1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef _ASM_X86_HW_IRQ_H |
3 | #define _ASM_X86_HW_IRQ_H |
4 | |
5 | /* |
6 | * (C) 1992, 1993 Linus Torvalds, (C) 1997 Ingo Molnar |
7 | * |
8 | * moved some of the old arch/i386/kernel/irq.h to here. VY |
9 | * |
10 | * IRQ/IPI changes taken from work by Thomas Radke |
11 | * <tomsoft@informatik.tu-chemnitz.de> |
12 | * |
13 | * hacked by Andi Kleen for x86-64. |
14 | * unified by tglx |
15 | */ |
16 | |
17 | #include <asm/irq_vectors.h> |
18 | |
19 | #define IRQ_MATRIX_BITS NR_VECTORS |
20 | |
21 | #ifndef __ASSEMBLY__ |
22 | |
23 | #include <linux/percpu.h> |
24 | #include <linux/profile.h> |
25 | #include <linux/smp.h> |
26 | |
27 | #include <linux/atomic.h> |
28 | #include <asm/irq.h> |
29 | #include <asm/sections.h> |
30 | |
31 | /* Interrupt handlers registered during init_IRQ */ |
32 | extern asmlinkage void apic_timer_interrupt(void); |
33 | extern asmlinkage void x86_platform_ipi(void); |
34 | extern asmlinkage void kvm_posted_intr_ipi(void); |
35 | extern asmlinkage void kvm_posted_intr_wakeup_ipi(void); |
36 | extern asmlinkage void kvm_posted_intr_nested_ipi(void); |
37 | extern asmlinkage void error_interrupt(void); |
38 | extern asmlinkage void irq_work_interrupt(void); |
39 | extern asmlinkage void uv_bau_message_intr1(void); |
40 | |
41 | extern asmlinkage void spurious_interrupt(void); |
42 | extern asmlinkage void thermal_interrupt(void); |
43 | extern asmlinkage void reschedule_interrupt(void); |
44 | |
45 | extern asmlinkage void irq_move_cleanup_interrupt(void); |
46 | extern asmlinkage void reboot_interrupt(void); |
47 | extern asmlinkage void threshold_interrupt(void); |
48 | extern asmlinkage void deferred_error_interrupt(void); |
49 | |
50 | extern asmlinkage void call_function_interrupt(void); |
51 | extern asmlinkage void call_function_single_interrupt(void); |
52 | |
53 | #ifdef CONFIG_X86_LOCAL_APIC |
54 | struct irq_data; |
55 | struct pci_dev; |
56 | struct msi_desc; |
57 | |
58 | enum irq_alloc_type { |
59 | X86_IRQ_ALLOC_TYPE_IOAPIC = 1, |
60 | X86_IRQ_ALLOC_TYPE_HPET, |
61 | X86_IRQ_ALLOC_TYPE_MSI, |
62 | X86_IRQ_ALLOC_TYPE_MSIX, |
63 | X86_IRQ_ALLOC_TYPE_DMAR, |
64 | X86_IRQ_ALLOC_TYPE_UV, |
65 | }; |
66 | |
67 | struct irq_alloc_info { |
68 | enum irq_alloc_type type; |
69 | u32 flags; |
70 | const struct cpumask *mask; /* CPU mask for vector allocation */ |
71 | union { |
72 | int unused; |
73 | #ifdef CONFIG_HPET_TIMER |
74 | struct { |
75 | int hpet_id; |
76 | int hpet_index; |
77 | void *hpet_data; |
78 | }; |
79 | #endif |
80 | #ifdef CONFIG_PCI_MSI |
81 | struct { |
82 | struct pci_dev *msi_dev; |
83 | irq_hw_number_t msi_hwirq; |
84 | }; |
85 | #endif |
86 | #ifdef CONFIG_X86_IO_APIC |
87 | struct { |
88 | int ioapic_id; |
89 | int ioapic_pin; |
90 | int ioapic_node; |
91 | u32 ioapic_trigger : 1; |
92 | u32 ioapic_polarity : 1; |
93 | u32 ioapic_valid : 1; |
94 | struct IO_APIC_route_entry *ioapic_entry; |
95 | }; |
96 | #endif |
97 | #ifdef CONFIG_DMAR_TABLE |
98 | struct { |
99 | int dmar_id; |
100 | void *dmar_data; |
101 | }; |
102 | #endif |
103 | #ifdef CONFIG_X86_UV |
104 | struct { |
105 | int uv_limit; |
106 | int uv_blade; |
107 | unsigned long uv_offset; |
108 | char *uv_name; |
109 | }; |
110 | #endif |
111 | #if IS_ENABLED(CONFIG_VMD) |
112 | struct { |
113 | struct msi_desc *desc; |
114 | }; |
115 | #endif |
116 | }; |
117 | }; |
118 | |
119 | struct irq_cfg { |
120 | unsigned int dest_apicid; |
121 | unsigned int vector; |
122 | }; |
123 | |
124 | extern struct irq_cfg *irq_cfg(unsigned int irq); |
125 | extern struct irq_cfg *irqd_cfg(struct irq_data *irq_data); |
126 | extern void lock_vector_lock(void); |
127 | extern void unlock_vector_lock(void); |
128 | #ifdef CONFIG_SMP |
129 | extern void send_cleanup_vector(struct irq_cfg *); |
130 | extern void irq_complete_move(struct irq_cfg *cfg); |
131 | #else |
132 | static inline void send_cleanup_vector(struct irq_cfg *c) { } |
133 | static inline void irq_complete_move(struct irq_cfg *c) { } |
134 | #endif |
135 | |
136 | extern void apic_ack_edge(struct irq_data *data); |
137 | #else /* CONFIG_X86_LOCAL_APIC */ |
138 | static inline void lock_vector_lock(void) {} |
139 | static inline void unlock_vector_lock(void) {} |
140 | #endif /* CONFIG_X86_LOCAL_APIC */ |
141 | |
142 | /* Statistics */ |
143 | extern atomic_t irq_err_count; |
144 | extern atomic_t irq_mis_count; |
145 | |
146 | extern void elcr_set_level_irq(unsigned int irq); |
147 | |
148 | extern char irq_entries_start[]; |
149 | #ifdef CONFIG_TRACING |
150 | #define trace_irq_entries_start irq_entries_start |
151 | #endif |
152 | |
153 | #define VECTOR_UNUSED NULL |
154 | #define VECTOR_RETRIGGERED ((void *)~0UL) |
155 | |
156 | typedef struct irq_desc* vector_irq_t[NR_VECTORS]; |
157 | DECLARE_PER_CPU(vector_irq_t, vector_irq); |
158 | |
159 | #endif /* !ASSEMBLY_ */ |
160 | |
161 | #endif /* _ASM_X86_HW_IRQ_H */ |
162 | |