drivers/net/wireless/rtlwifi/base.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2009-2012  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 "wifi.h"
  31 #include "rc.h"
  32 #include "base.h"
  33 #include "efuse.h"
  34 #include "cam.h"
  35 #include "ps.h"
  36 #include "regd.h"
  37
  38 #include <linux/ip.h>
  39 #include <linux/module.h>
  40
  41 /*
  42  *NOTICE!!!: This file will be very big, we hsould
  43  *keep it clear under follwing roles:
  44  *
  45  *This file include follwing part, so, if you add new
  46  *functions into this file, please check which part it
  47  *should includes. or check if you should add new part
  48  *for this file:
  49  *
  50  *1) mac80211 init functions
  51  *2) tx information functions
  52  *3) functions called by core.c
  53  *4) wq & timer callback functions
  54  *5) frame process functions
  55  *6) IOT functions
  56  *7) sysfs functions
  57  *8) ...
  58  */
  59
  60 /*********************************************************
  61  *
  62  * mac80211 init functions
  63  *
  64  *********************************************************/
  65 static struct ieee80211_channel rtl_channeltable_2g[] = {
  66         {.center_freq = 2412, .hw_value = 1,},
  67         {.center_freq = 2417, .hw_value = 2,},
  68         {.center_freq = 2422, .hw_value = 3,},
  69         {.center_freq = 2427, .hw_value = 4,},
  70         {.center_freq = 2432, .hw_value = 5,},
  71         {.center_freq = 2437, .hw_value = 6,},
  72         {.center_freq = 2442, .hw_value = 7,},
  73         {.center_freq = 2447, .hw_value = 8,},
  74         {.center_freq = 2452, .hw_value = 9,},
  75         {.center_freq = 2457, .hw_value = 10,},
  76         {.center_freq = 2462, .hw_value = 11,},
  77         {.center_freq = 2467, .hw_value = 12,},
  78         {.center_freq = 2472, .hw_value = 13,},
  79         {.center_freq = 2484, .hw_value = 14,},
  80 };
  81
  82 static struct ieee80211_channel rtl_channeltable_5g[] = {
  83         {.center_freq = 5180, .hw_value = 36,},
  84         {.center_freq = 5200, .hw_value = 40,},
  85         {.center_freq = 5220, .hw_value = 44,},
  86         {.center_freq = 5240, .hw_value = 48,},
  87         {.center_freq = 5260, .hw_value = 52,},
  88         {.center_freq = 5280, .hw_value = 56,},
  89         {.center_freq = 5300, .hw_value = 60,},
  90         {.center_freq = 5320, .hw_value = 64,},
  91         {.center_freq = 5500, .hw_value = 100,},
  92         {.center_freq = 5520, .hw_value = 104,},
  93         {.center_freq = 5540, .hw_value = 108,},
  94         {.center_freq = 5560, .hw_value = 112,},
  95         {.center_freq = 5580, .hw_value = 116,},
  96         {.center_freq = 5600, .hw_value = 120,},
  97         {.center_freq = 5620, .hw_value = 124,},
  98         {.center_freq = 5640, .hw_value = 128,},
  99         {.center_freq = 5660, .hw_value = 132,},
 100         {.center_freq = 5680, .hw_value = 136,},
 101         {.center_freq = 5700, .hw_value = 140,},
 102         {.center_freq = 5745, .hw_value = 149,},
 103         {.center_freq = 5765, .hw_value = 153,},
 104         {.center_freq = 5785, .hw_value = 157,},
 105         {.center_freq = 5805, .hw_value = 161,},
 106         {.center_freq = 5825, .hw_value = 165,},
 107 };
 108
 109 static struct ieee80211_rate rtl_ratetable_2g[] = {
 110         {.bitrate = 10, .hw_value = 0x00,},
 111         {.bitrate = 20, .hw_value = 0x01,},
 112         {.bitrate = 55, .hw_value = 0x02,},
 113         {.bitrate = 110, .hw_value = 0x03,},
 114         {.bitrate = 60, .hw_value = 0x04,},
 115         {.bitrate = 90, .hw_value = 0x05,},
 116         {.bitrate = 120, .hw_value = 0x06,},
 117         {.bitrate = 180, .hw_value = 0x07,},
 118         {.bitrate = 240, .hw_value = 0x08,},
 119         {.bitrate = 360, .hw_value = 0x09,},
 120         {.bitrate = 480, .hw_value = 0x0a,},
 121         {.bitrate = 540, .hw_value = 0x0b,},
 122 };
 123
 124 static struct ieee80211_rate rtl_ratetable_5g[] = {
 125         {.bitrate = 60, .hw_value = 0x04,},
 126         {.bitrate = 90, .hw_value = 0x05,},
 127         {.bitrate = 120, .hw_value = 0x06,},
 128         {.bitrate = 180, .hw_value = 0x07,},
 129         {.bitrate = 240, .hw_value = 0x08,},
 130         {.bitrate = 360, .hw_value = 0x09,},
 131         {.bitrate = 480, .hw_value = 0x0a,},
 132         {.bitrate = 540, .hw_value = 0x0b,},
 133 };
 134
 135 static const struct ieee80211_supported_band rtl_band_2ghz = {
 136         .band = IEEE80211_BAND_2GHZ,
 137
 138         .channels = rtl_channeltable_2g,
 139         .n_channels = ARRAY_SIZE(rtl_channeltable_2g),
 140
 141         .bitrates = rtl_ratetable_2g,
 142         .n_bitrates = ARRAY_SIZE(rtl_ratetable_2g),
 143
 144         .ht_cap = {0},
 145 };
 146
 147 static struct ieee80211_supported_band rtl_band_5ghz = {
 148         .band = IEEE80211_BAND_5GHZ,
 149
 150         .channels = rtl_channeltable_5g,
 151         .n_channels = ARRAY_SIZE(rtl_channeltable_5g),
 152
 153         .bitrates = rtl_ratetable_5g,
 154         .n_bitrates = ARRAY_SIZE(rtl_ratetable_5g),
 155
 156         .ht_cap = {0},
 157 };
 158
 159 static const u8 tid_to_ac[] = {
 160         2, /* IEEE80211_AC_BE */
 161         3, /* IEEE80211_AC_BK */
 162         3, /* IEEE80211_AC_BK */
 163         2, /* IEEE80211_AC_BE */
 164         1, /* IEEE80211_AC_VI */
 165         1, /* IEEE80211_AC_VI */
 166         0, /* IEEE80211_AC_VO */
 167         0, /* IEEE80211_AC_VO */
 168 };
 169
 170 u8 rtl_tid_to_ac(struct ieee80211_hw *hw, u8 tid)
 171 {
 172         return tid_to_ac[tid];
 173 }
 174
 175 static void _rtl_init_hw_ht_capab(struct ieee80211_hw *hw,
 176                                   struct ieee80211_sta_ht_cap *ht_cap)
 177 {
 178         struct rtl_priv *rtlpriv = rtl_priv(hw);
 179         struct rtl_phy *rtlphy = &(rtlpriv->phy);
 180
 181         ht_cap->ht_supported = true;
 182         ht_cap->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
 183             IEEE80211_HT_CAP_SGI_40 |
 184             IEEE80211_HT_CAP_SGI_20 |
 185             IEEE80211_HT_CAP_DSSSCCK40 | IEEE80211_HT_CAP_MAX_AMSDU;
 186
 187         if (rtlpriv->rtlhal.disable_amsdu_8k)
 188                 ht_cap->cap &= ~IEEE80211_HT_CAP_MAX_AMSDU;
 189
 190         /*
 191          *Maximum length of AMPDU that the STA can receive.
