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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-x86_64/irq.h
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'include/asm-x86_64/irq.h')
-rw-r--r--include/asm-x86_64/irq.h55
1 files changed, 55 insertions, 0 deletions
diff --git a/include/asm-x86_64/irq.h b/include/asm-x86_64/irq.h
new file mode 100644
index 000000000000..3af50b3c3b05
--- /dev/null
+++ b/include/asm-x86_64/irq.h
@@ -0,0 +1,55 @@
1#ifndef _ASM_IRQ_H
2#define _ASM_IRQ_H
3
4/*
5 * linux/include/asm/irq.h
6 *
7 * (C) 1992, 1993 Linus Torvalds, (C) 1997 Ingo Molnar
8 *
9 * IRQ/IPI changes taken from work by Thomas Radke
10 * <tomsoft@informatik.tu-chemnitz.de>
11 */
12
13#define TIMER_IRQ 0
14
15/*
16 * 16 8259A IRQ's, 208 potential APIC interrupt sources.
17 * Right now the APIC is mostly only used for SMP.
18 * 256 vectors is an architectural limit. (we can have
19 * more than 256 devices theoretically, but they will
20 * have to use shared interrupts)
21 * Since vectors 0x00-0x1f are used/reserved for the CPU,
22 * the usable vector space is 0x20-0xff (224 vectors)
23 */
24
25/*
26 * The maximum number of vectors supported by x86_64 processors
27 * is limited to 256. For processors other than x86_64, NR_VECTORS
28 * should be changed accordingly.
29 */
30#define NR_VECTORS 256
31
32#define FIRST_SYSTEM_VECTOR 0xef /* duplicated in hw_irq.h */
33
34#ifdef CONFIG_PCI_MSI
35#define NR_IRQS FIRST_SYSTEM_VECTOR
36#define NR_IRQ_VECTORS NR_IRQS
37#else
38#define NR_IRQS 224
39#define NR_IRQ_VECTORS 1024
40#endif
41
42static __inline__ int irq_canonicalize(int irq)
43{
44 return ((irq == 2) ? 9 : irq);
45}
46
47#ifdef CONFIG_X86_LOCAL_APIC
48#define ARCH_HAS_NMI_WATCHDOG /* See include/linux/nmi.h */
49#endif
50
51struct irqaction;
52struct pt_regs;
53int handle_IRQ_event(unsigned int, struct pt_regs *, struct irqaction *);
54
55#endif /* _ASM_IRQ_H */