mii_physubr.c revision 1.78
1 /* $NetBSD: mii_physubr.c,v 1.78 2013/06/09 09:56:17 msaitoh Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999, 2000, 2001 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 * Subroutines common to all PHYs. 35 */ 36 37 #include <sys/cdefs.h> 38 __KERNEL_RCSID(0, "$NetBSD: mii_physubr.c,v 1.78 2013/06/09 09:56:17 msaitoh Exp $"); 39 40 #include <sys/param.h> 41 #include <sys/device.h> 42 #include <sys/systm.h> 43 #include <sys/kernel.h> 44 #include <sys/socket.h> 45 #include <sys/errno.h> 46 #include <sys/module.h> 47 #include <sys/proc.h> 48 49 #include <net/if.h> 50 #include <net/if_media.h> 51 #include <net/route.h> 52 53 #include <dev/mii/mii.h> 54 #include <dev/mii/miivar.h> 55 56 const char *(*mii_get_descr)(int, int) = mii_get_descr_stub; 57 58 int mii_verbose_loaded = 0; 59 60 const char *mii_get_descr_stub(int oui, int model) 61 { 62 mii_load_verbose(); 63 if (mii_verbose_loaded) 64 return mii_get_descr(oui, model); 65 else 66 return NULL; 67 } 68 69 /* 70 * Routine to load the miiverbose kernel module as needed 71 */ 72 void mii_load_verbose(void) 73 { 74 if (mii_verbose_loaded == 0) 75 module_autoload("miiverbose", MODULE_CLASS_MISC); 76 } 77 78 static void mii_phy_statusmsg(struct mii_softc *); 79 80 /* 81 * Media to register setting conversion table. Order matters. 82 */ 83 static const struct mii_media mii_media_table[MII_NMEDIA] = { 84 /* None */ 85 { BMCR_ISO, ANAR_CSMA, 86 0, }, 87 88 /* 10baseT */ 89 { BMCR_S10, ANAR_CSMA|ANAR_10, 90 0, }, 91 92 /* 10baseT-FDX */ 93 { BMCR_S10|BMCR_FDX, ANAR_CSMA|ANAR_10_FD, 94 0, }, 95 96 /* 100baseT4 */ 97 { BMCR_S100, ANAR_CSMA|ANAR_T4, 98 0, }, 99 100 /* 100baseTX */ 101 { BMCR_S100, ANAR_CSMA|ANAR_TX, 102 0, }, 103 104 /* 100baseTX-FDX */ 105 { BMCR_S100|BMCR_FDX, ANAR_CSMA|ANAR_TX_FD, 106 0, }, 107 108 /* 1000baseX */ 109 { BMCR_S1000, ANAR_CSMA, 110 0, }, 111 112 /* 1000baseX-FDX */ 113 { BMCR_S1000|BMCR_FDX, ANAR_CSMA, 114 0, }, 115 116 /* 1000baseT */ 117 { BMCR_S1000, ANAR_CSMA, 118 GTCR_ADV_1000THDX }, 119 120 /* 1000baseT-FDX */ 121 { BMCR_S1000, ANAR_CSMA, 122 GTCR_ADV_1000TFDX }, 123 }; 124 125 static void mii_phy_auto_timeout(void *); 126 127 void 128 mii_phy_setmedia(struct mii_softc *sc) 129 { 130 struct mii_data *mii = sc->mii_pdata; 131 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 132 int bmcr, anar, gtcr; 133 134 if (IFM_SUBTYPE(ife->ifm_media) == IFM_AUTO) { 135 /* 136 * Force renegotiation if MIIF_DOPAUSE. 137 * 138 * XXX This is only necessary because many NICs don't 139 * XXX advertise PAUSE capabilities at boot time. Maybe 140 * XXX we should force this only once? 141 */ 142 if ((PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) == 0 || 143 (sc->mii_flags & (MIIF_FORCEANEG|MIIF_DOPAUSE))) 144 (void) mii_phy_auto(sc, 1); 145 return; 146 } 147 148 /* 149 * Table index is stored in the media entry. 