113 lines
3.6 KiB
C
113 lines
3.6 KiB
C
/* $NetBSD: power.c,v 1.15 2002/10/02 16:02:16 thorpej 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 __P((struct device *, struct cfdata *, void *));
|
|
static void powerattach __P((struct device *, struct device *, void *));
|
|
|
|
CFATTACH_DECL(power, sizeof(struct device),
|
|
powermatch, powerattach, NULL, NULL);
|
|
|
|
/*
|
|
* 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, cf, aux)
|
|
struct device *parent;
|
|
struct cfdata *cf;
|
|
void *aux;
|
|
{
|
|
union obio_attach_args *uoba = aux;
|
|
struct sbus_attach_args *sa = &uoba->uoba_sbus;
|
|
|
|
if (uoba->uoba_isobio4 != 0)
|
|
return (0);
|
|
|
|
return (strcmp("power", sa->sa_name) == 0);
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
static void
|
|
powerattach(parent, self, aux)
|
|
struct device *parent, *self;
|
|
void *aux;
|
|
{
|
|
union obio_attach_args *uoba = aux;
|
|
struct sbus_attach_args *sa = &uoba->uoba_sbus;
|
|
bus_space_handle_t bh;
|
|
|
|
/* Map the power configuration register. */
|
|
if (sbus_bus_map(sa->sa_bustag,
|
|
sa->sa_slot, sa->sa_offset, sizeof(u_int8_t),
|
|
BUS_SPACE_MAP_LINEAR, &bh) != 0) {
|
|
printf("%s: cannot map register\n", self->dv_xname);
|
|
return;
|
|
}
|
|
power_reg = (volatile u_int8_t *)bh;
|
|
|
|
printf("\n");
|
|
}
|
|
|
|
void
|
|
powerdown()
|
|
{
|
|
/* Only try if the power node was attached. */
|
|
if (power_reg != NULL)
|
|
*POWER_REG |= POWER_OFF;
|
|
|
|
/*
|
|
* don't return too quickly; the PROMs on some sparcs
|
|
* report the powerdown as failed if we do.
|
|
*/
|
|
DELAY(1000000);
|
|
}
|