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| author | Cornelia Huck <cohuck@de.ibm.com> | 2006-01-06 00:19:23 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-06 08:33:51 -0800 |
| commit | a28c69448154a0901e8815922030c5dcd2f8e388 (patch) | |
| tree | 532ac1d4abc9cb9317bdfabc09b225ef616dd07b /drivers/s390/cio/css.h | |
| parent | f97a56fb768e5fe9cd07c56ca47870136bb5530c (diff) | |
| download | op-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.h | 25 |
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 *); |
