git.oblomov.eu Git - linux-2.6/blob - 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 = (struct lbs_private *)
 260                 (to_net_dev(dev))->priv;
 261         struct lbs_adapter *adapter = priv->adapter;
 262         return snprintf(buf, 5, "0x%X\n", adapter->monitormode);
 263 }
 264
 265 /**
 266  *  Set function for sysfs attribute rtap
 267  */
 268 static ssize_t lbs_rtap_set(struct device *dev,
 269                 struct device_attribute *attr, const char * buf, size_t count)
 270 {
 271         int monitor_mode;
 272         struct lbs_private *priv = (struct lbs_private *)
 273                 (to_net_dev(dev))->priv;
 274         struct lbs_adapter *adapter = priv->adapter;
 275
 276         sscanf(buf, "%x", &monitor_mode);
 277         if (monitor_mode != LBS_MONITOR_OFF) {
 278                 if(adapter->monitormode == monitor_mode)
 279                         return strlen(buf);
 280                 if (adapter->monitormode == LBS_MONITOR_OFF) {
 281                         if (adapter->mode == IW_MODE_INFRA)
 282                                 lbs_send_deauthentication(priv);
 283                         else if (adapter->mode == IW_MODE_ADHOC)
 284                                 lbs_stop_adhoc_network(priv);
 285                         lbs_add_rtap(priv);
 286                 }
 287                 adapter->monitormode = monitor_mode;
 288         }
 289
 290         else {
 291                 if (adapter->monitormode == LBS_MONITOR_OFF)
 292                         return strlen(buf);
 293                 adapter->monitormode = LBS_MONITOR_OFF;
 294                 lbs_remove_rtap(priv);
 295                 netif_wake_queue(priv->dev);
 296                 netif_wake_queue(priv->mesh_dev);
 297         }
 298
 299         lbs_prepare_and_send_command(priv,
 300                         CMD_802_11_MONITOR_MODE, CMD_ACT_SET,
 301                         CMD_OPTION_WAITFORRSP, 0, &adapter->monitormode);
 302         return strlen(buf);
 303 }
 304
 305 /**
 306  * lbs_rtap attribute to be exported per mshX interface
 307  * through sysfs (/sys/class/net/mshX/libertas-rtap)
 308  */
 309 static DEVICE_ATTR(lbs_rtap, 0644, lbs_rtap_get,
 310                 lbs_rtap_set );
 311
 312 /**
 313  * anycast_mask attribute to be exported per mshX interface
 314  * through sysfs (/sys/class/net/mshX/anycast_mask)
 315  */
 316 static DEVICE_ATTR(anycast_mask, 0644, lbs_anycast_get, lbs_anycast_set);
 317
 318 static ssize_t lbs_autostart_enabled_get(struct device *dev,
 319                 struct device_attribute *attr, char * buf)
 320 {
 321         struct cmd_ds_mesh_access mesh_access;
 322
 323         memset(&mesh_access, 0, sizeof(mesh_access));
 324         lbs_prepare_and_send_command(to_net_dev(dev)->priv,
 325                         CMD_MESH_ACCESS,
 326                         CMD_ACT_MESH_GET_AUTOSTART_ENABLED,
 327                         CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
 328
 329         return sprintf(buf, "%d\n", le32_to_cpu(mesh_access.data[0]));
 330 }
 331
 332 static ssize_t lbs_autostart_enabled_set(struct device *dev,
 333                 struct device_attribute *attr, const char * buf, size_t count)
 334 {
 335         struct cmd_ds_mesh_access mesh_access;
 336         uint32_t datum;
 337         struct lbs_private *priv = (to_net_dev(dev))->priv;
 338         int ret;
 339
 340         memset(&mesh_access, 0, sizeof(mesh_access));
 341         sscanf(buf, "%d", &datum);
 342         mesh_access.data[0] = cpu_to_le32(datum);
 343
 344         ret = lbs_prepare_and_send_command(priv,
 345                         CMD_MESH_ACCESS,
 346                         CMD_ACT_MESH_SET_AUTOSTART_ENABLED,
 347                         CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
 348         if (ret == 0)
 349                 priv->mesh_autostart_enabled = datum ? 1 : 0;
 350
 351         return strlen(buf);
 352 }
 353
 354 static DEVICE_ATTR(autostart_enabled, 0644,
 355                 lbs_autostart_enabled_get, lbs_autostart_enabled_set);
 356
 357 static struct attribute *lbs_mesh_sysfs_entries[] = {
 358         &dev_attr_anycast_mask.attr,
 359         &dev_attr_autostart_enabled.attr,
 360         NULL,
 361 };
 362
 363 static struct attribute_group lbs_mesh_attr_group = {
 364         .attrs = lbs_mesh_sysfs_entries,
 365 };
 366
 367 /**
 368  *  @brief Check if the device can be open and wait if necessary.
 369  *
 370  *  @param dev     A pointer to net_device structure
 371  *  @return        0
 372  *
 373  * For USB adapter, on some systems the device open handler will be
 374  * called before FW ready. Use the following flag check and wait
 375  * function to work around the issue.
