The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2013 Bjoern A. Zeeb
    5  * All rights reserved.
    6  *
    7  * This software was developed by SRI International and the University of
    8  * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-11-C-0249)
    9  * ("MRC2"), as part of the DARPA MRC research programme.
   10  *
   11  * Redistribution and use in source and binary forms, with or without
   12  * modification, are permitted provided that the following conditions
   13  * are met:
   14  * 1. Redistributions of source code must retain the above copyright
   15  *    notice, this list of conditions and the following disclaimer.
   16  * 2. Redistributions in binary form must reproduce the above copyright
   17  *    notice, this list of conditions and the following disclaimer in the
   18  *    documentation and/or other materials provided with the distribution.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   30  * SUCH DAMAGE.
   31  */
   32 
   33 #include <sys/cdefs.h>
   34 __FBSDID("$FreeBSD$");
   35 
   36 #include <sys/param.h>
   37 #include <sys/bus.h>
   38 #include <sys/kernel.h>
   39 #include <sys/module.h>
   40 #include <sys/rman.h>
   41 #include <sys/socket.h>
   42 #include <sys/systm.h>
   43 
   44 #include <machine/bus.h>
   45 #include <machine/resource.h>
   46 
   47 #include <net/ethernet.h>
   48 #include <net/if.h>
   49 #include <net/if_media.h>
   50 #include <net/if_var.h>
   51 
   52 #include <dev/mii/mii.h>
   53 #include <dev/mii/miivar.h>
   54 
   55 #include <dev/fdt/fdt_common.h>
   56 #include <dev/ofw/openfirm.h>
   57 #include <dev/ofw/ofw_bus.h>
   58 #include <dev/ofw/ofw_bus_subr.h>
   59 
   60 #include <dev/altera/atse/if_atsereg.h>
   61 
   62 /* "device miibus" required.  See GENERIC if you get errors here. */
   63 #include "miibus_if.h"
   64 
   65 static int
   66 atse_probe_fdt(device_t dev)
   67 {
   68 
   69         if (!ofw_bus_status_okay(dev))
   70                 return (ENXIO);
   71 
   72         if (!ofw_bus_is_compatible(dev, "altera,atse")) {
   73                 return (ENXIO);
   74         }
   75 
   76         device_set_desc(dev, "Altera Triple-Speed Ethernet MegaCore");
   77 
   78         return (BUS_PROBE_DEFAULT);
   79 }
   80 
   81 static int
   82 atse_attach_fdt(device_t dev)
   83 {
   84         struct atse_softc *sc;
   85         int error;
   86 
   87         sc = device_get_softc(dev);
   88         sc->atse_dev = dev;
   89         sc->atse_unit = device_get_unit(dev);
   90 
   91         /*
   92          * FDT has the list of our resources.  Given we are using multiple
   93          * memory regions and possibly multiple interrupts, we need to attach
   94          * them in the order specified in .dts:
   95          * MAC, RX and RXC FIFO, TX and TXC FIFO; RX INTR, TX INTR.
   96          */
   97 
   98         /* MAC: Avalon-MM, atse management register region. */
   99         sc->atse_mem_rid = 0;
  100         sc->atse_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
  101             &sc->atse_mem_rid, RF_ACTIVE);
  102         if (sc->atse_mem_res == NULL) {
  103                 device_printf(dev, "failed to map memory for ctrl region\n");
  104                 /* Cleanup. */
  105                 atse_detach_resources(dev);
  106 
  107                 return (ENXIO);
  108         }
  109         if (bootverbose)
  110                 device_printf(sc->atse_dev, "MAC ctrl region at mem %p-%p\n",
  111                     (void *)rman_get_start(sc->atse_mem_res),
  112                     (void *)(rman_get_start(sc->atse_mem_res) +
  113                     rman_get_size(sc->atse_mem_res)));
  114 
  115         error = atse_attach(dev);
  116         if (error) {
  117                 /* Cleanup. */
  118                 atse_detach_resources(dev);
  119 
  120                 return (error);
  121         }
  122 
  123         return (0);
  124 }
  125 
  126 static device_method_t atse_methods_fdt[] = {
  127         /* Device interface */
  128         DEVMETHOD(device_probe,         atse_probe_fdt),
  129         DEVMETHOD(device_attach,        atse_attach_fdt),
  130         DEVMETHOD(device_detach,        atse_detach_dev),
  131 
  132         /* MII interface */
  133         DEVMETHOD(miibus_readreg,       atse_miibus_readreg),
  134         DEVMETHOD(miibus_writereg,      atse_miibus_writereg),
  135         DEVMETHOD(miibus_statchg,       atse_miibus_statchg),
  136 
  137         DEVMETHOD_END
  138 };
  139 
  140 static driver_t atse_driver_fdt = {
  141         "atse",
  142         atse_methods_fdt,
  143         sizeof(struct atse_softc)
  144 };
  145 
  146 DRIVER_MODULE(atse, simplebus, atse_driver_fdt, 0, 0);
  147 DRIVER_MODULE(miibus, atse, miibus_driver, 0, 0);

Cache object: 8e574155305ef06c62d8d545253fb6ec


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