1 /* Copyright 2008-2015 Freescale Semiconductor, Inc. 2 * 3 * Redistribution and use in source and binary forms, with or without 4 * modification, are permitted provided that the following conditions are met: 5 * * Redistributions of source code must retain the above copyright 6 * notice, this list of conditions and the following disclaimer. 7 * * Redistributions in binary form must reproduce the above copyright 8 * notice, this list of conditions and the following disclaimer in the 9 * documentation and/or other materials provided with the distribution. 10 * * Neither the name of Freescale Semiconductor nor the 11 * names of its contributors may be used to endorse or promote products 12 * derived from this software without specific prior written permission. 13 * 14 * 15 * ALTERNATIVELY, this software may be distributed under the terms of the 16 * GNU General Public License ("GPL") as published by the Free Software 17 * Foundation, either version 2 of that License or (at your option) any 18 * later version. 19 * 20 * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY 21 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 22 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 23 * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY 24 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 25 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 27 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 29 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 33 34 #include <linux/init.h> 35 #include <linux/module.h> 36 #include <linux/of_address.h> 37 #include <linux/of_platform.h> 38 #include <linux/of_net.h> 39 #include <linux/of_mdio.h> 40 #include <linux/device.h> 41 #include <linux/phy.h> 42 #include <linux/netdevice.h> 43 #include <linux/phy_fixed.h> 44 #include <linux/etherdevice.h> 45 #include <linux/libfdt_env.h> 46 47 #include "mac.h" 48 #include "fman_mac.h" 49 #include "fman_dtsec.h" 50 #include "fman_tgec.h" 51 #include "fman_memac.h" 52 53 MODULE_LICENSE("Dual BSD/GPL"); 54 MODULE_DESCRIPTION("FSL FMan MAC API based driver"); 55 56 struct mac_priv_s { 57 struct device *dev; 58 void __iomem *vaddr; 59 u8 cell_index; 60 struct fman *fman; 61 struct device_node *internal_phy_node; 62 /* List of multicast addresses */ 63 struct list_head mc_addr_list; 64 struct platform_device *eth_dev; 65 struct fixed_phy_status *fixed_link; 66 u16 speed; 67 u16 max_speed; 68 69 int (*enable)(struct fman_mac *mac_dev, enum comm_mode mode); 70 int (*disable)(struct fman_mac *mac_dev, enum comm_mode mode); 71 }; 72 73 struct mac_address { 74 u8 addr[ETH_ALEN]; 75 struct list_head list; 76 }; 77 78 static void mac_exception(void *handle, enum fman_mac_exceptions ex) 79 { 80 struct mac_device *mac_dev; 81 struct mac_priv_s *priv; 82 83 mac_dev = handle; 84 priv = mac_dev->priv; 85 86 if (ex == FM_MAC_EX_10G_RX_FIFO_OVFL) { 87 /* don't flag RX FIFO after the first */ 88 mac_dev->set_exception(mac_dev->fman_mac, 89 FM_MAC_EX_10G_RX_FIFO_OVFL, false); 90 dev_err(priv->dev, "10G MAC got RX FIFO Error = %x\n", ex); 91 } 92 93 dev_dbg(priv->dev, "%s:%s() -> %d\n", KBUILD_BASENAME ".c", 94 __func__, ex); 95 } 96 