drivers/net/wireless/libertas/main.c

   1 /**
   2   * This file contains the major functions in WLAN
   3   * driver. It includes init, exit, open, close and main
   4   * thread etc..
   5   */
   6
   7 #include <linux/moduleparam.h>
   8 #include <linux/delay.h>
   9 #include <linux/freezer.h>
  10 #include <linux/etherdevice.h>
  11 #include <linux/netdevice.h>
  12 #include <linux/if_arp.h>
  13 #include <linux/kthread.h>
  14
  15 #include <net/iw_handler.h>
  16 #include <net/ieee80211.h>
  17
  18 #include "host.h"
  19 #include "decl.h"
  20 #include "dev.h"
  21 #include "wext.h"
  22 #include "debugfs.h"
  23 #include "assoc.h"
  24 #include "join.h"
  25
  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 cmd_ds_mesh_access mesh_access;
 220
 221         memset(&mesh_access, 0, sizeof(mesh_access));
 222         lbs_prepare_and_send_command(to_net_dev(dev)->priv,
 223                         CMD_MESH_ACCESS,
 224                         CMD_ACT_MESH_GET_ANYCAST,
 225                         CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
 226
 227         return snprintf(buf, 12, "0x%X\n", le32_to_cpu(mesh_access.data[0]));
 228 }
 229
 230 /**
 231  * @brief Set function for sysfs attribute anycast_mask
 232  */
 233 static ssize_t lbs_anycast_set(struct device *dev,
 234                 struct device_attribute *attr, const char * buf, size_t count)
 235 {
 236         struct cmd_ds_mesh_access mesh_access;
 237         uint32_t datum;
 238
 239         memset(&mesh_access, 0, sizeof(mesh_access));
 240         sscanf(buf, "%x", &datum);
 241         mesh_access.data[0] = cpu_to_le32(datum);
 242
 243         lbs_prepare_and_send_command((to_net_dev(dev))->priv,
 244                         CMD_MESH_ACCESS,
 245                         CMD_ACT_MESH_SET_ANYCAST,
 246                         CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
 247         return strlen(buf);
 248 }
 249
 250 int lbs_add_rtap(struct lbs_private *priv);
 251 void lbs_remove_rtap(struct lbs_private *priv);
 252
 253 /**
 254  * Get function for sysfs attribute rtap
 255  */
 256 static ssize_t lbs_rtap_get(struct device *dev,
 257                 struct device_attribute *attr, char * buf)
 258 {
 259         struct lbs_private *priv = to_net_dev(dev)->priv;
 260         struct lbs_adapter *adapter = priv->adapter;
 261         return snprintf(buf, 5, "0x%X\n", adapter->monitormode);
 262 }
 263
 264 /**
 265  *  Set function for sysfs attribute rtap
 266  */
 267 static ssize_t lbs_rtap_set(struct device *dev,
 268                 struct device_attribute *attr, const char * buf, size_t count)
 269 {
 270         int monitor_mode;
 271         struct lbs_private *priv = to_net_dev(dev)->priv;
 272         struct lbs_adapter *adapter = priv->adapter;
 273
 274         sscanf(buf, "%x", &monitor_mode);
 275         if (monitor_mode != LBS_MONITOR_OFF) {
 276                 if(adapter->monitormode == monitor_mode)
 277                         return strlen(buf);
 278                 if (adapter->monitormode == LBS_MONITOR_OFF) {
 279                         if (adapter->mode == IW_MODE_INFRA)
 280                                 lbs_send_deauthentication(priv);
 281                         else if (adapter->mode == IW_MODE_ADHOC)
 282                                 lbs_stop_adhoc_network(priv);
 283                         lbs_add_rtap(priv);
 284                 }
 285                 adapter->monitormode = monitor_mode;
 286         }
 287
 288         else {
 289                 if (adapter->monitormode == LBS_MONITOR_OFF)
 290                         return strlen(buf);
 291                 adapter->monitormode = LBS_MONITOR_OFF;
 292                 lbs_remove_rtap(priv);
 293
 294                 if (adapter->currenttxskb) {
 295                         dev_kfree_skb_any(adapter->currenttxskb);
 296                         adapter->currenttxskb = NULL;
 297                 }
 298
 299                 /* Wake queues, command thread, etc. */
 300                 lbs_host_to_card_done(priv);
 301         }
 302
 303         lbs_prepare_and_send_command(priv,
 304                         CMD_802_11_MONITOR_MODE, CMD_ACT_SET,
 305                         CMD_OPTION_WAITFORRSP, 0, &adapter->monitormode);
 306         return strlen(buf);
 307 }
 308
 309 /**
 310  * lbs_rtap attribute to be exported per mshX interface
 311  * through sysfs (/sys/class/net/mshX/libertas-rtap)
 312  */
 313 static DEVICE_ATTR(lbs_rtap, 0644, lbs_rtap_get,
 314                 lbs_rtap_set );
 315
 316 /**
 317  * anycast_mask attribute to be exported per mshX interface
 318  * through sysfs (/sys/class/net/mshX/anycast_mask)
 319  */
 320 static DEVICE_ATTR(anycast_mask, 0644, lbs_anycast_get, lbs_anycast_set);
 321
 322 static ssize_t lbs_autostart_enabled_get(struct device *dev,
 323                 struct device_attribute *attr, char * buf)
 324 {
 325         struct cmd_ds_mesh_access mesh_access;
 326
 327         memset(&mesh_access, 0, sizeof(mesh_access));
 328         lbs_prepare_and_send_command(to_net_dev(dev)->priv,
 329                         CMD_MESH_ACCESS,
 330                         CMD_ACT_MESH_GET_AUTOSTART_ENABLED,
 331                         CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
 332
 333         return sprintf(buf, "%d\n", le32_to_cpu(mesh_access.data[0]));
 334 }
 335
 336 static ssize_t lbs_autostart_enabled_set(struct device *dev,
 337                 struct device_attribute *attr, const char * buf, size_t count)
 338 {
 339         struct cmd_ds_mesh_access mesh_access;
 340         uint32_t datum;
 341         struct lbs_private *priv = (to_net_dev(dev))->priv;
 342         int ret;
 343
 344         memset(&mesh_access, 0, sizeof(mesh_access));
 345         sscanf(buf, "%d", &datum);
 346         mesh_access.data[0] = cpu_to_le32(datum);
 347
 348         ret = lbs_prepare_and_send_command(priv,
 349                         CMD_MESH_ACCESS,
 350                         CMD_ACT_MESH_SET_AUTOSTART_ENABLED,
 351                         CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
 352         if (ret == 0)
 353                 priv->mesh_autostart_enabled = datum ? 1 : 0;
 354
 355         return strlen(buf);
 356 }
 357
 358 static DEVICE_ATTR(autostart_enabled, 0644,
 359                 lbs_autostart_enabled_get, lbs_autostart_enabled_set);
 360
 361 static struct attribute *lbs_mesh_sysfs_entries[] = {
 362         &dev_attr_anycast_mask.attr,
 363         &dev_attr_autostart_enabled.attr,
 364         NULL,
 365 };
 366
 367 static struct attribute_group lbs_mesh_attr_group = {
 368         .attrs = lbs_mesh_sysfs_entries,
 369 };
 370
 371 /**
 372  *  @brief Check if the device can be open and wait if necessary.
