151 lines
4.0 KiB
C
151 lines
4.0 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2019 Emmanuel Vadot <manu@FreeBSD.org>
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* Copyright (c) 2020 Oskar Holmlund <oskar.holmlund@ohdata.se>
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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 ``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 THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* 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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* Based on sys/arm/ti/ti_sysc.c
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*
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* $FreeBSD$
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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/bus.h>
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#include <sys/fbio.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/rman.h>
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#include <sys/resource.h>
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#include <machine/bus.h>
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#include <vm/vm.h>
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#include <vm/vm_extern.h>
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#include <vm/vm_kern.h>
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#include <vm/pmap.h>
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#include <dev/fdt/simplebus.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 <arm/ti/ti_omap4_cm.h>
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static struct ofw_compat_data compat_data[] = {
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{ "ti,omap4-cm", 1 },
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{ NULL, 0 }
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};
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struct ti_omap4_cm_softc {
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struct simplebus_softc sc;
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device_t dev;
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};
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uint64_t
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ti_omap4_cm_get_simplebus_base_host(device_t dev) {
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struct ti_omap4_cm_softc *sc;
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sc = device_get_softc(dev);
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if (sc->sc.nranges == 0)
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return (0);
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return (sc->sc.ranges[0].host);
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}
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static int ti_omap4_cm_probe(device_t dev);
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static int ti_omap4_cm_attach(device_t dev);
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static int ti_omap4_cm_detach(device_t dev);
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static int
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ti_omap4_cm_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_search_compatible(dev, compat_data)->ocd_data == 0)
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return (ENXIO);
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device_set_desc(dev, "TI OMAP4-CM");
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if (!bootverbose)
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device_quiet(dev);
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return (BUS_PROBE_DEFAULT);
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}
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static int
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ti_omap4_cm_attach(device_t dev)
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{
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struct ti_omap4_cm_softc *sc;
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device_t cdev;
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phandle_t node, child;
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sc = device_get_softc(dev);
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sc->dev = dev;
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node = ofw_bus_get_node(dev);
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simplebus_init(dev, node);
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if (simplebus_fill_ranges(node, &sc->sc) < 0) {
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device_printf(dev, "could not get ranges\n");
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return (ENXIO);
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}
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bus_generic_probe(sc->dev);
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for (child = OF_child(node); child > 0; child = OF_peer(child)) {
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cdev = simplebus_add_device(dev, child, 0, NULL, -1, NULL);
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if (cdev != NULL)
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device_probe_and_attach(cdev);
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}
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return (bus_generic_attach(dev));
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}
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static int
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ti_omap4_cm_detach(device_t dev)
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{
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return (EBUSY);
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}
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static device_method_t ti_omap4_cm_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, ti_omap4_cm_probe),
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DEVMETHOD(device_attach, ti_omap4_cm_attach),
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DEVMETHOD(device_detach, ti_omap4_cm_detach),
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DEVMETHOD_END
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};
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DEFINE_CLASS_1(ti_omap4_cm, ti_omap4_cm_driver, ti_omap4_cm_methods,
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sizeof(struct ti_omap4_cm_softc), simplebus_driver);
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static devclass_t ti_omap4_cm_devclass;
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EARLY_DRIVER_MODULE(ti_omap4_cm, simplebus, ti_omap4_cm_driver,
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ti_omap4_cm_devclass, 0, 0, BUS_PASS_BUS + BUS_PASS_ORDER_FIRST);
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EARLY_DRIVER_MODULE(ti_omap4_cm, ofwbus, ti_omap4_cm_driver,
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ti_omap4_cm_devclass, 0, 0, BUS_PASS_BUS + BUS_PASS_ORDER_FIRST);
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