/* $OpenBSD: lxtphy.c,v 1.18 2013/12/28 03:30:41 deraadt Exp $ */ /* $NetBSD: lxtphy.c,v 1.19 2000/02/02 23:34:57 thorpej 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. */ /* * driver for Level One's LXT-970/971 ethernet 10/100 PHY * datasheet from www.level1.com */ #include #include #include #include #include #include #include #include #include #include #include #include int lxtphymatch(struct device *, void *, void *); void lxtphyattach(struct device *, struct device *, void *); struct cfattach lxtphy_ca = { sizeof(struct mii_softc), lxtphymatch, lxtphyattach, mii_phy_detach }; struct cfdriver lxtphy_cd = { NULL, "lxtphy", DV_DULL }; int lxtphy_service(struct mii_softc *, struct mii_data *, int); void lxtphy_status(struct mii_softc *); void lxtphy_reset(struct mii_softc *); const struct mii_phy_funcs lxtphy_funcs = { lxtphy_service, lxtphy_status, lxtphy_reset, }; const struct mii_phy_funcs lxtphy971_funcs = { lxtphy_service, ukphy_status, lxtphy_reset, }; static const struct mii_phydesc lxtphys[] = { { MII_OUI_xxLEVEL1, MII_MODEL_xxLEVEL1_LXT970, MII_STR_xxLEVEL1_LXT970 }, { MII_OUI_xxLEVEL1a, MII_MODEL_xxLEVEL1a_LXT971, MII_STR_xxLEVEL1a_LXT971 }, { 0, 0, NULL }, }; int lxtphymatch(parent, match, aux) struct device *parent; void *match; void *aux; { struct mii_attach_args *ma = aux; if (mii_phy_match(ma, lxtphys) != NULL) return (10); return (0); } void lxtphyattach(parent, self, aux) struct device *parent, *self; void *aux; { struct mii_softc *sc = (struct mii_softc *)self; struct mii_attach_args *ma = aux; struct mii_data *mii = ma->mii_data; const struct mii_phydesc *mpd; if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxLEVEL1 && MII_MODEL(ma->mii_id2) == MII_MODEL_xxLEVEL1_LXT970) { sc->mii_funcs = &lxtphy_funcs; } if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxLEVEL1a && MII_MODEL(ma->mii_id2) == MII_MODEL_xxLEVEL1a_LXT971) { sc->mii_funcs = &lxtphy971_funcs; } mpd = mii_phy_match(ma, lxtphys); printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); sc->mii_inst = mii->mii_instance; sc->mii_phy = ma->mii_phyno; sc->mii_pdata = mii; sc->mii_flags = ma->mii_flags; PHY_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 lxtphy_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); if (mii_phy_tick(sc) == 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 lxtphy_status(sc) struct mii_softc *sc; { struct mii_data *mii = sc->mii_pdata; struct ifmedia_entry *ife = mii->mii_media.ifm_cur; int bmcr, bmsr, csr; mii->mii_media_status = IFM_AVALID; mii->mii_media_active = IFM_ETHER; /* * Get link status from the CSR; we need to read the CSR * for media type anyhow, and the link status in the CSR * doens't latch, so fewer register reads are required. */ csr = PHY_READ(sc, MII_LXTPHY_CSR); if (csr & CSR_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) { bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); if ((bmsr & BMSR_ACOMP) == 0) { /* Erg, still trying, I guess... */ mii->mii_media_active |= IFM_NONE; return; } if (csr & CSR_SPEED) mii->mii_media_active |= IFM_100_TX; else mii->mii_media_active |= IFM_10_T; if (csr & CSR_DUPLEX) mii->mii_media_active |= IFM_FDX; else mii->mii_media_active |= IFM_HDX; } else mii->mii_media_active = ife->ifm_media; } void lxtphy_reset(sc) struct mii_softc *sc; { mii_phy_reset(sc); PHY_WRITE(sc, MII_LXTPHY_IER, PHY_READ(sc, MII_LXTPHY_IER) & ~IER_INTEN); }