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Jens Axboe3d6392c2007-07-09 12:38:05 +02001#ifndef BSG_H
2#define BSG_H
3
FUJITA Tomonori15d10b62007-07-16 08:52:16 +02004#define BSG_PROTOCOL_SCSI 0
5
6#define BSG_SUB_PROTOCOL_SCSI_CMD 0
7#define BSG_SUB_PROTOCOL_SCSI_TMF 1
8#define BSG_SUB_PROTOCOL_SCSI_TRANSPORT 2
9
FUJITA Tomonori45977d0e2006-12-20 11:19:32 +010010struct sg_io_v4 {
FUJITA Tomonori38621532006-12-22 09:43:51 +010011 __s32 guard; /* [i] 'Q' to differentiate from v3 */
12 __u32 protocol; /* [i] 0 -> SCSI , .... */
13 __u32 subprotocol; /* [i] 0 -> SCSI command, 1 -> SCSI task
FUJITA Tomonori45977d0e2006-12-20 11:19:32 +010014 management function, .... */
15
FUJITA Tomonori38621532006-12-22 09:43:51 +010016 __u32 request_len; /* [i] in bytes */
17 __u64 request; /* [i], [*i] {SCSI: cdb} */
18 __u32 request_attr; /* [i] {SCSI: task attribute} */
19 __u32 request_tag; /* [i] {SCSI: task tag (only if flagged)} */
20 __u32 request_priority; /* [i] {SCSI: task priority} */
21 __u32 max_response_len; /* [i] in bytes */
22 __u64 response; /* [i], [*o] {SCSI: (auto)sense data} */
FUJITA Tomonori45977d0e2006-12-20 11:19:32 +010023
24 /* "din_" for data in (from device); "dout_" for data out (to device) */
FUJITA Tomonori38621532006-12-22 09:43:51 +010025 __u32 dout_xfer_len; /* [i] bytes to be transferred to device */
26 __u32 din_xfer_len; /* [i] bytes to be transferred from device */
27 __u64 dout_xferp; /* [i], [*i] */
28 __u64 din_xferp; /* [i], [*o] */
FUJITA Tomonori45977d0e2006-12-20 11:19:32 +010029
FUJITA Tomonori38621532006-12-22 09:43:51 +010030 __u32 timeout; /* [i] units: millisecond */
31 __u32 flags; /* [i] bit mask */
32 __u64 usr_ptr; /* [i->o] unused internally */
33 __u32 spare_in; /* [i] */
FUJITA Tomonori45977d0e2006-12-20 11:19:32 +010034
FUJITA Tomonori38621532006-12-22 09:43:51 +010035 __u32 driver_status; /* [o] 0 -> ok */
36 __u32 transport_status; /* [o] 0 -> ok */
37 __u32 device_status; /* [o] {SCSI: command completion status} */
38 __u32 retry_delay; /* [o] {SCSI: status auxiliary information} */
39 __u32 info; /* [o] additional information */
40 __u32 duration; /* [o] time to complete, in milliseconds */
41 __u32 response_len; /* [o] bytes of response actually written */
42 __s32 din_resid; /* [o] actual_din_xfer_len - din_xfer_len */
43 __u32 generated_tag; /* [o] {SCSI: task tag that transport chose} */
44 __u32 spare_out; /* [o] */
FUJITA Tomonori45977d0e2006-12-20 11:19:32 +010045
FUJITA Tomonori38621532006-12-22 09:43:51 +010046 __u32 padding;
FUJITA Tomonori45977d0e2006-12-20 11:19:32 +010047};
48
49#ifdef __KERNEL__
50
Jens Axboe3d6392c2007-07-09 12:38:05 +020051#if defined(CONFIG_BLK_DEV_BSG)
52struct bsg_class_device {
53 struct class_device *class_dev;
54 struct device *dev;
55 int minor;
Jens Axboe3d6392c2007-07-09 12:38:05 +020056 struct list_head list;
FUJITA Tomonorid351af02007-07-09 12:40:35 +020057 struct request_queue *queue;
Jens Axboe3d6392c2007-07-09 12:38:05 +020058};
59
FUJITA Tomonori4cf07232007-03-30 11:19:39 +020060extern int bsg_register_queue(struct request_queue *, const char *);
FUJITA Tomonorid351af02007-07-09 12:40:35 +020061extern void bsg_unregister_queue(struct request_queue *);
Jens Axboe3d6392c2007-07-09 12:38:05 +020062#else
63struct bsg_class_device { };
FUJITA Tomonorid351af02007-07-09 12:40:35 +020064#define bsg_register_queue(disk, name) (0)
65#define bsg_unregister_queue(disk) do { } while (0)
Jens Axboe3d6392c2007-07-09 12:38:05 +020066#endif
67
FUJITA Tomonori45977d0e2006-12-20 11:19:32 +010068#endif /* __KERNEL__ */
69
Jens Axboe3d6392c2007-07-09 12:38:05 +020070#endif