| 1 |
13 |
serginhofr |
#ifndef BSG_H
|
| 2 |
|
|
#define BSG_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 |
|
|
|
| 20 |
|
|
struct 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 /* BSG_H */
|
