git.oblomov.eu Git - 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
  14 #include <net/iw_handler.h>
  15 #include <net/ieee80211.h>
  16
  17 #include "host.h"
  18 #include "decl.h"
  19 #include "dev.h"
  20 #include "wext.h"
  21 #include "debugfs.h"
  22 #include "assoc.h"
  23
  24 #define DRIVER_RELEASE_VERSION "322.p0"
  25 const char libertas_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
  26 #ifdef  DEBUG
  27     "-dbg"
  28 #endif
  29     "";
  30
  31
  32 /* Module parameters */
  33 unsigned int libertas_debug = 0;
  34 module_param(libertas_debug, int, 0644);
  35 EXPORT_SYMBOL_GPL(libertas_debug);
  36
  37
  38 #define WLAN_TX_PWR_DEFAULT             20      /*100mW */
  39 #define WLAN_TX_PWR_US_DEFAULT          20      /*100mW */
  40 #define WLAN_TX_PWR_JP_DEFAULT          16      /*50mW */
  41 #define WLAN_TX_PWR_FR_DEFAULT          20      /*100mW */
  42 #define WLAN_TX_PWR_EMEA_DEFAULT        20      /*100mW */
  43
  44 /* Format { channel, frequency (MHz), maxtxpower } */
  45 /* band: 'B/G', region: USA FCC/Canada IC */
  46 static struct chan_freq_power channel_freq_power_US_BG[] = {
  47         {1, 2412, WLAN_TX_PWR_US_DEFAULT},
  48         {2, 2417, WLAN_TX_PWR_US_DEFAULT},
  49         {3, 2422, WLAN_TX_PWR_US_DEFAULT},
  50         {4, 2427, WLAN_TX_PWR_US_DEFAULT},
  51         {5, 2432, WLAN_TX_PWR_US_DEFAULT},
  52         {6, 2437, WLAN_TX_PWR_US_DEFAULT},
  53         {7, 2442, WLAN_TX_PWR_US_DEFAULT},
  54         {8, 2447, WLAN_TX_PWR_US_DEFAULT},
  55         {9, 2452, WLAN_TX_PWR_US_DEFAULT},
  56         {10, 2457, WLAN_TX_PWR_US_DEFAULT},
  57         {11, 2462, WLAN_TX_PWR_US_DEFAULT}
  58 };
  59
  60 /* band: 'B/G', region: Europe ETSI */
  61 static struct chan_freq_power channel_freq_power_EU_BG[] = {
  62         {1, 2412, WLAN_TX_PWR_EMEA_DEFAULT},
  63         {2, 2417, WLAN_TX_PWR_EMEA_DEFAULT},
  64         {3, 2422, WLAN_TX_PWR_EMEA_DEFAULT},
  65         {4, 2427, WLAN_TX_PWR_EMEA_DEFAULT},
  66         {5, 2432, WLAN_TX_PWR_EMEA_DEFAULT},
  67         {6, 2437, WLAN_TX_PWR_EMEA_DEFAULT},
  68         {7, 2442, WLAN_TX_PWR_EMEA_DEFAULT},
  69         {8, 2447, WLAN_TX_PWR_EMEA_DEFAULT},
  70         {9, 2452, WLAN_TX_PWR_EMEA_DEFAULT},
  71         {10, 2457, WLAN_TX_PWR_EMEA_DEFAULT},
  72         {11, 2462, WLAN_TX_PWR_EMEA_DEFAULT},
  73         {12, 2467, WLAN_TX_PWR_EMEA_DEFAULT},
  74         {13, 2472, WLAN_TX_PWR_EMEA_DEFAULT}
  75 };
  76
  77 /* band: 'B/G', region: Spain */
  78 static struct chan_freq_power channel_freq_power_SPN_BG[] = {
  79         {10, 2457, WLAN_TX_PWR_DEFAULT},
  80         {11, 2462, WLAN_TX_PWR_DEFAULT}
  81 };
  82
  83 /* band: 'B/G', region: France */
  84 static struct chan_freq_power channel_freq_power_FR_BG[] = {
  85         {10, 2457, WLAN_TX_PWR_FR_DEFAULT},
  86         {11, 2462, WLAN_TX_PWR_FR_DEFAULT},
  87         {12, 2467, WLAN_TX_PWR_FR_DEFAULT},
  88         {13, 2472, WLAN_TX_PWR_FR_DEFAULT}
  89 };
  90
  91 /* band: 'B/G', region: Japan */
  92 static struct chan_freq_power channel_freq_power_JPN_BG[] = {
  93         {1, 2412, WLAN_TX_PWR_JP_DEFAULT},
  94         {2, 2417, WLAN_TX_PWR_JP_DEFAULT},
  95         {3, 2422, WLAN_TX_PWR_JP_DEFAULT},
  96         {4, 2427, WLAN_TX_PWR_JP_DEFAULT},
  97         {5, 2432, WLAN_TX_PWR_JP_DEFAULT},
  98         {6, 2437, WLAN_TX_PWR_JP_DEFAULT},
  99         {7, 2442, WLAN_TX_PWR_JP_DEFAULT},
 100         {8, 2447, WLAN_TX_PWR_JP_DEFAULT},
 101         {9, 2452, WLAN_TX_PWR_JP_DEFAULT},
 102         {10, 2457, WLAN_TX_PWR_JP_DEFAULT},
 103         {11, 2462, WLAN_TX_PWR_JP_DEFAULT},
 104         {12, 2467, WLAN_TX_PWR_JP_DEFAULT},
 105         {13, 2472, WLAN_TX_PWR_JP_DEFAULT},
 106         {14, 2484, WLAN_TX_PWR_JP_DEFAULT}
 107 };
 108
 109 /**
 110  * the structure for channel, frequency and power
 111  */
 112 struct region_cfp_table {
 113         u8 region;
 114         struct chan_freq_power *cfp_BG;
 115         int cfp_no_BG;
 116 };
 117
 118 /**
 119  * the structure for the mapping between region and CFP
