15d10b611f
This enables bsg to handle SCSI transport-level request like SAS
management protocol (SMP).
- add BSG_SUB_PROTOCOL_{SCSI_CMD, SCSI_TMF, SCSI_TRANSPORT} definitions.
- SCSI transport-level requests skip blk_verify_command().
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
70 lines
2.2 KiB
C
70 lines
2.2 KiB
C
#ifndef BSG_H
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#define BSG_H
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#define BSG_PROTOCOL_SCSI 0
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#define BSG_SUB_PROTOCOL_SCSI_CMD 0
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#define BSG_SUB_PROTOCOL_SCSI_TMF 1
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#define BSG_SUB_PROTOCOL_SCSI_TRANSPORT 2
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struct sg_io_v4 {
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__s32 guard; /* [i] 'Q' to differentiate from v3 */
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__u32 protocol; /* [i] 0 -> SCSI , .... */
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__u32 subprotocol; /* [i] 0 -> SCSI command, 1 -> SCSI task
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management function, .... */
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__u32 request_len; /* [i] in bytes */
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__u64 request; /* [i], [*i] {SCSI: cdb} */
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__u32 request_attr; /* [i] {SCSI: task attribute} */
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__u32 request_tag; /* [i] {SCSI: task tag (only if flagged)} */
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__u32 request_priority; /* [i] {SCSI: task priority} */
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__u32 max_response_len; /* [i] in bytes */
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__u64 response; /* [i], [*o] {SCSI: (auto)sense data} */
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/* "din_" for data in (from device); "dout_" for data out (to device) */
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__u32 dout_xfer_len; /* [i] bytes to be transferred to device */
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__u32 din_xfer_len; /* [i] bytes to be transferred from device */
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__u64 dout_xferp; /* [i], [*i] */
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__u64 din_xferp; /* [i], [*o] */
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__u32 timeout; /* [i] units: millisecond */
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__u32 flags; /* [i] bit mask */
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__u64 usr_ptr; /* [i->o] unused internally */
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__u32 spare_in; /* [i] */
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__u32 driver_status; /* [o] 0 -> ok */
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__u32 transport_status; /* [o] 0 -> ok */
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__u32 device_status; /* [o] {SCSI: command completion status} */
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__u32 retry_delay; /* [o] {SCSI: status auxiliary information} */
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__u32 info; /* [o] additional information */
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__u32 duration; /* [o] time to complete, in milliseconds */
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__u32 response_len; /* [o] bytes of response actually written */
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__s32 din_resid; /* [o] actual_din_xfer_len - din_xfer_len */
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__u32 generated_tag; /* [o] {SCSI: task tag that transport chose} */
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__u32 spare_out; /* [o] */
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__u32 padding;
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};
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#ifdef __KERNEL__
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#if defined(CONFIG_BLK_DEV_BSG)
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struct bsg_class_device {
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struct class_device *class_dev;
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struct device *dev;
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int minor;
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struct list_head list;
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struct request_queue *queue;
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};
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extern int bsg_register_queue(struct request_queue *, const char *);
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extern void bsg_unregister_queue(struct request_queue *);
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#else
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struct bsg_class_device { };
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#define bsg_register_queue(disk, name) (0)
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#define bsg_unregister_queue(disk) do { } while (0)
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#endif
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#endif /* __KERNEL__ */
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#endif
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