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
  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 static u8 *default_fw_name = "usb8388.bin";
 177
 178 /**
 179  * Attributes exported through sysfs
 180  */
 181
 182 /**
 183  * @brief Get function for sysfs attribute libertas_mpp
 184  */
 185 static ssize_t libertas_mpp_get(struct device * dev,
 186                 struct device_attribute *attr, char * buf) {
 187         struct cmd_ds_mesh_access mesh_access;
 188
 189         memset(&mesh_access, 0, sizeof(mesh_access));
 190         libertas_prepare_and_send_command(to_net_dev(dev)->priv,
 191                         cmd_mesh_access,
 192                         cmd_act_mesh_get_mpp,
 193                         cmd_option_waitforrsp, 0, (void *)&mesh_access);
 194
 195         return snprintf(buf, 3, "%d\n", mesh_access.data[0]);
 196 }
 197
 198 /**
 199  * @brief Set function for sysfs attribute libertas_mpp
 200  */
 201 static ssize_t libertas_mpp_set(struct device * dev,
 202                 struct device_attribute *attr, const char * buf, size_t count) {
 203         struct cmd_ds_mesh_access mesh_access;
 204
 205         memset(&mesh_access, 0, sizeof(mesh_access));
 206         sscanf(buf, "%d", &(mesh_access.data[0]));
 207         libertas_prepare_and_send_command((to_net_dev(dev))->priv,
 208                         cmd_mesh_access,
 209                         cmd_act_mesh_set_mpp,
 210                         cmd_option_waitforrsp, 0, (void *)&mesh_access);
 211         return strlen(buf);
 212 }
 213
 214 /**
 215  * libertas_mpp attribute to be exported per mshX interface
 216  * through sysfs (/sys/class/net/mshX/libertas-mpp)
 217  */
 218 static DEVICE_ATTR(libertas_mpp, 0644, libertas_mpp_get,
 219                 libertas_mpp_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->wlan_dev.netdev);
 267                 netif_carrier_on(priv->mesh_dev);
 268         } else {
 269                 netif_carrier_off(priv->wlan_dev.netdev);
 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->wlan_dev.netdev) ;
 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->wlan_dev.netdev);
 309         if (priv->open == 0)
 310                 return wlan_dev_open(priv->wlan_dev.netdev) ;
 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->wlan_dev.netdev);
 321         netif_carrier_off(priv->mesh_dev);
 322         priv->open = 0;
 323
 324         lbs_deb_leave(LBS_DEB_NET);
 325         return 0;
 326 }
 327
 328 /**
 329  *  @brief This function closes the mshX interface
 330  *
 331  *  @param dev     A pointer to net_device structure
 332  *  @return        0
 333  */
 334 static int mesh_close(struct net_device *dev)
 335 {
 336         wlan_private *priv = (wlan_private *) (dev->priv);
 337
 338         priv->mesh_open = 0;
 339         netif_stop_queue(priv->mesh_dev);
 340         if (priv->infra_open == 0)
 341                 return wlan_dev_close( ((wlan_private *) dev->priv)->wlan_dev.netdev) ;
 342         else
 343                 return 0;
 344 }
 345
 346 /**
 347  *  @brief This function closes the ethX interface
 348  *
 349  *  @param dev     A pointer to net_device structure
 350  *  @return        0
 351  */
 352 static int wlan_close(struct net_device *dev)
 353 {
 354         wlan_private *priv = (wlan_private *) dev->priv;
 355
 356         netif_stop_queue(priv->wlan_dev.netdev);
 357         priv->infra_open = 0;
 358         if (priv->mesh_open == 0)
 359                 return wlan_dev_close( ((wlan_private *) dev->priv)->wlan_dev.netdev) ;
 360         else
 361                 return 0;
 362 }
 363
 364
 365 static int wlan_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 366 {
 367         int ret = 0;
 368         wlan_private *priv = dev->priv;
 369
 370         lbs_deb_enter(LBS_DEB_NET);
 371
 372         if (priv->wlan_dev.dnld_sent || priv->adapter->TxLockFlag) {
 373                 priv->stats.tx_dropped++;
 374                 goto done;
 375         }
 376
 377         netif_stop_queue(priv->wlan_dev.netdev);
 378         netif_stop_queue(priv->mesh_dev);
 379
 380         if (libertas_process_tx(priv, skb) == 0)
 381                 dev->trans_start = jiffies;
