| /* |
| * Copyright (c) 2020, Mediatek Inc. All rights reserved. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| #ifndef UAPI_SCSI_IOCTL_H_ |
| #define UAPI_SCSI_IOCTL_H_ |
| |
| #ifndef SG_IO |
| /* synchronous SCSI command ioctl, (only in version 3 interface) */ |
| #define SG_IO 0x2285 /* similar effect as write() followed by read() */ |
| #endif |
| |
| #ifndef _UAPIBSG_H |
| #include <linux/types.h> |
| |
| #define DEF_TIMEOUT_MSEC (60000) |
| #define BSG_PROTOCOL_SCSI 0 |
| |
| #define BSG_SUB_PROTOCOL_SCSI_CMD 0 |
| #define BSG_SUB_PROTOCOL_SCSI_TMF 1 |
| #define BSG_SUB_PROTOCOL_SCSI_TRANSPORT 2 |
| |
| /* |
| * For flag constants below: |
| * sg.h sg_io_hdr also has bits defined for it's flags member. These |
| * two flag values (0x10 and 0x20) have the same meaning in sg.h . For |
| * bsg the BSG_FLAG_Q_AT_HEAD flag is ignored since it is the deafult. |
| */ |
| #define BSG_FLAG_Q_AT_TAIL 0x10 /* default is Q_AT_HEAD */ |
| #define BSG_FLAG_Q_AT_HEAD 0x20 |
| |
| struct sg_io_v4 { |
| __s32 guard; /* [i] 'Q' to differentiate from v3 */ |
| __u32 protocol; /* [i] 0 -> SCSI , .... */ |
| __u32 subprotocol; /* [i] 0 -> SCSI command, 1 -> SCSI task |
| management function, .... */ |
| |
| __u32 request_len; /* [i] in bytes */ |
| __u64 request; /* [i], [*i] {SCSI: cdb} */ |
| __u64 request_tag; /* [i] {SCSI: task tag (only if flagged)} */ |
| __u32 request_attr; /* [i] {SCSI: task attribute} */ |
| __u32 request_priority; /* [i] {SCSI: task priority} */ |
| __u32 request_extra; /* [i] {spare, for padding} */ |
| __u32 max_response_len; /* [i] in bytes */ |
| __u64 response; /* [i], [*o] {SCSI: (auto)sense data} */ |
| |
| /* "dout_": data out (to device); "din_": data in (from device) */ |
| __u32 dout_iovec_count; /* [i] 0 -> "flat" dout transfer else |
| dout_xfer points to array of iovec */ |
| __u32 dout_xfer_len; /* [i] bytes to be transferred to device */ |
| __u32 din_iovec_count; /* [i] 0 -> "flat" din transfer */ |
| __u32 din_xfer_len; /* [i] bytes to be transferred from device */ |
| __u64 dout_xferp; /* [i], [*i] */ |
| __u64 din_xferp; /* [i], [*o] */ |
| |
| __u32 timeout; /* [i] units: millisecond */ |
| __u32 flags; /* [i] bit mask */ |
| __u64 usr_ptr; /* [i->o] unused internally */ |
| __u32 spare_in; /* [i] */ |
| |
| __u32 driver_status; /* [o] 0 -> ok */ |
| __u32 transport_status; /* [o] 0 -> ok */ |
| __u32 device_status; /* [o] {SCSI: command completion status} */ |
| __u32 retry_delay; /* [o] {SCSI: status auxiliary information} */ |
| __u32 info; /* [o] additional information */ |
| __u32 duration; /* [o] time to complete, in milliseconds */ |
| __u32 response_len; /* [o] bytes of response actually written */ |
| __s32 din_resid; /* [o] din_xfer_len - actual_din_xfer_len */ |
| __s32 dout_resid; /* [o] dout_xfer_len - actual_dout_xfer_len */ |
| __u64 generated_tag; /* [o] {SCSI: transport generated task tag} */ |
| __u32 spare_out; /* [o] */ |
| |
| __u32 padding; |
| }; |
| |
| /* |
| * SCSI Generic v3 struct copied from include/scsi/sg.h |
| */ |
| typedef struct sg_io_hdr { |
| int interface_id; /* [i] 'S' for SCSI generic (required) */ |
| int dxfer_direction; /* [i] data transfer direction */ |
| unsigned char cmd_len; /* [i] SCSI command length ( <= 16 bytes) */ |
| unsigned char mx_sb_len; /* [i] max length to write to sbp */ |
| unsigned short int iovec_count; /* [i] 0 implies no scatter gather */ |
| unsigned int dxfer_len; /* [i] byte count of data transfer */ |
| void *dxferp; /* [i], [*io] points to data transfer memory |
| or scatter gather list */ |
| unsigned char *cmdp; /* [i], [*i] points to command to perform */ |
| unsigned char *sbp; /* [i], [*o] points to sense_buffer memory */ |
| unsigned int timeout; /* [i] MAX_UINT->no timeout (unit: millisec) */ |
| unsigned int flags; /* [i] 0 -> default, see SG_FLAG... */ |
| int pack_id; /* [i->o] unused internally (normally) */ |
| void *usr_ptr; /* [i->o] unused internally */ |
| unsigned char status; /* [o] scsi status */ |
| unsigned char masked_status;/* [o] shifted, masked scsi status */ |
| unsigned char msg_status; /* [o] messaging level data (optional) */ |
| unsigned char sb_len_wr; /* [o] byte count actually written to sbp */ |
| unsigned short int host_status; /* [o] errors from host adapter */ |
| unsigned short int driver_status;/* [o] errors from software driver */ |
| int resid; /* [o] dxfer_len - actual_transferred */ |
| unsigned int duration; /* [o] time taken by cmd (unit: millisec) */ |
| unsigned int info; /* [o] auxiliary information */ |
| } sg_io_hdr_t; |
| |
| #endif /* _UAPIBSG_H */ |
| #endif /* UAPI_SCSI_IOCTL_H_ */ |