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