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_disable_regwrite_buffer(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
 389         atomic_dec(&priv->wmi->mwrite_cnt);
 390 }
 391
 392 static void ath9k_regwrite_flush(void *hw_priv)
 393 {
 394         struct ath_hw *ah = (struct ath_hw *) hw_priv;
 395         struct ath_common *common = ath9k_hw_common(ah);
 396         struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
 397         u32 rsp_status;
 398         int r;
 399
 400         mutex_lock(&priv->wmi->multi_write_mutex);
 401
 402         if (priv->wmi->multi_write_idx) {
 403                 r = ath9k_wmi_cmd(priv->wmi, WMI_REG_WRITE_CMDID,
 404                           (u8 *) &priv->wmi->multi_write,
 405                           sizeof(struct register_write) * priv->wmi->multi_write_idx,
 406                           (u8 *) &rsp_status, sizeof(rsp_status),
 407                           100);
 408                 if (unlikely(r)) {
 409                         ath_print(common, ATH_DBG_WMI,
 410                                   "REGISTER WRITE FAILED, multi len: %d\n",
 411                                   priv->wmi->multi_write_idx);
 412                 }
 413                 priv->wmi->multi_write_idx = 0;
 414         }
 415
 416         mutex_unlock(&priv->wmi->multi_write_mutex);
 417 }
 418
 419 static const struct ath_ops ath9k_common_ops = {
 420         .read = ath9k_regread,
 421         .write = ath9k_regwrite,
 422         .enable_write_buffer = ath9k_enable_regwrite_buffer,
 423         .disable_write_buffer = ath9k_disable_regwrite_buffer,
 424         .write_flush = ath9k_regwrite_flush,
 425 };
 426
 427 static void ath_usb_read_cachesize(struct ath_common *common, int *csz)
 428 {
 429         *csz = L1_CACHE_BYTES >> 2;
 430 }
 431
 432 static bool ath_usb_eeprom_read(struct ath_common *common, u32 off, u16 *data)
 433 {
 434         struct ath_hw *ah = (struct ath_hw *) common->ah;
 435
 436         (void)REG_READ(ah, AR5416_EEPROM_OFFSET + (off << AR5416_EEPROM_S));
 437
 438         if (!ath9k_hw_wait(ah,
 439                            AR_EEPROM_STATUS_DATA,
 440                            AR_EEPROM_STATUS_DATA_BUSY |
 441                            AR_EEPROM_STATUS_DATA_PROT_ACCESS, 0,
 442                            AH_WAIT_TIMEOUT))
 443                 return false;
 444
 445         *data = MS(REG_READ(ah, AR_EEPROM_STATUS_DATA),
 446                    AR_EEPROM_STATUS_DATA_VAL);
 447
 448         return true;
 449 }
 450
 451 static const struct ath_bus_ops ath9k_usb_bus_ops = {
 452         .ath_bus_type = ATH_USB,
 453         .read_cachesize = ath_usb_read_cachesize,
 454         .eeprom_read = ath_usb_eeprom_read,
 455 };
 456
 457 static void setup_ht_cap(struct ath9k_htc_priv *priv,
 458                          struct ieee80211_sta_ht_cap *ht_info)
 459 {
 460         struct ath_common *common = ath9k_hw_common(priv->ah);
 461         u8 tx_streams, rx_streams;
 462         int i;
 463
 464         ht_info->ht_supported = true;
 465         ht_info->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
 466                        IEEE80211_HT_CAP_SM_PS |
 467                        IEEE80211_HT_CAP_SGI_40 |
 468                        IEEE80211_HT_CAP_DSSSCCK40;
 469
 470         if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_SGI_20)
 471                 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
 472
 473         ht_info->cap |= (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
 474
 475         ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
 476         ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_8;
 477
 478         memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
 479
 480         /* ath9k_htc supports only 1 or 2 stream devices */
 481         tx_streams = ath9k_cmn_count_streams(common->tx_chainmask, 2);
