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/delay.h>
   8 #include <linux/freezer.h>
   9 #include <linux/etherdevice.h>
  10 #include <linux/netdevice.h>
  11 #include <linux/if_arp.h>
  12
  13 #include <net/iw_handler.h>
  14
  15 #include "host.h"
  16 #include "sbi.h"
  17 #include "decl.h"
  18 #include "dev.h"
  19 #include "fw.h"
  20 #include "wext.h"
  21 #include "debugfs.h"
  22 #include "assoc.h"
  23
  24 #define DRIVER_RELEASE_VERSION "320.p0"
  25 const char libertas_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
  26 #ifdef  DEBUG
  27     "-dbg"
  28 #endif
  29     "";
  30
  31 #ifdef ENABLE_PM
  32 static struct pm_dev *wlan_pm_dev = NULL;
  33 #endif
  34
  35 #define WLAN_TX_PWR_DEFAULT             20      /*100mW */
  36 #define WLAN_TX_PWR_US_DEFAULT          20      /*100mW */
  37 #define WLAN_TX_PWR_JP_DEFAULT          16      /*50mW */
  38 #define WLAN_TX_PWR_FR_DEFAULT          20      /*100mW */
  39 #define WLAN_TX_PWR_EMEA_DEFAULT        20      /*100mW */
  40
  41 /* Format { channel, frequency (MHz), maxtxpower } */
  42 /* band: 'B/G', region: USA FCC/Canada IC */
  43 static struct chan_freq_power channel_freq_power_US_BG[] = {
  44         {1, 2412, WLAN_TX_PWR_US_DEFAULT},
  45         {2, 2417, WLAN_TX_PWR_US_DEFAULT},
  46         {3, 2422, WLAN_TX_PWR_US_DEFAULT},
  47         {4, 2427, WLAN_TX_PWR_US_DEFAULT},
  48         {5, 2432, WLAN_TX_PWR_US_DEFAULT},
  49         {6, 2437, WLAN_TX_PWR_US_DEFAULT},
  50         {7, 2442, WLAN_TX_PWR_US_DEFAULT},
  51         {8, 2447, WLAN_TX_PWR_US_DEFAULT},
  52         {9, 2452, WLAN_TX_PWR_US_DEFAULT},
  53         {10, 2457, WLAN_TX_PWR_US_DEFAULT},
  54         {11, 2462, WLAN_TX_PWR_US_DEFAULT}
  55 };
  56
  57 /* band: 'B/G', region: Europe ETSI */
  58 static struct chan_freq_power channel_freq_power_EU_BG[] = {
  59         {1, 2412, WLAN_TX_PWR_EMEA_DEFAULT},
  60         {2, 2417, WLAN_TX_PWR_EMEA_DEFAULT},
  61         {3, 2422, WLAN_TX_PWR_EMEA_DEFAULT},
  62         {4, 2427, WLAN_TX_PWR_EMEA_DEFAULT},
  63         {5, 2432, WLAN_TX_PWR_EMEA_DEFAULT},
  64         {6, 2437, WLAN_TX_PWR_EMEA_DEFAULT},
  65         {7, 2442, WLAN_TX_PWR_EMEA_DEFAULT},
  66         {8, 2447, WLAN_TX_PWR_EMEA_DEFAULT},
  67         {9, 2452, WLAN_TX_PWR_EMEA_DEFAULT},
  68         {10, 2457, WLAN_TX_PWR_EMEA_DEFAULT},
  69         {11, 2462, WLAN_TX_PWR_EMEA_DEFAULT},
  70         {12, 2467, WLAN_TX_PWR_EMEA_DEFAULT},
  71         {13, 2472, WLAN_TX_PWR_EMEA_DEFAULT}
  72 };
  73
  74 /* band: 'B/G', region: Spain */
  75 static struct chan_freq_power channel_freq_power_SPN_BG[] = {
  76         {10, 2457, WLAN_TX_PWR_DEFAULT},
  77         {11, 2462, WLAN_TX_PWR_DEFAULT}
  78 };
  79
  80 /* band: 'B/G', region: France */
  81 static struct chan_freq_power channel_freq_power_FR_BG[] = {
  82         {10, 2457, WLAN_TX_PWR_FR_DEFAULT},
  83         {11, 2462, WLAN_TX_PWR_FR_DEFAULT},
  84         {12, 2467, WLAN_TX_PWR_FR_DEFAULT},
  85         {13, 2472, WLAN_TX_PWR_FR_DEFAULT}
  86 };
  87
  88 /* band: 'B/G', region: Japan */
  89 static struct chan_freq_power channel_freq_power_JPN_BG[] = {
  90         {1, 2412, WLAN_TX_PWR_JP_DEFAULT},
  91         {2, 2417, WLAN_TX_PWR_JP_DEFAULT},
  92         {3, 2422, WLAN_TX_PWR_JP_DEFAULT},
  93         {4, 2427, WLAN_TX_PWR_JP_DEFAULT},
  94         {5, 2432, WLAN_TX_PWR_JP_DEFAULT},
  95         {6, 2437, WLAN_TX_PWR_JP_DEFAULT},
  96         {7, 2442, WLAN_TX_PWR_JP_DEFAULT},
  97         {8, 2447, WLAN_TX_PWR_JP_DEFAULT},
  98         {9, 2452, WLAN_TX_PWR_JP_DEFAULT},
  99         {10, 2457, WLAN_TX_PWR_JP_DEFAULT},
 100         {11, 2462, WLAN_TX_PWR_JP_DEFAULT},
 101         {12, 2467, WLAN_TX_PWR_JP_DEFAULT},
 102         {13, 2472, WLAN_TX_PWR_JP_DEFAULT},
 103         {14, 2484, WLAN_TX_PWR_JP_DEFAULT}
 104 };
 105
 106 /**
 107  * the structure for channel, frequency and power
 108  */
 109 struct region_cfp_table {
 110         u8 region;
 111         struct chan_freq_power *cfp_BG;
 112         int cfp_no_BG;
 113 };
 114
 115 /**
 116  * the structure for the mapping between region and CFP
 117  */
 118 static struct region_cfp_table region_cfp_table[] = {
 119         {0x10,                  /*US FCC */
 120          channel_freq_power_US_BG,
 121          sizeof(channel_freq_power_US_BG) / sizeof(struct chan_freq_power),
