61a3ac6e27
interface. Make MII drivers forget about 'struct ifnet'. Later plan is to provide an administrative downcall from ifnet layer into drivers, to inform them about administrative status change. If someone thinks that processing MII events for an administratively down interface is a big problem, then drivers would turn MII processing off. The following MII drivers do evil things, like strcmp() on driver name, so they still need knowledge of ifnet and thus include if_var.h. They all need to be fixed: sys/dev/mii/brgphy.c sys/dev/mii/e1000phy.c sys/dev/mii/ip1000phy.c sys/dev/mii/jmphy.c sys/dev/mii/nsphy.c sys/dev/mii/rgephy.c sys/dev/mii/truephy.c Sponsored by: Netflix Sponsored by: Nginx, Inc.
616 lines
16 KiB
C
616 lines
16 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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*
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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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* Subroutines common to all PHYs.
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*/
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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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static 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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/*
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* Force renegotiation if MIIF_DOPAUSE or MIIF_FORCEANEG.
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* The former is necessary as we might switch from flow-
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* control advertisement being off to on or vice versa.
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*/
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if ((PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) == 0 ||
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(sc->mii_flags & (MIIF_DOPAUSE | MIIF_FORCEANEG)) != 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 (IFM_SUBTYPE(ife->ifm_media) == IFM_1000_T) {
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gtcr |= GTCR_MAN_MS;
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if ((ife->ifm_media & IFM_ETH_MASTER) != 0)
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gtcr |= GTCR_ADV_MS;
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}
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if ((ife->ifm_media & IFM_FDX) != 0 &&
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((ife->ifm_media & IFM_FLOW) != 0 ||
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(sc->mii_flags & MIIF_FORCEPAUSE) != 0)) {
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if ((sc->mii_flags & MIIF_IS_1000X) != 0)
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anar |= ANAR_X_PAUSE_TOWARDS;
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else {
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anar |= ANAR_FC;
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/* XXX Only 1000BASE-T has PAUSE_ASYM? */
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if ((sc->mii_flags & MIIF_HAVE_GTCR) != 0 &&
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(sc->mii_extcapabilities &
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(EXTSR_1000THDX | EXTSR_1000TFDX)) != 0)
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anar |= ANAR_X_PAUSE_ASYM;
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}
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}
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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) != 0)
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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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struct ifmedia_entry *ife = sc->mii_pdata->mii_media.ifm_cur;
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int anar, gtcr;
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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) != 0) {
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anar = 0;
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if ((sc->mii_extcapabilities & EXTSR_1000XFDX) != 0)
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anar |= ANAR_X_FD;
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if ((sc->mii_extcapabilities & EXTSR_1000XHDX) != 0)
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anar |= ANAR_X_HD;
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if ((ife->ifm_media & IFM_FLOW) != 0 ||
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(sc->mii_flags & MIIF_FORCEPAUSE) != 0)
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anar |= ANAR_X_PAUSE_TOWARDS;
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PHY_WRITE(sc, MII_ANAR, anar);
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} else {
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anar = BMSR_MEDIA_TO_ANAR(sc->mii_capabilities) |
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ANAR_CSMA;
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if ((ife->ifm_media & IFM_FLOW) != 0 ||
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(sc->mii_flags & MIIF_FORCEPAUSE) != 0) {
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if ((sc->mii_capabilities &
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(BMSR_10TFDX | BMSR_100TXFDX)) != 0)
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anar |= ANAR_FC;
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/* XXX Only 1000BASE-T has PAUSE_ASYM? */
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if (((sc->mii_flags & MIIF_HAVE_GTCR) != 0) &&
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(sc->mii_extcapabilities &
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(EXTSR_1000THDX | EXTSR_1000TFDX)) != 0)
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anar |= ANAR_X_PAUSE_ASYM;
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}
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PHY_WRITE(sc, MII_ANAR, anar);
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if ((sc->mii_flags & MIIF_HAVE_GTCR) != 0) {
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gtcr = 0;
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if ((sc->mii_extcapabilities & EXTSR_1000TFDX) != 0)
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gtcr |= GTCR_ADV_1000TFDX;
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if ((sc->mii_extcapabilities & EXTSR_1000THDX) != 0)
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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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int reg;
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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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sc->mii_ticks = 0; /* reset autonegotiation timer. */
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return (0);
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}
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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) != 0) {
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sc->mii_ticks = 0; /* reset autonegotiation timer. */
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/* See above. */
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return (0);
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}
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/* Announce link loss right after it happens */
