drivers/net/wireless/wl12xx/wl1271_main.c

   1 /*
   2  * This file is part of wl1271
   3  *
   4  * Copyright (C) 2008-2010 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/firmware.h>
  26 #include <linux/delay.h>
  27 #include <linux/spi/spi.h>
  28 #include <linux/crc32.h>
  29 #include <linux/etherdevice.h>
  30 #include <linux/vmalloc.h>
  31 #include <linux/inetdevice.h>
  32 #include <linux/platform_device.h>
  33 #include <linux/slab.h>
  34
  35 #include "wl1271.h"
  36 #include "wl12xx_80211.h"
  37 #include "wl1271_reg.h"
  38 #include "wl1271_io.h"
  39 #include "wl1271_event.h"
  40 #include "wl1271_tx.h"
  41 #include "wl1271_rx.h"
  42 #include "wl1271_ps.h"
  43 #include "wl1271_init.h"
  44 #include "wl1271_debugfs.h"
  45 #include "wl1271_cmd.h"
  46 #include "wl1271_boot.h"
  47 #include "wl1271_testmode.h"
  48
  49 #define WL1271_BOOT_RETRIES 3
  50
  51 static struct conf_drv_settings default_conf = {
  52         .sg = {
  53                 .params = {
  54                         [CONF_SG_BT_PER_THRESHOLD]                  = 7500,
  55                         [CONF_SG_HV3_MAX_OVERRIDE]                  = 0,
  56                         [CONF_SG_BT_NFS_SAMPLE_INTERVAL]            = 400,
  57                         [CONF_SG_BT_LOAD_RATIO]                     = 50,
  58                         [CONF_SG_AUTO_PS_MODE]                      = 0,
  59                         [CONF_SG_AUTO_SCAN_PROBE_REQ]               = 170,
  60                         [CONF_SG_ACTIVE_SCAN_DURATION_FACTOR_HV3]   = 50,
  61                         [CONF_SG_ANTENNA_CONFIGURATION]             = 0,
  62                         [CONF_SG_BEACON_MISS_PERCENT]               = 60,
  63                         [CONF_SG_RATE_ADAPT_THRESH]                 = 12,
  64                         [CONF_SG_RATE_ADAPT_SNR]                    = 0,
  65                         [CONF_SG_WLAN_PS_BT_ACL_MASTER_MIN_BR]      = 10,
  66                         [CONF_SG_WLAN_PS_BT_ACL_MASTER_MAX_BR]      = 30,
  67                         [CONF_SG_WLAN_PS_MAX_BT_ACL_MASTER_BR]      = 8,
  68                         [CONF_SG_WLAN_PS_BT_ACL_SLAVE_MIN_BR]       = 20,
  69                         [CONF_SG_WLAN_PS_BT_ACL_SLAVE_MAX_BR]       = 50,
  70                         /* Note: with UPSD, this should be 4 */
  71                         [CONF_SG_WLAN_PS_MAX_BT_ACL_SLAVE_BR]       = 8,
  72                         [CONF_SG_WLAN_PS_BT_ACL_MASTER_MIN_EDR]     = 7,
  73                         [CONF_SG_WLAN_PS_BT_ACL_MASTER_MAX_EDR]     = 25,
  74                         [CONF_SG_WLAN_PS_MAX_BT_ACL_MASTER_EDR]     = 20,
  75                         /* Note: with UPDS, this should be 15 */
  76                         [CONF_SG_WLAN_PS_BT_ACL_SLAVE_MIN_EDR]      = 8,
  77                         /* Note: with UPDS, this should be 50 */
  78                         [CONF_SG_WLAN_PS_BT_ACL_SLAVE_MAX_EDR]      = 40,
  79                         /* Note: with UPDS, this should be 10 */
  80                         [CONF_SG_WLAN_PS_MAX_BT_ACL_SLAVE_EDR]      = 20,
  81                         [CONF_SG_RXT]                               = 1200,
  82                         [CONF_SG_TXT]                               = 1000,
  83                         [CONF_SG_ADAPTIVE_RXT_TXT]                  = 1,
  84                         [CONF_SG_PS_POLL_TIMEOUT]                   = 10,
  85                         [CONF_SG_UPSD_TIMEOUT]                      = 10,
  86                         [CONF_SG_WLAN_ACTIVE_BT_ACL_MASTER_MIN_EDR] = 7,
  87                         [CONF_SG_WLAN_ACTIVE_BT_ACL_MASTER_MAX_EDR] = 15,
  88                         [CONF_SG_WLAN_ACTIVE_MAX_BT_ACL_MASTER_EDR] = 15,
  89                         [CONF_SG_WLAN_ACTIVE_BT_ACL_SLAVE_MIN_EDR]  = 8,
  90                         [CONF_SG_WLAN_ACTIVE_BT_ACL_SLAVE_MAX_EDR]  = 20,
  91                         [CONF_SG_WLAN_ACTIVE_MAX_BT_ACL_SLAVE_EDR]  = 15,
  92                         [CONF_SG_WLAN_ACTIVE_BT_ACL_MIN_BR]         = 20,
  93                         [CONF_SG_WLAN_ACTIVE_BT_ACL_MAX_BR]         = 50,
  94                         [CONF_SG_WLAN_ACTIVE_MAX_BT_ACL_BR]         = 10,
  95                         [CONF_SG_PASSIVE_SCAN_DURATION_FACTOR_HV3]  = 200,
  96                         [CONF_SG_PASSIVE_SCAN_DURATION_FACTOR_A2DP] = 800,
  97                         [CONF_SG_PASSIVE_SCAN_A2DP_BT_TIME]         = 75,
  98                         [CONF_SG_PASSIVE_SCAN_A2DP_WLAN_TIME]       = 15,
  99                         [CONF_SG_HV3_MAX_SERVED]                    = 6,
 100                         [CONF_SG_DHCP_TIME]                         = 5000,
 101                         [CONF_SG_ACTIVE_SCAN_DURATION_FACTOR_A2DP]  = 100,
 102                 },
 103                 .state = CONF_SG_PROTECTIVE,
 104         },
 105         .rx = {
 106                 .rx_msdu_life_time           = 512000,
 107                 .packet_detection_threshold  = 0,
 108                 .ps_poll_timeout             = 15,
 109                 .upsd_timeout                = 15,
 110                 .rts_threshold               = 2347,
 111                 .rx_cca_threshold            = 0,
 112                 .irq_blk_threshold           = 0xFFFF,
 113                 .irq_pkt_threshold           = 0,
 114                 .irq_timeout                 = 600,
 115                 .queue_type                  = CONF_RX_QUEUE_TYPE_LOW_PRIORITY,
 116         },
 117         .tx = {
 118                 .tx_energy_detection         = 0,
 119                 .rc_conf                     = {
 120                         .enabled_rates       = 0,
 121                         .short_retry_limit   = 10,
 122                         .long_retry_limit    = 10,
 123                         .aflags              = 0
 124                 },
 125                 .ac_conf_count               = 4,
 126                 .ac_conf                     = {
 127                         [0] = {
 128                                 .ac          = CONF_TX_AC_BE,
 129                                 .cw_min      = 15,
 130                                 .cw_max      = 63,
 131                                 .aifsn       = 3,
 132                                 .tx_op_limit = 0,
 133                         },
 134                         [1] = {
 135                                 .ac          = CONF_TX_AC_BK,
 136                                 .cw_min      = 15,
 137                                 .cw_max      = 63,
 138                                 .aifsn       = 7,
 139                                 .tx_op_limit = 0,
 140                         },
 141                         [2] = {
 142                                 .ac          = CONF_TX_AC_VI,
 143                                 .cw_min      = 15,
 144                                 .cw_max      = 63,
 145                                 .aifsn       = CONF_TX_AIFS_PIFS,
 146                                 .tx_op_limit = 3008,
 147                         },
 148                         [3] = {
 149                                 .ac          = CONF_TX_AC_VO,
 150                                 .cw_min      = 15,
 151                                 .cw_max      = 63,
 152                                 .aifsn       = CONF_TX_AIFS_PIFS,
 153                                 .tx_op_limit = 1504,
 154                         },
 155                 },
 156                 .tid_conf_count = 7,
 157                 .tid_conf = {
 158                         [0] = {
 159                                 .queue_id    = 0,
 160                                 .channel_type = CONF_CHANNEL_TYPE_DCF,
 161                                 .tsid        = CONF_TX_AC_BE,
 162                                 .ps_scheme   = CONF_PS_SCHEME_LEGACY,
 163                                 .ack_policy  = CONF_ACK_POLICY_LEGACY,
 164                                 .apsd_conf   = {0, 0},
 165                         },
 166                         [1] = {
 167                                 .queue_id    = 1,
 168                                 .channel_type = CONF_CHANNEL_TYPE_DCF,
 169                                 .tsid        = CONF_TX_AC_BE,
 170                                 .ps_scheme   = CONF_PS_SCHEME_LEGACY,
 171                                 .ack_policy  = CONF_ACK_POLICY_LEGACY,
 172                                 .apsd_conf   = {0, 0},
 173                         },
 174                         [2] = {
 175                                 .queue_id    = 2,
 176                                 .channel_type = CONF_CHANNEL_TYPE_DCF,
 177                                 .tsid        = CONF_TX_AC_BE,
 178                                 .ps_scheme   = CONF_PS_SCHEME_LEGACY,
 179                                 .ack_policy  = CONF_ACK_POLICY_LEGACY,
 180                                 .apsd_conf   = {0, 0},
 181                         },
 182                         [3] = {
 183                                 .queue_id    = 3,
 184                                 .channel_type = CONF_CHANNEL_TYPE_DCF,
 185                                 .tsid        = CONF_TX_AC_BE,
 186                                 .ps_scheme   = CONF_PS_SCHEME_LEGACY,
 187                                 .ack_policy  = CONF_ACK_POLICY_LEGACY,
 188                                 .apsd_conf   = {0, 0},
 189                         },
 190                         [4] = {
 191                                 .queue_id    = 4,
 192                                 .channel_type = CONF_CHANNEL_TYPE_DCF,
 193                                 .tsid        = CONF_TX_AC_BE,
 194                                 .ps_scheme   = CONF_PS_SCHEME_LEGACY,
 195                                 .ack_policy  = CONF_ACK_POLICY_LEGACY,
 196                                 .apsd_conf   = {0, 0},
 197                         },
 198                         [5] = {
 199                                 .queue_id    = 5,
 200                                 .channel_type = CONF_CHANNEL_TYPE_DCF,
 201                                 .tsid        = CONF_TX_AC_BE,
 202                                 .ps_scheme   = CONF_PS_SCHEME_LEGACY,
 203                                 .ack_policy  = CONF_ACK_POLICY_LEGACY,
 204                                 .apsd_conf   = {0, 0},
 205                         },
 206                         [6] = {
 207                                 .queue_id    = 6,
 208                                 .channel_type = CONF_CHANNEL_TYPE_DCF,
 209                                 .tsid        = CONF_TX_AC_BE,
 210                                 .ps_scheme   = CONF_PS_SCHEME_LEGACY,
 211                                 .ack_policy  = CONF_ACK_POLICY_LEGACY,
 212                                 .apsd_conf   = {0, 0},
 213                         }
 214                 },
 215                 .frag_threshold              = IEEE80211_MAX_FRAG_THRESHOLD,
 216                 .tx_compl_timeout            = 700,
 217                 .tx_compl_threshold          = 4,
 218                 .basic_rate                  = CONF_HW_BIT_RATE_1MBPS,
 219                 .basic_rate_5                = CONF_HW_BIT_RATE_6MBPS,
 220         },
 221         .conn = {
 222                 .wake_up_event               = CONF_WAKE_UP_EVENT_DTIM,
 223                 .listen_interval             = 1,
 224                 .bcn_filt_mode               = CONF_BCN_FILT_MODE_ENABLED,
 225                 .bcn_filt_ie_count           = 1,
 226                 .bcn_filt_ie = {
 227                         [0] = {
 228                                 .ie          = WLAN_EID_CHANNEL_SWITCH,
 229                                 .rule        = CONF_BCN_RULE_PASS_ON_APPEARANCE,
 230                         }
 231                 },
 232                 .synch_fail_thold            = 10,
 233                 .bss_lose_timeout            = 100,
 234                 .beacon_rx_timeout           = 10000,
 235                 .broadcast_timeout           = 20000,
 236                 .rx_broadcast_in_ps          = 1,
 237                 .ps_poll_threshold           = 20,
 238                 .bet_enable                  = CONF_BET_MODE_ENABLE,
 239                 .bet_max_consecutive         = 10,
 240                 .psm_entry_retries           = 3,
 241                 .keep_alive_interval         = 55000,
 242                 .max_listen_interval         = 20,
 243         },
 244         .init = {
 245                 .radioparam = {
 246                         .fem                 = 1,
 247                 }
 248         },
 249         .itrim = {
 250                 .enable = false,
 251                 .timeout = 50000,
 252         },
 253         .pm_config = {
 254                 .host_clk_settling_time = 5000,
 255                 .host_fast_wakeup_support = false
 256         },
 257         .roam_trigger = {
 258                 /* FIXME: due to firmware bug, must use value 1 for now */
 259                 .trigger_pacing               = 1,
 260                 .avg_weight_rssi_beacon       = 20,
 261                 .avg_weight_rssi_data         = 10,
 262                 .avg_weight_snr_beacon        = 20,
 263                 .avg_weight_snr_data          = 10
 264         }
 265 };
 266
 267 static void wl1271_device_release(struct device *dev)
 268 {
 269
 270 }
 271
 272 static struct platform_device wl1271_device = {
 273         .name           = "wl1271",
 274         .id             = -1,
 275
 276         /* device model insists to have a release function */
 277         .dev            = {
 278                 .release = wl1271_device_release,
 279         },
 280 };
 281
 282 static LIST_HEAD(wl_list);
 283
 284 static void wl1271_conf_init(struct wl1271 *wl)
 285 {
 286
 287         /*
 288          * This function applies the default configuration to the driver. This
 289          * function is invoked upon driver load (spi probe.)
