commit 196339f1733726ffd69ab81ec1c66678585f5846
author Stefan Weinhuber <wein@de.ibm.com> Fri Oct 29 16:50:43 2010 +0200
committer Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> Fri Oct 29 16:50:50 2010 +0200
tree 2974211770a2d0ead128f80fef972748673e7e3c
parent b25c477b3456ce87a5938d2ea511bf13187d0f0d

[S390] dasd: provide a Sense Path Group ID ioctl

The BIODASDSNID ioctl executes a 'Sense Path Group ID'
command on a DASD ECKD device. The returned path group data
allows user space programs to determine path state and
path group ID of the channel paths to the device.

Signed-off-by: Stefan Weinhuber <wein@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

drivers/s390/block/dasd_eckd.h

diff --git a/drivers/s390/block/dasd_eckd.h b/drivers/s390/block/dasd_eckd.h
index 0eb4965..12097c2 100644
--- a/drivers/s390/block/dasd_eckd.h
+++ b/drivers/s390/block/dasd_eckd.h
@@ -27,6 +27,7 @@
 #define DASD_ECKD_CCW_WRITE_CKD		 0x1d
 #define DASD_ECKD_CCW_READ_CKD		 0x1e
 #define DASD_ECKD_CCW_PSF		 0x27
+#define DASD_ECKD_CCW_SNID		 0x34
 #define DASD_ECKD_CCW_RSSD		 0x3e
 #define DASD_ECKD_CCW_LOCATE_RECORD	 0x47
 #define DASD_ECKD_CCW_SNSS		 0x54