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

   1 /**
   2   * This file contains the major functions in WLAN
   3   * driver. It includes init, exit, open, close and main
   4   * thread etc..
   5   */
   6
   7 #include <linux/moduleparam.h>
   8 #include <linux/delay.h>
   9 #include <linux/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
  25 #define DRIVER_RELEASE_VERSION "322.p1"
  26 const char libertas_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
  27 #ifdef  DEBUG
  28     "-dbg"
  29 #endif
  30     "";
  31
  32
  33 /* Module parameters */
  34 unsigned int libertas_debug = 0;
  35 module_param(libertas_debug, int, 0644);
  36 EXPORT_SYMBOL_GPL(libertas_debug);
  37
  38
  39 #define WLAN_TX_PWR_DEFAULT             20      /*100mW */
  40 #define WLAN_TX_PWR_US_DEFAULT          20      /*100mW */
  41 #define WLAN_TX_PWR_JP_DEFAULT          16      /*50mW */
  42 #define WLAN_TX_PWR_FR_DEFAULT          20      /*100mW */
  43 #define WLAN_TX_PWR_EMEA_DEFAULT        20      /*100mW */
  44
  45 /* Format { channel, frequency (MHz), maxtxpower } */
  46 /* band: 'B/G', region: USA FCC/Canada IC */
  47 static struct chan_freq_power channel_freq_power_US_BG[] = {
  48         {1, 2412, WLAN_TX_PWR_US_DEFAULT},
  49         {2, 2417, WLAN_TX_PWR_US_DEFAULT},
  50         {3, 2422, WLAN_TX_PWR_US_DEFAULT},
  51         {4, 2427, WLAN_TX_PWR_US_DEFAULT},
  52         {5, 2432, WLAN_TX_PWR_US_DEFAULT},
  53         {6, 2437, WLAN_TX_PWR_US_DEFAULT},
  54         {7, 2442, WLAN_TX_PWR_US_DEFAULT},
  55         {8, 2447, WLAN_TX_PWR_US_DEFAULT},
  56         {9, 2452, WLAN_TX_PWR_US_DEFAULT},
  57         {10, 2457, WLAN_TX_PWR_US_DEFAULT},
  58         {11, 2462, WLAN_TX_PWR_US_DEFAULT}
  59 };
  60
  61 /* band: 'B/G', region: Europe ETSI */
  62 static struct chan_freq_power channel_freq_power_EU_BG[] = {
  63         {1, 2412, WLAN_TX_PWR_EMEA_DEFAULT},
  64         {2, 2417, WLAN_TX_PWR_EMEA_DEFAULT},
  65         {3, 2422, WLAN_TX_PWR_EMEA_DEFAULT},
  66         {4, 2427, WLAN_TX_PWR_EMEA_DEFAULT},
  67         {5, 2432, WLAN_TX_PWR_EMEA_DEFAULT},
  68         {6, 2437, WLAN_TX_PWR_EMEA_DEFAULT},
  69         {7, 2442, WLAN_TX_PWR_EMEA_DEFAULT},
  70         {8, 2447, WLAN_TX_PWR_EMEA_DEFAULT},
  71         {9, 2452, WLAN_TX_PWR_EMEA_DEFAULT},
  72         {10, 2457, WLAN_TX_PWR_EMEA_DEFAULT},
  73         {11, 2462, WLAN_TX_PWR_EMEA_DEFAULT},
  74         {12, 2467, WLAN_TX_PWR_EMEA_DEFAULT},
  75         {13, 2472, WLAN_TX_PWR_EMEA_DEFAULT}
  76 };
  77
  78 /* band: 'B/G', region: Spain */
  79 static struct chan_freq_power channel_freq_power_SPN_BG[] = {
  80         {10, 2457, WLAN_TX_PWR_DEFAULT},
  81         {11, 2462, WLAN_TX_PWR_DEFAULT}
  82 };
  83
  84 /* band: 'B/G', region: France */
  85 static struct chan_freq_power channel_freq_power_FR_BG[] = {
  86         {10, 2457, WLAN_TX_PWR_FR_DEFAULT},
  87         {11, 2462, WLAN_TX_PWR_FR_DEFAULT},
  88         {12, 2467, WLAN_TX_PWR_FR_DEFAULT},
  89         {13, 2472, WLAN_TX_PWR_FR_DEFAULT}
  90 };
  91
  92 /* band: 'B/G', region: Japan */
  93 static struct chan_freq_power channel_freq_power_JPN_BG[] = {
  94         {1, 2412, WLAN_TX_PWR_JP_DEFAULT},
  95         {2, 2417, WLAN_TX_PWR_JP_DEFAULT},
  96         {3, 2422, WLAN_TX_PWR_JP_DEFAULT},
  97         {4, 2427, WLAN_TX_PWR_JP_DEFAULT},
  98         {5, 2432, WLAN_TX_PWR_JP_DEFAULT},
  99         {6, 2437, WLAN_TX_PWR_JP_DEFAULT},
 100         {7, 2442, WLAN_TX_PWR_JP_DEFAULT},
 101         {8, 2447, WLAN_TX_PWR_JP_DEFAULT},
 102         {9, 2452, WLAN_TX_PWR_JP_DEFAULT},
 103         {10, 2457, WLAN_TX_PWR_JP_DEFAULT},
 104         {11, 2462, WLAN_TX_PWR_JP_DEFAULT},
 105         {12, 2467, WLAN_TX_PWR_JP_DEFAULT},
 106         {13, 2472, WLAN_TX_PWR_JP_DEFAULT},
 107         {14, 2484, WLAN_TX_PWR_JP_DEFAULT}
 108 };
 109
 110 /**
 111  * the structure for channel, frequency and power
 112  */
 113 struct region_cfp_table {
 114         u8 region;
 115         struct chan_freq_power *cfp_BG;
 116         int cfp_no_BG;
 117 };
 118
 119 /**
 120  * the structure for the mapping between region and CFP
 121  */
 122 static struct region_cfp_table region_cfp_table[] = {
 123         {0x10,                  /*US FCC */
 124          channel_freq_power_US_BG,
 125          sizeof(channel_freq_power_US_BG) / sizeof(struct chan_freq_power),
 126          }
 127         ,
 128         {0x20,                  /*CANADA IC */
 129          channel_freq_power_US_BG,
 130          sizeof(channel_freq_power_US_BG) / sizeof(struct chan_freq_power),
 131          }
 132         ,
 133         {0x30, /*EU*/ channel_freq_power_EU_BG,
 134          sizeof(channel_freq_power_EU_BG) / sizeof(struct chan_freq_power),
 135          }
 136         ,
 137         {0x31, /*SPAIN*/ channel_freq_power_SPN_BG,
 138          sizeof(channel_freq_power_SPN_BG) / sizeof(struct chan_freq_power),
 139          }
 140         ,
 141         {0x32, /*FRANCE*/ channel_freq_power_FR_BG,
 142          sizeof(channel_freq_power_FR_BG) / sizeof(struct chan_freq_power),
 143          }
 144         ,
 145         {0x40, /*JAPAN*/ channel_freq_power_JPN_BG,
 146          sizeof(channel_freq_power_JPN_BG) / sizeof(struct chan_freq_power),
 147          }
 148         ,
 149 /*Add new region here */
 150 };
 151
 152 /**
 153  * the table to keep region code
 154  */
 155 u16 libertas_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
 156     { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
 157
 158 /**
 159  * 802.11b/g supported bitrates (in 500Kb/s units)
 160  */
 161 u8 libertas_bg_rates[MAX_RATES] =
 162     { 0x02, 0x04, 0x0b, 0x16, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
 163 0x00, 0x00 };
 164
 165 /**
 166  * FW rate table.  FW refers to rates by their index in this table, not by the
 167  * rate value itself.  Values of 0x00 are
 168  * reserved positions.
