tlphy.c revision 1.15
1 /* $NetBSD: tlphy.c,v 1.15 1998/11/04 23:44:09 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_auto __P((struct tlphy_softc *)); 114 void tlphy_status __P((struct tlphy_softc *)); 115 116 int 117 tlphymatch(parent, match, aux) 118 struct device *parent; 119 struct cfdata *match; 120 void *aux; 121 { 122 struct mii_attach_args *ma = aux; 123 124 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_TI && 125 MII_MODEL(ma->mii_id2) == MII_MODEL_TI_TLAN10T) 126 return (10); 127 128 return (0); 129 } 130 131 void 132 tlphyattach(parent, self, aux) 133 struct device *parent, *self; 134 void *aux; 135 { 136 struct tlphy_softc *sc = (struct tlphy_softc *)self; 137 struct tl_softc *tlsc = (struct tl_softc *)self->dv_parent; 138 struct mii_attach_args *ma = aux; 139 struct mii_data *mii = ma->mii_data; 140 const char *sep = ""; 141 142 printf(": %s, rev. %d\n", MII_STR_TI_TLAN10T, 143 MII_REV(ma->mii_id2)); 144 145 sc->sc_mii.mii_inst = mii->mii_instance; 146 sc->sc_mii.mii_phy = ma->mii_phyno; 147 sc->sc_mii.mii_service = tlphy_service; 148 sc->sc_mii.mii_pdata = mii; 149 150 mii_phy_reset(&sc->sc_mii); 151 152 /* 153 * Note that if we're on a device that also supports 100baseTX, 154 * we are not going to want to use the built-in 10baseT port, 155 * since there will be another PHY on the MII wired up to the 156 * UTP connector. The parent indicates this to us by specifying 157 * the TLPHY_MEDIA_NO_10_T bit. 158 */ 159 sc->sc_tlphycap = tlsc->tl_product->tp_tlphymedia; 160 if ((sc->sc_tlphycap & TLPHY_MEDIA_NO_10_T) == 0) 161 sc->sc_mii.mii_capabilities = 162 PHY_READ(&sc->sc_mii, MII_BMSR) & ma->mii_capmask; 163 else 164 sc->sc_mii.mii_capabilities = 0; 165 166 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 167 168 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->sc_mii.mii_inst), 169 BMCR_ISO); 170 171 if ((sc->sc_tlphycap & TLPHY_MEDIA_NO_10_T) == 0) 172 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_LOOP, 173 sc->sc_mii.mii_inst), BMCR_LOOP); 174 175 #define PRINT(s) printf("%s%s", sep, s); sep = ", " 176 177 printf("%s: ", sc->sc_mii.mii_dev.dv_xname); 178 if (sc->sc_tlphycap) { 179 if (sc->sc_tlphycap & TLPHY_MEDIA_10_2) { 180 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_2, 0, 181 sc->sc_mii.mii_inst), 0); 182 PRINT("10base2/BNC"); 183 } else if (sc->sc_tlphycap & TLPHY_MEDIA_10_5) { 184 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_5, 0, 185 sc->sc_mii.mii_inst), 0); 186 PRINT("10base5/AUI"); 187 } 188 } 189 if (sc->sc_mii.mii_capabilities & BMSR_MEDIAMASK) { 190 printf(sep); 191 mii_add_media(mii, sc->sc_mii.mii_capabilities, 192 sc->sc_mii.mii_inst); 193 } else if ((sc->sc_tlphycap & (TLPHY_MEDIA_10_2 | TLPHY_MEDIA_10_5)) 194 == 0) 195 printf("no media present"); 196 printf("\n"); 197 #undef ADD 198 #undef PRINT 199 } 200 201 int 202 tlphy_service(self, mii, cmd) 203 struct mii_softc *self; 204 struct mii_data *mii; 205 int cmd; 206 { 207 struct tlphy_softc *sc = (struct tlphy_softc *)self; 208 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 209 int reg; 210 211 switch (cmd) { 212 case MII_POLLSTAT: 213 /* 214 * If we're not polling our PHY instance, just return. 215 */ 216 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) 217 return (0); 218 break; 219 220 case MII_MEDIACHG: 221 /* 222 * If the media indicates a different PHY instance, 223 * isolate ourselves. 224 */ 225 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) { 226 reg = PHY_READ(&sc->sc_mii, MII_BMCR); 227 PHY_WRITE(&sc->sc_mii, MII_BMCR, reg | BMCR_ISO); 228 return (0); 229 } 230 231 /* 232 * If the interface is not up, don't do anything. 