drivers/net/wireless/wl12xx/wl1251_main.c

   1 /*
   2  * This file is part of wl1251
   3  *
   4  * Copyright (C) 2008-2009 Nokia Corporation
   5  *
   6  * Contact: Kalle Valo <kalle.valo@nokia.com>
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License
  10  * version 2 as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  20  * 02110-1301 USA
  21  *
  22  */
  23
  24 #include <linux/module.h>
  25 #include <linux/interrupt.h>
  26 #include <linux/firmware.h>
  27 #include <linux/delay.h>
  28 #include <linux/irq.h>
  29 #include <linux/crc32.h>
  30 #include <linux/etherdevice.h>
  31 #include <linux/vmalloc.h>
  32 #include <linux/slab.h>
  33
  34 #include "wl1251.h"
  35 #include "wl12xx_80211.h"
  36 #include "wl1251_reg.h"
  37 #include "wl1251_io.h"
  38 #include "wl1251_cmd.h"
  39 #include "wl1251_event.h"
  40 #include "wl1251_tx.h"
  41 #include "wl1251_rx.h"
  42 #include "wl1251_ps.h"
  43 #include "wl1251_init.h"
  44 #include "wl1251_debugfs.h"
  45 #include "wl1251_boot.h"
  46
  47 void wl1251_enable_interrupts(struct wl1251 *wl)
  48 {
  49         wl->if_ops->enable_irq(wl);
  50 }
  51
  52 void wl1251_disable_interrupts(struct wl1251 *wl)
  53 {
  54         wl->if_ops->disable_irq(wl);
  55 }
  56
  57 static void wl1251_power_off(struct wl1251 *wl)
  58 {
  59         wl->set_power(false);
  60 }
  61
  62 static void wl1251_power_on(struct wl1251 *wl)
  63 {
  64         wl->set_power(true);
  65 }
  66
  67 static int wl1251_fetch_firmware(struct wl1251 *wl)
  68 {
  69         const struct firmware *fw;
  70         struct device *dev = wiphy_dev(wl->hw->wiphy);
  71         int ret;
  72
  73         ret = request_firmware(&fw, WL1251_FW_NAME, dev);
  74
  75         if (ret < 0) {
  76                 wl1251_error("could not get firmware: %d", ret);
  77                 return ret;
  78         }
  79
  80         if (fw->size % 4) {
  81                 wl1251_error("firmware size is not multiple of 32 bits: %zu",
  82                              fw->size);
  83                 ret = -EILSEQ;
  84                 goto out;
  85         }
  86
  87         wl->fw_len = fw->size;
  88         wl->fw = vmalloc(wl->fw_len);
  89
  90         if (!wl->fw) {
  91                 wl1251_error("could not allocate memory for the firmware");
  92                 ret = -ENOMEM;
  93                 goto out;
  94         }
  95
  96         memcpy(wl->fw, fw->data, wl->fw_len);
  97
  98         ret = 0;
  99
 100 out:
 101         release_firmware(fw);
 102
 103         return ret;
 104 }
 105
 106 static int wl1251_fetch_nvs(struct wl1251 *wl)
 107 {
 108         const struct firmware *fw;
 109         struct device *dev = wiphy_dev(wl->hw->wiphy);
 110         int ret;
 111
 112         ret = request_firmware(&fw, WL1251_NVS_NAME, dev);
 113
 114         if (ret < 0) {
 115                 wl1251_error("could not get nvs file: %d", ret);
 116                 return ret;
 117         }
 118
 119         if (fw->size % 4) {
 120                 wl1251_error("nvs size is not multiple of 32 bits: %zu",
 121                              fw->size);
 122                 ret = -EILSEQ;
 123                 goto out;
 124         }
 125
 126         wl->nvs_len = fw->size;
 127         wl->nvs = kmemdup(fw->data, wl->nvs_len, GFP_KERNEL);
 128
 129         if (!wl->nvs) {
 130                 wl1251_error("could not allocate memory for the nvs file");
 131                 ret = -ENOMEM;
 132                 goto out;
 133         }
 134
 135         ret = 0;
 136
 137 out:
 138         release_firmware(fw);
 139
 140         return ret;
 141 }
 142
 143 static void wl1251_fw_wakeup(struct wl1251 *wl)
 144 {
 145         u32 elp_reg;
 146
 147         elp_reg = ELPCTRL_WAKE_UP;
 148         wl1251_write_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
 149         elp_reg = wl1251_read_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR);
 150
 151         if (!(elp_reg & ELPCTRL_WLAN_READY))
 152                 wl1251_warning("WLAN not ready");
 153 }
 154
 155 static int wl1251_chip_wakeup(struct wl1251 *wl)
 156 {
 157         int ret = 0;
 158
 159         wl1251_power_on(wl);
 160         msleep(WL1251_POWER_ON_SLEEP);
 161         wl->if_ops->reset(wl);
 162
 163         /* We don't need a real memory partition here, because we only want
 164          * to use the registers at this point. */
 165         wl1251_set_partition(wl,
 166                              0x00000000,
 167                              0x00000000,
 168                              REGISTERS_BASE,
 169                              REGISTERS_DOWN_SIZE);
 170
 171         /* ELP module wake up */
 172         wl1251_fw_wakeup(wl);
 173
 174         /* whal_FwCtrl_BootSm() */
 175
 176         /* 0. read chip id from CHIP_ID */
 177         wl->chip_id = wl1251_reg_read32(wl, CHIP_ID_B);
 178
 179         /* 1. check if chip id is valid */
 180
 181         switch (wl->chip_id) {
 182         case CHIP_ID_1251_PG12:
 183                 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG12)",
 184                              wl->chip_id);
 185                 break;
 186         case CHIP_ID_1251_PG11:
 187                 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG11)",
 188                              wl->chip_id);
 189                 break;
 190         case CHIP_ID_1251_PG10:
 191         default:
 192                 wl1251_error("unsupported chip id: 0x%x", wl->chip_id);
 193                 ret = -ENODEV;
 194                 goto out;
 195         }
 196
 197         if (wl->fw == NULL) {
 198                 ret = wl1251_fetch_firmware(wl);
 199                 if (ret < 0)
 200                         goto out;
 201         }
 202
 203         if (wl->nvs == NULL && !wl->use_eeprom) {
 204                 /* No NVS from netlink, try to get it from the filesystem */
 205                 ret = wl1251_fetch_nvs(wl);
 206                 if (ret < 0)
 207                         goto out;
 208         }
 209
 210 out:
 211         return ret;
 212 }
 213
 214 #define WL1251_IRQ_LOOP_COUNT 10
 215 static void wl1251_irq_work(struct work_struct *work)
 216 {
 217         u32 intr, ctr = WL1251_IRQ_LOOP_COUNT;
 218         struct wl1251 *wl =
 219                 container_of(work, struct wl1251, irq_work);
 220         int ret;
