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| author | Cornelia Huck <cornelia.huck@de.ibm.com> | 2008-07-14 09:58:58 +0200 |
|---|---|---|
| committer | Heiko Carstens <heiko.carstens@de.ibm.com> | 2008-07-14 10:02:10 +0200 |
| commit | 3a3fc29a6d0626fb4897b7391c4e956efbacd394 (patch) | |
| tree | 7107a7883f44c6350d8d85bab7a1871b6cb342e6 /include/asm-s390/isc.h | |
| parent | [S390] cio: Get rid of css_characteristics_avail. (diff) | |
| download | linux-3a3fc29a6d0626fb4897b7391c4e956efbacd394.tar.xz linux-3a3fc29a6d0626fb4897b7391c4e956efbacd394.zip | |
[S390] cio: Introduce abstract isc definitions.
Replace the numeric values for I/O interruption subclass usage
with abstract definitions and collect them all in asm/isc.h.
This gives us a better overview of which iscs are actually used
and makes it possible to better spread out isc usage in the
future.
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 '')
| -rw-r--r-- | include/asm-s390/isc.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/asm-s390/isc.h b/include/asm-s390/isc.h new file mode 100644 index 000000000000..533a1372234a --- /dev/null +++ b/include/asm-s390/isc.h @@ -0,0 +1,18 @@ +#ifndef _ASM_S390_ISC_H +#define _ASM_S390_ISC_H + +/* + * I/O interruption subclasses used by drivers. + * Please add all used iscs here so that it is possible to distribute + * isc usage between drivers. + * Reminder: 0 is highest priority, 7 lowest. + */ +#define MAX_ISC 7 + +/* Regular I/O interrupts. */ +#define IO_SCH_ISC 3 /* regular I/O subchannels */ +#define CONSOLE_ISC 1 /* console I/O subchannel */ +/* Adapter interrupts. */ +#define QDIO_AIRQ_ISC IO_SCH_ISC /* I/O subchannel in qdio mode */ + +#endif /* _ASM_S390_ISC_H */ |