97 static void set_fman_mac_params(struct mac_device *mac_dev, 98 struct fman_mac_params *params) 99 { 100 struct mac_priv_s *priv = mac_dev->priv; 101 102 params->base_addr = (typeof(params->base_addr)) 103 devm_ioremap(priv->dev, mac_dev->res->start, 104 resource_size(mac_dev->res)); 105 memcpy(¶ms->addr, mac_dev->addr, sizeof(mac_dev->addr)); 106 params->max_speed = priv->max_speed; 107 params->phy_if = mac_dev->phy_if; 108 params->basex_if = false; 109 params->mac_id = priv->cell_index; 110 params->fm = (void *)priv->fman; 111 params->exception_cb = mac_exception; 112 params->event_cb = mac_exception; 113 params->dev_id = mac_dev; 114 params->internal_phy_node = priv->internal_phy_node; 115 } 116 117 static int tgec_initialization(struct mac_device *mac_dev) 118 { 119 int err; 120 struct mac_priv_s *priv; 121 struct fman_mac_params params; 122 u32 version; 123 124 priv = mac_dev->priv; 125 126 set_fman_mac_params(mac_dev, ¶ms); 127 128 mac_dev->fman_mac = tgec_config(¶ms); 129 if (!mac_dev->fman_mac) { 130 err = -EINVAL; 131 goto _return; 132 } 133 134 err = tgec_cfg_max_frame_len(mac_dev->fman_mac, fman_get_max_frm()); 135 if (err < 0) 136 goto _return_fm_mac_free; 137 138 err = tgec_init(mac_dev->fman_mac); 139 if (err < 0) 140 goto _return_fm_mac_free; 141 142 /* For 10G MAC, disable Tx ECC exception */ 143 err = mac_dev->set_exception(mac_dev->fman_mac, 144 FM_MAC_EX_10G_TX_ECC_ER, false); 145 if (err < 0) 146 goto _return_fm_mac_free; 147 148 err = tgec_get_version(mac_dev->fman_mac, &version); 149 if (err < 0) 150 goto _return_fm_mac_free; 151 152 dev_info(priv->dev, "FMan XGEC version: 0x%08x\n", version); 153 154 goto _return; 155 156 _return_fm_mac_free: 157 tgec_free(mac_dev->fman_mac); 158 159 _return: 160 return err; 161 } 162 163 static int dtsec_initialization(struct mac_device *mac_dev) 164 { 165 int err; 166 struct mac_priv_s *priv; 167 struct fman_mac_params params; 168 u32 version; 169 170 priv = mac_dev->priv; 171 172 set_fman_mac_params(mac_dev, ¶ms); 173 174 mac_dev->fman_mac = dtsec_config(¶ms); 175 if (!mac_dev->fman_mac) { 176 err = -EINVAL; 177 goto _return; 178 } 179 180 err = dtsec_cfg_max_frame_len(mac_dev->fman_mac, fman_get_max_frm()); 181 if (err < 0) 182 goto _return_fm_mac_free; 183 184 err = dtsec_cfg_pad_and_crc(mac_dev->fman_mac, true); 185 if (err < 0) 186 goto _return_fm_mac_free; 187 188 err = dtsec_init(mac_dev->fman_mac); 189 if (err < 0) 190 goto _return_fm_mac_free; 191 192 /* For 1G MAC, disable by default the MIB counters overflow interrupt */ 193 err = mac_dev->set_exception(mac_dev->fman_mac, 194 FM_MAC_EX_1G_RX_MIB_CNT_OVFL, false); 195 if (err < 0) 196 goto _return_fm_mac_free; 197 198 err = dtsec_get_version(mac_dev->fman_mac, &version); 199 if (err < 0) 200 goto _return_fm_mac_free; 201 202 dev_info(priv->dev, "FMan dTSEC version: 0x%08x\n", version); 203 204 goto _return; 205 206 _return_fm_mac_free: 207 dtsec_free(mac_dev->fman_mac); 208 209 _return: 210 return err; 211 } 212 213 static int memac_initialization(struct mac_device *mac_dev) 214 { 215 int err; 216 struct mac_priv_s *priv; 217 struct fman_mac_params params; 218 219 priv = mac_dev->priv; 