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         tasklet_kill(&priv->wmi_tasklet);
 146         tasklet_kill(&priv->rx_tasklet);
 147         tasklet_kill(&priv->tx_tasklet);
 148         kfree(priv->ah);
 149         priv->ah = NULL;
 150 }
 151
 152 static void ath9k_deinit_device(struct ath9k_htc_priv *priv)
 153 {
 154         struct ieee80211_hw *hw = priv->hw;
 155
 156         wiphy_rfkill_stop_polling(hw->wiphy);
 157         ath9k_deinit_leds(priv);
 158         ieee80211_unregister_hw(hw);
 159         ath9k_rx_cleanup(priv);
 160         ath9k_tx_cleanup(priv);
 161         ath9k_deinit_priv(priv);
 162 }
 163
 164 static inline int ath9k_htc_connect_svc(struct ath9k_htc_priv *priv,
 165                                         u16 service_id,
 166                                         void (*tx) (void *,
 167                                                     struct sk_buff *,
 168                                                     enum htc_endpoint_id,
 169                                                     bool txok),
 170                                         enum htc_endpoint_id *ep_id)
 171 {
 172         struct htc_service_connreq req;
 173
 174         memset(&req, 0, sizeof(struct htc_service_connreq));
 175
 176         req.service_id = service_id;
 177         req.ep_callbacks.priv = priv;
 178         req.ep_callbacks.rx = ath9k_htc_rxep;
 179         req.ep_callbacks.tx = tx;
 180
 181         return htc_connect_service(priv->htc, &req, ep_id);
 182 }
 183
 184 static int ath9k_init_htc_services(struct ath9k_htc_priv *priv, u16 devid)
 185 {
 186         int ret;
 187
 188         /* WMI CMD*/
 189         ret = ath9k_wmi_connect(priv->htc, priv->wmi, &priv->wmi_cmd_ep);
 190         if (ret)
 191                 goto err;
 192
 193         /* Beacon */
 194         ret = ath9k_htc_connect_svc(priv, WMI_BEACON_SVC, ath9k_htc_beaconep,
 195                                     &priv->beacon_ep);
 196         if (ret)
 197                 goto err;
 198
 199         /* CAB */
 200         ret = ath9k_htc_connect_svc(priv, WMI_CAB_SVC, ath9k_htc_txep,
 201                                     &priv->cab_ep);
 202         if (ret)
 203                 goto err;
 204
 205
 206         /* UAPSD */
 207         ret = ath9k_htc_connect_svc(priv, WMI_UAPSD_SVC, ath9k_htc_txep,
 208                                     &priv->uapsd_ep);
 209         if (ret)
 210                 goto err;
 211
 212         /* MGMT */
 213         ret = ath9k_htc_connect_svc(priv, WMI_MGMT_SVC, ath9k_htc_txep,
 214                                     &priv->mgmt_ep);
 215         if (ret)
 216                 goto err;
 217
 218         /* DATA BE */
 219         ret = ath9k_htc_connect_svc(priv, WMI_DATA_BE_SVC, ath9k_htc_txep,
 220                                     &priv->data_be_ep);
 221         if (ret)
 222                 goto err;
 223
 224         /* DATA BK */
 225         ret = ath9k_htc_connect_svc(priv, WMI_DATA_BK_SVC, ath9k_htc_txep,
 226                                     &priv->data_bk_ep);
 227         if (ret)
 228                 goto err;
 229
 230         /* DATA VI */
 231         ret = ath9k_htc_connect_svc(priv, WMI_DATA_VI_SVC, ath9k_htc_txep,
 232                                     &priv->data_vi_ep);
 233         if (ret)
 234                 goto err;
 235
 236         /* DATA VO */
 237         ret = ath9k_htc_connect_svc(priv, WMI_DATA_VO_SVC, ath9k_htc_txep,
 238                                     &priv->data_vo_ep);
 239         if (ret)
 240                 goto err;
 241
 242         /*
 243          * Setup required credits before initializing HTC.