 376  *
 377  */
 378 static int pre_open_check(struct net_device *dev)
 379 {
 380         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 381         struct lbs_adapter *adapter = priv->adapter;
 382         int i = 0;
 383
 384         while (!adapter->fw_ready && i < 20) {
 385                 i++;
 386                 msleep_interruptible(100);
 387         }
 388         if (!adapter->fw_ready) {
 389                 lbs_pr_err("firmware not ready\n");
 390                 return -1;
 391         }
 392
 393         return 0;
 394 }
 395
 396 /**
 397  *  @brief This function opens the device
 398  *
 399  *  @param dev     A pointer to net_device structure
 400  *  @return        0
 401  */
 402 static int lbs_dev_open(struct net_device *dev)
 403 {
 404         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 405         struct lbs_adapter *adapter = priv->adapter;
 406
 407         lbs_deb_enter(LBS_DEB_NET);
 408
 409         priv->open = 1;
 410
 411         if (adapter->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 (adapter->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->adapter->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
 519 static int lbs_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 520 {
 521         int ret = 0;
 522         struct lbs_private *priv = dev->priv;
 523
 524         lbs_deb_enter(LBS_DEB_TX);
 525
 526         if (priv->dnld_sent || priv->adapter->TxLockFlag) {
 527                 priv->stats.tx_dropped++;
 528                 goto done;
 529         }
 530
 531         netif_stop_queue(priv->dev);
 532         if (priv->mesh_dev)
 533                 netif_stop_queue(priv->mesh_dev);
 534
 535         if (lbs_process_tx(priv, skb) == 0)
 536                 dev->trans_start = jiffies;
 537 done:
 538         lbs_deb_leave_args(LBS_DEB_TX, "ret %d", ret);
 539         return ret;
 540 }
 541
 542 /**
 543  * @brief Mark mesh packets and handover them to lbs_hard_start_xmit
 544  *
 545  */
 546 static int lbs_mesh_pre_start_xmit(struct sk_buff *skb,
 547                 struct net_device *dev)
 548 {
 549         struct lbs_private *priv = dev->priv;
 550         int ret;
 551
 552         lbs_deb_enter(LBS_DEB_MESH);
 553         if (priv->adapter->monitormode != LBS_MONITOR_OFF) {
 554                 netif_stop_queue(dev);
 555                 return -EOPNOTSUPP;
 556         }
 557
 558         SET_MESH_FRAME(skb);
 559
 560         ret = lbs_hard_start_xmit(skb, priv->mesh_dev);
 561         lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
 562         return ret;
 563 }
 564
 565 /**
 566  * @brief Mark non-mesh packets and handover them to lbs_hard_start_xmit
 567  *
 568  */
 569 static int lbs_pre_start_xmit(struct sk_buff *skb, struct net_device *dev)
 570 {
 571         struct lbs_private *priv = dev->priv;
 572         int ret;
 573
 574         lbs_deb_enter(LBS_DEB_TX);
 575
 576         if (priv->adapter->monitormode != LBS_MONITOR_OFF) {
 577                 netif_stop_queue(dev);
 578                 return -EOPNOTSUPP;
 579         }
 580
 581         UNSET_MESH_FRAME(skb);
 582
 583         ret = lbs_hard_start_xmit(skb, dev);
 584         lbs_deb_leave_args(LBS_DEB_TX, "ret %d", ret);
 585         return ret;
 586 }
 587
 588 static void lbs_tx_timeout(struct net_device *dev)
 589 {
 590         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 591
 592         lbs_deb_enter(LBS_DEB_TX);
 593
 594         lbs_pr_err("tx watch dog timeout\n");
 595
 596         priv->dnld_sent = DNLD_RES_RECEIVED;
 597         dev->trans_start = jiffies;
 598
 599         if (priv->adapter->currenttxskb) {
 600                 if (priv->adapter->monitormode != LBS_MONITOR_OFF) {
 601                         /* If we are here, we have not received feedback from
 602                            the previous packet.  Assume TX_FAIL and move on. */
 603                         priv->adapter->eventcause = 0x01000000;
 604                         lbs_send_tx_feedback(priv);
 605                 } else
 606                         wake_up_interruptible(&priv->waitq);
 607         } else if (dev == priv->dev) {
 608                 if (priv->adapter->connect_status == LBS_CONNECTED)
 609                         netif_wake_queue(priv->dev);
 610
 611         } else if (dev == priv->mesh_dev) {
 612                 if (priv->adapter->mesh_connect_status == LBS_CONNECTED)
 613                         netif_wake_queue(priv->mesh_dev);
 614         }
 615
 616         lbs_deb_leave(LBS_DEB_TX);
 617 }
 618
 619 /**
 620  *  @brief This function returns the network statistics
 621  *
 622  *  @param dev     A pointer to struct lbs_private structure
 623  *  @return        A pointer to net_device_stats structure
 624  */
 625 static struct net_device_stats *lbs_get_stats(struct net_device *dev)
 626 {
 627         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 628
 629         return &priv->stats;
 630 }
 631
 632 static int lbs_set_mac_address(struct net_device *dev, void *addr)
 633 {
 634         int ret = 0;
 635         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 636         struct lbs_adapter *adapter = priv->adapter;
 637         struct sockaddr *phwaddr = addr;
 638
 639         lbs_deb_enter(LBS_DEB_NET);
 640
 641         /* In case it was called from the mesh device */
 642         dev = priv->dev ;
 643
 644         memset(adapter->current_addr, 0, ETH_ALEN);
 645
 646         /* dev->dev_addr is 8 bytes */
 647         lbs_deb_hex(LBS_DEB_NET, "dev->dev_addr", dev->dev_addr, ETH_ALEN);
 648
 649         lbs_deb_hex(LBS_DEB_NET, "addr", phwaddr->sa_data, ETH_ALEN);
 650         memcpy(adapter->current_addr, phwaddr->sa_data, ETH_ALEN);
 651
 652         ret = lbs_prepare_and_send_command(priv, CMD_802_11_MAC_ADDRESS,
 653                                     CMD_ACT_SET,
 654                                     CMD_OPTION_WAITFORRSP, 0, NULL);
 655
 656         if (ret) {
 657                 lbs_deb_net("set MAC address failed\n");
 658                 ret = -1;
 659                 goto done;
 660         }
 661
 662         lbs_deb_hex(LBS_DEB_NET, "adapter->macaddr", adapter->current_addr, ETH_ALEN);
 663         memcpy(dev->dev_addr, adapter->current_addr, ETH_ALEN);
