/* $OpenBSD: brgphy.c,v 1.7 2001/10/05 18:30:54 nate Exp $ */ /* * Copyright (c) 2000 * Bill Paul . 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 Bill Paul. * 4. 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 Bill Paul 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 Bill Paul OR THE VOICES IN HIS HEAD * 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/brgphy.c,v 1.5 2001/09/18 00:31:19 wpaul Exp $ */ /* * Driver for the Broadcom BCR5400 1000baseTX PHY. Speed is always * 1000mbps; all we need to negotiate here is full or half duplex. */ #include #include #include #include #include #include #include #include #include #include #include #include #include int brgphy_probe __P((struct device *, void *, void *)); void brgphy_attach __P((struct device *, struct device *, void *)); struct cfattach brgphy_ca = { sizeof(struct mii_softc), brgphy_probe, brgphy_attach, mii_phy_detach, mii_phy_activate }; struct cfdriver brgphy_cd = { NULL, "brgphy", DV_DULL }; int brgphy_service __P((struct mii_softc *, struct mii_data *, int)); void brgphy_status __P((struct mii_softc *)); int brgphy_mii_phy_auto __P((struct mii_softc *, int)); extern void mii_phy_auto_timeout __P((void *)); int brgphy_probe(parent, match, aux) struct device *parent; void *match, *aux; { struct mii_attach_args *ma = aux; if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxBROADCOM && (MII_MODEL(ma->mii_id2) == MII_MODEL_xxBROADCOM_BCM5400 || MII_MODEL(ma->mii_id2) == MII_MODEL_BROADCOM_BCM5400 || MII_MODEL(ma->mii_id2) == MII_MODEL_BROADCOM_BCM5401 || MII_MODEL(ma->mii_id2) == MII_MODEL_BROADCOM_BCM5411)) return(10); return(0); } void brgphy_attach(parent, self, aux) struct device *parent, *self; void *aux; { struct mii_softc *sc = (struct mii_softc *)self; struct mii_attach_args *ma = aux; struct mii_data *mii = ma->mii_data; char *model; if (MII_MODEL(ma->mii_id2) == MII_MODEL_xxBROADCOM_BCM5400 || MII_MODEL(ma->mii_id2) == MII_MODEL_BROADCOM_BCM5400) model = MII_STR_BROADCOM_BCM5400; if (MII_MODEL(ma->mii_id2) == MII_MODEL_BROADCOM_BCM5401) model = MII_STR_BROADCOM_BCM5401; if (MII_MODEL(ma->mii_id2) == MII_MODEL_BROADCOM_BCM5411) model = MII_STR_BROADCOM_BCM5411; printf(": %s, rev. %d\n", model, MII_REV(ma->mii_id2)); sc->mii_inst = mii->mii_instance; sc->mii_phy = ma->mii_phyno; sc->mii_service = brgphy_service; sc->mii_status = brgphy_status; sc->mii_pdata = mii; sc->mii_flags |= MIIF_NOISOLATE; sc->mii_anegticks = 10; mii_phy_reset(sc); sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; if (sc->mii_capabilities & BMSR_EXTSTAT) sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); if ((sc->mii_capabilities & BMSR_MEDIAMASK) || (sc->mii_extcapabilities & EXTSR_MEDIAMASK)) mii_phy_add_media(sc); } int brgphy_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, speed; 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; PHY_WRITE(sc, BRGPHY_MII_PHY_EXTCTL, BRGPHY_PHY_EXTCTL_HIGH_LA|BRGPHY_PHY_EXTCTL_EN_LTR); PHY_WRITE(sc, BRGPHY_MII_AUXCTL, BRGPHY_AUXCTL_LONG_PKT|BRGPHY_AUXCTL_TX_TST); PHY_WRITE(sc, BRGPHY_MII_IMR, 0xFF00); switch (IFM_SUBTYPE(ife->ifm_media)) { case IFM_AUTO: #ifdef foo /* * If we're already in auto mode, just return. */ if (PHY_READ(sc, BRGPHY_MII_BMCR) & BRGPHY_BMCR_AUTOEN) return (0); #endif (void) brgphy_mii_phy_auto(sc, 1); break; case IFM_1000_TX: speed = BRGPHY_S1000; goto setit; case IFM_100_T4: speed = BRGPHY_S100; goto setit; case IFM_100_TX: speed = BRGPHY_S100; goto setit; case IFM_10_T: speed = BRGPHY_S10; setit: if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) { PHY_WRITE(sc, BRGPHY_MII_BMCR, BRGPHY_BMCR_FDX|speed); } else { PHY_WRITE(sc, BRGPHY_MII_BMCR, speed); } PHY_WRITE(sc, BRGPHY_MII_ANAR, BRGPHY_SEL_TYPE); if (IFM_SUBTYPE(ife->ifm_media) != IFM_1000_TX) break; /* * On