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gerrit-public.fairphone.software / kernel / msm-4.9 / dfc65094d0313cc48969fa60bcf33d693aeb05a7 / . / arch / x86 / include / asm / nmi.h
blob: e63cf7d441e1351071997f4524315171c677e952 [file] [log] [blame]
H. Peter Anvin1965aae2008-10-22 22:26:29 -0700[diff] [blame]1#ifndef _ASM_X86_NMI_H
2#define _ASM_X86_NMI_H
Glauber de Oliveira Costa6d60cd52008-03-19 14:25:36 -0300[diff] [blame]3
4#include <linux/pm.h>
5#include <asm/irq.h>
6#include <asm/io.h>
7
8#ifdef ARCH_HAS_NMI_WATCHDOG
9
10/**
11 * do_nmi_callback
12 *
13 * Check to see if a callback exists and execute it. Return 1
14 * if the handler exists and was handled successfully.
15 */
16int do_nmi_callback(struct pt_regs *regs, int cpu);
17
Cyrill Gorcunovddca03c2008-05-24 19:36:31 +0400[diff] [blame]18extern void die_nmi(char *str, struct pt_regs *regs, int do_panic);
Glauber de Oliveira Costa6d60cd52008-03-19 14:25:36 -0300[diff] [blame]19extern int check_nmi_watchdog(void);
20extern int nmi_watchdog_enabled;
Glauber de Oliveira Costa6d60cd52008-03-19 14:25:36 -0300[diff] [blame]21extern int avail_to_resrv_perfctr_nmi_bit(unsigned int);
22extern int avail_to_resrv_perfctr_nmi(unsigned int);
23extern int reserve_perfctr_nmi(unsigned int);
24extern void release_perfctr_nmi(unsigned int);
25extern int reserve_evntsel_nmi(unsigned int);
26extern void release_evntsel_nmi(unsigned int);
Glauber de Oliveira Costa6d60cd52008-03-19 14:25:36 -0300[diff] [blame]27
28extern void setup_apic_nmi_watchdog(void *);
29extern void stop_apic_nmi_watchdog(void *);
30extern void disable_timer_nmi_watchdog(void);
31extern void enable_timer_nmi_watchdog(void);
32extern int nmi_watchdog_tick(struct pt_regs *regs, unsigned reason);
Aristeu Rozanskib3e15bd2008-09-22 13:13:59 -0400[diff] [blame]33extern void cpu_nmi_set_wd_enabled(void);
Glauber de Oliveira Costa6d60cd52008-03-19 14:25:36 -0300[diff] [blame]34
35extern atomic_t nmi_active;
36extern unsigned int nmi_watchdog;
Glauber de Oliveira Costa6d60cd52008-03-19 14:25:36 -0300[diff] [blame]37#define NMI_NONE 0
38#define NMI_IO_APIC 1
39#define NMI_LOCAL_APIC 2
40#define NMI_INVALID 3
Glauber de Oliveira Costa6d60cd52008-03-19 14:25:36 -0300[diff] [blame]41
42struct ctl_table;
43struct file;
44extern int proc_nmi_enabled(struct ctl_table *, int , struct file *,
45 void __user *, size_t *, loff_t *);
46extern int unknown_nmi_panic;
47
Ingo Molnar47cab6a2009-08-03 09:31:54 +0200[diff] [blame]48void arch_trigger_all_cpu_backtrace(void);
49#define arch_trigger_all_cpu_backtrace arch_trigger_all_cpu_backtrace
Glauber de Oliveira Costa6d60cd52008-03-19 14:25:36 -0300[diff] [blame]50
Maciej W. Rozycki148b5082008-06-06 03:27:41 +0100[diff] [blame]51static inline void localise_nmi_watchdog(void)
52{
53 if (nmi_watchdog == NMI_IO_APIC)
54 nmi_watchdog = NMI_LOCAL_APIC;
55}
Cyrill Gorcunov4de00432008-06-24 22:52:06 +0200[diff] [blame]56
57/* check if nmi_watchdog is active (ie was specified at boot) */
58static inline int nmi_watchdog_active(void)
59{
60 /*
61 * actually it should be:
62 * return (nmi_watchdog == NMI_LOCAL_APIC ||
63 * nmi_watchdog == NMI_IO_APIC)
64 * but since they are power of two we could use a
65 * cheaper way --cvg
66 */
Cyrill Gorcunova4046f82009-06-07 12:19:37 +0400[diff] [blame]67 return nmi_watchdog & (NMI_LOCAL_APIC | NMI_IO_APIC);
Cyrill Gorcunov4de00432008-06-24 22:52:06 +0200[diff] [blame]68}
Glauber de Oliveira Costa6d60cd52008-03-19 14:25:36 -0300[diff] [blame]69#endif
70
71void lapic_watchdog_stop(void);
72int lapic_watchdog_init(unsigned nmi_hz);
73int lapic_wd_event(unsigned nmi_hz);
74unsigned lapic_adjust_nmi_hz(unsigned hz);
Glauber de Oliveira Costa6d60cd52008-03-19 14:25:36 -0300[diff] [blame]75void disable_lapic_nmi_watchdog(void);
76void enable_lapic_nmi_watchdog(void);
77void stop_nmi(void);
78void restart_nmi(void);
79
H. Peter Anvin1965aae2008-10-22 22:26:29 -0700[diff] [blame]80#endif /* _ASM_X86_NMI_H */