 664         if (priv->mesh_dev)
 665                 memcpy(priv->mesh_dev->dev_addr, adapter->current_addr, ETH_ALEN);
 666
 667 done:
 668         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 669         return ret;
 670 }
 671
 672 static int lbs_copy_multicast_address(struct lbs_adapter *adapter,
 673                                      struct net_device *dev)
 674 {
 675         int i = 0;
 676         struct dev_mc_list *mcptr = dev->mc_list;
 677
 678         for (i = 0; i < dev->mc_count; i++) {
 679                 memcpy(&adapter->multicastlist[i], mcptr->dmi_addr, ETH_ALEN);
 680                 mcptr = mcptr->next;
 681         }
 682
 683         return i;
 684
 685 }
 686
 687 static void lbs_set_multicast_list(struct net_device *dev)
 688 {
 689         struct lbs_private *priv = dev->priv;
 690         struct lbs_adapter *adapter = priv->adapter;
 691         int oldpacketfilter;
 692         DECLARE_MAC_BUF(mac);
 693
 694         lbs_deb_enter(LBS_DEB_NET);
 695
 696         oldpacketfilter = adapter->currentpacketfilter;
 697
 698         if (dev->flags & IFF_PROMISC) {
 699                 lbs_deb_net("enable promiscuous mode\n");
 700                 adapter->currentpacketfilter |=
 701                     CMD_ACT_MAC_PROMISCUOUS_ENABLE;
 702                 adapter->currentpacketfilter &=
 703                     ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
 704                       CMD_ACT_MAC_MULTICAST_ENABLE);
 705         } else {
 706                 /* Multicast */
 707                 adapter->currentpacketfilter &=
 708                     ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
 709
 710                 if (dev->flags & IFF_ALLMULTI || dev->mc_count >
 711                     MRVDRV_MAX_MULTICAST_LIST_SIZE) {
 712                         lbs_deb_net( "enabling all multicast\n");
 713                         adapter->currentpacketfilter |=
 714                             CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
 715                         adapter->currentpacketfilter &=
 716                             ~CMD_ACT_MAC_MULTICAST_ENABLE;
 717                 } else {
 718                         adapter->currentpacketfilter &=
 719                             ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
 720
 721                         if (!dev->mc_count) {
 722                                 lbs_deb_net("no multicast addresses, "
 723                                        "disabling multicast\n");
 724                                 adapter->currentpacketfilter &=
 725                                     ~CMD_ACT_MAC_MULTICAST_ENABLE;
 726                         } else {
 727                                 int i;
 728
 729                                 adapter->currentpacketfilter |=
 730                                     CMD_ACT_MAC_MULTICAST_ENABLE;
 731
 732                                 adapter->nr_of_multicastmacaddr =
 733                                     lbs_copy_multicast_address(adapter, dev);
 734
 735                                 lbs_deb_net("multicast addresses: %d\n",
 736                                        dev->mc_count);
 737
 738                                 for (i = 0; i < dev->mc_count; i++) {
 739                                         lbs_deb_net("Multicast address %d:%s\n",
 740                                                i, print_mac(mac,
 741                                                adapter->multicastlist[i]));
 742                                 }
 743                                 /* send multicast addresses to firmware */
 744                                 lbs_prepare_and_send_command(priv,
 745                                                       CMD_MAC_MULTICAST_ADR,
 746                                                       CMD_ACT_SET, 0, 0,
 747                                                       NULL);
 748                         }
 749                 }
 750         }
 751
 752         if (adapter->currentpacketfilter != oldpacketfilter) {
 753                 lbs_set_mac_packet_filter(priv);
 754         }
 755
 756         lbs_deb_leave(LBS_DEB_NET);
 757 }
 758
 759 /**
 760  *  @brief This function handles the major jobs in the LBS driver.
 761  *  It handles all events generated by firmware, RX data received
 762  *  from firmware and TX data sent from kernel.
 763  *
 764  *  @param data    A pointer to lbs_thread structure
 765  *  @return        0
 766  */
 767 static int lbs_thread(void *data)
 768 {
 769         struct net_device *dev = data;
 770         struct lbs_private *priv = dev->priv;
 771         struct lbs_adapter *adapter = priv->adapter;
 772         wait_queue_t wait;
 773         u8 ireg = 0;
 774
 775         lbs_deb_enter(LBS_DEB_THREAD);
 776
 777         init_waitqueue_entry(&wait, current);
 778
 779         set_freezable();
 780         for (;;) {
 781                 lbs_deb_thread( "main-thread 111: intcounter=%d "
 782                        "currenttxskb=%p dnld_sent=%d\n",
 783                        adapter->intcounter,
 784                        adapter->currenttxskb, priv->dnld_sent);
 785
 786                 add_wait_queue(&priv->waitq, &wait);
 787                 set_current_state(TASK_INTERRUPTIBLE);
 788                 spin_lock_irq(&adapter->driver_lock);
 789                 if ((adapter->psstate == PS_STATE_SLEEP) ||
 790                     (!adapter->intcounter
 791                      && (priv->dnld_sent || adapter->cur_cmd ||
 792                          list_empty(&adapter->cmdpendingq)))) {
 793                         lbs_deb_thread(
 794                                "main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
 795                                adapter->connect_status, adapter->intcounter,
 796                                adapter->psmode, adapter->psstate);
 797                         spin_unlock_irq(&adapter->driver_lock);
 798                         schedule();
 799                 } else
 800                         spin_unlock_irq(&adapter->driver_lock);
 801
 802                 lbs_deb_thread(
 803                        "main-thread 222 (waking up): intcounter=%d currenttxskb=%p "
 804                        "dnld_sent=%d\n", adapter->intcounter,
