err.no 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/freezer.h>
  10 #include <linux/etherdevice.h>
  11 #include <linux/netdevice.h>
  12 #include <linux/if_arp.h>
  13 #include <linux/kthread.h>
  14
  15 #include <net/iw_handler.h>
  16 #include <net/ieee80211.h>
  17
  18 #include "host.h"
  19 #include "decl.h"
  20 #include "dev.h"
  21 #include "wext.h"
  22 #include "debugfs.h"
  23 #include "assoc.h"
  24 #include "join.h"
  25 #include "cmd.h"
  26
  27 #define DRIVER_RELEASE_VERSION "323.p0"
  28 const char lbs_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
  29 #ifdef  DEBUG
  30     "-dbg"
  31 #endif
  32     "";
  33
  34
  35 /* Module parameters */
  36 unsigned int lbs_debug;
  37 EXPORT_SYMBOL_GPL(lbs_debug);
  38 module_param_named(libertas_debug, lbs_debug, int, 0644);
  39
  40
  41 #define LBS_TX_PWR_DEFAULT              20      /*100mW */
  42 #define LBS_TX_PWR_US_DEFAULT           20      /*100mW */
  43 #define LBS_TX_PWR_JP_DEFAULT           16      /*50mW */
  44 #define LBS_TX_PWR_FR_DEFAULT           20      /*100mW */
  45 #define LBS_TX_PWR_EMEA_DEFAULT 20      /*100mW */
  46
  47 /* Format { channel, frequency (MHz), maxtxpower } */
  48 /* band: 'B/G', region: USA FCC/Canada IC */
  49 static struct chan_freq_power channel_freq_power_US_BG[] = {
  50         {1, 2412, LBS_TX_PWR_US_DEFAULT},
  51         {2, 2417, LBS_TX_PWR_US_DEFAULT},
  52         {3, 2422, LBS_TX_PWR_US_DEFAULT},
  53         {4, 2427, LBS_TX_PWR_US_DEFAULT},
  54         {5, 2432, LBS_TX_PWR_US_DEFAULT},
  55         {6, 2437, LBS_TX_PWR_US_DEFAULT},
  56         {7, 2442, LBS_TX_PWR_US_DEFAULT},
  57         {8, 2447, LBS_TX_PWR_US_DEFAULT},
  58         {9, 2452, LBS_TX_PWR_US_DEFAULT},
  59         {10, 2457, LBS_TX_PWR_US_DEFAULT},
  60         {11, 2462, LBS_TX_PWR_US_DEFAULT}
  61 };
  62
  63 /* band: 'B/G', region: Europe ETSI */
  64 static struct chan_freq_power channel_freq_power_EU_BG[] = {
  65         {1, 2412, LBS_TX_PWR_EMEA_DEFAULT},
  66         {2, 2417, LBS_TX_PWR_EMEA_DEFAULT},
  67         {3, 2422, LBS_TX_PWR_EMEA_DEFAULT},
  68         {4, 2427, LBS_TX_PWR_EMEA_DEFAULT},
  69         {5, 2432, LBS_TX_PWR_EMEA_DEFAULT},
  70         {6, 2437, LBS_TX_PWR_EMEA_DEFAULT},
  71         {7, 2442, LBS_TX_PWR_EMEA_DEFAULT},
  72         {8, 2447, LBS_TX_PWR_EMEA_DEFAULT},
  73         {9, 2452, LBS_TX_PWR_EMEA_DEFAULT},
  74         {10, 2457, LBS_TX_PWR_EMEA_DEFAULT},
  75         {11, 2462, LBS_TX_PWR_EMEA_DEFAULT},
  76         {12, 2467, LBS_TX_PWR_EMEA_DEFAULT},
  77         {13, 2472, LBS_TX_PWR_EMEA_DEFAULT}
  78 };
  79
  80 /* band: 'B/G', region: Spain */
  81 static struct chan_freq_power channel_freq_power_SPN_BG[] = {
  82         {10, 2457, LBS_TX_PWR_DEFAULT},
  83         {11, 2462, LBS_TX_PWR_DEFAULT}
  84 };
  85
  86 /* band: 'B/G', region: France */
  87 static struct chan_freq_power channel_freq_power_FR_BG[] = {
  88         {10, 2457, LBS_TX_PWR_FR_DEFAULT},
  89         {11, 2462, LBS_TX_PWR_FR_DEFAULT},
  90         {12, 2467, LBS_TX_PWR_FR_DEFAULT},
  91         {13, 2472, LBS_TX_PWR_FR_DEFAULT}
  92 };
  93
  94 /* band: 'B/G', region: Japan */
  95 static struct chan_freq_power channel_freq_power_JPN_BG[] = {
  96         {1, 2412, LBS_TX_PWR_JP_DEFAULT},
  97         {2, 2417, LBS_TX_PWR_JP_DEFAULT},
  98         {3, 2422, LBS_TX_PWR_JP_DEFAULT},
  99         {4, 2427, LBS_TX_PWR_JP_DEFAULT},
 100         {5, 2432, LBS_TX_PWR_JP_DEFAULT},
 101         {6, 2437, LBS_TX_PWR_JP_DEFAULT},
 102         {7, 2442, LBS_TX_PWR_JP_DEFAULT},
 103         {8, 2447, LBS_TX_PWR_JP_DEFAULT},
 104         {9, 2452, LBS_TX_PWR_JP_DEFAULT},
 105         {10, 2457, LBS_TX_PWR_JP_DEFAULT},
 106         {11, 2462, LBS_TX_PWR_JP_DEFAULT},
 107         {12, 2467, LBS_TX_PWR_JP_DEFAULT},
 108         {13, 2472, LBS_TX_PWR_JP_DEFAULT},
 109         {14, 2484, LBS_TX_PWR_JP_DEFAULT}
 110 };
 111
 112 /**
 113  * the structure for channel, frequency and power
 114  */
 115 struct region_cfp_table {
 116         u8 region;
 117         struct chan_freq_power *cfp_BG;
 118         int cfp_no_BG;
 119 };
 120
 121 /**
 122  * the structure for the mapping between region and CFP
 123  */
 124 static struct region_cfp_table region_cfp_table[] = {
 125         {0x10,                  /*US FCC */
 126          channel_freq_power_US_BG,
 127          ARRAY_SIZE(channel_freq_power_US_BG),
 128          }
 129         ,
 130         {0x20,                  /*CANADA IC */
 131          channel_freq_power_US_BG,
 132          ARRAY_SIZE(channel_freq_power_US_BG),
 133          }
 134         ,
 135         {0x30, /*EU*/ channel_freq_power_EU_BG,
 136          ARRAY_SIZE(channel_freq_power_EU_BG),
 137          }
 138         ,
 139         {0x31, /*SPAIN*/ channel_freq_power_SPN_BG,
 140          ARRAY_SIZE(channel_freq_power_SPN_BG),
 141          }
 142         ,
 143         {0x32, /*FRANCE*/ channel_freq_power_FR_BG,
 144          ARRAY_SIZE(channel_freq_power_FR_BG),
 145          }
 146         ,
 147         {0x40, /*JAPAN*/ channel_freq_power_JPN_BG,
 148          ARRAY_SIZE(channel_freq_power_JPN_BG),
 149          }
 150         ,
 151 /*Add new region here */
 152 };
 153
 154 /**
 155  * the table to keep region code
 156  */
 157 u16 lbs_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
 158     { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
 159
 160 /**
 161  * 802.11b/g supported bitrates (in 500Kb/s units)
 162  */
 163 u8 lbs_bg_rates[MAX_RATES] =
 164     { 0x02, 0x04, 0x0b, 0x16, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
 165 0x00, 0x00 };
 166
 167 /**
 168  * FW rate table.  FW refers to rates by their index in this table, not by the
 169  * rate value itself.  Values of 0x00 are
 170  * reserved positions.
