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_join_channel(struct wl1271 *wl, int channel)
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         wl->channel = channel;
1129         memcpy(wl->bssid, dummy_bssid, ETH_ALEN);
1130
1131         /* pass through frames from all BSS */
1132         wl1271_configure_filters(wl, FIF_OTHER_BSS);
1133
1134         ret = wl1271_cmd_join(wl, wl->set_bss_type);
1135         if (ret < 0)
1136                 goto out;
1137
1138         set_bit(WL1271_FLAG_JOINED, &wl->flags);
1139
1140 out:
1141         return ret;
1142 }
1143
1144 static int wl1271_unjoin_channel(struct wl1271 *wl)
1145 {
1146         int ret;
1147
1148         /* to stop listening to a channel, we disconnect */
1149         ret = wl1271_cmd_disconnect(wl);
1150         if (ret < 0)
1151                 goto out;
1152
1153         clear_bit(WL1271_FLAG_JOINED, &wl->flags);
1154         wl->channel = 0;
1155         memset(wl->bssid, 0, ETH_ALEN);
1156
1157         /* stop filterting packets based on bssid */
1158         wl1271_configure_filters(wl, FIF_OTHER_BSS);
1159
1160 out:
1161         return ret;
1162 }
1163
1164 static void wl1271_set_band_rate(struct wl1271 *wl)
1165 {
1166         if (wl->band == IEEE80211_BAND_2GHZ)
1167                 wl->basic_rate_set = wl->conf.tx.basic_rate;
1168         else
1169                 wl->basic_rate_set = wl->conf.tx.basic_rate_5;
1170 }
1171
1172 static u32 wl1271_min_rate_get(struct wl1271 *wl)
1173 {
1174         int i;
1175         u32 rate = 0;
1176
1177         if (!wl->basic_rate_set) {
1178                 WARN_ON(1);
1179                 wl->basic_rate_set = wl->conf.tx.basic_rate;
1180         }
1181
1182         for (i = 0; !rate; i++) {
1183                 if ((wl->basic_rate_set >> i) & 0x1)
1184                         rate = 1 << i;
1185         }
1186
1187         return rate;
1188 }
1189
1190 static int wl1271_op_config(struct ieee80211_hw *hw, u32 changed)
1191 {
1192         struct wl1271 *wl = hw->priv;
1193         struct ieee80211_conf *conf = &hw->conf;
1194         int channel, ret = 0;
1195
1196         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
1197
1198         wl1271_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d %s",
1199                      channel,
1200                      conf->flags & IEEE80211_CONF_PS ? "on" : "off",
1201                      conf->power_level,
1202                      conf->flags & IEEE80211_CONF_IDLE ? "idle" : "in use");
1203
1204         mutex_lock(&wl->mutex);
1205
1206         if (unlikely(wl->state == WL1271_STATE_OFF))
1207                 goto out;
1208
1209         ret = wl1271_ps_elp_wakeup(wl, false);
1210         if (ret < 0)
1211                 goto out;
1212
1213         /* if the channel changes while joined, join again */
1214         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
1215                 wl->band = conf->channel->band;
1216                 wl->channel = channel;
1217
1218                 /*
1219                  * FIXME: the mac80211 should really provide a fixed rate
1220                  * to use here. for now, just use the smallest possible rate
1221                  * for the band as a fixed rate for association frames and
1222                  * other control messages.
1223                  */
1224                 if (!test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
1225                         wl1271_set_band_rate(wl);
1226
1227                 wl->basic_rate = wl1271_min_rate_get(wl);
1228                 ret = wl1271_acx_rate_policies(wl);
1229                 if (ret < 0)
1230                         wl1271_warning("rate policy for update channel "
1231                                        "failed %d", ret);
1232
1233                 if (test_bit(WL1271_FLAG_JOINED, &wl->flags)) {
1234                         ret = wl1271_cmd_join(wl, wl->set_bss_type);
1235                         if (ret < 0)
1236                                 wl1271_warning("cmd join to update channel "
1237                                                "failed %d", ret);
1238                 }
1239         }
1240
1241         if (changed & IEEE80211_CONF_CHANGE_IDLE) {
1242                 if (conf->flags & IEEE80211_CONF_IDLE &&
1243                     test_bit(WL1271_FLAG_JOINED, &wl->flags))
1244                         wl1271_unjoin_channel(wl);
1245                 else if (!(conf->flags & IEEE80211_CONF_IDLE))
1246                         wl1271_join_channel(wl, channel);
1247
1248                 if (conf->flags & IEEE80211_CONF_IDLE) {
1249                         wl->rate_set = wl1271_min_rate_get(wl);
1250                         wl->sta_rate_set = 0;
1251                         wl1271_acx_rate_policies(wl);
1252                         wl1271_acx_keep_alive_config(
1253                                 wl, CMD_TEMPL_KLV_IDX_NULL_DATA,
1254                                 ACX_KEEP_ALIVE_TPL_INVALID);
1255                         set_bit(WL1271_FLAG_IDLE, &wl->flags);
1256                 } else
1257                         clear_bit(WL1271_FLAG_IDLE, &wl->flags);
1258         }
1259
1260         if (conf->flags & IEEE80211_CONF_PS &&
1261             !test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags)) {
1262                 set_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags);
1263
1264                 /*
1265                  * We enter PSM only if we're already associated.
1266                  * If we're not, we'll enter it when joining an SSID,
1267                  * through the bss_info_changed() hook.
