/* $OpenBSD: dcphy.c,v 1.21 2008/07/22 11:20:10 martynas Exp $ */ /* * Copyright (c) 1997, 1998, 1999 * 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/dcphy.c,v 1.6 2000/10/05 17:36:14 wpaul Exp $ */ /* * Pseudo-driver for internal NWAY support on DEC 21143 and workalike * controllers. Technically we're abusing the miibus code to handle * media selection and NWAY support here since there is no MII * interface. However the logical operations are roughly the same, * and the alternative is to create a fake MII interface in the driver, * which is harder to do. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define DC_SETBIT(sc, reg, x) \ CSR_WRITE_4(sc, reg, \ CSR_READ_4(sc, reg) | x) #define DC_CLRBIT(sc, reg, x) \ CSR_WRITE_4(sc, reg, \ CSR_READ_4(sc, reg) & ~x) #define MIIF_AUTOTIMEOUT 0x0004 /* * This is the subsystem ID for the built-in 21143 ethernet * in several Compaq Presario systems. Apparently these are * 10Mbps only, so we need to treat them specially. */ #define COMPAQ_PRESARIO_ID 0xb0bb0e11 int dcphy_match(struct device *, void *, void *); void dcphy_attach(struct device *, struct device *, void *); struct cfattach dcphy_ca = { sizeof(struct mii_softc), dcphy_match, dcphy_attach, mii_phy_detach, mii_phy_activate }; struct cfdriver dcphy_cd = { NULL, "dcphy", DV_DULL }; int dcphy_service(struct mii_softc *, struct mii_data *, int); void dcphy_status(struct mii_softc *); int dcphy_mii_phy_auto(struct mii_softc *, int); void dcphy_reset(struct mii_softc *); const struct mii_phy_funcs dcphy_funcs = { dcphy_service, dcphy_status, dcphy_reset, }; int dcphy_match(struct device *parent, void *match, void *aux) { struct mii_attach_args *ma = aux; /* * The dc driver will report the 21143 vendor and device * ID to let us know that it wants us to attach. */ if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxDEC && MII_MODEL(ma->mii_id2) == MII_MODEL_xxDEC_xxDC) return (10); return (0); } void dcphy_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; struct dc_softc *dc_sc; printf(": internal PHY\n"); sc->mii_inst = mii->mii_instance; sc->mii_phy = ma->mii_phyno; sc->mii_funcs = &dcphy_funcs; sc->mii_pdata = mii; sc->mii_flags = ma->mii_flags; sc->mii_anegticks = 50; sc->mii_flags |= MIIF_NOISOLATE; dc_sc = mii->mii_ifp->if_softc; CSR_WRITE_4(dc_sc, DC_10BTSTAT, 0); CSR_WRITE_4(dc_sc, DC_10BTCTRL, 0); #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) switch(dc_sc->dc_csid) { case COMPAQ_PRESARIO_ID: /* Example of how to only allow 10Mbps modes. */ sc->mii_capabilities = BMSR_ANEG|BMSR_10TFDX|BMSR_10THDX; break; default: if (dc_sc->dc_pmode == DC_PMODE_SIA) { sc->mii_capabilities = BMSR_ANEG|BMSR_10TFDX|BMSR_10THDX; } else { ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), BMCR_LOOP|BMCR_S100); sc->mii_capabilities = BMSR_ANEG|BMSR_100TXFDX|BMSR_100TXHDX| BMSR_10TFDX|BMSR_10THDX; } break; } if (dc_sc->dc_type == DC_TYPE_21145) sc->mii_capabilities = BMSR_10THDX; sc->mii_capabilities &= ma->mii_capmask; if (sc->mii_capabilities & BMSR_MEDIAMASK) mii_phy_add_media(sc); #undef ADD } int dcphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) { struct dc_softc *dc_sc; struct ifmedia_entry *ife = mii->mii_media.ifm_cur; int reg; u_int32_t mode; if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) return (ENXIO); dc_sc = mii->mii_ifp->if_softc; 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) return (0); /* * If the interface is not up, don't do anything. */ if ((mii->mii_ifp->if_flags & IFF_UP) == 0) break; sc->mii_flags = 0; mii->mii_media_active = IFM_NONE; mode = CSR_READ_4(dc_sc, DC_NETCFG); mode &= ~(DC_NETCFG_FULLDUPLEX|DC_NETCFG_PORTSEL| DC_NETCFG_PCS|DC_NETCFG_SCRAMBLER|DC_NETCFG_SPEEDSEL); switch (IFM_SUBTYPE(ife->ifm_media)) { case IFM_AUTO: /*PHY_RESET(sc);*/ sc->mii_flags &= ~MIIF_DOINGAUTO; (void) dcphy_mii_phy_auto(sc, 0); break; case IFM_100_TX: PHY_RESET(sc); DC_CLRBIT(dc_sc, DC_10BTCTRL, DC_TCTL_AUTONEGENBL); mode |= DC_NETCFG_PORTSEL|DC_NETCFG_PCS| DC_NETCFG_SCRAMBLER; if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) mode |= DC_NETCFG_FULLDUPLEX; else mode &= ~DC_NETCFG_FULLDUPLEX; CSR_WRITE_4(dc_sc, DC_NETCFG, mode); break; case IFM_10_T: DC_CLRBIT(dc_sc, DC_SIARESET, DC_SIA_RESET); DC_CLRBIT(dc_sc, DC_10BTCTRL, 0xFFFF); if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) DC_SETBIT(dc_sc, DC_10BTCTRL, 0x7F3D); else DC_SETBIT(dc_sc, DC_10BTCTRL, 0x7F3F); DC_SETBIT(dc_sc, DC_SIARESET, DC_SIA_RESET); DC_CLRBIT(dc_sc, DC_10BTCTRL, DC_TCTL_AUTONEGENBL); mode &= ~DC_NETCFG_PORTSEL; mode |= DC_NETCFG_SPEEDSEL; if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) mode |= DC_NETCFG_FULLDUPLEX; else mode &= ~DC_NETCFG_FULLDUPLEX; CSR_WRITE_4(dc_sc, DC_NETCFG, mode); 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); /* * 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; reg = CSR_READ_4(dc_sc, DC_10BTSTAT); if (!(reg & DC_TSTAT_LS10) || !(reg & DC_TSTAT_LS100)) break; /* * Only retry autonegotiation every mii_anegticks seconds. * * Otherwise, fall through to calling dcphy_status() * since real Intel 21143 chips don't show valid link * status until autonegotiation is switched off, and * that only happens in dcphy_status(). Without this, * successful autonegotiation is never recognised on * these chips. */ if (++sc->mii_ticks <= sc->mii_anegticks) break; sc->mii_ticks = 0; sc->mii_flags &= ~MIIF_DOINGAUTO; dcphy_mii_phy_auto(sc, 0); break; } /* Update the media status. */ mii_phy_status(sc); /* Callback if something changed. */ mii_phy_update(sc, cmd); return (0); } void dcphy_status(struct mii_softc *sc) { struct mii_data *mii = sc->mii_pdata; int reg, anlpar, tstat = 0; struct dc_softc *dc_sc; dc_sc = mii->mii_ifp->if_softc; mii->mii_media_status = IFM_AVALID; mii->mii_media_active = IFM_ETHER; reg = CSR_READ_4(dc_sc, DC_10BTSTAT); if (!(reg & DC_TSTAT_LS10) || !