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 phy_interface_t phy_if; 61 struct fman *fman; 62 struct device_node *phy_node; 63 struct device_node *internal_phy_node; 64 /* List of multicast addresses */ 65 struct list_head mc_addr_list; 66 struct platform_device *eth_dev; 67 struct fixed_phy_status *fixed_link; 68 u16 speed; 69 u16 max_speed; 70 71 int (*enable)(struct fman_mac *mac_dev, enum comm_mode mode); 72 int (*disable)(struct fman_mac *mac_dev, enum comm_mode mode); 73 }; 74 75 struct mac_address { 76 u8 addr[ETH_ALEN]; 77 struct list_head list; 78 }; 79 80 static void mac_exception(void *handle, enum fman_mac_exceptions ex) 81 { 82 struct mac_device *mac_dev; 83 struct mac_priv_s *priv; 84 85 mac_dev = handle; 86 priv = mac_dev->priv; 87 88 if (ex == FM_MAC_EX_10G_RX_FIFO_OVFL) { 89 /* don't flag RX FIFO after the first */ 90 mac_dev->set_exception(mac_dev->fman_mac, 91 FM_MAC_EX_10G_RX_FIFO_OVFL, false); 92 dev_err(priv->dev, "10G MAC got RX FIFO Error = %x\n", ex); 93 } 94 95 dev_dbg(priv->dev, "%s:%s() -> %d\n", KBUILD_BASENAME ".c", 96 __func__, ex); 97 } 98 99 static void set_fman_mac_params(struct mac_device *mac_dev, 100 struct fman_mac_params *params) 101 { 102 struct mac_priv_s *priv = mac_dev->priv; 103 104 params->base_addr = (typeof(params->base_addr)) 105 devm_ioremap(priv->dev, mac_dev->res->start, 106 resource_size(mac_dev->res)); 107 memcpy(¶ms->addr, mac_dev->addr, sizeof(mac_dev->addr)); 108 params->max_speed = priv->max_speed; 109 params->phy_if = priv->phy_if; 110 params->basex_if = false; 111 params->mac_id = priv->cell_index; 112 params->fm = (void *)priv->fman; 113 params->exception_cb = mac_exception; 114 params->event_cb = mac_exception; 115 params->dev_id = mac_dev; 116 params->internal_phy_node = priv->internal_phy_node; 117 } 118 119 static int tgec_initialization(struct mac_device *mac_dev) 120 { 121 int err; 122 struct mac_priv_s *priv; 123 struct fman_mac_params params; 124 u32 version; 125 126 priv = mac_dev->priv; 127 128 set_fman_mac_params(mac_dev, ¶ms); 129 130 mac_dev->fman_mac = tgec_config(¶ms); 131 if (!mac_dev->fman_mac) { 132 err = -EINVAL; 133 goto _return; 134 } 135 136 err = tgec_cfg_max_frame_len(mac_dev->fman_mac, fman_get_max_frm()); 137 if (err < 0) 138 goto _return_fm_mac_free; 139 140 err = tgec_init(mac_dev->fman_mac); 141 if (err < 0) 142 goto _return_fm_mac_free; 143 144 /* For 10G MAC, disable Tx ECC exception */ 145 err = mac_dev->set_exception(mac_dev->fman_mac, 146 FM_MAC_EX_10G_TX_ECC_ER, false); 147 if (err < 0) 148 goto _return_fm_mac_free; 149 150 err = tgec_get_version(mac_dev->fman_mac, &version); 151 if (err < 0) 152 goto _return_fm_mac_free; 153 154 dev_info(priv->dev, "FMan XGEC version: 0x%08x\n", version); 155 156 goto _return; 157 158 _return_fm_mac_free: 159 tgec_free(mac_dev->fman_mac); 160 161 _return: 162 return err; 163 } 164 165 static int dtsec_initialization(struct mac_device *mac_dev) 166 { 167 int err; 168 struct mac_priv_s *priv; 169 struct fman_mac_params params; 170 u32 version; 171 172 priv = mac_dev->priv; 173 174 set_fman_mac_params(mac_dev, ¶ms); 175 176 mac_dev->fman_mac = dtsec_config(¶ms); 177 if (!mac_dev->fman_mac) { 