106 lines
2.9 KiB
C
106 lines
2.9 KiB
C
/*-
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* Copyright (c) 2014 Warner Losh. 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 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 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 "opt_platform.h"
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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/bus.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/resource.h>
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#include <sys/systm.h>
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#include <sys/rman.h>
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#include <machine/bus.h>
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#include <arm/at91/at91var.h>
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#include <arm/at91/at91_aicreg.h>
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#ifdef FDT
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#include <dev/fdt/fdt_common.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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#endif
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struct sdramc_softc {
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struct resource *mem_res; /* Memory resource */
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device_t sc_dev;
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};
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static int
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at91_sdramc_probe(device_t dev)
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{
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#ifdef FDT
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if (!ofw_bus_is_compatible(dev, "atmel,at91sam9260-sdramc"))
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return (ENXIO);
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#endif
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device_set_desc(dev, "SDRAMC");
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return (0);
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}
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static int
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at91_sdramc_attach(device_t dev)
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{
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int rid, err = 0;
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struct sdramc_softc *sc;
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sc = device_get_softc(dev);
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sc->sc_dev = dev;
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rid = 0;
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sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
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RF_ACTIVE);
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if (sc->mem_res == NULL)
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panic("couldn't allocate register resources");
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return (err);
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}
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static device_method_t at91_sdramc_methods[] = {
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DEVMETHOD(device_probe, at91_sdramc_probe),
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DEVMETHOD(device_attach, at91_sdramc_attach),
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DEVMETHOD_END
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};
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static driver_t at91_sdramc_driver = {
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"at91_sdramc",
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at91_sdramc_methods,
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sizeof(struct sdramc_softc),
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};
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static devclass_t at91_sdramc_devclass;
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#ifdef FDT
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DRIVER_MODULE(at91_sdramc, simplebus, at91_sdramc_driver, at91_sdramc_devclass, NULL,
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NULL);
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#else
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DRIVER_MODULE(at91_sdramc, atmelarm, at91_sdramc_driver, at91_sdramc_devclass, NULL,
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NULL);
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#endif
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