FreeBSD/Linux Kernel Cross Reference
sys/arm64/coresight/coresight_tmc_fdt.c

     /*-
      * Copyright (c) 2018-2020 Ruslan Bukin <br@bsdpad.com>
      * All rights reserved.
      *
      * This software was developed by BAE Systems, the University of Cambridge
      * Computer Laboratory, and Memorial University under DARPA/AFRL contract
      * FA8650-15-C-7558 ("CADETS"), as part of the DARPA Transparent Computing
      * (TC) research program.
      *
     * 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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/rman.h>
    #include <sys/kernel.h>
    #include <sys/module.h>
    #include <machine/bus.h>
    
    #include <dev/ofw/ofw_bus.h>
    #include <dev/ofw/ofw_bus_subr.h>
    
    #include <arm64/coresight/coresight.h>
    #include <arm64/coresight/coresight_tmc.h>
    
    #include "coresight_if.h"
    
    static struct ofw_compat_data compat_data[] = {
            { "arm,coresight-tmc",                  1 },
            { NULL,                                 0 }
    };
    
    static int
    tmc_fdt_probe(device_t dev)
    {
            if (!ofw_bus_status_okay(dev))
                    return (ENXIO);
    
            if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
                    return (ENXIO);
    
            device_set_desc(dev, "ARM Coresight TMC");
    
            return (BUS_PROBE_DEFAULT);
    }
    
    static int
    tmc_fdt_attach(device_t dev)
    {
            struct tmc_softc *sc;
    
            sc = device_get_softc(dev);
            sc->pdata = coresight_fdt_get_platform_data(dev);
    
            return (tmc_attach(dev));
    }
    
    static device_method_t tmc_fdt_methods[] = {
            /* Device interface */
            DEVMETHOD(device_probe,         tmc_fdt_probe),
            DEVMETHOD(device_attach,        tmc_fdt_attach),
            DEVMETHOD_END
    };
    
    DEFINE_CLASS_1(tmc, tmc_fdt_driver, tmc_fdt_methods,
        sizeof(struct tmc_softc), tmc_driver);
    
    EARLY_DRIVER_MODULE(tmc, simplebus, tmc_fdt_driver, 0, 0,
        BUS_PASS_INTERRUPT + BUS_PASS_ORDER_MIDDLE);

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