drivers/net/wireless/libertas/main.c

   1 /**
   2   * This file contains the major functions in WLAN
   3   * driver. It includes init, exit, open, close and main
   4   * thread etc..
   5   */
   6
   7 #include <linux/moduleparam.h>
   8 #include <linux/delay.h>
   9 #include <linux/etherdevice.h>
  10 #include <linux/netdevice.h>
  11 #include <linux/if_arp.h>
  12 #include <linux/kthread.h>
  13 #include <linux/kfifo.h>
  14 #include <linux/stddef.h>
  15 #include <linux/ieee80211.h>
  16 #include <net/iw_handler.h>
  17
  18 #include "host.h"
  19 #include "decl.h"
  20 #include "dev.h"
  21 #include "wext.h"
  22 #include "debugfs.h"
  23 #include "scan.h"
  24 #include "assoc.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 /* This global structure is used to send the confirm_sleep command as
  42  * fast as possible down to the firmware. */
  43 struct cmd_confirm_sleep confirm_sleep;
  44
  45
  46 #define LBS_TX_PWR_DEFAULT              20      /*100mW */
  47 #define LBS_TX_PWR_US_DEFAULT           20      /*100mW */
  48 #define LBS_TX_PWR_JP_DEFAULT           16      /*50mW */
  49 #define LBS_TX_PWR_FR_DEFAULT           20      /*100mW */
  50 #define LBS_TX_PWR_EMEA_DEFAULT 20      /*100mW */
  51
  52 /* Format { channel, frequency (MHz), maxtxpower } */
  53 /* band: 'B/G', region: USA FCC/Canada IC */
  54 static struct chan_freq_power channel_freq_power_US_BG[] = {
  55         {1, 2412, LBS_TX_PWR_US_DEFAULT},
  56         {2, 2417, LBS_TX_PWR_US_DEFAULT},
  57         {3, 2422, LBS_TX_PWR_US_DEFAULT},
  58         {4, 2427, LBS_TX_PWR_US_DEFAULT},
  59         {5, 2432, LBS_TX_PWR_US_DEFAULT},
  60         {6, 2437, LBS_TX_PWR_US_DEFAULT},
  61         {7, 2442, LBS_TX_PWR_US_DEFAULT},
  62         {8, 2447, LBS_TX_PWR_US_DEFAULT},
  63         {9, 2452, LBS_TX_PWR_US_DEFAULT},
  64         {10, 2457, LBS_TX_PWR_US_DEFAULT},
  65         {11, 2462, LBS_TX_PWR_US_DEFAULT}
  66 };
  67
  68 /* band: 'B/G', region: Europe ETSI */
  69 static struct chan_freq_power channel_freq_power_EU_BG[] = {
  70         {1, 2412, LBS_TX_PWR_EMEA_DEFAULT},
  71         {2, 2417, LBS_TX_PWR_EMEA_DEFAULT},
  72         {3, 2422, LBS_TX_PWR_EMEA_DEFAULT},
  73         {4, 2427, LBS_TX_PWR_EMEA_DEFAULT},
  74         {5, 2432, LBS_TX_PWR_EMEA_DEFAULT},
  75         {6, 2437, LBS_TX_PWR_EMEA_DEFAULT},
  76         {7, 2442, LBS_TX_PWR_EMEA_DEFAULT},
  77         {8, 2447, LBS_TX_PWR_EMEA_DEFAULT},
  78         {9, 2452, LBS_TX_PWR_EMEA_DEFAULT},
  79         {10, 2457, LBS_TX_PWR_EMEA_DEFAULT},
  80         {11, 2462, LBS_TX_PWR_EMEA_DEFAULT},
  81         {12, 2467, LBS_TX_PWR_EMEA_DEFAULT},
  82         {13, 2472, LBS_TX_PWR_EMEA_DEFAULT}
  83 };
  84
  85 /* band: 'B/G', region: Spain */
  86 static struct chan_freq_power channel_freq_power_SPN_BG[] = {
  87         {10, 2457, LBS_TX_PWR_DEFAULT},
  88         {11, 2462, LBS_TX_PWR_DEFAULT}
  89 };
  90
  91 /* band: 'B/G', region: France */
  92 static struct chan_freq_power channel_freq_power_FR_BG[] = {
  93         {10, 2457, LBS_TX_PWR_FR_DEFAULT},
  94         {11, 2462, LBS_TX_PWR_FR_DEFAULT},
  95         {12, 2467, LBS_TX_PWR_FR_DEFAULT},
  96         {13, 2472, LBS_TX_PWR_FR_DEFAULT}
  97 };
  98
  99 /* band: 'B/G', region: Japan */
 100 static struct chan_freq_power channel_freq_power_JPN_BG[] = {
 101         {1, 2412, LBS_TX_PWR_JP_DEFAULT},
 102         {2, 2417, LBS_TX_PWR_JP_DEFAULT},
 103         {3, 2422, LBS_TX_PWR_JP_DEFAULT},
 104         {4, 2427, LBS_TX_PWR_JP_DEFAULT},
 105         {5, 2432, LBS_TX_PWR_JP_DEFAULT},
 106         {6, 2437, LBS_TX_PWR_JP_DEFAULT},
 107         {7, 2442, LBS_TX_PWR_JP_DEFAULT},
 108         {8, 2447, LBS_TX_PWR_JP_DEFAULT},
 109         {9, 2452, LBS_TX_PWR_JP_DEFAULT},
 110         {10, 2457, LBS_TX_PWR_JP_DEFAULT},
 111         {11, 2462, LBS_TX_PWR_JP_DEFAULT},
 112         {12, 2467, LBS_TX_PWR_JP_DEFAULT},
 113         {13, 2472, LBS_TX_PWR_JP_DEFAULT},
 114         {14, 2484, LBS_TX_PWR_JP_DEFAULT}
 115 };
 116
 117 /**
 118  * the structure for channel, frequency and power
 119  */
 120 struct region_cfp_table {
 121         u8 region;
 122         struct chan_freq_power *cfp_BG;
 123         int cfp_no_BG;
 124 };
 125
 126 /**
 127  * the structure for the mapping between region and CFP
 128  */
 129 static struct region_cfp_table region_cfp_table[] = {
 130         {0x10,                  /*US FCC */
 131          channel_freq_power_US_BG,
 132          ARRAY_SIZE(channel_freq_power_US_BG),
 133          }
 134         ,
 135         {0x20,                  /*CANADA IC */
 136          channel_freq_power_US_BG,
 137          ARRAY_SIZE(channel_freq_power_US_BG),
 138          }
 139         ,
 140         {0x30, /*EU*/ channel_freq_power_EU_BG,
 141          ARRAY_SIZE(channel_freq_power_EU_BG),
 142          }
 143         ,
 144         {0x31, /*SPAIN*/ channel_freq_power_SPN_BG,
 145          ARRAY_SIZE(channel_freq_power_SPN_BG),
 146          }
 147         ,
 148         {0x32, /*FRANCE*/ channel_freq_power_FR_BG,
 149          ARRAY_SIZE(channel_freq_power_FR_BG),
 150          }
 151         ,
 152         {0x40, /*JAPAN*/ channel_freq_power_JPN_BG,
 153          ARRAY_SIZE(channel_freq_power_JPN_BG),
 154          }
 155         ,
 156 /*Add new region here */
 157 };
 158
 159 /**
 160  * the table to keep region code
 161  */
 162 u16 lbs_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
 163     { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
 164
 165 /**
 166  * 802.11b/g supported bitrates (in 500Kb/s units)
 167  */
 168 u8 lbs_bg_rates[MAX_RATES] =
 169     { 0x02, 0x04, 0x0b, 0x16, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
 170 0x00, 0x00 };
 171
 172 /**
 173  * FW rate table.  FW refers to rates by their index in this table, not by the
 174  * rate value itself.  Values of 0x00 are
 175  * reserved positions.
