tlphy.c revision 1.46
1 /* $NetBSD: tlphy.c,v 1.46 2006/03/29 07:05:24 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 1.46 2006/03/29 07:05:24 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/mii/tlphyreg.h> 95 #include <dev/mii/tlphyvar.h> 96 97 /* ThunderLAN PHY can only be on a ThunderLAN */ 98 #include <dev/pci/if_tlvar.h> 99 100 struct tlphy_softc { 101 struct mii_softc sc_mii; /* generic PHY */ 102 int sc_tlphycap; 103 int sc_need_acomp; 104 }; 105 106 static int tlphymatch(struct device *, struct cfdata *, void *); 107 static void tlphyattach(struct device *, struct device *, void *); 108 109 CFATTACH_DECL(tlphy, sizeof(struct tlphy_softc), 110 tlphymatch, tlphyattach, mii_phy_detach, mii_phy_activate); 111 112 static int tlphy_service(struct mii_softc *, struct mii_data *, int); 113 static int tlphy_auto(struct tlphy_softc *, int); 114 static void tlphy_acomp(struct tlphy_softc *); 115 static void tlphy_status(struct mii_softc *); 116 117 static const struct mii_phy_funcs tlphy_funcs = { 118 tlphy_service, tlphy_status, mii_phy_reset, 119 }; 120 121 static const struct mii_phydesc tlphys[] = { 122 { MII_OUI_TI, MII_MODEL_TI_TLAN10T, 123 MII_STR_TI_TLAN10T }, 124 125 { 0, 0, 126 NULL }, 127 }; 128 129 static int 130 tlphymatch(struct device *parent, struct cfdata *match, void *aux) 131 { 132 struct mii_attach_args *ma = aux; 133 134 if (mii_phy_match(ma, tlphys) != NULL) 135 return (10); 136 137 return (0); 138 } 139 140 static void 141 tlphyattach(struct device *parent, struct device *self, void *aux) 142 { 143 struct tlphy_softc *sc = device_private(self); 144 struct tl_softc *tlsc = device_private(device_parent(self)); 145 struct mii_attach_args *ma = aux; 146 struct mii_data *mii = ma->mii_data; 147 const struct mii_phydesc *mpd; 148 const char *sep = ""; 149 150 mpd = mii_phy_match(ma, tlphys); 151 aprint_naive(": Media interface\n"); 152 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 153 154 sc->sc_mii.mii_inst = mii->mii_instance; 155 sc->sc_mii.mii_phy = ma->mii_phyno; 156 sc->sc_mii.mii_funcs = &tlphy_funcs; 157 sc->sc_mii.mii_pdata = mii; 158 sc->sc_mii.mii_flags = ma->mii_flags; 159 sc->sc_mii.mii_anegticks = 5; 160 161 PHY_RESET(&sc->sc_mii); 162 163 /* 164 * Note that if we're on a device that also supports 100baseTX, 165 * we are not going to want to use the built-in 10baseT port, 166 * since there will be another PHY on the MII wired up to the 167 * UTP connector. The parent indicates this to us by specifying 168 * the TLPHY_MEDIA_NO_10_T bit. 169 */ 170 sc->sc_tlphycap = tlsc->tl_product->tp_tlphymedia; 171 if ((sc->sc_tlphycap & TLPHY_MEDIA_NO_10_T) == 0) 172 sc->sc_mii.mii_capabilities = 173 PHY_READ(&sc->sc_mii, MII_BMSR) & ma->mii_capmask; 174 else 175 sc->sc_mii.mii_capabilities = 0; 176 177 178 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 179 #define PRINT(str) aprint_normal("%s%s", sep, str); sep = ", " 180 181 aprint_normal("%s: ", sc->sc_mii.mii_dev.dv_xname); 182 if (sc->sc_tlphycap) { 183 if (sc->sc_tlphycap & TLPHY_MEDIA_10_2) { 184 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_2, 0, 185 sc->sc_mii.mii_inst), 0); 186 PRINT("10base2"); 187 } else if (sc->sc_tlphycap & TLPHY_MEDIA_10_5) { 188 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_5, 0, 189 sc->sc_mii.mii_inst), 0); 190 PRINT("10base5"); 191 } 192 } 193 if (sc->sc_mii.mii_capabilities & BMSR_MEDIAMASK) { 194 aprint_normal("%s", sep); 195 mii_phy_add_media(&sc->sc_mii); 196 } else if ((sc->sc_tlphycap & 197 (TLPHY_MEDIA_10_2 | TLPHY_MEDIA_10_5)) == 0) 198 aprint_error("no media present"); 199 aprint_normal("\n"); 200 #undef ADD 201 #undef PRINT 202 } 203 204 static int 205 tlphy_service(struct mii_softc *self, struct mii_data *mii, int cmd) 206 { 207 struct tlphy_softc *sc = device_private(self); 208 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 209 int reg; 210 211 if (!device_is_active(&sc->sc_mii.mii_dev)) 212 return (ENXIO); 213 214 if ((sc->sc_mii.mii_flags & MIIF_DOINGAUTO) == 0 && sc->sc_need_acomp) 215 tlphy_acomp(sc); 216 217 switch (cmd) { 218 case MII_POLLSTAT: 219 /* 220 * If we're not polling our PHY instance, just return. 221 */ 222 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) 223 return (0); 224 break; 225 226 case MII_MEDIACHG: 227 /* 228 * If the media indicates a different PHY instance, 229 * isolate ourselves. 