git.oblomov.eu Git - linux-2.6/blob - 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 <asm/of_platform.h>
  47 #endif
  48
  49 #include "fs_enet.h"
  50
  51 /*************************************************/
  52
  53 #ifndef CONFIG_PPC_CPM_NEW_BINDING
  54 static char version[] __devinitdata =
  55     DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")" "\n";
  56 #endif
  57
  58 MODULE_AUTHOR("Pantelis Antoniou <panto@intracom.gr>");
  59 MODULE_DESCRIPTION("Freescale Ethernet Driver");
  60 MODULE_LICENSE("GPL");
  61 MODULE_VERSION(DRV_MODULE_VERSION);
  62
  63 static int fs_enet_debug = -1; /* -1 == use FS_ENET_DEF_MSG_ENABLE as value */
  64 module_param(fs_enet_debug, int, 0);
  65 MODULE_PARM_DESC(fs_enet_debug,
  66                  "Freescale bitmapped debugging message enable value");
  67
  68 #ifdef CONFIG_NET_POLL_CONTROLLER
  69 static void fs_enet_netpoll(struct net_device *dev);
  70 #endif
  71
  72 static void fs_set_multicast_list(struct net_device *dev)
  73 {
  74         struct fs_enet_private *fep = netdev_priv(dev);
  75
  76         (*fep->ops->set_multicast_list)(dev);
  77 }
  78
  79 static void skb_align(struct sk_buff *skb, int align)
  80 {
  81         int off = ((unsigned long)skb->data) & (align - 1);
  82
  83         if (off)
  84                 skb_reserve(skb, align - off);
  85 }
  86
  87 /* NAPI receive function */
  88 static int fs_enet_rx_napi(struct napi_struct *napi, int budget)
  89 {
  90         struct fs_enet_private *fep = container_of(napi, struct fs_enet_private, napi);
  91         struct net_device *dev = fep->ndev;
  92         const struct fs_platform_info *fpi = fep->fpi;
  93         cbd_t __iomem *bdp;
  94         struct sk_buff *skb, *skbn, *skbt;
  95         int received = 0;
  96         u16 pkt_len, sc;
  97         int curidx;
  98
  99         /*
 100          * First, grab all of the stats for the incoming packet.
 101          * These get messed up if we get called due to a busy condition.
 102          */
 103         bdp = fep->cur_rx;
 104
 105         /* clear RX status bits for napi*/
 106         (*fep->ops->napi_clear_rx_event)(dev);
 107
 108         while (((sc = CBDR_SC(bdp)) & BD_ENET_RX_EMPTY) == 0) {
 109                 curidx = bdp - fep->rx_bd_base;
 110
 111                 /*
 112                  * Since we have allocated space to hold a complete frame,
 113                  * the last indicator should be set.
 114                  */
 115                 if ((sc & BD_ENET_RX_LAST) == 0)
 116                         printk(KERN_WARNING DRV_MODULE_NAME
 117                                ": %s rcv is not +last\n",
 118                                dev->name);
 119
 120                 /*
 121                  * Check for errors.
 122                  */
 123                 if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_CL |
 124                           BD_ENET_RX_NO | BD_ENET_RX_CR | BD_ENET_RX_OV)) {
 125                         fep->stats.rx_errors++;
 126                         /* Frame too long or too short. */
 127                         if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH))
 128                                 fep->stats.rx_length_errors++;
 129                         /* Frame alignment */
 130                         if (sc & (BD_ENET_RX_NO | BD_ENET_RX_CL))
 131                                 fep->stats.rx_frame_errors++;
 132                         /* CRC Error */
 133                         if (sc & BD_ENET_RX_CR)
 134                                 fep->stats.rx_crc_errors++;
 135                         /* FIFO overrun */
 136                         if (sc & BD_ENET_RX_OV)
 137                                 fep->stats.rx_crc_errors++;
 138
 139                         skb = fep->rx_skbuff[curidx];
 140
 141                         dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
 142                                 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
 143                                 DMA_FROM_DEVICE);
 144
 145                         skbn = skb;
 146
 147                 } else {
 148                         skb = fep->rx_skbuff[curidx];
 149
 150                         dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
 151                                 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
 152                                 DMA_FROM_DEVICE);
 153
 154                         /*
 155                          * Process the incoming frame.
 156                          */
 157                         fep->stats.rx_packets++;
 158                         pkt_len = CBDR_DATLEN(bdp) - 4; /* remove CRC */
 159                         fep->stats.rx_bytes += pkt_len + 4;
 160
 161                         if (pkt_len <= fpi->rx_copybreak) {
 162                                 /* +2 to make IP header L1 cache aligned */
 163                                 skbn = dev_alloc_skb(pkt_len + 2);
 164                                 if (skbn != NULL) {
 165                                         skb_reserve(skbn, 2);   /* align IP header */
 166                                         skb_copy_from_linear_data(skb,
 167                                                       skbn->data, pkt_len);
 168                                         /* swap */
 169                                         skbt = skb;
 170                                         skb = skbn;
 171                                         skbn = skbt;
 172                                 }
 173                         } else {
 174                                 skbn = dev_alloc_skb(ENET_RX_FRSIZE);
 175
 176                                 if (skbn)
 177                                         skb_align(skbn, ENET_RX_ALIGN);
 178                         }
 179
 180                         if (skbn != NULL) {
 181                                 skb_put(skb, pkt_len);  /* Make room */
 182                                 skb->protocol = eth_type_trans(skb, dev);
 183                                 received++;
 184                                 netif_receive_skb(skb);
 185                         } else {
 186                                 printk(KERN_WARNING DRV_MODULE_NAME
 187                                        ": %s Memory squeeze, dropping packet.\n",
 188                                        dev->name);
 189                                 fep->stats.rx_dropped++;
 190                                 skbn = skb;
 191                         }
 192                 }
 193
 194                 fep->rx_skbuff[curidx] = skbn;
 195                 CBDW_BUFADDR(bdp, dma_map_single(fep->dev, skbn->data,
 196                              L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
 197                              DMA_FROM_DEVICE));
 198                 CBDW_DATLEN(bdp, 0);
 199                 CBDW_SC(bdp, (sc & ~BD_ENET_RX_STATS) | BD_ENET_RX_EMPTY);
 200
 201                 /*
 202                  * Update BD pointer to next entry.
