566 lines
14 KiB
C
566 lines
14 KiB
C
/* $NetBSD: mii_physubr.c,v 1.33 2002/05/12 21:39:46 thorpej Exp $ */
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/*-
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* Copyright (c) 1998, 1999, 2000, 2001 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
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* NASA Ames Research Center.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Subroutines common to all PHYs.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: mii_physubr.c,v 1.33 2002/05/12 21:39:46 thorpej Exp $");
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#include <sys/param.h>
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#include <sys/device.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/socket.h>
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#include <sys/errno.h>
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#include <sys/proc.h>
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#include <net/if.h>
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#include <net/if_media.h>
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#include <net/route.h>
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#include <dev/mii/mii.h>
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#include <dev/mii/miivar.h>
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/*
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* Media to register setting conversion table. Order matters.
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*/
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const struct mii_media mii_media_table[MII_NMEDIA] = {
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/* None */
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{ BMCR_ISO, ANAR_CSMA,
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0, },
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/* 10baseT */
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{ BMCR_S10, ANAR_CSMA|ANAR_10,
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0, },
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/* 10baseT-FDX */
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{ BMCR_S10|BMCR_FDX, ANAR_CSMA|ANAR_10_FD,
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0, },
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/* 100baseT4 */
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{ BMCR_S100, ANAR_CSMA|ANAR_T4,
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0, },
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/* 100baseTX */
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{ BMCR_S100, ANAR_CSMA|ANAR_TX,
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0, },
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/* 100baseTX-FDX */
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{ BMCR_S100|BMCR_FDX, ANAR_CSMA|ANAR_TX_FD,
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0, },
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/* 1000baseX */
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{ BMCR_S1000, ANAR_CSMA,
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0, },
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/* 1000baseX-FDX */
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{ BMCR_S1000|BMCR_FDX, ANAR_CSMA,
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0, },
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/* 1000baseT */
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{ BMCR_S1000, ANAR_CSMA,
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GTCR_ADV_1000THDX },
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/* 1000baseT-FDX */
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{ BMCR_S1000, ANAR_CSMA,
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GTCR_ADV_1000TFDX },
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};
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void mii_phy_auto_timeout(void *);
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void
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mii_phy_setmedia(struct mii_softc *sc)
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{
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struct mii_data *mii = sc->mii_pdata;
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struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
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int bmcr, anar, gtcr;
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if (IFM_SUBTYPE(ife->ifm_media) == IFM_AUTO) {
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if ((PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) == 0)
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(void) mii_phy_auto(sc, 1);
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return;
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}
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/*
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* Table index is stored in the media entry.
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*/
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#ifdef DIAGNOSTIC
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if (ife->ifm_data < 0 || ife->ifm_data >= MII_NMEDIA)
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panic("mii_phy_setmedia");
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#endif
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anar = mii_media_table[ife->ifm_data].mm_anar;
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bmcr = mii_media_table[ife->ifm_data].mm_bmcr;
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gtcr = mii_media_table[ife->ifm_data].mm_gtcr;
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if (mii->mii_media.ifm_media & IFM_ETH_MASTER) {
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switch (IFM_SUBTYPE(ife->ifm_media)) {
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case IFM_1000_T:
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gtcr |= GTCR_MAN_MS|GTCR_ADV_MS;
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break;
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default:
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panic("mii_phy_setmedia: MASTER on wrong media");
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}
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}
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if (ife->ifm_media & IFM_LOOP)
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bmcr |= BMCR_LOOP;
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PHY_WRITE(sc, MII_ANAR, anar);
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PHY_WRITE(sc, MII_BMCR, bmcr);
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if (sc->mii_flags & MIIF_HAVE_GTCR)
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PHY_WRITE(sc, MII_100T2CR, gtcr);
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}
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int
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mii_phy_auto(struct mii_softc *sc, int waitfor)
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{
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int i;
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if ((sc->mii_flags & MIIF_DOINGAUTO) == 0) {
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/*
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* Check for 1000BASE-X. Autonegotiation is a bit
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* different on such devices.