 805                        adapter->currenttxskb, priv->dnld_sent);
 806
 807                 set_current_state(TASK_RUNNING);
 808                 remove_wait_queue(&priv->waitq, &wait);
 809                 try_to_freeze();
 810
 811                 lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p "
 812                        "dnld_sent=%d\n",
 813                        adapter->intcounter,
 814                        adapter->currenttxskb, priv->dnld_sent);
 815
 816                 if (kthread_should_stop()
 817                     || adapter->surpriseremoved) {
 818                         lbs_deb_thread(
 819                                "main-thread: break from main thread: surpriseremoved=0x%x\n",
 820                                adapter->surpriseremoved);
 821                         break;
 822                 }
 823
 824
 825                 spin_lock_irq(&adapter->driver_lock);
 826                 if (adapter->intcounter) {
 827                         u8 int_status;
 828                         adapter->intcounter = 0;
 829                         int_status = priv->hw_get_int_status(priv, &ireg);
 830
 831                         if (int_status) {
 832                                 lbs_deb_thread(
 833                                        "main-thread: reading HOST_INT_STATUS_REG failed\n");
 834                                 spin_unlock_irq(&adapter->driver_lock);
 835                                 continue;
 836                         }
 837                         adapter->hisregcpy |= ireg;
 838                 }
 839
 840                 lbs_deb_thread("main-thread 444: intcounter=%d currenttxskb=%p "
 841                        "dnld_sent=%d\n",
 842                        adapter->intcounter,
 843                        adapter->currenttxskb, priv->dnld_sent);
 844
 845                 /* command response? */
 846                 if (adapter->hisregcpy & MRVDRV_CMD_UPLD_RDY) {
 847                         lbs_deb_thread("main-thread: cmd response ready\n");
 848
 849                         adapter->hisregcpy &= ~MRVDRV_CMD_UPLD_RDY;
 850                         spin_unlock_irq(&adapter->driver_lock);
 851                         lbs_process_rx_command(priv);
 852                         spin_lock_irq(&adapter->driver_lock);
 853                 }
 854
 855                 /* Any Card Event */
 856                 if (adapter->hisregcpy & MRVDRV_CARDEVENT) {
 857                         lbs_deb_thread("main-thread: Card Event Activity\n");
 858
 859                         adapter->hisregcpy &= ~MRVDRV_CARDEVENT;
 860
 861                         if (priv->hw_read_event_cause(priv)) {
 862                                 lbs_pr_alert(
 863                                        "main-thread: hw_read_event_cause failed\n");
 864                                 spin_unlock_irq(&adapter->driver_lock);
 865                                 continue;
 866                         }
 867                         spin_unlock_irq(&adapter->driver_lock);
 868                         lbs_process_event(priv);
 869                 } else
 870                         spin_unlock_irq(&adapter->driver_lock);
 871
 872                 /* Check if we need to confirm Sleep Request received previously */
 873                 if (adapter->psstate == PS_STATE_PRE_SLEEP) {
 874                         if (!priv->dnld_sent && !adapter->cur_cmd) {
 875                                 if (adapter->connect_status ==
 876                                     LBS_CONNECTED) {
 877                                         lbs_deb_thread(
 878                                                "main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p "
 879                                                "dnld_sent=%d cur_cmd=%p, confirm now\n",
 880                                                adapter->intcounter,
 881                                                adapter->currenttxskb,
 882                                                priv->dnld_sent,
 883                                                adapter->cur_cmd);
 884
 885                                         lbs_ps_confirm_sleep(priv,
 886                                                        (u16) adapter->psmode);
 887                                 } else {
 888                                         /* workaround for firmware sending
 889                                          * deauth/linkloss event immediately
 890                                          * after sleep request, remove this
 891                                          * after firmware fixes it
 892                                          */
 893                                         adapter->psstate = PS_STATE_AWAKE;
 894                                         lbs_pr_alert(
 895                                                "main-thread: ignore PS_SleepConfirm in non-connected state\n");
 896                                 }
 897                         }
 898                 }
 899
 900                 /* The PS state is changed during processing of Sleep Request
 901                  * event above
 902                  */
 903                 if ((priv->adapter->psstate == PS_STATE_SLEEP) ||
 904                     (priv->adapter->psstate == PS_STATE_PRE_SLEEP))
 905                         continue;
 906
 907                 /* Execute the next command */
 908                 if (!priv->dnld_sent && !priv->adapter->cur_cmd)
 909                         lbs_execute_next_command(priv);
 910
 911                 /* Wake-up command waiters which can't sleep in
 912                  * lbs_prepare_and_send_command
 913                  */
 914                 if (!adapter->nr_cmd_pending)
 915                         wake_up_all(&adapter->cmd_pending);
 916
 917                 lbs_tx_runqueue(priv);
 918         }
 919
 920         del_timer(&adapter->command_timer);
 921         adapter->nr_cmd_pending = 0;
 922         wake_up_all(&adapter->cmd_pending);
 923
 924         lbs_deb_leave(LBS_DEB_THREAD);
 925         return 0;
 926 }
 927
 928 /**
 929  *  @brief This function downloads firmware image, gets
 930  *  HW spec from firmware and set basic parameters to
 931  *  firmware.
