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                         netif_tx_schedule_all(dev);
 742                         netif_carrier_on(dev);
 743                         netif_start_queue(dev);
 744                 }
 745
 746                 if (new_state)
 747                         fep->ops->restart(dev);
 748         } else if (fep->oldlink) {
 749                 new_state = 1;
 750                 fep->oldlink = 0;
 751                 fep->oldspeed = 0;
 752                 fep->oldduplex = -1;
 753                 netif_carrier_off(dev);
 754                 netif_stop_queue(dev);
 755         }
 756
 757         if (new_state && netif_msg_link(fep))
 758                 phy_print_status(phydev);
 759 }
 760
 761
 762 static void fs_adjust_link(struct net_device *dev)
 763 {
 764         struct fs_enet_private *fep = netdev_priv(dev);
 765         unsigned long flags;
 766
 767         spin_lock_irqsave(&fep->lock, flags);
 768
 769         if(fep->ops->adjust_link)
 770                 fep->ops->adjust_link(dev);
 771         else
 772                 generic_adjust_link(dev);
 773
 774         spin_unlock_irqrestore(&fep->lock, flags);
 775 }
 776
 777 static int fs_init_phy(struct net_device *dev)
 778 {
 779         struct fs_enet_private *fep = netdev_priv(dev);
 780         struct phy_device *phydev;
 781
 782         fep->oldlink = 0;
 783         fep->oldspeed = 0;
 784         fep->oldduplex = -1;
 785         if(fep->fpi->bus_id)
 786                 phydev = phy_connect(dev, fep->fpi->bus_id, &fs_adjust_link, 0,
 787                                 PHY_INTERFACE_MODE_MII);
 788         else {
 789                 printk("No phy bus ID specified in BSP code\n");
 790                 return -EINVAL;
 791         }
 792         if (IS_ERR(phydev)) {
 793                 printk(KERN_ERR "%s: Could not attach to PHY\n", dev->name);
 794                 return PTR_ERR(phydev);
 795         }
 796
 797         fep->phydev = phydev;
 798
 799         return 0;
 800 }
 801
 802 static int fs_enet_open(struct net_device *dev)
 803 {
 804         struct fs_enet_private *fep = netdev_priv(dev);
 805         int r;
 806         int err;
 807
 808         if (fep->fpi->use_napi)
 809                 napi_enable(&fep->napi);
 810
 811         /* Install our interrupt handler. */
 812         r = fs_request_irq(dev, fep->interrupt, "fs_enet-mac", fs_enet_interrupt);
 813         if (r != 0) {
 814                 printk(KERN_ERR DRV_MODULE_NAME
 815                        ": %s Could not allocate FS_ENET IRQ!", dev->name);
 816                 if (fep->fpi->use_napi)
 817                         napi_disable(&fep->napi);
 818                 return -EINVAL;
 819         }
 820
 821         err = fs_init_phy(dev);
 822         if (err) {
 823                 if (fep->fpi->use_napi)
 824                         napi_disable(&fep->napi);
 825                 return err;
 826         }
 827         phy_start(fep->phydev);
 828
 829         return 0;
 830 }
 831
 832 static int fs_enet_close(struct net_device *dev)
 833 {
 834         struct fs_enet_private *fep = netdev_priv(dev);
 835         unsigned long flags;
 836
 837         netif_stop_queue(dev);
 838         netif_carrier_off(dev);
 839         if (fep->fpi->use_napi)
 840                 napi_disable(&fep->napi);
 841         phy_stop(fep->phydev);
 842
 843         spin_lock_irqsave(&fep->lock, flags);
 844         spin_lock(&fep->tx_lock);
