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__ */