git.oblomov.eu Git - linux-2.6/blob - drivers/net/wireless/libertas/main.c

   1 /**
   2   * This file contains the major functions in WLAN
   3   * driver. It includes init, exit, open, close and main
   4   * thread etc..
   5   */
   6
   7 #include <linux/moduleparam.h>
   8 #include <linux/delay.h>
   9 #include <linux/etherdevice.h>
  10 #include <linux/netdevice.h>
  11 #include <linux/if_arp.h>
  12 #include <linux/kthread.h>
  13
  14 #include <net/iw_handler.h>
  15 #include <net/ieee80211.h>
  16
  17 #include "host.h"
  18 #include "decl.h"
  19 #include "dev.h"
  20 #include "wext.h"
  21 #include "debugfs.h"
  22 #include "scan.h"
  23 #include "assoc.h"
  24 #include "cmd.h"
  25
  26 #define DRIVER_RELEASE_VERSION "323.p0"
  27 const char lbs_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
  28 #ifdef  DEBUG
  29     "-dbg"
  30 #endif
  31     "";
  32
  33
  34 /* Module parameters */
  35 unsigned int lbs_debug;
  36 EXPORT_SYMBOL_GPL(lbs_debug);
  37 module_param_named(libertas_debug, lbs_debug, int, 0644);
  38
  39
  40 /* This global structure is used to send the confirm_sleep command as
  41  * fast as possible down to the firmware. */
  42 struct cmd_confirm_sleep confirm_sleep;
  43
  44
  45 #define LBS_TX_PWR_DEFAULT              20      /*100mW */
  46 #define LBS_TX_PWR_US_DEFAULT           20      /*100mW */
  47 #define LBS_TX_PWR_JP_DEFAULT           16      /*50mW */
  48 #define LBS_TX_PWR_FR_DEFAULT           20      /*100mW */
  49 #define LBS_TX_PWR_EMEA_DEFAULT 20      /*100mW */
  50
  51 /* Format { channel, frequency (MHz), maxtxpower } */
  52 /* band: 'B/G', region: USA FCC/Canada IC */
  53 static struct chan_freq_power channel_freq_power_US_BG[] = {
  54         {1, 2412, LBS_TX_PWR_US_DEFAULT},
  55         {2, 2417, LBS_TX_PWR_US_DEFAULT},
  56         {3, 2422, LBS_TX_PWR_US_DEFAULT},
  57         {4, 2427, LBS_TX_PWR_US_DEFAULT},
  58         {5, 2432, LBS_TX_PWR_US_DEFAULT},
  59         {6, 2437, LBS_TX_PWR_US_DEFAULT},
  60         {7, 2442, LBS_TX_PWR_US_DEFAULT},
  61         {8, 2447, LBS_TX_PWR_US_DEFAULT},
  62         {9, 2452, LBS_TX_PWR_US_DEFAULT},
  63         {10, 2457, LBS_TX_PWR_US_DEFAULT},
  64         {11, 2462, LBS_TX_PWR_US_DEFAULT}
  65 };
  66
  67 /* band: 'B/G', region: Europe ETSI */
  68 static struct chan_freq_power channel_freq_power_EU_BG[] = {
  69         {1, 2412, LBS_TX_PWR_EMEA_DEFAULT},
  70         {2, 2417, LBS_TX_PWR_EMEA_DEFAULT},
  71         {3, 2422, LBS_TX_PWR_EMEA_DEFAULT},
  72         {4, 2427, LBS_TX_PWR_EMEA_DEFAULT},
  73         {5, 2432, LBS_TX_PWR_EMEA_DEFAULT},
  74         {6, 2437, LBS_TX_PWR_EMEA_DEFAULT},
  75         {7, 2442, LBS_TX_PWR_EMEA_DEFAULT},
  76         {8, 2447, LBS_TX_PWR_EMEA_DEFAULT},
  77         {9, 2452, LBS_TX_PWR_EMEA_DEFAULT},
  78         {10, 2457, LBS_TX_PWR_EMEA_DEFAULT},
  79         {11, 2462, LBS_TX_PWR_EMEA_DEFAULT},
  80         {12, 2467, LBS_TX_PWR_EMEA_DEFAULT},
  81         {13, 2472, LBS_TX_PWR_EMEA_DEFAULT}
  82 };
  83
  84 /* band: 'B/G', region: Spain */
  85 static struct chan_freq_power channel_freq_power_SPN_BG[] = {
  86         {10, 2457, LBS_TX_PWR_DEFAULT},
  87         {11, 2462, LBS_TX_PWR_DEFAULT}
  88 };
  89
  90 /* band: 'B/G', region: France */
  91 static struct chan_freq_power channel_freq_power_FR_BG[] = {
  92         {10, 2457, LBS_TX_PWR_FR_DEFAULT},
  93         {11, 2462, LBS_TX_PWR_FR_DEFAULT},
  94         {12, 2467, LBS_TX_PWR_FR_DEFAULT},
  95         {13, 2472, LBS_TX_PWR_FR_DEFAULT}
  96 };
  97
  98 /* band: 'B/G', region: Japan */
  99 static struct chan_freq_power channel_freq_power_JPN_BG[] = {
 100         {1, 2412, LBS_TX_PWR_JP_DEFAULT},
 101         {2, 2417, LBS_TX_PWR_JP_DEFAULT},
 102         {3, 2422, LBS_TX_PWR_JP_DEFAULT},
 103         {4, 2427, LBS_TX_PWR_JP_DEFAULT},
 104         {5, 2432, LBS_TX_PWR_JP_DEFAULT},
 105         {6, 2437, LBS_TX_PWR_JP_DEFAULT},
 106         {7, 2442, LBS_TX_PWR_JP_DEFAULT},
 107         {8, 2447, LBS_TX_PWR_JP_DEFAULT},
 108         {9, 2452, LBS_TX_PWR_JP_DEFAULT},
 109         {10, 2457, LBS_TX_PWR_JP_DEFAULT},
 110         {11, 2462, LBS_TX_PWR_JP_DEFAULT},
 111         {12, 2467, LBS_TX_PWR_JP_DEFAULT},
 112         {13, 2472, LBS_TX_PWR_JP_DEFAULT},
 113         {14, 2484, LBS_TX_PWR_JP_DEFAULT}
 114 };
 115
 116 /**
 117  * the structure for channel, frequency and power
 118  */
 119 struct region_cfp_table {
 120         u8 region;
 121         struct chan_freq_power *cfp_BG;
 122         int cfp_no_BG;
 123 };
 124
 125 /**
 126  * the structure for the mapping between region and CFP
 127  */
 128 static struct region_cfp_table region_cfp_table[] = {
 129         {0x10,                  /*US FCC */
 130          channel_freq_power_US_BG,
 131          ARRAY_SIZE(channel_freq_power_US_BG),
 132          }
 133         ,
 134         {0x20,                  /*CANADA IC */
 135          channel_freq_power_US_BG,
 136          ARRAY_SIZE(channel_freq_power_US_BG),
 137          }
 138         ,
 139         {0x30, /*EU*/ channel_freq_power_EU_BG,
 140          ARRAY_SIZE(channel_freq_power_EU_BG),
 141          }
 142         ,
 143         {0x31, /*SPAIN*/ channel_freq_power_SPN_BG,
 144          ARRAY_SIZE(channel_freq_power_SPN_BG),
 145          }
 146         ,
 147         {0x32, /*FRANCE*/ channel_freq_power_FR_BG,
 148          ARRAY_SIZE(channel_freq_power_FR_BG),
 149          }
 150         ,
 151         {0x40, /*JAPAN*/ channel_freq_power_JPN_BG,
 152          ARRAY_SIZE(channel_freq_power_JPN_BG),
 153          }
 154         ,
 155 /*Add new region here */
 156 };
 157
 158 /**
 159  * the table to keep region code
 160  */
 161 u16 lbs_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
 162     { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
 163
 164 /**
 165  * 802.11b/g supported bitrates (in 500Kb/s units)
 166  */
 167 u8 lbs_bg_rates[MAX_RATES] =
 168     { 0x02, 0x04, 0x0b, 0x16, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
 169 0x00, 0x00 };
 170
 171 /**
 172  * FW rate table.  FW refers to rates by their index in this table, not by the
 173  * rate value itself.  Values of 0x00 are
 174  * reserved positions.
