tlphy.c revision 1.68
1 /* $NetBSD: tlphy.c,v 1.68 2020/03/15 23:04:50 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 * 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 * 45 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 46 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 47 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 48 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 49 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 50 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 51 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 52 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 53 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 54 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 55 */ 56 57 /* 58 * Driver for Texas Instruments's ThunderLAN PHYs 59 */ 60 61 #include <sys/cdefs.h> 62 __KERNEL_RCSID(0, "$NetBSD: tlphy.c,v 1.68 2020/03/15 23:04:50 thorpej Exp $"); 63 64 #include <sys/param.h> 65 #include <sys/systm.h> 66 #include <sys/kernel.h> 67 #include <sys/device.h> 68 #include <sys/socket.h> 69 #include <sys/errno.h> 70 71 #include <sys/bus.h> 72 73 #include <net/if.h> 74 #include <net/if_media.h> 75 76 #include <net/if_ether.h> 77 78 #include <dev/mii/mii.h> 79 #include <dev/mii/miivar.h> 80 #include <dev/mii/miidevs.h> 81 82 #include <dev/mii/tlphyreg.h> 83 #include <dev/mii/tlphyvar.h> 84 85 /* ThunderLAN PHY can only be on a ThunderLAN */ 86 #include <dev/pci/if_tlvar.h> 87 88 struct tlphy_softc { 89 struct mii_softc sc_mii; /* generic PHY */ 90 int sc_tlphycap; 91 int sc_need_acomp; 92 }; 93 94 static int tlphymatch(device_t, cfdata_t, void *); 95 static void tlphyattach(device_t, device_t, void *); 96 97 CFATTACH_DECL_NEW(tlphy, sizeof(struct tlphy_softc), 98 tlphymatch, tlphyattach, mii_phy_detach, mii_phy_activate); 99 100 static int tlphy_service(struct mii_softc *, struct mii_data *, int); 101 static int tlphy_auto(struct tlphy_softc *, int); 102 static void tlphy_acomp(struct tlphy_softc *); 103 static void tlphy_status(struct mii_softc *); 104 105 static const struct mii_phy_funcs tlphy_funcs = { 106 tlphy_service, tlphy_status, mii_phy_reset, 107 }; 108 109 static const struct mii_phydesc tlphys[] = { 110 MII_PHY_DESC(TI, TLAN10T), 111 MII_PHY_END, 112 }; 113 114 static int 115 tlphymatch(device_t parent, cfdata_t match, void *aux) 116 { 117 struct mii_attach_args *ma = aux; 118 119 if (mii_phy_match(ma, tlphys) != NULL) 120 return 10; 121 122 return 0; 123 } 124 125 static void 126 tlphyattach(device_t parent, device_t self, void *aux) 127 { 128 struct tlphy_softc *tsc = device_private(self); 129 struct mii_softc *sc = &tsc->sc_mii; 130 struct tl_softc *tlsc = device_private(device_parent(self)); 131 struct mii_attach_args *ma = aux; 132 struct mii_data *mii = ma->mii_data; 133 const struct mii_phydesc *mpd; 134 const char *sep = ""; 135 136 mpd = mii_phy_match(ma, tlphys); 137 aprint_naive(": Media interface\n"); 138 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 139 140 sc->mii_dev = self; 141 sc->mii_inst = mii->mii_instance; 142 sc->mii_phy = ma->mii_phyno; 143 sc->mii_funcs = &tlphy_funcs; 144 sc->mii_pdata = mii; 145 sc->mii_flags = ma->mii_flags; 146 147 mii_lock(mii); 148 149 PHY_RESET(sc); 150 151 /* 152 * Note that if we're on a device that also supports 100baseTX, we are 153 * not going to want to use the built-in 10baseT port, since there will 154 * be another PHY on the MII wired up to the UTP connector. The parent 155 * indicates this to us by specifying the TLPHY_MEDIA_NO_10_T bit. 156 */ 157 tsc->sc_tlphycap = tlsc->tl_product->tp_tlphymedia; 158 if ((tsc->sc_tlphycap & TLPHY_MEDIA_NO_10_T) == 0) { 159 PHY_READ(sc, MII_BMSR, &sc->mii_capabilities); 160 sc->mii_capabilities &= ma->mii_capmask; 161 } else 162 sc->mii_capabilities = 0; 163 164 mii_unlock(mii); 165 166 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 167 #define PRINT(str) aprint_normal("%s%s", sep, str); sep = ", " 168 169 if (tsc->sc_tlphycap) { 170 mii_lock(mii); 171 sc->mii_anegticks = MII_ANEGTICKS; 172 mii_unlock(mii); 173 aprint_normal_dev(self, ""); 174 if (tsc->sc_tlphycap & TLPHY_MEDIA_10_2) { 175 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_2, 0, sc->mii_inst), 176 0); 177 PRINT("10base2"); 178 } else if (tsc->sc_tlphycap & TLPHY_MEDIA_10_5) { 179 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_5, 0, sc->mii_inst), 180 0); 181 PRINT("10base5"); 182 } 183 aprint_normal("\n"); 184 } 185 if (sc->mii_capabilities & BMSR_MEDIAMASK) 186 mii_phy_add_media(sc); 187 else { 188 if ((tsc->sc_tlphycap & 189 (TLPHY_MEDIA_10_2 | TLPHY_MEDIA_10_5)) == 0) 190 aprint_error_dev(self, "no media present\n"); 191 /* 192 * mii_phy_add_media() automatically install power handler, 193 * but if_media_add() doesn't. Do it now. 194 */ 195 if (!pmf_device_register(self, NULL, mii_phy_resume)) { 196 aprint_error_dev(self, 197 "couldn't establish power handler\n"); 198 } 199 } 200 #undef ADD 201 #undef PRINT 202 } 203 204 static int 205 tlphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 206 { 207 struct tlphy_softc *tsc = (struct tlphy_softc *)sc; 208 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 209 uint16_t reg; 210 211 KASSERT(mii_locked(mii)); 212 213 if ((sc->mii_flags & MIIF_DOINGAUTO) == 0 && tsc->sc_need_acomp) 214 tlphy_acomp(tsc); 215 216 switch (cmd) { 217 case MII_POLLSTAT: 218 /* If we're not polling our PHY instance, just return. */ 219 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 220 return 0; 221 break; 222 223 case MII_MEDIACHG: 224 /* 225 * If the media indicates a different PHY instance, 226 * isolate ourselves. 227 */ 228 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 229 PHY_READ(sc, MII_BMCR, ®); 230 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 231 return 0; 232 } 233 234 /* If the interface is not up, don't do anything. */ 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 /* If we're not currently selected, just return. */ 262 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 263 return 0; 264 265 /* 266 * XXX WHAT ABOUT CHECKING LINK ON THE BNC/AUI?! 267 */ 268 269 if (mii_phy_tick(sc) == EJUSTRETURN) 270 return 0; 271 break; 272 273 case MII_DOWN: 274 mii_phy_down(sc); 275 return 0; 276 } 277 278 /* Update the media status. */ 279 mii_phy_status(sc); 280 281 /* Callback if something changed. */ 282 mii_phy_update(sc, cmd); 283 return 0; 284 } 285 286 static void 287 tlphy_status(struct mii_softc *sc) 288 { 289 struct tlphy_softc *tsc = (struct tlphy_softc *)sc; 290 struct mii_data *mii = sc->mii_pdata; 291 uint16_t bmsr, bmcr, tlctrl; 292 293 KASSERT(mii_locked(mii)); 294 295 mii->mii_media_status = IFM_AVALID; 296 mii->mii_media_active = IFM_ETHER; 297 298 PHY_READ(sc, MII_BMCR, &bmcr); 299 if (bmcr & BMCR_ISO) { 300 mii->mii_media_active |= IFM_NONE; 301 mii->mii_media_status = 0; 302 return; 303 } 304 305 PHY_READ(sc, MII_TLPHY_CTRL, &tlctrl); 306 if (tlctrl & CTRL_AUISEL) { 307 if (tsc->sc_tlphycap & TLPHY_MEDIA_10_2) 308 mii->mii_media_active |= IFM_10_2; 309 else if (tsc->sc_tlphycap & TLPHY_MEDIA_10_5) 310 mii->mii_media_active |= IFM_10_5; 311 else 312 printf("%s: AUI selected with no matching media !\n", 313 device_xname(sc->mii_dev)); 314 mii->mii_media_status |= IFM_ACTIVE; 315 return; 316 } 317 318 PHY_READ(sc, MII_BMSR, &bmsr); 319 PHY_READ(sc, MII_BMSR, &bmsr); 320 if (bmsr & BMSR_LINK) 321 mii->mii_media_status |= IFM_ACTIVE; 322 323 if (bmcr & BMCR_LOOP) 324 mii->mii_media_active |= IFM_LOOP; 325 326 /* 327 * Grr, braindead ThunderLAN PHY doesn't have any way to tell which 328 * media is actually active. (Note it also doesn't self-configure 329 * after autonegotiation.) We just have to report what's in the BMCR. 330 */ 331 if (bmcr & BMCR_FDX) 332 mii->mii_media_active |= IFM_FDX; 333 else 334 mii->mii_media_active |= IFM_HDX; 335 mii->mii_media_active |= IFM_10_T; 336 } 337 338 static int 339 tlphy_auto(struct tlphy_softc *tsc, int waitfor) 340 { 341 struct mii_softc *sc = &tsc->sc_mii; 342 int error; 343 344 switch ((error = mii_phy_auto(sc, waitfor))) { 345 case EIO: 346 /* 347 * Just assume we're not in full-duplex mode. 348 * XXX Check link and try AUI/BNC? 349 */ 350 PHY_WRITE(sc, MII_BMCR, 0); 351 break; 352 353 case EJUSTRETURN: 354 /* Flag that we need to program when it completes. */ 355 tsc->sc_need_acomp = 1; 356 break; 357 358 default: 359 tlphy_acomp(tsc); 360 } 361 362 return error; 363 } 364 365 static void 366 tlphy_acomp(struct tlphy_softc *tsc) 367 { 368 struct mii_softc *sc = &tsc->sc_mii; 369 uint16_t aner, anar, anlpar, result; 370 371 tsc->sc_need_acomp = 0; 372 373 /* 374 * Grr, braindead ThunderLAN PHY doesn't self-configure 375 * after autonegotiation. We have to do it ourselves 376 * based on the link partner status. 377 */ 378 379 PHY_READ(sc, MII_ANER, &aner); 380 if (aner & ANER_LPAN) { 381 PHY_READ(sc, MII_ANAR, &anar); 382 PHY_READ(sc, MII_ANLPAR, &anlpar); 383 result = anar & anlpar; 384 if (result & ANAR_10_FD) { 385 PHY_WRITE(sc, MII_BMCR, BMCR_FDX); 386 return; 387 } 388 } 389 PHY_WRITE(sc, MII_BMCR, 0); 390 } 391
Indexes created Wed Sep 24 05:09:52 GMT 2025