1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * phylink models the MAC to optional PHY connection, supporting 4 * technologies such as SFP cages where the PHY is hot-pluggable. 5 * 6 * Copyright (C) 2015 Russell King 7 */ 8 #include <linux/ethtool.h> 9 #include <linux/export.h> 10 #include <linux/gpio/consumer.h> 11 #include <linux/netdevice.h> 12 #include <linux/of.h> 13 #include <linux/of_mdio.h> 14 #include <linux/phy.h> 15 #include <linux/phy_fixed.h> 16 #include <linux/phylink.h> 17 #include <linux/rtnetlink.h> 18 #include <linux/spinlock.h> 19 #include <linux/timer.h> 20 #include <linux/workqueue.h> 21 22 #include "sfp.h" 23 #include "swphy.h" 24 25 #define SUPPORTED_INTERFACES \ 26 (SUPPORTED_TP | SUPPORTED_MII | SUPPORTED_FIBRE | \ 27 SUPPORTED_BNC | SUPPORTED_AUI | SUPPORTED_Backplane) 28 #define ADVERTISED_INTERFACES \ 29 (ADVERTISED_TP | ADVERTISED_MII | ADVERTISED_FIBRE | \ 30 ADVERTISED_BNC | ADVERTISED_AUI | ADVERTISED_Backplane) 31 32 enum { 33 PHYLINK_DISABLE_STOPPED, 34 PHYLINK_DISABLE_LINK, 35 }; 36 37 /** 38 * struct phylink - internal data type for phylink 39 */ 40 struct phylink { 41 /* private: */ 42 struct net_device *netdev; 43 const struct phylink_mac_ops *ops; 44 struct phylink_config *config; 45 struct device *dev; 46 unsigned int old_link_state:1; 47 48 unsigned long phylink_disable_state; /* bitmask of disables */ 49 struct phy_device *phydev; 50 phy_interface_t link_interface; /* PHY_INTERFACE_xxx */ 51 u8 cfg_link_an_mode; /* MLO_AN_xxx */ 52 u8 cur_link_an_mode; 53 u8 link_port; /* The current non-phy ethtool port */ 54 __ETHTOOL_DECLARE_LINK_MODE_MASK(supported); 55 56 /* The link configuration settings */ 57 struct phylink_link_state link_config; 58 59 /* The current settings */ 60 phy_interface_t cur_interface; 61 62 struct gpio_desc *link_gpio; 63 unsigned int link_irq; 64 struct timer_list link_poll; 65 void (*get_fixed_state)(struct net_device *dev, 66 struct phylink_link_state *s); 67 68 struct mutex state_mutex; 69 struct phylink_link_state phy_state; 70 struct work_struct resolve; 71 72 bool mac_link_dropped; 73 74 struct sfp_bus *sfp_bus; 75 bool sfp_may_have_phy; 76 __ETHTOOL_DECLARE_LINK_MODE_MASK(sfp_support); 77 u8 sfp_port; 78 }; 79 80 #define phylink_printk(level, pl, fmt, ...) \ 81 do { \ 82 if ((pl)->config->type == PHYLINK_NETDEV) \ 83 netdev_printk(level, (pl)->netdev, fmt, ##__VA_ARGS__); \ 84 else if ((pl)->config->type == PHYLINK_DEV) \ 85 dev_printk(level, (pl)->dev, fmt, ##__VA_ARGS__); \ 86 } while (0) 87 88 #define phylink_err(pl, fmt, ...) \ 89 phylink_printk(KERN_ERR, pl, fmt, ##__VA_ARGS__) 90 #define phylink_warn(pl, fmt, ...) \ 91 phylink_printk(KERN_WARNING, pl, fmt, ##__VA_ARGS__) 92 #define phylink_info(pl, fmt, ...) \ 93 phylink_printk(KERN_INFO, pl, fmt, ##__VA_ARGS__) 94 #if defined(CONFIG_DYNAMIC_DEBUG) 95 #define phylink_dbg(pl, fmt, ...) \ 96 do { \ 97 if ((pl)->config->type == PHYLINK_NETDEV) \ 98 netdev_dbg((pl)->netdev, fmt, ##__VA_ARGS__); \ 99 else if ((pl)->config->type == PHYLINK_DEV) \ 100 dev_dbg((pl)->dev, fmt, ##__VA_ARGS__); \ 101 } while (0) 102 #elif defined(DEBUG) 103 #define phylink_dbg(pl, fmt, ...) \ 104 phylink_printk(KERN_DEBUG, pl, fmt, ##__VA_ARGS__) 105 #else 106 #define phylink_dbg(pl, fmt, ...) \ 107 ({ \ 108 if (0) \ 109 phylink_printk(KERN_DEBUG, pl, fmt, ##__VA_ARGS__); \ 110 }) 111 #endif 112 113 /** 114 * phylink_set_port_modes() - set the port type modes in the ethtool mask 115 * @mask: ethtool link mode mask 116 * 117 * Sets all the port type modes in the ethtool mask. MAC drivers should 118 * use this in their 'validate' callback. 119 */ 120 void phylink_set_port_modes(unsigned long *mask) 121 { 122 phylink_set(mask, TP); 123 phylink_set(mask, AUI); 124 phylink_set(mask, MII); 125 phylink_set(mask, FIBRE); 126 phylink_set(mask, BNC); 127 phylink_set(mask, Backplane); 128 } 129 EXPORT_SYMBOL_GPL(phylink_set_port_modes); 130 131 static int phylink_is_empty_linkmode(const unsigned long *linkmode) 132 { 133 __ETHTOOL_DECLARE_LINK_MODE_MASK(tmp) = { 0, }; 134 135 phylink_set_port_modes(tmp); 136 phylink_set(tmp, Autoneg); 137 phylink_set(tmp, Pause); 138 phylink_set(tmp, Asym_Pause); 139 140 return linkmode_subset(linkmode, tmp); 141 } 142 143 static const char *phylink_an_mode_str(unsigned int mode) 144 { 145 static const char *modestr[] = { 146 [MLO_AN_PHY] = "phy", 147 [MLO_AN_FIXED] = "fixed", 148 [MLO_AN_INBAND] = "inband", 149 }; 150 151 return mode < ARRAY_SIZE(modestr) ? modestr[mode] : "unknown"; 152 } 153 154 static int phylink_validate(struct phylink *pl, unsigned long *supported, 155 struct phylink_link_state *state) 156 { 157 pl->ops->validate(pl->config, supported, state); 158 159 return phylink_is_empty_linkmode(supported) ? -EINVAL : 0; 160 } 161 162 static int phylink_parse_fixedlink(struct phylink *pl, 163 struct fwnode_handle *fwnode) 164 { 165 struct fwnode_handle *fixed_node; 166 const struct phy_setting *s; 167 struct gpio_desc *desc; 168 u32 speed; 169 int ret; 170 171 fixed_node = fwnode_get_named_child_node(fwnode, "fixed-link"); 172 if (fixed_node) { 173 ret = fwnode_property_read_u32(fixed_node, "speed", &speed); 174 175 pl->link_config.speed = speed; 176 pl->link_config.duplex = DUPLEX_HALF; 177 178 if (fwnode_property_read_bool(fixed_node, "full-duplex")) 179 pl->link_config.duplex = DUPLEX_FULL; 180 181 /* We treat the "pause" and "asym-pause" terminology as 182 * defining the link partner's ability. */ 183 if (fwnode_property_read_bool(fixed_node, "pause")) 184 pl->link_config.pause |= MLO_PAUSE_SYM; 185 if (fwnode_property_read_bool(fixed_node, "asym-pause")) 186 pl->link_config.pause |= MLO_PAUSE_ASYM; 187 188 if (ret == 0) { 189 desc = fwnode_gpiod_get_index(fixed_node, "link", 0, 190 GPIOD_IN, "?"); 191 192 if (!IS_ERR(desc)) 193 pl->link_gpio = desc; 194 else if (desc == ERR_PTR(-EPROBE_DEFER)) 195 ret = -EPROBE_DEFER; 196 } 197 fwnode_handle_put(fixed_node); 198 199 if (ret) 200 return ret; 201 } else { 202 u32 prop[5]; 203 204 ret = fwnode_property_read_u32_array(fwnode, "fixed-link", 205 NULL, 0); 206 if (ret != ARRAY_SIZE(prop)) { 207 phylink_err(pl, "broken fixed-link?\n"); 208 return -EINVAL; 209 } 210 211 ret = fwnode_property_read_u32_array(fwnode, "fixed-link", 212 prop, ARRAY_SIZE(prop)); 213 if (!ret) { 214 pl->link_config.duplex = prop[1] ? 215 DUPLEX_FULL : DUPLEX_HALF; 216 pl->link_config.speed = prop[2]; 217 if (prop[3]) 218 pl->link_config.pause |= MLO_PAUSE_SYM; 219 if (prop[4]) 220 pl->link_config.pause |= MLO_PAUSE_ASYM; 221 } 222 } 223 224 if (pl->link_config.speed > SPEED_1000 && 225 pl->link_config.duplex != DUPLEX_FULL) 226 phylink_warn(pl, "fixed link specifies half duplex for %dMbps link?