/* * Copyright (c) 2000 Berkeley Software Design, Inc. * Copyright (c) 1997, 1998, 1999, 2000 * Bill Paul . 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 Bill Paul. * 4. Neither the name of the author nor the names of any co-contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY Bill Paul 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 Bill Paul OR THE VOICES IN HIS HEAD * 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. * * $FreeBSD$ */ /* * driver for homePNA PHYs * This is really just a stub that allows us to identify homePNA-based * transceicers and display the link status. MII-based homePNA PHYs * only support one media type and no autonegotiation. If we were * really clever, we could tweak some of the vendor-specific registers * to optimize the link. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include "miibus_if.h" #if !defined(lint) static const char rcsid[] = "$FreeBSD$"; #endif static int pnaphy_probe __P((device_t)); static int pnaphy_attach __P((device_t)); static int pnaphy_detach __P((device_t)); static device_method_t pnaphy_methods[] = { /* device interface */ DEVMETHOD(device_probe, pnaphy_probe), DEVMETHOD(device_attach, pnaphy_attach), DEVMETHOD(device_detach, pnaphy_detach), DEVMETHOD(device_shutdown, bus_generic_shutdown), { 0, 0 } }; static devclass_t pnaphy_devclass; static driver_t pnaphy_driver = { "pnaphy", pnaphy_methods, sizeof(struct mii_softc) }; DRIVER_MODULE(pnaphy, miibus, pnaphy_driver, pnaphy_devclass, 0, 0); int pnaphy_service __P((struct mii_softc *, struct mii_data *, int)); static int pnaphy_probe(dev) device_t dev; { struct mii_attach_args *ma; ma = device_get_ivars(dev); if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_AMD && MII_MODEL(ma->mii_id2) == MII_MODEL_AMD_79c978) { device_set_desc(dev, MII_STR_AMD_79c978); return(0); } return(ENXIO); } static int pnaphy_attach(dev) device_t dev; { struct mii_softc *sc; struct mii_attach_args *ma; struct mii_data *mii; const char *sep = ""; 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 = pnaphy_service; sc->mii_pdata = mii; mii->mii_instance++; sc->mii_flags |= MIIF_NOISOLATE; #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) #define PRINT(s) printf("%s%s", sep, s); sep = ", " mii_phy_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 { ADD(IFM_MAKEWORD(IFM_ETHER, IFM_homePNA, 0, sc->mii_inst), 0); PRINT("HomePNA"); } ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), BMCR_ISO); printf("\n"); #undef ADD #undef PRINT MIIBUS_MEDIAINIT(sc->mii_dev); return(0); } static int pnaphy_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 pnaphy_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; switch (IFM_SUBTYPE(ife->ifm_media)) { case IFM_AUTO: case IFM_10_T: case IFM_100_TX: case IFM_100_T4: 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: /* * If we're not currently selected, just return. */ if (IFM_INST(ife->ifm_media) != sc->mii_inst) return (0); /* * 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); /* * Check to see if we have link. If we do, we don't * need to restart the autonegotiation process. Read * the BMSR twice in case it's latched. */ reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); if (reg & BMSR_LINK) return (0); /* * Only retry autonegotiation every 5 seconds. */ if (++sc->mii_ticks != 5) return (0); sc->mii_ticks = 0; mii_phy_reset(sc); if (mii_phy_auto(sc, 0) == EJUSTRETURN) return (0); break; } /* Update the media status. */ ukphy_status(sc); if (IFM_SUBTYPE(mii->mii_media_active) == IFM_10_T) mii->mii_media_active = IFM_ETHER|IFM_homePNA; /* 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); }