 373  *
 374  *  @param dev     A pointer to net_device structure
 375  *  @return        0
 376  *
 377  * For USB adapter, on some systems the device open handler will be
 378  * called before FW ready. Use the following flag check and wait
 379  * function to work around the issue.
 380  *
 381  */
 382 static int pre_open_check(struct net_device *dev)
 383 {
 384         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 385         struct lbs_adapter *adapter = priv->adapter;
 386         int i = 0;
 387
 388         while (!adapter->fw_ready && i < 20) {
 389                 i++;
 390                 msleep_interruptible(100);
 391         }
 392         if (!adapter->fw_ready) {
 393                 lbs_pr_err("firmware not ready\n");
 394                 return -1;
 395         }
 396
 397         return 0;
 398 }
 399
 400 /**
 401  *  @brief This function opens the device
 402  *
 403  *  @param dev     A pointer to net_device structure
 404  *  @return        0
 405  */
 406 static int lbs_dev_open(struct net_device *dev)
 407 {
 408         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 409         struct lbs_adapter *adapter = priv->adapter;
 410
 411         lbs_deb_enter(LBS_DEB_NET);
 412
 413         priv->open = 1;
 414
 415         if (adapter->connect_status == LBS_CONNECTED)
 416                 netif_carrier_on(priv->dev);
 417         else
 418                 netif_carrier_off(priv->dev);
 419
 420         if (priv->mesh_dev) {
 421                 if (adapter->mesh_connect_status == LBS_CONNECTED)
 422                         netif_carrier_on(priv->mesh_dev);
 423                 else
 424                         netif_carrier_off(priv->mesh_dev);
 425         }
 426
 427         lbs_deb_leave(LBS_DEB_NET);
 428         return 0;
 429 }
 430 /**
 431  *  @brief This function opens the mshX interface
 432  *
 433  *  @param dev     A pointer to net_device structure
 434  *  @return        0
 435  */
 436 static int lbs_mesh_open(struct net_device *dev)
 437 {
 438         struct lbs_private *priv = (struct lbs_private *) dev->priv ;
 439
 440         if (pre_open_check(dev) == -1)
 441                 return -1;
 442         priv->mesh_open = 1 ;
 443         netif_wake_queue(priv->mesh_dev);
 444
 445         priv->adapter->mesh_connect_status = LBS_CONNECTED;
 446
 447         netif_carrier_on(priv->mesh_dev);
 448         netif_wake_queue(priv->mesh_dev);
 449         if (priv->infra_open == 0)
 450                 return lbs_dev_open(priv->dev) ;
 451         return 0;
 452 }
 453
 454 /**
 455  *  @brief This function opens the ethX interface
 456  *
 457  *  @param dev     A pointer to net_device structure
 458  *  @return        0
 459  */
 460 static int lbs_open(struct net_device *dev)
 461 {
 462         struct lbs_private *priv = (struct lbs_private *) dev->priv ;
 463
 464         if(pre_open_check(dev) == -1)
 465                 return -1;
 466         priv->infra_open = 1 ;
 467         netif_wake_queue(priv->dev);
 468         if (priv->open == 0)
 469                 return lbs_dev_open(priv->dev) ;
 470         return 0;
 471 }
 472
 473 static int lbs_dev_close(struct net_device *dev)
 474 {
 475         struct lbs_private *priv = dev->priv;
 476
 477         lbs_deb_enter(LBS_DEB_NET);
 478
 479         netif_carrier_off(priv->dev);
 480         priv->open = 0;
 481
 482         lbs_deb_leave(LBS_DEB_NET);
 483         return 0;
 484 }
 485
 486 /**
 487  *  @brief This function closes the mshX interface
 488  *
 489  *  @param dev     A pointer to net_device structure
 490  *  @return        0
 491  */
 492 static int lbs_mesh_close(struct net_device *dev)
 493 {
 494         struct lbs_private *priv = (struct lbs_private *) (dev->priv);
 495
 496         priv->mesh_open = 0;
 497         netif_stop_queue(priv->mesh_dev);
 498         if (priv->infra_open == 0)
 499                 return lbs_dev_close(dev);
 500         else
 501                 return 0;
 502 }
 503
 504 /**
 505  *  @brief This function closes the ethX interface
 506  *
 507  *  @param dev     A pointer to net_device structure
 508  *  @return        0
 509  */
 510 static int lbs_close(struct net_device *dev)
 511 {
 512         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 513
 514         netif_stop_queue(dev);
 515         priv->infra_open = 0;
 516         if (priv->mesh_open == 0)
 517                 return lbs_dev_close(dev);
 518         else
 519                 return 0;
 520 }
 521
 522
 523 static int lbs_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 524 {
 525         int ret = 0;
 526         struct lbs_private *priv = dev->priv;
 527
 528         lbs_deb_enter(LBS_DEB_TX);
 529
 530         /* We could return NETDEV_TX_BUSY here, but I'd actually
 531            like to get the point where we can BUG() */
 532         if (priv->dnld_sent) {
 533                 lbs_pr_err("%s while dnld_sent\n", __func__);
 534                 priv->stats.tx_dropped++;
 535                 goto done;
 536         }
 537         if (priv->adapter->currenttxskb) {
 538                 lbs_pr_err("%s while TX skb pending\n", __func__);
 539                 priv->stats.tx_dropped++;
 540                 goto done;
 541         }
 542
 543         netif_stop_queue(priv->dev);
 544         if (priv->mesh_dev)
 545                 netif_stop_queue(priv->mesh_dev);
 546
 547         if (lbs_process_tx(priv, skb) == 0)
 548                 dev->trans_start = jiffies;
 549 done:
 550         lbs_deb_leave_args(LBS_DEB_TX, "ret %d", ret);
 551         return ret;
 552 }
 553
 554 /**
 555  * @brief Mark mesh packets and handover them to lbs_hard_start_xmit
 556  *
 557  */
 558 static int lbs_mesh_pre_start_xmit(struct sk_buff *skb,
 559                 struct net_device *dev)
 560 {
 561         struct lbs_private *priv = dev->priv;
 562         int ret;
 563
 564         lbs_deb_enter(LBS_DEB_MESH);
 565         if (priv->adapter->monitormode != LBS_MONITOR_OFF) {
 566                 netif_stop_queue(dev);
 567                 return -EOPNOTSUPP;
 568         }
 569
 570         SET_MESH_FRAME(skb);
 571
 572         ret = lbs_hard_start_xmit(skb, priv->mesh_dev);
 573         lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
 574         return ret;
 575 }
 576
 577 /**
 578  * @brief Mark non-mesh packets and handover them to lbs_hard_start_xmit
 579  *
 580  */
 581 static int lbs_pre_start_xmit(struct sk_buff *skb, struct net_device *dev)
