drivers/net/wireless/ath/ath9k/htc_drv_init.c

   1 /*
   2  * Copyright (c) 2010 Atheros Communications Inc.
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #include "htc.h"
  18
  19 MODULE_AUTHOR("Atheros Communications");
  20 MODULE_LICENSE("Dual BSD/GPL");
  21 MODULE_DESCRIPTION("Atheros driver 802.11n HTC based wireless devices");
  22
  23 static unsigned int ath9k_debug = ATH_DBG_DEFAULT;
  24 module_param_named(debug, ath9k_debug, uint, 0);
  25 MODULE_PARM_DESC(debug, "Debugging mask");
  26
  27 int htc_modparam_nohwcrypt;
  28 module_param_named(nohwcrypt, htc_modparam_nohwcrypt, int, 0444);
  29 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption");
  30
  31 #define CHAN2G(_freq, _idx)  { \
  32         .center_freq = (_freq), \
  33         .hw_value = (_idx), \
  34         .max_power = 20, \
  35 }
  36
  37 #define CHAN5G(_freq, _idx) { \
  38         .band = IEEE80211_BAND_5GHZ, \
  39         .center_freq = (_freq), \
  40         .hw_value = (_idx), \
  41         .max_power = 20, \
  42 }
  43
  44 #define ATH_HTC_BTCOEX_PRODUCT_ID "wb193"
  45
  46 static struct ieee80211_channel ath9k_2ghz_channels[] = {
  47         CHAN2G(2412, 0), /* Channel 1 */
  48         CHAN2G(2417, 1), /* Channel 2 */
  49         CHAN2G(2422, 2), /* Channel 3 */
  50         CHAN2G(2427, 3), /* Channel 4 */
  51         CHAN2G(2432, 4), /* Channel 5 */
  52         CHAN2G(2437, 5), /* Channel 6 */
  53         CHAN2G(2442, 6), /* Channel 7 */
  54         CHAN2G(2447, 7), /* Channel 8 */
  55         CHAN2G(2452, 8), /* Channel 9 */
  56         CHAN2G(2457, 9), /* Channel 10 */
  57         CHAN2G(2462, 10), /* Channel 11 */
  58         CHAN2G(2467, 11), /* Channel 12 */
  59         CHAN2G(2472, 12), /* Channel 13 */
  60         CHAN2G(2484, 13), /* Channel 14 */
  61 };
  62
  63 static struct ieee80211_channel ath9k_5ghz_channels[] = {
  64         /* _We_ call this UNII 1 */
  65         CHAN5G(5180, 14), /* Channel 36 */
  66         CHAN5G(5200, 15), /* Channel 40 */
  67         CHAN5G(5220, 16), /* Channel 44 */
  68         CHAN5G(5240, 17), /* Channel 48 */
  69         /* _We_ call this UNII 2 */
  70         CHAN5G(5260, 18), /* Channel 52 */
  71         CHAN5G(5280, 19), /* Channel 56 */
  72         CHAN5G(5300, 20), /* Channel 60 */
  73         CHAN5G(5320, 21), /* Channel 64 */
  74         /* _We_ call this "Middle band" */
  75         CHAN5G(5500, 22), /* Channel 100 */
  76         CHAN5G(5520, 23), /* Channel 104 */
  77         CHAN5G(5540, 24), /* Channel 108 */
  78         CHAN5G(5560, 25), /* Channel 112 */
  79         CHAN5G(5580, 26), /* Channel 116 */
  80         CHAN5G(5600, 27), /* Channel 120 */
  81         CHAN5G(5620, 28), /* Channel 124 */
  82         CHAN5G(5640, 29), /* Channel 128 */
  83         CHAN5G(5660, 30), /* Channel 132 */
  84         CHAN5G(5680, 31), /* Channel 136 */
  85         CHAN5G(5700, 32), /* Channel 140 */
  86         /* _We_ call this UNII 3 */
  87         CHAN5G(5745, 33), /* Channel 149 */
  88         CHAN5G(5765, 34), /* Channel 153 */
  89         CHAN5G(5785, 35), /* Channel 157 */
  90         CHAN5G(5805, 36), /* Channel 161 */
  91         CHAN5G(5825, 37), /* Channel 165 */
  92 };
  93
  94 /* Atheros hardware rate code addition for short premble */
  95 #define SHPCHECK(__hw_rate, __flags) \
  96         ((__flags & IEEE80211_RATE_SHORT_PREAMBLE) ? (__hw_rate | 0x04) : 0)
  97
  98 #define RATE(_bitrate, _hw_rate, _flags) {              \
  99         .bitrate        = (_bitrate),                   \
 100         .flags          = (_flags),                     \
 101         .hw_value       = (_hw_rate),                   \
 102         .hw_value_short = (SHPCHECK(_hw_rate, _flags))  \
 103 }
 104
 105 static struct ieee80211_rate ath9k_legacy_rates[] = {
 106         RATE(10, 0x1b, 0),
 107         RATE(20, 0x1a, IEEE80211_RATE_SHORT_PREAMBLE), /* shortp : 0x1e */
 108         RATE(55, 0x19, IEEE80211_RATE_SHORT_PREAMBLE), /* shortp: 0x1d */
 109         RATE(110, 0x18, IEEE80211_RATE_SHORT_PREAMBLE), /* short: 0x1c */
 110         RATE(60, 0x0b, 0),
 111         RATE(90, 0x0f, 0),
 112         RATE(120, 0x0a, 0),
 113         RATE(180, 0x0e, 0),
 114         RATE(240, 0x09, 0),
 115         RATE(360, 0x0d, 0),
 116         RATE(480, 0x08, 0),
 117         RATE(540, 0x0c, 0),
 118 };
 119
