/* $OpenBSD: gentbi.c,v 1.12 2022/04/06 18:59:29 naddy Exp $ */ /* $NetBSD: gentbi.c,v 1.12 2004/04/11 15:40:56 thorpej Exp $ */ /*- * Copyright (c) 1998, 1999, 2000, 2001 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, * NASA Ames Research Center. * * 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. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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. */ /* * Copyright (c) 1997 Manuel Bouyer. 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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 generic ten-bit (1000BASE-SX) interfaces, built in to * many Gigabit Ethernet chips. * * All we have to do here is correctly report speed and duplex. */ #include <sys/param.h> #include <sys/systm.h> #include <sys/kernel.h> #include <sys/device.h> #include <sys/socket.h> #include <sys/errno.h> #include <net/if.h> #include <net/if_var.h> #include <net/if_media.h> #include <dev/mii/mii.h> #include <dev/mii/miivar.h> int gentbimatch(struct device *, void *, void *); void gentbiattach(struct device *, struct device *, void *); const struct cfattach gentbi_ca = { sizeof(struct mii_softc), gentbimatch, gentbiattach, mii_phy_detach }; struct cfdriver gentbi_cd = { NULL, "gentbi", DV_DULL }; int gentbi_service(struct mii_softc *, struct mii_data *, int); void gentbi_status(struct mii_softc *); const struct mii_phy_funcs gentbi_funcs = { gentbi_service, gentbi_status, mii_phy_reset, }; int gentbimatch(struct device *parent, void *match, void *aux) { struct mii_attach_args *ma = aux; struct mii_data *mii = ma->mii_data; int bmsr, extsr; /* * We match as a generic TBI if: * * - There is no media in the BMSR. * - EXTSR has only 1000X. */ bmsr = (*mii->mii_readreg)(parent, ma->mii_phyno, MII_BMSR); if ((bmsr & BMSR_EXTSTAT) == 0 || (bmsr & BMSR_MEDIAMASK) != 0) return (0); extsr = (*mii->mii_readreg)(parent, ma->mii_phyno, MII_EXTSR); if (extsr & (EXTSR_1000TFDX|EXTSR_1000THDX)) return (0); if (extsr & (EXTSR_1000XFDX|EXTSR_1000XHDX)) { /* * We think this is a generic TBI. Return a match * priority higher than ukphy, but lower than what * specific drivers will return. */ return (2); } return (0); } void gentbiattach(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; printf(": Generic ten-bit interface, rev. %d\n", MII_REV(ma->mii_id2)); sc->mii_inst = mii->mii_instance; sc->mii_phy = ma->mii_phyno; sc->mii_funcs = &gentbi_funcs; sc->mii_pdata = mii; sc->mii_flags = ma->mii_flags; sc->mii_anegticks = MII_ANEGTICKS; PHY_RESET(sc); /* * Mask out all media in the BMSR. We only are really interested * in "auto". */ sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask & ~BMSR_MEDIAMASK; 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); } int gentbi_service(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; mii_phy_setmedia(sc); break; case MII_TICK: /* * If we're not currently selected, just return. */ if (IFM_INST(ife->ifm_media) != sc->mii_inst) return (0); if (mii_phy_tick(sc) == 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 gentbi_status(struct mii_softc *sc) { struct mii_data *mii = sc->mii_pdata; struct ifmedia_entry *ife = mii->mii_media.ifm_cur; int bmsr, bmcr, anlpar; mii->mii_media_status = IFM_AVALID; mii->mii_media_active = IFM_ETHER; bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); if (bmsr & BMSR_LINK) mii->mii_media_status |= IFM_ACTIVE; bmcr = PHY_READ(sc, MII_BMCR); if (bmcr & BMCR_ISO) { mii->mii_media_active |= IFM_NONE; mii->mii_media_status = 0; return; } if (bmcr & BMCR_LOOP) mii->mii_media_active |= IFM_LOOP; if (bmcr & BMCR_AUTOEN) { /* * The media status bits are only valid if autonegotiation * has completed (or it's disabled). */ if ((bmsr & BMSR_ACOMP) == 0) { /* Erg, still trying, I guess... */ mii->mii_media_active |= IFM_NONE; return; } /* * The media is always 1000baseSX. Check the ANLPAR to * see if we're doing full-duplex. */ mii->mii_media_active |= IFM_1000_SX; anlpar = PHY_READ(sc, MII_ANLPAR); if ((sc->mii_extcapabilities & EXTSR_1000XFDX) != 0 && (anlpar & ANLPAR_X_FD) != 0) mii->mii_media_active |= mii_phy_flowstatus(sc) | IFM_FDX; } else mii->mii_media_active = ife->ifm_media; }