\n", 227 pl->link_config.speed); 228 229 bitmap_fill(pl->supported, __ETHTOOL_LINK_MODE_MASK_NBITS); 230 linkmode_copy(pl->link_config.advertising, pl->supported); 231 phylink_validate(pl, pl->supported, &pl->link_config); 232 233 s = phy_lookup_setting(pl->link_config.speed, pl->link_config.duplex, 234 pl->supported, true); 235 linkmode_zero(pl->supported); 236 phylink_set(pl->supported, MII); 237 phylink_set(pl->supported, Pause); 238 phylink_set(pl->supported, Asym_Pause); 239 if (s) { 240 __set_bit(s->bit, pl->supported); 241 } else { 242 phylink_warn(pl, "fixed link %s duplex %dMbps not recognised\n", 243 pl->link_config.duplex == DUPLEX_FULL ? "full" : "half", 244 pl->link_config.speed); 245 } 246 247 linkmode_and(pl->link_config.advertising, pl->link_config.advertising, 248 pl->supported); 249 250 pl->link_config.link = 1; 251 pl->link_config.an_complete = 1; 252 253 return 0; 254 } 255 256 static int phylink_parse_mode(struct phylink *pl, struct fwnode_handle *fwnode) 257 { 258 struct fwnode_handle *dn; 259 const char *managed; 260 261 dn = fwnode_get_named_child_node(fwnode, "fixed-link"); 262 if (dn || fwnode_property_present(fwnode, "fixed-link")) 263 pl->cfg_link_an_mode = MLO_AN_FIXED; 264 fwnode_handle_put(dn); 265 266 if (fwnode_property_read_string(fwnode, "managed", &managed) == 0 && 267 strcmp(managed, "in-band-status") == 0) { 268 if (pl->cfg_link_an_mode == MLO_AN_FIXED) { 269 phylink_err(pl, 270 "can't use both fixed-link and in-band-status\n"); 271 return -EINVAL; 272 } 273 274 linkmode_zero(pl->supported); 275 phylink_set(pl->supported, MII); 276 phylink_set(pl->supported, Autoneg); 277 phylink_set(pl->supported, Asym_Pause); 278 phylink_set(pl->supported, Pause); 279 pl->link_config.an_enabled = true; 280 pl->cfg_link_an_mode = MLO_AN_INBAND; 281 282 switch (pl->link_config.interface) { 283 case PHY_INTERFACE_MODE_SGMII: 284 case PHY_INTERFACE_MODE_QSGMII: 285 phylink_set(pl->supported, 10baseT_Half); 286 phylink_set(pl->supported, 10baseT_Full); 287 phylink_set(pl->supported, 100baseT_Half); 288 phylink_set(pl->supported, 100baseT_Full); 289 phylink_set(pl->supported, 1000baseT_Half); 290 phylink_set(pl->supported, 1000baseT_Full); 291 break; 292 293 case PHY_INTERFACE_MODE_1000BASEX: 294 phylink_set(pl->supported, 1000baseX_Full); 295 break; 296 297 case PHY_INTERFACE_MODE_2500BASEX: 298 phylink_set(pl->supported, 2500baseX_Full); 299 break; 300 301 case PHY_INTERFACE_MODE_USXGMII: 302 case PHY_INTERFACE_MODE_10GKR: 303 case PHY_INTERFACE_MODE_10GBASER: 304 phylink_set(pl->supported, 10baseT_Half); 305 phylink_set(pl->supported, 10baseT_Full); 306 phylink_set(pl->supported, 100baseT_Half); 307 phylink_set(pl->supported, 100baseT_Full); 308 phylink_set(pl->supported, 1000baseT_Half); 309 phylink_set(pl->supported, 1000baseT_Full); 310 phylink_set(pl->supported, 1000baseX_Full); 311 phylink_set(pl->supported, 2500baseT_Full); 312 phylink_set(pl->supported, 2500baseX_Full); 313 phylink_set(pl->supported, 5000baseT_Full); 314 phylink_set(pl->supported, 10000baseT_Full); 315 phylink_set(pl->supported, 10000baseKR_Full); 316 phylink_set(pl->supported, 10000baseCR_Full); 317 phylink_set(pl->supported, 10000baseSR_Full); 318 phylink_set(pl->supported, 10000baseLR_Full); 319 phylink_set(pl->supported, 10000baseLRM_Full); 320 phylink_set(pl->supported, 10000baseER_Full); 321 break; 322 323 default: 324 phylink_err(pl, 325 "incorrect link mode %s for in-band status\n", 326 phy_modes(pl->link_config.interface)); 327 return -EINVAL; 328 } 329 330 linkmode_copy(pl->link_config.advertising, pl->supported); 331 332 if (phylink_validate(pl, pl->supported, &pl->link_config)) { 333 phylink_err(pl, 334 "failed to validate link configuration for in-band status\n"); 335 return -EINVAL; 336 } 337 } 338 339 return 0; 340 } 341 342 static void phylink_mac_config(struct phylink *pl, 343 const struct phylink_link_state *state) 344 { 345 phylink_dbg(pl, 346 "%s: mode=%s/%s/%s/%s adv=%*pb pause=%02x link=%u an=%u\n", 347 __func__, phylink_an_mode_str(pl->cur_link_an_mode), 348 phy_modes(state->interface), 349 phy_speed_to_str(state->speed), 350 phy_duplex_to_str(state->duplex), 351 __ETHTOOL_LINK_MODE_MASK_NBITS, state->advertising, 352 state->pause, state->link, state->an_enabled); 353 354 pl->ops->mac_config(pl->config, pl->cur_link_an_mode, state); 355 } 356 357 static void phylink_mac_config_up(struct phylink *pl, 358 const struct phylink_link_state *state) 359 { 360 if (state->link) 361 phylink_mac_config(pl, state); 362 } 363 364 static void phylink_mac_an_restart(struct phylink *pl) 365 { 366 if (pl->link_config.an_enabled && 367 phy_interface_mode_is_8023z(pl->link_config.interface)) 368 pl->ops->mac_an_restart(pl->config); 369 } 370 371 static void phylink_mac_pcs_get_state(struct phylink *pl, 372 struct phylink_link_state *state) 373 { 374 linkmode_copy(state->advertising, pl->link_config.advertising); 375 linkmode_zero(state->lp_advertising); 376 state->interface = pl->link_config.interface; 377 state->an_enabled = pl->link_config.an_enabled; 378 state->speed = SPEED_UNKNOWN; 379 state->duplex = DUPLEX_UNKNOWN; 380 state->pause = MLO_PAUSE_NONE; 381 state->an_complete = 0; 382 state->link = 1; 383 384 pl->ops->mac_pcs_get_state(pl->config, state); 385 } 386 387 /* The fixed state is... fixed except for the link state, 388 * which may be determined by a GPIO or a callback. 389 */ 390 static void phylink_get_fixed_state(struct phylink *pl, struct phylink_link_state *state) 391 { 392 *state = pl->link_config; 393 if (pl->get_fixed_state) 394 pl->get_fixed_state(pl->netdev, state); 395 else if (pl->link_gpio) 396 state->link = !!gpiod_get_value_cansleep(pl->link_gpio); 397 } 398 399 /* Flow control is resolved according to our and the link partners 400 * advertisements using the following drawn from the 802.3 specs: 401 * Local device Link partner 402 * Pause AsymDir Pause AsymDir Result 403 * 1 X 1 X TX+RX 404 * 0 1 1 1 TX 405 * 1 1 0 1 RX 406 */ 407 static void phylink_resolve_flow(struct phylink *pl, 408 struct phylink_link_state *state) 409 { 410 int new_pause = 0; 411 412 if (pl->link_config.pause & MLO_PAUSE_AN) { 413 int pause = 0; 414 415 if (phylink_test(pl->link_config.advertising, Pause)) 416 pause |= MLO_PAUSE_SYM; 417 if (phylink_test(pl->link_config.advertising, Asym_Pause)) 418 pause |= MLO_PAUSE_ASYM; 419 420 pause &= state->pause; 421 422 if (pause & MLO_PAUSE_SYM) 423 new_pause = MLO_PAUSE_TX | MLO_PAUSE_RX; 424 else if (pause & MLO_PAUSE_ASYM) 425 new_pause = state->pause & MLO_PAUSE_SYM ? 426 MLO_PAUSE_TX : MLO_PAUSE_RX; 427 } else { 428 new_pause = pl->link_config.pause & MLO_PAUSE_TXRX_MASK; 429 } 430 431 state->pause &= ~MLO_PAUSE_TXRX_MASK; 432 state->pause |= new_pause; 433 } 434 435 static const char *phylink_pause_to_str(int pause) 436 { 437 switch (pause & MLO_PAUSE_TXRX_MASK) { 438 case MLO_PAUSE_TX | MLO_PAUSE_RX: 439 return "rx/tx"; 440 case MLO_PAUSE_TX: 441 return "tx"; 442 case MLO_PAUSE_RX: 443 return "rx"; 444 default: 445 return "off"; 446 } 447 } 448 449 static void phylink_mac_link_up(struct phylink *pl, 450 struct phylink_link_state link_state) 451 { 452 struct net_device *ndev = pl->netdev; 453 454 pl->cur_interface = link_state.interface; 455 pl->ops->mac_link_up(pl->config, pl->cur_link_an_mode, 456 pl->cur_interface, pl->phydev); 457 458 if (ndev) 459 netif_carrier_on(ndev); 460 461 phylink_info(pl, 462 "Link is Up - %s/%s - flow control %s\n", 463 phy_speed_to_str(link_state.speed), 464 phy_duplex_to_str(link_state.duplex), 465 phylink_pause_to_str(link_state.pause)); 466 } 467 468 static void phylink_mac_link_down(struct phylink *pl) 469 { 470 struct net_device *ndev = pl->netdev; 471 472 if (ndev) 473 netif_carrier_off(ndev); 474 pl->ops->mac_link_down(pl->config, pl->cur_link_an_mode, 475 pl->cur_interface); 476 phylink_info(pl, "Link is Down\n"); 477 } 478 479 static void phylink_resolve(struct work_struct *w) 480 { 481 struct phylink *pl = container_of(w, struct phylink, resolve); 482 struct phylink_link_state link_state; 483 struct net_device *ndev = pl->netdev; 484 int link_changed; 485 486 mutex_lock(&pl->state_mutex); 487 if (pl->phylink_disable_state) { 488 pl->mac_link_dropped = false; 489 link_state.link = false; 490 } else if (pl->mac_link_dropped) { 491 link_state.link = false; 492 } else { 493 switch (pl->cur_link_an_mode) { 494 case MLO_AN_PHY: 495 link_state = pl->phy_state; 496 phylink_resolve_flow(pl, &link_state); 497 phylink_mac_config_up(pl, &link_state); 498 break; 499 500 case MLO_AN_FIXED: 501 phylink_get_fixed_state(pl, &link_state); 502 phylink_mac_config_up(pl, &link_state); 503 break; 504 505 case MLO_AN_INBAND: 506 phylink_mac_pcs_get_state(pl, &link_state); 507 508 /* If we have a phy, the "up" state is the union of 509 * both the PHY and the MAC */ 510 if (pl->phydev) 511 link_state.link &= pl->phy_state.link; 512 513 /* Only update if the PHY link is up */ 514 if (pl->phydev && pl->phy_state.link) { 515 link_state.interface = pl->phy_state.interface; 516 517 /* If we have a PHY, we need to update with 518 * the pause mode bits. */ 519 link_state.pause |= pl->phy_state.pause; 520 phylink_resolve_flow(pl, &link_state); 521 phylink_mac_config(pl, &link_state); 522 } 523 break; 524 } 525 } 526 527 if (pl->netdev) 528 link_changed = (link_state.link != netif_carrier_ok(ndev)); 529 else 530 link_changed = (link_state.link != pl->old_link_state); 531 532 if (link_changed) { 533 pl->old_link_state = link_state.link; 534 if (!link_state.link) 535 phylink_mac_link_down(pl); 536 else 537 phylink_mac_link_up(pl, link_state); 538 } 539 if (!link_state.link && pl->mac_link_dropped) { 540 pl->mac_link_dropped = false; 541 queue_work(system_power_efficient_wq, &pl->resolve); 542 } 543 mutex_unlock(&pl->state_mutex); 544 } 545 546 static void phylink_run_resolve(struct phylink *pl) 547 { 548 if (!pl->phylink_disable_state) 549 queue_work(system_power_efficient_wq, &pl->resolve); 550 } 551 552 static void phylink_run_resolve_and_disable(struct phylink *pl, int bit) 553 { 554 unsigned long state = pl->phylink_disable_state; 555 556 set_bit(bit, &pl->phylink_disable_state); 557 if (state == 0) { 558 queue_work(system_power_efficient_wq, &pl->resolve); 559 flush_work(&pl->resolve); 560 } 561 } 562 563 static void phylink_fixed_poll(struct timer_list *t) 564 { 565 struct phylink *pl = container_of(t, struct phylink, link_poll); 566 567 mod_timer(t, jiffies + HZ); 568 569 phylink_run_resolve(pl); 570 } 571 572 static const struct sfp_upstream_ops sfp_phylink_ops; 573 574 static int phylink_register_sfp(struct phylink *pl, 575 struct fwnode_handle *fwnode) 576 { 577 struct sfp_bus *bus; 578 int ret; 579 580 if (!fwnode) 581 return 0; 582 583 bus = sfp_bus_find_fwnode(fwnode); 584 if (IS_ERR(bus)) { 585 ret = PTR_ERR(bus); 586 phylink_err(pl, "unable to attach SFP bus: %d\n", ret); 587 return ret; 588 } 589 590 pl->sfp_bus = bus; 591 592 ret = sfp_bus_add_upstream(bus, pl, &sfp_phylink_ops); 593 sfp_bus_put(bus); 594 595 return ret; 596 } 597 598 /** 599 * phylink_create() - create a phylink instance 600 * @config: a pointer to the target &struct phylink_config 601 * @fwnode: a pointer to a &struct fwnode_handle describing the network 602 * interface 603 * @iface: the desired link mode defined by &typedef phy_interface_t 604 * @ops: a pointer to a &struct phylink_mac_ops for the MAC. 605 * 606 * Create a new phylink instance, and parse the link parameters found in @np. 607 * This will parse in-band modes, fixed-link or SFP configuration. 608 * 609 * Note: the rtnl lock must not be held when calling this function. 610 * 611 * Returns a pointer to a &struct phylink, or an error-pointer value. Users 612 * must use IS_ERR() to check for errors from this function. 613 */ 614 struct phylink *phylink_create(struct phylink_config *config, 615 struct fwnode_handle *fwnode, 616 phy_interface_t iface, 617 const struct phylink_mac_ops *ops) 618 { 619 struct phylink *pl; 620 int ret; 621 622 pl = kzalloc(sizeof(*pl), GFP_KERNEL); 623 if (!pl) 624 return ERR_PTR(-ENOMEM); 625 626 mutex_init(&pl->state_mutex); 627 INIT_WORK(&pl->resolve, phylink_resolve); 628 629 pl->config = config; 630 if (config->type == PHYLINK_NETDEV) { 631 pl->netdev = to_net_dev(config->dev); 632 } else if (config->type == PHYLINK_DEV) { 633 pl->dev = config->dev; 634 } else { 635 kfree(pl); 636 return ERR_PTR(-EINVAL); 637 } 638 639 pl->phy_state.interface = iface; 640 pl->link_interface = iface; 641 if (iface == PHY_INTERFACE_MODE_MOCA) 642 pl->link_port = PORT_BNC; 643 else 644 pl->link_port = PORT_MII; 645 pl->link_config.interface = iface; 646 pl->link_config.pause = MLO_PAUSE_AN; 647 pl->link_config.speed = SPEED_UNKNOWN; 648 pl->link_config.duplex = DUPLEX_UNKNOWN; 649 pl->link_config.an_enabled = true; 650 pl->ops = ops; 651 __set_bit(PHYLINK_DISABLE_STOPPED, &pl->phylink_disable_state); 652 timer_setup(&pl->link_poll, phylink_fixed_poll, 0); 653 654 bitmap_fill(pl->supported, __ETHTOOL_LINK_MODE_MASK_NBITS); 655 linkmode_copy(pl->link_config.advertising, pl->supported); 656 phylink_validate(pl, pl->supported, &pl->link_config); 657 658 ret = phylink_parse_mode(pl, fwnode); 659 if (ret < 0) { 660 kfree(pl); 661 return ERR_PTR(ret); 662 } 663 664 if (pl->cfg_link_an_mode == MLO_AN_FIXED) { 665 ret = phylink_parse_fixedlink(pl, fwnode); 666 if (ret < 0) { 667 kfree(pl); 668 return ERR_PTR(ret); 669 } 670 } 671 672 pl->cur_link_an_mode = pl->cfg_link_an_mode; 673 674 ret = phylink_register_sfp(pl, fwnode); 675 if (ret < 0) { 676 kfree(pl); 677 return ERR_PTR(ret); 678 } 679 680 return pl; 681 } 682 EXPORT_SYMBOL_GPL(phylink_create); 683 684 /** 685 * phylink_destroy() - cleanup and destroy the phylink instance 686 * @pl: a pointer to a &struct phylink returned from phylink_create() 687 * 688 * Destroy a phylink instance. Any PHY that has been attached must have been 689 * cleaned up via phylink_disconnect_phy() prior to calling this function. 690 * 691 * Note: the rtnl lock must not be held when calling this function. 692 */ 693 void phylink_destroy(struct phylink *pl) 694 { 695 sfp_bus_del_upstream(pl->sfp_bus); 696 if (pl->link_gpio) 697 gpiod_put(pl->link_gpio); 698 699 cancel_work_sync(&pl->resolve); 700 kfree(pl); 701 } 702 EXPORT_SYMBOL_GPL(phylink_destroy); 703 704 static void phylink_phy_change(struct phy_device *phydev, bool up, 705 bool do_carrier) 706 { 707 struct phylink *pl = phydev->phylink; 708 709 mutex_lock(&pl->state_mutex); 710 pl->phy_state.speed = phydev->speed; 711 pl->phy_state.duplex = phydev->duplex; 712 pl->phy_state.pause = MLO_PAUSE_NONE; 713 if (phydev->pause) 714 pl->phy_state.pause |= MLO_PAUSE_SYM; 715 if (phydev->asym_pause) 716 pl->phy_state.pause |= MLO_PAUSE_ASYM; 717 pl->phy_state.interface = phydev->interface; 718 pl->phy_state.link = up; 719 mutex_unlock(&pl->state_mutex); 720 721 phylink_run_resolve(pl); 722 723 phylink_dbg(pl, "phy link %s %s/%s/%s\n", up ? "up" : "down", 724 phy_modes(phydev->interface), 725 phy_speed_to_str(phydev->speed), 726 phy_duplex_to_str(phydev->duplex)); 727 } 728 729 static int phylink_bringup_phy(struct phylink *pl, struct phy_device *phy, 730 phy_interface_t interface) 731 { 732 struct phylink_link_state config; 733 __ETHTOOL_DECLARE_LINK_MODE_MASK(supported); 734 char *irq_str; 735 int ret; 736 737 /* 738 * This is the new way of dealing with flow control for PHYs, 739 * as described by Timur Tabi in commit 529ed1275263 ("net: phy: 740 * phy drivers should not set SUPPORTED_[Asym_]Pause") except 741 * using our validate call to the MAC, we rely upon the MAC 742 * clearing the bits from both supported and advertising fields. 