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/* $NetBSD: icsphy.c,v 1.41 2006/11/16 21:24:07 christos 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.
*
* 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.
*
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* driver for Integrated Circuit Systems' ICS1889-1893 ethernet 10/100 PHY
* datasheet from www.icst.com
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/socket.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 "miidevs.h"
#include <dev/mii/icsphyreg.h>
#include "miibus_if.h"
static int icsphy_probe(device_t dev);
static int icsphy_attach(device_t dev);
static device_method_t icsphy_methods[] = {
/* device interface */
DEVMETHOD(device_probe, icsphy_probe),
DEVMETHOD(device_attach, icsphy_attach),
DEVMETHOD(device_detach, mii_phy_detach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
DEVMETHOD_END
};
static devclass_t icsphy_devclass;
static driver_t icsphy_driver = {
"icsphy",
icsphy_methods,
sizeof(struct mii_softc)
};
DRIVER_MODULE(icsphy, miibus, icsphy_driver, icsphy_devclass, 0, 0);
static int icsphy_service(struct mii_softc *, struct mii_data *, int);
static void icsphy_status(struct mii_softc *);
static void icsphy_reset(struct mii_softc *);
static const struct mii_phydesc icsphys[] = {
MII_PHY_DESC(ICS, 1889),
MII_PHY_DESC(ICS, 1890),
MII_PHY_DESC(ICS, 1892),
MII_PHY_DESC(ICS, 1893),
MII_PHY_END
};
static const struct mii_phy_funcs icsphy_funcs = {
icsphy_service,
icsphy_status,
icsphy_reset
};
static int
icsphy_probe(device_t dev)
{
return (mii_phy_dev_probe(dev, icsphys, BUS_PROBE_DEFAULT));
}
static int
icsphy_attach(device_t dev)
{
mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE,
&icsphy_funcs, 1);
return (0);
}
static int
icsphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
{
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;
mii_phy_setmedia(sc);
break;
case MII_TICK:
if (mii_phy_tick(sc) == EJUSTRETURN)
return (0);
break;
}
/* Update the media status. */
PHY_STATUS(sc);
/* Callback if something changed. */
mii_phy_update(sc, cmd);
return (0);
}
static void
icsphy_status(struct mii_softc *sc)
{
struct mii_data *mii = sc->mii_pdata;
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
int bmcr, qpr;
mii->mii_media_status = IFM_AVALID;
mii->mii_media_active = IFM_ETHER;
/*
* Don't get link from the BMSR. It's available in the QPR,
* and we have to read it twice to unlatch it anyhow. This
* gives us fewer register reads.
*/
qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* unlatch */
qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* real value */
if (qpr & QPR_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) {
if ((qpr & QPR_ACOMP) == 0) {
/* Erg, still trying, I guess... */
mii->mii_media_active |= IFM_NONE;
return;
}
if (qpr & QPR_SPEED)
mii->mii_media_active |= IFM_100_TX;
else
mii->mii_media_active |= IFM_10_T;
if (qpr & QPR_FDX)
mii->mii_media_active |=
IFM_FDX | mii_phy_flowstatus(sc);
else
mii->mii_media_active |= IFM_HDX;
} else
mii->mii_media_active = ife->ifm_media;
}
static void
icsphy_reset(struct mii_softc *sc)
{
mii_phy_reset(sc);
/* set powerdown feature */
switch (sc->mii_mpd_model) {
case MII_MODEL_ICS_1890:
case MII_MODEL_ICS_1893:
PHY_WRITE(sc, MII_ICSPHY_ECR2, ECR2_100AUTOPWRDN);
break;
case MII_MODEL_ICS_1892:
PHY_WRITE(sc, MII_ICSPHY_ECR2,
ECR2_10AUTOPWRDN|ECR2_100AUTOPWRDN);
break;
default:
/* 1889 have no ECR2 */
break;
}
/*
* There is no description that the reset do auto-negotiation in the
* data sheet.
*/
PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_STARTNEG|BMCR_FDX);
}
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