tlphy.c revision 95722
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 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/socket.h> 77#include <sys/errno.h> 78#include <sys/module.h> 79#include <sys/bus.h> 80#include <sys/malloc.h> 81 82#include <machine/bus.h> 83 84#include <net/if.h> 85#include <net/if_media.h> 86 87#include <dev/mii/mii.h> 88#include <dev/mii/miivar.h> 89#include <dev/mii/miidevs.h> 90 91#include <dev/mii/tlphyreg.h> 92 93#include "miibus_if.h" 94 95#if !defined(lint) 96static const char rcsid[] = 97 "$FreeBSD: head/sys/dev/mii/tlphy.c 95722 2002-04-29 13:07:38Z phk $"; 98#endif 99 100struct tlphy_softc { 101 struct mii_softc sc_mii; /* generic PHY */ 102 int sc_need_acomp; 103}; 104 105static int tlphy_probe (device_t); 106static int tlphy_attach (device_t); 107 108static device_method_t tlphy_methods[] = { 109 /* device interface */ 110 DEVMETHOD(device_probe, tlphy_probe), 111 DEVMETHOD(device_attach, tlphy_attach), 112 DEVMETHOD(device_detach, mii_phy_detach), 113 DEVMETHOD(device_shutdown, bus_generic_shutdown), 114 { 0, 0 } 115}; 116 117static devclass_t tlphy_devclass; 118 119static driver_t tlphy_driver = { 120 "tlphy", 121 tlphy_methods, 122 sizeof(struct tlphy_softc) 123}; 124 125DRIVER_MODULE(tlphy, miibus, tlphy_driver, tlphy_devclass, 0, 0); 126 127static int tlphy_service(struct mii_softc *, struct mii_data *, int); 128static int tlphy_auto(struct tlphy_softc *, int); 129static void tlphy_acomp(struct tlphy_softc *); 130static void tlphy_status(struct tlphy_softc *); 131 132static 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 148static 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 sc->sc_mii.mii_dev = device_get_parent(dev); 160 mii = device_get_softc(sc->sc_mii.mii_dev); 161 LIST_INSERT_HEAD(&mii->mii_phys, &sc->sc_mii, mii_list); 162 163 sc->sc_mii.mii_inst = mii->mii_instance; 164 sc->sc_mii.mii_phy = ma->mii_phyno; 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); 219 } 220 221 printf("\n"); 222#undef ADD 223#undef PRINT 224 MIIBUS_MEDIAINIT(sc->sc_mii.mii_dev); 225 return(0); 226} 227 228static int 229tlphy_service(self, mii, cmd) 230 struct mii_softc *self; 231 struct mii_data *mii; 232 int cmd; 233{ 234 struct tlphy_softc *sc = (struct tlphy_softc *)self; 235 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 236 int reg; 237 238 if ((sc->sc_mii.mii_flags & MIIF_DOINGAUTO) == 0 && sc->sc_need_acomp) 239 tlphy_acomp(sc); 240 241 switch (cmd) { 242 case MII_POLLSTAT: 243 /* 244 * If we're not polling our PHY instance, just return. 245 */ 246 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) 247 return (0); 248 break; 249 250 case MII_MEDIACHG: 251 /* 252 * If the media indicates a different PHY instance, 253 * isolate ourselves. 254 */ 255 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) { 256 reg = PHY_READ(&sc->sc_mii, MII_BMCR); 257 PHY_WRITE(&sc->sc_mii, MII_BMCR, reg | BMCR_ISO); 258 return (0); 259 } 260 261 /* 262 * If the interface is not up, don't do anything. 263 */ 264 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 265 break; 266 267 switch (IFM_SUBTYPE(ife->ifm_media)) { 268 case IFM_AUTO: 269 /* 270 * The ThunderLAN PHY doesn't self-configure after 271 * an autonegotiation cycle, so there's no such 272 * thing as "already in auto mode". 273 */ 274 (void) tlphy_auto(sc, 1); 275 break; 276 case IFM_10_2: 277 case IFM_10_5: 278 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0); 279 PHY_WRITE(&sc->sc_mii, MII_TLPHY_CTRL, CTRL_AUISEL); 280 DELAY(100000); 281 break; 282 default: 283 PHY_WRITE(&sc->sc_mii, MII_TLPHY_CTRL, 0); 284 DELAY(100000); 285 PHY_WRITE(&sc->sc_mii, MII_ANAR, 286 mii_anar(ife->ifm_media)); 287 PHY_WRITE(&sc->sc_mii, MII_BMCR, ife->ifm_data); 288 } 289 break; 290 291 case MII_TICK: 292 /* 293 * If we're not currently selected, just return. 