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 "wl1251_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         }
 161 }
 162
 163 static int wl12xx_chip_wakeup(struct wl12xx *wl)
 164 {
 165         int ret = 0;
 166
 167         wl12xx_power_on(wl);
 168         msleep(wl->chip.power_on_sleep);
 169         wl12xx_spi_reset(wl);
 170         wl12xx_spi_init(wl);
 171
 172         /* We don't need a real memory partition here, because we only want
 173          * to use the registers at this point. */
 174         wl12xx_set_partition(wl,
 175                              0x00000000,
 176                              0x00000000,
 177                              REGISTERS_BASE,
 178                              REGISTERS_DOWN_SIZE);
 179
 180         /* ELP module wake up */
 181         wl12xx_fw_wakeup(wl);
 182
 183         /* whal_FwCtrl_BootSm() */
 184
 185         /* 0. read chip id from CHIP_ID */
 186         wl->chip.id = wl12xx_reg_read32(wl, CHIP_ID_B);
 187
 188         /* 1. check if chip id is valid */
 189
 190         switch (wl->chip.id) {
 191         case CHIP_ID_1251_PG12:
 192                 wl12xx_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG12)",
 193                              wl->chip.id);
 194
 195                 wl1251_setup(wl);
 196
 197                 break;
 198         case CHIP_ID_1271_PG10:
 199                 wl12xx_warning("chip id 0x%x (1271 PG10) support is obsolete",
 200                                wl->chip.id);
 201                 break;
 202         case CHIP_ID_1271_PG20:
 203                 wl12xx_debug(DEBUG_BOOT, "chip id 0x%x (1271 PG20)",
 204                              wl->chip.id);
 205                 break;
 206         case CHIP_ID_1251_PG10:
 207         case CHIP_ID_1251_PG11:
 208         default:
 209                 wl12xx_error("unsupported chip id: 0x%x", wl->chip.id);
 210                 ret = -ENODEV;
 211                 goto out;
 212         }
 213
 214         if (wl->fw == NULL) {
 215                 ret = wl12xx_fetch_firmware(wl);
 216                 if (ret < 0)
 217                         goto out;
 218         }
 219
 220         /* No NVS from netlink, try to get it from the filesystem */
 221         if (wl->nvs == NULL) {
 222                 ret = wl12xx_fetch_nvs(wl);
 223                 if (ret < 0)
 224                         goto out;
 225         }
 226
 227 out:
 228         return ret;
 229 }
 230
 231 static void wl12xx_filter_work(struct work_struct *work)
 232 {
 233         struct wl12xx *wl =
 234                 container_of(work, struct wl12xx, filter_work);
 235         int ret;
 236
 237         mutex_lock(&wl->mutex);
 238
 239         if (wl->state == WL12XX_STATE_OFF)
 240                 goto out;
 241
 242         ret = wl12xx_ps_elp_wakeup(wl);
 243         if (ret < 0)
 244                 goto out;
 245
 246         ret = wl12xx_cmd_join(wl, wl->bss_type, 1, 100, 0);
 247         if (ret < 0)
 248                 goto out_sleep;
 249
 250 out_sleep:
 251         wl12xx_ps_elp_sleep(wl);
 252
 253 out:
 254         mutex_unlock(&wl->mutex);
 255 }
 256
 257 int wl12xx_plt_start(struct wl12xx *wl)
 258 {
 259         int ret;
 260
 261         wl12xx_notice("power up");
 262
 263         if (wl->state != WL12XX_STATE_OFF) {
 264                 wl12xx_error("cannot go into PLT state because not "
 265                              "in off state: %d", wl->state);
 266                 return -EBUSY;
 267         }
 268
 269         wl->state = WL12XX_STATE_PLT;
 270
 271         ret = wl12xx_chip_wakeup(wl);
 272         if (ret < 0)
 273                 return ret;
 274
 275         ret = wl->chip.op_boot(wl);
 276         if (ret < 0)
 277                 return ret;
 278
 279         wl12xx_notice("firmware booted in PLT mode (%s)", wl->chip.fw_ver);
 280
 281         ret = wl->chip.op_plt_init(wl);
 282         if (ret < 0)
 283                 return ret;
 284
 285         return 0;
 286 }
 287
 288 int wl12xx_plt_stop(struct wl12xx *wl)
 289 {
 290         wl12xx_notice("power down");
 291
 292         if (wl->state != WL12XX_STATE_PLT) {
 293                 wl12xx_error("cannot power down because not in PLT "
 294                              "state: %d", wl->state);
 295                 return -EBUSY;
 296         }
 297
 298         wl12xx_disable_interrupts(wl);
 299         wl12xx_power_off(wl);
 300
 301         wl->state = WL12XX_STATE_OFF;
 302
 303         return 0;
 304 }
 305
 306
 307 static int wl12xx_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 308 {
 309         struct wl12xx *wl = hw->priv;
 310
 311         skb_queue_tail(&wl->tx_queue, skb);
 312
 313         /*
 314          * The chip specific setup must run before the first TX packet -
 315          * before that, the tx_work will not be initialized!
 316          */
 317
 318         schedule_work(&wl->tx_work);
 319
 320         /*
 321          * The workqueue is slow to process the tx_queue and we need stop
 322          * the queue here, otherwise the queue will get too long.
 323          */
 324         if (skb_queue_len(&wl->tx_queue) >= WL12XX_TX_QUEUE_MAX_LENGTH) {
 325                 ieee80211_stop_queues(wl->hw);
 326
 327                 /*
 328                  * FIXME: this is racy, the variable is not properly
 329                  * protected. Maybe fix this by removing the stupid
 330                  * variable altogether and checking the real queue state?
