Pileus Git - ~andy/linux/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 = to_net_dev(dev)->priv;
 260         struct lbs_adapter *adapter = priv->adapter;
 261         return snprintf(buf, 5, "0x%X\n", adapter->monitormode);
 262 }
 263
 264 /**
 265  *  Set function for sysfs attribute rtap
 266  */
 267 static ssize_t lbs_rtap_set(struct device *dev,
 268                 struct device_attribute *attr, const char * buf, size_t count)
 269 {
 270         int monitor_mode;
 271         struct lbs_private *priv = to_net_dev(dev)->priv;
 272         struct lbs_adapter *adapter = priv->adapter;
 273
 274         sscanf(buf, "%x", &monitor_mode);
 275         if (monitor_mode != LBS_MONITOR_OFF) {
 276                 if(adapter->monitormode == monitor_mode)
 277                         return strlen(buf);
 278                 if (adapter->monitormode == LBS_MONITOR_OFF) {
 279                         if (adapter->mode == IW_MODE_INFRA)
 280                                 lbs_send_deauthentication(priv);
 281                         else if (adapter->mode == IW_MODE_ADHOC)
 282                                 lbs_stop_adhoc_network(priv);
 283                         lbs_add_rtap(priv);
 284                 }
 285                 adapter->monitormode = monitor_mode;
 286         }
 287
 288         else {
 289                 if (adapter->monitormode == LBS_MONITOR_OFF)
 290                         return strlen(buf);
 291                 adapter->monitormode = LBS_MONITOR_OFF;
 292                 lbs_remove_rtap(priv);
 293                 netif_wake_queue(priv->dev);
 294                 netif_wake_queue(priv->mesh_dev);
 295         }
 296
 297         lbs_prepare_and_send_command(priv,
 298                         CMD_802_11_MONITOR_MODE, CMD_ACT_SET,
 299                         CMD_OPTION_WAITFORRSP, 0, &adapter->monitormode);
 300         return strlen(buf);
 301 }
 302
 303 /**
 304  * lbs_rtap attribute to be exported per mshX interface
 305  * through sysfs (/sys/class/net/mshX/libertas-rtap)
 306  */
 307 static DEVICE_ATTR(lbs_rtap, 0644, lbs_rtap_get,
 308                 lbs_rtap_set );
 309
 310 /**
 311  * anycast_mask attribute to be exported per mshX interface
 312  * through sysfs (/sys/class/net/mshX/anycast_mask)
 313  */
 314 static DEVICE_ATTR(anycast_mask, 0644, lbs_anycast_get, lbs_anycast_set);
 315
 316 static ssize_t lbs_autostart_enabled_get(struct device *dev,
 317                 struct device_attribute *attr, char * buf)
 318 {
 319         struct cmd_ds_mesh_access mesh_access;
 320
 321         memset(&mesh_access, 0, sizeof(mesh_access));
 322         lbs_prepare_and_send_command(to_net_dev(dev)->priv,
 323                         CMD_MESH_ACCESS,
 324                         CMD_ACT_MESH_GET_AUTOSTART_ENABLED,
 325                         CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
 326
 327         return sprintf(buf, "%d\n", le32_to_cpu(mesh_access.data[0]));
 328 }
 329
 330 static ssize_t lbs_autostart_enabled_set(struct device *dev,
 331                 struct device_attribute *attr, const char * buf, size_t count)
 332 {
 333         struct cmd_ds_mesh_access mesh_access;
 334         uint32_t datum;
 335         struct lbs_private *priv = (to_net_dev(dev))->priv;
 336         int ret;
 337
 338         memset(&mesh_access, 0, sizeof(mesh_access));
 339         sscanf(buf, "%d", &datum);
 340         mesh_access.data[0] = cpu_to_le32(datum);
 341
 342         ret = lbs_prepare_and_send_command(priv,
 343                         CMD_MESH_ACCESS,
 344                         CMD_ACT_MESH_SET_AUTOSTART_ENABLED,
 345                         CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
 346         if (ret == 0)
 347                 priv->mesh_autostart_enabled = datum ? 1 : 0;
 348
 349         return strlen(buf);
 350 }
 351
 352 static DEVICE_ATTR(autostart_enabled, 0644,
 353                 lbs_autostart_enabled_get, lbs_autostart_enabled_set);
 354
 355 static struct attribute *lbs_mesh_sysfs_entries[] = {
 356         &dev_attr_anycast_mask.attr,
 357         &dev_attr_autostart_enabled.attr,
 358         NULL,
 359 };
 360
 361 static struct attribute_group lbs_mesh_attr_group = {
 362         .attrs = lbs_mesh_sysfs_entries,
 363 };
 364
 365 /**
 366  *  @brief Check if the device can be open and wait if necessary.
 367  *
 368  *  @param dev     A pointer to net_device structure
 369  *  @return        0
 370  *
 371  * For USB adapter, on some systems the device open handler will be
 372  * called before FW ready. Use the following flag check and wait
 373  * function to work around the issue.
