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/etherdevice.h>
  10 #include <linux/netdevice.h>
  11 #include <linux/if_arp.h>
  12 #include <linux/kthread.h>
  13 #include <linux/kfifo.h>
  14 #include <linux/stddef.h>
  15
  16 #include <net/iw_handler.h>
  17 #include <net/ieee80211.h>
  18
  19 #include "host.h"
  20 #include "decl.h"
  21 #include "dev.h"
  22 #include "wext.h"
  23 #include "debugfs.h"
  24 #include "scan.h"
  25 #include "assoc.h"
  26 #include "cmd.h"
  27
  28 #define DRIVER_RELEASE_VERSION "323.p0"
  29 const char lbs_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
  30 #ifdef  DEBUG
  31     "-dbg"
  32 #endif
  33     "";
  34
  35
  36 /* Module parameters */
  37 unsigned int lbs_debug;
  38 EXPORT_SYMBOL_GPL(lbs_debug);
  39 module_param_named(libertas_debug, lbs_debug, int, 0644);
  40
  41
  42 /* This global structure is used to send the confirm_sleep command as
  43  * fast as possible down to the firmware. */
  44 struct cmd_confirm_sleep confirm_sleep;
  45
  46
  47 #define LBS_TX_PWR_DEFAULT              20      /*100mW */
  48 #define LBS_TX_PWR_US_DEFAULT           20      /*100mW */
  49 #define LBS_TX_PWR_JP_DEFAULT           16      /*50mW */
  50 #define LBS_TX_PWR_FR_DEFAULT           20      /*100mW */
  51 #define LBS_TX_PWR_EMEA_DEFAULT 20      /*100mW */
  52
  53 /* Format { channel, frequency (MHz), maxtxpower } */
  54 /* band: 'B/G', region: USA FCC/Canada IC */
  55 static struct chan_freq_power channel_freq_power_US_BG[] = {
  56         {1, 2412, LBS_TX_PWR_US_DEFAULT},
  57         {2, 2417, LBS_TX_PWR_US_DEFAULT},
  58         {3, 2422, LBS_TX_PWR_US_DEFAULT},
  59         {4, 2427, LBS_TX_PWR_US_DEFAULT},
  60         {5, 2432, LBS_TX_PWR_US_DEFAULT},
  61         {6, 2437, LBS_TX_PWR_US_DEFAULT},
  62         {7, 2442, LBS_TX_PWR_US_DEFAULT},
  63         {8, 2447, LBS_TX_PWR_US_DEFAULT},
  64         {9, 2452, LBS_TX_PWR_US_DEFAULT},
  65         {10, 2457, LBS_TX_PWR_US_DEFAULT},
  66         {11, 2462, LBS_TX_PWR_US_DEFAULT}
  67 };
  68
  69 /* band: 'B/G', region: Europe ETSI */
  70 static struct chan_freq_power channel_freq_power_EU_BG[] = {
  71         {1, 2412, LBS_TX_PWR_EMEA_DEFAULT},
  72         {2, 2417, LBS_TX_PWR_EMEA_DEFAULT},
  73         {3, 2422, LBS_TX_PWR_EMEA_DEFAULT},
  74         {4, 2427, LBS_TX_PWR_EMEA_DEFAULT},
  75         {5, 2432, LBS_TX_PWR_EMEA_DEFAULT},
  76         {6, 2437, LBS_TX_PWR_EMEA_DEFAULT},
  77         {7, 2442, LBS_TX_PWR_EMEA_DEFAULT},
  78         {8, 2447, LBS_TX_PWR_EMEA_DEFAULT},
  79         {9, 2452, LBS_TX_PWR_EMEA_DEFAULT},
  80         {10, 2457, LBS_TX_PWR_EMEA_DEFAULT},
  81         {11, 2462, LBS_TX_PWR_EMEA_DEFAULT},
  82         {12, 2467, LBS_TX_PWR_EMEA_DEFAULT},
  83         {13, 2472, LBS_TX_PWR_EMEA_DEFAULT}
  84 };
  85
  86 /* band: 'B/G', region: Spain */
  87 static struct chan_freq_power channel_freq_power_SPN_BG[] = {
  88         {10, 2457, LBS_TX_PWR_DEFAULT},
  89         {11, 2462, LBS_TX_PWR_DEFAULT}
  90 };
  91
  92 /* band: 'B/G', region: France */
  93 static struct chan_freq_power channel_freq_power_FR_BG[] = {
  94         {10, 2457, LBS_TX_PWR_FR_DEFAULT},
  95         {11, 2462, LBS_TX_PWR_FR_DEFAULT},
  96         {12, 2467, LBS_TX_PWR_FR_DEFAULT},
  97         {13, 2472, LBS_TX_PWR_FR_DEFAULT}
  98 };
  99
 100 /* band: 'B/G', region: Japan */
 101 static struct chan_freq_power channel_freq_power_JPN_BG[] = {
 102         {1, 2412, LBS_TX_PWR_JP_DEFAULT},
 103         {2, 2417, LBS_TX_PWR_JP_DEFAULT},
 104         {3, 2422, LBS_TX_PWR_JP_DEFAULT},
 105         {4, 2427, LBS_TX_PWR_JP_DEFAULT},
 106         {5, 2432, LBS_TX_PWR_JP_DEFAULT},
 107         {6, 2437, LBS_TX_PWR_JP_DEFAULT},
 108         {7, 2442, LBS_TX_PWR_JP_DEFAULT},
 109         {8, 2447, LBS_TX_PWR_JP_DEFAULT},
 110         {9, 2452, LBS_TX_PWR_JP_DEFAULT},
 111         {10, 2457, LBS_TX_PWR_JP_DEFAULT},
 112         {11, 2462, LBS_TX_PWR_JP_DEFAULT},
 113         {12, 2467, LBS_TX_PWR_JP_DEFAULT},
 114         {13, 2472, LBS_TX_PWR_JP_DEFAULT},
 115         {14, 2484, LBS_TX_PWR_JP_DEFAULT}
 116 };
 117
 118 /**
 119  * the structure for channel, frequency and power
 120  */
 121 struct region_cfp_table {
 122         u8 region;
 123         struct chan_freq_power *cfp_BG;
 124         int cfp_no_BG;
 125 };
 126
 127 /**
 128  * the structure for the mapping between region and CFP
 129  */
 130 static struct region_cfp_table region_cfp_table[] = {
 131         {0x10,                  /*US FCC */
 132          channel_freq_power_US_BG,
 133          ARRAY_SIZE(channel_freq_power_US_BG),
 134          }
 135         ,
 136         {0x20,                  /*CANADA IC */
 137          channel_freq_power_US_BG,
 138          ARRAY_SIZE(channel_freq_power_US_BG),
 139          }
 140         ,
 141         {0x30, /*EU*/ channel_freq_power_EU_BG,
 142          ARRAY_SIZE(channel_freq_power_EU_BG),
 143          }
 144         ,
 145         {0x31, /*SPAIN*/ channel_freq_power_SPN_BG,
 146          ARRAY_SIZE(channel_freq_power_SPN_BG),
 147          }
 148         ,
 149         {0x32, /*FRANCE*/ channel_freq_power_FR_BG,
 150          ARRAY_SIZE(channel_freq_power_FR_BG),
 151          }
 152         ,
 153         {0x40, /*JAPAN*/ channel_freq_power_JPN_BG,
 154          ARRAY_SIZE(channel_freq_power_JPN_BG),
 155          }
 156         ,
 157 /*Add new region here */
 158 };
 159
 160 /**
 161  * the table to keep region code
 162  */
 163 u16 lbs_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
 164     { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
 165
 166 /**
 167  * 802.11b/g supported bitrates (in 500Kb/s units)
 168  */
 169 u8 lbs_bg_rates[MAX_RATES] =
 170     { 0x02, 0x04, 0x0b, 0x16, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
 171 0x00, 0x00 };
 172
 173 /**
 174  * FW rate table.  FW refers to rates by their index in this table, not by the
 175  * rate value itself.  Values of 0x00 are
 176  * reserved positions.
