drivers/scsi/lpfc/lpfc_sli.h

   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2017-2024 Broadcom. All Rights Reserved. The term *
   5  * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.     *
   6  * Copyright (C) 2004-2016 Emulex.  All rights reserved.           *
   7  * EMULEX and SLI are trademarks of Emulex.                        *
   8  * www.broadcom.com                                                *
   9  *                                                                 *
  10  * This program is free software; you can redistribute it and/or   *
  11  * modify it under the terms of version 2 of the GNU General       *
  12  * Public License as published by the Free Software Foundation.    *
  13  * This program is distributed in the hope that it will be useful. *
  14  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  15  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  16  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  17  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  18  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  19  * more details, a copy of which can be found in the file COPYING  *
  20  * included with this package.                                     *
  21  *******************************************************************/
  22
  23 #if defined(CONFIG_DEBUG_FS) && !defined(CONFIG_SCSI_LPFC_DEBUG_FS)
  24 #define CONFIG_SCSI_LPFC_DEBUG_FS
  25 #endif
  26
  27 /* forward declaration for LPFC_IOCB_t's use */
  28 struct lpfc_hba;
  29 struct lpfc_vport;
  30
  31 /* Define the context types that SLI handles for abort and sums. */
  32 typedef enum _lpfc_ctx_cmd {
  33         LPFC_CTX_LUN,
  34         LPFC_CTX_TGT,
  35         LPFC_CTX_HOST
  36 } lpfc_ctx_cmd;
  37
  38 /* Enumeration to describe the thread lock context. */
  39 enum lpfc_mbox_ctx {
  40         MBOX_THD_UNLOCKED,
  41         MBOX_THD_LOCKED
  42 };
  43
  44 union lpfc_vmid_tag {
  45         uint32_t app_id;
  46         uint8_t cs_ctl_vmid;
  47         struct lpfc_vmid_context *vmid_context; /* UVEM context information */
  48 };
  49
  50 struct lpfc_cq_event {
  51         struct list_head list;
  52         uint16_t hdwq;
  53         union {
  54                 struct lpfc_mcqe                mcqe_cmpl;
  55                 struct lpfc_acqe_link           acqe_link;
  56                 struct lpfc_acqe_fip            acqe_fip;
  57                 struct lpfc_acqe_dcbx           acqe_dcbx;
  58                 struct lpfc_acqe_grp5           acqe_grp5;
  59                 struct lpfc_acqe_fc_la          acqe_fc;
  60                 struct lpfc_acqe_sli            acqe_sli;
  61                 struct lpfc_rcqe                rcqe_cmpl;
  62                 struct sli4_wcqe_xri_aborted    wcqe_axri;
  63                 struct lpfc_wcqe_complete       wcqe_cmpl;
  64         } cqe;
  65 };
  66
  67 /* This structure is used to handle IOCB requests / responses */
  68 struct lpfc_iocbq {
  69         /* lpfc_iocbqs are used in double linked lists */
  70         struct list_head list;
  71         struct list_head clist;
  72         struct list_head dlist;
  73         uint16_t iotag;         /* pre-assigned IO tag */
  74         uint16_t sli4_lxritag;  /* logical pre-assigned XRI. */
  75         uint16_t sli4_xritag;   /* pre-assigned XRI, (OXID) tag. */
  76         uint16_t hba_wqidx;     /* index to HBA work queue */
  77         struct lpfc_cq_event cq_event;
  78         uint64_t isr_timestamp;
  79
  80         union lpfc_wqe128 wqe;  /* SLI-4 */
  81         IOCB_t iocb;            /* SLI-3 */
