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
  14 #include <net/iw_handler.h>
  15 #include <net/ieee80211.h>
  16
  17 #include "host.h"
  18 #include "sbi.h"
  19 #include "decl.h"
  20 #include "dev.h"
  21 #include "fw.h"
  22 #include "wext.h"
  23 #include "debugfs.h"
  24 #include "assoc.h"
  25
  26 #define DRIVER_RELEASE_VERSION "320.p0"
  27 const char libertas_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
  28 #ifdef  DEBUG
  29     "-dbg"
  30 #endif
  31     "";
  32
  33
  34 /* Module parameters */
  35 unsigned int libertas_debug = 0;
  36 module_param(libertas_debug, int, 0644);
  37
  38
  39
  40 #define WLAN_TX_PWR_DEFAULT             20      /*100mW */
  41 #define WLAN_TX_PWR_US_DEFAULT          20      /*100mW */
  42 #define WLAN_TX_PWR_JP_DEFAULT          16      /*50mW */
  43 #define WLAN_TX_PWR_FR_DEFAULT          20      /*100mW */
  44 #define WLAN_TX_PWR_EMEA_DEFAULT        20      /*100mW */
  45
  46 /* Format { channel, frequency (MHz), maxtxpower } */
  47 /* band: 'B/G', region: USA FCC/Canada IC */
  48 static struct chan_freq_power channel_freq_power_US_BG[] = {
  49         {1, 2412, WLAN_TX_PWR_US_DEFAULT},
  50         {2, 2417, WLAN_TX_PWR_US_DEFAULT},
  51         {3, 2422, WLAN_TX_PWR_US_DEFAULT},
  52         {4, 2427, WLAN_TX_PWR_US_DEFAULT},
  53         {5, 2432, WLAN_TX_PWR_US_DEFAULT},
  54         {6, 2437, WLAN_TX_PWR_US_DEFAULT},
  55         {7, 2442, WLAN_TX_PWR_US_DEFAULT},
  56         {8, 2447, WLAN_TX_PWR_US_DEFAULT},
  57         {9, 2452, WLAN_TX_PWR_US_DEFAULT},
  58         {10, 2457, WLAN_TX_PWR_US_DEFAULT},
  59         {11, 2462, WLAN_TX_PWR_US_DEFAULT}
  60 };
  61
  62 /* band: 'B/G', region: Europe ETSI */
  63 static struct chan_freq_power channel_freq_power_EU_BG[] = {
  64         {1, 2412, WLAN_TX_PWR_EMEA_DEFAULT},
  65         {2, 2417, WLAN_TX_PWR_EMEA_DEFAULT},
  66         {3, 2422, WLAN_TX_PWR_EMEA_DEFAULT},
  67         {4, 2427, WLAN_TX_PWR_EMEA_DEFAULT},
  68         {5, 2432, WLAN_TX_PWR_EMEA_DEFAULT},
  69         {6, 2437, WLAN_TX_PWR_EMEA_DEFAULT},
  70         {7, 2442, WLAN_TX_PWR_EMEA_DEFAULT},
  71         {8, 2447, WLAN_TX_PWR_EMEA_DEFAULT},
  72         {9, 2452, WLAN_TX_PWR_EMEA_DEFAULT},
  73         {10, 2457, WLAN_TX_PWR_EMEA_DEFAULT},
  74         {11, 2462, WLAN_TX_PWR_EMEA_DEFAULT},
  75         {12, 2467, WLAN_TX_PWR_EMEA_DEFAULT},
  76         {13, 2472, WLAN_TX_PWR_EMEA_DEFAULT}
  77 };
  78
  79 /* band: 'B/G', region: Spain */
  80 static struct chan_freq_power channel_freq_power_SPN_BG[] = {
  81         {10, 2457, WLAN_TX_PWR_DEFAULT},
  82         {11, 2462, WLAN_TX_PWR_DEFAULT}
  83 };
  84
  85 /* band: 'B/G', region: France */
  86 static struct chan_freq_power channel_freq_power_FR_BG[] = {
  87         {10, 2457, WLAN_TX_PWR_FR_DEFAULT},
  88         {11, 2462, WLAN_TX_PWR_FR_DEFAULT},
  89         {12, 2467, WLAN_TX_PWR_FR_DEFAULT},
  90         {13, 2472, WLAN_TX_PWR_FR_DEFAULT}
  91 };
  92
  93 /* band: 'B/G', region: Japan */
  94 static struct chan_freq_power channel_freq_power_JPN_BG[] = {
  95         {1, 2412, WLAN_TX_PWR_JP_DEFAULT},
  96         {2, 2417, WLAN_TX_PWR_JP_DEFAULT},
  97         {3, 2422, WLAN_TX_PWR_JP_DEFAULT},
  98         {4, 2427, WLAN_TX_PWR_JP_DEFAULT},
  99         {5, 2432, WLAN_TX_PWR_JP_DEFAULT},
 100         {6, 2437, WLAN_TX_PWR_JP_DEFAULT},
 101         {7, 2442, WLAN_TX_PWR_JP_DEFAULT},
 102         {8, 2447, WLAN_TX_PWR_JP_DEFAULT},
 103         {9, 2452, WLAN_TX_PWR_JP_DEFAULT},
 104         {10, 2457, WLAN_TX_PWR_JP_DEFAULT},
 105         {11, 2462, WLAN_TX_PWR_JP_DEFAULT},
 106         {12, 2467, WLAN_TX_PWR_JP_DEFAULT},
 107         {13, 2472, WLAN_TX_PWR_JP_DEFAULT},
 108         {14, 2484, WLAN_TX_PWR_JP_DEFAULT}
 109 };
 110
 111 /**
 112  * the structure for channel, frequency and power
 113  */
 114 struct region_cfp_table {
 115         u8 region;
 116         struct chan_freq_power *cfp_BG;
 117         int cfp_no_BG;
 118 };
 119
 120 /**
 121  * the structure for the mapping between region and CFP
 122  */
 123 static struct region_cfp_table region_cfp_table[] = {
