SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/net/wireless/wl12xx/wl1251_main.c

   1 /*
   2  * This file is part of wl1251
   3  *
   4  * Copyright (C) 2008-2009 Nokia Corporation
   5  *
   6  * Contact: Kalle Valo <kalle.valo@nokia.com>
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License
  10  * version 2 as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  20  * 02110-1301 USA
  21  *
  22  */
  23
  24 #include <linux/module.h>
  25 #include <linux/interrupt.h>
  26 #include <linux/firmware.h>
  27 #include <linux/delay.h>
  28 #include <linux/irq.h>
  29 #include <linux/spi/spi.h>
  30 #include <linux/crc32.h>
  31 #include <linux/etherdevice.h>
  32 #include <linux/spi/wl12xx.h>
  33
  34 #include "wl1251.h"
  35 #include "wl12xx_80211.h"
  36 #include "reg.h"
  37 #include "wl1251_ops.h"
  38 #include "wl1251_io.h"
  39 #include "wl1251_spi.h"
  40 #include "wl1251_event.h"
  41 #include "wl1251_tx.h"
  42 #include "wl1251_rx.h"
  43 #include "wl1251_ps.h"
  44 #include "wl1251_init.h"
  45 #include "wl1251_debugfs.h"
  46
  47 static void wl1251_disable_interrupts(struct wl1251 *wl)
  48 {
  49         disable_irq(wl->irq);
  50 }
  51
  52 static void wl1251_power_off(struct wl1251 *wl)
  53 {
  54         wl->set_power(false);
  55 }
  56
  57 static void wl1251_power_on(struct wl1251 *wl)
  58 {
  59         wl->set_power(true);
  60 }
  61
  62 static irqreturn_t wl1251_irq(int irq, void *cookie)
  63 {
  64         struct wl1251 *wl;
  65
  66         wl1251_debug(DEBUG_IRQ, "IRQ");
  67
  68         wl = cookie;
  69
  70         schedule_work(&wl->irq_work);
  71
  72         return IRQ_HANDLED;
  73 }
  74
  75 static int wl1251_fetch_firmware(struct wl1251 *wl)
  76 {
  77         const struct firmware *fw;
  78         struct device *dev = wiphy_dev(wl->hw->wiphy);
  79         int ret;
  80
  81         ret = request_firmware(&fw, wl->chip.fw_filename, dev);
  82
  83         if (ret < 0) {
  84                 wl1251_error("could not get firmware: %d", ret);
  85                 return ret;
  86         }
  87
  88         if (fw->size % 4) {
  89                 wl1251_error("firmware size is not multiple of 32 bits: %zu",
  90                              fw->size);
  91                 ret = -EILSEQ;
  92                 goto out;
  93         }
  94
  95         wl->fw_len = fw->size;
  96         wl->fw = kmalloc(wl->fw_len, GFP_KERNEL);
  97
  98         if (!wl->fw) {
  99                 wl1251_error("could not allocate memory for the firmware");
 100                 ret = -ENOMEM;
 101                 goto out;
 102         }
 103
 104         memcpy(wl->fw, fw->data, wl->fw_len);
 105
 106         ret = 0;
 107
 108 out:
 109         release_firmware(fw);
 110
 111         return ret;
 112 }
 113
 114 static int wl1251_fetch_nvs(struct wl1251 *wl)
 115 {
 116         const struct firmware *fw;
 117         struct device *dev = wiphy_dev(wl->hw->wiphy);
 118         int ret;
 119
 120         ret = request_firmware(&fw, wl->chip.nvs_filename, dev);
 121
 122         if (ret < 0) {
 123                 wl1251_error("could not get nvs file: %d", ret);
 124                 return ret;
 125         }
 126
 127         if (fw->size % 4) {
 128                 wl1251_error("nvs size is not multiple of 32 bits: %zu",
 129                              fw->size);
 130                 ret = -EILSEQ;
 131                 goto out;
 132         }
 133
 134         wl->nvs_len = fw->size;
 135         wl->nvs = kmalloc(wl->nvs_len, GFP_KERNEL);
 136
 137         if (!wl->nvs) {
 138                 wl1251_error("could not allocate memory for the nvs file");
 139                 ret = -ENOMEM;
 140                 goto out;
 141         }
 142
 143         memcpy(wl->nvs, fw->data, wl->nvs_len);
 144
 145         ret = 0;
 146
 147 out:
 148         release_firmware(fw);
 149
 150         return ret;
 151 }
 152
 153 static void wl1251_fw_wakeup(struct wl1251 *wl)
 154 {
 155         u32 elp_reg;
 156
 157         elp_reg = ELPCTRL_WAKE_UP;
 158         wl1251_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
 159         elp_reg = wl1251_read32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR);
 160
 161         if (!(elp_reg & ELPCTRL_WLAN_READY))
 162                 wl1251_warning("WLAN not ready");
 163 }
 164
 165 static int wl1251_chip_wakeup(struct wl1251 *wl)
 166 {
 167         int ret = 0;
 168
 169         wl1251_power_on(wl);
 170         msleep(wl->chip.power_on_sleep);
 171         wl->if_ops->reset(wl);
 172
 173         /* We don't need a real memory partition here, because we only want
 174          * to use the registers at this point. */
 175         wl1251_set_partition(wl,
 176                              0x00000000,
 177                              0x00000000,
 178                              REGISTERS_BASE,
 179                              REGISTERS_DOWN_SIZE);
 180
 181         /* ELP module wake up */
 182         wl1251_fw_wakeup(wl);
 183
 184         /* whal_FwCtrl_BootSm() */
 185
 186         /* 0. read chip id from CHIP_ID */
 187         wl->chip.id = wl1251_reg_read32(wl, CHIP_ID_B);
 188
 189         /* 1. check if chip id is valid */
 190
 191         switch (wl->chip.id) {
 192         case CHIP_ID_1251_PG12:
 193                 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG12)",
 194                              wl->chip.id);
 195
 196                 wl1251_setup(wl);
 197
 198                 break;
 199         case CHIP_ID_1251_PG10:
 200         case CHIP_ID_1251_PG11:
 201         default:
 202                 wl1251_error("unsupported chip id: 0x%x", wl->chip.id);
 203                 ret = -ENODEV;
 204                 goto out;
 205         }
 206
 207         if (wl->fw == NULL) {
 208                 ret = wl1251_fetch_firmware(wl);
 209                 if (ret < 0)
 210                         goto out;
 211         }
 212
 213         /* No NVS from netlink, try to get it from the filesystem */
 214         if (wl->nvs == NULL) {
 215                 ret = wl1251_fetch_nvs(wl);
 216                 if (ret < 0)
 217                         goto out;
 218         }
 219
 220 out:
 221         return ret;
 222 }
 223