 244          * This is a bit hacky, but, since queuing is done in
 245          * the HIF layer, shouldn't matter much.
 246          */
 247
 248         switch(devid) {
 249         case 0x7010:
 250         case 0x7015:
 251         case 0x9018:
 252                 priv->htc->credits = 45;
 253                 break;
 254         default:
 255                 priv->htc->credits = 33;
 256         }
 257
 258         ret = htc_init(priv->htc);
 259         if (ret)
 260                 goto err;
 261
 262         dev_info(priv->dev, "ath9k_htc: HTC initialized with %d credits\n",
 263                  priv->htc->credits);
 264
 265         return 0;
 266
 267 err:
 268         dev_err(priv->dev, "ath9k_htc: Unable to initialize HTC services\n");
 269         return ret;
 270 }
 271
 272 static int ath9k_reg_notifier(struct wiphy *wiphy,
 273                               struct regulatory_request *request)
 274 {
 275         struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
 276         struct ath9k_htc_priv *priv = hw->priv;
 277
 278         return ath_reg_notifier_apply(wiphy, request,
 279                                       ath9k_hw_regulatory(priv->ah));
 280 }
 281
 282 static unsigned int ath9k_regread(void *hw_priv, u32 reg_offset)
 283 {
 284         struct ath_hw *ah = (struct ath_hw *) hw_priv;
 285         struct ath_common *common = ath9k_hw_common(ah);
 286         struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
 287         __be32 val, reg = cpu_to_be32(reg_offset);
 288         int r;
 289
 290         r = ath9k_wmi_cmd(priv->wmi, WMI_REG_READ_CMDID,
 291                           (u8 *) &reg, sizeof(reg),
 292                           (u8 *) &val, sizeof(val),
 293                           100);
 294         if (unlikely(r)) {
 295                 ath_print(common, ATH_DBG_WMI,
 296                           "REGISTER READ FAILED: (0x%04x, %d)\n",
 297                            reg_offset, r);
 298                 return -EIO;
 299         }
 300
 301         return be32_to_cpu(val);
 302 }
 303
 304 static void ath9k_regwrite_single(void *hw_priv, u32 val, u32 reg_offset)
 305 {
 306         struct ath_hw *ah = (struct ath_hw *) hw_priv;
 307         struct ath_common *common = ath9k_hw_common(ah);
 308         struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
 309         __be32 buf[2] = {
 310                 cpu_to_be32(reg_offset),
 311                 cpu_to_be32(val),
 312         };
 313         int r;
 314
 315         r = ath9k_wmi_cmd(priv->wmi, WMI_REG_WRITE_CMDID,
 316                           (u8 *) &buf, sizeof(buf),
 317                           (u8 *) &val, sizeof(val),
 318                           100);
 319         if (unlikely(r)) {
 320                 ath_print(common, ATH_DBG_WMI,
 321                           "REGISTER WRITE FAILED:(0x%04x, %d)\n",
 322                           reg_offset, r);
 323         }
 324 }
 325
 326 static void ath9k_regwrite_buffer(void *hw_priv, u32 val, u32 reg_offset)
 327 {
 328         struct ath_hw *ah = (struct ath_hw *) hw_priv;
 329         struct ath_common *common = ath9k_hw_common(ah);
 330         struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
 331         u32 rsp_status;
 332         int r;
 333
 334         mutex_lock(&priv->wmi->multi_write_mutex);
 335
 336         /* Store the register/value */
 337         priv->wmi->multi_write[priv->wmi->multi_write_idx].reg =
 338                 cpu_to_be32(reg_offset);
 339         priv->wmi->multi_write[priv->wmi->multi_write_idx].val =
 340                 cpu_to_be32(val);
 341
 342         priv->wmi->multi_write_idx++;
 343
 344         /* If the buffer is full, send it out. */
 345         if (priv->wmi->multi_write_idx == MAX_CMD_NUMBER) {
 346                 r = ath9k_wmi_cmd(priv->wmi, WMI_REG_WRITE_CMDID,
 347                           (u8 *) &priv->wmi->multi_write,
 348                           sizeof(struct register_write) * priv->wmi->multi_write_idx,
 349                           (u8 *) &rsp_status, sizeof(rsp_status),
 350                           100);
 351                 if (unlikely(r)) {
