diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /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.h | 55 |
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 | |||
42 | static __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 | |||
51 | struct irqaction; | ||
52 | struct pt_regs; | ||
53 | int handle_IRQ_event(unsigned int, struct pt_regs *, struct irqaction *); | ||
54 | |||
55 | #endif /* _ASM_IRQ_H */ | ||