/* $NetBSD: tlphy.c,v 1.7 1998/08/10 23:59:58 thorpej Exp $ */ /*- * Copyright (c) 1998 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. * 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 Texas Instruments's ThunderLAN PHYs */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* ThunderLAN PHY can only be on a ThunderLAN */ #include struct tlphy_softc { struct mii_softc sc_mii; /* generic PHY */ int sc_capabilities; int sc_ticks; int sc_tlphycap; int sc_active; }; int tlphymatch __P((struct device *, struct cfdata *, void *)); void tlphyattach __P((struct device *, struct device *, void *)); struct cfattach tlphy_ca = { sizeof(struct tlphy_softc), tlphymatch, tlphyattach }; #define TLPHY_READ(sc, reg) \ (*(sc)->sc_mii.mii_pdata->mii_readreg)((sc)->sc_mii.mii_dev.dv_parent, \ (sc)->sc_mii.mii_phy, (reg)) #define TLPHY_WRITE(sc, reg, val) \ (*(sc)->sc_mii.mii_pdata->mii_writereg)((sc)->sc_mii.mii_dev.dv_parent, \ (sc)->sc_mii.mii_phy, (reg), (val)) int tlphy_service __P((struct mii_softc *, struct mii_data *, int)); void tlphy_reset __P((struct tlphy_softc *)); void tlphy_auto __P((struct tlphy_softc *)); void tlphy_status __P((struct tlphy_softc *)); int tlphymatch(parent, match, aux) struct device *parent; struct cfdata *match; void *aux; { struct mii_attach_args *ma = aux; if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_TI && MII_MODEL(ma->mii_id2) == MII_MODEL_TI_TLAN10T) return (1); return (0); } void tlphyattach(parent, self, aux) struct device *parent, *self; void *aux; { struct tlphy_softc *sc = (struct tlphy_softc *)self; struct tl_softc *tlsc = (struct tl_softc *)self->dv_parent; struct mii_attach_args *ma = aux; struct mii_data *mii = ma->mii_data; const char *sep = ""; printf(": %s, rev. %d\n", MII_STR_TI_TLAN10T, MII_REV(ma->mii_id2)); 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; tlphy_reset(sc); /* * 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_tlphycap = tlsc->tl_product->tp_tlphymedia; if ((sc->sc_tlphycap & TLPHY_MEDIA_NO_10_T) == 0) sc->sc_capabilities = TLPHY_READ(sc, MII_BMSR) & ma->mii_capmask; else sc->sc_capabilities = 0; #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); if ((sc->sc_tlphycap & TLPHY_MEDIA_NO_10_T) == 0) 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 = ", " printf("%s: ", sc->sc_mii.mii_dev.dv_xname); if (sc->sc_tlphycap) { if (sc->sc_tlphycap == TLPHY_MEDIA_10_2) { ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_2, 0, sc->sc_mii.mii_inst), 0); PRINT("10base2/BNC"); } else { ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_5, 0, sc->sc_mii.mii_inst), 0); PRINT("10base5/AUI"); } } if (sc->sc_capabilities & BMSR_MEDIAMASK) { printf(sep); mii_add_media(mii, sc->sc_capabilities, sc->sc_mii.mii_inst); } else if (sc->sc_tlphycap == 0) printf("no media present"); printf("\n"); #undef ADD #undef PRINT } int tlphy_service(self, mii, cmd) struct mii_softc *self; struct mii_data *mii; int cmd; { struct tlphy_softc *sc = (struct tlphy_softc *)self; int reg; switch (cmd) { case MII_POLLSTAT: /* * If we're not polling our PHY instance, just return. */ if (IFM_INST(mii->mii_media.ifm_media) != sc->sc_mii.mii_inst) return (0); break; case MII_MEDIACHG: /* * If the media indicates a different PHY instance, * isolate ourselves. */ if (IFM_INST(mii->mii_media.ifm_media) != sc->sc_mii.mii_inst) { reg = TLPHY_READ(sc, MII_BMCR); TLPHY_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(mii->mii_media.