220 221 set_fman_mac_params(mac_dev, ¶ms); 222 223 if (priv->max_speed == SPEED_10000) 224 params.phy_if = PHY_INTERFACE_MODE_XGMII; 225 226 mac_dev->fman_mac = memac_config(¶ms); 227 if (!mac_dev->fman_mac) { 228 err = -EINVAL; 229 goto _return; 230 } 231 232 err = memac_cfg_max_frame_len(mac_dev->fman_mac, fman_get_max_frm()); 233 if (err < 0) 234 goto _return_fm_mac_free; 235 236 err = memac_cfg_reset_on_init(mac_dev->fman_mac, true); 237 if (err < 0) 238 goto _return_fm_mac_free; 239 240 err = memac_cfg_fixed_link(mac_dev->fman_mac, priv->fixed_link); 241 if (err < 0) 242 goto _return_fm_mac_free; 243 244 err = memac_init(mac_dev->fman_mac); 245 if (err < 0) 246 goto _return_fm_mac_free; 247 248 dev_info(priv->dev, "FMan MEMAC\n"); 249 250 goto _return; 251 252 _return_fm_mac_free: 253 memac_free(mac_dev->fman_mac); 254 255 _return: 256 return err; 257 } 258 259 static int start(struct mac_device *mac_dev) 260 { 261 int err; 262 struct phy_device *phy_dev = mac_dev->phy_dev; 263 struct mac_priv_s *priv = mac_dev->priv; 264 265 err = priv->enable(mac_dev->fman_mac, COMM_MODE_RX_AND_TX); 266 if (!err && phy_dev) 267 phy_start(phy_dev); 268 269 return err; 270 } 271 272 static int stop(struct mac_device *mac_dev) 273 { 274 struct mac_priv_s *priv = mac_dev->priv; 275 276 if (mac_dev->phy_dev) 277 phy_stop(mac_dev->phy_dev); 278 279 return priv->disable(mac_dev->fman_mac, COMM_MODE_RX_AND_TX); 280 } 281 282 static int set_multi(struct net_device *net_dev, struct mac_device *mac_dev) 283 { 284 struct mac_priv_s *priv; 285 struct mac_address *old_addr, *tmp; 286 struct netdev_hw_addr *ha; 287 int err; 288 enet_addr_t *addr; 289 290 priv = mac_dev->priv; 291 292 /* Clear previous address list */ 293 list_for_each_entry_safe(old_addr, tmp, &priv->mc_addr_list, list) { 294 addr = (enet_addr_t *)old_addr->addr; 295 err = mac_dev->remove_hash_mac_addr(mac_dev->fman_mac, addr); 296 if (err < 0) 297 return err; 298 299 list_del(&old_addr->list); 300 kfree(old_addr); 301 } 302 303 /* Add all the addresses from the new list */ 304 netdev_for_each_mc_addr(ha, net_dev) { 305 addr = (enet_addr_t *)ha->addr; 306 err = mac_dev->add_hash_mac_addr(mac_dev->fman_mac, addr); 307 if (err < 0) 308 return err; 309 310 tmp = kmalloc(sizeof(*tmp), GFP_ATOMIC); 311 if (!tmp) 312 return -ENOMEM; 313 314 ether_addr_copy(tmp->addr, ha->addr); 315 list_add(&tmp->list, &priv->mc_addr_list); 316 } 317 return 0; 318 } 319 320 /** 321 * fman_set_mac_active_pause 322 * @mac_dev: A pointer to the MAC device 323 * @rx: Pause frame setting for RX 324 * @tx: Pause frame setting for TX 325 * 326 * Set the MAC RX/TX PAUSE frames settings 327 * 328 * Avoid redundant calls to FMD, if the MAC driver already contains the desired 329 * active PAUSE settings. Otherwise, the new active settings should be reflected 330 * in FMan. 331 * 332 * Return: 0 on success; Error code otherwise. 