 169  */
 170 static u8 fw_data_rates[MAX_RATES] =
 171     { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,
 172       0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00
 173 };
 174
 175 /**
 176  *  @brief use index to get the data rate
 177  *
 178  *  @param idx                The index of data rate
 179  *  @return                     data rate or 0
 180  */
 181 u32 libertas_fw_index_to_data_rate(u8 idx)
 182 {
 183         if (idx >= sizeof(fw_data_rates))
 184                 idx = 0;
 185         return fw_data_rates[idx];
 186 }
 187
 188 /**
 189  *  @brief use rate to get the index
 190  *
 191  *  @param rate                 data rate
 192  *  @return                     index or 0
 193  */
 194 u8 libertas_data_rate_to_fw_index(u32 rate)
 195 {
 196         u8 i;
 197
 198         if (!rate)
 199                 return 0;
 200
 201         for (i = 0; i < sizeof(fw_data_rates); i++) {
 202                 if (rate == fw_data_rates[i])
 203                         return i;
 204         }
 205         return 0;
 206 }
 207
 208 /**
 209  * Attributes exported through sysfs
 210  */
 211
 212 /**
 213  * @brief Get function for sysfs attribute anycast_mask
 214  */
 215 static ssize_t libertas_anycast_get(struct device * dev,
 216                 struct device_attribute *attr, char * buf)
 217 {
 218         struct cmd_ds_mesh_access mesh_access;
 219
 220         memset(&mesh_access, 0, sizeof(mesh_access));
 221         libertas_prepare_and_send_command(to_net_dev(dev)->priv,
 222                         CMD_MESH_ACCESS,
 223                         CMD_ACT_MESH_GET_ANYCAST,
 224                         CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
 225
 226         return snprintf(buf, 12, "0x%X\n", le32_to_cpu(mesh_access.data[0]));
 227 }
 228
 229 /**
 230  * @brief Set function for sysfs attribute anycast_mask
 231  */
 232 static ssize_t libertas_anycast_set(struct device * dev,
 233                 struct device_attribute *attr, const char * buf, size_t count)
 234 {
 235         struct cmd_ds_mesh_access mesh_access;
 236         uint32_t datum;
 237
 238         memset(&mesh_access, 0, sizeof(mesh_access));
 239         sscanf(buf, "%x", &datum);
 240         mesh_access.data[0] = cpu_to_le32(datum);
 241
 242         libertas_prepare_and_send_command((to_net_dev(dev))->priv,
 243                         CMD_MESH_ACCESS,
 244                         CMD_ACT_MESH_SET_ANYCAST,
 245                         CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
 246         return strlen(buf);
 247 }
 248
 249 /**
 250  * anycast_mask attribute to be exported per mshX interface
 251  * through sysfs (/sys/class/net/mshX/anycast_mask)
 252  */
 253 static DEVICE_ATTR(anycast_mask, 0644, libertas_anycast_get, libertas_anycast_set);
 254
 255 static ssize_t libertas_autostart_enabled_get(struct device * dev,
 256                 struct device_attribute *attr, char * buf)
 257 {
 258         struct cmd_ds_mesh_access mesh_access;
 259
 260         memset(&mesh_access, 0, sizeof(mesh_access));
 261         libertas_prepare_and_send_command(to_net_dev(dev)->priv,
 262                         CMD_MESH_ACCESS,
 263                         CMD_ACT_MESH_GET_AUTOSTART_ENABLED,
 264                         CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
 265
 266         return sprintf(buf, "%d\n", le32_to_cpu(mesh_access.data[0]));
 267 }
 268
 269 static ssize_t libertas_autostart_enabled_set(struct device * dev,
 270                 struct device_attribute *attr, const char * buf, size_t count)
 271 {
 272         struct cmd_ds_mesh_access mesh_access;
 273         uint32_t datum;
 274         wlan_private * priv = (to_net_dev(dev))->priv;
 275         int ret;
 276
 277         memset(&mesh_access, 0, sizeof(mesh_access));
 278         sscanf(buf, "%d", &datum);
 279         mesh_access.data[0] = cpu_to_le32(datum);
 280
 281         ret = libertas_prepare_and_send_command(priv,
 282                         CMD_MESH_ACCESS,
 283                         CMD_ACT_MESH_SET_AUTOSTART_ENABLED,
 284                         CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
 285         if (ret == 0)
 286                 priv->mesh_autostart_enabled = datum ? 1 : 0;
 287
 288         return strlen(buf);
 289 }
 290
 291 static DEVICE_ATTR(autostart_enabled, 0644,
 292                 libertas_autostart_enabled_get, libertas_autostart_enabled_set);
 293
 294 static struct attribute *libertas_mesh_sysfs_entries[] = {
 295         &dev_attr_anycast_mask.attr,
 296         &dev_attr_autostart_enabled.attr,
 297         NULL,
 298 };
 299
 300 static struct attribute_group libertas_mesh_attr_group = {
 301         .attrs = libertas_mesh_sysfs_entries,
 302 };
 303
 304 /**
 305  *  @brief Check if the device can be open and wait if necessary.
 306  *
 307  *  @param dev     A pointer to net_device structure
 308  *  @return        0
 309  *
 310  * For USB adapter, on some systems the device open handler will be
 311  * called before FW ready. Use the following flag check and wait
 312  * function to work around the issue.
