tlphy.c revision 1.13
1 /* $NetBSD: tlphy.c,v 1.13 1998/11/04 23:07:15 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 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 79 #include <machine/bus.h> 80 81 #include <net/if.h> 82 #include <net/if_media.h> 83 84 #include <net/if_ether.h> 85 86 #include <dev/mii/mii.h> 87 #include <dev/mii/miivar.h> 88 #include <dev/mii/miidevs.h> 89 90 #include <dev/i2c/i2c_bus.h> 91 92 #include <dev/mii/tlphyreg.h> 93 #include <dev/mii/tlphyvar.h> 94 95 /* ThunderLAN PHY can only be on a ThunderLAN */ 96 #include <dev/pci/if_tlvar.h> 97 98 struct tlphy_softc { 99 struct mii_softc sc_mii; /* generic PHY */ 100 int sc_ticks; 101 int sc_tlphycap; 102 int sc_active; 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 void tlphy_reset __P((struct tlphy_softc *)); 114 void tlphy_auto __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_TI && 126 MII_MODEL(ma->mii_id2) == MII_MODEL_TI_TLAN10T) 127 return (1); 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_TI_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 tlphy_reset(sc); 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 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 168 169 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->sc_mii.mii_inst), 170 BMCR_ISO); 171 172 if ((sc->sc_tlphycap & TLPHY_MEDIA_NO_10_T) == 0) 173 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_LOOP, 174 sc->sc_mii.mii_inst), BMCR_LOOP); 175 176 #define PRINT(s) printf("%s%s", sep, s); sep = ", " 177 178 printf("%s: ", sc->sc_mii.mii_dev.dv_xname); 179 if (sc->sc_tlphycap) { 180 if (sc->sc_tlphycap & TLPHY_MEDIA_10_2) { 181 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_2, 0, 182 sc->sc_mii.mii_inst), 0); 183 PRINT("10base2/BNC"); 184 } else if (sc->sc_tlphycap & TLPHY_MEDIA_10_5) { 185 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_5, 0, 186 sc->sc_mii.mii_inst), 0); 187 PRINT("10base5/AUI"); 188 } 189 } 190 if (sc->sc_mii.mii_capabilities & BMSR_MEDIAMASK) { 191 printf(sep); 192 mii_add_media(mii, sc->sc_mii.mii_capabilities, 193 sc->sc_mii.mii_inst); 194 } else if ((sc->sc_tlphycap & (TLPHY_MEDIA_10_2 | TLPHY_MEDIA_10_5)) 195 == 0) 196 printf("no media present"); 197 printf("\n"); 198 #undef ADD 199 #undef PRINT 200 } 201 202 int 203 tlphy_service(self, mii, cmd) 204 struct mii_softc *self; 205 struct mii_data *mii; 206 int cmd; 207 { 208 struct tlphy_softc *sc = (struct tlphy_softc *)self; 209 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 210 int reg; 211 212 switch (cmd) { 213 case MII_POLLSTAT: 214 /* 215 * If we're not polling our PHY instance, just return. 216 */ 217 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) 218 return (0); 219 break; 220 221 case MII_MEDIACHG: 222 /* 223 * If the media indicates a different PHY instance, 224 * isolate ourselves. 225 */ 226 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) { 227 reg = PHY_READ(&sc->sc_mii, MII_BMCR); 228 PHY_WRITE(&sc->sc_mii, MII_BMCR, reg | BMCR_ISO); 229 return (0); 230 } 231 232 /* 233 * If the interface is not up, don't do anything. 234 */ 235 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 236 break; 237 238 switch (IFM_SUBTYPE(ife->ifm_media)) { 239 case IFM_AUTO: 240 /* 241 * The ThunderLAN PHY doesn't self-configure after 242 * an autonegotiation cycle, so there's no such 243 * thing as "already in auto mode". 244 */ 245 tlphy_auto(sc); 246 break; 247 case IFM_10_2: 248 case IFM_10_5: 249 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0); 250 PHY_WRITE(&sc->sc_mii, MII_TLPHY_CTRL, CTRL_AUISEL); 251 delay(100000); 252 break; 253 default: 254 PHY_WRITE(&sc->sc_mii, MII_TLPHY_CTRL, 0); 255 delay(100000); 256 PHY_WRITE(&sc->sc_mii, MII_ANAR, 257 mii_anar(ife->ifm_media)); 258 PHY_WRITE(&sc->sc_mii, MII_BMCR, ife->ifm_data); 259 } 260 break; 261 262 case MII_TICK: 263 /* 264 * If we're not currently selected, just return. 