drivers/net/wireless/wl12xx/wl1271_main.c

   1 /*
   2  * This file is part of wl1271
   3  *
   4  * Copyright (C) 2008-2009 Nokia Corporation
   5  *
   6  * Contact: Luciano Coelho <luciano.coelho@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/platform_device.h>
  26 #include <linux/interrupt.h>
  27 #include <linux/firmware.h>
  28 #include <linux/delay.h>
  29 #include <linux/irq.h>
  30 #include <linux/spi/spi.h>
  31 #include <linux/crc32.h>
  32 #include <linux/etherdevice.h>
  33 #include <linux/spi/wl12xx.h>
  34
  35 #include "wl1271.h"
  36 #include "wl12xx_80211.h"
  37 #include "wl1271_reg.h"
  38 #include "wl1271_spi.h"
  39 #include "wl1271_event.h"
  40 #include "wl1271_tx.h"
  41 #include "wl1271_rx.h"
  42 #include "wl1271_ps.h"
  43 #include "wl1271_init.h"
  44 #include "wl1271_debugfs.h"
  45 #include "wl1271_cmd.h"
  46 #include "wl1271_boot.h"
  47
  48 static int wl1271_plt_init(struct wl1271 *wl)
  49 {
  50         int ret;
  51
  52         ret = wl1271_acx_init_mem_config(wl);
  53         if (ret < 0)
  54                 return ret;
  55
  56         ret = wl1271_cmd_data_path(wl, wl->channel, 1);
  57         if (ret < 0)
  58                 return ret;
  59
  60         return 0;
  61 }
  62
  63 static void wl1271_disable_interrupts(struct wl1271 *wl)
  64 {
  65         disable_irq(wl->irq);
  66 }
  67
  68 static void wl1271_power_off(struct wl1271 *wl)
  69 {
  70         wl->set_power(false);
  71 }
  72
  73 static void wl1271_power_on(struct wl1271 *wl)
  74 {
  75         wl->set_power(true);
  76 }
  77
  78 static void wl1271_fw_status(struct wl1271 *wl, struct wl1271_fw_status *status)
  79 {
  80         u32 total = 0;
  81         int i;
  82
  83         /*
  84          * FIXME: Reading the FW status directly from the registers seems to
  85          * be the right thing to do, but it doesn't work.  And in the
  86          * reference driver, there is a workaround called
  87          * USE_SDIO_24M_WORKAROUND, which reads the status from memory
  88          * instead, so we do the same here.
  89          */
  90
  91         wl1271_spi_mem_read(wl, STATUS_MEM_ADDRESS, status, sizeof(*status));
  92
  93         wl1271_debug(DEBUG_IRQ, "intr: 0x%x (fw_rx_counter = %d, "
  94                      "drv_rx_counter = %d, tx_results_counter = %d)",
  95                      status->intr,
  96                      status->fw_rx_counter,
  97                      status->drv_rx_counter,
  98                      status->tx_results_counter);
  99
 100         /* update number of available TX blocks */
 101         for (i = 0; i < NUM_TX_QUEUES; i++) {
 102                 u32 cnt = status->tx_released_blks[i] - wl->tx_blocks_freed[i];
 103                 wl->tx_blocks_freed[i] = status->tx_released_blks[i];
 104                 wl->tx_blocks_available += cnt;
 105                 total += cnt;
 106         }
 107
 108         /* if more blocks are available now, schedule some tx work */
 109         if (total && !skb_queue_empty(&wl->tx_queue))
 110                 ieee80211_queue_work(wl->hw, &wl->tx_work);
 111
 112         /* update the host-chipset time offset */
 113         wl->time_offset = jiffies_to_usecs(jiffies) - status->fw_localtime;
 114 }
 115
 116 #define WL1271_IRQ_MAX_LOOPS 10
 117 static void wl1271_irq_work(struct work_struct *work)
 118 {
 119         u32 intr, ctr = WL1271_IRQ_MAX_LOOPS;
 120         int ret;
 121         struct wl1271 *wl =
 122                 container_of(work, struct wl1271, irq_work);
 123
 124         mutex_lock(&wl->mutex);
 125
 126         wl1271_debug(DEBUG_IRQ, "IRQ work");
 127
 128         if (wl->state == WL1271_STATE_OFF)
 129                 goto out;
 130
 131         ret = wl1271_ps_elp_wakeup(wl, true);
 132         if (ret < 0)
 133                 goto out;
 134
 135         wl1271_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1271_ACX_INTR_ALL);
 136
 137         intr = wl1271_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
 138         if (!intr) {
 139                 wl1271_debug(DEBUG_IRQ, "Zero interrupt received.");
 140                 goto out_sleep;
 141         }
 142
 143         intr &= WL1271_INTR_MASK;
 144
 145         do {
 146                 wl1271_fw_status(wl, wl->fw_status);
 147
 148
 149                 if (intr & (WL1271_ACX_INTR_EVENT_A |
 150                             WL1271_ACX_INTR_EVENT_B)) {
 151                         wl1271_debug(DEBUG_IRQ,
 152                                      "WL1271_ACX_INTR_EVENT (0x%x)", intr);
 153                         if (intr & WL1271_ACX_INTR_EVENT_A)
 154                                 wl1271_event_handle(wl, 0);
 155                         else
 156                                 wl1271_event_handle(wl, 1);
 157                 }
 158
 159                 if (intr & WL1271_ACX_INTR_INIT_COMPLETE)
 160                         wl1271_debug(DEBUG_IRQ,
 161                                      "WL1271_ACX_INTR_INIT_COMPLETE");
 162
 163                 if (intr & WL1271_ACX_INTR_HW_AVAILABLE)
 164                         wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_HW_AVAILABLE");
 165
 166                 if (intr & WL1271_ACX_INTR_DATA) {
 167                         u8 tx_res_cnt = wl->fw_status->tx_results_counter -
 168                                 wl->tx_results_count;
 169
 170                         wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_DATA");
 171
 172                         /* check for tx results */
 173                         if (tx_res_cnt)
 174                                 wl1271_tx_complete(wl, tx_res_cnt);
