drivers/net/wireless/rtlwifi/core.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 #include "wifi.h"
  30 #include "core.h"
  31 #include "cam.h"
  32 #include "base.h"
  33 #include "ps.h"
  34
  35 /*mutex for start & stop is must here. */
  36 static int rtl_op_start(struct ieee80211_hw *hw)
  37 {
  38         int err = 0;
  39         struct rtl_priv *rtlpriv = rtl_priv(hw);
  40         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
  41
  42         if (!is_hal_stop(rtlhal))
  43                 return 0;
  44         if (!test_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status))
  45                 return 0;
  46         mutex_lock(&rtlpriv->locks.conf_mutex);
  47         err = rtlpriv->intf_ops->adapter_start(hw);
  48         if (err)
  49                 goto out;
  50         rtl_watch_dog_timer_callback((unsigned long)hw);
  51 out:
  52         mutex_unlock(&rtlpriv->locks.conf_mutex);
  53         return err;
  54 }
  55
  56 static void rtl_op_stop(struct ieee80211_hw *hw)
  57 {
  58         struct rtl_priv *rtlpriv = rtl_priv(hw);
  59         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
  60         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
  61         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
  62
  63         if (is_hal_stop(rtlhal))
  64                 return;
  65
  66         if (unlikely(ppsc->rfpwr_state == ERFOFF)) {
  67                 rtl_ips_nic_on(hw);
  68                 mdelay(1);
  69         }
  70
  71         mutex_lock(&rtlpriv->locks.conf_mutex);
  72
  73         mac->link_state = MAC80211_NOLINK;
  74         memset(mac->bssid, 0, 6);
  75
  76         /*reset sec info */
  77         rtl_cam_reset_sec_info(hw);
  78
  79         rtl_deinit_deferred_work(hw);
  80         rtlpriv->intf_ops->adapter_stop(hw);
  81
  82         mutex_unlock(&rtlpriv->locks.conf_mutex);
  83 }
  84
  85 static int rtl_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
  86 {
  87         struct rtl_priv *rtlpriv = rtl_priv(hw);
  88         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
  89         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
  90
  91         if (unlikely(is_hal_stop(rtlhal) || ppsc->rfpwr_state != ERFON))
  92                 goto err_free;
  93
  94         if (!test_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status))
  95                 goto err_free;
  96
  97
  98         rtlpriv->intf_ops->adapter_tx(hw, skb);
  99
 100         return NETDEV_TX_OK;
 101
 102 err_free:
 103         dev_kfree_skb_any(skb);
 104         return NETDEV_TX_OK;
 105 }
 106
 107 static int rtl_op_add_interface(struct ieee80211_hw *hw,
 108                 struct ieee80211_vif *vif)
 109 {
 110         struct rtl_priv *rtlpriv = rtl_priv(hw);
 111         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 112         int err = 0;
 113
 114         if (mac->vif) {
 115                 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
 116                          ("vif has been set!! mac->vif = 0x%p\n", mac->vif));
 117                 return -EOPNOTSUPP;
 118         }
 119
 120         rtl_ips_nic_on(hw);
 121
 122         mutex_lock(&rtlpriv->locks.conf_mutex);
 123         switch (vif->type) {
 124         case NL80211_IFTYPE_STATION:
 125                 if (mac->beacon_enabled == 1) {
 126                         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 127                                  ("NL80211_IFTYPE_STATION\n"));
 128                         mac->beacon_enabled = 0;
 129                         rtlpriv->cfg->ops->update_interrupt_mask(hw, 0,
 130                                         rtlpriv->cfg->maps
 131                                         [RTL_IBSS_INT_MASKS]);
 132                 }
 133                 break;
 134         case NL80211_IFTYPE_ADHOC:
 135                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 136                          ("NL80211_IFTYPE_ADHOC\n"));
 137
 138                 mac->link_state = MAC80211_LINKED;
 139                 rtlpriv->cfg->ops->set_bcn_reg(hw);
 140                 break;
 141         case NL80211_IFTYPE_AP:
 142                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 143                          ("NL80211_IFTYPE_AP\n"));
 144                 break;
 145         default:
 146                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
 147                          ("operation mode %d is not support!\n", vif->type));
 148                 err = -EOPNOTSUPP;
 149                 goto out;
 150         }
 151
 152         mac->vif = vif;
 153         mac->opmode = vif->type;
 154         rtlpriv->cfg->ops->set_network_type(hw, vif->type);
 155         memcpy(mac->mac_addr, vif->addr, ETH_ALEN);
 156         rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_ETHER_ADDR, mac->mac_addr);
 157
 158 out:
 159         mutex_unlock(&rtlpriv->locks.conf_mutex);
 160         return err;
 161 }
 162
 163 static void rtl_op_remove_interface(struct ieee80211_hw *hw,
 164                 struct ieee80211_vif *vif)
 165 {
 166         struct rtl_priv *rtlpriv = rtl_priv(hw);
 167         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 168
 169         mutex_lock(&rtlpriv->locks.conf_mutex);
 170
 171         /* Free beacon resources */
 172         if ((mac->opmode == NL80211_IFTYPE_AP) ||
 173             (mac->opmode == NL80211_IFTYPE_ADHOC) ||
 174             (mac->opmode == NL80211_IFTYPE_MESH_POINT)) {
 175                 if (mac->beacon_enabled == 1) {
 176                         mac->beacon_enabled = 0;
 177                         rtlpriv->cfg->ops->update_interrupt_mask(hw, 0,
 178                                         rtlpriv->cfg->maps
 179                                         [RTL_IBSS_INT_MASKS]);
 180                 }
 181         }
 182
 183         /*
 184          *Note: We assume NL80211_IFTYPE_UNSPECIFIED as
 185          *NO LINK for our hardware.
