FreeBSD/Linux Kernel Cross Reference
sys/dev/scc/scc_bfe_macio.c

     /*-
      * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
      *
      * Copyright (c) 2006 Marcel Moolenaar
      * 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.
     *
     * 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("$FreeBSD$");
    
    #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 <dev/ofw/ofw_bus.h>
    
    #include <machine/bus.h>
    #include <sys/rman.h>
    #include <machine/resource.h>
    
    #include <dev/scc/scc_bfe.h>
    
    #define MACIO_REGSHFT   4
    #define MACIO_RCLK      230400
    
    static int
    scc_macio_probe(device_t dev)
    {
            struct scc_softc *sc;
            const char *nm;
    
            sc = device_get_softc(dev);
            nm = ofw_bus_get_name(dev);
            /* Attach to modern escc (channel shift 4 bits) */
            if (!strcmp(nm, "escc")) {
                    device_set_desc(dev, "Zilog Z8530 dual channel SCC");
                    sc->sc_class = &scc_z8530_escc_class;
                    return (scc_bfe_probe(dev, MACIO_REGSHFT, MACIO_RCLK, 0));
            }
            return (ENXIO);
    }
    
    static int
    scc_macio_attach(device_t dev)
    {
    
            return (scc_bfe_attach(dev, 3));
    }
    
    static device_method_t scc_macio_methods[] = {
            /* Device interface */
            DEVMETHOD(device_probe,         scc_macio_probe),
            DEVMETHOD(device_attach,        scc_macio_attach),
            DEVMETHOD(device_detach,        scc_bfe_detach),
    
            DEVMETHOD(bus_alloc_resource,   scc_bus_alloc_resource),
            DEVMETHOD(bus_release_resource, scc_bus_release_resource),
            DEVMETHOD(bus_get_resource,     scc_bus_get_resource),
            DEVMETHOD(bus_read_ivar,        scc_bus_read_ivar),
            DEVMETHOD(bus_setup_intr,       scc_bus_setup_intr),
            DEVMETHOD(bus_teardown_intr,    scc_bus_teardown_intr),
    
            DEVMETHOD_END
    };
    
    static driver_t scc_macio_driver = {
            scc_driver_name,
            scc_macio_methods,
            sizeof(struct scc_softc),
    };
    
    DRIVER_MODULE(scc, macio, scc_macio_driver, NULL, NULL);

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