drivers/net/wireless/wl1251/main.c

   1 /*
   2  * This file is part of wl1251
   3  *
   4  * Copyright (C) 2008-2009 Nokia Corporation
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * version 2 as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  18  * 02110-1301 USA
  19  *
  20  */
  21
  22 #include <linux/module.h>
  23 #include <linux/interrupt.h>
  24 #include <linux/firmware.h>
  25 #include <linux/delay.h>
  26 #include <linux/irq.h>
  27 #include <linux/crc32.h>
  28 #include <linux/etherdevice.h>
  29 #include <linux/vmalloc.h>
  30 #include <linux/slab.h>
  31
  32 #include "wl1251.h"
  33 #include "wl12xx_80211.h"
  34 #include "reg.h"
  35 #include "io.h"
  36 #include "cmd.h"
  37 #include "event.h"
  38 #include "tx.h"
  39 #include "rx.h"
  40 #include "ps.h"
  41 #include "init.h"
  42 #include "debugfs.h"
  43 #include "boot.h"
  44
  45 void wl1251_enable_interrupts(struct wl1251 *wl)
  46 {
  47         wl->if_ops->enable_irq(wl);
  48 }
  49
  50 void wl1251_disable_interrupts(struct wl1251 *wl)
  51 {
  52         wl->if_ops->disable_irq(wl);
  53 }
  54
  55 static int wl1251_power_off(struct wl1251 *wl)
  56 {
  57         return wl->if_ops->power(wl, false);
  58 }
  59
  60 static int wl1251_power_on(struct wl1251 *wl)
  61 {
  62         return wl->if_ops->power(wl, true);
  63 }
  64
  65 static int wl1251_fetch_firmware(struct wl1251 *wl)
  66 {
  67         const struct firmware *fw;
  68         struct device *dev = wiphy_dev(wl->hw->wiphy);
  69         int ret;
  70
  71         ret = request_firmware(&fw, WL1251_FW_NAME, dev);
  72
  73         if (ret < 0) {
  74                 wl1251_error("could not get firmware: %d", ret);
  75                 return ret;
  76         }
  77
  78         if (fw->size % 4) {
  79                 wl1251_error("firmware size is not multiple of 32 bits: %zu",
  80                              fw->size);
  81                 ret = -EILSEQ;
  82                 goto out;
  83         }
  84
  85         wl->fw_len = fw->size;
  86         wl->fw = vmalloc(wl->fw_len);
  87
  88         if (!wl->fw) {
  89                 wl1251_error("could not allocate memory for the firmware");
  90                 ret = -ENOMEM;
  91                 goto out;
  92         }
  93
  94         memcpy(wl->fw, fw->data, wl->fw_len);
  95
  96         ret = 0;
  97
  98 out:
  99         release_firmware(fw);
 100
 101         return ret;
 102 }
 103
 104 static int wl1251_fetch_nvs(struct wl1251 *wl)
 105 {
 106         const struct firmware *fw;
 107         struct device *dev = wiphy_dev(wl->hw->wiphy);
 108         int ret;
 109
 110         ret = request_firmware(&fw, WL1251_NVS_NAME, dev);
 111
 112         if (ret < 0) {
 113                 wl1251_error("could not get nvs file: %d", ret);
 114                 return ret;
 115         }
 116
 117         if (fw->size % 4) {
 118                 wl1251_error("nvs size is not multiple of 32 bits: %zu",
 119                              fw->size);
 120                 ret = -EILSEQ;
 121                 goto out;
 122         }
 123
 124         wl->nvs_len = fw->size;
 125         wl->nvs = kmemdup(fw->data, wl->nvs_len, GFP_KERNEL);
 126
 127         if (!wl->nvs) {
 128                 wl1251_error("could not allocate memory for the nvs file");
 129                 ret = -ENOMEM;
 130                 goto out;
 131         }
 132
 133         ret = 0;
 134
 135 out:
 136         release_firmware(fw);
 137
 138         return ret;
 139 }
 140
 141 static void wl1251_fw_wakeup(struct wl1251 *wl)
 142 {
 143         u32 elp_reg;
 144
 145         elp_reg = ELPCTRL_WAKE_UP;
 146         wl1251_write_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
 147         elp_reg = wl1251_read_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR);
 148
 149         if (!(elp_reg & ELPCTRL_WLAN_READY))
 150                 wl1251_warning("WLAN not ready");
 151 }
 152
 153 static int wl1251_chip_wakeup(struct wl1251 *wl)
 154 {
 155         int ret;
 156
 157         ret = wl1251_power_on(wl);
 158         if (ret < 0)
 159                 return ret;
 160
 161         msleep(WL1251_POWER_ON_SLEEP);
 162         wl->if_ops->reset(wl);
 163
 164         /* We don't need a real memory partition here, because we only want
 165          * to use the registers at this point. */
 166         wl1251_set_partition(wl,
 167                              0x00000000,
 168                              0x00000000,
 169                              REGISTERS_BASE,
 170                              REGISTERS_DOWN_SIZE);
 171
 172         /* ELP module wake up */
 173         wl1251_fw_wakeup(wl);
 174
 175         /* whal_FwCtrl_BootSm() */
 176
 177         /* 0. read chip id from CHIP_ID */
 178         wl->chip_id = wl1251_reg_read32(wl, CHIP_ID_B);
 179
 180         /* 1. check if chip id is valid */
 181
 182         switch (wl->chip_id) {
 183         case CHIP_ID_1251_PG12:
 184                 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG12)",
 185                              wl->chip_id);
 186                 break;
 187         case CHIP_ID_1251_PG11:
 188                 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG11)",
 189                              wl->chip_id);
 190                 break;
 191         case CHIP_ID_1251_PG10:
 192         default:
 193                 wl1251_error("unsupported chip id: 0x%x", wl->chip_id);
 194                 ret = -ENODEV;
 195                 goto out;
 196         }
 197
 198         if (wl->fw == NULL) {
 199                 ret = wl1251_fetch_firmware(wl);
 200                 if (ret < 0)
 201                         goto out;
 202         }
 203
 204         if (wl->nvs == NULL && !wl->use_eeprom) {
 205                 /* No NVS from netlink, try to get it from the filesystem */
 206                 ret = wl1251_fetch_nvs(wl);
 207                 if (ret < 0)
 208                         goto out;
 209         }
 210
 211 out:
 212         return ret;
 213 }
 214
 215 #define WL1251_IRQ_LOOP_COUNT 10