 120 static int ath9k_htc_wait_for_target(struct ath9k_htc_priv *priv)
 121 {
 122         int time_left;
 123
 124         if (atomic_read(&priv->htc->tgt_ready) > 0) {
 125                 atomic_dec(&priv->htc->tgt_ready);
 126                 return 0;
 127         }
 128
 129         /* Firmware can take up to 50ms to get ready, to be safe use 1 second */
 130         time_left = wait_for_completion_timeout(&priv->htc->target_wait, HZ);
 131         if (!time_left) {
 132                 dev_err(priv->dev, "ath9k_htc: Target is unresponsive\n");
 133                 return -ETIMEDOUT;
 134         }
 135
 136         atomic_dec(&priv->htc->tgt_ready);
 137
 138         return 0;
 139 }
 140
 141 static void ath9k_deinit_priv(struct ath9k_htc_priv *priv)
 142 {
 143         ath9k_htc_exit_debug(priv->ah);
 144         ath9k_hw_deinit(priv->ah);
 145         kfree(priv->ah);
 146         priv->ah = NULL;
 147 }
 148
 149 static void ath9k_deinit_device(struct ath9k_htc_priv *priv)
 150 {
 151         struct ieee80211_hw *hw = priv->hw;
 152
 153         wiphy_rfkill_stop_polling(hw->wiphy);
 154         ath9k_deinit_leds(priv);
 155         ieee80211_unregister_hw(hw);
 156         ath9k_rx_cleanup(priv);
 157         ath9k_tx_cleanup(priv);
 158         ath9k_deinit_priv(priv);
 159 }
 160
 161 static inline int ath9k_htc_connect_svc(struct ath9k_htc_priv *priv,
 162                                         u16 service_id,
 163                                         void (*tx) (void *,
 164                                                     struct sk_buff *,
 165                                                     enum htc_endpoint_id,
 166                                                     bool txok),
 167                                         enum htc_endpoint_id *ep_id)
 168 {
 169         struct htc_service_connreq req;
 170
 171         memset(&req, 0, sizeof(struct htc_service_connreq));
 172
 173         req.service_id = service_id;
 174         req.ep_callbacks.priv = priv;
 175         req.ep_callbacks.rx = ath9k_htc_rxep;
 176         req.ep_callbacks.tx = tx;
 177
 178         return htc_connect_service(priv->htc, &req, ep_id);
 179 }
 180
 181 static int ath9k_init_htc_services(struct ath9k_htc_priv *priv, u16 devid,
 182                                    u32 drv_info)
 183 {
 184         int ret;
 185
 186         /* WMI CMD*/
 187         ret = ath9k_wmi_connect(priv->htc, priv->wmi, &priv->wmi_cmd_ep);
 188         if (ret)
 189                 goto err;
 190
 191         /* Beacon */
 192         ret = ath9k_htc_connect_svc(priv, WMI_BEACON_SVC, ath9k_htc_beaconep,
 193                                     &priv->beacon_ep);
 194         if (ret)
 195                 goto err;
 196
 197         /* CAB */
 198         ret = ath9k_htc_connect_svc(priv, WMI_CAB_SVC, ath9k_htc_txep,
 199                                     &priv->cab_ep);
 200         if (ret)
 201                 goto err;
 202
 203
 204         /* UAPSD */
 205         ret = ath9k_htc_connect_svc(priv, WMI_UAPSD_SVC, ath9k_htc_txep,
 206                                     &priv->uapsd_ep);
 207         if (ret)
 208                 goto err;
 209
 210         /* MGMT */
 211         ret = ath9k_htc_connect_svc(priv, WMI_MGMT_SVC, ath9k_htc_txep,
 212                                     &priv->mgmt_ep);
 213         if (ret)
 214                 goto err;
 215
 216         /* DATA BE */
 217         ret = ath9k_htc_connect_svc(priv, WMI_DATA_BE_SVC, ath9k_htc_txep,
 218                                     &priv->data_be_ep);
 219         if (ret)
 220                 goto err;
 221
 222         /* DATA BK */
 223         ret = ath9k_htc_connect_svc(priv, WMI_DATA_BK_SVC, ath9k_htc_txep,
 224                                     &priv->data_bk_ep);
 225         if (ret)
 226                 goto err;
 227
 228         /* DATA VI */
 229         ret = ath9k_htc_connect_svc(priv, WMI_DATA_VI_SVC, ath9k_htc_txep,
 230                                     &priv->data_vi_ep);
 231         if (ret)
 232                 goto err;
 233
 234         /* DATA VO */
 235         ret = ath9k_htc_connect_svc(priv, WMI_DATA_VO_SVC, ath9k_htc_txep,
 236                                     &priv->data_vo_ep);
 237         if (ret)
 238                 goto err;
 239
 240         /*
 241          * Setup required credits before initializing HTC.