 122          }
 123         ,
 124         {0x20,                  /*CANADA IC */
 125          channel_freq_power_US_BG,
 126          sizeof(channel_freq_power_US_BG) / sizeof(struct chan_freq_power),
 127          }
 128         ,
 129         {0x30, /*EU*/ channel_freq_power_EU_BG,
 130          sizeof(channel_freq_power_EU_BG) / sizeof(struct chan_freq_power),
 131          }
 132         ,
 133         {0x31, /*SPAIN*/ channel_freq_power_SPN_BG,
 134          sizeof(channel_freq_power_SPN_BG) / sizeof(struct chan_freq_power),
 135          }
 136         ,
 137         {0x32, /*FRANCE*/ channel_freq_power_FR_BG,
 138          sizeof(channel_freq_power_FR_BG) / sizeof(struct chan_freq_power),
 139          }
 140         ,
 141         {0x40, /*JAPAN*/ channel_freq_power_JPN_BG,
 142          sizeof(channel_freq_power_JPN_BG) / sizeof(struct chan_freq_power),
 143          }
 144         ,
 145 /*Add new region here */
 146 };
 147
 148 /**
 149  * the rates supported by the card
 150  */
 151 u8 libertas_wlan_data_rates[WLAN_SUPPORTED_RATES] =
 152     { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,
 153         0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00
 154 };
 155
 156 /**
 157  * the rates supported
 158  */
 159 u8 libertas_supported_rates[G_SUPPORTED_RATES] =
 160     { 0x82, 0x84, 0x8b, 0x96, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
 161 0 };
 162
 163 /**
 164  * the rates supported for ad-hoc G mode
 165  */
 166 u8 libertas_adhoc_rates_g[G_SUPPORTED_RATES] =
 167     { 0x82, 0x84, 0x8b, 0x96, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
 168 0 };
 169
 170 /**
 171  * the rates supported for ad-hoc B mode
 172  */
 173 u8 libertas_adhoc_rates_b[4] = { 0x82, 0x84, 0x8b, 0x96 };
 174
 175 /**
 176  * the global variable of a pointer to wlan_private
 177  * structure variable
 178  */
 179 static wlan_private *wlanpriv = NULL;
 180
 181 #define MAX_DEVS 5
 182 static struct net_device *libertas_devs[MAX_DEVS];
 183 static int libertas_found = 0;
 184
 185 /**
 186  * the table to keep region code
 187  */
 188 u16 libertas_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
 189     { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
 190
 191 static u8 *default_fw_name = "usb8388.bin";
 192
 193 /**
 194  * Attributes exported through sysfs
 195  */
 196
 197 /**
 198  * @brief Get function for sysfs attribute libertas_mpp
 199  */
 200 static ssize_t libertas_mpp_get(struct device * dev,
 201                 struct device_attribute *attr, char * buf) {
 202         struct cmd_ds_mesh_access mesh_access;
 203
 204         memset(&mesh_access, 0, sizeof(mesh_access));
 205         libertas_prepare_and_send_command(to_net_dev(dev)->priv,
 206                         cmd_mesh_access,
 207                         cmd_act_mesh_get_mpp,
 208                         cmd_option_waitforrsp, 0, (void *)&mesh_access);
 209
 210         return snprintf(buf, 3, "%d\n", mesh_access.data[0]);
 211 }
 212
 213 /**
 214  * @brief Set function for sysfs attribute libertas_mpp
 215  */
 216 static ssize_t libertas_mpp_set(struct device * dev,
 217                 struct device_attribute *attr, const char * buf, size_t count) {
 218         struct cmd_ds_mesh_access mesh_access;
 219
 220
 221         memset(&mesh_access, 0, sizeof(mesh_access));
 222         sscanf(buf, "%d", &(mesh_access.data[0]));
 223         libertas_prepare_and_send_command((to_net_dev(dev))->priv,
 224                         cmd_mesh_access,
 225                         cmd_act_mesh_set_mpp,
 226                         cmd_option_waitforrsp, 0, (void *)&mesh_access);
 227         return strlen(buf);
 228 }
 229
 230 /**
 231  * libertas_mpp attribute to be exported per mshX interface
 232  * through sysfs (/sys/class/net/mshX/libertas-mpp)
 233  */
 234 static DEVICE_ATTR(libertas_mpp, 0644, libertas_mpp_get,
 235                 libertas_mpp_set );
 236
 237 /**
 238  *  @brief Check if the device can be open and wait if necessary.
 239  *
 240  *  @param dev     A pointer to net_device structure
 241  *  @return        0
 242  *
 243  * For USB adapter, on some systems the device open handler will be
 244  * called before FW ready. Use the following flag check and wait
 245  * function to work around the issue.
