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/* $OpenBSD: bmtphy.c,v 1.3 2001/06/18 06:31:59 deraadt Exp $ */
/* $NetBSD: nsphy.c,v 1.25 2000/02/02 23:34:57 thorpej Exp $ */
/*-
* Copyright (c) 2001 Theo de Raadt
*
* 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 REGENTS 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 REGENTS 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 Broadcom BCM5201/5202 Mini-Theta ethernet 10/100 PHY
* Data Sheet available from Broadcom
*/
#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 <sys/errno.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>
#include <dev/mii/bmtphyreg.h>
int bmtphymatch __P((struct device *, void *, void *));
void bmtphyattach __P((struct device *, struct device *, void *));
struct cfattach bmtphy_ca = {
sizeof(struct mii_softc), bmtphymatch, bmtphyattach, mii_phy_detach,
mii_phy_activate
};
struct cfdriver bmtphy_cd = {
NULL, "bmtphy", DV_DULL
};
int bmtphy_service __P((struct mii_softc *, struct mii_data *, int));
void bmtphy_status __P((struct mii_softc *));
void bmtphy_reset __P((struct mii_softc *));
int
bmtphymatch(parent, match, aux)
struct device *parent;
void *match;
void *aux;
{
struct mii_attach_args *ma = aux;
if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_BROADCOM &&
MII_MODEL(ma->mii_id2) == MII_MODEL_BROADCOM_BCM5201)
return (10);
if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_BROADCOM &&
MII_MODEL(ma->mii_id2) == MII_MODEL_BROADCOM_BCM5221)
return (10);
return (0);
}
void
bmtphyattach(parent, self, aux)
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;
char *model;
if (MII_MODEL(ma->mii_id2) == MII_MODEL_BROADCOM_BCM5201)
model = MII_STR_BROADCOM_BCM5201;
else if (MII_MODEL(ma->mii_id2) == MII_MODEL_BROADCOM_BCM5221)
model = MII_STR_BROADCOM_BCM5221;
printf(": %s, rev. %d\n", model, MII_REV(ma->mii_id2));
sc->mii_inst = mii->mii_instance;
sc->mii_phy = ma->mii_phyno;
sc->mii_service = bmtphy_service;
sc->mii_status = bmtphy_status;
sc->mii_pdata = mii;
sc->mii_flags = mii->mii_flags;
bmtphy_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
bmtphy_service(sc, mii, cmd)
struct mii_softc *sc;
struct mii_data *mii;
int cmd;
{
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
int reg;
if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
return (ENXIO);
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,
* isolate ourselves.
*/
if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
reg = PHY_READ(sc, MII_BMCR);
PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
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);
/*
* 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);
/*
* Check to see if we have link. If we do, we don't
* need to restart the autonegotiation process. Read
* the BMSR twice in case it's latched.
*/
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 (0);
sc->mii_ticks = 0;
bmtphy_reset(sc);
if (mii_phy_auto(sc, 0) == 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);
}
void
bmtphy_status(sc)
struct mii_softc *sc;
{
struct mii_data *mii = sc->mii_pdata;
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
int bmsr, bmcr, auxc;
mii->mii_media_status = IFM_AVALID;
mii->mii_media_active = IFM_ETHER;
bmsr = PHY_READ(sc, MII_BMSR) |
PHY_READ(sc, MII_BMSR);
if (bmsr & BMSR_LINK)
mii->mii_media_status |= IFM_ACTIVE;
bmcr = PHY_READ(sc, MII_BMCR);
if (bmcr & BMCR_ISO) {
mii->mii_media_active |= IFM_NONE;
mii->mii_media_status = 0;
return;
}
if (bmcr & BMCR_LOOP)
mii->mii_media_active |= IFM_LOOP;
if (bmcr & BMCR_AUTOEN) {
/*
* The later are only valid if autonegotiation
* has completed (or it's disabled).
*/
if ((bmsr & BMSR_ACOMP) == 0) {
/* Erg, still trying, I guess... */
mii->mii_media_active |= IFM_NONE;
return;
}
auxc = PHY_READ(sc, MII_BMTPHY_AUXC);
if (auxc & AUXC_SP100)
mii->mii_media_active |= IFM_100_TX;
else
mii->mii_media_active |= IFM_10_T;
if (auxc & AUXC_FDX)
mii->mii_media_active |= IFM_FDX;
} else
mii->mii_media_active = ife->ifm_media;
}
void
bmtphy_reset(sc)
struct mii_softc *sc;
{
int anar;
mii_phy_reset(sc);
anar = PHY_READ(sc, MII_ANAR);
anar |= BMSR_MEDIA_TO_ANAR(PHY_READ(sc, MII_BMSR));
PHY_WRITE(sc, MII_ANAR, anar);
/* Chip resets with FDX bit not set */
PHY_WRITE(sc, MII_BMCR, PHY_READ(sc, MII_BMCR) |
BMCR_S100|BMCR_AUTOEN|BMCR_STARTNEG|BMCR_FDX);
}
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