drivers/net/wireless/rtlwifi/base.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2009-2010  Realtek Corporation.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of version 2 of the GNU General Public License as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along with
  15  * this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  17  *
  18  * The full GNU General Public License is included in this distribution in the
  19  * file called LICENSE.
  20  *
  21  * Contact Information:
  22  * wlanfae <wlanfae@realtek.com>
  23  * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
  24  * Hsinchu 300, Taiwan.
  25  *
  26  * Larry Finger <Larry.Finger@lwfinger.net>
  27  *
  28  *****************************************************************************/
  29
  30 #include <linux/ip.h>
  31 #include "wifi.h"
  32 #include "rc.h"
  33 #include "base.h"
  34 #include "efuse.h"
  35 #include "cam.h"
  36 #include "ps.h"
  37 #include "regd.h"
  38
  39 /*
  40  *NOTICE!!!: This file will be very big, we hsould
  41  *keep it clear under follwing roles:
  42  *
  43  *This file include follwing part, so, if you add new
  44  *functions into this file, please check which part it
  45  *should includes. or check if you should add new part
  46  *for this file:
  47  *
  48  *1) mac80211 init functions
  49  *2) tx information functions
  50  *3) functions called by core.c
  51  *4) wq & timer callback functions
  52  *5) frame process functions
  53  *6) IOT functions
  54  *7) sysfs functions
  55  *8) ...
  56  */
  57
  58 /*********************************************************
  59  *
  60  * mac80211 init functions
  61  *
  62  *********************************************************/
  63 static struct ieee80211_channel rtl_channeltable_2g[] = {
  64         {.center_freq = 2412, .hw_value = 1,},
  65         {.center_freq = 2417, .hw_value = 2,},
  66         {.center_freq = 2422, .hw_value = 3,},
  67         {.center_freq = 2427, .hw_value = 4,},
  68         {.center_freq = 2432, .hw_value = 5,},
  69         {.center_freq = 2437, .hw_value = 6,},
  70         {.center_freq = 2442, .hw_value = 7,},
  71         {.center_freq = 2447, .hw_value = 8,},
  72         {.center_freq = 2452, .hw_value = 9,},
  73         {.center_freq = 2457, .hw_value = 10,},
  74         {.center_freq = 2462, .hw_value = 11,},
  75         {.center_freq = 2467, .hw_value = 12,},
  76         {.center_freq = 2472, .hw_value = 13,},
  77         {.center_freq = 2484, .hw_value = 14,},
  78 };
  79
  80 static struct ieee80211_channel rtl_channeltable_5g[] = {
  81         {.center_freq = 5180, .hw_value = 36,},
  82         {.center_freq = 5200, .hw_value = 40,},
  83         {.center_freq = 5220, .hw_value = 44,},
  84         {.center_freq = 5240, .hw_value = 48,},
  85         {.center_freq = 5260, .hw_value = 52,},
  86         {.center_freq = 5280, .hw_value = 56,},
  87         {.center_freq = 5300, .hw_value = 60,},
  88         {.center_freq = 5320, .hw_value = 64,},
  89         {.center_freq = 5500, .hw_value = 100,},
  90         {.center_freq = 5520, .hw_value = 104,},
  91         {.center_freq = 5540, .hw_value = 108,},
  92         {.center_freq = 5560, .hw_value = 112,},
  93         {.center_freq = 5580, .hw_value = 116,},
  94         {.center_freq = 5600, .hw_value = 120,},
  95         {.center_freq = 5620, .hw_value = 124,},
  96         {.center_freq = 5640, .hw_value = 128,},
  97         {.center_freq = 5660, .hw_value = 132,},
  98         {.center_freq = 5680, .hw_value = 136,},
  99         {.center_freq = 5700, .hw_value = 140,},
 100         {.center_freq = 5745, .hw_value = 149,},
 101         {.center_freq = 5765, .hw_value = 153,},
 102         {.center_freq = 5785, .hw_value = 157,},
 103         {.center_freq = 5805, .hw_value = 161,},
 104         {.center_freq = 5825, .hw_value = 165,},
 105 };
 106
 107 static struct ieee80211_rate rtl_ratetable_2g[] = {
 108         {.bitrate = 10, .hw_value = 0x00,},
 109         {.bitrate = 20, .hw_value = 0x01,},
 110         {.bitrate = 55, .hw_value = 0x02,},
 111         {.bitrate = 110, .hw_value = 0x03,},
 112         {.bitrate = 60, .hw_value = 0x04,},
 113         {.bitrate = 90, .hw_value = 0x05,},
 114         {.bitrate = 120, .hw_value = 0x06,},
 115         {.bitrate = 180, .hw_value = 0x07,},
 116         {.bitrate = 240, .hw_value = 0x08,},
 117         {.bitrate = 360, .hw_value = 0x09,},
 118         {.bitrate = 480, .hw_value = 0x0a,},
 119         {.bitrate = 540, .hw_value = 0x0b,},
 120 };
 121
 122 static struct ieee80211_rate rtl_ratetable_5g[] = {
 123         {.bitrate = 60, .hw_value = 0x04,},
 124         {.bitrate = 90, .hw_value = 0x05,},
 125         {.bitrate = 120, .hw_value = 0x06,},
 126         {.bitrate = 180, .hw_value = 0x07,},
 127         {.bitrate = 240, .hw_value = 0x08,},
 128         {.bitrate = 360, .hw_value = 0x09,},
 129         {.bitrate = 480, .hw_value = 0x0a,},
 130         {.bitrate = 540, .hw_value = 0x0b,},
 131 };
 132
 133 static const struct ieee80211_supported_band rtl_band_2ghz = {
 134         .band = IEEE80211_BAND_2GHZ,
 135
 136         .channels = rtl_channeltable_2g,
 137         .n_channels = ARRAY_SIZE(rtl_channeltable_2g),
 138
 139         .bitrates = rtl_ratetable_2g,
 140         .n_bitrates = ARRAY_SIZE(rtl_ratetable_2g),
 141
 142         .ht_cap = {0},
 143 };
 144
 145 static struct ieee80211_supported_band rtl_band_5ghz = {
 146         .band = IEEE80211_BAND_5GHZ,
 147
 148         .channels = rtl_channeltable_5g,
 149         .n_channels = ARRAY_SIZE(rtl_channeltable_5g),
 150
 151         .bitrates = rtl_ratetable_5g,
 152         .n_bitrates = ARRAY_SIZE(rtl_ratetable_5g),
 153
 154         .ht_cap = {0},
 155 };
 156
 157 static const u8 tid_to_ac[] = {
 158         2, /* IEEE80211_AC_BE */
 159         3, /* IEEE80211_AC_BK */
 160         3, /* IEEE80211_AC_BK */
 161         2, /* IEEE80211_AC_BE */
 162         1, /* IEEE80211_AC_VI */
 163         1, /* IEEE80211_AC_VI */
 164         0, /* IEEE80211_AC_VO */
 165         0, /* IEEE80211_AC_VO */
 166 };
 167
 168 u8 rtl_tid_to_ac(struct ieee80211_hw *hw, u8 tid)
 169 {
 170         return tid_to_ac[tid];
 171 }
 172
 173 static void _rtl_init_hw_ht_capab(struct ieee80211_hw *hw,
 174                                   struct ieee80211_sta_ht_cap *ht_cap)
 175 {
 176         struct rtl_priv *rtlpriv = rtl_priv(hw);
 177         struct rtl_phy *rtlphy = &(rtlpriv->phy);
 178
 179         ht_cap->ht_supported = true;
 180         ht_cap->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
 181             IEEE80211_HT_CAP_SGI_40 |
 182             IEEE80211_HT_CAP_SGI_20 |
 183             IEEE80211_HT_CAP_DSSSCCK40 | IEEE80211_HT_CAP_MAX_AMSDU;
 184
 185         if (rtlpriv->rtlhal.disable_amsdu_8k)
 186                 ht_cap->cap &= ~IEEE80211_HT_CAP_MAX_AMSDU;
 187
 188         /*
 189          *Maximum length of AMPDU that the STA can receive.
