mii_physubr.c revision 221407
1/* $NetBSD: mii_physubr.c,v 1.5 1999/08/03 19:41:49 drochner 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#include <sys/cdefs.h> 34__FBSDID("$FreeBSD: head/sys/dev/mii/mii_physubr.c 221407 2011-05-03 19:51:29Z marius $"); 35 36/* 37 * Subroutines common to all PHYs. 38 */ 39 40#include <sys/param.h> 41#include <sys/systm.h> 42#include <sys/kernel.h> 43#include <sys/socket.h> 44#include <sys/errno.h> 45#include <sys/module.h> 46#include <sys/bus.h> 47 48#include <net/if.h> 49#include <net/if_media.h> 50 51#include <dev/mii/mii.h> 52#include <dev/mii/miivar.h> 53 54#include "miibus_if.h" 55 56/* 57 * Media to register setting conversion table. Order matters. 58 */ 59static const struct mii_media mii_media_table[MII_NMEDIA] = { 60 /* None */ 61 { BMCR_ISO, ANAR_CSMA, 62 0, }, 63 64 /* 10baseT */ 65 { BMCR_S10, ANAR_CSMA|ANAR_10, 66 0, }, 67 68 /* 10baseT-FDX */ 69 { BMCR_S10|BMCR_FDX, ANAR_CSMA|ANAR_10_FD, 70 0, }, 71 72 /* 100baseT4 */ 73 { BMCR_S100, ANAR_CSMA|ANAR_T4, 74 0, }, 75 76 /* 100baseTX */ 77 { BMCR_S100, ANAR_CSMA|ANAR_TX, 78 0, }, 79 80 /* 100baseTX-FDX */ 81 { BMCR_S100|BMCR_FDX, ANAR_CSMA|ANAR_TX_FD, 82 0, }, 83 84 /* 1000baseX */ 85 { BMCR_S1000, ANAR_CSMA, 86 0, }, 87 88 /* 1000baseX-FDX */ 89 { BMCR_S1000|BMCR_FDX, ANAR_CSMA, 90 0, }, 91 92 /* 1000baseT */ 93 { BMCR_S1000, ANAR_CSMA, 94 GTCR_ADV_1000THDX }, 95 96 /* 1000baseT-FDX */ 97 { BMCR_S1000, ANAR_CSMA, 98 GTCR_ADV_1000TFDX }, 99}; 100 101void 102mii_phy_setmedia(struct mii_softc *sc) 103{ 104 struct mii_data *mii = sc->mii_pdata; 105 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 106 int bmcr, anar, gtcr; 107 108 if (IFM_SUBTYPE(ife->ifm_media) == IFM_AUTO) { 109 /* 110 * Force renegotiation if MIIF_DOPAUSE or MIIF_FORCEANEG. 111 * The former is necessary as we might switch from flow- 112 * control advertisement being off to on or vice versa. 113 */ 114 if ((PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) == 0 || 115 (sc->mii_flags & (MIIF_DOPAUSE | MIIF_FORCEANEG)) != 0) 116 (void)mii_phy_auto(sc); 117 return; 118 } 119 120 /* 121 * Table index is stored in the media entry. 122 */ 123 124 KASSERT(ife->ifm_data >=0 && ife->ifm_data < MII_NMEDIA, 125 ("invalid ife->ifm_data (0x%x) in mii_phy_setmedia", 126 ife->ifm_data)); 127 128 anar = mii_media_table[ife->ifm_data].mm_anar; 129 bmcr = mii_media_table[ife->ifm_data].mm_bmcr; 130 gtcr = mii_media_table[ife->ifm_data].mm_gtcr; 131 132 if (IFM_SUBTYPE(ife->ifm_media) == IFM_1000_T) { 133 gtcr |= GTCR_MAN_MS; 134 if ((ife->ifm_media & IFM_ETH_MASTER) != 0) 135 gtcr |= GTCR_ADV_MS; 136 } 137 138 if ((ife->ifm_media & IFM_FDX) != 0 && 139 ((ife->ifm_media & IFM_FLOW) != 0 || 140 (sc->mii_flags & MIIF_FORCEPAUSE) != 0)) { 141 if ((sc->mii_flags & MIIF_IS_1000X) != 0) 142 