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
  33 #include "wl1251.h"
  34 #include "wl12xx_80211.h"
  35 #include "wl1251_reg.h"
  36 #include "wl1251_io.h"
  37 #include "wl1251_cmd.h"
  38 #include "wl1251_event.h"
  39 #include "wl1251_tx.h"
  40 #include "wl1251_rx.h"
  41 #include "wl1251_ps.h"
  42 #include "wl1251_init.h"
  43 #include "wl1251_debugfs.h"
  44 #include "wl1251_boot.h"
  45
  46 void wl1251_enable_interrupts(struct wl1251 *wl)
  47 {
  48         wl->if_ops->enable_irq(wl);
  49 }
  50
  51 void wl1251_disable_interrupts(struct wl1251 *wl)
  52 {
  53         wl->if_ops->disable_irq(wl);
  54 }
  55
  56 static void wl1251_power_off(struct wl1251 *wl)
  57 {
  58         wl->set_power(false);
  59 }
  60
  61 static void wl1251_power_on(struct wl1251 *wl)
  62 {
  63         wl->set_power(true);
  64 }
  65
  66 static int wl1251_fetch_firmware(struct wl1251 *wl)
  67 {
  68         const struct firmware *fw;
  69         struct device *dev = wiphy_dev(wl->hw->wiphy);
  70         int ret;
  71
  72         ret = request_firmware(&fw, WL1251_FW_NAME, dev);
  73
  74         if (ret < 0) {
  75                 wl1251_error("could not get firmware: %d", ret);
  76                 return ret;
  77         }
  78
  79         if (fw->size % 4) {
  80                 wl1251_error("firmware size is not multiple of 32 bits: %zu",
  81                              fw->size);
  82                 ret = -EILSEQ;
  83                 goto out;
  84         }
  85
  86         wl->fw_len = fw->size;
  87         wl->fw = vmalloc(wl->fw_len);
  88
  89         if (!wl->fw) {
  90                 wl1251_error("could not allocate memory for the firmware");
  91                 ret = -ENOMEM;
  92                 goto out;
  93         }
  94
  95         memcpy(wl->fw, fw->data, wl->fw_len);
  96
  97         ret = 0;
  98
  99 out:
 100         release_firmware(fw);
 101
 102         return ret;
 103 }
 104
 105 static int wl1251_fetch_nvs(struct wl1251 *wl)
 106 {
 107         const struct firmware *fw;
 108         struct device *dev = wiphy_dev(wl->hw->wiphy);
 109         int ret;
 110
 111         ret = request_firmware(&fw, WL1251_NVS_NAME, dev);
 112
 113         if (ret < 0) {
 114                 wl1251_error("could not get nvs file: %d", ret);
 115                 return ret;
 116         }
 117
 118         if (fw->size % 4) {
 119                 wl1251_error("nvs size is not multiple of 32 bits: %zu",
 120                              fw->size);
 121                 ret = -EILSEQ;
 122                 goto out;
 123         }
 124
 125         wl->nvs_len = fw->size;
 126         wl->nvs = kmalloc(wl->nvs_len, GFP_KERNEL);
 127
 128         if (!wl->nvs) {
 129                 wl1251_error("could not allocate memory for the nvs file");
 130                 ret = -ENOMEM;
 131                 goto out;
 132         }
 133
 134         memcpy(wl->nvs, fw->data, wl->nvs_len);
 135
 136         ret = 0;
 137
 138 out:
 139         release_firmware(fw);
 140
 141         return ret;
 142 }
 143
 144 static void wl1251_fw_wakeup(struct wl1251 *wl)
 145 {
 146         u32 elp_reg;
 147
 148         elp_reg = ELPCTRL_WAKE_UP;
 149         wl1251_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
 150         elp_reg = wl1251_read32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR);
 151
 152         if (!(elp_reg & ELPCTRL_WLAN_READY))
 153                 wl1251_warning("WLAN not ready");
 154 }
 155
 156 static int wl1251_chip_wakeup(struct wl1251 *wl)
 157 {
 158         int ret = 0;
 159
 160         wl1251_power_on(wl);
 161         msleep(WL1251_POWER_ON_SLEEP);
 162         wl->if_ops->reset(wl);
 163
 164         /* We don't need a real memory partition here, because we only want
 165          * to use the registers at this point. */
 166         wl1251_set_partition(wl,
 167                              0x00000000,
 168                              0x00000000,
 169                              REGISTERS_BASE,
 170                              REGISTERS_DOWN_SIZE);
 171
 172         /* ELP module wake up */
 173         wl1251_fw_wakeup(wl);
 174
 175         /* whal_FwCtrl_BootSm() */
 176
 177         /* 0. read chip id from CHIP_ID */
 178         wl->chip_id = wl1251_reg_read32(wl, CHIP_ID_B);
 179
 180         /* 1. check if chip id is valid */
 181
 182         switch (wl->chip_id) {
 183         case CHIP_ID_1251_PG12:
 184                 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG12)",
 185                              wl->chip_id);
 186                 break;
 187         case CHIP_ID_1251_PG11:
 188                 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG11)",
 189                              wl->chip_id);
 190                 break;
 191         case CHIP_ID_1251_PG10:
 192         default:
 193                 wl1251_error("unsupported chip id: 0x%x", wl->chip_id);
 194                 ret = -ENODEV;
 195                 goto out;
 196         }
 197
 198         if (wl->fw == NULL) {
 199                 ret = wl1251_fetch_firmware(wl);
 200                 if (ret < 0)
 201                         goto out;
 202         }
 203
 204         /* No NVS from netlink, try to get it from the filesystem */
 205         if (wl->nvs == NULL) {
 206                 ret = wl1251_fetch_nvs(wl);
 207                 if (ret < 0)
 208                         goto out;
 209         }
 210
 211 out:
 212         return ret;
 213 }
 214
 215 #define WL1251_IRQ_LOOP_COUNT 10
 216 static void wl1251_irq_work(struct work_struct *work)
 217 {
 218         u32 intr, ctr = WL1251_IRQ_LOOP_COUNT;
 219         struct wl1251 *wl =
 220                 container_of(work, struct wl1251, irq_work);
 221         int ret;
 222
 223         mutex_lock(&wl->mutex);
 224
 225         wl1251_debug(DEBUG_IRQ, "IRQ work");
 226
 227         if (wl->state == WL1251_STATE_OFF)
 228                 goto out;
 229
 230         ret = wl1251_ps_elp_wakeup(wl);
 231         if (ret < 0)
 232                 goto out;
 233
 234         wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1251_ACX_INTR_ALL);
 235
 236         intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
