1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ASM_X86_NMI_H
3#define _ASM_X86_NMI_H
4
5#include <linux/irq_work.h>
6#include <linux/pm.h>
7#include <asm/irq.h>
8#include <asm/io.h>
9
10#ifdef CONFIG_X86_LOCAL_APIC
11
12extern int reserve_perfctr_nmi(unsigned int);
13extern void release_perfctr_nmi(unsigned int);
14extern int reserve_evntsel_nmi(unsigned int);
15extern void release_evntsel_nmi(unsigned int);
16
17extern int unknown_nmi_panic;
18
19#endif /* CONFIG_X86_LOCAL_APIC */
20
21#define NMI_FLAG_FIRST 1
22
23enum {
24 NMI_LOCAL=0,
25 NMI_UNKNOWN,
26 NMI_SERR,
27 NMI_IO_CHECK,
28 NMI_MAX
29};
30
31#define NMI_DONE 0
32#define NMI_HANDLED 1
33
34typedef int (*nmi_handler_t)(unsigned int, struct pt_regs *);
35
36struct nmiaction {
37 struct list_head list;
38 nmi_handler_t handler;
39 u64 max_duration;
40 unsigned long flags;
41 const char *name;
42};
43
44#define register_nmi_handler(t, fn, fg, n, init...) \
45({ \
46 static struct nmiaction init fn##_na = { \
47 .list = LIST_HEAD_INIT(fn##_na.list), \
48 .handler = (fn), \
49 .name = (n), \
50 .flags = (fg), \
51 }; \
52 __register_nmi_handler((t), &fn##_na); \
53})
54
55int __register_nmi_handler(unsigned int, struct nmiaction *);
56
57void unregister_nmi_handler(unsigned int, const char *);
58
59void stop_nmi(void);
60void restart_nmi(void);
61void local_touch_nmi(void);
62
63#endif /* _ASM_X86_NMI_H */
64

source code of linux/arch/x86/include/asm/nmi.h