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gerrit-public.fairphone.software / kernel / msm-4.9 / 39dca558a5b52b63e49bc234a7e887be092aa690 / . / include / linux / bsg.h
blob: f415f89e0ac84ae77ba4309bb9eb023007c8f399 [file] [log] [blame]
Jens Axboe3d6392c2007-07-09 12:38:05 +0200[diff] [blame]1#ifndef BSG_H
2#define BSG_H
3
FUJITA Tomonori15d10b62007-07-16 08:52:16 +0200[diff] [blame]4#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 +0100[diff] [blame]10struct sg_io_v4 {
FUJITA Tomonori38621532006-12-22 09:43:51 +0100[diff] [blame]11 __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 +0100[diff] [blame]14 management function, .... */
15
FUJITA Tomonori38621532006-12-22 09:43:51 +0100[diff] [blame]16 __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 +0100[diff] [blame]23
24 /* "din_" for data in (from device); "dout_" for data out (to device) */
FUJITA Tomonori38621532006-12-22 09:43:51 +0100[diff] [blame]25 __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 +0100[diff] [blame]29
FUJITA Tomonori38621532006-12-22 09:43:51 +0100[diff] [blame]30 __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 +0100[diff] [blame]34
FUJITA Tomonori38621532006-12-22 09:43:51 +0100[diff] [blame]35 __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 +0100[diff] [blame]45
FUJITA Tomonori38621532006-12-22 09:43:51 +0100[diff] [blame]46 __u32 padding;
FUJITA Tomonori45977d0e2006-12-20 11:19:32 +0100[diff] [blame]47};
48
49#ifdef __KERNEL__
50
Jens Axboe3d6392c2007-07-09 12:38:05 +0200[diff] [blame]51#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 +0200[diff] [blame]56 struct list_head list;
FUJITA Tomonorid351af02007-07-09 12:40:35 +0200[diff] [blame]57 struct request_queue *queue;
Jens Axboe3d6392c2007-07-09 12:38:05 +0200[diff] [blame]58};
59
James Bottomley39dca552007-07-20 18:22:17 -0500[diff] [blame^]60extern int bsg_register_queue(struct request_queue *, struct device *, const char *);
FUJITA Tomonorid351af02007-07-09 12:40:35 +0200[diff] [blame]61extern void bsg_unregister_queue(struct request_queue *);
Jens Axboe3d6392c2007-07-09 12:38:05 +0200[diff] [blame]62#else
James Bottomley39dca552007-07-20 18:22:17 -0500[diff] [blame^]63#define bsg_register_queue(disk, dev, name) (0)
FUJITA Tomonorid351af02007-07-09 12:40:35 +0200[diff] [blame]64#define bsg_unregister_queue(disk) do { } while (0)
Jens Axboe3d6392c2007-07-09 12:38:05 +0200[diff] [blame]65#endif
66
FUJITA Tomonori45977d0e2006-12-20 11:19:32 +0100[diff] [blame]67#endif /* __KERNEL__ */
68
Jens Axboe3d6392c2007-07-09 12:38:05 +0200[diff] [blame]69#endif