/*- * SPDX-License-Identifier: BSD-2-Clause * * 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. * */ #include /* * driver for RealTek RTL8150 internal PHY */ #include #include #include #include #include #include #include #include #include #include #include #include #include "miidevs.h" #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, mii_phy_detach), DEVMETHOD(device_shutdown, bus_generic_shutdown), DEVMETHOD_END }; static devclass_t ruephy_devclass; static driver_t ruephy_driver = { .name = "ruephy", .methods = ruephy_methods, .size = 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 *); /* * The RealTek RTL8150 internal PHY doesn't have vendor/device ID * registers; rue(4) fakes up a return value of all zeros. */ static const struct mii_phydesc ruephys[] = { { 0, 0, "RealTek RTL8150 internal media interface" }, MII_PHY_END }; static const struct mii_phy_funcs ruephy_funcs = { ruephy_service, ruephy_status, ruephy_reset }; static int ruephy_probe(device_t dev) { if (strcmp(device_get_name(device_get_parent(device_get_parent(dev))), "rue") == 0) return (mii_phy_dev_probe(dev, ruephys, BUS_PROBE_DEFAULT)); return (ENXIO); } static int ruephy_attach(device_t dev) { mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE, &ruephy_funcs, 1); 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; switch (cmd) { case MII_POLLSTAT: break; case MII_MEDIACHG: mii_phy_setmedia(sc); break; case MII_TICK: /* * 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 mii_anegticks seconds. */ if (sc->mii_ticks <= sc->mii_anegticks) break; sc->mii_ticks = 0; PHY_RESET(sc); if (mii_phy_auto(sc) == EJUSTRETURN) return (0); break; } /* Update the media status. */ PHY_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_S100 | BMCR_AUTOEN | BMCR_FDX)); } static void ruephy_status(struct mii_softc *phy) { struct mii_data *mii = phy->mii_pdata; struct ifmedia_entry *ife = mii->mii_media.ifm_cur; int bmsr, bmcr, msr; mii->mii_media_status = IFM_AVALID; mii->mii_media_active = IFM_ETHER; msr = PHY_READ(phy, RUEPHY_MII_MSR) | PHY_READ(phy, RUEPHY_MII_MSR); if (msr & RUEPHY_MSR_LINK) mii->mii_media_status |= IFM_ACTIVE; bmcr = PHY_READ(phy, MII_BMCR); if (bmcr & BMCR_ISO) { mii->mii_media_active |= IFM_NONE; mii->mii_media_status = 0; return; } bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, 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 | mii_phy_flowstatus(phy); else mii->mii_media_active |= IFM_HDX; } else mii->mii_media_active = ife->ifm_media; }