333 */ 334 int fman_set_mac_active_pause(struct mac_device *mac_dev, bool rx, bool tx) 335 { 336 struct fman_mac *fman_mac = mac_dev->fman_mac; 337 int err = 0; 338 339 if (rx != mac_dev->rx_pause_active) { 340 err = mac_dev->set_rx_pause(fman_mac, rx); 341 if (likely(err == 0)) 342 mac_dev->rx_pause_active = rx; 343 } 344 345 if (tx != mac_dev->tx_pause_active) { 346 u16 pause_time = (tx ? FSL_FM_PAUSE_TIME_ENABLE : 347 FSL_FM_PAUSE_TIME_DISABLE); 348 349 err = mac_dev->set_tx_pause(fman_mac, 0, pause_time, 0); 350 351 if (likely(err == 0)) 352 mac_dev->tx_pause_active = tx; 353 } 354 355 return err; 356 } 357 EXPORT_SYMBOL(fman_set_mac_active_pause); 358 359 /** 360 * fman_get_pause_cfg 361 * @mac_dev: A pointer to the MAC device 362 * @rx: Return value for RX setting 363 * @tx: Return value for TX setting 364 * 365 * Determine the MAC RX/TX PAUSE frames settings based on PHY 366 * autonegotiation or values set by eththool. 367 * 368 * Return: Pointer to FMan device. 369 */ 370 void fman_get_pause_cfg(struct mac_device *mac_dev, bool *rx_pause, 371 bool *tx_pause) 372 { 373 struct phy_device *phy_dev = mac_dev->phy_dev; 374 u16 lcl_adv, rmt_adv; 375 u8 flowctrl; 376 377 *rx_pause = *tx_pause = false; 378 379 if (!phy_dev->duplex) 380 return; 381 382 /* If PAUSE autonegotiation is disabled, the TX/RX PAUSE settings 383 * are those set by ethtool. 384 */ 385 if (!mac_dev->autoneg_pause) { 386 *rx_pause = mac_dev->rx_pause_req; 387 *tx_pause = mac_dev->tx_pause_req; 388 return; 389 } 390 391 /* Else if PAUSE autonegotiation is enabled, the TX/RX PAUSE 392 * settings depend on the result of the link negotiation. 393 */ 394 395 /* get local capabilities */ 396 lcl_adv = linkmode_adv_to_lcl_adv_t(phy_dev->advertising); 397 398 /* get link partner capabilities */ 399 rmt_adv = 0; 400 if (phy_dev->pause) 401 rmt_adv |= LPA_PAUSE_CAP; 402 if (phy_dev->asym_pause) 403 rmt_adv |= LPA_PAUSE_ASYM; 404 405 /* Calculate TX/RX settings based on local and peer advertised 406 * symmetric/asymmetric PAUSE capabilities. 407 */ 408 flowctrl = mii_resolve_flowctrl_fdx(lcl_adv, rmt_adv); 409 if (flowctrl & FLOW_CTRL_RX) 410 *rx_pause = true; 411 if (flowctrl & FLOW_CTRL_TX) 412 *tx_pause = true; 413 } 414 EXPORT_SYMBOL(fman_get_pause_cfg); 415 416 static void adjust_link_void(struct mac_device *mac_dev) 417 { 418 } 419 420 static void adjust_link_dtsec(struct mac_device *mac_dev) 421 { 422 struct phy_device *phy_dev = mac_dev->phy_dev; 423 struct fman_mac *fman_mac; 424 bool rx_pause, tx_pause; 425 int err; 426 427 fman_mac = mac_dev->fman_mac; 428 if (!phy_dev->link) { 429 dtsec_restart_autoneg(fman_mac); 430 431 return; 432 } 433 434 dtsec_adjust_link(fman_mac, phy_dev->speed); 435 fman_get_pause_cfg(mac_dev, &rx_pause, &tx_pause); 436 err = fman_set_mac_active_pause(mac_dev, rx_pause, tx_pause); 437 if (err < 0) 438 dev_err(mac_dev->priv->dev, "fman_set_mac_active_pause() = %d\n", 439 err); 440 } 441 442 static void adjust_link_memac(struct mac_device *mac_dev) 443 { 444 struct phy_device *phy_dev = mac_dev->phy_dev; 445 struct fman_mac *fman_mac; 446 bool rx_pause, tx_pause; 447 int err; 448 449 fman_mac = mac_dev->fman_mac; 450 memac_adjust_link(fman_mac, phy_dev->speed); 451 452 fman_get_pause_cfg(mac_dev, &rx_pause, &tx_pause); 453 err = fman_set_mac_active_pause(mac_dev, rx_pause, tx_pause); 454 if (err < 0) 455 dev_err(mac_dev->priv->dev, "fman_set_mac_active_pause() = %d\n", 