 120  */
 121 static struct region_cfp_table region_cfp_table[] = {
 122         {0x10,                  /*US FCC */
 123          channel_freq_power_US_BG,
 124          sizeof(channel_freq_power_US_BG) / sizeof(struct chan_freq_power),
 125          }
 126         ,
 127         {0x20,                  /*CANADA IC */
 128          channel_freq_power_US_BG,
 129          sizeof(channel_freq_power_US_BG) / sizeof(struct chan_freq_power),
 130          }
 131         ,
 132         {0x30, /*EU*/ channel_freq_power_EU_BG,
 133          sizeof(channel_freq_power_EU_BG) / sizeof(struct chan_freq_power),
 134          }
 135         ,
 136         {0x31, /*SPAIN*/ channel_freq_power_SPN_BG,
 137          sizeof(channel_freq_power_SPN_BG) / sizeof(struct chan_freq_power),
 138          }
 139         ,
 140         {0x32, /*FRANCE*/ channel_freq_power_FR_BG,
 141          sizeof(channel_freq_power_FR_BG) / sizeof(struct chan_freq_power),
 142          }
 143         ,
 144         {0x40, /*JAPAN*/ channel_freq_power_JPN_BG,
 145          sizeof(channel_freq_power_JPN_BG) / sizeof(struct chan_freq_power),
 146          }
 147         ,
 148 /*Add new region here */
 149 };
 150
 151 /**
 152  * the rates supported
 153  */
 154 u8 libertas_supported_rates[G_SUPPORTED_RATES] =
 155     { 0x82, 0x84, 0x8b, 0x96, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
 156 0 };
 157
 158 /**
 159  * the rates supported for ad-hoc G mode
 160  */
 161 u8 libertas_adhoc_rates_g[G_SUPPORTED_RATES] =
 162     { 0x82, 0x84, 0x8b, 0x96, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
 163 0 };
 164
 165 /**
 166  * the rates supported for ad-hoc B mode
 167  */
 168 u8 libertas_adhoc_rates_b[4] = { 0x82, 0x84, 0x8b, 0x96 };
 169
 170 /**
 171  * the table to keep region code
 172  */
 173 u16 libertas_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
 174     { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
 175
 176 /**
 177  * Attributes exported through sysfs
 178  */
 179
 180 /**
 181  * @brief Get function for sysfs attribute anycast_mask
 182  */
 183 static ssize_t libertas_anycast_get(struct device * dev,
 184                 struct device_attribute *attr, char * buf) {
 185         struct cmd_ds_mesh_access mesh_access;
 186
 187         memset(&mesh_access, 0, sizeof(mesh_access));
 188         libertas_prepare_and_send_command(to_net_dev(dev)->priv,
 189                         cmd_mesh_access,
 190                         cmd_act_mesh_get_anycast,
 191                         cmd_option_waitforrsp, 0, (void *)&mesh_access);
 192
 193         return snprintf(buf, 12, "0x%X\n", le32_to_cpu(mesh_access.data[0]));
 194 }
 195
 196 /**
 197  * @brief Set function for sysfs attribute anycast_mask
 198  */
 199 static ssize_t libertas_anycast_set(struct device * dev,
 200                 struct device_attribute *attr, const char * buf, size_t count) {
 201         struct cmd_ds_mesh_access mesh_access;
 202         uint32_t datum;
 203
 204         memset(&mesh_access, 0, sizeof(mesh_access));
 205         sscanf(buf, "%x", &datum);
 206         mesh_access.data[0] = cpu_to_le32(datum);
 207
 208         libertas_prepare_and_send_command((to_net_dev(dev))->priv,
 209                         cmd_mesh_access,
 210                         cmd_act_mesh_set_anycast,
 211                         cmd_option_waitforrsp, 0, (void *)&mesh_access);
 212         return strlen(buf);
 213 }
 214
 215 /**
 216  * anycast_mask attribute to be exported per mshX interface
 217  * through sysfs (/sys/class/net/mshX/anycast_mask)
 218  */
 219 static DEVICE_ATTR(anycast_mask, 0644, libertas_anycast_get, libertas_anycast_set);
 220
 221 /**
 222  *  @brief Check if the device can be open and wait if necessary.
 223  *
 224  *  @param dev     A pointer to net_device structure
 225  *  @return        0
 226  *
 227  * For USB adapter, on some systems the device open handler will be
 228  * called before FW ready. Use the following flag check and wait
 229  * function to work around the issue.
