iophy.c

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    1 /*      $NetBSD: iophy.c,v 1.21 2003/04/29 01:49:34 thorpej Exp $       */
    2 
    3 /*
    4  * Copyright (c) 1998, 1999, 2000 The NetBSD Foundation, Inc.
    5  * All rights reserved.
    6  *
    7  * This code is derived from software contributed to The NetBSD Foundation
    8  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
    9  * NASA Ames Research Center.
   10  *
   11  * Redistribution and use in source and binary forms, with or without
   12  * modification, are permitted provided that the following conditions
   13  * are met:
   14  * 1. Redistributions of source code must retain the above copyright
   15  *    notice, this list of conditions and the following disclaimer.
   16  * 2. Redistributions in binary form must reproduce the above copyright
   17  *    notice, this list of conditions and the following disclaimer in the
   18  *    documentation and/or other materials provided with the distribution.
   19  * 3. All advertising materials mentioning features or use of this software
   20  *    must display the following acknowledgement:
   21  *      This product includes software developed by the NetBSD
   22  *      Foundation, Inc. and its contributors.
   23  * 4. Neither the name of The NetBSD Foundation nor the names of its
   24  *    contributors may be used to endorse or promote products derived
   25  *    from this software without specific prior written permission.
   26  *
   27  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   28  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   29  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   30  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   31  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   32  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   33  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   34  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   35  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   36  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   37  * POSSIBILITY OF SUCH DAMAGE.
   38  */
   39 
   40 /*
   41  * Copyright (c) 1997 Manuel Bouyer.  All rights reserved.
   42  *
   43  * Redistribution and use in source and binary forms, with or without
   44  * modification, are permitted provided that the following conditions
   45  * are met:
   46  * 1. Redistributions of source code must retain the above copyright
   47  *    notice, this list of conditions and the following disclaimer.
   48  * 2. Redistributions in binary form must reproduce the above copyright
   49  *    notice, this list of conditions and the following disclaimer in the
   50  *    documentation and/or other materials provided with the distribution.
   51  * 3. All advertising materials mentioning features or use of this software
   52  *    must display the following acknowledgement:
   53  *      This product includes software developed by Manuel Bouyer.
   54  * 4. The name of the author may not be used to endorse or promote products
   55  *    derived from this software without specific prior written permission.
   56  *
   57  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   58  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   59  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   60  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   61  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   62  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   63  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   64  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   65  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   66  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   67  */
   68 
   69 /*
   70  * Intel 82553 PHY driver
   71  */
   72 
   73 #include <sys/cdefs.h>
   74 __KERNEL_RCSID(0, "$NetBSD: iophy.c,v 1.21 2003/04/29 01:49:34 thorpej Exp $");
   75 
   76 #include <sys/param.h>
   77 #include <sys/systm.h>
   78 #include <sys/kernel.h>
   79 #include <sys/device.h>
   80 #include <sys/socket.h>
   81 
   82 #include <net/if.h>
   83 #include <net/if_media.h>
   84 
   85 #include <dev/mii/mii.h>
   86 #include <dev/mii/miivar.h>
   87 #include <dev/mii/miidevs.h>
   88 
   89 #include <dev/mii/iophyreg.h>
   90 
   91 int     iophymatch(struct device *, struct cfdata *, void *);
   92 void    iophyattach(struct device *, struct device *, void *);
   93 
   94 CFATTACH_DECL(iophy, sizeof(struct mii_softc),
   95     iophymatch, iophyattach, mii_phy_detach, mii_phy_activate);
   96 
   97 int     iophy_service(struct mii_softc *, struct mii_data *, int);
   98 void    iophy_status(struct mii_softc *);
   99 
  100 const struct mii_phy_funcs iophy_funcs = {
  101         iophy_service, iophy_status, mii_phy_reset,
  102 };
  103 
  104 const struct mii_phydesc iophys[] = {
  105         { MII_OUI_xxINTEL,              MII_MODEL_xxINTEL_I82553,
  106           MII_STR_xxINTEL_I82553 },
  107 
  108         { MII_OUI_yyINTEL,              MII_MODEL_yyINTEL_I82553,
  109           MII_STR_yyINTEL_I82553 },
  110 
  111         { 0,                            0,
  112           NULL },
  113 };
  114 
  115 int
  116 iophymatch(struct device *parent, struct cfdata *match, void *aux)
  117 {
  118         struct mii_attach_args *ma = aux;
  119 
  120         if (mii_phy_match(ma, iophys) != NULL)
  121                 return (10);
  122 
  123         return (0);
  124 }
  125 
  126 void
  127 iophyattach(struct device *parent, struct device *self, void *aux)
  128 {
  129         struct mii_softc *sc = (struct mii_softc *)self;
  130         struct mii_attach_args *ma = aux;
  131         struct mii_data *mii = ma->mii_data;
  132         const struct mii_phydesc *mpd;
  133 
  134         mpd = mii_phy_match(ma, iophys);
  135         aprint_naive(": Media interface\n");
  136         aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
  137 
  138         sc->mii_inst = mii->mii_instance;
  139         sc->mii_phy = ma->mii_phyno;
  140         sc->mii_funcs = &iophy_funcs;
  141         sc->mii_pdata = mii;
  142         sc->mii_flags = ma->mii_flags;
  143         sc->mii_anegticks = 5;
  144 
  145         PHY_RESET(sc);
  146 
  147         sc->mii_capabilities =
  148             PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
  149         aprint_normal("%s: ", sc->mii_dev.dv_xname);
  150         if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
  151                 aprint_error("no media present");
  152         else
  153                 mii_phy_add_media(sc);
  154         aprint_normal("\n");
  155 }
  156 
  157 int
  158 iophy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
  159 {
  160         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  161         int reg;
  162 
  163         if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
  164                 return (ENXIO);
  165 
  166         switch (cmd) {
  167         case MII_POLLSTAT:
  168                 /*
  169                  * If we're not polling our PHY instance, just return.
