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

     /*-
      * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
      * All rights reserved.
      *
      * This code is derived from software contributed to The NetBSD Foundation
      * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
      * NASA Ames Research Center.
      *
      * 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, 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.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by the NetBSD
     *      Foundation, Inc. and its contributors.
     * 4. Neither the name of The NetBSD Foundation nor the names of its
     *    contributors may be used to endorse or promote products derived
     *    from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
     */
    
    /*-
     * Copyright (c) 1997 Manuel Bouyer.  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, 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.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by Manuel Bouyer.
     * 4. The name of the author may not be used to endorse or promote products
     *    derived from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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 Altima AC101 10/100 PHY
     */
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/kernel.h>
    #include <sys/socket.h>
    #include <sys/errno.h>
    #include <sys/module.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 <dev/mii/acphyreg.h>
    
    #include "miibus_if.h"
    
    static int acphy_probe(device_t);
    static int acphy_attach(device_t);
    
    static device_method_t acphy_methods[] = {
            /* device interface */
            DEVMETHOD(device_probe,         acphy_probe),
            DEVMETHOD(device_attach,        acphy_attach),
           DEVMETHOD(device_detach,        mii_phy_detach),
           DEVMETHOD(device_shutdown,      bus_generic_shutdown),
           { 0, 0 }
   };
   
   static devclass_t acphy_devclass;
   
   static driver_t acphy_driver = {
           "acphy",
           acphy_methods,
           sizeof(struct mii_softc)
   };
   
   DRIVER_MODULE(acphy, miibus, acphy_driver, acphy_devclass, 0, 0);
   
   static int      acphy_service(struct mii_softc *, struct mii_data *, int);
   static void     acphy_reset(struct mii_softc *);
   static void     acphy_status(struct mii_softc *);
   
   static const struct mii_phydesc acphys[] = {
           MII_PHY_DESC(xxALTIMA, AC101),
           MII_PHY_DESC(xxALTIMA, AC101L),
           /* XXX This is reported to work, but it's not from any data sheet. */
           MII_PHY_DESC(xxALTIMA, ACXXX),
           MII_PHY_END
   };
   
   static int
   acphy_probe(device_t dev)
   {
   
           return (mii_phy_dev_probe(dev, acphys, BUS_PROBE_DEFAULT));
   }
   
   static int
   acphy_attach(device_t dev)
   {
           struct mii_softc *sc;
           struct mii_attach_args *ma;
           struct mii_data *mii;
   
           sc = device_get_softc(dev);
           ma = device_get_ivars(dev);
           sc->mii_dev = device_get_parent(dev);
           mii = device_get_softc(sc->mii_dev);
           LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
   
           sc->mii_inst = mii->mii_instance;
           sc->mii_phy = ma->mii_phyno;
           sc->mii_service = acphy_service;
           sc->mii_pdata = mii;
   
           mii->mii_instance++;
   
           acphy_reset(sc);
   
           sc->mii_capabilities =
               PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
           device_printf(dev, " ");
   
   #define ADD(m, c)       ifmedia_add(&mii->mii_media, (m), (c), NULL)
           if ((PHY_READ(sc, MII_ACPHY_MCTL) & AC_MCTL_FX_SEL) != 0) {
                   sc->mii_flags |= MIIF_HAVEFIBER;
                   ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, 0, sc->mii_inst),
                       MII_MEDIA_100_TX);
                   printf("100baseFX, ");
                   ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, IFM_FDX, sc->mii_inst),
                       MII_MEDIA_100_TX_FDX);
                   printf("100baseFX-FDX, ");
           }
   #undef ADD
   
           mii_phy_add_media(sc);
           printf("\n");
   
           MIIBUS_MEDIAINIT(sc->mii_dev);
           return (0);
   }
   
   static int
   acphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
   {
           struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
           int reg;
   
           /*
            * If we're not selected, then do nothing, just isolate and power
            * down, if changing media.
            */
           if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
                   if (cmd == MII_MEDIACHG) {
                           reg = PHY_READ(sc, MII_BMCR);
                           PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO | BMCR_PDOWN);
                   }
   
                   return (0);
           }
   
           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;
   
                   /* Wake & deisolate up if necessary */
                   reg = PHY_READ(sc, MII_BMCR);
                   if (reg & (BMCR_ISO | BMCR_PDOWN))
                           PHY_WRITE(sc, MII_BMCR, reg & ~(BMCR_ISO | BMCR_PDOWN));
   
                   mii_phy_setmedia(sc);
                   break;
   
           case MII_TICK:
                   /*
                    * Is the interface even up?
                    */
                   if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
                           return (0);
   
                   /*
                    * This PHY's autonegotiation doesn't need to be kicked.
                    */
                   break;
           }
   
           /* Update the media status. */
           acphy_status(sc);
   
           /* Callback if something changed. */
           mii_phy_update(sc, cmd);
           return (0);
   }
   
   static void
   acphy_status(struct mii_softc *sc)
   {
           struct mii_data *mii = sc->mii_pdata;
           struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
           int bmsr, bmcr, diag;
   
           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) {
                           /* Erg, still trying, I guess... */
                           mii->mii_media_active |= IFM_NONE;
                           return;
                   }
                   diag = PHY_READ(sc, MII_ACPHY_DIAG);
                   if (diag & AC_DIAG_SPEED)
                           mii->mii_media_active |= IFM_100_TX;
                   else
                           mii->mii_media_active |= IFM_10_T;
   
                   if (diag & AC_DIAG_DUPLEX)
                           mii->mii_media_active |= IFM_FDX;
           } else
                   mii->mii_media_active = ife->ifm_media;
   }
   
   static void
   acphy_reset(struct mii_softc *sc)
   {
   
           mii_phy_reset(sc);
           PHY_WRITE(sc, MII_ACPHY_INT, 0);
   }

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