drivers/scsi/be2iscsi/be

/* [<][>][^][v][top][bottom][index][help] */
   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright 2017 Broadcom. All Rights Reserved.
   4  * The term "Broadcom" refers to Broadcom Limited and/or its subsidiaries.
   5  *
   6  * Contact Information:
   7  * linux-drivers@broadcom.com
   8  */
   9 
  10 #ifndef _BEISCSI_MAIN_
  11 #define _BEISCSI_MAIN_
  12 
  13 #include <linux/kernel.h>
  14 #include <linux/pci.h>
  15 #include <linux/if_ether.h>
  16 #include <linux/in.h>
  17 #include <linux/ctype.h>
  18 #include <linux/module.h>
  19 #include <linux/aer.h>
  20 #include <scsi/scsi.h>
  21 #include <scsi/scsi_cmnd.h>
  22 #include <scsi/scsi_device.h>
  23 #include <scsi/scsi_host.h>
  24 #include <scsi/iscsi_proto.h>
  25 #include <scsi/libiscsi.h>
  26 #include <scsi/scsi_transport_iscsi.h>
  27 
  28 #define DRV_NAME                "be2iscsi"
  29 #define BUILD_STR               "11.4.0.1"
  30 #define BE_NAME                 "Emulex OneConnect" \
  31                                 "Open-iSCSI Driver version" BUILD_STR
  32 #define DRV_DESC                BE_NAME " " "Driver"
  33 
  34 #define BE_VENDOR_ID            0x19A2
  35 #define ELX_VENDOR_ID           0x10DF
  36 /* DEVICE ID's for BE2 */
  37 #define BE_DEVICE_ID1           0x212
  38 #define OC_DEVICE_ID1           0x702
  39 #define OC_DEVICE_ID2           0x703
  40 
  41 /* DEVICE ID's for BE3 */
  42 #define BE_DEVICE_ID2           0x222
  43 #define OC_DEVICE_ID3           0x712
  44 
  45 /* DEVICE ID for SKH */
  46 #define OC_SKH_ID1              0x722
  47 
  48 #define BE2_IO_DEPTH            1024
  49 #define BE2_MAX_SESSIONS        256
  50 #define BE2_TMFS                16
  51 #define BE2_NOPOUT_REQ          16
  52 #define BE2_SGE                 32
  53 #define BE2_DEFPDU_HDR_SZ       64
  54 #define BE2_DEFPDU_DATA_SZ      8192
  55 #define BE2_MAX_NUM_CQ_PROC     512
  56 
  57 #define MAX_CPUS                64U
  58 #define BEISCSI_MAX_NUM_CPUS    7
  59 
  60 #define BEISCSI_VER_STRLEN 32
  61 
  62 #define BEISCSI_SGLIST_ELEMENTS 30
  63 
  64 /**
  65  * BE_INVLDT_CMD_TBL_SZ is 128 which is total number commands that can
  66  * be invalidated at a time, consider it before changing the value of
  67  * BEISCSI_CMD_PER_LUN.
  68  */
  69 #define BEISCSI_CMD_PER_LUN     128     /* scsi_host->cmd_per_lun */
  70 #define BEISCSI_MAX_SECTORS     1024    /* scsi_host->max_sectors */
  71 #define BEISCSI_TEMPLATE_HDR_PER_CXN_SIZE 128 /* Template size per cxn */
  72 
  73 #define BEISCSI_MAX_CMD_LEN     16      /* scsi_host->max_cmd_len */
  74 #define BEISCSI_NUM_MAX_LUN     256     /* scsi_host->max_lun */
  75 #define BEISCSI_MAX_FRAGS_INIT  192
  76 
  77 #define BE_SENSE_INFO_SIZE              258
  78 #define BE_ISCSI_PDU_HEADER_SIZE        64
  79 #define BE_MIN_MEM_SIZE                 16384
  80 #define MAX_CMD_SZ                      65536
  81 #define IIOC_SCSI_DATA                  0x05    /* Write Operation */
  82 
  83 /**
  84  * hardware needs the async PDU buffers to be posted in multiples of 8
  85  * So have atleast 8 of them by default
  86  */
  87 
  88 #define HWI_GET_ASYNC_PDU_CTX(phwi, ulp_num)    \
  89         (phwi->phwi_ctxt->pasync_ctx[ulp_num])
  90 
  91 /********* Memory BAR register ************/
  92 #define PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET      0xfc
  93 /**
  94  * Host Interrupt Enable, if set interrupts are enabled although "PCI Interrupt
  95  * Disable" may still globally block interrupts in addition to individual
  96  * interrupt masks; a mechanism for the device driver to block all interrupts
  97  * atomically without having to arbitrate for the PCI Interrupt Disable bit
  98  * with the OS.
  99  */
 100 #define MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK      (1 << 29)       /* bit 29 */
 101 
 102 /********* ISR0 Register offset **********/
 103 #define CEV_ISR0_OFFSET                         0xC18
 104 #define CEV_ISR_SIZE                            4
 105 
 106 /**
 107  * Macros for reading/writing a protection domain or CSR registers
 108  * in BladeEngine.
