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 */ 31 extern void apic_timer_interrupt(void); 32 extern void error_interrupt(void); 33 extern void spurious_interrupt(void); 34 extern void thermal_interrupt(void); 35 extern void reschedule_interrupt(void); 36 37 extern void invalidate_interrupt(void); 38 extern void invalidate_interrupt0(void); 39 extern void invalidate_interrupt1(void); 40 extern void invalidate_interrupt2(void); 41 extern void invalidate_interrupt3(void); 42 extern void invalidate_interrupt4(void); 43 extern void invalidate_interrupt5(void); 44 extern void invalidate_interrupt6(void); 45 extern void invalidate_interrupt7(void); 46 47 extern void irq_move_cleanup_interrupt(void); 48 extern void threshold_interrupt(void); 49 50 extern void call_function_interrupt(void); 51 extern void call_function_single_interrupt(void); 52 53 /* PIC specific functions */ 54 extern void disable_8259A_irq(unsigned int irq); 55 extern void enable_8259A_irq(unsigned int irq); 56 extern int i8259A_irq_pending(unsigned int irq); 57 extern void make_8259A_irq(unsigned int irq); 58 extern void init_8259A(int aeoi); 59 60 /* IOAPIC */ 61 #define IO_APIC_IRQ(x) (((x) >= 16) || ((1<<(x)) & io_apic_irqs)) 62 extern unsigned long io_apic_irqs; 63 64 extern void init_VISWS_APIC_irqs(void); 65 extern void setup_IO_APIC(void); 66 extern void disable_IO_APIC(void); 67 extern int IO_APIC_get_PCI_irq_vector(int bus, int slot, int fn); 68 extern void setup_ioapic_dest(void); 69 70 #ifdef CONFIG_X86_64 71 extern void enable_IO_APIC(void); 72 #endif 73 74 /* IPI functions */ 75 #ifdef CONFIG_X86_32 76 extern void send_IPI_self(int vector); 77 #endif 78 extern void send_IPI(int dest, int vector); 79 80 /* Statistics */ 81 extern atomic_t irq_err_count; 82 extern atomic_t irq_mis_count; 83 84 /* EISA */ 85 extern void eisa_set_level_irq(unsigned int irq); 86 87 /* Voyager functions */ 88 extern asmlinkage void vic_cpi_interrupt(void); 89 extern asmlinkage void vic_sys_interrupt(void); 90 extern asmlinkage void vic_cmn_interrupt(void); 91 extern asmlinkage void qic_timer_interrupt(void); 92 extern asmlinkage void qic_invalidate_interrupt(void); 93 extern asmlinkage void qic_reschedule_interrupt(void); 94 extern asmlinkage void qic_enable_irq_interrupt(void); 95 extern asmlinkage void qic_call_function_interrupt(void); 96 97 /* SMP */ 98 extern void smp_apic_timer_interrupt(struct pt_regs *); 99 extern void smp_spurious_interrupt(struct pt_regs *); 100 extern void smp_error_interrupt(struct pt_regs *); 101 #ifdef CONFIG_X86_SMP 102 extern void smp_reschedule_interrupt(struct pt_regs *); 103 extern void smp_call_function_interrupt(struct pt_regs *); 104 extern void smp_call_function_single_interrupt(struct pt_regs *); 105 #ifdef CONFIG_X86_32 106 extern void smp_invalidate_interrupt(struct pt_regs *); 107 #else 108 extern asmlinkage void smp_invalidate_interrupt(struct pt_regs *); 109 #endif 110 #endif 111 112 #ifdef CONFIG_X86_32 113 extern void (*const interrupt[NR_VECTORS])(void); 114 #endif 115 116 typedef int vector_irq_t[NR_VECTORS]; 117 DECLARE_PER_CPU(vector_irq_t, vector_irq); 118 119 #ifdef CONFIG_X86_IO_APIC 120 extern void lock_vector_lock(void); 121 extern void unlock_vector_lock(void); 122 extern void __setup_vector_irq(int cpu); 123 #else 124 static inline void lock_vector_lock(void) {} 125 static inline void unlock_vector_lock(void) {} 126 static inline void __setup_vector_irq(int cpu) {} 127 #endif 128 129 #endif /* !ASSEMBLY_ */ 130 131 #endif /* _ASM_X86_HW_IRQ_H */ 132