drivers/staging/et131x/et131x_netdev.c

   1 /*
   2  * Agere Systems Inc.
   3  * 10/100/1000 Base-T Ethernet Driver for the ET1301 and ET131x series MACs
   4  *
   5  * Copyright © 2005 Agere Systems Inc.
   6  * All rights reserved.
   7  *   http://www.agere.com
   8  *
   9  *------------------------------------------------------------------------------
  10  *
  11  * et131x_netdev.c - Routines and data required by all Linux network devices.
  12  *
  13  *------------------------------------------------------------------------------
  14  *
  15  * SOFTWARE LICENSE
  16  *
  17  * This software is provided subject to the following terms and conditions,
  18  * which you should read carefully before using the software.  Using this
  19  * software indicates your acceptance of these terms and conditions.  If you do
  20  * not agree with these terms and conditions, do not use the software.
  21  *
  22  * Copyright © 2005 Agere Systems Inc.
  23  * All rights reserved.
  24  *
  25  * Redistribution and use in source or binary forms, with or without
  26  * modifications, are permitted provided that the following conditions are met:
  27  *
  28  * . Redistributions of source code must retain the above copyright notice, this
  29  *    list of conditions and the following Disclaimer as comments in the code as
  30  *    well as in the documentation and/or other materials provided with the
  31  *    distribution.
  32  *
  33  * . Redistributions in binary form must reproduce the above copyright notice,
  34  *    this list of conditions and the following Disclaimer in the documentation
  35  *    and/or other materials provided with the distribution.
  36  *
  37  * . Neither the name of Agere Systems Inc. nor the names of the contributors
  38  *    may be used to endorse or promote products derived from this software
  39  *    without specific prior written permission.
  40  *
  41  * Disclaimer
  42  *
  43  * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
  44  * INCLUDING, BUT NOT LIMITED TO, INFRINGEMENT AND THE IMPLIED WARRANTIES OF
  45  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  ANY
  46  * USE, MODIFICATION OR DISTRIBUTION OF THIS SOFTWARE IS SOLELY AT THE USERS OWN
  47  * RISK. IN NO EVENT SHALL AGERE SYSTEMS INC. OR CONTRIBUTORS BE LIABLE FOR ANY
  48  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  49  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  50  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  51  * ON ANY THEORY OF LIABILITY, INCLUDING, BUT NOT LIMITED TO, CONTRACT, STRICT
  52  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  53  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
  54  * DAMAGE.
  55  *
  56  */
  57
  58 #include "et131x_version.h"
  59 #include "et131x_defs.h"
  60
  61 #include <linux/init.h>
  62 #include <linux/module.h>
  63 #include <linux/types.h>
  64 #include <linux/kernel.h>
  65
  66 #include <linux/sched.h>
  67 #include <linux/ptrace.h>
  68 #include <linux/ctype.h>
  69 #include <linux/string.h>
  70 #include <linux/timer.h>
  71 #include <linux/interrupt.h>
  72 #include <linux/in.h>
  73 #include <linux/delay.h>
  74 #include <linux/io.h>
  75 #include <linux/bitops.h>
  76 #include <linux/pci.h>
  77 #include <asm/system.h>
  78
  79 #include <linux/mii.h>
  80 #include <linux/netdevice.h>
  81 #include <linux/etherdevice.h>
  82 #include <linux/skbuff.h>
  83 #include <linux/if_arp.h>
  84 #include <linux/ioport.h>
  85
  86 #include "et1310_phy.h"
  87 #include "et1310_tx.h"
  88 #include "et131x_adapter.h"
  89 #include "et131x.h"
  90
  91 /**
  92  * et131x_stats - Return the current device statistics.