 237         wl1251_debug(DEBUG_IRQ, "intr: 0x%x", intr);
 238
 239         do {
 240                 if (wl->data_path) {
 241                         wl->rx_counter = wl1251_mem_read32(
 242                                 wl, wl->data_path->rx_control_addr);
 243
 244                         /* We handle a frmware bug here */
 245                         switch ((wl->rx_counter - wl->rx_handled) & 0xf) {
 246                         case 0:
 247                                 wl1251_debug(DEBUG_IRQ,
 248                                              "RX: FW and host in sync");
 249                                 intr &= ~WL1251_ACX_INTR_RX0_DATA;
 250                                 intr &= ~WL1251_ACX_INTR_RX1_DATA;
 251                                 break;
 252                         case 1:
 253                                 wl1251_debug(DEBUG_IRQ, "RX: FW +1");
 254                                 intr |= WL1251_ACX_INTR_RX0_DATA;
 255                                 intr &= ~WL1251_ACX_INTR_RX1_DATA;
 256                                 break;
 257                         case 2:
 258                                 wl1251_debug(DEBUG_IRQ, "RX: FW +2");
 259                                 intr |= WL1251_ACX_INTR_RX0_DATA;
 260                                 intr |= WL1251_ACX_INTR_RX1_DATA;
 261                                 break;
 262                         default:
 263                                 wl1251_warning(
 264                                         "RX: FW and host out of sync: %d",
 265                                         wl->rx_counter - wl->rx_handled);
 266                                 break;
 267                         }
 268
 269                         wl->rx_handled = wl->rx_counter;
 270
 271                         wl1251_debug(DEBUG_IRQ, "RX counter: %d",
 272                                      wl->rx_counter);
 273                 }
 274
 275                 intr &= wl->intr_mask;
 276
 277                 if (intr == 0) {
 278                         wl1251_debug(DEBUG_IRQ, "INTR is 0");
 279                         goto out_sleep;
 280                 }
 281
 282                 if (intr & WL1251_ACX_INTR_RX0_DATA) {
 283                         wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX0_DATA");
 284                         wl1251_rx(wl);
 285                 }
 286
 287                 if (intr & WL1251_ACX_INTR_RX1_DATA) {
 288                         wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX1_DATA");
 289                         wl1251_rx(wl);
 290                 }
 291
 292                 if (intr & WL1251_ACX_INTR_TX_RESULT) {
 293                         wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_TX_RESULT");
 294                         wl1251_tx_complete(wl);
 295                 }
 296
 297                 if (intr & (WL1251_ACX_INTR_EVENT_A |
 298                             WL1251_ACX_INTR_EVENT_B)) {
 299                         wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT (0x%x)",
 300                                      intr);
 301                         if (intr & WL1251_ACX_INTR_EVENT_A)
 302                                 wl1251_event_handle(wl, 0);
 303                         else
 304                                 wl1251_event_handle(wl, 1);
 305                 }
 306
 307                 if (intr & WL1251_ACX_INTR_INIT_COMPLETE)
 308                         wl1251_debug(DEBUG_IRQ,
 309                                      "WL1251_ACX_INTR_INIT_COMPLETE");
 310
 311                 if (--ctr == 0)
 312                         break;
 313
 314                 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
 315         } while (intr);
 316
 317 out_sleep:
 318         wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask));
 319         wl1251_ps_elp_sleep(wl);
 320
 321 out:
 322         mutex_unlock(&wl->mutex);
 323 }
 324
 325 static int wl1251_join(struct wl1251 *wl, u8 bss_type, u8 channel,
 326                        u16 beacon_interval, u8 dtim_period)
 327 {
 328         int ret;
 329
 330         ret = wl1251_acx_frame_rates(wl, DEFAULT_HW_GEN_TX_RATE,
 331                                      DEFAULT_HW_GEN_MODULATION_TYPE,
 332                                      wl->tx_mgmt_frm_rate,
 333                                      wl->tx_mgmt_frm_mod);
 334         if (ret < 0)
 335                 goto out;
 336
 337
 338         ret = wl1251_cmd_join(wl, bss_type, channel, beacon_interval,
 339                               dtim_period);
 340         if (ret < 0)
 341                 goto out;
 342
 343         /*
 344          * FIXME: we should wait for JOIN_EVENT_COMPLETE_ID but to simplify
 345          * locking we just sleep instead, for now
 346          */
 347         msleep(10);
 348
 349 out:
 350         return ret;
 351 }
 352
 353 static void wl1251_filter_work(struct work_struct *work)
 354 {
 355         struct wl1251 *wl =
 356                 container_of(work, struct wl1251, filter_work);
 357         int ret;
 358
 359         mutex_lock(&wl->mutex);
 360
 361         if (wl->state == WL1251_STATE_OFF)
 362                 goto out;
 363
 364         ret = wl1251_ps_elp_wakeup(wl);
 365         if (ret < 0)
 366                 goto out;
 367
 368         ret = wl1251_join(wl, wl->bss_type, wl->channel, wl->beacon_int,
 369                           wl->dtim_period);
 370         if (ret < 0)
 371                 goto out_sleep;
 372
 373 out_sleep:
 374         wl1251_ps_elp_sleep(wl);
 375
 376 out:
 377         mutex_unlock(&wl->mutex);
 378 }
 379
 380 static int wl1251_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 381 {
 382         struct wl1251 *wl = hw->priv;
 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_MAX_LENGTH) {
 398                 wl1251_debug(DEBUG_TX, "op_tx: tx_queue full, stop queues");
 399                 ieee80211_stop_queues(wl->hw);
 400
 401                 /*
 402                  * FIXME: this is racy, the variable is not properly
 403                  * protected. Maybe fix this by removing the stupid
 404                  * variable altogether and checking the real queue state?
