lxtphy.c

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    1 /*      $NetBSD: lxtphy.c,v 1.33 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  * driver for Level One's LXT-970 ethernet 10/100 PHY
   71  * datasheet from www.level1.com
   72  */
   73 
   74 #include <sys/cdefs.h>
   75 __KERNEL_RCSID(0, "$NetBSD: lxtphy.c,v 1.33 2003/04/29 01:49:34 thorpej 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 #include <sys/errno.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/lxtphyreg.h>
   92 
   93 int     lxtphymatch(struct device *, struct cfdata *, void *);
   94 void    lxtphyattach(struct device *, struct device *, void *);
   95 
   96 CFATTACH_DECL(lxtphy, sizeof(struct mii_softc),
   97     lxtphymatch, lxtphyattach, mii_phy_detach, mii_phy_activate);
   98 
   99 int     lxtphy_service(struct mii_softc *, struct mii_data *, int);
  100 void    lxtphy_status(struct mii_softc *);
  101 void    lxtphy_reset(struct mii_softc *);
  102 
  103 static void lxtphy_set_tp(struct mii_softc *);
  104 static void lxtphy_set_fx(struct mii_softc *);
  105 
  106 const struct mii_phy_funcs lxtphy_funcs = {
  107         lxtphy_service, lxtphy_status, lxtphy_reset,
  108 };
  109 
  110 const struct mii_phy_funcs lxtphy971_funcs = {
  111         lxtphy_service, ukphy_status, lxtphy_reset,
  112 };
  113 
  114 const struct mii_phydesc lxtphys[] = {
  115         { MII_OUI_xxLEVEL1,             MII_MODEL_xxLEVEL1_LXT970,
  116           MII_STR_xxLEVEL1_LXT970 },
  117 
  118         { MII_OUI_LEVEL1,               MII_MODEL_LEVEL1_LXT971,
  119           MII_STR_LEVEL1_LXT971 },
  120 
  121         { 0,                            0,
  122           NULL },
  123 };
  124 
  125 int
  126 lxtphymatch(struct device *parent, struct cfdata *match, void *aux)
  127 {
  128         struct mii_attach_args *ma = aux;
  129 
  130         if (mii_phy_match(ma, lxtphys) != NULL)
  131                 return (10);
  132 
  133         return (0);
  134 }
  135 
  136 void
  137 lxtphyattach(struct device *parent, struct device *self, void *aux)
  138 {
  139         struct mii_softc *sc = (struct mii_softc *)self;
  140         struct mii_attach_args *ma = aux;
  141         struct mii_data *mii = ma->mii_data;
  142         const struct mii_phydesc *mpd;
  143 
  144         mpd = mii_phy_match(ma, lxtphys);
  145         aprint_naive(": Media interface\n");
  146         aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
  147 
  148         sc->mii_inst = mii->mii_instance;
  149         sc->mii_phy = ma->mii_phyno;
  150         if (mpd->mpd_model == MII_MODEL_LEVEL1_LXT971)
  151                 sc->mii_funcs = &lxtphy971_funcs;
  152         else
  153                 sc->mii_funcs = &lxtphy_funcs;
  154         sc->mii_pdata = mii;
  155         sc->mii_flags = ma->mii_flags;
  156         sc->mii_anegticks = 5;
  157 
  158         PHY_RESET(sc);
  159 
  160         sc->mii_capabilities =
  161             PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
  162         aprint_normal("%s: ", sc->mii_dev.dv_xname);
  163 
  164         if (sc->mii_flags & MIIF_HAVEFIBER) {
  165 #define ADD(m, c)       ifmedia_add(&mii->mii_media, (m), (c), NULL)
  166                 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, 0, sc->mii_inst),
  167                     MII_MEDIA_100_TX);
  168                 aprint_normal("100baseFX, ");
  169                 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, IFM_FDX, sc->mii_inst),
  170                     MII_MEDIA_100_TX_FDX);
  171                 aprint_normal("100baseFX-FDX, ");
  172 #undef ADD
  173         }
  174 
  175         if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
  176                 aprint_error("no media present");
  177         else
  178                 mii_phy_add_media(sc);
  179         aprint_normal("\n");
  180 }
  181 
  182 int
  183 lxtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
  184 {
  185         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  186         int reg;
  187 
  188         if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
  189                 return (ENXIO);
  190 
  191         switch (cmd) {
  192         case MII_POLLSTAT:
  193                 /*
  194                  * If we're not polling our PHY instance, just return.