178 err = -EINVAL; 179 goto _return; 180 } 181 182 err = dtsec_cfg_max_frame_len(mac_dev->fman_mac, fman_get_max_frm()); 183 if (err < 0) 184 goto _return_fm_mac_free; 185 186 err = dtsec_cfg_pad_and_crc(mac_dev->fman_mac, true); 187 if (err < 0) 188 goto _return_fm_mac_free; 189 190 err = dtsec_init(mac_dev->fman_mac); 191 if (err < 0) 192 goto _return_fm_mac_free; 193 194 /* For 1G MAC, disable by default the MIB counters overflow interrupt */ 195 err = mac_dev->set_exception(mac_dev->fman_mac, 196 FM_MAC_EX_1G_RX_MIB_CNT_OVFL, false); 197 if (err < 0) 198 goto _return_fm_mac_free; 199 200 err = dtsec_get_version(mac_dev->fman_mac, &version); 201 if (err < 0) 202 goto _return_fm_mac_free; 203 204 dev_info(priv->dev, "FMan dTSEC version: 0x%08x\n", version); 205 206 goto _return; 207 208 _return_fm_mac_free: 209 dtsec_free(mac_dev->fman_mac); 210 211 _return: 212 return err; 213 } 214 215 static int memac_initialization(struct mac_device *mac_dev) 216 { 217 int err; 218 struct mac_priv_s *priv; 219 struct fman_mac_params params; 220 221 priv = mac_dev->priv; 222 223 set_fman_mac_params(mac_dev, ¶ms); 224 225 if (priv->max_speed == SPEED_10000) 226 params.phy_if = PHY_INTERFACE_MODE_XGMII; 227 228 mac_dev->fman_mac = memac_config(¶ms); 229 if (!mac_dev->fman_mac) { 230 err = -EINVAL; 231 goto _return; 232 } 233 234 err = memac_cfg_max_frame_len(mac_dev->fman_mac, fman_get_max_frm()); 235 if (err < 0) 236 goto _return_fm_mac_free; 237 238 err = memac_cfg_reset_on_init(mac_dev->fman_mac, true); 239 if (err < 0) 240 goto _return_fm_mac_free; 241 242 err = memac_cfg_fixed_link(mac_dev->fman_mac, priv->fixed_link); 243 if (err < 0) 244 goto _return_fm_mac_free; 245 246 err = memac_init(mac_dev->fman_mac); 247 if (err < 0) 248 goto _return_fm_mac_free; 249 250 dev_info(priv->dev, "FMan MEMAC\n"); 251 252 goto _return; 253 254 _return_fm_mac_free: 255 memac_free(mac_dev->fman_mac); 256 257 _return: 258 return err; 259 } 260 261 static int start(struct mac_device *mac_dev) 262 { 263 int err; 264 struct phy_device *phy_dev = mac_dev->phy_dev; 265 struct mac_priv_s *priv = mac_dev->priv; 266 267 err = priv->enable(mac_dev->fman_mac, COMM_MODE_RX_AND_TX); 268 if (!err && phy_dev) 269 phy_start(phy_dev); 270 271 return err; 272 } 273 274 static int stop(struct mac_device *mac_dev) 275 { 276 struct mac_priv_s *priv = mac_dev->priv; 277 278 if (mac_dev->phy_dev) 279 phy_stop(mac_dev->phy_dev); 280 281 return priv->disable(mac_dev->fman_mac, COMM_MODE_RX_AND_TX); 282 } 283 284 static int set_multi(struct net_device *net_dev, struct mac_device *mac_dev) 285 { 286 struct mac_priv_s *priv; 287 struct mac_address *old_addr, *tmp; 288 struct netdev_hw_addr *ha; 289 int err; 290 enet_addr_t *addr; 291 292 priv = mac_dev->priv; 293 294 /* Clear previous address list */ 295 list_for_each_entry_safe(old_addr, tmp, &priv->mc_addr_list, list) { 296 addr = (enet_addr_t *)old_addr->addr; 297 err = mac_dev->remove_hash_mac_addr(mac_dev->fman_mac, addr); 298 if (err < 0) 299 return err; 300 301 list_del(&old_addr->list); 302 kfree(old_addr); 303 } 304 305 /* Add all the addresses from the new list */ 306 netdev_for_each_mc_addr(ha, net_dev) { 