 190          *Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
 191          */
 192         ht_cap->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
 193
 194         /*Minimum MPDU start spacing , */
 195         ht_cap->ampdu_density = IEEE80211_HT_MPDU_DENSITY_16;
 196
 197         ht_cap->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
 198
 199         /*
 200          *hw->wiphy->bands[IEEE80211_BAND_2GHZ]
 201          *base on ant_num
 202          *rx_mask: RX mask
 203          *if rx_ant =1 rx_mask[0]=0xff;==>MCS0-MCS7
 204          *if rx_ant =2 rx_mask[1]=0xff;==>MCS8-MCS15
 205          *if rx_ant >=3 rx_mask[2]=0xff;
 206          *if BW_40 rx_mask[4]=0x01;
 207          *highest supported RX rate
 208          */
 209         if (get_rf_type(rtlphy) == RF_1T2R || get_rf_type(rtlphy) == RF_2T2R) {
 210
 211                 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, ("1T2R or 2T2R\n"));
 212
 213                 ht_cap->mcs.rx_mask[0] = 0xFF;
 214                 ht_cap->mcs.rx_mask[1] = 0xFF;
 215                 ht_cap->mcs.rx_mask[4] = 0x01;
 216
 217                 ht_cap->mcs.rx_highest = cpu_to_le16(MAX_BIT_RATE_40MHZ_MCS15);
 218         } else if (get_rf_type(rtlphy) == RF_1T1R) {
 219
 220                 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, ("1T1R\n"));
 221
 222                 ht_cap->mcs.rx_mask[0] = 0xFF;
 223                 ht_cap->mcs.rx_mask[1] = 0x00;
 224                 ht_cap->mcs.rx_mask[4] = 0x01;
 225
 226                 ht_cap->mcs.rx_highest = cpu_to_le16(MAX_BIT_RATE_40MHZ_MCS7);
 227         }
 228 }
 229
 230 static void _rtl_init_mac80211(struct ieee80211_hw *hw)
 231 {
 232         struct rtl_priv *rtlpriv = rtl_priv(hw);
 233         struct rtl_hal *rtlhal = rtl_hal(rtlpriv);
 234         struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
 235         struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
 236         struct ieee80211_supported_band *sband;
 237
 238
 239         if (rtlhal->macphymode == SINGLEMAC_SINGLEPHY && rtlhal->bandset ==
 240             BAND_ON_BOTH) {
 241                 /* 1: 2.4 G bands */
 242                 /* <1> use  mac->bands as mem for hw->wiphy->bands */
 243                 sband = &(rtlmac->bands[IEEE80211_BAND_2GHZ]);
 244
 245                 /* <2> set hw->wiphy->bands[IEEE80211_BAND_2GHZ]
 246                  * to default value(1T1R) */
 247                 memcpy(&(rtlmac->bands[IEEE80211_BAND_2GHZ]), &rtl_band_2ghz,
 248                                 sizeof(struct ieee80211_supported_band));
 249
 250                 /* <3> init ht cap base on ant_num */
 251                 _rtl_init_hw_ht_capab(hw, &sband->ht_cap);
 252
 253                 /* <4> set mac->sband to wiphy->sband */
 254                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = sband;
 255
 256                 /* 2: 5 G bands */
 257                 /* <1> use  mac->bands as mem for hw->wiphy->bands */
 258                 sband = &(rtlmac->bands[IEEE80211_BAND_5GHZ]);
 259
 260                 /* <2> set hw->wiphy->bands[IEEE80211_BAND_5GHZ]
 261                  * to default value(1T1R) */
 262                 memcpy(&(rtlmac->bands[IEEE80211_BAND_5GHZ]), &rtl_band_5ghz,
 263                                 sizeof(struct ieee80211_supported_band));
 264
 265                 /* <3> init ht cap base on ant_num */
 266                 _rtl_init_hw_ht_capab(hw, &sband->ht_cap);
 267
 268                 /* <4> set mac->sband to wiphy->sband */
 269                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = sband;
 270         } else {
 271                 if (rtlhal->current_bandtype == BAND_ON_2_4G) {
 272                         /* <1> use  mac->bands as mem for hw->wiphy->bands */
 273                         sband = &(rtlmac->bands[IEEE80211_BAND_2GHZ]);
 274
 275                         /* <2> set hw->wiphy->bands[IEEE80211_BAND_2GHZ]
 276                          * to default value(1T1R) */
 277                         memcpy(&(rtlmac->bands[IEEE80211_BAND_2GHZ]),
 278                                  &rtl_band_2ghz,
 279                                  sizeof(struct ieee80211_supported_band));
 280
 281                         /* <3> init ht cap base on ant_num */
 282                         _rtl_init_hw_ht_capab(hw, &sband->ht_cap);
 283
 284                         /* <4> set mac->sband to wiphy->sband */
 285                         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = sband;
 286                 } else if (rtlhal->current_bandtype == BAND_ON_5G) {
 287                         /* <1> use  mac->bands as mem for hw->wiphy->bands */
 288                         sband = &(rtlmac->bands[IEEE80211_BAND_5GHZ]);
 289
 290                         /* <2> set hw->wiphy->bands[IEEE80211_BAND_5GHZ]
 291                          * to default value(1T1R) */
 292                         memcpy(&(rtlmac->bands[IEEE80211_BAND_5GHZ]),
 293                                  &rtl_band_5ghz,
 294                                  sizeof(struct ieee80211_supported_band));
 295
 296                         /* <3> init ht cap base on ant_num */
 297                         _rtl_init_hw_ht_capab(hw, &sband->ht_cap);
 298
 299                         /* <4> set mac->sband to wiphy->sband */
 300                         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = sband;
 301                 } else {
 302                         RT_TRACE(rtlpriv, COMP_INIT, DBG_EMERG,
 303                                  ("Err BAND %d\n",
 304                                  rtlhal->current_bandtype));
 305                 }
 306         }
 307         /* <5> set hw caps */
 308         hw->flags = IEEE80211_HW_SIGNAL_DBM |
 309             IEEE80211_HW_RX_INCLUDES_FCS |
 310             IEEE80211_HW_BEACON_FILTER |
 311             IEEE80211_HW_AMPDU_AGGREGATION |
 312             IEEE80211_HW_REPORTS_TX_ACK_STATUS | 0;
 313
 314         /* swlps or hwlps has been set in diff chip in init_sw_vars */
 315         if (rtlpriv->psc.swctrl_lps)
 316                 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
 317                         IEEE80211_HW_PS_NULLFUNC_STACK |
 318                         /* IEEE80211_HW_SUPPORTS_DYNAMIC_PS | */
 319                         0;
 320
 321         hw->wiphy->interface_modes =
 322             BIT(NL80211_IFTYPE_AP) |
 323             BIT(NL80211_IFTYPE_STATION) |
 324             BIT(NL80211_IFTYPE_ADHOC);
 325
 326         hw->wiphy->rts_threshold = 2347;
 327
 328         hw->queues = AC_MAX;
 329         hw->extra_tx_headroom = RTL_TX_HEADER_SIZE;
 330
 331         /* TODO: Correct this value for our hw */
 332         /* TODO: define these hard code value */
 333         hw->channel_change_time = 100;
 334         hw->max_listen_interval = 10;
 335         hw->max_rate_tries = 4;
 336         /* hw->max_rates = 1; */
 337         hw->sta_data_size = sizeof(struct rtl_sta_info);
 338
 339         /* <6> mac address */
 340         if (is_valid_ether_addr(rtlefuse->dev_addr)) {
 341                 SET_IEEE80211_PERM_ADDR(hw, rtlefuse->dev_addr);
