mii_physubr.c revision 1.86
1 /* $NetBSD: mii_physubr.c,v 1.86 2019/03/25 09:20:46 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 1.86 2019/03/25 09:20:46 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 * 61 mii_get_descr_stub(int oui, int model) 62 { 63 mii_load_verbose(); 64 if (mii_verbose_loaded) 65 return mii_get_descr(oui, model); 66 else 67 return NULL; 68 } 69 70 /* 71 * Routine to load the miiverbose kernel module as needed 72 */ 73 void 74 mii_load_verbose(void) 75 { 76 if (mii_verbose_loaded == 0) 77 module_autoload("miiverbose", MODULE_CLASS_MISC); 78 } 79 80 static void mii_phy_statusmsg(struct mii_softc *); 81 82 /* 83 * Media to register setting conversion table. Order matters. 84 */ 85 static const struct mii_media mii_media_table[MII_NMEDIA] = { 86 /* None */ 87 { BMCR_ISO, ANAR_CSMA, 88 0, }, 89 90 /* 10baseT */ 91 { BMCR_S10, ANAR_CSMA | ANAR_10, 92 0, }, 93 94 /* 10baseT-FDX */ 95 { BMCR_S10|BMCR_FDX, ANAR_CSMA | ANAR_10_FD, 96 0, }, 97 98 /* 100baseT4 */ 99 { BMCR_S100, ANAR_CSMA | ANAR_T4, 100 0, }, 101 102 /* 100baseTX */ 103 { BMCR_S100, ANAR_CSMA | ANAR_TX, 104 0, }, 105 106 /* 100baseTX-FDX */ 107 { BMCR_S100|BMCR_FDX, ANAR_CSMA | ANAR_TX_FD, 108 0, }, 109 110 /* 1000baseX */ 111 { BMCR_S1000, ANAR_CSMA, 112 0, }, 113 114 /* 1000baseX-FDX */ 115 { BMCR_S1000|BMCR_FDX, ANAR_CSMA, 116 0, }, 117 118 /* 1000baseT */ 119 { BMCR_S1000, ANAR_CSMA, 120 GTCR_ADV_1000THDX }, 121 122 /* 1000baseT-FDX */ 123 { BMCR_S1000, ANAR_CSMA, 124 GTCR_ADV_1000TFDX }, 125 }; 126 127 static void mii_phy_auto_timeout(void *); 128 129 void 130 mii_phy_setmedia(struct mii_softc *sc) 131 { 132 struct mii_data *mii = sc->mii_pdata; 133 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 134 uint16_t bmcr, anar, gtcr; 135 136 if (IFM_SUBTYPE(ife->ifm_media) == IFM_AUTO) { 137 /* 138 * Force renegotiation if MIIF_DOPAUSE. 139 * 140 * XXX This is only necessary because many NICs don't 141 * XXX advertise PAUSE capabilities at boot time. Maybe 142 * XXX we should force this only once? 143 */ 144 PHY_READ(sc, MII_BMCR, &bmcr); 145 if ((bmcr & BMCR_AUTOEN) == 0 || 146 (sc->mii_flags & (MIIF_FORCEANEG | MIIF_DOPAUSE))) 147 (void) mii_phy_auto(sc, 1); 148 return; 149 } 150 151 /* Table index is stored in the media entry. */ 152 153 #ifdef DIAGNOSTIC 154 if (/* ife->ifm_data < 0 || */ ife->ifm_data >= MII_NMEDIA) 155 panic("mii_phy_setmedia"); 156 #endif 157 158 anar = mii_media_table[ife->ifm_data].mm_anar; 159 bmcr = mii_media_table[ife->ifm_data].mm_bmcr; 160 gtcr = mii_media_table[ife->ifm_data].mm_gtcr; 161 162 if (mii->mii_media.ifm_media & IFM_ETH_MASTER) { 163 switch (IFM_SUBTYPE(ife->ifm_media)) { 164 case IFM_1000_T: 165 gtcr |= GTCR_MAN_MS | GTCR_ADV_MS; 166 break; 167 168 default: 169 panic("mii_phy_setmedia: MASTER on wrong media"); 170 } 171 } 172 173 if (mii->mii_media.ifm_media & IFM_FLOW) { 174 if (sc->mii_flags & MIIF_IS_1000X) 175 anar |= ANAR_X_PAUSE_SYM | ANAR_X_PAUSE_ASYM; 176 else { 177 anar |= ANAR_FC; 178 /* XXX Only 1000BASE-T has PAUSE_ASYM? */ 179 if ((sc->mii_flags & MIIF_HAVE_GTCR) && 180 (sc->mii_extcapabilities & 181 (EXTSR_1000THDX | EXTSR_1000TFDX))) 182 anar |= ANAR_PAUSE_ASYM; 183 } 184 } 185 186 if (ife->ifm_media & IFM_LOOP) 187 