/* $NetBSD: gentbi.c,v 1.15 2006/03/29 07:05:24 thorpej Exp $ */ /*- * SPDX-License-Identifier: BSD-2-Clause * * 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 into * many Gigabit Ethernet chips. * * All we have to do here is correctly report speed and duplex. */ #include <sys/cdefs.h> /* * Driver for generic unknown ten-bit interfaces(1000BASE-{LX,SX} * fiber interfaces). */ #include <sys/param.h> #include <sys/systm.h> #include <sys/kernel.h> #include <sys/module.h> #include <sys/socket.h> #include <sys/errno.h> #include <sys/bus.h> #include <net/if.h> #include <net/if_media.h> #include <dev/mii/mii.h> #include <dev/mii/miivar.h> #include "miidevs.h" #include "miibus_if.h" static int gentbi_probe(device_t); static int gentbi_attach(device_t); static device_method_t gentbi_methods[] = { /* device interface */ DEVMETHOD(device_probe, gentbi_probe), DEVMETHOD(device_attach, gentbi_attach), DEVMETHOD(device_detach, mii_phy_detach), DEVMETHOD(device_shutdown, bus_generic_shutdown), DEVMETHOD_END }; static driver_t gentbi_driver = { "gentbi", gentbi_methods, sizeof(struct mii_softc) }; DRIVER_MODULE(gentbi, miibus, gentbi_driver, 0, 0); static int gentbi_service(struct mii_softc *, struct mii_data *, int); static void gentbi_status(struct mii_softc *); static const struct mii_phy_funcs gentbi_funcs = { gentbi_service, gentbi_status, mii_phy_reset }; static int gentbi_probe(device_t dev) { device_t parent; struct mii_attach_args *ma; int bmsr, extsr; parent = device_get_parent(dev); ma = device_get_ivars(dev); /* * We match as a generic TBI if: * * - There is no media in the BMSR. * - EXTSR has only 1000X. */ bmsr = MIIBUS_READREG(parent, ma->mii_phyno, MII_BMSR); if ((bmsr & BMSR_EXTSTAT) == 0 || (bmsr & BMSR_MEDIAMASK) != 0) return (ENXIO); extsr = MIIBUS_READREG(parent, ma->mii_phyno, MII_EXTSR); if (extsr & (EXTSR_1000TFDX|EXTSR_1000THDX)) return (ENXIO); 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. */ device_set_desc(dev, "Generic ten-bit interface"); return (BUS_PROBE_LOW_PRIORITY); } return (ENXIO); } static int gentbi_attach(device_t dev) { struct mii_softc *sc; sc = device_get_softc(dev); mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &gentbi_funcs, 0); 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) & sc->mii_capmask & ~BMSR_MEDIAMASK; if (sc->mii_capabilities & BMSR_EXTSTAT) sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); device_printf(dev, " "); mii_phy_add_media(sc); printf("\n"); MIIBUS_MEDIAINIT(sc->mii_dev); return (0); } static int gentbi_service(struct mii_softc *sc, struct mii_data *mii, int cmd) { switch (cmd) { case MII_POLLSTAT: break; case MII_MEDIACHG: mii_phy_setmedia(sc); break; case MII_TICK: if (mii_phy_tick(sc) == EJUSTRETURN) return (0); break; } /* Update the media status. */ PHY_STATUS(sc); /* Callback if something changed. */ mii_phy_update(sc, cmd); return (0); } static 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 |= IFM_FDX | mii_phy_flowstatus(sc); else mii->mii_media_active |= IFM_HDX; } else mii->mii_media_active = ife->ifm_media; }
