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 struct net_device_stats *et131x_stats(struct net_device *netdev);
  92 int et131x_open(struct net_device *netdev);
  93 int et131x_close(struct net_device *netdev);
  94 int et131x_ioctl(struct net_device *netdev, struct ifreq *reqbuf, int cmd);
  95 void et131x_multicast(struct net_device *netdev);
  96 int et131x_tx(struct sk_buff *skb, struct net_device *netdev);
  97 void et131x_tx_timeout(struct net_device *netdev);
  98 int et131x_change_mtu(struct net_device *netdev, int new_mtu);
  99 int et131x_set_mac_addr(struct net_device *netdev, void *new_mac);
 100 void et131x_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp);
 101 void et131x_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid);
 102 void et131x_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid);
 103
 104 static const struct net_device_ops et131x_netdev_ops = {
 105         .ndo_open               = et131x_open,
 106         .ndo_stop               = et131x_close,
 107         .ndo_start_xmit         = et131x_tx,
 108         .ndo_set_multicast_list = et131x_multicast,
 109         .ndo_tx_timeout         = et131x_tx_timeout,
 110         .ndo_change_mtu         = et131x_change_mtu,
 111         .ndo_set_mac_address    = et131x_set_mac_addr,
 112         .ndo_validate_addr      = eth_validate_addr,
 113         .ndo_get_stats          = et131x_stats,
 114         .ndo_do_ioctl           = et131x_ioctl,
 115 };
 116
 117 /**
 118  * et131x_device_alloc
 119  *
 120  * Returns pointer to the allocated and initialized net_device struct for
 121  * this device.
 122  *
 123  * Create instances of net_device and wl_private for the new adapter and
 124  * register the device's entry points in the net_device structure.
 125  */
 126 struct net_device *et131x_device_alloc(void)
 127 {
 128         struct net_device *netdev;
 129
 130         /* Alloc net_device and adapter structs */
 131         netdev = alloc_etherdev(sizeof(struct et131x_adapter));
 132
 133         if (netdev == NULL) {
 134                 printk(KERN_ERR "et131x: Alloc of net_device struct failed\n");
 135                 return NULL;
 136         }
 137
 138         /* Setup the function registration table (and other data) for a
 139          * net_device
 140          */
 141         /* netdev->init               = &et131x_init; */
 142         /* netdev->set_config = &et131x_config; */
 143         netdev->watchdog_timeo = ET131X_TX_TIMEOUT;
 144         netdev->netdev_ops = &et131x_netdev_ops;
 145
 146         /* netdev->ethtool_ops        = &et131x_ethtool_ops; */
 147
 148         /* Poll? */
 149         /* netdev->poll               = &et131x_poll; */
 150         /* netdev->poll_controller    = &et131x_poll_controller; */
 151         return netdev;
 152 }
 153
 154 /**
 155  * et131x_stats - Return the current device statistics.
 156  * @netdev: device whose stats are being queried
 157  *
 158  * Returns 0 on success, errno on failure (as defined in errno.h)
 159  */
 160 struct net_device_stats *et131x_stats(struct net_device *netdev)
 161 {
 162         struct et131x_adapter *adapter = netdev_priv(netdev);
 163         struct net_device_stats *stats = &adapter->net_stats;
 164         CE_STATS_t *devstat = &adapter->Stats;
 165
 166         stats->rx_packets = devstat->ipackets;
 167         stats->tx_packets = devstat->opackets;
 168         stats->rx_errors = devstat->length_err + devstat->alignment_err +
 169             devstat->crc_err + devstat->code_violations + devstat->other_errors;
 170         stats->tx_errors = devstat->max_pkt_error;
 171         stats->multicast = devstat->multircv;
 172         stats->collisions = devstat->collisions;
 173
 174         stats->rx_length_errors = devstat->length_err;
 175         stats->rx_over_errors = devstat->rx_ov_flow;
 176         stats->rx_crc_errors = devstat->crc_err;
 177
 178         /* NOTE: These stats don't have corresponding values in CE_STATS,
 179          * so we're going to have to update these directly from within the
 180          * TX/RX code
 181          */
 182         /* stats->rx_bytes            = 20; devstat->; */
 183         /* stats->tx_bytes            = 20;  devstat->; */
 184         /* stats->rx_dropped          = devstat->; */
 185         /* stats->tx_dropped          = devstat->; */
 186
 187         /*  NOTE: Not used, can't find analogous statistics */
 188         /* stats->rx_frame_errors     = devstat->; */
 189         /* stats->rx_fifo_errors      = devstat->; */
 190         /* stats->rx_missed_errors    = devstat->; */
 191
 192         /* stats->tx_aborted_errors   = devstat->; */
 193         /* stats->tx_carrier_errors   = devstat->; */
 194         /* stats->tx_fifo_errors      = devstat->; */
 195         /* stats->tx_heartbeat_errors = devstat->; */
 196         /* stats->tx_window_errors    = devstat->; */
 197         return stats;
 198 }
 199
 200 /**
 201  * et131x_open - Open the device for use.
