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          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 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         DECLARE_MAC_BUF(mac);
 681
 682         lbs_deb_enter(LBS_DEB_NET);
 683
 684         oldpacketfilter = adapter->currentpacketfilter;
 685
 686         if (dev->flags & IFF_PROMISC) {
 687                 lbs_deb_net("enable promiscuous mode\n");
 688                 adapter->currentpacketfilter |=
 689                     CMD_ACT_MAC_PROMISCUOUS_ENABLE;
 690                 adapter->currentpacketfilter &=
 691                     ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
 692                       CMD_ACT_MAC_MULTICAST_ENABLE);
 693         } else {
 694                 /* Multicast */
 695                 adapter->currentpacketfilter &=
 696                     ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
 697
 698                 if (dev->flags & IFF_ALLMULTI || dev->mc_count >
 699                     MRVDRV_MAX_MULTICAST_LIST_SIZE) {
 700                         lbs_deb_net( "enabling all multicast\n");
 701                         adapter->currentpacketfilter |=
 702                             CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
 703                         adapter->currentpacketfilter &=
 704                             ~CMD_ACT_MAC_MULTICAST_ENABLE;
 705                 } else {
 706                         adapter->currentpacketfilter &=
 707                             ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
 708
 709                         if (!dev->mc_count) {
 710                                 lbs_deb_net("no multicast addresses, "
 711                                        "disabling multicast\n");
 712                                 adapter->currentpacketfilter &=
 713                                     ~CMD_ACT_MAC_MULTICAST_ENABLE;
 714                         } else {
 715                                 int i;
 716
 717                                 adapter->currentpacketfilter |=
 718                                     CMD_ACT_MAC_MULTICAST_ENABLE;
 719
 720                                 adapter->nr_of_multicastmacaddr =
 721                                     libertas_copy_multicast_address(adapter, dev);
 722
 723                                 lbs_deb_net("multicast addresses: %d\n",
 724                                        dev->mc_count);
 725
 726                                 for (i = 0; i < dev->mc_count; i++) {
 727                                         lbs_deb_net("Multicast address %d:%s\n",
 728                                                i, print_mac(mac,
 729                                                adapter->multicastlist[i]));
 730                                 }
 731                                 /* send multicast addresses to firmware */
 732                                 libertas_prepare_and_send_command(priv,
 733                                                       CMD_MAC_MULTICAST_ADR,
 734                                                       CMD_ACT_SET, 0, 0,
 735                                                       NULL);
 736                         }
 737                 }
 738         }
 739
 740         if (adapter->currentpacketfilter != oldpacketfilter) {
 741                 libertas_set_mac_packet_filter(priv);
 742         }
 743
 744         lbs_deb_leave(LBS_DEB_NET);
 745 }
 746
 747 /**
 748  *  @brief This function handles the major jobs in the WLAN driver.
 749  *  It handles all events generated by firmware, RX data received
 750  *  from firmware and TX data sent from kernel.
 751  *
 752  *  @param data    A pointer to wlan_thread structure
 753  *  @return        0
 754  */
 755 static int libertas_thread(void *data)
 756 {
 757         struct net_device *dev = data;
 758         wlan_private *priv = dev->priv;
 759         wlan_adapter *adapter = priv->adapter;
 760         wait_queue_t wait;
 761         u8 ireg = 0;
 762
 763         lbs_deb_enter(LBS_DEB_THREAD);
 764
 765         init_waitqueue_entry(&wait, current);
 766
 767         set_freezable();
 768         for (;;) {
 769                 lbs_deb_thread( "main-thread 111: intcounter=%d "
 770                        "currenttxskb=%p dnld_sent=%d\n",
 771                        adapter->intcounter,
 772                        adapter->currenttxskb, priv->dnld_sent);
 773
 774                 add_wait_queue(&priv->waitq, &wait);
 775                 set_current_state(TASK_INTERRUPTIBLE);
 776                 spin_lock_irq(&adapter->driver_lock);
 777                 if ((adapter->psstate == PS_STATE_SLEEP) ||
 778                     (!adapter->intcounter
 779                      && (priv->dnld_sent || adapter->cur_cmd ||
 780                          list_empty(&adapter->cmdpendingq)))) {
 781                         lbs_deb_thread(
 782                                "main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
 783                                adapter->connect_status, adapter->intcounter,
 784                                adapter->psmode, adapter->psstate);
 785                         spin_unlock_irq(&adapter->driver_lock);
 786                         schedule();
 787                 } else
 788                         spin_unlock_irq(&adapter->driver_lock);
 789
 790                 lbs_deb_thread(
 791                        "main-thread 222 (waking up): intcounter=%d currenttxskb=%p "
 792                        "dnld_sent=%d\n", adapter->intcounter,
 793                        adapter->currenttxskb, priv->dnld_sent);
 794
 795                 set_current_state(TASK_RUNNING);
 796                 remove_wait_queue(&priv->waitq, &wait);
 797                 try_to_freeze();
 798
 799                 lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p "
 800                        "dnld_sent=%d\n",