 176  */
 177 static u8 fw_data_rates[MAX_RATES] =
 178     { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,
 179       0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00
 180 };
 181
 182 /**
 183  *  @brief use index to get the data rate
 184  *
 185  *  @param idx                The index of data rate
 186  *  @return                     data rate or 0
 187  */
 188 u32 lbs_fw_index_to_data_rate(u8 idx)
 189 {
 190         if (idx >= sizeof(fw_data_rates))
 191                 idx = 0;
 192         return fw_data_rates[idx];
 193 }
 194
 195 /**
 196  *  @brief use rate to get the index
 197  *
 198  *  @param rate                 data rate
 199  *  @return                     index or 0
 200  */
 201 u8 lbs_data_rate_to_fw_index(u32 rate)
 202 {
 203         u8 i;
 204
 205         if (!rate)
 206                 return 0;
 207
 208         for (i = 0; i < sizeof(fw_data_rates); i++) {
 209                 if (rate == fw_data_rates[i])
 210                         return i;
 211         }
 212         return 0;
 213 }
 214
 215 /**
 216  * Attributes exported through sysfs
 217  */
 218
 219 /**
 220  * @brief Get function for sysfs attribute anycast_mask
 221  */
 222 static ssize_t lbs_anycast_get(struct device *dev,
 223                 struct device_attribute *attr, char * buf)
 224 {
 225         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 226         struct cmd_ds_mesh_access mesh_access;
 227         int ret;
 228
 229         memset(&mesh_access, 0, sizeof(mesh_access));
 230
 231         ret = lbs_mesh_access(priv, CMD_ACT_MESH_GET_ANYCAST, &mesh_access);
 232         if (ret)
 233                 return ret;
 234
 235         return snprintf(buf, 12, "0x%X\n", le32_to_cpu(mesh_access.data[0]));
 236 }
 237
 238 /**
 239  * @brief Set function for sysfs attribute anycast_mask
 240  */
 241 static ssize_t lbs_anycast_set(struct device *dev,
 242                 struct device_attribute *attr, const char * buf, size_t count)
 243 {
 244         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 245         struct cmd_ds_mesh_access mesh_access;
 246         uint32_t datum;
 247         int ret;
 248
 249         memset(&mesh_access, 0, sizeof(mesh_access));
 250         sscanf(buf, "%x", &datum);
 251         mesh_access.data[0] = cpu_to_le32(datum);
 252
 253         ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_ANYCAST, &mesh_access);
 254         if (ret)
 255                 return ret;
 256
 257         return strlen(buf);
 258 }
 259
 260 /**
 261  * @brief Get function for sysfs attribute prb_rsp_limit
 262  */
 263 static ssize_t lbs_prb_rsp_limit_get(struct device *dev,
 264                 struct device_attribute *attr, char *buf)
 265 {
 266         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 267         struct cmd_ds_mesh_access mesh_access;
 268         int ret;
 269         u32 retry_limit;
 270
 271         memset(&mesh_access, 0, sizeof(mesh_access));
 272         mesh_access.data[0] = cpu_to_le32(CMD_ACT_GET);
 273
 274         ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_GET_PRB_RSP_LIMIT,
 275                         &mesh_access);
 276         if (ret)
 277                 return ret;
 278
 279         retry_limit = le32_to_cpu(mesh_access.data[1]);
 280         return snprintf(buf, 10, "%d\n", retry_limit);
 281 }
 282
 283 /**
 284  * @brief Set function for sysfs attribute prb_rsp_limit
 285  */
 286 static ssize_t lbs_prb_rsp_limit_set(struct device *dev,
 287                 struct device_attribute *attr, const char *buf, size_t count)
 288 {
 289         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 290         struct cmd_ds_mesh_access mesh_access;
 291         int ret;
 292         unsigned long retry_limit;
 293
 294         memset(&mesh_access, 0, sizeof(mesh_access));
 295         mesh_access.data[0] = cpu_to_le32(CMD_ACT_SET);
 296
 297         if (!strict_strtoul(buf, 10, &retry_limit))
 298                 return -ENOTSUPP;
 299         if (retry_limit > 15)
 300                 return -ENOTSUPP;
 301
 302         mesh_access.data[1] = cpu_to_le32(retry_limit);
 303
 304         ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_GET_PRB_RSP_LIMIT,
 305                         &mesh_access);
 306         if (ret)
 307                 return ret;
 308
 309         return strlen(buf);
 310 }
 311
 312 static int lbs_add_rtap(struct lbs_private *priv);
 313 static void lbs_remove_rtap(struct lbs_private *priv);
 314 static int lbs_add_mesh(struct lbs_private *priv);
 315 static void lbs_remove_mesh(struct lbs_private *priv);
 316
 317
 318 /**
 319  * Get function for sysfs attribute rtap
 320  */
 321 static ssize_t lbs_rtap_get(struct device *dev,
 322                 struct device_attribute *attr, char * buf)
 323 {
 324         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 325         return snprintf(buf, 5, "0x%X\n", priv->monitormode);
 326 }
 327
 328 /**
 329  *  Set function for sysfs attribute rtap
 330  */
 331 static ssize_t lbs_rtap_set(struct device *dev,
 332                 struct device_attribute *attr, const char * buf, size_t count)
 333 {
 334         int monitor_mode;
 335         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 336
 337         sscanf(buf, "%x", &monitor_mode);
 338         if (monitor_mode) {
 339                 if (priv->monitormode == monitor_mode)
 340                         return strlen(buf);
 341                 if (!priv->monitormode) {
 342                         if (priv->infra_open || priv->mesh_open)
 343                                 return -EBUSY;
 344                         if (priv->mode == IW_MODE_INFRA)
 345                                 lbs_cmd_80211_deauthenticate(priv,
 346                                                              priv->curbssparams.bssid,
 347                                                              WLAN_REASON_DEAUTH_LEAVING);
 348                         else if (priv->mode == IW_MODE_ADHOC)
 349                                 lbs_adhoc_stop(priv);
 350                         lbs_add_rtap(priv);
 351                 }
 352                 priv->monitormode = monitor_mode;
 353         } else {
 354                 if (!priv->monitormode)
 355                         return strlen(buf);
 356                 priv->monitormode = 0;
 357                 lbs_remove_rtap(priv);
 358
 359                 if (priv->currenttxskb) {
 360                         dev_kfree_skb_any(priv->currenttxskb);
 361                         priv->currenttxskb = NULL;
 362                 }
 363
 364                 /* Wake queues, command thread, etc. */
 365                 lbs_host_to_card_done(priv);
 366         }
 367
 368         lbs_prepare_and_send_command(priv,
 369                         CMD_802_11_MONITOR_MODE, CMD_ACT_SET,
 370                         CMD_OPTION_WAITFORRSP, 0, &priv->monitormode);
 371         return strlen(buf);
 372 }
 373
 374 /**
 375  * lbs_rtap attribute to be exported per ethX interface
 376  * through sysfs (/sys/class/net/ethX/lbs_rtap)
 377  */
 378 static DEVICE_ATTR(lbs_rtap, 0644, lbs_rtap_get, lbs_rtap_set );
 379
 380 /**
 381  * Get function for sysfs attribute mesh
 382  */
 383 static ssize_t lbs_mesh_get(struct device *dev,
 384                 struct device_attribute *attr, char * buf)
 385 {
 386         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 387         return snprintf(buf, 5, "0x%X\n", !!priv->mesh_dev);
 388 }
 389
 390 /**
 391  *  Set function for sysfs attribute mesh
 392  */
 393 static ssize_t lbs_mesh_set(struct device *dev,
 394                 struct device_attribute *attr, const char * buf, size_t count)
 395 {
 396         struct lbs_private *priv = to_net_dev(dev)->ml_priv;
 397         int enable;
 398         int ret, action = CMD_ACT_MESH_CONFIG_STOP;
 399
 400         sscanf(buf, "%x", &enable);
 401         enable = !!enable;
 402         if (enable == !!priv->mesh_dev)
 403                 return count;
 404         if (enable)
 405                 action = CMD_ACT_MESH_CONFIG_START;
 406         ret = lbs_mesh_config(priv, action, priv->curbssparams.channel);
 407         if (ret)
 408                 return ret;
 409
 410         if (enable)
 411                 lbs_add_mesh(priv);
 412         else
 413                 lbs_remove_mesh(priv);
 414
 415         return count;
 416 }
 417
 418 /**
