drivers/net/wireless/wl12xx/main.c

   1 /*
   2  * This file is part of wl12xx
   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/spi/spi.h>
  30 #include <linux/crc32.h>
  31 #include <linux/etherdevice.h>
  32 #include <linux/spi/wl12xx.h>
  33
  34 #include "wl12xx.h"
  35 #include "wl12xx_80211.h"
  36 #include "reg.h"
  37 #include "wl1251.h"
  38 #include "spi.h"
  39 #include "event.h"
  40 #include "tx.h"
  41 #include "rx.h"
  42 #include "ps.h"
  43 #include "init.h"
  44 #include "debugfs.h"
  45
  46 static void wl12xx_disable_interrupts(struct wl12xx *wl)
  47 {
  48         disable_irq(wl->irq);
  49 }
  50
  51 static void wl12xx_power_off(struct wl12xx *wl)
  52 {
  53         wl->set_power(false);
  54 }
  55
  56 static void wl12xx_power_on(struct wl12xx *wl)
  57 {
  58         wl->set_power(true);
  59 }
  60
  61 static irqreturn_t wl12xx_irq(int irq, void *cookie)
  62 {
  63         struct wl12xx *wl;
  64
  65         wl12xx_debug(DEBUG_IRQ, "IRQ");
  66
  67         wl = cookie;
  68
  69         schedule_work(&wl->irq_work);
  70
  71         return IRQ_HANDLED;
  72 }
  73
  74 static int wl12xx_fetch_firmware(struct wl12xx *wl)
  75 {
  76         const struct firmware *fw;
  77         int ret;
  78
  79         ret = request_firmware(&fw, wl->chip.fw_filename, &wl->spi->dev);
  80
  81         if (ret < 0) {
  82                 wl12xx_error("could not get firmware: %d", ret);
  83                 return ret;
  84         }
  85
  86         if (fw->size % 4) {
  87                 wl12xx_error("firmware size is not multiple of 32 bits: %zu",
  88                              fw->size);
  89                 ret = -EILSEQ;
  90                 goto out;
  91         }
  92
  93         wl->fw_len = fw->size;
  94         wl->fw = kmalloc(wl->fw_len, GFP_KERNEL);
  95
  96         if (!wl->fw) {
  97                 wl12xx_error("could not allocate memory for the firmware");
  98                 ret = -ENOMEM;
  99                 goto out;
 100         }
 101
 102         memcpy(wl->fw, fw->data, wl->fw_len);
 103
 104         ret = 0;
 105
 106 out:
 107         release_firmware(fw);
 108
 109         return ret;
 110 }
 111
 112 static int wl12xx_fetch_nvs(struct wl12xx *wl)
 113 {
 114         const struct firmware *fw;
 115         int ret;
 116
 117         ret = request_firmware(&fw, wl->chip.nvs_filename, &wl->spi->dev);
 118
 119         if (ret < 0) {
 120                 wl12xx_error("could not get nvs file: %d", ret);
 121                 return ret;
 122         }
 123
 124         if (fw->size % 4) {
 125                 wl12xx_error("nvs size is not multiple of 32 bits: %zu",
 126                              fw->size);
 127                 ret = -EILSEQ;
 128                 goto out;
 129         }
 130
 131         wl->nvs_len = fw->size;
 132         wl->nvs = kmalloc(wl->nvs_len, GFP_KERNEL);
 133
 134         if (!wl->nvs) {
 135                 wl12xx_error("could not allocate memory for the nvs file");
 136                 ret = -ENOMEM;
 137                 goto out;
 138         }
 139
 140         memcpy(wl->nvs, fw->data, wl->nvs_len);
 141
 142         ret = 0;
 143
 144 out:
 145         release_firmware(fw);
 146
 147         return ret;
 148 }
 149
 150 static void wl12xx_fw_wakeup(struct wl12xx *wl)
 151 {
 152         u32 elp_reg;
 153
 154         elp_reg = ELPCTRL_WAKE_UP;
 155         wl12xx_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
 156         elp_reg = wl12xx_read32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR);
 157
 158         if (!(elp_reg & ELPCTRL_WLAN_READY)) {
 159                 wl12xx_warning("WLAN not ready");
 160                 elp_reg = ELPCTRL_WAKE_UP_WLAN_READY;
 161                 wl12xx_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
 162         }
 163 }
 164
 165 static int wl12xx_chip_wakeup(struct wl12xx *wl)
 166 {
 167         int ret = 0;
 168
 169         wl12xx_power_on(wl);
 170         msleep(wl->chip.power_on_sleep);
 171         wl12xx_spi_reset(wl);
 172         wl12xx_spi_init(wl);
 173
 174         /* We don't need a real memory partition here, because we only want
 175          * to use the registers at this point. */
 176         wl12xx_set_partition(wl,
 177                              0x00000000,
 178                              0x00000000,
 179                              REGISTERS_BASE,
 180                              REGISTERS_DOWN_SIZE);
 181
 182         /* ELP module wake up */
 183         wl12xx_fw_wakeup(wl);
 184
 185         /* whal_FwCtrl_BootSm() */
 186
 187         /* 0. read chip id from CHIP_ID */
 188         wl->chip.id = wl12xx_reg_read32(wl, CHIP_ID_B);
 189
 190         /* 1. check if chip id is valid */
 191
 192         switch (wl->chip.id) {
 193         case CHIP_ID_1251_PG12:
 194                 wl12xx_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG12)",
 195                              wl->chip.id);
 196
 197                 wl1251_setup(wl);
 198
 199                 break;
 200         case CHIP_ID_1271_PG10:
 201         case CHIP_ID_1251_PG10:
 202         case CHIP_ID_1251_PG11:
 203         default:
 204                 wl12xx_error("unsupported chip id: 0x%x", wl->chip.id);
 205                 ret = -ENODEV;