bmcr |= BMCR_LOOP; 188 189 PHY_WRITE(sc, MII_ANAR, anar); 190 if (sc->mii_flags & MIIF_HAVE_GTCR) 191 PHY_WRITE(sc, MII_100T2CR, gtcr); 192 if (IFM_SUBTYPE(ife->ifm_media) == IFM_1000_T) 193 mii_phy_auto(sc, 0); 194 else 195 PHY_WRITE(sc, MII_BMCR, bmcr); 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_PAUSE_ASYM; 237 } 238 239 /* 240 * For 1000-base-T, autonegotiation must be enabled, 241 * but 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 | 246 ANAR_10_FD | ANAR_10); 247 } 248 249 PHY_WRITE(sc, MII_ANAR, anar); 250 if (sc->mii_flags & MIIF_HAVE_GTCR) { 251 uint16_t gtcr = 0; 252 253 if (sc->mii_extcapabilities & EXTSR_1000TFDX) 254 gtcr |= GTCR_ADV_1000TFDX; 255 if (sc->mii_extcapabilities & EXTSR_1000THDX) 256 gtcr |= GTCR_ADV_1000THDX; 257 258 PHY_WRITE(sc, MII_100T2CR, gtcr); 259 } 260 } 261 PHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN | BMCR_STARTNEG); 262 } 263 264 if (waitfor) { 265 /* Wait 500ms for it to complete. */ 266 for (i = 0; i < 500; i++) { 267 uint16_t bmsr; 268 269 PHY_READ(sc, MII_BMSR, &bmsr); 270 if (bmsr & BMSR_ACOMP) 271 return 0; 272 delay(1000); 273 } 274 275 /* 276 * Don't need to worry about clearing MIIF_DOINGAUTO. If that's 277 * set, a timeout is pending, and it will clear the flag. 278 */ 279 return EIO; 280 } 281 282 /* 283 * Just let it finish asynchronously. This is for the benefit of 284 * the tick handler driving autonegotiation. Don't want 500ms 285 * delays all the time while the system is running! 286 */ 287 if (sc->mii_flags & MIIF_AUTOTSLEEP) { 288 sc->mii_flags |= MIIF_DOINGAUTO; 289 tsleep(&sc->mii_flags, PZERO, "miiaut", hz >> 1); 290 mii_phy_auto_timeout(sc); 291 } else if ((sc->mii_flags & MIIF_DOINGAUTO) == 0) { 292 sc->mii_flags |= MIIF_DOINGAUTO; 293 callout_reset(&sc->mii_nway_ch, hz >> 1, 294 mii_phy_auto_timeout, sc); 295 } 296 return EJUSTRETURN; 297 } 298 299 static void 300 mii_phy_auto_timeout(void *arg) 301 { 302 struct mii_softc *sc = arg; 303 int s; 304 305 if (!device_is_active(sc->mii_dev)) 306 return; 307 308 s = splnet(); 309 sc->mii_flags &= ~MIIF_DOINGAUTO; 310 311 /* Update the media status. */ 312 (void) PHY_SERVICE(sc, sc->mii_pdata, MII_POLLSTAT); 313 splx(s); 314 } 315 316 int 317 mii_phy_tick(struct mii_softc *sc) 318 { 319 struct mii_data *mii = sc->mii_pdata; 320 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 321 uint16_t reg; 322 323 /* Just bail now if the interface is down. */ 324 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 325 return EJUSTRETURN; 326 327 /* 328 * If we're not doing autonegotiation, we don't need to do any extra 329 * work here. However, we need to check the link status so we can 330 * generate an announcement by returning with 0 if the status changes. 331 */ 332 if ((IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) && 333 (IFM_SUBTYPE(ife->ifm_media) != IFM_1000_T)) { 334 /* 335 * Reset autonegotiation timer to 0 just to make sure 336 * the future autonegotiation start with 0. 