/* $NetBSD: rdcphy.c,v 1.8 2020/04/08 03:01:58 msaitoh Exp $ */ /*- * Copyright (c) 2010, Pyun YongHyeon * 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 unmodified, 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 THE AUTHOR OR CONTRIBUTORS 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/rdcphy.c,v 1.1 2010/12/30 23:50:25 yongari Exp */ /* * Driver for the RDC Semiconductor R6040 10/100 PHY. */ #include __KERNEL_RCSID(0, "$NetBSD: rdcphy.c,v 1.8 2020/04/08 03:01:58 msaitoh Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include struct rdcphy_softc { struct mii_softc sc_mii; int sc_mii_link_tick; #define RDCPHY_MANNEG_TICK 3 }; static int rdcphymatch(device_t, cfdata_t, void *); static void rdcphyattach(device_t, device_t, void *); CFATTACH_DECL_NEW(rdcphy, sizeof(struct rdcphy_softc), rdcphymatch, rdcphyattach, mii_phy_detach, mii_phy_activate); static int rdcphy_service(struct mii_softc *, struct mii_data *, int); static void rdcphy_status(struct mii_softc *); static const struct mii_phy_funcs rdcphy_funcs = { rdcphy_service, rdcphy_status, mii_phy_reset, }; static const struct mii_phydesc rdcphys[] = { MII_PHY_DESC(xxRDC, R6040), MII_PHY_DESC(xxRDC, R6040_2), MII_PHY_DESC(xxRDC, R6040_3), MII_PHY_END, }; static int rdcphymatch(device_t parent, cfdata_t match, void *aux) { struct mii_attach_args *ma = aux; if (mii_phy_match(ma, rdcphys) != NULL) return 10; return 0; } static void rdcphyattach(device_t parent, device_t self, void *aux) { struct rdcphy_softc *rsc = device_private(self); struct mii_softc *sc = &rsc->sc_mii; struct mii_attach_args *ma = aux; struct mii_data *mii = ma->mii_data; const struct mii_phydesc *mpd; mpd = mii_phy_match(ma, rdcphys); aprint_naive(": Media interface\n"); aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); sc->mii_dev = self; sc->mii_inst = mii->mii_instance; sc->mii_phy = ma->mii_phyno; sc->mii_funcs = &rdcphy_funcs; sc->mii_pdata = mii; sc->mii_flags = ma->mii_flags; mii_lock(mii); PHY_RESET(sc); PHY_READ(sc, MII_BMSR, &sc->mii_capabilities); sc->mii_capabilities &= ma->mii_capmask; if (sc->mii_capabilities & BMSR_EXTSTAT) PHY_READ(sc, MII_EXTSR, &sc->mii_extcapabilities); mii_unlock(mii); mii_phy_add_media(sc); } static int rdcphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) { struct rdcphy_softc *rsc = (struct rdcphy_softc *)sc; struct ifmedia_entry *ife = mii->mii_media.ifm_cur; KASSERT(mii_locked(mii)); 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; mii_phy_setmedia(sc); switch (IFM_SUBTYPE(ife->ifm_media)) { case IFM_100_TX: case IFM_10_T: /* * Report fake lost link event to parent driver. This * will stop MAC of parent driver and make it possible * to reconfigure MAC after completion of link * establishment. * Note, the parent MAC seems to require restarting MAC * when underlying any PHY configuration was changed * even if the resolved speed/duplex was not changed at * all. */ mii->mii_media_status = 0; mii->mii_media_active = IFM_ETHER | IFM_NONE; rsc->sc_mii_link_tick = RDCPHY_MANNEG_TICK; /* Immediately report link down. */ mii_phy_update(sc, MII_MEDIACHG); return 0; default: break; } break; case MII_TICK: if (mii_phy_tick(sc) == EJUSTRETURN) return 0; if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) { /* * It seems the PHY hardware does not correctly report * link status changes when manual link configuration * is in progress. It is also possible for the PHY to * complete establishing a link within one second such * that mii(4) did not notice the link change. * To workaround the issue, emulate lost link event and * wait for 3 seconds when manual link configuration * is in progress. 3 seconds would be long enough to * absorb transient link flips. */ if (rsc->sc_mii_link_tick > 0) { rsc->sc_mii_link_tick--; return 0; } } break; } /* Update the media status. */ rdcphy_status(sc); /* Callback if something changed. */ mii_phy_update(sc, cmd); return 0; } static void rdcphy_status(struct mii_softc *sc) { struct mii_data *mii = sc->mii_pdata; uint16_t bmsr, bmcr, physts; KASSERT(mii_locked(mii)); mii->mii_media_status = IFM_AVALID; mii->mii_media_active = IFM_ETHER; PHY_READ(sc, MII_BMSR, &bmsr); PHY_READ(sc, MII_BMSR, &bmsr); PHY_READ(sc, MII_RDCPHY_STATUS, &physts); if ((physts & STATUS_LINK_UP) != 0) mii->mii_media_status |= IFM_ACTIVE; PHY_READ(sc, MII_BMCR, &bmcr); if ((bmcr & BMCR_ISO) != 0) { mii->mii_media_active |= IFM_NONE; mii->mii_media_status = 0; return; } if ((bmcr & BMCR_LOOP) != 0) mii->mii_media_active |= IFM_LOOP; if ((bmcr & BMCR_AUTOEN) != 0) { if ((bmsr & BMSR_ACOMP) == 0) { /* Erg, still trying, I guess... */ mii->mii_media_active |= IFM_NONE; return; } } switch (physts & STATUS_SPEED_MASK) { case STATUS_SPEED_100: mii->mii_media_active |= IFM_100_TX; break; case STATUS_SPEED_10: mii->mii_media_active |= IFM_10_T; break; default: mii->mii_media_active |= IFM_NONE; return; } if ((physts & STATUS_FULL_DUPLEX) != 0) mii->mii_media_active |= IFM_FDX | mii_phy_flowstatus(sc); else mii->mii_media_active |= IFM_HDX; }