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gerrit-public.fairphone.software / kernel / msm-4.9 / d351af01b9307566135cb0f355ca65d0952c10b5 / . / include / linux / bsg.h
blob: 0475a6d3ff6ad5a28711a23ba046c9552a29f482 [file] [log] [blame]
Jens Axboe3d6392c2007-07-09 12:38:05 +0200[diff] [blame]1#ifndef BSG_H
2#define BSG_H
3
FUJITA Tomonori45977d0e2006-12-20 11:19:32 +0100[diff] [blame]4struct sg_io_v4 {
FUJITA Tomonori38621532006-12-22 09:43:51 +0100[diff] [blame]5 __s32 guard; /* [i] 'Q' to differentiate from v3 */
6 __u32 protocol; /* [i] 0 -> SCSI , .... */
7 __u32 subprotocol; /* [i] 0 -> SCSI command, 1 -> SCSI task
FUJITA Tomonori45977d0e2006-12-20 11:19:32 +0100[diff] [blame]8 management function, .... */
9
FUJITA Tomonori38621532006-12-22 09:43:51 +0100[diff] [blame]10 __u32 request_len; /* [i] in bytes */
11 __u64 request; /* [i], [*i] {SCSI: cdb} */
12 __u32 request_attr; /* [i] {SCSI: task attribute} */
13 __u32 request_tag; /* [i] {SCSI: task tag (only if flagged)} */
14 __u32 request_priority; /* [i] {SCSI: task priority} */
15 __u32 max_response_len; /* [i] in bytes */
16 __u64 response; /* [i], [*o] {SCSI: (auto)sense data} */
FUJITA Tomonori45977d0e2006-12-20 11:19:32 +0100[diff] [blame]17
18 /* "din_" for data in (from device); "dout_" for data out (to device) */
FUJITA Tomonori38621532006-12-22 09:43:51 +0100[diff] [blame]19 __u32 dout_xfer_len; /* [i] bytes to be transferred to device */
20 __u32 din_xfer_len; /* [i] bytes to be transferred from device */
21 __u64 dout_xferp; /* [i], [*i] */
22 __u64 din_xferp; /* [i], [*o] */
FUJITA Tomonori45977d0e2006-12-20 11:19:32 +0100[diff] [blame]23
FUJITA Tomonori38621532006-12-22 09:43:51 +0100[diff] [blame]24 __u32 timeout; /* [i] units: millisecond */
25 __u32 flags; /* [i] bit mask */
26 __u64 usr_ptr; /* [i->o] unused internally */
27 __u32 spare_in; /* [i] */
FUJITA Tomonori45977d0e2006-12-20 11:19:32 +0100[diff] [blame]28
FUJITA Tomonori38621532006-12-22 09:43:51 +0100[diff] [blame]29 __u32 driver_status; /* [o] 0 -> ok */
30 __u32 transport_status; /* [o] 0 -> ok */
31 __u32 device_status; /* [o] {SCSI: command completion status} */
32 __u32 retry_delay; /* [o] {SCSI: status auxiliary information} */
33 __u32 info; /* [o] additional information */
34 __u32 duration; /* [o] time to complete, in milliseconds */
35 __u32 response_len; /* [o] bytes of response actually written */
36 __s32 din_resid; /* [o] actual_din_xfer_len - din_xfer_len */
37 __u32 generated_tag; /* [o] {SCSI: task tag that transport chose} */
38 __u32 spare_out; /* [o] */
FUJITA Tomonori45977d0e2006-12-20 11:19:32 +0100[diff] [blame]39
FUJITA Tomonori38621532006-12-22 09:43:51 +0100[diff] [blame]40 __u32 padding;
FUJITA Tomonori45977d0e2006-12-20 11:19:32 +0100[diff] [blame]41};
42
43#ifdef __KERNEL__
44
Jens Axboe3d6392c2007-07-09 12:38:05 +0200[diff] [blame]45#if defined(CONFIG_BLK_DEV_BSG)
46struct bsg_class_device {
47 struct class_device *class_dev;
48 struct device *dev;
49 int minor;
Jens Axboe3d6392c2007-07-09 12:38:05 +0200[diff] [blame]50 struct list_head list;
FUJITA Tomonorid351af02007-07-09 12:40:35 +0200[diff] [blame^]51 struct request_queue *queue;
Jens Axboe3d6392c2007-07-09 12:38:05 +0200[diff] [blame]52};
53
FUJITA Tomonorid351af02007-07-09 12:40:35 +0200[diff] [blame^]54extern int bsg_register_queue(struct request_queue *, char *);
55extern void bsg_unregister_queue(struct request_queue *);
Jens Axboe3d6392c2007-07-09 12:38:05 +0200[diff] [blame]56#else
57struct bsg_class_device { };
FUJITA Tomonorid351af02007-07-09 12:40:35 +0200[diff] [blame^]58#define bsg_register_queue(disk, name) (0)
59#define bsg_unregister_queue(disk) do { } while (0)
Jens Axboe3d6392c2007-07-09 12:38:05 +0200[diff] [blame]60#endif
61
FUJITA Tomonori45977d0e2006-12-20 11:19:32 +0100[diff] [blame]62#endif /* __KERNEL__ */
63
Jens Axboe3d6392c2007-07-09 12:38:05 +0200[diff] [blame]64#endif