 221
 222         mutex_lock(&wl->mutex);
 223
 224         wl1251_debug(DEBUG_IRQ, "IRQ work");
 225
 226         if (wl->state == WL1251_STATE_OFF)
 227                 goto out;
 228
 229         ret = wl1251_ps_elp_wakeup(wl);
 230         if (ret < 0)
 231                 goto out;
 232
 233         wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1251_ACX_INTR_ALL);
 234
 235         intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
 236         wl1251_debug(DEBUG_IRQ, "intr: 0x%x", intr);
 237
 238         do {
 239                 if (wl->data_path) {
 240                         wl->rx_counter = wl1251_mem_read32(
 241                                 wl, wl->data_path->rx_control_addr);
 242
 243                         /* We handle a frmware bug here */
 244                         switch ((wl->rx_counter - wl->rx_handled) & 0xf) {
 245                         case 0:
 246                                 wl1251_debug(DEBUG_IRQ,
 247                                              "RX: FW and host in sync");
 248                                 intr &= ~WL1251_ACX_INTR_RX0_DATA;
 249                                 intr &= ~WL1251_ACX_INTR_RX1_DATA;
 250                                 break;
 251                         case 1:
 252                                 wl1251_debug(DEBUG_IRQ, "RX: FW +1");
 253                                 intr |= WL1251_ACX_INTR_RX0_DATA;
 254                                 intr &= ~WL1251_ACX_INTR_RX1_DATA;
 255                                 break;
 256                         case 2:
 257                                 wl1251_debug(DEBUG_IRQ, "RX: FW +2");
 258                                 intr |= WL1251_ACX_INTR_RX0_DATA;
 259                                 intr |= WL1251_ACX_INTR_RX1_DATA;
 260                                 break;
 261                         default:
 262                                 wl1251_warning(
 263                                         "RX: FW and host out of sync: %d",
 264                                         wl->rx_counter - wl->rx_handled);
 265                                 break;
 266                         }
 267
 268                         wl->rx_handled = wl->rx_counter;
 269
 270                         wl1251_debug(DEBUG_IRQ, "RX counter: %d",
 271                                      wl->rx_counter);
 272                 }
 273
 274                 intr &= wl->intr_mask;
 275
 276                 if (intr == 0) {
 277                         wl1251_debug(DEBUG_IRQ, "INTR is 0");
 278                         goto out_sleep;
 279                 }
 280
 281                 if (intr & WL1251_ACX_INTR_RX0_DATA) {
 282                         wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX0_DATA");
 283                         wl1251_rx(wl);
 284                 }
 285
 286                 if (intr & WL1251_ACX_INTR_RX1_DATA) {
 287                         wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX1_DATA");
 288                         wl1251_rx(wl);
 289                 }
 290
 291                 if (intr & WL1251_ACX_INTR_TX_RESULT) {
 292                         wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_TX_RESULT");
 293                         wl1251_tx_complete(wl);
 294                 }
 295
 296                 if (intr & WL1251_ACX_INTR_EVENT_A) {
 297                         wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_A");
 298                         wl1251_event_handle(wl, 0);
 299                 }
 300
 301                 if (intr & WL1251_ACX_INTR_EVENT_B) {
 302                         wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_B");
 303                         wl1251_event_handle(wl, 1);
 304                 }
 305
 306                 if (intr & WL1251_ACX_INTR_INIT_COMPLETE)
 307                         wl1251_debug(DEBUG_IRQ,
 308                                      "WL1251_ACX_INTR_INIT_COMPLETE");
 309
 310                 if (--ctr == 0)
 311                         break;
 312
 313                 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
 314         } while (intr);
 315
 316 out_sleep:
 317         wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask));
 318         wl1251_ps_elp_sleep(wl);
 319
 320 out:
 321         mutex_unlock(&wl->mutex);
 322 }
 323
 324 static int wl1251_join(struct wl1251 *wl, u8 bss_type, u8 channel,
 325                        u16 beacon_interval, u8 dtim_period)
 326 {
 327         int ret;
 328
 329         ret = wl1251_acx_frame_rates(wl, DEFAULT_HW_GEN_TX_RATE,
 330                                      DEFAULT_HW_GEN_MODULATION_TYPE,
 331                                      wl->tx_mgmt_frm_rate,
 332                                      wl->tx_mgmt_frm_mod);
 333         if (ret < 0)
 334                 goto out;
 335
 336
 337         ret = wl1251_cmd_join(wl, bss_type, channel, beacon_interval,
 338                               dtim_period);
 339         if (ret < 0)
 340                 goto out;
 341
 342         /*
 343          * FIXME: we should wait for JOIN_EVENT_COMPLETE_ID but to simplify
 344          * locking we just sleep instead, for now
 345          */
 346         msleep(10);
 347
 348 out:
 349         return ret;
 350 }
 351
 352 static void wl1251_filter_work(struct work_struct *work)
 353 {
 354         struct wl1251 *wl =
 355                 container_of(work, struct wl1251, filter_work);
 356         int ret;
 357
 358         mutex_lock(&wl->mutex);
 359
 360         if (wl->state == WL1251_STATE_OFF)
 361                 goto out;
 362
 363         ret = wl1251_ps_elp_wakeup(wl);
 364         if (ret < 0)
 365                 goto out;
 366
 367         ret = wl1251_join(wl, wl->bss_type, wl->channel, wl->beacon_int,
 368                           wl->dtim_period);
 369         if (ret < 0)
 370                 goto out_sleep;
 371
 372 out_sleep:
 373         wl1251_ps_elp_sleep(wl);
 374
 375 out:
 376         mutex_unlock(&wl->mutex);
 377 }
 378
 379 static int wl1251_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 380 {
 381         struct wl1251 *wl = hw->priv;
 382
 383         skb_queue_tail(&wl->tx_queue, skb);
 384
 385         /*
 386          * The chip specific setup must run before the first TX packet -
 387          * before that, the tx_work will not be initialized!