1268                  */
1269                 if (test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags)) {
1270                         wl1271_debug(DEBUG_PSM, "psm enabled");
1271                         ret = wl1271_ps_set_mode(wl, STATION_POWER_SAVE_MODE,
1272                                                  true);
1273                 }
1274         } else if (!(conf->flags & IEEE80211_CONF_PS) &&
1275                    test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags)) {
1276                 wl1271_debug(DEBUG_PSM, "psm disabled");
1277
1278                 clear_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags);
1279
1280                 if (test_bit(WL1271_FLAG_PSM, &wl->flags))
1281                         ret = wl1271_ps_set_mode(wl, STATION_ACTIVE_MODE,
1282                                                  true);
1283         }
1284
1285         if (conf->power_level != wl->power_level) {
1286                 ret = wl1271_acx_tx_power(wl, conf->power_level);
1287                 if (ret < 0)
1288                         goto out_sleep;
1289
1290                 wl->power_level = conf->power_level;
1291         }
1292
1293 out_sleep:
1294         wl1271_ps_elp_sleep(wl);
1295
1296 out:
1297         mutex_unlock(&wl->mutex);
1298
1299         return ret;
1300 }
1301
1302 struct wl1271_filter_params {
1303         bool enabled;
1304         int mc_list_length;
1305         u8 mc_list[ACX_MC_ADDRESS_GROUP_MAX][ETH_ALEN];
1306 };
1307
1308 static u64 wl1271_op_prepare_multicast(struct ieee80211_hw *hw,
1309                                        struct netdev_hw_addr_list *mc_list)
1310 {
1311         struct wl1271_filter_params *fp;
1312         struct netdev_hw_addr *ha;
1313         struct wl1271 *wl = hw->priv;
1314
1315         if (unlikely(wl->state == WL1271_STATE_OFF))
1316                 return 0;
1317
1318         fp = kzalloc(sizeof(*fp), GFP_ATOMIC);
1319         if (!fp) {
1320                 wl1271_error("Out of memory setting filters.");
1321                 return 0;
1322         }
1323
1324         /* update multicast filtering parameters */
1325         fp->mc_list_length = 0;
1326         if (netdev_hw_addr_list_count(mc_list) > ACX_MC_ADDRESS_GROUP_MAX) {
1327                 fp->enabled = false;
1328         } else {
1329                 fp->enabled = true;
1330                 netdev_hw_addr_list_for_each(ha, mc_list) {
1331                         memcpy(fp->mc_list[fp->mc_list_length],
1332                                         ha->addr, ETH_ALEN);
1333                         fp->mc_list_length++;
1334                 }
1335         }
1336
1337         return (u64)(unsigned long)fp;
1338 }
1339
1340 #define WL1271_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
1341                                   FIF_ALLMULTI | \
1342                                   FIF_FCSFAIL | \
1343                                   FIF_BCN_PRBRESP_PROMISC | \
1344                                   FIF_CONTROL | \
1345                                   FIF_OTHER_BSS)
1346
1347 static void wl1271_op_configure_filter(struct ieee80211_hw *hw,
1348                                        unsigned int changed,
1349                                        unsigned int *total, u64 multicast)
1350 {
1351         struct wl1271_filter_params *fp = (void *)(unsigned long)multicast;
1352         struct wl1271 *wl = hw->priv;
1353         int ret;
1354
1355         wl1271_debug(DEBUG_MAC80211, "mac80211 configure filter");
1356
1357         mutex_lock(&wl->mutex);
1358
1359         *total &= WL1271_SUPPORTED_FILTERS;
1360         changed &= WL1271_SUPPORTED_FILTERS;
1361
1362         if (unlikely(wl->state == WL1271_STATE_OFF))
1363                 goto out;
1364
1365         ret = wl1271_ps_elp_wakeup(wl, false);
1366         if (ret < 0)
1367                 goto out;
1368
1369
1370         if (*total & FIF_ALLMULTI)
1371                 ret = wl1271_acx_group_address_tbl(wl, false, NULL, 0);
1372         else if (fp)
1373                 ret = wl1271_acx_group_address_tbl(wl, fp->enabled,
1374                                                    fp->mc_list,
1375                                                    fp->mc_list_length);
1376         if (ret < 0)
1377                 goto out_sleep;
1378
1379         /* determine, whether supported filter values have changed */
1380         if (changed == 0)
1381                 goto out_sleep;
1382
1383         /* configure filters */
1384         wl->filters = *total;
1385         wl1271_configure_filters(wl, 0);
1386
1387         /* apply configured filters */
1388         ret = wl1271_acx_rx_config(wl, wl->rx_config, wl->rx_filter);
1389         if (ret < 0)
1390                 goto out_sleep;
1391
1392 out_sleep:
1393         wl1271_ps_elp_sleep(wl);
1394
1395 out:
1396         mutex_unlock(&wl->mutex);
1397         kfree(fp);
1398 }
1399
1400 static int wl1271_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
1401                              struct ieee80211_vif *vif,
1402                              struct ieee80211_sta *sta,
1403                              struct ieee80211_key_conf *key_conf)
1404 {
1405         struct wl1271 *wl = hw->priv;
1406         const u8 *addr;
1407         int ret;
1408         u32 tx_seq_32 = 0;
1409         u16 tx_seq_16 = 0;
1410         u8 key_type;
1411
1412         static const u8 bcast_addr[ETH_ALEN] =
1413                 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
1414
1415         wl1271_debug(DEBUG_MAC80211, "mac80211 set key");
1416
1417         addr = sta ? sta->addr : bcast_addr;
1418
1419         wl1271_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
1420         wl1271_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
1421         wl1271_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
1422                      key_conf->alg, key_conf->keyidx,
1423                      key_conf->keylen, key_conf->flags);
1424         wl1271_dump(DEBUG_CRYPT, "KEY: ", key_conf->key, key_conf->keylen);
1425
1426         if (is_zero_ether_addr(addr)) {
1427                 /* We dont support TX only encryption */
1428                 ret = -EOPNOTSUPP;
1429                 goto out;
1430         }
1431
1432         mutex_lock(&wl->mutex);
1433
1434         ret = wl1271_ps_elp_wakeup(wl, false);
1435         if (ret < 0)
1436                 goto out_unlock;
1437
1438         switch (key_conf->alg) {
1439         case ALG_WEP:
1440                 key_type = KEY_WEP;
1441
1442                 key_conf->hw_key_idx = key_conf->keyidx;
1443                 break;
1444         case ALG_TKIP:
1445                 key_type = KEY_TKIP;
1446
1447                 key_conf->hw_key_idx = key_conf->keyidx;
1448                 tx_seq_32 = WL1271_TX_SECURITY_HI32(wl->tx_security_seq);
1449                 tx_seq_16 = WL1271_TX_SECURITY_LO16(wl->tx_security_seq);
1450                 break;
1451         case ALG_CCMP:
1452                 key_type = KEY_AES;
1453
1454                 key_conf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1455                 tx_seq_32 = WL1271_TX_SECURITY_HI32(wl->tx_security_seq);
1456                 tx_seq_16 = WL1271_TX_SECURITY_LO16(wl->tx_security_seq);
1457                 break;
1458         default:
1459                 wl1271_error("Unknown key algo 0x%x", key_conf->alg);
1460
1461                 ret = -EOPNOTSUPP;
1462                 goto out_sleep;
1463         }
1464
1465         switch (cmd) {
1466         case SET_KEY:
1467                 ret = wl1271_cmd_set_key(wl, KEY_ADD_OR_REPLACE,
1468                                          key_conf->keyidx, key_type,
1469                                          key_conf->keylen, key_conf->key,
1470                                          addr, tx_seq_32, tx_seq_16);
1471                 if (ret < 0) {
