1 /* $NetBSD: tlphy.c,v 1.62 2014/06/16 16:48:16 msaitoh 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 1.62 2014/06/16 16:48:16 msaitoh 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_OUI_TI, MII_MODEL_TI_TLAN10T, 111 MII_STR_TI_TLAN10T }, 112 113 { 0, 0, 114 NULL }, 115 }; 116 117 static int 118 tlphymatch(device_t parent, cfdata_t match, void *aux) 119 { 120 struct mii_attach_args *ma = aux; 121 122 if (mii_phy_match(ma, tlphys) != NULL) 123 return (10); 124 125 return (0); 126 } 127 128 static void 129 tlphyattach(device_t parent, device_t self, void *aux) 130 { 131 struct tlphy_softc *tsc = device_private(self); 132 struct mii_softc *sc = &tsc->sc_mii; 133 struct tl_softc *tlsc = device_private(device_parent(self)); 134 struct mii_attach_args *ma = aux; 135 struct mii_data *mii = ma->mii_data; 136 const struct mii_phydesc *mpd; 137 const char *sep = ""; 138 139 mpd = mii_phy_match(ma, tlphys); 140 aprint_naive(": Media interface\n"); 141 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 142 143 sc->mii_dev = self; 144 sc->mii_inst = mii->mii_instance; 145 sc->mii_phy = ma->mii_phyno; 146 sc->mii_funcs = &tlphy_funcs; 147 sc->mii_pdata = mii; 148 sc->mii_flags = ma->mii_flags; 149 sc->mii_anegticks = MII_ANEGTICKS; 150 151 PHY_RESET(sc); 152 153 /* 154 * Note that if we're on a device that also supports 100baseTX, 155 * we are not going to want to use the built-in 10baseT port, 156 * since there will be another PHY on the MII wired up to the 157 * UTP connector. The parent indicates this to us by specifying 158 * the TLPHY_MEDIA_NO_10_T bit. 159 */ 160 tsc->sc_tlphycap = tlsc->tl_product->tp_tlphymedia; 161 if ((tsc->sc_tlphycap & TLPHY_MEDIA_NO_10_T) == 0) 162 sc->mii_capabilities = 163 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 164 else 165 sc->mii_capabilities = 0; 166 167 168 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 169 #define PRINT(str) aprint_normal("%s%s", sep, str); sep = ", " 170 171 aprint_normal_dev(self, ""); 172 if (tsc->sc_tlphycap) { 173 if (tsc->sc_tlphycap & TLPHY_MEDIA_10_2) { 174 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_2, 0, 175 sc->mii_inst), 0); 176 PRINT("10base2"); 177 } else if (tsc->sc_tlphycap & TLPHY_MEDIA_10_5) { 178 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_5, 0, 179 sc->mii_inst), 0); 180 PRINT("10base5"); 181 } 182 } 183 if (sc->mii_capabilities & BMSR_MEDIAMASK) { 184 aprint_normal("%s", sep); 185 mii_phy_add_media(sc); 186 } else if ((tsc->sc_tlphycap & 187 (TLPHY_MEDIA_10_2 | TLPHY_MEDIA_10_5)) == 0) 188 aprint_error("no media present"); 189 else if (!pmf_device_register(self, NULL, mii_phy_resume)) { 190 aprint_normal("\n"); 191 aprint_error_dev(self, "couldn't establish power handler"); 192 } 193 aprint_normal("\n"); 194 #undef ADD 195 #undef PRINT 196 } 197 198 static int 199 tlphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 200 { 201 struct tlphy_softc *tsc = (struct tlphy_softc *)sc; 202 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 203 int reg; 204 205 if ((sc->mii_flags & MIIF_DOINGAUTO) == 0 && tsc->sc_need_acomp) 206 tlphy_acomp(tsc); 207 208 switch (cmd) { 209 case MII_POLLSTAT: 210 /* 211 * If we're not polling our PHY instance, just return. 212 */ 213 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 214 return (0); 215 break; 216 217 case MII_MEDIACHG: 218 /* 219 * If the media indicates a different PHY instance, 220 * isolate ourselves. 221 */ 222 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 223 reg = PHY_READ(sc, MII_BMCR); 224 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 225 return (0); 226 } 227 228 /* 229 * If the interface is not up, don't do anything. 