456 err); 457 } 458 459 static void setup_dtsec(struct mac_device *mac_dev) 460 { 461 mac_dev->init = dtsec_initialization; 462 mac_dev->set_promisc = dtsec_set_promiscuous; 463 mac_dev->change_addr = dtsec_modify_mac_address; 464 mac_dev->add_hash_mac_addr = dtsec_add_hash_mac_address; 465 mac_dev->remove_hash_mac_addr = dtsec_del_hash_mac_address; 466 mac_dev->set_tx_pause = dtsec_set_tx_pause_frames; 467 mac_dev->set_rx_pause = dtsec_accept_rx_pause_frames; 468 mac_dev->set_exception = dtsec_set_exception; 469 mac_dev->set_allmulti = dtsec_set_allmulti; 470 mac_dev->set_tstamp = dtsec_set_tstamp; 471 mac_dev->set_multi = set_multi; 472 mac_dev->start = start; 473 mac_dev->stop = stop; 474 mac_dev->adjust_link = adjust_link_dtsec; 475 mac_dev->priv->enable = dtsec_enable; 476 mac_dev->priv->disable = dtsec_disable; 477 } 478 479 static void setup_tgec(struct mac_device *mac_dev) 480 { 481 mac_dev->init = tgec_initialization; 482 mac_dev->set_promisc = tgec_set_promiscuous; 483 mac_dev->change_addr = tgec_modify_mac_address; 484 mac_dev->add_hash_mac_addr = tgec_add_hash_mac_address; 485 mac_dev->remove_hash_mac_addr = tgec_del_hash_mac_address; 486 mac_dev->set_tx_pause = tgec_set_tx_pause_frames; 487 mac_dev->set_rx_pause = tgec_accept_rx_pause_frames; 488 mac_dev->set_exception = tgec_set_exception; 489 mac_dev->set_allmulti = tgec_set_allmulti; 490 mac_dev->set_tstamp = tgec_set_tstamp; 491 mac_dev->set_multi = set_multi; 492 mac_dev->start = start; 493 mac_dev->stop = stop; 494 mac_dev->adjust_link = adjust_link_void; 495 mac_dev->priv->enable = tgec_enable; 496 mac_dev->priv->disable = tgec_disable; 497 } 498 499 static void setup_memac(struct mac_device *mac_dev) 500 { 501 mac_dev->init = memac_initialization; 502 mac_dev->set_promisc = memac_set_promiscuous; 503 mac_dev->change_addr = memac_modify_mac_address; 504 mac_dev->add_hash_mac_addr = memac_add_hash_mac_address; 505 mac_dev->remove_hash_mac_addr = memac_del_hash_mac_address; 506 mac_dev->set_tx_pause = memac_set_tx_pause_frames; 507 mac_dev->set_rx_pause = memac_accept_rx_pause_frames; 508 mac_dev->set_exception = memac_set_exception; 509 mac_dev->set_allmulti = memac_set_allmulti; 510 mac_dev->set_tstamp = memac_set_tstamp; 511 mac_dev->set_multi = set_multi; 512 mac_dev->start = start; 513 mac_dev->stop = stop; 514 mac_dev->adjust_link = adjust_link_memac; 515 mac_dev->priv->enable = memac_enable; 516 mac_dev->priv->disable = memac_disable; 517 } 518 519 #define DTSEC_SUPPORTED \ 520 (SUPPORTED_10baseT_Half \ 521 | SUPPORTED_10baseT_Full \ 522 | SUPPORTED_100baseT_Half \ 523 | SUPPORTED_100baseT_Full \ 524 | SUPPORTED_Autoneg \ 525 | SUPPORTED_Pause \ 526 | SUPPORTED_Asym_Pause \ 527 | SUPPORTED_MII) 528 529 static DEFINE_MUTEX(eth_lock); 530 531 static const u16 phy2speed[] = { 532 [PHY_INTERFACE_MODE_MII] = SPEED_100, 533 [PHY_INTERFACE_MODE_GMII] = SPEED_1000, 534 [PHY_INTERFACE_MODE_SGMII] = SPEED_1000, 535 [PHY_INTERFACE_MODE_TBI] = SPEED_1000, 536 [PHY_INTERFACE_MODE_RMII] = SPEED_100, 537 [PHY_INTERFACE_MODE_RGMII] = SPEED_1000, 538 [PHY_INTERFACE_MODE_RGMII_ID] = SPEED_1000, 539 [PHY_INTERFACE_MODE_RGMII_RXID] = SPEED_1000, 