5 int32_t guard; /* [i] 'Q' to differentiate from v3 */
6 uint32_t protocol; /* [i] 0 -> SCSI , .... */
7 uint32_t subprotocol; /* [i] 0 -> SCSI command, 1 -> SCSI task
8 management function, .... */
10 uint32_t request_len; /* [i] in bytes */
11 uint64_t request; /* [i], [*i] {SCSI: cdb} */
12 uint32_t request_attr; /* [i] {SCSI: task attribute} */
13 uint32_t request_tag; /* [i] {SCSI: task tag (only if flagged)} */
14 uint32_t request_priority; /* [i] {SCSI: task priority} */
15 uint32_t max_response_len; /* [i] in bytes */
16 uint64_t response; /* [i], [*o] {SCSI: (auto)sense data} */
18 /* "din_" for data in (from device); "dout_" for data out (to device) */
19 uint32_t dout_xfer_len; /* [i] bytes to be transferred to device */
20 uint32_t din_xfer_len; /* [i] bytes to be transferred from device */
21 uint64_t dout_xferp; /* [i], [*i] */
22 uint64_t din_xferp; /* [i], [*o] */
24 uint32_t timeout; /* [i] units: millisecond */
25 uint32_t flags; /* [i] bit mask */
26 uint64_t usr_ptr; /* [i->o] unused internally */
27 uint32_t spare_in; /* [i] */
29 uint32_t driver_status; /* [o] 0 -> ok */
30 uint32_t transport_status; /* [o] 0 -> ok */
31 uint32_t device_status; /* [o] {SCSI: command completion status} */
32 uint32_t retry_delay; /* [o] {SCSI: status auxiliary information} */
33 uint32_t info; /* [o] additional information */
34 uint32_t duration; /* [o] time to complete, in milliseconds */
35 uint32_t response_len; /* [o] bytes of response actually written */
36 int32_t din_resid; /* [o] actual_din_xfer_len - din_xfer_len */
37 uint32_t generated_tag; /* [o] {SCSI: task tag that transport chose} */
38 uint32_t spare_out; /* [o] */
45 #if defined(CONFIG_BLK_DEV_BSG)
46 struct bsg_class_device {
47 struct class_device *class_dev;
51 struct list_head list;
54 extern int bsg_register_disk(struct gendisk *);
55 extern void bsg_unregister_disk(struct gendisk *);
57 struct bsg_class_device { };
58 #define bsg_register_disk(disk) (0)
59 #define bsg_unregister_disk(disk) do { } while (0)
62 #endif /* __KERNEL__ */