  93  * @netdev: device whose stats are being queried
  94  *
  95  * Returns 0 on success, errno on failure (as defined in errno.h)
  96  */
  97 static struct net_device_stats *et131x_stats(struct net_device *netdev)
  98 {
  99         struct et131x_adapter *adapter = netdev_priv(netdev);
 100         struct net_device_stats *stats = &adapter->net_stats;
 101         struct ce_stats *devstat = &adapter->stats;
 102
 103         stats->rx_errors = devstat->length_err + devstat->alignment_err +
 104             devstat->crc_err + devstat->code_violations + devstat->other_errors;
 105         stats->tx_errors = devstat->max_pkt_error;
 106         stats->multicast = devstat->multircv;
 107         stats->collisions = devstat->collisions;
 108
 109         stats->rx_length_errors = devstat->length_err;
 110         stats->rx_over_errors = devstat->rx_ov_flow;
 111         stats->rx_crc_errors = devstat->crc_err;
 112
 113         /* NOTE: These stats don't have corresponding values in CE_STATS,
 114          * so we're going to have to update these directly from within the
 115          * TX/RX code
 116          */
 117         /* stats->rx_bytes            = 20; devstat->; */
 118         /* stats->tx_bytes            = 20;  devstat->; */
 119         /* stats->rx_dropped          = devstat->; */
 120         /* stats->tx_dropped          = devstat->; */
 121
 122         /*  NOTE: Not used, can't find analogous statistics */
 123         /* stats->rx_frame_errors     = devstat->; */
 124         /* stats->rx_fifo_errors      = devstat->; */
 125         /* stats->rx_missed_errors    = devstat->; */
 126
 127         /* stats->tx_aborted_errors   = devstat->; */
 128         /* stats->tx_carrier_errors   = devstat->; */
 129         /* stats->tx_fifo_errors      = devstat->; */
 130         /* stats->tx_heartbeat_errors = devstat->; */
 131         /* stats->tx_window_errors    = devstat->; */
 132         return stats;
 133 }
 134
 135 /**
 136  * et131x_open - Open the device for use.
 137  * @netdev: device to be opened
 138  *
 139  * Returns 0 on success, errno on failure (as defined in errno.h)
 140  */
 141 int et131x_open(struct net_device *netdev)
 142 {
 143         int result = 0;
 144         struct et131x_adapter *adapter = netdev_priv(netdev);
 145
 146         /* Start the timer to track NIC errors */
 147         add_timer(&adapter->ErrorTimer);
 148
 149         /* Register our IRQ */
 150         result = request_irq(netdev->irq, et131x_isr, IRQF_SHARED,
 151                                         netdev->name, netdev);
 152         if (result) {
 153                 dev_err(&adapter->pdev->dev, "c ould not register IRQ %d\n",
 154                         netdev->irq);
 155                 return result;
 156         }
 157
 158         /* Enable the Tx and Rx DMA engines (if not already enabled) */
 159         et131x_rx_dma_enable(adapter);
 160         et131x_tx_dma_enable(adapter);
 161
 162         /* Enable device interrupts */
 163         et131x_enable_interrupts(adapter);
 164
 165         adapter->flags |= fMP_ADAPTER_INTERRUPT_IN_USE;
 166
 167         /* We're ready to move some data, so start the queue */
 168         netif_start_queue(netdev);
 169         return result;
 170 }
 171
 172 /**
 173  * et131x_close - Close the device
 174  * @netdev: device to be closed
 175  *
 176  * Returns 0 on success, errno on failure (as defined in errno.h)
 177  */
 178 int et131x_close(struct net_device *netdev)
 179 {
 180         struct et131x_adapter *adapter = netdev_priv(netdev);
 181
 182         /* First thing is to stop the queue */
 183         netif_stop_queue(netdev);
 184
 185         /* Stop the Tx and Rx DMA engines */
 186         et131x_rx_dma_disable(adapter);
 187         et131x_tx_dma_disable(adapter);
 188
 189         /* Disable device interrupts */
 190         et131x_disable_interrupts(adapter);
