tlphy.c revision 1.55
1 /* $NetBSD: tlphy.c,v 1.55 2008/04/28 20:23:53 martin 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 1.55 2008/04/28 20:23:53 martin 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(struct device *, struct cfdata *, void *); 100 static void tlphyattach(struct device *, struct device *, void *); 101 102 CFATTACH_DECL(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(struct device *parent, struct cfdata *match, 124 void *aux) 125 { 126 struct mii_attach_args *ma = aux; 127 128 if (mii_phy_match(ma, tlphys) != NULL) 129 return (10); 130 131 return (0); 132 } 133 134 static void 135 tlphyattach(struct device *parent, struct device *self, void *aux) 136 { 137 struct tlphy_softc *sc = device_private(self); 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->sc_mii.mii_inst = mii->mii_instance; 149 sc->sc_mii.mii_phy = ma->mii_phyno; 150 sc->sc_mii.mii_funcs = &tlphy_funcs; 151 sc->sc_mii.mii_pdata = mii; 152 sc->sc_mii.mii_flags = ma->mii_flags; 153 sc->sc_mii.mii_anegticks = MII_ANEGTICKS; 154 155 PHY_RESET(&sc->sc_mii); 156 157 /* 158 * Note that if we're on a device that also supports 100baseTX, 159 * we are not going to want to use the built-in 10baseT port, 160 * since there will be another PHY on the MII wired up to the 161 * UTP connector. The parent indicates this to us by specifying 162 * the TLPHY_MEDIA_NO_10_T bit. 163 */ 164 sc->sc_tlphycap = tlsc->tl_product->tp_tlphymedia; 165 if ((sc->sc_tlphycap & TLPHY_MEDIA_NO_10_T) == 0) 166 sc->sc_mii.mii_capabilities = 167 PHY_READ(&sc->sc_mii, MII_BMSR) & ma->mii_capmask; 168 else 169 sc->sc_mii.mii_capabilities = 0; 170 171 172 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 173 #define PRINT(str) aprint_normal("%s%s", sep, str); sep = ", " 174 175 aprint_normal_dev(&sc->sc_mii.mii_dev, ""); 176 if (sc->sc_tlphycap) { 177 if (sc->sc_tlphycap & TLPHY_MEDIA_10_2) { 178 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_2, 0, 179 sc->sc_mii.mii_inst), 0); 180 PRINT("10base2"); 181 } else if (sc->sc_tlphycap & TLPHY_MEDIA_10_5) { 182 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_5, 0, 183 sc->sc_mii.mii_inst), 0); 184 PRINT("10base5"); 185 } 186 } 187 if (sc->sc_mii.mii_capabilities & BMSR_MEDIAMASK) { 188 aprint_normal("%s", sep); 189 mii_phy_add_media(&sc->sc_mii); 190 } else if ((sc->sc_tlphycap & 191 (TLPHY_MEDIA_10_2 | TLPHY_MEDIA_10_5)) == 0) 192 aprint_error("no media present"); 193 aprint_normal("\n"); 194 #undef ADD 195 #undef PRINT 196 197 if (!pmf_device_register(self, NULL, mii_phy_resume)) 198 aprint_error_dev(self, "couldn't establish power handler\n"); 199 } 200 201 static int 202 tlphy_service(struct mii_softc *self, struct mii_data *mii, int cmd) 203 { 204 struct tlphy_softc *sc = (struct tlphy_softc *) self; 205 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 206 int reg; 207 208 if ((sc->sc_mii.mii_flags & MIIF_DOINGAUTO) == 0 && sc->sc_need_acomp) 209 tlphy_acomp(sc); 210 211 switch (cmd) { 212 case MII_POLLSTAT: 213 /* 214 * If we're not polling our PHY instance, just return. 215 */ 216 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) 217 return (0); 218 break; 219 220 case MII_MEDIACHG: 221 /* 222 * If the media indicates a different PHY instance, 223 * isolate ourselves. 224 */ 225 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) { 226 reg = PHY_READ(&sc->sc_mii, MII_BMCR); 227 PHY_WRITE(&sc->sc_mii, MII_BMCR, reg | BMCR_ISO); 228 return (0); 229 } 230 231 /* 232 * If the interface is not up, don't do anything. 233 */ 234 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 235 break; 236 237 switch (IFM_SUBTYPE(ife->ifm_media)) { 238 case IFM_AUTO: 239 /* 240 * The ThunderLAN PHY doesn't self-configure after 241 * an autonegotiation cycle, so there's no such 242 * thing as "already in auto mode". 