SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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,
 622                                struct wl12xx_cmd_set_keys *key,
 623                                enum set_key_cmd cmd,
 624                                struct ieee80211_key_conf *mac80211_key,
 625                                const u8 *addr)
 626 {
 627         switch (mac80211_key->alg) {
 628         case ALG_WEP:
 629                 if (is_broadcast_ether_addr(addr))
 630                         key->key_type = KEY_WEP_DEFAULT;
 631                 else
 632                         key->key_type = KEY_WEP_ADDR;
 633
 634                 mac80211_key->hw_key_idx = mac80211_key->keyidx;
 635                 break;
 636         case ALG_TKIP:
 637                 if (is_broadcast_ether_addr(addr))
 638                         key->key_type = KEY_TKIP_MIC_GROUP;
 639                 else
 640                         key->key_type = KEY_TKIP_MIC_PAIRWISE;
 641
 642                 mac80211_key->hw_key_idx = mac80211_key->keyidx;
 643                 break;
 644         case ALG_CCMP:
 645                 if (is_broadcast_ether_addr(addr))
 646                         key->key_type = KEY_AES_GROUP;
 647                 else
 648                         key->key_type = KEY_AES_PAIRWISE;
 649                 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
 650                 break;
 651         default:
 652                 wl12xx_error("Unknown key algo 0x%x", mac80211_key->alg);
 653                 return -EOPNOTSUPP;
 654         }
 655
 656         return 0;
 657 }
 658
 659 static int wl12xx_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 660                              struct ieee80211_vif *vif,
 661                              struct ieee80211_sta *sta,
 662                              struct ieee80211_key_conf *key)
 663 {
 664         struct wl12xx *wl = hw->priv;
 665         struct wl12xx_cmd_set_keys *wl_cmd;
 666         const u8 *addr;
 667         int ret;
 668
 669         static const u8 bcast_addr[ETH_ALEN] =
 670                 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 671
 672         wl12xx_debug(DEBUG_MAC80211, "mac80211 set key");
 673
 674         wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
 675         if (!wl_cmd) {
 676                 ret = -ENOMEM;
 677                 goto out;
 678         }
 679
 680         addr = sta ? sta->addr : bcast_addr;
 681
 682         wl12xx_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
 683         wl12xx_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
 684         wl12xx_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
 685                      key->alg, key->keyidx, key->keylen, key->flags);
 686         wl12xx_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
 687
 688         if (is_zero_ether_addr(addr)) {
 689                 /* We dont support TX only encryption */
 690                 ret = -EOPNOTSUPP;
 691                 goto out;
 692         }
 693
 694         mutex_lock(&wl->mutex);
 695
 696         switch (cmd) {
 697         case SET_KEY:
 698                 wl_cmd->key_action = KEY_ADD_OR_REPLACE;
 699                 break;
 700         case DISABLE_KEY:
 701                 wl_cmd->key_action = KEY_REMOVE;
 702                 break;
 703         default:
 704                 wl12xx_error("Unsupported key cmd 0x%x", cmd);
 705                 break;
 706         }
 707
 708         ret = wl12xx_set_key_type(wl, wl_cmd, cmd, key, addr);
 709         if (ret < 0) {
 710                 wl12xx_error("Set KEY type failed");
 711                 goto out_unlock;
 712         }
 713
 714         if (wl_cmd->key_type != KEY_WEP_DEFAULT)
 715                 memcpy(wl_cmd->addr, addr, ETH_ALEN);
 716
 717         if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
 718             (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
 719                 /*
