blob: 9db5a1b4f7b11c4602fbc2f208b1c655ac087ebe (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
#ifndef _ASM_IRQ_H
#define _ASM_IRQ_H
/*
* linux/include/asm/irq.h
*
* (C) 1992, 1993 Linus Torvalds, (C) 1997 Ingo Molnar
*
* IRQ/IPI changes taken from work by Thomas Radke
* <tomsoft@informatik.tu-chemnitz.de>
*/
#define TIMER_IRQ 0
/*
* 16 8259A IRQ's, 208 potential APIC interrupt sources.
* Right now the APIC is mostly only used for SMP.
* 256 vectors is an architectural limit. (we can have
* more than 256 devices theoretically, but they will
* have to use shared interrupts)
* Since vectors 0x00-0x1f are used/reserved for the CPU,
* the usable vector space is 0x20-0xff (224 vectors)
*/
/*
* The maximum number of vectors supported by x86_64 processors
* is limited to 256. For processors other than x86_64, NR_VECTORS
* should be changed accordingly.
*/
#define NR_VECTORS 256
#define FIRST_SYSTEM_VECTOR 0xef /* duplicated in hw_irq.h */
#ifdef CONFIG_PCI_MSI
#define NR_IRQS FIRST_SYSTEM_VECTOR
#define NR_IRQ_VECTORS NR_IRQS
#else
#define NR_IRQS 224
#define NR_IRQ_VECTORS (32 * NR_CPUS)
#endif
static __inline__ int irq_canonicalize(int irq)
{
return ((irq == 2) ? 9 : irq);
}
#ifdef CONFIG_X86_LOCAL_APIC
#define ARCH_HAS_NMI_WATCHDOG /* See include/linux/nmi.h */
#endif
#ifdef CONFIG_HOTPLUG_CPU
#include <linux/cpumask.h>
extern void fixup_irqs(cpumask_t map);
#endif
#define __ARCH_HAS_DO_SOFTIRQ 1
#endif /* _ASM_IRQ_H */
|