 206                 goto out;
 207         }
 208
 209         if (wl->fw == NULL) {
 210                 ret = wl12xx_fetch_firmware(wl);
 211                 if (ret < 0)
 212                         goto out;
 213         }
 214
 215         /* No NVS from netlink, try to get it from the filesystem */
 216         if (wl->nvs == NULL) {
 217                 ret = wl12xx_fetch_nvs(wl);
 218                 if (ret < 0)
 219                         goto out;
 220         }
 221
 222 out:
 223         return ret;
 224 }
 225
 226 static void wl12xx_filter_work(struct work_struct *work)
 227 {
 228         struct wl12xx *wl =
 229                 container_of(work, struct wl12xx, filter_work);
 230         int ret;
 231
 232         mutex_lock(&wl->mutex);
 233
 234         if (wl->state == WL12XX_STATE_OFF)
 235                 goto out;
 236
 237         ret = wl12xx_cmd_join(wl, wl->bss_type, 1, 100, 0);
 238         if (ret < 0)
 239                 goto out;
 240
 241 out:
 242         mutex_unlock(&wl->mutex);
 243 }
 244
 245 int wl12xx_plt_start(struct wl12xx *wl)
 246 {
 247         int ret;
 248
 249         wl12xx_notice("power up");
 250
 251         if (wl->state != WL12XX_STATE_OFF) {
 252                 wl12xx_error("cannot go into PLT state because not "
 253                              "in off state: %d", wl->state);
 254                 return -EBUSY;
 255         }
 256
 257         wl->state = WL12XX_STATE_PLT;
 258
 259         ret = wl12xx_chip_wakeup(wl);
 260         if (ret < 0)
 261                 return ret;
 262
 263         ret = wl->chip.op_boot(wl);
 264         if (ret < 0)
 265                 return ret;
 266
 267         wl12xx_notice("firmware booted in PLT mode (%s)", wl->chip.fw_ver);
 268
 269         ret = wl->chip.op_plt_init(wl);
 270         if (ret < 0)
 271                 return ret;
 272
 273         return 0;
 274 }
 275
 276 int wl12xx_plt_stop(struct wl12xx *wl)
 277 {
 278         wl12xx_notice("power down");
 279
 280         if (wl->state != WL12XX_STATE_PLT) {
 281                 wl12xx_error("cannot power down because not in PLT "
 282                              "state: %d", wl->state);
 283                 return -EBUSY;
 284         }
 285
 286         wl12xx_disable_interrupts(wl);
 287         wl12xx_power_off(wl);
 288
 289         wl->state = WL12XX_STATE_OFF;
 290
 291         return 0;
 292 }
 293
 294
 295 static int wl12xx_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 296 {
 297         struct wl12xx *wl = hw->priv;
 298
 299         skb_queue_tail(&wl->tx_queue, skb);
 300
 301         schedule_work(&wl->tx_work);
 302
 303         /*
 304          * The workqueue is slow to process the tx_queue and we need stop
 305          * the queue here, otherwise the queue will get too long.
 306          */
 307         if (skb_queue_len(&wl->tx_queue) >= WL12XX_TX_QUEUE_MAX_LENGTH) {
 308                 ieee80211_stop_queues(wl->hw);
 309
 310                 /*
 311                  * FIXME: this is racy, the variable is not properly
 312                  * protected. Maybe fix this by removing the stupid
 313                  * variable altogether and checking the real queue state?
 314                  */
 315                 wl->tx_queue_stopped = true;
 316         }
 317
 318         return NETDEV_TX_OK;
 319 }
 320
 321 static int wl12xx_op_start(struct ieee80211_hw *hw)
 322 {
 323         struct wl12xx *wl = hw->priv;
 324         int ret = 0;
 325
 326         wl12xx_debug(DEBUG_MAC80211, "mac80211 start");
 327
 328         mutex_lock(&wl->mutex);
 329
 330         if (wl->state != WL12XX_STATE_OFF) {
 331                 wl12xx_error("cannot start because not in off state: %d",
 332                              wl->state);
 333                 ret = -EBUSY;
 334                 goto out;
 335         }
 336
 337         ret = wl12xx_chip_wakeup(wl);
 338         if (ret < 0)
 339                 return ret;
 340
 341         ret = wl->chip.op_boot(wl);
 342         if (ret < 0)
 343                 goto out;
 344
 345         ret = wl->chip.op_hw_init(wl);
 346         if (ret < 0)
 347                 goto out;
 348
 349         ret = wl12xx_acx_station_id(wl);
 350         if (ret < 0)
 351                 goto out;
 352
 353         wl->state = WL12XX_STATE_ON;
 354
 355         wl12xx_info("firmware booted (%s)", wl->chip.fw_ver);
 356
 357 out:
 358         if (ret < 0)
 359                 wl12xx_power_off(wl);
 360
 361         mutex_unlock(&wl->mutex);
 362
 363         return ret;
 364 }
 365
 366 static void wl12xx_op_stop(struct ieee80211_hw *hw)
 367 {
 368         struct wl12xx *wl = hw->priv;
 369
 370         wl12xx_info("down");
 371
 372         wl12xx_debug(DEBUG_MAC80211, "mac80211 stop");
 373
 374         mutex_lock(&wl->mutex);
 375
 376         WARN_ON(wl->state != WL12XX_STATE_ON);
 377
 378         if (wl->scanning) {
 379                 mutex_unlock(&wl->mutex);
 380                 ieee80211_scan_completed(wl->hw, true);
 381                 mutex_lock(&wl->mutex);
 382                 wl->scanning = false;
 383         }
 384
 385         wl->state = WL12XX_STATE_OFF;
 386
 387         wl12xx_disable_interrupts(wl);
 388
 389         mutex_unlock(&wl->mutex);
 390