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if (sc->mii_ticks++ == 0)
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return (0);
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/* XXX: use default value if phy driver did not set mii_anegticks */
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if (sc->mii_anegticks == 0)
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sc->mii_anegticks = MII_ANEGTICKS_GIGE;
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/* Only retry autonegotiation every mii_anegticks ticks. */
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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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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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struct ifmedia_entry *ife = sc->mii_pdata->mii_media.ifm_cur;
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int i, reg;
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if ((sc->mii_flags & MIIF_NOISOLATE) != 0)
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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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/* NB: a PHY may default to being powered down and/or isolated. */
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reg &= ~(BMCR_PDOWN | BMCR_ISO);
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if ((sc->mii_flags & MIIF_NOISOLATE) == 0 &&
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((ife == NULL && sc->mii_inst != 0) ||
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(ife != NULL && IFM_INST(ife->ifm_media) != sc->mii_inst)))
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reg |= BMCR_ISO;
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if (PHY_READ(sc, MII_BMCR) != reg)
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PHY_WRITE(sc, MII_BMCR, reg);
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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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* 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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int fdx = 0;
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if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 &&
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(sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0) {
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printf("no media present");
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return;
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}
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/*
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* Set the autonegotiation timer for 10/100 media. Gigabit media is
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* handled below.
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*/
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sc->mii_anegticks = MII_ANEGTICKS;
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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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PRINT("none");
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}
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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) != 0) {
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if ((sc->mii_capabilities & BMSR_10THDX) != 0) {
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ADD(IFM_MAKEWORD(IFM_ETHER, IFM_HPNA_1, 0,
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sc->mii_inst), 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) != 0) {
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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) != 0) {
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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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if ((sc->mii_flags & MIIF_DOPAUSE) != 0 &&
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(sc->mii_flags & MIIF_NOMANPAUSE) == 0) {
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ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T,
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IFM_FDX | IFM_FLOW, sc->mii_inst),
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MII_MEDIA_10_T_FDX);
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PRINT("10baseT-FDX-flow");
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}
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fdx = 1;
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}
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if ((sc->mii_capabilities & BMSR_100TXHDX) != 0) {
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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) != 0) {
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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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if ((sc->mii_flags & MIIF_DOPAUSE) != 0 &&
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(sc->mii_flags & MIIF_NOMANPAUSE) == 0) {
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ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX,
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IFM_FDX | IFM_FLOW, sc->mii_inst),
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MII_MEDIA_100_TX_FDX);
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PRINT("100baseTX-FDX-flow");
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}
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fdx = 1;
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}
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if ((sc->mii_capabilities & BMSR_100T4) != 0) {
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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) != 0) {
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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 somehow.
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*/
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if ((sc->mii_extcapabilities & EXTSR_1000XHDX) != 0) {
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sc->mii_anegticks = MII_ANEGTICKS_GIGE;
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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) != 0) {
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sc->mii_anegticks = MII_ANEGTICKS_GIGE;
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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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if ((sc->mii_flags & MIIF_DOPAUSE) != 0 &&
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(sc->mii_flags & MIIF_NOMANPAUSE) == 0) {
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ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX,
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IFM_FDX | IFM_FLOW, sc->mii_inst),
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MII_MEDIA_1000_X_FDX);
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PRINT("1000baseSX-FDX-flow");
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}
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fdx = 1;
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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.
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*
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* All 1000baseT PHYs have a 1000baseT control register.
