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 #if (LINUX_VERSION_CODE == KERNEL_VERSION(2,6,28))
  30 #include <linux/device.h>
  31 #endif
  32 #include <linux/crc32.h>
  33 #include <linux/etherdevice.h>
  34 #include <linux/vmalloc.h>
  35
  36 #include "wl1251.h"
  37 #include "wl12xx_80211.h"
  38 #include "wl1251_reg.h"
  39 #include "wl1251_io.h"
  40 #include "wl1251_cmd.h"
  41 #include "wl1251_event.h"
  42 #include "wl1251_tx.h"
  43 #include "wl1251_rx.h"
  44 #include "wl1251_ps.h"
  45 #include "wl1251_init.h"
  46 #include "wl1251_debugfs.h"
  47 #include "wl1251_boot.h"
  48
  49 void wl1251_enable_interrupts(struct wl1251 *wl)
  50 {
  51         wl->if_ops->enable_irq(wl);
  52 }
  53
  54 void wl1251_disable_interrupts(struct wl1251 *wl)
  55 {
  56         wl->if_ops->disable_irq(wl);
  57 }
  58
  59 static void wl1251_power_off(struct wl1251 *wl)
  60 {
  61         wl->set_power(false);
  62 }
  63
  64 static void wl1251_power_on(struct wl1251 *wl)
  65 {
  66         wl->set_power(true);
  67 }
  68
  69 static int wl1251_fetch_firmware(struct wl1251 *wl)
  70 {
  71         const struct firmware *fw;
  72         struct device *dev = wiphy_dev(wl->hw->wiphy);
  73         int ret;
  74
  75         ret = request_firmware(&fw, WL1251_FW_NAME, dev);
  76
  77         if (ret < 0) {
  78                 wl1251_error("could not get firmware: %d", ret);
  79                 return ret;
  80         }
  81
  82         if (fw->size % 4) {
  83                 wl1251_error("firmware size is not multiple of 32 bits: %zu",
  84                              fw->size);
  85                 ret = -EILSEQ;
  86                 goto out;
  87         }
  88
  89         wl->fw_len = fw->size;
  90         wl->fw = vmalloc(wl->fw_len);
  91
  92         if (!wl->fw) {
  93                 wl1251_error("could not allocate memory for the firmware");
  94                 ret = -ENOMEM;
  95                 goto out;
  96         }
  97
  98         memcpy(wl->fw, fw->data, wl->fw_len);
  99
 100         ret = 0;
 101
 102 out:
 103         release_firmware(fw);
 104
 105         return ret;
 106 }
 107
 108 static int wl1251_fetch_nvs(struct wl1251 *wl)
 109 {
 110         const struct firmware *fw;
 111         struct device *dev = wiphy_dev(wl->hw->wiphy);
 112         int ret;
 113
 114         ret = request_firmware(&fw, WL1251_NVS_NAME, dev);
 115
 116         if (ret < 0) {
 117                 wl1251_error("could not get nvs file: %d", ret);
 118                 return ret;
 119         }
 120
 121         if (fw->size % 4) {
 122                 wl1251_error("nvs size is not multiple of 32 bits: %zu",
 123                              fw->size);
 124                 ret = -EILSEQ;
 125                 goto out;
 126         }
 127
 128         wl->nvs_len = fw->size;
 129         wl->nvs = kmemdup(fw->data, wl->nvs_len, GFP_KERNEL);
 130
 131         if (!wl->nvs) {
 132                 wl1251_error("could not allocate memory for the nvs file");
 133                 ret = -ENOMEM;
 134                 goto out;
 135         }
 136
 137         ret = 0;
 138
 139 out:
 140         release_firmware(fw);
 141
 142         return ret;
 143 }
 144
 145 static void wl1251_fw_wakeup(struct wl1251 *wl)
 146 {
 147         u32 elp_reg;
 148
 149         elp_reg = ELPCTRL_WAKE_UP;
 150         wl1251_write_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
 151         elp_reg = wl1251_read_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR);
 152
 153         if (!(elp_reg & ELPCTRL_WLAN_READY))
 154                 wl1251_warning("WLAN not ready");
 155 }
 156
 157 static int wl1251_chip_wakeup(struct wl1251 *wl)
 158 {
 159         int ret = 0;
 160
 161         wl1251_power_on(wl);
 162         msleep(WL1251_POWER_ON_SLEEP);
 163         wl->if_ops->reset(wl);
 164
 165         /* We don't need a real memory partition here, because we only want
 166          * to use the registers at this point. */
 167         wl1251_set_partition(wl,
 168                              0x00000000,
 169                              0x00000000,
 170                              REGISTERS_BASE,
 171                              REGISTERS_DOWN_SIZE);
 172
 173         /* ELP module wake up */
 174         wl1251_fw_wakeup(wl);
 175
 176         /* whal_FwCtrl_BootSm() */
 177
 178         /* 0. read chip id from CHIP_ID */
 179         wl->chip_id = wl1251_reg_read32(wl, CHIP_ID_B);
 180
 181         /* 1. check if chip id is valid */
 182
 183         switch (wl->chip_id) {
 184         case CHIP_ID_1251_PG12:
 185                 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG12)",
 186                              wl->chip_id);
 187                 break;
 188         case CHIP_ID_1251_PG11:
 189                 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG11)",
 190                              wl->chip_id);
 191                 break;
 192         case CHIP_ID_1251_PG10:
 193         default:
 194                 wl1251_error("unsupported chip id: 0x%x", wl->chip_id);
 195                 ret = -ENODEV;
 196                 goto out;
 197         }
 198
 199         if (wl->fw == NULL) {
 200                 ret = wl1251_fetch_firmware(wl);
 201                 if (ret < 0)
 202                         goto out;
 203         }
 204
 205         if (wl->nvs == NULL && !wl->use_eeprom) {
 206                 /* No NVS from netlink, try to get it from the filesystem */
 207                 ret = wl1251_fetch_nvs(wl);
 208                 if (ret < 0)
 209                         goto out;
 210         }
 211
 212 out:
 213         return ret;
 214 }
 215
 216 #define WL1251_IRQ_LOOP_COUNT 10
 217 static void wl1251_irq_work(struct work_struct *work)
 218 {
 219         u32 intr, ctr = WL1251_IRQ_LOOP_COUNT;
