tqphy.c revision 1.5
1 /* $NetBSD: tqphy.c,v 1.5 2000/01/27 16:44:30 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. All advertising materials mentioning features or use of this software 52 * must display the following acknowledgement: 53 * This product includes software developed by Manuel Bouyer. 54 * 4. The name of the author may not be used to endorse or promote products 55 * derived from this software without specific prior written permission. 56 * 57 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 58 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 59 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 60 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 61 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 62 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 63 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 64 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 65 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 66 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 67 */ 68 69 /* 70 * TDK TSC78Q2120 PHY driver 71 * 72 * Documentation available at http://www.tsc.tdk.com/lan/78Q2120.pdf . 73 */ 74 75 #include <sys/param.h> 76 #include <sys/systm.h> 77 #include <sys/kernel.h> 78 #include <sys/device.h> 79 #include <sys/malloc.h> 80 #include <sys/socket.h> 81 82 #include <net/if.h> 83 #include <net/if_media.h> 84 85 #include <dev/mii/mii.h> 86 #include <dev/mii/miivar.h> 87 #include <dev/mii/miidevs.h> 88 89 #include <dev/mii/tqphyreg.h> 90 91 int tqphymatch __P((struct device *, struct cfdata *, void *)); 92 void tqphyattach __P((struct device *, struct device *, void *)); 93 94 struct cfattach tqphy_ca = { 95 sizeof(struct mii_softc), tqphymatch, tqphyattach, mii_detach, 96 mii_activate 97 }; 98 99 int tqphy_service __P((struct mii_softc *, struct mii_data *, int)); 100 void tqphy_status __P((struct mii_softc *)); 101 102 int 103 tqphymatch(parent, match, aux) 104 struct device *parent; 105 struct cfdata *match; 106 void *aux; 107 { 108 struct mii_attach_args *ma = aux; 109 110 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_TSC) 111 switch MII_MODEL(ma->mii_id2) { 112 case MII_MODEL_TSC_78Q2120: 113 /* case MII_MODEL_TSC_78Q2121: */ 114 return (10); 115 } 116 117 return (0); 118 } 119 120 void 121 tqphyattach(parent, self, aux) 122 struct device *parent, *self; 123 void *aux; 124 { 125 struct mii_softc *sc = (struct mii_softc *)self; 126 struct mii_attach_args *ma = aux; 127 struct mii_data *mii = ma->mii_data; 128 129 printf(": %s, rev. %d\n", MII_STR_TSC_78Q2120, 130 MII_REV(ma->mii_id2)); 131 132 sc->mii_inst = mii->mii_instance; 133 sc->mii_phy = ma->mii_phyno; 134 sc->mii_service = tqphy_service; 135 sc->mii_pdata = mii; 136 137 /* 138 * Apparently, we can't do loopback on this PHY. 139 */ 140 sc->mii_flags |= MIIF_NOLOOP; 141 142 mii_phy_reset(sc); 143 144 sc->mii_capabilities = 145 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 146 printf("%s: ", sc->mii_dev.dv_xname); 147 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 148 printf("no media present"); 149 else 150 mii_add_media(sc); 151 printf("\n"); 152 } 153 154 int 155 tqphy_service(sc, mii, cmd) 156 struct mii_softc *sc; 157 struct mii_data *mii; 158 int cmd; 159 { 160 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 161 int reg; 162 163 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 164 return (ENXIO); 165 166 switch (cmd) { 167 case MII_POLLSTAT: 168 /* 169 * If we're not polling our PHY instance, just return. 170 */ 171 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 172 return (0); 173 break; 174 175 case MII_MEDIACHG: 176 /* 177 * If the media indicates a different PHY instance, 178 * isolate ourselves. 179 */ 180 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 181 reg = PHY_READ(sc, MII_BMCR); 182 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 183 return (0); 184 } 185 186 /* 187 * If the interface is not up, don't do anything. 188 */ 189 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 190 break; 191 192 switch (IFM_SUBTYPE(ife->ifm_media)) { 193 case IFM_AUTO: 194 /* 195 * If we're already in auto mode, just return. 196 */ 197 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 198 return (0); 199 (void) mii_phy_auto(sc, 1); 200 break; 201 default: 202 mii_phy_setmedia(sc); 203 } 204 break; 205 206 case MII_TICK: 207 /* 208 * If we're not currently selected, just return. 209 */ 210 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 211 return (0); 212 213 /* 214 * Only used for autonegotiation. 215 */ 216 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 217 return (0); 218 219 /* 220 * Is the interface even up? 221 */ 222 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 223 return (0); 224 225 /* 226 * Check to see if we have link. If we do, we don't 227 * need to restart the autonegotiation process. Read 228 * the BMSR twice in case it's latched. 229 */ 230 reg = PHY_READ(sc, MII_BMSR) | 231 PHY_READ(sc, MII_BMSR); 232 if (reg & BMSR_LINK) 233 return (0); 234 235 /* 236 * Only retry autonegotiation every 5 seconds. 237 */ 238 if (++sc->mii_ticks != 5) 239 return (0); 240 241 sc->mii_ticks = 0; 242 mii_phy_reset(sc); 243 if (mii_phy_auto(sc, 0) == EJUSTRETURN) 244 return (0); 245 break; 246 247 case MII_DOWN: 248 mii_phy_down(sc); 249 return (0); 250 } 251 252 /* Update the media status. */ 253 tqphy_status(sc); 254 255 /* Callback if something changed. */ 256 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 257 (*mii->mii_statchg)(sc->mii_dev.dv_parent); 258 sc->mii_active = mii->mii_media_active; 259 } 260 return (0); 261 } 262 263 void 264 tqphy_status(sc) 265 struct mii_softc *sc; 266 { 267 struct mii_data *mii = sc->mii_pdata; 268 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 269 int bmsr, bmcr, diag; 270 271 mii->mii_media_status = IFM_AVALID; 272 mii->mii_media_active = IFM_ETHER; 273 274 bmsr = PHY_READ(sc, MII_BMSR) | 275 PHY_READ(sc, MII_BMSR); 276 if (bmsr & BMSR_LINK) 277 mii->mii_media_status |= IFM_ACTIVE; 278 279 bmcr = PHY_READ(sc, MII_BMCR); 280 if (bmcr & BMCR_ISO) { 281 mii->mii_media_active |= IFM_NONE; 282 mii->mii_media_status = 0; 283 return; 284 } 285 286 if (bmcr & BMCR_LOOP) 287 mii->mii_media_active |= IFM_LOOP; 288 289 if (bmcr & BMCR_AUTOEN) { 290 if ((bmsr & BMSR_ACOMP) == 0) { 291 /* Erg, still trying, I guess... */ 292 mii->mii_media_active |= IFM_NONE; 293 return; 294 } 295 diag = PHY_READ(sc, MII_TQPHY_DIAG); 296 if (diag & DIAG_RATE) 297 mii->mii_media_active |= IFM_100_TX; 298 else 299 mii->mii_media_active |= IFM_10_T; 300 if (diag & DIAG_DPLX) 301 mii->mii_media_active |= IFM_FDX; 302 } else 303 mii->mii_media_active = ife->ifm_media; 304 } 305
Indexes created Wed Sep 24 15:09:51 GMT 2025