376 lines
10 KiB
C
376 lines
10 KiB
C
/* $NetBSD: inphy.c,v 1.1 1998/08/11 00:00:28 thorpej Exp $ */
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/*-
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* Copyright (c) 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
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* NASA Ames Research Center.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1997 Manuel Bouyer. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Manuel Bouyer.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* driver for Intel's i82555 ethernet 10/100 PHY
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* Data Sheet available from www.intel.com
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/device.h>
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#include <sys/malloc.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include <net/if_media.h>
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#include <dev/mii/mii.h>
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#include <dev/mii/miivar.h>
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#include <dev/mii/miidevs.h>
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#include <dev/mii/inphyreg.h>
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struct inphy_softc {
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struct mii_softc sc_mii; /* generic PHY */
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int sc_capabilities;
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int sc_ticks;
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int sc_active;
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};
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int inphymatch __P((struct device *, struct cfdata *, void *));
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void inphyattach __P((struct device *, struct device *, void *));
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struct cfattach inphy_ca = {
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sizeof(struct inphy_softc), inphymatch, inphyattach
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};
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#define INPHY_READ(sc, reg) \
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(*(sc)->sc_mii.mii_pdata->mii_readreg)((sc)->sc_mii.mii_dev.dv_parent, \
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(sc)->sc_mii.mii_phy, (reg))
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#define INPHY_WRITE(sc, reg, val) \
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(*(sc)->sc_mii.mii_pdata->mii_writereg)((sc)->sc_mii.mii_dev.dv_parent, \
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(sc)->sc_mii.mii_phy, (reg), (val))
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int inphy_service __P((struct mii_softc *, struct mii_data *, int));
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void inphy_reset __P((struct inphy_softc *));
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void inphy_auto __P((struct inphy_softc *));
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void inphy_status __P((struct inphy_softc *));
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int
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inphymatch(parent, match, aux)
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struct device *parent;
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struct cfdata *match;
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void *aux;
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{
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struct mii_attach_args *ma = aux;
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if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_INTEL &&
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MII_MODEL(ma->mii_id2) == MII_MODEL_INTEL_I82555)
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return (1);
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return (0);
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}
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void
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inphyattach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct inphy_softc *sc = (struct inphy_softc *)self;
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struct mii_attach_args *ma = aux;
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struct mii_data *mii = ma->mii_data;
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printf(": %s, rev. %d\n", MII_STR_INTEL_I82555,
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MII_REV(ma->mii_id2));
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sc->sc_mii.mii_inst = mii->mii_instance;
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sc->sc_mii.mii_phy = ma->mii_phyno;
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sc->sc_mii.mii_service = inphy_service;
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sc->sc_mii.mii_pdata = mii;
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#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
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#if 0
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/* Can't do this on the i82557! */
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ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->sc_mii.mii_inst),
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BMCR_ISO);
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#endif
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ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->sc_mii.mii_inst),
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BMCR_LOOP|BMCR_S100);
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inphy_reset(sc);
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sc->sc_capabilities = INPHY_READ(sc, MII_BMSR) & ma->mii_capmask;
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printf("%s: ", sc->sc_mii.mii_dev.dv_xname);
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if ((sc->sc_capabilities & BMSR_MEDIAMASK) == 0)
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printf("no media present");
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else
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mii_add_media(mii, sc->sc_capabilities, sc->sc_mii.mii_inst);
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printf("\n");
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#undef ADD
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}
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int
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inphy_service(self, mii, cmd)
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struct mii_softc *self;
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struct mii_data *mii;
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int cmd;
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{
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struct inphy_softc *sc = (struct inphy_softc *)self;
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int reg;
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switch (cmd) {
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case MII_POLLSTAT:
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/*
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* If we're not polling our PHY instance, just return.
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*/
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if (IFM_INST(mii->mii_media.ifm_media) !=
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sc->sc_mii.mii_inst)
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return (0);
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break;
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case MII_MEDIACHG:
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/*
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* If the media indicates a different PHY instance,
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* isolate ourselves.
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*/
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if (IFM_INST(mii->mii_media.ifm_media) !=
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sc->sc_mii.mii_inst) {
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reg = INPHY_READ(sc, MII_BMCR);
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INPHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
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return (0);
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}
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/*
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* If the interface is not up, don't do anything.
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*/
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if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
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break;
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switch (IFM_SUBTYPE(mii->mii_media.ifm_media)) {
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case IFM_AUTO:
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/*
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* If we're already in auto mode, just return.
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*/
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if (INPHY_READ(sc, MII_BMCR) & BMCR_AUTOEN)
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return (0);
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inphy_auto(sc);
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break;
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case IFM_100_T4:
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/*
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* XXX Not supported as a manual setting right now.
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*/
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return (EINVAL);
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default:
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/*
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* BMCR data is stored in the ifmedia entry.
