drivers/net/ethernet/amd/xgbe/xgbe-main.c

   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 device *dev = pdata->dev;
 172         u32 property;
 173         int ret;
 174
 175         /* Obtain the system clock setting */
 176         ret = device_property_read_u32(dev, XGBE_ACPI_DMA_FREQ, &property);
 177         if (ret) {
 178                 dev_err(dev, "unable to obtain %s property\n",
 179                         XGBE_ACPI_DMA_FREQ);
 180                 return ret;
 181         }
 182         pdata->sysclk_rate = property;
 183
 184         /* Obtain the PTP clock setting */
 185         ret = device_property_read_u32(dev, XGBE_ACPI_PTP_FREQ, &property);
 186         if (ret) {
 187                 dev_err(dev, "unable to obtain %s property\n",
 188                         XGBE_ACPI_PTP_FREQ);
 189                 return ret;
 190         }
 191         pdata->ptpclk_rate = property;
 192
 193         return 0;
 194 }
 195 #else   /* CONFIG_ACPI */
 196 static int xgbe_acpi_support(struct xgbe_prv_data *pdata)
 197 {
 198         return -EINVAL;
 199 }
 200 #endif  /* CONFIG_ACPI */
 201
 202 #ifdef CONFIG_OF
 203 static int xgbe_of_support(struct xgbe_prv_data *pdata)
 204 {
 205         struct device *dev = pdata->dev;
 206
 207         /* Obtain the system clock setting */
 208         pdata->sysclk = devm_clk_get(dev, XGBE_DMA_CLOCK);
 209         if (IS_ERR(pdata->sysclk)) {
 210                 dev_err(dev, "dma devm_clk_get failed\n");
 211                 return PTR_ERR(pdata->sysclk);
 212         }
 213         pdata->sysclk_rate = clk_get_rate(pdata->sysclk);
 214
 215         /* Obtain the PTP clock setting */
 216         pdata->ptpclk = devm_clk_get(dev, XGBE_PTP_CLOCK);
 217         if (IS_ERR(pdata->ptpclk)) {
 218                 dev_err(dev, "ptp devm_clk_get failed\n");
 219                 return PTR_ERR(pdata->ptpclk);
 220         }
 221         pdata->ptpclk_rate = clk_get_rate(pdata->ptpclk);
 222
 223         return 0;
 224 }
 225 #else   /* CONFIG_OF */
 226 static int xgbe_of_support(struct xgbe_prv_data *pdata)
 227 {
 228         return -EINVAL;
 229 }
 230 #endif  /*CONFIG_OF */
 231
 232 static int xgbe_probe(struct platform_device *pdev)
 233 {
 234         struct xgbe_prv_data *pdata;
 235         struct xgbe_hw_if *hw_if;
 236         struct xgbe_desc_if *desc_if;
 237         struct net_device *netdev;
 238         struct device *dev = &pdev->dev;
 239         struct resource *res;
 240         const char *phy_mode;
 241         unsigned int i;
 242         int ret;
 243
 244         DBGPR("--> xgbe_probe\n");
 245
 246         netdev = alloc_etherdev_mq(sizeof(struct xgbe_prv_data),
 247                                    XGBE_MAX_DMA_CHANNELS);
 248         if (!netdev) {
 249                 dev_err(dev, "alloc_etherdev failed\n");
 250                 ret = -ENOMEM;
 251                 goto err_alloc;
 252         }
 253         SET_NETDEV_DEV(netdev, dev);
 254         pdata = netdev_priv(netdev);
 255         pdata->netdev = netdev;
 256         pdata->pdev = pdev;
 257         pdata->adev = ACPI_COMPANION(dev);
 258         pdata->dev = dev;
 259         platform_set_drvdata(pdev, netdev);
 260
 261         spin_lock_init(&pdata->lock);
 262         mutex_init(&pdata->xpcs_mutex);
 263         mutex_init(&pdata->rss_mutex);
 264         spin_lock_init(&pdata->tstamp_lock);
 265
 266         /* Check if we should use ACPI or DT */
 267         pdata->use_acpi = (!pdata->adev || acpi_disabled) ? 0 : 1;
 268
 269         /* Set and validate the number of descriptors for a ring */
 270         BUILD_BUG_ON_NOT_POWER_OF_2(XGBE_TX_DESC_CNT);
 271         pdata->tx_desc_count = XGBE_TX_DESC_CNT;
 272         if (pdata->tx_desc_count & (pdata->tx_desc_count - 1)) {
 273                 dev_err(dev, "tx descriptor count (%d) is not valid\n",
 274                         pdata->tx_desc_count);
 275                 ret = -EINVAL;
 276                 goto err_io;
