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>
19 #define IRQ_MATRIX_BITS NR_VECTORS
23 #include <linux/percpu.h>
24 #include <linux/profile.h>
25 #include <linux/smp.h>
27 #include <linux/atomic.h>
29 #include <asm/sections.h>
31 #ifdef CONFIG_X86_LOCAL_APIC
37 X86_IRQ_ALLOC_TYPE_IOAPIC = 1,
38 X86_IRQ_ALLOC_TYPE_HPET,
39 X86_IRQ_ALLOC_TYPE_PCI_MSI,
40 X86_IRQ_ALLOC_TYPE_PCI_MSIX,
41 X86_IRQ_ALLOC_TYPE_DMAR,
42 X86_IRQ_ALLOC_TYPE_UV,
43 X86_IRQ_ALLOC_TYPE_IOAPIC_GET_PARENT,
44 X86_IRQ_ALLOC_TYPE_HPET_GET_PARENT,
47 struct ioapic_alloc_info {
53 struct IO_APIC_route_entry *entry;
56 struct uv_alloc_info {
65 * irq_alloc_info - X86 specific interrupt allocation info
66 * @type: X86 specific allocation type
67 * @flags: Flags for allocation tweaks
68 * @devid: Device ID for allocations
69 * @hwirq: Associated hw interrupt number in the domain
70 * @mask: CPU mask for vector allocation
71 * @desc: Pointer to msi descriptor
72 * @data: Allocation specific data
74 * @ioapic: IOAPIC specific allocation data
75 * @uv: UV specific allocation data
77 struct irq_alloc_info {
78 enum irq_alloc_type type;
81 irq_hw_number_t hwirq;
82 const struct cpumask *mask;
83 struct msi_desc *desc;
87 struct ioapic_alloc_info ioapic;
88 struct uv_alloc_info uv;
93 unsigned int dest_apicid;
97 extern struct irq_cfg *irq_cfg(unsigned int irq);
98 extern struct irq_cfg *irqd_cfg(struct irq_data *irq_data);
99 extern void lock_vector_lock(void);
100 extern void unlock_vector_lock(void);
102 extern void send_cleanup_vector(struct irq_cfg *);
103 extern void irq_complete_move(struct irq_cfg *cfg);
105 static inline void send_cleanup_vector(struct irq_cfg *c) { }
106 static inline void irq_complete_move(struct irq_cfg *c) { }
109 extern void apic_ack_edge(struct irq_data *data);
110 #else /* CONFIG_X86_LOCAL_APIC */
111 static inline void lock_vector_lock(void) {}
112 static inline void unlock_vector_lock(void) {}
113 #endif /* CONFIG_X86_LOCAL_APIC */
116 extern atomic_t irq_err_count;
117 extern atomic_t irq_mis_count;
119 extern void elcr_set_level_irq(unsigned int irq);
121 extern char irq_entries_start[];
122 #ifdef CONFIG_TRACING
123 #define trace_irq_entries_start irq_entries_start
126 extern char spurious_entries_start[];
128 #define VECTOR_UNUSED NULL
129 #define VECTOR_SHUTDOWN ((void *)-1L)
130 #define VECTOR_RETRIGGERED ((void *)-2L)
132 typedef struct irq_desc* vector_irq_t[NR_VECTORS];
133 DECLARE_PER_CPU(vector_irq_t, vector_irq);
135 #endif /* !ASSEMBLY_ */
137 #endif /* _ASM_X86_HW_IRQ_H */