 331                  */
 332                 wl->tx_queue_stopped = true;
 333         }
 334
 335         return NETDEV_TX_OK;
 336 }
 337
 338 static int wl12xx_op_start(struct ieee80211_hw *hw)
 339 {
 340         struct wl12xx *wl = hw->priv;
 341         int ret = 0;
 342
 343         wl12xx_debug(DEBUG_MAC80211, "mac80211 start");
 344
 345         mutex_lock(&wl->mutex);
 346
 347         if (wl->state != WL12XX_STATE_OFF) {
 348                 wl12xx_error("cannot start because not in off state: %d",
 349                              wl->state);
 350                 ret = -EBUSY;
 351                 goto out;
 352         }
 353
 354         ret = wl12xx_chip_wakeup(wl);
 355         if (ret < 0)
 356                 return ret;
 357
 358         ret = wl->chip.op_boot(wl);
 359         if (ret < 0)
 360                 goto out;
 361
 362         ret = wl->chip.op_hw_init(wl);
 363         if (ret < 0)
 364                 goto out;
 365
 366         ret = wl12xx_acx_station_id(wl);
 367         if (ret < 0)
 368                 goto out;
 369
 370         wl->state = WL12XX_STATE_ON;
 371
 372         wl12xx_info("firmware booted (%s)", wl->chip.fw_ver);
 373
 374 out:
 375         if (ret < 0)
 376                 wl12xx_power_off(wl);
 377
 378         mutex_unlock(&wl->mutex);
 379
 380         return ret;
 381 }
 382
 383 static void wl12xx_op_stop(struct ieee80211_hw *hw)
 384 {
 385         struct wl12xx *wl = hw->priv;
 386
 387         wl12xx_info("down");
 388
 389         wl12xx_debug(DEBUG_MAC80211, "mac80211 stop");
 390
 391         mutex_lock(&wl->mutex);
 392
 393         WARN_ON(wl->state != WL12XX_STATE_ON);
 394
 395         if (wl->scanning) {
 396                 mutex_unlock(&wl->mutex);
 397                 ieee80211_scan_completed(wl->hw, true);
 398                 mutex_lock(&wl->mutex);
 399                 wl->scanning = false;
 400         }
 401
 402         wl->state = WL12XX_STATE_OFF;
 403
 404         wl12xx_disable_interrupts(wl);
 405
 406         mutex_unlock(&wl->mutex);
 407
 408         cancel_work_sync(&wl->irq_work);
 409         cancel_work_sync(&wl->tx_work);
 410         cancel_work_sync(&wl->filter_work);
 411
 412         mutex_lock(&wl->mutex);
 413
 414         /* let's notify MAC80211 about the remaining pending TX frames */
 415         wl->chip.op_tx_flush(wl);
 416         wl12xx_power_off(wl);
 417
 418         memset(wl->bssid, 0, ETH_ALEN);
 419         wl->listen_int = 1;
 420         wl->bss_type = MAX_BSS_TYPE;
 421
 422         wl->data_in_count = 0;
 423         wl->rx_counter = 0;
 424         wl->rx_handled = 0;
 425         wl->rx_current_buffer = 0;
 426         wl->rx_last_id = 0;
 427         wl->next_tx_complete = 0;
 428         wl->elp = false;
 429         wl->psm = 0;
 430         wl->tx_queue_stopped = false;
 431         wl->power_level = WL12XX_DEFAULT_POWER_LEVEL;
 432
 433         wl12xx_debugfs_reset(wl);
 434
 435         mutex_unlock(&wl->mutex);
 436 }
 437
 438 static int wl12xx_op_add_interface(struct ieee80211_hw *hw,
 439                                    struct ieee80211_if_init_conf *conf)
 440 {
 441         struct wl12xx *wl = hw->priv;
 442         DECLARE_MAC_BUF(mac);
 443         int ret = 0;
 444
 445         wl12xx_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %s",
 446                      conf->type, print_mac(mac, conf->mac_addr));
 447
 448         mutex_lock(&wl->mutex);
 449
 450         switch (conf->type) {
 451         case NL80211_IFTYPE_STATION:
 452                 wl->bss_type = BSS_TYPE_STA_BSS;
 453                 break;
 454         case NL80211_IFTYPE_ADHOC:
 455                 wl->bss_type = BSS_TYPE_IBSS;
 456                 break;
 457         default:
 458                 ret = -EOPNOTSUPP;
 459                 goto out;
 460         }
 461
 462         if (memcmp(wl->mac_addr, conf->mac_addr, ETH_ALEN)) {
 463                 memcpy(wl->mac_addr, conf->mac_addr, ETH_ALEN);
 464                 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
 465                 ret = wl12xx_acx_station_id(wl);
 466                 if (ret < 0)
 467                         goto out;
 468         }
 469
 470 out:
 471         mutex_unlock(&wl->mutex);
 472         return ret;
 473 }
 474
 475 static void wl12xx_op_remove_interface(struct ieee80211_hw *hw,
 476                                          struct ieee80211_if_init_conf *conf)
 477 {
 478         wl12xx_debug(DEBUG_MAC80211, "mac80211 remove interface");
 479 }
 480
 481 static int wl12xx_build_null_data(struct wl12xx *wl)
 482 {
 483         struct wl12xx_null_data_template template;
 484
 485         if (!is_zero_ether_addr(wl->bssid)) {
 486                 memcpy(template.header.da, wl->bssid, ETH_ALEN);
 487                 memcpy(template.header.bssid, wl->bssid, ETH_ALEN);
 488         } else {
 489                 memset(template.header.da, 0xff, ETH_ALEN);
 490                 memset(template.header.bssid, 0xff, ETH_ALEN);
 491         }
 492
 493         memcpy(template.header.sa, wl->mac_addr, ETH_ALEN);
 494         template.header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_DATA |
 495                                                 IEEE80211_STYPE_NULLFUNC);
 496
 497         return wl12xx_cmd_template_set(wl, CMD_NULL_DATA, &template,
 498                                        sizeof(template));