 224 static void wl1251_filter_work(struct work_struct *work)
 225 {
 226         struct wl1251 *wl =
 227                 container_of(work, struct wl1251, filter_work);
 228         int ret;
 229
 230         mutex_lock(&wl->mutex);
 231
 232         if (wl->state == WL1251_STATE_OFF)
 233                 goto out;
 234
 235         ret = wl1251_ps_elp_wakeup(wl);
 236         if (ret < 0)
 237                 goto out;
 238
 239         /* FIXME: replace the magic numbers with proper definitions */
 240         ret = wl->chip.op_cmd_join(wl, wl->bss_type, 1, 100, 0);
 241         if (ret < 0)
 242                 goto out_sleep;
 243
 244 out_sleep:
 245         wl1251_ps_elp_sleep(wl);
 246
 247 out:
 248         mutex_unlock(&wl->mutex);
 249 }
 250
 251 static int wl1251_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 252 {
 253         struct wl1251 *wl = hw->priv;
 254
 255         skb_queue_tail(&wl->tx_queue, skb);
 256
 257         /*
 258          * The chip specific setup must run before the first TX packet -
 259          * before that, the tx_work will not be initialized!
 260          */
 261
 262         schedule_work(&wl->tx_work);
 263
 264         /*
 265          * The workqueue is slow to process the tx_queue and we need stop
 266          * the queue here, otherwise the queue will get too long.
 267          */
 268         if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_MAX_LENGTH) {
 269                 ieee80211_stop_queues(wl->hw);
 270
 271                 /*
 272                  * FIXME: this is racy, the variable is not properly
 273                  * protected. Maybe fix this by removing the stupid
 274                  * variable altogether and checking the real queue state?
 275                  */
 276                 wl->tx_queue_stopped = true;
 277         }
 278
 279         return NETDEV_TX_OK;
 280 }
 281
 282 static int wl1251_op_start(struct ieee80211_hw *hw)
 283 {
 284         struct wl1251 *wl = hw->priv;
 285         int ret = 0;
 286
 287         wl1251_debug(DEBUG_MAC80211, "mac80211 start");
 288
 289         mutex_lock(&wl->mutex);
 290
 291         if (wl->state != WL1251_STATE_OFF) {
 292                 wl1251_error("cannot start because not in off state: %d",
 293                              wl->state);
 294                 ret = -EBUSY;
 295                 goto out;
 296         }
 297
 298         ret = wl1251_chip_wakeup(wl);
 299         if (ret < 0)
 300                 goto out;
 301
 302         ret = wl->chip.op_boot(wl);
 303         if (ret < 0)
 304                 goto out;
 305
 306         ret = wl->chip.op_hw_init(wl);
 307         if (ret < 0)
 308                 goto out;
 309
 310         ret = wl1251_acx_station_id(wl);
 311         if (ret < 0)
 312                 goto out;
 313
 314         wl->state = WL1251_STATE_ON;
 315
 316         wl1251_info("firmware booted (%s)", wl->chip.fw_ver);
 317
 318 out:
 319         if (ret < 0)
 320                 wl1251_power_off(wl);
 321
 322         mutex_unlock(&wl->mutex);
 323
 324         return ret;
 325 }
 326
 327 static void wl1251_op_stop(struct ieee80211_hw *hw)
 328 {
 329         struct wl1251 *wl = hw->priv;
 330
 331         wl1251_info("down");
 332
 333         wl1251_debug(DEBUG_MAC80211, "mac80211 stop");
 334
 335         mutex_lock(&wl->mutex);
 336
 337         WARN_ON(wl->state != WL1251_STATE_ON);
 338
 339         if (wl->scanning) {
 340                 mutex_unlock(&wl->mutex);
 341                 ieee80211_scan_completed(wl->hw, true);
 342                 mutex_lock(&wl->mutex);
 343                 wl->scanning = false;
 344         }
 345
 346         wl->state = WL1251_STATE_OFF;
 347
 348         wl1251_disable_interrupts(wl);
 349
 350         mutex_unlock(&wl->mutex);
 351
 352         cancel_work_sync(&wl->irq_work);
 353         cancel_work_sync(&wl->tx_work);
 354         cancel_work_sync(&wl->filter_work);
 355
 356         mutex_lock(&wl->mutex);
 357
 358         /* let's notify MAC80211 about the remaining pending TX frames */
 359         wl->chip.op_tx_flush(wl);
 360         wl1251_power_off(wl);
 361
 362         memset(wl->bssid, 0, ETH_ALEN);
 363         wl->listen_int = 1;
 364         wl->bss_type = MAX_BSS_TYPE;
 365
 366         wl->data_in_count = 0;
 367         wl->rx_counter = 0;
 368         wl->rx_handled = 0;
 369         wl->rx_current_buffer = 0;
 370         wl->rx_last_id = 0;
 371         wl->next_tx_complete = 0;
 372         wl->elp = false;
 373         wl->psm = 0;
 374         wl->tx_queue_stopped = false;
 375         wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
 376
 377         wl1251_debugfs_reset(wl);
 378
 379         mutex_unlock(&wl->mutex);
 380 }
 381
 382 static int wl1251_op_add_interface(struct ieee80211_hw *hw,
 383                                    struct ieee80211_if_init_conf *conf)
 384 {
 385         struct wl1251 *wl = hw->priv;
 386         int ret = 0;
 387
 388         wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
 389                      conf->type, conf->mac_addr);
 390
 391         mutex_lock(&wl->mutex);
 392
 393         switch (conf->type) {
 394         case NL80211_IFTYPE_STATION:
 395                 wl->bss_type = BSS_TYPE_STA_BSS;
 396                 break;
 397         case NL80211_IFTYPE_ADHOC:
 398                 wl->bss_type = BSS_TYPE_IBSS;
 399                 break;
 400         default:
 401                 ret = -EOPNOTSUPP;
 402                 goto out;
 403         }
 404
 405         if (memcmp(wl->mac_addr, conf->mac_addr, ETH_ALEN)) {
 406                 memcpy(wl->mac_addr, conf->mac_addr, ETH_ALEN);
 407                 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
 408                 ret = wl1251_acx_station_id(wl);
 409                 if (ret < 0)
 410                         goto out;
 411         }
 412
 413 out:
 414         mutex_unlock(&wl->mutex);
 415         return ret;
 416 }
 417
 418 static void wl1251_op_remove_interface(struct ieee80211_hw *hw,
 419                                          struct ieee80211_if_init_conf *conf)
 420 {
 421         wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface");
 422 }
 423