 352                         ath_print(common, ATH_DBG_WMI,
 353                                   "REGISTER WRITE FAILED, multi len: %d\n",
 354                                   priv->wmi->multi_write_idx);
 355                 }
 356                 priv->wmi->multi_write_idx = 0;
 357         }
 358
 359         mutex_unlock(&priv->wmi->multi_write_mutex);
 360 }
 361
 362 static void ath9k_regwrite(void *hw_priv, u32 val, u32 reg_offset)
 363 {
 364         struct ath_hw *ah = (struct ath_hw *) hw_priv;
 365         struct ath_common *common = ath9k_hw_common(ah);
 366         struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
 367
 368         if (atomic_read(&priv->wmi->mwrite_cnt))
 369                 ath9k_regwrite_buffer(hw_priv, val, reg_offset);
 370         else
 371                 ath9k_regwrite_single(hw_priv, val, reg_offset);
 372 }
 373
 374 static void ath9k_enable_regwrite_buffer(void *hw_priv)
 375 {
 376         struct ath_hw *ah = (struct ath_hw *) hw_priv;
 377         struct ath_common *common = ath9k_hw_common(ah);
 378         struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
 379
 380         atomic_inc(&priv->wmi->mwrite_cnt);
 381 }
 382
 383 static void ath9k_regwrite_flush(void *hw_priv)
 384 {
 385         struct ath_hw *ah = (struct ath_hw *) hw_priv;
 386         struct ath_common *common = ath9k_hw_common(ah);
 387         struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
 388         u32 rsp_status;
 389         int r;
 390
 391         atomic_dec(&priv->wmi->mwrite_cnt);
 392
 393         mutex_lock(&priv->wmi->multi_write_mutex);
 394
 395         if (priv->wmi->multi_write_idx) {
 396                 r = ath9k_wmi_cmd(priv->wmi, WMI_REG_WRITE_CMDID,
 397                           (u8 *) &priv->wmi->multi_write,
 398                           sizeof(struct register_write) * priv->wmi->multi_write_idx,
 399                           (u8 *) &rsp_status, sizeof(rsp_status),
 400                           100);
 401                 if (unlikely(r)) {
 402                         ath_print(common, ATH_DBG_WMI,
 403                                   "REGISTER WRITE FAILED, multi len: %d\n",
 404                                   priv->wmi->multi_write_idx);
 405                 }
 406                 priv->wmi->multi_write_idx = 0;
 407         }
 408
 409         mutex_unlock(&priv->wmi->multi_write_mutex);
 410 }
 411
 412 static const struct ath_ops ath9k_common_ops = {
 413         .read = ath9k_regread,
 414         .write = ath9k_regwrite,
 415         .enable_write_buffer = ath9k_enable_regwrite_buffer,
 416         .write_flush = ath9k_regwrite_flush,
 417 };
 418
 419 static void ath_usb_read_cachesize(struct ath_common *common, int *csz)
 420 {
 421         *csz = L1_CACHE_BYTES >> 2;
 422 }
 423
 424 static bool ath_usb_eeprom_read(struct ath_common *common, u32 off, u16 *data)
 425 {
 426         struct ath_hw *ah = (struct ath_hw *) common->ah;
 427
 428         (void)REG_READ(ah, AR5416_EEPROM_OFFSET + (off << AR5416_EEPROM_S));
 429
 430         if (!ath9k_hw_wait(ah,
 431                            AR_EEPROM_STATUS_DATA,
 432                            AR_EEPROM_STATUS_DATA_BUSY |
 433                            AR_EEPROM_STATUS_DATA_PROT_ACCESS, 0,
 434                            AH_WAIT_TIMEOUT))
 435                 return false;
 436
 437         *data = MS(REG_READ(ah, AR_EEPROM_STATUS_DATA),
 438                    AR_EEPROM_STATUS_DATA_VAL);
 439
 440         return true;
 441 }
 442
 443 static const struct ath_bus_ops ath9k_usb_bus_ops = {
 444         .ath_bus_type = ATH_USB,
 445         .read_cachesize = ath_usb_read_cachesize,
 446         .eeprom_read = ath_usb_eeprom_read,
 447 };
 448
 449 static void setup_ht_cap(struct ath9k_htc_priv *priv,
 450                          struct ieee80211_sta_ht_cap *ht_info)
 451 {
 452         struct ath_common *common = ath9k_hw_common(priv->ah);
 453         u8 tx_streams, rx_streams;
 454         int i;
 455
 456         ht_info->ht_supported = true;
 457         ht_info->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
 458                        IEEE80211_HT_CAP_SM_PS |
