clock.h revision 34058
1/* 2 * Kernel interface to machine-dependent clock driver. 3 * Garrett Wollman, September 1994. 4 * This file is in the public domain. 5 * 6 * $Id: clock.h,v 1.33 1998/02/25 02:20:30 bde Exp $ 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 wall_cmos_clock; 24#ifdef APIC_IO 25extern int apic_8254_intr; 26#endif 27 28/* 29 * Driver to clock driver interface. 30 */ 31struct clockframe; 32 33void DELAY __P((int usec)); 34int acquire_timer0 __P((int rate, 35 void (*function)(struct clockframe *frame))); 36int acquire_timer2 __P((int mode)); 37int release_timer0 __P((void)); 38int release_timer2 __P((void)); 39#ifndef PC98 40int rtcin __P((int val)); 41#else 42int acquire_timer1 __P((int mode)); 43int release_timer1 __P((void)); 44#endif 45int sysbeep __P((int pitch, int period)); 46 47#endif /* KERNEL */ 48 49#endif /* !_MACHINE_CLOCK_H_ */ 50