 220         struct wl1251 *wl =
 221                 container_of(work, struct wl1251, irq_work);
 222         int ret;
 223
 224         mutex_lock(&wl->mutex);
 225
 226         wl1251_debug(DEBUG_IRQ, "IRQ work");
 227
 228         if (wl->state == WL1251_STATE_OFF)
 229                 goto out;
 230
 231         ret = wl1251_ps_elp_wakeup(wl);
 232         if (ret < 0)
 233                 goto out;
 234
 235         wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1251_ACX_INTR_ALL);
 236
 237         intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
 238         wl1251_debug(DEBUG_IRQ, "intr: 0x%x", intr);
 239
 240         do {
 241                 if (wl->data_path) {
 242                         wl->rx_counter = wl1251_mem_read32(
 243                                 wl, wl->data_path->rx_control_addr);
 244
 245                         /* We handle a frmware bug here */
 246                         switch ((wl->rx_counter - wl->rx_handled) & 0xf) {
 247                         case 0:
 248                                 wl1251_debug(DEBUG_IRQ,
 249                                              "RX: FW and host in sync");
 250                                 intr &= ~WL1251_ACX_INTR_RX0_DATA;
 251                                 intr &= ~WL1251_ACX_INTR_RX1_DATA;
 252                                 break;
 253                         case 1:
 254                                 wl1251_debug(DEBUG_IRQ, "RX: FW +1");
 255                                 intr |= WL1251_ACX_INTR_RX0_DATA;
 256                                 intr &= ~WL1251_ACX_INTR_RX1_DATA;
 257                                 break;
 258                         case 2:
 259                                 wl1251_debug(DEBUG_IRQ, "RX: FW +2");
 260                                 intr |= WL1251_ACX_INTR_RX0_DATA;
 261                                 intr |= WL1251_ACX_INTR_RX1_DATA;
 262                                 break;
 263                         default:
 264                                 wl1251_warning(
 265                                         "RX: FW and host out of sync: %d",
 266                                         wl->rx_counter - wl->rx_handled);
 267                                 break;
 268                         }
 269
 270                         wl->rx_handled = wl->rx_counter;
 271
 272                         wl1251_debug(DEBUG_IRQ, "RX counter: %d",
 273                                      wl->rx_counter);
 274                 }
 275
 276                 intr &= wl->intr_mask;
 277
 278                 if (intr == 0) {
 279                         wl1251_debug(DEBUG_IRQ, "INTR is 0");
 280                         goto out_sleep;
 281                 }
 282
 283                 if (intr & WL1251_ACX_INTR_RX0_DATA) {
 284                         wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX0_DATA");
 285                         wl1251_rx(wl);
 286                 }
 287
 288                 if (intr & WL1251_ACX_INTR_RX1_DATA) {
 289                         wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX1_DATA");
 290                         wl1251_rx(wl);
 291                 }
 292
 293                 if (intr & WL1251_ACX_INTR_TX_RESULT) {
 294                         wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_TX_RESULT");
 295                         wl1251_tx_complete(wl);
 296                 }
 297
 298                 if (intr & WL1251_ACX_INTR_EVENT_A) {
 299                         wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_A");
 300                         wl1251_event_handle(wl, 0);
 301                 }
 302
 303                 if (intr & WL1251_ACX_INTR_EVENT_B) {
 304                         wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_B");
 305                         wl1251_event_handle(wl, 1);
 306                 }
 307
 308                 if (intr & WL1251_ACX_INTR_INIT_COMPLETE)
 309                         wl1251_debug(DEBUG_IRQ,
 310                                      "WL1251_ACX_INTR_INIT_COMPLETE");
 311
 312                 if (--ctr == 0)
 313                         break;
 314
 315                 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
 316         } while (intr);
 317
 318 out_sleep:
 319         wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask));
 320         wl1251_ps_elp_sleep(wl);
 321
 322 out:
 323         mutex_unlock(&wl->mutex);
 324 }
 325
 326 static int wl1251_join(struct wl1251 *wl, u8 bss_type, u8 channel,
 327                        u16 beacon_interval, u8 dtim_period)
 328 {
 329         int ret;
 330
 331         ret = wl1251_acx_frame_rates(wl, DEFAULT_HW_GEN_TX_RATE,
 332                                      DEFAULT_HW_GEN_MODULATION_TYPE,
 333                                      wl->tx_mgmt_frm_rate,
 334                                      wl->tx_mgmt_frm_mod);
 335         if (ret < 0)
 336                 goto out;
 337
 338
 339         ret = wl1251_cmd_join(wl, bss_type, channel, beacon_interval,
 340                               dtim_period);
 341         if (ret < 0)
 342                 goto out;
 343
 344         ret = wl1251_event_wait(wl, JOIN_EVENT_COMPLETE_ID, 100);
 345         if (ret < 0)
 346                 wl1251_warning("join timeout");
 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         unsigned long flags;
 383
 384         skb_queue_tail(&wl->tx_queue, skb);
 385
 386         /*
 387          * The chip specific setup must run before the first TX packet -
 388          * before that, the tx_work will not be initialized!
 389          */
 390
 391         ieee80211_queue_work(wl->hw, &wl->tx_work);
 392
 393         /*
 394          * The workqueue is slow to process the tx_queue and we need stop
 395          * the queue here, otherwise the queue will get too long.