 405                  */
 406                 wl->tx_queue_stopped = true;
 407         }
 408
 409         return NETDEV_TX_OK;
 410 }
 411
 412 static int wl1251_op_start(struct ieee80211_hw *hw)
 413 {
 414         struct wl1251 *wl = hw->priv;
 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 out:
 449         if (ret < 0)
 450                 wl1251_power_off(wl);
 451
 452         mutex_unlock(&wl->mutex);
 453
 454         return ret;
 455 }
 456
 457 static void wl1251_op_stop(struct ieee80211_hw *hw)
 458 {
 459         struct wl1251 *wl = hw->priv;
 460
 461         wl1251_info("down");
 462
 463         wl1251_debug(DEBUG_MAC80211, "mac80211 stop");
 464
 465         mutex_lock(&wl->mutex);
 466
 467         WARN_ON(wl->state != WL1251_STATE_ON);
 468
 469         if (wl->scanning) {
 470                 mutex_unlock(&wl->mutex);
 471                 ieee80211_scan_completed(wl->hw, true);
 472                 mutex_lock(&wl->mutex);
 473                 wl->scanning = false;
 474         }
 475
 476         wl->state = WL1251_STATE_OFF;
 477
 478         wl1251_disable_interrupts(wl);
 479
 480         mutex_unlock(&wl->mutex);
 481
 482         cancel_work_sync(&wl->irq_work);
 483         cancel_work_sync(&wl->tx_work);
 484         cancel_work_sync(&wl->filter_work);
 485
 486         mutex_lock(&wl->mutex);
 487
 488         /* let's notify MAC80211 about the remaining pending TX frames */
 489         wl1251_tx_flush(wl);
 490         wl1251_power_off(wl);
 491
 492         memset(wl->bssid, 0, ETH_ALEN);
 493         wl->listen_int = 1;
 494         wl->bss_type = MAX_BSS_TYPE;
 495
 496         wl->data_in_count = 0;
 497         wl->rx_counter = 0;
 498         wl->rx_handled = 0;
 499         wl->rx_current_buffer = 0;
 500         wl->rx_last_id = 0;
 501         wl->next_tx_complete = 0;
 502         wl->elp = false;
 503         wl->psm = 0;
 504         wl->tx_queue_stopped = false;
 505         wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
 506         wl->channel = WL1251_DEFAULT_CHANNEL;
 507
 508         wl1251_debugfs_reset(wl);
 509
 510         mutex_unlock(&wl->mutex);
 511 }
 512
 513 static int wl1251_op_add_interface(struct ieee80211_hw *hw,
 514                                    struct ieee80211_if_init_conf *conf)
 515 {
 516         struct wl1251 *wl = hw->priv;
 517         int ret = 0;
 518
 519         wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
 520                      conf->type, conf->mac_addr);
 521
 522         mutex_lock(&wl->mutex);
 523         if (wl->vif) {
 524                 ret = -EBUSY;
 525                 goto out;
 526         }
 527
 528         wl->vif = conf->vif;
 529
 530         switch (conf->type) {
 531         case NL80211_IFTYPE_STATION:
 532                 wl->bss_type = BSS_TYPE_STA_BSS;
 533                 break;
 534         case NL80211_IFTYPE_ADHOC:
 535                 wl->bss_type = BSS_TYPE_IBSS;
 536                 break;
 537         default:
 538                 ret = -EOPNOTSUPP;
 539                 goto out;
 540         }
 541
 542         if (memcmp(wl->mac_addr, conf->mac_addr, ETH_ALEN)) {
 543                 memcpy(wl->mac_addr, conf->mac_addr, ETH_ALEN);
 544                 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
 545                 ret = wl1251_acx_station_id(wl);
 546                 if (ret < 0)
 547                         goto out;
 548         }
 549
 550 out:
 551         mutex_unlock(&wl->mutex);
 552         return ret;
 553 }
 554
 555 static void wl1251_op_remove_interface(struct ieee80211_hw *hw,
 556                                          struct ieee80211_if_init_conf *conf)
 557 {
 558         struct wl1251 *wl = hw->priv;
 559
 560         mutex_lock(&wl->mutex);
 561         wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface");
 562         wl->vif = NULL;
 563         mutex_unlock(&wl->mutex);
 564 }
 565
 566 static int wl1251_build_null_data(struct wl1251 *wl)
 567 {
 568         struct wl12xx_null_data_template template;
 569
 570         if (!is_zero_ether_addr(wl->bssid)) {
 571                 memcpy(template.header.da, wl->bssid, ETH_ALEN);
 572                 memcpy(template.header.bssid, wl->bssid, ETH_ALEN);
 573         } else {
 574                 memset(template.header.da, 0xff, ETH_ALEN);
 575                 memset(template.header.bssid, 0xff, ETH_ALEN);
 576         }
 577
 578         memcpy(template.header.sa, wl->mac_addr, ETH_ALEN);
 579         template.header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_DATA |
 580                                                 IEEE80211_STYPE_NULLFUNC |
 581                                                 IEEE80211_FCTL_TODS);
 582
 583         return wl1251_cmd_template_set(wl, CMD_NULL_DATA, &template,
 584                                        sizeof(template));
 585
 586 }
 587
 588 static int wl1251_build_ps_poll(struct wl1251 *wl, u16 aid)
 589 {
 590         struct wl12xx_ps_poll_template template;
 591
 592         memcpy(template.bssid, wl->bssid, ETH_ALEN);
 593         memcpy(template.ta, wl->mac_addr, ETH_ALEN);
 594
 595         /* aid in PS-Poll has its two MSBs each set to 1 */
 596         template.aid = cpu_to_le16(1 << 15 | 1 << 14 | aid);
 597
 598         template.fc = cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
 599
 600         return wl1251_cmd_template_set(wl, CMD_PS_POLL, &template,
 601                                        sizeof(template));
 602
 603 }
 604
 605 static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed)
 606 {
 607         struct wl1251 *wl = hw->priv;
 608         struct ieee80211_conf *conf = &hw->conf;
 609         int channel, ret = 0;
 610
 611         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
 612
 613         wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
 614                      channel,
 615                      conf->flags & IEEE80211_CONF_PS ? "on" : "off",
 616                      conf->power_level);
 617
 618         mutex_lock(&wl->mutex);
 619
 620         ret = wl1251_ps_elp_wakeup(wl);
 621         if (ret < 0)
 622                 goto out;
 623
 624         if (channel != wl->channel) {
 625                 wl->channel = channel;
 626
 627                 ret = wl1251_join(wl, wl->bss_type, wl->channel,
 628                                   wl->beacon_int, wl->dtim_period);
 629                 if (ret < 0)
 630                         goto out_sleep;
 631         }
 632
 633         if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
 634                 wl1251_debug(DEBUG_PSM, "psm enabled");
 635
 636                 wl->psm_requested = true;
 637
 638                 /*
 639                  * We enter PSM only if we're already associated.