 290          *
 291          * The configuration is stored in a run-time structure in order to
 292          * facilitate for run-time adjustment of any of the parameters. Making
 293          * changes to the configuration structure will apply the new values on
 294          * the next interface up (wl1271_op_start.)
 295          */
 296
 297         /* apply driver default configuration */
 298         memcpy(&wl->conf, &default_conf, sizeof(default_conf));
 299 }
 300
 301
 302 static int wl1271_plt_init(struct wl1271 *wl)
 303 {
 304         struct conf_tx_ac_category *conf_ac;
 305         struct conf_tx_tid *conf_tid;
 306         int ret, i;
 307
 308         ret = wl1271_cmd_general_parms(wl);
 309         if (ret < 0)
 310                 return ret;
 311
 312         ret = wl1271_cmd_radio_parms(wl);
 313         if (ret < 0)
 314                 return ret;
 315
 316         ret = wl1271_init_templates_config(wl);
 317         if (ret < 0)
 318                 return ret;
 319
 320         ret = wl1271_acx_init_mem_config(wl);
 321         if (ret < 0)
 322                 return ret;
 323
 324         /* PHY layer config */
 325         ret = wl1271_init_phy_config(wl);
 326         if (ret < 0)
 327                 goto out_free_memmap;
 328
 329         ret = wl1271_acx_dco_itrim_params(wl);
 330         if (ret < 0)
 331                 goto out_free_memmap;
 332
 333         /* Initialize connection monitoring thresholds */
 334         ret = wl1271_acx_conn_monit_params(wl, false);
 335         if (ret < 0)
 336                 goto out_free_memmap;
 337
 338         /* Bluetooth WLAN coexistence */
 339         ret = wl1271_init_pta(wl);
 340         if (ret < 0)
 341                 goto out_free_memmap;
 342
 343         /* Energy detection */
 344         ret = wl1271_init_energy_detection(wl);
 345         if (ret < 0)
 346                 goto out_free_memmap;
 347
 348         /* Default fragmentation threshold */
 349         ret = wl1271_acx_frag_threshold(wl);
 350         if (ret < 0)
 351                 goto out_free_memmap;
 352
 353         /* Default TID configuration */
 354         for (i = 0; i < wl->conf.tx.tid_conf_count; i++) {
 355                 conf_tid = &wl->conf.tx.tid_conf[i];
 356                 ret = wl1271_acx_tid_cfg(wl, conf_tid->queue_id,
 357                                          conf_tid->channel_type,
 358                                          conf_tid->tsid,
 359                                          conf_tid->ps_scheme,
 360                                          conf_tid->ack_policy,
 361                                          conf_tid->apsd_conf[0],
 362                                          conf_tid->apsd_conf[1]);
 363                 if (ret < 0)
 364                         goto out_free_memmap;
 365         }
 366
 367         /* Default AC configuration */
 368         for (i = 0; i < wl->conf.tx.ac_conf_count; i++) {
 369                 conf_ac = &wl->conf.tx.ac_conf[i];
 370                 ret = wl1271_acx_ac_cfg(wl, conf_ac->ac, conf_ac->cw_min,
 371                                         conf_ac->cw_max, conf_ac->aifsn,
 372                                         conf_ac->tx_op_limit);
 373                 if (ret < 0)
 374                         goto out_free_memmap;
 375         }
 376
 377         /* Enable data path */
 378         ret = wl1271_cmd_data_path(wl, 1);
 379         if (ret < 0)
 380                 goto out_free_memmap;
 381
 382         /* Configure for CAM power saving (ie. always active) */
 383         ret = wl1271_acx_sleep_auth(wl, WL1271_PSM_CAM);
 384         if (ret < 0)
 385                 goto out_free_memmap;
 386
 387         /* configure PM */
 388         ret = wl1271_acx_pm_config(wl);
 389         if (ret < 0)
 390                 goto out_free_memmap;
 391
 392         return 0;
 393
 394  out_free_memmap:
 395         kfree(wl->target_mem_map);
 396         wl->target_mem_map = NULL;
 397
 398         return ret;
 399 }
 400
 401 static void wl1271_fw_status(struct wl1271 *wl,
 402                              struct wl1271_fw_status *status)
 403 {
 404         struct timespec ts;
 405         u32 total = 0;
 406         int i;
 407
 408         wl1271_raw_read(wl, FW_STATUS_ADDR, status, sizeof(*status), false);
 409
 410         wl1271_debug(DEBUG_IRQ, "intr: 0x%x (fw_rx_counter = %d, "
 411                      "drv_rx_counter = %d, tx_results_counter = %d)",
 412                      status->intr,
 413                      status->fw_rx_counter,
 414                      status->drv_rx_counter,
 415                      status->tx_results_counter);
 416
 417         /* update number of available TX blocks */
 418         for (i = 0; i < NUM_TX_QUEUES; i++) {
 419                 u32 cnt = le32_to_cpu(status->tx_released_blks[i]) -
 420                         wl->tx_blocks_freed[i];
 421
 422                 wl->tx_blocks_freed[i] =
 423                         le32_to_cpu(status->tx_released_blks[i]);
 424                 wl->tx_blocks_available += cnt;
 425                 total += cnt;
 426         }
 427
 428         /* if more blocks are available now, schedule some tx work */
 429         if (total && !skb_queue_empty(&wl->tx_queue))
 430                 ieee80211_queue_work(wl->hw, &wl->tx_work);
 431
 432         /* update the host-chipset time offset */
 433         getnstimeofday(&ts);
 434         wl->time_offset = (timespec_to_ns(&ts) >> 10) -
 435                 (s64)le32_to_cpu(status->fw_localtime);
 436 }
 437
 438 #define WL1271_IRQ_MAX_LOOPS 10
 439
 440 static void wl1271_irq_work(struct work_struct *work)
 441 {
 442         int ret;
 443         u32 intr;
 444         int loopcount = WL1271_IRQ_MAX_LOOPS;
 445         unsigned long flags;
 446         struct wl1271 *wl =
 447                 container_of(work, struct wl1271, irq_work);
 448
 449         mutex_lock(&wl->mutex);
 450
 451         wl1271_debug(DEBUG_IRQ, "IRQ work");
 452
 453         if (unlikely(wl->state == WL1271_STATE_OFF))
 454                 goto out;
 455
 456         ret = wl1271_ps_elp_wakeup(wl, true);
 457         if (ret < 0)
 458                 goto out;
 459
 460         spin_lock_irqsave(&wl->wl_lock, flags);
 461         while (test_bit(WL1271_FLAG_IRQ_PENDING, &wl->flags) && loopcount) {
 462                 clear_bit(WL1271_FLAG_IRQ_PENDING, &wl->flags);
 463                 spin_unlock_irqrestore(&wl->wl_lock, flags);
 464                 loopcount--;
 465
 466                 wl1271_fw_status(wl, wl->fw_status);
 467                 intr = le32_to_cpu(wl->fw_status->intr);
 468                 if (!intr) {
 469                         wl1271_debug(DEBUG_IRQ, "Zero interrupt received.");
 470                         continue;
 471                 }
 472
 473                 intr &= WL1271_INTR_MASK;
 474
 475                 if (intr & WL1271_ACX_INTR_DATA) {
 476                         wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_DATA");
 477
 478                         /* check for tx results */
 479                         if (wl->fw_status->tx_results_counter !=
 480                             (wl->tx_results_count & 0xff))
 481                                 wl1271_tx_complete(wl);
 482
 483                         wl1271_rx(wl, wl->fw_status);
 484                 }
 485
 486                 if (intr & WL1271_ACX_INTR_EVENT_A) {
 487                         wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_EVENT_A");
 488                         wl1271_event_handle(wl, 0);
 489                 }
 490
 491                 if (intr & WL1271_ACX_INTR_EVENT_B) {
 492                         wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_EVENT_B");
 493                         wl1271_event_handle(wl, 1);
 494                 }
 495
 496                 if (intr & WL1271_ACX_INTR_INIT_COMPLETE)
 497                         wl1271_debug(DEBUG_IRQ,
 498                                      "WL1271_ACX_INTR_INIT_COMPLETE");
 499
 500                 if (intr & WL1271_ACX_INTR_HW_AVAILABLE)
 501                         wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_HW_AVAILABLE");
 502
 503                 spin_lock_irqsave(&wl->wl_lock, flags);
 504         }
 505
 506         if (test_bit(WL1271_FLAG_IRQ_PENDING, &wl->flags))
 507                 ieee80211_queue_work(wl->hw, &wl->irq_work);
 508         else
 509                 clear_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags);
 510         spin_unlock_irqrestore(&wl->wl_lock, flags);
 511
 512         wl1271_ps_elp_sleep(wl);
 513
 514 out:
 515         mutex_unlock(&wl->mutex);
 516 }
 517
 518 static int wl1271_fetch_firmware(struct wl1271 *wl)
 519 {
 520         const struct firmware *fw;
 521         int ret;
 522
 523         ret = request_firmware(&fw, WL1271_FW_NAME, wl1271_wl_to_dev(wl));
 524
 525         if (ret < 0) {
 526                 wl1271_error("could not get firmware: %d", ret);
 527                 return ret;
 528         }
 529
 530         if (fw->size % 4) {
 531                 wl1271_error("firmware size is not multiple of 32 bits: %zu",
 532                              fw->size);
 533                 ret = -EILSEQ;
 534                 goto out;
 535         }
 536
 537         wl->fw_len = fw->size;
 538         wl->fw = vmalloc(wl->fw_len);
 539
 540         if (!wl->fw) {
 541                 wl1271_error("could not allocate memory for the firmware");
 542                 ret = -ENOMEM;
 543                 goto out;
 544         }
 545
 546         memcpy(wl->fw, fw->data, wl->fw_len);
 547
 548         ret = 0;
 549
 550 out:
 551         release_firmware(fw);
 552
 553         return ret;
 554 }
 555
 556 static int wl1271_fetch_nvs(struct wl1271 *wl)
 557 {
 558         const struct firmware *fw;
 559         int ret;
 560
 561         ret = request_firmware(&fw, WL1271_NVS_NAME, wl1271_wl_to_dev(wl));
 562
 563         if (ret < 0) {
 564                 wl1271_error("could not get nvs file: %d", ret);
 565                 return ret;
 566         }
 567
 568         if (fw->size != sizeof(struct wl1271_nvs_file)) {
 569                 wl1271_error("nvs size is not as expected: %zu != %zu",
 570                              fw->size, sizeof(struct wl1271_nvs_file));
 571                 ret = -EILSEQ;
 572                 goto out;
 573         }
 574
 575         wl->nvs = kmalloc(sizeof(struct wl1271_nvs_file), GFP_KERNEL);
 576
 577         if (!wl->nvs) {
 578                 wl1271_error("could not allocate memory for the nvs file");
 579                 ret = -ENOMEM;
 580                 goto out;
 581         }
 582
 583         memcpy(wl->nvs, fw->data, sizeof(struct wl1271_nvs_file));
 584
 585 out:
 586         release_firmware(fw);
 587
 588         return ret;
 589 }
 590
 591 static void wl1271_fw_wakeup(struct wl1271 *wl)
 592 {
 593         u32 elp_reg;
 594
 595         elp_reg = ELPCTRL_WAKE_UP;
 596         wl1271_raw_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
 597 }
 598
 599 static int wl1271_setup(struct wl1271 *wl)
 600 {