 242          * This is a bit hacky, but, since queuing is done in
 243          * the HIF layer, shouldn't matter much.
 244          */
 245
 246         if (IS_AR7010_DEVICE(drv_info))
 247                 priv->htc->credits = 45;
 248         else
 249                 priv->htc->credits = 33;
 250
 251         ret = htc_init(priv->htc);
 252         if (ret)
 253                 goto err;
 254
 255         dev_info(priv->dev, "ath9k_htc: HTC initialized with %d credits\n",
 256                  priv->htc->credits);
 257
 258         return 0;
 259
 260 err:
 261         dev_err(priv->dev, "ath9k_htc: Unable to initialize HTC services\n");
 262         return ret;
 263 }
 264
 265 static int ath9k_reg_notifier(struct wiphy *wiphy,
 266                               struct regulatory_request *request)
 267 {
 268         struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
 269         struct ath9k_htc_priv *priv = hw->priv;
 270
 271         return ath_reg_notifier_apply(wiphy, request,
 272                                       ath9k_hw_regulatory(priv->ah));
 273 }
 274
 275 static unsigned int ath9k_regread(void *hw_priv, u32 reg_offset)
 276 {
 277         struct ath_hw *ah = (struct ath_hw *) hw_priv;
 278         struct ath_common *common = ath9k_hw_common(ah);
 279         struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
 280         __be32 val, reg = cpu_to_be32(reg_offset);
 281         int r;
 282
 283         r = ath9k_wmi_cmd(priv->wmi, WMI_REG_READ_CMDID,
 284                           (u8 *) &reg, sizeof(reg),
 285                           (u8 *) &val, sizeof(val),
 286                           100);
 287         if (unlikely(r)) {
 288                 ath_dbg(common, ATH_DBG_WMI,
 289                         "REGISTER READ FAILED: (0x%04x, %d)\n",
 290                         reg_offset, r);
 291                 return -EIO;
 292         }
 293
 294         return be32_to_cpu(val);
 295 }
 296
 297 static void ath9k_regwrite_single(void *hw_priv, u32 val, u32 reg_offset)
 298 {
 299         struct ath_hw *ah = (struct ath_hw *) hw_priv;
 300         struct ath_common *common = ath9k_hw_common(ah);
 301         struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
 302         const __be32 buf[2] = {
 303                 cpu_to_be32(reg_offset),
 304                 cpu_to_be32(val),
 305         };
 306         int r;
 307
 308         r = ath9k_wmi_cmd(priv->wmi, WMI_REG_WRITE_CMDID,
 309                           (u8 *) &buf, sizeof(buf),
 310                           (u8 *) &val, sizeof(val),
 311                           100);
 312         if (unlikely(r)) {
 313                 ath_dbg(common, ATH_DBG_WMI,
 314                         "REGISTER WRITE FAILED:(0x%04x, %d)\n",
 315                         reg_offset, r);
 316         }
 317 }
 318
 319 static void ath9k_regwrite_buffer(void *hw_priv, u32 val, u32 reg_offset)
 320 {
 321         struct ath_hw *ah = (struct ath_hw *) hw_priv;
 322         struct ath_common *common = ath9k_hw_common(ah);
 323         struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
 324         u32 rsp_status;
 325         int r;
 326
 327         mutex_lock(&priv->wmi->multi_write_mutex);
 328
 329         /* Store the register/value */
 330         priv->wmi->multi_write[priv->wmi->multi_write_idx].reg =
 331                 cpu_to_be32(reg_offset);
 332         priv->wmi->multi_write[priv->wmi->multi_write_idx].val =
 333                 cpu_to_be32(val);
 334
 335         priv->wmi->multi_write_idx++;
 336
 337         /* If the buffer is full, send it out. */
 338         if (priv->wmi->multi_write_idx == MAX_CMD_NUMBER) {
 339                 r = ath9k_wmi_cmd(priv->wmi, WMI_REG_WRITE_CMDID,
 340                           (u8 *) &priv->wmi->multi_write,
 341                           sizeof(struct register_write) * priv->wmi->multi_write_idx,
 342                           (u8 *) &rsp_status, sizeof(rsp_status),
 343                           100);
 344                 if (unlikely(r)) {