 374  *
 375  */
 376 static int pre_open_check(struct net_device *dev)
 377 {
 378         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 379         struct lbs_adapter *adapter = priv->adapter;
 380         int i = 0;
 381
 382         while (!adapter->fw_ready && i < 20) {
 383                 i++;
 384                 msleep_interruptible(100);
 385         }
 386         if (!adapter->fw_ready) {
 387                 lbs_pr_err("firmware not ready\n");
 388                 return -1;
 389         }
 390
 391         return 0;
 392 }
 393
 394 /**
 395  *  @brief This function opens the device
 396  *
 397  *  @param dev     A pointer to net_device structure
 398  *  @return        0
 399  */
 400 static int lbs_dev_open(struct net_device *dev)
 401 {
 402         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 403         struct lbs_adapter *adapter = priv->adapter;
 404
 405         lbs_deb_enter(LBS_DEB_NET);
 406
 407         priv->open = 1;
 408
 409         if (adapter->connect_status == LBS_CONNECTED)
 410                 netif_carrier_on(priv->dev);
 411         else
 412                 netif_carrier_off(priv->dev);
 413
 414         if (priv->mesh_dev) {
 415                 if (adapter->mesh_connect_status == LBS_CONNECTED)
 416                         netif_carrier_on(priv->mesh_dev);
 417                 else
 418                         netif_carrier_off(priv->mesh_dev);
 419         }
 420
 421         lbs_deb_leave(LBS_DEB_NET);
 422         return 0;
 423 }
 424 /**
 425  *  @brief This function opens the mshX interface
 426  *
 427  *  @param dev     A pointer to net_device structure
 428  *  @return        0
 429  */
 430 static int lbs_mesh_open(struct net_device *dev)
 431 {
 432         struct lbs_private *priv = (struct lbs_private *) dev->priv ;
 433
 434         if (pre_open_check(dev) == -1)
 435                 return -1;
 436         priv->mesh_open = 1 ;
 437         netif_wake_queue(priv->mesh_dev);
 438
 439         priv->adapter->mesh_connect_status = LBS_CONNECTED;
 440
 441         netif_carrier_on(priv->mesh_dev);
 442         netif_wake_queue(priv->mesh_dev);
 443         if (priv->infra_open == 0)
 444                 return lbs_dev_open(priv->dev) ;
 445         return 0;
 446 }
 447
 448 /**
 449  *  @brief This function opens the ethX interface
 450  *
 451  *  @param dev     A pointer to net_device structure
 452  *  @return        0
 453  */
 454 static int lbs_open(struct net_device *dev)
 455 {
 456         struct lbs_private *priv = (struct lbs_private *) dev->priv ;
 457
 458         if(pre_open_check(dev) == -1)
 459                 return -1;
 460         priv->infra_open = 1 ;
 461         netif_wake_queue(priv->dev);
 462         if (priv->open == 0)
 463                 return lbs_dev_open(priv->dev) ;
 464         return 0;
 465 }
 466
 467 static int lbs_dev_close(struct net_device *dev)
 468 {
 469         struct lbs_private *priv = dev->priv;
 470
 471         lbs_deb_enter(LBS_DEB_NET);
 472
 473         netif_carrier_off(priv->dev);
 474         priv->open = 0;
 475
 476         lbs_deb_leave(LBS_DEB_NET);
 477         return 0;
 478 }
 479
 480 /**
 481  *  @brief This function closes the mshX interface
 482  *
 483  *  @param dev     A pointer to net_device structure
 484  *  @return        0
 485  */
 486 static int lbs_mesh_close(struct net_device *dev)
 487 {
 488         struct lbs_private *priv = (struct lbs_private *) (dev->priv);
 489
 490         priv->mesh_open = 0;
 491         netif_stop_queue(priv->mesh_dev);
 492         if (priv->infra_open == 0)
 493                 return lbs_dev_close(dev);
 494         else
 495                 return 0;
 496 }
 497
 498 /**
 499  *  @brief This function closes the ethX interface
 500  *
 501  *  @param dev     A pointer to net_device structure
 502  *  @return        0
 503  */
 504 static int lbs_close(struct net_device *dev)
 505 {
 506         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 507
 508         netif_stop_queue(dev);
 509         priv->infra_open = 0;
 510         if (priv->mesh_open == 0)
 511                 return lbs_dev_close(dev);
 512         else
 513                 return 0;
 514 }
 515
 516
 517 static int lbs_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 518 {
 519         int ret = 0;
 520         struct lbs_private *priv = dev->priv;
 521
 522         lbs_deb_enter(LBS_DEB_TX);
 523
 524         if (priv->dnld_sent || priv->adapter->TxLockFlag) {
 525                 priv->stats.tx_dropped++;
 526                 goto done;
 527         }
 528
 529         netif_stop_queue(priv->dev);
 530         if (priv->mesh_dev)
 531                 netif_stop_queue(priv->mesh_dev);
 532
 533         if (lbs_process_tx(priv, skb) == 0)
 534                 dev->trans_start = jiffies;
 535 done:
 536         lbs_deb_leave_args(LBS_DEB_TX, "ret %d", ret);
 537         return ret;
 538 }
 539
 540 /**
 541  * @brief Mark mesh packets and handover them to lbs_hard_start_xmit
 542  *
 543  */
 544 static int lbs_mesh_pre_start_xmit(struct sk_buff *skb,
 545                 struct net_device *dev)
 546 {
 547         struct lbs_private *priv = dev->priv;
 548         int ret;
 549
 550         lbs_deb_enter(LBS_DEB_MESH);
 551         if (priv->adapter->monitormode != LBS_MONITOR_OFF) {
 552                 netif_stop_queue(dev);
 553                 return -EOPNOTSUPP;
 554         }
 555
 556         SET_MESH_FRAME(skb);
 557
 558         ret = lbs_hard_start_xmit(skb, priv->mesh_dev);
 559         lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
 560         return ret;
 561 }
 562
 563 /**
 564  * @brief Mark non-mesh packets and handover them to lbs_hard_start_xmit
 565  *
 566  */
 567 static int lbs_pre_start_xmit(struct sk_buff *skb, struct net_device *dev)
 568 {
 569         struct lbs_private *priv = dev->priv;
 570         int ret;
 571
 572         lbs_deb_enter(LBS_DEB_TX);
 573
 574         if (priv->adapter->monitormode != LBS_MONITOR_OFF) {
 575                 netif_stop_queue(dev);
 576                 return -EOPNOTSUPP;
 577         }
 578
 579         UNSET_MESH_FRAME(skb);
 580
 581         ret = lbs_hard_start_xmit(skb, dev);
 582         lbs_deb_leave_args(LBS_DEB_TX, "ret %d", ret);
 583         return ret;
 584 }
 585
 586 static void lbs_tx_timeout(struct net_device *dev)
 587 {
 588         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 589
 590         lbs_deb_enter(LBS_DEB_TX);
 591
 592         lbs_pr_err("tx watch dog timeout\n");
 593
 594         priv->dnld_sent = DNLD_RES_RECEIVED;
 595         dev->trans_start = jiffies;
 596
 597         if (priv->adapter->currenttxskb) {
 598                 if (priv->adapter->monitormode != LBS_MONITOR_OFF) {
 599                         /* If we are here, we have not received feedback from
 600                            the previous packet.  Assume TX_FAIL and move on. */
 601                         priv->adapter->eventcause = 0x01000000;
 602                         lbs_send_tx_feedback(priv);
 603                 } else
 604                         wake_up_interruptible(&priv->waitq);