 191
 192         /* Deregistering ISR */
 193         adapter->flags &= ~fMP_ADAPTER_INTERRUPT_IN_USE;
 194         free_irq(netdev->irq, netdev);
 195
 196         /* Stop the error timer */
 197         del_timer_sync(&adapter->ErrorTimer);
 198         return 0;
 199 }
 200
 201 /**
 202  * et131x_ioctl_mii - The function which handles MII IOCTLs
 203  * @netdev: device on which the query is being made
 204  * @reqbuf: the request-specific data buffer
 205  * @cmd: the command request code
 206  *
 207  * Returns 0 on success, errno on failure (as defined in errno.h)
 208  */
 209 int et131x_ioctl_mii(struct net_device *netdev, struct ifreq *reqbuf, int cmd)
 210 {
 211         int status = 0;
 212         struct et131x_adapter *etdev = netdev_priv(netdev);
 213         struct mii_ioctl_data *data = if_mii(reqbuf);
 214
 215         switch (cmd) {
 216         case SIOCGMIIPHY:
 217                 data->phy_id = etdev->stats.xcvr_addr;
 218                 break;
 219
 220         case SIOCGMIIREG:
 221                 if (!capable(CAP_NET_ADMIN))
 222                         status = -EPERM;
 223                 else
 224                         status = MiRead(etdev,
 225                                         data->reg_num, &data->val_out);
 226                 break;
 227
 228         case SIOCSMIIREG:
 229                 if (!capable(CAP_NET_ADMIN))
 230                         status = -EPERM;
 231                 else
 232                         status = MiWrite(etdev, data->reg_num,
 233                                          data->val_in);
 234                 break;
 235
 236         default:
 237                 status = -EOPNOTSUPP;
 238         }
 239         return status;
 240 }
 241
 242 /**
 243  * et131x_ioctl - The I/O Control handler for the driver
 244  * @netdev: device on which the control request is being made
 245  * @reqbuf: a pointer to the IOCTL request buffer
 246  * @cmd: the IOCTL command code
 247  *
 248  * Returns 0 on success, errno on failure (as defined in errno.h)
 249  */
 250 int et131x_ioctl(struct net_device *netdev, struct ifreq *reqbuf, int cmd)
 251 {
 252         int status = 0;
 253
 254         switch (cmd) {
 255         case SIOCGMIIPHY:
 256         case SIOCGMIIREG:
 257         case SIOCSMIIREG:
 258                 status = et131x_ioctl_mii(netdev, reqbuf, cmd);
 259                 break;
 260
 261         default:
 262                 status = -EOPNOTSUPP;
 263         }
 264         return status;
 265 }
 266
 267 /**
 268  * et131x_set_packet_filter - Configures the Rx Packet filtering on the device
 269  * @adapter: pointer to our private adapter structure
 270  *
 271  * FIXME: lot of dups with MAC code
 272  *
 273  * Returns 0 on success, errno on failure
 274  */
 275 int et131x_set_packet_filter(struct et131x_adapter *adapter)
 276 {
 277         int status = 0;
 278         uint32_t filter = adapter->PacketFilter;
 279         u32 ctrl;
 280         u32 pf_ctrl;
 281
 282         ctrl = readl(&adapter->regs->rxmac.ctrl);
 283         pf_ctrl = readl(&adapter->regs->rxmac.pf_ctrl);
 284
 285         /* Default to disabled packet filtering.  Enable it in the individual
 286          * case statements that require the device to filter something
 287          */
 288         ctrl |= 0x04;
 289
 290         /* Set us to be in promiscuous mode so we receive everything, this
 291          * is also true when we get a packet filter of 0
 292          */
 293         if ((filter & ET131X_PACKET_TYPE_PROMISCUOUS) || filter == 0)
 294                 pf_ctrl &= ~7;  /* Clear filter bits */
 295         else {
 296                 /*
 297                  * Set us up with Multicast packet filtering.  Three cases are
 298                  * possible - (1) we have a multi-cast list, (2) we receive ALL
 299                  * multicast entries or (3) we receive none.
