1 /**
2 * Copyright (C) 2005 - 2015 Avago Technologies
3 * All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License version 2
7 * as published by the Free Software Foundation. The full GNU General
8 * Public License is included in this distribution in the file called COPYING.
9 *
10 * Written by: Jayamohan Kallickal (jayamohan.kallickal@avagotech.com)
11 *
12 * Contact Information:
13 * linux-drivers@avagotech.com
14 *
15 * Avago Technologies
16 * 3333 Susan Street
17 * Costa Mesa, CA 92626
18 */
19
20 #include <linux/reboot.h>
21 #include <linux/delay.h>
22 #include <linux/slab.h>
23 #include <linux/interrupt.h>
24 #include <linux/blkdev.h>
25 #include <linux/pci.h>
26 #include <linux/string.h>
27 #include <linux/kernel.h>
28 #include <linux/semaphore.h>
29 #include <linux/iscsi_boot_sysfs.h>
30 #include <linux/module.h>
31 #include <linux/bsg-lib.h>
32
33 #include <scsi/libiscsi.h>
34 #include <scsi/scsi_bsg_iscsi.h>
35 #include <scsi/scsi_netlink.h>
36 #include <scsi/scsi_transport_iscsi.h>
37 #include <scsi/scsi_transport.h>
38 #include <scsi/scsi_cmnd.h>
39 #include <scsi/scsi_device.h>
40 #include <scsi/scsi_host.h>
41 #include <scsi/scsi.h>
42 #include "be_main.h"
43 #include "be_iscsi.h"
44 #include "be_mgmt.h"
45 #include "be_cmds.h"
46
47 static unsigned int be_iopoll_budget = 10;
48 static unsigned int be_max_phys_size = 64;
49 static unsigned int enable_msix = 1;
50
51 MODULE_DESCRIPTION(DRV_DESC " " BUILD_STR);
52 MODULE_VERSION(BUILD_STR);
53 MODULE_AUTHOR("Avago Technologies");
54 MODULE_LICENSE("GPL");
55 module_param(be_iopoll_budget, int, 0);
56 module_param(enable_msix, int, 0);
57 module_param(be_max_phys_size, uint, S_IRUGO);
58 MODULE_PARM_DESC(be_max_phys_size,
59 "Maximum Size (In Kilobytes) of physically contiguous "
60 "memory that can be allocated. Range is 16 - 128");
61
62 #define beiscsi_disp_param(_name)\
63 ssize_t \
64 beiscsi_##_name##_disp(struct device *dev,\
65 struct device_attribute *attrib, char *buf) \
66 { \
67 struct Scsi_Host *shost = class_to_shost(dev);\
68 struct beiscsi_hba *phba = iscsi_host_priv(shost); \
69 uint32_t param_val = 0; \
70 param_val = phba->attr_##_name;\
71 return snprintf(buf, PAGE_SIZE, "%d\n",\
72 phba->attr_##_name);\
73 }
74
75 #define beiscsi_change_param(_name, _minval, _maxval, _defaval)\
76 int \
77 beiscsi_##_name##_change(struct beiscsi_hba *phba, uint32_t val)\
78 {\
79 if (val >= _minval && val <= _maxval) {\
80 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,\
81 "BA_%d : beiscsi_"#_name" updated "\
82 "from 0x%x ==> 0x%x\n",\
83 phba->attr_##_name, val); \
84 phba->attr_##_name = val;\
85 return 0;\
86 } \
87 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, \
88 "BA_%d beiscsi_"#_name" attribute "\
89 "cannot be updated to 0x%x, "\
90 "range allowed is ["#_minval" - "#_maxval"]\n", val);\
91 return -EINVAL;\
92 }
93
94 #define beiscsi_store_param(_name) \
95 ssize_t \
96 beiscsi_##_name##_store(struct device *dev,\
97 struct device_attribute *attr, const char *buf,\
98 size_t count) \
99 { \
100 struct Scsi_Host *shost = class_to_shost(dev);\
101 struct beiscsi_hba *phba = iscsi_host_priv(shost);\
102 uint32_t param_val = 0;\
103 if (!isdigit(buf[0]))\
104 return -EINVAL;\
105 if (sscanf(buf, "%i", ¶m_val) != 1)\
106 return -EINVAL;\
107 if (beiscsi_##_name##_change(phba, param_val) == 0) \
108 return strlen(buf);\
109 else \
110 return -EINVAL;\
111 }
112
113 #define beiscsi_init_param(_name, _minval, _maxval, _defval) \
114 int \
115 beiscsi_##_name##_init(struct beiscsi_hba *phba, uint32_t val) \
116 { \
117 if (val >= _minval && val <= _maxval) {\
118 phba->attr_##_name = val;\
119 return 0;\
120 } \
121 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,\
122 "BA_%d beiscsi_"#_name" attribute " \
123 "cannot be updated to 0x%x, "\
124 "range allowed is ["#_minval" - "#_maxval"]\n", val);\
125 phba->attr_##_name = _defval;\
126 return -EINVAL;\
127 }
128
129 #define BEISCSI_RW_ATTR(_name, _minval, _maxval, _defval, _descp) \
130 static uint beiscsi_##_name = _defval;\
131 module_param(beiscsi_##_name, uint, S_IRUGO);\
132 MODULE_PARM_DESC(beiscsi_##_name, _descp);\
133 beiscsi_disp_param(_name)\
134 beiscsi_change_param(_name, _minval, _maxval, _defval)\
135 beiscsi_store_param(_name)\
136 beiscsi_init_param(_name, _minval, _maxval, _defval)\
137 DEVICE_ATTR(beiscsi_##_name, S_IRUGO | S_IWUSR,\
138 beiscsi_##_name##_disp, beiscsi_##_name##_store)
139
140 /*
141 * When new log level added update the
142 * the MAX allowed value for log_enable
143 */
144 BEISCSI_RW_ATTR(log_enable, 0x00,
145 0xFF, 0x00, "Enable logging Bit Mask\n"
146 "\t\t\t\tInitialization Events : 0x01\n"
147 "\t\t\t\tMailbox Events : 0x02\n"
148 "\t\t\t\tMiscellaneous Events : 0x04\n"
149 "\t\t\t\tError Handling : 0x08\n"
150 "\t\t\t\tIO Path Events : 0x10\n"
151 "\t\t\t\tConfiguration Path : 0x20\n"
152 "\t\t\t\tiSCSI Protocol : 0x40\n");
153
154 DEVICE_ATTR(beiscsi_drvr_ver, S_IRUGO, beiscsi_drvr_ver_disp, NULL);
155 DEVICE_ATTR(beiscsi_adapter_family, S_IRUGO, beiscsi_adap_family_disp, NULL);
156 DEVICE_ATTR(beiscsi_fw_ver, S_IRUGO, beiscsi_fw_ver_disp, NULL);
157 DEVICE_ATTR(beiscsi_phys_port, S_IRUGO, beiscsi_phys_port_disp, NULL);
158 DEVICE_ATTR(beiscsi_active_session_count, S_IRUGO,
159 beiscsi_active_session_disp, NULL);
160 DEVICE_ATTR(beiscsi_free_session_count, S_IRUGO,
161 beiscsi_free_session_disp, NULL);
162 struct device_attribute *beiscsi_attrs[] = {
163 &dev_attr_beiscsi_log_enable,
164 &dev_attr_beiscsi_drvr_ver,
165 &dev_attr_beiscsi_adapter_family,
166 &dev_attr_beiscsi_fw_ver,
167 &dev_attr_beiscsi_active_session_count,
168 &dev_attr_beiscsi_free_session_count,
169 &dev_attr_beiscsi_phys_port,
170 NULL,
171 };
172
173 static char const *cqe_desc[] = {
174 "RESERVED_DESC",
175 "SOL_CMD_COMPLETE",
176 "SOL_CMD_KILLED_DATA_DIGEST_ERR",
177 "CXN_KILLED_PDU_SIZE_EXCEEDS_DSL",
178 "CXN_KILLED_BURST_LEN_MISMATCH",
179 "CXN_KILLED_AHS_RCVD",
180 "CXN_KILLED_HDR_DIGEST_ERR",
181 "CXN_KILLED_UNKNOWN_HDR",
182 "CXN_KILLED_STALE_ITT_TTT_RCVD",
183 "CXN_KILLED_INVALID_ITT_TTT_RCVD",
184 "CXN_KILLED_RST_RCVD",
185 "CXN_KILLED_TIMED_OUT",
186 "CXN_KILLED_RST_SENT",
187 "CXN_KILLED_FIN_RCVD",
188 "CXN_KILLED_BAD_UNSOL_PDU_RCVD",
189 "CXN_KILLED_BAD_WRB_INDEX_ERROR",
190 "CXN_KILLED_OVER_RUN_RESIDUAL",
191 "CXN_KILLED_UNDER_RUN_RESIDUAL",
192 "CMD_KILLED_INVALID_STATSN_RCVD",
193 "CMD_KILLED_INVALID_R2T_RCVD",
194 "CMD_CXN_KILLED_LUN_INVALID",
195 "CMD_CXN_KILLED_ICD_INVALID",
196 "CMD_CXN_KILLED_ITT_INVALID",
197 "CMD_CXN_KILLED_SEQ_OUTOFORDER",
198 "CMD_CXN_KILLED_INVALID_DATASN_RCVD",
199 "CXN_INVALIDATE_NOTIFY",
200 "CXN_INVALIDATE_INDEX_NOTIFY",
201 "CMD_INVALIDATED_NOTIFY",
202 "UNSOL_HDR_NOTIFY",
203 "UNSOL_DATA_NOTIFY",
204 "UNSOL_DATA_DIGEST_ERROR_NOTIFY",
205 "DRIVERMSG_NOTIFY",
206 "CXN_KILLED_CMND_DATA_NOT_ON_SAME_CONN",
207 "SOL_CMD_KILLED_DIF_ERR",
208 "CXN_KILLED_SYN_RCVD",
209 "CXN_KILLED_IMM_DATA_RCVD"
210 };
211
beiscsi_slave_configure(struct scsi_device * sdev)212 static int beiscsi_slave_configure(struct scsi_device *sdev)
213 {
214 blk_queue_max_segment_size(sdev->request_queue, 65536);
215 return 0;
216 }
217
beiscsi_eh_abort(struct scsi_cmnd * sc)218 static int beiscsi_eh_abort(struct scsi_cmnd *sc)
219 {
220 struct iscsi_cls_session *cls_session;
221 struct iscsi_task *aborted_task = (struct iscsi_task *)sc->SCp.ptr;
222 struct beiscsi_io_task *aborted_io_task;
223 struct iscsi_conn *conn;
224 struct beiscsi_conn *beiscsi_conn;
225 struct beiscsi_hba *phba;
226 struct iscsi_session *session;
227 struct invalidate_command_table *inv_tbl;
228 struct be_dma_mem nonemb_cmd;
229 unsigned int cid, tag, num_invalidate;
230 int rc;
231
232 cls_session = starget_to_session(scsi_target(sc->device));
233 session = cls_session->dd_data;
234
235 spin_lock_bh(&session->frwd_lock);
236 if (!aborted_task || !aborted_task->sc) {
237 /* we raced */
238 spin_unlock_bh(&session->frwd_lock);
239 return SUCCESS;
240 }
241
242 aborted_io_task = aborted_task->dd_data;
243 if (!aborted_io_task->scsi_cmnd) {
244 /* raced or invalid command */
245 spin_unlock_bh(&session->frwd_lock);
246 return SUCCESS;
247 }
248 spin_unlock_bh(&session->frwd_lock);
249 /* Invalidate WRB Posted for this Task */
250 AMAP_SET_BITS(struct amap_iscsi_wrb, invld,
251 aborted_io_task->pwrb_handle->pwrb,
252 1);
253
254 conn = aborted_task->conn;
255 beiscsi_conn = conn->dd_data;
256 phba = beiscsi_conn->phba;
257
258 /* invalidate iocb */
259 cid = beiscsi_conn->beiscsi_conn_cid;
260 inv_tbl = phba->inv_tbl;
261 memset(inv_tbl, 0x0, sizeof(*inv_tbl));
262 inv_tbl->cid = cid;
263 inv_tbl->icd = aborted_io_task->psgl_handle->sgl_index;
264 num_invalidate = 1;
265 nonemb_cmd.va = pci_alloc_consistent(phba->ctrl.pdev,
266 sizeof(struct invalidate_commands_params_in),
267 &nonemb_cmd.dma);
268 if (nonemb_cmd.va == NULL) {
269 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_EH,
270 "BM_%d : Failed to allocate memory for"
271 "mgmt_invalidate_icds\n");
272 return FAILED;
273 }
274 nonemb_cmd.size = sizeof(struct invalidate_commands_params_in);
275
276 tag = mgmt_invalidate_icds(phba, inv_tbl, num_invalidate,
277 cid, &nonemb_cmd);
278 if (!tag) {
279 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_EH,
280 "BM_%d : mgmt_invalidate_icds could not be"
281 "submitted\n");
282 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
283 nonemb_cmd.va, nonemb_cmd.dma);
284
285 return FAILED;
286 }
287
288 rc = beiscsi_mccq_compl(phba, tag, NULL, &nonemb_cmd);
289 if (rc != -EBUSY)
290 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
291 nonemb_cmd.va, nonemb_cmd.dma);
292
293 return iscsi_eh_abort(sc);
294 }
295
beiscsi_eh_device_reset(struct scsi_cmnd * sc)296 static int beiscsi_eh_device_reset(struct scsi_cmnd *sc)
297 {
298 struct iscsi_task *abrt_task;
299 struct beiscsi_io_task *abrt_io_task;
300 struct iscsi_conn *conn;
301 struct beiscsi_conn *beiscsi_conn;
302 struct beiscsi_hba *phba;
303 struct iscsi_session *session;
304 struct iscsi_cls_session *cls_session;
305 struct invalidate_command_table *inv_tbl;
306 struct be_dma_mem nonemb_cmd;
307 unsigned int cid, tag, i, num_invalidate;
308 int rc;
309
310 /* invalidate iocbs */
311 cls_session = starget_to_session(scsi_target(sc->device));
312 session = cls_session->dd_data;
313 spin_lock_bh(&session->frwd_lock);
314 if (!session->leadconn || session->state != ISCSI_STATE_LOGGED_IN) {
315 spin_unlock_bh(&session->frwd_lock);
316 return FAILED;
317 }
318 conn = session->leadconn;
319 beiscsi_conn = conn->dd_data;
320 phba = beiscsi_conn->phba;
321 cid = beiscsi_conn->beiscsi_conn_cid;
322 inv_tbl = phba->inv_tbl;
323 memset(inv_tbl, 0x0, sizeof(*inv_tbl) * BE2_CMDS_PER_CXN);
324 num_invalidate = 0;
325 for (i = 0; i < conn->session->cmds_max; i++) {
326 abrt_task = conn->session->cmds[i];
327 abrt_io_task = abrt_task->dd_data;
328 if (!abrt_task->sc || abrt_task->state == ISCSI_TASK_FREE)
329 continue;
330
331 if (sc->device->lun != abrt_task->sc->device->lun)
332 continue;
333
334 /* Invalidate WRB Posted for this Task */
335 AMAP_SET_BITS(struct amap_iscsi_wrb, invld,
336 abrt_io_task->pwrb_handle->pwrb,
337 1);
338
339 inv_tbl->cid = cid;
340 inv_tbl->icd = abrt_io_task->psgl_handle->sgl_index;
341 num_invalidate++;
342 inv_tbl++;
343 }
344 spin_unlock_bh(&session->frwd_lock);
345 inv_tbl = phba->inv_tbl;
346
347 nonemb_cmd.va = pci_alloc_consistent(phba->ctrl.pdev,
348 sizeof(struct invalidate_commands_params_in),
349 &nonemb_cmd.dma);
350 if (nonemb_cmd.va == NULL) {
351 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_EH,
352 "BM_%d : Failed to allocate memory for"
353 "mgmt_invalidate_icds\n");
354 return FAILED;
355 }
356 nonemb_cmd.size = sizeof(struct invalidate_commands_params_in);
357 memset(nonemb_cmd.va, 0, nonemb_cmd.size);
358 tag = mgmt_invalidate_icds(phba, inv_tbl, num_invalidate,
359 cid, &nonemb_cmd);
360 if (!tag) {
361 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_EH,
362 "BM_%d : mgmt_invalidate_icds could not be"
363 " submitted\n");
364 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
365 nonemb_cmd.va, nonemb_cmd.dma);
366 return FAILED;
367 }
368
369 rc = beiscsi_mccq_compl(phba, tag, NULL, &nonemb_cmd);
370 if (rc != -EBUSY)
371 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
372 nonemb_cmd.va, nonemb_cmd.dma);
373 return iscsi_eh_device_reset(sc);
374 }
375
beiscsi_show_boot_tgt_info(void * data,int type,char * buf)376 static ssize_t beiscsi_show_boot_tgt_info(void *data, int type, char *buf)
377 {
378 struct beiscsi_hba *phba = data;
379 struct mgmt_session_info *boot_sess = &phba->boot_sess;
380 struct mgmt_conn_info *boot_conn = &boot_sess->conn_list[0];
381 char *str = buf;
382 int rc;
383
384 switch (type) {
385 case ISCSI_BOOT_TGT_NAME:
386 rc = sprintf(buf, "%.*s\n",
387 (int)strlen(boot_sess->target_name),
388 (char *)&boot_sess->target_name);
389 break;
390 case ISCSI_BOOT_TGT_IP_ADDR:
391 if (boot_conn->dest_ipaddr.ip_type == 0x1)
392 rc = sprintf(buf, "%pI4\n",
393 (char *)&boot_conn->dest_ipaddr.addr);
394 else
395 rc = sprintf(str, "%pI6\n",
396 (char *)&boot_conn->dest_ipaddr.addr);
397 break;
398 case ISCSI_BOOT_TGT_PORT:
399 rc = sprintf(str, "%d\n", boot_conn->dest_port);
400 break;
401
402 case ISCSI_BOOT_TGT_CHAP_NAME:
403 rc = sprintf(str, "%.*s\n",
404 boot_conn->negotiated_login_options.auth_data.chap.
405 target_chap_name_length,
406 (char *)&boot_conn->negotiated_login_options.
407 auth_data.chap.target_chap_name);
408 break;
409 case ISCSI_BOOT_TGT_CHAP_SECRET:
410 rc = sprintf(str, "%.*s\n",
411 boot_conn->negotiated_login_options.auth_data.chap.
412 target_secret_length,
413 (char *)&boot_conn->negotiated_login_options.
414 auth_data.chap.target_secret);
415 break;
416 case ISCSI_BOOT_TGT_REV_CHAP_NAME:
417 rc = sprintf(str, "%.*s\n",
418 boot_conn->negotiated_login_options.auth_data.chap.
419 intr_chap_name_length,
420 (char *)&boot_conn->negotiated_login_options.
421 auth_data.chap.intr_chap_name);
422 break;
423 case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
424 rc = sprintf(str, "%.*s\n",
425 boot_conn->negotiated_login_options.auth_data.chap.
426 intr_secret_length,
427 (char *)&boot_conn->negotiated_login_options.
428 auth_data.chap.intr_secret);
429 break;
430 case ISCSI_BOOT_TGT_FLAGS:
431 rc = sprintf(str, "2\n");
432 break;
433 case ISCSI_BOOT_TGT_NIC_ASSOC:
434 rc = sprintf(str, "0\n");
435 break;
436 default:
437 rc = -ENOSYS;
438 break;
439 }
440 return rc;
441 }
442
beiscsi_show_boot_ini_info(void * data,int type,char * buf)443 static ssize_t beiscsi_show_boot_ini_info(void *data, int type, char *buf)
444 {
445 struct beiscsi_hba *phba = data;
446 char *str = buf;
447 int rc;
448
449 switch (type) {
450 case ISCSI_BOOT_INI_INITIATOR_NAME:
451 rc = sprintf(str, "%s\n", phba->boot_sess.initiator_iscsiname);
452 break;
453 default:
454 rc = -ENOSYS;
455 break;
456 }
457 return rc;
458 }
459
beiscsi_show_boot_eth_info(void * data,int type,char * buf)460 static ssize_t beiscsi_show_boot_eth_info(void *data, int type, char *buf)
461 {
462 struct beiscsi_hba *phba = data;
463 char *str = buf;
464 int rc;
465
466 switch (type) {
467 case ISCSI_BOOT_ETH_FLAGS:
468 rc = sprintf(str, "2\n");
469 break;
470 case ISCSI_BOOT_ETH_INDEX:
471 rc = sprintf(str, "0\n");
472 break;
473 case ISCSI_BOOT_ETH_MAC:
474 rc = beiscsi_get_macaddr(str, phba);
475 break;
476 default:
477 rc = -ENOSYS;
478 break;
479 }
480 return rc;
481 }
482
483
beiscsi_tgt_get_attr_visibility(void * data,int type)484 static umode_t beiscsi_tgt_get_attr_visibility(void *data, int type)
485 {
486 umode_t rc;
487
488 switch (type) {
489 case ISCSI_BOOT_TGT_NAME:
490 case ISCSI_BOOT_TGT_IP_ADDR:
491 case ISCSI_BOOT_TGT_PORT:
492 case ISCSI_BOOT_TGT_CHAP_NAME:
493 case ISCSI_BOOT_TGT_CHAP_SECRET:
494 case ISCSI_BOOT_TGT_REV_CHAP_NAME:
495 case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
496 case ISCSI_BOOT_TGT_NIC_ASSOC:
497 case ISCSI_BOOT_TGT_FLAGS:
498 rc = S_IRUGO;
499 break;
500 default:
501 rc = 0;
502 break;
503 }
504 return rc;
505 }
506
beiscsi_ini_get_attr_visibility(void * data,int type)507 static umode_t beiscsi_ini_get_attr_visibility(void *data, int type)
508 {
509 umode_t rc;
510
511 switch (type) {
512 case ISCSI_BOOT_INI_INITIATOR_NAME:
513 rc = S_IRUGO;
514 break;
515 default:
516 rc = 0;
517 break;
518 }
519 return rc;
520 }
521
522
beiscsi_eth_get_attr_visibility(void * data,int type)523 static umode_t beiscsi_eth_get_attr_visibility(void *data, int type)
524 {
525 umode_t rc;
526
527 switch (type) {
528 case ISCSI_BOOT_ETH_FLAGS:
529 case ISCSI_BOOT_ETH_MAC:
530 case ISCSI_BOOT_ETH_INDEX:
531 rc = S_IRUGO;
532 break;
533 default:
534 rc = 0;
535 break;
536 }
537 return rc;
538 }
539
540 /*------------------- PCI Driver operations and data ----------------- */
541 static const struct pci_device_id beiscsi_pci_id_table[] = {
542 { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) },
543 { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID2) },
544 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
545 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
546 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID3) },
547 { PCI_DEVICE(ELX_VENDOR_ID, OC_SKH_ID1) },
548 { 0 }
549 };
550 MODULE_DEVICE_TABLE(pci, beiscsi_pci_id_table);
551
552
553 static struct scsi_host_template beiscsi_sht = {
554 .module = THIS_MODULE,
555 .name = "Avago Technologies 10Gbe open-iscsi Initiator Driver",
556 .proc_name = DRV_NAME,
557 .queuecommand = iscsi_queuecommand,
558 .change_queue_depth = scsi_change_queue_depth,
559 .slave_configure = beiscsi_slave_configure,
560 .target_alloc = iscsi_target_alloc,
561 .eh_abort_handler = beiscsi_eh_abort,
562 .eh_device_reset_handler = beiscsi_eh_device_reset,
563 .eh_target_reset_handler = iscsi_eh_session_reset,
564 .shost_attrs = beiscsi_attrs,
565 .sg_tablesize = BEISCSI_SGLIST_ELEMENTS,
566 .can_queue = BE2_IO_DEPTH,
567 .this_id = -1,
568 .max_sectors = BEISCSI_MAX_SECTORS,
569 .cmd_per_lun = BEISCSI_CMD_PER_LUN,
570 .use_clustering = ENABLE_CLUSTERING,
571 .vendor_id = SCSI_NL_VID_TYPE_PCI | BE_VENDOR_ID,
572 .track_queue_depth = 1,
573 };
574
575 static struct scsi_transport_template *beiscsi_scsi_transport;
576
beiscsi_hba_alloc(struct pci_dev * pcidev)577 static struct beiscsi_hba *beiscsi_hba_alloc(struct pci_dev *pcidev)
578 {
579 struct beiscsi_hba *phba;
580 struct Scsi_Host *shost;
581
582 shost = iscsi_host_alloc(&beiscsi_sht, sizeof(*phba), 0);
583 if (!shost) {
584 dev_err(&pcidev->dev,
585 "beiscsi_hba_alloc - iscsi_host_alloc failed\n");
586 return NULL;
587 }
588 shost->max_id = BE2_MAX_SESSIONS;
589 shost->max_channel = 0;
590 shost->max_cmd_len = BEISCSI_MAX_CMD_LEN;
591 shost->max_lun = BEISCSI_NUM_MAX_LUN;
592 shost->transportt = beiscsi_scsi_transport;
593 phba = iscsi_host_priv(shost);
594 memset(phba, 0, sizeof(*phba));
595 phba->shost = shost;
596 phba->pcidev = pci_dev_get(pcidev);
597 pci_set_drvdata(pcidev, phba);
598 phba->interface_handle = 0xFFFFFFFF;
599
600 return phba;
601 }
602
beiscsi_unmap_pci_function(struct beiscsi_hba * phba)603 static void beiscsi_unmap_pci_function(struct beiscsi_hba *phba)
604 {
605 if (phba->csr_va) {
606 iounmap(phba->csr_va);
607 phba->csr_va = NULL;
608 }
609 if (phba->db_va) {
610 iounmap(phba->db_va);
611 phba->db_va = NULL;
612 }
613 if (phba->pci_va) {
614 iounmap(phba->pci_va);
615 phba->pci_va = NULL;
616 }
617 }
618
beiscsi_map_pci_bars(struct beiscsi_hba * phba,struct pci_dev * pcidev)619 static int beiscsi_map_pci_bars(struct beiscsi_hba *phba,
620 struct pci_dev *pcidev)
621 {
622 u8 __iomem *addr;
623 int pcicfg_reg;
624
625 addr = ioremap_nocache(pci_resource_start(pcidev, 2),
626 pci_resource_len(pcidev, 2));
627 if (addr == NULL)
628 return -ENOMEM;
629 phba->ctrl.csr = addr;
630 phba->csr_va = addr;
631 phba->csr_pa.u.a64.address = pci_resource_start(pcidev, 2);
632
633 addr = ioremap_nocache(pci_resource_start(pcidev, 4), 128 * 1024);
634 if (addr == NULL)
635 goto pci_map_err;
636 phba->ctrl.db = addr;
637 phba->db_va = addr;
638 phba->db_pa.u.a64.address = pci_resource_start(pcidev, 4);
639
640 if (phba->generation == BE_GEN2)
641 pcicfg_reg = 1;
642 else
643 pcicfg_reg = 0;
644
645 addr = ioremap_nocache(pci_resource_start(pcidev, pcicfg_reg),
646 pci_resource_len(pcidev, pcicfg_reg));
647
648 if (addr == NULL)
649 goto pci_map_err;
650 phba->ctrl.pcicfg = addr;
651 phba->pci_va = addr;
652 phba->pci_pa.u.a64.address = pci_resource_start(pcidev, pcicfg_reg);
653 return 0;
654
655 pci_map_err:
656 beiscsi_unmap_pci_function(phba);
657 return -ENOMEM;
658 }
659
beiscsi_enable_pci(struct pci_dev * pcidev)660 static int beiscsi_enable_pci(struct pci_dev *pcidev)
661 {
662 int ret;
663
664 ret = pci_enable_device(pcidev);
665 if (ret) {
666 dev_err(&pcidev->dev,
667 "beiscsi_enable_pci - enable device failed\n");
668 return ret;
669 }
670
671 pci_set_master(pcidev);
672 ret = pci_set_dma_mask(pcidev, DMA_BIT_MASK(64));
673 if (ret) {
674 ret = pci_set_dma_mask(pcidev, DMA_BIT_MASK(32));
675 if (ret) {
676 dev_err(&pcidev->dev, "Could not set PCI DMA Mask\n");
677 pci_disable_device(pcidev);
678 return ret;
679 } else {
680 ret = pci_set_consistent_dma_mask(pcidev,
681 DMA_BIT_MASK(32));
682 }
683 } else {
684 ret = pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(64));
685 if (ret) {
686 dev_err(&pcidev->dev, "Could not set PCI DMA Mask\n");
687 pci_disable_device(pcidev);
688 return ret;
689 }
690 }
691 return 0;
692 }
693
be_ctrl_init(struct beiscsi_hba * phba,struct pci_dev * pdev)694 static int be_ctrl_init(struct beiscsi_hba *phba, struct pci_dev *pdev)
695 {
696 struct be_ctrl_info *ctrl = &phba->ctrl;
697 struct be_dma_mem *mbox_mem_alloc = &ctrl->mbox_mem_alloced;
698 struct be_dma_mem *mbox_mem_align = &ctrl->mbox_mem;
699 int status = 0;
700
701 ctrl->pdev = pdev;
702 status = beiscsi_map_pci_bars(phba, pdev);
703 if (status)
704 return status;
705 mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
706 mbox_mem_alloc->va = pci_alloc_consistent(pdev,
707 mbox_mem_alloc->size,
708 &mbox_mem_alloc->dma);
709 if (!mbox_mem_alloc->va) {
710 beiscsi_unmap_pci_function(phba);
711 return -ENOMEM;
712 }
713
714 mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
715 mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
716 mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
717 memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
718 spin_lock_init(&ctrl->mbox_lock);
719 spin_lock_init(&phba->ctrl.mcc_lock);
720 spin_lock_init(&phba->ctrl.mcc_cq_lock);
721
722 return status;
723 }
724
725 /**
726 * beiscsi_get_params()- Set the config paramters
727 * @phba: ptr device priv structure
728 **/
beiscsi_get_params(struct beiscsi_hba * phba)729 static void beiscsi_get_params(struct beiscsi_hba *phba)
730 {
731 uint32_t total_cid_count = 0;
732 uint32_t total_icd_count = 0;
733 uint8_t ulp_num = 0;
734
735 total_cid_count = BEISCSI_GET_CID_COUNT(phba, BEISCSI_ULP0) +
736 BEISCSI_GET_CID_COUNT(phba, BEISCSI_ULP1);
737
738 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
739 uint32_t align_mask = 0;
740 uint32_t icd_post_per_page = 0;
741 uint32_t icd_count_unavailable = 0;
742 uint32_t icd_start = 0, icd_count = 0;
743 uint32_t icd_start_align = 0, icd_count_align = 0;
744
745 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
746 icd_start = phba->fw_config.iscsi_icd_start[ulp_num];
747 icd_count = phba->fw_config.iscsi_icd_count[ulp_num];
748
749 /* Get ICD count that can be posted on each page */
750 icd_post_per_page = (PAGE_SIZE / (BE2_SGE *
751 sizeof(struct iscsi_sge)));
752 align_mask = (icd_post_per_page - 1);
753
754 /* Check if icd_start is aligned ICD per page posting */
755 if (icd_start % icd_post_per_page) {
756 icd_start_align = ((icd_start +
757 icd_post_per_page) &
758 ~(align_mask));
759 phba->fw_config.