 382 done:
 383         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 384         return ret;
 385 }
 386
 387 /**
 388  * @brief Mark mesh packets and handover them to wlan_hard_start_xmit
 389  *
 390  */
 391 static int mesh_pre_start_xmit(struct sk_buff *skb, struct net_device *dev)
 392 {
 393         wlan_private *priv = dev->priv;
 394         int ret;
 395
 396         lbs_deb_enter(LBS_DEB_MESH);
 397
 398         SET_MESH_FRAME(skb);
 399
 400         ret = wlan_hard_start_xmit(skb, priv->wlan_dev.netdev);
 401         lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
 402         return ret;
 403 }
 404
 405 /**
 406  * @brief Mark non-mesh packets and handover them to wlan_hard_start_xmit
 407  *
 408  */
 409 static int wlan_pre_start_xmit(struct sk_buff *skb, struct net_device *dev)
 410 {
 411         int ret;
 412
 413         lbs_deb_enter(LBS_DEB_NET);
 414
 415         UNSET_MESH_FRAME(skb);
 416
 417         ret = wlan_hard_start_xmit(skb, dev);
 418         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 419         return ret;
 420 }
 421
 422 static void wlan_tx_timeout(struct net_device *dev)
 423 {
 424         wlan_private *priv = (wlan_private *) dev->priv;
 425
 426         lbs_deb_enter(LBS_DEB_TX);
 427
 428         lbs_pr_err("tx watch dog timeout\n");
 429
 430         priv->wlan_dev.dnld_sent = DNLD_RES_RECEIVED;
 431         dev->trans_start = jiffies;
 432
 433         if (priv->adapter->currenttxskb) {
 434                 if (priv->adapter->radiomode == WLAN_RADIOMODE_RADIOTAP) {
 435                         /* If we are here, we have not received feedback from
 436                            the previous packet.  Assume TX_FAIL and move on. */
 437                         priv->adapter->eventcause = 0x01000000;
 438                         libertas_send_tx_feedback(priv);
 439                 } else
 440                         wake_up_interruptible(&priv->mainthread.waitq);
 441         } else if (priv->adapter->connect_status == libertas_connected) {
 442                 netif_wake_queue(priv->wlan_dev.netdev);
 443                 netif_wake_queue(priv->mesh_dev);
 444         }
 445
 446         lbs_deb_leave(LBS_DEB_TX);
 447 }
 448
 449 /**
 450  *  @brief This function returns the network statistics
 451  *
 452  *  @param dev     A pointer to wlan_private structure
 453  *  @return        A pointer to net_device_stats structure
 454  */
 455 static struct net_device_stats *wlan_get_stats(struct net_device *dev)
 456 {
 457         wlan_private *priv = (wlan_private *) dev->priv;
 458
 459         return &priv->stats;
 460 }
 461
 462 static int wlan_set_mac_address(struct net_device *dev, void *addr)
 463 {
 464         int ret = 0;
 465         wlan_private *priv = (wlan_private *) dev->priv;
 466         wlan_adapter *adapter = priv->adapter;
 467         struct sockaddr *phwaddr = addr;
 468
 469         lbs_deb_enter(LBS_DEB_NET);
 470
 471         memset(adapter->current_addr, 0, ETH_ALEN);
 472
 473         /* dev->dev_addr is 8 bytes */
 474         lbs_dbg_hex("dev->dev_addr:", dev->dev_addr, ETH_ALEN);
 475
 476         lbs_dbg_hex("addr:", phwaddr->sa_data, ETH_ALEN);
 477         memcpy(adapter->current_addr, phwaddr->sa_data, ETH_ALEN);
 478
 479         ret = libertas_prepare_and_send_command(priv, cmd_802_11_mac_address,
 480                                     cmd_act_set,
 481                                     cmd_option_waitforrsp, 0, NULL);
 482
 483         if (ret) {
 484                 lbs_deb_net("set MAC address failed\n");
 485                 ret = -1;
 486                 goto done;
 487         }
 488
 489         lbs_dbg_hex("adapter->macaddr:", adapter->current_addr, ETH_ALEN);
 490         memcpy(dev->dev_addr, adapter->current_addr, ETH_ALEN);
 491         if (priv->mesh_dev)
 492                 memcpy(priv->mesh_dev->dev_addr, adapter->current_addr, ETH_ALEN);
 493
 494 done:
 495         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 496         return ret;
 497 }
 498
 499 static int wlan_copy_multicast_address(wlan_adapter * adapter,
 500                                      struct net_device *dev)
