icsphy.c

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    1 /*      $NetBSD: icsphy.c,v 1.41 2006/11/16 21:24:07 christos 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  *
   20  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   30  * POSSIBILITY OF SUCH DAMAGE.
   31  */
   32 
   33 /*
   34  * Copyright (c) 1997 Manuel Bouyer.  All rights reserved.
   35  *
   36  * Redistribution and use in source and binary forms, with or without
   37  * modification, are permitted provided that the following conditions
   38  * are met:
   39  * 1. Redistributions of source code must retain the above copyright
   40  *    notice, this list of conditions and the following disclaimer.
   41  * 2. Redistributions in binary form must reproduce the above copyright
   42  *    notice, this list of conditions and the following disclaimer in the
   43  *    documentation and/or other materials provided with the distribution.
   44  *
   45  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   46  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   47  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   48  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   49  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   50  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   51  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   52  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   53  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   54  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   55  */
   56 
   57 #include <sys/cdefs.h>
   58 __FBSDID("$FreeBSD: releng/8.2/sys/dev/mii/icsphy.c 214909 2010-11-07 11:12:29Z marius $");
   59 
   60 /*
   61  * driver for Integrated Circuit Systems' ICS1889-1893 ethernet 10/100 PHY
   62  * datasheet from www.icst.com
   63  */
   64 
   65 #include <sys/param.h>
   66 #include <sys/systm.h>
   67 #include <sys/kernel.h>
   68 #include <sys/module.h>
   69 #include <sys/socket.h>
   70 #include <sys/bus.h>
   71 
   72 #include <net/if.h>
   73 #include <net/if_media.h>
   74 
   75 #include <dev/mii/mii.h>
   76 #include <dev/mii/miivar.h>
   77 #include "miidevs.h"
   78 
   79 #include <dev/mii/icsphyreg.h>
   80 
   81 #include "miibus_if.h"
   82 
   83 static int      icsphy_probe(device_t dev);
   84 static int      icsphy_attach(device_t dev);
   85 
   86 struct icsphy_softc {
   87         struct mii_softc mii_sc;
   88         int mii_model;
   89 };
   90 
   91 static device_method_t icsphy_methods[] = {
   92         /* device interface */
   93         DEVMETHOD(device_probe,         icsphy_probe),
   94         DEVMETHOD(device_attach,        icsphy_attach),
   95         DEVMETHOD(device_detach,        mii_phy_detach),
   96         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
   97         { 0, 0 }
   98 };
   99 
  100 static devclass_t icsphy_devclass;
  101 
  102 static driver_t icsphy_driver = {
  103         "icsphy",
  104         icsphy_methods,
  105         sizeof(struct icsphy_softc)
  106 };
  107 
  108 DRIVER_MODULE(icsphy, miibus, icsphy_driver, icsphy_devclass, 0, 0);
  109 
  110 static int      icsphy_service(struct mii_softc *, struct mii_data *, int);
  111 static void     icsphy_status(struct mii_softc *);
  112 static void     icsphy_reset(struct mii_softc *);
  113 
  114 static const struct mii_phydesc icsphys[] = {
  115         MII_PHY_DESC(xxICS, 1889),
  116         MII_PHY_DESC(xxICS, 1890),
  117         MII_PHY_DESC(xxICS, 1892),
  118         MII_PHY_DESC(xxICS, 1893),
  119         MII_PHY_END
  120 };
  121 
  122 static int
  123 icsphy_probe(device_t dev)
  124 {
  125 
  126         return (mii_phy_dev_probe(dev, icsphys, BUS_PROBE_DEFAULT));
  127 }
  128 
  129 static int
  130 icsphy_attach(device_t dev)
  131 {
  132         struct icsphy_softc *isc;
  133         struct mii_softc *sc;
  134         struct mii_attach_args *ma;
  135         struct mii_data *mii;
  136 
  137         isc = device_get_softc(dev);
  138         sc = &isc->mii_sc;
  139         ma = device_get_ivars(dev);
  140         sc->mii_dev = device_get_parent(dev);
  141         mii = ma->mii_data;
  142         LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
  143 
  144         sc->mii_flags = miibus_get_flags(dev);
  145         sc->mii_inst = mii->mii_instance++;
  146         sc->mii_phy = ma->mii_phyno;
  147         sc->mii_service = icsphy_service;
  148         sc->mii_pdata = mii;
  149 
  150         sc->mii_flags |= MIIF_NOISOLATE;
  151 
  152         ifmedia_add(&mii->mii_media,
