drivers/net/wireless/libertas/main.c

   1 /**
   2   * This file contains the major functions in WLAN
   3   * driver. It includes init, exit, open, close and main
   4   * thread etc..
   5   */
   6
   7 #include <linux/moduleparam.h>
   8 #include <linux/delay.h>
   9 #include <linux/freezer.h>
  10 #include <linux/etherdevice.h>
  11 #include <linux/netdevice.h>
  12 #include <linux/if_arp.h>
  13 #include <linux/kthread.h>
  14
  15 #include <net/iw_handler.h>
  16 #include <net/ieee80211.h>
  17
  18 #include "host.h"
  19 #include "decl.h"
  20 #include "dev.h"
  21 #include "wext.h"
  22 #include "debugfs.h"
  23 #include "assoc.h"
  24 #include "join.h"
  25 #include "cmd.h"
  26
  27 #define DRIVER_RELEASE_VERSION "323.p0"
  28 const char lbs_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
  29 #ifdef  DEBUG
  30     "-dbg"
  31 #endif
  32     "";
  33
  34
  35 /* Module parameters */
  36 unsigned int lbs_debug;
  37 EXPORT_SYMBOL_GPL(lbs_debug);
  38 module_param_named(libertas_debug, lbs_debug, int, 0644);
  39
  40
  41 #define LBS_TX_PWR_DEFAULT              20      /*100mW */
  42 #define LBS_TX_PWR_US_DEFAULT           20      /*100mW */
  43 #define LBS_TX_PWR_JP_DEFAULT           16      /*50mW */
  44 #define LBS_TX_PWR_FR_DEFAULT           20      /*100mW */
  45 #define LBS_TX_PWR_EMEA_DEFAULT 20      /*100mW */
  46
  47 /* Format { channel, frequency (MHz), maxtxpower } */
  48 /* band: 'B/G', region: USA FCC/Canada IC */
  49 static struct chan_freq_power channel_freq_power_US_BG[] = {
  50         {1, 2412, LBS_TX_PWR_US_DEFAULT},
  51         {2, 2417, LBS_TX_PWR_US_DEFAULT},
  52         {3, 2422, LBS_TX_PWR_US_DEFAULT},
  53         {4, 2427, LBS_TX_PWR_US_DEFAULT},
  54         {5, 2432, LBS_TX_PWR_US_DEFAULT},
  55         {6, 2437, LBS_TX_PWR_US_DEFAULT},
  56         {7, 2442, LBS_TX_PWR_US_DEFAULT},
  57         {8, 2447, LBS_TX_PWR_US_DEFAULT},
  58         {9, 2452, LBS_TX_PWR_US_DEFAULT},
  59         {10, 2457, LBS_TX_PWR_US_DEFAULT},
  60         {11, 2462, LBS_TX_PWR_US_DEFAULT}
  61 };
  62
  63 /* band: 'B/G', region: Europe ETSI */
  64 static struct chan_freq_power channel_freq_power_EU_BG[] = {
  65         {1, 2412, LBS_TX_PWR_EMEA_DEFAULT},
  66         {2, 2417, LBS_TX_PWR_EMEA_DEFAULT},
  67         {3, 2422, LBS_TX_PWR_EMEA_DEFAULT},
  68         {4, 2427, LBS_TX_PWR_EMEA_DEFAULT},
  69         {5, 2432, LBS_TX_PWR_EMEA_DEFAULT},
  70         {6, 2437, LBS_TX_PWR_EMEA_DEFAULT},
  71         {7, 2442, LBS_TX_PWR_EMEA_DEFAULT},
  72         {8, 2447, LBS_TX_PWR_EMEA_DEFAULT},
  73         {9, 2452, LBS_TX_PWR_EMEA_DEFAULT},
  74         {10, 2457, LBS_TX_PWR_EMEA_DEFAULT},
  75         {11, 2462, LBS_TX_PWR_EMEA_DEFAULT},
  76         {12, 2467, LBS_TX_PWR_EMEA_DEFAULT},
  77         {13, 2472, LBS_TX_PWR_EMEA_DEFAULT}
  78 };
  79
  80 /* band: 'B/G', region: Spain */
  81 static struct chan_freq_power channel_freq_power_SPN_BG[] = {
  82         {10, 2457, LBS_TX_PWR_DEFAULT},
  83         {11, 2462, LBS_TX_PWR_DEFAULT}
  84 };
  85
  86 /* band: 'B/G', region: France */
  87 static struct chan_freq_power channel_freq_power_FR_BG[] = {
  88         {10, 2457, LBS_TX_PWR_FR_DEFAULT},
  89         {11, 2462, LBS_TX_PWR_FR_DEFAULT},
  90         {12, 2467, LBS_TX_PWR_FR_DEFAULT},
  91         {13, 2472, LBS_TX_PWR_FR_DEFAULT}
  92 };
  93
  94 /* band: 'B/G', region: Japan */
  95 static struct chan_freq_power channel_freq_power_JPN_BG[] = {
  96         {1, 2412, LBS_TX_PWR_JP_DEFAULT},
  97         {2, 2417, LBS_TX_PWR_JP_DEFAULT},
  98         {3, 2422, LBS_TX_PWR_JP_DEFAULT},
  99         {4, 2427, LBS_TX_PWR_JP_DEFAULT},
 100         {5, 2432, LBS_TX_PWR_JP_DEFAULT},
 101         {6, 2437, LBS_TX_PWR_JP_DEFAULT},
 102         {7, 2442, LBS_TX_PWR_JP_DEFAULT},
 103         {8, 2447, LBS_TX_PWR_JP_DEFAULT},
 104         {9, 2452, LBS_TX_PWR_JP_DEFAULT},
 105         {10, 2457, LBS_TX_PWR_JP_DEFAULT},
 106         {11, 2462, LBS_TX_PWR_JP_DEFAULT},
 107         {12, 2467, LBS_TX_PWR_JP_DEFAULT},
 108         {13, 2472, LBS_TX_PWR_JP_DEFAULT},
 109         {14, 2484, LBS_TX_PWR_JP_DEFAULT}
 110 };
 111
 112 /**
 113  * the structure for channel, frequency and power
 114  */
 115 struct region_cfp_table {
 116         u8 region;
 117         struct chan_freq_power *cfp_BG;
 118         int cfp_no_BG;
 119 };
 120
 121 /**
 122  * the structure for the mapping between region and CFP
 123  */
 124 static struct region_cfp_table region_cfp_table[] = {
 125         {0x10,                  /*US FCC */
 126          channel_freq_power_US_BG,
 127          ARRAY_SIZE(channel_freq_power_US_BG),
 128          }
 129         ,
 130         {0x20,                  /*CANADA IC */
 131          channel_freq_power_US_BG,
 132          ARRAY_SIZE(channel_freq_power_US_BG),
 133          }
 134         ,
 135         {0x30, /*EU*/ channel_freq_power_EU_BG,
 136          ARRAY_SIZE(channel_freq_power_EU_BG),
 137          }
 138         ,
 139         {0x31, /*SPAIN*/ channel_freq_power_SPN_BG,
 140          ARRAY_SIZE(channel_freq_power_SPN_BG),
 141          }
 142         ,
 143         {0x32, /*FRANCE*/ channel_freq_power_FR_BG,
 144          ARRAY_SIZE(channel_freq_power_FR_BG),
 145          }
 146         ,
 147         {0x40, /*JAPAN*/ channel_freq_power_JPN_BG,
 148          ARRAY_SIZE(channel_freq_power_JPN_BG),
 149          }
 150         ,
 151 /*Add new region here */
 152 };
 153
 154 /**
 155  * the table to keep region code
 156  */
 157 u16 lbs_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
 158     { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
 159
 160 /**
 161  * 802.11b/g supported bitrates (in 500Kb/s units)
 162  */
 163 u8 lbs_bg_rates[MAX_RATES] =
 164     { 0x02, 0x04, 0x0b, 0x16, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
 165 0x00, 0x00 };
 166
 167 /**
 168  * FW rate table.  FW refers to rates by their index in this table, not by the
 169  * rate value itself.  Values of 0x00 are
 170  * reserved positions.
