407 lines
10 KiB
C
407 lines
10 KiB
C
/*
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* Copyright (c) 2000
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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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* $FreeBSD$
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*/
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/*
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* Driver for the Broadcom BCR5400 1000baseTX PHY. Speed is always
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* 1000mbps; all we need to negotiate here is full or half duplex.
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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/bus.h>
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#include <machine/clock.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/brgphyreg.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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"$FreeBSD$";
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#endif
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static int brgphy_probe __P((device_t));
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static int brgphy_attach __P((device_t));
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static int brgphy_detach __P((device_t));
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static device_method_t brgphy_methods[] = {
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/* device interface */
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DEVMETHOD(device_probe, brgphy_probe),
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DEVMETHOD(device_attach, brgphy_attach),
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DEVMETHOD(device_detach, brgphy_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 brgphy_devclass;
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static driver_t brgphy_driver = {
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"brgphy",
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brgphy_methods,
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sizeof(struct mii_softc)
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};
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DRIVER_MODULE(brgphy, miibus, brgphy_driver, brgphy_devclass, 0, 0);
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int brgphy_service __P((struct mii_softc *, struct mii_data *, int));
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void brgphy_status __P((struct mii_softc *));
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static int brgphy_mii_phy_auto __P((struct mii_softc *, int));
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extern void mii_phy_auto_timeout __P((void *));
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static int brgphy_probe(dev)
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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_xxBROADCOM ||
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MII_MODEL(ma->mii_id2) != MII_MODEL_xxBROADCOM_BCM5400)
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return(ENXIO);
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device_set_desc(dev, MII_STR_xxBROADCOM_BCM5400);
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return(0);
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}
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static int brgphy_attach(dev)
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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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const char *sep = "";
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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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sc->mii_inst = mii->mii_instance;
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sc->mii_phy = ma->mii_phyno;
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sc->mii_service = brgphy_service;
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sc->mii_pdata = mii;
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sc->mii_flags |= MIIF_NOISOLATE;
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mii->mii_instance++;
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#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
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#define PRINT(s) printf("%s%s", sep, s); sep = ", "
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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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device_printf(dev, " ");
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ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_TX, 0, sc->mii_inst),
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BRGPHY_BMCR_FDX);
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PRINT("1000baseTX");
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ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_TX, IFM_FDX, sc->mii_inst), 0);
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PRINT("1000baseTX-FDX");
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ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0);
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PRINT("auto");
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printf("\n");
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#undef ADD
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#undef PRINT
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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 brgphy_detach(dev)
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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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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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int
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brgphy_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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PHY_WRITE(sc, BRGPHY_MII_PHY_EXTCTL,
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BRGPHY_PHY_EXTCTL_HIGH_LA|BRGPHY_PHY_EXTCTL_EN_LTR);
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PHY_WRITE(sc, BRGPHY_MII_AUXCTL,
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BRGPHY_AUXCTL_LONG_PKT|BRGPHY_AUXCTL_TX_TST);
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PHY_WRITE(sc, BRGPHY_MII_IMR, 0xFF00);
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switch (IFM_SUBTYPE(ife->ifm_media)) {
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case IFM_AUTO:
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#ifdef foo
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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, BRGPHY_MII_BMCR) & BRGPHY_BMCR_AUTOEN)
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return (0);
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#endif
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(void) brgphy_mii_phy_auto(sc, 1);
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break;
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case IFM_1000_TX:
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if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) {
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PHY_WRITE(sc, BRGPHY_MII_BMCR,
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BRGPHY_BMCR_FDX|BRGPHY_BMCR_SPD1);
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} else {
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PHY_WRITE(sc, BRGPHY_MII_BMCR,
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BRGPHY_BMCR_SPD1);
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}
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PHY_WRITE(sc, BRGPHY_MII_ANAR, BRGPHY_SEL_TYPE);
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/*
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* When settning the link manually, one side must
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* be the master and the other the slave. However
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* ifmedia doesn't give us a good way to specify
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* this, so we fake it by using one of the LINK
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* flags. If LINK0 is set, we program the PHY to
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* be a master, otherwise it's a slave.
