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 <linux/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 irq_work_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 extern void invalidate_interrupt8(void); 48 extern void invalidate_interrupt9(void); 49 extern void invalidate_interrupt10(void); 50 extern void invalidate_interrupt11(void); 51 extern void invalidate_interrupt12(void); 52 extern void invalidate_interrupt13(void); 53 extern void invalidate_interrupt14(void); 54 extern void invalidate_interrupt15(void); 55 extern void invalidate_interrupt16(void); 56 extern void invalidate_interrupt17(void); 57 extern void invalidate_interrupt18(void); 58 extern void invalidate_interrupt19(void); 59 extern void invalidate_interrupt20(void); 60 extern void invalidate_interrupt21(void); 61 extern void invalidate_interrupt22(void); 62 extern void invalidate_interrupt23(void); 63 extern void invalidate_interrupt24(void); 64 extern void invalidate_interrupt25(void); 65 extern void invalidate_interrupt26(void); 66 extern void invalidate_interrupt27(void); 67 extern void invalidate_interrupt28(void); 68 extern void invalidate_interrupt29(void); 69 extern void invalidate_interrupt30(void); 70 extern void invalidate_interrupt31(void); 71 72 extern void irq_move_cleanup_interrupt(void); 73 extern void reboot_interrupt(void); 74 extern void threshold_interrupt(void); 75 76 extern void call_function_interrupt(void); 77 extern void call_function_single_interrupt(void); 78 79 /* IOAPIC */ 80 #define IO_APIC_IRQ(x) (((x) >= NR_IRQS_LEGACY) || ((1<<(x)) & io_apic_irqs)) 81 extern unsigned long io_apic_irqs; 82 83 extern void init_VISWS_APIC_irqs(void); 84 extern void setup_IO_APIC(void); 85 extern void disable_IO_APIC(void); 86 87 struct io_apic_irq_attr { 88 int ioapic; 89 int ioapic_pin; 90 int trigger; 91 int polarity; 92 }; 93 94 static inline void set_io_apic_irq_attr(struct io_apic_irq_attr *irq_attr, 95 int ioapic, int ioapic_pin, 96 int trigger, int polarity) 97 { 98 irq_attr->ioapic = ioapic; 99 irq_attr->ioapic_pin = ioapic_pin; 100 irq_attr->trigger = trigger; 101 irq_attr->polarity = polarity; 102 } 103 104 struct irq_2_iommu { 105 struct intel_iommu *iommu; 106 u16 irte_index; 107 u16 sub_handle; 108 u8 irte_mask; 109 }; 110 111 /* 112 * This is performance-critical, we want to do it O(1) 113 * 114 * Most irqs are mapped 1:1 with pins. 115 */ 116 struct irq_cfg { 117 struct irq_pin_list *irq_2_pin; 118 cpumask_var_t domain; 119 cpumask_var_t old_domain; 120 u8 vector; 121 u8 move_in_progress : 1; 122 #ifdef CONFIG_IRQ_REMAP 123 struct irq_2_iommu irq_2_iommu; 124 #endif 125 }; 126 127 extern int assign_irq_vector(int, struct irq_cfg *, const struct cpumask *); 128 extern void send_cleanup_vector(struct irq_cfg *); 129 130 struct irq_data; 131 int __ioapic_set_affinity(struct irq_data *, const struct cpumask *, 132 unsigned int *dest_id); 133 extern int IO_APIC_get_PCI_irq_vector(int bus, int devfn, int pin, struct io_apic_irq_attr *irq_attr); 134 extern void setup_ioapic_dest(void); 135 136 extern void enable_IO_APIC(void); 137 138 /* Statistics */ 139 extern atomic_t irq_err_count; 140 extern atomic_t irq_mis_count; 141 142 /* EISA */ 143 extern void eisa_set_level_irq(unsigned int irq); 144 145 /* SMP */ 146 extern void smp_apic_timer_interrupt(struct pt_regs *); 147 extern void smp_spurious_interrupt(struct pt_regs *); 148 extern void smp_x86_platform_ipi(struct pt_regs *); 149 extern void smp_error_interrupt(struct pt_regs *); 150 #ifdef CONFIG_X86_IO_APIC 151 extern asmlinkage void smp_irq_move_cleanup_interrupt(void); 152 #endif 153 #ifdef CONFIG_SMP 154 extern void smp_reschedule_interrupt(struct pt_regs *); 155 extern void smp_call_function_interrupt(struct pt_regs *); 156 extern void smp_call_function_single_interrupt(struct pt_regs *); 157 #ifdef CONFIG_X86_32 158 extern void smp_invalidate_interrupt(struct pt_regs *); 159 #else 160 extern asmlinkage void smp_invalidate_interrupt(struct pt_regs *); 161 #endif 162 #endif 163 164 extern void (*__initconst interrupt[NR_VECTORS-FIRST_EXTERNAL_VECTOR])(void); 165 166 typedef int vector_irq_t[NR_VECTORS]; 167 DECLARE_PER_CPU(vector_irq_t, vector_irq); 168 extern void setup_vector_irq(int cpu); 169 170 #ifdef CONFIG_X86_IO_APIC 171 extern void lock_vector_lock(void); 172 extern void unlock_vector_lock(void); 173 extern void __setup_vector_irq(int cpu); 174 #else 175 static inline void lock_vector_lock(void) {} 176 static inline void unlock_vector_lock(void) {} 177 static inline void __setup_vector_irq(int cpu) {} 178 #endif 179 180 #endif /* !ASSEMBLY_ */ 181 182 #endif /* _ASM_X86_HW_IRQ_H */ 183