clock.h revision 92761 
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 92761 2002-03-20 05:48:58Z alfred $
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	tsc_is_broken;
24extern int	wall_cmos_clock;
25#ifdef APIC_IO
26extern int	apic_8254_intr;
27#endif
28
29/*
30 * Driver to clock driver interface.
31 */
32struct clockframe;
33
34int	acquire_timer0(int rate, void (*function)(struct clockframe *frame));
35int	acquire_timer2(int mode);
36int	release_timer0(void);
37int	release_timer2(void);
38#ifndef PC98
39int	rtcin(int val);
40#else
41int	acquire_timer1(int mode);
42int	release_timer1(void);
43#endif
44int	sysbeep(int pitch, int period);
45void	timer_restore(void);
46
47#endif /* _KERNEL */
48
49#endif /* !_MACHINE_CLOCK_H_ */
50