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/*-
* 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/openfirm.h>
#include <powerpc/powermac/maciovar.h>
struct pswitch_softc {
int sc_irqrid;
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)
};
static devclass_t pswitch_devclass;
DRIVER_MODULE(pswitch, macio, pswitch_driver, pswitch_devclass, 0, 0);
static int
pswitch_probe(device_t dev)
{
char *type = macio_get_devtype(dev);
if (strcmp(type, "gpio") != 0)
return (ENXIO);
device_set_desc(dev, "GPIO Programmer's Switch");
return (0);
}
static int
pswitch_attach(device_t dev)
{
struct pswitch_softc *sc;
phandle_t node, child;
char type[32];
u_int irq[2];
sc = device_get_softc(dev);
node = macio_get_node(dev);
for (child = OF_child(node); child != 0; child = OF_peer(child)) {
if (OF_getprop(child, "device_type", type, 32) == -1)
continue;
if (strcmp(type, "programmer-switch") == 0)
break;
}
if (child == 0) {
device_printf(dev, "could not find correct node\n");
return (ENXIO);
}
if (OF_getprop(child, "interrupts", irq, sizeof(irq)) == -1) {
device_printf(dev, "could not get interrupt\n");
return (ENXIO);
}
sc->sc_irqrid = 0;
sc->sc_irq = bus_alloc_resource(dev, SYS_RES_IRQ, &sc->sc_irqrid,
irq[0], irq[0], 1, 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,
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_irqrid,
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);
}
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