 246  *
 247  */
 248 static int pre_open_check(struct net_device *dev) {
 249         wlan_private *priv = (wlan_private *) dev->priv;
 250         wlan_adapter *adapter = priv->adapter;
 251         int i = 0;
 252
 253         while (!adapter->fw_ready && i < 20) {
 254                 i++;
 255                 msleep_interruptible(100);
 256         }
 257         if (!adapter->fw_ready) {
 258                 lbs_pr_info("FW not ready, pre_open_check() return failure\n");
 259                 LEAVE();
 260                 return -1;
 261         }
 262
 263         return 0;
 264 }
 265
 266 /**
 267  *  @brief This function opens the device
 268  *
 269  *  @param dev     A pointer to net_device structure
 270  *  @return        0
 271  */
 272 static int wlan_dev_open(struct net_device *dev)
 273 {
 274         wlan_private *priv = (wlan_private *) dev->priv;
 275         wlan_adapter *adapter = priv->adapter;
 276
 277         ENTER();
 278
 279
 280         priv->open = 1;
 281
 282         if (adapter->connect_status == libertas_connected) {
 283                 netif_carrier_on(priv->wlan_dev.netdev);
 284         } else
 285                 netif_carrier_off(priv->wlan_dev.netdev);
 286
 287         LEAVE();
 288         return 0;
 289 }
 290 /**
 291  *  @brief This function opens the mshX interface
 292  *
 293  *  @param dev     A pointer to net_device structure
 294  *  @return        0
 295  */
 296 static int mesh_open(struct net_device *dev)
 297 {
 298         wlan_private *priv = (wlan_private *) dev->priv ;
 299
 300         if(pre_open_check(dev) == -1)
 301                 return -1;
 302         priv->mesh_open = 1 ;
 303         netif_start_queue(priv->mesh_dev);
 304         if (priv->infra_open == 0)
 305                 return wlan_dev_open(priv->wlan_dev.netdev) ;
 306         return 0;
 307 }
 308
 309 /**
 310  *  @brief This function opens the ethX interface
 311  *
 312  *  @param dev     A pointer to net_device structure
 313  *  @return        0
 314  */
 315 static int wlan_open(struct net_device *dev)
 316 {
 317         wlan_private *priv = (wlan_private *) dev->priv ;
 318
 319         if(pre_open_check(dev) == -1)
 320                 return -1;
 321         priv->infra_open = 1 ;
 322         netif_wake_queue(priv->wlan_dev.netdev);
 323         if (priv->open == 0)
 324                 return wlan_dev_open(priv->wlan_dev.netdev) ;
 325         return 0;
 326 }
 327
 328 static int wlan_dev_close(struct net_device *dev)
 329 {
 330         wlan_private *priv = dev->priv;
 331
 332         ENTER();
 333
 334         netif_carrier_off(priv->wlan_dev.netdev);
 335         priv->open = 0;
 336
 337         LEAVE();
 338         return 0;
 339 }
 340
 341 /**
 342  *  @brief This function closes the mshX interface
 343  *
 344  *  @param dev     A pointer to net_device structure
 345  *  @return        0
 346  */
 347 static int mesh_close(struct net_device *dev)
 348 {
 349         wlan_private *priv = (wlan_private *) (dev->priv);
 350
 351         priv->mesh_open = 0;
 352         netif_stop_queue(priv->mesh_dev);
 353         if (priv->infra_open == 0)
 354                 return wlan_dev_close( ((wlan_private *) dev->priv)->wlan_dev.netdev) ;
 355         else
 356                 return 0;
 357 }
 358
 359 /**
 360  *  @brief This function closes the ethX interface
 361  *
 362  *  @param dev     A pointer to net_device structure
 363  *  @return        0
 364  */
 365 static int wlan_close(struct net_device *dev) {
 366         wlan_private *priv = (wlan_private *) dev->priv;
 367
 368         netif_stop_queue(priv->wlan_dev.netdev);
 369         priv->infra_open = 0;
 370         if (priv->mesh_open == 0)
 371                 return wlan_dev_close( ((wlan_private *) dev->priv)->wlan_dev.netdev) ;
 372         else
 373                 return 0;
 374 }
 375
 376
 377 #ifdef ENABLE_PM
 378
 379 /**
 380  *  @brief This function is a callback function. it is called by
 381  *  kernel to enter or exit power saving mode.
 382  *
 383  *  @param pmdev   A pointer to pm_dev
 384  *  @param pmreq   pm_request_t
 385  *  @param pmdata  A pointer to pmdata
 386  *  @return        0 or -1
 387  */
 388 static int wlan_pm_callback(struct pm_dev *pmdev, pm_request_t pmreq,
 389                             void *pmdata)
 390 {
 391         wlan_private *priv = wlanpriv;
 392         wlan_adapter *adapter = priv->adapter;
 393         struct net_device *dev = priv->wlan_dev.netdev;
 394
 395         lbs_pr_debug(1, "WPRM_PM_CALLBACK: pmreq = %d.\n", pmreq);
 396
 397         switch (pmreq) {
 398         case PM_SUSPEND:
 399                 lbs_pr_debug(1, "WPRM_PM_CALLBACK: enter PM_SUSPEND.\n");
 400
 401                 /* in associated mode */
 402                 if (adapter->connect_status == libertas_connected) {
 403                         if ((adapter->psstate != PS_STATE_SLEEP)
 404                             ) {
 405                                 lbs_pr_debug(1,
 406                                        "wlan_pm_callback: can't enter sleep mode\n");
 407                                 return -1;
 408                         } else {
 409
 410                                 /*
 411                                  * Detach the network interface
 412                                  * if the network is running
 413                                  */
 414                                 if (netif_running(dev)) {
 415                                         netif_device_detach(dev);
 416                                         lbs_pr_debug(1,
 417                                                "netif_device_detach().\n");
 418                                 }
 419                                 libertas_sbi_suspend(priv);
 420                         }
 421                         break;
 422                 }
 423
 424                 /* in non associated mode */
 425
 426                 /*
 427                  * Detach the network interface
 428                  * if the network is running
 429                  */
 430                 if (netif_running(dev))
 431                         netif_device_detach(dev);
 432
 433                 /*
 434                  * Storing and restoring of the regs be taken care
 435                  * at the driver rest will be done at wlan driver
 436                  * this makes driver independent of the card
 437                  */
 438
 439                 libertas_sbi_suspend(priv);
 440
 441                 break;
 442
 443         case PM_RESUME:
 444                 /* in associated mode */
 445                 if (adapter->connect_status == libertas_connected) {
 446                         {
 447                                 /*
 448                                  * Bring the inteface up first
 449                                  * This case should not happen still ...
 450                                  */
 451                                 libertas_sbi_resume(priv);
 452
 453                                 /*
 454                                  * Attach the network interface
 455                                  * if the network is running
 456                                  */
 457                                 if (netif_running(dev)) {
 458                                         netif_device_attach(dev);
 459                                         lbs_pr_debug(1,
 460                                                "after netif_device_attach().\n");
 461                                 }
 462                                 lbs_pr_debug(1,
 463                                        "After netif attach, in associated mode.\n");
 464                         }
 465                         break;
 466                 }
 467
 468                 /* in non associated mode */
 469
 470                 /*
 471                  * Bring the inteface up first
 472                  * This case should not happen still ...