 230  *
 231  */
 232 static int pre_open_check(struct net_device *dev)
 233 {
 234         wlan_private *priv = (wlan_private *) dev->priv;
 235         wlan_adapter *adapter = priv->adapter;
 236         int i = 0;
 237
 238         while (!adapter->fw_ready && i < 20) {
 239                 i++;
 240                 msleep_interruptible(100);
 241         }
 242         if (!adapter->fw_ready) {
 243                 lbs_pr_err("firmware not ready\n");
 244                 return -1;
 245         }
 246
 247         return 0;
 248 }
 249
 250 /**
 251  *  @brief This function opens the device
 252  *
 253  *  @param dev     A pointer to net_device structure
 254  *  @return        0
 255  */
 256 static int wlan_dev_open(struct net_device *dev)
 257 {
 258         wlan_private *priv = (wlan_private *) dev->priv;
 259         wlan_adapter *adapter = priv->adapter;
 260
 261         lbs_deb_enter(LBS_DEB_NET);
 262
 263         priv->open = 1;
 264
 265         if (adapter->connect_status == libertas_connected) {
 266                 netif_carrier_on(priv->dev);
 267                 netif_carrier_on(priv->mesh_dev);
 268         } else {
 269                 netif_carrier_off(priv->dev);
 270                 netif_carrier_off(priv->mesh_dev);
 271         }
 272
 273         lbs_deb_leave(LBS_DEB_NET);
 274         return 0;
 275 }
 276 /**
 277  *  @brief This function opens the mshX interface
 278  *
 279  *  @param dev     A pointer to net_device structure
 280  *  @return        0
 281  */
 282 static int mesh_open(struct net_device *dev)
 283 {
 284         wlan_private *priv = (wlan_private *) dev->priv ;
 285
 286         if (pre_open_check(dev) == -1)
 287                 return -1;
 288         priv->mesh_open = 1 ;
 289         netif_wake_queue(priv->mesh_dev);
 290         if (priv->infra_open == 0)
 291                 return wlan_dev_open(priv->dev) ;
 292         return 0;
 293 }
 294
 295 /**
 296  *  @brief This function opens the ethX interface
 297  *
 298  *  @param dev     A pointer to net_device structure
 299  *  @return        0
 300  */
 301 static int wlan_open(struct net_device *dev)
 302 {
 303         wlan_private *priv = (wlan_private *) dev->priv ;
 304
 305         if(pre_open_check(dev) == -1)
 306                 return -1;
 307         priv->infra_open = 1 ;
 308         netif_wake_queue(priv->dev);
 309         if (priv->open == 0)
 310                 return wlan_dev_open(priv->dev) ;
 311         return 0;
 312 }
 313
 314 static int wlan_dev_close(struct net_device *dev)
 315 {
 316         wlan_private *priv = dev->priv;
 317
 318         lbs_deb_enter(LBS_DEB_NET);
 319
 320         netif_carrier_off(priv->dev);
 321         priv->open = 0;
 322
 323         lbs_deb_leave(LBS_DEB_NET);
 324         return 0;
 325 }
 326
 327 /**
 328  *  @brief This function closes the mshX interface
 329  *
 330  *  @param dev     A pointer to net_device structure
 331  *  @return        0
 332  */
 333 static int mesh_close(struct net_device *dev)
 334 {
 335         wlan_private *priv = (wlan_private *) (dev->priv);
 336
 337         priv->mesh_open = 0;
 338         netif_stop_queue(priv->mesh_dev);
 339         if (priv->infra_open == 0)
 340                 return wlan_dev_close(dev);
 341         else
 342                 return 0;
 343 }
 344
 345 /**
 346  *  @brief This function closes the ethX interface
 347  *
 348  *  @param dev     A pointer to net_device structure
 349  *  @return        0
 350  */
 351 static int wlan_close(struct net_device *dev)
 352 {
 353         wlan_private *priv = (wlan_private *) dev->priv;
 354
 355         netif_stop_queue(dev);
 356         priv->infra_open = 0;
 357         if (priv->mesh_open == 0)
 358                 return wlan_dev_close(dev);
 359         else
 360                 return 0;
 361 }
 362
 363
 364 static int wlan_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 365 {
 366         int ret = 0;
 367         wlan_private *priv = dev->priv;
 368
 369         lbs_deb_enter(LBS_DEB_NET);
 370
 371         if (priv->dnld_sent || priv->adapter->TxLockFlag) {
 372                 priv->stats.tx_dropped++;
 373                 goto done;
 374         }
 375
 376         netif_stop_queue(priv->dev);
 377         netif_stop_queue(priv->mesh_dev);
 378
 379         if (libertas_process_tx(priv, skb) == 0)
 380                 dev->trans_start = jiffies;
 381 done:
 382         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 383         return ret;
 384 }
 385
 386 /**
 387  * @brief Mark mesh packets and handover them to wlan_hard_start_xmit
 388  *
 389  */
 390 static int mesh_pre_start_xmit(struct sk_buff *skb, struct net_device *dev)
 391 {
 392         wlan_private *priv = dev->priv;
 393         int ret;
 394
 395         lbs_deb_enter(LBS_DEB_MESH);
 396
 397         SET_MESH_FRAME(skb);
 398
 399         ret = wlan_hard_start_xmit(skb, priv->dev);
 400         lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
 401         return ret;
 402 }
 403
 404 /**
 405  * @brief Mark non-mesh packets and handover them to wlan_hard_start_xmit
 406  *
 407  */
 408 static int wlan_pre_start_xmit(struct sk_buff *skb, struct net_device *dev)
 409 {
 410         int ret;
 411
 412         lbs_deb_enter(LBS_DEB_NET);
 413
 414         UNSET_MESH_FRAME(skb);
 415
 416         ret = wlan_hard_start_xmit(skb, dev);
 417         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 418         return ret;
 419 }
 420
 421 static void wlan_tx_timeout(struct net_device *dev)
 422 {
 423         wlan_private *priv = (wlan_private *) dev->priv;
 424
 425         lbs_deb_enter(LBS_DEB_TX);
 426
 427         lbs_pr_err("tx watch dog timeout\n");
 428
 429         priv->dnld_sent = DNLD_RES_RECEIVED;
 430         dev->trans_start = jiffies;
 431
 432         if (priv->adapter->currenttxskb) {
 433                 if (priv->adapter->radiomode == WLAN_RADIOMODE_RADIOTAP) {
 434                         /* If we are here, we have not received feedback from
 435                            the previous packet.  Assume TX_FAIL and move on. */
 436                         priv->adapter->eventcause = 0x01000000;
 437                         libertas_send_tx_feedback(priv);
 438                 } else
 439                         wake_up_interruptible(&priv->mainthread.waitq);
 440         } else if (priv->adapter->connect_status == libertas_connected) {
