tlphy.c revision 1.64
1 /* $NetBSD: tlphy.c,v 1.64 2019/02/24 17:22:21 christos 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 1.64 2019/02/24 17:22:21 christos 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, 152 * we are not going to want to use the built-in 10baseT port, 153 * since there will be another PHY on the MII wired up to the 154 * UTP connector. The parent indicates this to us by specifying 155 * 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; 163 164 165 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 166 #define PRINT(str) aprint_normal("%s%s", sep, str); sep = ", " 167 168 aprint_normal_dev(self, ""); 169 if (tsc->sc_tlphycap) { 170 if (tsc->sc_tlphycap & TLPHY_MEDIA_10_2) { 171 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_2, 0, 172 sc->mii_inst), 0); 173 PRINT("10base2"); 174 } else if (tsc->sc_tlphycap & TLPHY_MEDIA_10_5) { 175 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_5, 0, 176 sc->mii_inst), 0); 177 PRINT("10base5"); 178 } 179 } 180 if (sc->mii_capabilities & BMSR_MEDIAMASK) { 181 aprint_normal("%s", sep); 182 mii_phy_add_media(sc); 183 } else if ((tsc->sc_tlphycap & 184 (TLPHY_MEDIA_10_2 | TLPHY_MEDIA_10_5)) == 0) 185 aprint_error("no media present"); 186 else if (!pmf_device_register(self, NULL, mii_phy_resume)) { 187 aprint_normal("\n"); 188 aprint_error_dev(self, "couldn't establish power handler"); 189 } 190 aprint_normal("\n"); 191 #undef ADD 192 #undef PRINT 193 } 194 195 static int 196 tlphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 197 { 198 struct tlphy_softc *tsc = (struct tlphy_softc *)sc; 199 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 200 uint16_t reg; 201 202 if ((sc->mii_flags & MIIF_DOINGAUTO) == 0 && tsc->sc_need_acomp) 203 tlphy_acomp(tsc); 204 205 switch (cmd) { 206 case MII_POLLSTAT: 207 /* 208 * If we're not polling our PHY instance, just return. 209 */ 210 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 211 return (0); 212 break; 213 214 case MII_MEDIACHG: 215 /* 216 * If the media indicates a different PHY instance, 217 * isolate ourselves. 218 */ 219 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 220 PHY_READ(sc, MII_BMCR, ®); 221 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 222 return (0); 223 } 224 225 /* 226 * If the interface is not up, don't do anything. 227 */ 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 /* 255 * If we're not currently selected, just return. 256 */ 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 321 * tell which media is actually active. (Note it also 322 * doesn't self-configure after autonegotiation.) We 323 * just have to report what's in the BMCR. 324 */ 325 if (bmcr & BMCR_FDX) 326 mii->mii_media_active |= IFM_FDX; 327 else 328 mii->mii_media_active |= IFM_HDX; 329 mii->mii_media_active |= IFM_10_T; 330 } 331 332 static int 333 tlphy_auto(struct tlphy_softc *tsc, int waitfor) 334 { 335 struct mii_softc *sc = &tsc->sc_mii; 336 int error; 337 338 switch ((error = mii_phy_auto(sc, waitfor))) { 339 case EIO: 340 /* 341 * Just assume we're not in full-duplex mode. 342 * XXX Check link and try AUI/BNC? 343 */ 344 PHY_WRITE(sc, MII_BMCR, 0); 345 break; 346 347 case EJUSTRETURN: 348 /* Flag that we need to program when it completes. */ 349 tsc->sc_need_acomp = 1; 350 break; 351 352 default: 353 tlphy_acomp(tsc); 354 } 355 356 return (error); 357 } 358 359 static void 360 tlphy_acomp(struct tlphy_softc *tsc) 361 { 362 struct mii_softc *sc = &tsc->sc_mii; 363 uint16_t aner, anar, anlpar, result; 364 365 tsc->sc_need_acomp = 0; 366 367 /* 368 * Grr, braindead ThunderLAN PHY doesn't self-configure 369 * after autonegotiation. We have to do it ourselves 370 * based on the link partner status. 371 */ 372 373 PHY_READ(sc, MII_ANER, &aner); 374 if (aner & ANER_LPAN) { 375 PHY_READ(sc, MII_ANAR, &anar); 376 PHY_READ(sc, MII_ANLPAR, &anlpar); 377 result = anar & anlpar; 378 if (result & ANAR_10_FD) { 379 PHY_WRITE(sc, MII_BMCR, BMCR_FDX); 380 return; 381 } 382 } 383 PHY_WRITE(sc, MII_BMCR, 0); 384 } 385
Indexes created Wed Sep 24 05:09:52 GMT 2025