 720                  * We get the key in the following form:
 721                  * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
 722                  * but the target is expecting:
 723                  * TKIP - RX MIC - TX MIC
 724                  */
 725                 memcpy(wl_cmd->key, key->key, 16);
 726                 memcpy(wl_cmd->key + 16, key->key + 24, 8);
 727                 memcpy(wl_cmd->key + 24, key->key + 16, 8);
 728
 729         } else {
 730                 memcpy(wl_cmd->key, key->key, key->keylen);
 731         }
 732         wl_cmd->key_size = key->keylen;
 733
 734         wl_cmd->id = key->keyidx;
 735         wl_cmd->ssid_profile = 0;
 736
 737         wl12xx_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
 738
 739         ret = wl12xx_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
 740         if (ret < 0) {
 741                 wl12xx_warning("could not set keys");
 742                 goto out_unlock;
 743         }
 744
 745 out_unlock:
 746         mutex_unlock(&wl->mutex);
 747
 748 out:
 749         kfree(wl_cmd);
 750
 751         return ret;
 752 }
 753
 754 static int wl12xx_build_basic_rates(char *rates)
 755 {
 756         u8 index = 0;
 757
 758         rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_1MB;
 759         rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_2MB;
 760         rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_5MB;
 761         rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_11MB;
 762
 763         return index;
 764 }
 765
 766 static int wl12xx_build_extended_rates(char *rates)
 767 {
 768         u8 index = 0;
 769
 770         rates[index++] = IEEE80211_OFDM_RATE_6MB;
 771         rates[index++] = IEEE80211_OFDM_RATE_9MB;
 772         rates[index++] = IEEE80211_OFDM_RATE_12MB;
 773         rates[index++] = IEEE80211_OFDM_RATE_18MB;
 774         rates[index++] = IEEE80211_OFDM_RATE_24MB;
 775         rates[index++] = IEEE80211_OFDM_RATE_36MB;
 776         rates[index++] = IEEE80211_OFDM_RATE_48MB;
 777         rates[index++] = IEEE80211_OFDM_RATE_54MB;
 778
 779         return index;
 780 }
 781
 782
 783 static int wl12xx_build_probe_req(struct wl12xx *wl, u8 *ssid, size_t ssid_len)
 784 {
 785         struct wl12xx_probe_req_template template;
 786         struct wl12xx_ie_rates *rates;
 787         char *ptr;
 788         u16 size;
 789
 790         ptr = (char *)&template;
 791         size = sizeof(struct ieee80211_header);
 792
 793         memset(template.header.da, 0xff, ETH_ALEN);
 794         memset(template.header.bssid, 0xff, ETH_ALEN);
 795         memcpy(template.header.sa, wl->mac_addr, ETH_ALEN);
 796         template.header.frame_ctl = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
 797
 798         /* IEs */
 799         /* SSID */
 800         template.ssid.header.id = WLAN_EID_SSID;
 801         template.ssid.header.len = ssid_len;
 802         if (ssid_len && ssid)
 803                 memcpy(template.ssid.ssid, ssid, ssid_len);
 804         size += sizeof(struct wl12xx_ie_header) + ssid_len;
 805         ptr += size;
 806
 807         /* Basic Rates */
 808         rates = (struct wl12xx_ie_rates *)ptr;
 809         rates->header.id = WLAN_EID_SUPP_RATES;
 810         rates->header.len = wl12xx_build_basic_rates(rates->rates);
 811         size += sizeof(struct wl12xx_ie_header) + rates->header.len;
 812         ptr += sizeof(struct wl12xx_ie_header) + rates->header.len;
 813
 814         /* Extended rates */
 815         rates = (struct wl12xx_ie_rates *)ptr;
 816         rates->header.id = WLAN_EID_EXT_SUPP_RATES;
 817         rates->header.len = wl12xx_build_extended_rates(rates->rates);
 818         size += sizeof(struct wl12xx_ie_header) + rates->header.len;
 819
 820         wl12xx_dump(DEBUG_SCAN, "PROBE REQ: ", &template, size);
 821
 822         return wl12xx_cmd_template_set(wl, CMD_PROBE_REQ, &template,
 823                                       size);
 824 }
 825