 342         } else {
 343                 u8 rtlmac[] = { 0x00, 0xe0, 0x4c, 0x81, 0x92, 0x00 };
 344                 get_random_bytes((rtlmac + (ETH_ALEN - 1)), 1);
 345                 SET_IEEE80211_PERM_ADDR(hw, rtlmac);
 346         }
 347
 348 }
 349
 350 static void _rtl_init_deferred_work(struct ieee80211_hw *hw)
 351 {
 352         struct rtl_priv *rtlpriv = rtl_priv(hw);
 353
 354         /* <1> timer */
 355         init_timer(&rtlpriv->works.watchdog_timer);
 356         setup_timer(&rtlpriv->works.watchdog_timer,
 357                     rtl_watch_dog_timer_callback, (unsigned long)hw);
 358
 359         /* <2> work queue */
 360         rtlpriv->works.hw = hw;
 361         rtlpriv->works.rtl_wq = alloc_workqueue(rtlpriv->cfg->name, 0, 0);
 362         INIT_DELAYED_WORK(&rtlpriv->works.watchdog_wq,
 363                           (void *)rtl_watchdog_wq_callback);
 364         INIT_DELAYED_WORK(&rtlpriv->works.ips_nic_off_wq,
 365                           (void *)rtl_ips_nic_off_wq_callback);
 366         INIT_DELAYED_WORK(&rtlpriv->works.ps_work,
 367                           (void *)rtl_swlps_wq_callback);
 368         INIT_DELAYED_WORK(&rtlpriv->works.ps_rfon_wq,
 369                           (void *)rtl_swlps_rfon_wq_callback);
 370
 371 }
 372
 373 void rtl_deinit_deferred_work(struct ieee80211_hw *hw)
 374 {
 375         struct rtl_priv *rtlpriv = rtl_priv(hw);
 376
 377         del_timer_sync(&rtlpriv->works.watchdog_timer);
 378
 379         cancel_delayed_work(&rtlpriv->works.watchdog_wq);
 380         cancel_delayed_work(&rtlpriv->works.ips_nic_off_wq);
 381         cancel_delayed_work(&rtlpriv->works.ps_work);
 382         cancel_delayed_work(&rtlpriv->works.ps_rfon_wq);
 383 }
 384
 385 void rtl_init_rfkill(struct ieee80211_hw *hw)
 386 {
 387         struct rtl_priv *rtlpriv = rtl_priv(hw);
 388
 389         bool radio_state;
 390         bool blocked;
 391         u8 valid = 0;
 392
 393         /*set init state to on */
 394         rtlpriv->rfkill.rfkill_state = 1;
 395         wiphy_rfkill_set_hw_state(hw->wiphy, 0);
 396
 397         radio_state = rtlpriv->cfg->ops->radio_onoff_checking(hw, &valid);
 398
 399         if (valid) {
 400                 printk(KERN_INFO "rtlwifi: wireless switch is %s\n",
 401                                 rtlpriv->rfkill.rfkill_state ? "on" : "off");
 402
 403                 rtlpriv->rfkill.rfkill_state = radio_state;
 404
 405                 blocked = (rtlpriv->rfkill.rfkill_state == 1) ? 0 : 1;
 406                 wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
 407         }
 408
 409         wiphy_rfkill_start_polling(hw->wiphy);
 410 }
 411
 412 void rtl_deinit_rfkill(struct ieee80211_hw *hw)
 413 {
 414         wiphy_rfkill_stop_polling(hw->wiphy);
 415 }
 416
 417 int rtl_init_core(struct ieee80211_hw *hw)
 418 {
 419         struct rtl_priv *rtlpriv = rtl_priv(hw);
 420         struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
 421
 422         /* <1> init mac80211 */
 423         _rtl_init_mac80211(hw);
 424         rtlmac->hw = hw;
 425
 426         /* <2> rate control register */
 427         hw->rate_control_algorithm = "rtl_rc";
 428
 429         /*
 430          * <3> init CRDA must come after init
 431          * mac80211 hw  in _rtl_init_mac80211.
 432          */
 433         if (rtl_regd_init(hw, rtl_reg_notifier)) {
 434                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, ("REGD init failed\n"));
 435                 return 1;
 436         } else {
 437                 /* CRDA regd hint must after init CRDA */
 438                 if (regulatory_hint(hw->wiphy, rtlpriv->regd.alpha2)) {
 439                         RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
 440                                  ("regulatory_hint fail\n"));
 441                 }
 442         }
 443
 444         /* <4> locks */
 445         mutex_init(&rtlpriv->locks.conf_mutex);
 446         spin_lock_init(&rtlpriv->locks.ips_lock);
 447         spin_lock_init(&rtlpriv->locks.irq_th_lock);
 448         spin_lock_init(&rtlpriv->locks.h2c_lock);
 449         spin_lock_init(&rtlpriv->locks.rf_ps_lock);
 450         spin_lock_init(&rtlpriv->locks.rf_lock);
 451         spin_lock_init(&rtlpriv->locks.lps_lock);
 452         spin_lock_init(&rtlpriv->locks.waitq_lock);
 453         spin_lock_init(&rtlpriv->locks.cck_and_rw_pagea_lock);
 454
 455         rtlmac->link_state = MAC80211_NOLINK;
 456
 457         /* <5> init deferred work */
 458         _rtl_init_deferred_work(hw);
 459
 460         return 0;
 461 }
 462
 463 void rtl_deinit_core(struct ieee80211_hw *hw)
 464 {
 465 }
 466
 467 void rtl_init_rx_config(struct ieee80211_hw *hw)
 468 {
 469         struct rtl_priv *rtlpriv = rtl_priv(hw);
 470         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 471
 472         rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_RCR, (u8 *) (&mac->rx_conf));
 473 }
 474
 475 /*********************************************************
 476  *
 477  * tx information functions
 478  *
 479  *********************************************************/
 480 static void _rtl_qurey_shortpreamble_mode(struct ieee80211_hw *hw,
 481                                           struct rtl_tcb_desc *tcb_desc,
 482                                           struct ieee80211_tx_info *info)
 483 {
 484         struct rtl_priv *rtlpriv = rtl_priv(hw);
 485         u8 rate_flag = info->control.rates[0].flags;
 486
 487         tcb_desc->use_shortpreamble = false;
 488
 489         /* 1M can only use Long Preamble. 11B spec */
 490         if (tcb_desc->hw_rate == rtlpriv->cfg->maps[RTL_RC_CCK_RATE1M])
 491                 return;
 492         else if (rate_flag & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
 493                 tcb_desc->use_shortpreamble = true;
 494
 495         return;
 496 }
 497
 498 static void _rtl_query_shortgi(struct ieee80211_hw *hw,
 499                                struct ieee80211_sta *sta,
 500                                struct rtl_tcb_desc *tcb_desc,
 501                                struct ieee80211_tx_info *info)
 502 {
 503         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 504         u8 rate_flag = info->control.rates[0].flags;
 505         u8 sgi_40 = 0, sgi_20 = 0, bw_40 = 0;
 506         tcb_desc->use_shortgi = false;
 507
 508         if (sta == NULL)
 509                 return;
 510
 511         sgi_40 = sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40;
 512         sgi_20 = sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_20;
 513
 514         if (!(sta->ht_cap.ht_supported))
 515                 return;
 516
 517         if (!sgi_40 && !sgi_20)
 518                 return;
 519
 520         if (mac->opmode == NL80211_IFTYPE_STATION)
 521                 bw_40 = mac->bw_40;
 522         else if (mac->opmode == NL80211_IFTYPE_AP ||
 523                 mac->opmode == NL80211_IFTYPE_ADHOC)
 524                 bw_40 = sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40;
 525
 526         if (bw_40 && sgi_40)
 527                 tcb_desc->use_shortgi = true;
