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 libertas_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
  28 #ifdef  DEBUG
  29     "-dbg"
  30 #endif
  31     "";
  32
  33
  34 /* Module parameters */
  35 unsigned int libertas_debug = 0;
  36 module_param(libertas_debug, int, 0644);
  37 EXPORT_SYMBOL_GPL(libertas_debug);
  38
  39
  40 #define WLAN_TX_PWR_DEFAULT             20      /*100mW */
  41 #define WLAN_TX_PWR_US_DEFAULT          20      /*100mW */
  42 #define WLAN_TX_PWR_JP_DEFAULT          16      /*50mW */
  43 #define WLAN_TX_PWR_FR_DEFAULT          20      /*100mW */
  44 #define WLAN_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, WLAN_TX_PWR_US_DEFAULT},
  50         {2, 2417, WLAN_TX_PWR_US_DEFAULT},
  51         {3, 2422, WLAN_TX_PWR_US_DEFAULT},
  52         {4, 2427, WLAN_TX_PWR_US_DEFAULT},
  53         {5, 2432, WLAN_TX_PWR_US_DEFAULT},
  54         {6, 2437, WLAN_TX_PWR_US_DEFAULT},
  55         {7, 2442, WLAN_TX_PWR_US_DEFAULT},
  56         {8, 2447, WLAN_TX_PWR_US_DEFAULT},
  57         {9, 2452, WLAN_TX_PWR_US_DEFAULT},
  58         {10, 2457, WLAN_TX_PWR_US_DEFAULT},
  59         {11, 2462, WLAN_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, WLAN_TX_PWR_EMEA_DEFAULT},
  65         {2, 2417, WLAN_TX_PWR_EMEA_DEFAULT},
  66         {3, 2422, WLAN_TX_PWR_EMEA_DEFAULT},
  67         {4, 2427, WLAN_TX_PWR_EMEA_DEFAULT},
  68         {5, 2432, WLAN_TX_PWR_EMEA_DEFAULT},
  69         {6, 2437, WLAN_TX_PWR_EMEA_DEFAULT},
  70         {7, 2442, WLAN_TX_PWR_EMEA_DEFAULT},
  71         {8, 2447, WLAN_TX_PWR_EMEA_DEFAULT},
  72         {9, 2452, WLAN_TX_PWR_EMEA_DEFAULT},
  73         {10, 2457, WLAN_TX_PWR_EMEA_DEFAULT},
  74         {11, 2462, WLAN_TX_PWR_EMEA_DEFAULT},
  75         {12, 2467, WLAN_TX_PWR_EMEA_DEFAULT},
  76         {13, 2472, WLAN_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, WLAN_TX_PWR_DEFAULT},
  82         {11, 2462, WLAN_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, WLAN_TX_PWR_FR_DEFAULT},
  88         {11, 2462, WLAN_TX_PWR_FR_DEFAULT},
  89         {12, 2467, WLAN_TX_PWR_FR_DEFAULT},
  90         {13, 2472, WLAN_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, WLAN_TX_PWR_JP_DEFAULT},
  96         {2, 2417, WLAN_TX_PWR_JP_DEFAULT},
  97         {3, 2422, WLAN_TX_PWR_JP_DEFAULT},
  98         {4, 2427, WLAN_TX_PWR_JP_DEFAULT},
  99         {5, 2432, WLAN_TX_PWR_JP_DEFAULT},
 100         {6, 2437, WLAN_TX_PWR_JP_DEFAULT},
 101         {7, 2442, WLAN_TX_PWR_JP_DEFAULT},
 102         {8, 2447, WLAN_TX_PWR_JP_DEFAULT},
 103         {9, 2452, WLAN_TX_PWR_JP_DEFAULT},
 104         {10, 2457, WLAN_TX_PWR_JP_DEFAULT},
 105         {11, 2462, WLAN_TX_PWR_JP_DEFAULT},
 106         {12, 2467, WLAN_TX_PWR_JP_DEFAULT},
 107         {13, 2472, WLAN_TX_PWR_JP_DEFAULT},
 108         {14, 2484, WLAN_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          sizeof(channel_freq_power_US_BG) / sizeof(struct chan_freq_power),
 127          }
 128         ,
 129         {0x20,                  /*CANADA IC */
 130          channel_freq_power_US_BG,
 131          sizeof(channel_freq_power_US_BG) / sizeof(struct chan_freq_power),
 132          }
 133         ,
 134         {0x30, /*EU*/ channel_freq_power_EU_BG,
 135          sizeof(channel_freq_power_EU_BG) / sizeof(struct chan_freq_power),
 136          }
 137         ,
 138         {0x31, /*SPAIN*/ channel_freq_power_SPN_BG,
 139          sizeof(channel_freq_power_SPN_BG) / sizeof(struct chan_freq_power),
 140          }
 141         ,
 142         {0x32, /*FRANCE*/ channel_freq_power_FR_BG,
 143          sizeof(channel_freq_power_FR_BG) / sizeof(struct chan_freq_power),
 144          }
 145         ,
 146         {0x40, /*JAPAN*/ channel_freq_power_JPN_BG,
 147          sizeof(channel_freq_power_JPN_BG) / sizeof(struct chan_freq_power),
 148          }
 149         ,
 150 /*Add new region here */
 151 };
 152
 153 /**
 154  * the table to keep region code
 155  */
 156 u16 libertas_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 libertas_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 libertas_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 libertas_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 libertas_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         libertas_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 libertas_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         libertas_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 libertas_add_rtap(wlan_private *priv);
 251 void libertas_remove_rtap(wlan_private *priv);
 252
 253 /**
 254  * Get function for sysfs attribute rtap
 255  */
 256 static ssize_t libertas_rtap_get(struct device * dev,
 257                 struct device_attribute *attr, char * buf)
 258 {
 259         wlan_private *priv = (wlan_private *) (to_net_dev(dev))->priv;
 260         wlan_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 libertas_rtap_set(struct device * dev,
 268                 struct device_attribute *attr, const char * buf, size_t count)
 269 {
 270         int monitor_mode;
 271         wlan_private *priv = (wlan_private *) (to_net_dev(dev))->priv;
 272         wlan_adapter *adapter = priv->adapter;
 273
 274         sscanf(buf, "%x", &monitor_mode);
 275         if (monitor_mode != WLAN_MONITOR_OFF) {
 276                 if(adapter->monitormode == monitor_mode)
 277                         return strlen(buf);
 278                 if (adapter->monitormode == WLAN_MONITOR_OFF) {
 279                         if (adapter->mode == IW_MODE_INFRA)
 280                                 libertas_send_deauthentication(priv);
 281                         else if (adapter->mode == IW_MODE_ADHOC)
 282                                 libertas_stop_adhoc_network(priv);
 283                         libertas_add_rtap(priv);
 284                 }
 285                 adapter->monitormode = monitor_mode;
 286         }
 287
 288         else {
 289                 if(adapter->monitormode == WLAN_MONITOR_OFF)
 290                         return strlen(buf);
 291                 adapter->monitormode = WLAN_MONITOR_OFF;
 292                 libertas_remove_rtap(priv);
 293                 netif_wake_queue(priv->dev);
 294                 netif_wake_queue(priv->mesh_dev);
 295         }
 296
 297         libertas_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  * libertas_rtap attribute to be exported per mshX interface
 305  * through sysfs (/sys/class/net/mshX/libertas-rtap)
 306  */
 307 static DEVICE_ATTR(libertas_rtap, 0644, libertas_rtap_get,
 308                 libertas_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, libertas_anycast_get, libertas_anycast_set);
 315
