1/*
2 * Copyright 2008 Cisco Systems, Inc.  All rights reserved.
3 * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
4 *
5 * This program is free software; you may redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; version 2 of the License.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
10 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
11 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
12 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
13 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
14 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
15 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
16 * SOFTWARE.
17 */
18#ifndef _FNIC_IO_H_
19#define _FNIC_IO_H_
20
21#include <scsi/fc/fc_fcp.h>
22
23#define FNIC_DFLT_SG_DESC_CNT  32
24#define FNIC_MAX_SG_DESC_CNT        256     /* Maximum descriptors per sgl */
25#define FNIC_SG_DESC_ALIGN          16      /* Descriptor address alignment */
26
27struct host_sg_desc {
28	__le64 addr;
29	__le32 len;
30	u32 _resvd;
31};
32
33struct fnic_dflt_sgl_list {
34	struct host_sg_desc sg_desc[FNIC_DFLT_SG_DESC_CNT];
35};
36
37struct fnic_sgl_list {
38	struct host_sg_desc sg_desc[FNIC_MAX_SG_DESC_CNT];
39};
40
41enum fnic_sgl_list_type {
42	FNIC_SGL_CACHE_DFLT = 0,  /* cache with default size sgl */
43	FNIC_SGL_CACHE_MAX,       /* cache with max size sgl */
44	FNIC_SGL_NUM_CACHES       /* number of sgl caches */
45};
46
47enum fnic_ioreq_state {
48	FNIC_IOREQ_NOT_INITED = 0,
49	FNIC_IOREQ_CMD_PENDING,
50	FNIC_IOREQ_ABTS_PENDING,
51	FNIC_IOREQ_ABTS_COMPLETE,
52	FNIC_IOREQ_CMD_COMPLETE,
53};
54
55struct fnic_io_req {
56	struct host_sg_desc *sgl_list; /* sgl list */
57	void *sgl_list_alloc; /* sgl list address used for free */
58	dma_addr_t sense_buf_pa; /* dma address for sense buffer*/
59	dma_addr_t sgl_list_pa;	/* dma address for sgl list */
60	u16 sgl_cnt;
61	u8 sgl_type; /* device DMA descriptor list type */
62	u8 io_completed:1; /* set to 1 when fw completes IO */
63	u32 port_id; /* remote port DID */
64	unsigned long start_time; /* in jiffies */
65	struct completion *abts_done; /* completion for abts */
66	struct completion *dr_done; /* completion for device reset */
67};
68
69#endif /* _FNIC_IO_H_ */
70