tlphy.c revision 1.16
1 /* $NetBSD: tlphy.c,v 1.16 1998/11/05 00:19:32 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_tlphycap; 101 }; 102 103 int tlphymatch __P((struct device *, struct cfdata *, void *)); 104 void tlphyattach __P((struct device *, struct device *, void *)); 105 106 struct cfattach tlphy_ca = { 107 sizeof(struct tlphy_softc), tlphymatch, tlphyattach 108 }; 109 110 int tlphy_service __P((struct mii_softc *, struct mii_data *, int)); 111 void tlphy_auto __P((struct tlphy_softc *)); 112 void tlphy_status __P((struct tlphy_softc *)); 113 114 int 115 tlphymatch(parent, match, aux) 116 struct device *parent; 117 struct cfdata *match; 118 void *aux; 119 { 120 struct mii_attach_args *ma = aux; 121 122 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_TI && 123 MII_MODEL(ma->mii_id2) == MII_MODEL_TI_TLAN10T) 124 return (10); 125 126 return (0); 127 } 128 129 void 130 tlphyattach(parent, self, aux) 131 struct device *parent, *self; 132 void *aux; 133 { 134 struct tlphy_softc *sc = (struct tlphy_softc *)self; 135 struct tl_softc *tlsc = (struct tl_softc *)self->dv_parent; 136 struct mii_attach_args *ma = aux; 137 struct mii_data *mii = ma->mii_data; 138 const char *sep = ""; 139 140 printf(": %s, rev. %d\n", MII_STR_TI_TLAN10T, 141 MII_REV(ma->mii_id2)); 142 143 sc->sc_mii.mii_inst = mii->mii_instance; 144 sc->sc_mii.mii_phy = ma->mii_phyno; 145 sc->sc_mii.mii_service = tlphy_service; 146 sc->sc_mii.mii_pdata = mii; 147 148 mii_phy_reset(&sc->sc_mii); 149 150 /* 151 * Note that if we're on a device that also supports 100baseTX, 152 * we are not going to want to use the built-in 10baseT port, 153 * since there will be another PHY on the MII wired up to the 154 * UTP connector. The parent indicates this to us by specifying 155 * the TLPHY_MEDIA_NO_10_T bit. 156 */ 157 sc->sc_tlphycap = tlsc->tl_product->tp_tlphymedia; 158 if ((sc->sc_tlphycap & TLPHY_MEDIA_NO_10_T) == 0) 159 sc->sc_mii.mii_capabilities = 160 PHY_READ(&sc->sc_mii, MII_BMSR) & ma->mii_capmask; 161 else 162 sc->sc_mii.mii_capabilities = 0; 163 164 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 165 166 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->sc_mii.mii_inst), 167 BMCR_ISO); 168 169 if ((sc->sc_tlphycap & TLPHY_MEDIA_NO_10_T) == 0) 170 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_LOOP, 171 sc->sc_mii.mii_inst), BMCR_LOOP); 172 173 #define PRINT(s) printf("%s%s", sep, s); sep = ", " 174 175 printf("%s: ", sc->sc_mii.mii_dev.dv_xname); 176 if (sc->sc_tlphycap) { 177 if (sc->sc_tlphycap & TLPHY_MEDIA_10_2) { 178 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_2, 0, 179 sc->sc_mii.mii_inst), 0); 180 PRINT("10base2/BNC"); 181 } else if (sc->sc_tlphycap & TLPHY_MEDIA_10_5) { 182 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_5, 0, 183 sc->sc_mii.mii_inst), 0); 184 PRINT("10base5/AUI"); 185 } 186 } 187 if (sc->sc_mii.mii_capabilities & BMSR_MEDIAMASK) { 188 printf(sep); 189 mii_add_media(mii, sc->sc_mii.mii_capabilities, 190 sc->sc_mii.mii_inst); 191 } else if ((sc->sc_tlphycap & (TLPHY_MEDIA_10_2 | TLPHY_MEDIA_10_5)) 192 == 0) 193 printf("no media present"); 194 printf("\n"); 195 #undef ADD 196 #undef PRINT 197 } 198 199 int 200 tlphy_service(self, mii, cmd) 201 struct mii_softc *self; 202 struct mii_data *mii; 203 int cmd; 204 { 205 struct tlphy_softc *sc = (struct tlphy_softc *)self; 206 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 207 int reg; 208 209 switch (cmd) { 210 case MII_POLLSTAT: 211 /* 212 * If we're not polling our PHY instance, just return. 213 */ 214 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) 215 return (0); 216 break; 217 218 case MII_MEDIACHG: 219 /* 220 * If the media indicates a different PHY instance, 221 * isolate ourselves. 222 */ 223 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) { 224 reg = PHY_READ(&sc->sc_mii, MII_BMCR); 225 PHY_WRITE(&sc->sc_mii, MII_BMCR, reg | BMCR_ISO); 226 return (0); 227 } 228 229 /* 230 * If the interface is not up, don't do anything. 231 */ 232 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 233 break; 234 235 switch (IFM_SUBTYPE(ife->ifm_media)) { 236 case IFM_AUTO: 237 /* 238 * The ThunderLAN PHY doesn't self-configure after 239 * an autonegotiation cycle, so there's no such 240 * thing as "already in auto mode". 