smscphy.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("$FreeBSD$");
   27 
   28 /*
   29  * Driver for the SMSC LAN8710A
   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      smscphy_probe(device_t);
   53 static int      smscphy_attach(device_t);
   54 
   55 static int      smscphy_service(struct mii_softc *, struct mii_data *, int);
   56 static void     smscphy_auto(struct mii_softc *, int);
   57 static void     smscphy_status(struct mii_softc *);
   58 
   59 static device_method_t smscphy_methods[] = {
   60         /* device interface */
   61         DEVMETHOD(device_probe,         smscphy_probe),
   62         DEVMETHOD(device_attach,        smscphy_attach),
   63         DEVMETHOD(device_detach,        mii_phy_detach),
   64         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
   65         DEVMETHOD_END
   66 };
   67 
   68 static devclass_t smscphy_devclass;
   69 
   70 static driver_t smscphy_driver = {
   71         "smscphy",
   72         smscphy_methods,
   73         sizeof(struct mii_softc)
   74 };
   75 
   76 DRIVER_MODULE(smscphy, miibus, smscphy_driver, smscphy_devclass, 0, 0);
   77 
   78 static const struct mii_phydesc smscphys[] = {
   79         MII_PHY_DESC(SMC, LAN8710A),
   80         MII_PHY_END
   81 };
   82 
   83 static const struct mii_phy_funcs smscphy_funcs = {
   84         smscphy_service,
   85         smscphy_status,
   86         mii_phy_reset
   87 };
   88 
   89 static int
   90 smscphy_probe(device_t dev)
   91 {
   92 
   93         return (mii_phy_dev_probe(dev, smscphys, BUS_PROBE_DEFAULT));
   94 }
   95 
   96 static int
   97 smscphy_attach(device_t dev)
   98 {
   99         struct mii_softc *sc;
  100         const struct mii_phy_funcs *mpf;
  101 
  102         sc = device_get_softc(dev);
  103         mpf = &smscphy_funcs;
  104         mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE, mpf, 1);
  105         mii_phy_setmedia(sc);
  106 
  107         return (0);
  108 }
  109 
  110 static int
  111 smscphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
  112 {
  113         struct  ifmedia_entry *ife;
  114         int     reg;
  115 
  116         ife = mii->mii_media.ifm_cur;
  117 
  118         switch (cmd) {
  119         case MII_POLLSTAT:
  120                 break;
  121 
  122         case MII_MEDIACHG:
  123                 /*
  124                  * If the interface is not up, don't do anything.
  125                  */
  126                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  127                         break;
  128 
  129                 switch (IFM_SUBTYPE(ife->ifm_media)) {
  130                 case IFM_AUTO:
  131                         smscphy_auto(sc, ife->ifm_media);
  132                         break;
  133 
  134                 default:
  135                         mii_phy_setmedia(sc);
  136                         break;
  137                 }
  138 
  139                 break;
  140 
  141         case MII_TICK:
  142                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) {
  143                         return (0);
  144                 }
  145 
  146                 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) {
  147                         break;
  148                 }
  149 
  150                 /* I have no idea why BMCR_ISO gets set. */
  151                 reg = PHY_READ(sc, MII_BMCR);
  152                 if (reg & BMCR_ISO) {
  153                         PHY_WRITE(sc, MII_BMCR, reg & ~BMCR_ISO);
  154                 }
  155 
  156                 reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
  157                 if (reg & BMSR_LINK) {
  158                         sc->mii_ticks = 0;
  159                         break;
  160                 }
  161 
  162                 if (++sc->mii_ticks <= MII_ANEGTICKS) {
  163                         break;
  164                 }
  165 
  166                 sc->mii_ticks = 0;
  167                 PHY_RESET(sc);
  168                 smscphy_auto(sc, ife->ifm_media);
  169                 break;
  170         }
  171 
  172         /* Update the media status. */
  173         PHY_STATUS(sc);
  174 
  175         /* Callback if something changed. */
  176         mii_phy_update(sc, cmd);
  177         return (0);
  178 }
  179 
  180 static void
  181 smscphy_auto(struct mii_softc *sc, int media)
  182 {
  183         uint16_t        anar;
  184 
  185         anar = BMSR_MEDIA_TO_ANAR(sc->mii_capabilities) | ANAR_CSMA;
  186         if ((media & IFM_FLOW) != 0 || (sc->mii_flags & MIIF_FORCEPAUSE) != 0)
  187                 anar |= ANAR_FC;
  188         PHY_WRITE(sc, MII_ANAR, anar);
  189         /* Apparently this helps. */
  190         anar = PHY_READ(sc, MII_ANAR);
  191         PHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN | BMCR_STARTNEG);
  192 }
  193 
  194 static void
  195 smscphy_status(struct mii_softc *sc)
  196 {
  197         struct mii_data *mii;
  198         uint32_t bmcr, bmsr, status;
  199 
  200         mii = sc->mii_pdata;
  201         mii->mii_media_status = IFM_AVALID;
  202         mii->mii_media_active = IFM_ETHER;
  203 
  204         bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
  205         if ((bmsr & BMSR_LINK) != 0)
  206                 mii->mii_media_status |= IFM_ACTIVE;
  207 
  208         bmcr = PHY_READ(sc, MII_BMCR);
  209         if ((bmcr & BMCR_ISO) != 0) {
  210                 mii->mii_media_active |= IFM_NONE;
  211                 mii->mii_media_status = 0;
  212                 return;
  213         }
  214 
  215         if ((bmcr & BMCR_LOOP) != 0)
  216                 mii->mii_media_active |= IFM_LOOP;
  217 
  218         if ((bmcr & BMCR_AUTOEN) != 0) {
  219                 if ((bmsr & BMSR_ACOMP) == 0) {
  220                         /* Erg, still trying, I guess... */
  221                         mii->mii_media_active |= IFM_NONE;
  222                         return;
  223                 }
  224         }
  225 
  226         status = PHY_READ(sc, 0x1F);
  227         if (status & 0x0008)
  228                 mii->mii_media_active |= IFM_100_TX;
  229         else
  230                 mii->mii_media_active |= IFM_10_T;
  231         if (status & 0x0010)
  232                 mii->mii_media_active |= IFM_FDX | mii_phy_flowstatus(sc);
  233         else
  234                 mii->mii_media_active |= IFM_HDX;
  235 }

Cache object: 644880268df3e393d43fa0379b798652

[ 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/smscphy.c

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