drivers/net/fs_enet/fs_enet-main.c

   1 /*
   2  * Combined Ethernet driver for Motorola MPC8xx and MPC82xx.
   3  *
   4  * Copyright (c) 2003 Intracom S.A.
   5  *  by Pantelis Antoniou <panto@intracom.gr>
   6  *
   7  * 2005 (c) MontaVista Software, Inc.
   8  * Vitaly Bordug <vbordug@ru.mvista.com>
   9  *
  10  * Heavily based on original FEC driver by Dan Malek <dan@embeddededge.com>
  11  * and modifications by Joakim Tjernlund <joakim.tjernlund@lumentis.se>
  12  *
  13  * This file is licensed under the terms of the GNU General Public License
  14  * version 2. This program is licensed "as is" without any warranty of any
  15  * kind, whether express or implied.
  16  */
  17
  18 #include <linux/module.h>
  19 #include <linux/kernel.h>
  20 #include <linux/types.h>
  21 #include <linux/string.h>
  22 #include <linux/ptrace.h>
  23 #include <linux/errno.h>
  24 #include <linux/ioport.h>
  25 #include <linux/slab.h>
  26 #include <linux/interrupt.h>
  27 #include <linux/init.h>
  28 #include <linux/delay.h>
  29 #include <linux/netdevice.h>
  30 #include <linux/etherdevice.h>
  31 #include <linux/skbuff.h>
  32 #include <linux/spinlock.h>
  33 #include <linux/mii.h>
  34 #include <linux/ethtool.h>
  35 #include <linux/bitops.h>
  36 #include <linux/fs.h>
  37 #include <linux/platform_device.h>
  38 #include <linux/phy.h>
  39
  40 #include <linux/vmalloc.h>
  41 #include <asm/pgtable.h>
  42 #include <asm/irq.h>
  43 #include <asm/uaccess.h>
  44
  45 #ifdef CONFIG_PPC_CPM_NEW_BINDING
  46 #include <linux/of_gpio.h>
  47 #include <linux/of_platform.h>
  48 #endif
  49
  50 #include "fs_enet.h"
  51
  52 /*************************************************/
  53
  54 #ifndef CONFIG_PPC_CPM_NEW_BINDING
  55 static char version[] __devinitdata =
  56     DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")" "\n";
  57 #endif
  58
  59 MODULE_AUTHOR("Pantelis Antoniou <panto@intracom.gr>");
  60 MODULE_DESCRIPTION("Freescale Ethernet Driver");
  61 MODULE_LICENSE("GPL");
  62 MODULE_VERSION(DRV_MODULE_VERSION);
  63
  64 static int fs_enet_debug = -1; /* -1 == use FS_ENET_DEF_MSG_ENABLE as value */
  65 module_param(fs_enet_debug, int, 0);
  66 MODULE_PARM_DESC(fs_enet_debug,
  67                  "Freescale bitmapped debugging message enable value");
  68
  69 #ifdef CONFIG_NET_POLL_CONTROLLER
  70 static void fs_enet_netpoll(struct net_device *dev);
  71 #endif
  72
  73 static void fs_set_multicast_list(struct net_device *dev)
  74 {
  75         struct fs_enet_private *fep = netdev_priv(dev);
  76
  77         (*fep->ops->set_multicast_list)(dev);
  78 }
  79
  80 static void skb_align(struct sk_buff *skb, int align)
  81 {
  82         int off = ((unsigned long)skb->data) & (align - 1);
  83
  84         if (off)
  85                 skb_reserve(skb, align - off);
  86 }
  87
  88 /* NAPI receive function */
  89 static int fs_enet_rx_napi(struct napi_struct *napi, int budget)
  90 {
  91         struct fs_enet_private *fep = container_of(napi, struct fs_enet_private, napi);
  92         struct net_device *dev = fep->ndev;
  93         const struct fs_platform_info *fpi = fep->fpi;
  94         cbd_t __iomem *bdp;
  95         struct sk_buff *skb, *skbn, *skbt;
  96         int received = 0;
  97         u16 pkt_len, sc;
  98         int curidx;
  99
 100         /*
 101          * First, grab all of the stats for the incoming packet.
 102          * These get messed up if we get called due to a busy condition.
 103          */
 104         bdp = fep->cur_rx;
 105
 106         /* clear RX status bits for napi*/
 107         (*fep->ops->napi_clear_rx_event)(dev);
 108
 109         while (((sc = CBDR_SC(bdp)) & BD_ENET_RX_EMPTY) == 0) {
 110                 curidx = bdp - fep->rx_bd_base;
 111
 112                 /*
 113                  * Since we have allocated space to hold a complete frame,
 114                  * the last indicator should be set.
 115                  */
 116                 if ((sc & BD_ENET_RX_LAST) == 0)
 117                         printk(KERN_WARNING DRV_MODULE_NAME
 118                                ": %s rcv is not +last\n",
 119                                dev->name);
 120
 121                 /*
 122                  * Check for errors.
 123                  */
 124                 if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_CL |
 125                           BD_ENET_RX_NO | BD_ENET_RX_CR | BD_ENET_RX_OV)) {
 126                         fep->stats.rx_errors++;
 127                         /* Frame too long or too short. */
 128                         if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH))
 129                                 fep->stats.rx_length_errors++;
 130                         /* Frame alignment */
 131                         if (sc & (BD_ENET_RX_NO | BD_ENET_RX_CL))
 132                                 fep->stats.rx_frame_errors++;
 133                         /* CRC Error */
 134                         if (sc & BD_ENET_RX_CR)
 135                                 fep->stats.rx_crc_errors++;
 136                         /* FIFO overrun */
 137                         if (sc & BD_ENET_RX_OV)
 138                                 fep->stats.rx_crc_errors++;
 139
 140                         skb = fep->rx_skbuff[curidx];
 141
 142                         dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
 143                                 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
 144                                 DMA_FROM_DEVICE);
 145
 146                         skbn = skb;
 147
 148                 } else {
 149                         skb = fep->rx_skbuff[curidx];
 150
 151                         dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
 152                                 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
 153                                 DMA_FROM_DEVICE);
 154
 155                         /*
 156                          * Process the incoming frame.
