freebsd-dev/sys/amd64/include/clock.h
2000-10-15 09:51:49 +00:00

51 lines
1.1 KiB
C

/*
* Kernel interface to machine-dependent clock driver.
* Garrett Wollman, September 1994.
* This file is in the public domain.
*
* $FreeBSD$
*/
#ifndef _MACHINE_CLOCK_H_
#define _MACHINE_CLOCK_H_
#ifdef _KERNEL
/*
* i386 to clock driver interface.
* XXX large parts of the driver and its interface are misplaced.
*/
extern int adjkerntz;
extern int disable_rtc_set;
extern int statclock_disable;
extern u_int timer_freq;
extern int timer0_max_count;
extern u_int tsc_freq;
extern int tsc_is_broken;
extern int wall_cmos_clock;
#ifdef APIC_IO
extern int apic_8254_intr;
#endif
/*
* Driver to clock driver interface.
*/
struct clockframe;
int acquire_timer0 __P((int rate,
void (*function)(struct clockframe *frame)));
int acquire_timer2 __P((int mode));
int release_timer0 __P((void));
int release_timer2 __P((void));
#ifndef PC98
int rtcin __P((int val));
#else
int acquire_timer1 __P((int mode));
int release_timer1 __P((void));
#endif
int sysbeep __P((int pitch, int period));
void i8254_restore __P((void));
#endif /* _KERNEL */
#endif /* !_MACHINE_CLOCK_H_ */