git.oblomov.eu Git - linux-2.6/blob - drivers/net/fec_mpc52xx.c

   1 /*
   2  * Driver for the MPC5200 Fast Ethernet Controller
   3  *
   4  * Originally written by Dale Farnsworth <dfarnsworth@mvista.com> and
   5  * now maintained by Sylvain Munaut <tnt@246tNt.com>
   6  *
   7  * Copyright (C) 2007  Domen Puncer, Telargo, Inc.
   8  * Copyright (C) 2007  Sylvain Munaut <tnt@246tNt.com>
   9  * Copyright (C) 2003-2004  MontaVista, Software, Inc.
  10  *
  11  * This file is licensed under the terms of the GNU General Public License
  12  * version 2. This program is licensed "as is" without any warranty of any
  13  * kind, whether express or implied.
  14  *
  15  */
  16
  17 #include <linux/module.h>
  18
  19 #include <linux/kernel.h>
  20 #include <linux/types.h>
  21 #include <linux/spinlock.h>
  22 #include <linux/errno.h>
  23 #include <linux/init.h>
  24 #include <linux/crc32.h>
  25 #include <linux/hardirq.h>
  26 #include <linux/delay.h>
  27 #include <linux/of_device.h>
  28 #include <linux/of_platform.h>
  29
  30 #include <linux/netdevice.h>
  31 #include <linux/etherdevice.h>
  32 #include <linux/ethtool.h>
  33 #include <linux/skbuff.h>
  34
  35 #include <asm/io.h>
  36 #include <asm/delay.h>
  37 #include <asm/mpc52xx.h>
  38
  39 #include <sysdev/bestcomm/bestcomm.h>
  40 #include <sysdev/bestcomm/fec.h>
  41
  42 #include "fec_mpc52xx.h"
  43
  44 #define DRIVER_NAME "mpc52xx-fec"
  45
  46 #define FEC5200_PHYADDR_NONE    (-1)
  47 #define FEC5200_PHYADDR_7WIRE   (-2)
  48
  49 /* Private driver data structure */
  50 struct mpc52xx_fec_priv {
  51         int duplex;
  52         int speed;
  53         int r_irq;
  54         int t_irq;
  55         struct mpc52xx_fec __iomem *fec;
  56         struct bcom_task *rx_dmatsk;
  57         struct bcom_task *tx_dmatsk;
  58         spinlock_t lock;
  59         int msg_enable;
  60
  61         /* MDIO link details */
  62         int phy_addr;
  63         unsigned int phy_speed;
  64         struct phy_device *phydev;
  65         enum phy_state link;
  66 };
  67
  68
  69 static irqreturn_t mpc52xx_fec_interrupt(int, void *);
  70 static irqreturn_t mpc52xx_fec_rx_interrupt(int, void *);
  71 static irqreturn_t mpc52xx_fec_tx_interrupt(int, void *);
  72 static void mpc52xx_fec_stop(struct net_device *dev);
  73 static void mpc52xx_fec_start(struct net_device *dev);
  74 static void mpc52xx_fec_reset(struct net_device *dev);
  75
  76 static u8 mpc52xx_fec_mac_addr[6];
  77 module_param_array_named(mac, mpc52xx_fec_mac_addr, byte, NULL, 0);
  78 MODULE_PARM_DESC(mac, "six hex digits, ie. 0x1,0x2,0xc0,0x01,0xba,0xbe");
  79
  80 #define MPC52xx_MESSAGES_DEFAULT ( NETIF_MSG_DRV | NETIF_MSG_PROBE | \
  81                 NETIF_MSG_LINK | NETIF_MSG_IFDOWN | NETIF_MSG_IFUP)
  82 static int debug = -1;  /* the above default */
  83 module_param(debug, int, 0);
  84 MODULE_PARM_DESC(debug, "debugging messages level");
  85
  86 static void mpc52xx_fec_tx_timeout(struct net_device *dev)
  87 {
  88         dev_warn(&dev->dev, "transmit timed out\n");
  89
  90         mpc52xx_fec_reset(dev);
  91
  92         dev->stats.tx_errors++;
  93
  94         netif_wake_queue(dev);
  95 }
  96
  97 static void mpc52xx_fec_set_paddr(struct net_device *dev, u8 *mac)
  98 {
  99         struct mpc52xx_fec_priv *priv = netdev_priv(dev);
 100         struct mpc52xx_fec __iomem *fec = priv->fec;
 101
 102         out_be32(&fec->paddr1, *(u32 *)(&mac[0]));
 103         out_be32(&fec->paddr2, (*(u16 *)(&mac[4]) << 16) | FEC_PADDR2_TYPE);
 104 }
 105
 106 static void mpc52xx_fec_get_paddr(struct net_device *dev, u8 *mac)
 107 {
 108         struct mpc52xx_fec_priv *priv = netdev_priv(dev);
 109         struct mpc52xx_fec __iomem *fec = priv->fec;
 110
 111         *(u32 *)(&mac[0]) = in_be32(&fec->paddr1);
 112         *(u16 *)(&mac[4]) = in_be32(&fec->paddr2) >> 16;
 113 }
 114
 115 static int mpc52xx_fec_set_mac_address(struct net_device *dev, void *addr)
 116 {
 117         struct sockaddr *sock = addr;
 118
 119         memcpy(dev->dev_addr, sock->sa_data, dev->addr_len);
 120
 121         mpc52xx_fec_set_paddr(dev, sock->sa_data);
 122         return 0;
 123 }
 124
 125 static void mpc52xx_fec_free_rx_buffers(struct net_device *dev, struct bcom_task *s)
 126 {
 127         while (!bcom_queue_empty(s)) {
 128                 struct bcom_fec_bd *bd;
 129                 struct sk_buff *skb;
 130
 131                 skb = bcom_retrieve_buffer(s, NULL, (struct bcom_bd **)&bd);
 132                 dma_unmap_single(dev->dev.parent, bd->skb_pa, skb->len,
 133                                  DMA_FROM_DEVICE);
 134                 kfree_skb(skb);
 135         }
 136 }
 137
 138 static int mpc52xx_fec_alloc_rx_buffers(struct net_device *dev, struct bcom_task *rxtsk)
 139 {
 140         while (!bcom_queue_full(rxtsk)) {
 141                 struct sk_buff *skb;
 142                 struct bcom_fec_bd *bd;
 143
 144                 skb = dev_alloc_skb(FEC_RX_BUFFER_SIZE);
 145                 if (skb == NULL)
 146                         return -EAGAIN;
 147
 148                 /* zero out the initial receive buffers to aid debugging */
 149                 memset(skb->data, 0, FEC_RX_BUFFER_SIZE);
 150
 151                 bd = (struct bcom_fec_bd *)bcom_prepare_next_buffer(rxtsk);
 152
 153                 bd->status = FEC_RX_BUFFER_SIZE;
 154                 bd->skb_pa = dma_map_single(dev->dev.parent, skb->data,
 155                                 FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
 156
 157                 bcom_submit_next_buffer(rxtsk, skb);
 158         }
