1 /* 2 * Generic PHY Management code 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 * 6 * Copyright 2011 Freescale Semiconductor, Inc. 7 * author Andy Fleming 8 * 9 * Based loosely off of Linux's PHY Lib 10 */ 11 12 #include <config.h> 13 #include <common.h> 14 #include <console.h> 15 #include <dm.h> 16 #include <malloc.h> 17 #include <net.h> 18 #include <command.h> 19 #include <miiphy.h> 20 #include <phy.h> 21 #include <errno.h> 22 #include <linux/err.h> 23 #include <linux/compiler.h> 24 25 DECLARE_GLOBAL_DATA_PTR; 26 27 /* Generic PHY support and helper functions */ 28 29 /** 30 * genphy_config_advert - sanitize and advertise auto-negotation parameters 31 * @phydev: target phy_device struct 32 * 33 * Description: Writes MII_ADVERTISE with the appropriate values, 34 * after sanitizing the values to make sure we only advertise 35 * what is supported. Returns < 0 on error, 0 if the PHY's advertisement 36 * hasn't changed, and > 0 if it has changed. 37 */ 38 static int genphy_config_advert(struct phy_device *phydev) 39 { 40 u32 advertise; 41 int oldadv, adv; 42 int err, changed = 0; 43 44 /* Only allow advertising what 45 * this PHY supports */ 46 phydev->advertising &= phydev->supported; 47 advertise = phydev->advertising; 48 49 /* Setup standard advertisement */ 50 oldadv = adv = phy_read(phydev, MDIO_DEVAD_NONE, MII_ADVERTISE); 51 52 if (adv < 0) 53 return adv; 54 55 adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | 56 ADVERTISE_PAUSE_ASYM); 57 if (advertise & ADVERTISED_10baseT_Half) 58 adv |= ADVERTISE_10HALF; 59 if (advertise & ADVERTISED_10baseT_Full) 60 adv |= ADVERTISE_10FULL; 61 if (advertise & ADVERTISED_100baseT_Half) 62 adv |= ADVERTISE_100HALF; 63 if (advertise & ADVERTISED_100baseT_Full) 64 adv |= ADVERTISE_100FULL; 65 if (advertise & ADVERTISED_Pause) 66 adv |= ADVERTISE_PAUSE_CAP; 67 if (advertise & ADVERTISED_Asym_Pause) 68 adv |= ADVERTISE_PAUSE_ASYM; 69 if (advertise & ADVERTISED_1000baseX_Half) 70 adv |= ADVERTISE_1000XHALF; 71 if (advertise & ADVERTISED_1000baseX_Full) 72 adv |= ADVERTISE_1000XFULL; 73 74 if (adv != oldadv) { 75 err = phy_write(phydev, MDIO_DEVAD_NONE, MII_ADVERTISE, adv); 76 77 if (err < 0) 78 return err; 79 changed = 1; 80 } 81 82 /* Configure gigabit if it's supported */ 83 if (phydev->supported & (SUPPORTED_1000baseT_Half | 84 SUPPORTED_1000baseT_Full)) { 85 oldadv = adv = phy_read(phydev, MDIO_DEVAD_NONE, MII_CTRL1000); 86 87 if (adv < 0) 88 return adv; 89 90 adv &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF); 91 if (advertise & SUPPORTED_1000baseT_Half) 92 adv |= ADVERTISE_1000HALF; 93 if (advertise & SUPPORTED_1000baseT_Full) 94 adv |= ADVERTISE_1000FULL; 95 96 if (adv != oldadv) { 97 err = phy_write(phydev, MDIO_DEVAD_NONE, MII_CTRL1000, 98 adv); 99 100 if (err < 0) 101 return err; 102 changed = 1; 103 } 104 } 105 106 return changed; 107 } 108 109 110 /** 111 * genphy_setup_forced - configures/forces speed/duplex from @phydev 112 * @phydev: target phy_device struct 113 * 114 * Description: Configures MII_BMCR to force speed/duplex 115 * to the values in phydev. Assumes that the values are valid. 