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*/
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INPHY_WRITE(sc, MII_ANAR,
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mii_anar(mii->mii_media.ifm_media));
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INPHY_WRITE(sc, MII_BMCR,
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mii->mii_media.ifm_cur->ifm_data);
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}
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break;
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case MII_TICK:
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/*
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* If we're not currently selected, just return.
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*/
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if (IFM_INST(mii->mii_media.ifm_media) !=
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sc->sc_mii.mii_inst)
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return (0);
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/*
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* Only used for autonegotiation.
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*/
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if (IFM_SUBTYPE(mii->mii_media.ifm_media) != IFM_AUTO)
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return (0);
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/*
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* Is the interface even up?
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*/
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if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
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return (0);
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/*
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* Check to see if we have link. If we do, we don't
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* need to restart the autonegotiation process. Read
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* the BMSR twice in case it's latched.
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*/
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reg = INPHY_READ(sc, MII_BMSR) | INPHY_READ(sc, MII_BMSR);
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if (reg & BMSR_LINK)
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return (0);
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/*
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* Only retry autonegotiation every 5 seconds.
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*/
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if (++sc->sc_ticks != 5)
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return (0);
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sc->sc_ticks = 0;
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inphy_reset(sc);
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inphy_auto(sc);
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break;
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}
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/* Update the media status. */
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inphy_status(sc);
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/* Callback if something changed. */
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if (sc->sc_active != mii->mii_media_active || cmd == MII_MEDIACHG) {
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(*mii->mii_statchg)(sc->sc_mii.mii_dev.dv_parent);
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sc->sc_active = mii->mii_media_active;
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}
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return (0);
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}
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void
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inphy_status(sc)
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struct inphy_softc *sc;
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{
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struct mii_data *mii = sc->sc_mii.mii_pdata;
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int bmsr, bmcr, scr;
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mii->mii_media_status = IFM_AVALID;
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mii->mii_media_active = IFM_ETHER;
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bmsr = INPHY_READ(sc, MII_BMSR) | INPHY_READ(sc, MII_BMSR);
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if (bmsr & BMSR_LINK)
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mii->mii_media_status |= IFM_ACTIVE;
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bmcr = INPHY_READ(sc, MII_BMCR);
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if (bmcr & BMCR_ISO) {
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mii->mii_media_active |= IFM_NONE;
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mii->mii_media_status = 0;
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return;
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}
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if (bmcr & BMCR_LOOP)
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mii->mii_media_active |= IFM_LOOP;
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if (bmcr & BMCR_AUTOEN) {
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scr = INPHY_READ(sc, MII_INPHY_SCR);
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if (scr & SCR_T4)
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mii->mii_media_active |= IFM_100_T4;
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else if (scr & SCR_S100)
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mii->mii_media_active |= IFM_100_TX;
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else
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mii->mii_media_active |= IFM_10_T;
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if (scr & SCR_FDX)
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mii->mii_media_active |= IFM_FDX;
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} else {
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if (bmcr & BMCR_S100)
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mii->mii_media_active |= IFM_100_TX;
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else
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mii->mii_media_active |= IFM_10_T;
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if (bmcr & BMCR_FDX)
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mii->mii_media_active |= IFM_FDX;
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}
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}
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void
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inphy_auto(sc)
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struct inphy_softc *sc;
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{
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int bmsr, i;
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INPHY_WRITE(sc, MII_ANAR,
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BMSR_MEDIA_TO_ANAR(sc->sc_capabilities) | ANAR_CSMA);
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INPHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN | BMCR_STARTNEG);
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/* Wait 500ms for it to complete. */
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for (i = 0; i < 500; i++) {
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if ((bmsr = INPHY_READ(sc, MII_BMSR)) & BMSR_ACOMP)
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return;
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delay(1000);
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}
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if ((bmsr & BMSR_ACOMP) == 0)
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printf("%s: autonegotiation failed to complete\n",
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sc->sc_mii.mii_dev.dv_xname);
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}
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void
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inphy_reset(sc)
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struct inphy_softc *sc;
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{
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int reg, i;
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/*
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* The i82557 wedges if we isolate all of its PHYs!
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*/
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if (sc->sc_mii.mii_inst == 0)
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INPHY_WRITE(sc, MII_BMCR, BMCR_RESET);
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else
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INPHY_WRITE(sc, MII_BMCR, BMCR_RESET|BMCR_ISO);
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/* Wait 100ms for it to complete. */
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for (i = 0; i < 100; i++) {
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reg = INPHY_READ(sc, MII_BMCR);
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if ((reg & BMCR_RESET) == 0)
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break;
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delay(1000);
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}
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/* Make sure the PHY is isolated. */
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if (sc->sc_mii.mii_inst != 0)
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INPHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
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}
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