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git.proxmox.com Git - mirror_ubuntu-bionic-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 * For flags member below
12 * sg.h sg_io_hdr also has bits defined for it's flags member. However
13 * none of these bits are implemented/used by bsg. The bits below are
14 * allocated to not conflict with sg.h ones anyway.
16 #define BSG_FLAG_Q_AT_TAIL 0x10 /* default, == 0 at this bit, is Q_AT_HEAD */
19 __s32 guard
; /* [i] 'Q' to differentiate from v3 */
20 __u32 protocol
; /* [i] 0 -> SCSI , .... */
21 __u32 subprotocol
; /* [i] 0 -> SCSI command, 1 -> SCSI task
22 management function, .... */
24 __u32 request_len
; /* [i] in bytes */
25 __u64 request
; /* [i], [*i] {SCSI: cdb} */
26 __u64 request_tag
; /* [i] {SCSI: task tag (only if flagged)} */
27 __u32 request_attr
; /* [i] {SCSI: task attribute} */
28 __u32 request_priority
; /* [i] {SCSI: task priority} */
29 __u32 request_extra
; /* [i] {spare, for padding} */
30 __u32 max_response_len
; /* [i] in bytes */
31 __u64 response
; /* [i], [*o] {SCSI: (auto)sense data} */
33 /* "dout_": data out (to device); "din_": data in (from device) */
34 __u32 dout_iovec_count
; /* [i] 0 -> "flat" dout transfer else
35 dout_xfer points to array of iovec */
36 __u32 dout_xfer_len
; /* [i] bytes to be transferred to device */
37 __u32 din_iovec_count
; /* [i] 0 -> "flat" din transfer */
38 __u32 din_xfer_len
; /* [i] bytes to be transferred from device */
39 __u64 dout_xferp
; /* [i], [*i] */
40 __u64 din_xferp
; /* [i], [*o] */
42 __u32 timeout
; /* [i] units: millisecond */
43 __u32 flags
; /* [i] bit mask */
44 __u64 usr_ptr
; /* [i->o] unused internally */
45 __u32 spare_in
; /* [i] */
47 __u32 driver_status
; /* [o] 0 -> ok */
48 __u32 transport_status
; /* [o] 0 -> ok */
49 __u32 device_status
; /* [o] {SCSI: command completion status} */
50 __u32 retry_delay
; /* [o] {SCSI: status auxiliary information} */
51 __u32 info
; /* [o] additional information */
52 __u32 duration
; /* [o] time to complete, in milliseconds */
53 __u32 response_len
; /* [o] bytes of response actually written */
54 __s32 din_resid
; /* [o] din_xfer_len - actual_din_xfer_len */
55 __s32 dout_resid
; /* [o] dout_xfer_len - actual_dout_xfer_len */
56 __u64 generated_tag
; /* [o] {SCSI: transport generated task tag} */
57 __u32 spare_out
; /* [o] */
64 #if defined(CONFIG_BLK_DEV_BSG)
65 struct bsg_class_device
{
66 struct device
*class_dev
;
67 struct device
*parent
;
69 struct request_queue
*queue
;
71 void (*release
)(struct device
*);
74 extern int bsg_register_queue(struct request_queue
*q
,
75 struct device
*parent
, const char *name
,
76 void (*release
)(struct device
*));
77 extern void bsg_unregister_queue(struct request_queue
*);
79 static inline int bsg_register_queue(struct request_queue
*q
,
80 struct device
*parent
, const char *name
,
81 void (*release
)(struct device
*))
85 static inline void bsg_unregister_queue(struct request_queue
*q
)
90 #endif /* __KERNEL__ */