 203                  */
 204                 if ((sc & BD_ENET_RX_WRAP) == 0)
 205                         bdp++;
 206                 else
 207                         bdp = fep->rx_bd_base;
 208
 209                 (*fep->ops->rx_bd_done)(dev);
 210
 211                 if (received >= budget)
 212                         break;
 213         }
 214
 215         fep->cur_rx = bdp;
 216
 217         if (received < budget) {
 218                 /* done */
 219                 netif_rx_complete(dev, napi);
 220                 (*fep->ops->napi_enable_rx)(dev);
 221         }
 222         return received;
 223 }
 224
 225 /* non NAPI receive function */
 226 static int fs_enet_rx_non_napi(struct net_device *dev)
 227 {
 228         struct fs_enet_private *fep = netdev_priv(dev);
 229         const struct fs_platform_info *fpi = fep->fpi;
 230         cbd_t __iomem *bdp;
 231         struct sk_buff *skb, *skbn, *skbt;
 232         int received = 0;
 233         u16 pkt_len, sc;
 234         int curidx;
 235         /*
 236          * First, grab all of the stats for the incoming packet.
 237          * These get messed up if we get called due to a busy condition.
 238          */
 239         bdp = fep->cur_rx;
 240
 241         while (((sc = CBDR_SC(bdp)) & BD_ENET_RX_EMPTY) == 0) {
 242
 243                 curidx = bdp - fep->rx_bd_base;
 244
 245                 /*
 246                  * Since we have allocated space to hold a complete frame,
 247                  * the last indicator should be set.
 248                  */
 249                 if ((sc & BD_ENET_RX_LAST) == 0)
 250                         printk(KERN_WARNING DRV_MODULE_NAME
 251                                ": %s rcv is not +last\n",
 252                                dev->name);
 253
 254                 /*
 255                  * Check for errors.
 256                  */
 257                 if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_CL |
 258                           BD_ENET_RX_NO | BD_ENET_RX_CR | BD_ENET_RX_OV)) {
 259                         fep->stats.rx_errors++;
 260                         /* Frame too long or too short. */
 261                         if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH))
 262                                 fep->stats.rx_length_errors++;
 263                         /* Frame alignment */
 264                         if (sc & (BD_ENET_RX_NO | BD_ENET_RX_CL))
 265                                 fep->stats.rx_frame_errors++;
 266                         /* CRC Error */
 267                         if (sc & BD_ENET_RX_CR)
 268                                 fep->stats.rx_crc_errors++;
 269                         /* FIFO overrun */
 270                         if (sc & BD_ENET_RX_OV)
 271                                 fep->stats.rx_crc_errors++;
 272
 273                         skb = fep->rx_skbuff[curidx];
 274
 275                         dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
 276                                 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
 277                                 DMA_FROM_DEVICE);
 278
 279                         skbn = skb;
 280
 281                 } else {
 282
 283                         skb = fep->rx_skbuff[curidx];
 284
 285                         dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
 286                                 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
 287                                 DMA_FROM_DEVICE);
 288
 289                         /*
 290                          * Process the incoming frame.
 291                          */
 292                         fep->stats.rx_packets++;
 293                         pkt_len = CBDR_DATLEN(bdp) - 4; /* remove CRC */
 294                         fep->stats.rx_bytes += pkt_len + 4;
 295
 296                         if (pkt_len <= fpi->rx_copybreak) {
 297                                 /* +2 to make IP header L1 cache aligned */
 298                                 skbn = dev_alloc_skb(pkt_len + 2);
 299                                 if (skbn != NULL) {
 300                                         skb_reserve(skbn, 2);   /* align IP header */
 301                                         skb_copy_from_linear_data(skb,
 302                                                       skbn->data, pkt_len);
 303                                         /* swap */
 304                                         skbt = skb;
 305                                         skb = skbn;
 306                                         skbn = skbt;
 307                                 }
 308                         } else {
 309                                 skbn = dev_alloc_skb(ENET_RX_FRSIZE);
 310
 311                                 if (skbn)
 312                                         skb_align(skbn, ENET_RX_ALIGN);
 313                         }
 314
 315                         if (skbn != NULL) {
 316                                 skb_put(skb, pkt_len);  /* Make room */
 317                                 skb->protocol = eth_type_trans(skb, dev);
 318                                 received++;
 319                                 netif_rx(skb);
 320                         } else {
 321                                 printk(KERN_WARNING DRV_MODULE_NAME
 322                                        ": %s Memory squeeze, dropping packet.\n",
 323                                        dev->name);
 324                                 fep->stats.rx_dropped++;
 325                                 skbn = skb;
 326                         }
 327                 }
 328
 329                 fep->rx_skbuff[curidx] = skbn;
 330                 CBDW_BUFADDR(bdp, dma_map_single(fep->dev, skbn->data,
 331                              L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
 332                              DMA_FROM_DEVICE));
 333                 CBDW_DATLEN(bdp, 0);
 334                 CBDW_SC(bdp, (sc & ~BD_ENET_RX_STATS) | BD_ENET_RX_EMPTY);
 335
 336                 /*
 337                  * Update BD pointer to next entry.
 338                  */
 339                 if ((sc & BD_ENET_RX_WRAP) == 0)
 340                         bdp++;
 341                 else
 342                         bdp = fep->rx_bd_base;
 343
 344                 (*fep->ops->rx_bd_done)(dev);
 345         }
 346
 347         fep->cur_rx = bdp;
 348
 349         return 0;
 350 }
 351
 352 static void fs_enet_tx(struct net_device *dev)
 353 {
 354         struct fs_enet_private *fep = netdev_priv(dev);
 355         cbd_t __iomem *bdp;
 356         struct sk_buff *skb;
 357         int dirtyidx, do_wake, do_restart;
 358         u16 sc;
 359
 360         spin_lock(&fep->tx_lock);
 361         bdp = fep->dirty_tx;
 362
 363         do_wake = do_restart = 0;
 364         while (((sc = CBDR_SC(bdp)) & BD_ENET_TX_READY) == 0) {
 365                 dirtyidx = bdp - fep->tx_bd_base;
 366
 367                 if (fep->tx_free == fep->tx_ring)
 368                         break;
 369
 370                 skb = fep->tx_skbuff[dirtyidx];
 371
 372                 /*
 373                  * Check for errors.
 374                  */
 375                 if (sc & (BD_ENET_TX_HB | BD_ENET_TX_LC |
 376                           BD_ENET_TX_RL | BD_ENET_TX_UN | BD_ENET_TX_CSL)) {
 377
 378                         if (sc & BD_ENET_TX_HB) /* No heartbeat */
 379                                 fep->stats.tx_heartbeat_errors++;
 380                         if (sc & BD_ENET_TX_LC) /* Late collision */
 381                                 fep->stats.tx_window_errors++;
 382                         if (sc & BD_ENET_TX_RL) /* Retrans limit */
 383                                 fep->stats.tx_aborted_errors++;
 384                         if (sc & BD_ENET_TX_UN) /* Underrun */
 385                                 fep->stats.tx_fifo_errors++;
 386                         if (sc & BD_ENET_TX_CSL)        /* Carrier lost */
 387                                 fep->stats.tx_carrier_errors++;
 388
 389                         if (sc & (BD_ENET_TX_LC | BD_ENET_TX_RL | BD_ENET_TX_UN)) {
 390                                 fep->stats.tx_errors++;
 391                                 do_restart = 1;
 392                         }
 393                 } else
 394                         fep->stats.tx_packets++;
 395
 396                 if (sc & BD_ENET_TX_READY)
 397                         printk(KERN_WARNING DRV_MODULE_NAME
 398                                ": %s HEY! Enet xmit interrupt and TX_READY.\n",
 399                                dev->name);
 400
 401                 /*
 402                  * Deferred means some collisions occurred during transmit,
 403                  * but we eventually sent the packet OK.
