/* $OpenBSD: mii_physubr.c,v 1.3 1999/12/07 22:01:31 jason Exp $ */ /* $NetBSD: mii_physubr.c,v 1.2.6.1 1999/04/23 15:40:26 perry Exp $ */ /*- * Copyright (c) 1998, 1999 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. * * 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 the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * 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 common to all PHYs. */ #include #include #include #include #include #include #include #include #include #include /* * Media to register setting conversion table. Order matters. */ const struct mii_media mii_media_table[] = { { BMCR_ISO, ANAR_CSMA }, /* None */ { 0, ANAR_CSMA|ANAR_10 }, /* 10baseT */ { BMCR_FDX, ANAR_CSMA|ANAR_10_FD }, /* 10baseT-FDX */ { BMCR_S100, ANAR_CSMA|ANAR_T4 }, /* 100baseT4 */ { BMCR_S100, ANAR_CSMA|ANAR_TX }, /* 100baseTX */ { BMCR_S100|BMCR_FDX, ANAR_CSMA|ANAR_TX_FD }, /* 100baseTX-FDX */ }; void mii_phy_auto_timeout __P((void *)); void mii_phy_setmedia(sc) struct mii_softc *sc; { struct mii_data*mii = sc->mii_pdata; struct ifmedia_entry *ife = mii->mii_media.ifm_cur; int bmcr, anar; /* * Table index is stored in the media entry. */ #ifdef DIAGNOSTIC if (ife->ifm_data < 0 || ife->ifm_data >= MII_NMEDIA) panic("mii_phy_setmedia"); #endif anar = mii_media_table[ife->ifm_data].mm_anar; bmcr = mii_media_table[ife->ifm_data].mm_bmcr; if (ife->ifm_media & IFM_LOOP) bmcr |= BMCR_LOOP; PHY_WRITE(sc, MII_ANAR, anar); PHY_WRITE(sc, MII_BMCR, bmcr); } int mii_phy_auto(mii, waitfor) struct mii_softc *mii; { int bmsr, i; if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { PHY_WRITE(mii, MII_ANAR, BMSR_MEDIA_TO_ANAR(mii->mii_capabilities) | ANAR_CSMA); PHY_WRITE(mii, MII_BMCR, BMCR_AUTOEN | BMCR_STARTNEG); } if (waitfor) { /* Wait 500ms for it to complete. */ for (i = 0; i < 500; i++) { if ((bmsr = PHY_READ(mii, MII_BMSR)) & BMSR_ACOMP) return (0); delay(1000); #if 0 if ((bmsr & BMSR_ACOMP) == 0) printf("%s: autonegotiation failed to complete\n", mii->mii_dev.dv_xname); #endif } /* * Don't need to worry about clearing MIIF_DOINGAUTO. * If that's set, a timeout is pending, and it will * clear the flag. */ return (EIO); } /* * Just let it finish asynchronously. This is for the benefit of * the tick handler driving autonegotiation. Don't want 500ms * delays all the time while the system is running! */ if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { mii->mii_flags |= MIIF_DOINGAUTO; timeout(mii_phy_auto_timeout, mii, hz >> 1); } return (EJUSTRETURN); } void mii_phy_auto_timeout(arg) void *arg; { struct mii_softc *mii = arg; int s, bmsr; s = splnet(); mii->mii_flags &= ~MIIF_DOINGAUTO; bmsr = PHY_READ(mii, MII_BMSR); /* Update the media status. */ (void) (*mii->mii_service)(mii, mii->mii_pdata, MII_POLLSTAT); splx(s); } void mii_phy_reset(mii) struct mii_softc *mii; { int reg, i; if (mii->mii_flags & MIIF_NOISOLATE) reg = BMCR_RESET; else reg = BMCR_RESET | BMCR_ISO; PHY_WRITE(mii, MII_BMCR, reg); /* Wait 100ms for it to complete. */ for (i = 0; i < 100; i++) { reg = PHY_READ(mii, MII_BMCR); if ((reg & BMCR_RESET) == 0) break; delay(1000); } if (mii->mii_inst != 0 && ((mii->mii_flags & MIIF_NOISOLATE) == 0)) PHY_WRITE(mii, MII_BMCR, reg | BMCR_ISO); } void mii_phy_down(sc) struct mii_softc *sc; { if (sc->mii_flags & MIIF_DOINGAUTO) { sc->mii_flags &= ~MIIF_DOINGAUTO; untimeout(mii_phy_auto_timeout, sc); } } /* * Initialize generic PHY media based on BMSR, called when a PHY is * attached. We expect to be set up to print a comma-separated list * of media names. Does not print a newline. */ void mii_add_media(sc) struct mii_softc *sc; { struct mii_data *mii = sc->mii_pdata; #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) if ((sc->mii_flags & MIIF_NOISOLATE) == 0) ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), MII_MEDIA_NONE); if (sc->mii_capabilities & BMSR_10THDX) { ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, sc->mii_inst), MII_MEDIA_10_T); #if 0 if ((sc->mii_flags & MIIF_NOLOOP) == 0) ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_LOOP, sc->mii_inst), MII_MEDIA_10_T); #endif } if (sc->mii_capabilities & BMSR_10TFDX) ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_FDX, sc->mii_inst), MII_MEDIA_10_T_FDX); if (sc->mii_capabilities & BMSR_100TXHDX) { ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, 0, sc->mii_inst), MII_MEDIA_100_TX); #if 0 if ((sc->mii_flags & MIIF_NOLOOP) == 0) ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_T4, IFM_LOOP, sc->mii_inst), MII_MEDIA_100_T4); #endif } if (sc->mii_capabilities & BMSR_100TXFDX) ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_FDX, sc->mii_inst), MII_MEDIA_100_TX_FDX); if (sc->mii_capabilities & BMSR_100T4) { ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_T4, 0, sc->mii_inst), MII_MEDIA_100_T4); #if 0 if ((sc->mii_flags & MIIF_NOLOOP) == 0) ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_T4, IFM_LOOP, sc->mii_inst), MII_MEDIA_100_T4); #endif } if (sc->mii_capabilities & BMSR_ANEG) ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), MII_NMEDIA); /* intentionally invalid index */ #undef ADD }