 605         } else if (dev == priv->dev) {
 606                 if (priv->adapter->connect_status == LBS_CONNECTED)
 607                         netif_wake_queue(priv->dev);
 608
 609         } else if (dev == priv->mesh_dev) {
 610                 if (priv->adapter->mesh_connect_status == LBS_CONNECTED)
 611                         netif_wake_queue(priv->mesh_dev);
 612         }
 613
 614         lbs_deb_leave(LBS_DEB_TX);
 615 }
 616
 617 void lbs_host_to_card_done(struct lbs_private *priv)
 618 {
 619         struct lbs_adapter *adapter = priv->adapter;
 620
 621         priv->dnld_sent = DNLD_RES_RECEIVED;
 622
 623         /* Wake main thread if commands are pending */
 624         if (!adapter->cur_cmd)
 625                 wake_up_interruptible(&priv->waitq);
 626
 627         if (priv->dev && adapter->connect_status == LBS_CONNECTED)
 628                 netif_wake_queue(priv->dev);
 629
 630         if (priv->mesh_dev && adapter->mesh_connect_status == LBS_CONNECTED)
 631                 netif_wake_queue(priv->mesh_dev);
 632 }
 633 EXPORT_SYMBOL_GPL(lbs_host_to_card_done);
 634
 635 /**
 636  *  @brief This function returns the network statistics
 637  *
 638  *  @param dev     A pointer to struct lbs_private structure
 639  *  @return        A pointer to net_device_stats structure
 640  */
 641 static struct net_device_stats *lbs_get_stats(struct net_device *dev)
 642 {
 643         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 644
 645         return &priv->stats;
 646 }
 647
 648 static int lbs_set_mac_address(struct net_device *dev, void *addr)
 649 {
 650         int ret = 0;
 651         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 652         struct lbs_adapter *adapter = priv->adapter;
 653         struct sockaddr *phwaddr = addr;
 654
 655         lbs_deb_enter(LBS_DEB_NET);
 656
 657         /* In case it was called from the mesh device */
 658         dev = priv->dev ;
 659
 660         memset(adapter->current_addr, 0, ETH_ALEN);
 661
 662         /* dev->dev_addr is 8 bytes */
 663         lbs_deb_hex(LBS_DEB_NET, "dev->dev_addr", dev->dev_addr, ETH_ALEN);
 664
 665         lbs_deb_hex(LBS_DEB_NET, "addr", phwaddr->sa_data, ETH_ALEN);
 666         memcpy(adapter->current_addr, phwaddr->sa_data, ETH_ALEN);
 667
 668         ret = lbs_prepare_and_send_command(priv, CMD_802_11_MAC_ADDRESS,
 669                                     CMD_ACT_SET,
 670                                     CMD_OPTION_WAITFORRSP, 0, NULL);
 671
 672         if (ret) {
 673                 lbs_deb_net("set MAC address failed\n");
 674                 ret = -1;
 675                 goto done;
 676         }
 677
 678         lbs_deb_hex(LBS_DEB_NET, "adapter->macaddr", adapter->current_addr, ETH_ALEN);
 679         memcpy(dev->dev_addr, adapter->current_addr, ETH_ALEN);
 680         if (priv->mesh_dev)
 681                 memcpy(priv->mesh_dev->dev_addr, adapter->current_addr, ETH_ALEN);
 682
 683 done:
 684         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 685         return ret;
 686 }
 687
 688 static int lbs_copy_multicast_address(struct lbs_adapter *adapter,
 689                                      struct net_device *dev)
 690 {
 691         int i = 0;
 692         struct dev_mc_list *mcptr = dev->mc_list;
 693
 694         for (i = 0; i < dev->mc_count; i++) {
 695                 memcpy(&adapter->multicastlist[i], mcptr->dmi_addr, ETH_ALEN);
 696                 mcptr = mcptr->next;
 697         }
 698
 699         return i;
 700
 701 }
 702
 703 static void lbs_set_multicast_list(struct net_device *dev)
 704 {
 705         struct lbs_private *priv = dev->priv;
 706         struct lbs_adapter *adapter = priv->adapter;
 707         int oldpacketfilter;
 708         DECLARE_MAC_BUF(mac);
 709
 710         lbs_deb_enter(LBS_DEB_NET);
 711
 712         oldpacketfilter = adapter->currentpacketfilter;
 713
 714         if (dev->flags & IFF_PROMISC) {
 715                 lbs_deb_net("enable promiscuous mode\n");
 716                 adapter->currentpacketfilter |=
 717                     CMD_ACT_MAC_PROMISCUOUS_ENABLE;
 718                 adapter->currentpacketfilter &=
 719                     ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
 720                       CMD_ACT_MAC_MULTICAST_ENABLE);
 721         } else {
 722                 /* Multicast */
 723                 adapter->currentpacketfilter &=
 724                     ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
 725
 726                 if (dev->flags & IFF_ALLMULTI || dev->mc_count >
 727                     MRVDRV_MAX_MULTICAST_LIST_SIZE) {
 728                         lbs_deb_net( "enabling all multicast\n");
 729                         adapter->currentpacketfilter |=
 730                             CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
 731                         adapter->currentpacketfilter &=
 732                             ~CMD_ACT_MAC_MULTICAST_ENABLE;
 733                 } else {
 734                         adapter->currentpacketfilter &=
 735                             ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
 736
 737                         if (!dev->mc_count) {
 738                                 lbs_deb_net("no multicast addresses, "
 739                                        "disabling multicast\n");
 740                                 adapter->currentpacketfilter &=
 741                                     ~CMD_ACT_MAC_MULTICAST_ENABLE;
 742                         } else {
 743                                 int i;
 744
 745                                 adapter->currentpacketfilter |=
 746                                     CMD_ACT_MAC_MULTICAST_ENABLE;
 747
 748                                 adapter->nr_of_multicastmacaddr =
 749                                     lbs_copy_multicast_address(adapter, dev);
 750
 751                                 lbs_deb_net("multicast addresses: %d\n",
 752                                        dev->mc_count);
 753
 754                                 for (i = 0; i < dev->mc_count; i++) {
 755                                         lbs_deb_net("Multicast address %d:%s\n",
 756                                                i, print_mac(mac,
 757                                                adapter->multicastlist[i]));
 758                                 }
 759                                 /* send multicast addresses to firmware */
 760                                 lbs_prepare_and_send_command(priv,
 761                                                       CMD_MAC_MULTICAST_ADR,
 762                                                       CMD_ACT_SET, 0, 0,
 763                                                       NULL);
 764                         }
 765                 }
 766         }
 767
 768         if (adapter->currentpacketfilter != oldpacketfilter) {
 769                 lbs_set_mac_packet_filter(priv);
 770         }
 771
 772         lbs_deb_leave(LBS_DEB_NET);
 773 }
 774
 775 /**
 776  *  @brief This function handles the major jobs in the LBS driver.