 501 {
 502         int i = 0;
 503         struct dev_mc_list *mcptr = dev->mc_list;
 504
 505         for (i = 0; i < dev->mc_count; i++) {
 506                 memcpy(&adapter->multicastlist[i], mcptr->dmi_addr, ETH_ALEN);
 507                 mcptr = mcptr->next;
 508         }
 509
 510         return i;
 511
 512 }
 513
 514 static void wlan_set_multicast_list(struct net_device *dev)
 515 {
 516         wlan_private *priv = dev->priv;
 517         wlan_adapter *adapter = priv->adapter;
 518         int oldpacketfilter;
 519
 520         lbs_deb_enter(LBS_DEB_NET);
 521
 522         oldpacketfilter = adapter->currentpacketfilter;
 523
 524         if (dev->flags & IFF_PROMISC) {
 525                 lbs_deb_net("enable promiscuous mode\n");
 526                 adapter->currentpacketfilter |=
 527                     cmd_act_mac_promiscuous_enable;
 528                 adapter->currentpacketfilter &=
 529                     ~(cmd_act_mac_all_multicast_enable |
 530                       cmd_act_mac_multicast_enable);
 531         } else {
 532                 /* Multicast */
 533                 adapter->currentpacketfilter &=
 534                     ~cmd_act_mac_promiscuous_enable;
 535
 536                 if (dev->flags & IFF_ALLMULTI || dev->mc_count >
 537                     MRVDRV_MAX_MULTICAST_LIST_SIZE) {
 538                         lbs_deb_net( "enabling all multicast\n");
 539                         adapter->currentpacketfilter |=
 540                             cmd_act_mac_all_multicast_enable;
 541                         adapter->currentpacketfilter &=
 542                             ~cmd_act_mac_multicast_enable;
 543                 } else {
 544                         adapter->currentpacketfilter &=
 545                             ~cmd_act_mac_all_multicast_enable;
 546
 547                         if (!dev->mc_count) {
 548                                 lbs_deb_net("no multicast addresses, "
 549                                        "disabling multicast\n");
 550                                 adapter->currentpacketfilter &=
 551                                     ~cmd_act_mac_multicast_enable;
 552                         } else {
 553                                 int i;
 554
 555                                 adapter->currentpacketfilter |=
 556                                     cmd_act_mac_multicast_enable;
 557
 558                                 adapter->nr_of_multicastmacaddr =
 559                                     wlan_copy_multicast_address(adapter, dev);
 560
 561                                 lbs_deb_net("multicast addresses: %d\n",
 562                                        dev->mc_count);
 563
 564                                 for (i = 0; i < dev->mc_count; i++) {
 565                                         lbs_deb_net("Multicast address %d:"
 566                                                MAC_FMT "\n", i,
 567                                                adapter->multicastlist[i][0],
 568                                                adapter->multicastlist[i][1],
 569                                                adapter->multicastlist[i][2],
 570                                                adapter->multicastlist[i][3],
 571                                                adapter->multicastlist[i][4],
 572                                                adapter->multicastlist[i][5]);
 573                                 }
 574                                 /* send multicast addresses to firmware */
 575                                 libertas_prepare_and_send_command(priv,
 576                                                       cmd_mac_multicast_adr,
 577                                                       cmd_act_set, 0, 0,
 578                                                       NULL);
 579                         }
 580                 }
 581         }
 582
 583         if (adapter->currentpacketfilter != oldpacketfilter) {
 584                 libertas_set_mac_packet_filter(priv);
 585         }
 586
 587         lbs_deb_leave(LBS_DEB_NET);
 588 }
 589
 590 /**
 591  *  @brief This function handles the major jobs in the WLAN driver.
