drivers/net/ethernet/moxa/moxart_ether.c

   1 /* MOXA ART Ethernet (RTL8201CP) driver.
   2  *
   3  * Copyright (C) 2013 Jonas Jensen
   4  *
   5  * Jonas Jensen <jonas.jensen@gmail.com>
   6  *
   7  * Based on code from
   8  * Moxa Technology Co., Ltd. <www.moxa.com>
   9  *
  10  * This file is licensed under the terms of the GNU General Public
  11  * License version 2.  This program is licensed "as is" without any
  12  * warranty of any kind, whether express or implied.
  13  */
  14
  15 #include <linux/module.h>
  16 #include <linux/netdevice.h>
  17 #include <linux/etherdevice.h>
  18 #include <linux/skbuff.h>
  19 #include <linux/dma-mapping.h>
  20 #include <linux/ethtool.h>
  21 #include <linux/platform_device.h>
  22 #include <linux/interrupt.h>
  23 #include <linux/irq.h>
  24 #include <linux/of_address.h>
  25 #include <linux/of_irq.h>
  26 #include <linux/crc32.h>
  27 #include <linux/crc32c.h>
  28 #include <linux/circ_buf.h>
  29
  30 #include "moxart_ether.h"
  31
  32 static inline void moxart_desc_write(u32 data, __le32 *desc)
  33 {
  34         *desc = cpu_to_le32(data);
  35 }
  36
  37 static inline u32 moxart_desc_read(__le32 *desc)
  38 {
  39         return le32_to_cpu(*desc);
  40 }
  41
  42 static inline void moxart_emac_write(struct net_device *ndev,
  43                                      unsigned int reg, unsigned long value)
  44 {
  45         struct moxart_mac_priv_t *priv = netdev_priv(ndev);
  46
  47         writel(value, priv->base + reg);
  48 }
  49
  50 static void moxart_update_mac_address(struct net_device *ndev)
  51 {
  52         moxart_emac_write(ndev, REG_MAC_MS_ADDRESS,
  53                           ((ndev->dev_addr[0] << 8) | (ndev->dev_addr[1])));
  54         moxart_emac_write(ndev, REG_MAC_MS_ADDRESS + 4,
  55                           ((ndev->dev_addr[2] << 24) |
  56                            (ndev->dev_addr[3] << 16) |
  57                            (ndev->dev_addr[4] << 8) |
  58                            (ndev->dev_addr[5])));
  59 }
  60
  61 static int moxart_set_mac_address(struct net_device *ndev, void *addr)
  62 {
  63         struct sockaddr *address = addr;
  64
  65         eth_hw_addr_set(ndev, address->sa_data);
  66         moxart_update_mac_address(ndev);
  67
  68         return 0;
  69 }
  70
  71 static void moxart_mac_free_memory(struct net_device *ndev)
  72 {
  73         struct moxart_mac_priv_t *priv = netdev_priv(ndev);
  74
  75         if (priv->tx_desc_base)
  76                 dma_free_coherent(&priv->pdev->dev,
  77                                   TX_REG_DESC_SIZE * TX_DESC_NUM,
  78                                   priv->tx_desc_base, priv->tx_base);
  79
  80         if (priv->rx_desc_base)
  81                 dma_free_coherent(&priv->pdev->dev,
  82                                   RX_REG_DESC_SIZE * RX_DESC_NUM,
  83                                   priv->rx_desc_base, priv->rx_base);
  84
  85         kfree(priv->tx_buf_base);
  86         kfree(priv->rx_buf_base);
  87 }
  88
  89 static void moxart_mac_reset(struct net_device *ndev)
  90 {
  91         struct moxart_mac_priv_t *priv = netdev_priv(ndev);
  92
  93         writel(SW_RST, priv->base + REG_MAC_CTRL);
  94         while (readl(priv->base + REG_MAC_CTRL) & SW_RST)
  95                 mdelay(10);
  96
  97         writel(0, priv->base + REG_INTERRUPT_MASK);
  98
  99         priv->reg_maccr = RX_BROADPKT | FULLDUP | CRC_APD | RX_FTL;
 100 }
 101
 102 static void moxart_mac_enable(struct net_device *ndev)
 103 {
 104         struct moxart_mac_priv_t *priv = netdev_priv(ndev);
 105
 106         writel(0x00001010, priv->base + REG_INT_TIMER_CTRL);
 107         writel(0x00000001, priv->base + REG_APOLL_TIMER_CTRL);