 388          */
 389
 390         ieee80211_queue_work(wl->hw, &wl->tx_work);
 391
 392         /*
 393          * The workqueue is slow to process the tx_queue and we need stop
 394          * the queue here, otherwise the queue will get too long.
 395          */
 396         if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_MAX_LENGTH) {
 397                 wl1251_debug(DEBUG_TX, "op_tx: tx_queue full, stop queues");
 398                 ieee80211_stop_queues(wl->hw);
 399
 400                 /*
 401                  * FIXME: this is racy, the variable is not properly
 402                  * protected. Maybe fix this by removing the stupid
 403                  * variable altogether and checking the real queue state?
 404                  */
 405                 wl->tx_queue_stopped = true;
 406         }
 407
 408         return NETDEV_TX_OK;
 409 }
 410
 411 static int wl1251_op_start(struct ieee80211_hw *hw)
 412 {
 413         struct wl1251 *wl = hw->priv;
 414         struct wiphy *wiphy = hw->wiphy;
 415         int ret = 0;
 416
 417         wl1251_debug(DEBUG_MAC80211, "mac80211 start");
 418
 419         mutex_lock(&wl->mutex);
 420
 421         if (wl->state != WL1251_STATE_OFF) {
 422                 wl1251_error("cannot start because not in off state: %d",
 423                              wl->state);
 424                 ret = -EBUSY;
 425                 goto out;
 426         }
 427
 428         ret = wl1251_chip_wakeup(wl);
 429         if (ret < 0)
 430                 goto out;
 431
 432         ret = wl1251_boot(wl);
 433         if (ret < 0)
 434                 goto out;
 435
 436         ret = wl1251_hw_init(wl);
 437         if (ret < 0)
 438                 goto out;
 439
 440         ret = wl1251_acx_station_id(wl);
 441         if (ret < 0)
 442                 goto out;
 443
 444         wl->state = WL1251_STATE_ON;
 445
 446         wl1251_info("firmware booted (%s)", wl->fw_ver);
 447
 448         /* update hw/fw version info in wiphy struct */
 449         wiphy->hw_version = wl->chip_id;
 450         strncpy(wiphy->fw_version, wl->fw_ver, sizeof(wiphy->fw_version));
 451
 452 out:
 453         if (ret < 0)
 454                 wl1251_power_off(wl);
 455
 456         mutex_unlock(&wl->mutex);
 457
 458         return ret;
 459 }
 460
 461 static void wl1251_op_stop(struct ieee80211_hw *hw)
 462 {
 463         struct wl1251 *wl = hw->priv;
 464
 465         wl1251_info("down");
 466
 467         wl1251_debug(DEBUG_MAC80211, "mac80211 stop");
 468
 469         mutex_lock(&wl->mutex);
 470
 471         WARN_ON(wl->state != WL1251_STATE_ON);
 472
 473         if (wl->scanning) {
 474                 mutex_unlock(&wl->mutex);
 475                 ieee80211_scan_completed(wl->hw, true);
 476                 mutex_lock(&wl->mutex);
 477                 wl->scanning = false;
 478         }
 479
 480         wl->state = WL1251_STATE_OFF;
 481
 482         wl1251_disable_interrupts(wl);
 483
 484         mutex_unlock(&wl->mutex);
 485
 486         cancel_work_sync(&wl->irq_work);
 487         cancel_work_sync(&wl->tx_work);
 488         cancel_work_sync(&wl->filter_work);
 489
 490         mutex_lock(&wl->mutex);
 491
 492         /* let's notify MAC80211 about the remaining pending TX frames */
 493         wl1251_tx_flush(wl);
 494         wl1251_power_off(wl);
 495
 496         memset(wl->bssid, 0, ETH_ALEN);
 497         wl->listen_int = 1;
 498         wl->bss_type = MAX_BSS_TYPE;
 499
 500         wl->data_in_count = 0;
 501         wl->rx_counter = 0;
 502         wl->rx_handled = 0;
 503         wl->rx_current_buffer = 0;
 504         wl->rx_last_id = 0;
 505         wl->next_tx_complete = 0;
 506         wl->elp = false;
 507         wl->psm = 0;
 508         wl->tx_queue_stopped = false;
 509         wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
 510         wl->channel = WL1251_DEFAULT_CHANNEL;
 511
 512         wl1251_debugfs_reset(wl);
 513
 514         mutex_unlock(&wl->mutex);
 515 }
 516
 517 static int wl1251_op_add_interface(struct ieee80211_hw *hw,
 518                                    struct ieee80211_vif *vif)
 519 {
 520         struct wl1251 *wl = hw->priv;
 521         int ret = 0;
 522
 523         wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
 524                      vif->type, vif->addr);
 525
 526         mutex_lock(&wl->mutex);
 527         if (wl->vif) {
 528                 ret = -EBUSY;
 529                 goto out;
 530         }
 531
 532         wl->vif = vif;
 533
 534         switch (vif->type) {
 535         case NL80211_IFTYPE_STATION:
 536                 wl->bss_type = BSS_TYPE_STA_BSS;
 537                 break;
 538         case NL80211_IFTYPE_ADHOC:
 539                 wl->bss_type = BSS_TYPE_IBSS;
 540                 break;
 541         default:
 542                 ret = -EOPNOTSUPP;
 543                 goto out;
 544         }
 545
 546         if (memcmp(wl->mac_addr, vif->addr, ETH_ALEN)) {
 547                 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
 548                 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
 549                 ret = wl1251_acx_station_id(wl);
 550                 if (ret < 0)
 551                         goto out;
 552         }
 553
 554 out:
 555         mutex_unlock(&wl->mutex);
 556         return ret;
 557 }
 558
 559 static void wl1251_op_remove_interface(struct ieee80211_hw *hw,
 560                                          struct ieee80211_vif *vif)
 561 {
 562         struct wl1251 *wl = hw->priv;
 563
 564         mutex_lock(&wl->mutex);
 565         wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface");
 566         wl->vif = NULL;
 567         mutex_unlock(&wl->mutex);
 568 }
 569
