/* $NetBSD: sqphy.c,v 1.38 2006/02/20 16:50:37 thorpej Exp $ */ /*- * 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. */ /* * driver for Seeq 80220/80221, 80223, and 80225 10/100 ethernet PHYs * datasheet from www.seeq.com */ #include __KERNEL_RCSID(0, "$NetBSD: sqphy.c,v 1.38 2006/02/20 16:50:37 thorpej Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include static int sqphymatch(struct device *, struct cfdata *, void *); static void sqphyattach(struct device *, struct device *, void *); CFATTACH_DECL(sqphy, sizeof(struct mii_softc), sqphymatch, sqphyattach, mii_phy_detach, mii_phy_activate); static int sqphy_service(struct mii_softc *, struct mii_data *, int); static void sqphy_status(struct mii_softc *); static void sqphy_84220_reset(struct mii_softc *); static const struct mii_phy_funcs sqphy_funcs = { sqphy_service, sqphy_status, mii_phy_reset, }; static const struct mii_phy_funcs sqphy_84220_funcs = { sqphy_service, sqphy_status, sqphy_84220_reset, }; static const struct mii_phydesc sqphys[] = { { MII_OUI_SEEQ, MII_MODEL_SEEQ_80220, MII_STR_SEEQ_80220 }, { MII_OUI_SEEQ, MII_MODEL_SEEQ_80225, MII_STR_SEEQ_80225 }, { MII_OUI_SEEQ, MII_MODEL_SEEQ_84220, MII_STR_SEEQ_84220 }, { 0, 0, NULL }, }; static int sqphymatch(struct device *parent, struct cfdata *match, void *aux) { struct mii_attach_args *ma = aux; if (mii_phy_match(ma, sqphys) != NULL) return (10); return (0); } static void sqphyattach(struct device *parent, struct device *self, void *aux) { struct mii_softc *sc = (struct mii_softc *)self; struct mii_attach_args *ma = aux; struct mii_data *mii = ma->mii_data; const struct mii_phydesc *mpd; mpd = mii_phy_match(ma, sqphys); aprint_naive(": Media interface\n"); aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); sc->mii_inst = mii->mii_instance; sc->mii_phy = ma->mii_phyno; sc->mii_pdata = mii; sc->mii_flags = ma->mii_flags; sc->mii_anegticks = 5; switch (MII_MODEL(ma->mii_id2)) { case MII_MODEL_SEEQ_84220: sc->mii_funcs = &sqphy_84220_funcs; aprint_normal("%s: using Seeq 84220 isolate/reset hack\n", sc->mii_dev.dv_xname); break; default: sc->mii_funcs = &sqphy_funcs; } PHY_RESET(sc); sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; aprint_normal("%s: ", sc->mii_dev.dv_xname); if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) aprint_error("no media present"); else mii_phy_add_media(sc); aprint_normal("\n"); } static int sqphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) { struct ifmedia_entry *ife = mii->mii_media.ifm_cur; int reg; if (!device_is_active(&sc->mii_dev)) return (ENXIO); 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; case MII_DOWN: mii_phy_down(sc); return (0); } /* Update the media status. */ mii_phy_status(sc); /* Callback if something changed. */ mii_phy_update(sc, cmd); return (0); } static void sqphy_status(struct mii_softc *sc) { struct mii_data *mii = sc->mii_pdata; struct ifmedia_entry *ife = mii->mii_media.ifm_cur; int bmsr, bmcr, status; 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) { if ((bmsr & BMSR_ACOMP) == 0) { /* Erg, still trying, I guess... */ mii->mii_media_active |= IFM_NONE; return; } /* * Note: don't get fancy here -- the 80225 only * supports the SPD_DET and DPLX_DET bits in * the STATUS register. */ status = PHY_READ(sc, MII_SQPHY_STATUS); if (status & STATUS_SPD_DET) mii->mii_media_active |= IFM_100_TX; else mii->mii_media_active |= IFM_10_T; if (status & STATUS_DPLX_DET) mii->mii_media_active |= IFM_FDX; } else mii->mii_media_active = ife->ifm_media; } static void sqphy_84220_reset(struct mii_softc *sc) { int reg; mii_phy_reset(sc); /* * This PHY sometimes insists on coming out of reset isolated, * even when the MDA[0-3] pins are pulled high (to indicate * PHY address 0), contrary to the device's datasheet. * * Morever, simply clearing BMCR_ISO here isn't enough; the * change won't stick until about 30mS *after* the PHY has * been reset. * * This sucks. */ while ((sc->mii_inst == 0 || (sc->mii_flags & MIIF_NOISOLATE)) && ((reg = PHY_READ(sc, MII_BMCR)) & BMCR_ISO) != 0) { delay(35000); PHY_WRITE(sc, MII_BMCR, reg & ~BMCR_ISO); delay(35000); } }