 186          */
 187         mac->vif = NULL;
 188         mac->link_state = MAC80211_NOLINK;
 189         memset(mac->bssid, 0, 6);
 190         mac->opmode = NL80211_IFTYPE_UNSPECIFIED;
 191         rtlpriv->cfg->ops->set_network_type(hw, mac->opmode);
 192
 193         mutex_unlock(&rtlpriv->locks.conf_mutex);
 194 }
 195
 196
 197 static int rtl_op_config(struct ieee80211_hw *hw, u32 changed)
 198 {
 199         struct rtl_priv *rtlpriv = rtl_priv(hw);
 200         struct rtl_phy *rtlphy = &(rtlpriv->phy);
 201         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 202         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
 203         struct ieee80211_conf *conf = &hw->conf;
 204
 205         mutex_lock(&rtlpriv->locks.conf_mutex);
 206         if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) {  /*BIT(2)*/
 207                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 208                          ("IEEE80211_CONF_CHANGE_LISTEN_INTERVAL\n"));
 209         }
 210
 211         /*For IPS */
 212         if (changed & IEEE80211_CONF_CHANGE_IDLE) {
 213                 if (hw->conf.flags & IEEE80211_CONF_IDLE)
 214                         rtl_ips_nic_off(hw);
 215                 else
 216                         rtl_ips_nic_on(hw);
 217         } else {
 218                 /*
 219                  *although rfoff may not cause by ips, but we will
 220                  *check the reason in set_rf_power_state function
 221                  */
 222                 if (unlikely(ppsc->rfpwr_state == ERFOFF))
 223                         rtl_ips_nic_on(hw);
 224         }
 225
 226         /*For LPS */
 227         if (changed & IEEE80211_CONF_CHANGE_PS) {
 228                 if (conf->flags & IEEE80211_CONF_PS)
 229                         rtl_lps_enter(hw);
 230                 else
 231                         rtl_lps_leave(hw);
 232         }
 233
 234         if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) {
 235                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 236                          ("IEEE80211_CONF_CHANGE_RETRY_LIMITS %x\n",
 237                           hw->conf.long_frame_max_tx_count));
 238                 mac->retry_long = hw->conf.long_frame_max_tx_count;
 239                 mac->retry_short = hw->conf.long_frame_max_tx_count;
 240                 rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_RETRY_LIMIT,
 241                                               (u8 *) (&hw->conf.
 242                                                       long_frame_max_tx_count));
 243         }
 244
 245         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 246                 struct ieee80211_channel *channel = hw->conf.channel;
 247                 u8 wide_chan = (u8) channel->hw_value;
 248
 249                 /*
 250                  *because we should back channel to
 251                  *current_network.chan in in scanning,
 252                  *So if set_chan == current_network.chan
 253                  *we should set it.
