diff options
Diffstat (limited to 'sys/dev/mii/bmtphy.c')
| -rw-r--r-- | sys/dev/mii/bmtphy.c | 298 |
1 files changed, 298 insertions, 0 deletions
diff --git a/sys/dev/mii/bmtphy.c b/sys/dev/mii/bmtphy.c new file mode 100644 index 0000000..bcf2895 --- /dev/null +++ b/sys/dev/mii/bmtphy.c @@ -0,0 +1,298 @@ +/* + * Copyright (c) 1998, 1999, 2000, 2001 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, + * NASA Ames Research Center. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the NetBSD + * Foundation, Inc. and its contributors. + * 4. Neither the name of The NetBSD Foundation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* + * Copyright (c) 1997 Manuel Bouyer. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Manuel Bouyer. + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * from: NetBSD: bmtphy.c,v 1.8 2002/07/03 06:25:50 simonb Exp + * + * $FreeBSD$ + */ + +/* + * Driver for the Broadcom BCM5201/BCM5202 "Mini-Theta" PHYs. This also + * drives the PHY on the 3Com 3c905C. The 3c905C's PHY is described in + * the 3c905C data sheet. + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/kernel.h> +#include <sys/malloc.h> +#include <sys/socket.h> +#include <sys/bus.h> + +#include <net/if.h> +#include <net/if_media.h> + +#include <dev/mii/mii.h> +#include <dev/mii/miivar.h> +#include <dev/mii/miidevs.h> + +#include <dev/mii/bmtphyreg.h> + +#include "miibus_if.h" + +static int bmtphy_probe(device_t); +static int bmtphy_attach(device_t); + +static device_method_t bmtphy_methods[] = { + /* Device interface */ + DEVMETHOD(device_probe, bmtphy_probe), + DEVMETHOD(device_attach, bmtphy_attach), + DEVMETHOD(device_detach, mii_phy_detach), + DEVMETHOD(device_shutdown, bus_generic_shutdown), + + { 0, 0 } +}; + +static devclass_t bmtphy_devclass; + +static driver_t bmtphy_driver = { + "bmtphy", + bmtphy_methods, + sizeof(struct mii_softc) +}; + +DRIVER_MODULE(bmtphy, miibus, bmtphy_driver, bmtphy_devclass, 0, 0); + +static int bmtphy_service(struct mii_softc *, struct mii_data *, int); +static void bmtphy_status(struct mii_softc *); + +static int +bmtphy_probe(device_t dev) +{ + struct mii_attach_args *ma; + int rval; + + ma = device_get_ivars(dev); + rval = 0; + + if (MII_OUI(ma->mii_id1, ma->mii_id2) != MII_OUI_BROADCOM) + return (ENXIO); + + switch (MII_MODEL(ma->mii_id2)) { + case MII_MODEL_BROADCOM_3C905B: + device_set_desc(dev, MII_STR_BROADCOM_3C905B); + rval = -10; /* Let exphy take precedence. */ + break; + case MII_MODEL_BROADCOM_3C905C: + device_set_desc(dev, MII_STR_BROADCOM_3C905C); + rval = -10; /* Let exphy take precedence. */ + break; + case MII_MODEL_BROADCOM_BCM5201: + device_set_desc(dev, MII_STR_BROADCOM_BCM5201); + break; + case MII_MODEL_BROADCOM_BCM5221: + device_set_desc(dev, MII_STR_BROADCOM_BCM5221); + break; + default: + return (ENXIO); + break; + } + + return (rval); +} + +static int +bmtphy_attach(device_t dev) +{ + struct mii_softc *sc; + struct mii_attach_args *ma; + struct mii_data *mii; + + sc = device_get_softc(dev); + ma = device_get_ivars(dev); + sc->mii_dev = device_get_parent(dev); + mii = device_get_softc(sc->mii_dev); + LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); + + sc->mii_inst = mii->mii_instance; + sc->mii_phy = ma->mii_phyno; + sc->mii_service = bmtphy_service; + sc->mii_pdata = mii; + + mii_phy_reset(sc); + + mii->mii_instance++; + + sc->mii_capabilities = + PHY_READ(sc, MII_BMSR) & ma->mii_capmask; + device_printf(dev, " "); + if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) + printf("no media present"); + else + mii_phy_add_media(sc); + + printf("\n"); + + MIIBUS_MEDIAINIT(sc->mii_dev); + + return (0); +} + +static int +bmtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) +{ + struct ifmedia_entry *ife; + int reg; + + ife = mii->mii_media.ifm_cur; + + switch (cmd) { + case MII_POLLSTAT: + /* + * If we're not polling our PHY instance, just return. + */ + if (IFM_INST(ife->ifm_media) != sc->mii_inst) + return (0); + break; + + case MII_MEDIACHG: + /* + * If the media indicates a different PHY instance, + * isolate ourselves. + */ + if (IFM_INST(ife->ifm_media) != sc->mii_inst) { + reg = PHY_READ(sc, MII_BMCR); + PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); + return (0); + } + + /* + * If the interface is not up, don't do anything. + */ + if ((mii->mii_ifp->if_flags & IFF_UP) == 0) + break; + + mii_phy_setmedia(sc); + break; + + case MII_TICK: + /* + * If we're not currently selected, just return. + */ + if (IFM_INST(ife->ifm_media) != sc->mii_inst) + return (0); + if (mii_phy_tick(sc) == EJUSTRETURN) + return (0); + break; + } + + /* Update the media status. */ + bmtphy_status(sc); + + /* Callback if something changed. */ + mii_phy_update(sc, cmd); + + return (0); +} + +static void +bmtphy_status(struct mii_softc *sc) +{ + struct mii_data *mii; + struct ifmedia_entry *ife; + int bmsr, bmcr, aux_csr; + + mii = sc->mii_pdata; + ife = mii->mii_media.ifm_cur; + + mii->mii_media_status = IFM_AVALID; + mii->mii_media_active = IFM_ETHER; + + bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); + aux_csr = PHY_READ(sc, MII_BMTPHY_AUX_CSR); + + if (bmsr & BMSR_LINK) + mii->mii_media_status |= IFM_ACTIVE; + + bmcr = PHY_READ(sc, MII_BMCR); + if (bmcr & BMCR_ISO) { + mii->mii_media_active |= IFM_NONE; + mii->mii_media_status = 0; + return; + } + + if (bmcr & BMCR_LOOP) + mii->mii_media_active |= IFM_LOOP; + + if (bmcr & BMCR_AUTOEN) { + /* + * The media status bits are only valid if autonegotiation + * has completed (or it's disabled). + */ + if ((bmsr & BMSR_ACOMP) == 0) { + /* Erg, still trying, I guess... */ + mii->mii_media_active |= IFM_NONE; + return; + } + + if (aux_csr & AUX_CSR_SPEED) + mii->mii_media_active |= IFM_100_TX; + else + mii->mii_media_active |= IFM_10_T; + if (aux_csr & AUX_CSR_FDX) + mii->mii_media_active |= IFM_FDX; + } else + mii->mii_media_active = ife->ifm_media; +} |