 202  * @netdev: device to be opened
 203  *
 204  * Returns 0 on success, errno on failure (as defined in errno.h)
 205  */
 206 int et131x_open(struct net_device *netdev)
 207 {
 208         int result = 0;
 209         struct et131x_adapter *adapter = netdev_priv(netdev);
 210
 211         /* Start the timer to track NIC errors */
 212         add_timer(&adapter->ErrorTimer);
 213
 214         /* Register our IRQ */
 215         result = request_irq(netdev->irq, et131x_isr, IRQF_SHARED,
 216                                         netdev->name, netdev);
 217         if (result) {
 218                 dev_err(&adapter->pdev->dev, "c ould not register IRQ %d\n",
 219                         netdev->irq);
 220                 return result;
 221         }
 222
 223         /* Enable the Tx and Rx DMA engines (if not already enabled) */
 224         et131x_rx_dma_enable(adapter);
 225         et131x_tx_dma_enable(adapter);
 226
 227         /* Enable device interrupts */
 228         et131x_enable_interrupts(adapter);
 229
 230         adapter->Flags |= fMP_ADAPTER_INTERRUPT_IN_USE;
 231
 232         /* We're ready to move some data, so start the queue */
 233         netif_start_queue(netdev);
 234         return result;
 235 }
 236
 237 /**
 238  * et131x_close - Close the device
 239  * @netdev: device to be closed
 240  *
 241  * Returns 0 on success, errno on failure (as defined in errno.h)
 242  */
 243 int et131x_close(struct net_device *netdev)
 244 {
 245         struct et131x_adapter *adapter = netdev_priv(netdev);
 246
 247         /* First thing is to stop the queue */
 248         netif_stop_queue(netdev);
 249
 250         /* Stop the Tx and Rx DMA engines */
 251         et131x_rx_dma_disable(adapter);
 252         et131x_tx_dma_disable(adapter);
 253
 254         /* Disable device interrupts */
 255         et131x_disable_interrupts(adapter);
 256
 257         /* Deregistering ISR */
 258         adapter->Flags &= ~fMP_ADAPTER_INTERRUPT_IN_USE;
 259         free_irq(netdev->irq, netdev);
 260
 261         /* Stop the error timer */
 262         del_timer_sync(&adapter->ErrorTimer);
 263         return 0;
 264 }
 265
 266 /**
 267  * et131x_ioctl_mii - The function which handles MII IOCTLs
 268  * @netdev: device on which the query is being made
 269  * @reqbuf: the request-specific data buffer
 270  * @cmd: the command request code
 271  *
 272  * Returns 0 on success, errno on failure (as defined in errno.h)
 273  */
 274 int et131x_ioctl_mii(struct net_device *netdev, struct ifreq *reqbuf, int cmd)
 275 {
 276         int status = 0;
 277         struct et131x_adapter *etdev = netdev_priv(netdev);
 278         struct mii_ioctl_data *data = if_mii(reqbuf);
 279
 280         switch (cmd) {
 281         case SIOCGMIIPHY:
 282                 data->phy_id = etdev->Stats.xcvr_addr;
 283                 break;
 284
 285         case SIOCGMIIREG:
 286                 if (!capable(CAP_NET_ADMIN))
 287                         status = -EPERM;
 288                 else
 289                         status = MiRead(etdev,
 290                                         data->reg_num, &data->val_out);
 291                 break;
 292
 293         case SIOCSMIIREG:
 294                 if (!capable(CAP_NET_ADMIN))
 295                         status = -EPERM;
 296                 else
 297                         status = MiWrite(etdev, data->reg_num,
 298                                          data->val_in);
 299                 break;