 157                          */
 158                         fep->stats.rx_packets++;
 159                         pkt_len = CBDR_DATLEN(bdp) - 4; /* remove CRC */
 160                         fep->stats.rx_bytes += pkt_len + 4;
 161
 162                         if (pkt_len <= fpi->rx_copybreak) {
 163                                 /* +2 to make IP header L1 cache aligned */
 164                                 skbn = dev_alloc_skb(pkt_len + 2);
 165                                 if (skbn != NULL) {
 166                                         skb_reserve(skbn, 2);   /* align IP header */
 167                                         skb_copy_from_linear_data(skb,
 168                                                       skbn->data, pkt_len);
 169                                         /* swap */
 170                                         skbt = skb;
 171                                         skb = skbn;
 172                                         skbn = skbt;
 173                                 }
 174                         } else {
 175                                 skbn = dev_alloc_skb(ENET_RX_FRSIZE);
 176
 177                                 if (skbn)
 178                                         skb_align(skbn, ENET_RX_ALIGN);
 179                         }
 180
 181                         if (skbn != NULL) {
 182                                 skb_put(skb, pkt_len);  /* Make room */
 183                                 skb->protocol = eth_type_trans(skb, dev);
 184                                 received++;
 185                                 netif_receive_skb(skb);
 186                         } else {
 187                                 printk(KERN_WARNING DRV_MODULE_NAME
 188                                        ": %s Memory squeeze, dropping packet.\n",
 189                                        dev->name);
 190                                 fep->stats.rx_dropped++;
 191                                 skbn = skb;
 192                         }
 193                 }
 194
 195                 fep->rx_skbuff[curidx] = skbn;
 196                 CBDW_BUFADDR(bdp, dma_map_single(fep->dev, skbn->data,
 197                              L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
 198                              DMA_FROM_DEVICE));
 199                 CBDW_DATLEN(bdp, 0);
 200                 CBDW_SC(bdp, (sc & ~BD_ENET_RX_STATS) | BD_ENET_RX_EMPTY);
 201
 202                 /*
 203                  * Update BD pointer to next entry.
 204                  */
 205                 if ((sc & BD_ENET_RX_WRAP) == 0)
 206                         bdp++;
 207                 else
 208                         bdp = fep->rx_bd_base;
 209
 210                 (*fep->ops->rx_bd_done)(dev);
 211
 212                 if (received >= budget)
 213                         break;
 214         }
 215
 216         fep->cur_rx = bdp;
 217
 218         if (received < budget) {
 219                 /* done */
 220                 netif_rx_complete(dev, napi);
 221                 (*fep->ops->napi_enable_rx)(dev);
 222         }
 223         return received;
 224 }
 225
 226 /* non NAPI receive function */
 227 static int fs_enet_rx_non_napi(struct net_device *dev)
 228 {
 229         struct fs_enet_private *fep = netdev_priv(dev);
 230         const struct fs_platform_info *fpi = fep->fpi;
 231         cbd_t __iomem *bdp;
 232         struct sk_buff *skb, *skbn, *skbt;
 233         int received = 0;
 234         u16 pkt_len, sc;
 235         int curidx;
 236         /*
 237          * First, grab all of the stats for the incoming packet.
 238          * These get messed up if we get called due to a busy condition.
 239          */
 240         bdp = fep->cur_rx;
 241
 242         while (((sc = CBDR_SC(bdp)) & BD_ENET_RX_EMPTY) == 0) {
 243
 244                 curidx = bdp - fep->rx_bd_base;
 245
 246                 /*
 247                  * Since we have allocated space to hold a complete frame,
 248                  * the last indicator should be set.
 249                  */
 250                 if ((sc & BD_ENET_RX_LAST) == 0)
 251                         printk(KERN_WARNING DRV_MODULE_NAME
 252                                ": %s rcv is not +last\n",
 253                                dev->name);
 254
 255                 /*
 256                  * Check for errors.
 257                  */
 258                 if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_CL |
 259                           BD_ENET_RX_NO | BD_ENET_RX_CR | BD_ENET_RX_OV)) {
 260                         fep->stats.rx_errors++;
 261                         /* Frame too long or too short. */
 262                         if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH))
 263                                 fep->stats.rx_length_errors++;
 264                         /* Frame alignment */
 265                         if (sc & (BD_ENET_RX_NO | BD_ENET_RX_CL))
 266                                 fep->stats.rx_frame_errors++;
 267                         /* CRC Error */
 268                         if (sc & BD_ENET_RX_CR)
 269                                 fep->stats.rx_crc_errors++;
 270                         /* FIFO overrun */
 271                         if (sc & BD_ENET_RX_OV)
 272                                 fep->stats.rx_crc_errors++;
 273
 274                         skb = fep->rx_skbuff[curidx];
 275
 276                         dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
 277                                 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
 278                                 DMA_FROM_DEVICE);
 279
 280                         skbn = skb;
 281
 282                 } else {
 283
 284                         skb = fep->rx_skbuff[curidx];
 285
 286                         dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
 287                                 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
 288                                 DMA_FROM_DEVICE);
 289
 290                         /*
 291                          * Process the incoming frame.
 292                          */
 293                         fep->stats.rx_packets++;
 294                         pkt_len = CBDR_DATLEN(bdp) - 4; /* remove CRC */
 295                         fep->stats.rx_bytes += pkt_len + 4;
 296
 297                         if (pkt_len <= fpi->rx_copybreak) {
 298                                 /* +2 to make IP header L1 cache aligned */
 299                                 skbn = dev_alloc_skb(pkt_len + 2);
 300                                 if (skbn != NULL) {
 301                                         skb_reserve(skbn, 2);   /* align IP header */
 302                                         skb_copy_from_linear_data(skb,
 303                                                       skbn->data, pkt_len);
 304                                         /* swap */
 305                                         skbt = skb;
 306                                         skb = skbn;
 307                                         skbn = skbt;
 308                                 }
 309                         } else {
 310                                 skbn = dev_alloc_skb(ENET_RX_FRSIZE);
 311
 312                                 if (skbn)
 313                                         skb_align(skbn, ENET_RX_ALIGN);
 314                         }
 315
 316                         if (skbn != NULL) {
 317                                 skb_put(skb, pkt_len);  /* Make room */
 318                                 skb->protocol = eth_type_trans(skb, dev);
 319                                 received++;
 320                                 netif_rx(skb);
 321                         } else {
 322                                 printk(KERN_WARNING DRV_MODULE_NAME
 323                                        ": %s Memory squeeze, dropping packet.\n",
 324                                        dev->name);
 325                                 fep->stats.rx_dropped++;
 326                                 skbn = skb;
 327                         }
 328                 }
 329
 330                 fep->rx_skbuff[curidx] = skbn;
 331                 CBDW_BUFADDR(bdp, dma_map_single(fep->dev, skbn->data,
 332                              L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
 333                              DMA_FROM_DEVICE));
 334                 CBDW_DATLEN(bdp, 0);
 335                 CBDW_SC(bdp, (sc & ~BD_ENET_RX_STATS) | BD_ENET_RX_EMPTY);
 336
 337                 /*
 338                  * Update BD pointer to next entry.
 339                  */
 340                 if ((sc & BD_ENET_RX_WRAP) == 0)
 341                         bdp++;
 342                 else
 343                         bdp = fep->rx_bd_base;
 344
 345                 (*fep->ops->rx_bd_done)(dev);
 346         }
 347
 348         fep->cur_rx = bdp;
 349
 350         return 0;
 351 }
 352
 353 static void fs_enet_tx(struct net_device *dev)
 354 {
 355         struct fs_enet_private *fep = netdev_priv(dev);
 356         cbd_t __iomem *bdp;
 357         struct sk_buff *skb;
 358         int dirtyidx, do_wake, do_restart;
 359         u16 sc;
 360
 361         spin_lock(&fep->tx_lock);
 362         bdp = fep->dirty_tx;
 363
 364         do_wake = do_restart = 0;
 365         while (((sc = CBDR_SC(bdp)) & BD_ENET_TX_READY) == 0) {
 366                 dirtyidx = bdp - fep->tx_bd_base;
 367
 368                 if (fep->tx_free == fep->tx_ring)
 369                         break;
 370
 371                 skb = fep->tx_skbuff[dirtyidx];
 372
 373                 /*
 374                  * Check for errors.
