freebsd-dev/sys/dev/mii/tlphy.c

437 lines
12 KiB
C

/* $NetBSD: tlphy.c,v 1.18 1999/05/14 11:40:28 drochner Exp $ */
/*-
* Copyright (c) 1998, 1999 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 the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Manuel Bouyer.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* 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 Texas Instruments's ThunderLAN PHYs
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <sys/errno.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/malloc.h>
#include <machine/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/tlphyreg.h>
#include "miibus_if.h"
struct tlphy_softc {
struct mii_softc sc_mii; /* generic PHY */
int sc_need_acomp;
};
static int tlphy_probe(device_t);
static int tlphy_attach(device_t);
static device_method_t tlphy_methods[] = {
/* device interface */
DEVMETHOD(device_probe, tlphy_probe),
DEVMETHOD(device_attach, tlphy_attach),
DEVMETHOD(device_detach, mii_phy_detach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
{ 0, 0 }
};
static devclass_t tlphy_devclass;
static driver_t tlphy_driver = {
"tlphy",
tlphy_methods,
sizeof(struct tlphy_softc)
};
DRIVER_MODULE(tlphy, miibus, tlphy_driver, tlphy_devclass, 0, 0);
static int tlphy_service(struct mii_softc *, struct mii_data *, int);
static int tlphy_auto(struct tlphy_softc *);
static void tlphy_acomp(struct tlphy_softc *);
static void tlphy_status(struct tlphy_softc *);
static int
tlphy_probe(dev)
device_t dev;
{
struct mii_attach_args *ma;
ma = device_get_ivars(dev);
if (MII_OUI(ma->mii_id1, ma->mii_id2) != MII_OUI_xxTI ||
MII_MODEL(ma->mii_id2) != MII_MODEL_xxTI_TLAN10T)
return (ENXIO);
device_set_desc(dev, MII_STR_xxTI_TLAN10T);
return (0);
}
static int
tlphy_attach(dev)
device_t dev;
{
struct tlphy_softc *sc;
struct mii_attach_args *ma;
struct mii_data *mii;
const char *sep = "";
int capmask = 0xFFFFFFFF;
sc = device_get_softc(dev);
ma = device_get_ivars(dev);
sc->sc_mii.mii_dev = device_get_parent(dev);
mii = device_get_softc(sc->sc_mii.mii_dev);
LIST_INSERT_HEAD(&mii->mii_phys, &sc->sc_mii, mii_list);
sc->sc_mii.mii_inst = mii->mii_instance;
sc->sc_mii.mii_phy = ma->mii_phyno;
sc->sc_mii.mii_service = tlphy_service;
sc->sc_mii.mii_pdata = mii;
if (mii->mii_instance) {
struct mii_softc *other;
device_t *devlist;
int devs, i;
device_get_children(sc->sc_mii.mii_dev, &devlist, &devs);
for (i = 0; i < devs; i++) {
if (strcmp(device_get_name(devlist[i]), "tlphy")) {
other = device_get_softc(devlist[i]);
capmask &= ~other->mii_capabilities;
break;
}
}
free(devlist, M_TEMP);
}
mii->mii_instance++;
sc->sc_mii.mii_flags &= ~MIIF_NOISOLATE;
mii_phy_reset(&sc->sc_mii);
sc->sc_mii.mii_flags |= MIIF_NOISOLATE;
/*
* Note that if we're on a device that also supports 100baseTX,
* we are not going to want to use the built-in 10baseT port,
* since there will be another PHY on the MII wired up to the
* UTP connector. The parent indicates this to us by specifying
* the TLPHY_MEDIA_NO_10_T bit.
*/
sc->sc_mii.mii_capabilities =
PHY_READ(&sc->sc_mii, MII_BMSR) & capmask /*ma->mii_capmask*/;
#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->sc_mii.mii_inst),
BMCR_ISO);
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_LOOP,
sc->sc_mii.mii_inst), BMCR_LOOP);
#define PRINT(s) printf("%s%s", sep, s); sep = ", "
device_printf(dev, " ");
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_2, 0, sc->sc_mii.mii_inst), 0);
PRINT("10base2/BNC");
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_5, 0, sc->sc_mii.mii_inst), 0);
PRINT("10base5/AUI");
if (sc->sc_mii.mii_capabilities & BMSR_MEDIAMASK) {
printf("%s", sep);
mii_add_media(&sc->sc_mii);
}
printf("\n");
#undef ADD
#undef PRINT
MIIBUS_MEDIAINIT(sc->sc_mii.mii_dev);
return(0);
}
static int
tlphy_service(self, mii, cmd)
struct mii_softc *self;
struct mii_data *mii;
int cmd;
{
struct tlphy_softc *sc = (struct tlphy_softc *)self;
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
int reg;
if (sc->sc_need_acomp)
tlphy_acomp(sc);
switch (cmd) {
case MII_POLLSTAT:
/*
* If we're not polling our PHY instance, just return.
