Pileus Git - ~andy/linux/blob - drivers/net/wireless/wl12xx/wl1271_main.c

   1 /*
   2  * This file is part of wl1271
   3  *
   4  * Copyright (C) 2008-2009 Nokia Corporation
   5  *
   6  * Contact: Luciano Coelho <luciano.coelho@nokia.com>
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License
  10  * version 2 as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  20  * 02110-1301 USA
  21  *
  22  */
  23
  24 #include <linux/module.h>
  25 #include <linux/platform_device.h>
  26 #include <linux/interrupt.h>
  27 #include <linux/firmware.h>
  28 #include <linux/delay.h>
  29 #include <linux/irq.h>
  30 #include <linux/spi/spi.h>
  31 #include <linux/crc32.h>
  32 #include <linux/etherdevice.h>
  33 #include <linux/vmalloc.h>
  34 #include <linux/spi/wl12xx.h>
  35
  36 #include "wl1271.h"
  37 #include "wl12xx_80211.h"
  38 #include "wl1271_reg.h"
  39 #include "wl1271_spi.h"
  40 #include "wl1271_event.h"
  41 #include "wl1271_tx.h"
  42 #include "wl1271_rx.h"
  43 #include "wl1271_ps.h"
  44 #include "wl1271_init.h"
  45 #include "wl1271_debugfs.h"
  46 #include "wl1271_cmd.h"
  47 #include "wl1271_boot.h"
  48
  49 static int wl1271_plt_init(struct wl1271 *wl)
  50 {
  51         int ret;
  52
  53         ret = wl1271_acx_init_mem_config(wl);
  54         if (ret < 0)
  55                 return ret;
  56
  57         ret = wl1271_cmd_data_path(wl, wl->channel, 1);
  58         if (ret < 0)
  59                 return ret;
  60
  61         return 0;
  62 }
  63
  64 static void wl1271_disable_interrupts(struct wl1271 *wl)
  65 {
  66         disable_irq(wl->irq);
  67 }
  68
  69 static void wl1271_power_off(struct wl1271 *wl)
  70 {
  71         wl->set_power(false);
  72 }
  73
  74 static void wl1271_power_on(struct wl1271 *wl)
  75 {
  76         wl->set_power(true);
  77 }
  78
  79 static void wl1271_fw_status(struct wl1271 *wl, struct wl1271_fw_status *status)
  80 {
  81         u32 total = 0;
  82         int i;
  83
  84         /*
  85          * FIXME: Reading the FW status directly from the registers seems to
  86          * be the right thing to do, but it doesn't work.  And in the
  87          * reference driver, there is a workaround called
  88          * USE_SDIO_24M_WORKAROUND, which reads the status from memory
  89          * instead, so we do the same here.
  90          */
  91
  92         wl1271_spi_mem_read(wl, STATUS_MEM_ADDRESS, status, sizeof(*status));
  93
  94         wl1271_debug(DEBUG_IRQ, "intr: 0x%x (fw_rx_counter = %d, "
  95                      "drv_rx_counter = %d, tx_results_counter = %d)",
  96                      status->intr,
  97                      status->fw_rx_counter,
  98                      status->drv_rx_counter,
  99                      status->tx_results_counter);
 100
 101         /* update number of available TX blocks */
 102         for (i = 0; i < NUM_TX_QUEUES; i++) {
 103                 u32 cnt = status->tx_released_blks[i] - wl->tx_blocks_freed[i];
 104                 wl->tx_blocks_freed[i] = status->tx_released_blks[i];
 105                 wl->tx_blocks_available += cnt;
 106                 total += cnt;
 107         }
 108
 109         /* if more blocks are available now, schedule some tx work */
 110         if (total && !skb_queue_empty(&wl->tx_queue))
 111                 ieee80211_queue_work(wl->hw, &wl->tx_work);
 112
 113         /* update the host-chipset time offset */
 114         wl->time_offset = jiffies_to_usecs(jiffies) - status->fw_localtime;
 115 }
 116
 117 #define WL1271_IRQ_MAX_LOOPS 10
 118 static void wl1271_irq_work(struct work_struct *work)
 119 {
 120         u32 intr, ctr = WL1271_IRQ_MAX_LOOPS;
 121         int ret;
 122         struct wl1271 *wl =
 123                 container_of(work, struct wl1271, irq_work);
 124
 125         mutex_lock(&wl->mutex);
 126
 127         wl1271_debug(DEBUG_IRQ, "IRQ work");
 128
 129         if (wl->state == WL1271_STATE_OFF)
 130                 goto out;
 131
 132         ret = wl1271_ps_elp_wakeup(wl, true);
 133         if (ret < 0)
 134                 goto out;
 135
 136         wl1271_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1271_ACX_INTR_ALL);
 137
 138         intr = wl1271_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
 139         if (!intr) {
 140                 wl1271_debug(DEBUG_IRQ, "Zero interrupt received.");
 141                 goto out_sleep;
 142         }
 143
 144         intr &= WL1271_INTR_MASK;
 145
 146         do {
 147                 wl1271_fw_status(wl, wl->fw_status);
 148
 149
 150                 if (intr & (WL1271_ACX_INTR_EVENT_A |
 151                             WL1271_ACX_INTR_EVENT_B)) {
 152                         wl1271_debug(DEBUG_IRQ,
 153                                      "WL1271_ACX_INTR_EVENT (0x%x)", intr);
 154                         if (intr & WL1271_ACX_INTR_EVENT_A)
 155                                 wl1271_event_handle(wl, 0);
 156                         else
 157                                 wl1271_event_handle(wl, 1);
 158                 }
 159
 160                 if (intr & WL1271_ACX_INTR_INIT_COMPLETE)
 161                         wl1271_debug(DEBUG_IRQ,
 162                                      "WL1271_ACX_INTR_INIT_COMPLETE");
 163
 164                 if (intr & WL1271_ACX_INTR_HW_AVAILABLE)
 165                         wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_HW_AVAILABLE");
 166
 167                 if (intr & WL1271_ACX_INTR_DATA) {
 168                         u8 tx_res_cnt = wl->fw_status->tx_results_counter -
 169                                 wl->tx_results_count;
 170
 171                         wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_DATA");