 801                        adapter->intcounter,
 802                        adapter->currenttxskb, priv->dnld_sent);
 803
 804                 if (kthread_should_stop()
 805                     || adapter->surpriseremoved) {
 806                         lbs_deb_thread(
 807                                "main-thread: break from main thread: surpriseremoved=0x%x\n",
 808                                adapter->surpriseremoved);
 809                         break;
 810                 }
 811
 812
 813                 spin_lock_irq(&adapter->driver_lock);
 814                 if (adapter->intcounter) {
 815                         u8 int_status;
 816                         adapter->intcounter = 0;
 817                         int_status = priv->hw_get_int_status(priv, &ireg);
 818
 819                         if (int_status) {
 820                                 lbs_deb_thread(
 821                                        "main-thread: reading HOST_INT_STATUS_REG failed\n");
 822                                 spin_unlock_irq(&adapter->driver_lock);
 823                                 continue;
 824                         }
 825                         adapter->hisregcpy |= ireg;
 826                 }
 827
 828                 lbs_deb_thread("main-thread 444: intcounter=%d currenttxskb=%p "
 829                        "dnld_sent=%d\n",
 830                        adapter->intcounter,
 831                        adapter->currenttxskb, priv->dnld_sent);
 832
 833                 /* command response? */
 834                 if (adapter->hisregcpy & MRVDRV_CMD_UPLD_RDY) {
 835                         lbs_deb_thread("main-thread: cmd response ready\n");
 836
 837                         adapter->hisregcpy &= ~MRVDRV_CMD_UPLD_RDY;
 838                         spin_unlock_irq(&adapter->driver_lock);
 839                         libertas_process_rx_command(priv);
 840                         spin_lock_irq(&adapter->driver_lock);
 841                 }
 842
 843                 /* Any Card Event */
 844                 if (adapter->hisregcpy & MRVDRV_CARDEVENT) {
 845                         lbs_deb_thread("main-thread: Card Event Activity\n");
 846
 847                         adapter->hisregcpy &= ~MRVDRV_CARDEVENT;
 848
 849                         if (priv->hw_read_event_cause(priv)) {
 850                                 lbs_pr_alert(
 851                                        "main-thread: hw_read_event_cause failed\n");
 852                                 spin_unlock_irq(&adapter->driver_lock);
 853                                 continue;
 854                         }
 855                         spin_unlock_irq(&adapter->driver_lock);
 856                         libertas_process_event(priv);
 857                 } else
 858                         spin_unlock_irq(&adapter->driver_lock);
 859
 860                 /* Check if we need to confirm Sleep Request received previously */
 861                 if (adapter->psstate == PS_STATE_PRE_SLEEP) {
 862                         if (!priv->dnld_sent && !adapter->cur_cmd) {
 863                                 if (adapter->connect_status ==
 864                                     LIBERTAS_CONNECTED) {
 865                                         lbs_deb_thread(
 866                                                "main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p "
 867                                                "dnld_sent=%d cur_cmd=%p, confirm now\n",
 868                                                adapter->intcounter,
 869                                                adapter->currenttxskb,
 870                                                priv->dnld_sent,
 871                                                adapter->cur_cmd);
 872
 873                                         libertas_ps_confirm_sleep(priv,
 874                                                        (u16) adapter->psmode);
 875                                 } else {
 876                                         /* workaround for firmware sending
 877                                          * deauth/linkloss event immediately
 878                                          * after sleep request, remove this
 879                                          * after firmware fixes it
 880                                          */
 881                                         adapter->psstate = PS_STATE_AWAKE;
 882                                         lbs_pr_alert(
 883                                                "main-thread: ignore PS_SleepConfirm in non-connected state\n");
 884                                 }
 885                         }
 886                 }
 887
 888                 /* The PS state is changed during processing of Sleep Request
 889                  * event above
 890                  */
 891                 if ((priv->adapter->psstate == PS_STATE_SLEEP) ||
 892                     (priv->adapter->psstate == PS_STATE_PRE_SLEEP))
 893                         continue;
 894
 895                 /* Execute the next command */
 896                 if (!priv->dnld_sent && !priv->adapter->cur_cmd)
 897                         libertas_execute_next_command(priv);
 898
 899                 /* Wake-up command waiters which can't sleep in
 900                  * libertas_prepare_and_send_command
 901                  */
 902                 if (!adapter->nr_cmd_pending)
 903                         wake_up_all(&adapter->cmd_pending);
 904
 905                 libertas_tx_runqueue(priv);
 906         }
 907
 908         del_timer(&adapter->command_timer);
 909         adapter->nr_cmd_pending = 0;
 910         wake_up_all(&adapter->cmd_pending);
 911
 912         lbs_deb_leave(LBS_DEB_THREAD);
 913         return 0;
 914 }
 915
 916 /**
 917  *  @brief This function downloads firmware image, gets
 918  *  HW spec from firmware and set basic parameters to
 919  *  firmware.
