projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 607ca46e DH |
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 | /* | |
| d1515613 DG |
13 | * For flag constants below: |
| 14 | * sg.h sg_io_hdr also has bits defined for it's flags member. These | |
| 15 | * two flag values (0x10 and 0x20) have the same meaning in sg.h . For | |
| 16 | * bsg the BSG_FLAG_Q_AT_HEAD flag is ignored since it is the deafult. | |
| 607ca46e | 17 | */ |
| d1515613 DG |
18 | #define BSG_FLAG_Q_AT_TAIL 0x10 /* default is Q_AT_HEAD */ |
| 19 | #define BSG_FLAG_Q_AT_HEAD 0x20 | |
| 607ca46e DH |
20 | |
| 21 | struct sg_io_v4 { | |
| 22 | __s32 guard; /* [i] 'Q' to differentiate from v3 */ | |
| 23 | __u32 protocol; /* [i] 0 -> SCSI , .... */ | |
| 24 | __u32 subprotocol; /* [i] 0 -> SCSI command, 1 -> SCSI task | |
| 25 | management function, .... */ | |
| 26 | ||
| 27 | __u32 request_len; /* [i] in bytes */ | |
| 28 | __u64 request; /* [i], [*i] {SCSI: cdb} */ | |
| 29 | __u64 request_tag; /* [i] {SCSI: task tag (only if flagged)} */ | |
| 30 | __u32 request_attr; /* [i] {SCSI: task attribute} */ | |
| 31 | __u32 request_priority; /* [i] {SCSI: task priority} */ | |
| 32 | __u32 request_extra; /* [i] {spare, for padding} */ | |
| 33 | __u32 max_response_len; /* [i] in bytes */ | |
| 34 | __u64 response; /* [i], [*o] {SCSI: (auto)sense data} */ | |
| 35 | ||
| 36 | /* "dout_": data out (to device); "din_": data in (from device) */ | |
| 37 | __u32 dout_iovec_count; /* [i] 0 -> "flat" dout transfer else | |
| 38 | dout_xfer points to array of iovec */ | |
| 39 | __u32 dout_xfer_len; /* [i] bytes to be transferred to device */ | |
| 40 | __u32 din_iovec_count; /* [i] 0 -> "flat" din transfer */ | |
| 41 | __u32 din_xfer_len; /* [i] bytes to be transferred from device */ | |
| 42 | __u64 dout_xferp; /* [i], [*i] */ | |
| 43 | __u64 din_xferp; /* [i], [*o] */ | |
| 44 | ||
| 45 | __u32 timeout; /* [i] units: millisecond */ | |
| 46 | __u32 flags; /* [i] bit mask */ | |
| 47 | __u64 usr_ptr; /* [i->o] unused internally */ | |
| 48 | __u32 spare_in; /* [i] */ | |
| 49 | ||
| 50 | __u32 driver_status; /* [o] 0 -> ok */ | |
| 51 | __u32 transport_status; /* [o] 0 -> ok */ | |
| 52 | __u32 device_status; /* [o] {SCSI: command completion status} */ | |
| 53 | __u32 retry_delay; /* [o] {SCSI: status auxiliary information} */ | |
| 54 | __u32 info; /* [o] additional information */ | |
| 55 | __u32 duration; /* [o] time to complete, in milliseconds */ | |
| 56 | __u32 response_len; /* [o] bytes of response actually written */ | |
| 57 | __s32 din_resid; /* [o] din_xfer_len - actual_din_xfer_len */ | |
| 58 | __s32 dout_resid; /* [o] dout_xfer_len - actual_dout_xfer_len */ | |
| 59 | __u64 generated_tag; /* [o] {SCSI: transport generated task tag} */ | |
| 60 | __u32 spare_out; /* [o] */ | |
| 61 | ||
| 62 | __u32 padding; | |
| 63 | }; | |
| 64 | ||
| 65 | ||
| 66 | #endif /* _UAPIBSG_H */ |