150 */ 151 152 #ifdef DIAGNOSTIC 153 if (/* ife->ifm_data < 0 || */ ife->ifm_data >= MII_NMEDIA) 154 panic("mii_phy_setmedia"); 155 #endif 156 157 anar = mii_media_table[ife->ifm_data].mm_anar; 158 bmcr = mii_media_table[ife->ifm_data].mm_bmcr; 159 gtcr = mii_media_table[ife->ifm_data].mm_gtcr; 160 161 if (mii->mii_media.ifm_media & IFM_ETH_MASTER) { 162 switch (IFM_SUBTYPE(ife->ifm_media)) { 163 case IFM_1000_T: 164 gtcr |= GTCR_MAN_MS|GTCR_ADV_MS; 165 break; 166 167 default: 168 panic("mii_phy_setmedia: MASTER on wrong media"); 169 } 170 } 171 172 if (mii->mii_media.ifm_media & IFM_FLOW) { 173 if (sc->mii_flags & MIIF_IS_1000X) 174 anar |= ANAR_X_PAUSE_SYM | ANAR_X_PAUSE_ASYM; 175 else { 176 anar |= ANAR_FC; 177 /* XXX Only 1000BASE-T has PAUSE_ASYM? */ 178 if ((sc->mii_flags & MIIF_HAVE_GTCR) && 179 (sc->mii_extcapabilities & 180 (EXTSR_1000THDX|EXTSR_1000TFDX))) 181 anar |= ANAR_X_PAUSE_ASYM; 182 } 183 } 184 185 if (ife->ifm_media & IFM_LOOP) 186 bmcr |= BMCR_LOOP; 187 188 PHY_WRITE(sc, MII_ANAR, anar); 189 if (sc->mii_flags & MIIF_HAVE_GTCR) 190 PHY_WRITE(sc, MII_100T2CR, gtcr); 191 if (IFM_SUBTYPE(ife->ifm_media) == IFM_1000_T) { 192 mii_phy_auto(sc, 0); 193 } else { 194 PHY_WRITE(sc, MII_BMCR, bmcr); 195 } 196 } 197 198 int 199 mii_phy_auto(struct mii_softc *sc, int waitfor) 200 { 201 int i; 202 struct mii_data *mii = sc->mii_pdata; 203 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 204 205 sc->mii_ticks = 0; 206 if ((sc->mii_flags & MIIF_DOINGAUTO) == 0) { 207 /* 208 * Check for 1000BASE-X. Autonegotiation is a bit 209 * different on such devices. 210 */ 211 if (sc->mii_flags & MIIF_IS_1000X) { 212 uint16_t anar = 0; 213 214 if (sc->mii_extcapabilities & EXTSR_1000XFDX) 215 anar |= ANAR_X_FD; 216 if (sc->mii_extcapabilities & EXTSR_1000XHDX) 217 anar |= ANAR_X_HD; 218 219 if (sc->mii_flags & MIIF_DOPAUSE) { 220 /* XXX Asymmetric vs. symmetric? */ 221 anar |= ANLPAR_X_PAUSE_TOWARDS; 222 } 223 224 PHY_WRITE(sc, MII_ANAR, anar); 225 } else { 226 uint16_t anar; 227 228 anar = BMSR_MEDIA_TO_ANAR(sc->mii_capabilities) | 229 ANAR_CSMA; 230 if (sc->mii_flags & MIIF_DOPAUSE) { 231 anar |= ANAR_FC; 232 /* XXX Only 1000BASE-T has PAUSE_ASYM? */ 233 if ((sc->mii_flags & MIIF_HAVE_GTCR) && 234 (sc->mii_extcapabilities & 235 (EXTSR_1000THDX|EXTSR_1000TFDX))) 236 anar |= ANAR_X_PAUSE_ASYM; 237 } 238 239 /* 240 *for 1000-base-T, autonegotiation mus be enabled, but 241 *if we're not set to auto, only advertise 242 *1000-base-T with the link partner. 243 */ 244 if (IFM_SUBTYPE(ife->ifm_media) == IFM_1000_T) { 245 anar &= ~(ANAR_T4|ANAR_TX_FD|ANAR_TX|ANAR_10_FD|ANAR_10); 246 } 247 248 PHY_WRITE(sc, MII_ANAR, anar); 249 if (sc->mii_flags & MIIF_HAVE_GTCR) { 250 uint16_t gtcr = 0; 251 252 if (sc->mii_extcapabilities & EXTSR_1000TFDX) 253 gtcr |= GTCR_ADV_1000TFDX; 254 if (sc->mii_extcapabilities & EXTSR_1000THDX) 255 gtcr |= GTCR_ADV_1000THDX; 256 257 PHY_WRITE(sc, MII_100T2CR, gtcr); 258 } 259 } 260 PHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN | BMCR_STARTNEG); 261 } 262 263 if (waitfor) { 264 /* Wait 500ms for it to complete. */ 265 for (i = 0; i < 500; i++) { 266 if (PHY_READ(sc, MII_BMSR) & BMSR_ACOMP) 267 return (0); 268 delay(1000); 269 } 270 271 /* 272 * Don't need to worry about clearing MIIF_DOINGAUTO. 