 459                        IEEE80211_HT_CAP_SGI_40 |
 460                        IEEE80211_HT_CAP_DSSSCCK40;
 461
 462         if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_SGI_20)
 463                 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
 464
 465         ht_info->cap |= (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
 466
 467         ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
 468         ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_8;
 469
 470         memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
 471
 472         /* ath9k_htc supports only 1 or 2 stream devices */
 473         tx_streams = ath9k_cmn_count_streams(common->tx_chainmask, 2);
 474         rx_streams = ath9k_cmn_count_streams(common->rx_chainmask, 2);
 475
 476         ath_print(common, ATH_DBG_CONFIG,
 477                   "TX streams %d, RX streams: %d\n",
 478                   tx_streams, rx_streams);
 479
 480         if (tx_streams != rx_streams) {
 481                 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
 482                 ht_info->mcs.tx_params |= ((tx_streams - 1) <<
 483                                            IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
 484         }
 485
 486         for (i = 0; i < rx_streams; i++)
 487                 ht_info->mcs.rx_mask[i] = 0xff;
 488
 489         ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_DEFINED;
 490 }
 491
 492 static int ath9k_init_queues(struct ath9k_htc_priv *priv)
 493 {
 494         struct ath_common *common = ath9k_hw_common(priv->ah);
 495         int i;
 496
 497         for (i = 0; i < ARRAY_SIZE(priv->hwq_map); i++)
 498                 priv->hwq_map[i] = -1;
 499
 500         priv->beaconq = ath9k_hw_beaconq_setup(priv->ah);
 501         if (priv->beaconq == -1) {
 502                 ath_print(common, ATH_DBG_FATAL,
 503                           "Unable to setup BEACON xmit queue\n");
 504                 goto err;
 505         }
 506
 507         priv->cabq = ath9k_htc_cabq_setup(priv);
 508         if (priv->cabq == -1) {
 509                 ath_print(common, ATH_DBG_FATAL,
 510                           "Unable to setup CAB xmit queue\n");
 511                 goto err;
 512         }
 513
 514         if (!ath9k_htc_txq_setup(priv, WME_AC_BE)) {
 515                 ath_print(common, ATH_DBG_FATAL,
 516                           "Unable to setup xmit queue for BE traffic\n");
 517                 goto err;
 518         }
 519
 520         if (!ath9k_htc_txq_setup(priv, WME_AC_BK)) {
 521                 ath_print(common, ATH_DBG_FATAL,
 522                           "Unable to setup xmit queue for BK traffic\n");
 523                 goto err;
 524         }
 525         if (!ath9k_htc_txq_setup(priv, WME_AC_VI)) {
 526                 ath_print(common, ATH_DBG_FATAL,
 527                           "Unable to setup xmit queue for VI traffic\n");
 528                 goto err;
 529         }
 530         if (!ath9k_htc_txq_setup(priv, WME_AC_VO)) {
 531                 ath_print(common, ATH_DBG_FATAL,
 532                           "Unable to setup xmit queue for VO traffic\n");
 533                 goto err;
 534         }
 535
 536         return 0;
 537
 538 err:
 539         return -EINVAL;
 540 }
 541
 542 static void ath9k_init_crypto(struct ath9k_htc_priv *priv)
 543 {
 544         struct ath_common *common = ath9k_hw_common(priv->ah);
 545         int i = 0;
 546
 547         /* Get the hardware key cache size. */
 548         common->keymax = priv->ah->caps.keycache_size;
 549         if (common->keymax > ATH_KEYMAX) {
 550                 ath_print(common, ATH_DBG_ANY,
 551                           "Warning, using only %u entries in %u key cache\n",
 552                           ATH_KEYMAX, common->keymax);
 553                 common->keymax = ATH_KEYMAX;
 554         }
 555
 556         if (priv->ah->misc_mode & AR_PCU_MIC_NEW_LOC_ENA)
 557                 common->crypt_caps |= ATH_CRYPT_CAP_MIC_COMBINED;
 558
 559         /*
 560          * Reset the key cache since some parts do not
 561          * reset the contents on initial power up.