 601         wl->fw_status = kmalloc(sizeof(*wl->fw_status), GFP_KERNEL);
 602         if (!wl->fw_status)
 603                 return -ENOMEM;
 604
 605         wl->tx_res_if = kmalloc(sizeof(*wl->tx_res_if), GFP_KERNEL);
 606         if (!wl->tx_res_if) {
 607                 kfree(wl->fw_status);
 608                 return -ENOMEM;
 609         }
 610
 611         INIT_WORK(&wl->irq_work, wl1271_irq_work);
 612         INIT_WORK(&wl->tx_work, wl1271_tx_work);
 613         return 0;
 614 }
 615
 616 static int wl1271_chip_wakeup(struct wl1271 *wl)
 617 {
 618         struct wl1271_partition_set partition;
 619         int ret = 0;
 620
 621         msleep(WL1271_PRE_POWER_ON_SLEEP);
 622         wl1271_power_on(wl);
 623         msleep(WL1271_POWER_ON_SLEEP);
 624         wl1271_io_reset(wl);
 625         wl1271_io_init(wl);
 626
 627         /* We don't need a real memory partition here, because we only want
 628          * to use the registers at this point. */
 629         memset(&partition, 0, sizeof(partition));
 630         partition.reg.start = REGISTERS_BASE;
 631         partition.reg.size = REGISTERS_DOWN_SIZE;
 632         wl1271_set_partition(wl, &partition);
 633
 634         /* ELP module wake up */
 635         wl1271_fw_wakeup(wl);
 636
 637         /* whal_FwCtrl_BootSm() */
 638
 639         /* 0. read chip id from CHIP_ID */
 640         wl->chip.id = wl1271_read32(wl, CHIP_ID_B);
 641
 642         /* 1. check if chip id is valid */
 643
 644         switch (wl->chip.id) {
 645         case CHIP_ID_1271_PG10:
 646                 wl1271_warning("chip id 0x%x (1271 PG10) support is obsolete",
 647                                wl->chip.id);
 648
 649                 ret = wl1271_setup(wl);
 650                 if (ret < 0)
 651                         goto out;
 652                 break;
 653         case CHIP_ID_1271_PG20:
 654                 wl1271_debug(DEBUG_BOOT, "chip id 0x%x (1271 PG20)",
 655                              wl->chip.id);
 656
 657                 ret = wl1271_setup(wl);
 658                 if (ret < 0)
 659                         goto out;
 660                 break;
 661         default:
 662                 wl1271_warning("unsupported chip id: 0x%x", wl->chip.id);
 663                 ret = -ENODEV;
 664                 goto out;
 665         }
 666
 667         if (wl->fw == NULL) {
 668                 ret = wl1271_fetch_firmware(wl);
 669                 if (ret < 0)
 670                         goto out;
 671         }
 672
 673         /* No NVS from netlink, try to get it from the filesystem */
 674         if (wl->nvs == NULL) {
 675                 ret = wl1271_fetch_nvs(wl);
 676                 if (ret < 0)
 677                         goto out;
 678         }
 679
 680 out:
 681         return ret;
 682 }
 683
 684 int wl1271_plt_start(struct wl1271 *wl)
 685 {
 686         int retries = WL1271_BOOT_RETRIES;
 687         int ret;
 688
 689         mutex_lock(&wl->mutex);
 690
 691         wl1271_notice("power up");
 692
 693         if (wl->state != WL1271_STATE_OFF) {
 694                 wl1271_error("cannot go into PLT state because not "
 695                              "in off state: %d", wl->state);
 696                 ret = -EBUSY;
 697                 goto out;
 698         }
 699
 700         while (retries) {
 701                 retries--;
 702                 ret = wl1271_chip_wakeup(wl);
 703                 if (ret < 0)
 704                         goto power_off;
 705
 706                 ret = wl1271_boot(wl);
 707                 if (ret < 0)
 708                         goto power_off;
 709
 710                 ret = wl1271_plt_init(wl);
 711                 if (ret < 0)
 712                         goto irq_disable;
 713
 714                 wl->state = WL1271_STATE_PLT;
 715                 wl1271_notice("firmware booted in PLT mode (%s)",
 716                               wl->chip.fw_ver);
 717                 goto out;
 718
 719 irq_disable:
 720                 wl1271_disable_interrupts(wl);
 721                 mutex_unlock(&wl->mutex);
 722                 /* Unlocking the mutex in the middle of handling is
 723                    inherently unsafe. In this case we deem it safe to do,
 724                    because we need to let any possibly pending IRQ out of
 725                    the system (and while we are WL1271_STATE_OFF the IRQ
 726                    work function will not do anything.) Also, any other
 727                    possible concurrent operations will fail due to the
 728                    current state, hence the wl1271 struct should be safe. */
 729                 cancel_work_sync(&wl->irq_work);
 730                 mutex_lock(&wl->mutex);
 731 power_off:
 732                 wl1271_power_off(wl);
 733         }
 734
 735         wl1271_error("firmware boot in PLT mode failed despite %d retries",
 736                      WL1271_BOOT_RETRIES);
 737 out:
 738         mutex_unlock(&wl->mutex);
 739
 740         return ret;
 741 }
 742
 743 int wl1271_plt_stop(struct wl1271 *wl)
 744 {
 745         int ret = 0;
 746
 747         mutex_lock(&wl->mutex);
 748
 749         wl1271_notice("power down");
 750
 751         if (wl->state != WL1271_STATE_PLT) {
 752                 wl1271_error("cannot power down because not in PLT "
 753                              "state: %d", wl->state);
 754                 ret = -EBUSY;
 755                 goto out;
 756         }
 757
 758         wl1271_disable_interrupts(wl);
 759         wl1271_power_off(wl);
 760
 761         wl->state = WL1271_STATE_OFF;
 762         wl->rx_counter = 0;
 763
 764 out:
 765         mutex_unlock(&wl->mutex);
 766
 767         return ret;
 768 }
 769
 770
 771 static int wl1271_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 772 {
 773         struct wl1271 *wl = hw->priv;
 774         struct ieee80211_conf *conf = &hw->conf;
 775         struct ieee80211_tx_info *txinfo = IEEE80211_SKB_CB(skb);
 776         struct ieee80211_sta *sta = txinfo->control.sta;
 777         unsigned long flags;
 778
 779         /* peek into the rates configured in the STA entry */
 780         spin_lock_irqsave(&wl->wl_lock, flags);
 781         if (sta && sta->supp_rates[conf->channel->band] != wl->sta_rate_set) {
 782                 wl->sta_rate_set = sta->supp_rates[conf->channel->band];
 783                 set_bit(WL1271_FLAG_STA_RATES_CHANGED, &wl->flags);
 784         }
 785         spin_unlock_irqrestore(&wl->wl_lock, flags);
 786
 787         /* queue the packet */
 788         skb_queue_tail(&wl->tx_queue, skb);
 789
 790         /*
 791          * The chip specific setup must run before the first TX packet -
 792          * before that, the tx_work will not be initialized!
 793          */
 794
 795         ieee80211_queue_work(wl->hw, &wl->tx_work);
 796
 797         /*
 798          * The workqueue is slow to process the tx_queue and we need stop
 799          * the queue here, otherwise the queue will get too long.
 800          */
 801         if (skb_queue_len(&wl->tx_queue) >= WL1271_TX_QUEUE_HIGH_WATERMARK) {
 802                 wl1271_debug(DEBUG_TX, "op_tx: stopping queues");
 803
 804                 spin_lock_irqsave(&wl->wl_lock, flags);
 805                 ieee80211_stop_queues(wl->hw);
 806                 set_bit(WL1271_FLAG_TX_QUEUE_STOPPED, &wl->flags);
 807                 spin_unlock_irqrestore(&wl->wl_lock, flags);
 808         }
 809
 810         return NETDEV_TX_OK;
 811 }
 812
 813 static int wl1271_dev_notify(struct notifier_block *me, unsigned long what,
 814                              void *arg)
 815 {
 816         struct net_device *dev;
 817         struct wireless_dev *wdev;
 818         struct wiphy *wiphy;
 819         struct ieee80211_hw *hw;
 820         struct wl1271 *wl;
 821         struct wl1271 *wl_temp;
 822         struct in_device *idev;
 823         struct in_ifaddr *ifa = arg;
 824         int ret = 0;
 825
 826         /* FIXME: this ugly function should probably be implemented in the
 827          * mac80211, and here should only be a simple callback handling actual
 828          * setting of the filters. Now we need to dig up references to
 829          * various structures to gain access to what we need.
 830          * Also, because of this, there is no "initial" setting of the filter
 831          * in "op_start", because we don't want to dig up struct net_device
 832          * there - the filter will be set upon first change of the interface
 833          * IP address. */
 834
 835         dev = ifa->ifa_dev->dev;
 836
 837         wdev = dev->ieee80211_ptr;
 838         if (wdev == NULL)
 839                 return NOTIFY_DONE;
 840
 841         wiphy = wdev->wiphy;
 842         if (wiphy == NULL)
 843                 return NOTIFY_DONE;
 844
 845         hw = wiphy_priv(wiphy);
 846         if (hw == NULL)
 847                 return NOTIFY_DONE;
 848
 849         /* Check that the interface is one supported by this driver. */
 850         wl_temp = hw->priv;
 851         list_for_each_entry(wl, &wl_list, list) {
 852                 if (wl == wl_temp)
 853                         break;
 854         }
 855         if (wl == NULL)
 856                 return NOTIFY_DONE;
 857
 858         /* Get the interface IP address for the device. "ifa" will become
 859            NULL if:
 860              - there is no IPV4 protocol address configured
 861              - there are multiple (virtual) IPV4 addresses configured
 862            When "ifa" is NULL, filtering will be disabled.
 863         */
 864         ifa = NULL;
 865         idev = dev->ip_ptr;
 866         if (idev)
 867                 ifa = idev->ifa_list;
 868
 869         if (ifa && ifa->ifa_next)
 870                 ifa = NULL;
 871
 872         mutex_lock(&wl->mutex);
 873
 874         if (wl->state == WL1271_STATE_OFF)
 875                 goto out;
 876
 877         ret = wl1271_ps_elp_wakeup(wl, false);
 878         if (ret < 0)
 879                 goto out;
 880         if (ifa)
 881                 ret = wl1271_acx_arp_ip_filter(wl, true,
 882                                                (u8 *)&ifa->ifa_address,
 883                                                ACX_IPV4_VERSION);
 884         else
 885                 ret = wl1271_acx_arp_ip_filter(wl, false, NULL,
 886                                                ACX_IPV4_VERSION);
 887         wl1271_ps_elp_sleep(wl);
 888
 889 out:
 890         mutex_unlock(&wl->mutex);
 891
 892         return NOTIFY_OK;
 893 }
 894
 895 static struct notifier_block wl1271_dev_notifier = {
 896         .notifier_call = wl1271_dev_notify,
 897 };
 898
 899
 900 static int wl1271_op_start(struct ieee80211_hw *hw)
 901 {
 902         wl1271_debug(DEBUG_MAC80211, "mac80211 start");
 903
 904         /*
 905          * We have to delay the booting of the hardware because
 906          * we need to know the local MAC address before downloading and
 907          * initializing the firmware. The MAC address cannot be changed
 908          * after boot, and without the proper MAC address, the firmware
 909          * will not function properly.