 175
 176                         wl1271_rx(wl, wl->fw_status);
 177                 }
 178
 179                 intr = wl1271_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
 180                 intr &= WL1271_INTR_MASK;
 181         } while (intr && --ctr);
 182
 183 out_sleep:
 184         wl1271_reg_write32(wl, ACX_REG_INTERRUPT_MASK,
 185                            WL1271_ACX_INTR_ALL & ~(WL1271_INTR_MASK));
 186         wl1271_ps_elp_sleep(wl);
 187
 188 out:
 189         mutex_unlock(&wl->mutex);
 190 }
 191
 192 static irqreturn_t wl1271_irq(int irq, void *cookie)
 193 {
 194         struct wl1271 *wl;
 195         unsigned long flags;
 196
 197         wl1271_debug(DEBUG_IRQ, "IRQ");
 198
 199         wl = cookie;
 200
 201         /* complete the ELP completion */
 202         spin_lock_irqsave(&wl->wl_lock, flags);
 203         if (wl->elp_compl) {
 204                 complete(wl->elp_compl);
 205                 wl->elp_compl = NULL;
 206         }
 207
 208         ieee80211_queue_work(wl->hw, &wl->irq_work);
 209         spin_unlock_irqrestore(&wl->wl_lock, flags);
 210
 211         return IRQ_HANDLED;
 212 }
 213
 214 static int wl1271_fetch_firmware(struct wl1271 *wl)
 215 {
 216         const struct firmware *fw;
 217         int ret;
 218
 219         ret = request_firmware(&fw, WL1271_FW_NAME, &wl->spi->dev);
 220
 221         if (ret < 0) {
 222                 wl1271_error("could not get firmware: %d", ret);
 223                 return ret;
 224         }
 225
 226         if (fw->size % 4) {
 227                 wl1271_error("firmware size is not multiple of 32 bits: %zu",
 228                              fw->size);
 229                 ret = -EILSEQ;
 230                 goto out;
 231         }
 232
 233         wl->fw_len = fw->size;
 234         wl->fw = kmalloc(wl->fw_len, GFP_KERNEL);
 235
 236         if (!wl->fw) {
 237                 wl1271_error("could not allocate memory for the firmware");
 238                 ret = -ENOMEM;
 239                 goto out;
 240         }
 241
 242         memcpy(wl->fw, fw->data, wl->fw_len);
 243
 244         ret = 0;
 245
 246 out:
 247         release_firmware(fw);
 248
 249         return ret;
 250 }
 251
 252 static int wl1271_fetch_nvs(struct wl1271 *wl)
 253 {
 254         const struct firmware *fw;
 255         int ret;
 256
 257         ret = request_firmware(&fw, WL1271_NVS_NAME, &wl->spi->dev);
 258
 259         if (ret < 0) {
 260                 wl1271_error("could not get nvs file: %d", ret);
 261                 return ret;
 262         }
 263
 264         if (fw->size % 4) {
 265                 wl1271_error("nvs size is not multiple of 32 bits: %zu",
 266                              fw->size);
 267                 ret = -EILSEQ;
 268                 goto out;
 269         }
 270
 271         wl->nvs_len = fw->size;
 272         wl->nvs = kmalloc(wl->nvs_len, GFP_KERNEL);
 273
 274         if (!wl->nvs) {
 275                 wl1271_error("could not allocate memory for the nvs file");
 276                 ret = -ENOMEM;
 277                 goto out;
 278         }
 279
 280         memcpy(wl->nvs, fw->data, wl->nvs_len);
 281
 282         ret = 0;
 283
 284 out:
 285         release_firmware(fw);
 286
 287         return ret;
 288 }
 289
 290 static void wl1271_fw_wakeup(struct wl1271 *wl)
 291 {
 292         u32 elp_reg;
 293
 294         elp_reg = ELPCTRL_WAKE_UP;
 295         wl1271_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
 296 }
 297
 298 static int wl1271_setup(struct wl1271 *wl)
 299 {
 300         wl->fw_status = kmalloc(sizeof(*wl->fw_status), GFP_KERNEL);
 301         if (!wl->fw_status)
 302                 return -ENOMEM;
 303
 304         wl->tx_res_if = kmalloc(sizeof(*wl->tx_res_if), GFP_KERNEL);
 305         if (!wl->tx_res_if) {
 306                 kfree(wl->fw_status);
 307                 return -ENOMEM;
 308         }
 309
 310         INIT_WORK(&wl->irq_work, wl1271_irq_work);
 311         INIT_WORK(&wl->tx_work, wl1271_tx_work);
 312         return 0;
 313 }
 314
 315 static int wl1271_chip_wakeup(struct wl1271 *wl)
 316 {
 317         int ret = 0;
 318
 319         wl1271_power_on(wl);
 320         msleep(WL1271_POWER_ON_SLEEP);
 321         wl1271_spi_reset(wl);
 322         wl1271_spi_init(wl);
 323
 324         /* We don't need a real memory partition here, because we only want
 325          * to use the registers at this point. */
 326         wl1271_set_partition(wl,
 327                              0x00000000,
 328                              0x00000000,
 329                              REGISTERS_BASE,
 330                              REGISTERS_DOWN_SIZE);
 331
 332         /* ELP module wake up */
 333         wl1271_fw_wakeup(wl);
 334
 335         /* whal_FwCtrl_BootSm() */
 336
 337         /* 0. read chip id from CHIP_ID */
 338         wl->chip.id = wl1271_reg_read32(wl, CHIP_ID_B);
 339
 340         /* 1. check if chip id is valid */
 341
 342         switch (wl->chip.id) {
 343         case CHIP_ID_1271_PG10:
 344                 wl1271_warning("chip id 0x%x (1271 PG10) support is obsolete",
 345                                wl->chip.id);
 346
 347                 ret = wl1271_setup(wl);
 348                 if (ret < 0)
 349                         goto out;
 350                 break;
 351         case CHIP_ID_1271_PG20:
 352                 wl1271_debug(DEBUG_BOOT, "chip id 0x%x (1271 PG20)",
 353                              wl->chip.id);
 354
 355                 ret = wl1271_setup(wl);
 356                 if (ret < 0)
 357                         goto out;
