git.oblomov.eu Git - linux-2.6/blob - drivers/net/wireless/libertas/main.c

   1 /**
   2   * This file contains the major functions in WLAN
   3   * driver. It includes init, exit, open, close and main
   4   * thread etc..
   5   */
   6
   7 #include <linux/moduleparam.h>
   8 #include <linux/delay.h>
   9 #include <linux/freezer.h>
  10 #include <linux/etherdevice.h>
  11 #include <linux/netdevice.h>
  12 #include <linux/if_arp.h>
  13 #include <linux/kthread.h>
  14
  15 #include <net/iw_handler.h>
  16 #include <net/ieee80211.h>
  17
  18 #include "host.h"
  19 #include "decl.h"
  20 #include "dev.h"
  21 #include "wext.h"
  22 #include "debugfs.h"
  23 #include "assoc.h"
  24
  25 #define DRIVER_RELEASE_VERSION "322.p1"
  26 const char libertas_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
  27 #ifdef  DEBUG
  28     "-dbg"
  29 #endif
  30     "";
  31
  32
  33 /* Module parameters */
  34 unsigned int libertas_debug = 0;
  35 module_param(libertas_debug, int, 0644);
  36 EXPORT_SYMBOL_GPL(libertas_debug);
  37
  38
  39 #define WLAN_TX_PWR_DEFAULT             20      /*100mW */
  40 #define WLAN_TX_PWR_US_DEFAULT          20      /*100mW */
  41 #define WLAN_TX_PWR_JP_DEFAULT          16      /*50mW */
  42 #define WLAN_TX_PWR_FR_DEFAULT          20      /*100mW */
  43 #define WLAN_TX_PWR_EMEA_DEFAULT        20      /*100mW */
  44
  45 /* Format { channel, frequency (MHz), maxtxpower } */
  46 /* band: 'B/G', region: USA FCC/Canada IC */
  47 static struct chan_freq_power channel_freq_power_US_BG[] = {
  48         {1, 2412, WLAN_TX_PWR_US_DEFAULT},
  49         {2, 2417, WLAN_TX_PWR_US_DEFAULT},
  50         {3, 2422, WLAN_TX_PWR_US_DEFAULT},
  51         {4, 2427, WLAN_TX_PWR_US_DEFAULT},
  52         {5, 2432, WLAN_TX_PWR_US_DEFAULT},
  53         {6, 2437, WLAN_TX_PWR_US_DEFAULT},
  54         {7, 2442, WLAN_TX_PWR_US_DEFAULT},
  55         {8, 2447, WLAN_TX_PWR_US_DEFAULT},
  56         {9, 2452, WLAN_TX_PWR_US_DEFAULT},
  57         {10, 2457, WLAN_TX_PWR_US_DEFAULT},
  58         {11, 2462, WLAN_TX_PWR_US_DEFAULT}
  59 };
  60
  61 /* band: 'B/G', region: Europe ETSI */
  62 static struct chan_freq_power channel_freq_power_EU_BG[] = {
  63         {1, 2412, WLAN_TX_PWR_EMEA_DEFAULT},
  64         {2, 2417, WLAN_TX_PWR_EMEA_DEFAULT},
  65         {3, 2422, WLAN_TX_PWR_EMEA_DEFAULT},
  66         {4, 2427, WLAN_TX_PWR_EMEA_DEFAULT},
  67         {5, 2432, WLAN_TX_PWR_EMEA_DEFAULT},
  68         {6, 2437, WLAN_TX_PWR_EMEA_DEFAULT},
  69         {7, 2442, WLAN_TX_PWR_EMEA_DEFAULT},
  70         {8, 2447, WLAN_TX_PWR_EMEA_DEFAULT},
  71         {9, 2452, WLAN_TX_PWR_EMEA_DEFAULT},
  72         {10, 2457, WLAN_TX_PWR_EMEA_DEFAULT},
  73         {11, 2462, WLAN_TX_PWR_EMEA_DEFAULT},
  74         {12, 2467, WLAN_TX_PWR_EMEA_DEFAULT},
  75         {13, 2472, WLAN_TX_PWR_EMEA_DEFAULT}
  76 };
  77
  78 /* band: 'B/G', region: Spain */
  79 static struct chan_freq_power channel_freq_power_SPN_BG[] = {
  80         {10, 2457, WLAN_TX_PWR_DEFAULT},
  81         {11, 2462, WLAN_TX_PWR_DEFAULT}
  82 };
  83
  84 /* band: 'B/G', region: France */
  85 static struct chan_freq_power channel_freq_power_FR_BG[] = {
  86         {10, 2457, WLAN_TX_PWR_FR_DEFAULT},
  87         {11, 2462, WLAN_TX_PWR_FR_DEFAULT},
  88         {12, 2467, WLAN_TX_PWR_FR_DEFAULT},
  89         {13, 2472, WLAN_TX_PWR_FR_DEFAULT}
  90 };
  91
  92 /* band: 'B/G', region: Japan */
  93 static struct chan_freq_power channel_freq_power_JPN_BG[] = {
  94         {1, 2412, WLAN_TX_PWR_JP_DEFAULT},
  95         {2, 2417, WLAN_TX_PWR_JP_DEFAULT},
  96         {3, 2422, WLAN_TX_PWR_JP_DEFAULT},
  97         {4, 2427, WLAN_TX_PWR_JP_DEFAULT},
  98         {5, 2432, WLAN_TX_PWR_JP_DEFAULT},
  99         {6, 2437, WLAN_TX_PWR_JP_DEFAULT},
 100         {7, 2442, WLAN_TX_PWR_JP_DEFAULT},
 101         {8, 2447, WLAN_TX_PWR_JP_DEFAULT},
 102         {9, 2452, WLAN_TX_PWR_JP_DEFAULT},
 103         {10, 2457, WLAN_TX_PWR_JP_DEFAULT},
 104         {11, 2462, WLAN_TX_PWR_JP_DEFAULT},
 105         {12, 2467, WLAN_TX_PWR_JP_DEFAULT},
 106         {13, 2472, WLAN_TX_PWR_JP_DEFAULT},
 107         {14, 2484, WLAN_TX_PWR_JP_DEFAULT}
