arch/mn10300/include/asm/timex.h

   1 /* MN10300 Architecture time management specifications
   2  *
   3  * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
   4  * Written by David Howells (dhowells@redhat.com)
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public Licence
   8  * as published by the Free Software Foundation; either version
   9  * 2 of the Licence, or (at your option) any later version.
  10  */
  11 #ifndef _ASM_TIMEX_H
  12 #define _ASM_TIMEX_H
  13
  14 #include <asm/hardirq.h>
  15 #include <unit/timex.h>
  16
  17 #define TICK_SIZE (tick_nsec / 1000)
  18
  19 #define CLOCK_TICK_RATE MN10300_JCCLK /* Underlying HZ */
  20
  21 #ifdef __KERNEL__
  22
  23 extern cycles_t cacheflush_time;
  24
  25 static inline cycles_t get_cycles(void)
  26 {
  27         return read_timestamp_counter();
  28 }
  29
  30 extern int init_clockevents(void);
  31 extern int init_clocksource(void);
  32
  33 static inline void setup_jiffies_interrupt(int irq,
  34                                            struct irqaction *action)
  35 {
  36         u16 tmp;
  37         setup_irq(irq, action);
  38         set_intr_level(irq, NUM2GxICR_LEVEL(CONFIG_TIMER_IRQ_LEVEL));
  39         GxICR(irq) |= GxICR_ENABLE | GxICR_DETECT | GxICR_REQUEST;
  40         tmp = GxICR(irq);
  41 }
  42
  43 #endif /* __KERNEL__ */
  44
  45 #endif /* _ASM_TIMEX_H */