 216 static void wl1251_irq_work(struct work_struct *work)
 217 {
 218         u32 intr, ctr = WL1251_IRQ_LOOP_COUNT;
 219         struct wl1251 *wl =
 220                 container_of(work, struct wl1251, irq_work);
 221         int ret;
 222
 223         mutex_lock(&wl->mutex);
 224
 225         wl1251_debug(DEBUG_IRQ, "IRQ work");
 226
 227         if (wl->state == WL1251_STATE_OFF)
 228                 goto out;
 229
 230         ret = wl1251_ps_elp_wakeup(wl);
 231         if (ret < 0)
 232                 goto out;
 233
 234         wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1251_ACX_INTR_ALL);
 235
 236         intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
 237         wl1251_debug(DEBUG_IRQ, "intr: 0x%x", intr);
 238
 239         do {
 240                 if (wl->data_path) {
 241                         wl->rx_counter = wl1251_mem_read32(
 242                                 wl, wl->data_path->rx_control_addr);
 243
 244                         /* We handle a frmware bug here */
 245                         switch ((wl->rx_counter - wl->rx_handled) & 0xf) {
 246                         case 0:
 247                                 wl1251_debug(DEBUG_IRQ,
 248                                              "RX: FW and host in sync");
 249                                 intr &= ~WL1251_ACX_INTR_RX0_DATA;
 250                                 intr &= ~WL1251_ACX_INTR_RX1_DATA;
 251                                 break;
 252                         case 1:
 253                                 wl1251_debug(DEBUG_IRQ, "RX: FW +1");
 254                                 intr |= WL1251_ACX_INTR_RX0_DATA;
 255                                 intr &= ~WL1251_ACX_INTR_RX1_DATA;
 256                                 break;
 257                         case 2:
 258                                 wl1251_debug(DEBUG_IRQ, "RX: FW +2");
 259                                 intr |= WL1251_ACX_INTR_RX0_DATA;
 260                                 intr |= WL1251_ACX_INTR_RX1_DATA;
 261                                 break;
 262                         default:
 263                                 wl1251_warning(
 264                                         "RX: FW and host out of sync: %d",
 265                                         wl->rx_counter - wl->rx_handled);
 266                                 break;
 267                         }
 268
 269                         wl->rx_handled = wl->rx_counter;
 270
 271                         wl1251_debug(DEBUG_IRQ, "RX counter: %d",
 272                                      wl->rx_counter);
 273                 }
 274
 275                 intr &= wl->intr_mask;
 276
 277                 if (intr == 0) {
 278                         wl1251_debug(DEBUG_IRQ, "INTR is 0");
 279                         goto out_sleep;
 280                 }
 281
 282                 if (intr & WL1251_ACX_INTR_RX0_DATA) {
 283                         wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX0_DATA");
 284                         wl1251_rx(wl);
 285                 }
 286
 287                 if (intr & WL1251_ACX_INTR_RX1_DATA) {
 288                         wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX1_DATA");
 289                         wl1251_rx(wl);
 290                 }
 291
 292                 if (intr & WL1251_ACX_INTR_TX_RESULT) {
 293                         wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_TX_RESULT");
 294                         wl1251_tx_complete(wl);
 295                 }
 296
 297                 if (intr & WL1251_ACX_INTR_EVENT_A) {
 298                         wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_A");
 299                         wl1251_event_handle(wl, 0);
 300                 }
 301
 302                 if (intr & WL1251_ACX_INTR_EVENT_B) {
 303                         wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_B");
 304                         wl1251_event_handle(wl, 1);
 305                 }
 306
 307                 if (intr & WL1251_ACX_INTR_INIT_COMPLETE)
 308                         wl1251_debug(DEBUG_IRQ,
 309                                      "WL1251_ACX_INTR_INIT_COMPLETE");
 310
 311                 if (--ctr == 0)
 312                         break;
 313
 314                 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
 315         } while (intr);
 316
 317 out_sleep:
 318         wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask));
 319         wl1251_ps_elp_sleep(wl);
 320
 321 out:
 322         mutex_unlock(&wl->mutex);
 323 }
 324
 325 static int wl1251_join(struct wl1251 *wl, u8 bss_type, u8 channel,
 326                        u16 beacon_interval, u8 dtim_period)
 327 {
 328         int ret;
 329
 330         ret = wl1251_acx_frame_rates(wl, DEFAULT_HW_GEN_TX_RATE,
 331                                      DEFAULT_HW_GEN_MODULATION_TYPE,
 332                                      wl->tx_mgmt_frm_rate,
 333                                      wl->tx_mgmt_frm_mod);
 334         if (ret < 0)
 335                 goto out;
 336
 337
 338         ret = wl1251_cmd_join(wl, bss_type, channel, beacon_interval,
 339                               dtim_period);
 340         if (ret < 0)
 341                 goto out;
 342
 343         ret = wl1251_event_wait(wl, JOIN_EVENT_COMPLETE_ID, 100);
 344         if (ret < 0)
 345                 wl1251_warning("join timeout");
 346
 347 out:
 348         return ret;
 349 }
 350
 351 static void wl1251_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 352 {
 353         struct wl1251 *wl = hw->priv;
 354         unsigned long flags;
 355
 356         skb_queue_tail(&wl->tx_queue, skb);
 357
 358         /*
 359          * The chip specific setup must run before the first TX packet -
 360          * before that, the tx_work will not be initialized!
 361          */
 362
 363         ieee80211_queue_work(wl->hw, &wl->tx_work);
 364
 365         /*
 366          * The workqueue is slow to process the tx_queue and we need stop
 367          * the queue here, otherwise the queue will get too long.
