tlphy.c revision 1.19
1 /* $NetBSD: tlphy.c,v 1.19 1999/11/03 22:30:32 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 * Driver for Texas Instruments's ThunderLAN PHYs 71 */ 72 73 #include <sys/param.h> 74 #include <sys/systm.h> 75 #include <sys/kernel.h> 76 #include <sys/device.h> 77 #include <sys/socket.h> 78 #include <sys/errno.h> 79 80 #include <machine/bus.h> 81 82 #include <net/if.h> 83 #include <net/if_media.h> 84 85 #include <net/if_ether.h> 86 87 #include <dev/mii/mii.h> 88 #include <dev/mii/miivar.h> 89 #include <dev/mii/miidevs.h> 90 91 #include <dev/i2c/i2c_bus.h> 92 93 #include <dev/mii/tlphyreg.h> 94 #include <dev/mii/tlphyvar.h> 95 96 /* ThunderLAN PHY can only be on a ThunderLAN */ 97 #include <dev/pci/if_tlvar.h> 98 99 struct tlphy_softc { 100 struct mii_softc sc_mii; /* generic PHY */ 101 int sc_tlphycap; 102 int sc_need_acomp; 103 }; 104 105 int tlphymatch __P((struct device *, struct cfdata *, void *)); 106 void tlphyattach __P((struct device *, struct device *, void *)); 107 108 struct cfattach tlphy_ca = { 109 sizeof(struct tlphy_softc), tlphymatch, tlphyattach 110 }; 111 112 int tlphy_service __P((struct mii_softc *, struct mii_data *, int)); 113 int tlphy_auto __P((struct tlphy_softc *, int)); 114 void tlphy_acomp __P((struct tlphy_softc *)); 115 void tlphy_status __P((struct tlphy_softc *)); 116 117 int 118 tlphymatch(parent, match, aux) 119 struct device *parent; 120 struct cfdata *match; 121 void *aux; 122 { 123 struct mii_attach_args *ma = aux; 124 125 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxTI && 126 MII_MODEL(ma->mii_id2) == MII_MODEL_xxTI_TLAN10T) 127 return (10); 128 129 return (0); 130 } 131 132 void 133 tlphyattach(parent, self, aux) 134 struct device *parent, *self; 135 void *aux; 136 { 137 struct tlphy_softc *sc = (struct tlphy_softc *)self; 138 struct tl_softc *tlsc = (struct tl_softc *)self->dv_parent; 139 struct mii_attach_args *ma = aux; 140 struct mii_data *mii = ma->mii_data; 141 const char *sep = ""; 142 143 printf(": %s, rev. %d\n", MII_STR_xxTI_TLAN10T, 144 MII_REV(ma->mii_id2)); 145 146 sc->sc_mii.mii_inst = mii->mii_instance; 147 sc->sc_mii.mii_phy = ma->mii_phyno; 148 sc->sc_mii.mii_service = tlphy_service; 149 sc->sc_mii.mii_pdata = mii; 150 151 mii_phy_reset(&sc->sc_mii); 152 153 /* 154 * Note that if we're on a device that also supports 100baseTX, 155 * we are not going to want to use the built-in 10baseT port, 156 * since there will be another PHY on the MII wired up to the 157 * UTP connector. The parent indicates this to us by specifying 158 * the TLPHY_MEDIA_NO_10_T bit. 159 */ 160 sc->sc_tlphycap = tlsc->tl_product->tp_tlphymedia; 161 if ((sc->sc_tlphycap & TLPHY_MEDIA_NO_10_T) == 0) 162 sc->sc_mii.mii_capabilities = 163 PHY_READ(&sc->sc_mii, MII_BMSR) & ma->mii_capmask; 164 else 165 sc->sc_mii.mii_capabilities = 0; 166 167 168 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 169 #define PRINT(s) printf("%s%s", sep, s); sep = ", " 170 171 printf("%s: ", sc->sc_mii.mii_dev.dv_xname); 172 if (sc->sc_tlphycap) { 173 if (sc->sc_tlphycap & TLPHY_MEDIA_10_2) { 174 