 358                 break;
 359         default:
 360                 wl1271_error("unsupported chip id: 0x%x", wl->chip.id);
 361                 ret = -ENODEV;
 362                 goto out;
 363         }
 364
 365         if (wl->fw == NULL) {
 366                 ret = wl1271_fetch_firmware(wl);
 367                 if (ret < 0)
 368                         goto out;
 369         }
 370
 371         /* No NVS from netlink, try to get it from the filesystem */
 372         if (wl->nvs == NULL) {
 373                 ret = wl1271_fetch_nvs(wl);
 374                 if (ret < 0)
 375                         goto out;
 376         }
 377
 378 out:
 379         return ret;
 380 }
 381
 382 struct wl1271_filter_params {
 383         unsigned int filters;
 384         unsigned int changed;
 385         int mc_list_length;
 386         u8 mc_list[ACX_MC_ADDRESS_GROUP_MAX][ETH_ALEN];
 387 };
 388
 389 #define WL1271_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
 390                                   FIF_ALLMULTI | \
 391                                   FIF_FCSFAIL | \
 392                                   FIF_BCN_PRBRESP_PROMISC | \
 393                                   FIF_CONTROL | \
 394                                   FIF_OTHER_BSS)
 395
 396 static void wl1271_filter_work(struct work_struct *work)
 397 {
 398         struct wl1271 *wl =
 399                 container_of(work, struct wl1271, filter_work);
 400         struct wl1271_filter_params *fp;
 401         unsigned long flags;
 402         bool enabled = true;
 403         int ret;
 404
 405         /* first, get the filter parameters */
 406         spin_lock_irqsave(&wl->wl_lock, flags);
 407         fp = wl->filter_params;
 408         wl->filter_params = NULL;
 409         spin_unlock_irqrestore(&wl->wl_lock, flags);
 410
 411         if (!fp)
 412                 return;
 413
 414         /* then, lock the mutex without risk of lock-up */
 415         mutex_lock(&wl->mutex);
 416
 417         if (wl->state == WL1271_STATE_OFF)
 418                 goto out;
 419
 420         ret = wl1271_ps_elp_wakeup(wl, false);
 421         if (ret < 0)
 422                 goto out;
 423
 424         /* configure the mc filter regardless of the changed flags */
 425         if (fp->filters & FIF_ALLMULTI)
 426                 enabled = false;
 427
 428         ret = wl1271_acx_group_address_tbl(wl, enabled,
 429                                            fp->mc_list, fp->mc_list_length);
 430         if (ret < 0)
 431                 goto out_sleep;
 432
 433         /* determine, whether supported filter values have changed */
 434         if (fp->changed == 0)
 435                 goto out;
 436
 437         /* apply configured filters */
 438         ret = wl1271_cmd_join(wl);
 439         if (ret < 0)
 440                 goto out_sleep;
 441
 442 out_sleep:
 443         wl1271_ps_elp_sleep(wl);
 444
 445 out:
 446         mutex_unlock(&wl->mutex);
 447         kfree(fp);
 448 }
 449
 450 int wl1271_plt_start(struct wl1271 *wl)
 451 {
 452         int ret;
 453
 454         mutex_lock(&wl->mutex);
 455
 456         wl1271_notice("power up");
 457
 458         if (wl->state != WL1271_STATE_OFF) {
 459                 wl1271_error("cannot go into PLT state because not "
 460                              "in off state: %d", wl->state);
 461                 ret = -EBUSY;
 462                 goto out;
 463         }
 464
 465         wl->state = WL1271_STATE_PLT;
 466
 467         ret = wl1271_chip_wakeup(wl);
 468         if (ret < 0)
 469                 goto out;
 470
 471         ret = wl1271_boot(wl);
 472         if (ret < 0)
 473                 goto out;
 474
 475         wl1271_notice("firmware booted in PLT mode (%s)", wl->chip.fw_ver);
 476
 477         ret = wl1271_plt_init(wl);
 478         if (ret < 0)
 479                 goto out;
 480
 481 out:
 482         mutex_unlock(&wl->mutex);
 483
 484         return ret;
 485 }
 486
 487 int wl1271_plt_stop(struct wl1271 *wl)
 488 {
 489         int ret = 0;
 490
 491         mutex_lock(&wl->mutex);
 492
 493         wl1271_notice("power down");
 494
 495         if (wl->state != WL1271_STATE_PLT) {
 496                 wl1271_error("cannot power down because not in PLT "
 497                              "state: %d", wl->state);
 498                 ret = -EBUSY;
 499                 goto out;
 500         }
 501
 502         wl1271_disable_interrupts(wl);
 503         wl1271_power_off(wl);
 504
 505         wl->state = WL1271_STATE_OFF;
 506
 507 out:
 508         mutex_unlock(&wl->mutex);
 509
 510         return ret;
 511 }
 512
 513
 514 static int wl1271_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 515 {
 516         struct wl1271 *wl = hw->priv;
 517
 518         skb_queue_tail(&wl->tx_queue, skb);
 519
 520         /*
 521          * The chip specific setup must run before the first TX packet -
 522          * before that, the tx_work will not be initialized!
 523          */
 524
 525         ieee80211_queue_work(wl->hw, &wl->tx_work);
 526
 527         /*
 528          * The workqueue is slow to process the tx_queue and we need stop
 529          * the queue here, otherwise the queue will get too long.
 530          */
 531         if (skb_queue_len(&wl->tx_queue) >= WL1271_TX_QUEUE_MAX_LENGTH) {
 532                 ieee80211_stop_queues(wl->hw);
 533
 534                 /*
 535                  * FIXME: this is racy, the variable is not properly
 536                  * protected. Maybe fix this by removing the stupid
 537                  * variable altogether and checking the real queue state?