 391         cancel_work_sync(&wl->irq_work);
 392         cancel_work_sync(&wl->tx_work);
 393         cancel_work_sync(&wl->filter_work);
 394
 395         mutex_lock(&wl->mutex);
 396
 397         /* let's notify MAC80211 about the remaining pending TX frames */
 398         wl12xx_tx_flush(wl);
 399
 400         wl12xx_power_off(wl);
 401
 402         memset(wl->bssid, 0, ETH_ALEN);
 403         wl->listen_int = 1;
 404         wl->bss_type = MAX_BSS_TYPE;
 405
 406         wl->data_in_count = 0;
 407         wl->rx_counter = 0;
 408         wl->rx_handled = 0;
 409         wl->rx_current_buffer = 0;
 410         wl->rx_last_id = 0;
 411         wl->next_tx_complete = 0;
 412         wl->elp = false;
 413         wl->psm = 0;
 414         wl->tx_queue_stopped = false;
 415         wl->power_level = WL12XX_DEFAULT_POWER_LEVEL;
 416
 417         wl12xx_debugfs_reset(wl);
 418
 419         mutex_unlock(&wl->mutex);
 420 }
 421
 422 static int wl12xx_op_add_interface(struct ieee80211_hw *hw,
 423                                    struct ieee80211_if_init_conf *conf)
 424 {
 425         struct wl12xx *wl = hw->priv;
 426         DECLARE_MAC_BUF(mac);
 427         int ret = 0;
 428
 429         wl12xx_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %s",
 430                      conf->type, print_mac(mac, conf->mac_addr));
 431
 432         mutex_lock(&wl->mutex);
 433
 434         switch (conf->type) {
 435         case NL80211_IFTYPE_STATION:
 436                 wl->bss_type = BSS_TYPE_STA_BSS;
 437                 break;
 438         case NL80211_IFTYPE_ADHOC:
 439                 wl->bss_type = BSS_TYPE_IBSS;
 440                 break;
 441         default:
 442                 ret = -EOPNOTSUPP;
 443                 goto out;
 444         }
 445
 446         if (memcmp(wl->mac_addr, conf->mac_addr, ETH_ALEN)) {
 447                 memcpy(wl->mac_addr, conf->mac_addr, ETH_ALEN);
 448                 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
 449                 ret = wl12xx_acx_station_id(wl);
 450                 if (ret < 0)
 451                         goto out;
 452         }
 453
 454 out:
 455         mutex_unlock(&wl->mutex);
 456         return ret;
 457 }
 458
 459 static void wl12xx_op_remove_interface(struct ieee80211_hw *hw,
 460                                          struct ieee80211_if_init_conf *conf)
 461 {
 462         wl12xx_debug(DEBUG_MAC80211, "mac80211 remove interface");
 463 }
 464
 465 static int wl12xx_build_null_data(struct wl12xx *wl)
 466 {
 467         struct wl12xx_null_data_template template;
 468
 469         if (!is_zero_ether_addr(wl->bssid)) {
 470                 memcpy(template.header.da, wl->bssid, ETH_ALEN);
 471                 memcpy(template.header.bssid, wl->bssid, ETH_ALEN);
 472         } else {
 473                 memset(template.header.da, 0xff, ETH_ALEN);
 474                 memset(template.header.bssid, 0xff, ETH_ALEN);
 475         }
 476
 477         memcpy(template.header.sa, wl->mac_addr, ETH_ALEN);
 478         template.header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_DATA |
 479                                                 IEEE80211_STYPE_NULLFUNC);
 480
 481         return wl12xx_cmd_template_set(wl, CMD_NULL_DATA, &template,
 482                                        sizeof(template));
 483
 484 }
 485
 486 static int wl12xx_build_ps_poll(struct wl12xx *wl, u16 aid)
 487 {
 488         struct wl12xx_ps_poll_template template;
 489
 490         memcpy(template.bssid, wl->bssid, ETH_ALEN);
 491         memcpy(template.ta, wl->mac_addr, ETH_ALEN);
 492         template.aid = aid;
 493         template.fc = cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
 494
 495         return wl12xx_cmd_template_set(wl, CMD_PS_POLL, &template,
 496                                        sizeof(template));
 497
 498 }
 499
 500 static int wl12xx_op_config(struct ieee80211_hw *hw, u32 changed)
 501 {
 502         struct wl12xx *wl = hw->priv;
 503         struct ieee80211_conf *conf = &hw->conf;
 504         int channel, ret = 0;
 505
 506         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
 507
 508         wl12xx_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
 509                      channel,
 510                      conf->flags & IEEE80211_CONF_PS ? "on" : "off",
 511                      conf->power_level);
 512
 513         mutex_lock(&wl->mutex);
 514
 515         if (channel != wl->channel) {
 516                 /* FIXME: use beacon interval provided by mac80211 */
 517                 ret = wl12xx_cmd_join(wl, wl->bss_type, 1, 100, 0);
 518                 if (ret < 0)
 519                         goto out;
 520
 521                 wl->channel = channel;
 522         }
 523
 524         ret = wl12xx_build_null_data(wl);
 525         if (ret < 0)
 526                 goto out;
 527
 528         if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
 529                 wl12xx_info("psm enabled");
 530
 531                 wl->psm_requested = true;
 532
 533                 /*
 534                  * We enter PSM only if we're already associated.
 535                  * If we're not, we'll enter it when joining an SSID,
 536                  * through the bss_info_changed() hook.