 108         writel(0x00000390, priv->base + REG_DMA_BLEN_CTRL);
 109
 110         priv->reg_imr |= (RPKT_FINISH_M | XPKT_FINISH_M);
 111         writel(priv->reg_imr, priv->base + REG_INTERRUPT_MASK);
 112
 113         priv->reg_maccr |= (RCV_EN | XMT_EN | RDMA_EN | XDMA_EN);
 114         writel(priv->reg_maccr, priv->base + REG_MAC_CTRL);
 115 }
 116
 117 static void moxart_mac_setup_desc_ring(struct net_device *ndev)
 118 {
 119         struct moxart_mac_priv_t *priv = netdev_priv(ndev);
 120         void *desc;
 121         int i;
 122
 123         for (i = 0; i < TX_DESC_NUM; i++) {
 124                 desc = priv->tx_desc_base + i * TX_REG_DESC_SIZE;
 125                 memset(desc, 0, TX_REG_DESC_SIZE);
 126
 127                 priv->tx_buf[i] = priv->tx_buf_base + priv->tx_buf_size * i;
 128         }
 129         moxart_desc_write(TX_DESC1_END, desc + TX_REG_OFFSET_DESC1);
 130
 131         priv->tx_head = 0;
 132         priv->tx_tail = 0;
 133
 134         for (i = 0; i < RX_DESC_NUM; i++) {
 135                 desc = priv->rx_desc_base + i * RX_REG_DESC_SIZE;
 136                 memset(desc, 0, RX_REG_DESC_SIZE);
 137                 moxart_desc_write(RX_DESC0_DMA_OWN, desc + RX_REG_OFFSET_DESC0);
 138                 moxart_desc_write(RX_BUF_SIZE & RX_DESC1_BUF_SIZE_MASK,
 139                        desc + RX_REG_OFFSET_DESC1);
 140
 141                 priv->rx_buf[i] = priv->rx_buf_base + priv->rx_buf_size * i;
 142                 priv->rx_mapping[i] = dma_map_single(&priv->pdev->dev,
 143                                                      priv->rx_buf[i],
 144                                                      priv->rx_buf_size,
 145                                                      DMA_FROM_DEVICE);
 146                 if (dma_mapping_error(&priv->pdev->dev, priv->rx_mapping[i]))
 147                         netdev_err(ndev, "DMA mapping error\n");
 148
 149                 moxart_desc_write(priv->rx_mapping[i],
 150                        desc + RX_REG_OFFSET_DESC2 + RX_DESC2_ADDRESS_PHYS);
 151                 moxart_desc_write((uintptr_t)priv->rx_buf[i],
 152                        desc + RX_REG_OFFSET_DESC2 + RX_DESC2_ADDRESS_VIRT);
 153         }
 154         moxart_desc_write(RX_DESC1_END, desc + RX_REG_OFFSET_DESC1);
 155
 156         priv->rx_head = 0;
 157
 158         /* reset the MAC controller TX/RX descriptor base address */
 159         writel(priv->tx_base, priv->base + REG_TXR_BASE_ADDRESS);
 160         writel(priv->rx_base, priv->base + REG_RXR_BASE_ADDRESS);
 161 }
 162
 163 static int moxart_mac_open(struct net_device *ndev)
 164 {
 165         struct moxart_mac_priv_t *priv = netdev_priv(ndev);
 166
 167         napi_enable(&priv->napi);
 168
 169         moxart_mac_reset(ndev);
 170         moxart_update_mac_address(ndev);
 171         moxart_mac_setup_desc_ring(ndev);
 172         moxart_mac_enable(ndev);
 173         netif_start_queue(ndev);
 174
 175         netdev_dbg(ndev, "%s: IMR=0x%x, MACCR=0x%x\n",
 176                    __func__, readl(priv->base + REG_INTERRUPT_MASK),
 177                    readl(priv->base + REG_MAC_CTRL));
 178
 179         return 0;
 180 }
 181
 182 static int moxart_mac_stop(struct net_device *ndev)
 183 {
 184         struct moxart_mac_priv_t *priv = netdev_priv(ndev);
 185         int i;
 186
 187         napi_disable(&priv->napi);
 188
 189         netif_stop_queue(ndev);
 190
 191         /* disable all interrupts */
 192         writel(0, priv->base + REG_INTERRUPT_MASK);
 193
 194         /* disable all functions */
 195         writel(0, priv->base + REG_MAC_CTRL);
 196
 197         /* unmap areas mapped in moxart_mac_setup_desc_ring() */
 198         for (i = 0; i < RX_DESC_NUM; i++)
 199                 dma_unmap_single(&priv->pdev->dev, priv->rx_mapping[i],