 419  * lbs_mesh attribute to be exported per ethX interface
 420  * through sysfs (/sys/class/net/ethX/lbs_mesh)
 421  */
 422 static DEVICE_ATTR(lbs_mesh, 0644, lbs_mesh_get, lbs_mesh_set);
 423
 424 /**
 425  * anycast_mask attribute to be exported per mshX interface
 426  * through sysfs (/sys/class/net/mshX/anycast_mask)
 427  */
 428 static DEVICE_ATTR(anycast_mask, 0644, lbs_anycast_get, lbs_anycast_set);
 429
 430 /**
 431  * prb_rsp_limit attribute to be exported per mshX interface
 432  * through sysfs (/sys/class/net/mshX/prb_rsp_limit)
 433  */
 434 static DEVICE_ATTR(prb_rsp_limit, 0644, lbs_prb_rsp_limit_get,
 435                 lbs_prb_rsp_limit_set);
 436
 437 static struct attribute *lbs_mesh_sysfs_entries[] = {
 438         &dev_attr_anycast_mask.attr,
 439         &dev_attr_prb_rsp_limit.attr,
 440         NULL,
 441 };
 442
 443 static struct attribute_group lbs_mesh_attr_group = {
 444         .attrs = lbs_mesh_sysfs_entries,
 445 };
 446
 447 /**
 448  *  @brief This function opens the ethX or mshX interface
 449  *
 450  *  @param dev     A pointer to net_device structure
 451  *  @return        0 or -EBUSY if monitor mode active
 452  */
 453 static int lbs_dev_open(struct net_device *dev)
 454 {
 455         struct lbs_private *priv = dev->ml_priv;
 456         int ret = 0;
 457
 458         lbs_deb_enter(LBS_DEB_NET);
 459
 460         spin_lock_irq(&priv->driver_lock);
 461
 462         if (priv->monitormode) {
 463                 ret = -EBUSY;
 464                 goto out;
 465         }
 466
 467         if (dev == priv->mesh_dev) {
 468                 priv->mesh_open = 1;
 469                 priv->mesh_connect_status = LBS_CONNECTED;
 470                 netif_carrier_on(dev);
 471         } else {
 472                 priv->infra_open = 1;
 473
 474                 if (priv->connect_status == LBS_CONNECTED)
 475                         netif_carrier_on(dev);
 476                 else
 477                         netif_carrier_off(dev);
 478         }
 479
 480         if (!priv->tx_pending_len)
 481                 netif_wake_queue(dev);
 482  out:
 483
 484         spin_unlock_irq(&priv->driver_lock);
 485         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 486         return ret;
 487 }
 488
 489 /**
 490  *  @brief This function closes the mshX interface
 491  *
 492  *  @param dev     A pointer to net_device structure
 493  *  @return        0
 494  */
 495 static int lbs_mesh_stop(struct net_device *dev)
 496 {
 497         struct lbs_private *priv = dev->ml_priv;
 498
 499         lbs_deb_enter(LBS_DEB_MESH);
 500         spin_lock_irq(&priv->driver_lock);
 501
 502         priv->mesh_open = 0;
 503         priv->mesh_connect_status = LBS_DISCONNECTED;
 504
 505         netif_stop_queue(dev);
 506         netif_carrier_off(dev);
 507
 508         spin_unlock_irq(&priv->driver_lock);
 509
 510         schedule_work(&priv->mcast_work);
 511
 512         lbs_deb_leave(LBS_DEB_MESH);
 513         return 0;
 514 }
 515
 516 /**
 517  *  @brief This function closes the ethX interface
 518  *
 519  *  @param dev     A pointer to net_device structure
 520  *  @return        0
 521  */
 522 static int lbs_eth_stop(struct net_device *dev)
 523 {
 524         struct lbs_private *priv = dev->ml_priv;
 525
 526         lbs_deb_enter(LBS_DEB_NET);
 527
 528         spin_lock_irq(&priv->driver_lock);
 529         priv->infra_open = 0;
 530         netif_stop_queue(dev);
 531         spin_unlock_irq(&priv->driver_lock);
 532
 533         schedule_work(&priv->mcast_work);
 534
 535         lbs_deb_leave(LBS_DEB_NET);
 536         return 0;
 537 }
 538
 539 static void lbs_tx_timeout(struct net_device *dev)
 540 {
 541         struct lbs_private *priv = dev->ml_priv;
 542
 543         lbs_deb_enter(LBS_DEB_TX);
 544
 545         lbs_pr_err("tx watch dog timeout\n");
 546
 547         dev->trans_start = jiffies;
 548
 549         if (priv->currenttxskb)
 550                 lbs_send_tx_feedback(priv, 0);
 551
 552         /* XX: Shouldn't we also call into the hw-specific driver
 553            to kick it somehow? */
 554         lbs_host_to_card_done(priv);
 555
 556         /* More often than not, this actually happens because the
 557            firmware has crapped itself -- rather than just a very
 558            busy medium. So send a harmless command, and if/when
 559            _that_ times out, we'll kick it in the head. */
 560         lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
 561                                      0, 0, NULL);
 562
 563         lbs_deb_leave(LBS_DEB_TX);
 564 }
 565
 566 void lbs_host_to_card_done(struct lbs_private *priv)
 567 {
 568         unsigned long flags;
 569
 570         lbs_deb_enter(LBS_DEB_THREAD);
 571
 572         spin_lock_irqsave(&priv->driver_lock, flags);
 573
 574         priv->dnld_sent = DNLD_RES_RECEIVED;
 575
 576         /* Wake main thread if commands are pending */
 577         if (!priv->cur_cmd || priv->tx_pending_len > 0)
 578                 wake_up_interruptible(&priv->waitq);
 579
 580         spin_unlock_irqrestore(&priv->driver_lock, flags);
 581         lbs_deb_leave(LBS_DEB_THREAD);
 582 }
 583 EXPORT_SYMBOL_GPL(lbs_host_to_card_done);
 584
 585 /**
 586  *  @brief This function returns the network statistics
 587  *
 588  *  @param dev     A pointer to struct lbs_private structure
 589  *  @return        A pointer to net_device_stats structure
 590  */
 591 static struct net_device_stats *lbs_get_stats(struct net_device *dev)
 592 {
 593         struct lbs_private *priv = dev->ml_priv;
 594
 595         lbs_deb_enter(LBS_DEB_NET);
 596         return &priv->stats;
 597 }
 598
 599 static int lbs_set_mac_address(struct net_device *dev, void *addr)
 600 {
 601         int ret = 0;
 602         struct lbs_private *priv = dev->ml_priv;
 603         struct sockaddr *phwaddr = addr;
 604         struct cmd_ds_802_11_mac_address cmd;
 605
 606         lbs_deb_enter(LBS_DEB_NET);
 607
 608         /* In case it was called from the mesh device */
 609         dev = priv->dev;
 610
 611         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 612         cmd.action = cpu_to_le16(CMD_ACT_SET);
 613         memcpy(cmd.macadd, phwaddr->sa_data, ETH_ALEN);
 614
 615         ret = lbs_cmd_with_response(priv, CMD_802_11_MAC_ADDRESS, &cmd);
 616         if (ret) {
 617                 lbs_deb_net("set MAC address failed\n");
 618                 goto done;
 619         }
 620
 621         memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN);
 622         memcpy(dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
 623         if (priv->mesh_dev)
 624                 memcpy(priv->mesh_dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
 625
 626 done:
 627         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 628         return ret;
 629 }
 630
 631
 632 static inline int mac_in_list(unsigned char *list, int list_len,
 633                               unsigned char *mac)
 634 {
 635         while (list_len) {
 636                 if (!memcmp(list, mac, ETH_ALEN))
 637                         return 1;
 638                 list += ETH_ALEN;
 639                 list_len--;
 640         }
 641         return 0;
 642 }
 643
 644
 645 static int lbs_add_mcast_addrs(struct cmd_ds_mac_multicast_adr *cmd,
 646                                struct net_device *dev, int nr_addrs)
 647 {
 648         int i = nr_addrs;
 649         struct dev_mc_list *mc_list;
 650
 651         if ((dev->flags & (IFF_UP|IFF_MULTICAST)) != (IFF_UP|IFF_MULTICAST))
 652                 return nr_addrs;
 653
 654         netif_addr_lock_bh(dev);
 655         for (mc_list = dev->mc_list; mc_list; mc_list = mc_list->next) {
 656                 if (mac_in_list(cmd->maclist, nr_addrs, mc_list->dmi_addr)) {
 657                         lbs_deb_net("mcast address %s:%pM skipped\n", dev->name,
 658                                     mc_list->dmi_addr);
 659                         continue;
 660                 }
 661
 662                 if (i == MRVDRV_MAX_MULTICAST_LIST_SIZE)
 663                         break;
 664                 memcpy(&cmd->maclist[6*i], mc_list->dmi_addr, ETH_ALEN);
 665                 lbs_deb_net("mcast address %s:%pM added to filter\n", dev->name,
 666                             mc_list->dmi_addr);
 667                 i++;
 668         }
