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/qsphy.c

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    1 /*      OpenBSD: qsphy.c,v 1.6 2000/08/26 20:04:18 nate Exp */
    2 /*      NetBSD: qsphy.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 Quality Semiconductor's QS6612 ethernet 10/100 PHY
   72  * datasheet from www.qualitysemi.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/qsphyreg.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/qsphy.c 105135 2002-10-14 22:31:52Z alfred $";
   97 #endif
   98 
   99 static int qsphy_probe(device_t);
  100 static int qsphy_attach(device_t);
  101 
  102 static device_method_t qsphy_methods[] = {
  103         /* device interface */
  104         DEVMETHOD(device_probe,         qsphy_probe),
  105         DEVMETHOD(device_attach,        qsphy_attach),
  106         DEVMETHOD(device_detach,        mii_phy_detach),
  107         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
  108         { 0, 0 }
  109 };
  110 
  111 static devclass_t qsphy_devclass;
  112 
  113 static driver_t qsphy_driver = {
  114         "qsphy",
  115         qsphy_methods,
  116         sizeof(struct mii_softc)
  117 };
  118 
  119 DRIVER_MODULE(qsphy, miibus, qsphy_driver, qsphy_devclass, 0, 0);
  120 
  121 static int      qsphy_service(struct mii_softc *, struct mii_data *, int);
  122 static void     qsphy_reset(struct mii_softc *);
  123 static void     qsphy_status(struct mii_softc *);
  124 
  125 static int
  126 qsphy_probe(dev)
  127         device_t                dev;
  128 {
  129         struct mii_attach_args *ma;
  130 
  131         ma = device_get_ivars(dev);
  132 
  133         if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_QUALSEMI &&
  134             MII_MODEL(ma->mii_id2) == MII_MODEL_QUALSEMI_QS6612) {
  135                 device_set_desc(dev, MII_STR_QUALSEMI_QS6612);
  136         } else 
  137                 return (ENXIO);
  138 
  139         return (0);
  140 }
  141 
  142 static int
  143 qsphy_attach(dev)
  144         device_t                dev;
  145 {
  146         struct mii_softc *sc;
  147         struct mii_attach_args *ma;
  148         struct mii_data *mii;
  149 
  150         sc = device_get_softc(dev);
  151         ma = device_get_ivars(dev);
  152         sc->mii_dev = device_get_parent(dev);
  153         mii = device_get_softc(sc->mii_dev);
  154         LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
  155 
  156         sc->mii_inst = mii->mii_instance;
  157         sc->mii_phy = ma->mii_phyno;
  158         sc->mii_service = qsphy_service;
  159         sc->mii_pdata = mii;
  160         sc->mii_flags |= MIIF_NOISOLATE;
  161 
  162         qsphy_reset(sc);
  163 
  164         mii->mii_instance++;
  165 
  166         sc->mii_capabilities =
  167             PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
  168         device_printf(dev, " ");
  169         mii_add_media(sc);
  170         printf("\n");
  171 
  172         MIIBUS_MEDIAINIT(sc->mii_dev);
  173         return (0);
  174 }
  175 
  176 static int
  177 qsphy_service(sc, mii, cmd)
  178         struct mii_softc *sc;
  179         struct mii_data *mii;
  180         int cmd;
  181 {
  182         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  183         int reg;
  184 
  185         /*
  186          * If we're not selected, then do nothing, just isolate, if
  187          * changing media.
  188          */
  189         if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
  190                 if (cmd == MII_MEDIACHG) {
  191                         reg = PHY_READ(sc, MII_BMCR);
  192                         PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
  193                 }
  194 
  195                 return (0);
  196         }
  197 
  198         switch (cmd) {
  199         case MII_POLLSTAT:
  200                 break;
  201 
  202         case MII_MEDIACHG:
  203                 /*
  204                  * If the interface is not up, don't do anything.
  205                  */
  206                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  207                         break;
  208 
  209                 switch (IFM_SUBTYPE(ife->ifm_media)) {
  210                 case IFM_AUTO:
  211                         /*
  212                          * If we're already in auto mode, just return.
  213                          */
  214                         if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN)
  215                                 return (0);
  216 
  217                         (void) mii_phy_auto(sc);
  218                         break;
  219 
  220                 default:
  221                         /*
  222                          * BMCR data is stored in the ifmedia entry.
  223                          */
  224                         PHY_WRITE(sc, MII_ANAR,
  225                             mii_anar(ife->ifm_media));
  226                         PHY_WRITE(sc, MII_BMCR, ife->ifm_data);
  227                 }
  228                 break;
  229 
  230         case MII_TICK:
  231                 /*
  232                  * Is the interface even up?
  233                  */
  234                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  235                         return (0);
  236 
  237                 /*
  238                  * Only used for autonegotiation.
  239                  */
  240                 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
  241                         break;
  242 
  243                 /*
  244                  * This PHY's autonegotiation doesn't need to be kicked.
  245                  */
  246                 break;
  247         }
  248 
  249         /* Update the media status. */
  250         qsphy_status(sc);
  251 
  252         /* Callback if something changed. */
  253         mii_phy_update(sc, cmd);
  254         return (0);
  255 }
  256 
  257 static void
  258 qsphy_status(sc)
  259         struct mii_softc *sc;
  260 {
  261         struct mii_data *mii = sc->mii_pdata;
  262         int bmsr, bmcr, pctl;
  263 
  264         mii->mii_media_status = IFM_AVALID;
  265         mii->mii_media_active = IFM_ETHER;
  266 
  267         bmsr = PHY_READ(sc, MII_BMSR) |
  268             PHY_READ(sc, MII_BMSR);
  269         if (bmsr & BMSR_LINK)
  270                 mii->mii_media_status |= IFM_ACTIVE;
  271 
  272         bmcr = PHY_READ(sc, MII_BMCR);
  273         if (bmcr & BMCR_ISO) {
  274                 mii->mii_media_active |= IFM_NONE;
  275                 mii->mii_media_status = 0;
  276                 return;
  277         }
  278 
  279         if (bmcr & BMCR_LOOP)
  280                 mii->mii_media_active |= IFM_LOOP;
  281 
  282         pctl = PHY_READ(sc, MII_QSPHY_PCTL);
  283         switch (pctl & PCTL_OPMASK) {
  284         case PCTL_10_T:
  285                 mii->mii_media_active |= IFM_10_T;
  286                 break;
  287         case PCTL_10_T_FDX:
  288                 mii->mii_media_active |= IFM_10_T|IFM_FDX;
  289                 break;
  290         case PCTL_100_TX:
  291                 mii->mii_media_active |= IFM_100_TX;
  292                 break;
  293         case PCTL_100_TX_FDX:
  294                 mii->mii_media_active |= IFM_100_TX|IFM_FDX;
  295                 break;
  296         case PCTL_100_T4:
  297                 mii->mii_media_active |= IFM_100_T4;
  298                 break;
  299         case PCTL_AN:
  300                 mii->mii_media_active |= IFM_NONE;
  301                 break;
  302         default:
  303                 /* Erg... this shouldn't happen. */
  304                 mii->mii_media_active |= IFM_NONE;
  305                 break;
  306         }
  307 }
  308 
  309 static void
  310 qsphy_reset(sc)
  311         struct mii_softc *sc;
  312 {
  313 
  314         mii_phy_reset(sc);
  315         PHY_WRITE(sc, MII_QSPHY_IMASK, 0);
  316 }

Cache object: 35240b7bf913e07e967cf661fc5a1aed


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