 424 static int wl1251_build_null_data(struct wl1251 *wl)
 425 {
 426         struct wl12xx_null_data_template template;
 427
 428         if (!is_zero_ether_addr(wl->bssid)) {
 429                 memcpy(template.header.da, wl->bssid, ETH_ALEN);
 430                 memcpy(template.header.bssid, wl->bssid, ETH_ALEN);
 431         } else {
 432                 memset(template.header.da, 0xff, ETH_ALEN);
 433                 memset(template.header.bssid, 0xff, ETH_ALEN);
 434         }
 435
 436         memcpy(template.header.sa, wl->mac_addr, ETH_ALEN);
 437         template.header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_DATA |
 438                                                 IEEE80211_STYPE_NULLFUNC);
 439
 440         return wl1251_cmd_template_set(wl, CMD_NULL_DATA, &template,
 441                                        sizeof(template));
 442
 443 }
 444
 445 static int wl1251_build_ps_poll(struct wl1251 *wl, u16 aid)
 446 {
 447         struct wl12xx_ps_poll_template template;
 448
 449         memcpy(template.bssid, wl->bssid, ETH_ALEN);
 450         memcpy(template.ta, wl->mac_addr, ETH_ALEN);
 451         template.aid = aid;
 452         template.fc = cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
 453
 454         return wl1251_cmd_template_set(wl, CMD_PS_POLL, &template,
 455                                        sizeof(template));
 456
 457 }
 458
 459 static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed)
 460 {
 461         struct wl1251 *wl = hw->priv;
 462         struct ieee80211_conf *conf = &hw->conf;
 463         int channel, ret = 0;
 464
 465         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
 466
 467         wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
 468                      channel,
 469                      conf->flags & IEEE80211_CONF_PS ? "on" : "off",
 470                      conf->power_level);
 471
 472         mutex_lock(&wl->mutex);
 473
 474         ret = wl1251_ps_elp_wakeup(wl);
 475         if (ret < 0)
 476                 goto out;
 477
 478         if (channel != wl->channel) {
 479                 /* FIXME: use beacon interval provided by mac80211 */
 480                 ret = wl->chip.op_cmd_join(wl, wl->bss_type, 1, 100, 0);
 481                 if (ret < 0)
 482                         goto out_sleep;
 483
 484                 wl->channel = channel;
 485         }
 486
 487         ret = wl1251_build_null_data(wl);
 488         if (ret < 0)
 489                 goto out_sleep;
 490
 491         if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
 492                 wl1251_debug(DEBUG_PSM, "psm enabled");
 493
 494                 wl->psm_requested = true;
 495
 496                 /*
 497                  * We enter PSM only if we're already associated.
 498                  * If we're not, we'll enter it when joining an SSID,
 499                  * through the bss_info_changed() hook.
 500                  */
 501                 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
 502         } else if (!(conf->flags & IEEE80211_CONF_PS) &&
 503                    wl->psm_requested) {
 504                 wl1251_debug(DEBUG_PSM, "psm disabled");
 505
 506                 wl->psm_requested = false;
 507
 508                 if (wl->psm)
 509                         ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
 510         }
 511
 512         if (conf->power_level != wl->power_level) {
 513                 ret = wl1251_acx_tx_power(wl, conf->power_level);
 514                 if (ret < 0)
 515                         goto out;
 516
 517                 wl->power_level = conf->power_level;
 518         }
 519
 520 out_sleep:
 521         wl1251_ps_elp_sleep(wl);
 522
 523 out:
 524         mutex_unlock(&wl->mutex);
 525
 526         return ret;
 527 }
 528
 529 #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
 530                                   FIF_ALLMULTI | \
 531                                   FIF_FCSFAIL | \
 532                                   FIF_BCN_PRBRESP_PROMISC | \
 533                                   FIF_CONTROL | \
 534                                   FIF_OTHER_BSS)
 535
 536 static void wl1251_op_configure_filter(struct ieee80211_hw *hw,
 537                                        unsigned int changed,
 538                                        unsigned int *total,
 539                                        int mc_count,
 540                                        struct dev_addr_list *mc_list)
 541 {
 542         struct wl1251 *wl = hw->priv;
 543
 544         wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter");
 545
 546         *total &= WL1251_SUPPORTED_FILTERS;
 547         changed &= WL1251_SUPPORTED_FILTERS;
 548
 549         if (changed == 0)
 550                 /* no filters which we support changed */
 551                 return;
 552
 553         /* FIXME: wl->rx_config and wl->rx_filter are not protected */
 554
 555         wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
 556         wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
 557
 558         if (*total & FIF_PROMISC_IN_BSS) {
 559                 wl->rx_config |= CFG_BSSID_FILTER_EN;
 560                 wl->rx_config |= CFG_RX_ALL_GOOD;
 561         }
 562         if (*total & FIF_ALLMULTI)
 563                 /*
 564                  * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
 565                  * all multicast frames
 566                  */
 567                 wl->rx_config &= ~CFG_MC_FILTER_EN;
 568         if (*total & FIF_FCSFAIL)
 569                 wl->rx_filter |= CFG_RX_FCS_ERROR;
 570         if (*total & FIF_BCN_PRBRESP_PROMISC) {
 571                 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
 572                 wl->rx_config &= ~CFG_SSID_FILTER_EN;
 573         }
 574         if (*total & FIF_CONTROL)
 575                 wl->rx_filter |= CFG_RX_CTL_EN;
 576         if (*total & FIF_OTHER_BSS)
 577                 wl->rx_filter &= ~CFG_BSSID_FILTER_EN;
 578
 579         /*
 580          * FIXME: workqueues need to be properly cancelled on stop(), for
 581          * now let's just disable changing the filter settings. They will
 582          * be updated any on config().