 537                  */
 538                 ret = wl12xx_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
 539         } else if (!(conf->flags & IEEE80211_CONF_PS) &&
 540                    wl->psm_requested) {
 541                 wl12xx_info("psm disabled");
 542
 543                 wl->psm_requested = false;
 544
 545                 if (wl->psm)
 546                         ret = wl12xx_ps_set_mode(wl, STATION_ACTIVE_MODE);
 547         }
 548
 549         if (conf->power_level != wl->power_level) {
 550                 ret = wl12xx_acx_tx_power(wl, conf->power_level);
 551                 if (ret < 0)
 552                         goto out;
 553
 554                 wl->power_level = conf->power_level;
 555         }
 556
 557 out:
 558         mutex_unlock(&wl->mutex);
 559         return ret;
 560 }
 561
 562 #define WL12XX_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
 563                                   FIF_ALLMULTI | \
 564                                   FIF_FCSFAIL | \
 565                                   FIF_BCN_PRBRESP_PROMISC | \
 566                                   FIF_CONTROL | \
 567                                   FIF_OTHER_BSS)
 568
 569 static void wl12xx_op_configure_filter(struct ieee80211_hw *hw,
 570                                        unsigned int changed,
 571                                        unsigned int *total,
 572                                        int mc_count,
 573                                        struct dev_addr_list *mc_list)
 574 {
 575         struct wl12xx *wl = hw->priv;
 576
 577         wl12xx_debug(DEBUG_MAC80211, "mac80211 configure filter");
 578
 579         *total &= WL12XX_SUPPORTED_FILTERS;
 580         changed &= WL12XX_SUPPORTED_FILTERS;
 581
 582         if (changed == 0)
 583                 /* no filters which we support changed */
 584                 return;
 585
 586         /* FIXME: wl->rx_config and wl->rx_filter are not protected */
 587
 588         wl->rx_config = WL12XX_DEFAULT_RX_CONFIG;
 589         wl->rx_filter = WL12XX_DEFAULT_RX_FILTER;
 590
 591         if (*total & FIF_PROMISC_IN_BSS) {
 592                 wl->rx_config |= CFG_BSSID_FILTER_EN;
 593                 wl->rx_config |= CFG_RX_ALL_GOOD;
 594         }
 595         if (*total & FIF_ALLMULTI)
 596                 /*
 597                  * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
 598                  * all multicast frames
 599                  */
 600                 wl->rx_config &= ~CFG_MC_FILTER_EN;
 601         if (*total & FIF_FCSFAIL)
 602                 wl->rx_filter |= CFG_RX_FCS_ERROR;
 603         if (*total & FIF_BCN_PRBRESP_PROMISC) {
 604                 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
 605                 wl->rx_config &= ~CFG_SSID_FILTER_EN;
 606         }
 607         if (*total & FIF_CONTROL)
 608                 wl->rx_filter |= CFG_RX_CTL_EN;
 609         if (*total & FIF_OTHER_BSS)
 610                 wl->rx_filter &= ~CFG_BSSID_FILTER_EN;
 611
 612         /*
 613          * FIXME: workqueues need to be properly cancelled on stop(), for
 614          * now let's just disable changing the filter settings. They will
 615          * be updated any on config().
 616          */
 617         /* schedule_work(&wl->filter_work); */
 618 }
 619
 620 /* HW encryption */
 621 static int wl12xx_set_key_type(struct wl12xx *wl, struct acx_set_key *key,
 622                                enum set_key_cmd cmd,
 623                                struct ieee80211_key_conf *mac80211_key,
 624                                const u8 *addr)
 625 {
 626         switch (mac80211_key->alg) {
 627         case ALG_WEP:
 628                 if (is_broadcast_ether_addr(addr))
 629                         key->key_type = KEY_WEP_DEFAULT;
 630                 else
 631                         key->key_type = KEY_WEP_ADDR;
 632
 633                 mac80211_key->hw_key_idx = mac80211_key->keyidx;
 634                 break;
 635         case ALG_TKIP:
 636                 if (is_broadcast_ether_addr(addr))
 637                         key->key_type = KEY_TKIP_MIC_GROUP;
 638                 else
 639                         key->key_type = KEY_TKIP_MIC_PAIRWISE;
 640
 641                 mac80211_key->hw_key_idx = mac80211_key->keyidx;
 642                 break;
 643         case ALG_CCMP:
 644                 if (is_broadcast_ether_addr(addr))
 645                         key->key_type = KEY_AES_GROUP;
 646                 else
 647                         key->key_type = KEY_AES_PAIRWISE;
 648                 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
 649                 break;
 650         default:
 651                 wl12xx_error("Unknown key algo 0x%x", mac80211_key->alg);
 652                 return -EOPNOTSUPP;
 653         }
 654
 655         return 0;
 656 }
 657
 658 static int wl12xx_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 659                              struct ieee80211_vif *vif,
 660                              struct ieee80211_sta *sta,
 661                              struct ieee80211_key_conf *key)
 662 {
 663         struct wl12xx *wl = hw->priv;
 664         struct acx_set_key wl_key;
 665         const u8 *addr;
 666         int ret;
 667
 668         static const u8 bcast_addr[ETH_ALEN] =
 669                 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 670
 671         wl12xx_debug(DEBUG_MAC80211, "mac80211 set key");
 672
 673         memset(&wl_key, 0, sizeof(wl_key));
 674
 675         addr = sta ? sta->addr : bcast_addr;
 676
 677         wl12xx_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
 678         wl12xx_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
 679         wl12xx_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
 680                      key->alg, key->keyidx, key->keylen, key->flags);
 681         wl12xx_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
 682
 683         mutex_lock(&wl->mutex);
 684
 685         switch (cmd) {