 345                         ath_dbg(common, ATH_DBG_WMI,
 346                                 "REGISTER WRITE FAILED, multi len: %d\n",
 347                                 priv->wmi->multi_write_idx);
 348                 }
 349                 priv->wmi->multi_write_idx = 0;
 350         }
 351
 352         mutex_unlock(&priv->wmi->multi_write_mutex);
 353 }
 354
 355 static void ath9k_regwrite(void *hw_priv, u32 val, u32 reg_offset)
 356 {
 357         struct ath_hw *ah = (struct ath_hw *) hw_priv;
 358         struct ath_common *common = ath9k_hw_common(ah);
 359         struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
 360
 361         if (atomic_read(&priv->wmi->mwrite_cnt))
 362                 ath9k_regwrite_buffer(hw_priv, val, reg_offset);
 363         else
 364                 ath9k_regwrite_single(hw_priv, val, reg_offset);
 365 }
 366
 367 static void ath9k_enable_regwrite_buffer(void *hw_priv)
 368 {
 369         struct ath_hw *ah = (struct ath_hw *) hw_priv;
 370         struct ath_common *common = ath9k_hw_common(ah);
 371         struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
 372
 373         atomic_inc(&priv->wmi->mwrite_cnt);
 374 }
 375
 376 static void ath9k_regwrite_flush(void *hw_priv)
 377 {
 378         struct ath_hw *ah = (struct ath_hw *) hw_priv;
 379         struct ath_common *common = ath9k_hw_common(ah);
 380         struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
 381         u32 rsp_status;
 382         int r;
 383
 384         atomic_dec(&priv->wmi->mwrite_cnt);
 385
 386         mutex_lock(&priv->wmi->multi_write_mutex);
 387
 388         if (priv->wmi->multi_write_idx) {
 389                 r = ath9k_wmi_cmd(priv->wmi, WMI_REG_WRITE_CMDID,
 390                           (u8 *) &priv->wmi->multi_write,
 391                           sizeof(struct register_write) * priv->wmi->multi_write_idx,
 392                           (u8 *) &rsp_status, sizeof(rsp_status),
 393                           100);
 394                 if (unlikely(r)) {
 395                         ath_dbg(common, ATH_DBG_WMI,
 396                                 "REGISTER WRITE FAILED, multi len: %d\n",
 397                                 priv->wmi->multi_write_idx);
 398                 }
 399                 priv->wmi->multi_write_idx = 0;
 400         }
 401
 402         mutex_unlock(&priv->wmi->multi_write_mutex);
 403 }
 404
 405 static const struct ath_ops ath9k_common_ops = {
 406         .read = ath9k_regread,
 407         .write = ath9k_regwrite,
 408         .enable_write_buffer = ath9k_enable_regwrite_buffer,
 409         .write_flush = ath9k_regwrite_flush,
 410 };
 411
 412 static void ath_usb_read_cachesize(struct ath_common *common, int *csz)
 413 {
 414         *csz = L1_CACHE_BYTES >> 2;
 415 }
 416
 417 static bool ath_usb_eeprom_read(struct ath_common *common, u32 off, u16 *data)
 418 {
 419         struct ath_hw *ah = (struct ath_hw *) common->ah;
 420
 421         (void)REG_READ(ah, AR5416_EEPROM_OFFSET + (off << AR5416_EEPROM_S));
 422
 423         if (!ath9k_hw_wait(ah,
 424                            AR_EEPROM_STATUS_DATA,
 425                            AR_EEPROM_STATUS_DATA_BUSY |
 426                            AR_EEPROM_STATUS_DATA_PROT_ACCESS, 0,
 427                            AH_WAIT_TIMEOUT))
 428                 return false;
 429
 430         *data = MS(REG_READ(ah, AR_EEPROM_STATUS_DATA),
 431                    AR_EEPROM_STATUS_DATA_VAL);
 432
 433         return true;
 434 }
 435
 436 static const struct ath_bus_ops ath9k_usb_bus_ops = {
 437         .ath_bus_type = ATH_USB,
 438         .read_cachesize = ath_usb_read_cachesize,
 439         .eeprom_read = ath_usb_eeprom_read,
 440 };
 441
 442 static void setup_ht_cap(struct ath9k_htc_priv *priv,
 443                          struct ieee80211_sta_ht_cap *ht_info)
 444 {
 445         struct ath_common *common = ath9k_hw_common(priv->ah);
 446         u8 tx_streams, rx_streams;
 447         int i;
 448