 171  */
 172 static u8 fw_data_rates[MAX_RATES] =
 173     { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,
 174       0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00
 175 };
 176
 177 /**
 178  *  @brief use index to get the data rate
 179  *
 180  *  @param idx                The index of data rate
 181  *  @return                     data rate or 0
 182  */
 183 u32 lbs_fw_index_to_data_rate(u8 idx)
 184 {
 185         if (idx >= sizeof(fw_data_rates))
 186                 idx = 0;
 187         return fw_data_rates[idx];
 188 }
 189
 190 /**
 191  *  @brief use rate to get the index
 192  *
 193  *  @param rate                 data rate
 194  *  @return                     index or 0
 195  */
 196 u8 lbs_data_rate_to_fw_index(u32 rate)
 197 {
 198         u8 i;
 199
 200         if (!rate)
 201                 return 0;
 202
 203         for (i = 0; i < sizeof(fw_data_rates); i++) {
 204                 if (rate == fw_data_rates[i])
 205                         return i;
 206         }
 207         return 0;
 208 }
 209
 210 /**
 211  * Attributes exported through sysfs
 212  */
 213
 214 /**
 215  * @brief Get function for sysfs attribute anycast_mask
 216  */
 217 static ssize_t lbs_anycast_get(struct device *dev,
 218                 struct device_attribute *attr, char * buf)
 219 {
 220         struct lbs_private *priv = to_net_dev(dev)->priv;
 221         struct cmd_ds_mesh_access mesh_access;
 222         int ret;
 223
 224         memset(&mesh_access, 0, sizeof(mesh_access));
 225
 226         ret = lbs_mesh_access(priv, CMD_ACT_MESH_GET_ANYCAST, &mesh_access);
 227         if (ret)
 228                 return ret;
 229
 230         return snprintf(buf, 12, "0x%X\n", le32_to_cpu(mesh_access.data[0]));
 231 }
 232
 233 /**
 234  * @brief Set function for sysfs attribute anycast_mask
 235  */
 236 static ssize_t lbs_anycast_set(struct device *dev,
 237                 struct device_attribute *attr, const char * buf, size_t count)
 238 {
 239         struct lbs_private *priv = to_net_dev(dev)->priv;
 240         struct cmd_ds_mesh_access mesh_access;
 241         uint32_t datum;
 242         int ret;
 243
 244         memset(&mesh_access, 0, sizeof(mesh_access));
 245         sscanf(buf, "%x", &datum);
 246         mesh_access.data[0] = cpu_to_le32(datum);
 247
 248         ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_ANYCAST, &mesh_access);
 249         if (ret)
 250                 return ret;
 251
 252         return strlen(buf);
 253 }
 254
 255 static int lbs_add_rtap(struct lbs_private *priv);
 256 static void lbs_remove_rtap(struct lbs_private *priv);
 257 static int lbs_add_mesh(struct lbs_private *priv);
 258 static void lbs_remove_mesh(struct lbs_private *priv);
 259
 260
 261 /**
 262  * Get function for sysfs attribute rtap
 263  */
 264 static ssize_t lbs_rtap_get(struct device *dev,
 265                 struct device_attribute *attr, char * buf)
 266 {
 267         struct lbs_private *priv = to_net_dev(dev)->priv;
 268         return snprintf(buf, 5, "0x%X\n", priv->monitormode);
 269 }
 270
 271 /**
 272  *  Set function for sysfs attribute rtap
 273  */
 274 static ssize_t lbs_rtap_set(struct device *dev,
 275                 struct device_attribute *attr, const char * buf, size_t count)
 276 {
 277         int monitor_mode;
 278         struct lbs_private *priv = to_net_dev(dev)->priv;
 279
 280         sscanf(buf, "%x", &monitor_mode);
 281         if (monitor_mode != LBS_MONITOR_OFF) {
 282                 if(priv->monitormode == monitor_mode)
 283                         return strlen(buf);
 284                 if (priv->monitormode == LBS_MONITOR_OFF) {
 285                         if (priv->infra_open || priv->mesh_open)
 286                                 return -EBUSY;
 287                         if (priv->mode == IW_MODE_INFRA)
 288                                 lbs_send_deauthentication(priv);
 289                         else if (priv->mode == IW_MODE_ADHOC)
 290                                 lbs_stop_adhoc_network(priv);
 291                         lbs_add_rtap(priv);
 292                 }
 293                 priv->monitormode = monitor_mode;
 294         }
 295
 296         else {
 297                 if (priv->monitormode == LBS_MONITOR_OFF)
 298                         return strlen(buf);
 299                 priv->monitormode = LBS_MONITOR_OFF;
 300                 lbs_remove_rtap(priv);
 301
 302                 if (priv->currenttxskb) {
 303                         dev_kfree_skb_any(priv->currenttxskb);
 304                         priv->currenttxskb = NULL;
 305                 }
 306
 307                 /* Wake queues, command thread, etc. */
 308                 lbs_host_to_card_done(priv);
 309         }
 310
 311         lbs_prepare_and_send_command(priv,
 312                         CMD_802_11_MONITOR_MODE, CMD_ACT_SET,
 313                         CMD_OPTION_WAITFORRSP, 0, &priv->monitormode);
 314         return strlen(buf);
 315 }
 316
 317 /**
 318  * lbs_rtap attribute to be exported per ethX interface
 319  * through sysfs (/sys/class/net/ethX/lbs_rtap)
 320  */
 321 static DEVICE_ATTR(lbs_rtap, 0644, lbs_rtap_get, lbs_rtap_set );
 322
 323 /**
 324  * Get function for sysfs attribute mesh
 325  */
 326 static ssize_t lbs_mesh_get(struct device *dev,
 327                 struct device_attribute *attr, char * buf)
 328 {
 329         struct lbs_private *priv = to_net_dev(dev)->priv;
 330         return snprintf(buf, 5, "0x%X\n", !!priv->mesh_dev);
 331 }
 332
 333 /**
 334  *  Set function for sysfs attribute mesh
 335  */
 336 static ssize_t lbs_mesh_set(struct device *dev,
 337                 struct device_attribute *attr, const char * buf, size_t count)
 338 {
 339         struct lbs_private *priv = to_net_dev(dev)->priv;
 340         int enable;
 341         int ret;
 342
 343         sscanf(buf, "%x", &enable);
 344         enable = !!enable;
 345         if (enable == !!priv->mesh_dev)
 346                 return count;
 347
 348         ret = lbs_mesh_config(priv, enable);
 349         if (ret)
 350                 return ret;
 351
 352         if (enable)
 353                 lbs_add_mesh(priv);
 354         else
 355                 lbs_remove_mesh(priv);
 356
 357         return count;
 358 }
 359
 360 /**
 361  * lbs_mesh attribute to be exported per ethX interface
 362  * through sysfs (/sys/class/net/ethX/lbs_mesh)
 363  */
 364 static DEVICE_ATTR(lbs_mesh, 0644, lbs_mesh_get, lbs_mesh_set);
 365
 366 /**
 367  * anycast_mask attribute to be exported per mshX interface
 368  * through sysfs (/sys/class/net/mshX/anycast_mask)
 369  */
 370 static DEVICE_ATTR(anycast_mask, 0644, lbs_anycast_get, lbs_anycast_set);
 371
 372 static struct attribute *lbs_mesh_sysfs_entries[] = {
 373         &dev_attr_anycast_mask.attr,
 374         NULL,
 375 };