 172
 173                         /* check for tx results */
 174                         if (tx_res_cnt)
 175                                 wl1271_tx_complete(wl, tx_res_cnt);
 176
 177                         wl1271_rx(wl, wl->fw_status);
 178                 }
 179
 180                 intr = wl1271_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
 181                 intr &= WL1271_INTR_MASK;
 182         } while (intr && --ctr);
 183
 184 out_sleep:
 185         wl1271_reg_write32(wl, ACX_REG_INTERRUPT_MASK,
 186                            WL1271_ACX_INTR_ALL & ~(WL1271_INTR_MASK));
 187         wl1271_ps_elp_sleep(wl);
 188
 189 out:
 190         mutex_unlock(&wl->mutex);
 191 }
 192
 193 static irqreturn_t wl1271_irq(int irq, void *cookie)
 194 {
 195         struct wl1271 *wl;
 196         unsigned long flags;
 197
 198         wl1271_debug(DEBUG_IRQ, "IRQ");
 199
 200         wl = cookie;
 201
 202         /* complete the ELP completion */
 203         spin_lock_irqsave(&wl->wl_lock, flags);
 204         if (wl->elp_compl) {
 205                 complete(wl->elp_compl);
 206                 wl->elp_compl = NULL;
 207         }
 208
 209         ieee80211_queue_work(wl->hw, &wl->irq_work);
 210         spin_unlock_irqrestore(&wl->wl_lock, flags);
 211
 212         return IRQ_HANDLED;
 213 }
 214
 215 static int wl1271_fetch_firmware(struct wl1271 *wl)
 216 {
 217         const struct firmware *fw;
 218         int ret;
 219
 220         ret = request_firmware(&fw, WL1271_FW_NAME, &wl->spi->dev);
 221
 222         if (ret < 0) {
 223                 wl1271_error("could not get firmware: %d", ret);
 224                 return ret;
 225         }
 226
 227         if (fw->size % 4) {
 228                 wl1271_error("firmware size is not multiple of 32 bits: %zu",
 229                              fw->size);
 230                 ret = -EILSEQ;
 231                 goto out;
 232         }
 233
 234         wl->fw_len = fw->size;
 235         wl->fw = vmalloc(wl->fw_len);
 236
 237         if (!wl->fw) {
 238                 wl1271_error("could not allocate memory for the firmware");
 239                 ret = -ENOMEM;
 240                 goto out;
 241         }
 242
 243         memcpy(wl->fw, fw->data, wl->fw_len);
 244
 245         ret = 0;
 246
 247 out:
 248         release_firmware(fw);
 249
 250         return ret;
 251 }
 252
 253 static int wl1271_fetch_nvs(struct wl1271 *wl)
 254 {
 255         const struct firmware *fw;
 256         int ret;
 257
 258         ret = request_firmware(&fw, WL1271_NVS_NAME, &wl->spi->dev);
 259
 260         if (ret < 0) {
 261                 wl1271_error("could not get nvs file: %d", ret);
 262                 return ret;
 263         }
 264
 265         if (fw->size % 4) {
 266                 wl1271_error("nvs size is not multiple of 32 bits: %zu",
 267                              fw->size);
 268                 ret = -EILSEQ;
 269                 goto out;
 270         }
 271
 272         wl->nvs_len = fw->size;
 273         wl->nvs = kmalloc(wl->nvs_len, GFP_KERNEL);
 274
 275         if (!wl->nvs) {
 276                 wl1271_error("could not allocate memory for the nvs file");
 277                 ret = -ENOMEM;
 278                 goto out;
 279         }
 280
 281         memcpy(wl->nvs, fw->data, wl->nvs_len);
 282
 283         ret = 0;
 284
 285 out:
 286         release_firmware(fw);
 287
 288         return ret;
 289 }
 290
 291 static void wl1271_fw_wakeup(struct wl1271 *wl)
 292 {
 293         u32 elp_reg;
 294
 295         elp_reg = ELPCTRL_WAKE_UP;
 296         wl1271_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
 297 }
 298
 299 static int wl1271_setup(struct wl1271 *wl)
 300 {
 301         wl->fw_status = kmalloc(sizeof(*wl->fw_status), GFP_KERNEL);
 302         if (!wl->fw_status)
 303                 return -ENOMEM;
 304
 305         wl->tx_res_if = kmalloc(sizeof(*wl->tx_res_if), GFP_KERNEL);
 306         if (!wl->tx_res_if) {
 307                 kfree(wl->fw_status);
 308                 return -ENOMEM;
 309         }
 310
 311         INIT_WORK(&wl->irq_work, wl1271_irq_work);
 312         INIT_WORK(&wl->tx_work, wl1271_tx_work);
 313         return 0;
 314 }
 315
 316 static int wl1271_chip_wakeup(struct wl1271 *wl)
 317 {
 318         struct wl1271_partition_set partition;
 319         int ret = 0;
 320
 321         wl1271_power_on(wl);
 322         msleep(WL1271_POWER_ON_SLEEP);
 323         wl1271_spi_reset(wl);
 324         wl1271_spi_init(wl);
 325
 326         /* We don't need a real memory partition here, because we only want
 327          * to use the registers at this point. */
 328         memset(&partition, 0, sizeof(partition));
 329         partition.reg.start = REGISTERS_BASE;
 330         partition.reg.size = REGISTERS_DOWN_SIZE;
 331         wl1271_set_partition(wl, &partition);
 332
 333         /* ELP module wake up */
 334         wl1271_fw_wakeup(wl);
 335
 336         /* whal_FwCtrl_BootSm() */
 337
 338         /* 0. read chip id from CHIP_ID */
 339         wl->chip.id = wl1271_reg_read32(wl, CHIP_ID_B);
 340
 341         /* 1. check if chip id is valid */
 342
 343         switch (wl->chip.id) {
 344         case CHIP_ID_1271_PG10:
 345                 wl1271_warning("chip id 0x%x (1271 PG10) support is obsolete",
 346                                wl->chip.id);
 347
 348                 ret = wl1271_setup(wl);
 349                 if (ret < 0)
 350                         goto out;
 351                 break;
 352         case CHIP_ID_1271_PG20:
 353                 wl1271_debug(DEBUG_BOOT, "chip id 0x%x (1271 PG20)",
 354                              wl->chip.id);
 355
 356                 ret = wl1271_setup(wl);
