mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-24 11:29:10 +00:00
331 lines
8.4 KiB
C
331 lines
8.4 KiB
C
/*
|
|
* Copyright (c) 2000,2001 Jonathan Chen.
|
|
* 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,
|
|
* without modification, immediately at the beginning of the file.
|
|
* 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
/*
|
|
* Driver for the TDK 78Q2120 MII
|
|
*
|
|
* References:
|
|
* Datasheet for the 78Q2120 - http://www.tsc.tdk.com/lan/78q2120.pdf
|
|
* Most of this code stolen from ukphy.c
|
|
*/
|
|
|
|
/*
|
|
* The TDK 78Q2120 is found on some Xircom X3201 based cardbus cards. It's just
|
|
* like any other normal phy, except it does auto negotiation in a different
|
|
* way.
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/errno.h>
|
|
#include <sys/module.h>
|
|
#include <sys/bus.h>
|
|
|
|
#include <net/if.h>
|
|
#include <net/if_media.h>
|
|
|
|
#include <machine/clock.h>
|
|
|
|
#include <dev/mii/mii.h>
|
|
#include <dev/mii/miivar.h>
|
|
#include <dev/mii/miidevs.h>
|
|
|
|
#include <dev/mii/tdkphyreg.h>
|
|
|
|
#include "miibus_if.h"
|
|
|
|
#if !defined(lint)
|
|
static const char rcsid[] =
|
|
"$Id: tdkphy.c,v 1.3 2000/10/14 06:20:56 jon Exp $";
|
|
#endif
|
|
|
|
static int tdkphy_probe (device_t);
|
|
static int tdkphy_attach (device_t);
|
|
static int tdkphy_detach (device_t);
|
|
|
|
static device_method_t tdkphy_methods[] = {
|
|
/* device interface */
|
|
DEVMETHOD(device_probe, tdkphy_probe),
|
|
DEVMETHOD(device_attach, tdkphy_attach),
|
|
DEVMETHOD(device_detach, tdkphy_detach),
|
|
DEVMETHOD(device_shutdown, bus_generic_shutdown),
|
|
{ 0, 0 }
|
|
};
|
|
|
|
static devclass_t tdkphy_devclass;
|
|
|
|
static driver_t tdkphy_driver = {
|
|
"tdkphy",
|
|
tdkphy_methods,
|
|
sizeof(struct mii_softc)
|
|
};
|
|
|
|
DRIVER_MODULE(tdkphy, miibus, tdkphy_driver, tdkphy_devclass, 0, 0);
|
|
|
|
static int tdkphy_service(struct mii_softc *, struct mii_data *, int);
|
|
static void tdkphy_status(struct mii_softc *);
|
|
|
|
static int
|
|
tdkphy_probe(device_t dev)
|
|
{
|
|
struct mii_attach_args *ma;
|
|
ma = device_get_ivars(dev);
|
|
if ((MII_OUI(ma->mii_id1, ma->mii_id2) != MII_OUI_TDK ||
|
|
MII_MODEL(ma->mii_id2) != MII_MODEL_TDK_78Q2120))
|
|
return (ENXIO);
|
|
|
|
device_set_desc(dev, MII_STR_TDK_78Q2120);
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
tdkphy_attach(device_t dev)
|
|
{
|
|
struct mii_softc *sc;
|
|
struct mii_attach_args *ma;
|
|
struct mii_data *mii;
|
|
sc = device_get_softc(dev);
|
|
ma = device_get_ivars(dev);
|
|
sc->mii_dev = device_get_parent(dev);
|
|
mii = device_get_softc(sc->mii_dev);
|
|
LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
|
|
|
|
if (bootverbose)
|
|
device_printf(dev, "OUI 0x%06x, model 0x%04x, rev. %d\n",
|
|
MII_OUI(ma->mii_id1, ma->mii_id2),
|
|
MII_MODEL(ma->mii_id2), MII_REV(ma->mii_id2));
|
|
|
|
sc->mii_inst = mii->mii_instance;
|
|
sc->mii_phy = ma->mii_phyno;
|
|
sc->mii_service = tdkphy_service;
|
|
sc->mii_pdata = mii;
|
|
|
|
mii->mii_instance++;
|
|
|
|
sc->mii_flags |= MIIF_NOISOLATE;
|
|
|
|
#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
|
|
|
|
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
|
|
BMCR_ISO);
|
|
#if 0
|
|
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
|
|
BMCR_LOOP|BMCR_S100);
|
|
#endif
|
|
|
|
mii_phy_reset(sc);
|
|
|
|
sc->mii_capabilities =
|
|
PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
|
|
device_printf(dev, " ");
|
|
if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
|
|
printf("no media present");
|
|
else
|
|
mii_add_media(mii, sc->mii_capabilities,
|
|
sc->mii_inst);
|
|
printf("\n");
|
|
#undef ADD
|
|
|
|
MIIBUS_MEDIAINIT(sc->mii_dev);
|
|
|
|
return(0);
|
|
}
|
|
|
|
static int tdkphy_detach(device_t dev)
|
|
{
|
|
struct mii_softc *sc;
|
|
struct mii_data *mii;
|
|
|
|
sc = device_get_softc(dev);
|
|
mii = device_get_softc(device_get_parent(dev));
|
|
mii_phy_auto_stop(sc);
|
|
sc->mii_dev = NULL;
|
|
LIST_REMOVE(sc, mii_list);
|
|
|
|
return(0);
|
|
}
|
|
|
|
static int
|
|
tdkphy_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:
|
|
/*
|
|
* If we're not polling our PHY instance, just return.
