acphy.c

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    1 /*-
    2  * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
    3  * All rights reserved.
    4  *
    5  * This code is derived from software contributed to The NetBSD Foundation
    6  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
    7  * NASA Ames Research Center.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  * 3. All advertising materials mentioning features or use of this software
   18  *    must display the following acknowledgement:
   19  *      This product includes software developed by the NetBSD
   20  *      Foundation, Inc. and its contributors.
   21  * 4. Neither the name of The NetBSD Foundation nor the names of its
   22  *    contributors may be used to endorse or promote products derived
   23  *    from this software without specific prior written permission.
   24  *
   25  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   26  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   35  * POSSIBILITY OF SUCH DAMAGE.
   36  */
   37  
   38 /*
   39  * Copyright (c) 1997 Manuel Bouyer.  All rights reserved.
   40  *
   41  * Redistribution and use in source and binary forms, with or without
   42  * modification, are permitted provided that the following conditions
   43  * are met:
   44  * 1. Redistributions of source code must retain the above copyright
   45  *    notice, this list of conditions and the following disclaimer.
   46  * 2. Redistributions in binary form must reproduce the above copyright
   47  *    notice, this list of conditions and the following disclaimer in the
   48  *    documentation and/or other materials provided with the distribution.
   49  * 3. All advertising materials mentioning features or use of this software
   50  *    must display the following acknowledgement:
   51  *      This product includes software developed by Manuel Bouyer.
   52  * 4. The name of the author may not be used to endorse or promote products
   53  *    derived from this software without specific prior written permission.
   54  *
   55  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   56  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   57  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   58  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   59  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   60  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   61  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   62  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   63  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   64  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   65  */
   66 
   67 /*
   68  * Driver for Altima AC101 10/100 PHY
   69  */
   70 
   71 #include <sys/param.h>
   72 #include <sys/systm.h>
   73 #include <sys/kernel.h>
   74 #include <sys/socket.h>
   75 #include <sys/errno.h>
   76 #include <sys/module.h>
   77 #include <sys/bus.h>
   78 
   79 #include <net/if.h>
   80 #include <net/if_media.h>
   81 
   82 #include <dev/mii/mii.h>
   83 #include <dev/mii/miivar.h>
   84 #include <dev/mii/miidevs.h>
   85 
   86 #include <dev/mii/acphyreg.h>
   87 
   88 #include "miibus_if.h"
   89 
   90 #if !defined(lint)
   91 static const char rcsid[] =
   92   "$FreeBSD: releng/5.0/sys/dev/mii/acphy.c 105135 2002-10-14 22:31:52Z alfred $";
   93 #endif
   94 
   95 static int acphy_probe(device_t);
   96 static int acphy_attach(device_t);
   97 
   98 static device_method_t acphy_methods[] = {
   99         /* device interface */
  100         DEVMETHOD(device_probe,         acphy_probe),
  101         DEVMETHOD(device_attach,        acphy_attach),
  102         DEVMETHOD(device_detach,        mii_phy_detach),
  103         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
  104         { 0, 0 }
  105 };
  106 
  107 static devclass_t acphy_devclass;
  108 
  109 static driver_t acphy_driver = {
  110         "acphy",
  111         acphy_methods,
  112         sizeof(struct mii_softc)
  113 };
  114 
  115 DRIVER_MODULE(acphy, miibus, acphy_driver, acphy_devclass, 0, 0);
  116 
  117 static int      acphy_service(struct mii_softc *, struct mii_data *, int);
  118 static void     acphy_reset(struct mii_softc *);
  119 static void     acphy_status(struct mii_softc *);
  120 
  121 static int
  122 acphy_probe(dev)
  123         device_t                dev;
  124 {
  125         struct mii_attach_args *ma;
  126 
  127         ma = device_get_ivars(dev);
  128 
  129         if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxALTIMA &&
  130             MII_MODEL(ma->mii_id2) == MII_MODEL_xxALTIMA_AC101) {
  131                 device_set_desc(dev, MII_STR_xxALTIMA_AC101);
  132         } else 
  133                 return (ENXIO);
  134 
  135         return (0);
  136 }
  137 
  138 static int
  139 acphy_attach(dev)
  140         device_t                dev;
  141 {
  142         struct mii_softc *sc;
  143         struct mii_attach_args *ma;
  144         struct mii_data *mii;
  145 
  146         sc = device_get_softc(dev);
  147         ma = device_get_ivars(dev);
  148         sc->mii_dev = device_get_parent(dev);
  149         mii = device_get_softc(sc->mii_dev);
  150         LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
  151 
  152         sc->mii_inst = mii->mii_instance;
  153         sc->mii_phy = ma->mii_phyno;
  154         sc->mii_service = acphy_service;
  155         sc->mii_pdata = mii;
  156         sc->mii_flags |= MIIF_NOISOLATE;
  157 
  158         acphy_reset(sc);
  159 
  160         mii->mii_instance++;
  161 
  162         sc->mii_capabilities =
  163             PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
  164         device_printf(dev, " ");
  165         mii_add_media(sc);
  166         printf("\n");
  167 
  168         MIIBUS_MEDIAINIT(sc->mii_dev);
  169         return (0);
  170 }
  171 
  172 static int
  173 acphy_service(sc, mii, cmd)
  174         struct mii_softc *sc;
  175         struct mii_data *mii;
  176         int cmd;
  177 {
  178         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  179         int reg;
  180 
  181         /*
  182          * If we're not selected, then do nothing, just isolate and power
  183          * down, if changing media.
