held */
14241                 spin_lock_irqsave(&phba->hbalock, iflag);
14242                 if (phba->link_state < LPFC_LINK_DOWN)
14243                         /* Flush, clear interrupt, and rearm the EQ */
14244                         lpfc_sli4_eq_flush(phba, fpeq);
14245                 spin_unlock_irqrestore(&phba->hbalock, iflag);
14246                 return IRQ_NONE;
14247         }
14248 
14249         eqi = phba->sli4_hba.eq_info;
14250         icnt = this_cpu_inc_return(eqi->icnt);
14251         fpeq->last_cpu = raw_smp_processor_id();
14252 
14253         if (icnt > LPFC_EQD_ISR_TRIGGER &&
14254             phba->cfg_irq_chann == 1 &&
14255             phba->cfg_auto_imax &&
14256             fpeq->q_mode != LPFC_MAX_AUTO_EQ_DELAY &&
14257             phba->sli.sli_flag & LPFC_SLI_USE_EQDR)
14258                 lpfc_sli4_mod_hba_eq_delay(phba, fpeq, LPFC_MAX_AUTO_EQ_DELAY);
14259 
14260         /* process and rearm the EQ */
14261         ecount = lpfc_sli4_process_eq(phba, fpeq, LPFC_QUEUE_REARM);
14262 
14263         if (unlikely(ecount == 0)) {
14264                 fpeq->EQ_no_entry++;
14265                 if (phba->intr_type == MSIX)
14266                         /* MSI-X treated interrupt served as no EQ share INT */
14267                         lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
14268                                         "0358 MSI-X interrupt with no EQE\n");
14269                 else
14270                         /* Non MSI-X treated on interrupt as EQ share INT */
14271                         return IRQ_NONE;
14272         }
14273 
14274         return IRQ_HANDLED;
14275 } /* lpfc_sli4_fp_intr_handler */
14276 
14277 /**
14278  * lpfc_sli4_intr_handler - Device-level interrupt handler for SLI-4 device
14279  * @irq: Interrupt number.
14280  * @dev_id: The device context pointer.
14281  *
14282  * This function is the device-level interrupt handler to device with SLI-4
14283  * interface spec, called from the PCI layer when either MSI or Pin-IRQ
14284  * interrupt mode is enabled and there is an event in the HBA which requires
14285  * driver attention. This function invokes the slow-path interrupt attention
14286  * handling function and fast-path interrupt attention handling function in
14287  * turn to process the relevant HBA attention events. This function is called
14288  * without any lock held. It gets the hbalock to access and update SLI data
14289  * structures.
14290  *
14291  * This function returns IRQ_HANDLED when interrupt is handled, else it
14292  * returns IRQ_NONE.
14293  **/
14294 irqreturn_t
14295 lpfc_sli4_intr_handler(int irq, void *dev_id)
14296 {
14297         struct lpfc_hba  *phba;
14298         irqreturn_t hba_irq_rc;
14299         bool hba_handled = false;
14300         int qidx;
14301 
14302         /* Get the driver's phba structure from the dev_id */
14303         phba = (struct lpfc_hba *)dev_id;
14304 
14305         if (unlikely(!phba))
14306                 return IRQ_NONE;
14307 
14308         /*
14309          * Invoke fast-path host attention interrupt handling as appropriate.
14310          */
14311         for (qidx = 0; qidx < phba->cfg_irq_chann; qidx++) {
14312                 hba_irq_rc = lpfc_sli4_hba_intr_handler(irq,
14313                                         &phba->sli4_hba.hba_eq_hdl[qidx]);
14314                 if (hba_irq_rc == IRQ_HANDLED)
14315                         hba_handled |= true;
14316         }
14317 
14318         return (hba_handled == true) ? IRQ_HANDLED : IRQ_NONE;
14319 } /* lpfc_sli4_intr_handler */
14320 
14321 void lpfc_sli4_poll_hbtimer(struct timer_list *t)
14322 {
14323         struct lpfc_hba *phba = from_timer(phba, t, cpuhp_poll_timer);
14324         struct lpfc_queue *eq;
14325         int i = 0;
14326 
14327         rcu_read_lock();
14328 
14329         list_for_each_entry_rcu(eq, &phba->poll_list, _poll_list)
14330                 i += lpfc_sli4_poll_eq(eq, LPFC_POLL_SLOWPATH);
14331         if (!list_empty(&phba->poll_list))
14332                 mod_timer(&phba->cpuhp_poll_timer,
14333                           jiffies + msecs_to_jiffies(LPFC_POLL_HB));
14334 
14335         rcu_read_unlock();
14336 }
14337 
14338 inline int lpfc_sli4_poll_eq(struct lpfc_queue *eq, uint8_t path)
14339 {
14340         struct lpfc_hba *phba = eq->phba;
14341         int i = 0;
14342 
14343         /*
14344          * Unlocking an irq is one of the entry point to check
14345          * for re-schedule, but we are good for io submission
14346          * path as midlayer does a get_cpu to glue us in. Flush
14347          * out the invalidate queue so we can see the updated
14348          * value for flag.
14349          */
14350         smp_rmb();
14351 
14352         if (READ_ONCE(eq->mode) == LPFC_EQ_POLL)
14353                 /* We will not likely get the completion for the caller
14354                  * during this iteration but i guess that's fine.
14355                  * Future io's coming on this eq should be able to
14356                  * pick it up.  As for the case of single io's, they
14357                  * will be handled through a sched from polling timer
14358                  * function which is currently triggered every 1msec.
14359                  */
14360                 i = lpfc_sli4_process_eq(phba, eq, LPFC_QUEUE_NOARM);
14361 
14362         return i;
14363 }
14364 
14365 static inline void lpfc_sli4_add_to_poll_list(struct lpfc_queue *eq)
14366 {
14367         struct lpfc_hba *phba = eq->phba;
14368 
14369         if (list_empty(&phba->poll_list)) {
14370                 timer_setup(&phba->cpuhp_poll_timer, lpfc_sli4_poll_hbtimer, 0);
14371                 /* kickstart slowpath processing for this eq */
14372                 mod_timer(&phba->cpuhp_poll_timer,
14373                           jiffies + msecs_to_jiffies(LPFC_POLL_HB));
14374         }
14375 
14376         list_add_rcu(&eq->_poll_list, &phba->poll_list);
14377         synchronize_rcu();
14378 }
14379 
14380 static inline void lpfc_sli4_remove_from_poll_list(struct lpfc_queue *eq)
14381 {
14382         struct lpfc_hba *phba = eq->phba;
14383 
14384         /* Disable slowpath processing for this eq.  Kick start the eq
14385          * by RE-ARMING the eq's ASAP
14386          */
14387         list_del_rcu(&eq->_poll_list);
14388         synchronize_rcu();
14389 
14390         if (list_empty(&phba->poll_list))
14391                 del_timer_sync(&phba->cpuhp_poll_timer);
14392 }
14393 
14394 void lpfc_sli4_cleanup_poll_list(struct lpfc_hba *phba)
14395 {
14396         struct lpfc_queue *eq, *next;
14397 
14398         list_for_each_entry_safe(eq, next, &phba->poll_list, _poll_list)
14399                 list_del(&eq->_poll_list);
14400 
14401         INIT_LIST_HEAD(&phba->poll_list);
14402         synchronize_rcu();
14403 }
14404 
14405 static inline void
14406 __lpfc_sli4_switch_eqmode(struct lpfc_queue *eq, uint8_t mode)
14407 {
14408         if (mode == eq->mode)
14409                 return;
14410         /*
14411          * currently this function is only called during a hotplug
14412          * event and the cpu on which this function is executing
14413          * is going offline.  By now the hotplug has instructed
14414          * the scheduler to remove this cpu from cpu active mask.
14415          * So we don't need to work about being put aside by the
14416          * scheduler for a high priority process.  Yes, the inte-
14417          * rrupts could come but they are known to retire ASAP.
14418          */
14419 
14420         /* Disable polling in the fastpath */
14421         WRITE_ONCE(eq->mode, mode);
14422         /* flush out the store buffer */
14423         smp_wmb();
14424 
14425         /*
14426          * Add this eq to the polling list and start polling. For
14427          * a grace period both interrupt handler and poller will
14428          * try to process the eq _but_ that's fine.  We have a
14429          * synchronization mechanism in place (queue_claimed) to
14430          * deal with it.  This is just a draining phase for int-
14431          * errupt handler (not eq's) as we have guranteed through
14432          * barrier that all the CPUs have seen the new CQ_POLLED
14433          * state. which will effectively disable the REARMING of
14434          * the EQ.  The whole idea is eq's die off eventually as
14435          * we are not rearming EQ's anymore.
14436          */
14437         mode ? lpfc_sli4_add_to_poll_list(eq) :
14438                lpfc_sli4_remove_from_poll_list(eq);
14439 }
14440 
14441 void lpfc_sli4_start_polling(struct lpfc_queue *eq)
14442 {
14443         __lpfc_sli4_switch_eqmode(eq, LPFC_EQ_POLL);
14444 }
14445 
14446 void lpfc_sli4_stop_polling(struct lpfc_queue *eq)
14447 {
14448         struct lpfc_hba *phba = eq->phba;
14449 
14450         __lpfc_sli4_switch_eqmode(eq, LPFC_EQ_INTERRUPT);
14451 
14452         /* Kick start for the pending io's in h/w.
14453          * Once we switch back to interrupt processing on a eq
14454          * the io path completion will only arm eq's when it
14455          * receives a completion.  But since eq's are in disa-
14456          * rmed state it doesn't receive a completion.  This
14457          * creates a deadlock scenaro.
14458          */
14459         phba->sli4_hba.sli4_write_eq_db(phba, eq, 0, LPFC_QUEUE_REARM);
14460 }
14461 
14462 /**
14463  * lpfc_sli4_queue_free - free a queue structure and associated memory
14464  * @queue: The queue structure to free.
14465  *
14466  * This function frees a queue structure and the DMAable memory used for
14467  * the host resident queue. This function must be called after destroying the
14468  * queue on the HBA.
14469  **/
14470 void
14471 lpfc_sli4_queue_free(struct lpfc_queue *queue)
14472 {
14473         struct lpfc_dmabuf *dmabuf;
14474 
14475         if (!queue)
14476                 return;
14477 
14478         if (!list_empty(&queue->wq_list))
14479                 list_del(&queue->wq_list);
14480 
14481         while (!list_empty(&queue->page_list)) {
14482                 list_remove_head(&queue->page_list, dmabuf, struct lpfc_dmabuf,
14483                                  list);
14484                 dma_free_coherent(&queue->phba->pcidev->dev, queue->page_size,
14485                                   dmabuf->virt, dmabuf->phys);
14486                 kfree(dmabuf);
14487         }
14488         if (queue->rqbp) {
14489                 lpfc_free_rq_buffer(queue->phba, queue);
14490                 kfree(queue->rqbp);
14491         }
14492 
14493         if (!list_empty(&queue->cpu_list))
14494                 list_del(&queue->cpu_list);
14495 
14496         kfree(queue);
14497         return;
14498 }
14499 
14500 /**
14501  * lpfc_sli4_queue_alloc - Allocate and initialize a queue structure
14502  * @phba: The HBA that this queue is being created on.
14503  * @page_size: The size of a queue page
14504  * @entry_size: The size of each queue entry for this queue.
14505  * @entry count: The number of entries that this queue will handle.
14506  * @cpu: The cpu that will primarily utilize this queue.
14507  *
14508  * This function allocates a queue structure and the DMAable memory used for
14509  * the host resident queue. This function must be called before creating the
14510  * queue on the HBA.
14511  **/
14512 struct lpfc_queue *
14513 lpfc_sli4_queue_alloc(struct lpfc_hba *phba, uint32_t page_size,
14514                       uint32_t entry_size, uint32_t entry_count, int cpu)
14515 {
14516         struct lpfc_queue *queue;
14517         struct lpfc_dmabuf *dmabuf;
14518         uint32_t hw_page_size = phba->sli4_hba.pc_sli4_params.if_page_sz;
14519         uint16_t x, pgcnt;
14520 
14521         if (!phba->sli4_hba.pc_sli4_params.supported)
14522                 hw_page_size = page_size;
14523 
14524         pgcnt = ALIGN(entry_size * entry_count, hw_page_size) / hw_page_size;
14525 
14526         /* If needed, Adjust page count to match the max the adapter supports */
14527         if (pgcnt > phba->sli4_hba.pc_sli4_params.wqpcnt)
14528                 pgcnt = phba->sli4_hba.pc_sli4_params.wqpcnt;
14529 
14530         queue = kzalloc_node(sizeof(*queue) + (sizeof(void *) * pgcnt),
14531                              GFP_KERNEL, cpu_to_node(cpu));
14532         if (!queue)
14533                 return NULL;
14534 
14535         INIT_LIST_HEAD(&queue->list);
14536         INIT_LIST_HEAD(&queue->_poll_list);
14537         INIT_LIST_HEAD(&queue->wq_list);
14538         INIT_LIST_HEAD(&queue->wqfull_list);
14539         INIT_LIST_HEAD(&queue->page_list);
14540         INIT_LIST_HEAD(&queue->child_list);
14541         INIT_LIST_HEAD(&queue->cpu_list);
14542 
14543         /* Set queue parameters now.  If the system cannot provide memory
14544          * resources, the free routine needs to know what was allocated.
14545          */
14546         queue->page_count = pgcnt;
14547         queue->q_pgs = (void **)&queue[1];
14548         queue->entry_cnt_per_pg = hw_page_size / entry_size;
14549         queue->entry_size = entry_size;
14550         queue->entry_count = entry_count;
14551         queue->page_size = hw_page_size;
14552         queue->phba = phba;
14553 
14554         for (x = 0; x < queue->page_count; x++) {
14555                 dmabuf = kzalloc_node(sizeof(*dmabuf), GFP_KERNEL,
14556                                       dev_to_node(&phba->pcidev->dev));
14557                 if (!dmabuf)
14558                         goto out_fail;
14559                 dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
14560                                                   hw_page_size, &dmabuf->phys,
14561                                                   GFP_KERNEL);
14562                 if (!dmabuf->virt) {
14563                         kfree(dmabuf);
14564                         goto out_fail;
14565                 }
14566                 dmabuf->buffer_tag = x;
14567                 list_add_tail(&dmabuf->list, &queue->page_list);
14568                 /* use lpfc_sli4_qe to index a paritcular entry in this page */
14569                 queue->q_pgs[x] = dmabuf->virt;
14570         }
14571         INIT_WORK(&queue->irqwork, lpfc_sli4_hba_process_cq);
14572         INIT_WORK(&queue->spwork, lpfc_sli4_sp_process_cq);
14573         INIT_DELAYED_WORK(&queue->sched_irqwork, lpfc_sli4_dly_hba_process_cq);
14574         INIT_DELAYED_WORK(&queue->sched_spwork, lpfc_sli4_dly_sp_process_cq);
14575 
14576         /* notify_interval will be set during q creation */
14577 
14578         return queue;
14579 out_fail:
14580         lpfc_sli4_queue_free(queue);
14581         return NULL;
14582 }
14583 
14584 /**
14585  * lpfc_dual_chute_pci_bar_map - Map pci base address register to host memory
14586  * @phba: HBA structure that indicates port to create a queue on.
14587  * @pci_barset: PCI BAR set flag.
14588  *
14589  * This function shall perform iomap of the specified PCI BAR address to host
14590  * memory address if not already done so and return it. The returned host
14591  * memory address can be NULL.
14592  */
14593 static void __iomem *
14594 lpfc_dual_chute_pci_bar_map(struct lpfc_hba *phba, uint16_t pci_barset)
14595 {
14596         if (!phba->pcidev)
14597                 return NULL;
14598 
14599         switch (pci_barset) {
14600         case WQ_PCI_BAR_0_AND_1:
14601                 return phba->pci_bar0_memmap_p;
14602         case WQ_PCI_BAR_2_AND_3:
14603                 return phba->pci_bar2_memmap_p;
14604         case WQ_PCI_BAR_4_AND_5:
14605                 return phba->pci_bar4_memmap_p;
14606         default:
14607                 break;
14608         }
14609         return NULL;
14610 }
14611 
14612 /**
14613  * lpfc_modify_hba_eq_delay - Modify Delay Multiplier on EQs
14614  * @phba: HBA structure that EQs are on.
14615  * @startq: The starting EQ index to modify
14616  * @numq: The number of EQs (consecutive indexes) to modify
14617  * @usdelay: amount of delay
14618  *
14619  * This function revises the EQ delay on 1 or more EQs. The EQ delay
14620  * is set either by writing to a register (if supported by the SLI Port)
14621  * or by mailbox command. The mailbox command allows several EQs to be
14622  * updated at once.
14623  *
14624  * The @phba struct is used to send a mailbox command to HBA. The @startq
14625  * is used to get the starting EQ index to change. The @numq value is
14626  * used to specify how many consecutive EQ indexes, starting at EQ index,
14627  * are to be changed. This function is asynchronous and will wait for any
14628  * mailbox commands to finish before returning.
14629  *
14630  * On success this function will return a zero. If unable to allocate
14631  * enough memory this function will return -ENOMEM. If a mailbox command
14632  * fails this function will return -ENXIO. Note: on ENXIO, some EQs may
14633  * have had their delay multipler changed.
14634  **/
14635 void
14636 lpfc_modify_hba_eq_delay(struct lpfc_hba *phba, uint32_t startq,
14637                          uint32_t numq, uint32_t usdelay)
14638 {
14639         struct lpfc_mbx_modify_eq_delay *eq_delay;
14640         LPFC_MBOXQ_t *mbox;
14641         struct lpfc_queue *eq;
14642         int cnt = 0, rc, length;
14643         uint32_t shdr_status, shdr_add_status;
14644         uint32_t dmult;
14645         int qidx;
14646         union lpfc_sli4_cfg_shdr *shdr;
14647 
14648         if (startq >= phba->cfg_irq_chann)
14649                 return;
14650 
14651         if (usdelay > 0xFFFF) {
14652                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_FCP | LOG_NVME,
14653                                 "6429 usdelay %d too large. Scaled down to "
14654                                 "0xFFFF.\n", usdelay);
14655                 usdelay = 0xFFFF;
14656         }
14657 
14658         /* set values by EQ_DELAY register if supported */
14659         if (phba->sli.sli_flag & LPFC_SLI_USE_EQDR) {
14660                 for (qidx = startq; qidx < phba->cfg_irq_chann; qidx++) {
14661                         eq = phba->sli4_hba.hba_eq_hdl[qidx].eq;
14662                         if (!eq)
14663                                 continue;
14664 
14665                         lpfc_sli4_mod_hba_eq_delay(phba, eq, usdelay);
14666 
14667                         if (++cnt >= numq)
14668                                 break;
14669                 }
14670                 return;
14671         }
14672 
14673         /* Otherwise, set values by mailbox cmd */
14674 
14675         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
14676         if (!mbox) {
14677                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_FCP | LOG_NVME,
14678                                 "6428 Failed allocating mailbox cmd buffer."
14679                                 " EQ delay was not set.\n");
14680                 return;
14681         }
14682         length = (sizeof(struct lpfc_mbx_modify_eq_delay) -
14683                   sizeof(struct lpfc_sli4_cfg_mhdr));
14684         lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
14685                          LPFC_MBOX_OPCODE_MODIFY_EQ_DELAY,
14686                          length, LPFC_SLI4_MBX_EMBED);
14687         eq_delay = &mbox->u.mqe.un.eq_delay;
14688 
14689         /* Calculate delay multiper from maximum interrupt per second */
14690         dmult = (usdelay * LPFC_DMULT_CONST) / LPFC_SEC_TO_USEC;
14691         if (dmult)
14692                 dmult--;
14693         if (dmult > LPFC_DMULT_MAX)
14694                 dmult = LPFC_DMULT_MAX;
14695 
14696         for (qidx = startq; qidx < phba->cfg_irq_chann; qidx++) {
14697                 eq = phba->sli4_hba.hba_eq_hdl[qidx].eq;
14698                 if (!eq)
14699                         continue;
14700                 eq->q_mode = usdelay;
14701                 eq_delay->u.request.eq[cnt].eq_id = eq->queue_id;
14702                 eq_delay->u.request.eq[cnt].phase = 0;
14703                 eq_delay->u.request.eq[cnt].delay_multi = dmult;
14704 
14705                 if (++cnt >= numq)
14706                         break;
14707         }
14708         eq_delay->u.request.num_eq = cnt;
14709 
14710         mbox->vport = phba->pport;
14711         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
14712         mbox->ctx_buf = NULL;
14713         mbox->ctx_ndlp = NULL;
14714         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
14715         shdr = (union lpfc_sli4_cfg_shdr *) &eq_delay->header.cfg_shdr;
14716         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
14717         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
14718         if (shdr_status || shdr_add_status || rc) {
14719                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
14720                                 "2512 MODIFY_EQ_DELAY mailbox failed with "
14721                                 "status x%x add_status x%x, mbx status x%x\n",
14722                                 shdr_status, shdr_add_status, rc);
14723         }
14724         mempool_free(mbox, phba->mbox_mem_pool);
14725         return;
14726 }
14727 
14728 /**
14729  * lpfc_eq_create - Create an Event Queue on the HBA
14730  * @phba: HBA structure that indicates port to create a queue on.
14731  * @eq: The queue structure to use to create the event queue.
14732  * @imax: The maximum interrupt per second limit.
14733  *
14734  * This function creates an event queue, as detailed in @eq, on a port,
14735  * described by @phba by sending an EQ_CREATE mailbox command to the HBA.
14736  *
14737  * The @phba struct is used to send mailbox command to HBA. The @eq struct
14738  * is used to get the entry count and entry size that are necessary to
14739  * determine the number of pages to allocate and use for this queue. This
14740  * function will send the EQ_CREATE mailbox command to the HBA to setup the
14741  * event queue. This function is asynchronous and will wait for the mailbox
14742  * command to finish before continuing.
14743  *
14744  * On success this function will return a zero. If unable to allocate enough
14745  * memory this function will return -ENOMEM. If the queue create mailbox command
14746  * fails this function will return -ENXIO.
14747  **/
14748 int
14749 lpfc_eq_create(struct lpfc_hba *phba, struct lpfc_queue *eq, uint32_t imax)
14750 {
14751         struct lpfc_mbx_eq_create *eq_create;
14752         LPFC_MBOXQ_t *mbox;
14753         int rc, length, status = 0;
14754         struct lpfc_dmabuf *dmabuf;
14755         uint32_t shdr_status, shdr_add_status;
14756         union lpfc_sli4_cfg_shdr *shdr;
14757         uint16_t dmult;
14758         uint32_t hw_page_size = phba->sli4_hba.pc_sli4_params.if_page_sz;
14759 
14760         /* sanity check on queue memory */
14761         if (!eq)
14762                 return -ENODEV;
14763         if (!phba->sli4_hba.pc_sli4_params.supported)
14764                 hw_page_size = SLI4_PAGE_SIZE;
14765 
14766         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
14767         if (!mbox)
14768                 return -ENOMEM;
14769         length = (sizeof(struct lpfc_mbx_eq_create) -
14770                   sizeof(struct lpfc_sli4_cfg_mhdr));
14771         lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
14772                          LPFC_MBOX_OPCODE_EQ_CREATE,
14773                          length, LPFC_SLI4_MBX_EMBED);
14774         eq_create = &mbox->u.mqe.un.eq_create;
14775         shdr = (union lpfc_sli4_cfg_shdr *) &eq_create->header.cfg_shdr;
14776         bf_set(lpfc_mbx_eq_create_num_pages, &eq_create->u.request,
14777                eq->page_count);
14778         bf_set(lpfc_eq_context_size, &eq_create->u.request.context,
14779                LPFC_EQE_SIZE);
14780         bf_set(lpfc_eq_context_valid, &eq_create->u.request.context, 1);
14781 
14782         /* Use version 2 of CREATE_EQ if eqav is set */
14783         if (phba->sli4_hba.pc_sli4_params.eqav) {
14784                 bf_set(lpfc_mbox_hdr_version, &shdr->request,
14785                        LPFC_Q_CREATE_VERSION_2);
14786                 bf_set(lpfc_eq_context_autovalid, &eq_create->u.request.context,
14787                        phba->sli4_hba.pc_sli4_params.eqav);
14788         }
14789 
14790         /* don't setup delay multiplier using EQ_CREATE */
14791         dmult = 0;
14792         bf_set(lpfc_eq_context_delay_multi, &eq_create->u.request.context,
14793                dmult);
14794         switch (eq->entry_count) {
14795         default:
14796                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
14797                                 "0360 Unsupported EQ count. (%d)\n",
14798                                 eq->entry_count);
14799                 if (eq->entry_count < 256) {
14800                         status = -EINVAL;
14801                         goto out;
14802                 }
14803                 /* fall through - otherwise default to smallest count */
14804         case 256:
14805                 bf_set(lpfc_eq_context_count, &eq_create->u.request.context,
14806                        LPFC_EQ_CNT_256);
14807                 break;
14808         case 512:
14809                 bf_set(lpfc_eq_context_count, &eq_create->u.request.context,
14810                        LPFC_EQ_CNT_512);
14811                 break;
14812         case 1024:
14813                 bf_set(lpfc_eq_context_count, &eq_create->u.request.context,
14814                        LPFC_EQ_CNT_1024);
14815                 break;
14816         case 2048:
14817                 bf_set(lpfc_eq_context_count, &eq_create->u.request.context,
14818                        LPFC_EQ_CNT_2048);
14819                 break;
14820         case 4096:
14821                 bf_set(lpfc_eq_context_count, &eq_create->u.request.context,
14822                        LPFC_EQ_CNT_4096);
14823                 break;
14824         }
14825         list_for_each_entry(dmabuf, &eq->page_list, list) {
14826                 memset(dmabuf->virt, 0, hw_page_size);
14827                 eq_create->u.request.page[dmabuf->buffer_tag].addr_lo =
14828                                         putPaddrLow(dmabuf->phys);
14829                 eq_create->u.request.page[dmabuf->buffer_tag].addr_hi =
14830                                         putPaddrHigh(dmabuf->phys);
14831         }
14832         mbox->vport = phba->pport;
14833         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
14834         mbox->ctx_buf = NULL;
14835         mbox->ctx_ndlp = NULL;
14836         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
14837         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
14838         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
14839         if (shdr_status || shdr_add_status || rc) {
14840                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
14841                                 "2500 EQ_CREATE mailbox failed with "
14842                                 "status x%x add_status x%x, mbx status x%x\n",
14843                                 shdr_status, shdr_add_status, rc);
14844                 status = -ENXIO;
14845         }
14846         eq->type = LPFC_EQ;
14847         eq->subtype = LPFC_NONE;
14848         eq->queue_id = bf_get(lpfc_mbx_eq_create_q_id, &eq_create->u.response);
14849         if (eq->queue_id == 0xFFFF)
14850                 status = -ENXIO;
14851         eq->host_index = 0;
14852         eq->notify_interval = LPFC_EQ_NOTIFY_INTRVL;
14853         eq->max_proc_limit = LPFC_EQ_MAX_PROC_LIMIT;
14854 out:
14855         mempool_free(mbox, phba->mbox_mem_pool);
14856         return status;
14857 }
14858 
14859 /**
14860  * lpfc_cq_create - Create a Completion Queue on the HBA
14861  * @phba: HBA structure that indicates port to create a queue on.
14862  * @cq: The queue structure to use to create the completion queue.
14863  * @eq: The event queue to bind this completion queue to.
14864  *
14865  * This function creates a completion queue, as detailed in @wq, on a port,
14866  * described by @phba by sending a CQ_CREATE mailbox command to the HBA.
14867  *
14868  * The @phba struct is used to send mailbox command to HBA. The @cq struct
14869  * is used to get the entry count and entry size that are necessary to
14870  * determine the number of pages to allocate and use for this queue. The @eq
14871  * is used to indicate which event queue to bind this completion queue to. This
14872  * function will send the CQ_CREATE mailbox command to the HBA to setup the
14873  * completion queue. This function is asynchronous and will wait for the mailbox
14874  * command to finish before continuing.
14875  *
14876  * On success this function will return a zero. If unable to allocate enough
14877  * memory this function will return -ENOMEM. If the queue create mailbox command
14878  * fails this function will return -ENXIO.
14879  **/
14880 int
14881 lpfc_cq_create(struct lpfc_hba *phba, struct lpfc_queue *cq,
14882                struct lpfc_queue *eq, uint32_t type, uint32_t subtype)
14883 {
14884         struct lpfc_mbx_cq_create *cq_create;
14885         struct lpfc_dmabuf *dmabuf;
14886         LPFC_MBOXQ_t *mbox;
14887         int rc, length, status = 0;
14888         uint32_t shdr_status, shdr_add_status;
14889         union lpfc_sli4_cfg_shdr *shdr;
14890 
14891         /* sanity check on queue memory */
14892         if (!cq || !eq)
14893                 return -ENODEV;
14894 
14895         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
14896         if (!mbox)
14897                 return -ENOMEM;
14898         length = (sizeof(struct lpfc_mbx_cq_create) -
14899                   sizeof(struct lpfc_sli4_cfg_mhdr));
14900         lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
14901                          LPFC_MBOX_OPCODE_CQ_CREATE,
14902                          length, LPFC_SLI4_MBX_EMBED);
14903         cq_create = &mbox->u.mqe.un.cq_create;
14904         shdr = (union lpfc_sli4_cfg_shdr *) &cq_create->header.cfg_shdr;
14905         bf_set(lpfc_mbx_cq_create_num_pages, &cq_create->u.request,
14906                     cq->page_count);
14907         bf_set(lpfc_cq_context_event, &cq_create->u.request.context, 1);
14908         bf_set(lpfc_cq_context_valid, &cq_create->u.request.context, 1);
14909         bf_set(lpfc_mbox_hdr_version, &shdr->request,
14910                phba->sli4_hba.pc_sli4_params.cqv);
14911         if (phba->sli4_hba.pc_sli4_params.cqv == LPFC_Q_CREATE_VERSION_2) {
14912                 bf_set(lpfc_mbx_cq_create_page_size, &cq_create->u.request,
14913                        (cq->page_size / SLI4_PAGE_SIZE));
14914                 bf_set(lpfc_cq_eq_id_2, &cq_create->u.request.context,
14915                        eq->queue_id);
14916                 bf_set(lpfc_cq_context_autovalid, &cq_create->u.request.context,
14917                        phba->sli4_hba.pc_sli4_params.cqav);
14918         } else {
14919                 bf_set(lpfc_cq_eq_id, &cq_create->u.request.context,
14920                        eq->queue_id);
14921         }
14922         switch (cq->entry_count) {
14923         case 2048:
14924         case 4096:
14925                 if (phba->sli4_hba.pc_sli4_params.cqv ==
14926                     LPFC_Q_CREATE_VERSION_2) {
14927                         cq_create->u.request.context.lpfc_cq_context_count =
14928                                 cq->entry_count;
14929                         bf_set(lpfc_cq_context_count,
14930                                &cq_create->u.request.context,
14931                                LPFC_CQ_CNT_WORD7);
14932                         break;
14933                 }
14934                 /* fall through */
14935         default:
14936                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
14937                                 "0361 Unsupported CQ count: "
14938                                 "entry cnt %d sz %d pg cnt %d\n",
14939                                 cq->entry_count, cq->entry_size,
14940                                 cq->page_count);
14941                 if (cq->entry_count < 256) {
14942                         status = -EINVAL;
14943                         goto out;
14944                 }
14945                 /* fall through - otherwise default to smallest count */
14946         case 256:
14947                 bf_set(lpfc_cq_context_count, &cq_create->u.request.context,
14948                        LPFC_CQ_CNT_256);
14949                 break;
14950         case 512:
14951                 bf_set(lpfc_cq_context_count, &cq_create->u.request.context,
14952                        LPFC_CQ_CNT_512);
14953                 break;
14954         case 1024:
14955                 bf_set(lpfc_cq_context_count, &cq_create->u.request.context,
14956                        LPFC_CQ_CNT_1024);
14957                 break;
14958         }
14959         list_for_each_entry(dmabuf, &cq->page_list, list) {
14960                 memset(dmabuf->virt, 0, cq->page_size);
14961                 cq_create->u.request.page[dmabuf->buffer_tag].addr_lo =
14962                                         putPaddrLow(dmabuf->phys);
14963                 cq_create->u.request.page[dmabuf->buffer_tag].addr_hi =
14964                                         putPaddrHigh(dmabuf->phys);
14965         }
14966         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
14967 
14968         /* The IOCTL status is embedded in the mailbox subheader. */
14969         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
14970         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
14971         if (shdr_status || shdr_add_status || rc) {
14972                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
14973                                 "2501 CQ_CREATE mailbox failed with "
14974                                 "status x%x add_status x%x, mbx status x%x\n",
14975                                 shdr_status, shdr_add_status, rc);
14976                 status = -ENXIO;
14977                 goto out;
14978         }
14979         cq->queue_id = bf_get(lpfc_mbx_cq_create_q_id, &cq_create->u.response);
14980         if (cq->queue_id == 0xFFFF) {
14981                 status = -ENXIO;
14982                 goto out;
14983         }
14984         /* link the cq onto the parent eq child list */
14985         list_add_tail(&cq->list, &eq->child_list);
14986         /* Set up completion queue's type and subtype */
14987         cq->type = type;
14988         cq->subtype = subtype;
14989         cq->queue_id = bf_get(lpfc_mbx_cq_create_q_id, &cq_create->u.response);
14990         cq->assoc_qid = eq->queue_id;
14991         cq->assoc_qp = eq;
14992         cq->host_index = 0;
14993         cq->notify_interval = LPFC_CQ_NOTIFY_INTRVL;
14994         cq->max_proc_limit = min(phba->cfg_cq_max_proc_limit, cq->entry_count);
14995 
14996         if (cq->queue_id > phba->sli4_hba.cq_max)
14997                 phba->sli4_hba.cq_max = cq->queue_id;
14998 out:
14999         mempool_free(mbox, phba->mbox_mem_pool);
15000         return status;
15001 }
15002 
15003 /**
15004  * lpfc_cq_create_set - Create a set of Completion Queues on the HBA for MRQ
15005  * @phba: HBA structure that indicates port to create a queue on.
15006  * @cqp: The queue structure array to use to create the completion queues.
15007  * @hdwq: The hardware queue array  with the EQ to bind completion queues to.
15008  *
15009  * This function creates a set of  completion queue, s to support MRQ
15010  * as detailed in @cqp, on a port,
15011  * described by @phba by sending a CREATE_CQ_SET mailbox command to the HBA.
15012  *
15013  * The @phba struct is used to send mailbox command to HBA. The @cq struct
15014  * is used to get the entry count and entry size that are necessary to
15015  * determine the number of pages to allocate and use for this queue. The @eq
15016  * is used to indicate which event queue to bind this completion queue to. This
15017  * function will send the CREATE_CQ_SET mailbox command to the HBA to setup the
15018  * completion queue. This function is asynchronous and will wait for the mailbox
15019  * command to finish before continuing.
15020  *
15021  * On success this function will return a zero. If unable to allocate enough
15022  * memory this function will return -ENOMEM. If the queue create mailbox command
15023  * fails this function will return -ENXIO.
