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
  26 #define DRIVER_RELEASE_VERSION "323.p0"
  27 const char lbs_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
  28 #ifdef  DEBUG
  29     "-dbg"
  30 #endif
  31     "";
  32
  33
  34 /* Module parameters */
  35 unsigned int lbs_debug;
  36 EXPORT_SYMBOL_GPL(lbs_debug);
  37 module_param_named(libertas_debug, lbs_debug, int, 0644);
  38
  39
  40 #define LBS_TX_PWR_DEFAULT              20      /*100mW */
  41 #define LBS_TX_PWR_US_DEFAULT           20      /*100mW */
  42 #define LBS_TX_PWR_JP_DEFAULT           16      /*50mW */
  43 #define LBS_TX_PWR_FR_DEFAULT           20      /*100mW */
  44 #define LBS_TX_PWR_EMEA_DEFAULT 20      /*100mW */
  45
  46 /* Format { channel, frequency (MHz), maxtxpower } */
  47 /* band: 'B/G', region: USA FCC/Canada IC */
  48 static struct chan_freq_power channel_freq_power_US_BG[] = {
  49         {1, 2412, LBS_TX_PWR_US_DEFAULT},
  50         {2, 2417, LBS_TX_PWR_US_DEFAULT},
  51         {3, 2422, LBS_TX_PWR_US_DEFAULT},
  52         {4, 2427, LBS_TX_PWR_US_DEFAULT},
  53         {5, 2432, LBS_TX_PWR_US_DEFAULT},
  54         {6, 2437, LBS_TX_PWR_US_DEFAULT},
  55         {7, 2442, LBS_TX_PWR_US_DEFAULT},
  56         {8, 2447, LBS_TX_PWR_US_DEFAULT},
  57         {9, 2452, LBS_TX_PWR_US_DEFAULT},
  58         {10, 2457, LBS_TX_PWR_US_DEFAULT},
  59         {11, 2462, LBS_TX_PWR_US_DEFAULT}
  60 };
  61
  62 /* band: 'B/G', region: Europe ETSI */
  63 static struct chan_freq_power channel_freq_power_EU_BG[] = {
  64         {1, 2412, LBS_TX_PWR_EMEA_DEFAULT},
  65         {2, 2417, LBS_TX_PWR_EMEA_DEFAULT},
  66         {3, 2422, LBS_TX_PWR_EMEA_DEFAULT},
  67         {4, 2427, LBS_TX_PWR_EMEA_DEFAULT},
  68         {5, 2432, LBS_TX_PWR_EMEA_DEFAULT},
  69         {6, 2437, LBS_TX_PWR_EMEA_DEFAULT},
  70         {7, 2442, LBS_TX_PWR_EMEA_DEFAULT},
  71         {8, 2447, LBS_TX_PWR_EMEA_DEFAULT},
  72         {9, 2452, LBS_TX_PWR_EMEA_DEFAULT},
  73         {10, 2457, LBS_TX_PWR_EMEA_DEFAULT},
  74         {11, 2462, LBS_TX_PWR_EMEA_DEFAULT},
  75         {12, 2467, LBS_TX_PWR_EMEA_DEFAULT},
  76         {13, 2472, LBS_TX_PWR_EMEA_DEFAULT}
  77 };
  78
  79 /* band: 'B/G', region: Spain */
  80 static struct chan_freq_power channel_freq_power_SPN_BG[] = {
  81         {10, 2457, LBS_TX_PWR_DEFAULT},
  82         {11, 2462, LBS_TX_PWR_DEFAULT}
  83 };
  84
  85 /* band: 'B/G', region: France */
  86 static struct chan_freq_power channel_freq_power_FR_BG[] = {
  87         {10, 2457, LBS_TX_PWR_FR_DEFAULT},
  88         {11, 2462, LBS_TX_PWR_FR_DEFAULT},
  89         {12, 2467, LBS_TX_PWR_FR_DEFAULT},
  90         {13, 2472, LBS_TX_PWR_FR_DEFAULT}
  91 };
  92
  93 /* band: 'B/G', region: Japan */
  94 static struct chan_freq_power channel_freq_power_JPN_BG[] = {
  95         {1, 2412, LBS_TX_PWR_JP_DEFAULT},
  96         {2, 2417, LBS_TX_PWR_JP_DEFAULT},
  97         {3, 2422, LBS_TX_PWR_JP_DEFAULT},
  98         {4, 2427, LBS_TX_PWR_JP_DEFAULT},
  99         {5, 2432, LBS_TX_PWR_JP_DEFAULT},
 100         {6, 2437, LBS_TX_PWR_JP_DEFAULT},
 101         {7, 2442, LBS_TX_PWR_JP_DEFAULT},
 102         {8, 2447, LBS_TX_PWR_JP_DEFAULT},
 103         {9, 2452, LBS_TX_PWR_JP_DEFAULT},
 104         {10, 2457, LBS_TX_PWR_JP_DEFAULT},
 105         {11, 2462, LBS_TX_PWR_JP_DEFAULT},
 106         {12, 2467, LBS_TX_PWR_JP_DEFAULT},
 107         {13, 2472, LBS_TX_PWR_JP_DEFAULT},
 108         {14, 2484, LBS_TX_PWR_JP_DEFAULT}
 109 };
 110
 111 /**
 112  * the structure for channel, frequency and power
 113  */
 114 struct region_cfp_table {
 115         u8 region;
 116         struct chan_freq_power *cfp_BG;
 117         int cfp_no_BG;
 118 };
 119
 120 /**
 121  * the structure for the mapping between region and CFP
 122  */
 123 static struct region_cfp_table region_cfp_table[] = {
 124         {0x10,                  /*US FCC */
 125          channel_freq_power_US_BG,
 126          ARRAY_SIZE(channel_freq_power_US_BG),
 127          }
 128         ,
 129         {0x20,                  /*CANADA IC */
 130          channel_freq_power_US_BG,
 131          ARRAY_SIZE(channel_freq_power_US_BG),
 132          }
 133         ,
 134         {0x30, /*EU*/ channel_freq_power_EU_BG,
 135          ARRAY_SIZE(channel_freq_power_EU_BG),
 136          }
 137         ,
 138         {0x31, /*SPAIN*/ channel_freq_power_SPN_BG,
 139          ARRAY_SIZE(channel_freq_power_SPN_BG),
 140          }
 141         ,
 142         {0x32, /*FRANCE*/ channel_freq_power_FR_BG,
 143          ARRAY_SIZE(channel_freq_power_FR_BG),
 144          }
 145         ,
 146         {0x40, /*JAPAN*/ channel_freq_power_JPN_BG,
 147          ARRAY_SIZE(channel_freq_power_JPN_BG),
 148          }
 149         ,
 150 /*Add new region here */
 151 };
 152
 153 /**
 154  * the table to keep region code
 155  */
 156 u16 lbs_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
 157     { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
 158
 159 /**
 160  * 802.11b/g supported bitrates (in 500Kb/s units)
 161  */
 162 u8 lbs_bg_rates[MAX_RATES] =
 163     { 0x02, 0x04, 0x0b, 0x16, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
 164 0x00, 0x00 };
 165
 166 /**
 167  * FW rate table.  FW refers to rates by their index in this table, not by the
 168  * rate value itself.  Values of 0x00 are
 169  * reserved positions.