1472                         wl1271_error("Could not add or replace key");
1473                         goto out_sleep;
1474                 }
1475
1476                 /* the default WEP key needs to be configured at least once */
1477                 if (key_type == KEY_WEP) {
1478                         ret = wl1271_cmd_set_default_wep_key(wl,
1479                                                              wl->default_key);
1480                         if (ret < 0)
1481                                 goto out_sleep;
1482                 }
1483                 break;
1484
1485         case DISABLE_KEY:
1486                 /* The wl1271 does not allow to remove unicast keys - they
1487                    will be cleared automatically on next CMD_JOIN. Ignore the
1488                    request silently, as we dont want the mac80211 to emit
1489                    an error message. */
1490                 if (!is_broadcast_ether_addr(addr))
1491                         break;
1492
1493                 ret = wl1271_cmd_set_key(wl, KEY_REMOVE,
1494                                          key_conf->keyidx, key_type,
1495                                          key_conf->keylen, key_conf->key,
1496                                          addr, 0, 0);
1497                 if (ret < 0) {
1498                         wl1271_error("Could not remove key");
1499                         goto out_sleep;
1500                 }
1501                 break;
1502
1503         default:
1504                 wl1271_error("Unsupported key cmd 0x%x", cmd);
1505                 ret = -EOPNOTSUPP;
1506                 goto out_sleep;
1507
1508                 break;
1509         }
1510
1511 out_sleep:
1512         wl1271_ps_elp_sleep(wl);
1513
1514 out_unlock:
1515         mutex_unlock(&wl->mutex);
1516
1517 out:
1518         return ret;
1519 }
1520
1521 static int wl1271_op_hw_scan(struct ieee80211_hw *hw,
1522                              struct cfg80211_scan_request *req)
1523 {
1524         struct wl1271 *wl = hw->priv;
1525         int ret;
1526         u8 *ssid = NULL;
1527         size_t len = 0;
1528
1529         wl1271_debug(DEBUG_MAC80211, "mac80211 hw scan");
1530
1531         if (req->n_ssids) {
1532                 ssid = req->ssids[0].ssid;
1533                 len = req->ssids[0].ssid_len;
1534         }
1535
1536         mutex_lock(&wl->mutex);
1537
1538         ret = wl1271_ps_elp_wakeup(wl, false);
1539         if (ret < 0)
1540                 goto out;
1541
1542         if (wl1271_11a_enabled())
1543                 ret = wl1271_cmd_scan(hw->priv, ssid, len,
1544                                       req->ie, req->ie_len, 1, 0,
1545                                       WL1271_SCAN_BAND_DUAL, 3);
1546         else
1547                 ret = wl1271_cmd_scan(hw->priv, ssid, len,
1548                                       req->ie, req->ie_len, 1, 0,
1549                                       WL1271_SCAN_BAND_2_4_GHZ, 3);
1550
1551         wl1271_ps_elp_sleep(wl);
1552
1553 out:
1554         mutex_unlock(&wl->mutex);
1555
1556         return ret;
1557 }
1558
1559 static int wl1271_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1560 {
1561         struct wl1271 *wl = hw->priv;
1562         int ret = 0;
1563
1564         mutex_lock(&wl->mutex);
1565
1566         if (unlikely(wl->state == WL1271_STATE_OFF))
1567                 goto out;
1568
1569         ret = wl1271_ps_elp_wakeup(wl, false);
1570         if (ret < 0)
1571                 goto out;
1572
1573         ret = wl1271_acx_rts_threshold(wl, (u16) value);
1574         if (ret < 0)
1575                 wl1271_warning("wl1271_op_set_rts_threshold failed: %d", ret);
1576
1577         wl1271_ps_elp_sleep(wl);
1578
1579 out:
1580         mutex_unlock(&wl->mutex);
1581
1582         return ret;
1583 }
1584
1585 static void wl1271_ssid_set(struct wl1271 *wl, struct sk_buff *beacon)
1586 {
1587         u8 *ptr = beacon->data +
1588                 offsetof(struct ieee80211_mgmt, u.beacon.variable);
1589
1590         /* find the location of the ssid in the beacon */
1591         while (ptr < beacon->data + beacon->len) {
1592                 if (ptr[0] == WLAN_EID_SSID) {
1593                         wl->ssid_len = ptr[1];
1594                         memcpy(wl->ssid, ptr+2, wl->ssid_len);
1595                         return;
1596                 }
1597                 ptr += ptr[1];
1598         }
1599         wl1271_error("ad-hoc beacon template has no SSID!\n");
1600 }
1601
1602 static void wl1271_op_bss_info_changed(struct ieee80211_hw *hw,
1603                                        struct ieee80211_vif *vif,
1604                                        struct ieee80211_bss_conf *bss_conf,
1605                                        u32 changed)
1606 {
1607         enum wl1271_cmd_ps_mode mode;
1608         struct wl1271 *wl = hw->priv;
1609         bool do_join = false;
1610         bool do_keepalive = false;
1611         int ret;
1612
1613         wl1271_debug(DEBUG_MAC80211, "mac80211 bss info changed");
1614
1615         mutex_lock(&wl->mutex);
1616
1617         ret = wl1271_ps_elp_wakeup(wl, false);
1618         if (ret < 0)
1619                 goto out;
1620
1621         if ((changed && BSS_CHANGED_BEACON_INT) &&
1622             (wl->bss_type == BSS_TYPE_IBSS)) {
1623                 wl1271_debug(DEBUG_ADHOC, "ad-hoc beacon interval updated: %d",
1624                         bss_conf->beacon_int);
1625
1626                 wl->beacon_int = bss_conf->beacon_int;
1627                 do_join = true;
1628         }
1629
1630         if ((changed && BSS_CHANGED_BEACON) &&
1631             (wl->bss_type == BSS_TYPE_IBSS)) {
1632                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
1633
1634                 wl1271_debug(DEBUG_ADHOC, "ad-hoc beacon updated");
1635
1636                 if (beacon) {
1637                         struct ieee80211_hdr *hdr;
1638
1639                         wl1271_ssid_set(wl, beacon);
1640                         ret = wl1271_cmd_template_set(wl, CMD_TEMPL_BEACON,
1641                                                       beacon->data,
1642                                                       beacon->len, 0,
1643                                                       wl1271_min_rate_get(wl));
1644
1645                         if (ret < 0) {
1646                                 dev_kfree_skb(beacon);
1647                                 goto out_sleep;
1648                         }
1649
1650                         hdr = (struct ieee80211_hdr *) beacon->data;
1651                         hdr->frame_control = cpu_to_le16(
1652                                 IEEE80211_FTYPE_MGMT |
1653                                 IEEE80211_STYPE_PROBE_RESP);
1654
1655                         ret = wl1271_cmd_template_set(wl,
1656                                                       CMD_TEMPL_PROBE_RESPONSE,
1657                                                       beacon->data,
1658                                                       beacon->len, 0,
1659                                                       wl1271_min_rate_get(wl));
1660                         dev_kfree_skb(beacon);
1661                         if (ret < 0)
1662                                 goto out_sleep;
1663
1664                         /* Need to update the SSID (for filtering etc) */
1665                         do_join = true;
1666                 }
1667         }
1668
1669         if ((changed & BSS_CHANGED_BEACON_ENABLED) &&
1670             (wl->bss_type == BSS_TYPE_IBSS)) {
1671                 wl1271_debug(DEBUG_ADHOC, "ad-hoc beaconing: %s",
1672                              bss_conf->enable_beacon ? "enabled" : "disabled");
1673
1674                 if (bss_conf->enable_beacon)
1675                         wl->set_bss_type = BSS_TYPE_IBSS;
1676                 else
1677                         wl->set_bss_type = BSS_TYPE_STA_BSS;