 473                  */
 474
 475                 libertas_sbi_resume(priv);
 476
 477                 if (netif_running(dev))
 478                         netif_device_attach(dev);
 479
 480                 lbs_pr_debug(1, "after netif attach, in NON associated mode.\n");
 481                 break;
 482         }
 483
 484         return 0;
 485 }
 486 #endif                          /* ENABLE_PM */
 487
 488 static int wlan_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 489 {
 490         int ret = 0;
 491         wlan_private *priv = dev->priv;
 492
 493         ENTER();
 494
 495         if (priv->wlan_dev.dnld_sent || priv->adapter->TxLockFlag) {
 496                 priv->stats.tx_dropped++;
 497                 goto done;
 498         }
 499
 500         netif_stop_queue(priv->wlan_dev.netdev);
 501
 502         if (libertas_process_tx(priv, skb) == 0)
 503                 dev->trans_start = jiffies;
 504 done:
 505         LEAVE();
 506         return ret;
 507 }
 508
 509 /**
 510  * @brief Mark mesh packets and handover them to wlan_hard_start_xmit
 511  *
 512  */
 513 static int mesh_pre_start_xmit(struct sk_buff *skb, struct net_device *dev)
 514 {
 515         wlan_private *priv = dev->priv;
 516         ENTER();
 517         SET_MESH_FRAME(skb);
 518         LEAVE();
 519
 520         return wlan_hard_start_xmit(skb, priv->wlan_dev.netdev);
 521 }
 522
 523 /**
 524  * @brief Mark non-mesh packets and handover them to wlan_hard_start_xmit
 525  *
 526  */
 527 static int wlan_pre_start_xmit(struct sk_buff *skb, struct net_device *dev) {
 528         ENTER();
 529         UNSET_MESH_FRAME(skb);
 530         LEAVE();
 531         return wlan_hard_start_xmit(skb, dev);
 532 }
 533
 534 static void wlan_tx_timeout(struct net_device *dev)
 535 {
 536         wlan_private *priv = (wlan_private *) dev->priv;
 537
 538         ENTER();
 539
 540         lbs_pr_err("tx watch dog timeout!\n");
 541
 542         priv->wlan_dev.dnld_sent = DNLD_RES_RECEIVED;
 543         dev->trans_start = jiffies;
 544
 545         if (priv->adapter->currenttxskb) {
 546                 if (priv->adapter->radiomode == WLAN_RADIOMODE_RADIOTAP) {
 547                         /* If we are here, we have not received feedback from
 548                            the previous packet.  Assume TX_FAIL and move on. */
 549                         priv->adapter->eventcause = 0x01000000;
 550                         libertas_send_tx_feedback(priv);
 551                 } else
 552                         wake_up_interruptible(&priv->mainthread.waitq);
 553         } else if (priv->adapter->connect_status == libertas_connected)
 554                 netif_wake_queue(priv->wlan_dev.netdev);
 555
 556         LEAVE();
 557 }
 558
 559 /**
 560  *  @brief This function returns the network statistics
 561  *
 562  *  @param dev     A pointer to wlan_private structure
 563  *  @return        A pointer to net_device_stats structure
 564  */
 565 static struct net_device_stats *wlan_get_stats(struct net_device *dev)
 566 {
 567         wlan_private *priv = (wlan_private *) dev->priv;
 568
 569         return &priv->stats;
 570 }
 571
 572 static int wlan_set_mac_address(struct net_device *dev, void *addr)
 573 {
 574         int ret = 0;
 575         wlan_private *priv = (wlan_private *) dev->priv;
 576         wlan_adapter *adapter = priv->adapter;
 577         struct sockaddr *phwaddr = addr;
 578
 579         ENTER();
 580
 581         memset(adapter->current_addr, 0, ETH_ALEN);
 582
 583         /* dev->dev_addr is 8 bytes */
 584         lbs_dbg_hex("dev->dev_addr:", dev->dev_addr, ETH_ALEN);
 585
 586         lbs_dbg_hex("addr:", phwaddr->sa_data, ETH_ALEN);
 587         memcpy(adapter->current_addr, phwaddr->sa_data, ETH_ALEN);
 588
 589         ret = libertas_prepare_and_send_command(priv, cmd_802_11_mac_address,
 590                                     cmd_act_set,
 591                                     cmd_option_waitforrsp, 0, NULL);
 592
 593         if (ret) {
 594                 lbs_pr_debug(1, "set mac address failed.\n");
 595                 ret = -1;
 596                 goto done;
 597         }
 598
 599         lbs_dbg_hex("adapter->macaddr:", adapter->current_addr, ETH_ALEN);
 600         memcpy(dev->dev_addr, adapter->current_addr, ETH_ALEN);
 601         memcpy(((wlan_private *) dev->priv)->mesh_dev->dev_addr, adapter->current_addr, ETH_ALEN);
 602
 603 done:
 604         LEAVE();
 605         return ret;
 606 }
 607
 608 static int wlan_copy_multicast_address(wlan_adapter * adapter,
 609                                      struct net_device *dev)
 610 {
 611         int i = 0;
 612         struct dev_mc_list *mcptr = dev->mc_list;
 613
 614         for (i = 0; i < dev->mc_count; i++) {
 615                 memcpy(&adapter->multicastlist[i], mcptr->dmi_addr, ETH_ALEN);
 616                 mcptr = mcptr->next;
 617         }
 618
 619         return i;
 620
 621 }
 622
 623 static void wlan_set_multicast_list(struct net_device *dev)
 624 {
 625         wlan_private *priv = dev->priv;
 626         wlan_adapter *adapter = priv->adapter;
 627         int oldpacketfilter;
 628
 629         ENTER();
 630
 631         oldpacketfilter = adapter->currentpacketfilter;
 632
 633         if (dev->flags & IFF_PROMISC) {
 634                 lbs_pr_debug(1, "enable Promiscuous mode\n");
 635                 adapter->currentpacketfilter |=
 636                     cmd_act_mac_promiscuous_enable;
 637                 adapter->currentpacketfilter &=
 638                     ~(cmd_act_mac_all_multicast_enable |
 639                       cmd_act_mac_multicast_enable);
 640         } else {
 641                 /* Multicast */
 642                 adapter->currentpacketfilter &=
 643                     ~cmd_act_mac_promiscuous_enable;
 644
 645                 if (dev->flags & IFF_ALLMULTI || dev->mc_count >
 646                     MRVDRV_MAX_MULTICAST_LIST_SIZE) {
 647                         lbs_pr_debug(1, "Enabling All Multicast!\n");
 648                         adapter->currentpacketfilter |=
 649                             cmd_act_mac_all_multicast_enable;