 777  *  It handles all events generated by firmware, RX data received
 778  *  from firmware and TX data sent from kernel.
 779  *
 780  *  @param data    A pointer to lbs_thread structure
 781  *  @return        0
 782  */
 783 static int lbs_thread(void *data)
 784 {
 785         struct net_device *dev = data;
 786         struct lbs_private *priv = dev->priv;
 787         struct lbs_adapter *adapter = priv->adapter;
 788         wait_queue_t wait;
 789         u8 ireg = 0;
 790
 791         lbs_deb_enter(LBS_DEB_THREAD);
 792
 793         init_waitqueue_entry(&wait, current);
 794
 795         set_freezable();
 796
 797         for (;;) {
 798                 lbs_deb_thread( "main-thread 111: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
 799                                 adapter->intcounter, adapter->currenttxskb, priv->dnld_sent);
 800
 801                 add_wait_queue(&priv->waitq, &wait);
 802                 set_current_state(TASK_INTERRUPTIBLE);
 803                 spin_lock_irq(&adapter->driver_lock);
 804
 805                 if ((adapter->psstate == PS_STATE_SLEEP) ||
 806                     (!adapter->intcounter && (priv->dnld_sent || adapter->cur_cmd || list_empty(&adapter->cmdpendingq)))) {
 807                         lbs_deb_thread("main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
 808                                        adapter->connect_status, adapter->intcounter,
 809                                        adapter->psmode, adapter->psstate);
 810                         spin_unlock_irq(&adapter->driver_lock);
 811                         schedule();
 812                 } else
 813                         spin_unlock_irq(&adapter->driver_lock);
 814
 815                 lbs_deb_thread("main-thread 222 (waking up): intcounter=%d currenttxskb=%p dnld_sent=%d\n",
 816                                adapter->intcounter, adapter->currenttxskb, priv->dnld_sent);
 817
 818                 set_current_state(TASK_RUNNING);
 819                 remove_wait_queue(&priv->waitq, &wait);
 820                 try_to_freeze();
 821
 822                 lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
 823                                adapter->intcounter, adapter->currenttxskb, priv->dnld_sent);
 824
 825                 if (kthread_should_stop() || adapter->surpriseremoved) {
 826                         lbs_deb_thread("main-thread: break from main thread: surpriseremoved=0x%x\n",
 827                                        adapter->surpriseremoved);
 828                         break;
 829                 }
 830
 831
 832                 spin_lock_irq(&adapter->driver_lock);
 833
 834                 if (adapter->intcounter) {
 835                         u8 int_status;
 836
 837                         adapter->intcounter = 0;
 838                         int_status = priv->hw_get_int_status(priv, &ireg);
 839
 840                         if (int_status) {
 841                                 lbs_deb_thread("main-thread: reading HOST_INT_STATUS_REG failed\n");
 842                                 spin_unlock_irq(&adapter->driver_lock);
 843                                 continue;
 844                         }
 845                         adapter->hisregcpy |= ireg;
 846                 }
 847
 848                 lbs_deb_thread("main-thread 444: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
 849                                adapter->intcounter, adapter->currenttxskb, priv->dnld_sent);
 850
 851                 /* command response? */
 852                 if (adapter->hisregcpy & MRVDRV_CMD_UPLD_RDY) {
 853                         lbs_deb_thread("main-thread: cmd response ready\n");
 854
 855                         adapter->hisregcpy &= ~MRVDRV_CMD_UPLD_RDY;
 856                         spin_unlock_irq(&adapter->driver_lock);
 857                         lbs_process_rx_command(priv);
 858                         spin_lock_irq(&adapter->driver_lock);
 859                 }
 860
 861                 /* Any Card Event */
 862                 if (adapter->hisregcpy & MRVDRV_CARDEVENT) {
 863                         lbs_deb_thread("main-thread: Card Event Activity\n");
 864
 865                         adapter->hisregcpy &= ~MRVDRV_CARDEVENT;
 866
 867                         if (priv->hw_read_event_cause(priv)) {
 868                                 lbs_pr_alert("main-thread: hw_read_event_cause failed\n");
 869                                 spin_unlock_irq(&adapter->driver_lock);
 870                                 continue;
 871                         }
 872                         spin_unlock_irq(&adapter->driver_lock);
 873                         lbs_process_event(priv);
 874                 } else
 875                         spin_unlock_irq(&adapter->driver_lock);
 876
 877                 /* Check if we need to confirm Sleep Request received previously */
 878                 if (adapter->psstate == PS_STATE_PRE_SLEEP &&
 879                     !priv->dnld_sent && !adapter->cur_cmd) {
 880                         if (adapter->connect_status == LBS_CONNECTED) {
 881                                 lbs_deb_thread("main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p dnld_sent=%d cur_cmd=%p, confirm now\n",
 882                                                adapter->intcounter, adapter->currenttxskb, priv->dnld_sent, adapter->cur_cmd);
 883
 884                                 lbs_ps_confirm_sleep(priv, (u16) adapter->psmode);
 885                         } else {
 886                                 /* workaround for firmware sending
 887                                  * deauth/linkloss event immediately
 888                                  * after sleep request; remove this
 889                                  * after firmware fixes it
 890                                  */
 891                                 adapter->psstate = PS_STATE_AWAKE;
 892                                 lbs_pr_alert("main-thread: ignore PS_SleepConfirm in non-connected state\n");
 893                         }
 894                 }
 895
 896                 /* The PS state is changed during processing of Sleep Request
 897                  * event above
 898                  */
 899                 if ((priv->adapter->psstate == PS_STATE_SLEEP) ||
 900                     (priv->adapter->psstate == PS_STATE_PRE_SLEEP))
 901                         continue;
 902
 903                 /* Execute the next command */
 904                 if (!priv->dnld_sent && !priv->adapter->cur_cmd)
 905                         lbs_execute_next_command(priv);
 906
 907                 /* Wake-up command waiters which can't sleep in
 908                  * lbs_prepare_and_send_command
 909                  */
 910                 if (!list_empty(&adapter->cmdpendingq))
 911                         wake_up_all(&adapter->cmd_pending);
 912
 913                 lbs_tx_runqueue(priv);
 914         }
 915
 916         del_timer(&adapter->command_timer);
 917         wake_up_all(&adapter->cmd_pending);
 918
 919         lbs_deb_leave(LBS_DEB_THREAD);
 920         return 0;
 921 }
 922
 923 /**
 924  *  @brief This function downloads firmware image, gets
 925  *  HW spec from firmware and set basic parameters to
 926  *  firmware.