 300
 301         default:
 302                 status = -EOPNOTSUPP;
 303         }
 304         return status;
 305 }
 306
 307 /**
 308  * et131x_ioctl - The I/O Control handler for the driver
 309  * @netdev: device on which the control request is being made
 310  * @reqbuf: a pointer to the IOCTL request buffer
 311  * @cmd: the IOCTL command code
 312  *
 313  * Returns 0 on success, errno on failure (as defined in errno.h)
 314  */
 315 int et131x_ioctl(struct net_device *netdev, struct ifreq *reqbuf, int cmd)
 316 {
 317         int status = 0;
 318
 319         switch (cmd) {
 320         case SIOCGMIIPHY:
 321         case SIOCGMIIREG:
 322         case SIOCSMIIREG:
 323                 status = et131x_ioctl_mii(netdev, reqbuf, cmd);
 324                 break;
 325
 326         default:
 327                 status = -EOPNOTSUPP;
 328         }
 329         return status;
 330 }
 331
 332 /**
 333  * et131x_set_packet_filter - Configures the Rx Packet filtering on the device
 334  * @adapter: pointer to our private adapter structure
 335  *
 336  * FIXME: lot of dups with MAC code
 337  *
 338  * Returns 0 on success, errno on failure
 339  */
 340 int et131x_set_packet_filter(struct et131x_adapter *adapter)
 341 {
 342         int status = 0;
 343         uint32_t filter = adapter->PacketFilter;
 344         u32 ctrl;
 345         u32 pf_ctrl;
 346
 347         ctrl = readl(&adapter->regs->rxmac.ctrl);
 348         pf_ctrl = readl(&adapter->regs->rxmac.pf_ctrl);
 349
 350         /* Default to disabled packet filtering.  Enable it in the individual
 351          * case statements that require the device to filter something
 352          */
 353         ctrl |= 0x04;
 354
 355         /* Set us to be in promiscuous mode so we receive everything, this
 356          * is also true when we get a packet filter of 0
 357          */
 358         if ((filter & ET131X_PACKET_TYPE_PROMISCUOUS) || filter == 0)
 359                 pf_ctrl &= ~7;  /* Clear filter bits */
 360         else {
 361                 /*
 362                  * Set us up with Multicast packet filtering.  Three cases are
 363                  * possible - (1) we have a multi-cast list, (2) we receive ALL
 364                  * multicast entries or (3) we receive none.
 365                  */
 366                 if (filter & ET131X_PACKET_TYPE_ALL_MULTICAST)
 367                         pf_ctrl &= ~2;  /* Multicast filter bit */
 368                 else {
 369                         SetupDeviceForMulticast(adapter);
 370                         pf_ctrl |= 2;
 371                         ctrl &= ~0x04;
 372                 }
 373
 374                 /* Set us up with Unicast packet filtering */
 375                 if (filter & ET131X_PACKET_TYPE_DIRECTED) {
 376                         SetupDeviceForUnicast(adapter);
 377                         pf_ctrl |= 4;
 378                         ctrl &= ~0x04;
 379                 }
 380
 381                 /* Set us up with Broadcast packet filtering */
 382                 if (filter & ET131X_PACKET_TYPE_BROADCAST) {
 383                         pf_ctrl |= 1;   /* Broadcast filter bit */
 384                         ctrl &= ~0x04;
 385                 } else
 386                         pf_ctrl &= ~1;
 387
 388                 /* Setup the receive mac configuration registers - Packet
 389                  * Filter control + the enable / disable for packet filter
 390                  * in the control reg.