 109  */
 110 
 111 #define DB_TXULP0_OFFSET 0x40
 112 #define DB_RXULP0_OFFSET 0xA0
 113 /********* Event Q door bell *************/
 114 #define DB_EQ_OFFSET                    DB_CQ_OFFSET
 115 #define DB_EQ_RING_ID_LOW_MASK          0x1FF   /* bits 0 - 8 */
 116 /* Clear the interrupt for this eq */
 117 #define DB_EQ_CLR_SHIFT                 (9)     /* bit 9 */
 118 /* Must be 1 */
 119 #define DB_EQ_EVNT_SHIFT                (10)    /* bit 10 */
 120 /* Higher Order EQ_ID bit */
 121 #define DB_EQ_RING_ID_HIGH_MASK 0x1F /* bits 11 - 15 */
 122 #define DB_EQ_HIGH_SET_SHIFT    11
 123 #define DB_EQ_HIGH_FEILD_SHIFT  9
 124 /* Number of event entries processed */
 125 #define DB_EQ_NUM_POPPED_SHIFT          (16)    /* bits 16 - 28 */
 126 /* Rearm bit */
 127 #define DB_EQ_REARM_SHIFT               (29)    /* bit 29 */
 128 
 129 /********* Compl Q door bell *************/
 130 #define DB_CQ_OFFSET                    0x120
 131 #define DB_CQ_RING_ID_LOW_MASK          0x3FF   /* bits 0 - 9 */
 132 /* Higher Order CQ_ID bit */
 133 #define DB_CQ_RING_ID_HIGH_MASK 0x1F /* bits 11 - 15 */
 134 #define DB_CQ_HIGH_SET_SHIFT    11
 135 #define DB_CQ_HIGH_FEILD_SHIFT  10
 136 
 137 /* Number of event entries processed */
 138 #define DB_CQ_NUM_POPPED_SHIFT          (16)    /* bits 16 - 28 */
 139 /* Rearm bit */
 140 #define DB_CQ_REARM_SHIFT               (29)    /* bit 29 */
 141 
 142 #define GET_HWI_CONTROLLER_WS(pc)       (pc->phwi_ctrlr)
 143 #define HWI_GET_DEF_BUFQ_ID(pc, ulp_num) (((struct hwi_controller *)\
 144                 (GET_HWI_CONTROLLER_WS(pc)))->default_pdu_data[ulp_num].id)
 145 #define HWI_GET_DEF_HDRQ_ID(pc, ulp_num) (((struct hwi_controller *)\
 146                 (GET_HWI_CONTROLLER_WS(pc)))->default_pdu_hdr[ulp_num].id)
 147 
 148 #define PAGES_REQUIRED(x) \
 149         ((x < PAGE_SIZE) ? 1 :  ((x + PAGE_SIZE - 1) / PAGE_SIZE))
 150 
 151 #define MEM_DESCR_OFFSET 8
 152 #define BEISCSI_DEFQ_HDR 1
 153 #define BEISCSI_DEFQ_DATA 0
 154 enum be_mem_enum {
 155         HWI_MEM_ADDN_CONTEXT,
 156         HWI_MEM_WRB,
 157         HWI_MEM_WRBH,
 158         HWI_MEM_SGLH,
 159         HWI_MEM_SGE,
 160         HWI_MEM_TEMPLATE_HDR_ULP0,
 161         HWI_MEM_ASYNC_HEADER_BUF_ULP0,  /* 6 */
 162         HWI_MEM_ASYNC_DATA_BUF_ULP0,
 163         HWI_MEM_ASYNC_HEADER_RING_ULP0,
 164         HWI_MEM_ASYNC_DATA_RING_ULP0,
 165         HWI_MEM_ASYNC_HEADER_HANDLE_ULP0,
 166         HWI_MEM_ASYNC_DATA_HANDLE_ULP0, /* 11 */
 167         HWI_MEM_ASYNC_PDU_CONTEXT_ULP0,
 168         HWI_MEM_TEMPLATE_HDR_ULP1,
 169         HWI_MEM_ASYNC_HEADER_BUF_ULP1,  /* 14 */
 170         HWI_MEM_ASYNC_DATA_BUF_ULP1,
 171         HWI_MEM_ASYNC_HEADER_RING_ULP1,
 172         HWI_MEM_ASYNC_DATA_RING_ULP1,
 173         HWI_MEM_ASYNC_HEADER_HANDLE_ULP1,
 174         HWI_MEM_ASYNC_DATA_HANDLE_ULP1, /* 19 */
 175         HWI_MEM_ASYNC_PDU_CONTEXT_ULP1,
 176         ISCSI_MEM_GLOBAL_HEADER,
 177         SE_MEM_MAX
 178 };
 179 
 180 struct be_bus_address32 {
 181         unsigned int address_lo;
 182         unsigned int address_hi;
 183 };
 184 
 185 struct be_bus_address64 {
 186         unsigned long long address;
 187 };
 188 
 189 struct be_bus_address {
 190         union {
 191                 struct be_bus_address32 a32;
 192                 struct be_bus_address64 a64;
 193         } u;
 194 };
 195 
 196 struct mem_array {
 197         struct be_bus_address bus_address;      /* Bus address of location */
 198         void *virtual_address;          /* virtual address to the location */
 199         unsigned int size;              /* Size required by memory block */
 200 };
 201 
 202 struct be_mem_descriptor {
 203         unsigned int size_in_bytes;     /* Size required by memory block */
 204         unsigned int num_elements;
 205         struct mem_array *mem_array;
 206 };
 207 
 208 struct sgl_handle {
 209         unsigned int sgl_index;
 210         unsigned int type;
 211         unsigned int cid;
 212         struct iscsi_task *task;
 213         struct iscsi_sge *pfrag;
 214 };
 215 
 216 struct hba_parameters {
 217         unsigned int ios_per_ctrl;
 218         unsigned int cxns_per_ctrl;
 219         unsigned int icds_per_ctrl;
 220         unsigned int num_sge_per_io;
 221         unsigned int defpdu_hdr_sz;
 222         unsigned int defpdu_data_sz;
 223         unsigned int num_cq_entries;
 224         unsigned int num_eq_entries;
 225         unsigned int wrbs_per_cxn;
 226         unsigned int hwi_ws_sz;
 227 };
 228 
 229 #define BEISCSI_GET_ULP_FROM_CRI(phwi_ctrlr, cri) \
 230         (phwi_ctrlr->wrb_context[cri].ulp_num)
 231 struct hwi_wrb_context {
 232         spinlock_t wrb_lock;
 233         struct wrb_handle **pwrb_handle_base;
 234         struct wrb_handle **pwrb_handle_basestd;
 235         struct iscsi_wrb *plast_wrb;
 236         unsigned short alloc_index;
 237         unsigned short free_index;
 238         unsigned short wrb_handles_available;
 239         unsigned short cid;
 240         uint8_t ulp_num;        /* ULP to which CID binded */
 241         uint32_t doorbell_offset;
 242 };
 243 
 244 struct ulp_cid_info {
 245         unsigned short *cid_array;
 246         unsigned short avlbl_cids;
 247         unsigned short cid_alloc;
 248         unsigned short cid_free;
 249 };
 250 
 251 #include "be.h"
 252 #define chip_be2(phba)      (phba->generation == BE_GEN2)
 253 #define chip_be3_r(phba)    (phba->generation == BE_GEN3)
 254 #define is_chip_be2_be3r(phba) (chip_be3_r(phba) || (chip_be2(phba)))
 255 
 256 #define BEISCSI_ULP0    0
 257 #define BEISCSI_ULP1    1
 258 #define BEISCSI_ULP_COUNT   2
 259 #define BEISCSI_ULP0_LOADED 0x01
 260 #define BEISCSI_ULP1_LOADED 0x02
