axphy.c

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2009, M. Warner Losh
    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 unmodified, this list of conditions, and the following
   12  *    disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   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 #include <sys/cdefs.h>
   30 __FBSDID("$FreeBSD$");
   31 
   32 /*
   33  * driver for internal phy in the AX88x9x chips.
   34  */
   35 
   36 #include <sys/param.h>
   37 #include <sys/systm.h>
   38 #include <sys/kernel.h>
   39 #include <sys/module.h>
   40 #include <sys/socket.h>
   41 #include <sys/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      axphy_probe(device_t dev);
   53 static int      axphy_attach(device_t dev);
   54 
   55 static device_method_t axphy_methods[] = {
   56         /* device interface */
   57         DEVMETHOD(device_probe,         axphy_probe),
   58         DEVMETHOD(device_attach,        axphy_attach),
   59         DEVMETHOD(device_detach,        mii_phy_detach),
   60         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
   61         DEVMETHOD_END
   62 };
   63 
   64 static devclass_t axphy_devclass;
   65 
   66 static driver_t axphy_driver = {
   67         "axphy",
   68         axphy_methods,
   69         sizeof(struct mii_softc)
   70 };
   71 
   72 DRIVER_MODULE(axphy, miibus, axphy_driver, axphy_devclass, 0, 0);
   73 
   74 static int      axphy_service(struct mii_softc *, struct mii_data *, int);
   75 static void     axphy_status(struct mii_softc *);
   76 
   77 static const struct mii_phydesc axphys[] = {
   78         MII_PHY_DESC(xxASIX, AX88X9X),
   79         MII_PHY_END
   80 };
   81 
   82 static const struct mii_phy_funcs axphy_funcs = {
   83         axphy_service,
   84         axphy_status,
   85         mii_phy_reset
   86 };
   87 
   88 static int
   89 axphy_probe(device_t dev)
   90 {
   91 
   92         return (mii_phy_dev_probe(dev, axphys, BUS_PROBE_DEFAULT));
   93 }
   94 
   95 static int
   96 axphy_attach(device_t dev)
   97 {
   98         struct mii_softc *sc;
   99 
  100         sc = device_get_softc(dev);
  101 
  102         mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE,
  103             &axphy_funcs, 1);
  104         mii_phy_setmedia(sc);
  105 
  106         return (0);
  107 }
  108 
  109 static int
  110 axphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
  111 {
  112 
  113         switch (cmd) {
  114         case MII_POLLSTAT:
  115                 break;
  116 
  117         case MII_MEDIACHG:
  118                 mii_phy_setmedia(sc);
  119                 break;
  120 
  121         case MII_TICK:
  122                 if (mii_phy_tick(sc) == EJUSTRETURN)
  123                         return (0);
  124                 break;
  125         }
  126 
  127         /* Update the media status. */
  128         PHY_STATUS(sc);
  129 
  130         /* Callback if something changed. */
  131         mii_phy_update(sc, cmd);
  132         return (0);
  133 }
  134 
  135 static void
  136 axphy_status(struct mii_softc *sc)
  137 {
  138         struct mii_data *mii = sc->mii_pdata;
  139         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  140         int bmsr, bmcr;
  141 
  142         mii->mii_media_status = IFM_AVALID;
  143         mii->mii_media_active = IFM_ETHER;
  144 
  145         bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
  146         if (bmsr & BMSR_LINK)
  147                 mii->mii_media_status |= IFM_ACTIVE;
  148 
  149         bmcr = PHY_READ(sc, MII_BMCR);
  150         if (bmcr & BMCR_ISO) {
  151                 mii->mii_media_active |= IFM_NONE;
  152                 mii->mii_media_status = 0;
  153                 return;
  154         }
  155 
  156         if (bmcr & BMCR_LOOP)
  157                 mii->mii_media_active |= IFM_LOOP;
  158 
  159         if (bmcr & BMCR_AUTOEN) {
  160                 if ((bmsr & BMSR_ACOMP) == 0) {
  161                         mii->mii_media_active |= IFM_NONE;
  162                         return;
  163                 }
  164 
  165 #if 0
  166                 scr = PHY_READ(sc, MII_AXPHY_SCR);
  167                 if (scr & SCR_S100)
  168                         mii->mii_media_active |= IFM_100_TX;
  169                 else
  170                         mii->mii_media_active |= IFM_10_T;
  171                 if (scr & SCR_FDX)
  172                         mii->mii_media_active |=
  173                             IFM_FDX | mii_phy_flowstatus(sc);
  174                 else
  175                         mii->mii_media_active |= IFM_HDX;
  176 #endif
  177         } else
  178                 mii->mii_media_active = ife->ifm_media;
  179 }

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

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