 124         {0x10,                  /*US FCC */
 125          channel_freq_power_US_BG,
 126          sizeof(channel_freq_power_US_BG) / sizeof(struct chan_freq_power),
 127          }
 128         ,
 129         {0x20,                  /*CANADA IC */
 130          channel_freq_power_US_BG,
 131          sizeof(channel_freq_power_US_BG) / sizeof(struct chan_freq_power),
 132          }
 133         ,
 134         {0x30, /*EU*/ channel_freq_power_EU_BG,
 135          sizeof(channel_freq_power_EU_BG) / sizeof(struct chan_freq_power),
 136          }
 137         ,
 138         {0x31, /*SPAIN*/ channel_freq_power_SPN_BG,
 139          sizeof(channel_freq_power_SPN_BG) / sizeof(struct chan_freq_power),
 140          }
 141         ,
 142         {0x32, /*FRANCE*/ channel_freq_power_FR_BG,
 143          sizeof(channel_freq_power_FR_BG) / sizeof(struct chan_freq_power),
 144          }
 145         ,
 146         {0x40, /*JAPAN*/ channel_freq_power_JPN_BG,
 147          sizeof(channel_freq_power_JPN_BG) / sizeof(struct chan_freq_power),
 148          }
 149         ,
 150 /*Add new region here */
 151 };
 152
 153 /**
 154  * the rates supported
 155  */
 156 u8 libertas_supported_rates[G_SUPPORTED_RATES] =
 157     { 0x82, 0x84, 0x8b, 0x96, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
 158 0 };
 159
 160 /**
 161  * the rates supported for ad-hoc G mode
 162  */
 163 u8 libertas_adhoc_rates_g[G_SUPPORTED_RATES] =
 164     { 0x82, 0x84, 0x8b, 0x96, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
 165 0 };
 166
 167 /**
 168  * the rates supported for ad-hoc B mode
 169  */
 170 u8 libertas_adhoc_rates_b[4] = { 0x82, 0x84, 0x8b, 0x96 };
 171
 172 #define MAX_DEVS 5
 173 static struct net_device *libertas_devs[MAX_DEVS];
 174 static int libertas_found = 0;
 175
 176 /**
 177  * the table to keep region code
 178  */
 179 u16 libertas_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
 180     { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
 181
 182 static u8 *default_fw_name = "usb8388.bin";
 183
 184 /**
 185  * Attributes exported through sysfs
 186  */
 187
 188 /**
 189  * @brief Get function for sysfs attribute libertas_mpp
 190  */
 191 static ssize_t libertas_mpp_get(struct device * dev,
 192                 struct device_attribute *attr, char * buf) {
 193         struct cmd_ds_mesh_access mesh_access;
 194
 195         memset(&mesh_access, 0, sizeof(mesh_access));
 196         libertas_prepare_and_send_command(to_net_dev(dev)->priv,
 197                         cmd_mesh_access,
 198                         cmd_act_mesh_get_mpp,
 199                         cmd_option_waitforrsp, 0, (void *)&mesh_access);
 200
 201         return snprintf(buf, 3, "%d\n", mesh_access.data[0]);
 202 }
 203
 204 /**
 205  * @brief Set function for sysfs attribute libertas_mpp
 206  */
 207 static ssize_t libertas_mpp_set(struct device * dev,
 208                 struct device_attribute *attr, const char * buf, size_t count) {
 209         struct cmd_ds_mesh_access mesh_access;
 210
 211         memset(&mesh_access, 0, sizeof(mesh_access));
 212         sscanf(buf, "%d", &(mesh_access.data[0]));
 213         libertas_prepare_and_send_command((to_net_dev(dev))->priv,
 214                         cmd_mesh_access,
 215                         cmd_act_mesh_set_mpp,
 216                         cmd_option_waitforrsp, 0, (void *)&mesh_access);
 217         return strlen(buf);
 218 }
 219
 220 /**
 221  * libertas_mpp attribute to be exported per mshX interface
 222  * through sysfs (/sys/class/net/mshX/libertas-mpp)
 223  */
 224 static DEVICE_ATTR(libertas_mpp, 0644, libertas_mpp_get,
 225                 libertas_mpp_set );
 226
 227 /**
 228  *  @brief Check if the device can be open and wait if necessary.
 229  *
 230  *  @param dev     A pointer to net_device structure
 231  *  @return        0
 232  *
 233  * For USB adapter, on some systems the device open handler will be
 234  * called before FW ready. Use the following flag check and wait
 235  * function to work around the issue.
