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/* $OpenBSD: luphy.c,v 1.7 2022/04/06 18:59:29 naddy Exp $ */
/*-
* Copyright (c) 2004 Marius Strobl
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*/
/*
* Driver for the Lucent Technologies LU6612 Ethernet 10/100 PHY, which
* is pin-compatible to the Quality Semiconductor QS6612 but uses a
* different register layout. Sun Microsystems uses the LU6612 together
* with their HME chip on a couple of bords originally designed for the
* QS6612. At least on these boards none of the LU6612 must be isolated
* otherwise the MII bus wedges and the other one (there can be a maximum
* of two PHYs connected to the HME) no longer can communicate with the
* HME (powering down the unused PHY etc. also doesn't help). This is
* why we can't use the ukphy driver for the LU6612.
* The datasheet for the LU6612 is no longer available on lucent.com or
* www.agere.com (former Lucent Microelectronics Group) but you still
* should be able to find it when searching for DS00355.pdf or LU6612.pdf.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/socket.h>
#include <net/if.h>
#include <net/if_var.h>
#include <net/if_media.h>
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
#include <dev/mii/miidevs.h>
int luphymatch(struct device *, void *, void *);
void luphyattach(struct device *, struct device *, void *);
const struct cfattach luphy_ca = {
sizeof(struct mii_softc), luphymatch, luphyattach, mii_phy_detach
};
struct cfdriver luphy_cd = {
NULL, "luphy", DV_DULL
};
int luphy_service(struct mii_softc *, struct mii_data *, int);
const struct mii_phy_funcs luphy_funcs = {
luphy_service, ukphy_status, mii_phy_reset,
};
static const struct mii_phydesc luphys[] = {
{ MII_OUI_LUCENT, MII_MODEL_LUCENT_LU6612,
MII_STR_LUCENT_LU6612 },
{ 0, 0,
NULL },
};
int
luphymatch(struct device *parent, void *match, void *aux)
{
struct mii_attach_args *ma = aux;
if (mii_phy_match(ma, luphys) != NULL)
return (10);
return (0);
}
void
luphyattach(struct device *parent, struct device *self, void *aux)
{
struct mii_softc *sc = (struct mii_softc *)self;
struct mii_attach_args *ma = aux;
struct mii_data *mii = ma->mii_data;
const struct mii_phydesc *mpd;
mpd = mii_phy_match(ma, luphys);
printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
sc->mii_inst = mii->mii_instance;
sc->mii_phy = ma->mii_phyno;
sc->mii_funcs = &luphy_funcs;
sc->mii_pdata = mii;
sc->mii_flags = ma->mii_flags;
sc->mii_flags |= MIIF_NOISOLATE;
PHY_RESET(sc);
sc->mii_capabilities =
PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
if (sc->mii_capabilities & BMSR_MEDIAMASK)
mii_phy_add_media(sc);
}
int
luphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
{
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
switch (cmd) {
case MII_POLLSTAT:
/*
* If we're not polling our PHY instance, just return.
*/
if (IFM_INST(ife->ifm_media) != sc->mii_inst)
return (0);
break;
case MII_MEDIACHG:
/*
* If the media indicates a different PHY instance,
* just return. Isolating unused PHYs from the bus
* causes at least the MII bus of the HME to wedge.
*/
if (IFM_INST(ife->ifm_media) != sc->mii_inst)
return (0);
/*
* If the interface is not up, don't do anything.
*/
if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
break;
mii_phy_setmedia(sc);
break;
case MII_TICK:
/*
* If we're not currently selected, just return.
*/
if (IFM_INST(ife->ifm_media) != sc->mii_inst)
return (0);
if (mii_phy_tick(sc) == EJUSTRETURN)
return (0);
break;
case MII_DOWN:
mii_phy_down(sc);
return (0);
}
/* Update the media status. */
mii_phy_status(sc);
/* Callback if something changed. */
mii_phy_update(sc, cmd);
return (0);
}
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