diff options
Diffstat (limited to 'sys/dev/mii/exphy.c')
| -rw-r--r-- | sys/dev/mii/exphy.c | 311 |
1 files changed, 311 insertions, 0 deletions
diff --git a/sys/dev/mii/exphy.c b/sys/dev/mii/exphy.c new file mode 100644 index 0000000..86c624b --- /dev/null +++ b/sys/dev/mii/exphy.c @@ -0,0 +1,311 @@ +/* $NetBSD: exphy.c,v 1.16 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 3Com internal PHYs + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/kernel.h> +#include <sys/malloc.h> +#include <sys/socket.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 <dev/mii/miidevs.h> + +#include "miibus_if.h" + +#if !defined(lint) +static const char rcsid[] = + "$Id$"; +#endif + +static int exphy_probe __P((device_t)); +static int exphy_attach __P((device_t)); +static int exphy_detach __P((device_t)); + +static device_method_t exphy_methods[] = { + /* device interface */ + DEVMETHOD(device_probe, exphy_probe), + DEVMETHOD(device_attach, exphy_attach), + DEVMETHOD(device_detach, exphy_detach), + DEVMETHOD(device_shutdown, bus_generic_shutdown), + { 0, 0 } +}; + +static devclass_t exphy_devclass; + +static driver_t exphy_driver = { + "xlphy", + exphy_methods, + sizeof(struct mii_softc) +}; + +DRIVER_MODULE(xlphy, miibus, exphy_driver, exphy_devclass, 0, 0); + +int exphy_service __P((struct mii_softc *, struct mii_data *, int)); +void exphy_reset __P((struct mii_softc *)); + +static int exphy_probe(dev) + device_t dev; +{ + struct mii_attach_args *ma; + device_t parent; + + ma = device_get_ivars(dev); + parent = device_get_parent(device_get_parent(dev)); + + /* + * Argh, 3Com PHY reports oui == 0 model == 0! + */ + if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 || + MII_MODEL(ma->mii_id2) != 0) + return (ENXIO); + + /* + * Make sure the parent is an `ex'. + */ + if (strcmp(device_get_name(parent), "xl") != 0) + return (ENXIO); + + device_set_desc(dev, "3Com internal media interface"); + + return (0); +} + +static int exphy_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); + + sc->mii_inst = mii->mii_instance; + sc->mii_phy = ma->mii_phyno; + sc->mii_service = exphy_service; + sc->mii_pdata = mii; + + /* + * The 3Com PHY can never be isolated, so never allow non-zero + * instances! + */ + if (mii->mii_instance != 0) { + device_printf(dev, "ignoring this PHY, non-zero instance\n"); + return(ENXIO); + } + + mii->mii_instance++; + + sc->mii_flags |= MIIF_NOISOLATE; + +#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) + +#if 0 /* See above. */ + ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), + BMCR_ISO); +#endif + + ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), + BMCR_LOOP|BMCR_S100); + + exphy_reset(sc); + + sc->mii_capabilities = + PHY_READ(sc, MII_BMSR) & ma->mii_capmask; + device_printf(dev, " "); + if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) + printf("no media present"); + else + mii_add_media(mii, sc->mii_capabilities, + sc->mii_inst); + printf("\n"); +#undef ADD + MIIBUS_MEDIAINIT(sc->mii_dev); + return(0); +} + +static int exphy_detach(dev) + device_t dev; +{ + struct mii_softc *sc; + struct mii_data *mii; + + sc = device_get_softc(dev); + mii = device_get_softc(device_get_parent(dev)); + sc->mii_dev = NULL; + LIST_REMOVE(sc, mii_list); + + return(0); +} + +int +exphy_service(sc, mii, cmd) + struct mii_softc *sc; + struct mii_data *mii; + int cmd; +{ + struct ifmedia_entry *ife = mii->mii_media.ifm_cur; + + /* + * We can't isolate the 3Com PHY, so it has to be the only one! + */ + if (IFM_INST(ife->ifm_media) != sc->mii_inst) + panic("exphy_service: can't isolate 3Com PHY"); + + 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; + + switch (IFM_SUBTYPE(ife->ifm_media)) { + case IFM_AUTO: + /* + * If we're already in auto mode, just return. + */ + if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) + return (0); + (void) mii_phy_auto(sc, 1); + break; + case IFM_100_T4: + /* + * XXX Not supported as a manual setting right now. + */ + return (EINVAL); + default: + /* + * BMCR data is stored in the ifmedia entry. + */ + PHY_WRITE(sc, MII_ANAR, + mii_anar(ife->ifm_media)); + PHY_WRITE(sc, MII_BMCR, ife->ifm_data); + } + break; + + case MII_TICK: + /* + * Only used for autonegotiation. + */ + if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) + return (0); + + /* + * Is the interface even up? + */ + if ((mii->mii_ifp->if_flags & IFF_UP) == 0) + return (0); + + /* + * The 3Com PHY's autonegotiation doesn't need to be + * kicked; it continues in the background. + */ + break; + } + + /* Update the media status. */ + ukphy_status(sc); + + /* Callback if something changed. */ + if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { + MIIBUS_STATCHG(sc->mii_dev); + sc->mii_active = mii->mii_media_active; + } + return (0); +} + +void +exphy_reset(sc) + struct mii_softc *sc; +{ + + mii_phy_reset(sc); + + /* + * XXX 3Com PHY doesn't set the BMCR properly after + * XXX reset, which breaks autonegotiation. + */ + PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_AUTOEN|BMCR_FDX); +} |
