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git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blob - include/linux/bsg.h
4 #define BSG_PROTOCOL_SCSI 0
6 #define BSG_SUB_PROTOCOL_SCSI_CMD 0
7 #define BSG_SUB_PROTOCOL_SCSI_TMF 1
8 #define BSG_SUB_PROTOCOL_SCSI_TRANSPORT 2
11 __s32 guard
; /* [i] 'Q' to differentiate from v3 */
12 __u32 protocol
; /* [i] 0 -> SCSI , .... */
13 __u32 subprotocol
; /* [i] 0 -> SCSI command, 1 -> SCSI task
14 management function, .... */
16 __u32 request_len
; /* [i] in bytes */
17 __u64 request
; /* [i], [*i] {SCSI: cdb} */
18 __u64 request_tag
; /* [i] {SCSI: task tag (only if flagged)} */
19 __u32 request_attr
; /* [i] {SCSI: task attribute} */
20 __u32 request_priority
; /* [i] {SCSI: task priority} */
21 __u32 request_extra
; /* [i] {spare, for padding} */
22 __u32 max_response_len
; /* [i] in bytes */
23 __u64 response
; /* [i], [*o] {SCSI: (auto)sense data} */
25 /* "dout_": data out (to device); "din_": data in (from device) */
26 __u32 dout_iovec_count
; /* [i] 0 -> "flat" dout transfer else
27 dout_xfer points to array of iovec */
28 __u32 dout_xfer_len
; /* [i] bytes to be transferred to device */
29 __u32 din_iovec_count
; /* [i] 0 -> "flat" din transfer */
30 __u32 din_xfer_len
; /* [i] bytes to be transferred from device */
31 __u64 dout_xferp
; /* [i], [*i] */
32 __u64 din_xferp
; /* [i], [*o] */
34 __u32 timeout
; /* [i] units: millisecond */
35 __u32 flags
; /* [i] bit mask */
36 __u64 usr_ptr
; /* [i->o] unused internally */
37 __u32 spare_in
; /* [i] */
39 __u32 driver_status
; /* [o] 0 -> ok */
40 __u32 transport_status
; /* [o] 0 -> ok */
41 __u32 device_status
; /* [o] {SCSI: command completion status} */
42 __u32 retry_delay
; /* [o] {SCSI: status auxiliary information} */
43 __u32 info
; /* [o] additional information */
44 __u32 duration
; /* [o] time to complete, in milliseconds */
45 __u32 response_len
; /* [o] bytes of response actually written */
46 __s32 din_resid
; /* [o] din_xfer_len - actual_din_xfer_len */
47 __s32 dout_resid
; /* [o] dout_xfer_len - actual_dout_xfer_len */
48 __u64 generated_tag
; /* [o] {SCSI: transport generated task tag} */
49 __u32 spare_out
; /* [o] */
56 #if defined(CONFIG_BLK_DEV_BSG)
57 struct bsg_class_device
{
58 struct device
*class_dev
;
59 struct device
*parent
;
61 struct request_queue
*queue
;
63 void (*release
)(struct device
*);
66 extern int bsg_register_queue(struct request_queue
*q
,
67 struct device
*parent
, const char *name
,
68 void (*release
)(struct device
*));
69 extern void bsg_unregister_queue(struct request_queue
*);
71 static inline int bsg_register_queue(struct request_queue
*q
,
72 struct device
*parent
, const char *name
,
73 void (*release
)(struct device
*))
77 static inline void bsg_unregister_queue(struct request_queue
*q
)
82 #endif /* __KERNEL__ */