 170  */
 171 static u8 fw_data_rates[MAX_RATES] =
 172     { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,
 173       0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00
 174 };
 175
 176 /**
 177  *  @brief use index to get the data rate
 178  *
 179  *  @param idx                The index of data rate
 180  *  @return                     data rate or 0
 181  */
 182 u32 lbs_fw_index_to_data_rate(u8 idx)
 183 {
 184         if (idx >= sizeof(fw_data_rates))
 185                 idx = 0;
 186         return fw_data_rates[idx];
 187 }
 188
 189 /**
 190  *  @brief use rate to get the index
 191  *
 192  *  @param rate                 data rate
 193  *  @return                     index or 0
 194  */
 195 u8 lbs_data_rate_to_fw_index(u32 rate)
 196 {
 197         u8 i;
 198
 199         if (!rate)
 200                 return 0;
 201
 202         for (i = 0; i < sizeof(fw_data_rates); i++) {
 203                 if (rate == fw_data_rates[i])
 204                         return i;
 205         }
 206         return 0;
 207 }
 208
 209 /**
 210  * Attributes exported through sysfs
 211  */
 212
 213 /**
 214  * @brief Get function for sysfs attribute anycast_mask
 215  */
 216 static ssize_t lbs_anycast_get(struct device *dev,
 217                 struct device_attribute *attr, char * buf)
 218 {
 219         struct cmd_ds_mesh_access mesh_access;
 220
 221         memset(&mesh_access, 0, sizeof(mesh_access));
 222         lbs_prepare_and_send_command(to_net_dev(dev)->priv,
 223                         CMD_MESH_ACCESS,
 224                         CMD_ACT_MESH_GET_ANYCAST,
 225                         CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
 226
 227         return snprintf(buf, 12, "0x%X\n", le32_to_cpu(mesh_access.data[0]));
 228 }
 229
 230 /**
 231  * @brief Set function for sysfs attribute anycast_mask
 232  */
 233 static ssize_t lbs_anycast_set(struct device *dev,
 234                 struct device_attribute *attr, const char * buf, size_t count)
 235 {
 236         struct cmd_ds_mesh_access mesh_access;
 237         uint32_t datum;
 238
 239         memset(&mesh_access, 0, sizeof(mesh_access));
 240         sscanf(buf, "%x", &datum);
 241         mesh_access.data[0] = cpu_to_le32(datum);
 242
 243         lbs_prepare_and_send_command((to_net_dev(dev))->priv,
 244                         CMD_MESH_ACCESS,
 245                         CMD_ACT_MESH_SET_ANYCAST,
 246                         CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
 247         return strlen(buf);
 248 }
 249
 250 int lbs_add_rtap(struct lbs_private *priv);
 251 void lbs_remove_rtap(struct lbs_private *priv);
 252
 253 /**
 254  * Get function for sysfs attribute rtap
 255  */
 256 static ssize_t lbs_rtap_get(struct device *dev,
 257                 struct device_attribute *attr, char * buf)
 258 {
 259         struct lbs_private *priv = to_net_dev(dev)->priv;
 260         return snprintf(buf, 5, "0x%X\n", priv->monitormode);
 261 }
 262
 263 /**
 264  *  Set function for sysfs attribute rtap
 265  */
 266 static ssize_t lbs_rtap_set(struct device *dev,
 267                 struct device_attribute *attr, const char * buf, size_t count)
 268 {
 269         int monitor_mode;
 270         struct lbs_private *priv = to_net_dev(dev)->priv;
 271
 272         sscanf(buf, "%x", &monitor_mode);
 273         if (monitor_mode != LBS_MONITOR_OFF) {
 274                 if(priv->monitormode == monitor_mode)
 275                         return strlen(buf);
 276                 if (priv->monitormode == LBS_MONITOR_OFF) {
 277                         if (priv->mode == IW_MODE_INFRA)
 278                                 lbs_send_deauthentication(priv);
 279                         else if (priv->mode == IW_MODE_ADHOC)
 280                                 lbs_stop_adhoc_network(priv);
 281                         lbs_add_rtap(priv);
 282                 }
 283                 priv->monitormode = monitor_mode;
 284         }
 285
 286         else {
 287                 if (priv->monitormode == LBS_MONITOR_OFF)
 288                         return strlen(buf);
 289                 priv->monitormode = LBS_MONITOR_OFF;
 290                 lbs_remove_rtap(priv);
 291
 292                 if (priv->currenttxskb) {
 293                         dev_kfree_skb_any(priv->currenttxskb);
 294                         priv->currenttxskb = NULL;
 295                 }
 296
 297                 /* Wake queues, command thread, etc. */
 298                 lbs_host_to_card_done(priv);
 299         }
 300
 301         lbs_prepare_and_send_command(priv,
 302                         CMD_802_11_MONITOR_MODE, CMD_ACT_SET,
 303                         CMD_OPTION_WAITFORRSP, 0, &priv->monitormode);
 304         return strlen(buf);
 305 }
 306
 307 /**
 308  * lbs_rtap attribute to be exported per mshX interface
 309  * through sysfs (/sys/class/net/mshX/libertas-rtap)
 310  */
 311 static DEVICE_ATTR(lbs_rtap, 0644, lbs_rtap_get,
 312                 lbs_rtap_set );
 313
 314 /**
 315  * anycast_mask attribute to be exported per mshX interface
 316  * through sysfs (/sys/class/net/mshX/anycast_mask)
 317  */
 318 static DEVICE_ATTR(anycast_mask, 0644, lbs_anycast_get, lbs_anycast_set);
 319
 320 static ssize_t lbs_autostart_enabled_get(struct device *dev,
 321                 struct device_attribute *attr, char * buf)
 322 {
 323         struct cmd_ds_mesh_access mesh_access;
 324
 325         memset(&mesh_access, 0, sizeof(mesh_access));
 326         lbs_prepare_and_send_command(to_net_dev(dev)->priv,
 327                         CMD_MESH_ACCESS,
 328                         CMD_ACT_MESH_GET_AUTOSTART_ENABLED,
 329                         CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
 330
 331         return sprintf(buf, "%d\n", le32_to_cpu(mesh_access.data[0]));
 332 }
 333
 334 static ssize_t lbs_autostart_enabled_set(struct device *dev,
 335                 struct device_attribute *attr, const char * buf, size_t count)
 336 {
 337         struct cmd_ds_mesh_access mesh_access;
 338         uint32_t datum;
 339         struct lbs_private *priv = (to_net_dev(dev))->priv;
 340         int ret;
 341
 342         memset(&mesh_access, 0, sizeof(mesh_access));
 343         sscanf(buf, "%d", &datum);
 344         mesh_access.data[0] = cpu_to_le32(datum);
 345
 346         ret = lbs_prepare_and_send_command(priv,
 347                         CMD_MESH_ACCESS,
 348                         CMD_ACT_MESH_SET_AUTOSTART_ENABLED,
 349                         CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
 350         if (ret == 0)
 351                 priv->mesh_autostart_enabled = datum ? 1 : 0;
 352
 353         return strlen(buf);
 354 }
 355
 356 static DEVICE_ATTR(autostart_enabled, 0644,
 357                 lbs_autostart_enabled_get, lbs_autostart_enabled_set);
 358
 359 static struct attribute *lbs_mesh_sysfs_entries[] = {
 360         &dev_attr_anycast_mask.attr,
 361         &dev_attr_autostart_enabled.attr,
 362         NULL,
 363 };
 364
 365 static struct attribute_group lbs_mesh_attr_group = {
 366         .attrs = lbs_mesh_sysfs_entries,
 367 };
 368
 369 /**
 370  *  @brief Check if the device can be open and wait if necessary.