 920  *
 921  *  @param priv    A pointer to wlan_private structure
 922  *  @return        0 or -1
 923  */
 924 static int wlan_setup_firmware(wlan_private * priv)
 925 {
 926         int ret = -1;
 927         wlan_adapter *adapter = priv->adapter;
 928         struct cmd_ds_mesh_access mesh_access;
 929
 930         lbs_deb_enter(LBS_DEB_FW);
 931
 932         /*
 933          * Read MAC address from HW
 934          */
 935         memset(adapter->current_addr, 0xff, ETH_ALEN);
 936
 937         ret = libertas_prepare_and_send_command(priv, CMD_GET_HW_SPEC,
 938                                     0, CMD_OPTION_WAITFORRSP, 0, NULL);
 939
 940         if (ret) {
 941                 ret = -1;
 942                 goto done;
 943         }
 944
 945         libertas_set_mac_packet_filter(priv);
 946
 947         /* Get the supported Data rates */
 948         ret = libertas_prepare_and_send_command(priv, CMD_802_11_DATA_RATE,
 949                                     CMD_ACT_GET_TX_RATE,
 950                                     CMD_OPTION_WAITFORRSP, 0, NULL);
 951
 952         if (ret) {
 953                 ret = -1;
 954                 goto done;
 955         }
 956
 957         /* Disable mesh autostart */
 958         if (priv->mesh_dev) {
 959                 memset(&mesh_access, 0, sizeof(mesh_access));
 960                 mesh_access.data[0] = cpu_to_le32(0);
 961                 ret = libertas_prepare_and_send_command(priv,
 962                                 CMD_MESH_ACCESS,
 963                                 CMD_ACT_MESH_SET_AUTOSTART_ENABLED,
 964                                 CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
 965                 if (ret) {
 966                         ret = -1;
 967                         goto done;
 968                 }
 969                 priv->mesh_autostart_enabled = 0;
 970         }
 971
 972        /* Set the boot2 version in firmware */
 973        ret = libertas_prepare_and_send_command(priv, CMD_SET_BOOT2_VER,
 974                                    0, CMD_OPTION_WAITFORRSP, 0, NULL);
 975
 976         ret = 0;
 977 done:
 978         lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
 979         return ret;
 980 }
 981
 982 /**
 983  *  This function handles the timeout of command sending.
 984  *  It will re-send the same command again.