 562          */
 563         for (i = 0; i < common->keymax; i++)
 564                 ath_hw_keyreset(common, (u16) i);
 565 }
 566
 567 static void ath9k_init_channels_rates(struct ath9k_htc_priv *priv)
 568 {
 569         if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ) {
 570                 priv->sbands[IEEE80211_BAND_2GHZ].channels =
 571                         ath9k_2ghz_channels;
 572                 priv->sbands[IEEE80211_BAND_2GHZ].band = IEEE80211_BAND_2GHZ;
 573                 priv->sbands[IEEE80211_BAND_2GHZ].n_channels =
 574                         ARRAY_SIZE(ath9k_2ghz_channels);
 575                 priv->sbands[IEEE80211_BAND_2GHZ].bitrates = ath9k_legacy_rates;
 576                 priv->sbands[IEEE80211_BAND_2GHZ].n_bitrates =
 577                         ARRAY_SIZE(ath9k_legacy_rates);
 578         }
 579
 580         if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ) {
 581                 priv->sbands[IEEE80211_BAND_5GHZ].channels = ath9k_5ghz_channels;
 582                 priv->sbands[IEEE80211_BAND_5GHZ].band = IEEE80211_BAND_5GHZ;
 583                 priv->sbands[IEEE80211_BAND_5GHZ].n_channels =
 584                         ARRAY_SIZE(ath9k_5ghz_channels);
 585                 priv->sbands[IEEE80211_BAND_5GHZ].bitrates =
 586                         ath9k_legacy_rates + 4;
 587                 priv->sbands[IEEE80211_BAND_5GHZ].n_bitrates =
 588                         ARRAY_SIZE(ath9k_legacy_rates) - 4;
 589         }
 590 }
 591
 592 static void ath9k_init_misc(struct ath9k_htc_priv *priv)
 593 {
 594         struct ath_common *common = ath9k_hw_common(priv->ah);
 595
 596         common->tx_chainmask = priv->ah->caps.tx_chainmask;
 597         common->rx_chainmask = priv->ah->caps.rx_chainmask;
 598
 599         memcpy(common->bssidmask, ath_bcast_mac, ETH_ALEN);
 600
 601         priv->ah->opmode = NL80211_IFTYPE_STATION;
 602 }
 603
 604 static void ath9k_init_btcoex(struct ath9k_htc_priv *priv)
 605 {
 606         int qnum;
 607
 608         switch (priv->ah->btcoex_hw.scheme) {
 609         case ATH_BTCOEX_CFG_NONE:
 610                 break;
 611         case ATH_BTCOEX_CFG_3WIRE:
 612                 priv->ah->btcoex_hw.btactive_gpio = 7;
 613                 priv->ah->btcoex_hw.btpriority_gpio = 6;
 614                 priv->ah->btcoex_hw.wlanactive_gpio = 8;
 615                 priv->btcoex.bt_stomp_type = ATH_BTCOEX_STOMP_LOW;
 616                 ath9k_hw_btcoex_init_3wire(priv->ah);
 617                 ath_htc_init_btcoex_work(priv);
 618                 qnum = priv->hwq_map[WME_AC_BE];
 619                 ath9k_hw_init_btcoex_hw(priv->ah, qnum);
 620                 break;
 621         default:
 622                 WARN_ON(1);
 623                 break;
 624         }
 625 }
 626
 627 static int ath9k_init_priv(struct ath9k_htc_priv *priv,
 628                            u16 devid, char *product)
 629 {
 630         struct ath_hw *ah = NULL;
 631         struct ath_common *common;
 632         int ret = 0, csz = 0;
 633
 634         priv->op_flags |= OP_INVALID;
 635
 636         ah = kzalloc(sizeof(struct ath_hw), GFP_KERNEL);
 637         if (!ah)
 638                 return -ENOMEM;
 639
 640         ah->hw_version.devid = devid;
 641         ah->hw_version.subsysid = 0; /* FIXME */
 642         priv->ah = ah;
 643
 644         common = ath9k_hw_common(ah);
