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 \93AS IS\94 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_debug.h"
  60 #include "et131x_defs.h"
  61
  62 #include <linux/init.h>
  63 #include <linux/module.h>
  64 #include <linux/types.h>
  65 #include <linux/kernel.h>
  66
  67 #include <linux/sched.h>
  68 #include <linux/ptrace.h>
  69 #include <linux/slab.h>
  70 #include <linux/ctype.h>
  71 #include <linux/string.h>
  72 #include <linux/timer.h>
  73 #include <linux/interrupt.h>
  74 #include <linux/in.h>
  75 #include <linux/delay.h>
  76 #include <asm/io.h>
  77 #include <asm/system.h>
  78 #include <asm/bitops.h>
  79
  80 #include <linux/mii.h>
  81 #include <linux/netdevice.h>
  82 #include <linux/etherdevice.h>
  83 #include <linux/skbuff.h>
  84 #include <linux/if_arp.h>
  85 #include <linux/ioport.h>
  86
  87 #include "et1310_phy.h"
  88 #include "et1310_pm.h"
  89 #include "et1310_jagcore.h"
  90 #include "et1310_mac.h"
  91 #include "et1310_tx.h"
  92
  93 #include "et131x_adapter.h"
  94 #include "et131x_isr.h"
  95 #include "et131x_initpci.h"
  96
  97 /* Data for debugging facilities */
  98 #ifdef CONFIG_ET131X_DEBUG
  99 extern dbg_info_t *et131x_dbginfo;
 100 #endif /* CONFIG_ET131X_DEBUG */
 101
 102 struct net_device_stats *et131x_stats(struct net_device *netdev);
 103 int et131x_open(struct net_device *netdev);
 104 int et131x_close(struct net_device *netdev);
 105 int et131x_ioctl(struct net_device *netdev, struct ifreq *reqbuf, int cmd);
 106 void et131x_multicast(struct net_device *netdev);
 107 int et131x_tx(struct sk_buff *skb, struct net_device *netdev);
 108 void et131x_tx_timeout(struct net_device *netdev);
 109 int et131x_change_mtu(struct net_device *netdev, int new_mtu);
 110 int et131x_set_mac_addr(struct net_device *netdev, void *new_mac);
 111 void et131x_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp);
 112 void et131x_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid);
 113 void et131x_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid);
 114
 115 static const struct net_device_ops et131x_netdev_ops = {
 116         .ndo_open               = et131x_open,
 117         .ndo_stop               = et131x_close,
 118         .ndo_start_xmit         = et131x_tx,
 119         .ndo_set_multicast_list = et131x_multicast,
 120         .ndo_tx_timeout         = et131x_tx_timeout,
 121         .ndo_change_mtu         = et131x_change_mtu,
 122         .ndo_set_mac_address    = et131x_set_mac_addr,
 123         .ndo_validate_addr      = eth_validate_addr,
 124         .ndo_get_stats          = et131x_stats,
 125         .ndo_do_ioctl           = et131x_ioctl,
 126 };
 127
 128 /**
 129  * et131x_device_alloc
 130  *
 131  * Returns pointer to the allocated and initialized net_device struct for
 132  * this device.
 133  *
 134  * Create instances of net_device and wl_private for the new adapter and
 135  * register the device's entry points in the net_device structure.
 136  */
 137 struct net_device *et131x_device_alloc(void)
 138 {
 139         struct net_device *netdev;
 140
 141         DBG_ENTER(et131x_dbginfo);
 142
 143         /* Alloc net_device and adapter structs */
 144         netdev = alloc_etherdev(sizeof(struct et131x_adapter));
 145
 146         if (netdev == NULL) {
 147                 DBG_ERROR(et131x_dbginfo,
 148                           "Alloc of net_device struct failed\n");
 149                 DBG_LEAVE(et131x_dbginfo);
 150                 return NULL;
 151         }
 152
 153         /* Setup the function registration table (and other data) for a
 154          * net_device
 155          */
 156         //netdev->init               = &et131x_init;
 157         //netdev->set_config = &et131x_config;
 158         netdev->watchdog_timeo = ET131X_TX_TIMEOUT;
 159         netdev->netdev_ops = &et131x_netdev_ops;
 160
 161         //netdev->ethtool_ops        = &et131x_ethtool_ops;
 162
 163         // Poll?
