#ifndef _ASM_X86_NMI_H
#define _ASM_X86_NMI_H
#include <linux/pm.h>
#include <asm/irq.h>
#include <asm/io.h>
#ifdef CONFIG_X86_LOCAL_APIC
/**
* do_nmi_callback
*
* Check to see if a callback exists and execute it. Return 1
* if the handler exists and was handled successfully.
*/
int do_nmi_callback(struct pt_regs *regs, int cpu);
extern void die_nmi(char *str, struct pt_regs *regs, int do_panic);
extern int check_nmi_watchdog(void);
#if !defined(CONFIG_LOCKUP_DETECTOR)
extern int nmi_watchdog_enabled;
#endif
extern int avail_to_resrv_perfctr_nmi_bit(unsigned int);
extern int avail_to_resrv_perfctr_nmi(unsigned int);
extern int reserve_perfctr_nmi(unsigned int);
extern void release_perfctr_nmi(unsigned int);
extern int reserve_evntsel_nmi(unsigned int);
extern void release_evntsel_nmi(unsigned int);
extern void setup_apic_nmi_watchdog(void *);
extern void stop_apic_nmi_watchdog(void *);
extern void disable_timer_nmi_watchdog(void);
extern void enable_timer_nmi_watchdog(void);
extern int nmi_watchdog_tick(struct pt_regs *regs, unsigned reason);
extern void cpu_nmi_set_wd_enabled(void);
extern atomic_t nmi_active;
extern unsigned int nmi_watchdog;
#define NMI_DEFAULT -1
#define NMI_NONE 0
#define NMI_IO_APIC 1
#define NMI_LOCAL_APIC 2
#define NMI_INVALID 3
struct ctl_table;
extern int proc_nmi_enabled(struct ctl_table *, int ,
void __user *, size_t *, loff_t *);
extern int unknown_nmi_panic;
extern void nmi_watchdog_default(void);
void arch_trigger_all_cpu_backtrace(bool);
#define arch_trigger_all_cpu_backtrace arch_trigger_all_cpu_backtrace
/*
* Define some priorities for the nmi notifier call chain.
*
* Create a local nmi bit that has a higher priority than
* external nmis, because the local ones are more frequent.
*
* Also setup some default high/normal/low settings for
* subsystems to registers with. Using 4 bits to seperate
* the priorities. This can go alot higher if needed be.
*/
#define NMI_LOCAL_SHIFT 16 /* randomly picked */
#define NMI_LOCAL_BIT (1ULL << NMI_LOCAL_SHIFT)
#define NMI_HIGH_PRIOR (1ULL << 8)
#define NMI_NORMAL_PRIOR (1ULL << 4)
#define NMI_LOW_PRIOR (1ULL << 0)
#define NMI_LOCAL_HIGH_PRIOR (NMI_LOCAL_BIT | NMI_HIGH_PRIOR)
#define NMI_LOCAL_NORMAL_PRIOR (NMI_LOCAL_BIT | NMI_NORMAL_PRIOR)
#define NMI_LOCAL_LOW_PRIOR (NMI_LOCAL_BIT | NMI_LOW_PRIOR)
static inline void localise_nmi_watchdog(void)
{
if (nmi_watchdog == NMI_IO_APIC)
nmi_watchdog = NMI_LOCAL_APIC;
}
/* check if nmi_watchdog is active (ie was specified at boot) */
static inline int nmi_watchdog_active(void)
{
/*
* actually it should be:
* return (nmi_watchdog == NMI_LOCAL_APIC ||
* nmi_watchdog == NMI_IO_APIC)
* but since they are power of two we could use a
* cheaper way --cvg
*/
return nmi_watchdog & (NMI_LOCAL_APIC | NMI_IO_APIC);
}
#endif
void lapic_watchdog_stop(void);
int lapic_watchdog_init(unsigned nmi_hz);
int lapic_wd_event(unsigned nmi_hz);
unsigned lapic_adjust_nmi_hz(unsigned hz);
void disable_lapic_nmi_watchdog(void);
void enable_lapic_nmi_watchdog(void);
void stop_nmi(void);
void restart_nmi(void);
#endif /* _ASM_X86_NMI_H */
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