 528         else if ((bw_40 == false) && sgi_20)
 529                 tcb_desc->use_shortgi = true;
 530
 531         if (!(rate_flag & IEEE80211_TX_RC_SHORT_GI))
 532                 tcb_desc->use_shortgi = false;
 533 }
 534
 535 static void _rtl_query_protection_mode(struct ieee80211_hw *hw,
 536                                        struct rtl_tcb_desc *tcb_desc,
 537                                        struct ieee80211_tx_info *info)
 538 {
 539         struct rtl_priv *rtlpriv = rtl_priv(hw);
 540         u8 rate_flag = info->control.rates[0].flags;
 541
 542         /* Common Settings */
 543         tcb_desc->rts_stbc = false;
 544         tcb_desc->cts_enable = false;
 545         tcb_desc->rts_sc = 0;
 546         tcb_desc->rts_bw = false;
 547         tcb_desc->rts_use_shortpreamble = false;
 548         tcb_desc->rts_use_shortgi = false;
 549
 550         if (rate_flag & IEEE80211_TX_RC_USE_CTS_PROTECT) {
 551                 /* Use CTS-to-SELF in protection mode. */
 552                 tcb_desc->rts_enable = true;
 553                 tcb_desc->cts_enable = true;
 554                 tcb_desc->rts_rate = rtlpriv->cfg->maps[RTL_RC_OFDM_RATE24M];
 555         } else if (rate_flag & IEEE80211_TX_RC_USE_RTS_CTS) {
 556                 /* Use RTS-CTS in protection mode. */
 557                 tcb_desc->rts_enable = true;
 558                 tcb_desc->rts_rate = rtlpriv->cfg->maps[RTL_RC_OFDM_RATE24M];
 559         }
 560 }
 561
 562 static void _rtl_txrate_selectmode(struct ieee80211_hw *hw,
 563                                    struct ieee80211_sta *sta,
 564                                    struct rtl_tcb_desc *tcb_desc)
 565 {
 566         struct rtl_priv *rtlpriv = rtl_priv(hw);
 567         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 568         struct rtl_sta_info *sta_entry = NULL;
 569         u8 ratr_index = 7;
 570
 571         if (sta) {
 572                 sta_entry = (struct rtl_sta_info *) sta->drv_priv;
 573                 ratr_index = sta_entry->ratr_index;
 574         }
 575         if (!tcb_desc->disable_ratefallback || !tcb_desc->use_driver_rate) {
 576                 if (mac->opmode == NL80211_IFTYPE_STATION) {
 577                         tcb_desc->ratr_index = 0;
 578                 } else if (mac->opmode == NL80211_IFTYPE_ADHOC) {
 579                         if (tcb_desc->multicast || tcb_desc->broadcast) {
 580                                 tcb_desc->hw_rate =
 581                                     rtlpriv->cfg->maps[RTL_RC_CCK_RATE2M];
 582                                 tcb_desc->use_driver_rate = 1;
 583                         } else {
 584                                 /* TODO */
 585                         }
 586                         tcb_desc->ratr_index = ratr_index;
 587                 } else if (mac->opmode == NL80211_IFTYPE_AP) {
 588                         tcb_desc->ratr_index = ratr_index;
 589                 }
 590         }
 591
 592         if (rtlpriv->dm.useramask) {
 593                 /* TODO we will differentiate adhoc and station futrue  */
 594                 if (mac->opmode == NL80211_IFTYPE_STATION) {
 595                         tcb_desc->mac_id = 0;
 596
 597                         if (mac->mode == WIRELESS_MODE_N_24G)
 598                                 tcb_desc->ratr_index = RATR_INX_WIRELESS_NGB;
 599                         else if (mac->mode == WIRELESS_MODE_N_5G)
 600                                 tcb_desc->ratr_index = RATR_INX_WIRELESS_NG;
 601                         else if (mac->mode & WIRELESS_MODE_G)
 602                                 tcb_desc->ratr_index = RATR_INX_WIRELESS_GB;
 603                         else if (mac->mode & WIRELESS_MODE_B)
 604                                 tcb_desc->ratr_index = RATR_INX_WIRELESS_B;
 605                         else if (mac->mode & WIRELESS_MODE_A)
 606                                 tcb_desc->ratr_index = RATR_INX_WIRELESS_G;
 607                 } else if (mac->opmode == NL80211_IFTYPE_AP ||
 608                         mac->opmode == NL80211_IFTYPE_ADHOC) {
 609                         if (NULL != sta) {
 610                                 if (sta->aid > 0)
 611                                         tcb_desc->mac_id = sta->aid + 1;
 612                                 else
 613                                         tcb_desc->mac_id = 1;
 614                         } else {
 615                                 tcb_desc->mac_id = 0;
 616                         }
 617                 }
 618         }
 619
 620 }
 621
 622 static void _rtl_query_bandwidth_mode(struct ieee80211_hw *hw,
 623                                       struct ieee80211_sta *sta,
 624                                       struct rtl_tcb_desc *tcb_desc)
 625 {
 626         struct rtl_priv *rtlpriv = rtl_priv(hw);
 627         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 628
 629         tcb_desc->packet_bw = false;
 630         if (!sta)
 631                 return;
 632         if (mac->opmode == NL80211_IFTYPE_AP ||
 633             mac->opmode == NL80211_IFTYPE_ADHOC) {
 634                 if (!(sta->ht_cap.ht_supported) ||
 635                     !(sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40))
 636                         return;
 637         } else if (mac->opmode == NL80211_IFTYPE_STATION) {
 638                 if (!mac->bw_40 || !(sta->ht_cap.ht_supported))
 639                         return;
 640         }
 641         if (tcb_desc->multicast || tcb_desc->broadcast)
 642                 return;
 643
 644         /*use legency rate, shall use 20MHz */
 645         if (tcb_desc->hw_rate <= rtlpriv->cfg->maps[RTL_RC_OFDM_RATE54M])
 646                 return;
 647
 648         tcb_desc->packet_bw = true;
 649 }
 650
 651 static u8 _rtl_get_highest_n_rate(struct ieee80211_hw *hw)
 652 {
 653         struct rtl_priv *rtlpriv = rtl_priv(hw);
 654         struct rtl_phy *rtlphy = &(rtlpriv->phy);
 655         u8 hw_rate;
 656
 657         if (get_rf_type(rtlphy) == RF_2T2R)
 658                 hw_rate = rtlpriv->cfg->maps[RTL_RC_HT_RATEMCS15];
 659         else
 660                 hw_rate = rtlpriv->cfg->maps[RTL_RC_HT_RATEMCS7];
 661
 662         return hw_rate;
 663 }
 664
 665 void rtl_get_tcb_desc(struct ieee80211_hw *hw,
 666                       struct ieee80211_tx_info *info,
 667                       struct ieee80211_sta *sta,
 668                       struct sk_buff *skb, struct rtl_tcb_desc *tcb_desc)
 669 {
 670         struct rtl_priv *rtlpriv = rtl_priv(hw);
 671         struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
 672         struct ieee80211_hdr *hdr = rtl_get_hdr(skb);
 673         struct ieee80211_rate *txrate;
 674         __le16 fc = hdr->frame_control;
 675
 676         txrate = ieee80211_get_tx_rate(hw, info);
 677         tcb_desc->hw_rate = txrate->hw_value;
 678
 679         if (ieee80211_is_data(fc)) {
 680                 /*
 681                  *we set data rate INX 0
 682                  *in rtl_rc.c   if skb is special data or
 683                  *mgt which need low data rate.
