NetBSD/sys/dev/mii/lxtphy.c

323 lines
9.4 KiB
C

/* $NetBSD: lxtphy.c,v 1.34 2004/08/23 06:16:06 thorpej Exp $ */
/*-
* Copyright (c) 1998, 1999, 2000 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.
*/
/*
* 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 Level One's LXT-970 ethernet 10/100 PHY
* datasheet from www.level1.com
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: lxtphy.c,v 1.34 2004/08/23 06:16:06 thorpej Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.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/lxtphyreg.h>
static int lxtphymatch(struct device *, struct cfdata *, void *);
static void lxtphyattach(struct device *, struct device *, void *);
CFATTACH_DECL(lxtphy, sizeof(struct mii_softc),
lxtphymatch, lxtphyattach, mii_phy_detach, mii_phy_activate);
static int lxtphy_service(struct mii_softc *, struct mii_data *, int);
static void lxtphy_status(struct mii_softc *);
static void lxtphy_reset(struct mii_softc *);
static void lxtphy_set_tp(struct mii_softc *);
static void lxtphy_set_fx(struct mii_softc *);
static const struct mii_phy_funcs lxtphy_funcs = {
lxtphy_service, lxtphy_status, lxtphy_reset,
};
static const struct mii_phy_funcs lxtphy971_funcs = {
lxtphy_service, ukphy_status, lxtphy_reset,
};
static const struct mii_phydesc lxtphys[] = {
{ MII_OUI_xxLEVEL1, MII_MODEL_xxLEVEL1_LXT970,
MII_STR_xxLEVEL1_LXT970 },
{ MII_OUI_LEVEL1, MII_MODEL_LEVEL1_LXT971,
MII_STR_LEVEL1_LXT971 },
{ 0, 0,
NULL },
};
static int
lxtphymatch(struct device *parent, struct cfdata *match, void *aux)
{
struct mii_attach_args *ma = aux;
if (mii_phy_match(ma, lxtphys) != NULL)
return (10);
return (0);
}
static void
lxtphyattach(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, lxtphys);
aprint_naive(": Media interface\n");
aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
sc->mii_inst = mii->mii_instance;
sc->mii_phy = ma->mii_phyno;
if (mpd->mpd_model == MII_MODEL_LEVEL1_LXT971)
sc->mii_funcs = &lxtphy971_funcs;
else
sc->mii_funcs = &lxtphy_funcs;
sc->mii_pdata = mii;
sc->mii_flags = ma->mii_flags;
sc->mii_anegticks = 5;
PHY_RESET(sc);
sc->mii_capabilities =
PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
aprint_normal("%s: ", sc->mii_dev.dv_xname);
if (sc->mii_flags & MIIF_HAVEFIBER) {
#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, 0, sc->mii_inst),
MII_MEDIA_100_TX);
aprint_normal("100baseFX, ");
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, IFM_FDX, sc->mii_inst),
MII_MEDIA_100_TX_FDX);
aprint_normal("100baseFX-FDX, ");
#undef ADD
}
if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
aprint_error("no media present");
else
mii_phy_add_media(sc);
aprint_normal("\n");
}
static int
lxtphy_service(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;
if (IFM_SUBTYPE(ife->ifm_media) == IFM_100_FX)
lxtphy_set_fx(sc);
else
lxtphy_set_tp(sc);
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);
}
static void
lxtphy_status(struct mii_softc *sc)
{
struct mii_data *mii = sc->mii_pdata;
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
int bmcr, bmsr, csr;
mii->mii_media_status = IFM_AVALID;
mii->mii_media_active = IFM_ETHER;
/*
* Get link status from the CSR; we need to read the CSR
* for media type anyhow, and the link status in the CSR
* doens't latch, so fewer register reads are required.
*/
csr = PHY_READ(sc, MII_LXTPHY_CSR);
if (csr & CSR_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) {
bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
if ((bmsr & BMSR_ACOMP) == 0) {
/* Erg, still trying, I guess... */
mii->mii_media_active |= IFM_NONE;
return;
}
if (csr & CSR_SPEED)
mii->mii_media_active |= IFM_100_TX;
else
mii->mii_media_active |= IFM_10_T;
if (csr & CSR_DUPLEX)
mii->mii_media_active |= IFM_FDX;
} else
mii->mii_media_active = ife->ifm_media;
}
static void
lxtphy_reset(struct mii_softc *sc)
{
mii_phy_reset(sc);
PHY_WRITE(sc, MII_LXTPHY_IER,
PHY_READ(sc, MII_LXTPHY_IER) & ~IER_INTEN);
}
static void
lxtphy_set_tp(struct mii_softc *sc)
{
int cfg;
cfg = PHY_READ(sc, MII_LXTPHY_CONFIG);
cfg &= ~CONFIG_100BASEFX;
PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg);
}
static void
lxtphy_set_fx(struct mii_softc *sc)
{
int cfg;
cfg = PHY_READ(sc, MII_LXTPHY_CONFIG);
cfg |= CONFIG_100BASEFX;
PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg);
}