 932  *
 933  *  @param priv    A pointer to struct lbs_private structure
 934  *  @return        0 or -1
 935  */
 936 static int lbs_setup_firmware(struct lbs_private *priv)
 937 {
 938         int ret = -1;
 939         struct lbs_adapter *adapter = priv->adapter;
 940         struct cmd_ds_mesh_access mesh_access;
 941
 942         lbs_deb_enter(LBS_DEB_FW);
 943
 944         /*
 945          * Read MAC address from HW
 946          */
 947         memset(adapter->current_addr, 0xff, ETH_ALEN);
 948
 949         ret = lbs_prepare_and_send_command(priv, CMD_GET_HW_SPEC,
 950                                     0, CMD_OPTION_WAITFORRSP, 0, NULL);
 951
 952         if (ret) {
 953                 ret = -1;
 954                 goto done;
 955         }
 956
 957         lbs_set_mac_packet_filter(priv);
 958
 959         /* Get the supported Data rates */
 960         ret = lbs_prepare_and_send_command(priv, CMD_802_11_DATA_RATE,
 961                                     CMD_ACT_GET_TX_RATE,
 962                                     CMD_OPTION_WAITFORRSP, 0, NULL);
 963
 964         if (ret) {
 965                 ret = -1;
 966                 goto done;
 967         }
 968
 969         /* Disable mesh autostart */
 970         if (priv->mesh_dev) {
 971                 memset(&mesh_access, 0, sizeof(mesh_access));
 972                 mesh_access.data[0] = cpu_to_le32(0);
 973                 ret = lbs_prepare_and_send_command(priv,
 974                                 CMD_MESH_ACCESS,
 975                                 CMD_ACT_MESH_SET_AUTOSTART_ENABLED,
 976                                 CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
 977                 if (ret) {
 978                         ret = -1;
 979                         goto done;
 980                 }
 981                 priv->mesh_autostart_enabled = 0;
 982         }
 983
 984        /* Set the boot2 version in firmware */
 985        ret = lbs_prepare_and_send_command(priv, CMD_SET_BOOT2_VER,
 986                                    0, CMD_OPTION_WAITFORRSP, 0, NULL);
 987
 988         ret = 0;
 989 done:
 990         lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
 991         return ret;
 992 }
 993
 994 /**
 995  *  This function handles the timeout of command sending.
 996  *  It will re-send the same command again.
 997  */
 998 static void command_timer_fn(unsigned long data)
 999 {
1000         struct lbs_private *priv = (struct lbs_private *)data;
1001         struct lbs_adapter *adapter = priv->adapter;
1002         struct cmd_ctrl_node *ptempnode;
1003         struct cmd_ds_command *cmd;
1004         unsigned long flags;
1005
1006         ptempnode = adapter->cur_cmd;
1007         if (ptempnode == NULL) {
1008                 lbs_deb_fw("ptempnode empty\n");
1009                 return;
1010         }
1011
1012         cmd = (struct cmd_ds_command *)ptempnode->bufvirtualaddr;
1013         if (!cmd) {
1014                 lbs_deb_fw("cmd is NULL\n");
1015                 return;
1016         }
1017
1018         lbs_deb_fw("command_timer_fn fired, cmd %x\n", cmd->command);
1019
1020         if (!adapter->fw_ready)
1021                 return;
1022
1023         spin_lock_irqsave(&adapter->driver_lock, flags);
1024         adapter->cur_cmd = NULL;
1025         spin_unlock_irqrestore(&adapter->driver_lock, flags);
1026
1027         lbs_deb_fw("re-sending same command because of timeout\n");
1028         lbs_queue_cmd(adapter, ptempnode, 0);
1029
1030         wake_up_interruptible(&priv->waitq);
1031
1032         return;
1033 }
1034
1035 static int lbs_init_adapter(struct lbs_private *priv)
1036 {
1037         struct lbs_adapter *adapter = priv->adapter;
1038         size_t bufsize;
1039         int i, ret = 0;
1040
1041         /* Allocate buffer to store the BSSID list */
1042         bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
1043         adapter->networks = kzalloc(bufsize, GFP_KERNEL);
1044         if (!adapter->networks) {
1045                 lbs_pr_err("Out of memory allocating beacons\n");
1046                 ret = -1;
1047                 goto out;
1048         }
1049
1050         /* Initialize scan result lists */
1051         INIT_LIST_HEAD(&adapter->network_free_list);
1052         INIT_LIST_HEAD(&adapter->network_list);
1053         for (i = 0; i < MAX_NETWORK_COUNT; i++) {
1054                 list_add_tail(&adapter->networks[i].list,
1055                               &adapter->network_free_list);
1056         }
1057
1058         adapter->lbs_ps_confirm_sleep.seqnum = cpu_to_le16(++adapter->seqnum);
1059         adapter->lbs_ps_confirm_sleep.command =
1060             cpu_to_le16(CMD_802_11_PS_MODE);
1061         adapter->lbs_ps_confirm_sleep.size =
1062             cpu_to_le16(sizeof(struct PS_CMD_ConfirmSleep));
1063         adapter->lbs_ps_confirm_sleep.action =
1064             cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
1065
1066         memset(adapter->current_addr, 0xff, ETH_ALEN);
1067
1068         adapter->connect_status = LBS_DISCONNECTED;
1069         adapter->mesh_connect_status = LBS_DISCONNECTED;
1070         adapter->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
1071         adapter->mode = IW_MODE_INFRA;
1072         adapter->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;
1073         adapter->currentpacketfilter = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
1074         adapter->radioon = RADIO_ON;
1075         adapter->auto_rate = 1;
1076         adapter->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
1077         adapter->psmode = LBS802_11POWERMODECAM;
1078         adapter->psstate = PS_STATE_FULL_POWER;
1079
1080         mutex_init(&adapter->lock);
1081
1082         memset(&adapter->tx_queue_ps, 0, NR_TX_QUEUE*sizeof(struct sk_buff*));
1083         adapter->tx_queue_idx = 0;
1084         spin_lock_init(&adapter->txqueue_lock);
1085
1086         setup_timer(&adapter->command_timer, command_timer_fn,
1087                     (unsigned long)priv);
1088
1089         INIT_LIST_HEAD(&adapter->cmdfreeq);
1090         INIT_LIST_HEAD(&adapter->cmdpendingq);
1091
1092         spin_lock_init(&adapter->driver_lock);
1093         init_waitqueue_head(&adapter->cmd_pending);
1094         adapter->nr_cmd_pending = 0;
1095
1096         /* Allocate the command buffers */
1097         if (lbs_allocate_cmd_buffer(priv)) {
1098                 lbs_pr_err("Out of memory allocating command buffers\n");
1099                 ret = -1;
1100         }
1101
1102 out:
1103         return ret;
1104 }
1105
1106 static void lbs_free_adapter(struct lbs_private *priv)
1107 {
1108         struct lbs_adapter *adapter = priv->adapter;
1109
1110         if (!adapter) {
1111                 lbs_deb_fw("why double free adapter?\n");
1112                 return;
1113         }
1114
1115         lbs_deb_fw("free command buffer\n");
1116         lbs_free_cmd_buffer(priv);
1117
1118         lbs_deb_fw("free command_timer\n");
1119         del_timer(&adapter->command_timer);
1120
1121         lbs_deb_fw("free scan results table\n");
1122         kfree(adapter->networks);
1123         adapter->networks = NULL;
1124
1125         /* Free the adapter object itself */
1126         lbs_deb_fw("free adapter\n");
1127         kfree(adapter);
1128         priv->adapter = NULL;
1129 }
1130
1131 /**
1132  * @brief This function adds the card. it will probe the
1133  * card, allocate the lbs_priv and initialize the device.