 686         case SET_KEY:
 687                 wl_key.key_action = KEY_ADD_OR_REPLACE;
 688                 break;
 689         case DISABLE_KEY:
 690                 wl_key.key_action = KEY_REMOVE;
 691                 break;
 692         default:
 693                 wl12xx_error("Unsupported key cmd 0x%x", cmd);
 694                 break;
 695         }
 696
 697         ret = wl12xx_set_key_type(wl, &wl_key, cmd, key, addr);
 698         if (ret < 0) {
 699                 wl12xx_error("Set KEY type failed");
 700                 goto out;
 701         }
 702
 703         if (wl_key.key_type != KEY_WEP_DEFAULT)
 704                 memcpy(wl_key.addr, addr, ETH_ALEN);
 705
 706         if ((wl_key.key_type == KEY_TKIP_MIC_GROUP) ||
 707             (wl_key.key_type == KEY_TKIP_MIC_PAIRWISE)) {
 708                 /*
 709                  * We get the key in the following form:
 710                  * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
 711                  * but the target is expecting:
 712                  * TKIP - RX MIC - TX MIC
 713                  */
 714                 memcpy(wl_key.key, key->key, 16);
 715                 memcpy(wl_key.key + 16, key->key + 24, 8);
 716                 memcpy(wl_key.key + 24, key->key + 16, 8);
 717
 718         } else {
 719                 memcpy(wl_key.key, key->key, key->keylen);
 720         }
 721         wl_key.key_size = key->keylen;
 722
 723         wl_key.id = key->keyidx;
 724         wl_key.ssid_profile = 0;
 725
 726         wl12xx_dump(DEBUG_CRYPT, "TARGET KEY: ", &wl_key, sizeof(wl_key));
 727
 728         if (wl12xx_cmd_send(wl, CMD_SET_KEYS, &wl_key, sizeof(wl_key)) < 0) {
 729                 wl12xx_error("Set KEY failed");
 730                 ret = -EOPNOTSUPP;
 731                 goto out;
 732         }
 733
 734 out:
 735         mutex_unlock(&wl->mutex);
 736         return ret;
 737 }
 738
 739 static int wl12xx_build_basic_rates(char *rates)
 740 {
 741         u8 index = 0;
 742
 743         rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_1MB;
 744         rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_2MB;
 745         rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_5MB;
 746         rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_11MB;
 747
 748         return index;
 749 }
 750
 751 static int wl12xx_build_extended_rates(char *rates)
 752 {
 753         u8 index = 0;
 754
 755         rates[index++] = IEEE80211_OFDM_RATE_6MB;
 756         rates[index++] = IEEE80211_OFDM_RATE_9MB;
 757         rates[index++] = IEEE80211_OFDM_RATE_12MB;
 758         rates[index++] = IEEE80211_OFDM_RATE_18MB;
 759         rates[index++] = IEEE80211_OFDM_RATE_24MB;
 760         rates[index++] = IEEE80211_OFDM_RATE_36MB;
 761         rates[index++] = IEEE80211_OFDM_RATE_48MB;
 762         rates[index++] = IEEE80211_OFDM_RATE_54MB;
 763
 764         return index;
 765 }
 766
 767
 768 static int wl12xx_build_probe_req(struct wl12xx *wl, u8 *ssid, size_t ssid_len)
 769 {
 770         struct wl12xx_probe_req_template template;
 771         struct wl12xx_ie_rates *rates;
 772         char *ptr;
 773         u16 size;
 774
 775         ptr = (char *)&template;
 776         size = sizeof(struct ieee80211_header);
 777
 778         memset(template.header.da, 0xff, ETH_ALEN);
 779         memset(template.header.bssid, 0xff, ETH_ALEN);
 780         memcpy(template.header.sa, wl->mac_addr, ETH_ALEN);
 781         template.header.frame_ctl = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
 782
 783         /* IEs */
 784         /* SSID */
 785         template.ssid.header.id = WLAN_EID_SSID;
 786         template.ssid.header.len = ssid_len;
 787         if (ssid_len && ssid)
 788                 memcpy(template.ssid.ssid, ssid, ssid_len);
 789         size += sizeof(struct wl12xx_ie_header) + ssid_len;
 790         ptr += size;
 791
 792         /* Basic Rates */
 793         rates = (struct wl12xx_ie_rates *)ptr;
 794         rates->header.id = WLAN_EID_SUPP_RATES;
 795         rates->header.len = wl12xx_build_basic_rates(rates->rates);
 796         size += sizeof(struct wl12xx_ie_header) + rates->header.len;
 797         ptr += sizeof(struct wl12xx_ie_header) + rates->header.len;
 798
 799         /* Extended rates */
 800         rates = (struct wl12xx_ie_rates *)ptr;
 801         rates->header.id = WLAN_EID_EXT_SUPP_RATES;
 802         rates->header.len = wl12xx_build_extended_rates(rates->rates);
 803         size += sizeof(struct wl12xx_ie_header) + rates->header.len;
 804
 805         wl12xx_dump(DEBUG_SCAN, "PROBE REQ: ", &template, size);
 806
 807         return wl12xx_cmd_template_set(wl, CMD_PROBE_REQ, &template,
 808                                       size);
 809 }
 810
 811 static int wl12xx_hw_scan(struct wl12xx *wl, u8 *ssid, size_t len,
 812                           u8 active_scan, u8 high_prio, u8 num_channels,
 813                           u8 probe_requests)
 814 {
 815         int i, ret;
 816         u32 split_scan = 0;
 817         u16 scan_options = 0;
 818         struct cmd_scan *params;
 819         struct wl12xx_command *cmd_answer;
 820
 821         if (wl->scanning)
 822                 return -EINVAL;
 823
 824         params = kzalloc(sizeof(*params), GFP_KERNEL);
 825         if (!params)
 826                 return -ENOMEM;
 827
 828         params->params.rx_config_options = cpu_to_le32(CFG_RX_ALL_GOOD);
 829         params->params.rx_filter_options =
 830                 cpu_to_le32(CFG_RX_PRSP_EN | CFG_RX_MGMT_EN | CFG_RX_BCN_EN);
 831
 832         /* High priority scan */
 833         if (!active_scan)
 834                 scan_options |= SCAN_PASSIVE;
 835         if (high_prio)
 836                 scan_options |= SCAN_PRIORITY_HIGH;
 837         params->params.scan_options = scan_options;
 838
 839         params->params.num_channels = num_channels;
 840         params->params.num_probe_requests = probe_requests;
 841         params->params.tx_rate = cpu_to_le16(1 << 1); /* 2 Mbps */