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*/
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if ((sc->mii_extcapabilities & EXTSR_1000THDX) != 0) {
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sc->mii_anegticks = MII_ANEGTICKS_GIGE;
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sc->mii_flags |= MIIF_HAVE_GTCR;
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ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, 0,
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sc->mii_inst), MII_MEDIA_1000_T);
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PRINT("1000baseT");
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ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T,
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IFM_ETH_MASTER, sc->mii_inst), MII_MEDIA_1000_T);
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PRINT("1000baseT-master");
|
|
}
|
|
if ((sc->mii_extcapabilities & EXTSR_1000TFDX) != 0) {
|
|
sc->mii_anegticks = MII_ANEGTICKS_GIGE;
|
|
sc->mii_flags |= MIIF_HAVE_GTCR;
|
|
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, IFM_FDX,
|
|
sc->mii_inst), MII_MEDIA_1000_T_FDX);
|
|
PRINT("1000baseT-FDX");
|
|
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T,
|
|
IFM_FDX | IFM_ETH_MASTER, sc->mii_inst),
|
|
MII_MEDIA_1000_T_FDX);
|
|
PRINT("1000baseT-FDX-master");
|
|
if ((sc->mii_flags & MIIF_DOPAUSE) != 0 &&
|
|
(sc->mii_flags & MIIF_NOMANPAUSE) == 0) {
|
|
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T,
|
|
IFM_FDX | IFM_FLOW, sc->mii_inst),
|
|
MII_MEDIA_1000_T_FDX);
|
|
PRINT("1000baseT-FDX-flow");
|
|
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T,
|
|
IFM_FDX | IFM_FLOW | IFM_ETH_MASTER,
|
|
sc->mii_inst), MII_MEDIA_1000_T_FDX);
|
|
PRINT("1000baseT-FDX-flow-master");
|
|
}
|
|
fdx = 1;
|
|
}
|
|
}
|
|
|
|
if ((sc->mii_capabilities & BMSR_ANEG) != 0) {
|
|
/* intentionally invalid index */
|
|
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst),
|
|
MII_NMEDIA);
|
|
PRINT("auto");
|
|
if (fdx != 0 && (sc->mii_flags & MIIF_DOPAUSE) != 0) {
|
|
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, IFM_FLOW,
|
|
sc->mii_inst), MII_NMEDIA);
|
|
PRINT("auto-flow");
|
|
}
|
|
}
|
|
#undef ADD
|
|
#undef PRINT
|
|
}
|
|
|
|
int
|
|
mii_phy_detach(device_t dev)
|
|
{
|
|
struct mii_softc *sc;
|
|
|
|
sc = device_get_softc(dev);
|
|
mii_phy_down(sc);
|
|
sc->mii_dev = NULL;
|
|
LIST_REMOVE(sc, mii_list);
|
|
return (0);
|
|
}
|
|
|
|
const struct mii_phydesc *
|
|
mii_phy_match_gen(const struct mii_attach_args *ma,
|
|
const struct mii_phydesc *mpd, size_t len)
|
|
{
|
|
|
|
for (; mpd->mpd_name != NULL;
|
|
mpd = (const struct mii_phydesc *)((const char *)mpd + len)) {
|
|
if (MII_OUI(ma->mii_id1, ma->mii_id2) == mpd->mpd_oui &&
|
|
MII_MODEL(ma->mii_id2) == mpd->mpd_model)
|
|
return (mpd);
|
|
}
|
|
return (NULL);
|
|
}
|
|
|
|
const struct mii_phydesc *
|
|
mii_phy_match(const struct mii_attach_args *ma, const struct mii_phydesc *mpd)
