/* * 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. * * $FreeBSD$ */ /* * 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 #include "miibus_if.h" #if !defined(lint) static const char rcsid[] = "$FreeBSD$"; #endif static int xmphy_probe __P((device_t)); static int xmphy_attach __P((device_t)); static int xmphy_detach __P((device_t)); static device_method_t xmphy_methods[] = { /* device interface */ DEVMETHOD(device_probe, xmphy_probe), DEVMETHOD(device_attach, xmphy_attach), DEVMETHOD(device_detach, xmphy_detach), DEVMETHOD(device_shutdown, bus_generic_shutdown), { 0, 0 } }; static devclass_t xmphy_devclass; static driver_t xmphy_driver = { "xmphy", xmphy_methods, sizeof(struct mii_softc) }; DRIVER_MODULE(xmphy, miibus, xmphy_driver, xmphy_devclass, 0, 0); int xmphy_service __P((struct mii_softc *, struct mii_data *, int)); void xmphy_status __P((struct mii_softc *)); static int xmphy_mii_phy_auto __P((struct mii_softc *, int)); extern void mii_phy_auto_timeout __P((void *)); static int xmphy_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_xxXAQTI || MII_MODEL(ma->mii_id2) != MII_MODEL_XAQTI_XMACII) return(ENXIO); device_set_desc(dev, MII_STR_XAQTI_XMACII); return(0); } static int xmphy_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 = xmphy_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_SX, 0, sc->mii_inst), XMPHY_BMCR_FDX); PRINT("1000baseSX"); ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX, sc->mii_inst), 0); PRINT("1000baseSX-FDX"); 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 xmphy_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)); sc->mii_dev = NULL; LIST_REMOVE(sc, mii_list); return(0); } int xmphy_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: /* * 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: mii_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 5 seconds. */ if (++sc->mii_ticks != 5) 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; mii_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. */ 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 xmphy_status(sc) 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; } static int xmphy_mii_phy_auto(mii, waitfor) struct mii_softc *mii; int waitfor; { int bmsr, i; if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { PHY_WRITE(mii, XMPHY_MII_ANAR, XMPHY_ANAR_FDX|XMPHY_ANAR_HDX); PHY_WRITE(mii, 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(mii, 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 ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { mii->mii_flags |= MIIF_DOINGAUTO; timeout(mii_phy_auto_timeout, mii, hz >> 1); } return (EJUSTRETURN); }