116 */ 117 static int genphy_setup_forced(struct phy_device *phydev) 118 { 119 int err; 120 int ctl = 0; 121 122 phydev->pause = phydev->asym_pause = 0; 123 124 if (SPEED_1000 == phydev->speed) 125 ctl |= BMCR_SPEED1000; 126 else if (SPEED_100 == phydev->speed) 127 ctl |= BMCR_SPEED100; 128 129 if (DUPLEX_FULL == phydev->duplex) 130 ctl |= BMCR_FULLDPLX; 131 132 err = phy_write(phydev, MDIO_DEVAD_NONE, MII_BMCR, ctl); 133 134 return err; 135 } 136 137 138 /** 139 * genphy_restart_aneg - Enable and Restart Autonegotiation 140 * @phydev: target phy_device struct 141 */ 142 int genphy_restart_aneg(struct phy_device *phydev) 143 { 144 int ctl; 145 146 ctl = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMCR); 147 148 if (ctl < 0) 149 return ctl; 150 151 ctl |= (BMCR_ANENABLE | BMCR_ANRESTART); 152 153 /* Don't isolate the PHY if we're negotiating */ 154 ctl &= ~(BMCR_ISOLATE); 155 156 ctl = phy_write(phydev, MDIO_DEVAD_NONE, MII_BMCR, ctl); 157 158 return ctl; 159 } 160 161 162 /** 163 * genphy_config_aneg - restart auto-negotiation or write BMCR 164 * @phydev: target phy_device struct 165 * 166 * Description: If auto-negotiation is enabled, we configure the 167 * advertising, and then restart auto-negotiation. If it is not 168 * enabled, then we write the BMCR. 169 */ 170 int genphy_config_aneg(struct phy_device *phydev) 171 { 172 int result; 173 174 if (AUTONEG_ENABLE != phydev->autoneg) 175 return genphy_setup_forced(phydev); 176 177 result = genphy_config_advert(phydev); 178 179 if (result < 0) /* error */ 180 return result; 181 182 if (result == 0) { 183 /* Advertisment hasn't changed, but maybe aneg was never on to 184 * begin with? Or maybe phy was isolated? */ 185 int ctl = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMCR); 186 187 if (ctl < 0) 188 return ctl; 189 190 if (!(ctl & BMCR_ANENABLE) || (ctl & BMCR_ISOLATE)) 191 result = 1; /* do restart aneg */ 192 } 193 194 /* Only restart aneg if we are advertising something different 195 * than we were before. */ 196 if (result > 0) 197 result = genphy_restart_aneg(phydev); 198 199 return result; 200 } 201 202 /** 203 * genphy_update_link - update link status in @phydev 204 * @phydev: target phy_device struct 205 * 206 * Description: Update the value in phydev->link to reflect the 207 * current link value. In order to do this, we need to read 208 * the status register twice, keeping the second value. 209 */ 210 int genphy_update_link(struct phy_device *phydev) 211 { 212 unsigned int mii_reg; 213 214 /* 215 * Wait if the link is up, and autonegotiation is in progress 216 * (ie - we're capable and it's not done) 217 */ 218 mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMSR); 219 220 /* 221 * If we already saw the link up, and it hasn't gone down, then 222 * we don't need to wait for autoneg again 223 */ 224 if (phydev->link && mii_reg & BMSR_LSTATUS) 225 return 0; 226 227 if ((mii_reg & BMSR_ANEGCAPABLE) && !(mii_reg & BMSR_ANEGCOMPLETE)) { 228 int i = 0; 229 230 printf("%s Waiting for PHY auto negotiation to complete", 231 phydev->dev->name); 232 while (!(mii_reg & BMSR_ANEGCOMPLETE)) { 233 /* 234 * Timeout reached ? 235 */ 236 if (i > PHY_ANEG_TIMEOUT) { 237 printf(" TIMEOUT !