1 /* $OpenBSD: tqphy.c,v 1.15 2010/07/23 07:47:13 jsg Exp $ */ 2 /* $NetBSD: tqphy.c,v 1.9 2000/02/02 23:34:57 thorpej Exp $ */ 3 4 /* 5 * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 10 * NASA Ames Research Center. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 46 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 47 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 48 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 49 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 50 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 51 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 52 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 53 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 54 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 55 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 56 */ 57 58 /* 59 * TDK TSC78Q2120 PHY driver 60 * 61 * Documentation available at http://www.tsc.tdk.com/lan/78Q2120.pdf . 62 */ 63 64 #include <sys/param.h> 65 #include <sys/systm.h> 66 #include <sys/kernel.h> 67 #include <sys/device.h> 68 #include <sys/socket.h> 69 70 #include <net/if.h> 71 #include <net/if_media.h> 72 73 #include <dev/mii/mii.h> 74 #include <dev/mii/miivar.h> 75 #include <dev/mii/miidevs.h> 76 77 #include <dev/mii/tqphyreg.h> 78 79 int tqphymatch(struct device *, void *, void *); 80 void tqphyattach(struct device *, struct device *, void *); 81 int tqphydetach(struct device *, int); 82 83 struct cfattach tqphy_ca = { 84 sizeof(struct mii_softc), tqphymatch, tqphyattach, mii_phy_detach, 85 mii_phy_activate 86 }; 87 88 struct cfdriver tqphy_cd = { 89 NULL, "tqphy", DV_DULL 90 }; 91 92 int tqphy_service(struct mii_softc *, struct mii_data *, int); 93 void tqphy_status(struct mii_softc *); 94 95 const struct mii_phy_funcs tqphy_funcs = { 96 tqphy_service, tqphy_status, mii_phy_reset, 97 }; 98 99 static const struct mii_phydesc tqphys[] = { 100 { MII_OUI_TDK, MII_MODEL_TDK_78Q2120, 101 MII_STR_TDK_78Q2120 }, 102 103 { 0, 0, 104 NULL }, 105 }; 106 107 int 108 tqphymatch(struct device *parent, void *match, void *aux) 109 { 110 struct mii_attach_args *ma = aux; 111 112 if (mii_phy_match(ma, tqphys) != NULL) 113 return (10); 114 115 return (0); 116 } 117 118 void 119 tqphyattach(struct device *parent, struct device *self, void *aux) 120 { 121 struct mii_softc *sc = (struct mii_softc *)self; 122 struct mii_attach_args *ma = aux; 123 struct mii_data *mii = ma->mii_data; 124 const struct mii_phydesc *mpd; 125 126 mpd = mii_phy_match(ma, tqphys); 127 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 128 129 sc->mii_inst = mii->mii_instance; 130 sc->mii_phy = ma->mii_phyno; 131 sc->mii_funcs = &tqphy_funcs; 132 sc->mii_pdata = mii; 133 sc->mii_flags = ma->mii_flags; 134 135 sc->mii_flags |= MIIF_NOLOOP; 136 137 PHY_RESET(sc); 138 139 sc->mii_capabilities = 140 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 141 if (sc->mii_capabilities & BMSR_MEDIAMASK) 142 mii_phy_add_media(sc); 143 } 144 145 int 146 tqphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 147 { 148 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 149 int reg; 150 151 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 152 return (ENXIO); 153 154 switch (cmd) { 155 case MII_POLLSTAT: 156 /* 157 * If we're not polling our PHY instance, just return. 158 */ 159 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 160 return (0); 161 break; 162 163 case MII_MEDIACHG: 164 /* 165 * If the media indicates a different PHY instance, 166 * isolate ourselves. 167 */ 168 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 169 reg = PHY_READ(sc, MII_BMCR); 170 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 171 return (0); 172 } 173 174 /* 175 * If the interface is not up, don't do anything. 176 */ 177 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 178 break; 179 180 mii_phy_setmedia(sc); 181 break; 182 183 case MII_TICK: 184 /* 185 * If we're not currently selected, just return. 186 */ 187 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 188 return (0); 189 190 if (mii_phy_tick(sc) == EJUSTRETURN) 191 return (0); 192 break; 193 194 case MII_DOWN: 195 mii_phy_down(sc); 196 return (0); 197 } 198 199 /* Update the media status. */ 200 mii_phy_status(sc); 201 202 /* Callback if something changed. */ 203 mii_phy_update(sc, cmd); 204 return (0); 205 } 206 207 void 208 tqphy_status(struct mii_softc *sc) 209 { 210 struct mii_data *mii = sc->mii_pdata; 211 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 212 int bmsr, bmcr, diag; 213 214 mii->mii_media_status = IFM_AVALID; 215 mii->mii_media_active = IFM_ETHER; 216 217 bmsr = PHY_READ(sc, MII_BMSR) | 218 PHY_READ(sc, MII_BMSR); 219 if (bmsr & BMSR_LINK) 220 mii->mii_media_status |= IFM_ACTIVE; 221 222 bmcr = PHY_READ(sc, MII_BMCR); 223 if (bmcr & BMCR_ISO) { 224 mii->mii_media_active |= IFM_NONE; 225 mii->mii_media_status = 0; 226 return; 227 } 228 229 if (bmcr & BMCR_LOOP) 230 mii->mii_media_active |= IFM_LOOP; 231 232 if (bmcr & BMCR_AUTOEN) { 233 if ((bmsr & BMSR_ACOMP) == 0) { 234 /* Erg, still trying, I guess... */ 235 mii->mii_media_active |= IFM_NONE; 236 return; 237 } 238 diag = PHY_READ(sc, MII_TQPHY_DIAG); 239 if (diag & DIAG_RATE) 240 mii->mii_media_active |= IFM_100_TX; 241 else 242 mii->mii_media_active |= IFM_10_T; 243 244 if (diag & DIAG_DPLX) 245 mii->mii_media_active |= IFM_FDX; 246 else 247 mii->mii_media_active |= IFM_HDX; 248 } else 249 mii->mii_media_active = ife->ifm_media; 250 } 251