 570 static int wl1251_build_qos_null_data(struct wl1251 *wl)
 571 {
 572         struct ieee80211_qos_hdr template;
 573
 574         memset(&template, 0, sizeof(template));
 575
 576         memcpy(template.addr1, wl->bssid, ETH_ALEN);
 577         memcpy(template.addr2, wl->mac_addr, ETH_ALEN);
 578         memcpy(template.addr3, wl->bssid, ETH_ALEN);
 579
 580         template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
 581                                              IEEE80211_STYPE_QOS_NULLFUNC |
 582                                              IEEE80211_FCTL_TODS);
 583
 584         /* FIXME: not sure what priority to use here */
 585         template.qos_ctrl = cpu_to_le16(0);
 586
 587         return wl1251_cmd_template_set(wl, CMD_QOS_NULL_DATA, &template,
 588                                        sizeof(template));
 589 }
 590
 591 static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed)
 592 {
 593         struct wl1251 *wl = hw->priv;
 594         struct ieee80211_conf *conf = &hw->conf;
 595         int channel, ret = 0;
 596
 597         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
 598
 599         wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
 600                      channel,
 601                      conf->flags & IEEE80211_CONF_PS ? "on" : "off",
 602                      conf->power_level);
 603
 604         mutex_lock(&wl->mutex);
 605
 606         ret = wl1251_ps_elp_wakeup(wl);
 607         if (ret < 0)
 608                 goto out;
 609
 610         if (channel != wl->channel) {
 611                 wl->channel = channel;
 612
 613                 ret = wl1251_join(wl, wl->bss_type, wl->channel,
 614                                   wl->beacon_int, wl->dtim_period);
 615                 if (ret < 0)
 616                         goto out_sleep;
 617         }
 618
 619         if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
 620                 wl1251_debug(DEBUG_PSM, "psm enabled");
 621
 622                 wl->psm_requested = true;
 623
 624                 wl->dtim_period = conf->ps_dtim_period;
 625
 626                 ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int,
 627                                                   wl->dtim_period);
 628
 629                 /*
 630                  * mac80211 enables PSM only if we're already associated.
 631                  */
 632                 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
 633                 if (ret < 0)
 634                         goto out_sleep;
 635         } else if (!(conf->flags & IEEE80211_CONF_PS) &&
 636                    wl->psm_requested) {
 637                 wl1251_debug(DEBUG_PSM, "psm disabled");
 638
 639                 wl->psm_requested = false;
 640
 641                 if (wl->psm) {
 642                         ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
 643                         if (ret < 0)
 644                                 goto out_sleep;
 645                 }
 646         }
 647
 648         if (conf->power_level != wl->power_level) {
 649                 ret = wl1251_acx_tx_power(wl, conf->power_level);
 650                 if (ret < 0)
 651                         goto out_sleep;
 652
 653                 wl->power_level = conf->power_level;
 654         }
 655
 656 out_sleep:
 657         wl1251_ps_elp_sleep(wl);
 658
 659 out:
 660         mutex_unlock(&wl->mutex);
 661
 662         return ret;
 663 }
 664
 665 #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
 666                                   FIF_ALLMULTI | \
 667                                   FIF_FCSFAIL | \
 668                                   FIF_BCN_PRBRESP_PROMISC | \
 669                                   FIF_CONTROL | \
 670                                   FIF_OTHER_BSS)
 671
 672 static void wl1251_op_configure_filter(struct ieee80211_hw *hw,
 673                                        unsigned int changed,
 674                                        unsigned int *total,u64 multicast)
 675 {
 676         struct wl1251 *wl = hw->priv;
 677
 678         wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter");
 679
 680         *total &= WL1251_SUPPORTED_FILTERS;
 681         changed &= WL1251_SUPPORTED_FILTERS;
 682
 683         if (changed == 0)
 684                 /* no filters which we support changed */
 685                 return;
 686
 687         /* FIXME: wl->rx_config and wl->rx_filter are not protected */
 688
 689         wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
 690         wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
 691
 692         if (*total & FIF_PROMISC_IN_BSS) {
 693                 wl->rx_config |= CFG_BSSID_FILTER_EN;
 694                 wl->rx_config |= CFG_RX_ALL_GOOD;
 695         }
 696         if (*total & FIF_ALLMULTI)
 697                 /*
 698                  * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
 699                  * all multicast frames
 700                  */
 701                 wl->rx_config &= ~CFG_MC_FILTER_EN;
 702         if (*total & FIF_FCSFAIL)
 703                 wl->rx_filter |= CFG_RX_FCS_ERROR;
 704         if (*total & FIF_BCN_PRBRESP_PROMISC) {
 705                 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
 706                 wl->rx_config &= ~CFG_SSID_FILTER_EN;
 707         }
 708         if (*total & FIF_CONTROL)
 709                 wl->rx_filter |= CFG_RX_CTL_EN;
 710         if (*total & FIF_OTHER_BSS)
 711                 wl->rx_filter &= ~CFG_BSSID_FILTER_EN;
 712
 713         /*
 714          * FIXME: workqueues need to be properly cancelled on stop(), for
 715          * now let's just disable changing the filter settings. They will
 716          * be updated any on config().