 669         netif_addr_unlock_bh(dev);
 670         if (mc_list)
 671                 return -EOVERFLOW;
 672
 673         return i;
 674 }
 675
 676 static void lbs_set_mcast_worker(struct work_struct *work)
 677 {
 678         struct lbs_private *priv = container_of(work, struct lbs_private, mcast_work);
 679         struct cmd_ds_mac_multicast_adr mcast_cmd;
 680         int dev_flags;
 681         int nr_addrs;
 682         int old_mac_control = priv->mac_control;
 683
 684         lbs_deb_enter(LBS_DEB_NET);
 685
 686         dev_flags = priv->dev->flags;
 687         if (priv->mesh_dev)
 688                 dev_flags |= priv->mesh_dev->flags;
 689
 690         if (dev_flags & IFF_PROMISC) {
 691                 priv->mac_control |= CMD_ACT_MAC_PROMISCUOUS_ENABLE;
 692                 priv->mac_control &= ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
 693                                        CMD_ACT_MAC_MULTICAST_ENABLE);
 694                 goto out_set_mac_control;
 695         } else if (dev_flags & IFF_ALLMULTI) {
 696         do_allmulti:
 697                 priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
 698                 priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |
 699                                        CMD_ACT_MAC_MULTICAST_ENABLE);
 700                 goto out_set_mac_control;
 701         }
 702
 703         /* Once for priv->dev, again for priv->mesh_dev if it exists */
 704         nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->dev, 0);
 705         if (nr_addrs >= 0 && priv->mesh_dev)
 706                 nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->mesh_dev, nr_addrs);
 707         if (nr_addrs < 0)
 708                 goto do_allmulti;
 709
 710         if (nr_addrs) {
 711                 int size = offsetof(struct cmd_ds_mac_multicast_adr,
 712                                     maclist[6*nr_addrs]);
 713
 714                 mcast_cmd.action = cpu_to_le16(CMD_ACT_SET);
 715                 mcast_cmd.hdr.size = cpu_to_le16(size);
 716                 mcast_cmd.nr_of_adrs = cpu_to_le16(nr_addrs);
 717
 718                 lbs_cmd_async(priv, CMD_MAC_MULTICAST_ADR, &mcast_cmd.hdr, size);
 719
 720                 priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE;
 721         } else
 722                 priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE;
 723
 724         priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |
 725                                CMD_ACT_MAC_ALL_MULTICAST_ENABLE);
 726  out_set_mac_control:
 727         if (priv->mac_control != old_mac_control)
 728                 lbs_set_mac_control(priv);
 729
 730         lbs_deb_leave(LBS_DEB_NET);
 731 }
 732
 733 static void lbs_set_multicast_list(struct net_device *dev)
 734 {
 735         struct lbs_private *priv = dev->ml_priv;
 736
 737         schedule_work(&priv->mcast_work);
 738 }
 739
 740 /**
 741  *  @brief This function handles the major jobs in the LBS driver.
 742  *  It handles all events generated by firmware, RX data received
 743  *  from firmware and TX data sent from kernel.
 744  *
 745  *  @param data    A pointer to lbs_thread structure
 746  *  @return        0
 747  */
 748 static int lbs_thread(void *data)
 749 {
 750         struct net_device *dev = data;
 751         struct lbs_private *priv = dev->ml_priv;
 752         wait_queue_t wait;
 753
 754         lbs_deb_enter(LBS_DEB_THREAD);
 755
 756         init_waitqueue_entry(&wait, current);
 757
 758         for (;;) {
 759                 int shouldsleep;
 760                 u8 resp_idx;
 761
 762                 lbs_deb_thread("1: currenttxskb %p, dnld_sent %d\n",
 763                                 priv->currenttxskb, priv->dnld_sent);
 764
 765                 add_wait_queue(&priv->waitq, &wait);
 766                 set_current_state(TASK_INTERRUPTIBLE);
 767                 spin_lock_irq(&priv->driver_lock);
 768
 769                 if (kthread_should_stop())
 770                         shouldsleep = 0;        /* Bye */
 771                 else if (priv->surpriseremoved)
 772                         shouldsleep = 1;        /* We need to wait until we're _told_ to die */
 773                 else if (priv->psstate == PS_STATE_SLEEP)
 774                         shouldsleep = 1;        /* Sleep mode. Nothing we can do till it wakes */
 775                 else if (priv->cmd_timed_out)
 776                         shouldsleep = 0;        /* Command timed out. Recover */
 777                 else if (!priv->fw_ready)
 778                         shouldsleep = 1;        /* Firmware not ready. We're waiting for it */
 779                 else if (priv->dnld_sent)
 780                         shouldsleep = 1;        /* Something is en route to the device already */
 781                 else if (priv->tx_pending_len > 0)
 782                         shouldsleep = 0;        /* We've a packet to send */
 783                 else if (priv->resp_len[priv->resp_idx])
 784                         shouldsleep = 0;        /* We have a command response */
 785                 else if (priv->cur_cmd)
 786                         shouldsleep = 1;        /* Can't send a command; one already running */
 787                 else if (!list_empty(&priv->cmdpendingq))
 788                         shouldsleep = 0;        /* We have a command to send */
 789                 else if (__kfifo_len(priv->event_fifo))
 790                         shouldsleep = 0;        /* We have an event to process */
 791                 else
 792                         shouldsleep = 1;        /* No command */
 793
 794                 if (shouldsleep) {
 795                         lbs_deb_thread("sleeping, connect_status %d, "
 796                                 "psmode %d, psstate %d\n",
 797                                 priv->connect_status,
 798                                 priv->psmode, priv->psstate);
 799                         spin_unlock_irq(&priv->driver_lock);
 800                         schedule();
 801                 } else
 802                         spin_unlock_irq(&priv->driver_lock);
 803
 804                 lbs_deb_thread("2: currenttxskb %p, dnld_send %d\n",
 805                                priv->currenttxskb, priv->dnld_sent);
 806
 807                 set_current_state(TASK_RUNNING);
 808                 remove_wait_queue(&priv->waitq, &wait);
 809
 810                 lbs_deb_thread("3: currenttxskb %p, dnld_sent %d\n",
 811                                priv->currenttxskb, priv->dnld_sent);
 812
 813                 if (kthread_should_stop()) {
 814                         lbs_deb_thread("break from main thread\n");
 815                         break;
 816                 }
 817
 818                 if (priv->surpriseremoved) {
 819                         lbs_deb_thread("adapter removed; waiting to die...\n");
 820                         continue;
 821                 }
 822
 823                 lbs_deb_thread("4: currenttxskb %p, dnld_sent %d\n",
 824                        priv->currenttxskb, priv->dnld_sent);
 825
 826                 /* Process any pending command response */
 827                 spin_lock_irq(&priv->driver_lock);
 828                 resp_idx = priv->resp_idx;
 829                 if (priv->resp_len[resp_idx]) {
 830                         spin_unlock_irq(&priv->driver_lock);
 831                         lbs_process_command_response(priv,
 832                                 priv->resp_buf[resp_idx],
 833                                 priv->resp_len[resp_idx]);
 834                         spin_lock_irq(&priv->driver_lock);
 835                         priv->resp_len[resp_idx] = 0;
 836                 }
 837                 spin_unlock_irq(&priv->driver_lock);
 838
 839                 /* command timeout stuff */
 840                 if (priv->cmd_timed_out && priv->cur_cmd) {
 841                         struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
 842
 843                         if (++priv->nr_retries > 3) {
 844                                 lbs_pr_info("Excessive timeouts submitting "
 845                                         "command 0x%04x\n",
 846                                         le16_to_cpu(cmdnode->cmdbuf->command));
 847                                 lbs_complete_command(priv, cmdnode, -ETIMEDOUT);
 848                                 priv->nr_retries = 0;