15024  **/
15025 int
15026 lpfc_cq_create_set(struct lpfc_hba *phba, struct lpfc_queue **cqp,
15027                    struct lpfc_sli4_hdw_queue *hdwq, uint32_t type,
15028                    uint32_t subtype)
15029 {
15030         struct lpfc_queue *cq;
15031         struct lpfc_queue *eq;
15032         struct lpfc_mbx_cq_create_set *cq_set;
15033         struct lpfc_dmabuf *dmabuf;
15034         LPFC_MBOXQ_t *mbox;
15035         int rc, length, alloclen, status = 0;
15036         int cnt, idx, numcq, page_idx = 0;
15037         uint32_t shdr_status, shdr_add_status;
15038         union lpfc_sli4_cfg_shdr *shdr;
15039         uint32_t hw_page_size = phba->sli4_hba.pc_sli4_params.if_page_sz;
15040 
15041         /* sanity check on queue memory */
15042         numcq = phba->cfg_nvmet_mrq;
15043         if (!cqp || !hdwq || !numcq)
15044                 return -ENODEV;
15045 
15046         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
15047         if (!mbox)
15048                 return -ENOMEM;
15049 
15050         length = sizeof(struct lpfc_mbx_cq_create_set);
15051         length += ((numcq * cqp[0]->page_count) *
15052                    sizeof(struct dma_address));
15053         alloclen = lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
15054                         LPFC_MBOX_OPCODE_FCOE_CQ_CREATE_SET, length,
15055                         LPFC_SLI4_MBX_NEMBED);
15056         if (alloclen < length) {
15057                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
15058                                 "3098 Allocated DMA memory size (%d) is "
15059                                 "less than the requested DMA memory size "
15060                                 "(%d)\n", alloclen, length);
15061                 status = -ENOMEM;
15062                 goto out;
15063         }
15064         cq_set = mbox->sge_array->addr[0];
15065         shdr = (union lpfc_sli4_cfg_shdr *)&cq_set->cfg_shdr;
15066         bf_set(lpfc_mbox_hdr_version, &shdr->request, 0);
15067 
15068         for (idx = 0; idx < numcq; idx++) {
15069                 cq = cqp[idx];
15070                 eq = hdwq[idx].hba_eq;
15071                 if (!cq || !eq) {
15072                         status = -ENOMEM;
15073                         goto out;
15074                 }
15075                 if (!phba->sli4_hba.pc_sli4_params.supported)
15076                         hw_page_size = cq->page_size;
15077 
15078                 switch (idx) {
15079                 case 0:
15080                         bf_set(lpfc_mbx_cq_create_set_page_size,
15081                                &cq_set->u.request,
15082                                (hw_page_size / SLI4_PAGE_SIZE));
15083                         bf_set(lpfc_mbx_cq_create_set_num_pages,
15084                                &cq_set->u.request, cq->page_count);
15085                         bf_set(lpfc_mbx_cq_create_set_evt,
15086                                &cq_set->u.request, 1);
15087                         bf_set(lpfc_mbx_cq_create_set_valid,
15088                                &cq_set->u.request, 1);
15089                         bf_set(lpfc_mbx_cq_create_set_cqe_size,
15090                                &cq_set->u.request, 0);
15091                         bf_set(lpfc_mbx_cq_create_set_num_cq,
15092                                &cq_set->u.request, numcq);
15093                         bf_set(lpfc_mbx_cq_create_set_autovalid,
15094                                &cq_set->u.request,
15095                                phba->sli4_hba.pc_sli4_params.cqav);
15096                         switch (cq->entry_count) {
15097                         case 2048:
15098                         case 4096:
15099                                 if (phba->sli4_hba.pc_sli4_params.cqv ==
15100                                     LPFC_Q_CREATE_VERSION_2) {
15101                                         bf_set(lpfc_mbx_cq_create_set_cqe_cnt,
15102                                                &cq_set->u.request,
15103                                                 cq->entry_count);
15104                                         bf_set(lpfc_mbx_cq_create_set_cqe_cnt,
15105                                                &cq_set->u.request,
15106                                                LPFC_CQ_CNT_WORD7);
15107                                         break;
15108                                 }
15109                                 /* fall through */
15110                         default:
15111                                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
15112                                                 "3118 Bad CQ count. (%d)\n",
15113                                                 cq->entry_count);
15114                                 if (cq->entry_count < 256) {
15115                                         status = -EINVAL;
15116                                         goto out;
15117                                 }
15118                                 /* fall through - otherwise default to smallest */
15119                         case 256:
15120                                 bf_set(lpfc_mbx_cq_create_set_cqe_cnt,
15121                                        &cq_set->u.request, LPFC_CQ_CNT_256);
15122                                 break;
15123                         case 512:
15124                                 bf_set(lpfc_mbx_cq_create_set_cqe_cnt,
15125                                        &cq_set->u.request, LPFC_CQ_CNT_512);
15126                                 break;
15127                         case 1024:
15128                                 bf_set(lpfc_mbx_cq_create_set_cqe_cnt,
15129                                        &cq_set->u.request, LPFC_CQ_CNT_1024);
15130                                 break;
15131                         }
15132                         bf_set(lpfc_mbx_cq_create_set_eq_id0,
15133                                &cq_set->u.request, eq->queue_id);
15134                         break;
15135                 case 1:
15136                         bf_set(lpfc_mbx_cq_create_set_eq_id1,
15137                                &cq_set->u.request, eq->queue_id);
15138                         break;
15139                 case 2:
15140                         bf_set(lpfc_mbx_cq_create_set_eq_id2,
15141                                &cq_set->u.request, eq->queue_id);
15142                         break;
15143                 case 3:
15144                         bf_set(lpfc_mbx_cq_create_set_eq_id3,
15145                                &cq_set->u.request, eq->queue_id);
15146                         break;
15147                 case 4:
15148                         bf_set(lpfc_mbx_cq_create_set_eq_id4,
15149                                &cq_set->u.request, eq->queue_id);
15150                         break;
15151                 case 5:
15152                         bf_set(lpfc_mbx_cq_create_set_eq_id5,
15153                                &cq_set->u.request, eq->queue_id);
15154                         break;
15155                 case 6:
15156                         bf_set(lpfc_mbx_cq_create_set_eq_id6,
15157                                &cq_set->u.request, eq->queue_id);
15158                         break;
15159                 case 7:
15160                         bf_set(lpfc_mbx_cq_create_set_eq_id7,
15161                                &cq_set->u.request, eq->queue_id);
15162                         break;
15163                 case 8:
15164                         bf_set(lpfc_mbx_cq_create_set_eq_id8,
15165                                &cq_set->u.request, eq->queue_id);
15166                         break;
15167                 case 9:
15168                         bf_set(lpfc_mbx_cq_create_set_eq_id9,
15169                                &cq_set->u.request, eq->queue_id);
15170                         break;
15171                 case 10:
15172                         bf_set(lpfc_mbx_cq_create_set_eq_id10,
15173                                &cq_set->u.request, eq->queue_id);
15174                         break;
15175                 case 11:
15176                         bf_set(lpfc_mbx_cq_create_set_eq_id11,
15177                                &cq_set->u.request, eq->queue_id);
15178                         break;
15179                 case 12:
15180                         bf_set(lpfc_mbx_cq_create_set_eq_id12,
15181                                &cq_set->u.request, eq->queue_id);
15182                         break;
15183                 case 13:
15184                         bf_set(lpfc_mbx_cq_create_set_eq_id13,
15185                                &cq_set->u.request, eq->queue_id);
15186                         break;
15187                 case 14:
15188                         bf_set(lpfc_mbx_cq_create_set_eq_id14,
15189                                &cq_set->u.request, eq->queue_id);
15190                         break;
15191                 case 15:
15192                         bf_set(lpfc_mbx_cq_create_set_eq_id15,
15193                                &cq_set->u.request, eq->queue_id);
15194                         break;
15195                 }
15196 
15197                 /* link the cq onto the parent eq child list */
15198                 list_add_tail(&cq->list, &eq->child_list);
15199                 /* Set up completion queue's type and subtype */
15200                 cq->type = type;
15201                 cq->subtype = subtype;
15202                 cq->assoc_qid = eq->queue_id;
15203                 cq->assoc_qp = eq;
15204                 cq->host_index = 0;
15205                 cq->notify_interval = LPFC_CQ_NOTIFY_INTRVL;
15206                 cq->max_proc_limit = min(phba->cfg_cq_max_proc_limit,
15207                                          cq->entry_count);
15208                 cq->chann = idx;
15209 
15210                 rc = 0;
15211                 list_for_each_entry(dmabuf, &cq->page_list, list) {
15212                         memset(dmabuf->virt, 0, hw_page_size);
15213                         cnt = page_idx + dmabuf->buffer_tag;
15214                         cq_set->u.request.page[cnt].addr_lo =
15215                                         putPaddrLow(dmabuf->phys);
15216                         cq_set->u.request.page[cnt].addr_hi =
15217                                         putPaddrHigh(dmabuf->phys);
15218                         rc++;
15219                 }
15220                 page_idx += rc;
15221         }
15222 
15223         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
15224 
15225         /* The IOCTL status is embedded in the mailbox subheader. */
15226         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
15227         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
15228         if (shdr_status || shdr_add_status || rc) {
15229                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
15230                                 "3119 CQ_CREATE_SET mailbox failed with "
15231                                 "status x%x add_status x%x, mbx status x%x\n",
15232                                 shdr_status, shdr_add_status, rc);
15233                 status = -ENXIO;
15234                 goto out;
15235         }
15236         rc = bf_get(lpfc_mbx_cq_create_set_base_id, &cq_set->u.response);
15237         if (rc == 0xFFFF) {
15238                 status = -ENXIO;
15239                 goto out;
15240         }
15241 
15242         for (idx = 0; idx < numcq; idx++) {
15243                 cq = cqp[idx];
15244                 cq->queue_id = rc + idx;
15245                 if (cq->queue_id > phba->sli4_hba.cq_max)
15246                         phba->sli4_hba.cq_max = cq->queue_id;
15247         }
15248 
15249 out:
15250         lpfc_sli4_mbox_cmd_free(phba, mbox);
15251         return status;
15252 }
15253 
15254 /**
15255  * lpfc_mq_create_fb_init - Send MCC_CREATE without async events registration
15256  * @phba: HBA structure that indicates port to create a queue on.
15257  * @mq: The queue structure to use to create the mailbox queue.
15258  * @mbox: An allocated pointer to type LPFC_MBOXQ_t
15259  * @cq: The completion queue to associate with this cq.
15260  *
15261  * This function provides failback (fb) functionality when the
15262  * mq_create_ext fails on older FW generations.  It's purpose is identical
15263  * to mq_create_ext otherwise.
15264  *
15265  * This routine cannot fail as all attributes were previously accessed and
15266  * initialized in mq_create_ext.
15267  **/
15268 static void
15269 lpfc_mq_create_fb_init(struct lpfc_hba *phba, struct lpfc_queue *mq,
15270                        LPFC_MBOXQ_t *mbox, struct lpfc_queue *cq)
15271 {
15272         struct lpfc_mbx_mq_create *mq_create;
15273         struct lpfc_dmabuf *dmabuf;
15274         int length;
15275 
15276         length = (sizeof(struct lpfc_mbx_mq_create) -
15277                   sizeof(struct lpfc_sli4_cfg_mhdr));
15278         lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
15279                          LPFC_MBOX_OPCODE_MQ_CREATE,
15280                          length, LPFC_SLI4_MBX_EMBED);
15281         mq_create = &mbox->u.mqe.un.mq_create;
15282         bf_set(lpfc_mbx_mq_create_num_pages, &mq_create->u.request,
15283                mq->page_count);
15284         bf_set(lpfc_mq_context_cq_id, &mq_create->u.request.context,
15285                cq->queue_id);
15286         bf_set(lpfc_mq_context_valid, &mq_create->u.request.context, 1);
15287         switch (mq->entry_count) {
15288         case 16:
15289                 bf_set(lpfc_mq_context_ring_size, &mq_create->u.request.context,
15290                        LPFC_MQ_RING_SIZE_16);
15291                 break;
15292         case 32:
15293                 bf_set(lpfc_mq_context_ring_size, &mq_create->u.request.context,
15294                        LPFC_MQ_RING_SIZE_32);
15295                 break;
15296         case 64:
15297                 bf_set(lpfc_mq_context_ring_size, &mq_create->u.request.context,
15298                        LPFC_MQ_RING_SIZE_64);
15299                 break;
15300         case 128:
15301                 bf_set(lpfc_mq_context_ring_size, &mq_create->u.request.context,
15302                        LPFC_MQ_RING_SIZE_128);
15303                 break;
15304         }
15305         list_for_each_entry(dmabuf, &mq->page_list, list) {
15306                 mq_create->u.request.page[dmabuf->buffer_tag].addr_lo =
15307                         putPaddrLow(dmabuf->phys);
15308                 mq_create->u.request.page[dmabuf->buffer_tag].addr_hi =
15309                         putPaddrHigh(dmabuf->phys);
15310         }
15311 }
15312 
15313 /**
15314  * lpfc_mq_create - Create a mailbox Queue on the HBA
15315  * @phba: HBA structure that indicates port to create a queue on.
15316  * @mq: The queue structure to use to create the mailbox queue.
15317  * @cq: The completion queue to associate with this cq.
15318  * @subtype: The queue's subtype.
15319  *
15320  * This function creates a mailbox queue, as detailed in @mq, on a port,
15321  * described by @phba by sending a MQ_CREATE mailbox command to the HBA.
15322  *
15323  * The @phba struct is used to send mailbox command to HBA. The @cq struct
15324  * is used to get the entry count and entry size that are necessary to
15325  * determine the number of pages to allocate and use for this queue. This
15326  * function will send the MQ_CREATE mailbox command to the HBA to setup the
15327  * mailbox queue. This function is asynchronous and will wait for the mailbox
15328  * command to finish before continuing.
15329  *
15330  * On success this function will return a zero. If unable to allocate enough
15331  * memory this function will return -ENOMEM. If the queue create mailbox command
15332  * fails this function will return -ENXIO.
15333  **/
15334 int32_t
15335 lpfc_mq_create(struct lpfc_hba *phba, struct lpfc_queue *mq,
15336                struct lpfc_queue *cq, uint32_t subtype)
15337 {
15338         struct lpfc_mbx_mq_create *mq_create;
15339         struct lpfc_mbx_mq_create_ext *mq_create_ext;
15340         struct lpfc_dmabuf *dmabuf;
15341         LPFC_MBOXQ_t *mbox;
15342         int rc, length, status = 0;
15343         uint32_t shdr_status, shdr_add_status;
15344         union lpfc_sli4_cfg_shdr *shdr;
15345         uint32_t hw_page_size = phba->sli4_hba.pc_sli4_params.if_page_sz;
15346 
15347         /* sanity check on queue memory */
15348         if (!mq || !cq)
15349                 return -ENODEV;
15350         if (!phba->sli4_hba.pc_sli4_params.supported)
15351                 hw_page_size = SLI4_PAGE_SIZE;
15352 
15353         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
15354         if (!mbox)
15355                 return -ENOMEM;
15356         length = (sizeof(struct lpfc_mbx_mq_create_ext) -
15357                   sizeof(struct lpfc_sli4_cfg_mhdr));
15358         lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
15359                          LPFC_MBOX_OPCODE_MQ_CREATE_EXT,
15360                          length, LPFC_SLI4_MBX_EMBED);
15361 
15362         mq_create_ext = &mbox->u.mqe.un.mq_create_ext;
15363         shdr = (union lpfc_sli4_cfg_shdr *) &mq_create_ext->header.cfg_shdr;
15364         bf_set(lpfc_mbx_mq_create_ext_num_pages,
15365                &mq_create_ext->u.request, mq->page_count);
15366         bf_set(lpfc_mbx_mq_create_ext_async_evt_link,
15367                &mq_create_ext->u.request, 1);
15368         bf_set(lpfc_mbx_mq_create_ext_async_evt_fip,
15369                &mq_create_ext->u.request, 1);
15370         bf_set(lpfc_mbx_mq_create_ext_async_evt_group5,
15371                &mq_create_ext->u.request, 1);
15372         bf_set(lpfc_mbx_mq_create_ext_async_evt_fc,
15373                &mq_create_ext->u.request, 1);
15374         bf_set(lpfc_mbx_mq_create_ext_async_evt_sli,
15375                &mq_create_ext->u.request, 1);
15376         bf_set(lpfc_mq_context_valid, &mq_create_ext->u.request.context, 1);
15377         bf_set(lpfc_mbox_hdr_version, &shdr->request,
15378                phba->sli4_hba.pc_sli4_params.mqv);
15379         if (phba->sli4_hba.pc_sli4_params.mqv == LPFC_Q_CREATE_VERSION_1)
15380                 bf_set(lpfc_mbx_mq_create_ext_cq_id, &mq_create_ext->u.request,
15381                        cq->queue_id);
15382         else
15383                 bf_set(lpfc_mq_context_cq_id, &mq_create_ext->u.request.context,
15384                        cq->queue_id);
15385         switch (mq->entry_count) {
15386         default:
15387                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
15388                                 "0362 Unsupported MQ count. (%d)\n",
15389                                 mq->entry_count);
15390                 if (mq->entry_count < 16) {
15391                         status = -EINVAL;
15392                         goto out;
15393                 }
15394                 /* fall through - otherwise default to smallest count */
15395         case 16:
15396                 bf_set(lpfc_mq_context_ring_size,
15397                        &mq_create_ext->u.request.context,
15398                        LPFC_MQ_RING_SIZE_16);
15399                 break;
15400         case 32:
15401                 bf_set(lpfc_mq_context_ring_size,
15402                        &mq_create_ext->u.request.context,
15403                        LPFC_MQ_RING_SIZE_32);
15404                 break;
15405         case 64:
15406                 bf_set(lpfc_mq_context_ring_size,
15407                        &mq_create_ext->u.request.context,
15408                        LPFC_MQ_RING_SIZE_64);
15409                 break;
15410         case 128:
15411                 bf_set(lpfc_mq_context_ring_size,
15412                        &mq_create_ext->u.request.context,
15413                        LPFC_MQ_RING_SIZE_128);
15414                 break;
15415         }
15416         list_for_each_entry(dmabuf, &mq->page_list, list) {
15417                 memset(dmabuf->virt, 0, hw_page_size);
15418                 mq_create_ext->u.request.page[dmabuf->buffer_tag].addr_lo =
15419                                         putPaddrLow(dmabuf->phys);
15420                 mq_create_ext->u.request.page[dmabuf->buffer_tag].addr_hi =
15421                                         putPaddrHigh(dmabuf->phys);
15422         }
15423         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
15424         mq->queue_id = bf_get(lpfc_mbx_mq_create_q_id,
15425                               &mq_create_ext->u.response);
15426         if (rc != MBX_SUCCESS) {
15427                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
15428                                 "2795 MQ_CREATE_EXT failed with "
15429                                 "status x%x. Failback to MQ_CREATE.\n",
15430                                 rc);
15431                 lpfc_mq_create_fb_init(phba, mq, mbox, cq);
15432                 mq_create = &mbox->u.mqe.un.mq_create;
15433                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
15434                 shdr = (union lpfc_sli4_cfg_shdr *) &mq_create->header.cfg_shdr;
15435                 mq->queue_id = bf_get(lpfc_mbx_mq_create_q_id,
15436                                       &mq_create->u.response);
15437         }
15438 
15439         /* The IOCTL status is embedded in the mailbox subheader. */
15440         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
15441         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
15442         if (shdr_status || shdr_add_status || rc) {
15443                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
15444                                 "2502 MQ_CREATE mailbox failed with "
15445                                 "status x%x add_status x%x, mbx status x%x\n",
15446                                 shdr_status, shdr_add_status, rc);
15447                 status = -ENXIO;
15448                 goto out;
15449         }
15450         if (mq->queue_id == 0xFFFF) {
15451                 status = -ENXIO;
15452                 goto out;
15453         }
15454         mq->type = LPFC_MQ;
15455         mq->assoc_qid = cq->queue_id;
15456         mq->subtype = subtype;
15457         mq->host_index = 0;
15458         mq->hba_index = 0;
15459 
15460         /* link the mq onto the parent cq child list */
15461         list_add_tail(&mq->list, &cq->child_list);
15462 out:
15463         mempool_free(mbox, phba->mbox_mem_pool);
15464         return status;
15465 }
15466 
15467 /**
15468  * lpfc_wq_create - Create a Work Queue on the HBA
15469  * @phba: HBA structure that indicates port to create a queue on.
15470  * @wq: The queue structure to use to create the work queue.
15471  * @cq: The completion queue to bind this work queue to.
15472  * @subtype: The subtype of the work queue indicating its functionality.
15473  *
15474  * This function creates a work queue, as detailed in @wq, on a port, described
15475  * by @phba by sending a WQ_CREATE mailbox command to the HBA.
15476  *
15477  * The @phba struct is used to send mailbox command to HBA. The @wq struct
15478  * is used to get the entry count and entry size that are necessary to
15479  * determine the number of pages to allocate and use for this queue. The @cq
15480  * is used to indicate which completion queue to bind this work queue to. This
15481  * function will send the WQ_CREATE mailbox command to the HBA to setup the
15482  * work queue. This function is asynchronous and will wait for the mailbox
15483  * command to finish before continuing.
15484  *
15485  * On success this function will return a zero. If unable to allocate enough
15486  * memory this function will return -ENOMEM. If the queue create mailbox command
15487  * fails this function will return -ENXIO.
15488  **/
15489 int
15490 lpfc_wq_create(struct lpfc_hba *phba, struct lpfc_queue *wq,
15491                struct lpfc_queue *cq, uint32_t subtype)
15492 {
15493         struct lpfc_mbx_wq_create *wq_create;
15494         struct lpfc_dmabuf *dmabuf;
15495         LPFC_MBOXQ_t *mbox;
15496         int rc, length, status = 0;
15497         uint32_t shdr_status, shdr_add_status;
15498         union lpfc_sli4_cfg_shdr *shdr;
15499         uint32_t hw_page_size = phba->sli4_hba.pc_sli4_params.if_page_sz;
15500         struct dma_address *page;
15501         void __iomem *bar_memmap_p;
15502         uint32_t db_offset;
15503         uint16_t pci_barset;
15504         uint8_t dpp_barset;
15505         uint32_t dpp_offset;
15506         unsigned long pg_addr;
15507         uint8_t wq_create_version;
15508 
15509         /* sanity check on queue memory */
15510         if (!wq || !cq)
15511                 return -ENODEV;
15512         if (!phba->sli4_hba.pc_sli4_params.supported)
15513                 hw_page_size = wq->page_size;
15514 
15515         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
15516         if (!mbox)
15517                 return -ENOMEM;
15518         length = (sizeof(struct lpfc_mbx_wq_create) -
15519                   sizeof(struct lpfc_sli4_cfg_mhdr));
15520         lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
15521                          LPFC_MBOX_OPCODE_FCOE_WQ_CREATE,
15522                          length, LPFC_SLI4_MBX_EMBED);
15523         wq_create = &mbox->u.mqe.un.wq_create;
15524         shdr = (union lpfc_sli4_cfg_shdr *) &wq_create->header.cfg_shdr;
15525         bf_set(lpfc_mbx_wq_create_num_pages, &wq_create->u.request,
15526                     wq->page_count);
15527         bf_set(lpfc_mbx_wq_create_cq_id, &wq_create->u.request,
15528                     cq->queue_id);
15529 
15530         /* wqv is the earliest version supported, NOT the latest */
15531         bf_set(lpfc_mbox_hdr_version, &shdr->request,
15532                phba->sli4_hba.pc_sli4_params.wqv);
15533 
15534         if ((phba->sli4_hba.pc_sli4_params.wqsize & LPFC_WQ_SZ128_SUPPORT) ||
15535             (wq->page_size > SLI4_PAGE_SIZE))
15536                 wq_create_version = LPFC_Q_CREATE_VERSION_1;
15537         else
15538                 wq_create_version = LPFC_Q_CREATE_VERSION_0;
15539 
15540 
15541         if (phba->sli4_hba.pc_sli4_params.wqsize & LPFC_WQ_SZ128_SUPPORT)
15542                 wq_create_version = LPFC_Q_CREATE_VERSION_1;
15543         else
15544                 wq_create_version = LPFC_Q_CREATE_VERSION_0;
15545 
15546         switch (wq_create_version) {
15547         case LPFC_Q_CREATE_VERSION_1:
15548                 bf_set(lpfc_mbx_wq_create_wqe_count, &wq_create->u.request_1,
15549                        wq->entry_count);
15550                 bf_set(lpfc_mbox_hdr_version, &shdr->request,
15551                        LPFC_Q_CREATE_VERSION_1);
15552 
15553                 switch (wq->entry_size) {
15554                 default:
15555                 case 64:
15556                         bf_set(lpfc_mbx_wq_create_wqe_size,
15557                                &wq_create->u.request_1,
15558                                LPFC_WQ_WQE_SIZE_64);
15559                         break;
15560                 case 128:
15561                         bf_set(lpfc_mbx_wq_create_wqe_size,
15562                                &wq_create->u.request_1,
15563                                LPFC_WQ_WQE_SIZE_128);
15564                         break;
15565                 }
15566                 /* Request DPP by default */
15567                 bf_set(lpfc_mbx_wq_create_dpp_req, &wq_create->u.request_1, 1);
15568                 bf_set(lpfc_mbx_wq_create_page_size,
15569                        &wq_create->u.request_1,
15570                        (wq->page_size / SLI4_PAGE_SIZE));
15571                 page = wq_create->u.request_1.page;
15572                 break;
15573         default:
15574                 page = wq_create->u.request.page;
15575                 break;
15576         }
15577 
15578         list_for_each_entry(dmabuf, &wq->page_list, list) {
15579                 memset(dmabuf->virt, 0, hw_page_size);
15580                 page[dmabuf->buffer_tag].addr_lo = putPaddrLow(dmabuf->phys);
15581                 page[dmabuf->buffer_tag].addr_hi = putPaddrHigh(dmabuf->phys);
15582         }
15583 
15584         if (phba->sli4_hba.fw_func_mode & LPFC_DUA_MODE)
15585                 bf_set(lpfc_mbx_wq_create_dua, &wq_create->u.request, 1);
15586 
15587         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
15588         /* The IOCTL status is embedded in the mailbox subheader. */
15589         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
15590         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
15591         if (shdr_status || shdr_add_status || rc) {
15592                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
15593                                 "2503 WQ_CREATE mailbox failed with "
15594                                 "status x%x add_status x%x, mbx status x%x\n",
15595                                 shdr_status, shdr_add_status, rc);
15596                 status = -ENXIO;
15597                 goto out;
15598         }
15599 
15600         if (wq_create_version == LPFC_Q_CREATE_VERSION_0)
15601                 wq->queue_id = bf_get(lpfc_mbx_wq_create_q_id,
15602                                         &wq_create->u.response);
15603         else
15604                 wq->queue_id = bf_get(lpfc_mbx_wq_create_v1_q_id,
15605                                         &wq_create->u.response_1);
15606 
15607         if (wq->queue_id == 0xFFFF) {
15608                 status = -ENXIO;
15609                 goto out;
15610         }
15611 
15612         wq->db_format = LPFC_DB_LIST_FORMAT;
15613         if (wq_create_version == LPFC_Q_CREATE_VERSION_0) {
15614                 if (phba->sli4_hba.fw_func_mode & LPFC_DUA_MODE) {
15615                         wq->db_format = bf_get(lpfc_mbx_wq_create_db_format,
15616                                                &wq_create->u.response);
15617                         if ((wq->db_format != LPFC_DB_LIST_FORMAT) &&
15618                             (wq->db_format != LPFC_DB_RING_FORMAT)) {
15619                                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
15620                                                 "3265 WQ[%d] doorbell format "
15621                                                 "not supported: x%x\n",
15622                                                 wq->queue_id, wq->db_format);
15623                                 status = -EINVAL;
15624                                 goto out;
15625                         }
15626                         pci_barset = bf_get(lpfc_mbx_wq_create_bar_set,
15627                                             &wq_create->u.response);
15628                         bar_memmap_p = lpfc_dual_chute_pci_bar_map(phba,
15629                                                                    pci_barset);
15630                         if (!bar_memmap_p) {
15631                                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
15632                                                 "3263 WQ[%d] failed to memmap "
15633                                                 "pci barset:x%x\n",
15634                                                 wq->queue_id, pci_barset);
15635                                 status = -ENOMEM;
15636                                 goto out;
15637                         }
15638                         db_offset = wq_create->u.response.doorbell_offset;
15639                         if ((db_offset != LPFC_ULP0_WQ_DOORBELL) &&
15640                             (db_offset != LPFC_ULP1_WQ_DOORBELL)) {
15641                                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
15642                                                 "3252 WQ[%d] doorbell offset "
15643                                                 "not supported: x%x\n",
15644                                                 wq->queue_id, db_offset);
15645                                 status = -EINVAL;
15646                                 goto out;
15647                         }
15648                         wq->db_regaddr = bar_memmap_p + db_offset;
15649                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
15650                                         "3264 WQ[%d]: barset:x%x, offset:x%x, "
15651                                         "format:x%x\n", wq->queue_id,
15652                                         pci_barset, db_offset, wq->db_format);
15653                 } else
15654                         wq->db_regaddr = phba->sli4_hba.WQDBregaddr;
15655         } else {
15656                 /* Check if DPP was honored by the firmware */
15657                 wq->dpp_enable = bf_get(lpfc_mbx_wq_create_dpp_rsp,
15658                                     &wq_create->u.response_1);
15659                 if (wq->dpp_enable) {
15660                         pci_barset = bf_get(lpfc_mbx_wq_create_v1_bar_set,
15661                                             &wq_create->u.response_1);
15662                         bar_memmap_p = lpfc_dual_chute_pci_bar_map(phba,
15663                                                                    pci_barset);
15664                         if (!bar_memmap_p) {
15665                                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
15666                                                 "3267 WQ[%d] failed to memmap "
15667                                                 "pci barset:x%x\n",
15668                                                 wq->queue_id, pci_barset);
15669                                 status = -ENOMEM;
15670                                 goto out;
15671                         }
15672                         db_offset = wq_create->u.response_1.doorbell_offset;
15673                         wq->db_regaddr = bar_memmap_p + db_offset;
15674                         wq->dpp_id = bf_get(lpfc_mbx_wq_create_dpp_id,
15675                                             &wq_create->u.response_1);
15676                         dpp_barset = bf_get(lpfc_mbx_wq_create_dpp_bar,
15677                                             &wq_create->u.response_1);
15678                         bar_memmap_p = lpfc_dual_chute_pci_bar_map(phba,
15679                                                                    dpp_barset);
15680                         if (!bar_memmap_p) {
15681                                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
15682                                                 "3268 WQ[%d] failed to memmap "
15683                                                 "pci barset:x%x\n",
15684                                                 wq->queue_id, dpp_barset);
15685                                 status = -ENOMEM;
15686                                 goto out;
15687                         }
15688                         dpp_offset = wq_create->u.response_1.dpp_offset;
15689                         wq->dpp_regaddr = bar_memmap_p + dpp_offset;
15690                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
15691                                         "3271 WQ[%d]: barset:x%x, offset:x%x, "
15692                                         "dpp_id:x%x dpp_barset:x%x "
15693                                         "dpp_offset:x%x\n",
15694                                         wq->queue_id, pci_barset, db_offset,
15695                                         wq->dpp_id, dpp_barset, dpp_offset);
15696 
15697                         /* Enable combined writes for DPP aperture */
15698                         pg_addr = (unsigned long)(wq->dpp_regaddr) & PAGE_MASK;
15699 #ifdef CONFIG_X86
15700                         rc = set_memory_wc(pg_addr, 1);
15701                         if (rc) {
15702                                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
15703                                         "3272 Cannot setup Combined "
15704                                         "Write on WQ[%d] - disable DPP\n",
15705                                         wq->queue_id);
15706                                 phba->cfg_enable_dpp = 0;
15707                         }
15708 #else
15709                         phba->cfg_enable_dpp = 0;
15710 #endif
15711                 } else
15712                         wq->db_regaddr = phba->sli4_hba.WQDBregaddr;
15713         }
15714         wq->pring = kzalloc(sizeof(struct lpfc_sli_ring), GFP_KERNEL);
15715         if (wq->pring == NULL) {
15716                 status = -ENOMEM;
15717                 goto out;
15718         }
15719         wq->type = LPFC_WQ;
15720         wq->assoc_qid = cq->queue_id;
15721         wq->subtype = subtype;
15722         wq->host_index = 0;
15723         wq->hba_index = 0;
15724         wq->notify_interval = LPFC_WQ_NOTIFY_INTRVL;
15725 
15726         /* link the wq onto the parent cq child list */
15727         list_add_tail(&wq->list, &cq->child_list);
15728 out:
15729         mempool_free(mbox, phba->mbox_mem_pool);
15730         return status;
15731 }
15732 
15733 /**
15734  * lpfc_rq_create - Create a Receive Queue on the HBA
15735  * @phba: HBA structure that indicates port to create a queue on.
15736  * @hrq: The queue structure to use to create the header receive queue.
15737  * @drq: The queue structure to use to create the data receive queue.
15738  * @cq: The completion queue to bind this work queue to.
15739  *
15740  * This function creates a receive buffer queue pair , as detailed in @hrq and
15741  * @drq, on a port, described by @phba by sending a RQ_CREATE mailbox command
15742  * to the HBA.
15743  *
15744  * The @phba struct is used to send mailbox command to HBA. The @drq and @hrq
15745  * struct is used to get the entry count that is necessary to determine the
15746  * number of pages to use for this queue. The @cq is used to indicate which
15747  * completion queue to bind received buffers that are posted to these queues to.
15748  * This function will send the RQ_CREATE mailbox command to the HBA to setup the
15749  * receive queue pair. This function is asynchronous and will wait for the
15750  * mailbox command to finish before continuing.
15751  *
15752  * On success this function will return a zero. If unable to allocate enough
15753  * memory this function will return -ENOMEM. If the queue create mailbox command
15754  * fails this function will return -ENXIO.