 910          *
 911          * The MAC address is first known when the corresponding interface
 912          * is added. That is where we will initialize the hardware.
 913          */
 914
 915         return 0;
 916 }
 917
 918 static void wl1271_op_stop(struct ieee80211_hw *hw)
 919 {
 920         wl1271_debug(DEBUG_MAC80211, "mac80211 stop");
 921 }
 922
 923 static int wl1271_op_add_interface(struct ieee80211_hw *hw,
 924                                    struct ieee80211_vif *vif)
 925 {
 926         struct wl1271 *wl = hw->priv;
 927         int retries = WL1271_BOOT_RETRIES;
 928         int ret = 0;
 929
 930         wl1271_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
 931                      vif->type, vif->addr);
 932
 933         mutex_lock(&wl->mutex);
 934         if (wl->vif) {
 935                 ret = -EBUSY;
 936                 goto out;
 937         }
 938
 939         wl->vif = vif;
 940
 941         switch (vif->type) {
 942         case NL80211_IFTYPE_STATION:
 943                 wl->bss_type = BSS_TYPE_STA_BSS;
 944                 wl->set_bss_type = BSS_TYPE_STA_BSS;
 945                 break;
 946         case NL80211_IFTYPE_ADHOC:
 947                 wl->bss_type = BSS_TYPE_IBSS;
 948                 wl->set_bss_type = BSS_TYPE_STA_BSS;
 949                 break;
 950         default:
 951                 ret = -EOPNOTSUPP;
 952                 goto out;
 953         }
 954
 955         memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
 956
 957         if (wl->state != WL1271_STATE_OFF) {
 958                 wl1271_error("cannot start because not in off state: %d",
 959                              wl->state);
 960                 ret = -EBUSY;
 961                 goto out;
 962         }
 963
 964         while (retries) {
 965                 retries--;
 966                 ret = wl1271_chip_wakeup(wl);
 967                 if (ret < 0)
 968                         goto power_off;
 969
 970                 ret = wl1271_boot(wl);
 971                 if (ret < 0)
 972                         goto power_off;
 973
 974                 ret = wl1271_hw_init(wl);
 975                 if (ret < 0)
 976                         goto irq_disable;
 977
 978                 wl->state = WL1271_STATE_ON;
 979                 wl1271_info("firmware booted (%s)", wl->chip.fw_ver);
 980                 goto out;
 981
 982 irq_disable:
 983                 wl1271_disable_interrupts(wl);
 984                 mutex_unlock(&wl->mutex);
 985                 /* Unlocking the mutex in the middle of handling is
 986                    inherently unsafe. In this case we deem it safe to do,
 987                    because we need to let any possibly pending IRQ out of
 988                    the system (and while we are WL1271_STATE_OFF the IRQ
 989                    work function will not do anything.) Also, any other
 990                    possible concurrent operations will fail due to the
 991                    current state, hence the wl1271 struct should be safe. */
 992                 cancel_work_sync(&wl->irq_work);
 993                 mutex_lock(&wl->mutex);
 994 power_off:
 995                 wl1271_power_off(wl);
 996         }
 997
 998         wl1271_error("firmware boot failed despite %d retries",
 999                      WL1271_BOOT_RETRIES);
1000 out:
1001         mutex_unlock(&wl->mutex);
1002
1003         if (!ret) {
1004                 list_add(&wl->list, &wl_list);
1005                 register_inetaddr_notifier(&wl1271_dev_notifier);
1006         }
1007
1008         return ret;
1009 }
1010
1011 static void wl1271_op_remove_interface(struct ieee80211_hw *hw,
1012                                        struct ieee80211_vif *vif)
1013 {
1014         struct wl1271 *wl = hw->priv;
1015         int i;
1016
1017         unregister_inetaddr_notifier(&wl1271_dev_notifier);
1018
1019         mutex_lock(&wl->mutex);
1020         wl1271_debug(DEBUG_MAC80211, "mac80211 remove interface");
1021
1022         wl1271_info("down");
1023
1024         list_del(&wl->list);
1025
1026         WARN_ON(wl->state != WL1271_STATE_ON);
1027
1028         if (test_and_clear_bit(WL1271_FLAG_SCANNING, &wl->flags)) {
1029                 mutex_unlock(&wl->mutex);
1030                 ieee80211_scan_completed(wl->hw, true);
1031                 mutex_lock(&wl->mutex);
1032         }
1033
1034         wl->state = WL1271_STATE_OFF;
1035
1036         wl1271_disable_interrupts(wl);
1037
1038         mutex_unlock(&wl->mutex);
1039
1040         cancel_work_sync(&wl->irq_work);
1041         cancel_work_sync(&wl->tx_work);
1042
1043         mutex_lock(&wl->mutex);
1044
1045         /* let's notify MAC80211 about the remaining pending TX frames */
1046         wl1271_tx_flush(wl);
1047         wl1271_power_off(wl);
1048
1049         memset(wl->bssid, 0, ETH_ALEN);
1050         memset(wl->ssid, 0, IW_ESSID_MAX_SIZE + 1);
1051         wl->ssid_len = 0;
1052         wl->bss_type = MAX_BSS_TYPE;
1053         wl->set_bss_type = MAX_BSS_TYPE;
1054         wl->band = IEEE80211_BAND_2GHZ;
1055
1056         wl->rx_counter = 0;
1057         wl->psm_entry_retry = 0;
1058         wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
1059         wl->tx_blocks_available = 0;
1060         wl->tx_results_count = 0;
1061         wl->tx_packets_count = 0;
1062         wl->tx_security_last_seq = 0;
1063         wl->tx_security_seq = 0;
1064         wl->time_offset = 0;
1065         wl->session_counter = 0;
1066         wl->rate_set = CONF_TX_RATE_MASK_BASIC;
1067         wl->sta_rate_set = 0;
1068         wl->flags = 0;
1069         wl->vif = NULL;
1070         wl->filters = 0;
1071
1072         for (i = 0; i < NUM_TX_QUEUES; i++)
1073                 wl->tx_blocks_freed[i] = 0;
1074
1075         wl1271_debugfs_reset(wl);
1076
1077         kfree(wl->fw_status);
1078         wl->fw_status = NULL;
1079         kfree(wl->tx_res_if);
1080         wl->tx_res_if = NULL;
1081         kfree(wl->target_mem_map);
1082         wl->target_mem_map = NULL;
1083
1084         mutex_unlock(&wl->mutex);
1085 }
1086
1087 static void wl1271_configure_filters(struct wl1271 *wl, unsigned int filters)
1088 {
1089         wl->rx_config = WL1271_DEFAULT_RX_CONFIG;
1090         wl->rx_filter = WL1271_DEFAULT_RX_FILTER;
1091
1092         /* combine requested filters with current filter config */
1093         filters = wl->filters | filters;
1094
1095         wl1271_debug(DEBUG_FILTERS, "RX filters set: ");
1096
1097         if (filters & FIF_PROMISC_IN_BSS) {
1098                 wl1271_debug(DEBUG_FILTERS, " - FIF_PROMISC_IN_BSS");
1099                 wl->rx_config &= ~CFG_UNI_FILTER_EN;
1100                 wl->rx_config |= CFG_BSSID_FILTER_EN;
1101         }
1102         if (filters & FIF_BCN_PRBRESP_PROMISC) {
1103                 wl1271_debug(DEBUG_FILTERS, " - FIF_BCN_PRBRESP_PROMISC");
1104                 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
1105                 wl->rx_config &= ~CFG_SSID_FILTER_EN;
1106         }
1107         if (filters & FIF_OTHER_BSS) {
1108                 wl1271_debug(DEBUG_FILTERS, " - FIF_OTHER_BSS");
1109                 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
1110         }
1111         if (filters & FIF_CONTROL) {
1112                 wl1271_debug(DEBUG_FILTERS, " - FIF_CONTROL");
1113                 wl->rx_filter |= CFG_RX_CTL_EN;
1114         }
1115         if (filters & FIF_FCSFAIL) {
1116                 wl1271_debug(DEBUG_FILTERS, " - FIF_FCSFAIL");
1117                 wl->rx_filter |= CFG_RX_FCS_ERROR;
1118         }
1119 }
1120
1121 static int wl1271_dummy_join(struct wl1271 *wl)
1122 {
1123         int ret = 0;
1124         /* we need to use a dummy BSSID for now */
1125         static const u8 dummy_bssid[ETH_ALEN] = { 0x0b, 0xad, 0xde,
1126                                                   0xad, 0xbe, 0xef };
1127
1128         memcpy(wl->bssid, dummy_bssid, ETH_ALEN);
1129
1130         /* pass through frames from all BSS */
1131         wl1271_configure_filters(wl, FIF_OTHER_BSS);
1132
1133         ret = wl1271_cmd_join(wl, wl->set_bss_type);
1134         if (ret < 0)
1135                 goto out;
1136
1137         set_bit(WL1271_FLAG_JOINED, &wl->flags);
1138
1139 out:
1140         return ret;
1141 }
1142
1143 static int wl1271_join(struct wl1271 *wl)
1144 {
1145         int ret;
1146
1147         ret = wl1271_cmd_join(wl, wl->set_bss_type);
1148         if (ret < 0)
1149                 goto out;
1150
1151         set_bit(WL1271_FLAG_JOINED, &wl->flags);
1152
1153         if (!test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
1154                 goto out;
1155
1156         /*
1157          * The join command disable the keep-alive mode, shut down its process,
1158          * and also clear the template config, so we need to reset it all after
1159          * the join. The acx_aid starts the keep-alive process, and the order
1160          * of the commands below is relevant.
1161          */
1162         ret = wl1271_acx_keep_alive_mode(wl, true);
1163         if (ret < 0)
1164                 goto out;
1165
1166         ret = wl1271_acx_aid(wl, wl->aid);
1167         if (ret < 0)
1168                 goto out;
1169
1170         ret = wl1271_cmd_build_klv_null_data(wl);
1171         if (ret < 0)
1172                 goto out;
1173
1174         ret = wl1271_acx_keep_alive_config(wl, CMD_TEMPL_KLV_IDX_NULL_DATA,
1175                                            ACX_KEEP_ALIVE_TPL_VALID);
1176         if (ret < 0)
1177                 goto out;
1178
1179 out:
1180         return ret;
1181 }
1182
1183 static int wl1271_unjoin(struct wl1271 *wl)
1184 {
1185         int ret;
1186
1187         /* to stop listening to a channel, we disconnect */
1188         ret = wl1271_cmd_disconnect(wl);
1189         if (ret < 0)
1190                 goto out;
1191
1192         clear_bit(WL1271_FLAG_JOINED, &wl->flags);
1193         wl->channel = 0;
1194         memset(wl->bssid, 0, ETH_ALEN);
1195
1196         /* stop filterting packets based on bssid */
1197         wl1271_configure_filters(wl, FIF_OTHER_BSS);
1198
1199 out:
1200         return ret;
1201 }
1202
1203 static void wl1271_set_band_rate(struct wl1271 *wl)
1204 {
1205         if (wl->band == IEEE80211_BAND_2GHZ)
1206                 wl->basic_rate_set = wl->conf.tx.basic_rate;
1207         else
1208                 wl->basic_rate_set = wl->conf.tx.basic_rate_5;
1209 }
1210
1211 static u32 wl1271_min_rate_get(struct wl1271 *wl)
1212 {
1213         int i;
1214         u32 rate = 0;
1215
1216         if (!wl->basic_rate_set) {
1217                 WARN_ON(1);
1218                 wl->basic_rate_set = wl->conf.tx.basic_rate;
1219         }
1220
1221         for (i = 0; !rate; i++) {
1222                 if ((wl->basic_rate_set >> i) & 0x1)
1223                         rate = 1 << i;
1224         }
1225
1226         return rate;
1227 }
1228
1229 static int wl1271_op_config(struct ieee80211_hw *hw, u32 changed)
1230 {
1231         struct wl1271 *wl = hw->priv;
1232         struct ieee80211_conf *conf = &hw->conf;
1233         int channel, ret = 0;
1234
1235         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
1236
1237         wl1271_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d %s",
1238                      channel,
1239                      conf->flags & IEEE80211_CONF_PS ? "on" : "off",
1240                      conf->power_level,
1241                      conf->flags & IEEE80211_CONF_IDLE ? "idle" : "in use");
1242
1243         mutex_lock(&wl->mutex);
1244
1245         if (unlikely(wl->state == WL1271_STATE_OFF))
1246                 goto out;
1247
1248         ret = wl1271_ps_elp_wakeup(wl, false);
1249         if (ret < 0)
1250                 goto out;
1251
1252         /* if the channel changes while joined, join again */
1253         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
1254                 wl->band = conf->channel->band;
1255                 wl->channel = channel;
1256
1257                 /*
1258                  * FIXME: the mac80211 should really provide a fixed rate
1259                  * to use here. for now, just use the smallest possible rate
1260                  * for the band as a fixed rate for association frames and
1261                  * other control messages.