 175  */
 176 static u8 fw_data_rates[MAX_RATES] =
 177     { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,
 178       0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00
 179 };
 180
 181 /**
 182  *  @brief use index to get the data rate
 183  *
 184  *  @param idx                The index of data rate
 185  *  @return                     data rate or 0
 186  */
 187 u32 lbs_fw_index_to_data_rate(u8 idx)
 188 {
 189         if (idx >= sizeof(fw_data_rates))
 190                 idx = 0;
 191         return fw_data_rates[idx];
 192 }
 193
 194 /**
 195  *  @brief use rate to get the index
 196  *
 197  *  @param rate                 data rate
 198  *  @return                     index or 0
 199  */
 200 u8 lbs_data_rate_to_fw_index(u32 rate)
 201 {
 202         u8 i;
 203
 204         if (!rate)
 205                 return 0;
 206
 207         for (i = 0; i < sizeof(fw_data_rates); i++) {
 208                 if (rate == fw_data_rates[i])
 209                         return i;
 210         }
 211         return 0;
 212 }
 213
 214 /**
 215  * Attributes exported through sysfs
 216  */
 217
 218 /**
 219  * @brief Get function for sysfs attribute anycast_mask
 220  */
 221 static ssize_t lbs_anycast_get(struct device *dev,
 222                 struct device_attribute *attr, char * buf)
 223 {
 224         struct lbs_private *priv = to_net_dev(dev)->priv;
 225         struct cmd_ds_mesh_access mesh_access;
 226         int ret;
 227
 228         memset(&mesh_access, 0, sizeof(mesh_access));
 229
 230         ret = lbs_mesh_access(priv, CMD_ACT_MESH_GET_ANYCAST, &mesh_access);
 231         if (ret)
 232                 return ret;
 233
 234         return snprintf(buf, 12, "0x%X\n", le32_to_cpu(mesh_access.data[0]));
 235 }
 236
 237 /**
 238  * @brief Set function for sysfs attribute anycast_mask
 239  */
 240 static ssize_t lbs_anycast_set(struct device *dev,
 241                 struct device_attribute *attr, const char * buf, size_t count)
 242 {
 243         struct lbs_private *priv = to_net_dev(dev)->priv;
 244         struct cmd_ds_mesh_access mesh_access;
 245         uint32_t datum;
 246         int ret;
 247
 248         memset(&mesh_access, 0, sizeof(mesh_access));
 249         sscanf(buf, "%x", &datum);
 250         mesh_access.data[0] = cpu_to_le32(datum);
 251
 252         ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_ANYCAST, &mesh_access);
 253         if (ret)
 254                 return ret;
 255
 256         return strlen(buf);
 257 }
 258
 259 static int lbs_add_rtap(struct lbs_private *priv);
 260 static void lbs_remove_rtap(struct lbs_private *priv);
 261 static int lbs_add_mesh(struct lbs_private *priv);
 262 static void lbs_remove_mesh(struct lbs_private *priv);
 263
 264
 265 /**
 266  * Get function for sysfs attribute rtap
 267  */
 268 static ssize_t lbs_rtap_get(struct device *dev,
 269                 struct device_attribute *attr, char * buf)
 270 {
 271         struct lbs_private *priv = to_net_dev(dev)->priv;
 272         return snprintf(buf, 5, "0x%X\n", priv->monitormode);
 273 }
 274
 275 /**
 276  *  Set function for sysfs attribute rtap
 277  */
 278 static ssize_t lbs_rtap_set(struct device *dev,
 279                 struct device_attribute *attr, const char * buf, size_t count)
 280 {
 281         int monitor_mode;
 282         struct lbs_private *priv = to_net_dev(dev)->priv;
 283
 284         sscanf(buf, "%x", &monitor_mode);
 285         if (monitor_mode) {
 286                 if (priv->monitormode == monitor_mode)
 287                         return strlen(buf);
 288                 if (!priv->monitormode) {
 289                         if (priv->infra_open || priv->mesh_open)
 290                                 return -EBUSY;
 291                         if (priv->mode == IW_MODE_INFRA)
 292                                 lbs_send_deauthentication(priv);
 293                         else if (priv->mode == IW_MODE_ADHOC)
 294                                 lbs_stop_adhoc_network(priv);
 295                         lbs_add_rtap(priv);
 296                 }
 297                 priv->monitormode = monitor_mode;
 298         }
 299
 300         else {
 301                 if (!priv->monitormode)
 302                         return strlen(buf);
 303                 priv->monitormode = 0;
 304                 lbs_remove_rtap(priv);
 305
 306                 if (priv->currenttxskb) {
 307                         dev_kfree_skb_any(priv->currenttxskb);
 308                         priv->currenttxskb = NULL;
 309                 }
 310
 311                 /* Wake queues, command thread, etc. */
 312                 lbs_host_to_card_done(priv);
 313         }
 314
 315         lbs_prepare_and_send_command(priv,
 316                         CMD_802_11_MONITOR_MODE, CMD_ACT_SET,
 317                         CMD_OPTION_WAITFORRSP, 0, &priv->monitormode);
 318         return strlen(buf);
 319 }
 320
 321 /**
 322  * lbs_rtap attribute to be exported per ethX interface
 323  * through sysfs (/sys/class/net/ethX/lbs_rtap)
 324  */
 325 static DEVICE_ATTR(lbs_rtap, 0644, lbs_rtap_get, lbs_rtap_set );
 326
 327 /**
 328  * Get function for sysfs attribute mesh
 329  */
 330 static ssize_t lbs_mesh_get(struct device *dev,
 331                 struct device_attribute *attr, char * buf)
 332 {
 333         struct lbs_private *priv = to_net_dev(dev)->priv;
 334         return snprintf(buf, 5, "0x%X\n", !!priv->mesh_dev);
 335 }
 336
 337 /**
 338  *  Set function for sysfs attribute mesh
 339  */
 340 static ssize_t lbs_mesh_set(struct device *dev,
 341                 struct device_attribute *attr, const char * buf, size_t count)
 342 {
 343         struct lbs_private *priv = to_net_dev(dev)->priv;
 344         int enable;
 345         int ret;
 346
 347         sscanf(buf, "%x", &enable);
 348         enable = !!enable;
 349         if (enable == !!priv->mesh_dev)
 350                 return count;
 351
 352         ret = lbs_mesh_config(priv, enable, priv->curbssparams.channel);
 353         if (ret)
 354                 return ret;
 355
 356         if (enable)
 357                 lbs_add_mesh(priv);
 358         else
 359                 lbs_remove_mesh(priv);
 360
 361         return count;
 362 }
 363
 364 /**
 365  * lbs_mesh attribute to be exported per ethX interface
 366  * through sysfs (/sys/class/net/ethX/lbs_mesh)
 367  */
 368 static DEVICE_ATTR(lbs_mesh, 0644, lbs_mesh_get, lbs_mesh_set);
 369
 370 /**
 371  * anycast_mask attribute to be exported per mshX interface
 372  * through sysfs (/sys/class/net/mshX/anycast_mask)
 373  */
 374 static DEVICE_ATTR(anycast_mask, 0644, lbs_anycast_get, lbs_anycast_set);
 375
 376 static struct attribute *lbs_mesh_sysfs_entries[] = {
 377         &dev_attr_anycast_mask.attr,
 378         NULL,
 379 };
 380
 381 static struct attribute_group lbs_mesh_attr_group = {
 382         .attrs = lbs_mesh_sysfs_entries,
 383 };
 384
 385 /**
 386  *  @brief This function opens the ethX or mshX interface
 387  *
 388  *  @param dev     A pointer to net_device structure
 389  *  @return        0 or -EBUSY if monitor mode active
 390  */
 391 static int lbs_dev_open(struct net_device *dev)
 392 {
 393         struct lbs_private *priv = (struct lbs_private *) dev->priv ;
 394         int ret = 0;
 395
 396         lbs_deb_enter(LBS_DEB_NET);
 397
 398         spin_lock_irq(&priv->driver_lock);
 399
 400         if (priv->monitormode) {
 401                 ret = -EBUSY;
 402                 goto out;
 403         }
 404
 405         if (dev == priv->mesh_dev) {
 406                 priv->mesh_open = 1;
 407                 priv->mesh_connect_status = LBS_CONNECTED;
