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/* $OpenBSD: power.c,v 1.6 2002/03/14 01:26:43 millert Exp $ */
/* $NetBSD: power.c,v 1.2 1996/05/16 15:56:56 abrown Exp $ */
/*
* Copyright (c) 1996
* The President and Fellows of Harvard College. All rights reserved.
*
* All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Aaron Brown and
* Harvard University.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Harvard University
* and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#include <sys/param.h>
#include <sys/device.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <machine/autoconf.h>
#include <sparc/dev/power.h>
static int powermatch(struct device *, void *, void *);
static void powerattach(struct device *, struct device *, void *);
struct cfattach power_ca = {
sizeof(struct device), powermatch, powerattach
};
struct cfdriver power_cd = {
NULL, "power", DV_DULL
};
static char power_attached = 0;
/*
* This is the driver for the "power" register available on some Sun4m
* machines. This allows the machine to remove power automatically when
* shutdown or halted or whatever.
*/
static int
powermatch(parent, vcf, aux)
struct device *parent;
void *aux, *vcf;
{
register struct confargs *ca = aux;
if (CPU_ISSUN4M)
return (strcmp("power", ca->ca_ra.ra_name) == 0);
return (0);
}
/* ARGSUSED */
static void
powerattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct confargs *ca = aux;
struct romaux *ra = &ca->ca_ra;
power_reg = mapdev(ra->ra_reg, 0, 0, sizeof(long));
power_attached = 1;
printf("\n");
}
void
powerdown()
{
if (power_attached)
*POWER_REG |= POWER_OFF;
DELAY(1000000);
}
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