 684                  */
 685
 686                 /*
 687                  *So tcb_desc->hw_rate is just used for
 688                  *special data and mgt frames
 689                  */
 690                 if (info->control.rates[0].idx == 0 &&
 691                                 ieee80211_is_nullfunc(fc)) {
 692                         tcb_desc->use_driver_rate = true;
 693                         tcb_desc->ratr_index = RATR_INX_WIRELESS_MC;
 694
 695                         tcb_desc->disable_ratefallback = 1;
 696                 } else {
 697                         /*
 698                          *because hw will nerver use hw_rate
 699                          *when tcb_desc->use_driver_rate = false
 700                          *so we never set highest N rate here,
 701                          *and N rate will all be controlled by FW
 702                          *when tcb_desc->use_driver_rate = false
 703                          */
 704                         if (sta && (sta->ht_cap.ht_supported)) {
 705                                 tcb_desc->hw_rate = _rtl_get_highest_n_rate(hw);
 706                         } else {
 707                                 if (rtlmac->mode == WIRELESS_MODE_B) {
 708                                         tcb_desc->hw_rate =
 709                                            rtlpriv->cfg->maps[RTL_RC_CCK_RATE11M];
 710                                 } else {
 711                                         tcb_desc->hw_rate =
 712                                            rtlpriv->cfg->maps[RTL_RC_OFDM_RATE54M];
 713                                 }
 714                         }
 715                 }
 716
 717                 if (is_multicast_ether_addr(ieee80211_get_DA(hdr)))
 718                         tcb_desc->multicast = 1;
 719                 else if (is_broadcast_ether_addr(ieee80211_get_DA(hdr)))
 720                         tcb_desc->broadcast = 1;
 721
 722                 _rtl_txrate_selectmode(hw, sta, tcb_desc);
 723                 _rtl_query_bandwidth_mode(hw, sta, tcb_desc);
 724                 _rtl_qurey_shortpreamble_mode(hw, tcb_desc, info);
 725                 _rtl_query_shortgi(hw, sta, tcb_desc, info);
 726                 _rtl_query_protection_mode(hw, tcb_desc, info);
 727         } else {
 728                 tcb_desc->use_driver_rate = true;
 729                 tcb_desc->ratr_index = RATR_INX_WIRELESS_MC;
 730                 tcb_desc->disable_ratefallback = 1;
 731                 tcb_desc->mac_id = 0;
 732                 tcb_desc->packet_bw = false;
 733         }
 734 }
 735 EXPORT_SYMBOL(rtl_get_tcb_desc);
 736
 737 bool rtl_action_proc(struct ieee80211_hw *hw, struct sk_buff *skb, u8 is_tx)
 738 {
 739         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 740         struct ieee80211_hdr *hdr = rtl_get_hdr(skb);
 741         struct rtl_priv *rtlpriv = rtl_priv(hw);
 742         __le16 fc = hdr->frame_control;
 743         u8 *act = (u8 *) (((u8 *) skb->data + MAC80211_3ADDR_LEN));
 744         u8 category;
 745
 746         if (!ieee80211_is_action(fc))
 747                 return true;
 748
 749         category = *act;
 750         act++;
 751         switch (category) {
 752         case ACT_CAT_BA:
 753                 switch (*act) {
 754                 case ACT_ADDBAREQ:
 755                         if (mac->act_scanning)
 756                                 return false;
 757
 758                         RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
 759                                  ("%s ACT_ADDBAREQ From :" MAC_FMT "\n",
 760                                   is_tx ? "Tx" : "Rx", MAC_ARG(hdr->addr2)));
 761                         break;
 762                 case ACT_ADDBARSP:
 763                         RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
 764                                  ("%s ACT_ADDBARSP From :" MAC_FMT "\n",
 765                                   is_tx ? "Tx" : "Rx", MAC_ARG(hdr->addr2)));
 766                         break;
 767                 case ACT_DELBA:
 768                         RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
 769                                  ("ACT_ADDBADEL From :" MAC_FMT "\n",
 770                                   MAC_ARG(hdr->addr2)));
 771                         break;
 772                 }
 773                 break;
 774         default:
 775                 break;
 776         }
 777
 778         return true;
 779 }
 780
 781 /*should call before software enc*/
 782 u8 rtl_is_special_data(struct ieee80211_hw *hw, struct sk_buff *skb, u8 is_tx)
 783 {
 784         struct rtl_priv *rtlpriv = rtl_priv(hw);
 785         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
 786         __le16 fc = rtl_get_fc(skb);
 787         u16 ether_type;
 788         u8 mac_hdr_len = ieee80211_get_hdrlen_from_skb(skb);
 789         const struct iphdr *ip;
 790
 791         if (!ieee80211_is_data(fc))
 792                 return false;
 793
 794
 795         ip = (struct iphdr *)((u8 *) skb->data + mac_hdr_len +
 796                               SNAP_SIZE + PROTOC_TYPE_SIZE);
 797         ether_type = *(u16 *) ((u8 *) skb->data + mac_hdr_len + SNAP_SIZE);
 798         /*      ether_type = ntohs(ether_type); */
 799
 800         if (ETH_P_IP == ether_type) {
 801                 if (IPPROTO_UDP == ip->protocol) {
 802                         struct udphdr *udp = (struct udphdr *)((u8 *) ip +
 803                                                                (ip->ihl << 2));
 804                         if (((((u8 *) udp)[1] == 68) &&
 805                              (((u8 *) udp)[3] == 67)) ||
 806                             ((((u8 *) udp)[1] == 67) &&
 807                              (((u8 *) udp)[3] == 68))) {
 808                                 /*
 809                                  * 68 : UDP BOOTP client
 810                                  * 67 : UDP BOOTP server
 811                                  */
 812                                 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV),
 813                                          DBG_DMESG, ("dhcp %s !!\n",
 814                                                      (is_tx) ? "Tx" : "Rx"));
 815
 816                                 if (is_tx) {
 817                                         rtl_lps_leave(hw);
 818                                         ppsc->last_delaylps_stamp_jiffies =
 819                                             jiffies;
 820                                 }
 821
 822                                 return true;
 823                         }
 824                 }
 825         } else if (ETH_P_ARP == ether_type) {
 826                 if (is_tx) {
 827                         rtl_lps_leave(hw);
 828                         ppsc->last_delaylps_stamp_jiffies = jiffies;
 829                 }
 830
 831                 return true;
 832         } else if (ETH_P_PAE == ether_type) {
 833                 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
 834                          ("802.1X %s EAPOL pkt!!\n", (is_tx) ? "Tx" : "Rx"));
 835
 836                 if (is_tx) {
 837                         rtl_lps_leave(hw);
 838                         ppsc->last_delaylps_stamp_jiffies = jiffies;
 839                 }
 840
 841                 return true;
 842         } else if (ETH_P_IPV6 == ether_type) {
 843                 /* IPv6 */
 844                 return true;
 845         }
 846
 847         return false;
 848 }
 849
 850 /*********************************************************
 851  *
 852  * functions called by core.c
 853  *
 854  *********************************************************/
 855 int rtl_tx_agg_start(struct ieee80211_hw *hw,