 368          */
 369         if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_HIGH_WATERMARK) {
 370                 wl1251_debug(DEBUG_TX, "op_tx: tx_queue full, stop queues");
 371
 372                 spin_lock_irqsave(&wl->wl_lock, flags);
 373                 ieee80211_stop_queues(wl->hw);
 374                 wl->tx_queue_stopped = true;
 375                 spin_unlock_irqrestore(&wl->wl_lock, flags);
 376         }
 377 }
 378
 379 static int wl1251_op_start(struct ieee80211_hw *hw)
 380 {
 381         struct wl1251 *wl = hw->priv;
 382         struct wiphy *wiphy = hw->wiphy;
 383         int ret = 0;
 384
 385         wl1251_debug(DEBUG_MAC80211, "mac80211 start");
 386
 387         mutex_lock(&wl->mutex);
 388
 389         if (wl->state != WL1251_STATE_OFF) {
 390                 wl1251_error("cannot start because not in off state: %d",
 391                              wl->state);
 392                 ret = -EBUSY;
 393                 goto out;
 394         }
 395
 396         ret = wl1251_chip_wakeup(wl);
 397         if (ret < 0)
 398                 goto out;
 399
 400         ret = wl1251_boot(wl);
 401         if (ret < 0)
 402                 goto out;
 403
 404         ret = wl1251_hw_init(wl);
 405         if (ret < 0)
 406                 goto out;
 407
 408         ret = wl1251_acx_station_id(wl);
 409         if (ret < 0)
 410                 goto out;
 411
 412         wl->state = WL1251_STATE_ON;
 413
 414         wl1251_info("firmware booted (%s)", wl->fw_ver);
 415
 416         /* update hw/fw version info in wiphy struct */
 417         wiphy->hw_version = wl->chip_id;
 418         strncpy(wiphy->fw_version, wl->fw_ver, sizeof(wiphy->fw_version));
 419
 420 out:
 421         if (ret < 0)
 422                 wl1251_power_off(wl);
 423
 424         mutex_unlock(&wl->mutex);
 425
 426         return ret;
 427 }
 428
 429 static void wl1251_op_stop(struct ieee80211_hw *hw)
 430 {
 431         struct wl1251 *wl = hw->priv;
 432
 433         wl1251_info("down");
 434
 435         wl1251_debug(DEBUG_MAC80211, "mac80211 stop");
 436
 437         mutex_lock(&wl->mutex);
 438
 439         WARN_ON(wl->state != WL1251_STATE_ON);
 440
 441         if (wl->scanning) {
 442                 ieee80211_scan_completed(wl->hw, true);
 443                 wl->scanning = false;
 444         }
 445
 446         wl->state = WL1251_STATE_OFF;
 447
 448         wl1251_disable_interrupts(wl);
 449
 450         mutex_unlock(&wl->mutex);
 451
 452         cancel_work_sync(&wl->irq_work);
 453         cancel_work_sync(&wl->tx_work);
 454         cancel_delayed_work_sync(&wl->elp_work);
 455
 456         mutex_lock(&wl->mutex);
 457
 458         /* let's notify MAC80211 about the remaining pending TX frames */
 459         wl1251_tx_flush(wl);
 460         wl1251_power_off(wl);
 461
 462         memset(wl->bssid, 0, ETH_ALEN);
 463         wl->listen_int = 1;
 464         wl->bss_type = MAX_BSS_TYPE;
 465
 466         wl->data_in_count = 0;
 467         wl->rx_counter = 0;
 468         wl->rx_handled = 0;
 469         wl->rx_current_buffer = 0;
 470         wl->rx_last_id = 0;
 471         wl->next_tx_complete = 0;
 472         wl->elp = false;
 473         wl->station_mode = STATION_ACTIVE_MODE;
 474         wl->tx_queue_stopped = false;
 475         wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
 476         wl->rssi_thold = 0;
 477         wl->channel = WL1251_DEFAULT_CHANNEL;
 478
 479         wl1251_debugfs_reset(wl);
 480
 481         mutex_unlock(&wl->mutex);
 482 }
 483
 484 static int wl1251_op_add_interface(struct ieee80211_hw *hw,
 485                                    struct ieee80211_vif *vif)
 486 {
 487         struct wl1251 *wl = hw->priv;
 488         int ret = 0;
 489
 490         wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
 491                      vif->type, vif->addr);
 492
 493         mutex_lock(&wl->mutex);
 494         if (wl->vif) {
 495                 ret = -EBUSY;
 496                 goto out;
 497         }
 498
 499         wl->vif = vif;
 500
 501         switch (vif->type) {
 502         case NL80211_IFTYPE_STATION:
 503                 wl->bss_type = BSS_TYPE_STA_BSS;
 504                 break;
 505         case NL80211_IFTYPE_ADHOC:
 506                 wl->bss_type = BSS_TYPE_IBSS;
 507                 break;
 508         default:
 509                 ret = -EOPNOTSUPP;
 510                 goto out;
 511         }
 512
 513         if (memcmp(wl->mac_addr, vif->addr, ETH_ALEN)) {
 514                 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
 515                 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
 516                 ret = wl1251_acx_station_id(wl);
 517                 if (ret < 0)
 518                         goto out;
 519         }
 520
 521 out:
 522         mutex_unlock(&wl->mutex);
 523         return ret;
 524 }
 525
 526 static void wl1251_op_remove_interface(struct ieee80211_hw *hw,
 527                                          struct ieee80211_vif *vif)
 528 {
 529         struct wl1251 *wl = hw->priv;
 530
 531         mutex_lock(&wl->mutex);
 532         wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface");
 533         wl->vif = NULL;
 534         mutex_unlock(&wl->mutex);
 535 }
 536
 537 static int wl1251_build_qos_null_data(struct wl1251 *wl)
 538 {
 539         struct ieee80211_qos_hdr template;
 540
 541         memset(&template, 0, sizeof(template));
 542
 543         memcpy(template.addr1, wl->bssid, ETH_ALEN);
 544         memcpy(template.addr2, wl->mac_addr, ETH_ALEN);
 545         memcpy(template.addr3, wl->bssid, ETH_ALEN);
 546
 547         template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
 548                                              IEEE80211_STYPE_QOS_NULLFUNC |
 549                                              IEEE80211_FCTL_TODS);
 550
 551         /* FIXME: not sure what priority to use here */
 552         template.qos_ctrl = cpu_to_le16(0);
 553
 554         return wl1251_cmd_template_set(wl, CMD_QOS_NULL_DATA, &template,
 555                                        sizeof(template));
 556 }
 557
 558 static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed)
 559 {
 560         struct wl1251 *wl = hw->priv;
 561         struct ieee80211_conf *conf = &hw->conf;
 562         int channel, ret = 0;
 563
 564         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
 565
 566         wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
 567                      channel,
 568                      conf->flags & IEEE80211_CONF_PS ? "on" : "off",
 569                      conf->power_level);
 570
 571         mutex_lock(&wl->mutex);
 572
 573         ret = wl1251_ps_elp_wakeup(wl);
 574         if (ret < 0)
 575                 goto out;
 576
 577         if (channel != wl->channel) {
 578                 wl->channel = channel;
 579
 580                 ret = wl1251_join(wl, wl->bss_type, wl->channel,
 581                                   wl->beacon_int, wl->dtim_period);
 582                 if (ret < 0)
 583                         goto out_sleep;
 584         }
 585
 586         if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
 587                 wl1251_debug(DEBUG_PSM, "psm enabled");
 588
 589                 wl->psm_requested = true;
 590
 591                 wl->dtim_period = conf->ps_dtim_period;
 592
 593                 ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int,
 594                                                   wl->dtim_period);
 595
 596                 /*
 597                  * mac80211 enables PSM only if we're already associated.
