include/asm-x86/nmi_64.h

   1 #ifndef ASM_NMI_H
   2 #define ASM_NMI_H
   3
   4 #include <linux/pm.h>
   5 #include <asm/io.h>
   6
   7 /**
   8  * do_nmi_callback
   9  *
  10  * Check to see if a callback exists and execute it.  Return 1
  11  * if the handler exists and was handled successfully.
  12  */
  13 int do_nmi_callback(struct pt_regs *regs, int cpu);
  14
  15 #ifdef CONFIG_PM
  16
  17 /** Replace the PM callback routine for NMI. */
  18 struct pm_dev * set_nmi_pm_callback(pm_callback callback);
  19
  20 /** Unset the PM callback routine back to the default. */
  21 void unset_nmi_pm_callback(struct pm_dev * dev);
  22
  23 #else
  24
  25 static inline struct pm_dev * set_nmi_pm_callback(pm_callback callback)
  26 {
  27         return 0;
  28 }
  29
  30 static inline void unset_nmi_pm_callback(struct pm_dev * dev)
  31 {
  32 }
  33
  34 #endif /* CONFIG_PM */
  35
  36 extern void default_do_nmi(struct pt_regs *);
  37 extern void die_nmi(char *str, struct pt_regs *regs, int do_panic);
  38
  39 #define get_nmi_reason() inb(0x61)
  40
  41 extern int unknown_nmi_panic;
  42 extern int nmi_watchdog_enabled;
  43
  44 extern int check_nmi_watchdog(void);
  45 extern int avail_to_resrv_perfctr_nmi_bit(unsigned int);
  46 extern int avail_to_resrv_perfctr_nmi(unsigned int);
  47 extern int reserve_perfctr_nmi(unsigned int);
  48 extern void release_perfctr_nmi(unsigned int);
  49 extern int reserve_evntsel_nmi(unsigned int);
  50 extern void release_evntsel_nmi(unsigned int);
  51
  52 extern void setup_apic_nmi_watchdog (void *);
  53 extern void stop_apic_nmi_watchdog (void *);
  54 extern void disable_timer_nmi_watchdog(void);
  55 extern void enable_timer_nmi_watchdog(void);
  56 extern int nmi_watchdog_tick (struct pt_regs * regs, unsigned reason);
  57
  58 extern void nmi_watchdog_default(void);
  59
  60 extern atomic_t nmi_active;
  61 extern unsigned int nmi_watchdog;
  62 #define NMI_DISABLED    -1
  63 #define NMI_NONE        0
  64 #define NMI_IO_APIC     1
  65 #define NMI_LOCAL_APIC  2
  66 #define NMI_INVALID     3
  67 #define NMI_DEFAULT     NMI_DISABLED
  68
  69 struct ctl_table;
  70 struct file;
  71 extern int proc_nmi_enabled(struct ctl_table *, int , struct file *,
  72                         void __user *, size_t *, loff_t *);
  73
  74 extern int unknown_nmi_panic;
  75
  76 void __trigger_all_cpu_backtrace(void);
  77 #define trigger_all_cpu_backtrace() __trigger_all_cpu_backtrace()
  78
  79
  80 void lapic_watchdog_stop(void);
  81 int lapic_watchdog_init(unsigned nmi_hz);
  82 int lapic_wd_event(unsigned nmi_hz);
  83 unsigned lapic_adjust_nmi_hz(unsigned hz);
  84 int lapic_watchdog_ok(void);
  85 void disable_lapic_nmi_watchdog(void);
  86 void enable_lapic_nmi_watchdog(void);
  87 void stop_nmi(void);
  88 void restart_nmi(void);
  89
  90 #endif /* ASM_NMI_H */