 538                  */
 539                 wl->tx_queue_stopped = true;
 540         }
 541
 542         return NETDEV_TX_OK;
 543 }
 544
 545 static int wl1271_op_start(struct ieee80211_hw *hw)
 546 {
 547         struct wl1271 *wl = hw->priv;
 548         int ret = 0;
 549
 550         wl1271_debug(DEBUG_MAC80211, "mac80211 start");
 551
 552         mutex_lock(&wl->mutex);
 553
 554         if (wl->state != WL1271_STATE_OFF) {
 555                 wl1271_error("cannot start because not in off state: %d",
 556                              wl->state);
 557                 ret = -EBUSY;
 558                 goto out;
 559         }
 560
 561         ret = wl1271_chip_wakeup(wl);
 562         if (ret < 0)
 563                 goto out;
 564
 565         ret = wl1271_boot(wl);
 566         if (ret < 0)
 567                 goto out;
 568
 569         ret = wl1271_hw_init(wl);
 570         if (ret < 0)
 571                 goto out;
 572
 573         wl->state = WL1271_STATE_ON;
 574
 575         wl1271_info("firmware booted (%s)", wl->chip.fw_ver);
 576
 577 out:
 578         if (ret < 0)
 579                 wl1271_power_off(wl);
 580
 581         mutex_unlock(&wl->mutex);
 582
 583         return ret;
 584 }
 585
 586 static void wl1271_op_stop(struct ieee80211_hw *hw)
 587 {
 588         struct wl1271 *wl = hw->priv;
 589         unsigned long flags;
 590         int i;
 591
 592         wl1271_info("down");
 593
 594         wl1271_debug(DEBUG_MAC80211, "mac80211 stop");
 595
 596         /* complete/cancel ongoing work */
 597         cancel_work_sync(&wl->filter_work);
 598         spin_lock_irqsave(&wl->wl_lock, flags);
 599         kfree(wl->filter_params);
 600         wl->filter_params = NULL;
 601         spin_unlock_irqrestore(&wl->wl_lock, flags);
 602
 603         mutex_lock(&wl->mutex);
 604
 605         WARN_ON(wl->state != WL1271_STATE_ON);
 606
 607         if (wl->scanning) {
 608                 mutex_unlock(&wl->mutex);
 609                 ieee80211_scan_completed(wl->hw, true);
 610                 mutex_lock(&wl->mutex);
 611                 wl->scanning = false;
 612         }
 613
 614         wl->state = WL1271_STATE_OFF;
 615
 616         wl1271_disable_interrupts(wl);
 617
 618         mutex_unlock(&wl->mutex);
 619
 620         cancel_work_sync(&wl->irq_work);
 621         cancel_work_sync(&wl->tx_work);
 622         cancel_work_sync(&wl->filter_work);
 623
 624         mutex_lock(&wl->mutex);
 625
 626         /* let's notify MAC80211 about the remaining pending TX frames */
 627         wl1271_tx_flush(wl);
 628         wl1271_power_off(wl);
 629
 630         memset(wl->bssid, 0, ETH_ALEN);
 631         memset(wl->ssid, 0, IW_ESSID_MAX_SIZE + 1);
 632         wl->ssid_len = 0;
 633         wl->listen_int = 1;
 634         wl->bss_type = MAX_BSS_TYPE;
 635         wl->band = IEEE80211_BAND_2GHZ;
 636
 637         wl->rx_counter = 0;
 638         wl->elp = false;
 639         wl->psm = 0;
 640         wl->tx_queue_stopped = false;
 641         wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
 642         wl->tx_blocks_available = 0;
 643         wl->tx_results_count = 0;
 644         wl->tx_packets_count = 0;
 645         wl->tx_security_last_seq = 0;
 646         wl->tx_security_seq_16 = 0;
 647         wl->tx_security_seq_32 = 0;
 648         wl->time_offset = 0;
 649         wl->session_counter = 0;
 650         for (i = 0; i < NUM_TX_QUEUES; i++)
 651                 wl->tx_blocks_freed[i] = 0;
 652
 653         wl1271_debugfs_reset(wl);
 654         mutex_unlock(&wl->mutex);
 655 }
 656
 657 static int wl1271_op_add_interface(struct ieee80211_hw *hw,
 658                                    struct ieee80211_if_init_conf *conf)
 659 {
 660         struct wl1271 *wl = hw->priv;
 661         int ret = 0;
 662
 663         wl1271_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
 664                      conf->type, conf->mac_addr);
 665
 666         mutex_lock(&wl->mutex);
 667
 668         switch (conf->type) {
 669         case NL80211_IFTYPE_STATION:
 670                 wl->bss_type = BSS_TYPE_STA_BSS;
 671                 break;
 672         case NL80211_IFTYPE_ADHOC:
 673                 wl->bss_type = BSS_TYPE_IBSS;
 674                 break;
 675         default:
 676                 ret = -EOPNOTSUPP;
 677                 goto out;
 678         }
 679
 680         /* FIXME: what if conf->mac_addr changes? */
 681
 682 out:
 683         mutex_unlock(&wl->mutex);
 684         return ret;
 685 }
 686
 687 static void wl1271_op_remove_interface(struct ieee80211_hw *hw,
 688                                          struct ieee80211_if_init_conf *conf)
 689 {
 690         wl1271_debug(DEBUG_MAC80211, "mac80211 remove interface");
 691 }
 692
 693 #if 0
 694 static int wl1271_op_config_interface(struct ieee80211_hw *hw,
 695                                       struct ieee80211_vif *vif,
 696                                       struct ieee80211_if_conf *conf)
 697 {
 698         struct wl1271 *wl = hw->priv;
 699         struct sk_buff *beacon;
 700         int ret;
 701
 702         wl1271_debug(DEBUG_MAC80211, "mac80211 config_interface bssid %pM",
 703                      conf->bssid);
 704         wl1271_dump_ascii(DEBUG_MAC80211, "ssid: ", conf->ssid,
 705                           conf->ssid_len);
 706
 707         mutex_lock(&wl->mutex);
 708
 709         ret = wl1271_ps_elp_wakeup(wl, false);
 710         if (ret < 0)
 711                 goto out;
 712
 713         memcpy(wl->bssid, conf->bssid, ETH_ALEN);
 714
 715         ret = wl1271_cmd_build_null_data(wl);
 716         if (ret < 0)
 717                 goto out_sleep;
 718
 719         wl->ssid_len = conf->ssid_len;
 720         if (wl->ssid_len)
 721                 memcpy(wl->ssid, conf->ssid, wl->ssid_len);
 722
 723         if (wl->bss_type != BSS_TYPE_IBSS) {
 724                 ret = wl1271_cmd_join(wl);
 725                 if (ret < 0)
 726                         goto out_sleep;
 727         }
 728
 729         if (conf->changed & IEEE80211_IFCC_BEACON) {
 730                 beacon = ieee80211_beacon_get(hw, vif);
 731                 ret = wl1271_cmd_template_set(wl, CMD_TEMPL_BEACON,
 732                                               beacon->data, beacon->len);
 733
 734                 if (ret < 0) {
 735                         dev_kfree_skb(beacon);
 736                         goto out_sleep;
 737                 }
 738
 739                 ret = wl1271_cmd_template_set(wl, CMD_TEMPL_PROBE_RESPONSE,
 740                                               beacon->data, beacon->len);
 741
 742                 dev_kfree_skb(beacon);
 743
 744                 if (ret < 0)
 745                         goto out_sleep;
 746
 747                 ret = wl1271_cmd_join(wl);
 748
 749                 if (ret < 0)
 750                         goto out_sleep;
 751         }
 752
 753 out_sleep:
 754         wl1271_ps_elp_sleep(wl);
 755
 756 out:
 757         mutex_unlock(&wl->mutex);
 758
 759         return ret;
 760 }
 761 #endif
 762
 763 static int wl1271_op_config(struct ieee80211_hw *hw, u32 changed)
 764 {
 765         struct wl1271 *wl = hw->priv;
 766         struct ieee80211_conf *conf = &hw->conf;
 767         int channel, ret = 0;
 768
 769         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
 770
 771         wl1271_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
 772                      channel,
 773                      conf->flags & IEEE80211_CONF_PS ? "on" : "off",
 774                      conf->power_level);
 775
 776         mutex_lock(&wl->mutex);
 777
 778         wl->band = conf->channel->band;
 779
 780         ret = wl1271_ps_elp_wakeup(wl, false);
 781         if (ret < 0)
 782                 goto out;
 783
 784         if (channel != wl->channel) {
 785                 u8 old_channel = wl->channel;
 786                 wl->channel = channel;
 787
 788                 ret = wl1271_cmd_join(wl);
 789                 if (ret < 0) {
 790                         wl->channel = old_channel;
 791                         goto out_sleep;
 792                 }
 793         }
 794
 795         ret = wl1271_cmd_build_null_data(wl);
 796         if (ret < 0)
 797                 goto out_sleep;
 798
 799         if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
 800                 wl1271_info("psm enabled");
 801
 802                 wl->psm_requested = true;
 803
 804                 /*
 805                  * We enter PSM only if we're already associated.