 159
 160         return 0;
 161 }
 162
 163 /* based on generic_adjust_link from fs_enet-main.c */
 164 static void mpc52xx_fec_adjust_link(struct net_device *dev)
 165 {
 166         struct mpc52xx_fec_priv *priv = netdev_priv(dev);
 167         struct phy_device *phydev = priv->phydev;
 168         int new_state = 0;
 169
 170         if (phydev->link != PHY_DOWN) {
 171                 if (phydev->duplex != priv->duplex) {
 172                         struct mpc52xx_fec __iomem *fec = priv->fec;
 173                         u32 rcntrl;
 174                         u32 tcntrl;
 175
 176                         new_state = 1;
 177                         priv->duplex = phydev->duplex;
 178
 179                         rcntrl = in_be32(&fec->r_cntrl);
 180                         tcntrl = in_be32(&fec->x_cntrl);
 181
 182                         rcntrl &= ~FEC_RCNTRL_DRT;
 183                         tcntrl &= ~FEC_TCNTRL_FDEN;
 184                         if (phydev->duplex == DUPLEX_FULL)
 185                                 tcntrl |= FEC_TCNTRL_FDEN;      /* FD enable */
 186                         else
 187                                 rcntrl |= FEC_RCNTRL_DRT;       /* disable Rx on Tx (HD) */
 188
 189                         out_be32(&fec->r_cntrl, rcntrl);
 190                         out_be32(&fec->x_cntrl, tcntrl);
 191                 }
 192
 193                 if (phydev->speed != priv->speed) {
 194                         new_state = 1;
 195                         priv->speed = phydev->speed;
 196                 }
 197
 198                 if (priv->link == PHY_DOWN) {
 199                         new_state = 1;
 200                         priv->link = phydev->link;
 201                 }
 202
 203         } else if (priv->link) {
 204                 new_state = 1;
 205                 priv->link = PHY_DOWN;
 206                 priv->speed = 0;
 207                 priv->duplex = -1;
 208         }
 209
 210         if (new_state && netif_msg_link(priv))
 211                 phy_print_status(phydev);
 212 }
 213
 214 static int mpc52xx_fec_init_phy(struct net_device *dev)
 215 {
 216         struct mpc52xx_fec_priv *priv = netdev_priv(dev);
 217         struct phy_device *phydev;
 218         char phy_id[BUS_ID_SIZE];
 219
 220         snprintf(phy_id, sizeof(phy_id), "%x:%02x",
 221                         (unsigned int)dev->base_addr, priv->phy_addr);
 222
 223         priv->link = PHY_DOWN;
 224         priv->speed = 0;
 225         priv->duplex = -1;
 226
 227         phydev = phy_connect(dev, phy_id, &mpc52xx_fec_adjust_link, 0, PHY_INTERFACE_MODE_MII);
 228         if (IS_ERR(phydev)) {
 229                 dev_err(&dev->dev, "phy_connect failed\n");
 230                 return PTR_ERR(phydev);
 231         }
 232         dev_info(&dev->dev, "attached phy %i to driver %s\n",
 233                         phydev->addr, phydev->drv->name);
 234
 235         priv->phydev = phydev;
 236
 237         return 0;
 238 }
 239
 240 static int mpc52xx_fec_phy_start(struct net_device *dev)
 241 {
 242         struct mpc52xx_fec_priv *priv = netdev_priv(dev);
 243         int err;
 244
 245         if (priv->phy_addr < 0)
 246                 return 0;
 247
 248         err = mpc52xx_fec_init_phy(dev);
 249         if (err) {
 250                 dev_err(&dev->dev, "mpc52xx_fec_init_phy failed\n");
 251                 return err;
 252         }
 253
 254         /* reset phy - this also wakes it from PDOWN */
 255         phy_write(priv->phydev, MII_BMCR, BMCR_RESET);
 256         phy_start(priv->phydev);
 257
 258         return 0;
 259 }
 260
 261 static void mpc52xx_fec_phy_stop(struct net_device *dev)
 262 {
 263         struct mpc52xx_fec_priv *priv = netdev_priv(dev);
 264
 265         if (!priv->phydev)
 266                 return;
 267
 268         phy_disconnect(priv->phydev);
 269         /* power down phy */
 270         phy_stop(priv->phydev);
 271         phy_write(priv->phydev, MII_BMCR, BMCR_PDOWN);
 272 }
 273
 274 static void mpc52xx_fec_phy_hw_init(struct mpc52xx_fec_priv *priv)
 275 {
 276         struct mpc52xx_fec __iomem *fec = priv->fec;
 277
 278         if (priv->phydev)
 279                 return;
 280
 281         out_be32(&fec->mii_speed, priv->phy_speed);
 282 }
 283
 284 static int mpc52xx_fec_open(struct net_device *dev)
 285 {
 286         struct mpc52xx_fec_priv *priv = netdev_priv(dev);
 287         int err = -EBUSY;
 288
 289         if (request_irq(dev->irq, &mpc52xx_fec_interrupt, IRQF_SHARED,
 290                         DRIVER_NAME "_ctrl", dev)) {
 291                 dev_err(&dev->dev, "ctrl interrupt request failed\n");
 292                 goto out;
 293         }
 294         if (request_irq(priv->r_irq, &mpc52xx_fec_rx_interrupt, 0,
 295                         DRIVER_NAME "_rx", dev)) {
 296                 dev_err(&dev->dev, "rx interrupt request failed\n");
 297                 goto free_ctrl_irq;
 298         }
 299         if (request_irq(priv->t_irq, &mpc52xx_fec_tx_interrupt, 0,
 300                         DRIVER_NAME "_tx", dev)) {
 301                 dev_err(&dev->dev, "tx interrupt request failed\n");
 302                 goto free_2irqs;
 303         }
 304
 305         bcom_fec_rx_reset(priv->rx_dmatsk);
 306         bcom_fec_tx_reset(priv->tx_dmatsk);
 307
 308         err = mpc52xx_fec_alloc_rx_buffers(dev, priv->rx_dmatsk);
 309         if (err) {
 310                 dev_err(&dev->dev, "mpc52xx_fec_alloc_rx_buffers failed\n");
 311                 goto free_irqs;
 312         }
 313
 314         err = mpc52xx_fec_phy_start(dev);
 315         if (err)