 371  *
 372  *  @param dev     A pointer to net_device structure
 373  *  @return        0
 374  *
 375  * For USB adapter, on some systems the device open handler will be
 376  * called before FW ready. Use the following flag check and wait
 377  * function to work around the issue.
 378  *
 379  */
 380 static int pre_open_check(struct net_device *dev)
 381 {
 382         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 383         int i = 0;
 384
 385         while (!priv->fw_ready && i < 20) {
 386                 i++;
 387                 msleep_interruptible(100);
 388         }
 389         if (!priv->fw_ready) {
 390                 lbs_pr_err("firmware not ready\n");
 391                 return -1;
 392         }
 393
 394         return 0;
 395 }
 396
 397 /**
 398  *  @brief This function opens the device
 399  *
 400  *  @param dev     A pointer to net_device structure
 401  *  @return        0
 402  */
 403 static int lbs_dev_open(struct net_device *dev)
 404 {
 405         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 406
 407         lbs_deb_enter(LBS_DEB_NET);
 408
 409         priv->open = 1;
 410
 411         if (priv->connect_status == LBS_CONNECTED)
 412                 netif_carrier_on(priv->dev);
 413         else
 414                 netif_carrier_off(priv->dev);
 415
 416         if (priv->mesh_dev) {
 417                 if (priv->mesh_connect_status == LBS_CONNECTED)
 418                         netif_carrier_on(priv->mesh_dev);
 419                 else
 420                         netif_carrier_off(priv->mesh_dev);
 421         }
 422
 423         lbs_deb_leave(LBS_DEB_NET);
 424         return 0;
 425 }
 426 /**
 427  *  @brief This function opens the mshX interface
 428  *
 429  *  @param dev     A pointer to net_device structure
 430  *  @return        0
 431  */
 432 static int lbs_mesh_open(struct net_device *dev)
 433 {
 434         struct lbs_private *priv = (struct lbs_private *) dev->priv ;
 435
 436         if (pre_open_check(dev) == -1)
 437                 return -1;
 438         priv->mesh_open = 1 ;
 439         netif_wake_queue(priv->mesh_dev);
 440
 441         priv->mesh_connect_status = LBS_CONNECTED;
 442
 443         netif_carrier_on(priv->mesh_dev);
 444         netif_wake_queue(priv->mesh_dev);
 445         if (priv->infra_open == 0)
 446                 return lbs_dev_open(priv->dev) ;
 447         return 0;
 448 }
 449
 450 /**
 451  *  @brief This function opens the ethX interface
 452  *
 453  *  @param dev     A pointer to net_device structure
 454  *  @return        0
 455  */
 456 static int lbs_open(struct net_device *dev)
 457 {
 458         struct lbs_private *priv = (struct lbs_private *) dev->priv ;
 459
 460         if(pre_open_check(dev) == -1)
 461                 return -1;
 462         priv->infra_open = 1 ;
 463         netif_wake_queue(priv->dev);
 464         if (priv->open == 0)
 465                 return lbs_dev_open(priv->dev) ;
 466         return 0;
 467 }
 468
 469 static int lbs_dev_close(struct net_device *dev)
 470 {
 471         struct lbs_private *priv = dev->priv;
 472
 473         lbs_deb_enter(LBS_DEB_NET);
 474
 475         netif_carrier_off(priv->dev);
 476         priv->open = 0;
 477
 478         lbs_deb_leave(LBS_DEB_NET);
 479         return 0;
 480 }
 481
 482 /**
 483  *  @brief This function closes the mshX interface
 484  *
 485  *  @param dev     A pointer to net_device structure
 486  *  @return        0
 487  */
 488 static int lbs_mesh_close(struct net_device *dev)
 489 {
 490         struct lbs_private *priv = (struct lbs_private *) (dev->priv);
 491
 492         priv->mesh_open = 0;
 493         netif_stop_queue(priv->mesh_dev);
 494         if (priv->infra_open == 0)
 495                 return lbs_dev_close(dev);
 496         else
 497                 return 0;
 498 }
 499
 500 /**
 501  *  @brief This function closes the ethX interface
 502  *
 503  *  @param dev     A pointer to net_device structure
 504  *  @return        0
 505  */
 506 static int lbs_close(struct net_device *dev)
 507 {
 508         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 509
 510         netif_stop_queue(dev);
 511         priv->infra_open = 0;
 512         if (priv->mesh_open == 0)
 513                 return lbs_dev_close(dev);
 514         else
 515                 return 0;
 516 }
 517
 518 static void lbs_tx_timeout(struct net_device *dev)
 519 {
 520         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 521
 522         lbs_deb_enter(LBS_DEB_TX);
 523
 524         lbs_pr_err("tx watch dog timeout\n");
 525
 526         dev->trans_start = jiffies;
 527
 528         if (priv->currenttxskb) {
 529                 priv->eventcause = 0x01000000;
 530                 lbs_send_tx_feedback(priv);
 531         }
 532         /* XX: Shouldn't we also call into the hw-specific driver
 533            to kick it somehow? */
 534         lbs_host_to_card_done(priv);
 535
 536         lbs_deb_leave(LBS_DEB_TX);
 537 }
 538
 539 void lbs_host_to_card_done(struct lbs_private *priv)
 540 {
 541         unsigned long flags;
 542
 543         spin_lock_irqsave(&priv->driver_lock, flags);
 544
 545         priv->dnld_sent = DNLD_RES_RECEIVED;
 546
 547         /* Wake main thread if commands are pending */
 548         if (!priv->cur_cmd)
 549                 wake_up_interruptible(&priv->waitq);
 550
 551         /* Don't wake netif queues if we're in monitor mode and
 552            a TX packet is already pending, or if there are commands
 553            queued to be sent. */
 554         if (!priv->currenttxskb && list_empty(&priv->cmdpendingq)) {
 555                 if (priv->dev && priv->connect_status == LBS_CONNECTED)
 556                         netif_wake_queue(priv->dev);
 557
 558                 if (priv->mesh_dev && priv->mesh_connect_status == LBS_CONNECTED)
 559                         netif_wake_queue(priv->mesh_dev);
 560         }
 561         spin_unlock_irqrestore(&priv->driver_lock, flags);