  82         struct lpfc_wcqe_complete wcqe_cmpl;    /* WQE cmpl */
  83
  84         u32 unsol_rcv_len;      /* Receive len in usol path */
  85
  86         /* Pack the u8's together and make them module-4. */
  87         u8 num_bdes;    /* Number of BDEs */
  88         u8 abort_bls;   /* ABTS by initiator or responder */
  89         u8 abort_rctl;  /* ACC or RJT flag */
  90         u8 priority;    /* OAS priority */
  91         u8 retry;       /* retry counter for IOCB cmd - if needed */
  92         u8 rsvd1;       /* Pad for u32 */
  93         u8 rsvd2;       /* Pad for u32 */
  94         u8 rsvd3;       /* Pad for u32 */
  95
  96         u32 cmd_flag;
  97 #define LPFC_IO_LIBDFC          1       /* libdfc iocb */
  98 #define LPFC_IO_WAKE            2       /* Synchronous I/O completed */
  99 #define LPFC_IO_WAKE_TMO        LPFC_IO_WAKE /* Synchronous I/O timed out */
 100 #define LPFC_IO_FCP             4       /* FCP command -- iocbq in scsi_buf */
 101 #define LPFC_DRIVER_ABORTED     8       /* driver aborted this request */
 102 #define LPFC_IO_FABRIC          0x10    /* Iocb send using fabric scheduler */
 103 #define LPFC_DELAY_MEM_FREE     0x20    /* Defer free'ing of FC data */
 104 #define LPFC_EXCHANGE_BUSY      0x40    /* SLI4 hba reported XB in response */
 105 #define LPFC_USE_FCPWQIDX       0x80    /* Submit to specified FCPWQ index */
 106 #define DSS_SECURITY_OP         0x100   /* security IO */
 107 #define LPFC_IO_ON_TXCMPLQ      0x200   /* The IO is still on the TXCMPLQ */
 108 #define LPFC_IO_DIF_PASS        0x400   /* T10 DIF IO pass-thru prot */
 109 #define LPFC_IO_DIF_STRIP       0x800   /* T10 DIF IO strip prot */
 110 #define LPFC_IO_DIF_INSERT      0x1000  /* T10 DIF IO insert prot */
 111 #define LPFC_IO_CMD_OUTSTANDING 0x2000 /* timeout handler abort window */
 112
 113 #define LPFC_FIP_ELS_ID_MASK    0xc000  /* ELS_ID range 0-3, non-shifted mask */
 114 #define LPFC_FIP_ELS_ID_SHIFT   14
 115
 116 #define LPFC_IO_OAS             0x10000 /* OAS FCP IO */
 117 #define LPFC_IO_FOF             0x20000 /* FOF FCP IO */
 118 #define LPFC_IO_LOOPBACK        0x40000 /* Loopback IO */
 119 #define LPFC_PRLI_NVME_REQ      0x80000 /* This is an NVME PRLI. */
 120 #define LPFC_PRLI_FCP_REQ       0x100000 /* This is an NVME PRLI. */
 121 #define LPFC_IO_NVME            0x200000 /* NVME FCP command */
 122 #define LPFC_IO_NVME_LS         0x400000 /* NVME LS command */
 123 #define LPFC_IO_NVMET           0x800000 /* NVMET command */
 124 #define LPFC_IO_VMID            0x1000000 /* VMID tagged IO */
 125 #define LPFC_IO_CMF             0x4000000 /* CMF command */
 126
 127         uint32_t drvrTimeout;   /* driver timeout in seconds */
 128         struct lpfc_vport *vport;/* virtual port pointer */
 129         struct lpfc_dmabuf *cmd_dmabuf;
 130         struct lpfc_dmabuf *rsp_dmabuf;
 131         struct lpfc_dmabuf *bpl_dmabuf;
 132         uint32_t event_tag;     /* LA Event tag */
 133         union {
 134                 wait_queue_head_t    *wait_queue;
 135                 struct lpfcMboxq     *mbox;
 136                 struct lpfc_node_rrq *rrq;
 137                 struct nvmefc_ls_req *nvme_lsreq;
 138                 struct lpfc_async_xchg_ctx *axchg;
 139                 struct bsg_job_data *dd_data;
 140         } context_un;
 141
 142         struct lpfc_io_buf *io_buf;
 143         struct lpfc_iocbq *rsp_iocb;
 144         struct lpfc_nodelist *ndlp;
 145         union lpfc_vmid_tag vmid_tag;
 146         void (*fabric_cmd_cmpl)(struct lpfc_hba *phba, struct lpfc_iocbq *cmd,
 147                                 struct lpfc_iocbq *rsp);
