include/asm-v850/highres_timer.h

   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
  34 extern void highres_timer_start (void), highres_timer_stop (void);
  35 extern void highres_timer_reset (void);
  36 extern void highres_timer_read_ticks (u32 *slow_ticks, u32 *fast_ticks);
  37 extern void highres_timer_ticks_to_timeval (u32 slow_ticks, u32 fast_ticks,
  38                                             struct timeval *tv);
  39 extern void highres_timer_read (struct timeval *tv);
  40
  41 #endif /* !__ASSEMBLY__ */
  42
  43
  44 #endif /* __V850_HIGHRES_TIMER_H__ */