/* $NetBSD: ukphy_subr.c,v 1.15.4.1 2019/11/06 09:53:59 martin Exp $ */ /*- * Copyright (c) 1998 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, * NASA Ames Research Center, and by Frank van der Linden. * * 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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. */ /* * Subroutines shared by the ukphy driver and other PHY drivers. */ #include __KERNEL_RCSID(0, "$NetBSD: ukphy_subr.c,v 1.15.4.1 2019/11/06 09:53:59 martin Exp $"); #include #include #include #include #include #include #include #include #include /* * Media status subroutine. If a PHY driver does media detection simply * by decoding the NWay autonegotiation, use this routine. */ void ukphy_status(struct mii_softc *phy) { struct mii_data *mii = phy->mii_pdata; struct ifmedia_entry *ife = mii->mii_media.ifm_cur; uint16_t bmsr, bmcr, anar, anlpar, gtcr, gtsr, result; mii->mii_media_status = IFM_AVALID; mii->mii_media_active = IFM_ETHER; PHY_READ(phy, MII_BMSR, &bmsr); PHY_READ(phy, MII_BMSR, &bmsr); if (bmsr & BMSR_LINK) mii->mii_media_status |= IFM_ACTIVE; PHY_READ(phy, MII_BMCR, &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; } PHY_READ(phy, MII_ANAR, &anar); PHY_READ(phy, MII_ANLPAR, &anlpar); result = anar & anlpar; if ((phy->mii_flags & MIIF_HAVE_GTCR) != 0 && (phy->mii_extcapabilities & (EXTSR_1000THDX | EXTSR_1000TFDX)) != 0) { PHY_READ(phy, MII_100T2CR, >cr); PHY_READ(phy, MII_100T2SR, >sr); } else gtcr = gtsr = 0; if ((gtcr & GTCR_ADV_1000TFDX) && (gtsr & GTSR_LP_1000TFDX)) mii->mii_media_active |= IFM_1000_T | IFM_FDX; else if ((gtcr & GTCR_ADV_1000THDX) && (gtsr & GTSR_LP_1000THDX)) mii->mii_media_active |= IFM_1000_T | IFM_HDX; else if (result & ANLPAR_TX_FD) mii->mii_media_active |= IFM_100_TX | IFM_FDX; else if (result & ANLPAR_T4) mii->mii_media_active |= IFM_100_T4 | IFM_HDX; else if (result & ANLPAR_TX) mii->mii_media_active |= IFM_100_TX | IFM_HDX; else if (result & ANLPAR_10_FD) mii->mii_media_active |= IFM_10_T | IFM_FDX; else if (result & ANLPAR_10) mii->mii_media_active |= IFM_10_T | IFM_HDX; else mii->mii_media_active |= IFM_NONE; if ((IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T) && (gtsr & GTSR_MS_RES)) mii->mii_media_active |= IFM_ETH_MASTER; if (mii->mii_media_active & IFM_FDX) mii->mii_media_active |= mii_phy_flowstatus(phy); } else mii->mii_media_active = ife->ifm_media; }