 171  */
 172 static u8 fw_data_rates[MAX_RATES] =
 173     { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,
 174       0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00
 175 };
 176
 177 /**
 178  *  @brief use index to get the data rate
 179  *
 180  *  @param idx                The index of data rate
 181  *  @return                     data rate or 0
 182  */
 183 u32 lbs_fw_index_to_data_rate(u8 idx)
 184 {
 185         if (idx >= sizeof(fw_data_rates))
 186                 idx = 0;
 187         return fw_data_rates[idx];
 188 }
 189
 190 /**
 191  *  @brief use rate to get the index
 192  *
 193  *  @param rate                 data rate
 194  *  @return                     index or 0
 195  */
 196 u8 lbs_data_rate_to_fw_index(u32 rate)
 197 {
 198         u8 i;
 199
 200         if (!rate)
 201                 return 0;
 202
 203         for (i = 0; i < sizeof(fw_data_rates); i++) {
 204                 if (rate == fw_data_rates[i])
 205                         return i;
 206         }
 207         return 0;
 208 }
 209
 210 /**
 211  * Attributes exported through sysfs
 212  */
 213
 214 /**
 215  * @brief Get function for sysfs attribute anycast_mask
 216  */
 217 static ssize_t lbs_anycast_get(struct device *dev,
 218                 struct device_attribute *attr, char * buf)
 219 {
 220         struct lbs_private *priv = to_net_dev(dev)->priv;
 221         struct cmd_ds_mesh_access mesh_access;
 222         int ret;
 223
 224         memset(&mesh_access, 0, sizeof(mesh_access));
 225
 226         ret = lbs_mesh_access(priv, CMD_ACT_MESH_GET_ANYCAST, &mesh_access);
 227         if (ret)
 228                 return ret;
 229
 230         return snprintf(buf, 12, "0x%X\n", le32_to_cpu(mesh_access.data[0]));
 231 }
 232
 233 /**
 234  * @brief Set function for sysfs attribute anycast_mask
 235  */
 236 static ssize_t lbs_anycast_set(struct device *dev,
 237                 struct device_attribute *attr, const char * buf, size_t count)
 238 {
 239         struct lbs_private *priv = to_net_dev(dev)->priv;
 240         struct cmd_ds_mesh_access mesh_access;
 241         uint32_t datum;
 242         int ret;
 243
 244         memset(&mesh_access, 0, sizeof(mesh_access));
 245         sscanf(buf, "%x", &datum);
 246         mesh_access.data[0] = cpu_to_le32(datum);
 247
 248         ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_ANYCAST, &mesh_access);
 249         if (ret)
 250                 return ret;
 251
 252         return strlen(buf);
 253 }
 254
 255 static int lbs_add_rtap(struct lbs_private *priv);
 256 static void lbs_remove_rtap(struct lbs_private *priv);
 257 static int lbs_add_mesh(struct lbs_private *priv);
 258 static void lbs_remove_mesh(struct lbs_private *priv);
 259
 260
 261 /**
 262  * Get function for sysfs attribute rtap
 263  */
 264 static ssize_t lbs_rtap_get(struct device *dev,
 265                 struct device_attribute *attr, char * buf)
 266 {
 267         struct lbs_private *priv = to_net_dev(dev)->priv;
 268         return snprintf(buf, 5, "0x%X\n", priv->monitormode);
 269 }
 270
 271 /**
 272  *  Set function for sysfs attribute rtap
 273  */
 274 static ssize_t lbs_rtap_set(struct device *dev,
 275                 struct device_attribute *attr, const char * buf, size_t count)
 276 {
 277         int monitor_mode;
 278         struct lbs_private *priv = to_net_dev(dev)->priv;
 279
 280         sscanf(buf, "%x", &monitor_mode);
 281         if (monitor_mode != LBS_MONITOR_OFF) {
 282                 if(priv->monitormode == monitor_mode)
 283                         return strlen(buf);
 284                 if (priv->monitormode == LBS_MONITOR_OFF) {
 285                         if (priv->infra_open || priv->mesh_open)
 286                                 return -EBUSY;
 287                         if (priv->mode == IW_MODE_INFRA)
 288                                 lbs_send_deauthentication(priv);
 289                         else if (priv->mode == IW_MODE_ADHOC)
 290                                 lbs_stop_adhoc_network(priv);
 291                         lbs_add_rtap(priv);
 292                 }
 293                 priv->monitormode = monitor_mode;
 294         }
 295
 296         else {
 297                 if (priv->monitormode == LBS_MONITOR_OFF)
 298                         return strlen(buf);
 299                 priv->monitormode = LBS_MONITOR_OFF;
 300                 lbs_remove_rtap(priv);
 301
 302                 if (priv->currenttxskb) {
 303                         dev_kfree_skb_any(priv->currenttxskb);
 304                         priv->currenttxskb = NULL;
 305                 }
 306
 307                 /* Wake queues, command thread, etc. */
 308                 lbs_host_to_card_done(priv);
 309         }
 310
 311         lbs_prepare_and_send_command(priv,
 312                         CMD_802_11_MONITOR_MODE, CMD_ACT_SET,
 313                         CMD_OPTION_WAITFORRSP, 0, &priv->monitormode);
 314         return strlen(buf);
 315 }
 316
 317 /**
 318  * lbs_rtap attribute to be exported per ethX interface
 319  * through sysfs (/sys/class/net/ethX/lbs_rtap)
 320  */
 321 static DEVICE_ATTR(lbs_rtap, 0644, lbs_rtap_get, lbs_rtap_set );
 322
 323 /**
 324  * Get function for sysfs attribute mesh
 325  */
 326 static ssize_t lbs_mesh_get(struct device *dev,
 327                 struct device_attribute *attr, char * buf)
 328 {
 329         struct lbs_private *priv = to_net_dev(dev)->priv;
 330         return snprintf(buf, 5, "0x%X\n", !!priv->mesh_dev);
 331 }
 332
 333 /**
 334  *  Set function for sysfs attribute mesh
 335  */
 336 static ssize_t lbs_mesh_set(struct device *dev,
 337                 struct device_attribute *attr, const char * buf, size_t count)
 338 {
 339         struct lbs_private *priv = to_net_dev(dev)->priv;
 340         int enable;
 341         int ret;
 342
 343         sscanf(buf, "%x", &enable);
 344         enable = !!enable;
 345         if (enable == !!priv->mesh_dev)
 346                 return count;
 347
 348         ret = lbs_mesh_config(priv, enable);
 349         if (ret)
 350                 return ret;
 351
 352         if (enable)
 353                 lbs_add_mesh(priv);
 354         else
 355                 lbs_remove_mesh(priv);
 356
 357         return count;
 358 }
 359
 360 /**
 361  * lbs_mesh attribute to be exported per ethX interface
 362  * through sysfs (/sys/class/net/ethX/lbs_mesh)
 363  */
 364 static DEVICE_ATTR(lbs_mesh, 0644, lbs_mesh_get, lbs_mesh_set);
 365
 366 /**
 367  * anycast_mask attribute to be exported per mshX interface
 368  * through sysfs (/sys/class/net/mshX/anycast_mask)
 369  */
 370 static DEVICE_ATTR(anycast_mask, 0644, lbs_anycast_get, lbs_anycast_set);
 371