IFM_1000_X only, * when setting the link manually, one side must * be the master and the other the slave. However * ifmedia doesn't give us a good way to specify * this, so we fake it by using one of the LINK * flags. If LINK0 is set, we program the PHY to * be a master, otherwise it's a slave. */ if ((mii->mii_ifp->if_flags & IFF_LINK0)) { PHY_WRITE(sc, BRGPHY_MII_1000CTL, BRGPHY_1000CTL_MSE|BRGPHY_1000CTL_MSC); } else { PHY_WRITE(sc, BRGPHY_MII_1000CTL, BRGPHY_1000CTL_MSE); } break; default: return (EINVAL); } 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); /* * Only retry autonegotiation every 5 seconds. */ if (++sc->mii_ticks != sc->mii_anegticks) return (0); sc->mii_ticks = 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, BRGPHY_MII_AUXSTS); if (reg & BRGPHY_AUXSTS_LINK) break; mii_phy_reset(sc); if (brgphy_mii_phy_auto(sc, 0) == EJUSTRETURN) return(0); break; } /* Update the media status. */ brgphy_status(sc); /* Callback if something changed. */ mii_phy_update(sc, cmd); return (0); } void brgphy_status(sc) struct mii_softc *sc; { struct mii_data *mii = sc->mii_pdata; struct ifmedia_entry *ife = mii->mii_media.ifm_cur; int bmsr, bmcr; mii->mii_media_status = IFM_AVALID; mii->mii_media_active = IFM_ETHER; bmsr = PHY_READ(sc, BRGPHY_MII_BMSR); if (PHY_READ(sc, BRGPHY_MII_AUXSTS) & BRGPHY_AUXSTS_LINK) mii->mii_media_status |= IFM_ACTIVE; bmcr = PHY_READ(sc, BRGPHY_MII_BMCR); if (bmcr & BRGPHY_BMCR_LOOP) mii->mii_media_active |= IFM_LOOP; if (bmcr & BRGPHY_BMCR_AUTOEN) { if ((bmsr & BRGPHY_BMSR_ACOMP) == 0) { /* Erg, still trying, I guess... */ mii->mii_media_active |= IFM_NONE; return; } switch (PHY_READ(sc, BRGPHY_MII_AUXSTS) & BRGPHY_AUXSTS_AN_RES) { case BRGPHY_RES_1000FD: mii->mii_media_active |= IFM_1000_TX | IFM_FDX; break; case BRGPHY_RES_1000HD: mii->mii_media_active |= IFM_1000_TX | IFM_HDX; break; case BRGPHY_RES_100FD: mii->mii_media_active |= IFM_100_TX | IFM_FDX; break; case BRGPHY_RES_100T4: mii->mii_media_active |= IFM_100_T4; break; case BRGPHY_RES_100HD: mii->mii_media_active |= IFM_100_TX | IFM_HDX; break; case BRGPHY_RES_10FD: mii->mii_media_active |= IFM_10_T | IFM_FDX; break; case BRGPHY_RES_10HD: mii->mii_media_active |= IFM_10_T | IFM_HDX; break; } return; } mii->mii_media_active = ife->ifm_media; } int brgphy_mii_phy_auto(mii, waitfor) struct mii_softc *mii; int waitfor; { int bmsr, ktcr = 0, i; if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { mii_phy_reset(mii); PHY_WRITE(mii, BRGPHY_MII_BMCR, 0); DELAY(1000); ktcr = PHY_READ(mii, BRGPHY_MII_1000CTL); PHY_WRITE(mii, BRGPHY_MII_1000CTL, ktcr | BRGPHY_1000CTL_AFD|BRGPHY_1000CTL_AHD); ktcr = PHY_READ(mii, BRGPHY_MII_1000CTL); DELAY(1000); PHY_WRITE(mii, BRGPHY_MII_ANAR, BMSR_MEDIA_TO_ANAR(mii->mii_capabilities) | ANAR_CSMA); DELAY(1000); PHY_WRITE(mii, BRGPHY_MII_BMCR, BRGPHY_BMCR_AUTOEN | BRGPHY_BMCR_STARTNEG); PHY_WRITE(mii, BRGPHY_MII_IMR, 0xFF00); } if (waitfor) { /* Wait 500ms for it to complete. */ for (i = 0; i < 500; i++) { if ((bmsr = PHY_READ(mii, BRGPHY_MII_BMSR)) & BRGPHY_BMSR_ACOMP) return (0); DELAY(1000); #if 0 if ((bmsr & BMSR_ACOMP) == 0) printf("%s: autonegotiation failed to complete\n", mii->mii_dev.dv_xname); #endif } /* * Don't need to worry about clearing MIIF_DOINGAUTO. * If that's set, a timeout is pending, and it will * clear the flag. */ return (EIO); } /* * Just let it finish asynchronously. This is for the benefit of * the tick handler driving autonegotiation. Don't want 500ms * delays all the time while the system is running! */ if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { mii->mii_flags |= MIIF_DOINGAUTO; timeout_set(&mii->mii_phy_timo, mii_phy_auto_timeout, mii); timeout_add(&mii->mii_phy_timo, hz >> 1); } return (EJUSTRETURN); }