 650                         adapter->currentpacketfilter &=
 651                             ~cmd_act_mac_multicast_enable;
 652                 } else {
 653                         adapter->currentpacketfilter &=
 654                             ~cmd_act_mac_all_multicast_enable;
 655
 656                         if (!dev->mc_count) {
 657                                 lbs_pr_debug(1, "No multicast addresses - "
 658                                        "disabling multicast!\n");
 659                                 adapter->currentpacketfilter &=
 660                                     ~cmd_act_mac_multicast_enable;
 661                         } else {
 662                                 int i;
 663
 664                                 adapter->currentpacketfilter |=
 665                                     cmd_act_mac_multicast_enable;
 666
 667                                 adapter->nr_of_multicastmacaddr =
 668                                     wlan_copy_multicast_address(adapter, dev);
 669
 670                                 lbs_pr_debug(1, "Multicast addresses: %d\n",
 671                                        dev->mc_count);
 672
 673                                 for (i = 0; i < dev->mc_count; i++) {
 674                                         lbs_pr_debug(1, "Multicast address %d:"
 675                                                "%x %x %x %x %x %x\n", i,
 676                                                adapter->multicastlist[i][0],
 677                                                adapter->multicastlist[i][1],
 678                                                adapter->multicastlist[i][2],
 679                                                adapter->multicastlist[i][3],
 680                                                adapter->multicastlist[i][4],
 681                                                adapter->multicastlist[i][5]);
 682                                 }
 683                                 /* set multicast addresses to firmware */
 684                                 libertas_prepare_and_send_command(priv,
 685                                                       cmd_mac_multicast_adr,
 686                                                       cmd_act_set, 0, 0,
 687                                                       NULL);
 688                         }
 689                 }
 690         }
 691
 692         if (adapter->currentpacketfilter != oldpacketfilter) {
 693                 libertas_set_mac_packet_filter(priv);
 694         }
 695
 696         LEAVE();
 697 }
 698
 699 /**
 700  *  @brief This function hanldes the major job in WLAN driver.
 701  *  it handles the event generated by firmware, rx data received
 702  *  from firmware and tx data sent from kernel.
 703  *
 704  *  @param data    A pointer to wlan_thread structure
 705  *  @return        0
 706  */
 707 static int wlan_service_main_thread(void *data)
 708 {
 709         struct wlan_thread *thread = data;
 710         wlan_private *priv = thread->priv;
 711         wlan_adapter *adapter = priv->adapter;
 712         wait_queue_t wait;
 713         u8 ireg = 0;
 714
 715         ENTER();
 716
 717         wlan_activate_thread(thread);
 718
 719         init_waitqueue_entry(&wait, current);
 720
 721         for (;;) {
 722                 lbs_pr_debug(1, "main-thread 111: intcounter=%d "
 723                        "currenttxskb=%p dnld_sent=%d\n",
 724                        adapter->intcounter,
 725                        adapter->currenttxskb, priv->wlan_dev.dnld_sent);
 726
 727                 add_wait_queue(&thread->waitq, &wait);
 728                 set_current_state(TASK_INTERRUPTIBLE);
 729                 spin_lock_irq(&adapter->driver_lock);
 730                 if ((adapter->psstate == PS_STATE_SLEEP) ||
 731                     (!adapter->intcounter
 732                      && (priv->wlan_dev.dnld_sent || adapter->cur_cmd ||
 733                          list_empty(&adapter->cmdpendingq)))) {
 734                         lbs_pr_debug(1,
 735                                "main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
 736                                adapter->connect_status, adapter->intcounter,
 737                                adapter->psmode, adapter->psstate);
 738                         spin_unlock_irq(&adapter->driver_lock);
 739                         schedule();
 740                 } else
 741                         spin_unlock_irq(&adapter->driver_lock);
 742
 743
 744                 lbs_pr_debug(1,
 745                        "main-thread 222 (waking up): intcounter=%d currenttxskb=%p "
 746                        "dnld_sent=%d\n", adapter->intcounter,
 747                        adapter->currenttxskb, priv->wlan_dev.dnld_sent);
 748
 749                 set_current_state(TASK_RUNNING);
 750                 remove_wait_queue(&thread->waitq, &wait);
 751                 try_to_freeze();
 752
 753                 lbs_pr_debug(1, "main-thread 333: intcounter=%d currenttxskb=%p "
 754                        "dnld_sent=%d\n",
 755                        adapter->intcounter,
 756                        adapter->currenttxskb, priv->wlan_dev.dnld_sent);
 757
 758                 if (kthread_should_stop()
 759                     || adapter->surpriseremoved) {
 760                         lbs_pr_debug(1,
 761                                "main-thread: break from main thread: surpriseremoved=0x%x\n",
 762                                adapter->surpriseremoved);
 763                         break;
 764                 }
 765
 766
 767                 spin_lock_irq(&adapter->driver_lock);
 768                 if (adapter->intcounter) {
 769                         u8 int_status;
 770                         adapter->intcounter = 0;
 771                         int_status = libertas_sbi_get_int_status(priv, &ireg);
 772
 773                         if (int_status) {
 774                                 lbs_pr_debug(1,
 775                                        "main-thread: reading HOST_INT_STATUS_REG failed\n");