 108 };
 109
 110 /**
 111  * the structure for channel, frequency and power
 112  */
 113 struct region_cfp_table {
 114         u8 region;
 115         struct chan_freq_power *cfp_BG;
 116         int cfp_no_BG;
 117 };
 118
 119 /**
 120  * the structure for the mapping between region and CFP
 121  */
 122 static struct region_cfp_table region_cfp_table[] = {
 123         {0x10,                  /*US FCC */
 124          channel_freq_power_US_BG,
 125          sizeof(channel_freq_power_US_BG) / sizeof(struct chan_freq_power),
 126          }
 127         ,
 128         {0x20,                  /*CANADA IC */
 129          channel_freq_power_US_BG,
 130          sizeof(channel_freq_power_US_BG) / sizeof(struct chan_freq_power),
 131          }
 132         ,
 133         {0x30, /*EU*/ channel_freq_power_EU_BG,
 134          sizeof(channel_freq_power_EU_BG) / sizeof(struct chan_freq_power),
 135          }
 136         ,
 137         {0x31, /*SPAIN*/ channel_freq_power_SPN_BG,
 138          sizeof(channel_freq_power_SPN_BG) / sizeof(struct chan_freq_power),
 139          }
 140         ,
 141         {0x32, /*FRANCE*/ channel_freq_power_FR_BG,
 142          sizeof(channel_freq_power_FR_BG) / sizeof(struct chan_freq_power),
 143          }
 144         ,
 145         {0x40, /*JAPAN*/ channel_freq_power_JPN_BG,
 146          sizeof(channel_freq_power_JPN_BG) / sizeof(struct chan_freq_power),
 147          }
 148         ,
 149 /*Add new region here */
 150 };
 151
 152 /**
 153  * the rates supported
 154  */
 155 u8 libertas_supported_rates[G_SUPPORTED_RATES] =
 156     { 0x82, 0x84, 0x8b, 0x96, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
 157 0 };
 158
 159 /**
 160  * the rates supported for ad-hoc G mode
 161  */
 162 u8 libertas_adhoc_rates_g[G_SUPPORTED_RATES] =
 163     { 0x82, 0x84, 0x8b, 0x96, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
 164 0 };
 165
 166 /**
 167  * the rates supported for ad-hoc B mode
 168  */
 169 u8 libertas_adhoc_rates_b[4] = { 0x82, 0x84, 0x8b, 0x96 };
 170
 171 /**
 172  * the table to keep region code
 173  */
 174 u16 libertas_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
 175     { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
 176
 177 /**
 178  * Attributes exported through sysfs
 179  */
 180
 181 /**
 182  * @brief Get function for sysfs attribute anycast_mask
 183  */
 184 static ssize_t libertas_anycast_get(struct device * dev,
 185                 struct device_attribute *attr, char * buf)
 186 {
 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_ANYCAST,
 193                         CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
 194
 195         return snprintf(buf, 12, "0x%X\n", le32_to_cpu(mesh_access.data[0]));
 196 }
 197
 198 /**
 199  * @brief Set function for sysfs attribute anycast_mask
 200  */
 201 static ssize_t libertas_anycast_set(struct device * dev,
 202                 struct device_attribute *attr, const char * buf, size_t count)
 203 {
 204         struct cmd_ds_mesh_access mesh_access;
 205         uint32_t datum;
 206
 207         memset(&mesh_access, 0, sizeof(mesh_access));
 208         sscanf(buf, "%x", &datum);
 209         mesh_access.data[0] = cpu_to_le32(datum);
 210
 211         libertas_prepare_and_send_command((to_net_dev(dev))->priv,
 212                         CMD_MESH_ACCESS,
 213                         CMD_ACT_MESH_SET_ANYCAST,
 214                         CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
 215         return strlen(buf);
 216 }
 217
 218 /**
 219  * anycast_mask attribute to be exported per mshX interface
 220  * through sysfs (/sys/class/net/mshX/anycast_mask)
 221  */
 222 static DEVICE_ATTR(anycast_mask, 0644, libertas_anycast_get, libertas_anycast_set);
 223
 224 /**
 225  *  @brief Check if the device can be open and wait if necessary.
 226  *
 227  *  @param dev     A pointer to net_device structure
 228  *  @return        0
 229  *
 230  * For USB adapter, on some systems the device open handler will be
 231  * called before FW ready. Use the following flag check and wait
 232  * function to work around the issue.
