/* $OpenBSD: bmtphy.c,v 1.5 2002/03/14 01:26:57 millert Exp $ */ /* $NetBSD: nsphy.c,v 1.25 2000/02/02 23:34:57 thorpej Exp $ */ /*- * Copyright (c) 2001 Theo de Raadt * * 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 REGENTS 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 REGENTS 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. */ /* * driver for Broadcom BCM5201/5202 Mini-Theta ethernet 10/100 PHY * Data Sheet available from Broadcom */ #include #include #include #include #include #include #include #include #include #include #include #include #include int bmtphymatch(struct device *, void *, void *); void bmtphyattach(struct device *, struct device *, void *); struct cfattach bmtphy_ca = { sizeof(struct mii_softc), bmtphymatch, bmtphyattach, mii_phy_detach, mii_phy_activate }; struct cfdriver bmtphy_cd = { NULL, "bmtphy", DV_DULL }; int bmtphy_service(struct mii_softc *, struct mii_data *, int); void bmtphy_status(struct mii_softc *); void bmtphy_reset(struct mii_softc *); int bmtphymatch(parent, match, aux) struct device *parent; void *match; void *aux; { struct mii_attach_args *ma = aux; if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_BROADCOM && MII_MODEL(ma->mii_id2) == MII_MODEL_BROADCOM_BCM5201) return (10); if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_BROADCOM && MII_MODEL(ma->mii_id2) == MII_MODEL_BROADCOM_BCM5221) return (10); return (0); } void bmtphyattach(parent, self, aux) struct device *parent; struct device *self; void *aux; { struct mii_softc *sc = (struct mii_softc *)self; struct mii_attach_args *ma = aux; struct mii_data *mii = ma->mii_data; char *model; if (MII_MODEL(ma->mii_id2) == MII_MODEL_BROADCOM_BCM5201) model = MII_STR_BROADCOM_BCM5201; else if (MII_MODEL(ma->mii_id2) == MII_MODEL_BROADCOM_BCM5221) model = MII_STR_BROADCOM_BCM5221; printf(": %s, rev. %d\n", model, MII_REV(ma->mii_id2)); sc->mii_inst = mii->mii_instance; sc->mii_phy = ma->mii_phyno; sc->mii_service = bmtphy_service; sc->mii_status = bmtphy_status; sc->mii_pdata = mii; sc->mii_flags = mii->mii_flags; sc->mii_anegticks = 5; bmtphy_reset(sc); sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; if (sc->mii_capabilities & BMSR_MEDIAMASK) mii_phy_add_media(sc); } int bmtphy_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; if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) return (ENXIO); 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); /* * 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 != sc->mii_anegticks) return (0); sc->mii_ticks = 0; bmtphy_reset(sc); if (mii_phy_auto(sc, 0) == EJUSTRETURN) return (0); 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); } void bmtphy_status(sc) struct mii_softc *sc; { struct mii_data *mii = sc->mii_pdata; struct ifmedia_entry *ife = mii->mii_media.ifm_cur; int bmsr, bmcr, auxc; mii->mii_media_status = IFM_AVALID; mii->mii_media_active = IFM_ETHER; bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); if (bmsr & BMSR_LINK) mii->mii_media_status |= IFM_ACTIVE; bmcr = PHY_READ(sc, 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) { /* * The later are only valid if autonegotiation * has completed (or it's disabled). */ if ((bmsr & BMSR_ACOMP) == 0) { /* Erg, still trying, I guess... */ mii->mii_media_active |= IFM_NONE; return; } auxc = PHY_READ(sc, MII_BMTPHY_AUXC); if (auxc & AUXC_SP100) mii->mii_media_active |= IFM_100_TX; else mii->mii_media_active |= IFM_10_T; if (auxc & AUXC_FDX) mii->mii_media_active |= IFM_FDX; } else mii->mii_media_active = ife->ifm_media; } void bmtphy_reset(sc) struct mii_softc *sc; { int anar; mii_phy_reset(sc); anar = PHY_READ(sc, MII_ANAR); anar |= BMSR_MEDIA_TO_ANAR(PHY_READ(sc, MII_BMSR)); PHY_WRITE(sc, MII_ANAR, anar); /* Chip resets with FDX bit not set */ PHY_WRITE(sc, MII_BMCR, PHY_READ(sc, MII_BMCR) | BMCR_S100|BMCR_AUTOEN|BMCR_STARTNEG|BMCR_FDX); }