 357                 if (ret < 0)
 358                         goto out;
 359                 break;
 360         default:
 361                 wl1271_error("unsupported chip id: 0x%x", wl->chip.id);
 362                 ret = -ENODEV;
 363                 goto out;
 364         }
 365
 366         if (wl->fw == NULL) {
 367                 ret = wl1271_fetch_firmware(wl);
 368                 if (ret < 0)
 369                         goto out;
 370         }
 371
 372         /* No NVS from netlink, try to get it from the filesystem */
 373         if (wl->nvs == NULL) {
 374                 ret = wl1271_fetch_nvs(wl);
 375                 if (ret < 0)
 376                         goto out;
 377         }
 378
 379 out:
 380         return ret;
 381 }
 382
 383 struct wl1271_filter_params {
 384         unsigned int filters;
 385         unsigned int changed;
 386         int mc_list_length;
 387         u8 mc_list[ACX_MC_ADDRESS_GROUP_MAX][ETH_ALEN];
 388 };
 389
 390 #define WL1271_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
 391                                   FIF_ALLMULTI | \
 392                                   FIF_FCSFAIL | \
 393                                   FIF_BCN_PRBRESP_PROMISC | \
 394                                   FIF_CONTROL | \
 395                                   FIF_OTHER_BSS)
 396
 397 static void wl1271_filter_work(struct work_struct *work)
 398 {
 399         struct wl1271 *wl =
 400                 container_of(work, struct wl1271, filter_work);
 401         struct wl1271_filter_params *fp;
 402         unsigned long flags;
 403         bool enabled = true;
 404         int ret;
 405
 406         /* first, get the filter parameters */
 407         spin_lock_irqsave(&wl->wl_lock, flags);
 408         fp = wl->filter_params;
 409         wl->filter_params = NULL;
 410         spin_unlock_irqrestore(&wl->wl_lock, flags);
 411
 412         if (!fp)
 413                 return;
 414
 415         /* then, lock the mutex without risk of lock-up */
 416         mutex_lock(&wl->mutex);
 417
 418         if (wl->state == WL1271_STATE_OFF)
 419                 goto out;
 420
 421         ret = wl1271_ps_elp_wakeup(wl, false);
 422         if (ret < 0)
 423                 goto out;
 424
 425         /* configure the mc filter regardless of the changed flags */
 426         if (fp->filters & FIF_ALLMULTI)
 427                 enabled = false;
 428
 429         ret = wl1271_acx_group_address_tbl(wl, enabled,
 430                                            fp->mc_list, fp->mc_list_length);
 431         if (ret < 0)
 432                 goto out_sleep;
 433
 434         /* determine, whether supported filter values have changed */
 435         if (fp->changed == 0)
 436                 goto out;
 437
 438         /* apply configured filters */
 439         ret = wl1271_cmd_join(wl);
 440         if (ret < 0)
 441                 goto out_sleep;
 442
 443 out_sleep:
 444         wl1271_ps_elp_sleep(wl);
 445
 446 out:
 447         mutex_unlock(&wl->mutex);
 448         kfree(fp);
 449 }
 450
 451 int wl1271_plt_start(struct wl1271 *wl)
 452 {
 453         int ret;
 454
 455         mutex_lock(&wl->mutex);
 456
 457         wl1271_notice("power up");
 458
 459         if (wl->state != WL1271_STATE_OFF) {
 460                 wl1271_error("cannot go into PLT state because not "
 461                              "in off state: %d", wl->state);
 462                 ret = -EBUSY;
 463                 goto out;
 464         }
 465
 466         wl->state = WL1271_STATE_PLT;
 467
 468         ret = wl1271_chip_wakeup(wl);
 469         if (ret < 0)
 470                 goto out;
 471
 472         ret = wl1271_boot(wl);
 473         if (ret < 0)
 474                 goto out;
 475
 476         wl1271_notice("firmware booted in PLT mode (%s)", wl->chip.fw_ver);
 477
 478         ret = wl1271_plt_init(wl);
 479         if (ret < 0)
 480                 goto out;
 481
 482 out:
 483         mutex_unlock(&wl->mutex);
 484
 485         return ret;
 486 }
 487
 488 int wl1271_plt_stop(struct wl1271 *wl)
 489 {
 490         int ret = 0;
 491
 492         mutex_lock(&wl->mutex);
 493
 494         wl1271_notice("power down");
 495
 496         if (wl->state != WL1271_STATE_PLT) {
 497                 wl1271_error("cannot power down because not in PLT "
 498                              "state: %d", wl->state);
 499                 ret = -EBUSY;
 500                 goto out;
 501         }
 502
 503         wl1271_disable_interrupts(wl);
 504         wl1271_power_off(wl);
 505
 506         wl->state = WL1271_STATE_OFF;
 507
 508 out:
 509         mutex_unlock(&wl->mutex);
 510
 511         return ret;
 512 }
 513
 514
 515 static int wl1271_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 516 {
 517         struct wl1271 *wl = hw->priv;
 518
 519         skb_queue_tail(&wl->tx_queue, skb);
 520
 521         /*
 522          * The chip specific setup must run before the first TX packet -
 523          * before that, the tx_work will not be initialized!
 524          */
 525
 526         ieee80211_queue_work(wl->hw, &wl->tx_work);
 527
 528         /*
 529          * The workqueue is slow to process the tx_queue and we need stop
 530          * the queue here, otherwise the queue will get too long.
 531          */
 532         if (skb_queue_len(&wl->tx_queue) >= WL1271_TX_QUEUE_MAX_LENGTH) {
 533                 ieee80211_stop_queues(wl->hw);
 534
 535                 /*
 536                  * FIXME: this is racy, the variable is not properly
 537                  * protected. Maybe fix this by removing the stupid
 538                  * variable altogether and checking the real queue state?
