208 lines
5.6 KiB
C
208 lines
5.6 KiB
C
/*-
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* SPDX-License-Identifier: BSD-4-Clause
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*
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* Copyright (c) 1997, 1998, 1999
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* Bill Paul <wpaul@ee.columbia.edu>. 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 Bill Paul.
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* 4. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
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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
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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/*
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* driver for AMD AM79c873 PHYs
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* This driver also works for Davicom DM910{1,2} PHYs, which appear
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* to be AM79c873 workalikes.
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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/module.h>
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#include <sys/socket.h>
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#include <sys/bus.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 "miidevs.h"
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#include <dev/mii/amphyreg.h>
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#include "miibus_if.h"
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static int amphy_probe(device_t);
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static int amphy_attach(device_t);
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static device_method_t amphy_methods[] = {
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/* device interface */
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DEVMETHOD(device_probe, amphy_probe),
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DEVMETHOD(device_attach, amphy_attach),
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DEVMETHOD(device_detach, mii_phy_detach),
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DEVMETHOD(device_shutdown, bus_generic_shutdown),
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DEVMETHOD_END
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};
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static driver_t amphy_driver = {
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"amphy",
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amphy_methods,
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sizeof(struct mii_softc)
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};
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DRIVER_MODULE(amphy, miibus, amphy_driver, 0, 0);
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static int amphy_service(struct mii_softc *, struct mii_data *, int);
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static void amphy_status(struct mii_softc *);
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static const struct mii_phydesc amphys[] = {
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MII_PHY_DESC(xxDAVICOM, DM9102),
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MII_PHY_DESC(xxDAVICOM, DM9101),
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MII_PHY_DESC(yyDAVICOM, DM9101),
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MII_PHY_END
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};
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static const struct mii_phy_funcs amphy_funcs = {
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amphy_service,
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amphy_status,
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mii_phy_reset
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};
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static int
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amphy_probe(device_t dev)
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{
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return (mii_phy_dev_probe(dev, amphys, BUS_PROBE_DEFAULT));
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}
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static int
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amphy_attach(device_t dev)
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{
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mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &hy_funcs, 1);
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return (0);
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}
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static int
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amphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
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{
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switch (cmd) {
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case MII_POLLSTAT:
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break;
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case MII_MEDIACHG:
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mii_phy_setmedia(sc);
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break;
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case MII_TICK:
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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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}
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/* Update the media status. */
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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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static void
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amphy_status(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, par, anlpar;
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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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PHY_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 = 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 PAR status bits are only valid if 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 (PHY_READ(sc, MII_ANER) & ANER_LPAN) {
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anlpar = PHY_READ(sc, MII_ANAR) &
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PHY_READ(sc, MII_ANLPAR);
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if (anlpar & ANLPAR_TX_FD)
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mii->mii_media_active |= IFM_100_TX|IFM_FDX;
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else if (anlpar & ANLPAR_T4)
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mii->mii_media_active |= IFM_100_T4|IFM_HDX;
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else if (anlpar & ANLPAR_TX)
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mii->mii_media_active |= IFM_100_TX|IFM_HDX;
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else if (anlpar & ANLPAR_10_FD)
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mii->mii_media_active |= IFM_10_T|IFM_FDX;
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else if (anlpar & ANLPAR_10)
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mii->mii_media_active |= IFM_10_T|IFM_HDX;
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else
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mii->mii_media_active |= IFM_NONE;
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return;
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}
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/*
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* Link partner is not capable of autonegotiation.
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*/
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par = PHY_READ(sc, MII_AMPHY_DSCSR);
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if (par & DSCSR_100FDX)
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mii->mii_media_active |= IFM_100_TX|IFM_FDX;
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else if (par & DSCSR_100HDX)
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mii->mii_media_active |= IFM_100_TX|IFM_HDX;
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else if (par & DSCSR_10FDX)
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mii->mii_media_active |= IFM_10_T|IFM_HDX;
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else if (par & DSCSR_10HDX)
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mii->mii_media_active |= IFM_10_T|IFM_HDX;
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if ((mii->mii_media_active & IFM_FDX) != 0)
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mii->mii_media_active |= mii_phy_flowstatus(sc);
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} else
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mii->mii_media_active = ife->ifm_media;
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}
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