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/* $OpenBSD: power.c,v 1.14 2011/06/24 19:47:49 naddy Exp $ */
/*
* Copyright (c) 2007 Jasper Lievisse Adriaanse <jasper@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/proc.h>
#include <sys/signalvar.h>
#include <machine/autoconf.h>
#include <mips64/archtype.h>
#include <dev/ic/ds1687reg.h>
#include <sgi/dev/dsrtcvar.h>
#include "power.h"
/*
* Power button driver for the SGI O2 and Octane.
*/
int power_intr(void *);
struct cfdriver power_cd = {
NULL, "power", DV_DULL
};
#if NPOWER_MACEBUS > 0
#include <sgi/localbus/macebusvar.h>
void power_macebus_attach(struct device *, struct device *, void *);
int power_macebus_match(struct device *, void *, void *);
struct cfattach power_macebus_ca = {
sizeof(struct device), power_macebus_match, power_macebus_attach
};
int
power_macebus_match(struct device *parent, void *match, void *aux)
{
return (1);
}
void
power_macebus_attach(struct device *parent, struct device *self, void *aux)
{
struct macebus_attach_args *maa = aux;
/* Establish interrupt handler. */
if (macebus_intr_establish(maa->maa_intr, maa->maa_mace_intr,
IST_EDGE, IPL_TTY, power_intr, self, self->dv_xname))
printf("\n");
else
printf(": unable to establish interrupt!\n");
}
#endif
#if NPOWER_MAINBUS > 0
#include <sgi/xbow/xbow.h>
#include <sgi/xbow/xheartreg.h>
void power_mainbus_attach(struct device *, struct device *, void *);
int power_mainbus_match(struct device *, void *, void *);
int power_mainbus_intr(void *);
struct cfattach power_mainbus_ca = {
sizeof(struct device), power_mainbus_match, power_mainbus_attach
};
int
power_mainbus_match(struct device *parent, void *match, void *aux)
{
struct mainbus_attach_args *maa = aux;
if (strcmp(maa->maa_name, power_cd.cd_name) != 0)
return 0;
return sys_config.system_type == SGI_OCTANE ? 1 : 0;
}
void
power_mainbus_attach(struct device *parent, struct device *self, void *aux)
{
/* Establish interrupt handler. */
if (xbow_intr_establish(power_mainbus_intr, self, HEART_ISR_POWER,
IPL_TTY, self->dv_xname, NULL) != 0) {
printf(": unable to establish interrupt!\n");
return;
}
printf("\n");
}
int
power_mainbus_intr(void *v)
{
/*
* Clear interrupt condition; debouncing the kickstart bit will not
* suffice.
*/
xbow_intr_clear(HEART_ISR_POWER);
return power_intr(v);
}
#endif
int
power_intr(void *unused)
{
extern int allowpowerdown;
int val;
/*
* Prevent further interrupts by clearing the kickstart flag
* in the DS1687's extended control register.
*/
val = dsrtc_register_read(DS1687_EXT_CTRL);
if (val == -1)
return 1; /* no rtc attached */
/* debounce condition */
dsrtc_register_write(DS1687_EXT_CTRL, val & ~DS1687_KICKSTART);
if (allowpowerdown == 1) {
allowpowerdown = 0;
psignal(initproc, SIGUSR2);
}
return 1;
}
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