 313  *
 314  */
 315 static int pre_open_check(struct net_device *dev)
 316 {
 317         wlan_private *priv = (wlan_private *) dev->priv;
 318         wlan_adapter *adapter = priv->adapter;
 319         int i = 0;
 320
 321         while (!adapter->fw_ready && i < 20) {
 322                 i++;
 323                 msleep_interruptible(100);
 324         }
 325         if (!adapter->fw_ready) {
 326                 lbs_pr_err("firmware not ready\n");
 327                 return -1;
 328         }
 329
 330         return 0;
 331 }
 332
 333 /**
 334  *  @brief This function opens the device
 335  *
 336  *  @param dev     A pointer to net_device structure
 337  *  @return        0
 338  */
 339 static int libertas_dev_open(struct net_device *dev)
 340 {
 341         wlan_private *priv = (wlan_private *) dev->priv;
 342         wlan_adapter *adapter = priv->adapter;
 343
 344         lbs_deb_enter(LBS_DEB_NET);
 345
 346         priv->open = 1;
 347
 348         if (adapter->connect_status == LIBERTAS_CONNECTED) {
 349                 netif_carrier_on(priv->dev);
 350                 if (priv->mesh_dev)
 351                         netif_carrier_on(priv->mesh_dev);
 352         } else {
 353                 netif_carrier_off(priv->dev);
 354                 if (priv->mesh_dev)
 355                         netif_carrier_off(priv->mesh_dev);
 356         }
 357
 358         lbs_deb_leave(LBS_DEB_NET);
 359         return 0;
 360 }
 361 /**
 362  *  @brief This function opens the mshX interface
 363  *
 364  *  @param dev     A pointer to net_device structure
 365  *  @return        0
 366  */
 367 static int libertas_mesh_open(struct net_device *dev)
 368 {
 369         wlan_private *priv = (wlan_private *) dev->priv ;
 370
 371         if (pre_open_check(dev) == -1)
 372                 return -1;
 373         priv->mesh_open = 1 ;
 374         netif_wake_queue(priv->mesh_dev);
 375         if (priv->infra_open == 0)
 376                 return libertas_dev_open(priv->dev) ;
 377         return 0;
 378 }
 379
 380 /**
 381  *  @brief This function opens the ethX interface
 382  *
 383  *  @param dev     A pointer to net_device structure
 384  *  @return        0
 385  */
 386 static int libertas_open(struct net_device *dev)
 387 {
 388         wlan_private *priv = (wlan_private *) dev->priv ;
 389
 390         if(pre_open_check(dev) == -1)
 391                 return -1;
 392         priv->infra_open = 1 ;
 393         netif_wake_queue(priv->dev);
 394         if (priv->open == 0)
 395                 return libertas_dev_open(priv->dev) ;
 396         return 0;
 397 }
 398
 399 static int libertas_dev_close(struct net_device *dev)
 400 {
 401         wlan_private *priv = dev->priv;
 402
 403         lbs_deb_enter(LBS_DEB_NET);
 404
 405         netif_carrier_off(priv->dev);
 406         priv->open = 0;
 407
 408         lbs_deb_leave(LBS_DEB_NET);
 409         return 0;
 410 }
 411
 412 /**
 413  *  @brief This function closes the mshX interface
 414  *
 415  *  @param dev     A pointer to net_device structure
 416  *  @return        0
 417  */
 418 static int libertas_mesh_close(struct net_device *dev)
 419 {
 420         wlan_private *priv = (wlan_private *) (dev->priv);
 421
 422         priv->mesh_open = 0;
 423         netif_stop_queue(priv->mesh_dev);
 424         if (priv->infra_open == 0)
 425                 return libertas_dev_close(dev);
 426         else
 427                 return 0;
 428 }
 429
 430 /**
 431  *  @brief This function closes the ethX interface
 432  *
 433  *  @param dev     A pointer to net_device structure
 434  *  @return        0
 435  */
 436 static int libertas_close(struct net_device *dev)
 437 {
 438         wlan_private *priv = (wlan_private *) dev->priv;
 439
 440         netif_stop_queue(dev);
 441         priv->infra_open = 0;
 442         if (priv->mesh_open == 0)
 443                 return libertas_dev_close(dev);
 444         else
 445                 return 0;
 446 }
 447
 448
 449 static int libertas_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 450 {
 451         int ret = 0;
 452         wlan_private *priv = dev->priv;
 453
 454         lbs_deb_enter(LBS_DEB_NET);
 455
 456         if (priv->dnld_sent || priv->adapter->TxLockFlag) {
 457                 priv->stats.tx_dropped++;
 458                 goto done;
 459         }
 460
 461         netif_stop_queue(priv->dev);
 462         if (priv->mesh_dev)
 463                 netif_stop_queue(priv->mesh_dev);
 464
 465         if (libertas_process_tx(priv, skb) == 0)
 466                 dev->trans_start = jiffies;
 467 done:
 468         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 469         return ret;
 470 }
 471
 472 /**
 473  * @brief Mark mesh packets and handover them to libertas_hard_start_xmit
 474  *
 475  */
 476 static int libertas_mesh_pre_start_xmit(struct sk_buff *skb,
 477                 struct net_device *dev)
 478 {
 479         wlan_private *priv = dev->priv;
 480         int ret;
 481
 482         lbs_deb_enter(LBS_DEB_MESH);
 483
 484         SET_MESH_FRAME(skb);
 485
 486         ret = libertas_hard_start_xmit(skb, priv->dev);
 487         lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
 488         return ret;
 489 }
 490
 491 /**
 492  * @brief Mark non-mesh packets and handover them to libertas_hard_start_xmit
 493  *
 494  */
 495 static int libertas_pre_start_xmit(struct sk_buff *skb, struct net_device *dev)
 496 {
 497         int ret;
 498
 499         lbs_deb_enter(LBS_DEB_NET);
 500
 501         UNSET_MESH_FRAME(skb);
 502
 503         ret = libertas_hard_start_xmit(skb, dev);
 504         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 505         return ret;
 506 }
 507
 508 static void libertas_tx_timeout(struct net_device *dev)
 509 {
 510         wlan_private *priv = (wlan_private *) dev->priv;
 511
 512         lbs_deb_enter(LBS_DEB_TX);
 513
 514         lbs_pr_err("tx watch dog timeout\n");
 515
 516         priv->dnld_sent = DNLD_RES_RECEIVED;
 517         dev->trans_start = jiffies;
 518
 519         if (priv->adapter->currenttxskb) {
 520                 if (priv->adapter->radiomode == WLAN_RADIOMODE_RADIOTAP) {
 521                         /* If we are here, we have not received feedback from
 522                            the previous packet.  Assume TX_FAIL and move on. */
 523                         priv->adapter->eventcause = 0x01000000;
 524                         libertas_send_tx_feedback(priv);
 525                 } else
 526                         wake_up_interruptible(&priv->waitq);
 527         } else if (priv->adapter->connect_status == LIBERTAS_CONNECTED) {
 528                 netif_wake_queue(priv->dev);
 529                 if (priv->mesh_dev)
 530                         netif_wake_queue(priv->mesh_dev);
 531         }
 532
 533         lbs_deb_leave(LBS_DEB_TX);
 534 }
 535
 536 /**
 537  *  @brief This function returns the network statistics
 538  *
 539  *  @param dev     A pointer to wlan_private structure
 540  *  @return        A pointer to net_device_stats structure
 541  */
 542 static struct net_device_stats *libertas_get_stats(struct net_device *dev)
 543 {
 544         wlan_private *priv = (wlan_private *) dev->priv;
 545
 546         return &priv->stats;
 547 }
 548
 549 static int libertas_set_mac_address(struct net_device *dev, void *addr)
 550 {
 551         int ret = 0;
 552         wlan_private *priv = (wlan_private *) dev->priv;
 553         wlan_adapter *adapter = priv->adapter;
 554         struct sockaddr *phwaddr = addr;
 555
 556         lbs_deb_enter(LBS_DEB_NET);
 557
 558         /* In case it was called from the mesh device */
 559         dev = priv->dev ;
 560
 561         memset(adapter->current_addr, 0, ETH_ALEN);
 562
 563         /* dev->dev_addr is 8 bytes */
 564         lbs_deb_hex(LBS_DEB_NET, "dev->dev_addr", dev->dev_addr, ETH_ALEN);
 565
 566         lbs_deb_hex(LBS_DEB_NET, "addr", phwaddr->sa_data, ETH_ALEN);