 640                  * If we're not, we'll enter it when joining an SSID,
 641                  * through the bss_info_changed() hook.
 642                  */
 643                 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
 644                 if (ret < 0)
 645                         goto out_sleep;
 646         } else if (!(conf->flags & IEEE80211_CONF_PS) &&
 647                    wl->psm_requested) {
 648                 wl1251_debug(DEBUG_PSM, "psm disabled");
 649
 650                 wl->psm_requested = false;
 651
 652                 if (wl->psm) {
 653                         ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
 654                         if (ret < 0)
 655                                 goto out_sleep;
 656                 }
 657         }
 658
 659         if (conf->power_level != wl->power_level) {
 660                 ret = wl1251_acx_tx_power(wl, conf->power_level);
 661                 if (ret < 0)
 662                         goto out_sleep;
 663
 664                 wl->power_level = conf->power_level;
 665         }
 666
 667 out_sleep:
 668         wl1251_ps_elp_sleep(wl);
 669
 670 out:
 671         mutex_unlock(&wl->mutex);
 672
 673         return ret;
 674 }
 675
 676 #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
 677                                   FIF_ALLMULTI | \
 678                                   FIF_FCSFAIL | \
 679                                   FIF_BCN_PRBRESP_PROMISC | \
 680                                   FIF_CONTROL | \
 681                                   FIF_OTHER_BSS)
 682
 683 static void wl1251_op_configure_filter(struct ieee80211_hw *hw,
 684                                        unsigned int changed,
 685                                        unsigned int *total,u64 multicast)
 686 {
 687         struct wl1251 *wl = hw->priv;
 688
 689         wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter");
 690
 691         *total &= WL1251_SUPPORTED_FILTERS;
 692         changed &= WL1251_SUPPORTED_FILTERS;
 693
 694         if (changed == 0)
 695                 /* no filters which we support changed */
 696                 return;
 697
 698         /* FIXME: wl->rx_config and wl->rx_filter are not protected */
 699
 700         wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
 701         wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
 702
 703         if (*total & FIF_PROMISC_IN_BSS) {
 704                 wl->rx_config |= CFG_BSSID_FILTER_EN;
 705                 wl->rx_config |= CFG_RX_ALL_GOOD;
 706         }
 707         if (*total & FIF_ALLMULTI)
 708                 /*
 709                  * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
 710                  * all multicast frames
 711                  */
 712                 wl->rx_config &= ~CFG_MC_FILTER_EN;
 713         if (*total & FIF_FCSFAIL)
 714                 wl->rx_filter |= CFG_RX_FCS_ERROR;
 715         if (*total & FIF_BCN_PRBRESP_PROMISC) {
 716                 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
 717                 wl->rx_config &= ~CFG_SSID_FILTER_EN;
 718         }
 719         if (*total & FIF_CONTROL)
 720                 wl->rx_filter |= CFG_RX_CTL_EN;
 721         if (*total & FIF_OTHER_BSS)
 722                 wl->rx_filter &= ~CFG_BSSID_FILTER_EN;
 723
 724         /*
 725          * FIXME: workqueues need to be properly cancelled on stop(), for
 726          * now let's just disable changing the filter settings. They will
 727          * be updated any on config().
 728          */
 729         /* schedule_work(&wl->filter_work); */
 730 }
 731
 732 /* HW encryption */
 733 static int wl1251_set_key_type(struct wl1251 *wl,
 734                                struct wl1251_cmd_set_keys *key,
 735                                enum set_key_cmd cmd,
 736                                struct ieee80211_key_conf *mac80211_key,
 737                                const u8 *addr)
 738 {
 739         switch (mac80211_key->alg) {
 740         case ALG_WEP:
 741                 if (is_broadcast_ether_addr(addr))
 742                         key->key_type = KEY_WEP_DEFAULT;
 743                 else
 744                         key->key_type = KEY_WEP_ADDR;
 745
 746                 mac80211_key->hw_key_idx = mac80211_key->keyidx;
 747                 break;
 748         case ALG_TKIP:
 749                 if (is_broadcast_ether_addr(addr))
 750                         key->key_type = KEY_TKIP_MIC_GROUP;
 751                 else
 752                         key->key_type = KEY_TKIP_MIC_PAIRWISE;
 753
 754                 mac80211_key->hw_key_idx = mac80211_key->keyidx;
 755                 break;
 756         case ALG_CCMP:
 757                 if (is_broadcast_ether_addr(addr))
 758                         key->key_type = KEY_AES_GROUP;
 759                 else
 760                         key->key_type = KEY_AES_PAIRWISE;
 761                 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
 762                 break;
 763         default:
 764                 wl1251_error("Unknown key algo 0x%x", mac80211_key->alg);
 765                 return -EOPNOTSUPP;
 766         }
 767
 768         return 0;
 769 }
 770
 771 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 772                              struct ieee80211_vif *vif,
 773                              struct ieee80211_sta *sta,
 774                              struct ieee80211_key_conf *key)
 775 {
 776         struct wl1251 *wl = hw->priv;
 777         struct wl1251_cmd_set_keys *wl_cmd;
 778         const u8 *addr;
 779         int ret;
 780
 781         static const u8 bcast_addr[ETH_ALEN] =
 782                 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 783
 784         wl1251_debug(DEBUG_MAC80211, "mac80211 set key");
 785
 786         wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
 787         if (!wl_cmd) {
 788                 ret = -ENOMEM;
 789                 goto out;
 790         }
 791
 792         addr = sta ? sta->addr : bcast_addr;
 793
 794         wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
 795         wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
 796         wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
 797                      key->alg, key->keyidx, key->keylen, key->flags);
 798         wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
