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authorKay Sievers <kay.sievers@vrfy.org>2008-05-16 12:52:42 +0200
committerKay Sievers <kay.sievers@vrfy.org>2008-05-16 12:52:42 +0200
commit53ba69a0c2c48ad87cc597518f529812c9a6a69e (patch)
tree652cd679a7187df3f14d9e31d6b84c0d80950834 /extras/scsi_id
parent4cd71da5603898cff68a31774be570750d7fd659 (diff)
scsi_id: add bsg.h
Diffstat (limited to 'extras/scsi_id')
-rw-r--r--extras/scsi_id/bsg.h84
1 files changed, 84 insertions, 0 deletions
diff --git a/extras/scsi_id/bsg.h b/extras/scsi_id/bsg.h
new file mode 100644
index 0000000000..cf0303a606
--- /dev/null
+++ b/extras/scsi_id/bsg.h
@@ -0,0 +1,84 @@
+#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} */
+ __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;
+};
+
+#ifdef __KERNEL__
+
+#if defined(CONFIG_BLK_DEV_BSG)
+struct bsg_class_device {
+ struct device *class_dev;
+ struct device *parent;
+ int minor;
+ struct request_queue *queue;
+ struct kref ref;
+ void (*release)(struct device *);
+};
+
+extern int bsg_register_queue(struct request_queue *q,
+ struct device *parent, const char *name,
+ void (*release)(struct device *));
+extern void bsg_unregister_queue(struct request_queue *);
+#else
+static inline int bsg_register_queue(struct request_queue *q,
+ struct device *parent, const char *name,
+ void (*release)(struct device *))
+{
+ return 0;
+}
+static inline void bsg_unregister_queue(struct request_queue *q)
+{
+}
+#endif
+
+#endif /* __KERNEL__ */
+
+#endif