 806                  * If we're not, we'll enter it when joining an SSID,
 807                  * through the bss_info_changed() hook.
 808                  */
 809                 ret = wl1271_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
 810         } else if (!(conf->flags & IEEE80211_CONF_PS) &&
 811                    wl->psm_requested) {
 812                 wl1271_info("psm disabled");
 813
 814                 wl->psm_requested = false;
 815
 816                 if (wl->psm)
 817                         ret = wl1271_ps_set_mode(wl, STATION_ACTIVE_MODE);
 818         }
 819
 820         if (conf->power_level != wl->power_level) {
 821                 ret = wl1271_acx_tx_power(wl, conf->power_level);
 822                 if (ret < 0)
 823                         goto out;
 824
 825                 wl->power_level = conf->power_level;
 826         }
 827
 828 out_sleep:
 829         wl1271_ps_elp_sleep(wl);
 830
 831 out:
 832         mutex_unlock(&wl->mutex);
 833
 834         return ret;
 835 }
 836
 837 static u64 wl1271_op_prepare_multicast(struct ieee80211_hw *hw, int mc_count,
 838                                        struct dev_addr_list *mc_list)
 839 {
 840         struct wl1271 *wl = hw->priv;
 841         struct wl1271_filter_params *fp;
 842         unsigned long flags;
 843         int i;
 844
 845         /*
 846          * FIXME: we should return a hash that will be passed to
 847          * configure_filter() instead of saving everything in the context.
 848          */
 849
 850         fp = kzalloc(sizeof(*fp), GFP_KERNEL);
 851         if (!fp) {
 852                 wl1271_error("Out of memory setting filters.");
 853                 return 0;
 854         }
 855
 856         /* update multicast filtering parameters */
 857         if (mc_count > ACX_MC_ADDRESS_GROUP_MAX) {
 858                 mc_count = 0;
 859                 fp->filters |= FIF_ALLMULTI;
 860         }
 861
 862         fp->mc_list_length = 0;
 863         for (i = 0; i < mc_count; i++) {
 864                 if (mc_list->da_addrlen == ETH_ALEN) {
 865                         memcpy(fp->mc_list[fp->mc_list_length],
 866                                mc_list->da_addr, ETH_ALEN);
 867                         fp->mc_list_length++;
 868                 } else
 869                         wl1271_warning("Unknown mc address length.");
 870         }
 871
 872         spin_lock_irqsave(&wl->wl_lock, flags);
 873         kfree(wl->filter_params);
 874         wl->filter_params = fp;
 875         spin_unlock_irqrestore(&wl->wl_lock, flags);
 876
 877         return 1;
 878 }
 879
 880 static void wl1271_op_configure_filter(struct ieee80211_hw *hw,
 881                                        unsigned int changed,
 882                                        unsigned int *total, u64 multicast)
 883 {
 884         struct wl1271 *wl = hw->priv;
 885
 886         wl1271_debug(DEBUG_MAC80211, "mac80211 configure filter");
 887
 888         *total &= WL1271_SUPPORTED_FILTERS;
 889         changed &= WL1271_SUPPORTED_FILTERS;
 890
 891         if (!multicast)
 892                 return;
 893
 894         /*
 895          * FIXME: for now we are still using a workqueue for filter
 896          * configuration, but with the new mac80211, this is not needed,
 897          * since configure_filter can now sleep.  We now have
 898          * prepare_multicast, which needs to be atomic instead.
 899          */
 900
 901         /* store current filter config */
 902         wl->filter_params->filters = *total;
 903         wl->filter_params->changed = changed;
 904
 905         ieee80211_queue_work(wl->hw, &wl->filter_work);
 906 }
 907
 908 static int wl1271_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 909                              struct ieee80211_vif *vif,
 910                              struct ieee80211_sta *sta,
 911                              struct ieee80211_key_conf *key_conf)
 912 {
 913         struct wl1271 *wl = hw->priv;
 914         const u8 *addr;
 915         int ret;
 916         u32 tx_seq_32 = 0;
 917         u16 tx_seq_16 = 0;
 918         u8 key_type;
 919
 920         static const u8 bcast_addr[ETH_ALEN] =
 921                 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 922
 923         wl1271_debug(DEBUG_MAC80211, "mac80211 set key");
 924
 925         addr = sta ? sta->addr : bcast_addr;
 926
 927         wl1271_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
 928         wl1271_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
 929         wl1271_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
 930                      key_conf->alg, key_conf->keyidx,
 931                      key_conf->keylen, key_conf->flags);
 932         wl1271_dump(DEBUG_CRYPT, "KEY: ", key_conf->key, key_conf->keylen);
 933
 934         if (is_zero_ether_addr(addr)) {
 935                 /* We dont support TX only encryption */
 936                 ret = -EOPNOTSUPP;
 937                 goto out;
 938         }
 939
 940         mutex_lock(&wl->mutex);
 941
 942         ret = wl1271_ps_elp_wakeup(wl, false);
 943         if (ret < 0)
 944                 goto out_unlock;
 945
 946         switch (key_conf->alg) {
 947         case ALG_WEP:
 948                 key_type = KEY_WEP;
 949
 950                 key_conf->hw_key_idx = key_conf->keyidx;
 951                 break;
 952         case ALG_TKIP:
 953                 key_type = KEY_TKIP;
 954
 955                 key_conf->hw_key_idx = key_conf->keyidx;
 956                 tx_seq_32 = wl->tx_security_seq_32;
 957                 tx_seq_16 = wl->tx_security_seq_16;
 958                 break;
 959         case ALG_CCMP:
 960                 key_type = KEY_AES;
 961
 962                 key_conf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
 963                 tx_seq_32 = wl->tx_security_seq_32;
 964                 tx_seq_16 = wl->tx_security_seq_16;
 965                 break;
 966         default:
 967                 wl1271_error("Unknown key algo 0x%x", key_conf->alg);
 968
 969                 ret = -EOPNOTSUPP;
 970                 goto out_sleep;
 971         }
 972
 973         switch (cmd) {
 974         case SET_KEY:
 975                 ret = wl1271_cmd_set_key(wl, KEY_ADD_OR_REPLACE,
 976                                          key_conf->keyidx, key_type,