 776                                 spin_unlock_irq(&adapter->driver_lock);
 777                                 continue;
 778                         }
 779                         adapter->hisregcpy |= ireg;
 780                 }
 781
 782                 lbs_pr_debug(1, "main-thread 444: intcounter=%d currenttxskb=%p "
 783                        "dnld_sent=%d\n",
 784                        adapter->intcounter,
 785                        adapter->currenttxskb, priv->wlan_dev.dnld_sent);
 786
 787                 /* command response? */
 788                 if (adapter->hisregcpy & his_cmdupldrdy) {
 789                         lbs_pr_debug(1, "main-thread: cmd response ready.\n");
 790
 791                         adapter->hisregcpy &= ~his_cmdupldrdy;
 792                         spin_unlock_irq(&adapter->driver_lock);
 793                         libertas_process_rx_command(priv);
 794                         spin_lock_irq(&adapter->driver_lock);
 795                 }
 796
 797                 /* Any Card Event */
 798                 if (adapter->hisregcpy & his_cardevent) {
 799                         lbs_pr_debug(1, "main-thread: Card Event Activity.\n");
 800
 801                         adapter->hisregcpy &= ~his_cardevent;
 802
 803                         if (libertas_sbi_read_event_cause(priv)) {
 804                                 lbs_pr_alert(
 805                                        "main-thread: libertas_sbi_read_event_cause failed.\n");
 806                                 spin_unlock_irq(&adapter->driver_lock);
 807                                 continue;
 808                         }
 809                         spin_unlock_irq(&adapter->driver_lock);
 810                         libertas_process_event(priv);
 811                 } else
 812                         spin_unlock_irq(&adapter->driver_lock);
 813
 814                 /* Check if we need to confirm Sleep Request received previously */
 815                 if (adapter->psstate == PS_STATE_PRE_SLEEP) {
 816                         if (!priv->wlan_dev.dnld_sent && !adapter->cur_cmd) {
 817                                 if (adapter->connect_status ==
 818                                     libertas_connected) {
 819                                         lbs_pr_debug(1,
 820                                                "main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p "
 821                                                "dnld_sent=%d cur_cmd=%p, confirm now\n",
 822                                                adapter->intcounter,
 823                                                adapter->currenttxskb,
 824                                                priv->wlan_dev.dnld_sent,
 825                                                adapter->cur_cmd);
 826
 827                                         libertas_ps_confirm_sleep(priv,
 828                                                        (u16) adapter->psmode);
 829                                 } else {
 830                                         /* workaround for firmware sending
 831                                          * deauth/linkloss event immediately
 832                                          * after sleep request, remove this
 833                                          * after firmware fixes it
 834                                          */
 835                                         adapter->psstate = PS_STATE_AWAKE;
 836                                         lbs_pr_alert(
 837                                                "main-thread: ignore PS_SleepConfirm in non-connected state\n");
 838                                 }
 839                         }
 840                 }
 841
 842                 /* The PS state is changed during processing of Sleep Request
 843                  * event above
 844                  */
 845                 if ((priv->adapter->psstate == PS_STATE_SLEEP) ||
 846                     (priv->adapter->psstate == PS_STATE_PRE_SLEEP))
 847                         continue;
 848
 849                 /* Execute the next command */
 850                 if (!priv->wlan_dev.dnld_sent && !priv->adapter->cur_cmd)
 851                         libertas_execute_next_command(priv);
 852
 853                 /* Wake-up command waiters which can't sleep in
 854                  * libertas_prepare_and_send_command
 855                  */
 856                 if (!adapter->nr_cmd_pending)
 857                         wake_up_all(&adapter->cmd_pending);
 858
 859                 libertas_tx_runqueue(priv);
 860         }
 861
 862         del_timer(&adapter->command_timer);
 863         adapter->nr_cmd_pending = 0;
 864         wake_up_all(&adapter->cmd_pending);
 865         wlan_deactivate_thread(thread);
 866
 867         LEAVE();
 868         return 0;
 869 }
 870
 871 /**
 872  * @brief This function adds the card. it will probe the
 873  * card, allocate the wlan_priv and initialize the device.
 874  *
 875  *  @param card    A pointer to card
 876  *  @return        A pointer to wlan_private structure
 877  */
 878 wlan_private *wlan_add_card(void *card)
 879 {
 880         struct net_device *dev = NULL;
 881         struct net_device *mesh_dev = NULL;
 882         wlan_private *priv = NULL;
 883
 884         ENTER();
 885
 886         /* Allocate an Ethernet device and register it */
 887         if (!(dev = alloc_etherdev(sizeof(wlan_private)))) {
 888                 lbs_pr_alert( "Init ethernet device failed!\n");
 889                 return NULL;
 890         }
 891
 892         priv = dev->priv;
 893
 894         /* allocate buffer for wlan_adapter */
 895         if (!(priv->adapter = kmalloc(sizeof(wlan_adapter), GFP_KERNEL))) {
 896                 lbs_pr_alert( "Allocate buffer for wlan_adapter failed!\n");
 897                 goto err_kmalloc;
 898         }
 899
 900         /* Allocate a virtual mesh device */
 901         if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
 902                 lbs_pr_debug(1, "Init ethernet device failed!\n");
 903                 return NULL;
 904         }
 905
