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_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,
45};
46
47struct ioapic_alloc_info {
48	int				pin;
49	int				node;
50	u32				trigger : 1;
51	u32				polarity : 1;
52	u32				valid : 1;
53	struct IO_APIC_route_entry	*entry;
54};
55
56struct uv_alloc_info {
57	int		limit;
58	int		blade;
59	unsigned long	offset;
60	char		*name;
61
62};
63
64/**
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
73 *
74 * @ioapic:	IOAPIC specific allocation data
75 * @uv:		UV specific allocation data
76*/
77struct irq_alloc_info {
78	enum irq_alloc_type	type;
79	u32			flags;
80	u32			devid;
81	irq_hw_number_t		hwirq;
82	const struct cpumask	*mask;
83	struct msi_desc		*desc;
84	void			*data;
85
86	union {
87		struct ioapic_alloc_info	ioapic;
88		struct uv_alloc_info		uv;
89	};
90};
91
92struct irq_cfg {
93	unsigned int		dest_apicid;
94	unsigned int		vector;
95};
96
97extern struct irq_cfg *irq_cfg(unsigned int irq);
98extern struct irq_cfg *irqd_cfg(struct irq_data *irq_data);
99extern void lock_vector_lock(void);
100extern void unlock_vector_lock(void);
101#ifdef CONFIG_SMP
102extern void send_cleanup_vector(struct irq_cfg *);
103extern void irq_complete_move(struct irq_cfg *cfg);
104#else
105static inline void send_cleanup_vector(struct irq_cfg *c) { }
106static inline void irq_complete_move(struct irq_cfg *c) { }
107#endif
108
109extern void apic_ack_edge(struct irq_data *data);
110#else	/*  CONFIG_X86_LOCAL_APIC */
111static inline void lock_vector_lock(void) {}
112static inline void unlock_vector_lock(void) {}
113#endif	/* CONFIG_X86_LOCAL_APIC */
114
115/* Statistics */
116extern atomic_t irq_err_count;
117extern atomic_t irq_mis_count;
118
119extern void elcr_set_level_irq(unsigned int irq);
120
121extern char irq_entries_start[];
122#ifdef CONFIG_TRACING
123#define trace_irq_entries_start irq_entries_start
124#endif
125
126extern char spurious_entries_start[];
127
128#define VECTOR_UNUSED		NULL
129#define VECTOR_SHUTDOWN		((void *)-1L)
130#define VECTOR_RETRIGGERED	((void *)-2L)
131
132typedef struct irq_desc* vector_irq_t[NR_VECTORS];
133DECLARE_PER_CPU(vector_irq_t, vector_irq);
134
135#endif /* !ASSEMBLY_ */
136
137#endif /* _ASM_X86_HW_IRQ_H */
138