760 iscsi_icd_start[ulp_num] =
761 icd_start_align;
762 }
763
764 icd_count_align = (icd_count & ~align_mask);
765
766 /* ICD discarded in the process of alignment */
767 if (icd_start_align)
768 icd_count_unavailable = ((icd_start_align -
769 icd_start) +
770 (icd_count -
771 icd_count_align));
772
773 /* Updated ICD count available */
774 phba->fw_config.iscsi_icd_count[ulp_num] = (icd_count -
775 icd_count_unavailable);
776
777 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
778 "BM_%d : Aligned ICD values\n"
779 "\t ICD Start : %d\n"
780 "\t ICD Count : %d\n"
781 "\t ICD Discarded : %d\n",
782 phba->fw_config.
783 iscsi_icd_start[ulp_num],
784 phba->fw_config.
785 iscsi_icd_count[ulp_num],
786 icd_count_unavailable);
787 break;
788 }
789 }
790
791 total_icd_count = phba->fw_config.iscsi_icd_count[ulp_num];
792 phba->params.ios_per_ctrl = (total_icd_count -
793 (total_cid_count +
794 BE2_TMFS + BE2_NOPOUT_REQ));
795 phba->params.cxns_per_ctrl = total_cid_count;
796 phba->params.asyncpdus_per_ctrl = total_cid_count;
797 phba->params.icds_per_ctrl = total_icd_count;
798 phba->params.num_sge_per_io = BE2_SGE;
799 phba->params.defpdu_hdr_sz = BE2_DEFPDU_HDR_SZ;
800 phba->params.defpdu_data_sz = BE2_DEFPDU_DATA_SZ;
801 phba->params.eq_timer = 64;
802 phba->params.num_eq_entries = 1024;
803 phba->params.num_cq_entries = 1024;
804 phba->params.wrbs_per_cxn = 256;
805 }
806
hwi_ring_eq_db(struct beiscsi_hba * phba,unsigned int id,unsigned int clr_interrupt,unsigned int num_processed,unsigned char rearm,unsigned char event)807 static void hwi_ring_eq_db(struct beiscsi_hba *phba,
808 unsigned int id, unsigned int clr_interrupt,
809 unsigned int num_processed,
810 unsigned char rearm, unsigned char event)
811 {
812 u32 val = 0;
813
814 if (rearm)
815 val |= 1 << DB_EQ_REARM_SHIFT;
816 if (clr_interrupt)
817 val |= 1 << DB_EQ_CLR_SHIFT;
818 if (event)
819 val |= 1 << DB_EQ_EVNT_SHIFT;
820
821 val |= num_processed << DB_EQ_NUM_POPPED_SHIFT;
822 /* Setting lower order EQ_ID Bits */
823 val |= (id & DB_EQ_RING_ID_LOW_MASK);
824
825 /* Setting Higher order EQ_ID Bits */
826 val |= (((id >> DB_EQ_HIGH_FEILD_SHIFT) &
827 DB_EQ_RING_ID_HIGH_MASK)
828 << DB_EQ_HIGH_SET_SHIFT);
829
830 iowrite32(val, phba->db_va + DB_EQ_OFFSET);
831 }
832
833 /**
834 * be_isr_mcc - The isr routine of the driver.
835 * @irq: Not used
836 * @dev_id: Pointer to host adapter structure
837 */
be_isr_mcc(int irq,void * dev_id)838 static irqreturn_t be_isr_mcc(int irq, void *dev_id)
839 {
840 struct beiscsi_hba *phba;
841 struct be_eq_entry *eqe = NULL;
842 struct be_queue_info *eq;
843 struct be_queue_info *mcc;
844 unsigned int num_eq_processed;
845 struct be_eq_obj *pbe_eq;
846 unsigned long flags;
847
848 pbe_eq = dev_id;
849 eq = &pbe_eq->q;
850 phba = pbe_eq->phba;
851 mcc = &phba->ctrl.mcc_obj.cq;
852 eqe = queue_tail_node(eq);
853
854 num_eq_processed = 0;
855
856 while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32]
857 & EQE_VALID_MASK) {
858 if (((eqe->dw[offsetof(struct amap_eq_entry,
859 resource_id) / 32] &
860 EQE_RESID_MASK) >> 16) == mcc->id) {
861 spin_lock_irqsave(&phba->isr_lock, flags);
862 pbe_eq->todo_mcc_cq = true;
863 spin_unlock_irqrestore(&phba->isr_lock, flags);
864 }
865 AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);
866 queue_tail_inc(eq);
867 eqe = queue_tail_node(eq);
868 num_eq_processed++;
869 }
870 if (pbe_eq->todo_mcc_cq)
871 queue_work(phba->wq, &pbe_eq->work_cqs);
872 if (num_eq_processed)
873 hwi_ring_eq_db(phba, eq->id, 1, num_eq_processed, 1, 1);
874
875 return IRQ_HANDLED;
876 }
877
878 /**
879 * be_isr_msix - The isr routine of the driver.
880 * @irq: Not used
881 * @dev_id: Pointer to host adapter structure
882 */
be_isr_msix(int irq,void * dev_id)883 static irqreturn_t be_isr_msix(int irq, void *dev_id)
884 {
885 struct beiscsi_hba *phba;
886 struct be_eq_entry *eqe = NULL;
887 struct be_queue_info *eq;
888 struct be_queue_info *cq;
889 unsigned int num_eq_processed;
890 struct be_eq_obj *pbe_eq;
891
892 pbe_eq = dev_id;
893 eq = &pbe_eq->q;
894 cq = pbe_eq->cq;
895 eqe = queue_tail_node(eq);
896
897 phba = pbe_eq->phba;
898 num_eq_processed = 0;
899 while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32]
900 & EQE_VALID_MASK) {
901 if (!blk_iopoll_sched_prep(&pbe_eq->iopoll))
902 blk_iopoll_sched(&pbe_eq->iopoll);
903
904 AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);
905 queue_tail_inc(eq);
906 eqe = queue_tail_node(eq);
907 num_eq_processed++;
908 }
909
910 if (num_eq_processed)
911 hwi_ring_eq_db(phba, eq->id, 1, num_eq_processed, 0, 1);
912
913 return IRQ_HANDLED;
914 }
915
916 /**
917 * be_isr - The isr routine of the driver.
918 * @irq: Not used
919 * @dev_id: Pointer to host adapter structure
920 */
be_isr(int irq,void * dev_id)921 static irqreturn_t be_isr(int irq, void *dev_id)
922 {
923 struct beiscsi_hba *phba;
924 struct hwi_controller *phwi_ctrlr;
925 struct hwi_context_memory *phwi_context;
926 struct be_eq_entry *eqe = NULL;
927 struct be_queue_info *eq;
928 struct be_queue_info *mcc;
929 unsigned long flags, index;
930 unsigned int num_mcceq_processed, num_ioeq_processed;
931 struct be_ctrl_info *ctrl;
932 struct be_eq_obj *pbe_eq;
933 int isr;
934
935 phba = dev_id;
936 ctrl = &phba->ctrl;
937 isr = ioread32(ctrl->csr + CEV_ISR0_OFFSET +
938 (PCI_FUNC(ctrl->pdev->devfn) * CEV_ISR_SIZE));
939 if (!isr)
940 return IRQ_NONE;
941
942 phwi_ctrlr = phba->phwi_ctrlr;
943 phwi_context = phwi_ctrlr->phwi_ctxt;
944 pbe_eq = &phwi_context->be_eq[0];
945
946 eq = &phwi_context->be_eq[0].q;
947 mcc = &phba->ctrl.mcc_obj.cq;
948 index = 0;
949 eqe = queue_tail_node(eq);
950
951 num_ioeq_processed = 0;
952 num_mcceq_processed = 0;
953 while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32]
954 & EQE_VALID_MASK) {
955 if (((eqe->dw[offsetof(struct amap_eq_entry,
956 resource_id) / 32] &
957 EQE_RESID_MASK) >> 16) == mcc->id) {
958 spin_lock_irqsave(&phba->isr_lock, flags);
959 pbe_eq->todo_mcc_cq = true;
960 spin_unlock_irqrestore(&phba->isr_lock, flags);
961 num_mcceq_processed++;
962 } else {
963 if (!blk_iopoll_sched_prep(&pbe_eq->iopoll))
964 blk_iopoll_sched(&pbe_eq->iopoll);
965 num_ioeq_processed++;
966 }
967 AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);
968 queue_tail_inc(eq);
969 eqe = queue_tail_node(eq);
970 }
971 if (num_ioeq_processed || num_mcceq_processed) {
972 if (pbe_eq->todo_mcc_cq)
973 queue_work(phba->wq, &pbe_eq->work_cqs);
974
975 if ((num_mcceq_processed) && (!num_ioeq_processed))
976 hwi_ring_eq_db(phba, eq->id, 0,
977 (num_ioeq_processed +
978 num_mcceq_processed) , 1, 1);
979 else
980 hwi_ring_eq_db(phba, eq->id, 0,
981 (num_ioeq_processed +
982 num_mcceq_processed), 0, 1);
983
984 return IRQ_HANDLED;
985 } else
986 return IRQ_NONE;
987 }
988
beiscsi_init_irqs(struct beiscsi_hba * phba)989 static int beiscsi_init_irqs(struct beiscsi_hba *phba)
990 {
991 struct pci_dev *pcidev = phba->pcidev;
992 struct hwi_controller *phwi_ctrlr;
993 struct hwi_context_memory *phwi_context;
994 int ret, msix_vec, i, j;
995
996 phwi_ctrlr = phba->phwi_ctrlr;
997 phwi_context = phwi_ctrlr->phwi_ctxt;
998
999 if (phba->msix_enabled) {
1000 for (i = 0; i < phba->num_cpus; i++) {
1001 phba->msi_name[i] = kzalloc(BEISCSI_MSI_NAME,
1002 GFP_KERNEL);
1003 if (!phba->msi_name[i]) {
1004 ret = -ENOMEM;
1005 goto free_msix_irqs;
1006 }
1007
1008 sprintf(phba->msi_name[i], "beiscsi_%02x_%02x",
1009 phba->shost->host_no, i);
1010 msix_vec = phba->msix_entries[i].vector;
1011 ret = request_irq(msix_vec, be_isr_msix, 0,
1012 phba->msi_name[i],
1013 &phwi_context->be_eq[i]);
1014 if (ret) {
1015 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
1016 "BM_%d : beiscsi_init_irqs-Failed to"
1017 "register msix for i = %d\n",
1018 i);
1019 kfree(phba->msi_name[i]);
1020 goto free_msix_irqs;
1021 }
1022 }
1023 phba->msi_name[i] = kzalloc(BEISCSI_MSI_NAME, GFP_KERNEL);
1024 if (!phba->msi_name[i]) {
1025 ret = -ENOMEM;
1026 goto free_msix_irqs;
1027 }
1028 sprintf(phba->msi_name[i], "beiscsi_mcc_%02x",
1029 phba->shost->host_no);
1030 msix_vec = phba->msix_entries[i].vector;
1031 ret = request_irq(msix_vec, be_isr_mcc, 0, phba->msi_name[i],
1032 &phwi_context->be_eq[i]);
1033 if (ret) {
1034 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT ,
1035 "BM_%d : beiscsi_init_irqs-"
1036 "Failed to register beiscsi_msix_mcc\n");
1037 kfree(phba->msi_name[i]);
1038 goto free_msix_irqs;
1039 }
1040
1041 } else {
1042 ret = request_irq(pcidev->irq, be_isr, IRQF_SHARED,
1043 "beiscsi", phba);
1044 if (ret) {
1045 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
1046 "BM_%d : beiscsi_init_irqs-"
1047 "Failed to register irq\\n");
1048 return ret;
1049 }
1050 }
1051 return 0;
1052 free_msix_irqs:
1053 for (j = i - 1; j >= 0; j--) {
1054 kfree(phba->msi_name[j]);
1055 msix_vec = phba->msix_entries[j].vector;
1056 free_irq(msix_vec, &phwi_context->be_eq[j]);
1057 }
1058 return ret;
1059 }
1060
hwi_ring_cq_db(struct beiscsi_hba * phba,unsigned int id,unsigned int num_processed,unsigned char rearm,unsigned char event)1061 void hwi_ring_cq_db(struct beiscsi_hba *phba,
1062 unsigned int id, unsigned int num_processed,
1063 unsigned char rearm, unsigned char event)
1064 {
1065 u32 val = 0;
1066
1067 if (rearm)
1068 val |= 1 << DB_CQ_REARM_SHIFT;
1069
1070 val |= num_processed << DB_CQ_NUM_POPPED_SHIFT;
1071
1072 /* Setting lower order CQ_ID Bits */
1073 val |= (id & DB_CQ_RING_ID_LOW_MASK);
1074
1075 /* Setting Higher order CQ_ID Bits */
1076 val |= (((id >> DB_CQ_HIGH_FEILD_SHIFT) &
1077 DB_CQ_RING_ID_HIGH_MASK)
1078 << DB_CQ_HIGH_SET_SHIFT);
1079
1080 iowrite32(val, phba->db_va + DB_CQ_OFFSET);
1081 }
1082
1083 static unsigned int
beiscsi_process_async_pdu(struct beiscsi_conn * beiscsi_conn,struct beiscsi_hba * phba,struct pdu_base * ppdu,unsigned long pdu_len,void * pbuffer,unsigned long buf_len)1084 beiscsi_process_async_pdu(struct beiscsi_conn *beiscsi_conn,
1085 struct beiscsi_hba *phba,
1086 struct pdu_base *ppdu,
1087 unsigned long pdu_len,
1088 void *pbuffer, unsigned long buf_len)
1089 {
1090 struct iscsi_conn *conn = beiscsi_conn->conn;
1091 struct iscsi_session *session = conn->session;
1092 struct iscsi_task *task;
1093 struct beiscsi_io_task *io_task;
1094 struct iscsi_hdr *login_hdr;
1095
1096 switch (ppdu->dw[offsetof(struct amap_pdu_base, opcode) / 32] &
1097 PDUBASE_OPCODE_MASK) {
1098 case ISCSI_OP_NOOP_IN:
1099 pbuffer = NULL;
1100 buf_len = 0;
1101 break;
1102 case ISCSI_OP_ASYNC_EVENT:
1103 break;
1104 case ISCSI_OP_REJECT:
1105 WARN_ON(!pbuffer);
1106 WARN_ON(!(buf_len == 48));
1107 beiscsi_log(phba, KERN_ERR,
1108 BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,
1109 "BM_%d : In ISCSI_OP_REJECT\n");
1110 break;
1111 case ISCSI_OP_LOGIN_RSP:
1112 case ISCSI_OP_TEXT_RSP:
1113 task = conn->login_task;
1114 io_task = task->dd_data;
1115 login_hdr = (struct iscsi_hdr *)ppdu;
1116 login_hdr->itt = io_task->libiscsi_itt;
1117 break;
1118 default:
1119 beiscsi_log(phba, KERN_WARNING,
1120 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
1121 "BM_%d : Unrecognized opcode 0x%x in async msg\n",
1122 (ppdu->
1123 dw[offsetof(struct amap_pdu_base, opcode) / 32]
1124 & PDUBASE_OPCODE_MASK));
1125 return 1;
1126 }
1127
1128 spin_lock_bh(&session->back_lock);
1129 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)ppdu, pbuffer, buf_len);
1130 spin_unlock_bh(&session->back_lock);
1131 return 0;
1132 }
1133
alloc_io_sgl_handle(struct beiscsi_hba * phba)1134 static struct sgl_handle *alloc_io_sgl_handle(struct beiscsi_hba *phba)
1135 {
1136 struct sgl_handle *psgl_handle;
1137
1138 if (phba->io_sgl_hndl_avbl) {
1139 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_IO,
1140 "BM_%d : In alloc_io_sgl_handle,"
1141 " io_sgl_alloc_index=%d\n",
1142 phba->io_sgl_alloc_index);
1143
1144 psgl_handle = phba->io_sgl_hndl_base[phba->
1145 io_sgl_alloc_index];
1146 phba->io_sgl_hndl_base[phba->io_sgl_alloc_index] = NULL;
1147 phba->io_sgl_hndl_avbl--;
1148 if (phba->io_sgl_alloc_index == (phba->params.
1149 ios_per_ctrl - 1))
1150 phba->io_sgl_alloc_index = 0;
1151 else
1152 phba->io_sgl_alloc_index++;
1153 } else
1154 psgl_handle = NULL;
1155 return psgl_handle;
1156 }
1157
1158 static void
free_io_sgl_handle(struct beiscsi_hba * phba,struct sgl_handle * psgl_handle)1159 free_io_sgl_handle(struct beiscsi_hba *phba, struct sgl_handle *psgl_handle)
1160 {
1161 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_IO,
1162 "BM_%d : In free_,io_sgl_free_index=%d\n",
1163 phba->io_sgl_free_index);
1164
1165 if (phba->io_sgl_hndl_base[phba->io_sgl_free_index]) {
1166 /*
1167 * this can happen if clean_task is called on a task that
1168 * failed in xmit_task or alloc_pdu.
1169 */
1170 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_IO,
1171 "BM_%d : Double Free in IO SGL io_sgl_free_index=%d,"
1172 "value there=%p\n", phba->io_sgl_free_index,
1173 phba->io_sgl_hndl_base
1174 [phba->io_sgl_free_index]);
1175 return;
1176 }
1177 phba->io_sgl_hndl_base[phba->io_sgl_free_index] = psgl_handle;
1178 phba->io_sgl_hndl_avbl++;
1179 if (phba->io_sgl_free_index == (phba->params.ios_per_ctrl - 1))
1180 phba->io_sgl_free_index = 0;
1181 else
1182 phba->io_sgl_free_index++;
1183 }
1184
1185 /**
1186 * alloc_wrb_handle - To allocate a wrb handle
1187 * @phba: The hba pointer
1188 * @cid: The cid to use for allocation
1189 *
1190 * This happens under session_lock until submission to chip
1191 */
alloc_wrb_handle(struct beiscsi_hba * phba,unsigned int cid)1192 struct wrb_handle *alloc_wrb_handle(struct beiscsi_hba *phba, unsigned int cid)
1193 {
1194 struct hwi_wrb_context *pwrb_context;
1195 struct hwi_controller *phwi_ctrlr;
1196 struct wrb_handle *pwrb_handle, *pwrb_handle_tmp;
1197 uint16_t cri_index = BE_GET_CRI_FROM_CID(cid);
1198
1199 phwi_ctrlr = phba->phwi_ctrlr;
1200 pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
1201 if (pwrb_context->wrb_handles_available >= 2) {
1202 pwrb_handle = pwrb_context->pwrb_handle_base[
1203 pwrb_context->alloc_index];
1204 pwrb_context->wrb_handles_available--;
1205 if (pwrb_context->alloc_index ==
1206 (phba->params.wrbs_per_cxn - 1))
1207 pwrb_context->alloc_index = 0;
1208 else
1209 pwrb_context->alloc_index++;
1210 pwrb_handle_tmp = pwrb_context->pwrb_handle_base[
1211 pwrb_context->alloc_index];
1212 pwrb_handle->nxt_wrb_index = pwrb_handle_tmp->wrb_index;
1213 } else
1214 pwrb_handle = NULL;
1215 return pwrb_handle;
1216 }
1217
1218 /**
1219 * free_wrb_handle - To free the wrb handle back to pool
1220 * @phba: The hba pointer
1221 * @pwrb_context: The context to free from
1222 * @pwrb_handle: The wrb_handle to free
1223 *
1224 * This happens under session_lock until submission to chip
1225 */
1226 static void
free_wrb_handle(struct beiscsi_hba * phba,struct hwi_wrb_context * pwrb_context,struct wrb_handle * pwrb_handle)1227 free_wrb_handle(struct beiscsi_hba *phba, struct hwi_wrb_context *pwrb_context,
1228 struct wrb_handle *pwrb_handle)
1229 {
1230 pwrb_context->pwrb_handle_base[pwrb_context->free_index] = pwrb_handle;
1231 pwrb_context->wrb_handles_available++;
1232 if (pwrb_context->free_index == (phba->params.wrbs_per_cxn - 1))
1233 pwrb_context->free_index = 0;
1234 else
1235 pwrb_context->free_index++;
1236
1237 beiscsi_log(phba, KERN_INFO,
1238 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
1239 "BM_%d : FREE WRB: pwrb_handle=%p free_index=0x%x"
1240 "wrb_handles_available=%d\n",
1241 pwrb_handle, pwrb_context->free_index,
1242 pwrb_context->wrb_handles_available);
1243 }
1244
alloc_mgmt_sgl_handle(struct beiscsi_hba * phba)1245 static struct sgl_handle *alloc_mgmt_sgl_handle(struct beiscsi_hba *phba)
1246 {
1247 struct sgl_handle *psgl_handle;
1248
1249 if (phba->eh_sgl_hndl_avbl) {
1250 psgl_handle = phba->eh_sgl_hndl_base[phba->eh_sgl_alloc_index];
1251 phba->eh_sgl_hndl_base[phba->eh_sgl_alloc_index] = NULL;
1252 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1253 "BM_%d : mgmt_sgl_alloc_index=%d=0x%x\n",
1254 phba->eh_sgl_alloc_index,
1255 phba->eh_sgl_alloc_index);
1256
1257 phba->eh_sgl_hndl_avbl--;
1258 if (phba->eh_sgl_alloc_index ==
1259 (phba->params.icds_per_ctrl - phba->params.ios_per_ctrl -
1260 1))
1261 phba->eh_sgl_alloc_index = 0;
1262 else
1263 phba->eh_sgl_alloc_index++;
1264 } else
1265 psgl_handle = NULL;
1266 return psgl_handle;
1267 }
1268
1269 void
free_mgmt_sgl_handle(struct beiscsi_hba * phba,struct sgl_handle * psgl_handle)1270 free_mgmt_sgl_handle(struct beiscsi_hba *phba, struct sgl_handle *psgl_handle)
1271 {
1272
1273 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1274 "BM_%d : In free_mgmt_sgl_handle,"
1275 "eh_sgl_free_index=%d\n",
1276 phba->eh_sgl_free_index);
1277
1278 if (phba->eh_sgl_hndl_base[phba->eh_sgl_free_index]) {
1279 /*
1280 * this can happen if clean_task is called on a task that
1281 * failed in xmit_task or alloc_pdu.
1282 */
1283 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
1284 "BM_%d : Double Free in eh SGL ,"
1285 "eh_sgl_free_index=%d\n",
1286 phba->eh_sgl_free_index);
1287 return;
1288 }
1289 phba->eh_sgl_hndl_base[phba->eh_sgl_free_index] = psgl_handle;
1290 phba->eh_sgl_hndl_avbl++;
1291 if (phba->eh_sgl_free_index ==
1292 (phba->params.icds_per_ctrl - phba->params.ios_per_ctrl - 1))
1293 phba->eh_sgl_free_index = 0;
1294 else
1295 phba->eh_sgl_free_index++;
1296 }
1297
1298 static void
be_complete_io(struct beiscsi_conn * beiscsi_conn,struct iscsi_task * task,struct common_sol_cqe * csol_cqe)1299 be_complete_io(struct beiscsi_conn *beiscsi_conn,
1300 struct iscsi_task *task,
1301 struct common_sol_cqe *csol_cqe)
1302 {
1303 struct beiscsi_io_task *io_task = task->dd_data;
1304 struct be_status_bhs *sts_bhs =
1305 (struct be_status_bhs *)io_task->cmd_bhs;
1306 struct iscsi_conn *conn = beiscsi_conn->conn;
1307 unsigned char *sense;
1308 u32 resid = 0, exp_cmdsn, max_cmdsn;
1309 u8 rsp, status, flags;
1310
1311 exp_cmdsn = csol_cqe->exp_cmdsn;
1312 max_cmdsn = (csol_cqe->exp_cmdsn +
1313 csol_cqe->cmd_wnd - 1);
1314 rsp = csol_cqe->i_resp;
1315 status = csol_cqe->i_sts;
1316 flags = csol_cqe->i_flags;
1317 resid = csol_cqe->res_cnt;
1318
1319 if (!task->sc) {
1320 if (io_task->scsi_cmnd) {
1321 scsi_dma_unmap(io_task->scsi_cmnd);
1322 io_task->scsi_cmnd = NULL;
1323 }
1324
1325 return;
1326 }
1327 task->sc->result = (DID_OK << 16) | status;
1328 if (rsp != ISCSI_STATUS_CMD_COMPLETED) {
1329 task->sc->result = DID_ERROR << 16;
1330 goto unmap;
1331 }
1332
1333 /* bidi not initially supported */
1334 if (flags & (ISCSI_FLAG_CMD_UNDERFLOW | ISCSI_FLAG_CMD_OVERFLOW)) {
1335 if (!status && (flags & ISCSI_FLAG_CMD_OVERFLOW))
1336 task->sc->result = DID_ERROR << 16;
1337
1338 if (flags & ISCSI_FLAG_CMD_UNDERFLOW) {
1339 scsi_set_resid(task->sc, resid);
1340 if (!status && (scsi_bufflen(task->sc) - resid <
1341 task->sc->underflow))
1342 task->sc->result = DID_ERROR << 16;
1343 }
1344 }
1345
1346 if (status == SAM_STAT_CHECK_CONDITION) {
1347 u16 sense_len;
1348 unsigned short *slen = (unsigned short *)sts_bhs->sense_info;
1349
1350 sense = sts_bhs->sense_info + sizeof(unsigned short);
1351 sense_len = be16_to_cpu(*slen);
1352 memcpy(task->sc->sense_buffer, sense,
1353 min_t(u16, sense_len, SCSI_SENSE_BUFFERSIZE));
1354 }
1355
1356 if (io_task->cmd_bhs->iscsi_hdr.flags & ISCSI_FLAG_CMD_READ)
1357 conn->rxdata_octets += resid;
1358 unmap:
1359 scsi_dma_unmap(io_task->scsi_cmnd);
1360 io_task->scsi_cmnd = NULL;
1361 iscsi_complete_scsi_task(task, exp_cmdsn, max_cmdsn);
1362 }
1363
1364 static void
be_complete_logout(struct beiscsi_conn * beiscsi_conn,struct iscsi_task * task,struct common_sol_cqe * csol_cqe)1365 be_complete_logout(struct beiscsi_conn *beiscsi_conn,
1366 struct iscsi_task *task,
1367 struct common_sol_cqe *csol_cqe)
1368 {
1369 struct iscsi_logout_rsp *hdr;
1370 struct beiscsi_io_task *io_task = task->dd_data;
1371 struct iscsi_conn *conn = beiscsi_conn->conn;
1372
1373 hdr = (struct iscsi_logout_rsp *)task->hdr;
1374 hdr->opcode = ISCSI_OP_LOGOUT_RSP;
1375 hdr->t2wait = 5;
1376 hdr->t2retain = 0;
1377 hdr->flags = csol_cqe->i_flags;
1378 hdr->response = csol_cqe->i_resp;
1379 hdr->exp_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn);
1380 hdr->max_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn +
1381 csol_cqe->cmd_wnd - 1);
1382
1383 hdr->dlength[0] = 0;
1384 hdr->dlength[1] = 0;
1385 hdr->dlength[2] = 0;
1386 hdr->hlength = 0;
1387 hdr->itt = io_task->libiscsi_itt;
1388 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0);
1389 }
1390
1391 static void
be_complete_tmf(struct beiscsi_conn * beiscsi_conn,struct iscsi_task * task,struct common_sol_cqe * csol_cqe)1392 be_complete_tmf(struct beiscsi_conn *beiscsi_conn,
1393 struct iscsi_task *task,
1394 struct common_sol_cqe *csol_cqe)
1395 {
1396 struct iscsi_tm_rsp *hdr;
1397 struct iscsi_conn *conn = beiscsi_conn->conn;
1398 struct beiscsi_io_task *io_task = task->dd_data;
1399
1400 hdr = (struct iscsi_tm_rsp *)task->hdr;
1401 hdr->opcode = ISCSI_OP_SCSI_TMFUNC_RSP;
1402 hdr->flags = csol_cqe->i_flags;
1403 hdr->response = csol_cqe->i_resp;
1404 hdr->exp_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn);
1405 hdr->max_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn +
1406 csol_cqe->cmd_wnd - 1);
1407
1408 hdr->itt = io_task->libiscsi_itt;
1409 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0);
1410 }
1411
1412 static void
hwi_complete_drvr_msgs(struct beiscsi_conn * beiscsi_conn,struct beiscsi_hba * phba,struct sol_cqe * psol)1413 hwi_complete_drvr_msgs(struct beiscsi_conn *beiscsi_conn,
1414 struct beiscsi_hba *phba, struct sol_cqe *psol)
1415 {
1416 struct hwi_wrb_context *pwrb_context;
1417 struct wrb_handle *pwrb_handle = NULL;
1418 struct hwi_controller *phwi_ctrlr;
1419 struct iscsi_task *task;
1420 struct beiscsi_io_task *io_task;
1421 uint16_t wrb_index, cid, cri_index;
1422
1423 phwi_ctrlr = phba->phwi_ctrlr;
1424 if (is_chip_be2_be3r(phba)) {
1425 wrb_index = AMAP_GET_BITS(struct amap_it_dmsg_cqe,
1426 wrb_idx, psol);
1427 cid = AMAP_GET_BITS(struct amap_it_dmsg_cqe,
1428 cid, psol);
1429 } else {
1430 wrb_index = AMAP_GET_BITS(struct amap_it_dmsg_cqe_v2,
1431 wrb_idx, psol);
1432 cid = AMAP_GET_BITS(struct amap_it_dmsg_cqe_v2,
1433 cid, psol);
1434 }
1435
1436 cri_index = BE_GET_CRI_FROM_CID(cid);
1437 pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
1438 pwrb_handle = pwrb_context->pwrb_handle_basestd[wrb_index];
1439 task = pwrb_handle->pio_handle;
1440
1441 io_task = task->dd_data;
1442 memset(io_task->pwrb_handle->pwrb, 0, sizeof(struct iscsi_wrb));
1443 iscsi_put_task(task);
1444 }
1445
1446 static void
be_complete_nopin_resp(struct beiscsi_conn * beiscsi_conn,struct iscsi_task * task,struct common_sol_cqe * csol_cqe)1447 be_complete_nopin_resp(struct beiscsi_conn *beiscsi_conn,
1448 struct iscsi_task *task,
1449 struct common_sol_cqe *csol_cqe)
1450 {
1451 struct iscsi_nopin *hdr;
1452 struct iscsi_conn *conn = beiscsi_conn->conn;
1453 struct beiscsi_io_task *io_task = task->dd_data;
1454
1455 hdr = (struct iscsi_nopin *)task->hdr;
1456 hdr->flags = csol_cqe->i_flags;
1457 hdr->exp_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn);
1458 hdr->max_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn +
1459 csol_cqe->cmd_wnd - 1);
1460
1461 hdr->opcode = ISCSI_OP_NOOP_IN;
1462 hdr->itt = io_task->libiscsi_itt;
1463 __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0);
1464 }
1465
adapter_get_sol_cqe(struct beiscsi_hba * phba,struct sol_cqe * psol,struct common_sol_cqe * csol_cqe)1466 static void adapter_get_sol_cqe(struct beiscsi_hba *phba,
1467 struct sol_cqe *psol,
1468 struct common_sol_cqe *csol_cqe)
1469 {
1470 if (is_chip_be2_be3r(phba)) {
1471 csol_cqe->exp_cmdsn = AMAP_GET_BITS(struct amap_sol_cqe,
1472 i_exp_cmd_sn, psol);
1473 csol_cqe->res_cnt = AMAP_GET_BITS(struct amap_sol_cqe,
1474 i_res_cnt, psol);
1475 csol_cqe->cmd_wnd = AMAP_GET_BITS(struct amap_sol_cqe,
1476 i_cmd_wnd, psol);
1477 csol_cqe->wrb_index = AMAP_GET_BITS(struct amap_sol_cqe,
1478 wrb_index, psol);
1479 csol_cqe->cid = AMAP_GET_BITS(struct amap_sol_cqe,
1480 cid, psol);
1481 csol_cqe->hw_sts = AMAP_GET_BITS(struct amap_sol_cqe,
1482 hw_sts, psol);
1483 csol_cqe->i_resp = AMAP_GET_BITS(struct amap_sol_cqe,
1484 i_resp, psol);
1485 csol_cqe->i_sts = AMAP_GET_BITS(struct amap_sol_cqe,
1486 i_sts, psol);
1487 csol_cqe->i_flags = AMAP_GET_BITS(struct amap_sol_cqe,
1488 i_flags, psol);
1489 } else {
1490 csol_cqe->exp_cmdsn = AMAP_GET_BITS(struct amap_sol_cqe_v2,
1491 i_exp_cmd_sn, psol);
1492 csol_cqe->res_cnt = AMAP_GET_BITS(struct amap_sol_cqe_v2,
1493 i_res_cnt, psol);
1494 csol_cqe->wrb_index = AMAP_GET_BITS(struct amap_sol_cqe_v2,
1495 wrb_index, psol);
1496 csol_cqe->cid = AMAP_GET_BITS(struct amap_sol_cqe_v2,
1497 cid, psol);
1498 csol_cqe->hw_sts = AMAP_GET_BITS(struct amap_sol_cqe_v2,
1499 hw_sts, psol);
1500 csol_cqe->cmd_wnd = AMAP_GET_BITS(struct amap_sol_cqe_v2,
1501 i_cmd_wnd, psol);
1502 if (AMAP_GET_BITS(struct amap_sol_cqe_v2,
1503 cmd_cmpl, psol))
1504 csol_cqe->i_sts = AMAP_GET_BITS(struct amap_sol_cqe_v2,
1505 i_sts, psol);
1506 else
1507 csol_cqe->i_resp = AMAP_GET_BITS(struct amap_sol_cqe_v2,
1508 i_sts, psol);
1509 if (AMAP_GET_BITS(struct amap_sol_cqe_v2,
1510 u, psol))
1511 csol_cqe->i_flags = ISCSI_FLAG_CMD_UNDERFLOW;
1512
1513 if (AMAP_GET_BITS(struct amap_sol_cqe_v2,
1514 o, psol))
1515 csol_cqe->i_flags |= ISCSI_FLAG_CMD_OVERFLOW;
1516 }
1517 }
1518
1519
hwi_complete_cmd(struct beiscsi_conn * beiscsi_conn,struct beiscsi_hba * phba,struct sol_cqe * psol)1520 static void hwi_complete_cmd(struct beiscsi_conn *beiscsi_conn,
1521 struct beiscsi_hba *phba, struct sol_cqe *psol)
1522 {
1523 struct hwi_wrb_context *pwrb_context;
1524 struct wrb_handle *pwrb_handle;
1525 struct iscsi_wrb *pwrb = NULL;
1526 struct hwi_controller *phwi_ctrlr;
1527 struct iscsi_task *task;
1528 unsigned int type;
1529 struct iscsi_conn *conn = beiscsi_conn->conn;
1530 struct iscsi_session *session = conn->session;
1531 struct common_sol_cqe csol_cqe = {0};
1532 uint16_t cri_index = 0;
1533
1534 phwi_ctrlr = phba->phwi_ctrlr;
1535
1536 /* Copy the elements to a common structure */
1537 adapter_get_sol_cqe(phba, psol, &csol_cqe);
1538
1539 cri_index = BE_GET_CRI_FROM_CID(csol_cqe.cid);
1540 pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
1541
1542 pwrb_handle = pwrb_context->pwrb_handle_basestd[
1543 csol_cqe.wrb_index];
1544
1545 task = pwrb_handle->pio_handle;
1546 pwrb = pwrb_handle->pwrb;
1547 type = ((struct beiscsi_io_task *)task->dd_data)->wrb_type;
1548
1549 spin_lock_bh(&session->back_lock);
1550 switch (type) {
1551 case HWH_TYPE_IO:
1552 case HWH_TYPE_IO_RD:
1553 if ((task->hdr->opcode & ISCSI_OPCODE_MASK) ==
1554 ISCSI_OP_NOOP_OUT)
1555 be_complete_nopin_resp(beiscsi_conn, task, &csol_cqe);
1556 else
1557 be_complete_io(beiscsi_conn, task, &csol_cqe);
1558 break;
1559
1560 case HWH_TYPE_LOGOUT:
1561 if ((task->hdr->opcode & ISCSI_OPCODE_MASK) == ISCSI_OP_LOGOUT)
1562 be_complete_logout(beiscsi_conn, task, &csol_cqe);
1563 else
1564 be_complete_tmf(beiscsi_conn, task, &csol_cqe);
1565 break;
1566
1567 case HWH_TYPE_LOGIN:
1568 beiscsi_log(phba, KERN_ERR,
1569 BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,
1570 "BM_%d :\t\t No HWH_TYPE_LOGIN Expected in"
1571 " hwi_complete_cmd- Solicited path\n");
1572 break;
1573
1574 case HWH_TYPE_NOP:
1575 be_complete_nopin_resp(beiscsi_conn, task, &csol_cqe);
1576 break;
1577
1578 default:
1579 beiscsi_log(phba, KERN_WARNING,
1580 BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,
1581 "BM_%d : In hwi_complete_cmd, unknown type = %d"
1582 "wrb_index 0x%x CID 0x%x\n", type,
1583 csol_cqe.wrb_index,
1584 csol_cqe.cid);
1585 break;
1586 }
1587
1588 spin_unlock_bh(&session->back_lock);
1589 }
1590
hwi_get_async_busy_list(struct hwi_async_pdu_context * pasync_ctx,unsigned int is_header,unsigned int host_write_ptr)1591 static struct list_head *hwi_get_async_busy_list(struct hwi_async_pdu_context
1592 *pasync_ctx, unsigned int is_header,
1593 unsigned int host_write_ptr)
1594 {
1595 if (is_header)
1596 return &pasync_ctx->async_entry[host_write_ptr].
