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 <linux/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 x86_platform_ipi(void);
31 extern void error_interrupt(void);
32 extern void irq_work_interrupt(void);
33
34 extern void spurious_interrupt(void);
35 extern void thermal_interrupt(void);
36 extern void reschedule_interrupt(void);
37
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);
47 extern void invalidate_interrupt8(void);
48 extern void invalidate_interrupt9(void);
49 extern void invalidate_interrupt10(void);
50 extern void invalidate_interrupt11(void);
51 extern void invalidate_interrupt12(void);
52 extern void invalidate_interrupt13(void);
53 extern void invalidate_interrupt14(void);
54 extern void invalidate_interrupt15(void);
55 extern void invalidate_interrupt16(void);
56 extern void invalidate_interrupt17(void);
57 extern void invalidate_interrupt18(void);
58 extern void invalidate_interrupt19(void);
59 extern void invalidate_interrupt20(void);
60 extern void invalidate_interrupt21(void);
61 extern void invalidate_interrupt22(void);
62 extern void invalidate_interrupt23(void);
63 extern void invalidate_interrupt24(void);
64 extern void invalidate_interrupt25(void);
65 extern void invalidate_interrupt26(void);
66 extern void invalidate_interrupt27(void);
67 extern void invalidate_interrupt28(void);
68 extern void invalidate_interrupt29(void);
69 extern void invalidate_interrupt30(void);
70 extern void invalidate_interrupt31(void);
71
72 extern void irq_move_cleanup_interrupt(void);
73 extern void reboot_interrupt(void);
74 extern void threshold_interrupt(void);
75
76 extern void call_function_interrupt(void);
77 extern void call_function_single_interrupt(void);
78
79 /* IOAPIC */
80 #define IO_APIC_IRQ(x) (((x) >= NR_IRQS_LEGACY) || ((1<<(x)) & io_apic_irqs))
81 extern unsigned long io_apic_irqs;
82
83 extern void init_VISWS_APIC_irqs(void);
84 extern void setup_IO_APIC(void);
85 extern void disable_IO_APIC(void);
86
87 struct io_apic_irq_attr {
88 int ioapic;
89 int ioapic_pin;
90 int trigger;
91 int polarity;
92 };
93
set_io_apic_irq_attr(struct io_apic_irq_attr * irq_attr,int ioapic,int ioapic_pin,int trigger,int polarity)94 static inline void set_io_apic_irq_attr(struct io_apic_irq_attr *irq_attr,
95 int ioapic, int ioapic_pin,
96 int trigger, int polarity)
97 {
98 irq_attr->ioapic = ioapic;
99 irq_attr->ioapic_pin = ioapic_pin;
100 irq_attr->trigger = trigger;
101 irq_attr->polarity = polarity;
102 }
103
104 struct irq_2_iommu {
105 struct intel_iommu *iommu;
106 u16 irte_index;
107 u16 sub_handle;
108 u8 irte_mask;
109 };
110
111 /*
112 * This is performance-critical, we want to do it O(1)
113 *
114 * Most irqs are mapped 1:1 with pins.
115 */
116 struct irq_cfg {
117 struct irq_pin_list *irq_2_pin;
118 cpumask_var_t domain;
119 cpumask_var_t old_domain;
120 u8 vector;
121 u8 move_in_progress : 1;
122 #ifdef CONFIG_IRQ_REMAP
123 struct irq_2_iommu irq_2_iommu;
124 #endif
125 };
126
127 extern int assign_irq_vector(int, struct irq_cfg *, const struct cpumask *);
128 extern void send_cleanup_vector(struct irq_cfg *);
129
130 struct irq_data;
131 int __ioapic_set_affinity(struct irq_data *, const struct cpumask *,
132 unsigned int *dest_id);
133 extern int IO_APIC_get_PCI_irq_vector(int bus, int devfn, int pin, struct io_apic_irq_attr *irq_attr);
134 extern void setup_ioapic_dest(void);
135
136 extern void enable_IO_APIC(void);
137
138 /* Statistics */
139 extern atomic_t irq_err_count;
140 extern atomic_t irq_mis_count;
141
142 /* EISA */
143 extern void eisa_set_level_irq(unsigned int irq);
144
145 /* SMP */
146 extern void smp_apic_timer_interrupt(struct pt_regs *);
147 extern void smp_spurious_interrupt(struct pt_regs *);
148 extern void smp_x86_platform_ipi(struct pt_regs *);
149 extern void smp_error_interrupt(struct pt_regs *);
150 #ifdef CONFIG_X86_IO_APIC
151 extern asmlinkage void smp_irq_move_cleanup_interrupt(void);
152 #endif
153 #ifdef CONFIG_SMP
154 extern void smp_reschedule_interrupt(struct pt_regs *);
155 extern void smp_call_function_interrupt(struct pt_regs *);
156 extern void smp_call_function_single_interrupt(struct pt_regs *);
157 #ifdef CONFIG_X86_32
158 extern void smp_invalidate_interrupt(struct pt_regs *);
159 #else
160 extern asmlinkage void smp_invalidate_interrupt(struct pt_regs *);
161 #endif
162 #endif
163
164 extern void (*__initconst interrupt[NR_VECTORS-FIRST_EXTERNAL_VECTOR])(void);
165
166 typedef int vector_irq_t[NR_VECTORS];
167 DECLARE_PER_CPU(vector_irq_t, vector_irq);
168 extern void setup_vector_irq(int cpu);
169
170 #ifdef CONFIG_X86_IO_APIC
171 extern void lock_vector_lock(void);
172 extern void unlock_vector_lock(void);
173 extern void __setup_vector_irq(int cpu);
174 #else
lock_vector_lock(void)175 static inline void lock_vector_lock(void) {}
unlock_vector_lock(void)176 static inline void unlock_vector_lock(void) {}
__setup_vector_irq(int cpu)177 static inline void __setup_vector_irq(int cpu) {}
178 #endif
179
180 #endif /* !ASSEMBLY_ */
181
182 #endif /* _ASM_X86_HW_IRQ_H */
183