 261 
 262 #define BEISCSI_ULP_AVLBL_CID(phba, ulp_num) \
 263         (((struct ulp_cid_info *)phba->cid_array_info[ulp_num])->avlbl_cids)
 264 #define BEISCSI_ULP0_AVLBL_CID(phba) \
 265         BEISCSI_ULP_AVLBL_CID(phba, BEISCSI_ULP0)
 266 #define BEISCSI_ULP1_AVLBL_CID(phba) \
 267         BEISCSI_ULP_AVLBL_CID(phba, BEISCSI_ULP1)
 268 
 269 struct beiscsi_hba {
 270         struct hba_parameters params;
 271         struct hwi_controller *phwi_ctrlr;
 272         unsigned int mem_req[SE_MEM_MAX];
 273         /* PCI BAR mapped addresses */
 274         u8 __iomem *csr_va;     /* CSR */
 275         u8 __iomem *db_va;      /* Door  Bell  */
 276         u8 __iomem *pci_va;     /* PCI Config */
 277         /* PCI representation of our HBA */
 278         struct pci_dev *pcidev;
 279         unsigned int num_cpus;
 280         unsigned int nxt_cqid;
 281         char *msi_name[MAX_CPUS];
 282         struct be_mem_descriptor *init_mem;
 283 
 284         unsigned short io_sgl_alloc_index;
 285         unsigned short io_sgl_free_index;
 286         unsigned short io_sgl_hndl_avbl;
 287         struct sgl_handle **io_sgl_hndl_base;
 288 
 289         unsigned short eh_sgl_alloc_index;
 290         unsigned short eh_sgl_free_index;
 291         unsigned short eh_sgl_hndl_avbl;
 292         struct sgl_handle **eh_sgl_hndl_base;
 293         spinlock_t io_sgl_lock;
 294         spinlock_t mgmt_sgl_lock;
 295         spinlock_t async_pdu_lock;
 296         struct list_head hba_queue;
 297 #define BE_MAX_SESSION 2048
 298 #define BE_INVALID_CID 0xffff
 299 #define BE_SET_CID_TO_CRI(cri_index, cid) \
 300                           (phba->cid_to_cri_map[cid] = cri_index)
 301 #define BE_GET_CRI_FROM_CID(cid) (phba->cid_to_cri_map[cid])
 302         unsigned short cid_to_cri_map[BE_MAX_SESSION];
 303         struct ulp_cid_info *cid_array_info[BEISCSI_ULP_COUNT];
 304         struct iscsi_endpoint **ep_array;
 305         struct beiscsi_conn **conn_table;
 306         struct Scsi_Host *shost;
 307         struct iscsi_iface *ipv4_iface;
 308         struct iscsi_iface *ipv6_iface;
 309         struct {
 310                 /**
 311                  * group together since they are used most frequently
 312                  * for cid to cri conversion
 313                  */
 314 #define BEISCSI_PHYS_PORT_MAX   4
 315                 unsigned int phys_port;
 316                 /* valid values of phys_port id are 0, 1, 2, 3 */
 317                 unsigned int eqid_count;
 318                 unsigned int cqid_count;
 319                 unsigned int iscsi_cid_start[BEISCSI_ULP_COUNT];
 320 #define BEISCSI_GET_CID_COUNT(phba, ulp_num) \
 321                 (phba->fw_config.iscsi_cid_count[ulp_num])
 322                 unsigned int iscsi_cid_count[BEISCSI_ULP_COUNT];
 323                 unsigned int iscsi_icd_count[BEISCSI_ULP_COUNT];
 324                 unsigned int iscsi_icd_start[BEISCSI_ULP_COUNT];
 325                 unsigned int iscsi_chain_start[BEISCSI_ULP_COUNT];
 326                 unsigned int iscsi_chain_count[BEISCSI_ULP_COUNT];
 327 
 328                 unsigned short iscsi_features;
 329                 uint16_t dual_ulp_aware;
 330                 unsigned long ulp_supported;
 331         } fw_config;
 332 
 333         unsigned long state;
 334 #define BEISCSI_HBA_ONLINE      0
 335 #define BEISCSI_HBA_LINK_UP     1
 336 #define BEISCSI_HBA_BOOT_FOUND  2
 337 #define BEISCSI_HBA_BOOT_WORK   3
 338 #define BEISCSI_HBA_UER_SUPP    4
 339 #define BEISCSI_HBA_PCI_ERR     5
 340 #define BEISCSI_HBA_FW_TIMEOUT  6
 341 #define BEISCSI_HBA_IN_UE       7
 342 #define BEISCSI_HBA_IN_TPE      8
 343 
 344 /* error bits */
 345 #define BEISCSI_HBA_IN_ERR      ((1 << BEISCSI_HBA_PCI_ERR) | \
 346                                  (1 << BEISCSI_HBA_FW_TIMEOUT) | \
 347                                  (1 << BEISCSI_HBA_IN_UE) | \
 348                                  (1 << BEISCSI_HBA_IN_TPE))
 349 
 350         u8 optic_state;
 351         struct delayed_work eqd_update;
 352         /* update EQ delay timer every 1000ms */
 353 #define BEISCSI_EQD_UPDATE_INTERVAL     1000
 354         struct timer_list hw_check;
 355         /* check for UE every 1000ms */
 356 #define BEISCSI_UE_DETECT_INTERVAL      1000
 357         u32 ue2rp;
 358         struct delayed_work recover_port;
 359         struct work_struct sess_work;
 360 
 361         bool mac_addr_set;
 362         u8 mac_address[ETH_ALEN];
 363         u8 port_name;
 364         u8 port_speed;
 365         char fw_ver_str[BEISCSI_VER_STRLEN];
 366         struct workqueue_struct *wq;    /* The actuak work queue */
 367         struct be_ctrl_info ctrl;
 368         unsigned int generation;
 369         unsigned int interface_handle;
 370 
 371         struct be_aic_obj aic_obj[MAX_CPUS];
 372         unsigned int attr_log_enable;
 373         int (*iotask_fn)(struct iscsi_task *,
 374                         struct scatterlist *sg,
 375                         uint32_t num_sg, uint32_t xferlen,
 376                         uint32_t writedir);
 377         struct boot_struct {
 378                 int retry;
 379                 unsigned int tag;
 380                 unsigned int s_handle;
 381                 struct be_dma_mem nonemb_cmd;
 382                 enum {
 383                         BEISCSI_BOOT_REOPEN_SESS = 1,
 384                         BEISCSI_BOOT_GET_SHANDLE,
 385                         BEISCSI_BOOT_GET_SINFO,
 386                         BEISCSI_BOOT_LOGOUT_SESS,
 387                         BEISCSI_BOOT_CREATE_KSET,
 388                 } action;
 389                 struct mgmt_session_info boot_sess;