 372 static struct attribute *lbs_mesh_sysfs_entries[] = {
 373         &dev_attr_anycast_mask.attr,
 374         NULL,
 375 };
 376
 377 static struct attribute_group lbs_mesh_attr_group = {
 378         .attrs = lbs_mesh_sysfs_entries,
 379 };
 380
 381 /**
 382  *  @brief This function opens the ethX or mshX interface
 383  *
 384  *  @param dev     A pointer to net_device structure
 385  *  @return        0 or -EBUSY if monitor mode active
 386  */
 387 static int lbs_dev_open(struct net_device *dev)
 388 {
 389         struct lbs_private *priv = (struct lbs_private *) dev->priv ;
 390         int ret = 0;
 391
 392         spin_lock_irq(&priv->driver_lock);
 393
 394         if (priv->monitormode != LBS_MONITOR_OFF) {
 395                 ret = -EBUSY;
 396                 goto out;
 397         }
 398
 399         if (dev == priv->mesh_dev) {
 400                 priv->mesh_open = 1;
 401                 priv->mesh_connect_status = LBS_CONNECTED;
 402                 netif_carrier_on(dev);
 403         } else {
 404                 priv->infra_open = 1;
 405
 406                 if (priv->connect_status == LBS_CONNECTED)
 407                         netif_carrier_on(dev);
 408                 else
 409                         netif_carrier_off(dev);
 410         }
 411
 412         if (!priv->tx_pending_len)
 413                 netif_wake_queue(dev);
 414  out:
 415
 416         spin_unlock_irq(&priv->driver_lock);
 417         return ret;
 418 }
 419
 420 /**
 421  *  @brief This function closes the mshX interface
 422  *
 423  *  @param dev     A pointer to net_device structure
 424  *  @return        0
 425  */
 426 static int lbs_mesh_stop(struct net_device *dev)
 427 {
 428         struct lbs_private *priv = (struct lbs_private *) (dev->priv);
 429
 430         spin_lock_irq(&priv->driver_lock);
 431
 432         priv->mesh_open = 0;
 433         priv->mesh_connect_status = LBS_DISCONNECTED;
 434
 435         netif_stop_queue(dev);
 436         netif_carrier_off(dev);
 437
 438         spin_unlock_irq(&priv->driver_lock);
 439         return 0;
 440 }
 441
 442 /**
 443  *  @brief This function closes the ethX interface
 444  *
 445  *  @param dev     A pointer to net_device structure
 446  *  @return        0
 447  */
 448 static int lbs_eth_stop(struct net_device *dev)
 449 {
 450         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 451
 452         spin_lock_irq(&priv->driver_lock);
 453
 454         priv->infra_open = 0;
 455
 456         netif_stop_queue(dev);
 457
 458         spin_unlock_irq(&priv->driver_lock);
 459         return 0;
 460 }
 461
 462 static void lbs_tx_timeout(struct net_device *dev)
 463 {
 464         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 465
 466         lbs_deb_enter(LBS_DEB_TX);
 467
 468         lbs_pr_err("tx watch dog timeout\n");
 469
 470         dev->trans_start = jiffies;
 471
 472         if (priv->currenttxskb) {
 473                 priv->eventcause = 0x01000000;
 474                 lbs_send_tx_feedback(priv);
 475         }
 476         /* XX: Shouldn't we also call into the hw-specific driver
 477            to kick it somehow? */
 478         lbs_host_to_card_done(priv);
 479
 480         lbs_deb_leave(LBS_DEB_TX);
 481 }
 482
 483 void lbs_host_to_card_done(struct lbs_private *priv)
 484 {
 485         unsigned long flags;
 486
 487         spin_lock_irqsave(&priv->driver_lock, flags);
 488
 489         priv->dnld_sent = DNLD_RES_RECEIVED;
 490
 491         /* Wake main thread if commands are pending */
 492         if (!priv->cur_cmd || priv->tx_pending_len > 0)
 493                 wake_up_interruptible(&priv->waitq);
 494
 495         spin_unlock_irqrestore(&priv->driver_lock, flags);
 496 }
 497 EXPORT_SYMBOL_GPL(lbs_host_to_card_done);
 498
 499 /**
 500  *  @brief This function returns the network statistics
 501  *
 502  *  @param dev     A pointer to struct lbs_private structure
 503  *  @return        A pointer to net_device_stats structure
 504  */
 505 static struct net_device_stats *lbs_get_stats(struct net_device *dev)
 506 {
 507         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 508
 509         return &priv->stats;
 510 }
 511
 512 static int lbs_set_mac_address(struct net_device *dev, void *addr)
 513 {
 514         int ret = 0;
 515         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 516         struct sockaddr *phwaddr = addr;
 517
 518         lbs_deb_enter(LBS_DEB_NET);
 519
 520         /* In case it was called from the mesh device */
 521         dev = priv->dev ;
 522
 523         memset(priv->current_addr, 0, ETH_ALEN);
 524
 525         /* dev->dev_addr is 8 bytes */
 526         lbs_deb_hex(LBS_DEB_NET, "dev->dev_addr", dev->dev_addr, ETH_ALEN);
 527
 528         lbs_deb_hex(LBS_DEB_NET, "addr", phwaddr->sa_data, ETH_ALEN);
 529         memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN);
 530
 531         ret = lbs_prepare_and_send_command(priv, CMD_802_11_MAC_ADDRESS,
 532                                     CMD_ACT_SET,
 533                                     CMD_OPTION_WAITFORRSP, 0, NULL);
 534
 535         if (ret) {
 536                 lbs_deb_net("set MAC address failed\n");
 537                 ret = -1;
 538                 goto done;
 539         }
 540
 541         lbs_deb_hex(LBS_DEB_NET, "priv->macaddr", priv->current_addr, ETH_ALEN);
 542         memcpy(dev->dev_addr, priv->current_addr, ETH_ALEN);
 543         if (priv->mesh_dev)
 544                 memcpy(priv->mesh_dev->dev_addr, priv->current_addr, ETH_ALEN);
 545
 546 done:
 547         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 548         return ret;
 549 }
 550
 551 static int lbs_copy_multicast_address(struct lbs_private *priv,
 552                                      struct net_device *dev)
 553 {
 554         int i = 0;
 555         struct dev_mc_list *mcptr = dev->mc_list;
 556
 557         for (i = 0; i < dev->mc_count; i++) {
 558                 memcpy(&priv->multicastlist[i], mcptr->dmi_addr, ETH_ALEN);
 559                 mcptr = mcptr->next;
 560         }
 561
 562         return i;
 563
 564 }
 565
 566 static void lbs_set_multicast_list(struct net_device *dev)
 567 {
 568         struct lbs_private *priv = dev->priv;
 569         int oldpacketfilter;
 570         DECLARE_MAC_BUF(mac);
 571
 572         lbs_deb_enter(LBS_DEB_NET);
 573
 574         oldpacketfilter = priv->currentpacketfilter;
 575
 576         if (dev->flags & IFF_PROMISC) {
 577                 lbs_deb_net("enable promiscuous mode\n");
 578                 priv->currentpacketfilter |=
 579                     CMD_ACT_MAC_PROMISCUOUS_ENABLE;
 580                 priv->currentpacketfilter &=