 582 {
 583         struct lbs_private *priv = dev->priv;
 584         int ret;
 585
 586         lbs_deb_enter(LBS_DEB_TX);
 587
 588         if (priv->adapter->monitormode != LBS_MONITOR_OFF) {
 589                 netif_stop_queue(dev);
 590                 return -EOPNOTSUPP;
 591         }
 592
 593         UNSET_MESH_FRAME(skb);
 594
 595         ret = lbs_hard_start_xmit(skb, dev);
 596         lbs_deb_leave_args(LBS_DEB_TX, "ret %d", ret);
 597         return ret;
 598 }
 599
 600 static void lbs_tx_timeout(struct net_device *dev)
 601 {
 602         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 603
 604         lbs_deb_enter(LBS_DEB_TX);
 605
 606         lbs_pr_err("tx watch dog timeout\n");
 607
 608         priv->dnld_sent = DNLD_RES_RECEIVED;
 609         dev->trans_start = jiffies;
 610
 611         if (priv->adapter->currenttxskb) {
 612                 if (priv->adapter->monitormode != LBS_MONITOR_OFF) {
 613                         /* If we are here, we have not received feedback from
 614                            the previous packet.  Assume TX_FAIL and move on. */
 615                         priv->adapter->eventcause = 0x01000000;
 616                         lbs_send_tx_feedback(priv);
 617                 } else
 618                         wake_up_interruptible(&priv->waitq);
 619         } else if (dev == priv->dev) {
 620                 if (priv->adapter->connect_status == LBS_CONNECTED)
 621                         netif_wake_queue(priv->dev);
 622
 623         } else if (dev == priv->mesh_dev) {
 624                 if (priv->adapter->mesh_connect_status == LBS_CONNECTED)
 625                         netif_wake_queue(priv->mesh_dev);
 626         }
 627
 628         lbs_deb_leave(LBS_DEB_TX);
 629 }
 630
 631 void lbs_host_to_card_done(struct lbs_private *priv)
 632 {
 633         struct lbs_adapter *adapter = priv->adapter;
 634
 635         priv->dnld_sent = DNLD_RES_RECEIVED;
 636
 637         /* Wake main thread if commands are pending */
 638         if (!adapter->cur_cmd)
 639                 wake_up_interruptible(&priv->waitq);
 640
 641         /* Don't wake netif queues if we're in monitor mode and
 642            a TX packet is already pending. */
 643         if (priv->adapter->currenttxskb)
 644                 return;
 645
 646         if (priv->dev && adapter->connect_status == LBS_CONNECTED)
 647                 netif_wake_queue(priv->dev);
 648
 649         if (priv->mesh_dev && adapter->mesh_connect_status == LBS_CONNECTED)
 650                 netif_wake_queue(priv->mesh_dev);
 651 }
 652 EXPORT_SYMBOL_GPL(lbs_host_to_card_done);
 653
 654 /**
 655  *  @brief This function returns the network statistics
 656  *
 657  *  @param dev     A pointer to struct lbs_private structure
 658  *  @return        A pointer to net_device_stats structure
 659  */
 660 static struct net_device_stats *lbs_get_stats(struct net_device *dev)
 661 {
 662         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 663
 664         return &priv->stats;
 665 }
 666
 667 static int lbs_set_mac_address(struct net_device *dev, void *addr)
 668 {
 669         int ret = 0;
 670         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 671         struct lbs_adapter *adapter = priv->adapter;
 672         struct sockaddr *phwaddr = addr;
 673
 674         lbs_deb_enter(LBS_DEB_NET);
 675
 676         /* In case it was called from the mesh device */
 677         dev = priv->dev ;
 678
 679         memset(adapter->current_addr, 0, ETH_ALEN);
 680
 681         /* dev->dev_addr is 8 bytes */
 682         lbs_deb_hex(LBS_DEB_NET, "dev->dev_addr", dev->dev_addr, ETH_ALEN);
 683
 684         lbs_deb_hex(LBS_DEB_NET, "addr", phwaddr->sa_data, ETH_ALEN);
 685         memcpy(adapter->current_addr, phwaddr->sa_data, ETH_ALEN);
 686
 687         ret = lbs_prepare_and_send_command(priv, CMD_802_11_MAC_ADDRESS,
 688                                     CMD_ACT_SET,
 689                                     CMD_OPTION_WAITFORRSP, 0, NULL);
 690
 691         if (ret) {
 692                 lbs_deb_net("set MAC address failed\n");
 693                 ret = -1;
 694                 goto done;
 695         }
 696
 697         lbs_deb_hex(LBS_DEB_NET, "adapter->macaddr", adapter->current_addr, ETH_ALEN);
 698         memcpy(dev->dev_addr, adapter->current_addr, ETH_ALEN);
 699         if (priv->mesh_dev)
 700                 memcpy(priv->mesh_dev->dev_addr, adapter->current_addr, ETH_ALEN);
 701
 702 done:
 703         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 704         return ret;
 705 }
 706
 707 static int lbs_copy_multicast_address(struct lbs_adapter *adapter,
 708                                      struct net_device *dev)
 709 {
 710         int i = 0;
 711         struct dev_mc_list *mcptr = dev->mc_list;
 712
 713         for (i = 0; i < dev->mc_count; i++) {
 714                 memcpy(&adapter->multicastlist[i], mcptr->dmi_addr, ETH_ALEN);
 715                 mcptr = mcptr->next;
 716         }
 717
 718         return i;
 719
 720 }
 721
 722 static void lbs_set_multicast_list(struct net_device *dev)
 723 {
 724         struct lbs_private *priv = dev->priv;
 725         struct lbs_adapter *adapter = priv->adapter;
 726         int oldpacketfilter;
 727         DECLARE_MAC_BUF(mac);
 728
 729         lbs_deb_enter(LBS_DEB_NET);
 730
 731         oldpacketfilter = adapter->currentpacketfilter;
 732
 733         if (dev->flags & IFF_PROMISC) {
 734                 lbs_deb_net("enable promiscuous mode\n");
 735                 adapter->currentpacketfilter |=
 736                     CMD_ACT_MAC_PROMISCUOUS_ENABLE;
 737                 adapter->currentpacketfilter &=
 738                     ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
 739                       CMD_ACT_MAC_MULTICAST_ENABLE);
 740         } else {
 741                 /* Multicast */
 742                 adapter->currentpacketfilter &=
 743                     ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
 744
 745                 if (dev->flags & IFF_ALLMULTI || dev->mc_count >
 746                     MRVDRV_MAX_MULTICAST_LIST_SIZE) {
 747                         lbs_deb_net( "enabling all multicast\n");
 748                         adapter->currentpacketfilter |=
 749                             CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
 750                         adapter->currentpacketfilter &=
 751                             ~CMD_ACT_MAC_MULTICAST_ENABLE;
