9b2b76a334
Xen uses a different interrupt path, so introduce handle_irq() to allow interrupts to be inserted into the normal interrupt path. This is handled slightly differently on 32 and 64-bit. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
48 lines
1.1 KiB
C
48 lines
1.1 KiB
C
#ifndef _ASM_X86_IRQ_H
|
|
#define _ASM_X86_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>
|
|
*/
|
|
|
|
#include <asm/apicdef.h>
|
|
#include <asm/irq_vectors.h>
|
|
|
|
static inline int irq_canonicalize(int irq)
|
|
{
|
|
return ((irq == 2) ? 9 : irq);
|
|
}
|
|
|
|
#ifdef CONFIG_X86_LOCAL_APIC
|
|
# define ARCH_HAS_NMI_WATCHDOG
|
|
#endif
|
|
|
|
#ifdef CONFIG_4KSTACKS
|
|
extern void irq_ctx_init(int cpu);
|
|
extern void irq_ctx_exit(int cpu);
|
|
# define __ARCH_HAS_DO_SOFTIRQ
|
|
#else
|
|
# define irq_ctx_init(cpu) do { } while (0)
|
|
# define irq_ctx_exit(cpu) do { } while (0)
|
|
# ifdef CONFIG_X86_64
|
|
# define __ARCH_HAS_DO_SOFTIRQ
|
|
# endif
|
|
#endif
|
|
|
|
#ifdef CONFIG_HOTPLUG_CPU
|
|
#include <linux/cpumask.h>
|
|
extern void fixup_irqs(void);
|
|
#endif
|
|
|
|
extern unsigned int do_IRQ(struct pt_regs *regs);
|
|
extern void init_IRQ(void);
|
|
extern void native_init_IRQ(void);
|
|
extern bool handle_irq(unsigned irq, struct pt_regs *regs);
|
|
|
|
/* Interrupt vector management */
|
|
extern DECLARE_BITMAP(used_vectors, NR_VECTORS);
|
|
extern int vector_used_by_percpu_irq(unsigned int vector);
|
|
|
|
#endif /* _ASM_X86_IRQ_H */
|