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/*
* Copyright 2003 by Peter Grehan. 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.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*
*/
/*
* The macio attachment for the OpenPIC interrupt controller.
* A nexus driver is defined so the number of interrupts can be
* determined early in the boot sequence before the hardware
* is accessed - the interrupt i/f is installed at this time,
* and when h/w is finally accessed, interrupt sources allocated
* prior to this are activated
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/kernel.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/openfirm.h>
#include <machine/bus.h>
#include <machine/intr.h>
#include <machine/intr_machdep.h>
#include <machine/md_var.h>
#include <machine/nexusvar.h>
#include <machine/pio.h>
#include <machine/resource.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <sys/rman.h>
#include <machine/openpicvar.h>
#include "pic_if.h"
struct openpic_ofw_softc {
struct openpic_softc osc;
struct resource *sc_memr; /* macio bus resource */
device_t sc_ndev; /* nexus device */
};
static struct openpic_ofw_softc *ofwpicsoftc;
/*
* MacIO interface
*/
static void openpic_ofw_identify(driver_t *, device_t);
static int openpic_ofw_probe(device_t);
static int openpic_ofw_attach(device_t);
static int openpic_macio_probe(device_t);
static int openpic_macio_attach(device_t);
/*
* Nexus attachment
*/
static device_method_t openpic_ofw_methods[] = {
/* Device interface */
DEVMETHOD(device_identify, openpic_ofw_identify),
DEVMETHOD(device_probe, openpic_ofw_probe),
DEVMETHOD(device_attach, openpic_ofw_attach),
/* PIC interface */
DEVMETHOD(pic_allocate_intr, openpic_allocate_intr),
DEVMETHOD(pic_setup_intr, openpic_setup_intr),
DEVMETHOD(pic_teardown_intr, openpic_teardown_intr),
DEVMETHOD(pic_release_intr, openpic_release_intr),
{ 0, 0 }
};
static driver_t openpic_ofw_driver = {
"openpic",
openpic_ofw_methods,
sizeof(struct openpic_ofw_softc)
};
static devclass_t openpic_ofw_devclass;
DRIVER_MODULE(openpic_ofw, nexus, openpic_ofw_driver, openpic_ofw_devclass,
0, 0);
static void
openpic_ofw_identify(driver_t *driver, device_t parent)
{
device_t child;
phandle_t pic;
char type[40];
pic = OF_finddevice("mpic");
if (pic == -1)
return;
OF_getprop(pic, "device_type", type, sizeof(type));
if (strcmp(type, "open-pic") != 0)
return;
child = BUS_ADD_CHILD(parent, 0, "openpic", 0);
if (child != NULL)
nexus_set_device_type(child, "macio");
}
static int
openpic_ofw_probe(device_t dev)
{
char *name;
char *type;
name = nexus_get_name(dev);
type = nexus_get_device_type(dev);
if (strcmp(name, "openpic") != 0 ||
strcmp(type, "macio") != 0)
return (ENXIO);
device_set_desc(dev, OPENPIC_DEVSTR);
return (0);
}
static int
openpic_ofw_attach(device_t dev)
{
KASSERT(ofwpicsoftc == NULL, ("ofw openpic: already probed"));
ofwpicsoftc = device_get_softc(dev);
ofwpicsoftc->sc_ndev = dev;
nexus_install_intcntlr(dev);
openpic_early_attach(dev);
return (0);
}
/*
* MacIO attachment
*/
static device_method_t openpic_macio_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, openpic_macio_probe),
DEVMETHOD(device_attach, openpic_macio_attach),
{ 0, 0 },
};
static driver_t openpic_macio_driver = {
"openpicmacio",
openpic_macio_methods,
0
};
static devclass_t openpic_macio_devclass;
DRIVER_MODULE(openpicmacio, macio, openpic_macio_driver,
openpic_macio_devclass, 0, 0);
static int
openpic_macio_probe(device_t dev)
{
const char *type = ofw_bus_get_type(dev);
if (strcmp(type, "open-pic") != 0)
return (ENXIO);
/*
* The description was already printed out in the nexus
* probe, so don't do it again here
*/
device_set_desc(dev, "OpenPIC MacIO interrupt cell");
if (!bootverbose)
device_quiet(dev);
return (0);
}
static int
openpic_macio_attach(device_t dev)
{
struct openpic_ofw_softc *sc;
int rid;
sc = ofwpicsoftc;
KASSERT(sc != NULL, ("pic not nexus-probed\n"));
rid = 0;
sc->sc_memr = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
RF_ACTIVE);
if (sc->sc_memr == NULL) {
device_printf(dev, "Could not alloc mem resource!\n");
return (ENXIO);
}
sc->osc.sc_bt = rman_get_bustag(sc->sc_memr);
sc->osc.sc_bh = rman_get_bushandle(sc->sc_memr);
sc->osc.sc_altdev = dev;
return (openpic_attach(sc->sc_ndev));
}
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