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 /* 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
 191 typedef int vector_irq_t[NR_VECTORS];
 192 DECLARE_PER_CPU(vector_irq_t, vector_irq);
 193 extern void setup_vector_irq(int cpu);
 194
 195 #ifdef CONFIG_X86_IO_APIC
 196 extern void lock_vector_lock(void);
 197 extern void unlock_vector_lock(void);
 198 extern void __setup_vector_irq(int cpu);
 199 #else
 200 static inline void lock_vector_lock(void) {}
 201 static inline void unlock_vector_lock(void) {}
 202 static inline void __setup_vector_irq(int cpu) {}
 203 #endif
 204
 205 #endif /* !ASSEMBLY_ */
 206
 207 #endif /* _ASM_X86_HW_IRQ_H */