anar |= ANAR_X_PAUSE_TOWARDS; 143 else { 144 anar |= ANAR_FC; 145 /* XXX Only 1000BASE-T has PAUSE_ASYM? */ 146 if ((sc->mii_flags & MIIF_HAVE_GTCR) != 0 && 147 (sc->mii_extcapabilities & 148 (EXTSR_1000THDX | EXTSR_1000TFDX)) != 0) 149 anar |= ANAR_X_PAUSE_ASYM; 150 } 151 } 152 153 PHY_WRITE(sc, MII_ANAR, anar); 154 PHY_WRITE(sc, MII_BMCR, bmcr); 155 if ((sc->mii_flags & MIIF_HAVE_GTCR) != 0) 156 PHY_WRITE(sc, MII_100T2CR, gtcr); 157} 158 159int 160mii_phy_auto(struct mii_softc *sc) 161{ 162 struct ifmedia_entry *ife = sc->mii_pdata->mii_media.ifm_cur; 163 int anar, gtcr; 164 165 /* 166 * Check for 1000BASE-X. Autonegotiation is a bit 167 * different on such devices. 168 */ 169 if ((sc->mii_flags & MIIF_IS_1000X) != 0) { 170 anar = 0; 171 if ((sc->mii_extcapabilities & EXTSR_1000XFDX) != 0) 172 anar |= ANAR_X_FD; 173 if ((sc->mii_extcapabilities & EXTSR_1000XHDX) != 0) 174 anar |= ANAR_X_HD; 175 176 if ((ife->ifm_media & IFM_FLOW) != 0 || 177 (sc->mii_flags & MIIF_FORCEPAUSE) != 0) 178 anar |= ANAR_X_PAUSE_TOWARDS; 179 PHY_WRITE(sc, MII_ANAR, anar); 180 } else { 181 anar = BMSR_MEDIA_TO_ANAR(sc->mii_capabilities) | 182 ANAR_CSMA; 183 if ((ife->ifm_media & IFM_FLOW) != 0 || 184 (sc->mii_flags & MIIF_FORCEPAUSE) != 0) { 185 if ((sc->mii_capabilities & 186 (BMSR_10TFDX | BMSR_100TXFDX)) != 0) 187 anar |= ANAR_FC; 188 /* XXX Only 1000BASE-T has PAUSE_ASYM? */ 189 if (((sc->mii_flags & MIIF_HAVE_GTCR) != 0) && 190 (sc->mii_extcapabilities & 191 (EXTSR_1000THDX | EXTSR_1000TFDX)) != 0) 192 anar |= ANAR_X_PAUSE_ASYM; 193 } 194 PHY_WRITE(sc, MII_ANAR, anar); 195 if ((sc->mii_flags & MIIF_HAVE_GTCR) != 0) { 196 gtcr = 0; 197 if ((sc->mii_extcapabilities & EXTSR_1000TFDX) != 0) 198 gtcr |= GTCR_ADV_1000TFDX; 199 if ((sc->mii_extcapabilities & EXTSR_1000THDX) != 0) 200 gtcr |= GTCR_ADV_1000THDX; 201 PHY_WRITE(sc, MII_100T2CR, gtcr); 202 } 203 } 204 PHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN | BMCR_STARTNEG); 205 return (EJUSTRETURN); 206} 207 208int 209mii_phy_tick(struct mii_softc *sc) 210{ 211 struct ifmedia_entry *ife = sc->mii_pdata->mii_media.ifm_cur; 212 struct ifnet *ifp = sc->mii_pdata->mii_ifp; 213 int reg; 214 215 /* Just bail now if the interface is down. */ 216 if ((ifp->if_flags & IFF_UP) == 0) 217 return (EJUSTRETURN); 218 219 /* 220 * If we're not doing autonegotiation, we don't need to do 221 * any extra work here. However, we need to check the link 222 * status so we can generate an announcement if the status 223 * changes. 