337 */ 338 sc->mii_ticks = 0; 339 return 0; 340 } 341 342 /* Read the status register twice; BMSR_LINK is latch-low. */ 343 PHY_READ(sc, MII_BMSR, ®); 344 PHY_READ(sc, MII_BMSR, ®); 345 if (reg & BMSR_LINK) { 346 /* 347 * Reset autonegotiation timer to 0 in case the link 348 * goes down in the next tick. 349 */ 350 sc->mii_ticks = 0; 351 /* See above. */ 352 return 0; 353 } 354 355 /* 356 * mii_ticks == 0 means it's the first tick after changing the media or 357 * the link became down since the last tick (see above), so return with 358 * 0 to update the status. 359 */ 360 if (sc->mii_ticks++ == 0) 361 return 0; 362 363 /* 364 * Only retry autonegotiation every N seconds. 365 */ 366 KASSERT(sc->mii_anegticks != 0); 367 if (sc->mii_ticks <= sc->mii_anegticks) 368 return EJUSTRETURN; 369 370 PHY_RESET(sc); 371 372 if (mii_phy_auto(sc, 0) == EJUSTRETURN) 373 return EJUSTRETURN; 374 375 /* 376 * Might need to generate a status message if autonegotiation 377 * failed. 378 */ 379 return 0; 380 } 381 382 void 383 mii_phy_reset(struct mii_softc *sc) 384 { 385 int i; 386 uint16_t reg; 387 388 if (sc->mii_flags & MIIF_NOISOLATE) 389 reg = BMCR_RESET; 390 else 391 reg = BMCR_RESET | BMCR_ISO; 392 PHY_WRITE(sc, MII_BMCR, reg); 393 394 /* Wait another 500ms for it to complete. */ 395 for (i = 0; i < 500; i++) { 396 PHY_READ(sc, MII_BMCR, ®); 397 if ((reg & BMCR_RESET) == 0) 398 break; 399 delay(1000); 400 } 401 402 if (sc->mii_inst != 0 && ((sc->mii_flags & MIIF_NOISOLATE) == 0)) 403 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 404 } 405 406 void 407 mii_phy_down(struct mii_softc *sc) 408 { 409 410 if (sc->mii_flags & MIIF_DOINGAUTO) { 411 sc->mii_flags &= ~MIIF_DOINGAUTO; 412 callout_stop(&sc->mii_nway_ch); 413 } 414 } 415 416 void 417 mii_phy_status(struct mii_softc *sc) 418 { 419 420 PHY_STATUS(sc); 421 } 422 423 void 424 mii_phy_update(struct mii_softc *sc, int cmd) 425 { 426 struct mii_data *mii = sc->mii_pdata; 427 428 if (sc->mii_media_active != mii->mii_media_active || 429 sc->mii_media_status != mii->mii_media_status || 430 cmd == MII_MEDIACHG) { 431 mii_phy_statusmsg(sc); 432 (*mii->mii_statchg)(mii->mii_ifp); 433 sc->mii_media_active = mii->mii_media_active; 434 sc->mii_media_status = mii->mii_media_status; 435 } 436 } 437 438 static void 439 mii_phy_statusmsg(struct mii_softc *sc) 440 { 441 struct mii_data *mii = sc->mii_pdata; 442 struct ifnet *ifp = mii->mii_ifp; 443 444 if (mii->mii_media_status & IFM_AVALID) { 445 if (mii->mii_media_status & IFM_ACTIVE) 446 if_link_state_change(ifp, LINK_STATE_UP); 447 else 448 if_link_state_change(ifp, LINK_STATE_DOWN); 449 } else 450 if_link_state_change(ifp, LINK_STATE_UNKNOWN); 451 452 ifp->if_baudrate = ifmedia_baudrate(mii->mii_media_active); 453 } 454 455 /* 456 * Initialize generic PHY media based on BMSR, called when a PHY is 457 * attached. We expect to be set up to print a comma-separated list 458 * of media names. Does not print a newline. 459 */ 460 void 461 mii_phy_add_media(struct mii_softc *sc) 462 { 463 struct mii_data *mii = sc->mii_pdata; 464 device_t self = sc->mii_dev; 465 const char *sep = ""; 466 int fdx = 0; 467 468 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 469 #define PRINT(n) aprint_normal("%s%s", sep, (n)); sep = ", " 470 471 if ((sc->mii_flags & MIIF_NOISOLATE) == 0) 472 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 473 MII_MEDIA_NONE); 474 475 /* 476 * There are different interpretations for the bits in 477 * HomePNA PHYs. And there is really only one media type 478 * that is supported. 