/*- * SPDX-License-Identifier: BSD-4-Clause * * 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. */ #include /* * driver for RealTek 8139 internal PHYs */ #include #include #include #include #include #include #include /* XXXGL: if_rlreg.h contamination */ #include #include #include #include #include #include "miidevs.h" #include #include #include "miibus_if.h" static int rlphy_probe(device_t); static int rlphy_attach(device_t); static device_method_t rlphy_methods[] = { /* device interface */ DEVMETHOD(device_probe, rlphy_probe), DEVMETHOD(device_attach, rlphy_attach), DEVMETHOD(device_detach, mii_phy_detach), DEVMETHOD(device_shutdown, bus_generic_shutdown), DEVMETHOD_END }; static devclass_t rlphy_devclass; static driver_t rlphy_driver = { "rlphy", rlphy_methods, sizeof(struct mii_softc) }; DRIVER_MODULE(rlphy, miibus, rlphy_driver, rlphy_devclass, 0, 0); static int rlphy_service(struct mii_softc *, struct mii_data *, int); static void rlphy_status(struct mii_softc *); /* * RealTek internal PHYs don't have vendor/device ID registers; * re(4) and rl(4) fake up a return value of all zeros. */ static const struct mii_phydesc rlintphys[] = { { 0, 0, "RealTek internal media interface" }, MII_PHY_END }; static const struct mii_phydesc rlphys[] = { MII_PHY_DESC(yyREALTEK, RTL8201L), MII_PHY_DESC(REALTEK, RTL8201E), MII_PHY_DESC(xxICPLUS, IP101), MII_PHY_END }; static const struct mii_phy_funcs rlphy_funcs = { rlphy_service, rlphy_status, mii_phy_reset }; static int rlphy_probe(device_t dev) { int rv; rv = mii_phy_dev_probe(dev, rlphys, BUS_PROBE_DEFAULT); if (rv <= 0) return (rv); if (mii_dev_mac_match(dev, "rl") || mii_dev_mac_match(dev, "re")) return (mii_phy_dev_probe(dev, rlintphys, BUS_PROBE_DEFAULT)); return (ENXIO); } static int rlphy_attach(device_t dev) { /* * The RealTek PHY can never be isolated. */ mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE, &rlphy_funcs, 1); return (0); } static int rlphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) { switch (cmd) { case MII_POLLSTAT: break; case MII_MEDIACHG: mii_phy_setmedia(sc); break; case MII_TICK: /* * The RealTek PHY's autonegotiation doesn't need to be * kicked; it continues in the background. */ break; } /* Update the media status. */ PHY_STATUS(sc); /* Callback if something changed. */ mii_phy_update(sc, cmd); return (0); } static void rlphy_status(struct mii_softc *phy) { struct mii_data *mii = phy->mii_pdata; struct ifmedia_entry *ife = mii->mii_media.ifm_cur; int bmsr, bmcr, anlpar; mii->mii_media_status = IFM_AVALID; mii->mii_media_active = IFM_ETHER; bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR); if (bmsr & BMSR_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; } if (bmcr & BMCR_LOOP) mii->mii_media_active |= IFM_LOOP; if (bmcr & BMCR_AUTOEN) { /* * NWay autonegotiation takes the highest-order common * bit of the ANAR and ANLPAR (i.e. best media advertised * both by us and our link partner). */ if ((bmsr & BMSR_ACOMP) == 0) { /* Erg, still trying, I guess... */ mii->mii_media_active |= IFM_NONE; return; } if ((anlpar = PHY_READ(phy, MII_ANAR) & PHY_READ(phy, 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; if ((mii->mii_media_active & IFM_FDX) != 0) mii->mii_media_active |= mii_phy_flowstatus(phy); return; } /* * If the other side doesn't support NWAY, then the * best we can do is determine if we have a 10Mbps or * 100Mbps link. There's no way to know if the link * is full or half duplex, so we default to half duplex * and hope that the user is clever enough to manually * change the media settings if we're wrong. */ /* * The RealTek PHY supports non-NWAY link speed * detection, however it does not report the link * detection results via the ANLPAR or BMSR registers. * (What? RealTek doesn't do things the way everyone * else does? I'm just shocked, shocked I tell you.) * To determine the link speed, we have to do one * of two things: * * - If this is a standalone RealTek RTL8201(L) or * workalike PHY, we can determine the link speed by * testing bit 0 in the magic, vendor-specific register * at offset 0x19. * * - If this is a RealTek MAC with integrated PHY, we * can test the 'SPEED10' bit of the MAC's media status * register. */ if (!(phy->mii_mpd_model == 0 && phy->mii_mpd_rev == 0)) { if (PHY_READ(phy, 0x0019) & 0x01) mii->mii_media_active |= IFM_100_TX; else mii->mii_media_active |= IFM_10_T; } else { if (PHY_READ(phy, RL_MEDIASTAT) & RL_MEDIASTAT_SPEED10) mii->mii_media_active |= IFM_10_T; else mii->mii_media_active |= IFM_100_TX; } mii->mii_media_active |= IFM_HDX; } else mii->mii_media_active = ife->ifm_media; }