SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/net/wireless/libertas/main.c

   1 /**
   2   * This file contains the major functions in WLAN
   3   * driver. It includes init, exit, open, close and main
   4   * thread etc..
   5   */
   6
   7 #include <linux/moduleparam.h>
   8 #include <linux/delay.h>
   9 #include <linux/freezer.h>
  10 #include <linux/etherdevice.h>
  11 #include <linux/netdevice.h>
  12 #include <linux/if_arp.h>
  13 #include <linux/kthread.h>
  14
  15 #include <net/iw_handler.h>
  16 #include <net/ieee80211.h>
  17
  18 #include "host.h"
  19 #include "decl.h"
  20 #include "dev.h"
  21 #include "wext.h"
  22 #include "debugfs.h"
  23 #include "assoc.h"
  24 #include "join.h"
  25
  26 #define DRIVER_RELEASE_VERSION "322.p1"
  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 *) dev->driver_data;
 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 *) dev->driver_data;
 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         for (;;) {
 772                 lbs_deb_thread( "main-thread 111: intcounter=%d "
 773                        "currenttxskb=%p dnld_sent=%d\n",
 774                        adapter->intcounter,
 775                        adapter->currenttxskb, priv->dnld_sent);
 776
 777                 add_wait_queue(&priv->waitq, &wait);
 778                 set_current_state(TASK_INTERRUPTIBLE);
 779                 spin_lock_irq(&adapter->driver_lock);
 780                 if ((adapter->psstate == PS_STATE_SLEEP) ||
 781                     (!adapter->intcounter
 782                      && (priv->dnld_sent || adapter->cur_cmd ||
 783                          list_empty(&adapter->cmdpendingq)))) {
 784                         lbs_deb_thread(
 785                                "main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
 786                                adapter->connect_status, adapter->intcounter,
 787                                adapter->psmode, adapter->psstate);
 788                         spin_unlock_irq(&adapter->driver_lock);
 789                         schedule();
 790                 } else
 791                         spin_unlock_irq(&adapter->driver_lock);
 792
 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_station_hw(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         ret = priv->hw_prog_firmware(priv);
 937
 938         if (ret) {
 939                 lbs_deb_fw("bootloader in invalid state\n");
 940                 ret = -1;
 941                 goto done;
 942         }
 943
 944         /*
 945          * Read MAC address from HW
 946          */
 947         memset(adapter->current_addr, 0xff, ETH_ALEN);
 948
 949         ret = libertas_prepare_and_send_command(priv, CMD_GET_HW_SPEC,
 950                                     0, CMD_OPTION_WAITFORRSP, 0, NULL);
 951
 952         if (ret) {
 953                 ret = -1;
 954                 goto done;
 955         }
 956
 957         libertas_set_mac_packet_filter(priv);
 958
 959         /* Get the supported Data rates */
 960         ret = libertas_prepare_and_send_command(priv, CMD_802_11_DATA_RATE,
 961                                     CMD_ACT_GET_TX_RATE,
 962                                     CMD_OPTION_WAITFORRSP, 0, NULL);
 963
 964         if (ret) {
 965                 ret = -1;
 966                 goto done;
 967         }
 968
 969         /* Disable mesh autostart */
 970         if (priv->mesh_dev) {
 971                 memset(&mesh_access, 0, sizeof(mesh_access));
 972                 mesh_access.data[0] = cpu_to_le32(0);
 973                 ret = libertas_prepare_and_send_command(priv,
 974                                 CMD_MESH_ACCESS,
 975                                 CMD_ACT_MESH_SET_AUTOSTART_ENABLED,
 976                                 CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
 977                 if (ret) {
 978                         ret = -1;
 979                         goto done;
 980                 }
 981                 priv->mesh_autostart_enabled = 0;
 982         }
 983
 984         ret = 0;
 985 done:
 986         lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
 987         return ret;
 988 }
 989
 990 static void command_timer_fn(unsigned long data);
 991
 992 /**
 993  *  This function handles the timeout of command sending.
 994  *  It will re-send the same command again.