 233  *
 234  */
 235 static int pre_open_check(struct net_device *dev)
 236 {
 237         wlan_private *priv = (wlan_private *) dev->priv;
 238         wlan_adapter *adapter = priv->adapter;
 239         int i = 0;
 240
 241         while (!adapter->fw_ready && i < 20) {
 242                 i++;
 243                 msleep_interruptible(100);
 244         }
 245         if (!adapter->fw_ready) {
 246                 lbs_pr_err("firmware not ready\n");
 247                 return -1;
 248         }
 249
 250         return 0;
 251 }
 252
 253 /**
 254  *  @brief This function opens the device
 255  *
 256  *  @param dev     A pointer to net_device structure
 257  *  @return        0
 258  */
 259 static int wlan_dev_open(struct net_device *dev)
 260 {
 261         wlan_private *priv = (wlan_private *) dev->priv;
 262         wlan_adapter *adapter = priv->adapter;
 263
 264         lbs_deb_enter(LBS_DEB_NET);
 265
 266         priv->open = 1;
 267
 268         if (adapter->connect_status == LIBERTAS_CONNECTED) {
 269                 netif_carrier_on(priv->dev);
 270                 netif_carrier_on(priv->mesh_dev);
 271         } else {
 272                 netif_carrier_off(priv->dev);
 273                 netif_carrier_off(priv->mesh_dev);
 274         }
 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_wake_queue(priv->mesh_dev);
 293         if (priv->infra_open == 0)
 294                 return wlan_dev_open(priv->dev) ;
 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->dev);
 312         if (priv->open == 0)
 313                 return wlan_dev_open(priv->dev) ;
 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->dev);
 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(dev);
 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(dev);
 359         priv->infra_open = 0;
 360         if (priv->mesh_open == 0)
 361                 return wlan_dev_close(dev);
 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->dnld_sent || priv->adapter->TxLockFlag) {
 375                 priv->stats.tx_dropped++;
 376                 goto done;
 377         }
 378
 379         netif_stop_queue(priv->dev);
 380         netif_stop_queue(priv->mesh_dev);
 381
 382         if (libertas_process_tx(priv, skb) == 0)
 383                 dev->trans_start = jiffies;
 384 done:
 385         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 386         return ret;
 387 }
 388
 389 /**
 390  * @brief Mark mesh packets and handover them to wlan_hard_start_xmit
 391  *
 392  */
 393 static int mesh_pre_start_xmit(struct sk_buff *skb, struct net_device *dev)
 394 {
 395         wlan_private *priv = dev->priv;
 396         int ret;
 397
 398         lbs_deb_enter(LBS_DEB_MESH);
 399
 400         SET_MESH_FRAME(skb);
 401
 402         ret = wlan_hard_start_xmit(skb, priv->dev);
 403         lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
 404         return ret;
 405 }
 406
 407 /**
 408  * @brief Mark non-mesh packets and handover them to wlan_hard_start_xmit
 409  *
 410  */
 411 static int wlan_pre_start_xmit(struct sk_buff *skb, struct net_device *dev)
 412 {
 413         int ret;
 414
 415         lbs_deb_enter(LBS_DEB_NET);
 416
 417         UNSET_MESH_FRAME(skb);
 418
 419         ret = wlan_hard_start_xmit(skb, dev);
 420         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 421         return ret;
 422 }
 423
 424 static void wlan_tx_timeout(struct net_device *dev)
 425 {
 426         wlan_private *priv = (wlan_private *) dev->priv;
 427
 428         lbs_deb_enter(LBS_DEB_TX);
 429
 430         lbs_pr_err("tx watch dog timeout\n");
 431
 432         priv->dnld_sent = DNLD_RES_RECEIVED;
 433         dev->trans_start = jiffies;
 434
 435         if (priv->adapter->currenttxskb) {
 436                 if (priv->adapter->radiomode == WLAN_RADIOMODE_RADIOTAP) {
 437                         /* If we are here, we have not received feedback from
 438                            the previous packet.  Assume TX_FAIL and move on. */
 439                         priv->adapter->eventcause = 0x01000000;
 440                         libertas_send_tx_feedback(priv);
 441                 } else
 442                         wake_up_interruptible(&priv->waitq);
 443         } else if (priv->adapter->connect_status == LIBERTAS_CONNECTED) {
 444                 netif_wake_queue(priv->dev);
 445                 netif_wake_queue(priv->mesh_dev);
 446         }
 447
 448         lbs_deb_leave(LBS_DEB_TX);
 449 }
 450
 451 /**
 452  *  @brief This function returns the network statistics
 453  *
 454  *  @param dev     A pointer to wlan_private structure
 455  *  @return        A pointer to net_device_stats structure
 456  */
 457 static struct net_device_stats *wlan_get_stats(struct net_device *dev)
 458 {
 459         wlan_private *priv = (wlan_private *) dev->priv;
 460
 461         return &priv->stats;
 462 }
 463
 464 static int wlan_set_mac_address(struct net_device *dev, void *addr)
 465 {
 466         int ret = 0;
 467         wlan_private *priv = (wlan_private *) dev->priv;
 468         wlan_adapter *adapter = priv->adapter;
 469         struct sockaddr *phwaddr = addr;
 470
 471         lbs_deb_enter(LBS_DEB_NET);
 472
 473         /* In case it was called from the mesh device */
 474         dev = priv->dev ;
 475
 476         memset(adapter->current_addr, 0, ETH_ALEN);
 477
 478         /* dev->dev_addr is 8 bytes */
 479         lbs_dbg_hex("dev->dev_addr:", dev->dev_addr, ETH_ALEN);
