1*53ee8cc1Swenshuai.xi #ifndef __HPET__ 2*53ee8cc1Swenshuai.xi #define __HPET__ 1 3*53ee8cc1Swenshuai.xi 4*53ee8cc1Swenshuai.xi 5*53ee8cc1Swenshuai.xi 6*53ee8cc1Swenshuai.xi struct hpet_info { 7*53ee8cc1Swenshuai.xi unsigned long hi_ireqfreq; /* Hz */ 8*53ee8cc1Swenshuai.xi unsigned long hi_flags; /* information */ 9*53ee8cc1Swenshuai.xi unsigned short hi_hpet; 10*53ee8cc1Swenshuai.xi unsigned short hi_timer; 11*53ee8cc1Swenshuai.xi }; 12*53ee8cc1Swenshuai.xi 13*53ee8cc1Swenshuai.xi #define HPET_INFO_PERIODIC 0x0001 /* timer is periodic */ 14*53ee8cc1Swenshuai.xi 15*53ee8cc1Swenshuai.xi #define HPET_IE_ON _IO('h', 0x01) /* interrupt on */ 16*53ee8cc1Swenshuai.xi #define HPET_IE_OFF _IO('h', 0x02) /* interrupt off */ 17*53ee8cc1Swenshuai.xi #define HPET_INFO _IOR('h', 0x03, struct hpet_info) 18*53ee8cc1Swenshuai.xi #define HPET_EPI _IO('h', 0x04) /* enable periodic */ 19*53ee8cc1Swenshuai.xi #define HPET_DPI _IO('h', 0x05) /* disable periodic */ 20*53ee8cc1Swenshuai.xi #define HPET_IRQFREQ _IOW('h', 0x6, unsigned long) /* IRQFREQ usec */ 21*53ee8cc1Swenshuai.xi 22*53ee8cc1Swenshuai.xi #endif /* !__HPET__ */ 23