1 /* 2 * AMD 10Gb Ethernet driver 3 * 4 * This file is available to you under your choice of the following two 5 * licenses: 6 * 7 * License 1: GPLv2 8 * 9 * Copyright (c) 2014 Advanced Micro Devices, Inc. 10 * 11 * This file is free software; you may copy, redistribute and/or modify 12 * it under the terms of the GNU General Public License as published by 13 * the Free Software Foundation, either version 2 of the License, or (at 14 * your option) any later version. 15 * 16 * This file is distributed in the hope that it will be useful, but 17 * WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 19 * General Public License for more details. 20 * 21 * You should have received a copy of the GNU General Public License 22 * along with this program. If not, see <http://www.gnu.org/licenses/>. 23 * 24 * This file incorporates work covered by the following copyright and 25 * permission notice: 26 * The Synopsys DWC ETHER XGMAC Software Driver and documentation 27 * (hereinafter "Software") is an unsupported proprietary work of Synopsys, 28 * Inc. unless otherwise expressly agreed to in writing between Synopsys 29 * and you. 30 * 31 * The Software IS NOT an item of Licensed Software or Licensed Product 32 * under any End User Software License Agreement or Agreement for Licensed 33 * Product with Synopsys or any supplement thereto. Permission is hereby 34 * granted, free of charge, to any person obtaining a copy of this software 35 * annotated with this license and the Software, to deal in the Software 36 * without restriction, including without limitation the rights to use, 37 * copy, modify, merge, publish, distribute, sublicense, and/or sell copies 38 * of the Software, and to permit persons to whom the Software is furnished 39 * to do so, subject to the following conditions: 40 * 41 * The above copyright notice and this permission notice shall be included 42 * in all copies or substantial portions of the Software. 43 * 44 * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" 45 * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 46 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 47 * PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS 48 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 49 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 50 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 51 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 52 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 53 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 54 * THE POSSIBILITY OF SUCH DAMAGE. 55 * 56 * 57 * License 2: Modified BSD 58 * 59 * Copyright (c) 2014 Advanced Micro Devices, Inc. 60 * All rights reserved. 61 * 62 * Redistribution and use in source and binary forms, with or without 63 * modification, are permitted provided that the following conditions are met: 64 * * Redistributions of source code must retain the above copyright 65 * notice, this list of conditions and the following disclaimer. 66 * * Redistributions in binary form must reproduce the above copyright 67 * notice, this list of conditions and the following disclaimer in the 68 * documentation and/or other materials provided with the distribution. 69 * * Neither the name of Advanced Micro Devices, Inc. nor the 70 * names of its contributors may be used to endorse or promote products 71 * derived from this software without specific prior written permission. 