[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / linux / virtio_scsi.h

#ifndef _LINUX_VIRTIO_SCSI_H
#define _LINUX_VIRTIO_SCSI_H
/* This header is BSD licensed so anyone can use the definitions to implement
 * compatible drivers/servers. */

#define VIRTIO_SCSI_CDB_SIZE   32
#define VIRTIO_SCSI_SENSE_SIZE 96

/* SCSI command request, followed by data-out */
struct virtio_scsi_cmd_req {
	u8 lun[8];		/* Logical Unit Number */
	u64 tag;		/* Command identifier */
	u8 task_attr;		/* Task attribute */
	u8 prio;
	u8 crn;
	u8 cdb[VIRTIO_SCSI_CDB_SIZE];
} __packed;

/* Response, followed by sense data and data-in */
struct virtio_scsi_cmd_resp {
	u32 sense_len;		/* Sense data length */
	u32 resid;		/* Residual bytes in data buffer */
	u16 status_qualifier;	/* Status qualifier */
	u8 status;		/* Command completion status */
	u8 response;		/* Response values */
	u8 sense[VIRTIO_SCSI_SENSE_SIZE];
} __packed;

/* Task Management Request */
struct virtio_scsi_ctrl_tmf_req {
	u32 type;
	u32 subtype;
	u8 lun[8];
	u64 tag;
} __packed;

struct virtio_scsi_ctrl_tmf_resp {
	u8 response;
} __packed;

/* Asynchronous notification query/subscription */
struct virtio_scsi_ctrl_an_req {
	u32 type;
	u8 lun[8];
	u32 event_requested;
} __packed;

struct virtio_scsi_ctrl_an_resp {
	u32 event_actual;
	u8 response;
} __packed;

struct virtio_scsi_event {
	u32 event;
	u8 lun[8];
	u32 reason;
} __packed;

struct virtio_scsi_config {
	u32 num_queues;
	u32 seg_max;
	u32 max_sectors;
	u32 cmd_per_lun;
	u32 event_info_size;
	u32 sense_size;
	u32 cdb_size;
	u16 max_channel;
	u16 max_target;
	u32 max_lun;
} __packed;

/* Feature Bits */
#define VIRTIO_SCSI_F_INOUT                    0
#define VIRTIO_SCSI_F_HOTPLUG                  1

/* 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

/* Reasons of transport reset event */
#define VIRTIO_SCSI_EVT_RESET_HARD             0
#define VIRTIO_SCSI_EVT_RESET_RESCAN           1
#define VIRTIO_SCSI_EVT_RESET_REMOVED          2

#define VIRTIO_SCSI_S_SIMPLE                   0
#define VIRTIO_SCSI_S_ORDERED                  1
#define VIRTIO_SCSI_S_HEAD                     2
#define VIRTIO_SCSI_S_ACA                      3


#endif /* _LINUX_VIRTIO_SCSI_H */
Commit	Line	Data
4fe74b1c PB	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
365a7150 CM	72	/* Feature Bits */
	73	#define VIRTIO_SCSI_F_INOUT 0
	74	#define VIRTIO_SCSI_F_HOTPLUG 1
	75
4fe74b1c PB	76	/* Response codes */
	77	#define VIRTIO_SCSI_S_OK 0
	78	#define VIRTIO_SCSI_S_OVERRUN 1
	79	#define VIRTIO_SCSI_S_ABORTED 2
	80	#define VIRTIO_SCSI_S_BAD_TARGET 3
	81	#define VIRTIO_SCSI_S_RESET 4
	82	#define VIRTIO_SCSI_S_BUSY 5
	83	#define VIRTIO_SCSI_S_TRANSPORT_FAILURE 6
	84	#define VIRTIO_SCSI_S_TARGET_FAILURE 7
	85	#define VIRTIO_SCSI_S_NEXUS_FAILURE 8
	86	#define VIRTIO_SCSI_S_FAILURE 9
	87	#define VIRTIO_SCSI_S_FUNCTION_SUCCEEDED 10
	88	#define VIRTIO_SCSI_S_FUNCTION_REJECTED 11
	89	#define VIRTIO_SCSI_S_INCORRECT_LUN 12
	90
	91	/* Controlq type codes. */
	92	#define VIRTIO_SCSI_T_TMF 0
	93	#define VIRTIO_SCSI_T_AN_QUERY 1
	94	#define VIRTIO_SCSI_T_AN_SUBSCRIBE 2
	95
	96	/* Valid TMF subtypes. */
	97	#define VIRTIO_SCSI_T_TMF_ABORT_TASK 0
	98	#define VIRTIO_SCSI_T_TMF_ABORT_TASK_SET 1
	99	#define VIRTIO_SCSI_T_TMF_CLEAR_ACA 2
	100	#define VIRTIO_SCSI_T_TMF_CLEAR_TASK_SET 3
	101	#define VIRTIO_SCSI_T_TMF_I_T_NEXUS_RESET 4
	102	#define VIRTIO_SCSI_T_TMF_LOGICAL_UNIT_RESET 5
	103	#define VIRTIO_SCSI_T_TMF_QUERY_TASK 6
	104	#define VIRTIO_SCSI_T_TMF_QUERY_TASK_SET 7
	105
	106	/* Events. */
	107	#define VIRTIO_SCSI_T_EVENTS_MISSED 0x80000000
	108	#define VIRTIO_SCSI_T_NO_EVENT 0
	109	#define VIRTIO_SCSI_T_TRANSPORT_RESET 1
	110	#define VIRTIO_SCSI_T_ASYNC_NOTIFY 2
	111
365a7150 CM	112	/* Reasons of transport reset event */
	113	#define VIRTIO_SCSI_EVT_RESET_HARD 0
	114	#define VIRTIO_SCSI_EVT_RESET_RESCAN 1
	115	#define VIRTIO_SCSI_EVT_RESET_REMOVED 2
	116
4fe74b1c PB	117	#define VIRTIO_SCSI_S_SIMPLE 0
	118	#define VIRTIO_SCSI_S_ORDERED 1
	119	#define VIRTIO_SCSI_S_HEAD 2
	120	#define VIRTIO_SCSI_S_ACA 3
	121
	122
	123	#endif /* _LINUX_VIRTIO_SCSI_H */