 375                  */
 376                 if (sc & (BD_ENET_TX_HB | BD_ENET_TX_LC |
 377                           BD_ENET_TX_RL | BD_ENET_TX_UN | BD_ENET_TX_CSL)) {
 378
 379                         if (sc & BD_ENET_TX_HB) /* No heartbeat */
 380                                 fep->stats.tx_heartbeat_errors++;
 381                         if (sc & BD_ENET_TX_LC) /* Late collision */
 382                                 fep->stats.tx_window_errors++;
 383                         if (sc & BD_ENET_TX_RL) /* Retrans limit */
 384                                 fep->stats.tx_aborted_errors++;
 385                         if (sc & BD_ENET_TX_UN) /* Underrun */
 386                                 fep->stats.tx_fifo_errors++;
 387                         if (sc & BD_ENET_TX_CSL)        /* Carrier lost */
 388                                 fep->stats.tx_carrier_errors++;
 389
 390                         if (sc & (BD_ENET_TX_LC | BD_ENET_TX_RL | BD_ENET_TX_UN)) {
 391                                 fep->stats.tx_errors++;
 392                                 do_restart = 1;
 393                         }
 394                 } else
 395                         fep->stats.tx_packets++;
 396
 397                 if (sc & BD_ENET_TX_READY)
 398                         printk(KERN_WARNING DRV_MODULE_NAME
 399                                ": %s HEY! Enet xmit interrupt and TX_READY.\n",
 400                                dev->name);
 401
 402                 /*
 403                  * Deferred means some collisions occurred during transmit,
 404                  * but we eventually sent the packet OK.
 405                  */
 406                 if (sc & BD_ENET_TX_DEF)
 407                         fep->stats.collisions++;
 408
 409                 /* unmap */
 410                 dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
 411                                 skb->len, DMA_TO_DEVICE);
 412
 413                 /*
 414                  * Free the sk buffer associated with this last transmit.
 415                  */
 416                 dev_kfree_skb_irq(skb);
 417                 fep->tx_skbuff[dirtyidx] = NULL;
 418
 419                 /*
 420                  * Update pointer to next buffer descriptor to be transmitted.
 421                  */
 422                 if ((sc & BD_ENET_TX_WRAP) == 0)
 423                         bdp++;
 424                 else
 425                         bdp = fep->tx_bd_base;
 426
 427                 /*
 428                  * Since we have freed up a buffer, the ring is no longer
 429                  * full.
 430                  */
 431                 if (!fep->tx_free++)
 432                         do_wake = 1;
 433         }
 434
 435         fep->dirty_tx = bdp;
 436
 437         if (do_restart)
 438                 (*fep->ops->tx_restart)(dev);
 439
 440         spin_unlock(&fep->tx_lock);
 441
 442         if (do_wake)
 443                 netif_wake_queue(dev);
 444 }
 445
 446 /*
 447  * The interrupt handler.
 448  * This is called from the MPC core interrupt.
 449  */
 450 static irqreturn_t
 451 fs_enet_interrupt(int irq, void *dev_id)
 452 {
 453         struct net_device *dev = dev_id;
 454         struct fs_enet_private *fep;
 455         const struct fs_platform_info *fpi;
 456         u32 int_events;
 457         u32 int_clr_events;
 458         int nr, napi_ok;
 459         int handled;
 460
 461         fep = netdev_priv(dev);
 462         fpi = fep->fpi;
 463
 464         nr = 0;
 465         while ((int_events = (*fep->ops->get_int_events)(dev)) != 0) {
 466                 nr++;
 467
 468                 int_clr_events = int_events;
 469                 if (fpi->use_napi)
 470                         int_clr_events &= ~fep->ev_napi_rx;
 471
 472                 (*fep->ops->clear_int_events)(dev, int_clr_events);
 473
 474                 if (int_events & fep->ev_err)
 475                         (*fep->ops->ev_error)(dev, int_events);
 476
 477                 if (int_events & fep->ev_rx) {
 478                         if (!fpi->use_napi)
 479                                 fs_enet_rx_non_napi(dev);
 480                         else {
 481                                 napi_ok = napi_schedule_prep(&fep->napi);
 482
 483                                 (*fep->ops->napi_disable_rx)(dev);
 484                                 (*fep->ops->clear_int_events)(dev, fep->ev_napi_rx);
 485
 486                                 /* NOTE: it is possible for FCCs in NAPI mode    */
 487                                 /* to submit a spurious interrupt while in poll  */
 488                                 if (napi_ok)
 489                                         __netif_rx_schedule(dev, &fep->napi);
 490                         }
 491                 }
 492
 493                 if (int_events & fep->ev_tx)
 494                         fs_enet_tx(dev);
 495         }
 496
 497         handled = nr > 0;
 498         return IRQ_RETVAL(handled);
 499 }
 500
 501 void fs_init_bds(struct net_device *dev)
 502 {
 503         struct fs_enet_private *fep = netdev_priv(dev);
 504         cbd_t __iomem *bdp;
 505         struct sk_buff *skb;
 506         int i;
 507
 508         fs_cleanup_bds(dev);
 509
 510         fep->dirty_tx = fep->cur_tx = fep->tx_bd_base;
 511         fep->tx_free = fep->tx_ring;
 512         fep->cur_rx = fep->rx_bd_base;
 513
 514         /*
 515          * Initialize the receive buffer descriptors.
 516          */
 517         for (i = 0, bdp = fep->rx_bd_base; i < fep->rx_ring; i++, bdp++) {
 518                 skb = dev_alloc_skb(ENET_RX_FRSIZE);
 519                 if (skb == NULL) {
 520                         printk(KERN_WARNING DRV_MODULE_NAME
 521                                ": %s Memory squeeze, unable to allocate skb\n",
 522                                dev->name);
 523                         break;
 524                 }
 525                 skb_align(skb, ENET_RX_ALIGN);
 526                 fep->rx_skbuff[i] = skb;
 527                 CBDW_BUFADDR(bdp,
 528                         dma_map_single(fep->dev, skb->data,
 529                                 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
 530                                 DMA_FROM_DEVICE));
 531                 CBDW_DATLEN(bdp, 0);    /* zero */
 532                 CBDW_SC(bdp, BD_ENET_RX_EMPTY |
 533                         ((i < fep->rx_ring - 1) ? 0 : BD_SC_WRAP));
 534         }
 535         /*
 536          * if we failed, fillup remainder
 537          */
 538         for (; i < fep->rx_ring; i++, bdp++) {
 539                 fep->rx_skbuff[i] = NULL;
 540                 CBDW_SC(bdp, (i < fep->rx_ring - 1) ? 0 : BD_SC_WRAP);
 541         }
 542
 543         /*
 544          * ...and the same for transmit.
