clock.h revision 210131
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 210131 2010-07-15 17:49:35Z mav $ 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 u_int i8254_freq; 19extern int i8254_max_count; 20extern uint64_t tsc_freq; 21extern int tsc_is_broken; 22extern int tsc_is_invariant; 23 24void i8254_init(void); 25 26/* 27 * Driver to clock driver interface. 28 */ 29 30void startrtclock(void); 31void init_TSC(void); 32void init_TSC_tc(void); 33 34#define HAS_TIMER_SPKR 1 35int timer_spkr_acquire(void); 36int timer_spkr_release(void); 37void timer_spkr_setfreq(int freq); 38 39#endif /* _KERNEL */ 40 41#endif /* !_MACHINE_CLOCK_H_ */ 42