 562 }
 563 EXPORT_SYMBOL_GPL(lbs_host_to_card_done);
 564
 565 /**
 566  *  @brief This function returns the network statistics
 567  *
 568  *  @param dev     A pointer to struct lbs_private structure
 569  *  @return        A pointer to net_device_stats structure
 570  */
 571 static struct net_device_stats *lbs_get_stats(struct net_device *dev)
 572 {
 573         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 574
 575         return &priv->stats;
 576 }
 577
 578 static int lbs_set_mac_address(struct net_device *dev, void *addr)
 579 {
 580         int ret = 0;
 581         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 582         struct sockaddr *phwaddr = addr;
 583
 584         lbs_deb_enter(LBS_DEB_NET);
 585
 586         /* In case it was called from the mesh device */
 587         dev = priv->dev ;
 588
 589         memset(priv->current_addr, 0, ETH_ALEN);
 590
 591         /* dev->dev_addr is 8 bytes */
 592         lbs_deb_hex(LBS_DEB_NET, "dev->dev_addr", dev->dev_addr, ETH_ALEN);
 593
 594         lbs_deb_hex(LBS_DEB_NET, "addr", phwaddr->sa_data, ETH_ALEN);
 595         memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN);
 596
 597         ret = lbs_prepare_and_send_command(priv, CMD_802_11_MAC_ADDRESS,
 598                                     CMD_ACT_SET,
 599                                     CMD_OPTION_WAITFORRSP, 0, NULL);
 600
 601         if (ret) {
 602                 lbs_deb_net("set MAC address failed\n");
 603                 ret = -1;
 604                 goto done;
 605         }
 606
 607         lbs_deb_hex(LBS_DEB_NET, "priv->macaddr", priv->current_addr, ETH_ALEN);
 608         memcpy(dev->dev_addr, priv->current_addr, ETH_ALEN);
 609         if (priv->mesh_dev)
 610                 memcpy(priv->mesh_dev->dev_addr, priv->current_addr, ETH_ALEN);
 611
 612 done:
 613         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 614         return ret;
 615 }
 616
 617 static int lbs_copy_multicast_address(struct lbs_private *priv,
 618                                      struct net_device *dev)
 619 {
 620         int i = 0;
 621         struct dev_mc_list *mcptr = dev->mc_list;
 622
 623         for (i = 0; i < dev->mc_count; i++) {
 624                 memcpy(&priv->multicastlist[i], mcptr->dmi_addr, ETH_ALEN);
 625                 mcptr = mcptr->next;
 626         }
 627
 628         return i;
 629
 630 }
 631
 632 static void lbs_set_multicast_list(struct net_device *dev)
 633 {
 634         struct lbs_private *priv = dev->priv;
 635         int oldpacketfilter;
 636         DECLARE_MAC_BUF(mac);
 637
 638         lbs_deb_enter(LBS_DEB_NET);
 639
 640         oldpacketfilter = priv->currentpacketfilter;
 641
 642         if (dev->flags & IFF_PROMISC) {
 643                 lbs_deb_net("enable promiscuous mode\n");
 644                 priv->currentpacketfilter |=
 645                     CMD_ACT_MAC_PROMISCUOUS_ENABLE;
 646                 priv->currentpacketfilter &=
 647                     ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
 648                       CMD_ACT_MAC_MULTICAST_ENABLE);
 649         } else {
 650                 /* Multicast */
 651                 priv->currentpacketfilter &=
 652                     ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
 653
 654                 if (dev->flags & IFF_ALLMULTI || dev->mc_count >
 655                     MRVDRV_MAX_MULTICAST_LIST_SIZE) {
 656                         lbs_deb_net( "enabling all multicast\n");
 657                         priv->currentpacketfilter |=
 658                             CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
 659                         priv->currentpacketfilter &=
 660                             ~CMD_ACT_MAC_MULTICAST_ENABLE;
 661                 } else {
 662                         priv->currentpacketfilter &=
 663                             ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
 664
 665                         if (!dev->mc_count) {
 666                                 lbs_deb_net("no multicast addresses, "
 667                                        "disabling multicast\n");
 668                                 priv->currentpacketfilter &=
 669                                     ~CMD_ACT_MAC_MULTICAST_ENABLE;
 670                         } else {
 671                                 int i;
 672
 673                                 priv->currentpacketfilter |=
 674                                     CMD_ACT_MAC_MULTICAST_ENABLE;
 675
 676                                 priv->nr_of_multicastmacaddr =
 677                                     lbs_copy_multicast_address(priv, dev);
 678
 679                                 lbs_deb_net("multicast addresses: %d\n",
 680                                        dev->mc_count);
 681
 682                                 for (i = 0; i < dev->mc_count; i++) {
 683                                         lbs_deb_net("Multicast address %d:%s\n",
 684                                                i, print_mac(mac,
 685                                                priv->multicastlist[i]));
 686                                 }
 687                                 /* send multicast addresses to firmware */
 688                                 lbs_prepare_and_send_command(priv,
 689                                                       CMD_MAC_MULTICAST_ADR,
 690                                                       CMD_ACT_SET, 0, 0,
 691                                                       NULL);
 692                         }
 693                 }
 694         }
 695
 696         if (priv->currentpacketfilter != oldpacketfilter) {
 697                 lbs_set_mac_packet_filter(priv);
 698         }
 699
 700         lbs_deb_leave(LBS_DEB_NET);
 701 }
 702
 703 /**
 704  *  @brief This function handles the major jobs in the LBS driver.
 705  *  It handles all events generated by firmware, RX data received
 706  *  from firmware and TX data sent from kernel.