 845         (*fep->ops->stop)(dev);
 846         spin_unlock(&fep->tx_lock);
 847         spin_unlock_irqrestore(&fep->lock, flags);
 848
 849         /* release any irqs */
 850         phy_disconnect(fep->phydev);
 851         fep->phydev = NULL;
 852         fs_free_irq(dev, fep->interrupt);
 853
 854         return 0;
 855 }
 856
 857 static struct net_device_stats *fs_enet_get_stats(struct net_device *dev)
 858 {
 859         struct fs_enet_private *fep = netdev_priv(dev);
 860         return &fep->stats;
 861 }
 862
 863 /*************************************************************************/
 864
 865 static void fs_get_drvinfo(struct net_device *dev,
 866                             struct ethtool_drvinfo *info)
 867 {
 868         strcpy(info->driver, DRV_MODULE_NAME);
 869         strcpy(info->version, DRV_MODULE_VERSION);
 870 }
 871
 872 static int fs_get_regs_len(struct net_device *dev)
 873 {
 874         struct fs_enet_private *fep = netdev_priv(dev);
 875
 876         return (*fep->ops->get_regs_len)(dev);
 877 }
 878
 879 static void fs_get_regs(struct net_device *dev, struct ethtool_regs *regs,
 880                          void *p)
 881 {
 882         struct fs_enet_private *fep = netdev_priv(dev);
 883         unsigned long flags;
 884         int r, len;
 885
 886         len = regs->len;
 887
 888         spin_lock_irqsave(&fep->lock, flags);
 889         r = (*fep->ops->get_regs)(dev, p, &len);
 890         spin_unlock_irqrestore(&fep->lock, flags);
 891
 892         if (r == 0)
 893                 regs->version = 0;
 894 }
 895
 896 static int fs_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 897 {
 898         struct fs_enet_private *fep = netdev_priv(dev);
 899
 900         if (!fep->phydev)
 901                 return -ENODEV;
 902
 903         return phy_ethtool_gset(fep->phydev, cmd);
 904 }
 905
 906 static int fs_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 907 {
 908         struct fs_enet_private *fep = netdev_priv(dev);
 909
 910         if (!fep->phydev)
 911                 return -ENODEV;
 912
 913         return phy_ethtool_sset(fep->phydev, cmd);
 914 }
 915
 916 static int fs_nway_reset(struct net_device *dev)
 917 {
 918         return 0;
 919 }
 920
 921 static u32 fs_get_msglevel(struct net_device *dev)
 922 {
 923         struct fs_enet_private *fep = netdev_priv(dev);
 924         return fep->msg_enable;
 925 }
 926
 927 static void fs_set_msglevel(struct net_device *dev, u32 value)
 928 {
 929         struct fs_enet_private *fep = netdev_priv(dev);
 930         fep->msg_enable = value;
 931 }
 932
 933 static const struct ethtool_ops fs_ethtool_ops = {
 934         .get_drvinfo = fs_get_drvinfo,
 935         .get_regs_len = fs_get_regs_len,
 936         .get_settings = fs_get_settings,
 937         .set_settings = fs_set_settings,
 938         .nway_reset = fs_nway_reset,
 939         .get_link = ethtool_op_get_link,
 940         .get_msglevel = fs_get_msglevel,
 941         .set_msglevel = fs_set_msglevel,
 942         .set_tx_csum = ethtool_op_set_tx_csum,  /* local! */
 943         .set_sg = ethtool_op_set_sg,
 944         .get_regs = fs_get_regs,
 945 };
 946
 947 static int fs_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 948 {
 949         struct fs_enet_private *fep = netdev_priv(dev);
 950         struct mii_ioctl_data *mii = (struct mii_ioctl_data *)&rq->ifr_data;
 951
 952         if (!netif_running(dev))
 953                 return -EINVAL;
 954