 995  */
 996 static void command_timer_fn(unsigned long data)
 997 {
 998         wlan_private *priv = (wlan_private *)data;
 999         wlan_adapter *adapter = priv->adapter;
1000         struct cmd_ctrl_node *ptempnode;
1001         struct cmd_ds_command *cmd;
1002         unsigned long flags;
1003
1004         ptempnode = adapter->cur_cmd;
1005         if (ptempnode == NULL) {
1006                 lbs_deb_fw("ptempnode empty\n");
1007                 return;
1008         }
1009
1010         cmd = (struct cmd_ds_command *)ptempnode->bufvirtualaddr;
1011         if (!cmd) {
1012                 lbs_deb_fw("cmd is NULL\n");
1013                 return;
1014         }
1015
1016         lbs_deb_fw("command_timer_fn fired, cmd %x\n", cmd->command);
1017
1018         if (!adapter->fw_ready)
1019                 return;
1020
1021         spin_lock_irqsave(&adapter->driver_lock, flags);
1022         adapter->cur_cmd = NULL;
1023         spin_unlock_irqrestore(&adapter->driver_lock, flags);
1024
1025         lbs_deb_fw("re-sending same command because of timeout\n");
1026         libertas_queue_cmd(adapter, ptempnode, 0);
1027
1028         wake_up_interruptible(&priv->waitq);
1029
1030         return;
1031 }
1032
1033 static void libertas_free_adapter(wlan_private * priv)
1034 {
1035         wlan_adapter *adapter = priv->adapter;
1036
1037         if (!adapter) {
1038                 lbs_deb_fw("why double free adapter?\n");
1039                 return;
1040         }
1041
1042         lbs_deb_fw("free command buffer\n");
1043         libertas_free_cmd_buffer(priv);
1044
1045         lbs_deb_fw("free command_timer\n");
1046         del_timer(&adapter->command_timer);
1047
1048         lbs_deb_fw("free scan results table\n");
1049         kfree(adapter->networks);
1050         adapter->networks = NULL;
1051
1052         /* Free the adapter object itself */
1053         lbs_deb_fw("free adapter\n");
1054         kfree(adapter);
1055         priv->adapter = NULL;
1056 }
1057
1058 static int wlan_allocate_adapter(wlan_private * priv)
1059 {
1060         size_t bufsize;
1061         wlan_adapter *adapter = priv->adapter;
1062
1063         /* Allocate buffer to store the BSSID list */
1064         bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
1065         adapter->networks = kzalloc(bufsize, GFP_KERNEL);
1066         if (!adapter->networks) {
1067                 lbs_pr_err("Out of memory allocating beacons\n");
1068                 libertas_free_adapter(priv);
1069                 return -ENOMEM;
1070         }
1071
1072         /* Allocate the command buffers */
1073         libertas_allocate_cmd_buffer(priv);
1074
1075         memset(&adapter->libertas_ps_confirm_sleep, 0, sizeof(struct PS_CMD_ConfirmSleep));
1076         adapter->libertas_ps_confirm_sleep.seqnum = cpu_to_le16(++adapter->seqnum);
1077         adapter->libertas_ps_confirm_sleep.command =
1078             cpu_to_le16(CMD_802_11_PS_MODE);
1079         adapter->libertas_ps_confirm_sleep.size =
1080             cpu_to_le16(sizeof(struct PS_CMD_ConfirmSleep));
1081         adapter->libertas_ps_confirm_sleep.result = 0;
1082         adapter->libertas_ps_confirm_sleep.action =
1083             cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
1084
1085         return 0;
1086 }
1087
1088 static void wlan_init_adapter(wlan_private * priv)
1089 {