 545          */
 546         for (i = 0, bdp = fep->tx_bd_base; i < fep->tx_ring; i++, bdp++) {
 547                 fep->tx_skbuff[i] = NULL;
 548                 CBDW_BUFADDR(bdp, 0);
 549                 CBDW_DATLEN(bdp, 0);
 550                 CBDW_SC(bdp, (i < fep->tx_ring - 1) ? 0 : BD_SC_WRAP);
 551         }
 552 }
 553
 554 void fs_cleanup_bds(struct net_device *dev)
 555 {
 556         struct fs_enet_private *fep = netdev_priv(dev);
 557         struct sk_buff *skb;
 558         cbd_t __iomem *bdp;
 559         int i;
 560
 561         /*
 562          * Reset SKB transmit buffers.
 563          */
 564         for (i = 0, bdp = fep->tx_bd_base; i < fep->tx_ring; i++, bdp++) {
 565                 if ((skb = fep->tx_skbuff[i]) == NULL)
 566                         continue;
 567
 568                 /* unmap */
 569                 dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
 570                                 skb->len, DMA_TO_DEVICE);
 571
 572                 fep->tx_skbuff[i] = NULL;
 573                 dev_kfree_skb(skb);
 574         }
 575
 576         /*
 577          * Reset SKB receive buffers
 578          */
 579         for (i = 0, bdp = fep->rx_bd_base; i < fep->rx_ring; i++, bdp++) {
 580                 if ((skb = fep->rx_skbuff[i]) == NULL)
 581                         continue;
 582
 583                 /* unmap */
 584                 dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
 585                         L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
 586                         DMA_FROM_DEVICE);
 587
 588                 fep->rx_skbuff[i] = NULL;
 589
 590                 dev_kfree_skb(skb);
 591         }
 592 }
 593
 594 /**********************************************************************************/
 595
 596 static int fs_enet_start_xmit(struct sk_buff *skb, struct net_device *dev)
 597 {
 598         struct fs_enet_private *fep = netdev_priv(dev);
 599         cbd_t __iomem *bdp;
 600         int curidx;
 601         u16 sc;
 602         unsigned long flags;
 603
 604         spin_lock_irqsave(&fep->tx_lock, flags);
 605
 606         /*
 607          * Fill in a Tx ring entry
 608          */
 609         bdp = fep->cur_tx;
 610
 611         if (!fep->tx_free || (CBDR_SC(bdp) & BD_ENET_TX_READY)) {
 612                 netif_stop_queue(dev);
 613                 spin_unlock_irqrestore(&fep->tx_lock, flags);
 614
 615                 /*
 616                  * Ooops.  All transmit buffers are full.  Bail out.
 617                  * This should not happen, since the tx queue should be stopped.
 618                  */
 619                 printk(KERN_WARNING DRV_MODULE_NAME
 620                        ": %s tx queue full!.\n", dev->name);
 621                 return NETDEV_TX_BUSY;
 622         }
 623
 624         curidx = bdp - fep->tx_bd_base;
 625         /*
 626          * Clear all of the status flags.
 627          */
 628         CBDC_SC(bdp, BD_ENET_TX_STATS);
 629
 630         /*
 631          * Save skb pointer.
 632          */
 633         fep->tx_skbuff[curidx] = skb;
 634
 635         fep->stats.tx_bytes += skb->len;
 636
 637         /*
 638          * Push the data cache so the CPM does not get stale memory data.
 639          */
 640         CBDW_BUFADDR(bdp, dma_map_single(fep->dev,
 641                                 skb->data, skb->len, DMA_TO_DEVICE));
 642         CBDW_DATLEN(bdp, skb->len);
 643
 644         dev->trans_start = jiffies;
 645
 646         /*
 647          * If this was the last BD in the ring, start at the beginning again.
 648          */
 649         if ((CBDR_SC(bdp) & BD_ENET_TX_WRAP) == 0)
 650                 fep->cur_tx++;
 651         else
 652                 fep->cur_tx = fep->tx_bd_base;
 653
 654         if (!--fep->tx_free)
 655                 netif_stop_queue(dev);
 656
 657         /* Trigger transmission start */
 658         sc = BD_ENET_TX_READY | BD_ENET_TX_INTR |
 659              BD_ENET_TX_LAST | BD_ENET_TX_TC;
 660
 661         /* note that while FEC does not have this bit
 662          * it marks it as available for software use
 663          * yay for hw reuse :) */
 664         if (skb->len <= 60)
 665                 sc |= BD_ENET_TX_PAD;
 666         CBDS_SC(bdp, sc);
 667
 668         (*fep->ops->tx_kickstart)(dev);
 669
 670         spin_unlock_irqrestore(&fep->tx_lock, flags);
 671
 672         return NETDEV_TX_OK;
 673 }
 674
 675 static int fs_request_irq(struct net_device *dev, int irq, const char *name,
 676                 irq_handler_t irqf)
 677 {
 678         struct fs_enet_private *fep = netdev_priv(dev);
 679
 680         (*fep->ops->pre_request_irq)(dev, irq);
 681         return request_irq(irq, irqf, IRQF_SHARED, name, dev);
 682 }
 683
 684 static void fs_free_irq(struct net_device *dev, int irq)
 685 {
 686         struct fs_enet_private *fep = netdev_priv(dev);
 687
 688         free_irq(irq, dev);
 689         (*fep->ops->post_free_irq)(dev, irq);
 690 }
 691
 692 static void fs_timeout(struct net_device *dev)
 693 {
 694         struct fs_enet_private *fep = netdev_priv(dev);
 695         unsigned long flags;
 696         int wake = 0;
 697
 698         fep->stats.tx_errors++;
 699
 700         spin_lock_irqsave(&fep->lock, flags);
 701
 702         if (dev->flags & IFF_UP) {
 703                 phy_stop(fep->phydev);
 704                 (*fep->ops->stop)(dev);
 705                 (*fep->ops->restart)(dev);
 706                 phy_start(fep->phydev);
 707         }
 708
 709         phy_start(fep->phydev);
 710         wake = fep->tx_free && !(CBDR_SC(fep->cur_tx) & BD_ENET_TX_READY);
 711         spin_unlock_irqrestore(&fep->lock, flags);
 712
 713         if (wake)
 714                 netif_wake_queue(dev);
 715 }
 716
 717 /*-----------------------------------------------------------------------------
 718  *  generic link-change handler - should be sufficient for most cases
 719  *-----------------------------------------------------------------------------*/
 720 static void generic_adjust_link(struct  net_device *dev)
 721 {
 722         struct fs_enet_private *fep = netdev_priv(dev);
 723         struct phy_device *phydev = fep->phydev;
 724         int new_state = 0;
 725
 726         if (phydev->link) {
 727                 /* adjust to duplex mode */