 645         common->ops = &ath9k_common_ops;
 646         common->bus_ops = &ath9k_usb_bus_ops;
 647         common->ah = ah;
 648         common->hw = priv->hw;
 649         common->priv = priv;
 650         common->debug_mask = ath9k_debug;
 651
 652         spin_lock_init(&priv->wmi->wmi_lock);
 653         spin_lock_init(&priv->beacon_lock);
 654         spin_lock_init(&priv->tx_lock);
 655         mutex_init(&priv->mutex);
 656         mutex_init(&priv->htc_pm_lock);
 657         tasklet_init(&priv->wmi_tasklet, ath9k_wmi_tasklet,
 658                      (unsigned long)priv);
 659         tasklet_init(&priv->rx_tasklet, ath9k_rx_tasklet,
 660                      (unsigned long)priv);
 661         tasklet_init(&priv->tx_tasklet, ath9k_tx_tasklet, (unsigned long)priv);
 662         INIT_DELAYED_WORK(&priv->ath9k_ani_work, ath9k_ani_work);
 663         INIT_WORK(&priv->ps_work, ath9k_ps_work);
 664
 665         /*
 666          * Cache line size is used to size and align various
 667          * structures used to communicate with the hardware.
 668          */
 669         ath_read_cachesize(common, &csz);
 670         common->cachelsz = csz << 2; /* convert to bytes */
 671
 672         ret = ath9k_hw_init(ah);
 673         if (ret) {
 674                 ath_print(common, ATH_DBG_FATAL,
 675                           "Unable to initialize hardware; "
 676                           "initialization status: %d\n", ret);
 677                 goto err_hw;
 678         }
 679
 680         ret = ath9k_htc_init_debug(ah);
 681         if (ret) {
 682                 ath_print(common, ATH_DBG_FATAL,
 683                           "Unable to create debugfs files\n");
 684                 goto err_debug;
 685         }
 686
 687         ret = ath9k_init_queues(priv);
 688         if (ret)
 689                 goto err_queues;
 690
 691         ath9k_init_crypto(priv);
 692         ath9k_init_channels_rates(priv);
 693         ath9k_init_misc(priv);
 694
 695         if (product && strncmp(product, ATH_HTC_BTCOEX_PRODUCT_ID, 5) == 0) {
 696                 ah->btcoex_hw.scheme = ATH_BTCOEX_CFG_3WIRE;
 697                 ath9k_init_btcoex(priv);
 698         }
 699
 700         return 0;
 701
 702 err_queues:
 703         ath9k_htc_exit_debug(ah);
 704 err_debug:
 705         ath9k_hw_deinit(ah);
 706 err_hw:
 707
 708         kfree(ah);
 709         priv->ah = NULL;
 710
 711         return ret;
 712 }
 713
 714 static void ath9k_set_hw_capab(struct ath9k_htc_priv *priv,
 715                                struct ieee80211_hw *hw)
 716 {
 717         struct ath_common *common = ath9k_hw_common(priv->ah);
 718
 719         hw->flags = IEEE80211_HW_SIGNAL_DBM |
 720                 IEEE80211_HW_AMPDU_AGGREGATION |
 721                 IEEE80211_HW_SPECTRUM_MGMT |
 722                 IEEE80211_HW_HAS_RATE_CONTROL |
 723                 IEEE80211_HW_RX_INCLUDES_FCS |
 724                 IEEE80211_HW_SUPPORTS_PS |
 725                 IEEE80211_HW_PS_NULLFUNC_STACK;
 726
 727         hw->wiphy->interface_modes =
 728                 BIT(NL80211_IFTYPE_STATION) |
 729                 BIT(NL80211_IFTYPE_ADHOC);
 730
 731         hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
 732
 733         hw->queues = 4;
 734         hw->channel_change_time = 5000;
 735         hw->max_listen_interval = 10;
 736         hw->vif_data_size = sizeof(struct ath9k_htc_vif);