 799
 800         if (is_zero_ether_addr(addr)) {
 801                 /* We dont support TX only encryption */
 802                 ret = -EOPNOTSUPP;
 803                 goto out;
 804         }
 805
 806         mutex_lock(&wl->mutex);
 807
 808         ret = wl1251_ps_elp_wakeup(wl);
 809         if (ret < 0)
 810                 goto out_unlock;
 811
 812         switch (cmd) {
 813         case SET_KEY:
 814                 wl_cmd->key_action = KEY_ADD_OR_REPLACE;
 815                 break;
 816         case DISABLE_KEY:
 817                 wl_cmd->key_action = KEY_REMOVE;
 818                 break;
 819         default:
 820                 wl1251_error("Unsupported key cmd 0x%x", cmd);
 821                 break;
 822         }
 823
 824         ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr);
 825         if (ret < 0) {
 826                 wl1251_error("Set KEY type failed");
 827                 goto out_sleep;
 828         }
 829
 830         if (wl_cmd->key_type != KEY_WEP_DEFAULT)
 831                 memcpy(wl_cmd->addr, addr, ETH_ALEN);
 832
 833         if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
 834             (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
 835                 /*
 836                  * We get the key in the following form:
 837                  * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
 838                  * but the target is expecting:
 839                  * TKIP - RX MIC - TX MIC
 840                  */
 841                 memcpy(wl_cmd->key, key->key, 16);
 842                 memcpy(wl_cmd->key + 16, key->key + 24, 8);
 843                 memcpy(wl_cmd->key + 24, key->key + 16, 8);
 844
 845         } else {
 846                 memcpy(wl_cmd->key, key->key, key->keylen);
 847         }
 848         wl_cmd->key_size = key->keylen;
 849
 850         wl_cmd->id = key->keyidx;
 851         wl_cmd->ssid_profile = 0;
 852
 853         wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
 854
 855         ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
 856         if (ret < 0) {
 857                 wl1251_warning("could not set keys");
 858                 goto out_sleep;
 859         }
 860
 861 out_sleep:
 862         wl1251_ps_elp_sleep(wl);
 863
 864 out_unlock:
 865         mutex_unlock(&wl->mutex);
 866
 867 out:
 868         kfree(wl_cmd);
 869
 870         return ret;
 871 }
 872
 873 static int wl1251_build_basic_rates(char *rates)
 874 {
 875         u8 index = 0;
 876
 877         rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_1MB;
 878         rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_2MB;
 879         rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_5MB;
 880         rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_11MB;
 881
 882         return index;
 883 }
 884
 885 static int wl1251_build_extended_rates(char *rates)
 886 {
 887         u8 index = 0;
 888
 889         rates[index++] = IEEE80211_OFDM_RATE_6MB;
 890         rates[index++] = IEEE80211_OFDM_RATE_9MB;
 891         rates[index++] = IEEE80211_OFDM_RATE_12MB;
 892         rates[index++] = IEEE80211_OFDM_RATE_18MB;
 893         rates[index++] = IEEE80211_OFDM_RATE_24MB;
 894         rates[index++] = IEEE80211_OFDM_RATE_36MB;
 895         rates[index++] = IEEE80211_OFDM_RATE_48MB;
 896         rates[index++] = IEEE80211_OFDM_RATE_54MB;
 897
 898         return index;
 899 }
 900
 901
 902 static int wl1251_build_probe_req(struct wl1251 *wl, u8 *ssid, size_t ssid_len)
 903 {
 904         struct wl12xx_probe_req_template template;
 905         struct wl12xx_ie_rates *rates;
 906         char *ptr;
 907         u16 size;
 908
 909         ptr = (char *)&template;
 910         size = sizeof(struct ieee80211_header);
 911
 912         memset(template.header.da, 0xff, ETH_ALEN);
 913         memset(template.header.bssid, 0xff, ETH_ALEN);
 914         memcpy(template.header.sa, wl->mac_addr, ETH_ALEN);
 915         template.header.frame_ctl = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
 916
 917         /* IEs */
 918         /* SSID */
 919         template.ssid.header.id = WLAN_EID_SSID;
 920         template.ssid.header.len = ssid_len;
 921         if (ssid_len && ssid)
 922                 memcpy(template.ssid.ssid, ssid, ssid_len);
 923         size += sizeof(struct wl12xx_ie_header) + ssid_len;
 924         ptr += size;
 925
 926         /* Basic Rates */
 927         rates = (struct wl12xx_ie_rates *)ptr;
 928         rates->header.id = WLAN_EID_SUPP_RATES;
 929         rates->header.len = wl1251_build_basic_rates(rates->rates);
 930         size += sizeof(struct wl12xx_ie_header) + rates->header.len;
 931         ptr += sizeof(struct wl12xx_ie_header) + rates->header.len;
 932
 933         /* Extended rates */
 934         rates = (struct wl12xx_ie_rates *)ptr;
 935         rates->header.id = WLAN_EID_EXT_SUPP_RATES;
 936         rates->header.len = wl1251_build_extended_rates(rates->rates);
 937         size += sizeof(struct wl12xx_ie_header) + rates->header.len;
 938
 939         wl1251_dump(DEBUG_SCAN, "PROBE REQ: ", &template, size);
 940
 941         return wl1251_cmd_template_set(wl, CMD_PROBE_REQ, &template,
 942                                       size);
 943 }
 944
 945 static int wl1251_hw_scan(struct wl1251 *wl, u8 *ssid, size_t len,
 946                           u8 active_scan, u8 high_prio, u8 num_channels,
 947                           u8 probe_requests)
 948 {
 949         struct wl1251_cmd_trigger_scan_to *trigger = NULL;
 950         struct cmd_scan *params = NULL;
 951         int i, ret;
 952         u16 scan_options = 0;
 953
 954         if (wl->scanning)
 955                 return -EINVAL;
 956
 957         params = kzalloc(sizeof(*params), GFP_KERNEL);
 958         if (!params)
 959                 return -ENOMEM;
 960
 961         params->params.rx_config_options = cpu_to_le32(CFG_RX_ALL_GOOD);
 962         params->params.rx_filter_options =
 963                 cpu_to_le32(CFG_RX_PRSP_EN | CFG_RX_MGMT_EN | CFG_RX_BCN_EN);
 964
 965         /* High priority scan */
 966         if (!active_scan)
 967                 scan_options |= SCAN_PASSIVE;
 968         if (high_prio)
 969                 scan_options |= SCAN_PRIORITY_HIGH;
 970         params->params.scan_options = scan_options;
 971
 972         params->params.num_channels = num_channels;