 396          */
 397         if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_HIGH_WATERMARK) {
 398                 wl1251_debug(DEBUG_TX, "op_tx: tx_queue full, stop queues");
 399
 400                 spin_lock_irqsave(&wl->wl_lock, flags);
 401                 ieee80211_stop_queues(wl->hw);
 402                 wl->tx_queue_stopped = true;
 403                 spin_unlock_irqrestore(&wl->wl_lock, flags);
 404         }
 405
 406         return NETDEV_TX_OK;
 407 }
 408
 409 static int wl1251_op_start(struct ieee80211_hw *hw)
 410 {
 411         struct wl1251 *wl = hw->priv;
 412         struct wiphy *wiphy = hw->wiphy;
 413         int ret = 0;
 414
 415         wl1251_debug(DEBUG_MAC80211, "mac80211 start");
 416
 417         mutex_lock(&wl->mutex);
 418
 419         if (wl->state != WL1251_STATE_OFF) {
 420                 wl1251_error("cannot start because not in off state: %d",
 421                              wl->state);
 422                 ret = -EBUSY;
 423                 goto out;
 424         }
 425
 426         ret = wl1251_chip_wakeup(wl);
 427         if (ret < 0)
 428                 goto out;
 429
 430         ret = wl1251_boot(wl);
 431         if (ret < 0)
 432                 goto out;
 433
 434         ret = wl1251_hw_init(wl);
 435         if (ret < 0)
 436                 goto out;
 437
 438         ret = wl1251_acx_station_id(wl);
 439         if (ret < 0)
 440                 goto out;
 441
 442         wl->state = WL1251_STATE_ON;
 443
 444         wl1251_info("firmware booted (%s)", wl->fw_ver);
 445
 446         /* update hw/fw version info in wiphy struct */
 447         wiphy->hw_version = wl->chip_id;
 448         strncpy(wiphy->fw_version, wl->fw_ver, sizeof(wiphy->fw_version));
 449
 450 out:
 451         if (ret < 0)
 452                 wl1251_power_off(wl);
 453
 454         mutex_unlock(&wl->mutex);
 455
 456         return ret;
 457 }
 458
 459 static void wl1251_op_stop(struct ieee80211_hw *hw)
 460 {
 461         struct wl1251 *wl = hw->priv;
 462
 463         wl1251_info("down");
 464
 465         wl1251_debug(DEBUG_MAC80211, "mac80211 stop");
 466
 467         mutex_lock(&wl->mutex);
 468
 469         WARN_ON(wl->state != WL1251_STATE_ON);
 470
 471         if (wl->scanning) {
 472                 mutex_unlock(&wl->mutex);
 473                 ieee80211_scan_completed(wl->hw, true);
 474                 mutex_lock(&wl->mutex);
 475                 wl->scanning = false;
 476         }
 477
 478         wl->state = WL1251_STATE_OFF;
 479
 480         wl1251_disable_interrupts(wl);
 481
 482         mutex_unlock(&wl->mutex);
 483
 484         cancel_work_sync(&wl->irq_work);
 485         cancel_work_sync(&wl->tx_work);
 486         cancel_work_sync(&wl->filter_work);
 487
 488         mutex_lock(&wl->mutex);
 489
 490         /* let's notify MAC80211 about the remaining pending TX frames */
 491         wl1251_tx_flush(wl);
 492         wl1251_power_off(wl);
 493
 494         memset(wl->bssid, 0, ETH_ALEN);
 495         wl->listen_int = 1;
 496         wl->bss_type = MAX_BSS_TYPE;
 497
 498         wl->data_in_count = 0;
 499         wl->rx_counter = 0;
 500         wl->rx_handled = 0;
 501         wl->rx_current_buffer = 0;
 502         wl->rx_last_id = 0;
 503         wl->next_tx_complete = 0;
 504         wl->elp = false;
 505         wl->psm = 0;
 506         wl->tx_queue_stopped = false;
 507         wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
 508         wl->channel = WL1251_DEFAULT_CHANNEL;
 509
 510         wl1251_debugfs_reset(wl);
 511
 512         mutex_unlock(&wl->mutex);
 513 }
 514
 515 static int wl1251_op_add_interface(struct ieee80211_hw *hw,
 516                                    struct ieee80211_vif *vif)
 517 {
 518         struct wl1251 *wl = hw->priv;
 519         int ret = 0;
 520
 521         wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
 522                      vif->type, vif->addr);
 523
 524         mutex_lock(&wl->mutex);
 525         if (wl->vif) {
 526                 ret = -EBUSY;
 527                 goto out;
 528         }
 529
 530         wl->vif = vif;
 531
 532         switch (vif->type) {
 533         case NL80211_IFTYPE_STATION:
 534                 wl->bss_type = BSS_TYPE_STA_BSS;
 535                 break;
 536         case NL80211_IFTYPE_ADHOC:
 537                 wl->bss_type = BSS_TYPE_IBSS;
 538                 break;
 539         default:
 540                 ret = -EOPNOTSUPP;
 541                 goto out;
 542         }
 543
 544         if (memcmp(wl->mac_addr, vif->addr, ETH_ALEN)) {
 545                 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
 546                 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
 547                 ret = wl1251_acx_station_id(wl);
 548                 if (ret < 0)
 549                         goto out;
 550         }
 551
 552 out:
 553         mutex_unlock(&wl->mutex);
 554         return ret;
 555 }
 556
 557 static void wl1251_op_remove_interface(struct ieee80211_hw *hw,
 558                                          struct ieee80211_vif *vif)
 559 {
 560         struct wl1251 *wl = hw->priv;
 561
 562         mutex_lock(&wl->mutex);
 563         wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface");
 564         wl->vif = NULL;
 565         mutex_unlock(&wl->mutex);
 566 }
 567
 568 static int wl1251_build_qos_null_data(struct wl1251 *wl)
 569 {
 570         struct ieee80211_qos_hdr template;
 571
 572         memset(&template, 0, sizeof(template));
 573
 574         memcpy(template.addr1, wl->bssid, ETH_ALEN);
 575         memcpy(template.addr2, wl->mac_addr, ETH_ALEN);
 576         memcpy(template.addr3, wl->bssid, ETH_ALEN);
 577
 578         template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
 579                                              IEEE80211_STYPE_QOS_NULLFUNC |
 580                                              IEEE80211_FCTL_TODS);
 581
 582         /* FIXME: not sure what priority to use here */
 583         template.qos_ctrl = cpu_to_le16(0);
 584
 585         return wl1251_cmd_template_set(wl, CMD_QOS_NULL_DATA, &template,
 586                                        sizeof(template));
 587 }
 588
 589 static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed)
 590 {
 591         struct wl1251 *wl = hw->priv;
 592         struct ieee80211_conf *conf = &hw->conf;
 593         int channel, ret = 0;
 594
 595         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
 596
 597         wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
 598                      channel,
 599                      conf->flags & IEEE80211_CONF_PS ? "on" : "off",
 600                      conf->power_level);
 601
 602         mutex_lock(&wl->mutex);
 603
 604         ret = wl1251_ps_elp_wakeup(wl);
 605         if (ret < 0)
 606                 goto out;
 607
 608         if (channel != wl->channel) {
 609                 wl->channel = channel;
 610
 611                 /*
 612                  * Use ENABLE_RX command for channel switching when no
 613                  * interface is present (monitor mode only).