224 */ 225 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) { 226 sc->mii_ticks = 0; /* reset autonegotiation timer. */ 227 return (0); 228 } 229 230 /* Read the status register twice; BMSR_LINK is latch-low. */ 231 reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 232 if ((reg & BMSR_LINK) != 0) { 233 sc->mii_ticks = 0; /* reset autonegotiation timer. */ 234 /* See above. */ 235 return (0); 236 } 237 238 /* Announce link loss right after it happens */ 239 if (sc->mii_ticks++ == 0) 240 return (0); 241 242 /* XXX: use default value if phy driver did not set mii_anegticks */ 243 if (sc->mii_anegticks == 0) 244 sc->mii_anegticks = MII_ANEGTICKS_GIGE; 245 246 /* Only retry autonegotiation every mii_anegticks ticks. */ 247 if (sc->mii_ticks <= sc->mii_anegticks) 248 return (EJUSTRETURN); 249 250 sc->mii_ticks = 0; 251 PHY_RESET(sc); 252 mii_phy_auto(sc); 253 return (0); 254} 255 256void 257mii_phy_reset(struct mii_softc *sc) 258{ 259 struct ifmedia_entry *ife = sc->mii_pdata->mii_media.ifm_cur; 260 int reg, i; 261 262 if ((sc->mii_flags & MIIF_NOISOLATE) != 0) 263 reg = BMCR_RESET; 264 else 265 reg = BMCR_RESET | BMCR_ISO; 266 PHY_WRITE(sc, MII_BMCR, reg); 267 268 /* Wait 100ms for it to complete. */ 269 for (i = 0; i < 100; i++) { 270 reg = PHY_READ(sc, MII_BMCR); 271 if ((reg & BMCR_RESET) == 0) 272 break; 273 DELAY(1000); 274 } 275 276 if ((sc->mii_flags & MIIF_NOISOLATE) == 0) { 277 if ((ife == NULL && sc->mii_inst != 0) || 278 (ife != NULL && IFM_INST(ife->ifm_media) != sc->mii_inst)) 279 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 280 } 281} 282 283void 284mii_phy_down(struct mii_softc *sc) 285{ 286 287} 288 289void 290mii_phy_update(struct mii_softc *sc, int cmd) 291{ 292 struct mii_data *mii = sc->mii_pdata; 293 294 if (sc->mii_media_active != mii->mii_media_active || 295 cmd == MII_MEDIACHG) { 296 MIIBUS_STATCHG(sc->mii_dev); 297 sc->mii_media_active = mii->mii_media_active; 298 } 299 if (sc->mii_media_status != mii->mii_media_status) { 300 MIIBUS_LINKCHG(sc->mii_dev); 301 sc->mii_media_status = mii->mii_media_status; 302 } 303} 304 305/* 306 * Initialize generic PHY media based on BMSR, called when a PHY is 307 * attached. We expect to be set up to print a comma-separated list 308 * of media names. Does not print a newline. 309 */ 310void 311mii_phy_add_media(struct mii_softc *sc) 312{ 313 struct mii_data *mii = sc->mii_pdata; 314 const char *sep = ""; 315 int fdx = 0; 316 317 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 && 318 (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0) { 319 printf("no media present"); 320 return; 321 } 322 323 /* 324 * Set the autonegotiation timer for 10/100 media. Gigabit media is 325 * handled below. 326 */ 327 sc->mii_anegticks = MII_ANEGTICKS; 328 329#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 330#define PRINT(s) printf("%s%s", sep, s); sep = ", " 331 332 if ((sc->mii_flags & MIIF_NOISOLATE) == 0) { 333 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 334 MII_MEDIA_NONE); 335 PRINT("none"); 336 } 337 338 /* 339 * There are different interpretations for the bits in 340 * HomePNA PHYs. And there is really only one media type 341 * that is supported. 