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