tlphy.c revision 1.24
1 /* $NetBSD: tlphy.c,v 1.24 2000/02/02 17:50:46 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, mii_phy_detach, 110 mii_phy_activate 111 }; 112 113 int tlphy_service __P((struct mii_softc *, struct mii_data *, int)); 114 int tlphy_auto __P((struct tlphy_softc *, int)); 115 void tlphy_acomp __P((struct tlphy_softc *)); 116 void tlphy_status __P((struct mii_softc *)); 117 118 int 119 tlphymatch(parent, match, aux) 120 struct device *parent; 121 struct cfdata *match; 122 void *aux; 123 { 124 struct mii_attach_args *ma = aux; 125 126 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxTI && 127 MII_MODEL(ma->mii_id2) == MII_MODEL_xxTI_TLAN10T) 128 return (10); 129 130 return (0); 131 } 132 133 void 134 tlphyattach(parent, self, aux) 135 struct device *parent, *self; 136 void *aux; 137 { 138 struct tlphy_softc *sc = (struct tlphy_softc *)self; 139 struct tl_softc *tlsc = (struct tl_softc *)self->dv_parent; 140 struct mii_attach_args *ma = aux; 141 struct mii_data *mii = ma->mii_data; 142 const char *sep = ""; 143 144 printf(": %s, rev. %d\n", MII_STR_xxTI_TLAN10T, 145 MII_REV(ma->mii_id2)); 146 147 sc->sc_mii.mii_inst = mii->mii_instance; 148 sc->sc_mii.mii_phy = ma->mii_phyno; 149 sc->sc_mii.mii_service = tlphy_service; 150 sc->sc_mii.mii_status = tlphy_status; 151 sc->sc_mii.mii_pdata = mii; 152 sc->sc_mii.mii_flags = mii->mii_flags; 153 154 mii_phy_reset(&sc->sc_mii); 155 156 /* 157 * Note that if we're on a device that also supports 100baseTX, 158 * we are not going to want to use the built-in 10baseT port, 159 * since there will be another PHY on the MII wired up to the 160 * UTP connector. The parent indicates this to us by specifying 161 * the TLPHY_MEDIA_NO_10_T bit. 162 */ 163 sc->sc_tlphycap = tlsc->tl_product->tp_tlphymedia; 164 if ((sc->sc_tlphycap & TLPHY_MEDIA_NO_10_T) == 0) 165 sc->sc_mii.mii_capabilities = 166 PHY_READ(&sc->sc_mii, MII_BMSR) & ma->mii_capmask; 167 else 168 sc->sc_mii.mii_capabilities = 0; 169 170 171 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 172 #define PRINT(s) printf("%s%s", sep, s); sep = ", " 173 174 printf("%s: ", sc->sc_mii.mii_dev.dv_xname); 175 if (sc->sc_tlphycap) { 176 if (sc->sc_tlphycap & TLPHY_MEDIA_10_2) { 177 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_2, 0, 178 sc->sc_mii.mii_inst), 0); 179 PRINT("10base2"); 180 } else if (sc->sc_tlphycap & TLPHY_MEDIA_10_5) { 181 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_5, 0, 182 sc->sc_mii.mii_inst), 0); 183 PRINT("10base5"); 184 } 185 } 186 if (sc->sc_mii.mii_capabilities & BMSR_MEDIAMASK) { 187 printf(sep); 188 mii_phy_add_media(&sc->sc_mii); 189 } else if ((sc->sc_tlphycap & 190 (TLPHY_MEDIA_10_2 | TLPHY_MEDIA_10_5)) == 0) 191 printf("no media present"); 192 printf("\n"); 193 #undef ADD 194 #undef PRINT 195 } 196 197 int 198 tlphy_service(self, mii, cmd) 199 struct mii_softc *self; 200 struct mii_data *mii; 201 int cmd; 202 { 203 struct tlphy_softc *sc = (struct tlphy_softc *)self; 204 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 205 int reg; 206 207 if ((sc->sc_mii.mii_dev.dv_flags & DVF_ACTIVE) == 0) 208 return (ENXIO); 209 210 if ((sc->sc_mii.mii_flags & MIIF_DOINGAUTO) == 0 && sc->sc_need_acomp) 211 tlphy_acomp(sc); 212 213 switch (cmd) { 214 case MII_POLLSTAT: 215 /* 216 * If we're not polling our PHY instance, just return. 217 */ 218 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) 219 return (0); 220 break; 221 222 case MII_MEDIACHG: 223 /* 224 * If the media indicates a different PHY instance, 225 * isolate ourselves. 226 */ 227 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) { 228 reg = PHY_READ(&sc->sc_mii, MII_BMCR); 229 PHY_WRITE(&sc->sc_mii, MII_BMCR, reg | BMCR_ISO); 230 return (0); 231 } 232 233 /* 234 * If the interface is not up, don't do anything. 235 */ 236 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 237 break; 238 239 switch (IFM_SUBTYPE(ife->ifm_media)) { 240 case IFM_AUTO: 241 /* 242 * The ThunderLAN PHY doesn't self-configure after 243 * an autonegotiation cycle, so there's no such 244 * thing as "already in auto mode". 245 */ 246 (void) tlphy_auto(sc, 1); 247 break; 248 case IFM_10_2: 249 case IFM_10_5: 250 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0); 251 PHY_WRITE(&sc->sc_mii, MII_TLPHY_CTRL, CTRL_AUISEL); 252 delay(100000); 253 break; 254 default: 255 PHY_WRITE(&sc->sc_mii, MII_TLPHY_CTRL, 0); 256 delay(100000); 257 mii_phy_setmedia(&sc->sc_mii); 258 } 259 break; 260 261 case MII_TICK: 262 /* 263 * If we're not currently selected, just return. 