15755  **/
15756 int
15757 lpfc_rq_create(struct lpfc_hba *phba, struct lpfc_queue *hrq,
15758                struct lpfc_queue *drq, struct lpfc_queue *cq, uint32_t subtype)
15759 {
15760         struct lpfc_mbx_rq_create *rq_create;
15761         struct lpfc_dmabuf *dmabuf;
15762         LPFC_MBOXQ_t *mbox;
15763         int rc, length, status = 0;
15764         uint32_t shdr_status, shdr_add_status;
15765         union lpfc_sli4_cfg_shdr *shdr;
15766         uint32_t hw_page_size = phba->sli4_hba.pc_sli4_params.if_page_sz;
15767         void __iomem *bar_memmap_p;
15768         uint32_t db_offset;
15769         uint16_t pci_barset;
15770 
15771         /* sanity check on queue memory */
15772         if (!hrq || !drq || !cq)
15773                 return -ENODEV;
15774         if (!phba->sli4_hba.pc_sli4_params.supported)
15775                 hw_page_size = SLI4_PAGE_SIZE;
15776 
15777         if (hrq->entry_count != drq->entry_count)
15778                 return -EINVAL;
15779         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
15780         if (!mbox)
15781                 return -ENOMEM;
15782         length = (sizeof(struct lpfc_mbx_rq_create) -
15783                   sizeof(struct lpfc_sli4_cfg_mhdr));
15784         lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
15785                          LPFC_MBOX_OPCODE_FCOE_RQ_CREATE,
15786                          length, LPFC_SLI4_MBX_EMBED);
15787         rq_create = &mbox->u.mqe.un.rq_create;
15788         shdr = (union lpfc_sli4_cfg_shdr *) &rq_create->header.cfg_shdr;
15789         bf_set(lpfc_mbox_hdr_version, &shdr->request,
15790                phba->sli4_hba.pc_sli4_params.rqv);
15791         if (phba->sli4_hba.pc_sli4_params.rqv == LPFC_Q_CREATE_VERSION_1) {
15792                 bf_set(lpfc_rq_context_rqe_count_1,
15793                        &rq_create->u.request.context,
15794                        hrq->entry_count);
15795                 rq_create->u.request.context.buffer_size = LPFC_HDR_BUF_SIZE;
15796                 bf_set(lpfc_rq_context_rqe_size,
15797                        &rq_create->u.request.context,
15798                        LPFC_RQE_SIZE_8);
15799                 bf_set(lpfc_rq_context_page_size,
15800                        &rq_create->u.request.context,
15801                        LPFC_RQ_PAGE_SIZE_4096);
15802         } else {
15803                 switch (hrq->entry_count) {
15804                 default:
15805                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
15806                                         "2535 Unsupported RQ count. (%d)\n",
15807                                         hrq->entry_count);
15808                         if (hrq->entry_count < 512) {
15809                                 status = -EINVAL;
15810                                 goto out;
15811                         }
15812                         /* fall through - otherwise default to smallest count */
15813                 case 512:
15814                         bf_set(lpfc_rq_context_rqe_count,
15815                                &rq_create->u.request.context,
15816                                LPFC_RQ_RING_SIZE_512);
15817                         break;
15818                 case 1024:
15819                         bf_set(lpfc_rq_context_rqe_count,
15820                                &rq_create->u.request.context,
15821                                LPFC_RQ_RING_SIZE_1024);
15822                         break;
15823                 case 2048:
15824                         bf_set(lpfc_rq_context_rqe_count,
15825                                &rq_create->u.request.context,
15826                                LPFC_RQ_RING_SIZE_2048);
15827                         break;
15828                 case 4096:
15829                         bf_set(lpfc_rq_context_rqe_count,
15830                                &rq_create->u.request.context,
15831                                LPFC_RQ_RING_SIZE_4096);
15832                         break;
15833                 }
15834                 bf_set(lpfc_rq_context_buf_size, &rq_create->u.request.context,
15835                        LPFC_HDR_BUF_SIZE);
15836         }
15837         bf_set(lpfc_rq_context_cq_id, &rq_create->u.request.context,
15838                cq->queue_id);
15839         bf_set(lpfc_mbx_rq_create_num_pages, &rq_create->u.request,
15840                hrq->page_count);
15841         list_for_each_entry(dmabuf, &hrq->page_list, list) {
15842                 memset(dmabuf->virt, 0, hw_page_size);
15843                 rq_create->u.request.page[dmabuf->buffer_tag].addr_lo =
15844                                         putPaddrLow(dmabuf->phys);
15845                 rq_create->u.request.page[dmabuf->buffer_tag].addr_hi =
15846                                         putPaddrHigh(dmabuf->phys);
15847         }
15848         if (phba->sli4_hba.fw_func_mode & LPFC_DUA_MODE)
15849                 bf_set(lpfc_mbx_rq_create_dua, &rq_create->u.request, 1);
15850 
15851         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
15852         /* The IOCTL status is embedded in the mailbox subheader. */
15853         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
15854         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
15855         if (shdr_status || shdr_add_status || rc) {
15856                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
15857                                 "2504 RQ_CREATE mailbox failed with "
15858                                 "status x%x add_status x%x, mbx status x%x\n",
15859                                 shdr_status, shdr_add_status, rc);
15860                 status = -ENXIO;
15861                 goto out;
15862         }
15863         hrq->queue_id = bf_get(lpfc_mbx_rq_create_q_id, &rq_create->u.response);
15864         if (hrq->queue_id == 0xFFFF) {
15865                 status = -ENXIO;
15866                 goto out;
15867         }
15868 
15869         if (phba->sli4_hba.fw_func_mode & LPFC_DUA_MODE) {
15870                 hrq->db_format = bf_get(lpfc_mbx_rq_create_db_format,
15871                                         &rq_create->u.response);
15872                 if ((hrq->db_format != LPFC_DB_LIST_FORMAT) &&
15873                     (hrq->db_format != LPFC_DB_RING_FORMAT)) {
15874                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
15875                                         "3262 RQ [%d] doorbell format not "
15876                                         "supported: x%x\n", hrq->queue_id,
15877                                         hrq->db_format);
15878                         status = -EINVAL;
15879                         goto out;
15880                 }
15881 
15882                 pci_barset = bf_get(lpfc_mbx_rq_create_bar_set,
15883                                     &rq_create->u.response);
15884                 bar_memmap_p = lpfc_dual_chute_pci_bar_map(phba, pci_barset);
15885                 if (!bar_memmap_p) {
15886                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
15887                                         "3269 RQ[%d] failed to memmap pci "
15888                                         "barset:x%x\n", hrq->queue_id,
15889                                         pci_barset);
15890                         status = -ENOMEM;
15891                         goto out;
15892                 }
15893 
15894                 db_offset = rq_create->u.response.doorbell_offset;
15895                 if ((db_offset != LPFC_ULP0_RQ_DOORBELL) &&
15896                     (db_offset != LPFC_ULP1_RQ_DOORBELL)) {
15897                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
15898                                         "3270 RQ[%d] doorbell offset not "
15899                                         "supported: x%x\n", hrq->queue_id,
15900                                         db_offset);
15901                         status = -EINVAL;
15902                         goto out;
15903                 }
15904                 hrq->db_regaddr = bar_memmap_p + db_offset;
15905                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
15906                                 "3266 RQ[qid:%d]: barset:x%x, offset:x%x, "
15907                                 "format:x%x\n", hrq->queue_id, pci_barset,
15908                                 db_offset, hrq->db_format);
15909         } else {
15910                 hrq->db_format = LPFC_DB_RING_FORMAT;
15911                 hrq->db_regaddr = phba->sli4_hba.RQDBregaddr;
15912         }
15913         hrq->type = LPFC_HRQ;
15914         hrq->assoc_qid = cq->queue_id;
15915         hrq->subtype = subtype;
15916         hrq->host_index = 0;
15917         hrq->hba_index = 0;
15918         hrq->notify_interval = LPFC_RQ_NOTIFY_INTRVL;
15919 
15920         /* now create the data queue */
15921         lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
15922                          LPFC_MBOX_OPCODE_FCOE_RQ_CREATE,
15923                          length, LPFC_SLI4_MBX_EMBED);
15924         bf_set(lpfc_mbox_hdr_version, &shdr->request,
15925                phba->sli4_hba.pc_sli4_params.rqv);
15926         if (phba->sli4_hba.pc_sli4_params.rqv == LPFC_Q_CREATE_VERSION_1) {
15927                 bf_set(lpfc_rq_context_rqe_count_1,
15928                        &rq_create->u.request.context, hrq->entry_count);
15929                 if (subtype == LPFC_NVMET)
15930                         rq_create->u.request.context.buffer_size =
15931                                 LPFC_NVMET_DATA_BUF_SIZE;
15932                 else
15933                         rq_create->u.request.context.buffer_size =
15934                                 LPFC_DATA_BUF_SIZE;
15935                 bf_set(lpfc_rq_context_rqe_size, &rq_create->u.request.context,
15936                        LPFC_RQE_SIZE_8);
15937                 bf_set(lpfc_rq_context_page_size, &rq_create->u.request.context,
15938                        (PAGE_SIZE/SLI4_PAGE_SIZE));
15939         } else {
15940                 switch (drq->entry_count) {
15941                 default:
15942                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
15943                                         "2536 Unsupported RQ count. (%d)\n",
15944                                         drq->entry_count);
15945                         if (drq->entry_count < 512) {
15946                                 status = -EINVAL;
15947                                 goto out;
15948                         }
15949                         /* fall through - otherwise default to smallest count */
15950                 case 512:
15951                         bf_set(lpfc_rq_context_rqe_count,
15952                                &rq_create->u.request.context,
15953                                LPFC_RQ_RING_SIZE_512);
15954                         break;
15955                 case 1024:
15956                         bf_set(lpfc_rq_context_rqe_count,
15957                                &rq_create->u.request.context,
15958                                LPFC_RQ_RING_SIZE_1024);
15959                         break;
15960                 case 2048:
15961                         bf_set(lpfc_rq_context_rqe_count,
15962                                &rq_create->u.request.context,
15963                                LPFC_RQ_RING_SIZE_2048);
15964                         break;
15965                 case 4096:
15966                         bf_set(lpfc_rq_context_rqe_count,
15967                                &rq_create->u.request.context,
15968                                LPFC_RQ_RING_SIZE_4096);
15969                         break;
15970                 }
15971                 if (subtype == LPFC_NVMET)
15972                         bf_set(lpfc_rq_context_buf_size,
15973                                &rq_create->u.request.context,
15974                                LPFC_NVMET_DATA_BUF_SIZE);
15975                 else
15976                         bf_set(lpfc_rq_context_buf_size,
15977                                &rq_create->u.request.context,
15978                                LPFC_DATA_BUF_SIZE);
15979         }
15980         bf_set(lpfc_rq_context_cq_id, &rq_create->u.request.context,
15981                cq->queue_id);
15982         bf_set(lpfc_mbx_rq_create_num_pages, &rq_create->u.request,
15983                drq->page_count);
15984         list_for_each_entry(dmabuf, &drq->page_list, list) {
15985                 rq_create->u.request.page[dmabuf->buffer_tag].addr_lo =
15986                                         putPaddrLow(dmabuf->phys);
15987                 rq_create->u.request.page[dmabuf->buffer_tag].addr_hi =
15988                                         putPaddrHigh(dmabuf->phys);
15989         }
15990         if (phba->sli4_hba.fw_func_mode & LPFC_DUA_MODE)
15991                 bf_set(lpfc_mbx_rq_create_dua, &rq_create->u.request, 1);
15992         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
15993         /* The IOCTL status is embedded in the mailbox subheader. */
15994         shdr = (union lpfc_sli4_cfg_shdr *) &rq_create->header.cfg_shdr;
15995         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
15996         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
15997         if (shdr_status || shdr_add_status || rc) {
15998                 status = -ENXIO;
15999                 goto out;
16000         }
16001         drq->queue_id = bf_get(lpfc_mbx_rq_create_q_id, &rq_create->u.response);
16002         if (drq->queue_id == 0xFFFF) {
16003                 status = -ENXIO;
16004                 goto out;
16005         }
16006         drq->type = LPFC_DRQ;
16007         drq->assoc_qid = cq->queue_id;
16008         drq->subtype = subtype;
16009         drq->host_index = 0;
16010         drq->hba_index = 0;
16011         drq->notify_interval = LPFC_RQ_NOTIFY_INTRVL;
16012 
16013         /* link the header and data RQs onto the parent cq child list */
16014         list_add_tail(&hrq->list, &cq->child_list);
16015         list_add_tail(&drq->list, &cq->child_list);
16016 
16017 out:
16018         mempool_free(mbox, phba->mbox_mem_pool);
16019         return status;
16020 }
16021 
16022 /**
16023  * lpfc_mrq_create - Create MRQ Receive Queues on the HBA
16024  * @phba: HBA structure that indicates port to create a queue on.
16025  * @hrqp: The queue structure array to use to create the header receive queues.
16026  * @drqp: The queue structure array to use to create the data receive queues.
16027  * @cqp: The completion queue array to bind these receive queues to.
16028  *
16029  * This function creates a receive buffer queue pair , as detailed in @hrq and
16030  * @drq, on a port, described by @phba by sending a RQ_CREATE mailbox command
16031  * to the HBA.
16032  *
16033  * The @phba struct is used to send mailbox command to HBA. The @drq and @hrq
16034  * struct is used to get the entry count that is necessary to determine the
16035  * number of pages to use for this queue. The @cq is used to indicate which
16036  * completion queue to bind received buffers that are posted to these queues to.
16037  * This function will send the RQ_CREATE mailbox command to the HBA to setup the
16038  * receive queue pair. This function is asynchronous and will wait for the
16039  * mailbox command to finish before continuing.
16040  *
16041  * On success this function will return a zero. If unable to allocate enough
16042  * memory this function will return -ENOMEM. If the queue create mailbox command
16043  * fails this function will return -ENXIO.
16044  **/
16045 int
16046 lpfc_mrq_create(struct lpfc_hba *phba, struct lpfc_queue **hrqp,
16047                 struct lpfc_queue **drqp, struct lpfc_queue **cqp,
16048                 uint32_t subtype)
16049 {
16050         struct lpfc_queue *hrq, *drq, *cq;
16051         struct lpfc_mbx_rq_create_v2 *rq_create;
16052         struct lpfc_dmabuf *dmabuf;
16053         LPFC_MBOXQ_t *mbox;
16054         int rc, length, alloclen, status = 0;
16055         int cnt, idx, numrq, page_idx = 0;
16056         uint32_t shdr_status, shdr_add_status;
16057         union lpfc_sli4_cfg_shdr *shdr;
16058         uint32_t hw_page_size = phba->sli4_hba.pc_sli4_params.if_page_sz;
16059 
16060         numrq = phba->cfg_nvmet_mrq;
16061         /* sanity check on array memory */
16062         if (!hrqp || !drqp || !cqp || !numrq)
16063                 return -ENODEV;
16064         if (!phba->sli4_hba.pc_sli4_params.supported)
16065                 hw_page_size = SLI4_PAGE_SIZE;
16066 
16067         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
16068         if (!mbox)
16069                 return -ENOMEM;
16070 
16071         length = sizeof(struct lpfc_mbx_rq_create_v2);
16072         length += ((2 * numrq * hrqp[0]->page_count) *
16073                    sizeof(struct dma_address));
16074 
16075         alloclen = lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
16076                                     LPFC_MBOX_OPCODE_FCOE_RQ_CREATE, length,
16077                                     LPFC_SLI4_MBX_NEMBED);
16078         if (alloclen < length) {
16079                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
16080                                 "3099 Allocated DMA memory size (%d) is "
16081                                 "less than the requested DMA memory size "
16082                                 "(%d)\n", alloclen, length);
16083                 status = -ENOMEM;
16084                 goto out;
16085         }
16086 
16087 
16088 
16089         rq_create = mbox->sge_array->addr[0];
16090         shdr = (union lpfc_sli4_cfg_shdr *)&rq_create->cfg_shdr;
16091 
16092         bf_set(lpfc_mbox_hdr_version, &shdr->request, LPFC_Q_CREATE_VERSION_2);
16093         cnt = 0;
16094 
16095         for (idx = 0; idx < numrq; idx++) {
16096                 hrq = hrqp[idx];
16097                 drq = drqp[idx];
16098                 cq  = cqp[idx];
16099 
16100                 /* sanity check on queue memory */
16101                 if (!hrq || !drq || !cq) {
16102                         status = -ENODEV;
16103                         goto out;
16104                 }
16105 
16106                 if (hrq->entry_count != drq->entry_count) {
16107                         status = -EINVAL;
16108                         goto out;
16109                 }
16110 
16111                 if (idx == 0) {
16112                         bf_set(lpfc_mbx_rq_create_num_pages,
16113                                &rq_create->u.request,
16114                                hrq->page_count);
16115                         bf_set(lpfc_mbx_rq_create_rq_cnt,
16116                                &rq_create->u.request, (numrq * 2));
16117                         bf_set(lpfc_mbx_rq_create_dnb, &rq_create->u.request,
16118                                1);
16119                         bf_set(lpfc_rq_context_base_cq,
16120                                &rq_create->u.request.context,
16121                                cq->queue_id);
16122                         bf_set(lpfc_rq_context_data_size,
16123                                &rq_create->u.request.context,
16124                                LPFC_NVMET_DATA_BUF_SIZE);
16125                         bf_set(lpfc_rq_context_hdr_size,
16126                                &rq_create->u.request.context,
16127                                LPFC_HDR_BUF_SIZE);
16128                         bf_set(lpfc_rq_context_rqe_count_1,
16129                                &rq_create->u.request.context,
16130                                hrq->entry_count);
16131                         bf_set(lpfc_rq_context_rqe_size,
16132                                &rq_create->u.request.context,
16133                                LPFC_RQE_SIZE_8);
16134                         bf_set(lpfc_rq_context_page_size,
16135                                &rq_create->u.request.context,
16136                                (PAGE_SIZE/SLI4_PAGE_SIZE));
16137                 }
16138                 rc = 0;
16139                 list_for_each_entry(dmabuf, &hrq->page_list, list) {
16140                         memset(dmabuf->virt, 0, hw_page_size);
16141                         cnt = page_idx + dmabuf->buffer_tag;
16142                         rq_create->u.request.page[cnt].addr_lo =
16143                                         putPaddrLow(dmabuf->phys);
16144                         rq_create->u.request.page[cnt].addr_hi =
16145                                         putPaddrHigh(dmabuf->phys);
16146                         rc++;
16147                 }
16148                 page_idx += rc;
16149 
16150                 rc = 0;
16151                 list_for_each_entry(dmabuf, &drq->page_list, list) {
16152                         memset(dmabuf->virt, 0, hw_page_size);
16153                         cnt = page_idx + dmabuf->buffer_tag;
16154                         rq_create->u.request.page[cnt].addr_lo =
16155                                         putPaddrLow(dmabuf->phys);
16156                         rq_create->u.request.page[cnt].addr_hi =
16157                                         putPaddrHigh(dmabuf->phys);
16158                         rc++;
16159                 }
16160                 page_idx += rc;
16161 
16162                 hrq->db_format = LPFC_DB_RING_FORMAT;
16163                 hrq->db_regaddr = phba->sli4_hba.RQDBregaddr;
16164                 hrq->type = LPFC_HRQ;
16165                 hrq->assoc_qid = cq->queue_id;
16166                 hrq->subtype = subtype;
16167                 hrq->host_index = 0;
16168                 hrq->hba_index = 0;
16169                 hrq->notify_interval = LPFC_RQ_NOTIFY_INTRVL;
16170 
16171                 drq->db_format = LPFC_DB_RING_FORMAT;
16172                 drq->db_regaddr = phba->sli4_hba.RQDBregaddr;
16173                 drq->type = LPFC_DRQ;
16174                 drq->assoc_qid = cq->queue_id;
16175                 drq->subtype = subtype;
16176                 drq->host_index = 0;
16177                 drq->hba_index = 0;
16178                 drq->notify_interval = LPFC_RQ_NOTIFY_INTRVL;
16179 
16180                 list_add_tail(&hrq->list, &cq->child_list);
16181                 list_add_tail(&drq->list, &cq->child_list);
16182         }
16183 
16184         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
16185         /* The IOCTL status is embedded in the mailbox subheader. */
16186         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
16187         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
16188         if (shdr_status || shdr_add_status || rc) {
16189                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
16190                                 "3120 RQ_CREATE mailbox failed with "
16191                                 "status x%x add_status x%x, mbx status x%x\n",
16192                                 shdr_status, shdr_add_status, rc);
16193                 status = -ENXIO;
16194                 goto out;
16195         }
16196         rc = bf_get(lpfc_mbx_rq_create_q_id, &rq_create->u.response);
16197         if (rc == 0xFFFF) {
16198                 status = -ENXIO;
16199                 goto out;
16200         }
16201 
16202         /* Initialize all RQs with associated queue id */
16203         for (idx = 0; idx < numrq; idx++) {
16204                 hrq = hrqp[idx];
16205                 hrq->queue_id = rc + (2 * idx);
16206                 drq = drqp[idx];
16207                 drq->queue_id = rc + (2 * idx) + 1;
16208         }
16209 
16210 out:
16211         lpfc_sli4_mbox_cmd_free(phba, mbox);
16212         return status;
16213 }
16214 
16215 /**
16216  * lpfc_eq_destroy - Destroy an event Queue on the HBA
16217  * @eq: The queue structure associated with the queue to destroy.
16218  *
16219  * This function destroys a queue, as detailed in @eq by sending an mailbox
16220  * command, specific to the type of queue, to the HBA.
16221  *
16222  * The @eq struct is used to get the queue ID of the queue to destroy.
16223  *
16224  * On success this function will return a zero. If the queue destroy mailbox
16225  * command fails this function will return -ENXIO.
16226  **/
16227 int
16228 lpfc_eq_destroy(struct lpfc_hba *phba, struct lpfc_queue *eq)
16229 {
16230         LPFC_MBOXQ_t *mbox;
16231         int rc, length, status = 0;
16232         uint32_t shdr_status, shdr_add_status;
16233         union lpfc_sli4_cfg_shdr *shdr;
16234 
16235         /* sanity check on queue memory */
16236         if (!eq)
16237                 return -ENODEV;
16238 
16239         mbox = mempool_alloc(eq->phba->mbox_mem_pool, GFP_KERNEL);
16240         if (!mbox)
16241                 return -ENOMEM;
16242         length = (sizeof(struct lpfc_mbx_eq_destroy) -
16243                   sizeof(struct lpfc_sli4_cfg_mhdr));
16244         lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
16245                          LPFC_MBOX_OPCODE_EQ_DESTROY,
16246                          length, LPFC_SLI4_MBX_EMBED);
16247         bf_set(lpfc_mbx_eq_destroy_q_id, &mbox->u.mqe.un.eq_destroy.u.request,
16248                eq->queue_id);
16249         mbox->vport = eq->phba->pport;
16250         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
16251 
16252         rc = lpfc_sli_issue_mbox(eq->phba, mbox, MBX_POLL);
16253         /* The IOCTL status is embedded in the mailbox subheader. */
16254         shdr = (union lpfc_sli4_cfg_shdr *)
16255                 &mbox->u.mqe.un.eq_destroy.header.cfg_shdr;
16256         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
16257         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
16258         if (shdr_status || shdr_add_status || rc) {
16259                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
16260                                 "2505 EQ_DESTROY mailbox failed with "
16261                                 "status x%x add_status x%x, mbx status x%x\n",
16262                                 shdr_status, shdr_add_status, rc);
16263                 status = -ENXIO;
16264         }
16265 
16266         /* Remove eq from any list */
16267         list_del_init(&eq->list);
16268         mempool_free(mbox, eq->phba->mbox_mem_pool);
16269         return status;
16270 }
16271 
16272 /**
16273  * lpfc_cq_destroy - Destroy a Completion Queue on the HBA
16274  * @cq: The queue structure associated with the queue to destroy.
16275  *
16276  * This function destroys a queue, as detailed in @cq by sending an mailbox
16277  * command, specific to the type of queue, to the HBA.
16278  *
16279  * The @cq struct is used to get the queue ID of the queue to destroy.
16280  *
16281  * On success this function will return a zero. If the queue destroy mailbox
16282  * command fails this function will return -ENXIO.
16283  **/
16284 int
16285 lpfc_cq_destroy(struct lpfc_hba *phba, struct lpfc_queue *cq)
16286 {
16287         LPFC_MBOXQ_t *mbox;
16288         int rc, length, status = 0;
16289         uint32_t shdr_status, shdr_add_status;
16290         union lpfc_sli4_cfg_shdr *shdr;
16291 
16292         /* sanity check on queue memory */
16293         if (!cq)
16294                 return -ENODEV;
16295         mbox = mempool_alloc(cq->phba->mbox_mem_pool, GFP_KERNEL);
16296         if (!mbox)
16297                 return -ENOMEM;
16298         length = (sizeof(struct lpfc_mbx_cq_destroy) -
16299                   sizeof(struct lpfc_sli4_cfg_mhdr));
16300         lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
16301                          LPFC_MBOX_OPCODE_CQ_DESTROY,
16302                          length, LPFC_SLI4_MBX_EMBED);
16303         bf_set(lpfc_mbx_cq_destroy_q_id, &mbox->u.mqe.un.cq_destroy.u.request,
16304                cq->queue_id);
16305         mbox->vport = cq->phba->pport;
16306         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
16307         rc = lpfc_sli_issue_mbox(cq->phba, mbox, MBX_POLL);
16308         /* The IOCTL status is embedded in the mailbox subheader. */
16309         shdr = (union lpfc_sli4_cfg_shdr *)
16310                 &mbox->u.mqe.un.wq_create.header.cfg_shdr;
16311         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
16312         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
16313         if (shdr_status || shdr_add_status || rc) {
16314                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
16315                                 "2506 CQ_DESTROY mailbox failed with "
16316                                 "status x%x add_status x%x, mbx status x%x\n",
16317                                 shdr_status, shdr_add_status, rc);
16318                 status = -ENXIO;
16319         }
16320         /* Remove cq from any list */
16321         list_del_init(&cq->list);
16322         mempool_free(mbox, cq->phba->mbox_mem_pool);
16323         return status;
16324 }
16325 
16326 /**
16327  * lpfc_mq_destroy - Destroy a Mailbox Queue on the HBA
16328  * @qm: The queue structure associated with the queue to destroy.
16329  *
16330  * This function destroys a queue, as detailed in @mq by sending an mailbox
16331  * command, specific to the type of queue, to the HBA.
16332  *
16333  * The @mq struct is used to get the queue ID of the queue to destroy.
16334  *
16335  * On success this function will return a zero. If the queue destroy mailbox
16336  * command fails this function will return -ENXIO.
16337  **/
16338 int
16339 lpfc_mq_destroy(struct lpfc_hba *phba, struct lpfc_queue *mq)
16340 {
16341         LPFC_MBOXQ_t *mbox;
16342         int rc, length, status = 0;
16343         uint32_t shdr_status, shdr_add_status;
16344         union lpfc_sli4_cfg_shdr *shdr;
16345 
16346         /* sanity check on queue memory */
16347         if (!mq)
16348                 return -ENODEV;
16349         mbox = mempool_alloc(mq->phba->mbox_mem_pool, GFP_KERNEL);
16350         if (!mbox)
16351                 return -ENOMEM;
16352         length = (sizeof(struct lpfc_mbx_mq_destroy) -
16353                   sizeof(struct lpfc_sli4_cfg_mhdr));
16354         lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
16355                          LPFC_MBOX_OPCODE_MQ_DESTROY,
16356                          length, LPFC_SLI4_MBX_EMBED);
16357         bf_set(lpfc_mbx_mq_destroy_q_id, &mbox->u.mqe.un.mq_destroy.u.request,
16358                mq->queue_id);
16359         mbox->vport = mq->phba->pport;
16360         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
16361         rc = lpfc_sli_issue_mbox(mq->phba, mbox, MBX_POLL);
16362         /* The IOCTL status is embedded in the mailbox subheader. */
16363         shdr = (union lpfc_sli4_cfg_shdr *)
16364                 &mbox->u.mqe.un.mq_destroy.header.cfg_shdr;
16365         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
16366         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
16367         if (shdr_status || shdr_add_status || rc) {
16368                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
16369                                 "2507 MQ_DESTROY mailbox failed with "
16370                                 "status x%x add_status x%x, mbx status x%x\n",
16371                                 shdr_status, shdr_add_status, rc);
16372                 status = -ENXIO;
16373         }
16374         /* Remove mq from any list */
16375         list_del_init(&mq->list);
16376         mempool_free(mbox, mq->phba->mbox_mem_pool);
16377         return status;
16378 }
16379 
16380 /**
16381  * lpfc_wq_destroy - Destroy a Work Queue on the HBA
16382  * @wq: The queue structure associated with the queue to destroy.
16383  *
16384  * This function destroys a queue, as detailed in @wq by sending an mailbox
16385  * command, specific to the type of queue, to the HBA.
16386  *
16387  * The @wq struct is used to get the queue ID of the queue to destroy.
16388  *
16389  * On success this function will return a zero. If the queue destroy mailbox
16390  * command fails this function will return -ENXIO.
16391  **/
16392 int
16393 lpfc_wq_destroy(struct lpfc_hba *phba, struct lpfc_queue *wq)
16394 {
16395         LPFC_MBOXQ_t *mbox;
16396         int rc, length, status = 0;
16397         uint32_t shdr_status, shdr_add_status;
16398         union lpfc_sli4_cfg_shdr *shdr;
16399 
16400         /* sanity check on queue memory */
16401         if (!wq)
16402                 return -ENODEV;
16403         mbox = mempool_alloc(wq->phba->mbox_mem_pool, GFP_KERNEL);
16404         if (!mbox)
16405                 return -ENOMEM;
16406         length = (sizeof(struct lpfc_mbx_wq_destroy) -
16407                   sizeof(struct lpfc_sli4_cfg_mhdr));
16408         lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
16409                          LPFC_MBOX_OPCODE_FCOE_WQ_DESTROY,
16410                          length, LPFC_SLI4_MBX_EMBED);
16411         bf_set(lpfc_mbx_wq_destroy_q_id, &mbox->u.mqe.un.wq_destroy.u.request,
16412                wq->queue_id);
16413         mbox->vport = wq->phba->pport;
16414         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
16415         rc = lpfc_sli_issue_mbox(wq->phba, mbox, MBX_POLL);
16416         shdr = (union lpfc_sli4_cfg_shdr *)
16417                 &mbox->u.mqe.un.wq_destroy.header.cfg_shdr;
16418         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
16419         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
16420         if (shdr_status || shdr_add_status || rc) {
16421                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
16422                                 "2508 WQ_DESTROY mailbox failed with "
16423                                 "status x%x add_status x%x, mbx status x%x\n",
16424                                 shdr_status, shdr_add_status, rc);
16425                 status = -ENXIO;
16426         }
16427         /* Remove wq from any list */
16428         list_del_init(&wq->list);
16429         kfree(wq->pring);
16430         wq->pring = NULL;
16431         mempool_free(mbox, wq->phba->mbox_mem_pool);
16432         return status;
16433 }
16434 
16435 /**
16436  * lpfc_rq_destroy - Destroy a Receive Queue on the HBA
16437  * @rq: The queue structure associated with the queue to destroy.
16438  *
16439  * This function destroys a queue, as detailed in @rq by sending an mailbox
16440  * command, specific to the type of queue, to the HBA.
16441  *
16442  * The @rq struct is used to get the queue ID of the queue to destroy.
16443  *
16444  * On success this function will return a zero. If the queue destroy mailbox
16445  * command fails this function will return -ENXIO.
16446  **/
16447 int
16448 lpfc_rq_destroy(struct lpfc_hba *phba, struct lpfc_queue *hrq,
16449                 struct lpfc_queue *drq)
16450 {
16451         LPFC_MBOXQ_t *mbox;
16452         int rc, length, status = 0;
16453         uint32_t shdr_status, shdr_add_status;
16454         union lpfc_sli4_cfg_shdr *shdr;
16455 
16456         /* sanity check on queue memory */
16457         if (!hrq || !drq)
16458                 return -ENODEV;
16459         mbox = mempool_alloc(hrq->phba->mbox_mem_pool, GFP_KERNEL);
16460         if (!mbox)
16461                 return -ENOMEM;
16462         length = (sizeof(struct lpfc_mbx_rq_destroy) -
16463                   sizeof(struct lpfc_sli4_cfg_mhdr));
16464         lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
16465                          LPFC_MBOX_OPCODE_FCOE_RQ_DESTROY,
16466                          length, LPFC_SLI4_MBX_EMBED);
16467         bf_set(lpfc_mbx_rq_destroy_q_id, &mbox->u.mqe.un.rq_destroy.u.request,
16468                hrq->queue_id);
16469         mbox->vport = hrq->phba->pport;
16470         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
16471         rc = lpfc_sli_issue_mbox(hrq->phba, mbox, MBX_POLL);
16472         /* The IOCTL status is embedded in the mailbox subheader. */
16473         shdr = (union lpfc_sli4_cfg_shdr *)
16474                 &mbox->u.mqe.un.rq_destroy.header.cfg_shdr;
16475         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
16476         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
16477         if (shdr_status || shdr_add_status || rc) {
16478                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
16479                                 "2509 RQ_DESTROY mailbox failed with "
16480                                 "status x%x add_status x%x, mbx status x%x\n",
16481                                 shdr_status, shdr_add_status, rc);
16482                 if (rc != MBX_TIMEOUT)
16483                         mempool_free(mbox, hrq->phba->mbox_mem_pool);
16484                 return -ENXIO;
16485         }
16486         bf_set(lpfc_mbx_rq_destroy_q_id, &mbox->u.mqe.un.rq_destroy.u.request,
16487                drq->queue_id);
16488         rc = lpfc_sli_issue_mbox(drq->phba, mbox, MBX_POLL);
16489         shdr = (union lpfc_sli4_cfg_shdr *)
16490                 &mbox->u.mqe.un.rq_destroy.header.cfg_shdr;
16491         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
16492         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
16493         if (shdr_status || shdr_add_status || rc) {
16494                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
16495                                 "2510 RQ_DESTROY mailbox failed with "
16496                                 "status x%x add_status x%x, mbx status x%x\n",
16497                                 shdr_status, shdr_add_status, rc);
16498                 status = -ENXIO;
16499         }
16500         list_del_init(&hrq->list);
16501         list_del_init(&drq->list);
16502         mempool_free(mbox, hrq->phba->mbox_mem_pool);
16503         return status;
16504 }
16505 
16506 /**
16507  * lpfc_sli4_post_sgl - Post scatter gather list for an XRI to HBA
16508  * @phba: The virtual port for which this call being executed.
16509  * @pdma_phys_addr0: Physical address of the 1st SGL page.
16510  * @pdma_phys_addr1: Physical address of the 2nd SGL page.
16511  * @xritag: the xritag that ties this io to the SGL pages.
16512  *
16513  * This routine will post the sgl pages for the IO that has the xritag
16514  * that is in the iocbq structure. The xritag is assigned during iocbq
16515  * creation and persists for as long as the driver is loaded.
16516  * if the caller has fewer than 256 scatter gather segments to map then
16517  * pdma_phys_addr1 should be 0.
16518  * If the caller needs to map more than 256 scatter gather segment then
16519  * pdma_phys_addr1 should be a valid physical address.
16520  * physical address for SGLs must be 64 byte aligned.
16521  * If you are going to map 2 SGL's then the first one must have 256 entries
16522  * the second sgl can have between 1 and 256 entries.
16523  *
16524  * Return codes:
16525  *      0 - Success
16526  *      -ENXIO, -ENOMEM - Failure
16527  **/
16528 int
16529 lpfc_sli4_post_sgl(struct lpfc_hba *phba,
16530                 dma_addr_t pdma_phys_addr0,
16531                 dma_addr_t pdma_phys_addr1,
16532                 uint16_t xritag)
16533 {
16534         struct lpfc_mbx_post_sgl_pages *post_sgl_pages;
16535         LPFC_MBOXQ_t *mbox;
16536         int rc;
16537         uint32_t shdr_status, shdr_add_status;
16538         uint32_t mbox_tmo;
16539         union lpfc_sli4_cfg_shdr *shdr;
16540 
16541         if (xritag == NO_XRI) {
16542                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
16543                                 "0364 Invalid param:\n");
16544                 return -EINVAL;
16545         }
16546 
16547         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
16548         if (!mbox)
16549                 return -ENOMEM;
16550 
16551         lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
16552                         LPFC_MBOX_OPCODE_FCOE_POST_SGL_PAGES,
16553                         sizeof(struct lpfc_mbx_post_sgl_pages) -
16554                         sizeof(struct lpfc_sli4_cfg_mhdr), LPFC_SLI4_MBX_EMBED);
16555 
16556         post_sgl_pages = (struct lpfc_mbx_post_sgl_pages *)
16557                                 &mbox->u.mqe.un.post_sgl_pages;
16558         bf_set(lpfc_post_sgl_pages_xri, post_sgl_pages, xritag);
16559         bf_set(lpfc_post_sgl_pages_xricnt, post_sgl_pages, 1);
16560 
16561         post_sgl_pages->sgl_pg_pairs[0].sgl_pg0_addr_lo =
16562                                 cpu_to_le32(putPaddrLow(pdma_phys_addr0));
16563         post_sgl_pages->sgl_pg_pairs[0].sgl_pg0_addr_hi =
16564                                 cpu_to_le32(putPaddrHigh(pdma_phys_addr0));
16565 
16566         post_sgl_pages->sgl_pg_pairs[0].sgl_pg1_addr_lo =
16567                                 cpu_to_le32(putPaddrLow(pdma_phys_addr1));
16568         post_sgl_pages->sgl_pg_pairs[0].sgl_pg1_addr_hi =
16569                                 cpu_to_le32(putPaddrHigh(pdma_phys_addr1));
16570         if (!phba->sli4_hba.intr_enable)
16571                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
16572         else {
16573                 mbox_tmo = lpfc_mbox_tmo_val(phba, mbox);
16574                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo);
16575         }
16576         /* The IOCTL status is embedded in the mailbox subheader. */
16577         shdr = (union lpfc_sli4_cfg_shdr *) &post_sgl_pages->header.cfg_shdr;
16578         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
16579         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
16580         if (rc != MBX_TIMEOUT)
16581                 mempool_free(mbox, phba->mbox_mem_pool);
16582         if (shdr_status || shdr_add_status || rc) {
16583                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
16584                                 "2511 POST_SGL mailbox failed with "
16585                                 "status x%x add_status x%x, mbx status x%x\n",
16586                                 shdr_status, shdr_add_status, rc);
16587         }
16588         return 0;
16589 }
16590 
16591 /**
16592  * lpfc_sli4_alloc_xri - Get an available rpi in the device's range
16593  * @phba: pointer to lpfc hba data structure.
16594  *
16595  * This routine is invoked to post rpi header templates to the
16596  * HBA consistent with the SLI-4 interface spec.  This routine
16597  * posts a SLI4_PAGE_SIZE memory region to the port to hold up to
16598  * SLI4_PAGE_SIZE modulo 64 rpi context headers.
16599  *
16600  * Returns
16601  *      A nonzero rpi defined as rpi_base <= rpi < max_rpi if successful
16602  *      LPFC_RPI_ALLOC_ERROR if no rpis are available.
16603  **/
16604 static uint16_t
16605 lpfc_sli4_alloc_xri(struct lpfc_hba *phba)
16606 {
16607         unsigned long xri;
16608 
16609         /*
16610          * Fetch the next logical xri.  Because this index is logical,
16611          * the driver starts at 0 each time.
16612          */
16613         spin_lock_irq(&phba->hbalock);
16614         xri = find_next_zero_bit(phba->sli4_hba.xri_bmask,
16615                                  phba->sli4_hba.max_cfg_param.max_xri, 0);
16616         if (xri >= phba->sli4_hba.max_cfg_param.max_xri) {
16617                 spin_unlock_irq(&phba->hbalock);
16618                 return NO_XRI;
16619         } else {
16620                 set_bit(xri, phba->sli4_hba.xri_bmask);
16621                 phba->sli4_hba.max_cfg_param.xri_used++;
16622         }
16623         spin_unlock_irq(&phba->hbalock);
16624         return xri;
16625 }
16626 
16627 /**
16628  * lpfc_sli4_free_xri - Release an xri for reuse.
16629  * @phba: pointer to lpfc hba data structure.
16630  *
16631  * This routine is invoked to release an xri to the pool of
16632  * available rpis maintained by the driver.
16633  **/
16634 static void
16635 __lpfc_sli4_free_xri(struct lpfc_hba *phba, int xri)
16636 {
16637         if (test_and_clear_bit(xri, phba->sli4_hba.xri_bmask)) {
16638                 phba->sli4_hba.max_cfg_param.xri_used--;
16639         }
16640 }
16641 
16642 /**
16643  * lpfc_sli4_free_xri - Release an xri for reuse.
16644  * @phba: pointer to lpfc hba data structure.
16645  *
16646  * This routine is invoked to release an xri to the pool of
16647  * available rpis maintained by the driver.
16648  **/
16649 void
16650 lpfc_sli4_free_xri(struct lpfc_hba *phba, int xri)
16651 {
16652         spin_lock_irq(&phba->hbalock);
16653         __lpfc_sli4_free_xri(phba, xri);
16654         spin_unlock_irq(&phba->hbalock);
16655 }
16656 
16657 /**
16658  * lpfc_sli4_next_xritag - Get an xritag for the io
16659  * @phba: Pointer to HBA context object.
16660  *
16661  * This function gets an xritag for the iocb. If there is no unused xritag
16662  * it will return 0xffff.
16663  * The function returns the allocated xritag if successful, else returns zero.
16664  * Zero is not a valid xritag.
16665  * The caller is not required to hold any lock.
16666  **/
16667 uint16_t
16668 lpfc_sli4_next_xritag(struct lpfc_hba *phba)
16669 {
16670         uint16_t xri_index;
16671 
16672         xri_index = lpfc_sli4_alloc_xri(phba);
16673         if (xri_index == NO_XRI)
16674                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
16675                                 "2004 Failed to allocate XRI.last XRITAG is %d"
16676                                 " Max XRI is %d, Used XRI is %d\n",
16677                                 xri_index,
16678                                 phba->sli4_hba.max_cfg_param.max_xri,
16679                                 phba->sli4_hba.max_cfg_param.xri_used);
16680         return xri_index;
16681 }
16682 
16683 /**
16684  * lpfc_sli4_post_sgl_list - post a block of ELS sgls to the port.
16685  * @phba: pointer to lpfc hba data structure.
16686  * @post_sgl_list: pointer to els sgl entry list.
16687  * @count: number of els sgl entries on the list.
16688  *
16689  * This routine is invoked to post a block of driver's sgl pages to the
16690  * HBA using non-embedded mailbox command. No Lock is held. This routine
16691  * is only called when the driver is loading and after all IO has been
16692  * stopped.
