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 #define platform_legacy_irq(irq) ((irq) < 16)
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);
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);
47 extern void irq_move_cleanup_interrupt(void);
48 extern void threshold_interrupt(void);
50 extern void call_function_interrupt(void);
51 extern void call_function_single_interrupt(void);
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);
61 #define IO_APIC_IRQ(x) (((x) >= 16) || ((1<<(x)) & io_apic_irqs))
62 extern unsigned long io_apic_irqs;
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);
71 extern void enable_IO_APIC(void);
76 extern void send_IPI_self(int vector);
78 extern void send_IPI(int dest, int vector);
81 extern atomic_t irq_err_count;
82 extern atomic_t irq_mis_count;
85 extern void eisa_set_level_irq(unsigned int irq);
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);
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 *);
106 extern void smp_invalidate_interrupt(struct pt_regs *);
108 extern asmlinkage void smp_invalidate_interrupt(struct pt_regs *);
112 extern void (*__initconst interrupt[NR_VECTORS-FIRST_EXTERNAL_VECTOR])(void);
114 typedef int vector_irq_t[NR_VECTORS];
115 DECLARE_PER_CPU(vector_irq_t, vector_irq);
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);
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) {}
127 #endif /* !ASSEMBLY_ */
129 #endif /* _ASM_X86_HW_IRQ_H */