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 u_int i8254_freq;
19 extern int i8254_max_count;
20 extern uint64_t tsc_freq;
21 extern int tsc_is_invariant;
22 extern int tsc_perf_stat;
23 #ifdef SMP
24 extern int smp_tsc;
25 #endif
26
27 void i8254_init(void);
28 void i8254_delay(int);
29 void clock_init(void);
30 void lapic_calibrate(void);
31 void tsc_init(void);
32 void tsc_calibrate(void);
33
34 /*
35 * Driver to clock driver interface.
36 */
37
38 void startrtclock(void);
39 void start_TSC(void);
40 void resume_TSC(void);
41
42 #define HAS_TIMER_SPKR 1
43 int timer_spkr_acquire(void);
44 int timer_spkr_release(void);
45 void timer_spkr_setfreq(int freq);
46
47 #endif /* _KERNEL */
48
49 #endif /* !_MACHINE_CLOCK_H_ */
Cache object: e1d36939aa78c939e77060d03cca6bb9
|