 316                 goto free_skbs;
 317
 318         bcom_enable(priv->rx_dmatsk);
 319         bcom_enable(priv->tx_dmatsk);
 320
 321         mpc52xx_fec_start(dev);
 322
 323         netif_start_queue(dev);
 324
 325         return 0;
 326
 327  free_skbs:
 328         mpc52xx_fec_free_rx_buffers(dev, priv->rx_dmatsk);
 329
 330  free_irqs:
 331         free_irq(priv->t_irq, dev);
 332  free_2irqs:
 333         free_irq(priv->r_irq, dev);
 334  free_ctrl_irq:
 335         free_irq(dev->irq, dev);
 336  out:
 337
 338         return err;
 339 }
 340
 341 static int mpc52xx_fec_close(struct net_device *dev)
 342 {
 343         struct mpc52xx_fec_priv *priv = netdev_priv(dev);
 344
 345         netif_stop_queue(dev);
 346
 347         mpc52xx_fec_stop(dev);
 348
 349         mpc52xx_fec_free_rx_buffers(dev, priv->rx_dmatsk);
 350
 351         free_irq(dev->irq, dev);
 352         free_irq(priv->r_irq, dev);
 353         free_irq(priv->t_irq, dev);
 354
 355         mpc52xx_fec_phy_stop(dev);
 356
 357         return 0;
 358 }
 359
 360 /* This will only be invoked if your driver is _not_ in XOFF state.
 361  * What this means is that you need not check it, and that this
 362  * invariant will hold if you make sure that the netif_*_queue()
 363  * calls are done at the proper times.
 364  */
 365 static int mpc52xx_fec_start_xmit(struct sk_buff *skb, struct net_device *dev)
 366 {
 367         struct mpc52xx_fec_priv *priv = netdev_priv(dev);
 368         struct bcom_fec_bd *bd;
 369
 370         if (bcom_queue_full(priv->tx_dmatsk)) {
 371                 if (net_ratelimit())
 372                         dev_err(&dev->dev, "transmit queue overrun\n");
 373                 return NETDEV_TX_BUSY;
 374         }
 375
 376         spin_lock_irq(&priv->lock);
 377         dev->trans_start = jiffies;
 378
 379         bd = (struct bcom_fec_bd *)
 380                 bcom_prepare_next_buffer(priv->tx_dmatsk);
 381
 382         bd->status = skb->len | BCOM_FEC_TX_BD_TFD | BCOM_FEC_TX_BD_TC;
 383         bd->skb_pa = dma_map_single(dev->dev.parent, skb->data, skb->len,
 384                                     DMA_TO_DEVICE);
 385
 386         bcom_submit_next_buffer(priv->tx_dmatsk, skb);
 387
 388         if (bcom_queue_full(priv->tx_dmatsk)) {
 389                 netif_stop_queue(dev);
 390         }
 391
 392         spin_unlock_irq(&priv->lock);
 393
 394         return NETDEV_TX_OK;
 395 }
 396
 397 #ifdef CONFIG_NET_POLL_CONTROLLER
 398 static void mpc52xx_fec_poll_controller(struct net_device *dev)
 399 {
 400         struct mpc52xx_fec_priv *priv = netdev_priv(dev);
 401
 402         disable_irq(priv->t_irq);
 403         mpc52xx_fec_tx_interrupt(priv->t_irq, dev);
 404         enable_irq(priv->t_irq);
 405         disable_irq(priv->r_irq);
 406         mpc52xx_fec_rx_interrupt(priv->r_irq, dev);
 407         enable_irq(priv->r_irq);
 408 }
 409 #endif
 410
 411
 412 /* This handles BestComm transmit task interrupts
 413  */
 414 static irqreturn_t mpc52xx_fec_tx_interrupt(int irq, void *dev_id)
 415 {
 416         struct net_device *dev = dev_id;
 417         struct mpc52xx_fec_priv *priv = netdev_priv(dev);
 418
 419         spin_lock(&priv->lock);
 420
 421         while (bcom_buffer_done(priv->tx_dmatsk)) {
 422                 struct sk_buff *skb;
 423                 struct bcom_fec_bd *bd;
 424                 skb = bcom_retrieve_buffer(priv->tx_dmatsk, NULL,
 425                                 (struct bcom_bd **)&bd);
 426                 dma_unmap_single(dev->dev.parent, bd->skb_pa, skb->len,
 427                                  DMA_TO_DEVICE);
 428
 429                 dev_kfree_skb_irq(skb);
 430         }
 431
 432         netif_wake_queue(dev);
 433
 434         spin_unlock(&priv->lock);
 435
 436         return IRQ_HANDLED;
 437 }
 438
 439 static irqreturn_t mpc52xx_fec_rx_interrupt(int irq, void *dev_id)
 440 {
 441         struct net_device *dev = dev_id;
 442         struct mpc52xx_fec_priv *priv = netdev_priv(dev);
 443
 444         while (bcom_buffer_done(priv->rx_dmatsk)) {
 445                 struct sk_buff *skb;
 446                 struct sk_buff *rskb;
 447                 struct bcom_fec_bd *bd;
 448                 u32 status;
 449
 450                 rskb = bcom_retrieve_buffer(priv->rx_dmatsk, &status,
 451                                 (struct bcom_bd **)&bd);
 452                 dma_unmap_single(dev->dev.parent, bd->skb_pa, rskb->len,
 453                                  DMA_FROM_DEVICE);
 454
 455                 /* Test for errors in received frame */
 456                 if (status & BCOM_FEC_RX_BD_ERRORS) {
 457                         /* Drop packet and reuse the buffer */
 458                         bd = (struct bcom_fec_bd *)
 459                                 bcom_prepare_next_buffer(priv->rx_dmatsk);
 460
 461                         bd->status = FEC_RX_BUFFER_SIZE;
 462                         bd->skb_pa = dma_map_single(dev->dev.parent,
 463                                         rskb->data,
 464                                         FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
 465
 466                         bcom_submit_next_buffer(priv->rx_dmatsk, rskb);
 467
 468                         dev->stats.rx_dropped++;
 469
 470                         continue;
 471                 }
 472
 473                 /* skbs are allocated on open, so now we allocate a new one,
 474                  * and remove the old (with the packet) */
 475                 skb = dev_alloc_skb(FEC_RX_BUFFER_SIZE);
 476                 if (skb) {
 477                         /* Process the received skb */
