327 lines
8.2 KiB
C
327 lines
8.2 KiB
C
/*
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* Copyright (c) 2000,2001 Jonathan Chen.
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* 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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* without modification, immediately at the beginning of the file.
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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
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* Driver for the TDK 78Q2120 MII
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*
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* References:
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* Datasheet for the 78Q2120 - http://www.tsc.tdk.com/lan/78q2120.pdf
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* Most of this code stolen from ukphy.c
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*/
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/*
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* The TDK 78Q2120 is found on some Xircom X3201 based cardbus cards. It's just
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* like any other normal phy, except it does auto negotiation in a different
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* way.
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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/malloc.h>
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#include <sys/socket.h>
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#include <sys/errno.h>
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#include <sys/module.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 <machine/clock.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/tdkphyreg.h>
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#include "miibus_if.h"
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#if !defined(lint)
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static const char rcsid[] =
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"$Id: tdkphy.c,v 1.3 2000/10/14 06:20:56 jon Exp $";
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#endif
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static int tdkphy_probe (device_t);
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static int tdkphy_attach (device_t);
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static int tdkphy_detach (device_t);
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static device_method_t tdkphy_methods[] = {
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/* device interface */
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DEVMETHOD(device_probe, tdkphy_probe),
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DEVMETHOD(device_attach, tdkphy_attach),
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DEVMETHOD(device_detach, tdkphy_detach),
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DEVMETHOD(device_shutdown, bus_generic_shutdown),
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{ 0, 0 }
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};
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static devclass_t tdkphy_devclass;
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static driver_t tdkphy_driver = {
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"tdkphy",
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tdkphy_methods,
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sizeof(struct mii_softc)
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};
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DRIVER_MODULE(tdkphy, miibus, tdkphy_driver, tdkphy_devclass, 0, 0);
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static int tdkphy_service(struct mii_softc *, struct mii_data *, int);
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static void tdkphy_status(struct mii_softc *);
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static int
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tdkphy_probe(device_t dev)
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{
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struct mii_attach_args *ma;
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ma = device_get_ivars(dev);
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if ((MII_OUI(ma->mii_id1, ma->mii_id2) != MII_OUI_TDK ||
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MII_MODEL(ma->mii_id2) != MII_MODEL_TDK_78Q2120))
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return (ENXIO);
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device_set_desc(dev, MII_STR_TDK_78Q2120);
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return (0);
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}
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static int
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tdkphy_attach(device_t dev)
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{
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struct mii_softc *sc;
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struct mii_attach_args *ma;
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struct mii_data *mii;
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sc = device_get_softc(dev);
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ma = device_get_ivars(dev);
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sc->mii_dev = device_get_parent(dev);
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mii = device_get_softc(sc->mii_dev);
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LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
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if (bootverbose)
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device_printf(dev, "OUI 0x%06x, model 0x%04x, rev. %d\n",
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MII_OUI(ma->mii_id1, ma->mii_id2),
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MII_MODEL(ma->mii_id2), 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_service = tdkphy_service;
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sc->mii_pdata = mii;
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mii->mii_instance++;
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sc->mii_flags |= MIIF_NOISOLATE;
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#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
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ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
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BMCR_ISO);
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#if 0
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ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
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BMCR_LOOP|BMCR_S100);
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#endif
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mii_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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device_printf(dev, " ");
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mii_add_media(sc);
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printf("\n");
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#undef ADD
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MIIBUS_MEDIAINIT(sc->mii_dev);
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return(0);
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}
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static int tdkphy_detach(device_t dev)
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{
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struct mii_softc *sc;
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struct mii_data *mii;
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sc = device_get_softc(dev);
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mii = device_get_softc(device_get_parent(dev));
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mii_phy_auto_stop(sc);
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sc->mii_dev = NULL;
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LIST_REMOVE(sc, mii_list);
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return(0);
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}
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static int
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tdkphy_service(struct mii_softc *sc, struct mii_data *mii, 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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switch (IFM_SUBTYPE(ife->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 (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN)
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return (0);
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(void) mii_phy_auto(sc, 1);
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break;
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case IFM_100_T4:
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/*
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* Not supported on MII
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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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PHY_WRITE(sc, MII_ANAR,
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mii_anar(ife->ifm_media));
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PHY_WRITE(sc, MII_BMCR, ife->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(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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}
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/* Update the media status. */
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tdkphy_status(sc);
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if (sc->mii_pdata->mii_media_active & IFM_FDX)
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PHY_WRITE(sc, MII_BMCR, PHY_READ(sc, MII_BMCR) | BMCR_FDX);
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else
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PHY_WRITE(sc, MII_BMCR, PHY_READ(sc, MII_BMCR) & ~BMCR_FDX);
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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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tdkphy_status(struct mii_softc *phy)
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{
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struct mii_data *mii = phy->mii_pdata;
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int bmsr, bmcr, anlpar, diag;
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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(phy, MII_BMSR) | PHY_READ(phy, 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(phy, 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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* NWay autonegotiation takes the highest-order common
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* bit of the ANAR and ANLPAR (i.e. best media advertised
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* both by us and our link partner).
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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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anlpar = PHY_READ(phy, MII_ANAR) & PHY_READ(phy, MII_ANLPAR);
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/*
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* ANLPAR doesn't get set on my card, but we check it anyway,
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* since it is mentioned in the 78Q2120 specs.
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*/
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if (anlpar & ANLPAR_T4)
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mii->mii_media_active |= IFM_100_T4;
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else 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_TX)
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mii->mii_media_active |= IFM_100_TX;
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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;
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else {
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/*
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* ANLPAR isn't set, which leaves two possibilities:
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* 1) Auto negotiation failed
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* 2) Auto negotiation completed, but the card forgot
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* to set ANLPAR.
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* So we check the MII_DIAG(18) register...
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*/
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diag = PHY_READ(phy, MII_DIAG);
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if (diag & DIAG_NEGFAIL) /* assume 10baseT if no neg */
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mii->mii_media_active |= IFM_10_T;
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else {
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if (diag & DIAG_DUPLEX)
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mii->mii_media_active |= IFM_FDX;
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if (diag & DIAG_RATE_100)
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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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}
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}
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} else {
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mii->mii_media_active = mii_media_from_bmcr(bmcr);
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}
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}
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