 583          */
 584         /* schedule_work(&wl->filter_work); */
 585 }
 586
 587 /* HW encryption */
 588 static int wl1251_set_key_type(struct wl1251 *wl,
 589                                struct wl1251_cmd_set_keys *key,
 590                                enum set_key_cmd cmd,
 591                                struct ieee80211_key_conf *mac80211_key,
 592                                const u8 *addr)
 593 {
 594         switch (mac80211_key->alg) {
 595         case ALG_WEP:
 596                 if (is_broadcast_ether_addr(addr))
 597                         key->key_type = KEY_WEP_DEFAULT;
 598                 else
 599                         key->key_type = KEY_WEP_ADDR;
 600
 601                 mac80211_key->hw_key_idx = mac80211_key->keyidx;
 602                 break;
 603         case ALG_TKIP:
 604                 if (is_broadcast_ether_addr(addr))
 605                         key->key_type = KEY_TKIP_MIC_GROUP;
 606                 else
 607                         key->key_type = KEY_TKIP_MIC_PAIRWISE;
 608
 609                 mac80211_key->hw_key_idx = mac80211_key->keyidx;
 610                 break;
 611         case ALG_CCMP:
 612                 if (is_broadcast_ether_addr(addr))
 613                         key->key_type = KEY_AES_GROUP;
 614                 else
 615                         key->key_type = KEY_AES_PAIRWISE;
 616                 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
 617                 break;
 618         default:
 619                 wl1251_error("Unknown key algo 0x%x", mac80211_key->alg);
 620                 return -EOPNOTSUPP;
 621         }
 622
 623         return 0;
 624 }
 625
 626 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 627                              struct ieee80211_vif *vif,
 628                              struct ieee80211_sta *sta,
 629                              struct ieee80211_key_conf *key)
 630 {
 631         struct wl1251 *wl = hw->priv;
 632         struct wl1251_cmd_set_keys *wl_cmd;
 633         const u8 *addr;
 634         int ret;
 635
 636         static const u8 bcast_addr[ETH_ALEN] =
 637                 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 638
 639         wl1251_debug(DEBUG_MAC80211, "mac80211 set key");
 640
 641         wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
 642         if (!wl_cmd) {
 643                 ret = -ENOMEM;
 644                 goto out;
 645         }
 646
 647         addr = sta ? sta->addr : bcast_addr;
 648
 649         wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
 650         wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
 651         wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
 652                      key->alg, key->keyidx, key->keylen, key->flags);
 653         wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
 654
 655         if (is_zero_ether_addr(addr)) {
 656                 /* We dont support TX only encryption */
 657                 ret = -EOPNOTSUPP;
 658                 goto out;
 659         }
 660
 661         mutex_lock(&wl->mutex);
 662
 663         ret = wl1251_ps_elp_wakeup(wl);
 664         if (ret < 0)
 665                 goto out_unlock;
 666
 667         switch (cmd) {
 668         case SET_KEY:
 669                 wl_cmd->key_action = KEY_ADD_OR_REPLACE;
 670                 break;
 671         case DISABLE_KEY:
 672                 wl_cmd->key_action = KEY_REMOVE;
 673                 break;
 674         default:
 675                 wl1251_error("Unsupported key cmd 0x%x", cmd);
 676                 break;
 677         }
 678
 679         ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr);
 680         if (ret < 0) {
 681                 wl1251_error("Set KEY type failed");
 682                 goto out_sleep;
 683         }
 684
 685         if (wl_cmd->key_type != KEY_WEP_DEFAULT)
 686                 memcpy(wl_cmd->addr, addr, ETH_ALEN);
 687
 688         if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
 689             (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
 690                 /*
 691                  * We get the key in the following form:
 692                  * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
 693                  * but the target is expecting:
 694                  * TKIP - RX MIC - TX MIC
 695                  */
 696                 memcpy(wl_cmd->key, key->key, 16);
 697                 memcpy(wl_cmd->key + 16, key->key + 24, 8);
 698                 memcpy(wl_cmd->key + 24, key->key + 16, 8);
 699
 700         } else {
 701                 memcpy(wl_cmd->key, key->key, key->keylen);
 702         }
 703         wl_cmd->key_size = key->keylen;
 704
 705         wl_cmd->id = key->keyidx;
 706         wl_cmd->ssid_profile = 0;
 707
 708         wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
 709
 710         ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
 711         if (ret < 0) {
 712                 wl1251_warning("could not set keys");
 713                 goto out_sleep;
 714         }
 715
 716 out_sleep:
 717         wl1251_ps_elp_sleep(wl);
 718
 719 out_unlock:
 720         mutex_unlock(&wl->mutex);
 721
 722 out:
 723         kfree(wl_cmd);
 724
 725         return ret;
 726 }
 727
 728 static int wl1251_build_basic_rates(char *rates)
 729 {
 730         u8 index = 0;
 731
 732         rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_1MB;
 733         rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_2MB;
 734         rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_5MB;
 735         rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_11MB;
 736
 737         return index;
 738 }
 739
 740 static int wl1251_build_extended_rates(char *rates)
 741 {
 742         u8 index = 0;
 743
 744         rates[index++] = IEEE80211_OFDM_RATE_6MB;
 745         rates[index++] = IEEE80211_OFDM_RATE_9MB;
 746         rates[index++] = IEEE80211_OFDM_RATE_12MB;
 747         rates[index++] = IEEE80211_OFDM_RATE_18MB;
 748         rates[index++] = IEEE80211_OFDM_RATE_24MB;
 749         rates[index++] = IEEE80211_OFDM_RATE_36MB;
 750         rates[index++] = IEEE80211_OFDM_RATE_48MB;
 751         rates[index++] = IEEE80211_OFDM_RATE_54MB;