 177  */
 178 static u8 fw_data_rates[MAX_RATES] =
 179     { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,
 180       0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00
 181 };
 182
 183 /**
 184  *  @brief use index to get the data rate
 185  *
 186  *  @param idx                The index of data rate
 187  *  @return                     data rate or 0
 188  */
 189 u32 lbs_fw_index_to_data_rate(u8 idx)
 190 {
 191         if (idx >= sizeof(fw_data_rates))
 192                 idx = 0;
 193         return fw_data_rates[idx];
 194 }
 195
 196 /**
 197  *  @brief use rate to get the index
 198  *
 199  *  @param rate                 data rate
 200  *  @return                     index or 0
 201  */
 202 u8 lbs_data_rate_to_fw_index(u32 rate)
 203 {
 204         u8 i;
 205
 206         if (!rate)
 207                 return 0;
 208
 209         for (i = 0; i < sizeof(fw_data_rates); i++) {
 210                 if (rate == fw_data_rates[i])
 211                         return i;
 212         }
 213         return 0;
 214 }
 215
 216 /**
 217  * Attributes exported through sysfs
 218  */
 219
 220 /**
 221  * @brief Get function for sysfs attribute anycast_mask
 222  */
 223 static ssize_t lbs_anycast_get(struct device *dev,
 224                 struct device_attribute *attr, char * buf)
 225 {
 226         struct lbs_private *priv = to_net_dev(dev)->priv;
 227         struct cmd_ds_mesh_access mesh_access;
 228         int ret;
 229
 230         memset(&mesh_access, 0, sizeof(mesh_access));
 231
 232         ret = lbs_mesh_access(priv, CMD_ACT_MESH_GET_ANYCAST, &mesh_access);
 233         if (ret)
 234                 return ret;
 235
 236         return snprintf(buf, 12, "0x%X\n", le32_to_cpu(mesh_access.data[0]));
 237 }
 238
 239 /**
 240  * @brief Set function for sysfs attribute anycast_mask
 241  */
 242 static ssize_t lbs_anycast_set(struct device *dev,
 243                 struct device_attribute *attr, const char * buf, size_t count)
 244 {
 245         struct lbs_private *priv = to_net_dev(dev)->priv;
 246         struct cmd_ds_mesh_access mesh_access;
 247         uint32_t datum;
 248         int ret;
 249
 250         memset(&mesh_access, 0, sizeof(mesh_access));
 251         sscanf(buf, "%x", &datum);
 252         mesh_access.data[0] = cpu_to_le32(datum);
 253
 254         ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_ANYCAST, &mesh_access);
 255         if (ret)
 256                 return ret;
 257
 258         return strlen(buf);
 259 }
 260
 261 static int lbs_add_rtap(struct lbs_private *priv);
 262 static void lbs_remove_rtap(struct lbs_private *priv);
 263 static int lbs_add_mesh(struct lbs_private *priv);
 264 static void lbs_remove_mesh(struct lbs_private *priv);
 265
 266
 267 /**
 268  * Get function for sysfs attribute rtap
 269  */
 270 static ssize_t lbs_rtap_get(struct device *dev,
 271                 struct device_attribute *attr, char * buf)
 272 {
 273         struct lbs_private *priv = to_net_dev(dev)->priv;
 274         return snprintf(buf, 5, "0x%X\n", priv->monitormode);
 275 }
 276
 277 /**
 278  *  Set function for sysfs attribute rtap
 279  */
 280 static ssize_t lbs_rtap_set(struct device *dev,
 281                 struct device_attribute *attr, const char * buf, size_t count)
 282 {
 283         int monitor_mode;
 284         struct lbs_private *priv = to_net_dev(dev)->priv;
 285
 286         sscanf(buf, "%x", &monitor_mode);
 287         if (monitor_mode) {
 288                 if (priv->monitormode == monitor_mode)
 289                         return strlen(buf);
 290                 if (!priv->monitormode) {
 291                         if (priv->infra_open || priv->mesh_open)
 292                                 return -EBUSY;
 293                         if (priv->mode == IW_MODE_INFRA)
 294                                 lbs_send_deauthentication(priv);
 295                         else if (priv->mode == IW_MODE_ADHOC)
 296                                 lbs_stop_adhoc_network(priv);
 297                         lbs_add_rtap(priv);
 298                 }
 299                 priv->monitormode = monitor_mode;
 300         }
 301
 302         else {
 303                 if (!priv->monitormode)
 304                         return strlen(buf);
 305                 priv->monitormode = 0;
 306                 lbs_remove_rtap(priv);
 307
 308                 if (priv->currenttxskb) {
 309                         dev_kfree_skb_any(priv->currenttxskb);
 310                         priv->currenttxskb = NULL;
 311                 }
 312
 313                 /* Wake queues, command thread, etc. */
 314                 lbs_host_to_card_done(priv);
 315         }
 316
 317         lbs_prepare_and_send_command(priv,
 318                         CMD_802_11_MONITOR_MODE, CMD_ACT_SET,
 319                         CMD_OPTION_WAITFORRSP, 0, &priv->monitormode);
 320         return strlen(buf);
 321 }
 322
 323 /**
 324  * lbs_rtap attribute to be exported per ethX interface
 325  * through sysfs (/sys/class/net/ethX/lbs_rtap)
 326  */
 327 static DEVICE_ATTR(lbs_rtap, 0644, lbs_rtap_get, lbs_rtap_set );
 328
 329 /**
 330  * Get function for sysfs attribute mesh
 331  */
 332 static ssize_t lbs_mesh_get(struct device *dev,
 333                 struct device_attribute *attr, char * buf)
 334 {
 335         struct lbs_private *priv = to_net_dev(dev)->priv;
 336         return snprintf(buf, 5, "0x%X\n", !!priv->mesh_dev);
 337 }
 338
 339 /**
 340  *  Set function for sysfs attribute mesh
 341  */
 342 static ssize_t lbs_mesh_set(struct device *dev,
 343                 struct device_attribute *attr, const char * buf, size_t count)
 344 {
 345         struct lbs_private *priv = to_net_dev(dev)->priv;
 346         int enable;
 347         int ret;
 348
 349         sscanf(buf, "%x", &enable);
 350         enable = !!enable;
 351         if (enable == !!priv->mesh_dev)
 352                 return count;
 353
 354         ret = lbs_mesh_config(priv, enable, priv->curbssparams.channel);
 355         if (ret)
 356                 return ret;
 357
 358         if (enable)
 359                 lbs_add_mesh(priv);
 360         else
 361                 lbs_remove_mesh(priv);
 362
 363         return count;
 364 }
 365
 366 /**
 367  * lbs_mesh attribute to be exported per ethX interface
 368  * through sysfs (/sys/class/net/ethX/lbs_mesh)
 369  */
 370 static DEVICE_ATTR(lbs_mesh, 0644, lbs_mesh_get, lbs_mesh_set);
 371
 372 /**
 373  * anycast_mask attribute to be exported per mshX interface
 374  * through sysfs (/sys/class/net/mshX/anycast_mask)
 375  */
 376 static DEVICE_ATTR(anycast_mask, 0644, lbs_anycast_get, lbs_anycast_set);
 377
 378 static struct attribute *lbs_mesh_sysfs_entries[] = {
 379         &dev_attr_anycast_mask.attr,
 380         NULL,
 381 };
 382
 383 static struct attribute_group lbs_mesh_attr_group = {
 384         .attrs = lbs_mesh_sysfs_entries,
 385 };
 386
 387 /**
 388  *  @brief This function opens the ethX or mshX interface
 389  *
 390  *  @param dev     A pointer to net_device structure
 391  *  @return        0 or -EBUSY if monitor mode active
 392  */
 393 static int lbs_dev_open(struct net_device *dev)
 394 {
 395         struct lbs_private *priv = (struct lbs_private *) dev->priv ;
 396         int ret = 0;
 397
 398         lbs_deb_enter(LBS_DEB_NET);
 399
 400         spin_lock_irq(&priv->driver_lock);
 401
 402         if (priv->monitormode) {
 403                 ret = -EBUSY;
 404                 goto out;
 405         }
 406
 407         if (dev == priv->mesh_dev) {
 408                 priv->mesh_open = 1;
 409                 priv->mesh_connect_status = LBS_CONNECTED;