\n"); 238 phydev->link = 0; 239 return 0; 240 } 241 242 if (ctrlc()) { 243 puts("user interrupt!\n"); 244 phydev->link = 0; 245 return -EINTR; 246 } 247 248 if ((i++ % 500) == 0) 249 printf("."); 250 251 udelay(1000); /* 1 ms */ 252 mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMSR); 253 } 254 printf(" done\n"); 255 phydev->link = 1; 256 } else { 257 /* Read the link a second time to clear the latched state */ 258 mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMSR); 259 260 if (mii_reg & BMSR_LSTATUS) 261 phydev->link = 1; 262 else 263 phydev->link = 0; 264 } 265 266 return 0; 267 } 268 269 /* 270 * Generic function which updates the speed and duplex. If 271 * autonegotiation is enabled, it uses the AND of the link 272 * partner's advertised capabilities and our advertised 273 * capabilities. If autonegotiation is disabled, we use the 274 * appropriate bits in the control register. 275 * 276 * Stolen from Linux's mii.c and phy_device.c 277 */ 278 int genphy_parse_link(struct phy_device *phydev) 279 { 280 int mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMSR); 281 282 /* We're using autonegotiation */ 283 if (phydev->supported & SUPPORTED_Autoneg) { 284 u32 lpa = 0; 285 int gblpa = 0; 286 u32 estatus = 0; 287 288 /* Check for gigabit capability */ 289 if (phydev->supported & (SUPPORTED_1000baseT_Full | 290 SUPPORTED_1000baseT_Half)) { 291 /* We want a list of states supported by 292 * both PHYs in the link 293 */ 294 gblpa = phy_read(phydev, MDIO_DEVAD_NONE, MII_STAT1000); 295 if (gblpa < 0) { 296 debug("Could not read MII_STAT1000. Ignoring gigabit capability\n"); 297 gblpa = 0; 298 } 299 gblpa &= phy_read(phydev, 300 MDIO_DEVAD_NONE, MII_CTRL1000) << 2; 301 } 302 303 /* Set the baseline so we only have to set them 304 * if they're different 305 */ 306 phydev->speed = SPEED_10; 307 phydev->duplex = DUPLEX_HALF; 308 309 /* Check the gigabit fields */ 310 if (gblpa & (PHY_1000BTSR_1000FD | PHY_1000BTSR_1000HD)) { 311 phydev->speed = SPEED_1000; 312 313 if (gblpa & PHY_1000BTSR_1000FD) 314 phydev->duplex = DUPLEX_FULL; 315 316 /* We're done! */ 317 return 0; 318 } 319 320 lpa = phy_read(phydev, MDIO_DEVAD_NONE, MII_ADVERTISE); 321 lpa &= phy_read(phydev, MDIO_DEVAD_NONE, MII_LPA); 322 323 if (lpa & (LPA_100FULL | LPA_100HALF)) { 324 phydev->speed = SPEED_100; 325 326 if (lpa & LPA_100FULL) 327 phydev->duplex = DUPLEX_FULL; 328 329 } else if (lpa & LPA_10FULL) 330 phydev->duplex = DUPLEX_FULL; 331 332 /* 333 * Extended status may indicate that the PHY supports 334 * 1000BASE-T/X even though the 1000BASE-T registers 335 * are missing. In this case we can't tell whether the 336 * peer also supports it, so we only check extended 337 * status if the 1000BASE-T registers are actually 338 * missing. 339 */ 340 if ((mii_reg & BMSR_ESTATEN) && !