 316 static ssize_t libertas_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         libertas_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 libertas_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         wlan_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 = libertas_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                 libertas_autostart_enabled_get, libertas_autostart_enabled_set);
 354
 355 static struct attribute *libertas_mesh_sysfs_entries[] = {
 356         &dev_attr_anycast_mask.attr,
 357         &dev_attr_autostart_enabled.attr,
 358         NULL,
 359 };
 360
 361 static struct attribute_group libertas_mesh_attr_group = {
 362         .attrs = libertas_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         wlan_private *priv = (wlan_private *) dev->priv;
 379         wlan_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 libertas_dev_open(struct net_device *dev)
 401 {
 402         wlan_private *priv = (wlan_private *) dev->priv;
 403         wlan_adapter *adapter = priv->adapter;
 404
 405         lbs_deb_enter(LBS_DEB_NET);
 406
 407         priv->open = 1;
 408
 409         if (adapter->connect_status == LIBERTAS_CONNECTED) {
 410                 netif_carrier_on(priv->dev);
 411                 if (priv->mesh_dev)
 412                         netif_carrier_on(priv->mesh_dev);
 413         } else {
 414                 netif_carrier_off(priv->dev);
 415                 if (priv->mesh_dev)
 416                         netif_carrier_off(priv->mesh_dev);
 417         }
 418
 419         lbs_deb_leave(LBS_DEB_NET);
 420         return 0;
 421 }
 422 /**
 423  *  @brief This function opens the mshX interface
 424  *
 425  *  @param dev     A pointer to net_device structure
 426  *  @return        0
 427  */
 428 static int libertas_mesh_open(struct net_device *dev)
 429 {
 430         wlan_private *priv = (wlan_private *) dev->priv ;
 431
 432         if (pre_open_check(dev) == -1)
 433                 return -1;
 434         priv->mesh_open = 1 ;
 435         netif_wake_queue(priv->mesh_dev);
 436         if (priv->infra_open == 0)
 437                 return libertas_dev_open(priv->dev) ;
 438         return 0;
 439 }
 440
 441 /**
 442  *  @brief This function opens the ethX interface
 443  *
 444  *  @param dev     A pointer to net_device structure
 445  *  @return        0
 446  */
 447 static int libertas_open(struct net_device *dev)
 448 {
 449         wlan_private *priv = (wlan_private *) dev->priv ;
 450
 451         if(pre_open_check(dev) == -1)
 452                 return -1;
 453         priv->infra_open = 1 ;
 454         netif_wake_queue(priv->dev);
 455         if (priv->open == 0)
 456                 return libertas_dev_open(priv->dev) ;
 457         return 0;
 458 }
 459
 460 static int libertas_dev_close(struct net_device *dev)
 461 {
 462         wlan_private *priv = dev->priv;
 463
 464         lbs_deb_enter(LBS_DEB_NET);
 465
 466         netif_carrier_off(priv->dev);
 467         priv->open = 0;
 468
 469         lbs_deb_leave(LBS_DEB_NET);
 470         return 0;
 471 }
 472
 473 /**
 474  *  @brief This function closes the mshX interface
 475  *
 476  *  @param dev     A pointer to net_device structure
 477  *  @return        0
 478  */
 479 static int libertas_mesh_close(struct net_device *dev)
 480 {
 481         wlan_private *priv = (wlan_private *) (dev->priv);
 482
 483         priv->mesh_open = 0;
 484         netif_stop_queue(priv->mesh_dev);
 485         if (priv->infra_open == 0)
 486                 return libertas_dev_close(dev);
 487         else
 488                 return 0;
 489 }
 490
 491 /**
 492  *  @brief This function closes the ethX interface
 493  *
 494  *  @param dev     A pointer to net_device structure
 495  *  @return        0
 496  */
 497 static int libertas_close(struct net_device *dev)
 498 {
 499         wlan_private *priv = (wlan_private *) dev->priv;
 500
 501         netif_stop_queue(dev);
 502         priv->infra_open = 0;
 503         if (priv->mesh_open == 0)
 504                 return libertas_dev_close(dev);
 505         else
 506                 return 0;
 507 }
 508
 509
 510 static int libertas_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 511 {
 512         int ret = 0;
 513         wlan_private *priv = dev->priv;
 514
 515         lbs_deb_enter(LBS_DEB_NET);
 516
 517         if (priv->dnld_sent || priv->adapter->TxLockFlag) {
 518                 priv->stats.tx_dropped++;
 519                 goto done;
 520         }
 521
 522         netif_stop_queue(priv->dev);
 523         if (priv->mesh_dev)
 524                 netif_stop_queue(priv->mesh_dev);
 525
 526         if (libertas_process_tx(priv, skb) == 0)
 527                 dev->trans_start = jiffies;
 528 done:
 529         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 530         return ret;
 531 }
 532
 533 /**
 534  * @brief Mark mesh packets and handover them to libertas_hard_start_xmit
 535  *
 536  */
 537 static int libertas_mesh_pre_start_xmit(struct sk_buff *skb,
 538                 struct net_device *dev)
 539 {
 540         wlan_private *priv = dev->priv;
 541         int ret;
 542
 543         lbs_deb_enter(LBS_DEB_MESH);
 544         if(priv->adapter->monitormode != WLAN_MONITOR_OFF) {
 545                 netif_stop_queue(dev);
 546                 return -EOPNOTSUPP;
 547         }
 548
 549         SET_MESH_FRAME(skb);
 550
 551         ret = libertas_hard_start_xmit(skb, priv->dev);
 552         lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
 553         return ret;
 554 }
 555
 556 /**
 557  * @brief Mark non-mesh packets and handover them to libertas_hard_start_xmit
 558  *
 559  */
 560 static int libertas_pre_start_xmit(struct sk_buff *skb, struct net_device *dev)
 561 {
 562         wlan_private *priv = dev->priv;
 563         int ret;
 564
 565         lbs_deb_enter(LBS_DEB_NET);
 566
 567         if(priv->adapter->monitormode != WLAN_MONITOR_OFF) {
 568                 netif_stop_queue(dev);
 569                 return -EOPNOTSUPP;
 570         }
 571
 572         UNSET_MESH_FRAME(skb);
 573
 574         ret = libertas_hard_start_xmit(skb, dev);
 575         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 576         return ret;
 577 }
 578
 579 static void libertas_tx_timeout(struct net_device *dev)
 580 {
 581         wlan_private *priv = (wlan_private *) dev->priv;
 582
 583         lbs_deb_enter(LBS_DEB_TX);
 584
 585         lbs_pr_err("tx watch dog timeout\n");
 586
 587         priv->dnld_sent = DNLD_RES_RECEIVED;
 588         dev->trans_start = jiffies;
 589
 590         if (priv->adapter->currenttxskb) {
 591                 if (priv->adapter->monitormode != WLAN_MONITOR_OFF) {
 592                         /* If we are here, we have not received feedback from
 593                            the previous packet.  Assume TX_FAIL and move on. */
 594                         priv->adapter->eventcause = 0x01000000;