 856                 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
 857 {
 858         struct rtl_priv *rtlpriv = rtl_priv(hw);
 859         struct rtl_tid_data *tid_data;
 860         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 861         struct rtl_sta_info *sta_entry = NULL;
 862
 863         if (sta == NULL)
 864                 return -EINVAL;
 865
 866         if (unlikely(tid >= MAX_TID_COUNT))
 867                 return -EINVAL;
 868
 869         sta_entry = (struct rtl_sta_info *)sta->drv_priv;
 870         if (!sta_entry)
 871                 return -ENXIO;
 872         tid_data = &sta_entry->tids[tid];
 873
 874         RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG,
 875                  ("on ra = %pM tid = %d seq:%d\n", sta->addr, tid,
 876                  tid_data->seq_number));
 877
 878         *ssn = tid_data->seq_number;
 879         tid_data->agg.agg_state = RTL_AGG_START;
 880
 881         ieee80211_start_tx_ba_cb_irqsafe(mac->vif, sta->addr, tid);
 882
 883         return 0;
 884 }
 885
 886 int rtl_tx_agg_stop(struct ieee80211_hw *hw,
 887                 struct ieee80211_sta *sta, u16 tid)
 888 {
 889         struct rtl_priv *rtlpriv = rtl_priv(hw);
 890         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 891         struct rtl_sta_info *sta_entry = NULL;
 892
 893         if (sta == NULL)
 894                 return -EINVAL;
 895
 896         if (!sta->addr) {
 897                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, ("ra = NULL\n"));
 898                 return -EINVAL;
 899         }
 900
 901         RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG,
 902                  ("on ra = %pM tid = %d\n", sta->addr, tid));
 903
 904         if (unlikely(tid >= MAX_TID_COUNT))
 905                 return -EINVAL;
 906
 907         sta_entry = (struct rtl_sta_info *)sta->drv_priv;
 908         sta_entry->tids[tid].agg.agg_state = RTL_AGG_STOP;
 909
 910         ieee80211_stop_tx_ba_cb_irqsafe(mac->vif, sta->addr, tid);
 911
 912         return 0;
 913 }
 914
 915 int rtl_tx_agg_oper(struct ieee80211_hw *hw,
 916                 struct ieee80211_sta *sta, u16 tid)
 917 {
 918         struct rtl_priv *rtlpriv = rtl_priv(hw);
 919         struct rtl_sta_info *sta_entry = NULL;
 920
 921         if (sta == NULL)
 922                 return -EINVAL;
 923
 924         if (!sta->addr) {
 925                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, ("ra = NULL\n"));
 926                 return -EINVAL;
 927         }
 928
 929         RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG,
 930                  ("on ra = %pM tid = %d\n", sta->addr, tid));
 931
 932         if (unlikely(tid >= MAX_TID_COUNT))
 933                 return -EINVAL;
 934
 935         sta_entry = (struct rtl_sta_info *)sta->drv_priv;
 936         sta_entry->tids[tid].agg.agg_state = RTL_AGG_OPERATIONAL;
 937
 938         return 0;
 939 }
 940
 941 /*********************************************************
 942  *
 943  * wq & timer callback functions
 944  *
 945  *********************************************************/
 946 void rtl_watchdog_wq_callback(void *data)
 947 {
 948         struct rtl_works *rtlworks = container_of_dwork_rtl(data,
 949                                                             struct rtl_works,
 950                                                             watchdog_wq);
 951         struct ieee80211_hw *hw = rtlworks->hw;
 952         struct rtl_priv *rtlpriv = rtl_priv(hw);
 953         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
 954         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 955         bool busytraffic = false;
 956         bool higher_busytraffic = false;
 957         bool higher_busyrxtraffic = false;
 958         u8 idx, tid;
 959         u32 rx_cnt_inp4eriod = 0;
 960         u32 tx_cnt_inp4eriod = 0;
 961         u32 aver_rx_cnt_inperiod = 0;
 962         u32 aver_tx_cnt_inperiod = 0;
 963         u32 aver_tidtx_inperiod[MAX_TID_COUNT] = {0};
 964         u32 tidtx_inp4eriod[MAX_TID_COUNT] = {0};
 965         bool enter_ps = false;
 966
 967         if (is_hal_stop(rtlhal))
 968                 return;
 969
 970         /* <1> Determine if action frame is allowed */
 971         if (mac->link_state > MAC80211_NOLINK) {
 972                 if (mac->cnt_after_linked < 20)
 973                         mac->cnt_after_linked++;
 974         } else {
 975                 mac->cnt_after_linked = 0;
 976         }
 977
 978         /*
 979          *<3> to check if traffic busy, if
 980          * busytraffic we don't change channel
 981          */
 982         if (mac->link_state >= MAC80211_LINKED) {
 983
 984                 /* (1) get aver_rx_cnt_inperiod & aver_tx_cnt_inperiod */
 985                 for (idx = 0; idx <= 2; idx++) {
 986                         rtlpriv->link_info.num_rx_in4period[idx] =
 987                             rtlpriv->link_info.num_rx_in4period[idx + 1];
 988                         rtlpriv->link_info.num_tx_in4period[idx] =
 989                             rtlpriv->link_info.num_tx_in4period[idx + 1];
 990                 }
 991                 rtlpriv->link_info.num_rx_in4period[3] =
 992                     rtlpriv->link_info.num_rx_inperiod;
 993                 rtlpriv->link_info.num_tx_in4period[3] =
 994                     rtlpriv->link_info.num_tx_inperiod;
 995                 for (idx = 0; idx <= 3; idx++) {
 996                         rx_cnt_inp4eriod +=
 997                             rtlpriv->link_info.num_rx_in4period[idx];
 998                         tx_cnt_inp4eriod +=
 999                             rtlpriv->link_info.num_tx_in4period[idx];
1000                 }
1001                 aver_rx_cnt_inperiod = rx_cnt_inp4eriod / 4;
1002                 aver_tx_cnt_inperiod = tx_cnt_inp4eriod / 4;
1003
1004                 /* (2) check traffic busy */
1005                 if (aver_rx_cnt_inperiod > 100 || aver_tx_cnt_inperiod > 100)
1006                         busytraffic = true;
1007
1008                 /* Higher Tx/Rx data. */
1009                 if (aver_rx_cnt_inperiod > 4000 ||
1010                     aver_tx_cnt_inperiod > 4000) {
1011                         higher_busytraffic = true;
1012
1013                         /* Extremely high Rx data. */
1014                         if (aver_rx_cnt_inperiod > 5000)
1015                                 higher_busyrxtraffic = true;
1016                 }
1017
1018                 /* check every tid's tx traffic */
1019                 for (tid = 0; tid <= 7; tid++) {
1020                         for (idx = 0; idx <= 2; idx++)
1021                                 rtlpriv->link_info.tidtx_in4period[tid][idx] =
1022                                   rtlpriv->link_info.tidtx_in4period[tid]
1023                                   [idx + 1];
1024                         rtlpriv->link_info.tidtx_in4period[tid][3] =
1025                                 rtlpriv->link_info.tidtx_inperiod[tid];
1026
1027                         for (idx = 0; idx <= 3; idx++)
1028                                 tidtx_inp4eriod[tid] +=
1029                                   rtlpriv->link_info.tidtx_in4period[tid][idx];
1030                         aver_tidtx_inperiod[tid] = tidtx_inp4eriod[tid] / 4;
1031                         if (aver_tidtx_inperiod[tid] > 5000)
1032                                 rtlpriv->link_info.higher_busytxtraffic[tid] =
1033                                                    true;
1034                         else
1035                                 rtlpriv->link_info.higher_busytxtraffic[tid] =
1036                                                    false;
1037                 }
1038
1039                 if (((rtlpriv->link_info.num_rx_inperiod +