 955         return phy_mii_ioctl(fep->phydev, mii, cmd);
 956 }
 957
 958 extern int fs_mii_connect(struct net_device *dev);
 959 extern void fs_mii_disconnect(struct net_device *dev);
 960
 961 #ifndef CONFIG_PPC_CPM_NEW_BINDING
 962 static struct net_device *fs_init_instance(struct device *dev,
 963                 struct fs_platform_info *fpi)
 964 {
 965         struct net_device *ndev = NULL;
 966         struct fs_enet_private *fep = NULL;
 967         int privsize, i, r, err = 0, registered = 0;
 968
 969         fpi->fs_no = fs_get_id(fpi);
 970         /* guard */
 971         if ((unsigned int)fpi->fs_no >= FS_MAX_INDEX)
 972                 return ERR_PTR(-EINVAL);
 973
 974         privsize = sizeof(*fep) + (sizeof(struct sk_buff **) *
 975                             (fpi->rx_ring + fpi->tx_ring));
 976
 977         ndev = alloc_etherdev(privsize);
 978         if (!ndev) {
 979                 err = -ENOMEM;
 980                 goto err;
 981         }
 982
 983         fep = netdev_priv(ndev);
 984
 985         fep->dev = dev;
 986         dev_set_drvdata(dev, ndev);
 987         fep->fpi = fpi;
 988         if (fpi->init_ioports)
 989                 fpi->init_ioports((struct fs_platform_info *)fpi);
 990
 991 #ifdef CONFIG_FS_ENET_HAS_FEC
 992         if (fs_get_fec_index(fpi->fs_no) >= 0)
 993                 fep->ops = &fs_fec_ops;
 994 #endif
 995
 996 #ifdef CONFIG_FS_ENET_HAS_SCC
 997         if (fs_get_scc_index(fpi->fs_no) >=0)
 998                 fep->ops = &fs_scc_ops;
 999 #endif
1000
1001 #ifdef CONFIG_FS_ENET_HAS_FCC
1002         if (fs_get_fcc_index(fpi->fs_no) >= 0)
1003                 fep->ops = &fs_fcc_ops;
1004 #endif
1005
1006         if (fep->ops == NULL) {
1007                 printk(KERN_ERR DRV_MODULE_NAME
1008                        ": %s No matching ops found (%d).\n",
1009                        ndev->name, fpi->fs_no);
1010                 err = -EINVAL;
1011                 goto err;
1012         }
1013
1014         r = (*fep->ops->setup_data)(ndev);
1015         if (r != 0) {
1016                 printk(KERN_ERR DRV_MODULE_NAME
1017                        ": %s setup_data failed\n",
1018                         ndev->name);
1019                 err = r;
1020                 goto err;
1021         }
1022
1023         /* point rx_skbuff, tx_skbuff */
1024         fep->rx_skbuff = (struct sk_buff **)&fep[1];
1025         fep->tx_skbuff = fep->rx_skbuff + fpi->rx_ring;
1026
1027         /* init locks */
1028         spin_lock_init(&fep->lock);
1029         spin_lock_init(&fep->tx_lock);
1030
1031         /*
1032          * Set the Ethernet address.
1033          */
1034         for (i = 0; i < 6; i++)
1035                 ndev->dev_addr[i] = fpi->macaddr[i];
1036
1037         r = (*fep->ops->allocate_bd)(ndev);
1038
1039         if (fep->ring_base == NULL) {
1040                 printk(KERN_ERR DRV_MODULE_NAME
1041                        ": %s buffer descriptor alloc failed (%d).\n", ndev->name, r);
1042                 err = r;
1043                 goto err;
1044         }
1045
1046         /*
1047          * Set receive and transmit descriptor base.
1048          */
1049         fep->rx_bd_base = fep->ring_base;
1050         fep->tx_bd_base = fep->rx_bd_base + fpi->rx_ring;
1051
1052         /* initialize ring size variables */
1053         fep->tx_ring = fpi->tx_ring;
1054         fep->rx_ring = fpi->rx_ring;
1055
1056         /*
1057          * The FEC Ethernet specific entries in the device structure.
