13bd59a111
Don't define an empty struct bsg_class_device if !CONFIG_BLK_DEV_BSG. It's embedded in struct request_queue, but there we have #if defined(CONFIG_BLK_DEV_BSG) struct bsg_class_device bsg_dev; #endif anyway. Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
69 lines
2.2 KiB
C
69 lines
2.2 KiB
C
#ifndef BSG_H
|
|
#define BSG_H
|
|
|
|
#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
|
|
|
|
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} */
|
|
__u32 request_attr; /* [i] {SCSI: task attribute} */
|
|
__u32 request_tag; /* [i] {SCSI: task tag (only if flagged)} */
|
|
__u32 request_priority; /* [i] {SCSI: task priority} */
|
|
__u32 max_response_len; /* [i] in bytes */
|
|
__u64 response; /* [i], [*o] {SCSI: (auto)sense data} */
|
|
|
|
/* "din_" for data in (from device); "dout_" for data out (to device) */
|
|
__u32 dout_xfer_len; /* [i] bytes to be transferred to device */
|
|
__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] actual_din_xfer_len - din_xfer_len */
|
|
__u32 generated_tag; /* [o] {SCSI: task tag that transport chose} */
|
|
__u32 spare_out; /* [o] */
|
|
|
|
__u32 padding;
|
|
};
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
#if defined(CONFIG_BLK_DEV_BSG)
|
|
struct bsg_class_device {
|
|
struct class_device *class_dev;
|
|
struct device *dev;
|
|
int minor;
|
|
struct list_head list;
|
|
struct request_queue *queue;
|
|
};
|
|
|
|
extern int bsg_register_queue(struct request_queue *, const char *);
|
|
extern void bsg_unregister_queue(struct request_queue *);
|
|
#else
|
|
#define bsg_register_queue(disk, name) (0)
|
|
#define bsg_unregister_queue(disk) do { } while (0)
|
|
#endif
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
#endif
|