273 * If that's set, a timeout is pending, and it will 274 * clear the flag. 275 */ 276 return (EIO); 277 } 278 279 /* 280 * Just let it finish asynchronously. This is for the benefit of 281 * the tick handler driving autonegotiation. Don't want 500ms 282 * delays all the time while the system is running! 283 */ 284 if (sc->mii_flags & MIIF_AUTOTSLEEP) { 285 sc->mii_flags |= MIIF_DOINGAUTO; 286 tsleep(&sc->mii_flags, PZERO, "miiaut", hz >> 1); 287 mii_phy_auto_timeout(sc); 288 } else if ((sc->mii_flags & MIIF_DOINGAUTO) == 0) { 289 sc->mii_flags |= MIIF_DOINGAUTO; 290 callout_reset(&sc->mii_nway_ch, hz >> 1, 291 mii_phy_auto_timeout, sc); 292 } 293 return (EJUSTRETURN); 294 } 295 296 static void 297 mii_phy_auto_timeout(void *arg) 298 { 299 struct mii_softc *sc = arg; 300 int s; 301 302 if (!device_is_active(sc->mii_dev)) 303 return; 304 305 s = splnet(); 306 sc->mii_flags &= ~MIIF_DOINGAUTO; 307 308 /* Update the media status. */ 309 (void) PHY_SERVICE(sc, sc->mii_pdata, MII_POLLSTAT); 310 splx(s); 311 } 312 313 int 314 mii_phy_tick(struct mii_softc *sc) 315 { 316 struct mii_data *mii = sc->mii_pdata; 317 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 318 int reg; 319 320 /* Just bail now if the interface is down. */ 321 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 322 return (EJUSTRETURN); 323 324 /* 325 * If we're not doing autonegotiation, we don't need to do 326 * any extra work here. However, we need to check the link 327 * status so we can generate an announcement by returning 328 * with 0 if the status changes. 329 */ 330 if ((IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) && 331 (IFM_SUBTYPE(ife->ifm_media) != IFM_1000_T)) { 332 /* 333 * Reset autonegotiation timer to 0 just to make sure 334 * the future autonegotiation start with 0. 335 */ 336 sc->mii_ticks = 0; 337 return (0); 338 } 339 340 /* Read the status register twice; BMSR_LINK is latch-low. */ 341 reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 342 if (reg & BMSR_LINK) { 343 /* 344 * Reset autonegotiation timer to 0 in case the link 345 * goes down in the next tick. 346 */ 347 sc->mii_ticks = 0; 348 /* See above. */ 349 return (0); 350 } 351 352 /* 353 * mii_ticks == 0 means it's the first tick after changing the media or 354 * the link became down since the last tick (see above), so return with 355 * 0 to update the status. 356 */ 357 if (sc->mii_ticks++ == 0) 358 return (0); 359 360 /* 361 * Only retry autonegotiation every N seconds. 362 */ 363 KASSERT(sc->mii_anegticks != 0); 364 if (sc->mii_ticks <= sc->mii_anegticks) 365 return (EJUSTRETURN); 366 367 PHY_RESET(sc); 368 369 if (mii_phy_auto(sc, 0) == EJUSTRETURN) 370 return (EJUSTRETURN); 371 372 /* 373 * Might need to generate a status message if autonegotiation 374 * failed. 