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_2, 0, 175 sc->sc_mii.mii_inst), 0); 176 PRINT("10base2"); 177 } else if (sc->sc_tlphycap & TLPHY_MEDIA_10_5) { 178 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_5, 0, 179 sc->sc_mii.mii_inst), 0); 180 PRINT("10base5"); 181 } 182 } 183 if (sc->sc_mii.mii_capabilities & BMSR_MEDIAMASK) { 184 printf(sep); 185 mii_add_media(&sc->sc_mii); 186 } else if ((sc->sc_tlphycap & 187 (TLPHY_MEDIA_10_2 | TLPHY_MEDIA_10_5)) == 0) 188 printf("no media present"); 189 printf("\n"); 190 #undef ADD 191 #undef PRINT 192 } 193 194 int 195 tlphy_service(self, mii, cmd) 196 struct mii_softc *self; 197 struct mii_data *mii; 198 int cmd; 199 { 200 struct tlphy_softc *sc = (struct tlphy_softc *)self; 201 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 202 int reg; 203 204 if ((sc->sc_mii.mii_flags & MIIF_DOINGAUTO) == 0 && sc->sc_need_acomp) 205 tlphy_acomp(sc); 206 207 switch (cmd) { 208 case MII_POLLSTAT: 209 /* 210 * If we're not polling our PHY instance, just return. 211 */ 212 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) 213 return (0); 214 break; 215 216 case MII_MEDIACHG: 217 /* 218 * If the media indicates a different PHY instance, 219 * isolate ourselves. 220 */ 221 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) { 222 reg = PHY_READ(&sc->sc_mii, MII_BMCR); 223 PHY_WRITE(&sc->sc_mii, MII_BMCR, reg | BMCR_ISO); 224 return (0); 225 } 226 227 /* 228 * If the interface is not up, don't do anything. 229 */ 230 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 231 break; 232 233 switch (IFM_SUBTYPE(ife->ifm_media)) { 234 case IFM_AUTO: 235 /* 236 * The ThunderLAN PHY doesn't self-configure after 237 * an autonegotiation cycle, so there's no such 238 * thing as "already in auto mode". 239 */ 240 (void) tlphy_auto(sc, 1); 241 break; 242 case IFM_10_2: 243 case IFM_10_5: 244 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0); 245 PHY_WRITE(&sc->sc_mii, MII_TLPHY_CTRL, CTRL_AUISEL); 246 delay(100000); 247 break; 248 default: 249 PHY_WRITE(&sc->sc_mii, MII_TLPHY_CTRL, 0); 250 delay(100000); 251 mii_phy_setmedia(&sc->sc_mii); 252 } 253 break; 254 255 case MII_TICK: 256 /* 257 * If we're not currently selected, just return. 258 */ 259 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) 260 return (0); 261 262 /* 263 * Only used for autonegotiation. 264 */ 265 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 266 return (0); 267 268 /* 269 * Is the interface even up? 270 */ 271 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 272 return (0); 273 274 /* 275 * Check to see if we have link. If we do, we don't 276 * need to restart the autonegotiation process. Read 277 * the BMSR twice in case it's latched. 278 * 279 * XXX WHAT ABOUT CHECKING LINK ON THE BNC/AUI?! 280 */ 281 reg = PHY_READ(&sc->sc_mii, MII_BMSR) | 282 PHY_READ(&sc->sc_mii, MII_BMSR); 283 if (reg & BMSR_LINK) 284 return (0); 285 286 /* 287 * Only retry autonegotiation every 5 seconds. 