1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_X86_HW_IRQ_H
3 #define _ASM_X86_HW_IRQ_H
6 * (C) 1992, 1993 Linus Torvalds, (C) 1997 Ingo Molnar
8 * moved some of the old arch/i386/kernel/irq.h to here. VY
10 * IRQ/IPI changes taken from work by Thomas Radke
11 * <tomsoft@informatik.tu-chemnitz.de>
13 * hacked by Andi Kleen for x86-64.
17 #include <asm/irq_vectors.h>
21 #include <linux/percpu.h>
22 #include <linux/profile.h>
23 #include <linux/smp.h>
25 #include <linux/atomic.h>
27 #include <asm/sections.h>
29 /* Interrupt handlers registered during init_IRQ */
30 extern asmlinkage void apic_timer_interrupt(void);
31 extern asmlinkage void x86_platform_ipi(void);
32 extern asmlinkage void kvm_posted_intr_ipi(void);
33 extern asmlinkage void kvm_posted_intr_wakeup_ipi(void);
34 extern asmlinkage void kvm_posted_intr_nested_ipi(void);
35 extern asmlinkage void error_interrupt(void);
36 extern asmlinkage void irq_work_interrupt(void);
38 extern asmlinkage void spurious_interrupt(void);
39 extern asmlinkage void thermal_interrupt(void);
40 extern asmlinkage void reschedule_interrupt(void);
42 extern asmlinkage void irq_move_cleanup_interrupt(void);
43 extern asmlinkage void reboot_interrupt(void);
44 extern asmlinkage void threshold_interrupt(void);
45 extern asmlinkage void deferred_error_interrupt(void);
47 extern asmlinkage void call_function_interrupt(void);
48 extern asmlinkage void call_function_single_interrupt(void);
50 #ifdef CONFIG_X86_LOCAL_APIC
56 X86_IRQ_ALLOC_TYPE_IOAPIC = 1,
57 X86_IRQ_ALLOC_TYPE_HPET,
58 X86_IRQ_ALLOC_TYPE_MSI,
59 X86_IRQ_ALLOC_TYPE_MSIX,
60 X86_IRQ_ALLOC_TYPE_DMAR,
61 X86_IRQ_ALLOC_TYPE_UV,
64 struct irq_alloc_info {
65 enum irq_alloc_type type;
67 const struct cpumask *mask; /* CPU mask for vector allocation */
70 #ifdef CONFIG_HPET_TIMER
79 struct pci_dev *msi_dev;
80 irq_hw_number_t msi_hwirq;
83 #ifdef CONFIG_X86_IO_APIC
88 u32 ioapic_trigger : 1;
89 u32 ioapic_polarity : 1;
91 struct IO_APIC_route_entry *ioapic_entry;
94 #ifdef CONFIG_DMAR_TABLE
104 struct pci_dev *ht_dev;
112 unsigned long uv_offset;
116 #if IS_ENABLED(CONFIG_VMD)
118 struct msi_desc *desc;
125 unsigned int dest_apicid;
130 extern struct irq_cfg *irq_cfg(unsigned int irq);
131 extern struct irq_cfg *irqd_cfg(struct irq_data *irq_data);
132 extern void lock_vector_lock(void);
133 extern void unlock_vector_lock(void);
134 extern void setup_vector_irq(int cpu);
136 extern void send_cleanup_vector(struct irq_cfg *);
137 extern void irq_complete_move(struct irq_cfg *cfg);
139 static inline void send_cleanup_vector(struct irq_cfg *c) { }
140 static inline void irq_complete_move(struct irq_cfg *c) { }
143 extern void apic_ack_edge(struct irq_data *data);
144 #else /* CONFIG_X86_LOCAL_APIC */
145 static inline void lock_vector_lock(void) {}
146 static inline void unlock_vector_lock(void) {}
147 #endif /* CONFIG_X86_LOCAL_APIC */
150 extern atomic_t irq_err_count;
151 extern atomic_t irq_mis_count;
153 extern void elcr_set_level_irq(unsigned int irq);
155 extern char irq_entries_start[];
156 #ifdef CONFIG_TRACING
157 #define trace_irq_entries_start irq_entries_start
160 #define VECTOR_UNUSED NULL
161 #define VECTOR_RETRIGGERED ((void *)~0UL)
163 typedef struct irq_desc* vector_irq_t[NR_VECTORS];
164 DECLARE_PER_CPU(vector_irq_t, vector_irq);
166 #endif /* !ASSEMBLY_ */
168 #endif /* _ASM_X86_HW_IRQ_H */