/* $NetBSD: tlphy.c,v 1.18 1999/05/14 11:40:28 drochner 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. * * 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. * * 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. * * 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 __FBSDID("$FreeBSD$"); /* * Driver for Texas Instruments's ThunderLAN PHYs */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include "miidevs.h" #include #include "miibus_if.h" struct tlphy_softc { struct mii_softc sc_mii; /* generic PHY */ int sc_need_acomp; }; static int tlphy_probe(device_t); static int tlphy_attach(device_t); static device_method_t tlphy_methods[] = { /* device interface */ DEVMETHOD(device_probe, tlphy_probe), DEVMETHOD(device_attach, tlphy_attach), DEVMETHOD(device_detach, mii_phy_detach), DEVMETHOD(device_shutdown, bus_generic_shutdown), { 0, 0 } }; static devclass_t tlphy_devclass; static driver_t tlphy_driver = { "tlphy", tlphy_methods, sizeof(struct tlphy_softc) }; DRIVER_MODULE(tlphy, miibus, tlphy_driver, tlphy_devclass, 0, 0); static int tlphy_service(struct mii_softc *, struct mii_data *, int); static int tlphy_auto(struct tlphy_softc *); static void tlphy_acomp(struct tlphy_softc *); static void tlphy_status(struct tlphy_softc *); static const struct mii_phydesc tlphys[] = { MII_PHY_DESC(xxTI, TLAN10T), MII_PHY_END }; static int tlphy_probe(device_t dev) { return (mii_phy_dev_probe(dev, tlphys, BUS_PROBE_DEFAULT)); } static int tlphy_attach(device_t dev) { device_t *devlist; struct tlphy_softc *sc; struct mii_softc *other; struct mii_attach_args *ma; struct mii_data *mii; const char *sep = ""; int capmask, devs, i; sc = device_get_softc(dev); ma = device_get_ivars(dev); sc->sc_mii.mii_dev = device_get_parent(dev); mii = device_get_softc(sc->sc_mii.mii_dev); LIST_INSERT_HEAD(&mii->mii_phys, &sc->sc_mii, mii_list); sc->sc_mii.mii_inst = mii->mii_instance; sc->sc_mii.mii_phy = ma->mii_phyno; sc->sc_mii.mii_service = tlphy_service; sc->sc_mii.mii_pdata = mii; capmask = 0xFFFFFFFF; if (mii->mii_instance && device_get_children(sc->sc_mii.mii_dev, &devlist, &devs) == 0) { for (i = 0; i < devs; i++) { if (strcmp(device_get_name(devlist[i]), "tlphy")) { other = device_get_softc(devlist[i]); capmask &= ~other->mii_capabilities; break; } } free(devlist, M_TEMP); } mii->mii_instance++; mii_phy_reset(&sc->sc_mii); /* * Note that if we're on a device that also supports 100baseTX, * we are not going to want to use the built-in 10baseT port, * since there will be another PHY on the MII wired up to the * UTP connector. The parent indicates this to us by specifying * the TLPHY_MEDIA_NO_10_T bit. */ sc->sc_mii.mii_capabilities = PHY_READ(&sc->sc_mii, MII_BMSR) & capmask /*ma->mii_capmask*/; #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->sc_mii.mii_inst), BMCR_ISO); ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_LOOP, sc->sc_mii.mii_inst), BMCR_LOOP); #define PRINT(s) printf("%s%s", sep, s); sep = ", " device_printf(dev, " "); ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_2, 0, sc->sc_mii.mii_inst), 0); PRINT("10base2/BNC"); ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_5, 0, sc->sc_mii.mii_inst), 0); PRINT("10base5/AUI"); if (sc->sc_mii.mii_capabilities & BMSR_MEDIAMASK) { printf("%s", sep); mii_add_media(&sc->sc_mii); } printf("\n"); #undef ADD #undef PRINT MIIBUS_MEDIAINIT(sc->sc_mii.mii_dev); return (0); } static int tlphy_service(struct