1678                 do_join = true;
1679         }
1680
1681         if (changed & BSS_CHANGED_CQM) {
1682                 bool enable = false;
1683                 if (bss_conf->cqm_rssi_thold)
1684                         enable = true;
1685                 ret = wl1271_acx_rssi_snr_trigger(wl, enable,
1686                                                   bss_conf->cqm_rssi_thold,
1687                                                   bss_conf->cqm_rssi_hyst);
1688                 if (ret < 0)
1689                         goto out;
1690                 wl->rssi_thold = bss_conf->cqm_rssi_thold;
1691         }
1692
1693         if ((changed & BSS_CHANGED_BSSID) &&
1694             /*
1695              * Now we know the correct bssid, so we send a new join command
1696              * and enable the BSSID filter
1697              */
1698             memcmp(wl->bssid, bss_conf->bssid, ETH_ALEN)) {
1699                         memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
1700
1701                         ret = wl1271_cmd_build_null_data(wl);
1702                         if (ret < 0)
1703                                 goto out_sleep;
1704
1705                         /* filter out all packets not from this BSSID */
1706                         wl1271_configure_filters(wl, 0);
1707
1708                         /* Need to update the BSSID (for filtering etc) */
1709                         do_join = true;
1710         }
1711
1712         if (changed & BSS_CHANGED_ASSOC) {
1713                 if (bss_conf->assoc) {
1714                         u32 rates;
1715                         wl->aid = bss_conf->aid;
1716                         set_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags);
1717
1718                         /*
1719                          * use basic rates from AP, and determine lowest rate
1720                          * to use with control frames.
1721                          */
1722                         rates = bss_conf->basic_rates;
1723                         wl->basic_rate_set = wl1271_tx_enabled_rates_get(wl,
1724                                                                          rates);
1725                         wl->basic_rate = wl1271_min_rate_get(wl);
1726                         ret = wl1271_acx_rate_policies(wl);
1727                         if (ret < 0)
1728                                 goto out_sleep;
1729
1730                         /*
1731                          * with wl1271, we don't need to update the
1732                          * beacon_int and dtim_period, because the firmware
1733                          * updates it by itself when the first beacon is
1734                          * received after a join.
1735                          */
1736                         ret = wl1271_cmd_build_ps_poll(wl, wl->aid);
1737                         if (ret < 0)
1738                                 goto out_sleep;
1739
1740                         /*
1741                          * The SSID is intentionally set to NULL here - the
1742                          * firmware will set the probe request with a
1743                          * broadcast SSID regardless of what we set in the
1744                          * template.
1745                          */
1746                         ret = wl1271_cmd_build_probe_req(wl, NULL, 0,
1747                                                          NULL, 0, wl->band);
1748
1749                         /* Enable the keep-alive feature */
1750                         ret = wl1271_acx_keep_alive_mode(wl, true);
1751                         if (ret < 0)
1752                                 goto out_sleep;
1753
1754                         /*
1755                          * This is awkward. The keep-alive configs must be done
1756                          * *after* the join command, because otherwise it will
1757                          * not work, but it must only be done *once* because
1758                          * otherwise the firmware will start complaining.
1759                          */
1760                         do_keepalive = true;
1761
1762                         /* enable the connection monitoring feature */
1763                         ret = wl1271_acx_conn_monit_params(wl, true);
1764                         if (ret < 0)
1765                                 goto out_sleep;
1766
1767                         /* If we want to go in PSM but we're not there yet */
1768                         if (test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags) &&
1769                             !test_bit(WL1271_FLAG_PSM, &wl->flags)) {
1770                                 mode = STATION_POWER_SAVE_MODE;
1771                                 ret = wl1271_ps_set_mode(wl, mode, true);
1772                                 if (ret < 0)
1773                                         goto out_sleep;
1774                         }
1775                 } else {
1776                         /* use defaults when not associated */
1777                         clear_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags);
1778                         wl->aid = 0;
1779
1780                         /* revert back to minimum rates for the current band */
1781                         wl1271_set_band_rate(wl);
1782                         wl->basic_rate = wl1271_min_rate_get(wl);
1783                         ret = wl1271_acx_rate_policies(wl);
1784                         if (ret < 0)
1785                                 goto out_sleep;
1786
1787                         /* disable connection monitor features */
1788                         ret = wl1271_acx_conn_monit_params(wl, false);
1789
1790                         /* Disable the keep-alive feature */
1791                         ret = wl1271_acx_keep_alive_mode(wl, false);
1792
1793                         if (ret < 0)
1794                                 goto out_sleep;
1795                 }
1796
1797         }
1798
1799         if (changed & BSS_CHANGED_ERP_SLOT) {
1800                 if (bss_conf->use_short_slot)
1801                         ret = wl1271_acx_slot(wl, SLOT_TIME_SHORT);
1802                 else
1803                         ret = wl1271_acx_slot(wl, SLOT_TIME_LONG);
1804                 if (ret < 0) {
1805                         wl1271_warning("Set slot time failed %d", ret);
1806                         goto out_sleep;
1807                 }
1808         }
1809
1810         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1811                 if (bss_conf->use_short_preamble)
1812                         wl1271_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1813                 else
1814                         wl1271_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1815         }
1816
1817         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1818                 if (bss_conf->use_cts_prot)
1819                         ret = wl1271_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1820                 else
1821                         ret = wl1271_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1822                 if (ret < 0) {
1823                         wl1271_warning("Set ctsprotect failed %d", ret);
1824                         goto out_sleep;
1825                 }
1826         }
1827
1828         if (do_join) {
1829                 ret = wl1271_cmd_join(wl, wl->set_bss_type);
1830                 if (ret < 0) {
1831                         wl1271_warning("cmd join failed %d", ret);
1832                         goto out_sleep;
1833                 }
1834                 set_bit(WL1271_FLAG_JOINED, &wl->flags);
1835         }
1836
1837         /*
1838          * The JOIN operation shuts down the firmware keep-alive as a side
1839          * effect, and the ACX_AID will start the keep-alive as a side effect.
