1 /*
2 * Garrett Wollman, September 1994.
3 * This file is in the public domain.
4 * Kernel interface to machine-dependent clock driver.
5 *
6 * JNPR: clock.h,v 1.6.2.1 2007/08/29 09:36:05 girish
7 * from: src/sys/alpha/include/clock.h,v 1.5 1999/12/29 04:27:55 peter
8 * $FreeBSD$
9 */
10
11 #ifndef _MACHINE_CLOCK_H_
12 #define _MACHINE_CLOCK_H_
13
14 #include <sys/bus.h>
15
16 #ifdef _KERNEL
17
18 extern int cpu_clock;
19
20 #define wall_cmos_clock 0
21 #define adjkerntz 0
22
23 /*
24 * Default is to assume a CPU pipeline clock of 100Mhz, and
25 * that CP0_COUNT increments every 2 cycles.
26 */
27 #define MIPS_DEFAULT_HZ (100 * 1000 * 1000)
28
29 void mips_timer_early_init(uint64_t clock_hz);
30 void mips_timer_init_params(uint64_t, int);
31
32 extern uint64_t counter_freq;
33 extern int clocks_running;
34
35 /*
36 * The 'platform_timecounter' pointer may be used to register a
37 * platform-specific timecounter.
38 *
39 * A default timecounter based on the CP0 COUNT register is always registered.
40 */
41 extern struct timecounter *platform_timecounter;
42
43 #endif
44
45 #endif /* !_MACHINE_CLOCK_H_ */
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