drivers/net/wireless/wl12xx/wl1271_main.c

   1 /*
   2  * This file is part of wl1271
   3  *
   4  * Copyright (C) 2008-2010 Nokia Corporation
   5  *
   6  * Contact: Luciano Coelho <luciano.coelho@nokia.com>
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License
  10  * version 2 as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  20  * 02110-1301 USA
  21  *
  22  */
  23
  24 #include <linux/module.h>
  25 #include <linux/firmware.h>
  26 #include <linux/delay.h>
  27 #include <linux/spi/spi.h>
  28 #include <linux/crc32.h>
  29 #include <linux/etherdevice.h>
  30 #include <linux/vmalloc.h>
  31 #include <linux/inetdevice.h>
  32 #include <linux/platform_device.h>
  33 #include <linux/slab.h>
  34
  35 #include "wl1271.h"
  36 #include "wl12xx_80211.h"
  37 #include "wl1271_reg.h"
  38 #include "wl1271_io.h"
  39 #include "wl1271_event.h"
  40 #include "wl1271_tx.h"
  41 #include "wl1271_rx.h"
  42 #include "wl1271_ps.h"
  43 #include "wl1271_init.h"
  44 #include "wl1271_debugfs.h"
  45 #include "wl1271_cmd.h"
  46 #include "wl1271_boot.h"
  47 #include "wl1271_testmode.h"
  48
  49 #define WL1271_BOOT_RETRIES 3
  50
  51 static struct conf_drv_settings default_conf = {
  52         .sg = {
  53                 .params = {
  54                         [CONF_SG_BT_PER_THRESHOLD]                  = 7500,
  55                         [CONF_SG_HV3_MAX_OVERRIDE]                  = 0,
  56                         [CONF_SG_BT_NFS_SAMPLE_INTERVAL]            = 400,
  57                         [CONF_SG_BT_LOAD_RATIO]                     = 50,
  58                         [CONF_SG_AUTO_PS_MODE]                      = 0,
  59                         [CONF_SG_AUTO_SCAN_PROBE_REQ]               = 170,
  60                         [CONF_SG_ACTIVE_SCAN_DURATION_FACTOR_HV3]   = 50,
  61                         [CONF_SG_ANTENNA_CONFIGURATION]             = 0,
  62                         [CONF_SG_BEACON_MISS_PERCENT]               = 60,
  63                         [CONF_SG_RATE_ADAPT_THRESH]                 = 12,
  64                         [CONF_SG_RATE_ADAPT_SNR]                    = 0,
  65                         [CONF_SG_WLAN_PS_BT_ACL_MASTER_MIN_BR]      = 10,
  66                         [CONF_SG_WLAN_PS_BT_ACL_MASTER_MAX_BR]      = 30,
  67                         [CONF_SG_WLAN_PS_MAX_BT_ACL_MASTER_BR]      = 8,
  68                         [CONF_SG_WLAN_PS_BT_ACL_SLAVE_MIN_BR]       = 20,
  69                         [CONF_SG_WLAN_PS_BT_ACL_SLAVE_MAX_BR]       = 50,
  70                         /* Note: with UPSD, this should be 4 */
  71                         [CONF_SG_WLAN_PS_MAX_BT_ACL_SLAVE_BR]       = 8,
  72                         [CONF_SG_WLAN_PS_BT_ACL_MASTER_MIN_EDR]     = 7,
  73                         [CONF_SG_WLAN_PS_BT_ACL_MASTER_MAX_EDR]     = 25,
  74                         [CONF_SG_WLAN_PS_MAX_BT_ACL_MASTER_EDR]     = 20,
  75                         /* Note: with UPDS, this should be 15 */
  76                         [CONF_SG_WLAN_PS_BT_ACL_SLAVE_MIN_EDR]      = 8,
  77                         /* Note: with UPDS, this should be 50 */
  78                         [CONF_SG_WLAN_PS_BT_ACL_SLAVE_MAX_EDR]      = 40,
  79                         /* Note: with UPDS, this should be 10 */
  80                         [CONF_SG_WLAN_PS_MAX_BT_ACL_SLAVE_EDR]      = 20,
  81                         [CONF_SG_RXT]                               = 1200,
  82                         [CONF_SG_TXT]                               = 1000,
  83                         [CONF_SG_ADAPTIVE_RXT_TXT]                  = 1,
  84                         [CONF_SG_PS_POLL_TIMEOUT]                   = 10,
  85                         [CONF_SG_UPSD_TIMEOUT]                      = 10,
  86                         [CONF_SG_WLAN_ACTIVE_BT_ACL_MASTER_MIN_EDR] = 7,
  87                         [CONF_SG_WLAN_ACTIVE_BT_ACL_MASTER_MAX_EDR] = 15,
  88                         [CONF_SG_WLAN_ACTIVE_MAX_BT_ACL_MASTER_EDR] = 15,
  89                         [CONF_SG_WLAN_ACTIVE_BT_ACL_SLAVE_MIN_EDR]  = 8,
  90                         [CONF_SG_WLAN_ACTIVE_BT_ACL_SLAVE_MAX_EDR]  = 20,
  91                         [CONF_SG_WLAN_ACTIVE_MAX_BT_ACL_SLAVE_EDR]  = 15,
  92                         [CONF_SG_WLAN_ACTIVE_BT_ACL_MIN_BR]         = 20,
  93                         [CONF_SG_WLAN_ACTIVE_BT_ACL_MAX_BR]         = 50,
  94                         [CONF_SG_WLAN_ACTIVE_MAX_BT_ACL_BR]         = 10,
  95                         [CONF_SG_PASSIVE_SCAN_DURATION_FACTOR_HV3]  = 200,
  96                         [CONF_SG_PASSIVE_SCAN_DURATION_FACTOR_A2DP] = 800,
  97                         [CONF_SG_PASSIVE_SCAN_A2DP_BT_TIME]         = 75,
  98                         [CONF_SG_PASSIVE_SCAN_A2DP_WLAN_TIME]       = 15,
  99                         [CONF_SG_HV3_MAX_SERVED]                    = 6,
 100                         [CONF_SG_DHCP_TIME]                         = 5000,
 101                         [CONF_SG_ACTIVE_SCAN_DURATION_FACTOR_A2DP]  = 100,
 102                 },
 103                 .state = CONF_SG_PROTECTIVE,
 104         },
 105         .rx = {
 106                 .rx_msdu_life_time           = 512000,
 107                 .packet_detection_threshold  = 0,
 108                 .ps_poll_timeout             = 15,
 109                 .upsd_timeout                = 15,
 110                 .rts_threshold               = 2347,
 111                 .rx_cca_threshold            = 0,
 112                 .irq_blk_threshold           = 0xFFFF,
 113                 .irq_pkt_threshold           = 0,
 114                 .irq_timeout                 = 600,
 115                 .queue_type                  = CONF_RX_QUEUE_TYPE_LOW_PRIORITY,
 116         },
 117         .tx = {
 118                 .tx_energy_detection         = 0,
 119                 .rc_conf                     = {
 120                         .enabled_rates       = 0,
 121                         .short_retry_limit   = 10,
 122                         .long_retry_limit    = 10,
 123                         .aflags              = 0
 124                 },
 125                 .ac_conf_count               = 4,
 126                 .ac_conf                     = {
 127                         [0] = {
 128                                 .ac          = CONF_TX_AC_BE,
 129                                 .cw_min      = 15,
 130                                 .cw_max      = 63,
 131                                 .aifsn       = 3,
 132                                 .tx_op_limit = 0,
 133                         },
 134                         [1] = {
 135                                 .ac          = CONF_TX_AC_BK,
 136                                 .cw_min      = 15,
 137                                 .cw_max      = 63,
 138                                 .aifsn       = 7,
 139                                 .tx_op_limit = 0,
 140                         },
 141                         [2] = {
 142                                 .ac          = CONF_TX_AC_VI,
 143                                 .cw_min      = 15,
 144                                 .cw_max      = 63,
 145                                 .aifsn       = CONF_TX_AIFS_PIFS,
 146                                 .tx_op_limit = 3008,
 147                         },
 148                         [3] = {
 149                                 .ac          = CONF_TX_AC_VO,
 150                                 .cw_min      = 15,
 151                                 .cw_max      = 63,
 152                                 .aifsn       = CONF_TX_AIFS_PIFS,
 153                                 .tx_op_limit = 1504,
 154                         },
 155                 },
 156                 .tid_conf_count = 7,
 157                 .tid_conf = {
 158                         [0] = {
 159                                 .queue_id    = 0,
 160                                 .channel_type = CONF_CHANNEL_TYPE_DCF,
 161                                 .tsid        = CONF_TX_AC_BE,
 162                                 .ps_scheme   = CONF_PS_SCHEME_LEGACY,
 163                                 .ack_policy  = CONF_ACK_POLICY_LEGACY,
 164                                 .apsd_conf   = {0, 0},
 165                         },
 166                         [1] = {
 167                                 .queue_id    = 1,
 168                                 .channel_type = CONF_CHANNEL_TYPE_DCF,
 169                                 .tsid        = CONF_TX_AC_BE,
 170                                 .ps_scheme   = CONF_PS_SCHEME_LEGACY,
 171                                 .ack_policy  = CONF_ACK_POLICY_LEGACY,
 172                                 .apsd_conf   = {0, 0},
 173                         },
 174                         [2] = {
 175                                 .queue_id    = 2,
 176                                 .channel_type = CONF_CHANNEL_TYPE_DCF,
 177                                 .tsid        = CONF_TX_AC_BE,
 178                                 .ps_scheme   = CONF_PS_SCHEME_LEGACY,
 179                                 .ack_policy  = CONF_ACK_POLICY_LEGACY,
 180                                 .apsd_conf   = {0, 0},
 181                         },
 182                         [3] = {
 183                                 .queue_id    = 3,
 184                                 .channel_type = CONF_CHANNEL_TYPE_DCF,
 185                                 .tsid        = CONF_TX_AC_BE,
 186                                 .ps_scheme   = CONF_PS_SCHEME_LEGACY,
 187                                 .ack_policy  = CONF_ACK_POLICY_LEGACY,
 188                                 .apsd_conf   = {0, 0},
 189                         },
 190                         [4] = {
 191                                 .queue_id    = 4,
 192                                 .channel_type = CONF_CHANNEL_TYPE_DCF,
 193                                 .tsid        = CONF_TX_AC_BE,
 194                                 .ps_scheme   = CONF_PS_SCHEME_LEGACY,
 195                                 .ack_policy  = CONF_ACK_POLICY_LEGACY,
 196                                 .apsd_conf   = {0, 0},
 197                         },
 198                         [5] = {
 199                                 .queue_id    = 5,
 200                                 .channel_type = CONF_CHANNEL_TYPE_DCF,
 201                                 .tsid        = CONF_TX_AC_BE,
 202                                 .ps_scheme   = CONF_PS_SCHEME_LEGACY,
 203                                 .ack_policy  = CONF_ACK_POLICY_LEGACY,
 204                                 .apsd_conf   = {0, 0},
 205                         },
 206                         [6] = {
 207                                 .queue_id    = 6,
 208                                 .channel_type = CONF_CHANNEL_TYPE_DCF,
 209                                 .tsid        = CONF_TX_AC_BE,
 210                                 .ps_scheme   = CONF_PS_SCHEME_LEGACY,
 211                                 .ack_policy  = CONF_ACK_POLICY_LEGACY,
 212                                 .apsd_conf   = {0, 0},
 213                         }
 214                 },
 215                 .frag_threshold              = IEEE80211_MAX_FRAG_THRESHOLD,
 216                 .tx_compl_timeout            = 700,
 217                 .tx_compl_threshold          = 4,
 218                 .basic_rate                  = CONF_HW_BIT_RATE_1MBPS,
 219                 .basic_rate_5                = CONF_HW_BIT_RATE_6MBPS,
 220         },
 221         .conn = {
 222                 .wake_up_event               = CONF_WAKE_UP_EVENT_DTIM,
 223                 .listen_interval             = 1,
 224                 .bcn_filt_mode               = CONF_BCN_FILT_MODE_ENABLED,
 225                 .bcn_filt_ie_count           = 1,
 226                 .bcn_filt_ie = {
 227                         [0] = {
 228                                 .ie          = WLAN_EID_CHANNEL_SWITCH,
 229                                 .rule        = CONF_BCN_RULE_PASS_ON_APPEARANCE,
 230                         }
 231                 },
 232                 .synch_fail_thold            = 10,
 233                 .bss_lose_timeout            = 100,
 234                 .beacon_rx_timeout           = 10000,
 235                 .broadcast_timeout           = 20000,
 236                 .rx_broadcast_in_ps          = 1,
 237                 .ps_poll_threshold           = 20,
 238                 .bet_enable                  = CONF_BET_MODE_ENABLE,
 239                 .bet_max_consecutive         = 10,
 240                 .psm_entry_retries           = 3,
 241                 .keep_alive_interval         = 55000,
 242                 .max_listen_interval         = 20,
 243         },
 244         .init = {
 245                 .radioparam = {
 246                         .fem                 = 1,
 247                 }
 248         },
 249         .itrim = {
 250                 .enable = false,
 251                 .timeout = 50000,
 252         },
 253         .pm_config = {
 254                 .host_clk_settling_time = 5000,
 255                 .host_fast_wakeup_support = false
 256         },
 257         .roam_trigger = {
 258                 /* FIXME: due to firmware bug, must use value 1 for now */
 259                 .trigger_pacing               = 1,
 260                 .avg_weight_rssi_beacon       = 20,
 261                 .avg_weight_rssi_data         = 10,
 262                 .avg_weight_snr_beacon        = 20,
 263                 .avg_weight_snr_data          = 10
 264         }
 265 };
 266
 267 static void wl1271_device_release(struct device *dev)
 268 {
 269
 270 }
 271
 272 static struct platform_device wl1271_device = {
 273         .name           = "wl1271",
 274         .id             = -1,
 275
 276         /* device model insists to have a release function */
 277         .dev            = {
 278                 .release = wl1271_device_release,
 279         },
 280 };
 281
 282 static LIST_HEAD(wl_list);
 283
 284 static void wl1271_conf_init(struct wl1271 *wl)
 285 {
 286
 287         /*
 288          * This function applies the default configuration to the driver. This
 289          * function is invoked upon driver load (spi probe.)