 595                         libertas_send_tx_feedback(priv);
 596                 } else
 597                         wake_up_interruptible(&priv->waitq);
 598         } else if (priv->adapter->connect_status == LIBERTAS_CONNECTED) {
 599                 netif_wake_queue(priv->dev);
 600                 if (priv->mesh_dev)
 601                         netif_wake_queue(priv->mesh_dev);
 602         }
 603
 604         lbs_deb_leave(LBS_DEB_TX);
 605 }
 606
 607 /**
 608  *  @brief This function returns the network statistics
 609  *
 610  *  @param dev     A pointer to wlan_private structure
 611  *  @return        A pointer to net_device_stats structure
 612  */
 613 static struct net_device_stats *libertas_get_stats(struct net_device *dev)
 614 {
 615         wlan_private *priv = (wlan_private *) dev->priv;
 616
 617         return &priv->stats;
 618 }
 619
 620 static int libertas_set_mac_address(struct net_device *dev, void *addr)
 621 {
 622         int ret = 0;
 623         wlan_private *priv = (wlan_private *) dev->priv;
 624         wlan_adapter *adapter = priv->adapter;
 625         struct sockaddr *phwaddr = addr;
 626
 627         lbs_deb_enter(LBS_DEB_NET);
 628
 629         /* In case it was called from the mesh device */
 630         dev = priv->dev ;
 631
 632         memset(adapter->current_addr, 0, ETH_ALEN);
 633
 634         /* dev->dev_addr is 8 bytes */
 635         lbs_deb_hex(LBS_DEB_NET, "dev->dev_addr", dev->dev_addr, ETH_ALEN);
 636
 637         lbs_deb_hex(LBS_DEB_NET, "addr", phwaddr->sa_data, ETH_ALEN);
 638         memcpy(adapter->current_addr, phwaddr->sa_data, ETH_ALEN);
 639
 640         ret = libertas_prepare_and_send_command(priv, CMD_802_11_MAC_ADDRESS,
 641                                     CMD_ACT_SET,
 642                                     CMD_OPTION_WAITFORRSP, 0, NULL);
 643
 644         if (ret) {
 645                 lbs_deb_net("set MAC address failed\n");
 646                 ret = -1;
 647                 goto done;
 648         }
 649
 650         lbs_deb_hex(LBS_DEB_NET, "adapter->macaddr", adapter->current_addr, ETH_ALEN);
 651         memcpy(dev->dev_addr, adapter->current_addr, ETH_ALEN);
 652         if (priv->mesh_dev)
 653                 memcpy(priv->mesh_dev->dev_addr, adapter->current_addr, ETH_ALEN);
 654
 655 done:
 656         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 657         return ret;
 658 }
 659
 660 static int libertas_copy_multicast_address(wlan_adapter * adapter,
 661                                      struct net_device *dev)
 662 {
 663         int i = 0;
 664         struct dev_mc_list *mcptr = dev->mc_list;
 665
 666         for (i = 0; i < dev->mc_count; i++) {
 667                 memcpy(&adapter->multicastlist[i], mcptr->dmi_addr, ETH_ALEN);
 668                 mcptr = mcptr->next;
 669         }
 670
 671         return i;
 672
 673 }
 674
 675 static void libertas_set_multicast_list(struct net_device *dev)
 676 {
 677         wlan_private *priv = dev->priv;
 678         wlan_adapter *adapter = priv->adapter;
 679         int oldpacketfilter;
 680
 681         lbs_deb_enter(LBS_DEB_NET);
 682
 683         oldpacketfilter = adapter->currentpacketfilter;
 684
 685         if (dev->flags & IFF_PROMISC) {
 686                 lbs_deb_net("enable promiscuous mode\n");
 687                 adapter->currentpacketfilter |=
 688                     CMD_ACT_MAC_PROMISCUOUS_ENABLE;
 689                 adapter->currentpacketfilter &=
 690                     ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
 691                       CMD_ACT_MAC_MULTICAST_ENABLE);
 692         } else {
 693                 /* Multicast */
 694                 adapter->currentpacketfilter &=
 695                     ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
 696
 697                 if (dev->flags & IFF_ALLMULTI || dev->mc_count >
 698                     MRVDRV_MAX_MULTICAST_LIST_SIZE) {
 699                         lbs_deb_net( "enabling all multicast\n");
 700                         adapter->currentpacketfilter |=
 701                             CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
 702                         adapter->currentpacketfilter &=
 703                             ~CMD_ACT_MAC_MULTICAST_ENABLE;
 704                 } else {
 705                         adapter->currentpacketfilter &=
 706                             ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
 707
 708                         if (!dev->mc_count) {
 709                                 lbs_deb_net("no multicast addresses, "
 710                                        "disabling multicast\n");
 711                                 adapter->currentpacketfilter &=
 712                                     ~CMD_ACT_MAC_MULTICAST_ENABLE;
 713                         } else {
 714                                 int i;
 715
 716                                 adapter->currentpacketfilter |=
 717                                     CMD_ACT_MAC_MULTICAST_ENABLE;
 718
 719                                 adapter->nr_of_multicastmacaddr =
 720                                     libertas_copy_multicast_address(adapter, dev);
 721
 722                                 lbs_deb_net("multicast addresses: %d\n",
 723                                        dev->mc_count);
 724
 725                                 for (i = 0; i < dev->mc_count; i++) {
 726                                         lbs_deb_net("Multicast address %d:"
 727                                                MAC_FMT "\n", i,
 728                                                adapter->multicastlist[i][0],
 729                                                adapter->multicastlist[i][1],
 730                                                adapter->multicastlist[i][2],
 731                                                adapter->multicastlist[i][3],
 732                                                adapter->multicastlist[i][4],
 733                                                adapter->multicastlist[i][5]);
 734                                 }
 735                                 /* send multicast addresses to firmware */
 736                                 libertas_prepare_and_send_command(priv,
 737                                                       CMD_MAC_MULTICAST_ADR,
 738                                                       CMD_ACT_SET, 0, 0,
 739                                                       NULL);
 740                         }
 741                 }
 742         }
 743
 744         if (adapter->currentpacketfilter != oldpacketfilter) {
 745                 libertas_set_mac_packet_filter(priv);
 746         }
 747
 748         lbs_deb_leave(LBS_DEB_NET);
 749 }
 750
 751 /**
 752  *  @brief This function handles the major jobs in the WLAN driver.