 752                 } else {
 753                         adapter->currentpacketfilter &=
 754                             ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
 755
 756                         if (!dev->mc_count) {
 757                                 lbs_deb_net("no multicast addresses, "
 758                                        "disabling multicast\n");
 759                                 adapter->currentpacketfilter &=
 760                                     ~CMD_ACT_MAC_MULTICAST_ENABLE;
 761                         } else {
 762                                 int i;
 763
 764                                 adapter->currentpacketfilter |=
 765                                     CMD_ACT_MAC_MULTICAST_ENABLE;
 766
 767                                 adapter->nr_of_multicastmacaddr =
 768                                     lbs_copy_multicast_address(adapter, dev);
 769
 770                                 lbs_deb_net("multicast addresses: %d\n",
 771                                        dev->mc_count);
 772
 773                                 for (i = 0; i < dev->mc_count; i++) {
 774                                         lbs_deb_net("Multicast address %d:%s\n",
 775                                                i, print_mac(mac,
 776                                                adapter->multicastlist[i]));
 777                                 }
 778                                 /* send multicast addresses to firmware */
 779                                 lbs_prepare_and_send_command(priv,
 780                                                       CMD_MAC_MULTICAST_ADR,
 781                                                       CMD_ACT_SET, 0, 0,
 782                                                       NULL);
 783                         }
 784                 }
 785         }
 786
 787         if (adapter->currentpacketfilter != oldpacketfilter) {
 788                 lbs_set_mac_packet_filter(priv);
 789         }
 790
 791         lbs_deb_leave(LBS_DEB_NET);
 792 }
 793
 794 /**
 795  *  @brief This function handles the major jobs in the LBS driver.
 796  *  It handles all events generated by firmware, RX data received
 797  *  from firmware and TX data sent from kernel.
 798  *
 799  *  @param data    A pointer to lbs_thread structure
 800  *  @return        0
 801  */
 802 static int lbs_thread(void *data)
 803 {
 804         struct net_device *dev = data;
 805         struct lbs_private *priv = dev->priv;
 806         struct lbs_adapter *adapter = priv->adapter;
 807         wait_queue_t wait;
 808         u8 ireg = 0;
 809
 810         lbs_deb_enter(LBS_DEB_THREAD);
 811
 812         init_waitqueue_entry(&wait, current);
 813
 814         set_freezable();
 815
 816         for (;;) {
 817                 lbs_deb_thread( "main-thread 111: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
 818                                 adapter->intcounter, adapter->currenttxskb, priv->dnld_sent);
 819
 820                 add_wait_queue(&priv->waitq, &wait);
 821                 set_current_state(TASK_INTERRUPTIBLE);
 822                 spin_lock_irq(&adapter->driver_lock);
 823
 824                 if ((adapter->psstate == PS_STATE_SLEEP) ||
 825                     (!adapter->intcounter && (priv->dnld_sent || adapter->cur_cmd || list_empty(&adapter->cmdpendingq)))) {
 826                         lbs_deb_thread("main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
 827                                        adapter->connect_status, adapter->intcounter,
 828                                        adapter->psmode, adapter->psstate);
 829                         spin_unlock_irq(&adapter->driver_lock);
 830                         schedule();
 831                 } else
 832                         spin_unlock_irq(&adapter->driver_lock);
 833
 834                 lbs_deb_thread("main-thread 222 (waking up): intcounter=%d currenttxskb=%p dnld_sent=%d\n",
 835                                adapter->intcounter, adapter->currenttxskb, priv->dnld_sent);
 836
 837                 set_current_state(TASK_RUNNING);
 838                 remove_wait_queue(&priv->waitq, &wait);
 839                 try_to_freeze();
 840
 841                 lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
 842                                adapter->intcounter, adapter->currenttxskb, priv->dnld_sent);
 843
 844                 if (kthread_should_stop() || adapter->surpriseremoved) {
 845                         lbs_deb_thread("main-thread: break from main thread: surpriseremoved=0x%x\n",
 846                                        adapter->surpriseremoved);
 847                         break;
 848                 }
 849
 850
 851                 spin_lock_irq(&adapter->driver_lock);
 852
 853                 if (adapter->intcounter) {
 854                         u8 int_status;
 855
 856                         adapter->intcounter = 0;
 857                         int_status = priv->hw_get_int_status(priv, &ireg);
 858
 859                         if (int_status) {
 860                                 lbs_deb_thread("main-thread: reading HOST_INT_STATUS_REG failed\n");
 861                                 spin_unlock_irq(&adapter->driver_lock);
 862                                 continue;
 863                         }
 864                         adapter->hisregcpy |= ireg;
 865                 }
 866
 867                 lbs_deb_thread("main-thread 444: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
 868                                adapter->intcounter, adapter->currenttxskb, priv->dnld_sent);
 869
 870                 /* command response? */
 871                 if (adapter->hisregcpy & MRVDRV_CMD_UPLD_RDY) {
 872                         lbs_deb_thread("main-thread: cmd response ready\n");
 873
 874                         adapter->hisregcpy &= ~MRVDRV_CMD_UPLD_RDY;
 875                         spin_unlock_irq(&adapter->driver_lock);
 876                         lbs_process_rx_command(priv);
 877                         spin_lock_irq(&adapter->driver_lock);
 878                 }
 879
 880                 /* Any Card Event */
 881                 if (adapter->hisregcpy & MRVDRV_CARDEVENT) {
 882                         lbs_deb_thread("main-thread: Card Event Activity\n");
 883
 884                         adapter->hisregcpy &= ~MRVDRV_CARDEVENT;
 885
 886                         if (priv->hw_read_event_cause(priv)) {