 236  *
 237  */
 238 static int pre_open_check(struct net_device *dev)
 239 {
 240         wlan_private *priv = (wlan_private *) dev->priv;
 241         wlan_adapter *adapter = priv->adapter;
 242         int i = 0;
 243
 244         while (!adapter->fw_ready && i < 20) {
 245                 i++;
 246                 msleep_interruptible(100);
 247         }
 248         if (!adapter->fw_ready) {
 249                 lbs_pr_err("firmware not ready\n");
 250                 return -1;
 251         }
 252
 253         return 0;
 254 }
 255
 256 /**
 257  *  @brief This function opens the device
 258  *
 259  *  @param dev     A pointer to net_device structure
 260  *  @return        0
 261  */
 262 static int wlan_dev_open(struct net_device *dev)
 263 {
 264         wlan_private *priv = (wlan_private *) dev->priv;
 265         wlan_adapter *adapter = priv->adapter;
 266
 267         lbs_deb_enter(LBS_DEB_NET);
 268
 269         priv->open = 1;
 270
 271         if (adapter->connect_status == libertas_connected) {
 272                 netif_carrier_on(priv->wlan_dev.netdev);
 273         } else
 274                 netif_carrier_off(priv->wlan_dev.netdev);
 275
 276         lbs_deb_leave(LBS_DEB_NET);
 277         return 0;
 278 }
 279 /**
 280  *  @brief This function opens the mshX interface
 281  *
 282  *  @param dev     A pointer to net_device structure
 283  *  @return        0
 284  */
 285 static int mesh_open(struct net_device *dev)
 286 {
 287         wlan_private *priv = (wlan_private *) dev->priv ;
 288
 289         if (pre_open_check(dev) == -1)
 290                 return -1;
 291         priv->mesh_open = 1 ;
 292         netif_start_queue(priv->mesh_dev);
 293         if (priv->infra_open == 0)
 294                 return wlan_dev_open(priv->wlan_dev.netdev) ;
 295         return 0;
 296 }
 297
 298 /**
 299  *  @brief This function opens the ethX interface
 300  *
 301  *  @param dev     A pointer to net_device structure
 302  *  @return        0
 303  */
 304 static int wlan_open(struct net_device *dev)
 305 {
 306         wlan_private *priv = (wlan_private *) dev->priv ;
 307
 308         if(pre_open_check(dev) == -1)
 309                 return -1;
 310         priv->infra_open = 1 ;
 311         netif_wake_queue(priv->wlan_dev.netdev);
 312         if (priv->open == 0)
 313                 return wlan_dev_open(priv->wlan_dev.netdev) ;
 314         return 0;
 315 }
 316
 317 static int wlan_dev_close(struct net_device *dev)
 318 {
 319         wlan_private *priv = dev->priv;
 320
 321         lbs_deb_enter(LBS_DEB_NET);
 322
 323         netif_carrier_off(priv->wlan_dev.netdev);
 324         priv->open = 0;
 325
 326         lbs_deb_leave(LBS_DEB_NET);
 327         return 0;
 328 }
 329
 330 /**
 331  *  @brief This function closes the mshX interface
 332  *
 333  *  @param dev     A pointer to net_device structure
 334  *  @return        0
 335  */
 336 static int mesh_close(struct net_device *dev)
 337 {
 338         wlan_private *priv = (wlan_private *) (dev->priv);
 339
 340         priv->mesh_open = 0;
 341         netif_stop_queue(priv->mesh_dev);
 342         if (priv->infra_open == 0)
 343                 return wlan_dev_close( ((wlan_private *) dev->priv)->wlan_dev.netdev) ;
 344         else
 345                 return 0;
 346 }
 347
 348 /**
 349  *  @brief This function closes the ethX interface
 350  *
 351  *  @param dev     A pointer to net_device structure
 352  *  @return        0
 353  */
 354 static int wlan_close(struct net_device *dev)
 355 {
 356         wlan_private *priv = (wlan_private *) dev->priv;
 357
 358         netif_stop_queue(priv->wlan_dev.netdev);
 359         priv->infra_open = 0;
 360         if (priv->mesh_open == 0)
 361                 return wlan_dev_close( ((wlan_private *) dev->priv)->wlan_dev.netdev) ;
 362         else
 363                 return 0;
 364 }
 365
 366
 367 static int wlan_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 368 {
 369         int ret = 0;
 370         wlan_private *priv = dev->priv;
 371
 372         lbs_deb_enter(LBS_DEB_NET);
 373
 374         if (priv->wlan_dev.dnld_sent || priv->adapter->TxLockFlag) {
 375                 priv->stats.tx_dropped++;
 376                 goto done;
 377         }
 378
 379         netif_stop_queue(priv->wlan_dev.netdev);
 380
 381         if (libertas_process_tx(priv, skb) == 0)
 382                 dev->trans_start = jiffies;
 383 done:
 384         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 385         return ret;
 386 }
 387
 388 /**
 389  * @brief Mark mesh packets and handover them to wlan_hard_start_xmit
 390  *
 391  */
 392 static int mesh_pre_start_xmit(struct sk_buff *skb, struct net_device *dev)
 393 {
 394         wlan_private *priv = dev->priv;
 395         int ret;
 396
 397         lbs_deb_enter(LBS_DEB_MESH);
 398
 399         SET_MESH_FRAME(skb);
 400
 401         ret = wlan_hard_start_xmit(skb, priv->wlan_dev.netdev);
 402         lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
 403         return ret;
 404 }
 405
 406 /**
 407  * @brief Mark non-mesh packets and handover them to wlan_hard_start_xmit
 408  *
 409  */
 410 static int wlan_pre_start_xmit(struct sk_buff *skb, struct net_device *dev)
 411 {
 412         int ret;
 413
 414         lbs_deb_enter(LBS_DEB_NET);
 415
 416         UNSET_MESH_FRAME(skb);
 417
 418         ret = wlan_hard_start_xmit(skb, dev);
 419         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 420         return ret;
 421 }
 422
 423 static void wlan_tx_timeout(struct net_device *dev)
 424 {
 425         wlan_private *priv = (wlan_private *) dev->priv;
 426
 427         lbs_deb_enter(LBS_DEB_TX);
 428
 429         lbs_pr_err("tx watch dog timeout\n");
 430
 431         priv->wlan_dev.dnld_sent = DNLD_RES_RECEIVED;
 432         dev->trans_start = jiffies;
 433
 434         if (priv->adapter->currenttxskb) {
 435                 if (priv->adapter->radiomode == WLAN_RADIOMODE_RADIOTAP) {