1090         wlan_adapter *adapter = priv->adapter;
1091         int i;
1092
1093         adapter->connect_status = LIBERTAS_DISCONNECTED;
1094         memset(adapter->current_addr, 0xff, ETH_ALEN);
1095
1096         /* 802.11 specific */
1097         adapter->secinfo.wep_enabled = 0;
1098         for (i = 0; i < sizeof(adapter->wep_keys) / sizeof(adapter->wep_keys[0]);
1099              i++)
1100                 memset(&adapter->wep_keys[i], 0, sizeof(struct enc_key));
1101         adapter->wep_tx_keyidx = 0;
1102         adapter->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
1103         adapter->mode = IW_MODE_INFRA;
1104
1105         adapter->pending_assoc_req = NULL;
1106         adapter->in_progress_assoc_req = NULL;
1107
1108         /* Initialize scan result lists */
1109         INIT_LIST_HEAD(&adapter->network_free_list);
1110         INIT_LIST_HEAD(&adapter->network_list);
1111         for (i = 0; i < MAX_NETWORK_COUNT; i++) {
1112                 list_add_tail(&adapter->networks[i].list,
1113                               &adapter->network_free_list);
1114         }
1115
1116         mutex_init(&adapter->lock);
1117
1118         memset(&adapter->curbssparams, 0, sizeof(adapter->curbssparams));
1119         adapter->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;
1120
1121         /* PnP and power profile */
1122         adapter->surpriseremoved = 0;
1123
1124         adapter->currentpacketfilter =
1125             CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
1126
1127         adapter->radioon = RADIO_ON;
1128
1129         adapter->auto_rate = 1;
1130         adapter->cur_rate = 0;
1131
1132         // set default capabilities
1133         adapter->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
1134
1135         adapter->psmode = WLAN802_11POWERMODECAM;
1136
1137         adapter->psstate = PS_STATE_FULL_POWER;
1138         adapter->needtowakeup = 0;
1139
1140         adapter->intcounter = 0;
1141
1142         adapter->currenttxskb = NULL;
1143
1144         memset(&adapter->tx_queue_ps, 0, NR_TX_QUEUE*sizeof(struct sk_buff*));
1145         adapter->tx_queue_idx = 0;
1146         spin_lock_init(&adapter->txqueue_lock);
1147
1148         return;
1149 }
1150
1151 static int libertas_init_fw(wlan_private * priv)
1152 {
1153         int ret = -1;
1154         wlan_adapter *adapter = priv->adapter;
1155
1156         lbs_deb_enter(LBS_DEB_FW);
1157
1158         /* Allocate adapter structure */
1159         if ((ret = wlan_allocate_adapter(priv)) != 0)
1160                 goto done;
1161
1162         /* init adapter structure */
1163         wlan_init_adapter(priv);
1164
1165         /* init timer etc. */
1166         setup_timer(&adapter->command_timer, command_timer_fn,
1167                         (unsigned long)priv);
1168
1169         /* download fimrware etc. */
1170         if ((ret = wlan_setup_station_hw(priv)) != 0) {
1171                 del_timer_sync(&adapter->command_timer);
1172                 goto done;
1173         }
1174
1175         /* init 802.11d */
1176         libertas_init_11d(priv);
1177
1178         ret = 0;
1179 done:
1180         lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
1181         return ret;
1182 }
1183
1184 /**
1185  * @brief This function adds the card. it will probe the
1186  * card, allocate the wlan_priv and initialize the device.
