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

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    1 /*      $NetBSD: makphy.c,v 1.12 2003/04/29 01:49:34 thorpej Exp $      */
    2 
    3 /*-
    4  * Copyright (c) 1998, 1999, 2000, 2001 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.
   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 the Marvell 88E1000 ``Alaska'' 10/100/1000 PHY.
   71  */
   72 
   73 #include <sys/cdefs.h>
   74 __KERNEL_RCSID(0, "$NetBSD: makphy.c,v 1.12 2003/04/29 01:49:34 thorpej Exp $");
   75 
   76 #include <sys/param.h>
   77 #include <sys/systm.h>
   78 #include <sys/kernel.h>
   79 #include <sys/device.h>
   80 #include <sys/socket.h>
   81 #include <sys/errno.h>
   82 
   83 #include <net/if.h>
   84 #include <net/if_media.h>
   85 
   86 #include <dev/mii/mii.h>
   87 #include <dev/mii/miivar.h>
   88 #include <dev/mii/miidevs.h>
   89 
   90 #include <dev/mii/makphyreg.h>
   91 
   92 int     makphymatch(struct device *, struct cfdata *, void *);
   93 void    makphyattach(struct device *, struct device *, void *);
   94 
   95 CFATTACH_DECL(makphy, sizeof(struct mii_softc),
   96     makphymatch, makphyattach, mii_phy_detach, mii_phy_activate);
   97 
   98 int     makphy_service(struct mii_softc *, struct mii_data *, int);
   99 void    makphy_status(struct mii_softc *);
  100 
  101 const struct mii_phy_funcs makphy_funcs = {
  102         makphy_service, makphy_status, mii_phy_reset,
  103 };
  104 
  105 const struct mii_phydesc makphys[] = {
  106         { MII_OUI_xxMARVELL,            MII_MODEL_xxMARVELL_E1000_3,
  107           MII_STR_xxMARVELL_E1000_3 },
  108 
  109         { MII_OUI_xxMARVELL,            MII_MODEL_xxMARVELL_E1000_5,
  110           MII_STR_xxMARVELL_E1000_5 },
  111 
  112         { MII_OUI_xxMARVELL,            MII_MODEL_xxMARVELL_E1011,
  113           MII_STR_xxMARVELL_E1011 },
  114 
  115         { 0,                            0,
  116           NULL },
  117 };
  118 
  119 int
  120 makphymatch(struct device *parent, struct cfdata *match, void *aux)
  121 {
  122         struct mii_attach_args *ma = aux;
  123 
  124         if (mii_phy_match(ma, makphys) != NULL)
  125                 return (10);
  126 
  127         return (0);
  128 }
  129 
  130 void
  131 makphyattach(struct device *parent, struct device *self, void *aux)
  132 {
  133         struct mii_softc *sc = (struct mii_softc *)self;
  134         struct mii_attach_args *ma = aux;
  135         struct mii_data *mii = ma->mii_data;
  136         const struct mii_phydesc *mpd;
  137 
  138         mpd = mii_phy_match(ma, makphys);
  139         aprint_naive(": Media interface\n");
  140         aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
  141 
  142         sc->mii_inst = mii->mii_instance;
  143         sc->mii_phy = ma->mii_phyno;
  144         sc->mii_funcs = &makphy_funcs;
  145         sc->mii_pdata = mii;
  146         sc->mii_flags = ma->mii_flags;
  147         sc->mii_anegticks = 5;
  148 
  149         PHY_RESET(sc);
  150 
  151         sc->mii_capabilities =
  152             PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
  153         if (sc->mii_capabilities & BMSR_EXTSTAT)
  154                 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
  155 
  156         aprint_normal("%s: ", sc->mii_dev.dv_xname);
  157         if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 &&
  158             (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0)
  159                 aprint_error("no media present");
  160         else
  161                 mii_phy_add_media(sc);
  162         aprint_normal("\n");
  163 }
  164 
  165 int
  166 makphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
  167 {
  168         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  169         int reg;
  170 
  171         switch (cmd) {
  172         case MII_POLLSTAT:
  173                 /*
  174                  * If we're not polling our PHY instance, just return.
  175                  */
  176                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  177                         return (0);