 539                  */
 540                 wl->tx_queue_stopped = true;
 541         }
 542
 543         return NETDEV_TX_OK;
 544 }
 545
 546 static int wl1271_op_start(struct ieee80211_hw *hw)
 547 {
 548         struct wl1271 *wl = hw->priv;
 549         int ret = 0;
 550
 551         wl1271_debug(DEBUG_MAC80211, "mac80211 start");
 552
 553         mutex_lock(&wl->mutex);
 554
 555         if (wl->state != WL1271_STATE_OFF) {
 556                 wl1271_error("cannot start because not in off state: %d",
 557                              wl->state);
 558                 ret = -EBUSY;
 559                 goto out;
 560         }
 561
 562         ret = wl1271_chip_wakeup(wl);
 563         if (ret < 0)
 564                 goto out;
 565
 566         ret = wl1271_boot(wl);
 567         if (ret < 0)
 568                 goto out;
 569
 570         ret = wl1271_hw_init(wl);
 571         if (ret < 0)
 572                 goto out;
 573
 574         wl->state = WL1271_STATE_ON;
 575
 576         wl1271_info("firmware booted (%s)", wl->chip.fw_ver);
 577
 578 out:
 579         if (ret < 0)
 580                 wl1271_power_off(wl);
 581
 582         mutex_unlock(&wl->mutex);
 583
 584         return ret;
 585 }
 586
 587 static void wl1271_op_stop(struct ieee80211_hw *hw)
 588 {
 589         struct wl1271 *wl = hw->priv;
 590         unsigned long flags;
 591         int i;
 592
 593         wl1271_info("down");
 594
 595         wl1271_debug(DEBUG_MAC80211, "mac80211 stop");
 596
 597         /* complete/cancel ongoing work */
 598         cancel_work_sync(&wl->filter_work);
 599         spin_lock_irqsave(&wl->wl_lock, flags);
 600         kfree(wl->filter_params);
 601         wl->filter_params = NULL;
 602         spin_unlock_irqrestore(&wl->wl_lock, flags);
 603
 604         mutex_lock(&wl->mutex);
 605
 606         WARN_ON(wl->state != WL1271_STATE_ON);
 607
 608         if (wl->scanning) {
 609                 mutex_unlock(&wl->mutex);
 610                 ieee80211_scan_completed(wl->hw, true);
 611                 mutex_lock(&wl->mutex);
 612                 wl->scanning = false;
 613         }
 614
 615         wl->state = WL1271_STATE_OFF;
 616
 617         wl1271_disable_interrupts(wl);
 618
 619         mutex_unlock(&wl->mutex);
 620
 621         cancel_work_sync(&wl->irq_work);
 622         cancel_work_sync(&wl->tx_work);
 623         cancel_work_sync(&wl->filter_work);
 624
 625         mutex_lock(&wl->mutex);
 626
 627         /* let's notify MAC80211 about the remaining pending TX frames */
 628         wl1271_tx_flush(wl);
 629         wl1271_power_off(wl);
 630
 631         memset(wl->bssid, 0, ETH_ALEN);
 632         memset(wl->ssid, 0, IW_ESSID_MAX_SIZE + 1);
 633         wl->ssid_len = 0;
 634         wl->listen_int = 1;
 635         wl->bss_type = MAX_BSS_TYPE;
 636         wl->band = IEEE80211_BAND_2GHZ;
 637
 638         wl->rx_counter = 0;
 639         wl->elp = false;
 640         wl->psm = 0;
 641         wl->tx_queue_stopped = false;
 642         wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
 643         wl->tx_blocks_available = 0;
 644         wl->tx_results_count = 0;
 645         wl->tx_packets_count = 0;
 646         wl->tx_security_last_seq = 0;
 647         wl->tx_security_seq_16 = 0;
 648         wl->tx_security_seq_32 = 0;
 649         wl->time_offset = 0;
 650         wl->session_counter = 0;
 651         wl->joined = false;
 652
 653         for (i = 0; i < NUM_TX_QUEUES; i++)
 654                 wl->tx_blocks_freed[i] = 0;
 655
 656         wl1271_debugfs_reset(wl);
 657         mutex_unlock(&wl->mutex);
 658 }
 659
 660 static int wl1271_op_add_interface(struct ieee80211_hw *hw,
 661                                    struct ieee80211_if_init_conf *conf)
 662 {
 663         struct wl1271 *wl = hw->priv;
 664         int ret = 0;
 665
 666         wl1271_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
 667                      conf->type, conf->mac_addr);
 668
 669         mutex_lock(&wl->mutex);
 670         if (wl->vif) {
 671                 ret = -EBUSY;
 672                 goto out;
 673         }
 674
 675         wl->vif = conf->vif;
 676
 677         switch (conf->type) {
 678         case NL80211_IFTYPE_STATION:
 679                 wl->bss_type = BSS_TYPE_STA_BSS;
 680                 break;
 681         case NL80211_IFTYPE_ADHOC:
 682                 wl->bss_type = BSS_TYPE_IBSS;
 683                 break;
 684         default:
 685                 ret = -EOPNOTSUPP;
 686                 goto out;
 687         }
 688
 689         /* FIXME: what if conf->mac_addr changes? */
 690
 691 out:
 692         mutex_unlock(&wl->mutex);
 693         return ret;
 694 }
 695
 696 static void wl1271_op_remove_interface(struct ieee80211_hw *hw,
 697                                          struct ieee80211_if_init_conf *conf)
 698 {
 699         struct wl1271 *wl = hw->priv;
 700
 701         mutex_lock(&wl->mutex);
 702         wl1271_debug(DEBUG_MAC80211, "mac80211 remove interface");
 703         wl->vif = NULL;
 704         mutex_unlock(&wl->mutex);
 705 }
 706
 707 #if 0
 708 static int wl1271_op_config_interface(struct ieee80211_hw *hw,
 709                                       struct ieee80211_vif *vif,
 710                                       struct ieee80211_if_conf *conf)
 711 {
 712         struct wl1271 *wl = hw->priv;
 713         struct sk_buff *beacon;
 714         int ret;
 715
 716         wl1271_debug(DEBUG_MAC80211, "mac80211 config_interface bssid %pM",
 717                      conf->bssid);
 718         wl1271_dump_ascii(DEBUG_MAC80211, "ssid: ", conf->ssid,
 719                           conf->ssid_len);
 720
 721         mutex_lock(&wl->mutex);
 722
 723         ret = wl1271_ps_elp_wakeup(wl, false);
 724         if (ret < 0)
 725                 goto out;
 726
 727         memcpy(wl->bssid, conf->bssid, ETH_ALEN);
 728
 729         ret = wl1271_cmd_build_null_data(wl);
 730         if (ret < 0)
 731                 goto out_sleep;
 732
 733         wl->ssid_len = conf->ssid_len;
 734         if (wl->ssid_len)
 735                 memcpy(wl->ssid, conf->ssid, wl->ssid_len);
 736
 737         if (wl->bss_type != BSS_TYPE_IBSS) {
 738                 ret = wl1271_cmd_join(wl);
 739                 if (ret < 0)
 740                         goto out_sleep;
 741         }
 742
 743         if (conf->changed & IEEE80211_IFCC_BEACON) {
 744                 beacon = ieee80211_beacon_get(hw, vif);
 745                 ret = wl1271_cmd_template_set(wl, CMD_TEMPL_BEACON,
 746                                               beacon->data, beacon->len);
 747
 748                 if (ret < 0) {
 749                         dev_kfree_skb(beacon);
 750                         goto out_sleep;
 751                 }
 752
 753                 ret = wl1271_cmd_template_set(wl, CMD_TEMPL_PROBE_RESPONSE,
 754                                               beacon->data, beacon->len);
 755
 756                 dev_kfree_skb(beacon);
 757
 758                 if (ret < 0)
 759                         goto out_sleep;
 760
 761                 ret = wl1271_cmd_join(wl);
 762
 763                 if (ret < 0)
 764                         goto out_sleep;
 765         }
 766
 767 out_sleep:
 768         wl1271_ps_elp_sleep(wl);
 769
 770 out:
 771         mutex_unlock(&wl->mutex);
 772
 773         return ret;
 774 }
 775 #endif
 776
 777 static int wl1271_op_config(struct ieee80211_hw *hw, u32 changed)
 778 {
 779         struct wl1271 *wl = hw->priv;
 780         struct ieee80211_conf *conf = &hw->conf;
 781         int channel, ret = 0;
 782
 783         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
 784
 785         wl1271_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
 786                      channel,
 787                      conf->flags & IEEE80211_CONF_PS ? "on" : "off",
 788                      conf->power_level);
 789
 790         mutex_lock(&wl->mutex);
 791
 792         wl->band = conf->channel->band;
 793
 794         ret = wl1271_ps_elp_wakeup(wl, false);
 795         if (ret < 0)
 796                 goto out;
 797
 798         if (channel != wl->channel) {
 799                 u8 old_channel = wl->channel;
 800                 wl->channel = channel;
 801
 802                 ret = wl1271_cmd_join(wl);
 803                 if (ret < 0) {
 804                         wl->channel = old_channel;
 805                         goto out_sleep;
 806                 }
 807         }
 808
 809         ret = wl1271_cmd_build_null_data(wl);
 810         if (ret < 0)
 811                 goto out_sleep;
 812
 813         if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
 814                 wl1271_info("psm enabled");
 815
 816                 wl->psm_requested = true;
 817
 818                 /*
 819                  * We enter PSM only if we're already associated.