 277         }
 278         BUILD_BUG_ON_NOT_POWER_OF_2(XGBE_RX_DESC_CNT);
 279         pdata->rx_desc_count = XGBE_RX_DESC_CNT;
 280         if (pdata->rx_desc_count & (pdata->rx_desc_count - 1)) {
 281                 dev_err(dev, "rx descriptor count (%d) is not valid\n",
 282                         pdata->rx_desc_count);
 283                 ret = -EINVAL;
 284                 goto err_io;
 285         }
 286
 287         /* Obtain the mmio areas for the device */
 288         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 289         pdata->xgmac_regs = devm_ioremap_resource(dev, res);
 290         if (IS_ERR(pdata->xgmac_regs)) {
 291                 dev_err(dev, "xgmac ioremap failed\n");
 292                 ret = PTR_ERR(pdata->xgmac_regs);
 293                 goto err_io;
 294         }
 295         DBGPR("  xgmac_regs = %p\n", pdata->xgmac_regs);
 296
 297         res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
 298         pdata->xpcs_regs = devm_ioremap_resource(dev, res);
 299         if (IS_ERR(pdata->xpcs_regs)) {
 300                 dev_err(dev, "xpcs ioremap failed\n");
 301                 ret = PTR_ERR(pdata->xpcs_regs);
 302                 goto err_io;
 303         }
 304         DBGPR("  xpcs_regs  = %p\n", pdata->xpcs_regs);
 305
 306         /* Retrieve the MAC address */
 307         ret = device_property_read_u8_array(dev, XGBE_MAC_ADDR_PROPERTY,
 308                                             pdata->mac_addr,
 309                                             sizeof(pdata->mac_addr));
 310         if (ret || !is_valid_ether_addr(pdata->mac_addr)) {
 311                 dev_err(dev, "invalid %s property\n", XGBE_MAC_ADDR_PROPERTY);
 312                 if (!ret)
 313                         ret = -EINVAL;
 314                 goto err_io;
 315         }
 316
 317         /* Retrieve the PHY mode - it must be "xgmii" */
 318         ret = device_property_read_string(dev, XGBE_PHY_MODE_PROPERTY,
 319                                           &phy_mode);
 320         if (ret || strcmp(phy_mode, phy_modes(PHY_INTERFACE_MODE_XGMII))) {
 321                 dev_err(dev, "invalid %s property\n", XGBE_PHY_MODE_PROPERTY);
 322                 if (!ret)
 323                         ret = -EINVAL;
 324                 goto err_io;
 325         }
 326         pdata->phy_mode = PHY_INTERFACE_MODE_XGMII;
 327
 328         /* Check for per channel interrupt support */
 329         if (device_property_present(dev, XGBE_DMA_IRQS_PROPERTY))
 330                 pdata->per_channel_irq = 1;
 331
 332         /* Obtain device settings unique to ACPI/OF */
 333         if (pdata->use_acpi)
 334                 ret = xgbe_acpi_support(pdata);
 335         else
 336                 ret = xgbe_of_support(pdata);
 337         if (ret)
 338                 goto err_io;
 339
 340         /* Set the DMA coherency values */
 341         pdata->coherent = device_dma_is_coherent(pdata->dev);
 342         if (pdata->coherent) {
 343                 pdata->axdomain = XGBE_DMA_OS_AXDOMAIN;
 344                 pdata->arcache = XGBE_DMA_OS_ARCACHE;
 345                 pdata->awcache = XGBE_DMA_OS_AWCACHE;
 346         } else {
 347                 pdata->axdomain = XGBE_DMA_SYS_AXDOMAIN;
 348                 pdata->arcache = XGBE_DMA_SYS_ARCACHE;
 349                 pdata->awcache = XGBE_DMA_SYS_AWCACHE;
 350         }
 351
 352         /* Get the device interrupt */
 353         ret = platform_get_irq(pdev, 0);
 354         if (ret < 0) {
 355                 dev_err(dev, "platform_get_irq 0 failed\n");
 356                 goto err_io;
 357         }
 358         pdata->dev_irq = ret;
 359
 360         netdev->irq = pdata->dev_irq;
 361         netdev->base_addr = (unsigned long)pdata->xgmac_regs;
 362         memcpy(netdev->dev_addr, pdata->mac_addr, netdev->addr_len);
 363
 364         /* Set all the function pointers */
 365         xgbe_init_all_fptrs(pdata);
 366         hw_if = &pdata->hw_if;