(mii_reg & BMSR_ERCAP)) 341 estatus = phy_read(phydev, MDIO_DEVAD_NONE, 342 MII_ESTATUS); 343 344 if (estatus & (ESTATUS_1000_XFULL | ESTATUS_1000_XHALF | 345 ESTATUS_1000_TFULL | ESTATUS_1000_THALF)) { 346 phydev->speed = SPEED_1000; 347 if (estatus & (ESTATUS_1000_XFULL | ESTATUS_1000_TFULL)) 348 phydev->duplex = DUPLEX_FULL; 349 } 350 351 } else { 352 u32 bmcr = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMCR); 353 354 phydev->speed = SPEED_10; 355 phydev->duplex = DUPLEX_HALF; 356 357 if (bmcr & BMCR_FULLDPLX) 358 phydev->duplex = DUPLEX_FULL; 359 360 if (bmcr & BMCR_SPEED1000) 361 phydev->speed = SPEED_1000; 362 else if (bmcr & BMCR_SPEED100) 363 phydev->speed = SPEED_100; 364 } 365 366 return 0; 367 } 368 369 int genphy_config(struct phy_device *phydev) 370 { 371 int val; 372 u32 features; 373 374 /* For now, I'll claim that the generic driver supports 375 * all possible port types */ 376 features = (SUPPORTED_TP | SUPPORTED_MII 377 | SUPPORTED_AUI | SUPPORTED_FIBRE | 378 SUPPORTED_BNC); 379 380 /* Do we support autonegotiation? */ 381 val = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMSR); 382 383 if (val < 0) 384 return val; 385 386 if (val & BMSR_ANEGCAPABLE) 387 features |= SUPPORTED_Autoneg; 388 389 if (val & BMSR_100FULL) 390 features |= SUPPORTED_100baseT_Full; 391 if (val & BMSR_100HALF) 392 features |= SUPPORTED_100baseT_Half; 393 if (val & BMSR_10FULL) 394 features |= SUPPORTED_10baseT_Full; 395 if (val & BMSR_10HALF) 396 features |= SUPPORTED_10baseT_Half; 397 398 if (val & BMSR_ESTATEN) { 399 val = phy_read(phydev, MDIO_DEVAD_NONE, MII_ESTATUS); 400 401 if (val < 0) 402 return val; 403 404 if (val & ESTATUS_1000_TFULL) 405 features |= SUPPORTED_1000baseT_Full; 406 if (val & ESTATUS_1000_THALF) 407 features |= SUPPORTED_1000baseT_Half; 408 if (val & ESTATUS_1000_XFULL) 409 features |= SUPPORTED_1000baseX_Full; 410 if (val & ESTATUS_1000_XHALF) 411 features |= SUPPORTED_1000baseX_Half; 412 } 413 414 phydev->supported = features; 415 phydev->advertising = features; 416 417 genphy_config_aneg(phydev); 418 419 return 0; 420 } 421 422 int genphy_startup(struct phy_device *phydev) 423 { 424 genphy_update_link(phydev); 425 genphy_parse_link(phydev); 426 427 return 0; 428 } 429 430 int genphy_shutdown(struct phy_device *phydev) 431 { 432 return 0; 433 } 434 435 static struct phy_driver genphy_driver = { 436 .uid = 0xffffffff, 437 .mask = 0xffffffff, 438 .name = "Generic PHY", 439 .features = 0, 440 .config = genphy_config, 441 .startup = genphy_startup, 442 .shutdown = genphy_shutdown, 443 }; 444 445 static LIST_HEAD(phy_drivers); 446 447 int phy_init(void) 448 { 449 #ifdef CONFIG_PHY_AQUANTIA 450 phy_aquantia_init(); 451 #endif 452 #ifdef CONFIG_PHY_ATHEROS 453 phy_atheros_init(); 454 #endif 455 #ifdef CONFIG_PHY_BROADCOM 456 phy_broadcom_init(); 457 #endif 458 #ifdef CONFIG_PHY_CORTINA 459 phy_cortina_init(); 460 #endif 461 #ifdef CONFIG_PHY_DAVICOM 462 phy_davicom_init(); 463 #endif 464 #ifdef CONFIG_PHY_ET1011C 465 phy_et1011c_init(); 466 #endif 467 #ifdef CONFIG_PHY_LXT 468 phy_lxt_init(); 469 #endif 470 #ifdef CONFIG_PHY_MARVELL 471 phy_marvell_init(); 472 #endif 473 #ifdef CONFIG_PHY_MICREL 474 phy_micrel_init(); 475 #endif 476 #ifdef CONFIG_PHY_NATSEMI 477 phy_natsemi_init(); 478 #endif 479 #ifdef CONFIG_PHY_REALTEK 480 phy_realtek_init(); 481 #endif 482 #ifdef CONFIG_PHY_SMSC 483 phy_smsc_init(); 484 #endif 485 #ifdef CONFIG_PHY_TERANETICS 486 phy_teranetics_init(); 487 #endif 488 #ifdef CONFIG_PHY_TI 489 phy_ti_init(); 490 #endif 491 #ifdef CONFIG_PHY_VITESSE 492 phy_vitesse_init(); 493 #endif 494 