 148         void (*wait_cmd_cmpl)(struct lpfc_hba *phba, struct lpfc_iocbq *cmd,
 149                               struct lpfc_iocbq *rsp);
 150         void (*cmd_cmpl)(struct lpfc_hba *phba, struct lpfc_iocbq *cmd,
 151                          struct lpfc_iocbq *rsp);
 152 };
 153
 154 #define SLI_IOCB_RET_IOCB      1        /* Return IOCB if cmd ring full */
 155
 156 #define IOCB_SUCCESS        0
 157 #define IOCB_BUSY           1
 158 #define IOCB_ERROR          2
 159 #define IOCB_TIMEDOUT       3
 160 #define IOCB_ABORTED        4
 161 #define IOCB_ABORTING       5
 162 #define IOCB_NORESOURCE     6
 163
 164 #define SLI_WQE_RET_WQE    1    /* Return WQE if cmd ring full */
 165
 166 #define WQE_SUCCESS        0
 167 #define WQE_BUSY           1
 168 #define WQE_ERROR          2
 169 #define WQE_TIMEDOUT       3
 170 #define WQE_ABORTED        4
 171 #define WQE_ABORTING       5
 172 #define WQE_NORESOURCE     6
 173
 174 #define LPFC_MBX_WAKE           1
 175 #define LPFC_MBX_IMED_UNREG     2
 176
 177 typedef struct lpfcMboxq {
 178         /* MBOXQs are used in single linked lists */
 179         struct list_head list;  /* ptr to next mailbox command */
 180         union {
 181                 MAILBOX_t mb;           /* Mailbox cmd */
 182                 struct lpfc_mqe mqe;
 183         } u;
 184         struct lpfc_vport *vport; /* virtual port pointer */
 185         struct lpfc_nodelist *ctx_ndlp; /* caller ndlp pointer */
 186         struct lpfc_dmabuf *ctx_buf;    /* caller buffer information */
 187         void *ext_buf;                  /* extended buffer for extended mbox
 188                                          * cmds.  Not a generic pointer.
 189                                          * Use for storing virtual address.
 190                                          */
 191
 192         /* Pointers that are seldom used during mbox execution, but require
 193          * a saved context.
 194          */
 195         union {
 196                 unsigned long ox_rx_id;         /* Used in els_rsp_rls_acc */
 197                 struct lpfc_rdp_context *rdp;   /* Used in get_rdp_info */
 198                 struct lpfc_lcb_context *lcb;   /* Used in set_beacon */
 199                 struct completion *mbox_wait;   /* Used in issue_mbox_wait */
 200                 struct bsg_job_data *dd_data;   /* Used in bsg_issue_mbox_cmpl
 201                                                  * and
 202                                                  * bsg_issue_mbox_ext_handle_job
 203                                                  */
 204                 struct lpfc_iocbq *save_iocb;   /* Used in defer_plogi_acc and
 205                                                  * lpfc_mbx_cmpl_resume_rpi
 206                                                  */
 207         } ctx_u;
 208
 209         void (*mbox_cmpl) (struct lpfc_hba *, struct lpfcMboxq *);
 210         uint8_t mbox_flag;
 211         uint16_t in_ext_byte_len;
 212         uint16_t out_ext_byte_len;
 213         uint8_t  mbox_offset_word;
 214         struct lpfc_mcqe mcqe;
 215         struct lpfc_mbx_nembed_sge_virt *sge_array;
 216 } LPFC_MBOXQ_t;
 217
 218 #define MBX_POLL        1       /* poll mailbox till command done, then
 219                                    return */
 220 #define MBX_NOWAIT      2       /* issue command then return immediately */
 221
 222 #define LPFC_MAX_RING_MASK  5   /* max num of rctl/type masks allowed per
 223                                    ring */
 224 #define LPFC_SLI3_MAX_RING  4   /* Max num of SLI3 rings used by driver.
