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 != LBS_MONITOR_OFF) {
 281                 if(priv->monitormode == monitor_mode)
 282                         return strlen(buf);
 283                 if (priv->monitormode == LBS_MONITOR_OFF) {
 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 == LBS_MONITOR_OFF)
 297                         return strlen(buf);
 298                 priv->monitormode = LBS_MONITOR_OFF;
 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 != LBS_MONITOR_OFF) {
 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
 535         lbs_deb_enter(LBS_DEB_NET);
 536
 537         /* In case it was called from the mesh device */
 538         dev = priv->dev ;
 539
 540         memset(priv->current_addr, 0, ETH_ALEN);
 541
 542         /* dev->dev_addr is 8 bytes */
 543         lbs_deb_hex(LBS_DEB_NET, "dev->dev_addr", dev->dev_addr, ETH_ALEN);
 544
 545         lbs_deb_hex(LBS_DEB_NET, "addr", phwaddr->sa_data, ETH_ALEN);
 546         memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN);
 547
 548         ret = lbs_prepare_and_send_command(priv, CMD_802_11_MAC_ADDRESS,
 549                                     CMD_ACT_SET,
 550                                     CMD_OPTION_WAITFORRSP, 0, NULL);
 551
 552         if (ret) {
 553                 lbs_deb_net("set MAC address failed\n");
 554                 ret = -1;
 555                 goto done;
 556         }
 557
 558         lbs_deb_hex(LBS_DEB_NET, "priv->macaddr", priv->current_addr, ETH_ALEN);
 559         memcpy(dev->dev_addr, priv->current_addr, ETH_ALEN);
 560         if (priv->mesh_dev)
 561                 memcpy(priv->mesh_dev->dev_addr, priv->current_addr, ETH_ALEN);
 562
 563 done:
 564         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 565         return ret;
 566 }
 567
 568 static int lbs_copy_multicast_address(struct lbs_private *priv,
 569                                      struct net_device *dev)
 570 {
 571         int i = 0;
 572         struct dev_mc_list *mcptr = dev->mc_list;
 573
 574         for (i = 0; i < dev->mc_count; i++) {
 575                 memcpy(&priv->multicastlist[i], mcptr->dmi_addr, ETH_ALEN);
 576                 mcptr = mcptr->next;
 577         }
 578         return i;
 579 }
 580
 581 static void lbs_set_multicast_list(struct net_device *dev)
 582 {
 583         struct lbs_private *priv = dev->priv;
 584         int oldpacketfilter;
 585         DECLARE_MAC_BUF(mac);
 586
 587         lbs_deb_enter(LBS_DEB_NET);
 588
 589         oldpacketfilter = priv->currentpacketfilter;
 590
 591         if (dev->flags & IFF_PROMISC) {
 592                 lbs_deb_net("enable promiscuous mode\n");
 593                 priv->currentpacketfilter |=
 594                     CMD_ACT_MAC_PROMISCUOUS_ENABLE;
 595                 priv->currentpacketfilter &=
 596                     ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
 597                       CMD_ACT_MAC_MULTICAST_ENABLE);
 598         } else {
 599                 /* Multicast */
 600                 priv->currentpacketfilter &=
 601                     ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
 602
 603                 if (dev->flags & IFF_ALLMULTI || dev->mc_count >
 604                     MRVDRV_MAX_MULTICAST_LIST_SIZE) {
 605                         lbs_deb_net( "enabling all multicast\n");
 606                         priv->currentpacketfilter |=
 607                             CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
 608                         priv->currentpacketfilter &=
 609                             ~CMD_ACT_MAC_MULTICAST_ENABLE;
 610                 } else {
 611                         priv->currentpacketfilter &=
 612                             ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
 613
 614                         if (!dev->mc_count) {
 615                                 lbs_deb_net("no multicast addresses, "
 616                                        "disabling multicast\n");
 617                                 priv->currentpacketfilter &=
 618                                     ~CMD_ACT_MAC_MULTICAST_ENABLE;
 619                         } else {
 620                                 int i;
 621
 622                                 priv->currentpacketfilter |=
 623                                     CMD_ACT_MAC_MULTICAST_ENABLE;
 624
 625                                 priv->nr_of_multicastmacaddr =
 626                                     lbs_copy_multicast_address(priv, dev);
 627
 628                                 lbs_deb_net("multicast addresses: %d\n",
 629                                        dev->mc_count);
 630
 631                                 for (i = 0; i < dev->mc_count; i++) {
 632                                         lbs_deb_net("Multicast address %d: %s\n",
 633                                                i, print_mac(mac,
 634                                                priv->multicastlist[i]));
 635                                 }
 636                                 /* send multicast addresses to firmware */
 637                                 lbs_prepare_and_send_command(priv,
 638                                                       CMD_MAC_MULTICAST_ADR,
 639                                                       CMD_ACT_SET, 0, 0,
 640                                                       NULL);
 641                         }
 642                 }
 643         }
 644
 645         if (priv->currentpacketfilter != oldpacketfilter) {
 646                 lbs_set_mac_packet_filter(priv);
 647         }
 648
 649         lbs_deb_leave(LBS_DEB_NET);
 650 }
 651
 652 /**
 653  *  @brief This function handles the major jobs in the LBS driver.