1597 header_busy_list;
1598 else
1599 return &pasync_ctx->async_entry[host_write_ptr].data_busy_list;
1600 }
1601
1602 static struct async_pdu_handle *
hwi_get_async_handle(struct beiscsi_hba * phba,struct beiscsi_conn * beiscsi_conn,struct hwi_async_pdu_context * pasync_ctx,struct i_t_dpdu_cqe * pdpdu_cqe,unsigned int * pcq_index)1603 hwi_get_async_handle(struct beiscsi_hba *phba,
1604 struct beiscsi_conn *beiscsi_conn,
1605 struct hwi_async_pdu_context *pasync_ctx,
1606 struct i_t_dpdu_cqe *pdpdu_cqe, unsigned int *pcq_index)
1607 {
1608 struct be_bus_address phys_addr;
1609 struct list_head *pbusy_list;
1610 struct async_pdu_handle *pasync_handle = NULL;
1611 unsigned char is_header = 0;
1612 unsigned int index, dpl;
1613
1614 if (is_chip_be2_be3r(phba)) {
1615 dpl = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe,
1616 dpl, pdpdu_cqe);
1617 index = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe,
1618 index, pdpdu_cqe);
1619 } else {
1620 dpl = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe_v2,
1621 dpl, pdpdu_cqe);
1622 index = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe_v2,
1623 index, pdpdu_cqe);
1624 }
1625
1626 phys_addr.u.a32.address_lo =
1627 (pdpdu_cqe->dw[offsetof(struct amap_i_t_dpdu_cqe,
1628 db_addr_lo) / 32] - dpl);
1629 phys_addr.u.a32.address_hi =
1630 pdpdu_cqe->dw[offsetof(struct amap_i_t_dpdu_cqe,
1631 db_addr_hi) / 32];
1632
1633 phys_addr.u.a64.address =
1634 *((unsigned long long *)(&phys_addr.u.a64.address));
1635
1636 switch (pdpdu_cqe->dw[offsetof(struct amap_i_t_dpdu_cqe, code) / 32]
1637 & PDUCQE_CODE_MASK) {
1638 case UNSOL_HDR_NOTIFY:
1639 is_header = 1;
1640
1641 pbusy_list = hwi_get_async_busy_list(pasync_ctx,
1642 is_header, index);
1643 break;
1644 case UNSOL_DATA_NOTIFY:
1645 pbusy_list = hwi_get_async_busy_list(pasync_ctx,
1646 is_header, index);
1647 break;
1648 default:
1649 pbusy_list = NULL;
1650 beiscsi_log(phba, KERN_WARNING,
1651 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
1652 "BM_%d : Unexpected code=%d\n",
1653 pdpdu_cqe->dw[offsetof(struct amap_i_t_dpdu_cqe,
1654 code) / 32] & PDUCQE_CODE_MASK);
1655 return NULL;
1656 }
1657
1658 WARN_ON(list_empty(pbusy_list));
1659 list_for_each_entry(pasync_handle, pbusy_list, link) {
1660 if (pasync_handle->pa.u.a64.address == phys_addr.u.a64.address)
1661 break;
1662 }
1663
1664 WARN_ON(!pasync_handle);
1665
1666 pasync_handle->cri = BE_GET_ASYNC_CRI_FROM_CID(
1667 beiscsi_conn->beiscsi_conn_cid);
1668 pasync_handle->is_header = is_header;
1669 pasync_handle->buffer_len = dpl;
1670 *pcq_index = index;
1671
1672 return pasync_handle;
1673 }
1674
1675 static unsigned int
hwi_update_async_writables(struct beiscsi_hba * phba,struct hwi_async_pdu_context * pasync_ctx,unsigned int is_header,unsigned int cq_index)1676 hwi_update_async_writables(struct beiscsi_hba *phba,
1677 struct hwi_async_pdu_context *pasync_ctx,
1678 unsigned int is_header, unsigned int cq_index)
1679 {
1680 struct list_head *pbusy_list;
1681 struct async_pdu_handle *pasync_handle;
1682 unsigned int num_entries, writables = 0;
1683 unsigned int *pep_read_ptr, *pwritables;
1684
1685 num_entries = pasync_ctx->num_entries;
1686 if (is_header) {
1687 pep_read_ptr = &pasync_ctx->async_header.ep_read_ptr;
1688 pwritables = &pasync_ctx->async_header.writables;
1689 } else {
1690 pep_read_ptr = &pasync_ctx->async_data.ep_read_ptr;
1691 pwritables = &pasync_ctx->async_data.writables;
1692 }
1693
1694 while ((*pep_read_ptr) != cq_index) {
1695 (*pep_read_ptr)++;
1696 *pep_read_ptr = (*pep_read_ptr) % num_entries;
1697
1698 pbusy_list = hwi_get_async_busy_list(pasync_ctx, is_header,
1699 *pep_read_ptr);
1700 if (writables == 0)
1701 WARN_ON(list_empty(pbusy_list));
1702
1703 if (!list_empty(pbusy_list)) {
1704 pasync_handle = list_entry(pbusy_list->next,
1705 struct async_pdu_handle,
1706 link);
1707 WARN_ON(!pasync_handle);
1708 pasync_handle->consumed = 1;
1709 }
1710
1711 writables++;
1712 }
1713
1714 if (!writables) {
1715 beiscsi_log(phba, KERN_ERR,
1716 BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,
1717 "BM_%d : Duplicate notification received - index 0x%x!!\n",
1718 cq_index);
1719 WARN_ON(1);
1720 }
1721
1722 *pwritables = *pwritables + writables;
1723 return 0;
1724 }
1725
hwi_free_async_msg(struct beiscsi_hba * phba,struct hwi_async_pdu_context * pasync_ctx,unsigned int cri)1726 static void hwi_free_async_msg(struct beiscsi_hba *phba,
1727 struct hwi_async_pdu_context *pasync_ctx,
1728 unsigned int cri)
1729 {
1730 struct async_pdu_handle *pasync_handle, *tmp_handle;
1731 struct list_head *plist;
1732
1733 plist = &pasync_ctx->async_entry[cri].wait_queue.list;
1734 list_for_each_entry_safe(pasync_handle, tmp_handle, plist, link) {
1735 list_del(&pasync_handle->link);
1736
1737 if (pasync_handle->is_header) {
1738 list_add_tail(&pasync_handle->link,
1739 &pasync_ctx->async_header.free_list);
1740 pasync_ctx->async_header.free_entries++;
1741 } else {
1742 list_add_tail(&pasync_handle->link,
1743 &pasync_ctx->async_data.free_list);
1744 pasync_ctx->async_data.free_entries++;
1745 }
1746 }
1747
1748 INIT_LIST_HEAD(&pasync_ctx->async_entry[cri].wait_queue.list);
1749 pasync_ctx->async_entry[cri].wait_queue.hdr_received = 0;
1750 pasync_ctx->async_entry[cri].wait_queue.bytes_received = 0;
1751 }
1752
1753 static struct phys_addr *
hwi_get_ring_address(struct hwi_async_pdu_context * pasync_ctx,unsigned int is_header,unsigned int host_write_ptr)1754 hwi_get_ring_address(struct hwi_async_pdu_context *pasync_ctx,
1755 unsigned int is_header, unsigned int host_write_ptr)
1756 {
1757 struct phys_addr *pasync_sge = NULL;
1758
1759 if (is_header)
1760 pasync_sge = pasync_ctx->async_header.ring_base;
1761 else
1762 pasync_sge = pasync_ctx->async_data.ring_base;
1763
1764 return pasync_sge + host_write_ptr;
1765 }
1766
hwi_post_async_buffers(struct beiscsi_hba * phba,unsigned int is_header,uint8_t ulp_num)1767 static void hwi_post_async_buffers(struct beiscsi_hba *phba,
1768 unsigned int is_header, uint8_t ulp_num)
1769 {
1770 struct hwi_controller *phwi_ctrlr;
1771 struct hwi_async_pdu_context *pasync_ctx;
1772 struct async_pdu_handle *pasync_handle;
1773 struct list_head *pfree_link, *pbusy_list;
1774 struct phys_addr *pasync_sge;
1775 unsigned int ring_id, num_entries;
1776 unsigned int host_write_num, doorbell_offset;
1777 unsigned int writables;
1778 unsigned int i = 0;
1779 u32 doorbell = 0;
1780
1781 phwi_ctrlr = phba->phwi_ctrlr;
1782 pasync_ctx = HWI_GET_ASYNC_PDU_CTX(phwi_ctrlr, ulp_num);
1783 num_entries = pasync_ctx->num_entries;
1784
1785 if (is_header) {
1786 writables = min(pasync_ctx->async_header.writables,
1787 pasync_ctx->async_header.free_entries);
1788 pfree_link = pasync_ctx->async_header.free_list.next;
1789 host_write_num = pasync_ctx->async_header.host_write_ptr;
1790 ring_id = phwi_ctrlr->default_pdu_hdr[ulp_num].id;
1791 doorbell_offset = phwi_ctrlr->default_pdu_hdr[ulp_num].
1792 doorbell_offset;
1793 } else {
1794 writables = min(pasync_ctx->async_data.writables,
1795 pasync_ctx->async_data.free_entries);
1796 pfree_link = pasync_ctx->async_data.free_list.next;
1797 host_write_num = pasync_ctx->async_data.host_write_ptr;
1798 ring_id = phwi_ctrlr->default_pdu_data[ulp_num].id;
1799 doorbell_offset = phwi_ctrlr->default_pdu_data[ulp_num].
1800 doorbell_offset;
1801 }
1802
1803 writables = (writables / 8) * 8;
1804 if (writables) {
1805 for (i = 0; i < writables; i++) {
1806 pbusy_list =
1807 hwi_get_async_busy_list(pasync_ctx, is_header,
1808 host_write_num);
1809 pasync_handle =
1810 list_entry(pfree_link, struct async_pdu_handle,
1811 link);
1812 WARN_ON(!pasync_handle);
1813 pasync_handle->consumed = 0;
1814
1815 pfree_link = pfree_link->next;
1816
1817 pasync_sge = hwi_get_ring_address(pasync_ctx,
1818 is_header, host_write_num);
1819
1820 pasync_sge->hi = pasync_handle->pa.u.a32.address_lo;
1821 pasync_sge->lo = pasync_handle->pa.u.a32.address_hi;
1822
1823 list_move(&pasync_handle->link, pbusy_list);
1824
1825 host_write_num++;
1826 host_write_num = host_write_num % num_entries;
1827 }
1828
1829 if (is_header) {
1830 pasync_ctx->async_header.host_write_ptr =
1831 host_write_num;
1832 pasync_ctx->async_header.free_entries -= writables;
1833 pasync_ctx->async_header.writables -= writables;
1834 pasync_ctx->async_header.busy_entries += writables;
1835 } else {
1836 pasync_ctx->async_data.host_write_ptr = host_write_num;
1837 pasync_ctx->async_data.free_entries -= writables;
1838 pasync_ctx->async_data.writables -= writables;
1839 pasync_ctx->async_data.busy_entries += writables;
1840 }
1841
1842 doorbell |= ring_id & DB_DEF_PDU_RING_ID_MASK;
1843 doorbell |= 1 << DB_DEF_PDU_REARM_SHIFT;
1844 doorbell |= 0 << DB_DEF_PDU_EVENT_SHIFT;
1845 doorbell |= (writables & DB_DEF_PDU_CQPROC_MASK)
1846 << DB_DEF_PDU_CQPROC_SHIFT;
1847
1848 iowrite32(doorbell, phba->db_va + doorbell_offset);
1849 }
1850 }
1851
hwi_flush_default_pdu_buffer(struct beiscsi_hba * phba,struct beiscsi_conn * beiscsi_conn,struct i_t_dpdu_cqe * pdpdu_cqe)1852 static void hwi_flush_default_pdu_buffer(struct beiscsi_hba *phba,
1853 struct beiscsi_conn *beiscsi_conn,
1854 struct i_t_dpdu_cqe *pdpdu_cqe)
1855 {
1856 struct hwi_controller *phwi_ctrlr;
1857 struct hwi_async_pdu_context *pasync_ctx;
1858 struct async_pdu_handle *pasync_handle = NULL;
1859 unsigned int cq_index = -1;
1860 uint16_t cri_index = BE_GET_CRI_FROM_CID(
1861 beiscsi_conn->beiscsi_conn_cid);
1862
1863 phwi_ctrlr = phba->phwi_ctrlr;
1864 pasync_ctx = HWI_GET_ASYNC_PDU_CTX(phwi_ctrlr,
1865 BEISCSI_GET_ULP_FROM_CRI(phwi_ctrlr,
1866 cri_index));
1867
1868 pasync_handle = hwi_get_async_handle(phba, beiscsi_conn, pasync_ctx,
1869 pdpdu_cqe, &cq_index);
1870 BUG_ON(pasync_handle->is_header != 0);
1871 if (pasync_handle->consumed == 0)
1872 hwi_update_async_writables(phba, pasync_ctx,
1873 pasync_handle->is_header, cq_index);
1874
1875 hwi_free_async_msg(phba, pasync_ctx, pasync_handle->cri);
1876 hwi_post_async_buffers(phba, pasync_handle->is_header,
1877 BEISCSI_GET_ULP_FROM_CRI(phwi_ctrlr,
1878 cri_index));
1879 }
1880
1881 static unsigned int
hwi_fwd_async_msg(struct beiscsi_conn * beiscsi_conn,struct beiscsi_hba * phba,struct hwi_async_pdu_context * pasync_ctx,unsigned short cri)1882 hwi_fwd_async_msg(struct beiscsi_conn *beiscsi_conn,
1883 struct beiscsi_hba *phba,
1884 struct hwi_async_pdu_context *pasync_ctx, unsigned short cri)
1885 {
1886 struct list_head *plist;
1887 struct async_pdu_handle *pasync_handle;
1888 void *phdr = NULL;
1889 unsigned int hdr_len = 0, buf_len = 0;
1890 unsigned int status, index = 0, offset = 0;
1891 void *pfirst_buffer = NULL;
1892 unsigned int num_buf = 0;
1893
1894 plist = &pasync_ctx->async_entry[cri].wait_queue.list;
1895
1896 list_for_each_entry(pasync_handle, plist, link) {
1897 if (index == 0) {
1898 phdr = pasync_handle->pbuffer;
1899 hdr_len = pasync_handle->buffer_len;
1900 } else {
1901 buf_len = pasync_handle->buffer_len;
1902 if (!num_buf) {
1903 pfirst_buffer = pasync_handle->pbuffer;
1904 num_buf++;
1905 }
1906 memcpy(pfirst_buffer + offset,
1907 pasync_handle->pbuffer, buf_len);
1908 offset += buf_len;
1909 }
1910 index++;
1911 }
1912
1913 status = beiscsi_process_async_pdu(beiscsi_conn, phba,
1914 phdr, hdr_len, pfirst_buffer,
1915 offset);
1916
1917 hwi_free_async_msg(phba, pasync_ctx, cri);
1918 return 0;
1919 }
1920
1921 static unsigned int
hwi_gather_async_pdu(struct beiscsi_conn * beiscsi_conn,struct beiscsi_hba * phba,struct async_pdu_handle * pasync_handle)1922 hwi_gather_async_pdu(struct beiscsi_conn *beiscsi_conn,
1923 struct beiscsi_hba *phba,
1924 struct async_pdu_handle *pasync_handle)
1925 {
1926 struct hwi_async_pdu_context *pasync_ctx;
1927 struct hwi_controller *phwi_ctrlr;
1928 unsigned int bytes_needed = 0, status = 0;
1929 unsigned short cri = pasync_handle->cri;
1930 struct pdu_base *ppdu;
1931
1932 phwi_ctrlr = phba->phwi_ctrlr;
1933 pasync_ctx = HWI_GET_ASYNC_PDU_CTX(phwi_ctrlr,
1934 BEISCSI_GET_ULP_FROM_CRI(phwi_ctrlr,
1935 BE_GET_CRI_FROM_CID(beiscsi_conn->
1936 beiscsi_conn_cid)));
1937
1938 list_del(&pasync_handle->link);
1939 if (pasync_handle->is_header) {
1940 pasync_ctx->async_header.busy_entries--;
1941 if (pasync_ctx->async_entry[cri].wait_queue.hdr_received) {
1942 hwi_free_async_msg(phba, pasync_ctx, cri);
1943 BUG();
1944 }
1945
1946 pasync_ctx->async_entry[cri].wait_queue.bytes_received = 0;
1947 pasync_ctx->async_entry[cri].wait_queue.hdr_received = 1;
1948 pasync_ctx->async_entry[cri].wait_queue.hdr_len =
1949 (unsigned short)pasync_handle->buffer_len;
1950 list_add_tail(&pasync_handle->link,
1951 &pasync_ctx->async_entry[cri].wait_queue.list);
1952
1953 ppdu = pasync_handle->pbuffer;
1954 bytes_needed = ((((ppdu->dw[offsetof(struct amap_pdu_base,
1955 data_len_hi) / 32] & PDUBASE_DATALENHI_MASK) << 8) &
1956 0xFFFF0000) | ((be16_to_cpu((ppdu->
1957 dw[offsetof(struct amap_pdu_base, data_len_lo) / 32]
1958 & PDUBASE_DATALENLO_MASK) >> 16)) & 0x0000FFFF));
1959
1960 if (status == 0) {
1961 pasync_ctx->async_entry[cri].wait_queue.bytes_needed =
1962 bytes_needed;
1963
1964 if (bytes_needed == 0)
1965 status = hwi_fwd_async_msg(beiscsi_conn, phba,
1966 pasync_ctx, cri);
1967 }
1968 } else {
1969 pasync_ctx->async_data.busy_entries--;
1970 if (pasync_ctx->async_entry[cri].wait_queue.hdr_received) {
1971 list_add_tail(&pasync_handle->link,
1972 &pasync_ctx->async_entry[cri].wait_queue.
1973 list);
1974 pasync_ctx->async_entry[cri].wait_queue.
1975 bytes_received +=
1976 (unsigned short)pasync_handle->buffer_len;
1977
1978 if (pasync_ctx->async_entry[cri].wait_queue.
1979 bytes_received >=
1980 pasync_ctx->async_entry[cri].wait_queue.
1981 bytes_needed)
1982 status = hwi_fwd_async_msg(beiscsi_conn, phba,
1983 pasync_ctx, cri);
1984 }
1985 }
1986 return status;
1987 }
1988
hwi_process_default_pdu_ring(struct beiscsi_conn * beiscsi_conn,struct beiscsi_hba * phba,struct i_t_dpdu_cqe * pdpdu_cqe)1989 static void hwi_process_default_pdu_ring(struct beiscsi_conn *beiscsi_conn,
1990 struct beiscsi_hba *phba,
1991 struct i_t_dpdu_cqe *pdpdu_cqe)
1992 {
1993 struct hwi_controller *phwi_ctrlr;
1994 struct hwi_async_pdu_context *pasync_ctx;
1995 struct async_pdu_handle *pasync_handle = NULL;
1996 unsigned int cq_index = -1;
1997 uint16_t cri_index = BE_GET_CRI_FROM_CID(
1998 beiscsi_conn->beiscsi_conn_cid);
1999
2000 phwi_ctrlr = phba->phwi_ctrlr;
2001 pasync_ctx = HWI_GET_ASYNC_PDU_CTX(phwi_ctrlr,
2002 BEISCSI_GET_ULP_FROM_CRI(phwi_ctrlr,
2003 cri_index));
2004
2005 pasync_handle = hwi_get_async_handle(phba, beiscsi_conn, pasync_ctx,
2006 pdpdu_cqe, &cq_index);
2007
2008 if (pasync_handle->consumed == 0)
2009 hwi_update_async_writables(phba, pasync_ctx,
2010 pasync_handle->is_header, cq_index);
2011
2012 hwi_gather_async_pdu(beiscsi_conn, phba, pasync_handle);
2013 hwi_post_async_buffers(phba, pasync_handle->is_header,
2014 BEISCSI_GET_ULP_FROM_CRI(
2015 phwi_ctrlr, cri_index));
2016 }
2017
beiscsi_process_mcc_isr(struct beiscsi_hba * phba)2018 static void beiscsi_process_mcc_isr(struct beiscsi_hba *phba)
2019 {
2020 struct be_queue_info *mcc_cq;
2021 struct be_mcc_compl *mcc_compl;
2022 unsigned int num_processed = 0;
2023
2024 mcc_cq = &phba->ctrl.mcc_obj.cq;
2025 mcc_compl = queue_tail_node(mcc_cq);
2026 mcc_compl->flags = le32_to_cpu(mcc_compl->flags);
2027 while (mcc_compl->flags & CQE_FLAGS_VALID_MASK) {
2028
2029 if (num_processed >= 32) {
2030 hwi_ring_cq_db(phba, mcc_cq->id,
2031 num_processed, 0, 0);
2032 num_processed = 0;
2033 }
2034 if (mcc_compl->flags & CQE_FLAGS_ASYNC_MASK) {
2035 /* Interpret flags as an async trailer */
2036 if (is_link_state_evt(mcc_compl->flags))
2037 /* Interpret compl as a async link evt */
2038 beiscsi_async_link_state_process(phba,
2039 (struct be_async_event_link_state *) mcc_compl);
2040 else
2041 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_MBOX,
2042 "BM_%d : Unsupported Async Event, flags"
2043 " = 0x%08x\n",
2044 mcc_compl->flags);
2045 } else if (mcc_compl->flags & CQE_FLAGS_COMPLETED_MASK) {
2046 be_mcc_compl_process_isr(&phba->ctrl, mcc_compl);
2047 atomic_dec(&phba->ctrl.mcc_obj.q.used);
2048 }
2049
2050 mcc_compl->flags = 0;
2051 queue_tail_inc(mcc_cq);
2052 mcc_compl = queue_tail_node(mcc_cq);
2053 mcc_compl->flags = le32_to_cpu(mcc_compl->flags);
2054 num_processed++;
2055 }
2056
2057 if (num_processed > 0)
2058 hwi_ring_cq_db(phba, mcc_cq->id, num_processed, 1, 0);
2059
2060 }
2061
2062 /**
2063 * beiscsi_process_cq()- Process the Completion Queue
2064 * @pbe_eq: Event Q on which the Completion has come
2065 *
2066 * return
2067 * Number of Completion Entries processed.