 482         rx_streams = ath9k_cmn_count_streams(common->rx_chainmask, 2);
 483
 484         ath_print(common, ATH_DBG_CONFIG,
 485                   "TX streams %d, RX streams: %d\n",
 486                   tx_streams, rx_streams);
 487
 488         if (tx_streams != rx_streams) {
 489                 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
 490                 ht_info->mcs.tx_params |= ((tx_streams - 1) <<
 491                                            IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
 492         }
 493
 494         for (i = 0; i < rx_streams; i++)
 495                 ht_info->mcs.rx_mask[i] = 0xff;
 496
 497         ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_DEFINED;
 498 }
 499
 500 static int ath9k_init_queues(struct ath9k_htc_priv *priv)
 501 {
 502         struct ath_common *common = ath9k_hw_common(priv->ah);
 503         int i;
 504
 505         for (i = 0; i < ARRAY_SIZE(priv->hwq_map); i++)
 506                 priv->hwq_map[i] = -1;
 507
 508         priv->beaconq = ath9k_hw_beaconq_setup(priv->ah);
 509         if (priv->beaconq == -1) {
 510                 ath_print(common, ATH_DBG_FATAL,
 511                           "Unable to setup BEACON xmit queue\n");
 512                 goto err;
 513         }
 514
 515         priv->cabq = ath9k_htc_cabq_setup(priv);
 516         if (priv->cabq == -1) {
 517                 ath_print(common, ATH_DBG_FATAL,
 518                           "Unable to setup CAB xmit queue\n");
 519                 goto err;
 520         }
 521
 522         if (!ath9k_htc_txq_setup(priv, WME_AC_BE)) {
 523                 ath_print(common, ATH_DBG_FATAL,
 524                           "Unable to setup xmit queue for BE traffic\n");
 525                 goto err;
 526         }
 527
 528         if (!ath9k_htc_txq_setup(priv, WME_AC_BK)) {
 529                 ath_print(common, ATH_DBG_FATAL,
 530                           "Unable to setup xmit queue for BK traffic\n");
 531                 goto err;
 532         }
 533         if (!ath9k_htc_txq_setup(priv, WME_AC_VI)) {
 534                 ath_print(common, ATH_DBG_FATAL,
 535                           "Unable to setup xmit queue for VI traffic\n");
 536                 goto err;
 537         }
 538         if (!ath9k_htc_txq_setup(priv, WME_AC_VO)) {
 539                 ath_print(common, ATH_DBG_FATAL,
 540                           "Unable to setup xmit queue for VO traffic\n");
 541                 goto err;
 542         }
 543
 544         return 0;
 545
 546 err:
 547         return -EINVAL;
 548 }
 549
 550 static void ath9k_init_crypto(struct ath9k_htc_priv *priv)
 551 {
 552         struct ath_common *common = ath9k_hw_common(priv->ah);
 553         int i = 0;
 554
 555         /* Get the hardware key cache size. */
 556         common->keymax = priv->ah->caps.keycache_size;
 557         if (common->keymax > ATH_KEYMAX) {
 558                 ath_print(common, ATH_DBG_ANY,
 559                           "Warning, using only %u entries in %u key cache\n",
 560                           ATH_KEYMAX, common->keymax);
 561                 common->keymax = ATH_KEYMAX;
 562         }
 563
 564         /*
 565          * Reset the key cache since some parts do not
 566          * reset the contents on initial power up.
 567          */
 568         for (i = 0; i < common->keymax; i++)
 569                 ath9k_hw_keyreset(priv->ah, (u16) i);
 570 }
 571
 572 static void ath9k_init_channels_rates(struct ath9k_htc_priv *priv)
 573 {
 574         if (test_bit(ATH9K_MODE_11G, priv->ah->caps.wireless_modes)) {
 575                 priv->sbands[IEEE80211_BAND_2GHZ].channels =
 576                         ath9k_2ghz_channels;
 577                 priv->sbands[IEEE80211_BAND_2GHZ].band = IEEE80211_BAND_2GHZ;
 578                 priv->sbands[IEEE80211_BAND_2GHZ].n_channels =
