/* $OpenBSD: mii.c,v 1.8 2000/04/27 07:37:13 niklas Exp $ */ /* $NetBSD: mii.c,v 1.9 1998/11/05 04:08:02 thorpej Exp $ */ /*- * Copyright (c) 1998 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * 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. */ /* * MII bus layer, glues MII-capable network interface drivers to sharable * PHY drivers. This exports an interface compatible with BSD/OS 3.0's, * plus some NetBSD extensions. */ #include #include #include #include #include #include #include #include int mii_print __P((void *, const char *)); int mii_submatch __P((struct device *, void *, void *)); #define MIICF_PHY 0 /* cf_loc index */ #define MIICF_PHY_DEFAULT (-1) /* default phy device */ /* * Helper function used by network interface drivers, attaches PHYs * to the network interface driver parent. */ void mii_phy_probe(parent, mii, capmask) struct device *parent; struct mii_data *mii; int capmask; { struct mii_attach_args ma; struct mii_softc *child; LIST_INIT(&mii->mii_phys); for (ma.mii_phyno = 0; ma.mii_phyno < MII_NPHY; ma.mii_phyno++) { /* * Check to see if there is a PHY at this address. If * the register contains garbage, assume no. */ ma.mii_id1 = (*mii->mii_readreg)(parent, ma.mii_phyno, MII_PHYIDR1); ma.mii_id2 = (*mii->mii_readreg)(parent, ma.mii_phyno, MII_PHYIDR2); if ((ma.mii_id1 == 0 || ma.mii_id1 == 0xffff) && (ma.mii_id2 == 0 || ma.mii_id2 == 0xffff)) { /* * ARGH!! 3Com internal PHYs report 0/0 in their * ID registers! If we spot this, check to see * if the BMSR has reasonable data in it. * And if that wasn't enough there are PHYs * reporting 0xffff/0xffff too. */ if ((MII_OUI(ma.mii_id1, ma.mii_id2) == 0 && MII_MODEL(ma.mii_id2) == 0) || (MII_OUI(ma.mii_id1, ma.mii_id2) == 0x3fffff && MII_MODEL(ma.mii_id2) == 0x3f)) { int bmsr = (*mii->mii_readreg)(parent, ma.mii_phyno, MII_BMSR); if (bmsr == 0 || bmsr == 0xffff || (bmsr & BMSR_MEDIAMASK) == 0) continue; } else continue; } ma.mii_data = mii; ma.mii_capmask = capmask; if ((child = (struct mii_softc *)config_found_sm(parent, &ma, mii_print, mii_submatch)) != NULL) { /* * Link it up in the parent's MII data. */ LIST_INSERT_HEAD(&mii->mii_phys, child, mii_list); mii->mii_instance++; } } } #ifndef PMON int mii_detach(msc, flags) struct mii_softc *msc; int flags; { LIST_REMOVE(msc, mii_list); /* XXX The following condition should always be true. */ if (msc->mii_inst == msc->mii_pdata->mii_instance - 1) msc->mii_pdata->mii_instance--; return config_detach(&msc->mii_dev, flags); } #endif int mii_print(aux, pnp) void *aux; const char *pnp; { struct mii_attach_args *ma = aux; if (pnp != NULL) printf("OUI 0x%06x model 0x%04x rev %d at %s", MII_OUI(ma->mii_id1, ma->mii_id2), MII_MODEL(ma->mii_id2), MII_REV(ma->mii_id2), pnp); printf(" phy %d", ma->mii_phyno); return (UNCONF); } int mii_submatch(parent, match, aux) struct device *parent; void *match, *aux; { struct cfdata *cf = match; struct mii_attach_args *ma = aux; if (ma->mii_phyno != cf->cf_loc[MIICF_PHY] && cf->cf_loc[MIICF_PHY] != MIICF_PHY_DEFAULT) return (0); return ((*cf->cf_attach->ca_match)(parent, cf, aux)); } /* * Media changed; notify all PHYs. */ int mii_mediachg(mii) struct mii_data *mii; { struct mii_softc *child; int rv; mii->mii_media_status = 0; mii->mii_media_active = IFM_NONE; for (child = LIST_FIRST(&mii->mii_phys); child != NULL; child = LIST_NEXT(child, mii_list)) { rv = (*child->mii_service)(child, mii, MII_MEDIACHG); if (rv) return (rv); } return (0); } /* * Call the PHY tick routines, used during autonegotiation. */ void mii_tick(mii) struct mii_data *mii; { struct mii_softc *child; for (child = LIST_FIRST(&mii->mii_phys); child != NULL; child = LIST_NEXT(child, mii_list)) (void) (*child->mii_service)(child, mii, MII_TICK); } /* * Get media status from PHYs. */ void mii_pollstat(mii) struct mii_data *mii; { struct mii_softc *child; mii->mii_media_status = 0; mii->mii_media_active = IFM_NONE; for (child = LIST_FIRST(&mii->mii_phys); child != NULL; child = LIST_NEXT(child, mii_list)) (void) (*child->mii_service)(child, mii, MII_POLLSTAT); } /* * Inform the PHYs that the interface is down. */ void mii_down(mii) struct mii_data *mii; { struct mii_softc *child; for (child = LIST_FIRST(&mii->mii_phys); child != NULL; child = LIST_NEXT(child, mii_list)) (void) (*child->mii_service)(child, mii, MII_DOWN); }