264 */ 265 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) 266 return (0); 267 268 /* 269 * Only used for autonegotiation. 270 */ 271 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 272 return (0); 273 274 /* 275 * Is the interface even up? 276 */ 277 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 278 return (0); 279 280 /* 281 * Check to see if we have link. If we do, we don't 282 * need to restart the autonegotiation process. Read 283 * the BMSR twice in case it's latched. 284 * 285 * XXX WHAT ABOUT CHECKING LINK ON THE BNC/AUI?! 286 */ 287 reg = PHY_READ(&sc->sc_mii, MII_BMSR) | 288 PHY_READ(&sc->sc_mii, MII_BMSR); 289 if (reg & BMSR_LINK) 290 return (0); 291 292 /* 293 * Only retry autonegotiation every 5 seconds. 294 */ 295 if (++sc->sc_mii.mii_ticks != 5) 296 return (0); 297 298 sc->sc_mii.mii_ticks = 0; 299 mii_phy_reset(&sc->sc_mii); 300 if (tlphy_auto(sc, 0) == EJUSTRETURN) 301 return (0); 302 break; 303 304 case MII_DOWN: 305 mii_phy_down(&sc->sc_mii); 306 return (0); 307 } 308 309 /* Update the media status. */ 310 mii_phy_status(&sc->sc_mii); 311 312 /* Callback if something changed. */ 313 if (sc->sc_mii.mii_active != mii->mii_media_active || 314 cmd == MII_MEDIACHG) { 315 (*mii->mii_statchg)(sc->sc_mii.mii_dev.dv_parent); 316 sc->sc_mii.mii_active = mii->mii_media_active; 317 } 318 return (0); 319 } 320 321 void 322 tlphy_status(physc) 323 struct mii_softc *physc; 324 { 325 struct tlphy_softc *sc = (void *) physc; 326 struct mii_data *mii = sc->sc_mii.mii_pdata; 327 struct tl_softc *tlsc = (struct tl_softc *)sc->sc_mii.mii_dev.dv_parent; 328 int bmsr, bmcr, tlctrl; 329 330 mii->mii_media_status = IFM_AVALID; 331 mii->mii_media_active = IFM_ETHER; 332 333 bmcr = PHY_READ(&sc->sc_mii, MII_BMCR); 334 if (bmcr & BMCR_ISO) { 335 mii->mii_media_active |= IFM_NONE; 336 mii->mii_media_status = 0; 337 return; 338 } 339 340 tlctrl = PHY_READ(&sc->sc_mii, MII_TLPHY_CTRL); 341 if (tlctrl & CTRL_AUISEL) { 342 if (sc->sc_tlphycap & TLPHY_MEDIA_10_2) 343 mii->mii_media_active |= IFM_10_2; 344 else if (sc->sc_tlphycap & TLPHY_MEDIA_10_5) 345 mii->mii_media_active |= IFM_10_5; 346 else 347 printf("%s: AUI selected with no matching media !\n", 348 sc->sc_mii.mii_dev.dv_xname); 349 if (tlsc->tl_flags & TL_IFACT) 350 mii->mii_media_status |= IFM_ACTIVE; 351 return; 352 } 353 354 bmsr = PHY_READ(&sc->sc_mii, MII_BMSR) | 355 PHY_READ(&sc->sc_mii, MII_BMSR); 356 if (bmsr & BMSR_LINK) 357 mii->mii_media_status |= IFM_ACTIVE; 358 359 if (bmcr & BMCR_LOOP) 360 mii->mii_media_active |= IFM_LOOP; 361 362 /* 363 * Grr, braindead ThunderLAN PHY doesn't have any way to 364 * tell which media is actually active. (Note it also 365 * doesn't self-configure after autonegotiation.) We 366 * just have to report what's in the BMCR. 367 */ 368 if (bmcr & BMCR_FDX) 369 mii->mii_media_active |= IFM_FDX; 370 mii->mii_media_active |= IFM_10_T; 371 } 372 373 int 374 tlphy_auto(sc, waitfor) 375 struct tlphy_softc *sc; 376 int waitfor; 377 { 378 int error; 379 380 switch ((error = mii_phy_auto(&sc->sc_mii, waitfor))) { 381 case EIO: 382 /* 383 * Just assume we're not in full-duplex mode. 384 * XXX Check link and try AUI/BNC? 385 */ 386 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0); 387 break; 388 389 case EJUSTRETURN: 390 /* Flag that we need to program when it completes. */ 391 sc->sc_need_acomp = 1; 392 break; 393 394 default: 395 tlphy_acomp(sc); 396 } 397 398 return (error); 399 } 400 401 void 402 tlphy_acomp(sc) 403 struct tlphy_softc *sc; 404 { 405 int aner, anlpar; 406 407 sc->sc_need_acomp = 0; 408 409 /* 410 * Grr, braindead ThunderLAN PHY doesn't self-configure 411 * after autonegotiation. We have to do it ourselves 412 * based on the link partner status. 413 */ 414 415 aner = PHY_READ(&sc->sc_mii, MII_ANER); 416 if (aner & ANER_LPAN) { 417 anlpar = PHY_READ(&sc->sc_mii, MII_ANLPAR) & 418 PHY_READ(&sc->sc_mii, MII_ANAR); 419 if (anlpar & ANAR_10_FD) { 420 PHY_WRITE(&sc->sc_mii, MII_BMCR, BMCR_FDX); 421 return; 422 } 423 } 424 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0); 425 } 426
Indexes created Tue Sep 23 13:09:54 GMT 2025