 728                 if (phydev->duplex != fep->oldduplex) {
 729                         new_state = 1;
 730                         fep->oldduplex = phydev->duplex;
 731                 }
 732
 733                 if (phydev->speed != fep->oldspeed) {
 734                         new_state = 1;
 735                         fep->oldspeed = phydev->speed;
 736                 }
 737
 738                 if (!fep->oldlink) {
 739                         new_state = 1;
 740                         fep->oldlink = 1;
 741                 }
 742
 743                 if (new_state)
 744                         fep->ops->restart(dev);
 745         } else if (fep->oldlink) {
 746                 new_state = 1;
 747                 fep->oldlink = 0;
 748                 fep->oldspeed = 0;
 749                 fep->oldduplex = -1;
 750         }
 751
 752         if (new_state && netif_msg_link(fep))
 753                 phy_print_status(phydev);
 754 }
 755
 756
 757 static void fs_adjust_link(struct net_device *dev)
 758 {
 759         struct fs_enet_private *fep = netdev_priv(dev);
 760         unsigned long flags;
 761
 762         spin_lock_irqsave(&fep->lock, flags);
 763
 764         if(fep->ops->adjust_link)
 765                 fep->ops->adjust_link(dev);
 766         else
 767                 generic_adjust_link(dev);
 768
 769         spin_unlock_irqrestore(&fep->lock, flags);
 770 }
 771
 772 static int fs_init_phy(struct net_device *dev)
 773 {
 774         struct fs_enet_private *fep = netdev_priv(dev);
 775         struct phy_device *phydev;
 776
 777         fep->oldlink = 0;
 778         fep->oldspeed = 0;
 779         fep->oldduplex = -1;
 780         if(fep->fpi->bus_id)
 781                 phydev = phy_connect(dev, fep->fpi->bus_id, &fs_adjust_link, 0,
 782                                 PHY_INTERFACE_MODE_MII);
 783         else {
 784                 printk("No phy bus ID specified in BSP code\n");
 785                 return -EINVAL;
 786         }
 787         if (IS_ERR(phydev)) {
 788                 printk(KERN_ERR "%s: Could not attach to PHY\n", dev->name);
 789                 return PTR_ERR(phydev);
 790         }
 791
 792         fep->phydev = phydev;
 793
 794         return 0;
 795 }
 796
 797 static int fs_enet_open(struct net_device *dev)
 798 {
 799         struct fs_enet_private *fep = netdev_priv(dev);
 800         int r;
 801         int err;
 802
 803         if (fep->fpi->use_napi)
 804                 napi_enable(&fep->napi);
 805
 806         /* Install our interrupt handler. */
 807         r = fs_request_irq(dev, fep->interrupt, "fs_enet-mac", fs_enet_interrupt);
 808         if (r != 0) {
 809                 printk(KERN_ERR DRV_MODULE_NAME
 810                        ": %s Could not allocate FS_ENET IRQ!", dev->name);
 811                 if (fep->fpi->use_napi)
 812                         napi_disable(&fep->napi);
 813                 return -EINVAL;
 814         }
 815
 816         err = fs_init_phy(dev);
 817         if (err) {
 818                 if (fep->fpi->use_napi)
 819                         napi_disable(&fep->napi);
 820                 return err;
 821         }
 822         phy_start(fep->phydev);
 823
 824         netif_start_queue(dev);
 825
 826         return 0;
 827 }
 828
 829 static int fs_enet_close(struct net_device *dev)
 830 {
 831         struct fs_enet_private *fep = netdev_priv(dev);
 832         unsigned long flags;
 833
 834         netif_stop_queue(dev);
 835         netif_carrier_off(dev);
 836         if (fep->fpi->use_napi)
 837                 napi_disable(&fep->napi);
 838         phy_stop(fep->phydev);
 839
 840         spin_lock_irqsave(&fep->lock, flags);
 841         spin_lock(&fep->tx_lock);
 842         (*fep->ops->stop)(dev);
 843         spin_unlock(&fep->tx_lock);
 844         spin_unlock_irqrestore(&fep->lock, flags);
 845
 846         /* release any irqs */
 847         phy_disconnect(fep->phydev);
 848         fep->phydev = NULL;
 849         fs_free_irq(dev, fep->interrupt);
 850
 851         return 0;
 852 }
 853
 854 static struct net_device_stats *fs_enet_get_stats(struct net_device *dev)
 855 {
 856         struct fs_enet_private *fep = netdev_priv(dev);
 857         return &fep->stats;
 858 }
 859
 860 /*************************************************************************/
 861
 862 static void fs_get_drvinfo(struct net_device *dev,
 863                             struct ethtool_drvinfo *info)
 864 {
 865         strcpy(info->driver, DRV_MODULE_NAME);
 866         strcpy(info->version, DRV_MODULE_VERSION);
 867 }
 868
 869 static int fs_get_regs_len(struct net_device *dev)
 870 {
 871         struct fs_enet_private *fep = netdev_priv(dev);
 872
 873         return (*fep->ops->get_regs_len)(dev);
 874 }
 875
 876 static void fs_get_regs(struct net_device *dev, struct ethtool_regs *regs,
 877                          void *p)
 878 {
 879         struct fs_enet_private *fep = netdev_priv(dev);
 880         unsigned long flags;
 881         int r, len;
 882
 883         len = regs->len;
 884
 885         spin_lock_irqsave(&fep->lock, flags);
 886         r = (*fep->ops->get_regs)(dev, p, &len);
 887         spin_unlock_irqrestore(&fep->lock, flags);
 888
 889         if (r == 0)
 890                 regs->version = 0;
 891 }
 892
 893 static int fs_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 894 {
 895         struct fs_enet_private *fep = netdev_priv(dev);
 896
 897         if (!fep->phydev)
 898                 return -ENODEV;
 899
 900         return phy_ethtool_gset(fep->phydev, cmd);
 901 }
 902
 903 static int fs_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 904 {
 905         struct fs_enet_private *fep = netdev_priv(dev);
 906
 907         if (!fep->phydev)
 908                 return -ENODEV;
 909
 910         return phy_ethtool_sset(fep->phydev, cmd);
 911 }
 912
 913 static int fs_nway_reset(struct net_device *dev)
 914 {
 915         return 0;
 916 }
 917
 918 static u32 fs_get_msglevel(struct net_device *dev)
 919 {
 920         struct fs_enet_private *fep = netdev_priv(dev);
 921         return fep->msg_enable;
 922 }
 923
 924 static void fs_set_msglevel(struct net_device *dev, u32 value)
 925 {
 926         struct fs_enet_private *fep = netdev_priv(dev);
 927         fep->msg_enable = value;
 928 }
 929