|
|
{
|
|
|
|
return (mii_phy_match_gen(ma, mpd, sizeof(struct mii_phydesc)));
|
|
}
|
|
|
|
int
|
|
mii_phy_dev_probe(device_t dev, const struct mii_phydesc *mpd, int mrv)
|
|
{
|
|
|
|
mpd = mii_phy_match(device_get_ivars(dev), mpd);
|
|
if (mpd != NULL) {
|
|
device_set_desc(dev, mpd->mpd_name);
|
|
return (mrv);
|
|
}
|
|
return (ENXIO);
|
|
}
|
|
|
|
void
|
|
mii_phy_dev_attach(device_t dev, u_int flags, const struct mii_phy_funcs *mpf,
|
|
int add_media)
|
|
{
|
|
struct mii_softc *sc;
|
|
struct mii_attach_args *ma;
|
|
struct mii_data *mii;
|
|
|
|
sc = device_get_softc(dev);
|
|
ma = device_get_ivars(dev);
|
|
sc->mii_dev = device_get_parent(dev);
|
|
mii = ma->mii_data;
|
|
LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
|
|
|
|
sc->mii_flags = flags | miibus_get_flags(dev);
|
|
sc->mii_mpd_oui = MII_OUI(ma->mii_id1, ma->mii_id2);
|
|
sc->mii_mpd_model = MII_MODEL(ma->mii_id2);
|
|
sc->mii_mpd_rev = MII_REV(ma->mii_id2);
|
|
sc->mii_capmask = ma->mii_capmask;
|
|
sc->mii_inst = mii->mii_instance++;
|
|
sc->mii_phy = ma->mii_phyno;
|
|
sc->mii_offset = ma->mii_offset;
|
|
sc->mii_funcs = mpf;
|
|
sc->mii_pdata = mii;
|
|
|
|
if (bootverbose)
|
|
device_printf(dev, "OUI 0x%06x, model 0x%04x, rev. %d\n",
|
|
sc->mii_mpd_oui, sc->mii_mpd_model, sc->mii_mpd_rev);
|
|
|
|
if (add_media == 0)
|
|
return;
|
|
|
|
PHY_RESET(sc);
|
|
|
|
sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & sc->mii_capmask;
|
|
if (sc->mii_capabilities & BMSR_EXTSTAT)
|
|
sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
|
|
device_printf(dev, " ");
|
|
mii_phy_add_media(sc);
|
|
printf("\n");
|
|
|
|
MIIBUS_MEDIAINIT(sc->mii_dev);
|
|
}
|
|
|
|
/*
|
|
* Return the flow control status flag from MII_ANAR & MII_ANLPAR.
|
|
*/
|
|
u_int
|
|
mii_phy_flowstatus(struct mii_softc *sc)
|
|
{
|
|
int anar, anlpar;
|
|
|
|
if ((sc->mii_flags & MIIF_DOPAUSE) == 0)
|
|
return (0);
|
|
|
|
anar = PHY_READ(sc, MII_ANAR);
|
|
anlpar = PHY_READ(sc, MII_ANLPAR);
|
|
|
|
/*
|
|
* Check for 1000BASE-X. Autonegotiation is a bit
|
|
* different on such devices.
|
|
*/
|
|
if ((sc->mii_flags & MIIF_IS_1000X) != 0) {
|
|
anar <<= 3;
|
|
anlpar <<= 3;
|
|
}
|
|
|
|
if ((anar & ANAR_PAUSE_SYM) != 0 && (anlpar & ANLPAR_PAUSE_SYM) != 0)
|
|
return (IFM_FLOW | IFM_ETH_TXPAUSE | IFM_ETH_RXPAUSE);
|
|
|
|
if ((anar & ANAR_PAUSE_SYM) == 0) {
|
|
if ((anar & ANAR_PAUSE_ASYM) != 0 &&
|
|
(anlpar & ANLPAR_PAUSE_TOWARDS) != 0)
|
|
return (IFM_FLOW | IFM_ETH_TXPAUSE);
|
|
else
|
|
return (0);
|
|
}
|
|
|
|
if ((anar & ANAR_PAUSE_ASYM) == 0) {
|
|
if ((anlpar & ANLPAR_PAUSE_SYM) != 0)
|
|
return (IFM_FLOW | IFM_ETH_TXPAUSE | IFM_ETH_RXPAUSE);
|
|
else
|
|
return (0);
|
|
}
|
|
|
|
switch ((anlpar & ANLPAR_PAUSE_TOWARDS)) {
|
|
case ANLPAR_PAUSE_NONE:
|
|
return (0);
|
|
case ANLPAR_PAUSE_ASYM:
|
|
return (IFM_FLOW | IFM_ETH_RXPAUSE);
|
|
default:
|
|
return (IFM_FLOW | IFM_ETH_RXPAUSE | IFM_ETH_TXPAUSE);
|
|
}
|
|
/* NOTREACHED */
|
|
}
|