743 */ 744 phy_support_asym_pause(phy); 745 746 memset(&config, 0, sizeof(config)); 747 linkmode_copy(supported, phy->supported); 748 linkmode_copy(config.advertising, phy->advertising); 749 750 /* Clause 45 PHYs switch their Serdes lane between several different 751 * modes, normally 10GBASE-R, SGMII. Some use 2500BASE-X for 2.5G 752 * speeds. We really need to know which interface modes the PHY and 753 * MAC supports to properly work out which linkmodes can be supported. 754 */ 755 if (phy->is_c45 && 756 interface != PHY_INTERFACE_MODE_RXAUI && 757 interface != PHY_INTERFACE_MODE_XAUI && 758 interface != PHY_INTERFACE_MODE_USXGMII) 759 config.interface = PHY_INTERFACE_MODE_NA; 760 else 761 config.interface = interface; 762 763 ret = phylink_validate(pl, supported, &config); 764 if (ret) 765 return ret; 766 767 phy->phylink = pl; 768 phy->phy_link_change = phylink_phy_change; 769 770 irq_str = phy_attached_info_irq(phy); 771 phylink_info(pl, 772 "PHY [%s] driver [%s] (irq=%s)\n", 773 dev_name(&phy->mdio.dev), phy->drv->name, irq_str); 774 kfree(irq_str); 775 776 mutex_lock(&phy->lock); 777 mutex_lock(&pl->state_mutex); 778 pl->phydev = phy; 779 pl->phy_state.interface = interface; 780 linkmode_copy(pl->supported, supported); 781 linkmode_copy(pl->link_config.advertising, config.advertising); 782 783 /* Restrict the phy advertisement according to the MAC support. */ 784 linkmode_copy(phy->advertising, config.advertising); 785 mutex_unlock(&pl->state_mutex); 786 mutex_unlock(&phy->lock); 787 788 phylink_dbg(pl, 789 "phy: setting supported %*pb advertising %*pb\n", 790 __ETHTOOL_LINK_MODE_MASK_NBITS, pl->supported, 791 __ETHTOOL_LINK_MODE_MASK_NBITS, phy->advertising); 792 793 if (phy_interrupt_is_valid(phy)) 794 phy_request_interrupt(phy); 795 796 return 0; 797 } 798 799 static int phylink_attach_phy(struct phylink *pl, struct phy_device *phy, 800 phy_interface_t interface) 801 { 802 if (WARN_ON(pl->cfg_link_an_mode == MLO_AN_FIXED || 803 (pl->cfg_link_an_mode == MLO_AN_INBAND && 804 phy_interface_mode_is_8023z(interface)))) 805 return -EINVAL; 806 807 if (pl->phydev) 808 return -EBUSY; 809 810 return phy_attach_direct(pl->netdev, phy, 0, interface); 811 } 812 813 /** 814 * phylink_connect_phy() - connect a PHY to the phylink instance 815 * @pl: a pointer to a &struct phylink returned from phylink_create() 816 * @phy: a pointer to a &struct phy_device. 817 * 818 * Connect @phy to the phylink instance specified by @pl by calling 819 * phy_attach_direct(). Configure the @phy according to the MAC driver's 820 * capabilities, start the PHYLIB state machine and enable any interrupts 821 * that the PHY supports. 822 * 823 * This updates the phylink's ethtool supported and advertising link mode 824 * masks. 825 * 826 * Returns 0 on success or a negative errno. 827 */ 828 int phylink_connect_phy(struct phylink *pl, struct phy_device *phy) 829 { 830 int ret; 831 832 /* Use PHY device/driver interface */ 833 if (pl->link_interface == PHY_INTERFACE_MODE_NA) { 834 pl->link_interface = phy->interface; 835 pl->link_config.interface = pl->link_interface; 836 } 837 838 ret = phylink_attach_phy(pl, phy, pl->link_interface); 839 if (ret < 0) 840 return ret; 841 842 ret = phylink_bringup_phy(pl, phy, pl->link_config.interface); 843 if (ret) 844 phy_detach(phy); 845 846 return ret; 847 } 848 EXPORT_SYMBOL_GPL(phylink_connect_phy); 849 850 /** 851 * phylink_of_phy_connect() - connect the PHY specified in the DT mode. 852 * @pl: a pointer to a &struct phylink returned from phylink_create() 853 * @dn: a pointer to a &struct device_node. 854 * @flags: PHY-specific flags to communicate to the PHY device driver 855 * 856 * Connect the phy specified in the device node @dn to the phylink instance 857 * specified by @pl. Actions specified in phylink_connect_phy() will be 858 * performed. 859 * 860 * Returns 0 on success or a negative errno. 861 */ 862 int phylink_of_phy_connect(struct phylink *pl, struct device_node *dn, 863 u32 flags) 864 { 865 struct device_node *phy_node; 866 struct phy_device *phy_dev; 867 int ret; 868 869 /* Fixed links and 802.3z are handled without needing a PHY */ 870 if (pl->cfg_link_an_mode == MLO_AN_FIXED || 871 (pl->cfg_link_an_mode == MLO_AN_INBAND && 872 phy_interface_mode_is_8023z(pl->link_interface))) 873 return 0; 874 875 phy_node = of_parse_phandle(dn, "phy-handle", 0); 876 if (!phy_node) 877 phy_node = of_parse_phandle(dn, "phy", 0); 878 if (!phy_node) 879 phy_node = of_parse_phandle(dn, "phy-device", 0); 880 881 if (!phy_node) { 882 if (pl->cfg_link_an_mode == MLO_AN_PHY) 883 return -ENODEV; 884 return 0; 885 } 886 887 phy_dev = of_phy_find_device(phy_node); 888 /* We're done with the phy_node handle */ 889 of_node_put(phy_node); 890 if (!phy_dev) 891 return -ENODEV; 892 893 ret = phy_attach_direct(pl->netdev, phy_dev, flags, 894 pl->link_interface); 895 if (ret) 896 return ret; 897 898 ret = phylink_bringup_phy(pl, phy_dev, pl->link_config.interface); 899 if (ret) 900 phy_detach(phy_dev); 901 902 return ret; 903 } 904 EXPORT_SYMBOL_GPL(phylink_of_phy_connect); 905 906 /** 907 * phylink_disconnect_phy() - disconnect any PHY attached to the phylink 908 * instance. 909 * @pl: a pointer to a &struct phylink returned from phylink_create() 910 * 911 * Disconnect any current PHY from the phylink instance described by @pl. 912 */ 913 void phylink_disconnect_phy(struct phylink *pl) 914 { 915 struct phy_device *phy; 916 917 ASSERT_RTNL(); 918 919 phy = pl->phydev; 920 if (phy) { 921 mutex_lock(&phy->lock); 922 mutex_lock(&pl->state_mutex); 923 pl->phydev = NULL; 924 mutex_unlock(&pl->state_mutex); 925 mutex_unlock(&phy->lock); 926 flush_work(&pl->resolve); 927 928 phy_disconnect(phy); 929 } 930 } 931 EXPORT_SYMBOL_GPL(phylink_disconnect_phy); 932 933 /** 934 * phylink_fixed_state_cb() - allow setting a fixed link callback 935 * @pl: a pointer to a &struct phylink returned from phylink_create() 936 * @cb: callback to execute to determine the fixed link state. 937 * 938 * The MAC driver should call this driver when the state of its link 939 * can be determined through e.g: an out of band MMIO register. 940 */ 941 int phylink_fixed_state_cb(struct phylink *pl, 942 void (*cb)(struct net_device *dev, 943 struct phylink_link_state *state)) 944 { 945 /* It does not make sense to let the link be overriden unless we use 946 * MLO_AN_FIXED 947 */ 948 if (pl->cfg_link_an_mode != MLO_AN_FIXED) 949 return -EINVAL; 950 951 mutex_lock(&pl->state_mutex); 952 pl->get_fixed_state = cb; 953 mutex_unlock(&pl->state_mutex); 954 955 return 0; 956 } 957 EXPORT_SYMBOL_GPL(phylink_fixed_state_cb); 958 959 /** 960 * phylink_mac_change() - notify phylink of a change in MAC state 961 * @pl: a pointer to a &struct phylink returned from phylink_create() 962 * @up: indicates whether the link is currently up. 963 * 964 * The MAC driver should call this driver when the state of its link 965 * changes (eg, link failure, new negotiation results, etc.) 966 */ 967 void phylink_mac_change(struct phylink *pl, bool up) 968 { 969 if (!up) 970 pl->mac_link_dropped = true; 971 phylink_run_resolve(pl); 972 phylink_dbg(pl, "mac link %s\n", up ? "up" : "down"); 973 } 974 EXPORT_SYMBOL_GPL(phylink_mac_change); 975 976 static irqreturn_t phylink_link_handler(int irq, void *data) 977 { 978 struct phylink *pl = data; 979 980 phylink_run_resolve(pl); 981 982 return IRQ_HANDLED; 983 } 984 985 /** 986 * phylink_start() - start a phylink instance 987 * @pl: a pointer to a &struct phylink returned from phylink_create() 988 * 989 * Start the phylink instance specified by @pl, configuring the MAC for the 990 * desired link mode(s) and negotiation style. This should be called from the 991 * network device driver's &struct net_device_ops ndo_open() method. 