 478                         int length = status & BCOM_FEC_RX_BD_LEN_MASK;
 479
 480                         skb_put(rskb, length - 4);      /* length without CRC32 */
 481
 482                         rskb->dev = dev;
 483                         rskb->protocol = eth_type_trans(rskb, dev);
 484
 485                         netif_rx(rskb);
 486                 } else {
 487                         /* Can't get a new one : reuse the same & drop pkt */
 488                         dev_notice(&dev->dev, "Memory squeeze, dropping packet.\n");
 489                         dev->stats.rx_dropped++;
 490
 491                         skb = rskb;
 492                 }
 493
 494                 bd = (struct bcom_fec_bd *)
 495                         bcom_prepare_next_buffer(priv->rx_dmatsk);
 496
 497                 bd->status = FEC_RX_BUFFER_SIZE;
 498                 bd->skb_pa = dma_map_single(dev->dev.parent, skb->data,
 499                                 FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
 500
 501                 bcom_submit_next_buffer(priv->rx_dmatsk, skb);
 502         }
 503
 504         return IRQ_HANDLED;
 505 }
 506
 507 static irqreturn_t mpc52xx_fec_interrupt(int irq, void *dev_id)
 508 {
 509         struct net_device *dev = dev_id;
 510         struct mpc52xx_fec_priv *priv = netdev_priv(dev);
 511         struct mpc52xx_fec __iomem *fec = priv->fec;
 512         u32 ievent;
 513
 514         ievent = in_be32(&fec->ievent);
 515
 516         ievent &= ~FEC_IEVENT_MII;      /* mii is handled separately */
 517         if (!ievent)
 518                 return IRQ_NONE;
 519
 520         out_be32(&fec->ievent, ievent);         /* clear pending events */
 521
 522         /* on fifo error, soft-reset fec */
 523         if (ievent & (FEC_IEVENT_RFIFO_ERROR | FEC_IEVENT_XFIFO_ERROR)) {
 524
 525                 if (net_ratelimit() && (ievent & FEC_IEVENT_RFIFO_ERROR))
 526                         dev_warn(&dev->dev, "FEC_IEVENT_RFIFO_ERROR\n");
 527                 if (net_ratelimit() && (ievent & FEC_IEVENT_XFIFO_ERROR))
 528                         dev_warn(&dev->dev, "FEC_IEVENT_XFIFO_ERROR\n");
 529
 530                 mpc52xx_fec_reset(dev);
 531
 532                 netif_wake_queue(dev);
 533                 return IRQ_HANDLED;
 534         }
 535
 536         if (ievent & ~FEC_IEVENT_TFINT)
 537                 dev_dbg(&dev->dev, "ievent: %08x\n", ievent);
 538
 539         return IRQ_HANDLED;
 540 }
 541
 542 /*
 543  * Get the current statistics.
 544  * This may be called with the card open or closed.
 545  */
 546 static struct net_device_stats *mpc52xx_fec_get_stats(struct net_device *dev)
 547 {
 548         struct mpc52xx_fec_priv *priv = netdev_priv(dev);
 549         struct net_device_stats *stats = &dev->stats;
 550         struct mpc52xx_fec __iomem *fec = priv->fec;
 551
 552         stats->rx_bytes = in_be32(&fec->rmon_r_octets);
 553         stats->rx_packets = in_be32(&fec->rmon_r_packets);
 554         stats->rx_errors = in_be32(&fec->rmon_r_crc_align) +
 555                 in_be32(&fec->rmon_r_undersize) +
 556                 in_be32(&fec->rmon_r_oversize) +
 557                 in_be32(&fec->rmon_r_frag) +
 558                 in_be32(&fec->rmon_r_jab);
 559
 560         stats->tx_bytes = in_be32(&fec->rmon_t_octets);
 561         stats->tx_packets = in_be32(&fec->rmon_t_packets);
 562         stats->tx_errors = in_be32(&fec->rmon_t_crc_align) +
 563                 in_be32(&fec->rmon_t_undersize) +
 564                 in_be32(&fec->rmon_t_oversize) +
 565                 in_be32(&fec->rmon_t_frag) +
 566                 in_be32(&fec->rmon_t_jab);
 567
 568         stats->multicast = in_be32(&fec->rmon_r_mc_pkt);
 569         stats->collisions = in_be32(&fec->rmon_t_col);
 570
 571         /* detailed rx_errors: */
 572         stats->rx_length_errors = in_be32(&fec->rmon_r_undersize)
 573                                         + in_be32(&fec->rmon_r_oversize)
 574                                         + in_be32(&fec->rmon_r_frag)
 575                                         + in_be32(&fec->rmon_r_jab);
 576         stats->rx_over_errors = in_be32(&fec->r_macerr);
 577         stats->rx_crc_errors = in_be32(&fec->ieee_r_crc);
 578         stats->rx_frame_errors = in_be32(&fec->ieee_r_align);
 579         stats->rx_fifo_errors = in_be32(&fec->rmon_r_drop);
 580         stats->rx_missed_errors = in_be32(&fec->rmon_r_drop);
 581
 582         /* detailed tx_errors: */
 583         stats->tx_aborted_errors = 0;
 584         stats->tx_carrier_errors = in_be32(&fec->ieee_t_cserr);
 585         stats->tx_fifo_errors = in_be32(&fec->rmon_t_drop);
 586         stats->tx_heartbeat_errors = in_be32(&fec->ieee_t_sqe);
 587         stats->tx_window_errors = in_be32(&fec->ieee_t_lcol);
 588
 589         return stats;
 590 }
 591
 592 /*
 593  * Read MIB counters in order to reset them,
 594  * then zero all the stats fields in memory
 595  */
 596 static void mpc52xx_fec_reset_stats(struct net_device *dev)
 597 {
 598         struct mpc52xx_fec_priv *priv = netdev_priv(dev);
 599         struct mpc52xx_fec __iomem *fec = priv->fec;
 600
 601         out_be32(&fec->mib_control, FEC_MIB_DISABLE);
 602         memset_io(&fec->rmon_t_drop, 0,
 603                    offsetof(struct mpc52xx_fec, reserved10) -
 604                    offsetof(struct mpc52xx_fec, rmon_t_drop));
 605         out_be32(&fec->mib_control, 0);
 606
 607         memset(&dev->stats, 0, sizeof(dev->stats));
 608 }
 609
 610 /*
 611  * Set or clear the multicast filter for this adaptor.