 737         hw->sta_data_size = sizeof(struct ath9k_htc_sta);
 738
 739         /* tx_frame_hdr is larger than tx_mgmt_hdr anyway */
 740         hw->extra_tx_headroom = sizeof(struct tx_frame_hdr) +
 741                 sizeof(struct htc_frame_hdr) + 4;
 742
 743         if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ)
 744                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
 745                         &priv->sbands[IEEE80211_BAND_2GHZ];
 746         if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ)
 747                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
 748                         &priv->sbands[IEEE80211_BAND_5GHZ];
 749
 750         if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_HT) {
 751                 if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ)
 752                         setup_ht_cap(priv,
 753                                      &priv->sbands[IEEE80211_BAND_2GHZ].ht_cap);
 754                 if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ)
 755                         setup_ht_cap(priv,
 756                                      &priv->sbands[IEEE80211_BAND_5GHZ].ht_cap);
 757         }
 758
 759         SET_IEEE80211_PERM_ADDR(hw, common->macaddr);
 760 }
 761
 762 static int ath9k_init_device(struct ath9k_htc_priv *priv,
 763                              u16 devid, char *product)
 764 {
 765         struct ieee80211_hw *hw = priv->hw;
 766         struct ath_common *common;
 767         struct ath_hw *ah;
 768         int error = 0;
 769         struct ath_regulatory *reg;
 770
 771         /* Bring up device */
 772         error = ath9k_init_priv(priv, devid, product);
 773         if (error != 0)
 774                 goto err_init;
 775
 776         ah = priv->ah;
 777         common = ath9k_hw_common(ah);
 778         ath9k_set_hw_capab(priv, hw);
 779
 780         /* Initialize regulatory */
 781         error = ath_regd_init(&common->regulatory, priv->hw->wiphy,
 782                               ath9k_reg_notifier);
 783         if (error)
 784                 goto err_regd;
 785
 786         reg = &common->regulatory;
 787
 788         /* Setup TX */
 789         error = ath9k_tx_init(priv);
 790         if (error != 0)
 791                 goto err_tx;
 792
 793         /* Setup RX */
 794         error = ath9k_rx_init(priv);
 795         if (error != 0)
 796                 goto err_rx;
 797
 798         /* Register with mac80211 */
 799         error = ieee80211_register_hw(hw);
 800         if (error)
 801                 goto err_register;
 802
 803         /* Handle world regulatory */
 804         if (!ath_is_world_regd(reg)) {
 805                 error = regulatory_hint(hw->wiphy, reg->alpha2);
 806                 if (error)
 807                         goto err_world;
 808         }
 809
 810         ath9k_init_leds(priv);
 811         ath9k_start_rfkill_poll(priv);
 812
 813         return 0;
 814
 815 err_world:
 816         ieee80211_unregister_hw(hw);
 817 err_register:
 818         ath9k_rx_cleanup(priv);
 819 err_rx:
 820         ath9k_tx_cleanup(priv);
 821 err_tx:
 822         /* Nothing */
 823 err_regd:
 824         ath9k_deinit_priv(priv);
 825 err_init:
 826         return error;
 827 }
 828
 829 int ath9k_htc_probe_device(struct htc_target *htc_handle, struct device *dev,
 830                            u16 devid, char *product)
