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 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 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 */ 68