 820                  * If we're not, we'll enter it when joining an SSID,
 821                  * through the bss_info_changed() hook.
 822                  */
 823                 ret = wl1271_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
 824         } else if (!(conf->flags & IEEE80211_CONF_PS) &&
 825                    wl->psm_requested) {
 826                 wl1271_info("psm disabled");
 827
 828                 wl->psm_requested = false;
 829
 830                 if (wl->psm)
 831                         ret = wl1271_ps_set_mode(wl, STATION_ACTIVE_MODE);
 832         }
 833
 834         if (conf->power_level != wl->power_level) {
 835                 ret = wl1271_acx_tx_power(wl, conf->power_level);
 836                 if (ret < 0)
 837                         goto out;
 838
 839                 wl->power_level = conf->power_level;
 840         }
 841
 842 out_sleep:
 843         wl1271_ps_elp_sleep(wl);
 844
 845 out:
 846         mutex_unlock(&wl->mutex);
 847
 848         return ret;
 849 }
 850
 851 static u64 wl1271_op_prepare_multicast(struct ieee80211_hw *hw, int mc_count,
 852                                        struct dev_addr_list *mc_list)
 853 {
 854         struct wl1271 *wl = hw->priv;
 855         struct wl1271_filter_params *fp;
 856         unsigned long flags;
 857         int i;
 858
 859         /*
 860          * FIXME: we should return a hash that will be passed to
 861          * configure_filter() instead of saving everything in the context.
 862          */
 863
 864         fp = kzalloc(sizeof(*fp), GFP_KERNEL);
 865         if (!fp) {
 866                 wl1271_error("Out of memory setting filters.");
 867                 return 0;
 868         }
 869
 870         /* update multicast filtering parameters */
 871         if (mc_count > ACX_MC_ADDRESS_GROUP_MAX) {
 872                 mc_count = 0;
 873                 fp->filters |= FIF_ALLMULTI;
 874         }
 875
 876         fp->mc_list_length = 0;
 877         for (i = 0; i < mc_count; i++) {
 878                 if (mc_list->da_addrlen == ETH_ALEN) {
 879                         memcpy(fp->mc_list[fp->mc_list_length],
 880                                mc_list->da_addr, ETH_ALEN);
 881                         fp->mc_list_length++;
 882                 } else
 883                         wl1271_warning("Unknown mc address length.");
 884         }
 885
 886         spin_lock_irqsave(&wl->wl_lock, flags);
 887         kfree(wl->filter_params);
 888         wl->filter_params = fp;
 889         spin_unlock_irqrestore(&wl->wl_lock, flags);
 890
 891         return 1;
 892 }
 893
 894 static void wl1271_op_configure_filter(struct ieee80211_hw *hw,
 895                                        unsigned int changed,
 896                                        unsigned int *total, u64 multicast)
 897 {
 898         struct wl1271 *wl = hw->priv;
 899
 900         wl1271_debug(DEBUG_MAC80211, "mac80211 configure filter");
 901
 902         *total &= WL1271_SUPPORTED_FILTERS;
 903         changed &= WL1271_SUPPORTED_FILTERS;
 904
 905         if (!multicast)
 906                 return;
 907
 908         /*
 909          * FIXME: for now we are still using a workqueue for filter
 910          * configuration, but with the new mac80211, this is not needed,
 911          * since configure_filter can now sleep.  We now have
 912          * prepare_multicast, which needs to be atomic instead.
 913          */
 914
 915         /* store current filter config */
 916         wl->filter_params->filters = *total;
 917         wl->filter_params->changed = changed;
 918
 919         ieee80211_queue_work(wl->hw, &wl->filter_work);
 920 }
 921
 922 static int wl1271_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 923                              struct ieee80211_vif *vif,
 924                              struct ieee80211_sta *sta,
 925                              struct ieee80211_key_conf *key_conf)
 926 {
 927         struct wl1271 *wl = hw->priv;
 928         const u8 *addr;
 929         int ret;
 930         u32 tx_seq_32 = 0;
 931         u16 tx_seq_16 = 0;
 932         u8 key_type;
 933
 934         static const u8 bcast_addr[ETH_ALEN] =
 935                 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 936
 937         wl1271_debug(DEBUG_MAC80211, "mac80211 set key");
 938
 939         addr = sta ? sta->addr : bcast_addr;
 940
 941         wl1271_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
 942         wl1271_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
 943         wl1271_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
 944                      key_conf->alg, key_conf->keyidx,
 945                      key_conf->keylen, key_conf->flags);
 946         wl1271_dump(DEBUG_CRYPT, "KEY: ", key_conf->key, key_conf->keylen);
 947
 948         if (is_zero_ether_addr(addr)) {
 949                 /* We dont support TX only encryption */
 950                 ret = -EOPNOTSUPP;
 951                 goto out;
 952         }
 953
 954         mutex_lock(&wl->mutex);
 955
 956         ret = wl1271_ps_elp_wakeup(wl, false);
 957         if (ret < 0)
 958                 goto out_unlock;
 959
 960         switch (key_conf->alg) {
 961         case ALG_WEP:
 962                 key_type = KEY_WEP;
 963
 964                 key_conf->hw_key_idx = key_conf->keyidx;
 965                 break;
 966         case ALG_TKIP:
 967                 key_type = KEY_TKIP;
 968
 969                 key_conf->hw_key_idx = key_conf->keyidx;
 970                 tx_seq_32 = wl->tx_security_seq_32;
 971                 tx_seq_16 = wl->tx_security_seq_16;
 972                 break;
 973         case ALG_CCMP:
 974                 key_type = KEY_AES;
 975
 976                 key_conf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
 977                 tx_seq_32 = wl->tx_security_seq_32;
 978                 tx_seq_16 = wl->tx_security_seq_16;
 979                 break;
 980         default:
 981                 wl1271_error("Unknown key algo 0x%x", key_conf->alg);
 982
 983                 ret = -EOPNOTSUPP;
 984                 goto out_sleep;
 985         }
 986
 987         switch (cmd) {
 988         case SET_KEY:
 989                 ret = wl1271_cmd_set_key(wl, KEY_ADD_OR_REPLACE,
 990                                          key_conf->keyidx, key_type,
 991                                          key_conf->keylen, key_conf->key,
 992                                          addr, tx_seq_32, tx_seq_16);
