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| author | Sebastian Ott <sebott@linux.vnet.ibm.com> | 2011-03-15 19:08:24 +0300 |
|---|---|---|
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2011-03-15 19:08:23 +0300 |
| commit | dbda8ce5407c731a0108a35db3e058d5d350dd80 (patch) | |
| tree | 3bcf6fbb2d8e0e501c73fe718b6c23ee20b0a06b /drivers/s390/cio/ioasm.h | |
| parent | 9e6f9f851cfa41f42f8985e0b82a54b1b28d3465 (diff) | |
| download | linux-dbda8ce5407c731a0108a35db3e058d5d350dd80.tar.xz | |
[S390] cio: move asms to generic header
The ssch and csch functions are not I/O subchannel specific,
thus move them from io_sch.h to ioasm.h
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio/ioasm.h')
| -rw-r--r-- | drivers/s390/cio/ioasm.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/s390/cio/ioasm.h b/drivers/s390/cio/ioasm.h index fac06155773f..4d80fc67a06b 100644 --- a/drivers/s390/cio/ioasm.h +++ b/drivers/s390/cio/ioasm.h @@ -3,6 +3,8 @@ #include <asm/chpid.h> #include <asm/schid.h> +#include "orb.h" +#include "cio.h" /* * TPI info structure @@ -87,6 +89,38 @@ static inline int tsch(struct subchannel_id schid, struct irb *addr) return ccode; } +static inline int ssch(struct subchannel_id schid, union orb *addr) +{ + register struct subchannel_id reg1 asm("1") = schid; + int ccode = -EIO; + + asm volatile( + " ssch 0(%2)\n" + "0: ipm %0\n" + " srl %0,28\n" + "1:\n" + EX_TABLE(0b, 1b) + : "+d" (ccode) + : "d" (reg1), "a" (addr), "m" (*addr) + : "cc", "memory"); + return ccode; +} + +static inline int csch(struct subchannel_id schid) +{ + register struct subchannel_id reg1 asm("1") = schid; + int ccode; + + asm volatile( + " csch\n" + " ipm %0\n" + " srl %0,28" + : "=d" (ccode) + : "d" (reg1) + : "cc"); + return ccode; +} + static inline int tpi(struct tpi_info *addr) { int ccode; |