| Paolo Bonzini | 4fe74b1 | 2012-02-05 12:16:00 +0100 | [diff] [blame] | 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 */ |