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 /* IOAPIC */ 98 #define IO_APIC_IRQ(x) (((x) >= NR_IRQS_LEGACY) || ((1<<(x)) & io_apic_irqs)) 99 extern unsigned long io_apic_irqs; 100 101 extern void init_VISWS_APIC_irqs(void); 102 extern void setup_IO_APIC(void); 103 extern void disable_IO_APIC(void); 104 105 struct io_apic_irq_attr { 106 int ioapic; 107 int ioapic_pin; 108 int trigger; 109 int polarity; 110 }; 111 112 static inline void set_io_apic_irq_attr(struct io_apic_irq_attr *irq_attr, 113 int ioapic, int ioapic_pin, 114 int trigger, int polarity) 115 { 116 irq_attr->ioapic = ioapic; 117 irq_attr->ioapic_pin = ioapic_pin; 118 irq_attr->trigger = trigger; 119 irq_attr->polarity = polarity; 120 } 121 122 /* Intel specific interrupt remapping information */ 123 struct irq_2_iommu { 124 struct intel_iommu *iommu; 125 u16 irte_index; 126 u16 sub_handle; 127 u8 irte_mask; 128 }; 129 130 /* AMD specific interrupt remapping information */ 131 struct irq_2_irte { 132 u16 devid; /* Device ID for IRTE table */ 133 u16 index; /* Index into IRTE table*/ 134 }; 135 136 /* 137 * This is performance-critical, we want to do it O(1) 138 * 139 * Most irqs are mapped 1:1 with pins. 140 */ 141 struct irq_cfg { 142 struct irq_pin_list *irq_2_pin; 143 cpumask_var_t domain; 144 cpumask_var_t old_domain; 145 u8 vector; 146 u8 move_in_progress : 1; 147 #ifdef CONFIG_IRQ_REMAP 148 u8 remapped : 1; 149 union { 150 struct irq_2_iommu irq_2_iommu; 151 struct irq_2_irte irq_2_irte; 152 }; 153 #endif 154 }; 155 156 extern int assign_irq_vector(int, struct irq_cfg *, const struct cpumask *); 157 extern void send_cleanup_vector(struct irq_cfg *); 158 159 struct irq_data; 160 int __ioapic_set_affinity(struct irq_data *, const struct cpumask *, 161 unsigned int *dest_id); 162 extern int IO_APIC_get_PCI_irq_vector(int bus, int devfn, int pin, struct io_apic_irq_attr *irq_attr); 163 extern void setup_ioapic_dest(void); 164 165 extern void enable_IO_APIC(void); 166 167 /* Statistics */ 168 extern atomic_t irq_err_count; 169 extern atomic_t irq_mis_count; 170 171 /* EISA */ 172 extern void eisa_set_level_irq(unsigned int irq); 173 174 /* SMP */ 175 extern __visible void smp_apic_timer_interrupt(struct pt_regs *); 176 extern __visible void smp_spurious_interrupt(struct pt_regs *); 177 extern __visible void smp_x86_platform_ipi(struct pt_regs *); 178 extern __visible void smp_error_interrupt(struct pt_regs *); 179 #ifdef CONFIG_X86_IO_APIC 180 extern asmlinkage void smp_irq_move_cleanup_interrupt(void); 181 #endif 182 #ifdef CONFIG_SMP 183 extern __visible void smp_reschedule_interrupt(struct pt_regs *); 184 extern __visible void smp_call_function_interrupt(struct pt_regs *); 185 extern __visible void smp_call_function_single_interrupt(struct pt_regs *); 186 extern __visible void smp_invalidate_interrupt(struct pt_regs *); 187 #endif 188 189 extern void (*__initconst interrupt[NR_VECTORS-FIRST_EXTERNAL_VECTOR])(void); 190 #ifdef CONFIG_TRACING 191 #define trace_interrupt interrupt 192 #endif 193 194 typedef int vector_irq_t[NR_VECTORS]; 195 DECLARE_PER_CPU(vector_irq_t, vector_irq); 196 extern void setup_vector_irq(int cpu); 197 198 #ifdef CONFIG_X86_IO_APIC 199 extern void lock_vector_lock(void); 200 extern void unlock_vector_lock(void); 201 extern void __setup_vector_irq(int cpu); 202 #else 203 static inline void lock_vector_lock(void) {} 204 static inline void unlock_vector_lock(void) {} 205 static inline void __setup_vector_irq(int cpu) {} 206 #endif 207 208 #endif /* !ASSEMBLY_ */ 209 210 #endif /* _ASM_X86_HW_IRQ_H */ 211