 717          */
 718         /* schedule_work(&wl->filter_work); */
 719 }
 720
 721 /* HW encryption */
 722 static int wl1251_set_key_type(struct wl1251 *wl,
 723                                struct wl1251_cmd_set_keys *key,
 724                                enum set_key_cmd cmd,
 725                                struct ieee80211_key_conf *mac80211_key,
 726                                const u8 *addr)
 727 {
 728         switch (mac80211_key->cipher) {
 729         case WLAN_CIPHER_SUITE_WEP40:
 730         case WLAN_CIPHER_SUITE_WEP104:
 731                 if (is_broadcast_ether_addr(addr))
 732                         key->key_type = KEY_WEP_DEFAULT;
 733                 else
 734                         key->key_type = KEY_WEP_ADDR;
 735
 736                 mac80211_key->hw_key_idx = mac80211_key->keyidx;
 737                 break;
 738         case WLAN_CIPHER_SUITE_TKIP:
 739                 if (is_broadcast_ether_addr(addr))
 740                         key->key_type = KEY_TKIP_MIC_GROUP;
 741                 else
 742                         key->key_type = KEY_TKIP_MIC_PAIRWISE;
 743
 744                 mac80211_key->hw_key_idx = mac80211_key->keyidx;
 745                 break;
 746         case WLAN_CIPHER_SUITE_CCMP:
 747                 if (is_broadcast_ether_addr(addr))
 748                         key->key_type = KEY_AES_GROUP;
 749                 else
 750                         key->key_type = KEY_AES_PAIRWISE;
 751                 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
 752                 break;
 753         default:
 754                 wl1251_error("Unknown key cipher 0x%x", mac80211_key->cipher);
 755                 return -EOPNOTSUPP;
 756         }
 757
 758         return 0;
 759 }
 760
 761 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 762                              struct ieee80211_vif *vif,
 763                              struct ieee80211_sta *sta,
 764                              struct ieee80211_key_conf *key)
 765 {
 766         struct wl1251 *wl = hw->priv;
 767         struct wl1251_cmd_set_keys *wl_cmd;
 768         const u8 *addr;
 769         int ret;
 770
 771         static const u8 bcast_addr[ETH_ALEN] =
 772                 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 773
 774         wl1251_debug(DEBUG_MAC80211, "mac80211 set key");
 775
 776         wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
 777         if (!wl_cmd) {
 778                 ret = -ENOMEM;
 779                 goto out;
 780         }
 781
 782         addr = sta ? sta->addr : bcast_addr;
 783
 784         wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
 785         wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
 786         wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
 787                      key->cipher, key->keyidx, key->keylen, key->flags);
 788         wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
 789
 790         if (is_zero_ether_addr(addr)) {
 791                 /* We dont support TX only encryption */
 792                 ret = -EOPNOTSUPP;
 793                 goto out;
 794         }
 795
 796         mutex_lock(&wl->mutex);
 797
 798         ret = wl1251_ps_elp_wakeup(wl);
 799         if (ret < 0)
 800                 goto out_unlock;
 801
 802         switch (cmd) {
 803         case SET_KEY:
 804                 wl_cmd->key_action = KEY_ADD_OR_REPLACE;
 805                 break;
 806         case DISABLE_KEY:
 807                 wl_cmd->key_action = KEY_REMOVE;
 808                 break;
 809         default:
 810                 wl1251_error("Unsupported key cmd 0x%x", cmd);
 811                 break;
 812         }
 813
 814         ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr);
 815         if (ret < 0) {
 816                 wl1251_error("Set KEY type failed");
 817                 goto out_sleep;
 818         }
 819
 820         if (wl_cmd->key_type != KEY_WEP_DEFAULT)
 821                 memcpy(wl_cmd->addr, addr, ETH_ALEN);
 822
 823         if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
 824             (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
 825                 /*
 826                  * We get the key in the following form:
 827                  * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
 828                  * but the target is expecting:
 829                  * TKIP - RX MIC - TX MIC
 830                  */
 831                 memcpy(wl_cmd->key, key->key, 16);
 832                 memcpy(wl_cmd->key + 16, key->key + 24, 8);
 833                 memcpy(wl_cmd->key + 24, key->key + 16, 8);
 834
 835         } else {
 836                 memcpy(wl_cmd->key, key->key, key->keylen);
 837         }
 838         wl_cmd->key_size = key->keylen;
 839
 840         wl_cmd->id = key->keyidx;
 841         wl_cmd->ssid_profile = 0;
 842
 843         wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
 844
 845         ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
 846         if (ret < 0) {
 847                 wl1251_warning("could not set keys");
 848                 goto out_sleep;
 849         }
 850
 851 out_sleep:
 852         wl1251_ps_elp_sleep(wl);
 853
 854 out_unlock:
 855         mutex_unlock(&wl->mutex);
 856
 857 out:
 858         kfree(wl_cmd);
 859
 860         return ret;
 861 }
 862
 863 static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
 864                              struct ieee80211_vif *vif,
 865                              struct cfg80211_scan_request *req)
 866 {
 867         struct wl1251 *wl = hw->priv;
 868         struct sk_buff *skb;
 869         size_t ssid_len = 0;
 870         u8 *ssid = NULL;
 871         int ret;
 872
 873         wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan");
 874
 875         if (req->n_ssids) {
 876                 ssid = req->ssids[0].ssid;
 877                 ssid_len = req->ssids[0].ssid_len;
 878         }
 879
 880         mutex_lock(&wl->mutex);
 881
 882         if (wl->scanning) {
 883                 wl1251_debug(DEBUG_SCAN, "scan already in progress");
 884                 ret = -EINVAL;
 885                 goto out;
 886         }
 887
 888         ret = wl1251_ps_elp_wakeup(wl);
 889         if (ret < 0)
 890                 goto out;
 891
 892         skb = ieee80211_probereq_get(wl->hw, wl->vif, ssid, ssid_len,
 893                                      req->ie, req->ie_len);