 654  *  It handles all events generated by firmware, RX data received
 655  *  from firmware and TX data sent from kernel.
 656  *
 657  *  @param data    A pointer to lbs_thread structure
 658  *  @return        0
 659  */
 660 static int lbs_thread(void *data)
 661 {
 662         struct net_device *dev = data;
 663         struct lbs_private *priv = dev->priv;
 664         wait_queue_t wait;
 665         u8 ireg = 0;
 666
 667         lbs_deb_enter(LBS_DEB_THREAD);
 668
 669         init_waitqueue_entry(&wait, current);
 670
 671         for (;;) {
 672                 int shouldsleep;
 673
 674                 lbs_deb_thread( "main-thread 111: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
 675                                 priv->intcounter, priv->currenttxskb, priv->dnld_sent);
 676
 677                 add_wait_queue(&priv->waitq, &wait);
 678                 set_current_state(TASK_INTERRUPTIBLE);
 679                 spin_lock_irq(&priv->driver_lock);
 680
 681                 if (kthread_should_stop())
 682                         shouldsleep = 0;        /* Bye */
 683                 else if (priv->surpriseremoved)
 684                         shouldsleep = 1;        /* We need to wait until we're _told_ to die */
 685                 else if (priv->psstate == PS_STATE_SLEEP)
 686                         shouldsleep = 1;        /* Sleep mode. Nothing we can do till it wakes */
 687                 else if (priv->intcounter)
 688                         shouldsleep = 0;        /* Interrupt pending. Deal with it now */
 689                 else if (priv->cmd_timed_out)
 690                         shouldsleep = 0;        /* Command timed out. Recover */
 691                 else if (!priv->fw_ready)
 692                         shouldsleep = 1;        /* Firmware not ready. We're waiting for it */
 693                 else if (priv->dnld_sent)
 694                         shouldsleep = 1;        /* Something is en route to the device already */
 695                 else if (priv->tx_pending_len > 0)
 696                         shouldsleep = 0;        /* We've a packet to send */
 697                 else if (priv->cur_cmd)
 698                         shouldsleep = 1;        /* Can't send a command; one already running */
 699                 else if (!list_empty(&priv->cmdpendingq))
 700                         shouldsleep = 0;        /* We have a command to send */
 701                 else
 702                         shouldsleep = 1;        /* No command */
 703
 704                 if (shouldsleep) {
 705                         lbs_deb_thread("main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
 706                                        priv->connect_status, priv->intcounter,
 707                                        priv->psmode, priv->psstate);
 708                         spin_unlock_irq(&priv->driver_lock);
 709                         schedule();
 710                 } else
 711                         spin_unlock_irq(&priv->driver_lock);
 712
 713                 lbs_deb_thread("main-thread 222 (waking up): intcounter=%d currenttxskb=%p dnld_sent=%d\n",
 714                                priv->intcounter, priv->currenttxskb, priv->dnld_sent);
 715
 716                 set_current_state(TASK_RUNNING);
 717                 remove_wait_queue(&priv->waitq, &wait);
 718
 719                 lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
 720                                priv->intcounter, priv->currenttxskb, priv->dnld_sent);
 721
 722                 if (kthread_should_stop()) {
 723                         lbs_deb_thread("main-thread: break from main thread\n");
 724                         break;
 725                 }
 726
 727                 if (priv->surpriseremoved) {
 728                         lbs_deb_thread("adapter removed; waiting to die...\n");
 729                         continue;
 730                 }
 731
 732                 spin_lock_irq(&priv->driver_lock);
 733
 734                 if (priv->intcounter) {
 735                         u8 int_status;
 736
 737                         priv->intcounter = 0;
 738                         int_status = priv->hw_get_int_status(priv, &ireg);
 739
 740                         if (int_status) {
 741                                 lbs_deb_thread("main-thread: reading HOST_INT_STATUS_REG failed\n");
 742                                 spin_unlock_irq(&priv->driver_lock);
 743                                 continue;
 744                         }
 745                         priv->hisregcpy |= ireg;
 746                 }
 747
 748                 lbs_deb_thread("main-thread 444: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
 749                                priv->intcounter, priv->currenttxskb, priv->dnld_sent);
 750
 751                 /* command response? */
 752                 if (priv->hisregcpy & MRVDRV_CMD_UPLD_RDY) {
 753                         lbs_deb_thread("main-thread: cmd response ready\n");
 754
 755                         priv->hisregcpy &= ~MRVDRV_CMD_UPLD_RDY;
 756                         spin_unlock_irq(&priv->driver_lock);
 757                         lbs_process_rx_command(priv);
