NetBSD-5.0.2/sys/dev/mii/tlphy.c
/* $NetBSD: tlphy.c,v 1.57 2008/05/06 11:35:38 tsutsui Exp $ */
/*-
* Copyright (c) 1998, 1999, 2000 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.
*
* 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/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: tlphy.c,v 1.57 2008/05/06 11:35:38 tsutsui Exp $");
#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 <sys/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/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;
};
static int tlphymatch(device_t, cfdata_t, void *);
static void tlphyattach(device_t, device_t, void *);
CFATTACH_DECL_NEW(tlphy, sizeof(struct tlphy_softc),
tlphymatch, tlphyattach, mii_phy_detach, mii_phy_activate);
static int tlphy_service(struct mii_softc *, struct mii_data *, int);
static int tlphy_auto(struct tlphy_softc *, int);
static void tlphy_acomp(struct tlphy_softc *);
static void tlphy_status(struct mii_softc *);
static const struct mii_phy_funcs tlphy_funcs = {
tlphy_service, tlphy_status, mii_phy_reset,
};
static const struct mii_phydesc tlphys[] = {
{ MII_OUI_TI, MII_MODEL_TI_TLAN10T,
MII_STR_TI_TLAN10T },
{ 0, 0,
NULL },
};
static int
tlphymatch(device_t parent, cfdata_t match, void *aux)
{
struct mii_attach_args *ma = aux;
if (mii_phy_match(ma, tlphys) != NULL)
return (10);
return (0);
}
static void
tlphyattach(device_t parent, device_t self, void *aux)
{
struct tlphy_softc *tsc = device_private(self);
struct mii_softc *sc = &tsc->sc_mii;
struct tl_softc *tlsc = device_private(device_parent(self));
struct mii_attach_args *ma = aux;
struct mii_data *mii = ma->mii_data;
const struct mii_phydesc *mpd;
const char *sep = "";
mpd = mii_phy_match(ma, tlphys);
aprint_naive(": Media interface\n");
aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
sc->mii_dev = self;
sc->mii_inst = mii->mii_instance;
sc->mii_phy = ma->mii_phyno;
sc->mii_funcs = &tlphy_funcs;
sc->mii_pdata = mii;
sc->mii_flags = ma->mii_flags;
sc->mii_anegticks = MII_ANEGTICKS;
PHY_RESET(sc);
/*
* 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.
*/
tsc->sc_tlphycap = tlsc->tl_product->tp_tlphymedia;
if ((tsc->sc_tlphycap & TLPHY_MEDIA_NO_10_T) == 0)
sc->mii_capabilities =
PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
else
sc->mii_capabilities = 0;
#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
#define PRINT(str) aprint_normal("%s%s", sep, str); sep = ", "
aprint_normal_dev(self, "");
if (tsc->sc_tlphycap) {
if (tsc->sc_tlphycap & TLPHY_MEDIA_10_2) {
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_2, 0,
sc->mii_inst), 0);
PRINT("10base2");
} else if (tsc->sc_tlphycap & TLPHY_MEDIA_10_5) {
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_5, 0,
sc->mii_inst), 0);
PRINT("10base5");
}
}
if (sc->mii_capabilities & BMSR_MEDIAMASK) {
aprint_normal("%s", sep);
mii_phy_add_media(sc);
} else if ((tsc->sc_tlphycap &
(TLPHY_MEDIA_10_2 | TLPHY_MEDIA_10_5)) == 0)
aprint_error("no media present");
aprint_normal("\n");
#undef ADD
#undef PRINT
if (!pmf_device_register(self, NULL, mii_phy_resume))
aprint_error_dev(self, "couldn't establish power handler\n");
}
static int
tlphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
{
struct tlphy_softc *tsc = (struct tlphy_softc *)sc;
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
int reg;
if ((sc->mii_flags & MIIF_DOINGAUTO) == 0 && tsc->sc_need_acomp)
tlphy_acomp(tsc);
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:
/*
* 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(tsc, 1);
break;
case IFM_10_2:
case IFM_10_5:
PHY_WRITE(sc, MII_BMCR, 0);
PHY_WRITE(sc, MII_TLPHY_CTRL, CTRL_AUISEL);
delay(100000);
break;
default:
PHY_WRITE(sc, MII_TLPHY_CTRL, 0);
delay(100000);
mii_phy_setmedia(sc);
}
break;
case MII_TICK:
/*
* If we're not currently selected, just return.
*/
if (IFM_INST(ife->ifm_media) != sc->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);
/*
* XXX WHAT ABOUT CHECKING LINK ON THE BNC/AUI?!
*/
if (mii_phy_tick(sc) == EJUSTRETURN)
return (0);
break;
case MII_DOWN:
mii_phy_down(sc);
return (0);
}
/* Update the media status. */
mii_phy_status(sc);
/* Callback if something changed. */
mii_phy_update(sc, cmd);
return (0);
}
static void
tlphy_status(struct mii_softc *sc)
{
struct tlphy_softc *tsc = (struct tlphy_softc *)sc;
struct mii_data *mii = sc->mii_pdata;
int bmsr, bmcr, tlctrl;
mii->mii_media_status = IFM_AVALID;
mii->mii_media_active = IFM_ETHER;
bmcr = PHY_READ(sc, MII_BMCR);
if (bmcr & BMCR_ISO) {
mii->mii_media_active |= IFM_NONE;
mii->mii_media_status = 0;
return;
}
tlctrl = PHY_READ(sc, MII_TLPHY_CTRL);
if (tlctrl & CTRL_AUISEL) {
if (tsc->sc_tlphycap & TLPHY_MEDIA_10_2)
mii->mii_media_active |= IFM_10_2;
else if (tsc->sc_tlphycap & TLPHY_MEDIA_10_5)
mii->mii_media_active |= IFM_10_5;
else
printf("%s: AUI selected with no matching media !\n",
device_xname(sc->mii_dev));
mii->mii_media_status |= IFM_ACTIVE;
return;
}
bmsr = PHY_READ(sc, MII_BMSR) |
PHY_READ(sc, 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(struct tlphy_softc *tsc, int waitfor)
{
struct mii_softc *sc = &tsc->sc_mii;
int error;
switch ((error = mii_phy_auto(sc, waitfor))) {
case EIO:
/*
* Just assume we're not in full-duplex mode.
* XXX Check link and try AUI/BNC?
*/
PHY_WRITE(sc, MII_BMCR, 0);
break;
case EJUSTRETURN:
/* Flag that we need to program when it completes. */
tsc->sc_need_acomp = 1;
break;
default:
tlphy_acomp(tsc);
}
return (error);
}
static void
tlphy_acomp(struct tlphy_softc *tsc)
{
struct mii_softc *sc = &tsc->sc_mii;
int aner, anlpar;
tsc->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, MII_ANER);
if (aner & ANER_LPAN) {
anlpar = PHY_READ(sc, MII_ANLPAR) &
PHY_READ(sc, MII_ANAR);
if (anlpar & ANAR_10_FD) {
PHY_WRITE(sc, MII_BMCR, BMCR_FDX);
return;
}
}
PHY_WRITE(sc, MII_BMCR, 0);
}