 290          *
 291          * The configuration is stored in a run-time structure in order to
 292          * facilitate for run-time adjustment of any of the parameters. Making
 293          * changes to the configuration structure will apply the new values on
 294          * the next interface up (wl1271_op_start.)
 295          */
 296
 297         /* apply driver default configuration */
 298         memcpy(&wl->conf, &default_conf, sizeof(default_conf));
 299 }
 300
 301
 302 static int wl1271_plt_init(struct wl1271 *wl)
 303 {
 304         struct conf_tx_ac_category *conf_ac;
 305         struct conf_tx_tid *conf_tid;
 306         int ret, i;
 307
 308         ret = wl1271_cmd_general_parms(wl);
 309         if (ret < 0)
 310                 return ret;
 311
 312         ret = wl1271_cmd_radio_parms(wl);
 313         if (ret < 0)
 314                 return ret;
 315
 316         ret = wl1271_init_templates_config(wl);
 317         if (ret < 0)
 318                 return ret;
 319
 320         ret = wl1271_acx_init_mem_config(wl);
 321         if (ret < 0)
 322                 return ret;
 323
 324         /* PHY layer config */
 325         ret = wl1271_init_phy_config(wl);
 326         if (ret < 0)
 327                 goto out_free_memmap;
 328
 329         ret = wl1271_acx_dco_itrim_params(wl);
 330         if (ret < 0)
 331                 goto out_free_memmap;
 332
 333         /* Initialize connection monitoring thresholds */
 334         ret = wl1271_acx_conn_monit_params(wl, false);
 335         if (ret < 0)
 336                 goto out_free_memmap;
 337
 338         /* Bluetooth WLAN coexistence */
 339         ret = wl1271_init_pta(wl);
 340         if (ret < 0)
 341                 goto out_free_memmap;
 342
 343         /* Energy detection */
 344         ret = wl1271_init_energy_detection(wl);
 345         if (ret < 0)
 346                 goto out_free_memmap;
 347
 348         /* Default fragmentation threshold */
 349         ret = wl1271_acx_frag_threshold(wl);
 350         if (ret < 0)
 351                 goto out_free_memmap;
 352
 353         /* Default TID configuration */
 354         for (i = 0; i < wl->conf.tx.tid_conf_count; i++) {
 355                 conf_tid = &wl->conf.tx.tid_conf[i];
 356                 ret = wl1271_acx_tid_cfg(wl, conf_tid->queue_id,
 357                                          conf_tid->channel_type,
 358                                          conf_tid->tsid,
 359                                          conf_tid->ps_scheme,
 360                                          conf_tid->ack_policy,
 361                                          conf_tid->apsd_conf[0],
 362                                          conf_tid->apsd_conf[1]);
 363                 if (ret < 0)
 364                         goto out_free_memmap;
 365         }
 366
 367         /* Default AC configuration */
 368         for (i = 0; i < wl->conf.tx.ac_conf_count; i++) {
 369                 conf_ac = &wl->conf.tx.ac_conf[i];
 370                 ret = wl1271_acx_ac_cfg(wl, conf_ac->ac, conf_ac->cw_min,
 371                                         conf_ac->cw_max, conf_ac->aifsn,
 372                                         conf_ac->tx_op_limit);
 373                 if (ret < 0)
 374                         goto out_free_memmap;
 375         }
 376
 377         /* Enable data path */
 378         ret = wl1271_cmd_data_path(wl, 1);
 379         if (ret < 0)
 380                 goto out_free_memmap;
 381
 382         /* Configure for CAM power saving (ie. always active) */
 383         ret = wl1271_acx_sleep_auth(wl, WL1271_PSM_CAM);
 384         if (ret < 0)
 385                 goto out_free_memmap;
 386
 387         /* configure PM */
 388         ret = wl1271_acx_pm_config(wl);
 389         if (ret < 0)
 390                 goto out_free_memmap;
 391
 392         return 0;
 393
 394  out_free_memmap:
 395         kfree(wl->target_mem_map);
 396         wl->target_mem_map = NULL;
 397
 398         return ret;
 399 }
 400
 401 static void wl1271_fw_status(struct wl1271 *wl,
 402                              struct wl1271_fw_status *status)
 403 {
 404         struct timespec ts;
 405         u32 total = 0;
 406         int i;
 407
 408         wl1271_raw_read(wl, FW_STATUS_ADDR, status, sizeof(*status), false);
 409
 410         wl1271_debug(DEBUG_IRQ, "intr: 0x%x (fw_rx_counter = %d, "
 411                      "drv_rx_counter = %d, tx_results_counter = %d)",
 412                      status->intr,
 413                      status->fw_rx_counter,
 414                      status->drv_rx_counter,
 415                      status->tx_results_counter);
 416
 417         /* update number of available TX blocks */
 418         for (i = 0; i < NUM_TX_QUEUES; i++) {
 419                 u32 cnt = le32_to_cpu(status->tx_released_blks[i]) -
 420                         wl->tx_blocks_freed[i];
 421
 422                 wl->tx_blocks_freed[i] =
 423                         le32_to_cpu(status->tx_released_blks[i]);
 424                 wl->tx_blocks_available += cnt;
 425                 total += cnt;
 426         }
 427
 428         /* if more blocks are available now, schedule some tx work */
 429         if (total && !skb_queue_empty(&wl->tx_queue))
 430                 ieee80211_queue_work(wl->hw, &wl->tx_work);
 431
 432         /* update the host-chipset time offset */
 433         getnstimeofday(&ts);
 434         wl->time_offset = (timespec_to_ns(&ts) >> 10) -
 435                 (s64)le32_to_cpu(status->fw_localtime);
 436 }
 437
 438 #define WL1271_IRQ_MAX_LOOPS 10
 439
 440 static void wl1271_irq_work(struct work_struct *work)
 441 {
 442         int ret;
 443         u32 intr;
 444         int loopcount = WL1271_IRQ_MAX_LOOPS;
 445         unsigned long flags;
 446         struct wl1271 *wl =
 447                 container_of(work, struct wl1271, irq_work);
 448
 449         mutex_lock(&wl->mutex);
 450
 451         wl1271_debug(DEBUG_IRQ, "IRQ work");
 452
 453         if (unlikely(wl->state == WL1271_STATE_OFF))
 454                 goto out;
 455
 456         ret = wl1271_ps_elp_wakeup(wl, true);
 457         if (ret < 0)
 458                 goto out;
 459
 460         spin_lock_irqsave(&wl->wl_lock, flags);
 461         while (test_bit(WL1271_FLAG_IRQ_PENDING, &wl->flags) && loopcount) {
 462                 clear_bit(WL1271_FLAG_IRQ_PENDING, &wl->flags);
 463                 spin_unlock_irqrestore(&wl->wl_lock, flags);
 464                 loopcount--;
 465
 466                 wl1271_fw_status(wl, wl->fw_status);
 467                 intr = le32_to_cpu(wl->fw_status->intr);
 468                 if (!intr) {
 469                         wl1271_debug(DEBUG_IRQ, "Zero interrupt received.");
 470                         continue;
 471                 }
 472
 473                 intr &= WL1271_INTR_MASK;
 474
 475                 if (intr & WL1271_ACX_INTR_DATA) {
 476                         wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_DATA");
 477
 478                         /* check for tx results */
 479                         if (wl->fw_status->tx_results_counter !=
 480                             (wl->tx_results_count & 0xff))
 481                                 wl1271_tx_complete(wl);
 482
 483                         wl1271_rx(wl, wl->fw_status);
 484                 }
 485
 486                 if (intr & WL1271_ACX_INTR_EVENT_A) {
 487                         wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_EVENT_A");
 488                         wl1271_event_handle(wl, 0);
 489                 }
 490
 491                 if (intr & WL1271_ACX_INTR_EVENT_B) {
 492                         wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_EVENT_B");
 493                         wl1271_event_handle(wl, 1);
 494                 }
 495
 496                 if (intr & WL1271_ACX_INTR_INIT_COMPLETE)
 497                         wl1271_debug(DEBUG_IRQ,
 498                                      "WL1271_ACX_INTR_INIT_COMPLETE");
 499
 500                 if (intr & WL1271_ACX_INTR_HW_AVAILABLE)
 501                         wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_HW_AVAILABLE");
 502
 503                 spin_lock_irqsave(&wl->wl_lock, flags);
 504         }
 505
 506         if (test_bit(WL1271_FLAG_IRQ_PENDING, &wl->flags))
 507                 ieee80211_queue_work(wl->hw, &wl->irq_work);
 508         else
 509                 clear_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags);
 510         spin_unlock_irqrestore(&wl->wl_lock, flags);
 511
 512         wl1271_ps_elp_sleep(wl);
 513
 514 out:
 515         mutex_unlock(&wl->mutex);
 516 }
 517
 518 static int wl1271_fetch_firmware(struct wl1271 *wl)
 519 {
 520         const struct firmware *fw;
 521         int ret;
 522
 523         ret = request_firmware(&fw, WL1271_FW_NAME, wl1271_wl_to_dev(wl));
 524
 525         if (ret < 0) {
 526                 wl1271_error("could not get firmware: %d", ret);
 527                 return ret;
 528         }
 529
 530         if (fw->size % 4) {
 531                 wl1271_error("firmware size is not multiple of 32 bits: %zu",
 532                              fw->size);
 533                 ret = -EILSEQ;
 534                 goto out;
 535         }
 536
 537         wl->fw_len = fw->size;
 538         wl->fw = vmalloc(wl->fw_len);
 539
 540         if (!wl->fw) {
 541                 wl1271_error("could not allocate memory for the firmware");
 542                 ret = -ENOMEM;
 543                 goto out;
 544         }
 545
 546         memcpy(wl->fw, fw->data, wl->fw_len);
 547
 548         ret = 0;
 549
 550 out:
 551         release_firmware(fw);
 552
 553         return ret;
 554 }
 555
 556 static int wl1271_fetch_nvs(struct wl1271 *wl)
 557 {
 558         const struct firmware *fw;
 559         int ret;
 560
 561         ret = request_firmware(&fw, WL1271_NVS_NAME, wl1271_wl_to_dev(wl));
 562
 563         if (ret < 0) {
 564                 wl1271_error("could not get nvs file: %d", ret);
 565                 return ret;
 566         }
 567
 568         if (fw->size != sizeof(struct wl1271_nvs_file)) {
 569                 wl1271_error("nvs size is not as expected: %zu != %zu",
 570                              fw->size, sizeof(struct wl1271_nvs_file));
 571                 ret = -EILSEQ;
 572                 goto out;
 573         }
 574
 575         wl->nvs = kmalloc(sizeof(struct wl1271_nvs_file), GFP_KERNEL);
 576
 577         if (!wl->nvs) {
 578                 wl1271_error("could not allocate memory for the nvs file");
 579                 ret = -ENOMEM;
 580                 goto out;
 581         }
 582
 583         memcpy(wl->nvs, fw->data, sizeof(struct wl1271_nvs_file));
 584
 585 out:
 586         release_firmware(fw);
 587
 588         return ret;
 589 }
 590
 591 static void wl1271_fw_wakeup(struct wl1271 *wl)
 592 {
 593         u32 elp_reg;
 594
 595         elp_reg = ELPCTRL_WAKE_UP;
 596         wl1271_raw_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
 597 }
 598
 599 static int wl1271_setup(struct wl1271 *wl)
 600 {
 601         wl->fw_status = kmalloc(sizeof(*wl->fw_status), GFP_KERNEL);
 602         if (!wl->fw_status)