1187  *
1188  *  @param card    A pointer to card
1189  *  @return        A pointer to wlan_private structure
1190  */
1191 wlan_private *libertas_add_card(void *card, struct device *dmdev)
1192 {
1193         struct net_device *dev = NULL;
1194         wlan_private *priv = NULL;
1195
1196         lbs_deb_enter(LBS_DEB_NET);
1197
1198         /* Allocate an Ethernet device and register it */
1199         if (!(dev = alloc_etherdev(sizeof(wlan_private)))) {
1200                 lbs_pr_err("init ethX device failed\n");
1201                 return NULL;
1202         }
1203         priv = dev->priv;
1204
1205         /* allocate buffer for wlan_adapter */
1206         if (!(priv->adapter = kzalloc(sizeof(wlan_adapter), GFP_KERNEL))) {
1207                 lbs_pr_err("allocate buffer for wlan_adapter failed\n");
1208                 goto err_kzalloc;
1209         }
1210
1211         priv->dev = dev;
1212         priv->card = card;
1213         priv->mesh_open = 0;
1214         priv->infra_open = 0;
1215
1216         SET_MODULE_OWNER(dev);
1217
1218         /* Setup the OS Interface to our functions */
1219         dev->open = libertas_open;
1220         dev->hard_start_xmit = libertas_pre_start_xmit;
1221         dev->stop = libertas_close;
1222         dev->set_mac_address = libertas_set_mac_address;
1223         dev->tx_timeout = libertas_tx_timeout;
1224         dev->get_stats = libertas_get_stats;
1225         dev->watchdog_timeo = 5 * HZ;
1226         dev->ethtool_ops = &libertas_ethtool_ops;
1227 #ifdef  WIRELESS_EXT
1228         dev->wireless_handlers = (struct iw_handler_def *)&libertas_handler_def;
1229 #endif
1230 #define NETIF_F_DYNALLOC 16
1231         dev->features |= NETIF_F_DYNALLOC;
1232         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1233         dev->set_multicast_list = libertas_set_multicast_list;
1234
1235         SET_NETDEV_DEV(dev, dmdev);
1236
1237         INIT_LIST_HEAD(&priv->adapter->cmdfreeq);
1238         INIT_LIST_HEAD(&priv->adapter->cmdpendingq);
1239
1240         spin_lock_init(&priv->adapter->driver_lock);
1241         init_waitqueue_head(&priv->adapter->cmd_pending);
1242         priv->adapter->nr_cmd_pending = 0;
1243         priv->rtap_net_dev = NULL;
1244         if (device_create_file(dmdev, &dev_attr_libertas_rtap))
1245                 goto err_kzalloc;
1246         goto done;
1247
1248 err_kzalloc:
1249         free_netdev(dev);
1250         priv = NULL;
1251 done:
1252         lbs_deb_leave_args(LBS_DEB_NET, "priv %p", priv);
1253         return priv;
1254 }
1255 EXPORT_SYMBOL_GPL(libertas_add_card);
1256
1257 int libertas_activate_card(wlan_private *priv)
1258 {
1259         struct net_device *dev = priv->dev;
1260         int ret = -1;
1261
1262         lbs_deb_enter(LBS_DEB_MAIN);
1263
1264         lbs_deb_thread("Starting main thread...\n");
1265         init_waitqueue_head(&priv->waitq);
1266         priv->main_thread = kthread_run(libertas_thread, dev, "libertas_main");
1267         if (IS_ERR(priv->main_thread)) {
1268                 lbs_deb_thread("Error creating main thread.\n");
1269                 goto done;
1270         }
1271
1272         priv->assoc_thread =
1273                 create_singlethread_workqueue("libertas_assoc");
1274         INIT_DELAYED_WORK(&priv->assoc_work, libertas_association_worker);
1275         INIT_WORK(&priv->sync_channel, libertas_sync_channel);
1276
1277         /*
1278          * Register the device. Fillup the private data structure with
1279          * relevant information from the card and request for the required
1280          * IRQ.
1281          */
1282         if (priv->hw_register_dev(priv) < 0) {
1283                 lbs_pr_err("failed to register WLAN device\n");
1284                 goto err_registerdev;
1285         }
1286
1287         /* init FW and HW */
1288         if (libertas_init_fw(priv)) {
1289                 lbs_pr_err("firmware init failed\n");
1290                 goto err_registerdev;
1291         }
1292
1293         if (register_netdev(dev)) {
1294                 lbs_pr_err("cannot register ethX device\n");
1295                 goto err_init_fw;
1296         }
1297
1298         lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
1299
1300         libertas_debugfs_init_one(priv, dev);
1301
1302         ret = 0;
1303         goto done;
1304
1305 err_init_fw:
1306         priv->hw_unregister_dev(priv);
1307 err_registerdev:
1308         destroy_workqueue(priv->assoc_thread);
1309         /* Stop the thread servicing the interrupts */
1310         wake_up_interruptible(&priv->waitq);
1311         kthread_stop(priv->main_thread);
1312 done:
1313         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
1314         return ret;
1315 }