233 */ 234 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 235 break; 236 237 switch (IFM_SUBTYPE(ife->ifm_media)) { 238 case IFM_AUTO: 239 /* 240 * The ThunderLAN PHY doesn't self-configure after 241 * an autonegotiation cycle, so there's no such 242 * thing as "already in auto mode". 243 */ 244 tlphy_auto(sc); 245 break; 246 case IFM_10_2: 247 case IFM_10_5: 248 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0); 249 PHY_WRITE(&sc->sc_mii, MII_TLPHY_CTRL, CTRL_AUISEL); 250 delay(100000); 251 break; 252 default: 253 PHY_WRITE(&sc->sc_mii, MII_TLPHY_CTRL, 0); 254 delay(100000); 255 PHY_WRITE(&sc->sc_mii, MII_ANAR, 256 mii_anar(ife->ifm_media)); 257 PHY_WRITE(&sc->sc_mii, MII_BMCR, ife->ifm_data); 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_ticks != 5) 296 return (0); 297 298 sc->sc_ticks = 0; 299 mii_phy_reset(&sc->sc_mii); 300 tlphy_auto(sc); 301 break; 302 } 303 304 /* Update the media status. */ 305 tlphy_status(sc); 306 307 /* Callback if something changed. */ 308 if (sc->sc_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 309 (*mii->mii_statchg)(sc->sc_mii.mii_dev.dv_parent); 310 sc->sc_active = mii->mii_media_active; 311 } 312 return (0); 313 } 314 315 void 316 tlphy_status(sc) 317 struct tlphy_softc *sc; 318 { 319 struct mii_data *mii = sc->sc_mii.mii_pdata; 320 struct tl_softc *tlsc = (struct tl_softc *)sc->sc_mii.mii_dev.dv_parent; 321 int bmsr, bmcr, tlctrl; 322 323 mii->mii_media_status = IFM_AVALID; 324 mii->mii_media_active = IFM_ETHER; 325 326 bmcr = PHY_READ(&sc->sc_mii, MII_BMCR); 327 if (bmcr & BMCR_ISO) { 328 mii->mii_media_active |= IFM_NONE; 329 mii->mii_media_status = 0; 330 return; 331 } 332 333 tlctrl = PHY_READ(&sc->sc_mii, MII_TLPHY_CTRL); 334 if (tlctrl & CTRL_AUISEL) { 335 if (sc->sc_tlphycap & TLPHY_MEDIA_10_2) 336 mii->mii_media_active |= IFM_10_2; 337 else if (sc->sc_tlphycap & TLPHY_MEDIA_10_5) 338 mii->mii_media_active |= IFM_10_5; 339 else 340 printf("%s: AUI selected with no matching media !\n", 341 sc->sc_mii.mii_dev.dv_xname); 342 if (tlsc->tl_flags & TL_IFACT) 343 mii->mii_media_status |= IFM_ACTIVE; 344 return; 345 } 346 347 bmsr = PHY_READ(&sc->sc_mii, MII_BMSR) | 348 PHY_READ(&sc->sc_mii, MII_BMSR); 349 if (bmsr & BMSR_LINK) 350 mii->mii_media_status |= IFM_ACTIVE; 351 352 if (bmcr & BMCR_LOOP) 353 mii->mii_media_active |= IFM_LOOP; 354 355 /* 356 * Grr, braindead ThunderLAN PHY doesn't have any way to 357 * tell which media is actually active. (Note it also 358 * doesn't self-configure after autonegotiation.) We 359 * just have to report what's in the BMCR. 360 */ 361 if (bmcr & BMCR_FDX) 362 mii->mii_media_active |= IFM_FDX; 363 mii->mii_media_active |= IFM_10_T; 364 } 365 366 void 367 tlphy_auto(sc) 368 struct tlphy_softc *sc; 369 { 370 int aner, anlpar; 371 372 if (mii_phy_auto(&sc->sc_mii) == 0) 373 goto dflt; 374 375 /* 376 * Grr, braindead ThunderLAN PHY doesn't self-configure 377 * after autonegotiation. We have to do it ourselves 378 * based on the link partner status. 379 */ 380 381 aner = PHY_READ(&sc->sc_mii, MII_ANER); 382 if (aner & ANER_LPAN) { 383 anlpar = PHY_READ(&sc->sc_mii, MII_ANLPAR) & 384 PHY_READ(&sc->sc_mii, MII_ANAR); 385 if (anlpar & ANAR_10_FD) { 386 PHY_WRITE(&sc->sc_mii, MII_BMCR, BMCR_FDX); 387 return; 388 } 389 } 390 391 dflt: 392 /* 393 * Just assume we're not in full-duplex mode. 394 * XXX Check link and try AUI/BNC? 395 */ 396 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0); 397 } 398
Indexes created Wed Sep 24 14:09:57 GMT 2025