  178                 break;
  179 
  180         case MII_MEDIACHG:
  181                 /*
  182                  * If the media indicates a different PHY instance,
  183                  * isolate ourselves.
  184                  */
  185                 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
  186                         reg = PHY_READ(sc, MII_BMCR);
  187                         PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
  188                         return (0);
  189                 }
  190 
  191                 /*
  192                  * If the interface is not up, don't do anything.
  193                  */
  194                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  195                         break;
  196 
  197                 mii_phy_setmedia(sc);
  198                 break;
  199 
  200         case MII_TICK:
  201                 /*
  202                  * If we're not currently selected, just return.
  203                  */
  204                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  205                         return (0);
  206 
  207                 if (mii_phy_tick(sc) == EJUSTRETURN)
  208                         return (0);
  209                 break;
  210 
  211         case MII_DOWN:
  212                 mii_phy_down(sc);
  213                 return (0);
  214         }
  215 
  216         /* Update the media status. */
  217         mii_phy_status(sc);
  218 
  219         /* Callback if something changed. */
  220         mii_phy_update(sc, cmd);
  221         return (0);
  222 }
  223 
  224 void
  225 makphy_status(struct mii_softc *sc)
  226 {
  227         struct mii_data *mii = sc->mii_pdata;
  228         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  229         int bmcr, pssr, gtsr;
  230 
  231         mii->mii_media_status = IFM_AVALID;
  232         mii->mii_media_active = IFM_ETHER;
  233 
  234         pssr = PHY_READ(sc, MII_MAKPHY_PSSR);
  235 
  236         if (pssr & PSSR_LINK)
  237                 mii->mii_media_status |= IFM_ACTIVE;
  238 
  239         bmcr = PHY_READ(sc, MII_BMCR);
  240         if (bmcr & BMCR_ISO) {
  241                 mii->mii_media_active |= IFM_NONE;
  242                 mii->mii_media_status = 0;
  243                 return;
  244         }
  245 
  246         if (bmcr & BMCR_LOOP)
  247                 mii->mii_media_active |= IFM_LOOP;
  248 
  249         if (bmcr & BMCR_AUTOEN) {
  250                 /*
  251                  * The media status bits are only valid of autonegotiation
  252                  * has completed (or it's disabled).
  253                  */
  254                 if ((pssr & PSSR_RESOLVED) == 0) {
  255                         /* Erg, still trying, I guess... */
  256                         mii->mii_media_active |= IFM_NONE;
  257                         return;
  258                 }
  259 
  260                 switch (PSSR_SPEED_get(pssr)) {
  261                 case SPEED_1000:
  262                         mii->mii_media_active |= IFM_1000_T;
  263                         gtsr = PHY_READ(sc, MII_100T2SR);
  264                         if (gtsr & GTSR_MS_RES)
  265                                 mii->mii_media_active |= IFM_ETH_MASTER;
  266                         break;
  267 
  268                 case SPEED_100:
  269                         mii->mii_media_active |= IFM_100_TX;
  270                         break;
  271 
  272                 case SPEED_10:
  273                         mii->mii_media_active |= IFM_10_T;
  274                         break;
  275 
  276                 default:
  277                         mii->mii_media_active |= IFM_NONE;
  278                         mii->mii_media_status = 0;
  279                         return;
  280                 }
  281 
  282                 if (pssr & PSSR_DUPLEX)
  283                         mii->mii_media_active |= IFM_FDX;
  284         } else
  285                 mii->mii_media_active = ife->ifm_media;
  286 }

Cache object: b00b4c9ad5f7dc0107579163e37db158


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