 977                                          key_conf->keylen, key_conf->key,
 978                                          addr, tx_seq_32, tx_seq_16);
 979                 if (ret < 0) {
 980                         wl1271_error("Could not add or replace key");
 981                         goto out_sleep;
 982                 }
 983                 break;
 984
 985         case DISABLE_KEY:
 986                 ret = wl1271_cmd_set_key(wl, KEY_REMOVE,
 987                                          key_conf->keyidx, key_type,
 988                                          key_conf->keylen, key_conf->key,
 989                                          addr, 0, 0);
 990                 if (ret < 0) {
 991                         wl1271_error("Could not remove key");
 992                         goto out_sleep;
 993                 }
 994                 break;
 995
 996         default:
 997                 wl1271_error("Unsupported key cmd 0x%x", cmd);
 998                 ret = -EOPNOTSUPP;
 999                 goto out_sleep;
1000
1001                 break;
1002         }
1003
1004 out_sleep:
1005         wl1271_ps_elp_sleep(wl);
1006
1007 out_unlock:
1008         mutex_unlock(&wl->mutex);
1009
1010 out:
1011         return ret;
1012 }
1013
1014 static int wl1271_op_hw_scan(struct ieee80211_hw *hw,
1015                              struct cfg80211_scan_request *req)
1016 {
1017         struct wl1271 *wl = hw->priv;
1018         int ret;
1019         u8 *ssid = NULL;
1020         size_t ssid_len = 0;
1021
1022         wl1271_debug(DEBUG_MAC80211, "mac80211 hw scan");
1023
1024         if (req->n_ssids) {
1025                 ssid = req->ssids[0].ssid;
1026                 ssid_len = req->ssids[0].ssid_len;
1027         }
1028
1029         mutex_lock(&wl->mutex);
1030
1031         ret = wl1271_ps_elp_wakeup(wl, false);
1032         if (ret < 0)
1033                 goto out;
1034
1035         ret = wl1271_cmd_scan(hw->priv, ssid, ssid_len, 1, 0, 13, 3);
1036
1037         wl1271_ps_elp_sleep(wl);
1038
1039 out:
1040         mutex_unlock(&wl->mutex);
1041
1042         return ret;
1043 }
1044
1045 static int wl1271_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1046 {
1047         struct wl1271 *wl = hw->priv;
1048         int ret;
1049
1050         mutex_lock(&wl->mutex);
1051
1052         ret = wl1271_ps_elp_wakeup(wl, false);
1053         if (ret < 0)
1054                 goto out;
1055
1056         ret = wl1271_acx_rts_threshold(wl, (u16) value);
1057         if (ret < 0)
1058                 wl1271_warning("wl1271_op_set_rts_threshold failed: %d", ret);
1059
1060         wl1271_ps_elp_sleep(wl);
1061
1062 out:
1063         mutex_unlock(&wl->mutex);
1064
1065         return ret;
1066 }
1067
1068 static u32 wl1271_enabled_rates_get(struct wl1271 *wl, u64 basic_rate_set)
1069 {
1070         struct ieee80211_supported_band *band;
1071         u32 enabled_rates = 0;
1072         int bit;
1073
1074         band = wl->hw->wiphy->bands[wl->band];
1075         for (bit = 0; bit < band->n_bitrates; bit++) {
1076                 if (basic_rate_set & 0x1)
1077                         enabled_rates |= band->bitrates[bit].hw_value;
1078                 basic_rate_set >>= 1;
1079         }
1080
1081         return enabled_rates;
1082 }
1083
1084 static void wl1271_op_bss_info_changed(struct ieee80211_hw *hw,
1085                                        struct ieee80211_vif *vif,
1086                                        struct ieee80211_bss_conf *bss_conf,
1087                                        u32 changed)
1088 {
1089         enum wl1271_cmd_ps_mode mode;
1090         struct wl1271 *wl = hw->priv;
1091         int ret;
1092
1093         wl1271_debug(DEBUG_MAC80211, "mac80211 bss info changed");
1094
1095         mutex_lock(&wl->mutex);
1096
1097         ret = wl1271_ps_elp_wakeup(wl, false);
1098         if (ret < 0)
1099                 goto out;
1100
1101         if (changed & BSS_CHANGED_ASSOC) {
1102                 if (bss_conf->assoc) {
1103                         wl->beacon_int = bss_conf->beacon_int;
1104                         wl->dtim_period = bss_conf->dtim_period;
1105                         wl->aid = bss_conf->aid;
1106
1107                         ret = wl1271_cmd_join(wl);
1108                         if (ret < 0) {
1109                                 wl1271_warning("Association configuration "
1110                                                "failed %d", ret);
1111                                 goto out_sleep;
1112                         }
1113
1114                         ret = wl1271_cmd_build_ps_poll(wl, wl->aid);
1115                         if (ret < 0)
1116                                 goto out_sleep;
1117
1118                         ret = wl1271_acx_aid(wl, wl->aid);
1119                         if (ret < 0)
1120                                 goto out_sleep;
1121
1122                         /* If we want to go in PSM but we're not there yet */
1123                         if (wl->psm_requested && !wl->psm) {
1124                                 mode = STATION_POWER_SAVE_MODE;
1125                                 ret = wl1271_ps_set_mode(wl, mode);
1126                                 if (ret < 0)
1127                                         goto out_sleep;
1128                         }
1129                 } else {
1130                         /* use defaults when not associated */
1131                         wl->beacon_int = WL1271_DEFAULT_BEACON_INT;
1132                         wl->dtim_period = WL1271_DEFAULT_DTIM_PERIOD;
1133                         wl->basic_rate_set = WL1271_DEFAULT_BASIC_RATE_SET;
1134                         wl->aid = 0;
1135                 }
1136
1137         }
1138
1139         if (changed & BSS_CHANGED_ERP_SLOT) {
1140                 if (bss_conf->use_short_slot)
1141                         ret = wl1271_acx_slot(wl, SLOT_TIME_SHORT);
1142                 else
1143                         ret = wl1271_acx_slot(wl, SLOT_TIME_LONG);
1144                 if (ret < 0) {
1145                         wl1271_warning("Set slot time failed %d", ret);
1146                         goto out_sleep;
1147                 }
1148         }
1149
1150         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1151                 if (bss_conf->use_short_preamble)
1152                         wl1271_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1153                 else