 707  *
 708  *  @param data    A pointer to lbs_thread structure
 709  *  @return        0
 710  */
 711 static int lbs_thread(void *data)
 712 {
 713         struct net_device *dev = data;
 714         struct lbs_private *priv = dev->priv;
 715         wait_queue_t wait;
 716         u8 ireg = 0;
 717
 718         lbs_deb_enter(LBS_DEB_THREAD);
 719
 720         init_waitqueue_entry(&wait, current);
 721
 722         set_freezable();
 723
 724         for (;;) {
 725                 int shouldsleep;
 726
 727                 lbs_deb_thread( "main-thread 111: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
 728                                 priv->intcounter, priv->currenttxskb, priv->dnld_sent);
 729
 730                 add_wait_queue(&priv->waitq, &wait);
 731                 set_current_state(TASK_INTERRUPTIBLE);
 732                 spin_lock_irq(&priv->driver_lock);
 733
 734                 if (priv->surpriseremoved)
 735                         shouldsleep = 0;        /* Bye */
 736                 else if (priv->psstate == PS_STATE_SLEEP)
 737                         shouldsleep = 1;        /* Sleep mode. Nothing we can do till it wakes */
 738                 else if (priv->intcounter)
 739                         shouldsleep = 0;        /* Interrupt pending. Deal with it now */
 740                 else if (priv->dnld_sent)
 741                         shouldsleep = 1;        /* Something is en route to the device already */
 742                 else if (priv->tx_pending_len > 0)
 743                         shouldsleep = 0;        /* We've a packet to send */
 744                 else if (priv->cur_cmd)
 745                         shouldsleep = 1;        /* Can't send a command; one already running */
 746                 else if (!list_empty(&priv->cmdpendingq))
 747                         shouldsleep = 0;        /* We have a command to send */
 748                 else
 749                         shouldsleep = 1;        /* No command */
 750
 751                 if (shouldsleep) {
 752                         lbs_deb_thread("main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
 753                                        priv->connect_status, priv->intcounter,
 754                                        priv->psmode, priv->psstate);
 755                         spin_unlock_irq(&priv->driver_lock);
 756                         schedule();
 757                 } else
 758                         spin_unlock_irq(&priv->driver_lock);
 759
 760                 lbs_deb_thread("main-thread 222 (waking up): intcounter=%d currenttxskb=%p dnld_sent=%d\n",
 761                                priv->intcounter, priv->currenttxskb, priv->dnld_sent);
 762
 763                 set_current_state(TASK_RUNNING);
 764                 remove_wait_queue(&priv->waitq, &wait);
 765                 try_to_freeze();
 766
 767                 lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
 768                                priv->intcounter, priv->currenttxskb, priv->dnld_sent);
 769
 770                 if (kthread_should_stop() || priv->surpriseremoved) {
 771                         lbs_deb_thread("main-thread: break from main thread: surpriseremoved=0x%x\n",
 772                                        priv->surpriseremoved);
 773                         break;
 774                 }
 775
 776
 777                 spin_lock_irq(&priv->driver_lock);
 778
 779                 if (priv->intcounter) {
 780                         u8 int_status;
 781
 782                         priv->intcounter = 0;
 783                         int_status = priv->hw_get_int_status(priv, &ireg);
 784
 785                         if (int_status) {
 786                                 lbs_deb_thread("main-thread: reading HOST_INT_STATUS_REG failed\n");
 787                                 spin_unlock_irq(&priv->driver_lock);
 788                                 continue;
 789                         }
 790                         priv->hisregcpy |= ireg;
 791                 }
 792
 793                 lbs_deb_thread("main-thread 444: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
 794                                priv->intcounter, priv->currenttxskb, priv->dnld_sent);
 795
 796                 /* command response? */
 797                 if (priv->hisregcpy & MRVDRV_CMD_UPLD_RDY) {
 798                         lbs_deb_thread("main-thread: cmd response ready\n");
 799
 800                         priv->hisregcpy &= ~MRVDRV_CMD_UPLD_RDY;
 801                         spin_unlock_irq(&priv->driver_lock);
 802                         lbs_process_rx_command(priv);
 803                         spin_lock_irq(&priv->driver_lock);
 804                 }
 805
 806                 /* Any Card Event */
 807                 if (priv->hisregcpy & MRVDRV_CARDEVENT) {
 808                         lbs_deb_thread("main-thread: Card Event Activity\n");
 809
 810                         priv->hisregcpy &= ~MRVDRV_CARDEVENT;
 811
 812                         if (priv->hw_read_event_cause(priv)) {
 813                                 lbs_pr_alert("main-thread: hw_read_event_cause failed\n");
 814                                 spin_unlock_irq(&priv->driver_lock);
 815                                 continue;
 816                         }
 817                         spin_unlock_irq(&priv->driver_lock);
 818                         lbs_process_event(priv);
 819                 } else
 820                         spin_unlock_irq(&priv->driver_lock);
 821
 822                 /* Check if we need to confirm Sleep Request received previously */
 823                 if (priv->psstate == PS_STATE_PRE_SLEEP &&
 824                     !priv->dnld_sent && !priv->cur_cmd) {
 825                         if (priv->connect_status == LBS_CONNECTED) {
 826                                 lbs_deb_thread("main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p dnld_sent=%d cur_cmd=%p, confirm now\n",
 827                                                priv->intcounter, priv->currenttxskb, priv->dnld_sent, priv->cur_cmd);
 828
 829                                 lbs_ps_confirm_sleep(priv, (u16) priv->psmode);
 830                         } else {
 831                                 /* workaround for firmware sending
 832                                  * deauth/linkloss event immediately
 833                                  * after sleep request; remove this
 834                                  * after firmware fixes it
 835                                  */
 836                                 priv->psstate = PS_STATE_AWAKE;
 837                                 lbs_pr_alert("main-thread: ignore PS_SleepConfirm in non-connected state\n");
 838                         }
 839                 }
 840
 841                 /* The PS state is changed during processing of Sleep Request
 842                  * event above
 843                  */
 844                 if ((priv->psstate == PS_STATE_SLEEP) ||
 845                     (priv->psstate == PS_STATE_PRE_SLEEP))
 846                         continue;
 847
 848                 /* Execute the next command */
 849                 if (!priv->dnld_sent && !priv->cur_cmd)
 850                         lbs_execute_next_command(priv);
 851
 852                 /* Wake-up command waiters which can't sleep in
 853                  * lbs_prepare_and_send_command
 854                  */
 855                 if (!list_empty(&priv->cmdpendingq))
 856                         wake_up_all(&priv->cmd_pending);
 857
 858                 spin_lock_irq(&priv->driver_lock);
 859                 if (!priv->dnld_sent && priv->tx_pending_len > 0) {
 860                         int ret = priv->hw_host_to_card(priv, MVMS_DAT,
 861                                                         priv->tx_pending_buf,
 862                                                         priv->tx_pending_len);
 863                         if (ret) {
 864                                 lbs_deb_tx("host_to_card failed %d\n", ret);
 865                                 priv->dnld_sent = DNLD_RES_RECEIVED;
 866                         }
 867                         priv->tx_pending_len = 0;
 868                         if (!priv->currenttxskb) {
 869                                 /* We can wake the queues immediately if we aren't
 870                                    waiting for TX feedback */
 871                                 if (priv->connect_status == LBS_CONNECTED)
 872                                         netif_wake_queue(priv->dev);
 873                                 if (priv->mesh_dev &&
 874                                     priv->mesh_connect_status == LBS_CONNECTED)
 875                                         netif_wake_queue(priv->mesh_dev);
 876                         }
 877                 }
 878                 spin_unlock_irq(&priv->driver_lock);
 879         }
 880
 881         del_timer(&priv->command_timer);
 882         wake_up_all(&priv->cmd_pending);
 883
 884         lbs_deb_leave(LBS_DEB_THREAD);
 885         return 0;
 886 }
 887
 888 /**
 889  *  @brief This function downloads firmware image, gets
 890  *  HW spec from firmware and set basic parameters to
 891  *  firmware.
