diff options
| author | Cornelia Huck <cornelia.huck@de.ibm.com> | 2008-07-14 09:59:05 +0200 |
|---|---|---|
| committer | Heiko Carstens <heiko.carstens@de.ibm.com> | 2008-07-14 10:02:12 +0200 |
| commit | 9d92a7e1b0d095c8be96ce5e592c6c5541684631 (patch) | |
| tree | 22cfca810de07a7d7f87f17a89de0ae10d462038 /drivers/s390/cio/schid.h | |
| parent | 683c5418e6ac9f40f925dab6f547a5b0a4ad43c6 (diff) | |
[S390] cio: Add chsc subchannel driver.
This patch adds a driver for subchannels of type chsc.
A device /dev/chsc is created which may be used to issue ioctls to:
- obtain information about the machine's I/O configuration
- dynamically change the machine's I/O configuration via
asynchronous chsc commands
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio/schid.h')
| -rw-r--r-- | drivers/s390/cio/schid.h | 26 |
1 files changed, 0 insertions, 26 deletions
diff --git a/drivers/s390/cio/schid.h b/drivers/s390/cio/schid.h deleted file mode 100644 index 54328fec5ad..00000000000 --- a/drivers/s390/cio/schid.h +++ /dev/null @@ -1,26 +0,0 @@ -#ifndef S390_SCHID_H -#define S390_SCHID_H - -struct subchannel_id { - __u32 reserved:13; - __u32 ssid:2; - __u32 one:1; - __u32 sch_no:16; -} __attribute__ ((packed,aligned(4))); - - -/* Helper function for sane state of pre-allocated subchannel_id. */ -static inline void -init_subchannel_id(struct subchannel_id *schid) -{ - memset(schid, 0, sizeof(struct subchannel_id)); - schid->one = 1; -} - -static inline int -schid_equal(struct subchannel_id *schid1, struct subchannel_id *schid2) -{ - return !memcmp(schid1, schid2, sizeof(struct subchannel_id)); -} - -#endif /* S390_SCHID_H */ |