/*- * Copyright (c) 2001-2003, Shunsuke Akiyama . * 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 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 AUTHOR 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. * * $FreeBSD: src/sys/dev/mii/ruephy.c,v 1.1.4.1 2003/07/30 13:57:35 akiyama Exp $ * $DragonFly: src/sys/dev/netif/mii_layer/ruephy.c,v 1.6 2006/12/22 23:26:20 swildner Exp $ */ /* * driver for RealTek RTL8150 internal PHY */ #include #include #include #include #include #include #include #include #include #include #include #include "miibus_if.h" static int ruephy_probe(device_t); static int ruephy_attach(device_t); static device_method_t ruephy_methods[] = { /* device interface */ DEVMETHOD(device_probe, ruephy_probe), DEVMETHOD(device_attach, ruephy_attach), DEVMETHOD(device_detach, ukphy_detach), DEVMETHOD(device_shutdown, bus_generic_shutdown), { 0, 0 } }; static devclass_t ruephy_devclass; static driver_t ruephy_driver = { "ruephy", ruephy_methods, sizeof(struct mii_softc) }; DRIVER_MODULE(ruephy, miibus, ruephy_driver, ruephy_devclass, 0, 0); static int ruephy_service(struct mii_softc *, struct mii_data *, int); static void ruephy_reset(struct mii_softc *); static void ruephy_status(struct mii_softc *); static int ruephy_probe(device_t dev) { struct mii_attach_args *ma; device_t parent; ma = device_get_ivars(dev); parent = device_get_parent(device_get_parent(dev)); /* * RealTek RTL8150 PHY doesn't have vendor/device ID registers: * the rue driver fakes up a return value of all zeros. */ if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 || MII_MODEL(ma->mii_id2) != 0) return (ENXIO); /* * Make sure the parent is an 'rue'. */ if (strcmp(device_get_name(parent), "rue") != 0) return (ENXIO); device_set_desc(dev, "RealTek RTL8150 internal media interface"); return (0); } static int ruephy_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); /* * The RealTek PHY can never be isolated, so never allow non-zero * instances! */ if (mii->mii_instance != 0) { device_printf(dev, "ignoring this PHY, non-zero instance\n"); return (ENXIO); } LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); sc->mii_inst = mii->mii_instance; sc->mii_service = ruephy_service; sc->mii_reset = ruephy_reset; sc->mii_pdata = mii; mii->mii_instance++; sc->mii_flags |= MIIF_NOISOLATE; ruephy_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"); MIIBUS_MEDIAINIT(sc->mii_dev); return (0); } static int ruephy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) { struct ifmedia_entry *ife = mii->mii_media.ifm_cur; int reg; /* * We can't isolate the RealTek RTL8150 PHY, * so it has to be the only one! */ KASSERT(IFM_INST(ife->ifm_media) == sc->mii_inst, ("ruephy_service: can't isolate RealTek RTL8150 PHY")); switch (cmd) { case MII_POLLSTAT: break; case MII_MEDIACHG: /* * If the interface is not up, don't do anything. */ if ((mii->mii_ifp->if_flags & IFF_UP) == 0) break; if (IFM_SUBTYPE(ife->ifm_media) == IFM_100_T4) { /* * XXX Not supported as a manual setting right now. */ return (EINVAL); } mii_phy_set_media(sc); break; case MII_TICK: /* * Is the interface even up? */ if ((mii->mii_ifp->if_flags & IFF_UP) == 0) return (0); /* * Only used for autonegotiation. */ if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) break; /* * Check to see if we have link. If we do, we don't * need to restart the autonegotiation process. Read * the MSR twice in case it's latched. */ reg = PHY_READ(sc, RUEPHY_MII_MSR) | PHY_READ(sc, RUEPHY_MII_MSR); if (reg & RUEPHY_MSR_LINK) break; /* * Only retry autonegotiation every 5 seconds. */ if (++sc->mii_ticks != 5) return (0); sc->mii_ticks = 0; ruephy_reset(sc); if (mii_phy_auto(sc, 0) == EJUSTRETURN) return (0); break; } /* Update the media status. */ ruephy_status(sc); /* Callback if something changed. */ mii_phy_update(sc, cmd); return (0); } static void ruephy_reset(struct mii_softc *sc) { mii_phy_reset(sc); /* * XXX RealTek RTL8150 PHY doesn't set the BMCR properly after * XXX reset, which breaks autonegotiation. */ PHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN); } static void ruephy_status(struct mii_softc *sc) { struct mii_data *mii = sc->mii_pdata; int bmsr, bmcr, msr; mii->mii_media_status = IFM_AVALID; mii->mii_media_active = IFM_ETHER; msr = PHY_READ(sc, RUEPHY_MII_MSR) | PHY_READ(sc, RUEPHY_MII_MSR); if (msr & RUEPHY_MSR_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; } bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); if (bmcr & BMCR_AUTOEN) { if ((bmsr & BMSR_ACOMP) == 0) { /* Erg, still trying, I guess... */ mii->mii_media_active |= IFM_NONE; return; } if (msr & RUEPHY_MSR_SPEED100) mii->mii_media_active |= IFM_100_TX; else mii->mii_media_active |= IFM_10_T; if (msr & RUEPHY_MSR_DUPLEX) mii->mii_media_active |= IFM_FDX; } else { mii->mii_media_active = mii->mii_media.ifm_cur->ifm_media; } }