xref: /netbsd-src/sys/dev/pci/vioscsireg.h (revision 0b5c63bcba7623c87cd64ea67fc7df7bed23e33a)
1 /*	$NetBSD: vioscsireg.h,v 1.2 2021/08/26 21:33:36 andvar Exp $	*/
2 /*	$OpenBSD: vioscsireg.h,v 1.1 2013/12/20 21:50:49 matthew Exp $	*/
3 /*
4  * Copyright (c) 2013 Google Inc.
5  *
6  * Permission to use, copy, modify, and distribute this software for any
7  * purpose with or without fee is hereby granted, provided that the above
8  * copyright notice and this permission notice appear in all copies.
9  *
10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17  */
18 
19 /* Configuration registers */
20 #define VIRTIO_SCSI_CONFIG_NUM_QUEUES		0 /* 32bit */
21 #define VIRTIO_SCSI_CONFIG_SEG_MAX		4 /* 32bit */
22 #define VIRTIO_SCSI_CONFIG_MAX_SECTORS		8 /* 32bit */
23 #define VIRTIO_SCSI_CONFIG_CMD_PER_LUN		12 /* 32bit */
24 #define VIRTIO_SCSI_CONFIG_EVENT_INFO_SIZE	16 /* 32bit */
25 #define VIRTIO_SCSI_CONFIG_SENSE_SIZE		20 /* 32bit */
26 #define VIRTIO_SCSI_CONFIG_CDB_SIZE		24 /* 32bit */
27 #define VIRTIO_SCSI_CONFIG_MAX_CHANNEL		28 /* 16bit */
28 #define VIRTIO_SCSI_CONFIG_MAX_TARGET		30 /* 16bit */
29 #define VIRTIO_SCSI_CONFIG_MAX_LUN		32 /* 32bit */
30 
31 /* Feature bits */
32 #define VIRTIO_SCSI_F_INOUT			(1<<0)
33 #define VIRTIO_SCSI_F_HOTPLUG			(1<<1)
34 
35 /* Response status values */
36 #define VIRTIO_SCSI_S_OK			0
37 #define VIRTIO_SCSI_S_OVERRUN			1
38 #define VIRTIO_SCSI_S_ABORTED			2
39 #define VIRTIO_SCSI_S_BAD_TARGET		3
40 #define VIRTIO_SCSI_S_RESET			4
41 #define VIRTIO_SCSI_S_BUSY			5
42 #define VIRTIO_SCSI_S_TRANSPORT_FAILURE		6
43 #define VIRTIO_SCSI_S_TARGET_FAILURE		7
44 #define VIRTIO_SCSI_S_NEXUS_FAILURE		8
45 #define VIRTIO_SCSI_S_FAILURE			9
46 
47 /* Task attributes */
48 #define VIRTIO_SCSI_S_SIMPLE			0
49 #define VIRTIO_SCSI_S_ORDERED			1
50 #define VIRTIO_SCSI_S_HEAD			2
51 #define VIRTIO_SCSI_S_ACA			3
52 
53 /* Request header structure */
54 struct virtio_scsi_req_hdr {
55 	uint8_t		lun[8];
56 	uint64_t	id;
57 	uint8_t		task_attr;
58 	uint8_t		prio;
59 	uint8_t		crn;
60 	uint8_t		cdb[32];
61 } __packed;
62 /* Followed by data-out. */
63 
64 /* Response header structure */
65 struct virtio_scsi_res_hdr {
66 	uint32_t	sense_len;
67 	uint32_t	residual;
68 	uint16_t	status_qualifier;
69 	uint8_t		status;
70 	uint8_t		response;
71 	uint8_t		sense[96];
72 } __packed;
73 /* Followed by data-in. */
74