1 /* $NetBSD: tlphy.c,v 1.18 1999/05/14 11:40:28 drochner 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 * $FreeBSD: src/sys/dev/mii/tlphy.c,v 1.2.2.2 2001/07/29 22:48:37 kris Exp $ 40 * $DragonFly: src/sys/dev/netif/mii_layer/tlphy.c,v 1.7 2005/10/24 16:55:40 dillon Exp $ 41 */ 42 43 /* 44 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 45 * 46 * Redistribution and use in source and binary forms, with or without 47 * modification, are permitted provided that the following conditions 48 * are met: 49 * 1. Redistributions of source code must retain the above copyright 50 * notice, this list of conditions and the following disclaimer. 51 * 2. Redistributions in binary form must reproduce the above copyright 52 * notice, this list of conditions and the following disclaimer in the 53 * documentation and/or other materials provided with the distribution. 54 * 3. All advertising materials mentioning features or use of this software 55 * must display the following acknowledgement: 56 * This product includes software developed by Manuel Bouyer. 57 * 4. The name of the author may not be used to endorse or promote products 58 * derived from this software without specific prior written permission. 59 * 60 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 61 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 62 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 63 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 64 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 65 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 66 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 67 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 68 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 69 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 70 */ 71 72 /* 73 * Driver for Texas Instruments's ThunderLAN PHYs 74 */ 75 76 #include <sys/param.h> 77 #include <sys/systm.h> 78 #include <sys/kernel.h> 79 #include <sys/socket.h> 80 #include <sys/errno.h> 81 #include <sys/module.h> 82 #include <sys/bus.h> 83 #include <sys/malloc.h> 84 85 #include <machine/bus.h> 86 #include <machine/clock.h> 87 88 #include <net/if.h> 89 #include <net/if_media.h> 90 91 #include "mii.h" 92 #include "miivar.h" 93 #include "miidevs.h" 94 95 #include "tlphyreg.h" 96 97 #include "miibus_if.h" 98 99 struct tlphy_softc { 100 struct mii_softc sc_mii; /* generic PHY */ 101 int sc_need_acomp; 102 }; 103 104 static int tlphy_probe (device_t); 105 static int tlphy_attach (device_t); 106 static int tlphy_detach (device_t); 107 108 static device_method_t tlphy_methods[] = { 109 /* device interface */ 110 DEVMETHOD(device_probe, tlphy_probe), 111 DEVMETHOD(device_attach, tlphy_attach), 112 DEVMETHOD(device_detach, tlphy_detach), 113 DEVMETHOD(device_shutdown, bus_generic_shutdown), 114 { 0, 0 } 115 }; 116 117 static devclass_t tlphy_devclass; 118 119 static driver_t tlphy_driver = { 120 "tlphy", 121 tlphy_methods, 122 sizeof(struct tlphy_softc) 123 }; 124 125 DRIVER_MODULE(tlphy, miibus, tlphy_driver, tlphy_devclass, 0, 0); 126 127 int tlphy_service (struct mii_softc *, struct mii_data *, int); 128 int tlphy_auto (struct tlphy_softc *, int); 129 void tlphy_acomp (struct tlphy_softc *); 130 void tlphy_status (struct tlphy_softc *); 131 132 static int tlphy_probe(dev) 133 device_t dev; 134 { 135 struct mii_attach_args *ma; 136 137 ma = device_get_ivars(dev); 138 139 if (MII_OUI(ma->mii_id1, ma->mii_id2) != MII_OUI_xxTI || 140 MII_MODEL(ma->mii_id2) != MII_MODEL_xxTI_TLAN10T) 141 return (ENXIO); 142 143 device_set_desc(dev, MII_STR_xxTI_TLAN10T); 144 145 return (0); 146 } 147 148 static int tlphy_attach(dev) 149 device_t dev; 150 { 151 struct tlphy_softc *sc; 152 struct mii_attach_args *ma; 153 struct mii_data *mii; 154 const char *sep = ""; 155 int capmask = 0xFFFFFFFF; 156 157 sc = device_get_softc(dev); 158 ma = device_get_ivars(dev); 159 