294 */ 295 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) 296 return (0); 297 298 /* 299 * Is the interface even up? 300 */ 301 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 302 return (0); 303 304 /* 305 * Only used for autonegotiation. 306 */ 307 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 308 break; 309 310 /* 311 * Check to see if we have link. If we do, we don't 312 * need to restart the autonegotiation process. Read 313 * the BMSR twice in case it's latched. 314 * 315 * XXX WHAT ABOUT CHECKING LINK ON THE BNC/AUI?! 316 */ 317 reg = PHY_READ(&sc->sc_mii, MII_BMSR) | 318 PHY_READ(&sc->sc_mii, MII_BMSR); 319 if (reg & BMSR_LINK) 320 break; 321 322 /* 323 * Only retry autonegotiation every 5 seconds. 324 */ 325 if (++sc->sc_mii.mii_ticks != 5) 326 return (0); 327 328 sc->sc_mii.mii_ticks = 0; 329 mii_phy_reset(&sc->sc_mii); 330 if (tlphy_auto(sc, 0) == EJUSTRETURN) 331 return (0); 332 break; 333 } 334 335 /* Update the media status. */ 336 tlphy_status(sc); 337 338 /* Callback if something changed. */ 339 mii_phy_update(&sc->sc_mii, cmd); 340 return (0); 341} 342 343static void 344tlphy_status(sc) 345 struct tlphy_softc *sc; 346{ 347 struct mii_data *mii = sc->sc_mii.mii_pdata; 348 int bmsr, bmcr, tlctrl; 349 350 mii->mii_media_status = IFM_AVALID; 351 mii->mii_media_active = IFM_ETHER; 352 353 bmcr = PHY_READ(&sc->sc_mii, MII_BMCR); 354 if (bmcr & BMCR_ISO) { 355 mii->mii_media_active |= IFM_NONE; 356 mii->mii_media_status = 0; 357 return; 358 } 359 360 tlctrl = PHY_READ(&sc->sc_mii, MII_TLPHY_CTRL); 361 if (tlctrl & CTRL_AUISEL) { 362 mii->mii_media_status = 0; 363 mii->mii_media_active = mii->mii_media.ifm_cur->ifm_media; 364 return; 365 } 366 367 bmsr = PHY_READ(&sc->sc_mii, MII_BMSR) | 368 PHY_READ(&sc->sc_mii, MII_BMSR); 369 if (bmsr & BMSR_LINK) 370 mii->mii_media_status |= IFM_ACTIVE; 371 372 if (bmcr & BMCR_LOOP) 373 mii->mii_media_active |= IFM_LOOP; 374 375 /* 376 * Grr, braindead ThunderLAN PHY doesn't have any way to 377 * tell which media is actually active. (Note it also 378 * doesn't self-configure after autonegotiation.) We 379 * just have to report what's in the BMCR. 380 */ 381 if (bmcr & BMCR_FDX) 382 mii->mii_media_active |= IFM_FDX; 383 mii->mii_media_active |= IFM_10_T; 384} 385 386static int 387tlphy_auto(sc, waitfor) 388 struct tlphy_softc *sc; 389 int waitfor; 390{ 391 int error; 392 393 switch ((error = mii_phy_auto(&sc->sc_mii, waitfor))) { 394 case EIO: 395 /* 396 * Just assume we're not in full-duplex mode. 397 * XXX Check link and try AUI/BNC? 398 */ 399 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0); 400 break; 401 402 case EJUSTRETURN: 403 /* Flag that we need to program when it completes. */ 404 sc->sc_need_acomp = 1; 405 break; 406 407 default: 408 tlphy_acomp(sc); 409 } 410 411 return (error); 412} 413 414static void 415tlphy_acomp(sc) 416 struct tlphy_softc *sc; 417{ 418 int aner, anlpar; 419 420 sc->sc_need_acomp = 0; 421 422 /* 423 * Grr, braindead ThunderLAN PHY doesn't self-configure 424 * after autonegotiation. We have to do it ourselves 425 * based on the link partner status. 426 */ 427 428 aner = PHY_READ(&sc->sc_mii, MII_ANER); 429 if (aner & ANER_LPAN) { 430 anlpar = PHY_READ(&sc->sc_mii, MII_ANLPAR) & 431 PHY_READ(&sc->sc_mii, MII_ANAR); 432 if (anlpar & ANAR_10_FD) { 433 PHY_WRITE(&sc->sc_mii, MII_BMCR, BMCR_FDX); 434 return; 435 } 436 } 437 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0); 438} 439