[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>
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 @@
__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 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 *);