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authorCornelia Huck <cohuck@de.ibm.com>2006-01-06 00:19:23 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-06 08:33:51 -0800
commita28c69448154a0901e8815922030c5dcd2f8e388 (patch)
tree532ac1d4abc9cb9317bdfabc09b225ef616dd07b /drivers/s390/cio/css.h
parentf97a56fb768e5fe9cd07c56ca47870136bb5530c (diff)
downloadop-kernel-dev-a28c69448154a0901e8815922030c5dcd2f8e388.zip
op-kernel-dev-a28c69448154a0901e8815922030c5dcd2f8e388.tar.gz
[PATCH] s390: introduce struct channel_subsystem
struct channel_subsystem encapsulates several per channel subsystem properties, like status of chpids or the global path group id. 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.h25
1 files changed, 21 insertions, 4 deletions
diff --git a/drivers/s390/cio/css.h b/drivers/s390/cio/css.h
index 71efca2..b74659c 100644
--- a/drivers/s390/cio/css.h
+++ b/drivers/s390/cio/css.h
@@ -35,19 +35,25 @@ struct path_state {
__u8 resvd : 3; /* reserved */
} __attribute__ ((packed));
+struct extended_cssid {
+ u8 version;
+ u8 cssid;
+} __attribute__ ((packed));
+
struct pgid {
union {
__u8 fc; /* SPID function code */
struct path_state ps; /* SNID path state */
} inf;
- __u32 cpu_addr : 16; /* CPU address */
+ union {
+ __u32 cpu_addr : 16; /* CPU address */
+ struct extended_cssid ext_cssid;
+ } pgid_high;
__u32 cpu_id : 24; /* CPU identification */
__u32 cpu_model : 16; /* CPU model */
__u32 tod_high; /* high word TOD clock */
} __attribute__ ((packed));
-extern struct pgid global_pgid;
-
#define MAX_CIWS 8
/*
@@ -129,9 +135,20 @@ extern int css_init_done;
extern int for_each_subchannel(int(*fn)(struct subchannel_id, void *), void *);
#define __MAX_SUBCHANNEL 65535
+#define __MAX_CHPID 255
+#define __MAX_CSSID 0
+
+struct channel_subsystem {
+ u8 cssid;
+ int valid;
+ struct channel_path *chps[__MAX_CHPID];
+ struct device device;
+ struct pgid global_pgid;
+};
+#define to_css(dev) container_of(dev, struct channel_subsystem, device)
extern struct bus_type css_bus_type;
-extern struct device css_bus_device;
+extern struct channel_subsystem *css[];
/* Some helper functions for disconnected state. */
int device_is_disconnected(struct subchannel *);
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