 753  *  It handles all events generated by firmware, RX data received
 754  *  from firmware and TX data sent from kernel.
 755  *
 756  *  @param data    A pointer to wlan_thread structure
 757  *  @return        0
 758  */
 759 static int libertas_thread(void *data)
 760 {
 761         struct net_device *dev = data;
 762         wlan_private *priv = dev->priv;
 763         wlan_adapter *adapter = priv->adapter;
 764         wait_queue_t wait;
 765         u8 ireg = 0;
 766
 767         lbs_deb_enter(LBS_DEB_THREAD);
 768
 769         init_waitqueue_entry(&wait, current);
 770
 771         set_freezable();
 772         for (;;) {
 773                 lbs_deb_thread( "main-thread 111: intcounter=%d "
 774                        "currenttxskb=%p dnld_sent=%d\n",
 775                        adapter->intcounter,
 776                        adapter->currenttxskb, priv->dnld_sent);
 777
 778                 add_wait_queue(&priv->waitq, &wait);
 779                 set_current_state(TASK_INTERRUPTIBLE);
 780                 spin_lock_irq(&adapter->driver_lock);
 781                 if ((adapter->psstate == PS_STATE_SLEEP) ||
 782                     (!adapter->intcounter
 783                      && (priv->dnld_sent || adapter->cur_cmd ||
 784                          list_empty(&adapter->cmdpendingq)))) {
 785                         lbs_deb_thread(
 786                                "main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
 787                                adapter->connect_status, adapter->intcounter,
 788                                adapter->psmode, adapter->psstate);
 789                         spin_unlock_irq(&adapter->driver_lock);
 790                         schedule();
 791                 } else
 792                         spin_unlock_irq(&adapter->driver_lock);
 793
 794                 lbs_deb_thread(
 795                        "main-thread 222 (waking up): intcounter=%d currenttxskb=%p "
 796                        "dnld_sent=%d\n", adapter->intcounter,
 797                        adapter->currenttxskb, priv->dnld_sent);
 798
 799                 set_current_state(TASK_RUNNING);
 800                 remove_wait_queue(&priv->waitq, &wait);
 801                 try_to_freeze();
 802
 803                 lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p "
 804                        "dnld_sent=%d\n",
 805                        adapter->intcounter,
 806                        adapter->currenttxskb, priv->dnld_sent);
 807
 808                 if (kthread_should_stop()
 809                     || adapter->surpriseremoved) {
 810                         lbs_deb_thread(
 811                                "main-thread: break from main thread: surpriseremoved=0x%x\n",
 812                                adapter->surpriseremoved);
 813                         break;
 814                 }
 815
 816
 817                 spin_lock_irq(&adapter->driver_lock);
 818                 if (adapter->intcounter) {
 819                         u8 int_status;
 820                         adapter->intcounter = 0;
 821                         int_status = priv->hw_get_int_status(priv, &ireg);
 822
 823                         if (int_status) {
 824                                 lbs_deb_thread(
 825                                        "main-thread: reading HOST_INT_STATUS_REG failed\n");
 826                                 spin_unlock_irq(&adapter->driver_lock);
 827                                 continue;
 828                         }
 829                         adapter->hisregcpy |= ireg;
 830                 }
 831
 832                 lbs_deb_thread("main-thread 444: intcounter=%d currenttxskb=%p "
 833                        "dnld_sent=%d\n",
 834                        adapter->intcounter,
 835                        adapter->currenttxskb, priv->dnld_sent);
 836
 837                 /* command response? */
 838                 if (adapter->hisregcpy & MRVDRV_CMD_UPLD_RDY) {
 839                         lbs_deb_thread("main-thread: cmd response ready\n");
 840
 841                         adapter->hisregcpy &= ~MRVDRV_CMD_UPLD_RDY;
 842                         spin_unlock_irq(&adapter->driver_lock);
 843                         libertas_process_rx_command(priv);
 844                         spin_lock_irq(&adapter->driver_lock);
 845                 }
 846
 847                 /* Any Card Event */
 848                 if (adapter->hisregcpy & MRVDRV_CARDEVENT) {
 849                         lbs_deb_thread("main-thread: Card Event Activity\n");
 850
 851                         adapter->hisregcpy &= ~MRVDRV_CARDEVENT;
 852
 853                         if (priv->hw_read_event_cause(priv)) {
 854                                 lbs_pr_alert(
 855                                        "main-thread: hw_read_event_cause failed\n");
 856                                 spin_unlock_irq(&adapter->driver_lock);
 857                                 continue;
 858                         }
 859                         spin_unlock_irq(&adapter->driver_lock);
 860                         libertas_process_event(priv);
 861                 } else
 862                         spin_unlock_irq(&adapter->driver_lock);
 863
 864                 /* Check if we need to confirm Sleep Request received previously */
 865                 if (adapter->psstate == PS_STATE_PRE_SLEEP) {
 866                         if (!priv->dnld_sent && !adapter->cur_cmd) {
 867                                 if (adapter->connect_status ==
 868                                     LIBERTAS_CONNECTED) {
 869                                         lbs_deb_thread(
 870                                                "main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p "
 871                                                "dnld_sent=%d cur_cmd=%p, confirm now\n",
 872                                                adapter->intcounter,
 873                                                adapter->currenttxskb,
 874                                                priv->dnld_sent,