 410                 netif_carrier_on(dev);
 411         } else {
 412                 priv->infra_open = 1;
 413
 414                 if (priv->connect_status == LBS_CONNECTED)
 415                         netif_carrier_on(dev);
 416                 else
 417                         netif_carrier_off(dev);
 418         }
 419
 420         if (!priv->tx_pending_len)
 421                 netif_wake_queue(dev);
 422  out:
 423
 424         spin_unlock_irq(&priv->driver_lock);
 425         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 426         return ret;
 427 }
 428
 429 /**
 430  *  @brief This function closes the mshX interface
 431  *
 432  *  @param dev     A pointer to net_device structure
 433  *  @return        0
 434  */
 435 static int lbs_mesh_stop(struct net_device *dev)
 436 {
 437         struct lbs_private *priv = (struct lbs_private *) (dev->priv);
 438
 439         lbs_deb_enter(LBS_DEB_MESH);
 440         spin_lock_irq(&priv->driver_lock);
 441
 442         priv->mesh_open = 0;
 443         priv->mesh_connect_status = LBS_DISCONNECTED;
 444
 445         netif_stop_queue(dev);
 446         netif_carrier_off(dev);
 447
 448         spin_unlock_irq(&priv->driver_lock);
 449
 450         schedule_work(&priv->mcast_work);
 451
 452         lbs_deb_leave(LBS_DEB_MESH);
 453         return 0;
 454 }
 455
 456 /**
 457  *  @brief This function closes the ethX interface
 458  *
 459  *  @param dev     A pointer to net_device structure
 460  *  @return        0
 461  */
 462 static int lbs_eth_stop(struct net_device *dev)
 463 {
 464         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 465
 466         lbs_deb_enter(LBS_DEB_NET);
 467
 468         spin_lock_irq(&priv->driver_lock);
 469         priv->infra_open = 0;
 470         netif_stop_queue(dev);
 471         spin_unlock_irq(&priv->driver_lock);
 472
 473         schedule_work(&priv->mcast_work);
 474
 475         lbs_deb_leave(LBS_DEB_NET);
 476         return 0;
 477 }
 478
 479 static void lbs_tx_timeout(struct net_device *dev)
 480 {
 481         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 482
 483         lbs_deb_enter(LBS_DEB_TX);
 484
 485         lbs_pr_err("tx watch dog timeout\n");
 486
 487         dev->trans_start = jiffies;
 488
 489         if (priv->currenttxskb)
 490                 lbs_send_tx_feedback(priv, 0);
 491
 492         /* XX: Shouldn't we also call into the hw-specific driver
 493            to kick it somehow? */
 494         lbs_host_to_card_done(priv);
 495
 496         /* More often than not, this actually happens because the
 497            firmware has crapped itself -- rather than just a very
 498            busy medium. So send a harmless command, and if/when
 499            _that_ times out, we'll kick it in the head. */
 500         lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
 501                                      0, 0, NULL);
 502
 503         lbs_deb_leave(LBS_DEB_TX);
 504 }
 505
 506 void lbs_host_to_card_done(struct lbs_private *priv)
 507 {
 508         unsigned long flags;
 509
 510         lbs_deb_enter(LBS_DEB_THREAD);
 511
 512         spin_lock_irqsave(&priv->driver_lock, flags);
 513
 514         priv->dnld_sent = DNLD_RES_RECEIVED;
 515
 516         /* Wake main thread if commands are pending */
 517         if (!priv->cur_cmd || priv->tx_pending_len > 0)
 518                 wake_up_interruptible(&priv->waitq);
 519
 520         spin_unlock_irqrestore(&priv->driver_lock, flags);
 521         lbs_deb_leave(LBS_DEB_THREAD);
 522 }
 523 EXPORT_SYMBOL_GPL(lbs_host_to_card_done);
 524
 525 /**
 526  *  @brief This function returns the network statistics
 527  *
 528  *  @param dev     A pointer to struct lbs_private structure
 529  *  @return        A pointer to net_device_stats structure
 530  */
 531 static struct net_device_stats *lbs_get_stats(struct net_device *dev)
 532 {
 533         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 534
 535         lbs_deb_enter(LBS_DEB_NET);
 536         return &priv->stats;
 537 }
 538
 539 static int lbs_set_mac_address(struct net_device *dev, void *addr)
 540 {
 541         int ret = 0;
 542         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 543         struct sockaddr *phwaddr = addr;
 544         struct cmd_ds_802_11_mac_address cmd;
 545
 546         lbs_deb_enter(LBS_DEB_NET);
 547
 548         /* In case it was called from the mesh device */
 549         dev = priv->dev;
 550
 551         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 552         cmd.action = cpu_to_le16(CMD_ACT_SET);
 553         memcpy(cmd.macadd, phwaddr->sa_data, ETH_ALEN);
 554
 555         ret = lbs_cmd_with_response(priv, CMD_802_11_MAC_ADDRESS, &cmd);
 556         if (ret) {
 557                 lbs_deb_net("set MAC address failed\n");
 558                 goto done;
 559         }
 560
 561         memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN);
 562         memcpy(dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
 563         if (priv->mesh_dev)
 564                 memcpy(priv->mesh_dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
 565
 566 done:
 567         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 568         return ret;
 569 }
 570
 571
 572 static inline int mac_in_list(unsigned char *list, int list_len,
 573                               unsigned char *mac)
 574 {
 575         while (list_len) {
 576                 if (!memcmp(list, mac, ETH_ALEN))
 577                         return 1;
 578                 list += ETH_ALEN;
 579                 list_len--;
 580         }
 581         return 0;
 582 }
 583
 584
 585 static int lbs_add_mcast_addrs(struct cmd_ds_mac_multicast_adr *cmd,
 586                                struct net_device *dev, int nr_addrs)
 587 {
 588         int i = nr_addrs;
 589         struct dev_mc_list *mc_list;
 590         DECLARE_MAC_BUF(mac);
 591
 592         if ((dev->flags & (IFF_UP|IFF_MULTICAST)) != (IFF_UP|IFF_MULTICAST))
 593                 return nr_addrs;
 594
 595         netif_tx_lock_bh(dev);
 596         for (mc_list = dev->mc_list; mc_list; mc_list = mc_list->next) {
 597                 if (mac_in_list(cmd->maclist, nr_addrs, mc_list->dmi_addr)) {
 598                         lbs_deb_net("mcast address %s:%s skipped\n", dev->name,
 599                                     print_mac(mac, mc_list->dmi_addr));
 600                         continue;
 601                 }
 602
 603                 if (i == MRVDRV_MAX_MULTICAST_LIST_SIZE)
 604                         break;
 605                 memcpy(&cmd->maclist[6*i], mc_list->dmi_addr, ETH_ALEN);
 606                 lbs_deb_net("mcast address %s:%s added to filter\n", dev->name,
 607                             print_mac(mac, mc_list->dmi_addr));
 608                 i++;
 609         }
 610         netif_tx_unlock_bh(dev);
 611         if (mc_list)
 612                 return -EOVERFLOW;
 613
 614         return i;
 615 }
 616
 617 static void lbs_set_mcast_worker(struct work_struct *work)
 618 {
 619         struct lbs_private *priv = container_of(work, struct lbs_private, mcast_work);
 620         struct cmd_ds_mac_multicast_adr mcast_cmd;
 621         int dev_flags;
 622         int nr_addrs;
 623         int old_mac_control = priv->mac_control;
 624
 625         lbs_deb_enter(LBS_DEB_NET);
 626
 627         dev_flags = priv->dev->flags;
 628         if (priv->mesh_dev)
 629                 dev_flags |= priv->mesh_dev->flags;
 630
 631         if (dev_flags & IFF_PROMISC) {
 632                 priv->mac_control |= CMD_ACT_MAC_PROMISCUOUS_ENABLE;