 603                 return -ENOMEM;
 604
 605         wl->tx_res_if = kmalloc(sizeof(*wl->tx_res_if), GFP_KERNEL);
 606         if (!wl->tx_res_if) {
 607                 kfree(wl->fw_status);
 608                 return -ENOMEM;
 609         }
 610
 611         INIT_WORK(&wl->irq_work, wl1271_irq_work);
 612         INIT_WORK(&wl->tx_work, wl1271_tx_work);
 613         return 0;
 614 }
 615
 616 static int wl1271_chip_wakeup(struct wl1271 *wl)
 617 {
 618         struct wl1271_partition_set partition;
 619         int ret = 0;
 620
 621         msleep(WL1271_PRE_POWER_ON_SLEEP);
 622         wl1271_power_on(wl);
 623         msleep(WL1271_POWER_ON_SLEEP);
 624         wl1271_io_reset(wl);
 625         wl1271_io_init(wl);
 626
 627         /* We don't need a real memory partition here, because we only want
 628          * to use the registers at this point. */
 629         memset(&partition, 0, sizeof(partition));
 630         partition.reg.start = REGISTERS_BASE;
 631         partition.reg.size = REGISTERS_DOWN_SIZE;
 632         wl1271_set_partition(wl, &partition);
 633
 634         /* ELP module wake up */
 635         wl1271_fw_wakeup(wl);
 636
 637         /* whal_FwCtrl_BootSm() */
 638
 639         /* 0. read chip id from CHIP_ID */
 640         wl->chip.id = wl1271_read32(wl, CHIP_ID_B);
 641
 642         /* 1. check if chip id is valid */
 643
 644         switch (wl->chip.id) {
 645         case CHIP_ID_1271_PG10:
 646                 wl1271_warning("chip id 0x%x (1271 PG10) support is obsolete",
 647                                wl->chip.id);
 648
 649                 ret = wl1271_setup(wl);
 650                 if (ret < 0)
 651                         goto out;
 652                 break;
 653         case CHIP_ID_1271_PG20:
 654                 wl1271_debug(DEBUG_BOOT, "chip id 0x%x (1271 PG20)",
 655                              wl->chip.id);
 656
 657                 ret = wl1271_setup(wl);
 658                 if (ret < 0)
 659                         goto out;
 660                 break;
 661         default:
 662                 wl1271_warning("unsupported chip id: 0x%x", wl->chip.id);
 663                 ret = -ENODEV;
 664                 goto out;
 665         }
 666
 667         if (wl->fw == NULL) {
 668                 ret = wl1271_fetch_firmware(wl);
 669                 if (ret < 0)
 670                         goto out;
 671         }
 672
 673         /* No NVS from netlink, try to get it from the filesystem */
 674         if (wl->nvs == NULL) {
 675                 ret = wl1271_fetch_nvs(wl);
 676                 if (ret < 0)
 677                         goto out;
 678         }
 679
 680 out:
 681         return ret;
 682 }
 683
 684 int wl1271_plt_start(struct wl1271 *wl)
 685 {
 686         int retries = WL1271_BOOT_RETRIES;
 687         int ret;
 688
 689         mutex_lock(&wl->mutex);
 690
 691         wl1271_notice("power up");
 692
 693         if (wl->state != WL1271_STATE_OFF) {
 694                 wl1271_error("cannot go into PLT state because not "
 695                              "in off state: %d", wl->state);
 696                 ret = -EBUSY;
 697                 goto out;
 698         }
 699
 700         while (retries) {
 701                 retries--;
 702                 ret = wl1271_chip_wakeup(wl);
 703                 if (ret < 0)
 704                         goto power_off;
 705
 706                 ret = wl1271_boot(wl);
 707                 if (ret < 0)
 708                         goto power_off;
 709
 710                 ret = wl1271_plt_init(wl);
 711                 if (ret < 0)
 712                         goto irq_disable;
 713
 714                 wl->state = WL1271_STATE_PLT;
 715                 wl1271_notice("firmware booted in PLT mode (%s)",
 716                               wl->chip.fw_ver);
 717                 goto out;
 718
 719 irq_disable:
 720                 wl1271_disable_interrupts(wl);
 721                 mutex_unlock(&wl->mutex);
 722                 /* Unlocking the mutex in the middle of handling is
 723                    inherently unsafe. In this case we deem it safe to do,
 724                    because we need to let any possibly pending IRQ out of
 725                    the system (and while we are WL1271_STATE_OFF the IRQ
 726                    work function will not do anything.) Also, any other
 727                    possible concurrent operations will fail due to the
 728                    current state, hence the wl1271 struct should be safe. */
 729                 cancel_work_sync(&wl->irq_work);
 730                 mutex_lock(&wl->mutex);
 731 power_off:
 732                 wl1271_power_off(wl);
 733         }
 734
 735         wl1271_error("firmware boot in PLT mode failed despite %d retries",
 736                      WL1271_BOOT_RETRIES);
 737 out:
 738         mutex_unlock(&wl->mutex);
 739
 740         return ret;
 741 }
 742
 743 int wl1271_plt_stop(struct wl1271 *wl)
 744 {
 745         int ret = 0;
 746
 747         mutex_lock(&wl->mutex);
 748
 749         wl1271_notice("power down");
 750
 751         if (wl->state != WL1271_STATE_PLT) {
 752                 wl1271_error("cannot power down because not in PLT "
 753                              "state: %d", wl->state);
 754                 ret = -EBUSY;
 755                 goto out;
 756         }
 757
 758         wl1271_disable_interrupts(wl);
 759         wl1271_power_off(wl);
 760
 761         wl->state = WL1271_STATE_OFF;
 762         wl->rx_counter = 0;
 763
 764 out:
 765         mutex_unlock(&wl->mutex);
 766
 767         return ret;
 768 }
 769
 770
 771 static int wl1271_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 772 {
 773         struct wl1271 *wl = hw->priv;
 774         struct ieee80211_conf *conf = &hw->conf;
 775         struct ieee80211_tx_info *txinfo = IEEE80211_SKB_CB(skb);
 776         struct ieee80211_sta *sta = txinfo->control.sta;
 777         unsigned long flags;
 778
 779         /* peek into the rates configured in the STA entry */
 780         spin_lock_irqsave(&wl->wl_lock, flags);
 781         if (sta && sta->supp_rates[conf->channel->band] != wl->sta_rate_set) {
 782                 wl->sta_rate_set = sta->supp_rates[conf->channel->band];
 783                 set_bit(WL1271_FLAG_STA_RATES_CHANGED, &wl->flags);
 784         }
 785         spin_unlock_irqrestore(&wl->wl_lock, flags);
 786
 787         /* queue the packet */
 788         skb_queue_tail(&wl->tx_queue, skb);
 789
 790         /*
 791          * The chip specific setup must run before the first TX packet -
 792          * before that, the tx_work will not be initialized!
 793          */
 794
 795         ieee80211_queue_work(wl->hw, &wl->tx_work);
 796
 797         /*
 798          * The workqueue is slow to process the tx_queue and we need stop
 799          * the queue here, otherwise the queue will get too long.
 800          */
 801         if (skb_queue_len(&wl->tx_queue) >= WL1271_TX_QUEUE_HIGH_WATERMARK) {
 802                 wl1271_debug(DEBUG_TX, "op_tx: stopping queues");
 803
 804                 spin_lock_irqsave(&wl->wl_lock, flags);
 805                 ieee80211_stop_queues(wl->hw);
 806                 set_bit(WL1271_FLAG_TX_QUEUE_STOPPED, &wl->flags);
 807                 spin_unlock_irqrestore(&wl->wl_lock, flags);
 808         }
 809
 810         return NETDEV_TX_OK;
 811 }
 812
 813 static int wl1271_dev_notify(struct notifier_block *me, unsigned long what,
 814                              void *arg)
 815 {
 816         struct net_device *dev;
 817         struct wireless_dev *wdev;
 818         struct wiphy *wiphy;
 819         struct ieee80211_hw *hw;
 820         struct wl1271 *wl;
 821         struct wl1271 *wl_temp;
 822         struct in_device *idev;
 823         struct in_ifaddr *ifa = arg;
 824         int ret = 0;
 825
 826         /* FIXME: this ugly function should probably be implemented in the
 827          * mac80211, and here should only be a simple callback handling actual
 828          * setting of the filters. Now we need to dig up references to
 829          * various structures to gain access to what we need.
 830          * Also, because of this, there is no "initial" setting of the filter
 831          * in "op_start", because we don't want to dig up struct net_device
 832          * there - the filter will be set upon first change of the interface
 833          * IP address. */
 834
 835         dev = ifa->ifa_dev->dev;
 836
 837         wdev = dev->ieee80211_ptr;
 838         if (wdev == NULL)
 839                 return NOTIFY_DONE;
 840
 841         wiphy = wdev->wiphy;
 842         if (wiphy == NULL)
 843                 return NOTIFY_DONE;
 844
 845         hw = wiphy_priv(wiphy);
 846         if (hw == NULL)
 847                 return NOTIFY_DONE;
 848
 849         /* Check that the interface is one supported by this driver. */
 850         wl_temp = hw->priv;
 851         list_for_each_entry(wl, &wl_list, list) {
 852                 if (wl == wl_temp)
 853                         break;
 854         }
 855         if (wl == NULL)
 856                 return NOTIFY_DONE;
 857
 858         /* Get the interface IP address for the device. "ifa" will become
 859            NULL if:
 860              - there is no IPV4 protocol address configured
 861              - there are multiple (virtual) IPV4 addresses configured
 862            When "ifa" is NULL, filtering will be disabled.
 863         */
 864         ifa = NULL;
 865         idev = dev->ip_ptr;
 866         if (idev)
 867                 ifa = idev->ifa_list;
 868
 869         if (ifa && ifa->ifa_next)
 870                 ifa = NULL;
 871
 872         mutex_lock(&wl->mutex);
 873
 874         if (wl->state == WL1271_STATE_OFF)
 875                 goto out;
 876
 877         ret = wl1271_ps_elp_wakeup(wl, false);
 878         if (ret < 0)
 879                 goto out;
 880         if (ifa)
 881                 ret = wl1271_acx_arp_ip_filter(wl, true,
 882                                                (u8 *)&ifa->ifa_address,
 883                                                ACX_IPV4_VERSION);
 884         else
 885                 ret = wl1271_acx_arp_ip_filter(wl, false, NULL,
 886                                                ACX_IPV4_VERSION);
 887         wl1271_ps_elp_sleep(wl);
 888
 889 out:
 890         mutex_unlock(&wl->mutex);
 891
 892         return NOTIFY_OK;
 893 }
 894
 895 static struct notifier_block wl1271_dev_notifier = {
 896         .notifier_call = wl1271_dev_notify,
 897 };
 898
 899
 900 static int wl1271_op_start(struct ieee80211_hw *hw)
 901 {
 902         wl1271_debug(DEBUG_MAC80211, "mac80211 start");
 903
 904         /*
 905          * We have to delay the booting of the hardware because
 906          * we need to know the local MAC address before downloading and
 907          * initializing the firmware. The MAC address cannot be changed
 908          * after boot, and without the proper MAC address, the firmware
 909          * will not function properly.
 910          *
 911          * The MAC address is first known when the corresponding interface
 912          * is added. That is where we will initialize the hardware.
