/* $OpenBSD: amphy.c,v 1.19 2013/12/28 03:30:40 deraadt Exp $ */ /* * Copyright (c) 1997, 1998, 1999 * Bill Paul . 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 Bill Paul. * 4. Neither the name of the author nor the names of any co-contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY Bill Paul 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 Bill Paul OR THE VOICES IN HIS HEAD * 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. * * $FreeBSD: src/sys/dev/mii/amphy.c,v 1.3 2000/04/19 14:57:29 phk Exp $ */ /* * driver for AMD AM79c873 PHYs * This driver also works for the Davicom DM9101 PHY, which appears to * be an AM79c873 workalike. */ #include #include #include #include #include #include #include #include #include #include #include int amphymatch(struct device *, void *, void *); void amphyattach(struct device *, struct device *, void *); struct cfattach amphy_ca = { sizeof(struct mii_softc), amphymatch, amphyattach, mii_phy_detach }; struct cfdriver amphy_cd = { NULL, "amphy", DV_DULL }; int amphy_service(struct mii_softc *, struct mii_data *, int); void amphy_status(struct mii_softc *); const struct mii_phy_funcs amphy_funcs = { amphy_service, amphy_status, mii_phy_reset, }; static const struct mii_phydesc amphys[] = { { MII_OUI_xxAMD, MII_MODEL_xxAMD_79C873, MII_STR_xxAMD_79C873 }, { MII_OUI_xxDAVICOM, MII_MODEL_xxDAVICOM_DM9101, MII_STR_xxDAVICOM_DM9101 }, { MII_OUI_DAVICOM, MII_MODEL_DAVICOM_DM9102, MII_STR_DAVICOM_DM9102 }, { MII_OUI_DAVICOM, MII_MODEL_DAVICOM_DM9601, MII_STR_DAVICOM_DM9601 }, { MII_OUI_xxALTIMA, MII_MODEL_AMD_79C875phy, MII_STR_AMD_79C875phy }, { 0, 0, NULL }, }; int amphymatch(struct device *parent, void *match, void *aux) { struct mii_attach_args *ma = aux; if (mii_phy_match(ma, amphys) != NULL) return (10); return (0); } void amphyattach(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; const struct mii_phydesc *mpd; mpd = mii_phy_match(ma, amphys); 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_funcs = &hy_funcs; sc->mii_pdata = mii; sc->mii_flags = ma->mii_flags; sc->mii_flags |= MIIF_NOISOLATE; 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 amphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) { struct ifmedia_entry *ife = mii->mii_media.ifm_cur; int reg; 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 amphy_status(struct mii_softc *sc) { struct mii_data *mii = sc->mii_pdata; struct ifmedia_entry *ife = mii->mii_media.ifm_cur; int bmsr, bmcr, par, anlpar; 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 PAR status bits 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; } if (PHY_READ(sc, MII_ANER) & ANER_LPAN) { anlpar = PHY_READ(sc, MII_ANAR) & PHY_READ(sc, MII_ANLPAR); if (anlpar & ANLPAR_TX_FD) mii->mii_media_active |= IFM_100_TX|IFM_FDX; else if (anlpar & ANLPAR_T4) mii->mii_media_active |= IFM_100_T4|IFM_HDX; else if (anlpar & ANLPAR_TX) mii->mii_media_active |= IFM_100_TX|IFM_HDX; else if (anlpar & ANLPAR_10_FD) mii->mii_media_active |= IFM_10_T|IFM_FDX; else if (anlpar & ANLPAR_10) mii->mii_media_active |= IFM_10_T|IFM_HDX; else mii->mii_media_active |= IFM_NONE; return; } /* * Link partner is not capable of autonegotiation. */ par = PHY_READ(sc, MII_AMPHY_DSCSR); if (par & DSCSR_100FDX) mii->mii_media_active |= IFM_100_TX|IFM_FDX; else if (par & DSCSR_100HDX) mii->mii_media_active |= IFM_100_TX|IFM_HDX; else if (par & DSCSR_10FDX) mii->mii_media_active |= IFM_10_T|IFM_FDX; else if (par & DSCSR_10HDX) mii->mii_media_active |= IFM_10_T|IFM_HDX; } else mii->mii_media_active = ife->ifm_media; }