axphy.c

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2009 M. Warner Losh <imp@FreeBSD.org>
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice unmodified, this list of conditions, and the following
   11  *    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 AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  */
   28 #include <sys/cdefs.h>
   29 __FBSDID("$FreeBSD$");
   30 
   31 /*
   32  * driver for internal phy in the AX88x9x chips.
   33  */
   34 
   35 #include <sys/param.h>
   36 #include <sys/systm.h>
   37 #include <sys/kernel.h>
   38 #include <sys/module.h>
   39 #include <sys/socket.h>
   40 #include <sys/bus.h>
   41 
   42 #include <net/if.h>
   43 #include <net/if_media.h>
   44 
   45 #include <dev/mii/mii.h>
   46 #include <dev/mii/miivar.h>
   47 #include "miidevs.h"
   48 
   49 #include "miibus_if.h"
   50 
   51 static int      axphy_probe(device_t dev);
   52 static int      axphy_attach(device_t dev);
   53 
   54 static device_method_t axphy_methods[] = {
   55         /* device interface */
   56         DEVMETHOD(device_probe,         axphy_probe),
   57         DEVMETHOD(device_attach,        axphy_attach),
   58         DEVMETHOD(device_detach,        mii_phy_detach),
   59         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
   60         DEVMETHOD_END
   61 };
   62 
   63 static driver_t axphy_driver = {
   64         "axphy",
   65         axphy_methods,
   66         sizeof(struct mii_softc)
   67 };
   68 
   69 DRIVER_MODULE(axphy, miibus, axphy_driver, 0, 0);
   70 
   71 static int      axphy_service(struct mii_softc *, struct mii_data *, int);
   72 static void     axphy_status(struct mii_softc *);
   73 
   74 static const struct mii_phydesc axphys[] = {
   75         MII_PHY_DESC(xxASIX, AX88X9X),
   76         MII_PHY_END
   77 };
   78 
   79 static const struct mii_phy_funcs axphy_funcs = {
   80         axphy_service,
   81         axphy_status,
   82         mii_phy_reset
   83 };
   84 
   85 static int
   86 axphy_probe(device_t dev)
   87 {
   88 
   89         return (mii_phy_dev_probe(dev, axphys, BUS_PROBE_DEFAULT));
   90 }
   91 
   92 static int
   93 axphy_attach(device_t dev)
   94 {
   95         struct mii_softc *sc;
   96 
   97         sc = device_get_softc(dev);
   98 
   99         mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE,
  100             &axphy_funcs, 1);
  101         mii_phy_setmedia(sc);
  102 
  103         return (0);
  104 }
  105 
  106 static int
  107 axphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
  108 {
  109 
  110         switch (cmd) {
  111         case MII_POLLSTAT:
  112                 break;
  113 
  114         case MII_MEDIACHG:
  115                 mii_phy_setmedia(sc);
  116                 break;
  117 
  118         case MII_TICK:
  119                 if (mii_phy_tick(sc) == EJUSTRETURN)
  120                         return (0);
  121                 break;
  122         }
  123 
  124         /* Update the media status. */
  125         PHY_STATUS(sc);
  126 
  127         /* Callback if something changed. */
  128         mii_phy_update(sc, cmd);
  129         return (0);
  130 }
  131 
  132 static void
  133 axphy_status(struct mii_softc *sc)
  134 {
  135         struct mii_data *mii = sc->mii_pdata;
  136         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  137         int bmsr, bmcr;
  138 
  139         mii->mii_media_status = IFM_AVALID;
  140         mii->mii_media_active = IFM_ETHER;
  141 
  142         bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
  143         if (bmsr & BMSR_LINK)
  144                 mii->mii_media_status |= IFM_ACTIVE;
  145 
  146         bmcr = PHY_READ(sc, MII_BMCR);
  147         if (bmcr & BMCR_ISO) {
  148                 mii->mii_media_active |= IFM_NONE;
  149                 mii->mii_media_status = 0;
  150                 return;
  151         }
  152 
  153         if (bmcr & BMCR_LOOP)
  154                 mii->mii_media_active |= IFM_LOOP;
  155 
  156         if (bmcr & BMCR_AUTOEN) {
  157                 if ((bmsr & BMSR_ACOMP) == 0) {
  158                         mii->mii_media_active |= IFM_NONE;
  159                         return;
  160                 }
  161 
  162 #if 0
  163                 scr = PHY_READ(sc, MII_AXPHY_SCR);
  164                 if (scr & SCR_S100)
  165                         mii->mii_media_active |= IFM_100_TX;
  166                 else
  167                         mii->mii_media_active |= IFM_10_T;
  168                 if (scr & SCR_FDX)
  169                         mii->mii_media_active |=
  170                             IFM_FDX | mii_phy_flowstatus(sc);
  171                 else
  172                         mii->mii_media_active |= IFM_HDX;
  173 #endif
  174         } else
  175                 mii->mii_media_active = ife->ifm_media;
  176 }

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

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