1134  *
1135  *  @param card    A pointer to card
1136  *  @return        A pointer to struct lbs_private structure
1137  */
1138 struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
1139 {
1140         struct net_device *dev = NULL;
1141         struct lbs_private *priv = NULL;
1142
1143         lbs_deb_enter(LBS_DEB_NET);
1144
1145         /* Allocate an Ethernet device and register it */
1146         dev = alloc_etherdev(sizeof(struct lbs_private));
1147         if (!dev) {
1148                 lbs_pr_err("init ethX device failed\n");
1149                 goto done;
1150         }
1151         priv = dev->priv;
1152
1153         /* allocate buffer for struct lbs_adapter */
1154         priv->adapter = kzalloc(sizeof(struct lbs_adapter), GFP_KERNEL);
1155         if (!priv->adapter) {
1156                 lbs_pr_err("allocate buffer for struct lbs_adapter failed\n");
1157                 goto err_kzalloc;
1158         }
1159
1160         if (lbs_init_adapter(priv)) {
1161                 lbs_pr_err("failed to initialize adapter structure.\n");
1162                 goto err_init_adapter;
1163         }
1164
1165         priv->dev = dev;
1166         priv->card = card;
1167         priv->mesh_open = 0;
1168         priv->infra_open = 0;
1169         priv->hotplug_device = dmdev;
1170
1171         /* Setup the OS Interface to our functions */
1172         dev->open = lbs_open;
1173         dev->hard_start_xmit = lbs_pre_start_xmit;
1174         dev->stop = lbs_close;
1175         dev->set_mac_address = lbs_set_mac_address;
1176         dev->tx_timeout = lbs_tx_timeout;
1177         dev->get_stats = lbs_get_stats;
1178         dev->watchdog_timeo = 5 * HZ;
1179         dev->ethtool_ops = &lbs_ethtool_ops;
1180 #ifdef  WIRELESS_EXT
1181         dev->wireless_handlers = (struct iw_handler_def *)&lbs_handler_def;
1182 #endif
1183         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1184         dev->set_multicast_list = lbs_set_multicast_list;
1185
1186         SET_NETDEV_DEV(dev, dmdev);
1187
1188         priv->rtap_net_dev = NULL;
1189         if (device_create_file(dmdev, &dev_attr_lbs_rtap))
1190                 goto err_init_adapter;
1191
1192         lbs_deb_thread("Starting main thread...\n");
1193         init_waitqueue_head(&priv->waitq);
1194         priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
1195         if (IS_ERR(priv->main_thread)) {
1196                 lbs_deb_thread("Error creating main thread.\n");
1197                 goto err_kthread_run;
1198         }
1199
1200         priv->work_thread = create_singlethread_workqueue("lbs_worker");
1201         INIT_DELAYED_WORK(&priv->assoc_work, lbs_association_worker);
1202         INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
1203         INIT_WORK(&priv->sync_channel, lbs_sync_channel);
1204
1205         goto done;
1206
1207 err_kthread_run:
1208         device_remove_file(dmdev, &dev_attr_lbs_rtap);
1209
1210 err_init_adapter:
1211         lbs_free_adapter(priv);
1212
1213 err_kzalloc:
1214         free_netdev(dev);
1215         priv = NULL;
1216
1217 done:
1218         lbs_deb_leave_args(LBS_DEB_NET, "priv %p", priv);
1219         return priv;
1220 }
1221 EXPORT_SYMBOL_GPL(lbs_add_card);
1222
1223
1224 int lbs_remove_card(struct lbs_private *priv)
1225 {
1226         struct lbs_adapter *adapter = priv->adapter;
1227         struct net_device *dev = priv->dev;
1228         union iwreq_data wrqu;
1229
1230         lbs_deb_enter(LBS_DEB_MAIN);
1231
1232         lbs_remove_rtap(priv);
1233
1234         dev = priv->dev;
1235         device_remove_file(priv->hotplug_device, &dev_attr_lbs_rtap);
1236
1237         cancel_delayed_work(&priv->scan_work);
1238         cancel_delayed_work(&priv->assoc_work);
1239         destroy_workqueue(priv->work_thread);
1240
1241         if (adapter->psmode == LBS802_11POWERMODEMAX_PSP) {
1242                 adapter->psmode = LBS802_11POWERMODECAM;
1243                 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1244         }
1245
1246         memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1247         wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1248         wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1249
1250         /* Stop the thread servicing the interrupts */
1251         adapter->surpriseremoved = 1;
1252         kthread_stop(priv->main_thread);
1253
1254         lbs_free_adapter(priv);
1255
1256         priv->dev = NULL;
1257         free_netdev(dev);
1258
1259         lbs_deb_leave(LBS_DEB_MAIN);
1260         return 0;
1261 }
1262 EXPORT_SYMBOL_GPL(lbs_remove_card);
1263
1264
1265 int lbs_start_card(struct lbs_private *priv)
1266 {
1267         struct net_device *dev = priv->dev;
1268         int ret = -1;
1269
1270         lbs_deb_enter(LBS_DEB_MAIN);
1271
1272         /* poke the firmware */
1273         ret = lbs_setup_firmware(priv);
1274         if (ret)
1275                 goto done;
1276
1277         /* init 802.11d */
1278         lbs_init_11d(priv);
1279
1280         if (register_netdev(dev)) {
1281                 lbs_pr_err("cannot register ethX device\n");
1282                 goto done;
1283         }
1284
1285         lbs_debugfs_init_one(priv, dev);
1286
1287         lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
1288
1289         ret = 0;
1290
1291 done:
1292         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1293         return ret;
1294 }
1295 EXPORT_SYMBOL_GPL(lbs_start_card);
1296
1297
1298 int lbs_stop_card(struct lbs_private *priv)
1299 {
1300         struct net_device *dev = priv->dev;
1301         int ret = -1;
1302         struct cmd_ctrl_node *cmdnode;
1303         unsigned long flags;
1304
1305         lbs_deb_enter(LBS_DEB_MAIN);
1306
1307         netif_stop_queue(priv->dev);
1308         netif_carrier_off(priv->dev);
1309
1310         lbs_debugfs_remove_one(priv);
1311
