#include <machine/rtems-bsd-kernel-space.h>
/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2001-2003, Shunsuke Akiyama <akiyama@FreeBSD.org>.
* 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 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 AUTHOR 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.
*
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* driver for RealTek RTL8150 internal PHY
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/socket.h>
#include <sys/bus.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <net/if_media.h>
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
#include <rtems/bsd/local/miidevs.h>
#include <dev/usb/net/ruephyreg.h>
#include <rtems/bsd/local/miibus_if.h>
static int ruephy_probe(device_t);
static int ruephy_attach(device_t);
static device_method_t ruephy_methods[] = {
/* device interface */
DEVMETHOD(device_probe, ruephy_probe),
DEVMETHOD(device_attach, ruephy_attach),
DEVMETHOD(device_detach, mii_phy_detach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
DEVMETHOD_END
};
static devclass_t ruephy_devclass;
static driver_t ruephy_driver = {
.name = "ruephy",
.methods = ruephy_methods,
.size = sizeof(struct mii_softc)
};
DRIVER_MODULE(ruephy, miibus, ruephy_driver, ruephy_devclass, 0, 0);
static int ruephy_service(struct mii_softc *, struct mii_data *, int);
static void ruephy_reset(struct mii_softc *);
static void ruephy_status(struct mii_softc *);
/*
* The RealTek RTL8150 internal PHY doesn't have vendor/device ID
* registers; rue(4) fakes up a return value of all zeros.
*/
static const struct mii_phydesc ruephys[] = {
{ 0, 0, "RealTek RTL8150 internal media interface" },
MII_PHY_END
};
static const struct mii_phy_funcs ruephy_funcs = {
ruephy_service,
ruephy_status,
ruephy_reset
};
static int
ruephy_probe(device_t dev)
{
if (strcmp(device_get_name(device_get_parent(device_get_parent(dev))),
"rue") == 0)
return (mii_phy_dev_probe(dev, ruephys, BUS_PROBE_DEFAULT));
return (ENXIO);
}
static int
ruephy_attach(device_t dev)
{
mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE,
&ruephy_funcs, 1);
return (0);
}
static int
ruephy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
{
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
int reg;
switch (cmd) {
case MII_POLLSTAT:
break;
case MII_MEDIACHG:
mii_phy_setmedia(sc);
break;
case MII_TICK:
/*
* Only used for autonegotiation.
*/
if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
break;
/*
* Check to see if we have link. If we do, we don't
* need to restart the autonegotiation process. Read
* the MSR twice in case it's latched.
*/
reg = PHY_READ(sc, RUEPHY_MII_MSR) |
PHY_READ(sc, RUEPHY_MII_MSR);
if (reg & RUEPHY_MSR_LINK)
break;
/* Only retry autonegotiation every mii_anegticks seconds. */
if (sc->mii_ticks <= sc->mii_anegticks)
break;
sc->mii_ticks = 0;
PHY_RESET(sc);
if (mii_phy_auto(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
ruephy_reset(struct mii_softc *sc)
{
mii_phy_reset(sc);
/*
* XXX RealTek RTL8150 PHY doesn't set the BMCR properly after
* XXX reset, which breaks autonegotiation.
*/
PHY_WRITE(sc, MII_BMCR, (BMCR_S100 | BMCR_AUTOEN | BMCR_FDX));
}
static void
ruephy_status(struct mii_softc *phy)
{
struct mii_data *mii = phy->mii_pdata;
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
int bmsr, bmcr, msr;
mii->mii_media_status = IFM_AVALID;
mii->mii_media_active = IFM_ETHER;
msr = PHY_READ(phy, RUEPHY_MII_MSR) | PHY_READ(phy, RUEPHY_MII_MSR);
if (msr & RUEPHY_MSR_LINK)
mii->mii_media_status |= IFM_ACTIVE;
bmcr = PHY_READ(phy, MII_BMCR);
if (bmcr & BMCR_ISO) {
mii->mii_media_active |= IFM_NONE;
mii->mii_media_status = 0;
return;
}
bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR);
if (bmcr & BMCR_AUTOEN) {
if ((bmsr & BMSR_ACOMP) == 0) {
/* Erg, still trying, I guess... */
mii->mii_media_active |= IFM_NONE;
return;
}
if (msr & RUEPHY_MSR_SPEED100)
mii->mii_media_active |= IFM_100_TX;
else
mii->mii_media_active |= IFM_10_T;
if (msr & RUEPHY_MSR_DUPLEX)
mii->mii_media_active |=
IFM_FDX | mii_phy_flowstatus(phy);
else
mii->mii_media_active |= IFM_HDX;
} else
mii->mii_media_active = ife->ifm_media;
}
