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