hpet.h 680 B

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  1. #ifndef __HPET__
  2. #define __HPET__
  3. struct hpet_info {
  4. unsigned long hi_ireqfreq; /* Hz */
  5. unsigned long hi_flags; /* information */
  6. unsigned short hi_hpet;
  7. unsigned short hi_timer;
  8. };
  9. #define HPET_INFO_PERIODIC 0x0010 /* periodic-capable comparator */
  10. #define HPET_IE_ON _IO('h', 0x01) /* interrupt on */
  11. #define HPET_IE_OFF _IO('h', 0x02) /* interrupt off */
  12. #define HPET_INFO _IOR('h', 0x03, struct hpet_info)
  13. #define HPET_EPI _IO('h', 0x04) /* enable periodic */
  14. #define HPET_DPI _IO('h', 0x05) /* disable periodic */
  15. #define HPET_IRQFREQ _IOW('h', 0x6, unsigned long) /* IRQFREQ usec */
  16. #define MAX_HPET_TBS 8 /* maximum hpet timer blocks */
  17. #endif /* __HPET__ */