arch/x86/include/asm/hw_irq.h

   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 */