342 */ 343 if ((sc->mii_flags & MIIF_IS_HPNA) != 0) { 344 if ((sc->mii_capabilities & BMSR_10THDX) != 0) { 345 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_HPNA_1, 0, 346 sc->mii_inst), MII_MEDIA_10_T); 347 PRINT("HomePNA1"); 348 } 349 return; 350 } 351 352 if ((sc->mii_capabilities & BMSR_10THDX) != 0) { 353 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, sc->mii_inst), 354 MII_MEDIA_10_T); 355 PRINT("10baseT"); 356 } 357 if ((sc->mii_capabilities & BMSR_10TFDX) != 0) { 358 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_FDX, sc->mii_inst), 359 MII_MEDIA_10_T_FDX); 360 PRINT("10baseT-FDX"); 361 if ((sc->mii_flags & MIIF_DOPAUSE) != 0 && 362 (sc->mii_flags & MIIF_NOMANPAUSE) == 0) { 363 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 364 IFM_FDX | IFM_FLOW, sc->mii_inst), 365 MII_MEDIA_10_T_FDX); 366 PRINT("10baseT-FDX-flow"); 367 } 368 fdx = 1; 369 } 370 if ((sc->mii_capabilities & BMSR_100TXHDX) != 0) { 371 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, 0, sc->mii_inst), 372 MII_MEDIA_100_TX); 373 PRINT("100baseTX"); 374 } 375 if ((sc->mii_capabilities & BMSR_100TXFDX) != 0) { 376 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_FDX, sc->mii_inst), 377 MII_MEDIA_100_TX_FDX); 378 PRINT("100baseTX-FDX"); 379 if ((sc->mii_flags & MIIF_DOPAUSE) != 0 && 380 (sc->mii_flags & MIIF_NOMANPAUSE) == 0) { 381 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, 382 IFM_FDX | IFM_FLOW, sc->mii_inst), 383 MII_MEDIA_100_TX_FDX); 384 PRINT("100baseTX-FDX-flow"); 385 } 386 fdx = 1; 387 } 388 if ((sc->mii_capabilities & BMSR_100T4) != 0) { 389 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_T4, 0, sc->mii_inst), 390 MII_MEDIA_100_T4); 391 PRINT("100baseT4"); 392 } 393 394 if ((sc->mii_extcapabilities & EXTSR_MEDIAMASK) != 0) { 395 /* 396 * XXX Right now only handle 1000SX and 1000TX. Need 397 * XXX to handle 1000LX and 1000CX somehow. 398 */ 399 if ((sc->mii_extcapabilities & EXTSR_1000XHDX) != 0) { 400 sc->mii_anegticks = MII_ANEGTICKS_GIGE; 401 sc->mii_flags |= MIIF_IS_1000X; 402 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0, 403 sc->mii_inst), MII_MEDIA_1000_X); 404 PRINT("1000baseSX"); 405 } 406 if ((sc->mii_extcapabilities & EXTSR_1000XFDX) != 0) { 407 sc->mii_anegticks = MII_ANEGTICKS_GIGE; 408 sc->mii_flags |= MIIF_IS_1000X; 409 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX, 410 sc->mii_inst), MII_MEDIA_1000_X_FDX); 411 PRINT("1000baseSX-FDX"); 412 if ((sc->mii_flags & MIIF_DOPAUSE) != 0 && 413 (sc->mii_flags & MIIF_NOMANPAUSE) == 0) { 414 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 415 IFM_FDX | IFM_FLOW, sc->mii_inst), 416 MII_MEDIA_1000_X_FDX); 417 PRINT("1000baseSX-FDX-flow"); 418 } 419 fdx = 1; 420 } 421 422 /* 423 * 1000baseT media needs to be able to manipulate 424 * master/slave mode. 425 * 426 * All 1000baseT PHYs have a 1000baseT control register. 