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_ */ 46