|
|
*/
|
|
if (IFM_INST(ife->ifm_media) != sc->mii_inst)
|
|
return (0);
|
|
break;
|
|
|
|
case MII_MEDIACHG:
|
|
/*
|
|
* If the media indicates a different PHY instance,
|
|
* isolate ourselves.
|
|
*/
|
|
if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
|
|
reg = PHY_READ(sc, MII_BMCR);
|
|
PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* If the interface is not up, don't do anything.
|
|
*/
|
|
if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
|
|
break;
|
|
|
|
switch (IFM_SUBTYPE(ife->ifm_media)) {
|
|
case IFM_AUTO:
|
|
/*
|
|
* If we're already in auto mode, just return.
|
|
*/
|
|
if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN)
|
|
return (0);
|
|
(void) mii_phy_auto(sc, 1);
|
|
break;
|
|
case IFM_100_T4:
|
|
/*
|
|
* Not supported on MII
|
|
*/
|
|
return (EINVAL);
|
|
default:
|
|
/*
|
|
* BMCR data is stored in the ifmedia entry.
|
|
*/
|
|
PHY_WRITE(sc, MII_ANAR,
|
|
mii_anar(ife->ifm_media));
|
|
PHY_WRITE(sc, MII_BMCR, ife->ifm_data);
|
|
}
|
|
break;
|
|
|
|
case MII_TICK:
|
|
/*
|
|
* If we're not currently selected, just return.
|
|
*/
|
|
if (IFM_INST(ife->ifm_media) != sc->mii_inst)
|
|
return (0);
|
|
if (mii_phy_tick(sc) == EJUSTRETURN)
|
|
return (0);
|
|
break;
|
|
}
|
|
|
|
/* Update the media status. */
|
|
tdkphy_status(sc);
|
|
if (sc->mii_pdata->mii_media_active & IFM_FDX)
|
|
PHY_WRITE(sc, MII_BMCR, PHY_READ(sc, MII_BMCR) | BMCR_FDX);
|
|
else
|
|
PHY_WRITE(sc, MII_BMCR, PHY_READ(sc, MII_BMCR) & ~BMCR_FDX);
|
|
|
|
/* Callback if something changed. */
|
|
mii_phy_update(sc, cmd);
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
tdkphy_status(struct mii_softc *phy)
|
|
{
|
|
struct mii_data *mii = phy->mii_pdata;
|
|
int bmsr, bmcr, anlpar, diag;
|
|
|
|
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;
|
|
}
|
|
|
|
anlpar = PHY_READ(phy, MII_ANAR) & PHY_READ(phy, MII_ANLPAR);
|
|
/*
|
|
* ANLPAR doesn't get set on my card, but we check it anyway,
|
|
* since it is mentioned in the 78Q2120 specs.
|
|
*/
|
|
if (anlpar & ANLPAR_T4)
|
|
mii->mii_media_active |= IFM_100_T4;
|
|
else if (anlpar & ANLPAR_TX_FD)
|
|
mii->mii_media_active |= IFM_100_TX|IFM_FDX;
|
|
else if (anlpar & ANLPAR_TX)
|
|
mii->mii_media_active |= IFM_100_TX;
|
|
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;
|
|
else {
|
|
/*
|
|
* ANLPAR isn't set, which leaves two possibilities:
|
|
* 1) Auto negotiation failed
|
|
* 2) Auto negotiation completed, but the card forgot
|
|
* to set ANLPAR.
|
|
* So we check the MII_DIAG(18) register...
|
|
*/
|
|
diag = PHY_READ(phy, MII_DIAG);
|
|
if (diag & DIAG_NEGFAIL) /* assume 10baseT if no neg */
|
|
mii->mii_media_active |= IFM_10_T;
|
|
else {
|
|
if (diag & DIAG_DUPLEX)
|
|
mii->mii_media_active |= IFM_FDX;
|
|
if (diag & DIAG_RATE_100)
|
|
mii->mii_media_active |= IFM_100_TX;
|
|
else
|
|
mii->mii_media_active |= IFM_10_T;
|
|
}
|
|
}
|
|
} else {
|
|
mii->mii_media_active = mii_media_from_bmcr(bmcr);
|
|
}
|
|
}
|