lxtphy.c

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    1 /*      OpenBSD: lxtphy.c,v 1.5 2000/08/26 20:04:17 nate Exp    */
    2 /*      NetBSD: lxtphy.c,v 1.19 2000/02/02 23:34:57 thorpej Exp         */
    3 
    4 /*-
    5  * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
    6  * All rights reserved.
    7  *
    8  * This code is derived from software contributed to The NetBSD Foundation
    9  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
   10  * NASA Ames Research Center.
   11  *
   12  * Redistribution and use in source and binary forms, with or without
   13  * modification, are permitted provided that the following conditions
   14  * are met:
   15  * 1. Redistributions of source code must retain the above copyright
   16  *    notice, this list of conditions and the following disclaimer.
   17  * 2. Redistributions in binary form must reproduce the above copyright
   18  *    notice, this list of conditions and the following disclaimer in the
   19  *    documentation and/or other materials provided with the distribution.
   20  * 3. All advertising materials mentioning features or use of this software
   21  *    must display the following acknowledgement:
   22  *      This product includes software developed by the NetBSD
   23  *      Foundation, Inc. and its contributors.
   24  * 4. Neither the name of The NetBSD Foundation nor the names of its
   25  *    contributors may be used to endorse or promote products derived
   26  *    from this software without specific prior written permission.
   27  *
   28  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   29  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   30  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   31  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   32  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   33  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   34  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   35  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   36  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   37  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   38  * POSSIBILITY OF SUCH DAMAGE.
   39  */
   40  
   41 /*
   42  * Copyright (c) 1997 Manuel Bouyer.  All rights reserved.
   43  *
   44  * Redistribution and use in source and binary forms, with or without
   45  * modification, are permitted provided that the following conditions
   46  * are met:
   47  * 1. Redistributions of source code must retain the above copyright
   48  *    notice, this list of conditions and the following disclaimer.
   49  * 2. Redistributions in binary form must reproduce the above copyright
   50  *    notice, this list of conditions and the following disclaimer in the
   51  *    documentation and/or other materials provided with the distribution.
   52  * 3. All advertising materials mentioning features or use of this software
   53  *    must display the following acknowledgement:
   54  *      This product includes software developed by Manuel Bouyer.
   55  * 4. The name of the author may not be used to endorse or promote products
   56  *    derived from this software without specific prior written permission.
   57  *
   58  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   59  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   60  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   61  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   62  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   63  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   64  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   65  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   66  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   67  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   68  */
   69 
   70 /*
   71  * driver for Level One's LXT-970 ethernet 10/100 PHY
   72  * datasheet from www.level1.com
   73  */
   74 
   75 #include <sys/param.h>
   76 #include <sys/systm.h>
   77 #include <sys/kernel.h>
   78 #include <sys/socket.h>
   79 #include <sys/errno.h>
   80 #include <sys/module.h>
   81 #include <sys/bus.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/lxtphyreg.h>
   91 
   92 #include "miibus_if.h"
   93 
   94 #if !defined(lint)
   95 static const char rcsid[] =
   96   "$FreeBSD: releng/5.0/sys/dev/mii/lxtphy.c 105135 2002-10-14 22:31:52Z alfred $";
   97 #endif
   98 
   99 static int lxtphy_probe(device_t);
  100 static int lxtphy_attach(device_t);
  101 
  102 static device_method_t lxtphy_methods[] = {
  103         /* device interface */
  104         DEVMETHOD(device_probe,         lxtphy_probe),
  105         DEVMETHOD(device_attach,        lxtphy_attach),
  106         DEVMETHOD(device_detach,        mii_phy_detach),
  107         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
  108         { 0, 0 }
  109 };
  110 
  111 static devclass_t lxtphy_devclass;
  112 
  113 static driver_t lxtphy_driver = {
  114         "lxtphy",
  115         lxtphy_methods,
  116         sizeof(struct mii_softc)
  117 };
  118 
  119 DRIVER_MODULE(lxtphy, miibus, lxtphy_driver, lxtphy_devclass, 0, 0);
  120 
  121 static int      lxtphy_service(struct mii_softc *, struct mii_data *, int);
  122 static void     lxtphy_status(struct mii_softc *);
  123 static void     lxtphy_set_tp(struct mii_softc *);
  124 static void     lxtphy_set_fx(struct mii_softc *);
  125 
  126 static int
  127 lxtphy_probe(dev)
  128         device_t                dev;
  129 {
  130         struct mii_attach_args *ma;
  131 
  132         ma = device_get_ivars(dev);
  133 
  134         if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxLEVEL1 &&
  135             MII_MODEL(ma->mii_id2) == MII_MODEL_xxLEVEL1_LXT970) {
  136                 device_set_desc(dev, MII_STR_xxLEVEL1_LXT970);
  137         } else
  138                 return (ENXIO);
  139 
  140         return (0);
  141 }
  142 
  143 static int
  144 lxtphy_attach(dev)
  145         device_t                dev;
  146 {
  147         struct mii_softc *sc;
  148         struct mii_attach_args *ma;
  149         struct mii_data *mii;
  150 
  151         sc = device_get_softc(dev);
  152         ma = device_get_ivars(dev);
  153         sc->mii_dev = device_get_parent(dev);
  154         mii = device_get_softc(sc->mii_dev);
  155         LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
  156 
  157         sc->mii_inst = mii->mii_instance;
  158         sc->mii_phy = ma->mii_phyno;
  159         sc->mii_service = lxtphy_service;
  160         sc->mii_pdata = mii;
  161         sc->mii_flags |= MIIF_NOISOLATE;
  162 
  163         mii_phy_reset(sc);
  164 
  165         mii->mii_instance++;
  166 
  167         sc->mii_capabilities =
  168             PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
  169         device_printf(dev, " ");
  170 
  171 #define ADD(m, c)       ifmedia_add(&mii->mii_media, (m), (c), NULL)
  172         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
  173             BMCR_ISO);
  174         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, 0, sc->mii_inst),
  175             BMCR_S100);
  176         printf("100baseFX, ");
  177         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, IFM_FDX, sc->mii_inst),
  178             BMCR_S100|BMCR_FDX);
  179         printf("100baseFX-FDX, ");
  180 #undef ADD
  181 
  182         mii_add_media(sc);
  183         printf("\n");
  184 
  185         MIIBUS_MEDIAINIT(sc->mii_dev);
  186         return(0);
  187 }
  188 
  189 static int
  190 lxtphy_service(sc, mii, cmd)
  191         struct mii_softc *sc;
  192         struct mii_data *mii;
  193         int cmd;
  194 {
  195         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  196         int reg;
  197 
  198         switch (cmd) {
  199         case MII_POLLSTAT:
  200                 /*
  201                  * If we're not polling our PHY instance, just return.