 376
 377 static struct attribute_group lbs_mesh_attr_group = {
 378         .attrs = lbs_mesh_sysfs_entries,
 379 };
 380
 381 /**
 382  *  @brief This function opens the ethX or mshX interface
 383  *
 384  *  @param dev     A pointer to net_device structure
 385  *  @return        0 or -EBUSY if monitor mode active
 386  */
 387 static int lbs_dev_open(struct net_device *dev)
 388 {
 389         struct lbs_private *priv = (struct lbs_private *) dev->priv ;
 390         int ret = 0;
 391
 392         spin_lock_irq(&priv->driver_lock);
 393
 394         if (priv->monitormode != LBS_MONITOR_OFF) {
 395                 ret = -EBUSY;
 396                 goto out;
 397         }
 398
 399         if (dev == priv->mesh_dev) {
 400                 priv->mesh_open = 1;
 401                 priv->mesh_connect_status = LBS_CONNECTED;
 402                 netif_carrier_on(dev);
 403         } else {
 404                 priv->infra_open = 1;
 405
 406                 if (priv->connect_status == LBS_CONNECTED)
 407                         netif_carrier_on(dev);
 408                 else
 409                         netif_carrier_off(dev);
 410         }
 411
 412         if (!priv->tx_pending_len)
 413                 netif_wake_queue(dev);
 414  out:
 415
 416         spin_unlock_irq(&priv->driver_lock);
 417         return ret;
 418 }
 419
 420 /**
 421  *  @brief This function closes the mshX interface
 422  *
 423  *  @param dev     A pointer to net_device structure
 424  *  @return        0
 425  */
 426 static int lbs_mesh_stop(struct net_device *dev)
 427 {
 428         struct lbs_private *priv = (struct lbs_private *) (dev->priv);
 429
 430         spin_lock_irq(&priv->driver_lock);
 431
 432         priv->mesh_open = 0;
 433         priv->mesh_connect_status = LBS_DISCONNECTED;
 434
 435         netif_stop_queue(dev);
 436         netif_carrier_off(dev);
 437
 438         spin_unlock_irq(&priv->driver_lock);
 439         return 0;
 440 }
 441
 442 /**
 443  *  @brief This function closes the ethX interface
 444  *
 445  *  @param dev     A pointer to net_device structure
 446  *  @return        0
 447  */
 448 static int lbs_eth_stop(struct net_device *dev)
 449 {
 450         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 451
 452         spin_lock_irq(&priv->driver_lock);
 453
 454         priv->infra_open = 0;
 455
 456         netif_stop_queue(dev);
 457
 458         spin_unlock_irq(&priv->driver_lock);
 459         return 0;
 460 }
 461
 462 static void lbs_tx_timeout(struct net_device *dev)
 463 {
 464         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 465
 466         lbs_deb_enter(LBS_DEB_TX);
 467
 468         lbs_pr_err("tx watch dog timeout\n");
 469
 470         dev->trans_start = jiffies;
 471
 472         if (priv->currenttxskb) {
 473                 priv->eventcause = 0x01000000;
 474                 lbs_send_tx_feedback(priv);
 475         }
 476         /* XX: Shouldn't we also call into the hw-specific driver
 477            to kick it somehow? */
 478         lbs_host_to_card_done(priv);
 479
 480         lbs_deb_leave(LBS_DEB_TX);
 481 }
 482
 483 void lbs_host_to_card_done(struct lbs_private *priv)
 484 {
 485         unsigned long flags;
 486
 487         spin_lock_irqsave(&priv->driver_lock, flags);
 488
 489         priv->dnld_sent = DNLD_RES_RECEIVED;
 490
 491         /* Wake main thread if commands are pending */
 492         if (!priv->cur_cmd)
 493                 wake_up_interruptible(&priv->waitq);
 494
 495         /* Don't wake netif queues if we're in monitor mode and
 496            a TX packet is already pending, or if there are commands
 497            queued to be sent. */
 498         if (!priv->currenttxskb && list_empty(&priv->cmdpendingq)) {
 499                 if (priv->dev && priv->connect_status == LBS_CONNECTED)
 500                         netif_wake_queue(priv->dev);
 501
 502                 if (priv->mesh_dev && priv->mesh_connect_status == LBS_CONNECTED)
 503                         netif_wake_queue(priv->mesh_dev);
 504         }
 505         spin_unlock_irqrestore(&priv->driver_lock, flags);
 506 }
 507 EXPORT_SYMBOL_GPL(lbs_host_to_card_done);
 508
 509 /**
 510  *  @brief This function returns the network statistics
 511  *
 512  *  @param dev     A pointer to struct lbs_private structure
 513  *  @return        A pointer to net_device_stats structure
 514  */
 515 static struct net_device_stats *lbs_get_stats(struct net_device *dev)
 516 {
 517         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 518
 519         return &priv->stats;
 520 }
 521
 522 static int lbs_set_mac_address(struct net_device *dev, void *addr)
 523 {
 524         int ret = 0;
 525         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 526         struct sockaddr *phwaddr = addr;
 527
 528         lbs_deb_enter(LBS_DEB_NET);
 529
 530         /* In case it was called from the mesh device */
 531         dev = priv->dev ;
 532
 533         memset(priv->current_addr, 0, ETH_ALEN);
 534
 535         /* dev->dev_addr is 8 bytes */
 536         lbs_deb_hex(LBS_DEB_NET, "dev->dev_addr", dev->dev_addr, ETH_ALEN);
 537
 538         lbs_deb_hex(LBS_DEB_NET, "addr", phwaddr->sa_data, ETH_ALEN);
 539         memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN);
 540
 541         ret = lbs_prepare_and_send_command(priv, CMD_802_11_MAC_ADDRESS,
 542                                     CMD_ACT_SET,
 543                                     CMD_OPTION_WAITFORRSP, 0, NULL);
 544
 545         if (ret) {
 546                 lbs_deb_net("set MAC address failed\n");
 547                 ret = -1;
 548                 goto done;
 549         }
 550
 551         lbs_deb_hex(LBS_DEB_NET, "priv->macaddr", priv->current_addr, ETH_ALEN);
 552         memcpy(dev->dev_addr, priv->current_addr, ETH_ALEN);
 553         if (priv->mesh_dev)
 554                 memcpy(priv->mesh_dev->dev_addr, priv->current_addr, ETH_ALEN);
 555
 556 done:
 557         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 558         return ret;
 559 }
 560
 561 static int lbs_copy_multicast_address(struct lbs_private *priv,
 562                                      struct net_device *dev)
 563 {
 564         int i = 0;
 565         struct dev_mc_list *mcptr = dev->mc_list;
 566
 567         for (i = 0; i < dev->mc_count; i++) {
 568                 memcpy(&priv->multicastlist[i], mcptr->dmi_addr, ETH_ALEN);
 569                 mcptr = mcptr->next;
 570         }
 571
 572         return i;
 573
 574 }
 575
 576 static void lbs_set_multicast_list(struct net_device *dev)
 577 {
 578         struct lbs_private *priv = dev->priv;
 579         int oldpacketfilter;
 580         DECLARE_MAC_BUF(mac);
 581
 582         lbs_deb_enter(LBS_DEB_NET);
 583
 584         oldpacketfilter = priv->currentpacketfilter;
 585