 887                                 lbs_pr_alert("main-thread: hw_read_event_cause failed\n");
 888                                 spin_unlock_irq(&adapter->driver_lock);
 889                                 continue;
 890                         }
 891                         spin_unlock_irq(&adapter->driver_lock);
 892                         lbs_process_event(priv);
 893                 } else
 894                         spin_unlock_irq(&adapter->driver_lock);
 895
 896                 /* Check if we need to confirm Sleep Request received previously */
 897                 if (adapter->psstate == PS_STATE_PRE_SLEEP &&
 898                     !priv->dnld_sent && !adapter->cur_cmd) {
 899                         if (adapter->connect_status == LBS_CONNECTED) {
 900                                 lbs_deb_thread("main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p dnld_sent=%d cur_cmd=%p, confirm now\n",
 901                                                adapter->intcounter, adapter->currenttxskb, priv->dnld_sent, adapter->cur_cmd);
 902
 903                                 lbs_ps_confirm_sleep(priv, (u16) adapter->psmode);
 904                         } else {
 905                                 /* workaround for firmware sending
 906                                  * deauth/linkloss event immediately
 907                                  * after sleep request; remove this
 908                                  * after firmware fixes it
 909                                  */
 910                                 adapter->psstate = PS_STATE_AWAKE;
 911                                 lbs_pr_alert("main-thread: ignore PS_SleepConfirm in non-connected state\n");
 912                         }
 913                 }
 914
 915                 /* The PS state is changed during processing of Sleep Request
 916                  * event above
 917                  */
 918                 if ((priv->adapter->psstate == PS_STATE_SLEEP) ||
 919                     (priv->adapter->psstate == PS_STATE_PRE_SLEEP))
 920                         continue;
 921
 922                 /* Execute the next command */
 923                 if (!priv->dnld_sent && !priv->adapter->cur_cmd)
 924                         lbs_execute_next_command(priv);
 925
 926                 /* Wake-up command waiters which can't sleep in
 927                  * lbs_prepare_and_send_command
 928                  */
 929                 if (!list_empty(&adapter->cmdpendingq))
 930                         wake_up_all(&adapter->cmd_pending);
 931
 932                 lbs_tx_runqueue(priv);
 933         }
 934
 935         del_timer(&adapter->command_timer);
 936         wake_up_all(&adapter->cmd_pending);
 937
 938         lbs_deb_leave(LBS_DEB_THREAD);
 939         return 0;
 940 }
 941
 942 /**
 943  *  @brief This function downloads firmware image, gets
 944  *  HW spec from firmware and set basic parameters to
 945  *  firmware.
 946  *
 947  *  @param priv    A pointer to struct lbs_private structure
 948  *  @return        0 or -1
 949  */
 950 static int lbs_setup_firmware(struct lbs_private *priv)
 951 {
 952         int ret = -1;
 953         struct lbs_adapter *adapter = priv->adapter;
 954         struct cmd_ds_mesh_access mesh_access;
 955
 956         lbs_deb_enter(LBS_DEB_FW);
 957
 958         /*
 959          * Read MAC address from HW
 960          */
 961         memset(adapter->current_addr, 0xff, ETH_ALEN);
 962
 963         ret = lbs_prepare_and_send_command(priv, CMD_GET_HW_SPEC,
 964                                     0, CMD_OPTION_WAITFORRSP, 0, NULL);
 965
 966         if (ret) {
 967                 ret = -1;
 968                 goto done;
 969         }
 970
 971         lbs_set_mac_packet_filter(priv);
 972
 973         /* Get the supported Data rates */
 974         ret = lbs_prepare_and_send_command(priv, CMD_802_11_DATA_RATE,
 975                                     CMD_ACT_GET_TX_RATE,
 976                                     CMD_OPTION_WAITFORRSP, 0, NULL);
 977
 978         if (ret) {
 979                 ret = -1;
 980                 goto done;
 981         }
 982
 983         /* Disable mesh autostart */
 984         if (priv->mesh_dev) {
 985                 memset(&mesh_access, 0, sizeof(mesh_access));
 986                 mesh_access.data[0] = cpu_to_le32(0);
 987                 ret = lbs_prepare_and_send_command(priv,
 988                                 CMD_MESH_ACCESS,
 989                                 CMD_ACT_MESH_SET_AUTOSTART_ENABLED,
 990                                 CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
 991                 if (ret) {
 992                         ret = -1;
 993                         goto done;
 994                 }
 995                 priv->mesh_autostart_enabled = 0;
 996         }
 997
 998         ret = 0;
 999 done:
1000         lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
1001         return ret;
1002 }
1003
1004 /**
1005  *  This function handles the timeout of command sending.
1006  *  It will re-send the same command again.
1007  */
1008 static void command_timer_fn(unsigned long data)
1009 {
1010         struct lbs_private *priv = (struct lbs_private *)data;
1011         struct lbs_adapter *adapter = priv->adapter;
1012         struct cmd_ctrl_node *ptempnode;
1013         struct cmd_ds_command *cmd;
1014         unsigned long flags;
1015
1016         ptempnode = adapter->cur_cmd;
1017         if (ptempnode == NULL) {
1018                 lbs_deb_fw("ptempnode empty\n");
1019                 return;
1020         }
1021
1022         cmd = (struct cmd_ds_command *)ptempnode->bufvirtualaddr;
1023         if (!cmd) {
1024                 lbs_deb_fw("cmd is NULL\n");
1025                 return;
1026         }
1027
1028         lbs_deb_fw("command_timer_fn fired, cmd %x\n", cmd->command);
1029
1030         if (!adapter->fw_ready)
1031                 return;
1032
1033         spin_lock_irqsave(&adapter->driver_lock, flags);
1034         adapter->cur_cmd = NULL;
1035         spin_unlock_irqrestore(&adapter->driver_lock, flags);
1036
1037         lbs_deb_fw("re-sending same command because of timeout\n");
1038         lbs_queue_cmd(adapter, ptempnode, 0);
1039
1040         wake_up_interruptible(&priv->waitq);
1041
1042         return;
1043 }
1044
1045 static int lbs_init_adapter(struct lbs_private *priv)
1046 {
1047         struct lbs_adapter *adapter = priv->adapter;
1048         size_t bufsize;
