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H. Peter Anvin1965aae2008-10-22 22:26:29 -07001#ifndef _ASM_X86_IRQ_H
2#define _ASM_X86_IRQ_H
Thomas Gleixner22067d42008-05-02 22:14:44 +02003/*
4 * (C) 1992, 1993 Linus Torvalds, (C) 1997 Ingo Molnar
5 *
6 * IRQ/IPI changes taken from work by Thomas Radke
7 * <tomsoft@informatik.tu-chemnitz.de>
8 */
9
10#include <asm/apicdef.h>
11#include <asm/irq_vectors.h>
12
13static inline int irq_canonicalize(int irq)
14{
15 return ((irq == 2) ? 9 : irq);
16}
17
18#ifdef CONFIG_X86_LOCAL_APIC
19# define ARCH_HAS_NMI_WATCHDOG
Thomas Gleixner96a388d2007-10-11 11:20:03 +020020#endif
Thomas Gleixner22067d42008-05-02 22:14:44 +020021
22#ifdef CONFIG_4KSTACKS
23 extern void irq_ctx_init(int cpu);
24 extern void irq_ctx_exit(int cpu);
25# define __ARCH_HAS_DO_SOFTIRQ
26#else
27# define irq_ctx_init(cpu) do { } while (0)
28# define irq_ctx_exit(cpu) do { } while (0)
29# ifdef CONFIG_X86_64
30# define __ARCH_HAS_DO_SOFTIRQ
31# endif
32#endif
33
Thomas Gleixner22067d42008-05-02 22:14:44 +020034#ifdef CONFIG_HOTPLUG_CPU
35#include <linux/cpumask.h>
Mike Travisd7b381b2008-12-16 17:33:58 -080036extern void fixup_irqs(void);
Thomas Gleixner22067d42008-05-02 22:14:44 +020037#endif
38
Dimitri Sivanichacaabe72009-03-04 12:56:05 -060039extern void (*generic_interrupt_extension)(void);
Thomas Gleixner22067d42008-05-02 22:14:44 +020040extern void init_IRQ(void);
41extern void native_init_IRQ(void);
Jeremy Fitzhardinge9b2b76a2009-02-06 14:09:40 -080042extern bool handle_irq(unsigned irq, struct pt_regs *regs);
Thomas Gleixner22067d42008-05-02 22:14:44 +020043
Jeremy Fitzhardinge7c1d7cd2009-02-06 14:09:41 -080044extern unsigned int do_IRQ(struct pt_regs *regs);
45
Thomas Gleixner22067d42008-05-02 22:14:44 +020046/* Interrupt vector management */
47extern DECLARE_BITMAP(used_vectors, NR_VECTORS);
Yinghai Lub77b8812008-12-19 15:23:44 -080048extern int vector_used_by_percpu_irq(unsigned int vector);
Thomas Gleixner22067d42008-05-02 22:14:44 +020049
H. Peter Anvin1965aae2008-10-22 22:26:29 -070050#endif /* _ASM_X86_IRQ_H */