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 x86_platform_ipi(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);
37 extern void mce_self_interrupt(void);
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);
49 extern void irq_move_cleanup_interrupt(void);
50 extern void reboot_interrupt(void);
51 extern void threshold_interrupt(void);
53 extern void call_function_interrupt(void);
54 extern void call_function_single_interrupt(void);
56 /* PIC specific functions */
57 extern void disable_8259A_irq(unsigned int irq);
58 extern void enable_8259A_irq(unsigned int irq);
59 extern int i8259A_irq_pending(unsigned int irq);
60 extern void make_8259A_irq(unsigned int irq);
61 extern void init_8259A(int aeoi);
64 #define IO_APIC_IRQ(x) (((x) >= NR_IRQS_LEGACY) || ((1<<(x)) & io_apic_irqs))
65 extern unsigned long io_apic_irqs;
67 extern void init_VISWS_APIC_irqs(void);
68 extern void setup_IO_APIC(void);
69 extern void disable_IO_APIC(void);
71 struct io_apic_irq_attr {
78 static inline void set_io_apic_irq_attr(struct io_apic_irq_attr *irq_attr,
79 int ioapic, int ioapic_pin,
80 int trigger, int polarity)
82 irq_attr->ioapic = ioapic;
83 irq_attr->ioapic_pin = ioapic_pin;
84 irq_attr->trigger = trigger;
85 irq_attr->polarity = polarity;
89 * This is performance-critical, we want to do it O(1)
91 * Most irqs are mapped 1:1 with pins.
94 struct irq_pin_list *irq_2_pin;
96 cpumask_var_t old_domain;
98 u8 move_in_progress : 1;
101 extern struct irq_cfg *irq_cfg(unsigned int);
102 extern int assign_irq_vector(int, struct irq_cfg *, const struct cpumask *);
103 extern void send_cleanup_vector(struct irq_cfg *);
106 extern unsigned int set_desc_affinity(struct irq_desc *, const struct cpumask *,
107 unsigned int *dest_id);
108 extern int IO_APIC_get_PCI_irq_vector(int bus, int devfn, int pin, struct io_apic_irq_attr *irq_attr);
109 extern void setup_ioapic_dest(void);
111 extern void enable_IO_APIC(void);
114 extern atomic_t irq_err_count;
115 extern atomic_t irq_mis_count;
118 extern void eisa_set_level_irq(unsigned int irq);
121 extern void smp_apic_timer_interrupt(struct pt_regs *);
122 extern void smp_spurious_interrupt(struct pt_regs *);
123 extern void smp_x86_platform_ipi(struct pt_regs *);
124 extern void smp_error_interrupt(struct pt_regs *);
125 #ifdef CONFIG_X86_IO_APIC
126 extern asmlinkage void smp_irq_move_cleanup_interrupt(void);
129 extern void smp_reschedule_interrupt(struct pt_regs *);
130 extern void smp_call_function_interrupt(struct pt_regs *);
131 extern void smp_call_function_single_interrupt(struct pt_regs *);
133 extern void smp_invalidate_interrupt(struct pt_regs *);
135 extern asmlinkage void smp_invalidate_interrupt(struct pt_regs *);
139 extern void (*__initconst interrupt[NR_VECTORS-FIRST_EXTERNAL_VECTOR])(void);
141 typedef int vector_irq_t[NR_VECTORS];
142 DECLARE_PER_CPU(vector_irq_t, vector_irq);
144 #ifdef CONFIG_X86_IO_APIC
145 extern void lock_vector_lock(void);
146 extern void unlock_vector_lock(void);
147 extern void __setup_vector_irq(int cpu);
149 static inline void lock_vector_lock(void) {}
150 static inline void unlock_vector_lock(void) {}
151 static inline void __setup_vector_irq(int cpu) {}
154 #endif /* !ASSEMBLY_ */
156 #endif /* _ASM_X86_HW_IRQ_H */