1058          */
1059         ndev->open = fs_enet_open;
1060         ndev->hard_start_xmit = fs_enet_start_xmit;
1061         ndev->tx_timeout = fs_timeout;
1062         ndev->watchdog_timeo = 2 * HZ;
1063         ndev->stop = fs_enet_close;
1064         ndev->get_stats = fs_enet_get_stats;
1065         ndev->set_multicast_list = fs_set_multicast_list;
1066
1067 #ifdef CONFIG_NET_POLL_CONTROLLER
1068         ndev->poll_controller = fs_enet_netpoll;
1069 #endif
1070
1071         netif_napi_add(ndev, &fep->napi,
1072                        fs_enet_rx_napi, fpi->napi_weight);
1073
1074         ndev->ethtool_ops = &fs_ethtool_ops;
1075         ndev->do_ioctl = fs_ioctl;
1076
1077         init_timer(&fep->phy_timer_list);
1078
1079         netif_carrier_off(ndev);
1080
1081         err = register_netdev(ndev);
1082         if (err != 0) {
1083                 printk(KERN_ERR DRV_MODULE_NAME
1084                        ": %s register_netdev failed.\n", ndev->name);
1085                 goto err;
1086         }
1087         registered = 1;
1088
1089
1090         return ndev;
1091
1092 err:
1093         if (ndev != NULL) {
1094                 if (registered)
1095                         unregister_netdev(ndev);
1096
1097                 if (fep && fep->ops) {
1098                         (*fep->ops->free_bd)(ndev);
1099                         (*fep->ops->cleanup_data)(ndev);
1100                 }
1101
1102                 free_netdev(ndev);
1103         }
1104
1105         dev_set_drvdata(dev, NULL);
1106
1107         return ERR_PTR(err);
1108 }
1109
1110 static int fs_cleanup_instance(struct net_device *ndev)
1111 {
1112         struct fs_enet_private *fep;
1113         const struct fs_platform_info *fpi;
1114         struct device *dev;
1115
1116         if (ndev == NULL)
1117                 return -EINVAL;
1118
1119         fep = netdev_priv(ndev);
1120         if (fep == NULL)
1121                 return -EINVAL;
1122
1123         fpi = fep->fpi;
1124
1125         unregister_netdev(ndev);
1126
1127         dma_free_coherent(fep->dev, (fpi->tx_ring + fpi->rx_ring) * sizeof(cbd_t),
1128                           (void __force *)fep->ring_base, fep->ring_mem_addr);
1129
1130         /* reset it */
1131         (*fep->ops->cleanup_data)(ndev);
1132
1133         dev = fep->dev;
1134         if (dev != NULL) {
1135                 dev_set_drvdata(dev, NULL);
1136                 fep->dev = NULL;
1137         }
1138
1139         free_netdev(ndev);
1140
1141         return 0;
1142 }
1143 #endif
1144
1145 /**************************************************************************************/
1146
1147 /* handy pointer to the immap */
1148 void __iomem *fs_enet_immap = NULL;
1149
1150 static int setup_immap(void)
1151 {
1152 #ifdef CONFIG_CPM1
1153         fs_enet_immap = ioremap(IMAP_ADDR, 0x4000);
1154         WARN_ON(!fs_enet_immap);
1155 #elif defined(CONFIG_CPM2)
1156         fs_enet_immap = cpm2_immr;
1157 #endif
1158
1159         return 0;
1160 }
1161
1162 static void cleanup_immap(void)
1163 {
1164 #if defined(CONFIG_CPM1)
1165         iounmap(fs_enet_immap);
1166 #endif
1167 }
1168
1169 /**************************************************************************************/
1170
1171 #ifdef CONFIG_PPC_CPM_NEW_BINDING
1172 static int __devinit find_phy(struct device_node *np,
1173                               struct fs_platform_info *fpi)
1174 {
1175         struct device_node *phynode, *mdionode;
1176         int ret = 0, len, bus_id;
1177         const u32 *data;
1178
1179         data  = of_get_property(np, "fixed-link", NULL);
1180         if (data) {
1181                 snprintf(fpi->bus_id, 16, "%x:%02x", 0, *data);