 633                 priv->mac_control &= ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
 634                                        CMD_ACT_MAC_MULTICAST_ENABLE);
 635                 goto out_set_mac_control;
 636         } else if (dev_flags & IFF_ALLMULTI) {
 637         do_allmulti:
 638                 priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
 639                 priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |
 640                                        CMD_ACT_MAC_MULTICAST_ENABLE);
 641                 goto out_set_mac_control;
 642         }
 643
 644         /* Once for priv->dev, again for priv->mesh_dev if it exists */
 645         nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->dev, 0);
 646         if (nr_addrs >= 0 && priv->mesh_dev)
 647                 nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->mesh_dev, nr_addrs);
 648         if (nr_addrs < 0)
 649                 goto do_allmulti;
 650
 651         if (nr_addrs) {
 652                 int size = offsetof(struct cmd_ds_mac_multicast_adr,
 653                                     maclist[6*nr_addrs]);
 654
 655                 mcast_cmd.action = cpu_to_le16(CMD_ACT_SET);
 656                 mcast_cmd.hdr.size = cpu_to_le16(size);
 657                 mcast_cmd.nr_of_adrs = cpu_to_le16(nr_addrs);
 658
 659                 lbs_cmd_async(priv, CMD_MAC_MULTICAST_ADR, &mcast_cmd.hdr, size);
 660
 661                 priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE;
 662         } else
 663                 priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE;
 664
 665         priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |
 666                                CMD_ACT_MAC_ALL_MULTICAST_ENABLE);
 667  out_set_mac_control:
 668         if (priv->mac_control != old_mac_control)
 669                 lbs_set_mac_control(priv);
 670
 671         lbs_deb_leave(LBS_DEB_NET);
 672 }
 673
 674 static void lbs_set_multicast_list(struct net_device *dev)
 675 {
 676         struct lbs_private *priv = dev->priv;
 677
 678         schedule_work(&priv->mcast_work);
 679 }
 680
 681 /**
 682  *  @brief This function handles the major jobs in the LBS driver.
 683  *  It handles all events generated by firmware, RX data received
 684  *  from firmware and TX data sent from kernel.
 685  *
 686  *  @param data    A pointer to lbs_thread structure
 687  *  @return        0
 688  */
 689 static int lbs_thread(void *data)
 690 {
 691         struct net_device *dev = data;
 692         struct lbs_private *priv = dev->priv;
 693         wait_queue_t wait;
 694
 695         lbs_deb_enter(LBS_DEB_THREAD);
 696
 697         init_waitqueue_entry(&wait, current);
 698
 699         for (;;) {
 700                 int shouldsleep;
 701                 u8 resp_idx;
 702
 703                 lbs_deb_thread("1: currenttxskb %p, dnld_sent %d\n",
 704                                 priv->currenttxskb, priv->dnld_sent);
 705
 706                 add_wait_queue(&priv->waitq, &wait);
 707                 set_current_state(TASK_INTERRUPTIBLE);
 708                 spin_lock_irq(&priv->driver_lock);
 709
 710                 if (kthread_should_stop())
 711                         shouldsleep = 0;        /* Bye */
 712                 else if (priv->surpriseremoved)
 713                         shouldsleep = 1;        /* We need to wait until we're _told_ to die */
 714                 else if (priv->psstate == PS_STATE_SLEEP)
 715                         shouldsleep = 1;        /* Sleep mode. Nothing we can do till it wakes */
 716                 else if (priv->cmd_timed_out)
 717                         shouldsleep = 0;        /* Command timed out. Recover */
 718                 else if (!priv->fw_ready)
 719                         shouldsleep = 1;        /* Firmware not ready. We're waiting for it */
 720                 else if (priv->dnld_sent)
 721                         shouldsleep = 1;        /* Something is en route to the device already */
 722                 else if (priv->tx_pending_len > 0)
 723                         shouldsleep = 0;        /* We've a packet to send */
 724                 else if (priv->cur_cmd)
 725                         shouldsleep = 1;        /* Can't send a command; one already running */
 726                 else if (!list_empty(&priv->cmdpendingq))
 727                         shouldsleep = 0;        /* We have a command to send */
 728                 else if (__kfifo_len(priv->event_fifo))
 729                         shouldsleep = 0;        /* We have an event to process */
 730                 else if (priv->resp_len[priv->resp_idx])
 731                         shouldsleep = 0;        /* We have a command response */
 732                 else
 733                         shouldsleep = 1;        /* No command */
 734
 735                 if (shouldsleep) {
 736                         lbs_deb_thread("sleeping, connect_status %d, "
 737                                 "psmode %d, psstate %d\n",
 738                                 priv->connect_status,
 739                                 priv->psmode, priv->psstate);
 740                         spin_unlock_irq(&priv->driver_lock);
 741                         schedule();
 742                 } else
 743                         spin_unlock_irq(&priv->driver_lock);
 744
 745                 lbs_deb_thread("2: currenttxskb %p, dnld_send %d\n",
 746                                priv->currenttxskb, priv->dnld_sent);
 747
 748                 set_current_state(TASK_RUNNING);
 749                 remove_wait_queue(&priv->waitq, &wait);
 750
 751                 lbs_deb_thread("3: currenttxskb %p, dnld_sent %d\n",
 752                                priv->currenttxskb, priv->dnld_sent);
 753
 754                 if (kthread_should_stop()) {
 755                         lbs_deb_thread("break from main thread\n");
 756                         break;
 757                 }
 758
 759                 if (priv->surpriseremoved) {
 760                         lbs_deb_thread("adapter removed; waiting to die...\n");
 761                         continue;
 762                 }
 763
 764                 lbs_deb_thread("4: currenttxskb %p, dnld_sent %d\n",
 765                        priv->currenttxskb, priv->dnld_sent);
 766
 767                 spin_lock_irq(&priv->driver_lock);
 768                 /* Process any pending command response */
 769                 resp_idx = priv->resp_idx;
 770                 if (priv->resp_len[resp_idx]) {
 771                         spin_unlock_irq(&priv->driver_lock);
 772                         lbs_process_command_response(priv,
 773                                 priv->resp_buf[resp_idx],
 774                                 priv->resp_len[resp_idx]);
 775                         spin_lock_irq(&priv->driver_lock);
 776                         priv->resp_len[resp_idx] = 0;
 777                 }
 778                 spin_unlock_irq(&priv->driver_lock);
 779
 780                 /* command timeout stuff */
 781                 if (priv->cmd_timed_out && priv->cur_cmd) {
 782                         struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
 783
 784                         if (++priv->nr_retries > 10) {
 785                                 lbs_pr_info("Excessive timeouts submitting command %x\n",
 786                                             le16_to_cpu(cmdnode->cmdbuf->command));
 787                                 lbs_complete_command(priv, cmdnode, -ETIMEDOUT);
 788                                 priv->nr_retries = 0;
 789                         } else {
 790                                 priv->cur_cmd = NULL;