 849                                 if (priv->reset_card)
 850                                         priv->reset_card(priv);
 851                         } else {
 852                                 priv->cur_cmd = NULL;
 853                                 priv->dnld_sent = DNLD_RES_RECEIVED;
 854                                 lbs_pr_info("requeueing command 0x%04x due "
 855                                         "to timeout (#%d)\n",
 856                                         le16_to_cpu(cmdnode->cmdbuf->command),
 857                                         priv->nr_retries);
 858
 859                                 /* Stick it back at the _top_ of the pending queue
 860                                    for immediate resubmission */
 861                                 list_add(&cmdnode->list, &priv->cmdpendingq);
 862                         }
 863                 }
 864                 priv->cmd_timed_out = 0;
 865
 866                 /* Process hardware events, e.g. card removed, link lost */
 867                 spin_lock_irq(&priv->driver_lock);
 868                 while (__kfifo_len(priv->event_fifo)) {
 869                         u32 event;
 870
 871                         __kfifo_get(priv->event_fifo, (unsigned char *) &event,
 872                                 sizeof(event));
 873                         spin_unlock_irq(&priv->driver_lock);
 874                         lbs_process_event(priv, event);
 875                         spin_lock_irq(&priv->driver_lock);
 876                 }
 877                 spin_unlock_irq(&priv->driver_lock);
 878
 879                 if (!priv->fw_ready)
 880                         continue;
 881
 882                 /* Check if we need to confirm Sleep Request received previously */
 883                 if (priv->psstate == PS_STATE_PRE_SLEEP &&
 884                     !priv->dnld_sent && !priv->cur_cmd) {
 885                         if (priv->connect_status == LBS_CONNECTED) {
 886                                 lbs_deb_thread("pre-sleep, currenttxskb %p, "
 887                                         "dnld_sent %d, cur_cmd %p\n",
 888                                         priv->currenttxskb, priv->dnld_sent,
 889                                         priv->cur_cmd);
 890
 891                                 lbs_ps_confirm_sleep(priv);
 892                         } else {
 893                                 /* workaround for firmware sending
 894                                  * deauth/linkloss event immediately
 895                                  * after sleep request; remove this
 896                                  * after firmware fixes it
 897                                  */
 898                                 priv->psstate = PS_STATE_AWAKE;
 899                                 lbs_pr_alert("ignore PS_SleepConfirm in "
 900                                         "non-connected state\n");
 901                         }
 902                 }
 903
 904                 /* The PS state is changed during processing of Sleep Request
 905                  * event above
 906                  */
 907                 if ((priv->psstate == PS_STATE_SLEEP) ||
 908                     (priv->psstate == PS_STATE_PRE_SLEEP))
 909                         continue;
 910
 911                 /* Execute the next command */
 912                 if (!priv->dnld_sent && !priv->cur_cmd)
 913                         lbs_execute_next_command(priv);
 914
 915                 /* Wake-up command waiters which can't sleep in
 916                  * lbs_prepare_and_send_command
 917                  */
 918                 if (!list_empty(&priv->cmdpendingq))
 919                         wake_up_all(&priv->cmd_pending);
 920
 921                 spin_lock_irq(&priv->driver_lock);
 922                 if (!priv->dnld_sent && priv->tx_pending_len > 0) {
 923                         int ret = priv->hw_host_to_card(priv, MVMS_DAT,
 924                                                         priv->tx_pending_buf,
 925                                                         priv->tx_pending_len);
 926                         if (ret) {
 927                                 lbs_deb_tx("host_to_card failed %d\n", ret);
 928                                 priv->dnld_sent = DNLD_RES_RECEIVED;
 929                         }
 930                         priv->tx_pending_len = 0;
 931                         if (!priv->currenttxskb) {
 932                                 /* We can wake the queues immediately if we aren't
 933                                    waiting for TX feedback */
 934                                 if (priv->connect_status == LBS_CONNECTED)
 935                                         netif_wake_queue(priv->dev);
 936                                 if (priv->mesh_dev &&
 937                                     priv->mesh_connect_status == LBS_CONNECTED)
 938                                         netif_wake_queue(priv->mesh_dev);
 939                         }
 940                 }
 941                 spin_unlock_irq(&priv->driver_lock);
 942         }
 943
 944         del_timer(&priv->command_timer);
 945         wake_up_all(&priv->cmd_pending);
 946
 947         lbs_deb_leave(LBS_DEB_THREAD);
 948         return 0;
 949 }
 950
 951 static int lbs_suspend_callback(struct lbs_private *priv, unsigned long dummy,
 952                                 struct cmd_header *cmd)
 953 {
 954         lbs_deb_enter(LBS_DEB_FW);
 955
 956         netif_device_detach(priv->dev);
 957         if (priv->mesh_dev)
 958                 netif_device_detach(priv->mesh_dev);
 959
 960         priv->fw_ready = 0;
 961         lbs_deb_leave(LBS_DEB_FW);
 962         return 0;
 963 }
 964
 965 int lbs_suspend(struct lbs_private *priv)
 966 {
 967         struct cmd_header cmd;
 968         int ret;
 969
 970         lbs_deb_enter(LBS_DEB_FW);
 971
 972         if (priv->wol_criteria == 0xffffffff) {
 973                 lbs_pr_info("Suspend attempt without configuring wake params!\n");
 974                 return -EINVAL;
 975         }
 976
 977         memset(&cmd, 0, sizeof(cmd));
 978
 979         ret = __lbs_cmd(priv, CMD_802_11_HOST_SLEEP_ACTIVATE, &cmd,
 980                         sizeof(cmd), lbs_suspend_callback, 0);
 981         if (ret)
 982                 lbs_pr_info("HOST_SLEEP_ACTIVATE failed: %d\n", ret);
 983
 984         lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
 985         return ret;
 986 }
 987 EXPORT_SYMBOL_GPL(lbs_suspend);
 988
 989 void lbs_resume(struct lbs_private *priv)
 990 {
 991         lbs_deb_enter(LBS_DEB_FW);
 992
 993         priv->fw_ready = 1;
 994
 995         /* Firmware doesn't seem to give us RX packets any more
 996            until we send it some command. Might as well update */
 997         lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
 998                                      0, 0, NULL);
 999
1000         netif_device_attach(priv->dev);
1001         if (priv->mesh_dev)
1002                 netif_device_attach(priv->mesh_dev);
1003
1004         lbs_deb_leave(LBS_DEB_FW);
1005 }
1006 EXPORT_SYMBOL_GPL(lbs_resume);
1007
1008 /**
1009  * @brief This function gets the HW spec from the firmware and sets
1010  *        some basic parameters.
1011  *
1012  *  @param priv    A pointer to struct lbs_private structure
1013  *  @return        0 or -1
1014  */
1015 static int lbs_setup_firmware(struct lbs_private *priv)
1016 {
1017         int ret = -1;
1018         s16 curlevel = 0, minlevel = 0, maxlevel = 0;
1019
1020         lbs_deb_enter(LBS_DEB_FW);
1021
1022         /* Read MAC address from firmware */
1023         memset(priv->current_addr, 0xff, ETH_ALEN);
1024         ret = lbs_update_hw_spec(priv);
1025         if (ret)
1026                 goto done;
1027
1028         /* Read power levels if available */
1029         ret = lbs_get_tx_power(priv, &curlevel, &minlevel, &maxlevel);
1030         if (ret == 0) {
1031                 priv->txpower_cur = curlevel;
1032                 priv->txpower_min = minlevel;
1033                 priv->txpower_max = maxlevel;
1034         }
1035
1036         lbs_set_mac_control(priv);
1037 done:
1038         lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
1039         return ret;
1040 }
1041
1042 /**
1043  *  This function handles the timeout of command sending.
1044  *  It will re-send the same command again.