 404                  */
 405                 if (sc & BD_ENET_TX_DEF)
 406                         fep->stats.collisions++;
 407
 408                 /* unmap */
 409                 dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
 410                                 skb->len, DMA_TO_DEVICE);
 411
 412                 /*
 413                  * Free the sk buffer associated with this last transmit.
 414                  */
 415                 dev_kfree_skb_irq(skb);
 416                 fep->tx_skbuff[dirtyidx] = NULL;
 417
 418                 /*
 419                  * Update pointer to next buffer descriptor to be transmitted.
 420                  */
 421                 if ((sc & BD_ENET_TX_WRAP) == 0)
 422                         bdp++;
 423                 else
 424                         bdp = fep->tx_bd_base;
 425
 426                 /*
 427                  * Since we have freed up a buffer, the ring is no longer
 428                  * full.
 429                  */
 430                 if (!fep->tx_free++)
 431                         do_wake = 1;
 432         }
 433
 434         fep->dirty_tx = bdp;
 435
 436         if (do_restart)
 437                 (*fep->ops->tx_restart)(dev);
 438
 439         spin_unlock(&fep->tx_lock);
 440
 441         if (do_wake)
 442                 netif_wake_queue(dev);
 443 }
 444
 445 /*
 446  * The interrupt handler.
 447  * This is called from the MPC core interrupt.
 448  */
 449 static irqreturn_t
 450 fs_enet_interrupt(int irq, void *dev_id)
 451 {
 452         struct net_device *dev = dev_id;
 453         struct fs_enet_private *fep;
 454         const struct fs_platform_info *fpi;
 455         u32 int_events;
 456         u32 int_clr_events;
 457         int nr, napi_ok;
 458         int handled;
 459
 460         fep = netdev_priv(dev);
 461         fpi = fep->fpi;
 462
 463         nr = 0;
 464         while ((int_events = (*fep->ops->get_int_events)(dev)) != 0) {
 465                 nr++;
 466
 467                 int_clr_events = int_events;
 468                 if (fpi->use_napi)
 469                         int_clr_events &= ~fep->ev_napi_rx;
 470
 471                 (*fep->ops->clear_int_events)(dev, int_clr_events);
 472
 473                 if (int_events & fep->ev_err)
 474                         (*fep->ops->ev_error)(dev, int_events);
 475
 476                 if (int_events & fep->ev_rx) {
 477                         if (!fpi->use_napi)
 478                                 fs_enet_rx_non_napi(dev);
 479                         else {
 480                                 napi_ok = napi_schedule_prep(&fep->napi);
 481
 482                                 (*fep->ops->napi_disable_rx)(dev);
 483                                 (*fep->ops->clear_int_events)(dev, fep->ev_napi_rx);
 484
 485                                 /* NOTE: it is possible for FCCs in NAPI mode    */
 486                                 /* to submit a spurious interrupt while in poll  */
 487                                 if (napi_ok)
 488                                         __netif_rx_schedule(dev, &fep->napi);
 489                         }
 490                 }
 491
 492                 if (int_events & fep->ev_tx)
 493                         fs_enet_tx(dev);
 494         }
 495
 496         handled = nr > 0;
 497         return IRQ_RETVAL(handled);
 498 }
 499
 500 void fs_init_bds(struct net_device *dev)
 501 {
 502         struct fs_enet_private *fep = netdev_priv(dev);
 503         cbd_t __iomem *bdp;
 504         struct sk_buff *skb;
 505         int i;
 506
 507         fs_cleanup_bds(dev);
 508
 509         fep->dirty_tx = fep->cur_tx = fep->tx_bd_base;
 510         fep->tx_free = fep->tx_ring;
 511         fep->cur_rx = fep->rx_bd_base;
 512
 513         /*
 514          * Initialize the receive buffer descriptors.
 515          */
 516         for (i = 0, bdp = fep->rx_bd_base; i < fep->rx_ring; i++, bdp++) {
 517                 skb = dev_alloc_skb(ENET_RX_FRSIZE);
 518                 if (skb == NULL) {
 519                         printk(KERN_WARNING DRV_MODULE_NAME
 520                                ": %s Memory squeeze, unable to allocate skb\n",
 521                                dev->name);
 522                         break;
 523                 }
 524                 skb_align(skb, ENET_RX_ALIGN);
 525                 fep->rx_skbuff[i] = skb;
 526                 CBDW_BUFADDR(bdp,
 527                         dma_map_single(fep->dev, skb->data,
 528                                 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
 529                                 DMA_FROM_DEVICE));
 530                 CBDW_DATLEN(bdp, 0);    /* zero */
 531                 CBDW_SC(bdp, BD_ENET_RX_EMPTY |
 532                         ((i < fep->rx_ring - 1) ? 0 : BD_SC_WRAP));
 533         }
 534         /*
 535          * if we failed, fillup remainder
 536          */
 537         for (; i < fep->rx_ring; i++, bdp++) {
 538                 fep->rx_skbuff[i] = NULL;
 539                 CBDW_SC(bdp, (i < fep->rx_ring - 1) ? 0 : BD_SC_WRAP);
 540         }
 541
 542         /*
 543          * ...and the same for transmit.
 544          */
 545         for (i = 0, bdp = fep->tx_bd_base; i < fep->tx_ring; i++, bdp++) {
 546                 fep->tx_skbuff[i] = NULL;
 547                 CBDW_BUFADDR(bdp, 0);
 548                 CBDW_DATLEN(bdp, 0);
 549                 CBDW_SC(bdp, (i < fep->tx_ring - 1) ? 0 : BD_SC_WRAP);
 550         }
 551 }
 552
 553 void fs_cleanup_bds(struct net_device *dev)
 554 {
 555         struct fs_enet_private *fep = netdev_priv(dev);
 556         struct sk_buff *skb;
 557         cbd_t __iomem *bdp;
 558         int i;
 559
 560         /*
 561          * Reset SKB transmit buffers.
