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| author | Cornelia Huck <cohuck@de.ibm.com> | 2006-01-06 00:19:25 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-06 08:33:52 -0800 |
| commit | fb6958a594da49ece869793e6ec163b89fc5f79f (patch) | |
| tree | 0746cc23ab13a059f9a34d7fc134aaf6410d07b8 /drivers/s390/cio/ioasm.h | |
| parent | 678a395b356a98368a93c3640252502b70c3676f (diff) | |
| download | op-kernel-dev-fb6958a594da49ece869793e6ec163b89fc5f79f.zip op-kernel-dev-fb6958a594da49ece869793e6ec163b89fc5f79f.tar.gz | |
[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/ioasm.h')
| -rw-r--r-- | drivers/s390/cio/ioasm.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/s390/cio/ioasm.h b/drivers/s390/cio/ioasm.h index 66c882e..62b0e2a 100644 --- a/drivers/s390/cio/ioasm.h +++ b/drivers/s390/cio/ioasm.h @@ -38,6 +38,35 @@ static inline int stsch(struct subchannel_id schid, return ccode; } +static inline int stsch_err(struct subchannel_id schid, + volatile struct schib *addr) +{ + int ccode; + + __asm__ __volatile__( + " lhi %0,%3\n" + " lr 1,%1\n" + " stsch 0(%2)\n" + "0: ipm %0\n" + " srl %0,28\n" + "1:\n" +#ifdef CONFIG_ARCH_S390X + ".section __ex_table,\"a\"\n" + " .align 8\n" + " .quad 0b,1b\n" + ".previous" +#else + ".section __ex_table,\"a\"\n" + " .align 4\n" + " .long 0b,1b\n" + ".previous" +#endif + : "=&d" (ccode) + : "d" (schid), "a" (addr), "K" (-EIO), "m" (*addr) + : "cc", "1" ); + return ccode; +} + static inline int msch(struct subchannel_id schid, volatile struct schib *addr) { |
