1#ifndef __HPET__ 2#define __HPET__ 1 3 4 5 6 7struct hpet_info { 8 unsigned long hi_ireqfreq; /* Hz */ 9 unsigned long hi_flags; /* information */ 10 unsigned short hi_hpet; 11 unsigned short hi_timer; 12}; 13 14#define HPET_INFO_PERIODIC 0x0010 /* periodic-capable comparator */ 15 16#define HPET_IE_ON _IO('h', 0x01) /* interrupt on */ 17#define HPET_IE_OFF _IO('h', 0x02) /* interrupt off */ 18#define HPET_INFO _IOR('h', 0x03, struct hpet_info) 19#define HPET_EPI _IO('h', 0x04) /* enable periodic */ 20#define HPET_DPI _IO('h', 0x05) /* disable periodic */ 21#define HPET_IRQFREQ _IOW('h', 0x6, unsigned long) /* IRQFREQ usec */ 22 23#define MAX_HPET_TBS 8 /* maximum hpet timer blocks */ 24 25#endif /* !__HPET__ */ 26