495 return 0; 496 } 497 498 int phy_register(struct phy_driver *drv) 499 { 500 INIT_LIST_HEAD(&drv->list); 501 list_add_tail(&drv->list, &phy_drivers); 502 503 #ifdef CONFIG_NEEDS_MANUAL_RELOC 504 if (drv->probe) 505 drv->probe += gd->reloc_off; 506 if (drv->config) 507 drv->config += gd->reloc_off; 508 if (drv->startup) 509 drv->startup += gd->reloc_off; 510 if (drv->shutdown) 511 drv->shutdown += gd->reloc_off; 512 if (drv->readext) 513 drv->readext += gd->reloc_off; 514 if (drv->writeext) 515 drv->writeext += gd->reloc_off; 516 #endif 517 return 0; 518 } 519 520 static int phy_probe(struct phy_device *phydev) 521 { 522 int err = 0; 523 524 phydev->advertising = phydev->supported = phydev->drv->features; 525 phydev->mmds = phydev->drv->mmds; 526 527 if (phydev->drv->probe) 528 err = phydev->drv->probe(phydev); 529 530 return err; 531 } 532 533 static struct phy_driver *generic_for_interface(phy_interface_t interface) 534 { 535 #ifdef CONFIG_PHYLIB_10G 536 if (is_10g_interface(interface)) 537 return &gen10g_driver; 538 #endif 539 540 return &genphy_driver; 541 } 542 543 static struct phy_driver *get_phy_driver(struct phy_device *phydev, 544 phy_interface_t interface) 545 { 546 struct list_head *entry; 547 int phy_id = phydev->phy_id; 548 struct phy_driver *drv = NULL; 549 550 list_for_each(entry, &phy_drivers) { 551 drv = list_entry(entry, struct phy_driver, list); 552 if ((drv->uid & drv->mask) == (phy_id & drv->mask)) 553 return drv; 554 } 555 556 /* If we made it here, there's no driver for this PHY */ 557 return generic_for_interface(interface); 558 } 559 560 static struct phy_device *phy_device_create(struct mii_dev *bus, int addr, 561 u32 phy_id, 562 phy_interface_t interface) 563 { 564 struct phy_device *dev; 565 566 /* We allocate the device, and initialize the 567 * default values */ 568 dev = malloc(sizeof(*dev)); 569 if (!dev) { 570 printf("Failed to allocate PHY device for %s:%d\n", 571 bus->name, addr); 572 return NULL; 573 } 574 575 memset(dev, 0, sizeof(*dev)); 576 577 dev->duplex = -1; 578 dev->link = 0; 579 dev->interface = interface; 580 581 dev->autoneg = AUTONEG_ENABLE; 582 583 dev->addr = addr; 584 dev->phy_id = phy_id; 585 dev->bus = bus; 586 587 dev->drv = get_phy_driver(dev, interface); 588 589 phy_probe(dev); 590 591 bus->phymap[addr] = dev; 592 593 return dev; 594 } 595 596 /** 597 * get_phy_id - reads the specified addr for its ID. 598 * @bus: the target MII bus 599 * @addr: PHY address on the MII bus 600 * @phy_id: where to store the ID retrieved. 601 * 602 * Description: Reads the ID registers of the PHY at @addr on the 603 * @bus, stores it in @phy_id and returns zero on success. 604 */ 605 int __weak get_phy_id(struct mii_dev *bus, int addr, int devad, u32 *phy_id) 606 { 607 int phy_reg; 608 609 /* Grab the bits from PHYIR1, and put them 610 * in the upper half */ 611 phy_reg = bus->read(bus, addr, devad, MII_PHYSID1); 612 613 if (phy_reg < 0) 614 return -EIO; 615 616 *phy_id = (phy_reg & 0xffff) << 16; 617 618 /* Grab the bits from PHYIR2, and put them in the lower half */ 619 phy_reg = bus->read(bus, addr, devad, MII_PHYSID2); 620 621 if (phy_reg < 0) 622 return -EIO; 623 624 *phy_id |= (phy_reg & 0xffff); 625 626 return 0; 627 } 628 629 static struct phy_device *create_phy_by_mask(struct mii_dev *bus, 630 unsigned phy_mask, int devad, phy_interface_t interface) 631 { 632 u32 phy_id = 0xffffffff; 633 while (phy_mask) { 634 int addr = ffs(phy_mask) - 1; 635 int r = get_phy_id(bus, addr, devad, &phy_id); 636 /* If the PHY ID is mostly f's, we didn't find anything */ 637 if (r == 0 && (phy_id & 0x1fffffff) != 0x1fffffff) 638 return phy_device_create(bus, addr, phy_id, interface); 639 phy_mask &= ~(1 << addr); 640 } 641 return NULL; 642 } 643 644 static struct phy_device *search_for_existing_phy(struct mii_dev *bus, 645 unsigned phy_mask, phy_interface_t interface) 646 { 647 /* If we have one, return the existing device, with new interface */ 648 while (phy_mask) { 649 int addr = ffs(phy_mask) - 1; 650 if (bus->phymap[addr]) { 651 bus->phymap[addr]->interface = interface; 652 return bus->phymap[addr]; 653 } 654 phy_mask &= ~(1 << addr); 655 } 656 return NULL; 657 } 658 659 static struct phy_device *get_phy_device_by_mask(struct mii_dev *bus, 660 unsigned phy_mask, phy_interface_t interface) 661 { 662 int i; 663 struct phy_device *phydev; 664 665 phydev = search_for_existing_phy(bus, phy_mask, interface); 666 if (phydev) 667 return phydev; 668 /* Try Standard (ie Clause 22) access */ 669 /* Otherwise we have to try Clause 45 */ 670 for (i = 0; i < 5; i++) { 671 phydev = create_phy_by_mask(bus, phy_mask, 672 i ? i : MDIO_DEVAD_NONE, interface); 673 if (IS_ERR(phydev)) 674 return NULL; 675 if (phydev) 676 return phydev; 677 } 678 679 debug("\n%s PHY: ", bus->name); 680 while (phy_mask) { 681 int addr = ffs(phy_mask) - 1; 682 debug("%d ", addr); 683 phy_mask &= ~(1 << addr); 684 } 685 debug("not found\n"); 686 687 return NULL; 688 } 689 690 /** 691 * get_phy_device - reads the specified PHY device and returns its @phy_device struct 692 * @bus: the target MII bus 693 * @addr: PHY address on the MII bus 694 * 695 * Description: Reads the ID registers of the PHY at @addr on the 696 * @bus, then allocates and returns the phy_device to represent it. 697 */ 698 static struct phy_device *get_phy_device(struct mii_dev *bus, int addr, 699 phy_interface_t interface) 700 { 701 return get_phy_device_by_mask(bus, 1 << addr, interface); 702 } 703 704 int phy_reset(struct phy_device *phydev) 705 { 706 int reg; 707 int timeout = 500; 708 int devad = MDIO_DEVAD_NONE; 709 710 #ifdef CONFIG_PHYLIB_10G 711 /* If it's 10G, we need to issue reset through one of the MMDs */ 712 if (is_10g_interface(phydev->interface)) { 713 if (!phydev->mmds) 714 gen10g_discover_mmds(phydev); 715 716 devad = ffs(phydev->mmds) - 1; 717 } 718 #endif 719 720 reg = phy_read(phydev, devad, MII_BMCR); 721 if (reg < 0) { 722 debug("PHY status read failed\n"); 723 return -1; 724 } 725 726 reg |= BMCR_RESET; 727 728 if (phy_write(phydev, devad, MII_BMCR, reg) < 0) { 729 debug("PHY reset failed\n"); 730 return -1; 731 } 732 733 #ifdef CONFIG_PHY_RESET_DELAY 734 udelay(CONFIG_PHY_RESET_DELAY); /* Intel LXT971A needs this */ 735 #endif 736 /* 737 * Poll the control register for the reset bit to go to 0 (it is 738 * auto-clearing). This should happen within 0.5 seconds per