 200                                  priv->rx_buf_size, DMA_FROM_DEVICE);
 201
 202         return 0;
 203 }
 204
 205 static int moxart_rx_poll(struct napi_struct *napi, int budget)
 206 {
 207         struct moxart_mac_priv_t *priv = container_of(napi,
 208                                                       struct moxart_mac_priv_t,
 209                                                       napi);
 210         struct net_device *ndev = priv->ndev;
 211         struct sk_buff *skb;
 212         void *desc;
 213         unsigned int desc0, len;
 214         int rx_head = priv->rx_head;
 215         int rx = 0;
 216
 217         while (rx < budget) {
 218                 desc = priv->rx_desc_base + (RX_REG_DESC_SIZE * rx_head);
 219                 desc0 = moxart_desc_read(desc + RX_REG_OFFSET_DESC0);
 220                 rmb(); /* ensure desc0 is up to date */
 221
 222                 if (desc0 & RX_DESC0_DMA_OWN)
 223                         break;
 224
 225                 if (desc0 & (RX_DESC0_ERR | RX_DESC0_CRC_ERR | RX_DESC0_FTL |
 226                              RX_DESC0_RUNT | RX_DESC0_ODD_NB)) {
 227                         net_dbg_ratelimited("packet error\n");
 228                         ndev->stats.rx_dropped++;
 229                         ndev->stats.rx_errors++;
 230                         goto rx_next;
 231                 }
 232
 233                 len = desc0 & RX_DESC0_FRAME_LEN_MASK;
 234
 235                 if (len > RX_BUF_SIZE)
 236                         len = RX_BUF_SIZE;
 237
 238                 dma_sync_single_for_cpu(&priv->pdev->dev,
 239                                         priv->rx_mapping[rx_head],
 240                                         priv->rx_buf_size, DMA_FROM_DEVICE);
 241                 skb = netdev_alloc_skb_ip_align(ndev, len);
 242
 243                 if (unlikely(!skb)) {
 244                         net_dbg_ratelimited("netdev_alloc_skb_ip_align failed\n");
 245                         ndev->stats.rx_dropped++;
 246                         ndev->stats.rx_errors++;
 247                         goto rx_next;
 248                 }
 249
 250                 memcpy(skb->data, priv->rx_buf[rx_head], len);
 251                 skb_put(skb, len);
 252                 skb->protocol = eth_type_trans(skb, ndev);
 253                 napi_gro_receive(&priv->napi, skb);
 254                 rx++;
 255
 256                 ndev->stats.rx_packets++;
 257                 ndev->stats.rx_bytes += len;
 258                 if (desc0 & RX_DESC0_MULTICAST)
 259                         ndev->stats.multicast++;
 260
 261 rx_next:
 262                 wmb(); /* prevent setting ownership back too early */
 263                 moxart_desc_write(RX_DESC0_DMA_OWN, desc + RX_REG_OFFSET_DESC0);
 264
 265                 rx_head = RX_NEXT(rx_head);
 266                 priv->rx_head = rx_head;
 267         }
 268
 269         if (rx < budget)
 270                 napi_complete_done(napi, rx);
 271
 272         priv->reg_imr |= RPKT_FINISH_M;
 273         writel(priv->reg_imr, priv->base + REG_INTERRUPT_MASK);
 274
 275         return rx;
 276 }
 277
 278 static int moxart_tx_queue_space(struct net_device *ndev)
 279 {
 280         struct moxart_mac_priv_t *priv = netdev_priv(ndev);
 281
 282         return CIRC_SPACE(priv->tx_head, priv->tx_tail, TX_DESC_NUM);
 283 }
 284
 285 static void moxart_tx_finished(struct net_device *ndev)
 286 {
 287         struct moxart_mac_priv_t *priv = netdev_priv(ndev);
 288         unsigned int tx_head = priv->tx_head;
 289         unsigned int tx_tail = priv->tx_tail;
 290
 291         while (tx_tail != tx_head) {
 292                 dma_unmap_single(&priv->pdev->dev, priv->tx_mapping[tx_tail],
