Driver for the 10BASE-T portion of the AMD 79c901 PHY.
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thorpej
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/* $NetBSD: amhphy.c,v 1.1 2001/08/25 04:06:26 thorpej Exp $ */
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/*
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* Copyright 2001 Wasabi Systems, Inc.
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* All rights reserved.
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*
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* Written by Jason R. Thorpe for Wasabi Systems, Inc.
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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 for the NetBSD Project by
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* Wasabi Systems, Inc.
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* 4. The name of Wasabi Systems, Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
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* 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 WASABI SYSTEMS, INC
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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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* Driver for the 10BASE-T portion of the AMD Am79c901 PHY.
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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 <sys/errno.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/amhphyreg.h>
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int amhphymatch(struct device *, struct cfdata *, void *);
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void amhphyattach(struct device *, struct device *, void *);
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struct cfattach amhphy_ca = {
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sizeof(struct mii_softc), amhphymatch, amhphyattach,
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mii_phy_detach, mii_phy_activate
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};
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int amhphy_service(struct mii_softc *, struct mii_data *, int);
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void amhphy_status(struct mii_softc *);
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const struct mii_phy_funcs amhphy_funcs = {
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amhphy_service, amhphy_status, mii_phy_reset,
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};
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const struct mii_phydesc amhphys[] = {
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{ MII_OUI_yyAMD, MII_MODEL_yyAMD_79c901,
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MII_STR_yyAMD_79c901 },
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{ 0, 0,
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NULL },
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};
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int
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amhphymatch(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_phy_match(ma, amhphys) != NULL)
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return (10);
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return (0);
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}
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void
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amhphyattach(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 mii_softc *sc = (struct mii_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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const struct mii_phydesc *mpd;
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mpd = mii_phy_match(ma, amhphys);
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printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
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sc->mii_inst = mii->mii_instance;
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sc->mii_phy = ma->mii_phyno;
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sc->mii_funcs = &amhphy_funcs;
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sc->mii_pdata = mii;
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sc->mii_flags = mii->mii_flags;
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sc->mii_anegticks = 5;
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PHY_RESET(sc);
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sc->mii_capabilities =
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PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
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printf("%s: ", sc->mii_dev.dv_xname);
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if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
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printf("no media present");
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else
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mii_phy_add_media(sc);
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printf("\n");
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}
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int
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amhphy_service(sc, mii, cmd)
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struct mii_softc *sc;
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struct mii_data *mii;
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int cmd;
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{
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struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
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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(ife->ifm_media) != sc->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(ife->ifm_media) != sc->mii_inst) {
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reg = PHY_READ(sc, MII_BMCR);
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PHY_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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mii_phy_setmedia(sc);
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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(ife->ifm_media) != sc->mii_inst)
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return (0);
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if (mii_phy_tick(sc) == EJUSTRETURN)
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return (0);
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break;
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case MII_DOWN:
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mii_phy_down(sc);
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return (0);
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}
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/* Update the media status. */
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mii_phy_status(sc);
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/* Callback if something changed. */
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mii_phy_update(sc, cmd);
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return (0);
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}
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void
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amhphy_status(sc)
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struct mii_softc *sc;
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{
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struct mii_data *mii = sc->mii_pdata;
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struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
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int bmsr, bmcr, ssr;
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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 = PHY_READ(sc, MII_BMSR);
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ssr = PHY_READ(sc, MII_AMHPHY_SSR);
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if (ssr & SSR_LS)
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mii->mii_media_status |= IFM_ACTIVE;
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bmcr = PHY_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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/*
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* The media status bits are only valid of autonegotiation
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* has completed (or it's disabled).
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*/
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if ((bmsr & BMSR_ACOMP) == 0) {
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/* Erg, still trying, I guess... */
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mii->mii_media_active |= IFM_NONE;
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return;
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}
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if (ssr & SSR_S) {
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/*
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* This should't really ever happen, since it's
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* a 10BASE-T only PHY. But the bit exists,
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* according to the documentation, so we pay
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* attention to it.
