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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1990, 1991 UNIX System Laboratories, Inc. */
/* Copyright (c) 1984, 1986, 1987, 1988, 1989, 1990 AT&T */
/* All Rights Reserved */
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/param.h>
#include <sys/time.h>
#include <sys/systm.h>
#include <sys/archsystm.h>
#include <sys/clock.h>
#include <sys/debug.h>
#include <sys/smp_impldefs.h>
#include <sys/rtc.h>
/*
* This file contains all generic part of clock and timer handling.
* Specifics are now in a seperate file and may be overridden by OEM
* modules which get loaded. Defaults come from i8254.c and hardclk.c
*/
unsigned int microdata = 50; /* loop count for 10 microsecond wait. */
/* MUST be initialized for those who */
/* insist on calling "tenmicrosec" before */
/* the clock has been initialized. */
timestruc_t (*todgetf)(void) = pc_tod_get;
void (*todsetf)(timestruc_t) = pc_tod_set;
long gmt_lag; /* offset in seconds of gmt to local time */
/*
* Write the specified time into the clock chip.
* Must be called with tod_lock held.
*/
void
tod_set(timestruc_t ts)
{
ASSERT(MUTEX_HELD(&tod_lock));
/*
* Prevent false alarm in tod_validate() due to tod value change.
*/
tod_fault_reset();
(*todsetf)(ts);
}
/*
* Read the current time from the clock chip and convert to UNIX form.
* Assumes that the year in the clock chip is valid.
* Must be called with tod_lock held.
*/
timestruc_t
tod_get(void)
{
timestruc_t ts;
ASSERT(MUTEX_HELD(&tod_lock));
ts = (*todgetf)();
ts.tv_sec = tod_validate(ts.tv_sec);
return (ts);
}
void
sgmtl(long arg)
{
gmt_lag = arg;
}
long
ggmtl(void)
{
return (gmt_lag);
}
/* rtcsync() - set 'time', assuming RTC and GMT lag are correct */
void
rtcsync(void)
{
timestruc_t ts;
mutex_enter(&tod_lock);
ts = (*todgetf)();
set_hrestime(&ts);
mutex_exit(&tod_lock);
}
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