hpet.h

   1 #ifndef __HPET__
   2 #define __HPET__ 1
   3
   4
   5
   6 struct hpet_info {
   7         unsigned long hi_ireqfreq;      /* Hz */
   8         unsigned long hi_flags; /* information */
   9         unsigned short hi_hpet;
  10         unsigned short hi_timer;
  11 };
  12
  13 #define HPET_INFO_PERIODIC      0x0001  /* timer is periodic */
  14
  15 #define HPET_IE_ON      _IO('h', 0x01)  /* interrupt on */
  16 #define HPET_IE_OFF     _IO('h', 0x02)  /* interrupt off */
  17 #define HPET_INFO       _IOR('h', 0x03, struct hpet_info)
  18 #define HPET_EPI        _IO('h', 0x04)  /* enable periodic */
  19 #define HPET_DPI        _IO('h', 0x05)  /* disable periodic */
  20 #define HPET_IRQFREQ    _IOW('h', 0x6, unsigned long)   /* IRQFREQ usec */
  21
  22 #endif                          /* !__HPET__ */