 436                         /* If we are here, we have not received feedback from
 437                            the previous packet.  Assume TX_FAIL and move on. */
 438                         priv->adapter->eventcause = 0x01000000;
 439                         libertas_send_tx_feedback(priv);
 440                 } else
 441                         wake_up_interruptible(&priv->mainthread.waitq);
 442         } else if (priv->adapter->connect_status == libertas_connected)
 443                 netif_wake_queue(priv->wlan_dev.netdev);
 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         memset(adapter->current_addr, 0, ETH_ALEN);
 471
 472         /* dev->dev_addr is 8 bytes */
 473         lbs_dbg_hex("dev->dev_addr:", dev->dev_addr, ETH_ALEN);
 474
 475         lbs_dbg_hex("addr:", phwaddr->sa_data, ETH_ALEN);
 476         memcpy(adapter->current_addr, phwaddr->sa_data, ETH_ALEN);
 477
 478         ret = libertas_prepare_and_send_command(priv, cmd_802_11_mac_address,
 479                                     cmd_act_set,
 480                                     cmd_option_waitforrsp, 0, NULL);
 481
 482         if (ret) {
 483                 lbs_deb_net("set MAC address failed\n");
 484                 ret = -1;
 485                 goto done;
 486         }
 487
 488         lbs_dbg_hex("adapter->macaddr:", adapter->current_addr, ETH_ALEN);
 489         memcpy(dev->dev_addr, adapter->current_addr, ETH_ALEN);
 490         if (priv->mesh_dev)
 491                 memcpy(priv->mesh_dev->dev_addr, adapter->current_addr, ETH_ALEN);
 492
 493 done:
 494         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 495         return ret;
 496 }
 497
 498 static int wlan_copy_multicast_address(wlan_adapter * adapter,
 499                                      struct net_device *dev)
 500 {
 501         int i = 0;
 502         struct dev_mc_list *mcptr = dev->mc_list;
 503
 504         for (i = 0; i < dev->mc_count; i++) {
 505                 memcpy(&adapter->multicastlist[i], mcptr->dmi_addr, ETH_ALEN);
 506                 mcptr = mcptr->next;
 507         }
 508
 509         return i;
 510
 511 }
 512
 513 static void wlan_set_multicast_list(struct net_device *dev)
 514 {
 515         wlan_private *priv = dev->priv;
 516         wlan_adapter *adapter = priv->adapter;
 517         int oldpacketfilter;
 518
 519         lbs_deb_enter(LBS_DEB_NET);
 520
 521         oldpacketfilter = adapter->currentpacketfilter;
 522
 523         if (dev->flags & IFF_PROMISC) {
 524                 lbs_deb_net("enable promiscuous mode\n");
 525                 adapter->currentpacketfilter |=
 526                     cmd_act_mac_promiscuous_enable;
 527                 adapter->currentpacketfilter &=
 528                     ~(cmd_act_mac_all_multicast_enable |
 529                       cmd_act_mac_multicast_enable);
 530         } else {
 531                 /* Multicast */
 532                 adapter->currentpacketfilter &=
 533                     ~cmd_act_mac_promiscuous_enable;
 534
 535                 if (dev->flags & IFF_ALLMULTI || dev->mc_count >
 536                     MRVDRV_MAX_MULTICAST_LIST_SIZE) {
 537                         lbs_deb_net( "enabling all multicast\n");
 538                         adapter->currentpacketfilter |=
 539                             cmd_act_mac_all_multicast_enable;
 540                         adapter->currentpacketfilter &=
 541                             ~cmd_act_mac_multicast_enable;
 542                 } else {
 543                         adapter->currentpacketfilter &=
 544                             ~cmd_act_mac_all_multicast_enable;
 545
 546                         if (!dev->mc_count) {
 547                                 lbs_deb_net("no multicast addresses, "
 548                                        "disabling multicast\n");
 549                                 adapter->currentpacketfilter &=
 550                                     ~cmd_act_mac_multicast_enable;
 551                         } else {
 552                                 int i;
 553
 554                                 adapter->currentpacketfilter |=
 555                                     cmd_act_mac_multicast_enable;
 556
 557                                 adapter->nr_of_multicastmacaddr =
 558                                     wlan_copy_multicast_address(adapter, dev);
 559
 560                                 lbs_deb_net("multicast addresses: %d\n",
 561                                        dev->mc_count);
 562
 563                                 for (i = 0; i < dev->mc_count; i++) {
 564                                         lbs_deb_net("Multicast address %d:"
 565                                                MAC_FMT "\n", i,
 566                                                adapter->multicastlist[i][0],
 567                                                adapter->multicastlist[i][1],
 568                                                adapter->multicastlist[i][2],
 569                                                adapter->multicastlist[i][3],
 570                                                adapter->multicastlist[i][4],
 571                                                adapter->multicastlist[i][5]);
 572                                 }
 573                                 /* send multicast addresses to firmware */
 574                                 libertas_prepare_and_send_command(priv,
 575                                                       cmd_mac_multicast_adr,
 576                                                       cmd_act_set, 0, 0,
 577                                                       NULL);
 578                         }
 579                 }
 580         }
 581
 582         if (adapter->currentpacketfilter != oldpacketfilter) {
 583                 libertas_set_mac_packet_filter(priv);
 584         }
 585
 586         lbs_deb_leave(LBS_DEB_NET);
 587 }
 588
 589 /**
 590  *  @brief This function handles the major jobs in the WLAN driver.
