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/*- * Kernel interface to machine-dependent clock driver. * Garrett Wollman, September 1994. * This file is in the public domain. * * $FreeBSD: release/9.1.0/sys/amd64/include/clock.h 221703 2011-05-09 17:34:00Z jkim $ */ #ifndef _MACHINE_CLOCK_H_ #define _MACHINE_CLOCK_H_ #ifdef _KERNEL /* * i386 to clock driver interface. * XXX large parts of the driver and its interface are misplaced. */ extern int clkintr_pending; extern u_int i8254_freq; extern int i8254_max_count; extern uint64_t tsc_freq; extern int tsc_is_invariant; extern int tsc_perf_stat; void i8254_init(void); /* * Driver to clock driver interface. */ void startrtclock(void); void init_TSC(void); #define HAS_TIMER_SPKR 1 int timer_spkr_acquire(void); int timer_spkr_release(void); void timer_spkr_setfreq(int freq); #endif /* _KERNEL */ #endif /* !_MACHINE_CLOCK_H_ */