 254                  *because mac80211 tell us wrong bw40
 255                  *info for cisco1253 bw20, so we modify
 256                  *it here based on UPPER & LOWER
 257                  */
 258                 switch (hw->conf.channel_type) {
 259                 case NL80211_CHAN_HT20:
 260                 case NL80211_CHAN_NO_HT:
 261                         /* SC */
 262                         mac->cur_40_prime_sc =
 263                             PRIME_CHNL_OFFSET_DONT_CARE;
 264                         rtlphy->current_chan_bw = HT_CHANNEL_WIDTH_20;
 265                         mac->bw_40 = false;
 266                         break;
 267                 case NL80211_CHAN_HT40MINUS:
 268                         /* SC */
 269                         mac->cur_40_prime_sc = PRIME_CHNL_OFFSET_UPPER;
 270                         rtlphy->current_chan_bw =
 271                             HT_CHANNEL_WIDTH_20_40;
 272                         mac->bw_40 = true;
 273
 274                         /*wide channel */
 275                         wide_chan -= 2;
 276
 277                         break;
 278                 case NL80211_CHAN_HT40PLUS:
 279                         /* SC */
 280                         mac->cur_40_prime_sc = PRIME_CHNL_OFFSET_LOWER;
 281                         rtlphy->current_chan_bw =
 282                             HT_CHANNEL_WIDTH_20_40;
 283                         mac->bw_40 = true;
 284
 285                         /*wide channel */
 286                         wide_chan += 2;
 287
 288                         break;
 289                 default:
 290                         mac->bw_40 = false;
 291                         RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
 292                                  ("switch case not processed\n"));
 293                         break;
 294                 }
 295
 296                 if (wide_chan <= 0)
 297                         wide_chan = 1;
 298                 rtlphy->current_channel = wide_chan;
 299
 300                 rtlpriv->cfg->ops->set_channel_access(hw);
 301                 rtlpriv->cfg->ops->switch_channel(hw);
 302                 rtlpriv->cfg->ops->set_bw_mode(hw,
 303                                                hw->conf.channel_type);
 304         }
 305
 306         mutex_unlock(&rtlpriv->locks.conf_mutex);
 307
 308         return 0;
 309 }
 310
 311 static void rtl_op_configure_filter(struct ieee80211_hw *hw,
 312                              unsigned int changed_flags,
 313                              unsigned int *new_flags, u64 multicast)
 314 {
 315         struct rtl_priv *rtlpriv = rtl_priv(hw);
 316         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 317
 318         *new_flags &= RTL_SUPPORTED_FILTERS;
 319         if (!changed_flags)
 320                 return;
 321
 322         /*TODO: we disable broadcase now, so enable here */
 323         if (changed_flags & FIF_ALLMULTI) {
 324                 if (*new_flags & FIF_ALLMULTI) {
 325                         mac->rx_conf |= rtlpriv->cfg->maps[MAC_RCR_AM] |
 326                             rtlpriv->cfg->maps[MAC_RCR_AB];
 327                         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 328                                  ("Enable receive multicast frame.\n"));
 329                 } else {
 330                         mac->rx_conf &= ~(rtlpriv->cfg->maps[MAC_RCR_AM] |
 331                                           rtlpriv->cfg->maps[MAC_RCR_AB]);
 332                         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 333                                  ("Disable receive multicast frame.\n"));
 334                 }
 335         }
 336
 337         if (changed_flags & FIF_FCSFAIL) {
 338                 if (*new_flags & FIF_FCSFAIL) {
 339                         mac->rx_conf |= rtlpriv->cfg->maps[MAC_RCR_ACRC32];
 340                         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 341                                  ("Enable receive FCS error frame.\n"));
 342                 } else {
 343                         mac->rx_conf &= ~rtlpriv->cfg->maps[MAC_RCR_ACRC32];
 344                         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 345                                  ("Disable receive FCS error frame.\n"));
 346                 }
 347         }
 348
 349         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
 350                 /*
 351                  *TODO: BIT(5) is probe response BIT(8) is beacon
 352                  *TODO: Use define for BIT(5) and BIT(8)
 353                  */
 354                 if (*new_flags & FIF_BCN_PRBRESP_PROMISC)
 355                         mac->rx_mgt_filter |= (BIT(5) | BIT(8));
 356                 else
 357                         mac->rx_mgt_filter &= ~(BIT(5) | BIT(8));
 358         }
 359
 360         if (changed_flags & FIF_CONTROL) {
 361                 if (*new_flags & FIF_CONTROL) {
 362                         mac->rx_conf |= rtlpriv->cfg->maps[MAC_RCR_ACF];
 363                         mac->rx_ctrl_filter |= RTL_SUPPORTED_CTRL_FILTER;
 364
 365                         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 366                                  ("Enable receive control frame.\n"));
 367                 } else {
 368                         mac->rx_conf &= ~rtlpriv->cfg->maps[MAC_RCR_ACF];