 875                                                adapter->cur_cmd);
 876
 877                                         libertas_ps_confirm_sleep(priv,
 878                                                        (u16) adapter->psmode);
 879                                 } else {
 880                                         /* workaround for firmware sending
 881                                          * deauth/linkloss event immediately
 882                                          * after sleep request, remove this
 883                                          * after firmware fixes it
 884                                          */
 885                                         adapter->psstate = PS_STATE_AWAKE;
 886                                         lbs_pr_alert(
 887                                                "main-thread: ignore PS_SleepConfirm in non-connected state\n");
 888                                 }
 889                         }
 890                 }
 891
 892                 /* The PS state is changed during processing of Sleep Request
 893                  * event above
 894                  */
 895                 if ((priv->adapter->psstate == PS_STATE_SLEEP) ||
 896                     (priv->adapter->psstate == PS_STATE_PRE_SLEEP))
 897                         continue;
 898
 899                 /* Execute the next command */
 900                 if (!priv->dnld_sent && !priv->adapter->cur_cmd)
 901                         libertas_execute_next_command(priv);
 902
 903                 /* Wake-up command waiters which can't sleep in
 904                  * libertas_prepare_and_send_command
 905                  */
 906                 if (!adapter->nr_cmd_pending)
 907                         wake_up_all(&adapter->cmd_pending);
 908
 909                 libertas_tx_runqueue(priv);
 910         }
 911
 912         del_timer(&adapter->command_timer);
 913         adapter->nr_cmd_pending = 0;
 914         wake_up_all(&adapter->cmd_pending);
 915
 916         lbs_deb_leave(LBS_DEB_THREAD);
 917         return 0;
 918 }
 919
 920 /**
 921  *  @brief This function downloads firmware image, gets
 922  *  HW spec from firmware and set basic parameters to
 923  *  firmware.
 924  *
 925  *  @param priv    A pointer to wlan_private structure
 926  *  @return        0 or -1
 927  */
 928 static int wlan_setup_firmware(wlan_private * priv)
 929 {
 930         int ret = -1;
 931         wlan_adapter *adapter = priv->adapter;
 932         struct cmd_ds_mesh_access mesh_access;
 933
 934         lbs_deb_enter(LBS_DEB_FW);
 935
 936         /*
 937          * Read MAC address from HW
 938          */
 939         memset(adapter->current_addr, 0xff, ETH_ALEN);
 940
 941         ret = libertas_prepare_and_send_command(priv, CMD_GET_HW_SPEC,
 942                                     0, CMD_OPTION_WAITFORRSP, 0, NULL);
 943
 944         if (ret) {
 945                 ret = -1;
 946                 goto done;
 947         }
 948
 949         libertas_set_mac_packet_filter(priv);
 950
 951         /* Get the supported Data rates */
 952         ret = libertas_prepare_and_send_command(priv, CMD_802_11_DATA_RATE,
 953                                     CMD_ACT_GET_TX_RATE,
 954                                     CMD_OPTION_WAITFORRSP, 0, NULL);
 955
 956         if (ret) {
 957                 ret = -1;
 958                 goto done;
 959         }
 960
 961         /* Disable mesh autostart */
 962         if (priv->mesh_dev) {
 963                 memset(&mesh_access, 0, sizeof(mesh_access));
 964                 mesh_access.data[0] = cpu_to_le32(0);
 965                 ret = libertas_prepare_and_send_command(priv,
 966                                 CMD_MESH_ACCESS,
 967                                 CMD_ACT_MESH_SET_AUTOSTART_ENABLED,
 968                                 CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
 969                 if (ret) {
 970                         ret = -1;
 971                         goto done;
 972                 }
 973                 priv->mesh_autostart_enabled = 0;
 974         }
 975
 976        /* Set the boot2 version in firmware */
 977        ret = libertas_prepare_and_send_command(priv, CMD_SET_BOOT2_VER,
 978                                    0, CMD_OPTION_WAITFORRSP, 0, NULL);
 979
 980         ret = 0;
 981 done:
 982         lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
 983         return ret;
 984 }
 985
 986 /**
 987  *  This function handles the timeout of command sending.
 988  *  It will re-send the same command again.
 989  */
 990 static void command_timer_fn(unsigned long data)
 991 {
 992         wlan_private *priv = (wlan_private *)data;
 993         wlan_adapter *adapter = priv->adapter;
 994         struct cmd_ctrl_node *ptempnode;
 995         struct cmd_ds_command *cmd;
 996         unsigned long flags;
 997
 998         ptempnode = adapter->cur_cmd;
 999         if (ptempnode == NULL) {
1000                 lbs_deb_fw("ptempnode empty\n");
1001                 return;
1002         }
1003
1004         cmd = (struct cmd_ds_command *)ptempnode->bufvirtualaddr;
1005         if (!cmd) {
1006                 lbs_deb_fw("cmd is NULL\n");
1007                 return;
1008         }
1009
1010         lbs_deb_fw("command_timer_fn fired, cmd %x\n", cmd->command);
1011
1012         if (!adapter->fw_ready)
1013                 return;
1014
1015         spin_lock_irqsave(&adapter->driver_lock, flags);
1016         adapter->cur_cmd = NULL;
1017         spin_unlock_irqrestore(&adapter->driver_lock, flags);
1018
1019         lbs_deb_fw("re-sending same command because of timeout\n");
1020         libertas_queue_cmd(adapter, ptempnode, 0);
1021
1022         wake_up_interruptible(&priv->waitq);
1023
1024         return;
1025 }
1026
1027 static int libertas_init_adapter(wlan_private * priv)
1028 {
1029         wlan_adapter *adapter = priv->adapter;
1030         size_t bufsize;
1031         int i, ret = 0;
1032
1033         /* Allocate buffer to store the BSSID list */
1034         bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
