clock.h revision 172998
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 172998 2007-10-26 03:23:54Z peter $ 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 clkintr_pending; 18extern int pscnt; 19extern int psdiv; 20extern int statclock_disable; 21extern u_int timer_freq; 22extern int timer0_max_count; 23extern uint64_t tsc_freq; 24extern int tsc_is_broken; 25 26void i8254_init(void); 27 28/* 29 * Driver to clock driver interface. 30 */ 31 32int acquire_timer2(int mode); 33int release_timer2(void); 34int rtcin(int reg); 35void writertc(int reg, unsigned char val); 36int sysbeep(int pitch, int period); 37void init_TSC(void); 38void init_TSC_tc(void); 39 40#endif /* _KERNEL */ 41 42#endif /* !_MACHINE_CLOCK_H_ */ 43