 391                  */
 392                 writel(pf_ctrl, &adapter->regs->rxmac.pf_ctrl);
 393                 writel(ctrl, &adapter->regs->rxmac.ctrl);
 394         }
 395         return status;
 396 }
 397
 398 /**
 399  * et131x_multicast - The handler to configure multicasting on the interface
 400  * @netdev: a pointer to a net_device struct representing the device
 401  */
 402 void et131x_multicast(struct net_device *netdev)
 403 {
 404         struct et131x_adapter *adapter = netdev_priv(netdev);
 405         uint32_t PacketFilter = 0;
 406         unsigned long flags;
 407         struct netdev_hw_addr *ha;
 408         int i;
 409
 410         spin_lock_irqsave(&adapter->Lock, flags);
 411
 412         /* Before we modify the platform-independent filter flags, store them
 413          * locally. This allows us to determine if anything's changed and if
 414          * we even need to bother the hardware
 415          */
 416         PacketFilter = adapter->PacketFilter;
 417
 418         /* Clear the 'multicast' flag locally; because we only have a single
 419          * flag to check multicast, and multiple multicast addresses can be
 420          * set, this is the easiest way to determine if more than one
 421          * multicast address is being set.
 422          */
 423         PacketFilter &= ~ET131X_PACKET_TYPE_MULTICAST;
 424
 425         /* Check the net_device flags and set the device independent flags
 426          * accordingly
 427          */
 428
 429         if (netdev->flags & IFF_PROMISC)
 430                 adapter->PacketFilter |= ET131X_PACKET_TYPE_PROMISCUOUS;
 431         else
 432                 adapter->PacketFilter &= ~ET131X_PACKET_TYPE_PROMISCUOUS;
 433
 434         if (netdev->flags & IFF_ALLMULTI)
 435                 adapter->PacketFilter |= ET131X_PACKET_TYPE_ALL_MULTICAST;
 436
 437         if (netdev_mc_count(netdev) > NIC_MAX_MCAST_LIST)
 438                 adapter->PacketFilter |= ET131X_PACKET_TYPE_ALL_MULTICAST;
 439
 440         if (netdev_mc_count(netdev) < 1) {
 441                 adapter->PacketFilter &= ~ET131X_PACKET_TYPE_ALL_MULTICAST;
 442                 adapter->PacketFilter &= ~ET131X_PACKET_TYPE_MULTICAST;
 443         } else
 444                 adapter->PacketFilter |= ET131X_PACKET_TYPE_MULTICAST;
 445
 446         /* Set values in the private adapter struct */
 447         i = 0;
 448         netdev_for_each_mc_addr(ha, netdev) {
 449                 if (i == NIC_MAX_MCAST_LIST)
 450                         break;
 451                 memcpy(adapter->MCList[i++], ha->addr, ETH_ALEN);
 452         }
 453         adapter->MCAddressCount = i;
 454
 455         /* Are the new flags different from the previous ones? If not, then no
 456          * action is required
 457          *
 458          * NOTE - This block will always update the MCList with the hardware,
 459          *        even if the addresses aren't the same.
 460          */
 461         if (PacketFilter != adapter->PacketFilter) {
 462                 /* Call the device's filter function */
 463                 et131x_set_packet_filter(adapter);
 464         }
 465         spin_unlock_irqrestore(&adapter->Lock, flags);
 466 }
 467
 468 /**
 469  * et131x_tx - The handler to tx a packet on the device
 470  * @skb: data to be Tx'd
 471  * @netdev: device on which data is to be Tx'd
 472  *
 473  * Returns 0 on success, errno on failure (as defined in errno.h)
 474  */
 475 int et131x_tx(struct sk_buff *skb, struct net_device *netdev)
 476 {
 477         int status = 0;
 478
 479         /* Save the timestamp for the TX timeout watchdog */
 480         netdev->trans_start = jiffies;
 481
 482         /* Call the device-specific data Tx routine */
 483         status = et131x_send_packets(skb, netdev);
 484
 485         /* Check status and manage the netif queue if necessary */
 486         if (status != 0) {
 487                 if (status == -ENOMEM) {
 488                         /* Put the queue to sleep until resources are
 489                          * available
 490                          */
 491                         netif_stop_queue(netdev);
 492                         status = NETDEV_TX_BUSY;
 493                 } else {
 494                         status = NETDEV_TX_OK;
 495                 }
 496         }
 497         return status;
 498 }
 499
 500 /**
 501  * et131x_tx_timeout - Timeout handler
 502  * @netdev: a pointer to a net_device struct representing the device
 503  *
 504  * The handler called when a Tx request times out. The timeout period is
 505  * specified by the 'tx_timeo" element in the net_device structure (see
 506  * et131x_alloc_device() to see how this value is set).