(reg & DC_TSTAT_LS100)) mii->mii_media_status |= IFM_ACTIVE; if (CSR_READ_4(dc_sc, DC_10BTCTRL) & DC_TCTL_AUTONEGENBL) { /* Erg, still trying, I guess... */ tstat = CSR_READ_4(dc_sc, DC_10BTSTAT); if ((tstat & DC_TSTAT_ANEGSTAT) != DC_ASTAT_AUTONEGCMP) { if ((DC_IS_MACRONIX(dc_sc) || DC_IS_PNICII(dc_sc)) && (tstat & DC_TSTAT_ANEGSTAT) == DC_ASTAT_DISABLE) goto skip; mii->mii_media_active |= IFM_NONE; return; } if (tstat & DC_TSTAT_LP_CAN_NWAY) { anlpar = tstat >> 16; if (anlpar & ANLPAR_T4 && sc->mii_capabilities & BMSR_100T4) mii->mii_media_active |= IFM_100_T4|IFM_HDX; else if (anlpar & ANLPAR_TX_FD && sc->mii_capabilities & BMSR_100TXFDX) mii->mii_media_active |= IFM_100_TX|IFM_FDX; else if (anlpar & ANLPAR_TX && sc->mii_capabilities & BMSR_100TXHDX) mii->mii_media_active |= IFM_100_TX|IFM_HDX; else if (anlpar & ANLPAR_10_FD) mii->mii_media_active |= IFM_10_T|IFM_FDX; else if (anlpar & ANLPAR_10) mii->mii_media_active |= IFM_10_T|IFM_HDX; else mii->mii_media_active |= IFM_NONE; if (DC_IS_INTEL(dc_sc)) DC_CLRBIT(dc_sc, DC_10BTCTRL, DC_TCTL_AUTONEGENBL); return; } /* * If the other side doesn't support NWAY, then the * best we can do is determine if we have a 10Mbps or * 100Mbps link. There's no way to know if the link * is full or half duplex, so we default to half duplex * and hope that the user is clever enough to manually * change the media settings if we're wrong. */ if (!(reg & DC_TSTAT_LS100)) mii->mii_media_active |= IFM_100_TX|IFM_HDX; else if (!(reg & DC_TSTAT_LS10)) mii->mii_media_active |= IFM_10_T|IFM_HDX; else mii->mii_media_active |= IFM_NONE; if (DC_IS_INTEL(dc_sc)) DC_CLRBIT(dc_sc, DC_10BTCTRL, DC_TCTL_AUTONEGENBL); return; } skip: if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_SPEEDSEL) mii->mii_media_active |= IFM_10_T; else mii->mii_media_active |= IFM_100_TX; if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_FULLDUPLEX) mii->mii_media_active |= IFM_FDX; else mii->mii_media_active |= IFM_HDX; } int dcphy_mii_phy_auto(struct mii_softc *mii, int waitfor) { int i; struct dc_softc *sc; sc = mii->mii_pdata->mii_ifp->if_softc; if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL); DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_FULLDUPLEX); DC_CLRBIT(sc, DC_SIARESET, DC_SIA_RESET); if (mii->mii_capabilities & BMSR_100TXHDX) CSR_WRITE_4(sc, DC_10BTCTRL, 0x3FFFF); else CSR_WRITE_4(sc, DC_10BTCTRL, 0xFFFF); DC_SETBIT(sc, DC_SIARESET, DC_SIA_RESET); DC_SETBIT(sc, DC_10BTCTRL, DC_TCTL_AUTONEGENBL); DC_SETBIT(sc, DC_10BTSTAT, DC_ASTAT_TXDISABLE); } if (waitfor) { /* Wait 500ms for it to complete. */ for (i = 0; i < 500; i++) { if ((CSR_READ_4(sc, DC_10BTSTAT) & DC_TSTAT_ANEGSTAT) == DC_ASTAT_AUTONEGCMP) return (0); DELAY(1000); } /* * 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; return (EJUSTRETURN); } void dcphy_reset(struct mii_softc *mii) { struct dc_softc *sc; sc = mii->mii_pdata->mii_ifp->if_softc; DC_CLRBIT(sc, DC_SIARESET, DC_SIA_RESET); DELAY(1000); DC_SETBIT(sc, DC_SIARESET, DC_SIA_RESET); return; }