clock.h revision 191744
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 191744 2009-05-02 12:20:43Z 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 int statclock_disable; 19extern u_int i8254_freq; 20extern int i8254_max_count; 21extern uint64_t tsc_freq; 22extern int tsc_is_broken; 23extern int tsc_is_invariant; 24 25void i8254_init(void); 26 27struct trapframe; 28 29int hardclockintr(struct trapframe *frame); 30int statclockintr(struct trapframe *frame); 31int profclockintr(struct trapframe *frame); 32 33/* 34 * Driver to clock driver interface. 35 */ 36 37void startrtclock(void); 38void init_TSC(void); 39void init_TSC_tc(void); 40 41#define HAS_TIMER_SPKR 1 42int timer_spkr_acquire(void); 43int timer_spkr_release(void); 44void timer_spkr_setfreq(int freq); 45 46#endif /* _KERNEL */ 47 48#endif /* !_MACHINE_CLOCK_H_ */ 49