 586         if (dev->flags & IFF_PROMISC) {
 587                 lbs_deb_net("enable promiscuous mode\n");
 588                 priv->currentpacketfilter |=
 589                     CMD_ACT_MAC_PROMISCUOUS_ENABLE;
 590                 priv->currentpacketfilter &=
 591                     ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
 592                       CMD_ACT_MAC_MULTICAST_ENABLE);
 593         } else {
 594                 /* Multicast */
 595                 priv->currentpacketfilter &=
 596                     ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
 597
 598                 if (dev->flags & IFF_ALLMULTI || dev->mc_count >
 599                     MRVDRV_MAX_MULTICAST_LIST_SIZE) {
 600                         lbs_deb_net( "enabling all multicast\n");
 601                         priv->currentpacketfilter |=
 602                             CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
 603                         priv->currentpacketfilter &=
 604                             ~CMD_ACT_MAC_MULTICAST_ENABLE;
 605                 } else {
 606                         priv->currentpacketfilter &=
 607                             ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
 608
 609                         if (!dev->mc_count) {
 610                                 lbs_deb_net("no multicast addresses, "
 611                                        "disabling multicast\n");
 612                                 priv->currentpacketfilter &=
 613                                     ~CMD_ACT_MAC_MULTICAST_ENABLE;
 614                         } else {
 615                                 int i;
 616
 617                                 priv->currentpacketfilter |=
 618                                     CMD_ACT_MAC_MULTICAST_ENABLE;
 619
 620                                 priv->nr_of_multicastmacaddr =
 621                                     lbs_copy_multicast_address(priv, dev);
 622
 623                                 lbs_deb_net("multicast addresses: %d\n",
 624                                        dev->mc_count);
 625
 626                                 for (i = 0; i < dev->mc_count; i++) {
 627                                         lbs_deb_net("Multicast address %d:%s\n",
 628                                                i, print_mac(mac,
 629                                                priv->multicastlist[i]));
 630                                 }
 631                                 /* send multicast addresses to firmware */
 632                                 lbs_prepare_and_send_command(priv,
 633                                                       CMD_MAC_MULTICAST_ADR,
 634                                                       CMD_ACT_SET, 0, 0,
 635                                                       NULL);
 636                         }
 637                 }
 638         }
 639
 640         if (priv->currentpacketfilter != oldpacketfilter) {
 641                 lbs_set_mac_packet_filter(priv);
 642         }
 643
 644         lbs_deb_leave(LBS_DEB_NET);
 645 }
 646
 647 /**
 648  *  @brief This function handles the major jobs in the LBS driver.
 649  *  It handles all events generated by firmware, RX data received
 650  *  from firmware and TX data sent from kernel.
 651  *
 652  *  @param data    A pointer to lbs_thread structure
 653  *  @return        0
 654  */
 655 static int lbs_thread(void *data)
 656 {
 657         struct net_device *dev = data;
 658         struct lbs_private *priv = dev->priv;
 659         wait_queue_t wait;
 660         u8 ireg = 0;
 661
 662         lbs_deb_enter(LBS_DEB_THREAD);
 663
 664         init_waitqueue_entry(&wait, current);
 665
 666         set_freezable();
 667
 668         for (;;) {
 669                 int shouldsleep;
 670
 671                 lbs_deb_thread( "main-thread 111: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
 672                                 priv->intcounter, priv->currenttxskb, priv->dnld_sent);
 673
 674                 add_wait_queue(&priv->waitq, &wait);
 675                 set_current_state(TASK_INTERRUPTIBLE);
 676                 spin_lock_irq(&priv->driver_lock);
 677
 678                 if (priv->surpriseremoved)
 679                         shouldsleep = 0;        /* Bye */
 680                 else if (priv->psstate == PS_STATE_SLEEP)
 681                         shouldsleep = 1;        /* Sleep mode. Nothing we can do till it wakes */
 682                 else if (priv->intcounter)
 683                         shouldsleep = 0;        /* Interrupt pending. Deal with it now */
 684                 else if (!priv->fw_ready)
 685                         shouldsleep = 1;        /* Firmware not ready. We're waiting for it */
 686                 else if (priv->dnld_sent)
 687                         shouldsleep = 1;        /* Something is en route to the device already */
 688                 else if (priv->tx_pending_len > 0)
 689                         shouldsleep = 0;        /* We've a packet to send */
 690                 else if (priv->cur_cmd)
 691                         shouldsleep = 1;        /* Can't send a command; one already running */
 692                 else if (!list_empty(&priv->cmdpendingq))
 693                         shouldsleep = 0;        /* We have a command to send */
 694                 else
 695                         shouldsleep = 1;        /* No command */
 696
 697                 if (shouldsleep) {
 698                         lbs_deb_thread("main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
 699                                        priv->connect_status, priv->intcounter,
 700                                        priv->psmode, priv->psstate);
 701                         spin_unlock_irq(&priv->driver_lock);
 702                         schedule();
 703                 } else
 704                         spin_unlock_irq(&priv->driver_lock);
 705
 706                 lbs_deb_thread("main-thread 222 (waking up): intcounter=%d currenttxskb=%p dnld_sent=%d\n",
 707                                priv->intcounter, priv->currenttxskb, priv->dnld_sent);
 708
 709                 set_current_state(TASK_RUNNING);
 710                 remove_wait_queue(&priv->waitq, &wait);
 711                 try_to_freeze();
 712
 713                 lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
 714                                priv->intcounter, priv->currenttxskb, priv->dnld_sent);
 715
 716                 if (kthread_should_stop() || priv->surpriseremoved) {
 717                         lbs_deb_thread("main-thread: break from main thread: surpriseremoved=0x%x\n",
 718                                        priv->surpriseremoved);
 719                         break;
 720                 }
 721
 722
 723                 spin_lock_irq(&priv->driver_lock);
 724