 499
 500 }
 501
 502 static int wl12xx_build_ps_poll(struct wl12xx *wl, u16 aid)
 503 {
 504         struct wl12xx_ps_poll_template template;
 505
 506         memcpy(template.bssid, wl->bssid, ETH_ALEN);
 507         memcpy(template.ta, wl->mac_addr, ETH_ALEN);
 508         template.aid = aid;
 509         template.fc = cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
 510
 511         return wl12xx_cmd_template_set(wl, CMD_PS_POLL, &template,
 512                                        sizeof(template));
 513
 514 }
 515
 516 static int wl12xx_op_config(struct ieee80211_hw *hw, u32 changed)
 517 {
 518         struct wl12xx *wl = hw->priv;
 519         struct ieee80211_conf *conf = &hw->conf;
 520         int channel, ret = 0;
 521
 522         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
 523
 524         wl12xx_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
 525                      channel,
 526                      conf->flags & IEEE80211_CONF_PS ? "on" : "off",
 527                      conf->power_level);
 528
 529         mutex_lock(&wl->mutex);
 530
 531         ret = wl12xx_ps_elp_wakeup(wl);
 532         if (ret < 0)
 533                 goto out;
 534
 535         if (channel != wl->channel) {
 536                 /* FIXME: use beacon interval provided by mac80211 */
 537                 ret = wl12xx_cmd_join(wl, wl->bss_type, 1, 100, 0);
 538                 if (ret < 0)
 539                         goto out_sleep;
 540
 541                 wl->channel = channel;
 542         }
 543
 544         ret = wl12xx_build_null_data(wl);
 545         if (ret < 0)
 546                 goto out_sleep;
 547
 548         if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
 549                 wl12xx_info("psm enabled");
 550
 551                 wl->psm_requested = true;
 552
 553                 /*
 554                  * We enter PSM only if we're already associated.
 555                  * If we're not, we'll enter it when joining an SSID,
 556                  * through the bss_info_changed() hook.
 557                  */
 558                 ret = wl12xx_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
 559         } else if (!(conf->flags & IEEE80211_CONF_PS) &&
 560                    wl->psm_requested) {
 561                 wl12xx_info("psm disabled");
 562
 563                 wl->psm_requested = false;
 564
 565                 if (wl->psm)
 566                         ret = wl12xx_ps_set_mode(wl, STATION_ACTIVE_MODE);
 567         }
 568
 569         if (conf->power_level != wl->power_level) {
 570                 ret = wl12xx_acx_tx_power(wl, conf->power_level);
 571                 if (ret < 0)
 572                         goto out;
 573
 574                 wl->power_level = conf->power_level;
 575         }
 576
 577 out_sleep:
 578         wl12xx_ps_elp_sleep(wl);
 579
 580 out:
 581         mutex_unlock(&wl->mutex);
 582
 583         return ret;
 584 }
 585
 586 #define WL12XX_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
 587                                   FIF_ALLMULTI | \
 588                                   FIF_FCSFAIL | \
 589                                   FIF_BCN_PRBRESP_PROMISC | \
 590                                   FIF_CONTROL | \
 591                                   FIF_OTHER_BSS)
 592
 593 static void wl12xx_op_configure_filter(struct ieee80211_hw *hw,
 594                                        unsigned int changed,
 595                                        unsigned int *total,
 596                                        int mc_count,
 597                                        struct dev_addr_list *mc_list)
 598 {
 599         struct wl12xx *wl = hw->priv;
 600
 601         wl12xx_debug(DEBUG_MAC80211, "mac80211 configure filter");
 602
 603         *total &= WL12XX_SUPPORTED_FILTERS;
 604         changed &= WL12XX_SUPPORTED_FILTERS;
 605
 606         if (changed == 0)
 607                 /* no filters which we support changed */
 608                 return;
 609
 610         /* FIXME: wl->rx_config and wl->rx_filter are not protected */
 611
 612         wl->rx_config = WL12XX_DEFAULT_RX_CONFIG;
 613         wl->rx_filter = WL12XX_DEFAULT_RX_FILTER;
 614
 615         if (*total & FIF_PROMISC_IN_BSS) {
 616                 wl->rx_config |= CFG_BSSID_FILTER_EN;
 617                 wl->rx_config |= CFG_RX_ALL_GOOD;
 618         }
 619         if (*total & FIF_ALLMULTI)
 620                 /*
 621                  * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
 622                  * all multicast frames
 623                  */
 624                 wl->rx_config &= ~CFG_MC_FILTER_EN;
 625         if (*total & FIF_FCSFAIL)
 626                 wl->rx_filter |= CFG_RX_FCS_ERROR;
 627         if (*total & FIF_BCN_PRBRESP_PROMISC) {
 628                 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
 629                 wl->rx_config &= ~CFG_SSID_FILTER_EN;
 630         }
 631         if (*total & FIF_CONTROL)
 632                 wl->rx_filter |= CFG_RX_CTL_EN;
 633         if (*total & FIF_OTHER_BSS)
 634                 wl->rx_filter &= ~CFG_BSSID_FILTER_EN;
 635
 636         /*
 637          * FIXME: workqueues need to be properly cancelled on stop(), for
 638          * now let's just disable changing the filter settings. They will
 639          * be updated any on config().
