351 lines
8.3 KiB
C
351 lines
8.3 KiB
C
/* $NetBSD: mii_physubr.c,v 1.5 1999/08/03 19:41:49 drochner 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/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/errno.h>
|
|
#include <sys/module.h>
|
|
#include <sys/bus.h>
|
|
|
|
|
|
#include <net/if.h>
|
|
#include <net/if_media.h>
|
|
|
|
#include <dev/mii/mii.h>
|
|
#include <dev/mii/miivar.h>
|
|
|
|
#include "miibus_if.h"
|
|
|
|
#if !defined(lint)
|
|
static const char rcsid[] =
|
|
"$FreeBSD$";
|
|
#endif
|
|
|
|
void mii_phy_auto_timeout(void *);
|
|
|
|
int
|
|
mii_phy_auto(mii, waitfor)
|
|
struct mii_softc *mii;
|
|
int waitfor;
|
|
{
|
|
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;
|
|
mii->mii_auto_ch = timeout(mii_phy_auto_timeout, mii, hz >> 1);
|
|
}
|
|
return (EJUSTRETURN);
|
|
}
|
|
|
|
void
|
|
mii_phy_auto_stop(sc)
|
|
struct mii_softc *sc;
|
|
{
|
|
if (sc->mii_flags & MIIF_DOINGAUTO) {
|
|
sc->mii_flags &= ~MIIF_DOINGAUTO;
|
|
untimeout(mii_phy_auto_timeout, sc, sc->mii_auto_ch);
|
|
}
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
int
|
|
mii_phy_tick(sc)
|
|
struct mii_softc *sc;
|
|
{
|
|
struct ifmedia_entry *ife = sc->mii_pdata->mii_media.ifm_cur;
|
|
struct ifnet *ifp = sc->mii_pdata->mii_ifp;
|
|
int reg;
|
|
|
|
/*
|
|
* Is the interface even up?
|
|
*/
|
|
if ((ifp->if_flags & IFF_UP) == 0)
|
|
return (EJUSTRETURN);
|
|
|
|
/*
|
|
* If we're not doing autonegotiation, we don't need to do
|
|
* any extra work here. However, we need to check the link
|
|
* status so we can generate an announcement if the status
|
|
* changes.
|
|
*/
|
|
if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
|
|
return (0);
|
|
|
|
/*
|
|
* check for link.
|
|
* Read the status register twice; BMSR_LINK is latch-low.
|
|
*/
|
|
reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
|
|
if (reg & BMSR_LINK)
|
|
return (0);
|
|
|
|
/*
|
|
* Only retry autonegotiation every 5 seconds.
|
|
*/
|
|
if (++sc->mii_ticks != 5)
|
|
return (EJUSTRETURN);
|
|
|
|
sc->mii_ticks = 0;
|
|
mii_phy_reset(sc);
|
|
if (mii_phy_auto(sc, 0) == EJUSTRETURN)
|
|
return (EJUSTRETURN);
|
|
|
|
/*
|
|
* Might need to generate a status message if autonegotiation
|
|
* failed.
|
|
*/
|
|
return (0);
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
void
|
|
mii_phy_update(sc, cmd)
|
|
struct mii_softc *sc;
|
|
int cmd;
|
|
{
|
|
struct mii_data *mii = sc->mii_pdata;
|
|
|
|
if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) {
|
|
MIIBUS_STATCHG(sc->mii_dev);
|
|
sc->mii_active = mii->mii_media_active;
|
|
}
|
|
if (sc->mii_status != mii->mii_media_status) {
|
|
MIIBUS_LINKCHG(sc->mii_dev);
|
|
sc->mii_status = mii->mii_media_status;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Given an ifmedia word, return the corresponding ANAR value.