 507  */
 508 void et131x_tx_timeout(struct net_device *netdev)
 509 {
 510         struct et131x_adapter *etdev = netdev_priv(netdev);
 511         struct tcb *tcb;
 512         unsigned long flags;
 513
 514         /* Just skip this part if the adapter is doing link detection */
 515         if (etdev->Flags & fMP_ADAPTER_LINK_DETECTION)
 516                 return;
 517
 518         /* Any nonrecoverable hardware error?
 519          * Checks adapter->flags for any failure in phy reading
 520          */
 521         if (etdev->Flags & fMP_ADAPTER_NON_RECOVER_ERROR)
 522                 return;
 523
 524         /* Hardware failure? */
 525         if (etdev->Flags & fMP_ADAPTER_HARDWARE_ERROR) {
 526                 dev_err(&etdev->pdev->dev, "hardware error - reset\n");
 527                 return;
 528         }
 529
 530         /* Is send stuck? */
 531         spin_lock_irqsave(&etdev->TCBSendQLock, flags);
 532
 533         tcb = etdev->tx_ring.send_head;
 534
 535         if (tcb != NULL) {
 536                 tcb->count++;
 537
 538                 if (tcb->count > NIC_SEND_HANG_THRESHOLD) {
 539                         spin_unlock_irqrestore(&etdev->TCBSendQLock,
 540                                                flags);
 541
 542                         dev_warn(&etdev->pdev->dev,
 543                                 "Send stuck - reset.  tcb->WrIndex %x, Flags 0x%08x\n",
 544                                 tcb->index,
 545                                 tcb->flags);
 546
 547                         et131x_close(netdev);
 548                         et131x_open(netdev);
 549
 550                         return;
 551                 }
 552         }
 553
 554         spin_unlock_irqrestore(&etdev->TCBSendQLock, flags);
 555 }
 556
 557 /**
 558  * et131x_change_mtu - The handler called to change the MTU for the device
 559  * @netdev: device whose MTU is to be changed
 560  * @new_mtu: the desired MTU
 561  *
 562  * Returns 0 on success, errno on failure (as defined in errno.h)
 563  */
 564 int et131x_change_mtu(struct net_device *netdev, int new_mtu)
 565 {
 566         int result = 0;
 567         struct et131x_adapter *adapter = netdev_priv(netdev);
 568
 569         /* Make sure the requested MTU is valid */
 570         if (new_mtu < 64 || new_mtu > 9216)
 571                 return -EINVAL;
 572
 573         /* Stop the netif queue */
 574         netif_stop_queue(netdev);
 575
 576         /* Stop the Tx and Rx DMA engines */
 577         et131x_rx_dma_disable(adapter);
 578         et131x_tx_dma_disable(adapter);
 579
 580         /* Disable device interrupts */
 581         et131x_disable_interrupts(adapter);
 582         et131x_handle_send_interrupt(adapter);
 583         et131x_handle_recv_interrupt(adapter);
 584
 585         /* Set the new MTU */
 586         netdev->mtu = new_mtu;
 587
 588         /* Free Rx DMA memory */
 589         et131x_adapter_memory_free(adapter);
 590
 591         /* Set the config parameter for Jumbo Packet support */
 592         adapter->RegistryJumboPacket = new_mtu + 14;
 593         et131x_soft_reset(adapter);
 594
 595         /* Alloc and init Rx DMA memory */
 596         result = et131x_adapter_memory_alloc(adapter);
 597         if (result != 0) {
 598                 dev_warn(&adapter->pdev->dev,
 599                         "Change MTU failed; couldn't re-alloc DMA memory\n");
 600                 return result;
 601         }
 602
 603         et131x_init_send(adapter);
 604
 605         et131x_hwaddr_init(adapter);