1040                       rtlpriv->link_info.num_tx_inperiod) > 8) ||
1041                     (rtlpriv->link_info.num_rx_inperiod > 2))
1042                         enter_ps = false;
1043                 else
1044                         enter_ps = true;
1045
1046                 /* LeisurePS only work in infra mode. */
1047                 if (enter_ps)
1048                         rtl_lps_enter(hw);
1049                 else
1050                         rtl_lps_leave(hw);
1051         }
1052
1053         rtlpriv->link_info.num_rx_inperiod = 0;
1054         rtlpriv->link_info.num_tx_inperiod = 0;
1055         for (tid = 0; tid <= 7; tid++)
1056                 rtlpriv->link_info.tidtx_inperiod[tid] = 0;
1057
1058         rtlpriv->link_info.busytraffic = busytraffic;
1059         rtlpriv->link_info.higher_busytraffic = higher_busytraffic;
1060         rtlpriv->link_info.higher_busyrxtraffic = higher_busyrxtraffic;
1061
1062         /* <3> DM */
1063         rtlpriv->cfg->ops->dm_watchdog(hw);
1064 }
1065
1066 void rtl_watch_dog_timer_callback(unsigned long data)
1067 {
1068         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
1069         struct rtl_priv *rtlpriv = rtl_priv(hw);
1070
1071         queue_delayed_work(rtlpriv->works.rtl_wq,
1072                            &rtlpriv->works.watchdog_wq, 0);
1073
1074         mod_timer(&rtlpriv->works.watchdog_timer,
1075                   jiffies + MSECS(RTL_WATCH_DOG_TIME));
1076 }
1077
1078 /*********************************************************
1079  *
1080  * frame process functions
1081  *
1082  *********************************************************/
1083 u8 *rtl_find_ie(u8 *data, unsigned int len, u8 ie)
1084 {
1085         struct ieee80211_mgmt *mgmt = (void *)data;
1086         u8 *pos, *end;
1087
1088         pos = (u8 *)mgmt->u.beacon.variable;
1089         end = data + len;
1090         while (pos < end) {
1091                 if (pos + 2 + pos[1] > end)
1092                         return NULL;
1093
1094                 if (pos[0] == ie)
1095                         return pos;
1096
1097                 pos += 2 + pos[1];
1098         }
1099         return NULL;
1100 }
1101
1102 /* when we use 2 rx ants we send IEEE80211_SMPS_OFF */
1103 /* when we use 1 rx ant we send IEEE80211_SMPS_STATIC */
1104 static struct sk_buff *rtl_make_smps_action(struct ieee80211_hw *hw,
1105                 enum ieee80211_smps_mode smps, u8 *da, u8 *bssid)
1106 {
1107         struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
1108         struct sk_buff *skb;
1109         struct ieee80211_mgmt *action_frame;
1110
1111         /* 27 = header + category + action + smps mode */
1112         skb = dev_alloc_skb(27 + hw->extra_tx_headroom);
1113         if (!skb)
1114                 return NULL;
1115
1116         skb_reserve(skb, hw->extra_tx_headroom);
1117         action_frame = (void *)skb_put(skb, 27);
1118         memset(action_frame, 0, 27);
1119         memcpy(action_frame->da, da, ETH_ALEN);
1120         memcpy(action_frame->sa, rtlefuse->dev_addr, ETH_ALEN);
1121         memcpy(action_frame->bssid, bssid, ETH_ALEN);
1122         action_frame->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1123                                                   IEEE80211_STYPE_ACTION);
1124         action_frame->u.action.category = WLAN_CATEGORY_HT;
1125         action_frame->u.action.u.ht_smps.action = WLAN_HT_ACTION_SMPS;
1126         switch (smps) {
1127         case IEEE80211_SMPS_AUTOMATIC:/* 0 */
1128         case IEEE80211_SMPS_NUM_MODES:/* 4 */
1129                 WARN_ON(1);
1130         case IEEE80211_SMPS_OFF:/* 1 */ /*MIMO_PS_NOLIMIT*/
1131                 action_frame->u.action.u.ht_smps.smps_control =
1132                                 WLAN_HT_SMPS_CONTROL_DISABLED;/* 0 */
1133                 break;
1134         case IEEE80211_SMPS_STATIC:/* 2 */ /*MIMO_PS_STATIC*/
1135                 action_frame->u.action.u.ht_smps.smps_control =
1136                                 WLAN_HT_SMPS_CONTROL_STATIC;/* 1 */
1137                 break;
1138         case IEEE80211_SMPS_DYNAMIC:/* 3 */ /*MIMO_PS_DYNAMIC*/
1139                 action_frame->u.action.u.ht_smps.smps_control =
1140                                 WLAN_HT_SMPS_CONTROL_DYNAMIC;/* 3 */
1141                 break;
1142         }
1143
1144         return skb;
1145 }
1146
1147 int rtl_send_smps_action(struct ieee80211_hw *hw,
1148                 struct ieee80211_sta *sta, u8 *da, u8 *bssid,
1149                 enum ieee80211_smps_mode smps)
1150 {
1151         struct rtl_priv *rtlpriv = rtl_priv(hw);
1152         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
1153         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
1154         struct sk_buff *skb = rtl_make_smps_action(hw, smps, da, bssid);
1155         struct rtl_tcb_desc tcb_desc;
1156         memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc));
1157
1158         if (rtlpriv->mac80211.act_scanning)
1159                 goto err_free;
1160
1161         if (!sta)
1162                 goto err_free;
1163
1164         if (unlikely(is_hal_stop(rtlhal) || ppsc->rfpwr_state != ERFON))
1165                 goto err_free;
1166
1167         if (!test_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status))
1168                 goto err_free;
1169
1170         /* this is a type = mgmt * stype = action frame */
1171         if (skb) {
1172                 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1173                 struct rtl_sta_info *sta_entry =
1174                         (struct rtl_sta_info *) sta->drv_priv;
1175                 sta_entry->mimo_ps = smps;
1176                 rtlpriv->cfg->ops->update_rate_tbl(hw, sta, 0);
1177
1178                 info->control.rates[0].idx = 0;
1179                 info->control.sta = sta;
1180                 info->band = hw->conf.channel->band;
1181                 rtlpriv->intf_ops->adapter_tx(hw, skb, &tcb_desc);
1182         }
1183 err_free:
1184         return 0;
1185 }
1186
1187 /*********************************************************
1188  *
1189  * IOT functions
1190  *
1191  *********************************************************/
1192 static bool rtl_chk_vendor_ouisub(struct ieee80211_hw *hw,
1193                 struct octet_string vendor_ie)
1194 {
1195         struct rtl_priv *rtlpriv = rtl_priv(hw);
1196         bool matched = false;
1197         static u8 athcap_1[] = { 0x00, 0x03, 0x7F };
1198         static u8 athcap_2[] = { 0x00, 0x13, 0x74 };
1199         static u8 broadcap_1[] = { 0x00, 0x10, 0x18 };
1200         static u8 broadcap_2[] = { 0x00, 0x0a, 0xf7 };
1201         static u8 broadcap_3[] = { 0x00, 0x05, 0xb5 };
1202         static u8 racap[] = { 0x00, 0x0c, 0x43 };
1203         static u8 ciscocap[] = { 0x00, 0x40, 0x96 };
1204         static u8 marvcap[] = { 0x00, 0x50, 0x43 };
1205
1206         if (memcmp(vendor_ie.octet, athcap_1, 3) == 0 ||
1207                 memcmp(vendor_ie.octet, athcap_2, 3) == 0) {
1208                 rtlpriv->mac80211.vendor = PEER_ATH;
1209                 matched = true;
1210         } else if (memcmp(vendor_ie.octet, broadcap_1, 3) == 0 ||
1211                 memcmp(vendor_ie.octet, broadcap_2, 3) == 0 ||
1212                 memcmp(vendor_ie.octet, broadcap_3, 3) == 0) {
1213                 rtlpriv->mac80211.vendor = PEER_BROAD;
1214                 matched = true;
1215         } else if (memcmp(vendor_ie.octet, racap, 3) == 0) {
1216                 rtlpriv->mac80211.vendor = PEER_RAL;
1217                 matched = true;
1218         } else if (memcmp(vendor_ie.octet, ciscocap, 3) == 0) {
1219                 rtlpriv->mac80211.vendor = PEER_CISCO;
1220                 matched = true;