1182                 return 0;
1183         }
1184
1185         data = of_get_property(np, "phy-handle", &len);
1186         if (!data || len != 4)
1187                 return -EINVAL;
1188
1189         phynode = of_find_node_by_phandle(*data);
1190         if (!phynode)
1191                 return -EINVAL;
1192
1193         data = of_get_property(phynode, "reg", &len);
1194         if (!data || len != 4) {
1195                 ret = -EINVAL;
1196                 goto out_put_phy;
1197         }
1198
1199         mdionode = of_get_parent(phynode);
1200         if (!mdionode) {
1201                 ret = -EINVAL;
1202                 goto out_put_phy;
1203         }
1204
1205         bus_id = of_get_gpio(mdionode, 0);
1206         if (bus_id < 0) {
1207                 struct resource res;
1208                 ret = of_address_to_resource(mdionode, 0, &res);
1209                 if (ret)
1210                         goto out_put_mdio;
1211                 bus_id = res.start;
1212         }
1213
1214         snprintf(fpi->bus_id, 16, "%x:%02x", bus_id, *data);
1215
1216 out_put_mdio:
1217         of_node_put(mdionode);
1218 out_put_phy:
1219         of_node_put(phynode);
1220         return ret;
1221 }
1222
1223 #ifdef CONFIG_FS_ENET_HAS_FEC
1224 #define IS_FEC(match) ((match)->data == &fs_fec_ops)
1225 #else
1226 #define IS_FEC(match) 0
1227 #endif
1228
1229 static int __devinit fs_enet_probe(struct of_device *ofdev,
1230                                    const struct of_device_id *match)
1231 {
1232         struct net_device *ndev;
1233         struct fs_enet_private *fep;
1234         struct fs_platform_info *fpi;
1235         const u32 *data;
1236         const u8 *mac_addr;
1237         int privsize, len, ret = -ENODEV;
1238
1239         fpi = kzalloc(sizeof(*fpi), GFP_KERNEL);
1240         if (!fpi)
1241                 return -ENOMEM;
1242
1243         if (!IS_FEC(match)) {
1244                 data = of_get_property(ofdev->node, "fsl,cpm-command", &len);
1245                 if (!data || len != 4)
1246                         goto out_free_fpi;
1247
1248                 fpi->cp_command = *data;
1249         }
1250
1251         fpi->rx_ring = 32;
1252         fpi->tx_ring = 32;
1253         fpi->rx_copybreak = 240;
1254         fpi->use_napi = 1;
1255         fpi->napi_weight = 17;
1256
1257         ret = find_phy(ofdev->node, fpi);
1258         if (ret)
1259                 goto out_free_fpi;
1260
1261         privsize = sizeof(*fep) +
1262                    sizeof(struct sk_buff **) *
1263                    (fpi->rx_ring + fpi->tx_ring);
1264
1265         ndev = alloc_etherdev(privsize);
1266         if (!ndev) {
1267                 ret = -ENOMEM;
1268                 goto out_free_fpi;
1269         }
1270
1271         dev_set_drvdata(&ofdev->dev, ndev);
1272
1273         fep = netdev_priv(ndev);
1274         fep->dev = &ofdev->dev;
1275         fep->ndev = ndev;
1276         fep->fpi = fpi;
1277         fep->ops = match->data;
1278
1279         ret = fep->ops->setup_data(ndev);
1280         if (ret)
1281                 goto out_free_dev;
1282
1283         fep->rx_skbuff = (struct sk_buff **)&fep[1];
1284         fep->tx_skbuff = fep->rx_skbuff + fpi->rx_ring;
1285
1286         spin_lock_init(&fep->lock);
1287         spin_lock_init(&fep->tx_lock);
1288
1289         mac_addr = of_get_mac_address(ofdev->node);
1290         if (mac_addr)
1291                 memcpy(ndev->dev_addr, mac_addr, 6);
1292
1293         ret = fep->ops->allocate_bd(ndev);
1294         if (ret)
1295                 goto out_cleanup_data;
1296
1297         fep->rx_bd_base = fep->ring_base;