 192          *Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
 193          */
 194         ht_cap->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
 195
 196         /*Minimum MPDU start spacing , */
 197         ht_cap->ampdu_density = IEEE80211_HT_MPDU_DENSITY_16;
 198
 199         ht_cap->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
 200
 201         /*
 202          *hw->wiphy->bands[IEEE80211_BAND_2GHZ]
 203          *base on ant_num
 204          *rx_mask: RX mask
 205          *if rx_ant =1 rx_mask[0]=0xff;==>MCS0-MCS7
 206          *if rx_ant =2 rx_mask[1]=0xff;==>MCS8-MCS15
 207          *if rx_ant >=3 rx_mask[2]=0xff;
 208          *if BW_40 rx_mask[4]=0x01;
 209          *highest supported RX rate
 210          */
 211         if (get_rf_type(rtlphy) == RF_1T2R || get_rf_type(rtlphy) == RF_2T2R) {
 212
 213                 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, "1T2R or 2T2R\n");
 214
 215                 ht_cap->mcs.rx_mask[0] = 0xFF;
 216                 ht_cap->mcs.rx_mask[1] = 0xFF;
 217                 ht_cap->mcs.rx_mask[4] = 0x01;
 218
 219                 ht_cap->mcs.rx_highest = cpu_to_le16(MAX_BIT_RATE_40MHZ_MCS15);
 220         } else if (get_rf_type(rtlphy) == RF_1T1R) {
 221
 222                 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, "1T1R\n");
 223
 224                 ht_cap->mcs.rx_mask[0] = 0xFF;
 225                 ht_cap->mcs.rx_mask[1] = 0x00;
 226                 ht_cap->mcs.rx_mask[4] = 0x01;
 227
 228                 ht_cap->mcs.rx_highest = cpu_to_le16(MAX_BIT_RATE_40MHZ_MCS7);
 229         }
 230 }
 231
 232 static void _rtl_init_mac80211(struct ieee80211_hw *hw)
 233 {
 234         struct rtl_priv *rtlpriv = rtl_priv(hw);
 235         struct rtl_hal *rtlhal = rtl_hal(rtlpriv);
 236         struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
 237         struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
 238         struct ieee80211_supported_band *sband;
 239
 240
 241         if (rtlhal->macphymode == SINGLEMAC_SINGLEPHY && rtlhal->bandset ==
 242             BAND_ON_BOTH) {
 243                 /* 1: 2.4 G bands */
 244                 /* <1> use  mac->bands as mem for hw->wiphy->bands */
 245                 sband = &(rtlmac->bands[IEEE80211_BAND_2GHZ]);
 246
 247                 /* <2> set hw->wiphy->bands[IEEE80211_BAND_2GHZ]
 248                  * to default value(1T1R) */
 249                 memcpy(&(rtlmac->bands[IEEE80211_BAND_2GHZ]), &rtl_band_2ghz,
 250                                 sizeof(struct ieee80211_supported_band));
 251
 252                 /* <3> init ht cap base on ant_num */
 253                 _rtl_init_hw_ht_capab(hw, &sband->ht_cap);
 254
 255                 /* <4> set mac->sband to wiphy->sband */
 256                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = sband;
 257
 258                 /* 2: 5 G bands */
 259                 /* <1> use  mac->bands as mem for hw->wiphy->bands */
 260                 sband = &(rtlmac->bands[IEEE80211_BAND_5GHZ]);
 261
 262                 /* <2> set hw->wiphy->bands[IEEE80211_BAND_5GHZ]
 263                  * to default value(1T1R) */
 264                 memcpy(&(rtlmac->bands[IEEE80211_BAND_5GHZ]), &rtl_band_5ghz,
 265                                 sizeof(struct ieee80211_supported_band));
 266
 267                 /* <3> init ht cap base on ant_num */
 268                 _rtl_init_hw_ht_capab(hw, &sband->ht_cap);
 269
 270                 /* <4> set mac->sband to wiphy->sband */
 271                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = sband;
 272         } else {
 273                 if (rtlhal->current_bandtype == BAND_ON_2_4G) {
 274                         /* <1> use  mac->bands as mem for hw->wiphy->bands */
 275                         sband = &(rtlmac->bands[IEEE80211_BAND_2GHZ]);
 276
 277                         /* <2> set hw->wiphy->bands[IEEE80211_BAND_2GHZ]
 278                          * to default value(1T1R) */
 279                         memcpy(&(rtlmac->bands[IEEE80211_BAND_2GHZ]),
 280                                  &rtl_band_2ghz,
 281                                  sizeof(struct ieee80211_supported_band));
 282
 283                         /* <3> init ht cap base on ant_num */
 284                         _rtl_init_hw_ht_capab(hw, &sband->ht_cap);
 285
 286                         /* <4> set mac->sband to wiphy->sband */
 287                         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = sband;
 288                 } else if (rtlhal->current_bandtype == BAND_ON_5G) {
 289                         /* <1> use  mac->bands as mem for hw->wiphy->bands */
 290                         sband = &(rtlmac->bands[IEEE80211_BAND_5GHZ]);
 291
 292                         /* <2> set hw->wiphy->bands[IEEE80211_BAND_5GHZ]
 293                          * to default value(1T1R) */
 294                         memcpy(&(rtlmac->bands[IEEE80211_BAND_5GHZ]),
 295                                  &rtl_band_5ghz,
 296                                  sizeof(struct ieee80211_supported_band));
 297
 298                         /* <3> init ht cap base on ant_num */
 299                         _rtl_init_hw_ht_capab(hw, &sband->ht_cap);
 300
 301                         /* <4> set mac->sband to wiphy->sband */
 302                         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = sband;
 303                 } else {
 304                         RT_TRACE(rtlpriv, COMP_INIT, DBG_EMERG, "Err BAND %d\n",
 305                                  rtlhal->current_bandtype);
 306                 }
 307         }
 308         /* <5> set hw caps */
 309         hw->flags = IEEE80211_HW_SIGNAL_DBM |
 310             IEEE80211_HW_RX_INCLUDES_FCS |
 311             IEEE80211_HW_AMPDU_AGGREGATION |
 312             IEEE80211_HW_CONNECTION_MONITOR |
 313             /* IEEE80211_HW_SUPPORTS_CQM_RSSI | */
 314             IEEE80211_HW_REPORTS_TX_ACK_STATUS | 0;
 315
 316         /* swlps or hwlps has been set in diff chip in init_sw_vars */
 317         if (rtlpriv->psc.swctrl_lps)
 318                 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
 319                         IEEE80211_HW_PS_NULLFUNC_STACK |
 320                         /* IEEE80211_HW_SUPPORTS_DYNAMIC_PS | */
 321                         0;
 322
 323         hw->wiphy->interface_modes =
 324             BIT(NL80211_IFTYPE_AP) |
 325             BIT(NL80211_IFTYPE_STATION) |
 326             BIT(NL80211_IFTYPE_ADHOC);
 327
 328         hw->wiphy->rts_threshold = 2347;
 329
 330         hw->queues = AC_MAX;
 331         hw->extra_tx_headroom = RTL_TX_HEADER_SIZE;
 332
 333         /* TODO: Correct this value for our hw */
 334         /* TODO: define these hard code value */
 335         hw->channel_change_time = 100;
 336         hw->max_listen_interval = 10;
 337         hw->max_rate_tries = 4;
 338         /* hw->max_rates = 1; */
 339         hw->sta_data_size = sizeof(struct rtl_sta_info);
 340
 341         /* <6> mac address */
 342         if (is_valid_ether_addr(rtlefuse->dev_addr)) {
 343                 SET_IEEE80211_PERM_ADDR(hw, rtlefuse->dev_addr);
 344         } else {
 345                 u8 rtlmac1[] = { 0x00, 0xe0, 0x4c, 0x81, 0x92, 0x00 };
 346                 get_random_bytes((rtlmac1 + (ETH_ALEN - 1)), 1);
 347                 SET_IEEE80211_PERM_ADDR(hw, rtlmac1);
 348         }
 349
 350 }
 351
 352 static void _rtl_init_deferred_work(struct ieee80211_hw *hw)
 353 {
 354         struct rtl_priv *rtlpriv = rtl_priv(hw);
 355
 356         /* <1> timer */
 357         init_timer(&rtlpriv->works.watchdog_timer);
 358         setup_timer(&rtlpriv->works.watchdog_timer,
 359                     rtl_watch_dog_timer_callback, (unsigned long)hw);
 360
 361         /* <2> work queue */
 362         rtlpriv->works.hw = hw;
 363         rtlpriv->works.rtl_wq = alloc_workqueue(rtlpriv->cfg->name, 0, 0);
 364         INIT_DELAYED_WORK(&rtlpriv->works.watchdog_wq,
 365                           (void *)rtl_watchdog_wq_callback);
 366         INIT_DELAYED_WORK(&rtlpriv->works.ips_nic_off_wq,
 367                           (void *)rtl_ips_nic_off_wq_callback);
 368         INIT_DELAYED_WORK(&rtlpriv->works.ps_work,
 369                           (void *)rtl_swlps_wq_callback);
 370         INIT_DELAYED_WORK(&rtlpriv->works.ps_rfon_wq,
 371                           (void *)rtl_swlps_rfon_wq_callback);
 372
 373 }
 374
 375 void rtl_deinit_deferred_work(struct ieee80211_hw *hw)
 376 {
 377         struct rtl_priv *rtlpriv = rtl_priv(hw);
 378
 379         del_timer_sync(&rtlpriv->works.watchdog_timer);
 380
 381         cancel_delayed_work(&rtlpriv->works.watchdog_wq);
 382         cancel_delayed_work(&rtlpriv->works.ips_nic_off_wq);
 383         cancel_delayed_work(&rtlpriv->works.ps_work);
 384         cancel_delayed_work(&rtlpriv->works.ps_rfon_wq);
 385 }
 386
 387 void rtl_init_rfkill(struct ieee80211_hw *hw)
 388 {
 389         struct rtl_priv *rtlpriv = rtl_priv(hw);
 390
 391         bool radio_state;
 392         bool blocked;
 393         u8 valid = 0;
 394
 395         /*set init state to on */
 396         rtlpriv->rfkill.rfkill_state = true;
 397         wiphy_rfkill_set_hw_state(hw->wiphy, 0);
 398
 399         radio_state = rtlpriv->cfg->ops->radio_onoff_checking(hw, &valid);
 400
 401         if (valid) {
 402                 pr_info("wireless switch is %s\n",
 403                         rtlpriv->rfkill.rfkill_state ? "on" : "off");
 404
 405                 rtlpriv->rfkill.rfkill_state = radio_state;
 406
 407                 blocked = (rtlpriv->rfkill.rfkill_state == 1) ? 0 : 1;
 408                 wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
 409         }
 410
 411         wiphy_rfkill_start_polling(hw->wiphy);
 412 }
 413
 414 void rtl_deinit_rfkill(struct ieee80211_hw *hw)
 415 {
 416         wiphy_rfkill_stop_polling(hw->wiphy);
 417 }
 418
 419 int rtl_init_core(struct ieee80211_hw *hw)
 420 {
 421         struct rtl_priv *rtlpriv = rtl_priv(hw);
 422         struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
 423
 424         /* <1> init mac80211 */
 425         _rtl_init_mac80211(hw);
 426         rtlmac->hw = hw;
 427
 428         /* <2> rate control register */
 429         hw->rate_control_algorithm = "rtl_rc";
 430
 431         /*
 432          * <3> init CRDA must come after init
 433          * mac80211 hw  in _rtl_init_mac80211.
