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 generic_interrupt(void);
31 extern void error_interrupt(void);
32 extern void perf_pending_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
49 extern void irq_move_cleanup_interrupt(void);
50 extern void reboot_interrupt(void);
51 extern void threshold_interrupt(void);
52
53 extern void call_function_interrupt(void);
54 extern void call_function_single_interrupt(void);
55
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);
62
63 /* IOAPIC */
64 #define IO_APIC_IRQ(x) (((x) >= NR_IRQS_LEGACY) || ((1<<(x)) & io_apic_irqs))
65 extern unsigned long io_apic_irqs;
66
67 extern void init_VISWS_APIC_irqs(void);
68 extern void setup_IO_APIC(void);
69 extern void disable_IO_APIC(void);
70
71 struct io_apic_irq_attr {
72 int ioapic;
73 int ioapic_pin;
74 int trigger;
75 int polarity;
76 };
77
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)
81 {
82 irq_attr->ioapic = ioapic;
83 irq_attr->ioapic_pin = ioapic_pin;
84 irq_attr->trigger = trigger;
85 irq_attr->polarity = polarity;
86 }
87
88 extern int IO_APIC_get_PCI_irq_vector(int bus, int devfn, int pin,
89 struct io_apic_irq_attr *irq_attr);
90 extern void setup_ioapic_dest(void);
91
92 extern void enable_IO_APIC(void);
93
94 /* Statistics */
95 extern atomic_t irq_err_count;
96 extern atomic_t irq_mis_count;
97
98 /* EISA */
99 extern void eisa_set_level_irq(unsigned int irq);
100
101 /* SMP */
102 extern void smp_apic_timer_interrupt(struct pt_regs *);
103 extern void smp_spurious_interrupt(struct pt_regs *);
104 extern void smp_generic_interrupt(struct pt_regs *);
105 extern void smp_error_interrupt(struct pt_regs *);
106 #ifdef CONFIG_X86_IO_APIC
107 extern asmlinkage void smp_irq_move_cleanup_interrupt(void);
108 #endif
109 #ifdef CONFIG_SMP
110 extern void smp_reschedule_interrupt(struct pt_regs *);
111 extern void smp_call_function_interrupt(struct pt_regs *);
112 extern void smp_call_function_single_interrupt(struct pt_regs *);
113 #ifdef CONFIG_X86_32
114 extern void smp_invalidate_interrupt(struct pt_regs *);
115 #else
116 extern asmlinkage void smp_invalidate_interrupt(struct pt_regs *);
117 #endif
118 #endif
119
120 extern void (*__initconst interrupt[NR_VECTORS-FIRST_EXTERNAL_VECTOR])(void);
121
122 typedef int vector_irq_t[NR_VECTORS];
123 DECLARE_PER_CPU(vector_irq_t, vector_irq);
124
125 #ifdef CONFIG_X86_IO_APIC
126 extern void lock_vector_lock(void);
127 extern void unlock_vector_lock(void);
128 extern void __setup_vector_irq(int cpu);
129 #else
130 static inline void lock_vector_lock(void) {}
131 static inline void unlock_vector_lock(void) {}
132 static inline void __setup_vector_irq(int cpu) {}
133 #endif
134
135 #endif /* !ASSEMBLY_ */
136
137 #endif /* _ASM_X86_HW_IRQ_H */
138
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