 441                 netif_wake_queue(priv->dev);
 442                 netif_wake_queue(priv->mesh_dev);
 443         }
 444
 445         lbs_deb_leave(LBS_DEB_TX);
 446 }
 447
 448 /**
 449  *  @brief This function returns the network statistics
 450  *
 451  *  @param dev     A pointer to wlan_private structure
 452  *  @return        A pointer to net_device_stats structure
 453  */
 454 static struct net_device_stats *wlan_get_stats(struct net_device *dev)
 455 {
 456         wlan_private *priv = (wlan_private *) dev->priv;
 457
 458         return &priv->stats;
 459 }
 460
 461 static int wlan_set_mac_address(struct net_device *dev, void *addr)
 462 {
 463         int ret = 0;
 464         wlan_private *priv = (wlan_private *) dev->priv;
 465         wlan_adapter *adapter = priv->adapter;
 466         struct sockaddr *phwaddr = addr;
 467
 468         lbs_deb_enter(LBS_DEB_NET);
 469
 470         /* In case it was called from the mesh device */
 471         dev = priv->dev ;
 472
 473         memset(adapter->current_addr, 0, ETH_ALEN);
 474
 475         /* dev->dev_addr is 8 bytes */
 476         lbs_dbg_hex("dev->dev_addr:", dev->dev_addr, ETH_ALEN);
 477
 478         lbs_dbg_hex("addr:", phwaddr->sa_data, ETH_ALEN);
 479         memcpy(adapter->current_addr, phwaddr->sa_data, ETH_ALEN);
 480
 481         ret = libertas_prepare_and_send_command(priv, cmd_802_11_mac_address,
 482                                     cmd_act_set,
 483                                     cmd_option_waitforrsp, 0, NULL);
 484
 485         if (ret) {
 486                 lbs_deb_net("set MAC address failed\n");
 487                 ret = -1;
 488                 goto done;
 489         }
 490
 491         lbs_dbg_hex("adapter->macaddr:", adapter->current_addr, ETH_ALEN);
 492         memcpy(dev->dev_addr, adapter->current_addr, ETH_ALEN);
 493         if (priv->mesh_dev)
 494                 memcpy(priv->mesh_dev->dev_addr, adapter->current_addr, ETH_ALEN);
 495
 496 done:
 497         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 498         return ret;
 499 }
 500
 501 static int wlan_copy_multicast_address(wlan_adapter * adapter,
 502                                      struct net_device *dev)
 503 {
 504         int i = 0;
 505         struct dev_mc_list *mcptr = dev->mc_list;
 506
 507         for (i = 0; i < dev->mc_count; i++) {
 508                 memcpy(&adapter->multicastlist[i], mcptr->dmi_addr, ETH_ALEN);
 509                 mcptr = mcptr->next;
 510         }
 511
 512         return i;
 513
 514 }
 515
 516 static void wlan_set_multicast_list(struct net_device *dev)
 517 {
 518         wlan_private *priv = dev->priv;
 519         wlan_adapter *adapter = priv->adapter;
 520         int oldpacketfilter;
 521
 522         lbs_deb_enter(LBS_DEB_NET);
 523
 524         oldpacketfilter = adapter->currentpacketfilter;
 525
 526         if (dev->flags & IFF_PROMISC) {
 527                 lbs_deb_net("enable promiscuous mode\n");
 528                 adapter->currentpacketfilter |=
 529                     cmd_act_mac_promiscuous_enable;
 530                 adapter->currentpacketfilter &=
 531                     ~(cmd_act_mac_all_multicast_enable |
 532                       cmd_act_mac_multicast_enable);
 533         } else {
 534                 /* Multicast */
 535                 adapter->currentpacketfilter &=
 536                     ~cmd_act_mac_promiscuous_enable;
 537
 538                 if (dev->flags & IFF_ALLMULTI || dev->mc_count >
 539                     MRVDRV_MAX_MULTICAST_LIST_SIZE) {
 540                         lbs_deb_net( "enabling all multicast\n");
 541                         adapter->currentpacketfilter |=
 542                             cmd_act_mac_all_multicast_enable;
 543                         adapter->currentpacketfilter &=
 544                             ~cmd_act_mac_multicast_enable;
 545                 } else {
 546                         adapter->currentpacketfilter &=
 547                             ~cmd_act_mac_all_multicast_enable;
 548
 549                         if (!dev->mc_count) {
 550                                 lbs_deb_net("no multicast addresses, "
 551                                        "disabling multicast\n");
 552                                 adapter->currentpacketfilter &=
 553                                     ~cmd_act_mac_multicast_enable;
 554                         } else {
 555                                 int i;
 556
 557                                 adapter->currentpacketfilter |=
 558                                     cmd_act_mac_multicast_enable;
 559
 560                                 adapter->nr_of_multicastmacaddr =
 561                                     wlan_copy_multicast_address(adapter, dev);
 562
 563                                 lbs_deb_net("multicast addresses: %d\n",
 564                                        dev->mc_count);
 565
 566                                 for (i = 0; i < dev->mc_count; i++) {
 567                                         lbs_deb_net("Multicast address %d:"
 568                                                MAC_FMT "\n", i,
 569                                                adapter->multicastlist[i][0],
 570                                                adapter->multicastlist[i][1],
 571                                                adapter->multicastlist[i][2],
 572                                                adapter->multicastlist[i][3],
 573                                                adapter->multicastlist[i][4],
 574                                                adapter->multicastlist[i][5]);
 575                                 }
 576                                 /* send multicast addresses to firmware */
 577                                 libertas_prepare_and_send_command(priv,
 578                                                       cmd_mac_multicast_adr,
 579                                                       cmd_act_set, 0, 0,
 580                                                       NULL);
 581                         }
 582                 }
 583         }
 584
 585         if (adapter->currentpacketfilter != oldpacketfilter) {
 586                 libertas_set_mac_packet_filter(priv);
 587         }
 588
 589         lbs_deb_leave(LBS_DEB_NET);
 590 }
 591
 592 /**
 593  *  @brief This function handles the major jobs in the WLAN driver.
