inphy.c

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    1 /*-
    2  * Copyright (c) 2001 Jonathan Lemon
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  * 3. Neither the name of the author nor the names of any co-contributors
   14  *    may be used to endorse or promote products derived from this software
   15  *    without specific prior written permission.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  *
   29  */
   30 
   31 #include <sys/cdefs.h>
   32 __FBSDID("$FreeBSD: releng/6.0/sys/dev/mii/inphy.c 129876 2004-05-30 17:57:46Z phk $");
   33 
   34 /*
   35  * driver for Intel 82553 and 82555 PHYs
   36  */
   37 
   38 #include <sys/param.h>
   39 #include <sys/systm.h>
   40 #include <sys/kernel.h>
   41 #include <sys/module.h>
   42 #include <sys/socket.h>
   43 #include <sys/bus.h>
   44 
   45 #include <net/if.h>
   46 #include <net/if_media.h>
   47 
   48 #include <dev/mii/mii.h>
   49 #include <dev/mii/miivar.h>
   50 #include "miidevs.h"
   51 
   52 #include <dev/mii/inphyreg.h>
   53 
   54 #include "miibus_if.h"
   55 
   56 static int      inphy_probe(device_t dev);
   57 static int      inphy_attach(device_t dev);
   58 
   59 static device_method_t inphy_methods[] = {
   60         /* device interface */
   61         DEVMETHOD(device_probe,         inphy_probe),
   62         DEVMETHOD(device_attach,        inphy_attach),
   63         DEVMETHOD(device_detach,        mii_phy_detach),
   64         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
   65         { 0, 0 }
   66 };
   67 
   68 static devclass_t inphy_devclass;
   69 
   70 static driver_t inphy_driver = {
   71         "inphy",
   72         inphy_methods,
   73         sizeof(struct mii_softc)
   74 };
   75 
   76 DRIVER_MODULE(inphy, miibus, inphy_driver, inphy_devclass, 0, 0);
   77 
   78 static int      inphy_service(struct mii_softc *, struct mii_data *, int);
   79 static void     inphy_status(struct mii_softc *);
   80 
   81 static int
   82 inphy_probe(device_t dev)
   83 {
   84         struct mii_attach_args *ma;
   85 
   86         ma = device_get_ivars(dev);
   87 
   88         /* Intel 82553 A/B steppings */
   89         if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxINTEL &&
   90             MII_MODEL(ma->mii_id2) == MII_MODEL_xxINTEL_I82553AB) {
   91                 device_set_desc(dev, MII_STR_xxINTEL_I82553AB);
   92                 return (0);
   93         }
   94 
   95         if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_INTEL) {
   96                 switch (MII_MODEL(ma->mii_id2)) {
   97                 case MII_MODEL_INTEL_I82555:
   98                         device_set_desc(dev, MII_STR_INTEL_I82555);
   99                         return (0);
  100                 case MII_MODEL_INTEL_I82553C:
  101                         device_set_desc(dev, MII_STR_INTEL_I82553C);
  102                         return (0);
  103                 case MII_MODEL_INTEL_I82562EM:
  104                         device_set_desc(dev, MII_STR_INTEL_I82562EM);
  105                         return (0);
  106                 case MII_MODEL_INTEL_I82562ET:
  107                         device_set_desc(dev, MII_STR_INTEL_I82562ET);
  108                         return (0);
  109                 }
  110         }
  111 
  112         return (ENXIO);
  113 }
  114 
  115 static int
  116 inphy_attach(device_t dev)
  117 {
  118         struct mii_softc *sc;
  119         struct mii_attach_args *ma;
  120         struct mii_data *mii;
  121 
  122         sc = device_get_softc(dev);
  123         ma = device_get_ivars(dev);
  124         sc->mii_dev = device_get_parent(dev);
  125         mii = device_get_softc(sc->mii_dev);
  126         LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
  127 
  128         sc->mii_inst = mii->mii_instance;
  129         sc->mii_phy = ma->mii_phyno;
  130         sc->mii_service = inphy_service;
  131         sc->mii_pdata = mii;
  132         mii->mii_instance++;
  133 
  134 #if 0
  135         sc->mii_flags |= MIIF_NOISOLATE;
  136 #endif
  137 
  138         ifmedia_add(&mii->mii_media,
  139             IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
  140             BMCR_LOOP|BMCR_S100, NULL);
  141 
  142         mii_phy_reset(sc);
  143 
  144         sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
  145         device_printf(dev, " ");
  146         mii_phy_add_media(sc);
  147         printf("\n");
  148 
  149         MIIBUS_MEDIAINIT(sc->mii_dev);
  150 
  151         return (0);
  152 }
  153 
  154 static int
  155 inphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
  156 {
  157         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  158         int reg;
  159 
  160         switch (cmd) {
  161         case MII_POLLSTAT:
  162                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  163                         return (0);
  164                 break;
  165 
  166         case MII_MEDIACHG:
  167                 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
  168                         reg = PHY_READ(sc, MII_BMCR);
  169                         PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
  170                         return (0);
  171                 }
  172 
  173                 /*
  174                  * If the interface is not up, don't do anything.
  175                  */
  176                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  177                         break;
  178 
  179                 mii_phy_setmedia(sc);
  180                 break;
  181 
  182         case MII_TICK:
  183                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  184                         return (0);
  185                 if (mii_phy_tick(sc) == EJUSTRETURN)
  186                         return (0);
  187                 break;
  188         }
  189 
  190         /* Update the media status. */
  191         inphy_status(sc);
  192 
  193         /* Callback if something changed. */
  194         mii_phy_update(sc, cmd);
  195         return (0);
  196 }
  197 
  198 static void
  199 inphy_status(struct mii_softc *sc)
  200 {
  201         struct mii_data *mii = sc->mii_pdata;
  202         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  203         int bmsr, bmcr, scr;
  204 
  205         mii->mii_media_status = IFM_AVALID;
  206         mii->mii_media_active = IFM_ETHER;
  207 
  208         bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
  209         if (bmsr & BMSR_LINK)
  210                 mii->mii_media_status |= IFM_ACTIVE;
  211 
  212         bmcr = PHY_READ(sc, MII_BMCR);
  213         if (bmcr & BMCR_ISO) {
  214                 mii->mii_media_active |= IFM_NONE;
  215                 mii->mii_media_status = 0;
  216                 return;
  217         }
  218 
  219         if (bmcr & BMCR_LOOP)
  220                 mii->mii_media_active |= IFM_LOOP;
  221 
  222         if (bmcr & BMCR_AUTOEN) {
  223                 if ((bmsr & BMSR_ACOMP) == 0) {
  224                         mii->mii_media_active |= IFM_NONE;
  225                         return;
  226                 }
  227 
  228                 scr = PHY_READ(sc, MII_INPHY_SCR);
  229                 if (scr & SCR_S100)
  230                         mii->mii_media_active |= IFM_100_TX;
  231                 else
  232                         mii->mii_media_active |= IFM_10_T;
  233                 if (scr & SCR_FDX)
  234                         mii->mii_media_active |= IFM_FDX;
  235         } else
  236                 mii->mii_media_active = ife->ifm_media;
  237 }

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

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sys/dev/mii/inphy.c