2068 **/
beiscsi_process_cq(struct be_eq_obj * pbe_eq)2069 unsigned int beiscsi_process_cq(struct be_eq_obj *pbe_eq)
2070 {
2071 struct be_queue_info *cq;
2072 struct sol_cqe *sol;
2073 struct dmsg_cqe *dmsg;
2074 unsigned int num_processed = 0;
2075 unsigned int tot_nump = 0;
2076 unsigned short code = 0, cid = 0;
2077 uint16_t cri_index = 0;
2078 struct beiscsi_conn *beiscsi_conn;
2079 struct beiscsi_endpoint *beiscsi_ep;
2080 struct iscsi_endpoint *ep;
2081 struct beiscsi_hba *phba;
2082
2083 cq = pbe_eq->cq;
2084 sol = queue_tail_node(cq);
2085 phba = pbe_eq->phba;
2086
2087 while (sol->dw[offsetof(struct amap_sol_cqe, valid) / 32] &
2088 CQE_VALID_MASK) {
2089 be_dws_le_to_cpu(sol, sizeof(struct sol_cqe));
2090
2091 code = (sol->dw[offsetof(struct amap_sol_cqe, code) /
2092 32] & CQE_CODE_MASK);
2093
2094 /* Get the CID */
2095 if (is_chip_be2_be3r(phba)) {
2096 cid = AMAP_GET_BITS(struct amap_sol_cqe, cid, sol);
2097 } else {
2098 if ((code == DRIVERMSG_NOTIFY) ||
2099 (code == UNSOL_HDR_NOTIFY) ||
2100 (code == UNSOL_DATA_NOTIFY))
2101 cid = AMAP_GET_BITS(
2102 struct amap_i_t_dpdu_cqe_v2,
2103 cid, sol);
2104 else
2105 cid = AMAP_GET_BITS(struct amap_sol_cqe_v2,
2106 cid, sol);
2107 }
2108
2109 cri_index = BE_GET_CRI_FROM_CID(cid);
2110 ep = phba->ep_array[cri_index];
2111
2112 if (ep == NULL) {
2113 /* connection has already been freed
2114 * just move on to next one
2115 */
2116 beiscsi_log(phba, KERN_WARNING,
2117 BEISCSI_LOG_INIT,
2118 "BM_%d : proc cqe of disconn ep: cid %d\n",
2119 cid);
2120 goto proc_next_cqe;
2121 }
2122
2123 beiscsi_ep = ep->dd_data;
2124 beiscsi_conn = beiscsi_ep->conn;
2125
2126 if (num_processed >= 32) {
2127 hwi_ring_cq_db(phba, cq->id,
2128 num_processed, 0, 0);
2129 tot_nump += num_processed;
2130 num_processed = 0;
2131 }
2132
2133 switch (code) {
2134 case SOL_CMD_COMPLETE:
2135 hwi_complete_cmd(beiscsi_conn, phba, sol);
2136 break;
2137 case DRIVERMSG_NOTIFY:
2138 beiscsi_log(phba, KERN_INFO,
2139 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
2140 "BM_%d : Received %s[%d] on CID : %d\n",
2141 cqe_desc[code], code, cid);
2142
2143 dmsg = (struct dmsg_cqe *)sol;
2144 hwi_complete_drvr_msgs(beiscsi_conn, phba, sol);
2145 break;
2146 case UNSOL_HDR_NOTIFY:
2147 beiscsi_log(phba, KERN_INFO,
2148 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
2149 "BM_%d : Received %s[%d] on CID : %d\n",
2150 cqe_desc[code], code, cid);
2151
2152 spin_lock_bh(&phba->async_pdu_lock);
2153 hwi_process_default_pdu_ring(beiscsi_conn, phba,
2154 (struct i_t_dpdu_cqe *)sol);
2155 spin_unlock_bh(&phba->async_pdu_lock);
2156 break;
2157 case UNSOL_DATA_NOTIFY:
2158 beiscsi_log(phba, KERN_INFO,
2159 BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,
2160 "BM_%d : Received %s[%d] on CID : %d\n",
2161 cqe_desc[code], code, cid);
2162
2163 spin_lock_bh(&phba->async_pdu_lock);
2164 hwi_process_default_pdu_ring(beiscsi_conn, phba,
2165 (struct i_t_dpdu_cqe *)sol);
2166 spin_unlock_bh(&phba->async_pdu_lock);
2167 break;
2168 case CXN_INVALIDATE_INDEX_NOTIFY:
2169 case CMD_INVALIDATED_NOTIFY:
2170 case CXN_INVALIDATE_NOTIFY:
2171 beiscsi_log(phba, KERN_ERR,
2172 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
2173 "BM_%d : Ignoring %s[%d] on CID : %d\n",
2174 cqe_desc[code], code, cid);
2175 break;
2176 case SOL_CMD_KILLED_DATA_DIGEST_ERR:
2177 case CMD_KILLED_INVALID_STATSN_RCVD:
2178 case CMD_KILLED_INVALID_R2T_RCVD:
2179 case CMD_CXN_KILLED_LUN_INVALID:
2180 case CMD_CXN_KILLED_ICD_INVALID:
2181 case CMD_CXN_KILLED_ITT_INVALID:
2182 case CMD_CXN_KILLED_SEQ_OUTOFORDER:
2183 case CMD_CXN_KILLED_INVALID_DATASN_RCVD:
2184 beiscsi_log(phba, KERN_ERR,
2185 BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,
2186 "BM_%d : Cmd Notification %s[%d] on CID : %d\n",
2187 cqe_desc[code], code, cid);
2188 break;
2189 case UNSOL_DATA_DIGEST_ERROR_NOTIFY:
2190 beiscsi_log(phba, KERN_ERR,
2191 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
2192 "BM_%d : Dropping %s[%d] on DPDU ring on CID : %d\n",
2193 cqe_desc[code], code, cid);
2194 spin_lock_bh(&phba->async_pdu_lock);
2195 hwi_flush_default_pdu_buffer(phba, beiscsi_conn,
2196 (struct i_t_dpdu_cqe *) sol);
2197 spin_unlock_bh(&phba->async_pdu_lock);
2198 break;
2199 case CXN_KILLED_PDU_SIZE_EXCEEDS_DSL:
2200 case CXN_KILLED_BURST_LEN_MISMATCH:
2201 case CXN_KILLED_AHS_RCVD:
2202 case CXN_KILLED_HDR_DIGEST_ERR:
2203 case CXN_KILLED_UNKNOWN_HDR:
2204 case CXN_KILLED_STALE_ITT_TTT_RCVD:
2205 case CXN_KILLED_INVALID_ITT_TTT_RCVD:
2206 case CXN_KILLED_TIMED_OUT:
2207 case CXN_KILLED_FIN_RCVD:
2208 case CXN_KILLED_RST_SENT:
2209 case CXN_KILLED_RST_RCVD:
2210 case CXN_KILLED_BAD_UNSOL_PDU_RCVD:
2211 case CXN_KILLED_BAD_WRB_INDEX_ERROR:
2212 case CXN_KILLED_OVER_RUN_RESIDUAL:
2213 case CXN_KILLED_UNDER_RUN_RESIDUAL:
2214 case CXN_KILLED_CMND_DATA_NOT_ON_SAME_CONN:
2215 beiscsi_log(phba, KERN_ERR,
2216 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
2217 "BM_%d : Event %s[%d] received on CID : %d\n",
2218 cqe_desc[code], code, cid);
2219 if (beiscsi_conn)
2220 iscsi_conn_failure(beiscsi_conn->conn,
2221 ISCSI_ERR_CONN_FAILED);
2222 break;
2223 default:
2224 beiscsi_log(phba, KERN_ERR,
2225 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
2226 "BM_%d : Invalid CQE Event Received Code : %d"
2227 "CID 0x%x...\n",
2228 code, cid);
2229 break;
2230 }
2231
2232 proc_next_cqe:
2233 AMAP_SET_BITS(struct amap_sol_cqe, valid, sol, 0);
2234 queue_tail_inc(cq);
2235 sol = queue_tail_node(cq);
2236 num_processed++;
2237 }
2238
2239 if (num_processed > 0) {
2240 tot_nump += num_processed;
2241 hwi_ring_cq_db(phba, cq->id, num_processed, 1, 0);
2242 }
2243 return tot_nump;
2244 }
2245
beiscsi_process_all_cqs(struct work_struct * work)2246 void beiscsi_process_all_cqs(struct work_struct *work)
2247 {
2248 unsigned long flags;
2249 struct hwi_controller *phwi_ctrlr;
2250 struct hwi_context_memory *phwi_context;
2251 struct beiscsi_hba *phba;
2252 struct be_eq_obj *pbe_eq =
2253 container_of(work, struct be_eq_obj, work_cqs);
2254
2255 phba = pbe_eq->phba;
2256 phwi_ctrlr = phba->phwi_ctrlr;
2257 phwi_context = phwi_ctrlr->phwi_ctxt;
2258
2259 if (pbe_eq->todo_mcc_cq) {
2260 spin_lock_irqsave(&phba->isr_lock, flags);
2261 pbe_eq->todo_mcc_cq = false;
2262 spin_unlock_irqrestore(&phba->isr_lock, flags);
2263 beiscsi_process_mcc_isr(phba);
2264 }
2265
2266 if (pbe_eq->todo_cq) {
2267 spin_lock_irqsave(&phba->isr_lock, flags);
2268 pbe_eq->todo_cq = false;
2269 spin_unlock_irqrestore(&phba->isr_lock, flags);
2270 beiscsi_process_cq(pbe_eq);
2271 }
2272
2273 /* rearm EQ for further interrupts */
2274 hwi_ring_eq_db(phba, pbe_eq->q.id, 0, 0, 1, 1);
2275 }
2276
be_iopoll(struct blk_iopoll * iop,int budget)2277 static int be_iopoll(struct blk_iopoll *iop, int budget)
2278 {
2279 unsigned int ret;
2280 struct beiscsi_hba *phba;
2281 struct be_eq_obj *pbe_eq;
2282
2283 pbe_eq = container_of(iop, struct be_eq_obj, iopoll);
2284 ret = beiscsi_process_cq(pbe_eq);
2285 pbe_eq->cq_count += ret;
2286 if (ret < budget) {
2287 phba = pbe_eq->phba;
2288 blk_iopoll_complete(iop);
2289 beiscsi_log(phba, KERN_INFO,
2290 BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,
2291 "BM_%d : rearm pbe_eq->q.id =%d\n",
2292 pbe_eq->q.id);
2293 hwi_ring_eq_db(phba, pbe_eq->q.id, 0, 0, 1, 1);
2294 }
2295 return ret;
2296 }
2297
2298 static void
hwi_write_sgl_v2(struct iscsi_wrb * pwrb,struct scatterlist * sg,unsigned int num_sg,struct beiscsi_io_task * io_task)2299 hwi_write_sgl_v2(struct iscsi_wrb *pwrb, struct scatterlist *sg,
2300 unsigned int num_sg, struct beiscsi_io_task *io_task)
2301 {
2302 struct iscsi_sge *psgl;
2303 unsigned int sg_len, index;
2304 unsigned int sge_len = 0;
2305 unsigned long long addr;
2306 struct scatterlist *l_sg;
2307 unsigned int offset;
2308
2309 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, iscsi_bhs_addr_lo, pwrb,
2310 io_task->bhs_pa.u.a32.address_lo);
2311 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, iscsi_bhs_addr_hi, pwrb,
2312 io_task->bhs_pa.u.a32.address_hi);
2313
2314 l_sg = sg;
2315 for (index = 0; (index < num_sg) && (index < 2); index++,
2316 sg = sg_next(sg)) {
2317 if (index == 0) {
2318 sg_len = sg_dma_len(sg);
2319 addr = (u64) sg_dma_address(sg);
2320 AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
2321 sge0_addr_lo, pwrb,
2322 lower_32_bits(addr));
2323 AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
2324 sge0_addr_hi, pwrb,
2325 upper_32_bits(addr));
2326 AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
2327 sge0_len, pwrb,
2328 sg_len);
2329 sge_len = sg_len;
2330 } else {
2331 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge1_r2t_offset,
2332 pwrb, sge_len);
2333 sg_len = sg_dma_len(sg);
2334 addr = (u64) sg_dma_address(sg);
2335 AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
2336 sge1_addr_lo, pwrb,
2337 lower_32_bits(addr));
2338 AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
2339 sge1_addr_hi, pwrb,
2340 upper_32_bits(addr));
2341 AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
2342 sge1_len, pwrb,
2343 sg_len);
2344 }
2345 }
2346 psgl = (struct iscsi_sge *)io_task->psgl_handle->pfrag;
2347 memset(psgl, 0, sizeof(*psgl) * BE2_SGE);
2348
2349 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, io_task->bhs_len - 2);
2350
2351 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,
2352 io_task->bhs_pa.u.a32.address_hi);
2353 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
2354 io_task->bhs_pa.u.a32.address_lo);
2355
2356 if (num_sg == 1) {
2357 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge0_last, pwrb,
2358 1);
2359 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge1_last, pwrb,
2360 0);
2361 } else if (num_sg == 2) {
2362 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge0_last, pwrb,
2363 0);
2364 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge1_last, pwrb,
2365 1);
2366 } else {
2367 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge0_last, pwrb,
2368 0);
2369 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge1_last, pwrb,
2370 0);
2371 }
2372
2373 sg = l_sg;
2374 psgl++;
2375 psgl++;
2376 offset = 0;
2377 for (index = 0; index < num_sg; index++, sg = sg_next(sg), psgl++) {
2378 sg_len = sg_dma_len(sg);
2379 addr = (u64) sg_dma_address(sg);
2380 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
2381 lower_32_bits(addr));
2382 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,
2383 upper_32_bits(addr));
2384 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, sg_len);
2385 AMAP_SET_BITS(struct amap_iscsi_sge, sge_offset, psgl, offset);
2386 AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 0);
2387 offset += sg_len;
2388 }
2389 psgl--;
2390 AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 1);
2391 }
2392
2393 static void
hwi_write_sgl(struct iscsi_wrb * pwrb,struct scatterlist * sg,unsigned int num_sg,struct beiscsi_io_task * io_task)2394 hwi_write_sgl(struct iscsi_wrb *pwrb, struct scatterlist *sg,
2395 unsigned int num_sg, struct beiscsi_io_task *io_task)
2396 {
2397 struct iscsi_sge *psgl;
2398 unsigned int sg_len, index;
2399 unsigned int sge_len = 0;
2400 unsigned long long addr;
2401 struct scatterlist *l_sg;
2402 unsigned int offset;
2403
2404 AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_lo, pwrb,
2405 io_task->bhs_pa.u.a32.address_lo);
2406 AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_hi, pwrb,
2407 io_task->bhs_pa.u.a32.address_hi);
2408
2409 l_sg = sg;
2410 for (index = 0; (index < num_sg) && (index < 2); index++,
2411 sg = sg_next(sg)) {
2412 if (index == 0) {
2413 sg_len = sg_dma_len(sg);
2414 addr = (u64) sg_dma_address(sg);
2415 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_lo, pwrb,
2416 ((u32)(addr & 0xFFFFFFFF)));
2417 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_hi, pwrb,
2418 ((u32)(addr >> 32)));
2419 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_len, pwrb,
2420 sg_len);
2421 sge_len = sg_len;
2422 } else {
2423 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_r2t_offset,
2424 pwrb, sge_len);
2425 sg_len = sg_dma_len(sg);
2426 addr = (u64) sg_dma_address(sg);
2427 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_addr_lo, pwrb,
2428 ((u32)(addr & 0xFFFFFFFF)));
2429 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_addr_hi, pwrb,
2430 ((u32)(addr >> 32)));
2431 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_len, pwrb,
2432 sg_len);
2433 }
2434 }
2435 psgl = (struct iscsi_sge *)io_task->psgl_handle->pfrag;
2436 memset(psgl, 0, sizeof(*psgl) * BE2_SGE);
2437
2438 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, io_task->bhs_len - 2);
2439
2440 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,
2441 io_task->bhs_pa.u.a32.address_hi);
2442 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
2443 io_task->bhs_pa.u.a32.address_lo);
2444
2445 if (num_sg == 1) {
2446 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb,
2447 1);
2448 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_last, pwrb,
2449 0);
2450 } else if (num_sg == 2) {
2451 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb,
2452 0);
2453 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_last, pwrb,
2454 1);
2455 } else {
2456 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb,
2457 0);
2458 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_last, pwrb,
2459 0);
2460 }
2461 sg = l_sg;
2462 psgl++;
2463 psgl++;
2464 offset = 0;
2465 for (index = 0; index < num_sg; index++, sg = sg_next(sg), psgl++) {
2466 sg_len = sg_dma_len(sg);
2467 addr = (u64) sg_dma_address(sg);
2468 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
2469 (addr & 0xFFFFFFFF));
2470 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,
2471 (addr >> 32));
2472 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, sg_len);
2473 AMAP_SET_BITS(struct amap_iscsi_sge, sge_offset, psgl, offset);
2474 AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 0);
2475 offset += sg_len;
2476 }
2477 psgl--;
2478 AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 1);
2479 }
2480
2481 /**
2482 * hwi_write_buffer()- Populate the WRB with task info
2483 * @pwrb: ptr to the WRB entry
2484 * @task: iscsi task which is to be executed
2485 **/
hwi_write_buffer(struct iscsi_wrb * pwrb,struct iscsi_task * task)2486 static void hwi_write_buffer(struct iscsi_wrb *pwrb, struct iscsi_task *task)
2487 {
2488 struct iscsi_sge *psgl;
2489 struct beiscsi_io_task *io_task = task->dd_data;
2490 struct beiscsi_conn *beiscsi_conn = io_task->conn;
2491 struct beiscsi_hba *phba = beiscsi_conn->phba;
2492 uint8_t dsp_value = 0;
2493
2494 io_task->bhs_len = sizeof(struct be_nonio_bhs) - 2;
2495 AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_lo, pwrb,
2496 io_task->bhs_pa.u.a32.address_lo);
2497 AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_hi, pwrb,
2498 io_task->bhs_pa.u.a32.address_hi);
2499
2500 if (task->data) {
2501
2502 /* Check for the data_count */
2503 dsp_value = (task->data_count) ? 1 : 0;
2504
2505 if (is_chip_be2_be3r(phba))
2506 AMAP_SET_BITS(struct amap_iscsi_wrb, dsp,
2507 pwrb, dsp_value);
2508 else
2509 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, dsp,
2510 pwrb, dsp_value);
2511
2512 /* Map addr only if there is data_count */
2513 if (dsp_value) {
2514 io_task->mtask_addr = pci_map_single(phba->pcidev,
2515 task->data,
2516 task->data_count,
2517 PCI_DMA_TODEVICE);
2518 io_task->mtask_data_count = task->data_count;
2519 } else
2520 io_task->mtask_addr = 0;
2521
2522 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_lo, pwrb,
2523 lower_32_bits(io_task->mtask_addr));
2524 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_hi, pwrb,
2525 upper_32_bits(io_task->mtask_addr));
2526 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_len, pwrb,
2527 task->data_count);
2528
2529 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb, 1);
2530 } else {
2531 AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 0);
2532 io_task->mtask_addr = 0;
2533 }
2534
2535 psgl = (struct iscsi_sge *)io_task->psgl_handle->pfrag;
2536
2537 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, io_task->bhs_len);
2538
2539 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,
2540 io_task->bhs_pa.u.a32.address_hi);
2541 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
2542 io_task->bhs_pa.u.a32.address_lo);
2543 if (task->data) {
2544 psgl++;
2545 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl, 0);
2546 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl, 0);
2547 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, 0);
2548 AMAP_SET_BITS(struct amap_iscsi_sge, sge_offset, psgl, 0);
2549 AMAP_SET_BITS(struct amap_iscsi_sge, rsvd0, psgl, 0);
2550 AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 0);
2551
2552 psgl++;
2553 if (task->data) {
2554 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
2555 lower_32_bits(io_task->mtask_addr));
2556 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,
2557 upper_32_bits(io_task->mtask_addr));
2558 }
2559 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, 0x106);
2560 }
2561 AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 1);
2562 }
2563
2564 /**
2565 * beiscsi_find_mem_req()- Find mem needed
2566 * @phba: ptr to HBA struct
2567 **/
beiscsi_find_mem_req(struct beiscsi_hba * phba)2568 static void beiscsi_find_mem_req(struct beiscsi_hba *phba)
2569 {
2570 uint8_t mem_descr_index, ulp_num;
2571 unsigned int num_cq_pages, num_async_pdu_buf_pages;
2572 unsigned int num_async_pdu_data_pages, wrb_sz_per_cxn;
2573 unsigned int num_async_pdu_buf_sgl_pages, num_async_pdu_data_sgl_pages;
2574
2575 num_cq_pages = PAGES_REQUIRED(phba->params.num_cq_entries * \
2576 sizeof(struct sol_cqe));
2577
2578 phba->params.hwi_ws_sz = sizeof(struct hwi_controller);
2579
2580 phba->mem_req[ISCSI_MEM_GLOBAL_HEADER] = 2 *
2581 BE_ISCSI_PDU_HEADER_SIZE;
2582 phba->mem_req[HWI_MEM_ADDN_CONTEXT] =
2583 sizeof(struct hwi_context_memory);
2584
2585
2586 phba->mem_req[HWI_MEM_WRB] = sizeof(struct iscsi_wrb)
2587 * (phba->params.wrbs_per_cxn)
2588 * phba->params.cxns_per_ctrl;
2589 wrb_sz_per_cxn = sizeof(struct wrb_handle) *
2590 (phba->params.wrbs_per_cxn);
2591 phba->mem_req[HWI_MEM_WRBH] = roundup_pow_of_two((wrb_sz_per_cxn) *
2592 phba->params.cxns_per_ctrl);
2593
2594 phba->mem_req[HWI_MEM_SGLH] = sizeof(struct sgl_handle) *
2595 phba->params.icds_per_ctrl;
2596 phba->mem_req[HWI_MEM_SGE] = sizeof(struct iscsi_sge) *
2597 phba->params.num_sge_per_io * phba->params.icds_per_ctrl;
2598 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
2599 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
2600
2601 num_async_pdu_buf_sgl_pages =
2602 PAGES_REQUIRED(BEISCSI_GET_CID_COUNT(
2603 phba, ulp_num) *
2604 sizeof(struct phys_addr));
2605
2606 num_async_pdu_buf_pages =
2607 PAGES_REQUIRED(BEISCSI_GET_CID_COUNT(
2608 phba, ulp_num) *
2609 phba->params.defpdu_hdr_sz);
2610
2611 num_async_pdu_data_pages =
2612 PAGES_REQUIRED(BEISCSI_GET_CID_COUNT(
2613 phba, ulp_num) *
2614 phba->params.defpdu_data_sz);
2615
2616 num_async_pdu_data_sgl_pages =
2617 PAGES_REQUIRED(BEISCSI_GET_CID_COUNT(
2618 phba, ulp_num) *
2619 sizeof(struct phys_addr));
2620
2621 mem_descr_index = (HWI_MEM_TEMPLATE_HDR_ULP0 +
2622 (ulp_num * MEM_DESCR_OFFSET));
2623 phba->mem_req[mem_descr_index] =
2624 BEISCSI_GET_CID_COUNT(phba, ulp_num) *
2625 BEISCSI_TEMPLATE_HDR_PER_CXN_SIZE;
2626
2627 mem_descr_index = (HWI_MEM_ASYNC_HEADER_BUF_ULP0 +
2628 (ulp_num * MEM_DESCR_OFFSET));
2629 phba->mem_req[mem_descr_index] =
2630 num_async_pdu_buf_pages *
2631 PAGE_SIZE;
2632
2633 mem_descr_index = (HWI_MEM_ASYNC_DATA_BUF_ULP0 +
2634 (ulp_num * MEM_DESCR_OFFSET));
2635 phba->mem_req[mem_descr_index] =
2636 num_async_pdu_data_pages *
2637 PAGE_SIZE;
2638
2639 mem_descr_index = (HWI_MEM_ASYNC_HEADER_RING_ULP0 +
2640 (ulp_num * MEM_DESCR_OFFSET));
2641 phba->mem_req[mem_descr_index] =
2642 num_async_pdu_buf_sgl_pages *
2643 PAGE_SIZE;
2644
2645 mem_descr_index = (HWI_MEM_ASYNC_DATA_RING_ULP0 +
2646 (ulp_num * MEM_DESCR_OFFSET));
2647 phba->mem_req[mem_descr_index] =
2648 num_async_pdu_data_sgl_pages *
2649 PAGE_SIZE;
2650
2651 mem_descr_index = (HWI_MEM_ASYNC_HEADER_HANDLE_ULP0 +
2652 (ulp_num * MEM_DESCR_OFFSET));
2653 phba->mem_req[mem_descr_index] =
2654 BEISCSI_GET_CID_COUNT(phba, ulp_num) *
2655 sizeof(struct async_pdu_handle);
2656
2657 mem_descr_index = (HWI_MEM_ASYNC_DATA_HANDLE_ULP0 +
2658 (ulp_num * MEM_DESCR_OFFSET));
2659 phba->mem_req[mem_descr_index] =
2660 BEISCSI_GET_CID_COUNT(phba, ulp_num) *
2661 sizeof(struct async_pdu_handle);
2662
2663 mem_descr_index = (HWI_MEM_ASYNC_PDU_CONTEXT_ULP0 +
2664 (ulp_num * MEM_DESCR_OFFSET));
2665 phba->mem_req[mem_descr_index] =
2666 sizeof(struct hwi_async_pdu_context) +
2667 (BEISCSI_GET_CID_COUNT(phba, ulp_num) *
2668 sizeof(struct hwi_async_entry));
2669 }
2670 }
2671 }
2672
beiscsi_alloc_mem(struct beiscsi_hba * phba)2673 static int beiscsi_alloc_mem(struct beiscsi_hba *phba)
2674 {
2675 dma_addr_t bus_add;
2676 struct hwi_controller *phwi_ctrlr;
2677 struct be_mem_descriptor *mem_descr;
2678 struct mem_array *mem_arr, *mem_arr_orig;
2679 unsigned int i, j, alloc_size, curr_alloc_size;
2680
2681 phba->phwi_ctrlr = kzalloc(phba->params.hwi_ws_sz, GFP_KERNEL);
2682 if (!phba->phwi_ctrlr)
2683 return -ENOMEM;
2684
2685 /* Allocate memory for wrb_context */
2686 phwi_ctrlr = phba->phwi_ctrlr;
2687 phwi_ctrlr->wrb_context = kzalloc(sizeof(struct hwi_wrb_context) *
2688 phba->params.cxns_per_ctrl,
2689 GFP_KERNEL);
2690 if (!phwi_ctrlr->wrb_context)
2691 return -ENOMEM;
2692
2693 phba->init_mem = kcalloc(SE_MEM_MAX, sizeof(*mem_descr),
2694 GFP_KERNEL);
2695 if (!phba->init_mem) {
2696 kfree(phwi_ctrlr->wrb_context);
2697 kfree(phba->phwi_ctrlr);
2698 return -ENOMEM;
2699 }
2700
2701 mem_arr_orig = kmalloc(sizeof(*mem_arr_orig) * BEISCSI_MAX_FRAGS_INIT,
2702 GFP_KERNEL);
2703 if (!mem_arr_orig) {
2704 kfree(phba->init_mem);
2705 kfree(phwi_ctrlr->wrb_context);
2706 kfree(phba->phwi_ctrlr);
2707 return -ENOMEM;
2708 }
2709
2710 mem_descr = phba->init_mem;
2711 for (i = 0; i < SE_MEM_MAX; i++) {
2712 if (!phba->mem_req[i]) {
2713 mem_descr->mem_array = NULL;
2714 mem_descr++;
2715 continue;
2716 }
2717
2718 j = 0;
2719 mem_arr = mem_arr_orig;
2720 alloc_size = phba->mem_req[i];
2721 memset(mem_arr, 0, sizeof(struct mem_array) *
2722 BEISCSI_MAX_FRAGS_INIT);
2723 curr_alloc_size = min(be_max_phys_size * 1024, alloc_size);
2724 do {
2725 mem_arr->virtual_address = pci_alloc_consistent(
2726 phba->pcidev,
2727 curr_alloc_size,
2728 &bus_add);
2729 if (!mem_arr->virtual_address) {
2730 if (curr_alloc_size <= BE_MIN_MEM_SIZE)
2731 goto free_mem;
2732 if (curr_alloc_size -
2733 rounddown_pow_of_two(curr_alloc_size))
2734 curr_alloc_size = rounddown_pow_of_two
2735 (curr_alloc_size);
2736 else
2737 curr_alloc_size = curr_alloc_size / 2;
2738 } else {
2739 mem_arr->bus_address.u.
2740 a64.address = (__u64) bus_add;
2741 mem_arr->size = curr_alloc_size;
2742 alloc_size -= curr_alloc_size;
2743 curr_alloc_size = min(be_max_phys_size *
2744 1024, alloc_size);
2745 j++;
2746 mem_arr++;
2747 }
2748 } while (alloc_size);
2749 mem_descr->num_elements = j;
2750 mem_descr->size_in_bytes = phba->mem_req[i];
2751 mem_descr->mem_array = kmalloc(sizeof(*mem_arr) * j,
2752 GFP_KERNEL);
2753 if (!mem_descr->mem_array)
2754 goto free_mem;
2755
2756 memcpy(mem_descr->mem_array, mem_arr_orig,
2757 sizeof(struct mem_array) * j);
2758 mem_descr++;
2759 }
2760 kfree(mem_arr_orig);
2761 return 0;
2762 free_mem:
2763 mem_descr->num_elements = j;
2764 while ((i) || (j)) {
2765 for (j = mem_descr->num_elements; j > 0; j--) {
2766 pci_free_consistent(phba->pcidev,
2767 mem_descr->mem_array[j - 1].size,
2768 mem_descr->mem_array[j - 1].
2769 virtual_address,
2770 (unsigned long)mem_descr->
2771 mem_array[j - 1].
2772 bus_address.u.a64.address);
2773 }
2774 if (i) {
2775 i--;
2776 kfree(mem_descr->mem_array);
2777 mem_descr--;
2778 }
2779 }
2780 kfree(mem_arr_orig);
2781 kfree(phba->init_mem);
2782 kfree(phba->phwi_ctrlr->wrb_context);
2783 kfree(phba->phwi_ctrlr);
2784 return -ENOMEM;
2785 }
2786
beiscsi_get_memory(struct beiscsi_hba * phba)2787 static int beiscsi_get_memory(struct beiscsi_hba *phba)
2788 {
2789 beiscsi_find_mem_req(phba);
2790 return beiscsi_alloc_mem(phba);
2791 }
2792
iscsi_init_global_templates(struct beiscsi_hba * phba)2793 static void iscsi_init_global_templates(struct beiscsi_hba *phba)
2794 {
2795 struct pdu_data_out *pdata_out;
2796 struct pdu_nop_out *pnop_out;
2797 struct be_mem_descriptor *mem_descr;
2798
2799 mem_descr = phba->init_mem;
2800 mem_descr += ISCSI_MEM_GLOBAL_HEADER;
2801 pdata_out =
2802 (struct pdu_data_out *)mem_descr->mem_array[0].virtual_address;
2803 memset(pdata_out, 0, BE_ISCSI_PDU_HEADER_SIZE);
2804
2805 AMAP_SET_BITS(struct amap_pdu_data_out, opcode, pdata_out,
2806 IIOC_SCSI_DATA);
2807
2808 pnop_out =
2809 (struct pdu_nop_out *)((unsigned char *)mem_descr->mem_array[0].
