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1965aae3 PA |
1 | #ifndef _ASM_X86_HW_IRQ_H |
2 | #define _ASM_X86_HW_IRQ_H | |
2e088436 TG |
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 | ||
9b7dc567 | 16 | #include <asm/irq_vectors.h> |
2e088436 TG |
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 | ||
2e088436 TG |
28 | /* Interrupt handlers registered during init_IRQ */ |
29 | extern void apic_timer_interrupt(void); | |
4a4de9c7 | 30 | extern void x86_platform_ipi(void); |
2e088436 | 31 | extern void error_interrupt(void); |
b6276f35 | 32 | extern void perf_pending_interrupt(void); |
241771ef | 33 | |
2e088436 TG |
34 | extern void spurious_interrupt(void); |
35 | extern void thermal_interrupt(void); | |
36 | extern void reschedule_interrupt(void); | |
ccc3c319 | 37 | extern void mce_self_interrupt(void); |
2e088436 TG |
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); | |
4ef702c1 | 50 | extern void reboot_interrupt(void); |
2e088436 TG |
51 | extern void threshold_interrupt(void); |
52 | ||
53 | extern void call_function_interrupt(void); | |
1a781a77 | 54 | extern void call_function_single_interrupt(void); |
2e088436 TG |
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 */ | |
abcaa2b8 | 64 | #define IO_APIC_IRQ(x) (((x) >= NR_IRQS_LEGACY) || ((1<<(x)) & io_apic_irqs)) |
2e088436 TG |
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); | |
e5198075 YL |
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 | { | |
9338ad6f DS |
82 | irq_attr->ioapic = ioapic; |
83 | irq_attr->ioapic_pin = ioapic_pin; | |
84 | irq_attr->trigger = trigger; | |
85 | irq_attr->polarity = polarity; | |
e5198075 YL |
86 | } |
87 | ||
9338ad6f DS |
88 | /* |
89 | * This is performance-critical, we want to do it O(1) | |
90 | * | |
91 | * Most irqs are mapped 1:1 with pins. | |
92 | */ | |
93 | struct irq_cfg { | |
94 | struct irq_pin_list *irq_2_pin; | |
95 | cpumask_var_t domain; | |
96 | cpumask_var_t old_domain; | |
9338ad6f DS |
97 | u8 vector; |
98 | u8 move_in_progress : 1; | |
99 | }; | |
100 | ||
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 *); | |
7ec13187 IM |
104 | |
105 | struct irq_desc; | |
18374d89 SS |
106 | extern unsigned int set_desc_affinity(struct irq_desc *, const struct cpumask *, |
107 | unsigned int *dest_id); | |
9338ad6f | 108 | extern int IO_APIC_get_PCI_irq_vector(int bus, int devfn, int pin, struct io_apic_irq_attr *irq_attr); |
2e088436 TG |
109 | extern void setup_ioapic_dest(void); |
110 | ||
97e7b6f5 | 111 | extern void enable_IO_APIC(void); |
97e7b6f5 | 112 | |
2e088436 TG |
113 | /* Statistics */ |
114 | extern atomic_t irq_err_count; | |
115 | extern atomic_t irq_mis_count; | |
116 | ||
1a331957 TG |
117 | /* EISA */ |
118 | extern void eisa_set_level_irq(unsigned int irq); | |
119 | ||
2b97df06 JS |
120 | /* SMP */ |
121 | extern void smp_apic_timer_interrupt(struct pt_regs *); | |
2b97df06 | 122 | extern void smp_spurious_interrupt(struct pt_regs *); |
4a4de9c7 | 123 | extern void smp_x86_platform_ipi(struct pt_regs *); |
2b97df06 | 124 | extern void smp_error_interrupt(struct pt_regs *); |
2c1b284e JSR |
125 | #ifdef CONFIG_X86_IO_APIC |
126 | extern asmlinkage void smp_irq_move_cleanup_interrupt(void); | |
127 | #endif | |
3e5095d1 | 128 | #ifdef CONFIG_SMP |
e7f08dfd JS |
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 *); | |
b2139aa0 JS |
132 | #ifdef CONFIG_X86_32 |
133 | extern void smp_invalidate_interrupt(struct pt_regs *); | |
134 | #else | |
135 | extern asmlinkage void smp_invalidate_interrupt(struct pt_regs *); | |
136 | #endif | |
e7f08dfd | 137 | #endif |
2b97df06 | 138 | |
4687518c | 139 | extern void (*__initconst interrupt[NR_VECTORS-FIRST_EXTERNAL_VECTOR])(void); |
497c9a19 | 140 | |
22dc12d1 TG |
141 | typedef int vector_irq_t[NR_VECTORS]; |
142 | DECLARE_PER_CPU(vector_irq_t, vector_irq); | |
d388e5fd | 143 | |
497c9a19 | 144 | #ifdef CONFIG_X86_IO_APIC |
d388e5fd EB |
145 | extern void lock_vector_lock(void); |
146 | extern void unlock_vector_lock(void); | |
147 | extern void __setup_vector_irq(int cpu); | |
148 | #else | |
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) {} | |
152 | #endif | |
2e088436 | 153 | |
22dc12d1 TG |
154 | #endif /* !ASSEMBLY_ */ |
155 | ||
1965aae3 | 156 | #endif /* _ASM_X86_HW_IRQ_H */ |