/*-
* Copyright (c) 2001 Wind River Systems
* Copyright (c) 2001
* Bill Paul <wpaul@bsdi.com>. All rights reserved.
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Bill Paul.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY Bill Paul 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 Bill Paul OR THE VOICES IN HIS HEAD
* 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 the National Semiconductor DP83861, DP83865 and DP83891
* 10/100/1000 PHYs.
* Datasheet available at: http://www.national.com/ds/DP/DP83861.pdf
* and at: http://www.national.com/ds/DP/DP83865.pdf
*
* The DP83891 is the older NS GigE PHY which isn't being sold
* anymore. The DP83861 is its replacement, which is an 'enhanced'
* firmware driven component. The major difference between the
* two is that the DP83891 can't generate interrupts, while the
* 83861 can (probably it wasn't originally designed to do this, but
* it can now thanks to firmware updates). The DP83861 also allows
* access to its internal RAM via indirect register access. The
* DP83865 is an ultra low power version of the DP83861 and DP83891.
*/
#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/nsgphyreg.h>
#include "miibus_if.h"
static int nsgphy_probe(device_t);
static int nsgphy_attach(device_t);
static device_method_t nsgphy_methods[] = {
/* device interface */
DEVMETHOD(device_probe, nsgphy_probe),
DEVMETHOD(device_attach, nsgphy_attach),
DEVMETHOD(device_detach, mii_phy_detach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
DEVMETHOD_END
};
static devclass_t nsgphy_devclass;
static driver_t nsgphy_driver = {
"nsgphy",
nsgphy_methods,
sizeof(struct mii_softc)
};
DRIVER_MODULE(nsgphy, miibus, nsgphy_driver, nsgphy_devclass, 0, 0);
static int nsgphy_service(struct mii_softc *, struct mii_data *,int);
static void nsgphy_status(struct mii_softc *);
static const struct mii_phydesc nsgphys[] = {
MII_PHY_DESC(xxNATSEMI, DP83861),
MII_PHY_DESC(xxNATSEMI, DP83865),
MII_PHY_DESC(xxNATSEMI, DP83891),
MII_PHY_END
};
static const struct mii_phy_funcs nsgphy_funcs = {
nsgphy_service,
nsgphy_status,
mii_phy_reset
};
static int
nsgphy_probe(device_t dev)
{
return (mii_phy_dev_probe(dev, nsgphys, BUS_PROBE_DEFAULT));
}
static int
nsgphy_attach(device_t dev)
{
struct mii_softc *sc;
sc = device_get_softc(dev);
mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &nsgphy_funcs, 0);
PHY_RESET(sc);
/*
* NB: the PHY has the 10BASE-T BMSR bits hard-wired to 0,
* even though it supports 10BASE-T.
*/
sc->mii_capabilities = (PHY_READ(sc, MII_BMSR) |
BMSR_10TFDX | BMSR_10THDX) & sc->mii_capmask;
/*
* Note that as documented manual 1000BASE-T modes of DP83865 only
* work together with other National Semiconductor PHYs.
*/
if (sc->mii_capabilities & BMSR_EXTSTAT)
sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
mii_phy_add_media(sc);
printf("\n");
MIIBUS_MEDIAINIT(sc->mii_dev);
return (0);
}
static int
nsgphy_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
nsgphy_status(struct mii_softc *sc)
{
struct mii_data *mii = sc->mii_pdata;
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
int bmsr, bmcr, physup, gtsr;
mii->mii_media_status = IFM_AVALID;
mii->mii_media_active = IFM_ETHER;
bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
physup = PHY_READ(sc, NSGPHY_MII_PHYSUP);
if (physup & PHY_SUP_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 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;
}
switch (physup & (PHY_SUP_SPEED1 | PHY_SUP_SPEED0)) {
case PHY_SUP_SPEED1:
mii->mii_media_active |= IFM_1000_T;
gtsr = PHY_READ(sc, MII_100T2SR);
if (gtsr & GTSR_MS_RES)
mii->mii_media_active |= IFM_ETH_MASTER;
break;
case PHY_SUP_SPEED0:
mii->mii_media_active |= IFM_100_TX;
break;
case 0:
mii->mii_media_active |= IFM_10_T;
break;
default:
mii->mii_media_active |= IFM_NONE;
mii->mii_media_status = 0;
return;
}
if (physup & PHY_SUP_DUPLEX)
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;
}