1840          * Hence, for non-IBSS, the ACX_AID must always happen *after* the
1841          * JOIN operation, and the template config after the ACX_AID.
1842          */
1843         if (test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags)) {
1844                 ret = wl1271_acx_aid(wl, wl->aid);
1845                 if (ret < 0)
1846                         goto out_sleep;
1847         }
1848
1849         if (do_keepalive) {
1850                 ret = wl1271_cmd_build_klv_null_data(wl);
1851                 if (ret < 0)
1852                         goto out_sleep;
1853                 ret = wl1271_acx_keep_alive_config(
1854                         wl, CMD_TEMPL_KLV_IDX_NULL_DATA,
1855                         ACX_KEEP_ALIVE_TPL_VALID);
1856                 if (ret < 0)
1857                         goto out_sleep;
1858         }
1859
1860 out_sleep:
1861         wl1271_ps_elp_sleep(wl);
1862
1863 out:
1864         mutex_unlock(&wl->mutex);
1865 }
1866
1867 static int wl1271_op_conf_tx(struct ieee80211_hw *hw, u16 queue,
1868                              const struct ieee80211_tx_queue_params *params)
1869 {
1870         struct wl1271 *wl = hw->priv;
1871         u8 ps_scheme;
1872         int ret;
1873
1874         mutex_lock(&wl->mutex);
1875
1876         wl1271_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
1877
1878         ret = wl1271_ps_elp_wakeup(wl, false);
1879         if (ret < 0)
1880                 goto out;
1881
1882         /* the txop is confed in units of 32us by the mac80211, we need us */
1883         ret = wl1271_acx_ac_cfg(wl, wl1271_tx_get_queue(queue),
1884                                 params->cw_min, params->cw_max,
1885                                 params->aifs, params->txop << 5);
1886         if (ret < 0)
1887                 goto out_sleep;
1888
1889         if (params->uapsd)
1890                 ps_scheme = CONF_PS_SCHEME_UPSD_TRIGGER;
1891         else
1892                 ps_scheme = CONF_PS_SCHEME_LEGACY;
1893
1894         ret = wl1271_acx_tid_cfg(wl, wl1271_tx_get_queue(queue),
1895                                  CONF_CHANNEL_TYPE_EDCF,
1896                                  wl1271_tx_get_queue(queue),
1897                                  ps_scheme, CONF_ACK_POLICY_LEGACY, 0, 0);
1898         if (ret < 0)
1899                 goto out_sleep;
1900
1901 out_sleep:
1902         wl1271_ps_elp_sleep(wl);
1903
1904 out:
1905         mutex_unlock(&wl->mutex);
1906
1907         return ret;
1908 }
1909
1910
1911 /* can't be const, mac80211 writes to this */
1912 static struct ieee80211_rate wl1271_rates[] = {
1913         { .bitrate = 10,
1914           .hw_value = CONF_HW_BIT_RATE_1MBPS,
1915           .hw_value_short = CONF_HW_BIT_RATE_1MBPS, },
1916         { .bitrate = 20,
1917           .hw_value = CONF_HW_BIT_RATE_2MBPS,
1918           .hw_value_short = CONF_HW_BIT_RATE_2MBPS,
1919           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1920         { .bitrate = 55,
1921           .hw_value = CONF_HW_BIT_RATE_5_5MBPS,
1922           .hw_value_short = CONF_HW_BIT_RATE_5_5MBPS,
1923           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1924         { .bitrate = 110,
1925           .hw_value = CONF_HW_BIT_RATE_11MBPS,
1926           .hw_value_short = CONF_HW_BIT_RATE_11MBPS,
1927           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1928         { .bitrate = 60,
1929           .hw_value = CONF_HW_BIT_RATE_6MBPS,
1930           .hw_value_short = CONF_HW_BIT_RATE_6MBPS, },
1931         { .bitrate = 90,
1932           .hw_value = CONF_HW_BIT_RATE_9MBPS,
1933           .hw_value_short = CONF_HW_BIT_RATE_9MBPS, },
1934         { .bitrate = 120,
1935           .hw_value = CONF_HW_BIT_RATE_12MBPS,
1936           .hw_value_short = CONF_HW_BIT_RATE_12MBPS, },
1937         { .bitrate = 180,
1938           .hw_value = CONF_HW_BIT_RATE_18MBPS,
1939           .hw_value_short = CONF_HW_BIT_RATE_18MBPS, },
1940         { .bitrate = 240,
1941           .hw_value = CONF_HW_BIT_RATE_24MBPS,
1942           .hw_value_short = CONF_HW_BIT_RATE_24MBPS, },
1943         { .bitrate = 360,
1944          .hw_value = CONF_HW_BIT_RATE_36MBPS,
1945          .hw_value_short = CONF_HW_BIT_RATE_36MBPS, },
1946         { .bitrate = 480,
1947           .hw_value = CONF_HW_BIT_RATE_48MBPS,
1948           .hw_value_short = CONF_HW_BIT_RATE_48MBPS, },
1949         { .bitrate = 540,
1950           .hw_value = CONF_HW_BIT_RATE_54MBPS,
1951           .hw_value_short = CONF_HW_BIT_RATE_54MBPS, },
1952 };
1953
1954 /* can't be const, mac80211 writes to this */
1955 static struct ieee80211_channel wl1271_channels[] = {
1956         { .hw_value = 1, .center_freq = 2412, .max_power = 25 },
1957         { .hw_value = 2, .center_freq = 2417, .max_power = 25 },
1958         { .hw_value = 3, .center_freq = 2422, .max_power = 25 },
1959         { .hw_value = 4, .center_freq = 2427, .max_power = 25 },
1960         { .hw_value = 5, .center_freq = 2432, .max_power = 25 },
1961         { .hw_value = 6, .center_freq = 2437, .max_power = 25 },
1962         { .hw_value = 7, .center_freq = 2442, .max_power = 25 },
1963         { .hw_value = 8, .center_freq = 2447, .max_power = 25 },
1964         { .hw_value = 9, .center_freq = 2452, .max_power = 25 },
1965         { .hw_value = 10, .center_freq = 2457, .max_power = 25 },
1966         { .hw_value = 11, .center_freq = 2462, .max_power = 25 },
1967         { .hw_value = 12, .center_freq = 2467, .max_power = 25 },
1968         { .hw_value = 13, .center_freq = 2472, .max_power = 25 },
1969 };
1970
1971 /* mapping to indexes for wl1271_rates */
1972 const static u8 wl1271_rate_to_idx_2ghz[] = {
1973         /* MCS rates are used only with 11n */
1974         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS7 */