 449         ht_info->ht_supported = true;
 450         ht_info->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
 451                        IEEE80211_HT_CAP_SM_PS |
 452                        IEEE80211_HT_CAP_SGI_40 |
 453                        IEEE80211_HT_CAP_DSSSCCK40;
 454
 455         if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_SGI_20)
 456                 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
 457
 458         ht_info->cap |= (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
 459
 460         ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
 461         ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_8;
 462
 463         memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
 464
 465         /* ath9k_htc supports only 1 or 2 stream devices */
 466         tx_streams = ath9k_cmn_count_streams(common->tx_chainmask, 2);
 467         rx_streams = ath9k_cmn_count_streams(common->rx_chainmask, 2);
 468
 469         ath_dbg(common, ATH_DBG_CONFIG,
 470                 "TX streams %d, RX streams: %d\n",
 471                 tx_streams, rx_streams);
 472
 473         if (tx_streams != rx_streams) {
 474                 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
 475                 ht_info->mcs.tx_params |= ((tx_streams - 1) <<
 476                                            IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
 477         }
 478
 479         for (i = 0; i < rx_streams; i++)
 480                 ht_info->mcs.rx_mask[i] = 0xff;
 481
 482         ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_DEFINED;
 483 }
 484
 485 static int ath9k_init_queues(struct ath9k_htc_priv *priv)
 486 {
 487         struct ath_common *common = ath9k_hw_common(priv->ah);
 488         int i;
 489
 490         for (i = 0; i < ARRAY_SIZE(priv->hwq_map); i++)
 491                 priv->hwq_map[i] = -1;
 492
 493         priv->beaconq = ath9k_hw_beaconq_setup(priv->ah);
 494         if (priv->beaconq == -1) {
 495                 ath_err(common, "Unable to setup BEACON xmit queue\n");
 496                 goto err;
 497         }
 498
 499         priv->cabq = ath9k_htc_cabq_setup(priv);
 500         if (priv->cabq == -1) {
 501                 ath_err(common, "Unable to setup CAB xmit queue\n");
 502                 goto err;
 503         }
 504
 505         if (!ath9k_htc_txq_setup(priv, WME_AC_BE)) {
 506                 ath_err(common, "Unable to setup xmit queue for BE traffic\n");
 507                 goto err;
 508         }
 509
 510         if (!ath9k_htc_txq_setup(priv, WME_AC_BK)) {
 511                 ath_err(common, "Unable to setup xmit queue for BK traffic\n");
 512                 goto err;
 513         }
 514         if (!ath9k_htc_txq_setup(priv, WME_AC_VI)) {
 515                 ath_err(common, "Unable to setup xmit queue for VI traffic\n");
 516                 goto err;
 517         }
 518         if (!ath9k_htc_txq_setup(priv, WME_AC_VO)) {
 519                 ath_err(common, "Unable to setup xmit queue for VO traffic\n");
 520                 goto err;
 521         }
 522
 523         return 0;
 524
 525 err:
 526         return -EINVAL;
 527 }
 528
 529 static void ath9k_init_crypto(struct ath9k_htc_priv *priv)
 530 {
 531         struct ath_common *common = ath9k_hw_common(priv->ah);
 532         int i = 0;
 533
 534         /* Get the hardware key cache size. */
 535         common->keymax = priv->ah->caps.keycache_size;
 536         if (common->keymax > ATH_KEYMAX) {
 537                 ath_dbg(common, ATH_DBG_ANY,
 538                         "Warning, using only %u entries in %u key cache\n",
 539                         ATH_KEYMAX, common->keymax);
 540                 common->keymax = ATH_KEYMAX;
 541         }
 542
 543         if (priv->ah->misc_mode & AR_PCU_MIC_NEW_LOC_ENA)
 544                 common->crypt_caps |= ATH_CRYPT_CAP_MIC_COMBINED;
 545
 546         /*
 547          * Reset the key cache since some parts do not
 548          * reset the contents on initial power up.