540 [PHY_INTERFACE_MODE_RGMII_TXID] = SPEED_1000, 541 [PHY_INTERFACE_MODE_RTBI] = SPEED_1000, 542 [PHY_INTERFACE_MODE_QSGMII] = SPEED_1000, 543 [PHY_INTERFACE_MODE_XGMII] = SPEED_10000 544 }; 545 546 static struct platform_device *dpaa_eth_add_device(int fman_id, 547 struct mac_device *mac_dev) 548 { 549 struct platform_device *pdev; 550 struct dpaa_eth_data data; 551 struct mac_priv_s *priv; 552 static int dpaa_eth_dev_cnt; 553 int ret; 554 555 priv = mac_dev->priv; 556 557 data.mac_dev = mac_dev; 558 data.mac_hw_id = priv->cell_index; 559 data.fman_hw_id = fman_id; 560 561 mutex_lock(ð_lock); 562 pdev = platform_device_alloc("dpaa-ethernet", dpaa_eth_dev_cnt); 563 if (!pdev) { 564 ret = -ENOMEM; 565 goto no_mem; 566 } 567 568 pdev->dev.parent = priv->dev; 569 570 ret = platform_device_add_data(pdev, &data, sizeof(data)); 571 if (ret) 572 goto err; 573 574 ret = platform_device_add(pdev); 575 if (ret) 576 goto err; 577 578 dpaa_eth_dev_cnt++; 579 mutex_unlock(ð_lock); 580 581 return pdev; 582 583 err: 584 platform_device_put(pdev); 585 no_mem: 586 mutex_unlock(ð_lock); 587 588 return ERR_PTR(ret); 589 } 590 591 static const struct of_device_id mac_match[] = { 592 { .compatible = "fsl,fman-dtsec" }, 593 { .compatible = "fsl,fman-xgec" }, 594 { .compatible = "fsl,fman-memac" }, 595 {} 596 }; 597 MODULE_DEVICE_TABLE(of, mac_match); 598 599 static int mac_probe(struct platform_device *_of_dev) 600 { 601 int err, i, nph; 602 struct device *dev; 603 struct device_node *mac_node, *dev_node; 604 struct mac_device *mac_dev; 605 struct platform_device *of_dev; 606 struct resource res; 607 struct mac_priv_s *priv; 608 const u8 *mac_addr; 609 u32 val; 610 u8 fman_id; 611 phy_interface_t phy_if; 612 613 dev = &_of_dev->dev; 614 mac_node = dev->of_node; 615 616 mac_dev = devm_kzalloc(dev, sizeof(*mac_dev), GFP_KERNEL); 617 if (!mac_dev) { 618 err = -ENOMEM; 619 goto _return; 620 } 621 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 622 if (!priv) { 623 err = -ENOMEM; 624 goto _return; 625 } 626 627 /* Save private information */ 628 mac_dev->priv = priv; 629 priv->dev = dev; 630 631 if (of_device_is_compatible(mac_node, "fsl,fman-dtsec")) { 632 setup_dtsec(mac_dev); 633 priv->internal_phy_node = of_parse_phandle(mac_node, 634 "tbi-handle", 0); 635 } else if (of_device_is_compatible(mac_node, "fsl,fman-xgec")) { 636 setup_tgec(mac_dev); 637 } else if (of_device_is_compatible(mac_node, "fsl,fman-memac")) { 638 setup_memac(mac_dev); 639 priv->internal_phy_node = of_parse_phandle(mac_node, 640 "pcsphy-handle", 0); 641 } else { 642 dev_err(dev, "MAC node (%pOF) contains unsupported MAC\n", 643 mac_node); 644 err = -EINVAL; 645 goto _return; 646 } 647 648 INIT_LIST_HEAD(&priv->mc_addr_list); 649 650 /* Get the FM node */ 651 dev_node = of_get_parent(mac_node); 652 if (!dev_node) { 653 dev_err(dev, "of_get_parent(%pOF) failed\n", 654 mac_node); 655 err = -EINVAL; 656 goto _return_of_get_parent; 657 } 658 659 of_dev = of_find_device_by_node(dev_node); 660 if (!of_dev) { 661 dev_err(dev, "of_find_device_by_node(%pOF) failed\n", dev_node); 662 err = -EINVAL; 663 goto _return_of_node_put; 664 } 665 666 /* Get