 434          */
 435         if (rtl_regd_init(hw, rtl_reg_notifier)) {
 436                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "REGD init failed\n");
 437                 return 1;
 438         } else {
 439                 /* CRDA regd hint must after init CRDA */
 440                 if (regulatory_hint(hw->wiphy, rtlpriv->regd.alpha2)) {
 441                         RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
 442                                  "regulatory_hint fail\n");
 443                 }
 444         }
 445
 446         /* <4> locks */
 447         mutex_init(&rtlpriv->locks.conf_mutex);
 448         mutex_init(&rtlpriv->locks.ps_mutex);
 449         spin_lock_init(&rtlpriv->locks.ips_lock);
 450         spin_lock_init(&rtlpriv->locks.irq_th_lock);
 451         spin_lock_init(&rtlpriv->locks.h2c_lock);
 452         spin_lock_init(&rtlpriv->locks.rf_ps_lock);
 453         spin_lock_init(&rtlpriv->locks.rf_lock);
 454         spin_lock_init(&rtlpriv->locks.waitq_lock);
 455         spin_lock_init(&rtlpriv->locks.cck_and_rw_pagea_lock);
 456
 457         rtlmac->link_state = MAC80211_NOLINK;
 458
 459         /* <5> init deferred work */
 460         _rtl_init_deferred_work(hw);
 461
 462         return 0;
 463 }
 464
 465 void rtl_deinit_core(struct ieee80211_hw *hw)
 466 {
 467 }
 468
 469 void rtl_init_rx_config(struct ieee80211_hw *hw)
 470 {
 471         struct rtl_priv *rtlpriv = rtl_priv(hw);
 472         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 473
 474         rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_RCR, (u8 *) (&mac->rx_conf));
 475 }
 476
 477 /*********************************************************
 478  *
 479  * tx information functions
 480  *
 481  *********************************************************/
 482 static void _rtl_qurey_shortpreamble_mode(struct ieee80211_hw *hw,
 483                                           struct rtl_tcb_desc *tcb_desc,
 484                                           struct ieee80211_tx_info *info)
 485 {
 486         struct rtl_priv *rtlpriv = rtl_priv(hw);
 487         u8 rate_flag = info->control.rates[0].flags;
 488
 489         tcb_desc->use_shortpreamble = false;
 490
 491         /* 1M can only use Long Preamble. 11B spec */
 492         if (tcb_desc->hw_rate == rtlpriv->cfg->maps[RTL_RC_CCK_RATE1M])
 493                 return;
 494         else if (rate_flag & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
 495                 tcb_desc->use_shortpreamble = true;
 496
 497         return;
 498 }
 499
 500 static void _rtl_query_shortgi(struct ieee80211_hw *hw,
 501                                struct ieee80211_sta *sta,
 502                                struct rtl_tcb_desc *tcb_desc,
 503                                struct ieee80211_tx_info *info)
 504 {
 505         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 506         u8 rate_flag = info->control.rates[0].flags;
 507         u8 sgi_40 = 0, sgi_20 = 0, bw_40 = 0;
 508         tcb_desc->use_shortgi = false;
 509
 510         if (sta == NULL)
 511                 return;
 512
 513         sgi_40 = sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40;
 514         sgi_20 = sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_20;
 515
 516         if (!(sta->ht_cap.ht_supported))
 517                 return;
 518
 519         if (!sgi_40 && !sgi_20)
 520                 return;
 521
 522         if (mac->opmode == NL80211_IFTYPE_STATION)
 523                 bw_40 = mac->bw_40;
 524         else if (mac->opmode == NL80211_IFTYPE_AP ||
 525                 mac->opmode == NL80211_IFTYPE_ADHOC)
 526                 bw_40 = sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40;
 527
 528         if (bw_40 && sgi_40)
 529                 tcb_desc->use_shortgi = true;
 530         else if ((bw_40 == false) && sgi_20)
 531                 tcb_desc->use_shortgi = true;
 532
 533         if (!(rate_flag & IEEE80211_TX_RC_SHORT_GI))
 534                 tcb_desc->use_shortgi = false;
 535 }
 536
 537 static void _rtl_query_protection_mode(struct ieee80211_hw *hw,
 538                                        struct rtl_tcb_desc *tcb_desc,
 539                                        struct ieee80211_tx_info *info)
 540 {
 541         struct rtl_priv *rtlpriv = rtl_priv(hw);
 542         u8 rate_flag = info->control.rates[0].flags;
 543
 544         /* Common Settings */
 545         tcb_desc->rts_stbc = false;
 546         tcb_desc->cts_enable = false;
 547         tcb_desc->rts_sc = 0;
 548         tcb_desc->rts_bw = false;
 549         tcb_desc->rts_use_shortpreamble = false;
 550         tcb_desc->rts_use_shortgi = false;
 551
 552         if (rate_flag & IEEE80211_TX_RC_USE_CTS_PROTECT) {
 553                 /* Use CTS-to-SELF in protection mode. */
 554                 tcb_desc->rts_enable = true;
 555                 tcb_desc->cts_enable = true;
 556                 tcb_desc->rts_rate = rtlpriv->cfg->maps[RTL_RC_OFDM_RATE24M];
 557         } else if (rate_flag & IEEE80211_TX_RC_USE_RTS_CTS) {
 558                 /* Use RTS-CTS in protection mode. */
 559                 tcb_desc->rts_enable = true;
 560                 tcb_desc->rts_rate = rtlpriv->cfg->maps[RTL_RC_OFDM_RATE24M];
 561         }
 562 }
 563
 564 static void _rtl_txrate_selectmode(struct ieee80211_hw *hw,
 565                                    struct ieee80211_sta *sta,
 566                                    struct rtl_tcb_desc *tcb_desc)
 567 {
 568         struct rtl_priv *rtlpriv = rtl_priv(hw);
 569         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 570         struct rtl_sta_info *sta_entry = NULL;
 571         u8 ratr_index = 7;
 572
 573         if (sta) {
 574                 sta_entry = (struct rtl_sta_info *) sta->drv_priv;
 575                 ratr_index = sta_entry->ratr_index;
 576         }
 577         if (!tcb_desc->disable_ratefallback || !tcb_desc->use_driver_rate) {
 578                 if (mac->opmode == NL80211_IFTYPE_STATION) {
 579                         tcb_desc->ratr_index = 0;
 580                 } else if (mac->opmode == NL80211_IFTYPE_ADHOC) {
 581                         if (tcb_desc->multicast || tcb_desc->broadcast) {
 582                                 tcb_desc->hw_rate =
 583                                     rtlpriv->cfg->maps[RTL_RC_CCK_RATE2M];
 584                                 tcb_desc->use_driver_rate = 1;
 585                         } else {
 586                                 /* TODO */
 587                         }
 588                         tcb_desc->ratr_index = ratr_index;
 589                 } else if (mac->opmode == NL80211_IFTYPE_AP) {
 590                         tcb_desc->ratr_index = ratr_index;
 591                 }
 592         }
 593
 594         if (rtlpriv->dm.useramask) {
 595                 /* TODO we will differentiate adhoc and station futrue  */
 596                 if (mac->opmode == NL80211_IFTYPE_STATION) {
 597                         tcb_desc->mac_id = 0;
 598
 599                         if (mac->mode == WIRELESS_MODE_N_24G)
 600                                 tcb_desc->ratr_index = RATR_INX_WIRELESS_NGB;
 601                         else if (mac->mode == WIRELESS_MODE_N_5G)
 602                                 tcb_desc->ratr_index = RATR_INX_WIRELESS_NG;
 603                         else if (mac->mode & WIRELESS_MODE_G)
 604                                 tcb_desc->ratr_index = RATR_INX_WIRELESS_GB;
 605                         else if (mac->mode & WIRELESS_MODE_B)
 606                                 tcb_desc->ratr_index = RATR_INX_WIRELESS_B;
 607                         else if (mac->mode & WIRELESS_MODE_A)
 608                                 tcb_desc->ratr_index = RATR_INX_WIRELESS_G;
 609                 } else if (mac->opmode == NL80211_IFTYPE_AP ||
 610                         mac->opmode == NL80211_IFTYPE_ADHOC) {
 611                         if (NULL != sta) {
 612                                 if (sta->aid > 0)
 613                                         tcb_desc->mac_id = sta->aid + 1;
 614                                 else
 615                                         tcb_desc->mac_id = 1;
 616                         } else {
 617                                 tcb_desc->mac_id = 0;
 618                         }
 619                 }
 620         }
 621
 622 }
 623
 624 static void _rtl_query_bandwidth_mode(struct ieee80211_hw *hw,
 625                                       struct ieee80211_sta *sta,
 626                                       struct rtl_tcb_desc *tcb_desc)
 627 {
 628         struct rtl_priv *rtlpriv = rtl_priv(hw);
 629         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 630
 631         tcb_desc->packet_bw = false;