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*/
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if (sc->mii_flags & MIIF_IS_1000X) {
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uint16_t anar = 0;
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if (sc->mii_extcapabilities & EXTSR_1000XFDX)
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anar |= ANAR_X_FD;
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if (sc->mii_extcapabilities & EXTSR_1000XHDX)
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anar |= ANAR_X_HD;
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if (sc->mii_flags & MIIF_DOPAUSE) {
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/* XXX Asymmetric vs. symmetric? */
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anar |= ANLPAR_X_PAUSE_TOWARDS;
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}
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PHY_WRITE(sc, MII_ANAR, anar);
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} else {
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uint16_t anar;
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anar = BMSR_MEDIA_TO_ANAR(sc->mii_capabilities) |
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ANAR_CSMA;
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if (sc->mii_flags & MIIF_DOPAUSE)
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anar |= ANAR_FC;
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PHY_WRITE(sc, MII_ANAR, anar);
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if (sc->mii_flags & MIIF_HAVE_GTCR) {
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uint16_t gtcr = 0;
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if (sc->mii_extcapabilities & EXTSR_1000TFDX)
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gtcr |= GTCR_ADV_1000TFDX;
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if (sc->mii_extcapabilities & EXTSR_1000THDX)
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gtcr |= GTCR_ADV_1000THDX;
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PHY_WRITE(sc, MII_100T2CR, gtcr);
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}
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}
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PHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN | BMCR_STARTNEG);
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}
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if (waitfor) {
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/* Wait 500ms for it to complete. */
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for (i = 0; i < 500; i++) {
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if (PHY_READ(sc, MII_BMSR) & BMSR_ACOMP)
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return (0);
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delay(1000);
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}
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/*
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* Don't need to worry about clearing MIIF_DOINGAUTO.
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* If that's set, a timeout is pending, and it will
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* clear the flag.
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*/
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return (EIO);
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}
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/*
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* Just let it finish asynchronously. This is for the benefit of
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* the tick handler driving autonegotiation. Don't want 500ms
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* delays all the time while the system is running!
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*/
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if (sc->mii_flags & MIIF_AUTOTSLEEP) {
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sc->mii_flags |= MIIF_DOINGAUTO;
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tsleep(&sc->mii_flags, PZERO, "miiaut", hz >> 1);
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mii_phy_auto_timeout(sc);
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} else if ((sc->mii_flags & MIIF_DOINGAUTO) == 0) {
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sc->mii_flags |= MIIF_DOINGAUTO;
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callout_reset(&sc->mii_nway_ch, hz >> 1,
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mii_phy_auto_timeout, sc);
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}
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return (EJUSTRETURN);
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}
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void
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mii_phy_auto_timeout(void *arg)
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{
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struct mii_softc *sc = arg;
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int s;
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if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
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return;
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s = splnet();
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sc->mii_flags &= ~MIIF_DOINGAUTO;
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/* Update the media status. */
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(void) PHY_SERVICE(sc, sc->mii_pdata, MII_POLLSTAT);
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splx(s);
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}
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int
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mii_phy_tick(struct mii_softc *sc)
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{
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struct mii_data *mii = sc->mii_pdata;
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struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
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int reg;
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/* Just bail now if the interface is down. */
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if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
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return (EJUSTRETURN);
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/*
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* If we're not doing autonegotiation, we don't need to do
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* any extra work here. However, we need to check the link
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* status so we can generate an announcement if the status
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* changes.
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*/
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if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
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return (0);
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/* Read the status register twice; BMSR_LINK is latch-low. */
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reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
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if (reg & BMSR_LINK) {
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/*
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* See above.
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*/
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return (0);
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}
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/*
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* Only retry autonegotiation every N seconds.
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*/
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KASSERT(sc->mii_anegticks != 0);
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if (++sc->mii_ticks != sc->mii_anegticks)
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return (EJUSTRETURN);
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sc->mii_ticks = 0;
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PHY_RESET(sc);
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if (mii_phy_auto(sc, 0) == EJUSTRETURN)
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return (EJUSTRETURN);
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/*
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* Might need to generate a status message if autonegotiation
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* failed.
