drivers/scsi/lpfc/lpfc_nvmet.h

   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 */
  29 struct 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 xmt_fcp_release;
  53
  54         /* Stats counters - lpfc_nvmet_xmt_fcp_op */
  55         atomic_t xmt_fcp_drop;
  56         atomic_t xmt_fcp_read_rsp;
  57         atomic_t xmt_fcp_read;
  58         atomic_t xmt_fcp_write;
  59         atomic_t xmt_fcp_rsp;
  60
  61         /* Stats counters - lpfc_nvmet_xmt_fcp_op_cmp */
  62         atomic_t xmt_fcp_rsp_cmpl;
  63         atomic_t xmt_fcp_rsp_error;
  64         atomic_t xmt_fcp_rsp_drop;
  65
  66
  67         /* Stats counters - lpfc_nvmet_xmt_fcp_abort */
  68         atomic_t xmt_fcp_abort;
  69         atomic_t xmt_fcp_abort_cmpl;
  70         atomic_t xmt_abort_sol;
  71         atomic_t xmt_abort_unsol;
  72         atomic_t xmt_abort_rsp;
  73         atomic_t xmt_abort_rsp_error;
  74 };
  75
  76 struct lpfc_nvmet_rcv_ctx {
  77         union {
  78                 struct nvmefc_tgt_ls_req ls_req;
  79                 struct nvmefc_tgt_fcp_req fcp_req;
  80         } ctx;
  81         struct list_head list;
  82         struct lpfc_hba *phba;
  83         struct lpfc_iocbq *wqeq;
  84         struct lpfc_iocbq *abort_wqeq;
  85         dma_addr_t txrdy_phys;
  86         spinlock_t ctxlock; /* protect flag access */
  87         uint32_t *txrdy;
  88         uint32_t sid;
  89         uint32_t offset;
  90         uint16_t oxid;
  91         uint16_t size;
  92         uint16_t entry_cnt;
  93         uint16_t cpu;
  94         uint16_t state;
  95         /* States */
  96 #define LPFC_NVMET_STE_LS_RCV           1
  97 #define LPFC_NVMET_STE_LS_ABORT         2
  98 #define LPFC_NVMET_STE_LS_RSP           3
  99 #define LPFC_NVMET_STE_RCV              4
 100 #define LPFC_NVMET_STE_DATA             5
 101 #define LPFC_NVMET_STE_ABORT            6
 102 #define LPFC_NVMET_STE_DONE             7
 103 #define LPFC_NVMET_STE_FREE             0xff
 104         uint16_t flag;
 105 #define LPFC_NVMET_IO_INP               0x1  /* IO is in progress on exchange */
 106 #define LPFC_NVMET_ABORT_OP             0x2  /* Abort WQE issued on exchange */
 107 #define LPFC_NVMET_XBUSY                0x4  /* XB bit set on IO cmpl */
 108 #define LPFC_NVMET_CTX_RLS              0x8  /* ctx free requested */
 109 #define LPFC_NVMET_ABTS_RCV             0x10  /* ABTS received on exchange */
 110         struct rqb_dmabuf *rqb_buffer;
 111         struct lpfc_nvmet_ctxbuf *ctxbuf;
 112
 113 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
 114         uint64_t ts_isr_cmd;
 115         uint64_t ts_cmd_nvme;
 116         uint64_t ts_nvme_data;
 117         uint64_t ts_data_wqput;
 118         uint64_t ts_isr_data;
 119         uint64_t ts_data_nvme;
 120         uint64_t ts_nvme_status;
 121         uint64_t ts_status_wqput;
 122         uint64_t ts_isr_status;
 123         uint64_t ts_status_nvme;
 124 #endif
 125 };