 640          */
 641         /* schedule_work(&wl->filter_work); */
 642 }
 643
 644 /* HW encryption */
 645 static int wl12xx_set_key_type(struct wl12xx *wl,
 646                                struct wl12xx_cmd_set_keys *key,
 647                                enum set_key_cmd cmd,
 648                                struct ieee80211_key_conf *mac80211_key,
 649                                const u8 *addr)
 650 {
 651         switch (mac80211_key->alg) {
 652         case ALG_WEP:
 653                 if (is_broadcast_ether_addr(addr))
 654                         key->key_type = KEY_WEP_DEFAULT;
 655                 else
 656                         key->key_type = KEY_WEP_ADDR;
 657
 658                 mac80211_key->hw_key_idx = mac80211_key->keyidx;
 659                 break;
 660         case ALG_TKIP:
 661                 if (is_broadcast_ether_addr(addr))
 662                         key->key_type = KEY_TKIP_MIC_GROUP;
 663                 else
 664                         key->key_type = KEY_TKIP_MIC_PAIRWISE;
 665
 666                 mac80211_key->hw_key_idx = mac80211_key->keyidx;
 667                 break;
 668         case ALG_CCMP:
 669                 if (is_broadcast_ether_addr(addr))
 670                         key->key_type = KEY_AES_GROUP;
 671                 else
 672                         key->key_type = KEY_AES_PAIRWISE;
 673                 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
 674                 break;
 675         default:
 676                 wl12xx_error("Unknown key algo 0x%x", mac80211_key->alg);
 677                 return -EOPNOTSUPP;
 678         }
 679
 680         return 0;
 681 }
 682
 683 static int wl12xx_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 684                              struct ieee80211_vif *vif,
 685                              struct ieee80211_sta *sta,
 686                              struct ieee80211_key_conf *key)
 687 {
 688         struct wl12xx *wl = hw->priv;
 689         struct wl12xx_cmd_set_keys *wl_cmd;
 690         const u8 *addr;
 691         int ret;
 692
 693         static const u8 bcast_addr[ETH_ALEN] =
 694                 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 695
 696         wl12xx_debug(DEBUG_MAC80211, "mac80211 set key");
 697
 698         wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
 699         if (!wl_cmd) {
 700                 ret = -ENOMEM;
 701                 goto out;
 702         }
 703
 704         addr = sta ? sta->addr : bcast_addr;
 705
 706         wl12xx_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
 707         wl12xx_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
 708         wl12xx_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
 709                      key->alg, key->keyidx, key->keylen, key->flags);
 710         wl12xx_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
 711
 712         if (is_zero_ether_addr(addr)) {
 713                 /* We dont support TX only encryption */
 714                 ret = -EOPNOTSUPP;
 715                 goto out;
 716         }
 717
 718         mutex_lock(&wl->mutex);
 719
 720         ret = wl12xx_ps_elp_wakeup(wl);
 721         if (ret < 0)
 722                 goto out_unlock;
 723
 724         switch (cmd) {
 725         case SET_KEY:
 726                 wl_cmd->key_action = KEY_ADD_OR_REPLACE;
 727                 break;
 728         case DISABLE_KEY:
 729                 wl_cmd->key_action = KEY_REMOVE;
 730                 break;
 731         default:
 732                 wl12xx_error("Unsupported key cmd 0x%x", cmd);
 733                 break;
 734         }
 735
 736         ret = wl12xx_set_key_type(wl, wl_cmd, cmd, key, addr);
 737         if (ret < 0) {
 738                 wl12xx_error("Set KEY type failed");
 739                 goto out_sleep;
 740         }
 741
 742         if (wl_cmd->key_type != KEY_WEP_DEFAULT)
 743                 memcpy(wl_cmd->addr, addr, ETH_ALEN);
 744
 745         if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
 746             (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
 747                 /*
 748                  * We get the key in the following form:
 749                  * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
 750                  * but the target is expecting:
 751                  * TKIP - RX MIC - TX MIC
 752                  */
 753                 memcpy(wl_cmd->key, key->key, 16);
 754                 memcpy(wl_cmd->key + 16, key->key + 24, 8);
 755                 memcpy(wl_cmd->key + 24, key->key + 16, 8);
 756
 757         } else {
 758                 memcpy(wl_cmd->key, key->key, key->keylen);
 759         }
 760         wl_cmd->key_size = key->keylen;
 761
 762         wl_cmd->id = key->keyidx;
 763         wl_cmd->ssid_profile = 0;
 764
 765         wl12xx_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
 766
 767         ret = wl12xx_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
 768         if (ret < 0) {
 769                 wl12xx_warning("could not set keys");
 770                 goto out_sleep;
 771         }
 772
 773 out_sleep:
 774         wl12xx_ps_elp_sleep(wl);
 775
 776 out_unlock:
 777         mutex_unlock(&wl->mutex);
 778
 779 out:
 780         kfree(wl_cmd);
 781
 782         return ret;
 783 }
 784
 785 static int wl12xx_build_basic_rates(char *rates)
 786 {
 787         u8 index = 0;
 788
 789         rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_1MB;
 790         rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_2MB;
 791         rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_5MB;
 792         rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_11MB;
 793
 794         return index;
 795 }
 796
 797 static int wl12xx_build_extended_rates(char *rates)
 798 {
 799         u8 index = 0;
 800
 801         rates[index++] = IEEE80211_OFDM_RATE_6MB;
 802         rates[index++] = IEEE80211_OFDM_RATE_9MB;
 803         rates[index++] = IEEE80211_OFDM_RATE_12MB;
 804         rates[index++] = IEEE80211_OFDM_RATE_18MB;
 805         rates[index++] = IEEE80211_OFDM_RATE_24MB;
 806         rates[index++] = IEEE80211_OFDM_RATE_36MB;