307 addr = (enet_addr_t *)ha->addr; 308 err = mac_dev->add_hash_mac_addr(mac_dev->fman_mac, addr); 309 if (err < 0) 310 return err; 311 312 tmp = kmalloc(sizeof(*tmp), GFP_ATOMIC); 313 if (!tmp) 314 return -ENOMEM; 315 316 ether_addr_copy(tmp->addr, ha->addr); 317 list_add(&tmp->list, &priv->mc_addr_list); 318 } 319 return 0; 320 } 321 322 /** 323 * fman_set_mac_active_pause 324 * @mac_dev: A pointer to the MAC device 325 * @rx: Pause frame setting for RX 326 * @tx: Pause frame setting for TX 327 * 328 * Set the MAC RX/TX PAUSE frames settings 329 * 330 * Avoid redundant calls to FMD, if the MAC driver already contains the desired 331 * active PAUSE settings. Otherwise, the new active settings should be reflected 332 * in FMan. 333 * 334 * Return: 0 on success; Error code otherwise. 335 */ 336 int fman_set_mac_active_pause(struct mac_device *mac_dev, bool rx, bool tx) 337 { 338 struct fman_mac *fman_mac = mac_dev->fman_mac; 339 int err = 0; 340 341 if (rx != mac_dev->rx_pause_active) { 342 err = mac_dev->set_rx_pause(fman_mac, rx); 343 if (likely(err == 0)) 344 mac_dev->rx_pause_active = rx; 345 } 346 347 if (tx != mac_dev->tx_pause_active) { 348 u16 pause_time = (tx ? FSL_FM_PAUSE_TIME_ENABLE : 349 FSL_FM_PAUSE_TIME_DISABLE); 350 351 err = mac_dev->set_tx_pause(fman_mac, 0, pause_time, 0); 352 353 if (likely(err == 0)) 354 mac_dev->tx_pause_active = tx; 355 } 356 357 return err; 358 } 359 EXPORT_SYMBOL(fman_set_mac_active_pause); 360 361 /** 362 * fman_get_pause_cfg 363 * @mac_dev: A pointer to the MAC device 364 * @rx: Return value for RX setting 365 * @tx: Return value for TX setting 366 * 367 * Determine the MAC RX/TX PAUSE frames settings based on PHY 368 * autonegotiation or values set by eththool. 369 * 370 * Return: Pointer to FMan device. 371 */ 372 void fman_get_pause_cfg(struct mac_device *mac_dev, bool *rx_pause, 373 bool *tx_pause) 374 { 375 struct phy_device *phy_dev = mac_dev->phy_dev; 376 u16 lcl_adv, rmt_adv; 377 u8 flowctrl; 378 379 *rx_pause = *tx_pause = false; 380 381 if (!phy_dev->duplex) 382 return; 383 384 /* If PAUSE autonegotiation is disabled, the TX/RX PAUSE settings 385 * are those set by ethtool. 386 */ 387 if (!mac_dev->autoneg_pause) { 388 *rx_pause = mac_dev->rx_pause_req; 389 *tx_pause = mac_dev->tx_pause_req; 390 return; 391 } 392 393 /* Else if PAUSE autonegotiation is enabled, the TX/RX PAUSE 394 * settings depend on the result of the link negotiation. 395 */ 396 397 /* get local capabilities */ 398 lcl_adv = 0; 399 if (phy_dev->advertising & ADVERTISED_Pause) 400 lcl_adv |= ADVERTISE_PAUSE_CAP; 401 if (phy_dev->advertising & ADVERTISED_Asym_Pause) 402 lcl_adv |= ADVERTISE_PAUSE_ASYM; 403 404 /* get link partner capabilities */ 405 rmt_adv = 0; 406 if (phy_dev->pause) 407 rmt_adv |= LPA_PAUSE_CAP; 408 if (phy_dev->asym_pause) 409 rmt_adv |= LPA_PAUSE_ASYM; 410 411 /* Calculate TX/RX settings based on local and peer advertised 412 * symmetric/asymmetric PAUSE capabilities. 