 598                  */
 599                 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
 600                 if (ret < 0)
 601                         goto out_sleep;
 602         } else if (!(conf->flags & IEEE80211_CONF_PS) &&
 603                    wl->psm_requested) {
 604                 wl1251_debug(DEBUG_PSM, "psm disabled");
 605
 606                 wl->psm_requested = false;
 607
 608                 if (wl->station_mode != STATION_ACTIVE_MODE) {
 609                         ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
 610                         if (ret < 0)
 611                                 goto out_sleep;
 612                 }
 613         }
 614
 615         if (changed & IEEE80211_CONF_CHANGE_IDLE) {
 616                 if (conf->flags & IEEE80211_CONF_IDLE) {
 617                         ret = wl1251_ps_set_mode(wl, STATION_IDLE);
 618                         if (ret < 0)
 619                                 goto out_sleep;
 620                 } else {
 621                         ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
 622                         if (ret < 0)
 623                                 goto out_sleep;
 624                         ret = wl1251_join(wl, wl->bss_type, wl->channel,
 625                                           wl->beacon_int, wl->dtim_period);
 626                         if (ret < 0)
 627                                 goto out_sleep;
 628                 }
 629         }
 630
 631         if (conf->power_level != wl->power_level) {
 632                 ret = wl1251_acx_tx_power(wl, conf->power_level);
 633                 if (ret < 0)
 634                         goto out_sleep;
 635
 636                 wl->power_level = conf->power_level;
 637         }
 638
 639 out_sleep:
 640         wl1251_ps_elp_sleep(wl);
 641
 642 out:
 643         mutex_unlock(&wl->mutex);
 644
 645         return ret;
 646 }
 647
 648 #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
 649                                   FIF_ALLMULTI | \
 650                                   FIF_FCSFAIL | \
 651                                   FIF_BCN_PRBRESP_PROMISC | \
 652                                   FIF_CONTROL | \
 653                                   FIF_OTHER_BSS)
 654
 655 static void wl1251_op_configure_filter(struct ieee80211_hw *hw,
 656                                        unsigned int changed,
 657                                        unsigned int *total,u64 multicast)
 658 {
 659         struct wl1251 *wl = hw->priv;
 660
 661         wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter");
 662
 663         *total &= WL1251_SUPPORTED_FILTERS;
 664         changed &= WL1251_SUPPORTED_FILTERS;
 665
 666         if (changed == 0)
 667                 /* no filters which we support changed */
 668                 return;
 669
 670         /* FIXME: wl->rx_config and wl->rx_filter are not protected */
 671
 672         wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
 673         wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
 674
 675         if (*total & FIF_PROMISC_IN_BSS) {
 676                 wl->rx_config |= CFG_BSSID_FILTER_EN;
 677                 wl->rx_config |= CFG_RX_ALL_GOOD;
 678         }
 679         if (*total & FIF_ALLMULTI)
 680                 /*
 681                  * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
 682                  * all multicast frames
 683                  */
 684                 wl->rx_config &= ~CFG_MC_FILTER_EN;
 685         if (*total & FIF_FCSFAIL)
 686                 wl->rx_filter |= CFG_RX_FCS_ERROR;
 687         if (*total & FIF_BCN_PRBRESP_PROMISC) {
 688                 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
 689                 wl->rx_config &= ~CFG_SSID_FILTER_EN;
 690         }
 691         if (*total & FIF_CONTROL)
 692                 wl->rx_filter |= CFG_RX_CTL_EN;
 693         if (*total & FIF_OTHER_BSS)
 694                 wl->rx_filter &= ~CFG_BSSID_FILTER_EN;
 695 }
 696
 697 /* HW encryption */
 698 static int wl1251_set_key_type(struct wl1251 *wl,
 699                                struct wl1251_cmd_set_keys *key,
 700                                enum set_key_cmd cmd,
 701                                struct ieee80211_key_conf *mac80211_key,
 702                                const u8 *addr)
 703 {
 704         switch (mac80211_key->cipher) {
 705         case WLAN_CIPHER_SUITE_WEP40:
 706         case WLAN_CIPHER_SUITE_WEP104:
 707                 if (is_broadcast_ether_addr(addr))
 708                         key->key_type = KEY_WEP_DEFAULT;
 709                 else
 710                         key->key_type = KEY_WEP_ADDR;
 711
 712                 mac80211_key->hw_key_idx = mac80211_key->keyidx;
 713                 break;
 714         case WLAN_CIPHER_SUITE_TKIP:
 715                 if (is_broadcast_ether_addr(addr))
 716                         key->key_type = KEY_TKIP_MIC_GROUP;
 717                 else
 718                         key->key_type = KEY_TKIP_MIC_PAIRWISE;
 719
 720                 mac80211_key->hw_key_idx = mac80211_key->keyidx;
 721                 break;
 722         case WLAN_CIPHER_SUITE_CCMP:
 723                 if (is_broadcast_ether_addr(addr))
 724                         key->key_type = KEY_AES_GROUP;
 725                 else
 726                         key->key_type = KEY_AES_PAIRWISE;
 727                 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
 728                 break;
 729         default:
 730                 wl1251_error("Unknown key cipher 0x%x", mac80211_key->cipher);
 731                 return -EOPNOTSUPP;
 732         }
 733
 734         return 0;
 735 }
 736
 737 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 738                              struct ieee80211_vif *vif,
 739                              struct ieee80211_sta *sta,
 740                              struct ieee80211_key_conf *key)
 741 {
 742         struct wl1251 *wl = hw->priv;
 743         struct wl1251_cmd_set_keys *wl_cmd;
 744         const u8 *addr;