375 */ 376 return (0); 377 } 378 379 void 380 mii_phy_reset(struct mii_softc *sc) 381 { 382 int reg, i; 383 384 if (sc->mii_flags & MIIF_NOISOLATE) 385 reg = BMCR_RESET; 386 else 387 reg = BMCR_RESET | BMCR_ISO; 388 PHY_WRITE(sc, MII_BMCR, reg); 389 390 /* Wait another 100ms for it to complete. */ 391 for (i = 0; i < 100; i++) { 392 reg = PHY_READ(sc, MII_BMCR); 393 if ((reg & BMCR_RESET) == 0) 394 break; 395 delay(1000); 396 } 397 398 if (sc->mii_inst != 0 && ((sc->mii_flags & MIIF_NOISOLATE) == 0)) 399 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 400 } 401 402 void 403 mii_phy_down(struct mii_softc *sc) 404 { 405 406 if (sc->mii_flags & MIIF_DOINGAUTO) { 407 sc->mii_flags &= ~MIIF_DOINGAUTO; 408 callout_stop(&sc->mii_nway_ch); 409 } 410 } 411 412 void 413 mii_phy_status(struct mii_softc *sc) 414 { 415 416 PHY_STATUS(sc); 417 } 418 419 void 420 mii_phy_update(struct mii_softc *sc, int cmd) 421 { 422 struct mii_data *mii = sc->mii_pdata; 423 424 if (sc->mii_media_active != mii->mii_media_active || 425 sc->mii_media_status != mii->mii_media_status || 426 cmd == MII_MEDIACHG) { 427 mii_phy_statusmsg(sc); 428 (*mii->mii_statchg)(mii->mii_ifp); 429 sc->mii_media_active = mii->mii_media_active; 430 sc->mii_media_status = mii->mii_media_status; 431 } 432 } 433 434 static void 435 mii_phy_statusmsg(struct mii_softc *sc) 436 { 437 struct mii_data *mii = sc->mii_pdata; 438 struct ifnet *ifp = mii->mii_ifp; 439 int s; 440 441 s = splnet(); 442 if (mii->mii_media_status & IFM_AVALID) { 443 if (mii->mii_media_status & IFM_ACTIVE) 444 if_link_state_change(ifp, LINK_STATE_UP); 445 else 446 if_link_state_change(ifp, LINK_STATE_DOWN); 447 } else 448 if_link_state_change(ifp, LINK_STATE_UNKNOWN); 449 splx(s); 450 451 ifp->if_baudrate = ifmedia_baudrate(mii->mii_media_active); 452 } 453 454 /* 455 * Initialize generic PHY media based on BMSR, called when a PHY is 456 * attached. We expect to be set up to print a comma-separated list 457 * of media names. Does not print a newline. 458 */ 459 void 460 mii_phy_add_media(struct mii_softc *sc) 461 { 462 struct mii_data *mii = sc->mii_pdata; 463 device_t self = sc->mii_dev; 464 const char *sep = ""; 465 int fdx = 0; 466 467 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 468 #define PRINT(n) aprint_normal("%s%s", sep, (n)); sep = ", " 469 470 if ((sc->mii_flags & MIIF_NOISOLATE) == 0) 471 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 472 MII_MEDIA_NONE); 473 474 /* 475 * There are different interpretations for the bits in 476 * HomePNA PHYs. And there is really only one media type 477 * that is supported. 