1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright 2008 Cisco Systems, Inc. All rights reserved.
4 * Copyright 2007 Nuova Systems, Inc. All rights reserved.
5 */
6#ifndef _FNIC_IO_H_
7#define _FNIC_IO_H_
8
9#include <scsi/fc/fc_fcp.h>
10
11#define FNIC_DFLT_SG_DESC_CNT 32
12#define FNIC_MAX_SG_DESC_CNT 256 /* Maximum descriptors per sgl */
13#define FNIC_SG_DESC_ALIGN 16 /* Descriptor address alignment */
14
15struct host_sg_desc {
16 __le64 addr;
17 __le32 len;
18 u32 _resvd;
19};
20
21struct fnic_dflt_sgl_list {
22 struct host_sg_desc sg_desc[FNIC_DFLT_SG_DESC_CNT];
23};
24
25struct fnic_sgl_list {
26 struct host_sg_desc sg_desc[FNIC_MAX_SG_DESC_CNT];
27};
28
29enum fnic_sgl_list_type {
30 FNIC_SGL_CACHE_DFLT = 0, /* cache with default size sgl */
31 FNIC_SGL_CACHE_MAX, /* cache with max size sgl */
32 FNIC_SGL_NUM_CACHES /* number of sgl caches */
33};
34
35enum fnic_ioreq_state {
36 FNIC_IOREQ_NOT_INITED = 0,
37 FNIC_IOREQ_CMD_PENDING,
38 FNIC_IOREQ_ABTS_PENDING,
39 FNIC_IOREQ_ABTS_COMPLETE,
40 FNIC_IOREQ_CMD_COMPLETE,
41};
42
43struct fnic_io_req {
44 struct host_sg_desc *sgl_list; /* sgl list */
45 void *sgl_list_alloc; /* sgl list address used for free */
46 dma_addr_t sense_buf_pa; /* dma address for sense buffer*/
47 dma_addr_t sgl_list_pa; /* dma address for sgl list */
48 u16 sgl_cnt;
49 u8 sgl_type; /* device DMA descriptor list type */
50 u8 io_completed:1; /* set to 1 when fw completes IO */
51 u32 port_id; /* remote port DID */
52 unsigned long start_time; /* in jiffies */
53 struct completion *abts_done; /* completion for abts */
54 struct completion *dr_done; /* completion for device reset */
55 unsigned int tag;
56 struct scsi_cmnd *sc; /* midlayer's cmd pointer */
57};
58
59enum fnic_port_speeds {
60 DCEM_PORTSPEED_NONE = 0,
61 DCEM_PORTSPEED_1G = 1000,
62 DCEM_PORTSPEED_10G = 10000,
63 DCEM_PORTSPEED_20G = 20000,
64 DCEM_PORTSPEED_25G = 25000,
65 DCEM_PORTSPEED_40G = 40000,
66 DCEM_PORTSPEED_4x10G = 41000,
67 DCEM_PORTSPEED_100G = 100000,
68};
69#endif /* _FNIC_IO_H_ */
70

source code of linux/drivers/scsi/fnic/fnic_io.h