 758                         spin_lock_irq(&priv->driver_lock);
 759                 }
 760
 761                 if (priv->cmd_timed_out && priv->cur_cmd) {
 762                         struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
 763
 764                         if (++priv->nr_retries > 10) {
 765                                 lbs_pr_info("Excessive timeouts submitting command %x\n",
 766                                             le16_to_cpu(cmdnode->cmdbuf->command));
 767                                 lbs_complete_command(priv, cmdnode, -ETIMEDOUT);
 768                                 priv->nr_retries = 0;
 769                         } else {
 770                                 priv->cur_cmd = NULL;
 771                                 lbs_pr_info("requeueing command %x due to timeout (#%d)\n",
 772                                             le16_to_cpu(cmdnode->cmdbuf->command), priv->nr_retries);
 773
 774                                 /* Stick it back at the _top_ of the pending queue
 775                                    for immediate resubmission */
 776                                 list_add(&cmdnode->list, &priv->cmdpendingq);
 777                         }
 778                 }
 779                 priv->cmd_timed_out = 0;
 780
 781                 /* Any Card Event */
 782                 if (priv->hisregcpy & MRVDRV_CARDEVENT) {
 783                         lbs_deb_thread("main-thread: Card Event Activity\n");
 784
 785                         priv->hisregcpy &= ~MRVDRV_CARDEVENT;
 786
 787                         if (priv->hw_read_event_cause(priv)) {
 788                                 lbs_pr_alert("main-thread: hw_read_event_cause failed\n");
 789                                 spin_unlock_irq(&priv->driver_lock);
 790                                 continue;
 791                         }
 792                         spin_unlock_irq(&priv->driver_lock);
 793                         lbs_process_event(priv);
 794                 } else
 795                         spin_unlock_irq(&priv->driver_lock);
 796
 797                 if (!priv->fw_ready)
 798                         continue;
 799
 800                 /* Check if we need to confirm Sleep Request received previously */
 801                 if (priv->psstate == PS_STATE_PRE_SLEEP &&
 802                     !priv->dnld_sent && !priv->cur_cmd) {
 803                         if (priv->connect_status == LBS_CONNECTED) {
 804                                 lbs_deb_thread("main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p dnld_sent=%d cur_cmd=%p, confirm now\n",
 805                                                priv->intcounter, priv->currenttxskb, priv->dnld_sent, priv->cur_cmd);
 806
 807                                 lbs_ps_confirm_sleep(priv, (u16) priv->psmode);
 808                         } else {
 809                                 /* workaround for firmware sending
 810                                  * deauth/linkloss event immediately
 811                                  * after sleep request; remove this
 812                                  * after firmware fixes it
 813                                  */
 814                                 priv->psstate = PS_STATE_AWAKE;
 815                                 lbs_pr_alert("main-thread: ignore PS_SleepConfirm in non-connected state\n");
 816                         }
 817                 }
 818
 819                 /* The PS state is changed during processing of Sleep Request
 820                  * event above
 821                  */
 822                 if ((priv->psstate == PS_STATE_SLEEP) ||
 823                     (priv->psstate == PS_STATE_PRE_SLEEP))
 824                         continue;
 825
 826                 /* Execute the next command */
 827                 if (!priv->dnld_sent && !priv->cur_cmd)
 828                         lbs_execute_next_command(priv);
 829
 830                 /* Wake-up command waiters which can't sleep in
 831                  * lbs_prepare_and_send_command
 832                  */
 833                 if (!list_empty(&priv->cmdpendingq))
 834                         wake_up_all(&priv->cmd_pending);
 835
 836                 spin_lock_irq(&priv->driver_lock);
 837                 if (!priv->dnld_sent && priv->tx_pending_len > 0) {
 838                         int ret = priv->hw_host_to_card(priv, MVMS_DAT,
 839                                                         priv->tx_pending_buf,
 840                                                         priv->tx_pending_len);
 841                         if (ret) {
 842                                 lbs_deb_tx("host_to_card failed %d\n", ret);
 843                                 priv->dnld_sent = DNLD_RES_RECEIVED;
 844                         }
 845                         priv->tx_pending_len = 0;
 846                         if (!priv->currenttxskb) {
 847                                 /* We can wake the queues immediately if we aren't
 848                                    waiting for TX feedback */
 849                                 if (priv->connect_status == LBS_CONNECTED)
 850                                         netif_wake_queue(priv->dev);
