/* * 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. * * $FreeBSD: src/sys/dev/mii/nsgphy.c,v 1.1.2.3 2002/11/08 21:53:49 semenu Exp $ * $DragonFly: src/sys/dev/netif/mii_layer/nsgphy.c,v 1.4 2003/08/27 09:38:31 rob Exp $ * * $FreeBSD: src/sys/dev/mii/nsgphy.c,v 1.1.2.3 2002/11/08 21:53:49 semenu Exp $ */ /* * 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 "mii.h" #include "miivar.h" #include "miidevs.h" #include "nsgphyreg.h" #include "miibus_if.h" static int nsgphy_probe (device_t); static int nsgphy_attach (device_t); static int nsgphy_detach (device_t); static device_method_t nsgphy_methods[] = { /* device interface */ DEVMETHOD(device_probe, nsgphy_probe), DEVMETHOD(device_attach, nsgphy_attach), DEVMETHOD(device_detach, nsgphy_detach), DEVMETHOD(device_shutdown, bus_generic_shutdown), { 0, 0 } }; static devclass_t nsgphy_devclass; static driver_t nsgphy_driver = { "nsgphy", nsgphy_methods, sizeof(struct mii_softc) }; DRIVER_MODULE(nsgphy, miibus, nsgphy_driver, nsgphy_devclass, 0, 0); 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 *); static int nsgphy_probe(dev) device_t dev; { struct mii_attach_args *ma; ma = device_get_ivars(dev); if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_NATSEMI) { if (MII_MODEL(ma->mii_id2) == MII_MODEL_NATSEMI_DP83891) { device_set_desc(dev, MII_STR_NATSEMI_DP83891); return(0); } if (MII_MODEL(ma->mii_id2) == MII_MODEL_NATSEMI_DP83861) { device_set_desc(dev, MII_STR_NATSEMI_DP83861); return(0); } } return(ENXIO); } static int nsgphy_attach(dev) device_t dev; { struct mii_softc *sc; struct mii_attach_args *ma; struct mii_data *mii; const char *sep = ""; sc = device_get_softc(dev); ma = device_get_ivars(dev); sc->mii_dev = device_get_parent(dev); mii = device_get_softc(sc->mii_dev); LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); sc->mii_inst = mii->mii_instance; sc->mii_phy = ma->mii_phyno; sc->mii_service = nsgphy_service; sc->mii_pdata = mii; sc->mii_flags |= MIIF_NOISOLATE; mii->mii_instance++; #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) #define PRINT(s) printf("%s%s", sep, s); sep = ", " ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), BMCR_ISO); #if 0 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), BMCR_LOOP|BMCR_S100); #endif mii_phy_reset(sc); device_printf(dev, " "); ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_TX, IFM_FDX, sc->mii_inst), NSGPHY_S1000|NSGPHY_BMCR_FDX); PRINT("1000baseTX-FDX"); ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_TX, 0, sc->mii_inst), NSGPHY_S1000); PRINT("1000baseTX"); sc->mii_capabilities = (PHY_READ(sc, MII_BMSR) | (BMSR_10TFDX|BMSR_10THDX)) & ma->mii_capmask; ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_FDX, sc->mii_inst), NSGPHY_S100|NSGPHY_BMCR_FDX); PRINT("100baseTX-FDX"); ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, 0, sc->mii_inst), NSGPHY_S100); PRINT("100baseTX"); ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_FDX, sc->mii_inst), NSGPHY_S10|NSGPHY_BMCR_FDX); PRINT("10baseT-FDX"); ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, sc->mii_inst), NSGPHY_S10); PRINT("10baseT"); ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0); PRINT("auto"); printf("\n"); #undef ADD #undef PRINT MIIBUS_MEDIAINIT(sc->mii_dev); return(0); } static int nsgphy_detach(dev) device_t dev; { struct mii_softc *sc; struct mii_data *mii; sc = device_get_softc(dev); mii = device_get_softc(device_get_parent(dev)); if (sc->mii_flags & MIIF_DOINGAUTO) untimeout(mii_phy_auto_timeout, sc, sc->mii_auto_ch); sc->mii_dev = NULL; LIST_REMOVE(sc, mii_list); return(0); } int nsgphy_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: #ifdef foo /* * If we're already in auto mode, just return. */ if (PHY_READ(sc, NSGPHY_MII_BMCR) & NSGPHY_BMCR_AUTOEN) return (0); #endif (void) nsgphy_mii_phy_auto(sc, 0); break; case IFM_1000_TX: 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 every 17 seconds. * Actually, for gigE PHYs, we should wait longer, since * 5 seconds is the mimimum time the documentation * says to wait for a 1000mbps link to be established. */ if (++sc->mii_ticks != 17) 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; mii_phy_reset(sc); if (nsgphy_mii_phy_auto(sc, 0) == EJUSTRETURN) return(0); break; } /* Update the media status. */ nsgphy_status(sc); /* Callback if something changed. */ if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { MIIBUS_STATCHG(sc->mii_dev); sc->mii_active = mii->mii_media_active; } return (0); } void nsgphy_status(sc) 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); 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_TX|IFM_FDX; else if (gstat & NSGPHY_1000STS_LPHD) mii->mii_media_active |= IFM_1000_TX|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_TX; 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(mii, waitfor) struct mii_softc *mii; int waitfor; { int bmsr, ktcr = 0, i; if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { mii_phy_reset(mii); PHY_WRITE(mii, NSGPHY_MII_BMCR, 0); DELAY(1000); ktcr = PHY_READ(mii, NSGPHY_MII_1000CTL); PHY_WRITE(mii, NSGPHY_MII_1000CTL, ktcr | (NSGPHY_1000CTL_AFD|NSGPHY_1000CTL_AHD)); ktcr = PHY_READ(mii, NSGPHY_MII_1000CTL); DELAY(1000); PHY_WRITE(mii, NSGPHY_MII_ANAR, BMSR_MEDIA_TO_ANAR(mii->mii_capabilities) | ANAR_CSMA); DELAY(1000); PHY_WRITE(mii, 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(mii, 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 ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { mii->mii_flags |= MIIF_DOINGAUTO; mii->mii_auto_ch = timeout(mii_phy_auto_timeout, mii, hz >> 1); } return (EJUSTRETURN); }