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/* Interrupt handlers registered during init_IRQ */ 29extern void apic_timer_interrupt(void); 30extern void x86_platform_ipi(void); 31extern void error_interrupt(void); 32extern void perf_pending_interrupt(void); 33 34extern void spurious_interrupt(void); 35extern void thermal_interrupt(void); 36extern void reschedule_interrupt(void); 37extern void mce_self_interrupt(void); 38 39extern void invalidate_interrupt(void); 40extern void invalidate_interrupt0(void); 41extern void invalidate_interrupt1(void); 42extern void invalidate_interrupt2(void); 43extern void invalidate_interrupt3(void); 44extern void invalidate_interrupt4(void); 45extern void invalidate_interrupt5(void); 46extern void invalidate_interrupt6(void); 47extern void invalidate_interrupt7(void); 48 49extern void irq_move_cleanup_interrupt(void); 50extern void reboot_interrupt(void); 51extern void threshold_interrupt(void); 52 53extern void call_function_interrupt(void); 54extern void call_function_single_interrupt(void); 55 56/* IOAPIC */ 57#define IO_APIC_IRQ(x) (((x) >= NR_IRQS_LEGACY) || ((1<<(x)) & io_apic_irqs)) 58extern unsigned long io_apic_irqs; 59 60extern void init_VISWS_APIC_irqs(void); 61extern void setup_IO_APIC(void); 62extern void disable_IO_APIC(void); 63 64struct io_apic_irq_attr { 65 int ioapic; 66 int ioapic_pin; 67 int trigger; 68 int polarity; 69}; 70 71static inline void set_io_apic_irq_attr(struct io_apic_irq_attr *irq_attr, 72 int ioapic, int ioapic_pin, 73 int trigger, int polarity) 74{ 75 irq_attr->ioapic = ioapic; 76 irq_attr->ioapic_pin = ioapic_pin; 77 irq_attr->trigger = trigger; 78 irq_attr->polarity = polarity; 79} 80 81/* 82 * This is performance-critical, we want to do it O(1) 83 * 84 * Most irqs are mapped 1:1 with pins. 85 */ 86struct irq_cfg { 87 struct irq_pin_list *irq_2_pin; 88 cpumask_var_t domain; 89 cpumask_var_t old_domain; 90 u8 vector; 91 u8 move_in_progress : 1; 92}; 93 94extern struct irq_cfg *irq_cfg(unsigned int); 95extern int assign_irq_vector(int, struct irq_cfg *, const struct cpumask *); 96extern void send_cleanup_vector(struct irq_cfg *); 97 98struct irq_desc; 99extern unsigned int set_desc_affinity(struct irq_desc *, const struct cpumask *, 100 unsigned int *dest_id); 101extern int IO_APIC_get_PCI_irq_vector(int bus, int devfn, int pin, struct io_apic_irq_attr *irq_attr); 102extern void setup_ioapic_dest(void); 103 104extern void enable_IO_APIC(void); 105 106/* Statistics */ 107extern atomic_t irq_err_count; 108extern atomic_t irq_mis_count; 109 110/* EISA */ 111extern void eisa_set_level_irq(unsigned int irq); 112 113/* SMP */ 114extern void smp_apic_timer_interrupt(struct pt_regs *); 115extern void smp_spurious_interrupt(struct pt_regs *); 116extern void smp_x86_platform_ipi(struct pt_regs *); 117extern void smp_error_interrupt(struct pt_regs *); 118#ifdef CONFIG_X86_IO_APIC 119extern asmlinkage void smp_irq_move_cleanup_interrupt(void); 120#endif 121#ifdef CONFIG_SMP 122extern void smp_reschedule_interrupt(struct pt_regs *); 123extern void smp_call_function_interrupt(struct pt_regs *); 124extern void smp_call_function_single_interrupt(struct pt_regs *); 125#ifdef CONFIG_X86_32 126extern void smp_invalidate_interrupt(struct pt_regs *); 127#else 128extern asmlinkage void smp_invalidate_interrupt(struct pt_regs *); 129#endif 130#endif 131 132extern void (*__initconst interrupt[NR_VECTORS-FIRST_EXTERNAL_VECTOR])(void); 133 134typedef int vector_irq_t[NR_VECTORS]; 135DECLARE_PER_CPU(vector_irq_t, vector_irq); 136extern void setup_vector_irq(int cpu); 137 138#ifdef CONFIG_X86_IO_APIC 139extern void lock_vector_lock(void); 140extern void unlock_vector_lock(void); 141extern void __setup_vector_irq(int cpu); 142#else 143static inline void lock_vector_lock(void) {} 144static inline void unlock_vector_lock(void) {} 145static inline void __setup_vector_irq(int cpu) {} 146#endif 147 148#endif /* !ASSEMBLY_ */ 149 150#endif /* _ASM_X86_HW_IRQ_H */ 151