 752
 753         return index;
 754 }
 755
 756
 757 static int wl1251_build_probe_req(struct wl1251 *wl, u8 *ssid, size_t ssid_len)
 758 {
 759         struct wl12xx_probe_req_template template;
 760         struct wl12xx_ie_rates *rates;
 761         char *ptr;
 762         u16 size;
 763
 764         ptr = (char *)&template;
 765         size = sizeof(struct ieee80211_header);
 766
 767         memset(template.header.da, 0xff, ETH_ALEN);
 768         memset(template.header.bssid, 0xff, ETH_ALEN);
 769         memcpy(template.header.sa, wl->mac_addr, ETH_ALEN);
 770         template.header.frame_ctl = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
 771
 772         /* IEs */
 773         /* SSID */
 774         template.ssid.header.id = WLAN_EID_SSID;
 775         template.ssid.header.len = ssid_len;
 776         if (ssid_len && ssid)
 777                 memcpy(template.ssid.ssid, ssid, ssid_len);
 778         size += sizeof(struct wl12xx_ie_header) + ssid_len;
 779         ptr += size;
 780
 781         /* Basic Rates */
 782         rates = (struct wl12xx_ie_rates *)ptr;
 783         rates->header.id = WLAN_EID_SUPP_RATES;
 784         rates->header.len = wl1251_build_basic_rates(rates->rates);
 785         size += sizeof(struct wl12xx_ie_header) + rates->header.len;
 786         ptr += sizeof(struct wl12xx_ie_header) + rates->header.len;
 787
 788         /* Extended rates */
 789         rates = (struct wl12xx_ie_rates *)ptr;
 790         rates->header.id = WLAN_EID_EXT_SUPP_RATES;
 791         rates->header.len = wl1251_build_extended_rates(rates->rates);
 792         size += sizeof(struct wl12xx_ie_header) + rates->header.len;
 793
 794         wl1251_dump(DEBUG_SCAN, "PROBE REQ: ", &template, size);
 795
 796         return wl1251_cmd_template_set(wl, CMD_PROBE_REQ, &template,
 797                                       size);
 798 }
 799
 800 static int wl1251_hw_scan(struct wl1251 *wl, u8 *ssid, size_t len,
 801                           u8 active_scan, u8 high_prio, u8 num_channels,
 802                           u8 probe_requests)
 803 {
 804         struct wl1251_cmd_trigger_scan_to *trigger = NULL;
 805         struct cmd_scan *params = NULL;
 806         int i, ret;
 807         u16 scan_options = 0;
 808
 809         if (wl->scanning)
 810                 return -EINVAL;
 811
 812         params = kzalloc(sizeof(*params), GFP_KERNEL);
 813         if (!params)
 814                 return -ENOMEM;
 815
 816         params->params.rx_config_options = cpu_to_le32(CFG_RX_ALL_GOOD);
 817         params->params.rx_filter_options =
 818                 cpu_to_le32(CFG_RX_PRSP_EN | CFG_RX_MGMT_EN | CFG_RX_BCN_EN);
 819
 820         /* High priority scan */
 821         if (!active_scan)
 822                 scan_options |= SCAN_PASSIVE;
 823         if (high_prio)
 824                 scan_options |= SCAN_PRIORITY_HIGH;
 825         params->params.scan_options = scan_options;
 826
 827         params->params.num_channels = num_channels;
 828         params->params.num_probe_requests = probe_requests;
 829         params->params.tx_rate = cpu_to_le16(1 << 1); /* 2 Mbps */
 830         params->params.tid_trigger = 0;
 831
 832         for (i = 0; i < num_channels; i++) {
 833                 params->channels[i].min_duration = cpu_to_le32(30000);
 834                 params->channels[i].max_duration = cpu_to_le32(60000);
 835                 memset(&params->channels[i].bssid_lsb, 0xff, 4);
 836                 memset(&params->channels[i].bssid_msb, 0xff, 2);
 837                 params->channels[i].early_termination = 0;
 838                 params->channels[i].tx_power_att = 0;
 839                 params->channels[i].channel = i + 1;
 840                 memset(params->channels[i].pad, 0, 3);
 841         }
 842
 843         for (i = num_channels; i < SCAN_MAX_NUM_OF_CHANNELS; i++)
 844                 memset(&params->channels[i], 0,
 845                        sizeof(struct basic_scan_channel_parameters));
 846
 847         if (len && ssid) {
 848                 params->params.ssid_len = len;
 849                 memcpy(params->params.ssid, ssid, len);
 850         } else {
 851                 params->params.ssid_len = 0;
 852                 memset(params->params.ssid, 0, 32);
 853         }
 854
 855         ret = wl1251_build_probe_req(wl, ssid, len);
 856         if (ret < 0) {
 857                 wl1251_error("PROBE request template failed");
 858                 goto out;
 859         }
 860
 861         trigger = kzalloc(sizeof(*trigger), GFP_KERNEL);
 862         if (!trigger)
 863                 goto out;
 864
 865         trigger->timeout = 0;
 866
 867         ret = wl1251_cmd_send(wl, CMD_TRIGGER_SCAN_TO, trigger,
 868                               sizeof(*trigger));
 869         if (ret < 0) {
 870                 wl1251_error("trigger scan to failed for hw scan");
 871                 goto out;
 872         }
 873
 874         wl1251_dump(DEBUG_SCAN, "SCAN: ", params, sizeof(*params));
 875
 876         wl->scanning = true;
 877
 878         ret = wl1251_cmd_send(wl, CMD_SCAN, params, sizeof(*params));
 879         if (ret < 0)
 880                 wl1251_error("SCAN failed");
 881
 882         wl1251_mem_read(wl, wl->cmd_box_addr, params, sizeof(*params));
 883
 884         if (params->header.status != CMD_STATUS_SUCCESS) {
 885                 wl1251_error("TEST command answer error: %d",
 886                              params->header.status);
 887                 wl->scanning = false;
 888                 ret = -EIO;
 889                 goto out;
 890         }
 891
 892 out:
 893         kfree(params);
 894         return ret;
 895
 896 }
 897
 898 static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
 899                              struct cfg80211_scan_request *req)
 900 {
 901         struct wl1251 *wl = hw->priv;
 902         int ret;
 903         u8 *ssid = NULL;
 904         size_t ssid_len = 0;
 905
 906         wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan");
 907
 908         if (req->n_ssids) {
 909                 ssid = req->ssids[0].ssid;
 910                 ssid_len = req->ssids[0].ssid_len;
 911         }
 912