2810 virtual_address + BE_ISCSI_PDU_HEADER_SIZE);
2811
2812 memset(pnop_out, 0, BE_ISCSI_PDU_HEADER_SIZE);
2813 AMAP_SET_BITS(struct amap_pdu_nop_out, ttt, pnop_out, 0xFFFFFFFF);
2814 AMAP_SET_BITS(struct amap_pdu_nop_out, f_bit, pnop_out, 1);
2815 AMAP_SET_BITS(struct amap_pdu_nop_out, i_bit, pnop_out, 0);
2816 }
2817
beiscsi_init_wrb_handle(struct beiscsi_hba * phba)2818 static int beiscsi_init_wrb_handle(struct beiscsi_hba *phba)
2819 {
2820 struct be_mem_descriptor *mem_descr_wrbh, *mem_descr_wrb;
2821 struct hwi_context_memory *phwi_ctxt;
2822 struct wrb_handle *pwrb_handle = NULL;
2823 struct hwi_controller *phwi_ctrlr;
2824 struct hwi_wrb_context *pwrb_context;
2825 struct iscsi_wrb *pwrb = NULL;
2826 unsigned int num_cxn_wrbh = 0;
2827 unsigned int num_cxn_wrb = 0, j, idx = 0, index;
2828
2829 mem_descr_wrbh = phba->init_mem;
2830 mem_descr_wrbh += HWI_MEM_WRBH;
2831
2832 mem_descr_wrb = phba->init_mem;
2833 mem_descr_wrb += HWI_MEM_WRB;
2834 phwi_ctrlr = phba->phwi_ctrlr;
2835
2836 /* Allocate memory for WRBQ */
2837 phwi_ctxt = phwi_ctrlr->phwi_ctxt;
2838 phwi_ctxt->be_wrbq = kzalloc(sizeof(struct be_queue_info) *
2839 phba->params.cxns_per_ctrl,
2840 GFP_KERNEL);
2841 if (!phwi_ctxt->be_wrbq) {
2842 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
2843 "BM_%d : WRBQ Mem Alloc Failed\n");
2844 return -ENOMEM;
2845 }
2846
2847 for (index = 0; index < phba->params.cxns_per_ctrl; index++) {
2848 pwrb_context = &phwi_ctrlr->wrb_context[index];
2849 pwrb_context->pwrb_handle_base =
2850 kzalloc(sizeof(struct wrb_handle *) *
2851 phba->params.wrbs_per_cxn, GFP_KERNEL);
2852 if (!pwrb_context->pwrb_handle_base) {
2853 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
2854 "BM_%d : Mem Alloc Failed. Failing to load\n");
2855 goto init_wrb_hndl_failed;
2856 }
2857 pwrb_context->pwrb_handle_basestd =
2858 kzalloc(sizeof(struct wrb_handle *) *
2859 phba->params.wrbs_per_cxn, GFP_KERNEL);
2860 if (!pwrb_context->pwrb_handle_basestd) {
2861 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
2862 "BM_%d : Mem Alloc Failed. Failing to load\n");
2863 goto init_wrb_hndl_failed;
2864 }
2865 if (!num_cxn_wrbh) {
2866 pwrb_handle =
2867 mem_descr_wrbh->mem_array[idx].virtual_address;
2868 num_cxn_wrbh = ((mem_descr_wrbh->mem_array[idx].size) /
2869 ((sizeof(struct wrb_handle)) *
2870 phba->params.wrbs_per_cxn));
2871 idx++;
2872 }
2873 pwrb_context->alloc_index = 0;
2874 pwrb_context->wrb_handles_available = 0;
2875 pwrb_context->free_index = 0;
2876
2877 if (num_cxn_wrbh) {
2878 for (j = 0; j < phba->params.wrbs_per_cxn; j++) {
2879 pwrb_context->pwrb_handle_base[j] = pwrb_handle;
2880 pwrb_context->pwrb_handle_basestd[j] =
2881 pwrb_handle;
2882 pwrb_context->wrb_handles_available++;
2883 pwrb_handle->wrb_index = j;
2884 pwrb_handle++;
2885 }
2886 num_cxn_wrbh--;
2887 }
2888 }
2889 idx = 0;
2890 for (index = 0; index < phba->params.cxns_per_ctrl; index++) {
2891 pwrb_context = &phwi_ctrlr->wrb_context[index];
2892 if (!num_cxn_wrb) {
2893 pwrb = mem_descr_wrb->mem_array[idx].virtual_address;
2894 num_cxn_wrb = (mem_descr_wrb->mem_array[idx].size) /
2895 ((sizeof(struct iscsi_wrb) *
2896 phba->params.wrbs_per_cxn));
2897 idx++;
2898 }
2899
2900 if (num_cxn_wrb) {
2901 for (j = 0; j < phba->params.wrbs_per_cxn; j++) {
2902 pwrb_handle = pwrb_context->pwrb_handle_base[j];
2903 pwrb_handle->pwrb = pwrb;
2904 pwrb++;
2905 }
2906 num_cxn_wrb--;
2907 }
2908 }
2909 return 0;
2910 init_wrb_hndl_failed:
2911 for (j = index; j > 0; j--) {
2912 pwrb_context = &phwi_ctrlr->wrb_context[j];
2913 kfree(pwrb_context->pwrb_handle_base);
2914 kfree(pwrb_context->pwrb_handle_basestd);
2915 }
2916 return -ENOMEM;
2917 }
2918
hwi_init_async_pdu_ctx(struct beiscsi_hba * phba)2919 static int hwi_init_async_pdu_ctx(struct beiscsi_hba *phba)
2920 {
2921 uint8_t ulp_num;
2922 struct hwi_controller *phwi_ctrlr;
2923 struct hba_parameters *p = &phba->params;
2924 struct hwi_async_pdu_context *pasync_ctx;
2925 struct async_pdu_handle *pasync_header_h, *pasync_data_h;
2926 unsigned int index, idx, num_per_mem, num_async_data;
2927 struct be_mem_descriptor *mem_descr;
2928
2929 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
2930 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
2931
2932 mem_descr = (struct be_mem_descriptor *)phba->init_mem;
2933 mem_descr += (HWI_MEM_ASYNC_PDU_CONTEXT_ULP0 +
2934 (ulp_num * MEM_DESCR_OFFSET));
2935
2936 phwi_ctrlr = phba->phwi_ctrlr;
2937 phwi_ctrlr->phwi_ctxt->pasync_ctx[ulp_num] =
2938 (struct hwi_async_pdu_context *)
2939 mem_descr->mem_array[0].virtual_address;
2940
2941 pasync_ctx = phwi_ctrlr->phwi_ctxt->pasync_ctx[ulp_num];
2942 memset(pasync_ctx, 0, sizeof(*pasync_ctx));
2943
2944 pasync_ctx->async_entry =
2945 (struct hwi_async_entry *)
2946 ((long unsigned int)pasync_ctx +
2947 sizeof(struct hwi_async_pdu_context));
2948
2949 pasync_ctx->num_entries = BEISCSI_GET_CID_COUNT(phba,
2950 ulp_num);
2951 pasync_ctx->buffer_size = p->defpdu_hdr_sz;
2952
2953 mem_descr = (struct be_mem_descriptor *)phba->init_mem;
2954 mem_descr += HWI_MEM_ASYNC_HEADER_BUF_ULP0 +
2955 (ulp_num * MEM_DESCR_OFFSET);
2956 if (mem_descr->mem_array[0].virtual_address) {
2957 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
2958 "BM_%d : hwi_init_async_pdu_ctx"
2959 " HWI_MEM_ASYNC_HEADER_BUF_ULP%d va=%p\n",
2960 ulp_num,
2961 mem_descr->mem_array[0].
2962 virtual_address);
2963 } else
2964 beiscsi_log(phba, KERN_WARNING,
2965 BEISCSI_LOG_INIT,
2966 "BM_%d : No Virtual address for ULP : %d\n",
2967 ulp_num);
2968
2969 pasync_ctx->async_header.va_base =
2970 mem_descr->mem_array[0].virtual_address;
2971
2972 pasync_ctx->async_header.pa_base.u.a64.address =
2973 mem_descr->mem_array[0].
2974 bus_address.u.a64.address;
2975
2976 mem_descr = (struct be_mem_descriptor *)phba->init_mem;
2977 mem_descr += HWI_MEM_ASYNC_HEADER_RING_ULP0 +
2978 (ulp_num * MEM_DESCR_OFFSET);
2979 if (mem_descr->mem_array[0].virtual_address) {
2980 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
2981 "BM_%d : hwi_init_async_pdu_ctx"
2982 " HWI_MEM_ASYNC_HEADER_RING_ULP%d va=%p\n",
2983 ulp_num,
2984 mem_descr->mem_array[0].
2985 virtual_address);
2986 } else
2987 beiscsi_log(phba, KERN_WARNING,
2988 BEISCSI_LOG_INIT,
2989 "BM_%d : No Virtual address for ULP : %d\n",
2990 ulp_num);
2991
2992 pasync_ctx->async_header.ring_base =
2993 mem_descr->mem_array[0].virtual_address;
2994
2995 mem_descr = (struct be_mem_descriptor *)phba->init_mem;
2996 mem_descr += HWI_MEM_ASYNC_HEADER_HANDLE_ULP0 +
2997 (ulp_num * MEM_DESCR_OFFSET);
2998 if (mem_descr->mem_array[0].virtual_address) {
2999 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3000 "BM_%d : hwi_init_async_pdu_ctx"
3001 " HWI_MEM_ASYNC_HEADER_HANDLE_ULP%d va=%p\n",
3002 ulp_num,
3003 mem_descr->mem_array[0].
3004 virtual_address);
3005 } else
3006 beiscsi_log(phba, KERN_WARNING,
3007 BEISCSI_LOG_INIT,
3008 "BM_%d : No Virtual address for ULP : %d\n",
3009 ulp_num);
3010
3011 pasync_ctx->async_header.handle_base =
3012 mem_descr->mem_array[0].virtual_address;
3013 pasync_ctx->async_header.writables = 0;
3014 INIT_LIST_HEAD(&pasync_ctx->async_header.free_list);
3015
3016 mem_descr = (struct be_mem_descriptor *)phba->init_mem;
3017 mem_descr += HWI_MEM_ASYNC_DATA_RING_ULP0 +
3018 (ulp_num * MEM_DESCR_OFFSET);
3019 if (mem_descr->mem_array[0].virtual_address) {
3020 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3021 "BM_%d : hwi_init_async_pdu_ctx"
3022 " HWI_MEM_ASYNC_DATA_RING_ULP%d va=%p\n",
3023 ulp_num,
3024 mem_descr->mem_array[0].
3025 virtual_address);
3026 } else
3027 beiscsi_log(phba, KERN_WARNING,
3028 BEISCSI_LOG_INIT,
3029 "BM_%d : No Virtual address for ULP : %d\n",
3030 ulp_num);
3031
3032 pasync_ctx->async_data.ring_base =
3033 mem_descr->mem_array[0].virtual_address;
3034
3035 mem_descr = (struct be_mem_descriptor *)phba->init_mem;
3036 mem_descr += HWI_MEM_ASYNC_DATA_HANDLE_ULP0 +
3037 (ulp_num * MEM_DESCR_OFFSET);
3038 if (!mem_descr->mem_array[0].virtual_address)
3039 beiscsi_log(phba, KERN_WARNING,
3040 BEISCSI_LOG_INIT,
3041 "BM_%d : No Virtual address for ULP : %d\n",
3042 ulp_num);
3043
3044 pasync_ctx->async_data.handle_base =
3045 mem_descr->mem_array[0].virtual_address;
3046 pasync_ctx->async_data.writables = 0;
3047 INIT_LIST_HEAD(&pasync_ctx->async_data.free_list);
3048
3049 pasync_header_h =
3050 (struct async_pdu_handle *)
3051 pasync_ctx->async_header.handle_base;
3052 pasync_data_h =
3053 (struct async_pdu_handle *)
3054 pasync_ctx->async_data.handle_base;
3055
3056 mem_descr = (struct be_mem_descriptor *)phba->init_mem;
3057 mem_descr += HWI_MEM_ASYNC_DATA_BUF_ULP0 +
3058 (ulp_num * MEM_DESCR_OFFSET);
3059 if (mem_descr->mem_array[0].virtual_address) {
3060 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3061 "BM_%d : hwi_init_async_pdu_ctx"
3062 " HWI_MEM_ASYNC_DATA_BUF_ULP%d va=%p\n",
3063 ulp_num,
3064 mem_descr->mem_array[0].
3065 virtual_address);
3066 } else
3067 beiscsi_log(phba, KERN_WARNING,
3068 BEISCSI_LOG_INIT,
3069 "BM_%d : No Virtual address for ULP : %d\n",
3070 ulp_num);
3071
3072 idx = 0;
3073 pasync_ctx->async_data.va_base =
3074 mem_descr->mem_array[idx].virtual_address;
3075 pasync_ctx->async_data.pa_base.u.a64.address =
3076 mem_descr->mem_array[idx].
3077 bus_address.u.a64.address;
3078
3079 num_async_data = ((mem_descr->mem_array[idx].size) /
3080 phba->params.defpdu_data_sz);
3081 num_per_mem = 0;
3082
3083 for (index = 0; index < BEISCSI_GET_CID_COUNT
3084 (phba, ulp_num); index++) {
3085 pasync_header_h->cri = -1;
3086 pasync_header_h->index = (char)index;
3087 INIT_LIST_HEAD(&pasync_header_h->link);
3088 pasync_header_h->pbuffer =
3089 (void *)((unsigned long)
3090 (pasync_ctx->
3091 async_header.va_base) +
3092 (p->defpdu_hdr_sz * index));
3093
3094 pasync_header_h->pa.u.a64.address =
3095 pasync_ctx->async_header.pa_base.u.a64.
3096 address + (p->defpdu_hdr_sz * index);
3097
3098 list_add_tail(&pasync_header_h->link,
3099 &pasync_ctx->async_header.
3100 free_list);
3101 pasync_header_h++;
3102 pasync_ctx->async_header.free_entries++;
3103 pasync_ctx->async_header.writables++;
3104
3105 INIT_LIST_HEAD(&pasync_ctx->async_entry[index].
3106 wait_queue.list);
3107 INIT_LIST_HEAD(&pasync_ctx->async_entry[index].
3108 header_busy_list);
3109 pasync_data_h->cri = -1;
3110 pasync_data_h->index = (char)index;
3111 INIT_LIST_HEAD(&pasync_data_h->link);
3112
3113 if (!num_async_data) {
3114 num_per_mem = 0;
3115 idx++;
3116 pasync_ctx->async_data.va_base =
3117 mem_descr->mem_array[idx].
3118 virtual_address;
3119 pasync_ctx->async_data.pa_base.u.
3120 a64.address =
3121 mem_descr->mem_array[idx].
3122 bus_address.u.a64.address;
3123 num_async_data =
3124 ((mem_descr->mem_array[idx].
3125 size) /
3126 phba->params.defpdu_data_sz);
3127 }
3128 pasync_data_h->pbuffer =
3129 (void *)((unsigned long)
3130 (pasync_ctx->async_data.va_base) +
3131 (p->defpdu_data_sz * num_per_mem));
3132
3133 pasync_data_h->pa.u.a64.address =
3134 pasync_ctx->async_data.pa_base.u.a64.
3135 address + (p->defpdu_data_sz *
3136 num_per_mem);
3137 num_per_mem++;
3138 num_async_data--;
3139
3140 list_add_tail(&pasync_data_h->link,
3141 &pasync_ctx->async_data.
3142 free_list);
3143 pasync_data_h++;
3144 pasync_ctx->async_data.free_entries++;
3145 pasync_ctx->async_data.writables++;
3146
3147 INIT_LIST_HEAD(&pasync_ctx->async_entry[index].
3148 data_busy_list);
3149 }
3150
3151 pasync_ctx->async_header.host_write_ptr = 0;
3152 pasync_ctx->async_header.ep_read_ptr = -1;
3153 pasync_ctx->async_data.host_write_ptr = 0;
3154 pasync_ctx->async_data.ep_read_ptr = -1;
3155 }
3156 }
3157
3158 return 0;
3159 }
3160
3161 static int
be_sgl_create_contiguous(void * virtual_address,u64 physical_address,u32 length,struct be_dma_mem * sgl)3162 be_sgl_create_contiguous(void *virtual_address,
3163 u64 physical_address, u32 length,
3164 struct be_dma_mem *sgl)
3165 {
3166 WARN_ON(!virtual_address);
3167 WARN_ON(!physical_address);
3168 WARN_ON(!length > 0);
3169 WARN_ON(!sgl);
3170
3171 sgl->va = virtual_address;
3172 sgl->dma = (unsigned long)physical_address;
3173 sgl->size = length;
3174
3175 return 0;
3176 }
3177
be_sgl_destroy_contiguous(struct be_dma_mem * sgl)3178 static void be_sgl_destroy_contiguous(struct be_dma_mem *sgl)
3179 {
3180 memset(sgl, 0, sizeof(*sgl));
3181 }
3182
3183 static void
hwi_build_be_sgl_arr(struct beiscsi_hba * phba,struct mem_array * pmem,struct be_dma_mem * sgl)3184 hwi_build_be_sgl_arr(struct beiscsi_hba *phba,
3185 struct mem_array *pmem, struct be_dma_mem *sgl)
3186 {
3187 if (sgl->va)
3188 be_sgl_destroy_contiguous(sgl);
3189
3190 be_sgl_create_contiguous(pmem->virtual_address,
3191 pmem->bus_address.u.a64.address,
3192 pmem->size, sgl);
3193 }
3194
3195 static void
hwi_build_be_sgl_by_offset(struct beiscsi_hba * phba,struct mem_array * pmem,struct be_dma_mem * sgl)3196 hwi_build_be_sgl_by_offset(struct beiscsi_hba *phba,
3197 struct mem_array *pmem, struct be_dma_mem *sgl)
3198 {
3199 if (sgl->va)
3200 be_sgl_destroy_contiguous(sgl);
3201
3202 be_sgl_create_contiguous((unsigned char *)pmem->virtual_address,
3203 pmem->bus_address.u.a64.address,
3204 pmem->size, sgl);
3205 }
3206
be_fill_queue(struct be_queue_info * q,u16 len,u16 entry_size,void * vaddress)3207 static int be_fill_queue(struct be_queue_info *q,
3208 u16 len, u16 entry_size, void *vaddress)
3209 {
3210 struct be_dma_mem *mem = &q->dma_mem;
3211
3212 memset(q, 0, sizeof(*q));
3213 q->len = len;
3214 q->entry_size = entry_size;
3215 mem->size = len * entry_size;
3216 mem->va = vaddress;
3217 if (!mem->va)
3218 return -ENOMEM;
3219 memset(mem->va, 0, mem->size);
3220 return 0;
3221 }
3222
beiscsi_create_eqs(struct beiscsi_hba * phba,struct hwi_context_memory * phwi_context)3223 static int beiscsi_create_eqs(struct beiscsi_hba *phba,
3224 struct hwi_context_memory *phwi_context)
3225 {
3226 unsigned int i, num_eq_pages;
3227 int ret = 0, eq_for_mcc;
3228 struct be_queue_info *eq;
3229 struct be_dma_mem *mem;
3230 void *eq_vaddress;
3231 dma_addr_t paddr;
3232
3233 num_eq_pages = PAGES_REQUIRED(phba->params.num_eq_entries * \
3234 sizeof(struct be_eq_entry));
3235
3236 if (phba->msix_enabled)
3237 eq_for_mcc = 1;
3238 else
3239 eq_for_mcc = 0;
3240 for (i = 0; i < (phba->num_cpus + eq_for_mcc); i++) {
3241 eq = &phwi_context->be_eq[i].q;
3242 mem = &eq->dma_mem;
3243 phwi_context->be_eq[i].phba = phba;
3244 eq_vaddress = pci_alloc_consistent(phba->pcidev,
3245 num_eq_pages * PAGE_SIZE,
3246 &paddr);
3247 if (!eq_vaddress)
3248 goto create_eq_error;
3249
3250 mem->va = eq_vaddress;
3251 ret = be_fill_queue(eq, phba->params.num_eq_entries,
3252 sizeof(struct be_eq_entry), eq_vaddress);
3253 if (ret) {
3254 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3255 "BM_%d : be_fill_queue Failed for EQ\n");
3256 goto create_eq_error;
3257 }
3258
3259 mem->dma = paddr;
3260 ret = beiscsi_cmd_eq_create(&phba->ctrl, eq,
3261 phwi_context->cur_eqd);
3262 if (ret) {
3263 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3264 "BM_%d : beiscsi_cmd_eq_create"
3265 "Failed for EQ\n");
3266 goto create_eq_error;
3267 }
3268
3269 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3270 "BM_%d : eqid = %d\n",
3271 phwi_context->be_eq[i].q.id);
3272 }
3273 return 0;
3274 create_eq_error:
3275 for (i = 0; i < (phba->num_cpus + eq_for_mcc); i++) {
3276 eq = &phwi_context->be_eq[i].q;
3277 mem = &eq->dma_mem;
3278 if (mem->va)
3279 pci_free_consistent(phba->pcidev, num_eq_pages
3280 * PAGE_SIZE,
3281 mem->va, mem->dma);
3282 }
3283 return ret;
3284 }
3285
beiscsi_create_cqs(struct beiscsi_hba * phba,struct hwi_context_memory * phwi_context)3286 static int beiscsi_create_cqs(struct beiscsi_hba *phba,
3287 struct hwi_context_memory *phwi_context)
3288 {
3289 unsigned int i, num_cq_pages;
3290 int ret = 0;
3291 struct be_queue_info *cq, *eq;
3292 struct be_dma_mem *mem;
3293 struct be_eq_obj *pbe_eq;
3294 void *cq_vaddress;
3295 dma_addr_t paddr;
3296
3297 num_cq_pages = PAGES_REQUIRED(phba->params.num_cq_entries * \
3298 sizeof(struct sol_cqe));
3299
3300 for (i = 0; i < phba->num_cpus; i++) {
3301 cq = &phwi_context->be_cq[i];
3302 eq = &phwi_context->be_eq[i].q;
3303 pbe_eq = &phwi_context->be_eq[i];
3304 pbe_eq->cq = cq;
3305 pbe_eq->phba = phba;
3306 mem = &cq->dma_mem;
3307 cq_vaddress = pci_alloc_consistent(phba->pcidev,
3308 num_cq_pages * PAGE_SIZE,
3309 &paddr);
3310 if (!cq_vaddress)
3311 goto create_cq_error;
3312 ret = be_fill_queue(cq, phba->params.num_cq_entries,
3313 sizeof(struct sol_cqe), cq_vaddress);
3314 if (ret) {
3315 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3316 "BM_%d : be_fill_queue Failed "
3317 "for ISCSI CQ\n");
3318 goto create_cq_error;
3319 }
3320
3321 mem->dma = paddr;
3322 ret = beiscsi_cmd_cq_create(&phba->ctrl, cq, eq, false,
3323 false, 0);
3324 if (ret) {
3325 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3326 "BM_%d : beiscsi_cmd_eq_create"
3327 "Failed for ISCSI CQ\n");
3328 goto create_cq_error;
3329 }
3330 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3331 "BM_%d : iscsi cq_id is %d for eq_id %d\n"
3332 "iSCSI CQ CREATED\n", cq->id, eq->id);
3333 }
3334 return 0;
3335
3336 create_cq_error:
3337 for (i = 0; i < phba->num_cpus; i++) {
3338 cq = &phwi_context->be_cq[i];
3339 mem = &cq->dma_mem;
3340 if (mem->va)
3341 pci_free_consistent(phba->pcidev, num_cq_pages
3342 * PAGE_SIZE,
3343 mem->va, mem->dma);
3344 }
3345 return ret;
3346
3347 }
3348
3349 static int
beiscsi_create_def_hdr(struct beiscsi_hba * phba,struct hwi_context_memory * phwi_context,struct hwi_controller * phwi_ctrlr,unsigned int def_pdu_ring_sz,uint8_t ulp_num)3350 beiscsi_create_def_hdr(struct beiscsi_hba *phba,
3351 struct hwi_context_memory *phwi_context,
3352 struct hwi_controller *phwi_ctrlr,
3353 unsigned int def_pdu_ring_sz, uint8_t ulp_num)
3354 {
3355 unsigned int idx;
3356 int ret;
3357 struct be_queue_info *dq, *cq;
3358 struct be_dma_mem *mem;
3359 struct be_mem_descriptor *mem_descr;
3360 void *dq_vaddress;
3361
3362 idx = 0;
3363 dq = &phwi_context->be_def_hdrq[ulp_num];
3364 cq = &phwi_context->be_cq[0];
3365 mem = &dq->dma_mem;
3366 mem_descr = phba->init_mem;
3367 mem_descr += HWI_MEM_ASYNC_HEADER_RING_ULP0 +
3368 (ulp_num * MEM_DESCR_OFFSET);
3369 dq_vaddress = mem_descr->mem_array[idx].virtual_address;
3370 ret = be_fill_queue(dq, mem_descr->mem_array[0].size /
3371 sizeof(struct phys_addr),
3372 sizeof(struct phys_addr), dq_vaddress);
3373 if (ret) {
3374 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3375 "BM_%d : be_fill_queue Failed for DEF PDU HDR on ULP : %d\n",
3376 ulp_num);
3377
3378 return ret;
3379 }
3380 mem->dma = (unsigned long)mem_descr->mem_array[idx].
3381 bus_address.u.a64.address;
3382 ret = be_cmd_create_default_pdu_queue(&phba->ctrl, cq, dq,
3383 def_pdu_ring_sz,
3384 phba->params.defpdu_hdr_sz,
3385 BEISCSI_DEFQ_HDR, ulp_num);
3386 if (ret) {
3387 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3388 "BM_%d : be_cmd_create_default_pdu_queue Failed DEFHDR on ULP : %d\n",
3389 ulp_num);
3390
3391 return ret;
3392 }
3393
3394 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3395 "BM_%d : iscsi hdr def pdu id for ULP : %d is %d\n",
3396 ulp_num,
3397 phwi_context->be_def_hdrq[ulp_num].id);
3398 hwi_post_async_buffers(phba, BEISCSI_DEFQ_HDR, ulp_num);
3399 return 0;
3400 }
3401
3402 static int
beiscsi_create_def_data(struct beiscsi_hba * phba,struct hwi_context_memory * phwi_context,struct hwi_controller * phwi_ctrlr,unsigned int def_pdu_ring_sz,uint8_t ulp_num)3403 beiscsi_create_def_data(struct beiscsi_hba *phba,
3404 struct hwi_context_memory *phwi_context,
3405 struct hwi_controller *phwi_ctrlr,
3406 unsigned int def_pdu_ring_sz, uint8_t ulp_num)
3407 {
3408 unsigned int idx;
3409 int ret;
3410 struct be_queue_info *dataq, *cq;
3411 struct be_dma_mem *mem;
3412 struct be_mem_descriptor *mem_descr;
3413 void *dq_vaddress;
3414
3415 idx = 0;
3416 dataq = &phwi_context->be_def_dataq[ulp_num];
3417 cq = &phwi_context->be_cq[0];
3418 mem = &dataq->dma_mem;
3419 mem_descr = phba->init_mem;
3420 mem_descr += HWI_MEM_ASYNC_DATA_RING_ULP0 +
3421 (ulp_num * MEM_DESCR_OFFSET);
3422 dq_vaddress = mem_descr->mem_array[idx].virtual_address;
3423 ret = be_fill_queue(dataq, mem_descr->mem_array[0].size /
3424 sizeof(struct phys_addr),
3425 sizeof(struct phys_addr), dq_vaddress);
3426 if (ret) {
3427 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3428 "BM_%d : be_fill_queue Failed for DEF PDU "
3429 "DATA on ULP : %d\n",
3430 ulp_num);
3431
3432 return ret;
3433 }
3434 mem->dma = (unsigned long)mem_descr->mem_array[idx].