 408                 netif_carrier_on(dev);
 409         } else {
 410                 priv->infra_open = 1;
 411
 412                 if (priv->connect_status == LBS_CONNECTED)
 413                         netif_carrier_on(dev);
 414                 else
 415                         netif_carrier_off(dev);
 416         }
 417
 418         if (!priv->tx_pending_len)
 419                 netif_wake_queue(dev);
 420  out:
 421
 422         spin_unlock_irq(&priv->driver_lock);
 423         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 424         return ret;
 425 }
 426
 427 /**
 428  *  @brief This function closes the mshX interface
 429  *
 430  *  @param dev     A pointer to net_device structure
 431  *  @return        0
 432  */
 433 static int lbs_mesh_stop(struct net_device *dev)
 434 {
 435         struct lbs_private *priv = (struct lbs_private *) (dev->priv);
 436
 437         lbs_deb_enter(LBS_DEB_MESH);
 438         spin_lock_irq(&priv->driver_lock);
 439
 440         priv->mesh_open = 0;
 441         priv->mesh_connect_status = LBS_DISCONNECTED;
 442
 443         netif_stop_queue(dev);
 444         netif_carrier_off(dev);
 445
 446         spin_unlock_irq(&priv->driver_lock);
 447
 448         lbs_deb_leave(LBS_DEB_MESH);
 449         return 0;
 450 }
 451
 452 /**
 453  *  @brief This function closes the ethX interface
 454  *
 455  *  @param dev     A pointer to net_device structure
 456  *  @return        0
 457  */
 458 static int lbs_eth_stop(struct net_device *dev)
 459 {
 460         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 461
 462         lbs_deb_enter(LBS_DEB_NET);
 463
 464         spin_lock_irq(&priv->driver_lock);
 465         priv->infra_open = 0;
 466         netif_stop_queue(dev);
 467         spin_unlock_irq(&priv->driver_lock);
 468
 469         lbs_deb_leave(LBS_DEB_NET);
 470         return 0;
 471 }
 472
 473 static void lbs_tx_timeout(struct net_device *dev)
 474 {
 475         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 476
 477         lbs_deb_enter(LBS_DEB_TX);
 478
 479         lbs_pr_err("tx watch dog timeout\n");
 480
 481         dev->trans_start = jiffies;
 482
 483         if (priv->currenttxskb) {
 484                 priv->eventcause = 0x01000000;
 485                 lbs_send_tx_feedback(priv);
 486         }
 487         /* XX: Shouldn't we also call into the hw-specific driver
 488            to kick it somehow? */
 489         lbs_host_to_card_done(priv);
 490
 491         /* More often than not, this actually happens because the
 492            firmware has crapped itself -- rather than just a very
 493            busy medium. So send a harmless command, and if/when
 494            _that_ times out, we'll kick it in the head. */
 495         lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
 496                                      0, 0, NULL);
 497
 498         lbs_deb_leave(LBS_DEB_TX);
 499 }
 500
 501 void lbs_host_to_card_done(struct lbs_private *priv)
 502 {
 503         unsigned long flags;
 504
 505         lbs_deb_enter(LBS_DEB_THREAD);
 506
 507         spin_lock_irqsave(&priv->driver_lock, flags);
 508
 509         priv->dnld_sent = DNLD_RES_RECEIVED;
 510
 511         /* Wake main thread if commands are pending */
 512         if (!priv->cur_cmd || priv->tx_pending_len > 0)
 513                 wake_up_interruptible(&priv->waitq);
 514
 515         spin_unlock_irqrestore(&priv->driver_lock, flags);
 516         lbs_deb_leave(LBS_DEB_THREAD);
 517 }
 518 EXPORT_SYMBOL_GPL(lbs_host_to_card_done);
 519
 520 /**
 521  *  @brief This function returns the network statistics
 522  *
 523  *  @param dev     A pointer to struct lbs_private structure
 524  *  @return        A pointer to net_device_stats structure
 525  */
 526 static struct net_device_stats *lbs_get_stats(struct net_device *dev)
 527 {
 528         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 529
 530         lbs_deb_enter(LBS_DEB_NET);
 531         return &priv->stats;
 532 }
 533
 534 static int lbs_set_mac_address(struct net_device *dev, void *addr)
 535 {
 536         int ret = 0;
 537         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 538         struct sockaddr *phwaddr = addr;
 539         struct cmd_ds_802_11_mac_address cmd;
 540
 541         lbs_deb_enter(LBS_DEB_NET);
 542
 543         /* In case it was called from the mesh device */
 544         dev = priv->dev;
 545
 546         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 547         cmd.action = cpu_to_le16(CMD_ACT_SET);
 548         memcpy(cmd.macadd, phwaddr->sa_data, ETH_ALEN);
 549
 550         ret = lbs_cmd_with_response(priv, CMD_802_11_MAC_ADDRESS, &cmd);
 551         if (ret) {
 552                 lbs_deb_net("set MAC address failed\n");
 553                 goto done;
 554         }
 555
 556         memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN);
 557         memcpy(dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
 558         if (priv->mesh_dev)
 559                 memcpy(priv->mesh_dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
 560
 561 done:
 562         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 563         return ret;
 564 }
 565
 566 static int lbs_copy_multicast_address(struct lbs_private *priv,
 567                                      struct net_device *dev)
 568 {
 569         int i = 0;
 570         struct dev_mc_list *mcptr = dev->mc_list;
 571
 572         for (i = 0; i < dev->mc_count; i++) {
 573                 memcpy(&priv->multicastlist[i], mcptr->dmi_addr, ETH_ALEN);
 574                 mcptr = mcptr->next;
 575         }
 576         return i;
 577 }
 578
 579 static void lbs_set_multicast_list(struct net_device *dev)
 580 {
 581         struct lbs_private *priv = dev->priv;
 582         int old_mac_control;
 583         DECLARE_MAC_BUF(mac);
 584
 585         lbs_deb_enter(LBS_DEB_NET);
 586
 587         old_mac_control = priv->mac_control;
 588
 589         if (dev->flags & IFF_PROMISC) {
 590                 lbs_deb_net("enable promiscuous mode\n");
 591                 priv->mac_control |=
 592                     CMD_ACT_MAC_PROMISCUOUS_ENABLE;
 593                 priv->mac_control &=
 594                     ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
 595                       CMD_ACT_MAC_MULTICAST_ENABLE);
 596         } else {
 597                 /* Multicast */
 598                 priv->mac_control &=
 599                     ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
 600
 601                 if (dev->flags & IFF_ALLMULTI || dev->mc_count >
 602                     MRVDRV_MAX_MULTICAST_LIST_SIZE) {
 603                         lbs_deb_net( "enabling all multicast\n");
 604                         priv->mac_control |=
 605                             CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
 606                         priv->mac_control &=
 607                             ~CMD_ACT_MAC_MULTICAST_ENABLE;
 608                 } else {
 609                         priv->mac_control &=
 610                             ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
 611
 612                         if (!dev->mc_count) {
 613                                 lbs_deb_net("no multicast addresses, "
 614                                        "disabling multicast\n");
 615                                 priv->mac_control &=
 616                                     ~CMD_ACT_MAC_MULTICAST_ENABLE;
 617                         } else {
 618                                 int i;
 619
 620                                 priv->mac_control |=
