xref: /freebsd/sys/i386/include/clock.h (revision f856af0466c076beef4ea9b15d088e1119a945b8)
1 /*-
2  * Kernel interface to machine-dependent clock driver.
3  * Garrett Wollman, September 1994.
4  * This file is in the public domain.
5  *
6  * $FreeBSD$
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  */
17 extern int	clkintr_pending;
18 extern int	pscnt;
19 extern int	psdiv;
20 extern int	statclock_disable;
21 extern u_int	timer_freq;
22 extern int	timer0_max_count;
23 extern uint64_t	tsc_freq;
24 extern int	tsc_is_broken;
25 extern struct mtx clock_lock;
26 
27 /*
28  * Driver to clock driver interface.
29  */
30 
31 int	acquire_timer2(int mode);
32 int	release_timer2(void);
33 int	rtcin(int val);
34 int	sysbeep(int pitch, int period);
35 void	timer_restore(void);
36 void	init_TSC(void);
37 void	init_TSC_tc(void);
38 
39 #endif /* _KERNEL */
40 
41 #endif /* !_MACHINE_CLOCK_H_ */
42