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. *
9 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
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 ********************************************************************/
24 #define LPFC_NVME_MIN_SEGS 16
25 #define LPFC_NVME_DEFAULT_SEGS 66 /* 256K IOs - 64 + 2 */
26 #define LPFC_NVME_MAX_SEGS 510
27 #define LPFC_NVMET_MIN_POSTBUF 16
28 #define LPFC_NVMET_DEFAULT_POSTBUF 1024
29 #define LPFC_NVMET_MAX_POSTBUF 4096
30 #define LPFC_NVME_WQSIZE 256
32 #define LPFC_NVME_ERSP_LEN 0x20
34 struct lpfc_nvme_qhandle
{
35 uint32_t index
; /* WQ index to use */
36 uint32_t qidx
; /* queue index passed to create */
37 uint32_t cpu_id
; /* current cpu id at time of create */
40 /* Declare nvme-based local and remote port definitions. */
41 struct lpfc_nvme_lport
{
42 struct lpfc_vport
*vport
;
43 struct list_head rport_list
;
44 struct completion lport_unreg_done
;
45 /* Add sttats counters here */
48 struct lpfc_nvme_rport
{
49 struct list_head list
;
50 struct lpfc_nvme_lport
*lport
;
51 struct nvme_fc_remote_port
*remoteport
;
52 struct lpfc_nodelist
*ndlp
;
53 struct completion rport_unreg_done
;
56 struct lpfc_nvme_buf
{
57 struct list_head list
;
58 struct nvmefc_fcp_req
*nvmeCmd
;
59 struct lpfc_nvme_rport
*nrport
;
60 struct lpfc_nodelist
*ndlp
;
64 uint16_t flags
; /* TBD convert exch_busy to flags */
65 #define LPFC_SBUF_XBUSY 0x1 /* SLI4 hba reported XB on WCQE cmpl */
66 uint16_t exch_busy
; /* SLI4 hba reported XB on complete WCQE */
67 uint16_t status
; /* From IOCB Word 7- ulpStatus */
71 uint32_t result
; /* From IOCB Word 4. */
73 uint32_t seg_cnt
; /* Number of scatter-gather segments returned by
74 * dma_map_sg. The driver needs this for calls
77 dma_addr_t nonsg_phys
; /* Non scatter-gather physical address. */
80 * data and dma_handle are the kernel virtual and bus address of the
81 * dma-able buffer containing the fcp_cmd, fcp_rsp and a scatter
82 * gather bde list that supports the sg_tablesize value.
85 dma_addr_t dma_handle
;
87 struct sli4_sge
*nvme_sgl
;
88 dma_addr_t dma_phys_sgl
;
90 /* cur_iocbq has phys of the dma-able buffer.
93 struct lpfc_iocbq cur_iocbq
;
95 wait_queue_head_t
*waitq
;
96 unsigned long start_time
;
97 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
98 uint64_t ts_cmd_start
;
100 uint64_t ts_cmd_wqput
;
101 uint64_t ts_isr_cmpl
;
102 uint64_t ts_data_nvme
;