*/
if (IFM_INST(ife->ifm_media) != sc->sc_mii.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->sc_mii.mii_inst) {
reg = PHY_READ(&sc->sc_mii, MII_BMCR);
PHY_WRITE(&sc->sc_mii, 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:
/*
* The ThunderLAN PHY doesn't self-configure after
* an autonegotiation cycle, so there's no such
* thing as "already in auto mode".
*/
(void) tlphy_auto(sc);
break;
case IFM_10_2:
case IFM_10_5:
PHY_WRITE(&sc->sc_mii, MII_BMCR, 0);
PHY_WRITE(&sc->sc_mii, MII_TLPHY_CTRL, CTRL_AUISEL);
DELAY(100000);
break;
default:
PHY_WRITE(&sc->sc_mii, MII_TLPHY_CTRL, 0);
DELAY(100000);
PHY_WRITE(&sc->sc_mii, MII_ANAR,
mii_anar(ife->ifm_media));
PHY_WRITE(&sc->sc_mii, MII_BMCR, ife->ifm_data);
}
break;
case MII_TICK:
/*
* If we're not currently selected, just return.
*/
if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst)
return (0);
/*
* Is the interface even up?
*/
if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
return (0);
/*
* 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 BMSR twice in case it's latched.
*
* XXX WHAT ABOUT CHECKING LINK ON THE BNC/AUI?!
*/
reg = PHY_READ(&sc->sc_mii, MII_BMSR) |
PHY_READ(&sc->sc_mii, MII_BMSR);
if (reg & BMSR_LINK)
break;
/*
* Only retry autonegotiation every 5 seconds.
*/
if (++sc->sc_mii.mii_ticks <= 5)
break;
sc->sc_mii.mii_ticks = 0;
mii_phy_reset(&sc->sc_mii);
tlphy_auto(sc);
return (0);
}
/* Update the media status. */
tlphy_status(sc);
/* Callback if something changed. */
mii_phy_update(&sc->sc_mii, cmd);
return (0);
}
static void
tlphy_status(sc)
struct tlphy_softc *sc;
{
struct mii_data *mii = sc->sc_mii.mii_pdata;
int bmsr, bmcr, tlctrl;
mii->mii_media_status = IFM_AVALID;
mii->mii_media_active = IFM_ETHER;
bmcr = PHY_READ(&sc->sc_mii, MII_BMCR);
if (bmcr & BMCR_ISO) {
mii->mii_media_active |= IFM_NONE;
mii->mii_media_status = 0;
return;
}
tlctrl = PHY_READ(&sc->sc_mii, MII_TLPHY_CTRL);
if (tlctrl & CTRL_AUISEL) {
mii->mii_media_status = 0;
mii->mii_media_active = mii->mii_media.ifm_cur->ifm_media;
return;
}
bmsr = PHY_READ(&sc->sc_mii, MII_BMSR) |
PHY_READ(&sc->sc_mii, MII_BMSR);
if (bmsr & BMSR_LINK)
mii->mii_media_status |= IFM_ACTIVE;
if (bmcr & BMCR_LOOP)
mii->mii_media_active |= IFM_LOOP;
/*
* Grr, braindead ThunderLAN PHY doesn't have any way to
* tell which media is actually active. (Note it also
* doesn't self-configure after autonegotiation.) We
* just have to report what's in the BMCR.
*/
if (bmcr & BMCR_FDX)
mii->mii_media_active |= IFM_FDX;
mii->mii_media_active |= IFM_10_T;
}
static int
tlphy_auto(sc)
struct tlphy_softc *sc;
{
int error;
switch ((error = mii_phy_auto(&sc->sc_mii))) {
case EIO:
/*
* Just assume we're not in full-duplex mode.
* XXX Check link and try AUI/BNC?
*/
PHY_WRITE(&sc->sc_mii, MII_BMCR, 0);
break;
case EJUSTRETURN:
/* Flag that we need to program when it completes. */
sc->sc_need_acomp = 1;
break;
default:
tlphy_acomp(sc);
}
return (error);
}
static void
tlphy_acomp(sc)
struct tlphy_softc *sc;
{
int aner, anlpar;
sc->sc_need_acomp = 0;
/*
* Grr, braindead ThunderLAN PHY doesn't self-configure
* after autonegotiation. We have to do it ourselves
* based on the link partner status.
*/
aner = PHY_READ(&sc->sc_mii, MII_ANER);
if (aner & ANER_LPAN) {
anlpar = PHY_READ(&sc->sc_mii, MII_ANLPAR) &
PHY_READ(&sc->sc_mii, MII_ANAR);
if (anlpar & ANAR_10_FD) {
PHY_WRITE(&sc->sc_mii, MII_BMCR, BMCR_FDX);
return;
}
}
PHY_WRITE(&sc->sc_mii, MII_BMCR, 0);
}