 927  *
 928  *  @param priv    A pointer to struct lbs_private structure
 929  *  @return        0 or -1
 930  */
 931 static int lbs_setup_firmware(struct lbs_private *priv)
 932 {
 933         int ret = -1;
 934         struct lbs_adapter *adapter = priv->adapter;
 935         struct cmd_ds_mesh_access mesh_access;
 936
 937         lbs_deb_enter(LBS_DEB_FW);
 938
 939         /*
 940          * Read MAC address from HW
 941          */
 942         memset(adapter->current_addr, 0xff, ETH_ALEN);
 943
 944         ret = lbs_prepare_and_send_command(priv, CMD_GET_HW_SPEC,
 945                                     0, CMD_OPTION_WAITFORRSP, 0, NULL);
 946
 947         if (ret) {
 948                 ret = -1;
 949                 goto done;
 950         }
 951
 952         lbs_set_mac_packet_filter(priv);
 953
 954         /* Get the supported Data rates */
 955         ret = lbs_prepare_and_send_command(priv, CMD_802_11_DATA_RATE,
 956                                     CMD_ACT_GET_TX_RATE,
 957                                     CMD_OPTION_WAITFORRSP, 0, NULL);
 958
 959         if (ret) {
 960                 ret = -1;
 961                 goto done;
 962         }
 963
 964         /* Disable mesh autostart */
 965         if (priv->mesh_dev) {
 966                 memset(&mesh_access, 0, sizeof(mesh_access));
 967                 mesh_access.data[0] = cpu_to_le32(0);
 968                 ret = lbs_prepare_and_send_command(priv,
 969                                 CMD_MESH_ACCESS,
 970                                 CMD_ACT_MESH_SET_AUTOSTART_ENABLED,
 971                                 CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
 972                 if (ret) {
 973                         ret = -1;
 974                         goto done;
 975                 }
 976                 priv->mesh_autostart_enabled = 0;
 977         }
 978
 979         ret = 0;
 980 done:
 981         lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
 982         return ret;
 983 }
 984
 985 /**
 986  *  This function handles the timeout of command sending.
 987  *  It will re-send the same command again.
 988  */
 989 static void command_timer_fn(unsigned long data)
 990 {
 991         struct lbs_private *priv = (struct lbs_private *)data;
 992         struct lbs_adapter *adapter = priv->adapter;
 993         struct cmd_ctrl_node *ptempnode;
 994         struct cmd_ds_command *cmd;
 995         unsigned long flags;
 996
 997         ptempnode = adapter->cur_cmd;
 998         if (ptempnode == NULL) {
 999                 lbs_deb_fw("ptempnode empty\n");
1000                 return;
1001         }
1002
1003         cmd = (struct cmd_ds_command *)ptempnode->bufvirtualaddr;
1004         if (!cmd) {
1005                 lbs_deb_fw("cmd is NULL\n");
1006                 return;
1007         }
1008
1009         lbs_deb_fw("command_timer_fn fired, cmd %x\n", cmd->command);
1010
1011         if (!adapter->fw_ready)
1012                 return;
1013
1014         spin_lock_irqsave(&adapter->driver_lock, flags);
1015         adapter->cur_cmd = NULL;
1016         spin_unlock_irqrestore(&adapter->driver_lock, flags);
1017
1018         lbs_deb_fw("re-sending same command because of timeout\n");
1019         lbs_queue_cmd(adapter, ptempnode, 0);
1020
1021         wake_up_interruptible(&priv->waitq);
1022
1023         return;
1024 }
1025
1026 static int lbs_init_adapter(struct lbs_private *priv)
1027 {
1028         struct lbs_adapter *adapter = priv->adapter;
1029         size_t bufsize;
1030         int i, ret = 0;
1031
1032         /* Allocate buffer to store the BSSID list */
1033         bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
1034         adapter->networks = kzalloc(bufsize, GFP_KERNEL);
1035         if (!adapter->networks) {
1036                 lbs_pr_err("Out of memory allocating beacons\n");
1037                 ret = -1;
1038                 goto out;
1039         }
1040
1041         /* Initialize scan result lists */
1042         INIT_LIST_HEAD(&adapter->network_free_list);
1043         INIT_LIST_HEAD(&adapter->network_list);
1044         for (i = 0; i < MAX_NETWORK_COUNT; i++) {
1045                 list_add_tail(&adapter->networks[i].list,
1046                               &adapter->network_free_list);
1047         }
1048
1049         adapter->lbs_ps_confirm_sleep.seqnum = cpu_to_le16(++adapter->seqnum);
1050         adapter->lbs_ps_confirm_sleep.command =
1051             cpu_to_le16(CMD_802_11_PS_MODE);
1052         adapter->lbs_ps_confirm_sleep.size =
1053             cpu_to_le16(sizeof(struct PS_CMD_ConfirmSleep));
1054         adapter->lbs_ps_confirm_sleep.action =
1055             cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
1056
1057         memset(adapter->current_addr, 0xff, ETH_ALEN);
1058
1059         adapter->connect_status = LBS_DISCONNECTED;
1060         adapter->mesh_connect_status = LBS_DISCONNECTED;
1061         adapter->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
1062         adapter->mode = IW_MODE_INFRA;
1063         adapter->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;
1064         adapter->currentpacketfilter = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
1065         adapter->radioon = RADIO_ON;
1066         adapter->auto_rate = 1;
1067         adapter->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
1068         adapter->psmode = LBS802_11POWERMODECAM;
1069         adapter->psstate = PS_STATE_FULL_POWER;
1070