3435 bus_address.u.a64.address;
3436 ret = be_cmd_create_default_pdu_queue(&phba->ctrl, cq, dataq,
3437 def_pdu_ring_sz,
3438 phba->params.defpdu_data_sz,
3439 BEISCSI_DEFQ_DATA, ulp_num);
3440 if (ret) {
3441 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3442 "BM_%d be_cmd_create_default_pdu_queue"
3443 " Failed for DEF PDU DATA on ULP : %d\n",
3444 ulp_num);
3445 return ret;
3446 }
3447
3448 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3449 "BM_%d : iscsi def data id on ULP : %d is %d\n",
3450 ulp_num,
3451 phwi_context->be_def_dataq[ulp_num].id);
3452
3453 hwi_post_async_buffers(phba, BEISCSI_DEFQ_DATA, ulp_num);
3454 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3455 "BM_%d : DEFAULT PDU DATA RING CREATED"
3456 "on ULP : %d\n", ulp_num);
3457
3458 return 0;
3459 }
3460
3461
3462 static int
beiscsi_post_template_hdr(struct beiscsi_hba * phba)3463 beiscsi_post_template_hdr(struct beiscsi_hba *phba)
3464 {
3465 struct be_mem_descriptor *mem_descr;
3466 struct mem_array *pm_arr;
3467 struct be_dma_mem sgl;
3468 int status, ulp_num;
3469
3470 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
3471 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
3472 mem_descr = (struct be_mem_descriptor *)phba->init_mem;
3473 mem_descr += HWI_MEM_TEMPLATE_HDR_ULP0 +
3474 (ulp_num * MEM_DESCR_OFFSET);
3475 pm_arr = mem_descr->mem_array;
3476
3477 hwi_build_be_sgl_arr(phba, pm_arr, &sgl);
3478 status = be_cmd_iscsi_post_template_hdr(
3479 &phba->ctrl, &sgl);
3480
3481 if (status != 0) {
3482 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3483 "BM_%d : Post Template HDR Failed for"
3484 "ULP_%d\n", ulp_num);
3485 return status;
3486 }
3487
3488 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3489 "BM_%d : Template HDR Pages Posted for"
3490 "ULP_%d\n", ulp_num);
3491 }
3492 }
3493 return 0;
3494 }
3495
3496 static int
beiscsi_post_pages(struct beiscsi_hba * phba)3497 beiscsi_post_pages(struct beiscsi_hba *phba)
3498 {
3499 struct be_mem_descriptor *mem_descr;
3500 struct mem_array *pm_arr;
3501 unsigned int page_offset, i;
3502 struct be_dma_mem sgl;
3503 int status, ulp_num = 0;
3504
3505 mem_descr = phba->init_mem;
3506 mem_descr += HWI_MEM_SGE;
3507 pm_arr = mem_descr->mem_array;
3508
3509 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++)
3510 if (test_bit(ulp_num, &phba->fw_config.ulp_supported))
3511 break;
3512
3513 page_offset = (sizeof(struct iscsi_sge) * phba->params.num_sge_per_io *
3514 phba->fw_config.iscsi_icd_start[ulp_num]) / PAGE_SIZE;
3515 for (i = 0; i < mem_descr->num_elements; i++) {
3516 hwi_build_be_sgl_arr(phba, pm_arr, &sgl);
3517 status = be_cmd_iscsi_post_sgl_pages(&phba->ctrl, &sgl,
3518 page_offset,
3519 (pm_arr->size / PAGE_SIZE));
3520 page_offset += pm_arr->size / PAGE_SIZE;
3521 if (status != 0) {
3522 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3523 "BM_%d : post sgl failed.\n");
3524 return status;
3525 }
3526 pm_arr++;
3527 }
3528 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3529 "BM_%d : POSTED PAGES\n");
3530 return 0;
3531 }
3532
be_queue_free(struct beiscsi_hba * phba,struct be_queue_info * q)3533 static void be_queue_free(struct beiscsi_hba *phba, struct be_queue_info *q)
3534 {
3535 struct be_dma_mem *mem = &q->dma_mem;
3536 if (mem->va) {
3537 pci_free_consistent(phba->pcidev, mem->size,
3538 mem->va, mem->dma);
3539 mem->va = NULL;
3540 }
3541 }
3542
be_queue_alloc(struct beiscsi_hba * phba,struct be_queue_info * q,u16 len,u16 entry_size)3543 static int be_queue_alloc(struct beiscsi_hba *phba, struct be_queue_info *q,
3544 u16 len, u16 entry_size)
3545 {
3546 struct be_dma_mem *mem = &q->dma_mem;
3547
3548 memset(q, 0, sizeof(*q));
3549 q->len = len;
3550 q->entry_size = entry_size;
3551 mem->size = len * entry_size;
3552 mem->va = pci_zalloc_consistent(phba->pcidev, mem->size, &mem->dma);
3553 if (!mem->va)
3554 return -ENOMEM;
3555 return 0;
3556 }
3557
3558 static int
beiscsi_create_wrb_rings(struct beiscsi_hba * phba,struct hwi_context_memory * phwi_context,struct hwi_controller * phwi_ctrlr)3559 beiscsi_create_wrb_rings(struct beiscsi_hba *phba,
3560 struct hwi_context_memory *phwi_context,
3561 struct hwi_controller *phwi_ctrlr)
3562 {
3563 unsigned int wrb_mem_index, offset, size, num_wrb_rings;
3564 u64 pa_addr_lo;
3565 unsigned int idx, num, i, ulp_num;
3566 struct mem_array *pwrb_arr;
3567 void *wrb_vaddr;
3568 struct be_dma_mem sgl;
3569 struct be_mem_descriptor *mem_descr;
3570 struct hwi_wrb_context *pwrb_context;
3571 int status;
3572 uint8_t ulp_count = 0, ulp_base_num = 0;
3573 uint16_t cid_count_ulp[BEISCSI_ULP_COUNT] = { 0 };
3574
3575 idx = 0;
3576 mem_descr = phba->init_mem;
3577 mem_descr += HWI_MEM_WRB;
3578 pwrb_arr = kmalloc(sizeof(*pwrb_arr) * phba->params.cxns_per_ctrl,
3579 GFP_KERNEL);
3580 if (!pwrb_arr) {
3581 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3582 "BM_%d : Memory alloc failed in create wrb ring.\n");
3583 return -ENOMEM;
3584 }
3585 wrb_vaddr = mem_descr->mem_array[idx].virtual_address;
3586 pa_addr_lo = mem_descr->mem_array[idx].bus_address.u.a64.address;
3587 num_wrb_rings = mem_descr->mem_array[idx].size /
3588 (phba->params.wrbs_per_cxn * sizeof(struct iscsi_wrb));
3589
3590 for (num = 0; num < phba->params.cxns_per_ctrl; num++) {
3591 if (num_wrb_rings) {
3592 pwrb_arr[num].virtual_address = wrb_vaddr;
3593 pwrb_arr[num].bus_address.u.a64.address = pa_addr_lo;
3594 pwrb_arr[num].size = phba->params.wrbs_per_cxn *
3595 sizeof(struct iscsi_wrb);
3596 wrb_vaddr += pwrb_arr[num].size;
3597 pa_addr_lo += pwrb_arr[num].size;
3598 num_wrb_rings--;
3599 } else {
3600 idx++;
3601 wrb_vaddr = mem_descr->mem_array[idx].virtual_address;
3602 pa_addr_lo = mem_descr->mem_array[idx].\
3603 bus_address.u.a64.address;
3604 num_wrb_rings = mem_descr->mem_array[idx].size /
3605 (phba->params.wrbs_per_cxn *
3606 sizeof(struct iscsi_wrb));
3607 pwrb_arr[num].virtual_address = wrb_vaddr;
3608 pwrb_arr[num].bus_address.u.a64.address\
3609 = pa_addr_lo;
3610 pwrb_arr[num].size = phba->params.wrbs_per_cxn *
3611 sizeof(struct iscsi_wrb);
3612 wrb_vaddr += pwrb_arr[num].size;
3613 pa_addr_lo += pwrb_arr[num].size;
3614 num_wrb_rings--;
3615 }
3616 }
3617
3618 /* Get the ULP Count */
3619 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++)
3620 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
3621 ulp_count++;
3622 ulp_base_num = ulp_num;
3623 cid_count_ulp[ulp_num] =
3624 BEISCSI_GET_CID_COUNT(phba, ulp_num);
3625 }
3626
3627 for (i = 0; i < phba->params.cxns_per_ctrl; i++) {
3628 wrb_mem_index = 0;
3629 offset = 0;
3630 size = 0;
3631
3632 if (ulp_count > 1) {
3633 ulp_base_num = (ulp_base_num + 1) % BEISCSI_ULP_COUNT;
3634
3635 if (!cid_count_ulp[ulp_base_num])
3636 ulp_base_num = (ulp_base_num + 1) %
3637 BEISCSI_ULP_COUNT;
3638
3639 cid_count_ulp[ulp_base_num]--;
3640 }
3641
3642
3643 hwi_build_be_sgl_by_offset(phba, &pwrb_arr[i], &sgl);
3644 status = be_cmd_wrbq_create(&phba->ctrl, &sgl,
3645 &phwi_context->be_wrbq[i],
3646 &phwi_ctrlr->wrb_context[i],
3647 ulp_base_num);
3648 if (status != 0) {
3649 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3650 "BM_%d : wrbq create failed.");
3651 kfree(pwrb_arr);
3652 return status;
3653 }
3654 pwrb_context = &phwi_ctrlr->wrb_context[i];
3655 BE_SET_CID_TO_CRI(i, pwrb_context->cid);
3656 }
3657 kfree(pwrb_arr);
3658 return 0;
3659 }
3660
free_wrb_handles(struct beiscsi_hba * phba)3661 static void free_wrb_handles(struct beiscsi_hba *phba)
3662 {
3663 unsigned int index;
3664 struct hwi_controller *phwi_ctrlr;
3665 struct hwi_wrb_context *pwrb_context;
3666
3667 phwi_ctrlr = phba->phwi_ctrlr;
3668 for (index = 0; index < phba->params.cxns_per_ctrl; index++) {
3669 pwrb_context = &phwi_ctrlr->wrb_context[index];
3670 kfree(pwrb_context->pwrb_handle_base);
3671 kfree(pwrb_context->pwrb_handle_basestd);
3672 }
3673 }
3674
be_mcc_queues_destroy(struct beiscsi_hba * phba)3675 static void be_mcc_queues_destroy(struct beiscsi_hba *phba)
3676 {
3677 struct be_queue_info *q;
3678 struct be_ctrl_info *ctrl = &phba->ctrl;
3679
3680 q = &phba->ctrl.mcc_obj.q;
3681 if (q->created)
3682 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_MCCQ);
3683 be_queue_free(phba, q);
3684
3685 q = &phba->ctrl.mcc_obj.cq;
3686 if (q->created)
3687 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_CQ);
3688 be_queue_free(phba, q);
3689 }
3690
hwi_cleanup(struct beiscsi_hba * phba)3691 static void hwi_cleanup(struct beiscsi_hba *phba)
3692 {
3693 struct be_queue_info *q;
3694 struct be_ctrl_info *ctrl = &phba->ctrl;
3695 struct hwi_controller *phwi_ctrlr;
3696 struct hwi_context_memory *phwi_context;
3697 struct hwi_async_pdu_context *pasync_ctx;
3698 int i, eq_for_mcc, ulp_num;
3699
3700 phwi_ctrlr = phba->phwi_ctrlr;
3701 phwi_context = phwi_ctrlr->phwi_ctxt;
3702
3703 be_cmd_iscsi_remove_template_hdr(ctrl);
3704
3705 for (i = 0; i < phba->params.cxns_per_ctrl; i++) {
3706 q = &phwi_context->be_wrbq[i];
3707 if (q->created)
3708 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_WRBQ);
3709 }
3710 kfree(phwi_context->be_wrbq);
3711 free_wrb_handles(phba);
3712
3713 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
3714 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
3715
3716 q = &phwi_context->be_def_hdrq[ulp_num];
3717 if (q->created)
3718 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_DPDUQ);
3719
3720 q = &phwi_context->be_def_dataq[ulp_num];
3721 if (q->created)
3722 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_DPDUQ);
3723
3724 pasync_ctx = phwi_ctrlr->phwi_ctxt->pasync_ctx[ulp_num];
3725 }
3726 }
3727
3728 beiscsi_cmd_q_destroy(ctrl, NULL, QTYPE_SGL);
3729
3730 for (i = 0; i < (phba->num_cpus); i++) {
3731 q = &phwi_context->be_cq[i];
3732 if (q->created)
3733 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_CQ);
3734 }
3735
3736 be_mcc_queues_destroy(phba);
3737 if (phba->msix_enabled)
3738 eq_for_mcc = 1;
3739 else
3740 eq_for_mcc = 0;
3741 for (i = 0; i < (phba->num_cpus + eq_for_mcc); i++) {
3742 q = &phwi_context->be_eq[i].q;
3743 if (q->created)
3744 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_EQ);
3745 }
3746 be_cmd_fw_uninit(ctrl);
3747 }
3748
be_mcc_queues_create(struct beiscsi_hba * phba,struct hwi_context_memory * phwi_context)3749 static int be_mcc_queues_create(struct beiscsi_hba *phba,
3750 struct hwi_context_memory *phwi_context)
3751 {
3752 struct be_queue_info *q, *cq;
3753 struct be_ctrl_info *ctrl = &phba->ctrl;
3754
3755 /* Alloc MCC compl queue */
3756 cq = &phba->ctrl.mcc_obj.cq;
3757 if (be_queue_alloc(phba, cq, MCC_CQ_LEN,
3758 sizeof(struct be_mcc_compl)))
3759 goto err;
3760 /* Ask BE to create MCC compl queue; */
3761 if (phba->msix_enabled) {
3762 if (beiscsi_cmd_cq_create(ctrl, cq, &phwi_context->be_eq
3763 [phba->num_cpus].q, false, true, 0))
3764 goto mcc_cq_free;
3765 } else {
3766 if (beiscsi_cmd_cq_create(ctrl, cq, &phwi_context->be_eq[0].q,
3767 false, true, 0))
3768 goto mcc_cq_free;
3769 }
3770
3771 /* Alloc MCC queue */
3772 q = &phba->ctrl.mcc_obj.q;
3773 if (be_queue_alloc(phba, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
3774 goto mcc_cq_destroy;
3775
3776 /* Ask BE to create MCC queue */
3777 if (beiscsi_cmd_mccq_create(phba, q, cq))
3778 goto mcc_q_free;
3779
3780 return 0;
3781
3782 mcc_q_free:
3783 be_queue_free(phba, q);
3784 mcc_cq_destroy:
3785 beiscsi_cmd_q_destroy(ctrl, cq, QTYPE_CQ);
3786 mcc_cq_free:
3787 be_queue_free(phba, cq);
3788 err:
3789 return -ENOMEM;
3790 }
3791
3792 /**
3793 * find_num_cpus()- Get the CPU online count
3794 * @phba: ptr to priv structure
3795 *
3796 * CPU count is used for creating EQ.
3797 **/
find_num_cpus(struct beiscsi_hba * phba)3798 static void find_num_cpus(struct beiscsi_hba *phba)
3799 {
3800 int num_cpus = 0;
3801
3802 num_cpus = num_online_cpus();
3803
3804 switch (phba->generation) {
3805 case BE_GEN2:
3806 case BE_GEN3:
3807 phba->num_cpus = (num_cpus > BEISCSI_MAX_NUM_CPUS) ?
3808 BEISCSI_MAX_NUM_CPUS : num_cpus;
3809 break;
3810 case BE_GEN4:
3811 /*
3812 * If eqid_count == 1 fall back to
3813 * INTX mechanism
3814 **/
3815 if (phba->fw_config.eqid_count == 1) {
3816 enable_msix = 0;
3817 phba->num_cpus = 1;
3818 return;
3819 }
3820
3821 phba->num_cpus =
3822 (num_cpus > (phba->fw_config.eqid_count - 1)) ?
3823 (phba->fw_config.eqid_count - 1) : num_cpus;
3824 break;
3825 default:
3826 phba->num_cpus = 1;
3827 }
3828 }
3829
hwi_init_port(struct beiscsi_hba * phba)3830 static int hwi_init_port(struct beiscsi_hba *phba)
3831 {
3832 struct hwi_controller *phwi_ctrlr;
3833 struct hwi_context_memory *phwi_context;
3834 unsigned int def_pdu_ring_sz;
3835 struct be_ctrl_info *ctrl = &phba->ctrl;
3836 int status, ulp_num;
3837
3838 phwi_ctrlr = phba->phwi_ctrlr;
3839 phwi_context = phwi_ctrlr->phwi_ctxt;
3840 phwi_context->max_eqd = 128;
3841 phwi_context->min_eqd = 0;
3842 phwi_context->cur_eqd = 0;
3843 be_cmd_fw_initialize(&phba->ctrl);
3844
3845 status = beiscsi_create_eqs(phba, phwi_context);
3846 if (status != 0) {
3847 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3848 "BM_%d : EQ not created\n");
3849 goto error;
3850 }
3851
3852 status = be_mcc_queues_create(phba, phwi_context);
3853 if (status != 0)
3854 goto error;
3855
3856 status = mgmt_check_supported_fw(ctrl, phba);
3857 if (status != 0) {
3858 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3859 "BM_%d : Unsupported fw version\n");
3860 goto error;
3861 }
3862
3863 status = beiscsi_create_cqs(phba, phwi_context);
3864 if (status != 0) {
3865 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3866 "BM_%d : CQ not created\n");
3867 goto error;
3868 }
3869
3870 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
3871 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
3872
3873 def_pdu_ring_sz =
3874 BEISCSI_GET_CID_COUNT(phba, ulp_num) *
3875 sizeof(struct phys_addr);
3876
3877 status = beiscsi_create_def_hdr(phba, phwi_context,
3878 phwi_ctrlr,
3879 def_pdu_ring_sz,
3880 ulp_num);
3881 if (status != 0) {
3882 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3883 "BM_%d : Default Header not created for ULP : %d\n",
3884 ulp_num);
3885 goto error;
3886 }
3887
3888 status = beiscsi_create_def_data(phba, phwi_context,
3889 phwi_ctrlr,
3890 def_pdu_ring_sz,
3891 ulp_num);
3892 if (status != 0) {
3893 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3894 "BM_%d : Default Data not created for ULP : %d\n",
3895 ulp_num);
3896 goto error;
3897 }
3898 }
3899 }
3900
3901 status = beiscsi_post_pages(phba);
3902 if (status != 0) {
3903 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3904 "BM_%d : Post SGL Pages Failed\n");
3905 goto error;
3906 }
3907
3908 status = beiscsi_post_template_hdr(phba);
3909 if (status != 0) {
3910 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3911 "BM_%d : Template HDR Posting for CXN Failed\n");
3912 }
3913
3914 status = beiscsi_create_wrb_rings(phba, phwi_context, phwi_ctrlr);
3915 if (status != 0) {
3916 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3917 "BM_%d : WRB Rings not created\n");
3918 goto error;
3919 }
3920
3921 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
3922 uint16_t async_arr_idx = 0;
3923
3924 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
3925 uint16_t cri = 0;
3926 struct hwi_async_pdu_context *pasync_ctx;
3927
3928 pasync_ctx = HWI_GET_ASYNC_PDU_CTX(
3929 phwi_ctrlr, ulp_num);
3930 for (cri = 0; cri <
3931 phba->params.cxns_per_ctrl; cri++) {
3932 if (ulp_num == BEISCSI_GET_ULP_FROM_CRI
3933 (phwi_ctrlr, cri))
3934 pasync_ctx->cid_to_async_cri_map[
3935 phwi_ctrlr->wrb_context[cri].cid] =
3936 async_arr_idx++;
3937 }
3938 }
3939 }
3940
3941 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3942 "BM_%d : hwi_init_port success\n");
3943 return 0;
3944
3945 error:
3946 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3947 "BM_%d : hwi_init_port failed");
3948 hwi_cleanup(phba);
3949 return status;
3950 }
3951
hwi_init_controller(struct beiscsi_hba * phba)3952 static int hwi_init_controller(struct beiscsi_hba *phba)
3953 {
3954 struct hwi_controller *phwi_ctrlr;
3955
3956 phwi_ctrlr = phba->phwi_ctrlr;
3957 if (1 == phba->init_mem[HWI_MEM_ADDN_CONTEXT].num_elements) {
3958 phwi_ctrlr->phwi_ctxt = (struct hwi_context_memory *)phba->
3959 init_mem[HWI_MEM_ADDN_CONTEXT].mem_array[0].virtual_address;
3960 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3961 "BM_%d : phwi_ctrlr->phwi_ctxt=%p\n",
3962 phwi_ctrlr->phwi_ctxt);
3963 } else {
3964 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3965 "BM_%d : HWI_MEM_ADDN_CONTEXT is more "
3966 "than one element.Failing to load\n");
3967 return -ENOMEM;
3968 }
3969
3970 iscsi_init_global_templates(phba);
3971 if (beiscsi_init_wrb_handle(phba))
3972 return -ENOMEM;
3973
3974 if (hwi_init_async_pdu_ctx(phba)) {
3975 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3976 "BM_%d : hwi_init_async_pdu_ctx failed\n");
3977 return -ENOMEM;
3978 }
3979
3980 if (hwi_init_port(phba) != 0) {
3981 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3982 "BM_%d : hwi_init_controller failed\n");
3983
3984 return -ENOMEM;
3985 }
3986 return 0;
3987 }
3988
beiscsi_free_mem(struct beiscsi_hba * phba)3989 static void beiscsi_free_mem(struct beiscsi_hba *phba)
3990 {
3991 struct be_mem_descriptor *mem_descr;
3992 int i, j;
3993
3994 mem_descr = phba->init_mem;
3995 i = 0;
3996 j = 0;
3997 for (i = 0; i < SE_MEM_MAX; i++) {
3998 for (j = mem_descr->num_elements; j > 0; j--) {
3999 pci_free_consistent(phba->pcidev,
4000 mem_descr->mem_array[j - 1].size,
4001 mem_descr->mem_array[j - 1].virtual_address,
4002 (unsigned long)mem_descr->mem_array[j - 1].
4003 bus_address.u.a64.address);
4004 }
4005
4006 kfree(mem_descr->mem_array);
4007 mem_descr++;
4008 }
4009 kfree(phba->init_mem);
4010 kfree(phba->phwi_ctrlr->wrb_context);
4011 kfree(phba->phwi_ctrlr);
4012 }
4013
beiscsi_init_controller(struct beiscsi_hba * phba)4014 static int beiscsi_init_controller(struct beiscsi_hba *phba)
4015 {
4016 int ret = -ENOMEM;
4017
4018 ret = beiscsi_get_memory(phba);
4019 if (ret < 0) {
4020 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4021 "BM_%d : beiscsi_dev_probe -"
4022 "Failed in beiscsi_alloc_memory\n");
4023 return ret;
4024 }
4025
4026 ret = hwi_init_controller(phba);
4027 if (ret)
4028 goto free_init;
4029 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
4030 "BM_%d : Return success from beiscsi_init_controller");
4031
4032 return 0;
4033
4034 free_init:
4035 beiscsi_free_mem(phba);
4036 return ret;
4037 }
4038
beiscsi_init_sgl_handle(struct beiscsi_hba * phba)4039 static int beiscsi_init_sgl_handle(struct beiscsi_hba *phba)
4040 {
4041 struct be_mem_descriptor *mem_descr_sglh, *mem_descr_sg;
4042 struct sgl_handle *psgl_handle;
4043 struct iscsi_sge *pfrag;
4044 unsigned int arr_index, i, idx;
4045 unsigned int ulp_icd_start, ulp_num = 0;
4046
4047 phba->io_sgl_hndl_avbl = 0;
4048 phba->eh_sgl_hndl_avbl = 0;
4049
4050 mem_descr_sglh = phba->init_mem;
4051 mem_descr_sglh += HWI_MEM_SGLH;
4052 if (1 == mem_descr_sglh->num_elements) {
4053 phba->io_sgl_hndl_base = kzalloc(sizeof(struct sgl_handle *) *
4054 phba->params.ios_per_ctrl,
4055 GFP_KERNEL);
4056 if (!phba->io_sgl_hndl_base) {
4057 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4058 "BM_%d : Mem Alloc Failed. Failing to load\n");
4059 return -ENOMEM;
4060 }
4061 phba->eh_sgl_hndl_base = kzalloc(sizeof(struct sgl_handle *) *
4062 (phba->params.icds_per_ctrl -
4063 phba->params.ios_per_ctrl),
4064 GFP_KERNEL);
4065 if (!phba->eh_sgl_hndl_base) {
4066 kfree(phba->io_sgl_hndl_base);
4067 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4068 "BM_%d : Mem Alloc Failed. Failing to load\n");
4069 return -ENOMEM;
4070 }
4071 } else {
4072 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4073 "BM_%d : HWI_MEM_SGLH is more than one element."
4074 "Failing to load\n");
4075 return -ENOMEM;
4076 }
4077
4078 arr_index = 0;
4079 idx = 0;
4080 while (idx < mem_descr_sglh->num_elements) {
4081 psgl_handle = mem_descr_sglh->mem_array[idx].virtual_address;
4082
4083 for (i = 0; i < (mem_descr_sglh->mem_array[idx].size /
4084 sizeof(struct sgl_handle)); i++) {
4085 if (arr_index < phba->params.ios_per_ctrl) {
4086 phba->io_sgl_hndl_base[arr_index] = psgl_handle;
4087 phba->io_sgl_hndl_avbl++;
4088 arr_index++;
4089 } else {
4090 phba->eh_sgl_hndl_base[arr_index -
4091 phba->params.ios_per_ctrl] =
4092 psgl_handle;
4093 arr_index++;
4094 phba->eh_sgl_hndl_avbl++;
4095 }
4096 psgl_handle++;
4097 }
4098 idx++;
4099 }
4100 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
4101 "BM_%d : phba->io_sgl_hndl_avbl=%d"
4102 "phba->eh_sgl_hndl_avbl=%d\n",
4103 phba->io_sgl_hndl_avbl,
4104 phba->eh_sgl_hndl_avbl);
4105
4106 mem_descr_sg = phba->init_mem;
4107 mem_descr_sg += HWI_MEM_SGE;
4108 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
4109 "\n BM_%d : mem_descr_sg->num_elements=%d\n",
4110 mem_descr_sg->num_elements);
4111
4112 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++)
4113 if (test_bit(ulp_num, &phba->fw_config.ulp_supported))
4114 break;
4115
4116 ulp_icd_start = phba->fw_config.iscsi_icd_start[ulp_num];
4117
4118 arr_index = 0;
4119 idx = 0;
4120 while (idx < mem_descr_sg->num_elements) {
4121 pfrag = mem_descr_sg->mem_array[idx].virtual_address;
4122
4123 for (i = 0;
4124 i < (mem_descr_sg->mem_array[idx].size) /
4125 (sizeof(struct iscsi_sge) * phba->params.num_sge_per_io);
4126 i++) {
4127 if (arr_index < phba->params.ios_per_ctrl)
4128 psgl_handle = phba->io_sgl_hndl_base[arr_index];
4129 else
4130 psgl_handle = phba->eh_sgl_hndl_base[arr_index -
4131 phba->params.ios_per_ctrl];
4132 psgl_handle->pfrag = pfrag;
4133 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, pfrag, 0);
4134 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, pfrag, 0);
4135 pfrag += phba->params.num_sge_per_io;
4136 psgl_handle->sgl_index = ulp_icd_start + arr_index++;
4137 }
4138 idx++;
4139 }
4140 phba->io_sgl_free_index = 0;
4141 phba->io_sgl_alloc_index = 0;
4142 phba->eh_sgl_free_index = 0;
4143 phba->eh_sgl_alloc_index = 0;
4144 return 0;
4145 }
4146
hba_setup_cid_tbls(struct beiscsi_hba * phba)4147 static int hba_setup_cid_tbls(struct beiscsi_hba *phba)
4148 {
4149 int ret;
4150 uint16_t i, ulp_num;
4151 struct ulp_cid_info *ptr_cid_info = NULL;
4152
4153 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
4154 if (test_bit(ulp_num, (void *)&phba->fw_config.ulp_supported)) {
4155 ptr_cid_info = kzalloc(sizeof(struct ulp_cid_info),
4156 GFP_KERNEL);
4157
4158 if (!ptr_cid_info) {
4159 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4160 "BM_%d : Failed to allocate memory"
4161 "for ULP_CID_INFO for ULP : %d\n",
4162 ulp_num);
4163 ret = -ENOMEM;
4164 goto free_memory;
4165
4166 }
4167
4168 /* Allocate memory for CID array */
4169 ptr_cid_info->cid_array = kzalloc(sizeof(void *) *
4170 BEISCSI_GET_CID_COUNT(phba,
4171 ulp_num), GFP_KERNEL);
4172 if (!ptr_cid_info->cid_array) {
4173 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4174 "BM_%d : Failed to allocate memory"
4175 "for CID_ARRAY for ULP : %d\n",
4176 ulp_num);
4177 kfree(ptr_cid_info);
4178 ptr_cid_info = NULL;
4179 ret = -ENOMEM;
4180
4181 goto free_memory;
4182 }
4183 ptr_cid_info->avlbl_cids = BEISCSI_GET_CID_COUNT(
4184 phba, ulp_num);
4185
4186 /* Save the cid_info_array ptr */
4187 phba->cid_array_info[ulp_num] = ptr_cid_info;
4188 }
4189 }
4190 phba->ep_array = kzalloc(sizeof(struct iscsi_endpoint *) *
4191 phba->params.cxns_per_ctrl, GFP_KERNEL);
4192 if (!phba->ep_array) {
4193 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4194 "BM_%d : Failed to allocate memory in "
4195 "hba_setup_cid_tbls\n");
4196 ret = -ENOMEM;
4197
4198 goto free_memory;
4199 }
4200
4201 phba->conn_table = kzalloc(sizeof(struct beiscsi_conn *) *
4202 phba->params.cxns_per_ctrl, GFP_KERNEL);
4203 if (!phba->conn_table) {
4204 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4205 "BM_%d : Failed to allocate memory in"
4206 "hba_setup_cid_tbls\n");
4207
4208 kfree(phba->ep_array);
4209 phba->ep_array = NULL;
4210 ret = -ENOMEM;
4211
4212 goto free_memory;
4213 }
4214
4215 for (i = 0; i < phba->params.cxns_per_ctrl; i++) {
4216 ulp_num = phba->phwi_ctrlr->wrb_context[i].ulp_num;
4217
4218 ptr_cid_info = phba->cid_array_info[ulp_num];
4219 ptr_cid_info->cid_array[ptr_cid_info->cid_alloc++] =
4220 phba->phwi_ctrlr->wrb_context[i].cid;
4221
4222 }
4223
4224 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
4225 if (test_bit(ulp_num, (void *)&phba->fw_config.ulp_supported)) {
4226 ptr_cid_info = phba->cid_array_info[ulp_num];
4227
4228 ptr_cid_info->cid_alloc = 0;
4229 ptr_cid_info->cid_free = 0;
4230 }
4231 }
4232 return 0;
4233
4234 free_memory:
4235 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
4236 if (test_bit(ulp_num, (void *)&phba->fw_config.ulp_supported)) {
4237 ptr_cid_info = phba->cid_array_info[ulp_num];
4238
4239 if (ptr_cid_info) {
4240 kfree(ptr_cid_info->cid_array);
4241 kfree(ptr_cid_info);
4242 phba->cid_array_info[ulp_num] = NULL;
4243 }
4244 }
4245 }
4246
4247 return ret;
4248 }
4249
hwi_enable_intr(struct beiscsi_hba * phba)4250 static void hwi_enable_intr(struct beiscsi_hba *phba)
4251 {
4252 struct be_ctrl_info *ctrl = &phba->ctrl;
4253 struct hwi_controller *phwi_ctrlr;
4254 struct hwi_context_memory *phwi_context;
4255 struct be_queue_info *eq;
4256 u8 __iomem *addr;
4257 u32 reg, i;
4258 u32 enabled;
4259
4260 phwi_ctrlr = phba->phwi_ctrlr;
4261 phwi_context = phwi_ctrlr->phwi_ctxt;
4262
4263 addr = (u8 __iomem *) ((u8 __iomem *) ctrl->pcicfg +
4264 PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET);
4265 reg = ioread32(addr);
4266
4267 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
4268 if (!enabled) {
4269 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
4270 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
4271 "BM_%d : reg =x%08x addr=%p\n", reg, addr);
4272 iowrite32(reg, addr);
4273 }
4274
4275 if (!phba->msix_enabled) {
4276 eq = &phwi_context->be_eq[0].q;
4277 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
4278 "BM_%d : eq->id=%d\n", eq->id);
4279
4280 hwi_ring_eq_db(phba, eq->id, 0, 0, 1, 1);
4281 } else {
4282 for (i = 0; i <= phba->num_cpus; i++) {
4283 eq = &phwi_context->be_eq[i].q;
4284 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
4285 "BM_%d : eq->id=%d\n", eq->id);
4286 hwi_ring_eq_db(phba, eq->id, 0, 0, 1, 1);
4287 }
4288 }
4289 }
4290
hwi_disable_intr(struct beiscsi_hba * phba)4291 static void hwi_disable_intr(struct beiscsi_hba *phba)
4292 {
4293 struct be_ctrl_info *ctrl = &phba->ctrl;
4294
4295 u8 __iomem *addr = ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
4296 u32 reg = ioread32(addr);
4297
4298 u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
4299 if (enabled) {
4300 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
4301 iowrite32(reg, addr);
4302 } else
4303 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_INIT,
4304 "BM_%d : In hwi_disable_intr, Already Disabled\n");
4305 }
4306
4307 /**
4308 * beiscsi_get_boot_info()- Get the boot session info
4309 * @phba: The device priv structure instance
4310 *
4311 * Get the boot target info and store in driver priv structure
4312 *
4313 * return values
4314 * Success: 0
4315 * Failure: Non-Zero Value
4316 **/
beiscsi_get_boot_info(struct beiscsi_hba * phba)4317 static int beiscsi_get_boot_info(struct beiscsi_hba *phba)
4318 {
4319 struct be_cmd_get_session_resp *session_resp;
4320 struct be_dma_mem nonemb_cmd;
4321 unsigned int tag;
4322 unsigned int s_handle;
4323 int ret = -ENOMEM;
4324
4325 /* Get the session handle of the boot target */
4326 ret = be_mgmt_get_boot_shandle(phba, &s_handle);
4327 if (ret) {
4328 beiscsi_log(phba, KERN_ERR,
4329 BEISCSI_LOG_INIT | BEISCSI_LOG_CONFIG,
4330 "BM_%d : No boot session\n");
4331 return ret;
4332 }
4333 nonemb_cmd.va = pci_zalloc_consistent(phba->ctrl.pdev,
4334 sizeof(*session_resp),
4335 &nonemb_cmd.dma);
4336 if (nonemb_cmd.va == NULL) {
4337 beiscsi_log(phba, KERN_ERR,
4338 BEISCSI_LOG_INIT | BEISCSI_LOG_CONFIG,
4339 "BM_%d : Failed to allocate memory for"
4340 "beiscsi_get_session_info\n");
4341
4342 return -ENOMEM;
4343 }
4344
4345 tag = mgmt_get_session_info(phba, s_handle,
4346 &nonemb_cmd);
4347 if (!tag) {
4348 beiscsi_log(phba, KERN_ERR,
4349 BEISCSI_LOG_INIT | BEISCSI_LOG_CONFIG,
4350 "BM_%d : beiscsi_get_session_info"
4351 " Failed\n");
4352
4353 goto boot_freemem;
4354 }
4355
4356 ret = beiscsi_mccq_compl(phba, tag, NULL, &nonemb_cmd);
4357 if (ret) {
4358 beiscsi_log(phba, KERN_ERR,
4359 BEISCSI_LOG_INIT | BEISCSI_LOG_CONFIG,
4360 "BM_%d : beiscsi_get_session_info Failed");
4361
4362 if (ret != -EBUSY)
4363 goto boot_freemem;
4364 else
4365 return ret;
4366 }
4367
4368 session_resp = nonemb_cmd.va ;
4369
4370 memcpy(&phba->boot_sess, &session_resp->session_info,
4371 sizeof(struct mgmt_session_info));
4372 ret = 0;
4373
4374 boot_freemem:
4375 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
4376 nonemb_cmd.va, nonemb_cmd.dma);
4377 return ret;
4378 }
4379
beiscsi_boot_release(void * data)4380 static void beiscsi_boot_release(void *data)
4381 {
4382 struct beiscsi_hba *phba = data;
4383
4384 scsi_host_put(phba->shost);
4385 }
4386
beiscsi_setup_boot_info(struct beiscsi_hba * phba)4387 static int beiscsi_setup_boot_info(struct beiscsi_hba *phba)
4388 {
4389 struct iscsi_boot_kobj *boot_kobj;
4390
4391 /* it has been created previously */
4392 if (phba->boot_kset)
4393 return 0;
4394
4395 /* get boot info using mgmt cmd */
4396 if (beiscsi_get_boot_info(phba))
4397 /* Try to see if we can carry on without this */
4398 return 0;
4399
4400 phba->boot_kset = iscsi_boot_create_host_kset(phba->shost->host_no);
4401 if (!phba->boot_kset)
4402 return -ENOMEM;
4403
4404 /* get a ref because the show function will ref the phba */
4405 if (!scsi_host_get(phba->shost))
4406 goto free_kset;
4407 boot_kobj = iscsi_boot_create_target(phba->boot_kset, 0, phba,
4408 beiscsi_show_boot_tgt_info,
4409 beiscsi_tgt_get_attr_visibility,
4410 beiscsi_boot_release);
4411 if (!boot_kobj)
4412 goto put_shost;
4413
4414 if (!scsi_host_get(phba->shost))
4415 goto free_kset;
4416 boot_kobj = iscsi_boot_create_initiator(phba->boot_kset, 0, phba,
4417 beiscsi_show_boot_ini_info,
4418 beiscsi_ini_get_attr_visibility,
4419 beiscsi_boot_release);
4420 if (!boot_kobj)
4421 goto put_shost;
4422
4423 if (!scsi_host_get(phba->shost))
4424 goto free_kset;
4425 boot_kobj = iscsi_boot_create_ethernet(phba->boot_kset, 0, phba,
4426 beiscsi_show_boot_eth_info,
4427 beiscsi_eth_get_attr_visibility,
4428 beiscsi_boot_release);
4429 if (!boot_kobj)
4430 goto put_shost;
4431 return 0;
4432
4433 put_shost:
4434 scsi_host_put(phba->shost);
4435 free_kset:
4436 iscsi_boot_destroy_kset(phba->boot_kset);
4437 phba->boot_kset = NULL;
4438 return -ENOMEM;
4439 }
4440
beiscsi_init_port(struct beiscsi_hba * phba)4441 static int beiscsi_init_port(struct beiscsi_hba *phba)
4442 {
4443 int ret;
4444
4445 ret = beiscsi_init_controller(phba);
4446 if (ret < 0) {
4447 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4448 "BM_%d : beiscsi_dev_probe - Failed in"
4449 "beiscsi_init_controller\n");
4450 return ret;
4451 }
4452 ret = beiscsi_init_sgl_handle(phba);
4453 if (ret < 0) {
4454 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4455 "BM_%d : beiscsi_dev_probe - Failed in"
4456 "beiscsi_init_sgl_handle\n");
4457 goto do_cleanup_ctrlr;
4458 }
4459
4460 if (hba_setup_cid_tbls(phba)) {
4461 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4462 "BM_%d : Failed in hba_setup_cid_tbls\n");
4463 kfree(phba->io_sgl_hndl_base);
4464 kfree(phba->eh_sgl_hndl_base);
4465 goto do_cleanup_ctrlr;
4466 }
4467
4468 return ret;
4469
4470 do_cleanup_ctrlr:
4471 hwi_cleanup(phba);
4472 return ret;
4473 }
4474
hwi_purge_eq(struct beiscsi_hba * phba)4475 static void hwi_purge_eq(struct beiscsi_hba *phba)
4476 {
4477 struct hwi_controller *phwi_ctrlr;
4478 struct hwi_context_memory *phwi_context;
4479 struct be_queue_info *eq;
4480 struct be_eq_entry *eqe = NULL;
4481 int i, eq_msix;
4482 unsigned int num_processed;
4483
4484 phwi_ctrlr = phba->phwi_ctrlr;
4485 phwi_context = phwi_ctrlr->phwi_ctxt;
4486 if (phba->msix_enabled)
4487 eq_msix = 1;
4488 else
4489 eq_msix = 0;
4490
4491 for (i = 0; i < (phba->num_cpus + eq_msix); i++) {
4492 eq = &phwi_context->be_eq[i].q;
4493 eqe = queue_tail_node(eq);
4494 num_processed = 0;
4495 while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32]
4496 & EQE_VALID_MASK) {
4497 AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);
4498 queue_tail_inc(eq);
4499 eqe = queue_tail_node(eq);
4500 num_processed++;
4501 }
4502
4503 if (num_processed)
4504 hwi_ring_eq_db(phba, eq->id, 1, num_processed, 1, 1);
4505 }
4506 }
4507
beiscsi_clean_port(struct beiscsi_hba * phba)4508 static void beiscsi_clean_port(struct beiscsi_hba *phba)
4509 {
4510 int mgmt_status, ulp_num;
4511 struct ulp_cid_info *ptr_cid_info = NULL;
4512
4513 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
4514 if (test_bit(ulp_num, (void *)&phba->fw_config.ulp_supported)) {
4515 mgmt_status = mgmt_epfw_cleanup(phba, ulp_num);
4516 if (mgmt_status)
4517 beiscsi_log(phba, KERN_WARNING,
4518 BEISCSI_LOG_INIT,
4519 "BM_%d : mgmt_epfw_cleanup FAILED"
4520 " for ULP_%d\n", ulp_num);
4521 }
4522 }
4523
4524 hwi_purge_eq(phba);
4525 hwi_cleanup(phba);
4526 kfree(phba->io_sgl_hndl_base);
4527 kfree(phba->eh_sgl_hndl_base);
4528 kfree(phba->ep_array);
4529 kfree(phba->conn_table);
4530
4531 for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
4532 if (test_bit(ulp_num, (void *)&phba->fw_config.ulp_supported)) {
4533 ptr_cid_info = phba->cid_array_info[ulp_num];
4534
4535 if (ptr_cid_info) {
4536 kfree(ptr_cid_info->cid_array);
4537 kfree(ptr_cid_info);
4538 phba->cid_array_info[ulp_num] = NULL;
4539 }
4540 }
4541 }
4542
4543 }
4544
4545 /**
4546 * beiscsi_free_mgmt_task_handles()- Free driver CXN resources
4547 * @beiscsi_conn: ptr to the conn to be cleaned up
4548 * @task: ptr to iscsi_task resource to be freed.
