diff options
Diffstat (limited to 'include/hw/virtio/virtio-scsi.h')
| -rw-r--r-- | include/hw/virtio/virtio-scsi.h | 135 |
1 files changed, 131 insertions, 4 deletions
diff --git a/include/hw/virtio/virtio-scsi.h b/include/hw/virtio/virtio-scsi.h index ccd7b0669c..4db346b546 100644 --- a/include/hw/virtio/virtio-scsi.h +++ b/include/hw/virtio/virtio-scsi.h @@ -18,6 +18,10 @@ #include "hw/pci/pci.h" #include "hw/scsi/scsi.h" +#define TYPE_VIRTIO_SCSI_COMMON "virtio-scsi-common" +#define VIRTIO_SCSI_COMMON(obj) \ + OBJECT_CHECK(VirtIOSCSICommon, (obj), TYPE_VIRTIO_SCSI_COMMON) + #define TYPE_VIRTIO_SCSI "virtio-scsi-device" #define VIRTIO_SCSI(obj) \ OBJECT_CHECK(VirtIOSCSI, (obj), TYPE_VIRTIO_SCSI) @@ -31,24 +35,143 @@ #define VIRTIO_SCSI_F_HOTPLUG 1 #define VIRTIO_SCSI_F_CHANGE 2 +#define VIRTIO_SCSI_VQ_SIZE 128 +#define VIRTIO_SCSI_CDB_SIZE 32 +#define VIRTIO_SCSI_SENSE_SIZE 96 +#define VIRTIO_SCSI_MAX_CHANNEL 0 +#define VIRTIO_SCSI_MAX_TARGET 255 +#define VIRTIO_SCSI_MAX_LUN 16383 + +/* Response codes */ +#define VIRTIO_SCSI_S_OK 0 +#define VIRTIO_SCSI_S_OVERRUN 1 +#define VIRTIO_SCSI_S_ABORTED 2 +#define VIRTIO_SCSI_S_BAD_TARGET 3 +#define VIRTIO_SCSI_S_RESET 4 +#define VIRTIO_SCSI_S_BUSY 5 +#define VIRTIO_SCSI_S_TRANSPORT_FAILURE 6 +#define VIRTIO_SCSI_S_TARGET_FAILURE 7 +#define VIRTIO_SCSI_S_NEXUS_FAILURE 8 +#define VIRTIO_SCSI_S_FAILURE 9 +#define VIRTIO_SCSI_S_FUNCTION_SUCCEEDED 10 +#define VIRTIO_SCSI_S_FUNCTION_REJECTED 11 +#define VIRTIO_SCSI_S_INCORRECT_LUN 12 + +/* Controlq type codes. */ +#define VIRTIO_SCSI_T_TMF 0 +#define VIRTIO_SCSI_T_AN_QUERY 1 +#define VIRTIO_SCSI_T_AN_SUBSCRIBE 2 + +/* Valid TMF subtypes. */ +#define VIRTIO_SCSI_T_TMF_ABORT_TASK 0 +#define VIRTIO_SCSI_T_TMF_ABORT_TASK_SET 1 +#define VIRTIO_SCSI_T_TMF_CLEAR_ACA 2 +#define VIRTIO_SCSI_T_TMF_CLEAR_TASK_SET 3 +#define VIRTIO_SCSI_T_TMF_I_T_NEXUS_RESET 4 +#define VIRTIO_SCSI_T_TMF_LOGICAL_UNIT_RESET 5 +#define VIRTIO_SCSI_T_TMF_QUERY_TASK 6 +#define VIRTIO_SCSI_T_TMF_QUERY_TASK_SET 7 + +/* Events. */ +#define VIRTIO_SCSI_T_EVENTS_MISSED 0x80000000 +#define VIRTIO_SCSI_T_NO_EVENT 0 +#define VIRTIO_SCSI_T_TRANSPORT_RESET 1 +#define VIRTIO_SCSI_T_ASYNC_NOTIFY 2 +#define VIRTIO_SCSI_T_PARAM_CHANGE 3 + +/* Reasons for transport reset event */ +#define VIRTIO_SCSI_EVT_RESET_HARD 0 +#define VIRTIO_SCSI_EVT_RESET_RESCAN 1 +#define VIRTIO_SCSI_EVT_RESET_REMOVED 2 + +/* SCSI command request, followed by data-out */ +typedef struct { + uint8_t lun[8]; /* Logical Unit Number */ + uint64_t tag; /* Command identifier */ + uint8_t task_attr; /* Task attribute */ + uint8_t prio; + uint8_t crn; + uint8_t cdb[]; +} QEMU_PACKED VirtIOSCSICmdReq; + +/* Response, followed by sense data and data-in */ +typedef struct { + uint32_t sense_len; /* Sense data length */ + uint32_t resid; /* Residual bytes in data buffer */ + uint16_t status_qualifier; /* Status qualifier */ + uint8_t status; /* Command completion status */ + uint8_t response; /* Response values */ + uint8_t sense[]; +} QEMU_PACKED VirtIOSCSICmdResp; + +/* Task Management Request */ +typedef struct { + uint32_t type; + uint32_t subtype; + uint8_t lun[8]; + uint64_t tag; +} QEMU_PACKED VirtIOSCSICtrlTMFReq; + +typedef struct { + uint8_t response; +} QEMU_PACKED VirtIOSCSICtrlTMFResp; + +/* Asynchronous notification query/subscription */ +typedef struct { + uint32_t type; + uint8_t lun[8]; + uint32_t event_requested; +} QEMU_PACKED VirtIOSCSICtrlANReq; + +typedef struct { + uint32_t event_actual; + uint8_t response; +} QEMU_PACKED VirtIOSCSICtrlANResp; + +typedef struct { + uint32_t event; + uint8_t lun[8]; + uint32_t reason; +} QEMU_PACKED VirtIOSCSIEvent; + +typedef struct { + uint32_t num_queues; + uint32_t seg_max; + uint32_t max_sectors; + uint32_t cmd_per_lun; + uint32_t event_info_size; + uint32_t sense_size; + uint32_t cdb_size; + uint16_t max_channel; + uint16_t max_target; + uint32_t max_lun; +} QEMU_PACKED VirtIOSCSIConfig; + struct VirtIOSCSIConf { uint32_t num_queues; uint32_t max_sectors; uint32_t cmd_per_lun; + char *vhostfd; + char *wwpn; }; -typedef struct VirtIOSCSI { +typedef struct VirtIOSCSICommon { VirtIODevice parent_obj; VirtIOSCSIConf conf; - SCSIBus bus; uint32_t sense_size; uint32_t cdb_size; - int resetting; - bool events_dropped; VirtQueue *ctrl_vq; VirtQueue *event_vq; VirtQueue **cmd_vqs; +} VirtIOSCSICommon; + +typedef struct { + VirtIOSCSICommon parent_obj; + + SCSIBus bus; + int resetting; + bool events_dropped; } VirtIOSCSI; #define DEFINE_VIRTIO_SCSI_PROPERTIES(_state, _conf_field) \ @@ -63,4 +186,8 @@ typedef struct VirtIOSCSI { DEFINE_PROP_BIT("param_change", _state, _feature_field, \ VIRTIO_SCSI_F_CHANGE, true) +int virtio_scsi_common_init(VirtIOSCSICommon *vs); +int virtio_scsi_common_exit(VirtIOSCSICommon *vs); + + #endif /* _QEMU_VIRTIO_SCSI_H */ |