1. 根目录:
2. arch
3. mn10300
4. include
5. asm
6. timex.h

/* MN10300 Architecture time management specifications
 *
 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells (dhowells@redhat.com)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public Licence
 * as published by the Free Software Foundation; either version
 * 2 of the Licence, or (at your option) any later version.
 */
#ifndef _ASM_TIMEX_H
#define _ASM_TIMEX_H

#include <asm/hardirq.h>
#include <unit/timex.h>

#define TICK_SIZE (tick_nsec / 1000)

#define CLOCK_TICK_RATE MN10300_JCCLK /* Underlying HZ */

#ifdef __KERNEL__

extern cycles_t cacheflush_time;

static inline cycles_t get_cycles(void)
{
	return read_timestamp_counter();
}

extern int init_clockevents(void);
extern int init_clocksource(void);

static inline void setup_jiffies_interrupt(int irq,
					   struct irqaction *action)
{
	u16 tmp;
	setup_irq(irq, action);
	set_intr_level(irq, NUM2GxICR_LEVEL(CONFIG_TIMER_IRQ_LEVEL));
	GxICR(irq) |= GxICR_ENABLE | GxICR_DETECT | GxICR_REQUEST;
	tmp = GxICR(irq);
}

#endif /* __KERNEL__ */

#endif /* _ASM_TIMEX_H */