1045  */
1046 static void command_timer_fn(unsigned long data)
1047 {
1048         struct lbs_private *priv = (struct lbs_private *)data;
1049         unsigned long flags;
1050
1051         lbs_deb_enter(LBS_DEB_CMD);
1052         spin_lock_irqsave(&priv->driver_lock, flags);
1053
1054         if (!priv->cur_cmd)
1055                 goto out;
1056
1057         lbs_pr_info("command 0x%04x timed out\n",
1058                 le16_to_cpu(priv->cur_cmd->cmdbuf->command));
1059
1060         priv->cmd_timed_out = 1;
1061         wake_up_interruptible(&priv->waitq);
1062 out:
1063         spin_unlock_irqrestore(&priv->driver_lock, flags);
1064         lbs_deb_leave(LBS_DEB_CMD);
1065 }
1066
1067 static void lbs_sync_channel_worker(struct work_struct *work)
1068 {
1069         struct lbs_private *priv = container_of(work, struct lbs_private,
1070                 sync_channel);
1071
1072         lbs_deb_enter(LBS_DEB_MAIN);
1073         if (lbs_update_channel(priv))
1074                 lbs_pr_info("Channel synchronization failed.");
1075         lbs_deb_leave(LBS_DEB_MAIN);
1076 }
1077
1078
1079 static int lbs_init_adapter(struct lbs_private *priv)
1080 {
1081         size_t bufsize;
1082         int i, ret = 0;
1083
1084         lbs_deb_enter(LBS_DEB_MAIN);
1085
1086         /* Allocate buffer to store the BSSID list */
1087         bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
1088         priv->networks = kzalloc(bufsize, GFP_KERNEL);
1089         if (!priv->networks) {
1090                 lbs_pr_err("Out of memory allocating beacons\n");
1091                 ret = -1;
1092                 goto out;
1093         }
1094
1095         /* Initialize scan result lists */
1096         INIT_LIST_HEAD(&priv->network_free_list);
1097         INIT_LIST_HEAD(&priv->network_list);
1098         for (i = 0; i < MAX_NETWORK_COUNT; i++) {
1099                 list_add_tail(&priv->networks[i].list,
1100                               &priv->network_free_list);
1101         }
1102
1103         memset(priv->current_addr, 0xff, ETH_ALEN);
1104
1105         priv->connect_status = LBS_DISCONNECTED;
1106         priv->mesh_connect_status = LBS_DISCONNECTED;
1107         priv->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
1108         priv->mode = IW_MODE_INFRA;
1109         priv->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;
1110         priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
1111         priv->radio_on = 1;
1112         priv->enablehwauto = 1;
1113         priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
1114         priv->psmode = LBS802_11POWERMODECAM;
1115         priv->psstate = PS_STATE_FULL_POWER;
1116
1117         mutex_init(&priv->lock);
1118
1119         setup_timer(&priv->command_timer, command_timer_fn,
1120                 (unsigned long)priv);
1121
1122         INIT_LIST_HEAD(&priv->cmdfreeq);
1123         INIT_LIST_HEAD(&priv->cmdpendingq);
1124
1125         spin_lock_init(&priv->driver_lock);
1126         init_waitqueue_head(&priv->cmd_pending);
1127
1128         /* Allocate the command buffers */
1129         if (lbs_allocate_cmd_buffer(priv)) {
1130                 lbs_pr_err("Out of memory allocating command buffers\n");
1131                 ret = -ENOMEM;
1132                 goto out;
1133         }
1134         priv->resp_idx = 0;
1135         priv->resp_len[0] = priv->resp_len[1] = 0;
1136
1137         /* Create the event FIFO */
1138         priv->event_fifo = kfifo_alloc(sizeof(u32) * 16, GFP_KERNEL, NULL);
1139         if (IS_ERR(priv->event_fifo)) {
1140                 lbs_pr_err("Out of memory allocating event FIFO buffer\n");
1141                 ret = -ENOMEM;
1142                 goto out;
1143         }
1144
1145 out:
1146         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1147
1148         return ret;
1149 }
1150
1151 static void lbs_free_adapter(struct lbs_private *priv)
1152 {
1153         lbs_deb_enter(LBS_DEB_MAIN);
1154
1155         lbs_free_cmd_buffer(priv);
1156         if (priv->event_fifo)
1157                 kfifo_free(priv->event_fifo);
1158         del_timer(&priv->command_timer);
1159         kfree(priv->networks);
1160         priv->networks = NULL;
1161
1162         lbs_deb_leave(LBS_DEB_MAIN);
1163 }
1164
1165 /**
1166  * @brief This function adds the card. it will probe the
1167  * card, allocate the lbs_priv and initialize the device.
1168  *
1169  *  @param card    A pointer to card
1170  *  @return        A pointer to struct lbs_private structure
1171  */
1172 struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
1173 {
1174         struct net_device *dev = NULL;
1175         struct lbs_private *priv = NULL;
1176
1177         lbs_deb_enter(LBS_DEB_MAIN);
1178
1179         /* Allocate an Ethernet device and register it */
1180         dev = alloc_etherdev(sizeof(struct lbs_private));
1181         if (!dev) {
1182                 lbs_pr_err("init ethX device failed\n");
1183                 goto done;
1184         }
1185         priv = netdev_priv(dev);
1186         dev->ml_priv = priv;
1187
1188         if (lbs_init_adapter(priv)) {
1189                 lbs_pr_err("failed to initialize adapter structure.\n");
1190                 goto err_init_adapter;
1191         }
1192
1193         priv->dev = dev;
1194         priv->card = card;
1195         priv->mesh_open = 0;
1196         priv->infra_open = 0;
1197
1198         /* Setup the OS Interface to our functions */
1199         dev->open = lbs_dev_open;
1200         dev->hard_start_xmit = lbs_hard_start_xmit;
1201         dev->stop = lbs_eth_stop;
1202         dev->set_mac_address = lbs_set_mac_address;
1203         dev->tx_timeout = lbs_tx_timeout;
1204         dev->get_stats = lbs_get_stats;
1205         dev->watchdog_timeo = 5 * HZ;
1206         dev->ethtool_ops = &lbs_ethtool_ops;
1207 #ifdef  WIRELESS_EXT
1208         dev->wireless_handlers = (struct iw_handler_def *)&lbs_handler_def;
1209 #endif
1210         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1211         dev->set_multicast_list = lbs_set_multicast_list;
1212
1213         SET_NETDEV_DEV(dev, dmdev);
1214
1215         priv->rtap_net_dev = NULL;
1216
1217         lbs_deb_thread("Starting main thread...\n");
1218         init_waitqueue_head(&priv->waitq);
1219         priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
1220         if (IS_ERR(priv->main_thread)) {
1221                 lbs_deb_thread("Error creating main thread.\n");
1222                 goto err_init_adapter;
1223         }
1224
1225         priv->work_thread = create_singlethread_workqueue("lbs_worker");
1226         INIT_DELAYED_WORK(&priv->assoc_work, lbs_association_worker);
1227         INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
1228         INIT_WORK(&priv->mcast_work, lbs_set_mcast_worker);
1229         INIT_WORK(&priv->sync_channel, lbs_sync_channel_worker);
1230
1231         sprintf(priv->mesh_ssid, "mesh");
1232         priv->mesh_ssid_len = 4;
1233
1234         priv->wol_criteria = 0xffffffff;
1235         priv->wol_gpio = 0xff;
1236
1237         goto done;
1238
1239 err_init_adapter:
1240         lbs_free_adapter(priv);
1241         free_netdev(dev);
1242         priv = NULL;
1243
1244 done:
1245         lbs_deb_leave_args(LBS_DEB_MAIN, "priv %p", priv);
1246         return priv;
1247 }
1248 EXPORT_SYMBOL_GPL(lbs_add_card);
1249
1250
1251 void lbs_remove_card(struct lbs_private *priv)
1252 {
1253         struct net_device *dev = priv->dev;
1254         union iwreq_data wrqu;
1255
1256         lbs_deb_enter(LBS_DEB_MAIN);
1257
1258         lbs_remove_mesh(priv);
1259         lbs_remove_rtap(priv);
1260
1261         dev = priv->dev;
1262
1263         cancel_delayed_work_sync(&priv->scan_work);
1264         cancel_delayed_work_sync(&priv->assoc_work);
1265         cancel_work_sync(&priv->mcast_work);
1266
1267         /* worker thread destruction blocks on the in-flight command which
1268          * should have been cleared already in lbs_stop_card().
