/* $NetBSD: ciphy.c,v 1.3 2005/03/16 17:25:32 briggs Exp $ */ /*- * Copyright (c) 2004 * 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/ciphy.c,v 1.2 2005/01/06 01:42:55 imp Exp */ #include __KERNEL_RCSID(0, "$NetBSD: ciphy.c,v 1.3 2005/03/16 17:25:32 briggs Exp $"); /* * Driver for the Cicada CS8201 10/100/1000 copper PHY. */ #include #include #include #include #include #include #include #include #include #include #include #include static int ciphymatch(struct device *, struct cfdata *, void *); static void ciphyattach(struct device *, struct device *, void *); CFATTACH_DECL(ciphy, sizeof(struct mii_softc), ciphymatch, ciphyattach, mii_phy_detach, mii_phy_activate); static int ciphy_service(struct mii_softc *, struct mii_data *, int); static void ciphy_status(struct mii_softc *); static void ciphy_reset(struct mii_softc *); static void ciphy_fixup(struct mii_softc *); static const struct mii_phy_funcs ciphy_funcs = { ciphy_service, ciphy_status, mii_phy_reset, }; static const struct mii_phydesc ciphys[] = { { MII_OUI_CICADA, MII_MODEL_CICADA_CS8201, MII_STR_CICADA_CS8201 }, { MII_OUI_CICADA, MII_MODEL_CICADA_CS8201A, MII_STR_CICADA_CS8201A }, { MII_OUI_CICADA, MII_MODEL_CICADA_CS8201B, MII_STR_CICADA_CS8201B }, { MII_OUI_xxCICADA, MII_MODEL_xxCICADA_CS8201B, MII_STR_xxCICADA_CS8201B }, { 0, 0, NULL }, }; static int ciphymatch(struct device *parent, struct cfdata *match, void *aux) { struct mii_attach_args *ma = aux; if (mii_phy_match(ma, ciphys) != NULL) return (10); return (0); } static void ciphyattach(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, ciphys); 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_funcs = &ciphy_funcs; sc->mii_pdata = mii; sc->mii_flags = ma->mii_flags; sc->mii_anegticks = 5; sc->mii_flags |= MIIF_NOISOLATE; ciphy_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); 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 ciphy_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, gig; 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; ciphy_fixup(sc); /* XXX hardware bug work-around */ switch (IFM_SUBTYPE(ife->ifm_media)) { case IFM_AUTO: #ifdef foo /* * If we're already in auto mode, just return. */ if (PHY_READ(sc, CIPHY_MII_BMCR) & CIPHY_BMCR_AUTOEN) return (0); #endif (void) mii_phy_auto(sc, 0); break; case IFM_1000_T: speed = CIPHY_S1000; goto setit; case IFM_100_TX: speed = CIPHY_S100; goto setit; case IFM_10_T: speed = CIPHY_S10; setit: if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) { speed |= CIPHY_BMCR_FDX; gig = CIPHY_1000CTL_AFD; } else { gig = CIPHY_1000CTL_AHD; } PHY_WRITE(sc, CIPHY_MII_1000CTL, 0); PHY_WRITE(sc, CIPHY_MII_BMCR, speed); PHY_WRITE(sc, CIPHY_MII_ANAR, CIPHY_SEL_TYPE); if (IFM_SUBTYPE(ife->ifm_media) != IFM_1000_T) break; PHY_WRITE(sc, CIPHY_MII_1000CTL, gig); PHY_WRITE(sc, CIPHY_MII_BMCR, speed|CIPHY_BMCR_AUTOEN|CIPHY_BMCR_STARTNEG); /* * 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, CIPHY_MII_1000CTL, gig|CIPHY_1000CTL_MSE|CIPHY_1000CTL_MSC); } else { PHY_WRITE(sc, CIPHY_MII_1000CTL, gig|CIPHY_1000CTL_MSE); } break; case IFM_NONE: PHY_WRITE(sc, MII_BMCR, BMCR_ISO|BMCR_PDOWN); break; case IFM_100_T4: 