 567         memcpy(adapter->current_addr, phwaddr->sa_data, ETH_ALEN);
 568
 569         ret = libertas_prepare_and_send_command(priv, CMD_802_11_MAC_ADDRESS,
 570                                     CMD_ACT_SET,
 571                                     CMD_OPTION_WAITFORRSP, 0, NULL);
 572
 573         if (ret) {
 574                 lbs_deb_net("set MAC address failed\n");
 575                 ret = -1;
 576                 goto done;
 577         }
 578
 579         lbs_deb_hex(LBS_DEB_NET, "adapter->macaddr", adapter->current_addr, ETH_ALEN);
 580         memcpy(dev->dev_addr, adapter->current_addr, ETH_ALEN);
 581         if (priv->mesh_dev)
 582                 memcpy(priv->mesh_dev->dev_addr, adapter->current_addr, ETH_ALEN);
 583
 584 done:
 585         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 586         return ret;
 587 }
 588
 589 static int libertas_copy_multicast_address(wlan_adapter * adapter,
 590                                      struct net_device *dev)
 591 {
 592         int i = 0;
 593         struct dev_mc_list *mcptr = dev->mc_list;
 594
 595         for (i = 0; i < dev->mc_count; i++) {
 596                 memcpy(&adapter->multicastlist[i], mcptr->dmi_addr, ETH_ALEN);
 597                 mcptr = mcptr->next;
 598         }
 599
 600         return i;
 601
 602 }
 603
 604 static void libertas_set_multicast_list(struct net_device *dev)
 605 {
 606         wlan_private *priv = dev->priv;
 607         wlan_adapter *adapter = priv->adapter;
 608         int oldpacketfilter;
 609
 610         lbs_deb_enter(LBS_DEB_NET);
 611
 612         oldpacketfilter = adapter->currentpacketfilter;
 613
 614         if (dev->flags & IFF_PROMISC) {
 615                 lbs_deb_net("enable promiscuous mode\n");
 616                 adapter->currentpacketfilter |=
 617                     CMD_ACT_MAC_PROMISCUOUS_ENABLE;
 618                 adapter->currentpacketfilter &=
 619                     ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
 620                       CMD_ACT_MAC_MULTICAST_ENABLE);
 621         } else {
 622                 /* Multicast */
 623                 adapter->currentpacketfilter &=
 624                     ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
 625
 626                 if (dev->flags & IFF_ALLMULTI || dev->mc_count >
 627                     MRVDRV_MAX_MULTICAST_LIST_SIZE) {
 628                         lbs_deb_net( "enabling all multicast\n");
 629                         adapter->currentpacketfilter |=
 630                             CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
 631                         adapter->currentpacketfilter &=
 632                             ~CMD_ACT_MAC_MULTICAST_ENABLE;
 633                 } else {
 634                         adapter->currentpacketfilter &=
 635                             ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
 636
 637                         if (!dev->mc_count) {
 638                                 lbs_deb_net("no multicast addresses, "
 639                                        "disabling multicast\n");
 640                                 adapter->currentpacketfilter &=
 641                                     ~CMD_ACT_MAC_MULTICAST_ENABLE;
 642                         } else {
 643                                 int i;
 644
 645                                 adapter->currentpacketfilter |=
 646                                     CMD_ACT_MAC_MULTICAST_ENABLE;
 647
 648                                 adapter->nr_of_multicastmacaddr =
 649                                     libertas_copy_multicast_address(adapter, dev);
 650
 651                                 lbs_deb_net("multicast addresses: %d\n",
 652                                        dev->mc_count);
 653
 654                                 for (i = 0; i < dev->mc_count; i++) {
 655                                         lbs_deb_net("Multicast address %d:"
 656                                                MAC_FMT "\n", i,
 657                                                adapter->multicastlist[i][0],
 658                                                adapter->multicastlist[i][1],
 659                                                adapter->multicastlist[i][2],
 660                                                adapter->multicastlist[i][3],
 661                                                adapter->multicastlist[i][4],
 662                                                adapter->multicastlist[i][5]);
 663                                 }
 664                                 /* send multicast addresses to firmware */
 665                                 libertas_prepare_and_send_command(priv,
 666                                                       CMD_MAC_MULTICAST_ADR,
 667                                                       CMD_ACT_SET, 0, 0,
 668                                                       NULL);
 669                         }
 670                 }
 671         }
 672
 673         if (adapter->currentpacketfilter != oldpacketfilter) {
 674                 libertas_set_mac_packet_filter(priv);
 675         }
 676
 677         lbs_deb_leave(LBS_DEB_NET);
 678 }
 679
 680 /**
 681  *  @brief This function handles the major jobs in the WLAN driver.
 682  *  It handles all events generated by firmware, RX data received
 683  *  from firmware and TX data sent from kernel.
 684  *
 685  *  @param data    A pointer to wlan_thread structure
 686  *  @return        0
 687  */
 688 static int libertas_thread(void *data)
 689 {
 690         struct net_device *dev = data;
 691         wlan_private *priv = dev->priv;
 692         wlan_adapter *adapter = priv->adapter;
 693         wait_queue_t wait;
 694         u8 ireg = 0;
 695
 696         lbs_deb_enter(LBS_DEB_THREAD);
 697
 698         init_waitqueue_entry(&wait, current);
 699
 700         for (;;) {
 701                 lbs_deb_thread( "main-thread 111: intcounter=%d "
 702                        "currenttxskb=%p dnld_sent=%d\n",
 703                        adapter->intcounter,
 704                        adapter->currenttxskb, priv->dnld_sent);
 705
 706                 add_wait_queue(&priv->waitq, &wait);
 707                 set_current_state(TASK_INTERRUPTIBLE);
 708                 spin_lock_irq(&adapter->driver_lock);
 709                 if ((adapter->psstate == PS_STATE_SLEEP) ||
 710                     (!adapter->intcounter
 711                      && (priv->dnld_sent || adapter->cur_cmd ||
 712                          list_empty(&adapter->cmdpendingq)))) {
 713                         lbs_deb_thread(
 714                                "main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
 715                                adapter->connect_status, adapter->intcounter,
 716                                adapter->psmode, adapter->psstate);
 717                         spin_unlock_irq(&adapter->driver_lock);
 718                         schedule();
 719                 } else
 720                         spin_unlock_irq(&adapter->driver_lock);
 721
 722
 723                 lbs_deb_thread(
 724                        "main-thread 222 (waking up): intcounter=%d currenttxskb=%p "
 725                        "dnld_sent=%d\n", adapter->intcounter,
 726                        adapter->currenttxskb, priv->dnld_sent);
 727
 728                 set_current_state(TASK_RUNNING);
 729                 remove_wait_queue(&priv->waitq, &wait);
 730                 try_to_freeze();
 731
 732                 lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p "
 733                        "dnld_sent=%d\n",
 734                        adapter->intcounter,
 735                        adapter->currenttxskb, priv->dnld_sent);
 736
 737                 if (kthread_should_stop()
 738                     || adapter->surpriseremoved) {
 739                         lbs_deb_thread(
 740                                "main-thread: break from main thread: surpriseremoved=0x%x\n",
