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 <asm/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 extern void mce_self_interrupt(void);
  38
  39 extern void invalidate_interrupt(void);
  40 extern void invalidate_interrupt0(void);
  41 extern void invalidate_interrupt1(void);
  42 extern void invalidate_interrupt2(void);
  43 extern void invalidate_interrupt3(void);
  44 extern void invalidate_interrupt4(void);
  45 extern void invalidate_interrupt5(void);
  46 extern void invalidate_interrupt6(void);
  47 extern void invalidate_interrupt7(void);
  48 extern void invalidate_interrupt8(void);
  49 extern void invalidate_interrupt9(void);
  50 extern void invalidate_interrupt10(void);
  51 extern void invalidate_interrupt11(void);
  52 extern void invalidate_interrupt12(void);
  53 extern void invalidate_interrupt13(void);
  54 extern void invalidate_interrupt14(void);
  55 extern void invalidate_interrupt15(void);
  56 extern void invalidate_interrupt16(void);
  57 extern void invalidate_interrupt17(void);
  58 extern void invalidate_interrupt18(void);
  59 extern void invalidate_interrupt19(void);
  60 extern void invalidate_interrupt20(void);
  61 extern void invalidate_interrupt21(void);
  62 extern void invalidate_interrupt22(void);
  63 extern void invalidate_interrupt23(void);
  64 extern void invalidate_interrupt24(void);
  65 extern void invalidate_interrupt25(void);
  66 extern void invalidate_interrupt26(void);
  67 extern void invalidate_interrupt27(void);
  68 extern void invalidate_interrupt28(void);
  69 extern void invalidate_interrupt29(void);
  70 extern void invalidate_interrupt30(void);
  71 extern void invalidate_interrupt31(void);
  72
  73 extern void irq_move_cleanup_interrupt(void);
  74 extern void reboot_interrupt(void);
  75 extern void threshold_interrupt(void);
  76
  77 extern void call_function_interrupt(void);
  78 extern void call_function_single_interrupt(void);
  79
  80 /* IOAPIC */
  81 #define IO_APIC_IRQ(x) (((x) >= NR_IRQS_LEGACY) || ((1<<(x)) & io_apic_irqs))
  82 extern unsigned long io_apic_irqs;
  83
  84 extern void init_VISWS_APIC_irqs(void);
  85 extern void setup_IO_APIC(void);
  86 extern void disable_IO_APIC(void);
  87
  88 struct io_apic_irq_attr {
  89         int ioapic;
  90         int ioapic_pin;
  91         int trigger;
  92         int polarity;
  93 };
  94
  95 static inline void set_io_apic_irq_attr(struct io_apic_irq_attr *irq_attr,
  96                                         int ioapic, int ioapic_pin,
  97                                         int trigger, int polarity)
  98 {
  99         irq_attr->ioapic        = ioapic;
 100         irq_attr->ioapic_pin    = ioapic_pin;
 101         irq_attr->trigger       = trigger;
 102         irq_attr->polarity      = polarity;
 103 }
 104
 105 struct irq_2_iommu {
 106         struct intel_iommu *iommu;
 107         u16 irte_index;
 108         u16 sub_handle;
 109         u8  irte_mask;
 110 };
 111
 112 /*
 113  * This is performance-critical, we want to do it O(1)
 114  *
 115  * Most irqs are mapped 1:1 with pins.
 116  */
 117 struct irq_cfg {
 118         struct irq_pin_list     *irq_2_pin;
 119         cpumask_var_t           domain;
 120         cpumask_var_t           old_domain;
 121         u8                      vector;
 122         u8                      move_in_progress : 1;
 123 #ifdef CONFIG_INTR_REMAP
 124         struct irq_2_iommu      irq_2_iommu;
 125 #endif
 126 };
 127
 128 extern int assign_irq_vector(int, struct irq_cfg *, const struct cpumask *);
 129 extern void send_cleanup_vector(struct irq_cfg *);
 130
 131 struct irq_data;
 132 int __ioapic_set_affinity(struct irq_data *, const struct cpumask *,
 133                           unsigned int *dest_id);
 134 extern int IO_APIC_get_PCI_irq_vector(int bus, int devfn, int pin, struct io_apic_irq_attr *irq_attr);
 135 extern void setup_ioapic_dest(void);
 136
 137 extern void enable_IO_APIC(void);
 138
 139 /* Statistics */
 140 extern atomic_t irq_err_count;
 141 extern atomic_t irq_mis_count;
 142
 143 /* EISA */
 144 extern void eisa_set_level_irq(unsigned int irq);
 145
 146 /* SMP */
 147 extern void smp_apic_timer_interrupt(struct pt_regs *);
 148 extern void smp_spurious_interrupt(struct pt_regs *);
 149 extern void smp_x86_platform_ipi(struct pt_regs *);
 150 extern void smp_error_interrupt(struct pt_regs *);
 151 #ifdef CONFIG_X86_IO_APIC
 152 extern asmlinkage void smp_irq_move_cleanup_interrupt(void);
 153 #endif
 154 #ifdef CONFIG_SMP
 155 extern void smp_reschedule_interrupt(struct pt_regs *);
 156 extern void smp_call_function_interrupt(struct pt_regs *);
 157 extern void smp_call_function_single_interrupt(struct pt_regs *);
 158 #ifdef CONFIG_X86_32
 159 extern void smp_invalidate_interrupt(struct pt_regs *);
 160 #else
 161 extern asmlinkage void smp_invalidate_interrupt(struct pt_regs *);
 162 #endif
 163 #endif
 164
 165 extern void (*__initconst interrupt[NR_VECTORS-FIRST_EXTERNAL_VECTOR])(void);
 166
 167 typedef int vector_irq_t[NR_VECTORS];
 168 DECLARE_PER_CPU(vector_irq_t, vector_irq);
 169 extern void setup_vector_irq(int cpu);
 170
 171 #ifdef CONFIG_X86_IO_APIC
 172 extern void lock_vector_lock(void);
 173 extern void unlock_vector_lock(void);
 174 extern void __setup_vector_irq(int cpu);
 175 #else
 176 static inline void lock_vector_lock(void) {}
 177 static inline void unlock_vector_lock(void) {}
 178 static inline void __setup_vector_irq(int cpu) {}
 179 #endif
 180
 181 #endif /* !ASSEMBLY_ */
 182
 183 #endif /* _ASM_X86_HW_IRQ_H */