 632         if (!sta)
 633                 return;
 634         if (mac->opmode == NL80211_IFTYPE_AP ||
 635             mac->opmode == NL80211_IFTYPE_ADHOC) {
 636                 if (!(sta->ht_cap.ht_supported) ||
 637                     !(sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40))
 638                         return;
 639         } else if (mac->opmode == NL80211_IFTYPE_STATION) {
 640                 if (!mac->bw_40 || !(sta->ht_cap.ht_supported))
 641                         return;
 642         }
 643         if (tcb_desc->multicast || tcb_desc->broadcast)
 644                 return;
 645
 646         /*use legency rate, shall use 20MHz */
 647         if (tcb_desc->hw_rate <= rtlpriv->cfg->maps[RTL_RC_OFDM_RATE54M])
 648                 return;
 649
 650         tcb_desc->packet_bw = true;
 651 }
 652
 653 static u8 _rtl_get_highest_n_rate(struct ieee80211_hw *hw)
 654 {
 655         struct rtl_priv *rtlpriv = rtl_priv(hw);
 656         struct rtl_phy *rtlphy = &(rtlpriv->phy);
 657         u8 hw_rate;
 658
 659         if (get_rf_type(rtlphy) == RF_2T2R)
 660                 hw_rate = rtlpriv->cfg->maps[RTL_RC_HT_RATEMCS15];
 661         else
 662                 hw_rate = rtlpriv->cfg->maps[RTL_RC_HT_RATEMCS7];
 663
 664         return hw_rate;
 665 }
 666
 667 /* mac80211's rate_idx is like this:
 668  *
 669  * 2.4G band:rx_status->band == IEEE80211_BAND_2GHZ
 670  *
 671  * B/G rate:
 672  * (rx_status->flag & RX_FLAG_HT) = 0,
 673  * DESC92_RATE1M-->DESC92_RATE54M ==> idx is 0-->11,
 674  *
 675  * N rate:
 676  * (rx_status->flag & RX_FLAG_HT) = 1,
 677  * DESC92_RATEMCS0-->DESC92_RATEMCS15 ==> idx is 0-->15
 678  *
 679  * 5G band:rx_status->band == IEEE80211_BAND_5GHZ
 680  * A rate:
 681  * (rx_status->flag & RX_FLAG_HT) = 0,
 682  * DESC92_RATE6M-->DESC92_RATE54M ==> idx is 0-->7,
 683  *
 684  * N rate:
 685  * (rx_status->flag & RX_FLAG_HT) = 1,
 686  * DESC92_RATEMCS0-->DESC92_RATEMCS15 ==> idx is 0-->15
 687  */
 688 int rtlwifi_rate_mapping(struct ieee80211_hw *hw,
 689                          bool isht, u8 desc_rate, bool first_ampdu)
 690 {
 691         int rate_idx;
 692
 693         if (false == isht) {
 694                 if (IEEE80211_BAND_2GHZ == hw->conf.channel->band) {
 695                         switch (desc_rate) {
 696                         case DESC92_RATE1M:
 697                                 rate_idx = 0;
 698                                 break;
 699                         case DESC92_RATE2M:
 700                                 rate_idx = 1;
 701                                 break;
 702                         case DESC92_RATE5_5M:
 703                                 rate_idx = 2;
 704                                 break;
 705                         case DESC92_RATE11M:
 706                                 rate_idx = 3;
 707                                 break;
 708                         case DESC92_RATE6M:
 709                                 rate_idx = 4;
 710                                 break;
 711                         case DESC92_RATE9M:
 712                                 rate_idx = 5;
 713                                 break;
 714                         case DESC92_RATE12M:
 715                                 rate_idx = 6;
 716                                 break;
 717                         case DESC92_RATE18M:
 718                                 rate_idx = 7;
 719                                 break;
 720                         case DESC92_RATE24M:
 721                                 rate_idx = 8;
 722                                 break;
 723                         case DESC92_RATE36M:
 724                                 rate_idx = 9;
 725                                 break;
 726                         case DESC92_RATE48M:
 727                                 rate_idx = 10;
 728                                 break;
 729                         case DESC92_RATE54M:
 730                                 rate_idx = 11;
 731                                 break;
 732                         default:
 733                                 rate_idx = 0;
 734                                 break;
 735                         }
 736                 } else {
 737                         switch (desc_rate) {
 738                         case DESC92_RATE6M:
 739                                 rate_idx = 0;
 740                                 break;
 741                         case DESC92_RATE9M:
 742                                 rate_idx = 1;
 743                                 break;
 744                         case DESC92_RATE12M:
 745                                 rate_idx = 2;
 746                                 break;
 747                         case DESC92_RATE18M:
 748                                 rate_idx = 3;
 749                                 break;
 750                         case DESC92_RATE24M:
 751                                 rate_idx = 4;
 752                                 break;
 753                         case DESC92_RATE36M:
 754                                 rate_idx = 5;
 755                                 break;
 756                         case DESC92_RATE48M:
 757                                 rate_idx = 6;
 758                                 break;
 759                         case DESC92_RATE54M:
 760                                 rate_idx = 7;
 761                                 break;
 762                         default:
 763                                 rate_idx = 0;
 764                                 break;
 765                         }
 766                 }
 767
 768         } else {
 769
 770                 switch (desc_rate) {
 771                 case DESC92_RATEMCS0:
 772                         rate_idx = 0;
 773                         break;
 774                 case DESC92_RATEMCS1:
 775                         rate_idx = 1;
 776                         break;
 777                 case DESC92_RATEMCS2:
 778                         rate_idx = 2;
 779                         break;
 780                 case DESC92_RATEMCS3:
 781                         rate_idx = 3;
 782                         break;
 783                 case DESC92_RATEMCS4:
 784                         rate_idx = 4;
 785                         break;
 786                 case DESC92_RATEMCS5:
 787                         rate_idx = 5;
 788                         break;
 789                 case DESC92_RATEMCS6:
 790                         rate_idx = 6;
 791                         break;
 792                 case DESC92_RATEMCS7:
 793                         rate_idx = 7;
 794                         break;
 795                 case DESC92_RATEMCS8:
 796                         rate_idx = 8;
 797                         break;
 798                 case DESC92_RATEMCS9:
 799                         rate_idx = 9;
 800                         break;
 801                 case DESC92_RATEMCS10:
 802                         rate_idx = 10;
 803                         break;
 804                 case DESC92_RATEMCS11:
 805                         rate_idx = 11;
 806                         break;
 807                 case DESC92_RATEMCS12:
 808                         rate_idx = 12;
 809                         break;
 810                 case DESC92_RATEMCS13:
 811                         rate_idx = 13;
 812                         break;
 813                 case DESC92_RATEMCS14:
 814                         rate_idx = 14;
 815                         break;
 816                 case DESC92_RATEMCS15:
 817                         rate_idx = 15;
 818                         break;
 819                 default:
 820                         rate_idx = 0;
 821                         break;
 822                 }
 823         }
 824         return rate_idx;
 825 }
 826 EXPORT_SYMBOL(rtlwifi_rate_mapping);
 827
 828 void rtl_get_tcb_desc(struct ieee80211_hw *hw,
 829                       struct ieee80211_tx_info *info,
 830                       struct ieee80211_sta *sta,
 831                       struct sk_buff *skb, struct rtl_tcb_desc *tcb_desc)
 832 {
 833         struct rtl_priv *rtlpriv = rtl_priv(hw);
 834         struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
 835         struct ieee80211_hdr *hdr = rtl_get_hdr(skb);
 836         struct ieee80211_rate *txrate;
 837         __le16 fc = hdr->frame_control;
 838
 839         txrate = ieee80211_get_tx_rate(hw, info);
 840         tcb_desc->hw_rate = txrate->hw_value;
 841
 842         if (ieee80211_is_data(fc)) {
 843                 /*
 844                  *we set data rate INX 0
 845                  *in rtl_rc.c   if skb is special data or
 846                  *mgt which need low data rate.