 369                         mac->rx_ctrl_filter &= ~RTL_SUPPORTED_CTRL_FILTER;
 370                         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 371                                  ("Disable receive control frame.\n"));
 372                 }
 373         }
 374
 375         if (changed_flags & FIF_OTHER_BSS) {
 376                 if (*new_flags & FIF_OTHER_BSS) {
 377                         mac->rx_conf |= rtlpriv->cfg->maps[MAC_RCR_AAP];
 378                         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 379                                  ("Enable receive other BSS's frame.\n"));
 380                 } else {
 381                         mac->rx_conf &= ~rtlpriv->cfg->maps[MAC_RCR_AAP];
 382                         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 383                                  ("Disable receive other BSS's frame.\n"));
 384                 }
 385         }
 386
 387         rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_RCR, (u8 *) (&mac->rx_conf));
 388         rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_MGT_FILTER,
 389                                       (u8 *) (&mac->rx_mgt_filter));
 390         rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_CTRL_FILTER,
 391                                       (u8 *) (&mac->rx_ctrl_filter));
 392 }
 393
 394 static int _rtl_get_hal_qnum(u16 queue)
 395 {
 396         int qnum;
 397
 398         switch (queue) {
 399         case 0:
 400                 qnum = AC3_VO;
 401                 break;
 402         case 1:
 403                 qnum = AC2_VI;
 404                 break;
 405         case 2:
 406                 qnum = AC0_BE;
 407                 break;
 408         case 3:
 409                 qnum = AC1_BK;
 410                 break;
 411         default:
 412                 qnum = AC0_BE;
 413                 break;
 414         }
 415         return qnum;
 416 }
 417
 418 /*
 419  *for mac80211 VO=0, VI=1, BE=2, BK=3
 420  *for rtl819x  BE=0, BK=1, VI=2, VO=3
 421  */
 422 static int rtl_op_conf_tx(struct ieee80211_hw *hw, u16 queue,
 423                    const struct ieee80211_tx_queue_params *param)
 424 {
 425         struct rtl_priv *rtlpriv = rtl_priv(hw);
 426         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 427         int aci;
 428
 429         if (queue >= AC_MAX) {
 430                 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
 431                          ("queue number %d is incorrect!\n", queue));
 432                 return -EINVAL;
 433         }
 434
 435         aci = _rtl_get_hal_qnum(queue);
 436         mac->ac[aci].aifs = param->aifs;
 437         mac->ac[aci].cw_min = param->cw_min;
 438         mac->ac[aci].cw_max = param->cw_max;
 439         mac->ac[aci].tx_op = param->txop;
 440         memcpy(&mac->edca_param[aci], param, sizeof(*param));
 441         rtlpriv->cfg->ops->set_qos(hw, aci);
 442         return 0;
 443 }
 444
 445 static void rtl_op_bss_info_changed(struct ieee80211_hw *hw,
 446                              struct ieee80211_vif *vif,
 447                              struct ieee80211_bss_conf *bss_conf, u32 changed)
 448 {
 449         struct rtl_priv *rtlpriv = rtl_priv(hw);
 450         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 451         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
 452
 453         mutex_lock(&rtlpriv->locks.conf_mutex);
 454
 455         if ((vif->type == NL80211_IFTYPE_ADHOC) ||
 456             (vif->type == NL80211_IFTYPE_AP) ||
 457             (vif->type == NL80211_IFTYPE_MESH_POINT)) {
 458
 459                 if ((changed & BSS_CHANGED_BEACON) ||
 460                     (changed & BSS_CHANGED_BEACON_ENABLED &&
 461                      bss_conf->enable_beacon)) {
 462
 463                         if (mac->beacon_enabled == 0) {
 464                                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_DMESG,
 465                                          ("BSS_CHANGED_BEACON_ENABLED\n"));
 466
 467                                 /*start hw beacon interrupt. */
 468                                 /*rtlpriv->cfg->ops->set_bcn_reg(hw); */
 469                                 mac->beacon_enabled = 1;
 470                                 rtlpriv->cfg->ops->update_interrupt_mask(hw,
 471                                                 rtlpriv->cfg->maps
 472                                                 [RTL_IBSS_INT_MASKS],
 473                                                 0);
 474                         }
 475                 } else {
 476                         if (mac->beacon_enabled == 1) {
 477                                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_DMESG,
 478                                          ("ADHOC DISABLE BEACON\n"));
 479
 480                                 mac->beacon_enabled = 0;
 481                                 rtlpriv->cfg->ops->update_interrupt_mask(hw, 0,
 482                                                 rtlpriv->cfg->maps
 483                                                 [RTL_IBSS_INT_MASKS]);
 484                         }
 485                 }
 486
 487                 if (changed & BSS_CHANGED_BEACON_INT) {
 488                         RT_TRACE(rtlpriv, COMP_BEACON, DBG_TRACE,
 489                                  ("BSS_CHANGED_BEACON_INT\n"));
