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 */
53struct 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 */
64struct 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