 164         //netdev->poll               = &et131x_poll;
 165         //netdev->poll_controller    = &et131x_poll_controller;
 166
 167         DBG_LEAVE(et131x_dbginfo);
 168         return netdev;
 169 }
 170
 171 /**
 172  * et131x_stats - Return the current device statistics.
 173  * @netdev: device whose stats are being queried
 174  *
 175  * Returns 0 on success, errno on failure (as defined in errno.h)
 176  */
 177 struct net_device_stats *et131x_stats(struct net_device *netdev)
 178 {
 179         struct et131x_adapter *adapter = netdev_priv(netdev);
 180         struct net_device_stats *stats = &adapter->net_stats;
 181         CE_STATS_t *devstat = &adapter->Stats;
 182
 183         DBG_ENTER(et131x_dbginfo);
 184
 185         stats->rx_packets = devstat->ipackets;
 186         stats->tx_packets = devstat->opackets;
 187         stats->rx_errors = devstat->length_err + devstat->alignment_err +
 188             devstat->crc_err + devstat->code_violations + devstat->other_errors;
 189         stats->tx_errors = devstat->max_pkt_error;
 190         stats->multicast = devstat->multircv;
 191         stats->collisions = devstat->collisions;
 192
 193         stats->rx_length_errors = devstat->length_err;
 194         stats->rx_over_errors = devstat->rx_ov_flow;
 195         stats->rx_crc_errors = devstat->crc_err;
 196
 197         // NOTE: These stats don't have corresponding values in CE_STATS, so we're
 198         //       going to have to update these directly from within the TX/RX code
 199         //stats->rx_bytes            = 20; //devstat->;
 200         //stats->tx_bytes            = 20; //devstat->;
 201         //stats->rx_dropped          = devstat->;
 202         //stats->tx_dropped          = devstat->;
 203
 204         // NOTE: Not used, can't find analogous statistics
 205         //stats->rx_frame_errors     = devstat->;
 206         //stats->rx_fifo_errors      = devstat->;
 207         //stats->rx_missed_errors    = devstat->;
 208
 209         //stats->tx_aborted_errors   = devstat->;
 210         //stats->tx_carrier_errors   = devstat->;
 211         //stats->tx_fifo_errors      = devstat->;
 212         //stats->tx_heartbeat_errors = devstat->;
 213         //stats->tx_window_errors    = devstat->;
 214
 215         DBG_LEAVE(et131x_dbginfo);
 216         return stats;
 217 }
 218
 219 /**
 220  * et131x_open - Open the device for use.
 221  * @netdev: device to be opened
 222  *
 223  * Returns 0 on success, errno on failure (as defined in errno.h)
 224  */
 225 int et131x_open(struct net_device *netdev)
 226 {
 227         int result = 0;
 228         struct et131x_adapter *adapter = netdev_priv(netdev);
 229
 230         DBG_ENTER(et131x_dbginfo);
 231
 232         /* Start the timer to track NIC errors */
 233         add_timer(&adapter->ErrorTimer);
 234
 235         /* Register our ISR */
 236         DBG_TRACE(et131x_dbginfo, "Registering ISR...\n");
 237
 238         result =
 239             request_irq(netdev->irq, et131x_isr, IRQF_SHARED, netdev->name,
 240                         netdev);
 241         if (result) {
 242                 DBG_ERROR(et131x_dbginfo, "Could not register ISR\n");
 243                 DBG_LEAVE(et131x_dbginfo);
 244                 return result;
 245         }
 246
 247         /* Enable the Tx and Rx DMA engines (if not already enabled) */
 248         et131x_rx_dma_enable(adapter);
 249         et131x_tx_dma_enable(adapter);
 250
 251         /* Enable device interrupts */
 252         et131x_enable_interrupts(adapter);
 253
 254         MP_SET_FLAG(adapter, fMP_ADAPTER_INTERRUPT_IN_USE);
 255
 256         /* We're ready to move some data, so start the queue */
 257         netif_start_queue(netdev);
 258
 259         DBG_LEAVE(et131x_dbginfo);
 260         return result;
 261 }
 262
 263 /**
 264  * et131x_close - Close the device
 265  * @netdev: device to be closed
 266  *
 267  * Returns 0 on success, errno on failure (as defined in errno.h)
 268  */
 269 int et131x_close(struct net_device *netdev)
 270 {
 271         struct et131x_adapter *adapter = netdev_priv(netdev);
 272
 273         DBG_ENTER(et131x_dbginfo);
 274
 275         /* First thing is to stop the queue */
