xref: /illumos-kvm-cmd/hpet.h (revision 68396ea9)
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