tlphy.c revision 1.57
1 /* $NetBSD: tlphy.c,v 1.57 2008/05/06 11:35:38 tsutsui 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 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 3. All advertising materials mentioning features or use of this software 45 * must display the following acknowledgement: 46 * This product includes software developed by Manuel Bouyer. 47 * 4. The name of the author may not be used to endorse or promote products 48 * derived from this software without specific prior written permission. 49 * 50 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 51 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 52 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 53 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 54 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 55 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 56 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 57 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 58 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 59 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 60 */ 61 62 /* 63 * Driver for Texas Instruments's ThunderLAN PHYs 64 */ 65 66 #include <sys/cdefs.h> 67 __KERNEL_RCSID(0, "$NetBSD: tlphy.c,v 1.57 2008/05/06 11:35:38 tsutsui Exp $"); 68 69 #include <sys/param.h> 70 #include <sys/systm.h> 71 #include <sys/kernel.h> 72 #include <sys/device.h> 73 #include <sys/socket.h> 74 #include <sys/errno.h> 75 76 #include <sys/bus.h> 77 78 #include <net/if.h> 79 #include <net/if_media.h> 80 81 #include <net/if_ether.h> 82 83 #include <dev/mii/mii.h> 84 #include <dev/mii/miivar.h> 85 #include <dev/mii/miidevs.h> 86 87 #include <dev/mii/tlphyreg.h> 88 #include <dev/mii/tlphyvar.h> 89 90 /* ThunderLAN PHY can only be on a ThunderLAN */ 91 #include <dev/pci/if_tlvar.h> 92 93 struct tlphy_softc { 94 struct mii_softc sc_mii; /* generic PHY */ 95 int sc_tlphycap; 96 int sc_need_acomp; 97 }; 98 99 static int tlphymatch(device_t, cfdata_t, void *); 100 static void tlphyattach(device_t, device_t, void *); 101 102 CFATTACH_DECL_NEW(tlphy, sizeof(struct tlphy_softc), 103 tlphymatch, tlphyattach, mii_phy_detach, mii_phy_activate); 104 105 static int tlphy_service(struct mii_softc *, struct mii_data *, int); 106 static int tlphy_auto(struct tlphy_softc *, int); 107 static void tlphy_acomp(struct tlphy_softc *); 108 static void tlphy_status(struct mii_softc *); 109 110 static const struct mii_phy_funcs tlphy_funcs = { 111 tlphy_service, tlphy_status, mii_phy_reset, 112 }; 113 114 static const struct mii_phydesc tlphys[] = { 115 { MII_OUI_TI, MII_MODEL_TI_TLAN10T, 116 MII_STR_TI_TLAN10T }, 117 118 { 0, 0, 119 NULL }, 120 }; 121 122 static int 123 tlphymatch(device_t parent, cfdata_t match, void *aux) 124 { 125 struct mii_attach_args *ma = aux; 126 127 if (mii_phy_match(ma, tlphys) != NULL) 128 return (10); 129 130 return (0); 131 } 132 133 static void 134 tlphyattach(device_t parent, device_t self, void *aux) 135 { 136 struct tlphy_softc *tsc = device_private(self); 137 struct mii_softc *sc = &tsc->sc_mii; 138 struct tl_softc *tlsc = device_private(device_parent(self)); 139 struct mii_attach_args *ma = aux; 140 struct mii_data *mii = ma->mii_data; 141 const struct mii_phydesc *mpd; 142 const char *sep = ""; 143 144 mpd = mii_phy_match(ma, tlphys); 145 aprint_naive(": Media