 612  */
 613 static void mpc52xx_fec_set_multicast_list(struct net_device *dev)
 614 {
 615         struct mpc52xx_fec_priv *priv = netdev_priv(dev);
 616         struct mpc52xx_fec __iomem *fec = priv->fec;
 617         u32 rx_control;
 618
 619         rx_control = in_be32(&fec->r_cntrl);
 620
 621         if (dev->flags & IFF_PROMISC) {
 622                 rx_control |= FEC_RCNTRL_PROM;
 623                 out_be32(&fec->r_cntrl, rx_control);
 624         } else {
 625                 rx_control &= ~FEC_RCNTRL_PROM;
 626                 out_be32(&fec->r_cntrl, rx_control);
 627
 628                 if (dev->flags & IFF_ALLMULTI) {
 629                         out_be32(&fec->gaddr1, 0xffffffff);
 630                         out_be32(&fec->gaddr2, 0xffffffff);
 631                 } else {
 632                         u32 crc;
 633                         int i;
 634                         struct dev_mc_list *dmi;
 635                         u32 gaddr1 = 0x00000000;
 636                         u32 gaddr2 = 0x00000000;
 637
 638                         dmi = dev->mc_list;
 639                         for (i=0; i<dev->mc_count; i++) {
 640                                 crc = ether_crc_le(6, dmi->dmi_addr) >> 26;
 641                                 if (crc >= 32)
 642                                         gaddr1 |= 1 << (crc-32);
 643                                 else
 644                                         gaddr2 |= 1 << crc;
 645                                 dmi = dmi->next;
 646                         }
 647                         out_be32(&fec->gaddr1, gaddr1);
 648                         out_be32(&fec->gaddr2, gaddr2);
 649                 }
 650         }
 651 }
 652
 653 /**
 654  * mpc52xx_fec_hw_init
 655  * @dev: network device
 656  *
 657  * Setup various hardware setting, only needed once on start
 658  */
 659 static void mpc52xx_fec_hw_init(struct net_device *dev)
 660 {
 661         struct mpc52xx_fec_priv *priv = netdev_priv(dev);
 662         struct mpc52xx_fec __iomem *fec = priv->fec;
 663         int i;
 664
 665         /* Whack a reset.  We should wait for this. */
 666         out_be32(&fec->ecntrl, FEC_ECNTRL_RESET);
 667         for (i = 0; i < FEC_RESET_DELAY; ++i) {
 668                 if ((in_be32(&fec->ecntrl) & FEC_ECNTRL_RESET) == 0)
 669                         break;
 670                 udelay(1);
 671         }
 672         if (i == FEC_RESET_DELAY)
 673                 dev_err(&dev->dev, "FEC Reset timeout!\n");
 674
 675         /* set pause to 0x20 frames */
 676         out_be32(&fec->op_pause, FEC_OP_PAUSE_OPCODE | 0x20);
 677
 678         /* high service request will be deasserted when there's < 7 bytes in fifo
 679          * low service request will be deasserted when there's < 4*7 bytes in fifo
 680          */
 681         out_be32(&fec->rfifo_cntrl, FEC_FIFO_CNTRL_FRAME | FEC_FIFO_CNTRL_LTG_7);
 682         out_be32(&fec->tfifo_cntrl, FEC_FIFO_CNTRL_FRAME | FEC_FIFO_CNTRL_LTG_7);
 683
 684         /* alarm when <= x bytes in FIFO */
 685         out_be32(&fec->rfifo_alarm, 0x0000030c);
 686         out_be32(&fec->tfifo_alarm, 0x00000100);
 687
 688         /* begin transmittion when 256 bytes are in FIFO (or EOF or FIFO full) */
 689         out_be32(&fec->x_wmrk, FEC_FIFO_WMRK_256B);
 690
 691         /* enable crc generation */
 692         out_be32(&fec->xmit_fsm, FEC_XMIT_FSM_APPEND_CRC | FEC_XMIT_FSM_ENABLE_CRC);
 693         out_be32(&fec->iaddr1, 0x00000000);     /* No individual filter */
 694         out_be32(&fec->iaddr2, 0x00000000);     /* No individual filter */
 695
 696         /* set phy speed.
 697          * this can't be done in phy driver, since it needs to be called
 698          * before fec stuff (even on resume) */
 699         mpc52xx_fec_phy_hw_init(priv);
 700 }
 701
 702 /**
 703  * mpc52xx_fec_start
 704  * @dev: network device
 705  *
 706  * This function is called to start or restart the FEC during a link
 707  * change.  This happens on fifo errors or when switching between half
 708  * and full duplex.
