12031a6da1
negative diff that should improve reliability somewhat. There should be no differences in behavior -- please report any that crop up. This has been tested on ARM and PPC systems. Tested by: ray
129 lines
3.7 KiB
C
129 lines
3.7 KiB
C
/*-
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* Copyright (c) 2009-2010 The FreeBSD Foundation
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* All rights reserved.
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*
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* This software was developed by Semihalf under sponsorship from
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* the FreeBSD Foundation.
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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/ktr.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <sys/rman.h>
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#include <sys/malloc.h>
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#include <machine/fdt.h>
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#include <dev/ofw/openfirm.h>
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#include <dev/ofw/ofw_nexus.h>
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#include "ofw_bus_if.h"
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/*
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* Prototypes.
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*/
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static void fdtbus_identify(driver_t *, device_t);
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static int fdtbus_probe(device_t);
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static int fdtbus_activate_resource(device_t, device_t, int, int,
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struct resource *);
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static int fdtbus_deactivate_resource(device_t, device_t, int, int,
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struct resource *);
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/*
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* Bus interface definition.
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*/
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static device_method_t fdtbus_methods[] = {
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/* Device interface */
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DEVMETHOD(device_identify, fdtbus_identify),
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DEVMETHOD(device_probe, fdtbus_probe),
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/* Bus interface */
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DEVMETHOD(bus_activate_resource, fdtbus_activate_resource),
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DEVMETHOD(bus_deactivate_resource, fdtbus_deactivate_resource),
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DEVMETHOD(bus_config_intr, bus_generic_config_intr),
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DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
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DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
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DEVMETHOD_END
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};
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devclass_t fdtbus_devclass;
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DEFINE_CLASS_1(fdtbus, fdtbus_driver, fdtbus_methods,
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sizeof(struct ofw_nexus_softc), ofw_nexus_driver);
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DRIVER_MODULE(fdtbus, nexus, fdtbus_driver, fdtbus_devclass, 0, 0);
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static void
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fdtbus_identify(driver_t *driver, device_t parent)
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{
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if (device_find_child(parent, "fdtbus", -1) == NULL)
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BUS_ADD_CHILD(parent, 0, "fdtbus", -1);
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}
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static int
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fdtbus_probe(device_t dev)
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{
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device_set_desc(dev, "Flattened Device Tree");
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return (BUS_PROBE_NOWILDCARD);
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}
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static int
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fdtbus_activate_resource(device_t bus, device_t child, int type, int rid,
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struct resource *res)
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{
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bus_space_handle_t p;
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int error;
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if (type == SYS_RES_MEMORY || type == SYS_RES_IOPORT) {
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/* XXX endianess should be set based on SOC node */
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rman_set_bustag(res, fdtbus_bs_tag);
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rman_set_bushandle(res, rman_get_start(res));
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error = bus_space_map(rman_get_bustag(res),
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rman_get_bushandle(res), rman_get_size(res), 0, &p);
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if (error)
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return (error);
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rman_set_bushandle(res, p);
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}
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return (rman_activate_resource(res));
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}
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static int
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fdtbus_deactivate_resource(device_t bus, device_t child, int type, int rid,
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struct resource *res)
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{
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return (rman_deactivate_resource(res));
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}
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