arch/x86/include/asm/irq.h

   1 #ifndef _ASM_X86_IRQ_H
   2 #define _ASM_X86_IRQ_H
   3 /*
   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
  13 static 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
  20 #endif
  21
  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
  34 #ifdef CONFIG_HOTPLUG_CPU
  35 #include <linux/cpumask.h>
  36 extern void fixup_irqs(void);
  37 #endif
  38
  39 extern void (*generic_interrupt_extension)(void);
  40 extern void init_IRQ(void);
  41 extern void native_init_IRQ(void);
  42 extern bool handle_irq(unsigned irq, struct pt_regs *regs);
  43
  44 extern unsigned int do_IRQ(struct pt_regs *regs);
  45
  46 /* Interrupt vector management */
  47 extern DECLARE_BITMAP(used_vectors, NR_VECTORS);
  48 extern int vector_used_by_percpu_irq(unsigned int vector);
  49
  50 #endif /* _ASM_X86_IRQ_H */