1071         mutex_init(&adapter->lock);
1072
1073         memset(&adapter->tx_queue_ps, 0, NR_TX_QUEUE*sizeof(struct sk_buff*));
1074         adapter->tx_queue_idx = 0;
1075         spin_lock_init(&adapter->txqueue_lock);
1076
1077         setup_timer(&adapter->command_timer, command_timer_fn,
1078                     (unsigned long)priv);
1079
1080         INIT_LIST_HEAD(&adapter->cmdfreeq);
1081         INIT_LIST_HEAD(&adapter->cmdpendingq);
1082
1083         spin_lock_init(&adapter->driver_lock);
1084         init_waitqueue_head(&adapter->cmd_pending);
1085
1086         /* Allocate the command buffers */
1087         if (lbs_allocate_cmd_buffer(priv)) {
1088                 lbs_pr_err("Out of memory allocating command buffers\n");
1089                 ret = -1;
1090         }
1091
1092 out:
1093         return ret;
1094 }
1095
1096 static void lbs_free_adapter(struct lbs_private *priv)
1097 {
1098         struct lbs_adapter *adapter = priv->adapter;
1099
1100         if (!adapter) {
1101                 lbs_deb_fw("why double free adapter?\n");
1102                 return;
1103         }
1104
1105         lbs_deb_fw("free command buffer\n");
1106         lbs_free_cmd_buffer(priv);
1107
1108         lbs_deb_fw("free command_timer\n");
1109         del_timer(&adapter->command_timer);
1110
1111         lbs_deb_fw("free scan results table\n");
1112         kfree(adapter->networks);
1113         adapter->networks = NULL;
1114
1115         /* Free the adapter object itself */
1116         lbs_deb_fw("free adapter\n");
1117         kfree(adapter);
1118         priv->adapter = NULL;
1119 }
1120
1121 /**
1122  * @brief This function adds the card. it will probe the
1123  * card, allocate the lbs_priv and initialize the device.
1124  *
1125  *  @param card    A pointer to card
1126  *  @return        A pointer to struct lbs_private structure
1127  */
1128 struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
1129 {
1130         struct net_device *dev = NULL;
1131         struct lbs_private *priv = NULL;
1132
1133         lbs_deb_enter(LBS_DEB_NET);
1134
1135         /* Allocate an Ethernet device and register it */
1136         dev = alloc_etherdev(sizeof(struct lbs_private));
1137         if (!dev) {
1138                 lbs_pr_err("init ethX device failed\n");
1139                 goto done;
1140         }
1141         priv = dev->priv;
1142
1143         /* allocate buffer for struct lbs_adapter */
1144         priv->adapter = kzalloc(sizeof(struct lbs_adapter), GFP_KERNEL);
1145         if (!priv->adapter) {
1146                 lbs_pr_err("allocate buffer for struct lbs_adapter failed\n");
1147                 goto err_kzalloc;
1148         }
1149
1150         if (lbs_init_adapter(priv)) {
1151                 lbs_pr_err("failed to initialize adapter structure.\n");
1152                 goto err_init_adapter;
1153         }
1154
1155         priv->dev = dev;
1156         priv->card = card;
1157         priv->mesh_open = 0;
1158         priv->infra_open = 0;
1159
1160         /* Setup the OS Interface to our functions */
1161         dev->open = lbs_open;
1162         dev->hard_start_xmit = lbs_pre_start_xmit;
1163         dev->stop = lbs_close;
1164         dev->set_mac_address = lbs_set_mac_address;
1165         dev->tx_timeout = lbs_tx_timeout;
1166         dev->get_stats = lbs_get_stats;
1167         dev->watchdog_timeo = 5 * HZ;
1168         dev->ethtool_ops = &lbs_ethtool_ops;
1169 #ifdef  WIRELESS_EXT
1170         dev->wireless_handlers = (struct iw_handler_def *)&lbs_handler_def;
1171 #endif
1172         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1173         dev->set_multicast_list = lbs_set_multicast_list;
1174
1175         SET_NETDEV_DEV(dev, dmdev);
1176
1177         priv->rtap_net_dev = NULL;
1178
1179         lbs_deb_thread("Starting main thread...\n");
1180         init_waitqueue_head(&priv->waitq);
1181         priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
1182         if (IS_ERR(priv->main_thread)) {
1183                 lbs_deb_thread("Error creating main thread.\n");
1184                 goto err_init_adapter;
1185         }
1186
1187         priv->work_thread = create_singlethread_workqueue("lbs_worker");
1188         INIT_DELAYED_WORK(&priv->assoc_work, lbs_association_worker);
1189         INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
1190         INIT_WORK(&priv->sync_channel, lbs_sync_channel);
1191
1192         goto done;
1193
1194 err_init_adapter:
1195         lbs_free_adapter(priv);
1196
1197 err_kzalloc:
1198         free_netdev(dev);
1199         priv = NULL;
1200
1201 done:
1202         lbs_deb_leave_args(LBS_DEB_NET, "priv %p", priv);
1203         return priv;
1204 }
1205 EXPORT_SYMBOL_GPL(lbs_add_card);
1206
1207
1208 int lbs_remove_card(struct lbs_private *priv)
1209 {
1210         struct lbs_adapter *adapter = priv->adapter;
1211         struct net_device *dev = priv->dev;
1212         union iwreq_data wrqu;
1213
1214         lbs_deb_enter(LBS_DEB_MAIN);
1215
1216         lbs_remove_rtap(priv);
1217
1218         dev = priv->dev;
1219         device_remove_file(&dev->dev, &dev_attr_lbs_rtap);
1220
1221         cancel_delayed_work(&priv->scan_work);
1222         cancel_delayed_work(&priv->assoc_work);
1223         destroy_workqueue(priv->work_thread);
1224
1225         if (adapter->psmode == LBS802_11POWERMODEMAX_PSP) {
1226                 adapter->psmode = LBS802_11POWERMODECAM;
1227                 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1228         }