 621                                     CMD_ACT_MAC_MULTICAST_ENABLE;
 622
 623                                 priv->nr_of_multicastmacaddr =
 624                                     lbs_copy_multicast_address(priv, dev);
 625
 626                                 lbs_deb_net("multicast addresses: %d\n",
 627                                        dev->mc_count);
 628
 629                                 for (i = 0; i < dev->mc_count; i++) {
 630                                         lbs_deb_net("Multicast address %d: %s\n",
 631                                                i, print_mac(mac,
 632                                                priv->multicastlist[i]));
 633                                 }
 634                                 /* send multicast addresses to firmware */
 635                                 lbs_prepare_and_send_command(priv,
 636                                                       CMD_MAC_MULTICAST_ADR,
 637                                                       CMD_ACT_SET, 0, 0,
 638                                                       NULL);
 639                         }
 640                 }
 641         }
 642
 643         if (priv->mac_control != old_mac_control)
 644                 lbs_set_mac_control(priv);
 645
 646         lbs_deb_leave(LBS_DEB_NET);
 647 }
 648
 649 /**
 650  *  @brief This function handles the major jobs in the LBS driver.
 651  *  It handles all events generated by firmware, RX data received
 652  *  from firmware and TX data sent from kernel.
 653  *
 654  *  @param data    A pointer to lbs_thread structure
 655  *  @return        0
 656  */
 657 static int lbs_thread(void *data)
 658 {
 659         struct net_device *dev = data;
 660         struct lbs_private *priv = dev->priv;
 661         wait_queue_t wait;
 662         u8 ireg = 0;
 663
 664         lbs_deb_enter(LBS_DEB_THREAD);
 665
 666         init_waitqueue_entry(&wait, current);
 667
 668         for (;;) {
 669                 int shouldsleep;
 670
 671                 lbs_deb_thread( "main-thread 111: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
 672                                 priv->intcounter, priv->currenttxskb, priv->dnld_sent);
 673
 674                 add_wait_queue(&priv->waitq, &wait);
 675                 set_current_state(TASK_INTERRUPTIBLE);
 676                 spin_lock_irq(&priv->driver_lock);
 677
 678                 if (kthread_should_stop())
 679                         shouldsleep = 0;        /* Bye */
 680                 else if (priv->surpriseremoved)
 681                         shouldsleep = 1;        /* We need to wait until we're _told_ to die */
 682                 else if (priv->psstate == PS_STATE_SLEEP)
 683                         shouldsleep = 1;        /* Sleep mode. Nothing we can do till it wakes */
 684                 else if (priv->intcounter)
 685                         shouldsleep = 0;        /* Interrupt pending. Deal with it now */
 686                 else if (priv->cmd_timed_out)
 687                         shouldsleep = 0;        /* Command timed out. Recover */
 688                 else if (!priv->fw_ready)
 689                         shouldsleep = 1;        /* Firmware not ready. We're waiting for it */
 690                 else if (priv->dnld_sent)
 691                         shouldsleep = 1;        /* Something is en route to the device already */
 692                 else if (priv->tx_pending_len > 0)
 693                         shouldsleep = 0;        /* We've a packet to send */
 694                 else if (priv->cur_cmd)
 695                         shouldsleep = 1;        /* Can't send a command; one already running */
 696                 else if (!list_empty(&priv->cmdpendingq))
 697                         shouldsleep = 0;        /* We have a command to send */
 698                 else
 699                         shouldsleep = 1;        /* No command */
 700
 701                 if (shouldsleep) {
 702                         lbs_deb_thread("main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
 703                                        priv->connect_status, priv->intcounter,
 704                                        priv->psmode, priv->psstate);
 705                         spin_unlock_irq(&priv->driver_lock);
 706                         schedule();
 707                 } else
 708                         spin_unlock_irq(&priv->driver_lock);
 709
 710                 lbs_deb_thread("main-thread 222 (waking up): intcounter=%d currenttxskb=%p dnld_sent=%d\n",
 711                                priv->intcounter, priv->currenttxskb, priv->dnld_sent);
 712
 713                 set_current_state(TASK_RUNNING);
 714                 remove_wait_queue(&priv->waitq, &wait);
 715
 716                 lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
 717                                priv->intcounter, priv->currenttxskb, priv->dnld_sent);
 718
 719                 if (kthread_should_stop()) {
 720                         lbs_deb_thread("main-thread: break from main thread\n");
 721                         break;
 722                 }
 723
 724                 if (priv->surpriseremoved) {
 725                         lbs_deb_thread("adapter removed; waiting to die...\n");
 726                         continue;
 727                 }
 728
 729                 spin_lock_irq(&priv->driver_lock);
 730
 731                 if (priv->intcounter) {
 732                         u8 int_status;
 733
 734                         priv->intcounter = 0;
 735                         int_status = priv->hw_get_int_status(priv, &ireg);
 736
 737                         if (int_status) {
 738                                 lbs_deb_thread("main-thread: reading HOST_INT_STATUS_REG failed\n");
 739                                 spin_unlock_irq(&priv->driver_lock);
 740                                 continue;
 741                         }
 742                         priv->hisregcpy |= ireg;
 743                 }
 744
 745                 lbs_deb_thread("main-thread 444: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
 746                                priv->intcounter, priv->currenttxskb, priv->dnld_sent);
 747
 748                 /* command response? */
 749                 if (priv->hisregcpy & MRVDRV_CMD_UPLD_RDY) {
 750                         lbs_deb_thread("main-thread: cmd response ready\n");
 751
 752                         priv->hisregcpy &= ~MRVDRV_CMD_UPLD_RDY;
 753                         spin_unlock_irq(&priv->driver_lock);
 754                         lbs_process_rx_command(priv);
 755                         spin_lock_irq(&priv->driver_lock);
 756                 }
 757
 758                 if (priv->cmd_timed_out && priv->cur_cmd) {
 759                         struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
 760
 761                         if (++priv->nr_retries > 10) {
 762                                 lbs_pr_info("Excessive timeouts submitting command %x\n",
 763                                             le16_to_cpu(cmdnode->cmdbuf->command));
 764                                 lbs_complete_command(priv, cmdnode, -ETIMEDOUT);
 765                                 priv->nr_retries = 0;
 766                         } else {
 767                                 priv->cur_cmd = NULL;
 768                                 lbs_pr_info("requeueing command %x due to timeout (#%d)\n",
 769                                             le16_to_cpu(cmdnode->cmdbuf->command), priv->nr_retries);
 770
 771                                 /* Stick it back at the _top_ of the pending queue
 772                                    for immediate resubmission */
