267 lines
7.7 KiB
C
267 lines
7.7 KiB
C
/* $NetBSD: nsphyter.c,v 1.28 2008/01/20 07:58:19 msaitoh Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1998, 1999, 2000, 2001 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 National Semiconductor's DP83843 `PHYTER' ethernet 10/100 PHY
|
|
* Data Sheet available from www.national.com
|
|
*
|
|
* We also support the DP83815 `MacPHYTER' internal PHY since, for our
|
|
* purposes, they are compatible.
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/errno.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/module.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 "miidevs.h"
|
|
|
|
#include <dev/mii/nsphyterreg.h>
|
|
|
|
#include "miibus_if.h"
|
|
|
|
static device_probe_t nsphyter_probe;
|
|
static device_attach_t nsphyter_attach;
|
|
|
|
static device_method_t nsphyter_methods[] = {
|
|
/* device interface */
|
|
DEVMETHOD(device_probe, nsphyter_probe),
|
|
DEVMETHOD(device_attach, nsphyter_attach),
|
|
DEVMETHOD(device_detach, mii_phy_detach),
|
|
DEVMETHOD(device_shutdown, bus_generic_shutdown),
|
|
DEVMETHOD_END
|
|
};
|
|
|
|
static devclass_t nsphyter_devclass;
|
|
|
|
static driver_t nsphyter_driver = {
|
|
"nsphyter",
|
|
nsphyter_methods,
|
|
sizeof(struct mii_softc)
|
|
};
|
|
|
|
DRIVER_MODULE(nsphyter, miibus, nsphyter_driver, nsphyter_devclass, 0, 0);
|
|
|
|
static int nsphyter_service(struct mii_softc *, struct mii_data *, int);
|
|
static void nsphyter_status(struct mii_softc *);
|
|
static void nsphyter_reset(struct mii_softc *);
|
|
|
|
static const struct mii_phydesc nsphyters[] = {
|
|
MII_PHY_DESC(xxNATSEMI, DP83815),
|
|
MII_PHY_DESC(xxNATSEMI, DP83843),
|
|
MII_PHY_DESC(xxNATSEMI, DP83847),
|
|
MII_PHY_END
|
|
};
|
|
|
|
static const struct mii_phy_funcs nsphyter_funcs = {
|
|
nsphyter_service,
|
|
nsphyter_status,
|
|
nsphyter_reset
|
|
};
|
|
|
|
static int
|
|
nsphyter_probe(device_t dev)
|
|
{
|
|
|
|
return (mii_phy_dev_probe(dev, nsphyters, BUS_PROBE_DEFAULT));
|
|
}
|
|
|
|
static int
|
|
nsphyter_attach(device_t dev)
|
|
{
|
|
|
|
mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &nsphyter_funcs, 1);
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
nsphyter_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
|
|
nsphyter_status(struct mii_softc *sc)
|
|
{
|
|
struct mii_data *mii = sc->mii_pdata;
|
|
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
|
|
int bmsr, bmcr, physts;
|
|
|
|
mii->mii_media_status = IFM_AVALID;
|
|
mii->mii_media_active = IFM_ETHER;
|
|
|
|
bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
|
|
physts = PHY_READ(sc, MII_NSPHYTER_PHYSTS);
|
|
|
|
if ((physts & PHYSTS_LINK) != 0)
|
|
mii->mii_media_status |= IFM_ACTIVE;
|
|
|
|
bmcr = PHY_READ(sc, MII_BMCR);
|
|
if ((bmcr & BMCR_ISO) != 0) {
|
|
mii->mii_media_active |= IFM_NONE;
|
|
mii->mii_media_status = 0;
|
|
return;
|
|
}
|
|
|
|
if ((bmcr & BMCR_LOOP) != 0)
|
|
mii->mii_media_active |= IFM_LOOP;
|
|
|
|
if ((bmcr & BMCR_AUTOEN) != 0) {
|
|
/*
|
|
* The media status bits 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;
|
|
}
|
|
|
|
if ((physts & PHYSTS_SPEED10) != 0)
|
|
mii->mii_media_active |= IFM_10_T;
|
|
else
|
|
mii->mii_media_active |= IFM_100_TX;
|
|
if ((physts & PHYSTS_DUPLEX) != 0)
|
|
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
|
|
nsphyter_reset(struct mii_softc *sc)
|
|
{
|
|
struct ifmedia_entry *ife = sc->mii_pdata->mii_media.ifm_cur;
|
|
int reg, i;
|
|
|
|
if ((sc->mii_flags & MIIF_NOISOLATE) != 0)
|
|
reg = BMCR_RESET;
|
|
else
|
|
reg = BMCR_RESET | BMCR_ISO;
|
|
PHY_WRITE(sc, MII_BMCR, reg);
|
|
|
|
/*
|
|
* It is best to allow a little time for the reset to settle
|
|
* in before we start polling the BMCR again. Notably, the
|
|
* DP8384{3,7} manuals state that there should be a 500us delay
|
|
* between asserting software reset and attempting MII serial
|
|
* operations. Be conservative. Also, a DP83815 can get into
|
|
* a bad state on cable removal and reinsertion if we do not
|
|
* delay here.
|
|
*/
|
|
DELAY(1000);
|
|
|
|
/*
|
|
* Wait another 2s for it to complete.
|
|
* This is only a little overkill as under normal circumstances
|
|
* the PHY can take up to 1s to complete reset.
|
|
* This is also a bit odd because after a reset, the BMCR will
|
|
* clear the reset bit and simply reports 0 even though the reset
|
|
* is not yet complete.
|
|
*/
|
|
for (i = 0; i < 1000; i++) {
|
|
reg = PHY_READ(sc, MII_BMCR);
|
|
if (reg != 0 && (reg & BMCR_RESET) == 0)
|
|
break;
|
|
DELAY(2000);
|
|
}
|
|
|
|
if ((sc->mii_flags & MIIF_NOISOLATE) == 0) {
|
|
if ((ife == NULL && sc->mii_inst != 0) ||
|
|
(ife != NULL && IFM_INST(ife->ifm_media) != sc->mii_inst))
|
|
PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
|
|
}
|
|
}
|