From 47a178e9f64b215ae24fad70253fb02ca6be0421 Mon Sep 17 00:00:00 2001 From: Jason Wright Date: Mon, 28 Aug 2000 13:40:24 +0000 Subject: driver for the XAQTI XMACII phy from FreeBSD --- sys/dev/mii/xmphy.c | 338 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 338 insertions(+) create mode 100644 sys/dev/mii/xmphy.c (limited to 'sys/dev/mii/xmphy.c') diff --git a/sys/dev/mii/xmphy.c b/sys/dev/mii/xmphy.c new file mode 100644 index 00000000000..264dd48956c --- /dev/null +++ b/sys/dev/mii/xmphy.c @@ -0,0 +1,338 @@ +/* $OpenBSD: xmphy.c,v 1.1 2000/08/28 13:40:23 jason Exp $ */ + +/* + * Copyright (c) 2000 + * Bill Paul . 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/xmphy.c,v 1.1 2000/04/22 01:58:18 wpaul Exp $ + */ + +/* + * driver for the XaQti XMAC II's internal PHY. This is sort of + * like a 10/100 PHY, except the only thing we're really autoselecting + * here is full/half duplex. Speed is always 1000mbps. + */ + +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include +#include +#include + +#include + +int xmphy_probe __P((struct device *, void *, void *)); +void xmphy_attach __P((struct device *, struct device *, void *)); + +struct cfattach xmphy_ca = { + sizeof(struct mii_softc), xmphy_probe, xmphy_attach, mii_phy_detach, + mii_phy_activate +}; + +struct cfdriver xmphy_cd = { + NULL, "xmphy", DV_DULL +}; + +int xmphy_service __P((struct mii_softc *, struct mii_data *, int)); +void xmphy_status __P((struct mii_softc *)); + +int xmphy_mii_phy_auto __P((struct mii_softc *, int)); +extern void mii_phy_auto_timeout __P((void *)); + +int xmphy_probe(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_xxXAQTI && + MII_MODEL(ma->mii_id2) == MII_MODEL_XAQTI_XMACII) + return(10); + + return(0); +} + +void +xmphy_attach(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_XAQTI_XMACII, MII_REV(ma->mii_id2)); + + sc->mii_inst = mii->mii_instance; + sc->mii_phy = ma->mii_phyno; + sc->mii_service = xmphy_service; + sc->mii_status = xmphy_status; + sc->mii_pdata = mii; + sc->mii_flags |= MIIF_NOISOLATE; + +#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) + + ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), + BMCR_ISO); + + mii_phy_reset(sc); + + ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0, sc->mii_inst), + XMPHY_BMCR_FDX); + ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX, sc->mii_inst), 0); + ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0); + +#undef ADD +} + +int +xmphy_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, XMPHY_MII_BMCR) & XMPHY_BMCR_AUTOEN) + return (0); + (void) xmphy_mii_phy_auto(sc, 1); + break; + case IFM_1000_SX: + mii_phy_reset(sc); + if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) { + PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_FDX); + PHY_WRITE(sc, XMPHY_MII_BMCR, XMPHY_BMCR_FDX); + } else { + PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_HDX); + PHY_WRITE(sc, XMPHY_MII_BMCR, 0); + } + break; + case IFM_100_T4: + case IFM_100_TX: + case IFM_10_T: + default: + return (EINVAL); + } + 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); + + /* + * Only retry autonegotiation every 5 seconds. + */ + if (++sc->mii_ticks != 5) + return (0); + + sc->mii_ticks = 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, XMPHY_MII_BMSR) | + PHY_READ(sc, XMPHY_MII_BMSR); + if (reg & XMPHY_BMSR_LINK) + break; + + mii_phy_reset(sc); + if (xmphy_mii_phy_auto(sc, 0) == EJUSTRETURN) + return(0); + break; + } + + /* Update the media status. */ + xmphy_status(sc); + + /* Callback if something changed. */ + mii_phy_update(sc, cmd); + return (0); +} + +void +xmphy_status(sc) + struct mii_softc *sc; +{ + struct mii_data *mii = sc->mii_pdata; + int bmsr, bmcr, anlpar; + + mii->mii_media_status = IFM_AVALID; + mii->mii_media_active = IFM_ETHER; + + bmsr = PHY_READ(sc, XMPHY_MII_BMSR) | + PHY_READ(sc, XMPHY_MII_BMSR); + if (bmsr & XMPHY_BMSR_LINK) + mii->mii_media_status |= IFM_ACTIVE; + + /* Do dummy read of extended status register. */ + bmcr = PHY_READ(sc, XMPHY_MII_EXTSTS); + + bmcr = PHY_READ(sc, XMPHY_MII_BMCR); + + if (bmcr & XMPHY_BMCR_LOOP) + mii->mii_media_active |= IFM_LOOP; + + + if (bmcr & XMPHY_BMCR_AUTOEN) { + if ((bmsr & XMPHY_BMSR_ACOMP) == 0) { + if (bmsr & XMPHY_BMSR_LINK) { + mii->mii_media_active |= IFM_1000_SX|IFM_HDX; + return; + } + /* Erg, still trying, I guess... */ + mii->mii_media_active |= IFM_NONE; + return; + } + + mii->mii_media_active |= IFM_1000_SX; + anlpar = PHY_READ(sc, XMPHY_MII_ANAR) & + PHY_READ(sc, XMPHY_MII_ANLPAR); + if (anlpar & XMPHY_ANLPAR_FDX) + mii->mii_media_active |= IFM_FDX; + else + mii->mii_media_active |= IFM_HDX; + return; + } + + mii->mii_media_active |= IFM_1000_SX; + if (bmcr & XMPHY_BMCR_FDX) + mii->mii_media_active |= IFM_FDX; + else + mii->mii_media_active |= IFM_HDX; + + return; +} + + +int +xmphy_mii_phy_auto(mii, waitfor) + struct mii_softc *mii; + int waitfor; +{ + int bmsr, i; + + if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { + PHY_WRITE(mii, XMPHY_MII_ANAR, + XMPHY_ANAR_FDX|XMPHY_ANAR_HDX); + PHY_WRITE(mii, XMPHY_MII_BMCR, + XMPHY_BMCR_AUTOEN | XMPHY_BMCR_STARTNEG); + } + + if (waitfor) { + /* Wait 500ms for it to complete. */ + for (i = 0; i < 500; i++) { + if ((bmsr = PHY_READ(mii, XMPHY_MII_BMSR)) & + XMPHY_BMSR_ACOMP) + return (0); + DELAY(1000); +#if 0 + if ((bmsr & BMSR_ACOMP) == 0) + printf("%s: autonegotiation failed to complete\n", + mii->mii_dev.dv_xname); +#endif + } + + /* + * Don't need to worry about clearing MIIF_DOINGAUTO. + * If that's set, a timeout is pending, and it will + * clear the flag. + */ + return (EIO); + } + + /* + * Just let it finish asynchronously. This is for the benefit of + * the tick handler driving autonegotiation. Don't want 500ms + * delays all the time while the system is running! + */ + if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { + mii->mii_flags |= MIIF_DOINGAUTO; + timeout(mii_phy_auto_timeout, mii, hz >> 1); + } + return (EJUSTRETURN); +} -- cgit v1.2.3