smcphy.c

Version: - FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10

    1 /*-
    2  * Copyright (c) 2006 Benno Rice.  All rights reserved.
    3  *
    4  * Redistribution and use in source and binary forms, with or without
    5  * modification, are permitted provided that the following conditions
    6  * are met:
    7  * 1. Redistributions of source code must retain the above copyright
    8  *    notice, this list of conditions and the following disclaimer.
    9  * 2. Redistributions in binary form must reproduce the above copyright
   10  *    notice, this list of conditions and the following disclaimer in the
   11  *    documentation and/or other materials provided with the distribution.
   12  *
   13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   14  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   15  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   16  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   17  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   18  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   19  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   20  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   21  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   22  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   23  */
   24 
   25 #include <sys/cdefs.h>
   26 __FBSDID("$FreeBSD: releng/8.4/sys/dev/mii/smcphy.c 230718 2012-01-29 01:35:14Z marius $");
   27 
   28 /*
   29  * Driver for the internal PHY on the SMSC LAN91C111.
   30  */
   31 
   32 #include <sys/param.h>
   33 #include <sys/systm.h>
   34 #include <sys/kernel.h>
   35 #include <sys/socket.h>
   36 #include <sys/errno.h>
   37 #include <sys/module.h>
   38 #include <sys/bus.h>
   39 #include <sys/malloc.h>
   40 
   41 #include <machine/bus.h>
   42 
   43 #include <net/if.h>
   44 #include <net/if_media.h>
   45 
   46 #include <dev/mii/mii.h>
   47 #include <dev/mii/miivar.h>
   48 #include "miidevs.h"
   49 
   50 #include "miibus_if.h"
   51 
   52 static int      smcphy_probe(device_t);
   53 static int      smcphy_attach(device_t);
   54 
   55 static int      smcphy_service(struct mii_softc *, struct mii_data *, int);
   56 static void     smcphy_reset(struct mii_softc *);
   57 static void     smcphy_auto(struct mii_softc *, int);
   58 
   59 static device_method_t smcphy_methods[] = {
   60         /* device interface */
   61         DEVMETHOD(device_probe,         smcphy_probe),
   62         DEVMETHOD(device_attach,        smcphy_attach),
   63         DEVMETHOD(device_detach,        mii_phy_detach),
   64         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
   65         DEVMETHOD_END
   66 };
   67 
   68 static devclass_t smcphy_devclass;
   69 
   70 static driver_t smcphy_driver = {
   71         "smcphy",
   72         smcphy_methods,
   73         sizeof(struct mii_softc)
   74 };
   75 
   76 DRIVER_MODULE(smcphy, miibus, smcphy_driver, smcphy_devclass, 0, 0);
   77 
   78 static const struct mii_phydesc smcphys[] = {
   79         MII_PHY_DESC(SMSC, LAN83C183),
   80         MII_PHY_END
   81 };
   82 
   83 static int
   84 smcphy_probe(device_t dev)
   85 {
   86 
   87         return (mii_phy_dev_probe(dev, smcphys, BUS_PROBE_DEFAULT));
   88 }
   89 
   90 static int
   91 smcphy_attach(device_t dev)
   92 {
   93         struct  mii_softc *sc;
   94         struct  mii_attach_args *ma;
   95         struct  mii_data *mii;
   96 
   97         sc = device_get_softc(dev);
   98         ma = device_get_ivars(dev);
   99         sc->mii_dev = device_get_parent(dev);
  100         mii = ma->mii_data;
  101         LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
  102 
  103         sc->mii_flags = miibus_get_flags(dev);
  104         sc->mii_inst = mii->mii_instance++;
  105         sc->mii_phy = ma->mii_phyno;
  106         sc->mii_service = smcphy_service;
  107         sc->mii_pdata = mii;
  108 
  109         sc->mii_flags |= MIIF_NOISOLATE | MIIF_NOLOOP | MIIF_NOMANPAUSE;
  110 
  111         smcphy_reset(sc);
  112 
  113         /* Mask interrupts, we poll instead. */
  114         PHY_WRITE(sc, 0x1e, 0xffc0);