 906         /* Both intervaces share the priv structure */
 907         mesh_dev->priv = priv;
 908
 909         /* init wlan_adapter */
 910         memset(priv->adapter, 0, sizeof(wlan_adapter));
 911
 912         priv->wlan_dev.netdev = dev;
 913         priv->wlan_dev.card = card;
 914         priv->mesh_open = 0;
 915         priv->infra_open = 0;
 916         priv->mesh_dev = mesh_dev;
 917         wlanpriv = priv;
 918
 919         SET_MODULE_OWNER(dev);
 920         SET_MODULE_OWNER(mesh_dev);
 921
 922         /* Setup the OS Interface to our functions */
 923         dev->open = wlan_open;
 924         dev->hard_start_xmit = wlan_pre_start_xmit;
 925         dev->stop = wlan_close;
 926         dev->do_ioctl = libertas_do_ioctl;
 927         dev->set_mac_address = wlan_set_mac_address;
 928         mesh_dev->open = mesh_open;
 929         mesh_dev->hard_start_xmit = mesh_pre_start_xmit;
 930         mesh_dev->stop = mesh_close;
 931         mesh_dev->do_ioctl = libertas_do_ioctl;
 932         memcpy(mesh_dev->dev_addr, wlanpriv->wlan_dev.netdev->dev_addr,
 933                         sizeof(wlanpriv->wlan_dev.netdev->dev_addr));
 934
 935 #define WLAN_WATCHDOG_TIMEOUT   (5 * HZ)
 936
 937         dev->tx_timeout = wlan_tx_timeout;
 938         dev->get_stats = wlan_get_stats;
 939         dev->watchdog_timeo = WLAN_WATCHDOG_TIMEOUT;
 940         dev->ethtool_ops = &libertas_ethtool_ops;
 941         mesh_dev->get_stats = wlan_get_stats;
 942         mesh_dev->ethtool_ops = &libertas_ethtool_ops;
 943
 944 #ifdef  WIRELESS_EXT
 945         dev->wireless_handlers = (struct iw_handler_def *)&libertas_handler_def;
 946         mesh_dev->wireless_handlers = (struct iw_handler_def *)&libertas_handler_def;
 947 #endif
 948 #define NETIF_F_DYNALLOC 16
 949         dev->features |= NETIF_F_DYNALLOC;
 950         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
 951         dev->set_multicast_list = wlan_set_multicast_list;
 952
 953         INIT_LIST_HEAD(&priv->adapter->cmdfreeq);
 954         INIT_LIST_HEAD(&priv->adapter->cmdpendingq);
 955
 956         spin_lock_init(&priv->adapter->driver_lock);
 957         init_waitqueue_head(&priv->adapter->cmd_pending);
 958         priv->adapter->nr_cmd_pending = 0;
 959
 960         lbs_pr_debug(1, "Starting kthread...\n");
 961         priv->mainthread.priv = priv;
 962         wlan_create_thread(wlan_service_main_thread,
 963                            &priv->mainthread, "wlan_main_service");
 964
 965         priv->assoc_thread =
 966                 create_singlethread_workqueue("libertas_assoc");
 967         INIT_DELAYED_WORK(&priv->assoc_work, wlan_association_worker);
 968
 969         /*
 970          * Register the device. Fillup the private data structure with
 971          * relevant information from the card and request for the required
 972          * IRQ.
 973          */
 974         if (libertas_sbi_register_dev(priv) < 0) {
 975                 lbs_pr_info("failed to register wlan device!\n");
 976                 goto err_registerdev;
 977         }
 978
 979         /* init FW and HW */
 980         if (libertas_init_fw(priv)) {
 981                 lbs_pr_debug(1, "Firmware Init failed\n");
 982                 goto err_registerdev;
 983         }
 984
 985         if (register_netdev(dev)) {
 986                 lbs_pr_err("Cannot register network device!\n");
 987                 goto err_init_fw;
 988         }
 989
 990         /* Register virtual mesh interface */
 991         if (register_netdev(mesh_dev)) {
 992                 lbs_pr_info("Cannot register mesh virtual interface!\n");
 993                 goto err_init_fw;
 994         }
 995
 996         lbs_pr_info("%s: Marvell Wlan 802.11 adapter ", dev->name);
 997
 998         libertas_debugfs_init_one(priv, dev);
 999
1000         if (libertas_found == MAX_DEVS)
1001                 goto err_init_fw;
1002         libertas_devs[libertas_found] = dev;
1003         libertas_found++;
1004 #ifdef ENABLE_PM
1005         if (!(wlan_pm_dev = pm_register(PM_UNKNOWN_DEV, 0, wlan_pm_callback)))
1006                 lbs_pr_alert( "failed to register PM callback\n");
1007 #endif
1008         if (device_create_file(&(mesh_dev->dev), &dev_attr_libertas_mpp))
1009                 goto err_create_file;
1010
1011         LEAVE();
1012         return priv;
1013
1014 err_create_file:
1015         device_remove_file(&(mesh_dev->dev), &dev_attr_libertas_mpp);
1016 err_init_fw:
1017         libertas_sbi_unregister_dev(priv);
1018 err_registerdev:
1019         destroy_workqueue(priv->assoc_thread);
1020         /* Stop the thread servicing the interrupts */
1021         wake_up_interruptible(&priv->mainthread.waitq);
1022         wlan_terminate_thread(&priv->mainthread);
1023         kfree(priv->adapter);
1024 err_kmalloc:
1025         free_netdev(dev);
1026         free_netdev(mesh_dev);
1027         wlanpriv = NULL;
1028
1029         LEAVE();
1030         return NULL;
1031 }
1032
1033 static void wake_pending_cmdnodes(wlan_private *priv)
1034 {
1035         struct cmd_ctrl_node *cmdnode;
1036         unsigned long flags;
1037
1038         spin_lock_irqsave(&priv->adapter->driver_lock, flags);
1039         list_for_each_entry(cmdnode, &priv->adapter->cmdpendingq, list) {
1040                 cmdnode->cmdwaitqwoken = 1;
1041                 wake_up_interruptible(&cmdnode->cmdwait_q);
1042         }
1043         spin_unlock_irqrestore(&priv->adapter->driver_lock, flags);
1044 }
1045
1046
1047 int wlan_remove_card(void *card)
1048 {
1049         wlan_private *priv = libertas_sbi_get_priv(card);
1050         wlan_adapter *adapter;
1051         struct net_device *dev;
1052         struct net_device *mesh_dev;
1053         union iwreq_data wrqu;
1054         int i;
1055
1056         ENTER();
1057
1058         if (!priv) {
1059                 LEAVE();
1060                 return 0;
1061         }
1062
1063         adapter = priv->adapter;
1064
1065         if (!adapter) {
1066                 LEAVE();
1067                 return 0;
1068         }
1069
1070         dev = priv->wlan_dev.netdev;
1071         mesh_dev = priv->mesh_dev;