 773                                 list_add(&cmdnode->list, &priv->cmdpendingq);
 774                         }
 775                 }
 776                 priv->cmd_timed_out = 0;
 777
 778                 /* Any Card Event */
 779                 if (priv->hisregcpy & MRVDRV_CARDEVENT) {
 780                         lbs_deb_thread("main-thread: Card Event Activity\n");
 781
 782                         priv->hisregcpy &= ~MRVDRV_CARDEVENT;
 783
 784                         if (priv->hw_read_event_cause(priv)) {
 785                                 lbs_pr_alert("main-thread: hw_read_event_cause failed\n");
 786                                 spin_unlock_irq(&priv->driver_lock);
 787                                 continue;
 788                         }
 789                         spin_unlock_irq(&priv->driver_lock);
 790                         lbs_process_event(priv);
 791                 } else
 792                         spin_unlock_irq(&priv->driver_lock);
 793
 794                 if (!priv->fw_ready)
 795                         continue;
 796
 797                 /* Check if we need to confirm Sleep Request received previously */
 798                 if (priv->psstate == PS_STATE_PRE_SLEEP &&
 799                     !priv->dnld_sent && !priv->cur_cmd) {
 800                         if (priv->connect_status == LBS_CONNECTED) {
 801                                 lbs_deb_thread("main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p dnld_sent=%d cur_cmd=%p, confirm now\n",
 802                                                priv->intcounter, priv->currenttxskb, priv->dnld_sent, priv->cur_cmd);
 803
 804                                 lbs_ps_confirm_sleep(priv);
 805                         } else {
 806                                 /* workaround for firmware sending
 807                                  * deauth/linkloss event immediately
 808                                  * after sleep request; remove this
 809                                  * after firmware fixes it
 810                                  */
 811                                 priv->psstate = PS_STATE_AWAKE;
 812                                 lbs_pr_alert("main-thread: ignore PS_SleepConfirm in non-connected state\n");
 813                         }
 814                 }
 815
 816                 /* The PS state is changed during processing of Sleep Request
 817                  * event above
 818                  */
 819                 if ((priv->psstate == PS_STATE_SLEEP) ||
 820                     (priv->psstate == PS_STATE_PRE_SLEEP))
 821                         continue;
 822
 823                 /* Execute the next command */
 824                 if (!priv->dnld_sent && !priv->cur_cmd)
 825                         lbs_execute_next_command(priv);
 826
 827                 /* Wake-up command waiters which can't sleep in
 828                  * lbs_prepare_and_send_command
 829                  */
 830                 if (!list_empty(&priv->cmdpendingq))
 831                         wake_up_all(&priv->cmd_pending);
 832
 833                 spin_lock_irq(&priv->driver_lock);
 834                 if (!priv->dnld_sent && priv->tx_pending_len > 0) {
 835                         int ret = priv->hw_host_to_card(priv, MVMS_DAT,
 836                                                         priv->tx_pending_buf,
 837                                                         priv->tx_pending_len);
 838                         if (ret) {
 839                                 lbs_deb_tx("host_to_card failed %d\n", ret);
 840                                 priv->dnld_sent = DNLD_RES_RECEIVED;
 841                         }
 842                         priv->tx_pending_len = 0;
 843                         if (!priv->currenttxskb) {
 844                                 /* We can wake the queues immediately if we aren't
 845                                    waiting for TX feedback */
 846                                 if (priv->connect_status == LBS_CONNECTED)
 847                                         netif_wake_queue(priv->dev);
 848                                 if (priv->mesh_dev &&
 849                                     priv->mesh_connect_status == LBS_CONNECTED)
 850                                         netif_wake_queue(priv->mesh_dev);
 851                         }
 852                 }
 853                 spin_unlock_irq(&priv->driver_lock);
 854         }
 855
 856         del_timer(&priv->command_timer);
 857         wake_up_all(&priv->cmd_pending);
 858
 859         lbs_deb_leave(LBS_DEB_THREAD);
 860         return 0;
 861 }
 862
 863 static int lbs_suspend_callback(struct lbs_private *priv, unsigned long dummy,
 864                                 struct cmd_header *cmd)
 865 {
 866         lbs_deb_enter(LBS_DEB_FW);
 867
 868         netif_device_detach(priv->dev);
 869         if (priv->mesh_dev)
 870                 netif_device_detach(priv->mesh_dev);
 871
 872         priv->fw_ready = 0;
 873         lbs_deb_leave(LBS_DEB_FW);
 874         return 0;
 875 }
 876
 877 int lbs_suspend(struct lbs_private *priv)
 878 {
 879         struct cmd_header cmd;
 880         int ret;
 881
 882         lbs_deb_enter(LBS_DEB_FW);
 883
 884         if (priv->wol_criteria == 0xffffffff) {
 885                 lbs_pr_info("Suspend attempt without configuring wake params!\n");
 886                 return -EINVAL;
 887         }
 888
 889         memset(&cmd, 0, sizeof(cmd));
 890
 891         ret = __lbs_cmd(priv, CMD_802_11_HOST_SLEEP_ACTIVATE, &cmd,
 892                         sizeof(cmd), lbs_suspend_callback, 0);
 893         if (ret)
 894                 lbs_pr_info("HOST_SLEEP_ACTIVATE failed: %d\n", ret);
 895
 896         lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
 897         return ret;
 898 }
 899 EXPORT_SYMBOL_GPL(lbs_suspend);
 900
 901 int lbs_resume(struct lbs_private *priv)
 902 {
 903         lbs_deb_enter(LBS_DEB_FW);
 904
 905         priv->fw_ready = 1;
 906
 907         /* Firmware doesn't seem to give us RX packets any more
 908            until we send it some command. Might as well update */
 909         lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
 910                                      0, 0, NULL);
 911
 912         netif_device_attach(priv->dev);
 913         if (priv->mesh_dev)
 914                 netif_device_attach(priv->mesh_dev);
 915
 916         lbs_deb_leave(LBS_DEB_FW);
 917         return 0;
 918 }
 919 EXPORT_SYMBOL_GPL(lbs_resume);
 920
 921 /**
 922  *  @brief This function downloads firmware image, gets
 923  *  HW spec from firmware and set basic parameters to
 924  *  firmware.
 925  *
 926  *  @param priv    A pointer to struct lbs_private structure
 927  *  @return        0 or -1
 928  */
 929 static int lbs_setup_firmware(struct lbs_private *priv)
 930 {
 931         int ret = -1;
 932
 933         lbs_deb_enter(LBS_DEB_FW);
 934
 935         /*
 936          * Read MAC address from HW
 937          */
 938         memset(priv->current_addr, 0xff, ETH_ALEN);
 939         ret = lbs_update_hw_spec(priv);
 940         if (ret) {
 941                 ret = -1;
 942                 goto done;
 943         }
 944
 945         lbs_set_mac_control(priv);
 946
 947         ret = lbs_get_data_rate(priv);
 948         if (ret < 0) {
 949                 ret = -1;
 950                 goto done;
 951         }
 952
 953         ret = 0;
 954 done:
 955         lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
 956         return ret;
 957 }
 958
 959 /**
 960  *  This function handles the timeout of command sending.
 961  *  It will re-send the same command again.