 930 static const struct ethtool_ops fs_ethtool_ops = {
 931         .get_drvinfo = fs_get_drvinfo,
 932         .get_regs_len = fs_get_regs_len,
 933         .get_settings = fs_get_settings,
 934         .set_settings = fs_set_settings,
 935         .nway_reset = fs_nway_reset,
 936         .get_link = ethtool_op_get_link,
 937         .get_msglevel = fs_get_msglevel,
 938         .set_msglevel = fs_set_msglevel,
 939         .set_tx_csum = ethtool_op_set_tx_csum,  /* local! */
 940         .set_sg = ethtool_op_set_sg,
 941         .get_regs = fs_get_regs,
 942 };
 943
 944 static int fs_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 945 {
 946         struct fs_enet_private *fep = netdev_priv(dev);
 947         struct mii_ioctl_data *mii = (struct mii_ioctl_data *)&rq->ifr_data;
 948
 949         if (!netif_running(dev))
 950                 return -EINVAL;
 951
 952         return phy_mii_ioctl(fep->phydev, mii, cmd);
 953 }
 954
 955 extern int fs_mii_connect(struct net_device *dev);
 956 extern void fs_mii_disconnect(struct net_device *dev);
 957
 958 #ifndef CONFIG_PPC_CPM_NEW_BINDING
 959 static struct net_device *fs_init_instance(struct device *dev,
 960                 struct fs_platform_info *fpi)
 961 {
 962         struct net_device *ndev = NULL;
 963         struct fs_enet_private *fep = NULL;
 964         int privsize, i, r, err = 0, registered = 0;
 965
 966         fpi->fs_no = fs_get_id(fpi);
 967         /* guard */
 968         if ((unsigned int)fpi->fs_no >= FS_MAX_INDEX)
 969                 return ERR_PTR(-EINVAL);
 970
 971         privsize = sizeof(*fep) + (sizeof(struct sk_buff **) *
 972                             (fpi->rx_ring + fpi->tx_ring));
 973
 974         ndev = alloc_etherdev(privsize);
 975         if (!ndev) {
 976                 err = -ENOMEM;
 977                 goto err;
 978         }
 979
 980         fep = netdev_priv(ndev);
 981
 982         fep->dev = dev;
 983         dev_set_drvdata(dev, ndev);
 984         fep->fpi = fpi;
 985         if (fpi->init_ioports)
 986                 fpi->init_ioports((struct fs_platform_info *)fpi);
 987
 988 #ifdef CONFIG_FS_ENET_HAS_FEC
 989         if (fs_get_fec_index(fpi->fs_no) >= 0)
 990                 fep->ops = &fs_fec_ops;
 991 #endif
 992
 993 #ifdef CONFIG_FS_ENET_HAS_SCC
 994         if (fs_get_scc_index(fpi->fs_no) >=0)
 995                 fep->ops = &fs_scc_ops;
 996 #endif
 997
 998 #ifdef CONFIG_FS_ENET_HAS_FCC
 999         if (fs_get_fcc_index(fpi->fs_no) >= 0)
1000                 fep->ops = &fs_fcc_ops;
1001 #endif
1002
1003         if (fep->ops == NULL) {
1004                 printk(KERN_ERR DRV_MODULE_NAME
1005                        ": %s No matching ops found (%d).\n",
1006                        ndev->name, fpi->fs_no);
1007                 err = -EINVAL;
1008                 goto err;
1009         }
1010
1011         r = (*fep->ops->setup_data)(ndev);
1012         if (r != 0) {
1013                 printk(KERN_ERR DRV_MODULE_NAME
1014                        ": %s setup_data failed\n",
1015                         ndev->name);
1016                 err = r;
1017                 goto err;
1018         }
1019
1020         /* point rx_skbuff, tx_skbuff */
1021         fep->rx_skbuff = (struct sk_buff **)&fep[1];
1022         fep->tx_skbuff = fep->rx_skbuff + fpi->rx_ring;
1023
1024         /* init locks */
1025         spin_lock_init(&fep->lock);
1026         spin_lock_init(&fep->tx_lock);
1027
1028         /*
1029          * Set the Ethernet address.
1030          */
1031         for (i = 0; i < 6; i++)
1032                 ndev->dev_addr[i] = fpi->macaddr[i];
1033
1034         r = (*fep->ops->allocate_bd)(ndev);
1035
1036         if (fep->ring_base == NULL) {
1037                 printk(KERN_ERR DRV_MODULE_NAME
1038                        ": %s buffer descriptor alloc failed (%d).\n", ndev->name, r);
1039                 err = r;
1040                 goto err;
1041         }
1042
1043         /*
1044          * Set receive and transmit descriptor base.
1045          */
1046         fep->rx_bd_base = fep->ring_base;
1047         fep->tx_bd_base = fep->rx_bd_base + fpi->rx_ring;
1048
1049         /* initialize ring size variables */
1050         fep->tx_ring = fpi->tx_ring;
1051         fep->rx_ring = fpi->rx_ring;
1052
1053         /*
1054          * The FEC Ethernet specific entries in the device structure.
1055          */
1056         ndev->open = fs_enet_open;
1057         ndev->hard_start_xmit = fs_enet_start_xmit;
1058         ndev->tx_timeout = fs_timeout;
1059         ndev->watchdog_timeo = 2 * HZ;
1060         ndev->stop = fs_enet_close;
1061         ndev->get_stats = fs_enet_get_stats;
1062         ndev->set_multicast_list = fs_set_multicast_list;
1063
1064 #ifdef CONFIG_NET_POLL_CONTROLLER
1065         ndev->poll_controller = fs_enet_netpoll;
1066 #endif
1067
1068         netif_napi_add(ndev, &fep->napi,
1069                        fs_enet_rx_napi, fpi->napi_weight);
1070
1071         ndev->ethtool_ops = &fs_ethtool_ops;
1072         ndev->do_ioctl = fs_ioctl;
1073
1074         init_timer(&fep->phy_timer_list);
1075
1076         netif_carrier_off(ndev);
1077
1078         err = register_netdev(ndev);
1079         if (err != 0) {
1080                 printk(KERN_ERR DRV_MODULE_NAME
1081                        ": %s register_netdev failed.\n", ndev->name);
1082                 goto err;
1083         }
1084         registered = 1;
1085
1086
1087         return ndev;
1088
1089 err:
1090         if (ndev != NULL) {
1091                 if (registered)
1092                         unregister_netdev(ndev);
1093
1094                 if (fep && fep->ops) {
1095                         (*fep->ops->free_bd)(ndev);
1096                         (*fep->ops->cleanup_data)(ndev);
1097                 }
1098
1099                 free_netdev(ndev);
1100         }
1101
1102         dev_set_drvdata(dev, NULL);
1103
1104         return ERR_PTR(err);
1105 }
1106
1107 static int fs_cleanup_instance(struct net_device *ndev)
1108 {
1109         struct fs_enet_private *fep;
1110         const struct fs_platform_info *fpi;
1111         struct device *dev;
1112
1113         if (ndev == NULL)
1114                 return -EINVAL;
1115
1116         fep = netdev_priv(ndev);
1117         if (fep == NULL)
1118                 return -EINVAL;
1119
1120         fpi = fep->fpi;
