tlphy.c revision 1.66
1 /* $NetBSD: tlphy.c,v 1.66 2019/03/25 09:20:46 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 1.66 2019/03/25 09:20:46 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_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 sc->mii_anegticks = MII_ANEGTICKS; 147 148 PHY_RESET(sc); 149 150 /* 151 * Note that if we're on a device that also supports 100baseTX, we are 152 * not going to want to use the built-in 10baseT port, since there will 153 * be another PHY on the MII wired up to the UTP connector. The parent 154 * indicates this to us by specifying the TLPHY_MEDIA_NO_10_T bit. 155 */ 156 tsc->sc_tlphycap = tlsc->tl_product->tp_tlphymedia; 157 if ((tsc->sc_tlphycap & TLPHY_MEDIA_NO_10_T) == 0) { 158 PHY_READ(sc, MII_BMSR, &sc->mii_capabilities); 159 sc->mii_capabilities &= ma->mii_capmask; 160 } else 161 sc->mii_capabilities = 0; 162 163 164 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 165 #define PRINT(str) aprint_normal("%s%s", sep, str); sep = ", " 166 167 aprint_normal_dev(self, ""); 168 if (tsc->sc_tlphycap) { 169 if (tsc->sc_tlphycap & TLPHY_MEDIA_10_2) { 170 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_2, 0, sc->mii_inst), 171 0); 172 PRINT("10base2"); 173 } else if (tsc->sc_tlphycap & TLPHY_MEDIA_10_5) { 174 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_5, 0, sc->mii_inst), 175 0); 176 PRINT("10base5"); 177 } 178 } 179 if (sc->mii_capabilities & BMSR_MEDIAMASK) { 180 aprint_normal("%s", sep); 181 mii_phy_add_media(sc); 182 } else { 183 if ((tsc->sc_tlphycap & 184 (TLPHY_MEDIA_10_2 | TLPHY_MEDIA_10_5)) == 0) 185 aprint_error("no media present"); 186 /* 187 * mii_phy_add_media() automatically install power handler, 188 * but if_media_add() doesn't. Do it now. 189 */ 190 if (!pmf_device_register(self, NULL, mii_phy_resume)) { 191 aprint_normal("\n"); 192 aprint_error_dev(self, 193 "couldn't establish power handler"); 194 } 195 } 196 aprint_normal("\n"); 197 #undef ADD 198 #undef PRINT 199 } 200 201 static int 202 tlphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 203 { 204 struct tlphy_softc *tsc = (struct tlphy_softc *)sc; 205 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 206 uint16_t reg; 207 208 if ((sc->mii_flags & MIIF_DOINGAUTO) == 0 && tsc->sc_need_acomp) 209 tlphy_acomp(tsc); 210 211 switch (cmd) { 212 case MII_POLLSTAT: 213 /* If we're not polling our PHY instance, just return. */ 214 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 215 return 0; 216 break; 217 218 case MII_MEDIACHG: 219 /* 220 * If the media indicates a different PHY instance, 221 * isolate ourselves. 222 */ 223 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 224 PHY_READ(sc, MII_BMCR, ®); 225 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 226 return 0; 227 } 228 229 /* If the interface is not up, don't do anything. */ 230 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 231 break; 232 233 switch (IFM_SUBTYPE(ife->ifm_media)) { 234 case IFM_AUTO: 235 /* 236 * The ThunderLAN PHY doesn't self-configure after 237 * an autonegotiation cycle, so there's no such 238 * thing as "already in auto mode". 