 894         if (!skb) {
 895                 ret = -ENOMEM;
 896                 goto out;
 897         }
 898
 899         ret = wl1251_cmd_template_set(wl, CMD_PROBE_REQ, skb->data,
 900                                       skb->len);
 901         dev_kfree_skb(skb);
 902         if (ret < 0)
 903                 goto out_sleep;
 904
 905         ret = wl1251_cmd_trigger_scan_to(wl, 0);
 906         if (ret < 0)
 907                 goto out_sleep;
 908
 909         wl->scanning = true;
 910
 911         ret = wl1251_cmd_scan(wl, ssid, ssid_len, req->channels,
 912                               req->n_channels, WL1251_SCAN_NUM_PROBES);
 913         if (ret < 0) {
 914                 wl->scanning = false;
 915                 goto out_sleep;
 916         }
 917
 918 out_sleep:
 919         wl1251_ps_elp_sleep(wl);
 920
 921 out:
 922         mutex_unlock(&wl->mutex);
 923
 924         return ret;
 925 }
 926
 927 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
 928 {
 929         struct wl1251 *wl = hw->priv;
 930         int ret;
 931
 932         mutex_lock(&wl->mutex);
 933
 934         ret = wl1251_ps_elp_wakeup(wl);
 935         if (ret < 0)
 936                 goto out;
 937
 938         ret = wl1251_acx_rts_threshold(wl, (u16) value);
 939         if (ret < 0)
 940                 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret);
 941
 942         wl1251_ps_elp_sleep(wl);
 943
 944 out:
 945         mutex_unlock(&wl->mutex);
 946
 947         return ret;
 948 }
 949
 950 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
 951                                        struct ieee80211_vif *vif,
 952                                        struct ieee80211_bss_conf *bss_conf,
 953                                        u32 changed)
 954 {
 955         struct wl1251 *wl = hw->priv;
 956         struct sk_buff *beacon, *skb;
 957         int ret;
 958
 959         wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed");
 960
 961         mutex_lock(&wl->mutex);
 962
 963         ret = wl1251_ps_elp_wakeup(wl);
 964         if (ret < 0)
 965                 goto out;
 966
 967         if (changed & BSS_CHANGED_BSSID) {
 968                 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
 969
 970                 skb = ieee80211_nullfunc_get(wl->hw, wl->vif);
 971                 if (!skb)
 972                         goto out_sleep;
 973
 974                 ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA,
 975                                               skb->data, skb->len);
 976                 dev_kfree_skb(skb);
 977                 if (ret < 0)
 978                         goto out_sleep;
 979
 980                 ret = wl1251_build_qos_null_data(wl);
 981                 if (ret < 0)
 982                         goto out;
 983
 984                 if (wl->bss_type != BSS_TYPE_IBSS) {
 985                         ret = wl1251_join(wl, wl->bss_type, wl->channel,
 986                                           wl->beacon_int, wl->dtim_period);
 987                         if (ret < 0)
 988                                 goto out_sleep;
 989                 }
 990         }
 991
 992         if (changed & BSS_CHANGED_ASSOC) {
 993                 if (bss_conf->assoc) {
 994                         wl->beacon_int = bss_conf->beacon_int;
 995
 996                         skb = ieee80211_pspoll_get(wl->hw, wl->vif);
 997                         if (!skb)
 998                                 goto out_sleep;
 999
1000                         ret = wl1251_cmd_template_set(wl, CMD_PS_POLL,
1001                                                       skb->data,
1002                                                       skb->len);
1003                         dev_kfree_skb(skb);
1004                         if (ret < 0)
1005                                 goto out_sleep;
1006
1007                         ret = wl1251_acx_aid(wl, bss_conf->aid);
1008                         if (ret < 0)
1009                                 goto out_sleep;
1010                 } else {
1011                         /* use defaults when not associated */
1012                         wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1013                         wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1014                 }
1015         }
1016         if (changed & BSS_CHANGED_ERP_SLOT) {
1017                 if (bss_conf->use_short_slot)
1018                         ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT);
1019                 else
1020                         ret = wl1251_acx_slot(wl, SLOT_TIME_LONG);
1021                 if (ret < 0) {
1022                         wl1251_warning("Set slot time failed %d", ret);
1023                         goto out_sleep;
1024                 }
1025         }
1026
1027         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1028                 if (bss_conf->use_short_preamble)
1029                         wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1030                 else
1031                         wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1032         }
1033
1034         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1035                 if (bss_conf->use_cts_prot)
1036                         ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1037                 else
1038                         ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1039                 if (ret < 0) {
1040                         wl1251_warning("Set ctsprotect failed %d", ret);
1041                         goto out_sleep;
1042                 }
1043         }
1044
1045         if (changed & BSS_CHANGED_BEACON) {
1046                 beacon = ieee80211_beacon_get(hw, vif);
1047                 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data,
1048                                               beacon->len);
1049
1050                 if (ret < 0) {
1051                         dev_kfree_skb(beacon);
1052                         goto out_sleep;
1053                 }
1054
1055                 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
1056                                               beacon->len);
1057
1058                 dev_kfree_skb(beacon);
1059
1060                 if (ret < 0)
1061                         goto out_sleep;
1062
1063                 ret = wl1251_join(wl, wl->bss_type, wl->beacon_int,
