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

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