 300                  */
 301                 if (filter & ET131X_PACKET_TYPE_ALL_MULTICAST)
 302                         pf_ctrl &= ~2;  /* Multicast filter bit */
 303                 else {
 304                         SetupDeviceForMulticast(adapter);
 305                         pf_ctrl |= 2;
 306                         ctrl &= ~0x04;
 307                 }
 308
 309                 /* Set us up with Unicast packet filtering */
 310                 if (filter & ET131X_PACKET_TYPE_DIRECTED) {
 311                         SetupDeviceForUnicast(adapter);
 312                         pf_ctrl |= 4;
 313                         ctrl &= ~0x04;
 314                 }
 315
 316                 /* Set us up with Broadcast packet filtering */
 317                 if (filter & ET131X_PACKET_TYPE_BROADCAST) {
 318                         pf_ctrl |= 1;   /* Broadcast filter bit */
 319                         ctrl &= ~0x04;
 320                 } else
 321                         pf_ctrl &= ~1;
 322
 323                 /* Setup the receive mac configuration registers - Packet
 324                  * Filter control + the enable / disable for packet filter
 325                  * in the control reg.
 326                  */
 327                 writel(pf_ctrl, &adapter->regs->rxmac.pf_ctrl);
 328                 writel(ctrl, &adapter->regs->rxmac.ctrl);
 329         }
 330         return status;
 331 }
 332
 333 /**
 334  * et131x_multicast - The handler to configure multicasting on the interface
 335  * @netdev: a pointer to a net_device struct representing the device
 336  */
 337 void et131x_multicast(struct net_device *netdev)
 338 {
 339         struct et131x_adapter *adapter = netdev_priv(netdev);
 340         uint32_t PacketFilter = 0;
 341         unsigned long flags;
 342         struct netdev_hw_addr *ha;
 343         int i;
 344
 345         spin_lock_irqsave(&adapter->Lock, flags);
 346
 347         /* Before we modify the platform-independent filter flags, store them
 348          * locally. This allows us to determine if anything's changed and if
 349          * we even need to bother the hardware
 350          */
 351         PacketFilter = adapter->PacketFilter;
 352
 353         /* Clear the 'multicast' flag locally; because we only have a single
 354          * flag to check multicast, and multiple multicast addresses can be
 355          * set, this is the easiest way to determine if more than one
 356          * multicast address is being set.
 357          */
 358         PacketFilter &= ~ET131X_PACKET_TYPE_MULTICAST;
 359
 360         /* Check the net_device flags and set the device independent flags
 361          * accordingly
 362          */
 363
 364         if (netdev->flags & IFF_PROMISC)
 365                 adapter->PacketFilter |= ET131X_PACKET_TYPE_PROMISCUOUS;
 366         else
 367                 adapter->PacketFilter &= ~ET131X_PACKET_TYPE_PROMISCUOUS;
 368
 369         if (netdev->flags & IFF_ALLMULTI)
 370                 adapter->PacketFilter |= ET131X_PACKET_TYPE_ALL_MULTICAST;
 371
 372         if (netdev_mc_count(netdev) > NIC_MAX_MCAST_LIST)
 373                 adapter->PacketFilter |= ET131X_PACKET_TYPE_ALL_MULTICAST;
 374
 375         if (netdev_mc_count(netdev) < 1) {
 376                 adapter->PacketFilter &= ~ET131X_PACKET_TYPE_ALL_MULTICAST;
 377                 adapter->PacketFilter &= ~ET131X_PACKET_TYPE_MULTICAST;
 378         } else
 379                 adapter->PacketFilter |= ET131X_PACKET_TYPE_MULTICAST;
 380
 381         /* Set values in the private adapter struct */
 382         i = 0;
 383         netdev_for_each_mc_addr(ha, netdev) {
 384                 if (i == NIC_MAX_MCAST_LIST)
 385                         break;
 386                 memcpy(adapter->MCList[i++], ha->addr, ETH_ALEN);
 387         }
 388         adapter->MCAddressCount = i;
 389
 390         /* Are the new flags different from the previous ones? If not, then no
 391          * action is required
 392          *
 393          * NOTE - This block will always update the MCList with the hardware,
 394          *        even if the addresses aren't the same.
