82 lines
2.7 KiB
C
82 lines
2.7 KiB
C
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/*-
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* Copyright (c) 2016 Stanislav Galabov.
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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 THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#include <sys/rman.h>
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#include <dev/ofw/openfirm.h>
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#include <dev/ofw/ofw_bus.h>
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#include <dev/ofw/ofw_bus_subr.h>
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#include <dev/fdt/simplebus.h>
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/*
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* Driver for Mediatek/Ralink Palmbus
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*
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* Currently the only reason for the existence of this driver is so that we can
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* minimize the changes required to the upstream DTS files we use.
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* Otherwise palmbus is a very simple subclass of our simplebus and the only
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* difference between the two is the actual value of the compatible property.
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*/
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static int
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palmbus_probe(device_t dev)
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{
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if (!ofw_bus_status_okay(dev))
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return (ENXIO);
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if (!(ofw_bus_is_compatible(dev, "palmbus") &&
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ofw_bus_has_prop(dev, "ranges")) &&
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(ofw_bus_get_type(dev) == NULL || strcmp(ofw_bus_get_type(dev),
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"soc") != 0))
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return (ENXIO);
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device_set_desc(dev, "MTK Palmbus");
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return (0);
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}
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static device_method_t palmbus_methods[] = {
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DEVMETHOD(device_probe, palmbus_probe),
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DEVMETHOD_END
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};
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DEFINE_CLASS_1(palmbus, palmbus_driver, palmbus_methods,
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sizeof(struct simplebus_softc), simplebus_driver);
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static devclass_t palmbus_devclass;
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EARLY_DRIVER_MODULE(palmbus, ofwbus, palmbus_driver, palmbus_devclass, 0, 0,
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BUS_PASS_BUS + BUS_PASS_ORDER_MIDDLE);
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MODULE_VERSION(palmbus, 1);
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