fnic_io.h

 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#include "fnic_fdls.h"
11
12#define FNIC_DFLT_SG_DESC_CNT  32
13#define FNIC_MAX_SG_DESC_CNT        256     /* Maximum descriptors per sgl */
14#define FNIC_SG_DESC_ALIGN          16      /* Descriptor address alignment */
15
16struct host_sg_desc {
17	__le64 addr;
18	__le32 len;
19	u32 _resvd;
20};
21
22struct fnic_dflt_sgl_list {
23	struct host_sg_desc sg_desc[FNIC_DFLT_SG_DESC_CNT];
24};
25
26struct fnic_sgl_list {
27	struct host_sg_desc sg_desc[FNIC_MAX_SG_DESC_CNT];
28};
29
30enum fnic_sgl_list_type {
31	FNIC_SGL_CACHE_DFLT = 0,  /* cache with default size sgl */
32	FNIC_SGL_CACHE_MAX,       /* cache with max size sgl */
33	FNIC_SGL_NUM_CACHES       /* number of sgl caches */
34};
35
36enum fnic_ioreq_state {
37	FNIC_IOREQ_NOT_INITED = 0,
38	FNIC_IOREQ_CMD_PENDING,
39	FNIC_IOREQ_ABTS_PENDING,
40	FNIC_IOREQ_ABTS_COMPLETE,
41	FNIC_IOREQ_CMD_COMPLETE,
42};
43
44struct fnic_io_req {
45	struct fnic_iport_s *iport;
46	struct fnic_tport_s *tport;
47	struct host_sg_desc *sgl_list; /* sgl list */
48	void *sgl_list_alloc; /* sgl list address used for free */
49	dma_addr_t sense_buf_pa; /* dma address for sense buffer*/
50	dma_addr_t sgl_list_pa;	/* dma address for sgl list */
51	u16 sgl_cnt;
52	u8 sgl_type; /* device DMA descriptor list type */
53	u8 io_completed:1; /* set to 1 when fw completes IO */
54	u32 port_id; /* remote port DID */
55	unsigned long start_time; /* in jiffies */
56	struct completion *abts_done; /* completion for abts */
57	struct completion *dr_done; /* completion for device reset */
58	unsigned int tag;
59	struct scsi_cmnd *sc; /* midlayer's cmd pointer */
60};
61#endif /* _FNIC_IO_H_ */