 395          */
 396         if (PacketFilter != adapter->PacketFilter) {
 397                 /* Call the device's filter function */
 398                 et131x_set_packet_filter(adapter);
 399         }
 400         spin_unlock_irqrestore(&adapter->Lock, flags);
 401 }
 402
 403 /**
 404  * et131x_tx - The handler to tx a packet on the device
 405  * @skb: data to be Tx'd
 406  * @netdev: device on which data is to be Tx'd
 407  *
 408  * Returns 0 on success, errno on failure (as defined in errno.h)
 409  */
 410 int et131x_tx(struct sk_buff *skb, struct net_device *netdev)
 411 {
 412         int status = 0;
 413
 414         /* Save the timestamp for the TX timeout watchdog */
 415         netdev->trans_start = jiffies;
 416
 417         /* Call the device-specific data Tx routine */
 418         status = et131x_send_packets(skb, netdev);
 419
 420         /* Check status and manage the netif queue if necessary */
 421         if (status != 0) {
 422                 if (status == -ENOMEM) {
 423                         /* Put the queue to sleep until resources are
 424                          * available
 425                          */
 426                         netif_stop_queue(netdev);
 427                         status = NETDEV_TX_BUSY;
 428                 } else {
 429                         status = NETDEV_TX_OK;
 430                 }
 431         }
 432         return status;
 433 }
 434
 435 /**
 436  * et131x_tx_timeout - Timeout handler
 437  * @netdev: a pointer to a net_device struct representing the device
 438  *
 439  * The handler called when a Tx request times out. The timeout period is
 440  * specified by the 'tx_timeo" element in the net_device structure (see
 441  * et131x_alloc_device() to see how this value is set).
 442  */
 443 void et131x_tx_timeout(struct net_device *netdev)
 444 {
 445         struct et131x_adapter *etdev = netdev_priv(netdev);
 446         struct tcb *tcb;
 447         unsigned long flags;
 448
 449         /* Any nonrecoverable hardware error?
 450          * Checks adapter->flags for any failure in phy reading
 451          */
 452         if (etdev->flags & fMP_ADAPTER_NON_RECOVER_ERROR)
 453                 return;
 454
 455         /* Hardware failure? */
 456         if (etdev->flags & fMP_ADAPTER_HARDWARE_ERROR) {
 457                 dev_err(&etdev->pdev->dev, "hardware error - reset\n");
 458                 return;
 459         }
 460
 461         /* Is send stuck? */
 462         spin_lock_irqsave(&etdev->TCBSendQLock, flags);
 463
 464         tcb = etdev->tx_ring.send_head;
 465
 466         if (tcb != NULL) {
 467                 tcb->count++;
 468
 469                 if (tcb->count > NIC_SEND_HANG_THRESHOLD) {
 470                         spin_unlock_irqrestore(&etdev->TCBSendQLock,
 471                                                flags);
 472
 473                         dev_warn(&etdev->pdev->dev,
 474                                 "Send stuck - reset.  tcb->WrIndex %x, flags 0x%08x\n",
 475                                 tcb->index,
 476                                 tcb->flags);
 477
 478                         et131x_close(netdev);
 479                         et131x_open(netdev);
 480
 481                         return;
 482                 }
 483         }
 484
 485         spin_unlock_irqrestore(&etdev->TCBSendQLock, flags);
 486 }
 487
 488 /**
 489  * et131x_change_mtu - The handler called to change the MTU for the device
 490  * @netdev: device whose MTU is to be changed
 491  * @new_mtu: the desired MTU