 562          */
 563         for (i = 0, bdp = fep->tx_bd_base; i < fep->tx_ring; i++, bdp++) {
 564                 if ((skb = fep->tx_skbuff[i]) == NULL)
 565                         continue;
 566
 567                 /* unmap */
 568                 dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
 569                                 skb->len, DMA_TO_DEVICE);
 570
 571                 fep->tx_skbuff[i] = NULL;
 572                 dev_kfree_skb(skb);
 573         }
 574
 575         /*
 576          * Reset SKB receive buffers
 577          */
 578         for (i = 0, bdp = fep->rx_bd_base; i < fep->rx_ring; i++, bdp++) {
 579                 if ((skb = fep->rx_skbuff[i]) == NULL)
 580                         continue;
 581
 582                 /* unmap */
 583                 dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
 584                         L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
 585                         DMA_FROM_DEVICE);
 586
 587                 fep->rx_skbuff[i] = NULL;
 588
 589                 dev_kfree_skb(skb);
 590         }
 591 }
 592
 593 /**********************************************************************************/
 594
 595 static int fs_enet_start_xmit(struct sk_buff *skb, struct net_device *dev)
 596 {
 597         struct fs_enet_private *fep = netdev_priv(dev);
 598         cbd_t __iomem *bdp;
 599         int curidx;
 600         u16 sc;
 601         unsigned long flags;
 602
 603         spin_lock_irqsave(&fep->tx_lock, flags);
 604
 605         /*
 606          * Fill in a Tx ring entry
 607          */
 608         bdp = fep->cur_tx;
 609
 610         if (!fep->tx_free || (CBDR_SC(bdp) & BD_ENET_TX_READY)) {
 611                 netif_stop_queue(dev);
 612                 spin_unlock_irqrestore(&fep->tx_lock, flags);
 613
 614                 /*
 615                  * Ooops.  All transmit buffers are full.  Bail out.
 616                  * This should not happen, since the tx queue should be stopped.
 617                  */
 618                 printk(KERN_WARNING DRV_MODULE_NAME
 619                        ": %s tx queue full!.\n", dev->name);
 620                 return NETDEV_TX_BUSY;
 621         }
 622
 623         curidx = bdp - fep->tx_bd_base;
 624         /*
 625          * Clear all of the status flags.
 626          */
 627         CBDC_SC(bdp, BD_ENET_TX_STATS);
 628
 629         /*
 630          * Save skb pointer.
 631          */
 632         fep->tx_skbuff[curidx] = skb;
 633
 634         fep->stats.tx_bytes += skb->len;
 635
 636         /*
 637          * Push the data cache so the CPM does not get stale memory data.
 638          */
 639         CBDW_BUFADDR(bdp, dma_map_single(fep->dev,
 640                                 skb->data, skb->len, DMA_TO_DEVICE));
 641         CBDW_DATLEN(bdp, skb->len);
 642
 643         dev->trans_start = jiffies;
 644
 645         /*
 646          * If this was the last BD in the ring, start at the beginning again.
 647          */
 648         if ((CBDR_SC(bdp) & BD_ENET_TX_WRAP) == 0)
 649                 fep->cur_tx++;
 650         else
 651                 fep->cur_tx = fep->tx_bd_base;
 652
 653         if (!--fep->tx_free)
 654                 netif_stop_queue(dev);
 655
 656         /* Trigger transmission start */
 657         sc = BD_ENET_TX_READY | BD_ENET_TX_INTR |
 658              BD_ENET_TX_LAST | BD_ENET_TX_TC;
 659
 660         /* note that while FEC does not have this bit
 661          * it marks it as available for software use
 662          * yay for hw reuse :) */
 663         if (skb->len <= 60)
 664                 sc |= BD_ENET_TX_PAD;
 665         CBDS_SC(bdp, sc);
 666
 667         (*fep->ops->tx_kickstart)(dev);
 668
 669         spin_unlock_irqrestore(&fep->tx_lock, flags);
 670
 671         return NETDEV_TX_OK;
 672 }
 673
 674 static int fs_request_irq(struct net_device *dev, int irq, const char *name,
 675                 irq_handler_t irqf)
 676 {
 677         struct fs_enet_private *fep = netdev_priv(dev);
 678
 679         (*fep->ops->pre_request_irq)(dev, irq);
 680         return request_irq(irq, irqf, IRQF_SHARED, name, dev);
 681 }
 682
 683 static void fs_free_irq(struct net_device *dev, int irq)
 684 {
 685         struct fs_enet_private *fep = netdev_priv(dev);
 686
 687         free_irq(irq, dev);
 688         (*fep->ops->post_free_irq)(dev, irq);
 689 }
 690
 691 static void fs_timeout(struct net_device *dev)
 692 {
 693         struct fs_enet_private *fep = netdev_priv(dev);
 694         unsigned long flags;
 695         int wake = 0;
 696
 697         fep->stats.tx_errors++;
 698
 699         spin_lock_irqsave(&fep->lock, flags);
 700
 701         if (dev->flags & IFF_UP) {
 702                 phy_stop(fep->phydev);
 703                 (*fep->ops->stop)(dev);
 704                 (*fep->ops->restart)(dev);
 705                 phy_start(fep->phydev);
 706         }
 707
 708         phy_start(fep->phydev);
 709         wake = fep->tx_free && !(CBDR_SC(fep->cur_tx) & BD_ENET_TX_READY);
 710         spin_unlock_irqrestore(&fep->lock, flags);
 711
 712         if (wake)
 713                 netif_wake_queue(dev);
 714 }
 715
 716 /*-----------------------------------------------------------------------------
 717  *  generic link-change handler - should be sufficient for most cases
 718  *-----------------------------------------------------------------------------*/
 719 static void generic_adjust_link(struct  net_device *dev)
 720 {
 721         struct fs_enet_private *fep = netdev_priv(dev);
 722         struct phy_device *phydev = fep->phydev;
 723         int new_state = 0;
 724
 725         if (phydev->link) {
 726                 /* adjust to duplex mode */
 727                 if (phydev->duplex != fep->oldduplex) {
 728                         new_state = 1;
 729                         fep->oldduplex = phydev->duplex;
 730                 }
 731
 732                 if (phydev->speed != fep->oldspeed) {
 733                         new_state = 1;
 734                         fep->oldspeed = phydev->speed;
 735                 }
 736
 737                 if (!fep->oldlink) {
 738                         new_state = 1;