1154                         wl1271_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1155         }
1156
1157         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1158                 if (bss_conf->use_cts_prot)
1159                         ret = wl1271_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1160                 else
1161                         ret = wl1271_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1162                 if (ret < 0) {
1163                         wl1271_warning("Set ctsprotect failed %d", ret);
1164                         goto out_sleep;
1165                 }
1166         }
1167
1168         if (changed & BSS_CHANGED_BASIC_RATES) {
1169                 wl->basic_rate_set = wl1271_enabled_rates_get(
1170                         wl, bss_conf->basic_rates);
1171                 ret = wl1271_acx_rate_policies(wl, wl->basic_rate_set);
1172
1173                 if (ret < 0) {
1174                         wl1271_warning("Set rate policies failed %d", ret);
1175                         goto out_sleep;
1176                 }
1177                 ret = wl1271_cmd_join(wl);
1178                 if (ret < 0) {
1179                         wl1271_warning("Join with new basic rate "
1180                                        "set failed %d", ret);
1181                         goto out_sleep;
1182                 }
1183         }
1184
1185 out_sleep:
1186         wl1271_ps_elp_sleep(wl);
1187
1188 out:
1189         mutex_unlock(&wl->mutex);
1190 }
1191
1192
1193 /* can't be const, mac80211 writes to this */
1194 static struct ieee80211_rate wl1271_rates[] = {
1195         { .bitrate = 10,
1196           .hw_value = 0x1,
1197           .hw_value_short = 0x1, },
1198         { .bitrate = 20,
1199           .hw_value = 0x2,
1200           .hw_value_short = 0x2,
1201           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1202         { .bitrate = 55,
1203           .hw_value = 0x4,
1204           .hw_value_short = 0x4,
1205           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1206         { .bitrate = 110,
1207           .hw_value = 0x20,
1208           .hw_value_short = 0x20,
1209           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1210         { .bitrate = 60,
1211           .hw_value = 0x8,
1212           .hw_value_short = 0x8, },
1213         { .bitrate = 90,
1214           .hw_value = 0x10,
1215           .hw_value_short = 0x10, },
1216         { .bitrate = 120,
1217           .hw_value = 0x40,
1218           .hw_value_short = 0x40, },
1219         { .bitrate = 180,
1220           .hw_value = 0x80,
1221           .hw_value_short = 0x80, },
1222         { .bitrate = 240,
1223           .hw_value = 0x200,
1224           .hw_value_short = 0x200, },
1225         { .bitrate = 360,
1226          .hw_value = 0x400,
1227          .hw_value_short = 0x400, },
1228         { .bitrate = 480,
1229           .hw_value = 0x800,
1230           .hw_value_short = 0x800, },
1231         { .bitrate = 540,
1232           .hw_value = 0x1000,
1233           .hw_value_short = 0x1000, },
1234 };
1235
1236 /* can't be const, mac80211 writes to this */
1237 static struct ieee80211_channel wl1271_channels[] = {
1238         { .hw_value = 1, .center_freq = 2412},
1239         { .hw_value = 2, .center_freq = 2417},
1240         { .hw_value = 3, .center_freq = 2422},
1241         { .hw_value = 4, .center_freq = 2427},
1242         { .hw_value = 5, .center_freq = 2432},
1243         { .hw_value = 6, .center_freq = 2437},
1244         { .hw_value = 7, .center_freq = 2442},
1245         { .hw_value = 8, .center_freq = 2447},
1246         { .hw_value = 9, .center_freq = 2452},
1247         { .hw_value = 10, .center_freq = 2457},
1248         { .hw_value = 11, .center_freq = 2462},
1249         { .hw_value = 12, .center_freq = 2467},
1250         { .hw_value = 13, .center_freq = 2472},
1251 };
1252
1253 /* can't be const, mac80211 writes to this */
1254 static struct ieee80211_supported_band wl1271_band_2ghz = {
1255         .channels = wl1271_channels,
1256         .n_channels = ARRAY_SIZE(wl1271_channels),
1257         .bitrates = wl1271_rates,
1258         .n_bitrates = ARRAY_SIZE(wl1271_rates),
1259 };
1260
1261 static const struct ieee80211_ops wl1271_ops = {
1262         .start = wl1271_op_start,
1263         .stop = wl1271_op_stop,
1264         .add_interface = wl1271_op_add_interface,
1265         .remove_interface = wl1271_op_remove_interface,
1266         .config = wl1271_op_config,
1267 /*      .config_interface = wl1271_op_config_interface, */
1268         .prepare_multicast = wl1271_op_prepare_multicast,
1269         .configure_filter = wl1271_op_configure_filter,
1270         .tx = wl1271_op_tx,
1271         .set_key = wl1271_op_set_key,
1272         .hw_scan = wl1271_op_hw_scan,
1273         .bss_info_changed = wl1271_op_bss_info_changed,
1274         .set_rts_threshold = wl1271_op_set_rts_threshold,
1275 };
1276
1277 static int wl1271_register_hw(struct wl1271 *wl)
1278 {
1279         int ret;
1280
1281         if (wl->mac80211_registered)
1282                 return 0;
1283
1284         SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1285
1286         ret = ieee80211_register_hw(wl->hw);
1287         if (ret < 0) {
1288                 wl1271_error("unable to register mac80211 hw: %d", ret);
1289                 return ret;
1290         }
1291
1292         wl->mac80211_registered = true;
1293
1294         wl1271_notice("loaded");
1295
1296         return 0;
1297 }
1298
1299 static int wl1271_init_ieee80211(struct wl1271 *wl)
1300 {
1301         /* The tx descriptor buffer and the TKIP space. */
1302         wl->hw->extra_tx_headroom = WL1271_TKIP_IV_SPACE +
1303                 sizeof(struct wl1271_tx_hw_descr);
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
1312         wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1313         wl->hw->wiphy->max_scan_ssids = 1;
1314         wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1271_band_2ghz;
1315
1316         SET_IEEE80211_DEV(wl->hw, &wl->spi->dev);
1317
1318         return 0;
1319 }
1320
1321 static void wl1271_device_release(struct device *dev)
1322 {
1323
1324 }
1325
1326 static struct platform_device wl1271_device = {
1327         .name           = "wl1271",
1328         .id             = -1,
1329
1330         /* device model insists to have a release function */
