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 asmlinkage void apic_timer_interrupt(void); 30 extern asmlinkage void x86_platform_ipi(void); 31 extern asmlinkage void kvm_posted_intr_ipi(void); 32 extern asmlinkage void error_interrupt(void); 33 extern asmlinkage void irq_work_interrupt(void); 34 35 extern asmlinkage void spurious_interrupt(void); 36 extern asmlinkage void thermal_interrupt(void); 37 extern asmlinkage void reschedule_interrupt(void); 38 39 extern asmlinkage void invalidate_interrupt(void); 40 extern asmlinkage void invalidate_interrupt0(void); 41 extern asmlinkage void invalidate_interrupt1(void); 42 extern asmlinkage void invalidate_interrupt2(void); 43 extern asmlinkage void invalidate_interrupt3(void); 44 extern asmlinkage void invalidate_interrupt4(void); 45 extern asmlinkage void invalidate_interrupt5(void); 46 extern asmlinkage void invalidate_interrupt6(void); 47 extern asmlinkage void invalidate_interrupt7(void); 48 extern asmlinkage void invalidate_interrupt8(void); 49 extern asmlinkage void invalidate_interrupt9(void); 50 extern asmlinkage void invalidate_interrupt10(void); 51 extern asmlinkage void invalidate_interrupt11(void); 52 extern asmlinkage void invalidate_interrupt12(void); 53 extern asmlinkage void invalidate_interrupt13(void); 54 extern asmlinkage void invalidate_interrupt14(void); 55 extern asmlinkage void invalidate_interrupt15(void); 56 extern asmlinkage void invalidate_interrupt16(void); 57 extern asmlinkage void invalidate_interrupt17(void); 58 extern asmlinkage void invalidate_interrupt18(void); 59 extern asmlinkage void invalidate_interrupt19(void); 60 extern asmlinkage void invalidate_interrupt20(void); 61 extern asmlinkage void invalidate_interrupt21(void); 62 extern asmlinkage void invalidate_interrupt22(void); 63 extern asmlinkage void invalidate_interrupt23(void); 64 extern asmlinkage void invalidate_interrupt24(void); 65 extern asmlinkage void invalidate_interrupt25(void); 66 extern asmlinkage void invalidate_interrupt26(void); 67 extern asmlinkage void invalidate_interrupt27(void); 68 extern asmlinkage void invalidate_interrupt28(void); 69 extern asmlinkage void invalidate_interrupt29(void); 70 extern asmlinkage void invalidate_interrupt30(void); 71 extern asmlinkage void invalidate_interrupt31(void); 72 73 extern asmlinkage void irq_move_cleanup_interrupt(void); 74 extern asmlinkage void reboot_interrupt(void); 75 extern asmlinkage void threshold_interrupt(void); 76 77 extern asmlinkage void call_function_interrupt(void); 78 extern asmlinkage void call_function_single_interrupt(void); 79 80 #ifdef CONFIG_TRACING 81 /* Interrupt handlers registered during init_IRQ */ 82 extern void trace_apic_timer_interrupt(void); 83 extern void trace_x86_platform_ipi(void); 84 extern void trace_error_interrupt(void); 85 extern void trace_irq_work_interrupt(void); 86 extern void trace_spurious_interrupt(void); 87 extern void trace_thermal_interrupt(void); 88 extern void trace_reschedule_interrupt(void); 89 extern void trace_threshold_interrupt(void); 90 extern void trace_call_function_interrupt(void); 91 extern void trace_call_function_single_interrupt(void); 92 #define trace_irq_move_cleanup_interrupt irq_move_cleanup_interrupt 93 #define trace_reboot_interrupt reboot_interrupt 94 #define trace_kvm_posted_intr_ipi