 709  */
 710 static void mpc52xx_fec_start(struct net_device *dev)
 711 {
 712         struct mpc52xx_fec_priv *priv = netdev_priv(dev);
 713         struct mpc52xx_fec __iomem *fec = priv->fec;
 714         u32 rcntrl;
 715         u32 tcntrl;
 716         u32 tmp;
 717
 718         /* clear sticky error bits */
 719         tmp = FEC_FIFO_STATUS_ERR | FEC_FIFO_STATUS_UF | FEC_FIFO_STATUS_OF;
 720         out_be32(&fec->rfifo_status, in_be32(&fec->rfifo_status) & tmp);
 721         out_be32(&fec->tfifo_status, in_be32(&fec->tfifo_status) & tmp);
 722
 723         /* FIFOs will reset on mpc52xx_fec_enable */
 724         out_be32(&fec->reset_cntrl, FEC_RESET_CNTRL_ENABLE_IS_RESET);
 725
 726         /* Set station address. */
 727         mpc52xx_fec_set_paddr(dev, dev->dev_addr);
 728
 729         mpc52xx_fec_set_multicast_list(dev);
 730
 731         /* set max frame len, enable flow control, select mii mode */
 732         rcntrl = FEC_RX_BUFFER_SIZE << 16;      /* max frame length */
 733         rcntrl |= FEC_RCNTRL_FCE;
 734
 735         if (priv->phy_addr != FEC5200_PHYADDR_7WIRE)
 736                 rcntrl |= FEC_RCNTRL_MII_MODE;
 737
 738         if (priv->duplex == DUPLEX_FULL)
 739                 tcntrl = FEC_TCNTRL_FDEN;       /* FD enable */
 740         else {
 741                 rcntrl |= FEC_RCNTRL_DRT;       /* disable Rx on Tx (HD) */
 742                 tcntrl = 0;
 743         }
 744         out_be32(&fec->r_cntrl, rcntrl);
 745         out_be32(&fec->x_cntrl, tcntrl);
 746
 747         /* Clear any outstanding interrupt. */
 748         out_be32(&fec->ievent, 0xffffffff);
 749
 750         /* Enable interrupts we wish to service. */
 751         out_be32(&fec->imask, FEC_IMASK_ENABLE);
 752
 753         /* And last, enable the transmit and receive processing. */
 754         out_be32(&fec->ecntrl, FEC_ECNTRL_ETHER_EN);
 755         out_be32(&fec->r_des_active, 0x01000000);
 756 }
 757
 758 /**
 759  * mpc52xx_fec_stop
 760  * @dev: network device
 761  *
 762  * stop all activity on fec and empty dma buffers
 763  */
 764 static void mpc52xx_fec_stop(struct net_device *dev)
 765 {
 766         struct mpc52xx_fec_priv *priv = netdev_priv(dev);
 767         struct mpc52xx_fec __iomem *fec = priv->fec;
 768         unsigned long timeout;
 769
 770         /* disable all interrupts */
 771         out_be32(&fec->imask, 0);
 772
 773         /* Disable the rx task. */
 774         bcom_disable(priv->rx_dmatsk);
 775
 776         /* Wait for tx queue to drain, but only if we're in process context */
 777         if (!in_interrupt()) {
 778                 timeout = jiffies + msecs_to_jiffies(2000);
 779                 while (time_before(jiffies, timeout) &&
 780                                 !bcom_queue_empty(priv->tx_dmatsk))
 781                         msleep(100);
 782
 783                 if (time_after_eq(jiffies, timeout))
 784                         dev_err(&dev->dev, "queues didn't drain\n");
 785 #if 1
 786                 if (time_after_eq(jiffies, timeout)) {
 787                         dev_err(&dev->dev, "  tx: index: %i, outdex: %i\n",
 788                                         priv->tx_dmatsk->index,
 789                                         priv->tx_dmatsk->outdex);
 790                         dev_err(&dev->dev, "  rx: index: %i, outdex: %i\n",
 791                                         priv->rx_dmatsk->index,
 792                                         priv->rx_dmatsk->outdex);
 793                 }
 794 #endif
 795         }
 796
 797         bcom_disable(priv->tx_dmatsk);
 798
 799         /* Stop FEC */
 800         out_be32(&fec->ecntrl, in_be32(&fec->ecntrl) & ~FEC_ECNTRL_ETHER_EN);
 801
 802         return;
 803 }
 804
 805 /* reset fec and bestcomm tasks */
 806 static void mpc52xx_fec_reset(struct net_device *dev)
 807 {
 808         struct mpc52xx_fec_priv *priv = netdev_priv(dev);
 809         struct mpc52xx_fec __iomem *fec = priv->fec;
 810
 811         mpc52xx_fec_stop(dev);
 812
 813         out_be32(&fec->rfifo_status, in_be32(&fec->rfifo_status));
 814         out_be32(&fec->reset_cntrl, FEC_RESET_CNTRL_RESET_FIFO);
 815
 816         mpc52xx_fec_free_rx_buffers(dev, priv->rx_dmatsk);
 817
 818         mpc52xx_fec_hw_init(dev);
 819
 820         phy_stop(priv->phydev);
 821         phy_write(priv->phydev, MII_BMCR, BMCR_RESET);
 822         phy_start(priv->phydev);
 823
 824         bcom_fec_rx_reset(priv->rx_dmatsk);
 825         bcom_fec_tx_reset(priv->tx_dmatsk);
 826
 827         mpc52xx_fec_alloc_rx_buffers(dev, priv->rx_dmatsk);
 828
 829         bcom_enable(priv->rx_dmatsk);
 830         bcom_enable(priv->tx_dmatsk);
 831
 832         mpc52xx_fec_start(dev);
 833 }
 834
 835
 836 /* ethtool interface */
 837 static void mpc52xx_fec_get_drvinfo(struct net_device *dev,
 838                 struct ethtool_drvinfo *info)
 839 {
 840         strcpy(info->driver, DRIVER_NAME);
 841 }
 842
 843 static int mpc52xx_fec_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 844 {
 845         struct mpc52xx_fec_priv *priv = netdev_priv(dev);
 846
 847         if (!priv->phydev)
 848                 return -ENODEV;
 849
 850         return phy_ethtool_gset(priv->phydev, cmd);
 851 }
 852
 853 static int mpc52xx_fec_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 854 {
 855         struct mpc52xx_fec_priv *priv = netdev_priv(dev);
 856
 857         if (!priv->phydev)
 858                 return -ENODEV;
 859
 860         return phy_ethtool_sset(priv->phydev, cmd);
 861 }
 862
 863 static u32 mpc52xx_fec_get_msglevel(struct net_device *dev)
 864 {
 865         struct mpc52xx_fec_priv *priv = netdev_priv(dev);
 866         return priv->msg_enable;
 867 }
 868
 869 static void mpc52xx_fec_set_msglevel(struct net_device *dev, u32 level)
 870 {