16693  **/
16694 static int
16695 lpfc_sli4_post_sgl_list(struct lpfc_hba *phba,
16696                             struct list_head *post_sgl_list,
16697                             int post_cnt)
16698 {
16699         struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
16700         struct lpfc_mbx_post_uembed_sgl_page1 *sgl;
16701         struct sgl_page_pairs *sgl_pg_pairs;
16702         void *viraddr;
16703         LPFC_MBOXQ_t *mbox;
16704         uint32_t reqlen, alloclen, pg_pairs;
16705         uint32_t mbox_tmo;
16706         uint16_t xritag_start = 0;
16707         int rc = 0;
16708         uint32_t shdr_status, shdr_add_status;
16709         union lpfc_sli4_cfg_shdr *shdr;
16710 
16711         reqlen = post_cnt * sizeof(struct sgl_page_pairs) +
16712                  sizeof(union lpfc_sli4_cfg_shdr) + sizeof(uint32_t);
16713         if (reqlen > SLI4_PAGE_SIZE) {
16714                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
16715                                 "2559 Block sgl registration required DMA "
16716                                 "size (%d) great than a page\n", reqlen);
16717                 return -ENOMEM;
16718         }
16719 
16720         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
16721         if (!mbox)
16722                 return -ENOMEM;
16723 
16724         /* Allocate DMA memory and set up the non-embedded mailbox command */
16725         alloclen = lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
16726                          LPFC_MBOX_OPCODE_FCOE_POST_SGL_PAGES, reqlen,
16727                          LPFC_SLI4_MBX_NEMBED);
16728 
16729         if (alloclen < reqlen) {
16730                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
16731                                 "0285 Allocated DMA memory size (%d) is "
16732                                 "less than the requested DMA memory "
16733                                 "size (%d)\n", alloclen, reqlen);
16734                 lpfc_sli4_mbox_cmd_free(phba, mbox);
16735                 return -ENOMEM;
16736         }
16737         /* Set up the SGL pages in the non-embedded DMA pages */
16738         viraddr = mbox->sge_array->addr[0];
16739         sgl = (struct lpfc_mbx_post_uembed_sgl_page1 *)viraddr;
16740         sgl_pg_pairs = &sgl->sgl_pg_pairs;
16741 
16742         pg_pairs = 0;
16743         list_for_each_entry_safe(sglq_entry, sglq_next, post_sgl_list, list) {
16744                 /* Set up the sge entry */
16745                 sgl_pg_pairs->sgl_pg0_addr_lo =
16746                                 cpu_to_le32(putPaddrLow(sglq_entry->phys));
16747                 sgl_pg_pairs->sgl_pg0_addr_hi =
16748                                 cpu_to_le32(putPaddrHigh(sglq_entry->phys));
16749                 sgl_pg_pairs->sgl_pg1_addr_lo =
16750                                 cpu_to_le32(putPaddrLow(0));
16751                 sgl_pg_pairs->sgl_pg1_addr_hi =
16752                                 cpu_to_le32(putPaddrHigh(0));
16753 
16754                 /* Keep the first xritag on the list */
16755                 if (pg_pairs == 0)
16756                         xritag_start = sglq_entry->sli4_xritag;
16757                 sgl_pg_pairs++;
16758                 pg_pairs++;
16759         }
16760 
16761         /* Complete initialization and perform endian conversion. */
16762         bf_set(lpfc_post_sgl_pages_xri, sgl, xritag_start);
16763         bf_set(lpfc_post_sgl_pages_xricnt, sgl, post_cnt);
16764         sgl->word0 = cpu_to_le32(sgl->word0);
16765 
16766         if (!phba->sli4_hba.intr_enable)
16767                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
16768         else {
16769                 mbox_tmo = lpfc_mbox_tmo_val(phba, mbox);
16770                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo);
16771         }
16772         shdr = (union lpfc_sli4_cfg_shdr *) &sgl->cfg_shdr;
16773         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
16774         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
16775         if (rc != MBX_TIMEOUT)
16776                 lpfc_sli4_mbox_cmd_free(phba, mbox);
16777         if (shdr_status || shdr_add_status || rc) {
16778                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
16779                                 "2513 POST_SGL_BLOCK mailbox command failed "
16780                                 "status x%x add_status x%x mbx status x%x\n",
16781                                 shdr_status, shdr_add_status, rc);
16782                 rc = -ENXIO;
16783         }
16784         return rc;
16785 }
16786 
16787 /**
16788  * lpfc_sli4_post_io_sgl_block - post a block of nvme sgl list to firmware
16789  * @phba: pointer to lpfc hba data structure.
16790  * @nblist: pointer to nvme buffer list.
16791  * @count: number of scsi buffers on the list.
16792  *
16793  * This routine is invoked to post a block of @count scsi sgl pages from a
16794  * SCSI buffer list @nblist to the HBA using non-embedded mailbox command.
16795  * No Lock is held.
16796  *
16797  **/
16798 static int
16799 lpfc_sli4_post_io_sgl_block(struct lpfc_hba *phba, struct list_head *nblist,
16800                             int count)
16801 {
16802         struct lpfc_io_buf *lpfc_ncmd;
16803         struct lpfc_mbx_post_uembed_sgl_page1 *sgl;
16804         struct sgl_page_pairs *sgl_pg_pairs;
16805         void *viraddr;
16806         LPFC_MBOXQ_t *mbox;
16807         uint32_t reqlen, alloclen, pg_pairs;
16808         uint32_t mbox_tmo;
16809         uint16_t xritag_start = 0;
16810         int rc = 0;
16811         uint32_t shdr_status, shdr_add_status;
16812         dma_addr_t pdma_phys_bpl1;
16813         union lpfc_sli4_cfg_shdr *shdr;
16814 
16815         /* Calculate the requested length of the dma memory */
16816         reqlen = count * sizeof(struct sgl_page_pairs) +
16817                  sizeof(union lpfc_sli4_cfg_shdr) + sizeof(uint32_t);
16818         if (reqlen > SLI4_PAGE_SIZE) {
16819                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
16820                                 "6118 Block sgl registration required DMA "
16821                                 "size (%d) great than a page\n", reqlen);
16822                 return -ENOMEM;
16823         }
16824         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
16825         if (!mbox) {
16826                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
16827                                 "6119 Failed to allocate mbox cmd memory\n");
16828                 return -ENOMEM;
16829         }
16830 
16831         /* Allocate DMA memory and set up the non-embedded mailbox command */
16832         alloclen = lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
16833                                     LPFC_MBOX_OPCODE_FCOE_POST_SGL_PAGES,
16834                                     reqlen, LPFC_SLI4_MBX_NEMBED);
16835 
16836         if (alloclen < reqlen) {
16837                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
16838                                 "6120 Allocated DMA memory size (%d) is "
16839                                 "less than the requested DMA memory "
16840                                 "size (%d)\n", alloclen, reqlen);
16841                 lpfc_sli4_mbox_cmd_free(phba, mbox);
16842                 return -ENOMEM;
16843         }
16844 
16845         /* Get the first SGE entry from the non-embedded DMA memory */
16846         viraddr = mbox->sge_array->addr[0];
16847 
16848         /* Set up the SGL pages in the non-embedded DMA pages */
16849         sgl = (struct lpfc_mbx_post_uembed_sgl_page1 *)viraddr;
16850         sgl_pg_pairs = &sgl->sgl_pg_pairs;
16851 
16852         pg_pairs = 0;
16853         list_for_each_entry(lpfc_ncmd, nblist, list) {
16854                 /* Set up the sge entry */
16855                 sgl_pg_pairs->sgl_pg0_addr_lo =
16856                         cpu_to_le32(putPaddrLow(lpfc_ncmd->dma_phys_sgl));
16857                 sgl_pg_pairs->sgl_pg0_addr_hi =
16858                         cpu_to_le32(putPaddrHigh(lpfc_ncmd->dma_phys_sgl));
16859                 if (phba->cfg_sg_dma_buf_size > SGL_PAGE_SIZE)
16860                         pdma_phys_bpl1 = lpfc_ncmd->dma_phys_sgl +
16861                                                 SGL_PAGE_SIZE;
16862                 else
16863                         pdma_phys_bpl1 = 0;
16864                 sgl_pg_pairs->sgl_pg1_addr_lo =
16865                         cpu_to_le32(putPaddrLow(pdma_phys_bpl1));
16866                 sgl_pg_pairs->sgl_pg1_addr_hi =
16867                         cpu_to_le32(putPaddrHigh(pdma_phys_bpl1));
16868                 /* Keep the first xritag on the list */
16869                 if (pg_pairs == 0)
16870                         xritag_start = lpfc_ncmd->cur_iocbq.sli4_xritag;
16871                 sgl_pg_pairs++;
16872                 pg_pairs++;
16873         }
16874         bf_set(lpfc_post_sgl_pages_xri, sgl, xritag_start);
16875         bf_set(lpfc_post_sgl_pages_xricnt, sgl, pg_pairs);
16876         /* Perform endian conversion if necessary */
16877         sgl->word0 = cpu_to_le32(sgl->word0);
16878 
16879         if (!phba->sli4_hba.intr_enable) {
16880                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
16881         } else {
16882                 mbox_tmo = lpfc_mbox_tmo_val(phba, mbox);
16883                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo);
16884         }
16885         shdr = (union lpfc_sli4_cfg_shdr *)&sgl->cfg_shdr;
16886         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
16887         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
16888         if (rc != MBX_TIMEOUT)
16889                 lpfc_sli4_mbox_cmd_free(phba, mbox);
16890         if (shdr_status || shdr_add_status || rc) {
16891                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
16892                                 "6125 POST_SGL_BLOCK mailbox command failed "
16893                                 "status x%x add_status x%x mbx status x%x\n",
16894                                 shdr_status, shdr_add_status, rc);
16895                 rc = -ENXIO;
16896         }
16897         return rc;
16898 }
16899 
16900 /**
16901  * lpfc_sli4_post_io_sgl_list - Post blocks of nvme buffer sgls from a list
16902  * @phba: pointer to lpfc hba data structure.
16903  * @post_nblist: pointer to the nvme buffer list.
16904  *
16905  * This routine walks a list of nvme buffers that was passed in. It attempts
16906  * to construct blocks of nvme buffer sgls which contains contiguous xris and
16907  * uses the non-embedded SGL block post mailbox commands to post to the port.
16908  * For single NVME buffer sgl with non-contiguous xri, if any, it shall use
16909  * embedded SGL post mailbox command for posting. The @post_nblist passed in
16910  * must be local list, thus no lock is needed when manipulate the list.
16911  *
16912  * Returns: 0 = failure, non-zero number of successfully posted buffers.
16913  **/
16914 int
16915 lpfc_sli4_post_io_sgl_list(struct lpfc_hba *phba,
16916                            struct list_head *post_nblist, int sb_count)
16917 {
16918         struct lpfc_io_buf *lpfc_ncmd, *lpfc_ncmd_next;
16919         int status, sgl_size;
16920         int post_cnt = 0, block_cnt = 0, num_posting = 0, num_posted = 0;
16921         dma_addr_t pdma_phys_sgl1;
16922         int last_xritag = NO_XRI;
16923         int cur_xritag;
16924         LIST_HEAD(prep_nblist);
16925         LIST_HEAD(blck_nblist);
16926         LIST_HEAD(nvme_nblist);
16927 
16928         /* sanity check */
16929         if (sb_count <= 0)
16930                 return -EINVAL;
16931 
16932         sgl_size = phba->cfg_sg_dma_buf_size;
16933         list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next, post_nblist, list) {
16934                 list_del_init(&lpfc_ncmd->list);
16935                 block_cnt++;
16936                 if ((last_xritag != NO_XRI) &&
16937                     (lpfc_ncmd->cur_iocbq.sli4_xritag != last_xritag + 1)) {
16938                         /* a hole in xri block, form a sgl posting block */
16939                         list_splice_init(&prep_nblist, &blck_nblist);
16940                         post_cnt = block_cnt - 1;
16941                         /* prepare list for next posting block */
16942                         list_add_tail(&lpfc_ncmd->list, &prep_nblist);
16943                         block_cnt = 1;
16944                 } else {
16945                         /* prepare list for next posting block */
16946                         list_add_tail(&lpfc_ncmd->list, &prep_nblist);
16947                         /* enough sgls for non-embed sgl mbox command */
16948                         if (block_cnt == LPFC_NEMBED_MBOX_SGL_CNT) {
16949                                 list_splice_init(&prep_nblist, &blck_nblist);
16950                                 post_cnt = block_cnt;
16951                                 block_cnt = 0;
16952                         }
16953                 }
16954                 num_posting++;
16955                 last_xritag = lpfc_ncmd->cur_iocbq.sli4_xritag;
16956 
16957                 /* end of repost sgl list condition for NVME buffers */
16958                 if (num_posting == sb_count) {
16959                         if (post_cnt == 0) {
16960                                 /* last sgl posting block */
16961                                 list_splice_init(&prep_nblist, &blck_nblist);
16962                                 post_cnt = block_cnt;
16963                         } else if (block_cnt == 1) {
16964                                 /* last single sgl with non-contiguous xri */
16965                                 if (sgl_size > SGL_PAGE_SIZE)
16966                                         pdma_phys_sgl1 =
16967                                                 lpfc_ncmd->dma_phys_sgl +
16968                                                 SGL_PAGE_SIZE;
16969                                 else
16970                                         pdma_phys_sgl1 = 0;
16971                                 cur_xritag = lpfc_ncmd->cur_iocbq.sli4_xritag;
16972                                 status = lpfc_sli4_post_sgl(
16973                                                 phba, lpfc_ncmd->dma_phys_sgl,
16974                                                 pdma_phys_sgl1, cur_xritag);
16975                                 if (status) {
16976                                         /* Post error.  Buffer unavailable. */
16977                                         lpfc_ncmd->flags |=
16978                                                 LPFC_SBUF_NOT_POSTED;
16979                                 } else {
16980                                         /* Post success. Bffer available. */
16981                                         lpfc_ncmd->flags &=
16982                                                 ~LPFC_SBUF_NOT_POSTED;
16983                                         lpfc_ncmd->status = IOSTAT_SUCCESS;
16984                                         num_posted++;
16985                                 }
16986                                 /* success, put on NVME buffer sgl list */
16987                                 list_add_tail(&lpfc_ncmd->list, &nvme_nblist);
16988                         }
16989                 }
16990 
16991                 /* continue until a nembed page worth of sgls */
16992                 if (post_cnt == 0)
16993                         continue;
16994 
16995                 /* post block of NVME buffer list sgls */
16996                 status = lpfc_sli4_post_io_sgl_block(phba, &blck_nblist,
16997                                                      post_cnt);
16998 
16999                 /* don't reset xirtag due to hole in xri block */
17000                 if (block_cnt == 0)
17001                         last_xritag = NO_XRI;
17002 
17003                 /* reset NVME buffer post count for next round of posting */
17004                 post_cnt = 0;
17005 
17006                 /* put posted NVME buffer-sgl posted on NVME buffer sgl list */
17007                 while (!list_empty(&blck_nblist)) {
17008                         list_remove_head(&blck_nblist, lpfc_ncmd,
17009                                          struct lpfc_io_buf, list);
17010                         if (status) {
17011                                 /* Post error.  Mark buffer unavailable. */
17012                                 lpfc_ncmd->flags |= LPFC_SBUF_NOT_POSTED;
17013                         } else {
17014                                 /* Post success, Mark buffer available. */
17015                                 lpfc_ncmd->flags &= ~LPFC_SBUF_NOT_POSTED;
17016                                 lpfc_ncmd->status = IOSTAT_SUCCESS;
17017                                 num_posted++;
17018                         }
17019                         list_add_tail(&lpfc_ncmd->list, &nvme_nblist);
17020                 }
17021         }
17022         /* Push NVME buffers with sgl posted to the available list */
17023         lpfc_io_buf_replenish(phba, &nvme_nblist);
17024 
17025         return num_posted;
17026 }
17027 
17028 /**
17029  * lpfc_fc_frame_check - Check that this frame is a valid frame to handle
17030  * @phba: pointer to lpfc_hba struct that the frame was received on
17031  * @fc_hdr: A pointer to the FC Header data (In Big Endian Format)
17032  *
17033  * This function checks the fields in the @fc_hdr to see if the FC frame is a
17034  * valid type of frame that the LPFC driver will handle. This function will
17035  * return a zero if the frame is a valid frame or a non zero value when the
17036  * frame does not pass the check.
17037  **/
17038 static int
17039 lpfc_fc_frame_check(struct lpfc_hba *phba, struct fc_frame_header *fc_hdr)
17040 {
17041         /*  make rctl_names static to save stack space */
17042         struct fc_vft_header *fc_vft_hdr;
17043         uint32_t *header = (uint32_t *) fc_hdr;
17044 
17045 #define FC_RCTL_MDS_DIAGS       0xF4
17046 
17047         switch (fc_hdr->fh_r_ctl) {
17048         case FC_RCTL_DD_UNCAT:          /* uncategorized information */
17049         case FC_RCTL_DD_SOL_DATA:       /* solicited data */
17050         case FC_RCTL_DD_UNSOL_CTL:      /* unsolicited control */
17051         case FC_RCTL_DD_SOL_CTL:        /* solicited control or reply */
17052         case FC_RCTL_DD_UNSOL_DATA:     /* unsolicited data */
17053         case FC_RCTL_DD_DATA_DESC:      /* data descriptor */
17054         case FC_RCTL_DD_UNSOL_CMD:      /* unsolicited command */
17055         case FC_RCTL_DD_CMD_STATUS:     /* command status */
17056         case FC_RCTL_ELS_REQ:   /* extended link services request */
17057         case FC_RCTL_ELS_REP:   /* extended link services reply */
17058         case FC_RCTL_ELS4_REQ:  /* FC-4 ELS request */
17059         case FC_RCTL_ELS4_REP:  /* FC-4 ELS reply */
17060         case FC_RCTL_BA_NOP:    /* basic link service NOP */
17061         case FC_RCTL_BA_ABTS:   /* basic link service abort */
17062         case FC_RCTL_BA_RMC:    /* remove connection */
17063         case FC_RCTL_BA_ACC:    /* basic accept */
17064         case FC_RCTL_BA_RJT:    /* basic reject */
17065         case FC_RCTL_BA_PRMT:
17066         case FC_RCTL_ACK_1:     /* acknowledge_1 */
17067         case FC_RCTL_ACK_0:     /* acknowledge_0 */
17068         case FC_RCTL_P_RJT:     /* port reject */
17069         case FC_RCTL_F_RJT:     /* fabric reject */
17070         case FC_RCTL_P_BSY:     /* port busy */
17071         case FC_RCTL_F_BSY:     /* fabric busy to data frame */
17072         case FC_RCTL_F_BSYL:    /* fabric busy to link control frame */
17073         case FC_RCTL_LCR:       /* link credit reset */
17074         case FC_RCTL_MDS_DIAGS: /* MDS Diagnostics */
17075         case FC_RCTL_END:       /* end */
17076                 break;
17077         case FC_RCTL_VFTH:      /* Virtual Fabric tagging Header */
17078                 fc_vft_hdr = (struct fc_vft_header *)fc_hdr;
17079                 fc_hdr = &((struct fc_frame_header *)fc_vft_hdr)[1];
17080                 return lpfc_fc_frame_check(phba, fc_hdr);
17081         default:
17082                 goto drop;
17083         }
17084 
17085         switch (fc_hdr->fh_type) {
17086         case FC_TYPE_BLS:
17087         case FC_TYPE_ELS:
17088         case FC_TYPE_FCP:
17089         case FC_TYPE_CT:
17090         case FC_TYPE_NVME:
17091                 break;
17092         case FC_TYPE_IP:
17093         case FC_TYPE_ILS:
17094         default:
17095                 goto drop;
17096         }
17097 
17098         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
17099                         "2538 Received frame rctl:x%x, type:x%x, "
17100                         "frame Data:%08x %08x %08x %08x %08x %08x %08x\n",
17101                         fc_hdr->fh_r_ctl, fc_hdr->fh_type,
17102                         be32_to_cpu(header[0]), be32_to_cpu(header[1]),
17103                         be32_to_cpu(header[2]), be32_to_cpu(header[3]),
17104                         be32_to_cpu(header[4]), be32_to_cpu(header[5]),
17105                         be32_to_cpu(header[6]));
17106         return 0;
17107 drop:
17108         lpfc_printf_log(phba, KERN_WARNING, LOG_ELS,
17109                         "2539 Dropped frame rctl:x%x type:x%x\n",
17110                         fc_hdr->fh_r_ctl, fc_hdr->fh_type);
17111         return 1;
17112 }
17113 
17114 /**
17115  * lpfc_fc_hdr_get_vfi - Get the VFI from an FC frame
17116  * @fc_hdr: A pointer to the FC Header data (In Big Endian Format)
17117  *
17118  * This function processes the FC header to retrieve the VFI from the VF
17119  * header, if one exists. This function will return the VFI if one exists
17120  * or 0 if no VSAN Header exists.
17121  **/
17122 static uint32_t
17123 lpfc_fc_hdr_get_vfi(struct fc_frame_header *fc_hdr)
17124 {
17125         struct fc_vft_header *fc_vft_hdr = (struct fc_vft_header *)fc_hdr;
17126 
17127         if (fc_hdr->fh_r_ctl != FC_RCTL_VFTH)
17128                 return 0;
17129         return bf_get(fc_vft_hdr_vf_id, fc_vft_hdr);
17130 }
17131 
17132 /**
17133  * lpfc_fc_frame_to_vport - Finds the vport that a frame is destined to
17134  * @phba: Pointer to the HBA structure to search for the vport on
17135  * @fc_hdr: A pointer to the FC Header data (In Big Endian Format)
17136  * @fcfi: The FC Fabric ID that the frame came from
17137  *
17138  * This function searches the @phba for a vport that matches the content of the
17139  * @fc_hdr passed in and the @fcfi. This function uses the @fc_hdr to fetch the
17140  * VFI, if the Virtual Fabric Tagging Header exists, and the DID. This function
17141  * returns the matching vport pointer or NULL if unable to match frame to a
17142  * vport.
17143  **/
17144 static struct lpfc_vport *
17145 lpfc_fc_frame_to_vport(struct lpfc_hba *phba, struct fc_frame_header *fc_hdr,
17146                        uint16_t fcfi, uint32_t did)
17147 {
17148         struct lpfc_vport **vports;
17149         struct lpfc_vport *vport = NULL;
17150         int i;
17151 
17152         if (did == Fabric_DID)
17153                 return phba->pport;
17154         if ((phba->pport->fc_flag & FC_PT2PT) &&
17155                 !(phba->link_state == LPFC_HBA_READY))
17156                 return phba->pport;
17157 
17158         vports = lpfc_create_vport_work_array(phba);
17159         if (vports != NULL) {
17160                 for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
17161                         if (phba->fcf.fcfi == fcfi &&
17162                             vports[i]->vfi == lpfc_fc_hdr_get_vfi(fc_hdr) &&
17163                             vports[i]->fc_myDID == did) {
17164                                 vport = vports[i];
17165                                 break;
17166                         }
17167                 }
17168         }
17169         lpfc_destroy_vport_work_array(phba, vports);
17170         return vport;
17171 }
17172 
17173 /**
17174  * lpfc_update_rcv_time_stamp - Update vport's rcv seq time stamp
17175  * @vport: The vport to work on.
17176  *
17177  * This function updates the receive sequence time stamp for this vport. The
17178  * receive sequence time stamp indicates the time that the last frame of the
17179  * the sequence that has been idle for the longest amount of time was received.
17180  * the driver uses this time stamp to indicate if any received sequences have
17181  * timed out.
17182  **/
17183 static void
17184 lpfc_update_rcv_time_stamp(struct lpfc_vport *vport)
17185 {
17186         struct lpfc_dmabuf *h_buf;
17187         struct hbq_dmabuf *dmabuf = NULL;
17188 
17189         /* get the oldest sequence on the rcv list */
17190         h_buf = list_get_first(&vport->rcv_buffer_list,
17191                                struct lpfc_dmabuf, list);
17192         if (!h_buf)
17193                 return;
17194         dmabuf = container_of(h_buf, struct hbq_dmabuf, hbuf);
17195         vport->rcv_buffer_time_stamp = dmabuf->time_stamp;
17196 }
17197 
17198 /**
17199  * lpfc_cleanup_rcv_buffers - Cleans up all outstanding receive sequences.
17200  * @vport: The vport that the received sequences were sent to.
17201  *
17202  * This function cleans up all outstanding received sequences. This is called
17203  * by the driver when a link event or user action invalidates all the received
17204  * sequences.
17205  **/
17206 void
17207 lpfc_cleanup_rcv_buffers(struct lpfc_vport *vport)
17208 {
17209         struct lpfc_dmabuf *h_buf, *hnext;
17210         struct lpfc_dmabuf *d_buf, *dnext;
17211         struct hbq_dmabuf *dmabuf = NULL;
17212 
17213         /* start with the oldest sequence on the rcv list */
17214         list_for_each_entry_safe(h_buf, hnext, &vport->rcv_buffer_list, list) {
17215                 dmabuf = container_of(h_buf, struct hbq_dmabuf, hbuf);
17216                 list_del_init(&dmabuf->hbuf.list);
17217                 list_for_each_entry_safe(d_buf, dnext,
17218                                          &dmabuf->dbuf.list, list) {
17219                         list_del_init(&d_buf->list);
17220                         lpfc_in_buf_free(vport->phba, d_buf);
17221                 }
17222                 lpfc_in_buf_free(vport->phba, &dmabuf->dbuf);
17223         }
17224 }
17225 
17226 /**
17227  * lpfc_rcv_seq_check_edtov - Cleans up timed out receive sequences.
17228  * @vport: The vport that the received sequences were sent to.
17229  *
17230  * This function determines whether any received sequences have timed out by
17231  * first checking the vport's rcv_buffer_time_stamp. If this time_stamp
17232  * indicates that there is at least one timed out sequence this routine will
17233  * go through the received sequences one at a time from most inactive to most
17234  * active to determine which ones need to be cleaned up. Once it has determined
17235  * that a sequence needs to be cleaned up it will simply free up the resources
17236  * without sending an abort.
17237  **/
17238 void
17239 lpfc_rcv_seq_check_edtov(struct lpfc_vport *vport)
17240 {
17241         struct lpfc_dmabuf *h_buf, *hnext;
17242         struct lpfc_dmabuf *d_buf, *dnext;
17243         struct hbq_dmabuf *dmabuf = NULL;
17244         unsigned long timeout;
17245         int abort_count = 0;
17246 
17247         timeout = (msecs_to_jiffies(vport->phba->fc_edtov) +
17248                    vport->rcv_buffer_time_stamp);
17249         if (list_empty(&vport->rcv_buffer_list) ||
17250             time_before(jiffies, timeout))
17251                 return;
17252         /* start with the oldest sequence on the rcv list */
17253         list_for_each_entry_safe(h_buf, hnext, &vport->rcv_buffer_list, list) {
17254                 dmabuf = container_of(h_buf, struct hbq_dmabuf, hbuf);
17255                 timeout = (msecs_to_jiffies(vport->phba->fc_edtov) +
17256                            dmabuf->time_stamp);
17257                 if (time_before(jiffies, timeout))
17258                         break;
17259                 abort_count++;
17260                 list_del_init(&dmabuf->hbuf.list);
17261                 list_for_each_entry_safe(d_buf, dnext,
17262                                          &dmabuf->dbuf.list, list) {
17263                         list_del_init(&d_buf->list);
17264                         lpfc_in_buf_free(vport->phba, d_buf);
17265                 }
17266                 lpfc_in_buf_free(vport->phba, &dmabuf->dbuf);
17267         }
17268         if (abort_count)
17269                 lpfc_update_rcv_time_stamp(vport);
17270 }
17271 
17272 /**
17273  * lpfc_fc_frame_add - Adds a frame to the vport's list of received sequences
17274  * @dmabuf: pointer to a dmabuf that describes the hdr and data of the FC frame
17275  *
17276  * This function searches through the existing incomplete sequences that have
17277  * been sent to this @vport. If the frame matches one of the incomplete
17278  * sequences then the dbuf in the @dmabuf is added to the list of frames that
17279  * make up that sequence. If no sequence is found that matches this frame then
17280  * the function will add the hbuf in the @dmabuf to the @vport's rcv_buffer_list
17281  * This function returns a pointer to the first dmabuf in the sequence list that
17282  * the frame was linked to.
17283  **/
17284 static struct hbq_dmabuf *
17285 lpfc_fc_frame_add(struct lpfc_vport *vport, struct hbq_dmabuf *dmabuf)
17286 {
17287         struct fc_frame_header *new_hdr;
17288         struct fc_frame_header *temp_hdr;
17289         struct lpfc_dmabuf *d_buf;
17290         struct lpfc_dmabuf *h_buf;
17291         struct hbq_dmabuf *seq_dmabuf = NULL;
17292         struct hbq_dmabuf *temp_dmabuf = NULL;
17293         uint8_t found = 0;
17294 
17295         INIT_LIST_HEAD(&dmabuf->dbuf.list);
17296         dmabuf->time_stamp = jiffies;
17297         new_hdr = (struct fc_frame_header *)dmabuf->hbuf.virt;
17298 
17299         /* Use the hdr_buf to find the sequence that this frame belongs to */
17300         list_for_each_entry(h_buf, &vport->rcv_buffer_list, list) {
17301                 temp_hdr = (struct fc_frame_header *)h_buf->virt;
17302                 if ((temp_hdr->fh_seq_id != new_hdr->fh_seq_id) ||
17303                     (temp_hdr->fh_ox_id != new_hdr->fh_ox_id) ||
17304                     (memcmp(&temp_hdr->fh_s_id, &new_hdr->fh_s_id, 3)))
17305                         continue;
17306                 /* found a pending sequence that matches this frame */
17307                 seq_dmabuf = container_of(h_buf, struct hbq_dmabuf, hbuf);
17308                 break;
17309         }
17310         if (!seq_dmabuf) {
17311                 /*
17312                  * This indicates first frame received for this sequence.
17313                  * Queue the buffer on the vport's rcv_buffer_list.
17314                  */
17315                 list_add_tail(&dmabuf->hbuf.list, &vport->rcv_buffer_list);
17316                 lpfc_update_rcv_time_stamp(vport);
17317                 return dmabuf;
17318         }
17319         temp_hdr = seq_dmabuf->hbuf.virt;
17320         if (be16_to_cpu(new_hdr->fh_seq_cnt) <
17321                 be16_to_cpu(temp_hdr->fh_seq_cnt)) {
17322                 list_del_init(&seq_dmabuf->hbuf.list);
17323                 list_add_tail(&dmabuf->hbuf.list, &vport->rcv_buffer_list);
17324                 list_add_tail(&dmabuf->dbuf.list, &seq_dmabuf->dbuf.list);
17325                 lpfc_update_rcv_time_stamp(vport);
17326                 return dmabuf;
17327         }
17328         /* move this sequence to the tail to indicate a young sequence */
17329         list_move_tail(&seq_dmabuf->hbuf.list, &vport->rcv_buffer_list);
17330         seq_dmabuf->time_stamp = jiffies;
17331         lpfc_update_rcv_time_stamp(vport);
17332         if (list_empty(&seq_dmabuf->dbuf.list)) {
17333                 temp_hdr = dmabuf->hbuf.virt;
17334                 list_add_tail(&dmabuf->dbuf.list, &seq_dmabuf->dbuf.list);
17335                 return seq_dmabuf;
17336         }
17337         /* find the correct place in the sequence to insert this frame */
17338         d_buf = list_entry(seq_dmabuf->dbuf.list.prev, typeof(*d_buf), list);
17339         while (!found) {
17340                 temp_dmabuf = container_of(d_buf, struct hbq_dmabuf, dbuf);
17341                 temp_hdr = (struct fc_frame_header *)temp_dmabuf->hbuf.virt;
17342                 /*
17343                  * If the frame's sequence count is greater than the frame on
17344                  * the list then insert the frame right after this frame
17345                  */
17346                 if (be16_to_cpu(new_hdr->fh_seq_cnt) >
17347                         be16_to_cpu(temp_hdr->fh_seq_cnt)) {
17348                         list_add(&dmabuf->dbuf.list, &temp_dmabuf->dbuf.list);
17349                         found = 1;
17350                         break;
17351                 }
17352 
17353                 if (&d_buf->list == &seq_dmabuf->dbuf.list)
17354                         break;
17355                 d_buf = list_entry(d_buf->list.prev, typeof(*d_buf), list);
17356         }
17357 
17358         if (found)
17359                 return seq_dmabuf;
17360         return NULL;
17361 }
17362 
17363 /**
17364  * lpfc_sli4_abort_partial_seq - Abort partially assembled unsol sequence
17365  * @vport: pointer to a vitural port
17366  * @dmabuf: pointer to a dmabuf that describes the FC sequence
17367  *
17368  * This function tries to abort from the partially assembed sequence, described
17369  * by the information from basic abbort @dmabuf. It checks to see whether such
17370  * partially assembled sequence held by the driver. If so, it shall free up all
17371  * the frames from the partially assembled sequence.
17372  *
17373  * Return
17374  * true  -- if there is matching partially assembled sequence present and all
17375  *          the frames freed with the sequence;
17376  * false -- if there is no matching partially assembled sequence present so
17377  *          nothing got aborted in the lower layer driver
17378  **/
17379 static bool
17380 lpfc_sli4_abort_partial_seq(struct lpfc_vport *vport,
17381                             struct hbq_dmabuf *dmabuf)
17382 {
17383         struct fc_frame_header *new_hdr;
17384         struct fc_frame_header *temp_hdr;
17385         struct lpfc_dmabuf *d_buf, *n_buf, *h_buf;
17386         struct hbq_dmabuf *seq_dmabuf = NULL;
17387 
17388         /* Use the hdr_buf to find the sequence that matches this frame */
17389         INIT_LIST_HEAD(&dmabuf->dbuf.list);
17390         INIT_LIST_HEAD(&dmabuf->hbuf.list);
17391         new_hdr = (struct fc_frame_header *)dmabuf->hbuf.virt;
17392         list_for_each_entry(h_buf, &vport->rcv_buffer_list, list) {
17393                 temp_hdr = (struct fc_frame_header *)h_buf->virt;
17394                 if ((temp_hdr->fh_seq_id != new_hdr->fh_seq_id) ||
17395                     (temp_hdr->fh_ox_id != new_hdr->fh_ox_id) ||
17396                     (memcmp(&temp_hdr->fh_s_id, &new_hdr->fh_s_id, 3)))
17397                         continue;
17398                 /* found a pending sequence that matches this frame */
17399                 seq_dmabuf = container_of(h_buf, struct hbq_dmabuf, hbuf);
17400                 break;
17401         }
17402 
17403         /* Free up all the frames from the partially assembled sequence */
17404         if (seq_dmabuf) {
17405                 list_for_each_entry_safe(d_buf, n_buf,
17406                                          &seq_dmabuf->dbuf.list, list) {
17407                         list_del_init(&d_buf->list);
17408                         lpfc_in_buf_free(vport->phba, d_buf);
17409                 }
17410                 return true;
17411         }
17412         return false;
17413 }
17414 
17415 /**
17416  * lpfc_sli4_abort_ulp_seq - Abort assembled unsol sequence from ulp
17417  * @vport: pointer to a vitural port
17418  * @dmabuf: pointer to a dmabuf that describes the FC sequence
17419  *
17420  * This function tries to abort from the assembed sequence from upper level
17421  * protocol, described by the information from basic abbort @dmabuf. It
17422  * checks to see whether such pending context exists at upper level protocol.
17423  * If so, it shall clean up the pending context.
17424  *
17425  * Return
17426  * true  -- if there is matching pending context of the sequence cleaned
17427  *          at ulp;
17428  * false -- if there is no matching pending context of the sequence present
17429  *          at ulp.
17430  **/
17431 static bool
17432 lpfc_sli4_abort_ulp_seq(struct lpfc_vport *vport, struct hbq_dmabuf *dmabuf)
17433 {
17434         struct lpfc_hba *phba = vport->phba;
17435         int handled;
17436 
17437         /* Accepting abort at ulp with SLI4 only */
17438         if (phba->sli_rev < LPFC_SLI_REV4)
17439                 return false;
17440 
17441         /* Register all caring upper level protocols to attend abort */
17442         handled = lpfc_ct_handle_unsol_abort(phba, dmabuf);
17443         if (handled)
17444                 return true;
17445 
17446         return false;
17447 }
17448 
17449 /**
17450  * lpfc_sli4_seq_abort_rsp_cmpl - BLS ABORT RSP seq abort iocb complete handler
17451  * @phba: Pointer to HBA context object.
17452  * @cmd_iocbq: pointer to the command iocbq structure.
17453  * @rsp_iocbq: pointer to the response iocbq structure.
17454  *
17455  * This function handles the sequence abort response iocb command complete
17456  * event. It properly releases the memory allocated to the sequence abort
17457  * accept iocb.
17458  **/
17459 static void
17460 lpfc_sli4_seq_abort_rsp_cmpl(struct lpfc_hba *phba,
17461                              struct lpfc_iocbq *cmd_iocbq,
17462                              struct lpfc_iocbq *rsp_iocbq)
17463 {
17464         struct lpfc_nodelist *ndlp;
17465 
17466         if (cmd_iocbq) {
17467                 ndlp = (struct lpfc_nodelist *)cmd_iocbq->context1;
17468                 lpfc_nlp_put(ndlp);
17469                 lpfc_nlp_not_used(ndlp);
17470                 lpfc_sli_release_iocbq(phba, cmd_iocbq);
17471         }
17472 
17473         /* Failure means BLS ABORT RSP did not get delivered to remote node*/
17474         if (rsp_iocbq && rsp_iocbq->iocb.ulpStatus)
17475                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
17476                         "3154 BLS ABORT RSP failed, data:  x%x/x%x\n",
17477                         rsp_iocbq->iocb.ulpStatus,
17478                         rsp_iocbq->iocb.un.ulpWord[4]);
17479 }
17480 
17481 /**
17482  * lpfc_sli4_xri_inrange - check xri is in range of xris owned by driver.
17483  * @phba: Pointer to HBA context object.
17484  * @xri: xri id in transaction.
17485  *
17486  * This function validates the xri maps to the known range of XRIs allocated an
17487  * used by the driver.