 851                                 if (priv->mesh_dev &&
 852                                     priv->mesh_connect_status == LBS_CONNECTED)
 853                                         netif_wake_queue(priv->mesh_dev);
 854                         }
 855                 }
 856                 spin_unlock_irq(&priv->driver_lock);
 857         }
 858
 859         del_timer(&priv->command_timer);
 860         wake_up_all(&priv->cmd_pending);
 861
 862         lbs_deb_leave(LBS_DEB_THREAD);
 863         return 0;
 864 }
 865
 866 static int lbs_suspend_callback(struct lbs_private *priv, unsigned long dummy,
 867                                 struct cmd_header *cmd)
 868 {
 869         lbs_deb_enter(LBS_DEB_FW);
 870
 871         netif_device_detach(priv->dev);
 872         if (priv->mesh_dev)
 873                 netif_device_detach(priv->mesh_dev);
 874
 875         priv->fw_ready = 0;
 876         lbs_deb_leave(LBS_DEB_FW);
 877         return 0;
 878 }
 879
 880 int lbs_suspend(struct lbs_private *priv)
 881 {
 882         struct cmd_header cmd;
 883         int ret;
 884
 885         lbs_deb_enter(LBS_DEB_FW);
 886
 887         if (priv->wol_criteria == 0xffffffff) {
 888                 lbs_pr_info("Suspend attempt without configuring wake params!\n");
 889                 return -EINVAL;
 890         }
 891
 892         memset(&cmd, 0, sizeof(cmd));
 893
 894         ret = __lbs_cmd(priv, CMD_802_11_HOST_SLEEP_ACTIVATE, &cmd,
 895                         sizeof(cmd), lbs_suspend_callback, 0);
 896         if (ret)
 897                 lbs_pr_info("HOST_SLEEP_ACTIVATE failed: %d\n", ret);
 898
 899         lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
 900         return ret;
 901 }
 902 EXPORT_SYMBOL_GPL(lbs_suspend);
 903
 904 int lbs_resume(struct lbs_private *priv)
 905 {
 906         lbs_deb_enter(LBS_DEB_FW);
 907
 908         priv->fw_ready = 1;
 909
 910         /* Firmware doesn't seem to give us RX packets any more
 911            until we send it some command. Might as well update */
 912         lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
 913                                      0, 0, NULL);
 914
 915         netif_device_attach(priv->dev);
 916         if (priv->mesh_dev)
 917                 netif_device_attach(priv->mesh_dev);
 918
 919         lbs_deb_leave(LBS_DEB_FW);
 920         return 0;
 921 }
 922 EXPORT_SYMBOL_GPL(lbs_resume);
 923
 924 /**
 925  *  @brief This function downloads firmware image, gets
 926  *  HW spec from firmware and set basic parameters to
 927  *  firmware.
 928  *
 929  *  @param priv    A pointer to struct lbs_private structure
 930  *  @return        0 or -1
 931  */
 932 static int lbs_setup_firmware(struct lbs_private *priv)
 933 {
 934         int ret = -1;
 935
 936         lbs_deb_enter(LBS_DEB_FW);
 937
 938         /*
 939          * Read MAC address from HW
 940          */
 941         memset(priv->current_addr, 0xff, ETH_ALEN);
 942         ret = lbs_update_hw_spec(priv);
 943         if (ret) {
 944                 ret = -1;
 945                 goto done;
 946         }
 947
 948         lbs_set_mac_packet_filter(priv);
 949
 950         ret = lbs_get_data_rate(priv);
 951         if (ret < 0) {
 952                 ret = -1;
 953                 goto done;
 954         }
 955
 956         ret = 0;
 957 done:
 958         lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
 959         return ret;
 960 }
 961
 962 /**
 963  *  This function handles the timeout of command sending.
 964  *  It will re-send the same command again.
 965  */
 966 static void command_timer_fn(unsigned long data)
 967 {
 968         struct lbs_private *priv = (struct lbs_private *)data;
 969         unsigned long flags;
 970
 971         lbs_deb_enter(LBS_DEB_CMD);
 972         spin_lock_irqsave(&priv->driver_lock, flags);
 973
 974         if (!priv->cur_cmd) {
 975                 lbs_pr_info("Command timer expired; no pending command\n");
 976                 goto out;
 977         }
 978
 979         lbs_pr_info("Command %x timed out\n", le16_to_cpu(priv->cur_cmd->cmdbuf->command));
 980
 981         priv->cmd_timed_out = 1;
 982         wake_up_interruptible(&priv->waitq);
 983 out:
 984         spin_unlock_irqrestore(&priv->driver_lock, flags);
 985         lbs_deb_leave(LBS_DEB_CMD);
 986 }
 987
 988 static void lbs_sync_channel_worker(struct work_struct *work)
 989 {
 990         struct lbs_private *priv = container_of(work, struct lbs_private,
 991                 sync_channel);
 992
 993         lbs_deb_enter(LBS_DEB_MAIN);
 994         if (lbs_update_channel(priv))
 995                 lbs_pr_info("Channel synchronization failed.");
 996         lbs_deb_leave(LBS_DEB_MAIN);
 997 }
 998
 999
1000 static int lbs_init_adapter(struct lbs_private *priv)
1001 {
1002         size_t bufsize;
1003         int i, ret = 0;
1004
1005         lbs_deb_enter(LBS_DEB_MAIN);
1006
1007         /* Allocate buffer to store the BSSID list */
1008         bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
1009         priv->networks = kzalloc(bufsize, GFP_KERNEL);
1010         if (!priv->networks) {
1011                 lbs_pr_err("Out of memory allocating beacons\n");
1012                 ret = -1;