 807         rates[index++] = IEEE80211_OFDM_RATE_48MB;
 808         rates[index++] = IEEE80211_OFDM_RATE_54MB;
 809
 810         return index;
 811 }
 812
 813
 814 static int wl12xx_build_probe_req(struct wl12xx *wl, u8 *ssid, size_t ssid_len)
 815 {
 816         struct wl12xx_probe_req_template template;
 817         struct wl12xx_ie_rates *rates;
 818         char *ptr;
 819         u16 size;
 820
 821         ptr = (char *)&template;
 822         size = sizeof(struct ieee80211_header);
 823
 824         memset(template.header.da, 0xff, ETH_ALEN);
 825         memset(template.header.bssid, 0xff, ETH_ALEN);
 826         memcpy(template.header.sa, wl->mac_addr, ETH_ALEN);
 827         template.header.frame_ctl = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
 828
 829         /* IEs */
 830         /* SSID */
 831         template.ssid.header.id = WLAN_EID_SSID;
 832         template.ssid.header.len = ssid_len;
 833         if (ssid_len && ssid)
 834                 memcpy(template.ssid.ssid, ssid, ssid_len);
 835         size += sizeof(struct wl12xx_ie_header) + ssid_len;
 836         ptr += size;
 837
 838         /* Basic Rates */
 839         rates = (struct wl12xx_ie_rates *)ptr;
 840         rates->header.id = WLAN_EID_SUPP_RATES;
 841         rates->header.len = wl12xx_build_basic_rates(rates->rates);
 842         size += sizeof(struct wl12xx_ie_header) + rates->header.len;
 843         ptr += sizeof(struct wl12xx_ie_header) + rates->header.len;
 844
 845         /* Extended rates */
 846         rates = (struct wl12xx_ie_rates *)ptr;
 847         rates->header.id = WLAN_EID_EXT_SUPP_RATES;
 848         rates->header.len = wl12xx_build_extended_rates(rates->rates);
 849         size += sizeof(struct wl12xx_ie_header) + rates->header.len;
 850
 851         wl12xx_dump(DEBUG_SCAN, "PROBE REQ: ", &template, size);
 852
 853         return wl12xx_cmd_template_set(wl, CMD_PROBE_REQ, &template,
 854                                       size);
 855 }
 856
 857 static int wl12xx_hw_scan(struct wl12xx *wl, u8 *ssid, size_t len,
 858                           u8 active_scan, u8 high_prio, u8 num_channels,
 859                           u8 probe_requests)
 860 {
 861         struct wl12xx_cmd_trigger_scan_to *trigger = NULL;
 862         struct cmd_scan *params = NULL;
 863         int i, ret;
 864         u16 scan_options = 0;
 865
 866         if (wl->scanning)
 867                 return -EINVAL;
 868
 869         params = kzalloc(sizeof(*params), GFP_KERNEL);
 870         if (!params)
 871                 return -ENOMEM;
 872
 873         params->params.rx_config_options = cpu_to_le32(CFG_RX_ALL_GOOD);
 874         params->params.rx_filter_options =
 875                 cpu_to_le32(CFG_RX_PRSP_EN | CFG_RX_MGMT_EN | CFG_RX_BCN_EN);
 876
 877         /* High priority scan */
 878         if (!active_scan)
 879                 scan_options |= SCAN_PASSIVE;
 880         if (high_prio)
 881                 scan_options |= SCAN_PRIORITY_HIGH;
 882         params->params.scan_options = scan_options;
 883
 884         params->params.num_channels = num_channels;
 885         params->params.num_probe_requests = probe_requests;
 886         params->params.tx_rate = cpu_to_le16(1 << 1); /* 2 Mbps */
 887         params->params.tid_trigger = 0;
 888
 889         for (i = 0; i < num_channels; i++) {
 890                 params->channels[i].min_duration = cpu_to_le32(30000);
 891                 params->channels[i].max_duration = cpu_to_le32(60000);
 892                 memset(&params->channels[i].bssid_lsb, 0xff, 4);
 893                 memset(&params->channels[i].bssid_msb, 0xff, 2);
 894                 params->channels[i].early_termination = 0;
 895                 params->channels[i].tx_power_att = 0;
 896                 params->channels[i].channel = i + 1;
 897                 memset(params->channels[i].pad, 0, 3);
 898         }
 899
 900         for (i = num_channels; i < SCAN_MAX_NUM_OF_CHANNELS; i++)
 901                 memset(&params->channels[i], 0,
 902                        sizeof(struct basic_scan_channel_parameters));
 903
 904         if (len && ssid) {
 905                 params->params.ssid_len = len;
 906                 memcpy(params->params.ssid, ssid, len);
 907         } else {
 908                 params->params.ssid_len = 0;
 909                 memset(params->params.ssid, 0, 32);
 910         }
 911
 912         ret = wl12xx_build_probe_req(wl, ssid, len);
 913         if (ret < 0) {
 914                 wl12xx_error("PROBE request template failed");
 915                 goto out;
 916         }
 917
 918         trigger = kzalloc(sizeof(*trigger), GFP_KERNEL);
 919         if (!trigger)
 920                 goto out;
 921
 922         trigger->timeout = 0;
 923
 924         ret = wl12xx_cmd_send(wl, CMD_TRIGGER_SCAN_TO, trigger,
 925                               sizeof(*trigger));
 926         if (ret < 0) {
 927                 wl12xx_error("trigger scan to failed for hw scan");
 928                 goto out;
 929         }
 930
 931         wl12xx_dump(DEBUG_SCAN, "SCAN: ", params, sizeof(*params));
 932
 933         wl->scanning = true;
 934
 935         ret = wl12xx_cmd_send(wl, CMD_SCAN, params, sizeof(*params));
 936         if (ret < 0)
 937                 wl12xx_error("SCAN failed");
 938
 939         wl12xx_spi_mem_read(wl, wl->cmd_box_addr, params, sizeof(*params));
 940
 941         if (params->header.status != CMD_STATUS_SUCCESS) {
 942                 wl12xx_error("TEST command answer error: %d",
 943                              params->header.status);
 944                 wl->scanning = false;
 945                 ret = -EIO;
 946                 goto out;
 947         }
 948
 949 out:
 950         kfree(params);
 951         return ret;
 952
 953 }
 954
 955 static int wl12xx_op_hw_scan(struct ieee80211_hw *hw,
 956                              struct cfg80211_scan_request *req)
 957 {
 958         struct wl12xx *wl = hw->priv;
 959         int ret;
 960         u8 *ssid = NULL;
 961         size_t ssid_len = 0;
 962
 963         wl12xx_debug(DEBUG_MAC80211, "mac80211 hw scan");
 964
 965         if (req->n_ssids) {
