1#ifndef _ASM_X86_HW_IRQ_H 2#define _ASM_X86_HW_IRQ_H 3 4/* 5 * (C) 1992, 1993 Linus Torvalds, (C) 1997 Ingo Molnar 6 * 7 * moved some of the old arch/i386/kernel/irq.h to here. VY 8 * 9 * IRQ/IPI changes taken from work by Thomas Radke 10 * <tomsoft@informatik.tu-chemnitz.de> 11 * 12 * hacked by Andi Kleen for x86-64. 13 * unified by tglx 14 */ 15 16#include <asm/irq_vectors.h> 17 18#ifndef __ASSEMBLY__ 19 20#include <linux/percpu.h> 21#include <linux/profile.h> 22#include <linux/smp.h> 23 24#include <asm/atomic.h> 25#include <asm/irq.h> 26#include <asm/sections.h> 27 28#define platform_legacy_irq(irq) ((irq) < 16) 29 30/* Interrupt handlers registered during init_IRQ */ 31extern void apic_timer_interrupt(void); 32extern void error_interrupt(void); 33extern void spurious_interrupt(void); 34extern void thermal_interrupt(void); 35extern void reschedule_interrupt(void); 36 37extern void invalidate_interrupt(void); 38extern void invalidate_interrupt0(void); 39extern void invalidate_interrupt1(void); 40extern void invalidate_interrupt2(void); 41extern void invalidate_interrupt3(void); 42extern void invalidate_interrupt4(void); 43extern void invalidate_interrupt5(void); 44extern void invalidate_interrupt6(void); 45extern void invalidate_interrupt7(void); 46 47extern void irq_move_cleanup_interrupt(void); 48extern void threshold_interrupt(void); 49 50extern void call_function_interrupt(void); 51extern void call_function_single_interrupt(void); 52 53/* PIC specific functions */ 54extern void disable_8259A_irq(unsigned int irq); 55extern void enable_8259A_irq(unsigned int irq); 56extern int i8259A_irq_pending(unsigned int irq); 57extern void make_8259A_irq(unsigned int irq); 58extern void init_8259A(int aeoi); 59 60/* IOAPIC */ 61#define IO_APIC_IRQ(x) (((x) >= 16) || ((1<<(x)) & io_apic_irqs)) 62extern unsigned long io_apic_irqs; 63 64extern void init_VISWS_APIC_irqs(void); 65extern void setup_IO_APIC(void); 66extern void disable_IO_APIC(void); 67extern int IO_APIC_get_PCI_irq_vector(int bus, int slot, int fn); 68extern void setup_ioapic_dest(void); 69 70#ifdef CONFIG_X86_64 71extern void enable_IO_APIC(void); 72#endif 73 74/* IPI functions */ 75#ifdef CONFIG_X86_32 76extern void send_IPI_self(int vector); 77#endif 78extern void send_IPI(int dest, int vector); 79 80/* Statistics */ 81extern atomic_t irq_err_count; 82extern atomic_t irq_mis_count; 83 84/* EISA */ 85extern void eisa_set_level_irq(unsigned int irq); 86 87/* Voyager functions */ 88extern asmlinkage void vic_cpi_interrupt(void); 89extern asmlinkage void vic_sys_interrupt(void); 90extern asmlinkage void vic_cmn_interrupt(void); 91extern asmlinkage void qic_timer_interrupt(void); 92extern asmlinkage void qic_invalidate_interrupt(void); 93extern asmlinkage void qic_reschedule_interrupt(void); 94extern asmlinkage void qic_enable_irq_interrupt(void); 95extern asmlinkage void qic_call_function_interrupt(void); 96 97/* SMP */ 98extern void smp_apic_timer_interrupt(struct pt_regs *); 99extern void smp_spurious_interrupt(struct pt_regs *); 100extern void smp_error_interrupt(struct pt_regs *); 101#ifdef CONFIG_X86_SMP 102extern void smp_reschedule_interrupt(struct pt_regs *); 103extern void smp_call_function_interrupt(struct pt_regs *); 104extern void smp_call_function_single_interrupt(struct pt_regs *); 105#ifdef CONFIG_X86_32 106extern void smp_invalidate_interrupt(struct pt_regs *); 107#else 108extern asmlinkage void smp_invalidate_interrupt(struct pt_regs *); 109#endif 110#endif 111 112#ifdef CONFIG_X86_32 113extern void (*const interrupt[NR_VECTORS])(void); 114#endif 115 116typedef int vector_irq_t[NR_VECTORS]; 117DECLARE_PER_CPU(vector_irq_t, vector_irq); 118 119#ifdef CONFIG_X86_IO_APIC 120extern void lock_vector_lock(void); 121extern void unlock_vector_lock(void); 122extern void __setup_vector_irq(int cpu); 123#else 124static inline void lock_vector_lock(void) {} 125static inline void unlock_vector_lock(void) {} 126static inline void __setup_vector_irq(int cpu) {} 127#endif 128 129#endif /* !ASSEMBLY_ */ 130 131#endif /* _ASM_X86_HW_IRQ_H */ 132