 871         struct mpc52xx_fec_priv *priv = netdev_priv(dev);
 872         priv->msg_enable = level;
 873 }
 874
 875 static const struct ethtool_ops mpc52xx_fec_ethtool_ops = {
 876         .get_drvinfo = mpc52xx_fec_get_drvinfo,
 877         .get_settings = mpc52xx_fec_get_settings,
 878         .set_settings = mpc52xx_fec_set_settings,
 879         .get_link = ethtool_op_get_link,
 880         .get_msglevel = mpc52xx_fec_get_msglevel,
 881         .set_msglevel = mpc52xx_fec_set_msglevel,
 882 };
 883
 884
 885 static int mpc52xx_fec_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 886 {
 887         struct mpc52xx_fec_priv *priv = netdev_priv(dev);
 888
 889         if (!priv->phydev)
 890                 return -ENOTSUPP;
 891
 892         return phy_mii_ioctl(priv->phydev, if_mii(rq), cmd);
 893 }
 894
 895 static const struct net_device_ops mpc52xx_fec_netdev_ops = {
 896         .ndo_open = mpc52xx_fec_open,
 897         .ndo_stop = mpc52xx_fec_close,
 898         .ndo_start_xmit = mpc52xx_fec_start_xmit,
 899         .ndo_set_multicast_list = mpc52xx_fec_set_multicast_list,
 900         .ndo_set_mac_address = mpc52xx_fec_set_mac_address,
 901         .ndo_validate_addr = eth_validate_addr,
 902         .ndo_do_ioctl = mpc52xx_fec_ioctl,
 903         .ndo_change_mtu = eth_change_mtu,
 904         .ndo_tx_timeout = mpc52xx_fec_tx_timeout,
 905         .ndo_get_stats = mpc52xx_fec_get_stats,
 906 #ifdef CONFIG_NET_POLL_CONTROLLER
 907         .ndo_poll_controller = mpc52xx_fec_poll_controller,
 908 #endif
 909 };
 910
 911 /* ======================================================================== */
 912 /* OF Driver                                                                */
 913 /* ======================================================================== */
 914
 915 static int __devinit
 916 mpc52xx_fec_probe(struct of_device *op, const struct of_device_id *match)
 917 {
 918         int rv;
 919         struct net_device *ndev;
 920         struct mpc52xx_fec_priv *priv = NULL;
 921         struct resource mem;
 922         struct device_node *phy_node;
 923         const phandle *phy_handle;
 924         const u32 *prop;
 925         int prop_size;
 926
 927         phys_addr_t rx_fifo;
 928         phys_addr_t tx_fifo;
 929
 930         /* Get the ether ndev & it's private zone */
 931         ndev = alloc_etherdev(sizeof(struct mpc52xx_fec_priv));
 932         if (!ndev)
 933                 return -ENOMEM;
 934
 935         priv = netdev_priv(ndev);
 936
 937         /* Reserve FEC control zone */
 938         rv = of_address_to_resource(op->node, 0, &mem);
 939         if (rv) {
 940                 printk(KERN_ERR DRIVER_NAME ": "
 941                                 "Error while parsing device node resource\n" );
 942                 return rv;
 943         }
 944         if ((mem.end - mem.start + 1) < sizeof(struct mpc52xx_fec)) {
 945                 printk(KERN_ERR DRIVER_NAME
 946                         " - invalid resource size (%lx < %x), check mpc52xx_devices.c\n",
 947                         (unsigned long)(mem.end - mem.start + 1), sizeof(struct mpc52xx_fec));
 948                 return -EINVAL;
 949         }
 950
 951         if (!request_mem_region(mem.start, sizeof(struct mpc52xx_fec), DRIVER_NAME))
 952                 return -EBUSY;
 953
 954         /* Init ether ndev with what we have */
 955         ndev->netdev_ops        = &mpc52xx_fec_netdev_ops;
 956         ndev->ethtool_ops       = &mpc52xx_fec_ethtool_ops;
 957         ndev->watchdog_timeo    = FEC_WATCHDOG_TIMEOUT;
 958         ndev->base_addr         = mem.start;
 959
 960         spin_lock_init(&priv->lock);
 961
 962         /* ioremap the zones */
 963         priv->fec = ioremap(mem.start, sizeof(struct mpc52xx_fec));
 964
 965         if (!priv->fec) {
 966                 rv = -ENOMEM;
 967                 goto probe_error;
 968         }
 969
 970         /* Bestcomm init */
 971         rx_fifo = ndev->base_addr + offsetof(struct mpc52xx_fec, rfifo_data);
 972         tx_fifo = ndev->base_addr + offsetof(struct mpc52xx_fec, tfifo_data);
 973
 974         priv->rx_dmatsk = bcom_fec_rx_init(FEC_RX_NUM_BD, rx_fifo, FEC_RX_BUFFER_SIZE);
 975         priv->tx_dmatsk = bcom_fec_tx_init(FEC_TX_NUM_BD, tx_fifo);
 976
 977         if (!priv->rx_dmatsk || !priv->tx_dmatsk) {
 978                 printk(KERN_ERR DRIVER_NAME ": Can not init SDMA tasks\n" );
 979                 rv = -ENOMEM;
 980                 goto probe_error;
 981         }
 982
 983         /* Get the IRQ we need one by one */
 984                 /* Control */
 985         ndev->irq = irq_of_parse_and_map(op->node, 0);
 986
 987                 /* RX */
 988         priv->r_irq = bcom_get_task_irq(priv->rx_dmatsk);
 989
 990                 /* TX */
 991         priv->t_irq = bcom_get_task_irq(priv->tx_dmatsk);
 992
 993         /* MAC address init */
 994         if (!is_zero_ether_addr(mpc52xx_fec_mac_addr))
 995                 memcpy(ndev->dev_addr, mpc52xx_fec_mac_addr, 6);
 996         else
 997                 mpc52xx_fec_get_paddr(ndev, ndev->dev_addr);
 998
 999         priv->msg_enable = netif_msg_init(debug, MPC52xx_MESSAGES_DEFAULT);
1000
1001         /*
1002          * Link mode configuration
1003          */
1004
1005         /* Start with safe defaults for link connection */
1006         priv->phy_addr = FEC5200_PHYADDR_NONE;
1007         priv->speed = 100;
1008         priv->duplex = DUPLEX_HALF;
1009         priv->phy_speed = ((mpc52xx_find_ipb_freq(op->node) >> 20) / 5) << 1;
1010
1011         /* the 7-wire property means don't use MII mode */
1012         if (of_find_property(op->node, "fsl,7-wire-mode", NULL))
1013                 priv->phy_addr = FEC5200_PHYADDR_7WIRE;
1014
1015         /* The current speed preconfigures the speed of the MII link */
