/* $OpenBSD: xmphy.c,v 1.12 2005/03/26 04:40:09 krw 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 int xmphy_probe(struct device *, void *, void *); void xmphy_attach(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(struct mii_softc *, struct mii_data *, int); void xmphy_status(struct mii_softc *); int xmphy_mii_phy_auto(struct mii_softc *, int); const struct mii_phy_funcs xmphy_funcs = { xmphy_service, xmphy_status, mii_phy_reset, }; static const struct mii_phydesc xmphys[] = { { MII_OUI_xxXAQTI, MII_MODEL_XAQTI_XMACII, MII_STR_XAQTI_XMACII }, { 0, 0, NULL }, }; int xmphy_probe(struct device *parent, void *match, void *aux) { struct mii_attach_args *ma = aux; if (mii_phy_match(ma, xmphys) != NULL) return(10); return(0); } void xmphy_attach(struct device *parent, struct device *self, void *aux) { struct mii_softc *sc = (struct mii_softc *)self; struct mii_attach_args *ma = aux; struct mii_data *mii = ma->mii_data; const struct mii_phydesc *mpd; mpd = mii_phy_match(ma, xmphys); printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); sc->mii_inst = mii->mii_instance; sc->mii_phy = ma->mii_phyno; sc->mii_funcs = &xmphy_funcs; sc->mii_pdata = mii; sc->mii_flags = ma->mii_flags; sc->mii_anegticks = MII_ANEGTICKS; 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); 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(struct mii_softc *sc, struct mii_data *mii, int cmd) { struct ifmedia_entry *ife = mii->mii_media.ifm_cur; int reg; if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) return (ENXIO); 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: 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 mii_anegticks seconds. */ if (++sc->mii_ticks <= sc->mii_anegticks) 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; 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(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(struct mii_softc *sc, int waitfor) { int bmsr, i; if ((sc->mii_flags & MIIF_DOINGAUTO) == 0) { PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_FDX|XMPHY_ANAR_HDX); PHY_WRITE(sc, 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(sc, 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 ((sc->mii_flags & MIIF_DOINGAUTO) == 0) { sc->mii_flags |= MIIF_DOINGAUTO; timeout_set(&sc->mii_phy_timo, mii_phy_auto_timeout, sc); timeout_add(&sc->mii_phy_timo, hz >> 1); } return (EJUSTRETURN); }