1049         int i, ret = 0;
1050
1051         /* Allocate buffer to store the BSSID list */
1052         bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
1053         adapter->networks = kzalloc(bufsize, GFP_KERNEL);
1054         if (!adapter->networks) {
1055                 lbs_pr_err("Out of memory allocating beacons\n");
1056                 ret = -1;
1057                 goto out;
1058         }
1059
1060         /* Initialize scan result lists */
1061         INIT_LIST_HEAD(&adapter->network_free_list);
1062         INIT_LIST_HEAD(&adapter->network_list);
1063         for (i = 0; i < MAX_NETWORK_COUNT; i++) {
1064                 list_add_tail(&adapter->networks[i].list,
1065                               &adapter->network_free_list);
1066         }
1067
1068         adapter->lbs_ps_confirm_sleep.seqnum = cpu_to_le16(++adapter->seqnum);
1069         adapter->lbs_ps_confirm_sleep.command =
1070             cpu_to_le16(CMD_802_11_PS_MODE);
1071         adapter->lbs_ps_confirm_sleep.size =
1072             cpu_to_le16(sizeof(struct PS_CMD_ConfirmSleep));
1073         adapter->lbs_ps_confirm_sleep.action =
1074             cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
1075
1076         memset(adapter->current_addr, 0xff, ETH_ALEN);
1077
1078         adapter->connect_status = LBS_DISCONNECTED;
1079         adapter->mesh_connect_status = LBS_DISCONNECTED;
1080         adapter->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
1081         adapter->mode = IW_MODE_INFRA;
1082         adapter->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;
1083         adapter->currentpacketfilter = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
1084         adapter->radioon = RADIO_ON;
1085         adapter->auto_rate = 1;
1086         adapter->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
1087         adapter->psmode = LBS802_11POWERMODECAM;
1088         adapter->psstate = PS_STATE_FULL_POWER;
1089
1090         mutex_init(&adapter->lock);
1091
1092         memset(&adapter->tx_queue_ps, 0, NR_TX_QUEUE*sizeof(struct sk_buff*));
1093         adapter->tx_queue_idx = 0;
1094         spin_lock_init(&adapter->txqueue_lock);
1095
1096         setup_timer(&adapter->command_timer, command_timer_fn,
1097                     (unsigned long)priv);
1098
1099         INIT_LIST_HEAD(&adapter->cmdfreeq);
1100         INIT_LIST_HEAD(&adapter->cmdpendingq);
1101
1102         spin_lock_init(&adapter->driver_lock);
1103         init_waitqueue_head(&adapter->cmd_pending);
1104
1105         /* Allocate the command buffers */
1106         if (lbs_allocate_cmd_buffer(priv)) {
1107                 lbs_pr_err("Out of memory allocating command buffers\n");
1108                 ret = -1;
1109         }
1110
1111 out:
1112         return ret;
1113 }
1114
1115 static void lbs_free_adapter(struct lbs_private *priv)
1116 {
1117         struct lbs_adapter *adapter = priv->adapter;
1118
1119         if (!adapter) {
1120                 lbs_deb_fw("why double free adapter?\n");
1121                 return;
1122         }
1123
1124         lbs_deb_fw("free command buffer\n");
1125         lbs_free_cmd_buffer(priv);
1126
1127         lbs_deb_fw("free command_timer\n");
1128         del_timer(&adapter->command_timer);
1129
1130         lbs_deb_fw("free scan results table\n");
1131         kfree(adapter->networks);
1132         adapter->networks = NULL;
1133
1134         /* Free the adapter object itself */
1135         lbs_deb_fw("free adapter\n");
1136         kfree(adapter);
1137         priv->adapter = NULL;
1138 }
1139
1140 /**
1141  * @brief This function adds the card. it will probe the
1142  * card, allocate the lbs_priv and initialize the device.
1143  *
1144  *  @param card    A pointer to card
1145  *  @return        A pointer to struct lbs_private structure
1146  */
1147 struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
1148 {
1149         struct net_device *dev = NULL;
1150         struct lbs_private *priv = NULL;
1151
1152         lbs_deb_enter(LBS_DEB_NET);
1153
1154         /* Allocate an Ethernet device and register it */
1155         dev = alloc_etherdev(sizeof(struct lbs_private));
1156         if (!dev) {
1157                 lbs_pr_err("init ethX device failed\n");
1158                 goto done;
1159         }
1160         priv = dev->priv;
1161
1162         /* allocate buffer for struct lbs_adapter */
1163         priv->adapter = kzalloc(sizeof(struct lbs_adapter), GFP_KERNEL);
1164         if (!priv->adapter) {
1165                 lbs_pr_err("allocate buffer for struct lbs_adapter failed\n");
1166                 goto err_kzalloc;
1167         }
1168
1169         if (lbs_init_adapter(priv)) {
1170                 lbs_pr_err("failed to initialize adapter structure.\n");
1171                 goto err_init_adapter;
1172         }
1173
1174         priv->dev = dev;
1175         priv->card = card;
1176         priv->mesh_open = 0;
1177         priv->infra_open = 0;
1178
1179         /* Setup the OS Interface to our functions */
1180         dev->open = lbs_open;
1181         dev->hard_start_xmit = lbs_pre_start_xmit;
1182         dev->stop = lbs_close;
1183         dev->set_mac_address = lbs_set_mac_address;
1184         dev->tx_timeout = lbs_tx_timeout;
1185         dev->get_stats = lbs_get_stats;
1186         dev->watchdog_timeo = 5 * HZ;
1187         dev->ethtool_ops = &lbs_ethtool_ops;
1188 #ifdef  WIRELESS_EXT
1189         dev->wireless_handlers = (struct iw_handler_def *)&lbs_handler_def;
1190 #endif
1191         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1192         dev->set_multicast_list = lbs_set_multicast_list;
1193
1194         SET_NETDEV_DEV(dev, dmdev);
1195
1196         priv->rtap_net_dev = NULL;
1197
1198         lbs_deb_thread("Starting main thread...\n");
1199         init_waitqueue_head(&priv->waitq);
1200         priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
1201         if (IS_ERR(priv->main_thread)) {
1202                 lbs_deb_thread("Error creating main thread.\n");
1203                 goto err_init_adapter;
1204         }
1205
1206         priv->work_thread = create_singlethread_workqueue("lbs_worker");
1207         INIT_DELAYED_WORK(&priv->assoc_work, lbs_association_worker);
1208         INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
1209         INIT_WORK(&priv->sync_channel, lbs_sync_channel);
1210
1211         goto done;
1212
1213 err_init_adapter:
1214         lbs_free_adapter(priv);
1215
