summaryrefslogtreecommitdiffstats
path: root/include/linux/bsg.h
diff options
context:
space:
mode:
authorFUJITA Tomonori <tomof@acm.org>2007-07-29 23:00:46 +0900
committerJames Bottomley <jejb@mulgrave.localdomain>2007-07-31 10:43:05 -0500
commit0c6a89ba640d28e1dcd7fd1a217d2cfb92ae4953 (patch)
treef222695dfb6def9299717dd23f729c15fdd96919 /include/linux/bsg.h
parentdb47c2d8d98a76083a88ec53f44cc74c48dfd1e8 (diff)
downloadop-kernel-dev-0c6a89ba640d28e1dcd7fd1a217d2cfb92ae4953.zip
op-kernel-dev-0c6a89ba640d28e1dcd7fd1a217d2cfb92ae4953.tar.gz
[SCSI] bsg: update sg_io_v4 structure
This updates sg_io_v4 structure (based on Doug's RFC, release 1.3). The major changes are: - add dout_resid field - increase tag size to 64 bits to comply with SAM-4 and SRP - add dout_iovec_count and din_iovec_count dout_iovec_count and din_iovec_count aren't supported now. I'm not sure whether they will be supported or not but they were added for the possible future changes. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'include/linux/bsg.h')
-rw-r--r--include/linux/bsg.h13
1 files changed, 9 insertions, 4 deletions
diff --git a/include/linux/bsg.h b/include/linux/bsg.h
index 102dc09..60e377b52 100644
--- a/include/linux/bsg.h
+++ b/include/linux/bsg.h
@@ -15,14 +15,18 @@ struct sg_io_v4 {
__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_tag; /* [i] {SCSI: task tag (only if flagged)} */
__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} */
- /* "din_" for data in (from device); "dout_" for data out (to device) */
+ /* "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] */
@@ -39,8 +43,9 @@ struct sg_io_v4 {
__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} */
+ __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;
OpenPOWER on IntegriCloud