 791                                 lbs_pr_info("requeueing command %x due to timeout (#%d)\n",
 792                                             le16_to_cpu(cmdnode->cmdbuf->command), priv->nr_retries);
 793
 794                                 /* Stick it back at the _top_ of the pending queue
 795                                    for immediate resubmission */
 796                                 list_add(&cmdnode->list, &priv->cmdpendingq);
 797                         }
 798                 }
 799                 priv->cmd_timed_out = 0;
 800
 801                 /* Process hardware events, e.g. card removed, link lost */
 802                 spin_lock_irq(&priv->driver_lock);
 803                 while (__kfifo_len(priv->event_fifo)) {
 804                         u32 event;
 805
 806                         __kfifo_get(priv->event_fifo, (unsigned char *) &event,
 807                                 sizeof(event));
 808                         spin_unlock_irq(&priv->driver_lock);
 809                         lbs_process_event(priv, event);
 810                         spin_lock_irq(&priv->driver_lock);
 811                 }
 812                 spin_unlock_irq(&priv->driver_lock);
 813
 814                 if (!priv->fw_ready)
 815                         continue;
 816
 817                 /* Check if we need to confirm Sleep Request received previously */
 818                 if (priv->psstate == PS_STATE_PRE_SLEEP &&
 819                     !priv->dnld_sent && !priv->cur_cmd) {
 820                         if (priv->connect_status == LBS_CONNECTED) {
 821                                 lbs_deb_thread("pre-sleep, currenttxskb %p, "
 822                                         "dnld_sent %d, cur_cmd %p\n",
 823                                         priv->currenttxskb, priv->dnld_sent,
 824                                         priv->cur_cmd);
 825
 826                                 lbs_ps_confirm_sleep(priv);
 827                         } else {
 828                                 /* workaround for firmware sending
 829                                  * deauth/linkloss event immediately
 830                                  * after sleep request; remove this
 831                                  * after firmware fixes it
 832                                  */
 833                                 priv->psstate = PS_STATE_AWAKE;
 834                                 lbs_pr_alert("ignore PS_SleepConfirm in "
 835                                         "non-connected state\n");
 836                         }
 837                 }
 838
 839                 /* The PS state is changed during processing of Sleep Request
 840                  * event above
 841                  */
 842                 if ((priv->psstate == PS_STATE_SLEEP) ||
 843                     (priv->psstate == PS_STATE_PRE_SLEEP))
 844                         continue;
 845
 846                 /* Execute the next command */
 847                 if (!priv->dnld_sent && !priv->cur_cmd)
 848                         lbs_execute_next_command(priv);
 849
 850                 /* Wake-up command waiters which can't sleep in
 851                  * lbs_prepare_and_send_command
 852                  */
 853                 if (!list_empty(&priv->cmdpendingq))
 854                         wake_up_all(&priv->cmd_pending);
 855
 856                 spin_lock_irq(&priv->driver_lock);
 857                 if (!priv->dnld_sent && priv->tx_pending_len > 0) {
 858                         int ret = priv->hw_host_to_card(priv, MVMS_DAT,
 859                                                         priv->tx_pending_buf,
 860                                                         priv->tx_pending_len);
 861                         if (ret) {
 862                                 lbs_deb_tx("host_to_card failed %d\n", ret);
 863                                 priv->dnld_sent = DNLD_RES_RECEIVED;
 864                         }
 865                         priv->tx_pending_len = 0;
 866                         if (!priv->currenttxskb) {
 867                                 /* We can wake the queues immediately if we aren't
 868                                    waiting for TX feedback */
 869                                 if (priv->connect_status == LBS_CONNECTED)
 870                                         netif_wake_queue(priv->dev);
 871                                 if (priv->mesh_dev &&
 872                                     priv->mesh_connect_status == LBS_CONNECTED)
 873                                         netif_wake_queue(priv->mesh_dev);
 874                         }
 875                 }
 876                 spin_unlock_irq(&priv->driver_lock);
 877         }
 878
 879         del_timer(&priv->command_timer);
 880         wake_up_all(&priv->cmd_pending);
 881
 882         lbs_deb_leave(LBS_DEB_THREAD);
 883         return 0;
 884 }
 885
 886 static int lbs_suspend_callback(struct lbs_private *priv, unsigned long dummy,
 887                                 struct cmd_header *cmd)
 888 {
 889         lbs_deb_enter(LBS_DEB_FW);
 890
 891         netif_device_detach(priv->dev);
 892         if (priv->mesh_dev)
 893                 netif_device_detach(priv->mesh_dev);
 894
 895         priv->fw_ready = 0;
 896         lbs_deb_leave(LBS_DEB_FW);
 897         return 0;
 898 }
 899
 900 int lbs_suspend(struct lbs_private *priv)
 901 {
 902         struct cmd_header cmd;
 903         int ret;
 904
 905         lbs_deb_enter(LBS_DEB_FW);
 906
 907         if (priv->wol_criteria == 0xffffffff) {
 908                 lbs_pr_info("Suspend attempt without configuring wake params!\n");
 909                 return -EINVAL;
 910         }
 911
 912         memset(&cmd, 0, sizeof(cmd));
 913
 914         ret = __lbs_cmd(priv, CMD_802_11_HOST_SLEEP_ACTIVATE, &cmd,
 915                         sizeof(cmd), lbs_suspend_callback, 0);
 916         if (ret)
 917                 lbs_pr_info("HOST_SLEEP_ACTIVATE failed: %d\n", ret);
 918
 919         lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
 920         return ret;
 921 }
 922 EXPORT_SYMBOL_GPL(lbs_suspend);
 923
 924 void lbs_resume(struct lbs_private *priv)
 925 {
 926         lbs_deb_enter(LBS_DEB_FW);
 927
 928         priv->fw_ready = 1;
 929
 930         /* Firmware doesn't seem to give us RX packets any more
 931            until we send it some command. Might as well update */
 932         lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
 933                                      0, 0, NULL);
 934
 935         netif_device_attach(priv->dev);
 936         if (priv->mesh_dev)
 937                 netif_device_attach(priv->mesh_dev);
 938
 939         lbs_deb_leave(LBS_DEB_FW);
 940 }
 941 EXPORT_SYMBOL_GPL(lbs_resume);
 942
 943 /**
 944  *  @brief This function downloads firmware image, gets
 945  *  HW spec from firmware and set basic parameters to
 946  *  firmware.
 947  *
 948  *  @param priv    A pointer to struct lbs_private structure
 949  *  @return        0 or -1
 950  */
 951 static int lbs_setup_firmware(struct lbs_private *priv)
 952 {
 953         int ret = -1;
 954
 955         lbs_deb_enter(LBS_DEB_FW);
 956
 957         /*
 958          * Read MAC address from HW
 959          */
 960         memset(priv->current_addr, 0xff, ETH_ALEN);
 961         ret = lbs_update_hw_spec(priv);
 962         if (ret)
 963                 goto done;
 964
 965         lbs_set_mac_control(priv);
 966 done:
 967         lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
 968         return ret;
 969 }
 970
 971 /**
 972  *  This function handles the timeout of command sending.
 973  *  It will re-send the same command again.