 390                 struct iscsi_boot_kset *boot_kset;
 391         } boot_struct;
 392         struct work_struct boot_work;
 393 };
 394 
 395 #define beiscsi_hba_in_error(phba) ((phba)->state & BEISCSI_HBA_IN_ERR)
 396 #define beiscsi_hba_is_online(phba) \
 397         (!beiscsi_hba_in_error((phba)) && \
 398          test_bit(BEISCSI_HBA_ONLINE, &phba->state))
 399 
 400 struct beiscsi_session {
 401         struct dma_pool *bhs_pool;
 402 };
 403 
 404 /**
 405  * struct beiscsi_conn - iscsi connection structure
 406  */
 407 struct beiscsi_conn {
 408         struct iscsi_conn *conn;
 409         struct beiscsi_hba *phba;
 410         u32 exp_statsn;
 411         u32 doorbell_offset;
 412         u32 beiscsi_conn_cid;
 413         struct beiscsi_endpoint *ep;
 414         unsigned short login_in_progress;
 415         struct wrb_handle *plogin_wrb_handle;
 416         struct sgl_handle *plogin_sgl_handle;
 417         struct beiscsi_session *beiscsi_sess;
 418         struct iscsi_task *task;
 419 };
 420 
 421 /* This structure is used by the chip */
 422 struct pdu_data_out {
 423         u32 dw[12];
 424 };
 425 /**
 426  * Pseudo amap definition in which each bit of the actual structure is defined
 427  * as a byte: used to calculate offset/shift/mask of each field
 428  */
 429 struct amap_pdu_data_out {
 430         u8 opcode[6];           /* opcode */
 431         u8 rsvd0[2];            /* should be 0 */
 432         u8 rsvd1[7];
 433         u8 final_bit;           /* F bit */
 434         u8 rsvd2[16];
 435         u8 ahs_length[8];       /* no AHS */
 436         u8 data_len_hi[8];
 437         u8 data_len_lo[16];     /* DataSegmentLength */
 438         u8 lun[64];
 439         u8 itt[32];             /* ITT; initiator task tag */
 440         u8 ttt[32];             /* TTT; valid for R2T or 0xffffffff */
 441         u8 rsvd3[32];
 442         u8 exp_stat_sn[32];
 443         u8 rsvd4[32];
 444         u8 data_sn[32];
 445         u8 buffer_offset[32];
 446         u8 rsvd5[32];
 447 };
 448 
 449 struct be_cmd_bhs {
 450         struct iscsi_scsi_req iscsi_hdr;
 451         unsigned char pad1[16];
 452         struct pdu_data_out iscsi_data_pdu;
 453         unsigned char pad2[BE_SENSE_INFO_SIZE -
 454                         sizeof(struct pdu_data_out)];
 455 };
 456 
 457 struct beiscsi_io_task {
 458         struct wrb_handle *pwrb_handle;
 459         struct sgl_handle *psgl_handle;
 460         struct beiscsi_conn *conn;
 461         struct scsi_cmnd *scsi_cmnd;
 462         int num_sg;
 463         struct hwi_wrb_context *pwrb_context;
 464         itt_t libiscsi_itt;
 465         struct be_cmd_bhs *cmd_bhs;
 466         struct be_bus_address bhs_pa;
 467         unsigned short bhs_len;
 468         dma_addr_t mtask_addr;
 469         uint32_t mtask_data_count;
 470         uint8_t wrb_type;
 471 };
 472 
 473 struct be_nonio_bhs {
 474         struct iscsi_hdr iscsi_hdr;
 475         unsigned char pad1[16];
 476         struct pdu_data_out iscsi_data_pdu;
 477         unsigned char pad2[BE_SENSE_INFO_SIZE -
 478                         sizeof(struct pdu_data_out)];
 479 };
 480 
 481 struct be_status_bhs {
 482         struct iscsi_scsi_req iscsi_hdr;
 483         unsigned char pad1[16];
 484         /**
 485          * The plus 2 below is to hold the sense info length that gets
 486          * DMA'ed by RxULP
 487          */
 488         unsigned char sense_info[BE_SENSE_INFO_SIZE];
 489 };
 490 
 491 struct iscsi_sge {
 492         u32 dw[4];
 493 };
 494 
 495 /**
 496  * Pseudo amap definition in which each bit of the actual structure is defined
 497  * as a byte: used to calculate offset/shift/mask of each field
 498  */
 499 struct amap_iscsi_sge {
 500         u8 addr_hi[32];
 501         u8 addr_lo[32];
 502         u8 sge_offset[22];      /* DWORD 2 */
 503         u8 rsvd0[9];            /* DWORD 2 */
 504         u8 last_sge;            /* DWORD 2 */
 505         u8 len[17];             /* DWORD 3 */
 506         u8 rsvd1[15];           /* DWORD 3 */
 507 };
 508 
 509 struct beiscsi_offload_params {
 510         u32 dw[6];
 511 };
 512 
 513 #define OFFLD_PARAMS_ERL        0x00000003
 514 #define OFFLD_PARAMS_DDE        0x00000004
 515 #define OFFLD_PARAMS_HDE        0x00000008
 516 #define OFFLD_PARAMS_IR2T       0x00000010
 517 #define OFFLD_PARAMS_IMD        0x00000020
 518 #define OFFLD_PARAMS_DATA_SEQ_INORDER   0x00000040
 519 #define OFFLD_PARAMS_PDU_SEQ_INORDER    0x00000080
 520 #define OFFLD_PARAMS_MAX_R2T 0x00FFFF00
 521 
 522 /**
 523  * Pseudo amap definition in which each bit of the actual structure is defined
 524  * as a byte: used to calculate offset/shift/mask of each field
 525  */
 526 struct amap_beiscsi_offload_params {
 527         u8 max_burst_length[32];
 528         u8 max_send_data_segment_length[32];
 529         u8 first_burst_length[32];
 530         u8 erl[2];
 531         u8 dde[1];
 532         u8 hde[1];
 533         u8 ir2t[1];
 534         u8 imd[1];
 535         u8 data_seq_inorder[1];
 536         u8 pdu_seq_inorder[1];
 537         u8 max_r2t[16];
 538         u8 pad[8];
 539         u8 exp_statsn[32];
 540         u8 max_recv_data_segment_length[32];
 541 };
 542 
 543 struct hd_async_handle {
 544         struct list_head link;
 545         struct be_bus_address pa;
 546         void *pbuffer;
 547         u32 buffer_len;
 548         u16 index;
 549         u16 cri;
 550         u8 is_header;
 551         u8 is_final;
 552         u8 in_use;
 553 };
 554 
 555 #define BEISCSI_ASYNC_HDQ_SIZE(phba, ulp) \
 556         (BEISCSI_GET_CID_COUNT((phba), (ulp)) * 2)
 557 
 558 /**
 559  * This has list of async PDUs that are waiting to be processed.
