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

     /*-
      * Copyright (c) 2009, M. Warner Losh
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
      *    notice unmodified, this list of conditions, and the following
     *    disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     */
    #include <sys/cdefs.h>
    __FBSDID("$FreeBSD$");
    
    /*
     * driver for internal phy in the AX88x9x chips.
     */
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/kernel.h>
    #include <sys/module.h>
    #include <sys/socket.h>
    #include <sys/bus.h>
    
    #include <net/if.h>
    #include <net/if_media.h>
    
    #include <dev/mii/mii.h>
    #include <dev/mii/miivar.h>
    #include "miidevs.h"
    
    #include "miibus_if.h"
    
    static int      axphy_probe(device_t dev);
    static int      axphy_attach(device_t dev);
    
    static device_method_t axphy_methods[] = {
            /* device interface */
            DEVMETHOD(device_probe,         axphy_probe),
            DEVMETHOD(device_attach,        axphy_attach),
            DEVMETHOD(device_detach,        mii_phy_detach),
            DEVMETHOD(device_shutdown,      bus_generic_shutdown),
            DEVMETHOD_END
    };
    
    static devclass_t axphy_devclass;
    
    static driver_t axphy_driver = {
            "axphy",
            axphy_methods,
            sizeof(struct mii_softc)
    };
    
    DRIVER_MODULE(axphy, miibus, axphy_driver, axphy_devclass, 0, 0);
    
    static int      axphy_service(struct mii_softc *, struct mii_data *, int);
    static void     axphy_status(struct mii_softc *);
    
    static const struct mii_phydesc axphys[] = {
            MII_PHY_DESC(xxASIX, AX88X9X),
            MII_PHY_END
    };
    
    static const struct mii_phy_funcs axphy_funcs = {
            axphy_service,
            axphy_status,
            mii_phy_reset
    };
    
    static int
    axphy_probe(device_t dev)
    {
    
            return (mii_phy_dev_probe(dev, axphys, BUS_PROBE_DEFAULT));
    }
    
    static int
    axphy_attach(device_t dev)
    {
            struct mii_softc *sc;
    
            sc = device_get_softc(dev);
    
           mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE,
               &axphy_funcs, 1);
           mii_phy_setmedia(sc);
   
           return (0);
   }
   
   static int
   axphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
   {
   
           switch (cmd) {
           case MII_POLLSTAT:
                   break;
   
           case MII_MEDIACHG:
                   /*
                    * If the interface is not up, don't do anything.
                    */
                   if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
                           break;
   
                   mii_phy_setmedia(sc);
                   break;
   
           case MII_TICK:
                   if (mii_phy_tick(sc) == EJUSTRETURN)
                           return (0);
                   break;
           }
   
           /* Update the media status. */
           PHY_STATUS(sc);
   
           /* Callback if something changed. */
           mii_phy_update(sc, cmd);
           return (0);
   }
   
   static void
   axphy_status(struct mii_softc *sc)
   {
           struct mii_data *mii = sc->mii_pdata;
           struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
           int bmsr, bmcr;
   
           mii->mii_media_status = IFM_AVALID;
           mii->mii_media_active = IFM_ETHER;
   
           bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
           if (bmsr & BMSR_LINK)
                   mii->mii_media_status |= IFM_ACTIVE;
   
           bmcr = PHY_READ(sc, MII_BMCR);
           if (bmcr & BMCR_ISO) {
                   mii->mii_media_active |= IFM_NONE;
                   mii->mii_media_status = 0;
                   return;
           }
   
           if (bmcr & BMCR_LOOP)
                   mii->mii_media_active |= IFM_LOOP;
   
           if (bmcr & BMCR_AUTOEN) {
                   if ((bmsr & BMSR_ACOMP) == 0) {
                           mii->mii_media_active |= IFM_NONE;
                           return;
                   }
   
   #if 0
                   scr = PHY_READ(sc, MII_AXPHY_SCR);
                   if (scr & SCR_S100)
                           mii->mii_media_active |= IFM_100_TX;
                   else
                           mii->mii_media_active |= IFM_10_T;
                   if (scr & SCR_FDX)
                           mii->mii_media_active |=
                               IFM_FDX | mii_phy_flowstatus(sc);
                   else
                           mii->mii_media_active |= IFM_HDX;
   #endif
           } else
                   mii->mii_media_active = ife->ifm_media;
   }

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