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
26 void i8254_init(void);
27
28 /*
29 * Driver to clock driver interface.
30 */
31
32 int acquire_timer2(int mode);
33 int release_timer2(void);
34 int rtcin(int reg);
35 void writertc(int reg, unsigned char val);
36 int sysbeep(int pitch, int period);
37 void timer_restore(void);
38 void init_TSC(void);
39 void init_TSC_tc(void);
40
41 #endif /* _KERNEL */
42
43 #endif /* !_MACHINE_CLOCK_H_ */
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