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authorCornelia Huck <cohuck@de.ibm.com>2006-01-06 11:19:25 +0300
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-06 19:33:52 +0300
commitfb6958a594da49ece869793e6ec163b89fc5f79f (patch)
tree0746cc23ab13a059f9a34d7fc134aaf6410d07b8 /drivers/s390/cio/css.h
parent678a395b356a98368a93c3640252502b70c3676f (diff)
downloadlinux-fb6958a594da49ece869793e6ec163b89fc5f79f.tar.xz
[PATCH] s390: multiple subchannel sets support
Add support for multiple subchannel sets. Works with arbitrary devices in subchannel set 1 and is transparent to device drivers. Although currently only two subchannel sets are available, this will work with the architectured maximum number of subchannel sets as well. Signed-off-by: Cornelia Huck <cohuck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/s390/cio/css.h')
-rw-r--r--drivers/s390/cio/css.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/s390/cio/css.h b/drivers/s390/cio/css.h
index b74659cab0af..251ebd7a7d3a 100644
--- a/drivers/s390/cio/css.h
+++ b/drivers/s390/cio/css.h
@@ -77,6 +77,7 @@ struct ccw_device_private {
unsigned long registered;
__u16 devno; /* device number */
__u16 sch_no; /* subchannel number */
+ __u8 ssid; /* subchannel set id */
__u8 imask; /* lpm mask for SNID/SID/SPGID */
int iretry; /* retry counter SNID/SID/SPGID */
struct {
@@ -135,6 +136,7 @@ extern int css_init_done;
extern int for_each_subchannel(int(*fn)(struct subchannel_id, void *), void *);
#define __MAX_SUBCHANNEL 65535
+#define __MAX_SSID 3
#define __MAX_CHPID 255
#define __MAX_CSSID 0