72 * 73 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 74 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 75 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 76 * ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY 77 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 78 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 79 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 80 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 81 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 82 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 83 * 84 * This file incorporates work covered by the following copyright and 85 * permission notice: 86 * The Synopsys DWC ETHER XGMAC Software Driver and documentation 87 * (hereinafter "Software") is an unsupported proprietary work of Synopsys, 88 * Inc. unless otherwise expressly agreed to in writing between Synopsys 89 * and you. 90 * 91 * The Software IS NOT an item of Licensed Software or Licensed Product 92 * under any End User Software License Agreement or Agreement for Licensed 93 * Product with Synopsys or any supplement thereto. Permission is hereby 94 * granted, free of charge, to any person obtaining a copy of this software 95 * annotated with this license and the Software, to deal in the Software 96 * without restriction, including without limitation the rights to use, 97 * copy, modify, merge, publish, distribute, sublicense, and/or sell copies 98 * of the Software, and to permit persons to whom the Software is furnished 99 * to do so, subject to the following conditions: 100 * 101 * The above copyright notice and this permission notice shall be included 102 * in all copies or substantial portions of the Software. 103 * 104 * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" 105 * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 106 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 107 * PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS 108 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 109 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 110 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 111 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 112 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 113 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 114 * THE POSSIBILITY OF SUCH DAMAGE. 115 */ 116 117 #include <linux/module.h> 118 #include <linux/device.h> 119 #include <linux/platform_device.h> 120 #include <linux/spinlock.h> 121 #include <linux/netdevice.h> 122 #include <linux/etherdevice.h> 123 #include <linux/io.h> 124 #include <linux/of.h> 125 #include <linux/of_net.h> 126 #include <linux/of_address.h> 127 #include <linux/clk.h> 128 #include <linux/property.h> 129 #include <linux/acpi.h> 130 131 #include "xgbe.h" 132 #include "xgbe-common.h" 133 134 MODULE_AUTHOR("Tom Lendacky <thomas.lendacky@amd.com>"); 135 MODULE_LICENSE("Dual BSD/GPL"); 136 MODULE_VERSION(XGBE_DRV_VERSION); 137 MODULE_DESCRIPTION(XGBE_DRV_DESC); 138 139 static void xgbe_default_config(struct xgbe_prv_data *pdata) 140 { 141 DBGPR("-->xgbe_default_config\n"); 142 143 pdata->pblx8 = DMA_PBL_X8_ENABLE; 144 pdata->tx_sf_mode = MTL_TSF_ENABLE; 145 pdata->tx_threshold = MTL_TX_THRESHOLD_64; 146 pdata->tx_pbl = DMA_PBL_16; 147 pdata->tx_osp_mode = DMA_OSP_ENABLE; 148 pdata->rx_sf_mode = MTL_RSF_DISABLE; 149 pdata->rx_threshold = MTL_RX_THRESHOLD_64; 150 pdata->rx_pbl = DMA_PBL_16; 151 pdata->pause_autoneg = 1; 152 pdata->tx_pause = 1; 153 pdata->rx_pause = 1; 154 pdata->phy_speed = SPEED_UNKNOWN; 155 pdata->power_down = 0; 156 pdata->default_autoneg = AUTONEG_ENABLE; 157 pdata->default_speed = SPEED_10000; 158 159 DBGPR("<--xgbe_default_config\n"); 160 } 161 162 static void xgbe_init_all_fptrs(struct xgbe_prv_data *pdata) 163 { 164 xgbe_init_function_ptrs_dev(&pdata->hw_if); 165 xgbe_init_function_ptrs_desc(&pdata->desc_if); 166 } 167 168 #ifdef CONFIG_ACPI 169 static int xgbe_acpi_support(struct xgbe_prv_data *pdata) 170 { 171 struct acpi_device *adev = pdata->adev; 172 struct device *dev = pdata->dev; 173 u32 property; 174 acpi_handle handle; 175 acpi_status status; 176 unsigned long long data; 177 int cca; 178 int ret; 179 180 /* Obtain the system clock setting */ 181 ret = device_property_read_u32(dev, XGBE_ACPI_DMA_FREQ, &property); 182 if (ret) { 183 dev_err(dev, "unable to obtain %s property\n", 184 XGBE_ACPI_DMA_FREQ); 185 return ret; 186 } 187 pdata->sysclk_rate = property; 188 189 /* Obtain the PTP clock setting */ 190 ret = device_property_read_u32(dev, XGBE_ACPI_PTP_FREQ, &property); 191 if (ret) { 192 dev_err(dev, "unable to obtain %s property\n", 193 XGBE_ACPI_PTP_FREQ); 194 return ret; 195 } 196 pdata->ptpclk_rate = property; 197 198 /* Retrieve the device cache coherency value */ 199 handle = adev->handle; 200 do { 201 status = acpi_evaluate_integer(handle, "_CCA", NULL, &data); 202 if (!ACPI_FAILURE(status)) { 203 cca = data; 204 break; 205 } 206 207 status = acpi_get_parent(handle, &handle); 208 } while (!ACPI_FAILURE(status)); 209 210 if (ACPI_FAILURE(status)) { 211 dev_err(dev, "error obtaining acpi coherency value\n"); 212 return -EINVAL; 213 } 214 pdata->coherent = !!cca; 215 216 return 0; 217 } 218 #else /* CONFIG_ACPI */ 219 static int xgbe_acpi_support(struct xgbe_prv_data *pdata) 220 { 221 return -EINVAL; 222 } 223 #endif /* CONFIG_ACPI */ 224 225 #ifdef CONFIG_OF 226 static int xgbe_of_support(struct xgbe_prv_data *pdata) 227 { 228 struct device *dev = pdata->dev; 229 230 /* Obtain the system clock setting */ 231 pdata->sysclk = devm_clk_get(dev, XGBE_DMA_CLOCK); 232 if (IS_ERR(pdata->sysclk)) { 233 dev_err(dev, "dma devm_clk_get failed\n"); 234 return PTR_ERR(pdata->sysclk); 235 } 236 pdata->sysclk_rate = clk_get_rate(pdata->sysclk); 237 238 /* Obtain the PTP clock setting */ 239 pdata->ptpclk = devm_clk_get(dev, XGBE_PTP_CLOCK); 240 if (IS_ERR(pdata->ptpclk)) { 241 dev_err(dev, "ptp devm_clk_get failed\n"); 242 return PTR_ERR(pdata->ptpclk); 243 } 244 pdata->ptpclk_rate = clk_get_rate(pdata->ptpclk); 245 246 /* Retrieve the device cache coherency value */ 247 pdata->coherent = of_dma_is_coherent(dev->of_node); 248 249 return 0; 250 } 251 #else /* CONFIG_OF */ 252 static int xgbe_of_support(struct xgbe_prv_data *pdata) 253 { 254 return -EINVAL; 255 } 256 #endif /*CONFIG_OF */ 257 258 static int xgbe_probe(struct platform_device *pdev) 259 { 260 struct xgbe_prv_data *pdata; 261 struct xgbe_hw_if *hw_if; 262 struct xgbe_desc_if *desc_if; 263 struct net_device *netdev; 264 struct device *dev = &pdev->dev; 265 struct resource *res; 266 const char *phy_mode; 267 unsigned int i; 268 int ret; 269 270 DBGPR("--> xgbe_probe\n"); 271 272 netdev = alloc_etherdev_mq(sizeof(struct xgbe_prv_data), 273 XGBE_MAX_DMA_CHANNELS); 274 if (!netdev) { 275 dev_err(dev, "alloc_etherdev failed\n"); 276 ret = -ENOMEM; 277 goto err_alloc; 278 } 279 SET_NETDEV_DEV(netdev, dev); 280 pdata = netdev_priv(netdev); 281 pdata->netdev = netdev; 282 pdata->pdev = pdev; 283 pdata->adev = ACPI_COMPANION(dev); 284 pdata->dev = dev; 285 platform_set_drvdata(pdev, netdev); 286 287 spin_lock_init(&pdata->lock); 288 mutex_init(&pdata->xpcs_mutex); 289 mutex_init(&pdata->rss_mutex); 290 spin_lock_init(&pdata->tstamp_lock); 291 292 /* Check if we should use ACPI or DT */ 293 pdata->use_acpi = (!pdata->adev || acpi_disabled) ? 0 : 1; 294 295 /* Set and validate the number of descriptors for a ring */ 296 BUILD_BUG_ON_NOT_POWER_OF_2(XGBE_TX_DESC_CNT); 297 pdata->tx_desc_count = XGBE_TX_DESC_CNT; 298 if (pdata->tx_desc_count & (pdata->tx_desc_count - 1)) { 299 dev_err(dev, "tx descriptor count (%d) is not valid\n", 300 pdata->tx_desc_count); 301 ret = -EINVAL; 302 goto err_io; 303 } 304 BUILD_BUG_ON_NOT_POWER_OF_2(XGBE_RX_DESC_CNT); 305 pdata->rx_desc_count = XGBE_RX_DESC_CNT; 306 if (pdata->rx_desc_count & (pdata->rx_desc_count - 1)) { 307 dev_err(dev, "rx descriptor count (%d) is not valid\n", 308 pdata->rx_desc_count); 309 ret = -EINVAL; 310 goto err_io; 311 } 312 313 /* Obtain the mmio areas for the device */ 314 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 315 pdata->xgmac_regs = devm_ioremap_resource(dev, res); 316 if (IS_ERR(pdata->xgmac_regs)) { 317 dev_err(dev, "xgmac ioremap failed\n"); 318 ret = PTR_ERR(pdata->xgmac_regs); 319 goto err_io; 320 } 321 DBGPR(" xgmac_regs = %p\n", pdata->xgmac_regs); 322 323 res = platform_get_resource(pdev, IORESOURCE_MEM, 1); 324 pdata->xpcs_regs = devm_ioremap_resource(dev, res); 325 if (IS_ERR(pdata->xpcs_regs)) { 326 dev_err(dev, "xpcs ioremap failed\n"); 327 ret = PTR_ERR(pdata->xpcs_regs); 328 goto err_io; 329 } 330 DBGPR(" xpcs_regs = %p\n", pdata->xpcs_regs); 331 332 /* Retrieve the MAC address */ 333 ret = device_property_read_u8_array(dev, XGBE_MAC_ADDR_PROPERTY, 334 pdata->mac_addr, 335 sizeof(pdata->mac_addr)); 336 if (ret || !is_valid_ether_addr(pdata->mac_addr)) { 337 dev_err(dev, "invalid %s property\n", XGBE_MAC_ADDR_PROPERTY); 338 if (!ret) 339 ret = -EINVAL; 340 goto err_io; 341 } 342 343 /* Retrieve the PHY mode - it must be "xgmii" */ 344 ret = device_property_read_string(dev, XGBE_PHY_MODE_PROPERTY, 345 &phy_mode); 346 if (ret || strcmp(phy_mode, phy_modes(PHY_INTERFACE_MODE_XGMII))) { 347 dev_err(dev, "invalid %s property\n", XGBE_PHY_MODE_PROPERTY); 348 if (!ret) 349 ret = -EINVAL; 350 goto err_io; 351 } 352 pdata->phy_mode = PHY_INTERFACE_MODE_XGMII; 353 354 /* Check for per channel interrupt support */ 355 if (device_property_present(dev, XGBE_DMA_IRQS_PROPERTY)) 356 pdata->per_channel_irq = 1; 357 358 /* Obtain device settings unique to ACPI/OF */ 359 if (pdata->use_acpi) 360 ret = xgbe_acpi_support(pdata); 361 else 362 ret = xgbe_of_support(pdata); 363 if (ret) 364 goto err_io; 365 366 /* Set the DMA coherency values */ 367 if (pdata->coherent) { 368 pdata->axdomain = XGBE_DMA_OS_AXDOMAIN; 369 pdata->arcache = XGBE_DMA_OS_ARCACHE; 370 pdata->awcache = XGBE_DMA_OS_AWCACHE; 371 } else { 372 pdata->axdomain = XGBE_DMA_SYS_AXDOMAIN; 373 pdata->arcache = XGBE_DMA_SYS_ARCACHE; 374 pdata->awcache = XGBE_DMA_SYS_AWCACHE; 375 } 376 377 /* Get the device interrupt */ 378 ret = platform_get_irq(pdev, 0); 379 if (ret < 0) { 380 dev_err(dev, "platform_get_irq 0 failed\n"); 381 goto err_io; 382 } 383 pdata->dev_irq = ret; 384 385 netdev->irq = pdata->dev_irq; 386 netdev->base_addr = (unsigned long)pdata->xgmac_regs; 387 memcpy(netdev->dev_addr, pdata->mac_addr, netdev->addr_len); 388 389 /* Set all the function pointers */ 390 xgbe_init_all_fptrs(pdata); 391 hw_if = &pdata->hw_if; 392 desc_if = &pdata->desc_if; 393 394 /* Issue software reset to device */ 395 hw_if->exit(pdata); 396 397 /* Populate the hardware features */ 398 xgbe_get_all_hw_features(pdata); 399 400 /* Set default configuration data */ 401 xgbe_default_config(pdata); 402 403 /* Set the DMA mask */ 404 if (!dev->dma_mask) 405 dev->dma_mask = &dev->coherent_dma_mask; 406 ret = dma_set_mask_and_coherent(dev, 407 DMA_BIT_MASK(pdata->hw_feat.dma_width)); 408 if (ret) { 409 dev_err(dev, "dma_set_mask_and_coherent failed\n"); 410 goto err_io; 411 } 412 413 /* Calculate the number of Tx and Rx rings to be created 414 * -Tx (DMA) Channels map 1-to-1 to Tx Queues so set 415 * the number of Tx queues to the number of Tx channels 416 * enabled 417 * -Rx (DMA) Channels do not map 1-to-1 so use the actual 418 * number of Rx queues 419 */ 420 pdata->tx_ring_count = min_t(unsigned int, num_online_cpus(), 421 pdata->hw_feat.tx_ch_cnt); 422 pdata->tx_q_count = pdata->tx_ring_count; 423 ret = netif_set_real_num_tx_queues(netdev, pdata->tx_ring_count); 424 if (ret) { 425 dev_err(dev, "error setting real tx queue count\n"); 426 goto err_io; 427 } 428 429 pdata->rx_ring_count = min_t(unsigned int, 430 netif_get_num_default_rss_queues(), 431 pdata->hw_feat.rx_ch_cnt); 432 pdata->rx_q_count = pdata->hw_feat.rx_q_cnt; 433 ret = netif_set_real_num_rx_queues(netdev, pdata->rx_ring_count); 434 if (ret) { 435 dev_err(dev, "error setting real rx queue count\n"); 436 goto err_io; 437 } 438 439 /* Initialize RSS hash key and lookup table */ 440 netdev_rss_key_fill(pdata->rss_key, sizeof(pdata->rss_key)); 441 442 for (i = 0; i < XGBE_RSS_MAX_TABLE_SIZE; i++) 443 XGMAC_SET_BITS(pdata->rss_table[i], MAC_RSSDR, DMCH, 444 i % pdata->rx_ring_count); 445 446 XGMAC_SET_BITS(pdata->rss_options, MAC_RSSCR, IP2TE, 1); 447 XGMAC_SET_BITS(pdata->rss_options, MAC_RSSCR, TCP4TE, 1); 448 XGMAC_SET_BITS(pdata->rss_options, MAC_RSSCR, UDP4TE, 1); 449 450 /* Prepare to regsiter with MDIO */ 451 pdata->mii_bus_id = kasprintf(GFP_KERNEL, "%s", pdev->name); 452 if (!pdata->mii_bus_id) { 453 dev_err(dev, "failed to allocate mii bus id\n"); 454 ret = -ENOMEM; 455 goto err_io; 456 } 457 ret = xgbe_mdio_register(pdata); 458 if (ret) 459 goto err_bus_id; 460 461 /* Set device operations */ 462 netdev->netdev_ops = xgbe_get_netdev_ops(); 463 netdev->ethtool_ops = xgbe_get_ethtool_ops(); 464 #ifdef CONFIG_AMD_XGBE_DCB 465 netdev->dcbnl_ops = xgbe_get_dcbnl_ops(); 466 #endif 467 468 /* Set device features */ 469 netdev->hw_features = NETIF_F_SG | 470 NETIF_F_IP_CSUM | 471 NETIF_F_IPV6_CSUM | 472 NETIF_F_RXCSUM | 473 NETIF_F_TSO | 474 NETIF_F_TSO6 | 475 