 480
 481         lbs_dbg_hex("addr:", phwaddr->sa_data, ETH_ALEN);
 482         memcpy(adapter->current_addr, phwaddr->sa_data, ETH_ALEN);
 483
 484         ret = libertas_prepare_and_send_command(priv, CMD_802_11_MAC_ADDRESS,
 485                                     CMD_ACT_SET,
 486                                     CMD_OPTION_WAITFORRSP, 0, NULL);
 487
 488         if (ret) {
 489                 lbs_deb_net("set MAC address failed\n");
 490                 ret = -1;
 491                 goto done;
 492         }
 493
 494         lbs_dbg_hex("adapter->macaddr:", adapter->current_addr, ETH_ALEN);
 495         memcpy(dev->dev_addr, adapter->current_addr, ETH_ALEN);
 496         if (priv->mesh_dev)
 497                 memcpy(priv->mesh_dev->dev_addr, adapter->current_addr, ETH_ALEN);
 498
 499 done:
 500         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 501         return ret;
 502 }
 503
 504 static int wlan_copy_multicast_address(wlan_adapter * adapter,
 505                                      struct net_device *dev)
 506 {
 507         int i = 0;
 508         struct dev_mc_list *mcptr = dev->mc_list;
 509
 510         for (i = 0; i < dev->mc_count; i++) {
 511                 memcpy(&adapter->multicastlist[i], mcptr->dmi_addr, ETH_ALEN);
 512                 mcptr = mcptr->next;
 513         }
 514
 515         return i;
 516
 517 }
 518
 519 static void wlan_set_multicast_list(struct net_device *dev)
 520 {
 521         wlan_private *priv = dev->priv;
 522         wlan_adapter *adapter = priv->adapter;
 523         int oldpacketfilter;
 524
 525         lbs_deb_enter(LBS_DEB_NET);
 526
 527         oldpacketfilter = adapter->currentpacketfilter;
 528
 529         if (dev->flags & IFF_PROMISC) {
 530                 lbs_deb_net("enable promiscuous mode\n");
 531                 adapter->currentpacketfilter |=
 532                     CMD_ACT_MAC_PROMISCUOUS_ENABLE;
 533                 adapter->currentpacketfilter &=
 534                     ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
 535                       CMD_ACT_MAC_MULTICAST_ENABLE);
 536         } else {
 537                 /* Multicast */
 538                 adapter->currentpacketfilter &=
 539                     ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
 540
 541                 if (dev->flags & IFF_ALLMULTI || dev->mc_count >
 542                     MRVDRV_MAX_MULTICAST_LIST_SIZE) {
 543                         lbs_deb_net( "enabling all multicast\n");
 544                         adapter->currentpacketfilter |=
 545                             CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
 546                         adapter->currentpacketfilter &=
 547                             ~CMD_ACT_MAC_MULTICAST_ENABLE;
 548                 } else {
 549                         adapter->currentpacketfilter &=
 550                             ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
 551
 552                         if (!dev->mc_count) {
 553                                 lbs_deb_net("no multicast addresses, "
 554                                        "disabling multicast\n");
 555                                 adapter->currentpacketfilter &=
 556                                     ~CMD_ACT_MAC_MULTICAST_ENABLE;
 557                         } else {
 558                                 int i;
 559
 560                                 adapter->currentpacketfilter |=
 561                                     CMD_ACT_MAC_MULTICAST_ENABLE;
 562
 563                                 adapter->nr_of_multicastmacaddr =
 564                                     wlan_copy_multicast_address(adapter, dev);
 565
 566                                 lbs_deb_net("multicast addresses: %d\n",
 567                                        dev->mc_count);
 568
 569                                 for (i = 0; i < dev->mc_count; i++) {
 570                                         lbs_deb_net("Multicast address %d:"
 571                                                MAC_FMT "\n", i,
 572                                                adapter->multicastlist[i][0],
 573                                                adapter->multicastlist[i][1],
 574                                                adapter->multicastlist[i][2],
 575                                                adapter->multicastlist[i][3],
 576                                                adapter->multicastlist[i][4],
 577                                                adapter->multicastlist[i][5]);
 578                                 }
 579                                 /* send multicast addresses to firmware */
 580                                 libertas_prepare_and_send_command(priv,
 581                                                       CMD_MAC_MULTICAST_ADR,
 582                                                       CMD_ACT_SET, 0, 0,
 583                                                       NULL);
 584                         }
 585                 }
 586         }
 587
 588         if (adapter->currentpacketfilter != oldpacketfilter) {
 589                 libertas_set_mac_packet_filter(priv);
 590         }
 591
 592         lbs_deb_leave(LBS_DEB_NET);
 593 }
 594
 595 /**
 596  *  @brief This function handles the major jobs in the WLAN driver.
 597  *  It handles all events generated by firmware, RX data received
 598  *  from firmware and TX data sent from kernel.