 367         desc_if = &pdata->desc_if;
 368
 369         /* Issue software reset to device */
 370         hw_if->exit(pdata);
 371
 372         /* Populate the hardware features */
 373         xgbe_get_all_hw_features(pdata);
 374
 375         /* Set default configuration data */
 376         xgbe_default_config(pdata);
 377
 378         /* Set the DMA mask */
 379         if (!dev->dma_mask)
 380                 dev->dma_mask = &dev->coherent_dma_mask;
 381         ret = dma_set_mask_and_coherent(dev,
 382                                         DMA_BIT_MASK(pdata->hw_feat.dma_width));
 383         if (ret) {
 384                 dev_err(dev, "dma_set_mask_and_coherent failed\n");
 385                 goto err_io;
 386         }
 387
 388         /* Calculate the number of Tx and Rx rings to be created
 389          *  -Tx (DMA) Channels map 1-to-1 to Tx Queues so set
 390          *   the number of Tx queues to the number of Tx channels
 391          *   enabled
 392          *  -Rx (DMA) Channels do not map 1-to-1 so use the actual
 393          *   number of Rx queues
 394          */
 395         pdata->tx_ring_count = min_t(unsigned int, num_online_cpus(),
 396                                      pdata->hw_feat.tx_ch_cnt);
 397         pdata->tx_q_count = pdata->tx_ring_count;
 398         ret = netif_set_real_num_tx_queues(netdev, pdata->tx_ring_count);
 399         if (ret) {
 400                 dev_err(dev, "error setting real tx queue count\n");
 401                 goto err_io;
 402         }
 403
 404         pdata->rx_ring_count = min_t(unsigned int,
 405                                      netif_get_num_default_rss_queues(),
 406                                      pdata->hw_feat.rx_ch_cnt);
 407         pdata->rx_q_count = pdata->hw_feat.rx_q_cnt;
 408         ret = netif_set_real_num_rx_queues(netdev, pdata->rx_ring_count);
 409         if (ret) {
 410                 dev_err(dev, "error setting real rx queue count\n");
 411                 goto err_io;
 412         }
 413
 414         /* Initialize RSS hash key and lookup table */
 415         netdev_rss_key_fill(pdata->rss_key, sizeof(pdata->rss_key));
 416
 417         for (i = 0; i < XGBE_RSS_MAX_TABLE_SIZE; i++)
 418                 XGMAC_SET_BITS(pdata->rss_table[i], MAC_RSSDR, DMCH,
 419                                i % pdata->rx_ring_count);
 420
 421         XGMAC_SET_BITS(pdata->rss_options, MAC_RSSCR, IP2TE, 1);
 422         XGMAC_SET_BITS(pdata->rss_options, MAC_RSSCR, TCP4TE, 1);
 423         XGMAC_SET_BITS(pdata->rss_options, MAC_RSSCR, UDP4TE, 1);
 424
 425         /* Prepare to regsiter with MDIO */
 426         pdata->mii_bus_id = kasprintf(GFP_KERNEL, "%s", pdev->name);
 427         if (!pdata->mii_bus_id) {
 428                 dev_err(dev, "failed to allocate mii bus id\n");
 429                 ret = -ENOMEM;
 430                 goto err_io;
 431         }
 432         ret = xgbe_mdio_register(pdata);
 433         if (ret)
 434                 goto err_bus_id;
 435
 436         /* Set device operations */
 437         netdev->netdev_ops = xgbe_get_netdev_ops();
 438         netdev->ethtool_ops = xgbe_get_ethtool_ops();
 439 #ifdef CONFIG_AMD_XGBE_DCB
 440         netdev->dcbnl_ops = xgbe_get_dcbnl_ops();
 441 #endif
 442
 443         /* Set device features */
 444         netdev->hw_features = NETIF_F_SG |
 445                               NETIF_F_IP_CSUM |
 446                               NETIF_F_IPV6_CSUM |
 447                               NETIF_F_RXCSUM |
 448                               NETIF_F_TSO |
 449                               NETIF_F_TSO6 |
 450                               NETIF_F_GRO |
 451                               NETIF_F_HW_VLAN_CTAG_RX |
 452                               NETIF_F_HW_VLAN_CTAG_TX |
 453                               NETIF_F_HW_VLAN_CTAG_FILTER;
 454
 455         if (pdata->hw_feat.rss)
 456                 netdev->hw_features |= NETIF_F_RXHASH;
 457
 458         netdev->vlan_features |= NETIF_F_SG |