 725                 if (priv->intcounter) {
 726                         u8 int_status;
 727
 728                         priv->intcounter = 0;
 729                         int_status = priv->hw_get_int_status(priv, &ireg);
 730
 731                         if (int_status) {
 732                                 lbs_deb_thread("main-thread: reading HOST_INT_STATUS_REG failed\n");
 733                                 spin_unlock_irq(&priv->driver_lock);
 734                                 continue;
 735                         }
 736                         priv->hisregcpy |= ireg;
 737                 }
 738
 739                 lbs_deb_thread("main-thread 444: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
 740                                priv->intcounter, priv->currenttxskb, priv->dnld_sent);
 741
 742                 /* command response? */
 743                 if (priv->hisregcpy & MRVDRV_CMD_UPLD_RDY) {
 744                         lbs_deb_thread("main-thread: cmd response ready\n");
 745
 746                         priv->hisregcpy &= ~MRVDRV_CMD_UPLD_RDY;
 747                         spin_unlock_irq(&priv->driver_lock);
 748                         lbs_process_rx_command(priv);
 749                         spin_lock_irq(&priv->driver_lock);
 750                 }
 751
 752                 /* Any Card Event */
 753                 if (priv->hisregcpy & MRVDRV_CARDEVENT) {
 754                         lbs_deb_thread("main-thread: Card Event Activity\n");
 755
 756                         priv->hisregcpy &= ~MRVDRV_CARDEVENT;
 757
 758                         if (priv->hw_read_event_cause(priv)) {
 759                                 lbs_pr_alert("main-thread: hw_read_event_cause failed\n");
 760                                 spin_unlock_irq(&priv->driver_lock);
 761                                 continue;
 762                         }
 763                         spin_unlock_irq(&priv->driver_lock);
 764                         lbs_process_event(priv);
 765                 } else
 766                         spin_unlock_irq(&priv->driver_lock);
 767
 768                 if (!priv->fw_ready)
 769                         continue;
 770
 771                 /* Check if we need to confirm Sleep Request received previously */
 772                 if (priv->psstate == PS_STATE_PRE_SLEEP &&
 773                     !priv->dnld_sent && !priv->cur_cmd) {
 774                         if (priv->connect_status == LBS_CONNECTED) {
 775                                 lbs_deb_thread("main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p dnld_sent=%d cur_cmd=%p, confirm now\n",
 776                                                priv->intcounter, priv->currenttxskb, priv->dnld_sent, priv->cur_cmd);
 777
 778                                 lbs_ps_confirm_sleep(priv, (u16) priv->psmode);
 779                         } else {
 780                                 /* workaround for firmware sending
 781                                  * deauth/linkloss event immediately
 782                                  * after sleep request; remove this
 783                                  * after firmware fixes it
 784                                  */
 785                                 priv->psstate = PS_STATE_AWAKE;
 786                                 lbs_pr_alert("main-thread: ignore PS_SleepConfirm in non-connected state\n");
 787                         }
 788                 }
 789
 790                 /* The PS state is changed during processing of Sleep Request
 791                  * event above
 792                  */
 793                 if ((priv->psstate == PS_STATE_SLEEP) ||
 794                     (priv->psstate == PS_STATE_PRE_SLEEP))
 795                         continue;
 796
 797                 /* Execute the next command */
 798                 if (!priv->dnld_sent && !priv->cur_cmd)
 799                         lbs_execute_next_command(priv);
 800
 801                 /* Wake-up command waiters which can't sleep in
 802                  * lbs_prepare_and_send_command
 803                  */
 804                 if (!list_empty(&priv->cmdpendingq))
 805                         wake_up_all(&priv->cmd_pending);
 806
 807                 spin_lock_irq(&priv->driver_lock);
 808                 if (!priv->dnld_sent && priv->tx_pending_len > 0) {
 809                         int ret = priv->hw_host_to_card(priv, MVMS_DAT,
 810                                                         priv->tx_pending_buf,
 811                                                         priv->tx_pending_len);
 812                         if (ret) {
 813                                 lbs_deb_tx("host_to_card failed %d\n", ret);
 814                                 priv->dnld_sent = DNLD_RES_RECEIVED;
 815                         }
 816                         priv->tx_pending_len = 0;
 817                         if (!priv->currenttxskb) {
 818                                 /* We can wake the queues immediately if we aren't
 819                                    waiting for TX feedback */
 820                                 if (priv->connect_status == LBS_CONNECTED)
 821                                         netif_wake_queue(priv->dev);
 822                                 if (priv->mesh_dev &&
 823                                     priv->mesh_connect_status == LBS_CONNECTED)
 824                                         netif_wake_queue(priv->mesh_dev);
 825                         }
 826                 }
 827                 spin_unlock_irq(&priv->driver_lock);
 828         }
 829
 830         del_timer(&priv->command_timer);
 831         wake_up_all(&priv->cmd_pending);
 832
 833         lbs_deb_leave(LBS_DEB_THREAD);
 834         return 0;
 835 }
 836
 837 /**
 838  *  @brief This function downloads firmware image, gets
 839  *  HW spec from firmware and set basic parameters to
 840  *  firmware.
 841  *
 842  *  @param priv    A pointer to struct lbs_private structure
 843  *  @return        0 or -1
 844  */
 845 static int lbs_setup_firmware(struct lbs_private *priv)
 846 {
 847         int ret = -1;
 848
 849         lbs_deb_enter(LBS_DEB_FW);
 850
 851         /*
 852          * Read MAC address from HW
 853          */
 854         memset(priv->current_addr, 0xff, ETH_ALEN);
 855         ret = lbs_update_hw_spec(priv);
 856         if (ret) {
 857                 ret = -1;
 858                 goto done;
 859         }
 860
 861         lbs_set_mac_packet_filter(priv);
 862
 863         ret = lbs_get_data_rate(priv);
 864         if (ret < 0) {
 865                 ret = -1;
 866                 goto done;
 867         }
 868
 869         ret = 0;
 870 done:
 871         lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
 872         return ret;
 873 }
 874
 875 /**
 876  *  This function handles the timeout of command sending.