 594  *  It handles all events generated by firmware, RX data received
 595  *  from firmware and TX data sent from kernel.
 596  *
 597  *  @param data    A pointer to wlan_thread structure
 598  *  @return        0
 599  */
 600 static int wlan_service_main_thread(void *data)
 601 {
 602         struct wlan_thread *thread = data;
 603         wlan_private *priv = thread->priv;
 604         wlan_adapter *adapter = priv->adapter;
 605         wait_queue_t wait;
 606         u8 ireg = 0;
 607
 608         lbs_deb_enter(LBS_DEB_THREAD);
 609
 610         wlan_activate_thread(thread);
 611
 612         init_waitqueue_entry(&wait, current);
 613
 614         for (;;) {
 615                 lbs_deb_thread( "main-thread 111: intcounter=%d "
 616                        "currenttxskb=%p dnld_sent=%d\n",
 617                        adapter->intcounter,
 618                        adapter->currenttxskb, priv->dnld_sent);
 619
 620                 add_wait_queue(&thread->waitq, &wait);
 621                 set_current_state(TASK_INTERRUPTIBLE);
 622                 spin_lock_irq(&adapter->driver_lock);
 623                 if ((adapter->psstate == PS_STATE_SLEEP) ||
 624                     (!adapter->intcounter
 625                      && (priv->dnld_sent || adapter->cur_cmd ||
 626                          list_empty(&adapter->cmdpendingq)))) {
 627                         lbs_deb_thread(
 628                                "main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
 629                                adapter->connect_status, adapter->intcounter,
 630                                adapter->psmode, adapter->psstate);
 631                         spin_unlock_irq(&adapter->driver_lock);
 632                         schedule();
 633                 } else
 634                         spin_unlock_irq(&adapter->driver_lock);
 635
 636
 637                 lbs_deb_thread(
 638                        "main-thread 222 (waking up): intcounter=%d currenttxskb=%p "
 639                        "dnld_sent=%d\n", adapter->intcounter,
 640                        adapter->currenttxskb, priv->dnld_sent);
 641
 642                 set_current_state(TASK_RUNNING);
 643                 remove_wait_queue(&thread->waitq, &wait);
 644                 try_to_freeze();
 645
 646                 lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p "
 647                        "dnld_sent=%d\n",
 648                        adapter->intcounter,
 649                        adapter->currenttxskb, priv->dnld_sent);
 650
 651                 if (kthread_should_stop()
 652                     || adapter->surpriseremoved) {
 653                         lbs_deb_thread(
 654                                "main-thread: break from main thread: surpriseremoved=0x%x\n",
 655                                adapter->surpriseremoved);
 656                         break;
 657                 }
 658
 659
 660                 spin_lock_irq(&adapter->driver_lock);
 661                 if (adapter->intcounter) {
 662                         u8 int_status;
 663                         adapter->intcounter = 0;
 664                         int_status = priv->hw_get_int_status(priv, &ireg);
 665
 666                         if (int_status) {
 667                                 lbs_deb_thread(
 668                                        "main-thread: reading HOST_INT_STATUS_REG failed\n");
 669                                 spin_unlock_irq(&adapter->driver_lock);
 670                                 continue;
 671                         }
 672                         adapter->hisregcpy |= ireg;
 673                 }
 674
 675                 lbs_deb_thread("main-thread 444: intcounter=%d currenttxskb=%p "
 676                        "dnld_sent=%d\n",
 677                        adapter->intcounter,
 678                        adapter->currenttxskb, priv->dnld_sent);
 679
 680                 /* command response? */
 681                 if (adapter->hisregcpy & his_cmdupldrdy) {
 682                         lbs_deb_thread("main-thread: cmd response ready\n");
 683
 684                         adapter->hisregcpy &= ~his_cmdupldrdy;
 685                         spin_unlock_irq(&adapter->driver_lock);
 686                         libertas_process_rx_command(priv);
 687                         spin_lock_irq(&adapter->driver_lock);
 688                 }
 689
 690                 /* Any Card Event */
 691                 if (adapter->hisregcpy & his_cardevent) {
 692                         lbs_deb_thread("main-thread: Card Event Activity\n");
 693
 694                         adapter->hisregcpy &= ~his_cardevent;
 695
 696                         if (priv->hw_read_event_cause(priv)) {
 697                                 lbs_pr_alert(
 698                                        "main-thread: hw_read_event_cause failed\n");
 699                                 spin_unlock_irq(&adapter->driver_lock);
 700                                 continue;
 701                         }
 702                         spin_unlock_irq(&adapter->driver_lock);
 703                         libertas_process_event(priv);
 704                 } else
 705                         spin_unlock_irq(&adapter->driver_lock);
 706
 707                 /* Check if we need to confirm Sleep Request received previously */
 708                 if (adapter->psstate == PS_STATE_PRE_SLEEP) {
 709                         if (!priv->dnld_sent && !adapter->cur_cmd) {
 710                                 if (adapter->connect_status ==
 711                                     libertas_connected) {
 712                                         lbs_deb_thread(
 713                                                "main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p "
 714                                                "dnld_sent=%d cur_cmd=%p, confirm now\n",