 459                                  NETIF_F_IP_CSUM |
 460                                  NETIF_F_IPV6_CSUM |
 461                                  NETIF_F_TSO |
 462                                  NETIF_F_TSO6;
 463
 464         netdev->features |= netdev->hw_features;
 465         pdata->netdev_features = netdev->features;
 466
 467         netdev->priv_flags |= IFF_UNICAST_FLT;
 468
 469         /* Use default watchdog timeout */
 470         netdev->watchdog_timeo = 0;
 471
 472         xgbe_init_rx_coalesce(pdata);
 473         xgbe_init_tx_coalesce(pdata);
 474
 475         netif_carrier_off(netdev);
 476         ret = register_netdev(netdev);
 477         if (ret) {
 478                 dev_err(dev, "net device registration failed\n");
 479                 goto err_reg_netdev;
 480         }
 481
 482         xgbe_ptp_register(pdata);
 483
 484         xgbe_debugfs_init(pdata);
 485
 486         netdev_notice(netdev, "net device enabled\n");
 487
 488         DBGPR("<-- xgbe_probe\n");
 489
 490         return 0;
 491
 492 err_reg_netdev:
 493         xgbe_mdio_unregister(pdata);
 494
 495 err_bus_id:
 496         kfree(pdata->mii_bus_id);
 497
 498 err_io:
 499         free_netdev(netdev);
 500
 501 err_alloc:
 502         dev_notice(dev, "net device not enabled\n");
 503
 504         return ret;
 505 }
 506
 507 static int xgbe_remove(struct platform_device *pdev)
 508 {
 509         struct net_device *netdev = platform_get_drvdata(pdev);
 510         struct xgbe_prv_data *pdata = netdev_priv(netdev);
 511
 512         DBGPR("-->xgbe_remove\n");
 513
 514         xgbe_debugfs_exit(pdata);
 515
 516         xgbe_ptp_unregister(pdata);
 517
 518         unregister_netdev(netdev);
 519
 520         xgbe_mdio_unregister(pdata);
 521
 522         kfree(pdata->mii_bus_id);
 523
 524         free_netdev(netdev);
 525
 526         DBGPR("<--xgbe_remove\n");
 527
 528         return 0;
 529 }
 530
 531 #ifdef CONFIG_PM
 532 static int xgbe_suspend(struct device *dev)
 533 {
 534         struct net_device *netdev = dev_get_drvdata(dev);
 535         int ret;
 536
 537         DBGPR("-->xgbe_suspend\n");
 538
 539         if (!netif_running(netdev)) {
 540                 DBGPR("<--xgbe_dev_suspend\n");
 541                 return -EINVAL;
 542         }
 543
 544         ret = xgbe_powerdown(netdev, XGMAC_DRIVER_CONTEXT);
 545
 546         DBGPR("<--xgbe_suspend\n");
 547
 548         return ret;
 549 }
 550
 551 static int xgbe_resume(struct device *dev)
 552 {
 553         struct net_device *netdev = dev_get_drvdata(dev);
 554         int ret;
 555
 556         DBGPR("-->xgbe_resume\n");
 557
 558         if (!netif_running(netdev)) {
 559                 DBGPR("<--xgbe_dev_resume\n");
 560                 return -EINVAL;
 561         }
 562
 563         ret = xgbe_powerup(netdev, XGMAC_DRIVER_CONTEXT);
 564
 565         DBGPR("<--xgbe_resume\n");
 566
 567         return ret;
 568 }
 569 #endif /* CONFIG_PM */
 570
 571 #ifdef CONFIG_ACPI
 572 static const struct acpi_device_id xgbe_acpi_match[] = {
 573         { "AMDI8001", 0 },
 574         {},
 575 };
 576
 577 MODULE_DEVICE_TABLE(acpi, xgbe_acpi_match);
 578 #endif
 579
 580 #ifdef CONFIG_OF
 581 static const struct of_device_id xgbe_of_match[] = {
 582         { .compatible = "amd,xgbe-seattle-v1a", },
 583         {},
 584 };
 585
 586 MODULE_DEVICE_TABLE(of, xgbe_of_match);
 587 #endif
 588
 589 static SIMPLE_DEV_PM_OPS(xgbe_pm_ops, xgbe_suspend, xgbe_resume);
 590
 591 static struct platform_driver xgbe_driver = {
 592         .driver = {
 593                 .name = "amd-xgbe",
 594 #ifdef CONFIG_ACPI
 595                 .acpi_match_table = xgbe_acpi_match,
 596 #endif
 597 #ifdef CONFIG_OF
 598                 .of_match_table = xgbe_of_match,
 599 #endif
 600                 .pm = &xgbe_pm_ops,
 601         },
 602         .probe = xgbe_probe,
 603         .remove = xgbe_remove,
 604 };
 605
 606 module_platform_driver(xgbe_driver);