 985  */
 986 static void command_timer_fn(unsigned long data)
 987 {
 988         wlan_private *priv = (wlan_private *)data;
 989         wlan_adapter *adapter = priv->adapter;
 990         struct cmd_ctrl_node *ptempnode;
 991         struct cmd_ds_command *cmd;
 992         unsigned long flags;
 993
 994         ptempnode = adapter->cur_cmd;
 995         if (ptempnode == NULL) {
 996                 lbs_deb_fw("ptempnode empty\n");
 997                 return;
 998         }
 999
1000         cmd = (struct cmd_ds_command *)ptempnode->bufvirtualaddr;
1001         if (!cmd) {
1002                 lbs_deb_fw("cmd is NULL\n");
1003                 return;
1004         }
1005
1006         lbs_deb_fw("command_timer_fn fired, cmd %x\n", cmd->command);
1007
1008         if (!adapter->fw_ready)
1009                 return;
1010
1011         spin_lock_irqsave(&adapter->driver_lock, flags);
1012         adapter->cur_cmd = NULL;
1013         spin_unlock_irqrestore(&adapter->driver_lock, flags);
1014
1015         lbs_deb_fw("re-sending same command because of timeout\n");
1016         libertas_queue_cmd(adapter, ptempnode, 0);
1017
1018         wake_up_interruptible(&priv->waitq);
1019
1020         return;
1021 }
1022
1023 static int libertas_init_adapter(wlan_private * priv)
1024 {
1025         wlan_adapter *adapter = priv->adapter;
1026         size_t bufsize;
1027         int i, ret = 0;
1028
1029         /* Allocate buffer to store the BSSID list */
1030         bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
1031         adapter->networks = kzalloc(bufsize, GFP_KERNEL);
1032         if (!adapter->networks) {
1033                 lbs_pr_err("Out of memory allocating beacons\n");
1034                 ret = -1;
1035                 goto out;
1036         }
1037
1038         /* Initialize scan result lists */
1039         INIT_LIST_HEAD(&adapter->network_free_list);
1040         INIT_LIST_HEAD(&adapter->network_list);
1041         for (i = 0; i < MAX_NETWORK_COUNT; i++) {
1042                 list_add_tail(&adapter->networks[i].list,
1043                               &adapter->network_free_list);
1044         }
1045
1046         adapter->libertas_ps_confirm_sleep.seqnum = cpu_to_le16(++adapter->seqnum);
1047         adapter->libertas_ps_confirm_sleep.command =
1048             cpu_to_le16(CMD_802_11_PS_MODE);
1049         adapter->libertas_ps_confirm_sleep.size =
1050             cpu_to_le16(sizeof(struct PS_CMD_ConfirmSleep));
1051         adapter->libertas_ps_confirm_sleep.action =
1052             cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
1053
1054         memset(adapter->current_addr, 0xff, ETH_ALEN);
1055
1056         adapter->connect_status = LIBERTAS_DISCONNECTED;
1057         adapter->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
1058         adapter->mode = IW_MODE_INFRA;
1059         adapter->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;
1060         adapter->currentpacketfilter = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
1061         adapter->radioon = RADIO_ON;
1062         adapter->auto_rate = 1;
1063         adapter->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
1064         adapter->psmode = WLAN802_11POWERMODECAM;
1065         adapter->psstate = PS_STATE_FULL_POWER;
1066
1067         mutex_init(&adapter->lock);
1068
1069         memset(&adapter->tx_queue_ps, 0, NR_TX_QUEUE*sizeof(struct sk_buff*));
1070         adapter->tx_queue_idx = 0;
1071         spin_lock_init(&adapter->txqueue_lock);
1072
1073         setup_timer(&adapter->command_timer, command_timer_fn,
1074                     (unsigned long)priv);
1075
1076         INIT_LIST_HEAD(&adapter->cmdfreeq);
1077         INIT_LIST_HEAD(&adapter->cmdpendingq);
1078
1079         spin_lock_init(&adapter->driver_lock);
1080         init_waitqueue_head(&adapter->cmd_pending);
1081         adapter->nr_cmd_pending = 0;
1082
1083         /* Allocate the command buffers */
1084         if (libertas_allocate_cmd_buffer(priv)) {
1085                 lbs_pr_err("Out of memory allocating command buffers\n");
1086                 ret = -1;
1087         }
1088
1089 out:
1090         return ret;
1091 }
1092
1093 static void libertas_free_adapter(wlan_private * priv)
1094 {
1095         wlan_adapter *adapter = priv->adapter;
1096
1097         if (!adapter) {
1098                 lbs_deb_fw("why double free adapter?\n");
1099                 return;
1100         }
1101
1102         lbs_deb_fw("free command buffer\n");
1103         libertas_free_cmd_buffer(priv);
1104
1105         lbs_deb_fw("free command_timer\n");
1106         del_timer(&adapter->command_timer);
1107
1108         lbs_deb_fw("free scan results table\n");
1109         kfree(adapter->networks);
1110         adapter->networks = NULL;
1111
1112         /* Free the adapter object itself */
1113         lbs_deb_fw("free adapter\n");
1114         kfree(adapter);
1115         priv->adapter = NULL;
1116 }
1117
1118 /**
1119  * @brief This function adds the card. it will probe the
1120  * card, allocate the wlan_priv and initialize the device.