 842         params->params.tid_trigger = 0;
 843
 844         for (i = 0; i < num_channels; i++) {
 845                 params->channels[i].min_duration = cpu_to_le32(30000);
 846                 params->channels[i].max_duration = cpu_to_le32(60000);
 847                 memset(&params->channels[i].bssid_lsb, 0xff, 4);
 848                 memset(&params->channels[i].bssid_msb, 0xff, 2);
 849                 params->channels[i].early_termination = 0;
 850                 params->channels[i].tx_power_att = 0;
 851                 params->channels[i].channel = i + 1;
 852                 memset(params->channels[i].pad, 0, 3);
 853         }
 854
 855         for (i = num_channels; i < SCAN_MAX_NUM_OF_CHANNELS; i++)
 856                 memset(&params->channels[i], 0,
 857                        sizeof(struct basic_scan_channel_parameters));
 858
 859         if (len && ssid) {
 860                 params->params.ssid_len = len;
 861                 memcpy(params->params.ssid, ssid, len);
 862         } else {
 863                 params->params.ssid_len = 0;
 864                 memset(params->params.ssid, 0, 32);
 865         }
 866
 867         ret = wl12xx_build_probe_req(wl, ssid, len);
 868         if (ret < 0) {
 869                 wl12xx_error("PROBE request template failed");
 870                 goto out;
 871         }
 872
 873         ret = wl12xx_cmd_send(wl, CMD_TRIGGER_SCAN_TO, &split_scan,
 874                               sizeof(u32));
 875         if (ret < 0) {
 876                 wl12xx_error("Split SCAN failed");
 877                 goto out;
 878         }
 879
 880         wl12xx_dump(DEBUG_SCAN, "SCAN: ", params, sizeof(*params));
 881
 882         wl->scanning = true;
 883
 884         ret = wl12xx_cmd_send(wl, CMD_SCAN, params, sizeof(*params));
 885         if (ret < 0)
 886                 wl12xx_error("SCAN failed");
 887
 888         wl12xx_spi_mem_read(wl, wl->cmd_box_addr, params, sizeof(*params));
 889
 890         cmd_answer = (struct wl12xx_command *) params;
 891         if (cmd_answer->status != CMD_STATUS_SUCCESS) {
 892                 wl12xx_error("TEST command answer error: %d",
 893                              cmd_answer->status);
 894                 wl->scanning = false;
 895                 ret = -EIO;
 896                 goto out;
 897         }
 898
 899 out:
 900         kfree(params);
 901         return ret;
 902
 903 }
 904
 905 static int wl12xx_op_hw_scan(struct ieee80211_hw *hw,
 906                              struct cfg80211_scan_request *req)
 907 {
 908         struct wl12xx *wl = hw->priv;
 909         int ret;
 910         u8 *ssid = NULL;
 911         size_t ssid_len = 0;
 912
 913         wl12xx_debug(DEBUG_MAC80211, "mac80211 hw scan");
 914
 915         if (req->n_ssids) {
 916                 ssid = req->ssids[0].ssid;
 917                 ssid_len = req->ssids[0].ssid_len;
 918         }
 919
 920         mutex_lock(&wl->mutex);
 921         ret = wl12xx_hw_scan(hw->priv, ssid, ssid_len, 1, 0, 13, 3);
 922         mutex_unlock(&wl->mutex);
 923
 924         return ret;
 925 }
 926
 927 static int wl12xx_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
 928 {
 929         struct wl12xx *wl = hw->priv;
 930         int ret;
 931
 932         ret = wl12xx_acx_rts_threshold(wl, (u16) value);
 933
 934         if (ret < 0)
 935                 wl12xx_warning("wl12xx_op_set_rts_threshold failed: %d", ret);
 936
 937         return ret;
 938 }
 939
 940 static void wl12xx_op_bss_info_changed(struct ieee80211_hw *hw,
 941                                        struct ieee80211_vif *vif,
 942                                        struct ieee80211_bss_conf *bss_conf,
 943                                        u32 changed)
 944 {
 945         enum acx_ps_mode mode;
 946         struct wl12xx *wl = hw->priv;
 947         struct sk_buff *beacon;
 948         int ret;
 949
 950         wl12xx_debug(DEBUG_MAC80211, "mac80211 bss info changed");
 951
 952         mutex_lock(&wl->mutex);
 953
 954         if (changed & BSS_CHANGED_ASSOC) {
 955                 if (bss_conf->assoc) {
 956                         wl->aid = bss_conf->aid;
 957
 958                         ret = wl12xx_build_ps_poll(wl, wl->aid);
 959                         if (ret < 0)
 960                                 goto out;
 961
 962                         ret = wl12xx_acx_aid(wl, wl->aid);
 963                         if (ret < 0)
 964                                 goto out;
 965
 966                         /* If we want to go in PSM but we're not there yet */
 967                         if (wl->psm_requested && !wl->psm) {
 968                                 mode = STATION_POWER_SAVE_MODE;
 969                                 ret = wl12xx_ps_set_mode(wl, mode);
 970                                 if (ret < 0)
 971                                         goto out;
 972                         }
 973                 }
 974         }
 975         if (changed & BSS_CHANGED_ERP_SLOT) {
 976                 if (bss_conf->use_short_slot)
 977                         ret = wl12xx_acx_slot(wl, SLOT_TIME_SHORT);
 978                 else
 979                         ret = wl12xx_acx_slot(wl, SLOT_TIME_LONG);
 980                 if (ret < 0) {
 981                         wl12xx_warning("Set slot time failed %d", ret);
 982                         goto out;
 983                 }
 984         }
 985
 986         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
 987                 if (bss_conf->use_short_preamble)
 988                         wl12xx_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
 989                 else
 990                         wl12xx_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
 991         }
 992
 993         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
 994                 if (bss_conf->use_cts_prot)
 995                         ret = wl12xx_acx_cts_protect(wl, CTSPROTECT_ENABLE);
 996                 else
 997                         ret = wl12xx_acx_cts_protect(wl, CTSPROTECT_DISABLE);