 913          */
 914
 915         return 0;
 916 }
 917
 918 static void wl1271_op_stop(struct ieee80211_hw *hw)
 919 {
 920         wl1271_debug(DEBUG_MAC80211, "mac80211 stop");
 921 }
 922
 923 static int wl1271_op_add_interface(struct ieee80211_hw *hw,
 924                                    struct ieee80211_vif *vif)
 925 {
 926         struct wl1271 *wl = hw->priv;
 927         int retries = WL1271_BOOT_RETRIES;
 928         int ret = 0;
 929
 930         wl1271_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
 931                      vif->type, vif->addr);
 932
 933         mutex_lock(&wl->mutex);
 934         if (wl->vif) {
 935                 ret = -EBUSY;
 936                 goto out;
 937         }
 938
 939         wl->vif = vif;
 940
 941         switch (vif->type) {
 942         case NL80211_IFTYPE_STATION:
 943                 wl->bss_type = BSS_TYPE_STA_BSS;
 944                 wl->set_bss_type = BSS_TYPE_STA_BSS;
 945                 break;
 946         case NL80211_IFTYPE_ADHOC:
 947                 wl->bss_type = BSS_TYPE_IBSS;
 948                 wl->set_bss_type = BSS_TYPE_STA_BSS;
 949                 break;
 950         default:
 951                 ret = -EOPNOTSUPP;
 952                 goto out;
 953         }
 954
 955         memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
 956
 957         if (wl->state != WL1271_STATE_OFF) {
 958                 wl1271_error("cannot start because not in off state: %d",
 959                              wl->state);
 960                 ret = -EBUSY;
 961                 goto out;
 962         }
 963
 964         while (retries) {
 965                 retries--;
 966                 ret = wl1271_chip_wakeup(wl);
 967                 if (ret < 0)
 968                         goto power_off;
 969
 970                 ret = wl1271_boot(wl);
 971                 if (ret < 0)
 972                         goto power_off;
 973
 974                 ret = wl1271_hw_init(wl);
 975                 if (ret < 0)
 976                         goto irq_disable;
 977
 978                 wl->state = WL1271_STATE_ON;
 979                 wl1271_info("firmware booted (%s)", wl->chip.fw_ver);
 980                 goto out;
 981
 982 irq_disable:
 983                 wl1271_disable_interrupts(wl);
 984                 mutex_unlock(&wl->mutex);
 985                 /* Unlocking the mutex in the middle of handling is
 986                    inherently unsafe. In this case we deem it safe to do,
 987                    because we need to let any possibly pending IRQ out of
 988                    the system (and while we are WL1271_STATE_OFF the IRQ
 989                    work function will not do anything.) Also, any other
 990                    possible concurrent operations will fail due to the
 991                    current state, hence the wl1271 struct should be safe. */
 992                 cancel_work_sync(&wl->irq_work);
 993                 mutex_lock(&wl->mutex);
 994 power_off:
 995                 wl1271_power_off(wl);
 996         }
 997
 998         wl1271_error("firmware boot failed despite %d retries",
 999                      WL1271_BOOT_RETRIES);
1000 out:
1001         mutex_unlock(&wl->mutex);
1002
1003         if (!ret) {
1004                 list_add(&wl->list, &wl_list);
1005                 register_inetaddr_notifier(&wl1271_dev_notifier);
1006         }
1007
1008         return ret;
1009 }
1010
1011 static void wl1271_op_remove_interface(struct ieee80211_hw *hw,
1012                                        struct ieee80211_vif *vif)
1013 {
1014         struct wl1271 *wl = hw->priv;
1015         int i;
1016
1017         unregister_inetaddr_notifier(&wl1271_dev_notifier);
1018
1019         mutex_lock(&wl->mutex);
1020         wl1271_debug(DEBUG_MAC80211, "mac80211 remove interface");
1021
1022         wl1271_info("down");
1023
1024         list_del(&wl->list);
1025
1026         WARN_ON(wl->state != WL1271_STATE_ON);
1027
1028         if (test_and_clear_bit(WL1271_FLAG_SCANNING, &wl->flags)) {
1029                 mutex_unlock(&wl->mutex);
1030                 ieee80211_scan_completed(wl->hw, true);
1031                 mutex_lock(&wl->mutex);
1032         }
1033
1034         wl->state = WL1271_STATE_OFF;
1035
1036         wl1271_disable_interrupts(wl);
1037
1038         mutex_unlock(&wl->mutex);
1039
1040         cancel_work_sync(&wl->irq_work);
1041         cancel_work_sync(&wl->tx_work);
1042
1043         mutex_lock(&wl->mutex);
1044
1045         /* let's notify MAC80211 about the remaining pending TX frames */
1046         wl1271_tx_flush(wl);
1047         wl1271_power_off(wl);
1048
1049         memset(wl->bssid, 0, ETH_ALEN);
1050         memset(wl->ssid, 0, IW_ESSID_MAX_SIZE + 1);
1051         wl->ssid_len = 0;
1052         wl->bss_type = MAX_BSS_TYPE;
1053         wl->set_bss_type = MAX_BSS_TYPE;
1054         wl->band = IEEE80211_BAND_2GHZ;
1055
1056         wl->rx_counter = 0;
1057         wl->psm_entry_retry = 0;
1058         wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
1059         wl->tx_blocks_available = 0;
1060         wl->tx_results_count = 0;
1061         wl->tx_packets_count = 0;
1062         wl->tx_security_last_seq = 0;
1063         wl->tx_security_seq = 0;
1064         wl->time_offset = 0;
1065         wl->session_counter = 0;
1066         wl->rate_set = CONF_TX_RATE_MASK_BASIC;
1067         wl->sta_rate_set = 0;
1068         wl->flags = 0;
1069         wl->vif = NULL;
1070         wl->filters = 0;
1071
1072         for (i = 0; i < NUM_TX_QUEUES; i++)
1073                 wl->tx_blocks_freed[i] = 0;
1074
1075         wl1271_debugfs_reset(wl);
1076
1077         kfree(wl->fw_status);
1078         wl->fw_status = NULL;
1079         kfree(wl->tx_res_if);
1080         wl->tx_res_if = NULL;
1081         kfree(wl->target_mem_map);
1082         wl->target_mem_map = NULL;
1083
1084         mutex_unlock(&wl->mutex);
1085 }
1086
1087 static void wl1271_configure_filters(struct wl1271 *wl, unsigned int filters)
1088 {
1089         wl->rx_config = WL1271_DEFAULT_RX_CONFIG;
1090         wl->rx_filter = WL1271_DEFAULT_RX_FILTER;
1091
1092         /* combine requested filters with current filter config */
1093         filters = wl->filters | filters;
1094
1095         wl1271_debug(DEBUG_FILTERS, "RX filters set: ");
1096
1097         if (filters & FIF_PROMISC_IN_BSS) {
1098                 wl1271_debug(DEBUG_FILTERS, " - FIF_PROMISC_IN_BSS");
1099                 wl->rx_config &= ~CFG_UNI_FILTER_EN;
1100                 wl->rx_config |= CFG_BSSID_FILTER_EN;
1101         }
1102         if (filters & FIF_BCN_PRBRESP_PROMISC) {
1103                 wl1271_debug(DEBUG_FILTERS, " - FIF_BCN_PRBRESP_PROMISC");
1104                 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
1105                 wl->rx_config &= ~CFG_SSID_FILTER_EN;
1106         }
1107         if (filters & FIF_OTHER_BSS) {
1108                 wl1271_debug(DEBUG_FILTERS, " - FIF_OTHER_BSS");
1109                 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
1110         }
1111         if (filters & FIF_CONTROL) {
1112                 wl1271_debug(DEBUG_FILTERS, " - FIF_CONTROL");
1113                 wl->rx_filter |= CFG_RX_CTL_EN;
1114         }
1115         if (filters & FIF_FCSFAIL) {
1116                 wl1271_debug(DEBUG_FILTERS, " - FIF_FCSFAIL");
1117                 wl->rx_filter |= CFG_RX_FCS_ERROR;
1118         }
1119 }
1120
1121 static int wl1271_dummy_join(struct wl1271 *wl)
1122 {
1123         int ret = 0;
1124         /* we need to use a dummy BSSID for now */
1125         static const u8 dummy_bssid[ETH_ALEN] = { 0x0b, 0xad, 0xde,
1126                                                   0xad, 0xbe, 0xef };
1127
1128         memcpy(wl->bssid, dummy_bssid, ETH_ALEN);
1129
1130         /* pass through frames from all BSS */
1131         wl1271_configure_filters(wl, FIF_OTHER_BSS);
1132
1133         ret = wl1271_cmd_join(wl, wl->set_bss_type);
1134         if (ret < 0)
1135                 goto out;
1136
1137         set_bit(WL1271_FLAG_JOINED, &wl->flags);
1138
1139 out:
1140         return ret;
1141 }
1142
1143 static int wl1271_join(struct wl1271 *wl, bool set_assoc)
1144 {
1145         int ret;
1146
1147         /*
1148          * One of the side effects of the JOIN command is that is clears
1149          * WPA/WPA2 keys from the chipset. Performing a JOIN while associated
1150          * to a WPA/WPA2 access point will therefore kill the data-path.
1151          * Currently there is no supported scenario for JOIN during
1152          * association - if it becomes a supported scenario, the WPA/WPA2 keys
1153          * must be handled somehow.
1154          *
1155          */
1156         if (test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
1157                 wl1271_info("JOIN while associated.");
1158
1159         if (set_assoc)
1160                 set_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags);
1161
1162         ret = wl1271_cmd_join(wl, wl->set_bss_type);
1163         if (ret < 0)
1164                 goto out;
1165
1166         set_bit(WL1271_FLAG_JOINED, &wl->flags);
1167
1168         if (!test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
1169                 goto out;
1170
1171         /*
1172          * The join command disable the keep-alive mode, shut down its process,
1173          * and also clear the template config, so we need to reset it all after
1174          * the join. The acx_aid starts the keep-alive process, and the order
1175          * of the commands below is relevant.
1176          */
1177         ret = wl1271_acx_keep_alive_mode(wl, true);
1178         if (ret < 0)
1179                 goto out;
1180
1181         ret = wl1271_acx_aid(wl, wl->aid);
1182         if (ret < 0)
1183                 goto out;
1184
1185         ret = wl1271_cmd_build_klv_null_data(wl);
1186         if (ret < 0)
1187                 goto out;
1188
1189         ret = wl1271_acx_keep_alive_config(wl, CMD_TEMPL_KLV_IDX_NULL_DATA,
1190                                            ACX_KEEP_ALIVE_TPL_VALID);
1191         if (ret < 0)
1192                 goto out;
1193
1194 out:
1195         return ret;
1196 }
1197
1198 static int wl1271_unjoin(struct wl1271 *wl)
1199 {
1200         int ret;
1201
1202         /* to stop listening to a channel, we disconnect */
1203         ret = wl1271_cmd_disconnect(wl);
1204         if (ret < 0)
1205                 goto out;
1206
1207         clear_bit(WL1271_FLAG_JOINED, &wl->flags);
1208         memset(wl->bssid, 0, ETH_ALEN);
1209
1210         /* stop filterting packets based on bssid */
1211         wl1271_configure_filters(wl, FIF_OTHER_BSS);
1212
1213 out:
1214         return ret;
1215 }
1216
1217 static void wl1271_set_band_rate(struct wl1271 *wl)
1218 {
1219         if (wl->band == IEEE80211_BAND_2GHZ)
1220                 wl->basic_rate_set = wl->conf.tx.basic_rate;
1221         else
1222                 wl->basic_rate_set = wl->conf.tx.basic_rate_5;
1223 }
1224
1225 static u32 wl1271_min_rate_get(struct wl1271 *wl)
1226 {
1227         int i;
1228         u32 rate = 0;
1229
1230         if (!wl->basic_rate_set) {
1231                 WARN_ON(1);
1232                 wl->basic_rate_set = wl->conf.tx.basic_rate;
1233         }
1234
1235         for (i = 0; !rate; i++) {
1236                 if ((wl->basic_rate_set >> i) & 0x1)
1237                         rate = 1 << i;
1238         }
1239
1240         return rate;
1241 }
1242
1243 static int wl1271_op_config(struct ieee80211_hw *hw, u32 changed)
1244 {
1245         struct wl1271 *wl = hw->priv;
1246         struct ieee80211_conf *conf = &hw->conf;
1247         int channel, ret = 0;
1248
1249         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
1250
1251         wl1271_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d %s",
1252                      channel,
1253                      conf->flags & IEEE80211_CONF_PS ? "on" : "off",
1254                      conf->power_level,
1255                      conf->flags & IEEE80211_CONF_IDLE ? "idle" : "in use");
1256
1257         mutex_lock(&wl->mutex);
1258
1259         if (unlikely(wl->state == WL1271_STATE_OFF))
1260                 goto out;
1261
1262         ret = wl1271_ps_elp_wakeup(wl, false);
1263         if (ret < 0)
1264                 goto out;
1265
1266         /* if the channel changes while joined, join again */
1267         if (changed & IEEE80211_CONF_CHANGE_CHANNEL &&
1268             ((wl->band != conf->channel->band) ||
1269              (wl->channel != channel))) {
1270                 wl->band = conf->channel->band;
1271                 wl->channel = channel;
1272
1273                 /*
1274                  * FIXME: the mac80211 should really provide a fixed rate
1275                  * to use here. for now, just use the smallest possible rate
1276                  * for the band as a fixed rate for association frames and
1277                  * other control messages.