 715                                                adapter->intcounter,
 716                                                adapter->currenttxskb,
 717                                                priv->dnld_sent,
 718                                                adapter->cur_cmd);
 719
 720                                         libertas_ps_confirm_sleep(priv,
 721                                                        (u16) adapter->psmode);
 722                                 } else {
 723                                         /* workaround for firmware sending
 724                                          * deauth/linkloss event immediately
 725                                          * after sleep request, remove this
 726                                          * after firmware fixes it
 727                                          */
 728                                         adapter->psstate = PS_STATE_AWAKE;
 729                                         lbs_pr_alert(
 730                                                "main-thread: ignore PS_SleepConfirm in non-connected state\n");
 731                                 }
 732                         }
 733                 }
 734
 735                 /* The PS state is changed during processing of Sleep Request
 736                  * event above
 737                  */
 738                 if ((priv->adapter->psstate == PS_STATE_SLEEP) ||
 739                     (priv->adapter->psstate == PS_STATE_PRE_SLEEP))
 740                         continue;
 741
 742                 /* Execute the next command */
 743                 if (!priv->dnld_sent && !priv->adapter->cur_cmd)
 744                         libertas_execute_next_command(priv);
 745
 746                 /* Wake-up command waiters which can't sleep in
 747                  * libertas_prepare_and_send_command
 748                  */
 749                 if (!adapter->nr_cmd_pending)
 750                         wake_up_all(&adapter->cmd_pending);
 751
 752                 libertas_tx_runqueue(priv);
 753         }
 754
 755         del_timer(&adapter->command_timer);
 756         adapter->nr_cmd_pending = 0;
 757         wake_up_all(&adapter->cmd_pending);
 758         wlan_deactivate_thread(thread);
 759
 760         lbs_deb_leave(LBS_DEB_THREAD);
 761         return 0;
 762 }
 763
 764 /**
 765  * @brief This function adds the card. it will probe the
 766  * card, allocate the wlan_priv and initialize the device.
 767  *
 768  *  @param card    A pointer to card
 769  *  @return        A pointer to wlan_private structure
 770  */
 771 wlan_private *libertas_add_card(void *card, struct device *dmdev)
 772 {
 773         struct net_device *dev = NULL;
 774         wlan_private *priv = NULL;
 775
 776         lbs_deb_enter(LBS_DEB_NET);
 777
 778         /* Allocate an Ethernet device and register it */
 779         if (!(dev = alloc_etherdev(sizeof(wlan_private)))) {
 780                 lbs_pr_err("init ethX device failed\n");
 781                 return NULL;
 782         }
 783         priv = dev->priv;
 784
 785         /* allocate buffer for wlan_adapter */
 786         if (!(priv->adapter = kzalloc(sizeof(wlan_adapter), GFP_KERNEL))) {
 787                 lbs_pr_err("allocate buffer for wlan_adapter failed\n");
 788                 goto err_kzalloc;
 789         }
 790
 791         priv->dev = dev;
 792         priv->card = card;
 793         priv->mesh_open = 0;
 794         priv->infra_open = 0;
 795
 796         SET_MODULE_OWNER(dev);
 797
 798         /* Setup the OS Interface to our functions */
 799         dev->open = wlan_open;
 800         dev->hard_start_xmit = wlan_pre_start_xmit;
 801         dev->stop = wlan_close;
 802         dev->do_ioctl = libertas_do_ioctl;
 803         dev->set_mac_address = wlan_set_mac_address;
 804         dev->tx_timeout = wlan_tx_timeout;
 805         dev->get_stats = wlan_get_stats;
 806         dev->watchdog_timeo = 5 * HZ;
 807         dev->ethtool_ops = &libertas_ethtool_ops;
 808 #ifdef  WIRELESS_EXT
 809         dev->wireless_handlers = (struct iw_handler_def *)&libertas_handler_def;
 810 #endif
 811 #define NETIF_F_DYNALLOC 16
 812         dev->features |= NETIF_F_DYNALLOC;
 813         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
 814         dev->set_multicast_list = wlan_set_multicast_list;
 815
 816         SET_NETDEV_DEV(dev, dmdev);
 817
 818         INIT_LIST_HEAD(&priv->adapter->cmdfreeq);
 819         INIT_LIST_HEAD(&priv->adapter->cmdpendingq);
 820
 821         spin_lock_init(&priv->adapter->driver_lock);
 822         init_waitqueue_head(&priv->adapter->cmd_pending);
 823         priv->adapter->nr_cmd_pending = 0;
 824         goto done;
 825
 826 err_kzalloc:
 827         free_netdev(dev);
 828         priv = NULL;
 829 done:
 830         lbs_deb_leave_args(LBS_DEB_NET, "priv %p", priv);
 831         return priv;
 832 }
 833 EXPORT_SYMBOL_GPL(libertas_add_card);
 834
 835 int libertas_activate_card(wlan_private *priv, char *fw_name)
 836 {
 837         struct net_device *dev = priv->dev;
 838         int ret = -1;
 839
 840         lbs_deb_enter(LBS_DEB_MAIN);
 841
 842         lbs_deb_thread("Starting kthread...\n");
 843         priv->mainthread.priv = priv;
 844         wlan_create_thread(wlan_service_main_thread,
 845                            &priv->mainthread, "wlan_main_service");
 846
 847         priv->assoc_thread =
 848                 create_singlethread_workqueue("libertas_assoc");
 849         INIT_DELAYED_WORK(&priv->assoc_work, libertas_association_worker);
 850         INIT_WORK(&priv->sync_channel, libertas_sync_channel);
 851
 852         /*
 853          * Register the device. Fillup the private data structure with
 854          * relevant information from the card and request for the required
 855          * IRQ.
