1 /* $NetBSD: tlphy.c,v 1.34 2002/03/25 20:51:26 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999, 2000 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/cdefs.h> 74 __KERNEL_RCSID(0, "$NetBSD: tlphy.c,v 1.34 2002/03/25 20:51:26 thorpej Exp $"); 75 76 #include <sys/param.h> 77 #include <sys/systm.h> 78 #include <sys/kernel.h> 79 #include <sys/device.h> 80 #include <sys/socket.h> 81 #include <sys/errno.h> 82 83 #include <machine/bus.h> 84 85 #include <net/if.h> 86 #include <net/if_media.h> 87 88 #include <net/if_ether.h> 89 90 #include <dev/mii/mii.h> 91 #include <dev/mii/miivar.h> 92 #include <dev/mii/miidevs.h> 93 94 #include <dev/i2c/i2c_bus.h> 95 96 #include <dev/mii/tlphyreg.h> 97 #include <dev/mii/tlphyvar.h> 98 99 /* ThunderLAN PHY can only be on a ThunderLAN */ 100 #include <dev/pci/if_tlvar.h> 101 102 struct tlphy_softc { 103 struct mii_softc sc_mii; /* generic PHY */ 104 int sc_tlphycap; 105 int sc_need_acomp; 106 }; 107 108 int tlphymatch(struct device *, struct cfdata *, void *); 109 void tlphyattach(struct device *, struct device *, void *); 110 111 struct cfattach tlphy_ca = { 112 sizeof(struct tlphy_softc), tlphymatch, tlphyattach, mii_phy_detach, 113 mii_phy_activate 114 }; 115 116 int tlphy_service(struct mii_softc *, struct mii_data *, int); 117 int tlphy_auto(struct tlphy_softc *, int); 118 void tlphy_acomp(struct tlphy_softc *); 119 void tlphy_status(struct mii_softc *); 120 121 const struct mii_phy_funcs tlphy_funcs = { 122 tlphy_service, tlphy_status, mii_phy_reset, 123 }; 124 125 const struct mii_phydesc tlphys[] = { 126 { MII_OUI_TI, MII_MODEL_TI_TLAN10T, 127 MII_STR_TI_TLAN10T }, 128 129 { 0, 0, 130 NULL }, 131 }; 132 133 int 134 tlphymatch(struct device *parent, struct cfdata *match, void *aux) 135 { 136 struct mii_attach_args *ma = aux; 137 138 if (mii_phy_match(ma, tlphys) != NULL) 139 return (10); 140 141 return (0); 142 } 143 144 void 145 tlphyattach(struct device *parent, struct device *self, void *aux) 146 { 147 struct tlphy_softc *sc = (struct tlphy_softc *)self; 148 struct tl_softc *tlsc = (struct tl_softc *)self->dv_parent; 149 struct mii_attach_args *ma = aux; 150 struct mii_data *mii = ma->mii_data; 151 const struct mii_phydesc *mpd; 152 const char *sep = ""; 153 154 mpd = mii_phy_match(ma, tlphys); 155 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 156 157 sc->sc_mii.mii_inst = mii->mii_instance; 158 sc->sc_mii.mii_phy = ma->mii_phyno; 159 sc->sc_mii.mii_funcs = &tlphy_funcs; 160 sc->sc_mii.mii_pdata = mii; 161 sc->sc_mii.mii_flags = ma->mii_flags; 162 sc->sc_mii.mii_anegticks = 5; 163 164 PHY_RESET(&sc->sc_mii); 165 166 /* 167 * Note that if we're on a device that also supports 100baseTX, 168 * we are not going to want to use the built-in 10baseT port, 169 * since there will be another PHY on the MII wired up to the 170 * UTP connector. The parent indicates this to us by specifying 171 * the TLPHY_MEDIA_NO_10_T bit. 172 */ 173 sc->sc_tlphycap = tlsc->tl_product->tp_tlphymedia; 174 if ((sc->sc_tlphycap & TLPHY_MEDIA_NO_10_T) == 0) 175 sc->sc_mii.mii_capabilities = 176 PHY_READ(&sc->sc_mii, MII_BMSR) & ma->mii_capmask; 177 else 178 sc->sc_mii.mii_capabilities = 0; 179 180 181 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 182 #define PRINT(s) printf("%s%s", sep, s); sep = ", " 183 184 printf("%s: ", sc->sc_mii.mii_dev.dv_xname); 185 if (sc->sc_tlphycap) { 186 if (sc->sc_tlphycap & TLPHY_MEDIA_10_2) { 187 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_2, 0, 188 sc->sc_mii.mii_inst), 0); 189 PRINT("10base2"); 190 } else if (sc->sc_tlphycap & TLPHY_MEDIA_10_5) { 191 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_5, 0, 192 sc->sc_mii.mii_inst), 0); 193 PRINT("10base5"); 194 } 195 } 196 if (sc->sc_mii.mii_capabilities & BMSR_MEDIAMASK) { 197 printf("%s", sep); 198 mii_phy_add_media(&sc->sc_mii); 199 } else if ((sc->sc_tlphycap & 200 (TLPHY_MEDIA_10_2 | TLPHY_MEDIA_10_5)) == 0) 201 printf("no media present"); 202 printf("\n"); 203 #undef ADD 204 #undef PRINT 205 } 206 207 int 208 tlphy_service(struct mii_softc *self, struct mii_data *mii, int cmd) 209 { 210 struct tlphy_softc *sc = (struct tlphy_softc *)self; 211 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 212 int reg; 213 214 if ((sc->sc_mii.mii_dev.dv_flags & DVF_ACTIVE) == 0) 215 return (ENXIO); 216 217 if ((sc->sc_mii.mii_flags & MIIF_DOINGAUTO) == 0 && sc->sc_need_acomp) 218 tlphy_acomp(sc); 219 220 switch (cmd) { 221 case MII_POLLSTAT: 222 /* 223 * If we're not polling our PHY instance, just return. 224 */ 225 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) 226 return (0); 227 break; 228 229 case MII_MEDIACHG: 230 /* 231 * If the media indicates a different PHY instance, 232 * isolate ourselves. 233 */ 234 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) { 235 reg = PHY_READ(&sc->sc_mii, MII_BMCR); 236 PHY_WRITE(&sc->sc_mii, MII_BMCR, reg | BMCR_ISO); 237 return (0); 238 } 239 240 /* 241 * If the interface is not up, don't do anything. 242 */ 243 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 244 break; 245 246 switch (IFM_SUBTYPE(ife->ifm_media)) { 247 case IFM_AUTO: 248 /* 249 * The ThunderLAN PHY doesn't self-configure after 250 * an autonegotiation cycle, so there's no such 251 * thing as "already in auto mode". 252 */ 253 (void) tlphy_auto(sc, 1); 254 break; 255 case IFM_10_2: 256 case IFM_10_5: 257 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0); 258 PHY_WRITE(&sc->sc_mii, MII_TLPHY_CTRL, CTRL_AUISEL); 259 delay(100000); 260 break; 261 default: 262 PHY_WRITE(&sc->sc_mii, MII_TLPHY_CTRL, 0); 263 delay(100000); 264 mii_phy_setmedia(&sc->sc_mii); 265 } 266 break; 267 268 case MII_TICK: 269 /* 270 * If we're not currently selected, just return. 271 */ 272 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) 273 return (0); 274 275 /* 276 * Only used for autonegotiation. 