413 */ 414 flowctrl = mii_resolve_flowctrl_fdx(lcl_adv, rmt_adv); 415 if (flowctrl & FLOW_CTRL_RX) 416 *rx_pause = true; 417 if (flowctrl & FLOW_CTRL_TX) 418 *tx_pause = true; 419 } 420 EXPORT_SYMBOL(fman_get_pause_cfg); 421 422 static void adjust_link_void(struct net_device *net_dev) 423 { 424 } 425 426 static void adjust_link_dtsec(struct net_device *net_dev) 427 { 428 struct device *dev = net_dev->dev.parent; 429 struct dpaa_eth_data *eth_data = dev->platform_data; 430 struct mac_device *mac_dev = eth_data->mac_dev; 431 struct phy_device *phy_dev = mac_dev->phy_dev; 432 struct fman_mac *fman_mac; 433 bool rx_pause, tx_pause; 434 int err; 435 436 fman_mac = mac_dev->fman_mac; 437 if (!phy_dev->link) { 438 dtsec_restart_autoneg(fman_mac); 439 440 return; 441 } 442 443 dtsec_adjust_link(fman_mac, phy_dev->speed); 444 fman_get_pause_cfg(mac_dev, &rx_pause, &tx_pause); 445 err = fman_set_mac_active_pause(mac_dev, rx_pause, tx_pause); 446 if (err < 0) 447 netdev_err(net_dev, "fman_set_mac_active_pause() = %d\n", err); 448 } 449 450 static void adjust_link_memac(struct net_device *net_dev) 451 { 452 struct device *dev = net_dev->dev.parent; 453 struct dpaa_eth_data *eth_data = dev->platform_data; 454 struct mac_device *mac_dev = eth_data->mac_dev; 455 struct phy_device *phy_dev = mac_dev->phy_dev; 456 struct fman_mac *fman_mac; 457 bool rx_pause, tx_pause; 458 int err; 459 460 fman_mac = mac_dev->fman_mac; 461 memac_adjust_link(fman_mac, phy_dev->speed); 462 463 fman_get_pause_cfg(mac_dev, &rx_pause, &tx_pause); 464 err = fman_set_mac_active_pause(mac_dev, rx_pause, tx_pause); 465 if (err < 0) 466 netdev_err(net_dev, "fman_set_mac_active_pause() = %d\n", err); 467 } 468 469 /* Initializes driver's PHY state, and attaches to the PHY. 470 * Returns 0 on success. 471 */ 472 static struct phy_device *init_phy(struct net_device *net_dev, 473 struct mac_device *mac_dev, 474 void (*adj_lnk)(struct net_device *)) 475 { 476 struct phy_device *phy_dev; 477 struct mac_priv_s *priv = mac_dev->priv; 478 479 phy_dev = of_phy_connect(net_dev, priv->phy_node, adj_lnk, 0, 480 priv->phy_if); 481 if (!phy_dev) { 482 netdev_err(net_dev, "Could not connect to PHY\n"); 483 return NULL; 484 } 485 486 /* Remove any features not supported by the controller */ 487 phy_dev->supported &= mac_dev->if_support; 488 /* Enable the symmetric and asymmetric PAUSE frame advertisements, 489 * as most of the PHY drivers do not enable them by default. 490 */ 491 phy_dev->supported |= (SUPPORTED_Pause | SUPPORTED_Asym_Pause); 492 phy_dev->advertising = phy_dev->supported; 493 494 mac_dev->phy_dev = phy_dev; 495 496 return phy_dev; 497 } 498 499 static struct phy_device *dtsec_init_phy(struct net_device *net_dev, 500 struct mac_device *mac_dev) 501 { 502 return init_phy(net_dev, mac_dev, &adjust_link_dtsec); 503 } 504 505 static struct phy_device *tgec_init_phy(struct net_device *net_dev, 506 struct mac_device *mac_dev) 507 { 508 return init_phy(net_dev, mac_dev, adjust_link_void); 509 } 510 511 static struct phy_device *memac_init_phy(struct net_device *net_dev, 512 struct mac_device *mac_dev) 513 { 514 return init_phy(net_dev, mac_dev, &adjust_link_memac); 515 } 516 517 static void setup_dtsec(struct mac_device *mac_dev) 518 { 519 mac_dev->init_phy = dtsec_init_phy; 520 mac_dev->init = dtsec_initialization; 521 mac_dev->set_promisc = dtsec_set_promiscuous; 