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); /* * Is the interface even up? */ if ((mii->mii_ifp->if_flags & IFF_UP) == 0) return (0); /* * Only used for autonegotiation. */ if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) break; /* * 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, MII_BMSR) | PHY_READ(sc, MII_BMSR); if (reg & BMSR_LINK) break; /* * Only retry autonegotiation every 5 seconds. */ if (++sc->mii_ticks <= 5/*10*/) break; sc->mii_ticks = 0; mii_phy_auto(sc, 0); return (0); } /* Update the media status. */ ciphy_status(sc); /* * Callback if something changed. Note that we need to poke * apply fixups for certain PHY revs. */ if (sc->mii_media_active != mii->mii_media_active || sc->mii_media_status != mii->mii_media_status || cmd == MII_MEDIACHG) { ciphy_fixup(sc); } mii_phy_update(sc, cmd); return (0); } static void ciphy_status(sc) struct mii_softc *sc; { struct mii_data *mii = sc->mii_pdata; int bmsr, bmcr; 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, CIPHY_MII_BMCR); if (bmcr & CIPHY_BMCR_LOOP) mii->mii_media_active |= IFM_LOOP; if (bmcr & CIPHY_BMCR_AUTOEN) { if ((bmsr & CIPHY_BMSR_ACOMP) == 0) { /* Erg, still trying, I guess... */ mii->mii_media_active |= IFM_NONE; return; } } bmsr = PHY_READ(sc, CIPHY_MII_AUXCSR); switch (bmsr & CIPHY_AUXCSR_SPEED) { case CIPHY_SPEED10: mii->mii_media_active |= IFM_10_T; break; case CIPHY_SPEED100: mii->mii_media_active |= IFM_100_TX; break; case CIPHY_SPEED1000: mii->mii_media_active |= IFM_1000_T; break; default: printf("%s: unknown PHY speed %x\n", sc->mii_dev.dv_xname, bmsr & CIPHY_AUXCSR_SPEED); break; } if (bmsr & CIPHY_AUXCSR_FDX) mii->mii_media_active |= IFM_FDX; return; } static void ciphy_reset(struct mii_softc *sc) { mii_phy_reset(sc); DELAY(1000); return; } #define PHY_SETBIT(x, y, z) \ PHY_WRITE(x, y, (PHY_READ(x, y) | (z))) #define PHY_CLRBIT(x, y, z) \ PHY_WRITE(x, y, (PHY_READ(x, y) & ~(z))) static void ciphy_fixup(struct mii_softc *sc) { uint16_t model; uint16_t status, speed; model = MII_MODEL(PHY_READ(sc, CIPHY_MII_PHYIDR2)); status = PHY_READ(sc, CIPHY_MII_AUXCSR); speed = status & CIPHY_AUXCSR_SPEED; switch (model) { case MII_MODEL_CICADA_CS8201: /* Turn off "aux mode" (whatever that means) */ PHY_SETBIT(sc, CIPHY_MII_AUXCSR, CIPHY_AUXCSR_MDPPS); /* * Work around speed polling bug in VT3119/VT3216 * when using MII in full duplex mode. */ if ((speed == CIPHY_SPEED10 || speed == CIPHY_SPEED100) && (status & CIPHY_AUXCSR_FDX)) { PHY_SETBIT(sc, CIPHY_MII_10BTCSR, CIPHY_10BTCSR_ECHO); } else { PHY_CLRBIT(sc, CIPHY_MII_10BTCSR, CIPHY_10BTCSR_ECHO); } /* Enable link/activity LED blink. */ PHY_SETBIT(sc, CIPHY_MII_LED, CIPHY_LED_LINKACTBLINK); break; case MII_MODEL_CICADA_CS8201A: case MII_MODEL_CICADA_CS8201B: /* * Work around speed polling bug in VT3119/VT3216 * when using MII in full duplex mode. */ if ((speed == CIPHY_SPEED10 || speed == CIPHY_SPEED100) && (status & CIPHY_AUXCSR_FDX)) { PHY_SETBIT(sc, CIPHY_MII_10BTCSR, CIPHY_10BTCSR_ECHO); } else { PHY_CLRBIT(sc, CIPHY_MII_10BTCSR, CIPHY_10BTCSR_ECHO); } break; default: printf("%s: unknown CICADA PHY model %x\n", sc->mii_dev.dv_xname, model); break; } return; }