tlphy.c revision 1.39
1 /* $NetBSD: tlphy.c,v 1.39 2003/04/29 01:49:34 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 1.39 2003/04/29 01:49:34 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 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 aprint_naive(": Media interface\n"); 154 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 155 156 sc->sc_mii.mii_inst = mii->mii_instance; 157 sc->sc_mii.mii_phy = ma->mii_phyno; 158 sc->sc_mii.mii_funcs = &tlphy_funcs; 159 sc->sc_mii.mii_pdata = mii; 160 sc->sc_mii.mii_flags = ma->mii_flags; 161 sc->sc_mii.mii_anegticks = 5; 162 163 PHY_RESET(&sc->sc_mii); 164 165 /* 166 * Note that if we're on a device that also supports 100baseTX, 167 * we are not going to want to use the built-in 10baseT port, 168 * since there will be another PHY on the MII wired up to the 169 * UTP connector. The parent indicates this to us by specifying 170 * the TLPHY_MEDIA_NO_10_T bit. 171 */ 172 sc->sc_tlphycap = tlsc->tl_product->tp_tlphymedia; 173 if ((sc->sc_tlphycap & TLPHY_MEDIA_NO_10_T) == 0) 174 sc->sc_mii.mii_capabilities = 175 PHY_READ(&sc->sc_mii, MII_BMSR) & ma->mii_capmask; 176 else 177 sc->sc_mii.mii_capabilities = 0; 178 179 180 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 181 #define PRINT(str) aprint_normal("%s%s", sep, str); sep = ", " 182 183 aprint_normal("%s: ", sc->sc_mii.mii_dev.dv_xname); 184 if (sc->sc_tlphycap) { 185 if (sc->sc_tlphycap & TLPHY_MEDIA_10_2) { 186 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_2, 0, 187 sc->sc_mii.mii_inst), 0); 188 PRINT("10base2"); 189 } else if (sc->sc_tlphycap & TLPHY_MEDIA_10_5) { 190 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_5, 0, 191 sc->sc_mii.mii_inst), 0); 192 PRINT("10base5"); 193 } 194 } 195 if (sc->sc_mii.mii_capabilities & BMSR_MEDIAMASK) { 196 aprint_normal("%s", sep); 197 mii_phy_add_media(&sc->sc_mii); 198 } else if ((sc->sc_tlphycap & 199 (TLPHY_MEDIA_10_2 | TLPHY_MEDIA_10_5)) == 0) 200 aprint_error("no media present"); 201 aprint_normal("\n"); 202 #undef ADD 203 #undef PRINT 204 } 205 206 int 207 tlphy_service(struct mii_softc *self, struct mii_data *mii, int cmd) 208 { 209 struct tlphy_softc *sc = (struct tlphy_softc *)self; 210 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 211 int reg; 212 213 if ((sc->sc_mii.mii_dev.dv_flags & DVF_ACTIVE) == 0) 214 return (ENXIO); 215 216 if ((sc->sc_mii.mii_flags & MIIF_DOINGAUTO) == 0 && sc->sc_need_acomp) 217 tlphy_acomp(sc); 218 219 switch (cmd) { 220 case MII_POLLSTAT: 221 /* 222 * If we're not polling our PHY instance, just return. 223 */ 224 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) 225 return (0); 226 break; 227 228 case MII_MEDIACHG: 229 /* 230 * If the media indicates a different PHY instance, 231 * isolate ourselves. 232 */ 233 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) { 234 reg = PHY_READ(&sc->sc_mii, MII_BMCR); 235 PHY_WRITE(&sc->sc_mii, MII_BMCR, reg | BMCR_ISO); 236 return (0); 237 } 238 239 /* 240 * If the interface is not up, don't do anything. 241 */ 242 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 243 break; 244 245 switch (IFM_SUBTYPE(ife->ifm_media)) { 246 case IFM_AUTO: 247 /* 248 * The ThunderLAN PHY doesn't self-configure after 249 * an autonegotiation cycle, so there's no such 250 * thing as "already in auto mode". 251 */ 252 (void) tlphy_auto(sc, 1); 253 break; 254 case IFM_10_2: 255 case IFM_10_5: 256 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0); 257 PHY_WRITE(&sc->sc_mii, MII_TLPHY_CTRL, CTRL_AUISEL); 258 delay(100000); 259 break; 260 default: 261 PHY_WRITE(&sc->sc_mii, MII_TLPHY_CTRL, 0); 262 delay(100000); 263 mii_phy_setmedia(&sc->sc_mii); 264 } 265 break; 266 267 case MII_TICK: 268 /* 269 * If we're not currently selected, just return. 