 993                 if (ret < 0) {
 994                         wl1271_error("Could not add or replace key");
 995                         goto out_sleep;
 996                 }
 997                 break;
 998
 999         case DISABLE_KEY:
1000                 ret = wl1271_cmd_set_key(wl, KEY_REMOVE,
1001                                          key_conf->keyidx, key_type,
1002                                          key_conf->keylen, key_conf->key,
1003                                          addr, 0, 0);
1004                 if (ret < 0) {
1005                         wl1271_error("Could not remove key");
1006                         goto out_sleep;
1007                 }
1008                 break;
1009
1010         default:
1011                 wl1271_error("Unsupported key cmd 0x%x", cmd);
1012                 ret = -EOPNOTSUPP;
1013                 goto out_sleep;
1014
1015                 break;
1016         }
1017
1018 out_sleep:
1019         wl1271_ps_elp_sleep(wl);
1020
1021 out_unlock:
1022         mutex_unlock(&wl->mutex);
1023
1024 out:
1025         return ret;
1026 }
1027
1028 static int wl1271_op_hw_scan(struct ieee80211_hw *hw,
1029                              struct cfg80211_scan_request *req)
1030 {
1031         struct wl1271 *wl = hw->priv;
1032         int ret;
1033         u8 *ssid = NULL;
1034         size_t ssid_len = 0;
1035
1036         wl1271_debug(DEBUG_MAC80211, "mac80211 hw scan");
1037
1038         if (req->n_ssids) {
1039                 ssid = req->ssids[0].ssid;
1040                 ssid_len = req->ssids[0].ssid_len;
1041         }
1042
1043         mutex_lock(&wl->mutex);
1044
1045         ret = wl1271_ps_elp_wakeup(wl, false);
1046         if (ret < 0)
1047                 goto out;
1048
1049         ret = wl1271_cmd_scan(hw->priv, ssid, ssid_len, 1, 0, 13, 3);
1050
1051         wl1271_ps_elp_sleep(wl);
1052
1053 out:
1054         mutex_unlock(&wl->mutex);
1055
1056         return ret;
1057 }
1058
1059 static int wl1271_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1060 {
1061         struct wl1271 *wl = hw->priv;
1062         int ret;
1063
1064         mutex_lock(&wl->mutex);
1065
1066         ret = wl1271_ps_elp_wakeup(wl, false);
1067         if (ret < 0)
1068                 goto out;
1069
1070         ret = wl1271_acx_rts_threshold(wl, (u16) value);
1071         if (ret < 0)
1072                 wl1271_warning("wl1271_op_set_rts_threshold failed: %d", ret);
1073
1074         wl1271_ps_elp_sleep(wl);
1075
1076 out:
1077         mutex_unlock(&wl->mutex);
1078
1079         return ret;
1080 }
1081
1082 static u32 wl1271_enabled_rates_get(struct wl1271 *wl, u64 basic_rate_set)
1083 {
1084         struct ieee80211_supported_band *band;
1085         u32 enabled_rates = 0;
1086         int bit;
1087
1088         band = wl->hw->wiphy->bands[wl->band];
1089         for (bit = 0; bit < band->n_bitrates; bit++) {
1090                 if (basic_rate_set & 0x1)
1091                         enabled_rates |= band->bitrates[bit].hw_value;
1092                 basic_rate_set >>= 1;
1093         }
1094
1095         return enabled_rates;
1096 }
1097
1098 static void wl1271_op_bss_info_changed(struct ieee80211_hw *hw,
1099                                        struct ieee80211_vif *vif,
1100                                        struct ieee80211_bss_conf *bss_conf,
1101                                        u32 changed)
1102 {
1103         enum wl1271_cmd_ps_mode mode;
1104         struct wl1271 *wl = hw->priv;
1105         int ret;
1106
1107         wl1271_debug(DEBUG_MAC80211, "mac80211 bss info changed");
1108
1109         mutex_lock(&wl->mutex);
1110
1111         ret = wl1271_ps_elp_wakeup(wl, false);
1112         if (ret < 0)
1113                 goto out;
1114
1115         if (changed & BSS_CHANGED_ASSOC) {
1116                 if (bss_conf->assoc) {
1117                         wl->beacon_int = bss_conf->beacon_int;
1118                         wl->dtim_period = bss_conf->dtim_period;
1119                         wl->aid = bss_conf->aid;
1120
1121                         ret = wl1271_cmd_join(wl);
1122                         if (ret < 0) {
1123                                 wl1271_warning("Association configuration "
1124                                                "failed %d", ret);
1125                                 goto out_sleep;
1126                         }
1127
1128                         ret = wl1271_cmd_build_ps_poll(wl, wl->aid);
1129                         if (ret < 0)
1130                                 goto out_sleep;
1131
1132                         ret = wl1271_acx_aid(wl, wl->aid);
1133                         if (ret < 0)
1134                                 goto out_sleep;
1135
1136                         /* If we want to go in PSM but we're not there yet */
1137                         if (wl->psm_requested && !wl->psm) {
1138                                 mode = STATION_POWER_SAVE_MODE;
1139                                 ret = wl1271_ps_set_mode(wl, mode);
1140                                 if (ret < 0)
1141                                         goto out_sleep;
1142                         }
1143                 } else {
1144                         /* use defaults when not associated */
1145                         wl->beacon_int = WL1271_DEFAULT_BEACON_INT;
1146                         wl->dtim_period = WL1271_DEFAULT_DTIM_PERIOD;
1147                         wl->basic_rate_set = WL1271_DEFAULT_BASIC_RATE_SET;
1148                         wl->aid = 0;
1149                 }
1150
1151         }
1152
1153         if (changed & BSS_CHANGED_ERP_SLOT) {
1154                 if (bss_conf->use_short_slot)
1155                         ret = wl1271_acx_slot(wl, SLOT_TIME_SHORT);
1156                 else
1157                         ret = wl1271_acx_slot(wl, SLOT_TIME_LONG);
1158                 if (ret < 0) {
1159                         wl1271_warning("Set slot time failed %d", ret);
1160                         goto out_sleep;
1161                 }
1162         }
1163
1164         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1165                 if (bss_conf->use_short_preamble)
1166                         wl1271_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1167                 else
1168                         wl1271_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1169         }
1170
1171         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1172                 if (bss_conf->use_cts_prot)