4549 *
4550 * Free driver mgmt resources binded to CXN.
4551 **/
4552 void
beiscsi_free_mgmt_task_handles(struct beiscsi_conn * beiscsi_conn,struct iscsi_task * task)4553 beiscsi_free_mgmt_task_handles(struct beiscsi_conn *beiscsi_conn,
4554 struct iscsi_task *task)
4555 {
4556 struct beiscsi_io_task *io_task;
4557 struct beiscsi_hba *phba = beiscsi_conn->phba;
4558 struct hwi_wrb_context *pwrb_context;
4559 struct hwi_controller *phwi_ctrlr;
4560 uint16_t cri_index = BE_GET_CRI_FROM_CID(
4561 beiscsi_conn->beiscsi_conn_cid);
4562
4563 phwi_ctrlr = phba->phwi_ctrlr;
4564 pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
4565
4566 io_task = task->dd_data;
4567
4568 if (io_task->pwrb_handle) {
4569 memset(io_task->pwrb_handle->pwrb, 0,
4570 sizeof(struct iscsi_wrb));
4571 free_wrb_handle(phba, pwrb_context,
4572 io_task->pwrb_handle);
4573 io_task->pwrb_handle = NULL;
4574 }
4575
4576 if (io_task->psgl_handle) {
4577 spin_lock_bh(&phba->mgmt_sgl_lock);
4578 free_mgmt_sgl_handle(phba,
4579 io_task->psgl_handle);
4580 io_task->psgl_handle = NULL;
4581 spin_unlock_bh(&phba->mgmt_sgl_lock);
4582 }
4583
4584 if (io_task->mtask_addr)
4585 pci_unmap_single(phba->pcidev,
4586 io_task->mtask_addr,
4587 io_task->mtask_data_count,
4588 PCI_DMA_TODEVICE);
4589 }
4590
4591 /**
4592 * beiscsi_cleanup_task()- Free driver resources of the task
4593 * @task: ptr to the iscsi task
4594 *
4595 **/
beiscsi_cleanup_task(struct iscsi_task * task)4596 static void beiscsi_cleanup_task(struct iscsi_task *task)
4597 {
4598 struct beiscsi_io_task *io_task = task->dd_data;
4599 struct iscsi_conn *conn = task->conn;
4600 struct beiscsi_conn *beiscsi_conn = conn->dd_data;
4601 struct beiscsi_hba *phba = beiscsi_conn->phba;
4602 struct beiscsi_session *beiscsi_sess = beiscsi_conn->beiscsi_sess;
4603 struct hwi_wrb_context *pwrb_context;
4604 struct hwi_controller *phwi_ctrlr;
4605 uint16_t cri_index = BE_GET_CRI_FROM_CID(
4606 beiscsi_conn->beiscsi_conn_cid);
4607
4608 phwi_ctrlr = phba->phwi_ctrlr;
4609 pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
4610
4611 if (io_task->cmd_bhs) {
4612 pci_pool_free(beiscsi_sess->bhs_pool, io_task->cmd_bhs,
4613 io_task->bhs_pa.u.a64.address);
4614 io_task->cmd_bhs = NULL;
4615 }
4616
4617 if (task->sc) {
4618 if (io_task->pwrb_handle) {
4619 free_wrb_handle(phba, pwrb_context,
4620 io_task->pwrb_handle);
4621 io_task->pwrb_handle = NULL;
4622 }
4623
4624 if (io_task->psgl_handle) {
4625 spin_lock(&phba->io_sgl_lock);
4626 free_io_sgl_handle(phba, io_task->psgl_handle);
4627 spin_unlock(&phba->io_sgl_lock);
4628 io_task->psgl_handle = NULL;
4629 }
4630
4631 if (io_task->scsi_cmnd) {
4632 scsi_dma_unmap(io_task->scsi_cmnd);
4633 io_task->scsi_cmnd = NULL;
4634 }
4635 } else {
4636 if (!beiscsi_conn->login_in_progress)
4637 beiscsi_free_mgmt_task_handles(beiscsi_conn, task);
4638 }
4639 }
4640
4641 void
beiscsi_offload_connection(struct beiscsi_conn * beiscsi_conn,struct beiscsi_offload_params * params)4642 beiscsi_offload_connection(struct beiscsi_conn *beiscsi_conn,
4643 struct beiscsi_offload_params *params)
4644 {
4645 struct wrb_handle *pwrb_handle;
4646 struct beiscsi_hba *phba = beiscsi_conn->phba;
4647 struct iscsi_task *task = beiscsi_conn->task;
4648 struct iscsi_session *session = task->conn->session;
4649 u32 doorbell = 0;
4650
4651 /*
4652 * We can always use 0 here because it is reserved by libiscsi for
4653 * login/startup related tasks.
4654 */
4655 beiscsi_conn->login_in_progress = 0;
4656 spin_lock_bh(&session->back_lock);
4657 beiscsi_cleanup_task(task);
4658 spin_unlock_bh(&session->back_lock);
4659
4660 pwrb_handle = alloc_wrb_handle(phba, beiscsi_conn->beiscsi_conn_cid);
4661
4662 /* Check for the adapter family */
4663 if (is_chip_be2_be3r(phba))
4664 beiscsi_offload_cxn_v0(params, pwrb_handle,
4665 phba->init_mem);
4666 else
4667 beiscsi_offload_cxn_v2(params, pwrb_handle);
4668
4669 be_dws_le_to_cpu(pwrb_handle->pwrb,
4670 sizeof(struct iscsi_target_context_update_wrb));
4671
4672 doorbell |= beiscsi_conn->beiscsi_conn_cid & DB_WRB_POST_CID_MASK;
4673 doorbell |= (pwrb_handle->wrb_index & DB_DEF_PDU_WRB_INDEX_MASK)
4674 << DB_DEF_PDU_WRB_INDEX_SHIFT;
4675 doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT;
4676 iowrite32(doorbell, phba->db_va +
4677 beiscsi_conn->doorbell_offset);
4678 }
4679
beiscsi_parse_pdu(struct iscsi_conn * conn,itt_t itt,int * index,int * age)4680 static void beiscsi_parse_pdu(struct iscsi_conn *conn, itt_t itt,
4681 int *index, int *age)
4682 {
4683 *index = (int)itt;
4684 if (age)
4685 *age = conn->session->age;
4686 }
4687
4688 /**
4689 * beiscsi_alloc_pdu - allocates pdu and related resources
4690 * @task: libiscsi task
4691 * @opcode: opcode of pdu for task
4692 *
4693 * This is called with the session lock held. It will allocate
4694 * the wrb and sgl if needed for the command. And it will prep
4695 * the pdu's itt. beiscsi_parse_pdu will later translate
4696 * the pdu itt to the libiscsi task itt.
4697 */
beiscsi_alloc_pdu(struct iscsi_task * task,uint8_t opcode)4698 static int beiscsi_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
4699 {
4700 struct beiscsi_io_task *io_task = task->dd_data;
4701 struct iscsi_conn *conn = task->conn;
4702 struct beiscsi_conn *beiscsi_conn = conn->dd_data;
4703 struct beiscsi_hba *phba = beiscsi_conn->phba;
4704 struct hwi_wrb_context *pwrb_context;
4705 struct hwi_controller *phwi_ctrlr;
4706 itt_t itt;
4707 uint16_t cri_index = 0;
4708 struct beiscsi_session *beiscsi_sess = beiscsi_conn->beiscsi_sess;
4709 dma_addr_t paddr;
4710
4711 io_task->cmd_bhs = pci_pool_alloc(beiscsi_sess->bhs_pool,
4712 GFP_ATOMIC, &paddr);
4713 if (!io_task->cmd_bhs)
4714 return -ENOMEM;
4715 io_task->bhs_pa.u.a64.address = paddr;
4716 io_task->libiscsi_itt = (itt_t)task->itt;
4717 io_task->conn = beiscsi_conn;
4718
4719 task->hdr = (struct iscsi_hdr *)&io_task->cmd_bhs->iscsi_hdr;
4720 task->hdr_max = sizeof(struct be_cmd_bhs);
4721 io_task->psgl_handle = NULL;
4722 io_task->pwrb_handle = NULL;
4723
4724 if (task->sc) {
4725 spin_lock(&phba->io_sgl_lock);
4726 io_task->psgl_handle = alloc_io_sgl_handle(phba);
4727 spin_unlock(&phba->io_sgl_lock);
4728 if (!io_task->psgl_handle) {
4729 beiscsi_log(phba, KERN_ERR,
4730 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
4731 "BM_%d : Alloc of IO_SGL_ICD Failed"
4732 "for the CID : %d\n",
4733 beiscsi_conn->beiscsi_conn_cid);
4734 goto free_hndls;
4735 }
4736 io_task->pwrb_handle = alloc_wrb_handle(phba,
4737 beiscsi_conn->beiscsi_conn_cid);
4738 if (!io_task->pwrb_handle) {
4739 beiscsi_log(phba, KERN_ERR,
4740 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
4741 "BM_%d : Alloc of WRB_HANDLE Failed"
4742 "for the CID : %d\n",
4743 beiscsi_conn->beiscsi_conn_cid);
4744 goto free_io_hndls;
4745 }
4746 } else {
4747 io_task->scsi_cmnd = NULL;
4748 if ((opcode & ISCSI_OPCODE_MASK) == ISCSI_OP_LOGIN) {
4749 beiscsi_conn->task = task;
4750 if (!beiscsi_conn->login_in_progress) {
4751 spin_lock(&phba->mgmt_sgl_lock);
4752 io_task->psgl_handle = (struct sgl_handle *)
4753 alloc_mgmt_sgl_handle(phba);
4754 spin_unlock(&phba->mgmt_sgl_lock);
4755 if (!io_task->psgl_handle) {
4756 beiscsi_log(phba, KERN_ERR,
4757 BEISCSI_LOG_IO |
4758 BEISCSI_LOG_CONFIG,
4759 "BM_%d : Alloc of MGMT_SGL_ICD Failed"
4760 "for the CID : %d\n",
4761 beiscsi_conn->
4762 beiscsi_conn_cid);
4763 goto free_hndls;
4764 }
4765
4766 beiscsi_conn->login_in_progress = 1;
4767 beiscsi_conn->plogin_sgl_handle =
4768 io_task->psgl_handle;
4769 io_task->pwrb_handle =
4770 alloc_wrb_handle(phba,
4771 beiscsi_conn->beiscsi_conn_cid);
4772 if (!io_task->pwrb_handle) {
4773 beiscsi_log(phba, KERN_ERR,
4774 BEISCSI_LOG_IO |
4775 BEISCSI_LOG_CONFIG,
4776 "BM_%d : Alloc of WRB_HANDLE Failed"
4777 "for the CID : %d\n",
4778 beiscsi_conn->
4779 beiscsi_conn_cid);
4780 goto free_mgmt_hndls;
4781 }
4782 beiscsi_conn->plogin_wrb_handle =
4783 io_task->pwrb_handle;
4784
4785 } else {
4786 io_task->psgl_handle =
4787 beiscsi_conn->plogin_sgl_handle;
4788 io_task->pwrb_handle =
4789 beiscsi_conn->plogin_wrb_handle;
4790 }
4791 } else {
4792 spin_lock(&phba->mgmt_sgl_lock);
4793 io_task->psgl_handle = alloc_mgmt_sgl_handle(phba);
4794 spin_unlock(&phba->mgmt_sgl_lock);
4795 if (!io_task->psgl_handle) {
4796 beiscsi_log(phba, KERN_ERR,
4797 BEISCSI_LOG_IO |
4798 BEISCSI_LOG_CONFIG,
4799 "BM_%d : Alloc of MGMT_SGL_ICD Failed"
4800 "for the CID : %d\n",
4801 beiscsi_conn->
4802 beiscsi_conn_cid);
4803 goto free_hndls;
4804 }
4805 io_task->pwrb_handle =
4806 alloc_wrb_handle(phba,
4807 beiscsi_conn->beiscsi_conn_cid);
4808 if (!io_task->pwrb_handle) {
4809 beiscsi_log(phba, KERN_ERR,
4810 BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
4811 "BM_%d : Alloc of WRB_HANDLE Failed"
4812 "for the CID : %d\n",
4813 beiscsi_conn->beiscsi_conn_cid);
4814 goto free_mgmt_hndls;
4815 }
4816
4817 }
4818 }
4819 itt = (itt_t) cpu_to_be32(((unsigned int)io_task->pwrb_handle->
4820 wrb_index << 16) | (unsigned int)
4821 (io_task->psgl_handle->sgl_index));
4822 io_task->pwrb_handle->pio_handle = task;
4823
4824 io_task->cmd_bhs->iscsi_hdr.itt = itt;
4825 return 0;
4826
4827 free_io_hndls:
4828 spin_lock(&phba->io_sgl_lock);
4829 free_io_sgl_handle(phba, io_task->psgl_handle);
4830 spin_unlock(&phba->io_sgl_lock);
4831 goto free_hndls;
4832 free_mgmt_hndls:
4833 spin_lock(&phba->mgmt_sgl_lock);
4834 free_mgmt_sgl_handle(phba, io_task->psgl_handle);
4835 io_task->psgl_handle = NULL;
4836 spin_unlock(&phba->mgmt_sgl_lock);
4837 free_hndls:
4838 phwi_ctrlr = phba->phwi_ctrlr;
4839 cri_index = BE_GET_CRI_FROM_CID(
4840 beiscsi_conn->beiscsi_conn_cid);
4841 pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
4842 if (io_task->pwrb_handle)
4843 free_wrb_handle(phba, pwrb_context, io_task->pwrb_handle);
4844 io_task->pwrb_handle = NULL;
4845 pci_pool_free(beiscsi_sess->bhs_pool, io_task->cmd_bhs,
4846 io_task->bhs_pa.u.a64.address);
4847 io_task->cmd_bhs = NULL;
4848 return -ENOMEM;
4849 }
beiscsi_iotask_v2(struct iscsi_task * task,struct scatterlist * sg,unsigned int num_sg,unsigned int xferlen,unsigned int writedir)4850 int beiscsi_iotask_v2(struct iscsi_task *task, struct scatterlist *sg,
4851 unsigned int num_sg, unsigned int xferlen,
4852 unsigned int writedir)
4853 {
4854
4855 struct beiscsi_io_task *io_task = task->dd_data;
4856 struct iscsi_conn *conn = task->conn;
4857 struct beiscsi_conn *beiscsi_conn = conn->dd_data;
4858 struct beiscsi_hba *phba = beiscsi_conn->phba;
4859 struct iscsi_wrb *pwrb = NULL;
4860 unsigned int doorbell = 0;
4861
4862 pwrb = io_task->pwrb_handle->pwrb;
4863
4864 io_task->cmd_bhs->iscsi_hdr.exp_statsn = 0;
4865 io_task->bhs_len = sizeof(struct be_cmd_bhs);
4866
4867 if (writedir) {
4868 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, type, pwrb,
4869 INI_WR_CMD);
4870 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, dsp, pwrb, 1);
4871 } else {
4872 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, type, pwrb,
4873 INI_RD_CMD);
4874 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, dsp, pwrb, 0);
4875 }
4876
4877 io_task->wrb_type = AMAP_GET_BITS(struct amap_iscsi_wrb_v2,
4878 type, pwrb);
4879
4880 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, lun, pwrb,
4881 cpu_to_be16(*(unsigned short *)
4882 &io_task->cmd_bhs->iscsi_hdr.lun));
4883 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, r2t_exp_dtl, pwrb, xferlen);
4884 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, wrb_idx, pwrb,
4885 io_task->pwrb_handle->wrb_index);
4886 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, cmdsn_itt, pwrb,
4887 be32_to_cpu(task->cmdsn));
4888 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sgl_idx, pwrb,
4889 io_task->psgl_handle->sgl_index);
4890
4891 hwi_write_sgl_v2(pwrb, sg, num_sg, io_task);
4892 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, ptr2nextwrb, pwrb,
4893 io_task->pwrb_handle->nxt_wrb_index);
4894
4895 be_dws_le_to_cpu(pwrb, sizeof(struct iscsi_wrb));
4896
4897 doorbell |= beiscsi_conn->beiscsi_conn_cid & DB_WRB_POST_CID_MASK;
4898 doorbell |= (io_task->pwrb_handle->wrb_index &
4899 DB_DEF_PDU_WRB_INDEX_MASK) <<
4900 DB_DEF_PDU_WRB_INDEX_SHIFT;
4901 doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT;
4902 iowrite32(doorbell, phba->db_va +
4903 beiscsi_conn->doorbell_offset);
4904 return 0;
4905 }
4906
beiscsi_iotask(struct iscsi_task * task,struct scatterlist * sg,unsigned int num_sg,unsigned int xferlen,unsigned int writedir)4907 static int beiscsi_iotask(struct iscsi_task *task, struct scatterlist *sg,
4908 unsigned int num_sg, unsigned int xferlen,
4909 unsigned int writedir)
4910 {
4911
4912 struct beiscsi_io_task *io_task = task->dd_data;
4913 struct iscsi_conn *conn = task->conn;
4914 struct beiscsi_conn *beiscsi_conn = conn->dd_data;
4915 struct beiscsi_hba *phba = beiscsi_conn->phba;
4916 struct iscsi_wrb *pwrb = NULL;
4917 unsigned int doorbell = 0;
4918
4919 pwrb = io_task->pwrb_handle->pwrb;
4920 io_task->cmd_bhs->iscsi_hdr.exp_statsn = 0;
4921 io_task->bhs_len = sizeof(struct be_cmd_bhs);
4922
4923 if (writedir) {
4924 AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,
4925 INI_WR_CMD);
4926 AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 1);
4927 } else {
4928 AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,
4929 INI_RD_CMD);
4930 AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 0);
4931 }
4932
4933 io_task->wrb_type = AMAP_GET_BITS(struct amap_iscsi_wrb,
4934 type, pwrb);
4935
4936 AMAP_SET_BITS(struct amap_iscsi_wrb, lun, pwrb,
4937 cpu_to_be16(*(unsigned short *)
4938 &io_task->cmd_bhs->iscsi_hdr.lun));
4939 AMAP_SET_BITS(struct amap_iscsi_wrb, r2t_exp_dtl, pwrb, xferlen);
4940 AMAP_SET_BITS(struct amap_iscsi_wrb, wrb_idx, pwrb,
4941 io_task->pwrb_handle->wrb_index);
4942 AMAP_SET_BITS(struct amap_iscsi_wrb, cmdsn_itt, pwrb,
4943 be32_to_cpu(task->cmdsn));
4944 AMAP_SET_BITS(struct amap_iscsi_wrb, sgl_icd_idx, pwrb,
4945 io_task->psgl_handle->sgl_index);
4946
4947 hwi_write_sgl(pwrb, sg, num_sg, io_task);
4948
4949 AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb, pwrb,
4950 io_task->pwrb_handle->nxt_wrb_index);
4951 be_dws_le_to_cpu(pwrb, sizeof(struct iscsi_wrb));
4952
4953 doorbell |= beiscsi_conn->beiscsi_conn_cid & DB_WRB_POST_CID_MASK;
4954 doorbell |= (io_task->pwrb_handle->wrb_index &
4955 DB_DEF_PDU_WRB_INDEX_MASK) << DB_DEF_PDU_WRB_INDEX_SHIFT;
4956 doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT;
4957
4958 iowrite32(doorbell, phba->db_va +
4959 beiscsi_conn->doorbell_offset);
4960 return 0;
4961 }
4962
beiscsi_mtask(struct iscsi_task * task)4963 static int beiscsi_mtask(struct iscsi_task *task)
4964 {
4965 struct beiscsi_io_task *io_task = task->dd_data;
4966 struct iscsi_conn *conn = task->conn;
4967 struct beiscsi_conn *beiscsi_conn = conn->dd_data;
4968 struct beiscsi_hba *phba = beiscsi_conn->phba;
4969 struct iscsi_wrb *pwrb = NULL;
4970 unsigned int doorbell = 0;
4971 unsigned int cid;
4972 unsigned int pwrb_typeoffset = 0;
4973
4974 cid = beiscsi_conn->beiscsi_conn_cid;
4975 pwrb = io_task->pwrb_handle->pwrb;
4976 memset(pwrb, 0, sizeof(*pwrb));
4977
4978 if (is_chip_be2_be3r(phba)) {
4979 AMAP_SET_BITS(struct amap_iscsi_wrb, cmdsn_itt, pwrb,
4980 be32_to_cpu(task->cmdsn));
4981 AMAP_SET_BITS(struct amap_iscsi_wrb, wrb_idx, pwrb,
4982 io_task->pwrb_handle->wrb_index);
4983 AMAP_SET_BITS(struct amap_iscsi_wrb, sgl_icd_idx, pwrb,
4984 io_task->psgl_handle->sgl_index);
4985 AMAP_SET_BITS(struct amap_iscsi_wrb, r2t_exp_dtl, pwrb,
4986 task->data_count);
4987 AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb, pwrb,
4988 io_task->pwrb_handle->nxt_wrb_index);
4989 pwrb_typeoffset = BE_WRB_TYPE_OFFSET;
4990 } else {
4991 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, cmdsn_itt, pwrb,
4992 be32_to_cpu(task->cmdsn));
4993 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, wrb_idx, pwrb,
4994 io_task->pwrb_handle->wrb_index);
4995 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sgl_idx, pwrb,
4996 io_task->psgl_handle->sgl_index);
4997 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, r2t_exp_dtl, pwrb,
4998 task->data_count);
4999 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, ptr2nextwrb, pwrb,
5000 io_task->pwrb_handle->nxt_wrb_index);
5001 pwrb_typeoffset = SKH_WRB_TYPE_OFFSET;
5002 }
5003
5004
5005 switch (task->hdr->opcode & ISCSI_OPCODE_MASK) {
5006 case ISCSI_OP_LOGIN:
5007 AMAP_SET_BITS(struct amap_iscsi_wrb, cmdsn_itt, pwrb, 1);
5008 ADAPTER_SET_WRB_TYPE(pwrb, TGT_DM_CMD, pwrb_typeoffset);
5009 hwi_write_buffer(pwrb, task);
5010 break;
5011 case ISCSI_OP_NOOP_OUT:
5012 if (task->hdr->ttt != ISCSI_RESERVED_TAG) {
5013 ADAPTER_SET_WRB_TYPE(pwrb, TGT_DM_CMD, pwrb_typeoffset);
5014 if (is_chip_be2_be3r(phba))
5015 AMAP_SET_BITS(struct amap_iscsi_wrb,
5016 dmsg, pwrb, 1);
5017 else
5018 AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
5019 dmsg, pwrb, 1);
5020 } else {
5021 ADAPTER_SET_WRB_TYPE(pwrb, INI_RD_CMD, pwrb_typeoffset);
5022 if (is_chip_be2_be3r(phba))
5023 AMAP_SET_BITS(struct amap_iscsi_wrb,
5024 dmsg, pwrb, 0);
5025 else
5026 AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
5027 dmsg, pwrb, 0);
5028 }
5029 hwi_write_buffer(pwrb, task);
5030 break;
5031 case ISCSI_OP_TEXT:
5032 ADAPTER_SET_WRB_TYPE(pwrb, TGT_DM_CMD, pwrb_typeoffset);
5033 hwi_write_buffer(pwrb, task);
5034 break;
5035 case ISCSI_OP_SCSI_TMFUNC:
5036 ADAPTER_SET_WRB_TYPE(pwrb, INI_TMF_CMD, pwrb_typeoffset);
5037 hwi_write_buffer(pwrb, task);
5038 break;
5039 case ISCSI_OP_LOGOUT:
5040 ADAPTER_SET_WRB_TYPE(pwrb, HWH_TYPE_LOGOUT, pwrb_typeoffset);
5041 hwi_write_buffer(pwrb, task);
5042 break;
5043
5044 default:
5045 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
5046 "BM_%d : opcode =%d Not supported\n",
5047 task->hdr->opcode & ISCSI_OPCODE_MASK);
5048
5049 return -EINVAL;
5050 }
5051
5052 /* Set the task type */
5053 io_task->wrb_type = (is_chip_be2_be3r(phba)) ?
