LXR linux/drivers/scsi/lpfc/lpfc

   1/*******************************************************************
   2 * This file is part of the Emulex Linux Device Driver for         *
   3 * Fibre Channel Host Bus Adapters.                                *
   4 * Copyright (C) 2017 Broadcom. All Rights Reserved. The term      *
   5 * “Broadcom” refers to Broadcom Limited and/or its subsidiaries.  *
   6 * Copyright (C) 2004-2016 Emulex.  All rights reserved.           *
   7 * EMULEX and SLI are trademarks of Emulex.                        *
   8 * www.broadcom.com                                                *
   9 * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
  10 *                                                                 *
  11 * This program is free software; you can redistribute it and/or   *
  12 * modify it under the terms of version 2 of the GNU General       *
  13 * Public License as published by the Free Software Foundation.    *
  14 * This program is distributed in the hope that it will be useful. *
  15 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  16 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  17 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  18 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  19 * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  20 * more details, a copy of which can be found in the file COPYING  *
  21 * included with this package.                                     *
  22 ********************************************************************/
  23
  24#define LPFC_NVMET_DEFAULT_SEGS         (64 + 1)        /* 256K IOs */
  25#define LPFC_NVMET_RQE_DEF_COUNT        512
  26#define LPFC_NVMET_SUCCESS_LEN  12
  27
  28/* Used for NVME Target */
  29struct lpfc_nvmet_tgtport {
  30        struct lpfc_hba *phba;
  31        struct completion tport_unreg_done;
  32
  33        /* Stats counters - lpfc_nvmet_unsol_ls_buffer */
  34        atomic_t rcv_ls_req_in;
  35        atomic_t rcv_ls_req_out;
  36        atomic_t rcv_ls_req_drop;
  37        atomic_t xmt_ls_abort;
  38        atomic_t xmt_ls_abort_cmpl;
  39
  40        /* Stats counters - lpfc_nvmet_xmt_ls_rsp */
  41        atomic_t xmt_ls_rsp;
  42        atomic_t xmt_ls_drop;
  43
  44        /* Stats counters - lpfc_nvmet_xmt_ls_rsp_cmp */
  45        atomic_t xmt_ls_rsp_error;
  46        atomic_t xmt_ls_rsp_cmpl;
  47
  48        /* Stats counters - lpfc_nvmet_unsol_fcp_buffer */
  49        atomic_t rcv_fcp_cmd_in;
  50        atomic_t rcv_fcp_cmd_out;
  51        atomic_t rcv_fcp_cmd_drop;
  52        atomic_t rcv_fcp_cmd_defer;
  53        atomic_t xmt_fcp_release;
  54
  55        /* Stats counters - lpfc_nvmet_xmt_fcp_op */
  56        atomic_t xmt_fcp_drop;
  57        atomic_t xmt_fcp_read_rsp;
  58        atomic_t xmt_fcp_read;
  59        atomic_t xmt_fcp_write;
  60        atomic_t xmt_fcp_rsp;
  61
  62        /* Stats counters - lpfc_nvmet_xmt_fcp_op_cmp */
  63        atomic_t xmt_fcp_rsp_cmpl;
  64        atomic_t xmt_fcp_rsp_error;
  65        atomic_t xmt_fcp_rsp_drop;
  66
  67
  68        /* Stats counters - lpfc_nvmet_xmt_fcp_abort */
  69        atomic_t xmt_fcp_abort;
  70        atomic_t xmt_fcp_abort_cmpl;
  71        atomic_t xmt_abort_sol;
  72        atomic_t xmt_abort_unsol;
  73        atomic_t xmt_abort_rsp;
  74        atomic_t xmt_abort_rsp_error;
  75};
  76
  77struct lpfc_nvmet_rcv_ctx {
  78        union {
  79                struct nvmefc_tgt_ls_req ls_req;
  80                struct nvmefc_tgt_fcp_req fcp_req;
  81        } ctx;
  82        struct list_head list;
  83        struct lpfc_hba *phba;
  84        struct lpfc_iocbq *wqeq;
  85        struct lpfc_iocbq *abort_wqeq;
  86        dma_addr_t txrdy_phys;
  87        spinlock_t ctxlock; /* protect flag access */
  88        uint32_t *txrdy;
  89        uint32_t sid;
  90        uint32_t offset;
  91        uint16_t oxid;
  92        uint16_t size;
  93        uint16_t entry_cnt;
  94        uint16_t cpu;
  95        uint16_t state;
  96        /* States */
  97#define LPFC_NVMET_STE_LS_RCV           1
  98#define LPFC_NVMET_STE_LS_ABORT         2
  99#define LPFC_NVMET_STE_LS_RSP           3
 100#define LPFC_NVMET_STE_RCV              4
 101#define LPFC_NVMET_STE_DATA             5
 102#define LPFC_NVMET_STE_ABORT            6
 103#define LPFC_NVMET_STE_DONE             7
 104#define LPFC_NVMET_STE_FREE             0xff
 105        uint16_t flag;
 106#define LPFC_NVMET_IO_INP               0x1  /* IO is in progress on exchange */
 107#define LPFC_NVMET_ABORT_OP             0x2  /* Abort WQE issued on exchange */
 108#define LPFC_NVMET_XBUSY                0x4  /* XB bit set on IO cmpl */
 109#define LPFC_NVMET_CTX_RLS              0x8  /* ctx free requested */
 110#define LPFC_NVMET_ABTS_RCV             0x10  /* ABTS received on exchange */
 111        struct rqb_dmabuf *rqb_buffer;
 112        struct lpfc_nvmet_ctxbuf *ctxbuf;
 113
 114#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
 115        uint64_t ts_isr_cmd;
 116        uint64_t ts_cmd_nvme;
 117        uint64_t ts_nvme_data;
 118        uint64_t ts_data_wqput;
 119        uint64_t ts_isr_data;
 120        uint64_t ts_data_nvme;
 121        uint64_t ts_nvme_status;
 122        uint64_t ts_status_wqput;
 123        uint64_t ts_isr_status;
 124        uint64_t ts_status_nvme;
 125#endif
 126};
 127