1316 EXPORT_SYMBOL_GPL(libertas_activate_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         SET_MODULE_OWNER(mesh_dev);
1342
1343         mesh_dev->open = libertas_mesh_open;
1344         mesh_dev->hard_start_xmit = libertas_mesh_pre_start_xmit;
1345         mesh_dev->stop = libertas_mesh_close;
1346         mesh_dev->get_stats = libertas_get_stats;
1347         mesh_dev->set_mac_address = libertas_set_mac_address;
1348         mesh_dev->ethtool_ops = &libertas_ethtool_ops;
1349         memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
1350                         sizeof(priv->dev->dev_addr));
1351
1352         SET_NETDEV_DEV(priv->mesh_dev, dev);
1353
1354 #ifdef  WIRELESS_EXT
1355         mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
1356 #endif
1357 #define NETIF_F_DYNALLOC 16
1358
1359         /* Register virtual mesh interface */
1360         ret = register_netdev(mesh_dev);
1361         if (ret) {
1362                 lbs_pr_err("cannot register mshX virtual interface\n");
1363                 goto err_free;
1364         }
1365
1366         ret = sysfs_create_group(&(mesh_dev->dev.kobj), &libertas_mesh_attr_group);
1367         if (ret)
1368                 goto err_unregister;
1369
1370         /* Everything successful */
1371         ret = 0;
1372         goto done;
1373
1374 err_unregister:
1375         unregister_netdev(mesh_dev);
1376
1377 err_free:
1378         free_netdev(mesh_dev);
1379
1380 done:
1381         lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1382         return ret;
1383 }
1384 EXPORT_SYMBOL_GPL(libertas_add_mesh);
1385
1386 static void wake_pending_cmdnodes(wlan_private *priv)
1387 {
1388         struct cmd_ctrl_node *cmdnode;
1389         unsigned long flags;
1390
1391         lbs_deb_enter(LBS_DEB_HOST);
1392
1393         spin_lock_irqsave(&priv->adapter->driver_lock, flags);
1394         list_for_each_entry(cmdnode, &priv->adapter->cmdpendingq, list) {
1395                 cmdnode->cmdwaitqwoken = 1;
1396                 wake_up_interruptible(&cmdnode->cmdwait_q);
1397         }
1398         spin_unlock_irqrestore(&priv->adapter->driver_lock, flags);
1399 }
1400
1401
1402 int libertas_remove_card(wlan_private *priv)
1403 {
1404         wlan_adapter *adapter;
1405         struct net_device *dev;
1406         union iwreq_data wrqu;
1407
1408         lbs_deb_enter(LBS_DEB_NET);
1409
1410         libertas_remove_rtap(priv);
1411         if (!priv)
1412                 goto out;
1413
1414         adapter = priv->adapter;
1415
1416         if (!adapter)
1417                 goto out;
1418
1419         dev = priv->dev;
1420         device_remove_file(priv->hotplug_device, &dev_attr_libertas_rtap);
1421
1422         netif_stop_queue(priv->dev);
1423         netif_carrier_off(priv->dev);
1424
1425         wake_pending_cmdnodes(priv);
1426
1427         unregister_netdev(dev);
1428
1429         cancel_delayed_work(&priv->assoc_work);
1430         destroy_workqueue(priv->assoc_thread);
1431
1432         if (adapter->psmode == WLAN802_11POWERMODEMAX_PSP) {
1433                 adapter->psmode = WLAN802_11POWERMODECAM;
1434                 libertas_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1435         }
1436
1437         memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1438         wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1439         wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1440
1441         adapter->surpriseremoved = 1;
1442
1443         /* Stop the thread servicing the interrupts */
1444         kthread_stop(priv->main_thread);
1445
1446         libertas_debugfs_remove_one(priv);
1447
1448         lbs_deb_net("free adapter\n");
1449         libertas_free_adapter(priv);
1450
1451         lbs_deb_net("unregister finish\n");
1452
1453         priv->dev = NULL;
1454         free_netdev(dev);
1455
1456 out:
1457         lbs_deb_leave(LBS_DEB_NET);
1458         return 0;
1459 }
1460 EXPORT_SYMBOL_GPL(libertas_remove_card);
1461
1462
1463 void libertas_remove_mesh(wlan_private *priv)
1464 {
1465         struct net_device *mesh_dev;
1466
1467         lbs_deb_enter(LBS_DEB_NET);
1468
1469         if (!priv)
1470                 goto out;
1471
1472         mesh_dev = priv->mesh_dev;
1473
1474         netif_stop_queue(mesh_dev);
1475         netif_carrier_off(priv->mesh_dev);
1476
1477         sysfs_remove_group(&(mesh_dev->dev.kobj), &libertas_mesh_attr_group);
1478         unregister_netdev(mesh_dev);
1479
1480         priv->mesh_dev = NULL ;
1481         free_netdev(mesh_dev);
1482
1483 out:
1484         lbs_deb_leave(LBS_DEB_NET);
1485 }
1486 EXPORT_SYMBOL_GPL(libertas_remove_mesh);
1487
1488 /**
1489  *  @brief This function finds the CFP in
1490  *  region_cfp_table based on region and band parameter.
