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1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */2#ifndef _UAPIBSG_H3#define _UAPIBSG_H4 5#include <linux/types.h>6 7#define BSG_PROTOCOL_SCSI 08 9#define BSG_SUB_PROTOCOL_SCSI_CMD 010#define BSG_SUB_PROTOCOL_SCSI_TMF 111#define BSG_SUB_PROTOCOL_SCSI_TRANSPORT 212 13/*14 * For flag constants below:15 * sg.h sg_io_hdr also has bits defined for it's flags member. These16 * two flag values (0x10 and 0x20) have the same meaning in sg.h . For17 * 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 0x2021 22struct 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 task26 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 else39 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