 599  *
 600  *  @param data    A pointer to wlan_thread structure
 601  *  @return        0
 602  */
 603 static int libertas_thread(void *data)
 604 {
 605         struct net_device *dev = data;
 606         wlan_private *priv = dev->priv;
 607         wlan_adapter *adapter = priv->adapter;
 608         wait_queue_t wait;
 609         u8 ireg = 0;
 610
 611         lbs_deb_enter(LBS_DEB_THREAD);
 612
 613         init_waitqueue_entry(&wait, current);
 614
 615         for (;;) {
 616                 lbs_deb_thread( "main-thread 111: intcounter=%d "
 617                        "currenttxskb=%p dnld_sent=%d\n",
 618                        adapter->intcounter,
 619                        adapter->currenttxskb, priv->dnld_sent);
 620
 621                 add_wait_queue(&priv->waitq, &wait);
 622                 set_current_state(TASK_INTERRUPTIBLE);
 623                 spin_lock_irq(&adapter->driver_lock);
 624                 if ((adapter->psstate == PS_STATE_SLEEP) ||
 625                     (!adapter->intcounter
 626                      && (priv->dnld_sent || adapter->cur_cmd ||
 627                          list_empty(&adapter->cmdpendingq)))) {
 628                         lbs_deb_thread(
 629                                "main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
 630                                adapter->connect_status, adapter->intcounter,
 631                                adapter->psmode, adapter->psstate);
 632                         spin_unlock_irq(&adapter->driver_lock);
 633                         schedule();
 634                 } else
 635                         spin_unlock_irq(&adapter->driver_lock);
 636
 637
 638                 lbs_deb_thread(
 639                        "main-thread 222 (waking up): intcounter=%d currenttxskb=%p "
 640                        "dnld_sent=%d\n", adapter->intcounter,
 641                        adapter->currenttxskb, priv->dnld_sent);
 642
 643                 set_current_state(TASK_RUNNING);
 644                 remove_wait_queue(&priv->waitq, &wait);
 645                 try_to_freeze();
 646
 647                 lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p "
 648                        "dnld_sent=%d\n",
 649                        adapter->intcounter,
 650                        adapter->currenttxskb, priv->dnld_sent);
 651
 652                 if (kthread_should_stop()
 653                     || adapter->surpriseremoved) {
 654                         lbs_deb_thread(
 655                                "main-thread: break from main thread: surpriseremoved=0x%x\n",
 656                                adapter->surpriseremoved);
 657                         break;
 658                 }
 659
 660
 661                 spin_lock_irq(&adapter->driver_lock);
 662                 if (adapter->intcounter) {
 663                         u8 int_status;
 664                         adapter->intcounter = 0;
 665                         int_status = priv->hw_get_int_status(priv, &ireg);
 666
 667                         if (int_status) {
 668                                 lbs_deb_thread(
 669                                        "main-thread: reading HOST_INT_STATUS_REG failed\n");
 670                                 spin_unlock_irq(&adapter->driver_lock);
 671                                 continue;
 672                         }
 673                         adapter->hisregcpy |= ireg;
 674                 }
 675
 676                 lbs_deb_thread("main-thread 444: intcounter=%d currenttxskb=%p "
 677                        "dnld_sent=%d\n",
 678                        adapter->intcounter,
 679                        adapter->currenttxskb, priv->dnld_sent);
 680
 681                 /* command response? */
 682                 if (adapter->hisregcpy & his_cmdupldrdy) {
 683                         lbs_deb_thread("main-thread: cmd response ready\n");
 684
 685                         adapter->hisregcpy &= ~his_cmdupldrdy;
 686                         spin_unlock_irq(&adapter->driver_lock);
 687                         libertas_process_rx_command(priv);
 688                         spin_lock_irq(&adapter->driver_lock);
 689                 }
 690
 691                 /* Any Card Event */
 692                 if (adapter->hisregcpy & his_cardevent) {
 693                         lbs_deb_thread("main-thread: Card Event Activity\n");
 694
 695                         adapter->hisregcpy &= ~his_cardevent;
 696
 697                         if (priv->hw_read_event_cause(priv)) {
 698                                 lbs_pr_alert(
 699                                        "main-thread: hw_read_event_cause failed\n");
 700                                 spin_unlock_irq(&adapter->driver_lock);
 701                                 continue;
 702                         }
 703                         spin_unlock_irq(&adapter->driver_lock);
 704                         libertas_process_event(priv);
 705                 } else
 706                         spin_unlock_irq(&adapter->driver_lock);
 707
 708                 /* Check if we need to confirm Sleep Request received previously */
 709                 if (adapter->psstate == PS_STATE_PRE_SLEEP) {
 710                         if (!priv->dnld_sent && !adapter->cur_cmd) {
 711                                 if (adapter->connect_status ==
 712                                     LIBERTAS_CONNECTED) {
 713                                         lbs_deb_thread(
 714                                                "main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p "
 715                                                "dnld_sent=%d cur_cmd=%p, confirm now\n",
 716                                                adapter->intcounter,
 717                                                adapter->currenttxskb,
 718                                                priv->dnld_sent,
 719                                                adapter->cur_cmd);
 720
 721                                         libertas_ps_confirm_sleep(priv,
 722                                                        (u16) adapter->psmode);
 723                                 } else {
 724                                         /* workaround for firmware sending
 725                                          * deauth/linkloss event immediately
 726                                          * after sleep request, remove this
 727                                          * after firmware fixes it
 728                                          */
 729                                         adapter->psstate = PS_STATE_AWAKE;
 730                                         lbs_pr_alert(
 731                                                "main-thread: ignore PS_SleepConfirm in non-connected state\n");
 732                                 }
 733                         }
 734                 }
 735
 736                 /* The PS state is changed during processing of Sleep Request
 737                  * event above
 738                  */
 739                 if ((priv->adapter->psstate == PS_STATE_SLEEP) ||
 740                     (priv->adapter->psstate == PS_STATE_PRE_SLEEP))
 741                         continue;
 742
 743                 /* Execute the next command */
 744                 if (!priv->dnld_sent && !priv->adapter->cur_cmd)
 745                         libertas_execute_next_command(priv);
 746
 747                 /* Wake-up command waiters which can't sleep in
 748                  * libertas_prepare_and_send_command
 749                  */
 750                 if (!adapter->nr_cmd_pending)
 751                         wake_up_all(&adapter->cmd_pending);
 752
 753                 libertas_tx_runqueue(priv);
 754         }
 755
 756         del_timer(&adapter->command_timer);
 757         adapter->nr_cmd_pending = 0;
 758         wake_up_all(&adapter->cmd_pending);
 759
 760         lbs_deb_leave(LBS_DEB_THREAD);
 761         return 0;
 762 }
 763
 764 /**
 765  * @brief This function adds the card. it will probe the
 766  * card, allocate the wlan_priv and initialize the device.