522 mac_dev->change_addr = dtsec_modify_mac_address; 523 mac_dev->add_hash_mac_addr = dtsec_add_hash_mac_address; 524 mac_dev->remove_hash_mac_addr = dtsec_del_hash_mac_address; 525 mac_dev->set_tx_pause = dtsec_set_tx_pause_frames; 526 mac_dev->set_rx_pause = dtsec_accept_rx_pause_frames; 527 mac_dev->set_exception = dtsec_set_exception; 528 mac_dev->set_multi = set_multi; 529 mac_dev->start = start; 530 mac_dev->stop = stop; 531 532 mac_dev->priv->enable = dtsec_enable; 533 mac_dev->priv->disable = dtsec_disable; 534 } 535 536 static void setup_tgec(struct mac_device *mac_dev) 537 { 538 mac_dev->init_phy = tgec_init_phy; 539 mac_dev->init = tgec_initialization; 540 mac_dev->set_promisc = tgec_set_promiscuous; 541 mac_dev->change_addr = tgec_modify_mac_address; 542 mac_dev->add_hash_mac_addr = tgec_add_hash_mac_address; 543 mac_dev->remove_hash_mac_addr = tgec_del_hash_mac_address; 544 mac_dev->set_tx_pause = tgec_set_tx_pause_frames; 545 mac_dev->set_rx_pause = tgec_accept_rx_pause_frames; 546 mac_dev->set_exception = tgec_set_exception; 547 mac_dev->set_multi = set_multi; 548 mac_dev->start = start; 549 mac_dev->stop = stop; 550 551 mac_dev->priv->enable = tgec_enable; 552 mac_dev->priv->disable = tgec_disable; 553 } 554 555 static void setup_memac(struct mac_device *mac_dev) 556 { 557 mac_dev->init_phy = memac_init_phy; 558 mac_dev->init = memac_initialization; 559 mac_dev->set_promisc = memac_set_promiscuous; 560 mac_dev->change_addr = memac_modify_mac_address; 561 mac_dev->add_hash_mac_addr = memac_add_hash_mac_address; 562 mac_dev->remove_hash_mac_addr = memac_del_hash_mac_address; 563 mac_dev->set_tx_pause = memac_set_tx_pause_frames; 564 mac_dev->set_rx_pause = memac_accept_rx_pause_frames; 565 mac_dev->set_exception = memac_set_exception; 566 mac_dev->set_multi = set_multi; 567 mac_dev->start = start; 568 mac_dev->stop = stop; 569 570 mac_dev->priv->enable = memac_enable; 571 mac_dev->priv->disable = memac_disable; 572 } 573 574 #define DTSEC_SUPPORTED \ 575 (SUPPORTED_10baseT_Half \ 576 | SUPPORTED_10baseT_Full \ 577 | SUPPORTED_100baseT_Half \ 578 | SUPPORTED_100baseT_Full \ 579 | SUPPORTED_Autoneg \ 580 | SUPPORTED_Pause \ 581 | SUPPORTED_Asym_Pause \ 582 | SUPPORTED_MII) 583 584 static DEFINE_MUTEX(eth_lock); 585 586 static const u16 phy2speed[] = { 587 [PHY_INTERFACE_MODE_MII] = SPEED_100, 588 [PHY_INTERFACE_MODE_GMII] = SPEED_1000, 589 [PHY_INTERFACE_MODE_SGMII] = SPEED_1000, 590 [PHY_INTERFACE_MODE_TBI] = SPEED_1000, 591 [PHY_INTERFACE_MODE_RMII] = SPEED_100, 592 [PHY_INTERFACE_MODE_RGMII] = SPEED_1000, 593 [PHY_INTERFACE_MODE_RGMII_ID] = SPEED_1000, 594 [PHY_INTERFACE_MODE_RGMII_RXID] = SPEED_1000, 595 [PHY_INTERFACE_MODE_RGMII_TXID] = SPEED_1000, 596 [PHY_INTERFACE_MODE_RTBI] = SPEED_1000, 597 [PHY_INTERFACE_MODE_QSGMII] = SPEED_1000, 598 [PHY_INTERFACE_MODE_XGMII] = SPEED_10000 599 }; 600 601 static struct platform_device *dpaa_eth_add_device(int fman_id, 602 struct mac_device *mac_dev, 603 struct device_node *node) 604 { 605 struct platform_device *pdev; 606 struct dpaa_eth_data data; 607 struct mac_priv_s *priv; 608 static int dpaa_eth_dev_cnt; 609 int ret; 610 611 priv = mac_dev->priv; 612 613 