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/*
* Kernel interface to machine-dependent clock driver.
* Garrett Wollman, September 1994.
* This file is in the public domain.
*
* $Id: clock.h,v 1.34 1998/03/05 21:45:42 tegge Exp $
*/
#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;
void DELAY __P((int usec));
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));
#endif /* KERNEL */
#endif /* !_MACHINE_CLOCK_H_ */
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