 591  *  It handles all events generated by firmware, RX data received
 592  *  from firmware and TX data sent from kernel.
 593  *
 594  *  @param data    A pointer to wlan_thread structure
 595  *  @return        0
 596  */
 597 static int wlan_service_main_thread(void *data)
 598 {
 599         struct wlan_thread *thread = data;
 600         wlan_private *priv = thread->priv;
 601         wlan_adapter *adapter = priv->adapter;
 602         wait_queue_t wait;
 603         u8 ireg = 0;
 604
 605         lbs_deb_enter(LBS_DEB_THREAD);
 606
 607         wlan_activate_thread(thread);
 608
 609         init_waitqueue_entry(&wait, current);
 610
 611         for (;;) {
 612                 lbs_deb_thread( "main-thread 111: intcounter=%d "
 613                        "currenttxskb=%p dnld_sent=%d\n",
 614                        adapter->intcounter,
 615                        adapter->currenttxskb, priv->wlan_dev.dnld_sent);
 616
 617                 add_wait_queue(&thread->waitq, &wait);
 618                 set_current_state(TASK_INTERRUPTIBLE);
 619                 spin_lock_irq(&adapter->driver_lock);
 620                 if ((adapter->psstate == PS_STATE_SLEEP) ||
 621                     (!adapter->intcounter
 622                      && (priv->wlan_dev.dnld_sent || adapter->cur_cmd ||
 623                          list_empty(&adapter->cmdpendingq)))) {
 624                         lbs_deb_thread(
 625                                "main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
 626                                adapter->connect_status, adapter->intcounter,
 627                                adapter->psmode, adapter->psstate);
 628                         spin_unlock_irq(&adapter->driver_lock);
 629                         schedule();
 630                 } else
 631                         spin_unlock_irq(&adapter->driver_lock);
 632
 633
 634                 lbs_deb_thread(
 635                        "main-thread 222 (waking up): intcounter=%d currenttxskb=%p "
 636                        "dnld_sent=%d\n", adapter->intcounter,
 637                        adapter->currenttxskb, priv->wlan_dev.dnld_sent);
 638
 639                 set_current_state(TASK_RUNNING);
 640                 remove_wait_queue(&thread->waitq, &wait);
 641                 try_to_freeze();
 642
 643                 lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p "
 644                        "dnld_sent=%d\n",
 645                        adapter->intcounter,
 646                        adapter->currenttxskb, priv->wlan_dev.dnld_sent);
 647
 648                 if (kthread_should_stop()
 649                     || adapter->surpriseremoved) {
 650                         lbs_deb_thread(
 651                                "main-thread: break from main thread: surpriseremoved=0x%x\n",
 652                                adapter->surpriseremoved);
 653                         break;
 654                 }
 655
 656
 657                 spin_lock_irq(&adapter->driver_lock);
 658                 if (adapter->intcounter) {
 659                         u8 int_status;
 660                         adapter->intcounter = 0;
 661                         int_status = libertas_sbi_get_int_status(priv, &ireg);
 662
 663                         if (int_status) {
 664                                 lbs_deb_thread(
 665                                        "main-thread: reading HOST_INT_STATUS_REG failed\n");
 666                                 spin_unlock_irq(&adapter->driver_lock);
 667                                 continue;
 668                         }
 669                         adapter->hisregcpy |= ireg;
 670                 }
 671
 672                 lbs_deb_thread("main-thread 444: intcounter=%d currenttxskb=%p "
 673                        "dnld_sent=%d\n",
 674                        adapter->intcounter,
 675                        adapter->currenttxskb, priv->wlan_dev.dnld_sent);
 676
 677                 /* command response? */
 678                 if (adapter->hisregcpy & his_cmdupldrdy) {
 679                         lbs_deb_thread("main-thread: cmd response ready\n");
 680
 681                         adapter->hisregcpy &= ~his_cmdupldrdy;
 682                         spin_unlock_irq(&adapter->driver_lock);
 683                         libertas_process_rx_command(priv);
 684                         spin_lock_irq(&adapter->driver_lock);
 685                 }
 686
 687                 /* Any Card Event */
 688                 if (adapter->hisregcpy & his_cardevent) {
 689                         lbs_deb_thread("main-thread: Card Event Activity\n");
 690
 691                         adapter->hisregcpy &= ~his_cardevent;
 692
 693                         if (libertas_sbi_read_event_cause(priv)) {
 694                                 lbs_pr_alert(
 695                                        "main-thread: libertas_sbi_read_event_cause failed\n");
 696                                 spin_unlock_irq(&adapter->driver_lock);
 697                                 continue;
 698                         }
 699                         spin_unlock_irq(&adapter->driver_lock);
 700                         libertas_process_event(priv);
 701                 } else
 702                         spin_unlock_irq(&adapter->driver_lock);
 703
 704                 /* Check if we need to confirm Sleep Request received previously */
 705                 if (adapter->psstate == PS_STATE_PRE_SLEEP) {
 706                         if (!priv->wlan_dev.dnld_sent && !adapter->cur_cmd) {
 707                                 if (adapter->connect_status ==
 708                                     libertas_connected) {
 709                                         lbs_deb_thread(
 710                                                "main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p "
 711                                                "dnld_sent=%d cur_cmd=%p, confirm now\n",
 712                                                adapter->intcounter,
 713                                                adapter->currenttxskb,
 714                                                priv->wlan_dev.dnld_sent,
 715                                                adapter->cur_cmd);
 716
 717                                         libertas_ps_confirm_sleep(priv,
 718                                                        (u16) adapter->psmode);
 719                                 } else {
 720                                         /* workaround for firmware sending
 721                                          * deauth/linkloss event immediately
 722                                          * after sleep request, remove this
 723                                          * after firmware fixes it
 724                                          */
 725                                         adapter->psstate = PS_STATE_AWAKE;
 726                                         lbs_pr_alert(
 727                                                "main-thread: ignore PS_SleepConfirm in non-connected state\n");
 728                                 }
 729                         }
 730                 }
 731
 732                 /* The PS state is changed during processing of Sleep Request
 733                  * event above
 734                  */
 735                 if ((priv->adapter->psstate == PS_STATE_SLEEP) ||
 736                     (priv->adapter->psstate == PS_STATE_PRE_SLEEP))
 737                         continue;
 738
 739                 /* Execute the next command */
 740                 if (!priv->wlan_dev.dnld_sent && !priv->adapter->cur_cmd)
 741                         libertas_execute_next_command(priv);
 742
 743                 /* Wake-up command waiters which can't sleep in
 744                  * libertas_prepare_and_send_command
 745                  */
 746                 if (!adapter->nr_cmd_pending)
 747                         wake_up_all(&adapter->cmd_pending);
 748
 749                 libertas_tx_runqueue(priv);
 750         }
 751
 752         del_timer(&adapter->command_timer);
 753         adapter->nr_cmd_pending = 0;
 754         wake_up_all(&adapter->cmd_pending);
 755         wlan_deactivate_thread(thread);
 756
 757         lbs_deb_leave(LBS_DEB_THREAD);
 758         return 0;
 759 }
 760
 761 /**
 762  * @brief This function adds the card. it will probe the
 763  * card, allocate the wlan_priv and initialize the device.
