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authorDavid Howells <dhowells@redhat.com>2012-10-13 05:46:48 -0400
committerDavid Howells <dhowells@redhat.com>2012-10-13 05:46:48 -0400
commit607ca46e97a1b6594b29647d98a32d545c24bdff (patch)
tree30f4c0784bfddb57332cdc0678bd06d1e77fa185 /include/uapi/linux/bsg.h
parent08cce05c5a91f5017f4edc9866cf026908c73f9f (diff)
UAPI: (Scripted) Disintegrate include/linux
Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Michael Kerrisk <mtk.manpages@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dave Jones <davej@redhat.com>
Diffstat (limited to 'include/uapi/linux/bsg.h')
-rw-r--r--include/uapi/linux/bsg.h65
1 files changed, 65 insertions, 0 deletions
diff --git a/include/uapi/linux/bsg.h b/include/uapi/linux/bsg.h
new file mode 100644
index 000000000000..7a12e1c0f371
--- /dev/null
+++ b/include/uapi/linux/bsg.h
@@ -0,0 +1,65 @@
1#ifndef _UAPIBSG_H
2#define _UAPIBSG_H
3
4#include <linux/types.h>
5
6#define BSG_PROTOCOL_SCSI 0
7
8#define BSG_SUB_PROTOCOL_SCSI_CMD 0
9#define BSG_SUB_PROTOCOL_SCSI_TMF 1
10#define BSG_SUB_PROTOCOL_SCSI_TRANSPORT 2
11
12/*
13 * For flags member below
14 * sg.h sg_io_hdr also has bits defined for it's flags member. However
15 * none of these bits are implemented/used by bsg. The bits below are
16 * allocated to not conflict with sg.h ones anyway.
17 */
18#define BSG_FLAG_Q_AT_TAIL 0x10 /* default, == 0 at this bit, is Q_AT_HEAD */
19
20struct sg_io_v4 {
21 __s32 guard; /* [i] 'Q' to differentiate from v3 */
22 __u32 protocol; /* [i] 0 -> SCSI , .... */
23 __u32 subprotocol; /* [i] 0 -> SCSI command, 1 -> SCSI task
24 management function, .... */
25
26 __u32 request_len; /* [i] in bytes */
27 __u64 request; /* [i], [*i] {SCSI: cdb} */
28 __u64 request_tag; /* [i] {SCSI: task tag (only if flagged)} */
29 __u32 request_attr; /* [i] {SCSI: task attribute} */
30 __u32 request_priority; /* [i] {SCSI: task priority} */
31 __u32 request_extra; /* [i] {spare, for padding} */
32 __u32 max_response_len; /* [i] in bytes */
33 __u64 response; /* [i], [*o] {SCSI: (auto)sense data} */
34
35 /* "dout_": data out (to device); "din_": data in (from device) */
36 __u32 dout_iovec_count; /* [i] 0 -> "flat" dout transfer else
37 dout_xfer points to array of iovec */
38 __u32 dout_xfer_len; /* [i] bytes to be transferred to device */
39 __u32 din_iovec_count; /* [i] 0 -> "flat" din transfer */
40 __u32 din_xfer_len; /* [i] bytes to be transferred from device */
41 __u64 dout_xferp; /* [i], [*i] */
42 __u64 din_xferp; /* [i], [*o] */
43
44 __u32 timeout; /* [i] units: millisecond */
45 __u32 flags; /* [i] bit mask */
46 __u64 usr_ptr; /* [i->o] unused internally */
47 __u32 spare_in; /* [i] */
48
49 __u32 driver_status; /* [o] 0 -> ok */
50 __u32 transport_status; /* [o] 0 -> ok */
51 __u32 device_status; /* [o] {SCSI: command completion status} */
52 __u32 retry_delay; /* [o] {SCSI: status auxiliary information} */
53 __u32 info; /* [o] additional information */
54 __u32 duration; /* [o] time to complete, in milliseconds */
55 __u32 response_len; /* [o] bytes of response actually written */
56 __s32 din_resid; /* [o] din_xfer_len - actual_din_xfer_len */
57 __s32 dout_resid; /* [o] dout_xfer_len - actual_dout_xfer_len */
58 __u64 generated_tag; /* [o] {SCSI: transport generated task tag} */
59 __u32 spare_out; /* [o] */
60
61 __u32 padding;
62};
63
64
65#endif /* _UAPIBSG_H */