2 * This header is BSD licensed so anyone can use the definitions to implement
3 * compatible drivers/servers.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
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19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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27 #ifndef _LINUX_VIRTIO_SCSI_H
28 #define _LINUX_VIRTIO_SCSI_H
30 #define VIRTIO_SCSI_CDB_SIZE 32
31 #define VIRTIO_SCSI_SENSE_SIZE 96
33 /* SCSI command request, followed by data-out */
34 struct virtio_scsi_cmd_req {
35 u8 lun[8]; /* Logical Unit Number */
36 u64 tag; /* Command identifier */
37 u8 task_attr; /* Task attribute */
38 u8 prio; /* SAM command priority field */
40 u8 cdb[VIRTIO_SCSI_CDB_SIZE];
43 /* SCSI command request, followed by protection information */
44 struct virtio_scsi_cmd_req_pi {
45 u8 lun[8]; /* Logical Unit Number */
46 u64 tag; /* Command identifier */
47 u8 task_attr; /* Task attribute */
48 u8 prio; /* SAM command priority field */
50 u32 pi_bytesout; /* DataOUT PI Number of bytes */
51 u32 pi_bytesin; /* DataIN PI Number of bytes */
52 u8 cdb[VIRTIO_SCSI_CDB_SIZE];
55 /* Response, followed by sense data and data-in */
56 struct virtio_scsi_cmd_resp {
57 u32 sense_len; /* Sense data length */
58 u32 resid; /* Residual bytes in data buffer */
59 u16 status_qualifier; /* Status qualifier */
60 u8 status; /* Command completion status */
61 u8 response; /* Response values */
62 u8 sense[VIRTIO_SCSI_SENSE_SIZE];
65 /* Task Management Request */
66 struct virtio_scsi_ctrl_tmf_req {
73 struct virtio_scsi_ctrl_tmf_resp {
77 /* Asynchronous notification query/subscription */
78 struct virtio_scsi_ctrl_an_req {
84 struct virtio_scsi_ctrl_an_resp {
89 struct virtio_scsi_event {
95 struct virtio_scsi_config {
109 #define VIRTIO_SCSI_F_INOUT 0
110 #define VIRTIO_SCSI_F_HOTPLUG 1
111 #define VIRTIO_SCSI_F_CHANGE 2
112 #define VIRTIO_SCSI_F_T10_PI 3
115 #define VIRTIO_SCSI_S_OK 0
116 #define VIRTIO_SCSI_S_OVERRUN 1
117 #define VIRTIO_SCSI_S_ABORTED 2
118 #define VIRTIO_SCSI_S_BAD_TARGET 3
119 #define VIRTIO_SCSI_S_RESET 4
120 #define VIRTIO_SCSI_S_BUSY 5
121 #define VIRTIO_SCSI_S_TRANSPORT_FAILURE 6
122 #define VIRTIO_SCSI_S_TARGET_FAILURE 7
123 #define VIRTIO_SCSI_S_NEXUS_FAILURE 8
124 #define VIRTIO_SCSI_S_FAILURE 9
125 #define VIRTIO_SCSI_S_FUNCTION_SUCCEEDED 10
126 #define VIRTIO_SCSI_S_FUNCTION_REJECTED 11
127 #define VIRTIO_SCSI_S_INCORRECT_LUN 12
129 /* Controlq type codes. */
130 #define VIRTIO_SCSI_T_TMF 0
131 #define VIRTIO_SCSI_T_AN_QUERY 1
132 #define VIRTIO_SCSI_T_AN_SUBSCRIBE 2
134 /* Valid TMF subtypes. */
135 #define VIRTIO_SCSI_T_TMF_ABORT_TASK 0
136 #define VIRTIO_SCSI_T_TMF_ABORT_TASK_SET 1
137 #define VIRTIO_SCSI_T_TMF_CLEAR_ACA 2
138 #define VIRTIO_SCSI_T_TMF_CLEAR_TASK_SET 3
139 #define VIRTIO_SCSI_T_TMF_I_T_NEXUS_RESET 4
140 #define VIRTIO_SCSI_T_TMF_LOGICAL_UNIT_RESET 5
141 #define VIRTIO_SCSI_T_TMF_QUERY_TASK 6
142 #define VIRTIO_SCSI_T_TMF_QUERY_TASK_SET 7
145 #define VIRTIO_SCSI_T_EVENTS_MISSED 0x80000000
146 #define VIRTIO_SCSI_T_NO_EVENT 0
147 #define VIRTIO_SCSI_T_TRANSPORT_RESET 1
148 #define VIRTIO_SCSI_T_ASYNC_NOTIFY 2
149 #define VIRTIO_SCSI_T_PARAM_CHANGE 3
151 /* Reasons of transport reset event */
152 #define VIRTIO_SCSI_EVT_RESET_HARD 0
153 #define VIRTIO_SCSI_EVT_RESET_RESCAN 1
154 #define VIRTIO_SCSI_EVT_RESET_REMOVED 2
156 #define VIRTIO_SCSI_S_SIMPLE 0
157 #define VIRTIO_SCSI_S_ORDERED 1
158 #define VIRTIO_SCSI_S_HEAD 2
159 #define VIRTIO_SCSI_S_ACA 3
162 #endif /* _LINUX_VIRTIO_SCSI_H */