/*- * Copyright (c) 2000,2001 Jonathan Chen. * 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, * without modification, immediately at the beginning of the file. * 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 __FBSDID("$FreeBSD$"); /* * Driver for the TDK 78Q2120 MII * * References: * Datasheet for the 78Q2120 - http://www.tsc.tdk.com/lan/78q2120.pdf * Most of this code stolen from ukphy.c */ /* * The TDK 78Q2120 is found on some Xircom X3201 based cardbus cards, * also spotted on some 3C575 cards. It's just like any other normal * phy, except it does auto negotiation in a different way. */ #include #include #include #include #include #include #include #include #include #include #include #include "miidevs.h" #include #include "miibus_if.h" static int tdkphy_probe(device_t); static int tdkphy_attach(device_t); static device_method_t tdkphy_methods[] = { /* device interface */ DEVMETHOD(device_probe, tdkphy_probe), DEVMETHOD(device_attach, tdkphy_attach), DEVMETHOD(device_detach, mii_phy_detach), DEVMETHOD(device_shutdown, bus_generic_shutdown), { 0, 0 } }; static devclass_t tdkphy_devclass; static driver_t tdkphy_driver = { "tdkphy", tdkphy_methods, sizeof(struct mii_softc) }; DRIVER_MODULE(tdkphy, miibus, tdkphy_driver, tdkphy_devclass, 0, 0); static int tdkphy_service(struct mii_softc *, struct mii_data *, int); static void tdkphy_status(struct mii_softc *); static const struct mii_phydesc tdkphys[] = { MII_PHY_DESC(TDK, 78Q2120), MII_PHY_END }; static int tdkphy_probe(device_t dev) { return (mii_phy_dev_probe(dev, tdkphys, BUS_PROBE_DEFAULT)); } static int tdkphy_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); 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 = tdkphy_service; sc->mii_pdata = mii; mii->mii_instance++; /* * Apparently, we can't do loopback on this PHY. */ sc->mii_flags |= MIIF_NOLOOP; mii_phy_reset(sc); sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; device_printf(dev, " "); mii_phy_add_media(sc); printf("\n"); MIIBUS_MEDIAINIT(sc->mii_dev); return (0); } static int tdkphy_service(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. */ tdkphy_status(sc); if (sc->mii_pdata->mii_media_active & IFM_FDX) PHY_WRITE(sc, MII_BMCR, PHY_READ(sc, MII_BMCR) | BMCR_FDX); else PHY_WRITE(sc, MII_BMCR, PHY_READ(sc, MII_BMCR) & ~BMCR_FDX); /* Callback if something changed. */ mii_phy_update(sc, cmd); return (0); } static void tdkphy_status(struct mii_softc *phy) { struct mii_data *mii = phy->mii_pdata; struct ifmedia_entry *ife = mii->mii_media.ifm_cur; int bmsr, bmcr, anlpar, diag; mii->mii_media_status = IFM_AVALID; mii->mii_media_active = IFM_ETHER; bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR); if (bmsr & BMSR_LINK) mii->mii_media_status |= IFM_ACTIVE; bmcr = PHY_READ(phy, 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) { /* * NWay autonegotiation takes the highest-order common * bit of the ANAR and ANLPAR (i.e. best media advertised * both by us and our link partner). */ if ((bmsr & BMSR_ACOMP) == 0) { /* Erg, still trying, I guess... */ mii->mii_media_active |= IFM_NONE; return; } anlpar = PHY_READ(phy, MII_ANAR) & PHY_READ(phy, MII_ANLPAR); /* * ANLPAR doesn't get set on my card, but we check it anyway, * since it is mentioned in the 78Q2120 specs. */ if (anlpar & ANLPAR_TX_FD) mii->mii_media_active |= IFM_100_TX|IFM_FDX; else if (anlpar & ANLPAR_T4) mii->mii_media_active |= IFM_100_T4; else if (anlpar & ANLPAR_TX) mii->mii_media_active |= IFM_100_TX; else if (anlpar & ANLPAR_10_FD) mii->mii_media_active |= IFM_10_T|IFM_FDX; else if (anlpar & ANLPAR_10) mii->mii_media_active |= IFM_10_T; else { /* * ANLPAR isn't set, which leaves two possibilities: * 1) Auto negotiation failed * 2) Auto negotiation completed, but the card forgot * to set ANLPAR. * So we check the MII_DIAG(18) register... */ diag = PHY_READ(phy, MII_DIAG); if (diag & DIAG_NEGFAIL) /* assume 10baseT if no neg */ mii->mii_media_active |= IFM_10_T; else { if (diag & DIAG_DUPLEX) mii->mii_media_active |= IFM_FDX; if (diag & DIAG_RATE_100) mii->mii_media_active |= IFM_100_TX; else mii->mii_media_active |= IFM_10_T; } } } else mii->mii_media_active = ife->ifm_media; }