1 | /* $OpenBSD: vioscsireg.h,v 1.1 2013/12/20 21:50:49 matthew Exp $ */ |
2 | /* |
3 | * Copyright (c) 2013 Google Inc. |
4 | * |
5 | * Permission to use, copy, modify, and distribute this software for any |
6 | * purpose with or without fee is hereby granted, provided that the above |
7 | * copyright notice and this permission notice appear in all copies. |
8 | * |
9 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
10 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
11 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
12 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
13 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
14 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
15 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
16 | */ |
17 | |
18 | /* Configuration registers */ |
19 | #define VIRTIO_SCSI_CONFIG_NUM_QUEUES 0 /* 32bit */ |
20 | #define VIRTIO_SCSI_CONFIG_SEG_MAX 4 /* 32bit */ |
21 | #define VIRTIO_SCSI_CONFIG_MAX_SECTORS 8 /* 32bit */ |
22 | #define VIRTIO_SCSI_CONFIG_CMD_PER_LUN 12 /* 32bit */ |
23 | #define VIRTIO_SCSI_CONFIG_EVENT_INFO_SIZE 16 /* 32bit */ |
24 | #define VIRTIO_SCSI_CONFIG_SENSE_SIZE 20 /* 32bit */ |
25 | #define VIRTIO_SCSI_CONFIG_CDB_SIZE 24 /* 32bit */ |
26 | #define VIRTIO_SCSI_CONFIG_MAX_CHANNEL 28 /* 16bit */ |
27 | #define VIRTIO_SCSI_CONFIG_MAX_TARGET 30 /* 16bit */ |
28 | #define VIRTIO_SCSI_CONFIG_MAX_LUN 32 /* 32bit */ |
29 | |
30 | /* Feature bits */ |
31 | #define VIRTIO_SCSI_F_INOUT (1<<0) |
32 | #define VIRTIO_SCSI_F_HOTPLUG (1<<1) |
33 | |
34 | /* Response status values */ |
35 | #define VIRTIO_SCSI_S_OK 0 |
36 | #define VIRTIO_SCSI_S_OVERRUN 1 |
37 | #define VIRTIO_SCSI_S_ABORTED 2 |
38 | #define VIRTIO_SCSI_S_BAD_TARGET 3 |
39 | #define VIRTIO_SCSI_S_RESET 4 |
40 | #define VIRTIO_SCSI_S_BUSY 5 |
41 | #define VIRTIO_SCSI_S_TRANSPORT_FAILURE 6 |
42 | #define VIRTIO_SCSI_S_TARGET_FAILURE 7 |
43 | #define VIRTIO_SCSI_S_NEXUS_FAILURE 8 |
44 | #define VIRTIO_SCSI_S_FAILURE 9 |
45 | |
46 | /* Task attributes */ |
47 | #define VIRTIO_SCSI_S_SIMPLE 0 |
48 | #define VIRTIO_SCSI_S_ORDERED 1 |
49 | #define VIRTIO_SCSI_S_HEAD 2 |
50 | #define VIRTIO_SCSI_S_ACA 3 |
51 | |
52 | /* Request header structure */ |
53 | struct virtio_scsi_req_hdr { |
54 | uint8_t lun[8]; |
55 | uint64_t id; |
56 | uint8_t task_attr; |
57 | uint8_t prio; |
58 | uint8_t crn; |
59 | uint8_t cdb[32]; |
60 | } __packed; |
61 | /* Followed by data-out. */ |
62 | |
63 | /* Response header structure */ |
64 | struct virtio_scsi_res_hdr { |
65 | uint32_t sense_len; |
66 | uint32_t residual; |
67 | uint16_t status_qualifier; |
68 | uint8_t status; |
69 | uint8_t response; |
70 | uint8_t sense[96]; |
71 | } __packed; |
72 | /* Followed by data-in. */ |
73 | |