1312         /* Flush pending command nodes */
1313         spin_lock_irqsave(&priv->adapter->driver_lock, flags);
1314         list_for_each_entry(cmdnode, &priv->adapter->cmdpendingq, list) {
1315                 cmdnode->cmdwaitqwoken = 1;
1316                 wake_up_interruptible(&cmdnode->cmdwait_q);
1317         }
1318         spin_unlock_irqrestore(&priv->adapter->driver_lock, flags);
1319
1320         unregister_netdev(dev);
1321
1322         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1323         return ret;
1324 }
1325 EXPORT_SYMBOL_GPL(lbs_stop_card);
1326
1327
1328 /**
1329  * @brief This function adds mshX interface
1330  *
1331  *  @param priv    A pointer to the struct lbs_private structure
1332  *  @return        0 if successful, -X otherwise
1333  */
1334 int lbs_add_mesh(struct lbs_private *priv, struct device *dev)
1335 {
1336         struct net_device *mesh_dev = NULL;
1337         int ret = 0;
1338
1339         lbs_deb_enter(LBS_DEB_MESH);
1340
1341         /* Allocate a virtual mesh device */
1342         if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
1343                 lbs_deb_mesh("init mshX device failed\n");
1344                 ret = -ENOMEM;
1345                 goto done;
1346         }
1347         mesh_dev->priv = priv;
1348         priv->mesh_dev = mesh_dev;
1349
1350         mesh_dev->open = lbs_mesh_open;
1351         mesh_dev->hard_start_xmit = lbs_mesh_pre_start_xmit;
1352         mesh_dev->stop = lbs_mesh_close;
1353         mesh_dev->get_stats = lbs_get_stats;
1354         mesh_dev->set_mac_address = lbs_set_mac_address;
1355         mesh_dev->ethtool_ops = &lbs_ethtool_ops;
1356         memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
1357                         sizeof(priv->dev->dev_addr));
1358
1359         SET_NETDEV_DEV(priv->mesh_dev, dev);
1360
1361 #ifdef  WIRELESS_EXT
1362         mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
1363 #endif
1364         /* Register virtual mesh interface */
1365         ret = register_netdev(mesh_dev);
1366         if (ret) {
1367                 lbs_pr_err("cannot register mshX virtual interface\n");
1368                 goto err_free;
1369         }
1370
1371         ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1372         if (ret)
1373                 goto err_unregister;
1374
1375         /* Everything successful */
1376         ret = 0;
1377         goto done;
1378
1379 err_unregister:
1380         unregister_netdev(mesh_dev);
1381
1382 err_free:
1383         free_netdev(mesh_dev);
1384
1385 done:
1386         lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1387         return ret;
1388 }
1389 EXPORT_SYMBOL_GPL(lbs_add_mesh);
1390
1391
1392 void lbs_remove_mesh(struct lbs_private *priv)
1393 {
1394         struct net_device *mesh_dev;
1395
1396         lbs_deb_enter(LBS_DEB_MAIN);
1397
1398         if (!priv)
1399                 goto out;
1400
1401         mesh_dev = priv->mesh_dev;
1402
1403         netif_stop_queue(mesh_dev);
1404         netif_carrier_off(priv->mesh_dev);
1405
1406         sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1407         unregister_netdev(mesh_dev);
1408
1409         priv->mesh_dev = NULL ;
1410         free_netdev(mesh_dev);
1411
1412 out:
1413         lbs_deb_leave(LBS_DEB_MAIN);
1414 }
1415 EXPORT_SYMBOL_GPL(lbs_remove_mesh);
1416
1417 /**
1418  *  @brief This function finds the CFP in
1419  *  region_cfp_table based on region and band parameter.
1420  *
1421  *  @param region  The region code
1422  *  @param band    The band
1423  *  @param cfp_no  A pointer to CFP number
1424  *  @return        A pointer to CFP
1425  */
1426 struct chan_freq_power *lbs_get_region_cfp_table(u8 region, u8 band, int *cfp_no)
1427 {
1428         int i, end;
1429
1430         lbs_deb_enter(LBS_DEB_MAIN);
1431
1432         end = ARRAY_SIZE(region_cfp_table);
1433
1434         for (i = 0; i < end ; i++) {
1435                 lbs_deb_main("region_cfp_table[i].region=%d\n",
1436                         region_cfp_table[i].region);
1437                 if (region_cfp_table[i].region == region) {
1438                         *cfp_no = region_cfp_table[i].cfp_no_BG;
1439                         lbs_deb_leave(LBS_DEB_MAIN);
1440                         return region_cfp_table[i].cfp_BG;
1441                 }
1442         }
1443
1444         lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1445         return NULL;
1446 }
1447
1448 int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band)
1449 {
1450         struct lbs_adapter *adapter = priv->adapter;
1451         int ret = 0;
1452         int i = 0;
1453
1454         struct chan_freq_power *cfp;
1455         int cfp_no;
1456
1457         lbs_deb_enter(LBS_DEB_MAIN);
1458
1459         memset(adapter->region_channel, 0, sizeof(adapter->region_channel));
1460
1461         {
1462                 cfp = lbs_get_region_cfp_table(region, band, &cfp_no);
1463                 if (cfp != NULL) {
1464                         adapter->region_channel[i].nrcfp = cfp_no;
1465                         adapter->region_channel[i].CFP = cfp;
1466                 } else {
1467                         lbs_deb_main("wrong region code %#x in band B/G\n",
1468                                region);
1469                         ret = -1;
1470                         goto out;
1471                 }
1472                 adapter->region_channel[i].valid = 1;
1473                 adapter->region_channel[i].region = region;
1474                 adapter->region_channel[i].band = band;
1475                 i++;
1476         }
1477 out:
1478         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1479         return ret;
1480 }
1481
1482 /**
1483  *  @brief This function handles the interrupt. it will change PS
1484  *  state if applicable. it will wake up main_thread to handle
1485  *  the interrupt event as well.