 579                         ARRAY_SIZE(ath9k_2ghz_channels);
 580                 priv->sbands[IEEE80211_BAND_2GHZ].bitrates = ath9k_legacy_rates;
 581                 priv->sbands[IEEE80211_BAND_2GHZ].n_bitrates =
 582                         ARRAY_SIZE(ath9k_legacy_rates);
 583         }
 584
 585         if (test_bit(ATH9K_MODE_11A, priv->ah->caps.wireless_modes)) {
 586                 priv->sbands[IEEE80211_BAND_5GHZ].channels = ath9k_5ghz_channels;
 587                 priv->sbands[IEEE80211_BAND_5GHZ].band = IEEE80211_BAND_5GHZ;
 588                 priv->sbands[IEEE80211_BAND_5GHZ].n_channels =
 589                         ARRAY_SIZE(ath9k_5ghz_channels);
 590                 priv->sbands[IEEE80211_BAND_5GHZ].bitrates =
 591                         ath9k_legacy_rates + 4;
 592                 priv->sbands[IEEE80211_BAND_5GHZ].n_bitrates =
 593                         ARRAY_SIZE(ath9k_legacy_rates) - 4;
 594         }
 595 }
 596
 597 static void ath9k_init_misc(struct ath9k_htc_priv *priv)
 598 {
 599         struct ath_common *common = ath9k_hw_common(priv->ah);
 600
 601         common->tx_chainmask = priv->ah->caps.tx_chainmask;
 602         common->rx_chainmask = priv->ah->caps.rx_chainmask;
 603
 604         memcpy(common->bssidmask, ath_bcast_mac, ETH_ALEN);
 605
 606         priv->ah->opmode = NL80211_IFTYPE_STATION;
 607 }
 608
 609 static void ath9k_init_btcoex(struct ath9k_htc_priv *priv)
 610 {
 611         int qnum;
 612
 613         switch (priv->ah->btcoex_hw.scheme) {
 614         case ATH_BTCOEX_CFG_NONE:
 615                 break;
 616         case ATH_BTCOEX_CFG_3WIRE:
 617                 priv->ah->btcoex_hw.btactive_gpio = 7;
 618                 priv->ah->btcoex_hw.btpriority_gpio = 6;
 619                 priv->ah->btcoex_hw.wlanactive_gpio = 8;
 620                 priv->btcoex.bt_stomp_type = ATH_BTCOEX_STOMP_LOW;
 621                 ath9k_hw_btcoex_init_3wire(priv->ah);
 622                 ath_htc_init_btcoex_work(priv);
 623                 qnum = priv->hwq_map[WME_AC_BE];
 624                 ath9k_hw_init_btcoex_hw(priv->ah, qnum);
 625                 break;
 626         default:
 627                 WARN_ON(1);
 628                 break;
 629         }
 630 }
 631
 632 static int ath9k_init_priv(struct ath9k_htc_priv *priv,
 633                            u16 devid, char *product)
 634 {
 635         struct ath_hw *ah = NULL;
 636         struct ath_common *common;
 637         int ret = 0, csz = 0;
 638
 639         priv->op_flags |= OP_INVALID;
 640
 641         ah = kzalloc(sizeof(struct ath_hw), GFP_KERNEL);
 642         if (!ah)
 643                 return -ENOMEM;
 644
 645         ah->hw_version.devid = devid;
 646         ah->hw_version.subsysid = 0; /* FIXME */
 647         priv->ah = ah;
 648
 649         common = ath9k_hw_common(ah);
 650         common->ops = &ath9k_common_ops;
 651         common->bus_ops = &ath9k_usb_bus_ops;
 652         common->ah = ah;
 653         common->hw = priv->hw;
 654         common->priv = priv;
 655         common->debug_mask = ath9k_debug;
 656
 657         spin_lock_init(&priv->wmi->wmi_lock);
 658         spin_lock_init(&priv->beacon_lock);
 659         spin_lock_init(&priv->tx_lock);
 660         mutex_init(&priv->mutex);
 661         mutex_init(&priv->htc_pm_lock);
 662         tasklet_init(&priv->wmi_tasklet, ath9k_wmi_tasklet,
 663                      (unsigned long)priv);
 664         tasklet_init(&priv->rx_tasklet, ath9k_rx_tasklet,
 665                      (unsigned long)priv);
 666         tasklet_init(&priv->tx_tasklet, ath9k_tx_tasklet, (unsigned long)priv);
 667         INIT_DELAYED_WORK(&priv->ath9k_ani_work, ath9k_ani_work);
 668         INIT_WORK(&priv->ps_work, ath9k_ps_work);
 669
 670         /*
 671          * Cache line size is used to size and align various
 672          * structures used to communicate with the hardware.
