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/mii/icsphy.c

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    1 /*      $NetBSD: icsphy.c,v 1.33 2003/07/01 22:51:13 msaitoh 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  * driver for Integrated Circuit Systems' ICS1889-1893 ethernet 10/100 PHY
   71  * datasheet from www.icst.com
   72  */
   73 
   74 #include <sys/cdefs.h>
   75 __KERNEL_RCSID(0, "$NetBSD: icsphy.c,v 1.33 2003/07/01 22:51:13 msaitoh Exp $");
   76 
   77 #include <sys/param.h>
   78 #include <sys/systm.h>
   79 #include <sys/kernel.h>
   80 #include <sys/device.h>
   81 #include <sys/socket.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/icsphyreg.h>
   91 
   92 int     icsphymatch(struct device *, struct cfdata *, void *);
   93 void    icsphyattach(struct device *, struct device *, void *);
   94 
   95 CFATTACH_DECL(icsphy, sizeof(struct mii_softc),
   96     icsphymatch, icsphyattach, mii_phy_detach, mii_phy_activate);
   97 
   98 int     icsphy_service(struct mii_softc *, struct mii_data *, int);
   99 void    icsphy_status(struct mii_softc *);
  100 void    icsphy_reset(struct mii_softc *);
  101 
  102 const struct mii_phy_funcs icsphy_funcs = {
  103         icsphy_service, icsphy_status, icsphy_reset,
  104 };
  105 
  106 const struct mii_phydesc icsphys[] = {
  107         { MII_OUI_ICS,          MII_MODEL_ICS_1889,
  108           MII_STR_ICS_1889 },
  109 
  110         { MII_OUI_ICS,          MII_MODEL_ICS_1890,
  111           MII_STR_ICS_1890 },
  112 
  113         { MII_OUI_ICS,          MII_MODEL_ICS_1892,
  114           MII_STR_ICS_1892 },
  115 
  116         { MII_OUI_ICS,          MII_MODEL_ICS_1893,
  117           MII_STR_ICS_1893 },
  118 
  119         { 0,                    0,
  120           NULL },
  121 };
  122 
  123 int
  124 icsphymatch(struct device *parent, struct cfdata *match, void *aux)
  125 {
  126         struct mii_attach_args *ma = aux;
  127 
  128         if (mii_phy_match(ma, icsphys) != NULL)
  129                 return (10);
  130 
  131         return (0);
  132 }
  133 
  134 void
  135 icsphyattach(struct device *parent, struct device *self, void *aux)
  136 {
  137         struct mii_softc *sc = (struct mii_softc *)self;
  138         struct mii_attach_args *ma = aux;
  139         struct mii_data *mii = ma->mii_data;
  140         const struct mii_phydesc *mpd;
  141 
  142         mpd = mii_phy_match(ma, icsphys);
  143         aprint_naive(": Media interface\n");
  144         aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
  145 
  146         sc->mii_mpd_model = MII_MODEL(ma->mii_id2);
  147         sc->mii_inst = mii->mii_instance;
  148         sc->mii_phy = ma->mii_phyno;
  149         sc->mii_funcs = &icsphy_funcs;
  150         sc->mii_pdata = mii;
  151         sc->mii_flags = ma->mii_flags;
  152         sc->mii_anegticks = 5;
  153 
  154         PHY_RESET(sc);
  155 
  156         sc->mii_capabilities =
  157             PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
  158         aprint_normal("%s: ", sc->mii_dev.dv_xname);
  159         if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
  160                 aprint_error("no media present");
  161         else
  162                 mii_phy_add_media(sc);
  163         aprint_normal("\n");
  164 }
  165 
  166 int
  167 icsphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
  168 {
  169         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  170         int reg;
  171 
  172         if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
  173                 return (ENXIO);
  174 
  175         switch (cmd) {
  176         case MII_POLLSTAT:
  177                 /*
  178                  * If we're not polling our PHY instance, just return.
  179                  */
  180                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  181                         return (0);
  182                 break;
  183 
  184         case MII_MEDIACHG:
  185                 /*
  186                  * If the media indicates a different PHY instance,
  187                  * isolate ourselves.
  188                  */
  189                 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