478 */ 479 if (sc->mii_flags & MIIF_IS_HPNA) { 480 if (sc->mii_capabilities & BMSR_10THDX) { 481 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_HPNA_1, 0, 482 sc->mii_inst), 483 MII_MEDIA_10_T); 484 PRINT("HomePNA1"); 485 } 486 goto out; 487 } 488 489 if (sc->mii_capabilities & BMSR_10THDX) { 490 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, sc->mii_inst), 491 MII_MEDIA_10_T); 492 PRINT("10baseT"); 493 } 494 if (sc->mii_capabilities & BMSR_10TFDX) { 495 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_FDX, sc->mii_inst), 496 MII_MEDIA_10_T_FDX); 497 PRINT("10baseT-FDX"); 498 fdx = 1; 499 } 500 if (sc->mii_capabilities & BMSR_100TXHDX) { 501 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, 0, sc->mii_inst), 502 MII_MEDIA_100_TX); 503 PRINT("100baseTX"); 504 } 505 if (sc->mii_capabilities & BMSR_100TXFDX) { 506 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_FDX, sc->mii_inst), 507 MII_MEDIA_100_TX_FDX); 508 PRINT("100baseTX-FDX"); 509 fdx = 1; 510 } 511 if (sc->mii_capabilities & BMSR_100T4) { 512 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_T4, 0, sc->mii_inst), 513 MII_MEDIA_100_T4); 514 PRINT("100baseT4"); 515 } 516 517 if (sc->mii_extcapabilities & EXTSR_MEDIAMASK) { 518 /* 519 * XXX Right now only handle 1000SX and 1000TX. Need 520 * XXX to handle 1000LX and 1000CX some how. 521 * 522 * Note since it can take 5 seconds to auto-negotiate 523 * a gigabit link, we make anegticks 10 seconds for 524 * all the gigabit media types. 525 */ 526 if (sc->mii_extcapabilities & EXTSR_1000XHDX) { 527 sc->mii_anegticks = MII_ANEGTICKS_GIGE; 528 sc->mii_flags |= MIIF_IS_1000X; 529 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0, 530 sc->mii_inst), MII_MEDIA_1000_X); 531 PRINT("1000baseSX"); 532 } 533 if (sc->mii_extcapabilities & EXTSR_1000XFDX) { 534 sc->mii_anegticks = MII_ANEGTICKS_GIGE; 535 sc->mii_flags |= MIIF_IS_1000X; 536 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX, 537 sc->mii_inst), MII_MEDIA_1000_X_FDX); 538 PRINT("1000baseSX-FDX"); 539 fdx = 1; 540 } 541 542 /* 543 * 1000baseT media needs to be able to manipulate 544 * master/slave mode. We set IFM_ETH_MASTER in 545 * the "don't care mask" and filter it out when 546 * the media is set. 547 * 548 * All 1000baseT PHYs have a 1000baseT control register. 549 */ 550 if (sc->mii_extcapabilities & EXTSR_1000THDX) { 551 sc->mii_anegticks = MII_ANEGTICKS_GIGE; 552 sc->mii_flags |= MIIF_HAVE_GTCR; 553 mii->mii_media.ifm_mask |= IFM_ETH_MASTER; 554 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, 0, 555 sc->mii_inst), MII_MEDIA_1000_T); 556 PRINT("1000baseT"); 557 } 558 if (sc->mii_extcapabilities & EXTSR_1000TFDX) { 559 sc->mii_anegticks = MII_ANEGTICKS_GIGE; 560 sc->mii_flags |= MIIF_HAVE_GTCR; 561 mii->mii_media.ifm_mask |= IFM_ETH_MASTER; 562 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, IFM_FDX, 563 sc->mii_inst), MII_MEDIA_1000_T_FDX); 564 PRINT("1000baseT-FDX"); 565 fdx = 1; 566 } 567 } 568 569 if (sc->mii_capabilities & BMSR_ANEG) { 570 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 571 MII_NMEDIA); /* intentionally invalid index */ 572 PRINT("auto"); 573 } 574 #undef ADD 575 #undef PRINT 576 if (fdx != 0 && (sc->mii_flags & MIIF_DOPAUSE)) 577 mii->mii_media.ifm_mask |= IFM_ETH_FMASK; 578 out: 579 if (!pmf_device_register(self, NULL, mii_phy_resume)) { 580 aprint_normal("\n"); 581 aprint_error_dev(self, "couldn't establish power handler"); 582 } 583 } 584 585 void 586 mii_phy_delete_media(struct mii_softc *sc) 587 { 588 struct mii_data *mii = sc->mii_pdata; 589 590 ifmedia_delete_instance(&mii->mii_media, sc->mii_inst); 591 } 592 593 int 594 mii_phy_activate(device_t self, enum devact act) 595 { 596 switch (act) { 597 case DVACT_DEACTIVATE: 598 /* XXX Invalidate parent's media setting? */ 599 return 0; 600 default: 601 return EOPNOTSUPP; 602 } 603 } 604 605 /* ARGSUSED1 */ 606 int 607 mii_phy_detach(device_t self, int flags) 608 { 609 struct mii_softc *sc = device_private(self); 610 611 /* XXX Invalidate parent's media setting? */ 612 613 if (sc->mii_flags & MIIF_DOINGAUTO) 614 callout_halt(&sc->mii_nway_ch, NULL); 615 616 callout_destroy(&sc->mii_nway_ch); 617 618 mii_phy_delete_media(sc); 619 LIST_REMOVE(sc, mii_list); 620 621 return (0); 622 } 623 624 const struct mii_phydesc * 625 mii_phy_match(const struct mii_attach_args *ma, const struct mii_phydesc *mpd) 626 { 627 628 for (; mpd->mpd_name != NULL; mpd++) { 629 if (MII_OUI(ma->mii_id1, ma->mii_id2) == mpd->mpd_oui && 630 MII_MODEL(ma->mii_id2) == mpd->mpd_model) 631 return (mpd); 632 } 633 return (NULL); 634 } 635 636 /* 637 * Return the flow control status flag from MII_ANAR & MII_ANLPAR. 638 */ 639 u_int 640 mii_phy_flowstatus(struct mii_softc *sc) 641 { 642 u_int anar, anlpar; 643 644 if ((sc->mii_flags & MIIF_DOPAUSE) == 0) 645 return (0); 646 647 anar = PHY_READ(sc, MII_ANAR); 648 anlpar = PHY_READ(sc, MII_ANLPAR); 649 650 if ((anar & ANAR_X_PAUSE_SYM) & (anlpar & ANLPAR_X_PAUSE_SYM)) 651 return (IFM_FLOW|IFM_ETH_TXPAUSE|IFM_ETH_RXPAUSE); 652 653 if ((anar & ANAR_X_PAUSE_SYM) == 0) { 654 if ((anar & ANAR_X_PAUSE_ASYM) && 655 ((anlpar & 656 ANLPAR_X_PAUSE_TOWARDS) == ANLPAR_X_PAUSE_TOWARDS)) 657 return (IFM_FLOW|IFM_ETH_TXPAUSE); 658 else 659 return (0); 660 } 661 662 if ((anar & ANAR_X_PAUSE_ASYM) == 0) { 663 if (anlpar & ANLPAR_X_PAUSE_SYM) 664 return (IFM_FLOW|IFM_ETH_TXPAUSE|IFM_ETH_RXPAUSE); 665 else 666 return (0); 667 } 668 669 switch ((anlpar & ANLPAR_X_PAUSE_TOWARDS)) { 670 case ANLPAR_X_PAUSE_NONE: 671 return (0); 672 673 case ANLPAR_X_PAUSE_ASYM: 674 return (IFM_FLOW|IFM_ETH_RXPAUSE); 675 676 default: 677 return (IFM_FLOW|IFM_ETH_RXPAUSE|IFM_ETH_TXPAUSE); 678 } 679 /* NOTREACHED */ 680 } 681 682 bool 683 mii_phy_resume(device_t dv, const pmf_qual_t *qual) 684 { 685 struct mii_softc *sc = device_private(dv); 686 687 PHY_RESET(sc); 688 return PHY_SERVICE(sc, sc->mii_pdata, MII_MEDIACHG) == 0; 689 } 690 691 692 /* 693 * Given an ifmedia word, return the corresponding ANAR value. 694 */ 695 int 696 mii_anar(int media) 697 { 698 int rv; 699 700 #ifdef DIAGNOSTIC 701 if (/* media < 0 || */ media >= MII_NMEDIA) 702 panic("mii_anar"); 703 #endif 704 705 rv = mii_media_table[media].mm_anar; 706 707 return rv; 708 } 709
Indexes created Mon Sep 29 21:09:56 GMT 2025