239 */ 240 (void) tlphy_auto(tsc, 1); 241 break; 242 case IFM_10_2: 243 case IFM_10_5: 244 PHY_WRITE(sc, MII_BMCR, 0); 245 PHY_WRITE(sc, MII_TLPHY_CTRL, CTRL_AUISEL); 246 delay(100000); 247 break; 248 default: 249 PHY_WRITE(sc, MII_TLPHY_CTRL, 0); 250 delay(100000); 251 mii_phy_setmedia(sc); 252 } 253 break; 254 255 case MII_TICK: 256 /* If we're not currently selected, just return. */ 257 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 258 return 0; 259 260 /* 261 * XXX WHAT ABOUT CHECKING LINK ON THE BNC/AUI?! 262 */ 263 264 if (mii_phy_tick(sc) == EJUSTRETURN) 265 return 0; 266 break; 267 268 case MII_DOWN: 269 mii_phy_down(sc); 270 return 0; 271 } 272 273 /* Update the media status. */ 274 mii_phy_status(sc); 275 276 /* Callback if something changed. */ 277 mii_phy_update(sc, cmd); 278 return 0; 279 } 280 281 static void 282 tlphy_status(struct mii_softc *sc) 283 { 284 struct tlphy_softc *tsc = (struct tlphy_softc *)sc; 285 struct mii_data *mii = sc->mii_pdata; 286 uint16_t bmsr, bmcr, tlctrl; 287 288 mii->mii_media_status = IFM_AVALID; 289 mii->mii_media_active = IFM_ETHER; 290 291 PHY_READ(sc, MII_BMCR, &bmcr); 292 if (bmcr & BMCR_ISO) { 293 mii->mii_media_active |= IFM_NONE; 294 mii->mii_media_status = 0; 295 return; 296 } 297 298 PHY_READ(sc, MII_TLPHY_CTRL, &tlctrl); 299 if (tlctrl & CTRL_AUISEL) { 300 if (tsc->sc_tlphycap & TLPHY_MEDIA_10_2) 301 mii->mii_media_active |= IFM_10_2; 302 else if (tsc->sc_tlphycap & TLPHY_MEDIA_10_5) 303 mii->mii_media_active |= IFM_10_5; 304 else 305 printf("%s: AUI selected with no matching media !\n", 306 device_xname(sc->mii_dev)); 307 mii->mii_media_status |= IFM_ACTIVE; 308 return; 309 } 310 311 PHY_READ(sc, MII_BMSR, &bmsr); 312 PHY_READ(sc, MII_BMSR, &bmsr); 313 if (bmsr & BMSR_LINK) 314 mii->mii_media_status |= IFM_ACTIVE; 315 316 if (bmcr & BMCR_LOOP) 317 mii->mii_media_active |= IFM_LOOP; 318 319 /* 320 * Grr, braindead ThunderLAN PHY doesn't have any way to tell which 321 * media is actually active. (Note it also doesn't self-configure 322 * after autonegotiation.) We just have to report what's in the BMCR. 323 */ 324 if (bmcr & BMCR_FDX) 325 mii->mii_media_active |= IFM_FDX; 326 else 327 mii->mii_media_active |= IFM_HDX; 328 mii->mii_media_active |= IFM_10_T; 329 } 330 331 static int 332 tlphy_auto(struct tlphy_softc *tsc, int waitfor) 333 { 334 struct mii_softc *sc = &tsc->sc_mii; 335 int error; 336 337 switch ((error = mii_phy_auto(sc, waitfor))) { 338 case EIO: 339 /* 340 * Just assume we're not in full-duplex mode. 341 * XXX Check link and try AUI/BNC? 342 */ 343 PHY_WRITE(sc, MII_BMCR, 0); 344 break; 345 346 case EJUSTRETURN: 347 /* Flag that we need to program when it completes. */ 348 tsc->sc_need_acomp = 1; 349 break; 350 351 default: 352 tlphy_acomp(tsc); 353 } 354 355 return error; 356 } 357 358 static void 359 tlphy_acomp(struct tlphy_softc *tsc) 360 { 361 struct mii_softc *sc = &tsc->sc_mii; 362 uint16_t aner, anar, anlpar, result; 363 364 tsc->sc_need_acomp = 0; 365 366 /* 367 * Grr, braindead ThunderLAN PHY doesn't self-configure 368 * after autonegotiation. We have to do it ourselves 369 * based on the link partner status. 370 */ 371 372 PHY_READ(sc, MII_ANER, &aner); 373 if (aner & ANER_LPAN) { 374 PHY_READ(sc, MII_ANAR, &anar); 375 PHY_READ(sc, MII_ANLPAR, &anlpar); 376 result = anar & anlpar; 377 if (result & ANAR_10_FD) { 378 PHY_WRITE(sc, MII_BMCR, BMCR_FDX); 379 return; 380 } 381 } 382 PHY_WRITE(sc, MII_BMCR, 0); 383 } 384
Indexes created Thu Sep 25 16:09:42 GMT 2025