 966                 ssid = req->ssids[0].ssid;
 967                 ssid_len = req->ssids[0].ssid_len;
 968         }
 969
 970         mutex_lock(&wl->mutex);
 971
 972         ret = wl12xx_ps_elp_wakeup(wl);
 973         if (ret < 0)
 974                 goto out;
 975
 976         ret = wl12xx_hw_scan(hw->priv, ssid, ssid_len, 1, 0, 13, 3);
 977
 978         wl12xx_ps_elp_sleep(wl);
 979
 980 out:
 981         mutex_unlock(&wl->mutex);
 982
 983         return ret;
 984 }
 985
 986 static int wl12xx_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
 987 {
 988         struct wl12xx *wl = hw->priv;
 989         int ret;
 990
 991         mutex_lock(&wl->mutex);
 992
 993         ret = wl12xx_ps_elp_wakeup(wl);
 994         if (ret < 0)
 995                 goto out;
 996
 997         ret = wl12xx_acx_rts_threshold(wl, (u16) value);
 998         if (ret < 0)
 999                 wl12xx_warning("wl12xx_op_set_rts_threshold failed: %d", ret);
1000
1001         wl12xx_ps_elp_sleep(wl);
1002
1003 out:
1004         mutex_unlock(&wl->mutex);
1005
1006         return ret;
1007 }
1008
1009 static void wl12xx_op_bss_info_changed(struct ieee80211_hw *hw,
1010                                        struct ieee80211_vif *vif,
1011                                        struct ieee80211_bss_conf *bss_conf,
1012                                        u32 changed)
1013 {
1014         enum wl12xx_cmd_ps_mode mode;
1015         struct wl12xx *wl = hw->priv;
1016         struct sk_buff *beacon;
1017         int ret;
1018
1019         wl12xx_debug(DEBUG_MAC80211, "mac80211 bss info changed");
1020
1021         mutex_lock(&wl->mutex);
1022
1023         ret = wl12xx_ps_elp_wakeup(wl);
1024         if (ret < 0)
1025                 goto out;
1026
1027         if (changed & BSS_CHANGED_ASSOC) {
1028                 if (bss_conf->assoc) {
1029                         wl->aid = bss_conf->aid;
1030
1031                         ret = wl12xx_build_ps_poll(wl, wl->aid);
1032                         if (ret < 0)
1033                                 goto out_sleep;
1034
1035                         ret = wl12xx_acx_aid(wl, wl->aid);
1036                         if (ret < 0)
1037                                 goto out_sleep;
1038
1039                         /* If we want to go in PSM but we're not there yet */
1040                         if (wl->psm_requested && !wl->psm) {
1041                                 mode = STATION_POWER_SAVE_MODE;
1042                                 ret = wl12xx_ps_set_mode(wl, mode);
1043                                 if (ret < 0)
1044                                         goto out_sleep;
1045                         }
1046                 }
1047         }
1048         if (changed & BSS_CHANGED_ERP_SLOT) {
1049                 if (bss_conf->use_short_slot)
1050                         ret = wl12xx_acx_slot(wl, SLOT_TIME_SHORT);
1051                 else
1052                         ret = wl12xx_acx_slot(wl, SLOT_TIME_LONG);
1053                 if (ret < 0) {
1054                         wl12xx_warning("Set slot time failed %d", ret);
1055                         goto out_sleep;
1056                 }
1057         }
1058
1059         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1060                 if (bss_conf->use_short_preamble)
1061                         wl12xx_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1062                 else
1063                         wl12xx_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1064         }
1065
1066         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1067                 if (bss_conf->use_cts_prot)
1068                         ret = wl12xx_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1069                 else
1070                         ret = wl12xx_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1071                 if (ret < 0) {
1072                         wl12xx_warning("Set ctsprotect failed %d", ret);
1073                         goto out_sleep;
1074                 }
1075         }
1076
1077         if (changed & BSS_CHANGED_BSSID) {
1078                 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
1079
1080                 ret = wl12xx_build_null_data(wl);
1081                 if (ret < 0)
1082                         goto out;
1083
1084                 if (wl->bss_type != BSS_TYPE_IBSS) {
1085                         ret = wl12xx_cmd_join(wl, wl->bss_type, 5, 100, 1);
1086                         if (ret < 0)
1087                                 goto out;
1088                 }
1089         }
1090
1091         if (changed & BSS_CHANGED_BEACON) {
1092                 beacon = ieee80211_beacon_get(hw, vif);
1093                 ret = wl12xx_cmd_template_set(wl, CMD_BEACON, beacon->data,
1094                                               beacon->len);
1095
1096                 if (ret < 0) {
1097                         dev_kfree_skb(beacon);
1098                         goto out;
1099                 }
1100
1101                 ret = wl12xx_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
1102                                               beacon->len);
1103
1104                 dev_kfree_skb(beacon);
1105
1106                 if (ret < 0)
1107                         goto out;
1108
1109                 ret = wl12xx_cmd_join(wl, wl->bss_type, 1, 100, 0);
1110
1111                 if (ret < 0)
1112                         goto out;
1113         }
1114
1115 out_sleep:
1116         wl12xx_ps_elp_sleep(wl);
1117
1118 out:
1119         mutex_unlock(&wl->mutex);
1120 }
1121
1122
1123 /* can't be const, mac80211 writes to this */
1124 static struct ieee80211_rate wl12xx_rates[] = {
1125         { .bitrate = 10,
1126           .hw_value = 0x1,
1127           .hw_value_short = 0x1, },
1128         { .bitrate = 20,
1129           .hw_value = 0x2,
1130           .hw_value_short = 0x2,
1131           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1132         { .bitrate = 55,
1133           .hw_value = 0x4,
1134           .hw_value_short = 0x4,
1135           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1136         { .bitrate = 110,
1137           .hw_value = 0x20,