1278                  */
1279                 if (!test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
1280                         wl1271_set_band_rate(wl);
1281
1282                 wl->basic_rate = wl1271_min_rate_get(wl);
1283                 ret = wl1271_acx_rate_policies(wl);
1284                 if (ret < 0)
1285                         wl1271_warning("rate policy for update channel "
1286                                        "failed %d", ret);
1287
1288                 if (test_bit(WL1271_FLAG_JOINED, &wl->flags)) {
1289                         ret = wl1271_join(wl, false);
1290                         if (ret < 0)
1291                                 wl1271_warning("cmd join to update channel "
1292                                                "failed %d", ret);
1293                 }
1294         }
1295
1296         if (changed & IEEE80211_CONF_CHANGE_IDLE) {
1297                 if (conf->flags & IEEE80211_CONF_IDLE &&
1298                     test_bit(WL1271_FLAG_JOINED, &wl->flags))
1299                         wl1271_unjoin(wl);
1300                 else if (!(conf->flags & IEEE80211_CONF_IDLE))
1301                         wl1271_dummy_join(wl);
1302
1303                 if (conf->flags & IEEE80211_CONF_IDLE) {
1304                         wl->rate_set = wl1271_min_rate_get(wl);
1305                         wl->sta_rate_set = 0;
1306                         wl1271_acx_rate_policies(wl);
1307                         wl1271_acx_keep_alive_config(
1308                                 wl, CMD_TEMPL_KLV_IDX_NULL_DATA,
1309                                 ACX_KEEP_ALIVE_TPL_INVALID);
1310                         set_bit(WL1271_FLAG_IDLE, &wl->flags);
1311                 } else
1312                         clear_bit(WL1271_FLAG_IDLE, &wl->flags);
1313         }
1314
1315         if (conf->flags & IEEE80211_CONF_PS &&
1316             !test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags)) {
1317                 set_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags);
1318
1319                 /*
1320                  * We enter PSM only if we're already associated.
1321                  * If we're not, we'll enter it when joining an SSID,
1322                  * through the bss_info_changed() hook.
1323                  */
1324                 if (test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags)) {
1325                         wl1271_debug(DEBUG_PSM, "psm enabled");
1326                         ret = wl1271_ps_set_mode(wl, STATION_POWER_SAVE_MODE,
1327                                                  true);
1328                 }
1329         } else if (!(conf->flags & IEEE80211_CONF_PS) &&
1330                    test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags)) {
1331                 wl1271_debug(DEBUG_PSM, "psm disabled");
1332
1333                 clear_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags);
1334
1335                 if (test_bit(WL1271_FLAG_PSM, &wl->flags))
1336                         ret = wl1271_ps_set_mode(wl, STATION_ACTIVE_MODE,
1337                                                  true);
1338         }
1339
1340         if (conf->power_level != wl->power_level) {
1341                 ret = wl1271_acx_tx_power(wl, conf->power_level);
1342                 if (ret < 0)
1343                         goto out_sleep;
1344
1345                 wl->power_level = conf->power_level;
1346         }
1347
1348 out_sleep:
1349         wl1271_ps_elp_sleep(wl);
1350
1351 out:
1352         mutex_unlock(&wl->mutex);
1353
1354         return ret;
1355 }
1356
1357 struct wl1271_filter_params {
1358         bool enabled;
1359         int mc_list_length;
1360         u8 mc_list[ACX_MC_ADDRESS_GROUP_MAX][ETH_ALEN];
1361 };
1362
1363 static u64 wl1271_op_prepare_multicast(struct ieee80211_hw *hw,
1364                                        struct netdev_hw_addr_list *mc_list)
1365 {
1366         struct wl1271_filter_params *fp;
1367         struct netdev_hw_addr *ha;
1368         struct wl1271 *wl = hw->priv;
1369
1370         if (unlikely(wl->state == WL1271_STATE_OFF))
1371                 return 0;
1372
1373         fp = kzalloc(sizeof(*fp), GFP_ATOMIC);
1374         if (!fp) {
1375                 wl1271_error("Out of memory setting filters.");
1376                 return 0;
1377         }
1378
1379         /* update multicast filtering parameters */
1380         fp->mc_list_length = 0;
1381         if (netdev_hw_addr_list_count(mc_list) > ACX_MC_ADDRESS_GROUP_MAX) {
1382                 fp->enabled = false;
1383         } else {
1384                 fp->enabled = true;
1385                 netdev_hw_addr_list_for_each(ha, mc_list) {
1386                         memcpy(fp->mc_list[fp->mc_list_length],
1387                                         ha->addr, ETH_ALEN);
1388                         fp->mc_list_length++;
1389                 }
1390         }
1391
1392         return (u64)(unsigned long)fp;
1393 }
1394
1395 #define WL1271_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
1396                                   FIF_ALLMULTI | \
1397                                   FIF_FCSFAIL | \
1398                                   FIF_BCN_PRBRESP_PROMISC | \
1399                                   FIF_CONTROL | \
1400                                   FIF_OTHER_BSS)
1401
1402 static void wl1271_op_configure_filter(struct ieee80211_hw *hw,
1403                                        unsigned int changed,
1404                                        unsigned int *total, u64 multicast)
1405 {
1406         struct wl1271_filter_params *fp = (void *)(unsigned long)multicast;
1407         struct wl1271 *wl = hw->priv;
1408         int ret;
1409
1410         wl1271_debug(DEBUG_MAC80211, "mac80211 configure filter");
1411
1412         mutex_lock(&wl->mutex);
1413
1414         *total &= WL1271_SUPPORTED_FILTERS;
1415         changed &= WL1271_SUPPORTED_FILTERS;
1416
1417         if (unlikely(wl->state == WL1271_STATE_OFF))
1418                 goto out;
1419
1420         ret = wl1271_ps_elp_wakeup(wl, false);
1421         if (ret < 0)
1422                 goto out;
1423
1424
1425         if (*total & FIF_ALLMULTI)
1426                 ret = wl1271_acx_group_address_tbl(wl, false, NULL, 0);
1427         else if (fp)
1428                 ret = wl1271_acx_group_address_tbl(wl, fp->enabled,
1429                                                    fp->mc_list,
1430                                                    fp->mc_list_length);
1431         if (ret < 0)
1432                 goto out_sleep;
1433
1434         /* determine, whether supported filter values have changed */
1435         if (changed == 0)
1436                 goto out_sleep;
1437
1438         /* configure filters */
1439         wl->filters = *total;
1440         wl1271_configure_filters(wl, 0);
1441
1442         /* apply configured filters */
1443         ret = wl1271_acx_rx_config(wl, wl->rx_config, wl->rx_filter);
1444         if (ret < 0)
1445                 goto out_sleep;
1446
1447 out_sleep:
1448         wl1271_ps_elp_sleep(wl);
1449
1450 out:
1451         mutex_unlock(&wl->mutex);
1452         kfree(fp);
1453 }
1454
1455 static int wl1271_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
1456                              struct ieee80211_vif *vif,
1457                              struct ieee80211_sta *sta,
1458                              struct ieee80211_key_conf *key_conf)
1459 {
1460         struct wl1271 *wl = hw->priv;
1461         const u8 *addr;
1462         int ret;
1463         u32 tx_seq_32 = 0;
1464         u16 tx_seq_16 = 0;
1465         u8 key_type;
1466
1467         static const u8 bcast_addr[ETH_ALEN] =
1468                 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
1469
1470         wl1271_debug(DEBUG_MAC80211, "mac80211 set key");
1471
1472         addr = sta ? sta->addr : bcast_addr;
1473
1474         wl1271_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
1475         wl1271_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
1476         wl1271_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
1477                      key_conf->alg, key_conf->keyidx,
1478                      key_conf->keylen, key_conf->flags);
1479         wl1271_dump(DEBUG_CRYPT, "KEY: ", key_conf->key, key_conf->keylen);
1480
1481         if (is_zero_ether_addr(addr)) {
1482                 /* We dont support TX only encryption */
1483                 ret = -EOPNOTSUPP;
1484                 goto out;
1485         }
1486
1487         mutex_lock(&wl->mutex);
1488
1489         ret = wl1271_ps_elp_wakeup(wl, false);
1490         if (ret < 0)
1491                 goto out_unlock;
1492
1493         switch (key_conf->alg) {
1494         case ALG_WEP:
1495                 key_type = KEY_WEP;
1496
1497                 key_conf->hw_key_idx = key_conf->keyidx;
1498                 break;
1499         case ALG_TKIP:
1500                 key_type = KEY_TKIP;
1501
1502                 key_conf->hw_key_idx = key_conf->keyidx;
1503                 tx_seq_32 = WL1271_TX_SECURITY_HI32(wl->tx_security_seq);
1504                 tx_seq_16 = WL1271_TX_SECURITY_LO16(wl->tx_security_seq);
1505                 break;
1506         case ALG_CCMP:
1507                 key_type = KEY_AES;
1508
1509                 key_conf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1510                 tx_seq_32 = WL1271_TX_SECURITY_HI32(wl->tx_security_seq);
1511                 tx_seq_16 = WL1271_TX_SECURITY_LO16(wl->tx_security_seq);
1512                 break;
1513         default:
1514                 wl1271_error("Unknown key algo 0x%x", key_conf->alg);
1515
1516                 ret = -EOPNOTSUPP;
1517                 goto out_sleep;
1518         }
1519
1520         switch (cmd) {
1521         case SET_KEY:
1522                 ret = wl1271_cmd_set_key(wl, KEY_ADD_OR_REPLACE,
1523                                          key_conf->keyidx, key_type,
1524                                          key_conf->keylen, key_conf->key,
1525                                          addr, tx_seq_32, tx_seq_16);
1526                 if (ret < 0) {
1527                         wl1271_error("Could not add or replace key");
1528                         goto out_sleep;
1529                 }
1530
1531                 /* the default WEP key needs to be configured at least once */
1532                 if (key_type == KEY_WEP) {
1533                         ret = wl1271_cmd_set_default_wep_key(wl,
1534                                                              wl->default_key);
1535                         if (ret < 0)
1536                                 goto out_sleep;
1537                 }
1538                 break;
1539
1540         case DISABLE_KEY:
1541                 /* The wl1271 does not allow to remove unicast keys - they
1542                    will be cleared automatically on next CMD_JOIN. Ignore the
1543                    request silently, as we dont want the mac80211 to emit
1544                    an error message. */
1545                 if (!is_broadcast_ether_addr(addr))
1546                         break;
1547
1548                 ret = wl1271_cmd_set_key(wl, KEY_REMOVE,
1549                                          key_conf->keyidx, key_type,
1550                                          key_conf->keylen, key_conf->key,
1551                                          addr, 0, 0);
1552                 if (ret < 0) {
1553                         wl1271_error("Could not remove key");
1554                         goto out_sleep;
1555                 }
1556                 break;
1557
1558         default:
1559                 wl1271_error("Unsupported key cmd 0x%x", cmd);
1560                 ret = -EOPNOTSUPP;
1561                 goto out_sleep;
1562
1563                 break;
1564         }
1565
1566 out_sleep:
1567         wl1271_ps_elp_sleep(wl);
1568
1569 out_unlock:
1570         mutex_unlock(&wl->mutex);
1571
1572 out:
1573         return ret;
1574 }
1575
1576 static int wl1271_op_hw_scan(struct ieee80211_hw *hw,
1577                              struct ieee80211_vif *vif,
1578                              struct cfg80211_scan_request *req)
1579 {
1580         struct wl1271 *wl = hw->priv;
1581         int ret;
1582         u8 *ssid = NULL;
1583         size_t len = 0;
1584
1585         wl1271_debug(DEBUG_MAC80211, "mac80211 hw scan");
1586
1587         if (req->n_ssids) {
1588                 ssid = req->ssids[0].ssid;
1589                 len = req->ssids[0].ssid_len;
1590         }
1591
1592         mutex_lock(&wl->mutex);
1593
1594         ret = wl1271_ps_elp_wakeup(wl, false);
1595         if (ret < 0)
1596                 goto out;
1597
1598         if (wl1271_11a_enabled())
1599                 ret = wl1271_cmd_scan(hw->priv, ssid, len,
1600                                       req->ie, req->ie_len, 1, 0,
1601                                       WL1271_SCAN_BAND_DUAL, 3);
1602         else
1603                 ret = wl1271_cmd_scan(hw->priv, ssid, len,
1604                                       req->ie, req->ie_len, 1, 0,
1605                                       WL1271_SCAN_BAND_2_4_GHZ, 3);
1606
1607         wl1271_ps_elp_sleep(wl);
1608
1609 out:
1610         mutex_unlock(&wl->mutex);
1611
1612         return ret;
1613 }
1614
1615 static int wl1271_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1616 {
1617         struct wl1271 *wl = hw->priv;
1618         int ret = 0;
1619
1620         mutex_lock(&wl->mutex);
1621
1622         if (unlikely(wl->state == WL1271_STATE_OFF))
1623                 goto out;
1624
1625         ret = wl1271_ps_elp_wakeup(wl, false);
1626         if (ret < 0)
1627                 goto out;
1628
1629         ret = wl1271_acx_rts_threshold(wl, (u16) value);
1630         if (ret < 0)
1631                 wl1271_warning("wl1271_op_set_rts_threshold failed: %d", ret);
1632
1633         wl1271_ps_elp_sleep(wl);
1634
1635 out:
1636         mutex_unlock(&wl->mutex);
1637
1638         return ret;
1639 }
1640
1641 static void wl1271_ssid_set(struct wl1271 *wl, struct sk_buff *beacon)
1642 {
1643         u8 *ptr = beacon->data +
1644                 offsetof(struct ieee80211_mgmt, u.beacon.variable);
1645
1646         /* find the location of the ssid in the beacon */
1647         while (ptr < beacon->data + beacon->len) {
1648                 if (ptr[0] == WLAN_EID_SSID) {
1649                         wl->ssid_len = ptr[1];
1650                         memcpy(wl->ssid, ptr+2, wl->ssid_len);
1651                         return;
1652                 }
1653                 ptr += ptr[1];
1654         }
1655         wl1271_error("ad-hoc beacon template has no SSID!\n");
1656 }
1657
1658 static void wl1271_op_bss_info_changed(struct ieee80211_hw *hw,
1659                                        struct ieee80211_vif *vif,
1660                                        struct ieee80211_bss_conf *bss_conf,
1661                                        u32 changed)
1662 {
1663         enum wl1271_cmd_ps_mode mode;
1664         struct wl1271 *wl = hw->priv;
1665         bool do_join = false;
1666         bool set_assoc = false;
1667         int ret;
1668
1669         wl1271_debug(DEBUG_MAC80211, "mac80211 bss info changed");
1670
1671         mutex_lock(&wl->mutex);
1672
1673         ret = wl1271_ps_elp_wakeup(wl, false);
1674         if (ret < 0)
1675                 goto out;
1676
1677         if ((changed && BSS_CHANGED_BEACON_INT) &&
1678             (wl->bss_type == BSS_TYPE_IBSS)) {
1679                 wl1271_debug(DEBUG_ADHOC, "ad-hoc beacon interval updated: %d",
1680                         bss_conf->beacon_int);
1681
1682                 wl->beacon_int = bss_conf->beacon_int;
1683                 do_join = true;
1684         }
1685
1686         if ((changed && BSS_CHANGED_BEACON) &&
1687             (wl->bss_type == BSS_TYPE_IBSS)) {
1688                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
1689
1690                 wl1271_debug(DEBUG_ADHOC, "ad-hoc beacon updated");
1691
1692                 if (beacon) {
1693                         struct ieee80211_hdr *hdr;
1694
1695                         wl1271_ssid_set(wl, beacon);
1696                         ret = wl1271_cmd_template_set(wl, CMD_TEMPL_BEACON,
1697                                                       beacon->data,
1698                                                       beacon->len, 0,
1699                                                       wl1271_min_rate_get(wl));
1700
1701                         if (ret < 0) {
1702                                 dev_kfree_skb(beacon);
1703                                 goto out_sleep;
1704                         }
1705
1706                         hdr = (struct ieee80211_hdr *) beacon->data;
1707                         hdr->frame_control = cpu_to_le16(
1708                                 IEEE80211_FTYPE_MGMT |
1709                                 IEEE80211_STYPE_PROBE_RESP);
1710
1711                         ret = wl1271_cmd_template_set(wl,
1712                                                       CMD_TEMPL_PROBE_RESPONSE,
1713                                                       beacon->data,
1714                                                       beacon->len, 0,
1715                                                       wl1271_min_rate_get(wl));
1716                         dev_kfree_skb(beacon);
1717                         if (ret < 0)
1718                                 goto out_sleep;
1719
1720                         /* Need to update the SSID (for filtering etc) */
1721                         do_join = true;
1722                 }
1723         }
1724
1725         if ((changed & BSS_CHANGED_BEACON_ENABLED) &&
1726             (wl->bss_type == BSS_TYPE_IBSS)) {
1727                 wl1271_debug(DEBUG_ADHOC, "ad-hoc beaconing: %s",
1728                              bss_conf->enable_beacon ? "enabled" : "disabled");
1729
1730                 if (bss_conf->enable_beacon)
1731                         wl->set_bss_type = BSS_TYPE_IBSS;
1732                 else
1733                         wl->set_bss_type = BSS_TYPE_STA_BSS;
1734                 do_join = true;
1735         }
1736
1737         if (changed & BSS_CHANGED_CQM) {
1738                 bool enable = false;
1739                 if (bss_conf->cqm_rssi_thold)
1740                         enable = true;
1741                 ret = wl1271_acx_rssi_snr_trigger(wl, enable,
1742                                                   bss_conf->cqm_rssi_thold,
1743                                                   bss_conf->cqm_rssi_hyst);
1744                 if (ret < 0)
1745                         goto out;
1746                 wl->rssi_thold = bss_conf->cqm_rssi_thold;
1747         }
1748
1749         if ((changed & BSS_CHANGED_BSSID) &&
1750             /*
1751              * Now we know the correct bssid, so we send a new join command
1752              * and enable the BSSID filter
1753              */
1754             memcmp(wl->bssid, bss_conf->bssid, ETH_ALEN)) {
1755                         memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
1756
1757                         ret = wl1271_cmd_build_null_data(wl);
1758                         if (ret < 0)
1759                                 goto out_sleep;
1760
1761                         ret = wl1271_build_qos_null_data(wl);
1762                         if (ret < 0)
1763                                 goto out_sleep;
1764
1765                         /* filter out all packets not from this BSSID */
1766                         wl1271_configure_filters(wl, 0);
1767
1768                         /* Need to update the BSSID (for filtering etc) */
1769                         do_join = true;
1770         }
1771
1772         if (changed & BSS_CHANGED_ASSOC) {
1773                 if (bss_conf->assoc) {
1774                         u32 rates;
1775                         wl->aid = bss_conf->aid;
1776                         set_assoc = true;
1777
1778                         /*
1779                          * use basic rates from AP, and determine lowest rate
1780                          * to use with control frames.
1781                          */
1782                         rates = bss_conf->basic_rates;
1783                         wl->basic_rate_set = wl1271_tx_enabled_rates_get(wl,
1784                                                                          rates);
1785                         wl->basic_rate = wl1271_min_rate_get(wl);
1786                         ret = wl1271_acx_rate_policies(wl);
1787                         if (ret < 0)
1788                                 goto out_sleep;
1789
1790                         /*
1791                          * with wl1271, we don't need to update the
1792                          * beacon_int and dtim_period, because the firmware
1793                          * updates it by itself when the first beacon is
1794                          * received after a join.
1795                          */
1796                         ret = wl1271_cmd_build_ps_poll(wl, wl->aid);
1797                         if (ret < 0)
1798                                 goto out_sleep;
1799
1800                         /*
1801                          * The SSID is intentionally set to NULL here - the
1802                          * firmware will set the probe request with a
1803                          * broadcast SSID regardless of what we set in the
1804                          * template.