1072
1073         netif_stop_queue(mesh_dev);
1074         netif_stop_queue(priv->wlan_dev.netdev);
1075         netif_carrier_off(priv->wlan_dev.netdev);
1076
1077         wake_pending_cmdnodes(priv);
1078
1079         device_remove_file(&(mesh_dev->dev), &dev_attr_libertas_mpp);
1080         unregister_netdev(mesh_dev);
1081         unregister_netdev(dev);
1082
1083         cancel_delayed_work(&priv->assoc_work);
1084         destroy_workqueue(priv->assoc_thread);
1085
1086         if (adapter->psmode == wlan802_11powermodemax_psp) {
1087                 adapter->psmode = wlan802_11powermodecam;
1088                 libertas_ps_wakeup(priv, cmd_option_waitforrsp);
1089         }
1090
1091         memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1092         wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1093         wireless_send_event(priv->wlan_dev.netdev, SIOCGIWAP, &wrqu, NULL);
1094
1095 #ifdef ENABLE_PM
1096         pm_unregister(wlan_pm_dev);
1097 #endif
1098
1099         adapter->surpriseremoved = 1;
1100
1101         /* Stop the thread servicing the interrupts */
1102         wlan_terminate_thread(&priv->mainthread);
1103
1104         libertas_debugfs_remove_one(priv);
1105
1106         lbs_pr_debug(1, "Free adapter\n");
1107         libertas_free_adapter(priv);
1108
1109         for (i = 0; i<libertas_found; i++) {
1110                 if (libertas_devs[i]==priv->wlan_dev.netdev) {
1111                         libertas_devs[i] = libertas_devs[--libertas_found];
1112                         libertas_devs[libertas_found] = NULL ;
1113                         break ;
1114                 }
1115         }
1116
1117         lbs_pr_debug(1, "Unregister finish\n");
1118
1119         priv->wlan_dev.netdev = NULL;
1120         priv->mesh_dev = NULL ;
1121         free_netdev(mesh_dev);
1122         free_netdev(dev);
1123         wlanpriv = NULL;
1124
1125         LEAVE();
1126         return 0;
1127 }
1128
1129 /**
1130  *  @brief This function finds the CFP in
1131  *  region_cfp_table based on region and band parameter.
1132  *
1133  *  @param region  The region code
1134  *  @param band    The band
1135  *  @param cfp_no  A pointer to CFP number
1136  *  @return        A pointer to CFP
1137  */
1138 struct chan_freq_power *libertas_get_region_cfp_table(u8 region, u8 band, int *cfp_no)
1139 {
1140         int i, end;
1141
1142         ENTER();
1143
1144         end = sizeof(region_cfp_table)/sizeof(struct region_cfp_table);
1145
1146         for (i = 0; i < end ; i++) {
1147                 lbs_pr_debug(1, "region_cfp_table[i].region=%d\n",
1148                         region_cfp_table[i].region);
1149                 if (region_cfp_table[i].region == region) {
1150                         *cfp_no = region_cfp_table[i].cfp_no_BG;
1151                         LEAVE();
1152                         return region_cfp_table[i].cfp_BG;
1153                 }
1154         }
1155
1156         LEAVE();
1157         return NULL;
1158 }
1159
1160 int libertas_set_regiontable(wlan_private * priv, u8 region, u8 band)
1161 {
1162         wlan_adapter *adapter = priv->adapter;
1163         int i = 0;
1164
1165         struct chan_freq_power *cfp;
1166         int cfp_no;
1167
1168         ENTER();
1169
1170         memset(adapter->region_channel, 0, sizeof(adapter->region_channel));
1171
1172         {
1173                 cfp = libertas_get_region_cfp_table(region, band, &cfp_no);
1174                 if (cfp != NULL) {
1175                         adapter->region_channel[i].nrcfp = cfp_no;
1176                         adapter->region_channel[i].CFP = cfp;
1177                 } else {
1178                         lbs_pr_debug(1, "wrong region code %#x in band B-G\n",
1179                                region);
1180                         return -1;
1181                 }
1182                 adapter->region_channel[i].valid = 1;
1183                 adapter->region_channel[i].region = region;
1184                 adapter->region_channel[i].band = band;
1185                 i++;
1186         }
1187         LEAVE();
1188         return 0;
1189 }
1190
1191 /**
1192  *  @brief This function handles the interrupt. it will change PS
1193  *  state if applicable. it will wake up main_thread to handle
1194  *  the interrupt event as well.
1195  *
1196  *  @param dev     A pointer to net_device structure
1197  *  @return        n/a
1198  */
1199 void libertas_interrupt(struct net_device *dev)
1200 {
1201         wlan_private *priv = dev->priv;
1202
1203         ENTER();
1204
1205         lbs_pr_debug(1, "libertas_interrupt: intcounter=%d\n",
1206                priv->adapter->intcounter);
1207
1208         priv->adapter->intcounter++;
1209
1210         if (priv->adapter->psstate == PS_STATE_SLEEP) {
1211                 priv->adapter->psstate = PS_STATE_AWAKE;
1212                 netif_wake_queue(dev);
1213         }
1214
1215         wake_up_interruptible(&priv->mainthread.waitq);
1216
1217         LEAVE();
1218 }
1219
1220 static int wlan_init_module(void)
1221 {
1222         int ret = 0;
1223
1224         ENTER();
1225
1226         if (libertas_fw_name == NULL) {
1227                 libertas_fw_name = default_fw_name;
1228         }
1229
1230         libertas_debugfs_init();
1231
1232         if (libertas_sbi_register()) {
1233                 ret = -1;
1234                 libertas_debugfs_remove();
1235                 goto done;
1236         }
1237
1238 done:
1239         LEAVE();
1240         return ret;
1241 }
1242
1243 static void wlan_cleanup_module(void)
1244 {
1245         int i;
1246
1247         ENTER();
1248
1249         for (i = 0; i<libertas_found; i++) {
1250                 wlan_private *priv = libertas_devs[i]->priv;
1251                 reset_device(priv);
1252         }
1253
1254         libertas_sbi_unregister();
1255         libertas_debugfs_remove();
1256
1257         LEAVE();
1258 }
1259
1260 module_init(wlan_init_module);
1261 module_exit(wlan_cleanup_module);
1262
1263 MODULE_DESCRIPTION("M-WLAN Driver");
1264 MODULE_AUTHOR("Marvell International Ltd.");
1265 MODULE_LICENSE("GPL");