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 | |
12 | extern int avail_to_resrv_perfctr_nmi_bit(unsigned int); |
13 | extern int reserve_perfctr_nmi(unsigned int); |
14 | extern void release_perfctr_nmi(unsigned int); |
15 | extern int reserve_evntsel_nmi(unsigned int); |
16 | extern void release_evntsel_nmi(unsigned int); |
17 | |
18 | struct ctl_table; |
19 | extern int proc_nmi_enabled(struct ctl_table *, int , |
20 | void __user *, size_t *, loff_t *); |
21 | extern int unknown_nmi_panic; |
22 | |
23 | #endif /* CONFIG_X86_LOCAL_APIC */ |
24 | |
25 | #define NMI_FLAG_FIRST 1 |
26 | |
27 | enum { |
28 | NMI_LOCAL=0, |
29 | NMI_UNKNOWN, |
30 | NMI_SERR, |
31 | NMI_IO_CHECK, |
32 | NMI_MAX |
33 | }; |
34 | |
35 | #define NMI_DONE 0 |
36 | #define NMI_HANDLED 1 |
37 | |
38 | typedef int (*nmi_handler_t)(unsigned int, struct pt_regs *); |
39 | |
40 | struct nmiaction { |
41 | struct list_head list; |
42 | nmi_handler_t handler; |
43 | u64 max_duration; |
44 | struct irq_work irq_work; |
45 | unsigned long flags; |
46 | const char *name; |
47 | }; |
48 | |
49 | #define register_nmi_handler(t, fn, fg, n, init...) \ |
50 | ({ \ |
51 | static struct nmiaction init fn##_na = { \ |
52 | .handler = (fn), \ |
53 | .name = (n), \ |
54 | .flags = (fg), \ |
55 | }; \ |
56 | __register_nmi_handler((t), &fn##_na); \ |
57 | }) |
58 | |
59 | int __register_nmi_handler(unsigned int, struct nmiaction *); |
60 | |
61 | void unregister_nmi_handler(unsigned int, const char *); |
62 | |
63 | void stop_nmi(void); |
64 | void restart_nmi(void); |
65 | void local_touch_nmi(void); |
66 | |
67 | #endif /* _ASM_X86_NMI_H */ |
68 | |