 877  *  It will re-send the same command again.
 878  */
 879 static void command_timer_fn(unsigned long data)
 880 {
 881         struct lbs_private *priv = (struct lbs_private *)data;
 882         struct cmd_ctrl_node *node;
 883         unsigned long flags;
 884
 885         node = priv->cur_cmd;
 886         if (node == NULL) {
 887                 lbs_deb_fw("ptempnode empty\n");
 888                 return;
 889         }
 890
 891         if (!node->cmdbuf) {
 892                 lbs_deb_fw("cmd is NULL\n");
 893                 return;
 894         }
 895
 896         lbs_deb_fw("command_timer_fn fired, cmd %x\n", node->cmdbuf->command);
 897
 898         if (!priv->fw_ready)
 899                 return;
 900
 901         spin_lock_irqsave(&priv->driver_lock, flags);
 902         priv->cur_cmd = NULL;
 903         spin_unlock_irqrestore(&priv->driver_lock, flags);
 904
 905         lbs_deb_fw("re-sending same command because of timeout\n");
 906         lbs_queue_cmd(priv, node, 0);
 907
 908         wake_up_interruptible(&priv->waitq);
 909
 910         return;
 911 }
 912
 913 static int lbs_init_adapter(struct lbs_private *priv)
 914 {
 915         size_t bufsize;
 916         int i, ret = 0;
 917
 918         /* Allocate buffer to store the BSSID list */
 919         bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
 920         priv->networks = kzalloc(bufsize, GFP_KERNEL);
 921         if (!priv->networks) {
 922                 lbs_pr_err("Out of memory allocating beacons\n");
 923                 ret = -1;
 924                 goto out;
 925         }
 926
 927         /* Initialize scan result lists */
 928         INIT_LIST_HEAD(&priv->network_free_list);
 929         INIT_LIST_HEAD(&priv->network_list);
 930         for (i = 0; i < MAX_NETWORK_COUNT; i++) {
 931                 list_add_tail(&priv->networks[i].list,
 932                               &priv->network_free_list);
 933         }
 934
 935         priv->lbs_ps_confirm_sleep.seqnum = cpu_to_le16(++priv->seqnum);
 936         priv->lbs_ps_confirm_sleep.command =
 937             cpu_to_le16(CMD_802_11_PS_MODE);
 938         priv->lbs_ps_confirm_sleep.size =
 939             cpu_to_le16(sizeof(struct PS_CMD_ConfirmSleep));
 940         priv->lbs_ps_confirm_sleep.action =
 941             cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
 942
 943         memset(priv->current_addr, 0xff, ETH_ALEN);
 944
 945         priv->connect_status = LBS_DISCONNECTED;
 946         priv->mesh_connect_status = LBS_DISCONNECTED;
 947         priv->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
 948         priv->mode = IW_MODE_INFRA;
 949         priv->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;
 950         priv->currentpacketfilter = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
 951         priv->radioon = RADIO_ON;
 952         priv->auto_rate = 1;
 953         priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
 954         priv->psmode = LBS802_11POWERMODECAM;
 955         priv->psstate = PS_STATE_FULL_POWER;
 956
 957         mutex_init(&priv->lock);
 958
 959         setup_timer(&priv->command_timer, command_timer_fn,
 960                     (unsigned long)priv);
 961
 962         INIT_LIST_HEAD(&priv->cmdfreeq);
 963         INIT_LIST_HEAD(&priv->cmdpendingq);
 964
 965         spin_lock_init(&priv->driver_lock);
 966         init_waitqueue_head(&priv->cmd_pending);
 967
 968         /* Allocate the command buffers */
 969         if (lbs_allocate_cmd_buffer(priv)) {
 970                 lbs_pr_err("Out of memory allocating command buffers\n");
 971                 ret = -1;
 972         }
 973
 974 out:
 975         return ret;
 976 }
 977
 978 static void lbs_free_adapter(struct lbs_private *priv)
 979 {
 980         lbs_deb_fw("free command buffer\n");
 981         lbs_free_cmd_buffer(priv);
 982
 983         lbs_deb_fw("free command_timer\n");
 984         del_timer(&priv->command_timer);
 985
 986         lbs_deb_fw("free scan results table\n");
 987         kfree(priv->networks);
 988         priv->networks = NULL;
 989 }
 990
 991 /**
 992  * @brief This function adds the card. it will probe the
 993  * card, allocate the lbs_priv and initialize the device.
 994  *
 995  *  @param card    A pointer to card
 996  *  @return        A pointer to struct lbs_private structure
 997  */
 998 struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
 999 {
1000         struct net_device *dev = NULL;
1001         struct lbs_private *priv = NULL;
1002
1003         lbs_deb_enter(LBS_DEB_NET);
1004
1005         /* Allocate an Ethernet device and register it */
1006         dev = alloc_etherdev(sizeof(struct lbs_private));
1007         if (!dev) {
1008                 lbs_pr_err("init ethX device failed\n");
1009                 goto done;
1010         }
1011         priv = dev->priv;
1012
1013         if (lbs_init_adapter(priv)) {
1014                 lbs_pr_err("failed to initialize adapter structure.\n");
1015                 goto err_init_adapter;
1016         }
1017
1018         priv->dev = dev;
1019         priv->card = card;
1020         priv->mesh_open = 0;
1021         priv->infra_open = 0;
1022
1023         /* Setup the OS Interface to our functions */
1024         dev->open = lbs_dev_open;
1025         dev->hard_start_xmit = lbs_hard_start_xmit;
1026         dev->stop = lbs_eth_stop;
1027         dev->set_mac_address = lbs_set_mac_address;
1028         dev->tx_timeout = lbs_tx_timeout;
1029         dev->get_stats = lbs_get_stats;
1030         dev->watchdog_timeo = 5 * HZ;
1031         dev->ethtool_ops = &lbs_ethtool_ops;
1032 #ifdef  WIRELESS_EXT
1033         dev->wireless_handlers = (struct iw_handler_def *)&lbs_handler_def;
1034 #endif
1035         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1036         dev->set_multicast_list = lbs_set_multicast_list;
1037
1038         SET_NETDEV_DEV(dev, dmdev);
1039
1040         priv->rtap_net_dev = NULL;
1041
1042         lbs_deb_thread("Starting main thread...\n");
1043         init_waitqueue_head(&priv->waitq);
1044         priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
1045         if (IS_ERR(priv->main_thread)) {
1046                 lbs_deb_thread("Error creating main thread.\n");
1047                 goto err_init_adapter;
1048         }
1049
1050         priv->work_thread = create_singlethread_workqueue("lbs_worker");
1051         INIT_DELAYED_WORK(&priv->assoc_work, lbs_association_worker);
1052         INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
1053         INIT_WORK(&priv->sync_channel, lbs_sync_channel);
1054
1055         sprintf(priv->mesh_ssid, "mesh");
1056         priv->mesh_ssid_len = 4;
1057
1058         goto done;
1059