 592  *  It handles all events generated by firmware, RX data received
 593  *  from firmware and TX data sent from kernel.
 594  *
 595  *  @param data    A pointer to wlan_thread structure
 596  *  @return        0
 597  */
 598 static int wlan_service_main_thread(void *data)
 599 {
 600         struct wlan_thread *thread = data;
 601         wlan_private *priv = thread->priv;
 602         wlan_adapter *adapter = priv->adapter;
 603         wait_queue_t wait;
 604         u8 ireg = 0;
 605
 606         lbs_deb_enter(LBS_DEB_THREAD);
 607
 608         wlan_activate_thread(thread);
 609
 610         init_waitqueue_entry(&wait, current);
 611
 612         for (;;) {
 613                 lbs_deb_thread( "main-thread 111: intcounter=%d "
 614                        "currenttxskb=%p dnld_sent=%d\n",
 615                        adapter->intcounter,
 616                        adapter->currenttxskb, priv->wlan_dev.dnld_sent);
 617
 618                 add_wait_queue(&thread->waitq, &wait);
 619                 set_current_state(TASK_INTERRUPTIBLE);
 620                 spin_lock_irq(&adapter->driver_lock);
 621                 if ((adapter->psstate == PS_STATE_SLEEP) ||
 622                     (!adapter->intcounter
 623                      && (priv->wlan_dev.dnld_sent || adapter->cur_cmd ||
 624                          list_empty(&adapter->cmdpendingq)))) {
 625                         lbs_deb_thread(
 626                                "main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
 627                                adapter->connect_status, adapter->intcounter,
 628                                adapter->psmode, adapter->psstate);
 629                         spin_unlock_irq(&adapter->driver_lock);
 630                         schedule();
 631                 } else
 632                         spin_unlock_irq(&adapter->driver_lock);
 633
 634
 635                 lbs_deb_thread(
 636                        "main-thread 222 (waking up): intcounter=%d currenttxskb=%p "
 637                        "dnld_sent=%d\n", adapter->intcounter,
 638                        adapter->currenttxskb, priv->wlan_dev.dnld_sent);
 639
 640                 set_current_state(TASK_RUNNING);
 641                 remove_wait_queue(&thread->waitq, &wait);
 642                 try_to_freeze();
 643
 644                 lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p "
 645                        "dnld_sent=%d\n",
 646                        adapter->intcounter,
 647                        adapter->currenttxskb, priv->wlan_dev.dnld_sent);
 648
 649                 if (kthread_should_stop()
 650                     || adapter->surpriseremoved) {
 651                         lbs_deb_thread(
 652                                "main-thread: break from main thread: surpriseremoved=0x%x\n",
 653                                adapter->surpriseremoved);
 654                         break;
 655                 }
 656
 657
 658                 spin_lock_irq(&adapter->driver_lock);
 659                 if (adapter->intcounter) {
 660                         u8 int_status;
 661                         adapter->intcounter = 0;
 662                         int_status = priv->hw_get_int_status(priv, &ireg);
 663
 664                         if (int_status) {
 665                                 lbs_deb_thread(
 666                                        "main-thread: reading HOST_INT_STATUS_REG failed\n");
 667                                 spin_unlock_irq(&adapter->driver_lock);
 668                                 continue;
 669                         }
 670                         adapter->hisregcpy |= ireg;
 671                 }
 672
 673                 lbs_deb_thread("main-thread 444: intcounter=%d currenttxskb=%p "
 674                        "dnld_sent=%d\n",
 675                        adapter->intcounter,
 676                        adapter->currenttxskb, priv->wlan_dev.dnld_sent);
 677
 678                 /* command response? */
 679                 if (adapter->hisregcpy & his_cmdupldrdy) {
 680                         lbs_deb_thread("main-thread: cmd response ready\n");
 681
 682                         adapter->hisregcpy &= ~his_cmdupldrdy;
