1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2*4882a593Smuzhiyun #ifndef _UAPIBSG_H 3*4882a593Smuzhiyun #define _UAPIBSG_H 4*4882a593Smuzhiyun 5*4882a593Smuzhiyun #include <linux/types.h> 6*4882a593Smuzhiyun 7*4882a593Smuzhiyun #define BSG_PROTOCOL_SCSI 0 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun #define BSG_SUB_PROTOCOL_SCSI_CMD 0 10*4882a593Smuzhiyun #define BSG_SUB_PROTOCOL_SCSI_TMF 1 11*4882a593Smuzhiyun #define BSG_SUB_PROTOCOL_SCSI_TRANSPORT 2 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun /* 14*4882a593Smuzhiyun * For flag constants below: 15*4882a593Smuzhiyun * sg.h sg_io_hdr also has bits defined for it's flags member. These 16*4882a593Smuzhiyun * two flag values (0x10 and 0x20) have the same meaning in sg.h . For 17*4882a593Smuzhiyun * bsg the BSG_FLAG_Q_AT_HEAD flag is ignored since it is the deafult. 18*4882a593Smuzhiyun */ 19*4882a593Smuzhiyun #define BSG_FLAG_Q_AT_TAIL 0x10 /* default is Q_AT_HEAD */ 20*4882a593Smuzhiyun #define BSG_FLAG_Q_AT_HEAD 0x20 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun struct sg_io_v4 { 23*4882a593Smuzhiyun __s32 guard; /* [i] 'Q' to differentiate from v3 */ 24*4882a593Smuzhiyun __u32 protocol; /* [i] 0 -> SCSI , .... */ 25*4882a593Smuzhiyun __u32 subprotocol; /* [i] 0 -> SCSI command, 1 -> SCSI task 26*4882a593Smuzhiyun management function, .... */ 27*4882a593Smuzhiyun 28*4882a593Smuzhiyun __u32 request_len; /* [i] in bytes */ 29*4882a593Smuzhiyun __u64 request; /* [i], [*i] {SCSI: cdb} */ 30*4882a593Smuzhiyun __u64 request_tag; /* [i] {SCSI: task tag (only if flagged)} */ 31*4882a593Smuzhiyun __u32 request_attr; /* [i] {SCSI: task attribute} */ 32*4882a593Smuzhiyun __u32 request_priority; /* [i] {SCSI: task priority} */ 33*4882a593Smuzhiyun __u32 request_extra; /* [i] {spare, for padding} */ 34*4882a593Smuzhiyun __u32 max_response_len; /* [i] in bytes */ 35*4882a593Smuzhiyun __u64 response; /* [i], [*o] {SCSI: (auto)sense data} */ 36*4882a593Smuzhiyun 37*4882a593Smuzhiyun /* "dout_": data out (to device); "din_": data in (from device) */ 38*4882a593Smuzhiyun __u32 dout_iovec_count; /* [i] 0 -> "flat" dout transfer else 39*4882a593Smuzhiyun dout_xfer points to array of iovec */ 40*4882a593Smuzhiyun __u32 dout_xfer_len; /* [i] bytes to be transferred to device */ 41*4882a593Smuzhiyun __u32 din_iovec_count; /* [i] 0 -> "flat" din transfer */ 42*4882a593Smuzhiyun __u32 din_xfer_len; /* [i] bytes to be transferred from device */ 43*4882a593Smuzhiyun __u64 dout_xferp; /* [i], [*i] */ 44*4882a593Smuzhiyun __u64 din_xferp; /* [i], [*o] */ 45*4882a593Smuzhiyun 46*4882a593Smuzhiyun __u32 timeout; /* [i] units: millisecond */ 47*4882a593Smuzhiyun __u32 flags; /* [i] bit mask */ 48*4882a593Smuzhiyun __u64 usr_ptr; /* [i->o] unused internally */ 49*4882a593Smuzhiyun __u32 spare_in; /* [i] */ 50*4882a593Smuzhiyun 51*4882a593Smuzhiyun __u32 driver_status; /* [o] 0 -> ok */ 52*4882a593Smuzhiyun __u32 transport_status; /* [o] 0 -> ok */ 53*4882a593Smuzhiyun __u32 device_status; /* [o] {SCSI: command completion status} */ 54*4882a593Smuzhiyun __u32 retry_delay; /* [o] {SCSI: status auxiliary information} */ 55*4882a593Smuzhiyun __u32 info; /* [o] additional information */ 56*4882a593Smuzhiyun __u32 duration; /* [o] time to complete, in milliseconds */ 57*4882a593Smuzhiyun __u32 response_len; /* [o] bytes of response actually written */ 58*4882a593Smuzhiyun __s32 din_resid; /* [o] din_xfer_len - actual_din_xfer_len */ 59*4882a593Smuzhiyun __s32 dout_resid; /* [o] dout_xfer_len - actual_dout_xfer_len */ 60*4882a593Smuzhiyun __u64 generated_tag; /* [o] {SCSI: transport generated task tag} */ 61*4882a593Smuzhiyun __u32 spare_out; /* [o] */ 62*4882a593Smuzhiyun 63*4882a593Smuzhiyun __u32 padding; 64*4882a593Smuzhiyun }; 65*4882a593Smuzhiyun 66*4882a593Smuzhiyun 67*4882a593Smuzhiyun #endif /* _UAPIBSG_H */ 68