 739                         fep->oldlink = 1;
 740                         netif_schedule(dev);
 741                         netif_carrier_on(dev);
 742                         netif_start_queue(dev);
 743                 }
 744
 745                 if (new_state)
 746                         fep->ops->restart(dev);
 747         } else if (fep->oldlink) {
 748                 new_state = 1;
 749                 fep->oldlink = 0;
 750                 fep->oldspeed = 0;
 751                 fep->oldduplex = -1;
 752                 netif_carrier_off(dev);
 753                 netif_stop_queue(dev);
 754         }
 755
 756         if (new_state && netif_msg_link(fep))
 757                 phy_print_status(phydev);
 758 }
 759
 760
 761 static void fs_adjust_link(struct net_device *dev)
 762 {
 763         struct fs_enet_private *fep = netdev_priv(dev);
 764         unsigned long flags;
 765
 766         spin_lock_irqsave(&fep->lock, flags);
 767
 768         if(fep->ops->adjust_link)
 769                 fep->ops->adjust_link(dev);
 770         else
 771                 generic_adjust_link(dev);
 772
 773         spin_unlock_irqrestore(&fep->lock, flags);
 774 }
 775
 776 static int fs_init_phy(struct net_device *dev)
 777 {
 778         struct fs_enet_private *fep = netdev_priv(dev);
 779         struct phy_device *phydev;
 780
 781         fep->oldlink = 0;
 782         fep->oldspeed = 0;
 783         fep->oldduplex = -1;
 784         if(fep->fpi->bus_id)
 785                 phydev = phy_connect(dev, fep->fpi->bus_id, &fs_adjust_link, 0,
 786                                 PHY_INTERFACE_MODE_MII);
 787         else {
 788                 printk("No phy bus ID specified in BSP code\n");
 789                 return -EINVAL;
 790         }
 791         if (IS_ERR(phydev)) {
 792                 printk(KERN_ERR "%s: Could not attach to PHY\n", dev->name);
 793                 return PTR_ERR(phydev);
 794         }
 795
 796         fep->phydev = phydev;
 797
 798         return 0;
 799 }
 800
 801 static int fs_enet_open(struct net_device *dev)
 802 {
 803         struct fs_enet_private *fep = netdev_priv(dev);
 804         int r;
 805         int err;
 806
 807         if (fep->fpi->use_napi)
 808                 napi_enable(&fep->napi);
 809
 810         /* Install our interrupt handler. */
 811         r = fs_request_irq(dev, fep->interrupt, "fs_enet-mac", fs_enet_interrupt);
 812         if (r != 0) {
 813                 printk(KERN_ERR DRV_MODULE_NAME
 814                        ": %s Could not allocate FS_ENET IRQ!", dev->name);
 815                 if (fep->fpi->use_napi)
 816                         napi_disable(&fep->napi);
 817                 return -EINVAL;
 818         }
 819
 820         err = fs_init_phy(dev);
 821         if (err) {
 822                 if (fep->fpi->use_napi)
 823                         napi_disable(&fep->napi);
 824                 return err;
 825         }
 826         phy_start(fep->phydev);
 827
 828         return 0;
 829 }
 830
 831 static int fs_enet_close(struct net_device *dev)
 832 {
 833         struct fs_enet_private *fep = netdev_priv(dev);
 834         unsigned long flags;
 835
 836         netif_stop_queue(dev);
 837         netif_carrier_off(dev);
 838         napi_disable(&fep->napi);
 839         phy_stop(fep->phydev);
 840
 841         spin_lock_irqsave(&fep->lock, flags);
 842         spin_lock(&fep->tx_lock);
 843         (*fep->ops->stop)(dev);
 844         spin_unlock(&fep->tx_lock);
 845         spin_unlock_irqrestore(&fep->lock, flags);
 846
 847         /* release any irqs */
 848         phy_disconnect(fep->phydev);
 849         fep->phydev = NULL;
 850         fs_free_irq(dev, fep->interrupt);
 851
 852         return 0;
 853 }
 854
 855 static struct net_device_stats *fs_enet_get_stats(struct net_device *dev)
 856 {
 857         struct fs_enet_private *fep = netdev_priv(dev);
 858         return &fep->stats;
 859 }
 860
 861 /*************************************************************************/
 862
 863 static void fs_get_drvinfo(struct net_device *dev,
 864                             struct ethtool_drvinfo *info)
 865 {
 866         strcpy(info->driver, DRV_MODULE_NAME);
 867         strcpy(info->version, DRV_MODULE_VERSION);
 868 }
 869
 870 static int fs_get_regs_len(struct net_device *dev)
 871 {
 872         struct fs_enet_private *fep = netdev_priv(dev);
 873
 874         return (*fep->ops->get_regs_len)(dev);
 875 }
 876
 877 static void fs_get_regs(struct net_device *dev, struct ethtool_regs *regs,
 878                          void *p)
 879 {
 880         struct fs_enet_private *fep = netdev_priv(dev);
 881         unsigned long flags;
 882         int r, len;
 883
 884         len = regs->len;
 885
 886         spin_lock_irqsave(&fep->lock, flags);
 887         r = (*fep->ops->get_regs)(dev, p, &len);
 888         spin_unlock_irqrestore(&fep->lock, flags);
 889
 890         if (r == 0)
 891                 regs->version = 0;
 892 }
 893
 894 static int fs_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 895 {
 896         struct fs_enet_private *fep = netdev_priv(dev);
 897
 898         if (!fep->phydev)
 899                 return -ENODEV;
 900
 901         return phy_ethtool_gset(fep->phydev, cmd);
 902 }
 903
 904 static int fs_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 905 {
 906         struct fs_enet_private *fep = netdev_priv(dev);
 907
 908         if (!fep->phydev)
 909                 return -ENODEV;
 910
 911         return phy_ethtool_sset(fep->phydev, cmd);
 912 }
 913
 914 static int fs_nway_reset(struct net_device *dev)
 915 {
 916         return 0;
 917 }
 918
 919 static u32 fs_get_msglevel(struct net_device *dev)
 920 {
 921         struct fs_enet_private *fep = netdev_priv(dev);
 922         return fep->msg_enable;
 923 }
 924
 925 static void fs_set_msglevel(struct net_device *dev, u32 value)
 926 {
 927         struct fs_enet_private *fep = netdev_priv(dev);
 928         fep->msg_enable = value;
 929 }
 930
 931 static const struct ethtool_ops fs_ethtool_ops = {
 932         .get_drvinfo = fs_get_drvinfo,
 933         .get_regs_len = fs_get_regs_len,
 934         .get_settings = fs_get_settings,