992 */ 993 void phylink_start(struct phylink *pl) 994 { 995 ASSERT_RTNL(); 996 997 phylink_info(pl, "configuring for %s/%s link mode\n", 998 phylink_an_mode_str(pl->cur_link_an_mode), 999 phy_modes(pl->link_config.interface)); 1000 1001 /* Always set the carrier off */ 1002 if (pl->netdev) 1003 netif_carrier_off(pl->netdev); 1004 1005 /* Apply the link configuration to the MAC when starting. This allows 1006 * a fixed-link to start with the correct parameters, and also 1007 * ensures that we set the appropriate advertisement for Serdes links. 1008 */ 1009 phylink_resolve_flow(pl, &pl->link_config); 1010 phylink_mac_config(pl, &pl->link_config); 1011 1012 /* Restart autonegotiation if using 802.3z to ensure that the link 1013 * parameters are properly negotiated. This is necessary for DSA 1014 * switches using 802.3z negotiation to ensure they see our modes. 1015 */ 1016 phylink_mac_an_restart(pl); 1017 1018 clear_bit(PHYLINK_DISABLE_STOPPED, &pl->phylink_disable_state); 1019 phylink_run_resolve(pl); 1020 1021 if (pl->cfg_link_an_mode == MLO_AN_FIXED && pl->link_gpio) { 1022 int irq = gpiod_to_irq(pl->link_gpio); 1023 1024 if (irq > 0) { 1025 if (!request_irq(irq, phylink_link_handler, 1026 IRQF_TRIGGER_RISING | 1027 IRQF_TRIGGER_FALLING, 1028 "netdev link", pl)) 1029 pl->link_irq = irq; 1030 else 1031 irq = 0; 1032 } 1033 if (irq <= 0) 1034 mod_timer(&pl->link_poll, jiffies + HZ); 1035 } 1036 if ((pl->cfg_link_an_mode == MLO_AN_FIXED && pl->get_fixed_state) || 1037 pl->config->pcs_poll) 1038 mod_timer(&pl->link_poll, jiffies + HZ); 1039 if (pl->phydev) 1040 phy_start(pl->phydev); 1041 if (pl->sfp_bus) 1042 sfp_upstream_start(pl->sfp_bus); 1043 } 1044 EXPORT_SYMBOL_GPL(phylink_start); 1045 1046 /** 1047 * phylink_stop() - stop a phylink instance 1048 * @pl: a pointer to a &struct phylink returned from phylink_create() 1049 * 1050 * Stop the phylink instance specified by @pl. This should be called from the 1051 * network device driver's &struct net_device_ops ndo_stop() method. The 1052 * network device's carrier state should not be changed prior to calling this 1053 * function. 1054 */ 1055 void phylink_stop(struct phylink *pl) 1056 { 1057 ASSERT_RTNL(); 1058 1059 if (pl->sfp_bus) 1060 sfp_upstream_stop(pl->sfp_bus); 1061 if (pl->phydev) 1062 phy_stop(pl->phydev); 1063 del_timer_sync(&pl->link_poll); 1064 if (pl->link_irq) { 1065 free_irq(pl->link_irq, pl); 1066 pl->link_irq = 0; 1067 } 1068 1069 phylink_run_resolve_and_disable(pl, PHYLINK_DISABLE_STOPPED); 1070 } 1071 EXPORT_SYMBOL_GPL(phylink_stop); 1072 1073 /** 1074 * phylink_ethtool_get_wol() - get the wake on lan parameters for the PHY 1075 * @pl: a pointer to a &struct phylink returned from phylink_create() 1076 * @wol: a pointer to &struct ethtool_wolinfo to hold the read parameters 1077 * 1078 * Read the wake on lan parameters from the PHY attached to the phylink 1079 * instance specified by @pl. If no PHY is currently attached, report no 1080 * support for wake on lan. 1081 */ 1082 void phylink_ethtool_get_wol(struct phylink *pl, struct ethtool_wolinfo *wol) 1083 { 1084 ASSERT_RTNL(); 1085 1086 wol->supported = 0; 1087 wol->wolopts = 0; 1088 1089 if (pl->phydev) 1090 phy_ethtool_get_wol(pl->phydev, wol); 1091 } 1092 EXPORT_SYMBOL_GPL(phylink_ethtool_get_wol); 1093 1094 /** 1095 * phylink_ethtool_set_wol() - set wake on lan parameters 1096 * @pl: a pointer to a &struct phylink returned from phylink_create() 1097 * @wol: a pointer to &struct ethtool_wolinfo for the desired parameters 1098 * 1099 * Set the wake on lan parameters for the PHY attached to the phylink 1100 * instance specified by @pl. If no PHY is attached, returns %EOPNOTSUPP 1101 * error. 1102 * 1103 * Returns zero on success or negative errno code. 1104 */ 1105 int phylink_ethtool_set_wol(struct phylink *pl, struct ethtool_wolinfo *wol) 1106 { 1107 int ret = -EOPNOTSUPP; 1108 1109 ASSERT_RTNL(); 1110 1111 if (pl->phydev) 1112 ret = phy_ethtool_set_wol(pl->phydev, wol); 1113 1114 return ret; 1115 } 1116 EXPORT_SYMBOL_GPL(phylink_ethtool_set_wol); 1117 1118 static void phylink_merge_link_mode(unsigned long *dst, const unsigned long *b) 1119 { 1120 __ETHTOOL_DECLARE_LINK_MODE_MASK(mask); 1121 1122 linkmode_zero(mask); 1123 phylink_set_port_modes(mask); 1124 1125 linkmode_and(dst, dst, mask); 1126 linkmode_or(dst, dst, b); 1127 } 1128 1129 static void phylink_get_ksettings(const struct phylink_link_state *state, 1130 struct ethtool_link_ksettings *kset) 1131 { 1132 phylink_merge_link_mode(kset->link_modes.advertising, state->advertising); 1133 linkmode_copy(kset->link_modes.lp_advertising, state->lp_advertising); 1134 kset->base.speed = state->speed; 1135 kset->base.duplex = state->duplex; 1136 kset->base.autoneg = state->an_enabled ? AUTONEG_ENABLE : 1137 AUTONEG_DISABLE; 1138 } 1139 1140 /** 1141 * phylink_ethtool_ksettings_get() - get the current link settings 1142 * @pl: a pointer to a &struct phylink returned from phylink_create() 1143 * @kset: a pointer to a &struct ethtool_link_ksettings to hold link settings 1144 * 1145 * Read the current link settings for the phylink instance specified by @pl. 1146 * This will be the link settings read from the MAC, PHY or fixed link 1147 * settings depending on the current negotiation mode. 1148 */ 1149 int phylink_ethtool_ksettings_get(struct phylink *pl, 1150 struct ethtool_link_ksettings *kset) 1151 { 1152 struct phylink_link_state link_state; 1153 1154 ASSERT_RTNL(); 1155 1156 if (pl->phydev) { 1157 phy_ethtool_ksettings_get(pl->phydev, kset); 1158 } else { 1159 kset->base.port = pl->link_port; 1160 } 1161 1162 linkmode_copy(kset->link_modes.supported, pl->supported); 1163 1164 switch (pl->cur_link_an_mode) { 1165 case MLO_AN_FIXED: 1166 /* We are using fixed settings. Report these as the 1167 * current link settings - and note that these also 1168 * represent the supported speeds/duplex/pause modes. 1169 */ 1170 phylink_get_fixed_state(pl, &link_state); 1171 phylink_get_ksettings(&link_state, kset); 1172 break; 1173 1174 case MLO_AN_INBAND: 1175 /* If there is a phy attached, then use the reported 1176 * settings from the phy with no modification. 1177 */ 1178 if (pl->phydev) 1179 break; 1180 1181 phylink_mac_pcs_get_state(pl, &link_state); 1182 1183 /* The MAC is reporting the link results from its own PCS 1184 * layer via in-band status. Report these as the current 1185 * link settings. 1186 */ 1187 phylink_get_ksettings(&link_state, kset); 1188 break; 1189 } 1190 1191 return 0; 1192 } 1193 EXPORT_SYMBOL_GPL(phylink_ethtool_ksettings_get); 1194 1195 /** 1196 * phylink_ethtool_ksettings_set() - set the link settings 1197 * @pl: a pointer to a &struct phylink returned from phylink_create() 1198 * @kset: a pointer to a &struct ethtool_link_ksettings for the desired modes 1199 */ 1200 int phylink_ethtool_ksettings_set(struct phylink *pl, 1201 const struct ethtool_link_ksettings *kset) 1202 { 1203 __ETHTOOL_DECLARE_LINK_MODE_MASK(support); 1204 struct ethtool_link_ksettings our_kset; 1205 struct phylink_link_state config; 1206 int ret; 1207 1208 ASSERT_RTNL(); 1209 1210 if (kset->base.autoneg != AUTONEG_DISABLE && 1211 kset->base.autoneg != AUTONEG_ENABLE) 1212 return -EINVAL; 1213 1214 linkmode_copy(support, pl->supported); 1215 config = pl->link_config; 1216 1217 /* Mask out unsupported advertisements */ 1218 linkmode_and(config.advertising, kset->link_modes.advertising, 1219 support); 1220 1221 /* FIXME: should we reject autoneg if phy/mac does not support it? */ 1222 if (kset->base.autoneg == AUTONEG_DISABLE) { 1223 const struct phy_setting *s; 1224 1225 /* Autonegotiation disabled, select a suitable speed and 1226 * duplex. 