1035         adapter->networks = kzalloc(bufsize, GFP_KERNEL);
1036         if (!adapter->networks) {
1037                 lbs_pr_err("Out of memory allocating beacons\n");
1038                 ret = -1;
1039                 goto out;
1040         }
1041
1042         /* Initialize scan result lists */
1043         INIT_LIST_HEAD(&adapter->network_free_list);
1044         INIT_LIST_HEAD(&adapter->network_list);
1045         for (i = 0; i < MAX_NETWORK_COUNT; i++) {
1046                 list_add_tail(&adapter->networks[i].list,
1047                               &adapter->network_free_list);
1048         }
1049
1050         adapter->libertas_ps_confirm_sleep.seqnum = cpu_to_le16(++adapter->seqnum);
1051         adapter->libertas_ps_confirm_sleep.command =
1052             cpu_to_le16(CMD_802_11_PS_MODE);
1053         adapter->libertas_ps_confirm_sleep.size =
1054             cpu_to_le16(sizeof(struct PS_CMD_ConfirmSleep));
1055         adapter->libertas_ps_confirm_sleep.action =
1056             cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
1057
1058         memset(adapter->current_addr, 0xff, ETH_ALEN);
1059
1060         adapter->connect_status = LIBERTAS_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 = WLAN802_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         adapter->nr_cmd_pending = 0;
1086
1087         /* Allocate the command buffers */
1088         if (libertas_allocate_cmd_buffer(priv)) {
1089                 lbs_pr_err("Out of memory allocating command buffers\n");
1090                 ret = -1;
1091         }
1092
1093 out:
1094         return ret;
1095 }
1096
1097 static void libertas_free_adapter(wlan_private * priv)
1098 {
1099         wlan_adapter *adapter = priv->adapter;
1100
1101         if (!adapter) {
1102                 lbs_deb_fw("why double free adapter?\n");
1103                 return;
1104         }
1105
1106         lbs_deb_fw("free command buffer\n");
1107         libertas_free_cmd_buffer(priv);
1108
1109         lbs_deb_fw("free command_timer\n");
1110         del_timer(&adapter->command_timer);
1111
1112         lbs_deb_fw("free scan results table\n");
1113         kfree(adapter->networks);
1114         adapter->networks = NULL;
1115
1116         /* Free the adapter object itself */
1117         lbs_deb_fw("free adapter\n");
1118         kfree(adapter);
1119         priv->adapter = NULL;
1120 }
1121
1122 /**
1123  * @brief This function adds the card. it will probe the
1124  * card, allocate the wlan_priv and initialize the device.
1125  *
1126  *  @param card    A pointer to card
1127  *  @return        A pointer to wlan_private structure
1128  */
1129 wlan_private *libertas_add_card(void *card, struct device *dmdev)
1130 {
1131         struct net_device *dev = NULL;
1132         wlan_private *priv = NULL;
1133
1134         lbs_deb_enter(LBS_DEB_NET);
1135
1136         /* Allocate an Ethernet device and register it */
1137         if (!(dev = alloc_etherdev(sizeof(wlan_private)))) {
1138                 lbs_pr_err("init ethX device failed\n");
1139                 goto done;
1140         }
1141         priv = dev->priv;
1142
1143         /* allocate buffer for wlan_adapter */
1144         if (!(priv->adapter = kzalloc(sizeof(wlan_adapter), GFP_KERNEL))) {
1145                 lbs_pr_err("allocate buffer for wlan_adapter failed\n");
1146                 goto err_kzalloc;
1147         }
1148
1149         if (libertas_init_adapter(priv)) {
1150                 lbs_pr_err("failed to initialize adapter structure.\n");
1151                 goto err_init_adapter;
1152         }
1153
1154         priv->dev = dev;
1155         priv->card = card;
1156         priv->mesh_open = 0;
1157         priv->infra_open = 0;
1158         priv->hotplug_device = dmdev;
1159
1160         /* Setup the OS Interface to our functions */
1161         dev->open = libertas_open;
1162         dev->hard_start_xmit = libertas_pre_start_xmit;
1163         dev->stop = libertas_close;
1164         dev->set_mac_address = libertas_set_mac_address;
1165         dev->tx_timeout = libertas_tx_timeout;
1166         dev->get_stats = libertas_get_stats;
1167         dev->watchdog_timeo = 5 * HZ;
1168         dev->ethtool_ops = &libertas_ethtool_ops;
1169 #ifdef  WIRELESS_EXT
1170         dev->wireless_handlers = (struct iw_handler_def *)&libertas_handler_def;
1171 #endif
1172 #define NETIF_F_DYNALLOC 16
1173         dev->features |= NETIF_F_DYNALLOC;
1174         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1175         dev->set_multicast_list = libertas_set_multicast_list;
1176
1177         SET_NETDEV_DEV(dev, dmdev);
1178
1179         priv->rtap_net_dev = NULL;
1180         if (device_create_file(dmdev, &dev_attr_libertas_rtap))
1181                 goto err_init_adapter;
1182
1183         lbs_deb_thread("Starting main thread...\n");
1184         init_waitqueue_head(&priv->waitq);
1185         priv->main_thread = kthread_run(libertas_thread, dev, "libertas_main");
1186         if (IS_ERR(priv->main_thread)) {
1187                 lbs_deb_thread("Error creating main thread.\n");
1188                 goto err_kthread_run;
1189         }
1190
1191         priv->work_thread = create_singlethread_workqueue("libertas_worker");
1192         INIT_DELAYED_WORK(&priv->assoc_work, libertas_association_worker);
1193         INIT_DELAYED_WORK(&priv->scan_work, libertas_scan_worker);
1194         INIT_WORK(&priv->sync_channel, libertas_sync_channel);
1195
1196         goto done;
1197
1198 err_kthread_run:
1199         device_remove_file(dmdev, &dev_attr_libertas_rtap);
1200
1201 err_init_adapter:
1202         libertas_free_adapter(priv);
1203
1204 err_kzalloc:
1205         free_netdev(dev);
1206         priv = NULL;
1207
1208 done:
1209         lbs_deb_leave_args(LBS_DEB_NET, "priv %p", priv);
1210         return priv;
1211 }
1212 EXPORT_SYMBOL_GPL(libertas_add_card);
1213
1214
1215 int libertas_remove_card(wlan_private *priv)
1216 {
1217         wlan_adapter *adapter = priv->adapter;
1218         struct net_device *dev = priv->dev;
1219         union iwreq_data wrqu;