 673          */
 674         ath_read_cachesize(common, &csz);
 675         common->cachelsz = csz << 2; /* convert to bytes */
 676
 677         ret = ath9k_hw_init(ah);
 678         if (ret) {
 679                 ath_print(common, ATH_DBG_FATAL,
 680                           "Unable to initialize hardware; "
 681                           "initialization status: %d\n", ret);
 682                 goto err_hw;
 683         }
 684
 685         ret = ath9k_htc_init_debug(ah);
 686         if (ret) {
 687                 ath_print(common, ATH_DBG_FATAL,
 688                           "Unable to create debugfs files\n");
 689                 goto err_debug;
 690         }
 691
 692         ret = ath9k_init_queues(priv);
 693         if (ret)
 694                 goto err_queues;
 695
 696         ath9k_init_crypto(priv);
 697         ath9k_init_channels_rates(priv);
 698         ath9k_init_misc(priv);
 699
 700         if (product && strncmp(product, ATH_HTC_BTCOEX_PRODUCT_ID, 5) == 0) {
 701                 ah->btcoex_hw.scheme = ATH_BTCOEX_CFG_3WIRE;
 702                 ath9k_init_btcoex(priv);
 703         }
 704
 705         return 0;
 706
 707 err_queues:
 708         ath9k_htc_exit_debug(ah);
 709 err_debug:
 710         ath9k_hw_deinit(ah);
 711 err_hw:
 712
 713         kfree(ah);
 714         priv->ah = NULL;
 715
 716         return ret;
 717 }
 718
 719 static void ath9k_set_hw_capab(struct ath9k_htc_priv *priv,
 720                                struct ieee80211_hw *hw)
 721 {
 722         struct ath_common *common = ath9k_hw_common(priv->ah);
 723
 724         hw->flags = IEEE80211_HW_SIGNAL_DBM |
 725                 IEEE80211_HW_AMPDU_AGGREGATION |
 726                 IEEE80211_HW_SPECTRUM_MGMT |
 727                 IEEE80211_HW_HAS_RATE_CONTROL |
 728                 IEEE80211_HW_RX_INCLUDES_FCS |
 729                 IEEE80211_HW_SUPPORTS_PS |
 730                 IEEE80211_HW_PS_NULLFUNC_STACK;
 731
 732         hw->wiphy->interface_modes =
 733                 BIT(NL80211_IFTYPE_STATION) |
 734                 BIT(NL80211_IFTYPE_ADHOC);
 735
 736         hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
 737
 738         hw->queues = 4;
 739         hw->channel_change_time = 5000;
 740         hw->max_listen_interval = 10;
 741         hw->vif_data_size = sizeof(struct ath9k_htc_vif);
 742         hw->sta_data_size = sizeof(struct ath9k_htc_sta);
 743
 744         /* tx_frame_hdr is larger than tx_mgmt_hdr anyway */
 745         hw->extra_tx_headroom = sizeof(struct tx_frame_hdr) +
 746                 sizeof(struct htc_frame_hdr) + 4;
 747
 748         if (test_bit(ATH9K_MODE_11G, priv->ah->caps.wireless_modes))
 749                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
 750                         &priv->sbands[IEEE80211_BAND_2GHZ];
 751         if (test_bit(ATH9K_MODE_11A, priv->ah->caps.wireless_modes))
 752                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
 753                         &priv->sbands[IEEE80211_BAND_5GHZ];
 754
 755         if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_HT) {
 756                 if (test_bit(ATH9K_MODE_11G, priv->ah->caps.wireless_modes))
 757                         setup_ht_cap(priv,
 758                                      &priv->sbands[IEEE80211_BAND_2GHZ].ht_cap);
 759                 if (test_bit(ATH9K_MODE_11A, priv->ah->caps.wireless_modes))
 760                         setup_ht_cap(priv,
 761                                      &priv->sbands[IEEE80211_BAND_5GHZ].ht_cap);
 762         }
 763
 764         SET_IEEE80211_PERM_ADDR(hw, common->macaddr);
 765 }
 766
 767 static int ath9k_init_device(struct ath9k_htc_priv *priv,
 768                              u16 devid, char *product)
 769 {
 770         struct ieee80211_hw *hw = priv->hw;
 771         struct ath_common *common;
 772         struct ath_hw *ah;
 773         int error = 0;
 774         struct ath_regulatory *reg;
 775
 776         /* Bring up device */
 777         error = ath9k_init_priv(priv, devid, product);
 778         if (error != 0)
 779                 goto err_init;
 780
 781         ah = priv->ah;
 782         common = ath9k_hw_common(ah);
 783         ath9k_set_hw_capab(priv, hw);
 784
 785         /* Initialize regulatory */
 786         error = ath_regd_init(&common->regulatory, priv->hw->wiphy,
 787                               ath9k_reg_notifier);
 788         if (error)
 789                 goto err_regd;
 790
 791         reg = &common->regulatory;
 792
 793         /* Setup TX */