241 */ 242 tlphy_auto(sc); 243 break; 244 case IFM_10_2: 245 case IFM_10_5: 246 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0); 247 PHY_WRITE(&sc->sc_mii, MII_TLPHY_CTRL, CTRL_AUISEL); 248 delay(100000); 249 break; 250 default: 251 PHY_WRITE(&sc->sc_mii, MII_TLPHY_CTRL, 0); 252 delay(100000); 253 PHY_WRITE(&sc->sc_mii, MII_ANAR, 254 mii_anar(ife->ifm_media)); 255 PHY_WRITE(&sc->sc_mii, MII_BMCR, ife->ifm_data); 256 } 257 break; 258 259 case MII_TICK: 260 /* 261 * If we're not currently selected, just return. 262 */ 263 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) 264 return (0); 265 266 /* 267 * Only used for autonegotiation. 268 */ 269 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 270 return (0); 271 272 /* 273 * Is the interface even up? 274 */ 275 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 276 return (0); 277 278 /* 279 * Check to see if we have link. If we do, we don't 280 * need to restart the autonegotiation process. Read 281 * the BMSR twice in case it's latched. 282 * 283 * XXX WHAT ABOUT CHECKING LINK ON THE BNC/AUI?! 284 */ 285 reg = PHY_READ(&sc->sc_mii, MII_BMSR) | 286 PHY_READ(&sc->sc_mii, MII_BMSR); 287 if (reg & BMSR_LINK) 288 return (0); 289 290 /* 291 * Only retry autonegotiation every 5 seconds. 292 */ 293 if (++sc->sc_mii.mii_ticks != 5) 294 return (0); 295 296 sc->sc_mii.mii_ticks = 0; 297 mii_phy_reset(&sc->sc_mii); 298 tlphy_auto(sc); 299 break; 300 } 301 302 /* Update the media status. */ 303 tlphy_status(sc); 304 305 /* Callback if something changed. */ 306 if (sc->sc_mii.mii_active != mii->mii_media_active || 307 cmd == MII_MEDIACHG) { 308 (*mii->mii_statchg)(sc->sc_mii.mii_dev.dv_parent); 309 sc->sc_mii.mii_active = mii->mii_media_active; 310 } 311 return (0); 312 } 313 314 void 315 tlphy_status(sc) 316 struct tlphy_softc *sc; 317 { 318 struct mii_data *mii = sc->sc_mii.mii_pdata; 319 struct tl_softc *tlsc = (struct tl_softc *)sc->sc_mii.mii_dev.dv_parent; 320 int bmsr, bmcr, tlctrl; 321 322 mii->mii_media_status = IFM_AVALID; 323 mii->mii_media_active = IFM_ETHER; 324 325 bmcr = PHY_READ(&sc->sc_mii, MII_BMCR); 326 if (bmcr & BMCR_ISO) { 327 mii->mii_media_active |= IFM_NONE; 328 mii->mii_media_status = 0; 329 return; 330 } 331 332 tlctrl = PHY_READ(&sc->sc_mii, MII_TLPHY_CTRL); 333 if (tlctrl & CTRL_AUISEL) { 334 if (sc->sc_tlphycap & TLPHY_MEDIA_10_2) 335 mii->mii_media_active |= IFM_10_2; 336 else if (sc->sc_tlphycap & TLPHY_MEDIA_10_5) 337 mii->mii_media_active |= IFM_10_5; 338 else 339 printf("%s: AUI selected with no matching media !\n", 340 sc->sc_mii.mii_dev.dv_xname); 341 if (tlsc->tl_flags & TL_IFACT) 342 mii->mii_media_status |= IFM_ACTIVE; 343 return; 344 } 345 346 bmsr = PHY_READ(&sc->sc_mii, MII_BMSR) | 347 PHY_READ(&sc->sc_mii, MII_BMSR); 348 if (bmsr & BMSR_LINK) 349 mii->mii_media_status |= IFM_ACTIVE; 350 351 if (bmcr & BMCR_LOOP) 352 mii->mii_media_active |= IFM_LOOP; 353 354 /* 355 * Grr, braindead ThunderLAN PHY doesn't have any way to 356 * tell which media is actually active. (Note it also 357 * doesn't self-configure after autonegotiation.) We 358 * just have to report what's in the BMCR. 359 */ 360 if (bmcr & BMCR_FDX) 361 mii->mii_media_active |= IFM_FDX; 362 mii->mii_media_active |= IFM_10_T; 363 } 364 365 void 366 tlphy_auto(sc) 367 struct tlphy_softc *sc; 368 { 369 int aner, anlpar; 370 371 if (mii_phy_auto(&sc->sc_mii) == 0) 372 goto dflt; 373 374 /* 375 * Grr, braindead ThunderLAN PHY doesn't self-configure 376 * after autonegotiation. We have to do it ourselves 377 * based on the link partner status. 378 */ 379 380 aner = PHY_READ(&sc->sc_mii, MII_ANER); 381 if (aner & ANER_LPAN) { 382 anlpar = PHY_READ(&sc->sc_mii, MII_ANLPAR) & 383 PHY_READ(&sc->sc_mii, MII_ANAR); 384 if (anlpar & ANAR_10_FD) { 385 PHY_WRITE(&sc->sc_mii, MII_BMCR, BMCR_FDX); 386 return; 387 } 388 } 389 390 dflt: 391 /* 392 * Just assume we're not in full-duplex mode. 393 * XXX Check link and try AUI/BNC? 394 */ 395 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0); 396 } 397
Indexes created Wed Sep 24 02:09:48 GMT 2025