 614                  * This leaves the tx path disabled in firmware, whereas
 615                  * the usual JOIN command seems to transmit some frames
 616                  * at firmware level.
 617                  */
 618                 if (wl->vif == NULL) {
 619                         ret = wl1251_cmd_data_path_rx(wl, wl->channel, 1);
 620                 } else {
 621                         ret = wl1251_join(wl, wl->bss_type, wl->channel,
 622                                           wl->beacon_int, wl->dtim_period);
 623                 }
 624                 if (ret < 0)
 625                         goto out_sleep;
 626         }
 627
 628         if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
 629                 wl1251_debug(DEBUG_PSM, "psm enabled");
 630
 631                 wl->psm_requested = true;
 632
 633                 wl->dtim_period = conf->ps_dtim_period;
 634
 635                 ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int,
 636                                                   wl->dtim_period);
 637
 638                 /*
 639                  * mac80211 enables PSM only if we're already associated.
 640                  */
 641                 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
 642                 if (ret < 0)
 643                         goto out_sleep;
 644         } else if (!(conf->flags & IEEE80211_CONF_PS) &&
 645                    wl->psm_requested) {
 646                 wl1251_debug(DEBUG_PSM, "psm disabled");
 647
 648                 wl->psm_requested = false;
 649
 650                 if (wl->psm) {
 651                         ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
 652                         if (ret < 0)
 653                                 goto out_sleep;
 654                 }
 655         }
 656
 657         if (conf->power_level != wl->power_level) {
 658                 ret = wl1251_acx_tx_power(wl, conf->power_level);
 659                 if (ret < 0)
 660                         goto out_sleep;
 661
 662                 wl->power_level = conf->power_level;
 663         }
 664
 665 out_sleep:
 666         wl1251_ps_elp_sleep(wl);
 667
 668 out:
 669         mutex_unlock(&wl->mutex);
 670
 671         return ret;
 672 }
 673
 674 #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
 675                                   FIF_ALLMULTI | \
 676                                   FIF_FCSFAIL | \
 677                                   FIF_BCN_PRBRESP_PROMISC | \
 678                                   FIF_CONTROL | \
 679                                   FIF_OTHER_BSS)
 680
 681 static void wl1251_op_configure_filter(struct ieee80211_hw *hw,
 682                                        unsigned int changed,
 683                                        unsigned int *total,u64 multicast)
 684 {
 685         struct wl1251 *wl = hw->priv;
 686
 687         wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter");
 688
 689         *total &= WL1251_SUPPORTED_FILTERS;
 690         changed &= WL1251_SUPPORTED_FILTERS;
 691
 692         if (changed == 0)
 693                 /* no filters which we support changed */
 694                 return;
 695
 696         /* FIXME: wl->rx_config and wl->rx_filter are not protected */
 697
 698         wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
 699         wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
 700
 701         if (*total & FIF_PROMISC_IN_BSS) {
 702                 wl->rx_config |= CFG_BSSID_FILTER_EN;
 703                 wl->rx_config |= CFG_RX_ALL_GOOD;
 704         }
 705         if (*total & FIF_ALLMULTI)
 706                 /*
 707                  * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
 708                  * all multicast frames
 709                  */
 710                 wl->rx_config &= ~CFG_MC_FILTER_EN;
 711         if (*total & FIF_FCSFAIL)
 712                 wl->rx_filter |= CFG_RX_FCS_ERROR;
 713         if (*total & FIF_BCN_PRBRESP_PROMISC) {
 714                 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
 715                 wl->rx_config &= ~CFG_SSID_FILTER_EN;
 716         }
 717         if (*total & FIF_CONTROL)
 718                 wl->rx_filter |= CFG_RX_CTL_EN;
 719         if (*total & FIF_OTHER_BSS)
 720                 wl->rx_filter &= ~CFG_BSSID_FILTER_EN;
 721
 722         /*
 723          * FIXME: workqueues need to be properly cancelled on stop(), for
 724          * now let's just disable changing the filter settings. They will
 725          * be updated any on config().