|
|
*/
|
|
int
|
|
mii_anar(media)
|
|
int media;
|
|
{
|
|
int rv;
|
|
|
|
switch (media & (IFM_TMASK|IFM_NMASK|IFM_FDX)) {
|
|
case IFM_ETHER|IFM_10_T:
|
|
rv = ANAR_10|ANAR_CSMA;
|
|
break;
|
|
case IFM_ETHER|IFM_10_T|IFM_FDX:
|
|
rv = ANAR_10_FD|ANAR_CSMA;
|
|
break;
|
|
case IFM_ETHER|IFM_100_TX:
|
|
rv = ANAR_TX|ANAR_CSMA;
|
|
break;
|
|
case IFM_ETHER|IFM_100_TX|IFM_FDX:
|
|
rv = ANAR_TX_FD|ANAR_CSMA;
|
|
break;
|
|
case IFM_ETHER|IFM_100_T4:
|
|
rv = ANAR_T4|ANAR_CSMA;
|
|
break;
|
|
default:
|
|
rv = 0;
|
|
break;
|
|
}
|
|
|
|
return (rv);
|
|
}
|
|
|
|
/*
|
|
* Given a BMCR value, return the corresponding ifmedia word.
|
|
*/
|
|
int
|
|
mii_media_from_bmcr(bmcr)
|
|
int bmcr;
|
|
{
|
|
int rv = IFM_ETHER;
|
|
|
|
if (bmcr & BMCR_S100)
|
|
rv |= IFM_100_TX;
|
|
else
|
|
rv |= IFM_10_T;
|
|
if (bmcr & BMCR_FDX)
|
|
rv |= IFM_FDX;
|
|
|
|
return (rv);
|
|
}
|
|
|
|
/*
|
|
* Initialize generic PHY media based on BMSR, called when a PHY is
|
|
* attached. We expect to be set up to print a comma-separated list
|
|
* of media names. Does not print a newline.
|
|
*/
|
|
void
|
|
mii_add_media(struct mii_softc *sc)
|
|
{
|
|
const char *sep = "";
|
|
int bmsr, instance;
|
|
struct mii_data *mii;
|
|
|
|
bmsr = sc->mii_capabilities;
|
|
instance = sc->mii_inst;
|
|
mii = device_get_softc(sc->mii_dev);
|
|
if ((bmsr & BMSR_MEDIAMASK) == 0) {
|
|
printf("no media present");
|
|
return;
|
|
}
|
|
|
|
#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
|
|
#define PRINT(s) printf("%s%s", sep, s); sep = ", "
|
|
|
|
if (bmsr & BMSR_10THDX) {
|
|
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, instance), 0);
|
|
PRINT("10baseT");
|
|
}
|
|
if (bmsr & BMSR_10TFDX) {
|
|
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_FDX, instance),
|
|
BMCR_FDX);
|
|
PRINT("10baseT-FDX");
|
|
}
|
|
if (bmsr & BMSR_100TXHDX) {
|
|
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, 0, instance),
|
|
BMCR_S100);
|
|
PRINT("100baseTX");
|
|
}
|
|
if (bmsr & BMSR_100TXFDX) {
|
|
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_FDX, instance),
|
|
BMCR_S100|BMCR_FDX);
|
|
PRINT("100baseTX-FDX");
|
|
}
|
|
if (bmsr & BMSR_100T4) {
|
|
/*
|
|
* XXX How do you enable 100baseT4? I assume we set
|
|
* XXX BMCR_S100 and then assume the PHYs will take
|
|
* XXX watever action is necessary to switch themselves
|
|
* XXX into T4 mode.
|
|
*/
|
|
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_T4, 0, instance),
|
|
BMCR_S100);
|
|
PRINT("100baseT4");
|
|
}
|
|
if (bmsr & BMSR_ANEG) {
|
|
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, instance),
|
|
BMCR_AUTOEN);
|
|
PRINT("auto");
|
|
}
|
|
|
|
|
|
|
|
#undef ADD
|
|
#undef PRINT
|
|
}
|