 826 static int wl12xx_hw_scan(struct wl12xx *wl, u8 *ssid, size_t len,
 827                           u8 active_scan, u8 high_prio, u8 num_channels,
 828                           u8 probe_requests)
 829 {
 830         struct wl12xx_cmd_trigger_scan_to *trigger = NULL;
 831         struct cmd_scan *params = NULL;
 832         int i, ret;
 833         u16 scan_options = 0;
 834
 835         if (wl->scanning)
 836                 return -EINVAL;
 837
 838         params = kzalloc(sizeof(*params), GFP_KERNEL);
 839         if (!params)
 840                 return -ENOMEM;
 841
 842         params->params.rx_config_options = cpu_to_le32(CFG_RX_ALL_GOOD);
 843         params->params.rx_filter_options =
 844                 cpu_to_le32(CFG_RX_PRSP_EN | CFG_RX_MGMT_EN | CFG_RX_BCN_EN);
 845
 846         /* High priority scan */
 847         if (!active_scan)
 848                 scan_options |= SCAN_PASSIVE;
 849         if (high_prio)
 850                 scan_options |= SCAN_PRIORITY_HIGH;
 851         params->params.scan_options = scan_options;
 852
 853         params->params.num_channels = num_channels;
 854         params->params.num_probe_requests = probe_requests;
 855         params->params.tx_rate = cpu_to_le16(1 << 1); /* 2 Mbps */
 856         params->params.tid_trigger = 0;
 857
 858         for (i = 0; i < num_channels; i++) {
 859                 params->channels[i].min_duration = cpu_to_le32(30000);
 860                 params->channels[i].max_duration = cpu_to_le32(60000);
 861                 memset(&params->channels[i].bssid_lsb, 0xff, 4);
 862                 memset(&params->channels[i].bssid_msb, 0xff, 2);
 863                 params->channels[i].early_termination = 0;
 864                 params->channels[i].tx_power_att = 0;
 865                 params->channels[i].channel = i + 1;
 866                 memset(params->channels[i].pad, 0, 3);
 867         }
 868
 869         for (i = num_channels; i < SCAN_MAX_NUM_OF_CHANNELS; i++)
 870                 memset(&params->channels[i], 0,
 871                        sizeof(struct basic_scan_channel_parameters));
 872
 873         if (len && ssid) {
 874                 params->params.ssid_len = len;
 875                 memcpy(params->params.ssid, ssid, len);
 876         } else {
 877                 params->params.ssid_len = 0;
 878                 memset(params->params.ssid, 0, 32);
 879         }
 880
 881         ret = wl12xx_build_probe_req(wl, ssid, len);
 882         if (ret < 0) {
 883                 wl12xx_error("PROBE request template failed");
 884                 goto out;
 885         }
 886
 887         trigger = kzalloc(sizeof(*trigger), GFP_KERNEL);
 888         if (!trigger)
 889                 goto out;
 890
 891         trigger->timeout = 0;
 892
 893         ret = wl12xx_cmd_send(wl, CMD_TRIGGER_SCAN_TO, trigger,
 894                               sizeof(*trigger));
 895         if (ret < 0) {
 896                 wl12xx_error("trigger scan to failed for hw scan");
 897                 goto out;
 898         }
 899
 900         wl12xx_dump(DEBUG_SCAN, "SCAN: ", params, sizeof(*params));
 901
 902         wl->scanning = true;
 903
 904         ret = wl12xx_cmd_send(wl, CMD_SCAN, params, sizeof(*params));
 905         if (ret < 0)
 906                 wl12xx_error("SCAN failed");
 907
 908         wl12xx_spi_mem_read(wl, wl->cmd_box_addr, params, sizeof(*params));
 909
 910         if (params->header.status != CMD_STATUS_SUCCESS) {
 911                 wl12xx_error("TEST command answer error: %d",
 912                              params->header.status);
 913                 wl->scanning = false;
 914                 ret = -EIO;
 915                 goto out;
 916         }
 917
 918 out:
 919         kfree(params);
 920         return ret;
 921
 922 }
 923
 924 static int wl12xx_op_hw_scan(struct ieee80211_hw *hw,
 925                              struct cfg80211_scan_request *req)
 926 {
 927         struct wl12xx *wl = hw->priv;
 928         int ret;
 929         u8 *ssid = NULL;
