1 #ifndef _ASM_X86_HW_IRQ_H
2 #define _ASM_X86_HW_IRQ_H
5 * (C) 1992, 1993 Linus Torvalds, (C) 1997 Ingo Molnar
7 * moved some of the old arch/i386/kernel/irq.h to here. VY
9 * IRQ/IPI changes taken from work by Thomas Radke
10 * <tomsoft@informatik.tu-chemnitz.de>
12 * hacked by Andi Kleen for x86-64.
16 #include <asm/irq_vectors.h>
20 #include <linux/percpu.h>
21 #include <linux/profile.h>
22 #include <linux/smp.h>
24 #include <asm/atomic.h>
26 #include <asm/sections.h>
28 /* Interrupt handlers registered during init_IRQ */
29 extern void apic_timer_interrupt(void);
30 extern void generic_interrupt(void);
31 extern void error_interrupt(void);
32 extern void perf_pending_interrupt(void);
34 extern void spurious_interrupt(void);
35 extern void thermal_interrupt(void);
36 extern void reschedule_interrupt(void);
38 extern void invalidate_interrupt(void);
39 extern void invalidate_interrupt0(void);
40 extern void invalidate_interrupt1(void);
41 extern void invalidate_interrupt2(void);
42 extern void invalidate_interrupt3(void);
43 extern void invalidate_interrupt4(void);
44 extern void invalidate_interrupt5(void);
45 extern void invalidate_interrupt6(void);
46 extern void invalidate_interrupt7(void);
48 extern void irq_move_cleanup_interrupt(void);
49 extern void threshold_interrupt(void);
51 extern void call_function_interrupt(void);
52 extern void call_function_single_interrupt(void);
54 /* PIC specific functions */
55 extern void disable_8259A_irq(unsigned int irq);
56 extern void enable_8259A_irq(unsigned int irq);
57 extern int i8259A_irq_pending(unsigned int irq);
58 extern void make_8259A_irq(unsigned int irq);
59 extern void init_8259A(int aeoi);
62 #define IO_APIC_IRQ(x) (((x) >= NR_IRQS_LEGACY) || ((1<<(x)) & io_apic_irqs))
63 extern unsigned long io_apic_irqs;
65 extern void init_VISWS_APIC_irqs(void);
66 extern void setup_IO_APIC(void);
67 extern void disable_IO_APIC(void);
69 struct io_apic_irq_attr {
76 static inline void set_io_apic_irq_attr(struct io_apic_irq_attr *irq_attr,
77 int ioapic, int ioapic_pin,
78 int trigger, int polarity)
80 irq_attr->ioapic = ioapic;
81 irq_attr->ioapic_pin = ioapic_pin;
82 irq_attr->trigger = trigger;
83 irq_attr->polarity = polarity;
86 extern int IO_APIC_get_PCI_irq_vector(int bus, int devfn, int pin,
87 struct io_apic_irq_attr *irq_attr);
88 extern void setup_ioapic_dest(void);
90 extern void enable_IO_APIC(void);
93 extern atomic_t irq_err_count;
94 extern atomic_t irq_mis_count;
97 extern void eisa_set_level_irq(unsigned int irq);
100 extern void smp_apic_timer_interrupt(struct pt_regs *);
101 extern void smp_spurious_interrupt(struct pt_regs *);
102 extern void smp_generic_interrupt(struct pt_regs *);
103 extern void smp_error_interrupt(struct pt_regs *);
104 #ifdef CONFIG_X86_IO_APIC
105 extern asmlinkage void smp_irq_move_cleanup_interrupt(void);
108 extern void smp_reschedule_interrupt(struct pt_regs *);
109 extern void smp_call_function_interrupt(struct pt_regs *);
110 extern void smp_call_function_single_interrupt(struct pt_regs *);
112 extern void smp_invalidate_interrupt(struct pt_regs *);
114 extern asmlinkage void smp_invalidate_interrupt(struct pt_regs *);
118 extern void (*__initconst interrupt[NR_VECTORS-FIRST_EXTERNAL_VECTOR])(void);
120 typedef int vector_irq_t[NR_VECTORS];
121 DECLARE_PER_CPU(vector_irq_t, vector_irq);
123 #ifdef CONFIG_X86_IO_APIC
124 extern void lock_vector_lock(void);
125 extern void unlock_vector_lock(void);
126 extern void __setup_vector_irq(int cpu);
128 static inline void lock_vector_lock(void) {}
129 static inline void unlock_vector_lock(void) {}
130 static inline void __setup_vector_irq(int cpu) {}
133 #endif /* !ASSEMBLY_ */
135 #endif /* _ASM_X86_HW_IRQ_H */