  115 
  116         sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
  117         device_printf(dev, " ");
  118         mii_phy_add_media(sc);
  119         printf("\n");
  120 
  121         MIIBUS_MEDIAINIT(sc->mii_dev);
  122         mii_phy_setmedia(sc);
  123 
  124         return (0);
  125 }
  126 
  127 static int
  128 smcphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
  129 {
  130         struct  ifmedia_entry *ife;
  131         int     reg;
  132 
  133         ife = mii->mii_media.ifm_cur;
  134 
  135         switch (cmd) {
  136         case MII_POLLSTAT:
  137                 break;
  138 
  139         case MII_MEDIACHG:
  140                 /*
  141                  * If the interface is not up, don't do anything.
  142                  */
  143                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  144                         break;
  145 
  146                 switch (IFM_SUBTYPE(ife->ifm_media)) {
  147                 case IFM_AUTO:
  148                         smcphy_auto(sc, ife->ifm_media);
  149                         break;
  150 
  151                 default:
  152                         mii_phy_setmedia(sc);
  153                         break;
  154                 }
  155 
  156                 break;
  157 
  158         case MII_TICK:
  159                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) {
  160                         return (0);
  161                 }
  162 
  163                 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) {
  164                         break;
  165                 }
  166 
  167                 /* I have no idea why BMCR_ISO gets set. */
  168                 reg = PHY_READ(sc, MII_BMCR);
  169                 if (reg & BMCR_ISO) {
  170                         PHY_WRITE(sc, MII_BMCR, reg & ~BMCR_ISO);
  171                 }
  172 
  173                 reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
  174                 if (reg & BMSR_LINK) {
  175                         sc->mii_ticks = 0;
  176                         break;
  177                 }
  178 
  179                 if (++sc->mii_ticks <= MII_ANEGTICKS) {
  180                         break;
  181                 }
  182 
  183                 sc->mii_ticks = 0;
  184                 smcphy_reset(sc);
  185                 smcphy_auto(sc, ife->ifm_media);
  186                 break;
  187         }
  188 
  189         /* Update the media status. */
  190         ukphy_status(sc);
  191 
  192         /* Callback if something changed. */
  193         mii_phy_update(sc, cmd);
  194         return (0);
  195 }
  196 
  197 static void
  198 smcphy_reset(struct mii_softc *sc)
  199 {
  200         u_int   bmcr;
  201         int     timeout;
  202 
  203         PHY_WRITE(sc, MII_BMCR, BMCR_RESET);
  204 
  205         for (timeout = 2; timeout > 0; timeout--) {
  206                 DELAY(50000);
  207                 bmcr = PHY_READ(sc, MII_BMCR);
  208                 if ((bmcr & BMCR_RESET) == 0)
  209                         break;
  210         }
  211 
  212         if (bmcr & BMCR_RESET)
  213                 device_printf(sc->mii_dev, "reset failed\n");
  214 
  215         PHY_WRITE(sc, MII_BMCR, 0x3000);
  216 
  217         /* Mask interrupts, we poll instead. */
  218         PHY_WRITE(sc, 0x1e, 0xffc0);
  219 }
  220 
  221 static void
  222 smcphy_auto(struct mii_softc *sc, int media)
  223 {
  224         uint16_t        anar;
  225 
  226         anar = BMSR_MEDIA_TO_ANAR(sc->mii_capabilities) | ANAR_CSMA;
  227         if ((media & IFM_FLOW) != 0 || (sc->mii_flags & MIIF_FORCEPAUSE) != 0)
  228                 anar |= ANAR_FC;
  229         PHY_WRITE(sc, MII_ANAR, anar);
  230         /* Apparently this helps. */
  231         anar = PHY_READ(sc, MII_ANAR);
  232         PHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN | BMCR_STARTNEG);
  233 }

Cache object: 2f5720447504987181a121b713295bdc

[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.

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

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