427 */ 428 if ((sc->mii_extcapabilities & EXTSR_1000THDX) != 0) { 429 sc->mii_anegticks = MII_ANEGTICKS_GIGE; 430 sc->mii_flags |= MIIF_HAVE_GTCR; 431 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, 0, 432 sc->mii_inst), MII_MEDIA_1000_T); 433 PRINT("1000baseT"); 434 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, 435 IFM_ETH_MASTER, sc->mii_inst), MII_MEDIA_1000_T); 436 PRINT("1000baseT-master"); 437 } 438 if ((sc->mii_extcapabilities & EXTSR_1000TFDX) != 0) { 439 sc->mii_anegticks = MII_ANEGTICKS_GIGE; 440 sc->mii_flags |= MIIF_HAVE_GTCR; 441 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, IFM_FDX, 442 sc->mii_inst), MII_MEDIA_1000_T_FDX); 443 PRINT("1000baseT-FDX"); 444 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, 445 IFM_FDX | IFM_ETH_MASTER, sc->mii_inst), 446 MII_MEDIA_1000_T_FDX); 447 PRINT("1000baseT-FDX-master"); 448 if ((sc->mii_flags & MIIF_DOPAUSE) != 0 && 449 (sc->mii_flags & MIIF_NOMANPAUSE) == 0) { 450 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, 451 IFM_FDX | IFM_FLOW, sc->mii_inst), 452 MII_MEDIA_1000_T_FDX); 453 PRINT("1000baseT-FDX-flow"); 454 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, 455 IFM_FDX | IFM_FLOW | IFM_ETH_MASTER, 456 sc->mii_inst), MII_MEDIA_1000_T_FDX); 457 PRINT("1000baseT-FDX-flow-master"); 458 } 459 fdx = 1; 460 } 461 } 462 463 if ((sc->mii_capabilities & BMSR_ANEG) != 0) { 464 /* intentionally invalid index */ 465 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 466 MII_NMEDIA); 467 PRINT("auto"); 468 if (fdx != 0 && (sc->mii_flags & MIIF_DOPAUSE) != 0) { 469 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, IFM_FLOW, 470 sc->mii_inst), MII_NMEDIA); 471 PRINT("auto-flow"); 472 } 473 } 474#undef ADD 475#undef PRINT 476} 477 478int 479mii_phy_detach(device_t dev) 480{ 481 struct mii_softc *sc; 482 483 sc = device_get_softc(dev); 484 mii_phy_down(sc); 485 sc->mii_dev = NULL; 486 LIST_REMOVE(sc, mii_list); 487 return (0); 488} 489 490const struct mii_phydesc * 491mii_phy_match_gen(const struct mii_attach_args *ma, 492 const struct mii_phydesc *mpd, size_t len) 493{ 494 495 for (; mpd->mpd_name != NULL; 496 mpd = (const struct mii_phydesc *)((const char *)mpd + len)) { 497 if (MII_OUI(ma->mii_id1, ma->mii_id2) == mpd->mpd_oui && 498 MII_MODEL(ma->mii_id2) == mpd->mpd_model) 499 return (mpd); 500 } 501 return (NULL); 502} 503 504const struct mii_phydesc * 505mii_phy_match(const struct mii_attach_args *ma, const struct mii_phydesc *mpd) 506{ 507 508 return (mii_phy_match_gen(ma, mpd, sizeof(struct mii_phydesc))); 509} 510 511int 512mii_phy_dev_probe(device_t dev, const struct