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1 | #ifndef _LINUX_VIRTIO_SCSI_H |
2 | #define _LINUX_VIRTIO_SCSI_H | |
3 | /* This header is BSD licensed so anyone can use the definitions to implement | |
4 | * compatible drivers/servers. */ | |
5 | ||
6 | #define VIRTIO_SCSI_CDB_SIZE 32 | |
7 | #define VIRTIO_SCSI_SENSE_SIZE 96 | |
8 | ||
9 | /* SCSI command request, followed by data-out */ | |
10 | struct virtio_scsi_cmd_req { | |
11 | u8 lun[8]; /* Logical Unit Number */ | |
12 | u64 tag; /* Command identifier */ | |
13 | u8 task_attr; /* Task attribute */ | |
14 | u8 prio; | |
15 | u8 crn; | |
16 | u8 cdb[VIRTIO_SCSI_CDB_SIZE]; | |
17 | } __packed; | |
18 | ||
19 | /* Response, followed by sense data and data-in */ | |
20 | struct virtio_scsi_cmd_resp { | |
21 | u32 sense_len; /* Sense data length */ | |
22 | u32 resid; /* Residual bytes in data buffer */ | |
23 | u16 status_qualifier; /* Status qualifier */ | |
24 | u8 status; /* Command completion status */ | |
25 | u8 response; /* Response values */ | |
26 | u8 sense[VIRTIO_SCSI_SENSE_SIZE]; | |
27 | } __packed; | |
28 | ||
29 | /* Task Management Request */ | |
30 | struct virtio_scsi_ctrl_tmf_req { | |
31 | u32 type; | |
32 | u32 subtype; | |
33 | u8 lun[8]; | |
34 | u64 tag; | |
35 | } __packed; | |
36 | ||
37 | struct virtio_scsi_ctrl_tmf_resp { | |
38 | u8 response; | |
39 | } __packed; | |
40 | ||
41 | /* Asynchronous notification query/subscription */ | |
42 | struct virtio_scsi_ctrl_an_req { | |
43 | u32 type; | |
44 | u8 lun[8]; | |
45 | u32 event_requested; | |
46 | } __packed; | |
47 | ||
48 | struct virtio_scsi_ctrl_an_resp { | |
49 | u32 event_actual; | |
50 | u8 response; | |
51 | } __packed; | |
52 | ||
53 | struct virtio_scsi_event { | |
54 | u32 event; | |
55 | u8 lun[8]; | |
56 | u32 reason; | |
57 | } __packed; | |
58 | ||
59 | struct virtio_scsi_config { | |
60 | u32 num_queues; | |
61 | u32 seg_max; | |
62 | u32 max_sectors; | |
63 | u32 cmd_per_lun; | |
64 | u32 event_info_size; | |
65 | u32 sense_size; | |
66 | u32 cdb_size; | |
67 | u16 max_channel; | |
68 | u16 max_target; | |
69 | u32 max_lun; | |
70 | } __packed; | |
71 | ||
72 | /* Response codes */ | |
73 | #define VIRTIO_SCSI_S_OK 0 | |
74 | #define VIRTIO_SCSI_S_OVERRUN 1 | |
75 | #define VIRTIO_SCSI_S_ABORTED 2 | |
76 | #define VIRTIO_SCSI_S_BAD_TARGET 3 | |
77 | #define VIRTIO_SCSI_S_RESET 4 | |
78 | #define VIRTIO_SCSI_S_BUSY 5 | |
79 | #define VIRTIO_SCSI_S_TRANSPORT_FAILURE 6 | |
80 | #define VIRTIO_SCSI_S_TARGET_FAILURE 7 | |
81 | #define VIRTIO_SCSI_S_NEXUS_FAILURE 8 | |
82 | #define VIRTIO_SCSI_S_FAILURE 9 | |
83 | #define VIRTIO_SCSI_S_FUNCTION_SUCCEEDED 10 | |
84 | #define VIRTIO_SCSI_S_FUNCTION_REJECTED 11 | |
85 | #define VIRTIO_SCSI_S_INCORRECT_LUN 12 | |
86 | ||
87 | /* Controlq type codes. */ | |
88 | #define VIRTIO_SCSI_T_TMF 0 | |
89 | #define VIRTIO_SCSI_T_AN_QUERY 1 | |
90 | #define VIRTIO_SCSI_T_AN_SUBSCRIBE 2 | |
91 | ||
92 | /* Valid TMF subtypes. */ | |
93 | #define VIRTIO_SCSI_T_TMF_ABORT_TASK 0 | |
94 | #define VIRTIO_SCSI_T_TMF_ABORT_TASK_SET 1 | |
95 | #define VIRTIO_SCSI_T_TMF_CLEAR_ACA 2 | |
96 | #define VIRTIO_SCSI_T_TMF_CLEAR_TASK_SET 3 | |
97 | #define VIRTIO_SCSI_T_TMF_I_T_NEXUS_RESET 4 | |
98 | #define VIRTIO_SCSI_T_TMF_LOGICAL_UNIT_RESET 5 | |
99 | #define VIRTIO_SCSI_T_TMF_QUERY_TASK 6 | |
100 | #define VIRTIO_SCSI_T_TMF_QUERY_TASK_SET 7 | |
101 | ||
102 | /* Events. */ | |
103 | #define VIRTIO_SCSI_T_EVENTS_MISSED 0x80000000 | |
104 | #define VIRTIO_SCSI_T_NO_EVENT 0 | |
105 | #define VIRTIO_SCSI_T_TRANSPORT_RESET 1 | |
106 | #define VIRTIO_SCSI_T_ASYNC_NOTIFY 2 | |
107 | ||
108 | #define VIRTIO_SCSI_S_SIMPLE 0 | |
109 | #define VIRTIO_SCSI_S_ORDERED 1 | |
110 | #define VIRTIO_SCSI_S_HEAD 2 | |
111 | #define VIRTIO_SCSI_S_ACA 3 | |
112 | ||
113 | ||
114 | #endif /* _LINUX_VIRTIO_SCSI_H */ |