/* $OpenBSD: ipgphy.c,v 1.2 2006/08/11 19:50:48 brad Exp $ */ /*- * Copyright (c) 2006, Pyun YongHyeon * 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 unmodified, 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. * */ /* * Driver for the IC Plus IP1000A 10/100/1000 PHY. */ #include #include #include #include #include #include #include #include #include #ifdef INET #include #include #endif #include #include #include #include #include int ipgphy_probe(struct device *, void *, void *); void ipgphy_attach(struct device *, struct device *, void *); struct cfattach ipgphy_ca = { sizeof(struct mii_softc), ipgphy_probe, ipgphy_attach, mii_phy_detach, mii_phy_activate }; struct cfdriver ipgphy_cd = { NULL, "ipgphy", DV_DULL }; int ipgphy_service(struct mii_softc *, struct mii_data *, int); void ipgphy_status(struct mii_softc *); int ipgphy_mii_phy_auto(struct mii_softc *); void ipgphy_load_dspcode(struct mii_softc *); void ipgphy_reset(struct mii_softc *); const struct mii_phy_funcs ipgphy_funcs = { ipgphy_service, ipgphy_status, ipgphy_reset, }; static const struct mii_phydesc ipgphys[] = { { MII_OUI_ICPLUS, MII_MODEL_ICPLUS_IP1000A, MII_STR_ICPLUS_IP1000A }, { 0, NULL }, }; int ipgphy_probe(struct device *parent, void *match, void *aux) { struct mii_attach_args *ma = aux; if (mii_phy_match(ma, ipgphys) != NULL) return (10); return (0); } void ipgphy_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, ipgphys); 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 = &ipgphy_funcs; sc->mii_pdata = mii; sc->mii_anegticks = MII_ANEGTICKS_GIGE; 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); ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, sc->mii_inst), IPGPHY_BMCR_10); ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_FDX, sc->mii_inst), IPGPHY_BMCR_10 | IPGPHY_BMCR_FDX); ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, 0, sc->mii_inst), IPGPHY_BMCR_100); ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_FDX, sc->mii_inst), IPGPHY_BMCR_100 | IPGPHY_BMCR_FDX); /* 1000baseT half-duplex, really supported? */ ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, 0, sc->mii_inst), IPGPHY_BMCR_1000); ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, IFM_FDX, sc->mii_inst), IPGPHY_BMCR_1000 | IPGPHY_BMCR_FDX); ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0); #undef ADD PHY_RESET(sc); } int ipgphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) { struct ifmedia_entry *ife = mii->mii_media.ifm_cur; uint32_t gig, reg, speed; 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, IPGPHY_MII_BMCR); PHY_WRITE(sc, IPGPHY_MII_BMCR, reg | IPGPHY_BMCR_ISO); return (0); } /* * If the interface is not up, don't do anything. */ if ((mii->mii_ifp->if_flags & IFF_UP) == 0) break; PHY_RESET(sc); switch (IFM_SUBTYPE(ife->ifm_media)) { case IFM_AUTO: (void)ipgphy_mii_phy_auto(sc); goto done; break; case IFM_1000_T: /* * XXX * Manual 1000baseT setting doesn't seem to work. */ speed = IPGPHY_BMCR_1000; break; case IFM_100_TX: speed = IPGPHY_BMCR_100; break; case IFM_10_T: speed = IPGPHY_BMCR_10; break; default: return (EINVAL); } if (((ife->ifm_media & IFM_GMASK) & IFM_FDX) != 0) { speed |= IPGPHY_BMCR_FDX; gig = IPGPHY_1000CR_1000T_FDX; } else gig = IPGPHY_1000CR_1000T; PHY_WRITE(sc, IPGPHY_MII_1000CR, 0); PHY_WRITE(sc, IPGPHY_MII_BMCR, speed); if (IFM_SUBTYPE(ife->ifm_media) != IFM_1000_T) break; PHY_WRITE(sc, IPGPHY_MII_1000CR, gig); PHY_WRITE(sc, IPGPHY_MII_BMCR, speed); /* * When setting the link manually, one side must * be the master and the other the slave. However * ifmedia doesn't give us a good way to specify * this, so we fake it by using one of the LINK * flags. If LINK0 is set, we program the PHY to * be a master, otherwise it's a slave. */ if ((mii->mii_ifp->if_flags & IFF_LINK0)) PHY_WRITE(sc, IPGPHY_MII_1000CR, gig | IPGPHY_1000CR_MASTER | IPGPHY_1000CR_MMASTER | IPGPHY_1000CR_MANUAL); else PHY_WRITE(sc, IPGPHY_MII_1000CR, gig | IPGPHY_1000CR_MASTER | IPGPHY_1000CR_MANUAL); done: break; case MII_TICK: /* * If we're not currently selected, just return. */ if (IFM_INST(ife->ifm_media) != sc->mii_inst) return (0); /* * Is the interface even up? */ if ((mii->mii_ifp->if_flags & IFF_UP) == 0) return (0); /* * Only used for autonegotiation. */ if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) { sc->mii_ticks = 0; break; } /* * check for link. */ reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); if (reg & BMSR_LINK) { sc->mii_ticks = 0; break; } /* Announce link loss right after it happens */ if (sc->mii_ticks++ == 0) break; /* * Only retry autonegotiation every mii_anegticks seconds. */ if (sc->mii_ticks <= sc->mii_anegticks) return (0); sc->mii_ticks = 0; ipgphy_mii_phy_auto(sc); break; } /* Update the media status. */ ipgphy_status(sc); /* Callback if something changed. */ mii_phy_update(sc, cmd); return (0); } void ipgphy_status(struct mii_softc *sc) { struct mii_data *mii = sc->mii_pdata; uint32_t bmsr, bmcr, stat; uint32_t ar, lpar; mii->mii_media_status = IFM_AVALID; mii->mii_media_active = IFM_ETHER; bmsr = PHY_READ(sc, IPGPHY_MII_BMSR) | PHY_READ(sc, IPGPHY_MII_BMSR); if ((bmsr & IPGPHY_BMSR_LINK) != 0) mii->mii_media_status |= IFM_ACTIVE; bmcr = PHY_READ(sc, IPGPHY_MII_BMCR); if ((bmcr & IPGPHY_BMCR_LOOP) != 0) mii->mii_media_active |= IFM_LOOP; if ((bmcr & IPGPHY_BMCR_AUTOEN) != 0) { if ((bmsr & IPGPHY_BMSR_ANEGCOMP) == 0) { /* Erg, still trying, I guess... */ mii->mii_media_active |= IFM_NONE; return; } } stat = PHY_READ(sc, STGE_PhyCtrl); switch (PC_LinkSpeed(stat)) { case PC_LinkSpeed_Down: mii->mii_media_active |= IFM_NONE; return; case PC_LinkSpeed_10: mii->mii_media_active |= IFM_10_T; break; case PC_LinkSpeed_100: mii->mii_media_active |= IFM_100_TX; break; case PC_LinkSpeed_1000: mii->mii_media_active |= IFM_1000_T; break; } if ((stat & PC_PhyDuplexStatus) != 0) mii->mii_media_active |= IFM_FDX; else mii->mii_media_active |= IFM_HDX; ar = PHY_READ(sc, IPGPHY_MII_ANAR); lpar = PHY_READ(sc, IPGPHY_MII_ANLPAR); /* * FLAG0 : Rx flow-control * FLAG1 : Tx flow-control */ if ((ar & IPGPHY_ANAR_PAUSE) && (lpar & IPGPHY_ANLPAR_PAUSE)) mii->mii_media_active |= IFM_FLAG0 | IFM_FLAG1; else if (!(ar & IPGPHY_ANAR_PAUSE) && (ar & IPGPHY_ANAR_APAUSE) && (lpar & IPGPHY_ANLPAR_PAUSE) && (lpar & IPGPHY_ANLPAR_APAUSE)) mii->mii_media_active |= IFM_FLAG1; else if ((ar & IPGPHY_ANAR_PAUSE) && (ar & IPGPHY_ANAR_APAUSE) && !(lpar & IPGPHY_ANLPAR_PAUSE) && (lpar & IPGPHY_ANLPAR_APAUSE)) { mii->mii_media_active |= IFM_FLAG0; } /* * FLAG2 : local PHY resolved to MASTER */ if ((mii->mii_media_active & IFM_1000_T) != 0) { stat = PHY_READ(sc, IPGPHY_MII_1000SR); if ((stat & IPGPHY_1000SR_MASTER) != 0) mii->mii_media_active |= IFM_FLAG2; } } int ipgphy_mii_phy_auto(struct mii_softc *mii) { uint32_t reg; PHY_WRITE(mii, IPGPHY_MII_ANAR, IPGPHY_ANAR_10T | IPGPHY_ANAR_10T_FDX | IPGPHY_ANAR_100TX | IPGPHY_ANAR_100TX_FDX | IPGPHY_ANAR_PAUSE | IPGPHY_ANAR_APAUSE); reg = IPGPHY_1000CR_1000T | IPGPHY_1000CR_1000T_FDX; reg |= IPGPHY_1000CR_MASTER; PHY_WRITE(mii, IPGPHY_MII_1000CR, reg); PHY_WRITE(mii, IPGPHY_MII_BMCR, (IPGPHY_BMCR_FDX | IPGPHY_BMCR_AUTOEN | IPGPHY_BMCR_STARTNEG)); return (EJUSTRETURN); } void ipgphy_load_dspcode(struct mii_softc *sc) { PHY_WRITE(sc, 31, 0x0001); PHY_WRITE(sc, 27, 0x01e0); PHY_WRITE(sc, 31, 0x0002); PHY_WRITE(sc, 27, 0xeb8e); PHY_WRITE(sc, 31, 0x0000); PHY_WRITE(sc, 30, 0x005e); PHY_WRITE(sc, 9, 0x0700); DELAY(50); } void ipgphy_reset(struct mii_softc *sc) { struct stge_softc *stge_sc; struct ifnet *ifp; uint32_t reg; mii_phy_reset(sc); /* clear autoneg/full-duplex as we don't want it after reset */ reg = PHY_READ(sc, IPGPHY_MII_BMCR); reg &= ~(IPGPHY_BMCR_AUTOEN | IPGPHY_BMCR_FDX); PHY_WRITE(sc, MII_BMCR, reg); ifp = sc->mii_pdata->mii_ifp; if (strcmp(ifp->if_xname, "stge") == 0) { stge_sc = ifp->if_softc; if (stge_sc->sc_rev >= 0x40 && stge_sc->sc_rev <= 0x4e) ipgphy_load_dspcode(sc); } }