interface\n"); 146 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 147 148 sc->mii_dev = self; 149 sc->mii_inst = mii->mii_instance; 150 sc->mii_phy = ma->mii_phyno; 151 sc->mii_funcs = &tlphy_funcs; 152 sc->mii_pdata = mii; 153 sc->mii_flags = ma->mii_flags; 154 sc->mii_anegticks = MII_ANEGTICKS; 155 156 PHY_RESET(sc); 157 158 /* 159 * Note that if we're on a device that also supports 100baseTX, 160 * we are not going to want to use the built-in 10baseT port, 161 * since there will be another PHY on the MII wired up to the 162 * UTP connector. The parent indicates this to us by specifying 163 * the TLPHY_MEDIA_NO_10_T bit. 164 */ 165 tsc->sc_tlphycap = tlsc->tl_product->tp_tlphymedia; 166 if ((tsc->sc_tlphycap & TLPHY_MEDIA_NO_10_T) == 0) 167 sc->mii_capabilities = 168 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 169 else 170 sc->mii_capabilities = 0; 171 172 173 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 174 #define PRINT(str) aprint_normal("%s%s", sep, str); sep = ", " 175 176 aprint_normal_dev(self, ""); 177 if (tsc->sc_tlphycap) { 178 if (tsc->sc_tlphycap & TLPHY_MEDIA_10_2) { 179 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_2, 0, 180 sc->mii_inst), 0); 181 PRINT("10base2"); 182 } else if (tsc->sc_tlphycap & TLPHY_MEDIA_10_5) { 183 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_5, 0, 184 sc->mii_inst), 0); 185 PRINT("10base5"); 186 } 187 } 188 if (sc->mii_capabilities & BMSR_MEDIAMASK) { 189 aprint_normal("%s", sep); 190 mii_phy_add_media(sc); 191 } else if ((tsc->sc_tlphycap & 192 (TLPHY_MEDIA_10_2 | TLPHY_MEDIA_10_5)) == 0) 193 aprint_error("no media present"); 194 aprint_normal("\n"); 195 #undef ADD 196 #undef PRINT 197 198 if (!pmf_device_register(self, NULL, mii_phy_resume)) 199 aprint_error_dev(self, "couldn't establish power handler\n"); 200 } 201 202 static int 203 tlphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 204 { 205 struct tlphy_softc *tsc = (struct tlphy_softc *)sc; 206 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 207 int reg; 208 209 if ((sc->mii_flags & MIIF_DOINGAUTO) == 0 && tsc->sc_need_acomp) 210 tlphy_acomp(tsc); 211 212 switch (cmd) { 213 case MII_POLLSTAT: 214 /* 215 * If we're not polling our PHY instance, just return. 216 */ 217 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 218 return (0); 219 break; 220 221 case MII_MEDIACHG: 222 /* 223 * If the media indicates a different PHY instance, 224 * isolate ourselves. 225 */ 226 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 227 reg = PHY_READ(sc, MII_BMCR); 228 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 229 return (0); 230 } 231 232 /* 233 * If the interface is not up, don't do anything. 234 */ 235 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 236 break; 237 238 switch (IFM_SUBTYPE(ife->ifm_media)) { 239 case IFM_AUTO: 240 /* 241 * The ThunderLAN PHY doesn't self-configure after 242 * an autonegotiation cycle, so there's no such 243 * thing as "already in auto mode". 244 */ 245 (void) tlphy_auto(tsc, 1); 246 break; 247 case IFM_10_2: 248 case IFM_10_5: 249 PHY_WRITE(sc, MII_BMCR, 0); 250 PHY_WRITE(sc, MII_TLPHY_CTRL, CTRL_AUISEL); 251 delay(100000); 252 break; 253 default: 254 PHY_WRITE(sc, MII_TLPHY_CTRL, 0); 255 delay(100000); 256 mii_phy_setmedia(sc); 257 } 258 break; 259 260 case MII_TICK: 261 /* 262 * If we're not currently selected, just return. 