 549          */
 550         for (i = 0; i < common->keymax; i++)
 551                 ath_hw_keyreset(common, (u16) i);
 552 }
 553
 554 static void ath9k_init_channels_rates(struct ath9k_htc_priv *priv)
 555 {
 556         if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ) {
 557                 priv->sbands[IEEE80211_BAND_2GHZ].channels =
 558                         ath9k_2ghz_channels;
 559                 priv->sbands[IEEE80211_BAND_2GHZ].band = IEEE80211_BAND_2GHZ;
 560                 priv->sbands[IEEE80211_BAND_2GHZ].n_channels =
 561                         ARRAY_SIZE(ath9k_2ghz_channels);
 562                 priv->sbands[IEEE80211_BAND_2GHZ].bitrates = ath9k_legacy_rates;
 563                 priv->sbands[IEEE80211_BAND_2GHZ].n_bitrates =
 564                         ARRAY_SIZE(ath9k_legacy_rates);
 565         }
 566
 567         if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ) {
 568                 priv->sbands[IEEE80211_BAND_5GHZ].channels = ath9k_5ghz_channels;
 569                 priv->sbands[IEEE80211_BAND_5GHZ].band = IEEE80211_BAND_5GHZ;
 570                 priv->sbands[IEEE80211_BAND_5GHZ].n_channels =
 571                         ARRAY_SIZE(ath9k_5ghz_channels);
 572                 priv->sbands[IEEE80211_BAND_5GHZ].bitrates =
 573                         ath9k_legacy_rates + 4;
 574                 priv->sbands[IEEE80211_BAND_5GHZ].n_bitrates =
 575                         ARRAY_SIZE(ath9k_legacy_rates) - 4;
 576         }
 577 }
 578
 579 static void ath9k_init_misc(struct ath9k_htc_priv *priv)
 580 {
 581         struct ath_common *common = ath9k_hw_common(priv->ah);
 582
 583         common->tx_chainmask = priv->ah->caps.tx_chainmask;
 584         common->rx_chainmask = priv->ah->caps.rx_chainmask;
 585
 586         memcpy(common->bssidmask, ath_bcast_mac, ETH_ALEN);
 587
 588         priv->ah->opmode = NL80211_IFTYPE_STATION;
 589 }
 590
 591 static void ath9k_init_btcoex(struct ath9k_htc_priv *priv)
 592 {
 593         int qnum;
 594
 595         switch (priv->ah->btcoex_hw.scheme) {
 596         case ATH_BTCOEX_CFG_NONE:
 597                 break;
 598         case ATH_BTCOEX_CFG_3WIRE:
 599                 priv->ah->btcoex_hw.btactive_gpio = 7;
 600                 priv->ah->btcoex_hw.btpriority_gpio = 6;
 601                 priv->ah->btcoex_hw.wlanactive_gpio = 8;
 602                 priv->btcoex.bt_stomp_type = ATH_BTCOEX_STOMP_LOW;
 603                 ath9k_hw_btcoex_init_3wire(priv->ah);
 604                 ath_htc_init_btcoex_work(priv);
 605                 qnum = priv->hwq_map[WME_AC_BE];
 606                 ath9k_hw_init_btcoex_hw(priv->ah, qnum);
 607                 break;
 608         default:
 609                 WARN_ON(1);
 610                 break;
 611         }
 612 }
 613
 614 static int ath9k_init_priv(struct ath9k_htc_priv *priv,
 615                            u16 devid, char *product,
 616                            u32 drv_info)
 617 {
 618         struct ath_hw *ah = NULL;
 619         struct ath_common *common;
 620         int ret = 0, csz = 0;
 621
 622         priv->op_flags |= OP_INVALID;
 623
 624         ah = kzalloc(sizeof(struct ath_hw), GFP_KERNEL);
 625         if (!ah)
 626                 return -ENOMEM;
 627
 628         ah->hw_version.devid = devid;
 629         ah->hw_version.subsysid = 0; /* FIXME */
 630         ah->hw_version.usbdev = drv_info;
 631         ah->ah_flags |= AH_USE_EEPROM;
 632         priv->ah = ah;
 633
 634         common = ath9k_hw_common(ah);
 635         common->ops = &ath9k_common_ops;
 636         common->bus_ops = &ath9k_usb_bus_ops;
 637         common->ah = ah;
 638         common->hw = priv->hw;
 639         common->priv = priv;
 640         common->debug_mask = ath9k_debug;
 641
 642         spin_lock_init(&priv->wmi->wmi_lock);
 643         spin_lock_init(&priv->beacon_lock);
 644         spin_lock_init(&priv->tx_lock);
 645         mutex_init(&priv->mutex);
 646         mutex_init(&priv->htc_pm_lock);
 647         tasklet_init(&priv->swba_tasklet, ath9k_swba_tasklet,
 648                      (unsigned long)priv);
 649         tasklet_init(&priv->rx_tasklet, ath9k_rx_tasklet,
 650                      (unsigned long)priv);
 651         tasklet_init(&priv->tx_tasklet, ath9k_tx_tasklet,
 652                      (unsigned long)priv);
 653         INIT_DELAYED_WORK(&priv->ath9k_ani_work, ath9k_ani_work);
 654         INIT_WORK(&priv->ps_work, ath9k_ps_work);
 655         INIT_WORK(&priv->fatal_work, ath9k_fatal_work);
 656
 657         /*
 658          * Cache line size is used to size and align various
 659          * structures used to communicate with the hardware.
