diff options
Diffstat (limited to 'sys/dev/mii/tqphy.c')
| -rw-r--r-- | sys/dev/mii/tqphy.c | 305 |
1 files changed, 305 insertions, 0 deletions
diff --git a/sys/dev/mii/tqphy.c b/sys/dev/mii/tqphy.c new file mode 100644 index 00000000000..d57ef39842b --- /dev/null +++ b/sys/dev/mii/tqphy.c @@ -0,0 +1,305 @@ +/* $OpenBSD: tqphy.c,v 1.1 1999/12/07 22:01:33 jason Exp $ */ +/* $NetBSD: tqphy.c,v 1.4 1999/11/12 18:13:01 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. + */ + +/* + * TDK TSC78Q2120 PHY driver + * + * Documentation available at http://www.tsc.tdk.com/lan/78Q2120.pdf . + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/kernel.h> +#include <sys/device.h> +#include <sys/malloc.h> +#include <sys/socket.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/tqphyreg.h> + +int tqphymatch __P((struct device *, void *, void *)); +void tqphyattach __P((struct device *, struct device *, void *)); + +struct cfattach tqphy_ca = { + sizeof(struct mii_softc), tqphymatch, tqphyattach +}; + +struct cfdriver tqphy_cd = { + NULL, "tqphy", DV_DULL +}; + +int tqphy_service __P((struct mii_softc *, struct mii_data *, int)); +void tqphy_status __P((struct mii_softc *)); + +int +tqphymatch(parent, match, aux) + struct device *parent; + void *match; + void *aux; +{ + struct mii_attach_args *ma = aux; + + if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_TSC) + switch MII_MODEL(ma->mii_id2) { + case MII_MODEL_TSC_78Q2120: + /* case MII_MODEL_TSC_78Q2121: */ + return (10); + } + + return (0); +} + +void +tqphyattach(parent, self, aux) + struct device *parent, *self; + void *aux; +{ + struct mii_softc *sc = (struct mii_softc *)self; + struct mii_attach_args *ma = aux; + struct mii_data *mii = ma->mii_data; + + printf(": %s, rev. %d\n", MII_STR_TSC_78Q2120, + MII_REV(ma->mii_id2)); + + sc->mii_inst = mii->mii_instance; + sc->mii_phy = ma->mii_phyno; + sc->mii_service = tqphy_service; + sc->mii_pdata = mii; + + /* + * Apparently, we can't do loopback on this PHY. + */ + sc->mii_flags |= MIIF_NOLOOP; + + mii_phy_reset(sc); + + sc->mii_capabilities = + PHY_READ(sc, MII_BMSR) & ma->mii_capmask; + printf("%s: ", sc->mii_dev.dv_xname); + if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) + printf("no media present"); + else + mii_add_media(sc); + printf("\n"); +} + +int +tqphy_service(sc, mii, cmd) + 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; + default: + 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); + + /* + * 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. + */ + reg = PHY_READ(sc, MII_BMSR) | + PHY_READ(sc, MII_BMSR); + if (reg & BMSR_LINK) + return (0); + + /* + * Only retry autonegotiation every 5 seconds. + */ + if (++sc->mii_ticks != 5) + return (0); + + sc->mii_ticks = 0; + mii_phy_reset(sc); + if (mii_phy_auto(sc, 0) == EJUSTRETURN) + return (0); + break; + + case MII_DOWN: + mii_phy_down(sc); + return (0); + } + + /* Update the media status. */ + tqphy_status(sc); + + /* Callback if something changed. */ + if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { + (*mii->mii_statchg)(sc->mii_dev.dv_parent); + sc->mii_active = mii->mii_media_active; + } + return (0); +} + +void +tqphy_status(sc) + struct mii_softc *sc; +{ + struct mii_data *mii = sc->mii_pdata; + struct ifmedia_entry *ife = mii->mii_media.ifm_cur; + int bmsr, bmcr, diag; + + mii->mii_media_status = IFM_AVALID; + mii->mii_media_active = IFM_ETHER; + + bmsr = PHY_READ(sc, MII_BMSR) | + PHY_READ(sc, MII_BMSR); + if (bmsr & BMSR_LINK) + mii->mii_media_status |= IFM_ACTIVE; + + bmcr = PHY_READ(sc, 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) { + if ((bmsr & BMSR_ACOMP) == 0) { + /* Erg, still trying, I guess... */ + mii->mii_media_active |= IFM_NONE; + return; + } + diag = PHY_READ(sc, MII_TQPHY_DIAG); + if (diag & DIAG_RATE) + mii->mii_media_active |= IFM_100_TX; + else + mii->mii_media_active |= IFM_10_T; + if (diag & DIAG_DPLX) + mii->mii_media_active |= IFM_FDX; + } else + mii->mii_media_active = ife->ifm_media; +} |