 794         error = ath9k_tx_init(priv);
 795         if (error != 0)
 796                 goto err_tx;
 797
 798         /* Setup RX */
 799         error = ath9k_rx_init(priv);
 800         if (error != 0)
 801                 goto err_rx;
 802
 803         /* Register with mac80211 */
 804         error = ieee80211_register_hw(hw);
 805         if (error)
 806                 goto err_register;
 807
 808         /* Handle world regulatory */
 809         if (!ath_is_world_regd(reg)) {
 810                 error = regulatory_hint(hw->wiphy, reg->alpha2);
 811                 if (error)
 812                         goto err_world;
 813         }
 814
 815         ath9k_init_leds(priv);
 816         ath9k_start_rfkill_poll(priv);
 817
 818         return 0;
 819
 820 err_world:
 821         ieee80211_unregister_hw(hw);
 822 err_register:
 823         ath9k_rx_cleanup(priv);
 824 err_rx:
 825         ath9k_tx_cleanup(priv);
 826 err_tx:
 827         /* Nothing */
 828 err_regd:
 829         ath9k_deinit_priv(priv);
 830 err_init:
 831         return error;
 832 }
 833
 834 int ath9k_htc_probe_device(struct htc_target *htc_handle, struct device *dev,
 835                            u16 devid, char *product)
 836 {
 837         struct ieee80211_hw *hw;
 838         struct ath9k_htc_priv *priv;
 839         int ret;
 840
 841         hw = ieee80211_alloc_hw(sizeof(struct ath9k_htc_priv), &ath9k_htc_ops);
 842         if (!hw)
 843                 return -ENOMEM;
 844
 845         priv = hw->priv;
 846         priv->hw = hw;
 847         priv->htc = htc_handle;
 848         priv->dev = dev;
 849         htc_handle->drv_priv = priv;
 850         SET_IEEE80211_DEV(hw, priv->dev);
 851
 852         ret = ath9k_htc_wait_for_target(priv);
 853         if (ret)
 854                 goto err_free;
 855
 856         priv->wmi = ath9k_init_wmi(priv);
 857         if (!priv->wmi) {
 858                 ret = -EINVAL;
 859                 goto err_free;
 860         }
 861
 862         ret = ath9k_init_htc_services(priv, devid);
 863         if (ret)
 864                 goto err_init;
 865
 866         /* The device may have been unplugged earlier. */
 867         priv->op_flags &= ~OP_UNPLUGGED;
 868
 869         ret = ath9k_init_device(priv, devid, product);
 870         if (ret)
 871                 goto err_init;
 872
 873         return 0;
 874
 875 err_init:
 876         ath9k_deinit_wmi(priv);
 877 err_free:
 878         ieee80211_free_hw(hw);
 879         return ret;
 880 }
 881
 882 void ath9k_htc_disconnect_device(struct htc_target *htc_handle, bool hotunplug)
 883 {
 884         if (htc_handle->drv_priv) {
 885
 886                 /* Check if the device has been yanked out. */
 887                 if (hotunplug)
 888                         htc_handle->drv_priv->op_flags |= OP_UNPLUGGED;
 889
 890                 ath9k_deinit_device(htc_handle->drv_priv);
 891                 ath9k_deinit_wmi(htc_handle->drv_priv);
 892                 ieee80211_free_hw(htc_handle->drv_priv->hw);
 893         }
 894 }
 895
 896 #ifdef CONFIG_PM
 897 int ath9k_htc_resume(struct htc_target *htc_handle)
 898 {
 899         int ret;
 900
 901         ret = ath9k_htc_wait_for_target(htc_handle->drv_priv);
 902         if (ret)
 903                 return ret;
 904
 905         ret = ath9k_init_htc_services(htc_handle->drv_priv,
 906                               htc_handle->drv_priv->ah->hw_version.devid);
 907         return ret;
 908 }
 909 #endif
 910
 911 static int __init ath9k_htc_init(void)
 912 {
 913         int error;
 914
 915         error = ath9k_htc_debug_create_root();
 916         if (error < 0) {
 917                 printk(KERN_ERR
 918                         "ath9k_htc: Unable to create debugfs root: %d\n",
 919                         error);
 920                 goto err_dbg;
 921         }
 922
 923         error = ath9k_hif_usb_init();
 924         if (error < 0) {
 925                 printk(KERN_ERR
 926                         "ath9k_htc: No USB devices found,"
 927                         " driver not installed.\n");
 928                 error = -ENODEV;
 929                 goto err_usb;
 930         }
 931
 932         return 0;
 933
 934 err_usb:
 935         ath9k_htc_debug_remove_root();
 936 err_dbg:
 937         return error;
 938 }
 939 module_init(ath9k_htc_init);
 940
 941 static void __exit ath9k_htc_exit(void)
 942 {
 943         ath9k_hif_usb_exit();
 944         ath9k_htc_debug_remove_root();
 945         printk(KERN_INFO "ath9k_htc: Driver unloaded\n");
 946 }
 947 module_exit(ath9k_htc_exit);