 741                                adapter->surpriseremoved);
 742                         break;
 743                 }
 744
 745
 746                 spin_lock_irq(&adapter->driver_lock);
 747                 if (adapter->intcounter) {
 748                         u8 int_status;
 749                         adapter->intcounter = 0;
 750                         int_status = priv->hw_get_int_status(priv, &ireg);
 751
 752                         if (int_status) {
 753                                 lbs_deb_thread(
 754                                        "main-thread: reading HOST_INT_STATUS_REG failed\n");
 755                                 spin_unlock_irq(&adapter->driver_lock);
 756                                 continue;
 757                         }
 758                         adapter->hisregcpy |= ireg;
 759                 }
 760
 761                 lbs_deb_thread("main-thread 444: intcounter=%d currenttxskb=%p "
 762                        "dnld_sent=%d\n",
 763                        adapter->intcounter,
 764                        adapter->currenttxskb, priv->dnld_sent);
 765
 766                 /* command response? */
 767                 if (adapter->hisregcpy & MRVDRV_CMD_UPLD_RDY) {
 768                         lbs_deb_thread("main-thread: cmd response ready\n");
 769
 770                         adapter->hisregcpy &= ~MRVDRV_CMD_UPLD_RDY;
 771                         spin_unlock_irq(&adapter->driver_lock);
 772                         libertas_process_rx_command(priv);
 773                         spin_lock_irq(&adapter->driver_lock);
 774                 }
 775
 776                 /* Any Card Event */
 777                 if (adapter->hisregcpy & MRVDRV_CARDEVENT) {
 778                         lbs_deb_thread("main-thread: Card Event Activity\n");
 779
 780                         adapter->hisregcpy &= ~MRVDRV_CARDEVENT;
 781
 782                         if (priv->hw_read_event_cause(priv)) {
 783                                 lbs_pr_alert(
 784                                        "main-thread: hw_read_event_cause failed\n");
 785                                 spin_unlock_irq(&adapter->driver_lock);
 786                                 continue;
 787                         }
 788                         spin_unlock_irq(&adapter->driver_lock);
 789                         libertas_process_event(priv);
 790                 } else
 791                         spin_unlock_irq(&adapter->driver_lock);
 792
 793                 /* Check if we need to confirm Sleep Request received previously */
 794                 if (adapter->psstate == PS_STATE_PRE_SLEEP) {
 795                         if (!priv->dnld_sent && !adapter->cur_cmd) {
 796                                 if (adapter->connect_status ==
 797                                     LIBERTAS_CONNECTED) {
 798                                         lbs_deb_thread(
 799                                                "main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p "
 800                                                "dnld_sent=%d cur_cmd=%p, confirm now\n",
 801                                                adapter->intcounter,
 802                                                adapter->currenttxskb,
 803                                                priv->dnld_sent,
 804                                                adapter->cur_cmd);
 805
 806                                         libertas_ps_confirm_sleep(priv,
 807                                                        (u16) adapter->psmode);
 808                                 } else {
 809                                         /* workaround for firmware sending
 810                                          * deauth/linkloss event immediately
 811                                          * after sleep request, remove this
 812                                          * after firmware fixes it
 813                                          */
 814                                         adapter->psstate = PS_STATE_AWAKE;
 815                                         lbs_pr_alert(
 816                                                "main-thread: ignore PS_SleepConfirm in non-connected state\n");
 817                                 }
 818                         }
 819                 }
 820
 821                 /* The PS state is changed during processing of Sleep Request
 822                  * event above
 823                  */
 824                 if ((priv->adapter->psstate == PS_STATE_SLEEP) ||
 825                     (priv->adapter->psstate == PS_STATE_PRE_SLEEP))
 826                         continue;
 827
 828                 /* Execute the next command */
 829                 if (!priv->dnld_sent && !priv->adapter->cur_cmd)
 830                         libertas_execute_next_command(priv);
 831
 832                 /* Wake-up command waiters which can't sleep in
 833                  * libertas_prepare_and_send_command
 834                  */
 835                 if (!adapter->nr_cmd_pending)
 836                         wake_up_all(&adapter->cmd_pending);
 837
 838                 libertas_tx_runqueue(priv);
 839         }
 840
 841         del_timer(&adapter->command_timer);
 842         adapter->nr_cmd_pending = 0;
 843         wake_up_all(&adapter->cmd_pending);
 844
 845         lbs_deb_leave(LBS_DEB_THREAD);
 846         return 0;
 847 }
 848
 849 /**
 850  *  @brief This function downloads firmware image, gets
 851  *  HW spec from firmware and set basic parameters to
 852  *  firmware.
 853  *
 854  *  @param priv    A pointer to wlan_private structure
 855  *  @return        0 or -1
 856  */
 857 static int wlan_setup_station_hw(wlan_private * priv)
 858 {
 859         int ret = -1;
 860         wlan_adapter *adapter = priv->adapter;
 861         struct cmd_ds_mesh_access mesh_access;
 862
 863         lbs_deb_enter(LBS_DEB_FW);
 864
 865         ret = priv->hw_prog_firmware(priv);
 866
 867         if (ret) {
 868                 lbs_deb_fw("bootloader in invalid state\n");
 869                 ret = -1;
 870                 goto done;
 871         }
 872
 873         /*
 874          * Read MAC address from HW
 875          */
 876         memset(adapter->current_addr, 0xff, ETH_ALEN);
 877
 878         ret = libertas_prepare_and_send_command(priv, CMD_GET_HW_SPEC,
 879                                     0, CMD_OPTION_WAITFORRSP, 0, NULL);
 880
 881         if (ret) {
 882                 ret = -1;
 883                 goto done;
 884         }
 885
 886         libertas_set_mac_packet_filter(priv);
 887
 888         /* Get the supported Data rates */
 889         ret = libertas_prepare_and_send_command(priv, CMD_802_11_DATA_RATE,
 890                                     CMD_ACT_GET_TX_RATE,
 891                                     CMD_OPTION_WAITFORRSP, 0, NULL);
 892
 893         if (ret) {
 894                 ret = -1;
 895                 goto done;
 896         }
 897
 898         /* Disable mesh autostart */
 899         if (priv->mesh_dev) {
 900                 memset(&mesh_access, 0, sizeof(mesh_access));
 901                 mesh_access.data[0] = cpu_to_le32(0);
 902                 ret = libertas_prepare_and_send_command(priv,
 903                                 CMD_MESH_ACCESS,
 904                                 CMD_ACT_MESH_SET_AUTOSTART_ENABLED,
 905                                 CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
 906                 if (ret) {
 907                         ret = -1;
 908                         goto done;
 909                 }
 910                 priv->mesh_autostart_enabled = 0;
 911         }
 912
 913         ret = 0;
 914 done:
 915         lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
 916         return ret;
 917 }
 918
 919 static void command_timer_fn(unsigned long data);
 920
 921 /**
 922  *  This function handles the timeout of command sending.
 923  *  It will re-send the same command again.
