NetBSD/sys/dev/mii/tlphy.c

426 lines
12 KiB
C

/* $NetBSD: tlphy.c,v 1.24 2000/02/02 17:50:46 thorpej 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.
*/
/*
* Driver for Texas Instruments's ThunderLAN PHYs
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/socket.h>
#include <sys/errno.h>
#include <machine/bus.h>
#include <net/if.h>
#include <net/if_media.h>
#include <net/if_ether.h>
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
#include <dev/mii/miidevs.h>
#include <dev/i2c/i2c_bus.h>
#include <dev/mii/tlphyreg.h>
#include <dev/mii/tlphyvar.h>
/* ThunderLAN PHY can only be on a ThunderLAN */
#include <dev/pci/if_tlvar.h>
struct tlphy_softc {
struct mii_softc sc_mii; /* generic PHY */
int sc_tlphycap;
int sc_need_acomp;
};
int tlphymatch __P((struct device *, struct cfdata *, void *));
void tlphyattach __P((struct device *, struct device *, void *));
struct cfattach tlphy_ca = {
sizeof(struct tlphy_softc), tlphymatch, tlphyattach, mii_phy_detach,
mii_phy_activate
};
int tlphy_service __P((struct mii_softc *, struct mii_data *, int));
int tlphy_auto __P((struct tlphy_softc *, int));
void tlphy_acomp __P((struct tlphy_softc *));
void tlphy_status __P((struct mii_softc *));
int
tlphymatch(parent, match, aux)
struct device *parent;
struct cfdata *match;
void *aux;
{
struct mii_attach_args *ma = aux;
if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxTI &&
MII_MODEL(ma->mii_id2) == MII_MODEL_xxTI_TLAN10T)
return (10);
return (0);
}
void
tlphyattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct tlphy_softc *sc = (struct tlphy_softc *)self;
struct tl_softc *tlsc = (struct tl_softc *)self->dv_parent;
struct mii_attach_args *ma = aux;
struct mii_data *mii = ma->mii_data;
const char *sep = "";
printf(": %s, rev. %d\n", MII_STR_xxTI_TLAN10T,
MII_REV(ma->mii_id2));
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_status = tlphy_status;
sc->sc_mii.mii_pdata = mii;
sc->sc_mii.mii_flags = mii->mii_flags;
mii_phy_reset(&sc->sc_mii);
/*
* 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_tlphycap = tlsc->tl_product->tp_tlphymedia;
if ((sc->sc_tlphycap & TLPHY_MEDIA_NO_10_T) == 0)
sc->sc_mii.mii_capabilities =
PHY_READ(&sc->sc_mii, MII_BMSR) & ma->mii_capmask;
else
sc->sc_mii.mii_capabilities = 0;
#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
#define PRINT(s) printf("%s%s", sep, s); sep = ", "
printf("%s: ", sc->sc_mii.mii_dev.dv_xname);
if (sc->sc_tlphycap) {
if (sc->sc_tlphycap & TLPHY_MEDIA_10_2) {
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_2, 0,
sc->sc_mii.mii_inst), 0);
PRINT("10base2");
} else if (sc->sc_tlphycap & TLPHY_MEDIA_10_5) {
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_5, 0,
sc->sc_mii.mii_inst), 0);
PRINT("10base5");
}
}
if (sc->sc_mii.mii_capabilities & BMSR_MEDIAMASK) {
printf(sep);
mii_phy_add_media(&sc->sc_mii);
} else if ((sc->sc_tlphycap &
(TLPHY_MEDIA_10_2 | TLPHY_MEDIA_10_5)) == 0)
printf("no media present");
printf("\n");
#undef ADD
#undef PRINT
}
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_mii.mii_dev.dv_flags & DVF_ACTIVE) == 0)
return (ENXIO);
if ((sc->sc_mii.mii_flags & MIIF_DOINGAUTO) == 0 && 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, 1);
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);
mii_phy_setmedia(&sc->sc_mii);
}
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);
/*
* Only used for autonegotiation.
*/
if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
return (0);
/*
* Is the interface even up?
*/
if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
return (0);
/*
* 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)
return (0);
/*
* Only retry autonegotiation every 5 seconds.
*/
if (++sc->sc_mii.mii_ticks != 5)
return (0);
sc->sc_mii.mii_ticks = 0;
mii_phy_reset(&sc->sc_mii);
if (tlphy_auto(sc, 0) == EJUSTRETURN)
return (0);
break;
case MII_DOWN:
mii_phy_down(&sc->sc_mii);
return (0);
}
/* Update the media status. */
mii_phy_status(&sc->sc_mii);
/* Callback if something changed. */
if (sc->sc_mii.mii_active != mii->mii_media_active ||
cmd == MII_MEDIACHG) {
(*mii->mii_statchg)(sc->sc_mii.mii_dev.dv_parent);
sc->sc_mii.mii_active = mii->mii_media_active;
}
return (0);
}
void
tlphy_status(physc)
struct mii_softc *physc;
{
struct tlphy_softc *sc = (void *) physc;
struct mii_data *mii = sc->sc_mii.mii_pdata;
struct tl_softc *tlsc = (struct tl_softc *)sc->sc_mii.mii_dev.dv_parent;
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) {
if (sc->sc_tlphycap & TLPHY_MEDIA_10_2)
mii->mii_media_active |= IFM_10_2;
else if (sc->sc_tlphycap & TLPHY_MEDIA_10_5)
mii->mii_media_active |= IFM_10_5;
else
printf("%s: AUI selected with no matching media !\n",
sc->sc_mii.mii_dev.dv_xname);
if (tlsc->tl_flags & TL_IFACT)
mii->mii_media_status |= IFM_ACTIVE;
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;
}
int
tlphy_auto(sc, waitfor)
struct tlphy_softc *sc;
int waitfor;
{
int error;
switch ((error = mii_phy_auto(&sc->sc_mii, waitfor))) {
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);
}
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);
}