 683                         spin_unlock_irq(&adapter->driver_lock);
 684                         libertas_process_rx_command(priv);
 685                         spin_lock_irq(&adapter->driver_lock);
 686                 }
 687
 688                 /* Any Card Event */
 689                 if (adapter->hisregcpy & his_cardevent) {
 690                         lbs_deb_thread("main-thread: Card Event Activity\n");
 691
 692                         adapter->hisregcpy &= ~his_cardevent;
 693
 694                         if (priv->hw_read_event_cause(priv)) {
 695                                 lbs_pr_alert(
 696                                        "main-thread: hw_read_event_cause failed\n");
 697                                 spin_unlock_irq(&adapter->driver_lock);
 698                                 continue;
 699                         }
 700                         spin_unlock_irq(&adapter->driver_lock);
 701                         libertas_process_event(priv);
 702                 } else
 703                         spin_unlock_irq(&adapter->driver_lock);
 704
 705                 /* Check if we need to confirm Sleep Request received previously */
 706                 if (adapter->psstate == PS_STATE_PRE_SLEEP) {
 707                         if (!priv->wlan_dev.dnld_sent && !adapter->cur_cmd) {
 708                                 if (adapter->connect_status ==
 709                                     libertas_connected) {
 710                                         lbs_deb_thread(
 711                                                "main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p "
 712                                                "dnld_sent=%d cur_cmd=%p, confirm now\n",
 713                                                adapter->intcounter,
 714                                                adapter->currenttxskb,
 715                                                priv->wlan_dev.dnld_sent,
 716                                                adapter->cur_cmd);
 717
 718                                         libertas_ps_confirm_sleep(priv,
 719                                                        (u16) adapter->psmode);
 720                                 } else {
 721                                         /* workaround for firmware sending
 722                                          * deauth/linkloss event immediately
 723                                          * after sleep request, remove this
 724                                          * after firmware fixes it
 725                                          */
 726                                         adapter->psstate = PS_STATE_AWAKE;
 727                                         lbs_pr_alert(
 728                                                "main-thread: ignore PS_SleepConfirm in non-connected state\n");
 729                                 }
 730                         }
 731                 }
 732
 733                 /* The PS state is changed during processing of Sleep Request
 734                  * event above
 735                  */
 736                 if ((priv->adapter->psstate == PS_STATE_SLEEP) ||
 737                     (priv->adapter->psstate == PS_STATE_PRE_SLEEP))
 738                         continue;
 739
 740                 /* Execute the next command */
 741                 if (!priv->wlan_dev.dnld_sent && !priv->adapter->cur_cmd)
 742                         libertas_execute_next_command(priv);
 743
 744                 /* Wake-up command waiters which can't sleep in
 745                  * libertas_prepare_and_send_command
 746                  */
 747                 if (!adapter->nr_cmd_pending)
 748                         wake_up_all(&adapter->cmd_pending);
 749
 750                 libertas_tx_runqueue(priv);
 751         }
 752
 753         del_timer(&adapter->command_timer);
 754         adapter->nr_cmd_pending = 0;
 755         wake_up_all(&adapter->cmd_pending);
 756         wlan_deactivate_thread(thread);
 757
 758         lbs_deb_leave(LBS_DEB_THREAD);
 759         return 0;
 760 }
 761
 762 /**
 763  * @brief This function adds the card. it will probe the
 764  * card, allocate the wlan_priv and initialize the device.