  190                         reg = PHY_READ(sc, MII_BMCR);
  191                         PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
  192                         return (0);
  193                 }
  194 
  195                 /*
  196                  * If the interface is not up, don't do anything.
  197                  */
  198                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  199                         break;
  200 
  201                 mii_phy_setmedia(sc);
  202                 break;
  203 
  204         case MII_TICK:
  205                 /*
  206                  * If we're not currently selected, just return.
  207                  */
  208                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  209                         return (0);
  210 
  211                 if (mii_phy_tick(sc) == EJUSTRETURN)
  212                         return (0);
  213                 break;
  214 
  215         case MII_DOWN:
  216                 mii_phy_down(sc);
  217                 return (0);
  218         }
  219 
  220         /* Update the media status. */
  221         mii_phy_status(sc);
  222 
  223         /* Callback if something changed. */
  224         mii_phy_update(sc, cmd);
  225         return (0);
  226 }
  227 
  228 void
  229 icsphy_status(struct mii_softc *sc)
  230 {
  231         struct mii_data *mii = sc->mii_pdata;
  232         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  233         int bmcr, qpr;
  234 
  235         mii->mii_media_status = IFM_AVALID;
  236         mii->mii_media_active = IFM_ETHER;
  237 
  238         /*
  239          * Don't get link from the BMSR.  It's available in the QPR,
  240          * and we have to read it twice to unlatch it anyhow.  This
  241          * gives us fewer register reads.
  242          */
  243         qpr = PHY_READ(sc, MII_ICSPHY_QPR);             /* unlatch */
  244         qpr = PHY_READ(sc, MII_ICSPHY_QPR);             /* real value */
  245 
  246         if (qpr & QPR_LINK)
  247                 mii->mii_media_status |= IFM_ACTIVE;
  248 
  249         bmcr = PHY_READ(sc, MII_BMCR);
  250         if (bmcr & BMCR_ISO) {
  251                 mii->mii_media_active |= IFM_NONE;
  252                 mii->mii_media_status = 0;
  253                 return;
  254         }
  255 
  256         if (bmcr & BMCR_LOOP)
  257                 mii->mii_media_active |= IFM_LOOP;
  258 
  259         if (bmcr & BMCR_AUTOEN) {
  260                 if ((qpr & QPR_ACOMP) == 0) {
  261                         /* Erg, still trying, I guess... */
  262                         mii->mii_media_active |= IFM_NONE;
  263                         return;
  264                 }
  265                 if (qpr & QPR_SPEED)
  266                         mii->mii_media_active |= IFM_100_TX;
  267                 else
  268                         mii->mii_media_active |= IFM_10_T;
  269                 if (qpr & QPR_FDX)
  270                         mii->mii_media_active |= IFM_FDX;
  271         } else
  272                 mii->mii_media_active = ife->ifm_media;
  273 }
  274 
  275 void
  276 icsphy_reset(sc)
  277         struct mii_softc *sc;
  278 {
  279 
  280         mii_phy_reset(sc);
  281         /* set powerdown feature */
  282         switch (sc->mii_mpd_model) {
  283                 case MII_MODEL_ICS_1890:
  284                 case MII_MODEL_ICS_1893:
  285                         PHY_WRITE(sc, MII_ICSPHY_ECR2, ECR2_100AUTOPWRDN);
  286                         break;
  287                 case MII_MODEL_ICS_1892:
  288                         PHY_WRITE(sc, MII_ICSPHY_ECR2,
  289                             ECR2_10AUTOPWRDN|ECR2_100AUTOPWRDN);
  290                         break;
  291                 default:
  292                         /* 1889 have no ECR2 */
  293                         break;
  294         }
  295         /*
  296          * There is no description that the reset do auto-negotiation in the
  297          * data sheet.
  298          */
  299         PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_STARTNEG|BMCR_FDX);
  300 }

Cache object: ffc515a6cd299a4b48c85e2e0cb52819


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