 974  */
 975 static void command_timer_fn(unsigned long data)
 976 {
 977         struct lbs_private *priv = (struct lbs_private *)data;
 978         unsigned long flags;
 979
 980         lbs_deb_enter(LBS_DEB_CMD);
 981         spin_lock_irqsave(&priv->driver_lock, flags);
 982
 983         if (!priv->cur_cmd) {
 984                 lbs_pr_info("Command timer expired; no pending command\n");
 985                 goto out;
 986         }
 987
 988         lbs_pr_info("Command %x timed out\n", le16_to_cpu(priv->cur_cmd->cmdbuf->command));
 989
 990         priv->cmd_timed_out = 1;
 991         wake_up_interruptible(&priv->waitq);
 992 out:
 993         spin_unlock_irqrestore(&priv->driver_lock, flags);
 994         lbs_deb_leave(LBS_DEB_CMD);
 995 }
 996
 997 static void lbs_sync_channel_worker(struct work_struct *work)
 998 {
 999         struct lbs_private *priv = container_of(work, struct lbs_private,
1000                 sync_channel);
1001
1002         lbs_deb_enter(LBS_DEB_MAIN);
1003         if (lbs_update_channel(priv))
1004                 lbs_pr_info("Channel synchronization failed.");
1005         lbs_deb_leave(LBS_DEB_MAIN);
1006 }
1007
1008
1009 static int lbs_init_adapter(struct lbs_private *priv)
1010 {
1011         size_t bufsize;
1012         int i, ret = 0;
1013
1014         lbs_deb_enter(LBS_DEB_MAIN);
1015
1016         /* Allocate buffer to store the BSSID list */
1017         bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
1018         priv->networks = kzalloc(bufsize, GFP_KERNEL);
1019         if (!priv->networks) {
1020                 lbs_pr_err("Out of memory allocating beacons\n");
1021                 ret = -1;
1022                 goto out;
1023         }
1024
1025         /* Initialize scan result lists */
1026         INIT_LIST_HEAD(&priv->network_free_list);
1027         INIT_LIST_HEAD(&priv->network_list);
1028         for (i = 0; i < MAX_NETWORK_COUNT; i++) {
1029                 list_add_tail(&priv->networks[i].list,
1030                               &priv->network_free_list);
1031         }
1032
1033         memset(priv->current_addr, 0xff, ETH_ALEN);
1034
1035         priv->connect_status = LBS_DISCONNECTED;
1036         priv->mesh_connect_status = LBS_DISCONNECTED;
1037         priv->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
1038         priv->mode = IW_MODE_INFRA;
1039         priv->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;
1040         priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
1041         priv->radioon = RADIO_ON;
1042         priv->auto_rate = 1;
1043         priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
1044         priv->psmode = LBS802_11POWERMODECAM;
1045         priv->psstate = PS_STATE_FULL_POWER;
1046
1047         mutex_init(&priv->lock);
1048
1049         setup_timer(&priv->command_timer, command_timer_fn,
1050                 (unsigned long)priv);
1051
1052         INIT_LIST_HEAD(&priv->cmdfreeq);
1053         INIT_LIST_HEAD(&priv->cmdpendingq);
1054
1055         spin_lock_init(&priv->driver_lock);
1056         init_waitqueue_head(&priv->cmd_pending);
1057
1058         /* Allocate the command buffers */
1059         if (lbs_allocate_cmd_buffer(priv)) {
1060                 lbs_pr_err("Out of memory allocating command buffers\n");
1061                 ret = -ENOMEM;
1062                 goto out;
1063         }
1064         priv->resp_idx = 0;
1065         priv->resp_len[0] = priv->resp_len[1] = 0;
1066
1067         /* Create the event FIFO */
1068         priv->event_fifo = kfifo_alloc(sizeof(u32) * 16, GFP_KERNEL, NULL);
1069         if (IS_ERR(priv->event_fifo)) {
1070                 lbs_pr_err("Out of memory allocating event FIFO buffer\n");
1071                 ret = -ENOMEM;
1072                 goto out;
1073         }
1074
1075 out:
1076         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1077
1078         return ret;
1079 }
1080
1081 static void lbs_free_adapter(struct lbs_private *priv)
1082 {
1083         lbs_deb_enter(LBS_DEB_MAIN);
1084
1085         lbs_free_cmd_buffer(priv);
1086         if (priv->event_fifo)
1087                 kfifo_free(priv->event_fifo);
1088         del_timer(&priv->command_timer);
1089         kfree(priv->networks);
1090         priv->networks = NULL;
1091
1092         lbs_deb_leave(LBS_DEB_MAIN);
1093 }
1094
1095 /**
1096  * @brief This function adds the card. it will probe the
1097  * card, allocate the lbs_priv and initialize the device.
1098  *
1099  *  @param card    A pointer to card
1100  *  @return        A pointer to struct lbs_private structure
1101  */
1102 struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
1103 {
1104         struct net_device *dev = NULL;
1105         struct lbs_private *priv = NULL;
1106
1107         lbs_deb_enter(LBS_DEB_MAIN);
1108
1109         /* Allocate an Ethernet device and register it */
1110         dev = alloc_etherdev(sizeof(struct lbs_private));
1111         if (!dev) {
1112                 lbs_pr_err("init ethX device failed\n");
1113                 goto done;
1114         }
1115         priv = dev->priv;
1116
1117         if (lbs_init_adapter(priv)) {
1118                 lbs_pr_err("failed to initialize adapter structure.\n");
1119                 goto err_init_adapter;
1120         }
1121
1122         priv->dev = dev;
1123         priv->card = card;
1124         priv->mesh_open = 0;
1125         priv->infra_open = 0;
1126
1127         /* Setup the OS Interface to our functions */
1128         dev->open = lbs_dev_open;
1129         dev->hard_start_xmit = lbs_hard_start_xmit;
1130         dev->stop = lbs_eth_stop;
1131         dev->set_mac_address = lbs_set_mac_address;
1132         dev->tx_timeout = lbs_tx_timeout;
1133         dev->get_stats = lbs_get_stats;
1134         dev->watchdog_timeo = 5 * HZ;
1135         dev->ethtool_ops = &lbs_ethtool_ops;
1136 #ifdef  WIRELESS_EXT
1137         dev->wireless_handlers = (struct iw_handler_def *)&lbs_handler_def;
1138 #endif
1139         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1140         dev->set_multicast_list = lbs_set_multicast_list;
1141
1142         SET_NETDEV_DEV(dev, dmdev);
1143
1144         priv->rtap_net_dev = NULL;
1145
1146         lbs_deb_thread("Starting main thread...\n");
1147         init_waitqueue_head(&priv->waitq);
1148         priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
1149         if (IS_ERR(priv->main_thread)) {
1150                 lbs_deb_thread("Error creating main thread.\n");
1151                 goto err_init_adapter;
1152         }
1153
1154         priv->work_thread = create_singlethread_workqueue("lbs_worker");
1155         INIT_DELAYED_WORK(&priv->assoc_work, lbs_association_worker);
1156         INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
1157         INIT_WORK(&priv->mcast_work, lbs_set_mcast_worker);
1158         INIT_WORK(&priv->sync_channel, lbs_sync_channel_worker);
1159
1160         sprintf(priv->mesh_ssid, "mesh");
1161         priv->mesh_ssid_len = 4;
1162
1163         priv->wol_criteria = 0xffffffff;
1164         priv->wol_gpio = 0xff;
1165
1166         goto done;
1167
1168 err_init_adapter:
1169         lbs_free_adapter(priv);
1170         free_netdev(dev);
1171         priv = NULL;
1172
1173 done:
1174         lbs_deb_leave_args(LBS_DEB_MAIN, "priv %p", priv);
1175         return priv;
1176 }
1177 EXPORT_SYMBOL_GPL(lbs_add_card);
1178
1179
1180 void lbs_remove_card(struct lbs_private *priv)
1181 {
1182         struct net_device *dev = priv->dev;
1183         union iwreq_data wrqu;
1184
1185         lbs_deb_enter(LBS_DEB_MAIN);
1186
1187         lbs_remove_mesh(priv);
1188         lbs_remove_rtap(priv);
1189
1190         dev = priv->dev;
1191
1192         cancel_delayed_work_sync(&priv->scan_work);
1193         cancel_delayed_work_sync(&priv->assoc_work);
1194         cancel_work_sync(&priv->mcast_work);
1195         destroy_workqueue(priv->work_thread);
1196
1197         if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
1198                 priv->psmode = LBS802_11POWERMODECAM;
1199                 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1200         }
1201
1202         memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1203         wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1204         wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1205
1206         /* Stop the thread servicing the interrupts */
1207         priv->surpriseremoved = 1;
1208         kthread_stop(priv->main_thread);
1209
1210         lbs_free_adapter(priv);
1211
1212         priv->dev = NULL;
1213         free_netdev(dev);
1214
1215         lbs_deb_leave(LBS_DEB_MAIN);
1216 }
1217 EXPORT_SYMBOL_GPL(lbs_remove_card);
1218
1219
1220 int lbs_start_card(struct lbs_private *priv)
1221 {
1222         struct net_device *dev = priv->dev;
1223         int ret = -1;
1224
1225         lbs_deb_enter(LBS_DEB_MAIN);
1226
1227         /* poke the firmware */
1228         ret = lbs_setup_firmware(priv);
1229         if (ret)
1230                 goto done;
1231
1232         /* init 802.11d */
1233         lbs_init_11d(priv);
1234
1235         if (register_netdev(dev)) {
1236                 lbs_pr_err("cannot register ethX device\n");
1237                 goto done;
1238         }
1239         if (device_create_file(&dev->dev, &dev_attr_lbs_rtap))
1240                 lbs_pr_err("cannot register lbs_rtap attribute\n");
1241
1242         lbs_update_channel(priv);
1243
1244         /* 5.0.16p0 is known to NOT support any mesh */
1245         if (priv->fwrelease > 0x05001000) {
1246                 /* Enable mesh, if supported, and work out which TLV it uses.