1331         .dev            = {
1332                 .release = wl1271_device_release,
1333         },
1334 };
1335
1336 #define WL1271_DEFAULT_CHANNEL 0
1337 static int __devinit wl1271_probe(struct spi_device *spi)
1338 {
1339         struct wl12xx_platform_data *pdata;
1340         struct ieee80211_hw *hw;
1341         struct wl1271 *wl;
1342         int ret, i;
1343         static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1344
1345         pdata = spi->dev.platform_data;
1346         if (!pdata) {
1347                 wl1271_error("no platform data");
1348                 return -ENODEV;
1349         }
1350
1351         hw = ieee80211_alloc_hw(sizeof(*wl), &wl1271_ops);
1352         if (!hw) {
1353                 wl1271_error("could not alloc ieee80211_hw");
1354                 return -ENOMEM;
1355         }
1356
1357         wl = hw->priv;
1358         memset(wl, 0, sizeof(*wl));
1359
1360         wl->hw = hw;
1361         dev_set_drvdata(&spi->dev, wl);
1362         wl->spi = spi;
1363
1364         skb_queue_head_init(&wl->tx_queue);
1365
1366         INIT_WORK(&wl->filter_work, wl1271_filter_work);
1367         INIT_DELAYED_WORK(&wl->elp_work, wl1271_elp_work);
1368         wl->channel = WL1271_DEFAULT_CHANNEL;
1369         wl->scanning = false;
1370         wl->default_key = 0;
1371         wl->listen_int = 1;
1372         wl->rx_counter = 0;
1373         wl->rx_config = WL1271_DEFAULT_RX_CONFIG;
1374         wl->rx_filter = WL1271_DEFAULT_RX_FILTER;
1375         wl->elp = false;
1376         wl->psm = 0;
1377         wl->psm_requested = false;
1378         wl->tx_queue_stopped = false;
1379         wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
1380         wl->beacon_int = WL1271_DEFAULT_BEACON_INT;
1381         wl->dtim_period = WL1271_DEFAULT_DTIM_PERIOD;
1382         wl->basic_rate_set = WL1271_DEFAULT_BASIC_RATE_SET;
1383         wl->band = IEEE80211_BAND_2GHZ;
1384
1385         for (i = 0; i < ACX_TX_DESCRIPTORS; i++)
1386                 wl->tx_frames[i] = NULL;
1387
1388         spin_lock_init(&wl->wl_lock);
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 = WL1271_STATE_OFF;
1398         mutex_init(&wl->mutex);
1399
1400         wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1401         if (!wl->rx_descriptor) {
1402                 wl1271_error("could not allocate memory for rx descriptor");
1403                 ret = -ENOMEM;
1404                 goto out_free;
1405         }
1406
1407         /* This is the only SPI value that we need to set here, the rest
1408          * comes from the board-peripherals file */
1409         spi->bits_per_word = 32;
1410
1411         ret = spi_setup(spi);
1412         if (ret < 0) {
1413                 wl1271_error("spi_setup failed");
1414                 goto out_free;
1415         }
1416
1417         wl->set_power = pdata->set_power;
1418         if (!wl->set_power) {
1419                 wl1271_error("set power function missing in platform data");
1420                 ret = -ENODEV;
1421                 goto out_free;
1422         }
1423
1424         wl->irq = spi->irq;
1425         if (wl->irq < 0) {
1426                 wl1271_error("irq missing in platform data");
1427                 ret = -ENODEV;
1428                 goto out_free;
1429         }
1430
1431         ret = request_irq(wl->irq, wl1271_irq, 0, DRIVER_NAME, wl);
1432         if (ret < 0) {
1433                 wl1271_error("request_irq() failed: %d", ret);
1434                 goto out_free;
1435         }
1436
1437         set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING);
1438
1439         disable_irq(wl->irq);
1440
1441         ret = platform_device_register(&wl1271_device);
1442         if (ret) {
1443                 wl1271_error("couldn't register platform device");
1444                 goto out_irq;
1445         }
1446         dev_set_drvdata(&wl1271_device.dev, wl);
1447
1448         ret = wl1271_init_ieee80211(wl);
1449         if (ret)
1450                 goto out_platform;
1451
1452         ret = wl1271_register_hw(wl);
1453         if (ret)
1454                 goto out_platform;
1455
1456         wl1271_debugfs_init(wl);
1457
1458         wl1271_notice("initialized");
1459
1460         return 0;
1461
1462  out_platform:
1463         platform_device_unregister(&wl1271_device);
1464
1465  out_irq:
1466         free_irq(wl->irq, wl);
1467
1468  out_free:
1469         kfree(wl->rx_descriptor);
1470         wl->rx_descriptor = NULL;
1471
1472         ieee80211_free_hw(hw);
1473
1474         return ret;
1475 }
1476
1477 static int __devexit wl1271_remove(struct spi_device *spi)
1478 {
1479         struct wl1271 *wl = dev_get_drvdata(&spi->dev);
1480
1481         ieee80211_unregister_hw(wl->hw);
1482
1483         wl1271_debugfs_exit(wl);
1484         platform_device_unregister(&wl1271_device);
1485         free_irq(wl->irq, wl);
1486         kfree(wl->target_mem_map);
1487         kfree(wl->fw);
1488         wl->fw = NULL;
1489         kfree(wl->nvs);
1490         wl->nvs = NULL;
1491
1492         kfree(wl->rx_descriptor);
1493         wl->rx_descriptor = NULL;
1494
1495         kfree(wl->fw_status);
1496         kfree(wl->tx_res_if);
1497
1498         ieee80211_free_hw(wl->hw);
1499
1500         return 0;
1501 }
1502
1503
1504 static struct spi_driver wl1271_spi_driver = {
1505         .driver = {
1506                 .name           = "wl1271",
1507                 .bus            = &spi_bus_type,
1508                 .owner          = THIS_MODULE,
1509         },
1510
1511         .probe          = wl1271_probe,
1512         .remove         = __devexit_p(wl1271_remove),
1513 };
1514
1515 static int __init wl1271_init(void)
1516 {
1517         int ret;
1518
1519         ret = spi_register_driver(&wl1271_spi_driver);
1520         if (ret < 0) {
1521                 wl1271_error("failed to register spi driver: %d", ret);
1522                 goto out;
1523         }
1524
1525 out:
1526         return ret;
1527 }
1528
1529 static void __exit wl1271_exit(void)
1530 {
1531         spi_unregister_driver(&wl1271_spi_driver);
1532
1533         wl1271_notice("unloaded");
1534 }
1535
1536 module_init(wl1271_init);
1537 module_exit(wl1271_exit);
1538
1539 MODULE_LICENSE("GPL");
1540 MODULE_AUTHOR("Luciano Coelho <luciano.coelho@nokia.com>");
1541 MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");