diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/scsi')
| -rw-r--r-- | sysdeps/unix/sysv/linux/scsi/sg.h | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/sysdeps/unix/sysv/linux/scsi/sg.h b/sysdeps/unix/sysv/linux/scsi/sg.h index 077ccd338d..246f56f5b9 100644 --- a/sysdeps/unix/sysv/linux/scsi/sg.h +++ b/sysdeps/unix/sysv/linux/scsi/sg.h @@ -34,7 +34,7 @@ /* Same structure as used by readv() Linux system call. It defines one scatter-gather element. */ typedef struct sg_iovec -{ +{ void * iov_base; /* Starting address */ size_t iov_len; /* Length in bytes */ } sg_iovec_t; @@ -42,11 +42,12 @@ typedef struct sg_iovec typedef struct sg_io_hdr { - char interface_id; /* [i] 'S' for SCSI generic (required) */ + 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 iovec_count; /* [i] 0 implies no scatter gather */ unsigned char mx_sb_len; /* [i] max length to write to sbp */ int dxfer_direction; /* [i] data transfer direction */ + 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 */ @@ -166,9 +167,13 @@ typedef struct sg_req_info { #define SG_GET_VERSION_NUM 0x2282 /* Example: version 2.1.34 yields 20134 */ -/* Returns -EBUSY if occupied else takes as input: 0 -> do nothing, - 1 -> device reset or 2 -> bus reset (may not be activated yet) */ +/* Returns -EBUSY if occupied. 3rd argument pointer to int (see next) */ #define SG_SCSI_RESET 0x2284 +/* Associated values that can be given to SG_SCSI_RESET follow */ +#define SG_SCSI_RESET_NOTHING 0 +#define SG_SCSI_RESET_DEVICE 1 +#define SG_SCSI_RESET_BUS 2 +#define SG_SCSI_RESET_HOST 3 /* synchronous SCSI command ioctl, (only in version 3 interface) */ #define SG_IO 0x2285 /* similar effect as write() followed by read() */ @@ -243,7 +248,7 @@ struct sg_header /* IOCTLs: The following are not required (or ignored) when the sg_io_hdr_t - interface is used. That are kept for backward compatibility with + interface is used. They are kept for backward compatibility with the original and version 2 drivers. */ #define SG_SET_TIMEOUT 0x2201 /* Set timeout; *(int *)arg==timeout. */ |