The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/dev/mii/ukphy.c

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    1 /*      $NetBSD: ukphy.c,v 1.2 1999/04/23 04:24:32 thorpej Exp $        */
    2 
    3 /*-
    4  * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
    5  * All rights reserved.
    6  *
    7  * This code is derived from software contributed to The NetBSD Foundation
    8  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
    9  * NASA Ames Research Center, and by Frank van der Linden.
   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  * 3. All advertising materials mentioning features or use of this software
   20  *    must display the following acknowledgement:
   21  *      This product includes software developed by the NetBSD
   22  *      Foundation, Inc. and its contributors.
   23  * 4. Neither the name of The NetBSD Foundation nor the names of its
   24  *    contributors may be used to endorse or promote products derived
   25  *    from this software without specific prior written permission.
   26  *
   27  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   28  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   29  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   30  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   31  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   32  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   33  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   34  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   35  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   36  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   37  * POSSIBILITY OF SUCH DAMAGE.
   38  */
   39 
   40 /*
   41  * Copyright (c) 1997 Manuel Bouyer.  All rights reserved.
   42  *
   43  * Redistribution and use in source and binary forms, with or without
   44  * modification, are permitted provided that the following conditions
   45  * are met:
   46  * 1. Redistributions of source code must retain the above copyright
   47  *    notice, this list of conditions and the following disclaimer.
   48  * 2. Redistributions in binary form must reproduce the above copyright
   49  *    notice, this list of conditions and the following disclaimer in the
   50  *    documentation and/or other materials provided with the distribution.
   51  * 3. All advertising materials mentioning features or use of this software
   52  *    must display the following acknowledgement:
   53  *      This product includes software developed by Manuel Bouyer.
   54  * 4. The name of the author may not be used to endorse or promote products
   55  *    derived from this software without specific prior written permission.
   56  *
   57  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   58  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   59  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   60  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   61  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   62  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   63  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   64  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   65  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   66  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   67  */
   68 
   69 /*
   70  * driver for generic unknown PHYs
   71  */
   72 
   73 #include <sys/param.h>
   74 #include <sys/systm.h>
   75 #include <sys/kernel.h>
   76 #include <sys/socket.h>
   77 #include <sys/errno.h>
   78 #include <sys/module.h>
   79 #include <sys/bus.h>
   80 
   81 #include <net/if.h>
   82 #include <net/if_media.h>
   83 
   84 
   85 #include <dev/mii/mii.h>
   86 #include <dev/mii/miivar.h>
   87 
   88 #include "miibus_if.h"
   89 
   90 #if !defined(lint)
   91 static const char rcsid[] =
   92   "$FreeBSD: releng/5.0/sys/dev/mii/ukphy.c 105135 2002-10-14 22:31:52Z alfred $";
   93 #endif
   94 
   95 static int ukphy_probe(device_t);
   96 static int ukphy_attach(device_t);
   97 
   98 static device_method_t ukphy_methods[] = {
   99         /* device interface */
  100         DEVMETHOD(device_probe,         ukphy_probe),
  101         DEVMETHOD(device_attach,        ukphy_attach),
  102         DEVMETHOD(device_detach,        mii_phy_detach),
  103         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
  104         { 0, 0 }
  105 };
  106 
  107 static devclass_t ukphy_devclass;
  108 
  109 static driver_t ukphy_driver = {
  110         "ukphy",
  111         ukphy_methods,
  112         sizeof(struct mii_softc)
  113 };
  114 
  115 DRIVER_MODULE(ukphy, miibus, ukphy_driver, ukphy_devclass, 0, 0);
  116 
  117 static int      ukphy_service(struct mii_softc *, struct mii_data *, int);
  118 
  119 static int
  120 ukphy_probe(dev)
  121         device_t                dev;
  122 {
  123 
  124         /*
  125          * We know something is here, so always match at a low priority.
  126          */
  127         device_set_desc(dev, "Generic IEEE 802.3u media interface");
  128         return (-100);
  129 }
  130 
  131 static int
  132 ukphy_attach(dev)
  133         device_t                dev;
  134 {
  135         struct mii_softc *sc;
  136         struct mii_attach_args *ma;
  137         struct mii_data *mii;
  138 
  139         sc = device_get_softc(dev);
  140         ma = device_get_ivars(dev);
  141         sc->mii_dev = device_get_parent(dev);
  142         mii = device_get_softc(sc->mii_dev);
  143         LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
  144 
  145         if (bootverbose)
  146                 device_printf(dev, "OUI 0x%06x, model 0x%04x, rev. %d\n",
  147                     MII_OUI(ma->mii_id1, ma->mii_id2),
  148                     MII_MODEL(ma->mii_id2), MII_REV(ma->mii_id2));
  149 
  150         sc->mii_inst = mii->mii_instance;
  151         sc->mii_phy = ma->mii_phyno;
  152         sc->mii_service = ukphy_service;
  153         sc->mii_pdata = mii;
  154 
  155         mii->mii_instance++;
  156 
  157         sc->mii_flags |= MIIF_NOISOLATE;
  158 
  159         mii_phy_reset(sc);
  160 
  161         sc->mii_capabilities =
  162             PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
  163         if (sc->mii_capabilities & BMSR_EXTSTAT)
  164                 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
  165         device_printf(dev, " ");
  166         mii_phy_add_media(sc);
  167         printf("\n");
  168 
  169         MIIBUS_MEDIAINIT(sc->mii_dev);
  170 
  171         return(0);
  172 }
  173 
  174 static int
  175 ukphy_service(sc, mii, cmd)
  176         struct mii_softc *sc;
  177         struct mii_data *mii;
  178         int cmd;
  179 {
  180         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  181         int reg;
  182 
  183         switch (cmd) {
  184         case MII_POLLSTAT:
  185                 /*
  186                  * If we're not polling our PHY instance, just return.
  187                  */
  188                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  189                         return (0);
  190                 break;
  191 
  192         case MII_MEDIACHG:
  193                 /*
  194                  * If the media indicates a different PHY instance,
  195                  * isolate ourselves.
  196                  */
  197                 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
  198                         reg = PHY_READ(sc, MII_BMCR);
  199                         PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
  200                         return (0);
  201                 }
  202 
  203                 /*
  204                  * If the interface is not up, don't do anything.
  205                  */
  206                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  207                         break;
  208 
  209                 mii_phy_setmedia(sc);
  210                 break;
  211 
  212         case MII_TICK:
  213                 /*
  214                  * If we're not currently selected, just return.
  215                  */
  216                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  217                         return (0);
  218                 if (mii_phy_tick(sc) == EJUSTRETURN)
  219                         return (0);
  220                 break;
  221         }
  222 
  223         /* Update the media status. */
  224         ukphy_status(sc);
  225 
  226         /* Callback if something changed. */
  227         mii_phy_update(sc, cmd);
  228         return (0);
  229 }

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