 660          */
 661         ath_read_cachesize(common, &csz);
 662         common->cachelsz = csz << 2; /* convert to bytes */
 663
 664         ret = ath9k_hw_init(ah);
 665         if (ret) {
 666                 ath_err(common,
 667                         "Unable to initialize hardware; initialization status: %d\n",
 668                         ret);
 669                 goto err_hw;
 670         }
 671
 672         ret = ath9k_htc_init_debug(ah);
 673         if (ret) {
 674                 ath_err(common, "Unable to create debugfs files\n");
 675                 goto err_debug;
 676         }
 677
 678         ret = ath9k_init_queues(priv);
 679         if (ret)
 680                 goto err_queues;
 681
 682         ath9k_init_crypto(priv);
 683         ath9k_init_channels_rates(priv);
 684         ath9k_init_misc(priv);
 685
 686         if (product && strncmp(product, ATH_HTC_BTCOEX_PRODUCT_ID, 5) == 0) {
 687                 ah->btcoex_hw.scheme = ATH_BTCOEX_CFG_3WIRE;
 688                 ath9k_init_btcoex(priv);
 689         }
 690
 691         return 0;
 692
 693 err_queues:
 694         ath9k_htc_exit_debug(ah);
 695 err_debug:
 696         ath9k_hw_deinit(ah);
 697 err_hw:
 698
 699         kfree(ah);
 700         priv->ah = NULL;
 701
 702         return ret;
 703 }
 704
 705 static void ath9k_set_hw_capab(struct ath9k_htc_priv *priv,
 706                                struct ieee80211_hw *hw)
 707 {
 708         struct ath_common *common = ath9k_hw_common(priv->ah);
 709
 710         hw->flags = IEEE80211_HW_SIGNAL_DBM |
 711                 IEEE80211_HW_AMPDU_AGGREGATION |
 712                 IEEE80211_HW_SPECTRUM_MGMT |
 713                 IEEE80211_HW_HAS_RATE_CONTROL |
 714                 IEEE80211_HW_RX_INCLUDES_FCS |
 715                 IEEE80211_HW_SUPPORTS_PS |
 716                 IEEE80211_HW_PS_NULLFUNC_STACK;
 717
 718         hw->wiphy->interface_modes =
 719                 BIT(NL80211_IFTYPE_STATION) |
 720                 BIT(NL80211_IFTYPE_ADHOC);
 721
 722         hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
 723
 724         hw->queues = 4;
 725         hw->channel_change_time = 5000;
 726         hw->max_listen_interval = 10;
 727         hw->vif_data_size = sizeof(struct ath9k_htc_vif);
 728         hw->sta_data_size = sizeof(struct ath9k_htc_sta);
 729
 730         /* tx_frame_hdr is larger than tx_mgmt_hdr anyway */
 731         hw->extra_tx_headroom = sizeof(struct tx_frame_hdr) +
 732                 sizeof(struct htc_frame_hdr) + 4;
 733
 734         if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ)
 735                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
 736                         &priv->sbands[IEEE80211_BAND_2GHZ];
 737         if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ)
 738                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
 739                         &priv->sbands[IEEE80211_BAND_5GHZ];
 740
 741         if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_HT) {
 742                 if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ)
 743                         setup_ht_cap(priv,
 744                                      &priv->sbands[IEEE80211_BAND_2GHZ].ht_cap);
 745                 if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ)
 746                         setup_ht_cap(priv,
 747                                      &priv->sbands[IEEE80211_BAND_5GHZ].ht_cap);
 748         }
 749
 750         SET_IEEE80211_PERM_ADDR(hw, common->macaddr);
 751 }
 752
 753 static int ath9k_init_device(struct ath9k_htc_priv *priv,
 754                              u16 devid, char *product, u32 drv_info)
 755 {
 756         struct ieee80211_hw *hw = priv->hw;
 757         struct ath_common *common;
 758         struct ath_hw *ah;
 759         int error = 0;
 760         struct ath_regulatory *reg;
 761
 762         /* Bring up device */
 763         error = ath9k_init_priv(priv, devid, product, drv_info);
 764         if (error != 0)
 765                 goto err_init;
 766
 767         ah = priv->ah;
 768         common = ath9k_hw_common(ah);
 769         ath9k_set_hw_capab(priv, hw);
 770
 771         /* Initialize regulatory */
 772         error = ath_regd_init(&common->regulatory, priv->hw->wiphy,
 773                               ath9k_reg_notifier);
 774         if (error)
 775                 goto err_regd;
 776
 777         reg = &common->regulatory;
 778
 779         /* Setup TX */
 780         error = ath9k_tx_init(priv);
 781         if (error != 0)
 782                 goto err_tx;
 783
