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Diffstat (limited to 'sys/dev/mii/tlphy.c')
-rw-r--r-- | sys/dev/mii/tlphy.c | 457 |
1 files changed, 457 insertions, 0 deletions
diff --git a/sys/dev/mii/tlphy.c b/sys/dev/mii/tlphy.c new file mode 100644 index 0000000..494ed48 --- /dev/null +++ b/sys/dev/mii/tlphy.c @@ -0,0 +1,457 @@ +/* $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. + */ + +/* + * 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 <machine/bus.h> +#include <machine/clock.h> + +#include <net/if.h> +#include <net/if_media.h> + +#include <dev/mii/mii.h> +#include <dev/mii/miivar.h> +#include <dev/mii/miidevs.h> + +#include <dev/mii/tlphyreg.h> + +#include "miibus_if.h" + +#if !defined(lint) +static const char rcsid[] = + "$Id$"; +#endif + +struct tlphy_softc { + struct mii_softc sc_mii; /* generic PHY */ + int sc_need_acomp; +}; + +static int tlphy_probe __P((device_t)); +static int tlphy_attach __P((device_t)); +static int tlphy_detach __P((device_t)); + +static device_method_t tlphy_methods[] = { + /* device interface */ + DEVMETHOD(device_probe, tlphy_probe), + DEVMETHOD(device_attach, tlphy_attach), + DEVMETHOD(device_detach, tlphy_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); + +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 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; + } + } + } + + 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(sep); + mii_add_media(mii, sc->sc_mii.mii_capabilities, + sc->sc_mii.mii_inst); + } + + printf("\n"); +#undef ADD +#undef PRINT + MIIBUS_MEDIAINIT(sc->sc_mii.mii_dev); + return(0); +} + +static int tlphy_detach(dev) + device_t dev; +{ + struct tlphy_softc *sc; + struct mii_data *mii; + + sc = device_get_softc(dev); + mii = device_get_softc(device_get_parent(dev)); + sc->sc_mii.mii_dev = NULL; + LIST_REMOVE(&sc->sc_mii, mii_list); + + return(0); +} + +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_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); + 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); + + /* + * 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; + } + + /* Update the media status. */ + tlphy_status(sc); + + /* Callback if something changed. */ + if (sc->sc_mii.mii_active != mii->mii_media_active || + cmd == MII_MEDIACHG) { + MIIBUS_STATCHG(sc->sc_mii.mii_dev); + sc->sc_mii.mii_active = mii->mii_media_active; + } + return (0); +} + +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; +} + +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); +} |