 930         size_t ssid_len = 0;
 931
 932         wl12xx_debug(DEBUG_MAC80211, "mac80211 hw scan");
 933
 934         if (req->n_ssids) {
 935                 ssid = req->ssids[0].ssid;
 936                 ssid_len = req->ssids[0].ssid_len;
 937         }
 938
 939         mutex_lock(&wl->mutex);
 940         ret = wl12xx_hw_scan(hw->priv, ssid, ssid_len, 1, 0, 13, 3);
 941         mutex_unlock(&wl->mutex);
 942
 943         return ret;
 944 }
 945
 946 static int wl12xx_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
 947 {
 948         struct wl12xx *wl = hw->priv;
 949         int ret;
 950
 951         ret = wl12xx_acx_rts_threshold(wl, (u16) value);
 952
 953         if (ret < 0)
 954                 wl12xx_warning("wl12xx_op_set_rts_threshold failed: %d", ret);
 955
 956         return ret;
 957 }
 958
 959 static void wl12xx_op_bss_info_changed(struct ieee80211_hw *hw,
 960                                        struct ieee80211_vif *vif,
 961                                        struct ieee80211_bss_conf *bss_conf,
 962                                        u32 changed)
 963 {
 964         enum wl12xx_cmd_ps_mode mode;
 965         struct wl12xx *wl = hw->priv;
 966         struct sk_buff *beacon;
 967         int ret;
 968
 969         wl12xx_debug(DEBUG_MAC80211, "mac80211 bss info changed");
 970
 971         mutex_lock(&wl->mutex);
 972
 973         if (changed & BSS_CHANGED_ASSOC) {
 974                 if (bss_conf->assoc) {
 975                         wl->aid = bss_conf->aid;
 976
 977                         ret = wl12xx_build_ps_poll(wl, wl->aid);
 978                         if (ret < 0)
 979                                 goto out;
 980
 981                         ret = wl12xx_acx_aid(wl, wl->aid);
 982                         if (ret < 0)
 983                                 goto out;
 984
 985                         /* If we want to go in PSM but we're not there yet */
 986                         if (wl->psm_requested && !wl->psm) {
 987                                 mode = STATION_POWER_SAVE_MODE;
 988                                 ret = wl12xx_ps_set_mode(wl, mode);
 989                                 if (ret < 0)
 990                                         goto out;
 991                         }
 992                 }
 993         }
 994         if (changed & BSS_CHANGED_ERP_SLOT) {
 995                 if (bss_conf->use_short_slot)
 996                         ret = wl12xx_acx_slot(wl, SLOT_TIME_SHORT);
 997                 else
 998                         ret = wl12xx_acx_slot(wl, SLOT_TIME_LONG);
 999                 if (ret < 0) {
1000                         wl12xx_warning("Set slot time failed %d", ret);
1001                         goto out;
1002                 }
1003         }
1004
1005         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1006                 if (bss_conf->use_short_preamble)
1007                         wl12xx_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1008                 else
1009                         wl12xx_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1010         }
1011
1012         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1013                 if (bss_conf->use_cts_prot)
1014                         ret = wl12xx_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1015                 else
1016                         ret = wl12xx_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1017                 if (ret < 0) {
1018                         wl12xx_warning("Set ctsprotect failed %d", ret);
1019                         goto out;
1020                 }
1021         }
1022
1023         if (changed & BSS_CHANGED_BSSID) {
1024                 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
1025
1026                 ret = wl12xx_build_null_data(wl);
1027                 if (ret < 0)
1028                         goto out;
1029
1030                 if (wl->bss_type != BSS_TYPE_IBSS) {