 765  *
 766  *  @param card    A pointer to card
 767  *  @return        A pointer to wlan_private structure
 768  */
 769 wlan_private *wlan_add_card(void *card)
 770 {
 771         struct net_device *dev = NULL;
 772         wlan_private *priv = NULL;
 773
 774         lbs_deb_enter(LBS_DEB_NET);
 775
 776         /* Allocate an Ethernet device and register it */
 777         if (!(dev = alloc_etherdev(sizeof(wlan_private)))) {
 778                 lbs_pr_err("init ethX device failed\n");
 779                 return NULL;
 780         }
 781         priv = dev->priv;
 782
 783         /* allocate buffer for wlan_adapter */
 784         if (!(priv->adapter = kzalloc(sizeof(wlan_adapter), GFP_KERNEL))) {
 785                 lbs_pr_err("allocate buffer for wlan_adapter failed\n");
 786                 goto err_kzalloc;
 787         }
 788
 789         priv->wlan_dev.netdev = dev;
 790         priv->wlan_dev.card = card;
 791         priv->mesh_open = 0;
 792         priv->infra_open = 0;
 793
 794         SET_MODULE_OWNER(dev);
 795
 796         /* Setup the OS Interface to our functions */
 797         dev->open = wlan_open;
 798         dev->hard_start_xmit = wlan_pre_start_xmit;
 799         dev->stop = wlan_close;
 800         dev->do_ioctl = libertas_do_ioctl;
 801         dev->set_mac_address = wlan_set_mac_address;
 802         dev->tx_timeout = wlan_tx_timeout;
 803         dev->get_stats = wlan_get_stats;
 804         dev->watchdog_timeo = 5 * HZ;
 805         dev->ethtool_ops = &libertas_ethtool_ops;
 806 #ifdef  WIRELESS_EXT
 807         dev->wireless_handlers = (struct iw_handler_def *)&libertas_handler_def;
 808 #endif
 809 #define NETIF_F_DYNALLOC 16
 810         dev->features |= NETIF_F_DYNALLOC;
 811         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
 812         dev->set_multicast_list = wlan_set_multicast_list;
 813
 814         INIT_LIST_HEAD(&priv->adapter->cmdfreeq);
 815         INIT_LIST_HEAD(&priv->adapter->cmdpendingq);
 816
 817         spin_lock_init(&priv->adapter->driver_lock);
 818         init_waitqueue_head(&priv->adapter->cmd_pending);
 819         priv->adapter->nr_cmd_pending = 0;
 820         goto done;
 821
 822 err_kzalloc:
 823         free_netdev(dev);
 824         priv = NULL;
 825 done:
 826         lbs_deb_leave_args(LBS_DEB_NET, "priv %p", priv);
 827         return priv;
 828 }
 829
 830 int libertas_activate_card(wlan_private *priv)
 831 {
 832         struct net_device *dev = priv->wlan_dev.netdev;
 833         int ret = -1;
 834
 835         lbs_deb_enter(LBS_DEB_MAIN);
 836
 837         lbs_deb_thread("Starting kthread...\n");
 838         priv->mainthread.priv = priv;
 839         wlan_create_thread(wlan_service_main_thread,
 840                            &priv->mainthread, "wlan_main_service");
 841
 842         priv->assoc_thread =
 843                 create_singlethread_workqueue("libertas_assoc");
 844         INIT_DELAYED_WORK(&priv->assoc_work, libertas_association_worker);
 845
 846         /*
 847          * Register the device. Fillup the private data structure with
 848          * relevant information from the card and request for the required
 849          * IRQ.