 924  */
 925 static void command_timer_fn(unsigned long data)
 926 {
 927         wlan_private *priv = (wlan_private *)data;
 928         wlan_adapter *adapter = priv->adapter;
 929         struct cmd_ctrl_node *ptempnode;
 930         struct cmd_ds_command *cmd;
 931         unsigned long flags;
 932
 933         ptempnode = adapter->cur_cmd;
 934         if (ptempnode == NULL) {
 935                 lbs_deb_fw("ptempnode empty\n");
 936                 return;
 937         }
 938
 939         cmd = (struct cmd_ds_command *)ptempnode->bufvirtualaddr;
 940         if (!cmd) {
 941                 lbs_deb_fw("cmd is NULL\n");
 942                 return;
 943         }
 944
 945         lbs_deb_fw("command_timer_fn fired, cmd %x\n", cmd->command);
 946
 947         if (!adapter->fw_ready)
 948                 return;
 949
 950         spin_lock_irqsave(&adapter->driver_lock, flags);
 951         adapter->cur_cmd = NULL;
 952         spin_unlock_irqrestore(&adapter->driver_lock, flags);
 953
 954         lbs_deb_fw("re-sending same command because of timeout\n");
 955         libertas_queue_cmd(adapter, ptempnode, 0);
 956
 957         wake_up_interruptible(&priv->waitq);
 958
 959         return;
 960 }
 961
 962 static void libertas_free_adapter(wlan_private * priv)
 963 {
 964         wlan_adapter *adapter = priv->adapter;
 965
 966         if (!adapter) {
 967                 lbs_deb_fw("why double free adapter?\n");
 968                 return;
 969         }
 970
 971         lbs_deb_fw("free command buffer\n");
 972         libertas_free_cmd_buffer(priv);
 973
 974         lbs_deb_fw("free command_timer\n");
 975         del_timer(&adapter->command_timer);
 976
 977         lbs_deb_fw("free scan results table\n");
 978         kfree(adapter->networks);
 979         adapter->networks = NULL;
 980
 981         /* Free the adapter object itself */
 982         lbs_deb_fw("free adapter\n");
 983         kfree(adapter);
 984         priv->adapter = NULL;
 985 }
 986
 987 static int wlan_allocate_adapter(wlan_private * priv)
 988 {
 989         size_t bufsize;
 990         wlan_adapter *adapter = priv->adapter;
 991
 992         /* Allocate buffer to store the BSSID list */
 993         bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
 994         adapter->networks = kzalloc(bufsize, GFP_KERNEL);
 995         if (!adapter->networks) {
 996                 lbs_pr_err("Out of memory allocating beacons\n");
 997                 libertas_free_adapter(priv);
 998                 return -ENOMEM;
 999         }
1000
1001         /* Allocate the command buffers */
1002         libertas_allocate_cmd_buffer(priv);
1003
1004         memset(&adapter->libertas_ps_confirm_sleep, 0, sizeof(struct PS_CMD_ConfirmSleep));
1005         adapter->libertas_ps_confirm_sleep.seqnum = cpu_to_le16(++adapter->seqnum);
1006         adapter->libertas_ps_confirm_sleep.command =
1007             cpu_to_le16(CMD_802_11_PS_MODE);
1008         adapter->libertas_ps_confirm_sleep.size =
1009             cpu_to_le16(sizeof(struct PS_CMD_ConfirmSleep));
1010         adapter->libertas_ps_confirm_sleep.result = 0;
1011         adapter->libertas_ps_confirm_sleep.action =
1012             cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
1013
1014         return 0;
1015 }
1016
1017 static void wlan_init_adapter(wlan_private * priv)
1018 {
1019         wlan_adapter *adapter = priv->adapter;
1020         int i;
1021
1022         adapter->connect_status = LIBERTAS_DISCONNECTED;
1023         memset(adapter->current_addr, 0xff, ETH_ALEN);
1024
1025         /* 802.11 specific */
1026         adapter->secinfo.wep_enabled = 0;
1027         for (i = 0; i < sizeof(adapter->wep_keys) / sizeof(adapter->wep_keys[0]);
1028              i++)
1029                 memset(&adapter->wep_keys[i], 0, sizeof(struct enc_key));
1030         adapter->wep_tx_keyidx = 0;
1031         adapter->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
1032         adapter->mode = IW_MODE_INFRA;
1033
1034         adapter->pending_assoc_req = NULL;
1035         adapter->in_progress_assoc_req = NULL;
1036
1037         /* Initialize scan result lists */
1038         INIT_LIST_HEAD(&adapter->network_free_list);
1039         INIT_LIST_HEAD(&adapter->network_list);
1040         for (i = 0; i < MAX_NETWORK_COUNT; i++) {
1041                 list_add_tail(&adapter->networks[i].list,
1042                               &adapter->network_free_list);
1043         }
1044
1045         mutex_init(&adapter->lock);
1046
1047         memset(&adapter->curbssparams, 0, sizeof(adapter->curbssparams));
1048         adapter->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;
1049
1050         /* PnP and power profile */
1051         adapter->surpriseremoved = 0;
1052
1053         adapter->currentpacketfilter =
1054             CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
1055
1056         adapter->radioon = RADIO_ON;
1057
1058         adapter->auto_rate = 1;
1059         adapter->cur_rate = 0;
1060
1061         // set default capabilities
1062         adapter->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
1063
1064         adapter->psmode = WLAN802_11POWERMODECAM;
1065
1066         adapter->psstate = PS_STATE_FULL_POWER;
1067         adapter->needtowakeup = 0;
1068
1069         adapter->intcounter = 0;
1070
1071         adapter->currenttxskb = NULL;
1072
1073         memset(&adapter->tx_queue_ps, 0, NR_TX_QUEUE*sizeof(struct sk_buff*));
1074         adapter->tx_queue_idx = 0;
1075         spin_lock_init(&adapter->txqueue_lock);
1076
1077         return;
1078 }
1079
1080 static int libertas_init_fw(wlan_private * priv)
1081 {
1082         int ret = -1;
1083         wlan_adapter *adapter = priv->adapter;
1084
1085         lbs_deb_enter(LBS_DEB_FW);
1086
1087         /* Allocate adapter structure */
1088         if ((ret = wlan_allocate_adapter(priv)) != 0)
1089                 goto done;
1090
1091         /* init adapter structure */
1092         wlan_init_adapter(priv);
1093
1094         /* init timer etc. */
1095         setup_timer(&adapter->command_timer, command_timer_fn,
1096                         (unsigned long)priv);
1097
1098         /* download fimrware etc. */
1099         if ((ret = wlan_setup_station_hw(priv)) != 0) {
1100                 del_timer_sync(&adapter->command_timer);
1101                 goto done;
1102         }
1103
1104         /* init 802.11d */
1105         libertas_init_11d(priv);
1106
1107         ret = 0;
1108 done:
1109         lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
1110         return ret;
1111 }
1112
1113 /**
1114  * @brief This function adds the card. it will probe the
1115  * card, allocate the wlan_priv and initialize the device.