1269          */
1270         lbs_deb_main("destroying worker thread\n");
1271         destroy_workqueue(priv->work_thread);
1272         lbs_deb_main("done destroying worker thread\n");
1273
1274         if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
1275                 priv->psmode = LBS802_11POWERMODECAM;
1276                 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1277         }
1278
1279         memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1280         wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1281         wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1282
1283         /* Stop the thread servicing the interrupts */
1284         priv->surpriseremoved = 1;
1285         kthread_stop(priv->main_thread);
1286
1287         lbs_free_adapter(priv);
1288
1289         priv->dev = NULL;
1290         free_netdev(dev);
1291
1292         lbs_deb_leave(LBS_DEB_MAIN);
1293 }
1294 EXPORT_SYMBOL_GPL(lbs_remove_card);
1295
1296
1297 int lbs_start_card(struct lbs_private *priv)
1298 {
1299         struct net_device *dev = priv->dev;
1300         int ret = -1;
1301
1302         lbs_deb_enter(LBS_DEB_MAIN);
1303
1304         /* poke the firmware */
1305         ret = lbs_setup_firmware(priv);
1306         if (ret)
1307                 goto done;
1308
1309         /* init 802.11d */
1310         lbs_init_11d(priv);
1311
1312         if (register_netdev(dev)) {
1313                 lbs_pr_err("cannot register ethX device\n");
1314                 goto done;
1315         }
1316
1317         lbs_update_channel(priv);
1318
1319         /* 5.0.16p0 is known to NOT support any mesh */
1320         if (priv->fwrelease > 0x05001000) {
1321                 /* Enable mesh, if supported, and work out which TLV it uses.
1322                    0x100 + 291 is an unofficial value used in 5.110.20.pXX
1323                    0x100 + 37 is the official value used in 5.110.21.pXX
1324                    but we check them in that order because 20.pXX doesn't
1325                    give an error -- it just silently fails. */
1326
1327                 /* 5.110.20.pXX firmware will fail the command if the channel
1328                    doesn't match the existing channel. But only if the TLV
1329                    is correct. If the channel is wrong, _BOTH_ versions will
1330                    give an error to 0x100+291, and allow 0x100+37 to succeed.
1331                    It's just that 5.110.20.pXX will not have done anything
1332                    useful */
1333
1334                 priv->mesh_tlv = 0x100 + 291;
1335                 if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START,
1336                                     priv->curbssparams.channel)) {
1337                         priv->mesh_tlv = 0x100 + 37;
1338                         if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START,
1339                                             priv->curbssparams.channel))
1340                                 priv->mesh_tlv = 0;
1341                 }
1342                 if (priv->mesh_tlv) {
1343                         lbs_add_mesh(priv);
1344
1345                         if (device_create_file(&dev->dev, &dev_attr_lbs_mesh))
1346                                 lbs_pr_err("cannot register lbs_mesh attribute\n");
1347
1348                         /* While rtap isn't related to mesh, only mesh-enabled
1349                          * firmware implements the rtap functionality via
1350                          * CMD_802_11_MONITOR_MODE.
1351                          */
1352                         if (device_create_file(&dev->dev, &dev_attr_lbs_rtap))
1353                                 lbs_pr_err("cannot register lbs_rtap attribute\n");
1354                 }
1355         }
1356
1357         lbs_debugfs_init_one(priv, dev);
1358
1359         lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
1360
1361         ret = 0;
1362
1363 done:
1364         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1365         return ret;
1366 }
1367 EXPORT_SYMBOL_GPL(lbs_start_card);
1368
1369
1370 void lbs_stop_card(struct lbs_private *priv)
1371 {
1372         struct net_device *dev;
1373         struct cmd_ctrl_node *cmdnode;
1374         unsigned long flags;
1375
1376         lbs_deb_enter(LBS_DEB_MAIN);
1377
1378         if (!priv)
1379                 goto out;
1380         dev = priv->dev;
1381
1382         netif_stop_queue(dev);
1383         netif_carrier_off(dev);
1384
1385         lbs_debugfs_remove_one(priv);
1386         if (priv->mesh_tlv) {
1387                 device_remove_file(&dev->dev, &dev_attr_lbs_mesh);
1388                 device_remove_file(&dev->dev, &dev_attr_lbs_rtap);
1389         }
1390
1391         /* Delete the timeout of the currently processing command */
1392         del_timer_sync(&priv->command_timer);
1393
1394         /* Flush pending command nodes */
1395         spin_lock_irqsave(&priv->driver_lock, flags);
1396         lbs_deb_main("clearing pending commands\n");
1397         list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
1398                 cmdnode->result = -ENOENT;
1399                 cmdnode->cmdwaitqwoken = 1;
1400                 wake_up_interruptible(&cmdnode->cmdwait_q);
1401         }
1402
1403         /* Flush the command the card is currently processing */
1404         if (priv->cur_cmd) {
1405                 lbs_deb_main("clearing current command\n");
1406                 priv->cur_cmd->result = -ENOENT;
1407                 priv->cur_cmd->cmdwaitqwoken = 1;
1408                 wake_up_interruptible(&priv->cur_cmd->cmdwait_q);
1409         }
1410         lbs_deb_main("done clearing commands\n");
1411         spin_unlock_irqrestore(&priv->driver_lock, flags);
1412
1413         unregister_netdev(dev);
1414
1415 out:
1416         lbs_deb_leave(LBS_DEB_MAIN);
1417 }
1418 EXPORT_SYMBOL_GPL(lbs_stop_card);
1419
1420
1421 /**
1422  * @brief This function adds mshX interface
1423  *
1424  *  @param priv    A pointer to the struct lbs_private structure
1425  *  @return        0 if successful, -X otherwise
1426  */
1427 static int lbs_add_mesh(struct lbs_private *priv)
1428 {
1429         struct net_device *mesh_dev = NULL;
1430         int ret = 0;
1431
1432         lbs_deb_enter(LBS_DEB_MESH);
1433
1434         /* Allocate a virtual mesh device */
1435         if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
1436                 lbs_deb_mesh("init mshX device failed\n");
1437                 ret = -ENOMEM;
1438                 goto done;
1439         }
1440         mesh_dev->ml_priv = priv;
1441         priv->mesh_dev = mesh_dev;
1442
1443         mesh_dev->open = lbs_dev_open;
1444         mesh_dev->hard_start_xmit = lbs_hard_start_xmit;
1445         mesh_dev->stop = lbs_mesh_stop;
1446         mesh_dev->get_stats = lbs_get_stats;
1447         mesh_dev->set_mac_address = lbs_set_mac_address;
1448         mesh_dev->ethtool_ops = &lbs_ethtool_ops;
1449         memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
1450                         sizeof(priv->dev->dev_addr));
1451
1452         SET_NETDEV_DEV(priv->mesh_dev, priv->dev->dev.parent);
1453
1454 #ifdef  WIRELESS_EXT
1455         mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
1456 #endif
1457         mesh_dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1458         mesh_dev->set_multicast_list = lbs_set_multicast_list;
1459         /* Register virtual mesh interface */
1460         ret = register_netdev(mesh_dev);
1461         if (ret) {
1462                 lbs_pr_err("cannot register mshX virtual interface\n");
1463                 goto err_free;
1464         }
1465
1466         ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1467         if (ret)
1468                 goto err_unregister;
1469
1470         lbs_persist_config_init(mesh_dev);
1471
1472         /* Everything successful */
1473         ret = 0;
1474         goto done;
1475
1476 err_unregister:
1477         unregister_netdev(mesh_dev);
1478
1479 err_free:
1480         free_netdev(mesh_dev);
1481
1482 done:
1483         lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1484         return ret;
1485 }
1486
1487 static void lbs_remove_mesh(struct lbs_private *priv)
1488 {
1489         struct net_device *mesh_dev;
1490
1491
1492         mesh_dev = priv->mesh_dev;
1493         if (!mesh_dev)
1494                 return;
1495
1496         lbs_deb_enter(LBS_DEB_MESH);
1497         netif_stop_queue(mesh_dev);
1498         netif_carrier_off(mesh_dev);
1499         sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1500         lbs_persist_config_remove(mesh_dev);
1501         unregister_netdev(mesh_dev);
1502         priv->mesh_dev = NULL;
1503         free_netdev(mesh_dev);
1504         lbs_deb_leave(LBS_DEB_MESH);
1505 }
1506
1507 /**
1508  *  @brief This function finds the CFP in
1509  *  region_cfp_table based on region and band parameter.
