/* * Copyright (c) 1997, 1998, 1999 * Bill Paul <wpaul@ee.columbia.edu>. 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. * * $FreeBSD$ */ /* * pseudo-driver for internal NWAY support on Macronix 98713/98715/98725 * PMAC controller chips. The Macronix chips use the same internal * NWAY register layout as the DEC/Intel 21143. Technically we're * abusing the miibus code to handle the 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 <sys/param.h> #include <sys/systm.h> #include <sys/kernel.h> #include <sys/malloc.h> #include <sys/socket.h> #include <sys/errno.h> #include <sys/module.h> #include <sys/bus.h> #include <net/if.h> #include <net/if_arp.h> #include <net/if_media.h> #include <dev/mii/mii.h> #include <dev/mii/miivar.h> #include <dev/mii/miidevs.h> #include <machine/clock.h> #include <machine/bus_pio.h> #include <machine/bus_memio.h> #include <machine/bus.h> #include <machine/resource.h> #include <sys/bus.h> #include <pci/if_mxreg.h> #include "miibus_if.h" #if !defined(lint) static const char rcsid[] = "$FreeBSD$"; #endif #define MX_SETBIT(sc, reg, x) \ CSR_WRITE_4(sc, reg, \ CSR_READ_4(sc, reg) | x) #define MX_CLRBIT(sc, reg, x) \ CSR_WRITE_4(sc, reg, \ CSR_READ_4(sc, reg) & ~x) struct mxphy_softc { struct mii_softc mx_mii; u_int32_t mx_linkstate; u_int32_t mx_media; }; static int mxphy_probe __P((device_t)); static int mxphy_attach __P((device_t)); static int mxphy_detach __P((device_t)); static device_method_t mxphy_methods[] = { /* device interface */ DEVMETHOD(device_probe, mxphy_probe), DEVMETHOD(device_attach, mxphy_attach), DEVMETHOD(device_detach, mxphy_detach), DEVMETHOD(device_shutdown, bus_generic_shutdown), { 0, 0 } }; static devclass_t mxphy_devclass; static driver_t mxphy_driver = { "mxphy", mxphy_methods, sizeof(struct mxphy_softc) }; DRIVER_MODULE(mxphy, miibus, mxphy_driver, mxphy_devclass, 0, 0); int mxphy_service __P((struct mii_softc *, struct mii_data *, int)); void mxphy_status __P((struct mii_softc *)); static int mxphy_auto __P((struct mii_softc *, int)); static void mxphy_auto_timeout __P((void *)); static void mxphy_reset __P((struct mii_softc *)); static int mxphy_probe(dev) device_t dev; { struct mii_attach_args *ma; ma = device_get_ivars(dev); /* * The mx driver will report the Macronix vendor ID * and the 98715 device ID to let us know that it wants * us to attach. Actually, we could also be attached * in the case of a 98713A chip, but there's no point * in differentiating between the two since we do the * same things for both. */ if (ma->mii_id1 != MX_VENDORID || ma->mii_id2 != MX_DEVICEID_987x5) return(ENXIO); device_set_desc(dev, "Macronix NWAY media interface"); return (0); } static int mxphy_attach(dev) device_t dev; { struct mxphy_softc *msc; struct mii_softc *sc; struct mii_attach_args *ma; struct mii_data *mii; msc = device_get_softc(dev); sc = &msc->mx_mii; ma = device_get_ivars(dev); sc->mii_dev = device_get_parent(dev); mii = device_get_softc(sc->mii_dev); LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); sc->mii_inst = mii->mii_instance; sc->mii_phy = ma->mii_phyno; sc->mii_service = mxphy_service; sc->mii_pdata = mii; sc->mii_flags |= MIIF_NOISOLATE; mii->mii_instance++; #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), BMCR_ISO); ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), BMCR_LOOP|BMCR_S100); /*mxphy_reset(sc);*/ sc->mii_capabilities = BMSR_ANEG|BMSR_100TXFDX|BMSR_100TXHDX|BMSR_10TFDX|BMSR_10THDX; sc->mii_capabilities &= ma->mii_capmask; device_printf(dev, " "); if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) printf("no media present"); else mii_add_media(mii, sc->mii_capabilities, sc->mii_inst); printf("\n"); #undef ADD MIIBUS_MEDIAINIT(sc->mii_dev); return(0); } static int mxphy_detach(dev) device_t dev; { struct mxphy_softc *sc; struct mii_data *mii; sc = device_get_softc(dev); mii = device_get_softc(device_get_parent(dev)); sc->mx_mii.mii_dev = NULL; LIST_REMOVE(&sc->mx_mii, mii_list); return(0); } int mxphy_service(xsc, mii, cmd) struct mii_softc *xsc; struct mii_data *mii; int cmd; { struct mx_softc *mx_sc; struct ifmedia_entry *ife = mii->mii_media.ifm_cur; int reg; u_int32_t mode; struct mxphy_softc *msc = (struct mxphy_softc *)xsc; struct mii_softc *sc = (struct mii_softc *)&msc->mx_mii; mx_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; mode = CSR_READ_4(mx_sc, MX_NETCFG); mode &= ~(MX_NETCFG_FULLDUPLEX|MX_NETCFG_PORTSEL| MX_NETCFG_PCS|MX_NETCFG_SCRAMBLER|MX_NETCFG_SPEEDSEL); switch (IFM_SUBTYPE(ife->ifm_media)) { case IFM_AUTO: mxphy_reset(sc); (void) mxphy_auto(sc, 1); msc->mx_linkstate = msc->mx_media = 0; break; case IFM_100_T4: /* * XXX Not supported as a manual setting right now. */ return (EINVAL); case IFM_100_TX: mode |= MX_NETCFG_PORTSEL|MX_NETCFG_PCS| MX_NETCFG_SCRAMBLER; if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) mode |= MX_NETCFG_FULLDUPLEX; else mode &= ~MX_NETCFG_FULLDUPLEX; MX_CLRBIT(mx_sc, MX_10BTCTRL, MX_TCTL_AUTONEGENBL); CSR_WRITE_4(mx_sc, MX_NETCFG, mode); break; case IFM_10_T: mode &= ~MX_NETCFG_PORTSEL; mode |= MX_NETCFG_SPEEDSEL; if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) mode |= MX_NETCFG_FULLDUPLEX; else mode &= ~MX_NETCFG_FULLDUPLEX; MX_CLRBIT(mx_sc, MX_10BTCTRL, MX_TCTL_AUTONEGENBL); CSR_WRITE_4(mx_sc, MX_NETCFG, mode); break; default: return(EINVAL); break; } 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); /* * 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 = CSR_READ_4(mx_sc, MX_10BTSTAT) & (MX_TSTAT_LS10|MX_TSTAT_LS100); reg = CSR_READ_4(mx_sc, MX_10BTSTAT) & (MX_TSTAT_LS10|MX_TSTAT_LS100); if (reg == msc->mx_linkstate) return (0); if (!reg) { msc->mx_linkstate = reg; break; } msc->mx_media = 0; sc->mii_ticks = 0; msc->mx_linkstate = reg; mxphy_reset(sc); if (mxphy_auto(sc, 0) == EJUSTRETURN) return (0); break; } /* Update the media status. */ mxphy_status(sc); /* Callback