 856          */
 857         if (priv->hw_register_dev(priv) < 0) {
 858                 lbs_pr_err("failed to register WLAN device\n");
 859                 goto err_registerdev;
 860         }
 861
 862         /* init FW and HW */
 863         if (fw_name && libertas_init_fw(priv, fw_name)) {
 864                 lbs_pr_err("firmware init failed\n");
 865                 goto err_registerdev;
 866         }
 867
 868         if (register_netdev(dev)) {
 869                 lbs_pr_err("cannot register ethX device\n");
 870                 goto err_init_fw;
 871         }
 872
 873         lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
 874
 875         libertas_debugfs_init_one(priv, dev);
 876
 877         ret = 0;
 878         goto done;
 879
 880 err_init_fw:
 881         priv->hw_unregister_dev(priv);
 882 err_registerdev:
 883         destroy_workqueue(priv->assoc_thread);
 884         /* Stop the thread servicing the interrupts */
 885         wake_up_interruptible(&priv->mainthread.waitq);
 886         wlan_terminate_thread(&priv->mainthread);
 887 done:
 888         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 889         return ret;
 890 }
 891 EXPORT_SYMBOL_GPL(libertas_activate_card);
 892
 893
 894 /**
 895  * @brief This function adds mshX interface
 896  *
 897  *  @param priv    A pointer to the wlan_private structure
 898  *  @return        0 if successful, -X otherwise
 899  */
 900 int libertas_add_mesh(wlan_private *priv, struct device *dev)
 901 {
 902         struct net_device *mesh_dev = NULL;
 903         int ret = 0;
 904
 905         lbs_deb_enter(LBS_DEB_MESH);
 906
 907         /* Allocate a virtual mesh device */
 908         if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
 909                 lbs_deb_mesh("init mshX device failed\n");
 910                 ret = -ENOMEM;
 911                 goto done;
 912         }
 913         mesh_dev->priv = priv;
 914         priv->mesh_dev = mesh_dev;
 915
 916         SET_MODULE_OWNER(mesh_dev);
 917
 918         mesh_dev->open = mesh_open;
 919         mesh_dev->hard_start_xmit = mesh_pre_start_xmit;
 920         mesh_dev->stop = mesh_close;
 921         mesh_dev->do_ioctl = libertas_do_ioctl;
 922         mesh_dev->get_stats = wlan_get_stats;
 923         mesh_dev->set_mac_address = wlan_set_mac_address;
 924         mesh_dev->ethtool_ops = &libertas_ethtool_ops;
 925         memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
 926                         sizeof(priv->dev->dev_addr));
 927
 928         SET_NETDEV_DEV(priv->mesh_dev, dev);
 929
 930 #ifdef  WIRELESS_EXT
 931         mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
 932 #endif
 933 #define NETIF_F_DYNALLOC 16
 934
 935         /* Register virtual mesh interface */
 936         ret = register_netdev(mesh_dev);
 937         if (ret) {
 938                 lbs_pr_err("cannot register mshX virtual interface\n");
 939                 goto err_free;
 940         }
 941
 942         ret = device_create_file(&(mesh_dev->dev), &dev_attr_anycast_mask);
 943         if (ret)
 944                 goto err_unregister;
 945
 946         /* Everything successful */
 947         ret = 0;
 948         goto done;
 949
 950
 951 err_unregister:
 952         unregister_netdev(mesh_dev);
 953
 954 err_free:
 955         free_netdev(mesh_dev);
 956
 957 done:
 958         lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
 959         return ret;
 960 }
 961 EXPORT_SYMBOL_GPL(libertas_add_mesh);
 962
 963 static void wake_pending_cmdnodes(wlan_private *priv)
 964 {
 965         struct cmd_ctrl_node *cmdnode;
 966         unsigned long flags;
 967
 968         lbs_deb_enter(LBS_DEB_CMD);
 969
 970         spin_lock_irqsave(&priv->adapter->driver_lock, flags);
 971         list_for_each_entry(cmdnode, &priv->adapter->cmdpendingq, list) {
 972                 cmdnode->cmdwaitqwoken = 1;
 973                 wake_up_interruptible(&cmdnode->cmdwait_q);
 974         }
 975         spin_unlock_irqrestore(&priv->adapter->driver_lock, flags);
 976 }
 977
 978
 979 int libertas_remove_card(wlan_private *priv)
 980 {
 981         wlan_adapter *adapter;
 982         struct net_device *dev;
 983         union iwreq_data wrqu;
 984
 985         lbs_deb_enter(LBS_DEB_NET);
 986
 987         if (!priv)
 988                 goto out;
 989
 990         adapter = priv->adapter;
 991
 992         if (!adapter)
 993                 goto out;
 994
 995         dev = priv->dev;
 996
 997         netif_stop_queue(priv->dev);
 998         netif_carrier_off(priv->dev);
 999
1000         wake_pending_cmdnodes(priv);
1001
1002         unregister_netdev(dev);
1003
1004         cancel_delayed_work(&priv->assoc_work);
1005         destroy_workqueue(priv->assoc_thread);
1006
1007         if (adapter->psmode == wlan802_11powermodemax_psp) {
1008                 adapter->psmode = wlan802_11powermodecam;
1009                 libertas_ps_wakeup(priv, cmd_option_waitforrsp);
1010         }
1011
1012         memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1013         wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1014         wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1015
1016         adapter->surpriseremoved = 1;
1017
1018         /* Stop the thread servicing the interrupts */
1019         wlan_terminate_thread(&priv->mainthread);
1020
1021         libertas_debugfs_remove_one(priv);
1022
1023         lbs_deb_net("free adapter\n");
1024         libertas_free_adapter(priv);
1025
1026         lbs_deb_net("unregister finish\n");
1027
1028         priv->dev = NULL;
1029         free_netdev(dev);
1030
1031 out:
1032         lbs_deb_leave(LBS_DEB_NET);
1033         return 0;
1034 }
1035 EXPORT_SYMBOL_GPL(libertas_remove_card);
1036
1037
1038 void libertas_remove_mesh(wlan_private *priv)
1039 {
1040         struct net_device *mesh_dev;
1041
1042         lbs_deb_enter(LBS_DEB_NET);
1043
1044         if (!priv)
1045                 goto out;
1046
1047         mesh_dev = priv->mesh_dev;
1048
1049         netif_stop_queue(mesh_dev);
1050         netif_carrier_off(priv->mesh_dev);
1051
1052         device_remove_file(&(mesh_dev->dev), &dev_attr_anycast_mask);
1053         unregister_netdev(mesh_dev);
1054
1055         priv->mesh_dev = NULL ;
1056         free_netdev(mesh_dev);
1057
1058 out:
1059         lbs_deb_leave(LBS_DEB_NET);
1060 }
1061 EXPORT_SYMBOL_GPL(libertas_remove_mesh);
1062
1063 /**
1064  *  @brief This function finds the CFP in
1065  *  region_cfp_table based on region and band parameter.
