arch/x86/include/asm/nmi.h

   1 #ifndef _ASM_X86_NMI_H
   2 #define _ASM_X86_NMI_H
   3
   4 #include <linux/pm.h>
   5 #include <asm/irq.h>
   6 #include <asm/io.h>
   7
   8 #ifdef CONFIG_X86_LOCAL_APIC
   9
  10 extern int avail_to_resrv_perfctr_nmi_bit(unsigned int);
  11 extern int reserve_perfctr_nmi(unsigned int);
  12 extern void release_perfctr_nmi(unsigned int);
  13 extern int reserve_evntsel_nmi(unsigned int);
  14 extern void release_evntsel_nmi(unsigned int);
  15
  16 struct ctl_table;
  17 extern int proc_nmi_enabled(struct ctl_table *, int ,
  18                         void __user *, size_t *, loff_t *);
  19 extern int unknown_nmi_panic;
  20
  21 #endif /* CONFIG_X86_LOCAL_APIC */
  22
  23 #define NMI_FLAG_FIRST  1
  24
  25 enum {
  26         NMI_LOCAL=0,
  27         NMI_UNKNOWN,
  28         NMI_SERR,
  29         NMI_IO_CHECK,
  30         NMI_MAX
  31 };
  32
  33 #define NMI_DONE        0
  34 #define NMI_HANDLED     1
  35
  36 typedef int (*nmi_handler_t)(unsigned int, struct pt_regs *);
  37
  38 struct nmiaction {
  39         struct list_head        list;
  40         nmi_handler_t           handler;
  41         unsigned long           flags;
  42         const char              *name;
  43 };
  44
  45 #define register_nmi_handler(t, fn, fg, n, init...)     \
  46 ({                                                      \
  47         static struct nmiaction init fn##_na = {        \
  48                 .handler = (fn),                        \
  49                 .name = (n),                            \
  50                 .flags = (fg),                          \
  51         };                                              \
  52         __register_nmi_handler((t), &fn##_na);          \
  53 })
  54
  55 int __register_nmi_handler(unsigned int, struct nmiaction *);
  56
  57 void unregister_nmi_handler(unsigned int, const char *);
  58
  59 void stop_nmi(void);
  60 void restart_nmi(void);
  61 void local_touch_nmi(void);
  62
  63 #endif /* _ASM_X86_NMI_H */