if something changed. */ if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { MIIBUS_STATCHG(sc->mii_dev); DELAY(100000); sc->mii_active = mii->mii_media_active; } return (0); } void mxphy_status(sc) struct mii_softc *sc; { struct mii_data *mii = sc->mii_pdata; int /*bmsr, bmcr,*/ reg, anlpar; struct mx_softc *mx_sc; struct mxphy_softc *msc = (struct mxphy_softc *)sc; mx_sc = mii->mii_ifp->if_softc; mii->mii_media_status = IFM_AVALID; mii->mii_media_active = IFM_ETHER; reg = CSR_READ_4(mx_sc, MX_10BTSTAT) & (MX_TSTAT_LS10|MX_TSTAT_LS100); if (!(reg & MX_TSTAT_LS10) || !(reg & MX_TSTAT_LS100)) mii->mii_media_status |= IFM_ACTIVE; if (CSR_READ_4(mx_sc, MX_10BTCTRL) & MX_TCTL_AUTONEGENBL && CSR_READ_4(mx_sc, MX_10BTSTAT) & MX_TSTAT_ANEGSTAT) { if (!(CSR_READ_4(mx_sc, MX_10BTSTAT) & 0xFFFF0000)) { /* Erg, still trying, I guess... */ if (CSR_READ_4(mx_sc, MX_10BTSTAT) & MX_TSTAT_LP_CAN_NWAY) { mii->mii_media_active |= IFM_NONE; return; } else msc->mx_media = 0; } if (CSR_READ_4(mx_sc, MX_10BTSTAT) & MX_TSTAT_LP_CAN_NWAY) { anlpar = CSR_READ_4(mx_sc, MX_10BTSTAT) >> 16; if (anlpar & ANLPAR_T4) mii->mii_media_active |= IFM_100_T4; else if (anlpar & ANLPAR_TX_FD) mii->mii_media_active |= IFM_100_TX|IFM_FDX; else if (anlpar & ANLPAR_TX) mii->mii_media_active |= IFM_100_TX; 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; else mii->mii_media_active |= IFM_NONE; msc->mx_media = mii->mii_media_active; return; } } if (msc->mx_media) mii->mii_media_active = msc->mx_media; reg = CSR_READ_4(mx_sc, MX_10BTSTAT) & (MX_TSTAT_LS10|MX_TSTAT_LS100); msc->mx_linkstate = reg; if (!(reg & MX_TSTAT_LS100)) mii->mii_media_active |= IFM_100_TX; else mii->mii_media_active |= IFM_10_T; msc->mx_media = mii->mii_media_active; return; } static int mxphy_auto(mii, waitfor) struct mii_softc *mii; int waitfor; { int i; struct mx_softc *sc; sc = mii->mii_pdata->mii_ifp->if_softc; if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { CSR_WRITE_4(sc, MX_10BTCTRL, 0x3FFFF); MX_CLRBIT(sc, MX_NETCFG, MX_NETCFG_PORTSEL); MX_SETBIT(sc, MX_NETCFG, MX_NETCFG_FULLDUPLEX); MX_SETBIT(sc, MX_10BTCTRL, MX_TCTL_AUTONEGENBL); MX_SETBIT(sc, MX_10BTCTRL, MX_ASTAT_TXDISABLE); DELAY(1000000); } if (waitfor) { /* Wait 500ms for it to complete. */ for (i = 0; i < 500; i++) { if ((CSR_READ_4(sc, MX_10BTSTAT) & MX_TSTAT_ANEGSTAT) == MX_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; timeout(mxphy_auto_timeout, mii, hz >> 1); } return(EJUSTRETURN); } static void mxphy_auto_timeout(arg) void *arg; { struct mii_softc *mii = arg; int s; s = splnet(); mii->mii_flags &= ~MIIF_DOINGAUTO; /* Update the media status. */ (void) (*mii->mii_service)(mii, mii->mii_pdata, MII_POLLSTAT); splx(s); } static void mxphy_reset(mii) struct mii_softc *mii; { struct mx_softc *sc; sc = mii->mii_pdata->mii_ifp->if_softc; MX_SETBIT(sc, MX_SIARESET, MX_SIA_RESET_NWAY); DELAY(1000); MX_CLRBIT(sc, MX_SIARESET, MX_SIA_RESET_NWAY); return; }