1262                  */
1263                 if (!test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
1264                         wl1271_set_band_rate(wl);
1265
1266                 wl->basic_rate = wl1271_min_rate_get(wl);
1267                 ret = wl1271_acx_rate_policies(wl);
1268                 if (ret < 0)
1269                         wl1271_warning("rate policy for update channel "
1270                                        "failed %d", ret);
1271
1272                 if (test_bit(WL1271_FLAG_JOINED, &wl->flags)) {
1273                         ret = wl1271_join(wl);
1274                         if (ret < 0)
1275                                 wl1271_warning("cmd join to update channel "
1276                                                "failed %d", ret);
1277                 }
1278         }
1279
1280         if (changed & IEEE80211_CONF_CHANGE_IDLE) {
1281                 if (conf->flags & IEEE80211_CONF_IDLE &&
1282                     test_bit(WL1271_FLAG_JOINED, &wl->flags))
1283                         wl1271_unjoin(wl);
1284                 else if (!(conf->flags & IEEE80211_CONF_IDLE))
1285                         wl1271_dummy_join(wl);
1286
1287                 if (conf->flags & IEEE80211_CONF_IDLE) {
1288                         wl->rate_set = wl1271_min_rate_get(wl);
1289                         wl->sta_rate_set = 0;
1290                         wl1271_acx_rate_policies(wl);
1291                         wl1271_acx_keep_alive_config(
1292                                 wl, CMD_TEMPL_KLV_IDX_NULL_DATA,
1293                                 ACX_KEEP_ALIVE_TPL_INVALID);
1294                         set_bit(WL1271_FLAG_IDLE, &wl->flags);
1295                 } else
1296                         clear_bit(WL1271_FLAG_IDLE, &wl->flags);
1297         }
1298
1299         if (conf->flags & IEEE80211_CONF_PS &&
1300             !test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags)) {
1301                 set_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags);
1302
1303                 /*
1304                  * We enter PSM only if we're already associated.
1305                  * If we're not, we'll enter it when joining an SSID,
1306                  * through the bss_info_changed() hook.
1307                  */
1308                 if (test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags)) {
1309                         wl1271_debug(DEBUG_PSM, "psm enabled");
1310                         ret = wl1271_ps_set_mode(wl, STATION_POWER_SAVE_MODE,
1311                                                  true);
1312                 }
1313         } else if (!(conf->flags & IEEE80211_CONF_PS) &&
1314                    test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags)) {
1315                 wl1271_debug(DEBUG_PSM, "psm disabled");
1316
1317                 clear_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags);
1318
1319                 if (test_bit(WL1271_FLAG_PSM, &wl->flags))
1320                         ret = wl1271_ps_set_mode(wl, STATION_ACTIVE_MODE,
1321                                                  true);
1322         }
1323
1324         if (conf->power_level != wl->power_level) {
1325                 ret = wl1271_acx_tx_power(wl, conf->power_level);
1326                 if (ret < 0)
1327                         goto out_sleep;
1328
1329                 wl->power_level = conf->power_level;
1330         }
1331
1332 out_sleep:
1333         wl1271_ps_elp_sleep(wl);
1334
1335 out:
1336         mutex_unlock(&wl->mutex);
1337
1338         return ret;
1339 }
1340
1341 struct wl1271_filter_params {
1342         bool enabled;
1343         int mc_list_length;
1344         u8 mc_list[ACX_MC_ADDRESS_GROUP_MAX][ETH_ALEN];
1345 };
1346
1347 static u64 wl1271_op_prepare_multicast(struct ieee80211_hw *hw,
1348                                        struct netdev_hw_addr_list *mc_list)
1349 {
1350         struct wl1271_filter_params *fp;
1351         struct netdev_hw_addr *ha;
1352         struct wl1271 *wl = hw->priv;
1353
1354         if (unlikely(wl->state == WL1271_STATE_OFF))
1355                 return 0;
1356
1357         fp = kzalloc(sizeof(*fp), GFP_ATOMIC);
1358         if (!fp) {
1359                 wl1271_error("Out of memory setting filters.");
1360                 return 0;
1361         }
1362
1363         /* update multicast filtering parameters */
1364         fp->mc_list_length = 0;
1365         if (netdev_hw_addr_list_count(mc_list) > ACX_MC_ADDRESS_GROUP_MAX) {
1366                 fp->enabled = false;
1367         } else {
1368                 fp->enabled = true;
1369                 netdev_hw_addr_list_for_each(ha, mc_list) {
1370                         memcpy(fp->mc_list[fp->mc_list_length],
1371                                         ha->addr, ETH_ALEN);
1372                         fp->mc_list_length++;
1373                 }
1374         }
1375
1376         return (u64)(unsigned long)fp;
1377 }
1378
1379 #define WL1271_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
1380                                   FIF_ALLMULTI | \
1381                                   FIF_FCSFAIL | \
1382                                   FIF_BCN_PRBRESP_PROMISC | \
1383                                   FIF_CONTROL | \
1384                                   FIF_OTHER_BSS)
1385
1386 static void wl1271_op_configure_filter(struct ieee80211_hw *hw,
1387                                        unsigned int changed,
1388                                        unsigned int *total, u64 multicast)
1389 {
1390         struct wl1271_filter_params *fp = (void *)(unsigned long)multicast;
1391         struct wl1271 *wl = hw->priv;
1392         int ret;
1393
1394         wl1271_debug(DEBUG_MAC80211, "mac80211 configure filter");
1395
1396         mutex_lock(&wl->mutex);
1397
1398         *total &= WL1271_SUPPORTED_FILTERS;
1399         changed &= WL1271_SUPPORTED_FILTERS;
1400
1401         if (unlikely(wl->state == WL1271_STATE_OFF))
1402                 goto out;
1403
1404         ret = wl1271_ps_elp_wakeup(wl, false);
1405         if (ret < 0)
1406                 goto out;
1407
1408
1409         if (*total & FIF_ALLMULTI)
1410                 ret = wl1271_acx_group_address_tbl(wl, false, NULL, 0);
1411         else if (fp)
1412                 ret = wl1271_acx_group_address_tbl(wl, fp->enabled,
1413                                                    fp->mc_list,
1414                                                    fp->mc_list_length);
1415         if (ret < 0)
1416                 goto out_sleep;
1417
1418         /* determine, whether supported filter values have changed */
1419         if (changed == 0)
1420                 goto out_sleep;
1421
1422         /* configure filters */
1423         wl->filters = *total;
1424         wl1271_configure_filters(wl, 0);
1425
1426         /* apply configured filters */
1427         ret = wl1271_acx_rx_config(wl, wl->rx_config, wl->rx_filter);
1428         if (ret < 0)
1429                 goto out_sleep;
1430
1431 out_sleep:
1432         wl1271_ps_elp_sleep(wl);
1433
1434 out:
1435         mutex_unlock(&wl->mutex);
1436         kfree(fp);
1437 }
1438
1439 static int wl1271_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
1440                              struct ieee80211_vif *vif,
1441                              struct ieee80211_sta *sta,
1442                              struct ieee80211_key_conf *key_conf)
1443 {
1444         struct wl1271 *wl = hw->priv;
1445         const u8 *addr;
1446         int ret;
1447         u32 tx_seq_32 = 0;
1448         u16 tx_seq_16 = 0;
1449         u8 key_type;
1450
1451         static const u8 bcast_addr[ETH_ALEN] =
1452                 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
1453
1454         wl1271_debug(DEBUG_MAC80211, "mac80211 set key");
1455
1456         addr = sta ? sta->addr : bcast_addr;
1457
1458         wl1271_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
1459         wl1271_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
1460         wl1271_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
1461                      key_conf->alg, key_conf->keyidx,
1462                      key_conf->keylen, key_conf->flags);
1463         wl1271_dump(DEBUG_CRYPT, "KEY: ", key_conf->key, key_conf->keylen);
1464
1465         if (is_zero_ether_addr(addr)) {
1466                 /* We dont support TX only encryption */
1467                 ret = -EOPNOTSUPP;
1468                 goto out;
1469         }
1470
1471         mutex_lock(&wl->mutex);
1472
1473         ret = wl1271_ps_elp_wakeup(wl, false);
1474         if (ret < 0)
1475                 goto out_unlock;
1476
1477         switch (key_conf->alg) {
1478         case ALG_WEP:
1479                 key_type = KEY_WEP;
1480
1481                 key_conf->hw_key_idx = key_conf->keyidx;
1482                 break;
1483         case ALG_TKIP:
1484                 key_type = KEY_TKIP;
1485
1486                 key_conf->hw_key_idx = key_conf->keyidx;
1487                 tx_seq_32 = WL1271_TX_SECURITY_HI32(wl->tx_security_seq);
1488                 tx_seq_16 = WL1271_TX_SECURITY_LO16(wl->tx_security_seq);
1489                 break;
1490         case ALG_CCMP:
1491                 key_type = KEY_AES;
1492
1493                 key_conf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1494                 tx_seq_32 = WL1271_TX_SECURITY_HI32(wl->tx_security_seq);
1495                 tx_seq_16 = WL1271_TX_SECURITY_LO16(wl->tx_security_seq);
1496                 break;
1497         default:
1498                 wl1271_error("Unknown key algo 0x%x", key_conf->alg);
1499
1500                 ret = -EOPNOTSUPP;
1501                 goto out_sleep;
1502         }
1503
1504         switch (cmd) {
1505         case SET_KEY:
1506                 ret = wl1271_cmd_set_key(wl, KEY_ADD_OR_REPLACE,
1507                                          key_conf->keyidx, key_type,
1508                                          key_conf->keylen, key_conf->key,
1509                                          addr, tx_seq_32, tx_seq_16);
1510                 if (ret < 0) {
1511                         wl1271_error("Could not add or replace key");
1512                         goto out_sleep;
1513                 }
1514
1515                 /* the default WEP key needs to be configured at least once */
1516                 if (key_type == KEY_WEP) {
1517                         ret = wl1271_cmd_set_default_wep_key(wl,
1518                                                              wl->default_key);
1519                         if (ret < 0)
1520                                 goto out_sleep;
1521                 }
1522                 break;
1523
1524         case DISABLE_KEY:
