1/* 2 * include/asm-v850/highres_timer.h -- High resolution timing routines 3 * 4 * Copyright (C) 2001,03 NEC Electronics Corporation 5 * Copyright (C) 2001,03 Miles Bader <miles@gnu.org> 6 * 7 * This file is subject to the terms and conditions of the GNU General 8 * Public License. See the file COPYING in the main directory of this 9 * archive for more details. 10 * 11 * Written by Miles Bader <miles@gnu.org> 12 */ 13 14#ifndef __V850_HIGHRES_TIMER_H__ 15#define __V850_HIGHRES_TIMER_H__ 16 17#ifndef __ASSEMBLY__ 18#include <linux/time.h> 19#endif 20 21#include <asm/entry.h> 22 23 24/* Frequency of the `slow ticks' (one tick each time the fast-tick 25 counter overflows). */ 26#define HIGHRES_TIMER_SLOW_TICK_RATE 25 27 28/* Which timer in the V850E `Timer D' we use. */ 29#define HIGHRES_TIMER_TIMER_D_UNIT 3 30 31 32#ifndef __ASSEMBLY__ 33 34extern void highres_timer_start (void), highres_timer_stop (void); 35extern void highres_timer_reset (void); 36extern void highres_timer_read_ticks (u32 *slow_ticks, u32 *fast_ticks); 37extern void highres_timer_ticks_to_timeval (u32 slow_ticks, u32 fast_ticks, 38 struct timeval *tv); 39extern void highres_timer_read (struct timeval *tv); 40 41#endif /* !__ASSEMBLY__ */ 42 43 44#endif /* __V850_HIGHRES_TIMER_H__ */ 45