1060 err_init_adapter:
1061         lbs_free_adapter(priv);
1062         free_netdev(dev);
1063         priv = NULL;
1064
1065 done:
1066         lbs_deb_leave_args(LBS_DEB_NET, "priv %p", priv);
1067         return priv;
1068 }
1069 EXPORT_SYMBOL_GPL(lbs_add_card);
1070
1071
1072 int lbs_remove_card(struct lbs_private *priv)
1073 {
1074         struct net_device *dev = priv->dev;
1075         union iwreq_data wrqu;
1076
1077         lbs_deb_enter(LBS_DEB_MAIN);
1078
1079         lbs_remove_mesh(priv);
1080         lbs_remove_rtap(priv);
1081
1082         dev = priv->dev;
1083
1084         cancel_delayed_work(&priv->scan_work);
1085         cancel_delayed_work(&priv->assoc_work);
1086         destroy_workqueue(priv->work_thread);
1087
1088         if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
1089                 priv->psmode = LBS802_11POWERMODECAM;
1090                 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1091         }
1092
1093         memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1094         wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1095         wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1096
1097         /* Stop the thread servicing the interrupts */
1098         priv->surpriseremoved = 1;
1099         kthread_stop(priv->main_thread);
1100
1101         lbs_free_adapter(priv);
1102
1103         priv->dev = NULL;
1104         free_netdev(dev);
1105
1106         lbs_deb_leave(LBS_DEB_MAIN);
1107         return 0;
1108 }
1109 EXPORT_SYMBOL_GPL(lbs_remove_card);
1110
1111
1112 int lbs_start_card(struct lbs_private *priv)
1113 {
1114         struct net_device *dev = priv->dev;
1115         int ret = -1;
1116
1117         lbs_deb_enter(LBS_DEB_MAIN);
1118
1119         /* poke the firmware */
1120         ret = lbs_setup_firmware(priv);
1121         if (ret)
1122                 goto done;
1123
1124         /* init 802.11d */
1125         lbs_init_11d(priv);
1126
1127         if (register_netdev(dev)) {
1128                 lbs_pr_err("cannot register ethX device\n");
1129                 goto done;
1130         }
1131         if (device_create_file(&dev->dev, &dev_attr_lbs_rtap))
1132                 lbs_pr_err("cannot register lbs_rtap attribute\n");
1133         if (device_create_file(&dev->dev, &dev_attr_lbs_mesh))
1134                 lbs_pr_err("cannot register lbs_mesh attribute\n");
1135
1136         lbs_debugfs_init_one(priv, dev);
1137
1138         lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
1139
1140         ret = 0;
1141
1142 done:
1143         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1144         return ret;
1145 }
1146 EXPORT_SYMBOL_GPL(lbs_start_card);
1147
1148
1149 int lbs_stop_card(struct lbs_private *priv)
1150 {
1151         struct net_device *dev = priv->dev;
1152         int ret = -1;
1153         struct cmd_ctrl_node *cmdnode;
1154         unsigned long flags;
1155
1156         lbs_deb_enter(LBS_DEB_MAIN);
1157
1158         netif_stop_queue(priv->dev);
1159         netif_carrier_off(priv->dev);
1160
1161         lbs_debugfs_remove_one(priv);
1162         device_remove_file(&dev->dev, &dev_attr_lbs_rtap);
1163         device_remove_file(&dev->dev, &dev_attr_lbs_mesh);
1164
1165         /* Flush pending command nodes */
1166         spin_lock_irqsave(&priv->driver_lock, flags);
1167         list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
1168                 cmdnode->cmdwaitqwoken = 1;
1169                 wake_up_interruptible(&cmdnode->cmdwait_q);
1170         }
1171         spin_unlock_irqrestore(&priv->driver_lock, flags);
1172
1173         unregister_netdev(dev);
1174
1175         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1176         return ret;
1177 }
1178 EXPORT_SYMBOL_GPL(lbs_stop_card);
1179
1180
1181 /**
1182  * @brief This function adds mshX interface
1183  *
1184  *  @param priv    A pointer to the struct lbs_private structure
1185  *  @return        0 if successful, -X otherwise
1186  */
1187 static int lbs_add_mesh(struct lbs_private *priv)
1188 {
1189         struct net_device *mesh_dev = NULL;
1190         int ret = 0;
1191
1192         lbs_deb_enter(LBS_DEB_MESH);
1193
1194         /* Allocate a virtual mesh device */
1195         if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
1196                 lbs_deb_mesh("init mshX device failed\n");
1197                 ret = -ENOMEM;
1198                 goto done;
1199         }
1200         mesh_dev->priv = priv;
1201         priv->mesh_dev = mesh_dev;
1202
1203         mesh_dev->open = lbs_dev_open;
1204         mesh_dev->hard_start_xmit = lbs_hard_start_xmit;
1205         mesh_dev->stop = lbs_mesh_stop;
1206         mesh_dev->get_stats = lbs_get_stats;
1207         mesh_dev->set_mac_address = lbs_set_mac_address;
1208         mesh_dev->ethtool_ops = &lbs_ethtool_ops;
1209         memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
1210                         sizeof(priv->dev->dev_addr));
1211
1212         SET_NETDEV_DEV(priv->mesh_dev, priv->dev->dev.parent);
1213
1214 #ifdef  WIRELESS_EXT
1215         mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
1216 #endif
1217         /* Register virtual mesh interface */
1218         ret = register_netdev(mesh_dev);
1219         if (ret) {
1220                 lbs_pr_err("cannot register mshX virtual interface\n");
1221                 goto err_free;
1222         }
1223
1224         ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1225         if (ret)
1226                 goto err_unregister;
1227
1228         /* Everything successful */
1229         ret = 0;
1230         goto done;
1231
1232 err_unregister:
1233         unregister_netdev(mesh_dev);
1234
1235 err_free:
1236         free_netdev(mesh_dev);
1237
1238 done:
1239         lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1240         return ret;
1241 }
1242 EXPORT_SYMBOL_GPL(lbs_add_mesh);
1243
1244
1245 static void lbs_remove_mesh(struct lbs_private *priv)
1246 {
1247         struct net_device *mesh_dev;
1248
1249         lbs_deb_enter(LBS_DEB_MAIN);
1250
1251         if (!priv)
1252                 goto out;
1253
1254         mesh_dev = priv->mesh_dev;
1255         if (!mesh_dev)
1256                 goto out;
1257
1258         netif_stop_queue(mesh_dev);
1259         netif_carrier_off(priv->mesh_dev);
1260
1261         sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1262         unregister_netdev(mesh_dev);
1263
1264         priv->mesh_dev = NULL;
1265         free_netdev(mesh_dev);
1266
1267 out:
1268         lbs_deb_leave(LBS_DEB_MAIN);
1269 }
1270 EXPORT_SYMBOL_GPL(lbs_remove_mesh);
1271
1272 /**
1273  *  @brief This function finds the CFP in
1274  *  region_cfp_table based on region and band parameter.
