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 #define platform_legacy_irq(irq)        ((irq) < 16)
  29
  30 /* Interrupt handlers registered during init_IRQ */
  31 extern void apic_timer_interrupt(void);
  32 extern void error_interrupt(void);
  33 extern void spurious_interrupt(void);
  34 extern void thermal_interrupt(void);
  35 extern void reschedule_interrupt(void);
  36
  37 extern void invalidate_interrupt(void);
  38 extern void invalidate_interrupt0(void);
  39 extern void invalidate_interrupt1(void);
  40 extern void invalidate_interrupt2(void);
  41 extern void invalidate_interrupt3(void);
  42 extern void invalidate_interrupt4(void);
  43 extern void invalidate_interrupt5(void);
  44 extern void invalidate_interrupt6(void);
  45 extern void invalidate_interrupt7(void);
  46
  47 extern void irq_move_cleanup_interrupt(void);
  48 extern void threshold_interrupt(void);
  49
  50 extern void call_function_interrupt(void);
  51 extern void call_function_single_interrupt(void);
  52
  53 /* PIC specific functions */
  54 extern void disable_8259A_irq(unsigned int irq);
  55 extern void enable_8259A_irq(unsigned int irq);
  56 extern int i8259A_irq_pending(unsigned int irq);
  57 extern void make_8259A_irq(unsigned int irq);
  58 extern void init_8259A(int aeoi);
  59
  60 /* IOAPIC */
  61 #define IO_APIC_IRQ(x) (((x) >= 16) || ((1<<(x)) & io_apic_irqs))
  62 extern unsigned long io_apic_irqs;
  63
  64 extern void init_VISWS_APIC_irqs(void);
  65 extern void setup_IO_APIC(void);
  66 extern void disable_IO_APIC(void);
  67 extern int IO_APIC_get_PCI_irq_vector(int bus, int slot, int fn);
  68 extern void setup_ioapic_dest(void);
  69
  70 #ifdef CONFIG_X86_64
  71 extern void enable_IO_APIC(void);
  72 #endif
  73
  74 /* IPI functions */
  75 #ifdef CONFIG_X86_32
  76 extern void send_IPI_self(int vector);
  77 #endif
  78 extern void send_IPI(int dest, int vector);
  79
  80 /* Statistics */
  81 extern atomic_t irq_err_count;
  82 extern atomic_t irq_mis_count;
  83
  84 /* EISA */
  85 extern void eisa_set_level_irq(unsigned int irq);
  86
  87 /* Voyager functions */
  88 extern asmlinkage void vic_cpi_interrupt(void);
  89 extern asmlinkage void vic_sys_interrupt(void);
  90 extern asmlinkage void vic_cmn_interrupt(void);
  91 extern asmlinkage void qic_timer_interrupt(void);
  92 extern asmlinkage void qic_invalidate_interrupt(void);
  93 extern asmlinkage void qic_reschedule_interrupt(void);
  94 extern asmlinkage void qic_enable_irq_interrupt(void);
  95 extern asmlinkage void qic_call_function_interrupt(void);
  96
  97 /* SMP */
  98 extern void smp_apic_timer_interrupt(struct pt_regs *);
  99 extern void smp_spurious_interrupt(struct pt_regs *);
 100 extern void smp_error_interrupt(struct pt_regs *);
 101 #ifdef CONFIG_X86_SMP
 102 extern void smp_reschedule_interrupt(struct pt_regs *);
 103 extern void smp_call_function_interrupt(struct pt_regs *);
 104 extern void smp_call_function_single_interrupt(struct pt_regs *);
 105 #ifdef CONFIG_X86_32
 106 extern void smp_invalidate_interrupt(struct pt_regs *);
 107 #else
 108 extern asmlinkage void smp_invalidate_interrupt(struct pt_regs *);
 109 #endif
 110 #endif
 111
 112 extern void (*__initconst interrupt[NR_VECTORS-FIRST_EXTERNAL_VECTOR])(void);
 113
 114 typedef int vector_irq_t[NR_VECTORS];
 115 DECLARE_PER_CPU(vector_irq_t, vector_irq);
 116
 117 #ifdef CONFIG_X86_IO_APIC
 118 extern void lock_vector_lock(void);
 119 extern void unlock_vector_lock(void);
 120 extern void __setup_vector_irq(int cpu);
 121 #else
 122 static inline void lock_vector_lock(void) {}
 123 static inline void unlock_vector_lock(void) {}
 124 static inline void __setup_vector_irq(int cpu) {}
 125 #endif
 126
 127 #endif /* !ASSEMBLY_ */
 128
 129 #endif /* _ASM_X86_HW_IRQ_H */