1121  *
1122  *  @param card    A pointer to card
1123  *  @return        A pointer to wlan_private structure
1124  */
1125 wlan_private *libertas_add_card(void *card, struct device *dmdev)
1126 {
1127         struct net_device *dev = NULL;
1128         wlan_private *priv = NULL;
1129
1130         lbs_deb_enter(LBS_DEB_NET);
1131
1132         /* Allocate an Ethernet device and register it */
1133         if (!(dev = alloc_etherdev(sizeof(wlan_private)))) {
1134                 lbs_pr_err("init ethX device failed\n");
1135                 goto done;
1136         }
1137         priv = dev->priv;
1138
1139         /* allocate buffer for wlan_adapter */
1140         if (!(priv->adapter = kzalloc(sizeof(wlan_adapter), GFP_KERNEL))) {
1141                 lbs_pr_err("allocate buffer for wlan_adapter failed\n");
1142                 goto err_kzalloc;
1143         }
1144
1145         if (libertas_init_adapter(priv)) {
1146                 lbs_pr_err("failed to initialize adapter structure.\n");
1147                 goto err_init_adapter;
1148         }
1149
1150         priv->dev = dev;
1151         priv->card = card;
1152         priv->mesh_open = 0;
1153         priv->infra_open = 0;
1154         priv->hotplug_device = dmdev;
1155
1156         /* Setup the OS Interface to our functions */
1157         dev->open = libertas_open;
1158         dev->hard_start_xmit = libertas_pre_start_xmit;
1159         dev->stop = libertas_close;
1160         dev->set_mac_address = libertas_set_mac_address;
1161         dev->tx_timeout = libertas_tx_timeout;
1162         dev->get_stats = libertas_get_stats;
1163         dev->watchdog_timeo = 5 * HZ;
1164         dev->ethtool_ops = &libertas_ethtool_ops;
1165 #ifdef  WIRELESS_EXT
1166         dev->wireless_handlers = (struct iw_handler_def *)&libertas_handler_def;
1167 #endif
1168         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1169         dev->set_multicast_list = libertas_set_multicast_list;
1170
1171         SET_NETDEV_DEV(dev, dmdev);
1172
1173         priv->rtap_net_dev = NULL;
1174         if (device_create_file(dmdev, &dev_attr_libertas_rtap))
1175                 goto err_init_adapter;
1176
1177         lbs_deb_thread("Starting main thread...\n");
1178         init_waitqueue_head(&priv->waitq);
1179         priv->main_thread = kthread_run(libertas_thread, dev, "libertas_main");
1180         if (IS_ERR(priv->main_thread)) {
1181                 lbs_deb_thread("Error creating main thread.\n");
1182                 goto err_kthread_run;
1183         }
1184
1185         priv->work_thread = create_singlethread_workqueue("libertas_worker");
1186         INIT_DELAYED_WORK(&priv->assoc_work, libertas_association_worker);
1187         INIT_DELAYED_WORK(&priv->scan_work, libertas_scan_worker);
1188         INIT_WORK(&priv->sync_channel, libertas_sync_channel);
1189
1190         goto done;
1191
1192 err_kthread_run:
1193         device_remove_file(dmdev, &dev_attr_libertas_rtap);
1194
1195 err_init_adapter:
1196         libertas_free_adapter(priv);
1197
1198 err_kzalloc:
1199         free_netdev(dev);
1200         priv = NULL;
1201
1202 done:
1203         lbs_deb_leave_args(LBS_DEB_NET, "priv %p", priv);
1204         return priv;
1205 }
1206 EXPORT_SYMBOL_GPL(libertas_add_card);
1207
1208
1209 int libertas_remove_card(wlan_private *priv)
1210 {
1211         wlan_adapter *adapter = priv->adapter;
1212         struct net_device *dev = priv->dev;
1213         union iwreq_data wrqu;
1214
1215         lbs_deb_enter(LBS_DEB_MAIN);
1216
1217         libertas_remove_rtap(priv);
1218
1219         dev = priv->dev;
1220         device_remove_file(priv->hotplug_device, &dev_attr_libertas_rtap);
1221
1222         cancel_delayed_work(&priv->scan_work);
1223         cancel_delayed_work(&priv->assoc_work);
1224         destroy_workqueue(priv->work_thread);
1225
1226         if (adapter->psmode == WLAN802_11POWERMODEMAX_PSP) {
1227                 adapter->psmode = WLAN802_11POWERMODECAM;
