FreeBSD/Linux Kernel Cross Reference
sys/dev/altera/atse/if_atse_fdt.c

     /*-
      * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
      *
      * Copyright (c) 2013 Bjoern A. Zeeb
      * All rights reserved.
      *
      * This software was developed by SRI International and the University of
      * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-11-C-0249)
      * ("MRC2"), as part of the DARPA MRC research programme.
     *
     * 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: releng/12.0/sys/dev/altera/atse/if_atse_fdt.c 332474 2018-04-13 15:59:24Z br $");
    
    #include <sys/param.h>
    #include <sys/bus.h>
    #include <sys/kernel.h>
    #include <sys/module.h>
    #include <sys/rman.h>
    #include <sys/socket.h>
    #include <sys/systm.h>
    
    #include <machine/bus.h>
    #include <machine/resource.h>
    
    #include <net/ethernet.h>
    #include <net/if.h>
    #include <net/if_media.h>
    #include <net/if_var.h>
    
    #include <dev/mii/mii.h>
    #include <dev/mii/miivar.h>
    
    #include <dev/fdt/fdt_common.h>
    #include <dev/ofw/openfirm.h>
    #include <dev/ofw/ofw_bus.h>
    #include <dev/ofw/ofw_bus_subr.h>
    
    #include <dev/altera/atse/if_atsereg.h>
    
    /* "device miibus" required.  See GENERIC if you get errors here. */
    #include "miibus_if.h"
    
    static int
    atse_probe_fdt(device_t dev)
    {
    
            if (!ofw_bus_status_okay(dev))
                    return (ENXIO);
    
            if (!ofw_bus_is_compatible(dev, "altera,atse")) {
                    return (ENXIO);
            }
    
            device_set_desc(dev, "Altera Triple-Speed Ethernet MegaCore");
    
            return (BUS_PROBE_DEFAULT);
    }
    
    static int
    atse_attach_fdt(device_t dev)
    {
            struct atse_softc *sc;
            int error;
    
            sc = device_get_softc(dev);
            sc->atse_dev = dev;
            sc->atse_unit = device_get_unit(dev);
    
            /*
             * FDT has the list of our resources.  Given we are using multiple
             * memory regions and possibly multiple interrupts, we need to attach
             * them in the order specified in .dts:
             * MAC, RX and RXC FIFO, TX and TXC FIFO; RX INTR, TX INTR.
             */
    
            /* MAC: Avalon-MM, atse management register region. */
            sc->atse_mem_rid = 0;
           sc->atse_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
               &sc->atse_mem_rid, RF_ACTIVE);
           if (sc->atse_mem_res == NULL) {
                   device_printf(dev, "failed to map memory for ctrl region\n");
                   /* Cleanup. */
                   atse_detach_resources(dev);
   
                   return (ENXIO);
           }
           if (bootverbose)
                   device_printf(sc->atse_dev, "MAC ctrl region at mem %p-%p\n",
                       (void *)rman_get_start(sc->atse_mem_res),
                       (void *)(rman_get_start(sc->atse_mem_res) +
                       rman_get_size(sc->atse_mem_res)));
   
           error = atse_attach(dev);
           if (error) {
                   /* Cleanup. */
                   atse_detach_resources(dev);
   
                   return (error);
           }
   
           return (0);
   }
   
   static device_method_t atse_methods_fdt[] = {
           /* Device interface */
           DEVMETHOD(device_probe,         atse_probe_fdt),
           DEVMETHOD(device_attach,        atse_attach_fdt),
           DEVMETHOD(device_detach,        atse_detach_dev),
   
           /* MII interface */
           DEVMETHOD(miibus_readreg,       atse_miibus_readreg),
           DEVMETHOD(miibus_writereg,      atse_miibus_writereg),
           DEVMETHOD(miibus_statchg,       atse_miibus_statchg),
   
           DEVMETHOD_END
   };
   
   static driver_t atse_driver_fdt = {
           "atse",
           atse_methods_fdt,
           sizeof(struct atse_softc)
   };
   
   DRIVER_MODULE(atse, simplebus, atse_driver_fdt, atse_devclass, 0, 0);
   DRIVER_MODULE(miibus, atse, miibus_driver, miibus_devclass, 0, 0);

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