 935         .set_settings = fs_set_settings,
 936         .nway_reset = fs_nway_reset,
 937         .get_link = ethtool_op_get_link,
 938         .get_msglevel = fs_get_msglevel,
 939         .set_msglevel = fs_set_msglevel,
 940         .set_tx_csum = ethtool_op_set_tx_csum,  /* local! */
 941         .set_sg = ethtool_op_set_sg,
 942         .get_regs = fs_get_regs,
 943 };
 944
 945 static int fs_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 946 {
 947         struct fs_enet_private *fep = netdev_priv(dev);
 948         struct mii_ioctl_data *mii = (struct mii_ioctl_data *)&rq->ifr_data;
 949
 950         if (!netif_running(dev))
 951                 return -EINVAL;
 952
 953         return phy_mii_ioctl(fep->phydev, mii, cmd);
 954 }
 955
 956 extern int fs_mii_connect(struct net_device *dev);
 957 extern void fs_mii_disconnect(struct net_device *dev);
 958
 959 #ifndef CONFIG_PPC_CPM_NEW_BINDING
 960 static struct net_device *fs_init_instance(struct device *dev,
 961                 struct fs_platform_info *fpi)
 962 {
 963         struct net_device *ndev = NULL;
 964         struct fs_enet_private *fep = NULL;
 965         int privsize, i, r, err = 0, registered = 0;
 966
 967         fpi->fs_no = fs_get_id(fpi);
 968         /* guard */
 969         if ((unsigned int)fpi->fs_no >= FS_MAX_INDEX)
 970                 return ERR_PTR(-EINVAL);
 971
 972         privsize = sizeof(*fep) + (sizeof(struct sk_buff **) *
 973                             (fpi->rx_ring + fpi->tx_ring));
 974
 975         ndev = alloc_etherdev(privsize);
 976         if (!ndev) {
 977                 err = -ENOMEM;
 978                 goto err;
 979         }
 980
 981         fep = netdev_priv(ndev);
 982
 983         fep->dev = dev;
 984         dev_set_drvdata(dev, ndev);
 985         fep->fpi = fpi;
 986         if (fpi->init_ioports)
 987                 fpi->init_ioports((struct fs_platform_info *)fpi);
 988
 989 #ifdef CONFIG_FS_ENET_HAS_FEC
 990         if (fs_get_fec_index(fpi->fs_no) >= 0)
 991                 fep->ops = &fs_fec_ops;
 992 #endif
 993
 994 #ifdef CONFIG_FS_ENET_HAS_SCC
 995         if (fs_get_scc_index(fpi->fs_no) >=0)
 996                 fep->ops = &fs_scc_ops;
 997 #endif
 998
 999 #ifdef CONFIG_FS_ENET_HAS_FCC
1000         if (fs_get_fcc_index(fpi->fs_no) >= 0)
1001                 fep->ops = &fs_fcc_ops;
1002 #endif
1003
1004         if (fep->ops == NULL) {
1005                 printk(KERN_ERR DRV_MODULE_NAME
1006                        ": %s No matching ops found (%d).\n",
1007                        ndev->name, fpi->fs_no);
1008                 err = -EINVAL;
1009                 goto err;
1010         }
1011
1012         r = (*fep->ops->setup_data)(ndev);
1013         if (r != 0) {
1014                 printk(KERN_ERR DRV_MODULE_NAME
1015                        ": %s setup_data failed\n",
1016                         ndev->name);
1017                 err = r;
1018                 goto err;
1019         }
1020
1021         /* point rx_skbuff, tx_skbuff */
1022         fep->rx_skbuff = (struct sk_buff **)&fep[1];
1023         fep->tx_skbuff = fep->rx_skbuff + fpi->rx_ring;
1024
1025         /* init locks */
1026         spin_lock_init(&fep->lock);
1027         spin_lock_init(&fep->tx_lock);
1028
1029         /*
1030          * Set the Ethernet address.
1031          */
1032         for (i = 0; i < 6; i++)
1033                 ndev->dev_addr[i] = fpi->macaddr[i];
1034
1035         r = (*fep->ops->allocate_bd)(ndev);
1036
1037         if (fep->ring_base == NULL) {
1038                 printk(KERN_ERR DRV_MODULE_NAME
1039                        ": %s buffer descriptor alloc failed (%d).\n", ndev->name, r);
1040                 err = r;
1041                 goto err;
1042         }
1043
1044         /*
1045          * Set receive and transmit descriptor base.
1046          */
1047         fep->rx_bd_base = fep->ring_base;
1048         fep->tx_bd_base = fep->rx_bd_base + fpi->rx_ring;
1049
1050         /* initialize ring size variables */
1051         fep->tx_ring = fpi->tx_ring;
1052         fep->rx_ring = fpi->rx_ring;
1053
1054         /*
1055          * The FEC Ethernet specific entries in the device structure.
1056          */
1057         ndev->open = fs_enet_open;
1058         ndev->hard_start_xmit = fs_enet_start_xmit;
1059         ndev->tx_timeout = fs_timeout;
1060         ndev->watchdog_timeo = 2 * HZ;
1061         ndev->stop = fs_enet_close;
1062         ndev->get_stats = fs_enet_get_stats;
1063         ndev->set_multicast_list = fs_set_multicast_list;
1064
1065 #ifdef CONFIG_NET_POLL_CONTROLLER
1066         ndev->poll_controller = fs_enet_netpoll;
1067 #endif
1068
1069         netif_napi_add(ndev, &fep->napi,
1070                        fs_enet_rx_napi, fpi->napi_weight);
1071
1072         ndev->ethtool_ops = &fs_ethtool_ops;
1073         ndev->do_ioctl = fs_ioctl;
1074
1075         init_timer(&fep->phy_timer_list);
1076
1077         netif_carrier_off(ndev);
1078
1079         err = register_netdev(ndev);
1080         if (err != 0) {
1081                 printk(KERN_ERR DRV_MODULE_NAME
1082                        ": %s register_netdev failed.\n", ndev->name);
1083                 goto err;
1084         }
1085         registered = 1;
1086
1087
1088         return ndev;
1089
1090 err:
1091         if (ndev != NULL) {
1092                 if (registered)
1093                         unregister_netdev(ndev);
1094
1095                 if (fep != NULL) {
1096                         (*fep->ops->free_bd)(ndev);
1097                         (*fep->ops->cleanup_data)(ndev);
1098                 }
1099
1100                 free_netdev(ndev);
1101         }
1102
1103         dev_set_drvdata(dev, NULL);
1104
1105         return ERR_PTR(err);
1106 }
1107
1108 static int fs_cleanup_instance(struct net_device *ndev)
1109 {
1110         struct fs_enet_private *fep;
1111         const struct fs_platform_info *fpi;
1112         struct device *dev;
1113
1114         if (ndev == NULL)
1115                 return -EINVAL;
1116
1117         fep = netdev_priv(ndev);
1118         if (fep == NULL)
1119                 return -EINVAL;
1120
1121         fpi = fep->fpi;
1122