1121
1122         unregister_netdev(ndev);
1123
1124         dma_free_coherent(fep->dev, (fpi->tx_ring + fpi->rx_ring) * sizeof(cbd_t),
1125                           (void __force *)fep->ring_base, fep->ring_mem_addr);
1126
1127         /* reset it */
1128         (*fep->ops->cleanup_data)(ndev);
1129
1130         dev = fep->dev;
1131         if (dev != NULL) {
1132                 dev_set_drvdata(dev, NULL);
1133                 fep->dev = NULL;
1134         }
1135
1136         free_netdev(ndev);
1137
1138         return 0;
1139 }
1140 #endif
1141
1142 /**************************************************************************************/
1143
1144 /* handy pointer to the immap */
1145 void __iomem *fs_enet_immap = NULL;
1146
1147 static int setup_immap(void)
1148 {
1149 #ifdef CONFIG_CPM1
1150         fs_enet_immap = ioremap(IMAP_ADDR, 0x4000);
1151         WARN_ON(!fs_enet_immap);
1152 #elif defined(CONFIG_CPM2)
1153         fs_enet_immap = cpm2_immr;
1154 #endif
1155
1156         return 0;
1157 }
1158
1159 static void cleanup_immap(void)
1160 {
1161 #if defined(CONFIG_CPM1)
1162         iounmap(fs_enet_immap);
1163 #endif
1164 }
1165
1166 /**************************************************************************************/
1167
1168 #ifdef CONFIG_PPC_CPM_NEW_BINDING
1169 static int __devinit find_phy(struct device_node *np,
1170                               struct fs_platform_info *fpi)
1171 {
1172         struct device_node *phynode, *mdionode;
1173         int ret = 0, len, bus_id;
1174         const u32 *data;
1175
1176         data  = of_get_property(np, "fixed-link", NULL);
1177         if (data) {
1178                 snprintf(fpi->bus_id, 16, "%x:%02x", 0, *data);
1179                 return 0;
1180         }
1181
1182         data = of_get_property(np, "phy-handle", &len);
1183         if (!data || len != 4)
1184                 return -EINVAL;
1185
1186         phynode = of_find_node_by_phandle(*data);
1187         if (!phynode)
1188                 return -EINVAL;
1189
1190         data = of_get_property(phynode, "reg", &len);
1191         if (!data || len != 4) {
1192                 ret = -EINVAL;
1193                 goto out_put_phy;
1194         }
1195
1196         mdionode = of_get_parent(phynode);
1197         if (!mdionode) {
1198                 ret = -EINVAL;
1199                 goto out_put_phy;
1200         }
1201
1202         bus_id = of_get_gpio(mdionode, 0);
1203         if (bus_id < 0) {
1204                 struct resource res;
1205                 ret = of_address_to_resource(mdionode, 0, &res);
1206                 if (ret)
1207                         goto out_put_mdio;
1208                 bus_id = res.start;
1209         }
1210
1211         snprintf(fpi->bus_id, 16, "%x:%02x", bus_id, *data);
1212
1213 out_put_mdio:
1214         of_node_put(mdionode);
1215 out_put_phy:
1216         of_node_put(phynode);
1217         return ret;
1218 }
1219
1220 #ifdef CONFIG_FS_ENET_HAS_FEC
1221 #define IS_FEC(match) ((match)->data == &fs_fec_ops)
1222 #else
1223 #define IS_FEC(match) 0
1224 #endif
1225
1226 static int __devinit fs_enet_probe(struct of_device *ofdev,
1227                                    const struct of_device_id *match)
1228 {
1229         struct net_device *ndev;
1230         struct fs_enet_private *fep;
1231         struct fs_platform_info *fpi;
1232         const u32 *data;
1233         const u8 *mac_addr;
1234         int privsize, len, ret = -ENODEV;
1235
1236         fpi = kzalloc(sizeof(*fpi), GFP_KERNEL);
1237         if (!fpi)
1238                 return -ENOMEM;
1239
1240         if (!IS_FEC(match)) {
1241                 data = of_get_property(ofdev->node, "fsl,cpm-command", &len);
1242                 if (!data || len != 4)
1243                         goto out_free_fpi;
1244
1245                 fpi->cp_command = *data;
1246         }
1247
1248         fpi->rx_ring = 32;
1249         fpi->tx_ring = 32;
1250         fpi->rx_copybreak = 240;
1251         fpi->use_napi = 1;
1252         fpi->napi_weight = 17;
1253
1254         ret = find_phy(ofdev->node, fpi);
1255         if (ret)
1256                 goto out_free_fpi;
1257
1258         privsize = sizeof(*fep) +
1259                    sizeof(struct sk_buff **) *
1260                    (fpi->rx_ring + fpi->tx_ring);
1261
1262         ndev = alloc_etherdev(privsize);
1263         if (!ndev) {
1264                 ret = -ENOMEM;
1265                 goto out_free_fpi;
1266         }
1267
1268         dev_set_drvdata(&ofdev->dev, ndev);
1269
1270         fep = netdev_priv(ndev);
1271         fep->dev = &ofdev->dev;
1272         fep->ndev = ndev;
1273         fep->fpi = fpi;
1274         fep->ops = match->data;
1275
1276         ret = fep->ops->setup_data(ndev);
1277         if (ret)
1278                 goto out_free_dev;
1279
1280         fep->rx_skbuff = (struct sk_buff **)&fep[1];
1281         fep->tx_skbuff = fep->rx_skbuff + fpi->rx_ring;
1282
1283         spin_lock_init(&fep->lock);
1284         spin_lock_init(&fep->tx_lock);
1285
1286         mac_addr = of_get_mac_address(ofdev->node);
1287         if (mac_addr)
1288                 memcpy(ndev->dev_addr, mac_addr, 6);
1289
1290         ret = fep->ops->allocate_bd(ndev);
1291         if (ret)
1292                 goto out_cleanup_data;
1293
1294         fep->rx_bd_base = fep->ring_base;
1295         fep->tx_bd_base = fep->rx_bd_base + fpi->rx_ring;
1296
1297         fep->tx_ring = fpi->tx_ring;
1298         fep->rx_ring = fpi->rx_ring;
1299
1300         ndev->open = fs_enet_open;
1301         ndev->hard_start_xmit = fs_enet_start_xmit;
1302         ndev->tx_timeout = fs_timeout;
1303         ndev->watchdog_timeo = 2 * HZ;
1304         ndev->stop = fs_enet_close;
1305         ndev->get_stats = fs_enet_get_stats;
1306         ndev->set_multicast_list = fs_set_multicast_list;
1307
1308         if (fpi->use_napi)
1309                 netif_napi_add(ndev, &fep->napi, fs_enet_rx_napi,
1310                                fpi->napi_weight);
1311
1312         ndev->ethtool_ops = &fs_ethtool_ops;
1313         ndev->do_ioctl = fs_ioctl;
1314
1315         init_timer(&fep->phy_timer_list);
1316
1317         netif_carrier_off(ndev);
1318
1319         ret = register_netdev(ndev);
1320         if (ret)
1321                 goto out_free_bd;
1322
1323         printk(KERN_INFO "%s: fs_enet: %02x:%02x:%02x:%02x:%02x:%02x\n",