 560  * Buffers live in this list for a brief duration before they get
 561  * processed and posted back to hardware.
 562  * Note that we don't really need one cri_wait_queue per async_entry.
 563  * We need one cri_wait_queue per CRI. Its easier to manage if this
 564  * is tagged along with the async_entry.
 565  */
 566 struct hd_async_entry {
 567         struct cri_wait_queue {
 568                 unsigned short hdr_len;
 569                 unsigned int bytes_received;
 570                 unsigned int bytes_needed;
 571                 struct list_head list;
 572         } wq;
 573         /* handles posted to FW resides here */
 574         struct hd_async_handle *header;
 575         struct hd_async_handle *data;
 576 };
 577 
 578 struct hd_async_buf_context {
 579         struct be_bus_address pa_base;
 580         void *va_base;
 581         void *ring_base;
 582         struct hd_async_handle *handle_base;
 583         u32 buffer_size;
 584         u16 pi;
 585 };
 586 
 587 /**
 588  * hd_async_context is declared for each ULP supporting iSCSI function.
 589  */
 590 struct hd_async_context {
 591         struct hd_async_buf_context async_header;
 592         struct hd_async_buf_context async_data;
 593         u16 num_entries;
 594         /**
 595          * When unsol PDU is in, it needs to be chained till all the bytes are
 596          * received and then processing is done. hd_async_entry is created
 597          * based on the cid_count for each ULP. When unsol PDU comes in based
 598          * on the conn_id it needs to be added to the correct async_entry wq.
 599          * Below defined cid_to_async_cri_map is used to reterive the
 600          * async_cri_map for a particular connection.
 601          *
 602          * This array is initialized after beiscsi_create_wrb_rings returns.
 603          *
 604          * - this method takes more memory space, fixed to 2K
 605          * - any support for connections greater than this the array size needs
 606          * to be incremented
 607          */
 608 #define BE_GET_ASYNC_CRI_FROM_CID(cid) (pasync_ctx->cid_to_async_cri_map[cid])
 609         unsigned short cid_to_async_cri_map[BE_MAX_SESSION];
 610         /**
 611          * This is a variable size array. Don`t add anything after this field!!
 612          */
 613         struct hd_async_entry *async_entry;
 614 };
 615 
 616 struct i_t_dpdu_cqe {
 617         u32 dw[4];
 618 } __packed;
 619 
 620 /**
 621  * Pseudo amap definition in which each bit of the actual structure is defined
 622  * as a byte: used to calculate offset/shift/mask of each field
 623  */
 624 struct amap_i_t_dpdu_cqe {
 625         u8 db_addr_hi[32];
 626         u8 db_addr_lo[32];
 627         u8 code[6];
 628         u8 cid[10];
 629         u8 dpl[16];
 630         u8 index[16];
 631         u8 num_cons[10];
 632         u8 rsvd0[4];
 633         u8 final;
 634         u8 valid;
 635 } __packed;
 636 
 637 struct amap_i_t_dpdu_cqe_v2 {
 638         u8 db_addr_hi[32];  /* DWORD 0 */
 639         u8 db_addr_lo[32];  /* DWORD 1 */
 640         u8 code[6]; /* DWORD 2 */
 641         u8 num_cons; /* DWORD 2*/
 642         u8 rsvd0[8]; /* DWORD 2 */
 643         u8 dpl[17]; /* DWORD 2 */
 644         u8 index[16]; /* DWORD 3 */
 645         u8 cid[13]; /* DWORD 3 */
 646         u8 rsvd1; /* DWORD 3 */
 647         u8 final; /* DWORD 3 */
 648         u8 valid; /* DWORD 3 */
 649 } __packed;
 650 
 651 #define CQE_VALID_MASK  0x80000000
 652 #define CQE_CODE_MASK   0x0000003F
 653 #define CQE_CID_MASK    0x0000FFC0
 654 
 655 #define EQE_VALID_MASK          0x00000001
 656 #define EQE_MAJORCODE_MASK      0x0000000E
 657 #define EQE_RESID_MASK          0xFFFF0000
 658 
 659 struct be_eq_entry {
 660         u32 dw[1];
 661 } __packed;
 662 
 663 /**
 664  * Pseudo amap definition in which each bit of the actual structure is defined
 665  * as a byte: used to calculate offset/shift/mask of each field
 666  */
 667 struct amap_eq_entry {
 668         u8 valid;               /* DWORD 0 */
 669         u8 major_code[3];       /* DWORD 0 */
 670         u8 minor_code[12];      /* DWORD 0 */
 671         u8 resource_id[16];     /* DWORD 0 */
 672 
 673 } __packed;
 674 
 675 struct cq_db {
 676         u32 dw[1];
 677 } __packed;
 678 
 679 /**
 680  * Pseudo amap definition in which each bit of the actual structure is defined
 681  * as a byte: used to calculate offset/shift/mask of each field
 682  */
 683 struct amap_cq_db {
 684         u8 qid[10];
 685         u8 event[1];
 686         u8 rsvd0[5];
 687         u8 num_popped[13];
 688         u8 rearm[1];
 689         u8 rsvd1[2];
 690 } __packed;
 691 
 692 void beiscsi_process_eq(struct beiscsi_hba *phba);
 693 
 694 struct iscsi_wrb {
 695         u32 dw[16];
 696 } __packed;
 697 
 698 #define WRB_TYPE_MASK 0xF0000000