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*/
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if ((mii->mii_ifp->if_flags & IFF_LINK0)) {
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PHY_WRITE(sc, BRGPHY_MII_1000CTL,
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BRGPHY_1000CTL_MSE|BRGPHY_1000CTL_MSC);
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} else {
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PHY_WRITE(sc, BRGPHY_MII_1000CTL,
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BRGPHY_1000CTL_MSE);
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}
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break;
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case IFM_100_T4:
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case IFM_100_TX:
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case IFM_10_T:
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default:
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return (EINVAL);
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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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/*
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* Only used for autonegotiation.
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*/
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if (IFM_SUBTYPE(ife->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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* Only retry autonegotiation every 5 seconds.
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*/
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if (++sc->mii_ticks != 5)
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return (0);
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sc->mii_ticks = 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 = PHY_READ(sc, BRGPHY_MII_AUXSTS);
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if (reg & BRGPHY_AUXSTS_LINK)
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break;
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mii_phy_reset(sc);
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if (brgphy_mii_phy_auto(sc, 0) == 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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brgphy_status(sc);
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/* Callback if something changed. */
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if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) {
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MIIBUS_STATCHG(sc->mii_dev);
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sc->mii_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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brgphy_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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int bmsr, bmcr, 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, BRGPHY_MII_BMSR);
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if (PHY_READ(sc, BRGPHY_MII_AUXSTS) & BRGPHY_AUXSTS_LINK)
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mii->mii_media_status |= IFM_ACTIVE;
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bmcr = PHY_READ(sc, BRGPHY_MII_BMCR);
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if (bmcr & BRGPHY_BMCR_LOOP)
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mii->mii_media_active |= IFM_LOOP;
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if (bmcr & BRGPHY_BMCR_AUTOEN) {
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if ((bmsr & BRGPHY_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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mii->mii_media_active |= IFM_1000_TX;
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anlpar = PHY_READ(sc, BRGPHY_MII_AUXSTS);
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if ((anlpar & BRGPHY_AUXSTS_AN_RES) == BRGPHY_RES_1000FD)
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mii->mii_media_active |= IFM_FDX;
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if ((anlpar & BRGPHY_AUXSTS_AN_RES) == BRGPHY_RES_1000HD)
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mii->mii_media_active |= IFM_HDX;
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return;
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}
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mii->mii_media_active |= IFM_1000_TX;
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if (bmcr & BRGPHY_BMCR_FDX)
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mii->mii_media_active |= IFM_FDX;
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else
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mii->mii_media_active |= IFM_HDX;
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return;
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}
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static int
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brgphy_mii_phy_auto(mii, waitfor)
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struct mii_softc *mii;
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int waitfor;
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{
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int bmsr, i;
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if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) {
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PHY_WRITE(mii, BRGPHY_MII_1000CTL,
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BRGPHY_1000CTL_AFD|BRGPHY_1000CTL_AHD);
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PHY_WRITE(mii, BRGPHY_MII_ANAR, BRGPHY_SEL_TYPE);
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PHY_WRITE(mii, BRGPHY_MII_BMCR,
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BRGPHY_BMCR_AUTOEN | BRGPHY_BMCR_STARTNEG);
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PHY_WRITE(mii, BRGPHY_MII_IMR, 0xFF00);
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}
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if (waitfor) {
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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 = PHY_READ(mii, BRGPHY_MII_BMSR)) &
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BRGPHY_BMSR_ACOMP)
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return (0);
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DELAY(1000);
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#if 0
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if ((bmsr & BMSR_ACOMP) == 0)
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printf("%s: autonegotiation failed to complete\n",
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mii->mii_dev.dv_xname);
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#endif
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}
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/*
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* Don't need to worry about clearing MIIF_DOINGAUTO.
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* If that's set, a timeout is pending, and it will
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* clear the flag.
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*/
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return (EIO);
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}
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/*
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* Just let it finish asynchronously. This is for the benefit of
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* the tick handler driving autonegotiation. Don't want 500ms
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* delays all the time while the system is running!
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*/
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if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) {
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mii->mii_flags |= MIIF_DOINGAUTO;
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timeout(mii_phy_auto_timeout, mii, hz >> 1);
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}
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return (EJUSTRETURN);
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}
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