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__ */ 23