 767  *
 768  *  @param card    A pointer to card
 769  *  @return        A pointer to wlan_private structure
 770  */
 771 wlan_private *libertas_add_card(void *card, struct device *dmdev)
 772 {
 773         struct net_device *dev = NULL;
 774         wlan_private *priv = NULL;
 775
 776         lbs_deb_enter(LBS_DEB_NET);
 777
 778         /* Allocate an Ethernet device and register it */
 779         if (!(dev = alloc_etherdev(sizeof(wlan_private)))) {
 780                 lbs_pr_err("init ethX device failed\n");
 781                 return NULL;
 782         }
 783         priv = dev->priv;
 784
 785         /* allocate buffer for wlan_adapter */
 786         if (!(priv->adapter = kzalloc(sizeof(wlan_adapter), GFP_KERNEL))) {
 787                 lbs_pr_err("allocate buffer for wlan_adapter failed\n");
 788                 goto err_kzalloc;
 789         }
 790
 791         priv->dev = dev;
 792         priv->card = card;
 793         priv->mesh_open = 0;
 794         priv->infra_open = 0;
 795
 796         SET_MODULE_OWNER(dev);
 797
 798         /* Setup the OS Interface to our functions */
 799         dev->open = wlan_open;
 800         dev->hard_start_xmit = wlan_pre_start_xmit;
 801         dev->stop = wlan_close;
 802         dev->set_mac_address = wlan_set_mac_address;
 803         dev->tx_timeout = wlan_tx_timeout;
 804         dev->get_stats = wlan_get_stats;
 805         dev->watchdog_timeo = 5 * HZ;
 806         dev->ethtool_ops = &libertas_ethtool_ops;
 807 #ifdef  WIRELESS_EXT
 808         dev->wireless_handlers = (struct iw_handler_def *)&libertas_handler_def;
 809 #endif
 810 #define NETIF_F_DYNALLOC 16
 811         dev->features |= NETIF_F_DYNALLOC;
 812         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
 813         dev->set_multicast_list = wlan_set_multicast_list;
 814
 815         SET_NETDEV_DEV(dev, dmdev);
 816
 817         INIT_LIST_HEAD(&priv->adapter->cmdfreeq);
 818         INIT_LIST_HEAD(&priv->adapter->cmdpendingq);
 819
 820         spin_lock_init(&priv->adapter->driver_lock);
 821         init_waitqueue_head(&priv->adapter->cmd_pending);
 822         priv->adapter->nr_cmd_pending = 0;
 823         goto done;
 824
 825 err_kzalloc:
 826         free_netdev(dev);
 827         priv = NULL;
 828 done:
 829         lbs_deb_leave_args(LBS_DEB_NET, "priv %p", priv);
 830         return priv;
 831 }
 832 EXPORT_SYMBOL_GPL(libertas_add_card);
 833
 834 int libertas_activate_card(wlan_private *priv, char *fw_name)
 835 {
 836         struct net_device *dev = priv->dev;
 837         int ret = -1;
 838
 839         lbs_deb_enter(LBS_DEB_MAIN);
 840
 841         lbs_deb_thread("Starting main thread...\n");
 842         init_waitqueue_head(&priv->waitq);
 843         priv->main_thread = kthread_run(libertas_thread, dev, "libertas_main");
 844         if (IS_ERR(priv->main_thread)) {
 845                 lbs_deb_thread("Error creating main thread.\n");
 846                 goto done;
 847         }
 848
 849         priv->assoc_thread =
 850                 create_singlethread_workqueue("libertas_assoc");
 851         INIT_DELAYED_WORK(&priv->assoc_work, libertas_association_worker);
 852         INIT_WORK(&priv->sync_channel, libertas_sync_channel);
 853
 854         /*
 855          * Register the device. Fillup the private data structure with
 856          * relevant information from the card and request for the required
 857          * IRQ.