 581                     ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
 582                       CMD_ACT_MAC_MULTICAST_ENABLE);
 583         } else {
 584                 /* Multicast */
 585                 priv->currentpacketfilter &=
 586                     ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
 587
 588                 if (dev->flags & IFF_ALLMULTI || dev->mc_count >
 589                     MRVDRV_MAX_MULTICAST_LIST_SIZE) {
 590                         lbs_deb_net( "enabling all multicast\n");
 591                         priv->currentpacketfilter |=
 592                             CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
 593                         priv->currentpacketfilter &=
 594                             ~CMD_ACT_MAC_MULTICAST_ENABLE;
 595                 } else {
 596                         priv->currentpacketfilter &=
 597                             ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
 598
 599                         if (!dev->mc_count) {
 600                                 lbs_deb_net("no multicast addresses, "
 601                                        "disabling multicast\n");
 602                                 priv->currentpacketfilter &=
 603                                     ~CMD_ACT_MAC_MULTICAST_ENABLE;
 604                         } else {
 605                                 int i;
 606
 607                                 priv->currentpacketfilter |=
 608                                     CMD_ACT_MAC_MULTICAST_ENABLE;
 609
 610                                 priv->nr_of_multicastmacaddr =
 611                                     lbs_copy_multicast_address(priv, dev);
 612
 613                                 lbs_deb_net("multicast addresses: %d\n",
 614                                        dev->mc_count);
 615
 616                                 for (i = 0; i < dev->mc_count; i++) {
 617                                         lbs_deb_net("Multicast address %d:%s\n",
 618                                                i, print_mac(mac,
 619                                                priv->multicastlist[i]));
 620                                 }
 621                                 /* send multicast addresses to firmware */
 622                                 lbs_prepare_and_send_command(priv,
 623                                                       CMD_MAC_MULTICAST_ADR,
 624                                                       CMD_ACT_SET, 0, 0,
 625                                                       NULL);
 626                         }
 627                 }
 628         }
 629
 630         if (priv->currentpacketfilter != oldpacketfilter) {
 631                 lbs_set_mac_packet_filter(priv);
 632         }
 633
 634         lbs_deb_leave(LBS_DEB_NET);
 635 }
 636
 637 /**
 638  *  @brief This function handles the major jobs in the LBS driver.
 639  *  It handles all events generated by firmware, RX data received
 640  *  from firmware and TX data sent from kernel.
 641  *
 642  *  @param data    A pointer to lbs_thread structure
 643  *  @return        0
 644  */
 645 static int lbs_thread(void *data)
 646 {
 647         struct net_device *dev = data;
 648         struct lbs_private *priv = dev->priv;
 649         wait_queue_t wait;
 650         u8 ireg = 0;
 651
 652         lbs_deb_enter(LBS_DEB_THREAD);
 653
 654         init_waitqueue_entry(&wait, current);
 655
 656         set_freezable();
 657
 658         for (;;) {
 659                 int shouldsleep;
 660
 661                 lbs_deb_thread( "main-thread 111: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
 662                                 priv->intcounter, priv->currenttxskb, priv->dnld_sent);
 663
 664                 add_wait_queue(&priv->waitq, &wait);
 665                 set_current_state(TASK_INTERRUPTIBLE);
 666                 spin_lock_irq(&priv->driver_lock);
 667
 668                 if (priv->surpriseremoved)
 669                         shouldsleep = 0;        /* Bye */
 670                 else if (priv->psstate == PS_STATE_SLEEP)
 671                         shouldsleep = 1;        /* Sleep mode. Nothing we can do till it wakes */
 672                 else if (priv->intcounter)
 673                         shouldsleep = 0;        /* Interrupt pending. Deal with it now */
 674                 else if (!priv->fw_ready)
 675                         shouldsleep = 1;        /* Firmware not ready. We're waiting for it */
 676                 else if (priv->dnld_sent)
 677                         shouldsleep = 1;        /* Something is en route to the device already */
 678                 else if (priv->tx_pending_len > 0)
 679                         shouldsleep = 0;        /* We've a packet to send */
 680                 else if (priv->cur_cmd)
 681                         shouldsleep = 1;        /* Can't send a command; one already running */
 682                 else if (!list_empty(&priv->cmdpendingq))
 683                         shouldsleep = 0;        /* We have a command to send */
 684                 else
 685                         shouldsleep = 1;        /* No command */
 686
 687                 if (shouldsleep) {
 688                         lbs_deb_thread("main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
 689                                        priv->connect_status, priv->intcounter,
 690                                        priv->psmode, priv->psstate);
 691                         spin_unlock_irq(&priv->driver_lock);
 692                         schedule();
 693                 } else
 694                         spin_unlock_irq(&priv->driver_lock);
 695
 696                 lbs_deb_thread("main-thread 222 (waking up): intcounter=%d currenttxskb=%p dnld_sent=%d\n",
 697                                priv->intcounter, priv->currenttxskb, priv->dnld_sent);
 698
 699                 set_current_state(TASK_RUNNING);
 700                 remove_wait_queue(&priv->waitq, &wait);
 701                 try_to_freeze();
 702
 703                 lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
 704                                priv->intcounter, priv->currenttxskb, priv->dnld_sent);
 705
 706                 if (kthread_should_stop() || priv->surpriseremoved) {
 707                         lbs_deb_thread("main-thread: break from main thread: surpriseremoved=0x%x\n",
 708                                        priv->surpriseremoved);
 709                         break;
 710                 }
 711
 712
 713                 spin_lock_irq(&priv->driver_lock);
 714
 715                 if (priv->intcounter) {
 716                         u8 int_status;
 717
 718                         priv->intcounter = 0;