1975         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS6 */
1976         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS5 */
1977         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS4 */
1978         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS3 */
1979         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS2 */
1980         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS1 */
1981         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS0 */
1982
1983         11,                            /* CONF_HW_RXTX_RATE_54   */
1984         10,                            /* CONF_HW_RXTX_RATE_48   */
1985         9,                             /* CONF_HW_RXTX_RATE_36   */
1986         8,                             /* CONF_HW_RXTX_RATE_24   */
1987
1988         /* TI-specific rate */
1989         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_22   */
1990
1991         7,                             /* CONF_HW_RXTX_RATE_18   */
1992         6,                             /* CONF_HW_RXTX_RATE_12   */
1993         3,                             /* CONF_HW_RXTX_RATE_11   */
1994         5,                             /* CONF_HW_RXTX_RATE_9    */
1995         4,                             /* CONF_HW_RXTX_RATE_6    */
1996         2,                             /* CONF_HW_RXTX_RATE_5_5  */
1997         1,                             /* CONF_HW_RXTX_RATE_2    */
1998         0                              /* CONF_HW_RXTX_RATE_1    */
1999 };
2000
2001 /* can't be const, mac80211 writes to this */
2002 static struct ieee80211_supported_band wl1271_band_2ghz = {
2003         .channels = wl1271_channels,
2004         .n_channels = ARRAY_SIZE(wl1271_channels),
2005         .bitrates = wl1271_rates,
2006         .n_bitrates = ARRAY_SIZE(wl1271_rates),
2007 };
2008
2009 /* 5 GHz data rates for WL1273 */
2010 static struct ieee80211_rate wl1271_rates_5ghz[] = {
2011         { .bitrate = 60,
2012           .hw_value = CONF_HW_BIT_RATE_6MBPS,
2013           .hw_value_short = CONF_HW_BIT_RATE_6MBPS, },
2014         { .bitrate = 90,
2015           .hw_value = CONF_HW_BIT_RATE_9MBPS,
2016           .hw_value_short = CONF_HW_BIT_RATE_9MBPS, },
2017         { .bitrate = 120,
2018           .hw_value = CONF_HW_BIT_RATE_12MBPS,
2019           .hw_value_short = CONF_HW_BIT_RATE_12MBPS, },
2020         { .bitrate = 180,
2021           .hw_value = CONF_HW_BIT_RATE_18MBPS,
2022           .hw_value_short = CONF_HW_BIT_RATE_18MBPS, },
2023         { .bitrate = 240,
2024           .hw_value = CONF_HW_BIT_RATE_24MBPS,
2025           .hw_value_short = CONF_HW_BIT_RATE_24MBPS, },
2026         { .bitrate = 360,
2027          .hw_value = CONF_HW_BIT_RATE_36MBPS,
2028          .hw_value_short = CONF_HW_BIT_RATE_36MBPS, },
2029         { .bitrate = 480,
2030           .hw_value = CONF_HW_BIT_RATE_48MBPS,
2031           .hw_value_short = CONF_HW_BIT_RATE_48MBPS, },
2032         { .bitrate = 540,
2033           .hw_value = CONF_HW_BIT_RATE_54MBPS,
2034           .hw_value_short = CONF_HW_BIT_RATE_54MBPS, },
2035 };
2036
2037 /* 5 GHz band channels for WL1273 */
2038 static struct ieee80211_channel wl1271_channels_5ghz[] = {
2039         { .hw_value = 183, .center_freq = 4915},
2040         { .hw_value = 184, .center_freq = 4920},
2041         { .hw_value = 185, .center_freq = 4925},
2042         { .hw_value = 187, .center_freq = 4935},
2043         { .hw_value = 188, .center_freq = 4940},
2044         { .hw_value = 189, .center_freq = 4945},
2045         { .hw_value = 192, .center_freq = 4960},
2046         { .hw_value = 196, .center_freq = 4980},
2047         { .hw_value = 7, .center_freq = 5035},
2048         { .hw_value = 8, .center_freq = 5040},
2049         { .hw_value = 9, .center_freq = 5045},
2050         { .hw_value = 11, .center_freq = 5055},
2051         { .hw_value = 12, .center_freq = 5060},
2052         { .hw_value = 16, .center_freq = 5080},
2053         { .hw_value = 34, .center_freq = 5170},
2054         { .hw_value = 36, .center_freq = 5180},
2055         { .hw_value = 38, .center_freq = 5190},
2056         { .hw_value = 40, .center_freq = 5200},
2057         { .hw_value = 42, .center_freq = 5210},
2058         { .hw_value = 44, .center_freq = 5220},
2059         { .hw_value = 46, .center_freq = 5230},
2060         { .hw_value = 48, .center_freq = 5240},
2061         { .hw_value = 52, .center_freq = 5260},
2062         { .hw_value = 56, .center_freq = 5280},
2063         { .hw_value = 60, .center_freq = 5300},
2064         { .hw_value = 64, .center_freq = 5320},
2065         { .hw_value = 100, .center_freq = 5500},
2066         { .hw_value = 104, .center_freq = 5520},
2067         { .hw_value = 108, .center_freq = 5540},
2068         { .hw_value = 112, .center_freq = 5560},
2069         { .hw_value = 116, .center_freq = 5580},
2070         { .hw_value = 120, .center_freq = 5600},
2071         { .hw_value = 124, .center_freq = 5620},
2072         { .hw_value = 128, .center_freq = 5640},
2073         { .hw_value = 132, .center_freq = 5660},
2074         { .hw_value = 136, .center_freq = 5680},
2075         { .hw_value = 140, .center_freq = 5700},
2076         { .hw_value = 149, .center_freq = 5745},
2077         { .hw_value = 153, .center_freq = 5765},
2078         { .hw_value = 157, .center_freq = 5785},
2079         { .hw_value = 161, .center_freq = 5805},
2080         { .hw_value = 165, .center_freq = 5825},
2081 };
2082
2083 /* mapping to indexes for wl1271_rates_5ghz */
2084 const static u8 wl1271_rate_to_idx_5ghz[] = {
2085         /* MCS rates are used only with 11n */
2086         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS7 */
2087         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS6 */