kvm_posted_intr_ipi 95 #endif /* CONFIG_TRACING */ 96 97 #ifdef CONFIG_IRQ_REMAP 98 /* Intel specific interrupt remapping information */ 99 struct irq_2_iommu { 100 struct intel_iommu *iommu; 101 u16 irte_index; 102 u16 sub_handle; 103 u8 irte_mask; 104 }; 105 106 /* AMD specific interrupt remapping information */ 107 struct irq_2_irte { 108 u16 devid; /* Device ID for IRTE table */ 109 u16 index; /* Index into IRTE table*/ 110 }; 111 #endif /* CONFIG_IRQ_REMAP */ 112 113 #ifdef CONFIG_X86_LOCAL_APIC 114 struct irq_data; 115 116 struct irq_cfg { 117 cpumask_var_t domain; 118 cpumask_var_t old_domain; 119 u8 vector; 120 u8 move_in_progress : 1; 121 #ifdef CONFIG_IRQ_REMAP 122 u8 remapped : 1; 123 union { 124 struct irq_2_iommu irq_2_iommu; 125 struct irq_2_irte irq_2_irte; 126 }; 127 #endif 128 union { 129 #ifdef CONFIG_X86_IO_APIC 130 struct { 131 struct list_head irq_2_pin; 132 }; 133 #endif 134 }; 135 }; 136 137 extern struct irq_cfg *irq_cfg(unsigned int irq); 138 extern struct irq_cfg *irqd_cfg(struct irq_data *irq_data); 139 extern struct irq_cfg *alloc_irq_and_cfg_at(unsigned int at, int node); 140 extern void lock_vector_lock(void); 141 extern void unlock_vector_lock(void); 142 extern int assign_irq_vector(int, struct irq_cfg *, const struct cpumask *); 143 extern void clear_irq_vector(int irq, struct irq_cfg *cfg); 144 extern void setup_vector_irq(int cpu); 145 #ifdef CONFIG_SMP 146 extern void send_cleanup_vector(struct irq_cfg *); 147 extern void irq_complete_move(struct irq_cfg *cfg); 148 #else 149 static inline void send_cleanup_vector(struct irq_cfg *c) { } 150 static inline void irq_complete_move(struct irq_cfg *c) { } 151 #endif 152 153 extern int apic_retrigger_irq(struct irq_data *data); 154 extern void apic_ack_edge(struct irq_data *data); 155 extern int apic_set_affinity(struct irq_data *data, const struct cpumask *mask, 156 unsigned int *dest_id); 157 #else /* CONFIG_X86_LOCAL_APIC */ 158 static inline void lock_vector_lock(void) {} 159 static inline void unlock_vector_lock(void) {} 160 #endif /* CONFIG_X86_LOCAL_APIC */ 161 162 /* Statistics */ 163 extern atomic_t irq_err_count; 164 extern atomic_t irq_mis_count; 165 166 /* EISA */ 167 extern void eisa_set_level_irq(unsigned int irq); 168 169 /* SMP */ 170 extern __visible void smp_apic_timer_interrupt(struct pt_regs *); 171 extern __visible void smp_spurious_interrupt(struct pt_regs *); 172 extern __visible void smp_x86_platform_ipi(struct pt_regs *); 173 extern __visible void smp_error_interrupt(struct pt_regs *); 174 #ifdef CONFIG_X86_IO_APIC 175 extern asmlinkage void smp_irq_move_cleanup_interrupt(void); 176 #endif 177 #ifdef CONFIG_SMP 178 extern __visible void smp_reschedule_interrupt(struct pt_regs *); 179 extern __visible void smp_call_function_interrupt(struct pt_regs *); 180 extern __visible void smp_call_function_single_interrupt(struct pt_regs *); 181 extern __visible void smp_invalidate_interrupt(struct pt_regs *); 182 #endif 183 184 extern char irq_entries_start[]; 185 #ifdef CONFIG_TRACING 186 #define trace_irq_entries_start irq_entries_start 187 #endif 188 189 #define VECTOR_UNDEFINED (-1) 190 #define VECTOR_RETRIGGERED (-2) 191 192 typedef int vector_irq_t[NR_VECTORS]; 193 DECLARE_PER_CPU(vector_irq_t, vector_irq); 194 195 #endif /* !ASSEMBLY_ */ 196 197 #endif /* _ASM_X86_HW_IRQ_H */ 198