clock.h revision 52669
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 52669 1999-10-30 14:56:01Z iwasaki $ 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 34void DELAY __P((int usec)); 35int acquire_timer0 __P((int rate, 36 void (*function)(struct clockframe *frame))); 37int acquire_timer2 __P((int mode)); 38int release_timer0 __P((void)); 39int release_timer2 __P((void)); 40#ifndef PC98 41int rtcin __P((int val)); 42#else 43int acquire_timer1 __P((int mode)); 44int release_timer1 __P((void)); 45#endif 46int sysbeep __P((int pitch, int period)); 47void i8254_restore __P((void)); 48 49#endif /* KERNEL */ 50 51#endif /* !_MACHINE_CLOCK_H_ */ 52