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  *
   18  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   19  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   20  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   21  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   22  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   28  * POSSIBILITY OF SUCH DAMAGE.
   29  */
   30 
   31 /*-
   32  * Copyright (c) 1997 Manuel Bouyer.  All rights reserved.
   33  *
   34  * Redistribution and use in source and binary forms, with or without
   35  * modification, are permitted provided that the following conditions
   36  * are met:
   37  * 1. Redistributions of source code must retain the above copyright
   38  *    notice, this list of conditions and the following disclaimer.
   39  * 2. Redistributions in binary form must reproduce the above copyright
   40  *    notice, this list of conditions and the following disclaimer in the
   41  *    documentation and/or other materials provided with the distribution.
   42  *
   43  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   44  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   45  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   46  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   47  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   48  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   49  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   50  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   51  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   52  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   53  */
   54 
   55 #include <sys/cdefs.h>
   56 __FBSDID("$FreeBSD: releng/8.2/sys/dev/mii/acphy.c 214909 2010-11-07 11:12:29Z marius $");
   57 
   58 /*
   59  * Driver for Altima AC101 10/100 PHY
   60  */
   61 
   62 #include <sys/param.h>
   63 #include <sys/systm.h>
   64 #include <sys/kernel.h>
   65 #include <sys/socket.h>
   66 #include <sys/errno.h>
   67 #include <sys/module.h>
   68 #include <sys/bus.h>
   69 
   70 #include <net/if.h>
   71 #include <net/if_media.h>
   72 
   73 #include <dev/mii/mii.h>
   74 #include <dev/mii/miivar.h>
   75 #include "miidevs.h"
   76 
   77 #include <dev/mii/acphyreg.h>
   78 
   79 #include "miibus_if.h"
   80 
   81 static int acphy_probe(device_t);
   82 static int acphy_attach(device_t);
   83 
   84 static device_method_t acphy_methods[] = {
   85         /* device interface */
   86         DEVMETHOD(device_probe,         acphy_probe),
   87         DEVMETHOD(device_attach,        acphy_attach),
   88         DEVMETHOD(device_detach,        mii_phy_detach),
   89         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
   90         { 0, 0 }
   91 };
   92 
   93 static devclass_t acphy_devclass;
   94 
   95 static driver_t acphy_driver = {
   96         "acphy",
   97         acphy_methods,
   98         sizeof(struct mii_softc)
   99 };
  100 
  101 DRIVER_MODULE(acphy, miibus, acphy_driver, acphy_devclass, 0, 0);
  102 
  103 static int      acphy_service(struct mii_softc *, struct mii_data *, int);
  104 static void     acphy_reset(struct mii_softc *);
  105 static void     acphy_status(struct mii_softc *);
  106 
  107 static const struct mii_phydesc acphys[] = {
  108         MII_PHY_DESC(xxALTIMA, AC101),
  109         MII_PHY_DESC(xxALTIMA, AC101L),
  110         /* XXX This is reported to work, but it's not from any data sheet. */
  111         MII_PHY_DESC(xxALTIMA, ACXXX),
  112         MII_PHY_END
  113 };
  114 
  115 static int
  116 acphy_probe(device_t dev)
  117 {
  118 
  119         return (mii_phy_dev_probe(dev, acphys, BUS_PROBE_DEFAULT));
  120 }
  121 
  122 static int
  123 acphy_attach(device_t dev)
  124 {
  125         struct mii_softc *sc;
  126         struct mii_attach_args *ma;
  127         struct mii_data *mii;
  128 
  129         sc = device_get_softc(dev);
  130         ma = device_get_ivars(dev);
  131         sc->mii_dev = device_get_parent(dev);
  132         mii = ma->mii_data;
  133         LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
  134 
  135         sc->mii_flags = miibus_get_flags(dev);
  136         sc->mii_inst = mii->mii_instance++;
  137         sc->mii_phy = ma->mii_phyno;
  138         sc->mii_service = acphy_service;
  139         sc->mii_pdata = mii;
  140 
  141         acphy_reset(sc);
  142 
  143         sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
  144         device_printf(dev, " ");
  145 
  146 #define ADD(m, c)       ifmedia_add(&mii->mii_media, (m), (c), NULL)
  147         if ((PHY_READ(sc, MII_ACPHY_MCTL) & AC_MCTL_FX_SEL) != 0) {
  148                 sc->mii_flags |= MIIF_HAVEFIBER;
  149                 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, 0, sc->mii_inst),
  150                     MII_MEDIA_100_TX);
  151                 printf("100baseFX, ");
  152                 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, IFM_FDX, sc->mii_inst),
  153                     MII_MEDIA_100_TX_FDX);
  154                 printf("100baseFX-FDX, ");
  155         }
  156 #undef ADD
  157 
  158         mii_phy_add_media(sc);
  159         printf("\n");
  160 
  161         MIIBUS_MEDIAINIT(sc->mii_dev);
  162         return (0);
  163 }
  164 
  165 static int
  166 acphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
  167 {
  168         int reg;
  169 
  170         switch (cmd) {
  171         case MII_POLLSTAT:
  172                 break;
  173 
  174         case MII_MEDIACHG:
  175                 /*
  176                  * If the interface is not up, don't do anything.