 847                  */
 848
 849                 /*
 850                  *So tcb_desc->hw_rate is just used for
 851                  *special data and mgt frames
 852                  */
 853                 if (info->control.rates[0].idx == 0 ||
 854                                 ieee80211_is_nullfunc(fc)) {
 855                         tcb_desc->use_driver_rate = true;
 856                         tcb_desc->ratr_index = RATR_INX_WIRELESS_MC;
 857
 858                         tcb_desc->disable_ratefallback = 1;
 859                 } else {
 860                         /*
 861                          *because hw will nerver use hw_rate
 862                          *when tcb_desc->use_driver_rate = false
 863                          *so we never set highest N rate here,
 864                          *and N rate will all be controlled by FW
 865                          *when tcb_desc->use_driver_rate = false
 866                          */
 867                         if (sta && (sta->ht_cap.ht_supported)) {
 868                                 tcb_desc->hw_rate = _rtl_get_highest_n_rate(hw);
 869                         } else {
 870                                 if (rtlmac->mode == WIRELESS_MODE_B) {
 871                                         tcb_desc->hw_rate =
 872                                            rtlpriv->cfg->maps[RTL_RC_CCK_RATE11M];
 873                                 } else {
 874                                         tcb_desc->hw_rate =
 875                                            rtlpriv->cfg->maps[RTL_RC_OFDM_RATE54M];
 876                                 }
 877                         }
 878                 }
 879
 880                 if (is_multicast_ether_addr(ieee80211_get_DA(hdr)))
 881                         tcb_desc->multicast = 1;
 882                 else if (is_broadcast_ether_addr(ieee80211_get_DA(hdr)))
 883                         tcb_desc->broadcast = 1;
 884
 885                 _rtl_txrate_selectmode(hw, sta, tcb_desc);
 886                 _rtl_query_bandwidth_mode(hw, sta, tcb_desc);
 887                 _rtl_qurey_shortpreamble_mode(hw, tcb_desc, info);
 888                 _rtl_query_shortgi(hw, sta, tcb_desc, info);
 889                 _rtl_query_protection_mode(hw, tcb_desc, info);
 890         } else {
 891                 tcb_desc->use_driver_rate = true;
 892                 tcb_desc->ratr_index = RATR_INX_WIRELESS_MC;
 893                 tcb_desc->disable_ratefallback = 1;
 894                 tcb_desc->mac_id = 0;
 895                 tcb_desc->packet_bw = false;
 896         }
 897 }
 898 EXPORT_SYMBOL(rtl_get_tcb_desc);
 899
 900 bool rtl_action_proc(struct ieee80211_hw *hw, struct sk_buff *skb, u8 is_tx)
 901 {
 902         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 903         struct ieee80211_hdr *hdr = rtl_get_hdr(skb);
 904         struct rtl_priv *rtlpriv = rtl_priv(hw);
 905         __le16 fc = hdr->frame_control;
 906         u8 *act = (u8 *) (((u8 *) skb->data + MAC80211_3ADDR_LEN));
 907         u8 category;
 908
 909         if (!ieee80211_is_action(fc))
 910                 return true;
 911
 912         category = *act;
 913         act++;
 914         switch (category) {
 915         case ACT_CAT_BA:
 916                 switch (*act) {
 917                 case ACT_ADDBAREQ:
 918                         if (mac->act_scanning)
 919                                 return false;
 920
 921                         RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
 922                                  "%s ACT_ADDBAREQ From :%pM\n",
 923                                  is_tx ? "Tx" : "Rx", hdr->addr2);
 924                         break;
 925                 case ACT_ADDBARSP:
 926                         RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
 927                                  "%s ACT_ADDBARSP From :%pM\n",
 928                                  is_tx ? "Tx" : "Rx", hdr->addr2);
 929                         break;
 930                 case ACT_DELBA:
 931                         RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
 932                                  "ACT_ADDBADEL From :%pM\n", hdr->addr2);
 933                         break;
 934                 }
 935                 break;
 936         default:
 937                 break;
 938         }
 939
 940         return true;
 941 }
 942
 943 /*should call before software enc*/
 944 u8 rtl_is_special_data(struct ieee80211_hw *hw, struct sk_buff *skb, u8 is_tx)
 945 {
 946         struct rtl_priv *rtlpriv = rtl_priv(hw);
 947         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
 948         __le16 fc = rtl_get_fc(skb);
 949         u16 ether_type;
 950         u8 mac_hdr_len = ieee80211_get_hdrlen_from_skb(skb);
 951         const struct iphdr *ip;
 952
 953         if (!ieee80211_is_data(fc))
 954                 return false;
 955
 956
 957         ip = (struct iphdr *)((u8 *) skb->data + mac_hdr_len +
 958                               SNAP_SIZE + PROTOC_TYPE_SIZE);
 959         ether_type = *(u16 *) ((u8 *) skb->data + mac_hdr_len + SNAP_SIZE);
 960         /*      ether_type = ntohs(ether_type); */
 961
 962         if (ETH_P_IP == ether_type) {
 963                 if (IPPROTO_UDP == ip->protocol) {
 964                         struct udphdr *udp = (struct udphdr *)((u8 *) ip +
 965                                                                (ip->ihl << 2));
 966                         if (((((u8 *) udp)[1] == 68) &&
 967                              (((u8 *) udp)[3] == 67)) ||
 968                             ((((u8 *) udp)[1] == 67) &&
 969                              (((u8 *) udp)[3] == 68))) {
 970                                 /*
 971                                  * 68 : UDP BOOTP client
 972                                  * 67 : UDP BOOTP server
 973                                  */
 974                                 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV),
 975                                          DBG_DMESG, "dhcp %s !!\n",
 976                                          is_tx ? "Tx" : "Rx");
 977
 978                                 if (is_tx) {
 979                                         rtl_lps_leave(hw);
 980                                         ppsc->last_delaylps_stamp_jiffies =
 981                                             jiffies;
 982                                 }
 983
 984                                 return true;
 985                         }
 986                 }
 987         } else if (ETH_P_ARP == ether_type) {
 988                 if (is_tx) {
 989                         rtl_lps_leave(hw);
 990                         ppsc->last_delaylps_stamp_jiffies = jiffies;
 991                 }
 992
 993                 return true;
 994         } else if (ETH_P_PAE == ether_type) {
 995                 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
 996                          "802.1X %s EAPOL pkt!!\n", is_tx ? "Tx" : "Rx");
 997
 998                 if (is_tx) {
 999                         rtl_lps_leave(hw);
1000                         ppsc->last_delaylps_stamp_jiffies = jiffies;
1001                 }
1002
1003                 return true;
1004         } else if (ETH_P_IPV6 == ether_type) {
1005                 /* IPv6 */
1006                 return true;
1007         }
1008
1009         return false;
1010 }
1011
1012 /*********************************************************
1013  *
1014  * functions called by core.c
1015  *
1016  *********************************************************/
1017 int rtl_tx_agg_start(struct ieee80211_hw *hw,
1018                 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
