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 */ 29 extern void apic_timer_interrupt(void); 30 extern void generic_interrupt(void); 31 extern void error_interrupt(void); 32 extern void spurious_interrupt(void); 33 extern void thermal_interrupt(void); 34 extern void reschedule_interrupt(void); 35 36 extern void invalidate_interrupt(void); 37 extern void invalidate_interrupt0(void); 38 extern void invalidate_interrupt1(void); 39 extern void invalidate_interrupt2(void); 40 extern void invalidate_interrupt3(void); 41 extern void invalidate_interrupt4(void); 42 extern void invalidate_interrupt5(void); 43 extern void invalidate_interrupt6(void); 44 extern void invalidate_interrupt7(void); 45 46 extern void irq_move_cleanup_interrupt(void); 47 extern void threshold_interrupt(void); 48 49 extern void call_function_interrupt(void); 50 extern void call_function_single_interrupt(void); 51 52 /* PIC specific functions */ 53 extern void disable_8259A_irq(unsigned int irq); 54 extern void enable_8259A_irq(unsigned int irq); 55 extern int i8259A_irq_pending(unsigned int irq); 56 extern void make_8259A_irq(unsigned int irq); 57 extern void init_8259A(int aeoi); 58 59 /* IOAPIC */ 60 #define IO_APIC_IRQ(x) (((x) >= NR_IRQS_LEGACY) || ((1<<(x)) & io_apic_irqs)) 61 extern unsigned long io_apic_irqs; 62 63 extern void init_VISWS_APIC_irqs(void); 64 extern void setup_IO_APIC(void); 65 extern void disable_IO_APIC(void); 66 extern int IO_APIC_get_PCI_irq_vector(int bus, int slot, int fn); 67 extern void setup_ioapic_dest(void); 68 69 extern void enable_IO_APIC(void); 70 71 /* Statistics */ 72 extern atomic_t irq_err_count; 73 extern atomic_t irq_mis_count; 74 75 /* EISA */ 76 extern void eisa_set_level_irq(unsigned int irq); 77 78 /* SMP */ 79 extern void smp_apic_timer_interrupt(struct pt_regs *); 80 extern void smp_spurious_interrupt(struct pt_regs *); 81 extern void smp_error_interrupt(struct pt_regs *); 82 #ifdef CONFIG_SMP 83 extern void smp_reschedule_interrupt(struct pt_regs *); 84 extern void smp_call_function_interrupt(struct pt_regs *); 85 extern void smp_call_function_single_interrupt(struct pt_regs *); 86 #ifdef CONFIG_X86_32 87 extern void smp_invalidate_interrupt(struct pt_regs *); 88 #else 89 extern asmlinkage void smp_invalidate_interrupt(struct pt_regs *); 90 #endif 91 #endif 92 93 extern void (*__initconst interrupt[NR_VECTORS-FIRST_EXTERNAL_VECTOR])(void); 94 95 typedef int vector_irq_t[NR_VECTORS]; 96 DECLARE_PER_CPU(vector_irq_t, vector_irq); 97 98 #ifdef CONFIG_X86_IO_APIC 99 extern void lock_vector_lock(void); 100 extern void unlock_vector_lock(void); 101 extern void __setup_vector_irq(int cpu); 102 #else 103 static inline void lock_vector_lock(void) {} 104 static inline void unlock_vector_lock(void) {} 105 static inline void __setup_vector_irq(int cpu) {} 106 #endif 107 108 #endif /* !ASSEMBLY_ */ 109 110 #endif /* _ASM_X86_HW_IRQ_H */ 111