 276         netif_stop_queue(netdev);
 277
 278         /* Stop the Tx and Rx DMA engines */
 279         et131x_rx_dma_disable(adapter);
 280         et131x_tx_dma_disable(adapter);
 281
 282         /* Disable device interrupts */
 283         et131x_disable_interrupts(adapter);
 284
 285         /* Deregistering ISR */
 286         MP_CLEAR_FLAG(adapter, fMP_ADAPTER_INTERRUPT_IN_USE);
 287
 288         DBG_TRACE(et131x_dbginfo, "Deregistering ISR...\n");
 289         free_irq(netdev->irq, netdev);
 290
 291         /* Stop the error timer */
 292         del_timer_sync(&adapter->ErrorTimer);
 293
 294         DBG_LEAVE(et131x_dbginfo);
 295         return 0;
 296 }
 297
 298 /**
 299  * et131x_ioctl_mii - The function which handles MII IOCTLs
 300  * @netdev: device on which the query is being made
 301  * @reqbuf: the request-specific data buffer
 302  * @cmd: the command request code
 303  *
 304  * Returns 0 on success, errno on failure (as defined in errno.h)
 305  */
 306 int et131x_ioctl_mii(struct net_device *netdev, struct ifreq *reqbuf, int cmd)
 307 {
 308         int status = 0;
 309         struct et131x_adapter *pAdapter = netdev_priv(netdev);
 310         struct mii_ioctl_data *data = if_mii(reqbuf);
 311
 312         DBG_ENTER(et131x_dbginfo);
 313
 314         switch (cmd) {
 315         case SIOCGMIIPHY:
 316                 DBG_VERBOSE(et131x_dbginfo, "SIOCGMIIPHY\n");
 317                 data->phy_id = pAdapter->Stats.xcvr_addr;
 318                 break;
 319
 320         case SIOCGMIIREG:
 321                 DBG_VERBOSE(et131x_dbginfo, "SIOCGMIIREG\n");
 322                 if (!capable(CAP_NET_ADMIN)) {
 323                         status = -EPERM;
 324                 } else {
 325                         status = MiRead(pAdapter,
 326                                         data->reg_num, &data->val_out);
 327                 }
 328                 break;
 329
 330         case SIOCSMIIREG:
 331                 DBG_VERBOSE(et131x_dbginfo, "SIOCSMIIREG\n");
 332                 if (!capable(CAP_NET_ADMIN)) {
 333                         status = -EPERM;
 334                 } else {
 335                         status = MiWrite(pAdapter, data->reg_num,
 336                                          data->val_in);
 337                 }
 338                 break;
 339
 340         default:
 341                 status = -EOPNOTSUPP;
 342         }
 343
 344         DBG_LEAVE(et131x_dbginfo);
 345         return status;
 346 }
 347
 348 /**
 349  * et131x_ioctl - The I/O Control handler for the driver
 350  * @netdev: device on which the control request is being made
 351  * @reqbuf: a pointer to the IOCTL request buffer
 352  * @cmd: the IOCTL command code
 353  *
 354  * Returns 0 on success, errno on failure (as defined in errno.h)
 355  */
 356 int et131x_ioctl(struct net_device *netdev, struct ifreq *reqbuf, int cmd)
 357 {
 358         int status = 0;
 359
 360         DBG_ENTER(et131x_dbginfo);
 361
 362         switch (cmd) {
 363         case SIOCGMIIPHY:
 364         case SIOCGMIIREG:
 365         case SIOCSMIIREG:
 366                 status = et131x_ioctl_mii(netdev, reqbuf, cmd);
 367                 break;
 368
 369         default:
 370                 DBG_WARNING(et131x_dbginfo, "Unhandled IOCTL Code: 0x%04x\n",
 371                             cmd);
 372                 status = -EOPNOTSUPP;
 373         }
 374
 375         DBG_LEAVE(et131x_dbginfo);
 376         return status;
 377 }
 378
 379 /**
 380  * et131x_set_packet_filter - Configures the Rx Packet filtering on the device
 381  * @adapter: pointer to our private adapter structure
 382  *
 383  * Returns 0 on success, errno on failure
 384  */
 385 int et131x_set_packet_filter(struct et131x_adapter *adapter)
 386 {
 387         int status = 0;
 388         uint32_t filter = adapter->PacketFilter;
 389         RXMAC_CTRL_t ctrl;
 390         RXMAC_PF_CTRL_t pf_ctrl;
 391
 392         DBG_ENTER(et131x_dbginfo);
 393
 394         ctrl.value = readl(&adapter->CSRAddress->rxmac.ctrl.value);
 395         pf_ctrl.value = readl(&adapter->CSRAddress->rxmac.pf_ctrl.value);
 396
 397         /* Default to disabled packet filtering.  Enable it in the individual