 998                 if (ret < 0) {
 999                         wl12xx_warning("Set ctsprotect failed %d", ret);
1000                         goto out;
1001                 }
1002         }
1003
1004         if (changed & BSS_CHANGED_BSSID) {
1005                 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
1006
1007                 ret = wl12xx_build_null_data(wl);
1008                 if (ret < 0)
1009                         goto out;
1010
1011                 if (wl->bss_type != BSS_TYPE_IBSS) {
1012                         ret = wl12xx_cmd_join(wl, wl->bss_type, 5, 100, 1);
1013                         if (ret < 0)
1014                                 goto out;
1015                 }
1016         }
1017
1018         if (changed & BSS_CHANGED_BEACON) {
1019                 beacon = ieee80211_beacon_get(hw, vif);
1020                 ret = wl12xx_cmd_template_set(wl, CMD_BEACON, beacon->data,
1021                                               beacon->len);
1022
1023                 if (ret < 0) {
1024                         dev_kfree_skb(beacon);
1025                         goto out;
1026                 }
1027
1028                 ret = wl12xx_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
1029                                               beacon->len);
1030
1031                 dev_kfree_skb(beacon);
1032
1033                 if (ret < 0)
1034                         goto out;
1035
1036                 ret = wl12xx_cmd_join(wl, wl->bss_type, 1, 100, 0);
1037
1038                 if (ret < 0)
1039                         goto out;
1040         }
1041
1042 out:
1043         mutex_unlock(&wl->mutex);
1044 }
1045
1046
1047 /* can't be const, mac80211 writes to this */
1048 static struct ieee80211_rate wl12xx_rates[] = {
1049         { .bitrate = 10,
1050           .hw_value = 0x1,
1051           .hw_value_short = 0x1, },
1052         { .bitrate = 20,
1053           .hw_value = 0x2,
1054           .hw_value_short = 0x2,
1055           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1056         { .bitrate = 55,
1057           .hw_value = 0x4,
1058           .hw_value_short = 0x4,
1059           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1060         { .bitrate = 110,
1061           .hw_value = 0x20,
1062           .hw_value_short = 0x20,
1063           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1064         { .bitrate = 60,
1065           .hw_value = 0x8,
1066           .hw_value_short = 0x8, },
1067         { .bitrate = 90,
1068           .hw_value = 0x10,
1069           .hw_value_short = 0x10, },
1070         { .bitrate = 120,
1071           .hw_value = 0x40,
1072           .hw_value_short = 0x40, },
1073         { .bitrate = 180,
1074           .hw_value = 0x80,
1075           .hw_value_short = 0x80, },
1076         { .bitrate = 240,
1077           .hw_value = 0x200,
1078           .hw_value_short = 0x200, },
1079         { .bitrate = 360,
1080          .hw_value = 0x400,
1081          .hw_value_short = 0x400, },
1082         { .bitrate = 480,
1083           .hw_value = 0x800,
1084           .hw_value_short = 0x800, },
1085         { .bitrate = 540,
1086           .hw_value = 0x1000,
1087           .hw_value_short = 0x1000, },
1088 };
1089
1090 /* can't be const, mac80211 writes to this */
1091 static struct ieee80211_channel wl12xx_channels[] = {
1092         { .hw_value = 1, .center_freq = 2412},
1093         { .hw_value = 2, .center_freq = 2417},
1094         { .hw_value = 3, .center_freq = 2422},
1095         { .hw_value = 4, .center_freq = 2427},
1096         { .hw_value = 5, .center_freq = 2432},
1097         { .hw_value = 6, .center_freq = 2437},
1098         { .hw_value = 7, .center_freq = 2442},
1099         { .hw_value = 8, .center_freq = 2447},
1100         { .hw_value = 9, .center_freq = 2452},
1101         { .hw_value = 10, .center_freq = 2457},
1102         { .hw_value = 11, .center_freq = 2462},
1103         { .hw_value = 12, .center_freq = 2467},
1104         { .hw_value = 13, .center_freq = 2472},
1105 };
1106
1107 /* can't be const, mac80211 writes to this */
1108 static struct ieee80211_supported_band wl12xx_band_2ghz = {
1109         .channels = wl12xx_channels,
1110         .n_channels = ARRAY_SIZE(wl12xx_channels),
1111         .bitrates = wl12xx_rates,
1112         .n_bitrates = ARRAY_SIZE(wl12xx_rates),
1113 };
1114
1115 static const struct ieee80211_ops wl12xx_ops = {
1116         .start = wl12xx_op_start,
1117         .stop = wl12xx_op_stop,
1118         .add_interface = wl12xx_op_add_interface,
1119         .remove_interface = wl12xx_op_remove_interface,
1120         .config = wl12xx_op_config,
1121         .configure_filter = wl12xx_op_configure_filter,
1122         .tx = wl12xx_op_tx,
1123         .set_key = wl12xx_op_set_key,
1124         .hw_scan = wl12xx_op_hw_scan,
1125         .bss_info_changed = wl12xx_op_bss_info_changed,
1126         .set_rts_threshold = wl12xx_op_set_rts_threshold,
1127 };
1128
1129 static int wl12xx_register_hw(struct wl12xx *wl)
1130 {
1131         int ret;
1132
1133         if (wl->mac80211_registered)
1134                 return 0;
1135
1136         SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1137
1138         ret = ieee80211_register_hw(wl->hw);
1139         if (ret < 0) {
1140                 wl12xx_error("unable to register mac80211 hw: %d", ret);
1141                 return ret;
1142         }
1143
1144         wl->mac80211_registered = true;
1145
1146         wl12xx_notice("loaded");
1147
1148         return 0;
1149 }
1150
1151 static int wl12xx_init_ieee80211(struct wl12xx *wl)
1152 {
1153         /* The tx descriptor buffer and the TKIP space */
1154         wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
1155                 + WL12XX_TKIP_IV_SPACE;
1156
1157         /* unit us */
1158         /* FIXME: find a proper value */
1159         wl->hw->channel_change_time = 10000;
1160
1161         wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1162                 IEEE80211_HW_NOISE_DBM;
1163