1031                         ret = wl12xx_cmd_join(wl, wl->bss_type, 5, 100, 1);
1032                         if (ret < 0)
1033                                 goto out;
1034                 }
1035         }
1036
1037         if (changed & BSS_CHANGED_BEACON) {
1038                 beacon = ieee80211_beacon_get(hw, vif);
1039                 ret = wl12xx_cmd_template_set(wl, CMD_BEACON, beacon->data,
1040                                               beacon->len);
1041
1042                 if (ret < 0) {
1043                         dev_kfree_skb(beacon);
1044                         goto out;
1045                 }
1046
1047                 ret = wl12xx_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
1048                                               beacon->len);
1049
1050                 dev_kfree_skb(beacon);
1051
1052                 if (ret < 0)
1053                         goto out;
1054
1055                 ret = wl12xx_cmd_join(wl, wl->bss_type, 1, 100, 0);
1056
1057                 if (ret < 0)
1058                         goto out;
1059         }
1060
1061 out:
1062         mutex_unlock(&wl->mutex);
1063 }
1064
1065
1066 /* can't be const, mac80211 writes to this */
1067 static struct ieee80211_rate wl12xx_rates[] = {
1068         { .bitrate = 10,
1069           .hw_value = 0x1,
1070           .hw_value_short = 0x1, },
1071         { .bitrate = 20,
1072           .hw_value = 0x2,
1073           .hw_value_short = 0x2,
1074           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1075         { .bitrate = 55,
1076           .hw_value = 0x4,
1077           .hw_value_short = 0x4,
1078           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1079         { .bitrate = 110,
1080           .hw_value = 0x20,
1081           .hw_value_short = 0x20,
1082           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1083         { .bitrate = 60,
1084           .hw_value = 0x8,
1085           .hw_value_short = 0x8, },
1086         { .bitrate = 90,
1087           .hw_value = 0x10,
1088           .hw_value_short = 0x10, },
1089         { .bitrate = 120,
1090           .hw_value = 0x40,
1091           .hw_value_short = 0x40, },
1092         { .bitrate = 180,
1093           .hw_value = 0x80,
1094           .hw_value_short = 0x80, },
1095         { .bitrate = 240,
1096           .hw_value = 0x200,
1097           .hw_value_short = 0x200, },
1098         { .bitrate = 360,
1099          .hw_value = 0x400,
1100          .hw_value_short = 0x400, },
1101         { .bitrate = 480,
1102           .hw_value = 0x800,
1103           .hw_value_short = 0x800, },
1104         { .bitrate = 540,
1105           .hw_value = 0x1000,
1106           .hw_value_short = 0x1000, },
1107 };
1108
1109 /* can't be const, mac80211 writes to this */
1110 static struct ieee80211_channel wl12xx_channels[] = {
1111         { .hw_value = 1, .center_freq = 2412},
1112         { .hw_value = 2, .center_freq = 2417},
1113         { .hw_value = 3, .center_freq = 2422},
1114         { .hw_value = 4, .center_freq = 2427},
1115         { .hw_value = 5, .center_freq = 2432},
1116         { .hw_value = 6, .center_freq = 2437},
1117         { .hw_value = 7, .center_freq = 2442},
1118         { .hw_value = 8, .center_freq = 2447},
1119         { .hw_value = 9, .center_freq = 2452},
1120         { .hw_value = 10, .center_freq = 2457},
1121         { .hw_value = 11, .center_freq = 2462},
1122         { .hw_value = 12, .center_freq = 2467},
1123         { .hw_value = 13, .center_freq = 2472},
1124 };
1125
1126 /* can't be const, mac80211 writes to this */
1127 static struct ieee80211_supported_band wl12xx_band_2ghz = {
1128         .channels = wl12xx_channels,
1129         .n_channels = ARRAY_SIZE(wl12xx_channels),
1130         .bitrates = wl12xx_rates,
1131         .n_bitrates = ARRAY_SIZE(wl12xx_rates),
1132 };
1133
1134 static const struct ieee80211_ops wl12xx_ops = {
1135         .start = wl12xx_op_start,
1136         .stop = wl12xx_op_stop,
1137         .add_interface = wl12xx_op_add_interface,