mii_softc_init(&sc->sc_mii, ma); 160 sc->sc_mii.mii_dev = device_get_parent(dev); 161 mii = device_get_softc(sc->sc_mii.mii_dev); 162 LIST_INSERT_HEAD(&mii->mii_phys, &sc->sc_mii, mii_list); 163 164 sc->sc_mii.mii_inst = mii->mii_instance; 165 sc->sc_mii.mii_service = tlphy_service; 166 sc->sc_mii.mii_pdata = mii; 167 168 if (mii->mii_instance) { 169 struct mii_softc *other; 170 device_t *devlist; 171 int devs, i; 172 173 device_get_children(sc->sc_mii.mii_dev, &devlist, &devs); 174 for (i = 0; i < devs; i++) { 175 if (strcmp(device_get_name(devlist[i]), "tlphy")) { 176 other = device_get_softc(devlist[i]); 177 capmask &= ~other->mii_capabilities; 178 break; 179 } 180 } 181 free(devlist, M_TEMP); 182 } 183 184 mii->mii_instance++; 185 186 sc->sc_mii.mii_flags &= ~MIIF_NOISOLATE; 187 mii_phy_reset(&sc->sc_mii); 188 sc->sc_mii.mii_flags |= MIIF_NOISOLATE; 189 190 /* 191 * Note that if we're on a device that also supports 100baseTX, 192 * we are not going to want to use the built-in 10baseT port, 193 * since there will be another PHY on the MII wired up to the 194 * UTP connector. The parent indicates this to us by specifying 195 * the TLPHY_MEDIA_NO_10_T bit. 196 */ 197 sc->sc_mii.mii_capabilities = 198 PHY_READ(&sc->sc_mii, MII_BMSR) & capmask /*ma->mii_capmask*/; 199 200 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 201 202 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->sc_mii.mii_inst), 203 BMCR_ISO); 204 205 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_LOOP, 206 sc->sc_mii.mii_inst), BMCR_LOOP); 207 208 #define PRINT(s) printf("%s%s", sep, s); sep = ", " 209 210 device_printf(dev, " "); 211 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_2, 0, sc->sc_mii.mii_inst), 0); 212 PRINT("10base2/BNC"); 213 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_5, 0, sc->sc_mii.mii_inst), 0); 214 PRINT("10base5/AUI"); 215 216 if (sc->sc_mii.mii_capabilities & BMSR_MEDIAMASK) { 217 printf("%s", sep); 218 mii_add_media(&sc->sc_mii, sc->sc_mii.mii_capabilities); 219 } 220 221 printf("\n"); 222 #undef ADD 223 #undef PRINT 224 MIIBUS_MEDIAINIT(sc->sc_mii.mii_dev); 225 return(0); 226 } 227 228 static int tlphy_detach(dev) 229 device_t dev; 230 { 231 struct tlphy_softc *sc; 232 struct mii_data *mii; 233 234 sc = device_get_softc(dev); 235 mii = device_get_softc(device_get_parent(dev)); 236 sc->sc_mii.mii_dev = NULL; 237 LIST_REMOVE(&sc->sc_mii, mii_list); 238 239 return(0); 240 } 241 242 int 243 tlphy_service(self, mii, cmd) 244 struct mii_softc *self; 245 struct mii_data *mii; 246 int cmd; 247 { 248 struct tlphy_softc *sc = (struct tlphy_softc *)self; 249 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 250 int reg; 251 252 if ((sc->sc_mii.mii_flags & MIIF_DOINGAUTO) == 0 && sc->sc_need_acomp) 253 tlphy_acomp(sc); 254 255 switch (cmd) { 256 case MII_POLLSTAT: 257 /* 258 * If we're not polling our PHY instance, just return. 259 */ 260 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) 261 return (0); 262 break; 263 264 case MII_MEDIACHG: 265 /* 266 * If the media indicates a different PHY instance, 267 * isolate ourselves. 268 */ 269 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) { 270 reg = PHY_READ(&sc->sc_mii, MII_BMCR); 271 PHY_WRITE(&sc->sc_mii, MII_BMCR, reg | BMCR_ISO); 272 return (0); 273 } 274 275 /* 276 * If the interface is not up, don't do anything. 277 */ 278 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 279 break; 280 281 switch (IFM_SUBTYPE(ife->ifm_media)) { 282 case IFM_AUTO: 283 /* 284 * The ThunderLAN PHY doesn't self-configure after 285 * an autonegotiation cycle, so there's no such 286 * thing as "already in auto mode". 