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>
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34__FBSDID("$FreeBSD: head/sys/dev/mii/mii_physubr.c 204646 2010-03-03 17:55:51Z joel $");
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34__FBSDID("$FreeBSD: head/sys/dev/mii/mii_physubr.c 213229 2010-09-27 20:31:03Z 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 */ 59const 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 if ((PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) == 0 || 110 (sc->mii_flags & MIIF_FORCEANEG)) 111 (void) mii_phy_auto(sc); 112 return; 113 } 114 115 /* 116 * Table index is stored in the media entry. 117 */ 118 119 KASSERT(ife->ifm_data >=0 && ife->ifm_data < MII_NMEDIA, 120 ("invalid ife->ifm_data (0x%x) in mii_phy_setmedia", 121 ife->ifm_data)); 122 123 anar = mii_media_table[ife->ifm_data].mm_anar; 124 bmcr = mii_media_table[ife->ifm_data].mm_bmcr; 125 gtcr = mii_media_table[ife->ifm_data].mm_gtcr; 126 127 if (mii->mii_media.ifm_media & IFM_ETH_MASTER) { 128 switch (IFM_SUBTYPE(ife->ifm_media)) { 129 case IFM_1000_T: 130 gtcr |= GTCR_MAN_MS|GTCR_ADV_MS; 131 break; 132 133 default: 134 panic("mii_phy_setmedia: MASTER on wrong media"); 135 } 136 } 137 138 if (ife->ifm_media & IFM_LOOP) 139 bmcr |= BMCR_LOOP; 140 141 PHY_WRITE(sc, MII_ANAR, anar); 142 PHY_WRITE(sc, MII_BMCR, bmcr); 143 if (sc->mii_flags & MIIF_HAVE_GTCR) 144 PHY_WRITE(sc, MII_100T2CR, gtcr); 145} 146 147int 148mii_phy_auto(struct mii_softc *sc) 149{ 150 151 /* 152 * Check for 1000BASE-X. Autonegotiation is a bit 153 * different on such devices. 154 */ 155 if (sc->mii_flags & MIIF_IS_1000X) { 156 uint16_t anar = 0; 157 158 if (sc->mii_extcapabilities & EXTSR_1000XFDX) 159 anar |= ANAR_X_FD; 160 if (sc->mii_extcapabilities & EXTSR_1000XHDX) 161 anar |= ANAR_X_HD; 162 163 if (sc->mii_flags & MIIF_DOPAUSE) { 164 /* XXX Asymmetric vs. symmetric? */ 165 anar |= ANLPAR_X_PAUSE_TOWARDS; 166 } 167 168 PHY_WRITE(sc, MII_ANAR, anar); 169 } else { 170 uint16_t anar; 171 172 anar = BMSR_MEDIA_TO_ANAR(sc->mii_capabilities) | 173 ANAR_CSMA; 174 if (sc->mii_flags & MIIF_DOPAUSE) 175 anar |= ANAR_FC; 176 PHY_WRITE(sc, MII_ANAR, anar); 177 if (sc->mii_flags & MIIF_HAVE_GTCR) { 178 uint16_t gtcr = 0; 179 180 if (sc->mii_extcapabilities & EXTSR_1000TFDX) 181 gtcr |= GTCR_ADV_1000TFDX; 182 if (sc->mii_extcapabilities & EXTSR_1000THDX) 183 gtcr |= GTCR_ADV_1000THDX; 184 185 PHY_WRITE(sc, MII_100T2CR, gtcr); 186 } 187 } 188 PHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN | BMCR_STARTNEG); 189 return (EJUSTRETURN); 190} 191 192int 193mii_phy_tick(struct mii_softc *sc) 194{ 195 struct ifmedia_entry *ife = sc->mii_pdata->mii_media.ifm_cur; 196 struct ifnet *ifp = sc->mii_pdata->mii_ifp; 197 int reg; 198 199 /* Just bail now if the interface is down. */ 200 if ((ifp->if_flags & IFF_UP) == 0) 201 return (EJUSTRETURN); 202 203 /* 204 * If we're not doing autonegotiation, we don't need to do 205 * any extra work here. However, we need to check the link 206 * status so we can generate an announcement if the status 207 * changes. 