1138           .hw_value_short = 0x20,
1139           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1140         { .bitrate = 60,
1141           .hw_value = 0x8,
1142           .hw_value_short = 0x8, },
1143         { .bitrate = 90,
1144           .hw_value = 0x10,
1145           .hw_value_short = 0x10, },
1146         { .bitrate = 120,
1147           .hw_value = 0x40,
1148           .hw_value_short = 0x40, },
1149         { .bitrate = 180,
1150           .hw_value = 0x80,
1151           .hw_value_short = 0x80, },
1152         { .bitrate = 240,
1153           .hw_value = 0x200,
1154           .hw_value_short = 0x200, },
1155         { .bitrate = 360,
1156          .hw_value = 0x400,
1157          .hw_value_short = 0x400, },
1158         { .bitrate = 480,
1159           .hw_value = 0x800,
1160           .hw_value_short = 0x800, },
1161         { .bitrate = 540,
1162           .hw_value = 0x1000,
1163           .hw_value_short = 0x1000, },
1164 };
1165
1166 /* can't be const, mac80211 writes to this */
1167 static struct ieee80211_channel wl12xx_channels[] = {
1168         { .hw_value = 1, .center_freq = 2412},
1169         { .hw_value = 2, .center_freq = 2417},
1170         { .hw_value = 3, .center_freq = 2422},
1171         { .hw_value = 4, .center_freq = 2427},
1172         { .hw_value = 5, .center_freq = 2432},
1173         { .hw_value = 6, .center_freq = 2437},
1174         { .hw_value = 7, .center_freq = 2442},
1175         { .hw_value = 8, .center_freq = 2447},
1176         { .hw_value = 9, .center_freq = 2452},
1177         { .hw_value = 10, .center_freq = 2457},
1178         { .hw_value = 11, .center_freq = 2462},
1179         { .hw_value = 12, .center_freq = 2467},
1180         { .hw_value = 13, .center_freq = 2472},
1181 };
1182
1183 /* can't be const, mac80211 writes to this */
1184 static struct ieee80211_supported_band wl12xx_band_2ghz = {
1185         .channels = wl12xx_channels,
1186         .n_channels = ARRAY_SIZE(wl12xx_channels),
1187         .bitrates = wl12xx_rates,
1188         .n_bitrates = ARRAY_SIZE(wl12xx_rates),
1189 };
1190
1191 static const struct ieee80211_ops wl12xx_ops = {
1192         .start = wl12xx_op_start,
1193         .stop = wl12xx_op_stop,
1194         .add_interface = wl12xx_op_add_interface,
1195         .remove_interface = wl12xx_op_remove_interface,
1196         .config = wl12xx_op_config,
1197         .configure_filter = wl12xx_op_configure_filter,
1198         .tx = wl12xx_op_tx,
1199         .set_key = wl12xx_op_set_key,
1200         .hw_scan = wl12xx_op_hw_scan,
1201         .bss_info_changed = wl12xx_op_bss_info_changed,
1202         .set_rts_threshold = wl12xx_op_set_rts_threshold,
1203 };
1204
1205 static int wl12xx_register_hw(struct wl12xx *wl)
1206 {
1207         int ret;
1208
1209         if (wl->mac80211_registered)
1210                 return 0;
1211
1212         SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1213
1214         ret = ieee80211_register_hw(wl->hw);
1215         if (ret < 0) {
1216                 wl12xx_error("unable to register mac80211 hw: %d", ret);
1217                 return ret;
1218         }
1219
1220         wl->mac80211_registered = true;
1221
1222         wl12xx_notice("loaded");
1223
1224         return 0;
1225 }
1226
1227 static int wl12xx_init_ieee80211(struct wl12xx *wl)
1228 {
1229         /* The tx descriptor buffer and the TKIP space */
1230         wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
1231                 + WL1251_TKIP_IV_SPACE;
1232
1233         /* unit us */
1234         /* FIXME: find a proper value */
1235         wl->hw->channel_change_time = 10000;
1236
1237         wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1238                 IEEE80211_HW_NOISE_DBM;
1239
1240         wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1241         wl->hw->wiphy->max_scan_ssids = 1;
1242         wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl12xx_band_2ghz;
1243
1244         SET_IEEE80211_DEV(wl->hw, &wl->spi->dev);
1245
1246         return 0;
1247 }
1248
1249 #define WL12XX_DEFAULT_CHANNEL 1
1250 static int __devinit wl12xx_probe(struct spi_device *spi)
1251 {
1252         struct wl12xx_platform_data *pdata;
1253         struct ieee80211_hw *hw;
1254         struct wl12xx *wl;
1255         int ret, i;
1256         static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1257
1258         pdata = spi->dev.platform_data;
1259         if (!pdata) {
1260                 wl12xx_error("no platform data");
1261                 return -ENODEV;
1262         }
1263
1264         hw = ieee80211_alloc_hw(sizeof(*wl), &wl12xx_ops);
1265         if (!hw) {
1266                 wl12xx_error("could not alloc ieee80211_hw");
1267                 return -ENOMEM;
1268         }
1269
1270         wl = hw->priv;
1271         memset(wl, 0, sizeof(*wl));
1272
1273         wl->hw = hw;
1274         dev_set_drvdata(&spi->dev, wl);
1275         wl->spi = spi;
1276
1277         wl->data_in_count = 0;
1278
1279         skb_queue_head_init(&wl->tx_queue);
1280
1281         INIT_WORK(&wl->filter_work, wl12xx_filter_work);
1282         wl->channel = WL12XX_DEFAULT_CHANNEL;
1283         wl->scanning = false;
1284         wl->default_key = 0;
1285         wl->listen_int = 1;
1286         wl->rx_counter = 0;
1287         wl->rx_handled = 0;
1288         wl->rx_current_buffer = 0;
1289         wl->rx_last_id = 0;
1290         wl->rx_config = WL12XX_DEFAULT_RX_CONFIG;
1291         wl->rx_filter = WL12XX_DEFAULT_RX_FILTER;
1292         wl->elp = false;
1293         wl->psm = 0;
1294         wl->psm_requested = false;
1295         wl->tx_queue_stopped = false;
1296         wl->power_level = WL12XX_DEFAULT_POWER_LEVEL;
1297
1298         /* We use the default power on sleep time until we know which chip
1299          * we're using */
1300         wl->chip.power_on_sleep = WL12XX_DEFAULT_POWER_ON_SLEEP;
1301
1302         for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1303                 wl->tx_frames[i] = NULL;
1304
1305         wl->next_tx_complete = 0;
1306
1307         /*
1308          * In case our MAC address is not correctly set,
1309          * we use a random but Nokia MAC.
