tqphy.c

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    1 /*      $NetBSD: tqphy.c,v 1.23 2003/04/29 01:49:34 thorpej Exp $       */
    2 
    3 /*
    4  * Copyright (c) 1998, 1999, 2000 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  * TDK TSC78Q2120 PHY driver
   71  *
   72  * Documentation available at http://www.tsc.tdk.com/lan/78Q2120.pdf .
   73  */
   74 
   75 #include <sys/cdefs.h>
   76 __KERNEL_RCSID(0, "$NetBSD: tqphy.c,v 1.23 2003/04/29 01:49:34 thorpej Exp $");
   77 
   78 #include <sys/param.h>
   79 #include <sys/systm.h>
   80 #include <sys/kernel.h>
   81 #include <sys/device.h>
   82 #include <sys/socket.h>
   83 
   84 #include <net/if.h>
   85 #include <net/if_media.h>
   86 
   87 #include <dev/mii/mii.h>
   88 #include <dev/mii/miivar.h>
   89 #include <dev/mii/miidevs.h>
   90 
   91 #include <dev/mii/tqphyreg.h>
   92 
   93 int     tqphymatch(struct device *, struct cfdata *, void *);
   94 void    tqphyattach(struct device *, struct device *, void *);
   95 
   96 CFATTACH_DECL(tqphy, sizeof(struct mii_softc),
   97     tqphymatch, tqphyattach, mii_phy_detach, mii_phy_activate);
   98 
   99 int     tqphy_service(struct mii_softc *, struct mii_data *, int);
  100 void    tqphy_status(struct mii_softc *);
  101 
  102 const struct mii_phy_funcs tqphy_funcs = {
  103         tqphy_service, tqphy_status, mii_phy_reset,
  104 };
  105 
  106 const struct mii_phydesc tqphys[] = {
  107         { MII_OUI_xxTSC,                MII_MODEL_xxTSC_78Q2120,
  108           MII_STR_xxTSC_78Q2120 },
  109 #if 0
  110         { MII_OUI_xxTSC,                MII_MODEL_TSC_78Q2121,
  111           MII_STR_TSC_78Q2121 },
  112 #endif
  113         { 0,                            0,
  114           NULL },
  115 };
  116 
  117 int
  118 tqphymatch(struct device *parent, struct cfdata *match, void *aux)
  119 {
  120         struct mii_attach_args *ma = aux;
  121 
  122         if (mii_phy_match(ma, tqphys) != NULL) {
  123                 /* The DIAG register is unreliable on early revisions. */
  124                 if (MII_MODEL(ma->mii_id2) == MII_MODEL_xxTSC_78Q2120 &&
  125                     MII_REV(ma->mii_id2) <= 3)
  126                         return (0);
  127                 return (10);
  128         }
  129 
  130         return (0);
  131 }
  132 
  133 void
  134 tqphyattach(struct device *parent, struct device *self, void *aux)
  135 {
  136         struct mii_softc *sc = (struct mii_softc *)self;
  137         struct mii_attach_args *ma = aux;
  138         struct mii_data *mii = ma->mii_data;
  139         const struct mii_phydesc *mpd;
  140 
  141         mpd = mii_phy_match(ma, tqphys);
  142         aprint_naive(": Media interface\n");
  143         aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
  144 
  145         sc->mii_inst = mii->mii_instance;
  146         sc->mii_phy = ma->mii_phyno;
  147         sc->mii_funcs = &tqphy_funcs;
  148         sc->mii_pdata = mii;
  149         sc->mii_flags = ma->mii_flags;
  150         sc->mii_anegticks = 5;
  151 
  152         /*
  153          * Apparently, we can't do loopback on this PHY.
  154          */
  155         sc->mii_flags |= MIIF_NOLOOP;
  156 
  157         PHY_RESET(sc);
  158 
  159         sc->mii_capabilities =
  160             PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
  161         aprint_normal("%s: ", sc->mii_dev.dv_xname);
  162         if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
  163                 aprint_error("no media present");
  164         else
  165                 mii_phy_add_media(sc);
  166         aprint_normal("\n");
  167 }
  168 
  169 int
  170 tqphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
  171 {
  172         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  173         int reg;
  174 
  175         if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
  176                 return (ENXIO);
  177 
  178         switch (cmd) {
  179         case MII_POLLSTAT:
  180                 /*
  181                  * If we're not polling our PHY instance, just return.
  182                  */
  183                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  184                         return (0);
  185                 break;
  186 
  187         case MII_MEDIACHG:
  188                 /*
  189                  * If the media indicates a different PHY instance,
  190                  * isolate ourselves.
  191                  */
  192                 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
  193                         reg = PHY_READ(sc, MII_BMCR);
  194                         PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
  195                         return (0);
  196                 }
  197 
  198                 /*
  199                  * If the interface is not up, don't do anything.
  200                  */
  201                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  202                         break;
  203 
  204                 mii_phy_setmedia(sc);
  205                 break;
  206 
  207         case MII_TICK:
  208                 /*
  209                  * If we're not currently selected, just return.
  210                  */
  211                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  212                         return (0);
  213 
  214                 if (mii_phy_tick(sc) == EJUSTRETURN)
  215                         return (0);
  216                 break;
  217 
  218         case MII_DOWN:
  219                 mii_phy_down(sc);
  220                 return (0);
  221         }
  222 
  223         /* Update the media status. */
  224         mii_phy_status(sc);
  225 
  226         /* Callback if something changed. */
  227         mii_phy_update(sc, cmd);
  228         return (0);
  229 }
  230 
  231 void
  232 tqphy_status(struct mii_softc *sc)
  233 {
  234         struct mii_data *mii = sc->mii_pdata;
  235         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  236         int bmsr, bmcr, diag;
  237 
  238         mii->mii_media_status = IFM_AVALID;
  239         mii->mii_media_active = IFM_ETHER;
  240 
  241         bmsr = PHY_READ(sc, MII_BMSR) |
  242             PHY_READ(sc, MII_BMSR);
  243         if (bmsr & BMSR_LINK)
  244                 mii->mii_media_status |= IFM_ACTIVE;
  245  
  246         bmcr = PHY_READ(sc, MII_BMCR);
  247         if (bmcr & BMCR_ISO) {
  248                 mii->mii_media_active |= IFM_NONE;
  249                 mii->mii_media_status = 0;
  250                 return;
  251         }
  252  
  253         if (bmcr & BMCR_LOOP)
  254                 mii->mii_media_active |= IFM_LOOP;
  255  
  256         if (bmcr & BMCR_AUTOEN) {
  257                 if ((bmsr & BMSR_ACOMP) == 0) { 
  258                         /* Erg, still trying, I guess... */
  259                         mii->mii_media_active |= IFM_NONE;
  260                         return;
  261                 }
  262                 diag = PHY_READ(sc, MII_TQPHY_DIAG);
  263                 if (diag & DIAG_RATE)
  264                         mii->mii_media_active |= IFM_100_TX;
  265                 else
  266                         mii->mii_media_active |= IFM_10_T;
  267                 if (diag & DIAG_DPLX)
  268                         mii->mii_media_active |= IFM_FDX;
  269         } else 
  270                 mii->mii_media_active = ife->ifm_media;
  271 }
Cache object: 2944ede8286cec9bd0f8102caf1e9b59
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FreeBSD/Linux Kernel Cross Reference sys/dev/mii/tqphy.c

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