 962  */
 963 static void command_timer_fn(unsigned long data)
 964 {
 965         struct lbs_private *priv = (struct lbs_private *)data;
 966         unsigned long flags;
 967
 968         lbs_deb_enter(LBS_DEB_CMD);
 969         spin_lock_irqsave(&priv->driver_lock, flags);
 970
 971         if (!priv->cur_cmd) {
 972                 lbs_pr_info("Command timer expired; no pending command\n");
 973                 goto out;
 974         }
 975
 976         lbs_pr_info("Command %x timed out\n", le16_to_cpu(priv->cur_cmd->cmdbuf->command));
 977
 978         priv->cmd_timed_out = 1;
 979         wake_up_interruptible(&priv->waitq);
 980 out:
 981         spin_unlock_irqrestore(&priv->driver_lock, flags);
 982         lbs_deb_leave(LBS_DEB_CMD);
 983 }
 984
 985 static void lbs_sync_channel_worker(struct work_struct *work)
 986 {
 987         struct lbs_private *priv = container_of(work, struct lbs_private,
 988                 sync_channel);
 989
 990         lbs_deb_enter(LBS_DEB_MAIN);
 991         if (lbs_update_channel(priv))
 992                 lbs_pr_info("Channel synchronization failed.");
 993         lbs_deb_leave(LBS_DEB_MAIN);
 994 }
 995
 996
 997 static int lbs_init_adapter(struct lbs_private *priv)
 998 {
 999         size_t bufsize;
1000         int i, ret = 0;
1001
1002         lbs_deb_enter(LBS_DEB_MAIN);
1003
1004         /* Allocate buffer to store the BSSID list */
1005         bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
1006         priv->networks = kzalloc(bufsize, GFP_KERNEL);
1007         if (!priv->networks) {
1008                 lbs_pr_err("Out of memory allocating beacons\n");
1009                 ret = -1;
1010                 goto out;
1011         }
1012
1013         /* Initialize scan result lists */
1014         INIT_LIST_HEAD(&priv->network_free_list);
1015         INIT_LIST_HEAD(&priv->network_list);
1016         for (i = 0; i < MAX_NETWORK_COUNT; i++) {
1017                 list_add_tail(&priv->networks[i].list,
1018                               &priv->network_free_list);
1019         }
1020
1021         memset(priv->current_addr, 0xff, ETH_ALEN);
1022
1023         priv->connect_status = LBS_DISCONNECTED;
1024         priv->mesh_connect_status = LBS_DISCONNECTED;
1025         priv->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
1026         priv->mode = IW_MODE_INFRA;
1027         priv->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;
1028         priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
1029         priv->radioon = RADIO_ON;
1030         priv->auto_rate = 1;
1031         priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
1032         priv->psmode = LBS802_11POWERMODECAM;
1033         priv->psstate = PS_STATE_FULL_POWER;
1034
1035         mutex_init(&priv->lock);
1036
1037         setup_timer(&priv->command_timer, command_timer_fn,
1038                 (unsigned long)priv);
1039
1040         INIT_LIST_HEAD(&priv->cmdfreeq);
1041         INIT_LIST_HEAD(&priv->cmdpendingq);
1042
1043         spin_lock_init(&priv->driver_lock);
1044         init_waitqueue_head(&priv->cmd_pending);
1045
1046         /* Allocate the command buffers */
1047         if (lbs_allocate_cmd_buffer(priv)) {
1048                 lbs_pr_err("Out of memory allocating command buffers\n");
1049                 ret = -1;
1050         }
1051
1052 out:
1053         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1054
1055         return ret;
1056 }
1057
1058 static void lbs_free_adapter(struct lbs_private *priv)
1059 {
1060         lbs_deb_enter(LBS_DEB_MAIN);
1061
1062         lbs_free_cmd_buffer(priv);
1063         del_timer(&priv->command_timer);
1064         kfree(priv->networks);
1065         priv->networks = NULL;
1066
1067         lbs_deb_leave(LBS_DEB_MAIN);
1068 }
1069
1070 /**
1071  * @brief This function adds the card. it will probe the
1072  * card, allocate the lbs_priv and initialize the device.
1073  *
1074  *  @param card    A pointer to card
1075  *  @return        A pointer to struct lbs_private structure
1076  */
1077 struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
1078 {
1079         struct net_device *dev = NULL;
1080         struct lbs_private *priv = NULL;
1081
1082         lbs_deb_enter(LBS_DEB_MAIN);
1083
1084         /* Allocate an Ethernet device and register it */
1085         dev = alloc_etherdev(sizeof(struct lbs_private));
1086         if (!dev) {
1087                 lbs_pr_err("init ethX device failed\n");
1088                 goto done;
1089         }
1090         priv = dev->priv;
1091
1092         if (lbs_init_adapter(priv)) {
1093                 lbs_pr_err("failed to initialize adapter structure.\n");
1094                 goto err_init_adapter;
1095         }
1096
1097         priv->dev = dev;
1098         priv->card = card;
1099         priv->mesh_open = 0;
1100         priv->infra_open = 0;
1101
1102         /* Setup the OS Interface to our functions */
1103         dev->open = lbs_dev_open;
1104         dev->hard_start_xmit = lbs_hard_start_xmit;
1105         dev->stop = lbs_eth_stop;
1106         dev->set_mac_address = lbs_set_mac_address;
1107         dev->tx_timeout = lbs_tx_timeout;
1108         dev->get_stats = lbs_get_stats;
1109         dev->watchdog_timeo = 5 * HZ;
1110         dev->ethtool_ops = &lbs_ethtool_ops;
1111 #ifdef  WIRELESS_EXT
1112         dev->wireless_handlers = (struct iw_handler_def *)&lbs_handler_def;
1113 #endif
1114         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1115         dev->set_multicast_list = lbs_set_multicast_list;
1116
1117         SET_NETDEV_DEV(dev, dmdev);
1118
1119         priv->rtap_net_dev = NULL;
1120
1121         lbs_deb_thread("Starting main thread...\n");
1122         init_waitqueue_head(&priv->waitq);
1123         priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
1124         if (IS_ERR(priv->main_thread)) {
1125                 lbs_deb_thread("Error creating main thread.\n");
1126                 goto err_init_adapter;
1127         }
1128
1129         priv->work_thread = create_singlethread_workqueue("lbs_worker");
1130         INIT_DELAYED_WORK(&priv->assoc_work, lbs_association_worker);
1131         INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
1132         INIT_WORK(&priv->sync_channel, lbs_sync_channel_worker);
1133
1134         sprintf(priv->mesh_ssid, "mesh");
1135         priv->mesh_ssid_len = 4;
1136
1137         priv->wol_criteria = 0xffffffff;
1138         priv->wol_gpio = 0xff;
1139
1140         goto done;
1141
1142 err_init_adapter:
1143         lbs_free_adapter(priv);
1144         free_netdev(dev);
1145         priv = NULL;
1146
1147 done:
1148         lbs_deb_leave_args(LBS_DEB_MAIN, "priv %p", priv);
1149         return priv;
1150 }
1151 EXPORT_SYMBOL_GPL(lbs_add_card);
1152
1153
1154 int lbs_remove_card(struct lbs_private *priv)
1155 {
1156         struct net_device *dev = priv->dev;
1157         union iwreq_data wrqu;
1158
1159         lbs_deb_enter(LBS_DEB_MAIN);
1160
1161         lbs_remove_mesh(priv);
1162         lbs_remove_rtap(priv);
1163
1164         dev = priv->dev;
1165
1166         cancel_delayed_work(&priv->scan_work);
1167         cancel_delayed_work(&priv->assoc_work);
1168         destroy_workqueue(priv->work_thread);
1169
1170         if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
1171                 priv->psmode = LBS802_11POWERMODECAM;
1172                 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1173         }
1174
1175         memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1176         wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1177         wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1178
1179         /* Stop the thread servicing the interrupts */
1180         priv->surpriseremoved = 1;
1181         kthread_stop(priv->main_thread);
1182
1183         lbs_free_adapter(priv);
1184
1185         priv->dev = NULL;
1186         free_netdev(dev);
1187
1188         lbs_deb_leave(LBS_DEB_MAIN);
1189         return 0;
1190 }
1191 EXPORT_SYMBOL_GPL(lbs_remove_card);
1192
1193
1194 int lbs_start_card(struct lbs_private *priv)
1195 {
1196         struct net_device *dev = priv->dev;
1197         int ret = -1;
1198
1199         lbs_deb_enter(LBS_DEB_MAIN);
1200
1201         /* poke the firmware */
1202         ret = lbs_setup_firmware(priv);
1203         if (ret)
1204                 goto done;
1205
1206         /* init 802.11d */
1207         lbs_init_11d(priv);
1208
1209         if (register_netdev(dev)) {
1210                 lbs_pr_err("cannot register ethX device\n");
1211                 goto done;
1212         }
1213         if (device_create_file(&dev->dev, &dev_attr_lbs_rtap))
1214                 lbs_pr_err("cannot register lbs_rtap attribute\n");
1215
1216         lbs_update_channel(priv);
1217
1218         /* 5.0.16p0 is known to NOT support any mesh */
1219         if (priv->fwrelease > 0x05001000) {
1220                 /* Enable mesh, if supported, and work out which TLV it uses.