17488  **/
17489 uint16_t
17490 lpfc_sli4_xri_inrange(struct lpfc_hba *phba,
17491                       uint16_t xri)
17492 {
17493         uint16_t i;
17494 
17495         for (i = 0; i < phba->sli4_hba.max_cfg_param.max_xri; i++) {
17496                 if (xri == phba->sli4_hba.xri_ids[i])
17497                         return i;
17498         }
17499         return NO_XRI;
17500 }
17501 
17502 /**
17503  * lpfc_sli4_seq_abort_rsp - bls rsp to sequence abort
17504  * @phba: Pointer to HBA context object.
17505  * @fc_hdr: pointer to a FC frame header.
17506  *
17507  * This function sends a basic response to a previous unsol sequence abort
17508  * event after aborting the sequence handling.
17509  **/
17510 void
17511 lpfc_sli4_seq_abort_rsp(struct lpfc_vport *vport,
17512                         struct fc_frame_header *fc_hdr, bool aborted)
17513 {
17514         struct lpfc_hba *phba = vport->phba;
17515         struct lpfc_iocbq *ctiocb = NULL;
17516         struct lpfc_nodelist *ndlp;
17517         uint16_t oxid, rxid, xri, lxri;
17518         uint32_t sid, fctl;
17519         IOCB_t *icmd;
17520         int rc;
17521 
17522         if (!lpfc_is_link_up(phba))
17523                 return;
17524 
17525         sid = sli4_sid_from_fc_hdr(fc_hdr);
17526         oxid = be16_to_cpu(fc_hdr->fh_ox_id);
17527         rxid = be16_to_cpu(fc_hdr->fh_rx_id);
17528 
17529         ndlp = lpfc_findnode_did(vport, sid);
17530         if (!ndlp) {
17531                 ndlp = lpfc_nlp_init(vport, sid);
17532                 if (!ndlp) {
17533                         lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS,
17534                                          "1268 Failed to allocate ndlp for "
17535                                          "oxid:x%x SID:x%x\n", oxid, sid);
17536                         return;
17537                 }
17538                 /* Put ndlp onto pport node list */
17539                 lpfc_enqueue_node(vport, ndlp);
17540         } else if (!NLP_CHK_NODE_ACT(ndlp)) {
17541                 /* re-setup ndlp without removing from node list */
17542                 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
17543                 if (!ndlp) {
17544                         lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS,
17545                                          "3275 Failed to active ndlp found "
17546                                          "for oxid:x%x SID:x%x\n", oxid, sid);
17547                         return;
17548                 }
17549         }
17550 
17551         /* Allocate buffer for rsp iocb */
17552         ctiocb = lpfc_sli_get_iocbq(phba);
17553         if (!ctiocb)
17554                 return;
17555 
17556         /* Extract the F_CTL field from FC_HDR */
17557         fctl = sli4_fctl_from_fc_hdr(fc_hdr);
17558 
17559         icmd = &ctiocb->iocb;
17560         icmd->un.xseq64.bdl.bdeSize = 0;
17561         icmd->un.xseq64.bdl.ulpIoTag32 = 0;
17562         icmd->un.xseq64.w5.hcsw.Dfctl = 0;
17563         icmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_BA_ACC;
17564         icmd->un.xseq64.w5.hcsw.Type = FC_TYPE_BLS;
17565 
17566         /* Fill in the rest of iocb fields */
17567         icmd->ulpCommand = CMD_XMIT_BLS_RSP64_CX;
17568         icmd->ulpBdeCount = 0;
17569         icmd->ulpLe = 1;
17570         icmd->ulpClass = CLASS3;
17571         icmd->ulpContext = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
17572         ctiocb->context1 = lpfc_nlp_get(ndlp);
17573 
17574         ctiocb->vport = phba->pport;
17575         ctiocb->iocb_cmpl = lpfc_sli4_seq_abort_rsp_cmpl;
17576         ctiocb->sli4_lxritag = NO_XRI;
17577         ctiocb->sli4_xritag = NO_XRI;
17578 
17579         if (fctl & FC_FC_EX_CTX)
17580                 /* Exchange responder sent the abort so we
17581                  * own the oxid.
17582                  */
17583                 xri = oxid;
17584         else
17585                 xri = rxid;
17586         lxri = lpfc_sli4_xri_inrange(phba, xri);
17587         if (lxri != NO_XRI)
17588                 lpfc_set_rrq_active(phba, ndlp, lxri,
17589                         (xri == oxid) ? rxid : oxid, 0);
17590         /* For BA_ABTS from exchange responder, if the logical xri with
17591          * the oxid maps to the FCP XRI range, the port no longer has
17592          * that exchange context, send a BLS_RJT. Override the IOCB for
17593          * a BA_RJT.
17594          */
17595         if ((fctl & FC_FC_EX_CTX) &&
17596             (lxri > lpfc_sli4_get_iocb_cnt(phba))) {
17597                 icmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_BA_RJT;
17598                 bf_set(lpfc_vndr_code, &icmd->un.bls_rsp, 0);
17599                 bf_set(lpfc_rsn_expln, &icmd->un.bls_rsp, FC_BA_RJT_INV_XID);
17600                 bf_set(lpfc_rsn_code, &icmd->un.bls_rsp, FC_BA_RJT_UNABLE);
17601         }
17602 
17603         /* If BA_ABTS failed to abort a partially assembled receive sequence,
17604          * the driver no longer has that exchange, send a BLS_RJT. Override
17605          * the IOCB for a BA_RJT.
17606          */
17607         if (aborted == false) {
17608                 icmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_BA_RJT;
17609                 bf_set(lpfc_vndr_code, &icmd->un.bls_rsp, 0);
17610                 bf_set(lpfc_rsn_expln, &icmd->un.bls_rsp, FC_BA_RJT_INV_XID);
17611                 bf_set(lpfc_rsn_code, &icmd->un.bls_rsp, FC_BA_RJT_UNABLE);
17612         }
17613 
17614         if (fctl & FC_FC_EX_CTX) {
17615                 /* ABTS sent by responder to CT exchange, construction
17616                  * of BA_ACC will use OX_ID from ABTS for the XRI_TAG
17617                  * field and RX_ID from ABTS for RX_ID field.
17618                  */
17619                 bf_set(lpfc_abts_orig, &icmd->un.bls_rsp, LPFC_ABTS_UNSOL_RSP);
17620         } else {
17621                 /* ABTS sent by initiator to CT exchange, construction
17622                  * of BA_ACC will need to allocate a new XRI as for the
17623                  * XRI_TAG field.
17624                  */
17625                 bf_set(lpfc_abts_orig, &icmd->un.bls_rsp, LPFC_ABTS_UNSOL_INT);
17626         }
17627         bf_set(lpfc_abts_rxid, &icmd->un.bls_rsp, rxid);
17628         bf_set(lpfc_abts_oxid, &icmd->un.bls_rsp, oxid);
17629 
17630         /* Xmit CT abts response on exchange <xid> */
17631         lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
17632                          "1200 Send BLS cmd x%x on oxid x%x Data: x%x\n",
17633                          icmd->un.xseq64.w5.hcsw.Rctl, oxid, phba->link_state);
17634 
17635         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, ctiocb, 0);
17636         if (rc == IOCB_ERROR) {
17637                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
17638                                  "2925 Failed to issue CT ABTS RSP x%x on "
17639                                  "xri x%x, Data x%x\n",
17640                                  icmd->un.xseq64.w5.hcsw.Rctl, oxid,
17641                                  phba->link_state);
17642                 lpfc_nlp_put(ndlp);
17643                 ctiocb->context1 = NULL;
17644                 lpfc_sli_release_iocbq(phba, ctiocb);
17645         }
17646 }
17647 
17648 /**
17649  * lpfc_sli4_handle_unsol_abort - Handle sli-4 unsolicited abort event
17650  * @vport: Pointer to the vport on which this sequence was received
17651  * @dmabuf: pointer to a dmabuf that describes the FC sequence
17652  *
17653  * This function handles an SLI-4 unsolicited abort event. If the unsolicited
17654  * receive sequence is only partially assembed by the driver, it shall abort
17655  * the partially assembled frames for the sequence. Otherwise, if the
17656  * unsolicited receive sequence has been completely assembled and passed to
17657  * the Upper Layer Protocol (UPL), it then mark the per oxid status for the
17658  * unsolicited sequence has been aborted. After that, it will issue a basic
17659  * accept to accept the abort.
17660  **/
17661 static void
17662 lpfc_sli4_handle_unsol_abort(struct lpfc_vport *vport,
17663                              struct hbq_dmabuf *dmabuf)
17664 {
17665         struct lpfc_hba *phba = vport->phba;
17666         struct fc_frame_header fc_hdr;
17667         uint32_t fctl;
17668         bool aborted;
17669 
17670         /* Make a copy of fc_hdr before the dmabuf being released */
17671         memcpy(&fc_hdr, dmabuf->hbuf.virt, sizeof(struct fc_frame_header));
17672         fctl = sli4_fctl_from_fc_hdr(&fc_hdr);
17673 
17674         if (fctl & FC_FC_EX_CTX) {
17675                 /* ABTS by responder to exchange, no cleanup needed */
17676                 aborted = true;
17677         } else {
17678                 /* ABTS by initiator to exchange, need to do cleanup */
17679                 aborted = lpfc_sli4_abort_partial_seq(vport, dmabuf);
17680                 if (aborted == false)
17681                         aborted = lpfc_sli4_abort_ulp_seq(vport, dmabuf);
17682         }
17683         lpfc_in_buf_free(phba, &dmabuf->dbuf);
17684 
17685         if (phba->nvmet_support) {
17686                 lpfc_nvmet_rcv_unsol_abort(vport, &fc_hdr);
17687                 return;
17688         }
17689 
17690         /* Respond with BA_ACC or BA_RJT accordingly */
17691         lpfc_sli4_seq_abort_rsp(vport, &fc_hdr, aborted);
17692 }
17693 
17694 /**
17695  * lpfc_seq_complete - Indicates if a sequence is complete
17696  * @dmabuf: pointer to a dmabuf that describes the FC sequence
17697  *
17698  * This function checks the sequence, starting with the frame described by
17699  * @dmabuf, to see if all the frames associated with this sequence are present.
17700  * the frames associated with this sequence are linked to the @dmabuf using the
17701  * dbuf list. This function looks for two major things. 1) That the first frame
17702  * has a sequence count of zero. 2) There is a frame with last frame of sequence
17703  * set. 3) That there are no holes in the sequence count. The function will
17704  * return 1 when the sequence is complete, otherwise it will return 0.
17705  **/
17706 static int
17707 lpfc_seq_complete(struct hbq_dmabuf *dmabuf)
17708 {
17709         struct fc_frame_header *hdr;
17710         struct lpfc_dmabuf *d_buf;
17711         struct hbq_dmabuf *seq_dmabuf;
17712         uint32_t fctl;
17713         int seq_count = 0;
17714 
17715         hdr = (struct fc_frame_header *)dmabuf->hbuf.virt;
17716         /* make sure first fame of sequence has a sequence count of zero */
17717         if (hdr->fh_seq_cnt != seq_count)
17718                 return 0;
17719         fctl = (hdr->fh_f_ctl[0] << 16 |
17720                 hdr->fh_f_ctl[1] << 8 |
17721                 hdr->fh_f_ctl[2]);
17722         /* If last frame of sequence we can return success. */
17723         if (fctl & FC_FC_END_SEQ)
17724                 return 1;
17725         list_for_each_entry(d_buf, &dmabuf->dbuf.list, list) {
17726                 seq_dmabuf = container_of(d_buf, struct hbq_dmabuf, dbuf);
17727                 hdr = (struct fc_frame_header *)seq_dmabuf->hbuf.virt;
17728                 /* If there is a hole in the sequence count then fail. */
17729                 if (++seq_count != be16_to_cpu(hdr->fh_seq_cnt))
17730                         return 0;
17731                 fctl = (hdr->fh_f_ctl[0] << 16 |
17732                         hdr->fh_f_ctl[1] << 8 |
17733                         hdr->fh_f_ctl[2]);
17734                 /* If last frame of sequence we can return success. */
17735                 if (fctl & FC_FC_END_SEQ)
17736                         return 1;
17737         }
17738         return 0;
17739 }
17740 
17741 /**
17742  * lpfc_prep_seq - Prep sequence for ULP processing
17743  * @vport: Pointer to the vport on which this sequence was received
17744  * @dmabuf: pointer to a dmabuf that describes the FC sequence
17745  *
17746  * This function takes a sequence, described by a list of frames, and creates
17747  * a list of iocbq structures to describe the sequence. This iocbq list will be
17748  * used to issue to the generic unsolicited sequence handler. This routine
17749  * returns a pointer to the first iocbq in the list. If the function is unable
17750  * to allocate an iocbq then it throw out the received frames that were not
17751  * able to be described and return a pointer to the first iocbq. If unable to
17752  * allocate any iocbqs (including the first) this function will return NULL.
17753  **/
17754 static struct lpfc_iocbq *
17755 lpfc_prep_seq(struct lpfc_vport *vport, struct hbq_dmabuf *seq_dmabuf)
17756 {
17757         struct hbq_dmabuf *hbq_buf;
17758         struct lpfc_dmabuf *d_buf, *n_buf;
17759         struct lpfc_iocbq *first_iocbq, *iocbq;
17760         struct fc_frame_header *fc_hdr;
17761         uint32_t sid;
17762         uint32_t len, tot_len;
17763         struct ulp_bde64 *pbde;
17764 
17765         fc_hdr = (struct fc_frame_header *)seq_dmabuf->hbuf.virt;
17766         /* remove from receive buffer list */
17767         list_del_init(&seq_dmabuf->hbuf.list);
17768         lpfc_update_rcv_time_stamp(vport);
17769         /* get the Remote Port's SID */
17770         sid = sli4_sid_from_fc_hdr(fc_hdr);
17771         tot_len = 0;
17772         /* Get an iocbq struct to fill in. */
17773         first_iocbq = lpfc_sli_get_iocbq(vport->phba);
17774         if (first_iocbq) {
17775                 /* Initialize the first IOCB. */
17776                 first_iocbq->iocb.unsli3.rcvsli3.acc_len = 0;
17777                 first_iocbq->iocb.ulpStatus = IOSTAT_SUCCESS;
17778                 first_iocbq->vport = vport;
17779 
17780                 /* Check FC Header to see what TYPE of frame we are rcv'ing */
17781                 if (sli4_type_from_fc_hdr(fc_hdr) == FC_TYPE_ELS) {
17782                         first_iocbq->iocb.ulpCommand = CMD_IOCB_RCV_ELS64_CX;
17783                         first_iocbq->iocb.un.rcvels.parmRo =
17784                                 sli4_did_from_fc_hdr(fc_hdr);
17785                         first_iocbq->iocb.ulpPU = PARM_NPIV_DID;
17786                 } else
17787                         first_iocbq->iocb.ulpCommand = CMD_IOCB_RCV_SEQ64_CX;
17788                 first_iocbq->iocb.ulpContext = NO_XRI;
17789                 first_iocbq->iocb.unsli3.rcvsli3.ox_id =
17790                         be16_to_cpu(fc_hdr->fh_ox_id);
17791                 /* iocbq is prepped for internal consumption.  Physical vpi. */
17792                 first_iocbq->iocb.unsli3.rcvsli3.vpi =
17793                         vport->phba->vpi_ids[vport->vpi];
17794                 /* put the first buffer into the first IOCBq */
17795                 tot_len = bf_get(lpfc_rcqe_length,
17796                                        &seq_dmabuf->cq_event.cqe.rcqe_cmpl);
17797 
17798                 first_iocbq->context2 = &seq_dmabuf->dbuf;
17799                 first_iocbq->context3 = NULL;
17800                 first_iocbq->iocb.ulpBdeCount = 1;
17801                 if (tot_len > LPFC_DATA_BUF_SIZE)
17802                         first_iocbq->iocb.un.cont64[0].tus.f.bdeSize =
17803                                                         LPFC_DATA_BUF_SIZE;
17804                 else
17805                         first_iocbq->iocb.un.cont64[0].tus.f.bdeSize = tot_len;
17806 
17807                 first_iocbq->iocb.un.rcvels.remoteID = sid;
17808 
17809                 first_iocbq->iocb.unsli3.rcvsli3.acc_len = tot_len;
17810         }
17811         iocbq = first_iocbq;
17812         /*
17813          * Each IOCBq can have two Buffers assigned, so go through the list
17814          * of buffers for this sequence and save two buffers in each IOCBq
17815          */
17816         list_for_each_entry_safe(d_buf, n_buf, &seq_dmabuf->dbuf.list, list) {
17817                 if (!iocbq) {
17818                         lpfc_in_buf_free(vport->phba, d_buf);
17819                         continue;
17820                 }
17821                 if (!iocbq->context3) {
17822                         iocbq->context3 = d_buf;
17823                         iocbq->iocb.ulpBdeCount++;
17824                         /* We need to get the size out of the right CQE */
17825                         hbq_buf = container_of(d_buf, struct hbq_dmabuf, dbuf);
17826                         len = bf_get(lpfc_rcqe_length,
17827                                        &hbq_buf->cq_event.cqe.rcqe_cmpl);
17828                         pbde = (struct ulp_bde64 *)
17829                                         &iocbq->iocb.unsli3.sli3Words[4];
17830                         if (len > LPFC_DATA_BUF_SIZE)
17831                                 pbde->tus.f.bdeSize = LPFC_DATA_BUF_SIZE;
17832                         else
17833                                 pbde->tus.f.bdeSize = len;
17834 
17835                         iocbq->iocb.unsli3.rcvsli3.acc_len += len;
17836                         tot_len += len;
17837                 } else {
17838                         iocbq = lpfc_sli_get_iocbq(vport->phba);
17839                         if (!iocbq) {
17840                                 if (first_iocbq) {
17841                                         first_iocbq->iocb.ulpStatus =
17842                                                         IOSTAT_FCP_RSP_ERROR;
17843                                         first_iocbq->iocb.un.ulpWord[4] =
17844                                                         IOERR_NO_RESOURCES;
17845                                 }
17846                                 lpfc_in_buf_free(vport->phba, d_buf);
17847                                 continue;
17848                         }
17849                         /* We need to get the size out of the right CQE */
17850                         hbq_buf = container_of(d_buf, struct hbq_dmabuf, dbuf);
17851                         len = bf_get(lpfc_rcqe_length,
17852                                        &hbq_buf->cq_event.cqe.rcqe_cmpl);
17853                         iocbq->context2 = d_buf;
17854                         iocbq->context3 = NULL;
17855                         iocbq->iocb.ulpBdeCount = 1;
17856                         if (len > LPFC_DATA_BUF_SIZE)
17857                                 iocbq->iocb.un.cont64[0].tus.f.bdeSize =
17858                                                         LPFC_DATA_BUF_SIZE;
17859                         else
17860                                 iocbq->iocb.un.cont64[0].tus.f.bdeSize = len;
17861 
17862                         tot_len += len;
17863                         iocbq->iocb.unsli3.rcvsli3.acc_len = tot_len;
17864 
17865                         iocbq->iocb.un.rcvels.remoteID = sid;
17866                         list_add_tail(&iocbq->list, &first_iocbq->list);
17867                 }
17868         }
17869         return first_iocbq;
17870 }
17871 
17872 static void
17873 lpfc_sli4_send_seq_to_ulp(struct lpfc_vport *vport,
17874                           struct hbq_dmabuf *seq_dmabuf)
17875 {
17876         struct fc_frame_header *fc_hdr;
17877         struct lpfc_iocbq *iocbq, *curr_iocb, *next_iocb;
17878         struct lpfc_hba *phba = vport->phba;
17879 
17880         fc_hdr = (struct fc_frame_header *)seq_dmabuf->hbuf.virt;
17881         iocbq = lpfc_prep_seq(vport, seq_dmabuf);
17882         if (!iocbq) {
17883                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
17884                                 "2707 Ring %d handler: Failed to allocate "
17885                                 "iocb Rctl x%x Type x%x received\n",
17886                                 LPFC_ELS_RING,
17887                                 fc_hdr->fh_r_ctl, fc_hdr->fh_type);
17888                 return;
17889         }
17890         if (!lpfc_complete_unsol_iocb(phba,
17891                                       phba->sli4_hba.els_wq->pring,
17892                                       iocbq, fc_hdr->fh_r_ctl,
17893                                       fc_hdr->fh_type))
17894                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
17895                                 "2540 Ring %d handler: unexpected Rctl "
17896                                 "x%x Type x%x received\n",
17897                                 LPFC_ELS_RING,
17898                                 fc_hdr->fh_r_ctl, fc_hdr->fh_type);
17899 
17900         /* Free iocb created in lpfc_prep_seq */
17901         list_for_each_entry_safe(curr_iocb, next_iocb,
17902                 &iocbq->list, list) {
17903                 list_del_init(&curr_iocb->list);
17904                 lpfc_sli_release_iocbq(phba, curr_iocb);
17905         }
17906         lpfc_sli_release_iocbq(phba, iocbq);
17907 }
17908 
17909 static void
17910 lpfc_sli4_mds_loopback_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
17911                             struct lpfc_iocbq *rspiocb)
17912 {
17913         struct lpfc_dmabuf *pcmd = cmdiocb->context2;
17914 
17915         if (pcmd && pcmd->virt)
17916                 dma_pool_free(phba->lpfc_drb_pool, pcmd->virt, pcmd->phys);
17917         kfree(pcmd);
17918         lpfc_sli_release_iocbq(phba, cmdiocb);
17919         lpfc_drain_txq(phba);
17920 }
17921 
17922 static void
17923 lpfc_sli4_handle_mds_loopback(struct lpfc_vport *vport,
17924                               struct hbq_dmabuf *dmabuf)
17925 {
17926         struct fc_frame_header *fc_hdr;
17927         struct lpfc_hba *phba = vport->phba;
17928         struct lpfc_iocbq *iocbq = NULL;
17929         union  lpfc_wqe *wqe;
17930         struct lpfc_dmabuf *pcmd = NULL;
17931         uint32_t frame_len;
17932         int rc;
17933         unsigned long iflags;
17934 
17935         fc_hdr = (struct fc_frame_header *)dmabuf->hbuf.virt;
17936         frame_len = bf_get(lpfc_rcqe_length, &dmabuf->cq_event.cqe.rcqe_cmpl);
17937 
17938         /* Send the received frame back */
17939         iocbq = lpfc_sli_get_iocbq(phba);
17940         if (!iocbq) {
17941                 /* Queue cq event and wakeup worker thread to process it */
17942                 spin_lock_irqsave(&phba->hbalock, iflags);
17943                 list_add_tail(&dmabuf->cq_event.list,
17944                               &phba->sli4_hba.sp_queue_event);
17945                 phba->hba_flag |= HBA_SP_QUEUE_EVT;
17946                 spin_unlock_irqrestore(&phba->hbalock, iflags);
17947                 lpfc_worker_wake_up(phba);
17948                 return;
17949         }
17950 
17951         /* Allocate buffer for command payload */
17952         pcmd = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
17953         if (pcmd)
17954                 pcmd->virt = dma_pool_alloc(phba->lpfc_drb_pool, GFP_KERNEL,
17955                                             &pcmd->phys);
17956         if (!pcmd || !pcmd->virt)
17957                 goto exit;
17958 
17959         INIT_LIST_HEAD(&pcmd->list);
17960 
17961         /* copyin the payload */
17962         memcpy(pcmd->virt, dmabuf->dbuf.virt, frame_len);
17963 
17964         /* fill in BDE's for command */
17965         iocbq->iocb.un.xseq64.bdl.addrHigh = putPaddrHigh(pcmd->phys);
17966         iocbq->iocb.un.xseq64.bdl.addrLow = putPaddrLow(pcmd->phys);
17967         iocbq->iocb.un.xseq64.bdl.bdeFlags = BUFF_TYPE_BDE_64;
17968         iocbq->iocb.un.xseq64.bdl.bdeSize = frame_len;
17969 
17970         iocbq->context2 = pcmd;
17971         iocbq->vport = vport;
17972         iocbq->iocb_flag &= ~LPFC_FIP_ELS_ID_MASK;
17973         iocbq->iocb_flag |= LPFC_USE_FCPWQIDX;
17974 
17975         /*
17976          * Setup rest of the iocb as though it were a WQE
17977          * Build the SEND_FRAME WQE
17978          */
17979         wqe = (union lpfc_wqe *)&iocbq->iocb;
17980 
17981         wqe->send_frame.frame_len = frame_len;
17982         wqe->send_frame.fc_hdr_wd0 = be32_to_cpu(*((uint32_t *)fc_hdr));
17983         wqe->send_frame.fc_hdr_wd1 = be32_to_cpu(*((uint32_t *)fc_hdr + 1));
17984         wqe->send_frame.fc_hdr_wd2 = be32_to_cpu(*((uint32_t *)fc_hdr + 2));
17985         wqe->send_frame.fc_hdr_wd3 = be32_to_cpu(*((uint32_t *)fc_hdr + 3));
17986         wqe->send_frame.fc_hdr_wd4 = be32_to_cpu(*((uint32_t *)fc_hdr + 4));
17987         wqe->send_frame.fc_hdr_wd5 = be32_to_cpu(*((uint32_t *)fc_hdr + 5));
17988 
17989         iocbq->iocb.ulpCommand = CMD_SEND_FRAME;
17990         iocbq->iocb.ulpLe = 1;
17991         iocbq->iocb_cmpl = lpfc_sli4_mds_loopback_cmpl;
17992         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocbq, 0);
17993         if (rc == IOCB_ERROR)
17994                 goto exit;
17995 
17996         lpfc_in_buf_free(phba, &dmabuf->dbuf);
17997         return;
17998 
17999 exit:
18000         lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
18001                         "2023 Unable to process MDS loopback frame\n");
18002         if (pcmd && pcmd->virt)
18003                 dma_pool_free(phba->lpfc_drb_pool, pcmd->virt, pcmd->phys);
18004         kfree(pcmd);
18005         if (iocbq)
18006                 lpfc_sli_release_iocbq(phba, iocbq);
18007         lpfc_in_buf_free(phba, &dmabuf->dbuf);
18008 }
18009 
18010 /**
18011  * lpfc_sli4_handle_received_buffer - Handle received buffers from firmware
18012  * @phba: Pointer to HBA context object.
18013  *
18014  * This function is called with no lock held. This function processes all
18015  * the received buffers and gives it to upper layers when a received buffer
18016  * indicates that it is the final frame in the sequence. The interrupt
18017  * service routine processes received buffers at interrupt contexts.
18018  * Worker thread calls lpfc_sli4_handle_received_buffer, which will call the
18019  * appropriate receive function when the final frame in a sequence is received.
18020  **/
18021 void
18022 lpfc_sli4_handle_received_buffer(struct lpfc_hba *phba,
18023                                  struct hbq_dmabuf *dmabuf)
18024 {
18025         struct hbq_dmabuf *seq_dmabuf;
18026         struct fc_frame_header *fc_hdr;
18027         struct lpfc_vport *vport;
18028         uint32_t fcfi;
18029         uint32_t did;
18030 
18031         /* Process each received buffer */
18032         fc_hdr = (struct fc_frame_header *)dmabuf->hbuf.virt;
18033 
18034         if (fc_hdr->fh_r_ctl == FC_RCTL_MDS_DIAGS ||
18035             fc_hdr->fh_r_ctl == FC_RCTL_DD_UNSOL_DATA) {
18036                 vport = phba->pport;
18037                 /* Handle MDS Loopback frames */
18038                 lpfc_sli4_handle_mds_loopback(vport, dmabuf);
18039                 return;
18040         }
18041 
18042         /* check to see if this a valid type of frame */
18043         if (lpfc_fc_frame_check(phba, fc_hdr)) {
18044                 lpfc_in_buf_free(phba, &dmabuf->dbuf);
18045                 return;
18046         }
18047 
18048         if ((bf_get(lpfc_cqe_code,
18049                     &dmabuf->cq_event.cqe.rcqe_cmpl) == CQE_CODE_RECEIVE_V1))
18050                 fcfi = bf_get(lpfc_rcqe_fcf_id_v1,
18051                               &dmabuf->cq_event.cqe.rcqe_cmpl);
18052         else
18053                 fcfi = bf_get(lpfc_rcqe_fcf_id,
18054                               &dmabuf->cq_event.cqe.rcqe_cmpl);
18055 
18056         if (fc_hdr->fh_r_ctl == 0xF4 && fc_hdr->fh_type == 0xFF) {
18057                 vport = phba->pport;
18058                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
18059                                 "2023 MDS Loopback %d bytes\n",
18060                                 bf_get(lpfc_rcqe_length,
18061                                        &dmabuf->cq_event.cqe.rcqe_cmpl));
18062                 /* Handle MDS Loopback frames */
18063                 lpfc_sli4_handle_mds_loopback(vport, dmabuf);
18064                 return;
18065         }
18066 
18067         /* d_id this frame is directed to */
18068         did = sli4_did_from_fc_hdr(fc_hdr);
18069 
18070         vport = lpfc_fc_frame_to_vport(phba, fc_hdr, fcfi, did);
18071         if (!vport) {
18072                 /* throw out the frame */
18073                 lpfc_in_buf_free(phba, &dmabuf->dbuf);
18074                 return;
18075         }
18076 
18077         /* vport is registered unless we rcv a FLOGI directed to Fabric_DID */
18078         if (!(vport->vpi_state & LPFC_VPI_REGISTERED) &&
18079                 (did != Fabric_DID)) {
18080                 /*
18081                  * Throw out the frame if we are not pt2pt.
18082                  * The pt2pt protocol allows for discovery frames
18083                  * to be received without a registered VPI.
18084                  */
18085                 if (!(vport->fc_flag & FC_PT2PT) ||
18086                         (phba->link_state == LPFC_HBA_READY)) {
18087                         lpfc_in_buf_free(phba, &dmabuf->dbuf);
18088                         return;
18089                 }
18090         }
18091 
18092         /* Handle the basic abort sequence (BA_ABTS) event */
18093         if (fc_hdr->fh_r_ctl == FC_RCTL_BA_ABTS) {
18094                 lpfc_sli4_handle_unsol_abort(vport, dmabuf);
18095                 return;
18096         }
18097 
18098         /* Link this frame */
18099         seq_dmabuf = lpfc_fc_frame_add(vport, dmabuf);
18100         if (!seq_dmabuf) {
18101                 /* unable to add frame to vport - throw it out */
18102                 lpfc_in_buf_free(phba, &dmabuf->dbuf);
18103                 return;
18104         }
18105         /* If not last frame in sequence continue processing frames. */
18106         if (!lpfc_seq_complete(seq_dmabuf))
18107                 return;
18108 
18109         /* Send the complete sequence to the upper layer protocol */
18110         lpfc_sli4_send_seq_to_ulp(vport, seq_dmabuf);
18111 }
18112 
18113 /**
18114  * lpfc_sli4_post_all_rpi_hdrs - Post the rpi header memory region to the port
18115  * @phba: pointer to lpfc hba data structure.
18116  *
18117  * This routine is invoked to post rpi header templates to the
18118  * HBA consistent with the SLI-4 interface spec.  This routine
18119  * posts a SLI4_PAGE_SIZE memory region to the port to hold up to
18120  * SLI4_PAGE_SIZE modulo 64 rpi context headers.
18121  *
18122  * This routine does not require any locks.  It's usage is expected
18123  * to be driver load or reset recovery when the driver is
18124  * sequential.
18125  *
18126  * Return codes
18127  *      0 - successful
18128  *      -EIO - The mailbox failed to complete successfully.
18129  *      When this error occurs, the driver is not guaranteed
18130  *      to have any rpi regions posted to the device and
18131  *      must either attempt to repost the regions or take a
18132  *      fatal error.
18133  **/
18134 int
18135 lpfc_sli4_post_all_rpi_hdrs(struct lpfc_hba *phba)
18136 {
18137         struct lpfc_rpi_hdr *rpi_page;
18138         uint32_t rc = 0;
18139         uint16_t lrpi = 0;
18140 
18141         /* SLI4 ports that support extents do not require RPI headers. */
18142         if (!phba->sli4_hba.rpi_hdrs_in_use)
18143                 goto exit;
18144         if (phba->sli4_hba.extents_in_use)
18145                 return -EIO;
18146 
18147         list_for_each_entry(rpi_page, &phba->sli4_hba.lpfc_rpi_hdr_list, list) {
18148                 /*
18149                  * Assign the rpi headers a physical rpi only if the driver
18150                  * has not initialized those resources.  A port reset only
18151                  * needs the headers posted.
18152                  */
18153                 if (bf_get(lpfc_rpi_rsrc_rdy, &phba->sli4_hba.sli4_flags) !=
18154                     LPFC_RPI_RSRC_RDY)
18155                         rpi_page->start_rpi = phba->sli4_hba.rpi_ids[lrpi];
18156 
18157                 rc = lpfc_sli4_post_rpi_hdr(phba, rpi_page);
18158                 if (rc != MBX_SUCCESS) {
18159                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
18160                                         "2008 Error %d posting all rpi "
18161                                         "headers\n", rc);
18162                         rc = -EIO;
18163                         break;
18164                 }
18165         }
18166 
18167  exit:
18168         bf_set(lpfc_rpi_rsrc_rdy, &phba->sli4_hba.sli4_flags,
18169                LPFC_RPI_RSRC_RDY);
18170         return rc;
18171 }
18172 
18173 /**
18174  * lpfc_sli4_post_rpi_hdr - Post an rpi header memory region to the port
18175  * @phba: pointer to lpfc hba data structure.
18176  * @rpi_page:  pointer to the rpi memory region.
18177  *
18178  * This routine is invoked to post a single rpi header to the
18179  * HBA consistent with the SLI-4 interface spec.  This memory region
18180  * maps up to 64 rpi context regions.
18181  *
18182  * Return codes
18183  *      0 - successful
18184  *      -ENOMEM - No available memory
18185  *      -EIO - The mailbox failed to complete successfully.
18186  **/
18187 int
18188 lpfc_sli4_post_rpi_hdr(struct lpfc_hba *phba, struct lpfc_rpi_hdr *rpi_page)
18189 {
18190         LPFC_MBOXQ_t *mboxq;
18191         struct lpfc_mbx_post_hdr_tmpl *hdr_tmpl;
18192         uint32_t rc = 0;
18193         uint32_t shdr_status, shdr_add_status;
18194         union lpfc_sli4_cfg_shdr *shdr;
18195 
18196         /* SLI4 ports that support extents do not require RPI headers. */
18197         if (!phba->sli4_hba.rpi_hdrs_in_use)
18198                 return rc;
18199         if (phba->sli4_hba.extents_in_use)
18200                 return -EIO;
18201 
18202         /* The port is notified of the header region via a mailbox command. */
18203         mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
18204         if (!mboxq) {
18205                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
18206                                 "2001 Unable to allocate memory for issuing "
18207                                 "SLI_CONFIG_SPECIAL mailbox command\n");
18208                 return -ENOMEM;
18209         }
18210 
18211         /* Post all rpi memory regions to the port. */
18212         hdr_tmpl = &mboxq->u.mqe.un.hdr_tmpl;
18213         lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_FCOE,
18214                          LPFC_MBOX_OPCODE_FCOE_POST_HDR_TEMPLATE,
18215                          sizeof(struct lpfc_mbx_post_hdr_tmpl) -
18216                          sizeof(struct lpfc_sli4_cfg_mhdr),
18217                          LPFC_SLI4_MBX_EMBED);
18218 
18219 
18220         /* Post the physical rpi to the port for this rpi header. */
18221         bf_set(lpfc_mbx_post_hdr_tmpl_rpi_offset, hdr_tmpl,
18222                rpi_page->start_rpi);
18223         bf_set(lpfc_mbx_post_hdr_tmpl_page_cnt,
18224                hdr_tmpl, rpi_page->page_count);
18225 
18226         hdr_tmpl->rpi_paddr_lo = putPaddrLow(rpi_page->dmabuf->phys);
18227         hdr_tmpl->rpi_paddr_hi = putPaddrHigh(rpi_page->dmabuf->phys);
18228         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
18229         shdr = (union lpfc_sli4_cfg_shdr *) &hdr_tmpl->header.cfg_shdr;
18230         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
18231         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
18232         if (rc != MBX_TIMEOUT)
18233                 mempool_free(mboxq, phba->mbox_mem_pool);
18234         if (shdr_status || shdr_add_status || rc) {
18235                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
18236                                 "2514 POST_RPI_HDR mailbox failed with "
18237                                 "status x%x add_status x%x, mbx status x%x\n",
18238                                 shdr_status, shdr_add_status, rc);
18239                 rc = -ENXIO;
18240         } else {
18241                 /*
18242                  * The next_rpi stores the next logical module-64 rpi value used
18243                  * to post physical rpis in subsequent rpi postings.
18244                  */
18245                 spin_lock_irq(&phba->hbalock);
18246                 phba->sli4_hba.next_rpi = rpi_page->next_rpi;
18247                 spin_unlock_irq(&phba->hbalock);
18248         }
18249         return rc;
18250 }
18251 
18252 /**
18253  * lpfc_sli4_alloc_rpi - Get an available rpi in the device's range
18254  * @phba: pointer to lpfc hba data structure.
18255  *
18256  * This routine is invoked to post rpi header templates to the
18257  * HBA consistent with the SLI-4 interface spec.  This routine
18258  * posts a SLI4_PAGE_SIZE memory region to the port to hold up to
18259  * SLI4_PAGE_SIZE modulo 64 rpi context headers.
18260  *
18261  * Returns
18262  *      A nonzero rpi defined as rpi_base <= rpi < max_rpi if successful
18263  *      LPFC_RPI_ALLOC_ERROR if no rpis are available.
