text: /*	$NetBSD: ukphy.c,v 1.2 1999/04/23 04:24:32 thorpej Exp $	*/
  
  /*-
   * 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, and by Frank van der Linden.
   *
   * 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.
   */
  
  /*
   * driver for generic unknown PHYs
   */
  
  #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 "miibus_if.h"
  
  #if !defined(lint)
  static const char rcsid[] =
    "$FreeBSD: src/sys/dev/mii/ukphy.c,v 1.12 2002/10/14 22:31:52 alfred Exp $";
  #endif
  
  static int ukphy_probe(device_t);
  static int ukphy_attach(device_t);
  
  static device_method_t ukphy_methods[] = {
  	/* device interface */
  	DEVMETHOD(device_probe,		ukphy_probe),
  	DEVMETHOD(device_attach,	ukphy_attach),
  	DEVMETHOD(device_detach,	mii_phy_detach),
  	DEVMETHOD(device_shutdown,	bus_generic_shutdown),
  	{ 0, 0 }
  };
  
  static devclass_t ukphy_devclass;
  
  static driver_t ukphy_driver = {
  	"ukphy",
  	ukphy_methods,
  	sizeof(struct mii_softc)
  };
  
  DRIVER_MODULE(ukphy, miibus, ukphy_driver, ukphy_devclass, 0, 0);
  
  static int	ukphy_service(struct mii_softc *, struct mii_data *, int);
  
  static int
  ukphy_probe(dev)
  	device_t		dev;
  {
  
  	/*
  	 * We know something is here, so always match at a low priority.
  	 */
  	device_set_desc(dev, "Generic IEEE 802.3u media interface");
  	return (-100);
  }
  
  static int
  ukphy_attach(dev)
  	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);
  
  	if (bootverbose)
  		device_printf(dev, "OUI 0x%06x, model 0x%04x, rev. %d\n",
  		    MII_OUI(ma->mii_id1, ma->mii_id2),
  		    MII_MODEL(ma->mii_id2), MII_REV(ma->mii_id2));
  
  	sc->mii_inst = mii->mii_instance;
  	sc->mii_phy = ma->mii_phyno;
  	sc->mii_service = ukphy_service;
  	sc->mii_pdata = mii;
  
  	mii->mii_instance++;
  
  	sc->mii_flags |= MIIF_NOISOLATE;
  
  	mii_phy_reset(sc);
  
  	sc->mii_capabilities =
  	    PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
  	if (sc->mii_capabilities & BMSR_EXTSTAT)
  		sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
  	device_printf(dev, " ");
  	mii_phy_add_media(sc);
  	printf("\n");
  
  	MIIBUS_MEDIAINIT(sc->mii_dev);
  
  	return(0);
  }
  
  static int
  ukphy_service(sc, mii, cmd)
  	struct mii_softc *sc;
  	struct mii_data *mii;
  	int cmd;
  {
  	struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  	int reg;
  
  	switch (cmd) {
  	case MII_POLLSTAT:
  		/*
  		 * If we're not polling our PHY instance, just return.
  		 */
  		if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  			return (0);
  		break;
  
  	case MII_MEDIACHG:
  		/*
  		 * If the media indicates a different PHY instance,
  		 * isolate ourselves.
  		 */
  		if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
  			reg = PHY_READ(sc, MII_BMCR);
  			PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
  			return (0);
  		}
  
  		/*
  		 * 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 we're not currently selected, just return.
  		 */
  		if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  			return (0);
  		if (mii_phy_tick(sc) == EJUSTRETURN)
  			return (0);
  		break;
  	}
  
  	/* Update the media status. */
  	ukphy_status(sc);
  
  	/* Callback if something changed. */
  	mii_phy_update(sc, cmd);
  	return (0);
  }
  