1525                 /* The wl1271 does not allow to remove unicast keys - they
1526                    will be cleared automatically on next CMD_JOIN. Ignore the
1527                    request silently, as we dont want the mac80211 to emit
1528                    an error message. */
1529                 if (!is_broadcast_ether_addr(addr))
1530                         break;
1531
1532                 ret = wl1271_cmd_set_key(wl, KEY_REMOVE,
1533                                          key_conf->keyidx, key_type,
1534                                          key_conf->keylen, key_conf->key,
1535                                          addr, 0, 0);
1536                 if (ret < 0) {
1537                         wl1271_error("Could not remove key");
1538                         goto out_sleep;
1539                 }
1540                 break;
1541
1542         default:
1543                 wl1271_error("Unsupported key cmd 0x%x", cmd);
1544                 ret = -EOPNOTSUPP;
1545                 goto out_sleep;
1546
1547                 break;
1548         }
1549
1550 out_sleep:
1551         wl1271_ps_elp_sleep(wl);
1552
1553 out_unlock:
1554         mutex_unlock(&wl->mutex);
1555
1556 out:
1557         return ret;
1558 }
1559
1560 static int wl1271_op_hw_scan(struct ieee80211_hw *hw,
1561                              struct ieee80211_vif *vif,
1562                              struct cfg80211_scan_request *req)
1563 {
1564         struct wl1271 *wl = hw->priv;
1565         int ret;
1566         u8 *ssid = NULL;
1567         size_t len = 0;
1568
1569         wl1271_debug(DEBUG_MAC80211, "mac80211 hw scan");
1570
1571         if (req->n_ssids) {
1572                 ssid = req->ssids[0].ssid;
1573                 len = req->ssids[0].ssid_len;
1574         }
1575
1576         mutex_lock(&wl->mutex);
1577
1578         ret = wl1271_ps_elp_wakeup(wl, false);
1579         if (ret < 0)
1580                 goto out;
1581
1582         if (wl1271_11a_enabled())
1583                 ret = wl1271_cmd_scan(hw->priv, ssid, len,
1584                                       req->ie, req->ie_len, 1, 0,
1585                                       WL1271_SCAN_BAND_DUAL, 3);
1586         else
1587                 ret = wl1271_cmd_scan(hw->priv, ssid, len,
1588                                       req->ie, req->ie_len, 1, 0,
1589                                       WL1271_SCAN_BAND_2_4_GHZ, 3);
1590
1591         wl1271_ps_elp_sleep(wl);
1592
1593 out:
1594         mutex_unlock(&wl->mutex);
1595
1596         return ret;
1597 }
1598
1599 static int wl1271_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1600 {
1601         struct wl1271 *wl = hw->priv;
1602         int ret = 0;
1603
1604         mutex_lock(&wl->mutex);
1605
1606         if (unlikely(wl->state == WL1271_STATE_OFF))
1607                 goto out;
1608
1609         ret = wl1271_ps_elp_wakeup(wl, false);
1610         if (ret < 0)
1611                 goto out;
1612
1613         ret = wl1271_acx_rts_threshold(wl, (u16) value);
1614         if (ret < 0)
1615                 wl1271_warning("wl1271_op_set_rts_threshold failed: %d", ret);
1616
1617         wl1271_ps_elp_sleep(wl);
1618
1619 out:
1620         mutex_unlock(&wl->mutex);
1621
1622         return ret;
1623 }
1624
1625 static void wl1271_ssid_set(struct wl1271 *wl, struct sk_buff *beacon)
1626 {
1627         u8 *ptr = beacon->data +
1628                 offsetof(struct ieee80211_mgmt, u.beacon.variable);
1629
1630         /* find the location of the ssid in the beacon */
1631         while (ptr < beacon->data + beacon->len) {
1632                 if (ptr[0] == WLAN_EID_SSID) {
1633                         wl->ssid_len = ptr[1];
1634                         memcpy(wl->ssid, ptr+2, wl->ssid_len);
1635                         return;
1636                 }
1637                 ptr += ptr[1];
1638         }
1639         wl1271_error("ad-hoc beacon template has no SSID!\n");
1640 }
1641
1642 static void wl1271_op_bss_info_changed(struct ieee80211_hw *hw,
1643                                        struct ieee80211_vif *vif,
1644                                        struct ieee80211_bss_conf *bss_conf,
1645                                        u32 changed)
1646 {
1647         enum wl1271_cmd_ps_mode mode;
1648         struct wl1271 *wl = hw->priv;
1649         bool do_join = false;
1650         int ret;
1651
1652         wl1271_debug(DEBUG_MAC80211, "mac80211 bss info changed");
1653
1654         mutex_lock(&wl->mutex);
1655
1656         ret = wl1271_ps_elp_wakeup(wl, false);
1657         if (ret < 0)
1658                 goto out;
1659
1660         if ((changed && BSS_CHANGED_BEACON_INT) &&
1661             (wl->bss_type == BSS_TYPE_IBSS)) {
1662                 wl1271_debug(DEBUG_ADHOC, "ad-hoc beacon interval updated: %d",
1663                         bss_conf->beacon_int);
1664
1665                 wl->beacon_int = bss_conf->beacon_int;
1666                 do_join = true;
1667         }
1668
1669         if ((changed && BSS_CHANGED_BEACON) &&
1670             (wl->bss_type == BSS_TYPE_IBSS)) {
1671                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
1672
1673                 wl1271_debug(DEBUG_ADHOC, "ad-hoc beacon updated");
1674
1675                 if (beacon) {
1676                         struct ieee80211_hdr *hdr;
1677
1678                         wl1271_ssid_set(wl, beacon);
1679                         ret = wl1271_cmd_template_set(wl, CMD_TEMPL_BEACON,
1680                                                       beacon->data,
1681                                                       beacon->len, 0,
1682                                                       wl1271_min_rate_get(wl));
1683
1684                         if (ret < 0) {
1685                                 dev_kfree_skb(beacon);
1686                                 goto out_sleep;
1687                         }
1688
1689                         hdr = (struct ieee80211_hdr *) beacon->data;
1690                         hdr->frame_control = cpu_to_le16(
1691                                 IEEE80211_FTYPE_MGMT |
1692                                 IEEE80211_STYPE_PROBE_RESP);
1693
1694                         ret = wl1271_cmd_template_set(wl,
1695                                                       CMD_TEMPL_PROBE_RESPONSE,
1696                                                       beacon->data,
1697                                                       beacon->len, 0,
1698                                                       wl1271_min_rate_get(wl));
1699                         dev_kfree_skb(beacon);
1700                         if (ret < 0)
1701                                 goto out_sleep;
1702
1703                         /* Need to update the SSID (for filtering etc) */
1704                         do_join = true;
1705                 }
1706         }
1707
1708         if ((changed & BSS_CHANGED_BEACON_ENABLED) &&
1709             (wl->bss_type == BSS_TYPE_IBSS)) {
1710                 wl1271_debug(DEBUG_ADHOC, "ad-hoc beaconing: %s",
1711                              bss_conf->enable_beacon ? "enabled" : "disabled");
1712
1713                 if (bss_conf->enable_beacon)
1714                         wl->set_bss_type = BSS_TYPE_IBSS;
1715                 else
1716                         wl->set_bss_type = BSS_TYPE_STA_BSS;
1717                 do_join = true;
1718         }
1719
1720         if (changed & BSS_CHANGED_CQM) {
1721                 bool enable = false;
1722                 if (bss_conf->cqm_rssi_thold)
1723                         enable = true;
1724                 ret = wl1271_acx_rssi_snr_trigger(wl, enable,
1725                                                   bss_conf->cqm_rssi_thold,
1726                                                   bss_conf->cqm_rssi_hyst);
1727                 if (ret < 0)
1728                         goto out;
1729                 wl->rssi_thold = bss_conf->cqm_rssi_thold;
1730         }
1731
1732         if ((changed & BSS_CHANGED_BSSID) &&
1733             /*
1734              * Now we know the correct bssid, so we send a new join command
1735              * and enable the BSSID filter
1736              */
1737             memcmp(wl->bssid, bss_conf->bssid, ETH_ALEN)) {
1738                         memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
1739
1740                         ret = wl1271_cmd_build_null_data(wl);
1741                         if (ret < 0)
1742                                 goto out_sleep;
1743
1744                         ret = wl1271_build_qos_null_data(wl);
1745                         if (ret < 0)
1746                                 goto out_sleep;
1747
1748                         /* filter out all packets not from this BSSID */
1749                         wl1271_configure_filters(wl, 0);
1750
1751                         /* Need to update the BSSID (for filtering etc) */
1752                         do_join = true;
1753         }
1754
1755         if (changed & BSS_CHANGED_ASSOC) {
1756                 if (bss_conf->assoc) {
1757                         u32 rates;
1758                         wl->aid = bss_conf->aid;
1759                         set_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags);
1760
1761                         /*
1762                          * use basic rates from AP, and determine lowest rate
1763                          * to use with control frames.
1764                          */
1765                         rates = bss_conf->basic_rates;
1766                         wl->basic_rate_set = wl1271_tx_enabled_rates_get(wl,
1767                                                                          rates);
1768                         wl->basic_rate = wl1271_min_rate_get(wl);
1769                         ret = wl1271_acx_rate_policies(wl);
1770                         if (ret < 0)
1771                                 goto out_sleep;
1772
1773                         /*
1774                          * with wl1271, we don't need to update the
1775                          * beacon_int and dtim_period, because the firmware
1776                          * updates it by itself when the first beacon is
1777                          * received after a join.
1778                          */
1779                         ret = wl1271_cmd_build_ps_poll(wl, wl->aid);
1780                         if (ret < 0)
1781                                 goto out_sleep;
1782
1783                         /*
1784                          * The SSID is intentionally set to NULL here - the
1785                          * firmware will set the probe request with a
1786                          * broadcast SSID regardless of what we set in the
1787                          * template.