1228                 libertas_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1229         }
1230
1231         memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1232         wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1233         wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1234
1235         /* Stop the thread servicing the interrupts */
1236         adapter->surpriseremoved = 1;
1237         kthread_stop(priv->main_thread);
1238
1239         libertas_free_adapter(priv);
1240
1241         priv->dev = NULL;
1242         free_netdev(dev);
1243
1244         lbs_deb_leave(LBS_DEB_MAIN);
1245         return 0;
1246 }
1247 EXPORT_SYMBOL_GPL(libertas_remove_card);
1248
1249
1250 int libertas_start_card(wlan_private *priv)
1251 {
1252         struct net_device *dev = priv->dev;
1253         int ret = -1;
1254
1255         lbs_deb_enter(LBS_DEB_MAIN);
1256
1257         /* poke the firmware */
1258         ret = wlan_setup_firmware(priv);
1259         if (ret)
1260                 goto done;
1261
1262         /* init 802.11d */
1263         libertas_init_11d(priv);
1264
1265         if (register_netdev(dev)) {
1266                 lbs_pr_err("cannot register ethX device\n");
1267                 goto done;
1268         }
1269
1270         libertas_debugfs_init_one(priv, dev);
1271
1272         lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
1273
1274         ret = 0;
1275
1276 done:
1277         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1278         return ret;
1279 }
1280 EXPORT_SYMBOL_GPL(libertas_start_card);
1281
1282
1283 int libertas_stop_card(wlan_private *priv)
1284 {
1285         struct net_device *dev = priv->dev;
1286         int ret = -1;
1287         struct cmd_ctrl_node *cmdnode;
1288         unsigned long flags;
1289
1290         lbs_deb_enter(LBS_DEB_MAIN);
1291
1292         netif_stop_queue(priv->dev);
1293         netif_carrier_off(priv->dev);
1294
1295         libertas_debugfs_remove_one(priv);
1296
1297         /* Flush pending command nodes */
1298         spin_lock_irqsave(&priv->adapter->driver_lock, flags);
1299         list_for_each_entry(cmdnode, &priv->adapter->cmdpendingq, list) {
1300                 cmdnode->cmdwaitqwoken = 1;
1301                 wake_up_interruptible(&cmdnode->cmdwait_q);
1302         }
1303         spin_unlock_irqrestore(&priv->adapter->driver_lock, flags);
1304
1305         unregister_netdev(dev);
1306
1307         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1308         return ret;
1309 }
1310 EXPORT_SYMBOL_GPL(libertas_stop_card);
1311
1312
1313 /**
1314  * @brief This function adds mshX interface
1315  *
1316  *  @param priv    A pointer to the wlan_private structure
1317  *  @return        0 if successful, -X otherwise
1318  */
1319 int libertas_add_mesh(wlan_private *priv, struct device *dev)
1320 {
1321         struct net_device *mesh_dev = NULL;
1322         int ret = 0;
1323
1324         lbs_deb_enter(LBS_DEB_MESH);
1325
1326         /* Allocate a virtual mesh device */
1327         if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
1328                 lbs_deb_mesh("init mshX device failed\n");
1329                 ret = -ENOMEM;
1330                 goto done;
1331         }
1332         mesh_dev->priv = priv;
1333         priv->mesh_dev = mesh_dev;
1334
1335         mesh_dev->open = libertas_mesh_open;
1336         mesh_dev->hard_start_xmit = libertas_mesh_pre_start_xmit;
1337         mesh_dev->stop = libertas_mesh_close;
1338         mesh_dev->get_stats = libertas_get_stats;
1339         mesh_dev->set_mac_address = libertas_set_mac_address;
1340         mesh_dev->ethtool_ops = &libertas_ethtool_ops;
1341         memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
1342                         sizeof(priv->dev->dev_addr));
1343
1344         SET_NETDEV_DEV(priv->mesh_dev, dev);
1345
1346 #ifdef  WIRELESS_EXT
1347         mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
1348 #endif