  184          */
  185         if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
  186                 if (cmd == MII_MEDIACHG) {
  187                         reg = PHY_READ(sc, MII_BMCR);
  188                         PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO | BMCR_PDOWN);
  189                 }
  190 
  191                 return (0);
  192         }
  193 
  194         switch (cmd) {
  195         case MII_POLLSTAT:
  196                 break;
  197 
  198         case MII_MEDIACHG:
  199                 /*
  200                  * If the interface is not up, don't do anything.
  201                  */
  202                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  203                         break;
  204 
  205                 /* Wake & deisolate up if necessary */
  206                 reg = PHY_READ(sc, MII_BMCR);
  207                 if (reg & (BMCR_ISO | BMCR_PDOWN)) 
  208                         PHY_WRITE(sc, MII_BMCR, reg & ~(BMCR_ISO | BMCR_PDOWN));
  209 
  210                 switch (IFM_SUBTYPE(ife->ifm_media)) {
  211                 case IFM_AUTO:
  212                         /*
  213                          * If we're already in auto mode, just return.
  214                          */
  215                         if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN)
  216                                 return (0);
  217 
  218                         (void) mii_phy_auto(sc);
  219                         break;
  220 
  221                 default:
  222                         /*
  223                          * BMCR data is stored in the ifmedia entry.
  224                          */
  225                         PHY_WRITE(sc, MII_ANAR,
  226                             mii_anar(ife->ifm_media));
  227                         PHY_WRITE(sc, MII_BMCR, ife->ifm_data);
  228                 }
  229                 break;
  230 
  231         case MII_TICK:
  232                 /*
  233                  * Is the interface even up?
  234                  */
  235                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  236                         return (0);
  237 
  238                 /*
  239                  * Only used for autonegotiation.
  240                  */
  241                 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
  242                         break;
  243 
  244                 /*
  245                  * This PHY's autonegotiation doesn't need to be kicked.
  246                  */
  247                 break;
  248         }
  249 
  250         /* Update the media status. */
  251         acphy_status(sc);
  252 
  253         /* Callback if something changed. */
  254         mii_phy_update(sc, cmd);
  255         return (0);
  256 }
  257 
  258 static void
  259 acphy_status(sc)
  260         struct mii_softc *sc;
  261 {
  262         struct mii_data *mii = sc->mii_pdata;
  263         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  264         int bmsr, bmcr, diag;
  265 
  266         mii->mii_media_status = IFM_AVALID;
  267         mii->mii_media_active = IFM_ETHER;
  268 
  269         bmsr = PHY_READ(sc, MII_BMSR) |
  270             PHY_READ(sc, MII_BMSR);
  271         if (bmsr & BMSR_LINK)
  272                 mii->mii_media_status |= IFM_ACTIVE;
  273 
  274         bmcr = PHY_READ(sc, MII_BMCR);
  275         if (bmcr & BMCR_ISO) {
  276                 mii->mii_media_active |= IFM_NONE;
  277                 mii->mii_media_status = 0;
  278                 return;
  279         }
  280 
  281         if (bmcr & BMCR_LOOP)
  282                 mii->mii_media_active |= IFM_LOOP;
  283 
  284         if (bmcr & BMCR_AUTOEN) {
  285                 if ((bmsr & BMSR_ACOMP) == 0) {
  286                         /* Erg, still trying, I guess... */
  287                         mii->mii_media_active |= IFM_NONE;
  288                         return;
  289                 }
  290                 diag = PHY_READ(sc, MII_ACPHY_DIAG);
  291                 if (diag & AC_DIAG_SPEED)
  292                         mii->mii_media_active |= IFM_100_TX;
  293                 else
  294                         mii->mii_media_active |= IFM_10_T;
  295 
  296                 if (diag & AC_DIAG_DUPLEX)
  297                         mii->mii_media_active |= IFM_FDX;
  298         } else
  299                 mii->mii_media_active = ife->ifm_media;
  300 }
  301 
  302 static void
  303 acphy_reset(sc)
  304         struct mii_softc *sc;
  305 {
  306 
  307         mii_phy_reset(sc);
  308         PHY_WRITE(sc, MII_ACPHY_INT, 0);
  309 }
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FreeBSD/Linux Kernel Cross Reference sys/dev/mii/acphy.c

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