 398          * case statements that require the device to filter something
 399          */
 400         ctrl.bits.pkt_filter_disable = 1;
 401
 402         /* Set us to be in promiscuous mode so we receive everything, this
 403          * is also true when we get a packet filter of 0
 404          */
 405         if ((filter & ET131X_PACKET_TYPE_PROMISCUOUS) || filter == 0) {
 406                 pf_ctrl.bits.filter_broad_en = 0;
 407                 pf_ctrl.bits.filter_multi_en = 0;
 408                 pf_ctrl.bits.filter_uni_en = 0;
 409         } else {
 410                 /*
 411                  * Set us up with Multicast packet filtering.  Three cases are
 412                  * possible - (1) we have a multi-cast list, (2) we receive ALL
 413                  * multicast entries or (3) we receive none.
 414                  */
 415                 if (filter & ET131X_PACKET_TYPE_ALL_MULTICAST) {
 416                         DBG_VERBOSE(et131x_dbginfo,
 417                                     "Multicast filtering OFF (Rx ALL MULTICAST)\n");
 418                         pf_ctrl.bits.filter_multi_en = 0;
 419                 } else {
 420                         DBG_VERBOSE(et131x_dbginfo, "Multicast filtering ON\n");
 421                         SetupDeviceForMulticast(adapter);
 422                         pf_ctrl.bits.filter_multi_en = 1;
 423                         ctrl.bits.pkt_filter_disable = 0;
 424                 }
 425
 426                 /* Set us up with Unicast packet filtering */
 427                 if (filter & ET131X_PACKET_TYPE_DIRECTED) {
 428                         DBG_VERBOSE(et131x_dbginfo, "Unicast Filtering ON\n");
 429                         SetupDeviceForUnicast(adapter);
 430                         pf_ctrl.bits.filter_uni_en = 1;
 431                         ctrl.bits.pkt_filter_disable = 0;
 432                 }
 433
 434                 /* Set us up with Broadcast packet filtering */
 435                 if (filter & ET131X_PACKET_TYPE_BROADCAST) {
 436                         DBG_VERBOSE(et131x_dbginfo, "Broadcast Filtering ON\n");
 437                         pf_ctrl.bits.filter_broad_en = 1;
 438                         ctrl.bits.pkt_filter_disable = 0;
 439                 } else {
 440                         DBG_VERBOSE(et131x_dbginfo,
 441                                     "Broadcast Filtering OFF\n");
 442                         pf_ctrl.bits.filter_broad_en = 0;
 443                 }
 444
 445                 /* Setup the receive mac configuration registers - Packet
 446                  * Filter control + the enable / disable for packet filter
 447                  * in the control reg.
 448                  */
 449                 writel(pf_ctrl.value,
 450                        &adapter->CSRAddress->rxmac.pf_ctrl.value);
 451                 writel(ctrl.value, &adapter->CSRAddress->rxmac.ctrl.value);
 452         }
 453
 454         DBG_LEAVE(et131x_dbginfo);
 455         return status;
 456 }
 457
 458 /**
 459  * et131x_multicast - The handler to configure multicasting on the interface
 460  * @netdev: a pointer to a net_device struct representing the device
 461  */
 462 void et131x_multicast(struct net_device *netdev)
 463 {
 464         struct et131x_adapter *adapter = netdev_priv(netdev);
 465         uint32_t PacketFilter = 0;
 466         uint32_t count;
 467         unsigned long lockflags;
 468         struct dev_mc_list *mclist = netdev->mc_list;
 469
 470         DBG_ENTER(et131x_dbginfo);
 471
 472         spin_lock_irqsave(&adapter->Lock, lockflags);
 473
 474         /* Before we modify the platform-independent filter flags, store them
 475          * locally. This allows us to determine if anything's changed and if
 476          * we even need to bother the hardware
 477          */
 478         PacketFilter = adapter->PacketFilter;
 479
 480         /* Clear the 'multicast' flag locally; becuase we only have a single
 481          * flag to check multicast, and multiple multicast addresses can be
 482          * set, this is the easiest way to determine if more than one
 483          * multicast address is being set.
