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6f52b16c | 1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
607ca46e DH |
2 | #ifndef _UAPIBSG_H |
3 | #define _UAPIBSG_H | |
4 | ||
5 | #include <linux/types.h> | |
6 | ||
7 | #define BSG_PROTOCOL_SCSI 0 | |
8 | ||
9 | #define BSG_SUB_PROTOCOL_SCSI_CMD 0 | |
10 | #define BSG_SUB_PROTOCOL_SCSI_TMF 1 | |
11 | #define BSG_SUB_PROTOCOL_SCSI_TRANSPORT 2 | |
12 | ||
13 | /* | |
d1515613 DG |
14 | * For flag constants below: |
15 | * sg.h sg_io_hdr also has bits defined for it's flags member. These | |
16 | * two flag values (0x10 and 0x20) have the same meaning in sg.h . For | |
17 | * bsg the BSG_FLAG_Q_AT_HEAD flag is ignored since it is the deafult. | |
607ca46e | 18 | */ |
d1515613 DG |
19 | #define BSG_FLAG_Q_AT_TAIL 0x10 /* default is Q_AT_HEAD */ |
20 | #define BSG_FLAG_Q_AT_HEAD 0x20 | |
607ca46e DH |
21 | |
22 | struct sg_io_v4 { | |
23 | __s32 guard; /* [i] 'Q' to differentiate from v3 */ | |
24 | __u32 protocol; /* [i] 0 -> SCSI , .... */ | |
25 | __u32 subprotocol; /* [i] 0 -> SCSI command, 1 -> SCSI task | |
26 | management function, .... */ | |
27 | ||
28 | __u32 request_len; /* [i] in bytes */ | |
29 | __u64 request; /* [i], [*i] {SCSI: cdb} */ | |
30 | __u64 request_tag; /* [i] {SCSI: task tag (only if flagged)} */ | |
31 | __u32 request_attr; /* [i] {SCSI: task attribute} */ | |
32 | __u32 request_priority; /* [i] {SCSI: task priority} */ | |
33 | __u32 request_extra; /* [i] {spare, for padding} */ | |
34 | __u32 max_response_len; /* [i] in bytes */ | |
35 | __u64 response; /* [i], [*o] {SCSI: (auto)sense data} */ | |
36 | ||
37 | /* "dout_": data out (to device); "din_": data in (from device) */ | |
38 | __u32 dout_iovec_count; /* [i] 0 -> "flat" dout transfer else | |
39 | dout_xfer points to array of iovec */ | |
40 | __u32 dout_xfer_len; /* [i] bytes to be transferred to device */ | |
41 | __u32 din_iovec_count; /* [i] 0 -> "flat" din transfer */ | |
42 | __u32 din_xfer_len; /* [i] bytes to be transferred from device */ | |
43 | __u64 dout_xferp; /* [i], [*i] */ | |
44 | __u64 din_xferp; /* [i], [*o] */ | |
45 | ||
46 | __u32 timeout; /* [i] units: millisecond */ | |
47 | __u32 flags; /* [i] bit mask */ | |
48 | __u64 usr_ptr; /* [i->o] unused internally */ | |
49 | __u32 spare_in; /* [i] */ | |
50 | ||
51 | __u32 driver_status; /* [o] 0 -> ok */ | |
52 | __u32 transport_status; /* [o] 0 -> ok */ | |
53 | __u32 device_status; /* [o] {SCSI: command completion status} */ | |
54 | __u32 retry_delay; /* [o] {SCSI: status auxiliary information} */ | |
55 | __u32 info; /* [o] additional information */ | |
56 | __u32 duration; /* [o] time to complete, in milliseconds */ | |
57 | __u32 response_len; /* [o] bytes of response actually written */ | |
58 | __s32 din_resid; /* [o] din_xfer_len - actual_din_xfer_len */ | |
59 | __s32 dout_resid; /* [o] dout_xfer_len - actual_dout_xfer_len */ | |
60 | __u64 generated_tag; /* [o] {SCSI: transport generated task tag} */ | |
61 | __u32 spare_out; /* [o] */ | |
62 | ||
63 | __u32 padding; | |
64 | }; | |
65 | ||
66 | ||
67 | #endif /* _UAPIBSG_H */ |