1138         .remove_interface = wl12xx_op_remove_interface,
1139         .config = wl12xx_op_config,
1140         .configure_filter = wl12xx_op_configure_filter,
1141         .tx = wl12xx_op_tx,
1142         .set_key = wl12xx_op_set_key,
1143         .hw_scan = wl12xx_op_hw_scan,
1144         .bss_info_changed = wl12xx_op_bss_info_changed,
1145         .set_rts_threshold = wl12xx_op_set_rts_threshold,
1146 };
1147
1148 static int wl12xx_register_hw(struct wl12xx *wl)
1149 {
1150         int ret;
1151
1152         if (wl->mac80211_registered)
1153                 return 0;
1154
1155         SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1156
1157         ret = ieee80211_register_hw(wl->hw);
1158         if (ret < 0) {
1159                 wl12xx_error("unable to register mac80211 hw: %d", ret);
1160                 return ret;
1161         }
1162
1163         wl->mac80211_registered = true;
1164
1165         wl12xx_notice("loaded");
1166
1167         return 0;
1168 }
1169
1170 static int wl12xx_init_ieee80211(struct wl12xx *wl)
1171 {
1172         /* The tx descriptor buffer and the TKIP space */
1173         wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
1174                 + WL12XX_TKIP_IV_SPACE;
1175
1176         /* unit us */
1177         /* FIXME: find a proper value */
1178         wl->hw->channel_change_time = 10000;
1179
1180         wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1181                 IEEE80211_HW_NOISE_DBM;
1182
1183         wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1184         wl->hw->wiphy->max_scan_ssids = 1;
1185         wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl12xx_band_2ghz;
1186
1187         SET_IEEE80211_DEV(wl->hw, &wl->spi->dev);
1188
1189         return 0;
1190 }
1191
1192 #define WL12XX_DEFAULT_CHANNEL 1
1193 static int __devinit wl12xx_probe(struct spi_device *spi)
1194 {
1195         struct wl12xx_platform_data *pdata;
1196         struct ieee80211_hw *hw;
1197         struct wl12xx *wl;
1198         int ret, i;
1199         static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1200
1201         pdata = spi->dev.platform_data;
1202         if (!pdata) {
1203                 wl12xx_error("no platform data");
1204                 return -ENODEV;
1205         }
1206
1207         hw = ieee80211_alloc_hw(sizeof(*wl), &wl12xx_ops);
1208         if (!hw) {
1209                 wl12xx_error("could not alloc ieee80211_hw");
1210                 return -ENOMEM;
1211         }
1212
1213         wl = hw->priv;
1214         memset(wl, 0, sizeof(*wl));
1215
1216         wl->hw = hw;
1217         dev_set_drvdata(&spi->dev, wl);
1218         wl->spi = spi;
1219
1220         wl->data_in_count = 0;
1221
1222         skb_queue_head_init(&wl->tx_queue);
1223
1224         INIT_WORK(&wl->tx_work, wl12xx_tx_work);
1225         INIT_WORK(&wl->filter_work, wl12xx_filter_work);
1226         wl->channel = WL12XX_DEFAULT_CHANNEL;
1227         wl->scanning = false;
1228         wl->default_key = 0;
1229         wl->listen_int = 1;
1230         wl->rx_counter = 0;
1231         wl->rx_handled = 0;
1232         wl->rx_current_buffer = 0;
1233         wl->rx_last_id = 0;
1234         wl->rx_config = WL12XX_DEFAULT_RX_CONFIG;
1235         wl->rx_filter = WL12XX_DEFAULT_RX_FILTER;
1236         wl->elp = false;
1237         wl->psm = 0;
1238         wl->psm_requested = false;
1239         wl->tx_queue_stopped = false;
1240         wl->power_level = WL12XX_DEFAULT_POWER_LEVEL;
1241
1242         /* We use the default power on sleep time until we know which chip
1243          * we're using */
1244         wl->chip.power_on_sleep = WL12XX_DEFAULT_POWER_ON_SLEEP;
1245
1246         for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1247                 wl->tx_frames[i] = NULL;
1248
1249         wl->next_tx_complete = 0;
1250
1251         /*
1252          * In case our MAC address is not correctly set,
1253          * we use a random but Nokia MAC.