 764  *
 765  *  @param card    A pointer to card
 766  *  @return        A pointer to wlan_private structure
 767  */
 768 wlan_private *wlan_add_card(void *card)
 769 {
 770         struct net_device *dev = NULL;
 771         wlan_private *priv = NULL;
 772
 773         lbs_deb_enter(LBS_DEB_NET);
 774
 775         /* Allocate an Ethernet device and register it */
 776         if (!(dev = alloc_etherdev(sizeof(wlan_private)))) {
 777                 lbs_pr_err("init ethX device failed\n");
 778                 return NULL;
 779         }
 780
 781         priv = dev->priv;
 782
 783         /* allocate buffer for wlan_adapter */
 784         if (!(priv->adapter = kmalloc(sizeof(wlan_adapter), GFP_KERNEL))) {
 785                 lbs_pr_err("allocate buffer for wlan_adapter failed\n");
 786                 goto err_kmalloc;
 787         }
 788
 789         /* init wlan_adapter */
 790         memset(priv->adapter, 0, sizeof(wlan_adapter));
 791
 792         priv->wlan_dev.netdev = dev;
 793         priv->wlan_dev.card = card;
 794         priv->mesh_open = 0;
 795         priv->infra_open = 0;
 796
 797         SET_MODULE_OWNER(dev);
 798
 799         /* Setup the OS Interface to our functions */
 800         dev->open = wlan_open;
 801         dev->hard_start_xmit = wlan_pre_start_xmit;
 802         dev->stop = wlan_close;
 803         dev->do_ioctl = libertas_do_ioctl;
 804         dev->set_mac_address = wlan_set_mac_address;
 805
 806 #define WLAN_WATCHDOG_TIMEOUT   (5 * HZ)
 807
 808         dev->tx_timeout = wlan_tx_timeout;
 809         dev->get_stats = wlan_get_stats;
 810         dev->watchdog_timeo = WLAN_WATCHDOG_TIMEOUT;
 811         dev->ethtool_ops = &libertas_ethtool_ops;
 812
 813 #ifdef  WIRELESS_EXT
 814         dev->wireless_handlers = (struct iw_handler_def *)&libertas_handler_def;
 815 #endif
 816 #define NETIF_F_DYNALLOC 16
 817         dev->features |= NETIF_F_DYNALLOC;
 818         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
 819         dev->set_multicast_list = wlan_set_multicast_list;
 820
 821         INIT_LIST_HEAD(&priv->adapter->cmdfreeq);
 822         INIT_LIST_HEAD(&priv->adapter->cmdpendingq);
 823
 824         spin_lock_init(&priv->adapter->driver_lock);
 825         init_waitqueue_head(&priv->adapter->cmd_pending);
 826         priv->adapter->nr_cmd_pending = 0;
 827
 828         lbs_deb_thread("Starting kthread...\n");
 829         priv->mainthread.priv = priv;
 830         wlan_create_thread(wlan_service_main_thread,
 831                            &priv->mainthread, "wlan_main_service");
 832
 833         priv->assoc_thread =
 834                 create_singlethread_workqueue("libertas_assoc");
 835         INIT_DELAYED_WORK(&priv->assoc_work, libertas_association_worker);
 836
 837         /*
 838          * Register the device. Fillup the private data structure with
 839          * relevant information from the card and request for the required
 840          * IRQ.