479 */ 480 if (sc->mii_flags & MIIF_IS_HPNA) { 481 if (sc->mii_capabilities & BMSR_10THDX) { 482 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_HPNA_1, 0, 483 sc->mii_inst), 484 MII_MEDIA_10_T); 485 PRINT("HomePNA1"); 486 } 487 goto out; 488 } 489 490 if (sc->mii_capabilities & BMSR_10THDX) { 491 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, sc->mii_inst), 492 MII_MEDIA_10_T); 493 PRINT("10baseT"); 494 } 495 if (sc->mii_capabilities & BMSR_10TFDX) { 496 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_FDX, sc->mii_inst), 497 MII_MEDIA_10_T_FDX); 498 PRINT("10baseT-FDX"); 499 fdx = 1; 500 } 501 if (sc->mii_capabilities & BMSR_100TXHDX) { 502 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, 0, sc->mii_inst), 503 MII_MEDIA_100_TX); 504 PRINT("100baseTX"); 505 } 506 if (sc->mii_capabilities & BMSR_100TXFDX) { 507 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_FDX, sc->mii_inst), 508 MII_MEDIA_100_TX_FDX); 509 PRINT("100baseTX-FDX"); 510 fdx = 1; 511 } 512 if (sc->mii_capabilities & BMSR_100T4) { 513 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_T4, 0, sc->mii_inst), 514 MII_MEDIA_100_T4); 515 PRINT("100baseT4"); 516 } 517 518 if (sc->mii_extcapabilities & EXTSR_MEDIAMASK) { 519 /* 520 * XXX Right now only handle 1000SX and 1000TX. Need 521 * XXX to handle 1000LX and 1000CX some how. 522 * 523 * Note since it can take 5 seconds to auto-negotiate 524 * a gigabit link, we make anegticks 10 seconds for 525 * all the gigabit media types. 526 */ 527 if (sc->mii_extcapabilities & EXTSR_1000XHDX) { 528 sc->mii_anegticks = MII_ANEGTICKS_GIGE; 529 sc->mii_flags |= MIIF_IS_1000X; 530 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0, 531 sc->mii_inst), MII_MEDIA_1000_X); 532 PRINT("1000baseSX"); 533 } 534 if (sc->mii_extcapabilities & EXTSR_1000XFDX) { 535 sc->mii_anegticks = MII_ANEGTICKS_GIGE; 536 sc->mii_flags |= MIIF_IS_1000X; 537 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX, 538 sc->mii_inst), MII_MEDIA_1000_X_FDX); 539 PRINT("1000baseSX-FDX"); 540 fdx = 1; 541 } 542 543 /* 544 * 1000baseT media needs to be able to manipulate 545 * master/slave mode. We set IFM_ETH_MASTER in 546 * the "don't care mask" and filter it out when 547 * the media is set. 548 * 549 * All 1000baseT PHYs have a 1000baseT control register. 550 */ 551 if (sc->mii_extcapabilities & EXTSR_1000THDX) { 552 sc->mii_anegticks = MII_ANEGTICKS_GIGE; 553 sc->mii_flags |= MIIF_HAVE_GTCR; 554 mii->mii_media.ifm_mask |= IFM_ETH_MASTER; 555 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, 0, 556 sc->mii_inst), MII_MEDIA_1000_T); 557 PRINT("1000baseT"); 558 } 559 if (sc->mii_extcapabilities & EXTSR_1000TFDX) { 560 sc->mii_anegticks = MII_ANEGTICKS_GIGE; 561 sc->mii_flags |= MIIF_HAVE_GTCR; 562 mii->mii_media.ifm_mask |= IFM_ETH_MASTER; 563 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, IFM_FDX, 564 sc->mii_inst), MII_MEDIA_1000_T_FDX); 565 PRINT("1000baseT-FDX"); 566 fdx = 1; 567 } 568 } 569 570 if (sc->mii_capabilities & BMSR_ANEG) { 571 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 572 MII_NMEDIA); /* intentionally invalid index */ 573 PRINT("auto"); 574 } 575 #undef ADD 576 #undef PRINT 