1016         prop = of_get_property(op->node, "current-speed", &prop_size);
1017         if (prop && (prop_size >= sizeof(u32) * 2)) {
1018                 priv->speed = prop[0];
1019                 priv->duplex = prop[1] ? DUPLEX_FULL : DUPLEX_HALF;
1020         }
1021
1022         /* If there is a phy handle, setup link to that phy */
1023         phy_handle = of_get_property(op->node, "phy-handle", &prop_size);
1024         if (phy_handle && (prop_size >= sizeof(phandle))) {
1025                 phy_node = of_find_node_by_phandle(*phy_handle);
1026                 prop = of_get_property(phy_node, "reg", &prop_size);
1027                 if (prop && (prop_size >= sizeof(u32)))
1028                         if ((*prop >= 0) && (*prop < PHY_MAX_ADDR))
1029                                 priv->phy_addr = *prop;
1030                 of_node_put(phy_node);
1031         }
1032
1033         /* Hardware init */
1034         mpc52xx_fec_hw_init(ndev);
1035
1036         mpc52xx_fec_reset_stats(ndev);
1037
1038         SET_NETDEV_DEV(ndev, &op->dev);
1039
1040         /* Register the new network device */
1041         rv = register_netdev(ndev);
1042         if (rv < 0)
1043                 goto probe_error;
1044
1045         /* Now report the link setup */
1046         switch (priv->phy_addr) {
1047          case FEC5200_PHYADDR_NONE:
1048                 dev_info(&ndev->dev, "Fixed speed MII link: %i%cD\n",
1049                          priv->speed, priv->duplex ? 'F' : 'H');
1050                 break;
1051          case FEC5200_PHYADDR_7WIRE:
1052                 dev_info(&ndev->dev, "using 7-wire PHY mode\n");
1053                 break;
1054          default:
1055                 dev_info(&ndev->dev, "Using PHY at MDIO address %i\n",
1056                          priv->phy_addr);
1057         }
1058
1059         /* We're done ! */
1060         dev_set_drvdata(&op->dev, ndev);
1061
1062         return 0;
1063
1064
1065         /* Error handling - free everything that might be allocated */
1066 probe_error:
1067
1068         irq_dispose_mapping(ndev->irq);
1069
1070         if (priv->rx_dmatsk)
1071                 bcom_fec_rx_release(priv->rx_dmatsk);
1072         if (priv->tx_dmatsk)
1073                 bcom_fec_tx_release(priv->tx_dmatsk);
1074
1075         if (priv->fec)
1076                 iounmap(priv->fec);
1077
1078         release_mem_region(mem.start, sizeof(struct mpc52xx_fec));
1079
1080         free_netdev(ndev);
1081
1082         return rv;
1083 }
1084
1085 static int
1086 mpc52xx_fec_remove(struct of_device *op)
1087 {
1088         struct net_device *ndev;
1089         struct mpc52xx_fec_priv *priv;
1090
1091         ndev = dev_get_drvdata(&op->dev);
1092         priv = netdev_priv(ndev);
1093
1094         unregister_netdev(ndev);
1095
1096         irq_dispose_mapping(ndev->irq);
1097
1098         bcom_fec_rx_release(priv->rx_dmatsk);
1099         bcom_fec_tx_release(priv->tx_dmatsk);
1100
1101         iounmap(priv->fec);
1102
1103         release_mem_region(ndev->base_addr, sizeof(struct mpc52xx_fec));
1104
1105         free_netdev(ndev);
1106
1107         dev_set_drvdata(&op->dev, NULL);
1108         return 0;
1109 }
1110
1111 #ifdef CONFIG_PM
1112 static int mpc52xx_fec_of_suspend(struct of_device *op, pm_message_t state)
1113 {
1114         struct net_device *dev = dev_get_drvdata(&op->dev);
1115
1116         if (netif_running(dev))
1117                 mpc52xx_fec_close(dev);
1118
1119         return 0;
1120 }
1121
1122 static int mpc52xx_fec_of_resume(struct of_device *op)
1123 {
1124         struct net_device *dev = dev_get_drvdata(&op->dev);
1125
1126         mpc52xx_fec_hw_init(dev);
1127         mpc52xx_fec_reset_stats(dev);
1128
1129         if (netif_running(dev))
1130                 mpc52xx_fec_open(dev);
1131
1132         return 0;
1133 }
1134 #endif
1135
1136 static struct of_device_id mpc52xx_fec_match[] = {
1137         { .compatible = "fsl,mpc5200b-fec", },
1138         { .compatible = "fsl,mpc5200-fec", },
1139         { .compatible = "mpc5200-fec", },
1140         { }
1141 };
1142
1143 MODULE_DEVICE_TABLE(of, mpc52xx_fec_match);
1144
1145 static struct of_platform_driver mpc52xx_fec_driver = {
1146         .owner          = THIS_MODULE,
1147         .name           = DRIVER_NAME,
1148         .match_table    = mpc52xx_fec_match,
1149         .probe          = mpc52xx_fec_probe,
1150         .remove         = mpc52xx_fec_remove,
1151 #ifdef CONFIG_PM
1152         .suspend        = mpc52xx_fec_of_suspend,
1153         .resume         = mpc52xx_fec_of_resume,
1154 #endif
1155 };
1156
1157
1158 /* ======================================================================== */
1159 /* Module                                                                   */
1160 /* ======================================================================== */
1161
1162 static int __init
1163 mpc52xx_fec_init(void)
1164 {
1165 #ifdef CONFIG_FEC_MPC52xx_MDIO
1166         int ret;
1167         ret = of_register_platform_driver(&mpc52xx_fec_mdio_driver);
1168         if (ret) {
1169                 printk(KERN_ERR DRIVER_NAME ": failed to register mdio driver\n");
1170                 return ret;
1171         }
1172 #endif
1173         return of_register_platform_driver(&mpc52xx_fec_driver);
1174 }
1175
1176 static void __exit
1177 mpc52xx_fec_exit(void)
1178 {
1179         of_unregister_platform_driver(&mpc52xx_fec_driver);
1180 #ifdef CONFIG_FEC_MPC52xx_MDIO
1181         of_unregister_platform_driver(&mpc52xx_fec_mdio_driver);
1182 #endif
1183 }
1184
1185
1186 module_init(mpc52xx_fec_init);
1187 module_exit(mpc52xx_fec_exit);
1188
1189 MODULE_LICENSE("GPL");
1190 MODULE_AUTHOR("Dale Farnsworth");
1191 MODULE_DESCRIPTION("Ethernet driver for the Freescale MPC52xx FEC");