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 x86_platform_ipi(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 /* 89 * This is performance-critical, we want to do it O(1) 90 * 91 * Most irqs are mapped 1:1 with pins. 92 */ 93 struct irq_cfg { 94 struct irq_pin_list *irq_2_pin; 95 cpumask_var_t domain; 96 cpumask_var_t old_domain; 97 u8 vector; 98 u8 move_in_progress : 1; 99 }; 100 101 extern struct irq_cfg *irq_cfg(unsigned int); 102 extern int assign_irq_vector(int, struct irq_cfg *, const struct cpumask *); 103 extern void send_cleanup_vector(struct irq_cfg *); 104 105 struct irq_desc; 106 extern unsigned int set_desc_affinity(struct irq_desc *, const struct cpumask *, 107 unsigned int *dest_id); 108 extern int IO_APIC_get_PCI_irq_vector(int bus, int devfn, int pin, struct io_apic_irq_attr *irq_attr); 109 extern void setup_ioapic_dest(void); 110 111 extern void enable_IO_APIC(void); 112 113 /* Statistics */ 114 extern atomic_t irq_err_count; 115 extern atomic_t irq_mis_count; 116 117 /* EISA */ 118 extern void eisa_set_level_irq(unsigned int irq); 119 120 /* SMP */ 121 extern void smp_apic_timer_interrupt(struct pt_regs *); 122 extern void smp_spurious_interrupt(struct pt_regs *); 123 extern void smp_x86_platform_ipi(struct pt_regs *); 124 extern void smp_error_interrupt(struct pt_regs *); 125 #ifdef CONFIG_X86_IO_APIC 126 extern asmlinkage void smp_irq_move_cleanup_interrupt(void); 127 #endif 128 #ifdef CONFIG_SMP 129 extern void smp_reschedule_interrupt(struct pt_regs *); 130 extern void smp_call_function_interrupt(struct pt_regs *); 131 extern void smp_call_function_single_interrupt(struct pt_regs *); 132 #ifdef CONFIG_X86_32 133 extern void smp_invalidate_interrupt(struct pt_regs *); 134 #else 135 extern asmlinkage void smp_invalidate_interrupt(struct pt_regs *); 136 #endif 137 #endif 138 139 extern void (*__initconst interrupt[NR_VECTORS-FIRST_EXTERNAL_VECTOR])(void); 140 141 typedef int vector_irq_t[NR_VECTORS]; 142 DECLARE_PER_CPU(vector_irq_t, vector_irq); 143 144 #ifdef CONFIG_X86_IO_APIC 145 extern void lock_vector_lock(void); 146 extern void unlock_vector_lock(void); 147 extern void __setup_vector_irq(int cpu); 148 #else 149 static inline void lock_vector_lock(void) {} 150 static inline void unlock_vector_lock(void) {} 151 static inline void __setup_vector_irq(int cpu) {} 152 #endif 153 154 #endif /* !ASSEMBLY_ */ 155 156 #endif /* _ASM_X86_HW_IRQ_H */ 157