577 if (fdx != 0 && (sc->mii_flags & MIIF_DOPAUSE)) 578 mii->mii_media.ifm_mask |= IFM_ETH_FMASK; 579 out: 580 if (!pmf_device_register(self, NULL, mii_phy_resume)) { 581 aprint_normal("\n"); 582 aprint_error_dev(self, "couldn't establish power handler"); 583 } 584 } 585 586 void 587 mii_phy_delete_media(struct mii_softc *sc) 588 { 589 struct mii_data *mii = sc->mii_pdata; 590 591 ifmedia_delete_instance(&mii->mii_media, sc->mii_inst); 592 } 593 594 int 595 mii_phy_activate(device_t self, enum devact act) 596 { 597 598 switch (act) { 599 case DVACT_DEACTIVATE: 600 /* XXX Invalidate parent's media setting? */ 601 return 0; 602 default: 603 return EOPNOTSUPP; 604 } 605 } 606 607 /* ARGSUSED1 */ 608 int 609 mii_phy_detach(device_t self, int flags) 610 { 611 struct mii_softc *sc = device_private(self); 612 613 /* XXX Invalidate parent's media setting? */ 614 615 if (sc->mii_flags & MIIF_DOINGAUTO) 616 callout_halt(&sc->mii_nway_ch, NULL); 617 618 callout_destroy(&sc->mii_nway_ch); 619 620 mii_phy_delete_media(sc); 621 LIST_REMOVE(sc, mii_list); 622 623 return 0; 624 } 625 626 const struct mii_phydesc * 627 mii_phy_match(const struct mii_attach_args *ma, const struct mii_phydesc *mpd) 628 { 629 630 for (; mpd->mpd_name != NULL; mpd++) { 631 if (MII_OUI(ma->mii_id1, ma->mii_id2) == mpd->mpd_oui && 632 MII_MODEL(ma->mii_id2) == mpd->mpd_model) 633 return mpd; 634 } 635 return NULL; 636 } 637 638 /* 639 * Return the flow control status flag from MII_ANAR & MII_ANLPAR. 640 */ 641 u_int 642 mii_phy_flowstatus(struct mii_softc *sc) 643 { 644 uint16_t anar, anlpar; 645 646 if ((sc->mii_flags & MIIF_DOPAUSE) == 0) 647 return 0; 648 649 PHY_READ(sc, MII_ANAR, &anar); 650 PHY_READ(sc, MII_ANLPAR, &anlpar); 651 652 /* For 1000baseX, the bits are in a different location. */ 653 if (sc->mii_flags & MIIF_IS_1000X) { 654 anar <<= 3; 655 anlpar <<= 3; 656 } 657 658 if ((anar & ANAR_PAUSE_SYM) & (anlpar & ANLPAR_PAUSE_SYM)) 659 return (IFM_FLOW | IFM_ETH_TXPAUSE | IFM_ETH_RXPAUSE); 660 661 if ((anar & ANAR_PAUSE_SYM) == 0) { 662 if ((anar & ANAR_PAUSE_ASYM) && 663 ((anlpar & ANLPAR_PAUSE_TOWARDS) == ANLPAR_PAUSE_TOWARDS)) 664 return (IFM_FLOW | IFM_ETH_TXPAUSE); 665 else 666 return 0; 667 } 668 669 if ((anar & ANAR_PAUSE_ASYM) == 0) { 670 if (anlpar & ANLPAR_PAUSE_SYM) 671 return (IFM_FLOW | IFM_ETH_TXPAUSE | IFM_ETH_RXPAUSE); 672 else 673 return 0; 674 } 675 676 switch ((anlpar & ANLPAR_PAUSE_TOWARDS)) { 677 case ANLPAR_PAUSE_NONE: 678 return 0; 679 680 case ANLPAR_PAUSE_ASYM: 681 return (IFM_FLOW | IFM_ETH_RXPAUSE); 682 683 default: 684 return (IFM_FLOW | IFM_ETH_RXPAUSE | IFM_ETH_TXPAUSE); 685 } 686 /* NOTREACHED */ 687 } 688 689 bool 690 mii_phy_resume(device_t dv, const pmf_qual_t *qual) 691 { 692 struct mii_softc *sc = device_private(dv); 693 694 PHY_RESET(sc); 695 return PHY_SERVICE(sc, sc->mii_pdata, MII_MEDIACHG) == 0; 696 } 697 698 699 /* 700 * Given an ifmedia word, return the corresponding ANAR value. 701 */ 702 int 703 mii_anar(int media) 704 { 705 int rv; 706 707 #ifdef DIAGNOSTIC 708 if (/* media < 0 || */ media >= MII_NMEDIA) 709 panic("mii_anar"); 710 #endif 711 712 rv = mii_media_table[media].mm_anar; 713 714 return rv; 715 } 716
Indexes created Tue Sep 30 10:09:55 GMT 2025