/*- * SPDX-License-Identifier: BSD-4-Clause * * 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. */ #include /* * 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 #include "miidevs.h" #include #include #include #include #include "miibus_if.h" #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 static int dcphy_probe(device_t); static int dcphy_attach(device_t); static device_method_t dcphy_methods[] = { /* device interface */ DEVMETHOD(device_probe, dcphy_probe), DEVMETHOD(device_attach, dcphy_attach), DEVMETHOD(device_detach, mii_phy_detach), DEVMETHOD(device_shutdown, bus_generic_shutdown), DEVMETHOD_END }; static devclass_t dcphy_devclass; static driver_t dcphy_driver = { "dcphy", dcphy_methods, sizeof(struct mii_softc) }; DRIVER_MODULE(dcphy, miibus, dcphy_driver, dcphy_devclass, 0, 0); static int dcphy_service(struct mii_softc *, struct mii_data *, int); static void dcphy_status(struct mii_softc *); static void dcphy_reset(struct mii_softc *); static int dcphy_auto(struct mii_softc *); static const struct mii_phy_funcs dcphy_funcs = { dcphy_service, dcphy_status, dcphy_reset }; static int dcphy_probe(device_t dev) { struct mii_attach_args *ma; ma = device_get_ivars(dev); /* * The dc driver will report the 21143 vendor and device * ID to let us know that it wants us to attach. */ if (ma->mii_id1 != DC_VENDORID_DEC || ma->mii_id2 != DC_DEVICEID_21143) return (ENXIO); device_set_desc(dev, "Intel 21143 NWAY media interface"); return (BUS_PROBE_DEFAULT); } static int dcphy_attach(device_t dev) { struct mii_softc *sc; struct dc_softc *dc_sc; device_t brdev; sc = device_get_softc(dev); mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE, &dcphy_funcs, 0); /*PHY_RESET(sc);*/ dc_sc = if_getsoftc(sc->mii_pdata->mii_ifp); CSR_WRITE_4(dc_sc, DC_10BTSTAT, 0); CSR_WRITE_4(dc_sc, DC_10BTCTRL, 0); brdev = device_get_parent(sc->mii_dev); switch (pci_get_subdevice(brdev) << 16 | pci_get_subvendor(brdev)) { 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 sc->mii_capabilities = BMSR_ANEG | BMSR_100TXFDX | BMSR_100TXHDX | BMSR_10TFDX | BMSR_10THDX; break; } sc->mii_capabilities &= sc->mii_capmask; device_printf(dev, " "); mii_phy_add_media(sc); printf("\n"); MIIBUS_MEDIAINIT(sc->mii_dev); return (0); } static 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; dc_sc = if_getsoftc(mii->mii_ifp); switch (cmd) { case MII_POLLSTAT: break; case MII_MEDIACHG: /* * If the interface is not up, don't do anything. */ if ((if_getflags(mii->mii_ifp) & IFF_UP) == 0) break; 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);*/ (void)dcphy_auto(sc); 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_FDX) != 0) 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_FDX) != 0) 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_FDX) != 0) 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: /* * Is the interface even up? */ if ((if_getflags(mii->mii_ifp) & 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 5 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 <= 50) break; sc->mii_ticks = 0; dcphy_auto(sc); break; } /* Update the media status. */ PHY_STATUS(sc); /* Callback if something changed. */ mii_phy_update(sc, cmd); return (0); } static void dcphy_status(struct mii_softc *sc) { struct mii_data *mii = sc->mii_pdata; int anlpar, tstat; struct dc_softc *dc_sc; dc_sc = if_getsoftc(mii->mii_ifp); mii->mii_media_status = IFM_AVALID; mii->mii_media_active = IFM_ETHER; if ((if_getflags(mii->mii_ifp) & IFF_UP) == 0) return; tstat = CSR_READ_4(dc_sc, DC_10BTSTAT); if (!(tstat & DC_TSTAT_LS10) || !(tstat & 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... */ 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_TX_FD && sc->mii_capabilities & BMSR_100TXFDX) mii->mii_media_active |= IFM_100_TX | IFM_FDX; else if (anlpar & ANLPAR_T4 && sc->mii_capabilities & BMSR_100T4) mii->mii_media_active |= IFM_100_T4 | IFM_HDX; 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 (!(tstat & DC_TSTAT_LS100)) mii->mii_media_active |= IFM_100_TX | IFM_HDX; else if (!(tstat & 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; } static int dcphy_auto(struct mii_softc *mii) { struct dc_softc *sc; sc = if_getsoftc(mii->mii_pdata->mii_ifp); 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); return (EJUSTRETURN); } static void dcphy_reset(struct mii_softc *mii) { struct dc_softc *sc; sc = if_getsoftc(mii->mii_pdata->mii_ifp); DC_CLRBIT(sc, DC_SIARESET, DC_SIA_RESET); DELAY(1000); DC_SETBIT(sc, DC_SIARESET, DC_SIA_RESET); }