208 */ 209 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) { 210 sc->mii_ticks = 0; /* reset autonegotiation timer. */ 211 return (0); 212 } 213 214 /* Read the status register twice; BMSR_LINK is latch-low. */ 215 reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 216 if (reg & BMSR_LINK) { 217 sc->mii_ticks = 0; /* reset autonegotiation timer. */ 218 /* See above. */ 219 return (0); 220 } 221 222 /* Announce link loss right after it happens */ 223 if (sc->mii_ticks++ == 0) 224 return (0); 225 226 /* XXX: use default value if phy driver did not set mii_anegticks */ 227 if (sc->mii_anegticks == 0) 228 sc->mii_anegticks = MII_ANEGTICKS_GIGE; 229 230 /* Only retry autonegotiation every mii_anegticks ticks. */ 231 if (sc->mii_ticks <= sc->mii_anegticks) 232 return (EJUSTRETURN); 233 234 sc->mii_ticks = 0; 235 mii_phy_reset(sc); 236 mii_phy_auto(sc); 237 return (0); 238} 239 240void 241mii_phy_reset(struct mii_softc *sc) 242{ 243 struct ifmedia_entry *ife = sc->mii_pdata->mii_media.ifm_cur; 244 int reg, i; 245 246 if (sc->mii_flags & MIIF_NOISOLATE) 247 reg = BMCR_RESET; 248 else 249 reg = BMCR_RESET | BMCR_ISO; 250 PHY_WRITE(sc, MII_BMCR, reg); 251 252 /* Wait 100ms for it to complete. */ 253 for (i = 0; i < 100; i++) { 254 reg = PHY_READ(sc, MII_BMCR); 255 if ((reg & BMCR_RESET) == 0) 256 break; 257 DELAY(1000); 258 } 259 260 if ((sc->mii_flags & MIIF_NOISOLATE) == 0) { 261 if ((ife == NULL && sc->mii_inst != 0) || 262 (ife != NULL && IFM_INST(ife->ifm_media) != sc->mii_inst)) 263 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 264 } 265} 266 267void 268mii_phy_down(struct mii_softc *sc) 269{ 270 271} 272 273void 274mii_phy_update(struct mii_softc *sc, int cmd) 275{ 276 struct mii_data *mii = sc->mii_pdata; 277 278 if (sc->mii_media_active != mii->mii_media_active || 279 cmd == MII_MEDIACHG) { 280 MIIBUS_STATCHG(sc->mii_dev); 281 sc->mii_media_active = mii->mii_media_active; 282 } 283 if (sc->mii_media_status != mii->mii_media_status) { 284 MIIBUS_LINKCHG(sc->mii_dev); 285 sc->mii_media_status = mii->mii_media_status; 286 } 287} 288 289/* 290 * Given an ifmedia word, return the corresponding ANAR value. 291 */ 292int 293mii_anar(int media) 294{ 295 int rv; 296 297 switch (media & (IFM_TMASK|IFM_NMASK|IFM_FDX)) { 298 case IFM_ETHER|IFM_10_T: 299 rv = ANAR_10|ANAR_CSMA; 300 break; 301 case IFM_ETHER|IFM_10_T|IFM_FDX: 302 rv = ANAR_10_FD|ANAR_CSMA; 303 break; 304 case IFM_ETHER|IFM_100_TX: 305 rv = ANAR_TX|ANAR_CSMA; 306 break; 307 case IFM_ETHER|IFM_100_TX|IFM_FDX: 308 rv = ANAR_TX_FD|ANAR_CSMA; 309 break; 310 case IFM_ETHER|IFM_100_T4: 311 rv = ANAR_T4|ANAR_CSMA; 312 break; 313 default: 314 rv = 0; 315 break; 316 } 317 318 return (rv); 319} 320 321/* 322 * Initialize generic PHY media based on BMSR, called when a PHY is 323 * attached. We expect to be set up to print a comma-separated list 324 * of media names. Does not print a newline. 325 */ 326void 327mii_add_media(struct mii_softc *sc) 328{
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329 struct mii_data *mii = sc->mii_pdata; |
330 const char *sep = "";
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330 struct mii_data *mii;
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331
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332 mii = device_get_softc(sc->mii_dev);
