/* $NetBSD: tlphy.c,v 1.71.20.1 2023/06/21 22:11:29 martin Exp $ */ /*- * Copyright (c) 1998, 1999, 2000 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. */ /* * Driver for Texas Instruments's ThunderLAN PHYs */ #include __KERNEL_RCSID(0, "$NetBSD: tlphy.c,v 1.71.20.1 2023/06/21 22:11:29 martin Exp $"); #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_tlphycap; int sc_need_acomp; }; static int tlphymatch(device_t, cfdata_t, void *); static void tlphyattach(device_t, device_t, void *); CFATTACH_DECL_NEW(tlphy, sizeof(struct tlphy_softc), tlphymatch, tlphyattach, mii_phy_detach, mii_phy_activate); 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 mii_softc *); static const struct mii_phy_funcs tlphy_funcs = { tlphy_service, tlphy_status, mii_phy_reset, }; static const struct mii_phydesc tlphys[] = { MII_PHY_DESC(TI, TLAN10T), MII_PHY_END, }; static int tlphymatch(device_t parent, cfdata_t match, void *aux) { struct mii_attach_args *ma = aux; if (mii_phy_match(ma, tlphys) != NULL) return 10; return 0; } static void tlphyattach(device_t parent, device_t self, void *aux) { struct tlphy_softc *tsc = device_private(self); struct mii_softc *sc = &tsc->sc_mii; struct tl_softc *tlsc = device_private(device_parent(self)); struct mii_attach_args *ma = aux; struct mii_data *mii = ma->mii_data; const struct mii_phydesc *mpd; const char *sep = ""; mpd = mii_phy_match(ma, tlphys); aprint_naive(": Media interface\n"); aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); sc->mii_dev = self; sc->mii_inst = mii->mii_instance; sc->mii_phy = ma->mii_phyno; sc->mii_funcs = &tlphy_funcs; sc->mii_pdata = mii; sc->mii_flags = ma->mii_flags; mii_lock(mii); PHY_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. */ tsc->sc_tlphycap = tlsc->tl_product->tp_tlphymedia; if ((tsc->sc_tlphycap & TLPHY_MEDIA_NO_10_T) == 0) { PHY_READ(sc, MII_BMSR, &sc->mii_capabilities); sc->mii_capabilities &= ma->mii_capmask; } else sc->mii_capabilities = 0; mii_unlock(mii); #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) #define PRINT(str) \ do { \ aprint_normal("%s%s", sep, str); \ sep = ", "; \ } while (/* CONSTCOND */0) if (tsc->sc_tlphycap) { mii_lock(mii); sc->mii_anegticks = MII_ANEGTICKS; mii_unlock(mii); aprint_normal_dev(self, ""); if (tsc->sc_tlphycap & TLPHY_MEDIA_10_2) { ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_2, 0, sc->mii_inst), 0); PRINT("10base2"); } else if (tsc->sc_tlphycap & TLPHY_MEDIA_10_5) { ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_5, 0, sc->mii_inst), 0); PRINT("10base5"); } else PRINT("no media present"); aprint_normal("\n"); } if (sc->mii_capabilities & BMSR_MEDIAMASK) mii_phy_add_media(sc); else { /* * mii_phy_add_media() automatically install power handler, * but if_media_add() doesn't. Do it now. */ if (!pmf_device_register(self, NULL, mii_phy_resume)) { aprint_error_dev(self, "couldn't establish power handler\n"); } } #undef ADD #undef PRINT } static int tlphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) { struct tlphy_softc *tsc = (struct tlphy_softc *)sc; struct ifmedia_entry *ife = mii->mii_media.ifm_cur; uint16_t reg; KASSERT(mii_locked(mii)); if ((sc->mii_flags & MIIF_DOINGAUTO) == 0 && tsc->sc_need_acomp) tlphy_acomp(tsc); 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) { 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: (void) tlphy_auto(tsc); break; case IFM_10_2: case IFM_10_5: PHY_WRITE(sc, MII_BMCR, 0); PHY_WRITE(sc, MII_TLPHY_CTRL, CTRL_AUISEL); delay(100000); break; default: PHY_WRITE(sc, MII_TLPHY_CTRL, 0); delay(100000); 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; /* * XXX WHAT ABOUT CHECKING LINK ON THE BNC/AUI?! */ /* Only used for autonegotiation. */ if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) { sc->mii_ticks = 0; break; } /* * Check for link. * Read the status register twice; BMSR_LINK is latch-low. */ PHY_READ(sc, MII_BMSR, ®); PHY_READ(sc, MII_BMSR, ®); if (reg & BMSR_LINK) { sc->mii_ticks = 0; break; } /* * mii_ticks == 0 means it's the first tick after changing the * media or the link became down since the last tick * (see above), so break to update the status. */ if (sc->mii_ticks++ == 0) break; /* Only retry autonegotiation every mii_anegticks seconds. */ KASSERT(sc->mii_anegticks != 0); if (sc->mii_ticks < sc->mii_anegticks) break; tlphy_auto(tsc); break; case MII_DOWN: mii_phy_down(sc); return 0; } /* Update the media status. */ mii_phy_status(sc); /* Callback if something changed. */ mii_phy_update(sc, cmd); return 0; } static void tlphy_status(struct mii_softc *sc) { struct tlphy_softc *tsc = (struct tlphy_softc *)sc; struct mii_data *mii = sc->mii_pdata; uint16_t bmsr, bmcr, tlctrl; KASSERT(mii_locked(mii)); mii->mii_media_status = IFM_AVALID; mii->mii_media_active = IFM_ETHER; PHY_READ(sc, MII_BMCR, &bmcr); if (bmcr & BMCR_ISO) { mii->mii_media_active |= IFM_NONE; mii->mii_media_status = 0; return; } PHY_READ(sc, MII_TLPHY_CTRL, &tlctrl); if (tlctrl & CTRL_AUISEL) { if (tsc->sc_tlphycap & TLPHY_MEDIA_10_2) mii->mii_media_active |= IFM_10_2; else if (tsc->sc_tlphycap & TLPHY_MEDIA_10_5) mii->mii_media_active |= IFM_10_5; else printf("%s: AUI selected with no matching media !\n", device_xname(sc->mii_dev)); mii->mii_media_status |= IFM_ACTIVE; return; } PHY_READ(sc, MII_BMSR, &bmsr); PHY_READ(sc, MII_BMSR, &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 *tsc) { struct mii_softc *sc = &tsc->sc_mii; int error; switch ((error = mii_phy_auto(sc))) { case EJUSTRETURN: /* Flag that we need to program when it completes. */ tsc->sc_need_acomp = 1; break; default: tlphy_acomp(tsc); } return error; } static void tlphy_acomp(struct tlphy_softc *tsc) { struct mii_softc *sc = &tsc->sc_mii; uint16_t aner, anar, anlpar, result; tsc->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. */ PHY_READ(sc, MII_ANER, &aner); if (aner & ANER_LPAN) { PHY_READ(sc, MII_ANAR, &anar); PHY_READ(sc, MII_ANLPAR, &anlpar); result = anar & anlpar; if (result & ANAR_10_FD) { PHY_WRITE(sc, MII_BMCR, BMCR_FDX); return; } } PHY_WRITE(sc, MII_BMCR, 0); }