270 */ 271 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) 272 return (0); 273 274 /* 275 * Only used for autonegotiation. 276 */ 277 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 278 return (0); 279 280 /* 281 * Is the interface even up? 282 */ 283 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 284 return (0); 285 286 /* 287 * XXX WHAT ABOUT CHECKING LINK ON THE BNC/AUI?! 288 */ 289 290 if (mii_phy_tick(&sc->sc_mii) == EJUSTRETURN) 291 return (0); 292 break; 293 294 case MII_DOWN: 295 mii_phy_down(&sc->sc_mii); 296 return (0); 297 } 298 299 /* Update the media status. */ 300 mii_phy_status(&sc->sc_mii); 301 302 /* Callback if something changed. */ 303 mii_phy_update(&sc->sc_mii, cmd); 304 return (0); 305 } 306 307 void 308 tlphy_status(struct mii_softc *physc) 309 { 310 struct tlphy_softc *sc = (void *) physc; 311 struct mii_data *mii = sc->sc_mii.mii_pdata; 312 int bmsr, bmcr, tlctrl; 313 314 mii->mii_media_status = IFM_AVALID; 315 mii->mii_media_active = IFM_ETHER; 316 317 bmcr = PHY_READ(&sc->sc_mii, MII_BMCR); 318 if (bmcr & BMCR_ISO) { 319 mii->mii_media_active |= IFM_NONE; 320 mii->mii_media_status = 0; 321 return; 322 } 323 324 tlctrl = PHY_READ(&sc->sc_mii, MII_TLPHY_CTRL); 325 if (tlctrl & CTRL_AUISEL) { 326 if (sc->sc_tlphycap & TLPHY_MEDIA_10_2) 327 mii->mii_media_active |= IFM_10_2; 328 else if (sc->sc_tlphycap & TLPHY_MEDIA_10_5) 329 mii->mii_media_active |= IFM_10_5; 330 else 331 printf("%s: AUI selected with no matching media !\n", 332 sc->sc_mii.mii_dev.dv_xname); 333 mii->mii_media_status |= IFM_ACTIVE; 334 return; 335 } 336 337 bmsr = PHY_READ(&sc->sc_mii, MII_BMSR) | 338 PHY_READ(&sc->sc_mii, MII_BMSR); 339 if (bmsr & BMSR_LINK) 340 mii->mii_media_status |= IFM_ACTIVE; 341 342 if (bmcr & BMCR_LOOP) 343 mii->mii_media_active |= IFM_LOOP; 344 345 /* 346 * Grr, braindead ThunderLAN PHY doesn't have any way to 347 * tell which media is actually active. (Note it also 348 * doesn't self-configure after autonegotiation.) We 349 * just have to report what's in the BMCR. 350 */ 351 if (bmcr & BMCR_FDX) 352 mii->mii_media_active |= IFM_FDX; 353 mii->mii_media_active |= IFM_10_T; 354 } 355 356 int 357 tlphy_auto(struct tlphy_softc *sc, int waitfor) 358 { 359 int error; 360 361 switch ((error = mii_phy_auto(&sc->sc_mii, waitfor))) { 362 case EIO: 363 /* 364 * Just assume we're not in full-duplex mode. 365 * XXX Check link and try AUI/BNC? 366 */ 367 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0); 368 break; 369 370 case EJUSTRETURN: 371 /* Flag that we need to program when it completes. */ 372 sc->sc_need_acomp = 1; 373 break; 374 375 default: 376 tlphy_acomp(sc); 377 } 378 379 return (error); 380 } 381 382 void 383 tlphy_acomp(struct tlphy_softc *sc) 384 { 385 int aner, anlpar; 386 387 sc->sc_need_acomp = 0; 388 389 /* 390 * Grr, braindead ThunderLAN PHY doesn't self-configure 391 * after autonegotiation. We have to do it ourselves 392 * based on the link partner status. 393 */ 394 395 aner = PHY_READ(&sc->sc_mii, MII_ANER); 396 if (aner & ANER_LPAN) { 397 anlpar = PHY_READ(&sc->sc_mii, MII_ANLPAR) & 398 PHY_READ(&sc->sc_mii, MII_ANAR); 399 if (anlpar & ANAR_10_FD) { 400 PHY_WRITE(&sc->sc_mii, MII_BMCR, BMCR_FDX); 401 return; 402 } 403 } 404 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0); 405 } 406
Indexes created Thu Sep 25 16:09:42 GMT 2025