1227 */ 1228 s = phy_lookup_setting(kset->base.speed, kset->base.duplex, 1229 support, false); 1230 if (!s) 1231 return -EINVAL; 1232 1233 /* If we have a fixed link (as specified by firmware), refuse 1234 * to change link parameters. 1235 */ 1236 if (pl->cur_link_an_mode == MLO_AN_FIXED && 1237 (s->speed != pl->link_config.speed || 1238 s->duplex != pl->link_config.duplex)) 1239 return -EINVAL; 1240 1241 config.speed = s->speed; 1242 config.duplex = s->duplex; 1243 config.an_enabled = false; 1244 1245 __clear_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, config.advertising); 1246 } else { 1247 /* If we have a fixed link, refuse to enable autonegotiation */ 1248 if (pl->cur_link_an_mode == MLO_AN_FIXED) 1249 return -EINVAL; 1250 1251 config.speed = SPEED_UNKNOWN; 1252 config.duplex = DUPLEX_UNKNOWN; 1253 config.an_enabled = true; 1254 1255 __set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, config.advertising); 1256 } 1257 1258 if (pl->phydev) { 1259 /* If we have a PHY, we process the kset change via phylib. 1260 * phylib will call our link state function if the PHY 1261 * parameters have changed, which will trigger a resolve 1262 * and update the MAC configuration. 1263 */ 1264 our_kset = *kset; 1265 linkmode_copy(our_kset.link_modes.advertising, 1266 config.advertising); 1267 our_kset.base.speed = config.speed; 1268 our_kset.base.duplex = config.duplex; 1269 1270 ret = phy_ethtool_ksettings_set(pl->phydev, &our_kset); 1271 if (ret) 1272 return ret; 1273 1274 mutex_lock(&pl->state_mutex); 1275 /* Save the new configuration */ 1276 linkmode_copy(pl->link_config.advertising, 1277 our_kset.link_modes.advertising); 1278 pl->link_config.interface = config.interface; 1279 pl->link_config.speed = our_kset.base.speed; 1280 pl->link_config.duplex = our_kset.base.duplex; 1281 pl->link_config.an_enabled = our_kset.base.autoneg != 1282 AUTONEG_DISABLE; 1283 mutex_unlock(&pl->state_mutex); 1284 } else { 1285 /* For a fixed link, this isn't able to change any parameters, 1286 * which just leaves inband mode. 1287 */ 1288 if (phylink_validate(pl, support, &config)) 1289 return -EINVAL; 1290 1291 /* If autonegotiation is enabled, we must have an advertisement */ 1292 if (config.an_enabled && 1293 phylink_is_empty_linkmode(config.advertising)) 1294 return -EINVAL; 1295 1296 mutex_lock(&pl->state_mutex); 1297 linkmode_copy(pl->link_config.advertising, config.advertising); 1298 pl->link_config.interface = config.interface; 1299 pl->link_config.speed = config.speed; 1300 pl->link_config.duplex = config.duplex; 1301 pl->link_config.an_enabled = kset->base.autoneg != 1302 AUTONEG_DISABLE; 1303 1304 if (pl->cur_link_an_mode == MLO_AN_INBAND && 1305 !test_bit(PHYLINK_DISABLE_STOPPED, 1306 &pl->phylink_disable_state)) { 1307 /* If in 802.3z mode, this updates the advertisement. 1308 * 1309 * If we are in SGMII mode without a PHY, there is no 1310 * advertisement; the only thing we have is the pause 1311 * modes which can only come from a PHY. 1312 */ 1313 phylink_mac_config(pl, &pl->link_config); 1314 phylink_mac_an_restart(pl); 1315 } 1316 mutex_unlock(&pl->state_mutex); 1317 } 1318 1319 return 0; 1320 } 1321 EXPORT_SYMBOL_GPL(phylink_ethtool_ksettings_set); 1322 1323 /** 1324 * phylink_ethtool_nway_reset() - restart negotiation 1325 * @pl: a pointer to a &struct phylink returned from phylink_create() 1326 * 1327 * Restart negotiation for the phylink instance specified by @pl. This will 1328 * cause any attached phy to restart negotiation with the link partner, and 1329 * if the MAC is in a BaseX mode, the MAC will also be requested to restart 1330 * negotiation. 1331 * 1332 * Returns zero on success, or negative error code. 1333 */ 1334 int phylink_ethtool_nway_reset(struct phylink *pl) 1335 { 1336 int ret = 0; 1337 1338 ASSERT_RTNL(); 1339 1340 if (pl->phydev) 1341 ret = phy_restart_aneg(pl->phydev); 1342 phylink_mac_an_restart(pl); 1343 1344 return ret; 1345 } 1346 EXPORT_SYMBOL_GPL(phylink_ethtool_nway_reset); 1347 1348 /** 1349 * phylink_ethtool_get_pauseparam() - get the current pause parameters 1350 * @pl: a pointer to a &struct phylink returned from phylink_create() 1351 * @pause: a pointer to a &struct ethtool_pauseparam 1352 */ 1353 void phylink_ethtool_get_pauseparam(struct phylink *pl, 1354 struct ethtool_pauseparam *pause) 1355 { 1356 ASSERT_RTNL(); 1357 1358 pause->autoneg = !!(pl->link_config.pause & MLO_PAUSE_AN); 1359 pause->rx_pause = !!(pl->link_config.pause & MLO_PAUSE_RX); 1360 pause->tx_pause = !!(pl->link_config.pause & MLO_PAUSE_TX); 1361 } 1362 EXPORT_SYMBOL_GPL(phylink_ethtool_get_pauseparam); 1363 1364 /** 1365 * phylink_ethtool_set_pauseparam() - set the current pause parameters 1366 * @pl: a pointer to a &struct phylink returned from phylink_create() 1367 * @pause: a pointer to a &struct ethtool_pauseparam 1368 */ 1369 int phylink_ethtool_set_pauseparam(struct phylink *pl, 1370 struct ethtool_pauseparam *pause) 1371 { 1372 struct phylink_link_state *config = &pl->link_config; 1373 1374 ASSERT_RTNL(); 1375 1376 if (!phylink_test(pl->supported, Pause) && 1377 !phylink_test(pl->supported, Asym_Pause)) 1378 return -EOPNOTSUPP; 1379 1380 if (!phylink_test(pl->supported, Asym_Pause) && 1381 !pause->autoneg && pause->rx_pause != pause->tx_pause) 1382 return -EINVAL; 1383 1384 config->pause &= ~(MLO_PAUSE_AN | MLO_PAUSE_TXRX_MASK); 1385 1386 if (pause->autoneg) 1387 config->pause |= MLO_PAUSE_AN; 1388 if (pause->rx_pause) 1389 config->pause |= MLO_PAUSE_RX; 1390 if (pause->tx_pause) 1391 config->pause |= MLO_PAUSE_TX; 1392 1393 /* If we have a PHY, phylib will call our link state function if the 1394 * mode has changed, which will trigger a resolve and update the MAC 1395 * configuration. 1396 */ 1397 if (pl->phydev) { 1398 phy_set_asym_pause(pl->phydev, pause->rx_pause, 1399 pause->tx_pause); 1400 } else if (!test_bit(PHYLINK_DISABLE_STOPPED, 1401 &pl->phylink_disable_state)) { 1402 switch (pl->cur_link_an_mode) { 1403 case MLO_AN_FIXED: 1404 /* Should we allow fixed links to change against the config? */ 1405 phylink_resolve_flow(pl, config); 1406 phylink_mac_config(pl, config); 1407 break; 1408 1409 case MLO_AN_INBAND: 1410 phylink_mac_config(pl, config); 1411 phylink_mac_an_restart(pl); 1412 break; 1413 } 1414 } 1415 1416 return 0; 1417 } 1418 EXPORT_SYMBOL_GPL(phylink_ethtool_set_pauseparam); 1419 1420 /** 1421 * phylink_ethtool_get_eee_err() - read the energy efficient ethernet error 1422 * counter 1423 * @pl: a pointer to a &struct phylink returned from phylink_create(). 