 484          */
 485         PacketFilter &= ~ET131X_PACKET_TYPE_MULTICAST;
 486
 487         /* Check the net_device flags and set the device independent flags
 488          * accordingly
 489          */
 490         DBG_VERBOSE(et131x_dbginfo,
 491                     "MULTICAST ADDR COUNT: %d\n", netdev->mc_count);
 492
 493         if (netdev->flags & IFF_PROMISC) {
 494                 DBG_VERBOSE(et131x_dbginfo, "Request: PROMISCUOUS MODE ON\n");
 495                 adapter->PacketFilter |= ET131X_PACKET_TYPE_PROMISCUOUS;
 496         } else {
 497                 DBG_VERBOSE(et131x_dbginfo, "Request: PROMISCUOUS MODE OFF\n");
 498                 adapter->PacketFilter &= ~ET131X_PACKET_TYPE_PROMISCUOUS;
 499         }
 500
 501         if (netdev->flags & IFF_ALLMULTI) {
 502                 DBG_VERBOSE(et131x_dbginfo, "Request: ACCEPT ALL MULTICAST\n");
 503                 adapter->PacketFilter |= ET131X_PACKET_TYPE_ALL_MULTICAST;
 504         }
 505
 506         if (netdev->mc_count > NIC_MAX_MCAST_LIST) {
 507                 DBG_WARNING(et131x_dbginfo,
 508                             "ACCEPT ALL MULTICAST for now, as there's more Multicast "
 509                             "addresses than the HW supports\n");
 510
 511                 adapter->PacketFilter |= ET131X_PACKET_TYPE_ALL_MULTICAST;
 512         }
 513
 514         if (netdev->mc_count < 1) {
 515                 DBG_VERBOSE(et131x_dbginfo, "Request: REJECT ALL MULTICAST\n");
 516                 adapter->PacketFilter &= ~ET131X_PACKET_TYPE_ALL_MULTICAST;
 517                 adapter->PacketFilter &= ~ET131X_PACKET_TYPE_MULTICAST;
 518         } else {
 519                 DBG_VERBOSE(et131x_dbginfo,
 520                             "Request: SET MULTICAST FILTER(S)\n");
 521                 adapter->PacketFilter |= ET131X_PACKET_TYPE_MULTICAST;
 522         }
 523
 524         /* Set values in the private adapter struct */
 525         adapter->MCAddressCount = netdev->mc_count;
 526
 527         if (netdev->mc_count) {
 528                 if (mclist->dmi_addrlen != ETH_ALEN) {
 529                         DBG_WARNING(et131x_dbginfo,
 530                                     "Multicast addrs are not ETH_ALEN in size\n");
 531                 } else {
 532                         count = netdev->mc_count - 1;
 533                         memcpy(adapter->MCList[count], mclist->dmi_addr,
 534                                ETH_ALEN);
 535                 }
 536         }
 537
 538         /* Are the new flags different from the previous ones? If not, then no
 539          * action is required
 540          *
 541          * NOTE - This block will always update the MCList with the hardware,
 542          *        even if the addresses aren't the same.