 699 #define SKH_WRB_TYPE_OFFSET 27
 700 #define BE_WRB_TYPE_OFFSET  28
 701 
 702 #define ADAPTER_SET_WRB_TYPE(pwrb, wrb_type, type_offset) \
 703                 (pwrb->dw[0] |= (wrb_type << type_offset))
 704 
 705 /**
 706  * Pseudo amap definition in which each bit of the actual structure is defined
 707  * as a byte: used to calculate offset/shift/mask of each field
 708  */
 709 struct amap_iscsi_wrb {
 710         u8 lun[14];             /* DWORD 0 */
 711         u8 lt;                  /* DWORD 0 */
 712         u8 invld;               /* DWORD 0 */
 713         u8 wrb_idx[8];          /* DWORD 0 */
 714         u8 dsp;                 /* DWORD 0 */
 715         u8 dmsg;                /* DWORD 0 */
 716         u8 undr_run;            /* DWORD 0 */
 717         u8 over_run;            /* DWORD 0 */
 718         u8 type[4];             /* DWORD 0 */
 719         u8 ptr2nextwrb[8];      /* DWORD 1 */
 720         u8 r2t_exp_dtl[24];     /* DWORD 1 */
 721         u8 sgl_icd_idx[12];     /* DWORD 2 */
 722         u8 rsvd0[20];           /* DWORD 2 */
 723         u8 exp_data_sn[32];     /* DWORD 3 */
 724         u8 iscsi_bhs_addr_hi[32];       /* DWORD 4 */
 725         u8 iscsi_bhs_addr_lo[32];       /* DWORD 5 */
 726         u8 cmdsn_itt[32];       /* DWORD 6 */
 727         u8 dif_ref_tag[32];     /* DWORD 7 */
 728         u8 sge0_addr_hi[32];    /* DWORD 8 */
 729         u8 sge0_addr_lo[32];    /* DWORD 9  */
 730         u8 sge0_offset[22];     /* DWORD 10 */
 731         u8 pbs;                 /* DWORD 10 */
 732         u8 dif_mode[2];         /* DWORD 10 */
 733         u8 rsvd1[6];            /* DWORD 10 */
 734         u8 sge0_last;           /* DWORD 10 */
 735         u8 sge0_len[17];        /* DWORD 11 */
 736         u8 dif_meta_tag[14];    /* DWORD 11 */
 737         u8 sge0_in_ddr;         /* DWORD 11 */
 738         u8 sge1_addr_hi[32];    /* DWORD 12 */
 739         u8 sge1_addr_lo[32];    /* DWORD 13 */
 740         u8 sge1_r2t_offset[22]; /* DWORD 14 */
 741         u8 rsvd2[9];            /* DWORD 14 */
 742         u8 sge1_last;           /* DWORD 14 */
 743         u8 sge1_len[17];        /* DWORD 15 */
 744         u8 ref_sgl_icd_idx[12]; /* DWORD 15 */
 745         u8 rsvd3[2];            /* DWORD 15 */
 746         u8 sge1_in_ddr;         /* DWORD 15 */
 747 
 748 } __packed;
 749 
 750 struct amap_iscsi_wrb_v2 {
 751         u8 r2t_exp_dtl[25]; /* DWORD 0 */
 752         u8 rsvd0[2];    /* DWORD 0*/
 753         u8 type[5];     /* DWORD 0 */
 754         u8 ptr2nextwrb[8];  /* DWORD 1 */
 755         u8 wrb_idx[8];      /* DWORD 1 */
 756         u8 lun[16];     /* DWORD 1 */
 757         u8 sgl_idx[16]; /* DWORD 2 */
 758         u8 ref_sgl_icd_idx[16]; /* DWORD 2 */
 759         u8 exp_data_sn[32]; /* DWORD 3 */
 760         u8 iscsi_bhs_addr_hi[32];   /* DWORD 4 */
 761         u8 iscsi_bhs_addr_lo[32];   /* DWORD 5 */
 762         u8 cq_id[16];   /* DWORD 6 */
 763         u8 rsvd1[16];   /* DWORD 6 */
 764         u8 cmdsn_itt[32];   /* DWORD 7 */
 765         u8 sge0_addr_hi[32];    /* DWORD 8 */
 766         u8 sge0_addr_lo[32];    /* DWORD 9 */
 767         u8 sge0_offset[24]; /* DWORD 10 */
 768         u8 rsvd2[7];    /* DWORD 10 */
 769         u8 sge0_last;   /* DWORD 10 */
 770         u8 sge0_len[17];    /* DWORD 11 */
 771         u8 rsvd3[7];    /* DWORD 11 */
 772         u8 diff_enbl;   /* DWORD 11 */
 773         u8 u_run;       /* DWORD 11 */
 774         u8 o_run;       /* DWORD 11 */
 775         u8 invld;     /* DWORD 11 */
 776         u8 dsp;         /* DWORD 11 */
 777         u8 dmsg;        /* DWORD 11 */
 778         u8 rsvd4;       /* DWORD 11 */
 779         u8 lt;          /* DWORD 11 */
 780         u8 sge1_addr_hi[32];    /* DWORD 12 */
 781         u8 sge1_addr_lo[32];    /* DWORD 13 */
 782         u8 sge1_r2t_offset[24]; /* DWORD 14 */
 783         u8 rsvd5[7];    /* DWORD 14 */
 784         u8 sge1_last;   /* DWORD 14 */
 785         u8 sge1_len[17];    /* DWORD 15 */
 786         u8 rsvd6[15];   /* DWORD 15 */
 787 } __packed;
 788 
 789 
 790 struct wrb_handle *alloc_wrb_handle(struct beiscsi_hba *phba, unsigned int cid,
 791                                      struct hwi_wrb_context **pcontext);
 792 void
 793 free_mgmt_sgl_handle(struct beiscsi_hba *phba, struct sgl_handle *psgl_handle);
 794 
 795 void beiscsi_free_mgmt_task_handles(struct beiscsi_conn *beiscsi_conn,
 796                                      struct iscsi_task *task);
 797 
 798 void hwi_ring_cq_db(struct beiscsi_hba *phba,
 799                      unsigned int id, unsigned int num_processed,
 800                      unsigned char rearm);
 801 
 802 unsigned int beiscsi_process_cq(struct be_eq_obj *pbe_eq, int budget);
 803 void beiscsi_process_mcc_cq(struct beiscsi_hba *phba);
 804 