1298         fep->tx_bd_base = fep->rx_bd_base + fpi->rx_ring;
1299
1300         fep->tx_ring = fpi->tx_ring;
1301         fep->rx_ring = fpi->rx_ring;
1302
1303         ndev->open = fs_enet_open;
1304         ndev->hard_start_xmit = fs_enet_start_xmit;
1305         ndev->tx_timeout = fs_timeout;
1306         ndev->watchdog_timeo = 2 * HZ;
1307         ndev->stop = fs_enet_close;
1308         ndev->get_stats = fs_enet_get_stats;
1309         ndev->set_multicast_list = fs_set_multicast_list;
1310
1311         if (fpi->use_napi)
1312                 netif_napi_add(ndev, &fep->napi, fs_enet_rx_napi,
1313                                fpi->napi_weight);
1314
1315         ndev->ethtool_ops = &fs_ethtool_ops;
1316         ndev->do_ioctl = fs_ioctl;
1317
1318         init_timer(&fep->phy_timer_list);
1319
1320         netif_carrier_off(ndev);
1321
1322         ret = register_netdev(ndev);
1323         if (ret)
1324                 goto out_free_bd;
1325
1326         printk(KERN_INFO "%s: fs_enet: %02x:%02x:%02x:%02x:%02x:%02x\n",
1327                ndev->name,
1328                ndev->dev_addr[0], ndev->dev_addr[1], ndev->dev_addr[2],
1329                ndev->dev_addr[3], ndev->dev_addr[4], ndev->dev_addr[5]);
1330
1331         return 0;
1332
1333 out_free_bd:
1334         fep->ops->free_bd(ndev);
1335 out_cleanup_data:
1336         fep->ops->cleanup_data(ndev);
1337 out_free_dev:
1338         free_netdev(ndev);
1339         dev_set_drvdata(&ofdev->dev, NULL);
1340 out_free_fpi:
1341         kfree(fpi);
1342         return ret;
1343 }
1344
1345 static int fs_enet_remove(struct of_device *ofdev)
1346 {
1347         struct net_device *ndev = dev_get_drvdata(&ofdev->dev);
1348         struct fs_enet_private *fep = netdev_priv(ndev);
1349
1350         unregister_netdev(ndev);
1351
1352         fep->ops->free_bd(ndev);
1353         fep->ops->cleanup_data(ndev);
1354         dev_set_drvdata(fep->dev, NULL);
1355
1356         free_netdev(ndev);
1357         return 0;
1358 }
1359
1360 static struct of_device_id fs_enet_match[] = {
1361 #ifdef CONFIG_FS_ENET_HAS_SCC
1362         {
1363                 .compatible = "fsl,cpm1-scc-enet",
1364                 .data = (void *)&fs_scc_ops,
1365         },
1366 #endif
1367 #ifdef CONFIG_FS_ENET_HAS_FCC
1368         {
1369                 .compatible = "fsl,cpm2-fcc-enet",
1370                 .data = (void *)&fs_fcc_ops,
1371         },
1372 #endif
1373 #ifdef CONFIG_FS_ENET_HAS_FEC
1374         {
1375                 .compatible = "fsl,pq1-fec-enet",
1376                 .data = (void *)&fs_fec_ops,
1377         },
1378 #endif
1379         {}
1380 };
1381
1382 static struct of_platform_driver fs_enet_driver = {
1383         .name   = "fs_enet",
1384         .match_table = fs_enet_match,
1385         .probe = fs_enet_probe,
1386         .remove = fs_enet_remove,
1387 };
1388
1389 static int __init fs_init(void)
1390 {
1391         int r = setup_immap();
1392         if (r != 0)
1393                 return r;
1394
1395         r = of_register_platform_driver(&fs_enet_driver);
1396         if (r != 0)
1397                 goto out;
1398
1399         return 0;
1400
1401 out:
1402         cleanup_immap();
1403         return r;
1404 }
1405
1406 static void __exit fs_cleanup(void)
1407 {
1408         of_unregister_platform_driver(&fs_enet_driver);
1409         cleanup_immap();
1410 }
1411 #else
1412 static int __devinit fs_enet_probe(struct device *dev)
1413 {
1414         struct net_device *ndev;
1415
1416         /* no fixup - no device */
1417         if (dev->platform_data == NULL) {
1418                 printk(KERN_INFO "fs_enet: "
1419                                 "probe called with no platform data; "