  202                  */
  203                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  204                         return (0);
  205                 break;
  206 
  207         case MII_MEDIACHG:
  208                 /*
  209                  * If the media indicates a different PHY instance,
  210                  * isolate ourselves.
  211                  */
  212                 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
  213                         reg = PHY_READ(sc, MII_BMCR);
  214                         PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
  215                         return (0);
  216                 }
  217 
  218                 /*
  219                  * If the interface is not up, don't do anything.
  220                  */
  221                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  222                         break;
  223 
  224                 switch (IFM_SUBTYPE(ife->ifm_media)) {
  225                 case IFM_AUTO:
  226                         /*
  227                          * If we're already in auto mode, just return.
  228                          */
  229                         if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN)
  230                                 return (0);
  231 
  232                         lxtphy_set_tp(sc);
  233 
  234                         (void) mii_phy_auto(sc);
  235                         break;
  236                 case IFM_100_T4:
  237                         /*
  238                          * XXX Not supported as a manual setting right now.
  239                          */
  240                         return (EINVAL);
  241 
  242                 case IFM_100_FX:
  243                         lxtphy_set_fx(sc);
  244 
  245                 default:
  246                         /*
  247                          * BMCR data is stored in the ifmedia entry.
  248                          */
  249                         PHY_WRITE(sc, MII_ANAR,
  250                             mii_anar(ife->ifm_media));
  251                         PHY_WRITE(sc, MII_BMCR, ife->ifm_data);
  252                 }
  253                 break;
  254 
  255         case MII_TICK:
  256                 /*
  257                  * If we're not currently selected, just return.
  258                  */
  259                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  260                         return (0);
  261                 if (mii_phy_tick(sc) == EJUSTRETURN)
  262                         return (0);
  263                 break;
  264         }
  265 
  266         /* Update the media status. */
  267         lxtphy_status(sc);
  268 
  269         /* Callback if something changed. */
  270         mii_phy_update(sc, cmd);
  271         return (0);
  272 }
  273 
  274 static void
  275 lxtphy_status(sc)
  276         struct mii_softc *sc;
  277 {
  278         struct mii_data *mii = sc->mii_pdata;
  279         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  280         int bmcr, bmsr, csr;
  281 
  282         mii->mii_media_status = IFM_AVALID;
  283         mii->mii_media_active = IFM_ETHER;
  284 
  285         /*
  286          * Get link status from the CSR; we need to read the CSR
  287          * for media type anyhow, and the link status in the CSR
  288          * doens't latch, so fewer register reads are required.
  289          */
  290         csr = PHY_READ(sc, MII_LXTPHY_CSR);
  291         if (csr & CSR_LINK)
  292                 mii->mii_media_status |= IFM_ACTIVE;
  293 
  294         bmcr = PHY_READ(sc, MII_BMCR);
  295         if (bmcr & BMCR_ISO) {
  296                 mii->mii_media_active |= IFM_NONE;
  297                 mii->mii_media_status = 0;
  298                 return;
  299         }
  300 
  301         if (bmcr & BMCR_LOOP)
  302                 mii->mii_media_active |= IFM_LOOP;
  303 
  304         if (bmcr & BMCR_AUTOEN) {
  305                 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
  306                 if ((bmsr & BMSR_ACOMP) == 0) {
  307                         /* Erg, still trying, I guess... */
  308                         mii->mii_media_active |= IFM_NONE;
  309                         return;
  310                 }
  311                 if (csr & CSR_SPEED)
  312                         mii->mii_media_active |= IFM_100_TX;
  313                 else
  314                         mii->mii_media_active |= IFM_10_T;
  315                 if (csr & CSR_DUPLEX)
  316                         mii->mii_media_active |= IFM_FDX;
  317         } else
  318                 mii->mii_media_active = ife->ifm_media;
  319 }
  320 
  321 static void
  322 lxtphy_set_tp(sc)
  323         struct mii_softc *sc;
  324 {
  325         int cfg;
  326 
  327         cfg = PHY_READ(sc, MII_LXTPHY_CONFIG);
  328         cfg &= ~CONFIG_100BASEFX;
  329         PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg);
  330 }
  331 
  332 static void
  333 lxtphy_set_fx(sc)
  334         struct mii_softc *sc;
  335 {
  336         int cfg;
  337 
  338         cfg = PHY_READ(sc, MII_LXTPHY_CONFIG);
  339         cfg |= CONFIG_100BASEFX;
  340         PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg);
  341 }
  342
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FreeBSD/Linux Kernel Cross Reference sys/dev/mii/lxtphy.c

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