clock.h revision 34058 
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 1.33 1998/02/25 02:20:30 bde 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#ifdef APIC_IO
25extern int	apic_8254_intr;
26#endif
27
28/*
29 * Driver to clock driver interface.
30 */
31struct clockframe;
32
33void	DELAY __P((int usec));
34int	acquire_timer0 __P((int rate,
35			    void (*function)(struct clockframe *frame)));
36int	acquire_timer2 __P((int mode));
37int	release_timer0 __P((void));
38int	release_timer2 __P((void));
39#ifndef PC98
40int	rtcin __P((int val));
41#else
42int	acquire_timer1 __P((int mode));
43int	release_timer1 __P((void));
44#endif
45int	sysbeep __P((int pitch, int period));
46
47#endif /* KERNEL */
48
49#endif /* !_MACHINE_CLOCK_H_ */
50