288 */ 289 if (++sc->sc_mii.mii_ticks != 5) 290 return (0); 291 292 sc->sc_mii.mii_ticks = 0; 293 mii_phy_reset(&sc->sc_mii); 294 if (tlphy_auto(sc, 0) == EJUSTRETURN) 295 return (0); 296 break; 297 } 298 299 /* Update the media status. */ 300 tlphy_status(sc); 301 302 /* Callback if something changed. */ 303 if (sc->sc_mii.mii_active != mii->mii_media_active || 304 cmd == MII_MEDIACHG) { 305 (*mii->mii_statchg)(sc->sc_mii.mii_dev.dv_parent); 306 sc->sc_mii.mii_active = mii->mii_media_active; 307 } 308 return (0); 309 } 310 311 void 312 tlphy_status(sc) 313 struct tlphy_softc *sc; 314 { 315 struct mii_data *mii = sc->sc_mii.mii_pdata; 316 struct tl_softc *tlsc = (struct tl_softc *)sc->sc_mii.mii_dev.dv_parent; 317 int bmsr, bmcr, tlctrl; 318 319 mii->mii_media_status = IFM_AVALID; 320 mii->mii_media_active = IFM_ETHER; 321 322 bmcr = PHY_READ(&sc->sc_mii, MII_BMCR); 323 if (bmcr & BMCR_ISO) { 324 mii->mii_media_active |= IFM_NONE; 325 mii->mii_media_status = 0; 326 return; 327 } 328 329 tlctrl = PHY_READ(&sc->sc_mii, MII_TLPHY_CTRL); 330 if (tlctrl & CTRL_AUISEL) { 331 if (sc->sc_tlphycap & TLPHY_MEDIA_10_2) 332 mii->mii_media_active |= IFM_10_2; 333 else if (sc->sc_tlphycap & TLPHY_MEDIA_10_5) 334 mii->mii_media_active |= IFM_10_5; 335 else 336 printf("%s: AUI selected with no matching media !\n", 337 sc->sc_mii.mii_dev.dv_xname); 338 if (tlsc->tl_flags & TL_IFACT) 339 mii->mii_media_status |= IFM_ACTIVE; 340 return; 341 } 342 343 bmsr = PHY_READ(&sc->sc_mii, MII_BMSR) | 344 PHY_READ(&sc->sc_mii, MII_BMSR); 345 if (bmsr & BMSR_LINK) 346 mii->mii_media_status |= IFM_ACTIVE; 347 348 if (bmcr & BMCR_LOOP) 349 mii->mii_media_active |= IFM_LOOP; 350 351 /* 352 * Grr, braindead ThunderLAN PHY doesn't have any way to 353 * tell which media is actually active. (Note it also 354 * doesn't self-configure after autonegotiation.) We 355 * just have to report what's in the BMCR. 356 */ 357 if (bmcr & BMCR_FDX) 358 mii->mii_media_active |= IFM_FDX; 359 mii->mii_media_active |= IFM_10_T; 360 } 361 362 int 363 tlphy_auto(sc, waitfor) 364 struct tlphy_softc *sc; 365 int waitfor; 366 { 367 int error; 368 369 switch ((error = mii_phy_auto(&sc->sc_mii, waitfor))) { 370 case EIO: 371 /* 372 * Just assume we're not in full-duplex mode. 373 * XXX Check link and try AUI/BNC? 374 */ 375 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0); 376 break; 377 378 case EJUSTRETURN: 379 /* Flag that we need to program when it completes. */ 380 sc->sc_need_acomp = 1; 381 break; 382 383 default: 384 tlphy_acomp(sc); 385 } 386 387 return (error); 388 } 389 390 void 391 tlphy_acomp(sc) 392 struct tlphy_softc *sc; 393 { 394 int aner, anlpar; 395 396 sc->sc_need_acomp = 0; 397 398 /* 399 * Grr, braindead ThunderLAN PHY doesn't self-configure 400 * after autonegotiation. We have to do it ourselves 401 * based on the link partner status. 402 */ 403 404 aner = PHY_READ(&sc->sc_mii, MII_ANER); 405 if (aner & ANER_LPAN) { 406 anlpar = PHY_READ(&sc->sc_mii, MII_ANLPAR) & 407 PHY_READ(&sc->sc_mii, MII_ANAR); 408 if (anlpar & ANAR_10_FD) { 409 PHY_WRITE(&sc->sc_mii, MII_BMCR, BMCR_FDX); 410 return; 411 } 412 } 413 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0); 414 } 415
Indexes created Tue Sep 23 14:10:03 GMT 2025