  153             IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
  154             MII_MEDIA_100_TX, NULL);
  155 
  156         isc->mii_model = MII_MODEL(ma->mii_id2);
  157         icsphy_reset(sc);
  158 
  159         sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
  160         device_printf(dev, " ");
  161         mii_phy_add_media(sc);
  162         printf("\n");
  163 
  164         MIIBUS_MEDIAINIT(sc->mii_dev);
  165 
  166         return (0);
  167 }
  168 
  169 static int
  170 icsphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
  171 {
  172 
  173         switch (cmd) {
  174         case MII_POLLSTAT:
  175                 break;
  176 
  177         case MII_MEDIACHG:
  178                 /*
  179                  * If the interface is not up, don't do anything.
  180                  */
  181                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  182                         break;
  183 
  184                 mii_phy_setmedia(sc);
  185                 break;
  186 
  187         case MII_TICK:
  188                 if (mii_phy_tick(sc) == EJUSTRETURN)
  189                         return (0);
  190                 break;
  191         }
  192 
  193         /* Update the media status. */
  194         icsphy_status(sc);
  195 
  196         /* Callback if something changed. */
  197         mii_phy_update(sc, cmd);
  198         return (0);
  199 }
  200 
  201 static void
  202 icsphy_status(struct mii_softc *sc)
  203 {
  204         struct mii_data *mii = sc->mii_pdata;
  205         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  206         int bmcr, qpr;
  207 
  208         mii->mii_media_status = IFM_AVALID;
  209         mii->mii_media_active = IFM_ETHER;
  210 
  211         /*
  212          * Don't get link from the BMSR.  It's available in the QPR,
  213          * and we have to read it twice to unlatch it anyhow.  This
  214          * gives us fewer register reads.
  215          */
  216         qpr = PHY_READ(sc, MII_ICSPHY_QPR);             /* unlatch */
  217         qpr = PHY_READ(sc, MII_ICSPHY_QPR);             /* real value */
  218 
  219         if (qpr & QPR_LINK)
  220                 mii->mii_media_status |= IFM_ACTIVE;
  221 
  222         bmcr = PHY_READ(sc, MII_BMCR);
  223         if (bmcr & BMCR_ISO) {
  224                 mii->mii_media_active |= IFM_NONE;
  225                 mii->mii_media_status = 0;
  226                 return;
  227         }
  228 
  229         if (bmcr & BMCR_LOOP)
  230                 mii->mii_media_active |= IFM_LOOP;
  231 
  232         if (bmcr & BMCR_AUTOEN) {
  233                 if ((qpr & QPR_ACOMP) == 0) {
  234                         /* Erg, still trying, I guess... */
  235                         mii->mii_media_active |= IFM_NONE;
  236                         return;
  237                 }
  238                 if (qpr & QPR_SPEED)
  239                         mii->mii_media_active |= IFM_100_TX;
  240                 else
  241                         mii->mii_media_active |= IFM_10_T;
  242                 if (qpr & QPR_FDX)
  243                         mii->mii_media_active |= IFM_FDX;
  244                 else
  245                         mii->mii_media_active |= IFM_HDX;
  246         } else
  247                 mii->mii_media_active = ife->ifm_media;
  248 }
  249 
  250 static void
  251 icsphy_reset(struct mii_softc *sc)
  252 {
  253         struct icsphy_softc *isc = (struct icsphy_softc *)sc;
  254 
  255         mii_phy_reset(sc);
  256         /* set powerdown feature */
  257         switch (isc->mii_model) {
  258                 case MII_MODEL_xxICS_1890:
  259                 case MII_MODEL_xxICS_1893:
  260                         PHY_WRITE(sc, MII_ICSPHY_ECR2, ECR2_100AUTOPWRDN);
  261                         break;
  262                 case MII_MODEL_xxICS_1892:
  263                         PHY_WRITE(sc, MII_ICSPHY_ECR2,
  264                             ECR2_10AUTOPWRDN|ECR2_100AUTOPWRDN);
  265                         break;
  266                 default:
  267                         /* 1889 have no ECR2 */
  268                         break;
  269         }
  270         /*
  271          * There is no description that the reset do auto-negotiation in the
  272          * data sheet.
  273          */
  274         PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_STARTNEG|BMCR_FDX);
  275 }

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

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sys/dev/mii/icsphy.c