 973         params->params.num_probe_requests = probe_requests;
 974         params->params.tx_rate = cpu_to_le16(1 << 1); /* 2 Mbps */
 975         params->params.tid_trigger = 0;
 976
 977         for (i = 0; i < num_channels; i++) {
 978                 params->channels[i].min_duration = cpu_to_le32(30000);
 979                 params->channels[i].max_duration = cpu_to_le32(60000);
 980                 memset(&params->channels[i].bssid_lsb, 0xff, 4);
 981                 memset(&params->channels[i].bssid_msb, 0xff, 2);
 982                 params->channels[i].early_termination = 0;
 983                 params->channels[i].tx_power_att = 0;
 984                 params->channels[i].channel = i + 1;
 985                 memset(params->channels[i].pad, 0, 3);
 986         }
 987
 988         for (i = num_channels; i < SCAN_MAX_NUM_OF_CHANNELS; i++)
 989                 memset(&params->channels[i], 0,
 990                        sizeof(struct basic_scan_channel_parameters));
 991
 992         if (len && ssid) {
 993                 params->params.ssid_len = len;
 994                 memcpy(params->params.ssid, ssid, len);
 995         } else {
 996                 params->params.ssid_len = 0;
 997                 memset(params->params.ssid, 0, 32);
 998         }
 999
1000         ret = wl1251_build_probe_req(wl, ssid, len);
1001         if (ret < 0) {
1002                 wl1251_error("PROBE request template failed");
1003                 goto out;
1004         }
1005
1006         trigger = kzalloc(sizeof(*trigger), GFP_KERNEL);
1007         if (!trigger)
1008                 goto out;
1009
1010         trigger->timeout = 0;
1011
1012         ret = wl1251_cmd_send(wl, CMD_TRIGGER_SCAN_TO, trigger,
1013                               sizeof(*trigger));
1014         if (ret < 0) {
1015                 wl1251_error("trigger scan to failed for hw scan");
1016                 goto out;
1017         }
1018
1019         wl1251_dump(DEBUG_SCAN, "SCAN: ", params, sizeof(*params));
1020
1021         wl->scanning = true;
1022
1023         ret = wl1251_cmd_send(wl, CMD_SCAN, params, sizeof(*params));
1024         if (ret < 0)
1025                 wl1251_error("SCAN failed");
1026
1027         wl1251_mem_read(wl, wl->cmd_box_addr, params, sizeof(*params));
1028
1029         if (params->header.status != CMD_STATUS_SUCCESS) {
1030                 wl1251_error("TEST command answer error: %d",
1031                              params->header.status);
1032                 wl->scanning = false;
1033                 ret = -EIO;
1034                 goto out;
1035         }
1036
1037 out:
1038         kfree(params);
1039         return ret;
1040
1041 }
1042
1043 static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
1044                              struct cfg80211_scan_request *req)
1045 {
1046         struct wl1251 *wl = hw->priv;
1047         int ret;
1048         u8 *ssid = NULL;
1049         size_t ssid_len = 0;
1050
1051         wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan");
1052
1053         if (req->n_ssids) {
1054                 ssid = req->ssids[0].ssid;
1055                 ssid_len = req->ssids[0].ssid_len;
1056         }
1057
1058         mutex_lock(&wl->mutex);
1059
1060         ret = wl1251_ps_elp_wakeup(wl);
1061         if (ret < 0)
1062                 goto out;
1063
1064         ret = wl1251_hw_scan(hw->priv, ssid, ssid_len, 1, 0, 13, 3);
1065
1066         wl1251_ps_elp_sleep(wl);
1067
1068 out:
1069         mutex_unlock(&wl->mutex);
1070
1071         return ret;
1072 }
1073
1074 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1075 {
1076         struct wl1251 *wl = hw->priv;
1077         int ret;
1078
1079         mutex_lock(&wl->mutex);
1080
1081         ret = wl1251_ps_elp_wakeup(wl);
1082         if (ret < 0)
1083                 goto out;
1084
1085         ret = wl1251_acx_rts_threshold(wl, (u16) value);
1086         if (ret < 0)
1087                 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret);
1088
1089         wl1251_ps_elp_sleep(wl);
1090
1091 out:
1092         mutex_unlock(&wl->mutex);
1093
1094         return ret;
1095 }
1096
1097 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
1098                                        struct ieee80211_vif *vif,
1099                                        struct ieee80211_bss_conf *bss_conf,
1100                                        u32 changed)
1101 {
1102         enum wl1251_cmd_ps_mode mode;
1103         struct wl1251 *wl = hw->priv;
1104         struct sk_buff *beacon;
1105         int ret;
1106
1107         wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed");
1108
1109         mutex_lock(&wl->mutex);
1110
1111         ret = wl1251_ps_elp_wakeup(wl);
1112         if (ret < 0)
1113                 goto out;
1114
1115         if (changed & BSS_CHANGED_BSSID) {
1116                 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
1117
1118                 ret = wl1251_build_null_data(wl);
1119                 if (ret < 0)
1120                         goto out;
1121
1122                 if (wl->bss_type != BSS_TYPE_IBSS) {
1123                         ret = wl1251_join(wl, wl->bss_type, wl->channel,
1124                                           wl->beacon_int, wl->dtim_period);
1125                         if (ret < 0)
1126                                 goto out_sleep;
1127                 }
1128         }
1129
1130         if (changed & BSS_CHANGED_ASSOC) {
1131                 if (bss_conf->assoc) {
1132                         wl->beacon_int = bss_conf->beacon_int;
1133                         wl->dtim_period = bss_conf->dtim_period;
1134
1135                         ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int,
1136                                                           wl->dtim_period);
1137                         wl->aid = bss_conf->aid;
1138
1139                         ret = wl1251_build_ps_poll(wl, wl->aid);
1140                         if (ret < 0)
1141                                 goto out_sleep;
1142
1143                         ret = wl1251_acx_aid(wl, wl->aid);
1144                         if (ret < 0)
1145                                 goto out_sleep;
1146
1147                         /* If we want to go in PSM but we're not there yet */
1148                         if (wl->psm_requested && !wl->psm) {
