2 * Kernel interface to machine-dependent clock driver.
3 * Garrett Wollman, September 1994.
4 * This file is in the public domain.
6 * $FreeBSD: src/sys/i386/include/clock.h,v 1.38.2.1 2002/11/02 04:41:50 iwasaki Exp $
7 * $DragonFly: src/sys/i386/include/Attic/clock.h,v 1.3 2003/08/03 11:51:25 hmp Exp $
10 #ifndef _MACHINE_CLOCK_H_
11 #define _MACHINE_CLOCK_H_
15 * i386 to clock driver interface.
16 * XXX large parts of the driver and its interface are misplaced.
19 extern int disable_rtc_set;
20 extern int statclock_disable;
21 extern u_int timer_freq;
22 extern int timer0_max_count;
23 extern u_int tsc_freq;
24 extern int tsc_is_broken;
25 extern int wall_cmos_clock;
27 extern int apic_8254_intr;
31 * Driver to clock driver interface.
35 int acquire_timer0 __P((int rate,
36 void (*function)(struct clockframe *frame)));
37 int acquire_timer2 __P((int mode));
38 int release_timer0 __P((void));
39 int release_timer2 __P((void));
41 int rtcin __P((int val));
43 int acquire_timer1 __P((int mode));
44 int release_timer1 __P((void));
46 int sysbeep __P((int pitch, int period));
47 void timer_restore __P((void));
51 #endif /* !_MACHINE_CLOCK_H_ */