the 739 * IEEE spec. 740 */ 741 while ((reg & BMCR_RESET) && timeout--) { 742 reg = phy_read(phydev, devad, MII_BMCR); 743 744 if (reg < 0) { 745 debug("PHY status read failed\n"); 746 return -1; 747 } 748 udelay(1000); 749 } 750 751 if (reg & BMCR_RESET) { 752 puts("PHY reset timed out\n"); 753 return -1; 754 } 755 756 return 0; 757 } 758 759 int miiphy_reset(const char *devname, unsigned char addr) 760 { 761 struct mii_dev *bus = miiphy_get_dev_by_name(devname); 762 struct phy_device *phydev; 763 764 /* 765 * miiphy_reset was only used on standard PHYs, so we'll fake it here. 766 * If later code tries to connect with the right interface, this will 767 * be corrected by get_phy_device in phy_connect() 768 */ 769 phydev = get_phy_device(bus, addr, PHY_INTERFACE_MODE_MII); 770 771 return phy_reset(phydev); 772 } 773 774 struct phy_device *phy_find_by_mask(struct mii_dev *bus, unsigned phy_mask, 775 phy_interface_t interface) 776 { 777 /* Reset the bus */ 778 if (bus->reset) { 779 bus->reset(bus); 780 781 /* Wait 15ms to make sure the PHY has come out of hard reset */ 782 udelay(15000); 783 } 784 785 return get_phy_device_by_mask(bus, phy_mask, interface); 786 } 787 788 #ifdef CONFIG_DM_ETH 789 void phy_connect_dev(struct phy_device *phydev, struct udevice *dev) 790 #else 791 void phy_connect_dev(struct phy_device *phydev, struct eth_device *dev) 792 #endif 793 { 794 /* Soft Reset the PHY */ 795 phy_reset(phydev); 796 if (phydev->dev && phydev->dev != dev) { 797 printf("%s:%d is connected to %s. Reconnecting to %s\n", 798 phydev->bus->name, phydev->addr, 799 phydev->dev->name, dev->name); 800 } 801 phydev->dev = dev; 802 debug("%s connected to %s\n", dev->name, phydev->drv->name); 803 } 804 805 #ifdef CONFIG_DM_ETH 806 struct phy_device *phy_connect(struct mii_dev *bus, int addr, 807 struct udevice *dev, phy_interface_t interface) 808 #else 809 struct phy_device *phy_connect(struct mii_dev *bus, int addr, 810 struct eth_device *dev, phy_interface_t interface) 811 #endif 812 { 813 struct phy_device *phydev; 814 815 phydev = phy_find_by_mask(bus, 1 << addr, interface); 816 if (phydev) 817 phy_connect_dev(phydev, dev); 818 else 819 printf("Could not get PHY for %s: addr %d\n", bus->name, addr); 820 return phydev; 821 } 822 823 /* 824 * Start the PHY. Returns 0 on success, or a negative error code. 825 */ 826 int phy_startup(struct phy_device *phydev) 827 { 828 if (phydev->drv->startup) 829 return phydev->drv->startup(phydev); 830 831 return 0; 832 } 833 834 __weak int board_phy_config(struct phy_device *phydev) 835 { 836 if (phydev->drv->config) 837 return phydev->drv->config(phydev); 838 return 0; 839 } 840 841 int phy_config(struct phy_device *phydev) 842 { 843 /* Invoke an optional board-specific helper */ 844 board_phy_config(phydev); 845 846 return 0; 847 } 848 849 int phy_shutdown(struct phy_device *phydev) 850 { 851 if (phydev->drv->shutdown) 852 phydev->drv->shutdown(phydev); 853 854 return 0; 855 } 856 857 int phy_get_interface_by_name(const char *str) 858 { 859 int i; 860 861 for (i = 0; i < PHY_INTERFACE_MODE_COUNT; i++) { 862 if (!strcmp(str, phy_interface_strings[i])) 863 return i; 864 } 865 866 return -1; 867 } 868