1324                ndev->name,
1325                ndev->dev_addr[0], ndev->dev_addr[1], ndev->dev_addr[2],
1326                ndev->dev_addr[3], ndev->dev_addr[4], ndev->dev_addr[5]);
1327
1328         return 0;
1329
1330 out_free_bd:
1331         fep->ops->free_bd(ndev);
1332 out_cleanup_data:
1333         fep->ops->cleanup_data(ndev);
1334 out_free_dev:
1335         free_netdev(ndev);
1336         dev_set_drvdata(&ofdev->dev, NULL);
1337 out_free_fpi:
1338         kfree(fpi);
1339         return ret;
1340 }
1341
1342 static int fs_enet_remove(struct of_device *ofdev)
1343 {
1344         struct net_device *ndev = dev_get_drvdata(&ofdev->dev);
1345         struct fs_enet_private *fep = netdev_priv(ndev);
1346
1347         unregister_netdev(ndev);
1348
1349         fep->ops->free_bd(ndev);
1350         fep->ops->cleanup_data(ndev);
1351         dev_set_drvdata(fep->dev, NULL);
1352
1353         free_netdev(ndev);
1354         return 0;
1355 }
1356
1357 static struct of_device_id fs_enet_match[] = {
1358 #ifdef CONFIG_FS_ENET_HAS_SCC
1359         {
1360                 .compatible = "fsl,cpm1-scc-enet",
1361                 .data = (void *)&fs_scc_ops,
1362         },
1363 #endif
1364 #ifdef CONFIG_FS_ENET_HAS_FCC
1365         {
1366                 .compatible = "fsl,cpm2-fcc-enet",
1367                 .data = (void *)&fs_fcc_ops,
1368         },
1369 #endif
1370 #ifdef CONFIG_FS_ENET_HAS_FEC
1371         {
1372                 .compatible = "fsl,pq1-fec-enet",
1373                 .data = (void *)&fs_fec_ops,
1374         },
1375 #endif
1376         {}
1377 };
1378
1379 static struct of_platform_driver fs_enet_driver = {
1380         .name   = "fs_enet",
1381         .match_table = fs_enet_match,
1382         .probe = fs_enet_probe,
1383         .remove = fs_enet_remove,
1384 };
1385
1386 static int __init fs_init(void)
1387 {
1388         int r = setup_immap();
1389         if (r != 0)
1390                 return r;
1391
1392         r = of_register_platform_driver(&fs_enet_driver);
1393         if (r != 0)
1394                 goto out;
1395
1396         return 0;
1397
1398 out:
1399         cleanup_immap();
1400         return r;
1401 }
1402
1403 static void __exit fs_cleanup(void)
1404 {
1405         of_unregister_platform_driver(&fs_enet_driver);
1406         cleanup_immap();
1407 }
1408 #else
1409 static int __devinit fs_enet_probe(struct device *dev)
1410 {
1411         struct net_device *ndev;
1412
1413         /* no fixup - no device */
1414         if (dev->platform_data == NULL) {
1415                 printk(KERN_INFO "fs_enet: "
1416                                 "probe called with no platform data; "
1417                                 "remove unused devices\n");
1418                 return -ENODEV;
1419         }
1420
1421         ndev = fs_init_instance(dev, dev->platform_data);
1422         if (IS_ERR(ndev))
1423                 return PTR_ERR(ndev);
1424         return 0;
1425 }
1426
1427 static int fs_enet_remove(struct device *dev)
1428 {
1429         return fs_cleanup_instance(dev_get_drvdata(dev));
1430 }
1431
1432 static struct device_driver fs_enet_fec_driver = {
1433         .name           = "fsl-cpm-fec",
1434         .bus            = &platform_bus_type,
1435         .probe          = fs_enet_probe,
1436         .remove         = fs_enet_remove,
1437 #ifdef CONFIG_PM
1438 /*      .suspend        = fs_enet_suspend,      TODO */
1439 /*      .resume         = fs_enet_resume,       TODO */
1440 #endif
1441 };
1442
1443 static struct device_driver fs_enet_scc_driver = {
1444         .name           = "fsl-cpm-scc",
1445         .bus            = &platform_bus_type,
1446         .probe          = fs_enet_probe,
1447         .remove         = fs_enet_remove,
1448 #ifdef CONFIG_PM
1449 /*      .suspend        = fs_enet_suspend,      TODO */
1450 /*      .resume         = fs_enet_resume,       TODO */
1451 #endif
1452 };
1453
1454 static struct device_driver fs_enet_fcc_driver = {
1455         .name           = "fsl-cpm-fcc",
1456         .bus            = &platform_bus_type,
1457         .probe          = fs_enet_probe,
1458         .remove         = fs_enet_remove,
1459 #ifdef CONFIG_PM
1460 /*      .suspend        = fs_enet_suspend,      TODO */
1461 /*      .resume         = fs_enet_resume,       TODO */
1462 #endif
1463 };
1464
1465 static int __init fs_init(void)
1466 {
1467         int r;
1468
1469         printk(KERN_INFO
1470                         "%s", version);
1471
1472         r = setup_immap();
1473         if (r != 0)
1474                 return r;
1475
1476 #ifdef CONFIG_FS_ENET_HAS_FCC
1477         /* let's insert mii stuff */
1478         r = fs_enet_mdio_bb_init();
1479
1480         if (r != 0) {
1481                 printk(KERN_ERR DRV_MODULE_NAME
1482                         "BB PHY init failed.\n");
1483                 return r;
1484         }
1485         r = driver_register(&fs_enet_fcc_driver);
1486         if (r != 0)
1487                 goto err;
1488 #endif
1489
1490 #ifdef CONFIG_FS_ENET_HAS_FEC
1491         r =  fs_enet_mdio_fec_init();
1492         if (r != 0) {
1493                 printk(KERN_ERR DRV_MODULE_NAME
1494                         "FEC PHY init failed.\n");
1495                 return r;
1496         }
1497
1498         r = driver_register(&fs_enet_fec_driver);
1499         if (r != 0)
1500                 goto err;
1501 #endif
1502
1503 #ifdef CONFIG_FS_ENET_HAS_SCC
1504         r = driver_register(&fs_enet_scc_driver);
1505         if (r != 0)
1506                 goto err;
1507 #endif
1508
1509         return 0;
1510 err:
1511         cleanup_immap();
1512         return r;
1513 }
1514
1515 static void __exit fs_cleanup(void)
1516 {
1517         driver_unregister(&fs_enet_fec_driver);
1518         driver_unregister(&fs_enet_fcc_driver);
1519         driver_unregister(&fs_enet_scc_driver);
1520         cleanup_immap();
1521 }
1522 #endif
1523
1524 #ifdef CONFIG_NET_POLL_CONTROLLER
1525 static void fs_enet_netpoll(struct net_device *dev)
1526 {
1527        disable_irq(dev->irq);
1528        fs_enet_interrupt(dev->irq, dev, NULL);
1529        enable_irq(dev->irq);
1530 }
1531 #endif
1532
1533 /**************************************************************************************/
1534
1535 module_init(fs_init);
1536 module_exit(fs_cleanup);