1116  *
1117  *  @param card    A pointer to card
1118  *  @return        A pointer to wlan_private structure
1119  */
1120 wlan_private *libertas_add_card(void *card, struct device *dmdev)
1121 {
1122         struct net_device *dev = NULL;
1123         wlan_private *priv = NULL;
1124
1125         lbs_deb_enter(LBS_DEB_NET);
1126
1127         /* Allocate an Ethernet device and register it */
1128         if (!(dev = alloc_etherdev(sizeof(wlan_private)))) {
1129                 lbs_pr_err("init ethX device failed\n");
1130                 return NULL;
1131         }
1132         priv = dev->priv;
1133
1134         /* allocate buffer for wlan_adapter */
1135         if (!(priv->adapter = kzalloc(sizeof(wlan_adapter), GFP_KERNEL))) {
1136                 lbs_pr_err("allocate buffer for wlan_adapter failed\n");
1137                 goto err_kzalloc;
1138         }
1139
1140         priv->dev = dev;
1141         priv->card = card;
1142         priv->mesh_open = 0;
1143         priv->infra_open = 0;
1144
1145         SET_MODULE_OWNER(dev);
1146
1147         /* Setup the OS Interface to our functions */
1148         dev->open = libertas_open;
1149         dev->hard_start_xmit = libertas_pre_start_xmit;
1150         dev->stop = libertas_close;
1151         dev->set_mac_address = libertas_set_mac_address;
1152         dev->tx_timeout = libertas_tx_timeout;
1153         dev->get_stats = libertas_get_stats;
1154         dev->watchdog_timeo = 5 * HZ;
1155         dev->ethtool_ops = &libertas_ethtool_ops;
1156 #ifdef  WIRELESS_EXT
1157         dev->wireless_handlers = (struct iw_handler_def *)&libertas_handler_def;
1158 #endif
1159 #define NETIF_F_DYNALLOC 16
1160         dev->features |= NETIF_F_DYNALLOC;
1161         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1162         dev->set_multicast_list = libertas_set_multicast_list;
1163
1164         SET_NETDEV_DEV(dev, dmdev);
1165
1166         INIT_LIST_HEAD(&priv->adapter->cmdfreeq);
1167         INIT_LIST_HEAD(&priv->adapter->cmdpendingq);
1168
1169         spin_lock_init(&priv->adapter->driver_lock);
1170         init_waitqueue_head(&priv->adapter->cmd_pending);
1171         priv->adapter->nr_cmd_pending = 0;
1172         goto done;
1173
1174 err_kzalloc:
1175         free_netdev(dev);
1176         priv = NULL;
1177 done:
1178         lbs_deb_leave_args(LBS_DEB_NET, "priv %p", priv);
1179         return priv;
1180 }
1181 EXPORT_SYMBOL_GPL(libertas_add_card);
1182
1183 int libertas_activate_card(wlan_private *priv)
1184 {
1185         struct net_device *dev = priv->dev;
1186         int ret = -1;
1187
1188         lbs_deb_enter(LBS_DEB_MAIN);
1189
1190         lbs_deb_thread("Starting main thread...\n");
1191         init_waitqueue_head(&priv->waitq);
1192         priv->main_thread = kthread_run(libertas_thread, dev, "libertas_main");
1193         if (IS_ERR(priv->main_thread)) {
1194                 lbs_deb_thread("Error creating main thread.\n");
1195                 goto done;
1196         }
1197
1198         priv->assoc_thread =
1199                 create_singlethread_workqueue("libertas_assoc");
1200         INIT_DELAYED_WORK(&priv->assoc_work, libertas_association_worker);
1201         INIT_WORK(&priv->sync_channel, libertas_sync_channel);
1202
1203         /*
1204          * Register the device. Fillup the private data structure with
1205          * relevant information from the card and request for the required
1206          * IRQ.
1207          */
1208         if (priv->hw_register_dev(priv) < 0) {
1209                 lbs_pr_err("failed to register WLAN device\n");
1210                 goto err_registerdev;
1211         }
1212
1213         /* init FW and HW */
1214         if (libertas_init_fw(priv)) {
1215                 lbs_pr_err("firmware init failed\n");
1216                 goto err_registerdev;
1217         }
1218
1219         if (register_netdev(dev)) {
1220                 lbs_pr_err("cannot register ethX device\n");
1221                 goto err_init_fw;
1222         }
1223
1224         lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
1225
1226         libertas_debugfs_init_one(priv, dev);
1227
1228         ret = 0;
1229         goto done;
1230
1231 err_init_fw:
1232         priv->hw_unregister_dev(priv);
1233 err_registerdev:
1234         destroy_workqueue(priv->assoc_thread);
1235         /* Stop the thread servicing the interrupts */
1236         wake_up_interruptible(&priv->waitq);
1237         kthread_stop(priv->main_thread);
1238 done:
1239         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
1240         return ret;
1241 }
1242 EXPORT_SYMBOL_GPL(libertas_activate_card);
1243
1244
1245 /**
1246  * @brief This function adds mshX interface
1247  *
1248  *  @param priv    A pointer to the wlan_private structure
1249  *  @return        0 if successful, -X otherwise
1250  */
1251 int libertas_add_mesh(wlan_private *priv, struct device *dev)
1252 {
1253         struct net_device *mesh_dev = NULL;
1254         int ret = 0;
1255
1256         lbs_deb_enter(LBS_DEB_MESH);
1257
1258         /* Allocate a virtual mesh device */
1259         if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
1260                 lbs_deb_mesh("init mshX device failed\n");
1261                 ret = -ENOMEM;
1262                 goto done;
1263         }
1264         mesh_dev->priv = priv;
1265         priv->mesh_dev = mesh_dev;
1266
1267         SET_MODULE_OWNER(mesh_dev);
1268
1269         mesh_dev->open = libertas_mesh_open;
1270         mesh_dev->hard_start_xmit = libertas_mesh_pre_start_xmit;
1271         mesh_dev->stop = libertas_mesh_close;
1272         mesh_dev->get_stats = libertas_get_stats;
1273         mesh_dev->set_mac_address = libertas_set_mac_address;
1274         mesh_dev->ethtool_ops = &libertas_ethtool_ops;
1275         memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
1276                         sizeof(priv->dev->dev_addr));
1277
1278         SET_NETDEV_DEV(priv->mesh_dev, dev);
1279
1280 #ifdef  WIRELESS_EXT
1281         mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
1282 #endif
1283 #define NETIF_F_DYNALLOC 16
1284
1285         /* Register virtual mesh interface */
1286         ret = register_netdev(mesh_dev);
1287         if (ret) {
1288                 lbs_pr_err("cannot register mshX virtual interface\n");
1289                 goto err_free;
1290         }
1291
1292         ret = sysfs_create_group(&(mesh_dev->dev.kobj), &libertas_mesh_attr_group);
1293         if (ret)
1294                 goto err_unregister;
1295
1296         /* Everything successful */
1297         ret = 0;
1298         goto done;
1299
1300 err_unregister:
1301         unregister_netdev(mesh_dev);
1302
1303 err_free:
1304         free_netdev(mesh_dev);
1305
1306 done:
1307         lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1308         return ret;
1309 }
1310 EXPORT_SYMBOL_GPL(libertas_add_mesh);
1311
1312 static void wake_pending_cmdnodes(wlan_private *priv)
1313 {
1314         struct cmd_ctrl_node *cmdnode;
1315         unsigned long flags;
1316
1317         lbs_deb_enter(LBS_DEB_HOST);
1318
1319         spin_lock_irqsave(&priv->adapter->driver_lock, flags);