18264  **/
18265 int
18266 lpfc_sli4_alloc_rpi(struct lpfc_hba *phba)
18267 {
18268         unsigned long rpi;
18269         uint16_t max_rpi, rpi_limit;
18270         uint16_t rpi_remaining, lrpi = 0;
18271         struct lpfc_rpi_hdr *rpi_hdr;
18272         unsigned long iflag;
18273 
18274         /*
18275          * Fetch the next logical rpi.  Because this index is logical,
18276          * the  driver starts at 0 each time.
18277          */
18278         spin_lock_irqsave(&phba->hbalock, iflag);
18279         max_rpi = phba->sli4_hba.max_cfg_param.max_rpi;
18280         rpi_limit = phba->sli4_hba.next_rpi;
18281 
18282         rpi = find_next_zero_bit(phba->sli4_hba.rpi_bmask, rpi_limit, 0);
18283         if (rpi >= rpi_limit)
18284                 rpi = LPFC_RPI_ALLOC_ERROR;
18285         else {
18286                 set_bit(rpi, phba->sli4_hba.rpi_bmask);
18287                 phba->sli4_hba.max_cfg_param.rpi_used++;
18288                 phba->sli4_hba.rpi_count++;
18289         }
18290         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
18291                         "0001 rpi:%x max:%x lim:%x\n",
18292                         (int) rpi, max_rpi, rpi_limit);
18293 
18294         /*
18295          * Don't try to allocate more rpi header regions if the device limit
18296          * has been exhausted.
18297          */
18298         if ((rpi == LPFC_RPI_ALLOC_ERROR) &&
18299             (phba->sli4_hba.rpi_count >= max_rpi)) {
18300                 spin_unlock_irqrestore(&phba->hbalock, iflag);
18301                 return rpi;
18302         }
18303 
18304         /*
18305          * RPI header postings are not required for SLI4 ports capable of
18306          * extents.
18307          */
18308         if (!phba->sli4_hba.rpi_hdrs_in_use) {
18309                 spin_unlock_irqrestore(&phba->hbalock, iflag);
18310                 return rpi;
18311         }
18312 
18313         /*
18314          * If the driver is running low on rpi resources, allocate another
18315          * page now.  Note that the next_rpi value is used because
18316          * it represents how many are actually in use whereas max_rpi notes
18317          * how many are supported max by the device.
18318          */
18319         rpi_remaining = phba->sli4_hba.next_rpi - phba->sli4_hba.rpi_count;
18320         spin_unlock_irqrestore(&phba->hbalock, iflag);
18321         if (rpi_remaining < LPFC_RPI_LOW_WATER_MARK) {
18322                 rpi_hdr = lpfc_sli4_create_rpi_hdr(phba);
18323                 if (!rpi_hdr) {
18324                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
18325                                         "2002 Error Could not grow rpi "
18326                                         "count\n");
18327                 } else {
18328                         lrpi = rpi_hdr->start_rpi;
18329                         rpi_hdr->start_rpi = phba->sli4_hba.rpi_ids[lrpi];
18330                         lpfc_sli4_post_rpi_hdr(phba, rpi_hdr);
18331                 }
18332         }
18333 
18334         return rpi;
18335 }
18336 
18337 /**
18338  * lpfc_sli4_free_rpi - Release an rpi for reuse.
18339  * @phba: pointer to lpfc hba data structure.
18340  *
18341  * This routine is invoked to release an rpi to the pool of
18342  * available rpis maintained by the driver.
18343  **/
18344 static void
18345 __lpfc_sli4_free_rpi(struct lpfc_hba *phba, int rpi)
18346 {
18347         /*
18348          * if the rpi value indicates a prior unreg has already
18349          * been done, skip the unreg.
18350          */
18351         if (rpi == LPFC_RPI_ALLOC_ERROR)
18352                 return;
18353 
18354         if (test_and_clear_bit(rpi, phba->sli4_hba.rpi_bmask)) {
18355                 phba->sli4_hba.rpi_count--;
18356                 phba->sli4_hba.max_cfg_param.rpi_used--;
18357         } else {
18358                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
18359                                 "2016 rpi %x not inuse\n",
18360                                 rpi);
18361         }
18362 }
18363 
18364 /**
18365  * lpfc_sli4_free_rpi - Release an rpi for reuse.
18366  * @phba: pointer to lpfc hba data structure.
18367  *
18368  * This routine is invoked to release an rpi to the pool of
18369  * available rpis maintained by the driver.
18370  **/
18371 void
18372 lpfc_sli4_free_rpi(struct lpfc_hba *phba, int rpi)
18373 {
18374         spin_lock_irq(&phba->hbalock);
18375         __lpfc_sli4_free_rpi(phba, rpi);
18376         spin_unlock_irq(&phba->hbalock);
18377 }
18378 
18379 /**
18380  * lpfc_sli4_remove_rpis - Remove the rpi bitmask region
18381  * @phba: pointer to lpfc hba data structure.
18382  *
18383  * This routine is invoked to remove the memory region that
18384  * provided rpi via a bitmask.
18385  **/
18386 void
18387 lpfc_sli4_remove_rpis(struct lpfc_hba *phba)
18388 {
18389         kfree(phba->sli4_hba.rpi_bmask);
18390         kfree(phba->sli4_hba.rpi_ids);
18391         bf_set(lpfc_rpi_rsrc_rdy, &phba->sli4_hba.sli4_flags, 0);
18392 }
18393 
18394 /**
18395  * lpfc_sli4_resume_rpi - Remove the rpi bitmask region
18396  * @phba: pointer to lpfc hba data structure.
18397  *
18398  * This routine is invoked to remove the memory region that
18399  * provided rpi via a bitmask.
18400  **/
18401 int
18402 lpfc_sli4_resume_rpi(struct lpfc_nodelist *ndlp,
18403         void (*cmpl)(struct lpfc_hba *, LPFC_MBOXQ_t *), void *arg)
18404 {
18405         LPFC_MBOXQ_t *mboxq;
18406         struct lpfc_hba *phba = ndlp->phba;
18407         int rc;
18408 
18409         /* The port is notified of the header region via a mailbox command. */
18410         mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
18411         if (!mboxq)
18412                 return -ENOMEM;
18413 
18414         /* Post all rpi memory regions to the port. */
18415         lpfc_resume_rpi(mboxq, ndlp);
18416         if (cmpl) {
18417                 mboxq->mbox_cmpl = cmpl;
18418                 mboxq->ctx_buf = arg;
18419                 mboxq->ctx_ndlp = ndlp;
18420         } else
18421                 mboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
18422         mboxq->vport = ndlp->vport;
18423         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
18424         if (rc == MBX_NOT_FINISHED) {
18425                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
18426                                 "2010 Resume RPI Mailbox failed "
18427                                 "status %d, mbxStatus x%x\n", rc,
18428                                 bf_get(lpfc_mqe_status, &mboxq->u.mqe));
18429                 mempool_free(mboxq, phba->mbox_mem_pool);
18430                 return -EIO;
18431         }
18432         return 0;
18433 }
18434 
18435 /**
18436  * lpfc_sli4_init_vpi - Initialize a vpi with the port
18437  * @vport: Pointer to the vport for which the vpi is being initialized
18438  *
18439  * This routine is invoked to activate a vpi with the port.
18440  *
18441  * Returns:
18442  *    0 success
18443  *    -Evalue otherwise
18444  **/
18445 int
18446 lpfc_sli4_init_vpi(struct lpfc_vport *vport)
18447 {
18448         LPFC_MBOXQ_t *mboxq;
18449         int rc = 0;
18450         int retval = MBX_SUCCESS;
18451         uint32_t mbox_tmo;
18452         struct lpfc_hba *phba = vport->phba;
18453         mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
18454         if (!mboxq)
18455                 return -ENOMEM;
18456         lpfc_init_vpi(phba, mboxq, vport->vpi);
18457         mbox_tmo = lpfc_mbox_tmo_val(phba, mboxq);
18458         rc = lpfc_sli_issue_mbox_wait(phba, mboxq, mbox_tmo);
18459         if (rc != MBX_SUCCESS) {
18460                 lpfc_printf_vlog(vport, KERN_ERR, LOG_SLI,
18461                                 "2022 INIT VPI Mailbox failed "
18462                                 "status %d, mbxStatus x%x\n", rc,
18463                                 bf_get(lpfc_mqe_status, &mboxq->u.mqe));
18464                 retval = -EIO;
18465         }
18466         if (rc != MBX_TIMEOUT)
18467                 mempool_free(mboxq, vport->phba->mbox_mem_pool);
18468 
18469         return retval;
18470 }
18471 
18472 /**
18473  * lpfc_mbx_cmpl_add_fcf_record - add fcf mbox completion handler.
18474  * @phba: pointer to lpfc hba data structure.
18475  * @mboxq: Pointer to mailbox object.
18476  *
18477  * This routine is invoked to manually add a single FCF record. The caller
18478  * must pass a completely initialized FCF_Record.  This routine takes
18479  * care of the nonembedded mailbox operations.
18480  **/
18481 static void
18482 lpfc_mbx_cmpl_add_fcf_record(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
18483 {
18484         void *virt_addr;
18485         union lpfc_sli4_cfg_shdr *shdr;
18486         uint32_t shdr_status, shdr_add_status;
18487 
18488         virt_addr = mboxq->sge_array->addr[0];
18489         /* The IOCTL status is embedded in the mailbox subheader. */
18490         shdr = (union lpfc_sli4_cfg_shdr *) virt_addr;
18491         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
18492         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
18493 
18494         if ((shdr_status || shdr_add_status) &&
18495                 (shdr_status != STATUS_FCF_IN_USE))
18496                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
18497                         "2558 ADD_FCF_RECORD mailbox failed with "
18498                         "status x%x add_status x%x\n",
18499                         shdr_status, shdr_add_status);
18500 
18501         lpfc_sli4_mbox_cmd_free(phba, mboxq);
18502 }
18503 
18504 /**
18505  * lpfc_sli4_add_fcf_record - Manually add an FCF Record.
18506  * @phba: pointer to lpfc hba data structure.
18507  * @fcf_record:  pointer to the initialized fcf record to add.
18508  *
18509  * This routine is invoked to manually add a single FCF record. The caller
18510  * must pass a completely initialized FCF_Record.  This routine takes
18511  * care of the nonembedded mailbox operations.
18512  **/
18513 int
18514 lpfc_sli4_add_fcf_record(struct lpfc_hba *phba, struct fcf_record *fcf_record)
18515 {
18516         int rc = 0;
18517         LPFC_MBOXQ_t *mboxq;
18518         uint8_t *bytep;
18519         void *virt_addr;
18520         struct lpfc_mbx_sge sge;
18521         uint32_t alloc_len, req_len;
18522         uint32_t fcfindex;
18523 
18524         mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
18525         if (!mboxq) {
18526                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
18527                         "2009 Failed to allocate mbox for ADD_FCF cmd\n");
18528                 return -ENOMEM;
18529         }
18530 
18531         req_len = sizeof(struct fcf_record) + sizeof(union lpfc_sli4_cfg_shdr) +
18532                   sizeof(uint32_t);
18533 
18534         /* Allocate DMA memory and set up the non-embedded mailbox command */
18535         alloc_len = lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_FCOE,
18536                                      LPFC_MBOX_OPCODE_FCOE_ADD_FCF,
18537                                      req_len, LPFC_SLI4_MBX_NEMBED);
18538         if (alloc_len < req_len) {
18539                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
18540                         "2523 Allocated DMA memory size (x%x) is "
18541                         "less than the requested DMA memory "
18542                         "size (x%x)\n", alloc_len, req_len);
18543                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
18544                 return -ENOMEM;
18545         }
18546 
18547         /*
18548          * Get the first SGE entry from the non-embedded DMA memory.  This
18549          * routine only uses a single SGE.
18550          */
18551         lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
18552         virt_addr = mboxq->sge_array->addr[0];
18553         /*
18554          * Configure the FCF record for FCFI 0.  This is the driver's
18555          * hardcoded default and gets used in nonFIP mode.
18556          */
18557         fcfindex = bf_get(lpfc_fcf_record_fcf_index, fcf_record);
18558         bytep = virt_addr + sizeof(union lpfc_sli4_cfg_shdr);
18559         lpfc_sli_pcimem_bcopy(&fcfindex, bytep, sizeof(uint32_t));
18560 
18561         /*
18562          * Copy the fcf_index and the FCF Record Data. The data starts after
18563          * the FCoE header plus word10. The data copy needs to be endian
18564          * correct.
18565          */
18566         bytep += sizeof(uint32_t);
18567         lpfc_sli_pcimem_bcopy(fcf_record, bytep, sizeof(struct fcf_record));
18568         mboxq->vport = phba->pport;
18569         mboxq->mbox_cmpl = lpfc_mbx_cmpl_add_fcf_record;
18570         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
18571         if (rc == MBX_NOT_FINISHED) {
18572                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
18573                         "2515 ADD_FCF_RECORD mailbox failed with "
18574                         "status 0x%x\n", rc);
18575                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
18576                 rc = -EIO;
18577         } else
18578                 rc = 0;
18579 
18580         return rc;
18581 }
18582 
18583 /**
18584  * lpfc_sli4_build_dflt_fcf_record - Build the driver's default FCF Record.
18585  * @phba: pointer to lpfc hba data structure.
18586  * @fcf_record:  pointer to the fcf record to write the default data.
18587  * @fcf_index: FCF table entry index.
18588  *
18589  * This routine is invoked to build the driver's default FCF record.  The
18590  * values used are hardcoded.  This routine handles memory initialization.
18591  *
18592  **/
18593 void
18594 lpfc_sli4_build_dflt_fcf_record(struct lpfc_hba *phba,
18595                                 struct fcf_record *fcf_record,
18596                                 uint16_t fcf_index)
18597 {
18598         memset(fcf_record, 0, sizeof(struct fcf_record));
18599         fcf_record->max_rcv_size = LPFC_FCOE_MAX_RCV_SIZE;
18600         fcf_record->fka_adv_period = LPFC_FCOE_FKA_ADV_PER;
18601         fcf_record->fip_priority = LPFC_FCOE_FIP_PRIORITY;
18602         bf_set(lpfc_fcf_record_mac_0, fcf_record, phba->fc_map[0]);
18603         bf_set(lpfc_fcf_record_mac_1, fcf_record, phba->fc_map[1]);
18604         bf_set(lpfc_fcf_record_mac_2, fcf_record, phba->fc_map[2]);
18605         bf_set(lpfc_fcf_record_mac_3, fcf_record, LPFC_FCOE_FCF_MAC3);
18606         bf_set(lpfc_fcf_record_mac_4, fcf_record, LPFC_FCOE_FCF_MAC4);
18607         bf_set(lpfc_fcf_record_mac_5, fcf_record, LPFC_FCOE_FCF_MAC5);
18608         bf_set(lpfc_fcf_record_fc_map_0, fcf_record, phba->fc_map[0]);
18609         bf_set(lpfc_fcf_record_fc_map_1, fcf_record, phba->fc_map[1]);
18610         bf_set(lpfc_fcf_record_fc_map_2, fcf_record, phba->fc_map[2]);
18611         bf_set(lpfc_fcf_record_fcf_valid, fcf_record, 1);
18612         bf_set(lpfc_fcf_record_fcf_avail, fcf_record, 1);
18613         bf_set(lpfc_fcf_record_fcf_index, fcf_record, fcf_index);
18614         bf_set(lpfc_fcf_record_mac_addr_prov, fcf_record,
18615                 LPFC_FCF_FPMA | LPFC_FCF_SPMA);
18616         /* Set the VLAN bit map */
18617         if (phba->valid_vlan) {
18618                 fcf_record->vlan_bitmap[phba->vlan_id / 8]
18619                         = 1 << (phba->vlan_id % 8);
18620         }
18621 }
18622 
18623 /**
18624  * lpfc_sli4_fcf_scan_read_fcf_rec - Read hba fcf record for fcf scan.
18625  * @phba: pointer to lpfc hba data structure.
18626  * @fcf_index: FCF table entry offset.
18627  *
18628  * This routine is invoked to scan the entire FCF table by reading FCF
18629  * record and processing it one at a time starting from the @fcf_index
18630  * for initial FCF discovery or fast FCF failover rediscovery.
18631  *
18632  * Return 0 if the mailbox command is submitted successfully, none 0
18633  * otherwise.
18634  **/
18635 int
18636 lpfc_sli4_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, uint16_t fcf_index)
18637 {
18638         int rc = 0, error;
18639         LPFC_MBOXQ_t *mboxq;
18640 
18641         phba->fcoe_eventtag_at_fcf_scan = phba->fcoe_eventtag;
18642         phba->fcoe_cvl_eventtag_attn = phba->fcoe_cvl_eventtag;
18643         mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
18644         if (!mboxq) {
18645                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
18646                                 "2000 Failed to allocate mbox for "
18647                                 "READ_FCF cmd\n");
18648                 error = -ENOMEM;
18649                 goto fail_fcf_scan;
18650         }
18651         /* Construct the read FCF record mailbox command */
18652         rc = lpfc_sli4_mbx_read_fcf_rec(phba, mboxq, fcf_index);
18653         if (rc) {
18654                 error = -EINVAL;
18655                 goto fail_fcf_scan;
18656         }
18657         /* Issue the mailbox command asynchronously */
18658         mboxq->vport = phba->pport;
18659         mboxq->mbox_cmpl = lpfc_mbx_cmpl_fcf_scan_read_fcf_rec;
18660 
18661         spin_lock_irq(&phba->hbalock);
18662         phba->hba_flag |= FCF_TS_INPROG;
18663         spin_unlock_irq(&phba->hbalock);
18664 
18665         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
18666         if (rc == MBX_NOT_FINISHED)
18667                 error = -EIO;
18668         else {
18669                 /* Reset eligible FCF count for new scan */
18670                 if (fcf_index == LPFC_FCOE_FCF_GET_FIRST)
18671                         phba->fcf.eligible_fcf_cnt = 0;
18672                 error = 0;
18673         }
18674 fail_fcf_scan:
18675         if (error) {
18676                 if (mboxq)
18677                         lpfc_sli4_mbox_cmd_free(phba, mboxq);
18678                 /* FCF scan failed, clear FCF_TS_INPROG flag */
18679                 spin_lock_irq(&phba->hbalock);
18680                 phba->hba_flag &= ~FCF_TS_INPROG;
18681                 spin_unlock_irq(&phba->hbalock);
18682         }
18683         return error;
18684 }
18685 
18686 /**
18687  * lpfc_sli4_fcf_rr_read_fcf_rec - Read hba fcf record for roundrobin fcf.
18688  * @phba: pointer to lpfc hba data structure.
18689  * @fcf_index: FCF table entry offset.
18690  *
18691  * This routine is invoked to read an FCF record indicated by @fcf_index
18692  * and to use it for FLOGI roundrobin FCF failover.
18693  *
18694  * Return 0 if the mailbox command is submitted successfully, none 0
18695  * otherwise.
18696  **/
18697 int
18698 lpfc_sli4_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, uint16_t fcf_index)
18699 {
18700         int rc = 0, error;
18701         LPFC_MBOXQ_t *mboxq;
18702 
18703         mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
18704         if (!mboxq) {
18705                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_INIT,
18706                                 "2763 Failed to allocate mbox for "
18707                                 "READ_FCF cmd\n");
18708                 error = -ENOMEM;
18709                 goto fail_fcf_read;
18710         }
18711         /* Construct the read FCF record mailbox command */
18712         rc = lpfc_sli4_mbx_read_fcf_rec(phba, mboxq, fcf_index);
18713         if (rc) {
18714                 error = -EINVAL;
18715                 goto fail_fcf_read;
18716         }
18717         /* Issue the mailbox command asynchronously */
18718         mboxq->vport = phba->pport;
18719         mboxq->mbox_cmpl = lpfc_mbx_cmpl_fcf_rr_read_fcf_rec;
18720         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
18721         if (rc == MBX_NOT_FINISHED)
18722                 error = -EIO;
18723         else
18724                 error = 0;
18725 
18726 fail_fcf_read:
18727         if (error && mboxq)
18728                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
18729         return error;
18730 }
18731 
18732 /**
18733  * lpfc_sli4_read_fcf_rec - Read hba fcf record for update eligible fcf bmask.
18734  * @phba: pointer to lpfc hba data structure.
18735  * @fcf_index: FCF table entry offset.
18736  *
18737  * This routine is invoked to read an FCF record indicated by @fcf_index to
18738  * determine whether it's eligible for FLOGI roundrobin failover list.
18739  *
18740  * Return 0 if the mailbox command is submitted successfully, none 0
18741  * otherwise.
18742  **/
18743 int
18744 lpfc_sli4_read_fcf_rec(struct lpfc_hba *phba, uint16_t fcf_index)
18745 {
18746         int rc = 0, error;
18747         LPFC_MBOXQ_t *mboxq;
18748 
18749         mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
18750         if (!mboxq) {
18751                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_INIT,
18752                                 "2758 Failed to allocate mbox for "
18753                                 "READ_FCF cmd\n");
18754                                 error = -ENOMEM;
18755                                 goto fail_fcf_read;
18756         }
18757         /* Construct the read FCF record mailbox command */
18758         rc = lpfc_sli4_mbx_read_fcf_rec(phba, mboxq, fcf_index);
18759         if (rc) {
18760                 error = -EINVAL;
18761                 goto fail_fcf_read;
18762         }
18763         /* Issue the mailbox command asynchronously */
18764         mboxq->vport = phba->pport;
18765         mboxq->mbox_cmpl = lpfc_mbx_cmpl_read_fcf_rec;
18766         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
18767         if (rc == MBX_NOT_FINISHED)
18768                 error = -EIO;
18769         else
18770                 error = 0;
18771 
18772 fail_fcf_read:
18773         if (error && mboxq)
18774                 lpfc_sli4_mbox_cmd_free(phba, mboxq);
18775         return error;
18776 }
18777 
18778 /**
18779  * lpfc_check_next_fcf_pri_level
18780  * phba pointer to the lpfc_hba struct for this port.
18781  * This routine is called from the lpfc_sli4_fcf_rr_next_index_get
18782  * routine when the rr_bmask is empty. The FCF indecies are put into the
18783  * rr_bmask based on their priority level. Starting from the highest priority
18784  * to the lowest. The most likely FCF candidate will be in the highest
18785  * priority group. When this routine is called it searches the fcf_pri list for
18786  * next lowest priority group and repopulates the rr_bmask with only those
18787  * fcf_indexes.
18788  * returns:
18789  * 1=success 0=failure
18790  **/
18791 static int
18792 lpfc_check_next_fcf_pri_level(struct lpfc_hba *phba)
18793 {
18794         uint16_t next_fcf_pri;
18795         uint16_t last_index;
18796         struct lpfc_fcf_pri *fcf_pri;
18797         int rc;
18798         int ret = 0;
18799 
18800         last_index = find_first_bit(phba->fcf.fcf_rr_bmask,
18801                         LPFC_SLI4_FCF_TBL_INDX_MAX);
18802         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
18803                         "3060 Last IDX %d\n", last_index);
18804 
18805         /* Verify the priority list has 2 or more entries */
18806         spin_lock_irq(&phba->hbalock);
18807         if (list_empty(&phba->fcf.fcf_pri_list) ||
18808             list_is_singular(&phba->fcf.fcf_pri_list)) {
18809                 spin_unlock_irq(&phba->hbalock);
18810                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
18811                         "3061 Last IDX %d\n", last_index);
18812                 return 0; /* Empty rr list */
18813         }
18814         spin_unlock_irq(&phba->hbalock);
18815 
18816         next_fcf_pri = 0;
18817         /*
18818          * Clear the rr_bmask and set all of the bits that are at this
18819          * priority.
18820          */
18821         memset(phba->fcf.fcf_rr_bmask, 0,
18822                         sizeof(*phba->fcf.fcf_rr_bmask));
18823         spin_lock_irq(&phba->hbalock);
18824         list_for_each_entry(fcf_pri, &phba->fcf.fcf_pri_list, list) {
18825                 if (fcf_pri->fcf_rec.flag & LPFC_FCF_FLOGI_FAILED)
18826                         continue;
18827                 /*
18828                  * the 1st priority that has not FLOGI failed
18829                  * will be the highest.
18830                  */
18831                 if (!next_fcf_pri)
18832                         next_fcf_pri = fcf_pri->fcf_rec.priority;
18833                 spin_unlock_irq(&phba->hbalock);
18834                 if (fcf_pri->fcf_rec.priority == next_fcf_pri) {
18835                         rc = lpfc_sli4_fcf_rr_index_set(phba,
18836                                                 fcf_pri->fcf_rec.fcf_index);
18837                         if (rc)
18838                                 return 0;
18839                 }
18840                 spin_lock_irq(&phba->hbalock);
18841         }
18842         /*
18843          * if next_fcf_pri was not set above and the list is not empty then
18844          * we have failed flogis on all of them. So reset flogi failed
18845          * and start at the beginning.
18846          */
18847         if (!next_fcf_pri && !list_empty(&phba->fcf.fcf_pri_list)) {
18848                 list_for_each_entry(fcf_pri, &phba->fcf.fcf_pri_list, list) {
18849                         fcf_pri->fcf_rec.flag &= ~LPFC_FCF_FLOGI_FAILED;
18850                         /*
18851                          * the 1st priority that has not FLOGI failed
18852                          * will be the highest.
18853                          */
18854                         if (!next_fcf_pri)
18855                                 next_fcf_pri = fcf_pri->fcf_rec.priority;
18856                         spin_unlock_irq(&phba->hbalock);
18857                         if (fcf_pri->fcf_rec.priority == next_fcf_pri) {
18858                                 rc = lpfc_sli4_fcf_rr_index_set(phba,
18859                                                 fcf_pri->fcf_rec.fcf_index);
18860                                 if (rc)
18861                                         return 0;
18862                         }
18863                         spin_lock_irq(&phba->hbalock);
18864                 }
18865         } else
18866                 ret = 1;
18867         spin_unlock_irq(&phba->hbalock);
18868 
18869         return ret;
18870 }
18871 /**
18872  * lpfc_sli4_fcf_rr_next_index_get - Get next eligible fcf record index
18873  * @phba: pointer to lpfc hba data structure.
18874  *
18875  * This routine is to get the next eligible FCF record index in a round
18876  * robin fashion. If the next eligible FCF record index equals to the
18877  * initial roundrobin FCF record index, LPFC_FCOE_FCF_NEXT_NONE (0xFFFF)
18878  * shall be returned, otherwise, the next eligible FCF record's index
18879  * shall be returned.
18880  **/
18881 uint16_t
18882 lpfc_sli4_fcf_rr_next_index_get(struct lpfc_hba *phba)
18883 {
18884         uint16_t next_fcf_index;
18885 
18886 initial_priority:
18887         /* Search start from next bit of currently registered FCF index */
18888         next_fcf_index = phba->fcf.current_rec.fcf_indx;
18889 
18890 next_priority:
18891         /* Determine the next fcf index to check */
18892         next_fcf_index = (next_fcf_index + 1) % LPFC_SLI4_FCF_TBL_INDX_MAX;
18893         next_fcf_index = find_next_bit(phba->fcf.fcf_rr_bmask,
18894                                        LPFC_SLI4_FCF_TBL_INDX_MAX,
18895                                        next_fcf_index);
18896 
18897         /* Wrap around condition on phba->fcf.fcf_rr_bmask */
18898         if (next_fcf_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) {
18899                 /*
18900                  * If we have wrapped then we need to clear the bits that
18901                  * have been tested so that we can detect when we should
18902                  * change the priority level.
18903                  */
18904                 next_fcf_index = find_next_bit(phba->fcf.fcf_rr_bmask,
18905                                                LPFC_SLI4_FCF_TBL_INDX_MAX, 0);
18906         }
18907 
18908 
18909         /* Check roundrobin failover list empty condition */
18910         if (next_fcf_index >= LPFC_SLI4_FCF_TBL_INDX_MAX ||
18911                 next_fcf_index == phba->fcf.current_rec.fcf_indx) {
18912                 /*
18913                  * If next fcf index is not found check if there are lower
18914                  * Priority level fcf's in the fcf_priority list.
18915                  * Set up the rr_bmask with all of the avaiable fcf bits
18916                  * at that level and continue the selection process.
18917                  */
18918                 if (lpfc_check_next_fcf_pri_level(phba))
18919                         goto initial_priority;
18920                 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
18921                                 "2844 No roundrobin failover FCF available\n");
18922 
18923                 return LPFC_FCOE_FCF_NEXT_NONE;
18924         }
18925 
18926         if (next_fcf_index < LPFC_SLI4_FCF_TBL_INDX_MAX &&
18927                 phba->fcf.fcf_pri[next_fcf_index].fcf_rec.flag &
18928                 LPFC_FCF_FLOGI_FAILED) {
18929                 if (list_is_singular(&phba->fcf.fcf_pri_list))
18930                         return LPFC_FCOE_FCF_NEXT_NONE;
18931 
18932                 goto next_priority;
18933         }
18934 
18935         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
18936                         "2845 Get next roundrobin failover FCF (x%x)\n",
18937                         next_fcf_index);
18938 
18939         return next_fcf_index;
18940 }
18941 
18942 /**
18943  * lpfc_sli4_fcf_rr_index_set - Set bmask with eligible fcf record index
18944  * @phba: pointer to lpfc hba data structure.
18945  *
18946  * This routine sets the FCF record index in to the eligible bmask for
18947  * roundrobin failover search. It checks to make sure that the index
18948  * does not go beyond the range of the driver allocated bmask dimension
18949  * before setting the bit.
18950  *
18951  * Returns 0 if the index bit successfully set, otherwise, it returns
18952  * -EINVAL.
18953  **/
18954 int
18955 lpfc_sli4_fcf_rr_index_set(struct lpfc_hba *phba, uint16_t fcf_index)
18956 {
18957         if (fcf_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) {
18958                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
18959                                 "2610 FCF (x%x) reached driver's book "
18960                                 "keeping dimension:x%x\n",
18961                                 fcf_index, LPFC_SLI4_FCF_TBL_INDX_MAX);
18962                 return -EINVAL;
18963         }
18964         /* Set the eligible FCF record index bmask */
18965         set_bit(fcf_index, phba->fcf.fcf_rr_bmask);
18966 
18967         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
18968                         "2790 Set FCF (x%x) to roundrobin FCF failover "
18969                         "bmask\n", fcf_index);
18970 
18971         return 0;
18972 }
18973 
18974 /**
18975  * lpfc_sli4_fcf_rr_index_clear - Clear bmask from eligible fcf record index
18976  * @phba: pointer to lpfc hba data structure.
18977  *
18978  * This routine clears the FCF record index from the eligible bmask for
18979  * roundrobin failover search. It checks to make sure that the index
18980  * does not go beyond the range of the driver allocated bmask dimension
18981  * before clearing the bit.
18982  **/
18983 void
18984 lpfc_sli4_fcf_rr_index_clear(struct lpfc_hba *phba, uint16_t fcf_index)
18985 {
18986         struct lpfc_fcf_pri *fcf_pri, *fcf_pri_next;
18987         if (fcf_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) {
18988                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
18989                                 "2762 FCF (x%x) reached driver's book "
18990                                 "keeping dimension:x%x\n",
18991                                 fcf_index, LPFC_SLI4_FCF_TBL_INDX_MAX);
18992                 return;
18993         }
18994         /* Clear the eligible FCF record index bmask */
18995         spin_lock_irq(&phba->hbalock);
18996         list_for_each_entry_safe(fcf_pri, fcf_pri_next, &phba->fcf.fcf_pri_list,
18997                                  list) {
18998                 if (fcf_pri->fcf_rec.fcf_index == fcf_index) {
18999                         list_del_init(&fcf_pri->list);
19000                         break;
19001                 }
19002         }
19003         spin_unlock_irq(&phba->hbalock);
19004         clear_bit(fcf_index, phba->fcf.fcf_rr_bmask);
19005 
19006         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
19007                         "2791 Clear FCF (x%x) from roundrobin failover "
19008                         "bmask\n", fcf_index);
19009 }
19010 
19011 /**
19012  * lpfc_mbx_cmpl_redisc_fcf_table - completion routine for rediscover FCF table
19013  * @phba: pointer to lpfc hba data structure.
19014  *
19015  * This routine is the completion routine for the rediscover FCF table mailbox
19016  * command. If the mailbox command returned failure, it will try to stop the
19017  * FCF rediscover wait timer.
19018  **/
19019 static void
19020 lpfc_mbx_cmpl_redisc_fcf_table(struct lpfc_hba *phba, LPFC_MBOXQ_t *mbox)
19021 {
19022         struct lpfc_mbx_redisc_fcf_tbl *redisc_fcf;
19023         uint32_t shdr_status, shdr_add_status;
19024 
19025         redisc_fcf = &mbox->u.mqe.un.redisc_fcf_tbl;
19026 
19027         shdr_status = bf_get(lpfc_mbox_hdr_status,
19028                              &redisc_fcf->header.cfg_shdr.response);
19029         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status,
19030                              &redisc_fcf->header.cfg_shdr.response);
19031         if (shdr_status || shdr_add_status) {
19032                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
19033                                 "2746 Requesting for FCF rediscovery failed "
19034                                 "status x%x add_status x%x\n",
19035                                 shdr_status, shdr_add_status);
19036                 if (phba->fcf.fcf_flag & FCF_ACVL_DISC) {
19037                         spin_lock_irq(&phba->hbalock);
19038                         phba->fcf.fcf_flag &= ~FCF_ACVL_DISC;
19039                         spin_unlock_irq(&phba->hbalock);
19040                         /*
19041                          * CVL event triggered FCF rediscover request failed,
19042                          * last resort to re-try current registered FCF entry.
19043                          */
19044                         lpfc_retry_pport_discovery(phba);
19045                 } else {
19046                         spin_lock_irq(&phba->hbalock);
19047                         phba->fcf.fcf_flag &= ~FCF_DEAD_DISC;
19048                         spin_unlock_irq(&phba->hbalock);
19049                         /*
19050                          * DEAD FCF event triggered FCF rediscover request
19051                          * failed, last resort to fail over as a link down
19052                          * to FCF registration.
19053                          */
19054                         lpfc_sli4_fcf_dead_failthrough(phba);
19055                 }
19056         } else {
19057                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
19058                                 "2775 Start FCF rediscover quiescent timer\n");
19059                 /*
19060                  * Start FCF rediscovery wait timer for pending FCF
19061                  * before rescan FCF record table.
19062                  */
19063                 lpfc_fcf_redisc_wait_start_timer(phba);
19064         }
19065 
19066         mempool_free(mbox, phba->mbox_mem_pool);
19067 }
19068 
19069 /**
19070  * lpfc_sli4_redisc_fcf_table - Request to rediscover entire FCF table by port.
19071  * @phba: pointer to lpfc hba data structure.
19072  *
19073  * This routine is invoked to request for rediscovery of the entire FCF table
19074  * by the port.
19075  **/
19076 int
19077 lpfc_sli4_redisc_fcf_table(struct lpfc_hba *phba)
19078 {
19079         LPFC_MBOXQ_t *mbox;
19080         struct lpfc_mbx_redisc_fcf_tbl *redisc_fcf;
19081         int rc, length;
19082 
19083         /* Cancel retry delay timers to all vports before FCF rediscover */
19084         lpfc_cancel_all_vport_retry_delay_timer(phba);
19085 
19086         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
19087         if (!mbox) {
19088                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
19089                                 "2745 Failed to allocate mbox for "
19090                                 "requesting FCF rediscover.\n");
19091                 return -ENOMEM;
19092         }
19093 
19094         length = (sizeof(struct lpfc_mbx_redisc_fcf_tbl) -
19095                   sizeof(struct lpfc_sli4_cfg_mhdr));
19096         lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
19097                          LPFC_MBOX_OPCODE_FCOE_REDISCOVER_FCF,
19098                          length, LPFC_SLI4_MBX_EMBED);
19099 
19100         redisc_fcf = &mbox->u.mqe.un.redisc_fcf_tbl;
19101         /* Set count to 0 for invalidating the entire FCF database */
19102         bf_set(lpfc_mbx_redisc_fcf_count, redisc_fcf, 0);
19103 
19104         /* Issue the mailbox command asynchronously */
19105         mbox->vport = phba->pport;
19106         mbox->mbox_cmpl = lpfc_mbx_cmpl_redisc_fcf_table;
19107         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
19108 
19109         if (rc == MBX_NOT_FINISHED) {
19110                 mempool_free(mbox, phba->mbox_mem_pool);
19111                 return -EIO;
19112         }
19113         return 0;
19114 }
19115 
19116 /**
19117  * lpfc_sli4_fcf_dead_failthrough - Failthrough routine to fcf dead event
19118  * @phba: pointer to lpfc hba data structure.
19119  *
19120  * This function is the failover routine as a last resort to the FCF DEAD
19121  * event when driver failed to perform fast FCF failover.
19122  **/
19123 void
19124 lpfc_sli4_fcf_dead_failthrough(struct lpfc_hba *phba)
19125 {
19126         uint32_t link_state;
19127 
19128         /*
19129          * Last resort as FCF DEAD event failover will treat this as
19130          * a link down, but save the link state because we don't want
19131          * it to be changed to Link Down unless it is already down.
19132          */
19133         link_state = phba->link_state;
19134         lpfc_linkdown(phba);
19135         phba->link_state = link_state;
19136 
19137         /* Unregister FCF if no devices connected to it */
19138         lpfc_unregister_unused_fcf(phba);
19139 }
19140 
19141 /**
19142  * lpfc_sli_get_config_region23 - Get sli3 port region 23 data.
19143  * @phba: pointer to lpfc hba data structure.
19144  * @rgn23_data: pointer to configure region 23 data.
19145  *
19146  * This function gets SLI3 port configure region 23 data through memory dump
19147  * mailbox command. When it successfully retrieves data, the size of the data
19148  * will be returned, otherwise, 0 will be returned.
