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 perf_pending_interrupt(void); 33 34 extern void spurious_interrupt(void); 35 extern void thermal_interrupt(void); 36 extern void reschedule_interrupt(void); 37 extern void mce_self_interrupt(void); 38 39 extern void invalidate_interrupt(void); 40 extern void invalidate_interrupt0(void); 41 extern void invalidate_interrupt1(void); 42 extern void invalidate_interrupt2(void); 43 extern void invalidate_interrupt3(void); 44 extern void invalidate_interrupt4(void); 45 extern void invalidate_interrupt5(void); 46 extern void invalidate_interrupt6(void); 47 extern void invalidate_interrupt7(void); 48 49 extern void irq_move_cleanup_interrupt(void); 50 extern void reboot_interrupt(void); 51 extern void threshold_interrupt(void); 52 53 extern void call_function_interrupt(void); 54 extern void call_function_single_interrupt(void); 55 56 /* PIC specific functions */ 57 extern void disable_8259A_irq(unsigned int irq); 58 extern void enable_8259A_irq(unsigned int irq); 59 extern int i8259A_irq_pending(unsigned int irq); 60 extern void make_8259A_irq(unsigned int irq); 61 extern void init_8259A(int aeoi); 62 63 /* IOAPIC */ 64 #define IO_APIC_IRQ(x) (((x) >= NR_IRQS_LEGACY) || ((1<<(x)) & io_apic_irqs)) 65 extern unsigned long io_apic_irqs; 66 67 extern void init_VISWS_APIC_irqs(void); 68 extern void setup_IO_APIC(void); 69 extern void disable_IO_APIC(void); 70 71 struct io_apic_irq_attr { 72 int ioapic; 73 int ioapic_pin; 74 int trigger; 75 int polarity; 76 }; 77 78 static inline void set_io_apic_irq_attr(struct io_apic_irq_attr *irq_attr, 79 int ioapic, int ioapic_pin, 80 int trigger, int polarity) 81 { 82 irq_attr->ioapic = ioapic; 83 irq_attr->ioapic_pin = ioapic_pin; 84 irq_attr->trigger = trigger; 85 irq_attr->polarity = polarity; 86 } 87 88 extern int IO_APIC_get_PCI_irq_vector(int bus, int devfn, int pin, 89 struct io_apic_irq_attr *irq_attr); 90 extern void setup_ioapic_dest(void); 91 92 extern void enable_IO_APIC(void); 93 94 /* Statistics */ 95 extern atomic_t irq_err_count; 96 extern atomic_t irq_mis_count; 97 98 /* EISA */ 99 extern void eisa_set_level_irq(unsigned int irq); 100 101 /* SMP */ 102 extern void smp_apic_timer_interrupt(struct pt_regs *); 103 extern void smp_spurious_interrupt(struct pt_regs *); 104 extern void smp_generic_interrupt(struct pt_regs *); 105 extern void smp_error_interrupt(struct pt_regs *); 106 #ifdef CONFIG_X86_IO_APIC 107 extern asmlinkage void smp_irq_move_cleanup_interrupt(void); 108 #endif 109 #ifdef CONFIG_SMP 110 extern void smp_reschedule_interrupt(struct pt_regs *); 111 extern void smp_call_function_interrupt(struct pt_regs *); 112 extern void smp_call_function_single_interrupt(struct pt_regs *); 113 #ifdef CONFIG_X86_32 114 extern void smp_invalidate_interrupt(struct pt_regs *); 115 #else 116 extern asmlinkage void smp_invalidate_interrupt(struct pt_regs *); 117 #endif 118 #endif 119 120 extern void (*__initconst interrupt[NR_VECTORS-FIRST_EXTERNAL_VECTOR])(void); 121 122 typedef int vector_irq_t[NR_VECTORS]; 123 DECLARE_PER_CPU(vector_irq_t, vector_irq); 124 125 #ifdef CONFIG_X86_IO_APIC 126 extern void lock_vector_lock(void); 127 extern void unlock_vector_lock(void); 128 extern void __setup_vector_irq(int cpu); 129 #else 130 static inline void lock_vector_lock(void) {} 131 static inline void unlock_vector_lock(void) {} 132 static inline void __setup_vector_irq(int cpu) {} 133 #endif 134 135 #endif /* !ASSEMBLY_ */ 136 137 #endif /* _ASM_X86_HW_IRQ_H */ 138