1019 {
1020         struct rtl_priv *rtlpriv = rtl_priv(hw);
1021         struct rtl_tid_data *tid_data;
1022         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1023         struct rtl_sta_info *sta_entry = NULL;
1024
1025         if (sta == NULL)
1026                 return -EINVAL;
1027
1028         if (unlikely(tid >= MAX_TID_COUNT))
1029                 return -EINVAL;
1030
1031         sta_entry = (struct rtl_sta_info *)sta->drv_priv;
1032         if (!sta_entry)
1033                 return -ENXIO;
1034         tid_data = &sta_entry->tids[tid];
1035
1036         RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, "on ra = %pM tid = %d seq:%d\n",
1037                  sta->addr, tid, tid_data->seq_number);
1038
1039         *ssn = tid_data->seq_number;
1040         tid_data->agg.agg_state = RTL_AGG_START;
1041
1042         ieee80211_start_tx_ba_cb_irqsafe(mac->vif, sta->addr, tid);
1043
1044         return 0;
1045 }
1046
1047 int rtl_tx_agg_stop(struct ieee80211_hw *hw,
1048                 struct ieee80211_sta *sta, u16 tid)
1049 {
1050         struct rtl_priv *rtlpriv = rtl_priv(hw);
1051         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1052         struct rtl_sta_info *sta_entry = NULL;
1053
1054         if (sta == NULL)
1055                 return -EINVAL;
1056
1057         if (!sta->addr) {
1058                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "ra = NULL\n");
1059                 return -EINVAL;
1060         }
1061
1062         RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, "on ra = %pM tid = %d\n",
1063                  sta->addr, tid);
1064
1065         if (unlikely(tid >= MAX_TID_COUNT))
1066                 return -EINVAL;
1067
1068         sta_entry = (struct rtl_sta_info *)sta->drv_priv;
1069         sta_entry->tids[tid].agg.agg_state = RTL_AGG_STOP;
1070
1071         ieee80211_stop_tx_ba_cb_irqsafe(mac->vif, sta->addr, tid);
1072
1073         return 0;
1074 }
1075
1076 int rtl_tx_agg_oper(struct ieee80211_hw *hw,
1077                 struct ieee80211_sta *sta, u16 tid)
1078 {
1079         struct rtl_priv *rtlpriv = rtl_priv(hw);
1080         struct rtl_sta_info *sta_entry = NULL;
1081
1082         if (sta == NULL)
1083                 return -EINVAL;
1084
1085         if (!sta->addr) {
1086                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "ra = NULL\n");
1087                 return -EINVAL;
1088         }
1089
1090         RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, "on ra = %pM tid = %d\n",
1091                  sta->addr, tid);
1092
1093         if (unlikely(tid >= MAX_TID_COUNT))
1094                 return -EINVAL;
1095
1096         sta_entry = (struct rtl_sta_info *)sta->drv_priv;
1097         sta_entry->tids[tid].agg.agg_state = RTL_AGG_OPERATIONAL;
1098
1099         return 0;
1100 }
1101
1102 /*********************************************************
1103  *
1104  * wq & timer callback functions
1105  *
1106  *********************************************************/
1107 void rtl_watchdog_wq_callback(void *data)
1108 {
1109         struct rtl_works *rtlworks = container_of_dwork_rtl(data,
1110                                                             struct rtl_works,
1111                                                             watchdog_wq);
1112         struct ieee80211_hw *hw = rtlworks->hw;
1113         struct rtl_priv *rtlpriv = rtl_priv(hw);
1114         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
1115         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1116         bool busytraffic = false;
1117         bool higher_busytraffic = false;
1118         bool higher_busyrxtraffic = false;
1119         u8 idx, tid;
1120         u32 rx_cnt_inp4eriod = 0;
1121         u32 tx_cnt_inp4eriod = 0;
1122         u32 aver_rx_cnt_inperiod = 0;
1123         u32 aver_tx_cnt_inperiod = 0;
1124         u32 aver_tidtx_inperiod[MAX_TID_COUNT] = {0};
1125         u32 tidtx_inp4eriod[MAX_TID_COUNT] = {0};
1126         bool enter_ps = false;
1127
1128         if (is_hal_stop(rtlhal))
1129                 return;
1130
1131         /* <1> Determine if action frame is allowed */
1132         if (mac->link_state > MAC80211_NOLINK) {
1133                 if (mac->cnt_after_linked < 20)
1134                         mac->cnt_after_linked++;
1135         } else {
1136                 mac->cnt_after_linked = 0;
1137         }
1138
1139         /*
1140          *<2> to check if traffic busy, if
1141          * busytraffic we don't change channel
1142          */
1143         if (mac->link_state >= MAC80211_LINKED) {
1144
1145                 /* (1) get aver_rx_cnt_inperiod & aver_tx_cnt_inperiod */
1146                 for (idx = 0; idx <= 2; idx++) {
1147                         rtlpriv->link_info.num_rx_in4period[idx] =
1148                             rtlpriv->link_info.num_rx_in4period[idx + 1];
1149                         rtlpriv->link_info.num_tx_in4period[idx] =
1150                             rtlpriv->link_info.num_tx_in4period[idx + 1];
1151                 }
1152                 rtlpriv->link_info.num_rx_in4period[3] =
1153                     rtlpriv->link_info.num_rx_inperiod;
1154                 rtlpriv->link_info.num_tx_in4period[3] =
1155                     rtlpriv->link_info.num_tx_inperiod;
1156                 for (idx = 0; idx <= 3; idx++) {
1157                         rx_cnt_inp4eriod +=
1158                             rtlpriv->link_info.num_rx_in4period[idx];
1159                         tx_cnt_inp4eriod +=
1160                             rtlpriv->link_info.num_tx_in4period[idx];
1161                 }
1162                 aver_rx_cnt_inperiod = rx_cnt_inp4eriod / 4;
1163                 aver_tx_cnt_inperiod = tx_cnt_inp4eriod / 4;
1164
1165                 /* (2) check traffic busy */
1166                 if (aver_rx_cnt_inperiod > 100 || aver_tx_cnt_inperiod > 100)
1167                         busytraffic = true;
1168
1169                 /* Higher Tx/Rx data. */
1170                 if (aver_rx_cnt_inperiod > 4000 ||
1171                     aver_tx_cnt_inperiod > 4000) {
1172                         higher_busytraffic = true;
1173
1174                         /* Extremely high Rx data. */
1175                         if (aver_rx_cnt_inperiod > 5000)
1176                                 higher_busyrxtraffic = true;
1177                 }
1178
1179                 /* check every tid's tx traffic */
1180                 for (tid = 0; tid <= 7; tid++) {
1181                         for (idx = 0; idx <= 2; idx++)
1182                                 rtlpriv->link_info.tidtx_in4period[tid][idx] =
1183                                   rtlpriv->link_info.tidtx_in4period[tid]
1184                                   [idx + 1];
1185                         rtlpriv->link_info.tidtx_in4period[tid][3] =
1186                                 rtlpriv->link_info.tidtx_inperiod[tid];
1187
1188                         for (idx = 0; idx <= 3; idx++)
1189                                 tidtx_inp4eriod[tid] +=
1190                                   rtlpriv->link_info.tidtx_in4period[tid][idx];
1191                         aver_tidtx_inperiod[tid] = tidtx_inp4eriod[tid] / 4;
1192                         if (aver_tidtx_inperiod[tid] > 5000)
1193                                 rtlpriv->link_info.higher_busytxtraffic[tid] =
1194                                                    true;
1195                         else
1196                                 rtlpriv->link_info.higher_busytxtraffic[tid] =
1197                                                    false;
1198                 }
1199
1200                 if (((rtlpriv->link_info.num_rx_inperiod +