1164         wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1165         wl->hw->wiphy->max_scan_ssids = 1;
1166         wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl12xx_band_2ghz;
1167
1168         SET_IEEE80211_DEV(wl->hw, &wl->spi->dev);
1169
1170         return 0;
1171 }
1172
1173 #define WL12XX_DEFAULT_CHANNEL 1
1174 static int __devinit wl12xx_probe(struct spi_device *spi)
1175 {
1176         struct wl12xx_platform_data *pdata;
1177         struct ieee80211_hw *hw;
1178         struct wl12xx *wl;
1179         int ret, i;
1180         static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1181
1182         pdata = spi->dev.platform_data;
1183         if (!pdata) {
1184                 wl12xx_error("no platform data");
1185                 return -ENODEV;
1186         }
1187
1188         hw = ieee80211_alloc_hw(sizeof(*wl), &wl12xx_ops);
1189         if (!hw) {
1190                 wl12xx_error("could not alloc ieee80211_hw");
1191                 return -ENOMEM;
1192         }
1193
1194         wl = hw->priv;
1195         memset(wl, 0, sizeof(*wl));
1196
1197         wl->hw = hw;
1198         dev_set_drvdata(&spi->dev, wl);
1199         wl->spi = spi;
1200
1201         wl->data_in_count = 0;
1202
1203         skb_queue_head_init(&wl->tx_queue);
1204
1205         INIT_WORK(&wl->tx_work, wl12xx_tx_work);
1206         INIT_WORK(&wl->filter_work, wl12xx_filter_work);
1207         wl->channel = WL12XX_DEFAULT_CHANNEL;
1208         wl->scanning = false;
1209         wl->default_key = 0;
1210         wl->listen_int = 1;
1211         wl->rx_counter = 0;
1212         wl->rx_handled = 0;
1213         wl->rx_current_buffer = 0;
1214         wl->rx_last_id = 0;
1215         wl->rx_config = WL12XX_DEFAULT_RX_CONFIG;
1216         wl->rx_filter = WL12XX_DEFAULT_RX_FILTER;
1217         wl->elp = false;
1218         wl->psm = 0;
1219         wl->psm_requested = false;
1220         wl->tx_queue_stopped = false;
1221         wl->power_level = WL12XX_DEFAULT_POWER_LEVEL;
1222
1223         /* We use the default power on sleep time until we know which chip
1224          * we're using */
1225         wl->chip.power_on_sleep = WL12XX_DEFAULT_POWER_ON_SLEEP;
1226
1227         for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1228                 wl->tx_frames[i] = NULL;
1229
1230         wl->next_tx_complete = 0;
1231
1232         /*
1233          * In case our MAC address is not correctly set,
1234          * we use a random but Nokia MAC.
1235          */
1236         memcpy(wl->mac_addr, nokia_oui, 3);
1237         get_random_bytes(wl->mac_addr + 3, 3);
1238
1239         wl->state = WL12XX_STATE_OFF;
1240         mutex_init(&wl->mutex);
1241
1242         wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
1243         wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
1244
1245         /* This is the only SPI value that we need to set here, the rest
1246          * comes from the board-peripherals file */
1247         spi->bits_per_word = 32;
1248
1249         ret = spi_setup(spi);
1250         if (ret < 0) {
1251                 wl12xx_error("spi_setup failed");
1252                 goto out_free;
1253         }
1254
1255         wl->set_power = pdata->set_power;
1256         if (!wl->set_power) {
1257                 wl12xx_error("set power function missing in platform data");
1258                 return -ENODEV;
1259         }
1260
1261         wl->irq = spi->irq;
1262         if (wl->irq < 0) {
1263                 wl12xx_error("irq missing in platform data");
1264                 return -ENODEV;
1265         }
1266
1267         ret = request_irq(wl->irq, wl12xx_irq, 0, DRIVER_NAME, wl);
1268         if (ret < 0) {
1269                 wl12xx_error("request_irq() failed: %d", ret);
1270                 goto out_free;
1271         }
1272
1273         set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING);
1274
1275         disable_irq(wl->irq);
1276
1277         ret = wl12xx_init_ieee80211(wl);
1278         if (ret)
1279                 goto out_irq;
1280
1281         ret = wl12xx_register_hw(wl);
1282         if (ret)
1283                 goto out_irq;
1284
1285         wl12xx_debugfs_init(wl);
1286
1287         wl12xx_notice("initialized");
1288
1289         return 0;
1290
1291  out_irq:
1292         free_irq(wl->irq, wl);
1293
1294  out_free:
1295         ieee80211_free_hw(hw);
1296
1297         return ret;
1298 }
1299
1300 static int __devexit wl12xx_remove(struct spi_device *spi)
1301 {
1302         struct wl12xx *wl = dev_get_drvdata(&spi->dev);
1303
1304         ieee80211_unregister_hw(wl->hw);
1305
1306         wl12xx_debugfs_exit(wl);
1307
1308         free_irq(wl->irq, wl);
1309         kfree(wl->target_mem_map);
1310         kfree(wl->data_path);
1311         kfree(wl->fw);
1312         wl->fw = NULL;
1313         kfree(wl->nvs);
1314         wl->nvs = NULL;
1315         ieee80211_free_hw(wl->hw);
1316
1317         return 0;
1318 }
1319
1320
1321 static struct spi_driver wl12xx_spi_driver = {
1322         .driver = {
1323                 .name           = "wl12xx",
1324                 .bus            = &spi_bus_type,
1325                 .owner          = THIS_MODULE,
1326         },
1327
1328         .probe          = wl12xx_probe,
1329         .remove         = __devexit_p(wl12xx_remove),
1330 };
1331
1332 static int __init wl12xx_init(void)
1333 {
1334         int ret;
1335
1336         ret = spi_register_driver(&wl12xx_spi_driver);
1337         if (ret < 0) {
1338                 wl12xx_error("failed to register spi driver: %d", ret);
1339                 goto out;
1340         }
1341
1342 out:
1343         return ret;
1344 }
1345
1346 static void __exit wl12xx_exit(void)
1347 {
1348         spi_unregister_driver(&wl12xx_spi_driver);
1349
1350         wl12xx_notice("unloaded");
1351 }
1352
1353 module_init(wl12xx_init);
1354 module_exit(wl12xx_exit);
1355
1356 MODULE_LICENSE("GPL");
1357 MODULE_AUTHOR("Kalle Valo <Kalle.Valo@nokia.com>, "
1358                 "Luciano Coelho <luciano.coelho@nokia.com>");