1349         /* Register virtual mesh interface */
1350         ret = register_netdev(mesh_dev);
1351         if (ret) {
1352                 lbs_pr_err("cannot register mshX virtual interface\n");
1353                 goto err_free;
1354         }
1355
1356         ret = sysfs_create_group(&(mesh_dev->dev.kobj), &libertas_mesh_attr_group);
1357         if (ret)
1358                 goto err_unregister;
1359
1360         /* Everything successful */
1361         ret = 0;
1362         goto done;
1363
1364 err_unregister:
1365         unregister_netdev(mesh_dev);
1366
1367 err_free:
1368         free_netdev(mesh_dev);
1369
1370 done:
1371         lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1372         return ret;
1373 }
1374 EXPORT_SYMBOL_GPL(libertas_add_mesh);
1375
1376
1377 void libertas_remove_mesh(wlan_private *priv)
1378 {
1379         struct net_device *mesh_dev;
1380
1381         lbs_deb_enter(LBS_DEB_MAIN);
1382
1383         if (!priv)
1384                 goto out;
1385
1386         mesh_dev = priv->mesh_dev;
1387
1388         netif_stop_queue(mesh_dev);
1389         netif_carrier_off(priv->mesh_dev);
1390
1391         sysfs_remove_group(&(mesh_dev->dev.kobj), &libertas_mesh_attr_group);
1392         unregister_netdev(mesh_dev);
1393
1394         priv->mesh_dev = NULL ;
1395         free_netdev(mesh_dev);
1396
1397 out:
1398         lbs_deb_leave(LBS_DEB_MAIN);
1399 }
1400 EXPORT_SYMBOL_GPL(libertas_remove_mesh);
1401
1402 /**
1403  *  @brief This function finds the CFP in
1404  *  region_cfp_table based on region and band parameter.
1405  *
1406  *  @param region  The region code
1407  *  @param band    The band
1408  *  @param cfp_no  A pointer to CFP number
1409  *  @return        A pointer to CFP
1410  */
1411 struct chan_freq_power *libertas_get_region_cfp_table(u8 region, u8 band, int *cfp_no)
1412 {
1413         int i, end;
1414
1415         lbs_deb_enter(LBS_DEB_MAIN);
1416
1417         end = ARRAY_SIZE(region_cfp_table);
1418
1419         for (i = 0; i < end ; i++) {
1420                 lbs_deb_main("region_cfp_table[i].region=%d\n",
1421                         region_cfp_table[i].region);
1422                 if (region_cfp_table[i].region == region) {
1423                         *cfp_no = region_cfp_table[i].cfp_no_BG;
1424                         lbs_deb_leave(LBS_DEB_MAIN);
1425                         return region_cfp_table[i].cfp_BG;
1426                 }
1427         }
1428
1429         lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1430         return NULL;
1431 }
1432
1433 int libertas_set_regiontable(wlan_private * priv, u8 region, u8 band)
1434 {
1435         wlan_adapter *adapter = priv->adapter;
1436         int ret = 0;
1437         int i = 0;
1438
1439         struct chan_freq_power *cfp;
1440         int cfp_no;
1441
1442         lbs_deb_enter(LBS_DEB_MAIN);
1443
1444         memset(adapter->region_channel, 0, sizeof(adapter->region_channel));
1445
1446         {
1447                 cfp = libertas_get_region_cfp_table(region, band, &cfp_no);
1448                 if (cfp != NULL) {
1449                         adapter->region_channel[i].nrcfp = cfp_no;
1450                         adapter->region_channel[i].CFP = cfp;
1451                 } else {
1452                         lbs_deb_main("wrong region code %#x in band B/G\n",
1453                                region);
1454                         ret = -1;
1455                         goto out;
1456                 }
1457                 adapter->region_channel[i].valid = 1;
1458                 adapter->region_channel[i].region = region;
1459                 adapter->region_channel[i].band = band;
1460                 i++;
1461         }
1462 out:
1463         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1464         return ret;
1465 }
1466
1467 /**
1468  *  @brief This function handles the interrupt. it will change PS
1469  *  state if applicable. it will wake up main_thread to handle
1470  *  the interrupt event as well.
