1 /* $NetBSD: tlphy.c,v 1.38 2002/10/23 01:50:11 perry 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 1.38 2002/10/23 01:50:11 perry 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 CFATTACH_DECL(tlphy, sizeof(struct tlphy_softc), 112 tlphymatch, tlphyattach, mii_phy_detach, mii_phy_activate); 113 114 int tlphy_service(struct mii_softc *, struct mii_data *, int); 115 int tlphy_auto(struct tlphy_softc *, int); 116 void tlphy_acomp(struct tlphy_softc *); 117 void tlphy_status(struct mii_softc *); 118 119 const struct mii_phy_funcs tlphy_funcs = { 120 tlphy_service, tlphy_status, mii_phy_reset, 121 }; 122 123 const struct mii_phydesc tlphys[] = { 124 { MII_OUI_TI, MII_MODEL_TI_TLAN10T, 125 MII_STR_TI_TLAN10T }, 126 127 { 0, 0, 128 NULL }, 129 }; 130 131 int 132 tlphymatch(struct device *parent, struct cfdata *match, void *aux) 133 { 134 struct mii_attach_args *ma = aux; 135 136 if (mii_phy_match(ma, tlphys) != NULL) 137 return (10); 138 139 return (0); 140 } 141 142 void 143 tlphyattach(struct device *parent, struct device *self, void *aux) 144 { 145 struct tlphy_softc *sc = (struct tlphy_softc *)self; 146 struct tl_softc *tlsc = (struct tl_softc *)self->dv_parent; 147 struct mii_attach_args *ma = aux; 148 struct mii_data *mii = ma->mii_data; 149 const struct mii_phydesc *mpd; 150 const char *sep = ""; 151 152 mpd = mii_phy_match(ma, tlphys); 153 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 154 155 sc->sc_mii.mii_inst = mii->mii_instance; 156 sc->sc_mii.mii_phy = ma->mii_phyno; 157 sc->sc_mii.mii_funcs = &tlphy_funcs; 158 sc->sc_mii.mii_pdata = mii; 159 sc->sc_mii.mii_flags = ma->mii_flags; 160 sc->sc_mii.mii_anegticks = 5; 161 162 PHY_RESET(&sc->sc_mii); 163 164 /* 165 * Note that if we're on a device that also supports 100baseTX, 166 * we are not going to want to use the built-in 10baseT port, 167 * since there will be another PHY on the MII wired up to the 168 * UTP connector. The parent indicates this to us by specifying 169 * the TLPHY_MEDIA_NO_10_T bit. 170 */ 171 sc->sc_tlphycap = tlsc->tl_product->tp_tlphymedia; 172 if ((sc->sc_tlphycap & TLPHY_MEDIA_NO_10_T) == 0) 173 sc->sc_mii.mii_capabilities = 174 PHY_READ(&sc->sc_mii, MII_BMSR) & ma->mii_capmask; 175 else 176 sc->sc_mii.mii_capabilities = 0; 177 178 179 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 180 #define PRINT(str) printf("%s%s", sep, str); sep = ", " 181 182 printf("%s: ", sc->sc_mii.mii_dev.dv_xname); 183 if (sc->sc_tlphycap) { 184 if (sc->sc_tlphycap & TLPHY_MEDIA_10_2) { 185 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_2, 0, 186 sc->sc_mii.mii_inst), 0); 187 PRINT("10base2"); 188 } else if (sc->sc_tlphycap & TLPHY_MEDIA_10_5) { 189 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_5, 0, 190 sc->sc_mii.mii_inst), 0); 191 PRINT("10base5"); 192 } 193 } 194 if (sc->sc_mii.mii_capabilities & BMSR_MEDIAMASK) { 195 printf("%s", sep); 196 mii_phy_add_media(&sc->sc_mii); 197 } else if ((sc->sc_tlphycap & 198 (TLPHY_MEDIA_10_2 | TLPHY_MEDIA_10_5)) == 0) 199 printf("no media present"); 200 printf("\n"); 201 #undef ADD 202 #undef PRINT 203 } 204 205 int 206 tlphy_service(struct mii_softc *self, struct mii_data *mii, 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 if ((sc->sc_mii.mii_dev.dv_flags & DVF_ACTIVE) == 0) 213 return (ENXIO); 214 215 if ((sc->sc_mii.mii_flags & MIIF_DOINGAUTO) == 0 && sc->sc_need_acomp) 216 tlphy_acomp(sc); 217 218 switch (cmd) { 219 case MII_POLLSTAT: 220 /* 221 * If we're not polling our PHY instance, just return. 222 */ 223 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) 224 return (0); 225 break; 226 227 case MII_MEDIACHG: 228 /* 229 * If the media indicates a different PHY instance, 230 * isolate ourselves. 231 */ 232 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) { 233 reg = PHY_READ(&sc->sc_mii, MII_BMCR); 234 PHY_WRITE(&sc->sc_mii, MII_BMCR, reg | BMCR_ISO); 235 return (0); 236 } 237 238 /* 239 * If the interface is not up, don't do anything. 