 225                                    For SLI4, an additional ring for each
 226                                    FCP WQ will be allocated.  */
 227
 228 struct lpfc_sli_ring;
 229
 230 struct lpfc_sli_ring_mask {
 231         uint8_t profile;        /* profile associated with ring */
 232         uint8_t rctl;   /* rctl / type pair configured for ring */
 233         uint8_t type;   /* rctl / type pair configured for ring */
 234         uint8_t rsvd;
 235         /* rcv'd unsol event */
 236         void (*lpfc_sli_rcv_unsol_event) (struct lpfc_hba *,
 237                                          struct lpfc_sli_ring *,
 238                                          struct lpfc_iocbq *);
 239 };
 240
 241
 242 /* Structure used to hold SLI statistical counters and info */
 243 struct lpfc_sli_ring_stat {
 244         uint64_t iocb_event;     /* IOCB event counters */
 245         uint64_t iocb_cmd;       /* IOCB cmd issued */
 246         uint64_t iocb_rsp;       /* IOCB rsp received */
 247         uint64_t iocb_cmd_delay; /* IOCB cmd ring delay */
 248         uint64_t iocb_cmd_full;  /* IOCB cmd ring full */
 249         uint64_t iocb_cmd_empty; /* IOCB cmd ring is now empty */
 250         uint64_t iocb_rsp_full;  /* IOCB rsp ring full */
 251 };
 252
 253 struct lpfc_sli3_ring {
 254         uint32_t local_getidx;  /* last available cmd index (from cmdGetInx) */
 255         uint32_t next_cmdidx;   /* next_cmd index */
 256         uint32_t rspidx;        /* current index in response ring */
 257         uint32_t cmdidx;        /* current index in command ring */
 258         uint16_t numCiocb;      /* number of command iocb's per ring */
 259         uint16_t numRiocb;      /* number of rsp iocb's per ring */
 260         uint16_t sizeCiocb;     /* Size of command iocb's in this ring */
 261         uint16_t sizeRiocb;     /* Size of response iocb's in this ring */
 262         uint32_t *cmdringaddr;  /* virtual address for cmd rings */
 263         uint32_t *rspringaddr;  /* virtual address for rsp rings */
 264 };
 265
 266 struct lpfc_sli4_ring {
 267         struct lpfc_queue *wqp; /* Pointer to associated WQ */
 268 };
 269
 270
 271 /* Structure used to hold SLI ring information */
 272 struct lpfc_sli_ring {
 273         uint16_t flag;          /* ring flags */
 274 #define LPFC_DEFERRED_RING_EVENT 0x001  /* Deferred processing a ring event */
 275 #define LPFC_CALL_RING_AVAILABLE 0x002  /* indicates cmd was full */
 276 #define LPFC_STOP_IOCB_EVENT     0x020  /* Stop processing IOCB cmds event */
 277         uint16_t abtsiotag;     /* tracks next iotag to use for ABTS */
 278
 279         uint8_t rsvd;
 280         uint8_t ringno;         /* ring number */
 281
 282         spinlock_t ring_lock;   /* lock for issuing commands */
 283
 284         uint32_t fast_iotag;    /* max fastlookup based iotag           */
 285         uint32_t iotag_ctr;     /* keeps track of the next iotag to use */
 286         uint32_t iotag_max;     /* max iotag value to use               */
 287         struct list_head txq;
 288         uint16_t txq_cnt;       /* current length of queue */
 289         uint16_t txq_max;       /* max length */
 290         struct list_head txcmplq;
 291         uint16_t txcmplq_cnt;   /* current length of queue */
 292         uint16_t txcmplq_max;   /* max length */
 293         uint32_t missbufcnt;    /* keep track of buffers to post */
 294         struct list_head postbufq;
 295         uint16_t postbufq_cnt;  /* current length of queue */
 296         uint16_t postbufq_max;  /* max length */
 297         struct list_head iocb_continueq;
 298         uint16_t iocb_continueq_cnt;    /* current length of queue */
 299         uint16_t iocb_continueq_max;    /* max length */
 300         struct list_head iocb_continue_saveq;
 301
 302         struct lpfc_sli_ring_mask prt[LPFC_MAX_RING_MASK];
 303         uint32_t num_mask;      /* number of mask entries in prt array */
 304         void (*lpfc_sli_rcv_async_status) (struct lpfc_hba *,
 305                 struct lpfc_sli_ring *, struct lpfc_iocbq *);
 306
 307         struct lpfc_sli_ring_stat stats;        /* SLI statistical info */
 308
 309         /* cmd ring available */
 310         void (*lpfc_sli_cmd_available) (struct lpfc_hba *,
 311                                         struct lpfc_sli_ring *);
 312         union {
 313                 struct lpfc_sli3_ring sli3;
 314                 struct lpfc_sli4_ring sli4;