1491  *
1492  *  @param region  The region code
1493  *  @param band    The band
1494  *  @param cfp_no  A pointer to CFP number
1495  *  @return        A pointer to CFP
1496  */
1497 struct chan_freq_power *libertas_get_region_cfp_table(u8 region, u8 band, int *cfp_no)
1498 {
1499         int i, end;
1500
1501         lbs_deb_enter(LBS_DEB_MAIN);
1502
1503         end = sizeof(region_cfp_table)/sizeof(struct region_cfp_table);
1504
1505         for (i = 0; i < end ; i++) {
1506                 lbs_deb_main("region_cfp_table[i].region=%d\n",
1507                         region_cfp_table[i].region);
1508                 if (region_cfp_table[i].region == region) {
1509                         *cfp_no = region_cfp_table[i].cfp_no_BG;
1510                         lbs_deb_leave(LBS_DEB_MAIN);
1511                         return region_cfp_table[i].cfp_BG;
1512                 }
1513         }
1514
1515         lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1516         return NULL;
1517 }
1518
1519 int libertas_set_regiontable(wlan_private * priv, u8 region, u8 band)
1520 {
1521         wlan_adapter *adapter = priv->adapter;
1522         int ret = 0;
1523         int i = 0;
1524
1525         struct chan_freq_power *cfp;
1526         int cfp_no;
1527
1528         lbs_deb_enter(LBS_DEB_MAIN);
1529
1530         memset(adapter->region_channel, 0, sizeof(adapter->region_channel));
1531
1532         {
1533                 cfp = libertas_get_region_cfp_table(region, band, &cfp_no);
1534                 if (cfp != NULL) {
1535                         adapter->region_channel[i].nrcfp = cfp_no;
1536                         adapter->region_channel[i].CFP = cfp;
1537                 } else {
1538                         lbs_deb_main("wrong region code %#x in band B/G\n",
1539                                region);
1540                         ret = -1;
1541                         goto out;
1542                 }
1543                 adapter->region_channel[i].valid = 1;
1544                 adapter->region_channel[i].region = region;
1545                 adapter->region_channel[i].band = band;
1546                 i++;
1547         }
1548 out:
1549         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1550         return ret;
1551 }
1552
1553 /**
1554  *  @brief This function handles the interrupt. it will change PS
1555  *  state if applicable. it will wake up main_thread to handle
1556  *  the interrupt event as well.