1805                          */
1806                         ret = wl1271_cmd_build_probe_req(wl, NULL, 0,
1807                                                          NULL, 0, wl->band);
1808
1809                         /* enable the connection monitoring feature */
1810                         ret = wl1271_acx_conn_monit_params(wl, true);
1811                         if (ret < 0)
1812                                 goto out_sleep;
1813
1814                         /* If we want to go in PSM but we're not there yet */
1815                         if (test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags) &&
1816                             !test_bit(WL1271_FLAG_PSM, &wl->flags)) {
1817                                 mode = STATION_POWER_SAVE_MODE;
1818                                 ret = wl1271_ps_set_mode(wl, mode, true);
1819                                 if (ret < 0)
1820                                         goto out_sleep;
1821                         }
1822                 } else {
1823                         /* use defaults when not associated */
1824                         clear_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags);
1825                         wl->aid = 0;
1826
1827                         /* revert back to minimum rates for the current band */
1828                         wl1271_set_band_rate(wl);
1829                         wl->basic_rate = wl1271_min_rate_get(wl);
1830                         ret = wl1271_acx_rate_policies(wl);
1831                         if (ret < 0)
1832                                 goto out_sleep;
1833
1834                         /* disable connection monitor features */
1835                         ret = wl1271_acx_conn_monit_params(wl, false);
1836
1837                         /* Disable the keep-alive feature */
1838                         ret = wl1271_acx_keep_alive_mode(wl, false);
1839
1840                         if (ret < 0)
1841                                 goto out_sleep;
1842                 }
1843
1844         }
1845
1846         if (changed & BSS_CHANGED_ERP_SLOT) {
1847                 if (bss_conf->use_short_slot)
1848                         ret = wl1271_acx_slot(wl, SLOT_TIME_SHORT);
1849                 else
1850                         ret = wl1271_acx_slot(wl, SLOT_TIME_LONG);
1851                 if (ret < 0) {
1852                         wl1271_warning("Set slot time failed %d", ret);
1853                         goto out_sleep;
1854                 }
1855         }
1856
1857         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1858                 if (bss_conf->use_short_preamble)
1859                         wl1271_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1860                 else
1861                         wl1271_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1862         }
1863
1864         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1865                 if (bss_conf->use_cts_prot)
1866                         ret = wl1271_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1867                 else
1868                         ret = wl1271_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1869                 if (ret < 0) {
1870                         wl1271_warning("Set ctsprotect failed %d", ret);
1871                         goto out_sleep;
1872                 }
1873         }
1874
1875         if (do_join) {
1876                 ret = wl1271_join(wl, set_assoc);
1877                 if (ret < 0) {
1878                         wl1271_warning("cmd join failed %d", ret);
1879                         goto out_sleep;
1880                 }
1881         }
1882
1883 out_sleep:
1884         wl1271_ps_elp_sleep(wl);
1885
1886 out:
1887         mutex_unlock(&wl->mutex);
1888 }
1889
1890 static int wl1271_op_conf_tx(struct ieee80211_hw *hw, u16 queue,
1891                              const struct ieee80211_tx_queue_params *params)
1892 {
1893         struct wl1271 *wl = hw->priv;
1894         u8 ps_scheme;
1895         int ret;
1896
1897         mutex_lock(&wl->mutex);
1898
1899         wl1271_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
1900
1901         ret = wl1271_ps_elp_wakeup(wl, false);
1902         if (ret < 0)
1903                 goto out;
1904
1905         /* the txop is confed in units of 32us by the mac80211, we need us */
1906         ret = wl1271_acx_ac_cfg(wl, wl1271_tx_get_queue(queue),
1907                                 params->cw_min, params->cw_max,
1908                                 params->aifs, params->txop << 5);
1909         if (ret < 0)
1910                 goto out_sleep;
1911
1912         if (params->uapsd)
1913                 ps_scheme = CONF_PS_SCHEME_UPSD_TRIGGER;
1914         else
1915                 ps_scheme = CONF_PS_SCHEME_LEGACY;
1916
1917         ret = wl1271_acx_tid_cfg(wl, wl1271_tx_get_queue(queue),
1918                                  CONF_CHANNEL_TYPE_EDCF,
1919                                  wl1271_tx_get_queue(queue),
1920                                  ps_scheme, CONF_ACK_POLICY_LEGACY, 0, 0);
1921         if (ret < 0)
1922                 goto out_sleep;
1923
1924 out_sleep:
1925         wl1271_ps_elp_sleep(wl);
1926
1927 out:
1928         mutex_unlock(&wl->mutex);
1929
1930         return ret;
1931 }
1932
1933
1934 /* can't be const, mac80211 writes to this */
1935 static struct ieee80211_rate wl1271_rates[] = {
1936         { .bitrate = 10,
1937           .hw_value = CONF_HW_BIT_RATE_1MBPS,
1938           .hw_value_short = CONF_HW_BIT_RATE_1MBPS, },
1939         { .bitrate = 20,
1940           .hw_value = CONF_HW_BIT_RATE_2MBPS,
1941           .hw_value_short = CONF_HW_BIT_RATE_2MBPS,
1942           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1943         { .bitrate = 55,
1944           .hw_value = CONF_HW_BIT_RATE_5_5MBPS,
1945           .hw_value_short = CONF_HW_BIT_RATE_5_5MBPS,
1946           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1947         { .bitrate = 110,
1948           .hw_value = CONF_HW_BIT_RATE_11MBPS,
1949           .hw_value_short = CONF_HW_BIT_RATE_11MBPS,
1950           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1951         { .bitrate = 60,
1952           .hw_value = CONF_HW_BIT_RATE_6MBPS,
1953           .hw_value_short = CONF_HW_BIT_RATE_6MBPS, },
1954         { .bitrate = 90,
1955           .hw_value = CONF_HW_BIT_RATE_9MBPS,
1956           .hw_value_short = CONF_HW_BIT_RATE_9MBPS, },
1957         { .bitrate = 120,
1958           .hw_value = CONF_HW_BIT_RATE_12MBPS,
1959           .hw_value_short = CONF_HW_BIT_RATE_12MBPS, },
1960         { .bitrate = 180,
1961           .hw_value = CONF_HW_BIT_RATE_18MBPS,
1962           .hw_value_short = CONF_HW_BIT_RATE_18MBPS, },
1963         { .bitrate = 240,
1964           .hw_value = CONF_HW_BIT_RATE_24MBPS,
1965           .hw_value_short = CONF_HW_BIT_RATE_24MBPS, },
1966         { .bitrate = 360,
1967          .hw_value = CONF_HW_BIT_RATE_36MBPS,
1968          .hw_value_short = CONF_HW_BIT_RATE_36MBPS, },
1969         { .bitrate = 480,
1970           .hw_value = CONF_HW_BIT_RATE_48MBPS,
1971           .hw_value_short = CONF_HW_BIT_RATE_48MBPS, },
1972         { .bitrate = 540,
1973           .hw_value = CONF_HW_BIT_RATE_54MBPS,
1974           .hw_value_short = CONF_HW_BIT_RATE_54MBPS, },
1975 };
1976
1977 /* can't be const, mac80211 writes to this */
1978 static struct ieee80211_channel wl1271_channels[] = {
1979         { .hw_value = 1, .center_freq = 2412, .max_power = 25 },
1980         { .hw_value = 2, .center_freq = 2417, .max_power = 25 },
1981         { .hw_value = 3, .center_freq = 2422, .max_power = 25 },
1982         { .hw_value = 4, .center_freq = 2427, .max_power = 25 },
1983         { .hw_value = 5, .center_freq = 2432, .max_power = 25 },
1984         { .hw_value = 6, .center_freq = 2437, .max_power = 25 },
1985         { .hw_value = 7, .center_freq = 2442, .max_power = 25 },
1986         { .hw_value = 8, .center_freq = 2447, .max_power = 25 },
1987         { .hw_value = 9, .center_freq = 2452, .max_power = 25 },
1988         { .hw_value = 10, .center_freq = 2457, .max_power = 25 },
1989         { .hw_value = 11, .center_freq = 2462, .max_power = 25 },
1990         { .hw_value = 12, .center_freq = 2467, .max_power = 25 },
1991         { .hw_value = 13, .center_freq = 2472, .max_power = 25 },
1992 };
1993
1994 /* mapping to indexes for wl1271_rates */
1995 const static u8 wl1271_rate_to_idx_2ghz[] = {
1996         /* MCS rates are used only with 11n */
1997         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS7 */
1998         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS6 */
1999         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS5 */
2000         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS4 */
2001         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS3 */
2002         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS2 */
2003         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS1 */
2004         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS0 */
2005
2006         11,                            /* CONF_HW_RXTX_RATE_54   */
2007         10,                            /* CONF_HW_RXTX_RATE_48   */
2008         9,                             /* CONF_HW_RXTX_RATE_36   */
2009         8,                             /* CONF_HW_RXTX_RATE_24   */
2010
2011         /* TI-specific rate */
2012         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_22   */
2013
2014         7,                             /* CONF_HW_RXTX_RATE_18   */
2015         6,                             /* CONF_HW_RXTX_RATE_12   */
2016         3,                             /* CONF_HW_RXTX_RATE_11   */
2017         5,                             /* CONF_HW_RXTX_RATE_9    */
2018         4,                             /* CONF_HW_RXTX_RATE_6    */
2019         2,                             /* CONF_HW_RXTX_RATE_5_5  */
2020         1,                             /* CONF_HW_RXTX_RATE_2    */
2021         0                              /* CONF_HW_RXTX_RATE_1    */
2022 };
2023
2024 /* can't be const, mac80211 writes to this */
2025 static struct ieee80211_supported_band wl1271_band_2ghz = {
2026         .channels = wl1271_channels,
2027         .n_channels = ARRAY_SIZE(wl1271_channels),
2028         .bitrates = wl1271_rates,
2029         .n_bitrates = ARRAY_SIZE(wl1271_rates),
2030 };
2031
2032 /* 5 GHz data rates for WL1273 */
2033 static struct ieee80211_rate wl1271_rates_5ghz[] = {
2034         { .bitrate = 60,
2035           .hw_value = CONF_HW_BIT_RATE_6MBPS,
2036           .hw_value_short = CONF_HW_BIT_RATE_6MBPS, },
2037         { .bitrate = 90,
2038           .hw_value = CONF_HW_BIT_RATE_9MBPS,
2039           .hw_value_short = CONF_HW_BIT_RATE_9MBPS, },
2040         { .bitrate = 120,
2041           .hw_value = CONF_HW_BIT_RATE_12MBPS,
2042           .hw_value_short = CONF_HW_BIT_RATE_12MBPS, },
2043         { .bitrate = 180,
2044           .hw_value = CONF_HW_BIT_RATE_18MBPS,
2045           .hw_value_short = CONF_HW_BIT_RATE_18MBPS, },
2046         { .bitrate = 240,
2047           .hw_value = CONF_HW_BIT_RATE_24MBPS,
2048           .hw_value_short = CONF_HW_BIT_RATE_24MBPS, },
2049         { .bitrate = 360,
2050          .hw_value = CONF_HW_BIT_RATE_36MBPS,
2051          .hw_value_short = CONF_HW_BIT_RATE_36MBPS, },
2052         { .bitrate = 480,
2053           .hw_value = CONF_HW_BIT_RATE_48MBPS,
2054           .hw_value_short = CONF_HW_BIT_RATE_48MBPS, },
2055         { .bitrate = 540,
2056           .hw_value = CONF_HW_BIT_RATE_54MBPS,
2057           .hw_value_short = CONF_HW_BIT_RATE_54MBPS, },
2058 };
2059
2060 /* 5 GHz band channels for WL1273 */
2061 static struct ieee80211_channel wl1271_channels_5ghz[] = {
2062         { .hw_value = 183, .center_freq = 4915},
2063         { .hw_value = 184, .center_freq = 4920},
2064         { .hw_value = 185, .center_freq = 4925},
2065         { .hw_value = 187, .center_freq = 4935},
2066         { .hw_value = 188, .center_freq = 4940},
2067         { .hw_value = 189, .center_freq = 4945},
2068         { .hw_value = 192, .center_freq = 4960},
2069         { .hw_value = 196, .center_freq = 4980},
2070         { .hw_value = 7, .center_freq = 5035},
2071         { .hw_value = 8, .center_freq = 5040},
2072         { .hw_value = 9, .center_freq = 5045},
2073         { .hw_value = 11, .center_freq = 5055},
2074         { .hw_value = 12, .center_freq = 5060},
2075         { .hw_value = 16, .center_freq = 5080},
2076         { .hw_value = 34, .center_freq = 5170},
2077         { .hw_value = 36, .center_freq = 5180},
2078         { .hw_value = 38, .center_freq = 5190},
2079         { .hw_value = 40, .center_freq = 5200},
2080         { .hw_value = 42, .center_freq = 5210},
2081         { .hw_value = 44, .center_freq = 5220},
2082         { .hw_value = 46, .center_freq = 5230},
2083         { .hw_value = 48, .center_freq = 5240},
2084         { .hw_value = 52, .center_freq = 5260},
2085         { .hw_value = 56, .center_freq = 5280},
2086         { .hw_value = 60, .center_freq = 5300},
2087         { .hw_value = 64, .center_freq = 5320},
2088         { .hw_value = 100, .center_freq = 5500},
2089         { .hw_value = 104, .center_freq = 5520},
2090         { .hw_value = 108, .center_freq = 5540},
2091         { .hw_value = 112, .center_freq = 5560},
2092         { .hw_value = 116, .center_freq = 5580},
2093         { .hw_value = 120, .center_freq = 5600},
2094         { .hw_value = 124, .center_freq = 5620},