the FMan cell-index */ 667 err = of_property_read_u32(dev_node, "cell-index", &val); 668 if (err) { 669 dev_err(dev, "failed to read cell-index for %pOF\n", dev_node); 670 err = -EINVAL; 671 goto _return_of_node_put; 672 } 673 /* cell-index 0 => FMan id 1 */ 674 fman_id = (u8)(val + 1); 675 676 priv->fman = fman_bind(&of_dev->dev); 677 if (!priv->fman) { 678 dev_err(dev, "fman_bind(%pOF) failed\n", dev_node); 679 err = -ENODEV; 680 goto _return_of_node_put; 681 } 682 683 of_node_put(dev_node); 684 685 /* Get the address of the memory mapped registers */ 686 err = of_address_to_resource(mac_node, 0, &res); 687 if (err < 0) { 688 dev_err(dev, "of_address_to_resource(%pOF) = %d\n", 689 mac_node, err); 690 goto _return_of_get_parent; 691 } 692 693 mac_dev->res = __devm_request_region(dev, 694 fman_get_mem_region(priv->fman), 695 res.start, res.end + 1 - res.start, 696 "mac"); 697 if (!mac_dev->res) { 698 dev_err(dev, "__devm_request_mem_region(mac) failed\n"); 699 err = -EBUSY; 700 goto _return_of_get_parent; 701 } 702 703 priv->vaddr = devm_ioremap(dev, mac_dev->res->start, 704 mac_dev->res->end + 1 - mac_dev->res->start); 705 if (!priv->vaddr) { 706 dev_err(dev, "devm_ioremap() failed\n"); 707 err = -EIO; 708 goto _return_of_get_parent; 709 } 710 711 if (!of_device_is_available(mac_node)) { 712 err = -ENODEV; 713 goto _return_of_get_parent; 714 } 715 716 /* Get the cell-index */ 717 err = of_property_read_u32(mac_node, "cell-index", &val); 718 if (err) { 719 dev_err(dev, "failed to read cell-index for %pOF\n", mac_node); 720 err = -EINVAL; 721 goto _return_of_get_parent; 722 } 723 priv->cell_index = (u8)val; 724 725 /* Get the MAC address */ 726 mac_addr = of_get_mac_address(mac_node); 727 if (IS_ERR(mac_addr)) { 728 dev_err(dev, "of_get_mac_address(%pOF) failed\n", mac_node); 729 err = -EINVAL; 730 goto _return_of_get_parent; 731 } 732 ether_addr_copy(mac_dev->addr, mac_addr); 733 734 /* Get the port handles */ 735 nph = of_count_phandle_with_args(mac_node, "fsl,fman-ports", NULL); 736 if (unlikely(nph < 0)) { 737 dev_err(dev, "of_count_phandle_with_args(%pOF, fsl,fman-ports) failed\n", 738 mac_node); 739 err = nph; 740 goto _return_of_get_parent; 741 } 742 743 if (nph != ARRAY_SIZE(mac_dev->port)) { 744 dev_err(dev, "Not supported number of fman-ports handles of mac node %pOF from device tree\n", 745 mac_node); 746 err = -EINVAL; 747 goto _return_of_get_parent; 748 } 749 750 for (i = 0; i < ARRAY_SIZE(mac_dev->port); i++) { 751 /* Find the port node */ 752 dev_node = of_parse_phandle(mac_node, "fsl,fman-ports", i); 753 if (!dev_node) { 754 dev_err(dev, "of_parse_phandle(%pOF, fsl,fman-ports) failed\n", 755 mac_node); 756 err = -EINVAL; 757 goto _return_of_node_put; 758 } 759 760 of_dev = of_find_device_by_node(dev_node); 761 if (!of_dev) { 762 dev_err(dev, "of_find_device_by_node(%pOF) failed\n", 763 dev_node); 764 err = -EINVAL; 765 goto _return_of_node_put; 766 } 767 768 mac_dev->port[i] = fman_port_bind(&of_dev->dev); 769 if (!mac_dev->port[i]) { 770 dev_err(dev, "dev_get_drvdata(%pOF) failed\n", 771 dev_node); 772 err = -EINVAL; 773 goto _return_of_node_put; 774 } 775 of_node_put(dev_node); 776 } 