240 */ 241 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 242 break; 243 244 switch (IFM_SUBTYPE(ife->ifm_media)) { 245 case IFM_AUTO: 246 /* 247 * The ThunderLAN PHY doesn't self-configure after 248 * an autonegotiation cycle, so there's no such 249 * thing as "already in auto mode". 250 */ 251 (void) tlphy_auto(sc, 1); 252 break; 253 case IFM_10_2: 254 case IFM_10_5: 255 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0); 256 PHY_WRITE(&sc->sc_mii, MII_TLPHY_CTRL, CTRL_AUISEL); 257 delay(100000); 258 break; 259 default: 260 PHY_WRITE(&sc->sc_mii, MII_TLPHY_CTRL, 0); 261 delay(100000); 262 mii_phy_setmedia(&sc->sc_mii); 263 } 264 break; 265 266 case MII_TICK: 267 /* 268 * If we're not currently selected, just return. 269 */ 270 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) 271 return (0); 272 273 /* 274 * Only used for autonegotiation. 275 */ 276 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 277 return (0); 278 279 /* 280 * Is the interface even up? 281 */ 282 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 283 return (0); 284 285 /* 286 * XXX WHAT ABOUT CHECKING LINK ON THE BNC/AUI?! 287 */ 288 289 if (mii_phy_tick(&sc->sc_mii) == EJUSTRETURN) 290 return (0); 291 break; 292 293 case MII_DOWN: 294 mii_phy_down(&sc->sc_mii); 295 return (0); 296 } 297 298 /* Update the media status. */ 299 mii_phy_status(&sc->sc_mii); 300 301 /* Callback if something changed. */ 302 mii_phy_update(&sc->sc_mii, cmd); 303 return (0); 304 } 305 306 void 307 tlphy_status(struct mii_softc *physc) 308 { 309 struct tlphy_softc *sc = (void *) physc; 310 struct mii_data *mii = sc->sc_mii.mii_pdata; 311 int bmsr, bmcr, tlctrl; 312 313 mii->mii_media_status = IFM_AVALID; 314 mii->mii_media_active = IFM_ETHER; 315 316 bmcr = PHY_READ(&sc->sc_mii, MII_BMCR); 317 if (bmcr & BMCR_ISO) { 318 mii->mii_media_active |= IFM_NONE; 319 mii->mii_media_status = 0; 320 return; 321 } 322 323 tlctrl = PHY_READ(&sc->sc_mii, MII_TLPHY_CTRL); 324 if (tlctrl & CTRL_AUISEL) { 325 if (sc->sc_tlphycap & TLPHY_MEDIA_10_2) 326 mii->mii_media_active |= IFM_10_2; 327 else if (sc->sc_tlphycap & TLPHY_MEDIA_10_5) 328 mii->mii_media_active |= IFM_10_5; 329 else 330 printf("%s: AUI selected with no matching media !\n", 331 sc->sc_mii.mii_dev.dv_xname); 332 mii->mii_media_status |= IFM_ACTIVE; 333 return; 334 } 335 336 bmsr = PHY_READ(&sc->sc_mii, MII_BMSR) | 337 PHY_READ(&sc->sc_mii, MII_BMSR); 338 if (bmsr & BMSR_LINK) 339 mii->mii_media_status |= IFM_ACTIVE; 340 341 if (bmcr & BMCR_LOOP) 342 mii->mii_media_active |= IFM_LOOP; 343 344 /* 345 * Grr, braindead ThunderLAN PHY doesn't have any way to 346 * tell which media is actually active. (Note it also 347 * doesn't self-configure after autonegotiation.) We 348 * just have to report what's in the BMCR. 349 */ 350 if (bmcr & BMCR_FDX) 351 mii->mii_media_active |= IFM_FDX; 352 mii->mii_media_active |= IFM_10_T; 353 } 354 355 int 356 tlphy_auto(struct tlphy_softc *sc, int waitfor) 357 { 358 int error; 359 360 switch ((error = mii_phy_auto(&sc->sc_mii, waitfor))) { 361 case EIO: 362 /* 363 * Just assume we're not in full-duplex mode. 364 * XXX Check link and try AUI/BNC? 365 */ 366 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0); 367 break; 368 369 case EJUSTRETURN: 370 /* Flag that we need to program when it completes. */ 371 sc->sc_need_acomp = 1; 372 break; 373 374 default: 375 tlphy_acomp(sc); 376 } 377 378 return (error); 379 } 380 381 void 382 tlphy_acomp(struct tlphy_softc *sc) 383 { 384 int aner, anlpar; 385 386 sc->sc_need_acomp = 0; 387 388 /* 389 * Grr, braindead ThunderLAN PHY doesn't self-configure 390 * after autonegotiation. We have to do it ourselves 391 * based on the link partner status. 392 */ 393 394 aner = PHY_READ(&sc->sc_mii, MII_ANER); 395 if (aner & ANER_LPAN) { 396 anlpar = PHY_READ(&sc->sc_mii, MII_ANLPAR) & 397 PHY_READ(&sc->sc_mii, MII_ANAR); 398 if (anlpar & ANAR_10_FD) { 399 PHY_WRITE(&sc->sc_mii, MII_BMCR, BMCR_FDX); 400 return; 401 } 402 } 403 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0); 404 } 405