1310          */
1311         memcpy(wl->mac_addr, nokia_oui, 3);
1312         get_random_bytes(wl->mac_addr + 3, 3);
1313
1314         wl->state = WL12XX_STATE_OFF;
1315         mutex_init(&wl->mutex);
1316
1317         wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
1318         wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
1319
1320         wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1321         if (!wl->rx_descriptor) {
1322                 wl12xx_error("could not allocate memory for rx descriptor");
1323                 ret = -ENOMEM;
1324                 goto out_free;
1325         }
1326
1327         /* This is the only SPI value that we need to set here, the rest
1328          * comes from the board-peripherals file */
1329         spi->bits_per_word = 32;
1330
1331         ret = spi_setup(spi);
1332         if (ret < 0) {
1333                 wl12xx_error("spi_setup failed");
1334                 goto out_free;
1335         }
1336
1337         wl->set_power = pdata->set_power;
1338         if (!wl->set_power) {
1339                 wl12xx_error("set power function missing in platform data");
1340                 ret = -ENODEV;
1341                 goto out_free;
1342         }
1343
1344         wl->irq = spi->irq;
1345         if (wl->irq < 0) {
1346                 wl12xx_error("irq missing in platform data");
1347                 ret = -ENODEV;
1348                 goto out_free;
1349         }
1350
1351         ret = request_irq(wl->irq, wl12xx_irq, 0, DRIVER_NAME, wl);
1352         if (ret < 0) {
1353                 wl12xx_error("request_irq() failed: %d", ret);
1354                 goto out_free;
1355         }
1356
1357         set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING);
1358
1359         disable_irq(wl->irq);
1360
1361         ret = wl12xx_init_ieee80211(wl);
1362         if (ret)
1363                 goto out_irq;
1364
1365         ret = wl12xx_register_hw(wl);
1366         if (ret)
1367                 goto out_irq;
1368
1369         wl12xx_debugfs_init(wl);
1370
1371         wl12xx_notice("initialized");
1372
1373         return 0;
1374
1375  out_irq:
1376         free_irq(wl->irq, wl);
1377
1378  out_free:
1379         kfree(wl->rx_descriptor);
1380         wl->rx_descriptor = NULL;
1381
1382         ieee80211_free_hw(hw);
1383
1384         return ret;
1385 }
1386
1387 static int __devexit wl12xx_remove(struct spi_device *spi)
1388 {
1389         struct wl12xx *wl = dev_get_drvdata(&spi->dev);
1390
1391         ieee80211_unregister_hw(wl->hw);
1392
1393         wl12xx_debugfs_exit(wl);
1394
1395         free_irq(wl->irq, wl);
1396         kfree(wl->target_mem_map);
1397         kfree(wl->data_path);
1398         kfree(wl->fw);
1399         wl->fw = NULL;
1400         kfree(wl->nvs);
1401         wl->nvs = NULL;
1402
1403         kfree(wl->rx_descriptor);
1404         wl->rx_descriptor = NULL;
1405
1406         ieee80211_free_hw(wl->hw);
1407
1408         return 0;
1409 }
1410
1411
1412 static struct spi_driver wl12xx_spi_driver = {
1413         .driver = {
1414                 .name           = "wl12xx",
1415                 .bus            = &spi_bus_type,
1416                 .owner          = THIS_MODULE,
1417         },
1418
1419         .probe          = wl12xx_probe,
1420         .remove         = __devexit_p(wl12xx_remove),
1421 };
1422
1423 static int __init wl12xx_init(void)
1424 {
1425         int ret;
1426
1427         ret = spi_register_driver(&wl12xx_spi_driver);
1428         if (ret < 0) {
1429                 wl12xx_error("failed to register spi driver: %d", ret);
1430                 goto out;
1431         }
1432
1433 out:
1434         return ret;
1435 }
1436
1437 static void __exit wl12xx_exit(void)
1438 {
1439         spi_unregister_driver(&wl12xx_spi_driver);
1440
1441         wl12xx_notice("unloaded");
1442 }
1443
1444 module_init(wl12xx_init);
1445 module_exit(wl12xx_exit);
1446
1447 MODULE_LICENSE("GPL");
1448 MODULE_AUTHOR("Kalle Valo <Kalle.Valo@nokia.com>, "
1449                 "Luciano Coelho <luciano.coelho@nokia.com>");