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332 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) { 333 printf("no media present"); 334 return; 335 } 336 337#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 338#define PRINT(s) printf("%s%s", sep, s); sep = ", " 339 340 if (sc->mii_capabilities & BMSR_10THDX) { 341 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, sc->mii_inst), 0); 342 PRINT("10baseT"); 343 } 344 if (sc->mii_capabilities & BMSR_10TFDX) { 345 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_FDX, sc->mii_inst), 346 BMCR_FDX); 347 PRINT("10baseT-FDX"); 348 } 349 if (sc->mii_capabilities & BMSR_100TXHDX) { 350 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, 0, sc->mii_inst), 351 BMCR_S100); 352 PRINT("100baseTX"); 353 } 354 if (sc->mii_capabilities & BMSR_100TXFDX) { 355 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_FDX, sc->mii_inst), 356 BMCR_S100|BMCR_FDX); 357 PRINT("100baseTX-FDX"); 358 } 359 if (sc->mii_capabilities & BMSR_100T4) { 360 /* 361 * XXX How do you enable 100baseT4? I assume we set 362 * XXX BMCR_S100 and then assume the PHYs will take 363 * XXX watever action is necessary to switch themselves 364 * XXX into T4 mode. 365 */ 366 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_T4, 0, sc->mii_inst), 367 BMCR_S100); 368 PRINT("100baseT4"); 369 } 370 if (sc->mii_capabilities & BMSR_ANEG) { 371 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 372 BMCR_AUTOEN); 373 PRINT("auto"); 374 } 375 376 377 378#undef ADD 379#undef PRINT 380} 381 382/* 383 * Initialize generic PHY media based on BMSR, called when a PHY is 384 * attached. We expect to be set up to print a comma-separated list 385 * of media names. Does not print a newline. 386 */ 387void 388mii_phy_add_media(struct mii_softc *sc) 389{ 390 struct mii_data *mii = sc->mii_pdata; 391 const char *sep = ""; 392 393 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 && 394 (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0) { 395 printf("no media present"); 396 return; 397 } 398 399 /* Set aneg timer for 10/100 media. Gigabit media handled below. */ 400 sc->mii_anegticks = MII_ANEGTICKS; 401 402#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 403#define PRINT(s) printf("%s%s", sep, s); sep = ", " 404 405 if ((sc->mii_flags & MIIF_NOISOLATE) == 0) 406 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 407 MII_MEDIA_NONE); 408 409 /* 410 * There are different interpretations for the bits in 411 * HomePNA PHYs. And there is really only one media type 412 * that is supported. 413 */ 414 if (sc->mii_flags & MIIF_IS_HPNA) { 415 if (sc->mii_capabilities & BMSR_10THDX) { 416 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_HPNA_1, 0, 417 sc->mii_inst), 418 MII_MEDIA_10_T); 419 PRINT("HomePNA1"); 420 } 421 return; 422 } 423 424 if (sc->mii_capabilities & BMSR_10THDX) { 425 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, sc->mii_inst), 426 MII_MEDIA_10_T); 427 PRINT("10baseT"); 428 } 429 if (sc->mii_capabilities & BMSR_10TFDX) { 430 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_FDX, sc->mii_inst), 431 MII_MEDIA_10_T_FDX); 432 PRINT("10baseT-FDX"); 433 } 434 if (sc->mii_capabilities & BMSR_100TXHDX) { 435 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, 0, sc->mii_inst), 436 MII_MEDIA_100_TX); 437 PRINT("100baseTX"); 438 } 439 if (sc->mii_capabilities & BMSR_100TXFDX) { 440 