/* $OpenBSD: amphy.c,v 1.13 2005/05/27 08:04:15 brad 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 1.2.2.2 2002/11/08 21:53:49 semenu 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 "mii.h" #include "miivar.h" #include "miidevs.h" #include "amphyreg.h" #include "miibus_if.h" static int amphy_probe (device_t); static int amphy_attach (device_t); static device_method_t amphy_methods[] = { /* device interface */ DEVMETHOD(device_probe, amphy_probe), DEVMETHOD(device_attach, amphy_attach), DEVMETHOD(device_detach, ukphy_detach), DEVMETHOD(device_shutdown, bus_generic_shutdown), DEVMETHOD_END }; static const struct mii_phydesc amphys[] = { MII_PHYDESC(xxAMD, 79C873), MII_PHYDESC(xxDAVICOM, DM9101), MII_PHYDESC(DAVICOM, DM9102), MII_PHYDESC(DAVICOM, DM9601), MII_PHYDESC_NULL }; static devclass_t amphy_devclass; static driver_t amphy_driver = { "amphy", amphy_methods, sizeof(struct mii_softc) }; DRIVER_MODULE(amphy, miibus, amphy_driver, amphy_devclass, NULL, NULL); static int amphy_service(struct mii_softc *, struct mii_data *, int); static void amphy_status(struct mii_softc *); static int amphy_probe(device_t dev) { struct mii_attach_args *ma = device_get_ivars(dev); const struct mii_phydesc *mpd; mpd = mii_phy_match(ma, amphys); if (mpd != NULL) { device_set_desc(dev, mpd->mpd_name); return (0); } return (ENXIO); } static int amphy_attach(device_t dev) { struct mii_softc *sc; struct mii_attach_args *ma; struct mii_data *mii; sc = device_get_softc(dev); ma = device_get_ivars(dev); mii_softc_init(sc, ma); sc->mii_dev = device_get_parent(dev); mii = device_get_softc(sc->mii_dev); LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); sc->mii_inst = mii->mii_instance; sc->mii_service = amphy_service; sc->mii_pdata = mii; sc->mii_flags |= MIIF_NOISOLATE; mii->mii_instance++; #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), MII_MEDIA_NONE); #if 0 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), MII_MEDIA_100_TX); #endif mii_phy_reset(sc); sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; device_printf(dev, " "); if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) kprintf("no media present"); else mii_phy_add_media(sc); kprintf("\n"); #undef ADD MIIBUS_MEDIAINIT(sc->mii_dev); return(0); } static 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_set_media(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; } /* Update the media status. */ amphy_status(sc); /* Callback if something changed. */ mii_phy_update(sc, cmd); return (0); } static void amphy_status(struct mii_softc *sc) { struct mii_data *mii = sc->mii_pdata; 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 of 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_T4) mii->mii_media_active |= IFM_100_T4; else if (anlpar & ANLPAR_TX_FD) mii->mii_media_active |= IFM_100_TX|IFM_FDX; else if (anlpar & ANLPAR_TX) mii->mii_media_active |= IFM_100_TX; 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; 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; else if (par & DSCSR_10FDX) mii->mii_media_active |= IFM_10_T|IFM_HDX; else if (par & DSCSR_10HDX) mii->mii_media_active |= IFM_10_T; } else { mii->mii_media_active = mii->mii_media.ifm_cur->ifm_media; } }