 831 {
 832         struct ieee80211_hw *hw;
 833         struct ath9k_htc_priv *priv;
 834         int ret;
 835
 836         hw = ieee80211_alloc_hw(sizeof(struct ath9k_htc_priv), &ath9k_htc_ops);
 837         if (!hw)
 838                 return -ENOMEM;
 839
 840         priv = hw->priv;
 841         priv->hw = hw;
 842         priv->htc = htc_handle;
 843         priv->dev = dev;
 844         htc_handle->drv_priv = priv;
 845         SET_IEEE80211_DEV(hw, priv->dev);
 846
 847         ret = ath9k_htc_wait_for_target(priv);
 848         if (ret)
 849                 goto err_free;
 850
 851         priv->wmi = ath9k_init_wmi(priv);
 852         if (!priv->wmi) {
 853                 ret = -EINVAL;
 854                 goto err_free;
 855         }
 856
 857         ret = ath9k_init_htc_services(priv, devid);
 858         if (ret)
 859                 goto err_init;
 860
 861         /* The device may have been unplugged earlier. */
 862         priv->op_flags &= ~OP_UNPLUGGED;
 863
 864         ret = ath9k_init_device(priv, devid, product);
 865         if (ret)
 866                 goto err_init;
 867
 868         return 0;
 869
 870 err_init:
 871         ath9k_deinit_wmi(priv);
 872 err_free:
 873         ieee80211_free_hw(hw);
 874         return ret;
 875 }
 876
 877 void ath9k_htc_disconnect_device(struct htc_target *htc_handle, bool hotunplug)
 878 {
 879         if (htc_handle->drv_priv) {
 880
 881                 /* Check if the device has been yanked out. */
 882                 if (hotunplug)
 883                         htc_handle->drv_priv->op_flags |= OP_UNPLUGGED;
 884
 885                 ath9k_deinit_device(htc_handle->drv_priv);
 886                 ath9k_deinit_wmi(htc_handle->drv_priv);
 887                 ieee80211_free_hw(htc_handle->drv_priv->hw);
 888         }
 889 }
 890
 891 #ifdef CONFIG_PM
 892 int ath9k_htc_resume(struct htc_target *htc_handle)
 893 {
 894         int ret;
 895
 896         ret = ath9k_htc_wait_for_target(htc_handle->drv_priv);
 897         if (ret)
 898                 return ret;
 899
 900         ret = ath9k_init_htc_services(htc_handle->drv_priv,
 901                               htc_handle->drv_priv->ah->hw_version.devid);
 902         return ret;
 903 }
 904 #endif
 905
 906 static int __init ath9k_htc_init(void)
 907 {
 908         int error;
 909
 910         error = ath9k_htc_debug_create_root();
 911         if (error < 0) {
 912                 printk(KERN_ERR
 913                         "ath9k_htc: Unable to create debugfs root: %d\n",
 914                         error);
 915                 goto err_dbg;
 916         }
 917
 918         error = ath9k_hif_usb_init();
 919         if (error < 0) {
 920                 printk(KERN_ERR
 921                         "ath9k_htc: No USB devices found,"
 922                         " driver not installed.\n");
 923                 error = -ENODEV;
 924                 goto err_usb;
 925         }
 926
 927         return 0;
 928
 929 err_usb:
 930         ath9k_htc_debug_remove_root();
 931 err_dbg:
 932         return error;
 933 }
 934 module_init(ath9k_htc_init);
 935
 936 static void __exit ath9k_htc_exit(void)
 937 {
 938         ath9k_hif_usb_exit();
 939         ath9k_htc_debug_remove_root();
 940         printk(KERN_INFO "ath9k_htc: Driver unloaded\n");
 941 }
 942 module_exit(ath9k_htc_exit);