1013                 goto out;
1014         }
1015
1016         /* Initialize scan result lists */
1017         INIT_LIST_HEAD(&priv->network_free_list);
1018         INIT_LIST_HEAD(&priv->network_list);
1019         for (i = 0; i < MAX_NETWORK_COUNT; i++) {
1020                 list_add_tail(&priv->networks[i].list,
1021                               &priv->network_free_list);
1022         }
1023
1024         priv->lbs_ps_confirm_sleep.seqnum = cpu_to_le16(++priv->seqnum);
1025         priv->lbs_ps_confirm_sleep.command =
1026             cpu_to_le16(CMD_802_11_PS_MODE);
1027         priv->lbs_ps_confirm_sleep.size =
1028             cpu_to_le16(sizeof(struct PS_CMD_ConfirmSleep));
1029         priv->lbs_ps_confirm_sleep.action =
1030             cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
1031
1032         memset(priv->current_addr, 0xff, ETH_ALEN);
1033
1034         priv->connect_status = LBS_DISCONNECTED;
1035         priv->mesh_connect_status = LBS_DISCONNECTED;
1036         priv->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
1037         priv->mode = IW_MODE_INFRA;
1038         priv->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;
1039         priv->currentpacketfilter = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
1040         priv->radioon = RADIO_ON;
1041         priv->auto_rate = 1;
1042         priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
1043         priv->psmode = LBS802_11POWERMODECAM;
1044         priv->psstate = PS_STATE_FULL_POWER;
1045
1046         mutex_init(&priv->lock);
1047
1048         setup_timer(&priv->command_timer, command_timer_fn,
1049                 (unsigned long)priv);
1050
1051         INIT_LIST_HEAD(&priv->cmdfreeq);
1052         INIT_LIST_HEAD(&priv->cmdpendingq);
1053
1054         spin_lock_init(&priv->driver_lock);
1055         init_waitqueue_head(&priv->cmd_pending);
1056
1057         /* Allocate the command buffers */
1058         if (lbs_allocate_cmd_buffer(priv)) {
1059                 lbs_pr_err("Out of memory allocating command buffers\n");
1060                 ret = -1;
1061         }
1062
1063 out:
1064         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1065
1066         return ret;
1067 }
1068
1069 static void lbs_free_adapter(struct lbs_private *priv)
1070 {
1071         lbs_deb_enter(LBS_DEB_MAIN);
1072
1073         lbs_free_cmd_buffer(priv);
1074         del_timer(&priv->command_timer);
1075         kfree(priv->networks);
1076         priv->networks = NULL;
1077
1078         lbs_deb_leave(LBS_DEB_MAIN);
1079 }
1080
1081 /**
1082  * @brief This function adds the card. it will probe the
1083  * card, allocate the lbs_priv and initialize the device.
1084  *
1085  *  @param card    A pointer to card
1086  *  @return        A pointer to struct lbs_private structure
1087  */
1088 struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
1089 {
1090         struct net_device *dev = NULL;
1091         struct lbs_private *priv = NULL;
1092
1093         lbs_deb_enter(LBS_DEB_MAIN);
1094
1095         /* Allocate an Ethernet device and register it */
1096         dev = alloc_etherdev(sizeof(struct lbs_private));
1097         if (!dev) {
1098                 lbs_pr_err("init ethX device failed\n");
1099                 goto done;
1100         }
1101         priv = dev->priv;
1102
1103         if (lbs_init_adapter(priv)) {
1104                 lbs_pr_err("failed to initialize adapter structure.\n");
1105                 goto err_init_adapter;
1106         }
1107
1108         priv->dev = dev;
1109         priv->card = card;
1110         priv->mesh_open = 0;
1111         priv->infra_open = 0;
1112
1113         /* Setup the OS Interface to our functions */
1114         dev->open = lbs_dev_open;
1115         dev->hard_start_xmit = lbs_hard_start_xmit;
1116         dev->stop = lbs_eth_stop;
1117         dev->set_mac_address = lbs_set_mac_address;
1118         dev->tx_timeout = lbs_tx_timeout;
1119         dev->get_stats = lbs_get_stats;
1120         dev->watchdog_timeo = 5 * HZ;
1121         dev->ethtool_ops = &lbs_ethtool_ops;
1122 #ifdef  WIRELESS_EXT
1123         dev->wireless_handlers = (struct iw_handler_def *)&lbs_handler_def;
1124 #endif
1125         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1126         dev->set_multicast_list = lbs_set_multicast_list;
1127
1128         SET_NETDEV_DEV(dev, dmdev);
1129
1130         priv->rtap_net_dev = NULL;
1131
1132         lbs_deb_thread("Starting main thread...\n");
1133         init_waitqueue_head(&priv->waitq);
1134         priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
1135         if (IS_ERR(priv->main_thread)) {
1136                 lbs_deb_thread("Error creating main thread.\n");
1137                 goto err_init_adapter;
1138         }
1139
1140         priv->work_thread = create_singlethread_workqueue("lbs_worker");
1141         INIT_DELAYED_WORK(&priv->assoc_work, lbs_association_worker);
1142         INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
1143         INIT_WORK(&priv->sync_channel, lbs_sync_channel_worker);
1144
1145         sprintf(priv->mesh_ssid, "mesh");
1146         priv->mesh_ssid_len = 4;
1147
1148         priv->wol_criteria = 0xffffffff;
