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