 858          */
 859         if (priv->hw_register_dev(priv) < 0) {
 860                 lbs_pr_err("failed to register WLAN device\n");
 861                 goto err_registerdev;
 862         }
 863
 864         /* init FW and HW */
 865         if (fw_name && libertas_init_fw(priv, fw_name)) {
 866                 lbs_pr_err("firmware init failed\n");
 867                 goto err_registerdev;
 868         }
 869
 870         if (register_netdev(dev)) {
 871                 lbs_pr_err("cannot register ethX device\n");
 872                 goto err_init_fw;
 873         }
 874
 875         lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
 876
 877         libertas_debugfs_init_one(priv, dev);
 878
 879         ret = 0;
 880         goto done;
 881
 882 err_init_fw:
 883         priv->hw_unregister_dev(priv);
 884 err_registerdev:
 885         destroy_workqueue(priv->assoc_thread);
 886         /* Stop the thread servicing the interrupts */
 887         wake_up_interruptible(&priv->waitq);
 888         kthread_stop(priv->main_thread);
 889 done:
 890         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 891         return ret;
 892 }
 893 EXPORT_SYMBOL_GPL(libertas_activate_card);
 894
 895
 896 /**
 897  * @brief This function adds mshX interface
 898  *
 899  *  @param priv    A pointer to the wlan_private structure
 900  *  @return        0 if successful, -X otherwise
 901  */
 902 int libertas_add_mesh(wlan_private *priv, struct device *dev)
 903 {
 904         struct net_device *mesh_dev = NULL;
 905         int ret = 0;
 906
 907         lbs_deb_enter(LBS_DEB_MESH);
 908
 909         /* Allocate a virtual mesh device */
 910         if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
 911                 lbs_deb_mesh("init mshX device failed\n");
 912                 ret = -ENOMEM;
 913                 goto done;
 914         }
 915         mesh_dev->priv = priv;
 916         priv->mesh_dev = mesh_dev;
 917
 918         SET_MODULE_OWNER(mesh_dev);
 919
 920         mesh_dev->open = mesh_open;
 921         mesh_dev->hard_start_xmit = mesh_pre_start_xmit;
 922         mesh_dev->stop = mesh_close;
 923         mesh_dev->get_stats = wlan_get_stats;
 924         mesh_dev->set_mac_address = wlan_set_mac_address;
 925         mesh_dev->ethtool_ops = &libertas_ethtool_ops;
 926         memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
 927                         sizeof(priv->dev->dev_addr));
 928
 929         SET_NETDEV_DEV(priv->mesh_dev, dev);
 930
 931 #ifdef  WIRELESS_EXT
 932         mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
 933 #endif
 934 #define NETIF_F_DYNALLOC 16
 935
 936         /* Register virtual mesh interface */
 937         ret = register_netdev(mesh_dev);
 938         if (ret) {
 939                 lbs_pr_err("cannot register mshX virtual interface\n");
 940                 goto err_free;
 941         }
 942
 943         ret = device_create_file(&(mesh_dev->dev), &dev_attr_anycast_mask);
 944         if (ret)
 945                 goto err_unregister;
 946
 947         /* Everything successful */
 948         ret = 0;
 949         goto done;
 950
 951
 952 err_unregister:
 953         unregister_netdev(mesh_dev);
 954
 955 err_free:
 956         free_netdev(mesh_dev);
 957
 958 done:
 959         lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
 960         return ret;
 961 }
 962 EXPORT_SYMBOL_GPL(libertas_add_mesh);
 963
 964 static void wake_pending_cmdnodes(wlan_private *priv)
 965 {
 966         struct cmd_ctrl_node *cmdnode;
 967         unsigned long flags;
 968
 969         lbs_deb_enter(LBS_DEB_CMD);
 970
 971         spin_lock_irqsave(&priv->adapter->driver_lock, flags);
 972         list_for_each_entry(cmdnode, &priv->adapter->cmdpendingq, list) {
 973                 cmdnode->cmdwaitqwoken = 1;
 974                 wake_up_interruptible(&cmdnode->cmdwait_q);
 975         }
 976         spin_unlock_irqrestore(&priv->adapter->driver_lock, flags);
 977 }
 978
 979
 980 int libertas_remove_card(wlan_private *priv)
 981 {
 982         wlan_adapter *adapter;
 983         struct net_device *dev;
 984         union iwreq_data wrqu;
 985
 986         lbs_deb_enter(LBS_DEB_NET);
 987
 988         if (!priv)
 989                 goto out;
 990
 991         adapter = priv->adapter;
 992
 993         if (!adapter)
 994                 goto out;
 995
 996         dev = priv->dev;
 997
 998         netif_stop_queue(priv->dev);
 999         netif_carrier_off(priv->dev);
1000
1001         wake_pending_cmdnodes(priv);
1002
1003         unregister_netdev(dev);
1004
1005         cancel_delayed_work(&priv->assoc_work);
1006         destroy_workqueue(priv->assoc_thread);
1007
1008         if (adapter->psmode == WLAN802_11POWERMODEMAX_PSP) {
1009                 adapter->psmode = WLAN802_11POWERMODECAM;
1010                 libertas_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1011         }
1012
1013         memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1014         wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1015         wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1016
1017         adapter->surpriseremoved = 1;
1018
1019         /* Stop the thread servicing the interrupts */
1020         kthread_stop(priv->main_thread);
1021
1022         libertas_debugfs_remove_one(priv);
1023
1024         lbs_deb_net("free adapter\n");
1025         libertas_free_adapter(priv);
1026
1027         lbs_deb_net("unregister finish\n");
1028
1029         priv->dev = NULL;
1030         free_netdev(dev);
1031
1032 out:
1033         lbs_deb_leave(LBS_DEB_NET);
1034         return 0;
1035 }
1036 EXPORT_SYMBOL_GPL(libertas_remove_card);
1037
1038
1039 void libertas_remove_mesh(wlan_private *priv)
1040 {
1041         struct net_device *mesh_dev;
1042
1043         lbs_deb_enter(LBS_DEB_NET);
1044
1045         if (!priv)
1046                 goto out;
1047
1048         mesh_dev = priv->mesh_dev;
1049
1050         netif_stop_queue(mesh_dev);
1051         netif_carrier_off(priv->mesh_dev);
1052
1053         device_remove_file(&(mesh_dev->dev), &dev_attr_anycast_mask);
1054         unregister_netdev(mesh_dev);
1055
1056         priv->mesh_dev = NULL ;
1057         free_netdev(mesh_dev);
1058
1059 out:
1060         lbs_deb_leave(LBS_DEB_NET);
1061 }
1062 EXPORT_SYMBOL_GPL(libertas_remove_mesh);
1063
1064 /**
1065  *  @brief This function finds the CFP in
1066  *  region_cfp_table based on region and band parameter.