 805 struct pdu_nop_out {
 806         u32 dw[12];
 807 };
 808 
 809 /**
 810  * Pseudo amap definition in which each bit of the actual structure is defined
 811  * as a byte: used to calculate offset/shift/mask of each field
 812  */
 813 struct amap_pdu_nop_out {
 814         u8 opcode[6];           /* opcode 0x00 */
 815         u8 i_bit;               /* I Bit */
 816         u8 x_bit;               /* reserved; should be 0 */
 817         u8 fp_bit_filler1[7];
 818         u8 f_bit;               /* always 1 */
 819         u8 reserved1[16];
 820         u8 ahs_length[8];       /* no AHS */
 821         u8 data_len_hi[8];
 822         u8 data_len_lo[16];     /* DataSegmentLength */
 823         u8 lun[64];
 824         u8 itt[32];             /* initiator id for ping or 0xffffffff */
 825         u8 ttt[32];             /* target id for ping or 0xffffffff */
 826         u8 cmd_sn[32];
 827         u8 exp_stat_sn[32];
 828         u8 reserved5[128];
 829 };
 830 
 831 #define PDUBASE_OPCODE_MASK     0x0000003F
 832 #define PDUBASE_DATALENHI_MASK  0x0000FF00
 833 #define PDUBASE_DATALENLO_MASK  0xFFFF0000
 834 
 835 struct pdu_base {
 836         u32 dw[16];
 837 } __packed;
 838 
 839 /**
 840  * Pseudo amap definition in which each bit of the actual structure is defined
 841  * as a byte: used to calculate offset/shift/mask of each field
 842  */
 843 struct amap_pdu_base {
 844         u8 opcode[6];
 845         u8 i_bit;               /* immediate bit */
 846         u8 x_bit;               /* reserved, always 0 */
 847         u8 reserved1[24];       /* opcode-specific fields */
 848         u8 ahs_length[8];       /* length units is 4 byte words */
 849         u8 data_len_hi[8];
 850         u8 data_len_lo[16];     /* DatasegmentLength */
 851         u8 lun[64];             /* lun or opcode-specific fields */
 852         u8 itt[32];             /* initiator task tag */
 853         u8 reserved4[224];
 854 };
 855 
 856 struct iscsi_target_context_update_wrb {
 857         u32 dw[16];
 858 } __packed;
 859 
 860 /**
 861  * Pseudo amap definition in which each bit of the actual structure is defined
 862  * as a byte: used to calculate offset/shift/mask of each field
 863  */
 864 #define BE_TGT_CTX_UPDT_CMD 0x07
 865 struct amap_iscsi_target_context_update_wrb {
 866         u8 lun[14];             /* DWORD 0 */
 867         u8 lt;                  /* DWORD 0 */
 868         u8 invld;               /* DWORD 0 */
 869         u8 wrb_idx[8];          /* DWORD 0 */
 870         u8 dsp;                 /* DWORD 0 */
 871         u8 dmsg;                /* DWORD 0 */
 872         u8 undr_run;            /* DWORD 0 */
 873         u8 over_run;            /* DWORD 0 */
 874         u8 type[4];             /* DWORD 0 */
 875         u8 ptr2nextwrb[8];      /* DWORD 1 */
 876         u8 max_burst_length[19];        /* DWORD 1 */
 877         u8 rsvd0[5];            /* DWORD 1 */
 878         u8 rsvd1[15];           /* DWORD 2 */
 879         u8 max_send_data_segment_length[17];    /* DWORD 2 */
 880         u8 first_burst_length[14];      /* DWORD 3 */
 881         u8 rsvd2[2];            /* DWORD 3 */
 882         u8 tx_wrbindex_drv_msg[8];      /* DWORD 3 */
 883         u8 rsvd3[5];            /* DWORD 3 */
 884         u8 session_state[3];    /* DWORD 3 */
 885         u8 rsvd4[16];           /* DWORD 4 */
 886         u8 tx_jumbo;            /* DWORD 4 */
 887         u8 hde;                 /* DWORD 4 */
 888         u8 dde;                 /* DWORD 4 */
 889         u8 erl[2];              /* DWORD 4 */
 890         u8 domain_id[5];                /* DWORD 4 */
 891         u8 mode;                /* DWORD 4 */
 892         u8 imd;                 /* DWORD 4 */
 893         u8 ir2t;                /* DWORD 4 */
 894         u8 notpredblq[2];       /* DWORD 4 */
 895         u8 compltonack;         /* DWORD 4 */
 896         u8 stat_sn[32];         /* DWORD 5 */
 897         u8 pad_buffer_addr_hi[32];      /* DWORD 6 */
 898         u8 pad_buffer_addr_lo[32];      /* DWORD 7 */
 899         u8 pad_addr_hi[32];     /* DWORD 8 */
 900         u8 pad_addr_lo[32];     /* DWORD 9 */
 901         u8 rsvd5[32];           /* DWORD 10 */
 902         u8 rsvd6[32];           /* DWORD 11 */
 903         u8 rsvd7[32];           /* DWORD 12 */
 904         u8 rsvd8[32];           /* DWORD 13 */
 905         u8 rsvd9[32];           /* DWORD 14 */
 906         u8 rsvd10[32];          /* DWORD 15 */
 907 
 908 } __packed;
 909 
 910 #define BEISCSI_MAX_RECV_DATASEG_LEN    (64 * 1024)
 911 #define BEISCSI_MAX_CXNS    1
 912 struct amap_iscsi_target_context_update_wrb_v2 {
 913         u8 max_burst_length[24];    /* DWORD 0 */
 914         u8 rsvd0[3];    /* DWORD 0 */
 915         u8 type[5];     /* DWORD 0 */
 916         u8 ptr2nextwrb[8];  /* DWORD 1 */
