diff options
Diffstat (limited to 'sys/dev/usb/net/ruephy.c')
| -rw-r--r-- | sys/dev/usb/net/ruephy.c | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/sys/dev/usb/net/ruephy.c b/sys/dev/usb/net/ruephy.c new file mode 100644 index 0000000..64150a5 --- /dev/null +++ b/sys/dev/usb/net/ruephy.c @@ -0,0 +1,232 @@ +/*- + * Copyright (c) 2001-2003, Shunsuke Akiyama <akiyama@FreeBSD.org>. + * 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. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. + * + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +/* + * driver for RealTek RTL8150 internal PHY + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/kernel.h> +#include <sys/malloc.h> +#include <sys/module.h> +#include <sys/socket.h> +#include <sys/bus.h> + +#include <net/if.h> +#include <net/if_arp.h> +#include <net/if_media.h> + +#include <dev/mii/mii.h> +#include <dev/mii/miivar.h> +#include "miidevs.h" + +#include <dev/usb/net/ruephyreg.h> + +#include "miibus_if.h" + +static int ruephy_probe(device_t); +static int ruephy_attach(device_t); + +static device_method_t ruephy_methods[] = { + /* device interface */ + DEVMETHOD(device_probe, ruephy_probe), + DEVMETHOD(device_attach, ruephy_attach), + DEVMETHOD(device_detach, mii_phy_detach), + DEVMETHOD(device_shutdown, bus_generic_shutdown), + { 0, 0 } +}; + +static devclass_t ruephy_devclass; + +static driver_t ruephy_driver = { + "ruephy", + ruephy_methods, + sizeof(struct mii_softc) +}; + +DRIVER_MODULE(ruephy, miibus, ruephy_driver, ruephy_devclass, 0, 0); + +static int ruephy_service(struct mii_softc *, struct mii_data *, int); +static void ruephy_reset(struct mii_softc *); +static void ruephy_status(struct mii_softc *); + +/* + * The RealTek RTL8150 internal PHY doesn't have vendor/device ID + * registers; rue(4) fakes up a return value of all zeros. + */ +static const struct mii_phydesc ruephys[] = { + { 0, 0, "RealTek RTL8150 internal media interface" }, + MII_PHY_END +}; + +static const struct mii_phy_funcs ruephy_funcs = { + ruephy_service, + ruephy_status, + ruephy_reset +}; + +static int +ruephy_probe(device_t dev) +{ + + if (strcmp(device_get_name(device_get_parent(device_get_parent(dev))), + "rue") == 0) + return (mii_phy_dev_probe(dev, ruephys, BUS_PROBE_DEFAULT)); + return (ENXIO); +} + +static int +ruephy_attach(device_t dev) +{ + + mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE, + &ruephy_funcs, 1); + return (0); +} + +static int +ruephy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) +{ + struct ifmedia_entry *ife = mii->mii_media.ifm_cur; + int reg; + + switch (cmd) { + case MII_POLLSTAT: + break; + + case MII_MEDIACHG: + /* + * 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: + /* + * Is the interface even up? + */ + if ((mii->mii_ifp->if_flags & IFF_UP) == 0) + return (0); + + /* + * Only used for autonegotiation. + */ + if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) + break; + + /* + * Check to see if we have link. If we do, we don't + * need to restart the autonegotiation process. Read + * the MSR twice in case it's latched. + */ + reg = PHY_READ(sc, RUEPHY_MII_MSR) | + PHY_READ(sc, RUEPHY_MII_MSR); + if (reg & RUEPHY_MSR_LINK) + break; + + /* Only retry autonegotiation every mii_anegticks seconds. */ + if (sc->mii_ticks <= sc->mii_anegticks) + break; + + sc->mii_ticks = 0; + PHY_RESET(sc); + if (mii_phy_auto(sc) == EJUSTRETURN) + return (0); + break; + } + + /* Update the media status. */ + PHY_STATUS(sc); + + /* Callback if something changed. */ + mii_phy_update(sc, cmd); + + return (0); +} + +static void +ruephy_reset(struct mii_softc *sc) +{ + + mii_phy_reset(sc); + + /* + * XXX RealTek RTL8150 PHY doesn't set the BMCR properly after + * XXX reset, which breaks autonegotiation. + */ + PHY_WRITE(sc, MII_BMCR, (BMCR_S100 | BMCR_AUTOEN | BMCR_FDX)); +} + +static void +ruephy_status(struct mii_softc *phy) +{ + struct mii_data *mii = phy->mii_pdata; + struct ifmedia_entry *ife = mii->mii_media.ifm_cur; + int bmsr, bmcr, msr; + + mii->mii_media_status = IFM_AVALID; + mii->mii_media_active = IFM_ETHER; + + msr = PHY_READ(phy, RUEPHY_MII_MSR) | PHY_READ(phy, RUEPHY_MII_MSR); + if (msr & RUEPHY_MSR_LINK) + mii->mii_media_status |= IFM_ACTIVE; + + bmcr = PHY_READ(phy, MII_BMCR); + if (bmcr & BMCR_ISO) { + mii->mii_media_active |= IFM_NONE; + mii->mii_media_status = 0; + return; + } + + bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR); + if (bmcr & BMCR_AUTOEN) { + if ((bmsr & BMSR_ACOMP) == 0) { + /* Erg, still trying, I guess... */ + mii->mii_media_active |= IFM_NONE; + return; + } + + if (msr & RUEPHY_MSR_SPEED100) + mii->mii_media_active |= IFM_100_TX; + else + mii->mii_media_active |= IFM_10_T; + + if (msr & RUEPHY_MSR_DUPLEX) + mii->mii_media_active |= + IFM_FDX | mii_phy_flowstatus(phy); + else + mii->mii_media_active |= IFM_HDX; + } else + mii->mii_media_active = ife->ifm_media; +} |