1067  *
1068  *  @param region  The region code
1069  *  @param band    The band
1070  *  @param cfp_no  A pointer to CFP number
1071  *  @return        A pointer to CFP
1072  */
1073 struct chan_freq_power *libertas_get_region_cfp_table(u8 region, u8 band, int *cfp_no)
1074 {
1075         int i, end;
1076
1077         lbs_deb_enter(LBS_DEB_MAIN);
1078
1079         end = sizeof(region_cfp_table)/sizeof(struct region_cfp_table);
1080
1081         for (i = 0; i < end ; i++) {
1082                 lbs_deb_main("region_cfp_table[i].region=%d\n",
1083                         region_cfp_table[i].region);
1084                 if (region_cfp_table[i].region == region) {
1085                         *cfp_no = region_cfp_table[i].cfp_no_BG;
1086                         lbs_deb_leave(LBS_DEB_MAIN);
1087                         return region_cfp_table[i].cfp_BG;
1088                 }
1089         }
1090
1091         lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1092         return NULL;
1093 }
1094
1095 int libertas_set_regiontable(wlan_private * priv, u8 region, u8 band)
1096 {
1097         wlan_adapter *adapter = priv->adapter;
1098         int ret = 0;
1099         int i = 0;
1100
1101         struct chan_freq_power *cfp;
1102         int cfp_no;
1103
1104         lbs_deb_enter(LBS_DEB_MAIN);
1105
1106         memset(adapter->region_channel, 0, sizeof(adapter->region_channel));
1107
1108         {
1109                 cfp = libertas_get_region_cfp_table(region, band, &cfp_no);
1110                 if (cfp != NULL) {
1111                         adapter->region_channel[i].nrcfp = cfp_no;
1112                         adapter->region_channel[i].CFP = cfp;
1113                 } else {
1114                         lbs_deb_main("wrong region code %#x in band B/G\n",
1115                                region);
1116                         ret = -1;
1117                         goto out;
1118                 }
1119                 adapter->region_channel[i].valid = 1;
1120                 adapter->region_channel[i].region = region;
1121                 adapter->region_channel[i].band = band;
1122                 i++;
1123         }
1124 out:
1125         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1126         return ret;
1127 }
1128
1129 /**
1130  *  @brief This function handles the interrupt. it will change PS
1131  *  state if applicable. it will wake up main_thread to handle
1132  *  the interrupt event as well.
1133  *
1134  *  @param dev     A pointer to net_device structure
1135  *  @return        n/a
1136  */
1137 void libertas_interrupt(struct net_device *dev)
1138 {
1139         wlan_private *priv = dev->priv;
1140
1141         lbs_deb_enter(LBS_DEB_THREAD);
1142
1143         lbs_deb_thread("libertas_interrupt: intcounter=%d\n",
1144                priv->adapter->intcounter);
1145
1146         priv->adapter->intcounter++;
1147
1148         if (priv->adapter->psstate == PS_STATE_SLEEP) {
1149                 priv->adapter->psstate = PS_STATE_AWAKE;
1150                 netif_wake_queue(dev);
1151                 netif_wake_queue(priv->mesh_dev);
1152         }
1153
1154         wake_up_interruptible(&priv->waitq);
1155
1156         lbs_deb_leave(LBS_DEB_THREAD);
1157 }
1158 EXPORT_SYMBOL_GPL(libertas_interrupt);
1159
1160 static int libertas_init_module(void)
1161 {
1162         lbs_deb_enter(LBS_DEB_MAIN);
1163         libertas_debugfs_init();
1164         lbs_deb_leave(LBS_DEB_MAIN);
1165         return 0;
1166 }
1167
1168 static void libertas_exit_module(void)
1169 {
1170         lbs_deb_enter(LBS_DEB_MAIN);
1171
1172         libertas_debugfs_remove();
1173
1174         lbs_deb_leave(LBS_DEB_MAIN);
1175 }
1176
1177 module_init(libertas_init_module);
1178 module_exit(libertas_exit_module);
1179
1180 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1181 MODULE_AUTHOR("Marvell International Ltd.");
1182 MODULE_LICENSE("GPL");