1216 err_kzalloc:
1217         free_netdev(dev);
1218         priv = NULL;
1219
1220 done:
1221         lbs_deb_leave_args(LBS_DEB_NET, "priv %p", priv);
1222         return priv;
1223 }
1224 EXPORT_SYMBOL_GPL(lbs_add_card);
1225
1226
1227 int lbs_remove_card(struct lbs_private *priv)
1228 {
1229         struct lbs_adapter *adapter = priv->adapter;
1230         struct net_device *dev = priv->dev;
1231         union iwreq_data wrqu;
1232
1233         lbs_deb_enter(LBS_DEB_MAIN);
1234
1235         lbs_remove_rtap(priv);
1236
1237         dev = priv->dev;
1238         device_remove_file(&dev->dev, &dev_attr_lbs_rtap);
1239
1240         cancel_delayed_work(&priv->scan_work);
1241         cancel_delayed_work(&priv->assoc_work);
1242         destroy_workqueue(priv->work_thread);
1243
1244         if (adapter->psmode == LBS802_11POWERMODEMAX_PSP) {
1245                 adapter->psmode = LBS802_11POWERMODECAM;
1246                 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1247         }
1248
1249         memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1250         wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1251         wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1252
1253         /* Stop the thread servicing the interrupts */
1254         adapter->surpriseremoved = 1;
1255         kthread_stop(priv->main_thread);
1256
1257         lbs_free_adapter(priv);
1258
1259         priv->dev = NULL;
1260         free_netdev(dev);
1261
1262         lbs_deb_leave(LBS_DEB_MAIN);
1263         return 0;
1264 }
1265 EXPORT_SYMBOL_GPL(lbs_remove_card);
1266
1267
1268 int lbs_start_card(struct lbs_private *priv)
1269 {
1270         struct net_device *dev = priv->dev;
1271         int ret = -1;
1272
1273         lbs_deb_enter(LBS_DEB_MAIN);
1274
1275         /* poke the firmware */
1276         ret = lbs_setup_firmware(priv);
1277         if (ret)
1278                 goto done;
1279
1280         /* init 802.11d */
1281         lbs_init_11d(priv);
1282
1283         if (register_netdev(dev)) {
1284                 lbs_pr_err("cannot register ethX device\n");
1285                 goto done;
1286         }
1287         if (device_create_file(&dev->dev, &dev_attr_lbs_rtap))
1288                 lbs_pr_err("cannot register lbs_rtap attribute\n");
1289
1290         lbs_debugfs_init_one(priv, dev);
1291
1292         lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
1293
1294         ret = 0;
1295
1296 done:
1297         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1298         return ret;
1299 }
1300 EXPORT_SYMBOL_GPL(lbs_start_card);
1301
1302
1303 int lbs_stop_card(struct lbs_private *priv)
1304 {
1305         struct net_device *dev = priv->dev;
1306         int ret = -1;
1307         struct cmd_ctrl_node *cmdnode;
1308         unsigned long flags;
1309
1310         lbs_deb_enter(LBS_DEB_MAIN);
1311
1312         netif_stop_queue(priv->dev);
1313         netif_carrier_off(priv->dev);
1314
1315         lbs_debugfs_remove_one(priv);
1316
1317         /* Flush pending command nodes */
1318         spin_lock_irqsave(&priv->adapter->driver_lock, flags);
1319         list_for_each_entry(cmdnode, &priv->adapter->cmdpendingq, list) {
1320                 cmdnode->cmdwaitqwoken = 1;
1321                 wake_up_interruptible(&cmdnode->cmdwait_q);
1322         }
1323         spin_unlock_irqrestore(&priv->adapter->driver_lock, flags);
1324
1325         unregister_netdev(dev);
1326
1327         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1328         return ret;
1329 }
1330 EXPORT_SYMBOL_GPL(lbs_stop_card);
1331
1332
1333 /**
1334  * @brief This function adds mshX interface
1335  *
1336  *  @param priv    A pointer to the struct lbs_private structure
1337  *  @return        0 if successful, -X otherwise
1338  */
1339 int lbs_add_mesh(struct lbs_private *priv, struct device *dev)
1340 {
1341         struct net_device *mesh_dev = NULL;
1342         int ret = 0;
1343
1344         lbs_deb_enter(LBS_DEB_MESH);
1345
1346         /* Allocate a virtual mesh device */
1347         if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
1348                 lbs_deb_mesh("init mshX device failed\n");
1349                 ret = -ENOMEM;
1350                 goto done;
1351         }
1352         mesh_dev->priv = priv;
1353         priv->mesh_dev = mesh_dev;
1354
1355         mesh_dev->open = lbs_mesh_open;
1356         mesh_dev->hard_start_xmit = lbs_mesh_pre_start_xmit;
1357         mesh_dev->stop = lbs_mesh_close;
1358         mesh_dev->get_stats = lbs_get_stats;
1359         mesh_dev->set_mac_address = lbs_set_mac_address;
1360         mesh_dev->ethtool_ops = &lbs_ethtool_ops;
1361         memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
1362                         sizeof(priv->dev->dev_addr));
1363
1364         SET_NETDEV_DEV(priv->mesh_dev, dev);
1365
1366 #ifdef  WIRELESS_EXT
1367         mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
1368 #endif
1369         /* Register virtual mesh interface */
1370         ret = register_netdev(mesh_dev);
1371         if (ret) {
1372                 lbs_pr_err("cannot register mshX virtual interface\n");
1373                 goto err_free;
1374         }
1375
1376         ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1377         if (ret)
1378                 goto err_unregister;
1379
1380         /* Everything successful */
1381         ret = 0;
1382         goto done;
1383
1384 err_unregister:
1385         unregister_netdev(mesh_dev);
1386
1387 err_free:
1388         free_netdev(mesh_dev);
1389
1390 done:
1391         lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1392         return ret;
1393 }
1394 EXPORT_SYMBOL_GPL(lbs_add_mesh);
1395
1396
1397 void lbs_remove_mesh(struct lbs_private *priv)
1398 {
1399         struct net_device *mesh_dev;
1400
1401         lbs_deb_enter(LBS_DEB_MAIN);
1402
1403         if (!priv)
1404                 goto out;
1405
1406         mesh_dev = priv->mesh_dev;
1407
1408         netif_stop_queue(mesh_dev);
1409         netif_carrier_off(priv->mesh_dev);
1410
1411         sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1412         unregister_netdev(mesh_dev);
1413
1414         priv->mesh_dev = NULL ;
1415         free_netdev(mesh_dev);
1416
1417 out:
1418         lbs_deb_leave(LBS_DEB_MAIN);
1419 }
1420 EXPORT_SYMBOL_GPL(lbs_remove_mesh);
1421
1422 /**
1423  *  @brief This function finds the CFP in
1424  *  region_cfp_table based on region and band parameter.