  177                  */
  178                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  179                         break;
  180 
  181                 /* Wake & deisolate up if necessary */
  182                 reg = PHY_READ(sc, MII_BMCR);
  183                 if (reg & (BMCR_ISO | BMCR_PDOWN))
  184                         PHY_WRITE(sc, MII_BMCR, reg & ~(BMCR_ISO | BMCR_PDOWN));
  185 
  186                 mii_phy_setmedia(sc);
  187                 break;
  188 
  189         case MII_TICK:
  190                 /*
  191                  * Is the interface even up?
  192                  */
  193                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  194                         return (0);
  195 
  196                 /*
  197                  * This PHY's autonegotiation doesn't need to be kicked.
  198                  */
  199                 break;
  200         }
  201 
  202         /* Update the media status. */
  203         acphy_status(sc);
  204 
  205         /* Callback if something changed. */
  206         mii_phy_update(sc, cmd);
  207         return (0);
  208 }
  209 
  210 static void
  211 acphy_status(struct mii_softc *sc)
  212 {
  213         struct mii_data *mii = sc->mii_pdata;
  214         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  215         int bmsr, bmcr, diag;
  216 
  217         mii->mii_media_status = IFM_AVALID;
  218         mii->mii_media_active = IFM_ETHER;
  219 
  220         bmsr = PHY_READ(sc, MII_BMSR) |
  221             PHY_READ(sc, MII_BMSR);
  222         if (bmsr & BMSR_LINK)
  223                 mii->mii_media_status |= IFM_ACTIVE;
  224 
  225         bmcr = PHY_READ(sc, MII_BMCR);
  226         if (bmcr & BMCR_ISO) {
  227                 mii->mii_media_active |= IFM_NONE;
  228                 mii->mii_media_status = 0;
  229                 return;
  230         }
  231 
  232         if (bmcr & BMCR_LOOP)
  233                 mii->mii_media_active |= IFM_LOOP;
  234 
  235         if (bmcr & BMCR_AUTOEN) {
  236                 if ((bmsr & BMSR_ACOMP) == 0) {
  237                         /* Erg, still trying, I guess... */
  238                         mii->mii_media_active |= IFM_NONE;
  239                         return;
  240                 }
  241                 diag = PHY_READ(sc, MII_ACPHY_DIAG);
  242                 if (diag & AC_DIAG_SPEED)
  243                         mii->mii_media_active |= IFM_100_TX;
  244                 else
  245                         mii->mii_media_active |= IFM_10_T;
  246 
  247                 if (diag & AC_DIAG_DUPLEX)
  248                         mii->mii_media_active |= IFM_FDX;
  249                 else
  250                         mii->mii_media_active |= IFM_HDX;
  251         } else
  252                 mii->mii_media_active = ife->ifm_media;
  253 }
  254 
  255 static void
  256 acphy_reset(struct mii_softc *sc)
  257 {
  258 
  259         mii_phy_reset(sc);
  260         PHY_WRITE(sc, MII_ACPHY_INT, 0);
  261 }

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

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sys/dev/mii/acphy.c