1220
1221         lbs_deb_enter(LBS_DEB_MAIN);
1222
1223         libertas_remove_rtap(priv);
1224
1225         dev = priv->dev;
1226         device_remove_file(priv->hotplug_device, &dev_attr_libertas_rtap);
1227
1228         cancel_delayed_work(&priv->scan_work);
1229         cancel_delayed_work(&priv->assoc_work);
1230         destroy_workqueue(priv->work_thread);
1231
1232         if (adapter->psmode == WLAN802_11POWERMODEMAX_PSP) {
1233                 adapter->psmode = WLAN802_11POWERMODECAM;
1234                 libertas_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1235         }
1236
1237         memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1238         wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1239         wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1240
1241         /* Stop the thread servicing the interrupts */
1242         adapter->surpriseremoved = 1;
1243         kthread_stop(priv->main_thread);
1244
1245         libertas_free_adapter(priv);
1246
1247         priv->dev = NULL;
1248         free_netdev(dev);
1249
1250         lbs_deb_leave(LBS_DEB_MAIN);
1251         return 0;
1252 }
1253 EXPORT_SYMBOL_GPL(libertas_remove_card);
1254
1255
1256 int libertas_start_card(wlan_private *priv)
1257 {
1258         struct net_device *dev = priv->dev;
1259         int ret = -1;
1260
1261         lbs_deb_enter(LBS_DEB_MAIN);
1262
1263         /* poke the firmware */
1264         ret = wlan_setup_firmware(priv);
1265         if (ret)
1266                 goto done;
1267
1268         /* init 802.11d */
1269         libertas_init_11d(priv);
1270
1271         if (register_netdev(dev)) {
1272                 lbs_pr_err("cannot register ethX device\n");
1273                 goto done;
1274         }
1275
1276         libertas_debugfs_init_one(priv, dev);
1277
1278         lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
1279
1280         ret = 0;
1281
1282 done:
1283         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1284         return ret;
1285 }
1286 EXPORT_SYMBOL_GPL(libertas_start_card);
1287
1288
1289 int libertas_stop_card(wlan_private *priv)
1290 {
1291         struct net_device *dev = priv->dev;
1292         int ret = -1;
1293         struct cmd_ctrl_node *cmdnode;
1294         unsigned long flags;
1295
1296         lbs_deb_enter(LBS_DEB_MAIN);
1297
1298         netif_stop_queue(priv->dev);
1299         netif_carrier_off(priv->dev);
1300
1301         libertas_debugfs_remove_one(priv);
1302
1303         /* Flush pending command nodes */
1304         spin_lock_irqsave(&priv->adapter->driver_lock, flags);
1305         list_for_each_entry(cmdnode, &priv->adapter->cmdpendingq, list) {
1306                 cmdnode->cmdwaitqwoken = 1;
1307                 wake_up_interruptible(&cmdnode->cmdwait_q);
1308         }
1309         spin_unlock_irqrestore(&priv->adapter->driver_lock, flags);
1310
1311         unregister_netdev(dev);
1312
1313         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1314         return ret;
1315 }
1316 EXPORT_SYMBOL_GPL(libertas_stop_card);
1317
1318
1319 /**
1320  * @brief This function adds mshX interface
1321  *
1322  *  @param priv    A pointer to the wlan_private structure
1323  *  @return        0 if successful, -X otherwise
1324  */
1325 int libertas_add_mesh(wlan_private *priv, struct device *dev)
1326 {
1327         struct net_device *mesh_dev = NULL;
1328         int ret = 0;
1329
1330         lbs_deb_enter(LBS_DEB_MESH);
1331
1332         /* Allocate a virtual mesh device */
1333         if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
1334                 lbs_deb_mesh("init mshX device failed\n");
1335                 ret = -ENOMEM;
1336                 goto done;
1337         }
1338         mesh_dev->priv = priv;
1339         priv->mesh_dev = mesh_dev;
1340
1341         mesh_dev->open = libertas_mesh_open;
1342         mesh_dev->hard_start_xmit = libertas_mesh_pre_start_xmit;
1343         mesh_dev->stop = libertas_mesh_close;
1344         mesh_dev->get_stats = libertas_get_stats;
1345         mesh_dev->set_mac_address = libertas_set_mac_address;
1346         mesh_dev->ethtool_ops = &libertas_ethtool_ops;
1347         memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
1348                         sizeof(priv->dev->dev_addr));
1349
1350         SET_NETDEV_DEV(priv->mesh_dev, dev);
1351
1352 #ifdef  WIRELESS_EXT
1353         mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
1354 #endif
1355 #define NETIF_F_DYNALLOC 16
1356
1357         /* Register virtual mesh interface */
1358         ret = register_netdev(mesh_dev);
1359         if (ret) {
1360                 lbs_pr_err("cannot register mshX virtual interface\n");
1361                 goto err_free;
1362         }
1363
1364         ret = sysfs_create_group(&(mesh_dev->dev.kobj), &libertas_mesh_attr_group);
1365         if (ret)
1366                 goto err_unregister;
1367
1368         /* Everything successful */
1369         ret = 0;
1370         goto done;
1371
1372 err_unregister:
1373         unregister_netdev(mesh_dev);
1374
1375 err_free:
1376         free_netdev(mesh_dev);
1377
1378 done:
1379         lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1380         return ret;
1381 }
1382 EXPORT_SYMBOL_GPL(libertas_add_mesh);
1383
1384
1385 void libertas_remove_mesh(wlan_private *priv)
1386 {
1387         struct net_device *mesh_dev;
1388
1389         lbs_deb_enter(LBS_DEB_MAIN);
1390
1391         if (!priv)
1392                 goto out;
1393
1394         mesh_dev = priv->mesh_dev;
1395
1396         netif_stop_queue(mesh_dev);
1397         netif_carrier_off(priv->mesh_dev);
1398
1399         sysfs_remove_group(&(mesh_dev->dev.kobj), &libertas_mesh_attr_group);
1400         unregister_netdev(mesh_dev);
1401
1402         priv->mesh_dev = NULL ;
1403         free_netdev(mesh_dev);
1404
1405 out:
1406         lbs_deb_leave(LBS_DEB_MAIN);
1407 }
1408 EXPORT_SYMBOL_GPL(libertas_remove_mesh);
1409
1410 /**
1411  *  @brief This function finds the CFP in
1412  *  region_cfp_table based on region and band parameter.
