drivers/scsi/lpfc/lpfc_nvme.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_NVME_DEFAULT_SEGS          (64 + 1)        /* 256K IOs */
  25
  26 #define LPFC_NVME_ERSP_LEN              0x20
  27
  28 #define LPFC_NVME_WAIT_TMO              10
  29 #define LPFC_NVME_EXPEDITE_XRICNT       8
  30
  31 struct lpfc_nvme_qhandle {
  32         uint32_t index;         /* WQ index to use */
  33         uint32_t qidx;          /* queue index passed to create */
  34         uint32_t cpu_id;        /* current cpu id at time of create */
  35 };
  36
  37 /* Declare nvme-based local and remote port definitions. */
  38 struct lpfc_nvme_lport {
  39         struct lpfc_vport *vport;
  40         struct completion lport_unreg_done;
  41         /* Add stats counters here */
  42         atomic_t xmt_fcp_noxri;
  43         atomic_t xmt_fcp_bad_ndlp;
  44         atomic_t xmt_fcp_qdepth;
  45         atomic_t xmt_fcp_wqerr;
  46         atomic_t xmt_fcp_abort;
  47         atomic_t xmt_ls_abort;
  48         atomic_t xmt_ls_err;
  49         atomic_t cmpl_fcp_xb;
  50         atomic_t cmpl_fcp_err;
  51         atomic_t cmpl_ls_xb;
  52         atomic_t cmpl_ls_err;
  53 };
  54
  55 struct lpfc_nvme_rport {
  56         struct lpfc_nvme_lport *lport;
  57         struct nvme_fc_remote_port *remoteport;
  58         struct lpfc_nodelist *ndlp;
  59         struct completion rport_unreg_done;
  60 };
  61
  62 struct lpfc_nvme_buf {
  63         struct list_head list;
  64         struct nvmefc_fcp_req *nvmeCmd;
  65         struct lpfc_nvme_rport *nrport;
  66         struct lpfc_nodelist *ndlp;
  67
  68         uint32_t timeout;
  69
  70         uint16_t flags;  /* TBD convert exch_busy to flags */
  71 #define LPFC_SBUF_XBUSY         0x1     /* SLI4 hba reported XB on WCQE cmpl */
  72         uint16_t exch_busy;     /* SLI4 hba reported XB on complete WCQE */
  73         uint16_t status;        /* From IOCB Word 7- ulpStatus */
  74         uint16_t cpu;
  75         uint16_t qidx;
  76         uint16_t sqid;
  77         uint32_t result;        /* From IOCB Word 4. */
  78
  79         uint32_t   seg_cnt;     /* Number of scatter-gather segments returned by
  80                                  * dma_map_sg.  The driver needs this for calls
  81                                  * to dma_unmap_sg.
  82                                  */
  83         dma_addr_t nonsg_phys;  /* Non scatter-gather physical address. */
  84
  85         /*
  86          * data and dma_handle are the kernel virtual and bus address of the
  87          * dma-able buffer containing the fcp_cmd, fcp_rsp and a scatter
  88          * gather bde list that supports the sg_tablesize value.
  89          */
  90         void *data;
  91         dma_addr_t dma_handle;
  92
  93         struct sli4_sge *nvme_sgl;
  94         dma_addr_t dma_phys_sgl;
  95
  96         /* cur_iocbq has phys of the dma-able buffer.
  97          * Iotag is in here
  98          */
  99         struct lpfc_iocbq cur_iocbq;
 100
 101         wait_queue_head_t *waitq;
 102         unsigned long start_time;
 103 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
 104         uint64_t ts_cmd_start;
 105         uint64_t ts_last_cmd;
 106         uint64_t ts_cmd_wqput;
 107         uint64_t ts_isr_cmpl;
 108         uint64_t ts_data_nvme;
 109 #endif
 110 };
 111
 112 struct lpfc_nvme_fcpreq_priv {
 113         struct lpfc_nvme_buf *nvme_buf;
 114 };