1221                    0x100 + 291 is an unofficial value used in 5.110.20.pXX
1222                    0x100 + 37 is the official value used in 5.110.21.pXX
1223                    but we check them in that order because 20.pXX doesn't
1224                    give an error -- it just silently fails. */
1225
1226                 /* 5.110.20.pXX firmware will fail the command if the channel
1227                    doesn't match the existing channel. But only if the TLV
1228                    is correct. If the channel is wrong, _BOTH_ versions will
1229                    give an error to 0x100+291, and allow 0x100+37 to succeed.
1230                    It's just that 5.110.20.pXX will not have done anything
1231                    useful */
1232
1233                 priv->mesh_tlv = 0x100 + 291;
1234                 if (lbs_mesh_config(priv, 1, priv->curbssparams.channel)) {
1235                         priv->mesh_tlv = 0x100 + 37;
1236                         if (lbs_mesh_config(priv, 1, priv->curbssparams.channel))
1237                                 priv->mesh_tlv = 0;
1238                 }
1239                 if (priv->mesh_tlv) {
1240                         lbs_add_mesh(priv);
1241
1242                         if (device_create_file(&dev->dev, &dev_attr_lbs_mesh))
1243                                 lbs_pr_err("cannot register lbs_mesh attribute\n");
1244                 }
1245         }
1246
1247         lbs_debugfs_init_one(priv, dev);
1248
1249         lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
1250
1251         ret = 0;
1252
1253 done:
1254         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1255         return ret;
1256 }
1257 EXPORT_SYMBOL_GPL(lbs_start_card);
1258
1259
1260 int lbs_stop_card(struct lbs_private *priv)
1261 {
1262         struct net_device *dev = priv->dev;
1263         int ret = -1;
1264         struct cmd_ctrl_node *cmdnode;
1265         unsigned long flags;
1266
1267         lbs_deb_enter(LBS_DEB_MAIN);
1268
1269         netif_stop_queue(priv->dev);
1270         netif_carrier_off(priv->dev);
1271
1272         lbs_debugfs_remove_one(priv);
1273         device_remove_file(&dev->dev, &dev_attr_lbs_rtap);
1274         if (priv->mesh_tlv)
1275                 device_remove_file(&dev->dev, &dev_attr_lbs_mesh);
1276
1277         /* Flush pending command nodes */
1278         spin_lock_irqsave(&priv->driver_lock, flags);
1279         list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
1280                 cmdnode->result = -ENOENT;
1281                 cmdnode->cmdwaitqwoken = 1;
1282                 wake_up_interruptible(&cmdnode->cmdwait_q);
1283         }
1284         spin_unlock_irqrestore(&priv->driver_lock, flags);
1285
1286         unregister_netdev(dev);
1287
1288         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1289         return ret;
1290 }
1291 EXPORT_SYMBOL_GPL(lbs_stop_card);
1292
1293
1294 /**
1295  * @brief This function adds mshX interface
1296  *
1297  *  @param priv    A pointer to the struct lbs_private structure
1298  *  @return        0 if successful, -X otherwise
1299  */
1300 static int lbs_add_mesh(struct lbs_private *priv)
1301 {
1302         struct net_device *mesh_dev = NULL;
1303         int ret = 0;
1304
1305         lbs_deb_enter(LBS_DEB_MESH);
1306
1307         /* Allocate a virtual mesh device */
1308         if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
1309                 lbs_deb_mesh("init mshX device failed\n");
1310                 ret = -ENOMEM;
1311                 goto done;
1312         }
1313         mesh_dev->priv = priv;
1314         priv->mesh_dev = mesh_dev;
1315
1316         mesh_dev->open = lbs_dev_open;
1317         mesh_dev->hard_start_xmit = lbs_hard_start_xmit;
1318         mesh_dev->stop = lbs_mesh_stop;
1319         mesh_dev->get_stats = lbs_get_stats;
1320         mesh_dev->set_mac_address = lbs_set_mac_address;
1321         mesh_dev->ethtool_ops = &lbs_ethtool_ops;
1322         memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
1323                         sizeof(priv->dev->dev_addr));
1324
1325         SET_NETDEV_DEV(priv->mesh_dev, priv->dev->dev.parent);
1326
1327 #ifdef  WIRELESS_EXT
1328         mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
1329 #endif
1330         /* Register virtual mesh interface */
1331         ret = register_netdev(mesh_dev);
1332         if (ret) {
1333                 lbs_pr_err("cannot register mshX virtual interface\n");
1334                 goto err_free;
1335         }
1336
1337         ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1338         if (ret)
1339                 goto err_unregister;
1340
1341         /* Everything successful */
1342         ret = 0;
1343         goto done;
1344
1345 err_unregister:
1346         unregister_netdev(mesh_dev);
1347
1348 err_free:
1349         free_netdev(mesh_dev);
1350
1351 done:
1352         lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1353         return ret;
1354 }
1355
1356 static void lbs_remove_mesh(struct lbs_private *priv)
1357 {
1358         struct net_device *mesh_dev;
1359
1360
1361         mesh_dev = priv->mesh_dev;
1362         if (!mesh_dev)
1363                 return;
1364
1365         lbs_deb_enter(LBS_DEB_MESH);
1366         netif_stop_queue(mesh_dev);
1367         netif_carrier_off(priv->mesh_dev);
1368         sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1369         unregister_netdev(mesh_dev);
1370         priv->mesh_dev = NULL;
1371         free_netdev(mesh_dev);
1372         lbs_deb_leave(LBS_DEB_MESH);
1373 }
1374
1375 /**
1376  *  @brief This function finds the CFP in
1377  *  region_cfp_table based on region and band parameter.