 917         u8 wrb_idx[8];      /* DWORD 1 */
 918         u8 rsvd1[16];       /* DWORD 1 */
 919         u8 max_send_data_segment_length[24];    /* DWORD 2 */
 920         u8 rsvd2[8];    /* DWORD 2 */
 921         u8 first_burst_length[24]; /* DWORD 3 */
 922         u8 rsvd3[8]; /* DOWRD 3 */
 923         u8 max_r2t[16]; /* DWORD 4 */
 924         u8 rsvd4;       /* DWORD 4 */
 925         u8 hde;         /* DWORD 4 */
 926         u8 dde;         /* DWORD 4 */
 927         u8 erl[2];      /* DWORD 4 */
 928         u8 rsvd5[6];    /* DWORD 4 */
 929         u8 imd;         /* DWORD 4 */
 930         u8 ir2t;        /* DWORD 4 */
 931         u8 rsvd6[3];    /* DWORD 4 */
 932         u8 stat_sn[32];     /* DWORD 5 */
 933         u8 rsvd7[32];   /* DWORD 6 */
 934         u8 rsvd8[32];   /* DWORD 7 */
 935         u8 max_recv_dataseg_len[24];    /* DWORD 8 */
 936         u8 rsvd9[8]; /* DWORD 8 */
 937         u8 rsvd10[32];   /* DWORD 9 */
 938         u8 rsvd11[32];   /* DWORD 10 */
 939         u8 max_cxns[16]; /* DWORD 11 */
 940         u8 rsvd12[11]; /* DWORD  11*/
 941         u8 invld; /* DWORD 11 */
 942         u8 rsvd13;/* DWORD 11*/
 943         u8 dmsg; /* DWORD 11 */
 944         u8 data_seq_inorder; /* DWORD 11 */
 945         u8 pdu_seq_inorder; /* DWORD 11 */
 946         u8 rsvd14[32]; /*DWORD 12 */
 947         u8 rsvd15[32]; /* DWORD 13 */
 948         u8 rsvd16[32]; /* DWORD 14 */
 949         u8 rsvd17[32]; /* DWORD 15 */
 950 } __packed;
 951 
 952 
 953 struct be_ring {
 954         u32 pages;              /* queue size in pages */
 955         u32 id;                 /* queue id assigned by beklib */
 956         u32 num;                /* number of elements in queue */
 957         u32 cidx;               /* consumer index */
 958         u32 pidx;               /* producer index -- not used by most rings */
 959         u32 item_size;          /* size in bytes of one object */
 960         u8 ulp_num;     /* ULP to which CID binded */
 961         u16 register_set;
 962         u16 doorbell_format;
 963         u32 doorbell_offset;
 964 
 965         void *va;               /* The virtual address of the ring.  This
 966                                  * should be last to allow 32 & 64 bit debugger
 967                                  * extensions to work.
 968                                  */
 969 };
 970 
 971 struct hwi_controller {
 972         struct hwi_wrb_context *wrb_context;
 973         struct be_ring default_pdu_hdr[BEISCSI_ULP_COUNT];
 974         struct be_ring default_pdu_data[BEISCSI_ULP_COUNT];
 975         struct hwi_context_memory *phwi_ctxt;
 976 };
 977 
 978 enum hwh_type_enum {
 979         HWH_TYPE_IO = 1,
 980         HWH_TYPE_LOGOUT = 2,
 981         HWH_TYPE_TMF = 3,
 982         HWH_TYPE_NOP = 4,
 983         HWH_TYPE_IO_RD = 5,
 984         HWH_TYPE_LOGIN = 11,
 985         HWH_TYPE_INVALID = 0xFFFFFFFF
 986 };
 987 
 988 struct wrb_handle {
 989         unsigned short wrb_index;
 990         struct iscsi_task *pio_handle;
 991         struct iscsi_wrb *pwrb;
 992 };
 993 
 994 struct hwi_context_memory {
 995         struct be_eq_obj be_eq[MAX_CPUS];
 996         struct be_queue_info be_cq[MAX_CPUS - 1];
 997 
 998         struct be_queue_info *be_wrbq;
 999         /**
1000          * Create array of ULP number for below entries as DEFQ
1001          * will be created for both ULP if iSCSI Protocol is
1002          * loaded on both ULP.
1003          */
1004         struct be_queue_info be_def_hdrq[BEISCSI_ULP_COUNT];
1005         struct be_queue_info be_def_dataq[BEISCSI_ULP_COUNT];
1006         struct hd_async_context *pasync_ctx[BEISCSI_ULP_COUNT];
1007 };
1008 
1009 void beiscsi_start_boot_work(struct beiscsi_hba *phba, unsigned int s_handle);
1010 
1011 /* Logging related definitions */
1012 #define BEISCSI_LOG_INIT        0x0001  /* Initialization events */
1013 #define BEISCSI_LOG_MBOX        0x0002  /* Mailbox Events */
1014 #define BEISCSI_LOG_MISC        0x0004  /* Miscllaneous Events */
1015 #define BEISCSI_LOG_EH          0x0008  /* Error Handler */
1016 #define BEISCSI_LOG_IO          0x0010  /* IO Code Path */
1017 #define BEISCSI_LOG_CONFIG      0x0020  /* CONFIG Code Path */
1018 #define BEISCSI_LOG_ISCSI       0x0040  /* SCSI/iSCSI Protocol related Logs */
1019 
1020 #define __beiscsi_log(phba, level, fmt, arg...) \
1021         shost_printk(level, phba->shost, fmt, __LINE__, ##arg)
1022 
1023 #define beiscsi_log(phba, level, mask, fmt, arg...) \
1024 do { \
1025         uint32_t log_value = phba->attr_log_enable; \
1026                 if (((mask) & log_value) || (level[1] <= '3')) \
1027                         __beiscsi_log(phba, level, fmt, ##arg); \
1028 } while (0);
1029 
1030 #endif
/* [<][>][^][v][top][bottom][index][help] */
root/drivers/scsi/be2iscsi/be_main.h

INCLUDED FROM
