545 lines
13 KiB
C
545 lines
13 KiB
C
/* $NetBSD: mii_physubr.c,v 1.5 1999/08/03 19:41:49 drochner 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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__FBSDID("$FreeBSD$");
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#include <sys/param.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/module.h>
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#include <sys/bus.h>
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#include <net/if.h>
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#include <net/if_media.h>
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#include <dev/mii/mii.h>
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#include <dev/mii/miivar.h>
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#include "miibus_if.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
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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);
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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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KASSERT(ife->ifm_data >=0 && ife->ifm_data < MII_NMEDIA,
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("invalid ife->ifm_data (0x%x) in mii_phy_setmedia",
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ife->ifm_data));
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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)
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{
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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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return (EJUSTRETURN);
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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 ifmedia_entry *ife = sc->mii_pdata->mii_media.ifm_cur;
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struct ifnet *ifp = sc->mii_pdata->mii_ifp;
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int reg;
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/* Just bail now if the interface is down. */
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if ((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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if (sc->mii_anegticks == 0)
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sc->mii_anegticks = 17;
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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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mii_phy_reset(sc);
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mii_phy_auto(sc);
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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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}
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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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if (sc->mii_media_active != mii->mii_media_active ||
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cmd == MII_MEDIACHG) {
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MIIBUS_STATCHG(sc->mii_dev);
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sc->mii_media_active = mii->mii_media_active;
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}
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if (sc->mii_media_status != mii->mii_media_status) {
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MIIBUS_LINKCHG(sc->mii_dev);
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sc->mii_media_status = mii->mii_media_status;
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}
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}
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/*
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* Given an ifmedia word, return the corresponding ANAR value.
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*/
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int
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mii_anar(media)
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int media;
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{
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int rv;
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switch (media & (IFM_TMASK|IFM_NMASK|IFM_FDX)) {
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case IFM_ETHER|IFM_10_T:
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rv = ANAR_10|ANAR_CSMA;
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break;
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case IFM_ETHER|IFM_10_T|IFM_FDX:
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rv = ANAR_10_FD|ANAR_CSMA;
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break;
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case IFM_ETHER|IFM_100_TX:
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rv = ANAR_TX|ANAR_CSMA;
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break;
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case IFM_ETHER|IFM_100_TX|IFM_FDX:
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rv = ANAR_TX_FD|ANAR_CSMA;
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break;
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case IFM_ETHER|IFM_100_T4:
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rv = ANAR_T4|ANAR_CSMA;
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break;
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default:
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rv = 0;
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break;
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}
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return (rv);
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}
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/*
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* Given a BMCR value, return the corresponding ifmedia word.
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*/
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int
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mii_media_from_bmcr(bmcr)
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int bmcr;
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{
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int rv = IFM_ETHER;
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if (bmcr & BMCR_S100)
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rv |= IFM_100_TX;
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else
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rv |= IFM_10_T;
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if (bmcr & BMCR_FDX)
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rv |= IFM_FDX;
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return (rv);
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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_add_media(struct mii_softc *sc)
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{
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const char *sep = "";
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struct mii_data *mii;
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mii = device_get_softc(sc->mii_dev);
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if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) {
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printf("no media present");
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return;
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}
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#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
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#define PRINT(s) printf("%s%s", sep, s); sep = ", "
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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), 0);
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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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BMCR_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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BMCR_S100);
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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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BMCR_S100|BMCR_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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/*
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* XXX How do you enable 100baseT4? I assume we set
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* XXX BMCR_S100 and then assume the PHYs will take
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* XXX watever action is necessary to switch themselves
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* XXX into T4 mode.
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*/
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ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_T4, 0, sc->mii_inst),
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BMCR_S100);
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PRINT("100baseT4");
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}
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if (sc->mii_capabilities & BMSR_ANEG) {
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ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst),
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BMCR_AUTOEN);
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PRINT("auto");
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}
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#undef ADD
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#undef PRINT
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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(s) printf("%s%s", sep, s); 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 = 17;
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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 = 17;
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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
|
|
* master/slave mode. We set IFM_ETH_MASTER in
|
|
* the "don't care mask" and filter it out when
|
|
* the media is set.
|
|
*
|
|
* All 1000baseT PHYs have a 1000baseT control register.
|
|
*/
|
|
if (sc->mii_extcapabilities & EXTSR_1000THDX) {
|
|
sc->mii_anegticks = 17;
|
|
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 = 17;
|
|
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
|
|
}
|
|
|
|
int
|
|
mii_phy_detach(device_t dev)
|
|
{
|
|
struct mii_softc *sc;
|
|
struct mii_data *mii;
|
|
|
|
sc = device_get_softc(dev);
|
|
mii = device_get_softc(device_get_parent(dev));
|
|
mii_phy_down(sc);
|
|
sc->mii_dev = NULL;
|
|
LIST_REMOVE(sc, mii_list);
|
|
|
|
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);
|
|
}
|