 719                         int_status = priv->hw_get_int_status(priv, &ireg);
 720
 721                         if (int_status) {
 722                                 lbs_deb_thread("main-thread: reading HOST_INT_STATUS_REG failed\n");
 723                                 spin_unlock_irq(&priv->driver_lock);
 724                                 continue;
 725                         }
 726                         priv->hisregcpy |= ireg;
 727                 }
 728
 729                 lbs_deb_thread("main-thread 444: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
 730                                priv->intcounter, priv->currenttxskb, priv->dnld_sent);
 731
 732                 /* command response? */
 733                 if (priv->hisregcpy & MRVDRV_CMD_UPLD_RDY) {
 734                         lbs_deb_thread("main-thread: cmd response ready\n");
 735
 736                         priv->hisregcpy &= ~MRVDRV_CMD_UPLD_RDY;
 737                         spin_unlock_irq(&priv->driver_lock);
 738                         lbs_process_rx_command(priv);
 739                         spin_lock_irq(&priv->driver_lock);
 740                 }
 741
 742                 /* Any Card Event */
 743                 if (priv->hisregcpy & MRVDRV_CARDEVENT) {
 744                         lbs_deb_thread("main-thread: Card Event Activity\n");
 745
 746                         priv->hisregcpy &= ~MRVDRV_CARDEVENT;
 747
 748                         if (priv->hw_read_event_cause(priv)) {
 749                                 lbs_pr_alert("main-thread: hw_read_event_cause failed\n");
 750                                 spin_unlock_irq(&priv->driver_lock);
 751                                 continue;
 752                         }
 753                         spin_unlock_irq(&priv->driver_lock);
 754                         lbs_process_event(priv);
 755                 } else
 756                         spin_unlock_irq(&priv->driver_lock);
 757
 758                 if (!priv->fw_ready)
 759                         continue;
 760
 761                 /* Check if we need to confirm Sleep Request received previously */
 762                 if (priv->psstate == PS_STATE_PRE_SLEEP &&
 763                     !priv->dnld_sent && !priv->cur_cmd) {
 764                         if (priv->connect_status == LBS_CONNECTED) {
 765                                 lbs_deb_thread("main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p dnld_sent=%d cur_cmd=%p, confirm now\n",
 766                                                priv->intcounter, priv->currenttxskb, priv->dnld_sent, priv->cur_cmd);
 767
 768                                 lbs_ps_confirm_sleep(priv, (u16) priv->psmode);
 769                         } else {
 770                                 /* workaround for firmware sending
 771                                  * deauth/linkloss event immediately
 772                                  * after sleep request; remove this
 773                                  * after firmware fixes it
 774                                  */
 775                                 priv->psstate = PS_STATE_AWAKE;
 776                                 lbs_pr_alert("main-thread: ignore PS_SleepConfirm in non-connected state\n");
 777                         }
 778                 }
 779
 780                 /* The PS state is changed during processing of Sleep Request
 781                  * event above
 782                  */
 783                 if ((priv->psstate == PS_STATE_SLEEP) ||
 784                     (priv->psstate == PS_STATE_PRE_SLEEP))
 785                         continue;
 786
 787                 /* Execute the next command */
 788                 if (!priv->dnld_sent && !priv->cur_cmd)
 789                         lbs_execute_next_command(priv);
 790
 791                 /* Wake-up command waiters which can't sleep in
 792                  * lbs_prepare_and_send_command
 793                  */
 794                 if (!list_empty(&priv->cmdpendingq))
 795                         wake_up_all(&priv->cmd_pending);
 796
 797                 spin_lock_irq(&priv->driver_lock);
 798                 if (!priv->dnld_sent && priv->tx_pending_len > 0) {
 799                         int ret = priv->hw_host_to_card(priv, MVMS_DAT,
 800                                                         priv->tx_pending_buf,
 801                                                         priv->tx_pending_len);
 802                         if (ret) {
 803                                 lbs_deb_tx("host_to_card failed %d\n", ret);
 804                                 priv->dnld_sent = DNLD_RES_RECEIVED;
 805                         }
 806                         priv->tx_pending_len = 0;
 807                         if (!priv->currenttxskb) {
 808                                 /* We can wake the queues immediately if we aren't
 809                                    waiting for TX feedback */
 810                                 if (priv->connect_status == LBS_CONNECTED)
 811                                         netif_wake_queue(priv->dev);
 812                                 if (priv->mesh_dev &&
 813                                     priv->mesh_connect_status == LBS_CONNECTED)
 814                                         netif_wake_queue(priv->mesh_dev);
 815                         }
 816                 }
 817                 spin_unlock_irq(&priv->driver_lock);
 818         }
 819
 820         del_timer(&priv->command_timer);
 821         wake_up_all(&priv->cmd_pending);
 822
 823         lbs_deb_leave(LBS_DEB_THREAD);
 824         return 0;
 825 }
 826
 827 /**
 828  *  @brief This function downloads firmware image, gets
 829  *  HW spec from firmware and set basic parameters to
 830  *  firmware.
 831  *
 832  *  @param priv    A pointer to struct lbs_private structure
 833  *  @return        0 or -1
 834  */
 835 static int lbs_setup_firmware(struct lbs_private *priv)
 836 {
 837         int ret = -1;
 838
 839         lbs_deb_enter(LBS_DEB_FW);
 840
 841         /*
 842          * Read MAC address from HW
 843          */
 844         memset(priv->current_addr, 0xff, ETH_ALEN);
 845         ret = lbs_update_hw_spec(priv);
 846         if (ret) {
 847                 ret = -1;
 848                 goto done;
 849         }
 850
 851         lbs_set_mac_packet_filter(priv);
 852
 853         ret = lbs_get_data_rate(priv);
 854         if (ret < 0) {
 855                 ret = -1;
 856                 goto done;
 857         }
 858
 859         ret = 0;
 860 done:
 861         lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
 862         return ret;
 863 }
 864
 865 /**
 866  *  This function handles the timeout of command sending.
 867  *  It will re-send the same command again.