 543          */
 544         if (PacketFilter != adapter->PacketFilter) {
 545                 /* Call the device's filter function */
 546                 DBG_VERBOSE(et131x_dbginfo, "UPDATE REQUIRED, FLAGS changed\n");
 547
 548                 et131x_set_packet_filter(adapter);
 549         } else {
 550                 DBG_VERBOSE(et131x_dbginfo,
 551                             "NO UPDATE REQUIRED, FLAGS didn't change\n");
 552         }
 553
 554         spin_unlock_irqrestore(&adapter->Lock, lockflags);
 555
 556         DBG_LEAVE(et131x_dbginfo);
 557 }
 558
 559 /**
 560  * et131x_tx - The handler to tx a packet on the device
 561  * @skb: data to be Tx'd
 562  * @netdev: device on which data is to be Tx'd
 563  *
 564  * Returns 0 on success, errno on failure (as defined in errno.h)
 565  */
 566 int et131x_tx(struct sk_buff *skb, struct net_device *netdev)
 567 {
 568         int status = 0;
 569
 570         DBG_TX_ENTER(et131x_dbginfo);
 571
 572         /* Save the timestamp for the TX timeout watchdog */
 573         netdev->trans_start = jiffies;
 574
 575         /* Call the device-specific data Tx routine */
 576         status = et131x_send_packets(skb, netdev);
 577
 578         /* Check status and manage the netif queue if necessary */
 579         if (status != 0) {
 580                 if (status == -ENOMEM) {
 581                         DBG_VERBOSE(et131x_dbginfo,
 582                                     "OUT OF TCBs; STOP NETIF QUEUE\n");
 583
 584                         /* Put the queue to sleep until resources are
 585                          * available
 586                          */
 587                         netif_stop_queue(netdev);
 588                         status = NETDEV_TX_BUSY;
 589                 } else {
 590                         DBG_WARNING(et131x_dbginfo,
 591                                     "Misc error; drop packet\n");
 592                         status = NETDEV_TX_OK;
 593                 }
 594         }
 595
 596         DBG_TX_LEAVE(et131x_dbginfo);
 597         return status;
 598 }
 599
 600 /**
 601  * et131x_tx_timeout - Timeout handler
 602  * @netdev: a pointer to a net_device struct representing the device
 603  *
 604  * The handler called when a Tx request times out. The timeout period is
 605  * specified by the 'tx_timeo" element in the net_device structure (see
 606  * et131x_alloc_device() to see how this value is set).
 607  */
 608 void et131x_tx_timeout(struct net_device *netdev)
 609 {
 610         struct et131x_adapter *pAdapter = netdev_priv(netdev);
 611         PMP_TCB pMpTcb;
 612         unsigned long lockflags;
 613
 614         DBG_WARNING(et131x_dbginfo, "TX TIMEOUT\n");
 615
 616         /* Just skip this part if the adapter is doing link detection */
 617         if (MP_TEST_FLAG(pAdapter, fMP_ADAPTER_LINK_DETECTION)) {
 618                 DBG_ERROR(et131x_dbginfo, "Still doing link detection\n");
 619                 return;
 620         }
 621
 622         /* Any nonrecoverable hardware error?
 623          * Checks adapter->flags for any failure in phy reading
 624          */
 625         if (MP_TEST_FLAG(pAdapter, fMP_ADAPTER_NON_RECOVER_ERROR)) {
 626                 DBG_WARNING(et131x_dbginfo, "Non recoverable error - remove\n");
 627                 return;
 628         }
 629
 630         /* Hardware failure? */
 631         if (MP_TEST_FLAG(pAdapter, fMP_ADAPTER_HARDWARE_ERROR)) {
 632                 DBG_WARNING(et131x_dbginfo, "hardware error - reset\n");
 633                 return;
 634         }
 635
 636         /* Is send stuck? */
 637         spin_lock_irqsave(&pAdapter->TCBSendQLock, lockflags);
 638
 639         pMpTcb = pAdapter->TxRing.CurrSendHead;
 640
 641         if (pMpTcb != NULL) {
 642                 pMpTcb->Count++;
 643
 644                 if (pMpTcb->Count > NIC_SEND_HANG_THRESHOLD) {
 645 #ifdef CONFIG_ET131X_DEBUG
 646                         TX_STATUS_BLOCK_t txDmaComplete =
 647                             *(pAdapter->TxRing.pTxStatusVa);
 648                         PTX_DESC_ENTRY_t pDesc =