 606         memcpy(netdev->dev_addr, adapter->addr, ETH_ALEN);
 607
 608         /* Init the device with the new settings */
 609         et131x_adapter_setup(adapter);
 610
 611         /* Enable interrupts */
 612         if (adapter->Flags & fMP_ADAPTER_INTERRUPT_IN_USE)
 613                 et131x_enable_interrupts(adapter);
 614
 615         /* Restart the Tx and Rx DMA engines */
 616         et131x_rx_dma_enable(adapter);
 617         et131x_tx_dma_enable(adapter);
 618
 619         /* Restart the netif queue */
 620         netif_wake_queue(netdev);
 621         return result;
 622 }
 623
 624 /**
 625  * et131x_set_mac_addr - handler to change the MAC address for the device
 626  * @netdev: device whose MAC is to be changed
 627  * @new_mac: the desired MAC address
 628  *
 629  * Returns 0 on success, errno on failure (as defined in errno.h)
 630  *
 631  * IMPLEMENTED BY : blux http://berndlux.de 22.01.2007 21:14
 632  */
 633 int et131x_set_mac_addr(struct net_device *netdev, void *new_mac)
 634 {
 635         int result = 0;
 636         struct et131x_adapter *adapter = netdev_priv(netdev);
 637         struct sockaddr *address = new_mac;
 638
 639         /* begin blux */
 640
 641         if (adapter == NULL)
 642                 return -ENODEV;
 643
 644         /* Make sure the requested MAC is valid */
 645         if (!is_valid_ether_addr(address->sa_data))
 646                 return -EINVAL;
 647
 648         /* Stop the netif queue */
 649         netif_stop_queue(netdev);
 650
 651         /* Stop the Tx and Rx DMA engines */
 652         et131x_rx_dma_disable(adapter);
 653         et131x_tx_dma_disable(adapter);
 654
 655         /* Disable device interrupts */
 656         et131x_disable_interrupts(adapter);
 657         et131x_handle_send_interrupt(adapter);
 658         et131x_handle_recv_interrupt(adapter);
 659
 660         /* Set the new MAC */
 661         /* netdev->set_mac_address  = &new_mac; */
 662         /* netdev->mtu = new_mtu; */
 663
 664         memcpy(netdev->dev_addr, address->sa_data, netdev->addr_len);
 665
 666         printk(KERN_INFO "%s: Setting MAC address to %pM\n",
 667                         netdev->name, netdev->dev_addr);
 668
 669         /* Free Rx DMA memory */
 670         et131x_adapter_memory_free(adapter);
 671
 672         /* Set the config parameter for Jumbo Packet support */
 673         /* adapter->RegistryJumboPacket = new_mtu + 14; */
 674         /* blux: not needet here, we'll change the MAC */
 675
 676         et131x_soft_reset(adapter);
 677
 678         /* Alloc and init Rx DMA memory */
 679         result = et131x_adapter_memory_alloc(adapter);
 680         if (result != 0) {
 681                 dev_err(&adapter->pdev->dev,
 682                         "Change MAC failed; couldn't re-alloc DMA memory\n");
 683                 return result;
 684         }
 685
 686         et131x_init_send(adapter);
 687
 688         et131x_hwaddr_init(adapter);
 689
 690         /* Init the device with the new settings */
 691         et131x_adapter_setup(adapter);
 692
 693         /* Enable interrupts */
 694         if (adapter->Flags & fMP_ADAPTER_INTERRUPT_IN_USE)
 695                 et131x_enable_interrupts(adapter);
 696
 697         /* Restart the Tx and Rx DMA engines */
 698         et131x_rx_dma_enable(adapter);
 699         et131x_tx_dma_enable(adapter);
 700
 701         /* Restart the netif queue */
 702         netif_wake_queue(netdev);
 703         return result;
 704 }