1420                                 "remove unused devices\n");
1421                 return -ENODEV;
1422         }
1423
1424         ndev = fs_init_instance(dev, dev->platform_data);
1425         if (IS_ERR(ndev))
1426                 return PTR_ERR(ndev);
1427         return 0;
1428 }
1429
1430 static int fs_enet_remove(struct device *dev)
1431 {
1432         return fs_cleanup_instance(dev_get_drvdata(dev));
1433 }
1434
1435 static struct device_driver fs_enet_fec_driver = {
1436         .name           = "fsl-cpm-fec",
1437         .bus            = &platform_bus_type,
1438         .probe          = fs_enet_probe,
1439         .remove         = fs_enet_remove,
1440 #ifdef CONFIG_PM
1441 /*      .suspend        = fs_enet_suspend,      TODO */
1442 /*      .resume         = fs_enet_resume,       TODO */
1443 #endif
1444 };
1445
1446 static struct device_driver fs_enet_scc_driver = {
1447         .name           = "fsl-cpm-scc",
1448         .bus            = &platform_bus_type,
1449         .probe          = fs_enet_probe,
1450         .remove         = fs_enet_remove,
1451 #ifdef CONFIG_PM
1452 /*      .suspend        = fs_enet_suspend,      TODO */
1453 /*      .resume         = fs_enet_resume,       TODO */
1454 #endif
1455 };
1456
1457 static struct device_driver fs_enet_fcc_driver = {
1458         .name           = "fsl-cpm-fcc",
1459         .bus            = &platform_bus_type,
1460         .probe          = fs_enet_probe,
1461         .remove         = fs_enet_remove,
1462 #ifdef CONFIG_PM
1463 /*      .suspend        = fs_enet_suspend,      TODO */
1464 /*      .resume         = fs_enet_resume,       TODO */
1465 #endif
1466 };
1467
1468 static int __init fs_init(void)
1469 {
1470         int r;
1471
1472         printk(KERN_INFO
1473                         "%s", version);
1474
1475         r = setup_immap();
1476         if (r != 0)
1477                 return r;
1478
1479 #ifdef CONFIG_FS_ENET_HAS_FCC
1480         /* let's insert mii stuff */
1481         r = fs_enet_mdio_bb_init();
1482
1483         if (r != 0) {
1484                 printk(KERN_ERR DRV_MODULE_NAME
1485                         "BB PHY init failed.\n");
1486                 return r;
1487         }
1488         r = driver_register(&fs_enet_fcc_driver);
1489         if (r != 0)
1490                 goto err;
1491 #endif
1492
1493 #ifdef CONFIG_FS_ENET_HAS_FEC
1494         r =  fs_enet_mdio_fec_init();
1495         if (r != 0) {
1496                 printk(KERN_ERR DRV_MODULE_NAME
1497                         "FEC PHY init failed.\n");
1498                 return r;
1499         }
1500
1501         r = driver_register(&fs_enet_fec_driver);
1502         if (r != 0)
1503                 goto err;
1504 #endif
1505
1506 #ifdef CONFIG_FS_ENET_HAS_SCC
1507         r = driver_register(&fs_enet_scc_driver);
1508         if (r != 0)
1509                 goto err;
1510 #endif
1511
1512         return 0;
1513 err:
1514         cleanup_immap();
1515         return r;
1516 }
1517
1518 static void __exit fs_cleanup(void)
1519 {
1520         driver_unregister(&fs_enet_fec_driver);
1521         driver_unregister(&fs_enet_fcc_driver);
1522         driver_unregister(&fs_enet_scc_driver);
1523         cleanup_immap();
1524 }
1525 #endif
1526
1527 #ifdef CONFIG_NET_POLL_CONTROLLER
1528 static void fs_enet_netpoll(struct net_device *dev)
1529 {
1530        disable_irq(dev->irq);
1531        fs_enet_interrupt(dev->irq, dev, NULL);
1532        enable_irq(dev->irq);
1533 }
1534 #endif
1535
1536 /**************************************************************************************/
1537
1538 module_init(fs_init);
1539 module_exit(fs_cleanup);