blob: f0b896988cd50445264257e4dfe56e863fb0bcbe [file] [log] [blame]
Abhijeet Joglekar5df6d732009-04-17 18:33:26 -07001/*
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 1024 /* 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_CMD_PENDING = 0,
49 FNIC_IOREQ_ABTS_PENDING,
50 FNIC_IOREQ_ABTS_COMPLETE,
51 FNIC_IOREQ_CMD_COMPLETE,
52};
53
54struct fnic_io_req {
55 struct host_sg_desc *sgl_list; /* sgl list */
56 void *sgl_list_alloc; /* sgl list address used for free */
57 dma_addr_t sense_buf_pa; /* dma address for sense buffer*/
58 dma_addr_t sgl_list_pa; /* dma address for sgl list */
59 u16 sgl_cnt;
60 u8 sgl_type; /* device DMA descriptor list type */
61 u8 io_completed:1; /* set to 1 when fw completes IO */
62 u32 port_id; /* remote port DID */
63 struct completion *abts_done; /* completion for abts */
64 struct completion *dr_done; /* completion for device reset */
65};
66
67#endif /* _FNIC_IO_H_ */