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/* $OpenBSD: exphy.c,v 1.7 2000/02/16 05:06:01 jason Exp $ */
/* $NetBSD: exphy.c,v 1.15.6.1 1999/04/23 15:39:33 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, and by Frank van der Linden.
*
* 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.
*/
/*
* Copyright (c) 1997 Manuel Bouyer. All rights reserved.
*
* 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 Manuel Bouyer.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
/*
* driver for 3Com internal PHYs
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/socket.h>
#include <net/if.h>
#include <net/if_media.h>
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
#include <dev/mii/miidevs.h>
int exphymatch __P((struct device *, void *, void *));
void exphyattach __P((struct device *, struct device *, void *));
struct cfattach exphy_ca = {
sizeof(struct mii_softc), exphymatch, exphyattach
};
struct cfdriver exphy_cd = {
NULL, "exphy", DV_DULL
};
int exphy_service __P((struct mii_softc *, struct mii_data *, int));
void exphy_reset __P((struct mii_softc *));
int
exphymatch(parent, match, aux)
struct device *parent;
void *match;
void *aux;
{
struct mii_attach_args *ma = aux;
/*
* Argh, 3Com PHY reports oui == 0 model == 0!
*/
if ((MII_OUI(ma->mii_id1, ma->mii_id2) != 0 ||
MII_MODEL(ma->mii_id2) != 0) &&
(MII_OUI(ma->mii_id1, ma->mii_id2) != MII_OUI_BROADCOM ||
MII_MODEL(ma->mii_id2) != MII_MODEL_BROADCOM_3C905C))
return (0);
/*
* Make sure the parent is an `xl'.
*/
if (strcmp(parent->dv_cfdata->cf_driver->cd_name, "xl") != 0)
return (0);
return (10);
}
void
exphyattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct mii_softc *sc = (struct mii_softc *)self;
struct mii_attach_args *ma = aux;
struct mii_data *mii = ma->mii_data;
if (MII_OUI(ma->mii_id1, ma->mii_id2) == 0 &&
MII_MODEL(ma->mii_id2) == 0)
printf(": 3Com internal media interface\n");
else if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_BROADCOM &&
MII_MODEL(ma->mii_id2) == MII_MODEL_BROADCOM_3C905C)
printf(": %s, rev. %d\n", MII_STR_BROADCOM_3C905C,
MII_REV(ma->mii_id2));
else
printf(": unknown phy\n");
sc->mii_inst = mii->mii_instance;
sc->mii_phy = ma->mii_phyno;
sc->mii_service = exphy_service;
sc->mii_pdata = mii;
/*
* The 3Com PHY can never be isolated, so never allow non-zero
* instances!
*/
if (mii->mii_instance != 0) {
printf("%s: ignoring this PHY, non-zero instance\n",
sc->mii_dev.dv_xname);
return;
}
sc->mii_flags |= MIIF_NOISOLATE;
exphy_reset(sc);
sc->mii_capabilities =
PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
if (sc->mii_capabilities & BMSR_MEDIAMASK)
mii_add_media(sc);
}
int
exphy_service(sc, mii, cmd)
struct mii_softc *sc;
struct mii_data *mii;
int cmd;
{
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
/*
* We can't isolate the 3Com PHY, so it has to be the only one!
*/
if (IFM_INST(ife->ifm_media) != sc->mii_inst)
panic("exphy_service: can't isolate 3Com PHY");
switch (cmd) {
case MII_POLLSTAT:
break;
case MII_MEDIACHG:
/*
* If the interface is not up, don't do anything.
*/
if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
break;
switch (IFM_SUBTYPE(ife->ifm_media)) {
case IFM_AUTO:
/*
* If we're already in auto mode, just return.
*/
if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN)
return (0);
(void) mii_phy_auto(sc, 1);
break;
default:
mii_phy_setmedia(sc);
}
break;
case MII_TICK:
/*
* Only used for autonegotiation.
*/
if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
return (0);
/*
* Is the interface even up?
*/
if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
return (0);
/*
* The 3Com PHY's autonegotiation doesn't need to be
* kicked; it continues in the background.
*/
break;
case MII_DOWN:
mii_phy_down(sc);
return (0);
}
/* Update the media status. */
ukphy_status(sc);
/* Callback if something changed. */
if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) {
(*mii->mii_statchg)(sc->mii_dev.dv_parent);
sc->mii_active = mii->mii_media_active;
}
return (0);
}
void
exphy_reset(sc)
struct mii_softc *sc;
{
mii_phy_reset(sc);
/*
* XXX 3Com PHY doesn't set the BMCR properly after
* XXX reset, which breaks autonegotiation.
*/
PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_AUTOEN|BMCR_FDX);
}
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