inphy.c

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    1 /*-
    2  * SPDX-License-Identifier: BSD-3-Clause
    3  *
    4  * Copyright (c) 2001 Jonathan Lemon
    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  * 3. Neither the name of the author nor the names of any co-contributors
   16  *    may be used to endorse or promote products derived from this software
   17  *    without specific prior written permission.
   18  *
   19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   29  * SUCH DAMAGE.
   30  *
   31  */
   32 
   33 #include <sys/cdefs.h>
   34 __FBSDID("$FreeBSD$");
   35 
   36 /*
   37  * driver for Intel 82553 and 82555 PHYs
   38  */
   39 
   40 #include <sys/param.h>
   41 #include <sys/systm.h>
   42 #include <sys/kernel.h>
   43 #include <sys/module.h>
   44 #include <sys/socket.h>
   45 #include <sys/bus.h>
   46 
   47 #include <net/if.h>
   48 #include <net/if_var.h>
   49 #include <net/if_media.h>
   50 
   51 #include <dev/mii/mii.h>
   52 #include <dev/mii/miivar.h>
   53 #include "miidevs.h"
   54 
   55 #include <dev/fxp/inphyreg.h>
   56 
   57 #include "miibus_if.h"
   58 
   59 static int      inphy_probe(device_t dev);
   60 static int      inphy_attach(device_t dev);
   61 
   62 static device_method_t inphy_methods[] = {
   63         /* device interface */
   64         DEVMETHOD(device_probe,         inphy_probe),
   65         DEVMETHOD(device_attach,        inphy_attach),
   66         DEVMETHOD(device_detach,        mii_phy_detach),
   67         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
   68         { 0, 0 }
   69 };
   70 
   71 static driver_t inphy_driver = {
   72         "inphy",
   73         inphy_methods,
   74         sizeof(struct mii_softc)
   75 };
   76 
   77 DRIVER_MODULE(inphy, miibus, inphy_driver, 0, 0);
   78 
   79 static int      inphy_service(struct mii_softc *, struct mii_data *, int);
   80 static void     inphy_status(struct mii_softc *);
   81 static void     inphy_reset(struct mii_softc *);
   82 
   83 static const struct mii_phydesc inphys[] = {
   84         MII_PHY_DESC(xxINTEL, I82553),
   85         MII_PHY_DESC(yyINTEL, I82553),
   86         MII_PHY_DESC(yyINTEL, I82555),
   87         MII_PHY_DESC(yyINTEL, I82562EM),
   88         MII_PHY_DESC(yyINTEL, I82562ET),
   89         MII_PHY_END
   90 };
   91 
   92 static const struct mii_phy_funcs inphy_funcs = {
   93         inphy_service,
   94         inphy_status,
   95         inphy_reset
   96 };
   97 
   98 static int
   99 inphy_probe(device_t dev)
  100 {
  101 
  102         return (mii_phy_dev_probe(dev, inphys, BUS_PROBE_DEFAULT));
  103 }
  104 
  105 static int
  106 inphy_attach(device_t dev)
  107 {
  108 
  109         mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &inphy_funcs, 1);
  110         return (0);
  111 }
  112 
  113 static int
  114 inphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
  115 {
  116 
  117         switch (cmd) {
  118         case MII_POLLSTAT:
  119                 break;
  120 
  121         case MII_MEDIACHG:
  122                 /*
  123                  * If the interface is not up, don't do anything.
  124                  */
  125                 if ((if_getflags(mii->mii_ifp) & IFF_UP) == 0)
  126                         break;
  127 
  128                 mii_phy_setmedia(sc);
  129                 break;
  130 
  131         case MII_TICK:
  132                 if (mii_phy_tick(sc) == EJUSTRETURN)
  133                         return (0);
  134                 break;
  135         }
  136 
  137         /* Update the media status. */
  138         PHY_STATUS(sc);
  139 
  140         /* Callback if something changed. */
  141         mii_phy_update(sc, cmd);
  142         return (0);
  143 }
  144 
  145 static void
  146 inphy_status(struct mii_softc *sc)
  147 {
  148         struct mii_data *mii = sc->mii_pdata;
  149         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  150         int bmsr, bmcr, scr;
  151 
  152         mii->mii_media_status = IFM_AVALID;
  153         mii->mii_media_active = IFM_ETHER;
  154 
  155         bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
  156         if (bmsr & BMSR_LINK)
  157                 mii->mii_media_status |= IFM_ACTIVE;
  158 
  159         bmcr = PHY_READ(sc, MII_BMCR);
  160         if (bmcr & BMCR_ISO) {
  161                 mii->mii_media_active |= IFM_NONE;
  162                 mii->mii_media_status = 0;
  163                 return;
  164         }
  165 
  166         if (bmcr & BMCR_LOOP)
  167                 mii->mii_media_active |= IFM_LOOP;
  168 
  169         if (bmcr & BMCR_AUTOEN) {
  170                 if ((bmsr & BMSR_ACOMP) == 0) {
  171                         mii->mii_media_active |= IFM_NONE;
  172                         return;
  173                 }
  174 
  175                 scr = PHY_READ(sc, MII_INPHY_SCR);
  176                 if (scr & SCR_S100)
  177                         mii->mii_media_active |= IFM_100_TX;
  178                 else
  179                         mii->mii_media_active |= IFM_10_T;
  180                 if (scr & SCR_FDX)
  181                         mii->mii_media_active |=
  182                             IFM_FDX | mii_phy_flowstatus(sc);
  183                 else
  184                         mii->mii_media_active |= IFM_HDX;
  185         } else
  186                 mii->mii_media_active = ife->ifm_media;
  187 }
  188 
  189 static void
  190 inphy_reset(struct mii_softc *sc)
  191 {
  192 
  193         mii_phy_reset(sc);
  194 
  195         /* Ensure Bay flow control is disabled. */
  196         PHY_WRITE(sc, MII_INPHY_SCR,
  197             PHY_READ(sc, MII_INPHY_SCR) & ~SCR_FLOWCTL);
  198 }

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

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sys/dev/fxp/inphy.c