1229
1230         memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1231         wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1232         wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1233
1234         /* Stop the thread servicing the interrupts */
1235         adapter->surpriseremoved = 1;
1236         kthread_stop(priv->main_thread);
1237
1238         lbs_free_adapter(priv);
1239
1240         priv->dev = NULL;
1241         free_netdev(dev);
1242
1243         lbs_deb_leave(LBS_DEB_MAIN);
1244         return 0;
1245 }
1246 EXPORT_SYMBOL_GPL(lbs_remove_card);
1247
1248
1249 int lbs_start_card(struct lbs_private *priv)
1250 {
1251         struct net_device *dev = priv->dev;
1252         int ret = -1;
1253
1254         lbs_deb_enter(LBS_DEB_MAIN);
1255
1256         /* poke the firmware */
1257         ret = lbs_setup_firmware(priv);
1258         if (ret)
1259                 goto done;
1260
1261         /* init 802.11d */
1262         lbs_init_11d(priv);
1263
1264         if (register_netdev(dev)) {
1265                 lbs_pr_err("cannot register ethX device\n");
1266                 goto done;
1267         }
1268         if (device_create_file(&dev->dev, &dev_attr_lbs_rtap))
1269                 lbs_pr_err("cannot register lbs_rtap attribute\n");
1270
1271         lbs_debugfs_init_one(priv, dev);
1272
1273         lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
1274
1275         ret = 0;
1276
1277 done:
1278         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1279         return ret;
1280 }
1281 EXPORT_SYMBOL_GPL(lbs_start_card);
1282
1283
1284 int lbs_stop_card(struct lbs_private *priv)
1285 {
1286         struct net_device *dev = priv->dev;
1287         int ret = -1;
1288         struct cmd_ctrl_node *cmdnode;
1289         unsigned long flags;
1290
1291         lbs_deb_enter(LBS_DEB_MAIN);
1292
1293         netif_stop_queue(priv->dev);
1294         netif_carrier_off(priv->dev);
1295
1296         lbs_debugfs_remove_one(priv);
1297
1298         /* Flush pending command nodes */
1299         spin_lock_irqsave(&priv->adapter->driver_lock, flags);
1300         list_for_each_entry(cmdnode, &priv->adapter->cmdpendingq, list) {
1301                 cmdnode->cmdwaitqwoken = 1;
1302                 wake_up_interruptible(&cmdnode->cmdwait_q);
1303         }
1304         spin_unlock_irqrestore(&priv->adapter->driver_lock, flags);
1305
1306         unregister_netdev(dev);
1307
1308         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1309         return ret;
1310 }
1311 EXPORT_SYMBOL_GPL(lbs_stop_card);
1312
1313
1314 /**
1315  * @brief This function adds mshX interface
1316  *
1317  *  @param priv    A pointer to the struct lbs_private structure
1318  *  @return        0 if successful, -X otherwise
1319  */
1320 int lbs_add_mesh(struct lbs_private *priv, struct device *dev)
1321 {
1322         struct net_device *mesh_dev = NULL;
1323         int ret = 0;
1324
1325         lbs_deb_enter(LBS_DEB_MESH);
1326
1327         /* Allocate a virtual mesh device */
1328         if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
1329                 lbs_deb_mesh("init mshX device failed\n");
1330                 ret = -ENOMEM;
1331                 goto done;
1332         }
1333         mesh_dev->priv = priv;
1334         priv->mesh_dev = mesh_dev;
1335
1336         mesh_dev->open = lbs_mesh_open;
1337         mesh_dev->hard_start_xmit = lbs_mesh_pre_start_xmit;
1338         mesh_dev->stop = lbs_mesh_close;
1339         mesh_dev->get_stats = lbs_get_stats;
1340         mesh_dev->set_mac_address = lbs_set_mac_address;
1341         mesh_dev->ethtool_ops = &lbs_ethtool_ops;
1342         memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
1343                         sizeof(priv->dev->dev_addr));
1344
1345         SET_NETDEV_DEV(priv->mesh_dev, dev);
1346
1347 #ifdef  WIRELESS_EXT
1348         mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
1349 #endif
1350         /* Register virtual mesh interface */
1351         ret = register_netdev(mesh_dev);
1352         if (ret) {
1353                 lbs_pr_err("cannot register mshX virtual interface\n");
1354                 goto err_free;
1355         }
1356
1357         ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1358         if (ret)
1359                 goto err_unregister;
1360
1361         /* Everything successful */
1362         ret = 0;
1363         goto done;
1364
1365 err_unregister:
1366         unregister_netdev(mesh_dev);
1367
1368 err_free:
1369         free_netdev(mesh_dev);
1370
1371 done:
1372         lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1373         return ret;
1374 }
1375 EXPORT_SYMBOL_GPL(lbs_add_mesh);
1376
1377
1378 void lbs_remove_mesh(struct lbs_private *priv)
1379 {
1380         struct net_device *mesh_dev;
1381
1382         lbs_deb_enter(LBS_DEB_MAIN);
1383
1384         if (!priv)
1385                 goto out;
1386
1387         mesh_dev = priv->mesh_dev;
1388
1389         netif_stop_queue(mesh_dev);
1390         netif_carrier_off(priv->mesh_dev);
1391
1392         sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1393         unregister_netdev(mesh_dev);
1394
1395         priv->mesh_dev = NULL ;
1396         free_netdev(mesh_dev);
1397
1398 out:
1399         lbs_deb_leave(LBS_DEB_MAIN);
1400 }
1401 EXPORT_SYMBOL_GPL(lbs_remove_mesh);
1402
1403 /**
1404  *  @brief This function finds the CFP in
1405  *  region_cfp_table based on region and band parameter.
