[linux-2.6-block.git] / arch / cris / kernel / time.c

/*
 *  linux/arch/cris/kernel/time.c
 *
 *  Copyright (C) 1991, 1992, 1995  Linus Torvalds
 *  Copyright (C) 1999, 2000, 2001 Axis Communications AB
 *
 * 1994-07-02    Alan Modra
 *	fixed set_rtc_mmss, fixed time.year for >= 2000, new mktime
 * 1995-03-26    Markus Kuhn
 *      fixed 500 ms bug at call to set_rtc_mmss, fixed DS12887
 *      precision CMOS clock update
 * 1996-05-03    Ingo Molnar
 *      fixed time warps in do_[slow|fast]_gettimeoffset()
 * 1997-09-10	Updated NTP code according to technical memorandum Jan '96
 *		"A Kernel Model for Precision Timekeeping" by Dave Mills
 *
 * Linux/CRIS specific code:
 *
 * Authors:    Bjorn Wesen
 *             Johan Adolfsson
 *
 */

#include <linux/errno.h>
#include <linux/module.h>
#include <linux/param.h>
#include <linux/jiffies.h>
#include <linux/bcd.h>
#include <linux/timex.h>
#include <linux/init.h>
#include <linux/profile.h>
#include <linux/sched.h>	/* just for sched_clock() - funny that */


#define D(x)

#define TICK_SIZE tick

extern unsigned long loops_per_jiffy; /* init/main.c */
unsigned long loops_per_usec;


#ifdef CONFIG_ARCH_USES_GETTIMEOFFSET
extern unsigned long do_slow_gettimeoffset(void);
static unsigned long (*do_gettimeoffset)(void) = do_slow_gettimeoffset;

u32 arch_gettimeoffset(void)
{
       return do_gettimeoffset() * 1000;
}
#endif

int set_rtc_mmss(unsigned long nowtime)
{
	D(printk(KERN_DEBUG "set_rtc_mmss(%lu)\n", nowtime));
	return 0;
}

/* grab the time from the RTC chip */
unsigned long get_cmos_time(void)
{
	return 0;
}


int update_persistent_clock(struct timespec now)
{
	return set_rtc_mmss(now.tv_sec);
}

void read_persistent_clock(struct timespec *ts)
{
	ts->tv_sec = 0;
	ts->tv_nsec = 0;
}


extern void cris_profile_sample(struct pt_regs* regs);

void
cris_do_profile(struct pt_regs* regs)
{

#ifdef CONFIG_SYSTEM_PROFILER
        cris_profile_sample(regs);
#endif

#ifdef CONFIG_PROFILING
	profile_tick(CPU_PROFILING);
#endif
}

unsigned long long sched_clock(void)
{
	return (unsigned long long)jiffies * (NSEC_PER_SEC / HZ) +
		get_ns_in_jiffie();
}

static int
__init init_udelay(void)
{
	loops_per_usec = (loops_per_jiffy * HZ) / 1000000;
	return 0;
}

__initcall(init_udelay);
Commit	Line	Data
daa00b9c	1	/*
1da177e4 LT	2	* linux/arch/cris/kernel/time.c
	3	*
	4	* Copyright (C) 1991, 1992, 1995 Linus Torvalds
	5	* Copyright (C) 1999, 2000, 2001 Axis Communications AB
	6	*
	7	* 1994-07-02 Alan Modra
	8	* fixed set_rtc_mmss, fixed time.year for >= 2000, new mktime
	9	* 1995-03-26 Markus Kuhn
	10	* fixed 500 ms bug at call to set_rtc_mmss, fixed DS12887
	11	* precision CMOS clock update
	12	* 1996-05-03 Ingo Molnar
	13	* fixed time warps in do_[slow\|fast]_gettimeoffset()
	14	* 1997-09-10 Updated NTP code according to technical memorandum Jan '96
	15	* "A Kernel Model for Precision Timekeeping" by Dave Mills
	16	*
	17	* Linux/CRIS specific code:
	18	*
	19	* Authors: Bjorn Wesen
daa00b9c	20	* Johan Adolfsson
1da177e4 LT	21	*
	22	*/
	23
1da177e4 LT	24	#include <linux/errno.h>
	25	#include <linux/module.h>
	26	#include <linux/param.h>
	27	#include <linux/jiffies.h>
	28	#include <linux/bcd.h>
	29	#include <linux/timex.h>
	30	#include <linux/init.h>
21783c97	31	#include <linux/profile.h>
4e57b681	32	#include <linux/sched.h> /* just for sched_clock() - funny that */
1da177e4	33
9c75fc8c JN	34
9c75fc8c JN	35	#define D(x)
1da177e4 LT	36
	37	#define TICK_SIZE tick
	38
1da177e4 LT	39	extern unsigned long loops_per_jiffy; /* init/main.c */
	40	unsigned long loops_per_usec;
	41
60dbd663 JN	42
60dbd663 JN	43	#ifdef CONFIG_ARCH_USES_GETTIMEOFFSET
1da177e4 LT	44	extern unsigned long do_slow_gettimeoffset(void);
	45	static unsigned long (*do_gettimeoffset)(void) = do_slow_gettimeoffset;
	46
ba875ba6	47	u32 arch_gettimeoffset(void)
1da177e4	48	{
60dbd663	49	return do_gettimeoffset() * 1000;
1da177e4	50	}
60dbd663	51	#endif
1da177e4	52
1da177e4 LT	53	int set_rtc_mmss(unsigned long nowtime)
1da177e4 LT	54	{
9c75fc8c JN	55	D(printk(KERN_DEBUG "set_rtc_mmss(%lu)\n", nowtime));
9c75fc8c JN	56	return 0;
1da177e4 LT	57	}
	58
	59	/* grab the time from the RTC chip */
9c75fc8c	60	unsigned long get_cmos_time(void)
1da177e4	61	{
9c75fc8c	62	return 0;
1da177e4 LT	63	}
1da177e4 LT	64
1da177e4	65
8eff8a5c	66	int update_persistent_clock(struct timespec now)
1da177e4	67	{
8eff8a5c	68	return set_rtc_mmss(now.tv_sec);
1da177e4 LT	69	}
1da177e4 LT	70
8eff8a5c JS	71	void read_persistent_clock(struct timespec *ts)
8eff8a5c JS	72	{
9c75fc8c	73	ts->tv_sec = 0;
8eff8a5c JS	74	ts->tv_nsec = 0;
	75	}
	76
	77
21783c97 MS	78	extern void cris_profile_sample(struct pt_regs* regs);
	79
	80	void
	81	cris_do_profile(struct pt_regs* regs)
	82	{
	83
0188e603	84	#ifdef CONFIG_SYSTEM_PROFILER
21783c97 MS	85	cris_profile_sample(regs);
	86	#endif
	87
0188e603	88	#ifdef CONFIG_PROFILING
c2610381	89	profile_tick(CPU_PROFILING);
21783c97 MS	90	#endif
	91	}
	92
daa00b9c JN	93	unsigned long long sched_clock(void)
daa00b9c JN	94	{
60dbd663	95	return (unsigned long long)jiffies * (NSEC_PER_SEC / HZ) +
daa00b9c JN	96	get_ns_in_jiffie();
	97	}
	98
1da177e4 LT	99	static int
	100	__init init_udelay(void)
	101	{
	102	loops_per_usec = (loops_per_jiffy * HZ) / 1000000;
	103	return 0;
	104	}
	105
	106	__initcall(init_udelay);