 868  */
 869 static void command_timer_fn(unsigned long data)
 870 {
 871         struct lbs_private *priv = (struct lbs_private *)data;
 872         struct cmd_ctrl_node *node;
 873         unsigned long flags;
 874
 875         node = priv->cur_cmd;
 876         if (node == NULL) {
 877                 lbs_deb_fw("ptempnode empty\n");
 878                 return;
 879         }
 880
 881         if (!node->cmdbuf) {
 882                 lbs_deb_fw("cmd is NULL\n");
 883                 return;
 884         }
 885
 886         lbs_pr_info("command %x timed out\n", le16_to_cpu(node->cmdbuf->command));
 887
 888         if (!priv->fw_ready)
 889                 return;
 890
 891         spin_lock_irqsave(&priv->driver_lock, flags);
 892         priv->cur_cmd = NULL;
 893         spin_unlock_irqrestore(&priv->driver_lock, flags);
 894
 895         lbs_deb_fw("re-sending same command because of timeout\n");
 896         lbs_queue_cmd(priv, node, 0);
 897
 898         wake_up_interruptible(&priv->waitq);
 899
 900         return;
 901 }
 902
 903 static int lbs_init_adapter(struct lbs_private *priv)
 904 {
 905         size_t bufsize;
 906         int i, ret = 0;
 907
 908         /* Allocate buffer to store the BSSID list */
 909         bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
 910         priv->networks = kzalloc(bufsize, GFP_KERNEL);
 911         if (!priv->networks) {
 912                 lbs_pr_err("Out of memory allocating beacons\n");
 913                 ret = -1;
 914                 goto out;
 915         }
 916
 917         /* Initialize scan result lists */
 918         INIT_LIST_HEAD(&priv->network_free_list);
 919         INIT_LIST_HEAD(&priv->network_list);
 920         for (i = 0; i < MAX_NETWORK_COUNT; i++) {
 921                 list_add_tail(&priv->networks[i].list,
 922                               &priv->network_free_list);
 923         }
 924
 925         priv->lbs_ps_confirm_sleep.seqnum = cpu_to_le16(++priv->seqnum);
 926         priv->lbs_ps_confirm_sleep.command =
 927             cpu_to_le16(CMD_802_11_PS_MODE);
 928         priv->lbs_ps_confirm_sleep.size =
 929             cpu_to_le16(sizeof(struct PS_CMD_ConfirmSleep));
 930         priv->lbs_ps_confirm_sleep.action =
 931             cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
 932
 933         memset(priv->current_addr, 0xff, ETH_ALEN);
 934
 935         priv->connect_status = LBS_DISCONNECTED;
 936         priv->mesh_connect_status = LBS_DISCONNECTED;
 937         priv->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
 938         priv->mode = IW_MODE_INFRA;
 939         priv->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;
 940         priv->currentpacketfilter = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
 941         priv->radioon = RADIO_ON;
 942         priv->auto_rate = 1;
 943         priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
 944         priv->psmode = LBS802_11POWERMODECAM;
 945         priv->psstate = PS_STATE_FULL_POWER;
 946
 947         mutex_init(&priv->lock);
 948
 949         setup_timer(&priv->command_timer, command_timer_fn,
 950                     (unsigned long)priv);
 951
 952         INIT_LIST_HEAD(&priv->cmdfreeq);
 953         INIT_LIST_HEAD(&priv->cmdpendingq);
 954
 955         spin_lock_init(&priv->driver_lock);
 956         init_waitqueue_head(&priv->cmd_pending);
 957
 958         /* Allocate the command buffers */
 959         if (lbs_allocate_cmd_buffer(priv)) {
 960                 lbs_pr_err("Out of memory allocating command buffers\n");
 961                 ret = -1;
 962         }
 963
 964 out:
 965         return ret;
 966 }
 967
 968 static void lbs_free_adapter(struct lbs_private *priv)
 969 {
 970         lbs_deb_fw("free command buffer\n");
 971         lbs_free_cmd_buffer(priv);
 972
 973         lbs_deb_fw("free command_timer\n");
 974         del_timer(&priv->command_timer);
 975
 976         lbs_deb_fw("free scan results table\n");
 977         kfree(priv->networks);
 978         priv->networks = NULL;
 979 }
 980
 981 /**
 982  * @brief This function adds the card. it will probe the
 983  * card, allocate the lbs_priv and initialize the device.
 984  *
 985  *  @param card    A pointer to card
 986  *  @return        A pointer to struct lbs_private structure
 987  */
 988 struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
 989 {
 990         struct net_device *dev = NULL;
 991         struct lbs_private *priv = NULL;
 992
 993         lbs_deb_enter(LBS_DEB_NET);
 994
 995         /* Allocate an Ethernet device and register it */
 996         dev = alloc_etherdev(sizeof(struct lbs_private));
 997         if (!dev) {
 998                 lbs_pr_err("init ethX device failed\n");
 999                 goto done;
1000         }
1001         priv = dev->priv;
1002
1003         if (lbs_init_adapter(priv)) {
1004                 lbs_pr_err("failed to initialize adapter structure.\n");
1005                 goto err_init_adapter;
1006         }
1007
1008         priv->dev = dev;
1009         priv->card = card;
1010         priv->mesh_open = 0;
1011         priv->infra_open = 0;
1012
1013         /* Setup the OS Interface to our functions */
1014         dev->open = lbs_dev_open;
1015         dev->hard_start_xmit = lbs_hard_start_xmit;
1016         dev->stop = lbs_eth_stop;
1017         dev->set_mac_address = lbs_set_mac_address;
1018         dev->tx_timeout = lbs_tx_timeout;
1019         dev->get_stats = lbs_get_stats;
1020         dev->watchdog_timeo = 5 * HZ;
1021         dev->ethtool_ops = &lbs_ethtool_ops;
1022 #ifdef  WIRELESS_EXT
1023         dev->wireless_handlers = (struct iw_handler_def *)&lbs_handler_def;
1024 #endif
1025         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1026         dev->set_multicast_list = lbs_set_multicast_list;
1027
1028         SET_NETDEV_DEV(dev, dmdev);
1029
1030         priv->rtap_net_dev = NULL;
1031
1032         lbs_deb_thread("Starting main thread...\n");
1033         init_waitqueue_head(&priv->waitq);
1034         priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
1035         if (IS_ERR(priv->main_thread)) {
1036                 lbs_deb_thread("Error creating main thread.\n");
1037                 goto err_init_adapter;
1038         }
1039
1040         priv->work_thread = create_singlethread_workqueue("lbs_worker");
1041         INIT_DELAYED_WORK(&priv->assoc_work, lbs_association_worker);
1042         INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
1043         INIT_WORK(&priv->sync_channel, lbs_sync_channel);
1044
1045         sprintf(priv->mesh_ssid, "mesh");
1046         priv->mesh_ssid_len = 4;
1047
1048         goto done;
1049
1050 err_init_adapter:
1051         lbs_free_adapter(priv);
1052         free_netdev(dev);
1053         priv = NULL;
1054
1055 done:
1056         lbs_deb_leave_args(LBS_DEB_NET, "priv %p", priv);
1057         return priv;
1058 }
1059 EXPORT_SYMBOL_GPL(lbs_add_card);
1060
1061
1062 int lbs_remove_card(struct lbs_private *priv)
1063 {
1064         struct net_device *dev = priv->dev;
1065         union iwreq_data wrqu;
1066
1067         lbs_deb_enter(LBS_DEB_MAIN);
1068
1069         lbs_remove_mesh(priv);
1070         lbs_remove_rtap(priv);
1071
1072         dev = priv->dev;
1073
1074         cancel_delayed_work(&priv->scan_work);
1075         cancel_delayed_work(&priv->assoc_work);
1076         destroy_workqueue(priv->work_thread);
1077
1078         if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
1079                 priv->psmode = LBS802_11POWERMODECAM;
1080                 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1081         }
1082
1083         memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1084         wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1085         wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1086
1087         /* Stop the thread servicing the interrupts */
1088         priv->surpriseremoved = 1;
1089         kthread_stop(priv->main_thread);
1090
1091         lbs_free_adapter(priv);
1092
1093         priv->dev = NULL;
1094         free_netdev(dev);
1095
1096         lbs_deb_leave(LBS_DEB_MAIN);
1097         return 0;
1098 }
1099 EXPORT_SYMBOL_GPL(lbs_remove_card);
1100
1101
1102 int lbs_start_card(struct lbs_private *priv)
1103 {
1104         struct net_device *dev = priv->dev;
1105         int ret = -1;
1106
1107         lbs_deb_enter(LBS_DEB_MAIN);
1108
1109         /* poke the firmware */
1110         ret = lbs_setup_firmware(priv);
1111         if (ret)
1112                 goto done;
1113
1114         /* init 802.11d */
1115         lbs_init_11d(priv);
1116
1117         if (register_netdev(dev)) {
1118                 lbs_pr_err("cannot register ethX device\n");
1119                 goto done;
1120         }
1121         if (device_create_file(&dev->dev, &dev_attr_lbs_rtap))
1122                 lbs_pr_err("cannot register lbs_rtap attribute\n");
1123         if (device_create_file(&dev->dev, &dev_attr_lbs_mesh))
1124                 lbs_pr_err("cannot register lbs_mesh attribute\n");
1125
1126         lbs_debugfs_init_one(priv, dev);
1127
1128         lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
1129
1130         ret = 0;
1131
1132 done:
1133         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1134         return ret;
1135 }
1136 EXPORT_SYMBOL_GPL(lbs_start_card);
1137
1138
1139 int lbs_stop_card(struct lbs_private *priv)
1140 {
1141         struct net_device *dev = priv->dev;
1142         int ret = -1;
1143         struct cmd_ctrl_node *cmdnode;
1144         unsigned long flags;
1145
1146         lbs_deb_enter(LBS_DEB_MAIN);
1147
1148         netif_stop_queue(priv->dev);
1149         netif_carrier_off(priv->dev);
1150
1151         lbs_debugfs_remove_one(priv);
1152         device_remove_file(&dev->dev, &dev_attr_lbs_rtap);
1153         device_remove_file(&dev->dev, &dev_attr_lbs_mesh);
1154
1155         /* Flush pending command nodes */
1156         spin_lock_irqsave(&priv->driver_lock, flags);
1157         list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
1158                 cmdnode->cmdwaitqwoken = 1;
1159                 wake_up_interruptible(&cmdnode->cmdwait_q);
1160         }
1161         spin_unlock_irqrestore(&priv->driver_lock, flags);
1162
1163         unregister_netdev(dev);
1164
1165         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1166         return ret;
1167 }
1168 EXPORT_SYMBOL_GPL(lbs_stop_card);
1169
1170
1171 /**
1172  * @brief This function adds mshX interface
1173  *
1174  *  @param priv    A pointer to the struct lbs_private structure
1175  *  @return        0 if successful, -X otherwise
1176  */
1177 static int lbs_add_mesh(struct lbs_private *priv)
1178 {
1179         struct net_device *mesh_dev = NULL;
1180         int ret = 0;
1181
1182         lbs_deb_enter(LBS_DEB_MESH);
1183
1184         /* Allocate a virtual mesh device */
1185         if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
1186                 lbs_deb_mesh("init mshX device failed\n");
1187                 ret = -ENOMEM;
1188                 goto done;
1189         }
1190         mesh_dev->priv = priv;
1191         priv->mesh_dev = mesh_dev;
1192
1193         mesh_dev->open = lbs_dev_open;
1194         mesh_dev->hard_start_xmit = lbs_hard_start_xmit;
1195         mesh_dev->stop = lbs_mesh_stop;
1196         mesh_dev->get_stats = lbs_get_stats;
1197         mesh_dev->set_mac_address = lbs_set_mac_address;
1198         mesh_dev->ethtool_ops = &lbs_ethtool_ops;
1199         memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
1200                         sizeof(priv->dev->dev_addr));
1201
1202         SET_NETDEV_DEV(priv->mesh_dev, priv->dev->dev.parent);
1203
1204 #ifdef  WIRELESS_EXT
1205         mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
1206 #endif
1207         /* Register virtual mesh interface */
1208         ret = register_netdev(mesh_dev);
1209         if (ret) {
1210                 lbs_pr_err("cannot register mshX virtual interface\n");
1211                 goto err_free;
1212         }
1213
1214         ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1215         if (ret)
1216                 goto err_unregister;
1217
1218         /* Everything successful */
1219         ret = 0;
1220         goto done;
1221
1222 err_unregister:
1223         unregister_netdev(mesh_dev);
1224
1225 err_free:
1226         free_netdev(mesh_dev);
1227
1228 done:
1229         lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1230         return ret;
1231 }
1232 EXPORT_SYMBOL_GPL(lbs_add_mesh);
1233
1234
1235 static void lbs_remove_mesh(struct lbs_private *priv)
1236 {
1237         struct net_device *mesh_dev;
1238
1239         lbs_deb_enter(LBS_DEB_MAIN);
1240
1241         if (!priv)
1242                 goto out;
1243
1244         mesh_dev = priv->mesh_dev;
1245         if (!mesh_dev)
1246                 goto out;
1247
1248         netif_stop_queue(mesh_dev);
1249         netif_carrier_off(priv->mesh_dev);
1250
1251         sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1252         unregister_netdev(mesh_dev);
1253
1254         priv->mesh_dev = NULL;
1255         free_netdev(mesh_dev);
1256
1257 out:
1258         lbs_deb_leave(LBS_DEB_MAIN);
1259 }
1260 EXPORT_SYMBOL_GPL(lbs_remove_mesh);
1261
1262 /**
1263  *  @brief This function finds the CFP in
1264  *  region_cfp_table based on region and band parameter.