1064                                   wl->channel, wl->dtim_period);
1065
1066                 if (ret < 0)
1067                         goto out_sleep;
1068         }
1069
1070 out_sleep:
1071         wl1251_ps_elp_sleep(wl);
1072
1073 out:
1074         mutex_unlock(&wl->mutex);
1075 }
1076
1077
1078 /* can't be const, mac80211 writes to this */
1079 static struct ieee80211_rate wl1251_rates[] = {
1080         { .bitrate = 10,
1081           .hw_value = 0x1,
1082           .hw_value_short = 0x1, },
1083         { .bitrate = 20,
1084           .hw_value = 0x2,
1085           .hw_value_short = 0x2,
1086           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1087         { .bitrate = 55,
1088           .hw_value = 0x4,
1089           .hw_value_short = 0x4,
1090           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1091         { .bitrate = 110,
1092           .hw_value = 0x20,
1093           .hw_value_short = 0x20,
1094           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1095         { .bitrate = 60,
1096           .hw_value = 0x8,
1097           .hw_value_short = 0x8, },
1098         { .bitrate = 90,
1099           .hw_value = 0x10,
1100           .hw_value_short = 0x10, },
1101         { .bitrate = 120,
1102           .hw_value = 0x40,
1103           .hw_value_short = 0x40, },
1104         { .bitrate = 180,
1105           .hw_value = 0x80,
1106           .hw_value_short = 0x80, },
1107         { .bitrate = 240,
1108           .hw_value = 0x200,
1109           .hw_value_short = 0x200, },
1110         { .bitrate = 360,
1111          .hw_value = 0x400,
1112          .hw_value_short = 0x400, },
1113         { .bitrate = 480,
1114           .hw_value = 0x800,
1115           .hw_value_short = 0x800, },
1116         { .bitrate = 540,
1117           .hw_value = 0x1000,
1118           .hw_value_short = 0x1000, },
1119 };
1120
1121 /* can't be const, mac80211 writes to this */
1122 static struct ieee80211_channel wl1251_channels[] = {
1123         { .hw_value = 1, .center_freq = 2412},
1124         { .hw_value = 2, .center_freq = 2417},
1125         { .hw_value = 3, .center_freq = 2422},
1126         { .hw_value = 4, .center_freq = 2427},
1127         { .hw_value = 5, .center_freq = 2432},
1128         { .hw_value = 6, .center_freq = 2437},
1129         { .hw_value = 7, .center_freq = 2442},
1130         { .hw_value = 8, .center_freq = 2447},
1131         { .hw_value = 9, .center_freq = 2452},
1132         { .hw_value = 10, .center_freq = 2457},
1133         { .hw_value = 11, .center_freq = 2462},
1134         { .hw_value = 12, .center_freq = 2467},
1135         { .hw_value = 13, .center_freq = 2472},
1136 };
1137
1138 static int wl1251_op_conf_tx(struct ieee80211_hw *hw, u16 queue,
1139                              const struct ieee80211_tx_queue_params *params)
1140 {
1141         enum wl1251_acx_ps_scheme ps_scheme;
1142         struct wl1251 *wl = hw->priv;
1143         int ret;
1144
1145         mutex_lock(&wl->mutex);
1146
1147         wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
1148
1149         ret = wl1251_ps_elp_wakeup(wl);
1150         if (ret < 0)
1151                 goto out;
1152
1153         /* mac80211 uses units of 32 usec */
1154         ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue),
1155                                 params->cw_min, params->cw_max,
1156                                 params->aifs, params->txop * 32);
1157         if (ret < 0)
1158                 goto out_sleep;
1159
1160         if (params->uapsd)
1161                 ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER;
1162         else
1163                 ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY;
1164
1165         ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue),
1166                                  CHANNEL_TYPE_EDCF,
1167                                  wl1251_tx_get_queue(queue), ps_scheme,
1168                                  WL1251_ACX_ACK_POLICY_LEGACY);
1169         if (ret < 0)
1170                 goto out_sleep;
1171
1172 out_sleep:
1173         wl1251_ps_elp_sleep(wl);
1174
1175 out:
1176         mutex_unlock(&wl->mutex);
1177
1178         return ret;
1179 }
1180
1181 static int wl1251_op_get_survey(struct ieee80211_hw *hw, int idx,
1182                                 struct survey_info *survey)
1183 {
1184         struct wl1251 *wl = hw->priv;
1185         struct ieee80211_conf *conf = &hw->conf;
1186
1187         if (idx != 0)
1188                 return -ENOENT;
1189
1190         survey->channel = conf->channel;
1191         survey->filled = SURVEY_INFO_NOISE_DBM;
1192         survey->noise = wl->noise;
1193
1194         return 0;
1195 }
1196
1197 /* can't be const, mac80211 writes to this */
1198 static struct ieee80211_supported_band wl1251_band_2ghz = {
1199         .channels = wl1251_channels,
1200         .n_channels = ARRAY_SIZE(wl1251_channels),
1201         .bitrates = wl1251_rates,
1202         .n_bitrates = ARRAY_SIZE(wl1251_rates),
1203 };
1204
1205 static const struct ieee80211_ops wl1251_ops = {
1206         .start = wl1251_op_start,
1207         .stop = wl1251_op_stop,
1208         .add_interface = wl1251_op_add_interface,
1209         .remove_interface = wl1251_op_remove_interface,
1210         .config = wl1251_op_config,
1211         .configure_filter = wl1251_op_configure_filter,
1212         .tx = wl1251_op_tx,
1213         .set_key = wl1251_op_set_key,
1214         .hw_scan = wl1251_op_hw_scan,
1215         .bss_info_changed = wl1251_op_bss_info_changed,
1216         .set_rts_threshold = wl1251_op_set_rts_threshold,
1217         .conf_tx = wl1251_op_conf_tx,
1218         .get_survey = wl1251_op_get_survey,
1219 };
1220
1221 static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data)
1222 {
1223         unsigned long timeout;
1224
1225         wl1251_reg_write32(wl, EE_ADDR, offset);
1226         wl1251_reg_write32(wl, EE_CTL, EE_CTL_READ);
1227
1228         /* EE_CTL_READ clears when data is ready */
1229         timeout = jiffies + msecs_to_jiffies(100);
1230         while (1) {
1231                 if (!(wl1251_reg_read32(wl, EE_CTL) & EE_CTL_READ))
1232                         break;
1233
1234                 if (time_after(jiffies, timeout))
1235                         return -ETIMEDOUT;
1236
1237                 msleep(1);
1238         }
1239
1240         *data = wl1251_reg_read32(wl, EE_DATA);
