clock.h revision 33809 
1/*
2 * Kernel interface to machine-dependent clock driver.
3 * Garrett Wollman, September 1994.
4 * This file is in the public domain.
5 *
6 *	$Id: clock.h,v 1.32 1998/02/20 16:35:27 phk Exp $
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	adjkerntz;
18extern int	disable_rtc_set;
19extern int	statclock_disable;
20extern u_int	timer_freq;
21extern int	timer0_max_count;
22extern u_int	tsc_freq;
23extern int	wall_cmos_clock;
24
25/*
26 * Driver to clock driver interface.
27 */
28struct clockframe;
29
30void	DELAY __P((int usec));
31int	acquire_timer0 __P((int rate,
32			    void (*function)(struct clockframe *frame)));
33int	acquire_timer2 __P((int mode));
34int	release_timer0 __P((void));
35int	release_timer2 __P((void));
36#ifndef PC98
37int	rtcin __P((int val));
38#else
39int	acquire_timer1 __P((int mode));
40int	release_timer1 __P((void));
41#endif
42int	sysbeep __P((int pitch, int period));
43
44#endif /* KERNEL */
45
46#endif /* !_MACHINE_CLOCK_H_ */
47