 892  *
 893  *  @param priv    A pointer to struct lbs_private structure
 894  *  @return        0 or -1
 895  */
 896 static int lbs_setup_firmware(struct lbs_private *priv)
 897 {
 898         int ret = -1;
 899         struct cmd_ds_mesh_access mesh_access;
 900
 901         lbs_deb_enter(LBS_DEB_FW);
 902
 903         /*
 904          * Read MAC address from HW
 905          */
 906         memset(priv->current_addr, 0xff, ETH_ALEN);
 907
 908         ret = lbs_prepare_and_send_command(priv, CMD_GET_HW_SPEC,
 909                                     0, CMD_OPTION_WAITFORRSP, 0, NULL);
 910
 911         if (ret) {
 912                 ret = -1;
 913                 goto done;
 914         }
 915
 916         lbs_set_mac_packet_filter(priv);
 917
 918         /* Get the supported Data rates */
 919         ret = lbs_prepare_and_send_command(priv, CMD_802_11_DATA_RATE,
 920                                     CMD_ACT_GET_TX_RATE,
 921                                     CMD_OPTION_WAITFORRSP, 0, NULL);
 922
 923         if (ret) {
 924                 ret = -1;
 925                 goto done;
 926         }
 927
 928         /* Disable mesh autostart */
 929         if (priv->mesh_dev) {
 930                 memset(&mesh_access, 0, sizeof(mesh_access));
 931                 mesh_access.data[0] = cpu_to_le32(0);
 932                 ret = lbs_prepare_and_send_command(priv,
 933                                 CMD_MESH_ACCESS,
 934                                 CMD_ACT_MESH_SET_AUTOSTART_ENABLED,
 935                                 CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
 936                 if (ret) {
 937                         ret = -1;
 938                         goto done;
 939                 }
 940                 priv->mesh_autostart_enabled = 0;
 941         }
 942
 943         ret = 0;
 944 done:
 945         lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
 946         return ret;
 947 }
 948
 949 /**
 950  *  This function handles the timeout of command sending.
 951  *  It will re-send the same command again.
 952  */
 953 static void command_timer_fn(unsigned long data)
 954 {
 955         struct lbs_private *priv = (struct lbs_private *)data;
 956         struct cmd_ctrl_node *ptempnode;
 957         struct cmd_ds_command *cmd;
 958         unsigned long flags;
 959
 960         ptempnode = priv->cur_cmd;
 961         if (ptempnode == NULL) {
 962                 lbs_deb_fw("ptempnode empty\n");
 963                 return;
 964         }
 965
 966         cmd = (struct cmd_ds_command *)ptempnode->bufvirtualaddr;
 967         if (!cmd) {
 968                 lbs_deb_fw("cmd is NULL\n");
 969                 return;
 970         }
 971
 972         lbs_deb_fw("command_timer_fn fired, cmd %x\n", cmd->command);
 973
 974         if (!priv->fw_ready)
 975                 return;
 976
 977         spin_lock_irqsave(&priv->driver_lock, flags);
 978         priv->cur_cmd = NULL;
 979         spin_unlock_irqrestore(&priv->driver_lock, flags);
 980
 981         lbs_deb_fw("re-sending same command because of timeout\n");
 982         lbs_queue_cmd(priv, ptempnode, 0);
 983
 984         wake_up_interruptible(&priv->waitq);
 985
 986         return;
 987 }
 988
 989 static int lbs_init_adapter(struct lbs_private *priv)
 990 {
 991         size_t bufsize;
 992         int i, ret = 0;
 993
 994         /* Allocate buffer to store the BSSID list */
 995         bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
 996         priv->networks = kzalloc(bufsize, GFP_KERNEL);
 997         if (!priv->networks) {
 998                 lbs_pr_err("Out of memory allocating beacons\n");
 999                 ret = -1;
1000                 goto out;
1001         }
1002
1003         /* Initialize scan result lists */
1004         INIT_LIST_HEAD(&priv->network_free_list);
1005         INIT_LIST_HEAD(&priv->network_list);
1006         for (i = 0; i < MAX_NETWORK_COUNT; i++) {
1007                 list_add_tail(&priv->networks[i].list,
1008                               &priv->network_free_list);
1009         }
1010
1011         priv->lbs_ps_confirm_sleep.seqnum = cpu_to_le16(++priv->seqnum);
1012         priv->lbs_ps_confirm_sleep.command =
1013             cpu_to_le16(CMD_802_11_PS_MODE);
1014         priv->lbs_ps_confirm_sleep.size =
1015             cpu_to_le16(sizeof(struct PS_CMD_ConfirmSleep));
1016         priv->lbs_ps_confirm_sleep.action =
1017             cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
1018
1019         memset(priv->current_addr, 0xff, ETH_ALEN);
1020
1021         priv->connect_status = LBS_DISCONNECTED;
1022         priv->mesh_connect_status = LBS_DISCONNECTED;
1023         priv->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
1024         priv->mode = IW_MODE_INFRA;
1025         priv->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;
1026         priv->currentpacketfilter = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
1027         priv->radioon = RADIO_ON;
1028         priv->auto_rate = 1;
1029         priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
1030         priv->psmode = LBS802_11POWERMODECAM;
1031         priv->psstate = PS_STATE_FULL_POWER;
1032
1033         mutex_init(&priv->lock);
1034
1035         setup_timer(&priv->command_timer, command_timer_fn,
1036                     (unsigned long)priv);
1037
1038         INIT_LIST_HEAD(&priv->cmdfreeq);
1039         INIT_LIST_HEAD(&priv->cmdpendingq);
1040
1041         spin_lock_init(&priv->driver_lock);
1042         init_waitqueue_head(&priv->cmd_pending);
1043
1044         /* Allocate the command buffers */
1045         if (lbs_allocate_cmd_buffer(priv)) {
1046                 lbs_pr_err("Out of memory allocating command buffers\n");
1047                 ret = -1;
1048         }
1049
1050 out:
1051         return ret;
1052 }
1053
1054 static void lbs_free_adapter(struct lbs_private *priv)
1055 {
1056         lbs_deb_fw("free command buffer\n");
1057         lbs_free_cmd_buffer(priv);
1058
1059         lbs_deb_fw("free command_timer\n");
1060         del_timer(&priv->command_timer);
1061
1062         lbs_deb_fw("free scan results table\n");
1063         kfree(priv->networks);
1064         priv->networks = NULL;
1065 }
1066
1067 /**
1068  * @brief This function adds the card. it will probe the
1069  * card, allocate the lbs_priv and initialize the device.
