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77ef50a5 VN |
1 | #ifndef ASM_X86__NMI_H |
2 | #define ASM_X86__NMI_H | |
6d60cd53 GOC |
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 | */ | |
16 | int do_nmi_callback(struct pt_regs *regs, int cpu); | |
17 | ||
6d60cd53 GOC |
18 | #ifdef CONFIG_X86_64 |
19 | extern void default_do_nmi(struct pt_regs *); | |
6d60cd53 GOC |
20 | #endif |
21 | ||
ddca03c9 | 22 | extern void die_nmi(char *str, struct pt_regs *regs, int do_panic); |
6d60cd53 GOC |
23 | extern int check_nmi_watchdog(void); |
24 | extern int nmi_watchdog_enabled; | |
6d60cd53 GOC |
25 | extern int avail_to_resrv_perfctr_nmi_bit(unsigned int); |
26 | extern int avail_to_resrv_perfctr_nmi(unsigned int); | |
27 | extern int reserve_perfctr_nmi(unsigned int); | |
28 | extern void release_perfctr_nmi(unsigned int); | |
29 | extern int reserve_evntsel_nmi(unsigned int); | |
30 | extern void release_evntsel_nmi(unsigned int); | |
6d60cd53 GOC |
31 | |
32 | extern void setup_apic_nmi_watchdog(void *); | |
33 | extern void stop_apic_nmi_watchdog(void *); | |
34 | extern void disable_timer_nmi_watchdog(void); | |
35 | extern void enable_timer_nmi_watchdog(void); | |
36 | extern int nmi_watchdog_tick(struct pt_regs *regs, unsigned reason); | |
b3e15bde | 37 | extern void cpu_nmi_set_wd_enabled(void); |
6d60cd53 GOC |
38 | |
39 | extern atomic_t nmi_active; | |
40 | extern unsigned int nmi_watchdog; | |
6d60cd53 GOC |
41 | #define NMI_NONE 0 |
42 | #define NMI_IO_APIC 1 | |
43 | #define NMI_LOCAL_APIC 2 | |
44 | #define NMI_INVALID 3 | |
6d60cd53 GOC |
45 | |
46 | struct ctl_table; | |
47 | struct file; | |
48 | extern int proc_nmi_enabled(struct ctl_table *, int , struct file *, | |
49 | void __user *, size_t *, loff_t *); | |
50 | extern int unknown_nmi_panic; | |
51 | ||
52 | void __trigger_all_cpu_backtrace(void); | |
53 | #define trigger_all_cpu_backtrace() __trigger_all_cpu_backtrace() | |
54 | ||
148b5083 MR |
55 | static inline void localise_nmi_watchdog(void) |
56 | { | |
57 | if (nmi_watchdog == NMI_IO_APIC) | |
58 | nmi_watchdog = NMI_LOCAL_APIC; | |
59 | } | |
4de00436 CG |
60 | |
61 | /* check if nmi_watchdog is active (ie was specified at boot) */ | |
62 | static inline int nmi_watchdog_active(void) | |
63 | { | |
64 | /* | |
65 | * actually it should be: | |
66 | * return (nmi_watchdog == NMI_LOCAL_APIC || | |
67 | * nmi_watchdog == NMI_IO_APIC) | |
68 | * but since they are power of two we could use a | |
69 | * cheaper way --cvg | |
70 | */ | |
71 | return nmi_watchdog & 0x3; | |
72 | } | |
6d60cd53 GOC |
73 | #endif |
74 | ||
75 | void lapic_watchdog_stop(void); | |
76 | int lapic_watchdog_init(unsigned nmi_hz); | |
77 | int lapic_wd_event(unsigned nmi_hz); | |
78 | unsigned lapic_adjust_nmi_hz(unsigned hz); | |
79 | int lapic_watchdog_ok(void); | |
80 | void disable_lapic_nmi_watchdog(void); | |
81 | void enable_lapic_nmi_watchdog(void); | |
82 | void stop_nmi(void); | |
83 | void restart_nmi(void); | |
84 | ||
77ef50a5 | 85 | #endif /* ASM_X86__NMI_H */ |