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". */ tlphy_auto(sc); break; case IFM_10_2: case IFM_10_5: TLPHY_WRITE(sc, MII_BMCR, 0); TLPHY_WRITE(sc, MII_TLPHY_CTRL, CTRL_AUISEL); delay(100000); break; default: TLPHY_WRITE(sc, MII_TLPHY_CTRL, 0); delay(100000); TLPHY_WRITE(sc, MII_ANAR, mii_anar(mii->mii_media.ifm_media)); TLPHY_WRITE(sc, MII_BMCR, mii->mii_media.ifm_cur->ifm_data); } break; case MII_TICK: /* * If we're not currently selected, just return. */ if (IFM_INST(mii->mii_media.ifm_media) != sc->sc_mii.mii_inst) return (0); /* * Only used for autonegotiation. */ if (IFM_SUBTYPE(mii->mii_media.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. * * XXX WHAT ABOUT CHECKING LINK ON THE BNC/AUI?! */ reg = TLPHY_READ(sc, MII_BMSR) | TLPHY_READ(sc, MII_BMSR); if (reg & BMSR_LINK) return (0); /* * Only retry autonegotiation every 5 seconds. */ if (++sc->sc_ticks != 5) return (0); sc->sc_ticks = 0; tlphy_reset(sc); tlphy_auto(sc); break; } /* Update the media status. */ tlphy_status(sc); /* Callback if something changed. */ if (sc->sc_active != mii->mii_media_active || cmd == MII_MEDIACHG) { (*mii->mii_statchg)(sc->sc_mii.mii_dev.dv_parent); sc->sc_active = mii->mii_media_active; } return (0); } void tlphy_status(sc) 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; bmsr = TLPHY_READ(sc, MII_BMSR) | TLPHY_READ(sc, MII_BMSR); if (bmsr & BMSR_LINK) mii->mii_media_status |= IFM_ACTIVE; bmcr = TLPHY_READ(sc, MII_BMCR); if (bmcr & BMCR_ISO) { mii->mii_media_active |= IFM_NONE; mii->mii_media_status = 0; return; } tlctrl = TLPHY_READ(sc, MII_TLPHY_CTRL); if (tlctrl & CTRL_AUISEL) { if (sc->sc_tlphycap == TLPHY_MEDIA_10_2) mii->mii_media_status |= IFM_10_2; else mii->mii_media_status |= IFM_10_5; /* XXX Can we sense carrier here? */ mii->mii_media_status = 0; return; } 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; mii->mii_media_active |= IFM_10_T; } void tlphy_auto(sc) struct tlphy_softc *sc; { int aner, anlpar, bmsr, i; TLPHY_WRITE(sc, MII_ANAR, BMSR_MEDIA_TO_ANAR(sc->sc_capabilities) | ANAR_CSMA); TLPHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN | BMCR_STARTNEG); /* Wait 500ms for it to complete. */ for (i = 0; i < 500; i++) { if ((bmsr = TLPHY_READ(sc, MII_BMSR)) & BMSR_ACOMP) return; delay(1000); } if ((bmsr & BMSR_ACOMP) == 0) { printf("%s: autonegotiation failed to complete\n", sc->sc_mii.mii_dev.dv_xname); return; } /* * Grr, braindead ThunderLAN PHY doesn't self-configure * after autonegotiation. We have to do it ourselves * based on the link partner status. */ aner = TLPHY_READ(sc, MII_ANER); if (aner & ANER_LPAN) { anlpar = TLPHY_READ(sc, MII_ANLPAR) & TLPHY_READ(sc, MII_ANAR); if (anlpar & ANAR_10_FD) { TLPHY_WRITE(sc, MII_BMCR, BMCR_FDX); return; } } /* * Just assume we're not in full-duplex mode. * XXX Check link and try AUI/BNC? */ TLPHY_WRITE(sc, MII_BMCR, 0); } void tlphy_reset(sc) struct tlphy_softc *sc; { int reg, i; TLPHY_WRITE(sc, MII_BMCR, BMCR_RESET|BMCR_ISO); /* Wait 100ms for it to complete. */ for (i = 0; i < 100; i++) { reg = TLPHY_READ(sc, MII_BMCR); if ((reg & BMCR_RESET) == 0) break; delay(1000); } /* Make sure the PHY is isolated. */ if (sc->sc_mii.mii_inst != 0) TLPHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); }