 913         mutex_lock(&wl->mutex);
 914
 915         ret = wl1251_ps_elp_wakeup(wl);
 916         if (ret < 0)
 917                 goto out;
 918
 919         ret = wl1251_hw_scan(hw->priv, ssid, ssid_len, 1, 0, 13, 3);
 920
 921         wl1251_ps_elp_sleep(wl);
 922
 923 out:
 924         mutex_unlock(&wl->mutex);
 925
 926         return ret;
 927 }
 928
 929 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
 930 {
 931         struct wl1251 *wl = hw->priv;
 932         int ret;
 933
 934         mutex_lock(&wl->mutex);
 935
 936         ret = wl1251_ps_elp_wakeup(wl);
 937         if (ret < 0)
 938                 goto out;
 939
 940         ret = wl1251_acx_rts_threshold(wl, (u16) value);
 941         if (ret < 0)
 942                 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret);
 943
 944         wl1251_ps_elp_sleep(wl);
 945
 946 out:
 947         mutex_unlock(&wl->mutex);
 948
 949         return ret;
 950 }
 951
 952 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
 953                                        struct ieee80211_vif *vif,
 954                                        struct ieee80211_bss_conf *bss_conf,
 955                                        u32 changed)
 956 {
 957         enum wl1251_cmd_ps_mode mode;
 958         struct wl1251 *wl = hw->priv;
 959         struct sk_buff *beacon;
 960         int ret;
 961
 962         wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed");
 963
 964         mutex_lock(&wl->mutex);
 965
 966         ret = wl1251_ps_elp_wakeup(wl);
 967         if (ret < 0)
 968                 goto out;
 969
 970         if (changed & BSS_CHANGED_ASSOC) {
 971                 if (bss_conf->assoc) {
 972                         wl->aid = bss_conf->aid;
 973
 974                         ret = wl1251_build_ps_poll(wl, wl->aid);
 975                         if (ret < 0)
 976                                 goto out_sleep;
 977
 978                         ret = wl1251_acx_aid(wl, wl->aid);
 979                         if (ret < 0)
 980                                 goto out_sleep;
 981
 982                         /* If we want to go in PSM but we're not there yet */
 983                         if (wl->psm_requested && !wl->psm) {
 984                                 mode = STATION_POWER_SAVE_MODE;
 985                                 ret = wl1251_ps_set_mode(wl, mode);
 986                                 if (ret < 0)
 987                                         goto out_sleep;
 988                         }
 989                 }
 990         }
 991         if (changed & BSS_CHANGED_ERP_SLOT) {
 992                 if (bss_conf->use_short_slot)
 993                         ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT);
 994                 else
 995                         ret = wl1251_acx_slot(wl, SLOT_TIME_LONG);
 996                 if (ret < 0) {
 997                         wl1251_warning("Set slot time failed %d", ret);
 998                         goto out_sleep;
 999                 }
1000         }
1001
1002         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1003                 if (bss_conf->use_short_preamble)
1004                         wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1005                 else
1006                         wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1007         }
1008
1009         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1010                 if (bss_conf->use_cts_prot)
1011                         ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1012                 else
1013                         ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1014                 if (ret < 0) {
1015                         wl1251_warning("Set ctsprotect failed %d", ret);
1016                         goto out;
1017                 }
1018         }
1019
1020         if (changed & BSS_CHANGED_BSSID) {
1021                 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
1022
1023                 ret = wl1251_build_null_data(wl);
1024                 if (ret < 0)
1025                         goto out;
1026
1027                 if (wl->bss_type != BSS_TYPE_IBSS) {
1028                         ret = wl1251_cmd_join(wl, wl->bss_type, 5, 100, 1);
1029                         if (ret < 0)
1030                                 goto out_sleep;
1031                         wl1251_warning("Set ctsprotect failed %d", ret);
1032                         goto out_sleep;
1033                 }
1034         }
1035
1036         if (changed & BSS_CHANGED_BEACON) {
1037                 beacon = ieee80211_beacon_get(hw, vif);
1038                 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data,
1039                                               beacon->len);
1040
1041                 if (ret < 0) {
1042                         dev_kfree_skb(beacon);
1043                         goto out;
1044                 }
1045
1046                 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
1047                                               beacon->len);
1048
1049                 dev_kfree_skb(beacon);
1050
1051                 if (ret < 0)
1052                         goto out;
1053
1054                 ret = wl->chip.op_cmd_join(wl, wl->bss_type, 1, 100, 0);
1055
1056                 if (ret < 0)
1057                         goto out;
1058         }
1059
1060 out_sleep:
1061         wl1251_ps_elp_sleep(wl);
1062
1063 out:
1064         mutex_unlock(&wl->mutex);
1065 }
1066
1067
1068 /* can't be const, mac80211 writes to this */
1069 static struct ieee80211_rate wl1251_rates[] = {
1070         { .bitrate = 10,
1071           .hw_value = 0x1,
1072           .hw_value_short = 0x1, },
1073         { .bitrate = 20,
1074           .hw_value = 0x2,
1075           .hw_value_short = 0x2,
1076           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1077         { .bitrate = 55,
1078           .hw_value = 0x4,
1079           .hw_value_short = 0x4,
1080           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1081         { .bitrate = 110,
1082           .hw_value = 0x20,
1083           .hw_value_short = 0x20,
1084           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1085         { .bitrate = 60,