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*/
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return (0);
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}
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void
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mii_phy_reset(struct mii_softc *sc)
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{
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int reg, i;
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if (sc->mii_flags & MIIF_NOISOLATE)
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reg = BMCR_RESET;
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else
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reg = BMCR_RESET | BMCR_ISO;
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PHY_WRITE(sc, MII_BMCR, reg);
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/* Wait 100ms for it to complete. */
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for (i = 0; i < 100; i++) {
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reg = PHY_READ(sc, MII_BMCR);
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if ((reg & BMCR_RESET) == 0)
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break;
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delay(1000);
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}
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if (sc->mii_inst != 0 && ((sc->mii_flags & MIIF_NOISOLATE) == 0))
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PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
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}
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void
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mii_phy_down(struct mii_softc *sc)
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{
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if (sc->mii_flags & MIIF_DOINGAUTO) {
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sc->mii_flags &= ~MIIF_DOINGAUTO;
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callout_stop(&sc->mii_nway_ch);
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}
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}
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void
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mii_phy_status(struct mii_softc *sc)
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{
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PHY_STATUS(sc);
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}
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void
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mii_phy_update(struct mii_softc *sc, int cmd)
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{
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struct mii_data *mii = sc->mii_pdata;
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int announce, s;
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if (sc->mii_media_active != mii->mii_media_active ||
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sc->mii_media_status != mii->mii_media_status ||
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cmd == MII_MEDIACHG) {
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announce = mii_phy_statusmsg(sc);
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(*mii->mii_statchg)(sc->mii_dev.dv_parent);
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sc->mii_media_active = mii->mii_media_active;
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sc->mii_media_status = mii->mii_media_status;
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if (announce) {
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s = splnet();
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rt_ifmsg(mii->mii_ifp);
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splx(s);
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}
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}
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}
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int
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mii_phy_statusmsg(struct mii_softc *sc)
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{
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struct mii_data *mii = sc->mii_pdata;
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struct ifnet *ifp = mii->mii_ifp;
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int baudrate, link_state, announce = 0;
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if (mii->mii_media_status & IFM_AVALID) {
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if (mii->mii_media_status & IFM_ACTIVE)
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link_state = LINK_STATE_UP;
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else
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link_state = LINK_STATE_DOWN;
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} else
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link_state = LINK_STATE_UNKNOWN;
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baudrate = ifmedia_baudrate(mii->mii_media_active);
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if (link_state != ifp->if_link_state) {
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ifp->if_link_state = link_state;
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/*
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* XXX Right here we'd like to notify protocols
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* XXX that the link status has changed, so that
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* XXX e.g. Duplicate Address Detection can restart.
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*/
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announce = 1;
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}
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if (baudrate != ifp->if_baudrate) {
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ifp->if_baudrate = baudrate;
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announce = 1;
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}
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return (announce);
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}
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/*
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* Initialize generic PHY media based on BMSR, called when a PHY is
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* attached. We expect to be set up to print a comma-separated list
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* of media names. Does not print a newline.
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*/
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void
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mii_phy_add_media(struct mii_softc *sc)
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{
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struct mii_data *mii = sc->mii_pdata;
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const char *sep = "";
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#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
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#define PRINT(n) printf("%s%s", sep, (n)); sep = ", "
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if ((sc->mii_flags & MIIF_NOISOLATE) == 0)
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ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
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MII_MEDIA_NONE);
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/*
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* There are different interpretations for the bits in
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* HomePNA PHYs. And there is really only one media type
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* that is supported.
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*/
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if (sc->mii_flags & MIIF_IS_HPNA) {
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if (sc->mii_capabilities & BMSR_10THDX) {
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ADD(IFM_MAKEWORD(IFM_ETHER, IFM_HPNA_1, 0,
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sc->mii_inst),
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MII_MEDIA_10_T);
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PRINT("HomePNA1");
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}
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return;
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}
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if (sc->mii_capabilities & BMSR_10THDX) {
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ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, sc->mii_inst),
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MII_MEDIA_10_T);
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PRINT("10baseT");
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}
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if (sc->mii_capabilities & BMSR_10TFDX) {
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ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_FDX, sc->mii_inst),
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MII_MEDIA_10_T_FDX);
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PRINT("10baseT-FDX");
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}
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if (sc->mii_capabilities & BMSR_100TXHDX) {
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ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, 0, sc->mii_inst),
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MII_MEDIA_100_TX);
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PRINT("100baseTX");
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}
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if (sc->mii_capabilities & BMSR_100TXFDX) {
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ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_FDX, sc->mii_inst),
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MII_MEDIA_100_TX_FDX);
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PRINT("100baseTX-FDX");
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}
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if (sc->mii_capabilities & BMSR_100T4) {
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ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_T4, 0, sc->mii_inst),
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MII_MEDIA_100_T4);
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PRINT("100baseT4");
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}
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if (sc->mii_extcapabilities & EXTSR_MEDIAMASK) {
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/*
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* XXX Right now only handle 1000SX and 1000TX. Need
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* XXX to handle 1000LX and 1000CX some how.