2095         { .hw_value = 128, .center_freq = 5640},
2096         { .hw_value = 132, .center_freq = 5660},
2097         { .hw_value = 136, .center_freq = 5680},
2098         { .hw_value = 140, .center_freq = 5700},
2099         { .hw_value = 149, .center_freq = 5745},
2100         { .hw_value = 153, .center_freq = 5765},
2101         { .hw_value = 157, .center_freq = 5785},
2102         { .hw_value = 161, .center_freq = 5805},
2103         { .hw_value = 165, .center_freq = 5825},
2104 };
2105
2106 /* mapping to indexes for wl1271_rates_5ghz */
2107 const static u8 wl1271_rate_to_idx_5ghz[] = {
2108         /* MCS rates are used only with 11n */
2109         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS7 */
2110         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS6 */
2111         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS5 */
2112         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS4 */
2113         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS3 */
2114         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS2 */
2115         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS1 */
2116         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_MCS0 */
2117
2118         7,                             /* CONF_HW_RXTX_RATE_54   */
2119         6,                             /* CONF_HW_RXTX_RATE_48   */
2120         5,                             /* CONF_HW_RXTX_RATE_36   */
2121         4,                             /* CONF_HW_RXTX_RATE_24   */
2122
2123         /* TI-specific rate */
2124         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_22   */
2125
2126         3,                             /* CONF_HW_RXTX_RATE_18   */
2127         2,                             /* CONF_HW_RXTX_RATE_12   */
2128         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_11   */
2129         1,                             /* CONF_HW_RXTX_RATE_9    */
2130         0,                             /* CONF_HW_RXTX_RATE_6    */
2131         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_5_5  */
2132         CONF_HW_RXTX_RATE_UNSUPPORTED, /* CONF_HW_RXTX_RATE_2    */
2133         CONF_HW_RXTX_RATE_UNSUPPORTED  /* CONF_HW_RXTX_RATE_1    */
2134 };
2135
2136 static struct ieee80211_supported_band wl1271_band_5ghz = {
2137         .channels = wl1271_channels_5ghz,
2138         .n_channels = ARRAY_SIZE(wl1271_channels_5ghz),
2139         .bitrates = wl1271_rates_5ghz,
2140         .n_bitrates = ARRAY_SIZE(wl1271_rates_5ghz),
2141 };
2142
2143 const static u8 *wl1271_band_rate_to_idx[] = {
2144         [IEEE80211_BAND_2GHZ] = wl1271_rate_to_idx_2ghz,
2145         [IEEE80211_BAND_5GHZ] = wl1271_rate_to_idx_5ghz
2146 };
2147
2148 static const struct ieee80211_ops wl1271_ops = {
2149         .start = wl1271_op_start,
2150         .stop = wl1271_op_stop,
2151         .add_interface = wl1271_op_add_interface,
2152         .remove_interface = wl1271_op_remove_interface,
2153         .config = wl1271_op_config,
2154         .prepare_multicast = wl1271_op_prepare_multicast,
2155         .configure_filter = wl1271_op_configure_filter,
2156         .tx = wl1271_op_tx,
2157         .set_key = wl1271_op_set_key,
2158         .hw_scan = wl1271_op_hw_scan,
2159         .bss_info_changed = wl1271_op_bss_info_changed,
2160         .set_rts_threshold = wl1271_op_set_rts_threshold,
2161         .conf_tx = wl1271_op_conf_tx,
2162         CFG80211_TESTMODE_CMD(wl1271_tm_cmd)
2163 };
2164
2165
2166 u8 wl1271_rate_to_idx(struct wl1271 *wl, int rate)
2167 {
2168         u8 idx;
2169
2170         BUG_ON(wl->band >= sizeof(wl1271_band_rate_to_idx)/sizeof(u8 *));
2171
2172         if (unlikely(rate >= CONF_HW_RXTX_RATE_MAX)) {
2173                 wl1271_error("Illegal RX rate from HW: %d", rate);
2174                 return 0;
2175         }
2176
2177         idx = wl1271_band_rate_to_idx[wl->band][rate];
2178         if (unlikely(idx == CONF_HW_RXTX_RATE_UNSUPPORTED)) {
2179                 wl1271_error("Unsupported RX rate from HW: %d", rate);
2180                 return 0;
2181         }
2182
2183         return idx;
2184 }
2185
2186 static ssize_t wl1271_sysfs_show_bt_coex_state(struct device *dev,
2187                                                struct device_attribute *attr,
2188                                                char *buf)
2189 {
2190         struct wl1271 *wl = dev_get_drvdata(dev);
2191         ssize_t len;
2192
2193         /* FIXME: what's the maximum length of buf? page size?*/
2194         len = 500;
2195
2196         mutex_lock(&wl->mutex);
2197         len = snprintf(buf, len, "%d\n\n0 - off\n1 - on\n",
2198                        wl->sg_enabled);
2199         mutex_unlock(&wl->mutex);
2200
2201         return len;
2202
2203 }
2204
2205 static ssize_t wl1271_sysfs_store_bt_coex_state(struct device *dev,
2206                                                 struct device_attribute *attr,
2207                                                 const char *buf, size_t count)
2208 {
2209         struct wl1271 *wl = dev_get_drvdata(dev);
2210         unsigned long res;
2211         int ret;
2212
2213         ret = strict_strtoul(buf, 10, &res);
2214
2215         if (ret < 0) {
2216                 wl1271_warning("incorrect value written to bt_coex_mode");
2217                 return count;
2218         }
2219
2220         mutex_lock(&wl->mutex);
2221
2222         res = !!res;
2223
2224         if (res == wl->sg_enabled)
2225                 goto out;
2226
2227         wl->sg_enabled = res;
2228
2229         if (wl->state == WL1271_STATE_OFF)
2230                 goto out;
2231
2232         ret = wl1271_ps_elp_wakeup(wl, false);
2233         if (ret < 0)
2234                 goto out;
2235
2236         wl1271_acx_sg_enable(wl, wl->sg_enabled);
2237         wl1271_ps_elp_sleep(wl);
2238
2239  out:
2240         mutex_unlock(&wl->mutex);
2241         return count;
2242 }
2243
2244 static DEVICE_ATTR(bt_coex_state, S_IRUGO | S_IWUSR,
2245                    wl1271_sysfs_show_bt_coex_state,
2246                    wl1271_sysfs_store_bt_coex_state);
2247
2248 static ssize_t wl1271_sysfs_show_hw_pg_ver(struct device *dev,
2249                                            struct device_attribute *attr,
2250                                            char *buf)
2251 {
2252         struct wl1271 *wl = dev_get_drvdata(dev);
2253         ssize_t len;
2254
2255         /* FIXME: what's the maximum length of buf? page size?*/
2256         len = 500;
2257
2258         mutex_lock(&wl->mutex);
2259         if (wl->hw_pg_ver >= 0)
2260                 len = snprintf(buf, len, "%d\n", wl->hw_pg_ver);
2261         else
2262                 len = snprintf(buf, len, "n/a\n");
2263         mutex_unlock(&wl->mutex);
2264
2265         return len;
2266 }
2267
2268 static DEVICE_ATTR(hw_pg_ver, S_IRUGO | S_IWUSR,
2269                    wl1271_sysfs_show_hw_pg_ver, NULL);
2270
2271 int wl1271_register_hw(struct wl1271 *wl)
2272 {
2273         int ret;
2274
2275         if (wl->mac80211_registered)
2276                 return 0;
2277
2278         SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
2279
2280         ret = ieee80211_register_hw(wl->hw);
2281         if (ret < 0) {
2282                 wl1271_error("unable to register mac80211 hw: %d", ret);
2283                 return ret;
2284         }
2285
2286         wl->mac80211_registered = true;
2287
2288         wl1271_notice("loaded");
2289
2290         return 0;
2291 }
2292 EXPORT_SYMBOL_GPL(wl1271_register_hw);
2293
2294 void wl1271_unregister_hw(struct wl1271 *wl)
2295 {
2296         ieee80211_unregister_hw(wl->hw);
2297         wl->mac80211_registered = false;
2298
2299 }
2300 EXPORT_SYMBOL_GPL(wl1271_unregister_hw);
2301
2302 int wl1271_init_ieee80211(struct wl1271 *wl)
2303 {
2304         /* The tx descriptor buffer and the TKIP space. */
2305         wl->hw->extra_tx_headroom = WL1271_TKIP_IV_SPACE +
2306                 sizeof(struct wl1271_tx_hw_descr);
2307
2308         /* unit us */
2309         /* FIXME: find a proper value */
2310         wl->hw->channel_change_time = 10000;
2311         wl->hw->max_listen_interval = wl->conf.conn.max_listen_interval;
2312
2313         wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
2314                 IEEE80211_HW_BEACON_FILTER |
2315                 IEEE80211_HW_SUPPORTS_PS |
2316                 IEEE80211_HW_SUPPORTS_UAPSD |
2317                 IEEE80211_HW_HAS_RATE_CONTROL |
2318                 IEEE80211_HW_CONNECTION_MONITOR |
2319                 IEEE80211_HW_SUPPORTS_CQM_RSSI;
2320
2321         wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2322                 BIT(NL80211_IFTYPE_ADHOC);
2323         wl->hw->wiphy->max_scan_ssids = 1;
2324         wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1271_band_2ghz;
2325
2326         if (wl1271_11a_enabled())
2327                 wl->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &wl1271_band_5ghz;
2328
2329         wl->hw->queues = 4;
2330         wl->hw->max_rates = 1;
2331
2332         SET_IEEE80211_DEV(wl->hw, wl1271_wl_to_dev(wl));
2333
2334         return 0;
2335 }
2336 EXPORT_SYMBOL_GPL(wl1271_init_ieee80211);
2337
2338 #define WL1271_DEFAULT_CHANNEL 0
2339
2340 struct ieee80211_hw *wl1271_alloc_hw(void)
2341 {
2342         struct ieee80211_hw *hw;
2343         struct platform_device *plat_dev = NULL;
2344         struct wl1271 *wl;
2345         int i, ret;
2346
2347         hw = ieee80211_alloc_hw(sizeof(*wl), &wl1271_ops);
2348         if (!hw) {
2349                 wl1271_error("could not alloc ieee80211_hw");
2350                 ret = -ENOMEM;
2351                 goto err_hw_alloc;
2352         }
2353
2354         plat_dev = kmalloc(sizeof(wl1271_device), GFP_KERNEL);
2355         if (!plat_dev) {
2356                 wl1271_error("could not allocate platform_device");
2357                 ret = -ENOMEM;
2358                 goto err_plat_alloc;
2359         }
2360
2361         memcpy(plat_dev, &wl1271_device, sizeof(wl1271_device));
2362
2363         wl = hw->priv;
2364         memset(wl, 0, sizeof(*wl));
2365
2366         INIT_LIST_HEAD(&wl->list);
2367
2368         wl->hw = hw;
2369         wl->plat_dev = plat_dev;
2370
2371         skb_queue_head_init(&wl->tx_queue);
2372
2373         INIT_DELAYED_WORK(&wl->elp_work, wl1271_elp_work);
2374         wl->channel = WL1271_DEFAULT_CHANNEL;
2375         wl->beacon_int = WL1271_DEFAULT_BEACON_INT;
2376         wl->default_key = 0;
2377         wl->rx_counter = 0;
2378         wl->rx_config = WL1271_DEFAULT_RX_CONFIG;
2379         wl->rx_filter = WL1271_DEFAULT_RX_FILTER;
2380         wl->psm_entry_retry = 0;
2381         wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
2382         wl->basic_rate_set = CONF_TX_RATE_MASK_BASIC;
2383         wl->basic_rate = CONF_TX_RATE_MASK_BASIC;
2384         wl->rate_set = CONF_TX_RATE_MASK_BASIC;
2385         wl->sta_rate_set = 0;
2386         wl->band = IEEE80211_BAND_2GHZ;
2387         wl->vif = NULL;
2388         wl->flags = 0;
2389         wl->sg_enabled = true;
2390         wl->hw_pg_ver = -1;
2391
2392         for (i = 0; i < ACX_TX_DESCRIPTORS; i++)
2393                 wl->tx_frames[i] = NULL;
2394
2395         spin_lock_init(&wl->wl_lock);
2396
2397         wl->state = WL1271_STATE_OFF;
2398         mutex_init(&wl->mutex);
2399
2400         /* Apply default driver configuration. */
2401         wl1271_conf_init(wl);
2402
2403         wl1271_debugfs_init(wl);
2404
2405         /* Register platform device */
2406         ret = platform_device_register(wl->plat_dev);
2407         if (ret) {
2408                 wl1271_error("couldn't register platform device");
2409                 goto err_hw;
2410         }
2411         dev_set_drvdata(&wl->plat_dev->dev, wl);
2412
2413         /* Create sysfs file to control bt coex state */
2414         ret = device_create_file(&wl->plat_dev->dev, &dev_attr_bt_coex_state);
2415         if (ret < 0) {
2416                 wl1271_error("failed to create sysfs file bt_coex_state");
2417                 goto err_platform;
2418         }
2419
2420         /* Create sysfs file to get HW PG version */
2421         ret = device_create_file(&wl->plat_dev->dev, &dev_attr_hw_pg_ver);
2422         if (ret < 0) {
2423                 wl1271_error("failed to create sysfs file hw_pg_ver");
2424                 goto err_bt_coex_state;
2425         }
2426
2427         return hw;
2428
2429 err_bt_coex_state:
2430         device_remove_file(&wl->plat_dev->dev, &dev_attr_bt_coex_state);
2431
2432 err_platform:
2433         platform_device_unregister(wl->plat_dev);
2434
2435 err_hw:
2436         wl1271_debugfs_exit(wl);
2437         kfree(plat_dev);
2438
2439 err_plat_alloc:
2440         ieee80211_free_hw(hw);
2441
2442 err_hw_alloc:
2443
2444         return ERR_PTR(ret);
2445 }
2446 EXPORT_SYMBOL_GPL(wl1271_alloc_hw);
2447
2448 int wl1271_free_hw(struct wl1271 *wl)
2449 {
2450         platform_device_unregister(wl->plat_dev);
2451         kfree(wl->plat_dev);
2452
2453         wl1271_debugfs_exit(wl);
2454
2455         vfree(wl->fw);
2456         wl->fw = NULL;
2457         kfree(wl->nvs);
2458         wl->nvs = NULL;
2459
2460         kfree(wl->fw_status);
2461         kfree(wl->tx_res_if);
2462
2463         ieee80211_free_hw(wl->hw);
2464
2465         return 0;
2466 }
2467 EXPORT_SYMBOL_GPL(wl1271_free_hw);
2468
2469 MODULE_LICENSE("GPL");
2470 MODULE_AUTHOR("Luciano Coelho <luciano.coelho@nokia.com>");
2471 MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");