/* $OpenBSD: urlphy.c,v 1.6 2004/09/29 09:51:07 dlg Exp $ */ /* $NetBSD: urlphy.c,v 1.1 2002/03/28 21:07:53 ichiro Exp $ */ /* * Copyright (c) 2001, 2002 * Shingo WATANABE . 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. Neither the name of the author nor the names of any co-contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * 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. * */ /* * driver for Realtek RL8150L internal phy */ #include #include #include #include #include #include #include #include #include #include #include #define URLPHY_DEBUG 0 #ifdef URLPHY_DEBUG #define DPRINTF(x) if (urlphydebug) printf x #define DPRINTFN(n,x) if (urlphydebug>(n)) printf x int urlphydebug = URLPHY_DEBUG; #else #define DPRINTF(x) #define DPRINTFN(n,x) #endif int urlphy_match(struct device *, void *, void *); void urlphy_attach(struct device *, struct device *, void *); struct cfattach urlphy_ca = { sizeof(struct mii_softc), urlphy_match, urlphy_attach, mii_phy_detach, mii_phy_activate }; struct cfdriver urlphy_cd = { NULL, "urlphy", DV_DULL }; int urlphy_service(struct mii_softc *, struct mii_data *, int); void urlphy_status(struct mii_softc *); const struct mii_phy_funcs urlphy_funcs = { urlphy_service, urlphy_status, mii_phy_reset, }; int urlphy_match(struct device *parent, void *match, void *aux) { struct mii_attach_args *ma = aux; /* * RTL8150 reports OUT == 0, MODEL == 0 */ if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 && MII_MODEL(ma->mii_id2) != 0) return (0); /* * Make sure the parent is an 'url' device. */ if (strcmp(parent->dv_cfdata->cf_driver->cd_name, "url") != 0) return(0); return (10); } void urlphy_attach(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; DPRINTF(("%s: %s: enter\n", sc->mii_dev.dv_xname, __func__)); sc->mii_inst = mii->mii_instance; sc->mii_phy = ma->mii_phyno; sc->mii_funcs = &urlphy_funcs; sc->mii_pdata = mii; sc->mii_flags = mii->mii_flags; sc->mii_anegticks = 10; /* Don't do loopback on this PHY. */ sc->mii_flags |= MIIF_NOLOOP; /* Don't do isolate on this PHY. */ sc->mii_flags |= MIIF_NOISOLATE; if (mii->mii_instance != 0) { printf("%s: ignoring this PHY, non-zero instance\n", sc->mii_dev.dv_xname); return; } PHY_RESET(sc); sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; if (sc->mii_capabilities & BMSR_MEDIAMASK) mii_phy_add_media(sc); } int urlphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) { struct ifmedia_entry *ife = mii->mii_media.ifm_cur; int reg; DPRINTF(("%s: %s: enter\n", sc->mii_dev.dv_xname, __func__)); if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 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 we're not currently selected, just return. */ if (IFM_INST(ife->ifm_media) != sc->mii_inst) 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); /* Just bail now if the interface is down. */ if ((mii->mii_ifp->if_flags & IFF_UP) == 0) return (0); /* * If we're not doing autonegotiation, we don't need to do * any extra work here. However, we need to check the link * status so we can generate an announcement if the status * changes. */ if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) return (0); /* Read the status register twice; MSR_LINK is latch-low. */ reg = PHY_READ(sc, URLPHY_MSR) | PHY_READ(sc, URLPHY_MSR); if (reg & URLPHY_MSR_LINK) return (0); /* * Only retry autonegotiation every N seconds. */ KASSERT(sc->mii_anegticks != 0); if (++sc->mii_ticks != sc->mii_anegticks) return (0); sc->mii_ticks = 0; PHY_RESET(sc); if (mii_phy_auto(sc, 0) == 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); } void urlphy_status(struct mii_softc *sc) { struct mii_data *mii = sc->mii_pdata; struct ifmedia_entry *ife = mii->mii_media.ifm_cur; int msr, bmsr, bmcr; DPRINTF(("%s: %s: enter\n", sc->mii_dev.dv_xname, __func__)); mii->mii_media_status = IFM_AVALID; mii->mii_media_active = IFM_ETHER; /* * The link status bit is not exist in the BMSR register, * so we need to read the MSR register to get link status. */ msr = PHY_READ(sc, URLPHY_MSR) | PHY_READ(sc, URLPHY_MSR); if (msr & URLPHY_MSR_LINK) mii->mii_media_status |= IFM_ACTIVE; DPRINTF(("%s: %s: link %s\n", sc->mii_dev.dv_xname, __func__, mii->mii_media_status & IFM_ACTIVE ? "up" : "down")); bmcr = PHY_READ(sc, MII_BMCR); if (bmcr & BMCR_AUTOEN) { bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); if ((bmsr & BMSR_ACOMP) == 0) { /* Erg, still trying, I guess... */ mii->mii_media_active |= IFM_NONE; return; } if (msr & URLPHY_MSR_SPEED_100) mii->mii_media_active |= IFM_100_TX; else mii->mii_media_active |= IFM_10_T; if (msr & URLPHY_MSR_DUPLEX) mii->mii_media_active |= IFM_FDX; } else mii->mii_media_active = ife->ifm_media; }