data.mac_dev = mac_dev; 614 data.mac_hw_id = priv->cell_index; 615 data.fman_hw_id = fman_id; 616 data.mac_node = node; 617 618 mutex_lock(ð_lock); 619 620 pdev = platform_device_alloc("dpaa-ethernet", dpaa_eth_dev_cnt); 621 if (!pdev) { 622 ret = -ENOMEM; 623 goto no_mem; 624 } 625 626 pdev->dev.of_node = node; 627 pdev->dev.parent = priv->dev; 628 set_dma_ops(&pdev->dev, get_dma_ops(priv->dev)); 629 630 ret = platform_device_add_data(pdev, &data, sizeof(data)); 631 if (ret) 632 goto err; 633 634 ret = platform_device_add(pdev); 635 if (ret) 636 goto err; 637 638 dpaa_eth_dev_cnt++; 639 mutex_unlock(ð_lock); 640 641 return pdev; 642 643 err: 644 platform_device_put(pdev); 645 no_mem: 646 mutex_unlock(ð_lock); 647 648 return ERR_PTR(ret); 649 } 650 651 static const struct of_device_id mac_match[] = { 652 { .compatible = "fsl,fman-dtsec" }, 653 { .compatible = "fsl,fman-xgec" }, 654 { .compatible = "fsl,fman-memac" }, 655 {} 656 }; 657 MODULE_DEVICE_TABLE(of, mac_match); 658 659 static int mac_probe(struct platform_device *_of_dev) 660 { 661 int err, i, nph; 662 struct device *dev; 663 struct device_node *mac_node, *dev_node; 664 struct mac_device *mac_dev; 665 struct platform_device *of_dev; 666 struct resource res; 667 struct mac_priv_s *priv; 668 const u8 *mac_addr; 669 u32 val; 670 u8 fman_id; 671 int phy_if; 672 673 dev = &_of_dev->dev; 674 mac_node = dev->of_node; 675 676 mac_dev = devm_kzalloc(dev, sizeof(*mac_dev), GFP_KERNEL); 677 if (!mac_dev) { 678 err = -ENOMEM; 679 dev_err(dev, "devm_kzalloc() = %d\n", err); 680 goto _return; 681 } 682 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 683 if (!priv) { 684 err = -ENOMEM; 685 goto _return; 686 } 687 688 /* Save private information */ 689 mac_dev->priv = priv; 690 priv->dev = dev; 691 692 if (of_device_is_compatible(mac_node, "fsl,fman-dtsec")) { 693 setup_dtsec(mac_dev); 694 priv->internal_phy_node = of_parse_phandle(mac_node, 695 "tbi-handle", 0); 696 } else if (of_device_is_compatible(mac_node, "fsl,fman-xgec")) { 697 setup_tgec(mac_dev); 698 } else if (of_device_is_compatible(mac_node, "fsl,fman-memac")) { 699 setup_memac(mac_dev); 700 priv->internal_phy_node = of_parse_phandle(mac_node, 701 "pcsphy-handle", 0); 702 } else { 703 dev_err(dev, "MAC node (%pOF) contains unsupported MAC\n", 704 mac_node); 705 err = -EINVAL; 706 goto _return; 707 } 708 709 /* Register mac_dev */ 710 dev_set_drvdata(dev, mac_dev); 711 712 INIT_LIST_HEAD(&priv->mc_addr_list); 713 714 /* Get the FM node */ 715 dev_node = of_get_parent(mac_node); 716 if (!dev_node) { 717 dev_err(dev, "of_get_parent(%pOF) failed\n", 718 mac_node); 719 err = -EINVAL; 720 goto _return_dev_set_drvdata; 721 } 722 723 of_dev = of_find_device_by_node(dev_node); 724 if (!of_dev) { 725 dev_err(dev, "of_find_device_by_node(%pOF) failed\n", dev_node); 726 err = -EINVAL; 727 goto _return_of_node_put; 728 } 729 730 /* Get the FMan cell-index */ 731 err = of_property_read_u32(dev_node, "cell-index", &val); 732 if (err) { 733 dev_err(dev, "failed to read cell-index for %pOF\n", dev_node); 734 err = -EINVAL; 735 goto _return_of_node_put; 736 } 737 /* cell-index 0 => FMan id 1 */ 738 fman_id = (u8)(val + 1); 