287 */ 288 (void) tlphy_auto(sc, 1); 289 break; 290 case IFM_10_2: 291 case IFM_10_5: 292 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0); 293 PHY_WRITE(&sc->sc_mii, MII_TLPHY_CTRL, CTRL_AUISEL); 294 DELAY(100000); 295 break; 296 default: 297 PHY_WRITE(&sc->sc_mii, MII_TLPHY_CTRL, 0); 298 DELAY(100000); 299 PHY_WRITE(&sc->sc_mii, MII_ANAR, 300 mii_anar(ife->ifm_media)); 301 PHY_WRITE(&sc->sc_mii, MII_BMCR, ife->ifm_data); 302 } 303 break; 304 305 case MII_TICK: 306 /* 307 * If we're not currently selected, just return. 308 */ 309 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) 310 return (0); 311 312 /* 313 * Only used for autonegotiation. 314 */ 315 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 316 return (0); 317 318 /* 319 * Is the interface even up? 320 */ 321 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 322 return (0); 323 324 /* 325 * Check to see if we have link. If we do, we don't 326 * need to restart the autonegotiation process. Read 327 * the BMSR twice in case it's latched. 328 * 329 * XXX WHAT ABOUT CHECKING LINK ON THE BNC/AUI?! 330 */ 331 reg = PHY_READ(&sc->sc_mii, MII_BMSR) | 332 PHY_READ(&sc->sc_mii, MII_BMSR); 333 if (reg & BMSR_LINK) 334 return (0); 335 336 /* 337 * Only retry autonegotiation every 5 seconds. 338 */ 339 if (++sc->sc_mii.mii_ticks != 5) 340 return (0); 341 342 sc->sc_mii.mii_ticks = 0; 343 mii_phy_reset(&sc->sc_mii); 344 if (tlphy_auto(sc, 0) == EJUSTRETURN) 345 return (0); 346 break; 347 } 348 349 /* Update the media status. */ 350 tlphy_status(sc); 351 352 /* Callback if something changed. */ 353 if (sc->sc_mii.mii_active != mii->mii_media_active || 354 cmd == MII_MEDIACHG) { 355 MIIBUS_STATCHG(sc->sc_mii.mii_dev); 356 sc->sc_mii.mii_active = mii->mii_media_active; 357 } 358 return (0); 359 } 360 361 void 362 tlphy_status(sc) 363 struct tlphy_softc *sc; 364 { 365 struct mii_data *mii = sc->sc_mii.mii_pdata; 366 int bmsr, bmcr, tlctrl; 367 368 mii->mii_media_status = IFM_AVALID; 369 mii->mii_media_active = IFM_ETHER; 370 371 bmcr = PHY_READ(&sc->sc_mii, MII_BMCR); 372 if (bmcr & BMCR_ISO) { 373 mii->mii_media_active |= IFM_NONE; 374 mii->mii_media_status = 0; 375 return; 376 } 377 378 tlctrl = PHY_READ(&sc->sc_mii, MII_TLPHY_CTRL); 379 if (tlctrl & CTRL_AUISEL) { 380 mii->mii_media_status = 0; 381 mii->mii_media_active = mii->mii_media.ifm_cur->ifm_media; 382 return; 383 } 384 385 bmsr = PHY_READ(&sc->sc_mii, MII_BMSR) | 386 PHY_READ(&sc->sc_mii, MII_BMSR); 387 if (bmsr & BMSR_LINK) 388 mii->mii_media_status |= IFM_ACTIVE; 389 390 if (bmcr & BMCR_LOOP) 391 mii->mii_media_active |= IFM_LOOP; 392 393 /* 394 * Grr, braindead ThunderLAN PHY doesn't have any way to 395 * tell which media is actually active. (Note it also 396 * doesn't self-configure after autonegotiation.) We 397 * just have to report what's in the BMCR. 398 */ 399 if (bmcr & BMCR_FDX) 400 mii->mii_media_active |= IFM_FDX; 401 mii->mii_media_active |= IFM_10_T; 402 } 403 404 int 405 tlphy_auto(sc, waitfor) 406 struct tlphy_softc *sc; 407 int waitfor; 408 { 409 int error; 410 411 switch ((error = mii_phy_auto(&sc->sc_mii, waitfor))) { 412 case EIO: 413 /* 414 * Just assume we're not in full-duplex mode. 415 * XXX Check link and try AUI/BNC? 416 */ 417 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0); 418 break; 419 420 case EJUSTRETURN: 421 /* Flag that we need to program when it completes. */ 422 sc->sc_need_acomp = 1; 423 break; 424 425 default: 426 tlphy_acomp(sc); 427 } 428 429 return (error); 430 } 431 432 void 433 tlphy_acomp(sc) 434 struct tlphy_softc *sc; 435 { 436 int aner, anlpar; 437 438 sc->sc_need_acomp = 0; 439 440 /* 441 * Grr, braindead ThunderLAN PHY doesn't self-configure 442 * after autonegotiation. We have to do it ourselves 443 * based on the link partner status. 444 */ 445 446 aner = PHY_READ(&sc->sc_mii, MII_ANER); 447 if (aner & ANER_LPAN) { 448 anlpar = PHY_READ(&sc->sc_mii, MII_ANLPAR) & 449 PHY_READ(&sc->sc_mii, MII_ANAR); 450 if (anlpar & ANAR_10_FD) { 451 PHY_WRITE(&sc->sc_mii, MII_BMCR, BMCR_FDX); 452 return; 453 } 454 } 455 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0); 456 } 457