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
27 struct host_sg_desc {
28 __le64 addr;
29 __le32 len;
30 u32 _resvd;
31 };
32
33 struct fnic_dflt_sgl_list {
34 struct host_sg_desc sg_desc[FNIC_DFLT_SG_DESC_CNT];
35 };
36
37 struct fnic_sgl_list {
38 struct host_sg_desc sg_desc[FNIC_MAX_SG_DESC_CNT];
39 };
40
41 enum 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
47 enum 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
55 struct 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 enum fnic_port_speeds {
70 DCEM_PORTSPEED_NONE = 0,
71 DCEM_PORTSPEED_1G = 1000,
72 DCEM_PORTSPEED_10G = 10000,
73 DCEM_PORTSPEED_20G = 20000,
74 DCEM_PORTSPEED_25G = 25000,
75 DCEM_PORTSPEED_40G = 40000,
76 DCEM_PORTSPEED_4x10G = 41000,
77 DCEM_PORTSPEED_100G = 100000,
78 };
79 #endif /* _FNIC_IO_H_ */