  195                  */
  196                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  197                         return (0);
  198                 break;
  199 
  200         case MII_MEDIACHG:
  201                 /*
  202                  * If the media indicates a different PHY instance,
  203                  * isolate ourselves.
  204                  */
  205                 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
  206                         reg = PHY_READ(sc, MII_BMCR);
  207                         PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
  208                         return (0);
  209                 }
  210 
  211                 /*
  212                  * If the interface is not up, don't do anything.
  213                  */
  214                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  215                         break;
  216 
  217                 if (IFM_SUBTYPE(ife->ifm_media) == IFM_100_FX)
  218                         lxtphy_set_fx(sc);
  219                 else
  220                         lxtphy_set_tp(sc);
  221 
  222                 mii_phy_setmedia(sc);
  223                 break;
  224 
  225         case MII_TICK:
  226                 /*
  227                  * If we're not currently selected, just return.
  228                  */
  229                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  230                         return (0);
  231 
  232                 if (mii_phy_tick(sc) == EJUSTRETURN)
  233                         return (0);
  234                 break;
  235 
  236         case MII_DOWN:
  237                 mii_phy_down(sc);
  238                 return (0);
  239         }
  240 
  241         /* Update the media status. */
  242         mii_phy_status(sc);
  243 
  244         /* Callback if something changed. */
  245         mii_phy_update(sc, cmd);
  246         return (0);
  247 }
  248 
  249 void
  250 lxtphy_status(struct mii_softc *sc)
  251 {
  252         struct mii_data *mii = sc->mii_pdata;
  253         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  254         int bmcr, bmsr, csr;
  255 
  256         mii->mii_media_status = IFM_AVALID;
  257         mii->mii_media_active = IFM_ETHER;
  258 
  259         /*
  260          * Get link status from the CSR; we need to read the CSR
  261          * for media type anyhow, and the link status in the CSR
  262          * doens't latch, so fewer register reads are required.
  263          */
  264         csr = PHY_READ(sc, MII_LXTPHY_CSR);
  265         if (csr & CSR_LINK)
  266                 mii->mii_media_status |= IFM_ACTIVE;
  267 
  268         bmcr = PHY_READ(sc, MII_BMCR);
  269         if (bmcr & BMCR_ISO) {
  270                 mii->mii_media_active |= IFM_NONE;
  271                 mii->mii_media_status = 0;
  272                 return;
  273         }
  274 
  275         if (bmcr & BMCR_LOOP)
  276                 mii->mii_media_active |= IFM_LOOP;
  277 
  278         if (bmcr & BMCR_AUTOEN) {
  279                 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
  280                 if ((bmsr & BMSR_ACOMP) == 0) {
  281                         /* Erg, still trying, I guess... */
  282                         mii->mii_media_active |= IFM_NONE;
  283                         return;
  284                 }
  285                 if (csr & CSR_SPEED)
  286                         mii->mii_media_active |= IFM_100_TX;
  287                 else
  288                         mii->mii_media_active |= IFM_10_T;
  289                 if (csr & CSR_DUPLEX)
  290                         mii->mii_media_active |= IFM_FDX;
  291         } else
  292                 mii->mii_media_active = ife->ifm_media;
  293 }
  294 
  295 void
  296 lxtphy_reset(struct mii_softc *sc)
  297 {
  298 
  299         mii_phy_reset(sc);
  300         PHY_WRITE(sc, MII_LXTPHY_IER,
  301             PHY_READ(sc, MII_LXTPHY_IER) & ~IER_INTEN);
  302 }
  303 
  304 static void
  305 lxtphy_set_tp(struct mii_softc *sc)
  306 {
  307         int cfg;
  308 
  309         cfg = PHY_READ(sc, MII_LXTPHY_CONFIG);
  310         cfg &= ~CONFIG_100BASEFX;
  311         PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg);
  312 }
  313 
  314 static void
  315 lxtphy_set_fx(struct mii_softc *sc)
  316 {
  317         int cfg;
  318 
  319         cfg = PHY_READ(sc, MII_LXTPHY_CONFIG);
  320         cfg |= CONFIG_100BASEFX;
  321         PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg);
  322 }
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FreeBSD/Linux Kernel Cross Reference sys/dev/mii/lxtphy.c

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sys/dev/mii/lxtphy.c
