/* $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. * * $FreeBSD: src/sys/dev/mii/nsphy.c,v 1.2.2.5 2001/06/08 19:58:33 semenu Exp $ */ /* * 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/socket.h> #include <sys/errno.h> #include <sys/module.h> #include <sys/bus.h> #include <net/if.h> #include <net/if_var.h> #include <net/if_media.h> #include "mii.h" #include "miivar.h" #include "miidevs.h" #include "nsphyreg.h" #include "miibus_if.h" static int nsphy_probe (device_t); static int nsphy_attach (device_t); static device_method_t nsphy_methods[] = { /* device interface */ DEVMETHOD(device_probe, nsphy_probe), DEVMETHOD(device_attach, nsphy_attach), DEVMETHOD(device_detach, ukphy_detach), DEVMETHOD(device_shutdown, bus_generic_shutdown), DEVMETHOD_END }; static const struct mii_phydesc nsphys[] = { MII_PHYDESC(NATSEMI, DP83840), MII_PHYDESC_NULL }; 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, NULL, NULL); static int nsphy_service(struct mii_softc *, struct mii_data *, int); static void nsphy_status(struct mii_softc *); static void nsphy_reset(struct mii_softc *); static int nsphy_probe(device_t dev) { struct mii_attach_args *ma = device_get_ivars(dev); const struct mii_phydesc *mpd; mpd = mii_phy_match(ma, nsphys); if (mpd != NULL) { device_set_desc(dev, mpd->mpd_name); return (0); } return (ENXIO); } static int nsphy_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); mii_softc_init(sc, ma); 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_service = nsphy_service; sc->mii_reset = nsphy_reset; 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), MII_MEDIA_100_TX); nsphy_reset(sc); sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; device_printf(dev, " "); if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) kprintf("no media present"); else mii_phy_add_media(sc); kprintf("\n"); #undef ADD MIIBUS_MEDIAINIT(sc->mii_dev); return(0); } static int nsphy_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: /* * 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; /* * Mystery bits which are supposedly `reserved', * but we seem to need to set them when the PHY * is connected to some interfaces: * * 0x0400 is needed for fxp * (Intel EtherExpress Pro 10+/100B, 82557 chip) * (nsphy with a DP83840 chip) * 0x0100 may be needed for some other card */ reg |= PCR_CONGCTRL | PCR_TXREADYSEL; if (strcmp(device_get_name(device_get_parent(sc->mii_dev)), "fxp") == 0) PHY_WRITE(sc, MII_NSPHY_PCR, reg); mii_phy_set_media(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. */ nsphy_status(sc); /* Callback if something changed. */ mii_phy_update(sc, cmd); return (0); } static void nsphy_status(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->mii_media.ifm_cur->ifm_media; } static void nsphy_reset(struct mii_softc *sc) { int anar; mii_phy_reset(sc); anar = PHY_READ(sc, MII_ANAR); anar |= BMSR_MEDIA_TO_ANAR(PHY_READ(sc, MII_BMSR)); PHY_WRITE(sc, MII_ANAR, anar); }