  170                  */
  171                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  172                         return (0);
  173                 break;
  174 
  175         case MII_MEDIACHG:
  176                 /*
  177                  * If the media indicates a different PHY instance,
  178                  * isolate ourselves.
  179                  */
  180                 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
  181                         reg = PHY_READ(sc, MII_BMCR);
  182                         PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
  183                         return (0);
  184                 }
  185 
  186                 /*
  187                  * If the interface is not up, don't do anything.
  188                  */
  189                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  190                         break;
  191 
  192                 mii_phy_setmedia(sc);
  193                 break;
  194 
  195         case MII_TICK:
  196                 /*
  197                  * If we're not currently selected, just return.
  198                  */
  199                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  200                         return (0);
  201 
  202                 if (mii_phy_tick(sc) == EJUSTRETURN)
  203                         return (0);
  204                 break;
  205 
  206         case MII_DOWN:
  207                 mii_phy_down(sc);
  208                 return (0);
  209         }
  210 
  211         /* Update the media status. */
  212         mii_phy_status(sc);
  213 
  214         /* Callback if something changed. */
  215         mii_phy_update(sc, cmd);
  216         return (0);
  217 }
  218 
  219 void
  220 iophy_status(struct mii_softc *sc)
  221 {
  222         struct mii_data *mii = sc->mii_pdata;
  223         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  224         int bmsr, bmcr, ext0;
  225 
  226         mii->mii_media_status = IFM_AVALID;
  227         mii->mii_media_active = IFM_ETHER;
  228 
  229         bmsr = PHY_READ(sc, MII_BMSR) |
  230             PHY_READ(sc, MII_BMSR);
  231         if (bmsr & BMSR_LINK)
  232                 mii->mii_media_status |= IFM_ACTIVE;
  233 
  234         bmcr = PHY_READ(sc, MII_BMCR);
  235         if (bmcr & BMCR_ISO) {
  236                 mii->mii_media_active |= IFM_NONE;
  237                 mii->mii_media_status = 0;
  238                 return;
  239         }
  240 
  241         if (bmcr & BMCR_LOOP)
  242                 mii->mii_media_active |= IFM_LOOP;
  243 
  244         if (bmcr & BMCR_AUTOEN) {
  245                 if ((bmsr & BMSR_ACOMP) == 0) {
  246                         /* Erg, still trying, I guess... */
  247                         mii->mii_media_active |= IFM_NONE;
  248                         return;
  249                 }
  250                 ext0 = PHY_READ(sc, MII_IOPHY_EXT0);
  251 
  252                 if (ext0 & EXT0_SPEED)
  253                         if (bmsr & BMSR_100T4) {
  254                                 mii->mii_media_active |= IFM_100_T4;
  255                                 return;
  256                         } else {
  257                                 mii->mii_media_active |= IFM_100_TX;
  258                         }
  259                 else
  260                         mii->mii_media_active |= IFM_10_T;
  261 
  262                 if (ext0 & EXT0_DUPLEX)
  263                         mii->mii_media_active |= IFM_FDX;
  264         } else
  265                 mii->mii_media_active = ife->ifm_media;
  266 }
Cache object: 39c4f96cb1148e67fa6ff549a855bce7
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FreeBSD/Linux Kernel Cross Reference sys/dev/mii/iophy.c

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