1086           .hw_value = 0x8,
1087           .hw_value_short = 0x8, },
1088         { .bitrate = 90,
1089           .hw_value = 0x10,
1090           .hw_value_short = 0x10, },
1091         { .bitrate = 120,
1092           .hw_value = 0x40,
1093           .hw_value_short = 0x40, },
1094         { .bitrate = 180,
1095           .hw_value = 0x80,
1096           .hw_value_short = 0x80, },
1097         { .bitrate = 240,
1098           .hw_value = 0x200,
1099           .hw_value_short = 0x200, },
1100         { .bitrate = 360,
1101          .hw_value = 0x400,
1102          .hw_value_short = 0x400, },
1103         { .bitrate = 480,
1104           .hw_value = 0x800,
1105           .hw_value_short = 0x800, },
1106         { .bitrate = 540,
1107           .hw_value = 0x1000,
1108           .hw_value_short = 0x1000, },
1109 };
1110
1111 /* can't be const, mac80211 writes to this */
1112 static struct ieee80211_channel wl1251_channels[] = {
1113         { .hw_value = 1, .center_freq = 2412},
1114         { .hw_value = 2, .center_freq = 2417},
1115         { .hw_value = 3, .center_freq = 2422},
1116         { .hw_value = 4, .center_freq = 2427},
1117         { .hw_value = 5, .center_freq = 2432},
1118         { .hw_value = 6, .center_freq = 2437},
1119         { .hw_value = 7, .center_freq = 2442},
1120         { .hw_value = 8, .center_freq = 2447},
1121         { .hw_value = 9, .center_freq = 2452},
1122         { .hw_value = 10, .center_freq = 2457},
1123         { .hw_value = 11, .center_freq = 2462},
1124         { .hw_value = 12, .center_freq = 2467},
1125         { .hw_value = 13, .center_freq = 2472},
1126 };
1127
1128 /* can't be const, mac80211 writes to this */
1129 static struct ieee80211_supported_band wl1251_band_2ghz = {
1130         .channels = wl1251_channels,
1131         .n_channels = ARRAY_SIZE(wl1251_channels),
1132         .bitrates = wl1251_rates,
1133         .n_bitrates = ARRAY_SIZE(wl1251_rates),
1134 };
1135
1136 static const struct ieee80211_ops wl1251_ops = {
1137         .start = wl1251_op_start,
1138         .stop = wl1251_op_stop,
1139         .add_interface = wl1251_op_add_interface,
1140         .remove_interface = wl1251_op_remove_interface,
1141         .config = wl1251_op_config,
1142         .configure_filter = wl1251_op_configure_filter,
1143         .tx = wl1251_op_tx,
1144         .set_key = wl1251_op_set_key,
1145         .hw_scan = wl1251_op_hw_scan,
1146         .bss_info_changed = wl1251_op_bss_info_changed,
1147         .set_rts_threshold = wl1251_op_set_rts_threshold,
1148 };
1149
1150 static int wl1251_register_hw(struct wl1251 *wl)
1151 {
1152         int ret;
1153
1154         if (wl->mac80211_registered)
1155                 return 0;
1156
1157         SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1158
1159         ret = ieee80211_register_hw(wl->hw);
1160         if (ret < 0) {
1161                 wl1251_error("unable to register mac80211 hw: %d", ret);
1162                 return ret;
1163         }
1164
1165         wl->mac80211_registered = true;
1166
1167         wl1251_notice("loaded");
1168
1169         return 0;
1170 }
1171
1172 static int wl1251_init_ieee80211(struct wl1251 *wl)
1173 {
1174         /* The tx descriptor buffer and the TKIP space */
1175         wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
1176                 + WL1251_TKIP_IV_SPACE;
1177
1178         /* unit us */
1179         /* FIXME: find a proper value */
1180         wl->hw->channel_change_time = 10000;
1181
1182         wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1183                 IEEE80211_HW_NOISE_DBM;
1184
1185         wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1186         wl->hw->wiphy->max_scan_ssids = 1;
1187         wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz;
1188
1189         SET_IEEE80211_DEV(wl->hw, &wl->spi->dev);
1190
1191         return 0;
1192 }
1193
1194 extern struct wl1251_if_operations wl1251_spi_ops;
1195
1196 #define WL1251_DEFAULT_CHANNEL 1
1197 static int __devinit wl1251_probe(struct spi_device *spi)
1198 {
1199         struct wl12xx_platform_data *pdata;
1200         struct ieee80211_hw *hw;
1201         struct wl1251 *wl;
1202         int ret, i;
1203         static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1204
1205         pdata = spi->dev.platform_data;
1206         if (!pdata) {
1207                 wl1251_error("no platform data");
1208                 return -ENODEV;
1209         }
1210
1211         hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops);
1212         if (!hw) {
1213                 wl1251_error("could not alloc ieee80211_hw");
1214                 return -ENOMEM;
1215         }
1216
1217         wl = hw->priv;
1218         memset(wl, 0, sizeof(*wl));
1219
1220         wl->hw = hw;
1221         dev_set_drvdata(&spi->dev, wl);
1222         wl->spi = spi;
1223         wl->if_ops = &wl1251_spi_ops;
1224
1225         wl->data_in_count = 0;
1226
1227         skb_queue_head_init(&wl->tx_queue);
1228
1229         INIT_WORK(&wl->filter_work, wl1251_filter_work);
1230         wl->channel = WL1251_DEFAULT_CHANNEL;
1231         wl->scanning = false;
1232         wl->default_key = 0;
1233         wl->listen_int = 1;
1234         wl->rx_counter = 0;
1235         wl->rx_handled = 0;
1236         wl->rx_current_buffer = 0;
1237         wl->rx_last_id = 0;
1238         wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
1239         wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
1240         wl->elp = false;
1241         wl->psm = 0;
1242         wl->psm_requested = false;
1243         wl->tx_queue_stopped = false;
1244         wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
1245
1246         /* We use the default power on sleep time until we know which chip
1247          * we're using */
1248         wl->chip.power_on_sleep = WL1251_DEFAULT_POWER_ON_SLEEP;
1249
1250         for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1251                 wl->tx_frames[i] = NULL;
1252
1253         wl->next_tx_complete = 0;
1254
1255         /*
1256          * In case our MAC address is not correctly set,
1257          * we use a random but Nokia MAC.