1201                       rtlpriv->link_info.num_tx_inperiod) > 8) ||
1202                     (rtlpriv->link_info.num_rx_inperiod > 2))
1203                         enter_ps = false;
1204                 else
1205                         enter_ps = true;
1206
1207                 /* LeisurePS only work in infra mode. */
1208                 if (enter_ps)
1209                         rtl_lps_enter(hw);
1210                 else
1211                         rtl_lps_leave(hw);
1212         }
1213
1214         rtlpriv->link_info.num_rx_inperiod = 0;
1215         rtlpriv->link_info.num_tx_inperiod = 0;
1216         for (tid = 0; tid <= 7; tid++)
1217                 rtlpriv->link_info.tidtx_inperiod[tid] = 0;
1218
1219         rtlpriv->link_info.busytraffic = busytraffic;
1220         rtlpriv->link_info.higher_busytraffic = higher_busytraffic;
1221         rtlpriv->link_info.higher_busyrxtraffic = higher_busyrxtraffic;
1222
1223         /* <3> DM */
1224         rtlpriv->cfg->ops->dm_watchdog(hw);
1225 }
1226
1227 void rtl_watch_dog_timer_callback(unsigned long data)
1228 {
1229         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
1230         struct rtl_priv *rtlpriv = rtl_priv(hw);
1231
1232         queue_delayed_work(rtlpriv->works.rtl_wq,
1233                            &rtlpriv->works.watchdog_wq, 0);
1234
1235         mod_timer(&rtlpriv->works.watchdog_timer,
1236                   jiffies + MSECS(RTL_WATCH_DOG_TIME));
1237 }
1238
1239 /*********************************************************
1240  *
1241  * frame process functions
1242  *
1243  *********************************************************/
1244 u8 *rtl_find_ie(u8 *data, unsigned int len, u8 ie)
1245 {
1246         struct ieee80211_mgmt *mgmt = (void *)data;
1247         u8 *pos, *end;
1248
1249         pos = (u8 *)mgmt->u.beacon.variable;
1250         end = data + len;
1251         while (pos < end) {
1252                 if (pos + 2 + pos[1] > end)
1253                         return NULL;
1254
1255                 if (pos[0] == ie)
1256                         return pos;
1257
1258                 pos += 2 + pos[1];
1259         }
1260         return NULL;
1261 }
1262
1263 /* when we use 2 rx ants we send IEEE80211_SMPS_OFF */
1264 /* when we use 1 rx ant we send IEEE80211_SMPS_STATIC */
1265 static struct sk_buff *rtl_make_smps_action(struct ieee80211_hw *hw,
1266                 enum ieee80211_smps_mode smps, u8 *da, u8 *bssid)
1267 {
1268         struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
1269         struct sk_buff *skb;
1270         struct ieee80211_mgmt *action_frame;
1271
1272         /* 27 = header + category + action + smps mode */
1273         skb = dev_alloc_skb(27 + hw->extra_tx_headroom);
1274         if (!skb)
1275                 return NULL;
1276
1277         skb_reserve(skb, hw->extra_tx_headroom);
1278         action_frame = (void *)skb_put(skb, 27);
1279         memset(action_frame, 0, 27);
1280         memcpy(action_frame->da, da, ETH_ALEN);
1281         memcpy(action_frame->sa, rtlefuse->dev_addr, ETH_ALEN);
1282         memcpy(action_frame->bssid, bssid, ETH_ALEN);
1283         action_frame->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1284                                                   IEEE80211_STYPE_ACTION);
1285         action_frame->u.action.category = WLAN_CATEGORY_HT;
1286         action_frame->u.action.u.ht_smps.action = WLAN_HT_ACTION_SMPS;
1287         switch (smps) {
1288         case IEEE80211_SMPS_AUTOMATIC:/* 0 */
1289         case IEEE80211_SMPS_NUM_MODES:/* 4 */
1290                 WARN_ON(1);
1291         case IEEE80211_SMPS_OFF:/* 1 */ /*MIMO_PS_NOLIMIT*/
1292                 action_frame->u.action.u.ht_smps.smps_control =
1293                                 WLAN_HT_SMPS_CONTROL_DISABLED;/* 0 */
1294                 break;
1295         case IEEE80211_SMPS_STATIC:/* 2 */ /*MIMO_PS_STATIC*/
1296                 action_frame->u.action.u.ht_smps.smps_control =
1297                                 WLAN_HT_SMPS_CONTROL_STATIC;/* 1 */
1298                 break;
1299         case IEEE80211_SMPS_DYNAMIC:/* 3 */ /*MIMO_PS_DYNAMIC*/
1300                 action_frame->u.action.u.ht_smps.smps_control =
1301                                 WLAN_HT_SMPS_CONTROL_DYNAMIC;/* 3 */
1302                 break;
1303         }
1304
1305         return skb;
1306 }
1307
1308 int rtl_send_smps_action(struct ieee80211_hw *hw,
1309                 struct ieee80211_sta *sta, u8 *da, u8 *bssid,
1310                 enum ieee80211_smps_mode smps)
1311 {
1312         struct rtl_priv *rtlpriv = rtl_priv(hw);
1313         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
1314         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
1315         struct sk_buff *skb = rtl_make_smps_action(hw, smps, da, bssid);
1316         struct rtl_tcb_desc tcb_desc;
1317         memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc));
1318
1319         if (rtlpriv->mac80211.act_scanning)
1320                 goto err_free;
1321
1322         if (!sta)
1323                 goto err_free;
1324
1325         if (unlikely(is_hal_stop(rtlhal) || ppsc->rfpwr_state != ERFON))
1326                 goto err_free;
1327
1328         if (!test_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status))
1329                 goto err_free;
1330
1331         /* this is a type = mgmt * stype = action frame */
1332         if (skb) {
1333                 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1334                 struct rtl_sta_info *sta_entry =
1335                         (struct rtl_sta_info *) sta->drv_priv;
1336                 sta_entry->mimo_ps = smps;
1337                 rtlpriv->cfg->ops->update_rate_tbl(hw, sta, 0);
1338
1339                 info->control.rates[0].idx = 0;
1340                 info->control.sta = sta;
1341                 info->band = hw->conf.channel->band;
1342                 rtlpriv->intf_ops->adapter_tx(hw, skb, &tcb_desc);
1343         }
1344 err_free:
1345         return 0;
1346 }
1347
1348 /*********************************************************
1349  *
1350  * IOT functions
1351  *
1352  *********************************************************/
1353 static bool rtl_chk_vendor_ouisub(struct ieee80211_hw *hw,
1354                 struct octet_string vendor_ie)
1355 {
1356         struct rtl_priv *rtlpriv = rtl_priv(hw);
1357         bool matched = false;
1358         static u8 athcap_1[] = { 0x00, 0x03, 0x7F };
1359         static u8 athcap_2[] = { 0x00, 0x13, 0x74 };
1360         static u8 broadcap_1[] = { 0x00, 0x10, 0x18 };
1361         static u8 broadcap_2[] = { 0x00, 0x0a, 0xf7 };
1362         static u8 broadcap_3[] = { 0x00, 0x05, 0xb5 };
1363         static u8 racap[] = { 0x00, 0x0c, 0x43 };
1364         static u8 ciscocap[] = { 0x00, 0x40, 0x96 };
1365         static u8 marvcap[] = { 0x00, 0x50, 0x43 };
1366
1367         if (memcmp(vendor_ie.octet, athcap_1, 3) == 0 ||
1368                 memcmp(vendor_ie.octet, athcap_2, 3) == 0) {
1369                 rtlpriv->mac80211.vendor = PEER_ATH;
1370                 matched = true;
1371         } else if (memcmp(vendor_ie.octet, broadcap_1, 3) == 0 ||
1372                 memcmp(vendor_ie.octet, broadcap_2, 3) == 0 ||
1373                 memcmp(vendor_ie.octet, broadcap_3, 3) == 0) {
1374                 rtlpriv->mac80211.vendor = PEER_BROAD;
1375                 matched = true;
1376         } else if (memcmp(vendor_ie.octet, racap, 3) == 0) {
1377                 rtlpriv->mac80211.vendor = PEER_RAL;
1378                 matched = true;
1379         } else if (memcmp(vendor_ie.octet, ciscocap, 3) == 0) {
1380                 rtlpriv->mac80211.vendor = PEER_CISCO;
1381                 matched = true;
