clock.h revision 166186 
1/*-
2 * Kernel interface to machine-dependent clock driver.
3 * Garrett Wollman, September 1994.
4 * This file is in the public domain.
5 *
6 * $FreeBSD: head/sys/amd64/include/clock.h 166186 2007-01-23 08:01:20Z bde $
7 */
8
9#ifndef _MACHINE_CLOCK_H_
10#define	_MACHINE_CLOCK_H_
11
12#ifdef _KERNEL
13/*
14 * i386 to clock driver interface.
15 * XXX large parts of the driver and its interface are misplaced.
16 */
17extern int	clkintr_pending;
18extern int	pscnt;
19extern int	psdiv;
20extern int	statclock_disable;
21extern u_int	timer_freq;
22extern int	timer0_max_count;
23extern uint64_t	tsc_freq;
24extern int	tsc_is_broken;
25
26void	i8254_init(void);
27
28/*
29 * Driver to clock driver interface.
30 */
31
32int	acquire_timer2(int mode);
33int	release_timer2(void);
34int	rtcin(int val);
35int	sysbeep(int pitch, int period);
36void	init_TSC(void);
37void	init_TSC_tc(void);
38
39#endif /* _KERNEL */
40
41#endif /* !_MACHINE_CLOCK_H_ */
42