1247                    0x100 + 291 is an unofficial value used in 5.110.20.pXX
1248                    0x100 + 37 is the official value used in 5.110.21.pXX
1249                    but we check them in that order because 20.pXX doesn't
1250                    give an error -- it just silently fails. */
1251
1252                 /* 5.110.20.pXX firmware will fail the command if the channel
1253                    doesn't match the existing channel. But only if the TLV
1254                    is correct. If the channel is wrong, _BOTH_ versions will
1255                    give an error to 0x100+291, and allow 0x100+37 to succeed.
1256                    It's just that 5.110.20.pXX will not have done anything
1257                    useful */
1258
1259                 priv->mesh_tlv = 0x100 + 291;
1260                 if (lbs_mesh_config(priv, 1, priv->curbssparams.channel)) {
1261                         priv->mesh_tlv = 0x100 + 37;
1262                         if (lbs_mesh_config(priv, 1, priv->curbssparams.channel))
1263                                 priv->mesh_tlv = 0;
1264                 }
1265                 if (priv->mesh_tlv) {
1266                         lbs_add_mesh(priv);
1267
1268                         if (device_create_file(&dev->dev, &dev_attr_lbs_mesh))
1269                                 lbs_pr_err("cannot register lbs_mesh attribute\n");
1270                 }
1271         }
1272
1273         lbs_debugfs_init_one(priv, dev);
1274
1275         lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
1276
1277         ret = 0;
1278
1279 done:
1280         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1281         return ret;
1282 }
1283 EXPORT_SYMBOL_GPL(lbs_start_card);
1284
1285
1286 void lbs_stop_card(struct lbs_private *priv)
1287 {
1288         struct net_device *dev = priv->dev;
1289         struct cmd_ctrl_node *cmdnode;
1290         unsigned long flags;
1291
1292         lbs_deb_enter(LBS_DEB_MAIN);
1293
1294         if (!priv)
1295                 goto out;
1296
1297         netif_stop_queue(priv->dev);
1298         netif_carrier_off(priv->dev);
1299
1300         lbs_debugfs_remove_one(priv);
1301         device_remove_file(&dev->dev, &dev_attr_lbs_rtap);
1302         if (priv->mesh_tlv)
1303                 device_remove_file(&dev->dev, &dev_attr_lbs_mesh);
1304
1305         /* Flush pending command nodes */
1306         del_timer_sync(&priv->command_timer);
1307         spin_lock_irqsave(&priv->driver_lock, flags);
1308         list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
1309                 cmdnode->result = -ENOENT;
1310                 cmdnode->cmdwaitqwoken = 1;
1311                 wake_up_interruptible(&cmdnode->cmdwait_q);
1312         }
1313         spin_unlock_irqrestore(&priv->driver_lock, flags);
1314
1315         unregister_netdev(dev);
1316
1317 out:
1318         lbs_deb_leave(LBS_DEB_MAIN);
1319 }
1320 EXPORT_SYMBOL_GPL(lbs_stop_card);
1321
1322
1323 /**
1324  * @brief This function adds mshX interface
1325  *
1326  *  @param priv    A pointer to the struct lbs_private structure
1327  *  @return        0 if successful, -X otherwise
1328  */
1329 static int lbs_add_mesh(struct lbs_private *priv)
1330 {
1331         struct net_device *mesh_dev = NULL;
1332         int ret = 0;
1333
1334         lbs_deb_enter(LBS_DEB_MESH);
1335
1336         /* Allocate a virtual mesh device */
1337         if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
1338                 lbs_deb_mesh("init mshX device failed\n");
1339                 ret = -ENOMEM;
1340                 goto done;
1341         }
1342         mesh_dev->priv = priv;
1343         priv->mesh_dev = mesh_dev;
1344
1345         mesh_dev->open = lbs_dev_open;
1346         mesh_dev->hard_start_xmit = lbs_hard_start_xmit;
1347         mesh_dev->stop = lbs_mesh_stop;
1348         mesh_dev->get_stats = lbs_get_stats;
1349         mesh_dev->set_mac_address = lbs_set_mac_address;
1350         mesh_dev->ethtool_ops = &lbs_ethtool_ops;
1351         memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
1352                         sizeof(priv->dev->dev_addr));
1353
1354         SET_NETDEV_DEV(priv->mesh_dev, priv->dev->dev.parent);
1355
1356 #ifdef  WIRELESS_EXT
1357         mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
1358 #endif
1359         mesh_dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1360         mesh_dev->set_multicast_list = lbs_set_multicast_list;
1361         /* Register virtual mesh interface */
1362         ret = register_netdev(mesh_dev);
1363         if (ret) {
1364                 lbs_pr_err("cannot register mshX virtual interface\n");
1365                 goto err_free;
1366         }
1367
1368         ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1369         if (ret)
1370                 goto err_unregister;
1371
1372         /* Everything successful */
1373         ret = 0;
1374         goto done;
1375
1376 err_unregister:
1377         unregister_netdev(mesh_dev);
1378
1379 err_free:
1380         free_netdev(mesh_dev);
1381
1382 done:
1383         lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1384         return ret;
1385 }
1386
1387 static void lbs_remove_mesh(struct lbs_private *priv)
1388 {
1389         struct net_device *mesh_dev;
1390
1391
1392         mesh_dev = priv->mesh_dev;
1393         if (!mesh_dev)
1394                 return;
1395
1396         lbs_deb_enter(LBS_DEB_MESH);
1397         netif_stop_queue(mesh_dev);
1398         netif_carrier_off(priv->mesh_dev);
1399         sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1400         unregister_netdev(mesh_dev);
1401         priv->mesh_dev = NULL;
1402         free_netdev(mesh_dev);
1403         lbs_deb_leave(LBS_DEB_MESH);
1404 }
1405
1406 /**
1407  *  @brief This function finds the CFP in
1408  *  region_cfp_table based on region and band parameter.