1382         } else if (memcmp(vendor_ie.octet, marvcap, 3) == 0) {
1383                 rtlpriv->mac80211.vendor = PEER_MARV;
1384                 matched = true;
1385         }
1386
1387         return matched;
1388 }
1389
1390 static bool rtl_find_221_ie(struct ieee80211_hw *hw, u8 *data,
1391                 unsigned int len)
1392 {
1393         struct ieee80211_mgmt *mgmt = (void *)data;
1394         struct octet_string vendor_ie;
1395         u8 *pos, *end;
1396
1397         pos = (u8 *)mgmt->u.beacon.variable;
1398         end = data + len;
1399         while (pos < end) {
1400                 if (pos[0] == 221) {
1401                         vendor_ie.length = pos[1];
1402                         vendor_ie.octet = &pos[2];
1403                         if (rtl_chk_vendor_ouisub(hw, vendor_ie))
1404                                 return true;
1405                 }
1406
1407                 if (pos + 2 + pos[1] > end)
1408                         return false;
1409
1410                 pos += 2 + pos[1];
1411         }
1412         return false;
1413 }
1414
1415 void rtl_recognize_peer(struct ieee80211_hw *hw, u8 *data, unsigned int len)
1416 {
1417         struct rtl_priv *rtlpriv = rtl_priv(hw);
1418         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1419         struct ieee80211_hdr *hdr = (void *)data;
1420         u32 vendor = PEER_UNKNOWN;
1421
1422         static u8 ap3_1[3] = { 0x00, 0x14, 0xbf };
1423         static u8 ap3_2[3] = { 0x00, 0x1a, 0x70 };
1424         static u8 ap3_3[3] = { 0x00, 0x1d, 0x7e };
1425         static u8 ap4_1[3] = { 0x00, 0x90, 0xcc };
1426         static u8 ap4_2[3] = { 0x00, 0x0e, 0x2e };
1427         static u8 ap4_3[3] = { 0x00, 0x18, 0x02 };
1428         static u8 ap4_4[3] = { 0x00, 0x17, 0x3f };
1429         static u8 ap4_5[3] = { 0x00, 0x1c, 0xdf };
1430         static u8 ap5_1[3] = { 0x00, 0x1c, 0xf0 };
1431         static u8 ap5_2[3] = { 0x00, 0x21, 0x91 };
1432         static u8 ap5_3[3] = { 0x00, 0x24, 0x01 };
1433         static u8 ap5_4[3] = { 0x00, 0x15, 0xe9 };
1434         static u8 ap5_5[3] = { 0x00, 0x17, 0x9A };
1435         static u8 ap5_6[3] = { 0x00, 0x18, 0xE7 };
1436         static u8 ap6_1[3] = { 0x00, 0x17, 0x94 };
1437         static u8 ap7_1[3] = { 0x00, 0x14, 0xa4 };
1438
1439         if (mac->opmode != NL80211_IFTYPE_STATION)
1440                 return;
1441
1442         if (mac->link_state == MAC80211_NOLINK) {
1443                 mac->vendor = PEER_UNKNOWN;
1444                 return;
1445         }
1446
1447         if (mac->cnt_after_linked > 2)
1448                 return;
1449
1450         /* check if this really is a beacon */
1451         if (!ieee80211_is_beacon(hdr->frame_control))
1452                 return;
1453
1454         /* min. beacon length + FCS_LEN */
1455         if (len <= 40 + FCS_LEN)
1456                 return;
1457
1458         /* and only beacons from the associated BSSID, please */
1459         if (compare_ether_addr(hdr->addr3, rtlpriv->mac80211.bssid))
1460                 return;
1461
1462         if (rtl_find_221_ie(hw, data, len))
1463                 vendor = mac->vendor;
1464
1465         if ((memcmp(mac->bssid, ap5_1, 3) == 0) ||
1466                 (memcmp(mac->bssid, ap5_2, 3) == 0) ||
1467                 (memcmp(mac->bssid, ap5_3, 3) == 0) ||
1468                 (memcmp(mac->bssid, ap5_4, 3) == 0) ||
1469                 (memcmp(mac->bssid, ap5_5, 3) == 0) ||
1470                 (memcmp(mac->bssid, ap5_6, 3) == 0) ||
1471                 vendor == PEER_ATH) {
1472                 vendor = PEER_ATH;
1473                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, "=>ath find\n");
1474         } else if ((memcmp(mac->bssid, ap4_4, 3) == 0) ||
1475                 (memcmp(mac->bssid, ap4_5, 3) == 0) ||
1476                 (memcmp(mac->bssid, ap4_1, 3) == 0) ||
1477                 (memcmp(mac->bssid, ap4_2, 3) == 0) ||
1478                 (memcmp(mac->bssid, ap4_3, 3) == 0) ||
1479                 vendor == PEER_RAL) {
1480                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, "=>ral find\n");
1481                 vendor = PEER_RAL;
1482         } else if (memcmp(mac->bssid, ap6_1, 3) == 0 ||
1483                 vendor == PEER_CISCO) {
1484                 vendor = PEER_CISCO;
1485                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, "=>cisco find\n");
1486         } else if ((memcmp(mac->bssid, ap3_1, 3) == 0) ||
1487                 (memcmp(mac->bssid, ap3_2, 3) == 0) ||
1488                 (memcmp(mac->bssid, ap3_3, 3) == 0) ||
1489                 vendor == PEER_BROAD) {
1490                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, "=>broad find\n");
1491                 vendor = PEER_BROAD;
1492         } else if (memcmp(mac->bssid, ap7_1, 3) == 0 ||
1493                 vendor == PEER_MARV) {
1494                 vendor = PEER_MARV;
1495                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, "=>marv find\n");
1496         }
1497
1498         mac->vendor = vendor;
1499 }
1500
1501 /*********************************************************
1502  *
1503  * sysfs functions
1504  *
1505  *********************************************************/
1506 static ssize_t rtl_show_debug_level(struct device *d,
1507                                     struct device_attribute *attr, char *buf)
1508 {
1509         struct ieee80211_hw *hw = dev_get_drvdata(d);
1510         struct rtl_priv *rtlpriv = rtl_priv(hw);
1511
1512         return sprintf(buf, "0x%08X\n", rtlpriv->dbg.global_debuglevel);
1513 }
1514
1515 static ssize_t rtl_store_debug_level(struct device *d,
1516                                      struct device_attribute *attr,
1517                                      const char *buf, size_t count)
1518 {
1519         struct ieee80211_hw *hw = dev_get_drvdata(d);
1520         struct rtl_priv *rtlpriv = rtl_priv(hw);
1521         unsigned long val;
1522         int ret;
1523
1524         ret = strict_strtoul(buf, 0, &val);
1525         if (ret) {
1526                 printk(KERN_DEBUG "%s is not in hex or decimal form.\n", buf);
1527         } else {
1528                 rtlpriv->dbg.global_debuglevel = val;
1529                 printk(KERN_DEBUG "debuglevel:%x\n",
1530                        rtlpriv->dbg.global_debuglevel);
1531         }
1532
1533         return strnlen(buf, count);
1534 }
1535
1536 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
1537                    rtl_show_debug_level, rtl_store_debug_level);
1538
1539 static struct attribute *rtl_sysfs_entries[] = {
1540
1541         &dev_attr_debug_level.attr,
1542
1543         NULL
1544 };
1545
1546 /*
1547  * "name" is folder name witch will be
1548  * put in device directory like :
1549  * sys/devices/pci0000:00/0000:00:1c.4/
1550  * 0000:06:00.0/rtl_sysfs
1551  */
1552 struct attribute_group rtl_attribute_group = {
1553         .name = "rtlsysfs",
1554         .attrs = rtl_sysfs_entries,
1555 };
1556
1557 MODULE_AUTHOR("lizhaoming       <chaoming_li@realsil.com.cn>");
1558 MODULE_AUTHOR("Realtek WlanFAE  <wlanfae@realtek.com>");
1559 MODULE_AUTHOR("Larry Finger     <Larry.FInger@lwfinger.net>");
1560 MODULE_LICENSE("GPL");
1561 MODULE_DESCRIPTION("Realtek 802.11n PCI wireless core");
1562
1563 static int __init rtl_core_module_init(void)
1564 {
1565         if (rtl_rate_control_register())
1566                 pr_err("Unable to register rtl_rc, use default RC !!\n");
1567
1568         return 0;
1569 }
1570
1571 static void __exit rtl_core_module_exit(void)
1572 {
1573         /*RC*/
1574         rtl_rate_control_unregister();
1575 }
1576
1577 module_init(rtl_core_module_init);
1578 module_exit(rtl_core_module_exit);