1557  *
1558  *  @param dev     A pointer to net_device structure
1559  *  @return        n/a
1560  */
1561 void libertas_interrupt(struct net_device *dev)
1562 {
1563         wlan_private *priv = dev->priv;
1564
1565         lbs_deb_enter(LBS_DEB_THREAD);
1566
1567         lbs_deb_thread("libertas_interrupt: intcounter=%d\n",
1568                priv->adapter->intcounter);
1569
1570         priv->adapter->intcounter++;
1571
1572         if (priv->adapter->psstate == PS_STATE_SLEEP) {
1573                 priv->adapter->psstate = PS_STATE_AWAKE;
1574                 netif_wake_queue(dev);
1575                 if (priv->mesh_dev)
1576                         netif_wake_queue(priv->mesh_dev);
1577         }
1578
1579         wake_up_interruptible(&priv->waitq);
1580
1581         lbs_deb_leave(LBS_DEB_THREAD);
1582 }
1583 EXPORT_SYMBOL_GPL(libertas_interrupt);
1584
1585 int libertas_reset_device(wlan_private *priv)
1586 {
1587         int ret;
1588
1589         lbs_deb_enter(LBS_DEB_MAIN);
1590         ret = libertas_prepare_and_send_command(priv, CMD_802_11_RESET,
1591                                     CMD_ACT_HALT, 0, 0, NULL);
1592         msleep_interruptible(10);
1593
1594         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1595         return ret;
1596 }
1597 EXPORT_SYMBOL_GPL(libertas_reset_device);
1598
1599 static int libertas_init_module(void)
1600 {
1601         lbs_deb_enter(LBS_DEB_MAIN);
1602         libertas_debugfs_init();
1603         lbs_deb_leave(LBS_DEB_MAIN);
1604         return 0;
1605 }
1606
1607 static void libertas_exit_module(void)
1608 {
1609         lbs_deb_enter(LBS_DEB_MAIN);
1610
1611         libertas_debugfs_remove();
1612
1613         lbs_deb_leave(LBS_DEB_MAIN);
1614 }
1615
1616 /*
1617  * rtap interface support fuctions
1618  */
1619
1620 static int libertas_rtap_open(struct net_device *dev)
1621 {
1622         netif_carrier_off(dev);
1623         netif_stop_queue(dev);
1624         return 0;
1625 }
1626
1627 static int libertas_rtap_stop(struct net_device *dev)
1628 {
1629         return 0;
1630 }
1631
1632 static int libertas_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1633 {
1634         netif_stop_queue(dev);
1635         return -EOPNOTSUPP;
1636 }
1637
1638 static struct net_device_stats *libertas_rtap_get_stats(struct net_device *dev)
1639 {
1640         wlan_private *priv = dev->priv;
1641         return &priv->ieee->stats;
1642 }
1643
1644
1645 void libertas_remove_rtap(wlan_private *priv)
1646 {
1647         if (priv->rtap_net_dev == NULL)
1648                 return;
1649         unregister_netdev(priv->rtap_net_dev);
1650         free_ieee80211(priv->rtap_net_dev);
1651         priv->rtap_net_dev = NULL;
1652 }
1653
1654 int libertas_add_rtap(wlan_private *priv)
1655 {
1656         int rc = 0;
1657
1658         if (priv->rtap_net_dev)
1659                 return -EPERM;
1660
1661         priv->rtap_net_dev = alloc_ieee80211(0);
1662         if (priv->rtap_net_dev == NULL)
1663                 return -ENOMEM;
1664
1665
1666         priv->ieee = netdev_priv(priv->rtap_net_dev);
1667
1668         strcpy(priv->rtap_net_dev->name, "rtap%d");
1669
1670         priv->rtap_net_dev->type = ARPHRD_IEEE80211_RADIOTAP;
1671         priv->rtap_net_dev->open = libertas_rtap_open;
1672         priv->rtap_net_dev->stop = libertas_rtap_stop;
1673         priv->rtap_net_dev->get_stats = libertas_rtap_get_stats;
1674         priv->rtap_net_dev->hard_start_xmit = libertas_rtap_hard_start_xmit;
1675         priv->rtap_net_dev->set_multicast_list = libertas_set_multicast_list;
1676         priv->rtap_net_dev->priv = priv;
1677
1678         priv->ieee->iw_mode = IW_MODE_MONITOR;
1679
1680         rc = register_netdev(priv->rtap_net_dev);
1681         if (rc) {
1682                 free_ieee80211(priv->rtap_net_dev);
1683                 priv->rtap_net_dev = NULL;
1684                 return rc;
1685         }
1686
1687         return 0;
1688 }
1689
1690
1691 module_init(libertas_init_module);
1692 module_exit(libertas_exit_module);
1693
1694 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1695 MODULE_AUTHOR("Marvell International Ltd.");
1696 MODULE_LICENSE("GPL");