130 lines
4.2 KiB
C
130 lines
4.2 KiB
C
/* $NetBSD: ukphy_subr.c,v 1.2 1998/11/05 04:08:02 thorpej 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 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, and by Frank van der Linden.
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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 shared by the ukphy driver and other PHY drivers.
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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/socket.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 status subroutine. If a PHY driver does media detection simply
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* by decoding the NWay autonegotiation, use this routine.
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*/
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void
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ukphy_status(struct mii_softc *phy)
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{
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struct mii_data *mii = phy->mii_pdata;
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struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
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int bmsr, bmcr, anlpar, gtcr, gtsr;
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mii->mii_media_status = IFM_AVALID;
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mii->mii_media_active = IFM_ETHER;
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bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR);
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if (bmsr & BMSR_LINK)
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mii->mii_media_status |= IFM_ACTIVE;
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bmcr = PHY_READ(phy, MII_BMCR);
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if (bmcr & BMCR_ISO) {
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mii->mii_media_active |= IFM_NONE;
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mii->mii_media_status = 0;
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return;
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}
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if (bmcr & BMCR_LOOP)
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mii->mii_media_active |= IFM_LOOP;
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if (bmcr & BMCR_AUTOEN) {
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/*
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* NWay autonegotiation takes the highest-order common
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* bit of the ANAR and ANLPAR (i.e. best media advertised
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* both by us and our link partner).
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*/
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if ((bmsr & BMSR_ACOMP) == 0) {
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/* Erg, still trying, I guess... */
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mii->mii_media_active |= IFM_NONE;
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return;
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}
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anlpar = PHY_READ(phy, MII_ANAR) & PHY_READ(phy, MII_ANLPAR);
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if ((phy->mii_flags & MIIF_HAVE_GTCR) != 0 &&
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(phy->mii_extcapabilities &
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(EXTSR_1000THDX | EXTSR_1000TFDX)) != 0) {
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gtcr = PHY_READ(phy, MII_100T2CR);
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gtsr = PHY_READ(phy, MII_100T2SR);
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} else
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gtcr = gtsr = 0;
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if ((gtcr & GTCR_ADV_1000TFDX) && (gtsr & GTSR_LP_1000TFDX))
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mii->mii_media_active |= IFM_1000_T|IFM_FDX;
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else if ((gtcr & GTCR_ADV_1000THDX) &&
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(gtsr & GTSR_LP_1000THDX))
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mii->mii_media_active |= IFM_1000_T|IFM_HDX;
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else if (anlpar & ANLPAR_TX_FD)
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mii->mii_media_active |= IFM_100_TX|IFM_FDX;
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else if (anlpar & ANLPAR_T4)
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mii->mii_media_active |= IFM_100_T4|IFM_HDX;
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else if (anlpar & ANLPAR_TX)
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mii->mii_media_active |= IFM_100_TX|IFM_HDX;
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else if (anlpar & ANLPAR_10_FD)
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mii->mii_media_active |= IFM_10_T|IFM_FDX;
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else if (anlpar & ANLPAR_10)
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mii->mii_media_active |= IFM_10_T|IFM_HDX;
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else
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mii->mii_media_active |= IFM_NONE;
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if ((mii->mii_media_active & IFM_1000_T) != 0 &&
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(gtsr & GTSR_MS_RES) != 0)
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mii->mii_media_active |= IFM_ETH_MASTER;
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if ((mii->mii_media_active & IFM_FDX) != 0)
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mii->mii_media_active |= mii_phy_flowstatus(phy);
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} else
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mii->mii_media_active = ife->ifm_media;
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}
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