1149                                 mode = STATION_POWER_SAVE_MODE;
1150                                 ret = wl1251_ps_set_mode(wl, mode);
1151                                 if (ret < 0)
1152                                         goto out_sleep;
1153                         }
1154                 } else {
1155                         /* use defaults when not associated */
1156                         wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1157                         wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1158                 }
1159         }
1160         if (changed & BSS_CHANGED_ERP_SLOT) {
1161                 if (bss_conf->use_short_slot)
1162                         ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT);
1163                 else
1164                         ret = wl1251_acx_slot(wl, SLOT_TIME_LONG);
1165                 if (ret < 0) {
1166                         wl1251_warning("Set slot time failed %d", ret);
1167                         goto out_sleep;
1168                 }
1169         }
1170
1171         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1172                 if (bss_conf->use_short_preamble)
1173                         wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1174                 else
1175                         wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1176         }
1177
1178         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1179                 if (bss_conf->use_cts_prot)
1180                         ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1181                 else
1182                         ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1183                 if (ret < 0) {
1184                         wl1251_warning("Set ctsprotect failed %d", ret);
1185                         goto out;
1186                 }
1187         }
1188
1189         if (changed & BSS_CHANGED_BEACON) {
1190                 beacon = ieee80211_beacon_get(hw, vif);
1191                 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data,
1192                                               beacon->len);
1193
1194                 if (ret < 0) {
1195                         dev_kfree_skb(beacon);
1196                         goto out;
1197                 }
1198
1199                 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
1200                                               beacon->len);
1201
1202                 dev_kfree_skb(beacon);
1203
1204                 if (ret < 0)
1205                         goto out;
1206
1207                 ret = wl1251_join(wl, wl->bss_type, wl->beacon_int,
1208                                   wl->channel, wl->dtim_period);
1209
1210                 if (ret < 0)
1211                         goto out;
1212         }
1213
1214 out_sleep:
1215         wl1251_ps_elp_sleep(wl);
1216
1217 out:
1218         mutex_unlock(&wl->mutex);
1219 }
1220
1221
1222 /* can't be const, mac80211 writes to this */
1223 static struct ieee80211_rate wl1251_rates[] = {
1224         { .bitrate = 10,
1225           .hw_value = 0x1,
1226           .hw_value_short = 0x1, },
1227         { .bitrate = 20,
1228           .hw_value = 0x2,
1229           .hw_value_short = 0x2,
1230           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1231         { .bitrate = 55,
1232           .hw_value = 0x4,
1233           .hw_value_short = 0x4,
1234           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1235         { .bitrate = 110,
1236           .hw_value = 0x20,
1237           .hw_value_short = 0x20,
1238           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1239         { .bitrate = 60,
1240           .hw_value = 0x8,
1241           .hw_value_short = 0x8, },
1242         { .bitrate = 90,
1243           .hw_value = 0x10,
1244           .hw_value_short = 0x10, },
1245         { .bitrate = 120,
1246           .hw_value = 0x40,
1247           .hw_value_short = 0x40, },
1248         { .bitrate = 180,
1249           .hw_value = 0x80,
1250           .hw_value_short = 0x80, },
1251         { .bitrate = 240,
1252           .hw_value = 0x200,
1253           .hw_value_short = 0x200, },
1254         { .bitrate = 360,
1255          .hw_value = 0x400,
1256          .hw_value_short = 0x400, },
1257         { .bitrate = 480,
1258           .hw_value = 0x800,
1259           .hw_value_short = 0x800, },
1260         { .bitrate = 540,
1261           .hw_value = 0x1000,
1262           .hw_value_short = 0x1000, },
1263 };
1264
1265 /* can't be const, mac80211 writes to this */
1266 static struct ieee80211_channel wl1251_channels[] = {
1267         { .hw_value = 1, .center_freq = 2412},
1268         { .hw_value = 2, .center_freq = 2417},
1269         { .hw_value = 3, .center_freq = 2422},
1270         { .hw_value = 4, .center_freq = 2427},
1271         { .hw_value = 5, .center_freq = 2432},
1272         { .hw_value = 6, .center_freq = 2437},
1273         { .hw_value = 7, .center_freq = 2442},
1274         { .hw_value = 8, .center_freq = 2447},
1275         { .hw_value = 9, .center_freq = 2452},
1276         { .hw_value = 10, .center_freq = 2457},
1277         { .hw_value = 11, .center_freq = 2462},
1278         { .hw_value = 12, .center_freq = 2467},
1279         { .hw_value = 13, .center_freq = 2472},
1280 };
1281
1282 static int wl1251_op_conf_tx(struct ieee80211_hw *hw, u16 queue,
1283                              const struct ieee80211_tx_queue_params *params)
1284 {
1285         struct wl1251 *wl = hw->priv;
1286         int ret;
1287
1288         mutex_lock(&wl->mutex);
1289
1290         wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
1291
1292         ret = wl1251_ps_elp_wakeup(wl);
1293         if (ret < 0)
1294                 goto out;
1295
1296         ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue),
1297                                 params->cw_min, params->cw_max,
1298                                 params->aifs, params->txop);
1299         if (ret < 0)
1300                 goto out_sleep;
1301
1302         ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue),
1303                                  CHANNEL_TYPE_EDCF,
1304                                  wl1251_tx_get_queue(queue),
1305                                  WL1251_ACX_PS_SCHEME_LEGACY,
1306                                  WL1251_ACX_ACK_POLICY_LEGACY);
