tlphy.c revision 1.67
1 /* $NetBSD: tlphy.c,v 1.67 2019/11/27 10:19:21 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 1.67 2019/11/27 10:19:21 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; 146 147 PHY_RESET(sc); 148 149 /* 150 * Note that if we're on a device that also supports 100baseTX, we are 151 * not going to want to use the built-in 10baseT port, since there will 152 * be another PHY on the MII wired up to the UTP connector. The parent 153 * indicates this to us by specifying the TLPHY_MEDIA_NO_10_T bit. 154 */ 155 tsc->sc_tlphycap = tlsc->tl_product->tp_tlphymedia; 156 if ((tsc->sc_tlphycap & TLPHY_MEDIA_NO_10_T) == 0) { 157 PHY_READ(sc, MII_BMSR, &sc->mii_capabilities); 158 sc->mii_capabilities &= ma->mii_capmask; 159 } else 160 sc->mii_capabilities = 0; 161 162 163 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 164 #define PRINT(str) aprint_normal("%s%s", sep, str); sep = ", " 165 166 if (tsc->sc_tlphycap) { 167 sc->mii_anegticks = MII_ANEGTICKS; 168 aprint_normal_dev(self, ""); 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 aprint_normal("\n"); 179 } 180 if (sc->mii_capabilities & BMSR_MEDIAMASK) 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_dev(self, "no media present\n"); 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_error_dev(self, 192 "couldn't establish power handler\n"); 193 } 194 } 195 #undef ADD 196 #undef PRINT 197 } 198 199 static int 200 tlphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 201 { 202 struct tlphy_softc *tsc = (struct tlphy_softc *)sc; 203 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 204 uint16_t reg; 205 206 if ((sc->mii_flags & MIIF_DOINGAUTO) == 0 && tsc->sc_need_acomp) 207 tlphy_acomp(tsc); 208 209 switch (cmd) { 210 case MII_POLLSTAT: 211 /* If we're not polling our PHY instance, just return. */ 212 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 213 return 0; 214 break; 215 216 case MII_MEDIACHG: 217 /* 218 * If the media indicates a different PHY instance, 219 * isolate ourselves. 220 */ 221 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 222 PHY_READ(sc, MII_BMCR, ®); 223 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 224 return 0; 225 } 226 227 /* If the interface is not up, don't do anything. */ 228 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 229 break; 230 231 switch (IFM_SUBTYPE(ife->ifm_media)) { 232 case IFM_AUTO: 233 /* 234 * The ThunderLAN PHY doesn't self-configure after 235 * an autonegotiation cycle, so there's no such 236 * thing as "already in auto mode". 237 */ 238 (void) tlphy_auto(tsc, 1); 239 break; 240 case IFM_10_2: 241 case IFM_10_5: 242 PHY_WRITE(sc, MII_BMCR, 0); 243 PHY_WRITE(sc, MII_TLPHY_CTRL, CTRL_AUISEL); 244 delay(100000); 245 break; 246 default: 247 PHY_WRITE(sc, MII_TLPHY_CTRL, 0); 248 delay(100000); 249 mii_phy_setmedia(sc); 250 } 251 break; 252 253 case MII_TICK: 254 /* If we're not currently selected, just return. */ 255 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 256 return 0; 257 258 /* 259 * XXX WHAT ABOUT CHECKING LINK ON THE BNC/AUI?! 260 */ 261 262 if (mii_phy_tick(sc) == EJUSTRETURN) 263 return 0; 264 break; 265 266 case MII_DOWN: 267 mii_phy_down(sc); 268 return 0; 269 } 270 271 /* Update the media status. */ 272 mii_phy_status(sc); 273 274 /* Callback if something changed. */ 275 mii_phy_update(sc, cmd); 276 return 0; 277 } 278 279 static void 280 tlphy_status(struct mii_softc *sc) 281 { 282 struct tlphy_softc *tsc = (struct tlphy_softc *)sc; 283 struct mii_data *mii = sc->mii_pdata; 284 uint16_t bmsr, bmcr, tlctrl; 285 286 mii->mii_media_status = IFM_AVALID; 287 mii->mii_media_active = IFM_ETHER; 288 289 PHY_READ(sc, MII_BMCR, &bmcr); 290 if (bmcr & BMCR_ISO) { 291 mii->mii_media_active |= IFM_NONE; 292 mii->mii_media_status = 0; 293 return; 294 } 295 296 PHY_READ(sc, MII_TLPHY_CTRL, &tlctrl); 297 if (tlctrl & CTRL_AUISEL) { 298 if (tsc->sc_tlphycap & TLPHY_MEDIA_10_2) 299 mii->mii_media_active |= IFM_10_2; 300 else if (tsc->sc_tlphycap & TLPHY_MEDIA_10_5) 301 mii->mii_media_active |= IFM_10_5; 302 else 303 printf("%s: AUI selected with no matching media !\n", 304 device_xname(sc->mii_dev)); 305 mii->mii_media_status |= IFM_ACTIVE; 306 return; 307 } 308 309 PHY_READ(sc, MII_BMSR, &bmsr); 310 PHY_READ(sc, MII_BMSR, &bmsr); 311 if (bmsr & BMSR_LINK) 312 mii->mii_media_status |= IFM_ACTIVE; 313 314 if (bmcr & BMCR_LOOP) 315 mii->mii_media_active |= IFM_LOOP; 316 317 /* 318 * Grr, braindead ThunderLAN PHY doesn't have any way to tell which 319 * media is actually active. (Note it also doesn't self-configure 320 * after autonegotiation.) We just have to report what's in the BMCR. 321 */ 322 if (bmcr & BMCR_FDX) 323 mii->mii_media_active |= IFM_FDX; 324 else 325 mii->mii_media_active |= IFM_HDX; 326 mii->mii_media_active |= IFM_10_T; 327 } 328 329 static int 330 tlphy_auto(struct tlphy_softc *tsc, int waitfor) 331 { 332 struct mii_softc *sc = &tsc->sc_mii; 333 int error; 334 335 switch ((error = mii_phy_auto(sc, waitfor))) { 336 case EIO: 337 /* 338 * Just assume we're not in full-duplex mode. 339 * XXX Check link and try AUI/BNC? 340 */ 341 PHY_WRITE(sc, MII_BMCR, 0); 342 break; 343 344 case EJUSTRETURN: 345 /* Flag that we need to program when it completes. */ 346 tsc->sc_need_acomp = 1; 347 break; 348 349 default: 350 tlphy_acomp(tsc); 351 } 352 353 return error; 354 } 355 356 static void 357 tlphy_acomp(struct tlphy_softc *tsc) 358 { 359 struct mii_softc *sc = &tsc->sc_mii; 360 uint16_t aner, anar, anlpar, result; 361 362 tsc->sc_need_acomp = 0; 363 364 /* 365 * Grr, braindead ThunderLAN PHY doesn't self-configure 366 * after autonegotiation. We have to do it ourselves 367 * based on the link partner status. 368 */ 369 370 PHY_READ(sc, MII_ANER, &aner); 371 if (aner & ANER_LPAN) { 372 PHY_READ(sc, MII_ANAR, &anar); 373 PHY_READ(sc, MII_ANLPAR, &anlpar); 374 result = anar & anlpar; 375 if (result & ANAR_10_FD) { 376 PHY_WRITE(sc, MII_BMCR, BMCR_FDX); 377 return; 378 } 379 } 380 PHY_WRITE(sc, MII_BMCR, 0); 381 } 382
Indexes created Tue Sep 23 01:09:51 GMT 2025