777 778 /* Get the PHY connection type */ 779 err = of_get_phy_mode(mac_node, &phy_if); 780 if (err) { 781 dev_warn(dev, 782 "of_get_phy_mode() for %pOF failed. Defaulting to SGMII\n", 783 mac_node); 784 phy_if = PHY_INTERFACE_MODE_SGMII; 785 } 786 mac_dev->phy_if = phy_if; 787 788 priv->speed = phy2speed[mac_dev->phy_if]; 789 priv->max_speed = priv->speed; 790 mac_dev->if_support = DTSEC_SUPPORTED; 791 /* We don't support half-duplex in SGMII mode */ 792 if (mac_dev->phy_if == PHY_INTERFACE_MODE_SGMII) 793 mac_dev->if_support &= ~(SUPPORTED_10baseT_Half | 794 SUPPORTED_100baseT_Half); 795 796 /* Gigabit support (no half-duplex) */ 797 if (priv->max_speed == 1000) 798 mac_dev->if_support |= SUPPORTED_1000baseT_Full; 799 800 /* The 10G interface only supports one mode */ 801 if (mac_dev->phy_if == PHY_INTERFACE_MODE_XGMII) 802 mac_dev->if_support = SUPPORTED_10000baseT_Full; 803 804 /* Get the rest of the PHY information */ 805 mac_dev->phy_node = of_parse_phandle(mac_node, "phy-handle", 0); 806 if (!mac_dev->phy_node && of_phy_is_fixed_link(mac_node)) { 807 struct phy_device *phy; 808 809 err = of_phy_register_fixed_link(mac_node); 810 if (err) 811 goto _return_of_get_parent; 812 813 priv->fixed_link = kzalloc(sizeof(*priv->fixed_link), 814 GFP_KERNEL); 815 if (!priv->fixed_link) { 816 err = -ENOMEM; 817 goto _return_of_get_parent; 818 } 819 820 mac_dev->phy_node = of_node_get(mac_node); 821 phy = of_phy_find_device(mac_dev->phy_node); 822 if (!phy) { 823 err = -EINVAL; 824 of_node_put(mac_dev->phy_node); 825 goto _return_of_get_parent; 826 } 827 828 priv->fixed_link->link = phy->link; 829 priv->fixed_link->speed = phy->speed; 830 priv->fixed_link->duplex = phy->duplex; 831 priv->fixed_link->pause = phy->pause; 832 priv->fixed_link->asym_pause = phy->asym_pause; 833 834 put_device(&phy->mdio.dev); 835 } 836 837 err = mac_dev->init(mac_dev); 838 if (err < 0) { 839 dev_err(dev, "mac_dev->init() = %d\n", err); 840 of_node_put(mac_dev->phy_node); 841 goto _return_of_get_parent; 842 } 843 844 /* pause frame autonegotiation enabled */ 845 mac_dev->autoneg_pause = true; 846 847 /* By intializing the values to false, force FMD to enable PAUSE frames 848 * on RX and TX 849 */ 850 mac_dev->rx_pause_req = true; 851 mac_dev->tx_pause_req = true; 852 mac_dev->rx_pause_active = false; 853 mac_dev->tx_pause_active = false; 854 err = fman_set_mac_active_pause(mac_dev, true, true); 855 if (err < 0) 856 dev_err(dev, "fman_set_mac_active_pause() = %d\n", err); 857 858 dev_info(dev, "FMan MAC address: %pM\n", mac_dev->addr); 859 860 priv->eth_dev = dpaa_eth_add_device(fman_id, mac_dev); 861 if (IS_ERR(priv->eth_dev)) { 862 dev_err(dev, "failed to add Ethernet platform device for MAC %d\n", 863 priv->cell_index); 864 priv->eth_dev = NULL; 865 } 866 867 goto _return; 868 869 _return_of_node_put: 870 of_node_put(dev_node); 871 _return_of_get_parent: 872 kfree(priv->fixed_link); 873 _return: 874 return err; 875 } 876 877 static struct platform_driver mac_driver = { 878 .driver = { 879 .name = KBUILD_MODNAME, 880 .of_match_table = mac_match, 881 }, 882 .probe = mac_probe, 883 }; 884 885 builtin_platform_driver(mac_driver); 886