 745         int ret;
 746
 747         static const u8 bcast_addr[ETH_ALEN] =
 748                 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 749
 750         wl1251_debug(DEBUG_MAC80211, "mac80211 set key");
 751
 752         wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
 753         if (!wl_cmd) {
 754                 ret = -ENOMEM;
 755                 goto out;
 756         }
 757
 758         addr = sta ? sta->addr : bcast_addr;
 759
 760         wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
 761         wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
 762         wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
 763                      key->cipher, key->keyidx, key->keylen, key->flags);
 764         wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
 765
 766         if (is_zero_ether_addr(addr)) {
 767                 /* We dont support TX only encryption */
 768                 ret = -EOPNOTSUPP;
 769                 goto out;
 770         }
 771
 772         mutex_lock(&wl->mutex);
 773
 774         ret = wl1251_ps_elp_wakeup(wl);
 775         if (ret < 0)
 776                 goto out_unlock;
 777
 778         switch (cmd) {
 779         case SET_KEY:
 780                 wl_cmd->key_action = KEY_ADD_OR_REPLACE;
 781                 break;
 782         case DISABLE_KEY:
 783                 wl_cmd->key_action = KEY_REMOVE;
 784                 break;
 785         default:
 786                 wl1251_error("Unsupported key cmd 0x%x", cmd);
 787                 break;
 788         }
 789
 790         ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr);
 791         if (ret < 0) {
 792                 wl1251_error("Set KEY type failed");
 793                 goto out_sleep;
 794         }
 795
 796         if (wl_cmd->key_type != KEY_WEP_DEFAULT)
 797                 memcpy(wl_cmd->addr, addr, ETH_ALEN);
 798
 799         if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
 800             (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
 801                 /*
 802                  * We get the key in the following form:
 803                  * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
 804                  * but the target is expecting:
 805                  * TKIP - RX MIC - TX MIC
 806                  */
 807                 memcpy(wl_cmd->key, key->key, 16);
 808                 memcpy(wl_cmd->key + 16, key->key + 24, 8);
 809                 memcpy(wl_cmd->key + 24, key->key + 16, 8);
 810
 811         } else {
 812                 memcpy(wl_cmd->key, key->key, key->keylen);
 813         }
 814         wl_cmd->key_size = key->keylen;
 815
 816         wl_cmd->id = key->keyidx;
 817         wl_cmd->ssid_profile = 0;
 818
 819         wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
 820
 821         ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
 822         if (ret < 0) {
 823                 wl1251_warning("could not set keys");
 824                 goto out_sleep;
 825         }
 826
 827 out_sleep:
 828         wl1251_ps_elp_sleep(wl);
 829
 830 out_unlock:
 831         mutex_unlock(&wl->mutex);
 832
 833 out:
 834         kfree(wl_cmd);
 835
 836         return ret;
 837 }
 838
 839 static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
 840                              struct ieee80211_vif *vif,
 841                              struct cfg80211_scan_request *req)
 842 {
 843         struct wl1251 *wl = hw->priv;
 844         struct sk_buff *skb;
 845         size_t ssid_len = 0;
 846         u8 *ssid = NULL;
 847         int ret;
 848
 849         wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan");
 850
 851         if (req->n_ssids) {
 852                 ssid = req->ssids[0].ssid;
 853                 ssid_len = req->ssids[0].ssid_len;
 854         }
 855
 856         mutex_lock(&wl->mutex);
 857
 858         if (wl->scanning) {
 859                 wl1251_debug(DEBUG_SCAN, "scan already in progress");
 860                 ret = -EINVAL;
 861                 goto out;
 862         }
 863
 864         ret = wl1251_ps_elp_wakeup(wl);
 865         if (ret < 0)
 866                 goto out;
 867
 868         skb = ieee80211_probereq_get(wl->hw, wl->vif, ssid, ssid_len,
 869                                      req->ie, req->ie_len);
 870         if (!skb) {
 871                 ret = -ENOMEM;
 872                 goto out;
 873         }
 874
 875         ret = wl1251_cmd_template_set(wl, CMD_PROBE_REQ, skb->data,
 876                                       skb->len);
 877         dev_kfree_skb(skb);
 878         if (ret < 0)
 879                 goto out_sleep;
 880
 881         ret = wl1251_cmd_trigger_scan_to(wl, 0);
 882         if (ret < 0)
 883                 goto out_sleep;
 884
 885         wl->scanning = true;
 886
 887         ret = wl1251_cmd_scan(wl, ssid, ssid_len, req->channels,
 888                               req->n_channels, WL1251_SCAN_NUM_PROBES);
 889         if (ret < 0) {
 890                 wl->scanning = false;
 891                 goto out_sleep;
 892         }
 893
 894 out_sleep:
 895         wl1251_ps_elp_sleep(wl);
 896
 897 out:
 898         mutex_unlock(&wl->mutex);
 899
 900         return ret;
 901 }
 902
 903 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
 904 {
 905         struct wl1251 *wl = hw->priv;
 906         int ret;
 907
 908         mutex_lock(&wl->mutex);
 909
 910         ret = wl1251_ps_elp_wakeup(wl);
 911         if (ret < 0)
 912                 goto out;
 913
 914         ret = wl1251_acx_rts_threshold(wl, (u16) value);
 915         if (ret < 0)
 916                 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret);
 917
 918         wl1251_ps_elp_sleep(wl);
 919
 920 out:
 921         mutex_unlock(&wl->mutex);
 922
 923         return ret;
 924 }
 925
 926 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
 927                                        struct ieee80211_vif *vif,
 928                                        struct ieee80211_bss_conf *bss_conf,
 929                                        u32 changed)