1486  *
1487  *  @param dev     A pointer to net_device structure
1488  *  @return        n/a
1489  */
1490 void lbs_interrupt(struct net_device *dev)
1491 {
1492         struct lbs_private *priv = dev->priv;
1493
1494         lbs_deb_enter(LBS_DEB_THREAD);
1495
1496         lbs_deb_thread("lbs_interrupt: intcounter=%d\n",
1497                priv->adapter->intcounter);
1498
1499         priv->adapter->intcounter++;
1500
1501         if (priv->adapter->psstate == PS_STATE_SLEEP) {
1502                 priv->adapter->psstate = PS_STATE_AWAKE;
1503                 netif_wake_queue(dev);
1504                 if (priv->mesh_dev)
1505                         netif_wake_queue(priv->mesh_dev);
1506         }
1507
1508         wake_up_interruptible(&priv->waitq);
1509
1510         lbs_deb_leave(LBS_DEB_THREAD);
1511 }
1512 EXPORT_SYMBOL_GPL(lbs_interrupt);
1513
1514 int lbs_reset_device(struct lbs_private *priv)
1515 {
1516         int ret;
1517
1518         lbs_deb_enter(LBS_DEB_MAIN);
1519         ret = lbs_prepare_and_send_command(priv, CMD_802_11_RESET,
1520                                     CMD_ACT_HALT, 0, 0, NULL);
1521         msleep_interruptible(10);
1522
1523         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1524         return ret;
1525 }
1526 EXPORT_SYMBOL_GPL(lbs_reset_device);
1527
1528 static int __init lbs_init_module(void)
1529 {
1530         lbs_deb_enter(LBS_DEB_MAIN);
1531         lbs_debugfs_init();
1532         lbs_deb_leave(LBS_DEB_MAIN);
1533         return 0;
1534 }
1535
1536 static void __exit lbs_exit_module(void)
1537 {
1538         lbs_deb_enter(LBS_DEB_MAIN);
1539
1540         lbs_debugfs_remove();
1541
1542         lbs_deb_leave(LBS_DEB_MAIN);
1543 }
1544
1545 /*
1546  * rtap interface support fuctions
1547  */
1548
1549 static int lbs_rtap_open(struct net_device *dev)
1550 {
1551         netif_carrier_off(dev);
1552         netif_stop_queue(dev);
1553         return 0;
1554 }
1555
1556 static int lbs_rtap_stop(struct net_device *dev)
1557 {
1558         return 0;
1559 }
1560
1561 static int lbs_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1562 {
1563         netif_stop_queue(dev);
1564         return -EOPNOTSUPP;
1565 }
1566
1567 static struct net_device_stats *lbs_rtap_get_stats(struct net_device *dev)
1568 {
1569         struct lbs_private *priv = dev->priv;
1570         return &priv->ieee->stats;
1571 }
1572
1573
1574 void lbs_remove_rtap(struct lbs_private *priv)
1575 {
1576         if (priv->rtap_net_dev == NULL)
1577                 return;
1578         unregister_netdev(priv->rtap_net_dev);
1579         free_ieee80211(priv->rtap_net_dev);
1580         priv->rtap_net_dev = NULL;
1581 }
1582
1583 int lbs_add_rtap(struct lbs_private *priv)
1584 {
1585         int rc = 0;
1586
1587         if (priv->rtap_net_dev)
1588                 return -EPERM;
1589
1590         priv->rtap_net_dev = alloc_ieee80211(0);
1591         if (priv->rtap_net_dev == NULL)
1592                 return -ENOMEM;
1593
1594
1595         priv->ieee = netdev_priv(priv->rtap_net_dev);
1596
1597         strcpy(priv->rtap_net_dev->name, "rtap%d");
1598
1599         priv->rtap_net_dev->type = ARPHRD_IEEE80211_RADIOTAP;
1600         priv->rtap_net_dev->open = lbs_rtap_open;
1601         priv->rtap_net_dev->stop = lbs_rtap_stop;
1602         priv->rtap_net_dev->get_stats = lbs_rtap_get_stats;
1603         priv->rtap_net_dev->hard_start_xmit = lbs_rtap_hard_start_xmit;
1604         priv->rtap_net_dev->set_multicast_list = lbs_set_multicast_list;
1605         priv->rtap_net_dev->priv = priv;
1606
1607         priv->ieee->iw_mode = IW_MODE_MONITOR;
1608
1609         rc = register_netdev(priv->rtap_net_dev);
1610         if (rc) {
1611                 free_ieee80211(priv->rtap_net_dev);
1612                 priv->rtap_net_dev = NULL;
1613                 return rc;
1614         }
1615
1616         return 0;
1617 }
1618
1619
1620 module_init(lbs_init_module);
1621 module_exit(lbs_exit_module);
1622
1623 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1624 MODULE_AUTHOR("Marvell International Ltd.");
1625 MODULE_LICENSE("GPL");