123 lines
3.2 KiB
C
123 lines
3.2 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
|
|
*
|
|
* Copyright (C) 2002 Benno Rice.
|
|
* All rights reserved.
|
|
*
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY Benno Rice ``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 TOOLS GMBH 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include "opt_ddb.h"
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kdb.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/module.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/bus.h>
|
|
#include <machine/bus.h>
|
|
#include <sys/rman.h>
|
|
|
|
#include <machine/resource.h>
|
|
|
|
#include <dev/ofw/ofw_bus.h>
|
|
#include <dev/ofw/openfirm.h>
|
|
|
|
#include <powerpc/powermac/maciovar.h>
|
|
|
|
struct pswitch_softc {
|
|
int sc_irq_rid;
|
|
struct resource *sc_irq;
|
|
void *sc_ih;
|
|
};
|
|
|
|
static int pswitch_probe(device_t);
|
|
static int pswitch_attach(device_t);
|
|
|
|
static int pswitch_intr(void *);
|
|
|
|
static device_method_t pswitch_methods[] = {
|
|
/* Device interface */
|
|
DEVMETHOD(device_probe, pswitch_probe),
|
|
DEVMETHOD(device_attach, pswitch_attach),
|
|
{ 0, 0 }
|
|
};
|
|
|
|
static driver_t pswitch_driver = {
|
|
"pswitch",
|
|
pswitch_methods,
|
|
sizeof(struct pswitch_softc)
|
|
};
|
|
|
|
EARLY_DRIVER_MODULE(pswitch, macgpio, pswitch_driver, 0, 0, BUS_PASS_RESOURCE);
|
|
|
|
static int
|
|
pswitch_probe(device_t dev)
|
|
{
|
|
const char *type = ofw_bus_get_type(dev);
|
|
|
|
if (strcmp(type, "programmer-switch") != 0)
|
|
return (ENXIO);
|
|
|
|
device_set_desc(dev, "GPIO Programmer's Switch");
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
pswitch_attach(device_t dev)
|
|
{
|
|
struct pswitch_softc *sc;
|
|
|
|
sc = device_get_softc(dev);
|
|
|
|
sc->sc_irq_rid = 0;
|
|
sc->sc_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ,
|
|
&sc->sc_irq_rid, RF_ACTIVE);
|
|
if (sc->sc_irq == NULL) {
|
|
device_printf(dev, "could not allocate interrupt\n");
|
|
return (ENXIO);
|
|
}
|
|
|
|
if (bus_setup_intr(dev, sc->sc_irq, INTR_TYPE_MISC | INTR_EXCL,
|
|
pswitch_intr, NULL, dev, &sc->sc_ih) != 0) {
|
|
device_printf(dev, "could not setup interrupt\n");
|
|
bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irq_rid,
|
|
sc->sc_irq);
|
|
return (ENXIO);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
pswitch_intr(void *arg)
|
|
{
|
|
device_t dev;
|
|
|
|
dev = (device_t)arg;
|
|
|
|
kdb_enter(KDB_WHY_POWERPC, device_get_nameunit(dev));
|
|
return (FILTER_HANDLED);
|
|
}
|