[PATCH] x86_64 irq: Add constants for the reserved IRQ vectors.

For the ISA irqs we reserve 16 vectors.  This patch adds constants for
those vectors and modifies the code to use them.  Making the code a
little clearer and making it possible to move these vectors in the future.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 17 insertions, 1 deletions

diff --git a/include/asm-x86_64/hw_irq.h b/include/asm-x86_64/hw_irq.h
index 552df5f10a6d..dc395edc2f2a 100644
--- a/include/asm-x86_64/hw_irq.h
+++ b/include/asm-x86_64/hw_irq.h
@@ -35,6 +35,22 @@
 /*
  * Vectors 0x20-0x2f are used for ISA interrupts.
  */
+#define IRQ0_VECTOR             FIRST_EXTERNAL_VECTOR
+#define IRQ1_VECTOR             IRQ0_VECTOR + 1
+#define IRQ2_VECTOR             IRQ0_VECTOR + 2
+#define IRQ3_VECTOR             IRQ0_VECTOR + 3
+#define IRQ4_VECTOR             IRQ0_VECTOR + 4
+#define IRQ5_VECTOR             IRQ0_VECTOR + 5 
+#define IRQ6_VECTOR             IRQ0_VECTOR + 6
+#define IRQ7_VECTOR             IRQ0_VECTOR + 7
+#define IRQ8_VECTOR             IRQ0_VECTOR + 8
+#define IRQ9_VECTOR             IRQ0_VECTOR + 9
+#define IRQ10_VECTOR            IRQ0_VECTOR + 10
+#define IRQ11_VECTOR            IRQ0_VECTOR + 11
+#define IRQ12_VECTOR            IRQ0_VECTOR + 12
+#define IRQ13_VECTOR            IRQ0_VECTOR + 13
+#define IRQ14_VECTOR            IRQ0_VECTOR + 14
+#define IRQ15_VECTOR            IRQ0_VECTOR + 15
 
 /*
  * Special IRQ vectors used by the SMP architecture, 0xf0-0xff
@@ -69,7 +85,7 @@
  * we start at 0x31 to spread out vectors evenly between priority
  * levels. (0x80 is the syscall vector)
  */
-#define FIRST_DEVICE_VECTOR     0x31
+#define FIRST_DEVICE_VECTOR     (IRQ15_VECTOR + 2)
 #define FIRST_SYSTEM_VECTOR     0xef   /* duplicated in irq.h */