 293                                  priv->tx_len[tx_tail], DMA_TO_DEVICE);
 294
 295                 ndev->stats.tx_packets++;
 296                 ndev->stats.tx_bytes += priv->tx_skb[tx_tail]->len;
 297
 298                 dev_consume_skb_irq(priv->tx_skb[tx_tail]);
 299                 priv->tx_skb[tx_tail] = NULL;
 300
 301                 tx_tail = TX_NEXT(tx_tail);
 302         }
 303         priv->tx_tail = tx_tail;
 304         if (netif_queue_stopped(ndev) &&
 305             moxart_tx_queue_space(ndev) >= TX_WAKE_THRESHOLD)
 306                 netif_wake_queue(ndev);
 307 }
 308
 309 static irqreturn_t moxart_mac_interrupt(int irq, void *dev_id)
 310 {
 311         struct net_device *ndev = (struct net_device *)dev_id;
 312         struct moxart_mac_priv_t *priv = netdev_priv(ndev);
 313         unsigned int ists = readl(priv->base + REG_INTERRUPT_STATUS);
 314
 315         if (ists & XPKT_OK_INT_STS)
 316                 moxart_tx_finished(ndev);
 317
 318         if (ists & RPKT_FINISH) {
 319                 if (napi_schedule_prep(&priv->napi)) {
 320                         priv->reg_imr &= ~RPKT_FINISH_M;
 321                         writel(priv->reg_imr, priv->base + REG_INTERRUPT_MASK);
 322                         __napi_schedule(&priv->napi);
 323                 }
 324         }
 325
 326         return IRQ_HANDLED;
 327 }
 328
 329 static netdev_tx_t moxart_mac_start_xmit(struct sk_buff *skb,
 330                                          struct net_device *ndev)
 331 {
 332         struct moxart_mac_priv_t *priv = netdev_priv(ndev);
 333         void *desc;
 334         unsigned int len;
 335         unsigned int tx_head;
 336         u32 txdes1;
 337         netdev_tx_t ret = NETDEV_TX_BUSY;
 338
 339         spin_lock_irq(&priv->txlock);
 340
 341         tx_head = priv->tx_head;
 342         desc = priv->tx_desc_base + (TX_REG_DESC_SIZE * tx_head);
 343
 344         if (moxart_tx_queue_space(ndev) == 1)
 345                 netif_stop_queue(ndev);
 346
 347         if (moxart_desc_read(desc + TX_REG_OFFSET_DESC0) & TX_DESC0_DMA_OWN) {
 348                 net_dbg_ratelimited("no TX space for packet\n");
 349                 ndev->stats.tx_dropped++;
 350                 goto out_unlock;
 351         }
 352         rmb(); /* ensure data is only read that had TX_DESC0_DMA_OWN cleared */
 353
 354         len = skb->len > TX_BUF_SIZE ? TX_BUF_SIZE : skb->len;
 355
 356         priv->tx_mapping[tx_head] = dma_map_single(&priv->pdev->dev, skb->data,
 357                                                    len, DMA_TO_DEVICE);
 358         if (dma_mapping_error(&priv->pdev->dev, priv->tx_mapping[tx_head])) {
 359                 netdev_err(ndev, "DMA mapping error\n");
 360                 goto out_unlock;
 361         }
 362
 363         priv->tx_len[tx_head] = len;
 364         priv->tx_skb[tx_head] = skb;
 365
 366         moxart_desc_write(priv->tx_mapping[tx_head],
 367                desc + TX_REG_OFFSET_DESC2 + TX_DESC2_ADDRESS_PHYS);
 368         moxart_desc_write((uintptr_t)skb->data,
 369                desc + TX_REG_OFFSET_DESC2 + TX_DESC2_ADDRESS_VIRT);
 370
 371         if (skb->len < ETH_ZLEN) {
 372                 memset(&skb->data[skb->len],
 373                        0, ETH_ZLEN - skb->len);
 374                 len = ETH_ZLEN;
 375         }
 376
 377         dma_sync_single_for_device(&priv->pdev->dev, priv->tx_mapping[tx_head],
 378                                    priv->tx_buf_size, DMA_TO_DEVICE);
 379
 380         txdes1 = TX_DESC1_LTS | TX_DESC1_FTS | (len & TX_DESC1_BUF_SIZE_MASK);
 381         if (tx_head == TX_DESC_NUM_MASK)
 382                 txdes1 |= TX_DESC1_END;
 383         moxart_desc_write(txdes1, desc + TX_REG_OFFSET_DESC1);
 384         wmb(); /* flush descriptor before transferring ownership */