1378  *
1379  *  @param region  The region code
1380  *  @param band    The band
1381  *  @param cfp_no  A pointer to CFP number
1382  *  @return        A pointer to CFP
1383  */
1384 struct chan_freq_power *lbs_get_region_cfp_table(u8 region, int *cfp_no)
1385 {
1386         int i, end;
1387
1388         lbs_deb_enter(LBS_DEB_MAIN);
1389
1390         end = ARRAY_SIZE(region_cfp_table);
1391
1392         for (i = 0; i < end ; i++) {
1393                 lbs_deb_main("region_cfp_table[i].region=%d\n",
1394                         region_cfp_table[i].region);
1395                 if (region_cfp_table[i].region == region) {
1396                         *cfp_no = region_cfp_table[i].cfp_no_BG;
1397                         lbs_deb_leave(LBS_DEB_MAIN);
1398                         return region_cfp_table[i].cfp_BG;
1399                 }
1400         }
1401
1402         lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1403         return NULL;
1404 }
1405
1406 int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band)
1407 {
1408         int ret = 0;
1409         int i = 0;
1410
1411         struct chan_freq_power *cfp;
1412         int cfp_no;
1413
1414         lbs_deb_enter(LBS_DEB_MAIN);
1415
1416         memset(priv->region_channel, 0, sizeof(priv->region_channel));
1417
1418         cfp = lbs_get_region_cfp_table(region, &cfp_no);
1419         if (cfp != NULL) {
1420                 priv->region_channel[i].nrcfp = cfp_no;
1421                 priv->region_channel[i].CFP = cfp;
1422         } else {
1423                 lbs_deb_main("wrong region code %#x in band B/G\n",
1424                        region);
1425                 ret = -1;
1426                 goto out;
1427         }
1428         priv->region_channel[i].valid = 1;
1429         priv->region_channel[i].region = region;
1430         priv->region_channel[i].band = band;
1431         i++;
1432 out:
1433         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1434         return ret;
1435 }
1436
1437 /**
1438  *  @brief This function handles the interrupt. it will change PS
1439  *  state if applicable. it will wake up main_thread to handle
1440  *  the interrupt event as well.
1441  *
1442  *  @param dev     A pointer to net_device structure
1443  *  @return        n/a
1444  */
1445 void lbs_interrupt(struct lbs_private *priv)
1446 {
1447         lbs_deb_enter(LBS_DEB_THREAD);
1448
1449         lbs_deb_thread("lbs_interrupt: intcounter=%d\n", priv->intcounter);
1450         priv->intcounter++;
1451         if (priv->psstate == PS_STATE_SLEEP)
1452                 priv->psstate = PS_STATE_AWAKE;
1453         wake_up_interruptible(&priv->waitq);
1454
1455         lbs_deb_leave(LBS_DEB_THREAD);
1456 }
1457 EXPORT_SYMBOL_GPL(lbs_interrupt);
1458
1459 static int __init lbs_init_module(void)
1460 {
1461         lbs_deb_enter(LBS_DEB_MAIN);
1462         memset(&confirm_sleep, 0, sizeof(confirm_sleep));
1463         confirm_sleep.hdr.command = cpu_to_le16(CMD_802_11_PS_MODE);
1464         confirm_sleep.hdr.size = cpu_to_le16(sizeof(confirm_sleep));
1465         confirm_sleep.action = cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
1466         lbs_debugfs_init();
1467         lbs_deb_leave(LBS_DEB_MAIN);
1468         return 0;
1469 }
1470
1471 static void __exit lbs_exit_module(void)
1472 {
1473         lbs_deb_enter(LBS_DEB_MAIN);
1474         lbs_debugfs_remove();
1475         lbs_deb_leave(LBS_DEB_MAIN);
1476 }
1477
1478 /*
1479  * rtap interface support fuctions
1480  */
1481
1482 static int lbs_rtap_open(struct net_device *dev)
1483 {
1484         /* Yes, _stop_ the queue. Because we don't support injection */
1485         lbs_deb_enter(LBS_DEB_MAIN);
1486         netif_carrier_off(dev);
1487         netif_stop_queue(dev);
1488         lbs_deb_leave(LBS_DEB_LEAVE);
1489         return 0;
1490 }
1491
1492 static int lbs_rtap_stop(struct net_device *dev)
1493 {
1494         lbs_deb_enter(LBS_DEB_MAIN);
1495         lbs_deb_leave(LBS_DEB_MAIN);
1496         return 0;
1497 }
1498
1499 static int lbs_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1500 {
1501         netif_stop_queue(dev);
1502         return NETDEV_TX_BUSY;
1503 }
1504
1505 static struct net_device_stats *lbs_rtap_get_stats(struct net_device *dev)
1506 {
1507         struct lbs_private *priv = dev->priv;
1508         lbs_deb_enter(LBS_DEB_NET);
1509         return &priv->stats;
1510 }
1511
1512
1513 static void lbs_remove_rtap(struct lbs_private *priv)
1514 {
1515         lbs_deb_enter(LBS_DEB_MAIN);
1516         if (priv->rtap_net_dev == NULL)
1517                 return;
1518         unregister_netdev(priv->rtap_net_dev);
1519         free_netdev(priv->rtap_net_dev);
1520         priv->rtap_net_dev = NULL;
1521         lbs_deb_leave(LBS_DEB_MAIN);
1522 }
1523
1524 static int lbs_add_rtap(struct lbs_private *priv)
1525 {
1526         int ret = 0;
1527         struct net_device *rtap_dev;
1528
1529         lbs_deb_enter(LBS_DEB_MAIN);
1530         if (priv->rtap_net_dev) {
1531                 ret = -EPERM;
1532                 goto out;
1533         }
1534
1535         rtap_dev = alloc_netdev(0, "rtap%d", ether_setup);
1536         if (rtap_dev == NULL) {
1537                 ret = -ENOMEM;
1538                 goto out;
1539         }
1540
1541         memcpy(rtap_dev->dev_addr, priv->current_addr, ETH_ALEN);
1542         rtap_dev->type = ARPHRD_IEEE80211_RADIOTAP;
1543         rtap_dev->open = lbs_rtap_open;
1544         rtap_dev->stop = lbs_rtap_stop;
1545         rtap_dev->get_stats = lbs_rtap_get_stats;
1546         rtap_dev->hard_start_xmit = lbs_rtap_hard_start_xmit;
1547         rtap_dev->set_multicast_list = lbs_set_multicast_list;
1548         rtap_dev->priv = priv;
1549
1550         ret = register_netdev(rtap_dev);
1551         if (ret) {
1552                 free_netdev(rtap_dev);
1553                 goto out;
1554         }
1555         priv->rtap_net_dev = rtap_dev;
1556
1557 out:
1558         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1559         return ret;
1560 }
1561
1562 #ifndef CONFIG_IEEE80211
1563 const char *escape_essid(const char *essid, u8 essid_len)
1564 {
1565         static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
1566         const char *s = essid;
1567         char *d = escaped;
1568
1569         if (ieee80211_is_empty_essid(essid, essid_len)) {
1570                 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
1571                 return escaped;
1572         }
1573
1574         essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
1575         while (essid_len--) {
1576                 if (*s == '\0') {
1577                         *d++ = '\\';
1578                         *d++ = '0';
1579                         s++;
1580                 } else {
1581                         *d++ = *s++;
1582                 }
1583         }
1584         *d = '\0';
1585         return escaped;
1586 }
1587 #endif
1588
1589 module_init(lbs_init_module);
1590 module_exit(lbs_exit_module);
1591
1592 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1593 MODULE_AUTHOR("Marvell International Ltd.");
1594 MODULE_LICENSE("GPL");