1173                         ret = wl1271_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1174                 else
1175                         ret = wl1271_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1176                 if (ret < 0) {
1177                         wl1271_warning("Set ctsprotect failed %d", ret);
1178                         goto out_sleep;
1179                 }
1180         }
1181
1182         if (changed & BSS_CHANGED_BASIC_RATES) {
1183                 wl->basic_rate_set = wl1271_enabled_rates_get(
1184                         wl, bss_conf->basic_rates);
1185                 ret = wl1271_acx_rate_policies(wl, wl->basic_rate_set);
1186
1187                 if (ret < 0) {
1188                         wl1271_warning("Set rate policies failed %d", ret);
1189                         goto out_sleep;
1190                 }
1191                 ret = wl1271_cmd_join(wl);
1192                 if (ret < 0) {
1193                         wl1271_warning("Join with new basic rate "
1194                                        "set failed %d", ret);
1195                         goto out_sleep;
1196                 }
1197         }
1198
1199 out_sleep:
1200         wl1271_ps_elp_sleep(wl);
1201
1202 out:
1203         mutex_unlock(&wl->mutex);
1204 }
1205
1206
1207 /* can't be const, mac80211 writes to this */
1208 static struct ieee80211_rate wl1271_rates[] = {
1209         { .bitrate = 10,
1210           .hw_value = 0x1,
1211           .hw_value_short = 0x1, },
1212         { .bitrate = 20,
1213           .hw_value = 0x2,
1214           .hw_value_short = 0x2,
1215           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1216         { .bitrate = 55,
1217           .hw_value = 0x4,
1218           .hw_value_short = 0x4,
1219           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1220         { .bitrate = 110,
1221           .hw_value = 0x20,
1222           .hw_value_short = 0x20,
1223           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1224         { .bitrate = 60,
1225           .hw_value = 0x8,
1226           .hw_value_short = 0x8, },
1227         { .bitrate = 90,
1228           .hw_value = 0x10,
1229           .hw_value_short = 0x10, },
1230         { .bitrate = 120,
1231           .hw_value = 0x40,
1232           .hw_value_short = 0x40, },
1233         { .bitrate = 180,
1234           .hw_value = 0x80,
1235           .hw_value_short = 0x80, },
1236         { .bitrate = 240,
1237           .hw_value = 0x200,
1238           .hw_value_short = 0x200, },
1239         { .bitrate = 360,
1240          .hw_value = 0x400,
1241          .hw_value_short = 0x400, },
1242         { .bitrate = 480,
1243           .hw_value = 0x800,
1244           .hw_value_short = 0x800, },
1245         { .bitrate = 540,
1246           .hw_value = 0x1000,
1247           .hw_value_short = 0x1000, },
1248 };
1249
1250 /* can't be const, mac80211 writes to this */
1251 static struct ieee80211_channel wl1271_channels[] = {
1252         { .hw_value = 1, .center_freq = 2412},
1253         { .hw_value = 2, .center_freq = 2417},
1254         { .hw_value = 3, .center_freq = 2422},
1255         { .hw_value = 4, .center_freq = 2427},
1256         { .hw_value = 5, .center_freq = 2432},
1257         { .hw_value = 6, .center_freq = 2437},
1258         { .hw_value = 7, .center_freq = 2442},
1259         { .hw_value = 8, .center_freq = 2447},
1260         { .hw_value = 9, .center_freq = 2452},
1261         { .hw_value = 10, .center_freq = 2457},
1262         { .hw_value = 11, .center_freq = 2462},
1263         { .hw_value = 12, .center_freq = 2467},
1264         { .hw_value = 13, .center_freq = 2472},
1265 };
1266
1267 /* can't be const, mac80211 writes to this */
1268 static struct ieee80211_supported_band wl1271_band_2ghz = {
1269         .channels = wl1271_channels,
1270         .n_channels = ARRAY_SIZE(wl1271_channels),
1271         .bitrates = wl1271_rates,
1272         .n_bitrates = ARRAY_SIZE(wl1271_rates),
1273 };
1274
1275 static const struct ieee80211_ops wl1271_ops = {
1276         .start = wl1271_op_start,
1277         .stop = wl1271_op_stop,
1278         .add_interface = wl1271_op_add_interface,
1279         .remove_interface = wl1271_op_remove_interface,
1280         .config = wl1271_op_config,
1281 /*      .config_interface = wl1271_op_config_interface, */
1282         .prepare_multicast = wl1271_op_prepare_multicast,
1283         .configure_filter = wl1271_op_configure_filter,
1284         .tx = wl1271_op_tx,
1285         .set_key = wl1271_op_set_key,
1286         .hw_scan = wl1271_op_hw_scan,
1287         .bss_info_changed = wl1271_op_bss_info_changed,
1288         .set_rts_threshold = wl1271_op_set_rts_threshold,
1289 };
1290
1291 static int wl1271_register_hw(struct wl1271 *wl)
1292 {
1293         int ret;
1294
1295         if (wl->mac80211_registered)
1296                 return 0;
1297
1298         SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1299
1300         ret = ieee80211_register_hw(wl->hw);
1301         if (ret < 0) {
1302                 wl1271_error("unable to register mac80211 hw: %d", ret);
1303                 return ret;
1304         }
1305
1306         wl->mac80211_registered = true;
1307
1308         wl1271_notice("loaded");
1309
1310         return 0;
1311 }
1312
1313 static int wl1271_init_ieee80211(struct wl1271 *wl)
1314 {
1315         /* The tx descriptor buffer and the TKIP space. */
1316         wl->hw->extra_tx_headroom = WL1271_TKIP_IV_SPACE +
1317                 sizeof(struct wl1271_tx_hw_descr);
1318
1319         /* unit us */
1320         /* FIXME: find a proper value */
1321         wl->hw->channel_change_time = 10000;
1322
1323         wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1324                 IEEE80211_HW_NOISE_DBM |
1325                 IEEE80211_HW_BEACON_FILTER;
1326
1327         wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1328         wl->hw->wiphy->max_scan_ssids = 1;
1329         wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1271_band_2ghz;
1330
1331         SET_IEEE80211_DEV(wl->hw, &wl->spi->dev);
1332
1333         return 0;
1334 }
1335
1336 static void wl1271_device_release(struct device *dev)
1337 {
1338
1339 }
1340
1341 static struct platform_device wl1271_device = {
1342         .name           = "wl1271",
1343         .id             = -1,
1344
1345         /* device model insists to have a release function */
1346         .dev            = {
1347                 .release = wl1271_device_release,
1348         },
1349 };
1350