 385         moxart_desc_write(TX_DESC0_DMA_OWN, desc + TX_REG_OFFSET_DESC0);
 386
 387         /* start to send packet */
 388         writel(0xffffffff, priv->base + REG_TX_POLL_DEMAND);
 389
 390         priv->tx_head = TX_NEXT(tx_head);
 391
 392         netif_trans_update(ndev);
 393         ret = NETDEV_TX_OK;
 394 out_unlock:
 395         spin_unlock_irq(&priv->txlock);
 396
 397         return ret;
 398 }
 399
 400 static void moxart_mac_setmulticast(struct net_device *ndev)
 401 {
 402         struct moxart_mac_priv_t *priv = netdev_priv(ndev);
 403         struct netdev_hw_addr *ha;
 404         int crc_val;
 405
 406         netdev_for_each_mc_addr(ha, ndev) {
 407                 crc_val = crc32_le(~0, ha->addr, ETH_ALEN);
 408                 crc_val = (crc_val >> 26) & 0x3f;
 409                 if (crc_val >= 32) {
 410                         writel(readl(priv->base + REG_MCAST_HASH_TABLE1) |
 411                                (1UL << (crc_val - 32)),
 412                                priv->base + REG_MCAST_HASH_TABLE1);
 413                 } else {
 414                         writel(readl(priv->base + REG_MCAST_HASH_TABLE0) |
 415                                (1UL << crc_val),
 416                                priv->base + REG_MCAST_HASH_TABLE0);
 417                 }
 418         }
 419 }
 420
 421 static void moxart_mac_set_rx_mode(struct net_device *ndev)
 422 {
 423         struct moxart_mac_priv_t *priv = netdev_priv(ndev);
 424
 425         spin_lock_irq(&priv->txlock);
 426
 427         (ndev->flags & IFF_PROMISC) ? (priv->reg_maccr |= RCV_ALL) :
 428                                       (priv->reg_maccr &= ~RCV_ALL);
 429
 430         (ndev->flags & IFF_ALLMULTI) ? (priv->reg_maccr |= RX_MULTIPKT) :
 431                                        (priv->reg_maccr &= ~RX_MULTIPKT);
 432
 433         if ((ndev->flags & IFF_MULTICAST) && netdev_mc_count(ndev)) {
 434                 priv->reg_maccr |= HT_MULTI_EN;
 435                 moxart_mac_setmulticast(ndev);
 436         } else {
 437                 priv->reg_maccr &= ~HT_MULTI_EN;
 438         }
 439
 440         writel(priv->reg_maccr, priv->base + REG_MAC_CTRL);
 441
 442         spin_unlock_irq(&priv->txlock);
 443 }
 444
 445 static const struct net_device_ops moxart_netdev_ops = {
 446         .ndo_open               = moxart_mac_open,
 447         .ndo_stop               = moxart_mac_stop,
 448         .ndo_start_xmit         = moxart_mac_start_xmit,
 449         .ndo_set_rx_mode        = moxart_mac_set_rx_mode,
 450         .ndo_set_mac_address    = moxart_set_mac_address,
 451         .ndo_validate_addr      = eth_validate_addr,
 452 };
 453
 454 static int moxart_mac_probe(struct platform_device *pdev)
 455 {
 456         struct device *p_dev = &pdev->dev;
 457         struct device_node *node = p_dev->of_node;
 458         struct net_device *ndev;
 459         struct moxart_mac_priv_t *priv;
 460         struct resource *res;
 461         unsigned int irq;
 462         int ret;
 463
 464         ndev = alloc_etherdev(sizeof(struct moxart_mac_priv_t));
 465         if (!ndev)
 466                 return -ENOMEM;
 467
 468         irq = irq_of_parse_and_map(node, 0);
 469         if (irq <= 0) {
 470                 netdev_err(ndev, "irq_of_parse_and_map failed\n");
 471                 ret = -EINVAL;
 472                 goto irq_map_fail;
 473         }
 474
 475         priv = netdev_priv(ndev);
 476         priv->ndev = ndev;
 477         priv->pdev = pdev;
 478
 479         priv->base = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
 480         if (IS_ERR(priv->base)) {
 481                 ret = PTR_ERR(priv->base);
 482                 goto init_fail;
 483         }
 484         ndev->base_addr = res->start;