 492  *
 493  * Returns 0 on success, errno on failure (as defined in errno.h)
 494  */
 495 int et131x_change_mtu(struct net_device *netdev, int new_mtu)
 496 {
 497         int result = 0;
 498         struct et131x_adapter *adapter = netdev_priv(netdev);
 499
 500         /* Make sure the requested MTU is valid */
 501         if (new_mtu < 64 || new_mtu > 9216)
 502                 return -EINVAL;
 503
 504         /* Stop the netif queue */
 505         netif_stop_queue(netdev);
 506
 507         /* Stop the Tx and Rx DMA engines */
 508         et131x_rx_dma_disable(adapter);
 509         et131x_tx_dma_disable(adapter);
 510
 511         /* Disable device interrupts */
 512         et131x_disable_interrupts(adapter);
 513         et131x_handle_send_interrupt(adapter);
 514         et131x_handle_recv_interrupt(adapter);
 515
 516         /* Set the new MTU */
 517         netdev->mtu = new_mtu;
 518
 519         /* Free Rx DMA memory */
 520         et131x_adapter_memory_free(adapter);
 521
 522         /* Set the config parameter for Jumbo Packet support */
 523         adapter->RegistryJumboPacket = new_mtu + 14;
 524         et131x_soft_reset(adapter);
 525
 526         /* Alloc and init Rx DMA memory */
 527         result = et131x_adapter_memory_alloc(adapter);
 528         if (result != 0) {
 529                 dev_warn(&adapter->pdev->dev,
 530                         "Change MTU failed; couldn't re-alloc DMA memory\n");
 531                 return result;
 532         }
 533
 534         et131x_init_send(adapter);
 535
 536         et131x_hwaddr_init(adapter);
 537         memcpy(netdev->dev_addr, adapter->addr, ETH_ALEN);
 538
 539         /* Init the device with the new settings */
 540         et131x_adapter_setup(adapter);
 541
 542         /* Enable interrupts */
 543         if (adapter->flags & fMP_ADAPTER_INTERRUPT_IN_USE)
 544                 et131x_enable_interrupts(adapter);
 545
 546         /* Restart the Tx and Rx DMA engines */
 547         et131x_rx_dma_enable(adapter);
 548         et131x_tx_dma_enable(adapter);
 549
 550         /* Restart the netif queue */
 551         netif_wake_queue(netdev);
 552         return result;
 553 }
 554
 555 /**
 556  * et131x_set_mac_addr - handler to change the MAC address for the device
 557  * @netdev: device whose MAC is to be changed
 558  * @new_mac: the desired MAC address
 559  *
 560  * Returns 0 on success, errno on failure (as defined in errno.h)
 561  *
 562  * IMPLEMENTED BY : blux http://berndlux.de 22.01.2007 21:14
 563  */
 564 int et131x_set_mac_addr(struct net_device *netdev, void *new_mac)
 565 {
 566         int result = 0;
 567         struct et131x_adapter *adapter = netdev_priv(netdev);
 568         struct sockaddr *address = new_mac;
 569
 570         /* begin blux */
 571
 572         if (adapter == NULL)
 573                 return -ENODEV;
 574
 575         /* Make sure the requested MAC is valid */
 576         if (!is_valid_ether_addr(address->sa_data))
 577                 return -EINVAL;
 578
 579         /* Stop the netif queue */
 580         netif_stop_queue(netdev);
 581
 582         /* Stop the Tx and Rx DMA engines */
 583         et131x_rx_dma_disable(adapter);
 584         et131x_tx_dma_disable(adapter);
 585
 586         /* Disable device interrupts */
 587         et131x_disable_interrupts(adapter);
 588         et131x_handle_send_interrupt(adapter);
 589         et131x_handle_recv_interrupt(adapter);
 590
 591         /* Set the new MAC */
 592         /* netdev->set_mac_address  = &new_mac; */