1149         priv->wol_gpio = 0xff;
1150
1151         goto done;
1152
1153 err_init_adapter:
1154         lbs_free_adapter(priv);
1155         free_netdev(dev);
1156         priv = NULL;
1157
1158 done:
1159         lbs_deb_leave_args(LBS_DEB_MAIN, "priv %p", priv);
1160         return priv;
1161 }
1162 EXPORT_SYMBOL_GPL(lbs_add_card);
1163
1164
1165 int lbs_remove_card(struct lbs_private *priv)
1166 {
1167         struct net_device *dev = priv->dev;
1168         union iwreq_data wrqu;
1169
1170         lbs_deb_enter(LBS_DEB_MAIN);
1171
1172         lbs_remove_mesh(priv);
1173         lbs_remove_rtap(priv);
1174
1175         dev = priv->dev;
1176
1177         cancel_delayed_work(&priv->scan_work);
1178         cancel_delayed_work(&priv->assoc_work);
1179         destroy_workqueue(priv->work_thread);
1180
1181         if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
1182                 priv->psmode = LBS802_11POWERMODECAM;
1183                 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1184         }
1185
1186         memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1187         wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1188         wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1189
1190         /* Stop the thread servicing the interrupts */
1191         priv->surpriseremoved = 1;
1192         kthread_stop(priv->main_thread);
1193
1194         lbs_free_adapter(priv);
1195
1196         priv->dev = NULL;
1197         free_netdev(dev);
1198
1199         lbs_deb_leave(LBS_DEB_MAIN);
1200         return 0;
1201 }
1202 EXPORT_SYMBOL_GPL(lbs_remove_card);
1203
1204
1205 int lbs_start_card(struct lbs_private *priv)
1206 {
1207         struct net_device *dev = priv->dev;
1208         int ret = -1;
1209
1210         lbs_deb_enter(LBS_DEB_MAIN);
1211
1212         /* poke the firmware */
1213         ret = lbs_setup_firmware(priv);
1214         if (ret)
1215                 goto done;
1216
1217         /* init 802.11d */
1218         lbs_init_11d(priv);
1219
1220         if (register_netdev(dev)) {
1221                 lbs_pr_err("cannot register ethX device\n");
1222                 goto done;
1223         }
1224         if (device_create_file(&dev->dev, &dev_attr_lbs_rtap))
1225                 lbs_pr_err("cannot register lbs_rtap attribute\n");
1226
1227         lbs_update_channel(priv);
1228
1229         /* 5.0.16p0 is known to NOT support any mesh */
1230         if (priv->fwrelease > 0x05001000) {
1231                 /* Enable mesh, if supported, and work out which TLV it uses.
1232                    0x100 + 291 is an unofficial value used in 5.110.20.pXX
1233                    0x100 + 37 is the official value used in 5.110.21.pXX
1234                    but we check them in that order because 20.pXX doesn't
1235                    give an error -- it just silently fails. */
1236
1237                 /* 5.110.20.pXX firmware will fail the command if the channel
1238                    doesn't match the existing channel. But only if the TLV
1239                    is correct. If the channel is wrong, _BOTH_ versions will
1240                    give an error to 0x100+291, and allow 0x100+37 to succeed.
1241                    It's just that 5.110.20.pXX will not have done anything
1242                    useful */
1243
1244                 priv->mesh_tlv = 0x100 + 291;
1245                 if (lbs_mesh_config(priv, 1, priv->curbssparams.channel)) {
1246                         priv->mesh_tlv = 0x100 + 37;
1247                         if (lbs_mesh_config(priv, 1, priv->curbssparams.channel))
1248                                 priv->mesh_tlv = 0;
1249                 }
1250                 if (priv->mesh_tlv) {
1251                         lbs_add_mesh(priv);
1252
1253                         if (device_create_file(&dev->dev, &dev_attr_lbs_mesh))
1254                                 lbs_pr_err("cannot register lbs_mesh attribute\n");
1255                 }
1256         }
1257
1258         lbs_debugfs_init_one(priv, dev);
1259
1260         lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
1261
1262         ret = 0;
1263
1264 done:
1265         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1266         return ret;
1267 }
1268 EXPORT_SYMBOL_GPL(lbs_start_card);
1269
1270
1271 int lbs_stop_card(struct lbs_private *priv)
1272 {
1273         struct net_device *dev = priv->dev;
1274         int ret = -1;
1275         struct cmd_ctrl_node *cmdnode;
1276         unsigned long flags;
1277
1278         lbs_deb_enter(LBS_DEB_MAIN);
1279
1280         netif_stop_queue(priv->dev);
1281         netif_carrier_off(priv->dev);
1282
1283         lbs_debugfs_remove_one(priv);
1284         device_remove_file(&dev->dev, &dev_attr_lbs_rtap);
1285         if (priv->mesh_tlv)
1286                 device_remove_file(&dev->dev, &dev_attr_lbs_mesh);
1287
1288         /* Flush pending command nodes */
1289         spin_lock_irqsave(&priv->driver_lock, flags);
1290         list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
1291                 cmdnode->result = -ENOENT;
1292                 cmdnode->cmdwaitqwoken = 1;
1293                 wake_up_interruptible(&cmdnode->cmdwait_q);
1294         }
