glxtphy.c

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    1 /*      $NetBSD: glxtphy.c,v 1.9 2003/04/29 01:49:33 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 Level One LXT-1000 10/100/1000 PHY.
   71  */
   72 
   73 #include <sys/cdefs.h>
   74 __KERNEL_RCSID(0, "$NetBSD: glxtphy.c,v 1.9 2003/04/29 01:49:33 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/glxtphyreg.h>
   91 
   92 int     glxtphymatch(struct device *, struct cfdata *, void *);
   93 void    glxtphyattach(struct device *, struct device *, void *);
   94 
   95 CFATTACH_DECL(glxtphy, sizeof(struct mii_softc),
   96     glxtphymatch, glxtphyattach, mii_phy_detach, mii_phy_activate);
   97 
   98 int     glxtphy_service(struct mii_softc *, struct mii_data *, int);
   99 void    glxtphy_status(struct mii_softc *);
  100 
  101 const struct mii_phy_funcs glxtphy_funcs = {
  102         glxtphy_service, glxtphy_status, mii_phy_reset,
  103 };
  104 
  105 const struct mii_phydesc glxtphys[] = {
  106         { MII_OUI_LEVEL1,               MII_MODEL_LEVEL1_LXT1000_OLD,
  107           MII_STR_LEVEL1_LXT1000_OLD },
  108 
  109         { MII_OUI_LEVEL1,               MII_MODEL_LEVEL1_LXT1000_OLD,
  110           MII_STR_LEVEL1_LXT1000_OLD },
  111 
  112         { 0,                            0,
  113           NULL },
  114 };
  115 
  116 int
  117 glxtphymatch(struct device *parent, struct cfdata *match, void *aux)
  118 {
  119         struct mii_attach_args *ma = aux;
  120 
  121         if (mii_phy_match(ma, glxtphys) != NULL)
  122                 return (10);
  123 
  124         return (0);
  125 }
  126 
  127 void
  128 glxtphyattach(struct device *parent, struct device *self, void *aux)
  129 {
  130         struct mii_softc *sc = (struct mii_softc *)self;
  131         struct mii_attach_args *ma = aux;
  132         struct mii_data *mii = ma->mii_data;
  133         const struct mii_phydesc *mpd;
  134 
  135         mpd = mii_phy_match(ma, glxtphys);
  136         aprint_naive(": Media interface\n");
  137         aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
  138 
  139         sc->mii_inst = mii->mii_instance;
  140         sc->mii_phy = ma->mii_phyno;
  141         sc->mii_funcs = &glxtphy_funcs;
  142         sc->mii_pdata = mii;
  143         sc->mii_flags = ma->mii_flags;
  144         sc->mii_anegticks = 5;
  145 
  146         PHY_RESET(sc);
  147 
  148         sc->mii_capabilities =
  149             PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
  150         if (sc->mii_capabilities & BMSR_EXTSTAT)
  151                 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
  152 
  153         aprint_normal("%s: ", sc->mii_dev.dv_xname);
  154         if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 &&
  155             (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0)
  156                 aprint_error("no media present");
  157         else
  158                 mii_phy_add_media(sc);
  159         aprint_normal("\n");
  160 }
  161 
  162 int
  163 glxtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
  164 {
  165         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  166         int reg;
  167 
  168         switch (cmd) {
  169         case MII_POLLSTAT:
  170                 /*
  171                  * If we're not polling our PHY instance, just return.
  172                  */
  173                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  174                         return (0);
  175                 break;
  176 
  177         case MII_MEDIACHG:
  178                 /*
  179                  * If the media indicates a different PHY instance,
  180                  * isolate ourselves.
  181                  */
  182                 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
  183                         reg = PHY_READ(sc, MII_BMCR);
  184                         PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
  185                         return (0);
  186                 }
  187 
  188                 /*
  189                  * If the interface is not up, don't do anything.
  190                  */
  191                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  192                         break;
  193 
  194                 mii_phy_setmedia(sc);
  195                 break;
  196 
  197         case MII_TICK:
  198                 /*
  199                  * If we're not currently selected, just return.
  200                  */
  201                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  202                         return (0);
  203 
  204                 if (mii_phy_tick(sc) == EJUSTRETURN)
  205                         return (0);
  206                 break;
  207 
  208         case MII_DOWN:
  209                 mii_phy_down(sc);
  210                 return (0);
  211         }
  212 
  213         /* Update the media status. */
  214         mii_phy_status(sc);
  215 
  216         /* Callback if something changed. */
  217         mii_phy_update(sc, cmd);
  218         return (0);
  219 }
  220 
  221 void
  222 glxtphy_status(struct mii_softc *sc)
  223 {
  224         struct mii_data *mii = sc->mii_pdata;
  225         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  226         int bmcr, qsr, gtsr;
  227 
  228         mii->mii_media_status = IFM_AVALID;
  229         mii->mii_media_active = IFM_ETHER;
  230 
  231         qsr = PHY_READ(sc, MII_GLXTPHY_QSR);
  232 
  233         if (qsr & QSR_LINK)
  234                 mii->mii_media_status |= IFM_ACTIVE;
  235 
  236         bmcr = PHY_READ(sc, MII_BMCR);
  237         if (bmcr & BMCR_ISO) {
  238                 mii->mii_media_active |= IFM_NONE;
  239                 mii->mii_media_status = 0;
  240                 return;
  241         }
  242 
  243         if (bmcr & BMCR_LOOP)
  244                 mii->mii_media_active |= IFM_LOOP;
  245 
  246         if (bmcr & BMCR_AUTOEN) {
  247                 /*
  248                  * The media status bits are only valid of autonegotiation
  249                  * has completed (or it's disabled).
  250                  */
  251                 if ((qsr & QSR_ACOMP) == 0) {
  252                         /* Erg, still trying, I guess... */
  253                         mii->mii_media_active |= IFM_NONE;
  254                         return;
  255                 }
  256 
  257                 switch (QSR_SPEED_get(qsr)) {
  258                 case SPEED_1000:
  259                         mii->mii_media_active |= IFM_1000_T;
  260                         gtsr = PHY_READ(sc, MII_100T2SR);
  261                         if (gtsr & GTSR_MS_RES)
  262                                 mii->mii_media_active |= IFM_ETH_MASTER;
  263                         break;
  264 
  265                 case SPEED_100:
  266                         mii->mii_media_active |= IFM_100_TX;
  267                         break;
  268 
  269                 case SPEED_10_MII:
  270                 case SPEED_10_SERIAL:
  271                         mii->mii_media_active |= IFM_10_T;
  272                         break;
  273                 }
  274 
  275                 if (qsr & QSR_DUPLEX)
  276                         mii->mii_media_active |= IFM_FDX;
  277         } else
  278                 mii->mii_media_active = ife->ifm_media;
  279 }
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FreeBSD/Linux Kernel Cross Reference sys/dev/mii/glxtphy.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/mii/glxtphy.c