19149  **/
19150 static uint32_t
19151 lpfc_sli_get_config_region23(struct lpfc_hba *phba, char *rgn23_data)
19152 {
19153         LPFC_MBOXQ_t *pmb = NULL;
19154         MAILBOX_t *mb;
19155         uint32_t offset = 0;
19156         int rc;
19157 
19158         if (!rgn23_data)
19159                 return 0;
19160 
19161         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
19162         if (!pmb) {
19163                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
19164                                 "2600 failed to allocate mailbox memory\n");
19165                 return 0;
19166         }
19167         mb = &pmb->u.mb;
19168 
19169         do {
19170                 lpfc_dump_mem(phba, pmb, offset, DMP_REGION_23);
19171                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
19172 
19173                 if (rc != MBX_SUCCESS) {
19174                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
19175                                         "2601 failed to read config "
19176                                         "region 23, rc 0x%x Status 0x%x\n",
19177                                         rc, mb->mbxStatus);
19178                         mb->un.varDmp.word_cnt = 0;
19179                 }
19180                 /*
19181                  * dump mem may return a zero when finished or we got a
19182                  * mailbox error, either way we are done.
19183                  */
19184                 if (mb->un.varDmp.word_cnt == 0)
19185                         break;
19186                 if (mb->un.varDmp.word_cnt > DMP_RGN23_SIZE - offset)
19187                         mb->un.varDmp.word_cnt = DMP_RGN23_SIZE - offset;
19188 
19189                 lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
19190                                        rgn23_data + offset,
19191                                        mb->un.varDmp.word_cnt);
19192                 offset += mb->un.varDmp.word_cnt;
19193         } while (mb->un.varDmp.word_cnt && offset < DMP_RGN23_SIZE);
19194 
19195         mempool_free(pmb, phba->mbox_mem_pool);
19196         return offset;
19197 }
19198 
19199 /**
19200  * lpfc_sli4_get_config_region23 - Get sli4 port region 23 data.
19201  * @phba: pointer to lpfc hba data structure.
19202  * @rgn23_data: pointer to configure region 23 data.
19203  *
19204  * This function gets SLI4 port configure region 23 data through memory dump
19205  * mailbox command. When it successfully retrieves data, the size of the data
19206  * will be returned, otherwise, 0 will be returned.
19207  **/
19208 static uint32_t
19209 lpfc_sli4_get_config_region23(struct lpfc_hba *phba, char *rgn23_data)
19210 {
19211         LPFC_MBOXQ_t *mboxq = NULL;
19212         struct lpfc_dmabuf *mp = NULL;
19213         struct lpfc_mqe *mqe;
19214         uint32_t data_length = 0;
19215         int rc;
19216 
19217         if (!rgn23_data)
19218                 return 0;
19219 
19220         mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
19221         if (!mboxq) {
19222                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
19223                                 "3105 failed to allocate mailbox memory\n");
19224                 return 0;
19225         }
19226 
19227         if (lpfc_sli4_dump_cfg_rg23(phba, mboxq))
19228                 goto out;
19229         mqe = &mboxq->u.mqe;
19230         mp = (struct lpfc_dmabuf *)mboxq->ctx_buf;
19231         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
19232         if (rc)
19233                 goto out;
19234         data_length = mqe->un.mb_words[5];
19235         if (data_length == 0)
19236                 goto out;
19237         if (data_length > DMP_RGN23_SIZE) {
19238                 data_length = 0;
19239                 goto out;
19240         }
19241         lpfc_sli_pcimem_bcopy((char *)mp->virt, rgn23_data, data_length);
19242 out:
19243         mempool_free(mboxq, phba->mbox_mem_pool);
19244         if (mp) {
19245                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
19246                 kfree(mp);
19247         }
19248         return data_length;
19249 }
19250 
19251 /**
19252  * lpfc_sli_read_link_ste - Read region 23 to decide if link is disabled.
19253  * @phba: pointer to lpfc hba data structure.
19254  *
19255  * This function read region 23 and parse TLV for port status to
19256  * decide if the user disaled the port. If the TLV indicates the
19257  * port is disabled, the hba_flag is set accordingly.
19258  **/
19259 void
19260 lpfc_sli_read_link_ste(struct lpfc_hba *phba)
19261 {
19262         uint8_t *rgn23_data = NULL;
19263         uint32_t if_type, data_size, sub_tlv_len, tlv_offset;
19264         uint32_t offset = 0;
19265 
19266         /* Get adapter Region 23 data */
19267         rgn23_data = kzalloc(DMP_RGN23_SIZE, GFP_KERNEL);
19268         if (!rgn23_data)
19269                 goto out;
19270 
19271         if (phba->sli_rev < LPFC_SLI_REV4)
19272                 data_size = lpfc_sli_get_config_region23(phba, rgn23_data);
19273         else {
19274                 if_type = bf_get(lpfc_sli_intf_if_type,
19275                                  &phba->sli4_hba.sli_intf);
19276                 if (if_type == LPFC_SLI_INTF_IF_TYPE_0)
19277                         goto out;
19278                 data_size = lpfc_sli4_get_config_region23(phba, rgn23_data);
19279         }
19280 
19281         if (!data_size)
19282                 goto out;
19283 
19284         /* Check the region signature first */
19285         if (memcmp(&rgn23_data[offset], LPFC_REGION23_SIGNATURE, 4)) {
19286                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
19287                         "2619 Config region 23 has bad signature\n");
19288                         goto out;
19289         }
19290         offset += 4;
19291 
19292         /* Check the data structure version */
19293         if (rgn23_data[offset] != LPFC_REGION23_VERSION) {
19294                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
19295                         "2620 Config region 23 has bad version\n");
19296                 goto out;
19297         }
19298         offset += 4;
19299 
19300         /* Parse TLV entries in the region */
19301         while (offset < data_size) {
19302                 if (rgn23_data[offset] == LPFC_REGION23_LAST_REC)
19303                         break;
19304                 /*
19305                  * If the TLV is not driver specific TLV or driver id is
19306                  * not linux driver id, skip the record.
19307                  */
19308                 if ((rgn23_data[offset] != DRIVER_SPECIFIC_TYPE) ||
19309                     (rgn23_data[offset + 2] != LINUX_DRIVER_ID) ||
19310                     (rgn23_data[offset + 3] != 0)) {
19311                         offset += rgn23_data[offset + 1] * 4 + 4;
19312                         continue;
19313                 }
19314 
19315                 /* Driver found a driver specific TLV in the config region */
19316                 sub_tlv_len = rgn23_data[offset + 1] * 4;
19317                 offset += 4;
19318                 tlv_offset = 0;
19319 
19320                 /*
19321                  * Search for configured port state sub-TLV.
19322                  */
19323                 while ((offset < data_size) &&
19324                         (tlv_offset < sub_tlv_len)) {
19325                         if (rgn23_data[offset] == LPFC_REGION23_LAST_REC) {
19326                                 offset += 4;
19327                                 tlv_offset += 4;
19328                                 break;
19329                         }
19330                         if (rgn23_data[offset] != PORT_STE_TYPE) {
19331                                 offset += rgn23_data[offset + 1] * 4 + 4;
19332                                 tlv_offset += rgn23_data[offset + 1] * 4 + 4;
19333                                 continue;
19334                         }
19335 
19336                         /* This HBA contains PORT_STE configured */
19337                         if (!rgn23_data[offset + 2])
19338                                 phba->hba_flag |= LINK_DISABLED;
19339 
19340                         goto out;
19341                 }
19342         }
19343 
19344 out:
19345         kfree(rgn23_data);
19346         return;
19347 }
19348 
19349 /**
19350  * lpfc_wr_object - write an object to the firmware
19351  * @phba: HBA structure that indicates port to create a queue on.
19352  * @dmabuf_list: list of dmabufs to write to the port.
19353  * @size: the total byte value of the objects to write to the port.
19354  * @offset: the current offset to be used to start the transfer.
19355  *
19356  * This routine will create a wr_object mailbox command to send to the port.
19357  * the mailbox command will be constructed using the dma buffers described in
19358  * @dmabuf_list to create a list of BDEs. This routine will fill in as many
19359  * BDEs that the imbedded mailbox can support. The @offset variable will be
19360  * used to indicate the starting offset of the transfer and will also return
19361  * the offset after the write object mailbox has completed. @size is used to
19362  * determine the end of the object and whether the eof bit should be set.
19363  *
19364  * Return 0 is successful and offset will contain the the new offset to use
19365  * for the next write.
19366  * Return negative value for error cases.
19367  **/
19368 int
19369 lpfc_wr_object(struct lpfc_hba *phba, struct list_head *dmabuf_list,
19370                uint32_t size, uint32_t *offset)
19371 {
19372         struct lpfc_mbx_wr_object *wr_object;
19373         LPFC_MBOXQ_t *mbox;
19374         int rc = 0, i = 0;
19375         uint32_t shdr_status, shdr_add_status, shdr_change_status;
19376         uint32_t mbox_tmo;
19377         struct lpfc_dmabuf *dmabuf;
19378         uint32_t written = 0;
19379         bool check_change_status = false;
19380 
19381         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
19382         if (!mbox)
19383                 return -ENOMEM;
19384 
19385         lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
19386                         LPFC_MBOX_OPCODE_WRITE_OBJECT,
19387                         sizeof(struct lpfc_mbx_wr_object) -
19388                         sizeof(struct lpfc_sli4_cfg_mhdr), LPFC_SLI4_MBX_EMBED);
19389 
19390         wr_object = (struct lpfc_mbx_wr_object *)&mbox->u.mqe.un.wr_object;
19391         wr_object->u.request.write_offset = *offset;
19392         sprintf((uint8_t *)wr_object->u.request.object_name, "/");
19393         wr_object->u.request.object_name[0] =
19394                 cpu_to_le32(wr_object->u.request.object_name[0]);
19395         bf_set(lpfc_wr_object_eof, &wr_object->u.request, 0);
19396         list_for_each_entry(dmabuf, dmabuf_list, list) {
19397                 if (i >= LPFC_MBX_WR_CONFIG_MAX_BDE || written >= size)
19398                         break;
19399                 wr_object->u.request.bde[i].addrLow = putPaddrLow(dmabuf->phys);
19400                 wr_object->u.request.bde[i].addrHigh =
19401                         putPaddrHigh(dmabuf->phys);
19402                 if (written + SLI4_PAGE_SIZE >= size) {
19403                         wr_object->u.request.bde[i].tus.f.bdeSize =
19404                                 (size - written);
19405                         written += (size - written);
19406                         bf_set(lpfc_wr_object_eof, &wr_object->u.request, 1);
19407                         bf_set(lpfc_wr_object_eas, &wr_object->u.request, 1);
19408                         check_change_status = true;
19409                 } else {
19410                         wr_object->u.request.bde[i].tus.f.bdeSize =
19411                                 SLI4_PAGE_SIZE;
19412                         written += SLI4_PAGE_SIZE;
19413                 }
19414                 i++;
19415         }
19416         wr_object->u.request.bde_count = i;
19417         bf_set(lpfc_wr_object_write_length, &wr_object->u.request, written);
19418         if (!phba->sli4_hba.intr_enable)
19419                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
19420         else {
19421                 mbox_tmo = lpfc_mbox_tmo_val(phba, mbox);
19422                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo);
19423         }
19424         /* The IOCTL status is embedded in the mailbox subheader. */
19425         shdr_status = bf_get(lpfc_mbox_hdr_status,
19426                              &wr_object->header.cfg_shdr.response);
19427         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status,
19428                                  &wr_object->header.cfg_shdr.response);
19429         if (check_change_status) {
19430                 shdr_change_status = bf_get(lpfc_wr_object_change_status,
19431                                             &wr_object->u.response);
19432                 switch (shdr_change_status) {
19433                 case (LPFC_CHANGE_STATUS_PHYS_DEV_RESET):
19434                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
19435                                         "3198 Firmware write complete: System "
19436                                         "reboot required to instantiate\n");
19437                         break;
19438                 case (LPFC_CHANGE_STATUS_FW_RESET):
19439                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
19440                                         "3199 Firmware write complete: Firmware"
19441                                         " reset required to instantiate\n");
19442                         break;
19443                 case (LPFC_CHANGE_STATUS_PORT_MIGRATION):
19444                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
19445                                         "3200 Firmware write complete: Port "
19446                                         "Migration or PCI Reset required to "
19447                                         "instantiate\n");
19448                         break;
19449                 case (LPFC_CHANGE_STATUS_PCI_RESET):
19450                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
19451                                         "3201 Firmware write complete: PCI "
19452                                         "Reset required to instantiate\n");
19453                         break;
19454                 default:
19455                         break;
19456                 }
19457         }
19458         if (rc != MBX_TIMEOUT)
19459                 mempool_free(mbox, phba->mbox_mem_pool);
19460         if (shdr_status || shdr_add_status || rc) {
19461                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
19462                                 "3025 Write Object mailbox failed with "
19463                                 "status x%x add_status x%x, mbx status x%x\n",
19464                                 shdr_status, shdr_add_status, rc);
19465                 rc = -ENXIO;
19466                 *offset = shdr_add_status;
19467         } else
19468                 *offset += wr_object->u.response.actual_write_length;
19469         return rc;
19470 }
19471 
19472 /**
19473  * lpfc_cleanup_pending_mbox - Free up vport discovery mailbox commands.
19474  * @vport: pointer to vport data structure.
19475  *
19476  * This function iterate through the mailboxq and clean up all REG_LOGIN
19477  * and REG_VPI mailbox commands associated with the vport. This function
19478  * is called when driver want to restart discovery of the vport due to
19479  * a Clear Virtual Link event.
19480  **/
19481 void
19482 lpfc_cleanup_pending_mbox(struct lpfc_vport *vport)
19483 {
19484         struct lpfc_hba *phba = vport->phba;
19485         LPFC_MBOXQ_t *mb, *nextmb;
19486         struct lpfc_dmabuf *mp;
19487         struct lpfc_nodelist *ndlp;
19488         struct lpfc_nodelist *act_mbx_ndlp = NULL;
19489         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
19490         LIST_HEAD(mbox_cmd_list);
19491         uint8_t restart_loop;
19492 
19493         /* Clean up internally queued mailbox commands with the vport */
19494         spin_lock_irq(&phba->hbalock);
19495         list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
19496                 if (mb->vport != vport)
19497                         continue;
19498 
19499                 if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) &&
19500                         (mb->u.mb.mbxCommand != MBX_REG_VPI))
19501                         continue;
19502 
19503                 list_del(&mb->list);
19504                 list_add_tail(&mb->list, &mbox_cmd_list);
19505         }
19506         /* Clean up active mailbox command with the vport */
19507         mb = phba->sli.mbox_active;
19508         if (mb && (mb->vport == vport)) {
19509                 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) ||
19510                         (mb->u.mb.mbxCommand == MBX_REG_VPI))
19511                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
19512                 if (mb->u.mb.mbxCommand == MBX_REG_LOGIN64) {
19513                         act_mbx_ndlp = (struct lpfc_nodelist *)mb->ctx_ndlp;
19514                         /* Put reference count for delayed processing */
19515                         act_mbx_ndlp = lpfc_nlp_get(act_mbx_ndlp);
19516                         /* Unregister the RPI when mailbox complete */
19517                         mb->mbox_flag |= LPFC_MBX_IMED_UNREG;
19518                 }
19519         }
19520         /* Cleanup any mailbox completions which are not yet processed */
19521         do {
19522                 restart_loop = 0;
19523                 list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) {
19524                         /*
19525                          * If this mailox is already processed or it is
19526                          * for another vport ignore it.
19527                          */
19528                         if ((mb->vport != vport) ||
19529                                 (mb->mbox_flag & LPFC_MBX_IMED_UNREG))
19530                                 continue;
19531 
19532                         if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) &&
19533                                 (mb->u.mb.mbxCommand != MBX_REG_VPI))
19534                                 continue;
19535 
19536                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
19537                         if (mb->u.mb.mbxCommand == MBX_REG_LOGIN64) {
19538                                 ndlp = (struct lpfc_nodelist *)mb->ctx_ndlp;
19539                                 /* Unregister the RPI when mailbox complete */
19540                                 mb->mbox_flag |= LPFC_MBX_IMED_UNREG;
19541                                 restart_loop = 1;
19542                                 spin_unlock_irq(&phba->hbalock);
19543                                 spin_lock(shost->host_lock);
19544                                 ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL;
19545                                 spin_unlock(shost->host_lock);
19546                                 spin_lock_irq(&phba->hbalock);
19547                                 break;
19548                         }
19549                 }
19550         } while (restart_loop);
19551 
19552         spin_unlock_irq(&phba->hbalock);
19553 
19554         /* Release the cleaned-up mailbox commands */
19555         while (!list_empty(&mbox_cmd_list)) {
19556                 list_remove_head(&mbox_cmd_list, mb, LPFC_MBOXQ_t, list);
19557                 if (mb->u.mb.mbxCommand == MBX_REG_LOGIN64) {
19558                         mp = (struct lpfc_dmabuf *)(mb->ctx_buf);
19559                         if (mp) {
19560                                 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
19561                                 kfree(mp);
19562                         }
19563                         mb->ctx_buf = NULL;
19564                         ndlp = (struct lpfc_nodelist *)mb->ctx_ndlp;
19565                         mb->ctx_ndlp = NULL;
19566                         if (ndlp) {
19567                                 spin_lock(shost->host_lock);
19568                                 ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL;
19569                                 spin_unlock(shost->host_lock);
19570                                 lpfc_nlp_put(ndlp);
19571                         }
19572                 }
19573                 mempool_free(mb, phba->mbox_mem_pool);
19574         }
19575 
19576         /* Release the ndlp with the cleaned-up active mailbox command */
19577         if (act_mbx_ndlp) {
19578                 spin_lock(shost->host_lock);
19579                 act_mbx_ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL;
19580                 spin_unlock(shost->host_lock);
19581                 lpfc_nlp_put(act_mbx_ndlp);
19582         }
19583 }
19584 
19585 /**
19586  * lpfc_drain_txq - Drain the txq
19587  * @phba: Pointer to HBA context object.
19588  *
19589  * This function attempt to submit IOCBs on the txq
19590  * to the adapter.  For SLI4 adapters, the txq contains
19591  * ELS IOCBs that have been deferred because the there
19592  * are no SGLs.  This congestion can occur with large
19593  * vport counts during node discovery.
19594  **/
19595 
19596 uint32_t
19597 lpfc_drain_txq(struct lpfc_hba *phba)
19598 {
19599         LIST_HEAD(completions);
19600         struct lpfc_sli_ring *pring;
19601         struct lpfc_iocbq *piocbq = NULL;
19602         unsigned long iflags = 0;
19603         char *fail_msg = NULL;
19604         struct lpfc_sglq *sglq;
19605         union lpfc_wqe128 wqe;
19606         uint32_t txq_cnt = 0;
19607         struct lpfc_queue *wq;
19608 
19609         if (phba->link_flag & LS_MDS_LOOPBACK) {
19610                 /* MDS WQE are posted only to first WQ*/
19611                 wq = phba->sli4_hba.hdwq[0].io_wq;
19612                 if (unlikely(!wq))
19613                         return 0;
19614                 pring = wq->pring;
19615         } else {
19616                 wq = phba->sli4_hba.els_wq;
19617                 if (unlikely(!wq))
19618                         return 0;
19619                 pring = lpfc_phba_elsring(phba);
19620         }
19621 
19622         if (unlikely(!pring) || list_empty(&pring->txq))
19623                 return 0;
19624 
19625         spin_lock_irqsave(&pring->ring_lock, iflags);
19626         list_for_each_entry(piocbq, &pring->txq, list) {
19627                 txq_cnt++;
19628         }
19629 
19630         if (txq_cnt > pring->txq_max)
19631                 pring->txq_max = txq_cnt;
19632 
19633         spin_unlock_irqrestore(&pring->ring_lock, iflags);
19634 
19635         while (!list_empty(&pring->txq)) {
19636                 spin_lock_irqsave(&pring->ring_lock, iflags);
19637 
19638                 piocbq = lpfc_sli_ringtx_get(phba, pring);
19639                 if (!piocbq) {
19640                         spin_unlock_irqrestore(&pring->ring_lock, iflags);
19641                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
19642                                 "2823 txq empty and txq_cnt is %d\n ",
19643                                 txq_cnt);
19644                         break;
19645                 }
19646                 sglq = __lpfc_sli_get_els_sglq(phba, piocbq);
19647                 if (!sglq) {
19648                         __lpfc_sli_ringtx_put(phba, pring, piocbq);
19649                         spin_unlock_irqrestore(&pring->ring_lock, iflags);
19650                         break;
19651                 }
19652                 txq_cnt--;
19653 
19654                 /* The xri and iocb resources secured,
19655                  * attempt to issue request
19656                  */
19657                 piocbq->sli4_lxritag = sglq->sli4_lxritag;
19658                 piocbq->sli4_xritag = sglq->sli4_xritag;
19659                 if (NO_XRI == lpfc_sli4_bpl2sgl(phba, piocbq, sglq))
19660                         fail_msg = "to convert bpl to sgl";
19661                 else if (lpfc_sli4_iocb2wqe(phba, piocbq, &wqe))
19662                         fail_msg = "to convert iocb to wqe";
19663                 else if (lpfc_sli4_wq_put(wq, &wqe))
19664                         fail_msg = " - Wq is full";
19665                 else
19666                         lpfc_sli_ringtxcmpl_put(phba, pring, piocbq);
19667 
19668                 if (fail_msg) {
19669                         /* Failed means we can't issue and need to cancel */
19670                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
19671                                         "2822 IOCB failed %s iotag 0x%x "
19672                                         "xri 0x%x\n",
19673                                         fail_msg,
19674                                         piocbq->iotag, piocbq->sli4_xritag);
19675                         list_add_tail(&piocbq->list, &completions);
19676                 }
19677                 spin_unlock_irqrestore(&pring->ring_lock, iflags);
19678         }
19679 
19680         /* Cancel all the IOCBs that cannot be issued */
19681         lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
19682                                 IOERR_SLI_ABORTED);
19683 
19684         return txq_cnt;
19685 }
19686 
19687 /**
19688  * lpfc_wqe_bpl2sgl - Convert the bpl/bde to a sgl.
19689  * @phba: Pointer to HBA context object.
19690  * @pwqe: Pointer to command WQE.
19691  * @sglq: Pointer to the scatter gather queue object.
19692  *
19693  * This routine converts the bpl or bde that is in the WQE
19694  * to a sgl list for the sli4 hardware. The physical address
19695  * of the bpl/bde is converted back to a virtual address.
19696  * If the WQE contains a BPL then the list of BDE's is
19697  * converted to sli4_sge's. If the WQE contains a single
19698  * BDE then it is converted to a single sli_sge.
19699  * The WQE is still in cpu endianness so the contents of
19700  * the bpl can be used without byte swapping.
19701  *
19702  * Returns valid XRI = Success, NO_XRI = Failure.
19703  */
19704 static uint16_t
19705 lpfc_wqe_bpl2sgl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeq,
19706                  struct lpfc_sglq *sglq)
19707 {
19708         uint16_t xritag = NO_XRI;
19709         struct ulp_bde64 *bpl = NULL;
19710         struct ulp_bde64 bde;
19711         struct sli4_sge *sgl  = NULL;
19712         struct lpfc_dmabuf *dmabuf;
19713         union lpfc_wqe128 *wqe;
19714         int numBdes = 0;
19715         int i = 0;
19716         uint32_t offset = 0; /* accumulated offset in the sg request list */
19717         int inbound = 0; /* number of sg reply entries inbound from firmware */
19718         uint32_t cmd;
19719 
19720         if (!pwqeq || !sglq)
19721                 return xritag;
19722 
19723         sgl  = (struct sli4_sge *)sglq->sgl;
19724         wqe = &pwqeq->wqe;
19725         pwqeq->iocb.ulpIoTag = pwqeq->iotag;
19726 
19727         cmd = bf_get(wqe_cmnd, &wqe->generic.wqe_com);
19728         if (cmd == CMD_XMIT_BLS_RSP64_WQE)
19729                 return sglq->sli4_xritag;
19730         numBdes = pwqeq->rsvd2;
19731         if (numBdes) {
19732                 /* The addrHigh and addrLow fields within the WQE
19733                  * have not been byteswapped yet so there is no
19734                  * need to swap them back.
19735                  */
19736                 if (pwqeq->context3)
19737                         dmabuf = (struct lpfc_dmabuf *)pwqeq->context3;
19738                 else
19739                         return xritag;
19740 
19741                 bpl  = (struct ulp_bde64 *)dmabuf->virt;
19742                 if (!bpl)
19743                         return xritag;
19744 
19745                 for (i = 0; i < numBdes; i++) {
19746                         /* Should already be byte swapped. */
19747                         sgl->addr_hi = bpl->addrHigh;
19748                         sgl->addr_lo = bpl->addrLow;
19749 
19750                         sgl->word2 = le32_to_cpu(sgl->word2);
19751                         if ((i+1) == numBdes)
19752                                 bf_set(lpfc_sli4_sge_last, sgl, 1);
19753                         else
19754                                 bf_set(lpfc_sli4_sge_last, sgl, 0);
19755                         /* swap the size field back to the cpu so we
19756                          * can assign it to the sgl.
19757                          */
19758                         bde.tus.w = le32_to_cpu(bpl->tus.w);
19759                         sgl->sge_len = cpu_to_le32(bde.tus.f.bdeSize);
19760                         /* The offsets in the sgl need to be accumulated
19761                          * separately for the request and reply lists.
19762                          * The request is always first, the reply follows.
19763                          */
19764                         switch (cmd) {
19765                         case CMD_GEN_REQUEST64_WQE:
19766                                 /* add up the reply sg entries */
19767                                 if (bpl->tus.f.bdeFlags == BUFF_TYPE_BDE_64I)
19768                                         inbound++;
19769                                 /* first inbound? reset the offset */
19770                                 if (inbound == 1)
19771                                         offset = 0;
19772                                 bf_set(lpfc_sli4_sge_offset, sgl, offset);
19773                                 bf_set(lpfc_sli4_sge_type, sgl,
19774                                         LPFC_SGE_TYPE_DATA);
19775                                 offset += bde.tus.f.bdeSize;
19776                                 break;
19777                         case CMD_FCP_TRSP64_WQE:
19778                                 bf_set(lpfc_sli4_sge_offset, sgl, 0);
19779                                 bf_set(lpfc_sli4_sge_type, sgl,
19780                                         LPFC_SGE_TYPE_DATA);
19781                                 break;
19782                         case CMD_FCP_TSEND64_WQE:
19783                         case CMD_FCP_TRECEIVE64_WQE:
19784                                 bf_set(lpfc_sli4_sge_type, sgl,
19785                                         bpl->tus.f.bdeFlags);
19786                                 if (i < 3)
19787                                         offset = 0;
19788                                 else
19789                                         offset += bde.tus.f.bdeSize;
19790                                 bf_set(lpfc_sli4_sge_offset, sgl, offset);
19791                                 break;
19792                         }
19793                         sgl->word2 = cpu_to_le32(sgl->word2);
19794                         bpl++;
19795                         sgl++;
19796                 }
19797         } else if (wqe->gen_req.bde.tus.f.bdeFlags == BUFF_TYPE_BDE_64) {
19798                 /* The addrHigh and addrLow fields of the BDE have not
19799                  * been byteswapped yet so they need to be swapped
19800                  * before putting them in the sgl.
19801                  */
19802                 sgl->addr_hi = cpu_to_le32(wqe->gen_req.bde.addrHigh);
19803                 sgl->addr_lo = cpu_to_le32(wqe->gen_req.bde.addrLow);
19804                 sgl->word2 = le32_to_cpu(sgl->word2);
19805                 bf_set(lpfc_sli4_sge_last, sgl, 1);
19806                 sgl->word2 = cpu_to_le32(sgl->word2);
19807                 sgl->sge_len = cpu_to_le32(wqe->gen_req.bde.tus.f.bdeSize);
19808         }
19809         return sglq->sli4_xritag;
19810 }
19811 
19812 /**
19813  * lpfc_sli4_issue_wqe - Issue an SLI4 Work Queue Entry (WQE)
19814  * @phba: Pointer to HBA context object.
19815  * @ring_number: Base sli ring number
19816  * @pwqe: Pointer to command WQE.
19817  **/
19818 int
19819 lpfc_sli4_issue_wqe(struct lpfc_hba *phba, struct lpfc_sli4_hdw_queue *qp,
19820                     struct lpfc_iocbq *pwqe)
19821 {
19822         union lpfc_wqe128 *wqe = &pwqe->wqe;
19823         struct lpfc_nvmet_rcv_ctx *ctxp;
19824         struct lpfc_queue *wq;
19825         struct lpfc_sglq *sglq;
19826         struct lpfc_sli_ring *pring;
19827         unsigned long iflags;
19828         uint32_t ret = 0;
19829 
19830         /* NVME_LS and NVME_LS ABTS requests. */
19831         if (pwqe->iocb_flag & LPFC_IO_NVME_LS) {
19832                 pring =  phba->sli4_hba.nvmels_wq->pring;
19833                 lpfc_qp_spin_lock_irqsave(&pring->ring_lock, iflags,
19834                                           qp, wq_access);
19835                 sglq = __lpfc_sli_get_els_sglq(phba, pwqe);
19836                 if (!sglq) {
19837                         spin_unlock_irqrestore(&pring->ring_lock, iflags);
19838                         return WQE_BUSY;
19839                 }
19840                 pwqe->sli4_lxritag = sglq->sli4_lxritag;
19841                 pwqe->sli4_xritag = sglq->sli4_xritag;
19842                 if (lpfc_wqe_bpl2sgl(phba, pwqe, sglq) == NO_XRI) {
19843                         spin_unlock_irqrestore(&pring->ring_lock, iflags);
19844                         return WQE_ERROR;
19845                 }
19846                 bf_set(wqe_xri_tag, &pwqe->wqe.xmit_bls_rsp.wqe_com,
19847                        pwqe->sli4_xritag);
19848                 ret = lpfc_sli4_wq_put(phba->sli4_hba.nvmels_wq, wqe);
19849                 if (ret) {
19850                         spin_unlock_irqrestore(&pring->ring_lock, iflags);
19851                         return ret;
19852                 }
19853 
19854                 lpfc_sli_ringtxcmpl_put(phba, pring, pwqe);
19855                 spin_unlock_irqrestore(&pring->ring_lock, iflags);
19856 
19857                 lpfc_sli4_poll_eq(qp->hba_eq, LPFC_POLL_FASTPATH);
19858                 return 0;
19859         }
19860 
19861         /* NVME_FCREQ and NVME_ABTS requests */
19862         if (pwqe->iocb_flag & LPFC_IO_NVME) {
19863                 /* Get the IO distribution (hba_wqidx) for WQ assignment. */
19864                 wq = qp->io_wq;
19865                 pring = wq->pring;
19866 
19867                 bf_set(wqe_cqid, &wqe->generic.wqe_com, qp->io_cq_map);
19868 
19869                 lpfc_qp_spin_lock_irqsave(&pring->ring_lock, iflags,
19870                                           qp, wq_access);
19871                 ret = lpfc_sli4_wq_put(wq, wqe);
19872                 if (ret) {
19873                         spin_unlock_irqrestore(&pring->ring_lock, iflags);
19874                         return ret;
19875                 }
19876                 lpfc_sli_ringtxcmpl_put(phba, pring, pwqe);
19877                 spin_unlock_irqrestore(&pring->ring_lock, iflags);
19878 
19879                 lpfc_sli4_poll_eq(qp->hba_eq, LPFC_POLL_FASTPATH);
19880                 return 0;
19881         }
19882 
19883         /* NVMET requests */
19884         if (pwqe->iocb_flag & LPFC_IO_NVMET) {
19885                 /* Get the IO distribution (hba_wqidx) for WQ assignment. */
19886                 wq = qp->io_wq;
19887                 pring = wq->pring;
19888 
19889                 ctxp = pwqe->context2;
19890                 sglq = ctxp->ctxbuf->sglq;
19891                 if (pwqe->sli4_xritag ==  NO_XRI) {
19892                         pwqe->sli4_lxritag = sglq->sli4_lxritag;
19893                         pwqe->sli4_xritag = sglq->sli4_xritag;
19894                 }
19895                 bf_set(wqe_xri_tag, &pwqe->wqe.xmit_bls_rsp.wqe_com,
19896                        pwqe->sli4_xritag);
19897                 bf_set(wqe_cqid, &wqe->generic.wqe_com, qp->io_cq_map);
19898 
19899                 lpfc_qp_spin_lock_irqsave(&pring->ring_lock, iflags,
19900                                           qp, wq_access);
19901                 ret = lpfc_sli4_wq_put(wq, wqe);
19902                 if (ret) {
19903                         spin_unlock_irqrestore(&pring->ring_lock, iflags);
19904                         return ret;
19905                 }
19906                 lpfc_sli_ringtxcmpl_put(phba, pring, pwqe);
19907                 spin_unlock_irqrestore(&pring->ring_lock, iflags);
19908 
19909                 lpfc_sli4_poll_eq(qp->hba_eq, LPFC_POLL_FASTPATH);
19910                 return 0;
19911         }
19912         return WQE_ERROR;
19913 }
19914 
19915 #ifdef LPFC_MXP_STAT
19916 /**
19917  * lpfc_snapshot_mxp - Snapshot pbl, pvt and busy count
19918  * @phba: pointer to lpfc hba data structure.
19919  * @hwqid: belong to which HWQ.
19920  *
19921  * The purpose of this routine is to take a snapshot of pbl, pvt and busy count
19922  * 15 seconds after a test case is running.
19923  *
19924  * The user should call lpfc_debugfs_multixripools_write before running a test
19925  * case to clear stat_snapshot_taken. Then the user starts a test case. During
19926  * test case is running, stat_snapshot_taken is incremented by 1 every time when
19927  * this routine is called from heartbeat timer. When stat_snapshot_taken is
19928  * equal to LPFC_MXP_SNAPSHOT_TAKEN, a snapshot is taken.
19929  **/
19930 void lpfc_snapshot_mxp(struct lpfc_hba *phba, u32 hwqid)
19931 {
19932         struct lpfc_sli4_hdw_queue *qp;
19933         struct lpfc_multixri_pool *multixri_pool;
19934         struct lpfc_pvt_pool *pvt_pool;
19935         struct lpfc_pbl_pool *pbl_pool;
19936         u32 txcmplq_cnt;
19937 
19938         qp = &phba->sli4_hba.hdwq[hwqid];
19939         multixri_pool = qp->p_multixri_pool;
19940         if (!multixri_pool)
19941                 return;
19942 
19943         if (multixri_pool->stat_snapshot_taken == LPFC_MXP_SNAPSHOT_TAKEN) {
19944                 pvt_pool = &qp->p_multixri_pool->pvt_pool;
19945                 pbl_pool = &qp->p_multixri_pool->pbl_pool;
19946                 txcmplq_cnt = qp->io_wq->pring->txcmplq_cnt;
19947 
19948                 multixri_pool->stat_pbl_count = pbl_pool->count;
19949                 multixri_pool->stat_pvt_count = pvt_pool->count;
19950                 multixri_pool->stat_busy_count = txcmplq_cnt;
19951         }
19952 
19953         multixri_pool->stat_snapshot_taken++;
19954 }
19955 #endif
19956 
19957 /**
19958  * lpfc_adjust_pvt_pool_count - Adjust private pool count
19959  * @phba: pointer to lpfc hba data structure.
19960  * @hwqid: belong to which HWQ.
19961  *
19962  * This routine moves some XRIs from private to public pool when private pool
19963  * is not busy.
19964  **/
19965 void lpfc_adjust_pvt_pool_count(struct lpfc_hba *phba, u32 hwqid)
19966 {
19967         struct lpfc_multixri_pool *multixri_pool;
19968         u32 io_req_count;
19969         u32 prev_io_req_count;
19970 
19971         multixri_pool = phba->sli4_hba.hdwq[hwqid].p_multixri_pool;
19972         if (!multixri_pool)
19973                 return;
19974         io_req_count = multixri_pool->io_req_count;
19975         prev_io_req_count = multixri_pool->prev_io_req_count;
19976 
19977         if (prev_io_req_count != io_req_count) {
19978                 /* Private pool is busy */
19979                 multixri_pool->prev_io_req_count = io_req_count;
19980         } else {
19981                 /* Private pool is not busy.
19982                  * Move XRIs from private to public pool.
19983                  */
19984                 lpfc_move_xri_pvt_to_pbl(phba, hwqid);
19985         }
19986 }
19987 
19988 /**
19989  * lpfc_adjust_high_watermark - Adjust high watermark
19990  * @phba: pointer to lpfc hba data structure.
19991  * @hwqid: belong to which HWQ.
19992  *
19993  * This routine sets high watermark as number of outstanding XRIs,
19994  * but make sure the new value is between xri_limit/2 and xri_limit.