1320         list_for_each_entry(cmdnode, &priv->adapter->cmdpendingq, list) {
1321                 cmdnode->cmdwaitqwoken = 1;
1322                 wake_up_interruptible(&cmdnode->cmdwait_q);
1323         }
1324         spin_unlock_irqrestore(&priv->adapter->driver_lock, flags);
1325 }
1326
1327
1328 int libertas_remove_card(wlan_private *priv)
1329 {
1330         wlan_adapter *adapter;
1331         struct net_device *dev;
1332         union iwreq_data wrqu;
1333
1334         lbs_deb_enter(LBS_DEB_NET);
1335
1336         if (!priv)
1337                 goto out;
1338
1339         adapter = priv->adapter;
1340
1341         if (!adapter)
1342                 goto out;
1343
1344         dev = priv->dev;
1345
1346         netif_stop_queue(priv->dev);
1347         netif_carrier_off(priv->dev);
1348
1349         wake_pending_cmdnodes(priv);
1350
1351         unregister_netdev(dev);
1352
1353         cancel_delayed_work(&priv->assoc_work);
1354         destroy_workqueue(priv->assoc_thread);
1355
1356         if (adapter->psmode == WLAN802_11POWERMODEMAX_PSP) {
1357                 adapter->psmode = WLAN802_11POWERMODECAM;
1358                 libertas_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1359         }
1360
1361         memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1362         wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1363         wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1364
1365         adapter->surpriseremoved = 1;
1366
1367         /* Stop the thread servicing the interrupts */
1368         kthread_stop(priv->main_thread);
1369
1370         libertas_debugfs_remove_one(priv);
1371
1372         lbs_deb_net("free adapter\n");
1373         libertas_free_adapter(priv);
1374
1375         lbs_deb_net("unregister finish\n");
1376
1377         priv->dev = NULL;
1378         free_netdev(dev);
1379
1380 out:
1381         lbs_deb_leave(LBS_DEB_NET);
1382         return 0;
1383 }
1384 EXPORT_SYMBOL_GPL(libertas_remove_card);
1385
1386
1387 void libertas_remove_mesh(wlan_private *priv)
1388 {
1389         struct net_device *mesh_dev;
1390
1391         lbs_deb_enter(LBS_DEB_NET);
1392
1393         if (!priv)
1394                 goto out;
1395
1396         mesh_dev = priv->mesh_dev;
1397
1398         netif_stop_queue(mesh_dev);
1399         netif_carrier_off(priv->mesh_dev);
1400
1401         sysfs_remove_group(&(mesh_dev->dev.kobj), &libertas_mesh_attr_group);
1402         unregister_netdev(mesh_dev);
1403
1404         priv->mesh_dev = NULL ;
1405         free_netdev(mesh_dev);
1406
1407 out:
1408         lbs_deb_leave(LBS_DEB_NET);
1409 }
1410 EXPORT_SYMBOL_GPL(libertas_remove_mesh);
1411
1412 /**
1413  *  @brief This function finds the CFP in
1414  *  region_cfp_table based on region and band parameter.
1415  *
1416  *  @param region  The region code
1417  *  @param band    The band
1418  *  @param cfp_no  A pointer to CFP number
1419  *  @return        A pointer to CFP
1420  */
1421 struct chan_freq_power *libertas_get_region_cfp_table(u8 region, u8 band, int *cfp_no)
1422 {
1423         int i, end;
1424
1425         lbs_deb_enter(LBS_DEB_MAIN);
1426
1427         end = sizeof(region_cfp_table)/sizeof(struct region_cfp_table);
1428
1429         for (i = 0; i < end ; i++) {
1430                 lbs_deb_main("region_cfp_table[i].region=%d\n",
1431                         region_cfp_table[i].region);
1432                 if (region_cfp_table[i].region == region) {
1433                         *cfp_no = region_cfp_table[i].cfp_no_BG;
1434                         lbs_deb_leave(LBS_DEB_MAIN);
1435                         return region_cfp_table[i].cfp_BG;
1436                 }
1437         }
1438
1439         lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1440         return NULL;
1441 }
1442
1443 int libertas_set_regiontable(wlan_private * priv, u8 region, u8 band)
1444 {
1445         wlan_adapter *adapter = priv->adapter;
1446         int ret = 0;
1447         int i = 0;
1448
1449         struct chan_freq_power *cfp;
1450         int cfp_no;
1451
1452         lbs_deb_enter(LBS_DEB_MAIN);
1453
1454         memset(adapter->region_channel, 0, sizeof(adapter->region_channel));
1455
1456         {
1457                 cfp = libertas_get_region_cfp_table(region, band, &cfp_no);
1458                 if (cfp != NULL) {
1459                         adapter->region_channel[i].nrcfp = cfp_no;
1460                         adapter->region_channel[i].CFP = cfp;
1461                 } else {
1462                         lbs_deb_main("wrong region code %#x in band B/G\n",
1463                                region);
1464                         ret = -1;
1465                         goto out;
1466                 }
1467                 adapter->region_channel[i].valid = 1;
1468                 adapter->region_channel[i].region = region;
1469                 adapter->region_channel[i].band = band;
1470                 i++;
1471         }
1472 out:
1473         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1474         return ret;
1475 }
1476
1477 /**
1478  *  @brief This function handles the interrupt. it will change PS
1479  *  state if applicable. it will wake up main_thread to handle
1480  *  the interrupt event as well.
1481  *
1482  *  @param dev     A pointer to net_device structure
1483  *  @return        n/a
1484  */
1485 void libertas_interrupt(struct net_device *dev)
1486 {
1487         wlan_private *priv = dev->priv;
1488
1489         lbs_deb_enter(LBS_DEB_THREAD);
1490
1491         lbs_deb_thread("libertas_interrupt: intcounter=%d\n",
1492                priv->adapter->intcounter);
1493
1494         priv->adapter->intcounter++;
1495
1496         if (priv->adapter->psstate == PS_STATE_SLEEP) {
1497                 priv->adapter->psstate = PS_STATE_AWAKE;
1498                 netif_wake_queue(dev);
1499                 if (priv->mesh_dev)
1500                         netif_wake_queue(priv->mesh_dev);
1501         }
1502
1503         wake_up_interruptible(&priv->waitq);
1504
1505         lbs_deb_leave(LBS_DEB_THREAD);
1506 }
1507 EXPORT_SYMBOL_GPL(libertas_interrupt);
1508
1509 int libertas_reset_device(wlan_private *priv)
1510 {
1511         int ret;
1512
1513         lbs_deb_enter(LBS_DEB_MAIN);
1514         ret = libertas_prepare_and_send_command(priv, CMD_802_11_RESET,
1515                                     CMD_ACT_HALT, 0, 0, NULL);
1516         msleep_interruptible(10);
1517
1518         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1519         return ret;
1520 }
1521 EXPORT_SYMBOL_GPL(libertas_reset_device);
1522
1523 static int libertas_init_module(void)
1524 {
1525         lbs_deb_enter(LBS_DEB_MAIN);
1526         libertas_debugfs_init();
1527         lbs_deb_leave(LBS_DEB_MAIN);
1528         return 0;
1529 }
1530
1531 static void libertas_exit_module(void)
1532 {
1533         lbs_deb_enter(LBS_DEB_MAIN);
1534
1535         libertas_debugfs_remove();
1536
1537         lbs_deb_leave(LBS_DEB_MAIN);
1538 }
1539
1540 module_init(libertas_init_module);
1541 module_exit(libertas_exit_module);
1542
1543 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1544 MODULE_AUTHOR("Marvell International Ltd.");
1545 MODULE_LICENSE("GPL");