 726          */
 727         /* schedule_work(&wl->filter_work); */
 728 }
 729
 730 /* HW encryption */
 731 static int wl1251_set_key_type(struct wl1251 *wl,
 732                                struct wl1251_cmd_set_keys *key,
 733                                enum set_key_cmd cmd,
 734                                struct ieee80211_key_conf *mac80211_key,
 735                                const u8 *addr)
 736 {
 737         switch (mac80211_key->alg) {
 738         case ALG_WEP:
 739                 if (is_broadcast_ether_addr(addr))
 740                         key->key_type = KEY_WEP_DEFAULT;
 741                 else
 742                         key->key_type = KEY_WEP_ADDR;
 743
 744                 mac80211_key->hw_key_idx = mac80211_key->keyidx;
 745                 break;
 746         case ALG_TKIP:
 747                 if (is_broadcast_ether_addr(addr))
 748                         key->key_type = KEY_TKIP_MIC_GROUP;
 749                 else
 750                         key->key_type = KEY_TKIP_MIC_PAIRWISE;
 751
 752                 mac80211_key->hw_key_idx = mac80211_key->keyidx;
 753                 break;
 754         case ALG_CCMP:
 755                 if (is_broadcast_ether_addr(addr))
 756                         key->key_type = KEY_AES_GROUP;
 757                 else
 758                         key->key_type = KEY_AES_PAIRWISE;
 759                 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
 760                 break;
 761         default:
 762                 wl1251_error("Unknown key algo 0x%x", mac80211_key->alg);
 763                 return -EOPNOTSUPP;
 764         }
 765
 766         return 0;
 767 }
 768
 769 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 770                              struct ieee80211_vif *vif,
 771                              struct ieee80211_sta *sta,
 772                              struct ieee80211_key_conf *key)
 773 {
 774         struct wl1251 *wl = hw->priv;
 775         struct wl1251_cmd_set_keys *wl_cmd;
 776         const u8 *addr;
 777         int ret;
 778
 779         static const u8 bcast_addr[ETH_ALEN] =
 780                 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 781
 782         wl1251_debug(DEBUG_MAC80211, "mac80211 set key");
 783
 784         wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
 785         if (!wl_cmd) {
 786                 ret = -ENOMEM;
 787                 goto out;
 788         }
 789
 790         addr = sta ? sta->addr : bcast_addr;
 791
 792         wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
 793         wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
 794         wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
 795                      key->alg, key->keyidx, key->keylen, key->flags);
 796         wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
 797
 798         if (is_zero_ether_addr(addr)) {
 799                 /* We dont support TX only encryption */
 800                 ret = -EOPNOTSUPP;
 801                 goto out;
 802         }
 803
 804         mutex_lock(&wl->mutex);
 805
 806         ret = wl1251_ps_elp_wakeup(wl);
 807         if (ret < 0)
 808                 goto out_unlock;
 809
 810         switch (cmd) {
 811         case SET_KEY:
 812                 wl_cmd->key_action = KEY_ADD_OR_REPLACE;
 813                 break;
 814         case DISABLE_KEY:
 815                 wl_cmd->key_action = KEY_REMOVE;
 816                 break;
 817         default:
 818                 wl1251_error("Unsupported key cmd 0x%x", cmd);
 819                 break;
 820         }
 821
 822         ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr);
 823         if (ret < 0) {
 824                 wl1251_error("Set KEY type failed");
 825                 goto out_sleep;
 826         }
 827
 828         if (wl_cmd->key_type != KEY_WEP_DEFAULT)
 829                 memcpy(wl_cmd->addr, addr, ETH_ALEN);
 830
 831         if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
 832             (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
 833                 /*
 834                  * We get the key in the following form:
 835                  * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
 836                  * but the target is expecting:
 837                  * TKIP - RX MIC - TX MIC
 838                  */
 839                 memcpy(wl_cmd->key, key->key, 16);
 840                 memcpy(wl_cmd->key + 16, key->key + 24, 8);
 841                 memcpy(wl_cmd->key + 24, key->key + 16, 8);
 842
 843         } else {
 844                 memcpy(wl_cmd->key, key->key, key->keylen);
 845         }
 846         wl_cmd->key_size = key->keylen;
 847
 848         wl_cmd->id = key->keyidx;
 849         wl_cmd->ssid_profile = 0;
 850
 851         wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
 852
 853         ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
 854         if (ret < 0) {
 855                 wl1251_warning("could not set keys");
 856                 goto out_sleep;
 857         }
 858
 859 out_sleep:
 860         wl1251_ps_elp_sleep(wl);
 861
 862 out_unlock:
 863         mutex_unlock(&wl->mutex);
 864
 865 out:
 866         kfree(wl_cmd);
 867
 868         return ret;
 869 }
 870
 871 static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
 872                              struct cfg80211_scan_request *req)
 873 {
 874         struct wl1251 *wl = hw->priv;
 875         struct sk_buff *skb;
 876         size_t ssid_len = 0;
 877         u8 *ssid = NULL;
 878         int ret;
 879
 880         wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan");
 881
 882         if (req->n_ssids) {
 883                 ssid = req->ssids[0].ssid;
 884                 ssid_len = req->ssids[0].ssid_len;
 885         }
 886
 887         mutex_lock(&wl->mutex);
 888
 889         if (wl->scanning) {
 890                 wl1251_debug(DEBUG_SCAN, "scan already in progress");
 891                 ret = -EINVAL;
 892                 goto out;
 893         }
 894
 895         ret = wl1251_ps_elp_wakeup(wl);
 896         if (ret < 0)
 897                 goto out;
 898
 899         skb = ieee80211_probereq_get(wl->hw, wl->vif, ssid, ssid_len,
 900                                      req->ie, req->ie_len);
 901         if (!skb) {
