/* $OpenBSD: nsgphy.c,v 1.12 2004/09/27 18:25:48 brad Exp $ */ /* * Copyright (c) 2001 Wind River Systems * Copyright (c) 2001 * 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. * */ /* * Driver for the National Semiconductor DP83891 and DP83861 * 10/100/1000 PHYs. * Datasheet available at: http://www.national.com/ds/DP/DP83861.pdf * * The DP83891 is the older NatSemi gigE PHY which isn't being sold * anymore. The DP83861 is its replacement, which is an 'enhanced' * firmware driven component. The major difference between the * two is that the 83891 can't generate interrupts, while the * 83861 can. (I think it wasn't originally designed to do this, but * it can now thanks to firmware updates.) The 83861 also allows * access to its internal RAM via indirect register access. */ #include #include #include #include #include #include #include #include #include #include #include int nsgphymatch(struct device*, void *, void *); void nsgphyattach(struct device *, struct device *, void *); struct cfattach nsgphy_ca = { sizeof(struct mii_softc), nsgphymatch, nsgphyattach, mii_phy_detach, mii_phy_activate }; struct cfdriver nsgphy_cd = { NULL, "nsgphy", DV_DULL }; int nsgphy_service(struct mii_softc *, struct mii_data *, int); void nsgphy_status(struct mii_softc *); static int nsgphy_mii_phy_auto(struct mii_softc *, int); extern void mii_phy_auto_timeout(void *); const struct mii_phy_funcs nsgphy_funcs = { nsgphy_service, nsgphy_status, mii_phy_reset, }; int nsgphymatch(struct device *parent, void *match, void *aux) { struct mii_attach_args *ma = aux; if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_NATSEMI && (MII_MODEL(ma->mii_id2) == MII_MODEL_NATSEMI_DP83891 || MII_MODEL(ma->mii_id2) == MII_MODEL_NATSEMI_DP83861)) return (10); return (0); } void nsgphyattach(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; switch(MII_MODEL(ma->mii_id2)) { case MII_MODEL_NATSEMI_DP83861: printf(": %s, rev. %d\n", MII_STR_NATSEMI_DP83861, MII_REV(ma->mii_id2)); break; case MII_MODEL_NATSEMI_DP83891: printf(": %s, rev. %d\n", MII_STR_NATSEMI_DP83891, MII_REV(ma->mii_id2)); break; } sc->mii_inst = mii->mii_instance; sc->mii_phy = ma->mii_phyno; sc->mii_funcs = &nsgphy_funcs; sc->mii_pdata = mii; sc->mii_flags = mii->mii_flags; sc->mii_anegticks = 10; PHY_RESET(sc); sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; if (sc->mii_capabilities & BMSR_EXTSTAT) sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); if ((sc->mii_capabilities & BMSR_MEDIAMASK) || (sc->mii_extcapabilities & EXTSR_MEDIAMASK)) mii_phy_add_media(sc); #if 0 strap = PHY_READ(sc, MII_GPHYTER_STRAP); printf("%s: strapped to %s mode", sc->mii_dev.dv_xname, (strap & STRAP_MS_VAL) ? "master" : "slave"); if (strap & STRAP_NC_MODE) printf(", pre-C5 BCM5400 compat enabled"); printf("\n"); #endif } int nsgphy_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: (void) nsgphy_mii_phy_auto(sc, 0); break; case IFM_1000_T: if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) { PHY_WRITE(sc, NSGPHY_MII_BMCR, NSGPHY_BMCR_FDX|NSGPHY_BMCR_SPD1); } else { PHY_WRITE(sc, NSGPHY_MII_BMCR, NSGPHY_BMCR_SPD1); } PHY_WRITE(sc, NSGPHY_MII_ANAR, NSGPHY_SEL_TYPE); /* * 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, NSGPHY_MII_1000CTL, NSGPHY_1000CTL_MSE|NSGPHY_1000CTL_MSC); } else { PHY_WRITE(sc, NSGPHY_MII_1000CTL, NSGPHY_1000CTL_MSE); } break; case IFM_100_T4: /* * XXX Not supported as a manual setting right now. */ return (EINVAL); case IFM_NONE: PHY_WRITE(sc, MII_BMCR, BMCR_ISO|BMCR_PDOWN); break; default: /* * BMCR data is stored in the ifmedia entry. */ PHY_WRITE(sc, MII_ANAR, mii_anar(ife->ifm_media)); PHY_WRITE(sc, MII_BMCR, ife->ifm_data); break; } 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 if we've hit the timeout. */ if (++sc->mii_ticks != sc->mii_anegticks) return (0); sc->mii_ticks = 0; /* * Check to see if we have link. */ reg = PHY_READ(sc, NSGPHY_MII_PHYSUP); if (reg & NSGPHY_PHYSUP_LNKSTS) break; PHY_RESET(sc); if (nsgphy_mii_phy_auto(sc, 0) == EJUSTRETURN) return(0); break; case MII_DOWN: mii_phy_down(sc); return (0); } /* Update the media status. */ mii_phy_status(sc); /* Callback if something changed. */ mii_phy_update(sc, cmd); return (0); } void nsgphy_status(struct mii_softc *sc) { struct mii_data *mii = sc->mii_pdata; int bmsr, bmcr, physup, anlpar, gstat; mii->mii_media_status = IFM_AVALID; mii->mii_media_active = IFM_ETHER; bmsr = PHY_READ(sc, NSGPHY_MII_BMSR) | PHY_READ(sc, NSGPHY_MII_BMSR); physup = PHY_READ(sc, NSGPHY_MII_PHYSUP); if (physup & NSGPHY_PHYSUP_LNKSTS) mii->mii_media_status |= IFM_ACTIVE; bmcr = PHY_READ(sc, NSGPHY_MII_BMCR); if (bmcr & NSGPHY_BMCR_LOOP) mii->mii_media_active |= IFM_LOOP; if (bmcr & NSGPHY_BMCR_AUTOEN) { if ((bmsr & NSGPHY_BMSR_ACOMP) == 0) { /* Erg, still trying, I guess... */ mii->mii_media_active |= IFM_NONE; return; } anlpar = PHY_READ(sc, NSGPHY_MII_ANLPAR); gstat = PHY_READ(sc, NSGPHY_MII_1000STS); if (gstat & NSGPHY_1000STS_LPFD) mii->mii_media_active |= IFM_1000_T|IFM_FDX; else if (gstat & NSGPHY_1000STS_LPHD) mii->mii_media_active |= IFM_1000_T|IFM_HDX; else if (anlpar & NSGPHY_ANLPAR_100T4) mii->mii_media_active |= IFM_100_T4; else if (anlpar & NSGPHY_ANLPAR_100FDX) mii->mii_media_active |= IFM_100_TX|IFM_FDX; else if (anlpar & NSGPHY_ANLPAR_100HDX) mii->mii_media_active |= IFM_100_TX; else if (anlpar & NSGPHY_ANLPAR_10FDX) mii->mii_media_active |= IFM_10_T|IFM_FDX; else if (anlpar & NSGPHY_ANLPAR_10HDX) mii->mii_media_active |= IFM_10_T|IFM_HDX; else mii->mii_media_active |= IFM_NONE; return; } switch(bmcr & (NSGPHY_BMCR_SPD1|NSGPHY_BMCR_SPD0)) { case NSGPHY_S1000: mii->mii_media_active |= IFM_1000_T; break; case NSGPHY_S100: mii->mii_media_active |= IFM_100_TX; break; case NSGPHY_S10: mii->mii_media_active |= IFM_10_T; break; default: break; } if (bmcr & NSGPHY_BMCR_FDX) mii->mii_media_active |= IFM_FDX; else mii->mii_media_active |= IFM_HDX; return; } static int nsgphy_mii_phy_auto(struct mii_softc *sc, int waitfor) { int bmsr, ktcr = 0, i; if ((sc->mii_flags & MIIF_DOINGAUTO) == 0) { PHY_RESET(sc); PHY_WRITE(sc, NSGPHY_MII_BMCR, 0); DELAY(1000); ktcr = PHY_READ(sc, NSGPHY_MII_1000CTL); PHY_WRITE(sc, NSGPHY_MII_1000CTL, ktcr | (NSGPHY_1000CTL_AFD|NSGPHY_1000CTL_AHD)); ktcr = PHY_READ(sc, NSGPHY_MII_1000CTL); DELAY(1000); PHY_WRITE(sc, NSGPHY_MII_ANAR, BMSR_MEDIA_TO_ANAR(sc->mii_capabilities) | ANAR_CSMA); DELAY(1000); PHY_WRITE(sc, NSGPHY_MII_BMCR, NSGPHY_BMCR_AUTOEN | NSGPHY_BMCR_STARTNEG); } if (waitfor) { /* Wait 500ms for it to complete. */ for (i = 0; i < 500; i++) { if ((bmsr = PHY_READ(sc, NSGPHY_MII_BMSR)) & NSGPHY_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); }