277 */ 278 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 279 return (0); 280 281 /* 282 * Is the interface even up? 283 */ 284 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 285 return (0); 286 287 /* 288 * XXX WHAT ABOUT CHECKING LINK ON THE BNC/AUI?! 289 */ 290 291 if (mii_phy_tick(&sc->sc_mii) == EJUSTRETURN) 292 return (0); 293 break; 294 295 case MII_DOWN: 296 mii_phy_down(&sc->sc_mii); 297 return (0); 298 } 299 300 /* Update the media status. */ 301 mii_phy_status(&sc->sc_mii); 302 303 /* Callback if something changed. */ 304 mii_phy_update(&sc->sc_mii, cmd); 305 return (0); 306 } 307 308 void 309 tlphy_status(struct mii_softc *physc) 310 { 311 struct tlphy_softc *sc = (void *) physc; 312 struct mii_data *mii = sc->sc_mii.mii_pdata; 313 int bmsr, bmcr, tlctrl; 314 315 mii->mii_media_status = IFM_AVALID; 316 mii->mii_media_active = IFM_ETHER; 317 318 bmcr = PHY_READ(&sc->sc_mii, MII_BMCR); 319 if (bmcr & BMCR_ISO) { 320 mii->mii_media_active |= IFM_NONE; 321 mii->mii_media_status = 0; 322 return; 323 } 324 325 tlctrl = PHY_READ(&sc->sc_mii, MII_TLPHY_CTRL); 326 if (tlctrl & CTRL_AUISEL) { 327 if (sc->sc_tlphycap & TLPHY_MEDIA_10_2) 328 mii->mii_media_active |= IFM_10_2; 329 else if (sc->sc_tlphycap & TLPHY_MEDIA_10_5) 330 mii->mii_media_active |= IFM_10_5; 331 else 332 printf("%s: AUI selected with no matching media !\n", 333 sc->sc_mii.mii_dev.dv_xname); 334 mii->mii_media_status |= IFM_ACTIVE; 335 return; 336 } 337 338 bmsr = PHY_READ(&sc->sc_mii, MII_BMSR) | 339 PHY_READ(&sc->sc_mii, MII_BMSR); 340 if (bmsr & BMSR_LINK) 341 mii->mii_media_status |= IFM_ACTIVE; 342 343 if (bmcr & BMCR_LOOP) 344 mii->mii_media_active |= IFM_LOOP; 345 346 /* 347 * Grr, braindead ThunderLAN PHY doesn't have any way to 348 * tell which media is actually active. (Note it also 349 * doesn't self-configure after autonegotiation.) We 350 * just have to report what's in the BMCR. 351 */ 352 if (bmcr & BMCR_FDX) 353 mii->mii_media_active |= IFM_FDX; 354 mii->mii_media_active |= IFM_10_T; 355 } 356 357 int 358 tlphy_auto(struct tlphy_softc *sc, int waitfor) 359 { 360 int error; 361 362 switch ((error = mii_phy_auto(&sc->sc_mii, waitfor))) { 363 case EIO: 364 /* 365 * Just assume we're not in full-duplex mode. 366 * XXX Check link and try AUI/BNC? 367 */ 368 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0); 369 break; 370 371 case EJUSTRETURN: 372 /* Flag that we need to program when it completes. */ 373 sc->sc_need_acomp = 1; 374 break; 375 376 default: 377 tlphy_acomp(sc); 378 } 379 380 return (error); 381 } 382 383 void 384 tlphy_acomp(struct tlphy_softc *sc) 385 { 386 int aner, anlpar; 387 388 sc->sc_need_acomp = 0; 389 390 /* 391 * Grr, braindead ThunderLAN PHY doesn't self-configure 392 * after autonegotiation. We have to do it ourselves 393 * based on the link partner status. 394 */ 395 396 aner = PHY_READ(&sc->sc_mii, MII_ANER); 397 if (aner & ANER_LPAN) { 398 anlpar = PHY_READ(&sc->sc_mii, MII_ANLPAR) & 399 PHY_READ(&sc->sc_mii, MII_ANAR); 400 if (anlpar & ANAR_10_FD) { 401 PHY_WRITE(&sc->sc_mii, MII_BMCR, BMCR_FDX); 402 return; 403 } 404 } 405 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0); 406 } 407