1295         spin_unlock_irqrestore(&priv->driver_lock, flags);
1296
1297         unregister_netdev(dev);
1298
1299         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1300         return ret;
1301 }
1302 EXPORT_SYMBOL_GPL(lbs_stop_card);
1303
1304
1305 /**
1306  * @brief This function adds mshX interface
1307  *
1308  *  @param priv    A pointer to the struct lbs_private structure
1309  *  @return        0 if successful, -X otherwise
1310  */
1311 static int lbs_add_mesh(struct lbs_private *priv)
1312 {
1313         struct net_device *mesh_dev = NULL;
1314         int ret = 0;
1315
1316         lbs_deb_enter(LBS_DEB_MESH);
1317
1318         /* Allocate a virtual mesh device */
1319         if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
1320                 lbs_deb_mesh("init mshX device failed\n");
1321                 ret = -ENOMEM;
1322                 goto done;
1323         }
1324         mesh_dev->priv = priv;
1325         priv->mesh_dev = mesh_dev;
1326
1327         mesh_dev->open = lbs_dev_open;
1328         mesh_dev->hard_start_xmit = lbs_hard_start_xmit;
1329         mesh_dev->stop = lbs_mesh_stop;
1330         mesh_dev->get_stats = lbs_get_stats;
1331         mesh_dev->set_mac_address = lbs_set_mac_address;
1332         mesh_dev->ethtool_ops = &lbs_ethtool_ops;
1333         memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
1334                         sizeof(priv->dev->dev_addr));
1335
1336         SET_NETDEV_DEV(priv->mesh_dev, priv->dev->dev.parent);
1337
1338 #ifdef  WIRELESS_EXT
1339         mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
1340 #endif
1341         /* Register virtual mesh interface */
1342         ret = register_netdev(mesh_dev);
1343         if (ret) {
1344                 lbs_pr_err("cannot register mshX virtual interface\n");
1345                 goto err_free;
1346         }
1347
1348         ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1349         if (ret)
1350                 goto err_unregister;
1351
1352         /* Everything successful */
1353         ret = 0;
1354         goto done;
1355
1356 err_unregister:
1357         unregister_netdev(mesh_dev);
1358
1359 err_free:
1360         free_netdev(mesh_dev);
1361
1362 done:
1363         lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1364         return ret;
1365 }
1366
1367 static void lbs_remove_mesh(struct lbs_private *priv)
1368 {
1369         struct net_device *mesh_dev;
1370
1371
1372         mesh_dev = priv->mesh_dev;
1373         if (!mesh_dev)
1374                 return;
1375
1376         lbs_deb_enter(LBS_DEB_MESH);
1377         netif_stop_queue(mesh_dev);
1378         netif_carrier_off(priv->mesh_dev);
1379         sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1380         unregister_netdev(mesh_dev);
1381         priv->mesh_dev = NULL;
1382         free_netdev(mesh_dev);
1383         lbs_deb_leave(LBS_DEB_MESH);
1384 }
1385
1386 /**
1387  *  @brief This function finds the CFP in
1388  *  region_cfp_table based on region and band parameter.
1389  *
1390  *  @param region  The region code
1391  *  @param band    The band
1392  *  @param cfp_no  A pointer to CFP number
1393  *  @return        A pointer to CFP
1394  */
1395 struct chan_freq_power *lbs_get_region_cfp_table(u8 region, u8 band, int *cfp_no)
1396 {
1397         int i, end;
1398
1399         lbs_deb_enter(LBS_DEB_MAIN);
1400
1401         end = ARRAY_SIZE(region_cfp_table);
1402
1403         for (i = 0; i < end ; i++) {
1404                 lbs_deb_main("region_cfp_table[i].region=%d\n",
1405                         region_cfp_table[i].region);
1406                 if (region_cfp_table[i].region == region) {
1407                         *cfp_no = region_cfp_table[i].cfp_no_BG;
1408                         lbs_deb_leave(LBS_DEB_MAIN);
1409                         return region_cfp_table[i].cfp_BG;
1410                 }
1411         }
1412
1413         lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1414         return NULL;
1415 }
1416
1417 int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band)
1418 {
1419         int ret = 0;
1420         int i = 0;
1421
1422         struct chan_freq_power *cfp;
1423         int cfp_no;
1424
1425         lbs_deb_enter(LBS_DEB_MAIN);
1426
1427         memset(priv->region_channel, 0, sizeof(priv->region_channel));
1428
1429         cfp = lbs_get_region_cfp_table(region, band, &cfp_no);
1430         if (cfp != NULL) {
1431                 priv->region_channel[i].nrcfp = cfp_no;
1432                 priv->region_channel[i].CFP = cfp;
1433         } else {
1434                 lbs_deb_main("wrong region code %#x in band B/G\n",
1435                        region);
1436                 ret = -1;
1437                 goto out;
1438         }
1439         priv->region_channel[i].valid = 1;
1440         priv->region_channel[i].region = region;
1441         priv->region_channel[i].band = band;
1442         i++;
1443 out:
1444         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1445         return ret;
1446 }
1447
1448 /**
1449  *  @brief This function handles the interrupt. it will change PS
1450  *  state if applicable. it will wake up main_thread to handle
1451  *  the interrupt event as well.
