1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
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 | /* |
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. |
18 | */ |
19 | #define BSG_FLAG_Q_AT_TAIL 0x10 /* default is Q_AT_HEAD */ |
20 | #define BSG_FLAG_Q_AT_HEAD 0x20 |
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 ; /* [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 */ |
68 | |