2088         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS5 */
2089         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS4 */
2090         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS3 */
2091         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS2 */
2092         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS1 */
2093         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS0 */
2094
2095         7,                             /* CONF_HW_RXTX_RATE_54   */
2096         6,                             /* CONF_HW_RXTX_RATE_48   */
2097         5,                             /* CONF_HW_RXTX_RATE_36   */
2098         4,                             /* CONF_HW_RXTX_RATE_24   */
2099
2100         /* TI-specific rate */
2101         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_22   */
2102
2103         3,                             /* CONF_HW_RXTX_RATE_18   */
2104         2,                             /* CONF_HW_RXTX_RATE_12   */
2105         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_11   */
2106         1,                             /* CONF_HW_RXTX_RATE_9    */
2107         0,                             /* CONF_HW_RXTX_RATE_6    */
2108         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_5_5  */
2109         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_2    */
2110         CONF_HW_RXTX_RATE_UNSUPPORTED  /* CONF_HW_RXTX_RATE_1    */
2111 };
2112
2113 static struct ieee80211_supported_band wl1271_band_5ghz = {
2114         .channels = wl1271_channels_5ghz,
2115         .n_channels = ARRAY_SIZE(wl1271_channels_5ghz),
2116         .bitrates = wl1271_rates_5ghz,
2117         .n_bitrates = ARRAY_SIZE(wl1271_rates_5ghz),
2118 };
2119
2120 const static u8 *wl1271_band_rate_to_idx[] = {
2121         [IEEE80211_BAND_2GHZ] = wl1271_rate_to_idx_2ghz,
2122         [IEEE80211_BAND_5GHZ] = wl1271_rate_to_idx_5ghz
2123 };
2124
2125 static const struct ieee80211_ops wl1271_ops = {
2126         .start = wl1271_op_start,
2127         .stop = wl1271_op_stop,
2128         .add_interface = wl1271_op_add_interface,
2129         .remove_interface = wl1271_op_remove_interface,
2130         .config = wl1271_op_config,
2131         .prepare_multicast = wl1271_op_prepare_multicast,
2132         .configure_filter = wl1271_op_configure_filter,
2133         .tx = wl1271_op_tx,
2134         .set_key = wl1271_op_set_key,
2135         .hw_scan = wl1271_op_hw_scan,
2136         .bss_info_changed = wl1271_op_bss_info_changed,
2137         .set_rts_threshold = wl1271_op_set_rts_threshold,
2138         .conf_tx = wl1271_op_conf_tx,
2139         CFG80211_TESTMODE_CMD(wl1271_tm_cmd)
2140 };
2141
2142
2143 u8 wl1271_rate_to_idx(struct wl1271 *wl, int rate)
2144 {
2145         u8 idx;
2146
2147         BUG_ON(wl->band >= sizeof(wl1271_band_rate_to_idx)/sizeof(u8 *));
2148
2149         if (unlikely(rate >= CONF_HW_RXTX_RATE_MAX)) {
2150                 wl1271_error("Illegal RX rate from HW: %d", rate);
2151                 return 0;
2152         }
2153
2154         idx = wl1271_band_rate_to_idx[wl->band][rate];
2155         if (unlikely(idx == CONF_HW_RXTX_RATE_UNSUPPORTED)) {
2156                 wl1271_error("Unsupported RX rate from HW: %d", rate);
2157                 return 0;
2158         }
2159
2160         return idx;
2161 }
2162
2163 static ssize_t wl1271_sysfs_show_bt_coex_state(struct device *dev,
2164                                                struct device_attribute *attr,
2165                                                char *buf)
2166 {
2167         struct wl1271 *wl = dev_get_drvdata(dev);
2168         ssize_t len;
2169
2170         /* FIXME: what's the maximum length of buf? page size?*/
2171         len = 500;
2172
2173         mutex_lock(&wl->mutex);
2174         len = snprintf(buf, len, "%d\n\n0 - off\n1 - on\n",
2175                        wl->sg_enabled);
2176         mutex_unlock(&wl->mutex);
2177
2178         return len;
2179
2180 }
2181
2182 static ssize_t wl1271_sysfs_store_bt_coex_state(struct device *dev,
2183                                                 struct device_attribute *attr,
2184                                                 const char *buf, size_t count)
2185 {
2186         struct wl1271 *wl = dev_get_drvdata(dev);
2187         unsigned long res;
2188         int ret;
2189
2190         ret = strict_strtoul(buf, 10, &res);
2191
2192         if (ret < 0) {
2193                 wl1271_warning("incorrect value written to bt_coex_mode");
2194                 return count;
2195         }
2196
2197         mutex_lock(&wl->mutex);
2198
2199         res = !!res;
2200
2201         if (res == wl->sg_enabled)
2202                 goto out;
2203
2204         wl->sg_enabled = res;
2205
2206         if (wl->state == WL1271_STATE_OFF)
2207                 goto out;
2208
2209         ret = wl1271_ps_elp_wakeup(wl, false);
2210         if (ret < 0)
2211                 goto out;
2212
2213         wl1271_acx_sg_enable(wl, wl->sg_enabled);
2214         wl1271_ps_elp_sleep(wl);
2215
2216  out:
2217         mutex_unlock(&wl->mutex);
2218         return count;
2219 }
2220
2221 static DEVICE_ATTR(bt_coex_state, S_IRUGO | S_IWUSR,
2222                    wl1271_sysfs_show_bt_coex_state,
2223                    wl1271_sysfs_store_bt_coex_state);
2224
2225 int wl1271_register_hw(struct wl1271 *wl)
2226 {
2227         int ret;
2228
2229         if (wl->mac80211_registered)
2230                 return 0;
2231
2232         SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
2233
2234         ret = ieee80211_register_hw(wl->hw);
2235         if (ret < 0) {
2236                 wl1271_error("unable to register mac80211 hw: %d", ret);
2237                 return ret;
2238         }
2239