 593         /* netdev->mtu = new_mtu; */
 594
 595         memcpy(netdev->dev_addr, address->sa_data, netdev->addr_len);
 596
 597         printk(KERN_INFO "%s: Setting MAC address to %pM\n",
 598                         netdev->name, netdev->dev_addr);
 599
 600         /* Free Rx DMA memory */
 601         et131x_adapter_memory_free(adapter);
 602
 603         /* Set the config parameter for Jumbo Packet support */
 604         /* adapter->RegistryJumboPacket = new_mtu + 14; */
 605         /* blux: not needet here, we'll change the MAC */
 606
 607         et131x_soft_reset(adapter);
 608
 609         /* Alloc and init Rx DMA memory */
 610         result = et131x_adapter_memory_alloc(adapter);
 611         if (result != 0) {
 612                 dev_err(&adapter->pdev->dev,
 613                         "Change MAC failed; couldn't re-alloc DMA memory\n");
 614                 return result;
 615         }
 616
 617         et131x_init_send(adapter);
 618
 619         et131x_hwaddr_init(adapter);
 620
 621         /* Init the device with the new settings */
 622         et131x_adapter_setup(adapter);
 623
 624         /* Enable interrupts */
 625         if (adapter->flags & fMP_ADAPTER_INTERRUPT_IN_USE)
 626                 et131x_enable_interrupts(adapter);
 627
 628         /* Restart the Tx and Rx DMA engines */
 629         et131x_rx_dma_enable(adapter);
 630         et131x_tx_dma_enable(adapter);
 631
 632         /* Restart the netif queue */
 633         netif_wake_queue(netdev);
 634         return result;
 635 }
 636
 637 static const struct net_device_ops et131x_netdev_ops = {
 638         .ndo_open               = et131x_open,
 639         .ndo_stop               = et131x_close,
 640         .ndo_start_xmit         = et131x_tx,
 641         .ndo_set_multicast_list = et131x_multicast,
 642         .ndo_tx_timeout         = et131x_tx_timeout,
 643         .ndo_change_mtu         = et131x_change_mtu,
 644         .ndo_set_mac_address    = et131x_set_mac_addr,
 645         .ndo_validate_addr      = eth_validate_addr,
 646         .ndo_get_stats          = et131x_stats,
 647         .ndo_do_ioctl           = et131x_ioctl,
 648 };
 649
 650 /**
 651  * et131x_device_alloc
 652  *
 653  * Returns pointer to the allocated and initialized net_device struct for
 654  * this device.
 655  *
 656  * Create instances of net_device and wl_private for the new adapter and
 657  * register the device's entry points in the net_device structure.
 658  */
 659 struct net_device *et131x_device_alloc(void)
 660 {
 661         struct net_device *netdev;
 662
 663         /* Alloc net_device and adapter structs */
 664         netdev = alloc_etherdev(sizeof(struct et131x_adapter));
 665
 666         if (netdev == NULL) {
 667                 printk(KERN_ERR "et131x: Alloc of net_device struct failed\n");
 668                 return NULL;
 669         }
 670
 671         /* Setup the function registration table (and other data) for a
 672          * net_device
 673          */
 674         /* netdev->init               = &et131x_init; */
 675         /* netdev->set_config = &et131x_config; */
 676         netdev->watchdog_timeo = ET131X_TX_TIMEOUT;
 677         netdev->netdev_ops = &et131x_netdev_ops;
 678
 679         /* netdev->ethtool_ops        = &et131x_ethtool_ops; */
 680
 681         /* Poll? */
 682         /* netdev->poll               = &et131x_poll; */
 683         /* netdev->poll_controller    = &et131x_poll_controller; */
 684         return netdev;
 685 }
 686