 930 {
 931         struct wl1251 *wl = hw->priv;
 932         struct sk_buff *beacon, *skb;
 933         int ret;
 934
 935         wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed");
 936
 937         mutex_lock(&wl->mutex);
 938
 939         ret = wl1251_ps_elp_wakeup(wl);
 940         if (ret < 0)
 941                 goto out;
 942
 943         if (changed & BSS_CHANGED_CQM) {
 944                 ret = wl1251_acx_low_rssi(wl, bss_conf->cqm_rssi_thold,
 945                                           WL1251_DEFAULT_LOW_RSSI_WEIGHT,
 946                                           WL1251_DEFAULT_LOW_RSSI_DEPTH,
 947                                           WL1251_ACX_LOW_RSSI_TYPE_EDGE);
 948                 if (ret < 0)
 949                         goto out;
 950                 wl->rssi_thold = bss_conf->cqm_rssi_thold;
 951         }
 952
 953         if (changed & BSS_CHANGED_BSSID) {
 954                 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
 955
 956                 skb = ieee80211_nullfunc_get(wl->hw, wl->vif);
 957                 if (!skb)
 958                         goto out_sleep;
 959
 960                 ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA,
 961                                               skb->data, skb->len);
 962                 dev_kfree_skb(skb);
 963                 if (ret < 0)
 964                         goto out_sleep;
 965
 966                 ret = wl1251_build_qos_null_data(wl);
 967                 if (ret < 0)
 968                         goto out;
 969
 970                 if (wl->bss_type != BSS_TYPE_IBSS) {
 971                         ret = wl1251_join(wl, wl->bss_type, wl->channel,
 972                                           wl->beacon_int, wl->dtim_period);
 973                         if (ret < 0)
 974                                 goto out_sleep;
 975                 }
 976         }
 977
 978         if (changed & BSS_CHANGED_ASSOC) {
 979                 if (bss_conf->assoc) {
 980                         wl->beacon_int = bss_conf->beacon_int;
 981
 982                         skb = ieee80211_pspoll_get(wl->hw, wl->vif);
 983                         if (!skb)
 984                                 goto out_sleep;
 985
 986                         ret = wl1251_cmd_template_set(wl, CMD_PS_POLL,
 987                                                       skb->data,
 988                                                       skb->len);
 989                         dev_kfree_skb(skb);
 990                         if (ret < 0)
 991                                 goto out_sleep;
 992
 993                         ret = wl1251_acx_aid(wl, bss_conf->aid);
 994                         if (ret < 0)
 995                                 goto out_sleep;
 996                 } else {
 997                         /* use defaults when not associated */
 998                         wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
 999                         wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1000                 }
1001         }
1002         if (changed & BSS_CHANGED_ERP_SLOT) {
1003                 if (bss_conf->use_short_slot)
1004                         ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT);
1005                 else
1006                         ret = wl1251_acx_slot(wl, SLOT_TIME_LONG);
1007                 if (ret < 0) {
1008                         wl1251_warning("Set slot time failed %d", ret);
1009                         goto out_sleep;
1010                 }
1011         }
1012
1013         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1014                 if (bss_conf->use_short_preamble)
1015                         wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1016                 else
1017                         wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1018         }
1019
1020         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1021                 if (bss_conf->use_cts_prot)
1022                         ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1023                 else
1024                         ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1025                 if (ret < 0) {
1026                         wl1251_warning("Set ctsprotect failed %d", ret);
1027                         goto out_sleep;
1028                 }
1029         }
1030
1031         if (changed & BSS_CHANGED_BEACON) {
1032                 beacon = ieee80211_beacon_get(hw, vif);
1033                 if (!beacon)
1034                         goto out_sleep;
1035
1036                 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data,
1037                                               beacon->len);
1038
1039                 if (ret < 0) {
1040                         dev_kfree_skb(beacon);
1041                         goto out_sleep;
1042                 }
1043
1044                 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
1045                                               beacon->len);
1046
1047                 dev_kfree_skb(beacon);
1048
1049                 if (ret < 0)
1050                         goto out_sleep;
1051
1052                 ret = wl1251_join(wl, wl->bss_type, wl->beacon_int,
1053                                   wl->channel, wl->dtim_period);
1054
1055                 if (ret < 0)
1056                         goto out_sleep;
1057         }
1058
1059 out_sleep:
1060         wl1251_ps_elp_sleep(wl);
1061
1062 out:
1063         mutex_unlock(&wl->mutex);
1064 }
1065
1066
1067 /* can't be const, mac80211 writes to this */
1068 static struct ieee80211_rate wl1251_rates[] = {
1069         { .bitrate = 10,
1070           .hw_value = 0x1,
1071           .hw_value_short = 0x1, },
1072         { .bitrate = 20,
1073           .hw_value = 0x2,
1074           .hw_value_short = 0x2,
1075           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1076         { .bitrate = 55,
1077           .hw_value = 0x4,
1078           .hw_value_short = 0x4,
1079           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1080         { .bitrate = 110,