2240         wl->mac80211_registered = true;
2241
2242         wl1271_notice("loaded");
2243
2244         return 0;
2245 }
2246 EXPORT_SYMBOL_GPL(wl1271_register_hw);
2247
2248 void wl1271_unregister_hw(struct wl1271 *wl)
2249 {
2250         ieee80211_unregister_hw(wl->hw);
2251         wl->mac80211_registered = false;
2252
2253 }
2254 EXPORT_SYMBOL_GPL(wl1271_unregister_hw);
2255
2256 int wl1271_init_ieee80211(struct wl1271 *wl)
2257 {
2258         /* The tx descriptor buffer and the TKIP space. */
2259         wl->hw->extra_tx_headroom = WL1271_TKIP_IV_SPACE +
2260                 sizeof(struct wl1271_tx_hw_descr);
2261
2262         /* unit us */
2263         /* FIXME: find a proper value */
2264         wl->hw->channel_change_time = 10000;
2265         wl->hw->max_listen_interval = wl->conf.conn.max_listen_interval;
2266
2267         wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
2268                 IEEE80211_HW_NOISE_DBM |
2269                 IEEE80211_HW_BEACON_FILTER |
2270                 IEEE80211_HW_SUPPORTS_PS |
2271                 IEEE80211_HW_SUPPORTS_UAPSD |
2272                 IEEE80211_HW_HAS_RATE_CONTROL |
2273                 IEEE80211_HW_CONNECTION_MONITOR |
2274                 IEEE80211_HW_SUPPORTS_CQM_RSSI;
2275
2276         wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2277                 BIT(NL80211_IFTYPE_ADHOC);
2278         wl->hw->wiphy->max_scan_ssids = 1;
2279         wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1271_band_2ghz;
2280
2281         if (wl1271_11a_enabled())
2282                 wl->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &wl1271_band_5ghz;
2283
2284         wl->hw->queues = 4;
2285         wl->hw->max_rates = 1;
2286
2287         SET_IEEE80211_DEV(wl->hw, wl1271_wl_to_dev(wl));
2288
2289         return 0;
2290 }
2291 EXPORT_SYMBOL_GPL(wl1271_init_ieee80211);
2292
2293 #define WL1271_DEFAULT_CHANNEL 0
2294
2295 struct ieee80211_hw *wl1271_alloc_hw(void)
2296 {
2297         struct ieee80211_hw *hw;
2298         struct platform_device *plat_dev = NULL;
2299         struct wl1271 *wl;
2300         int i, ret;
2301
2302         hw = ieee80211_alloc_hw(sizeof(*wl), &wl1271_ops);
2303         if (!hw) {
2304                 wl1271_error("could not alloc ieee80211_hw");
2305                 ret = -ENOMEM;
2306                 goto err_hw_alloc;
2307         }
2308
2309         plat_dev = kmalloc(sizeof(wl1271_device), GFP_KERNEL);
2310         if (!plat_dev) {
2311                 wl1271_error("could not allocate platform_device");
2312                 ret = -ENOMEM;
2313                 goto err_plat_alloc;
2314         }
2315
2316         memcpy(plat_dev, &wl1271_device, sizeof(wl1271_device));
2317
2318         wl = hw->priv;
2319         memset(wl, 0, sizeof(*wl));
2320
2321         INIT_LIST_HEAD(&wl->list);
2322
2323         wl->hw = hw;
2324         wl->plat_dev = plat_dev;
2325
2326         skb_queue_head_init(&wl->tx_queue);
2327
2328         INIT_DELAYED_WORK(&wl->elp_work, wl1271_elp_work);
2329         wl->channel = WL1271_DEFAULT_CHANNEL;
2330         wl->beacon_int = WL1271_DEFAULT_BEACON_INT;
2331         wl->default_key = 0;
2332         wl->rx_counter = 0;
2333         wl->rx_config = WL1271_DEFAULT_RX_CONFIG;
2334         wl->rx_filter = WL1271_DEFAULT_RX_FILTER;
2335         wl->psm_entry_retry = 0;
2336         wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
2337         wl->basic_rate_set = CONF_TX_RATE_MASK_BASIC;
2338         wl->basic_rate = CONF_TX_RATE_MASK_BASIC;
2339         wl->rate_set = CONF_TX_RATE_MASK_BASIC;
2340         wl->sta_rate_set = 0;
2341         wl->band = IEEE80211_BAND_2GHZ;
2342         wl->vif = NULL;
2343         wl->flags = 0;
2344         wl->sg_enabled = true;
2345
2346         for (i = 0; i < ACX_TX_DESCRIPTORS; i++)
2347                 wl->tx_frames[i] = NULL;
2348
2349         spin_lock_init(&wl->wl_lock);
2350
2351         wl->state = WL1271_STATE_OFF;
2352         mutex_init(&wl->mutex);
2353
2354         /* Apply default driver configuration. */
2355         wl1271_conf_init(wl);
2356
2357         wl1271_debugfs_init(wl);
2358
2359         /* Register platform device */
2360         ret = platform_device_register(wl->plat_dev);
2361         if (ret) {
2362                 wl1271_error("couldn't register platform device");
2363                 goto err_hw;
2364         }
2365         dev_set_drvdata(&wl->plat_dev->dev, wl);
2366
2367         /* Create sysfs file to control bt coex state */
2368         ret = device_create_file(&wl->plat_dev->dev, &dev_attr_bt_coex_state);
2369         if (ret < 0) {
2370                 wl1271_error("failed to create sysfs file bt_coex_state");
2371                 goto err_platform;
2372         }
2373
2374         return hw;
2375
2376 err_platform:
2377         platform_device_unregister(wl->plat_dev);
2378
2379 err_hw:
2380         wl1271_debugfs_exit(wl);
2381         kfree(plat_dev);
2382
2383 err_plat_alloc:
2384         ieee80211_free_hw(hw);
2385
2386 err_hw_alloc:
2387
2388         return ERR_PTR(ret);
2389 }
2390 EXPORT_SYMBOL_GPL(wl1271_alloc_hw);
2391
2392 int wl1271_free_hw(struct wl1271 *wl)
2393 {
2394         platform_device_unregister(wl->plat_dev);
2395         kfree(wl->plat_dev);
2396
2397         wl1271_debugfs_exit(wl);
2398
2399         vfree(wl->fw);
2400         wl->fw = NULL;
2401         kfree(wl->nvs);
2402         wl->nvs = NULL;
2403
2404         kfree(wl->fw_status);
2405         kfree(wl->tx_res_if);
2406
2407         ieee80211_free_hw(wl->hw);
2408
2409         return 0;
2410 }
2411 EXPORT_SYMBOL_GPL(wl1271_free_hw);
2412
2413 MODULE_LICENSE("GPL");
2414 MODULE_AUTHOR("Luciano Coelho <luciano.coelho@nokia.com>");
2415 MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");