739 740 priv->fman = fman_bind(&of_dev->dev); 741 if (!priv->fman) { 742 dev_err(dev, "fman_bind(%pOF) failed\n", dev_node); 743 err = -ENODEV; 744 goto _return_of_node_put; 745 } 746 747 of_node_put(dev_node); 748 749 /* Get the address of the memory mapped registers */ 750 err = of_address_to_resource(mac_node, 0, &res); 751 if (err < 0) { 752 dev_err(dev, "of_address_to_resource(%pOF) = %d\n", 753 mac_node, err); 754 goto _return_dev_set_drvdata; 755 } 756 757 mac_dev->res = __devm_request_region(dev, 758 fman_get_mem_region(priv->fman), 759 res.start, res.end + 1 - res.start, 760 "mac"); 761 if (!mac_dev->res) { 762 dev_err(dev, "__devm_request_mem_region(mac) failed\n"); 763 err = -EBUSY; 764 goto _return_dev_set_drvdata; 765 } 766 767 priv->vaddr = devm_ioremap(dev, mac_dev->res->start, 768 mac_dev->res->end + 1 - mac_dev->res->start); 769 if (!priv->vaddr) { 770 dev_err(dev, "devm_ioremap() failed\n"); 771 err = -EIO; 772 goto _return_dev_set_drvdata; 773 } 774 775 if (!of_device_is_available(mac_node)) { 776 devm_iounmap(dev, priv->vaddr); 777 __devm_release_region(dev, fman_get_mem_region(priv->fman), 778 res.start, res.end + 1 - res.start); 779 devm_kfree(dev, mac_dev); 780 dev_set_drvdata(dev, NULL); 781 return -ENODEV; 782 } 783 784 /* Get the cell-index */ 785 err = of_property_read_u32(mac_node, "cell-index", &val); 786 if (err) { 787 dev_err(dev, "failed to read cell-index for %pOF\n", mac_node); 788 err = -EINVAL; 789 goto _return_dev_set_drvdata; 790 } 791 priv->cell_index = (u8)val; 792 793 /* Get the MAC address */ 794 mac_addr = of_get_mac_address(mac_node); 795 if (!mac_addr) { 796 dev_err(dev, "of_get_mac_address(%pOF) failed\n", mac_node); 797 err = -EINVAL; 798 goto _return_dev_set_drvdata; 799 } 800 memcpy(mac_dev->addr, mac_addr, sizeof(mac_dev->addr)); 801 802 /* Get the port handles */ 803 nph = of_count_phandle_with_args(mac_node, "fsl,fman-ports", NULL); 804 if (unlikely(nph < 0)) { 805 dev_err(dev, "of_count_phandle_with_args(%pOF, fsl,fman-ports) failed\n", 806 mac_node); 807 err = nph; 808 goto _return_dev_set_drvdata; 809 } 810 811 if (nph != ARRAY_SIZE(mac_dev->port)) { 812 dev_err(dev, "Not supported number of fman-ports handles of mac node %pOF from device tree\n", 813 mac_node); 814 err = -EINVAL; 815 goto _return_dev_set_drvdata; 816 } 817 818 for (i = 0; i < ARRAY_SIZE(mac_dev->port); i++) { 819 /* Find the port node */ 820 dev_node = of_parse_phandle(mac_node, "fsl,fman-ports", i); 821 if (!dev_node) { 822 dev_err(dev, "of_parse_phandle(%pOF, fsl,fman-ports) failed\n", 823 mac_node); 824 err = -EINVAL; 825 goto _return_of_node_put; 826 } 827 828 of_dev = of_find_device_by_node(dev_node); 829 if (!of_dev) { 830 dev_err(dev, "of_find_device_by_node(%pOF) failed\n", 831 dev_node); 832 err = -EINVAL; 833 goto _return_of_node_put; 834 } 835 836 mac_dev->port[i] = fman_port_bind(&of_dev->dev); 837 if (!mac_dev->port[i]) { 838 dev_err(dev, "dev_get_drvdata(%pOF) failed\n", 839 dev_node); 840 err = -EINVAL; 841 goto _return_of_node_put; 842 } 843 of_node_put(dev_node); 844 } 845 846 /* Get the PHY connection type */ 847 phy_if = of_get_phy_mode(mac_node); 848 if (phy_if < 0) { 849 