 850          */
 851         if (priv->hw_register_dev(priv) < 0) {
 852                 lbs_pr_err("failed to register WLAN device\n");
 853                 goto err_registerdev;
 854         }
 855
 856         /* init FW and HW */
 857         if (libertas_init_fw(priv)) {
 858                 lbs_pr_err("firmware init failed\n");
 859                 goto err_registerdev;
 860         }
 861
 862         if (register_netdev(dev)) {
 863                 lbs_pr_err("cannot register ethX device\n");
 864                 goto err_init_fw;
 865         }
 866
 867         lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
 868
 869         libertas_debugfs_init_one(priv, dev);
 870
 871         ret = 0;
 872         goto done;
 873
 874 err_init_fw:
 875         priv->hw_unregister_dev(priv);
 876 err_registerdev:
 877         destroy_workqueue(priv->assoc_thread);
 878         /* Stop the thread servicing the interrupts */
 879         wake_up_interruptible(&priv->mainthread.waitq);
 880         wlan_terminate_thread(&priv->mainthread);
 881         kfree(priv->adapter);
 882         free_netdev(dev);
 883 done:
 884         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 885         return ret;
 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 wlan_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->wlan_dev.netdev->dev_addr,
 919                         sizeof(priv->wlan_dev.netdev->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
 953 static void wake_pending_cmdnodes(wlan_private *priv)
 954 {
 955         struct cmd_ctrl_node *cmdnode;
 956         unsigned long flags;
 957
 958         lbs_deb_enter(LBS_DEB_CMD);
 959
 960         spin_lock_irqsave(&priv->adapter->driver_lock, flags);
 961         list_for_each_entry(cmdnode, &priv->adapter->cmdpendingq, list) {
 962                 cmdnode->cmdwaitqwoken = 1;
 963                 wake_up_interruptible(&cmdnode->cmdwait_q);
 964         }
 965         spin_unlock_irqrestore(&priv->adapter->driver_lock, flags);
 966 }
 967
 968
 969 int wlan_remove_card(wlan_private *priv)
 970 {
 971         wlan_adapter *adapter;
 972         struct net_device *dev;
 973         union iwreq_data wrqu;
 974
 975         lbs_deb_enter(LBS_DEB_NET);
 976
 977         if (!priv)
 978                 goto out;
 979
 980         adapter = priv->adapter;
 981
 982         if (!adapter)
 983                 goto out;
 984
 985         dev = priv->wlan_dev.netdev;
 986
 987         netif_stop_queue(priv->wlan_dev.netdev);
 988         netif_carrier_off(priv->wlan_dev.netdev);
 989
 990         wake_pending_cmdnodes(priv);
 991
 992         unregister_netdev(dev);
 993
 994         cancel_delayed_work(&priv->assoc_work);
 995         destroy_workqueue(priv->assoc_thread);
 996
 997         if (adapter->psmode == wlan802_11powermodemax_psp) {
 998                 adapter->psmode = wlan802_11powermodecam;
 999                 libertas_ps_wakeup(priv, cmd_option_waitforrsp);
1000         }
1001
1002         memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1003         wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1004         wireless_send_event(priv->wlan_dev.netdev, SIOCGIWAP, &wrqu, NULL);
1005
1006         adapter->surpriseremoved = 1;
1007
1008         /* Stop the thread servicing the interrupts */
1009         wlan_terminate_thread(&priv->mainthread);
1010
1011         libertas_debugfs_remove_one(priv);
1012
1013         lbs_deb_net("free adapter\n");
1014         libertas_free_adapter(priv);
1015
1016         lbs_deb_net("unregister finish\n");
1017
1018         priv->wlan_dev.netdev = NULL;
1019         free_netdev(dev);
1020
1021 out:
1022         lbs_deb_leave(LBS_DEB_NET);
1023         return 0;
1024 }
1025
1026 void wlan_remove_mesh(wlan_private *priv)
1027 {
1028         struct net_device *mesh_dev;
1029
1030         lbs_deb_enter(LBS_DEB_NET);
1031
1032         if (!priv)
1033                 goto out;
1034
1035         mesh_dev = priv->mesh_dev;
1036
1037         netif_stop_queue(mesh_dev);
1038         netif_carrier_off(priv->mesh_dev);
1039
1040         device_remove_file(&(mesh_dev->dev), &dev_attr_libertas_mpp);
1041         unregister_netdev(mesh_dev);
1042
1043         priv->mesh_dev = NULL ;
1044         free_netdev(mesh_dev);
1045
1046 out:
1047         lbs_deb_leave(LBS_DEB_NET);
1048 }
1049
1050 /**
1051  *  @brief This function finds the CFP in
1052  *  region_cfp_table based on region and band parameter.
