713 lines
18 KiB
C
713 lines
18 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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* SPDX-License-Identifier: BSD-2-Clause
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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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/*
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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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*
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* An array of structures to map MII media types to BMCR/ANAR settings.
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*/
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enum {
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MII_MEDIA_NONE = 0,
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MII_MEDIA_10_T,
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MII_MEDIA_10_T_FDX,
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MII_MEDIA_100_T4,
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MII_MEDIA_100_TX,
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MII_MEDIA_100_TX_FDX,
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MII_MEDIA_1000_X,
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MII_MEDIA_1000_X_FDX,
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MII_MEDIA_1000_T,
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MII_MEDIA_1000_T_FDX,
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MII_NMEDIA,
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};
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static const struct mii_media {
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u_int mm_bmcr; /* BMCR settings for this media */
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u_int mm_anar; /* ANAR settings for this media */
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u_int mm_gtcr; /* 100base-T2 or 1000base-T CR */
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} 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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int index = -1;
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switch (IFM_SUBTYPE(ife->ifm_media)) {
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case 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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case IFM_NONE:
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index = MII_MEDIA_NONE;
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break;
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case IFM_HPNA_1:
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index = MII_MEDIA_10_T;
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break;
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case IFM_10_T:
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switch (IFM_OPTIONS(ife->ifm_media)) {
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case 0:
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index = MII_MEDIA_10_T;
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break;
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case IFM_FDX:
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case (IFM_FDX | IFM_FLOW):
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index = MII_MEDIA_10_T_FDX;
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break;
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}
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break;
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case IFM_100_TX:
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case IFM_100_FX:
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switch (IFM_OPTIONS(ife->ifm_media)) {
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case 0:
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index = MII_MEDIA_100_TX;
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break;
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case IFM_FDX:
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case (IFM_FDX | IFM_FLOW):
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index = MII_MEDIA_100_TX_FDX;
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break;
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}
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break;
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case IFM_100_T4:
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index = MII_MEDIA_100_T4;
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break;
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case IFM_1000_SX:
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switch (IFM_OPTIONS(ife->ifm_media)) {
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case 0:
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index = MII_MEDIA_1000_X;
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break;
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case IFM_FDX:
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case (IFM_FDX | IFM_FLOW):
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index = MII_MEDIA_1000_X_FDX;
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break;
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}
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break;
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case IFM_1000_T:
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switch (IFM_OPTIONS(ife->ifm_media)) {
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case 0:
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case IFM_ETH_MASTER:
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index = MII_MEDIA_1000_T;
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break;
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case IFM_FDX:
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case (IFM_FDX | IFM_ETH_MASTER):
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case (IFM_FDX | IFM_FLOW):
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case (IFM_FDX | IFM_FLOW | IFM_ETH_MASTER):
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index = MII_MEDIA_1000_T_FDX;
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break;
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}
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break;
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}
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KASSERT(index != -1, ("%s: failed to map media word %d",
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__func__, ife->ifm_media));
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anar = mii_media_table[index].mm_anar;
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bmcr = mii_media_table[index].mm_bmcr;
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gtcr = mii_media_table[index].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_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) ifmedia_add(&mii->mii_media, (m), 0, 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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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));
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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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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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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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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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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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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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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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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;
|
|
sc->mii_flags |= MIIF_IS_1000X;
|
|
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0,
|
|
sc->mii_inst));
|
|
PRINT("1000baseSX");
|
|
}
|
|
if ((sc->mii_extcapabilities & EXTSR_1000XFDX) != 0) {
|
|
sc->mii_anegticks = MII_ANEGTICKS_GIGE;
|
|
sc->mii_flags |= MIIF_IS_1000X;
|
|
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX,
|
|
sc->mii_inst));
|
|
PRINT("1000baseSX-FDX");
|
|
if ((sc->mii_flags & MIIF_DOPAUSE) != 0 &&
|
|
(sc->mii_flags & MIIF_NOMANPAUSE) == 0) {
|
|
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX,
|
|
IFM_FDX | IFM_FLOW, sc->mii_inst));
|
|
PRINT("1000baseSX-FDX-flow");
|
|
}
|
|
fdx = 1;
|
|
}
|
|
|
|
/*
|
|
* 1000baseT media needs to be able to manipulate
|
|
* master/slave mode.
|
|
*
|
|
* All 1000baseT PHYs have a 1000baseT control register.
|
|
*/
|
|
if ((sc->mii_extcapabilities & EXTSR_1000THDX) != 0) {
|
|
sc->mii_anegticks = MII_ANEGTICKS_GIGE;
|
|
sc->mii_flags |= MIIF_HAVE_GTCR;
|
|
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, 0,
|
|
sc->mii_inst));
|
|
PRINT("1000baseT");
|
|
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T,
|
|
IFM_ETH_MASTER, sc->mii_inst));
|
|
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));
|
|
PRINT("1000baseT-FDX");
|
|
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T,
|
|
IFM_FDX | IFM_ETH_MASTER, sc->mii_inst));
|
|
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));
|
|
PRINT("1000baseT-FDX-flow");
|
|
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T,
|
|
IFM_FDX | IFM_FLOW | IFM_ETH_MASTER,
|
|
sc->mii_inst));
|
|
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));
|
|
PRINT("auto");
|
|
if (fdx != 0 && (sc->mii_flags & MIIF_DOPAUSE) != 0) {
|
|
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, IFM_FLOW,
|
|
sc->mii_inst));
|
|
PRINT("auto-flow");
|
|
}
|
|
}
|
|
#undef ADD
|
|
#undef PRINT
|
|
}
|
|
|
|
int
|
|
mii_phy_detach(device_t dev)
|
|
{
|
|
struct mii_softc *sc;
|
|
|
|
sc = device_get_softc(dev);
|
|
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);
|
|
|
|
switch (sc->mii_maxspeed) {
|
|
case 100:
|
|
/*
|
|
* This is a bit tricky.
|
|
* If we have a 1G capable PHY, but we don't want to advertise
|
|
* 1G capabilities we need to clear the GTCR register before
|
|
* doing autonegotiation.
|
|
* Clearing the register here is not enough since its value
|
|
* can be restored after PHY_RESET is called.
|
|
*/
|
|
if ((sc->mii_extcapabilities &
|
|
(EXTSR_1000THDX | EXTSR_1000TFDX)) != 0)
|
|
sc->mii_flags |= MIIF_HAVE_GTCR;
|
|
|
|
sc->mii_extcapabilities = 0;
|
|
break;
|
|
default:
|
|
device_printf(dev,
|
|
"Ignoring unsupported max speed value of %d\n",
|
|
sc->mii_maxspeed);
|
|
case 0:
|
|
case 1000:
|
|
break;
|
|
}
|
|
device_printf(dev, " ");
|
|
mii_phy_add_media(sc);
|
|
printf("\n");
|
|
|
|
MIIBUS_MEDIAINIT(sc->mii_dev);
|
|
|
|
/*
|
|
* If maxspeed was specified we have to restart autonegotiation.
|
|
* PHY might have attempted it and failed due to having mistakenly
|
|
* advertising modes that we do not in fact support.
|
|
*/
|
|
if (sc->mii_maxspeed != 0) {
|
|
sc->mii_flags |= MIIF_FORCEANEG;
|
|
mii_phy_setmedia(sc);
|
|
sc->mii_flags &= ~MIIF_FORCEANEG;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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 */
|
|
}
|