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_FDX, sc->mii_inst), 441 MII_MEDIA_100_TX_FDX); 442 PRINT("100baseTX-FDX"); 443 } 444 if (sc->mii_capabilities & BMSR_100T4) { 445 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_T4, 0, sc->mii_inst), 446 MII_MEDIA_100_T4); 447 PRINT("100baseT4"); 448 } 449 450 if (sc->mii_extcapabilities & EXTSR_MEDIAMASK) { 451 /* 452 * XXX Right now only handle 1000SX and 1000TX. Need 453 * XXX to handle 1000LX and 1000CX some how. 454 */ 455 if (sc->mii_extcapabilities & EXTSR_1000XHDX) { 456 sc->mii_anegticks = MII_ANEGTICKS_GIGE; 457 sc->mii_flags |= MIIF_IS_1000X; 458 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0, 459 sc->mii_inst), MII_MEDIA_1000_X); 460 PRINT("1000baseSX"); 461 } 462 if (sc->mii_extcapabilities & EXTSR_1000XFDX) { 463 sc->mii_anegticks = MII_ANEGTICKS_GIGE; 464 sc->mii_flags |= MIIF_IS_1000X; 465 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX, 466 sc->mii_inst), MII_MEDIA_1000_X_FDX); 467 PRINT("1000baseSX-FDX"); 468 } 469 470 /* 471 * 1000baseT media needs to be able to manipulate 472 * master/slave mode. We set IFM_ETH_MASTER in 473 * the "don't care mask" and filter it out when 474 * the media is set. 475 * 476 * All 1000baseT PHYs have a 1000baseT control register. 477 */ 478 if (sc->mii_extcapabilities & EXTSR_1000THDX) { 479 sc->mii_anegticks = MII_ANEGTICKS_GIGE; 480 sc->mii_flags |= MIIF_HAVE_GTCR; 481 mii->mii_media.ifm_mask |= IFM_ETH_MASTER; 482 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, 0, 483 sc->mii_inst), MII_MEDIA_1000_T); 484 PRINT("1000baseT"); 485 } 486 if (sc->mii_extcapabilities & EXTSR_1000TFDX) { 487 sc->mii_anegticks = MII_ANEGTICKS_GIGE; 488 sc->mii_flags |= MIIF_HAVE_GTCR; 489 mii->mii_media.ifm_mask |= IFM_ETH_MASTER; 490 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, IFM_FDX, 491 sc->mii_inst), MII_MEDIA_1000_T_FDX); 492 PRINT("1000baseT-FDX"); 493 } 494 } 495 496 if (sc->mii_capabilities & BMSR_ANEG) { 497 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 498 MII_NMEDIA); /* intentionally invalid index */ 499 PRINT("auto"); 500 } 501#undef ADD 502#undef PRINT 503} 504 505int 506mii_phy_detach(device_t dev) 507{ 508 struct mii_softc *sc; 509 510 sc = device_get_softc(dev); 511 mii_phy_down(sc); 512 sc->mii_dev = NULL; 513 LIST_REMOVE(sc, mii_list); 514 515 return(0); 516} 517 518const struct mii_phydesc * 519mii_phy_match_gen(const struct mii_attach_args *ma, 520 const struct mii_phydesc *mpd, size_t len) 521{ 522 523 for (; mpd->mpd_name != NULL; 524 mpd = (const struct mii_phydesc *) ((const char *) mpd + len)) { 525 if (MII_OUI(ma->mii_id1, ma->mii_id2) == mpd->mpd_oui && 526 MII_MODEL(ma->mii_id2) == mpd->mpd_model) 527 return (mpd); 528 } 529 return (NULL); 530} 531 532const struct mii_phydesc * 533mii_phy_match(const struct mii_attach_args *ma, const struct mii_phydesc *mpd) 534{ 535 536 return (mii_phy_match_gen(ma, mpd, sizeof(struct mii_phydesc))); 537} 538 539int 540mii_phy_dev_probe(device_t dev, const struct mii_phydesc *mpd, int mrv) 541{ 542 543 mpd = mii_phy_match(device_get_ivars(dev), mpd); 544 if (mpd != NULL) { 545 device_set_desc(dev, mpd->mpd_name); 546 return (mrv); 547 } 548 549 return (ENXIO); 550}
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