19995  **/
19996 void lpfc_adjust_high_watermark(struct lpfc_hba *phba, u32 hwqid)
19997 {
19998         u32 new_watermark;
19999         u32 watermark_max;
20000         u32 watermark_min;
20001         u32 xri_limit;
20002         u32 txcmplq_cnt;
20003         u32 abts_io_bufs;
20004         struct lpfc_multixri_pool *multixri_pool;
20005         struct lpfc_sli4_hdw_queue *qp;
20006 
20007         qp = &phba->sli4_hba.hdwq[hwqid];
20008         multixri_pool = qp->p_multixri_pool;
20009         if (!multixri_pool)
20010                 return;
20011         xri_limit = multixri_pool->xri_limit;
20012 
20013         watermark_max = xri_limit;
20014         watermark_min = xri_limit / 2;
20015 
20016         txcmplq_cnt = qp->io_wq->pring->txcmplq_cnt;
20017         abts_io_bufs = qp->abts_scsi_io_bufs;
20018         abts_io_bufs += qp->abts_nvme_io_bufs;
20019 
20020         new_watermark = txcmplq_cnt + abts_io_bufs;
20021         new_watermark = min(watermark_max, new_watermark);
20022         new_watermark = max(watermark_min, new_watermark);
20023         multixri_pool->pvt_pool.high_watermark = new_watermark;
20024 
20025 #ifdef LPFC_MXP_STAT
20026         multixri_pool->stat_max_hwm = max(multixri_pool->stat_max_hwm,
20027                                           new_watermark);
20028 #endif
20029 }
20030 
20031 /**
20032  * lpfc_move_xri_pvt_to_pbl - Move some XRIs from private to public pool
20033  * @phba: pointer to lpfc hba data structure.
20034  * @hwqid: belong to which HWQ.
20035  *
20036  * This routine is called from hearbeat timer when pvt_pool is idle.
20037  * All free XRIs are moved from private to public pool on hwqid with 2 steps.
20038  * The first step moves (all - low_watermark) amount of XRIs.
20039  * The second step moves the rest of XRIs.
20040  **/
20041 void lpfc_move_xri_pvt_to_pbl(struct lpfc_hba *phba, u32 hwqid)
20042 {
20043         struct lpfc_pbl_pool *pbl_pool;
20044         struct lpfc_pvt_pool *pvt_pool;
20045         struct lpfc_sli4_hdw_queue *qp;
20046         struct lpfc_io_buf *lpfc_ncmd;
20047         struct lpfc_io_buf *lpfc_ncmd_next;
20048         unsigned long iflag;
20049         struct list_head tmp_list;
20050         u32 tmp_count;
20051 
20052         qp = &phba->sli4_hba.hdwq[hwqid];
20053         pbl_pool = &qp->p_multixri_pool->pbl_pool;
20054         pvt_pool = &qp->p_multixri_pool->pvt_pool;
20055         tmp_count = 0;
20056 
20057         lpfc_qp_spin_lock_irqsave(&pbl_pool->lock, iflag, qp, mv_to_pub_pool);
20058         lpfc_qp_spin_lock(&pvt_pool->lock, qp, mv_from_pvt_pool);
20059 
20060         if (pvt_pool->count > pvt_pool->low_watermark) {
20061                 /* Step 1: move (all - low_watermark) from pvt_pool
20062                  * to pbl_pool
20063                  */
20064 
20065                 /* Move low watermark of bufs from pvt_pool to tmp_list */
20066                 INIT_LIST_HEAD(&tmp_list);
20067                 list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
20068                                          &pvt_pool->list, list) {
20069                         list_move_tail(&lpfc_ncmd->list, &tmp_list);
20070                         tmp_count++;
20071                         if (tmp_count >= pvt_pool->low_watermark)
20072                                 break;
20073                 }
20074 
20075                 /* Move all bufs from pvt_pool to pbl_pool */
20076                 list_splice_init(&pvt_pool->list, &pbl_pool->list);
20077 
20078                 /* Move all bufs from tmp_list to pvt_pool */
20079                 list_splice(&tmp_list, &pvt_pool->list);
20080 
20081                 pbl_pool->count += (pvt_pool->count - tmp_count);
20082                 pvt_pool->count = tmp_count;
20083         } else {
20084                 /* Step 2: move the rest from pvt_pool to pbl_pool */
20085                 list_splice_init(&pvt_pool->list, &pbl_pool->list);
20086                 pbl_pool->count += pvt_pool->count;
20087                 pvt_pool->count = 0;
20088         }
20089 
20090         spin_unlock(&pvt_pool->lock);
20091         spin_unlock_irqrestore(&pbl_pool->lock, iflag);
20092 }
20093 
20094 /**
20095  * _lpfc_move_xri_pbl_to_pvt - Move some XRIs from public to private pool
20096  * @phba: pointer to lpfc hba data structure
20097  * @pbl_pool: specified public free XRI pool
20098  * @pvt_pool: specified private free XRI pool
20099  * @count: number of XRIs to move
20100  *
20101  * This routine tries to move some free common bufs from the specified pbl_pool
20102  * to the specified pvt_pool. It might move less than count XRIs if there's not
20103  * enough in public pool.
20104  *
20105  * Return:
20106  *   true - if XRIs are successfully moved from the specified pbl_pool to the
20107  *          specified pvt_pool
20108  *   false - if the specified pbl_pool is empty or locked by someone else
20109  **/
20110 static bool
20111 _lpfc_move_xri_pbl_to_pvt(struct lpfc_hba *phba, struct lpfc_sli4_hdw_queue *qp,
20112                           struct lpfc_pbl_pool *pbl_pool,
20113                           struct lpfc_pvt_pool *pvt_pool, u32 count)
20114 {
20115         struct lpfc_io_buf *lpfc_ncmd;
20116         struct lpfc_io_buf *lpfc_ncmd_next;
20117         unsigned long iflag;
20118         int ret;
20119 
20120         ret = spin_trylock_irqsave(&pbl_pool->lock, iflag);
20121         if (ret) {
20122                 if (pbl_pool->count) {
20123                         /* Move a batch of XRIs from public to private pool */
20124                         lpfc_qp_spin_lock(&pvt_pool->lock, qp, mv_to_pvt_pool);
20125                         list_for_each_entry_safe(lpfc_ncmd,
20126                                                  lpfc_ncmd_next,
20127                                                  &pbl_pool->list,
20128                                                  list) {
20129                                 list_move_tail(&lpfc_ncmd->list,
20130                                                &pvt_pool->list);
20131                                 pvt_pool->count++;
20132                                 pbl_pool->count--;
20133                                 count--;
20134                                 if (count == 0)
20135                                         break;
20136                         }
20137 
20138                         spin_unlock(&pvt_pool->lock);
20139                         spin_unlock_irqrestore(&pbl_pool->lock, iflag);
20140                         return true;
20141                 }
20142                 spin_unlock_irqrestore(&pbl_pool->lock, iflag);
20143         }
20144 
20145         return false;
20146 }
20147 
20148 /**
20149  * lpfc_move_xri_pbl_to_pvt - Move some XRIs from public to private pool
20150  * @phba: pointer to lpfc hba data structure.
20151  * @hwqid: belong to which HWQ.
20152  * @count: number of XRIs to move
20153  *
20154  * This routine tries to find some free common bufs in one of public pools with
20155  * Round Robin method. The search always starts from local hwqid, then the next
20156  * HWQ which was found last time (rrb_next_hwqid). Once a public pool is found,
20157  * a batch of free common bufs are moved to private pool on hwqid.
20158  * It might move less than count XRIs if there's not enough in public pool.
20159  **/
20160 void lpfc_move_xri_pbl_to_pvt(struct lpfc_hba *phba, u32 hwqid, u32 count)
20161 {
20162         struct lpfc_multixri_pool *multixri_pool;
20163         struct lpfc_multixri_pool *next_multixri_pool;
20164         struct lpfc_pvt_pool *pvt_pool;
20165         struct lpfc_pbl_pool *pbl_pool;
20166         struct lpfc_sli4_hdw_queue *qp;
20167         u32 next_hwqid;
20168         u32 hwq_count;
20169         int ret;
20170 
20171         qp = &phba->sli4_hba.hdwq[hwqid];
20172         multixri_pool = qp->p_multixri_pool;
20173         pvt_pool = &multixri_pool->pvt_pool;
20174         pbl_pool = &multixri_pool->pbl_pool;
20175 
20176         /* Check if local pbl_pool is available */
20177         ret = _lpfc_move_xri_pbl_to_pvt(phba, qp, pbl_pool, pvt_pool, count);
20178         if (ret) {
20179 #ifdef LPFC_MXP_STAT
20180                 multixri_pool->local_pbl_hit_count++;
20181 #endif
20182                 return;
20183         }
20184 
20185         hwq_count = phba->cfg_hdw_queue;
20186 
20187         /* Get the next hwqid which was found last time */
20188         next_hwqid = multixri_pool->rrb_next_hwqid;
20189 
20190         do {
20191                 /* Go to next hwq */
20192                 next_hwqid = (next_hwqid + 1) % hwq_count;
20193 
20194                 next_multixri_pool =
20195                         phba->sli4_hba.hdwq[next_hwqid].p_multixri_pool;
20196                 pbl_pool = &next_multixri_pool->pbl_pool;
20197 
20198                 /* Check if the public free xri pool is available */
20199                 ret = _lpfc_move_xri_pbl_to_pvt(
20200                         phba, qp, pbl_pool, pvt_pool, count);
20201 
20202                 /* Exit while-loop if success or all hwqid are checked */
20203         } while (!ret && next_hwqid != multixri_pool->rrb_next_hwqid);
20204 
20205         /* Starting point for the next time */
20206         multixri_pool->rrb_next_hwqid = next_hwqid;
20207 
20208         if (!ret) {
20209                 /* stats: all public pools are empty*/
20210                 multixri_pool->pbl_empty_count++;
20211         }
20212 
20213 #ifdef LPFC_MXP_STAT
20214         if (ret) {
20215                 if (next_hwqid == hwqid)
20216                         multixri_pool->local_pbl_hit_count++;
20217                 else
20218                         multixri_pool->other_pbl_hit_count++;
20219         }
20220 #endif
20221 }
20222 
20223 /**
20224  * lpfc_keep_pvt_pool_above_lowwm - Keep pvt_pool above low watermark
20225  * @phba: pointer to lpfc hba data structure.
20226  * @qp: belong to which HWQ.
20227  *
20228  * This routine get a batch of XRIs from pbl_pool if pvt_pool is less than
20229  * low watermark.
20230  **/
20231 void lpfc_keep_pvt_pool_above_lowwm(struct lpfc_hba *phba, u32 hwqid)
20232 {
20233         struct lpfc_multixri_pool *multixri_pool;
20234         struct lpfc_pvt_pool *pvt_pool;
20235 
20236         multixri_pool = phba->sli4_hba.hdwq[hwqid].p_multixri_pool;
20237         pvt_pool = &multixri_pool->pvt_pool;
20238 
20239         if (pvt_pool->count < pvt_pool->low_watermark)
20240                 lpfc_move_xri_pbl_to_pvt(phba, hwqid, XRI_BATCH);
20241 }
20242 
20243 /**
20244  * lpfc_release_io_buf - Return one IO buf back to free pool
20245  * @phba: pointer to lpfc hba data structure.
20246  * @lpfc_ncmd: IO buf to be returned.
20247  * @qp: belong to which HWQ.
20248  *
20249  * This routine returns one IO buf back to free pool. If this is an urgent IO,
20250  * the IO buf is returned to expedite pool. If cfg_xri_rebalancing==1,
20251  * the IO buf is returned to pbl_pool or pvt_pool based on watermark and
20252  * xri_limit.  If cfg_xri_rebalancing==0, the IO buf is returned to
20253  * lpfc_io_buf_list_put.
20254  **/
20255 void lpfc_release_io_buf(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_ncmd,
20256                          struct lpfc_sli4_hdw_queue *qp)
20257 {
20258         unsigned long iflag;
20259         struct lpfc_pbl_pool *pbl_pool;
20260         struct lpfc_pvt_pool *pvt_pool;
20261         struct lpfc_epd_pool *epd_pool;
20262         u32 txcmplq_cnt;
20263         u32 xri_owned;
20264         u32 xri_limit;
20265         u32 abts_io_bufs;
20266 
20267         /* MUST zero fields if buffer is reused by another protocol */
20268         lpfc_ncmd->nvmeCmd = NULL;
20269         lpfc_ncmd->cur_iocbq.wqe_cmpl = NULL;
20270         lpfc_ncmd->cur_iocbq.iocb_cmpl = NULL;
20271 
20272         if (phba->cfg_xpsgl && !phba->nvmet_support &&
20273             !list_empty(&lpfc_ncmd->dma_sgl_xtra_list))
20274                 lpfc_put_sgl_per_hdwq(phba, lpfc_ncmd);
20275 
20276         if (!list_empty(&lpfc_ncmd->dma_cmd_rsp_list))
20277                 lpfc_put_cmd_rsp_buf_per_hdwq(phba, lpfc_ncmd);
20278 
20279         if (phba->cfg_xri_rebalancing) {
20280                 if (lpfc_ncmd->expedite) {
20281                         /* Return to expedite pool */
20282                         epd_pool = &phba->epd_pool;
20283                         spin_lock_irqsave(&epd_pool->lock, iflag);
20284                         list_add_tail(&lpfc_ncmd->list, &epd_pool->list);
20285                         epd_pool->count++;
20286                         spin_unlock_irqrestore(&epd_pool->lock, iflag);
20287                         return;
20288                 }
20289 
20290                 /* Avoid invalid access if an IO sneaks in and is being rejected
20291                  * just _after_ xri pools are destroyed in lpfc_offline.
20292                  * Nothing much can be done at this point.
20293                  */
20294                 if (!qp->p_multixri_pool)
20295                         return;
20296 
20297                 pbl_pool = &qp->p_multixri_pool->pbl_pool;
20298                 pvt_pool = &qp->p_multixri_pool->pvt_pool;
20299 
20300                 txcmplq_cnt = qp->io_wq->pring->txcmplq_cnt;
20301                 abts_io_bufs = qp->abts_scsi_io_bufs;
20302                 abts_io_bufs += qp->abts_nvme_io_bufs;
20303 
20304                 xri_owned = pvt_pool->count + txcmplq_cnt + abts_io_bufs;
20305                 xri_limit = qp->p_multixri_pool->xri_limit;
20306 
20307 #ifdef LPFC_MXP_STAT
20308                 if (xri_owned <= xri_limit)
20309                         qp->p_multixri_pool->below_limit_count++;
20310                 else
20311                         qp->p_multixri_pool->above_limit_count++;
20312 #endif
20313 
20314                 /* XRI goes to either public or private free xri pool
20315                  *     based on watermark and xri_limit
20316                  */
20317                 if ((pvt_pool->count < pvt_pool->low_watermark) ||
20318                     (xri_owned < xri_limit &&
20319                      pvt_pool->count < pvt_pool->high_watermark)) {
20320                         lpfc_qp_spin_lock_irqsave(&pvt_pool->lock, iflag,
20321                                                   qp, free_pvt_pool);
20322                         list_add_tail(&lpfc_ncmd->list,
20323                                       &pvt_pool->list);
20324                         pvt_pool->count++;
20325                         spin_unlock_irqrestore(&pvt_pool->lock, iflag);
20326                 } else {
20327                         lpfc_qp_spin_lock_irqsave(&pbl_pool->lock, iflag,
20328                                                   qp, free_pub_pool);
20329                         list_add_tail(&lpfc_ncmd->list,
20330                                       &pbl_pool->list);
20331                         pbl_pool->count++;
20332                         spin_unlock_irqrestore(&pbl_pool->lock, iflag);
20333                 }
20334         } else {
20335                 lpfc_qp_spin_lock_irqsave(&qp->io_buf_list_put_lock, iflag,
20336                                           qp, free_xri);
20337                 list_add_tail(&lpfc_ncmd->list,
20338                               &qp->lpfc_io_buf_list_put);
20339                 qp->put_io_bufs++;
20340                 spin_unlock_irqrestore(&qp->io_buf_list_put_lock,
20341                                        iflag);
20342         }
20343 }
20344 
20345 /**
20346  * lpfc_get_io_buf_from_private_pool - Get one free IO buf from private pool
20347  * @phba: pointer to lpfc hba data structure.
20348  * @pvt_pool: pointer to private pool data structure.
20349  * @ndlp: pointer to lpfc nodelist data structure.
20350  *
20351  * This routine tries to get one free IO buf from private pool.
20352  *
20353  * Return:
20354  *   pointer to one free IO buf - if private pool is not empty
20355  *   NULL - if private pool is empty
20356  **/
20357 static struct lpfc_io_buf *
20358 lpfc_get_io_buf_from_private_pool(struct lpfc_hba *phba,
20359                                   struct lpfc_sli4_hdw_queue *qp,
20360                                   struct lpfc_pvt_pool *pvt_pool,
20361                                   struct lpfc_nodelist *ndlp)
20362 {
20363         struct lpfc_io_buf *lpfc_ncmd;
20364         struct lpfc_io_buf *lpfc_ncmd_next;
20365         unsigned long iflag;
20366 
20367         lpfc_qp_spin_lock_irqsave(&pvt_pool->lock, iflag, qp, alloc_pvt_pool);
20368         list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
20369                                  &pvt_pool->list, list) {
20370                 if (lpfc_test_rrq_active(
20371                         phba, ndlp, lpfc_ncmd->cur_iocbq.sli4_lxritag))
20372                         continue;
20373                 list_del(&lpfc_ncmd->list);
20374                 pvt_pool->count--;
20375                 spin_unlock_irqrestore(&pvt_pool->lock, iflag);
20376                 return lpfc_ncmd;
20377         }
20378         spin_unlock_irqrestore(&pvt_pool->lock, iflag);
20379 
20380         return NULL;
20381 }
20382 
20383 /**
20384  * lpfc_get_io_buf_from_expedite_pool - Get one free IO buf from expedite pool
20385  * @phba: pointer to lpfc hba data structure.
20386  *
20387  * This routine tries to get one free IO buf from expedite pool.
20388  *
20389  * Return:
20390  *   pointer to one free IO buf - if expedite pool is not empty
20391  *   NULL - if expedite pool is empty
20392  **/
20393 static struct lpfc_io_buf *
20394 lpfc_get_io_buf_from_expedite_pool(struct lpfc_hba *phba)
20395 {
20396         struct lpfc_io_buf *lpfc_ncmd;
20397         struct lpfc_io_buf *lpfc_ncmd_next;
20398         unsigned long iflag;
20399         struct lpfc_epd_pool *epd_pool;
20400 
20401         epd_pool = &phba->epd_pool;
20402         lpfc_ncmd = NULL;
20403 
20404         spin_lock_irqsave(&epd_pool->lock, iflag);
20405         if (epd_pool->count > 0) {
20406                 list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
20407                                          &epd_pool->list, list) {
20408                         list_del(&lpfc_ncmd->list);
20409                         epd_pool->count--;
20410                         break;
20411                 }
20412         }
20413         spin_unlock_irqrestore(&epd_pool->lock, iflag);
20414 
20415         return lpfc_ncmd;
20416 }
20417 
20418 /**
20419  * lpfc_get_io_buf_from_multixri_pools - Get one free IO bufs
20420  * @phba: pointer to lpfc hba data structure.
20421  * @ndlp: pointer to lpfc nodelist data structure.
20422  * @hwqid: belong to which HWQ
20423  * @expedite: 1 means this request is urgent.
20424  *
20425  * This routine will do the following actions and then return a pointer to
20426  * one free IO buf.
20427  *
20428  * 1. If private free xri count is empty, move some XRIs from public to
20429  *    private pool.
20430  * 2. Get one XRI from private free xri pool.
20431  * 3. If we fail to get one from pvt_pool and this is an expedite request,
20432  *    get one free xri from expedite pool.
20433  *
20434  * Note: ndlp is only used on SCSI side for RRQ testing.
20435  *       The caller should pass NULL for ndlp on NVME side.
20436  *
20437  * Return:
20438  *   pointer to one free IO buf - if private pool is not empty
20439  *   NULL - if private pool is empty
20440  **/
20441 static struct lpfc_io_buf *
20442 lpfc_get_io_buf_from_multixri_pools(struct lpfc_hba *phba,
20443                                     struct lpfc_nodelist *ndlp,
20444                                     int hwqid, int expedite)
20445 {
20446         struct lpfc_sli4_hdw_queue *qp;
20447         struct lpfc_multixri_pool *multixri_pool;
20448         struct lpfc_pvt_pool *pvt_pool;
20449         struct lpfc_io_buf *lpfc_ncmd;
20450 
20451         qp = &phba->sli4_hba.hdwq[hwqid];
20452         lpfc_ncmd = NULL;
20453         multixri_pool = qp->p_multixri_pool;
20454         pvt_pool = &multixri_pool->pvt_pool;
20455         multixri_pool->io_req_count++;
20456 
20457         /* If pvt_pool is empty, move some XRIs from public to private pool */
20458         if (pvt_pool->count == 0)
20459                 lpfc_move_xri_pbl_to_pvt(phba, hwqid, XRI_BATCH);
20460 
20461         /* Get one XRI from private free xri pool */
20462         lpfc_ncmd = lpfc_get_io_buf_from_private_pool(phba, qp, pvt_pool, ndlp);
20463 
20464         if (lpfc_ncmd) {
20465                 lpfc_ncmd->hdwq = qp;
20466                 lpfc_ncmd->hdwq_no = hwqid;
20467         } else if (expedite) {
20468                 /* If we fail to get one from pvt_pool and this is an expedite
20469                  * request, get one free xri from expedite pool.
20470                  */
20471                 lpfc_ncmd = lpfc_get_io_buf_from_expedite_pool(phba);
20472         }
20473 
20474         return lpfc_ncmd;
20475 }
20476 
20477 static inline struct lpfc_io_buf *
20478 lpfc_io_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp, int idx)
20479 {
20480         struct lpfc_sli4_hdw_queue *qp;
20481         struct lpfc_io_buf *lpfc_cmd, *lpfc_cmd_next;
20482 
20483         qp = &phba->sli4_hba.hdwq[idx];
20484         list_for_each_entry_safe(lpfc_cmd, lpfc_cmd_next,
20485                                  &qp->lpfc_io_buf_list_get, list) {
20486                 if (lpfc_test_rrq_active(phba, ndlp,
20487                                          lpfc_cmd->cur_iocbq.sli4_lxritag))
20488                         continue;
20489 
20490                 if (lpfc_cmd->flags & LPFC_SBUF_NOT_POSTED)
20491                         continue;
20492 
20493                 list_del_init(&lpfc_cmd->list);
20494                 qp->get_io_bufs--;
20495                 lpfc_cmd->hdwq = qp;
20496                 lpfc_cmd->hdwq_no = idx;
20497                 return lpfc_cmd;
20498         }
20499         return NULL;
20500 }
20501 
20502 /**
20503  * lpfc_get_io_buf - Get one IO buffer from free pool
20504  * @phba: The HBA for which this call is being executed.
20505  * @ndlp: pointer to lpfc nodelist data structure.
20506  * @hwqid: belong to which HWQ
20507  * @expedite: 1 means this request is urgent.
20508  *
20509  * This routine gets one IO buffer from free pool. If cfg_xri_rebalancing==1,
20510  * removes a IO buffer from multiXRI pools. If cfg_xri_rebalancing==0, removes
20511  * a IO buffer from head of @hdwq io_buf_list and returns to caller.
20512  *
20513  * Note: ndlp is only used on SCSI side for RRQ testing.
20514  *       The caller should pass NULL for ndlp on NVME side.
20515  *
20516  * Return codes:
20517  *   NULL - Error
20518  *   Pointer to lpfc_io_buf - Success
20519  **/
20520 struct lpfc_io_buf *lpfc_get_io_buf(struct lpfc_hba *phba,
20521                                     struct lpfc_nodelist *ndlp,
20522                                     u32 hwqid, int expedite)
20523 {
20524         struct lpfc_sli4_hdw_queue *qp;
20525         unsigned long iflag;
20526         struct lpfc_io_buf *lpfc_cmd;
20527 
20528         qp = &phba->sli4_hba.hdwq[hwqid];
20529         lpfc_cmd = NULL;
20530 
20531         if (phba->cfg_xri_rebalancing)
20532                 lpfc_cmd = lpfc_get_io_buf_from_multixri_pools(
20533                         phba, ndlp, hwqid, expedite);
20534         else {
20535                 lpfc_qp_spin_lock_irqsave(&qp->io_buf_list_get_lock, iflag,
20536                                           qp, alloc_xri_get);
20537                 if (qp->get_io_bufs > LPFC_NVME_EXPEDITE_XRICNT || expedite)
20538                         lpfc_cmd = lpfc_io_buf(phba, ndlp, hwqid);
20539                 if (!lpfc_cmd) {
20540                         lpfc_qp_spin_lock(&qp->io_buf_list_put_lock,
20541                                           qp, alloc_xri_put);
20542                         list_splice(&qp->lpfc_io_buf_list_put,
20543                                     &qp->lpfc_io_buf_list_get);
20544                         qp->get_io_bufs += qp->put_io_bufs;
20545                         INIT_LIST_HEAD(&qp->lpfc_io_buf_list_put);
20546                         qp->put_io_bufs = 0;
20547                         spin_unlock(&qp->io_buf_list_put_lock);
20548                         if (qp->get_io_bufs > LPFC_NVME_EXPEDITE_XRICNT ||
20549                             expedite)
20550                                 lpfc_cmd = lpfc_io_buf(phba, ndlp, hwqid);
20551                 }
20552                 spin_unlock_irqrestore(&qp->io_buf_list_get_lock, iflag);
20553         }
20554 
20555         return lpfc_cmd;
20556 }
20557 
20558 /**
20559  * lpfc_get_sgl_per_hdwq - Get one SGL chunk from hdwq's pool
20560  * @phba: The HBA for which this call is being executed.
20561  * @lpfc_buf: IO buf structure to append the SGL chunk
20562  *
20563  * This routine gets one SGL chunk buffer from hdwq's SGL chunk pool,
20564  * and will allocate an SGL chunk if the pool is empty.
20565  *
20566  * Return codes:
20567  *   NULL - Error
20568  *   Pointer to sli4_hybrid_sgl - Success
20569  **/
20570 struct sli4_hybrid_sgl *
20571 lpfc_get_sgl_per_hdwq(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_buf)
20572 {
20573         struct sli4_hybrid_sgl *list_entry = NULL;
20574         struct sli4_hybrid_sgl *tmp = NULL;
20575         struct sli4_hybrid_sgl *allocated_sgl = NULL;
20576         struct lpfc_sli4_hdw_queue *hdwq = lpfc_buf->hdwq;
20577         struct list_head *buf_list = &hdwq->sgl_list;
20578         unsigned long iflags;
20579 
20580         spin_lock_irqsave(&hdwq->hdwq_lock, iflags);
20581 
20582         if (likely(!list_empty(buf_list))) {
20583                 /* break off 1 chunk from the sgl_list */
20584                 list_for_each_entry_safe(list_entry, tmp,
20585                                          buf_list, list_node) {
20586                         list_move_tail(&list_entry->list_node,
20587                                        &lpfc_buf->dma_sgl_xtra_list);
20588                         break;
20589                 }
20590         } else {
20591                 /* allocate more */
20592                 spin_unlock_irqrestore(&hdwq->hdwq_lock, iflags);
20593                 tmp = kmalloc_node(sizeof(*tmp), GFP_ATOMIC,
20594                                    cpu_to_node(hdwq->io_wq->chann));
20595                 if (!tmp) {
20596                         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
20597                                         "8353 error kmalloc memory for HDWQ "
20598                                         "%d %s\n",
20599                                         lpfc_buf->hdwq_no, __func__);
20600                         return NULL;
20601                 }
20602 
20603                 tmp->dma_sgl = dma_pool_alloc(phba->lpfc_sg_dma_buf_pool,
20604                                               GFP_ATOMIC, &tmp->dma_phys_sgl);
20605                 if (!tmp->dma_sgl) {
20606                         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
20607                                         "8354 error pool_alloc memory for HDWQ "
20608                                         "%d %s\n",
20609                                         lpfc_buf->hdwq_no, __func__);
20610                         kfree(tmp);
20611                         return NULL;
20612                 }
20613 
20614                 spin_lock_irqsave(&hdwq->hdwq_lock, iflags);
20615                 list_add_tail(&tmp->list_node, &lpfc_buf->dma_sgl_xtra_list);
20616         }
20617 
20618         allocated_sgl = list_last_entry(&lpfc_buf->dma_sgl_xtra_list,
20619                                         struct sli4_hybrid_sgl,
20620                                         list_node);
20621 
20622         spin_unlock_irqrestore(&hdwq->hdwq_lock, iflags);
20623 
20624         return allocated_sgl;
20625 }
20626 
20627 /**
20628  * lpfc_put_sgl_per_hdwq - Put one SGL chunk into hdwq pool
20629  * @phba: The HBA for which this call is being executed.
20630  * @lpfc_buf: IO buf structure with the SGL chunk
20631  *
20632  * This routine puts one SGL chunk buffer into hdwq's SGL chunk pool.
20633  *
20634  * Return codes:
20635  *   0 - Success
20636  *   -EINVAL - Error
20637  **/
20638 int
20639 lpfc_put_sgl_per_hdwq(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_buf)
20640 {
20641         int rc = 0;
20642         struct sli4_hybrid_sgl *list_entry = NULL;
20643         struct sli4_hybrid_sgl *tmp = NULL;
20644         struct lpfc_sli4_hdw_queue *hdwq = lpfc_buf->hdwq;
20645         struct list_head *buf_list = &hdwq->sgl_list;
20646         unsigned long iflags;
20647 
20648         spin_lock_irqsave(&hdwq->hdwq_lock, iflags);
20649 
20650         if (likely(!list_empty(&lpfc_buf->dma_sgl_xtra_list))) {
20651                 list_for_each_entry_safe(list_entry, tmp,
20652                                          &lpfc_buf->dma_sgl_xtra_list,
20653                                          list_node) {
20654                         list_move_tail(&list_entry->list_node,
20655                                        buf_list);
20656                 }
20657         } else {
20658                 rc = -EINVAL;
20659         }
20660 
20661         spin_unlock_irqrestore(&hdwq->hdwq_lock, iflags);
20662         return rc;
20663 }
20664 
20665 /**
20666  * lpfc_free_sgl_per_hdwq - Free all SGL chunks of hdwq pool
20667  * @phba: phba object
20668  * @hdwq: hdwq to cleanup sgl buff resources on
20669  *
20670  * This routine frees all SGL chunks of hdwq SGL chunk pool.
20671  *
20672  * Return codes:
20673  *   None
20674  **/
20675 void
20676 lpfc_free_sgl_per_hdwq(struct lpfc_hba *phba,
20677                        struct lpfc_sli4_hdw_queue *hdwq)
20678 {
20679         struct list_head *buf_list = &hdwq->sgl_list;
20680         struct sli4_hybrid_sgl *list_entry = NULL;
20681         struct sli4_hybrid_sgl *tmp = NULL;
20682         unsigned long iflags;
20683 
20684         spin_lock_irqsave(&hdwq->hdwq_lock, iflags);
20685 
20686         /* Free sgl pool */
20687         list_for_each_entry_safe(list_entry, tmp,
20688                                  buf_list, list_node) {
20689                 dma_pool_free(phba->lpfc_sg_dma_buf_pool,
20690                               list_entry->dma_sgl,
20691                               list_entry->dma_phys_sgl);
20692                 list_del(&list_entry->list_node);
20693                 kfree(list_entry);
20694         }
20695 
20696         spin_unlock_irqrestore(&hdwq->hdwq_lock, iflags);
20697 }
20698 
20699 /**
20700  * lpfc_get_cmd_rsp_buf_per_hdwq - Get one CMD/RSP buffer from hdwq
20701  * @phba: The HBA for which this call is being executed.
20702  * @lpfc_buf: IO buf structure to attach the CMD/RSP buffer
20703  *
20704  * This routine gets one CMD/RSP buffer from hdwq's CMD/RSP pool,
20705  * and will allocate an CMD/RSP buffer if the pool is empty.
20706  *
20707  * Return codes:
20708  *   NULL - Error
20709  *   Pointer to fcp_cmd_rsp_buf - Success
20710  **/
20711 struct fcp_cmd_rsp_buf *
20712 lpfc_get_cmd_rsp_buf_per_hdwq(struct lpfc_hba *phba,
20713                               struct lpfc_io_buf *lpfc_buf)
20714 {
20715         struct fcp_cmd_rsp_buf *list_entry = NULL;
20716         struct fcp_cmd_rsp_buf *tmp = NULL;
20717         struct fcp_cmd_rsp_buf *allocated_buf = NULL;
20718         struct lpfc_sli4_hdw_queue *hdwq = lpfc_buf->hdwq;
20719         struct list_head *buf_list = &hdwq->cmd_rsp_buf_list;
20720         unsigned long iflags;
20721 
20722         spin_lock_irqsave(&hdwq->hdwq_lock, iflags);
20723 
20724         if (likely(!list_empty(buf_list))) {
20725                 /* break off 1 chunk from the list */
20726                 list_for_each_entry_safe(list_entry, tmp,
20727                                          buf_list,
20728                                          list_node) {
20729                         list_move_tail(&list_entry->list_node,
20730                                        &lpfc_buf->dma_cmd_rsp_list);
20731                         break;
20732                 }
20733         } else {
20734                 /* allocate more */
20735                 spin_unlock_irqrestore(&hdwq->hdwq_lock, iflags);
20736                 tmp = kmalloc_node(sizeof(*tmp), GFP_ATOMIC,
20737                                    cpu_to_node(hdwq->io_wq->chann));
20738                 if (!tmp) {
20739                         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
20740                                         "8355 error kmalloc memory for HDWQ "
20741                                         "%d %s\n",
20742                                         lpfc_buf->hdwq_no, __func__);
20743                         return NULL;
20744                 }
20745 
20746                 tmp->fcp_cmnd = dma_pool_alloc(phba->lpfc_cmd_rsp_buf_pool,
20747                                                 GFP_ATOMIC,
20748                                                 &tmp->fcp_cmd_rsp_dma_handle);
20749 
20750                 if (!tmp->fcp_cmnd) {
20751                         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
20752                                         "8356 error pool_alloc memory for HDWQ "
20753                                         "%d %s\n",
20754                                         lpfc_buf->hdwq_no, __func__);
20755                         kfree(tmp);
20756                         return NULL;
20757                 }
20758 
20759                 tmp->fcp_rsp = (struct fcp_rsp *)((uint8_t *)tmp->fcp_cmnd +
20760                                 sizeof(struct fcp_cmnd));
20761 
20762                 spin_lock_irqsave(&hdwq->hdwq_lock, iflags);
20763                 list_add_tail(&tmp->list_node, &lpfc_buf->dma_cmd_rsp_list);
20764         }
20765 
20766         allocated_buf = list_last_entry(&lpfc_buf->dma_cmd_rsp_list,
20767                                         struct fcp_cmd_rsp_buf,
20768                                         list_node);
20769 
20770         spin_unlock_irqrestore(&hdwq->hdwq_lock, iflags);
20771 
20772         return allocated_buf;
20773 }
20774 
20775 /**
20776  * lpfc_put_cmd_rsp_buf_per_hdwq - Put one CMD/RSP buffer into hdwq pool
20777  * @phba: The HBA for which this call is being executed.
20778  * @lpfc_buf: IO buf structure with the CMD/RSP buf
20779  *
20780  * This routine puts one CMD/RSP buffer into executing CPU's CMD/RSP pool.
20781  *
20782  * Return codes:
20783  *   0 - Success
20784  *   -EINVAL - Error
20785  **/
20786 int
20787 lpfc_put_cmd_rsp_buf_per_hdwq(struct lpfc_hba *phba,
20788                               struct lpfc_io_buf *lpfc_buf)
20789 {
20790         int rc = 0;
20791         struct fcp_cmd_rsp_buf *list_entry = NULL;
20792         struct fcp_cmd_rsp_buf *tmp = NULL;
20793         struct lpfc_sli4_hdw_queue *hdwq = lpfc_buf->hdwq;
20794         struct list_head *buf_list = &hdwq->cmd_rsp_buf_list;
20795         unsigned long iflags;
20796 
20797         spin_lock_irqsave(&hdwq->hdwq_lock, iflags);
20798 
20799         if (likely(!list_empty(&lpfc_buf->dma_cmd_rsp_list))) {
20800                 list_for_each_entry_safe(list_entry, tmp,
20801                                          &lpfc_buf->dma_cmd_rsp_list,
20802                                          list_node) {
20803                         list_move_tail(&list_entry->list_node,
20804                                        buf_list);
20805                 }
20806         } else {
20807                 rc = -EINVAL;
20808         }
20809 
20810         spin_unlock_irqrestore(&hdwq->hdwq_lock, iflags);
20811         return rc;
20812 }
20813 
20814 /**
20815  * lpfc_free_cmd_rsp_buf_per_hdwq - Free all CMD/RSP chunks of hdwq pool
20816  * @phba: phba object
20817  * @hdwq: hdwq to cleanup cmd rsp buff resources on
20818  *
20819  * This routine frees all CMD/RSP buffers of hdwq's CMD/RSP buf pool.
20820  *
20821  * Return codes:
20822  *   None
20823  **/
20824 void
20825 lpfc_free_cmd_rsp_buf_per_hdwq(struct lpfc_hba *phba,
20826                                struct lpfc_sli4_hdw_queue *hdwq)
20827 {
20828         struct list_head *buf_list = &hdwq->cmd_rsp_buf_list;
20829         struct fcp_cmd_rsp_buf *list_entry = NULL;
20830         struct fcp_cmd_rsp_buf *tmp = NULL;
20831         unsigned long iflags;
20832 
20833         spin_lock_irqsave(&hdwq->hdwq_lock, iflags);
20834 
20835         /* Free cmd_rsp buf pool */
20836         list_for_each_entry_safe(list_entry, tmp,
20837                                  buf_list,
20838                                  list_node) {
20839                 dma_pool_free(phba->lpfc_cmd_rsp_buf_pool,
20840                               list_entry->fcp_cmnd,
20841                               list_entry->fcp_cmd_rsp_dma_handle);
20842                 list_del(&list_entry->list_node);
20843                 kfree(list_entry);
20844         }
20845 
20846         spin_unlock_irqrestore(&hdwq->hdwq_lock, iflags);
20847 }
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