 315         } sli;
 316 };
 317
 318 /* Structure used for configuring rings to a specific profile or rctl / type */
 319 struct lpfc_hbq_init {
 320         uint32_t rn;            /* Receive buffer notification */
 321         uint32_t entry_count;   /* max # of entries in HBQ */
 322         uint32_t headerLen;     /* 0 if not profile 4 or 5 */
 323         uint32_t logEntry;      /* Set to 1 if this HBQ used for LogEntry */
 324         uint32_t profile;       /* Selection profile 0=all, 7=logentry */
 325         uint32_t ring_mask;     /* Binds HBQ to a ring e.g. Ring0=b0001,
 326                                  * ring2=b0100 */
 327         uint32_t hbq_index;     /* index of this hbq in ring .HBQs[] */
 328
 329         uint32_t seqlenoff;
 330         uint32_t maxlen;
 331         uint32_t seqlenbcnt;
 332         uint32_t cmdcodeoff;
 333         uint32_t cmdmatch[8];
 334         uint32_t mask_count;    /* number of mask entries in prt array */
 335         struct hbq_mask hbqMasks[6];
 336
 337         /* Non-config rings fields to keep track of buffer allocations */
 338         uint32_t buffer_count;  /* number of buffers allocated */
 339         uint32_t init_count;    /* number to allocate when initialized */
 340         uint32_t add_count;     /* number to allocate when starved */
 341 } ;
 342
 343 /* Structure used to hold SLI statistical counters and info */
 344 struct lpfc_sli_stat {
 345         uint64_t mbox_stat_err;  /* Mbox cmds completed status error */
 346         uint64_t mbox_cmd;       /* Mailbox commands issued */
 347         uint64_t sli_intr;       /* Count of Host Attention interrupts */
 348         uint64_t sli_prev_intr;  /* Previous cnt of Host Attention interrupts */
 349         uint64_t sli_ips;        /* Host Attention interrupts per sec */
 350         uint32_t err_attn_event; /* Error Attn event counters */
 351         uint32_t link_event;     /* Link event counters */
 352         uint32_t mbox_event;     /* Mailbox event counters */
 353         uint32_t mbox_busy;      /* Mailbox cmd busy */
 354 };
 355
 356 /* Structure to store link status values when port stats are reset */
 357 struct lpfc_lnk_stat {
 358         uint32_t link_failure_count;
 359         uint32_t loss_of_sync_count;
 360         uint32_t loss_of_signal_count;
 361         uint32_t prim_seq_protocol_err_count;
 362         uint32_t invalid_tx_word_count;
 363         uint32_t invalid_crc_count;
 364         uint32_t error_frames;
 365         uint32_t link_events;
 366 };
 367
 368 /* Structure used to hold SLI information */
 369 struct lpfc_sli {
 370         uint32_t num_rings;
 371         uint32_t sli_flag;
 372
 373         /* Additional sli_flags */
 374 #define LPFC_SLI_MBOX_ACTIVE      0x100 /* HBA mailbox is currently active */
 375 #define LPFC_SLI_ACTIVE           0x200 /* SLI in firmware is active */
 376 #define LPFC_PROCESS_LA           0x400 /* Able to process link attention */
 377 #define LPFC_BLOCK_MGMT_IO        0x800 /* Don't allow mgmt mbx or iocb cmds */
 378 #define LPFC_SLI_ASYNC_MBX_BLK    0x2000 /* Async mailbox is blocked */
 379 #define LPFC_SLI_SUPPRESS_RSP     0x4000 /* Suppress RSP feature is supported */
 380 #define LPFC_SLI_USE_EQDR         0x8000 /* EQ Delay Register is supported */
 381 #define LPFC_QUEUE_FREE_INIT      0x10000 /* Queue freeing is in progress */
 382 #define LPFC_QUEUE_FREE_WAIT      0x20000 /* Hold Queue free as it is being
 383                                            * used outside worker thread
 384                                            */
 385
 386         struct lpfc_sli_ring *sli3_ring;
 387
 388         struct lpfc_sli_stat slistat;   /* SLI statistical info */
 389         struct list_head mboxq;
 390         uint16_t mboxq_cnt;     /* current length of queue */
 391         uint16_t mboxq_max;     /* max length */
 392         LPFC_MBOXQ_t *mbox_active;      /* active mboxq information */
 393         struct list_head mboxq_cmpl;
 394
 395         struct timer_list mbox_tmo;     /* Hold clk to timeout active mbox
 396                                            cmd */
 397
 398 #define LPFC_IOCBQ_LOOKUP_INCREMENT  1024
 399         struct lpfc_iocbq ** iocbq_lookup; /* array to lookup IOCB by IOTAG */
 400         size_t iocbq_lookup_len;           /* current lengs of the array */
 401         uint16_t  last_iotag;              /* last allocated IOTAG */
 402         time64_t  stats_start;             /* in seconds */