 784         /* Setup RX */
 785         error = ath9k_rx_init(priv);
 786         if (error != 0)
 787                 goto err_rx;
 788
 789         /* Register with mac80211 */
 790         error = ieee80211_register_hw(hw);
 791         if (error)
 792                 goto err_register;
 793
 794         /* Handle world regulatory */
 795         if (!ath_is_world_regd(reg)) {
 796                 error = regulatory_hint(hw->wiphy, reg->alpha2);
 797                 if (error)
 798                         goto err_world;
 799         }
 800
 801         ath9k_init_leds(priv);
 802         ath9k_start_rfkill_poll(priv);
 803
 804         return 0;
 805
 806 err_world:
 807         ieee80211_unregister_hw(hw);
 808 err_register:
 809         ath9k_rx_cleanup(priv);
 810 err_rx:
 811         ath9k_tx_cleanup(priv);
 812 err_tx:
 813         /* Nothing */
 814 err_regd:
 815         ath9k_deinit_priv(priv);
 816 err_init:
 817         return error;
 818 }
 819
 820 int ath9k_htc_probe_device(struct htc_target *htc_handle, struct device *dev,
 821                            u16 devid, char *product, u32 drv_info)
 822 {
 823         struct ieee80211_hw *hw;
 824         struct ath9k_htc_priv *priv;
 825         int ret;
 826
 827         hw = ieee80211_alloc_hw(sizeof(struct ath9k_htc_priv), &ath9k_htc_ops);
 828         if (!hw)
 829                 return -ENOMEM;
 830
 831         priv = hw->priv;
 832         priv->hw = hw;
 833         priv->htc = htc_handle;
 834         priv->dev = dev;
 835         htc_handle->drv_priv = priv;
 836         SET_IEEE80211_DEV(hw, priv->dev);
 837
 838         ret = ath9k_htc_wait_for_target(priv);
 839         if (ret)
 840                 goto err_free;
 841
 842         priv->wmi = ath9k_init_wmi(priv);
 843         if (!priv->wmi) {
 844                 ret = -EINVAL;
 845                 goto err_free;
 846         }
 847
 848         ret = ath9k_init_htc_services(priv, devid, drv_info);
 849         if (ret)
 850                 goto err_init;
 851
 852         ret = ath9k_init_device(priv, devid, product, drv_info);
 853         if (ret)
 854                 goto err_init;
 855
 856         return 0;
 857
 858 err_init:
 859         ath9k_deinit_wmi(priv);
 860 err_free:
 861         ieee80211_free_hw(hw);
 862         return ret;
 863 }
 864
 865 void ath9k_htc_disconnect_device(struct htc_target *htc_handle, bool hotunplug)
 866 {
 867         if (htc_handle->drv_priv) {
 868
 869                 /* Check if the device has been yanked out. */
 870                 if (hotunplug)
 871                         htc_handle->drv_priv->ah->ah_flags |= AH_UNPLUGGED;
 872
 873                 ath9k_deinit_device(htc_handle->drv_priv);
 874                 ath9k_deinit_wmi(htc_handle->drv_priv);
 875                 ieee80211_free_hw(htc_handle->drv_priv->hw);
 876         }
 877 }
 878
 879 #ifdef CONFIG_PM
 880
 881 void ath9k_htc_suspend(struct htc_target *htc_handle)
 882 {
 883         ath9k_htc_setpower(htc_handle->drv_priv, ATH9K_PM_FULL_SLEEP);
 884 }
 885
 886 int ath9k_htc_resume(struct htc_target *htc_handle)
 887 {
 888         struct ath9k_htc_priv *priv = htc_handle->drv_priv;
 889         int ret;
 890
 891         ret = ath9k_htc_wait_for_target(priv);
 892         if (ret)
 893                 return ret;
 894
 895         ret = ath9k_init_htc_services(priv, priv->ah->hw_version.devid,
 896                                       priv->ah->hw_version.usbdev);
 897         return ret;
 898 }
 899 #endif
 900
 901 static int __init ath9k_htc_init(void)
 902 {
 903         int error;
 904
 905         error = ath9k_htc_debug_create_root();
 906         if (error < 0) {
 907                 printk(KERN_ERR
 908                         "ath9k_htc: Unable to create debugfs root: %d\n",
 909                         error);
 910                 goto err_dbg;
 911         }
 912
 913         error = ath9k_hif_usb_init();
 914         if (error < 0) {
 915                 printk(KERN_ERR
 916                         "ath9k_htc: No USB devices found,"
 917                         " driver not installed.\n");
 918                 error = -ENODEV;
 919                 goto err_usb;
 920         }
 921
 922         return 0;
 923
 924 err_usb:
 925         ath9k_htc_debug_remove_root();
 926 err_dbg:
 927         return error;
 928 }
 929 module_init(ath9k_htc_init);
 930
 931 static void __exit ath9k_htc_exit(void)
 932 {
 933         ath9k_hif_usb_exit();
 934         ath9k_htc_debug_remove_root();
 935         printk(KERN_INFO "ath9k_htc: Driver unloaded\n");
 936 }
 937 module_exit(ath9k_htc_exit);