1053  *
1054  *  @param region  The region code
1055  *  @param band    The band
1056  *  @param cfp_no  A pointer to CFP number
1057  *  @return        A pointer to CFP
1058  */
1059 struct chan_freq_power *libertas_get_region_cfp_table(u8 region, u8 band, int *cfp_no)
1060 {
1061         int i, end;
1062
1063         lbs_deb_enter(LBS_DEB_MAIN);
1064
1065         end = sizeof(region_cfp_table)/sizeof(struct region_cfp_table);
1066
1067         for (i = 0; i < end ; i++) {
1068                 lbs_deb_main("region_cfp_table[i].region=%d\n",
1069                         region_cfp_table[i].region);
1070                 if (region_cfp_table[i].region == region) {
1071                         *cfp_no = region_cfp_table[i].cfp_no_BG;
1072                         lbs_deb_leave(LBS_DEB_MAIN);
1073                         return region_cfp_table[i].cfp_BG;
1074                 }
1075         }
1076
1077         lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1078         return NULL;
1079 }
1080
1081 int libertas_set_regiontable(wlan_private * priv, u8 region, u8 band)
1082 {
1083         wlan_adapter *adapter = priv->adapter;
1084         int ret = 0;
1085         int i = 0;
1086
1087         struct chan_freq_power *cfp;
1088         int cfp_no;
1089
1090         lbs_deb_enter(LBS_DEB_MAIN);
1091
1092         memset(adapter->region_channel, 0, sizeof(adapter->region_channel));
1093
1094         {
1095                 cfp = libertas_get_region_cfp_table(region, band, &cfp_no);
1096                 if (cfp != NULL) {
1097                         adapter->region_channel[i].nrcfp = cfp_no;
1098                         adapter->region_channel[i].CFP = cfp;
1099                 } else {
1100                         lbs_deb_main("wrong region code %#x in band B/G\n",
1101                                region);
1102                         ret = -1;
1103                         goto out;
1104                 }
1105                 adapter->region_channel[i].valid = 1;
1106                 adapter->region_channel[i].region = region;
1107                 adapter->region_channel[i].band = band;
1108                 i++;
1109         }
1110 out:
1111         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1112         return ret;
1113 }
1114
1115 /**
1116  *  @brief This function handles the interrupt. it will change PS
1117  *  state if applicable. it will wake up main_thread to handle
1118  *  the interrupt event as well.
1119  *
1120  *  @param dev     A pointer to net_device structure
1121  *  @return        n/a
1122  */
1123 void libertas_interrupt(struct net_device *dev)
1124 {
1125         wlan_private *priv = dev->priv;
1126
1127         lbs_deb_enter(LBS_DEB_THREAD);
1128
1129         lbs_deb_thread("libertas_interrupt: intcounter=%d\n",
1130                priv->adapter->intcounter);
1131
1132         priv->adapter->intcounter++;
1133
1134         if (priv->adapter->psstate == PS_STATE_SLEEP) {
1135                 priv->adapter->psstate = PS_STATE_AWAKE;
1136                 netif_wake_queue(dev);
1137                 netif_wake_queue(priv->mesh_dev);
1138         }
1139
1140         wake_up_interruptible(&priv->mainthread.waitq);
1141
1142         lbs_deb_leave(LBS_DEB_THREAD);
1143 }
1144
1145 static int wlan_init_module(void)
1146 {
1147         int ret = 0;
1148
1149         lbs_deb_enter(LBS_DEB_MAIN);
1150
1151         if (libertas_fw_name == NULL) {
1152                 libertas_fw_name = default_fw_name;
1153         }
1154
1155         libertas_debugfs_init();
1156
1157         if (if_usb_register()) {
1158                 ret = -1;
1159                 libertas_debugfs_remove();
1160         }
1161
1162         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1163         return ret;
1164 }
1165
1166 static void wlan_cleanup_module(void)
1167 {
1168         lbs_deb_enter(LBS_DEB_MAIN);
1169
1170         if_usb_unregister();
1171         libertas_debugfs_remove();
1172
1173         lbs_deb_leave(LBS_DEB_MAIN);
1174 }
1175
1176 module_init(wlan_init_module);
1177 module_exit(wlan_cleanup_module);
1178
1179 MODULE_DESCRIPTION("M-WLAN Driver");
1180 MODULE_AUTHOR("Marvell International Ltd.");
1181 MODULE_LICENSE("GPL");