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/platform/pc32/include/clock.h,v 1.4 2003/08/26 21:42:18 rob 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 (int rate,
36 void (*function)(struct clockframe *frame));
37 int acquire_timer2 (int mode);
38 int release_timer0 (void);
39 int release_timer2 (void);
43 int acquire_timer1 (int mode);
44 int release_timer1 (void);
46 int sysbeep (int pitch, int period);
47 void timer_restore (void);
51 #endif /* !_MACHINE_CLOCK_H_ */