 649                             pAdapter->TxRing.pTxDescRingVa +
 650                             pMpTcb->WrIndex.bits.val;
 651 #endif
 652                         TX_DESC_ENTRY_t StuckDescriptors[10];
 653
 654                         if (pMpTcb->WrIndex.bits.val > 7) {
 655                                 memcpy(StuckDescriptors,
 656                                        pAdapter->TxRing.pTxDescRingVa +
 657                                        pMpTcb->WrIndex.bits.val - 6,
 658                                        sizeof(TX_DESC_ENTRY_t) * 10);
 659                         }
 660
 661                         spin_unlock_irqrestore(&pAdapter->TCBSendQLock,
 662                                                lockflags);
 663
 664                         DBG_WARNING(et131x_dbginfo,
 665                                     "Send stuck - reset.  pMpTcb->WrIndex %x, Flags 0x%08x\n",
 666                                     pMpTcb->WrIndex.bits.val,
 667                                     pMpTcb->Flags);
 668
 669                         DBG_WARNING(et131x_dbginfo,
 670                                     "pDesc 0x%08x, 0x%08x, 0x%08x, 0x%08x\n",
 671                                     pDesc->DataBufferPtrHigh,
 672                                     pDesc->DataBufferPtrLow, pDesc->word2.value,
 673                                     pDesc->word3.value);
 674
 675                         DBG_WARNING(et131x_dbginfo,
 676                                     "WbStatus 0x%08x\n", txDmaComplete.value);
 677
 678 #ifdef CONFIG_ET131X_DEBUG
 679                         DumpDeviceBlock(DBG_WARNING_ON, pAdapter, 0);
 680                         DumpDeviceBlock(DBG_WARNING_ON, pAdapter, 1);
 681                         DumpDeviceBlock(DBG_WARNING_ON, pAdapter, 3);
 682                         DumpDeviceBlock(DBG_WARNING_ON, pAdapter, 5);
 683 #endif
 684                         et131x_close(netdev);
 685                         et131x_open(netdev);
 686
 687                         return;
 688                 }
 689         }
 690
 691         spin_unlock_irqrestore(&pAdapter->TCBSendQLock, lockflags);
 692 }
 693
 694 /**
 695  * et131x_change_mtu - The handler called to change the MTU for the device
 696  * @netdev: device whose MTU is to be changed
 697  * @new_mtu: the desired MTU
 698  *
 699  * Returns 0 on success, errno on failure (as defined in errno.h)
 700  */
 701 int et131x_change_mtu(struct net_device *netdev, int new_mtu)
 702 {
 703         int result = 0;
 704         struct et131x_adapter *adapter = netdev_priv(netdev);
 705
 706         DBG_ENTER(et131x_dbginfo);
 707
 708         /* Make sure the requested MTU is valid */
 709         if (new_mtu == 0 || new_mtu > 9216) {
 710                 DBG_LEAVE(et131x_dbginfo);
 711                 return -EINVAL;
 712         }
 713
 714         /* Stop the netif queue */
 715         netif_stop_queue(netdev);
 716
 717         /* Stop the Tx and Rx DMA engines */
 718         et131x_rx_dma_disable(adapter);
 719         et131x_tx_dma_disable(adapter);
 720
 721         /* Disable device interrupts */
 722         et131x_disable_interrupts(adapter);
 723         et131x_handle_send_interrupt(adapter);
 724         et131x_handle_recv_interrupt(adapter);
 725
 726         /* Set the new MTU */
 727         netdev->mtu = new_mtu;
 728
 729         /* Free Rx DMA memory */
 730         et131x_adapter_memory_free(adapter);
 731
 732         /* Set the config parameter for Jumbo Packet support */
 733         adapter->RegistryJumboPacket = new_mtu + 14;
 734         et131x_soft_reset(adapter);
 735
 736         /* Alloc and init Rx DMA memory */
 737         result = et131x_adapter_memory_alloc(adapter);
 738         if (result != 0) {
 739                 DBG_WARNING(et131x_dbginfo,
 740                             "Change MTU failed; couldn't re-alloc DMA memory\n");
 741                 return result;
 742         }
 743
 744         et131x_init_send(adapter);
 745
 746         et131x_setup_hardware_properties(adapter);
 747         memcpy(netdev->dev_addr, adapter->CurrentAddress, ETH_ALEN);
 748