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*
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* Note since it can take 5 seconds to auto-negotiate
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* a gigabit link, we make anegticks 10 seconds for
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* all the gigabit media types.
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*/
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if (sc->mii_extcapabilities & EXTSR_1000XHDX) {
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sc->mii_anegticks = 10;
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sc->mii_flags |= MIIF_IS_1000X;
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ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0,
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sc->mii_inst), MII_MEDIA_1000_X);
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PRINT("1000baseSX");
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}
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if (sc->mii_extcapabilities & EXTSR_1000XFDX) {
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sc->mii_anegticks = 10;
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sc->mii_flags |= MIIF_IS_1000X;
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ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX,
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sc->mii_inst), MII_MEDIA_1000_X_FDX);
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PRINT("1000baseSX-FDX");
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}
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/*
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* 1000baseT media needs to be able to manipulate
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* master/slave mode. We set IFM_ETH_MASTER in
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* the "don't care mask" and filter it out when
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* the media is set.
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*
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* All 1000baseT PHYs have a 1000baseT control register.
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*/
|
|
if (sc->mii_extcapabilities & EXTSR_1000THDX) {
|
|
sc->mii_anegticks = 10;
|
|
sc->mii_flags |= MIIF_HAVE_GTCR;
|
|
mii->mii_media.ifm_mask |= IFM_ETH_MASTER;
|
|
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, 0,
|
|
sc->mii_inst), MII_MEDIA_1000_T);
|
|
PRINT("1000baseT");
|
|
}
|
|
if (sc->mii_extcapabilities & EXTSR_1000TFDX) {
|
|
sc->mii_anegticks = 10;
|
|
sc->mii_flags |= MIIF_HAVE_GTCR;
|
|
mii->mii_media.ifm_mask |= IFM_ETH_MASTER;
|
|
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, IFM_FDX,
|
|
sc->mii_inst), MII_MEDIA_1000_T_FDX);
|
|
PRINT("1000baseT-FDX");
|
|
}
|
|
}
|
|
|
|
if (sc->mii_capabilities & BMSR_ANEG) {
|
|
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst),
|
|
MII_NMEDIA); /* intentionally invalid index */
|
|
PRINT("auto");
|
|
}
|
|
#undef ADD
|
|
#undef PRINT
|
|
}
|
|
|
|
void
|
|
mii_phy_delete_media(struct mii_softc *sc)
|
|
{
|
|
struct mii_data *mii = sc->mii_pdata;
|
|
|
|
ifmedia_delete_instance(&mii->mii_media, sc->mii_inst);
|
|
}
|
|
|
|
int
|
|
mii_phy_activate(struct device *self, enum devact act)
|
|
{
|
|
int rv = 0;
|
|
|
|
switch (act) {
|
|
case DVACT_ACTIVATE:
|
|
rv = EOPNOTSUPP;
|
|
break;
|
|
|
|
case DVACT_DEACTIVATE:
|
|
/* Nothing special to do. */
|
|
break;
|
|
}
|
|
|
|
return (rv);
|
|
}
|
|
|
|
/* ARGSUSED1 */
|
|
int
|
|
mii_phy_detach(struct device *self, int flags)
|
|
{
|
|
struct mii_softc *sc = (void *) self;
|
|
|
|
if (sc->mii_flags & MIIF_DOINGAUTO)
|
|
callout_stop(&sc->mii_nway_ch);
|
|
|
|
mii_phy_delete_media(sc);
|
|
|
|
return (0);
|
|
}
|
|
|
|
const struct mii_phydesc *
|
|
mii_phy_match(const struct mii_attach_args *ma, const struct mii_phydesc *mpd)
|
|
{
|
|
|
|
for (; mpd->mpd_name != NULL; mpd++) {
|
|
if (MII_OUI(ma->mii_id1, ma->mii_id2) == mpd->mpd_oui &&
|
|
MII_MODEL(ma->mii_id2) == mpd->mpd_model)
|
|
return (mpd);
|
|
}
|
|
return (NULL);
|
|
}
|