1406  *
1407  *  @param region  The region code
1408  *  @param band    The band
1409  *  @param cfp_no  A pointer to CFP number
1410  *  @return        A pointer to CFP
1411  */
1412 struct chan_freq_power *lbs_get_region_cfp_table(u8 region, u8 band, int *cfp_no)
1413 {
1414         int i, end;
1415
1416         lbs_deb_enter(LBS_DEB_MAIN);
1417
1418         end = ARRAY_SIZE(region_cfp_table);
1419
1420         for (i = 0; i < end ; i++) {
1421                 lbs_deb_main("region_cfp_table[i].region=%d\n",
1422                         region_cfp_table[i].region);
1423                 if (region_cfp_table[i].region == region) {
1424                         *cfp_no = region_cfp_table[i].cfp_no_BG;
1425                         lbs_deb_leave(LBS_DEB_MAIN);
1426                         return region_cfp_table[i].cfp_BG;
1427                 }
1428         }
1429
1430         lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1431         return NULL;
1432 }
1433
1434 int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band)
1435 {
1436         struct lbs_adapter *adapter = priv->adapter;
1437         int ret = 0;
1438         int i = 0;
1439
1440         struct chan_freq_power *cfp;
1441         int cfp_no;
1442
1443         lbs_deb_enter(LBS_DEB_MAIN);
1444
1445         memset(adapter->region_channel, 0, sizeof(adapter->region_channel));
1446
1447         {
1448                 cfp = lbs_get_region_cfp_table(region, band, &cfp_no);
1449                 if (cfp != NULL) {
1450                         adapter->region_channel[i].nrcfp = cfp_no;
1451                         adapter->region_channel[i].CFP = cfp;
1452                 } else {
1453                         lbs_deb_main("wrong region code %#x in band B/G\n",
1454                                region);
1455                         ret = -1;
1456                         goto out;
1457                 }
1458                 adapter->region_channel[i].valid = 1;
1459                 adapter->region_channel[i].region = region;
1460                 adapter->region_channel[i].band = band;
1461                 i++;
1462         }
1463 out:
1464         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1465         return ret;
1466 }
1467
1468 /**
1469  *  @brief This function handles the interrupt. it will change PS
1470  *  state if applicable. it will wake up main_thread to handle
1471  *  the interrupt event as well.
1472  *
1473  *  @param dev     A pointer to net_device structure
1474  *  @return        n/a
1475  */
1476 void lbs_interrupt(struct net_device *dev)
1477 {
1478         struct lbs_private *priv = dev->priv;
1479
1480         lbs_deb_enter(LBS_DEB_THREAD);
1481
1482         lbs_deb_thread("lbs_interrupt: intcounter=%d\n",
1483                priv->adapter->intcounter);
1484
1485         priv->adapter->intcounter++;
1486
1487         if (priv->adapter->psstate == PS_STATE_SLEEP) {
1488                 priv->adapter->psstate = PS_STATE_AWAKE;
1489                 netif_wake_queue(dev);
1490                 if (priv->mesh_dev)
1491                         netif_wake_queue(priv->mesh_dev);
1492         }
1493
1494         wake_up_interruptible(&priv->waitq);
1495
1496         lbs_deb_leave(LBS_DEB_THREAD);
1497 }
1498 EXPORT_SYMBOL_GPL(lbs_interrupt);
1499
1500 int lbs_reset_device(struct lbs_private *priv)
1501 {
1502         int ret;
1503
1504         lbs_deb_enter(LBS_DEB_MAIN);
1505         ret = lbs_prepare_and_send_command(priv, CMD_802_11_RESET,
1506                                     CMD_ACT_HALT, 0, 0, NULL);
1507         msleep_interruptible(10);
1508
1509         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1510         return ret;
1511 }
1512 EXPORT_SYMBOL_GPL(lbs_reset_device);
1513
1514 static int __init lbs_init_module(void)
1515 {
1516         lbs_deb_enter(LBS_DEB_MAIN);
1517         lbs_debugfs_init();
1518         lbs_deb_leave(LBS_DEB_MAIN);
1519         return 0;
1520 }
1521
1522 static void __exit lbs_exit_module(void)
1523 {
1524         lbs_deb_enter(LBS_DEB_MAIN);
1525
1526         lbs_debugfs_remove();
1527
1528         lbs_deb_leave(LBS_DEB_MAIN);
1529 }
1530
1531 /*
1532  * rtap interface support fuctions
1533  */
1534
1535 static int lbs_rtap_open(struct net_device *dev)
1536 {
1537         netif_carrier_off(dev);
1538         netif_stop_queue(dev);
1539         return 0;
1540 }
1541
1542 static int lbs_rtap_stop(struct net_device *dev)
1543 {
1544         return 0;
1545 }
1546
1547 static int lbs_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1548 {
1549         netif_stop_queue(dev);
1550         return -EOPNOTSUPP;
1551 }
1552
1553 static struct net_device_stats *lbs_rtap_get_stats(struct net_device *dev)
1554 {
1555         struct lbs_private *priv = dev->priv;
1556         return &priv->ieee->stats;
1557 }
1558
1559
1560 void lbs_remove_rtap(struct lbs_private *priv)
1561 {
1562         if (priv->rtap_net_dev == NULL)
1563                 return;
1564         unregister_netdev(priv->rtap_net_dev);
1565         free_ieee80211(priv->rtap_net_dev);
1566         priv->rtap_net_dev = NULL;
1567 }
1568
1569 int lbs_add_rtap(struct lbs_private *priv)
1570 {
1571         int rc = 0;
1572
1573         if (priv->rtap_net_dev)
1574                 return -EPERM;
1575
1576         priv->rtap_net_dev = alloc_ieee80211(0);
1577         if (priv->rtap_net_dev == NULL)
1578                 return -ENOMEM;
1579
1580
1581         priv->ieee = netdev_priv(priv->rtap_net_dev);
1582
1583         strcpy(priv->rtap_net_dev->name, "rtap%d");
1584
1585         priv->rtap_net_dev->type = ARPHRD_IEEE80211_RADIOTAP;
1586         priv->rtap_net_dev->open = lbs_rtap_open;
1587         priv->rtap_net_dev->stop = lbs_rtap_stop;
1588         priv->rtap_net_dev->get_stats = lbs_rtap_get_stats;
1589         priv->rtap_net_dev->hard_start_xmit = lbs_rtap_hard_start_xmit;
1590         priv->rtap_net_dev->set_multicast_list = lbs_set_multicast_list;
1591         priv->rtap_net_dev->priv = priv;
1592
1593         priv->ieee->iw_mode = IW_MODE_MONITOR;
1594
1595         rc = register_netdev(priv->rtap_net_dev);
1596         if (rc) {
1597                 free_ieee80211(priv->rtap_net_dev);
1598                 priv->rtap_net_dev = NULL;
1599                 return rc;
1600         }
1601
1602         return 0;
1603 }
1604
1605
1606 module_init(lbs_init_module);
1607 module_exit(lbs_exit_module);
1608
1609 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1610 MODULE_AUTHOR("Marvell International Ltd.");
1611 MODULE_LICENSE("GPL");