/* $OpenBSD: rlphy.c,v 1.23 2006/05/16 02:24:45 brad 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/rlphy.c,v 1.2.2.4 2002/11/08 21:53:49 semenu Exp $ * $DragonFly: src/sys/dev/netif/mii_layer/rlphy.c,v 1.12 2006/12/22 23:26:20 swildner Exp $ */ /* * driver for RealTek 8139 internal PHYs */ #include #include #include #include #include #include #include #include #include "mii.h" #include "miivar.h" #include "miidevs.h" #include "../rl/if_rlreg.h" #include "miibus_if.h" static int rlphy_probe(device_t); static int rlphy_attach(device_t); static int rlphy_service(struct mii_softc *, struct mii_data *, int); static void rlphy_status(struct mii_softc *); static device_method_t rlphy_methods[] = { /* device interface */ DEVMETHOD(device_probe, rlphy_probe), DEVMETHOD(device_attach, rlphy_attach), DEVMETHOD(device_detach, ukphy_detach), DEVMETHOD(device_shutdown, bus_generic_shutdown), { 0, 0 } }; static const struct mii_phydesc rlphys[] = { MII_PHYDESC(REALTEK, RTL8201L), MII_PHYDESC(ICPLUS, IP101), MII_PHYDESC_NULL }; static devclass_t rlphy_devclass; static driver_t rlphy_driver = { "rlphy", rlphy_methods, sizeof(struct mii_softc) }; DRIVER_MODULE(rlphy, miibus, rlphy_driver, rlphy_devclass, 0, 0); static int rlphy_probe(device_t dev) { struct mii_attach_args *ma = device_get_ivars(dev); const struct mii_phydesc *mpd; device_t parent; /* * A "real" phy should get preference, but on the 8139 there * is no phyid register. */ mpd = mii_phy_match(ma, rlphys); if (mpd != NULL) { device_set_desc(dev, mpd->mpd_name); return (0); } /* * RealTek PHY doesn't have vendor/device ID registers: * the rl driver fakes up a return value of all zeros. */ if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 || MII_MODEL(ma->mii_id2) != 0) return (ENXIO); parent = device_get_parent(device_get_parent(dev)); /* * Make sure the parent is an `rl'. */ if (strcmp(device_get_name(parent), "rl") != 0) return (ENXIO); device_set_desc(dev, "RealTek internal media interface"); return (0); } static int rlphy_attach(device_t dev) { struct mii_softc *sc; struct mii_attach_args *ma; struct mii_data *mii; sc = device_get_softc(dev); ma = device_get_ivars(dev); mii_softc_init(sc, ma); sc->mii_dev = device_get_parent(dev); mii = device_get_softc(sc->mii_dev); /* * The RealTek PHY can never be isolated, so never allow non-zero * instances! */ if (mii->mii_instance != 0) { device_printf(dev, "ignoring this PHY, non-zero instance\n"); return(ENXIO); } LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); sc->mii_inst = mii->mii_instance; sc->mii_service = rlphy_service; sc->mii_pdata = mii; mii->mii_instance++; sc->mii_flags |= MIIF_NOISOLATE; #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) #if 0 /* See above. */ ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), BMCR_ISO); #endif ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), MII_MEDIA_100_TX); mii_phy_reset(sc); /* * After PHY is reset, BMCR_AUTOEN will be cleared. * If it is *not* turned on here, mii_pollstat() will * lie about the active media until mii_mediachg() is * called(in rl_init()). */ PHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN); sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; device_printf(dev, " "); if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) kprintf("no media present"); else mii_phy_add_media(sc); kprintf("\n"); #undef ADD MIIBUS_MEDIAINIT(sc->mii_dev); return(0); } static int rlphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) { struct ifmedia_entry *ife = mii->mii_media.ifm_cur; /* * We can't isolate the RealTek PHY, so it has to be the only one! */ KASSERT(IFM_INST(ife->ifm_media) == sc->mii_inst, ("rlphy_service: can't isolate RealTek PHY")); switch (cmd) { case MII_POLLSTAT: break; case MII_MEDIACHG: /* * If the interface is not up, don't do anything. */ if ((mii->mii_ifp->if_flags & IFF_UP) == 0) break; if (IFM_SUBTYPE(ife->ifm_media) == IFM_100_T4) { /* * XXX Not supported as a manual setting right now. */ return (EINVAL); } mii_phy_set_media(sc); break; case MII_TICK: /* * 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; /* * The RealTek PHY's autonegotiation doesn't need to be * kicked; it continues in the background. */ break; } /* Update the media status. */ rlphy_status(sc); /* Callback if something changed. */ mii_phy_update(sc, cmd); return (0); } static void rlphy_status(struct mii_softc *sc) { struct mii_data *mii = sc->mii_pdata; int bmsr, bmcr, anlpar; 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, MII_BMCR); if (bmcr & BMCR_ISO) { mii->mii_media_active |= IFM_NONE; mii->mii_media_status = 0; return; } if (bmcr & BMCR_LOOP) mii->mii_media_active |= IFM_LOOP; if (bmcr & BMCR_AUTOEN) { device_t parent; /* * NWay autonegotiation takes the highest-order common * bit of the ANAR and ANLPAR (i.e. best media advertised * both by us and our link partner). */ if ((bmsr & BMSR_ACOMP) == 0) { /* Erg, still trying, I guess... */ mii->mii_media_active |= IFM_NONE; return; } if ((anlpar = PHY_READ(sc, MII_ANAR) & PHY_READ(sc, MII_ANLPAR))) { 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; 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. */ /* * The RealTek PHY supports non-NWAY link speed * detection, however it does not report the link * detection results via the ANLPAR or BMSR registers. * (What? RealTek doesn't do things the way everyone * else does? I'm just shocked, shocked I tell you.) * To determine the link speed, we have to do one * of two things: * * - If this is a standalone RealTek RTL8201(L) PHY, * we can determine the link speed by testing bit 0 * in the magic, vendor-specific register at offset * 0x19. * * - If this is a RealTek MAC with integrated PHY, we * can test the 'SPEED10' bit of the MAC's media status * register. */ parent = device_get_parent(sc->mii_dev); if (strcmp(device_get_name(parent), "rl") != 0) { if (PHY_READ(sc, 0x0019) & 0x01) mii->mii_media_active |= IFM_100_TX; else mii->mii_media_active |= IFM_10_T; } else { if (PHY_READ(sc, RL_MEDIASTAT) & RL_MEDIASTAT_SPEED10) mii->mii_media_active |= IFM_10_T; else mii->mii_media_active |= IFM_100_TX; } } else { mii->mii_media_active = mii->mii_media.ifm_cur->ifm_media; } }