1066  *
1067  *  @param region  The region code
1068  *  @param band    The band
1069  *  @param cfp_no  A pointer to CFP number
1070  *  @return        A pointer to CFP
1071  */
1072 struct chan_freq_power *libertas_get_region_cfp_table(u8 region, u8 band, int *cfp_no)
1073 {
1074         int i, end;
1075
1076         lbs_deb_enter(LBS_DEB_MAIN);
1077
1078         end = sizeof(region_cfp_table)/sizeof(struct region_cfp_table);
1079
1080         for (i = 0; i < end ; i++) {
1081                 lbs_deb_main("region_cfp_table[i].region=%d\n",
1082                         region_cfp_table[i].region);
1083                 if (region_cfp_table[i].region == region) {
1084                         *cfp_no = region_cfp_table[i].cfp_no_BG;
1085                         lbs_deb_leave(LBS_DEB_MAIN);
1086                         return region_cfp_table[i].cfp_BG;
1087                 }
1088         }
1089
1090         lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1091         return NULL;
1092 }
1093
1094 int libertas_set_regiontable(wlan_private * priv, u8 region, u8 band)
1095 {
1096         wlan_adapter *adapter = priv->adapter;
1097         int ret = 0;
1098         int i = 0;
1099
1100         struct chan_freq_power *cfp;
1101         int cfp_no;
1102
1103         lbs_deb_enter(LBS_DEB_MAIN);
1104
1105         memset(adapter->region_channel, 0, sizeof(adapter->region_channel));
1106
1107         {
1108                 cfp = libertas_get_region_cfp_table(region, band, &cfp_no);
1109                 if (cfp != NULL) {
1110                         adapter->region_channel[i].nrcfp = cfp_no;
1111                         adapter->region_channel[i].CFP = cfp;
1112                 } else {
1113                         lbs_deb_main("wrong region code %#x in band B/G\n",
1114                                region);
1115                         ret = -1;
1116                         goto out;
1117                 }
1118                 adapter->region_channel[i].valid = 1;
1119                 adapter->region_channel[i].region = region;
1120                 adapter->region_channel[i].band = band;
1121                 i++;
1122         }
1123 out:
1124         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1125         return ret;
1126 }
1127
1128 /**
1129  *  @brief This function handles the interrupt. it will change PS
1130  *  state if applicable. it will wake up main_thread to handle
1131  *  the interrupt event as well.
1132  *
1133  *  @param dev     A pointer to net_device structure
1134  *  @return        n/a
1135  */
1136 void libertas_interrupt(struct net_device *dev)
1137 {
1138         wlan_private *priv = dev->priv;
1139
1140         lbs_deb_enter(LBS_DEB_THREAD);
1141
1142         lbs_deb_thread("libertas_interrupt: intcounter=%d\n",
1143                priv->adapter->intcounter);
1144
1145         priv->adapter->intcounter++;
1146
1147         if (priv->adapter->psstate == PS_STATE_SLEEP) {
1148                 priv->adapter->psstate = PS_STATE_AWAKE;
1149                 netif_wake_queue(dev);
1150                 netif_wake_queue(priv->mesh_dev);
1151         }
1152
1153         wake_up_interruptible(&priv->mainthread.waitq);
1154
1155         lbs_deb_leave(LBS_DEB_THREAD);
1156 }
1157 EXPORT_SYMBOL_GPL(libertas_interrupt);
1158
1159 static int libertas_init_module(void)
1160 {
1161         lbs_deb_enter(LBS_DEB_MAIN);
1162         libertas_debugfs_init();
1163         lbs_deb_leave(LBS_DEB_MAIN);
1164         return 0;
1165 }
1166
1167 static void libertas_exit_module(void)
1168 {
1169         lbs_deb_enter(LBS_DEB_MAIN);
1170
1171         libertas_debugfs_remove();
1172
1173         lbs_deb_leave(LBS_DEB_MAIN);
1174 }
1175
1176 module_init(libertas_init_module);
1177 module_exit(libertas_exit_module);
1178
1179 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1180 MODULE_AUTHOR("Marvell International Ltd.");
1181 MODULE_LICENSE("GPL");