diff options
Diffstat (limited to 'sys/dev/mii/nsphy.c')
| -rw-r--r-- | sys/dev/mii/nsphy.c | 430 |
1 files changed, 430 insertions, 0 deletions
diff --git a/sys/dev/mii/nsphy.c b/sys/dev/mii/nsphy.c new file mode 100644 index 0000000..ac4cc7a --- /dev/null +++ b/sys/dev/mii/nsphy.c @@ -0,0 +1,430 @@ +/* $NetBSD: nsphy.c,v 1.18 1999/07/14 23:57:36 thorpej Exp $ */ + +/*- + * Copyright (c) 1998, 1999 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. + */ + +/* + * driver for National Semiconductor's DP83840A ethernet 10/100 PHY + * Data Sheet available from www.national.com + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/kernel.h> +#include <sys/malloc.h> +#include <sys/socket.h> +#include <sys/errno.h> +#include <sys/module.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/nsphyreg.h> + +#include "miibus_if.h" + +#if !defined(lint) +static const char rcsid[] = + "$Id$"; +#endif + +static int nsphy_probe __P((device_t)); +static int nsphy_attach __P((device_t)); +static int nsphy_detach __P((device_t)); + +static device_method_t nsphy_methods[] = { + /* device interface */ + DEVMETHOD(device_probe, nsphy_probe), + DEVMETHOD(device_attach, nsphy_attach), + DEVMETHOD(device_detach, nsphy_detach), + DEVMETHOD(device_shutdown, bus_generic_shutdown), + { 0, 0 } +}; + +static devclass_t nsphy_devclass; + +static driver_t nsphy_driver = { + "nsphy", + nsphy_methods, + sizeof(struct mii_softc) +}; + +DRIVER_MODULE(nsphy, miibus, nsphy_driver, nsphy_devclass, 0, 0); + +int nsphy_service __P((struct mii_softc *, struct mii_data *, int)); +void nsphy_status __P((struct mii_softc *)); + +static int nsphy_probe(dev) + device_t dev; +{ + struct mii_attach_args *ma; + + ma = device_get_ivars(dev); + + if (MII_OUI(ma->mii_id1, ma->mii_id2) != MII_OUI_NATSEMI || + MII_MODEL(ma->mii_id2) != MII_MODEL_NATSEMI_DP83840) + return (ENXIO); + + device_set_desc(dev, MII_STR_NATSEMI_DP83840); + + return (0); +} + +static int nsphy_attach(dev) + 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 = nsphy_service; + sc->mii_pdata = mii; + +#ifdef foo + /* + * i82557 wedges if all of its PHYs are isolated! + */ + if (strcmp(device_get_name(device_get_parent(sc->mii_dev)), + "fxp") == 0 && mii->mii_instance == 0) +#endif + + sc->mii_flags |= MIIF_NOISOLATE; + mii->mii_instance++; + +#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) + +#if 0 + /* Can't do this on the i82557! */ + ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), + BMCR_ISO); +#endif + ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), + BMCR_LOOP|BMCR_S100); + + mii_phy_reset(sc); + + 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_add_media(mii, sc->mii_capabilities, + sc->mii_inst); + printf("\n"); +#undef ADD + + MIIBUS_MEDIAINIT(sc->mii_dev); + return(0); +} + +static int nsphy_detach(dev) + device_t dev; +{ + struct mii_softc *sc; + struct mii_data *mii; + + sc = device_get_softc(dev); + mii = device_get_softc(device_get_parent(dev)); + sc->mii_dev = NULL; + LIST_REMOVE(sc, mii_list); + + return(0); +} + +int +nsphy_service(sc, mii, cmd) + 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: + /* + * 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; + + reg = PHY_READ(sc, MII_NSPHY_PCR); + + /* + * Set up the PCR to use LED4 to indicate full-duplex + * in both 10baseT and 100baseTX modes. + */ + reg |= PCR_LED4MODE; + + /* + * Make sure Carrier Intgrity Monitor function is + * disabled (normal for Node operation, but sometimes + * it's not set?!) + */ + reg |= PCR_CIMDIS; + + /* + * Make sure "force link good" is