 902                 ret = -ENOMEM;
 903                 goto out;
 904         }
 905
 906         ret = wl1251_cmd_template_set(wl, CMD_PROBE_REQ, skb->data,
 907                                       skb->len);
 908         dev_kfree_skb(skb);
 909         if (ret < 0)
 910                 goto out_sleep;
 911
 912         ret = wl1251_cmd_trigger_scan_to(wl, 0);
 913         if (ret < 0)
 914                 goto out_sleep;
 915
 916         wl->scanning = true;
 917
 918         ret = wl1251_cmd_scan(wl, ssid, ssid_len, req->channels,
 919                               req->n_channels, WL1251_SCAN_NUM_PROBES);
 920         if (ret < 0) {
 921                 wl1251_debug(DEBUG_SCAN, "scan failed %d", ret);
 922                 wl->scanning = false;
 923                 goto out_sleep;
 924         }
 925
 926 out_sleep:
 927         wl1251_ps_elp_sleep(wl);
 928
 929 out:
 930         mutex_unlock(&wl->mutex);
 931
 932         return ret;
 933 }
 934
 935 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
 936 {
 937         struct wl1251 *wl = hw->priv;
 938         int ret;
 939
 940         mutex_lock(&wl->mutex);
 941
 942         ret = wl1251_ps_elp_wakeup(wl);
 943         if (ret < 0)
 944                 goto out;
 945
 946         ret = wl1251_acx_rts_threshold(wl, (u16) value);
 947         if (ret < 0)
 948                 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret);
 949
 950         wl1251_ps_elp_sleep(wl);
 951
 952 out:
 953         mutex_unlock(&wl->mutex);
 954
 955         return ret;
 956 }
 957
 958 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
 959                                        struct ieee80211_vif *vif,
 960                                        struct ieee80211_bss_conf *bss_conf,
 961                                        u32 changed)
 962 {
 963         struct wl1251 *wl = hw->priv;
 964         struct sk_buff *beacon, *skb;
 965         int ret;
 966
 967         wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed");
 968
 969         mutex_lock(&wl->mutex);
 970
 971         ret = wl1251_ps_elp_wakeup(wl);
 972         if (ret < 0)
 973                 goto out;
 974
 975         if (changed & BSS_CHANGED_BSSID) {
 976                 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
 977
 978                 skb = ieee80211_nullfunc_get(wl->hw, wl->vif);
 979                 if (!skb)
 980                         goto out_sleep;
 981
 982                 ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA,
 983                                               skb->data, skb->len);
 984                 dev_kfree_skb(skb);
 985                 if (ret < 0)
 986                         goto out_sleep;
 987
 988                 ret = wl1251_build_qos_null_data(wl);
 989                 if (ret < 0)
 990                         goto out;
 991
 992                 if (wl->bss_type != BSS_TYPE_IBSS) {
 993                         ret = wl1251_join(wl, wl->bss_type, wl->channel,
 994                                           wl->beacon_int, wl->dtim_period);
 995                         if (ret < 0)
 996                                 goto out_sleep;
 997                 }
 998         }
 999
1000         if (changed & BSS_CHANGED_ASSOC) {
1001                 if (bss_conf->assoc) {
1002                         wl->beacon_int = bss_conf->beacon_int;
1003
1004                         skb = ieee80211_pspoll_get(wl->hw, wl->vif);
1005                         if (!skb)
1006                                 goto out_sleep;
1007
1008                         ret = wl1251_cmd_template_set(wl, CMD_PS_POLL,
1009                                                       skb->data,
1010                                                       skb->len);
1011                         dev_kfree_skb(skb);
1012                         if (ret < 0)
1013                                 goto out_sleep;
1014
1015                         ret = wl1251_acx_aid(wl, bss_conf->aid);
1016                         if (ret < 0)
1017                                 goto out_sleep;
1018                 } else {
1019                         /* use defaults when not associated */
1020                         wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1021                         wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1022                 }
1023         }
1024         if (changed & BSS_CHANGED_ERP_SLOT) {
1025                 if (bss_conf->use_short_slot)
1026                         ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT);
1027                 else
1028                         ret = wl1251_acx_slot(wl, SLOT_TIME_LONG);
1029                 if (ret < 0) {
1030                         wl1251_warning("Set slot time failed %d", ret);
1031                         goto out_sleep;
1032                 }
1033         }
1034
1035         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1036                 if (bss_conf->use_short_preamble)
1037                         wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1038                 else
1039                         wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1040         }
1041
1042         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1043                 if (bss_conf->use_cts_prot)
1044                         ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1045                 else
1046                         ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1047                 if (ret < 0) {
1048                         wl1251_warning("Set ctsprotect failed %d", ret);
1049                         goto out_sleep;
1050                 }
1051         }
1052
1053         if (changed & BSS_CHANGED_BEACON) {
1054                 beacon = ieee80211_beacon_get(hw, vif);
1055                 if (!beacon)
1056                         goto out_sleep;
1057
1058                 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data,
1059                                               beacon->len);
1060
1061                 if (ret < 0) {
1062                         dev_kfree_skb(beacon);
1063                         goto out_sleep;
1064                 }
1065
1066                 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
1067                                               beacon->len);