1307         if (ret < 0)
1308                 goto out_sleep;
1309
1310 out_sleep:
1311         wl1251_ps_elp_sleep(wl);
1312
1313 out:
1314         mutex_unlock(&wl->mutex);
1315
1316         return ret;
1317 }
1318
1319 /* can't be const, mac80211 writes to this */
1320 static struct ieee80211_supported_band wl1251_band_2ghz = {
1321         .channels = wl1251_channels,
1322         .n_channels = ARRAY_SIZE(wl1251_channels),
1323         .bitrates = wl1251_rates,
1324         .n_bitrates = ARRAY_SIZE(wl1251_rates),
1325 };
1326
1327 static const struct ieee80211_ops wl1251_ops = {
1328         .start = wl1251_op_start,
1329         .stop = wl1251_op_stop,
1330         .add_interface = wl1251_op_add_interface,
1331         .remove_interface = wl1251_op_remove_interface,
1332         .config = wl1251_op_config,
1333         .configure_filter = wl1251_op_configure_filter,
1334         .tx = wl1251_op_tx,
1335         .set_key = wl1251_op_set_key,
1336         .hw_scan = wl1251_op_hw_scan,
1337         .bss_info_changed = wl1251_op_bss_info_changed,
1338         .set_rts_threshold = wl1251_op_set_rts_threshold,
1339         .conf_tx = wl1251_op_conf_tx,
1340 };
1341
1342 static int wl1251_register_hw(struct wl1251 *wl)
1343 {
1344         int ret;
1345
1346         if (wl->mac80211_registered)
1347                 return 0;
1348
1349         SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1350
1351         ret = ieee80211_register_hw(wl->hw);
1352         if (ret < 0) {
1353                 wl1251_error("unable to register mac80211 hw: %d", ret);
1354                 return ret;
1355         }
1356
1357         wl->mac80211_registered = true;
1358
1359         wl1251_notice("loaded");
1360
1361         return 0;
1362 }
1363
1364 int wl1251_init_ieee80211(struct wl1251 *wl)
1365 {
1366         int ret;
1367
1368         /* The tx descriptor buffer and the TKIP space */
1369         wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
1370                 + WL1251_TKIP_IV_SPACE;
1371
1372         /* unit us */
1373         /* FIXME: find a proper value */
1374         wl->hw->channel_change_time = 10000;
1375
1376         wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1377                 IEEE80211_HW_NOISE_DBM |
1378                 IEEE80211_HW_SUPPORTS_PS |
1379                 IEEE80211_HW_BEACON_FILTER;
1380
1381         wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1382         wl->hw->wiphy->max_scan_ssids = 1;
1383         wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz;
1384
1385         wl->hw->queues = 4;
1386
1387         ret = wl1251_register_hw(wl);
1388         if (ret)
1389                 goto out;
1390
1391         wl1251_debugfs_init(wl);
1392         wl1251_notice("initialized");
1393
1394         ret = 0;
1395
1396 out:
1397         return ret;
1398 }
1399 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211);
1400
1401 struct ieee80211_hw *wl1251_alloc_hw(void)
1402 {
1403         struct ieee80211_hw *hw;
1404         struct wl1251 *wl;
1405         int i;
1406         static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1407
1408         hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops);
1409         if (!hw) {
1410                 wl1251_error("could not alloc ieee80211_hw");
1411                 return ERR_PTR(-ENOMEM);
1412         }
1413
1414         wl = hw->priv;
1415         memset(wl, 0, sizeof(*wl));
1416
1417         wl->hw = hw;
1418
1419         wl->data_in_count = 0;
1420
1421         skb_queue_head_init(&wl->tx_queue);
1422
1423         INIT_WORK(&wl->filter_work, wl1251_filter_work);
1424         INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work);
1425         wl->channel = WL1251_DEFAULT_CHANNEL;
1426         wl->scanning = false;
1427         wl->default_key = 0;
1428         wl->listen_int = 1;
1429         wl->rx_counter = 0;
1430         wl->rx_handled = 0;
1431         wl->rx_current_buffer = 0;
1432         wl->rx_last_id = 0;
1433         wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
1434         wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
1435         wl->elp = false;
1436         wl->psm = 0;
1437         wl->psm_requested = false;
1438         wl->tx_queue_stopped = false;
1439         wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
1440         wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1441         wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1442         wl->vif = NULL;
1443
1444         for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1445                 wl->tx_frames[i] = NULL;
1446
1447         wl->next_tx_complete = 0;
1448
1449         INIT_WORK(&wl->irq_work, wl1251_irq_work);
1450         INIT_WORK(&wl->tx_work, wl1251_tx_work);
1451
1452         /*
1453          * In case our MAC address is not correctly set,
1454          * we use a random but Nokia MAC.
1455          */
1456         memcpy(wl->mac_addr, nokia_oui, 3);
1457         get_random_bytes(wl->mac_addr + 3, 3);
1458
1459         wl->state = WL1251_STATE_OFF;
1460         mutex_init(&wl->mutex);
1461
1462         wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
1463         wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
1464
1465         wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1466         if (!wl->rx_descriptor) {
1467                 wl1251_error("could not allocate memory for rx descriptor");
1468                 ieee80211_free_hw(hw);
1469                 return ERR_PTR(-ENOMEM);
1470         }
1471
1472         return hw;
1473 }
1474 EXPORT_SYMBOL_GPL(wl1251_alloc_hw);
1475
1476 int wl1251_free_hw(struct wl1251 *wl)
1477 {
1478         ieee80211_unregister_hw(wl->hw);
1479
1480         wl1251_debugfs_exit(wl);
1481
1482         kfree(wl->target_mem_map);
1483         kfree(wl->data_path);
1484         vfree(wl->fw);
1485         wl->fw = NULL;
1486         kfree(wl->nvs);
1487         wl->nvs = NULL;
1488
1489         kfree(wl->rx_descriptor);
1490         wl->rx_descriptor = NULL;
1491
1492         ieee80211_free_hw(wl->hw);
1493
1494         return 0;
1495 }
1496 EXPORT_SYMBOL_GPL(wl1251_free_hw);
1497
1498 MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core");
1499 MODULE_LICENSE("GPL");
1500 MODULE_AUTHOR("Kalle Valo <kalle.valo@nokia.com>");
1501 MODULE_ALIAS("spi:wl1251");
1502 MODULE_FIRMWARE(WL1251_FW_NAME);