243 */ 244 (void) tlphy_auto(sc, 1); 245 break; 246 case IFM_10_2: 247 case IFM_10_5: 248 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0); 249 PHY_WRITE(&sc->sc_mii, MII_TLPHY_CTRL, CTRL_AUISEL); 250 delay(100000); 251 break; 252 default: 253 PHY_WRITE(&sc->sc_mii, MII_TLPHY_CTRL, 0); 254 delay(100000); 255 mii_phy_setmedia(&sc->sc_mii); 256 } 257 break; 258 259 case MII_TICK: 260 /* 261 * If we're not currently selected, just return. 262 */ 263 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) 264 return (0); 265 266 /* 267 * Only used for autonegotiation. 268 */ 269 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 270 return (0); 271 272 /* 273 * Is the interface even up? 274 */ 275 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 276 return (0); 277 278 /* 279 * XXX WHAT ABOUT CHECKING LINK ON THE BNC/AUI?! 280 */ 281 282 if (mii_phy_tick(&sc->sc_mii) == EJUSTRETURN) 283 return (0); 284 break; 285 286 case MII_DOWN: 287 mii_phy_down(&sc->sc_mii); 288 return (0); 289 } 290 291 /* Update the media status. */ 292 mii_phy_status(&sc->sc_mii); 293 294 /* Callback if something changed. */ 295 mii_phy_update(&sc->sc_mii, cmd); 296 return (0); 297 } 298 299 static void 300 tlphy_status(struct mii_softc *physc) 301 { 302 struct tlphy_softc *sc = (void *) physc; 303 struct mii_data *mii = sc->sc_mii.mii_pdata; 304 int bmsr, bmcr, tlctrl; 305 306 mii->mii_media_status = IFM_AVALID; 307 mii->mii_media_active = IFM_ETHER; 308 309 bmcr = PHY_READ(&sc->sc_mii, MII_BMCR); 310 if (bmcr & BMCR_ISO) { 311 mii->mii_media_active |= IFM_NONE; 312 mii->mii_media_status = 0; 313 return; 314 } 315 316 tlctrl = PHY_READ(&sc->sc_mii, MII_TLPHY_CTRL); 317 if (tlctrl & CTRL_AUISEL) { 318 if (sc->sc_tlphycap & TLPHY_MEDIA_10_2) 319 mii->mii_media_active |= IFM_10_2; 320 else if (sc->sc_tlphycap & TLPHY_MEDIA_10_5) 321 mii->mii_media_active |= IFM_10_5; 322 else 323 printf("%s: AUI selected with no matching media !\n", 324 device_xname(&sc->sc_mii.mii_dev)); 325 mii->mii_media_status |= IFM_ACTIVE; 326 return; 327 } 328 329 bmsr = PHY_READ(&sc->sc_mii, MII_BMSR) | 330 PHY_READ(&sc->sc_mii, MII_BMSR); 331 if (bmsr & BMSR_LINK) 332 mii->mii_media_status |= IFM_ACTIVE; 333 334 if (bmcr & BMCR_LOOP) 335 mii->mii_media_active |= IFM_LOOP; 336 337 /* 338 * Grr, braindead ThunderLAN PHY doesn't have any way to 339 * tell which media is actually active. (Note it also 340 * doesn't self-configure after autonegotiation.) We 341 * just have to report what's in the BMCR. 342 */ 343 if (bmcr & BMCR_FDX) 344 mii->mii_media_active |= IFM_FDX; 345 mii->mii_media_active |= IFM_10_T; 346 } 347 348 static int 349 tlphy_auto(struct tlphy_softc *sc, int waitfor) 350 { 351 int error; 352 353 switch ((error = mii_phy_auto(&sc->sc_mii, waitfor))) { 354 case EIO: 355 /* 356 * Just assume we're not in full-duplex mode. 357 * XXX Check link and try AUI/BNC? 358 */ 359 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0); 360 break; 361 362 case EJUSTRETURN: 363 /* Flag that we need to program when it completes. */ 364 sc->sc_need_acomp = 1; 365 break; 366 367 default: 368 tlphy_acomp(sc); 369 } 370 371 return (error); 372 } 373 374 static void 375 tlphy_acomp(struct tlphy_softc *sc) 376 { 377 int aner, anlpar; 378 379 sc->sc_need_acomp = 0; 380 381 /* 382 * Grr, braindead ThunderLAN PHY doesn't self-configure 383 * after autonegotiation. We have to do it ourselves 384 * based on the link partner status. 385 */ 386 387 aner = PHY_READ(&sc->sc_mii, MII_ANER); 388 if (aner & ANER_LPAN) { 389 anlpar = PHY_READ(&sc->sc_mii, MII_ANLPAR) & 390 PHY_READ(&sc->sc_mii, MII_ANAR); 391 if (anlpar & ANAR_10_FD) { 392 PHY_WRITE(&sc->sc_mii, MII_BMCR, BMCR_FDX); 393 return; 394 } 395 } 396 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0); 397 } 398
Indexes created Wed Oct 15 16:09:53 GMT 2025