1081           .hw_value = 0x20,
1082           .hw_value_short = 0x20,
1083           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1084         { .bitrate = 60,
1085           .hw_value = 0x8,
1086           .hw_value_short = 0x8, },
1087         { .bitrate = 90,
1088           .hw_value = 0x10,
1089           .hw_value_short = 0x10, },
1090         { .bitrate = 120,
1091           .hw_value = 0x40,
1092           .hw_value_short = 0x40, },
1093         { .bitrate = 180,
1094           .hw_value = 0x80,
1095           .hw_value_short = 0x80, },
1096         { .bitrate = 240,
1097           .hw_value = 0x200,
1098           .hw_value_short = 0x200, },
1099         { .bitrate = 360,
1100          .hw_value = 0x400,
1101          .hw_value_short = 0x400, },
1102         { .bitrate = 480,
1103           .hw_value = 0x800,
1104           .hw_value_short = 0x800, },
1105         { .bitrate = 540,
1106           .hw_value = 0x1000,
1107           .hw_value_short = 0x1000, },
1108 };
1109
1110 /* can't be const, mac80211 writes to this */
1111 static struct ieee80211_channel wl1251_channels[] = {
1112         { .hw_value = 1, .center_freq = 2412},
1113         { .hw_value = 2, .center_freq = 2417},
1114         { .hw_value = 3, .center_freq = 2422},
1115         { .hw_value = 4, .center_freq = 2427},
1116         { .hw_value = 5, .center_freq = 2432},
1117         { .hw_value = 6, .center_freq = 2437},
1118         { .hw_value = 7, .center_freq = 2442},
1119         { .hw_value = 8, .center_freq = 2447},
1120         { .hw_value = 9, .center_freq = 2452},
1121         { .hw_value = 10, .center_freq = 2457},
1122         { .hw_value = 11, .center_freq = 2462},
1123         { .hw_value = 12, .center_freq = 2467},
1124         { .hw_value = 13, .center_freq = 2472},
1125 };
1126
1127 static int wl1251_op_conf_tx(struct ieee80211_hw *hw,
1128                              struct ieee80211_vif *vif, u16 queue,
1129                              const struct ieee80211_tx_queue_params *params)
1130 {
1131         enum wl1251_acx_ps_scheme ps_scheme;
1132         struct wl1251 *wl = hw->priv;
1133         int ret;
1134
1135         mutex_lock(&wl->mutex);
1136
1137         wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
1138
1139         ret = wl1251_ps_elp_wakeup(wl);
1140         if (ret < 0)
1141                 goto out;
1142
1143         /* mac80211 uses units of 32 usec */
1144         ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue),
1145                                 params->cw_min, params->cw_max,
1146                                 params->aifs, params->txop * 32);
1147         if (ret < 0)
1148                 goto out_sleep;
1149
1150         if (params->uapsd)
1151                 ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER;
1152         else
1153                 ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY;
1154
1155         ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue),
1156                                  CHANNEL_TYPE_EDCF,
1157                                  wl1251_tx_get_queue(queue), ps_scheme,
1158                                  WL1251_ACX_ACK_POLICY_LEGACY);
1159         if (ret < 0)
1160                 goto out_sleep;
1161
1162 out_sleep:
1163         wl1251_ps_elp_sleep(wl);
1164
1165 out:
1166         mutex_unlock(&wl->mutex);
1167
1168         return ret;
1169 }
1170
1171 static int wl1251_op_get_survey(struct ieee80211_hw *hw, int idx,
1172                                 struct survey_info *survey)
1173 {
1174         struct wl1251 *wl = hw->priv;
1175         struct ieee80211_conf *conf = &hw->conf;
1176
1177         if (idx != 0)
1178                 return -ENOENT;
1179
1180         survey->channel = conf->channel;
1181         survey->filled = SURVEY_INFO_NOISE_DBM;
1182         survey->noise = wl->noise;
1183
1184         return 0;
1185 }
1186
1187 /* can't be const, mac80211 writes to this */
1188 static struct ieee80211_supported_band wl1251_band_2ghz = {
1189         .channels = wl1251_channels,
1190         .n_channels = ARRAY_SIZE(wl1251_channels),
1191         .bitrates = wl1251_rates,
1192         .n_bitrates = ARRAY_SIZE(wl1251_rates),
1193 };
1194
1195 static const struct ieee80211_ops wl1251_ops = {
1196         .start = wl1251_op_start,
1197         .stop = wl1251_op_stop,
1198         .add_interface = wl1251_op_add_interface,
1199         .remove_interface = wl1251_op_remove_interface,
1200         .config = wl1251_op_config,
1201         .configure_filter = wl1251_op_configure_filter,
1202         .tx = wl1251_op_tx,
1203         .set_key = wl1251_op_set_key,
1204         .hw_scan = wl1251_op_hw_scan,
1205         .bss_info_changed = wl1251_op_bss_info_changed,
1206         .set_rts_threshold = wl1251_op_set_rts_threshold,
1207         .conf_tx = wl1251_op_conf_tx,
1208         .get_survey = wl1251_op_get_survey,
1209 };
1210
1211 static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data)
1212 {
1213         unsigned long timeout;
1214
1215         wl1251_reg_write32(wl, EE_ADDR, offset);
1216         wl1251_reg_write32(wl, EE_CTL, EE_CTL_READ);
1217
1218         /* EE_CTL_READ clears when data is ready */
1219         timeout = jiffies + msecs_to_jiffies(100);
1220         while (1) {
1221                 if (!(wl1251_reg_read32(wl, EE_CTL) & EE_CTL_READ))
1222                         break;
1223
1224                 if (time_after(jiffies, timeout))
1225                         return -ETIMEDOUT;
1226
1227                 msleep(1);
1228         }
1229
1230         *data = wl1251_reg_read32(wl, EE_DATA);
1231         return 0;
1232 }
1233
1234 static int wl1251_read_eeprom(struct wl1251 *wl, off_t offset,
1235                               u8 *data, size_t len)
1236 {
1237         size_t i;
1238         int ret;
1239
1240         wl1251_reg_write32(wl, EE_START, 0);
1241
1242         for (i = 0; i < len; i++) {
1243                 ret = wl1251_read_eeprom_byte(wl, offset + i, &data[i]);
1244                 if (ret < 0)
1245                         return ret;