1788                          */
1789                         ret = wl1271_cmd_build_probe_req(wl, NULL, 0,
1790                                                          NULL, 0, wl->band);
1791
1792                         /* enable the connection monitoring feature */
1793                         ret = wl1271_acx_conn_monit_params(wl, true);
1794                         if (ret < 0)
1795                                 goto out_sleep;
1796
1797                         /* If we want to go in PSM but we're not there yet */
1798                         if (test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags) &&
1799                             !test_bit(WL1271_FLAG_PSM, &wl->flags)) {
1800                                 mode = STATION_POWER_SAVE_MODE;
1801                                 ret = wl1271_ps_set_mode(wl, mode, true);
1802                                 if (ret < 0)
1803                                         goto out_sleep;
1804                         }
1805                 } else {
1806                         /* use defaults when not associated */
1807                         clear_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags);
1808                         wl->aid = 0;
1809
1810                         /* revert back to minimum rates for the current band */
1811                         wl1271_set_band_rate(wl);
1812                         wl->basic_rate = wl1271_min_rate_get(wl);
1813                         ret = wl1271_acx_rate_policies(wl);
1814                         if (ret < 0)
1815                                 goto out_sleep;
1816
1817                         /* disable connection monitor features */
1818                         ret = wl1271_acx_conn_monit_params(wl, false);
1819
1820                         /* Disable the keep-alive feature */
1821                         ret = wl1271_acx_keep_alive_mode(wl, false);
1822
1823                         if (ret < 0)
1824                                 goto out_sleep;
1825                 }
1826
1827         }
1828
1829         if (changed & BSS_CHANGED_ERP_SLOT) {
1830                 if (bss_conf->use_short_slot)
1831                         ret = wl1271_acx_slot(wl, SLOT_TIME_SHORT);
1832                 else
1833                         ret = wl1271_acx_slot(wl, SLOT_TIME_LONG);
1834                 if (ret < 0) {
1835                         wl1271_warning("Set slot time failed %d", ret);
1836                         goto out_sleep;
1837                 }
1838         }
1839
1840         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1841                 if (bss_conf->use_short_preamble)
1842                         wl1271_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1843                 else
1844                         wl1271_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1845         }
1846
1847         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1848                 if (bss_conf->use_cts_prot)
1849                         ret = wl1271_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1850                 else
1851                         ret = wl1271_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1852                 if (ret < 0) {
1853                         wl1271_warning("Set ctsprotect failed %d", ret);
1854                         goto out_sleep;
1855                 }
1856         }
1857
1858         if (do_join) {
1859                 ret = wl1271_join(wl);
1860                 if (ret < 0) {
1861                         wl1271_warning("cmd join failed %d", ret);
1862                         goto out_sleep;
1863                 }
1864         }
1865
1866 out_sleep:
1867         wl1271_ps_elp_sleep(wl);
1868
1869 out:
1870         mutex_unlock(&wl->mutex);
1871 }
1872
1873 static int wl1271_op_conf_tx(struct ieee80211_hw *hw, u16 queue,
1874                              const struct ieee80211_tx_queue_params *params)
1875 {
1876         struct wl1271 *wl = hw->priv;
1877         u8 ps_scheme;
1878         int ret;
1879
1880         mutex_lock(&wl->mutex);
1881
1882         wl1271_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
1883
1884         ret = wl1271_ps_elp_wakeup(wl, false);
1885         if (ret < 0)
1886                 goto out;
1887
1888         /* the txop is confed in units of 32us by the mac80211, we need us */
1889         ret = wl1271_acx_ac_cfg(wl, wl1271_tx_get_queue(queue),
1890                                 params->cw_min, params->cw_max,
1891                                 params->aifs, params->txop << 5);
1892         if (ret < 0)
1893                 goto out_sleep;
1894
1895         if (params->uapsd)
1896                 ps_scheme = CONF_PS_SCHEME_UPSD_TRIGGER;
1897         else
1898                 ps_scheme = CONF_PS_SCHEME_LEGACY;
1899
1900         ret = wl1271_acx_tid_cfg(wl, wl1271_tx_get_queue(queue),
1901                                  CONF_CHANNEL_TYPE_EDCF,
1902                                  wl1271_tx_get_queue(queue),
1903                                  ps_scheme, CONF_ACK_POLICY_LEGACY, 0, 0);
1904         if (ret < 0)
1905                 goto out_sleep;
1906
1907 out_sleep:
1908         wl1271_ps_elp_sleep(wl);
1909
1910 out:
1911         mutex_unlock(&wl->mutex);
1912
1913         return ret;
1914 }
1915
1916
1917 /* can't be const, mac80211 writes to this */
1918 static struct ieee80211_rate wl1271_rates[] = {
1919         { .bitrate = 10,
1920           .hw_value = CONF_HW_BIT_RATE_1MBPS,
1921           .hw_value_short = CONF_HW_BIT_RATE_1MBPS, },
1922         { .bitrate = 20,
1923           .hw_value = CONF_HW_BIT_RATE_2MBPS,
1924           .hw_value_short = CONF_HW_BIT_RATE_2MBPS,
1925           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1926         { .bitrate = 55,
1927           .hw_value = CONF_HW_BIT_RATE_5_5MBPS,
1928           .hw_value_short = CONF_HW_BIT_RATE_5_5MBPS,
1929           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1930         { .bitrate = 110,
1931           .hw_value = CONF_HW_BIT_RATE_11MBPS,
1932           .hw_value_short = CONF_HW_BIT_RATE_11MBPS,
1933           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1934         { .bitrate = 60,
1935           .hw_value = CONF_HW_BIT_RATE_6MBPS,
1936           .hw_value_short = CONF_HW_BIT_RATE_6MBPS, },
1937         { .bitrate = 90,
1938           .hw_value = CONF_HW_BIT_RATE_9MBPS,
1939           .hw_value_short = CONF_HW_BIT_RATE_9MBPS, },
1940         { .bitrate = 120,
1941           .hw_value = CONF_HW_BIT_RATE_12MBPS,
1942           .hw_value_short = CONF_HW_BIT_RATE_12MBPS, },
1943         { .bitrate = 180,
1944           .hw_value = CONF_HW_BIT_RATE_18MBPS,
1945           .hw_value_short = CONF_HW_BIT_RATE_18MBPS, },
1946         { .bitrate = 240,
1947           .hw_value = CONF_HW_BIT_RATE_24MBPS,
1948           .hw_value_short = CONF_HW_BIT_RATE_24MBPS, },
1949         { .bitrate = 360,
1950          .hw_value = CONF_HW_BIT_RATE_36MBPS,
1951          .hw_value_short = CONF_HW_BIT_RATE_36MBPS, },
1952         { .bitrate = 480,
1953           .hw_value = CONF_HW_BIT_RATE_48MBPS,
1954           .hw_value_short = CONF_HW_BIT_RATE_48MBPS, },
1955         { .bitrate = 540,
1956           .hw_value = CONF_HW_BIT_RATE_54MBPS,
1957           .hw_value_short = CONF_HW_BIT_RATE_54MBPS, },
1958 };
1959
1960 /* can't be const, mac80211 writes to this */
1961 static struct ieee80211_channel wl1271_channels[] = {
1962         { .hw_value = 1, .center_freq = 2412, .max_power = 25 },
1963         { .hw_value = 2, .center_freq = 2417, .max_power = 25 },
1964         { .hw_value = 3, .center_freq = 2422, .max_power = 25 },
1965         { .hw_value = 4, .center_freq = 2427, .max_power = 25 },
1966         { .hw_value = 5, .center_freq = 2432, .max_power = 25 },
1967         { .hw_value = 6, .center_freq = 2437, .max_power = 25 },
1968         { .hw_value = 7, .center_freq = 2442, .max_power = 25 },
1969         { .hw_value = 8, .center_freq = 2447, .max_power = 25 },
1970         { .hw_value = 9, .center_freq = 2452, .max_power = 25 },
1971         { .hw_value = 10, .center_freq = 2457, .max_power = 25 },
1972         { .hw_value = 11, .center_freq = 2462, .max_power = 25 },
1973         { .hw_value = 12, .center_freq = 2467, .max_power = 25 },
1974         { .hw_value = 13, .center_freq = 2472, .max_power = 25 },
1975 };
1976
1977 /* mapping to indexes for wl1271_rates */
1978 const static u8 wl1271_rate_to_idx_2ghz[] = {
1979         /* MCS rates are used only with 11n */
1980         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS7 */
1981         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS6 */
1982         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS5 */
1983         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS4 */
1984         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS3 */
1985         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS2 */
1986         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS1 */
1987         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS0 */
1988
1989         11,                            /* CONF_HW_RXTX_RATE_54   */
1990         10,                            /* CONF_HW_RXTX_RATE_48   */
1991         9,                             /* CONF_HW_RXTX_RATE_36   */
1992         8,                             /* CONF_HW_RXTX_RATE_24   */
1993
1994         /* TI-specific rate */
1995         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_22   */
1996
1997         7,                             /* CONF_HW_RXTX_RATE_18   */
1998         6,                             /* CONF_HW_RXTX_RATE_12   */
1999         3,                             /* CONF_HW_RXTX_RATE_11   */
2000         5,                             /* CONF_HW_RXTX_RATE_9    */
2001         4,                             /* CONF_HW_RXTX_RATE_6    */
2002         2,                             /* CONF_HW_RXTX_RATE_5_5  */
2003         1,                             /* CONF_HW_RXTX_RATE_2    */
2004         0                              /* CONF_HW_RXTX_RATE_1    */
2005 };
2006
2007 /* can't be const, mac80211 writes to this */
2008 static struct ieee80211_supported_band wl1271_band_2ghz = {
2009         .channels = wl1271_channels,
2010         .n_channels = ARRAY_SIZE(wl1271_channels),
2011         .bitrates = wl1271_rates,
2012         .n_bitrates = ARRAY_SIZE(wl1271_rates),
2013 };
2014
2015 /* 5 GHz data rates for WL1273 */
2016 static struct ieee80211_rate wl1271_rates_5ghz[] = {
2017         { .bitrate = 60,
2018           .hw_value = CONF_HW_BIT_RATE_6MBPS,
2019           .hw_value_short = CONF_HW_BIT_RATE_6MBPS, },
2020         { .bitrate = 90,
2021           .hw_value = CONF_HW_BIT_RATE_9MBPS,
2022           .hw_value_short = CONF_HW_BIT_RATE_9MBPS, },
2023         { .bitrate = 120,
2024           .hw_value = CONF_HW_BIT_RATE_12MBPS,
2025           .hw_value_short = CONF_HW_BIT_RATE_12MBPS, },
2026         { .bitrate = 180,
2027           .hw_value = CONF_HW_BIT_RATE_18MBPS,
2028           .hw_value_short = CONF_HW_BIT_RATE_18MBPS, },
2029         { .bitrate = 240,
2030           .hw_value = CONF_HW_BIT_RATE_24MBPS,
2031           .hw_value_short = CONF_HW_BIT_RATE_24MBPS, },
2032         { .bitrate = 360,
2033          .hw_value = CONF_HW_BIT_RATE_36MBPS,
2034          .hw_value_short = CONF_HW_BIT_RATE_36MBPS, },
2035         { .bitrate = 480,
2036           .hw_value = CONF_HW_BIT_RATE_48MBPS,
2037           .hw_value_short = CONF_HW_BIT_RATE_48MBPS, },
2038         { .bitrate = 540,
2039           .hw_value = CONF_HW_BIT_RATE_54MBPS,
2040           .hw_value_short = CONF_HW_BIT_RATE_54MBPS, },
2041 };
2042
2043 /* 5 GHz band channels for WL1273 */
2044 static struct ieee80211_channel wl1271_channels_5ghz[] = {
2045         { .hw_value = 183, .center_freq = 4915},
2046         { .hw_value = 184, .center_freq = 4920},
2047         { .hw_value = 185, .center_freq = 4925},
2048         { .hw_value = 187, .center_freq = 4935},
2049         { .hw_value = 188, .center_freq = 4940},
2050         { .hw_value = 189, .center_freq = 4945},
2051         { .hw_value = 192, .center_freq = 4960},
2052         { .hw_value = 196, .center_freq = 4980},
2053         { .hw_value = 7, .center_freq = 5035},
2054         { .hw_value = 8, .center_freq = 5040},
2055         { .hw_value = 9, .center_freq = 5045},
2056         { .hw_value = 11, .center_freq = 5055},
2057         { .hw_value = 12, .center_freq = 5060},
2058         { .hw_value = 16, .center_freq = 5080},
2059         { .hw_value = 34, .center_freq = 5170},
2060         { .hw_value = 36, .center_freq = 5180},
2061         { .hw_value = 38, .center_freq = 5190},
2062         { .hw_value = 40, .center_freq = 5200},
2063         { .hw_value = 42, .center_freq = 5210},
2064         { .hw_value = 44, .center_freq = 5220},
2065         { .hw_value = 46, .center_freq = 5230},
