FreeBSD/Linux Kernel Cross Reference
sys/dev/cfi/cfi_bus_fdt.c

     /*-
      * SPDX-License-Identifier: BSD-3-Clause
      *
      * Copyright (c) 2007, Juniper Networks, Inc.
      * 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. Neither the name of the author nor the names of any co-contributors
     *    may 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.
     */
    
    #include <sys/cdefs.h>
    __FBSDID("$FreeBSD: releng/12.0/sys/dev/cfi/cfi_bus_fdt.c 326022 2017-11-20 19:36:21Z pfg $");
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/bus.h>
    #include <sys/conf.h>
    #include <sys/kernel.h>
    #include <sys/module.h>
    
    #include <machine/bus.h>
    
    #include <dev/cfi/cfi_var.h>
    #include <dev/ofw/ofw_bus.h>
    #include <dev/ofw/ofw_bus_subr.h>
    
    static int cfi_fdt_probe(device_t);
    
    static device_method_t cfi_fdt_methods[] = {
            /* device interface */
            DEVMETHOD(device_probe,         cfi_fdt_probe),
            DEVMETHOD(device_attach,        cfi_attach),
            DEVMETHOD(device_detach,        cfi_detach),
    
            DEVMETHOD_END
    };
    
    static driver_t cfi_fdt_driver = {
            cfi_driver_name,
            cfi_fdt_methods,
            sizeof(struct cfi_softc),
    };
    
    DRIVER_MODULE (cfi, lbc, cfi_fdt_driver, cfi_devclass, 0, 0);
    DRIVER_MODULE (cfi, simplebus, cfi_fdt_driver, cfi_devclass, 0, 0);
    
    static int
    cfi_fdt_probe(device_t dev)
    {
    
            if (!ofw_bus_status_okay(dev))
                    return (ENXIO);
    
            if (!ofw_bus_is_compatible(dev, "cfi-flash"))
                    return (ENXIO);
    
            return (cfi_probe(dev));
    }

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