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