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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 */
32extern asmlinkage void apic_timer_interrupt(void);
33extern asmlinkage void x86_platform_ipi(void);
34extern asmlinkage void kvm_posted_intr_ipi(void);
35extern asmlinkage void kvm_posted_intr_wakeup_ipi(void);
36extern asmlinkage void kvm_posted_intr_nested_ipi(void);
37extern asmlinkage void error_interrupt(void);
38extern asmlinkage void irq_work_interrupt(void);
39extern asmlinkage void uv_bau_message_intr1(void);
40
41extern asmlinkage void spurious_interrupt(void);
42extern asmlinkage void thermal_interrupt(void);
43extern asmlinkage void reschedule_interrupt(void);
44
45extern asmlinkage void irq_move_cleanup_interrupt(void);
46extern asmlinkage void reboot_interrupt(void);
47extern asmlinkage void threshold_interrupt(void);
48extern asmlinkage void deferred_error_interrupt(void);
49
50extern asmlinkage void call_function_interrupt(void);
51extern asmlinkage void call_function_single_interrupt(void);
52
53#ifdef CONFIG_X86_LOCAL_APIC
54struct irq_data;
55struct pci_dev;
56struct msi_desc;
57
58enum 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
67struct 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
119struct irq_cfg {
120 unsigned int dest_apicid;
121 unsigned int vector;
122};
123
124extern struct irq_cfg *irq_cfg(unsigned int irq);
125extern struct irq_cfg *irqd_cfg(struct irq_data *irq_data);
126extern void lock_vector_lock(void);
127extern void unlock_vector_lock(void);
128#ifdef CONFIG_SMP
129extern void send_cleanup_vector(struct irq_cfg *);
130extern void irq_complete_move(struct irq_cfg *cfg);
131#else
132static inline void send_cleanup_vector(struct irq_cfg *c) { }
133static inline void irq_complete_move(struct irq_cfg *c) { }
134#endif
135
136extern void apic_ack_edge(struct irq_data *data);
137#else /* CONFIG_X86_LOCAL_APIC */
138static inline void lock_vector_lock(void) {}
139static inline void unlock_vector_lock(void) {}
140#endif /* CONFIG_X86_LOCAL_APIC */
141
142/* Statistics */
143extern atomic_t irq_err_count;
144extern atomic_t irq_mis_count;
145
146extern void elcr_set_level_irq(unsigned int irq);
147
148extern 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
156typedef struct irq_desc* vector_irq_t[NR_VECTORS];
157DECLARE_PER_CPU(vector_irq_t, vector_irq);
158
159#endif /* !ASSEMBLY_ */
160
161#endif /* _ASM_X86_HW_IRQ_H */
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#ifdef CONFIG_X86_LOCAL_APIC
32struct irq_data;
33struct pci_dev;
34struct msi_desc;
35
36enum irq_alloc_type {
37 X86_IRQ_ALLOC_TYPE_IOAPIC = 1,
38 X86_IRQ_ALLOC_TYPE_HPET,
39 X86_IRQ_ALLOC_TYPE_MSI,
40 X86_IRQ_ALLOC_TYPE_MSIX,
41 X86_IRQ_ALLOC_TYPE_DMAR,
42 X86_IRQ_ALLOC_TYPE_UV,
43};
44
45struct irq_alloc_info {
46 enum irq_alloc_type type;
47 u32 flags;
48 const struct cpumask *mask; /* CPU mask for vector allocation */
49 union {
50 int unused;
51#ifdef CONFIG_HPET_TIMER
52 struct {
53 int hpet_id;
54 int hpet_index;
55 void *hpet_data;
56 };
57#endif
58#ifdef CONFIG_PCI_MSI
59 struct {
60 struct pci_dev *msi_dev;
61 irq_hw_number_t msi_hwirq;
62 };
63#endif
64#ifdef CONFIG_X86_IO_APIC
65 struct {
66 int ioapic_id;
67 int ioapic_pin;
68 int ioapic_node;
69 u32 ioapic_trigger : 1;
70 u32 ioapic_polarity : 1;
71 u32 ioapic_valid : 1;
72 struct IO_APIC_route_entry *ioapic_entry;
73 };
74#endif
75#ifdef CONFIG_DMAR_TABLE
76 struct {
77 int dmar_id;
78 void *dmar_data;
79 };
80#endif
81#ifdef CONFIG_X86_UV
82 struct {
83 int uv_limit;
84 int uv_blade;
85 unsigned long uv_offset;
86 char *uv_name;
87 };
88#endif
89#if IS_ENABLED(CONFIG_VMD)
90 struct {
91 struct msi_desc *desc;
92 };
93#endif
94 };
95};
96
97struct irq_cfg {
98 unsigned int dest_apicid;
99 unsigned int vector;
100};
101
102extern struct irq_cfg *irq_cfg(unsigned int irq);
103extern struct irq_cfg *irqd_cfg(struct irq_data *irq_data);
104extern void lock_vector_lock(void);
105extern void unlock_vector_lock(void);
106#ifdef CONFIG_SMP
107extern void send_cleanup_vector(struct irq_cfg *);
108extern void irq_complete_move(struct irq_cfg *cfg);
109#else
110static inline void send_cleanup_vector(struct irq_cfg *c) { }
111static inline void irq_complete_move(struct irq_cfg *c) { }
112#endif
113
114extern void apic_ack_edge(struct irq_data *data);
115#else /* CONFIG_X86_LOCAL_APIC */
116static inline void lock_vector_lock(void) {}
117static inline void unlock_vector_lock(void) {}
118#endif /* CONFIG_X86_LOCAL_APIC */
119
120/* Statistics */
121extern atomic_t irq_err_count;
122extern atomic_t irq_mis_count;
123
124extern void elcr_set_level_irq(unsigned int irq);
125
126extern char irq_entries_start[];
127#ifdef CONFIG_TRACING
128#define trace_irq_entries_start irq_entries_start
129#endif
130
131extern char spurious_entries_start[];
132
133#define VECTOR_UNUSED NULL
134#define VECTOR_SHUTDOWN ((void *)-1L)
135#define VECTOR_RETRIGGERED ((void *)-2L)
136
137typedef struct irq_desc* vector_irq_t[NR_VECTORS];
138DECLARE_PER_CPU(vector_irq_t, vector_irq);
139
140#endif /* !ASSEMBLY_ */
141
142#endif /* _ASM_X86_HW_IRQ_H */