1471  *
1472  *  @param dev     A pointer to net_device structure
1473  *  @return        n/a
1474  */
1475 void libertas_interrupt(struct net_device *dev)
1476 {
1477         wlan_private *priv = dev->priv;
1478
1479         lbs_deb_enter(LBS_DEB_THREAD);
1480
1481         lbs_deb_thread("libertas_interrupt: intcounter=%d\n",
1482                priv->adapter->intcounter);
1483
1484         priv->adapter->intcounter++;
1485
1486         if (priv->adapter->psstate == PS_STATE_SLEEP) {
1487                 priv->adapter->psstate = PS_STATE_AWAKE;
1488                 netif_wake_queue(dev);
1489                 if (priv->mesh_dev)
1490                         netif_wake_queue(priv->mesh_dev);
1491         }
1492
1493         wake_up_interruptible(&priv->waitq);
1494
1495         lbs_deb_leave(LBS_DEB_THREAD);
1496 }
1497 EXPORT_SYMBOL_GPL(libertas_interrupt);
1498
1499 int libertas_reset_device(wlan_private *priv)
1500 {
1501         int ret;
1502
1503         lbs_deb_enter(LBS_DEB_MAIN);
1504         ret = libertas_prepare_and_send_command(priv, CMD_802_11_RESET,
1505                                     CMD_ACT_HALT, 0, 0, NULL);
1506         msleep_interruptible(10);
1507
1508         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1509         return ret;
1510 }
1511 EXPORT_SYMBOL_GPL(libertas_reset_device);
1512
1513 static int libertas_init_module(void)
1514 {
1515         lbs_deb_enter(LBS_DEB_MAIN);
1516         libertas_debugfs_init();
1517         lbs_deb_leave(LBS_DEB_MAIN);
1518         return 0;
1519 }
1520
1521 static void libertas_exit_module(void)
1522 {
1523         lbs_deb_enter(LBS_DEB_MAIN);
1524
1525         libertas_debugfs_remove();
1526
1527         lbs_deb_leave(LBS_DEB_MAIN);
1528 }
1529
1530 /*
1531  * rtap interface support fuctions
1532  */
1533
1534 static int libertas_rtap_open(struct net_device *dev)
1535 {
1536         netif_carrier_off(dev);
1537         netif_stop_queue(dev);
1538         return 0;
1539 }
1540
1541 static int libertas_rtap_stop(struct net_device *dev)
1542 {
1543         return 0;
1544 }
1545
1546 static int libertas_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1547 {
1548         netif_stop_queue(dev);
1549         return -EOPNOTSUPP;
1550 }
1551
1552 static struct net_device_stats *libertas_rtap_get_stats(struct net_device *dev)
1553 {
1554         wlan_private *priv = dev->priv;
1555         return &priv->ieee->stats;
1556 }
1557
1558
1559 void libertas_remove_rtap(wlan_private *priv)
1560 {
1561         if (priv->rtap_net_dev == NULL)
1562                 return;
1563         unregister_netdev(priv->rtap_net_dev);
1564         free_ieee80211(priv->rtap_net_dev);
1565         priv->rtap_net_dev = NULL;
1566 }
1567
1568 int libertas_add_rtap(wlan_private *priv)
1569 {
1570         int rc = 0;
1571
1572         if (priv->rtap_net_dev)
1573                 return -EPERM;
1574
1575         priv->rtap_net_dev = alloc_ieee80211(0);
1576         if (priv->rtap_net_dev == NULL)
1577                 return -ENOMEM;
1578
1579
1580         priv->ieee = netdev_priv(priv->rtap_net_dev);
1581
1582         strcpy(priv->rtap_net_dev->name, "rtap%d");
1583
1584         priv->rtap_net_dev->type = ARPHRD_IEEE80211_RADIOTAP;
1585         priv->rtap_net_dev->open = libertas_rtap_open;
1586         priv->rtap_net_dev->stop = libertas_rtap_stop;
1587         priv->rtap_net_dev->get_stats = libertas_rtap_get_stats;
1588         priv->rtap_net_dev->hard_start_xmit = libertas_rtap_hard_start_xmit;
1589         priv->rtap_net_dev->set_multicast_list = libertas_set_multicast_list;
1590         priv->rtap_net_dev->priv = priv;
1591
1592         priv->ieee->iw_mode = IW_MODE_MONITOR;
1593
1594         rc = register_netdev(priv->rtap_net_dev);
1595         if (rc) {
1596                 free_ieee80211(priv->rtap_net_dev);
1597                 priv->rtap_net_dev = NULL;
1598                 return rc;
1599         }
1600
1601         return 0;
1602 }
1603
1604
1605 module_init(libertas_init_module);
1606 module_exit(libertas_exit_module);
1607
1608 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1609 MODULE_AUTHOR("Marvell International Ltd.");
1610 MODULE_LICENSE("GPL");