root/dev/mii/mtdphy.c

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DEFINITIONS

This source file includes following definitions.
  1. mtdphymatch
  2. mtdphyattach
  3. mtdphy_service

    1 /*      $OpenBSD: mtdphy.c,v 1.12 2005/02/19 06:00:04 brad Exp $        */
    2 
    3 /*
    4  * Copyright (c) 1998, 1999 Jason L. Wright (jason@thought.net)
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   18  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   19  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
   20  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   21  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
   22  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
   24  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
   25  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   26  * POSSIBILITY OF SUCH DAMAGE.
   27  */
   28 
   29 /*
   30  * Driver for the Myson Technology MTD972 100BaseTX PCS/PMA.
   31  */
   32 
   33 #include <sys/param.h>
   34 #include <sys/systm.h>
   35 #include <sys/kernel.h>
   36 #include <sys/device.h>
   37 #include <sys/socket.h>
   38 #include <sys/errno.h>
   39 
   40 #include <net/if.h>
   41 #include <net/if_media.h>
   42 
   43 #include <dev/mii/mii.h>
   44 #include <dev/mii/miivar.h>
   45 #include <dev/mii/miidevs.h>
   46 #include <dev/mii/mtdphyreg.h>
   47 
   48 int     mtdphymatch(struct device *, void *, void *);
   49 void    mtdphyattach(struct device *, struct device *, void *);
   50 
   51 struct cfattach mtdphy_ca = {
   52         sizeof(struct mii_softc), mtdphymatch, mtdphyattach, mii_phy_detach,
   53             mii_phy_activate
   54 };
   55 
   56 struct cfdriver mtdphy_cd = {
   57         NULL, "mtdphy", DV_DULL
   58 };
   59 
   60 int     mtdphy_service(struct mii_softc *, struct mii_data *, int);
   61 
   62 const struct mii_phy_funcs mtdphy_funcs = {
   63         mtdphy_service, ukphy_status, mii_phy_reset,
   64 };
   65 
   66 static const struct mii_phydesc mtdphys[] = {
   67         { MII_OUI_MYSON,                MII_MODEL_MYSON_MTD972,
   68           MII_STR_MYSON_MTD972 },
   69 
   70         { 0,                    0,
   71           NULL },
   72 };
   73 
   74 int
   75 mtdphymatch(struct device *parent, void *match, void *aux)
   76 {
   77         struct mii_attach_args *ma = aux;
   78 
   79         if (mii_phy_match(ma, mtdphys) != NULL)
   80                 return (10);
   81 
   82         return (0);
   83 }
   84 
   85 void
   86 mtdphyattach(struct device *parent, struct device *self, void *aux)
   87 {
   88         struct mii_softc *sc = (struct mii_softc *)self;
   89         struct mii_attach_args *ma = aux;
   90         struct mii_data *mii = ma->mii_data;
   91         const struct mii_phydesc *mpd;
   92 
   93         mpd = mii_phy_match(ma, mtdphys);
   94         printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
   95 
   96         sc->mii_inst = mii->mii_instance;
   97         sc->mii_phy = ma->mii_phyno;
   98         sc->mii_funcs = &mtdphy_funcs;
   99         sc->mii_pdata = mii;
  100         sc->mii_flags = ma->mii_flags;
  101 
  102         PHY_RESET(sc);
  103 
  104         sc->mii_capabilities =
  105             PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
  106         if (sc->mii_capabilities & BMSR_MEDIAMASK)
  107                 mii_phy_add_media(sc);
  108 }
  109 
  110 int
  111 mtdphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
  112 {
  113         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  114         int reg;
  115 
  116         if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
  117                 return (ENXIO);
  118 
  119         switch (cmd) {
  120         case MII_POLLSTAT:
  121                 /*
  122                  * If we're not polling our PHY instance, just return.
  123                  */
  124                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  125                         return (0);
  126                 break;
  127 
  128         case MII_MEDIACHG:
  129                 /*
  130                  * If the interface is not up, don't do anything.
  131                  */
  132                 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
  133                         reg = PHY_READ(sc, MII_BMCR);
  134                         PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
  135                         return (0);
  136                 }
  137 
  138                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  139                         break;
  140 
  141                 mii_phy_setmedia(sc);
  142                 break;
  143 
  144         case MII_TICK:
  145                 /*
  146                  *If we're not currently selected, just return.
  147                  */
  148                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  149                         return (0);
  150 
  151                 if (mii_phy_tick(sc) == EJUSTRETURN)
  152                         return (0);
  153                 break;
  154 
  155         case MII_DOWN:
  156                 mii_phy_down(sc);
  157                 return (0);
  158         }
  159 
  160         /* Update the media status. */
  161         mii_phy_status(sc);
  162 
  163         /* Callback if something changed. */
  164         mii_phy_update(sc, cmd);
  165         return (0);
  166 }

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