set to normal mode. + * It's only intended for debugging. + */ + reg |= PCR_FLINK100; + +#if 0 + /* + * Mystery bits which are supposedly `reserved', + * but we seem to need to set them when the PHY + * is connected to some interfaces! + */ + reg |= 0x0100 | 0x0400; +#endif +/* + PHY_WRITE(sc, MII_NSPHY_PCR, reg); +*/ + switch (IFM_SUBTYPE(ife->ifm_media)) { + case IFM_AUTO: + /* + * If we're already in auto mode, just return. + */ + if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) + return (0); + (void) mii_phy_auto(sc, 1); + break; + case IFM_100_T4: + /* + * XXX Not supported as a manual setting right now. + */ + return (EINVAL); + default: + /* + * BMCR data is stored in the ifmedia entry. + */ + PHY_WRITE(sc, MII_ANAR, + mii_anar(ife->ifm_media)); + PHY_WRITE(sc, MII_BMCR, ife->ifm_data); + } + break; + + case MII_TICK: + /* + * If we're not currently selected, just return. + */ + if (IFM_INST(ife->ifm_media) != sc->mii_inst) + return (0); + + /* + * Only used for autonegotiation. + */ + if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) + return (0); + + /* + * Is the interface even up? + */ + if ((mii->mii_ifp->if_flags & IFF_UP) == 0) + return (0); + + /* + * Check to see if we have link. If we do, we don't + * need to restart the autonegotiation process. Read + * the BMSR twice in case it's latched. + */ + reg = PHY_READ(sc, MII_BMSR) | + PHY_READ(sc, MII_BMSR); + if (reg & BMSR_LINK) + return (0); + + /* + * Only retry autonegotiation every 5 seconds. + */ + if (++sc->mii_ticks != 5) + return (0); + + sc->mii_ticks = 0; + mii_phy_reset(sc); + if (mii_phy_auto(sc, 0) == EJUSTRETURN) + return (0); + break; + } + + /* Update the media status. */ + nsphy_status(sc); + + /* Callback if something changed. */ + if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { + MIIBUS_STATCHG(sc->mii_dev); + sc->mii_active = mii->mii_media_active; + } + return (0); +} + +void +nsphy_status(sc) + struct mii_softc *sc; +{ + struct mii_data *mii = sc->mii_pdata; + int bmsr, bmcr, par, anlpar; + + mii->mii_media_status = IFM_AVALID; + mii->mii_media_active = IFM_ETHER; + + bmsr = PHY_READ(sc, MII_BMSR) | + PHY_READ(sc, MII_BMSR); + 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 PAR status bits are only valid of autonegotiation + * has completed (or it's disabled). + */ + if ((bmsr & BMSR_ACOMP) == 0) { + /* Erg, still trying, I guess... */ + mii->mii_media_active |= IFM_NONE; + return; + } + + /* + * Argh. The PAR doesn't seem to indicate duplex mode + * properly! Determine media based on link partner's + * advertised capabilities. + */ + if (PHY_READ(sc, MII_ANER) & ANER_LPAN) { + anlpar = PHY_READ(sc, MII_ANAR) & + PHY_READ(sc, MII_ANLPAR); + if (anlpar & ANLPAR_T4) + mii->mii_media_active |= IFM_100_T4; + else if (anlpar & ANLPAR_TX_FD) + mii->mii_media_active |= IFM_100_TX|IFM_FDX; + else if (anlpar & ANLPAR_TX) + mii->mii_media_active |= IFM_100_TX; + else if (anlpar & ANLPAR_10_FD) + mii->mii_media_active |= IFM_10_T|IFM_FDX; + else if (anlpar & ANLPAR_10) + mii->mii_media_active |= IFM_10_T; + else + mii->mii_media_active |= IFM_NONE; + return; + } + + /* + * Link partner is not capable of autonegotiation. + * We will never be in full-duplex mode if this is + * the case, so reading the PAR is OK. + */ + par = PHY_READ(sc, MII_NSPHY_PAR); + if (par & PAR_10) + mii->mii_media_active |= IFM_10_T; + else + mii->mii_media_active |= IFM_100_TX; +#if 0 + if (par & PAR_FDX) + mii->mii_media_active |= IFM_FDX; +#endif + } else + mii->mii_media_active = mii_media_from_bmcr(bmcr); +} |
