| Christopher Ferris | 2598113 | 2017-11-14 16:53:49 -0800 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
| Ben Cheng | 30692c6 | 2013-10-15 18:26:18 -0700 | [diff] [blame] | 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 | /* |
| Christopher Ferris | 7c0b639 | 2015-01-23 15:34:26 -0800 | [diff] [blame] | 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. |
| Ben Cheng | 30692c6 | 2013-10-15 18:26:18 -0700 | [diff] [blame] | 18 | */ |
| Christopher Ferris | 7c0b639 | 2015-01-23 15:34:26 -0800 | [diff] [blame] | 19 | #define BSG_FLAG_Q_AT_TAIL 0x10 /* default is Q_AT_HEAD */ |
| 20 | #define BSG_FLAG_Q_AT_HEAD 0x20 |
| Ben Cheng | 30692c6 | 2013-10-15 18:26:18 -0700 | [diff] [blame] | 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 */ |