265 */ 266 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) 267 return (0); 268 269 /* 270 * Only used for autonegotiation. 271 */ 272 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 273 return (0); 274 275 /* 276 * Is the interface even up? 277 */ 278 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 279 return (0); 280 281 /* 282 * Check to see if we have link. If we do, we don't 283 * need to restart the autonegotiation process. Read 284 * the BMSR twice in case it's latched. 285 * 286 * XXX WHAT ABOUT CHECKING LINK ON THE BNC/AUI?! 287 */ 288 reg = PHY_READ(&sc->sc_mii, MII_BMSR) | 289 PHY_READ(&sc->sc_mii, MII_BMSR); 290 if (reg & BMSR_LINK) 291 return (0); 292 293 /* 294 * Only retry autonegotiation every 5 seconds. 295 */ 296 if (++sc->sc_ticks != 5) 297 return (0); 298 299 sc->sc_ticks = 0; 300 tlphy_reset(sc); 301 tlphy_auto(sc); 302 break; 303 } 304 305 /* Update the media status. */ 306 tlphy_status(sc); 307 308 /* Callback if something changed. */ 309 if (sc->sc_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 310 (*mii->mii_statchg)(sc->sc_mii.mii_dev.dv_parent); 311 sc->sc_active = mii->mii_media_active; 312 } 313 return (0); 314 } 315 316 void 317 tlphy_status(sc) 318 struct tlphy_softc *sc; 319 { 320 struct mii_data *mii = sc->sc_mii.mii_pdata; 321 struct tl_softc *tlsc = (struct tl_softc *)sc->sc_mii.mii_dev.dv_parent; 322 int bmsr, bmcr, tlctrl; 323 324 mii->mii_media_status = IFM_AVALID; 325 mii->mii_media_active = IFM_ETHER; 326 327 bmcr = PHY_READ(&sc->sc_mii, MII_BMCR); 328 if (bmcr & BMCR_ISO) { 329 mii->mii_media_active |= IFM_NONE; 330 mii->mii_media_status = 0; 331 return; 332 } 333 334 tlctrl = PHY_READ(&sc->sc_mii, MII_TLPHY_CTRL); 335 if (tlctrl & CTRL_AUISEL) { 336 if (sc->sc_tlphycap & TLPHY_MEDIA_10_2) 337 mii->mii_media_active |= IFM_10_2; 338 else if (sc->sc_tlphycap & TLPHY_MEDIA_10_5) 339 mii->mii_media_active |= IFM_10_5; 340 else 341 printf("%s: AUI selected with no matching media !\n", 342 sc->sc_mii.mii_dev.dv_xname); 343 if (tlsc->tl_flags & TL_IFACT) 344 mii->mii_media_status |= IFM_ACTIVE; 345 return; 346 } 347 348 bmsr = PHY_READ(&sc->sc_mii, MII_BMSR) | 349 PHY_READ(&sc->sc_mii, MII_BMSR); 350 if (bmsr & BMSR_LINK) 351 mii->mii_media_status |= IFM_ACTIVE; 352 353 if (bmcr & BMCR_LOOP) 354 mii->mii_media_active |= IFM_LOOP; 355 356 /* 357 * Grr, braindead ThunderLAN PHY doesn't have any way to 358 * tell which media is actually active. (Note it also 359 * doesn't self-configure after autonegotiation.) We 360 * just have to report what's in the BMCR. 361 */ 362 if (bmcr & BMCR_FDX) 363 mii->mii_media_active |= IFM_FDX; 364 mii->mii_media_active |= IFM_10_T; 365 } 366 367 void 368 tlphy_auto(sc) 369 struct tlphy_softc *sc; 370 { 371 int aner, anlpar; 372 373 if (mii_phy_auto(&sc->sc_mii) == 0) 374 goto dflt; 375 376 /* 377 * Grr, braindead ThunderLAN PHY doesn't self-configure 378 * after autonegotiation. We have to do it ourselves 379 * based on the link partner status. 380 */ 381 382 aner = PHY_READ(&sc->sc_mii, MII_ANER); 383 if (aner & ANER_LPAN) { 384 anlpar = PHY_READ(&sc->sc_mii, MII_ANLPAR) & 385 PHY_READ(&sc->sc_mii, MII_ANAR); 386 if (anlpar & ANAR_10_FD) { 387 PHY_WRITE(&sc->sc_mii, MII_BMCR, BMCR_FDX); 388 return; 389 } 390 } 391 392 dflt: 393 /* 394 * Just assume we're not in full-duplex mode. 395 * XXX Check link and try AUI/BNC? 396 */ 397 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0); 398 } 399 400 void 401 tlphy_reset(sc) 402 struct tlphy_softc *sc; 403 { 404 int reg, i; 405 406 PHY_WRITE(&sc->sc_mii, MII_BMCR, BMCR_RESET|BMCR_ISO); 407 408 /* Wait 100ms for it to complete. */ 409 for (i = 0; i < 100; i++) { 410 reg = PHY_READ(&sc->sc_mii, MII_BMCR); 411 if ((reg & BMCR_RESET) == 0) 412 break; 413 delay(1000); 414 } 415 416 /* Make sure the PHY is isolated. */ 417 if (sc->sc_mii.mii_inst != 0) 418 PHY_WRITE(&sc->sc_mii, MII_BMCR, reg | BMCR_ISO); 419 } 420
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