1351 #define WL1271_DEFAULT_CHANNEL 0
1352 static int __devinit wl1271_probe(struct spi_device *spi)
1353 {
1354         struct wl12xx_platform_data *pdata;
1355         struct ieee80211_hw *hw;
1356         struct wl1271 *wl;
1357         int ret, i;
1358         static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1359
1360         pdata = spi->dev.platform_data;
1361         if (!pdata) {
1362                 wl1271_error("no platform data");
1363                 return -ENODEV;
1364         }
1365
1366         hw = ieee80211_alloc_hw(sizeof(*wl), &wl1271_ops);
1367         if (!hw) {
1368                 wl1271_error("could not alloc ieee80211_hw");
1369                 return -ENOMEM;
1370         }
1371
1372         wl = hw->priv;
1373         memset(wl, 0, sizeof(*wl));
1374
1375         wl->hw = hw;
1376         dev_set_drvdata(&spi->dev, wl);
1377         wl->spi = spi;
1378
1379         skb_queue_head_init(&wl->tx_queue);
1380
1381         INIT_WORK(&wl->filter_work, wl1271_filter_work);
1382         INIT_DELAYED_WORK(&wl->elp_work, wl1271_elp_work);
1383         wl->channel = WL1271_DEFAULT_CHANNEL;
1384         wl->scanning = false;
1385         wl->default_key = 0;
1386         wl->listen_int = 1;
1387         wl->rx_counter = 0;
1388         wl->rx_config = WL1271_DEFAULT_RX_CONFIG;
1389         wl->rx_filter = WL1271_DEFAULT_RX_FILTER;
1390         wl->elp = false;
1391         wl->psm = 0;
1392         wl->psm_requested = false;
1393         wl->tx_queue_stopped = false;
1394         wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
1395         wl->beacon_int = WL1271_DEFAULT_BEACON_INT;
1396         wl->dtim_period = WL1271_DEFAULT_DTIM_PERIOD;
1397         wl->basic_rate_set = WL1271_DEFAULT_BASIC_RATE_SET;
1398         wl->band = IEEE80211_BAND_2GHZ;
1399         wl->vif = NULL;
1400         wl->joined = false;
1401
1402         for (i = 0; i < ACX_TX_DESCRIPTORS; i++)
1403                 wl->tx_frames[i] = NULL;
1404
1405         spin_lock_init(&wl->wl_lock);
1406
1407         /*
1408          * In case our MAC address is not correctly set,
1409          * we use a random but Nokia MAC.
1410          */
1411         memcpy(wl->mac_addr, nokia_oui, 3);
1412         get_random_bytes(wl->mac_addr + 3, 3);
1413
1414         wl->state = WL1271_STATE_OFF;
1415         mutex_init(&wl->mutex);
1416
1417         wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1418         if (!wl->rx_descriptor) {
1419                 wl1271_error("could not allocate memory for rx descriptor");
1420                 ret = -ENOMEM;
1421                 goto out_free;
1422         }
1423
1424         /* This is the only SPI value that we need to set here, the rest
1425          * comes from the board-peripherals file */
1426         spi->bits_per_word = 32;
1427
1428         ret = spi_setup(spi);
1429         if (ret < 0) {
1430                 wl1271_error("spi_setup failed");
1431                 goto out_free;
1432         }
1433
1434         wl->set_power = pdata->set_power;
1435         if (!wl->set_power) {
1436                 wl1271_error("set power function missing in platform data");
1437                 ret = -ENODEV;
1438                 goto out_free;
1439         }
1440
1441         wl->irq = spi->irq;
1442         if (wl->irq < 0) {
1443                 wl1271_error("irq missing in platform data");
1444                 ret = -ENODEV;
1445                 goto out_free;
1446         }
1447
1448         ret = request_irq(wl->irq, wl1271_irq, 0, DRIVER_NAME, wl);
1449         if (ret < 0) {
1450                 wl1271_error("request_irq() failed: %d", ret);
1451                 goto out_free;
1452         }
1453
1454         set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING);
1455
1456         disable_irq(wl->irq);
1457
1458         ret = platform_device_register(&wl1271_device);
1459         if (ret) {
1460                 wl1271_error("couldn't register platform device");
1461                 goto out_irq;
1462         }
1463         dev_set_drvdata(&wl1271_device.dev, wl);
1464
1465         ret = wl1271_init_ieee80211(wl);
1466         if (ret)
1467                 goto out_platform;
1468
1469         ret = wl1271_register_hw(wl);
1470         if (ret)
1471                 goto out_platform;
1472
1473         wl1271_debugfs_init(wl);
1474
1475         wl1271_notice("initialized");
1476
1477         return 0;
1478
1479  out_platform:
1480         platform_device_unregister(&wl1271_device);
1481
1482  out_irq:
1483         free_irq(wl->irq, wl);
1484
1485  out_free:
1486         kfree(wl->rx_descriptor);
1487         wl->rx_descriptor = NULL;
1488
1489         ieee80211_free_hw(hw);
1490
1491         return ret;
1492 }
1493
1494 static int __devexit wl1271_remove(struct spi_device *spi)
1495 {
1496         struct wl1271 *wl = dev_get_drvdata(&spi->dev);
1497
1498         ieee80211_unregister_hw(wl->hw);
1499
1500         wl1271_debugfs_exit(wl);
1501         platform_device_unregister(&wl1271_device);
1502         free_irq(wl->irq, wl);
1503         kfree(wl->target_mem_map);
1504         vfree(wl->fw);
1505         wl->fw = NULL;
1506         kfree(wl->nvs);
1507         wl->nvs = NULL;
1508
1509         kfree(wl->rx_descriptor);
1510         wl->rx_descriptor = NULL;
1511
1512         kfree(wl->fw_status);
1513         kfree(wl->tx_res_if);
1514
1515         ieee80211_free_hw(wl->hw);
1516
1517         return 0;
1518 }
1519
1520
1521 static struct spi_driver wl1271_spi_driver = {
1522         .driver = {
1523                 .name           = "wl1271",
1524                 .bus            = &spi_bus_type,
1525                 .owner          = THIS_MODULE,
1526         },
1527
1528         .probe          = wl1271_probe,
1529         .remove         = __devexit_p(wl1271_remove),
1530 };
1531
1532 static int __init wl1271_init(void)
1533 {
1534         int ret;
1535
1536         ret = spi_register_driver(&wl1271_spi_driver);
1537         if (ret < 0) {
1538                 wl1271_error("failed to register spi driver: %d", ret);
1539                 goto out;
1540         }
1541
1542 out:
1543         return ret;
1544 }
1545
1546 static void __exit wl1271_exit(void)
1547 {
1548         spi_unregister_driver(&wl1271_spi_driver);
1549
1550         wl1271_notice("unloaded");
1551 }
1552
1553 module_init(wl1271_init);
1554 module_exit(wl1271_exit);
1555
1556 MODULE_LICENSE("GPL");
1557 MODULE_AUTHOR("Luciano Coelho <luciano.coelho@nokia.com>");
1558 MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");