1254          */
1255         memcpy(wl->mac_addr, nokia_oui, 3);
1256         get_random_bytes(wl->mac_addr + 3, 3);
1257
1258         wl->state = WL12XX_STATE_OFF;
1259         mutex_init(&wl->mutex);
1260
1261         wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
1262         wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
1263
1264         wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1265         if (!wl->rx_descriptor) {
1266                 wl12xx_error("could not allocate memory for rx descriptor");
1267                 ret = -ENOMEM;
1268                 goto out_free;
1269         }
1270
1271         /* This is the only SPI value that we need to set here, the rest
1272          * comes from the board-peripherals file */
1273         spi->bits_per_word = 32;
1274
1275         ret = spi_setup(spi);
1276         if (ret < 0) {
1277                 wl12xx_error("spi_setup failed");
1278                 goto out_free;
1279         }
1280
1281         wl->set_power = pdata->set_power;
1282         if (!wl->set_power) {
1283                 wl12xx_error("set power function missing in platform data");
1284                 ret = -ENODEV;
1285                 goto out_free;
1286         }
1287
1288         wl->irq = spi->irq;
1289         if (wl->irq < 0) {
1290                 wl12xx_error("irq missing in platform data");
1291                 ret = -ENODEV;
1292                 goto out_free;
1293         }
1294
1295         ret = request_irq(wl->irq, wl12xx_irq, 0, DRIVER_NAME, wl);
1296         if (ret < 0) {
1297                 wl12xx_error("request_irq() failed: %d", ret);
1298                 goto out_free;
1299         }
1300
1301         set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING);
1302
1303         disable_irq(wl->irq);
1304
1305         ret = wl12xx_init_ieee80211(wl);
1306         if (ret)
1307                 goto out_irq;
1308
1309         ret = wl12xx_register_hw(wl);
1310         if (ret)
1311                 goto out_irq;
1312
1313         wl12xx_debugfs_init(wl);
1314
1315         wl12xx_notice("initialized");
1316
1317         return 0;
1318
1319  out_irq:
1320         free_irq(wl->irq, wl);
1321
1322  out_free:
1323         kfree(wl->rx_descriptor);
1324         wl->rx_descriptor = NULL;
1325
1326         ieee80211_free_hw(hw);
1327
1328         return ret;
1329 }
1330
1331 static int __devexit wl12xx_remove(struct spi_device *spi)
1332 {
1333         struct wl12xx *wl = dev_get_drvdata(&spi->dev);
1334
1335         ieee80211_unregister_hw(wl->hw);
1336
1337         wl12xx_debugfs_exit(wl);
1338
1339         free_irq(wl->irq, wl);
1340         kfree(wl->target_mem_map);
1341         kfree(wl->data_path);
1342         kfree(wl->fw);
1343         wl->fw = NULL;
1344         kfree(wl->nvs);
1345         wl->nvs = NULL;
1346
1347         kfree(wl->rx_descriptor);
1348         wl->rx_descriptor = NULL;
1349
1350         ieee80211_free_hw(wl->hw);
1351
1352         return 0;
1353 }
1354
1355
1356 static struct spi_driver wl12xx_spi_driver = {
1357         .driver = {
1358                 .name           = "wl12xx",
1359                 .bus            = &spi_bus_type,
1360                 .owner          = THIS_MODULE,
1361         },
1362
1363         .probe          = wl12xx_probe,
1364         .remove         = __devexit_p(wl12xx_remove),
1365 };
1366
1367 static int __init wl12xx_init(void)
1368 {
1369         int ret;
1370
1371         ret = spi_register_driver(&wl12xx_spi_driver);
1372         if (ret < 0) {
1373                 wl12xx_error("failed to register spi driver: %d", ret);
1374                 goto out;
1375         }
1376
1377 out:
1378         return ret;
1379 }
1380
1381 static void __exit wl12xx_exit(void)
1382 {
1383         spi_unregister_driver(&wl12xx_spi_driver);
1384
1385         wl12xx_notice("unloaded");
1386 }
1387
1388 module_init(wl12xx_init);
1389 module_exit(wl12xx_exit);
1390
1391 MODULE_LICENSE("GPL");
1392 MODULE_AUTHOR("Kalle Valo <Kalle.Valo@nokia.com>, "
1393                 "Luciano Coelho <luciano.coelho@nokia.com>");