 841          */
 842         if (libertas_sbi_register_dev(priv) < 0) {
 843                 lbs_pr_err("failed to register WLAN device\n");
 844                 goto err_registerdev;
 845         }
 846
 847         /* init FW and HW */
 848         if (libertas_init_fw(priv)) {
 849                 lbs_pr_err("firmware init failed\n");
 850                 goto err_registerdev;
 851         }
 852
 853         if (register_netdev(dev)) {
 854                 lbs_pr_err("cannot register ethX device\n");
 855                 goto err_init_fw;
 856         }
 857
 858         lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
 859
 860         libertas_debugfs_init_one(priv, dev);
 861
 862         if (libertas_found == MAX_DEVS)
 863                 goto err_init_fw;
 864         libertas_devs[libertas_found] = dev;
 865         libertas_found++;
 866
 867         lbs_deb_leave_args(LBS_DEB_NET, "priv %p", priv);
 868         return priv;
 869
 870 err_init_fw:
 871         libertas_sbi_unregister_dev(priv);
 872 err_registerdev:
 873         destroy_workqueue(priv->assoc_thread);
 874         /* Stop the thread servicing the interrupts */
 875         wake_up_interruptible(&priv->mainthread.waitq);
 876         wlan_terminate_thread(&priv->mainthread);
 877         kfree(priv->adapter);
 878 err_kmalloc:
 879         free_netdev(dev);
 880
 881         lbs_deb_leave_args(LBS_DEB_NET, "priv NULL");
 882         return NULL;
 883 }
 884
 885 /**
 886  * @brief This function adds mshX interface
 887  *
 888  *  @param priv    A pointer to the wlan_private structure
 889  *  @return        0 if successful, -X otherwise
 890  */
 891 int wlan_add_mesh(wlan_private *priv)
 892 {
 893         struct net_device *mesh_dev = NULL;
 894         int ret = 0;
 895
 896         lbs_deb_enter(LBS_DEB_MESH);
 897
 898         /* Allocate a virtual mesh device */
 899         if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
 900                 lbs_deb_mesh("init mshX device failed\n");
 901                 ret = -ENOMEM;
 902                 goto done;
 903         }
 904         mesh_dev->priv = priv;
 905         priv->mesh_dev = mesh_dev;
 906
 907         SET_MODULE_OWNER(mesh_dev);
 908
 909         mesh_dev->open = mesh_open;
 910         mesh_dev->hard_start_xmit = mesh_pre_start_xmit;
 911         mesh_dev->stop = mesh_close;
 912         mesh_dev->do_ioctl = libertas_do_ioctl;
 913         mesh_dev->get_stats = wlan_get_stats;
 914         mesh_dev->ethtool_ops = &libertas_ethtool_ops;
 915         memcpy(mesh_dev->dev_addr, priv->wlan_dev.netdev->dev_addr,
 916                         sizeof(priv->wlan_dev.netdev->dev_addr));
 917
 918 #ifdef  WIRELESS_EXT
 919         mesh_dev->wireless_handlers = (struct iw_handler_def *)&libertas_handler_def;
 920 #endif
 921 #define NETIF_F_DYNALLOC 16
 922
 923         /* Register virtual mesh interface */
 924         ret = register_netdev(mesh_dev);
 925         if (ret) {
 926                 lbs_pr_err("cannot register mshX virtual interface\n");
 927                 goto err_free;
 928         }
 929
 930         ret = device_create_file(&(mesh_dev->dev), &dev_attr_libertas_mpp);
 931         if (ret)
 932                 goto err_unregister;
 933
 934         /* Everything successful */
 935         ret = 0;
 936         goto done;
 937
 938
 939 err_unregister:
 940         unregister_netdev(mesh_dev);
 941
 942 err_free:
 943         free_netdev(mesh_dev);
 944
 945 done:
 946         lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
 947         return ret;
 948 }
 949
 950 static void wake_pending_cmdnodes(wlan_private *priv)
 951 {
 952         struct cmd_ctrl_node *cmdnode;
 953         unsigned long flags;
 954
 955         lbs_deb_enter(LBS_DEB_CMD);
 956
 957         spin_lock_irqsave(&priv->adapter->driver_lock, flags);
 958         list_for_each_entry(cmdnode, &priv->adapter->cmdpendingq, list) {
 959                 cmdnode->cmdwaitqwoken = 1;
 960                 wake_up_interruptible(&cmdnode->cmdwait_q);
 961         }
 962         spin_unlock_irqrestore(&priv->adapter->driver_lock, flags);
 963 }
 964
 965
 966 int wlan_remove_card(wlan_private *priv)
 967 {
 968         wlan_adapter *adapter;
 969         struct net_device *dev;
 970         union iwreq_data wrqu;
 971         int i;
 972
 973         lbs_deb_enter(LBS_DEB_NET);
 974
 975         if (!priv)
 976                 goto out;
 977
 978         adapter = priv->adapter;
 979
 980         if (!adapter)
 981                 goto out;
 982
 983         dev = priv->wlan_dev.netdev;
 984
 985         netif_stop_queue(priv->wlan_dev.netdev);
 986         netif_carrier_off(priv->wlan_dev.netdev);
 987
 988         wake_pending_cmdnodes(priv);
 989
 990         unregister_netdev(dev);
 991
 992         cancel_delayed_work(&priv->assoc_work);
 993         destroy_workqueue(priv->assoc_thread);
 994
 995         if (adapter->psmode == wlan802_11powermodemax_psp) {
 996                 adapter->psmode = wlan802_11powermodecam;
 997                 libertas_ps_wakeup(priv, cmd_option_waitforrsp);
 998         }
 999
1000         memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1001         wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1002         wireless_send_event(priv->wlan_dev.netdev, SIOCGIWAP, &wrqu, NULL);
1003
1004         adapter->surpriseremoved = 1;
1005
1006         /* Stop the thread servicing the interrupts */
1007         wlan_terminate_thread(&priv->mainthread);
1008
1009         libertas_debugfs_remove_one(priv);
1010
1011         lbs_deb_net("free adapter\n");
1012         libertas_free_adapter(priv);
1013
1014         for (i = 0; i<libertas_found; i++) {
1015                 if (libertas_devs[i]==priv->wlan_dev.netdev) {
1016                         libertas_devs[i] = libertas_devs[--libertas_found];
1017                         libertas_devs[libertas_found] = NULL ;
1018                         break ;
1019                 }
1020         }
1021
1022         lbs_deb_net("unregister finish\n");
1023
1024         priv->wlan_dev.netdev = NULL;
1025         free_netdev(dev);
1026
1027 out:
1028         lbs_deb_leave(LBS_DEB_NET);
1029         return 0;
1030 }
1031
1032 void wlan_remove_mesh(wlan_private *priv)
1033 {
1034         struct net_device *mesh_dev;
1035
1036         lbs_deb_enter(LBS_DEB_NET);
1037
1038         if (!priv)
1039                 goto out;
1040
1041         mesh_dev = priv->mesh_dev;
1042
1043         netif_stop_queue(mesh_dev);
1044
1045         device_remove_file(&(mesh_dev->dev), &dev_attr_libertas_mpp);
1046         unregister_netdev(mesh_dev);
1047
1048         priv->mesh_dev = NULL ;
1049         free_netdev(mesh_dev);
1050
1051 out:
1052         lbs_deb_leave(LBS_DEB_NET);
1053 }
1054
1055 /**
1056  *  @brief This function finds the CFP in
1057  *  region_cfp_table based on region and band parameter.
