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authorCornelia Huck <cornelia.huck@de.ibm.com>2008-07-14 09:58:58 +0200
committerHeiko Carstens <heiko.carstens@de.ibm.com>2008-07-14 10:02:10 +0200
commit3a3fc29a6d0626fb4897b7391c4e956efbacd394 (patch)
tree7107a7883f44c6350d8d85bab7a1871b6cb342e6 /include
parent75784c00876c88ca6e955c39cbb5d47cf408fd3c (diff)
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op-kernel-dev-3a3fc29a6d0626fb4897b7391c4e956efbacd394.tar.gz
[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 'include')
-rw-r--r--include/asm-s390/isc.h18
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 0000000..533a137
--- /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 */
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