/* $OpenBSD: bmtphy.c,v 1.18 2013/12/28 03:30:40 deraadt Exp $ */ /* $NetBSD: bmtphy.c,v 1.17 2005/01/17 13:17:45 scw Exp $ */ /*- * Copyright (c) 2001 Theo de Raadt * * 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 REGENTS 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 REGENTS 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 Broadcom BCM5201/BCM5202 "Mini-Theta" PHYs. This also * drives the PHY on the 3Com 3c905C. The 3c905C's PHY is described in * the 3c905C data sheet. */ #include #include #include #include #include #include #include #include #include #include #include #include int bmtphymatch(struct device *, void *, void *); void bmtphyattach(struct device *, struct device *, void *); struct cfattach bmtphy_ca = { sizeof(struct mii_softc), bmtphymatch, bmtphyattach, mii_phy_detach }; struct cfdriver bmtphy_cd = { NULL, "bmtphy", DV_DULL }; int bmtphy_service(struct mii_softc *, struct mii_data *, int); void bmtphy_status(struct mii_softc *); void bmtphy_reset(struct mii_softc *); const struct mii_phy_funcs bmtphy_funcs = { bmtphy_service, bmtphy_status, bmtphy_reset, }; static const struct mii_phydesc bmtphys[] = { { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_3C905B, MII_STR_BROADCOM_3C905B }, { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_3C905C, MII_STR_BROADCOM_3C905C }, { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM4401, MII_STR_BROADCOM_BCM4401 }, { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM5201, MII_STR_BROADCOM_BCM5201 }, { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM5214, MII_STR_BROADCOM_BCM5214 }, { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM5220, MII_STR_BROADCOM_BCM5220 }, { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM5221, MII_STR_BROADCOM_BCM5221 }, { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM5222, MII_STR_BROADCOM_BCM5222 }, { 0, 0, NULL }, }; int bmtphymatch(struct device *parent, void *match, void *aux) { struct mii_attach_args *ma = aux; if (mii_phy_match(ma, bmtphys) != NULL) return (10); return (0); } void bmtphyattach(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, bmtphys); printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); sc->mii_model = MII_MODEL(ma->mii_id2); sc->mii_inst = mii->mii_instance; sc->mii_phy = ma->mii_phyno; sc->mii_funcs = &bmtphy_funcs; sc->mii_pdata = mii; sc->mii_flags = ma->mii_flags; sc->mii_anegticks = MII_ANEGTICKS; PHY_RESET(sc); /* * XXX Check AUX_STS_FX_MODE to set MIIF_HAVE_FIBER? */ sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; if (sc->mii_capabilities & BMSR_MEDIAMASK) mii_phy_add_media(sc); } int bmtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) { struct ifmedia_entry *ife = mii->mii_media.ifm_cur; int reg; 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 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); } void bmtphy_status(struct mii_softc *sc) { struct mii_data *mii = sc->mii_pdata; struct ifmedia_entry *ife = mii->mii_media.ifm_cur; int bmsr, bmcr, aux_csr; 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 later are only valid if autonegotiation * has completed (or it's disabled). */ if ((bmsr & BMSR_ACOMP) == 0) { /* Erg, still trying, I guess... */ mii->mii_media_active |= IFM_NONE; return; } aux_csr = PHY_READ(sc, MII_BMTPHY_AUX_CSR); if (aux_csr & AUX_CSR_SPEED) mii->mii_media_active |= IFM_100_TX; else mii->mii_media_active |= IFM_10_T; if (aux_csr & AUX_CSR_FDX) mii->mii_media_active |= mii_phy_flowstatus(sc) | IFM_FDX; else mii->mii_media_active |= IFM_HDX; } else mii->mii_media_active = ife->ifm_media; } void bmtphy_reset(struct mii_softc *sc) { u_int16_t data; mii_phy_reset(sc); if (sc->mii_model == MII_MODEL_BROADCOM_BCM5221) { /* Enable shadow register mode */ data = PHY_READ(sc, 0x1f); PHY_WRITE(sc, 0x1f, data | 0x0080); /* Enable APD (Auto PowerDetect) */ data = PHY_READ(sc, MII_BMTPHY_AUX2); PHY_WRITE(sc, MII_BMTPHY_AUX2, data | 0x0020); /* Enable clocks across APD for * Auto-MDIX functionality */ data = PHY_READ(sc, MII_BMTPHY_INTR); PHY_WRITE(sc, MII_BMTPHY_INTR, data | 0x0004); /* Disable shadow register mode */ data = PHY_READ(sc, 0x1f); PHY_WRITE(sc, 0x1f, data & ~0x0080); } }