/* $OpenBSD: nsgphy.c,v 1.21 2008/10/24 17:11:37 brad Exp $ */ /* * Copyright (c) 2001 Wind River Systems * Copyright (c) 2001 * 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. * */ /* * Driver for the National Semiconductor DP83891 and DP83861 * 10/100/1000 PHYs. * Datasheet available at: http://www.national.com/ds/DP/DP83861.pdf * * The DP83891 is the older NatSemi gigE PHY which isn't being sold * anymore. The DP83861 is its replacement, which is an 'enhanced' * firmware driven component. The major difference between the * two is that the 83891 can't generate interrupts, while the * 83861 can. (I think it wasn't originally designed to do this, but * it can now thanks to firmware updates.) The 83861 also allows * access to its internal RAM via indirect register access. * * The DP83865 is a low power version of the DP83861. */ #include #include #include #include #include #include #include #include #include #include #include int nsgphymatch(struct device*, void *, void *); void nsgphyattach(struct device *, struct device *, void *); struct cfattach nsgphy_ca = { sizeof(struct mii_softc), nsgphymatch, nsgphyattach, mii_phy_detach, mii_phy_activate }; struct cfdriver nsgphy_cd = { NULL, "nsgphy", DV_DULL }; int nsgphy_service(struct mii_softc *, struct mii_data *, int); void nsgphy_status(struct mii_softc *); const struct mii_phy_funcs nsgphy_funcs = { nsgphy_service, nsgphy_status, mii_phy_reset, }; static const struct mii_phydesc nsgphys[] = { { MII_OUI_NATSEMI, MII_MODEL_NATSEMI_DP83861, MII_STR_NATSEMI_DP83861 }, { MII_OUI_NATSEMI, MII_MODEL_NATSEMI_DP83865, MII_STR_NATSEMI_DP83865 }, { MII_OUI_NATSEMI, MII_MODEL_NATSEMI_DP83891, MII_STR_NATSEMI_DP83891 }, { 0, 0, NULL }, }; int nsgphymatch(struct device *parent, void *match, void *aux) { struct mii_attach_args *ma = aux; if (mii_phy_match(ma, nsgphys) != NULL) return (10); return (0); } void nsgphyattach(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; int anar; mpd = mii_phy_match(ma, nsgphys); 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 = &nsgphy_funcs; sc->mii_pdata = mii; sc->mii_flags = ma->mii_flags; sc->mii_anegticks = MII_ANEGTICKS; PHY_RESET(sc); sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; if (sc->mii_capabilities & BMSR_EXTSTAT) sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); /* * The PHY seems to have the 10baseT BMSR bits * hard-wired to 0, even though the device supports * 10baseT. What we do instead is read the post-reset * ANAR, who's 10baseT-related bits are set by strapping * pin 180, and fake the BMSR bits. */ anar = PHY_READ(sc, MII_ANAR); if (anar & ANAR_10) sc->mii_capabilities |= (BMSR_10THDX & ma->mii_capmask); if (anar & ANAR_10_FD) sc->mii_capabilities |= (BMSR_10TFDX & ma->mii_capmask); if ((sc->mii_capabilities & BMSR_MEDIAMASK) || (sc->mii_extcapabilities & EXTSR_MEDIAMASK)) mii_phy_add_media(sc); } int nsgphy_service(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 nsgphy_status(struct mii_softc *sc) { struct mii_data *mii = sc->mii_pdata; struct ifmedia_entry *ife = mii->mii_media.ifm_cur; int bmsr, bmcr, physup, gtsr; mii->mii_media_status = IFM_AVALID; mii->mii_media_active = IFM_ETHER; bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); physup = PHY_READ(sc, NSGPHY_MII_PHYSUP); if (physup & PHY_SUP_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) { if ((bmsr & BMSR_ACOMP) == 0) { /* Erg, still trying, I guess... */ mii->mii_media_active |= IFM_NONE; return; } switch (physup & (PHY_SUP_SPEED1|PHY_SUP_SPEED0)) { case PHY_SUP_SPEED1: mii->mii_media_active |= IFM_1000_T; gtsr = PHY_READ(sc, MII_100T2SR); if (gtsr & GTSR_MS_RES) mii->mii_media_active |= IFM_ETH_MASTER; break; case PHY_SUP_SPEED0: mii->mii_media_active |= IFM_100_TX; break; case 0: mii->mii_media_active |= IFM_10_T; break; default: mii->mii_media_active |= IFM_NONE; mii->mii_media_status = 0; return; } if (physup & PHY_SUP_DUPLEX) mii->mii_media_active |= mii_phy_flowstatus(sc) | IFM_FDX; else mii->mii_media_active |= IFM_HDX; } else mii->mii_media_active = ife->ifm_media; }