1246         }
1247
1248         return 0;
1249 }
1250
1251 static int wl1251_read_eeprom_mac(struct wl1251 *wl)
1252 {
1253         u8 mac[ETH_ALEN];
1254         int i, ret;
1255
1256         wl1251_set_partition(wl, 0, 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE);
1257
1258         ret = wl1251_read_eeprom(wl, 0x1c, mac, sizeof(mac));
1259         if (ret < 0) {
1260                 wl1251_warning("failed to read MAC address from EEPROM");
1261                 return ret;
1262         }
1263
1264         /* MAC is stored in reverse order */
1265         for (i = 0; i < ETH_ALEN; i++)
1266                 wl->mac_addr[i] = mac[ETH_ALEN - i - 1];
1267
1268         return 0;
1269 }
1270
1271 static int wl1251_register_hw(struct wl1251 *wl)
1272 {
1273         int ret;
1274
1275         if (wl->mac80211_registered)
1276                 return 0;
1277
1278         SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1279
1280         ret = ieee80211_register_hw(wl->hw);
1281         if (ret < 0) {
1282                 wl1251_error("unable to register mac80211 hw: %d", ret);
1283                 return ret;
1284         }
1285
1286         wl->mac80211_registered = true;
1287
1288         wl1251_notice("loaded");
1289
1290         return 0;
1291 }
1292
1293 int wl1251_init_ieee80211(struct wl1251 *wl)
1294 {
1295         int ret;
1296
1297         /* The tx descriptor buffer and the TKIP space */
1298         wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
1299                 + WL1251_TKIP_IV_SPACE;
1300
1301         /* unit us */
1302         /* FIXME: find a proper value */
1303         wl->hw->channel_change_time = 10000;
1304
1305         wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1306                 IEEE80211_HW_SUPPORTS_PS |
1307                 IEEE80211_HW_BEACON_FILTER |
1308                 IEEE80211_HW_SUPPORTS_UAPSD |
1309                 IEEE80211_HW_SUPPORTS_CQM_RSSI;
1310
1311         wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1312                                          BIT(NL80211_IFTYPE_ADHOC);
1313         wl->hw->wiphy->max_scan_ssids = 1;
1314         wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz;
1315
1316         wl->hw->queues = 4;
1317
1318         if (wl->use_eeprom)
1319                 wl1251_read_eeprom_mac(wl);
1320
1321         ret = wl1251_register_hw(wl);
1322         if (ret)
1323                 goto out;
1324
1325         wl1251_debugfs_init(wl);
1326         wl1251_notice("initialized");
1327
1328         ret = 0;
1329
1330 out:
1331         return ret;
1332 }
1333 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211);
1334
1335 struct ieee80211_hw *wl1251_alloc_hw(void)
1336 {
1337         struct ieee80211_hw *hw;
1338         struct wl1251 *wl;
1339         int i;
1340         static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1341
1342         hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops);
1343         if (!hw) {
1344                 wl1251_error("could not alloc ieee80211_hw");
1345                 return ERR_PTR(-ENOMEM);
1346         }
1347
1348         wl = hw->priv;
1349         memset(wl, 0, sizeof(*wl));
1350
1351         wl->hw = hw;
1352
1353         wl->data_in_count = 0;
1354
1355         skb_queue_head_init(&wl->tx_queue);
1356
1357         INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work);
1358         wl->channel = WL1251_DEFAULT_CHANNEL;
1359         wl->scanning = false;
1360         wl->default_key = 0;
1361         wl->listen_int = 1;
1362         wl->rx_counter = 0;
1363         wl->rx_handled = 0;
1364         wl->rx_current_buffer = 0;
1365         wl->rx_last_id = 0;
1366         wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
1367         wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
1368         wl->elp = false;
1369         wl->station_mode = STATION_ACTIVE_MODE;
1370         wl->psm_requested = false;
1371         wl->tx_queue_stopped = false;
1372         wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
1373         wl->rssi_thold = 0;
1374         wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1375         wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1376         wl->vif = NULL;
1377
1378         for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1379                 wl->tx_frames[i] = NULL;
1380
1381         wl->next_tx_complete = 0;
1382
1383         INIT_WORK(&wl->irq_work, wl1251_irq_work);
1384         INIT_WORK(&wl->tx_work, wl1251_tx_work);
1385
1386         /*
1387          * In case our MAC address is not correctly set,
1388          * we use a random but Nokia MAC.
1389          */
1390         memcpy(wl->mac_addr, nokia_oui, 3);
1391         get_random_bytes(wl->mac_addr + 3, 3);
1392
1393         wl->state = WL1251_STATE_OFF;
1394         mutex_init(&wl->mutex);
1395
1396         wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
1397         wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
1398
1399         wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1400         if (!wl->rx_descriptor) {
1401                 wl1251_error("could not allocate memory for rx descriptor");
1402                 ieee80211_free_hw(hw);
1403                 return ERR_PTR(-ENOMEM);
1404         }
1405
1406         return hw;
1407 }
1408 EXPORT_SYMBOL_GPL(wl1251_alloc_hw);
1409
1410 int wl1251_free_hw(struct wl1251 *wl)
1411 {
1412         ieee80211_unregister_hw(wl->hw);
1413
1414         wl1251_debugfs_exit(wl);
1415
1416         kfree(wl->target_mem_map);
1417         kfree(wl->data_path);
1418         vfree(wl->fw);
1419         wl->fw = NULL;
1420         kfree(wl->nvs);
1421         wl->nvs = NULL;
1422
1423         kfree(wl->rx_descriptor);
1424         wl->rx_descriptor = NULL;
1425
1426         ieee80211_free_hw(wl->hw);
1427
1428         return 0;
1429 }
1430 EXPORT_SYMBOL_GPL(wl1251_free_hw);
1431
1432 MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core");
1433 MODULE_LICENSE("GPL");
1434 MODULE_AUTHOR("Kalle Valo <kvalo@adurom.com>");
1435 MODULE_FIRMWARE(WL1251_FW_NAME);