diff options
Diffstat (limited to 'sys/dev/mii/amphy.c')
| -rw-r--r-- | sys/dev/mii/amphy.c | 249 |
1 files changed, 249 insertions, 0 deletions
diff --git a/sys/dev/mii/amphy.c b/sys/dev/mii/amphy.c new file mode 100644 index 00000000000..b986d83de8f --- /dev/null +++ b/sys/dev/mii/amphy.c @@ -0,0 +1,249 @@ +/* $OpenBSD: amphy.c,v 1.1 2000/10/17 15:59:09 jason Exp $ */ + +/* + * Copyright (c) 1997, 1998, 1999 + * Bill Paul <wpaul@ee.columbia.edu>. 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 Bill Paul. + * 4. Neither the name of the author nor the names of any co-contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY Bill Paul 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 Bill Paul OR THE VOICES IN HIS HEAD + * 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. + * + * $FreeBSD: src/sys/dev/mii/amphy.c,v 1.3 2000/04/19 14:57:29 phk Exp $ + */ + +/* + * driver for AMD AM79c873 PHYs + * This driver also works for the Davicom DM9101 PHY, which appears to + * be an AM79c873 workalike. + */ + +#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/amphyreg.h> + +int amphymatch __P((struct device *, void *, void *)); +void amphyattach __P((struct device *, struct device *, void *)); + +struct cfattach amphy_ca = { + sizeof(struct mii_softc), amphymatch, amphyattach, mii_phy_detach, + mii_phy_activate +}; + +struct cfdriver amphy_cd = { + NULL, "amphy", DV_DULL +}; + +int amphy_service __P((struct mii_softc *, struct mii_data *, int)); +void amphy_status __P((struct mii_softc *)); + +int +amphymatch(parent, match, aux) + struct device *parent; + void *match, *aux; +{ + struct mii_attach_args *ma = aux; + + if ((MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxAMD && + MII_MODEL(ma->mii_id2) == MII_MODEL_xxAMD_79C873) || + (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxDAVICOM || + MII_MODEL(ma->mii_id2) == MII_MODEL_xxDAVICOM_DM9101)) + return(10); + + return(0); +} + +void +amphyattach(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_xxAMD_79C873, + MII_REV(ma->mii_id2)); + + sc->mii_inst = mii->mii_instance; + sc->mii_phy = ma->mii_phyno; + sc->mii_service = amphy_service; + sc->mii_status = amphy_status; + sc->mii_pdata = mii; + sc->mii_flags = mii->mii_flags; + + sc->mii_flags |= MIIF_NOISOLATE; + + mii_phy_reset(sc); + + sc->mii_capabilities = + PHY_READ(sc, MII_BMSR) & ma->mii_capmask; + if (sc->mii_capabilities & BMSR_MEDIAMASK) + mii_phy_add_media(sc); +} + +int +amphy_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; + + 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); + + if (mii_phy_tick(sc) == EJUSTRETURN) + return (0); + break; + case MII_DOWN: + mii_phy_down(sc); + return (0); + } + + /* Update the media status. */ + amphy_status(sc); + + /* Callback if something changed. */ + mii_phy_update(sc, cmd); + return (0); +} + +void +amphy_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, par, anlpar; + + 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) { + /* + * The PAR status bits are only valid of autonegotiation + * has completed (or it's disabled). + */ + if ((bmsr & BMSR_ACOMP) == 0) { + /* Erg, still trying, I guess... */ + mii->mii_media_active |= IFM_NONE; + return; + } + + if (PHY_READ(sc, MII_ANER) & ANER_LPAN) { + anlpar = PHY_READ(sc, MII_ANAR) & + PHY_READ(sc, MII_ANLPAR); + if (anlpar & ANLPAR_T4) + mii->mii_media_active |= IFM_100_T4; + else if (anlpar & ANLPAR_TX_FD) + mii->mii_media_active |= IFM_100_TX|IFM_FDX; + else if (anlpar & ANLPAR_TX) + mii->mii_media_active |= IFM_100_TX; + else if (anlpar & ANLPAR_10_FD) + mii->mii_media_active |= IFM_10_T|IFM_FDX; + else if (anlpar & ANLPAR_10) + mii->mii_media_active |= IFM_10_T; + else + mii->mii_media_active |= IFM_NONE; + return; + } + + /* + * Link partner is not capable of autonegotiation. + */ + par = PHY_READ(sc, MII_AMPHY_DSCSR); + if (par & DSCSR_100FDX) + mii->mii_media_active |= IFM_100_TX|IFM_FDX; + else if (par & DSCSR_100HDX) + mii->mii_media_active |= IFM_100_TX; + else if (par & DSCSR_10FDX) + mii->mii_media_active |= IFM_10_T|IFM_HDX; + else if (par & DSCSR_10HDX) + mii->mii_media_active |= IFM_10_T; + } else + mii->mii_media_active = ife->ifm_media; +} |