263 */ 264 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 265 return (0); 266 267 /* 268 * Only used for autonegotiation. 269 */ 270 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 271 return (0); 272 273 /* 274 * Is the interface even up? 275 */ 276 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 277 return (0); 278 279 /* 280 * XXX WHAT ABOUT CHECKING LINK ON THE BNC/AUI?! 281 */ 282 283 if (mii_phy_tick(sc) == EJUSTRETURN) 284 return (0); 285 break; 286 287 case MII_DOWN: 288 mii_phy_down(sc); 289 return (0); 290 } 291 292 /* Update the media status. */ 293 mii_phy_status(sc); 294 295 /* Callback if something changed. */ 296 mii_phy_update(sc, cmd); 297 return (0); 298 } 299 300 static void 301 tlphy_status(struct mii_softc *sc) 302 { 303 struct tlphy_softc *tsc = (struct tlphy_softc *)sc; 304 struct mii_data *mii = sc->mii_pdata; 305 int bmsr, bmcr, tlctrl; 306 307 mii->mii_media_status = IFM_AVALID; 308 mii->mii_media_active = IFM_ETHER; 309 310 bmcr = PHY_READ(sc, MII_BMCR); 311 if (bmcr & BMCR_ISO) { 312 mii->mii_media_active |= IFM_NONE; 313 mii->mii_media_status = 0; 314 return; 315 } 316 317 tlctrl = PHY_READ(sc, MII_TLPHY_CTRL); 318 if (tlctrl & CTRL_AUISEL) { 319 if (tsc->sc_tlphycap & TLPHY_MEDIA_10_2) 320 mii->mii_media_active |= IFM_10_2; 321 else if (tsc->sc_tlphycap & TLPHY_MEDIA_10_5) 322 mii->mii_media_active |= IFM_10_5; 323 else 324 printf("%s: AUI selected with no matching media !\n", 325 device_xname(sc->mii_dev)); 326 mii->mii_media_status |= IFM_ACTIVE; 327 return; 328 } 329 330 bmsr = PHY_READ(sc, MII_BMSR) | 331 PHY_READ(sc, MII_BMSR); 332 if (bmsr & BMSR_LINK) 333 mii->mii_media_status |= IFM_ACTIVE; 334 335 if (bmcr & BMCR_LOOP) 336 mii->mii_media_active |= IFM_LOOP; 337 338 /* 339 * Grr, braindead ThunderLAN PHY doesn't have any way to 340 * tell which media is actually active. (Note it also 341 * doesn't self-configure after autonegotiation.) We 342 * just have to report what's in the BMCR. 343 */ 344 if (bmcr & BMCR_FDX) 345 mii->mii_media_active |= IFM_FDX; 346 mii->mii_media_active |= IFM_10_T; 347 } 348 349 static int 350 tlphy_auto(struct tlphy_softc *tsc, int waitfor) 351 { 352 struct mii_softc *sc = &tsc->sc_mii; 353 int error; 354 355 switch ((error = mii_phy_auto(sc, waitfor))) { 356 case EIO: 357 /* 358 * Just assume we're not in full-duplex mode. 359 * XXX Check link and try AUI/BNC? 360 */ 361 PHY_WRITE(sc, MII_BMCR, 0); 362 break; 363 364 case EJUSTRETURN: 365 /* Flag that we need to program when it completes. */ 366 tsc->sc_need_acomp = 1; 367 break; 368 369 default: 370 tlphy_acomp(tsc); 371 } 372 373 return (error); 374 } 375 376 static void 377 tlphy_acomp(struct tlphy_softc *tsc) 378 { 379 struct mii_softc *sc = &tsc->sc_mii; 380 int aner, anlpar; 381 382 tsc->sc_need_acomp = 0; 383 384 /* 385 * Grr, braindead ThunderLAN PHY doesn't self-configure 386 * after autonegotiation. We have to do it ourselves 387 * based on the link partner status. 388 */ 389 390 aner = PHY_READ(sc, MII_ANER); 391 if (aner & ANER_LPAN) { 392 anlpar = PHY_READ(sc, MII_ANLPAR) & 393 PHY_READ(sc, MII_ANAR); 394 if (anlpar & ANAR_10_FD) { 395 PHY_WRITE(sc, MII_BMCR, BMCR_FDX); 396 return; 397 } 398 } 399 PHY_WRITE(sc, MII_BMCR, 0); 400 } 401
Indexes created Wed Sep 24 15:09:51 GMT 2025