1221         } else if (memcmp(vendor_ie.octet, marvcap, 3) == 0) {
1222                 rtlpriv->mac80211.vendor = PEER_MARV;
1223                 matched = true;
1224         }
1225
1226         return matched;
1227 }
1228
1229 static bool rtl_find_221_ie(struct ieee80211_hw *hw, u8 *data,
1230                 unsigned int len)
1231 {
1232         struct ieee80211_mgmt *mgmt = (void *)data;
1233         struct octet_string vendor_ie;
1234         u8 *pos, *end;
1235
1236         pos = (u8 *)mgmt->u.beacon.variable;
1237         end = data + len;
1238         while (pos < end) {
1239                 if (pos[0] == 221) {
1240                         vendor_ie.length = pos[1];
1241                         vendor_ie.octet = &pos[2];
1242                         if (rtl_chk_vendor_ouisub(hw, vendor_ie))
1243                                 return true;
1244                 }
1245
1246                 if (pos + 2 + pos[1] > end)
1247                         return false;
1248
1249                 pos += 2 + pos[1];
1250         }
1251         return false;
1252 }
1253
1254 void rtl_recognize_peer(struct ieee80211_hw *hw, u8 *data, unsigned int len)
1255 {
1256         struct rtl_priv *rtlpriv = rtl_priv(hw);
1257         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1258         struct ieee80211_hdr *hdr = (void *)data;
1259         u32 vendor = PEER_UNKNOWN;
1260
1261         static u8 ap3_1[3] = { 0x00, 0x14, 0xbf };
1262         static u8 ap3_2[3] = { 0x00, 0x1a, 0x70 };
1263         static u8 ap3_3[3] = { 0x00, 0x1d, 0x7e };
1264         static u8 ap4_1[3] = { 0x00, 0x90, 0xcc };
1265         static u8 ap4_2[3] = { 0x00, 0x0e, 0x2e };
1266         static u8 ap4_3[3] = { 0x00, 0x18, 0x02 };
1267         static u8 ap4_4[3] = { 0x00, 0x17, 0x3f };
1268         static u8 ap4_5[3] = { 0x00, 0x1c, 0xdf };
1269         static u8 ap5_1[3] = { 0x00, 0x1c, 0xf0 };
1270         static u8 ap5_2[3] = { 0x00, 0x21, 0x91 };
1271         static u8 ap5_3[3] = { 0x00, 0x24, 0x01 };
1272         static u8 ap5_4[3] = { 0x00, 0x15, 0xe9 };
1273         static u8 ap5_5[3] = { 0x00, 0x17, 0x9A };
1274         static u8 ap5_6[3] = { 0x00, 0x18, 0xE7 };
1275         static u8 ap6_1[3] = { 0x00, 0x17, 0x94 };
1276         static u8 ap7_1[3] = { 0x00, 0x14, 0xa4 };
1277
1278         if (mac->opmode != NL80211_IFTYPE_STATION)
1279                 return;
1280
1281         if (mac->link_state == MAC80211_NOLINK) {
1282                 mac->vendor = PEER_UNKNOWN;
1283                 return;
1284         }
1285
1286         if (mac->cnt_after_linked > 2)
1287                 return;
1288
1289         /* check if this really is a beacon */
1290         if (!ieee80211_is_beacon(hdr->frame_control))
1291                 return;
1292
1293         /* min. beacon length + FCS_LEN */
1294         if (len <= 40 + FCS_LEN)
1295                 return;
1296
1297         /* and only beacons from the associated BSSID, please */
1298         if (compare_ether_addr(hdr->addr3, rtlpriv->mac80211.bssid))
1299                 return;
1300
1301         if (rtl_find_221_ie(hw, data, len))
1302                 vendor = mac->vendor;
1303
1304         if ((memcmp(mac->bssid, ap5_1, 3) == 0) ||
1305                 (memcmp(mac->bssid, ap5_2, 3) == 0) ||
1306                 (memcmp(mac->bssid, ap5_3, 3) == 0) ||
1307                 (memcmp(mac->bssid, ap5_4, 3) == 0) ||
1308                 (memcmp(mac->bssid, ap5_5, 3) == 0) ||
1309                 (memcmp(mac->bssid, ap5_6, 3) == 0) ||
1310                 vendor == PEER_ATH) {
1311                 vendor = PEER_ATH;
1312                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, ("=>ath find\n"));
1313         } else if ((memcmp(mac->bssid, ap4_4, 3) == 0) ||
1314                 (memcmp(mac->bssid, ap4_5, 3) == 0) ||
1315                 (memcmp(mac->bssid, ap4_1, 3) == 0) ||
1316                 (memcmp(mac->bssid, ap4_2, 3) == 0) ||
1317                 (memcmp(mac->bssid, ap4_3, 3) == 0) ||
1318                 vendor == PEER_RAL) {
1319                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, ("=>ral findn\n"));
1320                 vendor = PEER_RAL;
1321         } else if (memcmp(mac->bssid, ap6_1, 3) == 0 ||
1322                 vendor == PEER_CISCO) {
1323                 vendor = PEER_CISCO;
1324                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, ("=>cisco find\n"));
1325         } else if ((memcmp(mac->bssid, ap3_1, 3) == 0) ||
1326                 (memcmp(mac->bssid, ap3_2, 3) == 0) ||
1327                 (memcmp(mac->bssid, ap3_3, 3) == 0) ||
1328                 vendor == PEER_BROAD) {
1329                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, ("=>broad find\n"));
1330                 vendor = PEER_BROAD;
1331         } else if (memcmp(mac->bssid, ap7_1, 3) == 0 ||
1332                 vendor == PEER_MARV) {
1333                 vendor = PEER_MARV;
1334                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, ("=>marv find\n"));
1335         }
1336
1337         mac->vendor = vendor;
1338 }
1339
1340 /*********************************************************
1341  *
1342  * sysfs functions
1343  *
1344  *********************************************************/
1345 static ssize_t rtl_show_debug_level(struct device *d,
1346                                     struct device_attribute *attr, char *buf)
1347 {
1348         struct ieee80211_hw *hw = dev_get_drvdata(d);
1349         struct rtl_priv *rtlpriv = rtl_priv(hw);
1350
1351         return sprintf(buf, "0x%08X\n", rtlpriv->dbg.global_debuglevel);
1352 }
1353
1354 static ssize_t rtl_store_debug_level(struct device *d,
1355                                      struct device_attribute *attr,
1356                                      const char *buf, size_t count)
1357 {
1358         struct ieee80211_hw *hw = dev_get_drvdata(d);
1359         struct rtl_priv *rtlpriv = rtl_priv(hw);
1360         unsigned long val;
1361         int ret;
1362
1363         ret = strict_strtoul(buf, 0, &val);
1364         if (ret) {
1365                 printk(KERN_DEBUG "%s is not in hex or decimal form.\n", buf);
1366         } else {
1367                 rtlpriv->dbg.global_debuglevel = val;
1368                 printk(KERN_DEBUG "debuglevel:%x\n",
1369                        rtlpriv->dbg.global_debuglevel);
1370         }
1371
1372         return strnlen(buf, count);
1373 }
1374
1375 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
1376                    rtl_show_debug_level, rtl_store_debug_level);
1377
1378 static struct attribute *rtl_sysfs_entries[] = {
1379
1380         &dev_attr_debug_level.attr,
1381
1382         NULL
1383 };
1384
1385 /*
1386  * "name" is folder name witch will be
1387  * put in device directory like :
1388  * sys/devices/pci0000:00/0000:00:1c.4/
1389  * 0000:06:00.0/rtl_sysfs
1390  */
1391 struct attribute_group rtl_attribute_group = {
1392         .name = "rtlsysfs",
1393         .attrs = rtl_sysfs_entries,
1394 };
1395
1396 MODULE_AUTHOR("lizhaoming       <chaoming_li@realsil.com.cn>");
1397 MODULE_AUTHOR("Realtek WlanFAE  <wlanfae@realtek.com>");
1398 MODULE_AUTHOR("Larry Finger     <Larry.FInger@lwfinger.net>");
1399 MODULE_LICENSE("GPL");
1400 MODULE_DESCRIPTION("Realtek 802.11n PCI wireless core");
1401
1402 static int __init rtl_core_module_init(void)
1403 {
1404         if (rtl_rate_control_register())
1405                 printk(KERN_ERR "rtlwifi: Unable to register rtl_rc,"
1406                        "use default RC !!\n");
1407
1408         return 0;
1409 }
1410
1411 static void __exit rtl_core_module_exit(void)
1412 {
1413         /*RC*/
1414         rtl_rate_control_unregister();
1415 }
1416
1417 module_init(rtl_core_module_init);
1418 module_exit(rtl_core_module_exit);