1070  *
1071  *  @param card    A pointer to card
1072  *  @return        A pointer to struct lbs_private structure
1073  */
1074 struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
1075 {
1076         struct net_device *dev = NULL;
1077         struct lbs_private *priv = NULL;
1078
1079         lbs_deb_enter(LBS_DEB_NET);
1080
1081         /* Allocate an Ethernet device and register it */
1082         dev = alloc_etherdev(sizeof(struct lbs_private));
1083         if (!dev) {
1084                 lbs_pr_err("init ethX device failed\n");
1085                 goto done;
1086         }
1087         priv = dev->priv;
1088
1089         if (lbs_init_adapter(priv)) {
1090                 lbs_pr_err("failed to initialize adapter structure.\n");
1091                 goto err_init_adapter;
1092         }
1093
1094         priv->dev = dev;
1095         priv->card = card;
1096         priv->mesh_open = 0;
1097         priv->infra_open = 0;
1098
1099         /* Setup the OS Interface to our functions */
1100         dev->open = lbs_open;
1101         dev->hard_start_xmit = lbs_hard_start_xmit;
1102         dev->stop = lbs_close;
1103         dev->set_mac_address = lbs_set_mac_address;
1104         dev->tx_timeout = lbs_tx_timeout;
1105         dev->get_stats = lbs_get_stats;
1106         dev->watchdog_timeo = 5 * HZ;
1107         dev->ethtool_ops = &lbs_ethtool_ops;
1108 #ifdef  WIRELESS_EXT
1109         dev->wireless_handlers = (struct iw_handler_def *)&lbs_handler_def;
1110 #endif
1111         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1112         dev->set_multicast_list = lbs_set_multicast_list;
1113
1114         SET_NETDEV_DEV(dev, dmdev);
1115
1116         priv->rtap_net_dev = NULL;
1117
1118         lbs_deb_thread("Starting main thread...\n");
1119         init_waitqueue_head(&priv->waitq);
1120         priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
1121         if (IS_ERR(priv->main_thread)) {
1122                 lbs_deb_thread("Error creating main thread.\n");
1123                 goto err_init_adapter;
1124         }
1125
1126         priv->work_thread = create_singlethread_workqueue("lbs_worker");
1127         INIT_DELAYED_WORK(&priv->assoc_work, lbs_association_worker);
1128         INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
1129         INIT_WORK(&priv->sync_channel, lbs_sync_channel);
1130
1131         goto done;
1132
1133 err_init_adapter:
1134         lbs_free_adapter(priv);
1135         free_netdev(dev);
1136         priv = NULL;
1137
1138 done:
1139         lbs_deb_leave_args(LBS_DEB_NET, "priv %p", priv);
1140         return priv;
1141 }
1142 EXPORT_SYMBOL_GPL(lbs_add_card);
1143
1144
1145 int lbs_remove_card(struct lbs_private *priv)
1146 {
1147         struct net_device *dev = priv->dev;
1148         union iwreq_data wrqu;
1149
1150         lbs_deb_enter(LBS_DEB_MAIN);
1151
1152         lbs_remove_rtap(priv);
1153
1154         dev = priv->dev;
1155         device_remove_file(&dev->dev, &dev_attr_lbs_rtap);
1156
1157         cancel_delayed_work(&priv->scan_work);
1158         cancel_delayed_work(&priv->assoc_work);
1159         destroy_workqueue(priv->work_thread);
1160
1161         if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
1162                 priv->psmode = LBS802_11POWERMODECAM;
1163                 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1164         }
1165
1166         memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1167         wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1168         wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1169
1170         /* Stop the thread servicing the interrupts */
1171         priv->surpriseremoved = 1;
1172         kthread_stop(priv->main_thread);
1173
1174         lbs_free_adapter(priv);
1175
1176         priv->dev = NULL;
1177         free_netdev(dev);
1178
1179         lbs_deb_leave(LBS_DEB_MAIN);
1180         return 0;
1181 }
1182 EXPORT_SYMBOL_GPL(lbs_remove_card);
1183
1184
1185 int lbs_start_card(struct lbs_private *priv)
1186 {
1187         struct net_device *dev = priv->dev;
1188         int ret = -1;
1189
1190         lbs_deb_enter(LBS_DEB_MAIN);
1191
1192         /* poke the firmware */
1193         ret = lbs_setup_firmware(priv);
1194         if (ret)
1195                 goto done;
1196
1197         /* init 802.11d */
1198         lbs_init_11d(priv);
1199
1200         if (register_netdev(dev)) {
1201                 lbs_pr_err("cannot register ethX device\n");
1202                 goto done;
1203         }
1204         if (device_create_file(&dev->dev, &dev_attr_lbs_rtap))
1205                 lbs_pr_err("cannot register lbs_rtap attribute\n");
1206
1207         lbs_debugfs_init_one(priv, dev);
1208
1209         lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
1210
1211         ret = 0;
1212
1213 done:
1214         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1215         return ret;
1216 }
1217 EXPORT_SYMBOL_GPL(lbs_start_card);
1218
1219
1220 int lbs_stop_card(struct lbs_private *priv)
1221 {
1222         struct net_device *dev = priv->dev;
1223         int ret = -1;
1224         struct cmd_ctrl_node *cmdnode;
1225         unsigned long flags;
1226
1227         lbs_deb_enter(LBS_DEB_MAIN);
1228
1229         netif_stop_queue(priv->dev);
1230         netif_carrier_off(priv->dev);
1231
1232         lbs_debugfs_remove_one(priv);
1233
1234         /* Flush pending command nodes */
1235         spin_lock_irqsave(&priv->driver_lock, flags);
1236         list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
1237                 cmdnode->cmdwaitqwoken = 1;
1238                 wake_up_interruptible(&cmdnode->cmdwait_q);
1239         }
1240         spin_unlock_irqrestore(&priv->driver_lock, flags);
1241
1242         unregister_netdev(dev);
1243
1244         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1245         return ret;
1246 }
1247 EXPORT_SYMBOL_GPL(lbs_stop_card);
1248
1249
1250 /**
1251  * @brief This function adds mshX interface
1252  *
1253  *  @param priv    A pointer to the struct lbs_private structure
1254  *  @return        0 if successful, -X otherwise
1255  */
1256 int lbs_add_mesh(struct lbs_private *priv, struct device *dev)
1257 {
1258         struct net_device *mesh_dev = NULL;
1259         int ret = 0;
1260
1261         lbs_deb_enter(LBS_DEB_MESH);
1262
1263         /* Allocate a virtual mesh device */
1264         if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
1265                 lbs_deb_mesh("init mshX device failed\n");
1266                 ret = -ENOMEM;
1267                 goto done;
1268         }
1269         mesh_dev->priv = priv;
1270         priv->mesh_dev = mesh_dev;
1271
1272         mesh_dev->open = lbs_mesh_open;
1273         mesh_dev->hard_start_xmit = lbs_hard_start_xmit;
1274         mesh_dev->stop = lbs_mesh_close;
1275         mesh_dev->get_stats = lbs_get_stats;
1276         mesh_dev->set_mac_address = lbs_set_mac_address;
1277         mesh_dev->ethtool_ops = &lbs_ethtool_ops;
1278         memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
1279                         sizeof(priv->dev->dev_addr));
1280
1281         SET_NETDEV_DEV(priv->mesh_dev, dev);
1282
1283 #ifdef  WIRELESS_EXT
1284         mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
1285 #endif
1286         /* Register virtual mesh interface */
1287         ret = register_netdev(mesh_dev);
1288         if (ret) {
1289                 lbs_pr_err("cannot register mshX virtual interface\n");
1290                 goto err_free;
1291         }
1292
1293         ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1294         if (ret)
1295                 goto err_unregister;
1296
1297         /* Everything successful */
1298         ret = 0;
1299         goto done;
1300
1301 err_unregister:
1302         unregister_netdev(mesh_dev);
1303
1304 err_free:
1305         free_netdev(mesh_dev);
1306
1307 done:
1308         lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1309         return ret;
1310 }
1311 EXPORT_SYMBOL_GPL(lbs_add_mesh);
1312
1313
1314 void lbs_remove_mesh(struct lbs_private *priv)
1315 {
1316         struct net_device *mesh_dev;
1317
1318         lbs_deb_enter(LBS_DEB_MAIN);
1319
1320         if (!priv)
1321                 goto out;
1322
1323         mesh_dev = priv->mesh_dev;
1324
1325         netif_stop_queue(mesh_dev);
1326         netif_carrier_off(priv->mesh_dev);
1327
1328         sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1329         unregister_netdev(mesh_dev);
1330
1331         priv->mesh_dev = NULL ;
1332         free_netdev(mesh_dev);
1333
1334 out:
1335         lbs_deb_leave(LBS_DEB_MAIN);
1336 }
1337 EXPORT_SYMBOL_GPL(lbs_remove_mesh);
1338
1339 /**
1340  *  @brief This function finds the CFP in
1341  *  region_cfp_table based on region and band parameter.