 485
 486         ret = platform_get_ethdev_address(p_dev, ndev);
 487         if (ret == -EPROBE_DEFER)
 488                 goto init_fail;
 489         if (ret)
 490                 eth_hw_addr_random(ndev);
 491         moxart_update_mac_address(ndev);
 492
 493         spin_lock_init(&priv->txlock);
 494
 495         priv->tx_buf_size = TX_BUF_SIZE;
 496         priv->rx_buf_size = RX_BUF_SIZE;
 497
 498         priv->tx_desc_base = dma_alloc_coherent(p_dev, TX_REG_DESC_SIZE *
 499                                                 TX_DESC_NUM, &priv->tx_base,
 500                                                 GFP_DMA | GFP_KERNEL);
 501         if (!priv->tx_desc_base) {
 502                 ret = -ENOMEM;
 503                 goto init_fail;
 504         }
 505
 506         priv->rx_desc_base = dma_alloc_coherent(p_dev, RX_REG_DESC_SIZE *
 507                                                 RX_DESC_NUM, &priv->rx_base,
 508                                                 GFP_DMA | GFP_KERNEL);
 509         if (!priv->rx_desc_base) {
 510                 ret = -ENOMEM;
 511                 goto init_fail;
 512         }
 513
 514         priv->tx_buf_base = kmalloc_array(priv->tx_buf_size, TX_DESC_NUM,
 515                                           GFP_KERNEL);
 516         if (!priv->tx_buf_base) {
 517                 ret = -ENOMEM;
 518                 goto init_fail;
 519         }
 520
 521         priv->rx_buf_base = kmalloc_array(priv->rx_buf_size, RX_DESC_NUM,
 522                                           GFP_KERNEL);
 523         if (!priv->rx_buf_base) {
 524                 ret = -ENOMEM;
 525                 goto init_fail;
 526         }
 527
 528         platform_set_drvdata(pdev, ndev);
 529
 530         ret = devm_request_irq(p_dev, irq, moxart_mac_interrupt, 0,
 531                                pdev->name, ndev);
 532         if (ret) {
 533                 netdev_err(ndev, "devm_request_irq failed\n");
 534                 goto init_fail;
 535         }
 536
 537         ndev->netdev_ops = &moxart_netdev_ops;
 538         netif_napi_add_weight(ndev, &priv->napi, moxart_rx_poll, RX_DESC_NUM);
 539         ndev->priv_flags |= IFF_UNICAST_FLT;
 540         ndev->irq = irq;
 541
 542         SET_NETDEV_DEV(ndev, &pdev->dev);
 543
 544         ret = register_netdev(ndev);
 545         if (ret)
 546                 goto init_fail;
 547
 548         netdev_dbg(ndev, "%s: IRQ=%d address=%pM\n",
 549                    __func__, ndev->irq, ndev->dev_addr);
 550
 551         return 0;
 552
 553 init_fail:
 554         netdev_err(ndev, "init failed\n");
 555         moxart_mac_free_memory(ndev);
 556 irq_map_fail:
 557         free_netdev(ndev);
 558         return ret;
 559 }
 560
 561 static void moxart_remove(struct platform_device *pdev)
 562 {
 563         struct net_device *ndev = platform_get_drvdata(pdev);
 564
 565         unregister_netdev(ndev);
 566         devm_free_irq(&pdev->dev, ndev->irq, ndev);
 567         moxart_mac_free_memory(ndev);
 568         free_netdev(ndev);
 569 }
 570
 571 static const struct of_device_id moxart_mac_match[] = {
 572         { .compatible = "moxa,moxart-mac" },
 573         { }
 574 };
 575 MODULE_DEVICE_TABLE(of, moxart_mac_match);
 576
 577 static struct platform_driver moxart_mac_driver = {
 578         .probe  = moxart_mac_probe,
 579         .remove = moxart_remove,
 580         .driver = {
 581                 .name           = "moxart-ethernet",
 582                 .of_match_table = moxart_mac_match,
 583         },
 584 };
 585 module_platform_driver(moxart_mac_driver);
 586
 587 MODULE_DESCRIPTION("MOXART RTL8201CP Ethernet driver");
 588 MODULE_LICENSE("GPL v2");
 589 MODULE_AUTHOR("Jonas Jensen <jonas.jensen@gmail.com>");