1258          */
1259         memcpy(wl->mac_addr, nokia_oui, 3);
1260         get_random_bytes(wl->mac_addr + 3, 3);
1261
1262         wl->state = WL1251_STATE_OFF;
1263         mutex_init(&wl->mutex);
1264
1265         wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
1266         wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
1267
1268         wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1269         if (!wl->rx_descriptor) {
1270                 wl1251_error("could not allocate memory for rx descriptor");
1271                 ret = -ENOMEM;
1272                 goto out_free;
1273         }
1274
1275         /* This is the only SPI value that we need to set here, the rest
1276          * comes from the board-peripherals file */
1277         spi->bits_per_word = 32;
1278
1279         ret = spi_setup(spi);
1280         if (ret < 0) {
1281                 wl1251_error("spi_setup failed");
1282                 goto out_free;
1283         }
1284
1285         wl->set_power = pdata->set_power;
1286         if (!wl->set_power) {
1287                 wl1251_error("set power function missing in platform data");
1288                 ret = -ENODEV;
1289                 goto out_free;
1290         }
1291
1292         wl->irq = spi->irq;
1293         if (wl->irq < 0) {
1294                 wl1251_error("irq missing in platform data");
1295                 ret = -ENODEV;
1296                 goto out_free;
1297         }
1298
1299         ret = request_irq(wl->irq, wl1251_irq, 0, DRIVER_NAME, wl);
1300         if (ret < 0) {
1301                 wl1251_error("request_irq() failed: %d", ret);
1302                 goto out_free;
1303         }
1304
1305         set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING);
1306
1307         disable_irq(wl->irq);
1308
1309         ret = wl1251_init_ieee80211(wl);
1310         if (ret)
1311                 goto out_irq;
1312
1313         ret = wl1251_register_hw(wl);
1314         if (ret)
1315                 goto out_irq;
1316
1317         wl1251_debugfs_init(wl);
1318
1319         wl1251_notice("initialized");
1320
1321         return 0;
1322
1323  out_irq:
1324         free_irq(wl->irq, wl);
1325
1326  out_free:
1327         kfree(wl->rx_descriptor);
1328         wl->rx_descriptor = NULL;
1329
1330         ieee80211_free_hw(hw);
1331
1332         return ret;
1333 }
1334
1335 static int __devexit wl1251_remove(struct spi_device *spi)
1336 {
1337         struct wl1251 *wl = dev_get_drvdata(&spi->dev);
1338
1339         ieee80211_unregister_hw(wl->hw);
1340
1341         wl1251_debugfs_exit(wl);
1342
1343         free_irq(wl->irq, wl);
1344         kfree(wl->target_mem_map);
1345         kfree(wl->data_path);
1346         kfree(wl->fw);
1347         wl->fw = NULL;
1348         kfree(wl->nvs);
1349         wl->nvs = NULL;
1350
1351         kfree(wl->rx_descriptor);
1352         wl->rx_descriptor = NULL;
1353
1354         ieee80211_free_hw(wl->hw);
1355
1356         return 0;
1357 }
1358
1359
1360 static struct spi_driver wl1251_spi_driver = {
1361         .driver = {
1362                 /* FIXME: use wl12xx name to not break the user space */
1363                 .name           = "wl12xx",
1364                 .bus            = &spi_bus_type,
1365                 .owner          = THIS_MODULE,
1366         },
1367
1368         .probe          = wl1251_probe,
1369         .remove         = __devexit_p(wl1251_remove),
1370 };
1371
1372 static int __init wl1251_init(void)
1373 {
1374         int ret;
1375
1376         ret = spi_register_driver(&wl1251_spi_driver);
1377         if (ret < 0) {
1378                 wl1251_error("failed to register spi driver: %d", ret);
1379                 goto out;
1380         }
1381
1382 out:
1383         return ret;
1384 }
1385
1386 static void __exit wl1251_exit(void)
1387 {
1388         spi_unregister_driver(&wl1251_spi_driver);
1389
1390         wl1251_notice("unloaded");
1391 }
1392
1393 module_init(wl1251_init);
1394 module_exit(wl1251_exit);
1395
1396 MODULE_LICENSE("GPL");
1397 MODULE_AUTHOR("Kalle Valo <Kalle.Valo@nokia.com>, "
1398                 "Luciano Coelho <luciano.coelho@nokia.com>");