230 */ 231 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) { 232 reg = PHY_READ(&sc->sc_mii, MII_BMCR); 233 PHY_WRITE(&sc->sc_mii, MII_BMCR, reg | BMCR_ISO); 234 return (0); 235 } 236 237 /* 238 * If the interface is not up, don't do anything. 239 */ 240 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 241 break; 242 243 switch (IFM_SUBTYPE(ife->ifm_media)) { 244 case IFM_AUTO: 245 /* 246 * The ThunderLAN PHY doesn't self-configure after 247 * an autonegotiation cycle, so there's no such 248 * thing as "already in auto mode". 249 */ 250 (void) tlphy_auto(sc, 1); 251 break; 252 case IFM_10_2: 253 case IFM_10_5: 254 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0); 255 PHY_WRITE(&sc->sc_mii, MII_TLPHY_CTRL, CTRL_AUISEL); 256 delay(100000); 257 break; 258 default: 259 PHY_WRITE(&sc->sc_mii, MII_TLPHY_CTRL, 0); 260 delay(100000); 261 mii_phy_setmedia(&sc->sc_mii); 262 } 263 break; 264 265 case MII_TICK: 266 /* 267 * If we're not currently selected, just return. 268 */ 269 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) 270 return (0); 271 272 /* 273 * Only used for autonegotiation. 274 */ 275 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 276 return (0); 277 278 /* 279 * Is the interface even up? 280 */ 281 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 282 return (0); 283 284 /* 285 * XXX WHAT ABOUT CHECKING LINK ON THE BNC/AUI?! 286 */ 287 288 if (mii_phy_tick(&sc->sc_mii) == EJUSTRETURN) 289 return (0); 290 break; 291 292 case MII_DOWN: 293 mii_phy_down(&sc->sc_mii); 294 return (0); 295 } 296 297 /* Update the media status. */ 298 mii_phy_status(&sc->sc_mii); 299 300 /* Callback if something changed. */ 301 mii_phy_update(&sc->sc_mii, cmd); 302 return (0); 303 } 304 305 static void 306 tlphy_status(struct mii_softc *physc) 307 { 308 struct tlphy_softc *sc = (void *) physc; 309 struct mii_data *mii = sc->sc_mii.mii_pdata; 310 int bmsr, bmcr, tlctrl; 311 312 mii->mii_media_status = IFM_AVALID; 313 mii->mii_media_active = IFM_ETHER; 314 315 bmcr = PHY_READ(&sc->sc_mii, MII_BMCR); 316 if (bmcr & BMCR_ISO) { 317 mii->mii_media_active |= IFM_NONE; 318 mii->mii_media_status = 0; 319 return; 320 } 321 322 tlctrl = PHY_READ(&sc->sc_mii, MII_TLPHY_CTRL); 323 if (tlctrl & CTRL_AUISEL) { 324 if (sc->sc_tlphycap & TLPHY_MEDIA_10_2) 325 mii->mii_media_active |= IFM_10_2; 326 else if (sc->sc_tlphycap & TLPHY_MEDIA_10_5) 327 mii->mii_media_active |= IFM_10_5; 328 else 329 printf("%s: AUI selected with no matching media !\n", 330 sc->sc_mii.mii_dev.dv_xname); 331 mii->mii_media_status |= IFM_ACTIVE; 332 return; 333 } 334 335 bmsr = PHY_READ(&sc->sc_mii, MII_BMSR) | 336 PHY_READ(&sc->sc_mii, MII_BMSR); 337 if (bmsr & BMSR_LINK) 338 mii->mii_media_status |= IFM_ACTIVE; 339 340 if (bmcr & BMCR_LOOP) 341 mii->mii_media_active |= IFM_LOOP; 342 343 /* 344 * Grr, braindead ThunderLAN PHY doesn't have any way to 345 * tell which media is actually active. (Note it also 346 * doesn't self-configure after autonegotiation.) We 347 * just have to report what's in the BMCR. 348 */ 349 if (bmcr & BMCR_FDX) 350 mii->mii_media_active |= IFM_FDX; 351 mii->mii_media_active |= IFM_10_T; 352 } 353 354 static int 355 tlphy_auto(struct tlphy_softc *sc, int waitfor) 356 { 357 int error; 358 359 switch ((error = mii_phy_auto(&sc->sc_mii, waitfor))) { 360 case EIO: 361 /* 362 * Just assume we're not in full-duplex mode. 363 * XXX Check link and try AUI/BNC? 364 */ 365 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0); 366 break; 367 368 case EJUSTRETURN: 369 /* Flag that we need to program when it completes. */ 370 sc->sc_need_acomp = 1; 371 break; 372 373 default: 374 tlphy_acomp(sc); 375 } 376 377 return (error); 378 } 379 380 static void 381 tlphy_acomp(struct tlphy_softc *sc) 382 { 383 int aner, anlpar; 384 385 sc->sc_need_acomp = 0; 386 387 /* 388 * Grr, braindead ThunderLAN PHY doesn't self-configure 389 * after autonegotiation. We have to do it ourselves 390 * based on the link partner status. 391 */ 392 393 aner = PHY_READ(&sc->sc_mii, MII_ANER); 394 if (aner & ANER_LPAN) { 395 anlpar = PHY_READ(&sc->sc_mii, MII_ANLPAR) & 396 PHY_READ(&sc->sc_mii, MII_ANAR); 397 if (anlpar & ANAR_10_FD) { 398 PHY_WRITE(&sc->sc_mii, MII_BMCR, BMCR_FDX); 399 return; 400 } 401 } 402 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0); 403 } 404
Indexes created Tue Sep 23 13:09:54 GMT 2025