1123         unregister_netdev(ndev);
1124
1125         dma_free_coherent(fep->dev, (fpi->tx_ring + fpi->rx_ring) * sizeof(cbd_t),
1126                           (void __force *)fep->ring_base, fep->ring_mem_addr);
1127
1128         /* reset it */
1129         (*fep->ops->cleanup_data)(ndev);
1130
1131         dev = fep->dev;
1132         if (dev != NULL) {
1133                 dev_set_drvdata(dev, NULL);
1134                 fep->dev = NULL;
1135         }
1136
1137         free_netdev(ndev);
1138
1139         return 0;
1140 }
1141 #endif
1142
1143 /**************************************************************************************/
1144
1145 /* handy pointer to the immap */
1146 void __iomem *fs_enet_immap = NULL;
1147
1148 static int setup_immap(void)
1149 {
1150 #ifdef CONFIG_CPM1
1151         fs_enet_immap = ioremap(IMAP_ADDR, 0x4000);
1152         WARN_ON(!fs_enet_immap);
1153 #elif defined(CONFIG_CPM2)
1154         fs_enet_immap = cpm2_immr;
1155 #endif
1156
1157         return 0;
1158 }
1159
1160 static void cleanup_immap(void)
1161 {
1162 #if defined(CONFIG_CPM1)
1163         iounmap(fs_enet_immap);
1164 #endif
1165 }
1166
1167 /**************************************************************************************/
1168
1169 #ifdef CONFIG_PPC_CPM_NEW_BINDING
1170 static int __devinit find_phy(struct device_node *np,
1171                               struct fs_platform_info *fpi)
1172 {
1173         struct device_node *phynode, *mdionode;
1174         struct resource res;
1175         int ret = 0, len;
1176         const u32 *data;
1177
1178         data  = of_get_property(np, "fixed-link", NULL);
1179         if (data) {
1180                 snprintf(fpi->bus_id, 16, PHY_ID_FMT, 0, *data);
1181                 return 0;
1182         }
1183
1184         data = of_get_property(np, "phy-handle", &len);
1185         if (!data || len != 4)
1186                 return -EINVAL;
1187
1188         phynode = of_find_node_by_phandle(*data);
1189         if (!phynode)
1190                 return -EINVAL;
1191
1192         mdionode = of_get_parent(phynode);
1193         if (!mdionode)
1194                 goto out_put_phy;
1195
1196         ret = of_address_to_resource(mdionode, 0, &res);
1197         if (ret)
1198                 goto out_put_mdio;
1199
1200         data = of_get_property(phynode, "reg", &len);
1201         if (!data || len != 4)
1202                 goto out_put_mdio;
1203
1204         snprintf(fpi->bus_id, 16, PHY_ID_FMT, res.start, *data);
1205
1206 out_put_mdio:
1207         of_node_put(mdionode);
1208 out_put_phy:
1209         of_node_put(phynode);
1210         return ret;
1211 }
1212
1213 #ifdef CONFIG_FS_ENET_HAS_FEC
1214 #define IS_FEC(match) ((match)->data == &fs_fec_ops)
1215 #else
1216 #define IS_FEC(match) 0
1217 #endif
1218
1219 static int __devinit fs_enet_probe(struct of_device *ofdev,
1220                                    const struct of_device_id *match)
1221 {
1222         struct net_device *ndev;
1223         struct fs_enet_private *fep;
1224         struct fs_platform_info *fpi;
1225         const u32 *data;
1226         const u8 *mac_addr;
1227         int privsize, len, ret = -ENODEV;
1228
1229         fpi = kzalloc(sizeof(*fpi), GFP_KERNEL);
1230         if (!fpi)
1231                 return -ENOMEM;
1232
1233         if (!IS_FEC(match)) {
1234                 data = of_get_property(ofdev->node, "fsl,cpm-command", &len);
1235                 if (!data || len != 4)
1236                         goto out_free_fpi;
1237
1238                 fpi->cp_command = *data;
1239         }
1240
1241         fpi->rx_ring = 32;
1242         fpi->tx_ring = 32;
1243         fpi->rx_copybreak = 240;
1244         fpi->use_napi = 1;
1245         fpi->napi_weight = 17;
1246
1247         ret = find_phy(ofdev->node, fpi);
1248         if (ret)
1249                 goto out_free_fpi;
1250
1251         privsize = sizeof(*fep) +
1252                    sizeof(struct sk_buff **) *
1253                    (fpi->rx_ring + fpi->tx_ring);
1254
1255         ndev = alloc_etherdev(privsize);
1256         if (!ndev) {
1257                 ret = -ENOMEM;
1258                 goto out_free_fpi;
1259         }
1260
1261         dev_set_drvdata(&ofdev->dev, ndev);
1262
1263         fep = netdev_priv(ndev);
1264         fep->dev = &ofdev->dev;
1265         fep->ndev = ndev;
1266         fep->fpi = fpi;
1267         fep->ops = match->data;
1268
1269         ret = fep->ops->setup_data(ndev);
1270         if (ret)
1271                 goto out_free_dev;
1272
1273         fep->rx_skbuff = (struct sk_buff **)&fep[1];
1274         fep->tx_skbuff = fep->rx_skbuff + fpi->rx_ring;
1275
1276         spin_lock_init(&fep->lock);
1277         spin_lock_init(&fep->tx_lock);
1278
1279         mac_addr = of_get_mac_address(ofdev->node);
1280         if (mac_addr)
1281                 memcpy(ndev->dev_addr, mac_addr, 6);
1282
1283         ret = fep->ops->allocate_bd(ndev);
1284         if (ret)
1285                 goto out_cleanup_data;
1286
1287         fep->rx_bd_base = fep->ring_base;
1288         fep->tx_bd_base = fep->rx_bd_base + fpi->rx_ring;
1289
1290         fep->tx_ring = fpi->tx_ring;
1291         fep->rx_ring = fpi->rx_ring;
1292
1293         ndev->open = fs_enet_open;
1294         ndev->hard_start_xmit = fs_enet_start_xmit;
1295         ndev->tx_timeout = fs_timeout;
1296         ndev->watchdog_timeo = 2 * HZ;
1297         ndev->stop = fs_enet_close;
1298         ndev->get_stats = fs_enet_get_stats;
1299         ndev->set_multicast_list = fs_set_multicast_list;
1300
1301         if (fpi->use_napi)
1302                 netif_napi_add(ndev, &fep->napi, fs_enet_rx_napi,
1303                                fpi->napi_weight);
1304
1305         ndev->ethtool_ops = &fs_ethtool_ops;
1306         ndev->do_ioctl = fs_ioctl;
1307
1308         init_timer(&fep->phy_timer_list);
1309
1310         netif_carrier_off(ndev);
1311
1312         ret = register_netdev(ndev);
1313         if (ret)
1314                 goto out_free_bd;
1315
1316         printk(KERN_INFO "%s: fs_enet: %02x:%02x:%02x:%02x:%02x:%02x\n",
1317                ndev->name,
1318                ndev->dev_addr[0], ndev->dev_addr[1], ndev->dev_addr[2],