1241         return 0;
1242 }
1243
1244 static int wl1251_read_eeprom(struct wl1251 *wl, off_t offset,
1245                               u8 *data, size_t len)
1246 {
1247         size_t i;
1248         int ret;
1249
1250         wl1251_reg_write32(wl, EE_START, 0);
1251
1252         for (i = 0; i < len; i++) {
1253                 ret = wl1251_read_eeprom_byte(wl, offset + i, &data[i]);
1254                 if (ret < 0)
1255                         return ret;
1256         }
1257
1258         return 0;
1259 }
1260
1261 static int wl1251_read_eeprom_mac(struct wl1251 *wl)
1262 {
1263         u8 mac[ETH_ALEN];
1264         int i, ret;
1265
1266         wl1251_set_partition(wl, 0, 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE);
1267
1268         ret = wl1251_read_eeprom(wl, 0x1c, mac, sizeof(mac));
1269         if (ret < 0) {
1270                 wl1251_warning("failed to read MAC address from EEPROM");
1271                 return ret;
1272         }
1273
1274         /* MAC is stored in reverse order */
1275         for (i = 0; i < ETH_ALEN; i++)
1276                 wl->mac_addr[i] = mac[ETH_ALEN - i - 1];
1277
1278         return 0;
1279 }
1280
1281 static int wl1251_register_hw(struct wl1251 *wl)
1282 {
1283         int ret;
1284
1285         if (wl->mac80211_registered)
1286                 return 0;
1287
1288         SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1289
1290         ret = ieee80211_register_hw(wl->hw);
1291         if (ret < 0) {
1292                 wl1251_error("unable to register mac80211 hw: %d", ret);
1293                 return ret;
1294         }
1295
1296         wl->mac80211_registered = true;
1297
1298         wl1251_notice("loaded");
1299
1300         return 0;
1301 }
1302
1303 int wl1251_init_ieee80211(struct wl1251 *wl)
1304 {
1305         int ret;
1306
1307         /* The tx descriptor buffer and the TKIP space */
1308         wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
1309                 + WL1251_TKIP_IV_SPACE;
1310
1311         /* unit us */
1312         /* FIXME: find a proper value */
1313         wl->hw->channel_change_time = 10000;
1314
1315         wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1316                 IEEE80211_HW_SUPPORTS_PS |
1317                 IEEE80211_HW_BEACON_FILTER |
1318                 IEEE80211_HW_SUPPORTS_UAPSD;
1319
1320         wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1321         wl->hw->wiphy->max_scan_ssids = 1;
1322         wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz;
1323
1324         wl->hw->queues = 4;
1325
1326         if (wl->use_eeprom)
1327                 wl1251_read_eeprom_mac(wl);
1328
1329         ret = wl1251_register_hw(wl);
1330         if (ret)
1331                 goto out;
1332
1333         wl1251_debugfs_init(wl);
1334         wl1251_notice("initialized");
1335
1336         ret = 0;
1337
1338 out:
1339         return ret;
1340 }
1341 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211);
1342
1343 struct ieee80211_hw *wl1251_alloc_hw(void)
1344 {
1345         struct ieee80211_hw *hw;
1346         struct wl1251 *wl;
1347         int i;
1348         static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1349
1350         hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops);
1351         if (!hw) {
1352                 wl1251_error("could not alloc ieee80211_hw");
1353                 return ERR_PTR(-ENOMEM);
1354         }
1355
1356         wl = hw->priv;
1357         memset(wl, 0, sizeof(*wl));
1358
1359         wl->hw = hw;
1360
1361         wl->data_in_count = 0;
1362
1363         skb_queue_head_init(&wl->tx_queue);
1364
1365         INIT_WORK(&wl->filter_work, wl1251_filter_work);
1366         INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work);
1367         wl->channel = WL1251_DEFAULT_CHANNEL;
1368         wl->scanning = false;
1369         wl->default_key = 0;
1370         wl->listen_int = 1;
1371         wl->rx_counter = 0;
1372         wl->rx_handled = 0;
1373         wl->rx_current_buffer = 0;
1374         wl->rx_last_id = 0;
1375         wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
1376         wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
1377         wl->elp = false;
1378         wl->psm = 0;
1379         wl->psm_requested = false;
1380         wl->tx_queue_stopped = false;
1381         wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
1382         wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1383         wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1384         wl->vif = NULL;
1385
1386         for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1387                 wl->tx_frames[i] = NULL;
1388
1389         wl->next_tx_complete = 0;
1390
1391         INIT_WORK(&wl->irq_work, wl1251_irq_work);
1392         INIT_WORK(&wl->tx_work, wl1251_tx_work);
1393
1394         /*
1395          * In case our MAC address is not correctly set,
1396          * we use a random but Nokia MAC.
1397          */
1398         memcpy(wl->mac_addr, nokia_oui, 3);
1399         get_random_bytes(wl->mac_addr + 3, 3);
1400
1401         wl->state = WL1251_STATE_OFF;
1402         mutex_init(&wl->mutex);
1403
1404         wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
1405         wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
1406
1407         wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1408         if (!wl->rx_descriptor) {
1409                 wl1251_error("could not allocate memory for rx descriptor");
1410                 ieee80211_free_hw(hw);
1411                 return ERR_PTR(-ENOMEM);
1412         }
1413
1414         return hw;
1415 }
1416 EXPORT_SYMBOL_GPL(wl1251_alloc_hw);
1417
1418 int wl1251_free_hw(struct wl1251 *wl)
1419 {
1420         ieee80211_unregister_hw(wl->hw);
1421
1422         wl1251_debugfs_exit(wl);
1423
1424         kfree(wl->target_mem_map);
1425         kfree(wl->data_path);
1426         vfree(wl->fw);
1427         wl->fw = NULL;
1428         kfree(wl->nvs);
1429         wl->nvs = NULL;
1430
1431         kfree(wl->rx_descriptor);
1432         wl->rx_descriptor = NULL;
1433
1434         ieee80211_free_hw(wl->hw);
1435
1436         return 0;
1437 }
1438 EXPORT_SYMBOL_GPL(wl1251_free_hw);
1439
1440 MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core");
1441 MODULE_LICENSE("GPL");
1442 MODULE_AUTHOR("Kalle Valo <kalle.valo@nokia.com>");
1443 MODULE_FIRMWARE(WL1251_FW_NAME);