mii_phydesc *mpd, int mrv) 513{ 514 515 mpd = mii_phy_match(device_get_ivars(dev), mpd); 516 if (mpd != NULL) { 517 device_set_desc(dev, mpd->mpd_name); 518 return (mrv); 519 } 520 return (ENXIO); 521} 522 523void 524mii_phy_dev_attach(device_t dev, u_int flags, const struct mii_phy_funcs *mpf, 525 int add_media) 526{ 527 struct mii_softc *sc; 528 struct mii_attach_args *ma; 529 struct mii_data *mii; 530 531 sc = device_get_softc(dev); 532 ma = device_get_ivars(dev); 533 sc->mii_dev = device_get_parent(dev); 534 mii = ma->mii_data; 535 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 536 537 sc->mii_flags = flags | miibus_get_flags(dev); 538 sc->mii_mpd_oui = MII_OUI(ma->mii_id1, ma->mii_id2); 539 sc->mii_mpd_model = MII_MODEL(ma->mii_id2); 540 sc->mii_mpd_rev = MII_REV(ma->mii_id2); 541 sc->mii_capmask = ma->mii_capmask; 542 sc->mii_inst = mii->mii_instance++; 543 sc->mii_phy = ma->mii_phyno; 544 sc->mii_offset = ma->mii_offset; 545 sc->mii_funcs = mpf; 546 sc->mii_pdata = mii; 547 548 if (bootverbose) 549 device_printf(dev, "OUI 0x%06x, model 0x%04x, rev. %d\n", 550 sc->mii_mpd_oui, sc->mii_mpd_model, sc->mii_mpd_rev); 551 552 if (add_media == 0) 553 return; 554 555 PHY_RESET(sc); 556 557 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & sc->mii_capmask; 558 if (sc->mii_capabilities & BMSR_EXTSTAT) 559 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 560 device_printf(dev, " "); 561 mii_phy_add_media(sc); 562 printf("\n"); 563 564 MIIBUS_MEDIAINIT(sc->mii_dev); 565} 566 567/* 568 * Return the flow control status flag from MII_ANAR & MII_ANLPAR. 569 */ 570u_int 571mii_phy_flowstatus(struct mii_softc *sc) 572{ 573 int anar, anlpar; 574 575 if ((sc->mii_flags & MIIF_DOPAUSE) == 0) 576 return (0); 577 578 anar = PHY_READ(sc, MII_ANAR); 579 anlpar = PHY_READ(sc, MII_ANLPAR); 580 581 /* 582 * Check for 1000BASE-X. Autonegotiation is a bit 583 * different on such devices. 584 */ 585 if ((sc->mii_flags & MIIF_IS_1000X) != 0) { 586 anar <<= 3; 587 anlpar <<= 3; 588 } 589 590 if ((anar & ANAR_PAUSE_SYM) != 0 && (anlpar & ANLPAR_PAUSE_SYM) != 0) 591 return (IFM_FLOW | IFM_ETH_TXPAUSE | IFM_ETH_RXPAUSE); 592 593 if ((anar & ANAR_PAUSE_SYM) == 0) { 594 if ((anar & ANAR_PAUSE_ASYM) != 0 && 595 (anlpar & ANLPAR_PAUSE_TOWARDS) != 0) 596 return (IFM_FLOW | IFM_ETH_TXPAUSE); 597 else 598 return (0); 599 } 600 601 if ((anar & ANAR_PAUSE_ASYM) == 0) { 602 if ((anlpar & ANLPAR_PAUSE_SYM) != 0) 603 return (IFM_FLOW | IFM_ETH_TXPAUSE | IFM_ETH_RXPAUSE); 604 else 605 return (0); 606 } 607 608 switch ((anlpar & ANLPAR_PAUSE_TOWARDS)) { 609 case ANLPAR_PAUSE_NONE: 610 return (0); 611 case ANLPAR_PAUSE_ASYM: 612 return (IFM_FLOW | IFM_ETH_RXPAUSE); 613 default: 614 return (IFM_FLOW | IFM_ETH_RXPAUSE | IFM_ETH_TXPAUSE); 615 } 616 /* NOTREACHED */ 617} 618