1510  *
1511  *  @param region  The region code
1512  *  @param band    The band
1513  *  @param cfp_no  A pointer to CFP number
1514  *  @return        A pointer to CFP
1515  */
1516 struct chan_freq_power *lbs_get_region_cfp_table(u8 region, int *cfp_no)
1517 {
1518         int i, end;
1519
1520         lbs_deb_enter(LBS_DEB_MAIN);
1521
1522         end = ARRAY_SIZE(region_cfp_table);
1523
1524         for (i = 0; i < end ; i++) {
1525                 lbs_deb_main("region_cfp_table[i].region=%d\n",
1526                         region_cfp_table[i].region);
1527                 if (region_cfp_table[i].region == region) {
1528                         *cfp_no = region_cfp_table[i].cfp_no_BG;
1529                         lbs_deb_leave(LBS_DEB_MAIN);
1530                         return region_cfp_table[i].cfp_BG;
1531                 }
1532         }
1533
1534         lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1535         return NULL;
1536 }
1537
1538 int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band)
1539 {
1540         int ret = 0;
1541         int i = 0;
1542
1543         struct chan_freq_power *cfp;
1544         int cfp_no;
1545
1546         lbs_deb_enter(LBS_DEB_MAIN);
1547
1548         memset(priv->region_channel, 0, sizeof(priv->region_channel));
1549
1550         cfp = lbs_get_region_cfp_table(region, &cfp_no);
1551         if (cfp != NULL) {
1552                 priv->region_channel[i].nrcfp = cfp_no;
1553                 priv->region_channel[i].CFP = cfp;
1554         } else {
1555                 lbs_deb_main("wrong region code %#x in band B/G\n",
1556                        region);
1557                 ret = -1;
1558                 goto out;
1559         }
1560         priv->region_channel[i].valid = 1;
1561         priv->region_channel[i].region = region;
1562         priv->region_channel[i].band = band;
1563         i++;
1564 out:
1565         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1566         return ret;
1567 }
1568
1569 void lbs_queue_event(struct lbs_private *priv, u32 event)
1570 {
1571         unsigned long flags;
1572
1573         lbs_deb_enter(LBS_DEB_THREAD);
1574         spin_lock_irqsave(&priv->driver_lock, flags);
1575
1576         if (priv->psstate == PS_STATE_SLEEP)
1577                 priv->psstate = PS_STATE_AWAKE;
1578
1579         __kfifo_put(priv->event_fifo, (unsigned char *) &event, sizeof(u32));
1580
1581         wake_up_interruptible(&priv->waitq);
1582
1583         spin_unlock_irqrestore(&priv->driver_lock, flags);
1584         lbs_deb_leave(LBS_DEB_THREAD);
1585 }
1586 EXPORT_SYMBOL_GPL(lbs_queue_event);
1587
1588 void lbs_notify_command_response(struct lbs_private *priv, u8 resp_idx)
1589 {
1590         lbs_deb_enter(LBS_DEB_THREAD);
1591
1592         if (priv->psstate == PS_STATE_SLEEP)
1593                 priv->psstate = PS_STATE_AWAKE;
1594
1595         /* Swap buffers by flipping the response index */
1596         BUG_ON(resp_idx > 1);
1597         priv->resp_idx = resp_idx;
1598
1599         wake_up_interruptible(&priv->waitq);
1600
1601         lbs_deb_leave(LBS_DEB_THREAD);
1602 }
1603 EXPORT_SYMBOL_GPL(lbs_notify_command_response);
1604
1605 static int __init lbs_init_module(void)
1606 {
1607         lbs_deb_enter(LBS_DEB_MAIN);
1608         memset(&confirm_sleep, 0, sizeof(confirm_sleep));
1609         confirm_sleep.hdr.command = cpu_to_le16(CMD_802_11_PS_MODE);
1610         confirm_sleep.hdr.size = cpu_to_le16(sizeof(confirm_sleep));
1611         confirm_sleep.action = cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
1612         lbs_debugfs_init();
1613         lbs_deb_leave(LBS_DEB_MAIN);
1614         return 0;
1615 }
1616
1617 static void __exit lbs_exit_module(void)
1618 {
1619         lbs_deb_enter(LBS_DEB_MAIN);
1620         lbs_debugfs_remove();
1621         lbs_deb_leave(LBS_DEB_MAIN);
1622 }
1623
1624 /*
1625  * rtap interface support fuctions
1626  */
1627
1628 static int lbs_rtap_open(struct net_device *dev)
1629 {
1630         /* Yes, _stop_ the queue. Because we don't support injection */
1631         lbs_deb_enter(LBS_DEB_MAIN);
1632         netif_carrier_off(dev);
1633         netif_stop_queue(dev);
1634         lbs_deb_leave(LBS_DEB_LEAVE);
1635         return 0;
1636 }
1637
1638 static int lbs_rtap_stop(struct net_device *dev)
1639 {
1640         lbs_deb_enter(LBS_DEB_MAIN);
1641         lbs_deb_leave(LBS_DEB_MAIN);
1642         return 0;
1643 }
1644
1645 static int lbs_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1646 {
1647         netif_stop_queue(dev);
1648         return NETDEV_TX_BUSY;
1649 }
1650
1651 static struct net_device_stats *lbs_rtap_get_stats(struct net_device *dev)
1652 {
1653         struct lbs_private *priv = dev->ml_priv;
1654         lbs_deb_enter(LBS_DEB_NET);
1655         return &priv->stats;
1656 }
1657
1658
1659 static void lbs_remove_rtap(struct lbs_private *priv)
1660 {
1661         lbs_deb_enter(LBS_DEB_MAIN);
1662         if (priv->rtap_net_dev == NULL)
1663                 goto out;
1664         unregister_netdev(priv->rtap_net_dev);
1665         free_netdev(priv->rtap_net_dev);
1666         priv->rtap_net_dev = NULL;
1667 out:
1668         lbs_deb_leave(LBS_DEB_MAIN);
1669 }
1670
1671 static int lbs_add_rtap(struct lbs_private *priv)
1672 {
1673         int ret = 0;
1674         struct net_device *rtap_dev;
1675
1676         lbs_deb_enter(LBS_DEB_MAIN);
1677         if (priv->rtap_net_dev) {
1678                 ret = -EPERM;
1679                 goto out;
1680         }
1681
1682         rtap_dev = alloc_netdev(0, "rtap%d", ether_setup);
1683         if (rtap_dev == NULL) {
1684                 ret = -ENOMEM;
1685                 goto out;
1686         }
1687
1688         memcpy(rtap_dev->dev_addr, priv->current_addr, ETH_ALEN);
1689         rtap_dev->type = ARPHRD_IEEE80211_RADIOTAP;
1690         rtap_dev->open = lbs_rtap_open;
1691         rtap_dev->stop = lbs_rtap_stop;
1692         rtap_dev->get_stats = lbs_rtap_get_stats;
1693         rtap_dev->hard_start_xmit = lbs_rtap_hard_start_xmit;
1694         rtap_dev->ml_priv = priv;
1695         SET_NETDEV_DEV(rtap_dev, priv->dev->dev.parent);
1696
1697         ret = register_netdev(rtap_dev);
1698         if (ret) {
1699                 free_netdev(rtap_dev);
1700                 goto out;
1701         }
1702         priv->rtap_net_dev = rtap_dev;
1703
1704 out:
1705         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1706         return ret;
1707 }
1708
1709 module_init(lbs_init_module);
1710 module_exit(lbs_exit_module);
1711
1712 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1713 MODULE_AUTHOR("Marvell International Ltd.");
1714 MODULE_LICENSE("GPL");