1452  *
1453  *  @param dev     A pointer to net_device structure
1454  *  @return        n/a
1455  */
1456 void lbs_interrupt(struct lbs_private *priv)
1457 {
1458         lbs_deb_enter(LBS_DEB_THREAD);
1459
1460         lbs_deb_thread("lbs_interrupt: intcounter=%d\n", priv->intcounter);
1461         priv->intcounter++;
1462         if (priv->psstate == PS_STATE_SLEEP)
1463                 priv->psstate = PS_STATE_AWAKE;
1464         wake_up_interruptible(&priv->waitq);
1465
1466         lbs_deb_leave(LBS_DEB_THREAD);
1467 }
1468 EXPORT_SYMBOL_GPL(lbs_interrupt);
1469
1470 static int __init lbs_init_module(void)
1471 {
1472         lbs_deb_enter(LBS_DEB_MAIN);
1473         lbs_debugfs_init();
1474         lbs_deb_leave(LBS_DEB_MAIN);
1475         return 0;
1476 }
1477
1478 static void __exit lbs_exit_module(void)
1479 {
1480         lbs_deb_enter(LBS_DEB_MAIN);
1481         lbs_debugfs_remove();
1482         lbs_deb_leave(LBS_DEB_MAIN);
1483 }
1484
1485 /*
1486  * rtap interface support fuctions
1487  */
1488
1489 static int lbs_rtap_open(struct net_device *dev)
1490 {
1491         /* Yes, _stop_ the queue. Because we don't support injection */
1492         lbs_deb_enter(LBS_DEB_MAIN);
1493         netif_carrier_off(dev);
1494         netif_stop_queue(dev);
1495         lbs_deb_leave(LBS_DEB_LEAVE);
1496         return 0;
1497 }
1498
1499 static int lbs_rtap_stop(struct net_device *dev)
1500 {
1501         lbs_deb_enter(LBS_DEB_MAIN);
1502         lbs_deb_leave(LBS_DEB_MAIN);
1503         return 0;
1504 }
1505
1506 static int lbs_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1507 {
1508         netif_stop_queue(dev);
1509         return NETDEV_TX_BUSY;
1510 }
1511
1512 static struct net_device_stats *lbs_rtap_get_stats(struct net_device *dev)
1513 {
1514         struct lbs_private *priv = dev->priv;
1515         lbs_deb_enter(LBS_DEB_NET);
1516         return &priv->stats;
1517 }
1518
1519
1520 static void lbs_remove_rtap(struct lbs_private *priv)
1521 {
1522         lbs_deb_enter(LBS_DEB_MAIN);
1523         if (priv->rtap_net_dev == NULL)
1524                 return;
1525         unregister_netdev(priv->rtap_net_dev);
1526         free_netdev(priv->rtap_net_dev);
1527         priv->rtap_net_dev = NULL;
1528         lbs_deb_leave(LBS_DEB_MAIN);
1529 }
1530
1531 static int lbs_add_rtap(struct lbs_private *priv)
1532 {
1533         int ret = 0;
1534         struct net_device *rtap_dev;
1535
1536         lbs_deb_enter(LBS_DEB_MAIN);
1537         if (priv->rtap_net_dev) {
1538                 ret = -EPERM;
1539                 goto out;
1540         }
1541
1542         rtap_dev = alloc_netdev(0, "rtap%d", ether_setup);
1543         if (rtap_dev == NULL) {
1544                 ret = -ENOMEM;
1545                 goto out;
1546         }
1547
1548         memcpy(rtap_dev->dev_addr, priv->current_addr, ETH_ALEN);
1549         rtap_dev->type = ARPHRD_IEEE80211_RADIOTAP;
1550         rtap_dev->open = lbs_rtap_open;
1551         rtap_dev->stop = lbs_rtap_stop;
1552         rtap_dev->get_stats = lbs_rtap_get_stats;
1553         rtap_dev->hard_start_xmit = lbs_rtap_hard_start_xmit;
1554         rtap_dev->set_multicast_list = lbs_set_multicast_list;
1555         rtap_dev->priv = priv;
1556
1557         ret = register_netdev(rtap_dev);
1558         if (ret) {
1559                 free_netdev(rtap_dev);
1560                 goto out;
1561         }
1562         priv->rtap_net_dev = rtap_dev;
1563
1564 out:
1565         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1566         return ret;
1567 }
1568
1569
1570 module_init(lbs_init_module);
1571 module_exit(lbs_exit_module);
1572
1573 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1574 MODULE_AUTHOR("Marvell International Ltd.");
1575 MODULE_LICENSE("GPL");