102 lines
3.2 KiB
C
102 lines
3.2 KiB
C
/* $NetBSD: mii_physubr.c,v 1.2 1998/11/04 23:28:15 thorpej Exp $ */
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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.
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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/param.h>
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#include <sys/device.h>
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#include <sys/systm.h>
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#include <sys/socket.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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int
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mii_phy_auto(mii)
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struct mii_softc *mii;
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{
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int bmsr, i;
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PHY_WRITE(mii, MII_ANAR,
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BMSR_MEDIA_TO_ANAR(mii->mii_capabilities) | ANAR_CSMA);
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PHY_WRITE(mii, MII_BMCR, BMCR_AUTOEN | BMCR_STARTNEG);
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/* Wait 500ms for it to complete. */
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for (i = 0; i < 500; i++) {
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if ((bmsr = PHY_READ(mii, MII_BMSR)) & BMSR_ACOMP)
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return (1);
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delay(1000);
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}
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#if 0
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if ((bmsr & BMSR_ACOMP) == 0)
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printf("%s: autonegotiation failed to complete\n",
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mii->mii_dev.dv_xname);
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#endif
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return (0);
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}
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void
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mii_phy_reset(mii)
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struct mii_softc *mii;
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{
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int reg, i;
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if (mii->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(mii, 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(mii, 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 (mii->mii_inst != 0 && ((mii->mii_flags & MIIF_NOISOLATE) == 0))
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PHY_WRITE(mii, MII_BMCR, reg | BMCR_ISO);
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}
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