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/* $OpenBSD: mii_physubr.c,v 1.2 1999/07/16 14:59:07 jason Exp $ */
/* $NetBSD: mii_physubr.c,v 1.2.6.1 1999/04/23 15:40:26 perry Exp $ */
/*-
* Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
* NASA Ames Research Center.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Subroutines common to all PHYs.
*/
#include <sys/param.h>
#include <sys/device.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <sys/errno.h>
#include <net/if.h>
#include <net/if_media.h>
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
void mii_phy_auto_timeout __P((void *));
int
mii_phy_auto(mii, waitfor)
struct mii_softc *mii;
{
int bmsr, i;
if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) {
PHY_WRITE(mii, MII_ANAR,
BMSR_MEDIA_TO_ANAR(mii->mii_capabilities) | ANAR_CSMA);
PHY_WRITE(mii, MII_BMCR, BMCR_AUTOEN | BMCR_STARTNEG);
}
if (waitfor) {
/* Wait 500ms for it to complete. */
for (i = 0; i < 500; i++) {
if ((bmsr = PHY_READ(mii, MII_BMSR)) & BMSR_ACOMP)
return (0);
delay(1000);
#if 0
if ((bmsr & BMSR_ACOMP) == 0)
printf("%s: autonegotiation failed to complete\n",
mii->mii_dev.dv_xname);
#endif
}
/*
* Don't need to worry about clearing MIIF_DOINGAUTO.
* If that's set, a timeout is pending, and it will
* clear the flag.
*/
return (EIO);
}
/*
* Just let it finish asynchronously. This is for the benefit of
* the tick handler driving autonegotiation. Don't want 500ms
* delays all the time while the system is running!
*/
if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) {
mii->mii_flags |= MIIF_DOINGAUTO;
timeout(mii_phy_auto_timeout, mii, hz >> 1);
}
return (EJUSTRETURN);
}
void
mii_phy_auto_timeout(arg)
void *arg;
{
struct mii_softc *mii = arg;
int s, bmsr;
s = splnet();
mii->mii_flags &= ~MIIF_DOINGAUTO;
bmsr = PHY_READ(mii, MII_BMSR);
#if 0
if ((bmsr & BMSR_ACOMP) == 0)
printf("%s: autonegotiation failed to complete\n",
sc->sc_dev.dv_xname);
#endif
/* Update the media status. */
(void) (*mii->mii_service)(mii, mii->mii_pdata, MII_POLLSTAT);
splx(s);
}
void
mii_phy_reset(mii)
struct mii_softc *mii;
{
int reg, i;
if (mii->mii_flags & MIIF_NOISOLATE)
reg = BMCR_RESET;
else
reg = BMCR_RESET | BMCR_ISO;
PHY_WRITE(mii, MII_BMCR, reg);
/* Wait 100ms for it to complete. */
for (i = 0; i < 100; i++) {
reg = PHY_READ(mii, MII_BMCR);
if ((reg & BMCR_RESET) == 0)
break;
delay(1000);
}
if (mii->mii_inst != 0 && ((mii->mii_flags & MIIF_NOISOLATE) == 0))
PHY_WRITE(mii, MII_BMCR, reg | BMCR_ISO);
}
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