1424 * 1425 * Read the Energy Efficient Ethernet error counter from the PHY associated 1426 * with the phylink instance specified by @pl. 1427 * 1428 * Returns positive error counter value, or negative error code. 1429 */ 1430 int phylink_get_eee_err(struct phylink *pl) 1431 { 1432 int ret = 0; 1433 1434 ASSERT_RTNL(); 1435 1436 if (pl->phydev) 1437 ret = phy_get_eee_err(pl->phydev); 1438 1439 return ret; 1440 } 1441 EXPORT_SYMBOL_GPL(phylink_get_eee_err); 1442 1443 /** 1444 * phylink_init_eee() - init and check the EEE features 1445 * @pl: a pointer to a &struct phylink returned from phylink_create() 1446 * @clk_stop_enable: allow PHY to stop receive clock 1447 * 1448 * Must be called either with RTNL held or within mac_link_up() 1449 */ 1450 int phylink_init_eee(struct phylink *pl, bool clk_stop_enable) 1451 { 1452 int ret = -EOPNOTSUPP; 1453 1454 if (pl->phydev) 1455 ret = phy_init_eee(pl->phydev, clk_stop_enable); 1456 1457 return ret; 1458 } 1459 EXPORT_SYMBOL_GPL(phylink_init_eee); 1460 1461 /** 1462 * phylink_ethtool_get_eee() - read the energy efficient ethernet parameters 1463 * @pl: a pointer to a &struct phylink returned from phylink_create() 1464 * @eee: a pointer to a &struct ethtool_eee for the read parameters 1465 */ 1466 int phylink_ethtool_get_eee(struct phylink *pl, struct ethtool_eee *eee) 1467 { 1468 int ret = -EOPNOTSUPP; 1469 1470 ASSERT_RTNL(); 1471 1472 if (pl->phydev) 1473 ret = phy_ethtool_get_eee(pl->phydev, eee); 1474 1475 return ret; 1476 } 1477 EXPORT_SYMBOL_GPL(phylink_ethtool_get_eee); 1478 1479 /** 1480 * phylink_ethtool_set_eee() - set the energy efficient ethernet parameters 1481 * @pl: a pointer to a &struct phylink returned from phylink_create() 1482 * @eee: a pointer to a &struct ethtool_eee for the desired parameters 1483 */ 1484 int phylink_ethtool_set_eee(struct phylink *pl, struct ethtool_eee *eee) 1485 { 1486 int ret = -EOPNOTSUPP; 1487 1488 ASSERT_RTNL(); 1489 1490 if (pl->phydev) 1491 ret = phy_ethtool_set_eee(pl->phydev, eee); 1492 1493 return ret; 1494 } 1495 EXPORT_SYMBOL_GPL(phylink_ethtool_set_eee); 1496 1497 /* This emulates MII registers for a fixed-mode phy operating as per the 1498 * passed in state. "aneg" defines if we report negotiation is possible. 1499 * 1500 * FIXME: should deal with negotiation state too. 1501 */ 1502 static int phylink_mii_emul_read(unsigned int reg, 1503 struct phylink_link_state *state) 1504 { 1505 struct fixed_phy_status fs; 1506 int val; 1507 1508 fs.link = state->link; 1509 fs.speed = state->speed; 1510 fs.duplex = state->duplex; 1511 fs.pause = state->pause & MLO_PAUSE_SYM; 1512 fs.asym_pause = state->pause & MLO_PAUSE_ASYM; 1513 1514 val = swphy_read_reg(reg, &fs); 1515 if (reg == MII_BMSR) { 1516 if (!state->an_complete) 1517 val &= ~BMSR_ANEGCOMPLETE; 1518 } 1519 return val; 1520 } 1521 1522 static int phylink_phy_read(struct phylink *pl, unsigned int phy_id, 1523 unsigned int reg) 1524 { 1525 struct phy_device *phydev = pl->phydev; 1526 int prtad, devad; 1527 1528 if (mdio_phy_id_is_c45(phy_id)) { 1529 prtad = mdio_phy_id_prtad(phy_id); 1530 devad = mdio_phy_id_devad(phy_id); 1531 devad = MII_ADDR_C45 | devad << 16 | reg; 1532 } else if (phydev->is_c45) { 1533 switch (reg) { 1534 case MII_BMCR: 1535 case MII_BMSR: 1536 case MII_PHYSID1: 1537 case MII_PHYSID2: 1538 devad = __ffs(phydev->c45_ids.devices_in_package); 1539 break; 1540 case MII_ADVERTISE: 1541 case MII_LPA: 1542 if (!(phydev->c45_ids.devices_in_package & MDIO_DEVS_AN)) 1543 return -EINVAL; 1544 devad = MDIO_MMD_AN; 1545 if (reg == MII_ADVERTISE) 1546 reg = MDIO_AN_ADVERTISE; 1547 else 1548 reg = MDIO_AN_LPA; 1549 break; 1550 default: 1551 return -EINVAL; 1552 } 1553 prtad = phy_id; 1554 devad = MII_ADDR_C45 | devad << 16 | reg; 1555 } else { 1556 prtad = phy_id; 1557 devad = reg; 1558 } 1559 return mdiobus_read(pl->phydev->mdio.bus, prtad, devad); 1560 } 1561 1562 static int phylink_phy_write(struct phylink *pl, unsigned int phy_id, 1563 unsigned int reg, unsigned int val) 1564 { 1565 struct phy_device *phydev = pl->phydev; 1566 int prtad, devad; 1567 1568 if (mdio_phy_id_is_c45(phy_id)) { 1569 prtad = mdio_phy_id_prtad(phy_id); 1570 devad = mdio_phy_id_devad(phy_id); 1571 devad = MII_ADDR_C45 | devad << 16 | reg; 1572 } else if (phydev->is_c45) { 1573 switch (reg) { 1574 case MII_BMCR: 1575 case MII_BMSR: 1576 case MII_PHYSID1: 1577 case MII_PHYSID2: 1578 devad = __ffs(phydev->c45_ids.devices_in_package); 1579 break; 1580 case MII_ADVERTISE: 1581 case MII_LPA: 1582 if (!(phydev->c45_ids.devices_in_package & MDIO_DEVS_AN)) 1583 return -EINVAL; 1584 devad = MDIO_MMD_AN; 1585 if (reg == MII_ADVERTISE) 1586 reg = MDIO_AN_ADVERTISE; 1587 else 1588 reg = MDIO_AN_LPA; 1589 break; 1590 default: 1591 return -EINVAL; 1592 } 1593 prtad = phy_id; 1594 devad = MII_ADDR_C45 | devad << 16 | reg; 1595 } else { 1596 prtad = phy_id; 1597 devad = reg; 1598 } 1599 1600 return mdiobus_write(phydev->mdio.bus, prtad, devad, val); 1601 } 1602 1603 static int phylink_mii_read(struct phylink *pl, unsigned int phy_id, 1604 unsigned int reg) 1605 { 1606 struct phylink_link_state state; 1607 int val = 0xffff; 1608 1609 switch (pl->cur_link_an_mode) { 1610 case MLO_AN_FIXED: 1611 if (phy_id == 0) { 1612 phylink_get_fixed_state(pl, &state); 1613 val = phylink_mii_emul_read(reg, &state); 1614 } 1615 break; 1616 1617 case MLO_AN_PHY: 1618 return -EOPNOTSUPP; 1619 1620 case MLO_AN_INBAND: 1621 if (phy_id == 0) { 1622 phylink_mac_pcs_get_state(pl, &state); 1623 val = phylink_mii_emul_read(reg, &state); 1624 } 1625 break; 1626 } 1627 1628 return val & 0xffff; 1629 } 1630 1631 static int phylink_mii_write(struct phylink *pl, unsigned int phy_id, 1632 unsigned int reg, unsigned int val) 1633 { 1634 switch (pl->cur_link_an_mode) { 1635 case MLO_AN_FIXED: 1636 break; 1637 1638 case MLO_AN_PHY: 1639 return -EOPNOTSUPP; 1640 1641 case MLO_AN_INBAND: 1642 break; 1643 } 1644 1645 return 0; 1646 } 1647 1648 /** 1649 * phylink_mii_ioctl() - generic mii ioctl interface 1650 * @pl: a pointer to a &struct phylink returned from phylink_create() 1651 * @ifr: a pointer to a &struct ifreq for socket ioctls 1652 * @cmd: ioctl cmd to execute 1653 * 1654 * Perform the specified MII ioctl on the PHY attached to the phylink instance 1655 * specified by @pl. If no PHY is attached, emulate the presence of the PHY. 1656 * 1657 * Returns: zero on success or negative error code. 1658 * 1659 * %SIOCGMIIPHY: 1660 * read register from the current PHY. 1661 * %SIOCGMIIREG: 1662 * read register from the specified PHY. 1663 * %SIOCSMIIREG: 1664 * set a register on the specified PHY. 1665 */ 1666 int phylink_mii_ioctl(struct phylink *pl, struct ifreq *ifr, int cmd) 1667 { 1668 struct mii_ioctl_data *mii = if_mii(ifr); 1669 int ret; 1670 1671 ASSERT_RTNL(); 1672 1673 if (pl->phydev) { 1674 /* PHYs only exist for MLO_AN_PHY and SGMII */ 1675 switch (cmd) { 1676 case SIOCGMIIPHY: 1677 mii->phy_id = pl->phydev->mdio.addr; 1678 /* fall through */ 1679 1680 case SIOCGMIIREG: 1681 ret = phylink_phy_read(pl, mii->phy_id, mii->reg_num); 1682 if (ret >= 0) { 1683 mii->val_out = ret; 1684 ret = 0; 1685 } 1686 break; 1687 1688 case SIOCSMIIREG: 1689 ret = phylink_phy_write(pl, mii->phy_id, mii->reg_num, 1690 mii->val_in); 1691 break; 1692 1693 default: 1694 ret = phy_mii_ioctl(pl->phydev, ifr, cmd); 1695 break; 1696 } 1697 } else { 1698 switch (cmd) { 1699 case SIOCGMIIPHY: 1700 mii->phy_id = 0; 1701 /* fall through */ 1702 1703 case SIOCGMIIREG: 1704 ret = phylink_mii_read(pl, mii->phy_id, mii->reg_num); 1705 if (ret >= 0) { 1706 mii->val_out = ret; 1707 ret = 0; 1708 } 1709 break; 1710 1711 case SIOCSMIIREG: 1712 ret = phylink_mii_write(pl, mii->phy_id, mii->reg_num, 1713 mii->val_in); 1714 break; 1715 1716 default: 1717 ret = -EOPNOTSUPP; 1718 break; 1719 } 1720 } 1721 1722 return ret; 1723 } 1724 EXPORT_SYMBOL_GPL(phylink_mii_ioctl); 1725 1726 static void phylink_sfp_attach(void *upstream, struct sfp_bus *bus) 1727 { 1728 struct phylink *pl = upstream; 1729 1730 pl->netdev->sfp_bus = bus; 1731 } 1732 1733 static void phylink_sfp_detach(void *upstream, struct sfp_bus *bus) 1734 { 1735 struct phylink *pl = upstream; 1736 1737 pl->netdev->sfp_bus = NULL; 1738 } 1739 1740 static int phylink_sfp_config(struct phylink *pl, u8 mode, 