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 */ 51