mii_softc *self, struct mii_data *mii, int cmd) { struct tlphy_softc *sc = (struct tlphy_softc *)self; struct ifmedia_entry *ife = mii->mii_media.ifm_cur; int reg; if (sc->sc_need_acomp) tlphy_acomp(sc); 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: /* * The ThunderLAN PHY doesn't self-configure after * an autonegotiation cycle, so there's no such * thing as "already in auto mode". */ (void) tlphy_auto(sc); break; case IFM_10_2: case IFM_10_5: PHY_WRITE(&sc->sc_mii, MII_BMCR, 0); PHY_WRITE(&sc->sc_mii, MII_TLPHY_CTRL, CTRL_AUISEL); DELAY(100000); break; default: PHY_WRITE(&sc->sc_mii, MII_TLPHY_CTRL, 0); DELAY(100000); PHY_WRITE(&sc->sc_mii, MII_ANAR, mii_anar(ife->ifm_media)); PHY_WRITE(&sc->sc_mii, MII_BMCR, ife->ifm_data); } break; case MII_TICK: /* * Is the interface even up? */ if ((mii->mii_ifp->if_flags & IFF_UP) == 0) return (0); /* * Only used for autonegotiation. */ if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) break; /* * 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. * * XXX WHAT ABOUT CHECKING LINK ON THE BNC/AUI?! */ reg = PHY_READ(&sc->sc_mii, MII_BMSR) | PHY_READ(&sc->sc_mii, MII_BMSR); if (reg & BMSR_LINK) break; /* * Only retry autonegotiation every 5 seconds. */ if (++sc->sc_mii.mii_ticks <= MII_ANEGTICKS) break; sc->sc_mii.mii_ticks = 0; mii_phy_reset(&sc->sc_mii); tlphy_auto(sc); return (0); } /* Update the media status. */ tlphy_status(sc); /* Callback if something changed. */ mii_phy_update(&sc->sc_mii, cmd); return (0); } static void tlphy_status(struct tlphy_softc *sc) { struct mii_data *mii = sc->sc_mii.mii_pdata; int bmsr, bmcr, tlctrl; mii->mii_media_status = IFM_AVALID; mii->mii_media_active = IFM_ETHER; bmcr = PHY_READ(&sc->sc_mii, MII_BMCR); if (bmcr & BMCR_ISO) { mii->mii_media_active |= IFM_NONE; mii->mii_media_status = 0; return; } tlctrl = PHY_READ(&sc->sc_mii, MII_TLPHY_CTRL); if (tlctrl & CTRL_AUISEL) { mii->mii_media_status = 0; mii->mii_media_active = mii->mii_media.ifm_cur->ifm_media; return; } bmsr = PHY_READ(&sc->sc_mii, MII_BMSR) | PHY_READ(&sc->sc_mii, MII_BMSR); if (bmsr & BMSR_LINK) mii->mii_media_status |= IFM_ACTIVE; if (bmcr & BMCR_LOOP) mii->mii_media_active |= IFM_LOOP; /* * Grr, braindead ThunderLAN PHY doesn't have any way to * tell which media is actually active. (Note it also * doesn't self-configure after autonegotiation.) We * just have to report what's in the BMCR. */ if (bmcr & BMCR_FDX) mii->mii_media_active |= IFM_FDX; else mii->mii_media_active |= IFM_HDX; mii->mii_media_active |= IFM_10_T; } static int tlphy_auto(struct tlphy_softc *sc) { int error; switch ((error = mii_phy_auto(&sc->sc_mii))) { case EIO: /* * Just assume we're not in full-duplex mode. * XXX Check link and try AUI/BNC? */ PHY_WRITE(&sc->sc_mii, MII_BMCR, 0); break; case EJUSTRETURN: /* Flag that we need to program when it completes. */ sc->sc_need_acomp = 1; break; default: tlphy_acomp(sc); } return (error); } static void tlphy_acomp(struct tlphy_softc *sc) { int aner, anlpar; sc->sc_need_acomp = 0; /* * Grr, braindead ThunderLAN PHY doesn't self-configure * after autonegotiation. We have to do it ourselves * based on the link partner status. */ aner = PHY_READ(&sc->sc_mii, MII_ANER); if (aner & ANER_LPAN) { anlpar = PHY_READ(&sc->sc_mii, MII_ANLPAR) & PHY_READ(&sc->sc_mii, MII_ANAR); if (anlpar & ANAR_10_FD) { PHY_WRITE(&sc->sc_mii, MII_BMCR, BMCR_FDX); return; } } PHY_WRITE(&sc->sc_mii, MII_BMCR, 0); }