NETIF_F_GRO | 476 NETIF_F_HW_VLAN_CTAG_RX | 477 NETIF_F_HW_VLAN_CTAG_TX | 478 NETIF_F_HW_VLAN_CTAG_FILTER; 479 480 if (pdata->hw_feat.rss) 481 netdev->hw_features |= NETIF_F_RXHASH; 482 483 netdev->vlan_features |= NETIF_F_SG | 484 NETIF_F_IP_CSUM | 485 NETIF_F_IPV6_CSUM | 486 NETIF_F_TSO | 487 NETIF_F_TSO6; 488 489 netdev->features |= netdev->hw_features; 490 pdata->netdev_features = netdev->features; 491 492 netdev->priv_flags |= IFF_UNICAST_FLT; 493 494 /* Use default watchdog timeout */ 495 netdev->watchdog_timeo = 0; 496 497 xgbe_init_rx_coalesce(pdata); 498 xgbe_init_tx_coalesce(pdata); 499 500 netif_carrier_off(netdev); 501 ret = register_netdev(netdev); 502 if (ret) { 503 dev_err(dev, "net device registration failed\n"); 504 goto err_reg_netdev; 505 } 506 507 xgbe_ptp_register(pdata); 508 509 xgbe_debugfs_init(pdata); 510 511 netdev_notice(netdev, "net device enabled\n"); 512 513 DBGPR("<-- xgbe_probe\n"); 514 515 return 0; 516 517 err_reg_netdev: 518 xgbe_mdio_unregister(pdata); 519 520 err_bus_id: 521 kfree(pdata->mii_bus_id); 522 523 err_io: 524 free_netdev(netdev); 525 526 err_alloc: 527 dev_notice(dev, "net device not enabled\n"); 528 529 return ret; 530 } 531 532 static int xgbe_remove(struct platform_device *pdev) 533 { 534 struct net_device *netdev = platform_get_drvdata(pdev); 535 struct xgbe_prv_data *pdata = netdev_priv(netdev); 536 537 DBGPR("-->xgbe_remove\n"); 538 539 xgbe_debugfs_exit(pdata); 540 541 xgbe_ptp_unregister(pdata); 542 543 unregister_netdev(netdev); 544 545 xgbe_mdio_unregister(pdata); 546 547 kfree(pdata->mii_bus_id); 548 549 free_netdev(netdev); 550 551 DBGPR("<--xgbe_remove\n"); 552 553 return 0; 554 } 555 556 #ifdef CONFIG_PM 557 static int xgbe_suspend(struct device *dev) 558 { 559 struct net_device *netdev = dev_get_drvdata(dev); 560 int ret; 561 562 DBGPR("-->xgbe_suspend\n"); 563 564 if (!netif_running(netdev)) { 565 DBGPR("<--xgbe_dev_suspend\n"); 566 return -EINVAL; 567 } 568 569 ret = xgbe_powerdown(netdev, XGMAC_DRIVER_CONTEXT); 570 571 DBGPR("<--xgbe_suspend\n"); 572 573 return ret; 574 } 575 576 static int xgbe_resume(struct device *dev) 577 { 578 struct net_device *netdev = dev_get_drvdata(dev); 579 int ret; 580 581 DBGPR("-->xgbe_resume\n"); 582 583 if (!netif_running(netdev)) { 584 DBGPR("<--xgbe_dev_resume\n"); 585 return -EINVAL; 586 } 587 588 ret = xgbe_powerup(netdev, XGMAC_DRIVER_CONTEXT); 589 590 DBGPR("<--xgbe_resume\n"); 591 592 return ret; 593 } 594 #endif /* CONFIG_PM */ 595 596 #ifdef CONFIG_ACPI 597 static const struct acpi_device_id xgbe_acpi_match[] = { 598 { "AMDI8001", 0 }, 599 {}, 600 }; 601 602 MODULE_DEVICE_TABLE(acpi, xgbe_acpi_match); 603 #endif 604 605 #ifdef CONFIG_OF 606 static const struct of_device_id xgbe_of_match[] = { 607 { .compatible = "amd,xgbe-seattle-v1a", }, 608 {}, 609 }; 610 611 MODULE_DEVICE_TABLE(of, xgbe_of_match); 612 #endif 613 614 static SIMPLE_DEV_PM_OPS(xgbe_pm_ops, xgbe_suspend, xgbe_resume); 615 616 static struct platform_driver xgbe_driver = { 617 .driver = { 618 .name = "amd-xgbe", 619 #ifdef CONFIG_ACPI 620 .acpi_match_table = xgbe_acpi_match, 621 #endif 622 #ifdef CONFIG_OF 623 .of_match_table = xgbe_of_match, 624 #endif 625 .pm = &xgbe_pm_ops, 626 }, 627 .probe = xgbe_probe, 628 .remove = xgbe_remove, 629 }; 630 631 module_platform_driver(xgbe_driver); 632