 749         /* Init the device with the new settings */
 750         et131x_adapter_setup(adapter);
 751
 752         /* Enable interrupts */
 753         if (MP_TEST_FLAG(adapter, fMP_ADAPTER_INTERRUPT_IN_USE)) {
 754                 et131x_enable_interrupts(adapter);
 755         }
 756
 757         /* Restart the Tx and Rx DMA engines */
 758         et131x_rx_dma_enable(adapter);
 759         et131x_tx_dma_enable(adapter);
 760
 761         /* Restart the netif queue */
 762         netif_wake_queue(netdev);
 763
 764         DBG_LEAVE(et131x_dbginfo);
 765         return result;
 766 }
 767
 768 /**
 769  * et131x_set_mac_addr - handler to change the MAC address for the device
 770  * @netdev: device whose MAC is to be changed
 771  * @new_mac: the desired MAC address
 772  *
 773  * Returns 0 on success, errno on failure (as defined in errno.h)
 774  *
 775  * IMPLEMENTED BY : blux http://berndlux.de 22.01.2007 21:14
 776  */
 777 int et131x_set_mac_addr(struct net_device *netdev, void *new_mac)
 778 {
 779         int result = 0;
 780         struct et131x_adapter *adapter = netdev_priv(netdev);
 781         struct sockaddr *address = new_mac;
 782
 783         DBG_ENTER(et131x_dbginfo);
 784         // begin blux
 785         // DBG_VERBOSE( et131x_dbginfo, "Function not implemented!!\n" );
 786
 787         if (adapter == NULL) {
 788                 DBG_LEAVE(et131x_dbginfo);
 789                 return -ENODEV;
 790         }
 791
 792         /* Make sure the requested MAC is valid */
 793         if (!is_valid_ether_addr(address->sa_data)) {
 794                 DBG_LEAVE(et131x_dbginfo);
 795                 return -EINVAL;
 796         }
 797
 798         /* Stop the netif queue */
 799         netif_stop_queue(netdev);
 800
 801         /* Stop the Tx and Rx DMA engines */
 802         et131x_rx_dma_disable(adapter);
 803         et131x_tx_dma_disable(adapter);
 804
 805         /* Disable device interrupts */
 806         et131x_disable_interrupts(adapter);
 807         et131x_handle_send_interrupt(adapter);
 808         et131x_handle_recv_interrupt(adapter);
 809
 810         /* Set the new MAC */
 811         // netdev->set_mac_address  = &new_mac;
 812         // netdev->mtu = new_mtu;
 813
 814         memcpy(netdev->dev_addr, address->sa_data, netdev->addr_len);
 815
 816         printk("%s: Setting MAC address to %02x:%02x:%02x:%02x:%02x:%02x\n",
 817                netdev->name, netdev->dev_addr[0], netdev->dev_addr[1],
 818                netdev->dev_addr[2], netdev->dev_addr[3], netdev->dev_addr[4],
 819                netdev->dev_addr[5]);
 820
 821         /* Free Rx DMA memory */
 822         et131x_adapter_memory_free(adapter);
 823
 824         /* Set the config parameter for Jumbo Packet support */
 825         // adapter->RegistryJumboPacket = new_mtu + 14;
 826         // blux: not needet here, w'll change the MAC
 827
 828         et131x_soft_reset(adapter);
 829
 830         /* Alloc and init Rx DMA memory */
 831         result = et131x_adapter_memory_alloc(adapter);
 832         if (result != 0) {
 833                 DBG_WARNING(et131x_dbginfo,
 834                             "Change MAC failed; couldn't re-alloc DMA memory\n");
 835                 return result;
 836         }
 837
 838         et131x_init_send(adapter);
 839
 840         et131x_setup_hardware_properties(adapter);
 841         // memcpy( netdev->dev_addr, adapter->CurrentAddress, ETH_ALEN );
 842         // blux: no, do not override our nice address
 843
 844         /* Init the device with the new settings */
 845         et131x_adapter_setup(adapter);
 846
 847         /* Enable interrupts */
 848         if (MP_TEST_FLAG(adapter, fMP_ADAPTER_INTERRUPT_IN_USE)) {
 849                 et131x_enable_interrupts(adapter);
 850         }
 851
 852         /* Restart the Tx and Rx DMA engines */
 853         et131x_rx_dma_enable(adapter);
 854         et131x_tx_dma_enable(adapter);
 855
 856         /* Restart the netif queue */
 857         netif_wake_queue(netdev);
 858
 859         DBG_LEAVE(et131x_dbginfo);
 860         return result;
 861 }