 403         struct lpfc_lnk_stat lnk_stat_offsets;
 404 };
 405
 406 /* Timeout for normal outstanding mbox command (Seconds) */
 407 #define LPFC_MBOX_TMO                           30
 408 /* Timeout for non-flash-based outstanding sli_config mbox command (Seconds) */
 409 #define LPFC_MBOX_SLI4_CONFIG_TMO               60
 410 /* Timeout for flash-based outstanding sli_config mbox command (Seconds) */
 411 #define LPFC_MBOX_SLI4_CONFIG_EXTENDED_TMO      300
 412 /* Timeout for other flash-based outstanding mbox command (Seconds) */
 413 #define LPFC_MBOX_TMO_FLASH_CMD                 300
 414
 415 struct lpfc_io_buf {
 416         /* Common fields */
 417         struct list_head list;
 418         void *data;
 419
 420         dma_addr_t dma_handle;
 421         dma_addr_t dma_phys_sgl;
 422
 423         struct sli4_sge *dma_sgl; /* initial segment chunk */
 424
 425         /* linked list of extra sli4_hybrid_sge */
 426         struct list_head dma_sgl_xtra_list;
 427
 428         /* list head for fcp_cmd_rsp buf */
 429         struct list_head dma_cmd_rsp_list;
 430
 431         struct lpfc_iocbq cur_iocbq;
 432         struct lpfc_sli4_hdw_queue *hdwq;
 433         uint16_t hdwq_no;
 434         uint16_t cpu;
 435
 436         struct lpfc_nodelist *ndlp;
 437         uint32_t timeout;
 438         uint16_t flags;
 439 #define LPFC_SBUF_XBUSY         0x1     /* SLI4 hba reported XB on WCQE cmpl */
 440 #define LPFC_SBUF_BUMP_QDEPTH   0x2     /* bumped queue depth counter */
 441                                         /* External DIF device IO conversions */
 442 #define LPFC_SBUF_NORMAL_DIF    0x4     /* normal mode to insert/strip */
 443 #define LPFC_SBUF_PASS_DIF      0x8     /* insert/strip mode to passthru */
 444 #define LPFC_SBUF_NOT_POSTED    0x10    /* SGL failed post to FW. */
 445         uint16_t status;        /* From IOCB Word 7- ulpStatus */
 446         uint32_t result;        /* From IOCB Word 4. */
 447
 448         uint32_t   seg_cnt;     /* Number of scatter-gather segments returned by
 449                                  * dma_map_sg.  The driver needs this for calls
 450                                  * to dma_unmap_sg.
 451                                  */
 452         unsigned long start_time;
 453         spinlock_t buf_lock;    /* lock used in case of simultaneous abort */
 454         bool expedite;          /* this is an expedite io_buf */
 455
 456         union {
 457                 /* SCSI specific fields */
 458                 struct {
 459                         struct scsi_cmnd *pCmd;
 460                         struct lpfc_rport_data *rdata;
 461                         uint32_t prot_seg_cnt;  /* seg_cnt's counterpart for
 462                                                  * protection data
 463                                                  */
 464
 465                         /*
 466                          * data and dma_handle are the kernel virtual and bus
 467                          * address of the dma-able buffer containing the
 468                          * fcp_cmd, fcp_rsp and a scatter gather bde list that
 469                          * supports the sg_tablesize value.
 470                          */
 471                         struct fcp_cmnd *fcp_cmnd;
 472                         struct fcp_rsp *fcp_rsp;
 473
 474                         wait_queue_head_t *waitq;
 475
 476 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
 477                         /* Used to restore any changes to protection data for
 478                          * error injection
 479                          */
 480                         void *prot_data_segment;
 481                         uint32_t prot_data;
 482                         uint32_t prot_data_type;
 483 #define LPFC_INJERR_REFTAG      1
 484 #define LPFC_INJERR_APPTAG      2
 485 #define LPFC_INJERR_GUARD       3
 486 #endif
 487                 };
 488
 489                 /* NVME specific fields */
 490                 struct {
 491                         struct nvmefc_fcp_req *nvmeCmd;
 492                         uint16_t qidx;
 493                 };
 494         };
 495 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
 496         uint64_t ts_cmd_start;
 497         uint64_t ts_last_cmd;
 498         uint64_t ts_cmd_wqput;
 499         uint64_t ts_isr_cmpl;
 500         uint64_t ts_data_io;
 501 #endif
 502         uint64_t rx_cmd_start;
 503 };