1068
1069                 dev_kfree_skb(beacon);
1070
1071                 if (ret < 0)
1072                         goto out_sleep;
1073
1074                 ret = wl1251_join(wl, wl->bss_type, wl->beacon_int,
1075                                   wl->channel, wl->dtim_period);
1076
1077                 if (ret < 0)
1078                         goto out_sleep;
1079         }
1080
1081 out_sleep:
1082         wl1251_ps_elp_sleep(wl);
1083
1084 out:
1085         mutex_unlock(&wl->mutex);
1086 }
1087
1088
1089 /* can't be const, mac80211 writes to this */
1090 static struct ieee80211_rate wl1251_rates[] = {
1091         { .bitrate = 10,
1092           .hw_value = 0x1,
1093           .hw_value_short = 0x1, },
1094         { .bitrate = 20,
1095           .hw_value = 0x2,
1096           .hw_value_short = 0x2,
1097           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1098         { .bitrate = 55,
1099           .hw_value = 0x4,
1100           .hw_value_short = 0x4,
1101           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1102         { .bitrate = 110,
1103           .hw_value = 0x20,
1104           .hw_value_short = 0x20,
1105           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1106         { .bitrate = 60,
1107           .hw_value = 0x8,
1108           .hw_value_short = 0x8, },
1109         { .bitrate = 90,
1110           .hw_value = 0x10,
1111           .hw_value_short = 0x10, },
1112         { .bitrate = 120,
1113           .hw_value = 0x40,
1114           .hw_value_short = 0x40, },
1115         { .bitrate = 180,
1116           .hw_value = 0x80,
1117           .hw_value_short = 0x80, },
1118         { .bitrate = 240,
1119           .hw_value = 0x200,
1120           .hw_value_short = 0x200, },
1121         { .bitrate = 360,
1122          .hw_value = 0x400,
1123          .hw_value_short = 0x400, },
1124         { .bitrate = 480,
1125           .hw_value = 0x800,
1126           .hw_value_short = 0x800, },
1127         { .bitrate = 540,
1128           .hw_value = 0x1000,
1129           .hw_value_short = 0x1000, },
1130 };
1131
1132 /* can't be const, mac80211 writes to this */
1133 static struct ieee80211_channel wl1251_channels[] = {
1134         { .hw_value = 1, .center_freq = 2412},
1135         { .hw_value = 2, .center_freq = 2417},
1136         { .hw_value = 3, .center_freq = 2422},
1137         { .hw_value = 4, .center_freq = 2427},
1138         { .hw_value = 5, .center_freq = 2432},
1139         { .hw_value = 6, .center_freq = 2437},
1140         { .hw_value = 7, .center_freq = 2442},
1141         { .hw_value = 8, .center_freq = 2447},
1142         { .hw_value = 9, .center_freq = 2452},
1143         { .hw_value = 10, .center_freq = 2457},
1144         { .hw_value = 11, .center_freq = 2462},
1145         { .hw_value = 12, .center_freq = 2467},
1146         { .hw_value = 13, .center_freq = 2472},
1147 };
1148
1149 static int wl1251_op_conf_tx(struct ieee80211_hw *hw, u16 queue,
1150                              const struct ieee80211_tx_queue_params *params)
1151 {
1152         enum wl1251_acx_ps_scheme ps_scheme;
1153         struct wl1251 *wl = hw->priv;
1154         int ret;
1155
1156         mutex_lock(&wl->mutex);
1157
1158         wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
1159
1160         ret = wl1251_ps_elp_wakeup(wl);
1161         if (ret < 0)
1162                 goto out;
1163
1164         /* mac80211 uses units of 32 usec */
1165         ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue),
1166                                 params->cw_min, params->cw_max,
1167                                 params->aifs, params->txop * 32);
1168         if (ret < 0)
1169                 goto out_sleep;
1170
1171         if (params->uapsd)
1172                 ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER;
1173         else
1174                 ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY;
1175
1176         ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue),
1177                                  CHANNEL_TYPE_EDCF,
1178                                  wl1251_tx_get_queue(queue), ps_scheme,
1179                                  WL1251_ACX_ACK_POLICY_LEGACY);
1180         if (ret < 0)
1181                 goto out_sleep;
1182
1183 out_sleep:
1184         wl1251_ps_elp_sleep(wl);
1185
1186 out:
1187         mutex_unlock(&wl->mutex);
1188
1189         return ret;
1190 }
1191
1192 /* can't be const, mac80211 writes to this */
1193 static struct ieee80211_supported_band wl1251_band_2ghz = {
1194         .channels = wl1251_channels,
1195         .n_channels = ARRAY_SIZE(wl1251_channels),
1196         .bitrates = wl1251_rates,
1197         .n_bitrates = ARRAY_SIZE(wl1251_rates),
1198 };
1199
1200 static const struct ieee80211_ops wl1251_ops = {
1201         .start = wl1251_op_start,
1202         .stop = wl1251_op_stop,
1203         .add_interface = wl1251_op_add_interface,
1204         .remove_interface = wl1251_op_remove_interface,
1205         .config = wl1251_op_config,
1206         .configure_filter = wl1251_op_configure_filter,
1207         .tx = wl1251_op_tx,
1208         .set_key = wl1251_op_set_key,
1209         .hw_scan = wl1251_op_hw_scan,
1210         .bss_info_changed = wl1251_op_bss_info_changed,
1211         .set_rts_threshold = wl1251_op_set_rts_threshold,
1212         .conf_tx = wl1251_op_conf_tx,
1213 };
1214
1215 static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data)
1216 {
1217         unsigned long timeout;
1218
1219         wl1251_reg_write32(wl, EE_ADDR, offset);
1220         wl1251_reg_write32(wl, EE_CTL, EE_CTL_READ);
1221
1222         /* EE_CTL_READ clears when data is ready */
1223         timeout = jiffies + msecs_to_jiffies(100);
1224         while (1) {
1225                 if (!(wl1251_reg_read32(wl, EE_CTL) & EE_CTL_READ))
1226                         break;
1227
1228                 if (time_after(jiffies, timeout))
1229                         return -ETIMEDOUT;
1230
1231                 msleep(1);
1232         }
1233
1234         *data = wl1251_reg_read32(wl, EE_DATA);
1235         return 0;
1236 }
1237
1238 static int wl1251_read_eeprom(struct wl1251 *wl, off_t offset,
1239                               u8 *data, size_t len)
1240 {
1241         size_t i;
1242         int ret;
1243