1058  *
1059  *  @param region  The region code
1060  *  @param band    The band
1061  *  @param cfp_no  A pointer to CFP number
1062  *  @return        A pointer to CFP
1063  */
1064 struct chan_freq_power *libertas_get_region_cfp_table(u8 region, u8 band, int *cfp_no)
1065 {
1066         int i, end;
1067
1068         lbs_deb_enter(LBS_DEB_MAIN);
1069
1070         end = sizeof(region_cfp_table)/sizeof(struct region_cfp_table);
1071
1072         for (i = 0; i < end ; i++) {
1073                 lbs_deb_main("region_cfp_table[i].region=%d\n",
1074                         region_cfp_table[i].region);
1075                 if (region_cfp_table[i].region == region) {
1076                         *cfp_no = region_cfp_table[i].cfp_no_BG;
1077                         lbs_deb_leave(LBS_DEB_MAIN);
1078                         return region_cfp_table[i].cfp_BG;
1079                 }
1080         }
1081
1082         lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1083         return NULL;
1084 }
1085
1086 int libertas_set_regiontable(wlan_private * priv, u8 region, u8 band)
1087 {
1088         wlan_adapter *adapter = priv->adapter;
1089         int ret = 0;
1090         int i = 0;
1091
1092         struct chan_freq_power *cfp;
1093         int cfp_no;
1094
1095         lbs_deb_enter(LBS_DEB_MAIN);
1096
1097         memset(adapter->region_channel, 0, sizeof(adapter->region_channel));
1098
1099         {
1100                 cfp = libertas_get_region_cfp_table(region, band, &cfp_no);
1101                 if (cfp != NULL) {
1102                         adapter->region_channel[i].nrcfp = cfp_no;
1103                         adapter->region_channel[i].CFP = cfp;
1104                 } else {
1105                         lbs_deb_main("wrong region code %#x in band B/G\n",
1106                                region);
1107                         ret = -1;
1108                         goto out;
1109                 }
1110                 adapter->region_channel[i].valid = 1;
1111                 adapter->region_channel[i].region = region;
1112                 adapter->region_channel[i].band = band;
1113                 i++;
1114         }
1115 out:
1116         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1117         return ret;
1118 }
1119
1120 /**
1121  *  @brief This function handles the interrupt. it will change PS
1122  *  state if applicable. it will wake up main_thread to handle
1123  *  the interrupt event as well.
1124  *
1125  *  @param dev     A pointer to net_device structure
1126  *  @return        n/a
1127  */
1128 void libertas_interrupt(struct net_device *dev)
1129 {
1130         wlan_private *priv = dev->priv;
1131
1132         lbs_deb_enter(LBS_DEB_THREAD);
1133
1134         lbs_deb_thread("libertas_interrupt: intcounter=%d\n",
1135                priv->adapter->intcounter);
1136
1137         priv->adapter->intcounter++;
1138
1139         if (priv->adapter->psstate == PS_STATE_SLEEP) {
1140                 priv->adapter->psstate = PS_STATE_AWAKE;
1141                 netif_wake_queue(dev);
1142         }
1143
1144         wake_up_interruptible(&priv->mainthread.waitq);
1145
1146         lbs_deb_leave(LBS_DEB_THREAD);
1147 }
1148
1149 static int wlan_init_module(void)
1150 {
1151         int ret = 0;
1152
1153         lbs_deb_enter(LBS_DEB_MAIN);
1154
1155         if (libertas_fw_name == NULL) {
1156                 libertas_fw_name = default_fw_name;
1157         }
1158
1159         libertas_debugfs_init();
1160
1161         if (libertas_sbi_register()) {
1162                 ret = -1;
1163                 libertas_debugfs_remove();
1164         }
1165
1166         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1167         return ret;
1168 }
1169
1170 static void wlan_cleanup_module(void)
1171 {
1172         int i;
1173
1174         lbs_deb_enter(LBS_DEB_MAIN);
1175
1176         for (i = 0; i<libertas_found; i++) {
1177                 wlan_private *priv = libertas_devs[i]->priv;
1178                 reset_device(priv);
1179         }
1180
1181         libertas_sbi_unregister();
1182         libertas_debugfs_remove();
1183
1184         lbs_deb_leave(LBS_DEB_MAIN);
1185 }
1186
1187 module_init(wlan_init_module);
1188 module_exit(wlan_cleanup_module);
1189
1190 MODULE_DESCRIPTION("M-WLAN Driver");
1191 MODULE_AUTHOR("Marvell International Ltd.");
1192 MODULE_LICENSE("GPL");