1741 const unsigned long *supported, 1742 const unsigned long *advertising) 1743 { 1744 __ETHTOOL_DECLARE_LINK_MODE_MASK(support1); 1745 __ETHTOOL_DECLARE_LINK_MODE_MASK(support); 1746 struct phylink_link_state config; 1747 phy_interface_t iface; 1748 bool changed; 1749 int ret; 1750 1751 linkmode_copy(support, supported); 1752 1753 memset(&config, 0, sizeof(config)); 1754 linkmode_copy(config.advertising, advertising); 1755 config.interface = PHY_INTERFACE_MODE_NA; 1756 config.speed = SPEED_UNKNOWN; 1757 config.duplex = DUPLEX_UNKNOWN; 1758 config.pause = MLO_PAUSE_AN; 1759 config.an_enabled = pl->link_config.an_enabled; 1760 1761 /* Ignore errors if we're expecting a PHY to attach later */ 1762 ret = phylink_validate(pl, support, &config); 1763 if (ret) { 1764 phylink_err(pl, "validation with support %*pb failed: %d\n", 1765 __ETHTOOL_LINK_MODE_MASK_NBITS, support, ret); 1766 return ret; 1767 } 1768 1769 iface = sfp_select_interface(pl->sfp_bus, config.advertising); 1770 if (iface == PHY_INTERFACE_MODE_NA) { 1771 phylink_err(pl, 1772 "selection of interface failed, advertisement %*pb\n", 1773 __ETHTOOL_LINK_MODE_MASK_NBITS, config.advertising); 1774 return -EINVAL; 1775 } 1776 1777 config.interface = iface; 1778 linkmode_copy(support1, support); 1779 ret = phylink_validate(pl, support1, &config); 1780 if (ret) { 1781 phylink_err(pl, "validation of %s/%s with support %*pb failed: %d\n", 1782 phylink_an_mode_str(mode), 1783 phy_modes(config.interface), 1784 __ETHTOOL_LINK_MODE_MASK_NBITS, support, ret); 1785 return ret; 1786 } 1787 1788 phylink_dbg(pl, "requesting link mode %s/%s with support %*pb\n", 1789 phylink_an_mode_str(mode), phy_modes(config.interface), 1790 __ETHTOOL_LINK_MODE_MASK_NBITS, support); 1791 1792 if (phy_interface_mode_is_8023z(iface) && pl->phydev) 1793 return -EINVAL; 1794 1795 changed = !linkmode_equal(pl->supported, support); 1796 if (changed) { 1797 linkmode_copy(pl->supported, support); 1798 linkmode_copy(pl->link_config.advertising, config.advertising); 1799 } 1800 1801 if (pl->cur_link_an_mode != mode || 1802 pl->link_config.interface != config.interface) { 1803 pl->link_config.interface = config.interface; 1804 pl->cur_link_an_mode = mode; 1805 1806 changed = true; 1807 1808 phylink_info(pl, "switched to %s/%s link mode\n", 1809 phylink_an_mode_str(mode), 1810 phy_modes(config.interface)); 1811 } 1812 1813 pl->link_port = pl->sfp_port; 1814 1815 if (changed && !test_bit(PHYLINK_DISABLE_STOPPED, 1816 &pl->phylink_disable_state)) 1817 phylink_mac_config(pl, &pl->link_config); 1818 1819 return ret; 1820 } 1821 1822 static int phylink_sfp_module_insert(void *upstream, 1823 const struct sfp_eeprom_id *id) 1824 { 1825 struct phylink *pl = upstream; 1826 unsigned long *support = pl->sfp_support; 1827 1828 ASSERT_RTNL(); 1829 1830 linkmode_zero(support); 1831 sfp_parse_support(pl->sfp_bus, id, support); 1832 pl->sfp_port = sfp_parse_port(pl->sfp_bus, id, support); 1833 1834 /* If this module may have a PHY connecting later, defer until later */ 1835 pl->sfp_may_have_phy = sfp_may_have_phy(pl->sfp_bus, id); 1836 if (pl->sfp_may_have_phy) 1837 return 0; 1838 1839 return phylink_sfp_config(pl, MLO_AN_INBAND, support, support); 1840 } 1841 1842 static int phylink_sfp_module_start(void *upstream) 1843 { 1844 struct phylink *pl = upstream; 1845 1846 /* If this SFP module has a PHY, start the PHY now. */ 1847 if (pl->phydev) { 1848 phy_start(pl->phydev); 1849 return 0; 1850 } 1851 1852 /* If the module may have a PHY but we didn't detect one we 1853 * need to configure the MAC here. 1854 */ 1855 if (!pl->sfp_may_have_phy) 1856 return 0; 1857 1858 return phylink_sfp_config(pl, MLO_AN_INBAND, 1859 pl->sfp_support, pl->sfp_support); 1860 } 1861 1862 static void phylink_sfp_module_stop(void *upstream) 1863 { 1864 struct phylink *pl = upstream; 1865 1866 /* If this SFP module has a PHY, stop it. */ 1867 if (pl->phydev) 1868 phy_stop(pl->phydev); 1869 } 1870 1871 static void phylink_sfp_link_down(void *upstream) 1872 { 1873 struct phylink *pl = upstream; 1874 1875 ASSERT_RTNL(); 1876 1877 phylink_run_resolve_and_disable(pl, PHYLINK_DISABLE_LINK); 1878 } 1879 1880 static void phylink_sfp_link_up(void *upstream) 1881 { 1882 struct phylink *pl = upstream; 1883 1884 ASSERT_RTNL(); 1885 1886 clear_bit(PHYLINK_DISABLE_LINK, &pl->phylink_disable_state); 1887 phylink_run_resolve(pl); 1888 } 1889 1890 /* The Broadcom BCM84881 in the Methode DM7052 is unable to provide a SGMII 1891 * or 802.3z control word, so inband will not work. 1892 */ 1893 static bool phylink_phy_no_inband(struct phy_device *phy) 1894 { 1895 return phy->is_c45 && 1896 (phy->c45_ids.device_ids[1] & 0xfffffff0) == 0xae025150; 1897 } 1898 1899 static int phylink_sfp_connect_phy(void *upstream, struct phy_device *phy) 1900 { 1901 struct phylink *pl = upstream; 1902 phy_interface_t interface; 1903 u8 mode; 1904 int ret; 1905 1906 /* 1907 * This is the new way of dealing with flow control for PHYs, 1908 * as described by Timur Tabi in commit 529ed1275263 ("net: phy: 1909 * phy drivers should not set SUPPORTED_[Asym_]Pause") except 1910 * using our validate call to the MAC, we rely upon the MAC 1911 * clearing the bits from both supported and advertising fields. 1912 */ 1913 phy_support_asym_pause(phy); 1914 1915 if (phylink_phy_no_inband(phy)) 1916 mode = MLO_AN_PHY; 1917 else 1918 mode = MLO_AN_INBAND; 1919 1920 /* Do the initial configuration */ 1921 ret = phylink_sfp_config(pl, mode, phy->supported, phy->advertising); 1922 if (ret < 0) 1923 return ret; 1924 1925 interface = pl->link_config.interface; 1926 ret = phylink_attach_phy(pl, phy, interface); 1927 if (ret < 0) 1928 return ret; 1929 1930 ret = phylink_bringup_phy(pl, phy, interface); 1931 if (ret) 1932 phy_detach(phy); 1933 1934 return ret; 1935 } 1936 1937 static void phylink_sfp_disconnect_phy(void *upstream) 1938 { 1939 phylink_disconnect_phy(upstream); 1940 } 1941 1942 static const struct sfp_upstream_ops sfp_phylink_ops = { 1943 .attach = phylink_sfp_attach, 1944 .detach = phylink_sfp_detach, 1945 .module_insert = phylink_sfp_module_insert, 1946 .module_start = phylink_sfp_module_start, 1947 .module_stop = phylink_sfp_module_stop, 1948 .link_up = phylink_sfp_link_up, 1949 .link_down = phylink_sfp_link_down, 1950 .connect_phy = phylink_sfp_connect_phy, 1951 .disconnect_phy = phylink_sfp_disconnect_phy, 1952 }; 1953 1954 /* Helpers for MAC drivers */ 1955 1956 /** 1957 * phylink_helper_basex_speed() - 1000BaseX/2500BaseX helper 1958 * @state: a pointer to a &struct phylink_link_state 1959 * 1960 * Inspect the interface mode, advertising mask or forced speed and 1961 * decide whether to run at 2.5Gbit or 1Gbit appropriately, switching 1962 * the interface mode to suit. @state->interface is appropriately 1963 * updated, and the advertising mask has the "other" baseX_Full flag 1964 * cleared. 1965 */ 1966 void phylink_helper_basex_speed(struct phylink_link_state *state) 1967 { 1968 if (phy_interface_mode_is_8023z(state->interface)) { 1969 bool want_2500 = state->an_enabled ? 1970 phylink_test(state->advertising, 2500baseX_Full) : 1971 state->speed == SPEED_2500; 1972 1973 if (want_2500) { 1974 phylink_clear(state->advertising, 1000baseX_Full); 1975 state->interface = PHY_INTERFACE_MODE_2500BASEX; 1976 } else { 1977 phylink_clear(state->advertising, 2500baseX_Full); 1978 state->interface = PHY_INTERFACE_MODE_1000BASEX; 1979 } 1980 } 1981 } 1982 EXPORT_SYMBOL_GPL(phylink_helper_basex_speed); 1983 1984 MODULE_LICENSE("GPL v2"); 1985