230 */ 231 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 232 break; 233 234 switch (IFM_SUBTYPE(ife->ifm_media)) { 235 case IFM_AUTO: 236 /* 237 * The ThunderLAN PHY doesn't self-configure after 238 * an autonegotiation cycle, so there's no such 239 * thing as "already in auto mode". 240 */ 241 (void) tlphy_auto(tsc, 1); 242 break; 243 case IFM_10_2: 244 case IFM_10_5: 245 PHY_WRITE(sc, MII_BMCR, 0); 246 PHY_WRITE(sc, MII_TLPHY_CTRL, CTRL_AUISEL); 247 delay(100000); 248 break; 249 default: 250 PHY_WRITE(sc, MII_TLPHY_CTRL, 0); 251 delay(100000); 252 mii_phy_setmedia(sc); 253 } 254 break; 255 256 case MII_TICK: 257 /* 258 * If we're not currently selected, just return. 259 */ 260 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 261 return (0); 262 263 /* 264 * XXX WHAT ABOUT CHECKING LINK ON THE BNC/AUI?! 265 */ 266 267 if (mii_phy_tick(sc) == EJUSTRETURN) 268 return (0); 269 break; 270 271 case MII_DOWN: 272 mii_phy_down(sc); 273 return (0); 274 } 275 276 /* Update the media status. */ 277 mii_phy_status(sc); 278 279 /* Callback if something changed. */ 280 mii_phy_update(sc, cmd); 281 return (0); 282 } 283 284 static void 285 tlphy_status(struct mii_softc *sc) 286 { 287 struct tlphy_softc *tsc = (struct tlphy_softc *)sc; 288 struct mii_data *mii = sc->mii_pdata; 289 int bmsr, bmcr, tlctrl; 290 291 mii->mii_media_status = IFM_AVALID; 292 mii->mii_media_active = IFM_ETHER; 293 294 bmcr = PHY_READ(sc, MII_BMCR); 295 if (bmcr & BMCR_ISO) { 296 mii->mii_media_active |= IFM_NONE; 297 mii->mii_media_status = 0; 298 return; 299 } 300 301 tlctrl = PHY_READ(sc, MII_TLPHY_CTRL); 302 if (tlctrl & CTRL_AUISEL) { 303 if (tsc->sc_tlphycap & TLPHY_MEDIA_10_2) 304 mii->mii_media_active |= IFM_10_2; 305 else if (tsc->sc_tlphycap & TLPHY_MEDIA_10_5) 306 mii->mii_media_active |= IFM_10_5; 307 else 308 printf("%s: AUI selected with no matching media !\n", 309 device_xname(sc->mii_dev)); 310 mii->mii_media_status |= IFM_ACTIVE; 311 return; 312 } 313 314 bmsr = PHY_READ(sc, MII_BMSR) | 315 PHY_READ(sc, MII_BMSR); 316 if (bmsr & BMSR_LINK) 317 mii->mii_media_status |= IFM_ACTIVE; 318 319 if (bmcr & BMCR_LOOP) 320 mii->mii_media_active |= IFM_LOOP; 321 322 /* 323 * Grr, braindead ThunderLAN PHY doesn't have any way to 324 * tell which media is actually active. (Note it also 325 * doesn't self-configure after autonegotiation.) We 326 * just have to report what's in the BMCR. 327 */ 328 if (bmcr & BMCR_FDX) 329 mii->mii_media_active |= IFM_FDX; 330 else 331 mii->mii_media_active |= IFM_HDX; 332 mii->mii_media_active |= IFM_10_T; 333 } 334 335 static int 336 tlphy_auto(struct tlphy_softc *tsc, int waitfor) 337 { 338 struct mii_softc *sc = &tsc->sc_mii; 339 int error; 340 341 switch ((error = mii_phy_auto(sc, waitfor))) { 342 case EIO: 343 /* 344 * Just assume we're not in full-duplex mode. 345 * XXX Check link and try AUI/BNC? 346 */ 347 PHY_WRITE(sc, MII_BMCR, 0); 348 break; 349 350 case EJUSTRETURN: 351 /* Flag that we need to program when it completes. */ 352 tsc->sc_need_acomp = 1; 353 break; 354 355 default: 356 tlphy_acomp(tsc); 357 } 358 359 return (error); 360 } 361 362 static void 363 tlphy_acomp(struct tlphy_softc *tsc) 364 { 365 struct mii_softc *sc = &tsc->sc_mii; 366 int aner, anlpar; 367 368 tsc->sc_need_acomp = 0; 369 370 /* 371 * Grr, braindead ThunderLAN PHY doesn't self-configure 372 * after autonegotiation. We have to do it ourselves 373 * based on the link partner status. 374 */ 375 376 aner = PHY_READ(sc, MII_ANER); 377 if (aner & ANER_LPAN) { 378 anlpar = PHY_READ(sc, MII_ANLPAR) & 379 PHY_READ(sc, MII_ANAR); 380 if (anlpar & ANAR_10_FD) { 381 PHY_WRITE(sc, MII_BMCR, BMCR_FDX); 382 return; 383 } 384 } 385 PHY_WRITE(sc, MII_BMCR, 0); 386 } 387