1319                ndev->dev_addr[3], ndev->dev_addr[4], ndev->dev_addr[5]);
1320
1321         return 0;
1322
1323 out_free_bd:
1324         fep->ops->free_bd(ndev);
1325 out_cleanup_data:
1326         fep->ops->cleanup_data(ndev);
1327 out_free_dev:
1328         free_netdev(ndev);
1329         dev_set_drvdata(&ofdev->dev, NULL);
1330 out_free_fpi:
1331         kfree(fpi);
1332         return ret;
1333 }
1334
1335 static int fs_enet_remove(struct of_device *ofdev)
1336 {
1337         struct net_device *ndev = dev_get_drvdata(&ofdev->dev);
1338         struct fs_enet_private *fep = netdev_priv(ndev);
1339
1340         unregister_netdev(ndev);
1341
1342         fep->ops->free_bd(ndev);
1343         fep->ops->cleanup_data(ndev);
1344         dev_set_drvdata(fep->dev, NULL);
1345
1346         free_netdev(ndev);
1347         return 0;
1348 }
1349
1350 static struct of_device_id fs_enet_match[] = {
1351 #ifdef CONFIG_FS_ENET_HAS_SCC
1352         {
1353                 .compatible = "fsl,cpm1-scc-enet",
1354                 .data = (void *)&fs_scc_ops,
1355         },
1356 #endif
1357 #ifdef CONFIG_FS_ENET_HAS_FCC
1358         {
1359                 .compatible = "fsl,cpm2-fcc-enet",
1360                 .data = (void *)&fs_fcc_ops,
1361         },
1362 #endif
1363 #ifdef CONFIG_FS_ENET_HAS_FEC
1364         {
1365                 .compatible = "fsl,pq1-fec-enet",
1366                 .data = (void *)&fs_fec_ops,
1367         },
1368 #endif
1369         {}
1370 };
1371
1372 static struct of_platform_driver fs_enet_driver = {
1373         .name   = "fs_enet",
1374         .match_table = fs_enet_match,
1375         .probe = fs_enet_probe,
1376         .remove = fs_enet_remove,
1377 };
1378
1379 static int __init fs_init(void)
1380 {
1381         int r = setup_immap();
1382         if (r != 0)
1383                 return r;
1384
1385         r = of_register_platform_driver(&fs_enet_driver);
1386         if (r != 0)
1387                 goto out;
1388
1389         return 0;
1390
1391 out:
1392         cleanup_immap();
1393         return r;
1394 }
1395
1396 static void __exit fs_cleanup(void)
1397 {
1398         of_unregister_platform_driver(&fs_enet_driver);
1399         cleanup_immap();
1400 }
1401 #else
1402 static int __devinit fs_enet_probe(struct device *dev)
1403 {
1404         struct net_device *ndev;
1405
1406         /* no fixup - no device */
1407         if (dev->platform_data == NULL) {
1408                 printk(KERN_INFO "fs_enet: "
1409                                 "probe called with no platform data; "
1410                                 "remove unused devices\n");
1411                 return -ENODEV;
1412         }
1413
1414         ndev = fs_init_instance(dev, dev->platform_data);
1415         if (IS_ERR(ndev))
1416                 return PTR_ERR(ndev);
1417         return 0;
1418 }
1419
1420 static int fs_enet_remove(struct device *dev)
1421 {
1422         return fs_cleanup_instance(dev_get_drvdata(dev));
1423 }
1424
1425 static struct device_driver fs_enet_fec_driver = {
1426         .name           = "fsl-cpm-fec",
1427         .bus            = &platform_bus_type,
1428         .probe          = fs_enet_probe,
1429         .remove         = fs_enet_remove,
1430 #ifdef CONFIG_PM
1431 /*      .suspend        = fs_enet_suspend,      TODO */
1432 /*      .resume         = fs_enet_resume,       TODO */
1433 #endif
1434 };
1435
1436 static struct device_driver fs_enet_scc_driver = {
1437         .name           = "fsl-cpm-scc",
1438         .bus            = &platform_bus_type,
1439         .probe          = fs_enet_probe,
1440         .remove         = fs_enet_remove,
1441 #ifdef CONFIG_PM
1442 /*      .suspend        = fs_enet_suspend,      TODO */
1443 /*      .resume         = fs_enet_resume,       TODO */
1444 #endif
1445 };
1446
1447 static struct device_driver fs_enet_fcc_driver = {
1448         .name           = "fsl-cpm-fcc",
1449         .bus            = &platform_bus_type,
1450         .probe          = fs_enet_probe,
1451         .remove         = fs_enet_remove,
1452 #ifdef CONFIG_PM
1453 /*      .suspend        = fs_enet_suspend,      TODO */
1454 /*      .resume         = fs_enet_resume,       TODO */
1455 #endif
1456 };
1457
1458 static int __init fs_init(void)
1459 {
1460         int r;
1461
1462         printk(KERN_INFO
1463                         "%s", version);
1464
1465         r = setup_immap();
1466         if (r != 0)
1467                 return r;
1468
1469 #ifdef CONFIG_FS_ENET_HAS_FCC
1470         /* let's insert mii stuff */
1471         r = fs_enet_mdio_bb_init();
1472
1473         if (r != 0) {
1474                 printk(KERN_ERR DRV_MODULE_NAME
1475                         "BB PHY init failed.\n");
1476                 return r;
1477         }
1478         r = driver_register(&fs_enet_fcc_driver);
1479         if (r != 0)
1480                 goto err;
1481 #endif
1482
1483 #ifdef CONFIG_FS_ENET_HAS_FEC
1484         r =  fs_enet_mdio_fec_init();
1485         if (r != 0) {
1486                 printk(KERN_ERR DRV_MODULE_NAME
1487                         "FEC PHY init failed.\n");
1488                 return r;
1489         }
1490
1491         r = driver_register(&fs_enet_fec_driver);
1492         if (r != 0)
1493                 goto err;
1494 #endif
1495
1496 #ifdef CONFIG_FS_ENET_HAS_SCC
1497         r = driver_register(&fs_enet_scc_driver);
1498         if (r != 0)
1499                 goto err;
1500 #endif
1501
1502         return 0;
1503 err:
1504         cleanup_immap();
1505         return r;
1506 }
1507
1508 static void __exit fs_cleanup(void)
1509 {
1510         driver_unregister(&fs_enet_fec_driver);
1511         driver_unregister(&fs_enet_fcc_driver);
1512         driver_unregister(&fs_enet_scc_driver);
1513         cleanup_immap();
1514 }
1515 #endif
1516
1517 #ifdef CONFIG_NET_POLL_CONTROLLER
1518 static void fs_enet_netpoll(struct net_device *dev)
1519 {
1520        disable_irq(dev->irq);
1521        fs_enet_interrupt(dev->irq, dev, NULL);
1522        enable_irq(dev->irq);
1523 }
1524 #endif
1525
1526 /**************************************************************************************/
1527
1528 module_init(fs_init);
1529 module_exit(fs_cleanup);