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authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/include/uapi/linux/bsg.h
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/include/uapi/linux/bsg.h')
-rw-r--r--kernel/include/uapi/linux/bsg.h66
1 files changed, 66 insertions, 0 deletions
diff --git a/kernel/include/uapi/linux/bsg.h b/kernel/include/uapi/linux/bsg.h
new file mode 100644
index 000000000..02986cf8b
--- /dev/null
+++ b/kernel/include/uapi/linux/bsg.h
@@ -0,0 +1,66 @@
+#ifndef _UAPIBSG_H
+#define _UAPIBSG_H
+
+#include <linux/types.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
+
+/*
+ * 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;
+};
+
+
+#endif /* _UAPIBSG_H */