dev_warn(dev, 850 "of_get_phy_mode() for %pOF failed. Defaulting to SGMII\n", 851 mac_node); 852 phy_if = PHY_INTERFACE_MODE_SGMII; 853 } 854 priv->phy_if = phy_if; 855 856 priv->speed = phy2speed[priv->phy_if]; 857 priv->max_speed = priv->speed; 858 mac_dev->if_support = DTSEC_SUPPORTED; 859 /* We don't support half-duplex in SGMII mode */ 860 if (priv->phy_if == PHY_INTERFACE_MODE_SGMII) 861 mac_dev->if_support &= ~(SUPPORTED_10baseT_Half | 862 SUPPORTED_100baseT_Half); 863 864 /* Gigabit support (no half-duplex) */ 865 if (priv->max_speed == 1000) 866 mac_dev->if_support |= SUPPORTED_1000baseT_Full; 867 868 /* The 10G interface only supports one mode */ 869 if (priv->phy_if == PHY_INTERFACE_MODE_XGMII) 870 mac_dev->if_support = SUPPORTED_10000baseT_Full; 871 872 /* Get the rest of the PHY information */ 873 priv->phy_node = of_parse_phandle(mac_node, "phy-handle", 0); 874 if (!priv->phy_node && of_phy_is_fixed_link(mac_node)) { 875 struct phy_device *phy; 876 877 err = of_phy_register_fixed_link(mac_node); 878 if (err) 879 goto _return_dev_set_drvdata; 880 881 priv->fixed_link = kzalloc(sizeof(*priv->fixed_link), 882 GFP_KERNEL); 883 if (!priv->fixed_link) { 884 err = -ENOMEM; 885 goto _return_dev_set_drvdata; 886 } 887 888 priv->phy_node = of_node_get(mac_node); 889 phy = of_phy_find_device(priv->phy_node); 890 if (!phy) { 891 err = -EINVAL; 892 goto _return_dev_set_drvdata; 893 } 894 895 priv->fixed_link->link = phy->link; 896 priv->fixed_link->speed = phy->speed; 897 priv->fixed_link->duplex = phy->duplex; 898 priv->fixed_link->pause = phy->pause; 899 priv->fixed_link->asym_pause = phy->asym_pause; 900 901 put_device(&phy->mdio.dev); 902 } 903 904 err = mac_dev->init(mac_dev); 905 if (err < 0) { 906 dev_err(dev, "mac_dev->init() = %d\n", err); 907 of_node_put(priv->phy_node); 908 goto _return_dev_set_drvdata; 909 } 910 911 /* pause frame autonegotiation enabled */ 912 mac_dev->autoneg_pause = true; 913 914 /* By intializing the values to false, force FMD to enable PAUSE frames 915 * on RX and TX 916 */ 917 mac_dev->rx_pause_req = true; 918 mac_dev->tx_pause_req = true; 919 mac_dev->rx_pause_active = false; 920 mac_dev->tx_pause_active = false; 921 err = fman_set_mac_active_pause(mac_dev, true, true); 922 if (err < 0) 923 dev_err(dev, "fman_set_mac_active_pause() = %d\n", err); 924 925 dev_info(dev, "FMan MAC address: %02hx:%02hx:%02hx:%02hx:%02hx:%02hx\n", 926 mac_dev->addr[0], mac_dev->addr[1], mac_dev->addr[2], 927 mac_dev->addr[3], mac_dev->addr[4], mac_dev->addr[5]); 928 929 priv->eth_dev = dpaa_eth_add_device(fman_id, mac_dev, mac_node); 930 if (IS_ERR(priv->eth_dev)) { 931 dev_err(dev, "failed to add Ethernet platform device for MAC %d\n", 932 priv->cell_index); 933 priv->eth_dev = NULL; 934 } 935 936 goto _return; 937 938 _return_of_node_put: 939 of_node_put(dev_node); 940 _return_dev_set_drvdata: 941 kfree(priv->fixed_link); 942 dev_set_drvdata(dev, NULL); 943 _return: 944 return err; 945 } 946 947 static struct platform_driver mac_driver = { 948 .driver = { 949 .name = KBUILD_MODNAME, 950 .of_match_table = mac_match, 951 }, 952 .probe = mac_probe, 953 }; 954 955 builtin_platform_driver(mac_driver); 956