1409  *
1410  *  @param region  The region code
1411  *  @param band    The band
1412  *  @param cfp_no  A pointer to CFP number
1413  *  @return        A pointer to CFP
1414  */
1415 struct chan_freq_power *lbs_get_region_cfp_table(u8 region, int *cfp_no)
1416 {
1417         int i, end;
1418
1419         lbs_deb_enter(LBS_DEB_MAIN);
1420
1421         end = ARRAY_SIZE(region_cfp_table);
1422
1423         for (i = 0; i < end ; i++) {
1424                 lbs_deb_main("region_cfp_table[i].region=%d\n",
1425                         region_cfp_table[i].region);
1426                 if (region_cfp_table[i].region == region) {
1427                         *cfp_no = region_cfp_table[i].cfp_no_BG;
1428                         lbs_deb_leave(LBS_DEB_MAIN);
1429                         return region_cfp_table[i].cfp_BG;
1430                 }
1431         }
1432
1433         lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1434         return NULL;
1435 }
1436
1437 int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band)
1438 {
1439         int ret = 0;
1440         int i = 0;
1441
1442         struct chan_freq_power *cfp;
1443         int cfp_no;
1444
1445         lbs_deb_enter(LBS_DEB_MAIN);
1446
1447         memset(priv->region_channel, 0, sizeof(priv->region_channel));
1448
1449         cfp = lbs_get_region_cfp_table(region, &cfp_no);
1450         if (cfp != NULL) {
1451                 priv->region_channel[i].nrcfp = cfp_no;
1452                 priv->region_channel[i].CFP = cfp;
1453         } else {
1454                 lbs_deb_main("wrong region code %#x in band B/G\n",
1455                        region);
1456                 ret = -1;
1457                 goto out;
1458         }
1459         priv->region_channel[i].valid = 1;
1460         priv->region_channel[i].region = region;
1461         priv->region_channel[i].band = band;
1462         i++;
1463 out:
1464         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1465         return ret;
1466 }
1467
1468 void lbs_queue_event(struct lbs_private *priv, u32 event)
1469 {
1470         unsigned long flags;
1471
1472         lbs_deb_enter(LBS_DEB_THREAD);
1473         spin_lock_irqsave(&priv->driver_lock, flags);
1474
1475         if (priv->psstate == PS_STATE_SLEEP)
1476                 priv->psstate = PS_STATE_AWAKE;
1477
1478         __kfifo_put(priv->event_fifo, (unsigned char *) &event, sizeof(u32));
1479
1480         wake_up_interruptible(&priv->waitq);
1481
1482         spin_unlock_irqrestore(&priv->driver_lock, flags);
1483         lbs_deb_leave(LBS_DEB_THREAD);
1484 }
1485 EXPORT_SYMBOL_GPL(lbs_queue_event);
1486
1487 void lbs_notify_command_response(struct lbs_private *priv, u8 resp_idx)
1488 {
1489         lbs_deb_enter(LBS_DEB_THREAD);
1490
1491         if (priv->psstate == PS_STATE_SLEEP)
1492                 priv->psstate = PS_STATE_AWAKE;
1493
1494         /* Swap buffers by flipping the response index */
1495         BUG_ON(resp_idx > 1);
1496         priv->resp_idx = resp_idx;
1497
1498         wake_up_interruptible(&priv->waitq);
1499
1500         lbs_deb_leave(LBS_DEB_THREAD);
1501 }
1502 EXPORT_SYMBOL_GPL(lbs_notify_command_response);
1503
1504 static int __init lbs_init_module(void)
1505 {
1506         lbs_deb_enter(LBS_DEB_MAIN);
1507         memset(&confirm_sleep, 0, sizeof(confirm_sleep));
1508         confirm_sleep.hdr.command = cpu_to_le16(CMD_802_11_PS_MODE);
1509         confirm_sleep.hdr.size = cpu_to_le16(sizeof(confirm_sleep));
1510         confirm_sleep.action = cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
1511         lbs_debugfs_init();
1512         lbs_deb_leave(LBS_DEB_MAIN);
1513         return 0;
1514 }
1515
1516 static void __exit lbs_exit_module(void)
1517 {
1518         lbs_deb_enter(LBS_DEB_MAIN);
1519         lbs_debugfs_remove();
1520         lbs_deb_leave(LBS_DEB_MAIN);
1521 }
1522
1523 /*
1524  * rtap interface support fuctions
1525  */
1526
1527 static int lbs_rtap_open(struct net_device *dev)
1528 {
1529         /* Yes, _stop_ the queue. Because we don't support injection */
1530         lbs_deb_enter(LBS_DEB_MAIN);
1531         netif_carrier_off(dev);
1532         netif_stop_queue(dev);
1533         lbs_deb_leave(LBS_DEB_LEAVE);
1534         return 0;
1535 }
1536
1537 static int lbs_rtap_stop(struct net_device *dev)
1538 {
1539         lbs_deb_enter(LBS_DEB_MAIN);
1540         lbs_deb_leave(LBS_DEB_MAIN);
1541         return 0;
1542 }
1543
1544 static int lbs_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1545 {
1546         netif_stop_queue(dev);
1547         return NETDEV_TX_BUSY;
1548 }
1549
1550 static struct net_device_stats *lbs_rtap_get_stats(struct net_device *dev)
1551 {
1552         struct lbs_private *priv = dev->priv;
1553         lbs_deb_enter(LBS_DEB_NET);
1554         return &priv->stats;
1555 }
1556
1557
1558 static void lbs_remove_rtap(struct lbs_private *priv)
1559 {
1560         lbs_deb_enter(LBS_DEB_MAIN);
1561         if (priv->rtap_net_dev == NULL)
1562                 goto out;
1563         unregister_netdev(priv->rtap_net_dev);
1564         free_netdev(priv->rtap_net_dev);
1565         priv->rtap_net_dev = NULL;
1566 out:
1567         lbs_deb_leave(LBS_DEB_MAIN);
1568 }
1569
1570 static int lbs_add_rtap(struct lbs_private *priv)
1571 {
1572         int ret = 0;
1573         struct net_device *rtap_dev;
1574
1575         lbs_deb_enter(LBS_DEB_MAIN);
1576         if (priv->rtap_net_dev) {
1577                 ret = -EPERM;
1578                 goto out;
1579         }
1580
1581         rtap_dev = alloc_netdev(0, "rtap%d", ether_setup);
1582         if (rtap_dev == NULL) {
1583                 ret = -ENOMEM;
1584                 goto out;
1585         }
1586
1587         memcpy(rtap_dev->dev_addr, priv->current_addr, ETH_ALEN);
1588         rtap_dev->type = ARPHRD_IEEE80211_RADIOTAP;
1589         rtap_dev->open = lbs_rtap_open;
1590         rtap_dev->stop = lbs_rtap_stop;
1591         rtap_dev->get_stats = lbs_rtap_get_stats;
1592         rtap_dev->hard_start_xmit = lbs_rtap_hard_start_xmit;
1593         rtap_dev->priv = priv;
1594
1595         ret = register_netdev(rtap_dev);
1596         if (ret) {
1597                 free_netdev(rtap_dev);
1598                 goto out;
1599         }
1600         priv->rtap_net_dev = rtap_dev;
1601
1602 out:
1603         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1604         return ret;
1605 }
1606
1607 #ifndef CONFIG_IEEE80211
1608 const char *escape_essid(const char *essid, u8 essid_len)
1609 {
1610         static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
1611         const char *s = essid;
1612         char *d = escaped;
1613
1614         if (ieee80211_is_empty_essid(essid, essid_len)) {
1615                 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
1616                 return escaped;
1617         }
1618
1619         essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
1620         while (essid_len--) {
1621                 if (*s == '\0') {
1622                         *d++ = '\\';
1623                         *d++ = '0';
1624                         s++;
1625                 } else {
1626                         *d++ = *s++;
1627                 }
1628         }
1629         *d = '\0';
1630         return escaped;
1631 }
1632 #endif
1633
1634 module_init(lbs_init_module);
1635 module_exit(lbs_exit_module);
1636
1637 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1638 MODULE_AUTHOR("Marvell International Ltd.");
1639 MODULE_LICENSE("GPL");