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/*-
* Copyright (c) 1997, 1998, 1999
* Bill Paul <wpaul@ctr.columbia.edu>. 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 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 RealTek 8139 internal PHYs
*/
#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 <sys/taskqueue.h> /* XXXGL: if_rlreg.h contamination */
#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 "miidevs.h"
#include <machine/bus.h>
#include <pci/if_rlreg.h>
#include "miibus_if.h"
static int rlphy_probe(device_t);
static int rlphy_attach(device_t);
static device_method_t rlphy_methods[] = {
/* device interface */
DEVMETHOD(device_probe, rlphy_probe),
DEVMETHOD(device_attach, rlphy_attach),
DEVMETHOD(device_detach, mii_phy_detach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
DEVMETHOD_END
};
static devclass_t rlphy_devclass;
static driver_t rlphy_driver = {
"rlphy",
rlphy_methods,
sizeof(struct mii_softc)
};
DRIVER_MODULE(rlphy, miibus, rlphy_driver, rlphy_devclass, 0, 0);
static int rlphy_service(struct mii_softc *, struct mii_data *, int);
static void rlphy_status(struct mii_softc *);
/*
* RealTek internal PHYs don't have vendor/device ID registers;
* re(4) and rl(4) fake up a return value of all zeros.
*/
static const struct mii_phydesc rlintphys[] = {
{ 0, 0, "RealTek internal media interface" },
MII_PHY_END
};
static const struct mii_phydesc rlphys[] = {
MII_PHY_DESC(yyREALTEK, RTL8201L),
MII_PHY_DESC(REALTEK, RTL8201E),
MII_PHY_DESC(xxICPLUS, IP101),
MII_PHY_END
};
static const struct mii_phy_funcs rlphy_funcs = {
rlphy_service,
rlphy_status,
mii_phy_reset
};
static int
rlphy_probe(device_t dev)
{
const char *nic;
int rv;
rv = mii_phy_dev_probe(dev, rlphys, BUS_PROBE_DEFAULT);
if (rv <= 0)
return (rv);
nic = device_get_name(device_get_parent(device_get_parent(dev)));
if (strcmp(nic, "rl") == 0 || strcmp(nic, "re") == 0)
return (mii_phy_dev_probe(dev, rlintphys, BUS_PROBE_DEFAULT));
return (ENXIO);
}
static int
rlphy_attach(device_t dev)
{
/*
* The RealTek PHY can never be isolated.
*/
mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE,
&rlphy_funcs, 1);
return (0);
}
static int
rlphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
{
switch (cmd) {
case MII_POLLSTAT:
break;
case MII_MEDIACHG:
mii_phy_setmedia(sc);
break;
case MII_TICK:
/*
* The RealTek PHY's autonegotiation doesn't need to be
* kicked; it continues in the background.
*/
break;
}
/* Update the media status. */
PHY_STATUS(sc);
/* Callback if something changed. */
mii_phy_update(sc, cmd);
return (0);
}
static void
rlphy_status(struct mii_softc *phy)
{
struct mii_data *mii = phy->mii_pdata;
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
int bmsr, bmcr, anlpar;
mii->mii_media_status = IFM_AVALID;
mii->mii_media_active = IFM_ETHER;
bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR);
if (bmsr & BMSR_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;
}
if (bmcr & BMCR_LOOP)
mii->mii_media_active |= IFM_LOOP;
if (bmcr & BMCR_AUTOEN) {
/*
* NWay autonegotiation takes the highest-order common
* bit of the ANAR and ANLPAR (i.e. best media advertised
* both by us and our link partner).
*/
if ((bmsr & BMSR_ACOMP) == 0) {
/* Erg, still trying, I guess... */
mii->mii_media_active |= IFM_NONE;
return;
}
if ((anlpar = PHY_READ(phy, MII_ANAR) &
PHY_READ(phy, MII_ANLPAR))) {
if (anlpar & ANLPAR_TX_FD)
mii->mii_media_active |= IFM_100_TX|IFM_FDX;
else if (anlpar & ANLPAR_T4)
mii->mii_media_active |= IFM_100_T4|IFM_HDX;
else if (anlpar & ANLPAR_TX)
mii->mii_media_active |= IFM_100_TX|IFM_HDX;
else if (anlpar & ANLPAR_10_FD)
mii->mii_media_active |= IFM_10_T|IFM_FDX;
else if (anlpar & ANLPAR_10)
mii->mii_media_active |= IFM_10_T|IFM_HDX;
else
mii->mii_media_active |= IFM_NONE;
if ((mii->mii_media_active & IFM_FDX) != 0)
mii->mii_media_active |=
mii_phy_flowstatus(phy);
return;
}
/*
* If the other side doesn't support NWAY, then the
* best we can do is determine if we have a 10Mbps or
* 100Mbps link. There's no way to know if the link
* is full or half duplex, so we default to half duplex
* and hope that the user is clever enough to manually
* change the media settings if we're wrong.
*/
/*
* The RealTek PHY supports non-NWAY link speed
* detection, however it does not report the link
* detection results via the ANLPAR or BMSR registers.
* (What? RealTek doesn't do things the way everyone
* else does? I'm just shocked, shocked I tell you.)
* To determine the link speed, we have to do one
* of two things:
*
* - If this is a standalone RealTek RTL8201(L) or
* workalike PHY, we can determine the link speed by
* testing bit 0 in the magic, vendor-specific register
* at offset 0x19.
*
* - If this is a RealTek MAC with integrated PHY, we
* can test the 'SPEED10' bit of the MAC's media status
* register.
*/
if (!(phy->mii_mpd_model == 0 && phy->mii_mpd_rev == 0)) {
if (PHY_READ(phy, 0x0019) & 0x01)
mii->mii_media_active |= IFM_100_TX;
else
mii->mii_media_active |= IFM_10_T;
} else {
if (PHY_READ(phy, RL_MEDIASTAT) &
RL_MEDIASTAT_SPEED10)
mii->mii_media_active |= IFM_10_T;
else
mii->mii_media_active |= IFM_100_TX;
}
mii->mii_media_active |= IFM_HDX;
} else
mii->mii_media_active = ife->ifm_media;
}
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