1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2004-2016 Emulex. All rights reserved. *
5 * EMULEX and SLI are trademarks of Emulex. *
7 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
9 * This program is free software; you can redistribute it and/or *
10 * modify it under the terms of version 2 of the GNU General *
11 * Public License as published by the Free Software Foundation. *
12 * This program is distributed in the hope that it will be useful. *
13 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
14 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
15 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
16 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
17 * TO BE LEGALLY INVALID. See the GNU General Public License for *
18 * more details, a copy of which can be found in the file COPYING *
19 * included with this package. *
20 ********************************************************************/
22 #define LPFC_NVME_MIN_SEGS 16
23 #define LPFC_NVME_DEFAULT_SEGS 66 /* 256K IOs - 64 + 2 */
24 #define LPFC_NVME_MAX_SEGS 510
25 #define LPFC_NVMET_MIN_POSTBUF 16
26 #define LPFC_NVMET_DEFAULT_POSTBUF 1024
27 #define LPFC_NVMET_MAX_POSTBUF 4096
28 #define LPFC_NVME_WQSIZE 256
30 #define LPFC_NVME_ERSP_LEN 0x20
32 struct lpfc_nvme_qhandle
{
33 uint32_t index
; /* WQ index to use */
34 uint32_t qidx
; /* queue index passed to create */
35 uint32_t cpu_id
; /* current cpu id at time of create */
38 /* Declare nvme-based local and remote port definitions. */
39 struct lpfc_nvme_lport
{
40 struct lpfc_vport
*vport
;
41 struct list_head rport_list
;
42 struct completion lport_unreg_done
;
43 /* Add sttats counters here */
46 struct lpfc_nvme_rport
{
47 struct list_head list
;
48 struct lpfc_nvme_lport
*lport
;
49 struct nvme_fc_remote_port
*remoteport
;
50 struct lpfc_nodelist
*ndlp
;
51 struct completion rport_unreg_done
;
54 struct lpfc_nvme_buf
{
55 struct list_head list
;
56 struct nvmefc_fcp_req
*nvmeCmd
;
57 struct lpfc_nvme_rport
*nrport
;
61 uint16_t flags
; /* TBD convert exch_busy to flags */
62 #define LPFC_SBUF_XBUSY 0x1 /* SLI4 hba reported XB on WCQE cmpl */
63 uint16_t exch_busy
; /* SLI4 hba reported XB on complete WCQE */
64 uint16_t status
; /* From IOCB Word 7- ulpStatus */
68 uint32_t result
; /* From IOCB Word 4. */
70 uint32_t seg_cnt
; /* Number of scatter-gather segments returned by
71 * dma_map_sg. The driver needs this for calls
74 dma_addr_t nonsg_phys
; /* Non scatter-gather physical address. */
77 * data and dma_handle are the kernel virtual and bus address of the
78 * dma-able buffer containing the fcp_cmd, fcp_rsp and a scatter
79 * gather bde list that supports the sg_tablesize value.
82 dma_addr_t dma_handle
;
84 struct sli4_sge
*nvme_sgl
;
85 dma_addr_t dma_phys_sgl
;
87 /* cur_iocbq has phys of the dma-able buffer.
90 struct lpfc_iocbq cur_iocbq
;
92 wait_queue_head_t
*waitq
;
93 unsigned long start_time
;