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*/
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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 (ssr & SSR_FD)
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mii->mii_media_active |= IFM_FDX;
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} else
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mii->mii_media_active = ife->ifm_media;
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}
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@ -0,0 +1,84 @@
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/* $NetBSD: amhphyreg.h,v 1.1 2001/08/25 04:06:26 thorpej Exp $ */
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/*
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* Copyright 2001 Wasabi Systems, Inc.
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* All rights reserved.
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*
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* Written by Jason R. Thorpe for Wasabi Systems, Inc.
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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 for the NetBSD Project by
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* Wasabi Systems, Inc.
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* 4. The name of Wasabi Systems, Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
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* 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 WASABI SYSTEMS, INC
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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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#ifndef _DEV_MII_AMHPHYREG_H_
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#define _DEV_MII_AMHPHYREG_H_
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/*
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* Registers on the 10BASE-T portion of the Am79c901 PHY.
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*/
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#define MII_AMHPHY_SER 0x10 /* status and enable register */
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#define SER_STE 0x2000 /* status test enable */
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#define SER_LSCE 0x1000 /* link status change enable */
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#define SER_DMCE 0x0800 /* duplex mode change enable */
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#define SER_ANCE 0x0400 /* auto-negotiation change enable */
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#define SER_SCE 0x0200 /* speed change enable */
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#define SER_GE 0x0100 /* global enable */
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#define SER_LSC 0x0010 /* link status change */
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#define SER_DMC 0x0008 /* duplex mode chane */
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#define SER_ANC 0x0004 /* auto-negotiation change */
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#define SER_SC 0x0002 /* speed change */
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#define SER_G 0x0001 /* global event pending */
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#define MII_AMHPHY_PCSR 0x11 /* PHY control/status register */
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#define PCSR_FLGE 0x2000 /* force link good enable */
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#define PCSR_DLP 0x1000 /* disable link pulse */
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#define PCSR_SQE_DIS 0x0800 /* SQE test disable */
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#define PCSR_JDD 0x0200 /* jabber detect disable */
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#define PCSR_RPR 0x0040 /* receive polarity reversed */
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#define PCSR_ARPCD 0x0020 /* auto receive polarity corr dis */
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#define PCSR_EDE 0x0010 /* extended distance enable */
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#define PCSR_TX_DISABLE 0x0008 /* Tx disable */
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#define PCSR_TX_CRS_EN 0x0004 /* CRS enable */
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#define PCSR_PHY_ISOLATED 0x0001 /* 10BASE-T PHY is isolated */
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#define MII_AMHPHY_MER 0x13 /* management extension register */
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#define MER_MFF 0x0020 /* management frame format error */
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#define MER_PHYADDR 0x001f /* PHY address */
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#define MII_AMHPHY_SSR 0x18 /* summary status register */
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#define SSR_LS 0x0008 /* link status */
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#define SSR_FD 0x0004 /* full-duplex */
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#define SSR_ANA 0x0002 /* autonegotiation alert */
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#define SSR_S 0x0001 /* speed (1 = 100Mb/s) */
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#endif /* _DEV_MII_AMHPHYREG_H_ */
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@ -1,4 +1,4 @@
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# $NetBSD: files.mii,v 1.27 2001/08/25 03:21:38 thorpej Exp $
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# $NetBSD: files.mii,v 1.28 2001/08/25 04:06:26 thorpej Exp $
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file dev/mii/mii.c mii
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@ -14,6 +14,10 @@ device acphy: mii_phy
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attach acphy at mii
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file dev/mii/acphy.c acphy
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device amhphy: mii_phy
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attach amhphy at mii
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file dev/mii/amhphy.c amhphy
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device bmtphy: mii_phy
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attach bmtphy at mii
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file dev/mii/bmtphy.c bmtphy
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