1244         wl1251_reg_write32(wl, EE_START, 0);
1245
1246         for (i = 0; i < len; i++) {
1247                 ret = wl1251_read_eeprom_byte(wl, offset + i, &data[i]);
1248                 if (ret < 0)
1249                         return ret;
1250         }
1251
1252         return 0;
1253 }
1254
1255 static int wl1251_read_eeprom_mac(struct wl1251 *wl)
1256 {
1257         u8 mac[ETH_ALEN];
1258         int i, ret;
1259
1260         wl1251_set_partition(wl, 0, 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE);
1261
1262         ret = wl1251_read_eeprom(wl, 0x1c, mac, sizeof(mac));
1263         if (ret < 0) {
1264                 wl1251_warning("failed to read MAC address from EEPROM");
1265                 return ret;
1266         }
1267
1268         /* MAC is stored in reverse order */
1269         for (i = 0; i < ETH_ALEN; i++)
1270                 wl->mac_addr[i] = mac[ETH_ALEN - i - 1];
1271
1272         return 0;
1273 }
1274
1275 static int wl1251_register_hw(struct wl1251 *wl)
1276 {
1277         int ret;
1278
1279         if (wl->mac80211_registered)
1280                 return 0;
1281
1282         SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1283
1284         ret = ieee80211_register_hw(wl->hw);
1285         if (ret < 0) {
1286                 wl1251_error("unable to register mac80211 hw: %d", ret);
1287                 return ret;
1288         }
1289
1290         wl->mac80211_registered = true;
1291
1292         wl1251_notice("loaded");
1293
1294         return 0;
1295 }
1296
1297 int wl1251_init_ieee80211(struct wl1251 *wl)
1298 {
1299         int ret;
1300
1301         /* The tx descriptor buffer and the TKIP space */
1302         wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
1303                 + WL1251_TKIP_IV_SPACE;
1304
1305         /* unit us */
1306         /* FIXME: find a proper value */
1307         wl->hw->channel_change_time = 10000;
1308
1309         wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1310                 IEEE80211_HW_NOISE_DBM |
1311                 IEEE80211_HW_SUPPORTS_PS |
1312                 IEEE80211_HW_BEACON_FILTER |
1313                 IEEE80211_HW_SUPPORTS_UAPSD;
1314
1315         wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1316                                          BIT(NL80211_IFTYPE_ADHOC);
1317         wl->hw->wiphy->max_scan_ssids = 1;
1318         wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz;
1319
1320         wl->hw->queues = 4;
1321
1322         if (wl->use_eeprom)
1323                 wl1251_read_eeprom_mac(wl);
1324
1325         ret = wl1251_register_hw(wl);
1326         if (ret)
1327                 goto out;
1328
1329         wl1251_debugfs_init(wl);
1330         wl1251_notice("initialized");
1331
1332         ret = 0;
1333
1334 out:
1335         return ret;
1336 }
1337 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211);
1338
1339 struct ieee80211_hw *wl1251_alloc_hw(void)
1340 {
1341         struct ieee80211_hw *hw;
1342         struct wl1251 *wl;
1343         int i;
1344         static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1345
1346         hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops);
1347         if (!hw) {
1348                 wl1251_error("could not alloc ieee80211_hw");
1349                 return ERR_PTR(-ENOMEM);
1350         }
1351
1352         wl = hw->priv;
1353         memset(wl, 0, sizeof(*wl));
1354
1355         wl->hw = hw;
1356
1357         wl->data_in_count = 0;
1358
1359         skb_queue_head_init(&wl->tx_queue);
1360
1361         INIT_WORK(&wl->filter_work, wl1251_filter_work);
1362         INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work);
1363         wl->channel = WL1251_DEFAULT_CHANNEL;
1364         wl->scanning = false;
1365         wl->default_key = 0;
1366         wl->listen_int = 1;
1367         wl->rx_counter = 0;
1368         wl->rx_handled = 0;
1369         wl->rx_current_buffer = 0;
1370         wl->rx_last_id = 0;
1371         wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
1372         wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
1373         wl->elp = false;
1374         wl->psm = 0;
1375         wl->psm_requested = false;
1376         wl->tx_queue_stopped = false;
1377         wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
1378         wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1379         wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1380         wl->vif = NULL;
1381
1382         for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1383                 wl->tx_frames[i] = NULL;
1384
1385         wl->next_tx_complete = 0;
1386
1387         INIT_WORK(&wl->irq_work, wl1251_irq_work);
1388         INIT_WORK(&wl->tx_work, wl1251_tx_work);
1389
1390         /*
1391          * In case our MAC address is not correctly set,
1392          * we use a random but Nokia MAC.
1393          */
1394         memcpy(wl->mac_addr, nokia_oui, 3);
1395         get_random_bytes(wl->mac_addr + 3, 3);
1396
1397         wl->state = WL1251_STATE_OFF;
1398         mutex_init(&wl->mutex);
1399
1400         wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
1401         wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
1402
1403         wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1404         if (!wl->rx_descriptor) {
1405                 wl1251_error("could not allocate memory for rx descriptor");
1406                 ieee80211_free_hw(hw);
1407                 return ERR_PTR(-ENOMEM);
1408         }
1409
1410         return hw;
1411 }
1412 EXPORT_SYMBOL_GPL(wl1251_alloc_hw);
1413
1414 int wl1251_free_hw(struct wl1251 *wl)
1415 {
1416         ieee80211_unregister_hw(wl->hw);
1417
1418         wl1251_debugfs_exit(wl);
1419
1420         kfree(wl->target_mem_map);
1421         kfree(wl->data_path);
1422         vfree(wl->fw);
1423         wl->fw = NULL;
1424         kfree(wl->nvs);
1425         wl->nvs = NULL;
1426
1427         kfree(wl->rx_descriptor);
1428         wl->rx_descriptor = NULL;
1429
1430         ieee80211_free_hw(wl->hw);
1431
1432         return 0;
1433 }
1434 EXPORT_SYMBOL_GPL(wl1251_free_hw);
1435
1436 MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core");
1437 MODULE_LICENSE("GPL");
1438 MODULE_AUTHOR("Kalle Valo <kalle.valo@nokia.com>");
1439 MODULE_FIRMWARE(WL1251_FW_NAME);