3de213cc00
for that argument. This will allow DDB to detect the broad category of reason why the debugger has been entered, which it can use for the purposes of deciding which DDB script to run. Assign approximate why values to all current consumers of the kdb_enter() interface.
145 lines
3.6 KiB
C
145 lines
3.6 KiB
C
/*-
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* Copyright (C) 2002 Benno Rice.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY Benno Rice ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include "opt_ddb.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kdb.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/malloc.h>
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#include <sys/bus.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <machine/resource.h>
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#include <dev/ofw/openfirm.h>
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#include <powerpc/powermac/maciovar.h>
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struct pswitch_softc {
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int sc_irqrid;
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struct resource *sc_irq;
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void *sc_ih;
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};
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static int pswitch_probe(device_t);
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static int pswitch_attach(device_t);
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static int pswitch_intr(void *);
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static device_method_t pswitch_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, pswitch_probe),
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DEVMETHOD(device_attach, pswitch_attach),
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{ 0, 0 }
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};
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static driver_t pswitch_driver = {
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"pswitch",
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pswitch_methods,
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sizeof(struct pswitch_softc)
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};
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static devclass_t pswitch_devclass;
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DRIVER_MODULE(pswitch, macio, pswitch_driver, pswitch_devclass, 0, 0);
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static int
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pswitch_probe(device_t dev)
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{
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char *type = macio_get_devtype(dev);
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if (strcmp(type, "gpio") != 0)
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return (ENXIO);
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device_set_desc(dev, "GPIO Programmer's Switch");
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return (0);
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}
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static int
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pswitch_attach(device_t dev)
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{
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struct pswitch_softc *sc;
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phandle_t node, child;
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char type[32];
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u_int irq[2];
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sc = device_get_softc(dev);
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node = macio_get_node(dev);
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for (child = OF_child(node); child != 0; child = OF_peer(child)) {
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if (OF_getprop(child, "device_type", type, 32) == -1)
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continue;
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if (strcmp(type, "programmer-switch") == 0)
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break;
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}
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if (child == 0) {
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device_printf(dev, "could not find correct node\n");
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return (ENXIO);
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}
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if (OF_getprop(child, "interrupts", irq, sizeof(irq)) == -1) {
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device_printf(dev, "could not get interrupt\n");
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return (ENXIO);
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}
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sc->sc_irqrid = 0;
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sc->sc_irq = bus_alloc_resource(dev, SYS_RES_IRQ, &sc->sc_irqrid,
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irq[0], irq[0], 1, RF_ACTIVE);
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if (sc->sc_irq == NULL) {
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device_printf(dev, "could not allocate interrupt\n");
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return (ENXIO);
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}
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if (bus_setup_intr(dev, sc->sc_irq, INTR_TYPE_MISC,
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pswitch_intr, NULL, dev, &sc->sc_ih) != 0) {
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device_printf(dev, "could not setup interrupt\n");
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bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irqrid,
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sc->sc_irq);
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return (ENXIO);
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}
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return (0);
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}
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static int
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pswitch_intr(void *arg)
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{
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device_t dev;
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dev = (device_t)arg;
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kdb_enter(KDB_WHY_POWERPC, device_get_nameunit(dev));
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return (FILTER_HANDLED);
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}
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