1413  *
1414  *  @param region  The region code
1415  *  @param band    The band
1416  *  @param cfp_no  A pointer to CFP number
1417  *  @return        A pointer to CFP
1418  */
1419 struct chan_freq_power *libertas_get_region_cfp_table(u8 region, u8 band, int *cfp_no)
1420 {
1421         int i, end;
1422
1423         lbs_deb_enter(LBS_DEB_MAIN);
1424
1425         end = sizeof(region_cfp_table)/sizeof(struct region_cfp_table);
1426
1427         for (i = 0; i < end ; i++) {
1428                 lbs_deb_main("region_cfp_table[i].region=%d\n",
1429                         region_cfp_table[i].region);
1430                 if (region_cfp_table[i].region == region) {
1431                         *cfp_no = region_cfp_table[i].cfp_no_BG;
1432                         lbs_deb_leave(LBS_DEB_MAIN);
1433                         return region_cfp_table[i].cfp_BG;
1434                 }
1435         }
1436
1437         lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1438         return NULL;
1439 }
1440
1441 int libertas_set_regiontable(wlan_private * priv, u8 region, u8 band)
1442 {
1443         wlan_adapter *adapter = priv->adapter;
1444         int ret = 0;
1445         int i = 0;
1446
1447         struct chan_freq_power *cfp;
1448         int cfp_no;
1449
1450         lbs_deb_enter(LBS_DEB_MAIN);
1451
1452         memset(adapter->region_channel, 0, sizeof(adapter->region_channel));
1453
1454         {
1455                 cfp = libertas_get_region_cfp_table(region, band, &cfp_no);
1456                 if (cfp != NULL) {
1457                         adapter->region_channel[i].nrcfp = cfp_no;
1458                         adapter->region_channel[i].CFP = cfp;
1459                 } else {
1460                         lbs_deb_main("wrong region code %#x in band B/G\n",
1461                                region);
1462                         ret = -1;
1463                         goto out;
1464                 }
1465                 adapter->region_channel[i].valid = 1;
1466                 adapter->region_channel[i].region = region;
1467                 adapter->region_channel[i].band = band;
1468                 i++;
1469         }
1470 out:
1471         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1472         return ret;
1473 }
1474
1475 /**
1476  *  @brief This function handles the interrupt. it will change PS
1477  *  state if applicable. it will wake up main_thread to handle
1478  *  the interrupt event as well.
1479  *
1480  *  @param dev     A pointer to net_device structure
1481  *  @return        n/a
1482  */
1483 void libertas_interrupt(struct net_device *dev)
1484 {
1485         wlan_private *priv = dev->priv;
1486
1487         lbs_deb_enter(LBS_DEB_THREAD);
1488
1489         lbs_deb_thread("libertas_interrupt: intcounter=%d\n",
1490                priv->adapter->intcounter);
1491
1492         priv->adapter->intcounter++;
1493
1494         if (priv->adapter->psstate == PS_STATE_SLEEP) {
1495                 priv->adapter->psstate = PS_STATE_AWAKE;
1496                 netif_wake_queue(dev);
1497                 if (priv->mesh_dev)
1498                         netif_wake_queue(priv->mesh_dev);
1499         }
1500
1501         wake_up_interruptible(&priv->waitq);
1502
1503         lbs_deb_leave(LBS_DEB_THREAD);
1504 }
1505 EXPORT_SYMBOL_GPL(libertas_interrupt);
1506
1507 int libertas_reset_device(wlan_private *priv)
1508 {
1509         int ret;
1510
1511         lbs_deb_enter(LBS_DEB_MAIN);
1512         ret = libertas_prepare_and_send_command(priv, CMD_802_11_RESET,
1513                                     CMD_ACT_HALT, 0, 0, NULL);
1514         msleep_interruptible(10);
1515
1516         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1517         return ret;
1518 }
1519 EXPORT_SYMBOL_GPL(libertas_reset_device);
1520
1521 static int libertas_init_module(void)
1522 {
1523         lbs_deb_enter(LBS_DEB_MAIN);
1524         libertas_debugfs_init();
1525         lbs_deb_leave(LBS_DEB_MAIN);
1526         return 0;
1527 }
1528
1529 static void libertas_exit_module(void)
1530 {
1531         lbs_deb_enter(LBS_DEB_MAIN);
1532
1533         libertas_debugfs_remove();
1534
1535         lbs_deb_leave(LBS_DEB_MAIN);
1536 }
1537
1538 /*
1539  * rtap interface support fuctions
1540  */
1541
1542 static int libertas_rtap_open(struct net_device *dev)
1543 {
1544         netif_carrier_off(dev);
1545         netif_stop_queue(dev);
1546         return 0;
1547 }
1548
1549 static int libertas_rtap_stop(struct net_device *dev)
1550 {
1551         return 0;
1552 }
1553
1554 static int libertas_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1555 {
1556         netif_stop_queue(dev);
1557         return -EOPNOTSUPP;
1558 }
1559
1560 static struct net_device_stats *libertas_rtap_get_stats(struct net_device *dev)
1561 {
1562         wlan_private *priv = dev->priv;
1563         return &priv->ieee->stats;
1564 }
1565
1566
1567 void libertas_remove_rtap(wlan_private *priv)
1568 {
1569         if (priv->rtap_net_dev == NULL)
1570                 return;
1571         unregister_netdev(priv->rtap_net_dev);
1572         free_ieee80211(priv->rtap_net_dev);
1573         priv->rtap_net_dev = NULL;
1574 }
1575
1576 int libertas_add_rtap(wlan_private *priv)
1577 {
1578         int rc = 0;
1579
1580         if (priv->rtap_net_dev)
1581                 return -EPERM;
1582
1583         priv->rtap_net_dev = alloc_ieee80211(0);
1584         if (priv->rtap_net_dev == NULL)
1585                 return -ENOMEM;
1586
1587
1588         priv->ieee = netdev_priv(priv->rtap_net_dev);
1589
1590         strcpy(priv->rtap_net_dev->name, "rtap%d");
1591
1592         priv->rtap_net_dev->type = ARPHRD_IEEE80211_RADIOTAP;
1593         priv->rtap_net_dev->open = libertas_rtap_open;
1594         priv->rtap_net_dev->stop = libertas_rtap_stop;
1595         priv->rtap_net_dev->get_stats = libertas_rtap_get_stats;
1596         priv->rtap_net_dev->hard_start_xmit = libertas_rtap_hard_start_xmit;
1597         priv->rtap_net_dev->set_multicast_list = libertas_set_multicast_list;
1598         priv->rtap_net_dev->priv = priv;
1599
1600         priv->ieee->iw_mode = IW_MODE_MONITOR;
1601
1602         rc = register_netdev(priv->rtap_net_dev);
1603         if (rc) {
1604                 free_ieee80211(priv->rtap_net_dev);
1605                 priv->rtap_net_dev = NULL;
1606                 return rc;
1607         }
1608
1609         return 0;
1610 }
1611
1612
1613 module_init(libertas_init_module);
1614 module_exit(libertas_exit_module);
1615
1616 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1617 MODULE_AUTHOR("Marvell International Ltd.");
1618 MODULE_LICENSE("GPL");