1425  *
1426  *  @param region  The region code
1427  *  @param band    The band
1428  *  @param cfp_no  A pointer to CFP number
1429  *  @return        A pointer to CFP
1430  */
1431 struct chan_freq_power *lbs_get_region_cfp_table(u8 region, u8 band, int *cfp_no)
1432 {
1433         int i, end;
1434
1435         lbs_deb_enter(LBS_DEB_MAIN);
1436
1437         end = ARRAY_SIZE(region_cfp_table);
1438
1439         for (i = 0; i < end ; i++) {
1440                 lbs_deb_main("region_cfp_table[i].region=%d\n",
1441                         region_cfp_table[i].region);
1442                 if (region_cfp_table[i].region == region) {
1443                         *cfp_no = region_cfp_table[i].cfp_no_BG;
1444                         lbs_deb_leave(LBS_DEB_MAIN);
1445                         return region_cfp_table[i].cfp_BG;
1446                 }
1447         }
1448
1449         lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1450         return NULL;
1451 }
1452
1453 int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band)
1454 {
1455         struct lbs_adapter *adapter = priv->adapter;
1456         int ret = 0;
1457         int i = 0;
1458
1459         struct chan_freq_power *cfp;
1460         int cfp_no;
1461
1462         lbs_deb_enter(LBS_DEB_MAIN);
1463
1464         memset(adapter->region_channel, 0, sizeof(adapter->region_channel));
1465
1466         {
1467                 cfp = lbs_get_region_cfp_table(region, band, &cfp_no);
1468                 if (cfp != NULL) {
1469                         adapter->region_channel[i].nrcfp = cfp_no;
1470                         adapter->region_channel[i].CFP = cfp;
1471                 } else {
1472                         lbs_deb_main("wrong region code %#x in band B/G\n",
1473                                region);
1474                         ret = -1;
1475                         goto out;
1476                 }
1477                 adapter->region_channel[i].valid = 1;
1478                 adapter->region_channel[i].region = region;
1479                 adapter->region_channel[i].band = band;
1480                 i++;
1481         }
1482 out:
1483         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1484         return ret;
1485 }
1486
1487 /**
1488  *  @brief This function handles the interrupt. it will change PS
1489  *  state if applicable. it will wake up main_thread to handle
1490  *  the interrupt event as well.
1491  *
1492  *  @param dev     A pointer to net_device structure
1493  *  @return        n/a
1494  */
1495 void lbs_interrupt(struct net_device *dev)
1496 {
1497         struct lbs_private *priv = dev->priv;
1498
1499         lbs_deb_enter(LBS_DEB_THREAD);
1500
1501         lbs_deb_thread("lbs_interrupt: intcounter=%d\n",
1502                priv->adapter->intcounter);
1503
1504         priv->adapter->intcounter++;
1505
1506         if (priv->adapter->psstate == PS_STATE_SLEEP) {
1507                 priv->adapter->psstate = PS_STATE_AWAKE;
1508                 netif_wake_queue(dev);
1509                 if (priv->mesh_dev)
1510                         netif_wake_queue(priv->mesh_dev);
1511         }
1512
1513         wake_up_interruptible(&priv->waitq);
1514
1515         lbs_deb_leave(LBS_DEB_THREAD);
1516 }
1517 EXPORT_SYMBOL_GPL(lbs_interrupt);
1518
1519 int lbs_reset_device(struct lbs_private *priv)
1520 {
1521         int ret;
1522
1523         lbs_deb_enter(LBS_DEB_MAIN);
1524         ret = lbs_prepare_and_send_command(priv, CMD_802_11_RESET,
1525                                     CMD_ACT_HALT, 0, 0, NULL);
1526         msleep_interruptible(10);
1527
1528         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1529         return ret;
1530 }
1531 EXPORT_SYMBOL_GPL(lbs_reset_device);
1532
1533 static int __init lbs_init_module(void)
1534 {
1535         lbs_deb_enter(LBS_DEB_MAIN);
1536         lbs_debugfs_init();
1537         lbs_deb_leave(LBS_DEB_MAIN);
1538         return 0;
1539 }
1540
1541 static void __exit lbs_exit_module(void)
1542 {
1543         lbs_deb_enter(LBS_DEB_MAIN);
1544
1545         lbs_debugfs_remove();
1546
1547         lbs_deb_leave(LBS_DEB_MAIN);
1548 }
1549
1550 /*
1551  * rtap interface support fuctions
1552  */
1553
1554 static int lbs_rtap_open(struct net_device *dev)
1555 {
1556         netif_carrier_off(dev);
1557         netif_stop_queue(dev);
1558         return 0;
1559 }
1560
1561 static int lbs_rtap_stop(struct net_device *dev)
1562 {
1563         return 0;
1564 }
1565
1566 static int lbs_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1567 {
1568         netif_stop_queue(dev);
1569         return -EOPNOTSUPP;
1570 }
1571
1572 static struct net_device_stats *lbs_rtap_get_stats(struct net_device *dev)
1573 {
1574         struct lbs_private *priv = dev->priv;
1575         return &priv->ieee->stats;
1576 }
1577
1578
1579 void lbs_remove_rtap(struct lbs_private *priv)
1580 {
1581         if (priv->rtap_net_dev == NULL)
1582                 return;
1583         unregister_netdev(priv->rtap_net_dev);
1584         free_ieee80211(priv->rtap_net_dev);
1585         priv->rtap_net_dev = NULL;
1586 }
1587
1588 int lbs_add_rtap(struct lbs_private *priv)
1589 {
1590         int rc = 0;
1591
1592         if (priv->rtap_net_dev)
1593                 return -EPERM;
1594
1595         priv->rtap_net_dev = alloc_ieee80211(0);
1596         if (priv->rtap_net_dev == NULL)
1597                 return -ENOMEM;
1598
1599
1600         priv->ieee = netdev_priv(priv->rtap_net_dev);
1601
1602         strcpy(priv->rtap_net_dev->name, "rtap%d");
1603
1604         priv->rtap_net_dev->type = ARPHRD_IEEE80211_RADIOTAP;
1605         priv->rtap_net_dev->open = lbs_rtap_open;
1606         priv->rtap_net_dev->stop = lbs_rtap_stop;
1607         priv->rtap_net_dev->get_stats = lbs_rtap_get_stats;
1608         priv->rtap_net_dev->hard_start_xmit = lbs_rtap_hard_start_xmit;
1609         priv->rtap_net_dev->set_multicast_list = lbs_set_multicast_list;
1610         priv->rtap_net_dev->priv = priv;
1611
1612         priv->ieee->iw_mode = IW_MODE_MONITOR;
1613
1614         rc = register_netdev(priv->rtap_net_dev);
1615         if (rc) {
1616                 free_ieee80211(priv->rtap_net_dev);
1617                 priv->rtap_net_dev = NULL;
1618                 return rc;
1619         }
1620
1621         return 0;
1622 }
1623
1624
1625 module_init(lbs_init_module);
1626 module_exit(lbs_exit_module);
1627
1628 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1629 MODULE_AUTHOR("Marvell International Ltd.");
1630 MODULE_LICENSE("GPL");