1265  *
1266  *  @param region  The region code
1267  *  @param band    The band
1268  *  @param cfp_no  A pointer to CFP number
1269  *  @return        A pointer to CFP
1270  */
1271 struct chan_freq_power *lbs_get_region_cfp_table(u8 region, u8 band, int *cfp_no)
1272 {
1273         int i, end;
1274
1275         lbs_deb_enter(LBS_DEB_MAIN);
1276
1277         end = ARRAY_SIZE(region_cfp_table);
1278
1279         for (i = 0; i < end ; i++) {
1280                 lbs_deb_main("region_cfp_table[i].region=%d\n",
1281                         region_cfp_table[i].region);
1282                 if (region_cfp_table[i].region == region) {
1283                         *cfp_no = region_cfp_table[i].cfp_no_BG;
1284                         lbs_deb_leave(LBS_DEB_MAIN);
1285                         return region_cfp_table[i].cfp_BG;
1286                 }
1287         }
1288
1289         lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1290         return NULL;
1291 }
1292
1293 int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band)
1294 {
1295         int ret = 0;
1296         int i = 0;
1297
1298         struct chan_freq_power *cfp;
1299         int cfp_no;
1300
1301         lbs_deb_enter(LBS_DEB_MAIN);
1302
1303         memset(priv->region_channel, 0, sizeof(priv->region_channel));
1304
1305         {
1306                 cfp = lbs_get_region_cfp_table(region, band, &cfp_no);
1307                 if (cfp != NULL) {
1308                         priv->region_channel[i].nrcfp = cfp_no;
1309                         priv->region_channel[i].CFP = cfp;
1310                 } else {
1311                         lbs_deb_main("wrong region code %#x in band B/G\n",
1312                                region);
1313                         ret = -1;
1314                         goto out;
1315                 }
1316                 priv->region_channel[i].valid = 1;
1317                 priv->region_channel[i].region = region;
1318                 priv->region_channel[i].band = band;
1319                 i++;
1320         }
1321 out:
1322         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1323         return ret;
1324 }
1325
1326 /**
1327  *  @brief This function handles the interrupt. it will change PS
1328  *  state if applicable. it will wake up main_thread to handle
1329  *  the interrupt event as well.
1330  *
1331  *  @param dev     A pointer to net_device structure
1332  *  @return        n/a
1333  */
1334 void lbs_interrupt(struct lbs_private *priv)
1335 {
1336         lbs_deb_enter(LBS_DEB_THREAD);
1337
1338         lbs_deb_thread("lbs_interrupt: intcounter=%d\n", priv->intcounter);
1339
1340         if (spin_trylock(&priv->driver_lock)) {
1341                 spin_unlock(&priv->driver_lock);
1342                 printk(KERN_CRIT "%s called without driver_lock held\n", __func__);
1343                 WARN_ON(1);
1344         }
1345
1346         priv->intcounter++;
1347
1348         if (priv->psstate == PS_STATE_SLEEP)
1349                 priv->psstate = PS_STATE_AWAKE;
1350
1351         wake_up_interruptible(&priv->waitq);
1352
1353         lbs_deb_leave(LBS_DEB_THREAD);
1354 }
1355 EXPORT_SYMBOL_GPL(lbs_interrupt);
1356
1357 int lbs_reset_device(struct lbs_private *priv)
1358 {
1359         int ret;
1360
1361         lbs_deb_enter(LBS_DEB_MAIN);
1362         ret = lbs_prepare_and_send_command(priv, CMD_802_11_RESET,
1363                                     CMD_ACT_HALT, 0, 0, NULL);
1364         msleep_interruptible(10);
1365
1366         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1367         return ret;
1368 }
1369 EXPORT_SYMBOL_GPL(lbs_reset_device);
1370
1371 static int __init lbs_init_module(void)
1372 {
1373         lbs_deb_enter(LBS_DEB_MAIN);
1374         lbs_debugfs_init();
1375         lbs_deb_leave(LBS_DEB_MAIN);
1376         return 0;
1377 }
1378
1379 static void __exit lbs_exit_module(void)
1380 {
1381         lbs_deb_enter(LBS_DEB_MAIN);
1382
1383         lbs_debugfs_remove();
1384
1385         lbs_deb_leave(LBS_DEB_MAIN);
1386 }
1387
1388 /*
1389  * rtap interface support fuctions
1390  */
1391
1392 static int lbs_rtap_open(struct net_device *dev)
1393 {
1394         /* Yes, _stop_ the queue. Because we don't support injection */
1395         netif_carrier_off(dev);
1396         netif_stop_queue(dev);
1397         return 0;
1398 }
1399
1400 static int lbs_rtap_stop(struct net_device *dev)
1401 {
1402         return 0;
1403 }
1404
1405 static int lbs_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1406 {
1407         netif_stop_queue(dev);
1408         return NETDEV_TX_BUSY;
1409 }
1410
1411 static struct net_device_stats *lbs_rtap_get_stats(struct net_device *dev)
1412 {
1413         struct lbs_private *priv = dev->priv;
1414         return &priv->stats;
1415 }
1416
1417
1418 static void lbs_remove_rtap(struct lbs_private *priv)
1419 {
1420         if (priv->rtap_net_dev == NULL)
1421                 return;
1422         unregister_netdev(priv->rtap_net_dev);
1423         free_netdev(priv->rtap_net_dev);
1424         priv->rtap_net_dev = NULL;
1425 }
1426
1427 static int lbs_add_rtap(struct lbs_private *priv)
1428 {
1429         int rc = 0;
1430         struct net_device *rtap_dev;
1431
1432         if (priv->rtap_net_dev)
1433                 return -EPERM;
1434
1435         rtap_dev = alloc_netdev(0, "rtap%d", ether_setup);
1436         if (rtap_dev == NULL)
1437                 return -ENOMEM;
1438
1439         memcpy(rtap_dev->dev_addr, priv->current_addr, ETH_ALEN);
1440         rtap_dev->type = ARPHRD_IEEE80211_RADIOTAP;
1441         rtap_dev->open = lbs_rtap_open;
1442         rtap_dev->stop = lbs_rtap_stop;
1443         rtap_dev->get_stats = lbs_rtap_get_stats;
1444         rtap_dev->hard_start_xmit = lbs_rtap_hard_start_xmit;
1445         rtap_dev->set_multicast_list = lbs_set_multicast_list;
1446         rtap_dev->priv = priv;
1447
1448         rc = register_netdev(rtap_dev);
1449         if (rc) {
1450                 free_netdev(rtap_dev);
1451                 return rc;
1452         }
1453         priv->rtap_net_dev = rtap_dev;
1454
1455         return 0;
1456 }
1457
1458
1459 module_init(lbs_init_module);
1460 module_exit(lbs_exit_module);
1461
1462 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1463 MODULE_AUTHOR("Marvell International Ltd.");
1464 MODULE_LICENSE("GPL");