1342  *
1343  *  @param region  The region code
1344  *  @param band    The band
1345  *  @param cfp_no  A pointer to CFP number
1346  *  @return        A pointer to CFP
1347  */
1348 struct chan_freq_power *lbs_get_region_cfp_table(u8 region, u8 band, int *cfp_no)
1349 {
1350         int i, end;
1351
1352         lbs_deb_enter(LBS_DEB_MAIN);
1353
1354         end = ARRAY_SIZE(region_cfp_table);
1355
1356         for (i = 0; i < end ; i++) {
1357                 lbs_deb_main("region_cfp_table[i].region=%d\n",
1358                         region_cfp_table[i].region);
1359                 if (region_cfp_table[i].region == region) {
1360                         *cfp_no = region_cfp_table[i].cfp_no_BG;
1361                         lbs_deb_leave(LBS_DEB_MAIN);
1362                         return region_cfp_table[i].cfp_BG;
1363                 }
1364         }
1365
1366         lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1367         return NULL;
1368 }
1369
1370 int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band)
1371 {
1372         int ret = 0;
1373         int i = 0;
1374
1375         struct chan_freq_power *cfp;
1376         int cfp_no;
1377
1378         lbs_deb_enter(LBS_DEB_MAIN);
1379
1380         memset(priv->region_channel, 0, sizeof(priv->region_channel));
1381
1382         {
1383                 cfp = lbs_get_region_cfp_table(region, band, &cfp_no);
1384                 if (cfp != NULL) {
1385                         priv->region_channel[i].nrcfp = cfp_no;
1386                         priv->region_channel[i].CFP = cfp;
1387                 } else {
1388                         lbs_deb_main("wrong region code %#x in band B/G\n",
1389                                region);
1390                         ret = -1;
1391                         goto out;
1392                 }
1393                 priv->region_channel[i].valid = 1;
1394                 priv->region_channel[i].region = region;
1395                 priv->region_channel[i].band = band;
1396                 i++;
1397         }
1398 out:
1399         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1400         return ret;
1401 }
1402
1403 /**
1404  *  @brief This function handles the interrupt. it will change PS
1405  *  state if applicable. it will wake up main_thread to handle
1406  *  the interrupt event as well.
1407  *
1408  *  @param dev     A pointer to net_device structure
1409  *  @return        n/a
1410  */
1411 void lbs_interrupt(struct lbs_private *priv)
1412 {
1413         lbs_deb_enter(LBS_DEB_THREAD);
1414
1415         lbs_deb_thread("lbs_interrupt: intcounter=%d\n", priv->intcounter);
1416
1417         if (spin_trylock(&priv->driver_lock)) {
1418                 spin_unlock(&priv->driver_lock);
1419                 printk(KERN_CRIT "%s called without driver_lock held\n", __func__);
1420                 WARN_ON(1);
1421         }
1422
1423         priv->intcounter++;
1424
1425         if (priv->psstate == PS_STATE_SLEEP)
1426                 priv->psstate = PS_STATE_AWAKE;
1427
1428         wake_up_interruptible(&priv->waitq);
1429
1430         lbs_deb_leave(LBS_DEB_THREAD);
1431 }
1432 EXPORT_SYMBOL_GPL(lbs_interrupt);
1433
1434 int lbs_reset_device(struct lbs_private *priv)
1435 {
1436         int ret;
1437
1438         lbs_deb_enter(LBS_DEB_MAIN);
1439         ret = lbs_prepare_and_send_command(priv, CMD_802_11_RESET,
1440                                     CMD_ACT_HALT, 0, 0, NULL);
1441         msleep_interruptible(10);
1442
1443         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1444         return ret;
1445 }
1446 EXPORT_SYMBOL_GPL(lbs_reset_device);
1447
1448 static int __init lbs_init_module(void)
1449 {
1450         lbs_deb_enter(LBS_DEB_MAIN);
1451         lbs_debugfs_init();
1452         lbs_deb_leave(LBS_DEB_MAIN);
1453         return 0;
1454 }
1455
1456 static void __exit lbs_exit_module(void)
1457 {
1458         lbs_deb_enter(LBS_DEB_MAIN);
1459
1460         lbs_debugfs_remove();
1461
1462         lbs_deb_leave(LBS_DEB_MAIN);
1463 }
1464
1465 /*
1466  * rtap interface support fuctions
1467  */
1468
1469 static int lbs_rtap_open(struct net_device *dev)
1470 {
1471         netif_carrier_off(dev);
1472         netif_stop_queue(dev);
1473         return 0;
1474 }
1475
1476 static int lbs_rtap_stop(struct net_device *dev)
1477 {
1478         return 0;
1479 }
1480
1481 static int lbs_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1482 {
1483         netif_stop_queue(dev);
1484         return -EOPNOTSUPP;
1485 }
1486
1487 static struct net_device_stats *lbs_rtap_get_stats(struct net_device *dev)
1488 {
1489         struct lbs_private *priv = dev->priv;
1490         return &priv->stats;
1491 }
1492
1493
1494 void lbs_remove_rtap(struct lbs_private *priv)
1495 {
1496         if (priv->rtap_net_dev == NULL)
1497                 return;
1498         unregister_netdev(priv->rtap_net_dev);
1499         free_netdev(priv->rtap_net_dev);
1500         priv->rtap_net_dev = NULL;
1501 }
1502
1503 int lbs_add_rtap(struct lbs_private *priv)
1504 {
1505         int rc = 0;
1506         struct net_device *rtap_dev;
1507
1508         if (priv->rtap_net_dev)
1509                 return -EPERM;
1510
1511         rtap_dev = alloc_netdev(0, "rtap%d", ether_setup);
1512         if (rtap_dev == NULL)
1513                 return -ENOMEM;
1514
1515         memcpy(rtap_dev->dev_addr, priv->current_addr, ETH_ALEN);
1516         rtap_dev->type = ARPHRD_IEEE80211_RADIOTAP;
1517         rtap_dev->open = lbs_rtap_open;
1518         rtap_dev->stop = lbs_rtap_stop;
1519         rtap_dev->get_stats = lbs_rtap_get_stats;
1520         rtap_dev->hard_start_xmit = lbs_rtap_hard_start_xmit;
1521         rtap_dev->set_multicast_list = lbs_set_multicast_list;
1522         rtap_dev->priv = priv;
1523
1524         rc = register_netdev(rtap_dev);
1525         if (rc) {
1526                 free_netdev(rtap_dev);
1527                 return rc;
1528         }
1529         priv->rtap_net_dev = rtap_dev;
1530
1531         return 0;
1532 }
1533
1534
1535 module_init(lbs_init_module);
1536 module_exit(lbs_exit_module);
1537
1538 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1539 MODULE_AUTHOR("Marvell International Ltd.");
1540 MODULE_LICENSE("GPL");