1275  *
1276  *  @param region  The region code
1277  *  @param band    The band
1278  *  @param cfp_no  A pointer to CFP number
1279  *  @return        A pointer to CFP
1280  */
1281 struct chan_freq_power *lbs_get_region_cfp_table(u8 region, u8 band, int *cfp_no)
1282 {
1283         int i, end;
1284
1285         lbs_deb_enter(LBS_DEB_MAIN);
1286
1287         end = ARRAY_SIZE(region_cfp_table);
1288
1289         for (i = 0; i < end ; i++) {
1290                 lbs_deb_main("region_cfp_table[i].region=%d\n",
1291                         region_cfp_table[i].region);
1292                 if (region_cfp_table[i].region == region) {
1293                         *cfp_no = region_cfp_table[i].cfp_no_BG;
1294                         lbs_deb_leave(LBS_DEB_MAIN);
1295                         return region_cfp_table[i].cfp_BG;
1296                 }
1297         }
1298
1299         lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1300         return NULL;
1301 }
1302
1303 int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band)
1304 {
1305         int ret = 0;
1306         int i = 0;
1307
1308         struct chan_freq_power *cfp;
1309         int cfp_no;
1310
1311         lbs_deb_enter(LBS_DEB_MAIN);
1312
1313         memset(priv->region_channel, 0, sizeof(priv->region_channel));
1314
1315         {
1316                 cfp = lbs_get_region_cfp_table(region, band, &cfp_no);
1317                 if (cfp != NULL) {
1318                         priv->region_channel[i].nrcfp = cfp_no;
1319                         priv->region_channel[i].CFP = cfp;
1320                 } else {
1321                         lbs_deb_main("wrong region code %#x in band B/G\n",
1322                                region);
1323                         ret = -1;
1324                         goto out;
1325                 }
1326                 priv->region_channel[i].valid = 1;
1327                 priv->region_channel[i].region = region;
1328                 priv->region_channel[i].band = band;
1329                 i++;
1330         }
1331 out:
1332         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1333         return ret;
1334 }
1335
1336 /**
1337  *  @brief This function handles the interrupt. it will change PS
1338  *  state if applicable. it will wake up main_thread to handle
1339  *  the interrupt event as well.
1340  *
1341  *  @param dev     A pointer to net_device structure
1342  *  @return        n/a
1343  */
1344 void lbs_interrupt(struct lbs_private *priv)
1345 {
1346         lbs_deb_enter(LBS_DEB_THREAD);
1347
1348         lbs_deb_thread("lbs_interrupt: intcounter=%d\n", priv->intcounter);
1349
1350         if (spin_trylock(&priv->driver_lock)) {
1351                 spin_unlock(&priv->driver_lock);
1352                 printk(KERN_CRIT "%s called without driver_lock held\n", __func__);
1353                 WARN_ON(1);
1354         }
1355
1356         priv->intcounter++;
1357
1358         if (priv->psstate == PS_STATE_SLEEP)
1359                 priv->psstate = PS_STATE_AWAKE;
1360
1361         wake_up_interruptible(&priv->waitq);
1362
1363         lbs_deb_leave(LBS_DEB_THREAD);
1364 }
1365 EXPORT_SYMBOL_GPL(lbs_interrupt);
1366
1367 int lbs_reset_device(struct lbs_private *priv)
1368 {
1369         int ret;
1370
1371         lbs_deb_enter(LBS_DEB_MAIN);
1372         ret = lbs_prepare_and_send_command(priv, CMD_802_11_RESET,
1373                                     CMD_ACT_HALT, 0, 0, NULL);
1374         msleep_interruptible(10);
1375
1376         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1377         return ret;
1378 }
1379 EXPORT_SYMBOL_GPL(lbs_reset_device);
1380
1381 static int __init lbs_init_module(void)
1382 {
1383         lbs_deb_enter(LBS_DEB_MAIN);
1384         lbs_debugfs_init();
1385         lbs_deb_leave(LBS_DEB_MAIN);
1386         return 0;
1387 }
1388
1389 static void __exit lbs_exit_module(void)
1390 {
1391         lbs_deb_enter(LBS_DEB_MAIN);
1392
1393         lbs_debugfs_remove();
1394
1395         lbs_deb_leave(LBS_DEB_MAIN);
1396 }
1397
1398 /*
1399  * rtap interface support fuctions
1400  */
1401
1402 static int lbs_rtap_open(struct net_device *dev)
1403 {
1404         /* Yes, _stop_ the queue. Because we don't support injection */
1405         netif_carrier_off(dev);
1406         netif_stop_queue(dev);
1407         return 0;
1408 }
1409
1410 static int lbs_rtap_stop(struct net_device *dev)
1411 {
1412         return 0;
1413 }
1414
1415 static int lbs_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1416 {
1417         netif_stop_queue(dev);
1418         return NETDEV_TX_BUSY;
1419 }
1420
1421 static struct net_device_stats *lbs_rtap_get_stats(struct net_device *dev)
1422 {
1423         struct lbs_private *priv = dev->priv;
1424         return &priv->stats;
1425 }
1426
1427
1428 static void lbs_remove_rtap(struct lbs_private *priv)
1429 {
1430         if (priv->rtap_net_dev == NULL)
1431                 return;
1432         unregister_netdev(priv->rtap_net_dev);
1433         free_netdev(priv->rtap_net_dev);
1434         priv->rtap_net_dev = NULL;
1435 }
1436
1437 static int lbs_add_rtap(struct lbs_private *priv)
1438 {
1439         int rc = 0;
1440         struct net_device *rtap_dev;
1441
1442         if (priv->rtap_net_dev)
1443                 return -EPERM;
1444
1445         rtap_dev = alloc_netdev(0, "rtap%d", ether_setup);
1446         if (rtap_dev == NULL)
1447                 return -ENOMEM;
1448
1449         memcpy(rtap_dev->dev_addr, priv->current_addr, ETH_ALEN);
1450         rtap_dev->type = ARPHRD_IEEE80211_RADIOTAP;
1451         rtap_dev->open = lbs_rtap_open;
1452         rtap_dev->stop = lbs_rtap_stop;
1453         rtap_dev->get_stats = lbs_rtap_get_stats;
1454         rtap_dev->hard_start_xmit = lbs_rtap_hard_start_xmit;
1455         rtap_dev->set_multicast_list = lbs_set_multicast_list;
1456         rtap_dev->priv = priv;
1457
1458         rc = register_netdev(rtap_dev);
1459         if (rc) {
1460                 free_netdev(rtap_dev);
1461                 return rc;
1462         }
1463         priv->rtap_net_dev = rtap_dev;
1464
1465         return 0;
1466 }
1467
1468
1469 module_init(lbs_init_module);
1470 module_exit(lbs_exit_module);
1471
1472 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1473 MODULE_AUTHOR("Marvell International Ltd.");
1474 MODULE_LICENSE("GPL");