2066         { .hw_value = 48, .center_freq = 5240},
2067         { .hw_value = 52, .center_freq = 5260},
2068         { .hw_value = 56, .center_freq = 5280},
2069         { .hw_value = 60, .center_freq = 5300},
2070         { .hw_value = 64, .center_freq = 5320},
2071         { .hw_value = 100, .center_freq = 5500},
2072         { .hw_value = 104, .center_freq = 5520},
2073         { .hw_value = 108, .center_freq = 5540},
2074         { .hw_value = 112, .center_freq = 5560},
2075         { .hw_value = 116, .center_freq = 5580},
2076         { .hw_value = 120, .center_freq = 5600},
2077         { .hw_value = 124, .center_freq = 5620},
2078         { .hw_value = 128, .center_freq = 5640},
2079         { .hw_value = 132, .center_freq = 5660},
2080         { .hw_value = 136, .center_freq = 5680},
2081         { .hw_value = 140, .center_freq = 5700},
2082         { .hw_value = 149, .center_freq = 5745},
2083         { .hw_value = 153, .center_freq = 5765},
2084         { .hw_value = 157, .center_freq = 5785},
2085         { .hw_value = 161, .center_freq = 5805},
2086         { .hw_value = 165, .center_freq = 5825},
2087 };
2088
2089 /* mapping to indexes for wl1271_rates_5ghz */
2090 const static u8 wl1271_rate_to_idx_5ghz[] = {
2091         /* MCS rates are used only with 11n */
2092         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS7 */
2093         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS6 */
2094         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS5 */
2095         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS4 */
2096         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS3 */
2097         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS2 */
2098         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS1 */
2099         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS0 */
2100
2101         7,                             /* CONF_HW_RXTX_RATE_54   */
2102         6,                             /* CONF_HW_RXTX_RATE_48   */
2103         5,                             /* CONF_HW_RXTX_RATE_36   */
2104         4,                             /* CONF_HW_RXTX_RATE_24   */
2105
2106         /* TI-specific rate */
2107         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_22   */
2108
2109         3,                             /* CONF_HW_RXTX_RATE_18   */
2110         2,                             /* CONF_HW_RXTX_RATE_12   */
2111         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_11   */
2112         1,                             /* CONF_HW_RXTX_RATE_9    */
2113         0,                             /* CONF_HW_RXTX_RATE_6    */
2114         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_5_5  */
2115         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_2    */
2116         CONF_HW_RXTX_RATE_UNSUPPORTED  /* CONF_HW_RXTX_RATE_1    */
2117 };
2118
2119 static struct ieee80211_supported_band wl1271_band_5ghz = {
2120         .channels = wl1271_channels_5ghz,
2121         .n_channels = ARRAY_SIZE(wl1271_channels_5ghz),
2122         .bitrates = wl1271_rates_5ghz,
2123         .n_bitrates = ARRAY_SIZE(wl1271_rates_5ghz),
2124 };
2125
2126 const static u8 *wl1271_band_rate_to_idx[] = {
2127         [IEEE80211_BAND_2GHZ] = wl1271_rate_to_idx_2ghz,
2128         [IEEE80211_BAND_5GHZ] = wl1271_rate_to_idx_5ghz
2129 };
2130
2131 static const struct ieee80211_ops wl1271_ops = {
2132         .start = wl1271_op_start,
2133         .stop = wl1271_op_stop,
2134         .add_interface = wl1271_op_add_interface,
2135         .remove_interface = wl1271_op_remove_interface,
2136         .config = wl1271_op_config,
2137         .prepare_multicast = wl1271_op_prepare_multicast,
2138         .configure_filter = wl1271_op_configure_filter,
2139         .tx = wl1271_op_tx,
2140         .set_key = wl1271_op_set_key,
2141         .hw_scan = wl1271_op_hw_scan,
2142         .bss_info_changed = wl1271_op_bss_info_changed,
2143         .set_rts_threshold = wl1271_op_set_rts_threshold,
2144         .conf_tx = wl1271_op_conf_tx,
2145         CFG80211_TESTMODE_CMD(wl1271_tm_cmd)
2146 };
2147
2148
2149 u8 wl1271_rate_to_idx(struct wl1271 *wl, int rate)
2150 {
2151         u8 idx;
2152
2153         BUG_ON(wl->band >= sizeof(wl1271_band_rate_to_idx)/sizeof(u8 *));
2154
2155         if (unlikely(rate >= CONF_HW_RXTX_RATE_MAX)) {
2156                 wl1271_error("Illegal RX rate from HW: %d", rate);
2157                 return 0;
2158         }
2159
2160         idx = wl1271_band_rate_to_idx[wl->band][rate];
2161         if (unlikely(idx == CONF_HW_RXTX_RATE_UNSUPPORTED)) {
2162                 wl1271_error("Unsupported RX rate from HW: %d", rate);
2163                 return 0;
2164         }
2165
2166         return idx;
2167 }
2168
2169 static ssize_t wl1271_sysfs_show_bt_coex_state(struct device *dev,
2170                                                struct device_attribute *attr,
2171                                                char *buf)
2172 {
2173         struct wl1271 *wl = dev_get_drvdata(dev);
2174         ssize_t len;
2175
2176         /* FIXME: what's the maximum length of buf? page size?*/
2177         len = 500;
2178
2179         mutex_lock(&wl->mutex);
2180         len = snprintf(buf, len, "%d\n\n0 - off\n1 - on\n",
2181                        wl->sg_enabled);
2182         mutex_unlock(&wl->mutex);
2183
2184         return len;
2185
2186 }
2187
2188 static ssize_t wl1271_sysfs_store_bt_coex_state(struct device *dev,
2189                                                 struct device_attribute *attr,
2190                                                 const char *buf, size_t count)
2191 {
2192         struct wl1271 *wl = dev_get_drvdata(dev);
2193         unsigned long res;
2194         int ret;
2195
2196         ret = strict_strtoul(buf, 10, &res);
2197
2198         if (ret < 0) {
2199                 wl1271_warning("incorrect value written to bt_coex_mode");
2200                 return count;
2201         }
2202
2203         mutex_lock(&wl->mutex);
2204
2205         res = !!res;
2206
2207         if (res == wl->sg_enabled)
2208                 goto out;
2209
2210         wl->sg_enabled = res;
2211
2212         if (wl->state == WL1271_STATE_OFF)
2213                 goto out;
2214
2215         ret = wl1271_ps_elp_wakeup(wl, false);
2216         if (ret < 0)
2217                 goto out;
2218
2219         wl1271_acx_sg_enable(wl, wl->sg_enabled);
2220         wl1271_ps_elp_sleep(wl);
2221
2222  out:
2223         mutex_unlock(&wl->mutex);
2224         return count;
2225 }
2226
2227 static DEVICE_ATTR(bt_coex_state, S_IRUGO | S_IWUSR,
2228                    wl1271_sysfs_show_bt_coex_state,
2229                    wl1271_sysfs_store_bt_coex_state);
2230
2231 int wl1271_register_hw(struct wl1271 *wl)
2232 {
2233         int ret;
2234
2235         if (wl->mac80211_registered)
2236                 return 0;
2237
2238         SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
2239
2240         ret = ieee80211_register_hw(wl->hw);
2241         if (ret < 0) {
2242                 wl1271_error("unable to register mac80211 hw: %d", ret);
2243                 return ret;
2244         }
2245
2246         wl->mac80211_registered = true;
2247
2248         wl1271_notice("loaded");
2249
2250         return 0;
2251 }
2252 EXPORT_SYMBOL_GPL(wl1271_register_hw);
2253
2254 void wl1271_unregister_hw(struct wl1271 *wl)
2255 {
2256         ieee80211_unregister_hw(wl->hw);
2257         wl->mac80211_registered = false;
2258
2259 }
2260 EXPORT_SYMBOL_GPL(wl1271_unregister_hw);
2261
2262 int wl1271_init_ieee80211(struct wl1271 *wl)
2263 {
2264         /* The tx descriptor buffer and the TKIP space. */
2265         wl->hw->extra_tx_headroom = WL1271_TKIP_IV_SPACE +
2266                 sizeof(struct wl1271_tx_hw_descr);
2267
2268         /* unit us */
2269         /* FIXME: find a proper value */
2270         wl->hw->channel_change_time = 10000;
2271         wl->hw->max_listen_interval = wl->conf.conn.max_listen_interval;
2272
2273         wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
2274                 IEEE80211_HW_BEACON_FILTER |
2275                 IEEE80211_HW_SUPPORTS_PS |
2276                 IEEE80211_HW_SUPPORTS_UAPSD |
2277                 IEEE80211_HW_HAS_RATE_CONTROL |
2278                 IEEE80211_HW_CONNECTION_MONITOR |
2279                 IEEE80211_HW_SUPPORTS_CQM_RSSI;
2280
2281         wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2282                 BIT(NL80211_IFTYPE_ADHOC);
2283         wl->hw->wiphy->max_scan_ssids = 1;
2284         wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1271_band_2ghz;
2285
2286         if (wl1271_11a_enabled())
2287                 wl->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &wl1271_band_5ghz;
2288
2289         wl->hw->queues = 4;
2290         wl->hw->max_rates = 1;
2291
2292         SET_IEEE80211_DEV(wl->hw, wl1271_wl_to_dev(wl));
2293
2294         return 0;
2295 }
2296 EXPORT_SYMBOL_GPL(wl1271_init_ieee80211);
2297
2298 #define WL1271_DEFAULT_CHANNEL 0
2299
2300 struct ieee80211_hw *wl1271_alloc_hw(void)
2301 {
2302         struct ieee80211_hw *hw;
2303         struct platform_device *plat_dev = NULL;
2304         struct wl1271 *wl;
2305         int i, ret;
2306
2307         hw = ieee80211_alloc_hw(sizeof(*wl), &wl1271_ops);
2308         if (!hw) {
2309                 wl1271_error("could not alloc ieee80211_hw");
2310                 ret = -ENOMEM;
2311                 goto err_hw_alloc;
2312         }
2313
2314         plat_dev = kmalloc(sizeof(wl1271_device), GFP_KERNEL);
2315         if (!plat_dev) {
2316                 wl1271_error("could not allocate platform_device");
2317                 ret = -ENOMEM;
2318                 goto err_plat_alloc;
2319         }
2320
2321         memcpy(plat_dev, &wl1271_device, sizeof(wl1271_device));
2322
2323         wl = hw->priv;
2324         memset(wl, 0, sizeof(*wl));
2325
2326         INIT_LIST_HEAD(&wl->list);
2327
2328         wl->hw = hw;
2329         wl->plat_dev = plat_dev;
2330
2331         skb_queue_head_init(&wl->tx_queue);
2332
2333         INIT_DELAYED_WORK(&wl->elp_work, wl1271_elp_work);
2334         wl->channel = WL1271_DEFAULT_CHANNEL;
2335         wl->beacon_int = WL1271_DEFAULT_BEACON_INT;
2336         wl->default_key = 0;
2337         wl->rx_counter = 0;
2338         wl->rx_config = WL1271_DEFAULT_RX_CONFIG;
2339         wl->rx_filter = WL1271_DEFAULT_RX_FILTER;
2340         wl->psm_entry_retry = 0;
2341         wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
2342         wl->basic_rate_set = CONF_TX_RATE_MASK_BASIC;
2343         wl->basic_rate = CONF_TX_RATE_MASK_BASIC;
2344         wl->rate_set = CONF_TX_RATE_MASK_BASIC;
2345         wl->sta_rate_set = 0;
2346         wl->band = IEEE80211_BAND_2GHZ;
2347         wl->vif = NULL;
2348         wl->flags = 0;
2349         wl->sg_enabled = true;
2350
2351         for (i = 0; i < ACX_TX_DESCRIPTORS; i++)
2352                 wl->tx_frames[i] = NULL;
2353
2354         spin_lock_init(&wl->wl_lock);
2355
2356         wl->state = WL1271_STATE_OFF;
2357         mutex_init(&wl->mutex);
2358
2359         /* Apply default driver configuration. */
2360         wl1271_conf_init(wl);
2361
2362         wl1271_debugfs_init(wl);
2363
2364         /* Register platform device */
2365         ret = platform_device_register(wl->plat_dev);
2366         if (ret) {
2367                 wl1271_error("couldn't register platform device");
2368                 goto err_hw;
2369         }
2370         dev_set_drvdata(&wl->plat_dev->dev, wl);
2371
2372         /* Create sysfs file to control bt coex state */
2373         ret = device_create_file(&wl->plat_dev->dev, &dev_attr_bt_coex_state);
2374         if (ret < 0) {
2375                 wl1271_error("failed to create sysfs file bt_coex_state");
2376                 goto err_platform;
2377         }
2378
2379         return hw;
2380
2381 err_platform:
2382         platform_device_unregister(wl->plat_dev);
2383
2384 err_hw:
2385         wl1271_debugfs_exit(wl);
2386         kfree(plat_dev);
2387
2388 err_plat_alloc:
2389         ieee80211_free_hw(hw);
2390
2391 err_hw_alloc:
2392
2393         return ERR_PTR(ret);
2394 }
2395 EXPORT_SYMBOL_GPL(wl1271_alloc_hw);
2396
2397 int wl1271_free_hw(struct wl1271 *wl)
2398 {
2399         platform_device_unregister(wl->plat_dev);
2400         kfree(wl->plat_dev);
2401
2402         wl1271_debugfs_exit(wl);
2403
2404         vfree(wl->fw);
2405         wl->fw = NULL;
2406         kfree(wl->nvs);
2407         wl->nvs = NULL;
2408
2409         kfree(wl->fw_status);
2410         kfree(wl->tx_res_if);
2411
2412         ieee80211_free_hw(wl->hw);
2413
2414         return 0;
2415 }
2416 EXPORT_SYMBOL_GPL(wl1271_free_hw);
2417
2418 MODULE_LICENSE("GPL");
2419 MODULE_AUTHOR("Luciano Coelho <luciano.coelho@nokia.com>");
2420 MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");