/* $NetBSD: ipgphy.c,v 1.10.24.1 2023/06/21 22:11:29 martin Exp $ */ /* $OpenBSD: ipgphy.c,v 1.19 2015/07/19 06:28:12 yuo 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/IP1001 10/100/1000 PHY. */ #include __KERNEL_RCSID(0, "$NetBSD: ipgphy.c,v 1.10.24.1 2023/06/21 22:11:29 martin Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include static int ipgphy_match(device_t, cfdata_t, void *); static void ipgphy_attach(device_t, device_t, void *); struct ipgphy_softc { struct mii_softc sc_mii; bool need_loaddspcode; }; CFATTACH_DECL_NEW(ipgphy, sizeof(struct ipgphy_softc), ipgphy_match, ipgphy_attach, mii_phy_detach, mii_phy_activate); static int ipgphy_service(struct mii_softc *, struct mii_data *, int); static void ipgphy_status(struct mii_softc *); static int ipgphy_mii_phy_auto(struct mii_softc *, u_int); static void ipgphy_load_dspcode(struct mii_softc *); static void ipgphy_reset(struct mii_softc *); static const struct mii_phy_funcs ipgphy_funcs = { ipgphy_service, ipgphy_status, ipgphy_reset, }; static const struct mii_phydesc ipgphys[] = { MII_PHY_DESC(xxICPLUS, IP1000A), MII_PHY_DESC(xxICPLUS, IP1001), MII_PHY_END, }; static int ipgphy_match(device_t parent, cfdata_t match, void *aux) { struct mii_attach_args *ma = aux; if (mii_phy_match(ma, ipgphys) != NULL) return 10; return 0; } static void ipgphy_attach(device_t parent, device_t self, void *aux) { struct ipgphy_softc *isc = device_private(self); struct mii_softc *sc = &isc->sc_mii; struct mii_attach_args *ma = aux; struct mii_data *mii = ma->mii_data; const struct mii_phydesc *mpd; prop_dictionary_t dict; mpd = mii_phy_match(ma, ipgphys); aprint_naive(": Media interface\n"); aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); sc->mii_dev = self; sc->mii_inst = mii->mii_instance; sc->mii_phy = ma->mii_phyno; sc->mii_mpd_oui = MII_OUI(ma->mii_id1, ma->mii_id2); sc->mii_mpd_model = MII_MODEL(ma->mii_id2); sc->mii_mpd_rev = MII_REV(ma->mii_id2); sc->mii_funcs = &ipgphy_funcs; sc->mii_pdata = mii; sc->mii_flags = ma->mii_flags; sc->mii_flags |= MIIF_NOISOLATE; if (device_is_a(parent, "stge")) { dict = device_properties(parent); prop_dictionary_get_bool(dict, "need_loaddspcode", &isc->need_loaddspcode); } mii_lock(mii); PHY_RESET(sc); PHY_READ(sc, MII_BMSR, &sc->mii_capabilities); sc->mii_capabilities &= ma->mii_capmask; //sc->mii_capabilities &= ~BMSR_ANEG; if (sc->mii_capabilities & BMSR_EXTSTAT) PHY_READ(sc, MII_EXTSR, &sc->mii_extcapabilities); mii_unlock(mii); mii_phy_add_media(sc); } static int ipgphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) { struct ifmedia_entry *ife = mii->mii_media.ifm_cur; uint16_t reg, speed; KASSERT(mii_locked(mii)); 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) { 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; PHY_RESET(sc); switch (IFM_SUBTYPE(ife->ifm_media)) { case IFM_AUTO: case IFM_1000_T: /* * This device is required to do auto negotiation * on 1000BASE-T. */ (void)ipgphy_mii_phy_auto(sc, ife->ifm_media); goto done; break; case IFM_100_TX: speed = BMCR_S100; break; case IFM_10_T: speed = BMCR_S10; break; default: return EINVAL; } if ((ife->ifm_media & IFM_FDX) != 0) speed |= BMCR_FDX; PHY_WRITE(sc, MII_100T2CR, 0); PHY_WRITE(sc, MII_BMCR, speed); 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) && (IFM_SUBTYPE(ife->ifm_media) != IFM_1000_T)) { sc->mii_ticks = 0; break; } /* * 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. */ PHY_READ(sc, MII_BMSR, ®); PHY_READ(sc, MII_BMSR, ®); if (reg & BMSR_LINK) { /* * Reset autonegotiation timer to 0 in case the link * goes down in the next tick. */ sc->mii_ticks = 0; /* See above. */ 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) break; sc->mii_ticks = 0; ipgphy_mii_phy_auto(sc, ife->ifm_media); break; } /* Update the media status. */ ipgphy_status(sc); /* Callback if something changed. */ mii_phy_update(sc, cmd); return 0; } static void ipgphy_status(struct mii_softc *sc) { struct mii_data *mii = sc->mii_pdata; struct ifmedia_entry *ife = mii->mii_media.ifm_cur; uint16_t bmsr, bmcr, stat, gtsr; KASSERT(mii_locked(mii)); /* For IP1000A, use generic way */ if (sc->mii_mpd_model == MII_MODEL_xxICPLUS_IP1000A) { ukphy_status(sc); return; } mii->mii_media_status = IFM_AVALID; mii->mii_media_active = IFM_ETHER; PHY_READ(sc, MII_BMSR, &bmsr); PHY_READ(sc, MII_BMSR, &bmsr); if (bmsr & BMSR_LINK) mii->mii_media_status |= IFM_ACTIVE; PHY_READ(sc, MII_BMCR, &bmcr); if (bmcr & BMCR_LOOP) mii->mii_media_active |= IFM_LOOP; if (bmcr & BMCR_AUTOEN) { if ((bmsr & BMSR_ACOMP) == 0) { /* Erg, still trying, I guess... */ mii->mii_media_active |= IFM_NONE; return; } PHY_READ(sc, IPGPHY_LSR, &stat); switch (stat & IPGPHY_LSR_SPEED_MASK) { case IPGPHY_LSR_SPEED_10: mii->mii_media_active |= IFM_10_T; break; case IPGPHY_LSR_SPEED_100: mii->mii_media_active |= IFM_100_TX; break; case IPGPHY_LSR_SPEED_1000: mii->mii_media_active |= IFM_1000_T; break; default: mii->mii_media_active |= IFM_NONE; return; } if (stat & IPGPHY_LSR_FULL_DUPLEX) mii->mii_media_active |= IFM_FDX; else mii->mii_media_active |= IFM_HDX; if (mii->mii_media_active & IFM_FDX) mii->mii_media_active |= mii_phy_flowstatus(sc); if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T) { PHY_READ(sc, MII_100T2SR, >sr); if (gtsr & GTSR_MS_RES) mii->mii_media_active |= IFM_ETH_MASTER; } } else mii->mii_media_active = ife->ifm_media; } static int ipgphy_mii_phy_auto(struct mii_softc *sc, u_int media) { uint16_t reg = 0; u_int subtype = IFM_SUBTYPE(media); KASSERT(mii_locked(sc->mii_pdata)); /* XXX Is it requreid ? */ if (sc->mii_mpd_model == MII_MODEL_xxICPLUS_IP1001) { PHY_READ(sc, MII_ANAR, ®); reg &= ~(ANAR_PAUSE_SYM | ANAR_PAUSE_ASYM); reg |= ANAR_NP; } if (subtype == IFM_AUTO) reg |= ANAR_10 | ANAR_10_FD | ANAR_TX | ANAR_TX_FD; if (sc->mii_flags & MIIF_DOPAUSE) reg |= ANAR_PAUSE_SYM | ANAR_PAUSE_ASYM; PHY_WRITE(sc, MII_ANAR, reg | ANAR_CSMA); if (subtype == IFM_AUTO) reg = GTCR_ADV_1000TFDX | GTCR_ADV_1000THDX; else if (subtype == IFM_1000_T) { if ((media & IFM_FDX) != 0) reg = GTCR_ADV_1000TFDX; else reg = GTCR_ADV_1000THDX; } else reg = 0; PHY_WRITE(sc, MII_100T2CR, reg); PHY_WRITE(sc, MII_BMCR, BMCR_FDX | BMCR_AUTOEN | BMCR_STARTNEG); return EJUSTRETURN; } static 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); } static void ipgphy_reset(struct mii_softc *sc) { struct ipgphy_softc *isc = device_private(sc->mii_dev); uint16_t reg; KASSERT(mii_locked(sc->mii_pdata)); mii_phy_reset(sc); /* Clear autoneg/full-duplex as we don't want it after reset */ PHY_READ(sc, MII_BMCR, ®); reg &= ~(BMCR_AUTOEN | BMCR_FDX); PHY_WRITE(sc, MII_BMCR, reg); if (isc->need_loaddspcode) ipgphy_load_dspcode(sc); }