5054 AMAP_GET_BITS(struct amap_iscsi_wrb, type, pwrb) :
5055 AMAP_GET_BITS(struct amap_iscsi_wrb_v2, type, pwrb);
5056
5057 doorbell |= cid & DB_WRB_POST_CID_MASK;
5058 doorbell |= (io_task->pwrb_handle->wrb_index &
5059 DB_DEF_PDU_WRB_INDEX_MASK) << DB_DEF_PDU_WRB_INDEX_SHIFT;
5060 doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT;
5061 iowrite32(doorbell, phba->db_va +
5062 beiscsi_conn->doorbell_offset);
5063 return 0;
5064 }
5065
beiscsi_task_xmit(struct iscsi_task * task)5066 static int beiscsi_task_xmit(struct iscsi_task *task)
5067 {
5068 struct beiscsi_io_task *io_task = task->dd_data;
5069 struct scsi_cmnd *sc = task->sc;
5070 struct beiscsi_hba *phba = NULL;
5071 struct scatterlist *sg;
5072 int num_sg;
5073 unsigned int writedir = 0, xferlen = 0;
5074
5075 phba = ((struct beiscsi_conn *)task->conn->dd_data)->phba;
5076
5077 if (!sc)
5078 return beiscsi_mtask(task);
5079
5080 io_task->scsi_cmnd = sc;
5081 num_sg = scsi_dma_map(sc);
5082 if (num_sg < 0) {
5083 struct iscsi_conn *conn = task->conn;
5084 struct beiscsi_hba *phba = NULL;
5085
5086 phba = ((struct beiscsi_conn *)conn->dd_data)->phba;
5087 beiscsi_log(phba, KERN_ERR,
5088 BEISCSI_LOG_IO | BEISCSI_LOG_ISCSI,
5089 "BM_%d : scsi_dma_map Failed "
5090 "Driver_ITT : 0x%x ITT : 0x%x Xferlen : 0x%x\n",
5091 be32_to_cpu(io_task->cmd_bhs->iscsi_hdr.itt),
5092 io_task->libiscsi_itt, scsi_bufflen(sc));
5093
5094 return num_sg;
5095 }
5096 xferlen = scsi_bufflen(sc);
5097 sg = scsi_sglist(sc);
5098 if (sc->sc_data_direction == DMA_TO_DEVICE)
5099 writedir = 1;
5100 else
5101 writedir = 0;
5102
5103 return phba->iotask_fn(task, sg, num_sg, xferlen, writedir);
5104 }
5105
5106 /**
5107 * beiscsi_bsg_request - handle bsg request from ISCSI transport
5108 * @job: job to handle
5109 */
beiscsi_bsg_request(struct bsg_job * job)5110 static int beiscsi_bsg_request(struct bsg_job *job)
5111 {
5112 struct Scsi_Host *shost;
5113 struct beiscsi_hba *phba;
5114 struct iscsi_bsg_request *bsg_req = job->request;
5115 int rc = -EINVAL;
5116 unsigned int tag;
5117 struct be_dma_mem nonemb_cmd;
5118 struct be_cmd_resp_hdr *resp;
5119 struct iscsi_bsg_reply *bsg_reply = job->reply;
5120 unsigned short status, extd_status;
5121
5122 shost = iscsi_job_to_shost(job);
5123 phba = iscsi_host_priv(shost);
5124
5125 switch (bsg_req->msgcode) {
5126 case ISCSI_BSG_HST_VENDOR:
5127 nonemb_cmd.va = pci_alloc_consistent(phba->ctrl.pdev,
5128 job->request_payload.payload_len,
5129 &nonemb_cmd.dma);
5130 if (nonemb_cmd.va == NULL) {
5131 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
5132 "BM_%d : Failed to allocate memory for "
5133 "beiscsi_bsg_request\n");
5134 return -ENOMEM;
5135 }
5136 tag = mgmt_vendor_specific_fw_cmd(&phba->ctrl, phba, job,
5137 &nonemb_cmd);
5138 if (!tag) {
5139 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
5140 "BM_%d : MBX Tag Allocation Failed\n");
5141
5142 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
5143 nonemb_cmd.va, nonemb_cmd.dma);
5144 return -EAGAIN;
5145 }
5146
5147 rc = wait_event_interruptible_timeout(
5148 phba->ctrl.mcc_wait[tag],
5149 phba->ctrl.mcc_numtag[tag],
5150 msecs_to_jiffies(
5151 BEISCSI_HOST_MBX_TIMEOUT));
5152 extd_status = (phba->ctrl.mcc_numtag[tag] & 0x0000FF00) >> 8;
5153 status = phba->ctrl.mcc_numtag[tag] & 0x000000FF;
5154 free_mcc_tag(&phba->ctrl, tag);
5155 resp = (struct be_cmd_resp_hdr *)nonemb_cmd.va;
5156 sg_copy_from_buffer(job->reply_payload.sg_list,
5157 job->reply_payload.sg_cnt,
5158 nonemb_cmd.va, (resp->response_length
5159 + sizeof(*resp)));
5160 bsg_reply->reply_payload_rcv_len = resp->response_length;
5161 bsg_reply->result = status;
5162 bsg_job_done(job, bsg_reply->result,
5163 bsg_reply->reply_payload_rcv_len);
5164 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
5165 nonemb_cmd.va, nonemb_cmd.dma);
5166 if (status || extd_status) {
5167 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
5168 "BM_%d : MBX Cmd Failed"
5169 " status = %d extd_status = %d\n",
5170 status, extd_status);
5171
5172 return -EIO;
5173 } else {
5174 rc = 0;
5175 }
5176 break;
5177
5178 default:
5179 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
5180 "BM_%d : Unsupported bsg command: 0x%x\n",
5181 bsg_req->msgcode);
5182 break;
5183 }
5184
5185 return rc;
5186 }
5187
beiscsi_hba_attrs_init(struct beiscsi_hba * phba)5188 void beiscsi_hba_attrs_init(struct beiscsi_hba *phba)
5189 {
5190 /* Set the logging parameter */
5191 beiscsi_log_enable_init(phba, beiscsi_log_enable);
5192 }
5193
5194 /*
5195 * beiscsi_quiesce()- Cleanup Driver resources
5196 * @phba: Instance Priv structure
5197 * @unload_state:i Clean or EEH unload state
5198 *
5199 * Free the OS and HW resources held by the driver
5200 **/
beiscsi_quiesce(struct beiscsi_hba * phba,uint32_t unload_state)5201 static void beiscsi_quiesce(struct beiscsi_hba *phba,
5202 uint32_t unload_state)
5203 {
5204 struct hwi_controller *phwi_ctrlr;
5205 struct hwi_context_memory *phwi_context;
5206 struct be_eq_obj *pbe_eq;
5207 unsigned int i, msix_vec;
5208
5209 phwi_ctrlr = phba->phwi_ctrlr;
5210 phwi_context = phwi_ctrlr->phwi_ctxt;
5211 hwi_disable_intr(phba);
5212 if (phba->msix_enabled) {
5213 for (i = 0; i <= phba->num_cpus; i++) {
5214 msix_vec = phba->msix_entries[i].vector;
5215 synchronize_irq(msix_vec);
5216 free_irq(msix_vec, &phwi_context->be_eq[i]);
5217 kfree(phba->msi_name[i]);
5218 }
5219 } else
5220 if (phba->pcidev->irq) {
5221 synchronize_irq(phba->pcidev->irq);
5222 free_irq(phba->pcidev->irq, phba);
5223 }
5224 pci_disable_msix(phba->pcidev);
5225 cancel_delayed_work_sync(&phba->beiscsi_hw_check_task);
5226
5227 for (i = 0; i < phba->num_cpus; i++) {
5228 pbe_eq = &phwi_context->be_eq[i];
5229 blk_iopoll_disable(&pbe_eq->iopoll);
5230 }
5231
5232 if (unload_state == BEISCSI_CLEAN_UNLOAD) {
5233 destroy_workqueue(phba->wq);
5234 beiscsi_clean_port(phba);
5235 beiscsi_free_mem(phba);
5236
5237 beiscsi_unmap_pci_function(phba);
5238 pci_free_consistent(phba->pcidev,
5239 phba->ctrl.mbox_mem_alloced.size,
5240 phba->ctrl.mbox_mem_alloced.va,
5241 phba->ctrl.mbox_mem_alloced.dma);
5242 } else {
5243 hwi_purge_eq(phba);
5244 hwi_cleanup(phba);
5245 }
5246
5247 }
5248
beiscsi_remove(struct pci_dev * pcidev)5249 static void beiscsi_remove(struct pci_dev *pcidev)
5250 {
5251
5252 struct beiscsi_hba *phba = NULL;
5253
5254 phba = pci_get_drvdata(pcidev);
5255 if (!phba) {
5256 dev_err(&pcidev->dev, "beiscsi_remove called with no phba\n");
5257 return;
5258 }
5259
5260 beiscsi_destroy_def_ifaces(phba);
5261 beiscsi_quiesce(phba, BEISCSI_CLEAN_UNLOAD);
5262 iscsi_boot_destroy_kset(phba->boot_kset);
5263 iscsi_host_remove(phba->shost);
5264 pci_dev_put(phba->pcidev);
5265 iscsi_host_free(phba->shost);
5266 pci_disable_pcie_error_reporting(pcidev);
5267 pci_set_drvdata(pcidev, NULL);
5268 pci_disable_device(pcidev);
5269 }
5270
beiscsi_shutdown(struct pci_dev * pcidev)5271 static void beiscsi_shutdown(struct pci_dev *pcidev)
5272 {
5273
5274 struct beiscsi_hba *phba = NULL;
5275
5276 phba = (struct beiscsi_hba *)pci_get_drvdata(pcidev);
5277 if (!phba) {
5278 dev_err(&pcidev->dev, "beiscsi_shutdown called with no phba\n");
5279 return;
5280 }
5281
5282 phba->state = BE_ADAPTER_STATE_SHUTDOWN;
5283 iscsi_host_for_each_session(phba->shost, be2iscsi_fail_session);
5284 beiscsi_quiesce(phba, BEISCSI_CLEAN_UNLOAD);
5285 pci_disable_device(pcidev);
5286 }
5287
beiscsi_msix_enable(struct beiscsi_hba * phba)5288 static void beiscsi_msix_enable(struct beiscsi_hba *phba)
5289 {
5290 int i, status;
5291
5292 for (i = 0; i <= phba->num_cpus; i++)
5293 phba->msix_entries[i].entry = i;
5294
5295 status = pci_enable_msix_range(phba->pcidev, phba->msix_entries,
5296 phba->num_cpus + 1, phba->num_cpus + 1);
5297 if (status > 0)
5298 phba->msix_enabled = true;
5299
5300 return;
5301 }
5302
be_eqd_update(struct beiscsi_hba * phba)5303 static void be_eqd_update(struct beiscsi_hba *phba)
5304 {
5305 struct be_set_eqd set_eqd[MAX_CPUS];
5306 struct be_aic_obj *aic;
5307 struct be_eq_obj *pbe_eq;
5308 struct hwi_controller *phwi_ctrlr;
5309 struct hwi_context_memory *phwi_context;
5310 int eqd, i, num = 0;
5311 ulong now;
5312 u32 pps, delta;
5313 unsigned int tag;
5314
5315 phwi_ctrlr = phba->phwi_ctrlr;
5316 phwi_context = phwi_ctrlr->phwi_ctxt;
5317
5318 for (i = 0; i <= phba->num_cpus; i++) {
5319 aic = &phba->aic_obj[i];
5320 pbe_eq = &phwi_context->be_eq[i];
5321 now = jiffies;
5322 if (!aic->jiffs || time_before(now, aic->jiffs) ||
5323 pbe_eq->cq_count < aic->eq_prev) {
5324 aic->jiffs = now;
5325 aic->eq_prev = pbe_eq->cq_count;
5326 continue;
5327 }
5328 delta = jiffies_to_msecs(now - aic->jiffs);
5329 pps = (((u32)(pbe_eq->cq_count - aic->eq_prev) * 1000) / delta);
5330 eqd = (pps / 1500) << 2;
5331
5332 if (eqd < 8)
5333 eqd = 0;
5334 eqd = min_t(u32, eqd, phwi_context->max_eqd);
5335 eqd = max_t(u32, eqd, phwi_context->min_eqd);
5336
5337 aic->jiffs = now;
5338 aic->eq_prev = pbe_eq->cq_count;
5339
5340 if (eqd != aic->prev_eqd) {
5341 set_eqd[num].delay_multiplier = (eqd * 65)/100;
5342 set_eqd[num].eq_id = pbe_eq->q.id;
5343 aic->prev_eqd = eqd;
5344 num++;
5345 }
5346 }
5347 if (num) {
5348 tag = be_cmd_modify_eq_delay(phba, set_eqd, num);
5349 if (tag)
5350 beiscsi_mccq_compl(phba, tag, NULL, NULL);
5351 }
5352 }
5353
be_check_boot_session(struct beiscsi_hba * phba)5354 static void be_check_boot_session(struct beiscsi_hba *phba)
5355 {
5356 if (beiscsi_setup_boot_info(phba))
5357 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5358 "BM_%d : Could not set up "
5359 "iSCSI boot info on async event.\n");
5360 }
5361
5362 /*
5363 * beiscsi_hw_health_check()- Check adapter health
5364 * @work: work item to check HW health
5365 *
5366 * Check if adapter in an unrecoverable state or not.
5367 **/
5368 static void
beiscsi_hw_health_check(struct work_struct * work)5369 beiscsi_hw_health_check(struct work_struct *work)
5370 {
5371 struct beiscsi_hba *phba =
5372 container_of(work, struct beiscsi_hba,
5373 beiscsi_hw_check_task.work);
5374
5375 be_eqd_update(phba);
5376
5377 if (phba->state & BE_ADAPTER_CHECK_BOOT) {
5378 phba->state &= ~BE_ADAPTER_CHECK_BOOT;
5379 be_check_boot_session(phba);
5380 }
5381
5382 beiscsi_ue_detect(phba);
5383
5384 schedule_delayed_work(&phba->beiscsi_hw_check_task,
5385 msecs_to_jiffies(1000));
5386 }
5387
5388
beiscsi_eeh_err_detected(struct pci_dev * pdev,pci_channel_state_t state)5389 static pci_ers_result_t beiscsi_eeh_err_detected(struct pci_dev *pdev,
5390 pci_channel_state_t state)
5391 {
5392 struct beiscsi_hba *phba = NULL;
5393
5394 phba = (struct beiscsi_hba *)pci_get_drvdata(pdev);
5395 phba->state |= BE_ADAPTER_PCI_ERR;
5396
5397 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5398 "BM_%d : EEH error detected\n");
5399
5400 beiscsi_quiesce(phba, BEISCSI_EEH_UNLOAD);
5401
5402 if (state == pci_channel_io_perm_failure) {
5403 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5404 "BM_%d : EEH : State PERM Failure");
5405 return PCI_ERS_RESULT_DISCONNECT;
5406 }
5407
5408 pci_disable_device(pdev);
5409
5410 /* The error could cause the FW to trigger a flash debug dump.
5411 * Resetting the card while flash dump is in progress
5412 * can cause it not to recover; wait for it to finish.
5413 * Wait only for first function as it is needed only once per
5414 * adapter.
5415 **/
5416 if (pdev->devfn == 0)
5417 ssleep(30);
5418
5419 return PCI_ERS_RESULT_NEED_RESET;
5420 }
5421
beiscsi_eeh_reset(struct pci_dev * pdev)5422 static pci_ers_result_t beiscsi_eeh_reset(struct pci_dev *pdev)
5423 {
5424 struct beiscsi_hba *phba = NULL;
5425 int status = 0;
5426
5427 phba = (struct beiscsi_hba *)pci_get_drvdata(pdev);
5428
5429 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5430 "BM_%d : EEH Reset\n");
5431
5432 status = pci_enable_device(pdev);
5433 if (status)
5434 return PCI_ERS_RESULT_DISCONNECT;
5435
5436 pci_set_master(pdev);
5437 pci_set_power_state(pdev, PCI_D0);
5438 pci_restore_state(pdev);
5439
5440 /* Wait for the CHIP Reset to complete */
5441 status = be_chk_reset_complete(phba);
5442 if (!status) {
5443 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_INIT,
5444 "BM_%d : EEH Reset Completed\n");
5445 } else {
5446 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_INIT,
5447 "BM_%d : EEH Reset Completion Failure\n");
5448 return PCI_ERS_RESULT_DISCONNECT;
5449 }
5450
5451 pci_cleanup_aer_uncorrect_error_status(pdev);
5452 return PCI_ERS_RESULT_RECOVERED;
5453 }
5454
beiscsi_eeh_resume(struct pci_dev * pdev)5455 static void beiscsi_eeh_resume(struct pci_dev *pdev)
5456 {
5457 int ret = 0, i;
5458 struct be_eq_obj *pbe_eq;
5459 struct beiscsi_hba *phba = NULL;
5460 struct hwi_controller *phwi_ctrlr;
5461 struct hwi_context_memory *phwi_context;
5462
5463 phba = (struct beiscsi_hba *)pci_get_drvdata(pdev);
5464 pci_save_state(pdev);
5465
5466 if (enable_msix)
5467 find_num_cpus(phba);
5468 else
5469 phba->num_cpus = 1;
5470
5471 if (enable_msix) {
5472 beiscsi_msix_enable(phba);
5473 if (!phba->msix_enabled)
5474 phba->num_cpus = 1;
5475 }
5476
5477 ret = beiscsi_cmd_reset_function(phba);
5478 if (ret) {
5479 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5480 "BM_%d : Reset Failed\n");
5481 goto ret_err;
5482 }
5483
5484 ret = be_chk_reset_complete(phba);
5485 if (ret) {
5486 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5487 "BM_%d : Failed to get out of reset.\n");
5488 goto ret_err;
5489 }
5490
5491 beiscsi_get_params(phba);
5492 phba->shost->max_id = phba->params.cxns_per_ctrl;
5493 phba->shost->can_queue = phba->params.ios_per_ctrl;
5494 ret = hwi_init_controller(phba);
5495
5496 for (i = 0; i < MAX_MCC_CMD; i++) {
5497 init_waitqueue_head(&phba->ctrl.mcc_wait[i + 1]);
5498 phba->ctrl.mcc_tag[i] = i + 1;
5499 phba->ctrl.mcc_numtag[i + 1] = 0;
5500 phba->ctrl.mcc_tag_available++;
5501 }
5502
5503 phwi_ctrlr = phba->phwi_ctrlr;
5504 phwi_context = phwi_ctrlr->phwi_ctxt;
5505
5506 for (i = 0; i < phba->num_cpus; i++) {
5507 pbe_eq = &phwi_context->be_eq[i];
5508 blk_iopoll_init(&pbe_eq->iopoll, be_iopoll_budget,
5509 be_iopoll);
5510 blk_iopoll_enable(&pbe_eq->iopoll);
5511 }
5512
5513 i = (phba->msix_enabled) ? i : 0;
5514 /* Work item for MCC handling */
5515 pbe_eq = &phwi_context->be_eq[i];
5516 INIT_WORK(&pbe_eq->work_cqs, beiscsi_process_all_cqs);
5517
5518 ret = beiscsi_init_irqs(phba);
5519 if (ret < 0) {
5520 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5521 "BM_%d : beiscsi_eeh_resume - "
5522 "Failed to beiscsi_init_irqs\n");
5523 goto ret_err;
5524 }
5525
5526 hwi_enable_intr(phba);
5527 phba->state &= ~BE_ADAPTER_PCI_ERR;
5528
5529 return;
5530 ret_err:
5531 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5532 "BM_%d : AER EEH Resume Failed\n");
5533 }
5534
beiscsi_dev_probe(struct pci_dev * pcidev,const struct pci_device_id * id)5535 static int beiscsi_dev_probe(struct pci_dev *pcidev,
5536 const struct pci_device_id *id)
5537 {
5538 struct beiscsi_hba *phba = NULL;
5539 struct hwi_controller *phwi_ctrlr;
5540 struct hwi_context_memory *phwi_context;
5541 struct be_eq_obj *pbe_eq;
5542 int ret = 0, i;
5543
5544 ret = beiscsi_enable_pci(pcidev);
5545 if (ret < 0) {
5546 dev_err(&pcidev->dev,
5547 "beiscsi_dev_probe - Failed to enable pci device\n");
5548 return ret;
5549 }
5550
5551 phba = beiscsi_hba_alloc(pcidev);
5552 if (!phba) {
5553 dev_err(&pcidev->dev,
5554 "beiscsi_dev_probe - Failed in beiscsi_hba_alloc\n");
5555 goto disable_pci;
5556 }
5557
5558 /* Enable EEH reporting */
5559 ret = pci_enable_pcie_error_reporting(pcidev);
5560 if (ret)
5561 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_INIT,
5562 "BM_%d : PCIe Error Reporting "
5563 "Enabling Failed\n");
5564
5565 pci_save_state(pcidev);
5566
5567 /* Initialize Driver configuration Paramters */
5568 beiscsi_hba_attrs_init(phba);
5569
5570 phba->fw_timeout = false;
5571 phba->mac_addr_set = false;
5572
5573
5574 switch (pcidev->device) {
5575 case BE_DEVICE_ID1:
5576 case OC_DEVICE_ID1:
5577 case OC_DEVICE_ID2:
5578 phba->generation = BE_GEN2;
5579 phba->iotask_fn = beiscsi_iotask;
5580 break;
5581 case BE_DEVICE_ID2:
5582 case OC_DEVICE_ID3:
5583 phba->generation = BE_GEN3;
5584 phba->iotask_fn = beiscsi_iotask;
5585 break;
5586 case OC_SKH_ID1:
5587 phba->generation = BE_GEN4;
5588 phba->iotask_fn = beiscsi_iotask_v2;
5589 break;
5590 default:
5591 phba->generation = 0;
5592 }
5593
5594 ret = be_ctrl_init(phba, pcidev);
5595 if (ret) {
5596 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5597 "BM_%d : beiscsi_dev_probe-"
5598 "Failed in be_ctrl_init\n");
5599 goto hba_free;
5600 }
5601
5602 ret = beiscsi_cmd_reset_function(phba);
5603 if (ret) {
5604 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5605 "BM_%d : Reset Failed\n");
5606 goto hba_free;
5607 }
5608 ret = be_chk_reset_complete(phba);
5609 if (ret) {
5610 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5611 "BM_%d : Failed to get out of reset.\n");
5612 goto hba_free;
5613 }
5614
5615 spin_lock_init(&phba->io_sgl_lock);
5616 spin_lock_init(&phba->mgmt_sgl_lock);
5617 spin_lock_init(&phba->isr_lock);
5618 spin_lock_init(&phba->async_pdu_lock);
5619 ret = mgmt_get_fw_config(&phba->ctrl, phba);
5620 if (ret != 0) {
5621 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5622 "BM_%d : Error getting fw config\n");
5623 goto free_port;
5624 }
5625
5626 if (enable_msix)
5627 find_num_cpus(phba);
5628 else
5629 phba->num_cpus = 1;
5630
5631 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
5632 "BM_%d : num_cpus = %d\n",
5633 phba->num_cpus);
5634
5635 if (enable_msix) {
5636 beiscsi_msix_enable(phba);
5637 if (!phba->msix_enabled)
5638 phba->num_cpus = 1;
5639 }
5640
5641 phba->shost->max_id = phba->params.cxns_per_ctrl;
5642 beiscsi_get_params(phba);
5643 phba->shost->can_queue = phba->params.ios_per_ctrl;
5644 ret = beiscsi_init_port(phba);
5645 if (ret < 0) {
5646 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5647 "BM_%d : beiscsi_dev_probe-"
5648 "Failed in beiscsi_init_port\n");
5649 goto free_port;
5650 }
5651
5652 for (i = 0; i < MAX_MCC_CMD; i++) {
5653 init_waitqueue_head(&phba->ctrl.mcc_wait[i + 1]);
5654 phba->ctrl.mcc_tag[i] = i + 1;
5655 phba->ctrl.mcc_numtag[i + 1] = 0;
5656 phba->ctrl.mcc_tag_available++;
5657 memset(&phba->ctrl.ptag_state[i].tag_mem_state, 0,
5658 sizeof(struct be_dma_mem));
5659 }
5660
5661 phba->ctrl.mcc_alloc_index = phba->ctrl.mcc_free_index = 0;
5662
5663 snprintf(phba->wq_name, sizeof(phba->wq_name), "beiscsi_%02x_wq",
5664 phba->shost->host_no);
5665 phba->wq = alloc_workqueue("%s", WQ_MEM_RECLAIM, 1, phba->wq_name);
5666 if (!phba->wq) {
5667 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5668 "BM_%d : beiscsi_dev_probe-"
5669 "Failed to allocate work queue\n");
5670 goto free_twq;
5671 }
5672
5673 INIT_DELAYED_WORK(&phba->beiscsi_hw_check_task,
5674 beiscsi_hw_health_check);
5675
5676 phwi_ctrlr = phba->phwi_ctrlr;
5677 phwi_context = phwi_ctrlr->phwi_ctxt;
5678
5679 for (i = 0; i < phba->num_cpus; i++) {
5680 pbe_eq = &phwi_context->be_eq[i];
5681 blk_iopoll_init(&pbe_eq->iopoll, be_iopoll_budget,
5682 be_iopoll);
5683 blk_iopoll_enable(&pbe_eq->iopoll);
5684 }
5685
5686 i = (phba->msix_enabled) ? i : 0;
5687 /* Work item for MCC handling */
5688 pbe_eq = &phwi_context->be_eq[i];
5689 INIT_WORK(&pbe_eq->work_cqs, beiscsi_process_all_cqs);
5690
5691 ret = beiscsi_init_irqs(phba);
5692 if (ret < 0) {
5693 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5694 "BM_%d : beiscsi_dev_probe-"
5695 "Failed to beiscsi_init_irqs\n");
5696 goto free_blkenbld;
5697 }
5698 hwi_enable_intr(phba);
5699
5700 if (iscsi_host_add(phba->shost, &phba->pcidev->dev))
5701 goto free_blkenbld;
5702
5703 if (beiscsi_setup_boot_info(phba))
5704 /*
5705 * log error but continue, because we may not be using
5706 * iscsi boot.
5707 */
5708 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5709 "BM_%d : Could not set up "
5710 "iSCSI boot info.\n");
5711
5712 beiscsi_create_def_ifaces(phba);
5713 schedule_delayed_work(&phba->beiscsi_hw_check_task,
5714 msecs_to_jiffies(1000));
5715
5716 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
5717 "\n\n\n BM_%d : SUCCESS - DRIVER LOADED\n\n\n");
5718 return 0;
5719
5720 free_blkenbld:
5721 destroy_workqueue(phba->wq);
5722 for (i = 0; i < phba->num_cpus; i++) {
5723 pbe_eq = &phwi_context->be_eq[i];
5724 blk_iopoll_disable(&pbe_eq->iopoll);
5725 }
5726 free_twq:
5727 beiscsi_clean_port(phba);
5728 beiscsi_free_mem(phba);
5729 free_port:
5730 pci_free_consistent(phba->pcidev,
5731 phba->ctrl.mbox_mem_alloced.size,
5732 phba->ctrl.mbox_mem_alloced.va,
5733 phba->ctrl.mbox_mem_alloced.dma);
5734 beiscsi_unmap_pci_function(phba);
5735 hba_free:
5736 if (phba->msix_enabled)
5737 pci_disable_msix(phba->pcidev);
5738 pci_dev_put(phba->pcidev);
5739 iscsi_host_free(phba->shost);
5740 pci_set_drvdata(pcidev, NULL);
5741 disable_pci:
5742 pci_disable_device(pcidev);
5743 return ret;
5744 }
5745
5746 static struct pci_error_handlers beiscsi_eeh_handlers = {
5747 .error_detected = beiscsi_eeh_err_detected,
5748 .slot_reset = beiscsi_eeh_reset,
5749 .resume = beiscsi_eeh_resume,
5750 };
5751
5752 struct iscsi_transport beiscsi_iscsi_transport = {
5753 .owner = THIS_MODULE,
5754 .name = DRV_NAME,
5755 .caps = CAP_RECOVERY_L0 | CAP_HDRDGST | CAP_TEXT_NEGO |
5756 CAP_MULTI_R2T | CAP_DATADGST | CAP_DATA_PATH_OFFLOAD,
5757 .create_session = beiscsi_session_create,
5758 .destroy_session = beiscsi_session_destroy,
5759 .create_conn = beiscsi_conn_create,
5760 .bind_conn = beiscsi_conn_bind,
5761 .destroy_conn = iscsi_conn_teardown,
5762 .attr_is_visible = be2iscsi_attr_is_visible,
5763 .set_iface_param = be2iscsi_iface_set_param,
5764 .get_iface_param = be2iscsi_iface_get_param,
5765 .set_param = beiscsi_set_param,
5766 .get_conn_param = iscsi_conn_get_param,
5767 .get_session_param = iscsi_session_get_param,
5768 .get_host_param = beiscsi_get_host_param,
5769 .start_conn = beiscsi_conn_start,
5770 .stop_conn = iscsi_conn_stop,
5771 .send_pdu = iscsi_conn_send_pdu,
5772 .xmit_task = beiscsi_task_xmit,
5773 .cleanup_task = beiscsi_cleanup_task,
5774 .alloc_pdu = beiscsi_alloc_pdu,
5775 .parse_pdu_itt = beiscsi_parse_pdu,
5776 .get_stats = beiscsi_conn_get_stats,
5777 .get_ep_param = beiscsi_ep_get_param,
5778 .ep_connect = beiscsi_ep_connect,
5779 .ep_poll = beiscsi_ep_poll,
5780 .ep_disconnect = beiscsi_ep_disconnect,
5781 .session_recovery_timedout = iscsi_session_recovery_timedout,
5782 .bsg_request = beiscsi_bsg_request,
5783 };
5784
5785 static struct pci_driver beiscsi_pci_driver = {
5786 .name = DRV_NAME,
5787 .probe = beiscsi_dev_probe,
5788 .remove = beiscsi_remove,
5789 .shutdown = beiscsi_shutdown,
5790 .id_table = beiscsi_pci_id_table,
5791 .err_handler = &beiscsi_eeh_handlers
5792 };
5793
5794
beiscsi_module_init(void)5795 static int __init beiscsi_module_init(void)
5796 {
5797 int ret;
5798
5799 beiscsi_scsi_transport =
5800 iscsi_register_transport(&beiscsi_iscsi_transport);
5801 if (!beiscsi_scsi_transport) {
5802 printk(KERN_ERR
5803 "beiscsi_module_init - Unable to register beiscsi transport.\n");
5804 return -ENOMEM;
5805 }
5806 printk(KERN_INFO "In beiscsi_module_init, tt=%p\n",
5807 &beiscsi_iscsi_transport);
5808
5809 ret = pci_register_driver(&beiscsi_pci_driver);
5810 if (ret) {
5811 printk(KERN_ERR
5812 "beiscsi_module_init - Unable to register beiscsi pci driver.\n");
5813 goto unregister_iscsi_transport;
5814 }
5815 return 0;
5816
5817 unregister_iscsi_transport:
5818 iscsi_unregister_transport(&beiscsi_iscsi_transport);
5819 return ret;
5820 }
5821
beiscsi_module_exit(void)5822 static void __exit beiscsi_module_exit(void)
5823 {
5824 pci_unregister_driver(&beiscsi_pci_driver);
5825 iscsi_unregister_transport(&beiscsi_iscsi_transport);
5826 }
5827
5828 module_init(beiscsi_module_init);
5829 module_exit(beiscsi_module_exit);
5830