 490                         mac->beacon_interval = bss_conf->beacon_int;
 491                         rtlpriv->cfg->ops->set_bcn_intv(hw);
 492                 }
 493         }
 494
 495         /*TODO: reference to enum ieee80211_bss_change */
 496         if (changed & BSS_CHANGED_ASSOC) {
 497                 if (bss_conf->assoc) {
 498                         mac->link_state = MAC80211_LINKED;
 499                         mac->cnt_after_linked = 0;
 500                         mac->assoc_id = bss_conf->aid;
 501                         memcpy(mac->bssid, bss_conf->bssid, 6);
 502
 503                         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_DMESG,
 504                                  ("BSS_CHANGED_ASSOC\n"));
 505                 } else {
 506                         if (mac->link_state == MAC80211_LINKED)
 507                                 rtl_lps_leave(hw);
 508
 509                         mac->link_state = MAC80211_NOLINK;
 510                         memset(mac->bssid, 0, 6);
 511
 512                         /* reset sec info */
 513                         rtl_cam_reset_sec_info(hw);
 514
 515                         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_DMESG,
 516                                  ("BSS_CHANGED_UN_ASSOC\n"));
 517                 }
 518         }
 519
 520         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
 521                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE,
 522                          ("BSS_CHANGED_ERP_CTS_PROT\n"));
 523                 mac->use_cts_protect = bss_conf->use_cts_prot;
 524         }
 525
 526         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
 527                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 528                          ("BSS_CHANGED_ERP_PREAMBLE use short preamble:%x\n",
 529                           bss_conf->use_short_preamble));
 530
 531                 mac->short_preamble = bss_conf->use_short_preamble;
 532                 rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_ACK_PREAMBLE,
 533                                               (u8 *) (&mac->short_preamble));
 534         }
 535
 536         if (changed & BSS_CHANGED_ERP_SLOT) {
 537                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE,
 538                          ("BSS_CHANGED_ERP_SLOT\n"));
 539
 540                 if (bss_conf->use_short_slot)
 541                         mac->slot_time = RTL_SLOT_TIME_9;
 542                 else
 543                         mac->slot_time = RTL_SLOT_TIME_20;
 544
 545                 rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_SLOT_TIME,
 546                                               (u8 *) (&mac->slot_time));
 547         }
 548
 549         if (changed & BSS_CHANGED_HT) {
 550                 struct ieee80211_sta *sta = NULL;
 551
 552                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE,
 553                          ("BSS_CHANGED_HT\n"));
 554
 555                 sta = ieee80211_find_sta(mac->vif, mac->bssid);
 556
 557                 if (sta) {
 558                         if (sta->ht_cap.ampdu_density >
 559                             mac->current_ampdu_density)
 560                                 mac->current_ampdu_density =
 561                                     sta->ht_cap.ampdu_density;
 562                         if (sta->ht_cap.ampdu_factor <
 563                             mac->current_ampdu_factor)
 564                                 mac->current_ampdu_factor =
 565                                     sta->ht_cap.ampdu_factor;
 566                 }
 567
 568                 rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_SHORTGI_DENSITY,
 569                                               (u8 *) (&mac->max_mss_density));
 570                 rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_AMPDU_FACTOR,
 571                                               &mac->current_ampdu_factor);
 572                 rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_AMPDU_MIN_SPACE,
 573                                               &mac->current_ampdu_density);
 574         }
 575
 576         if (changed & BSS_CHANGED_BSSID) {
 577                 struct ieee80211_sta *sta = NULL;
 578                 u32 basic_rates;
 579                 u8 i;
 580
 581                 rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_BSSID,
 582                                               (u8 *) bss_conf->bssid);
 583
 584                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_DMESG,
 585                          (MAC_FMT "\n", MAC_ARG(bss_conf->bssid)));
 586
 587                 memcpy(mac->bssid, bss_conf->bssid, 6);
 588                 if (is_valid_ether_addr(bss_conf->bssid)) {
 589                         switch (vif->type) {
 590                         case NL80211_IFTYPE_UNSPECIFIED:
 591                                 break;
 592                         case NL80211_IFTYPE_ADHOC:
 593                                 break;
 594                         case NL80211_IFTYPE_STATION:
 595                                 break;
 596                         case NL80211_IFTYPE_AP:
 597                                 break;
 598                         default:
 599                                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
 600                                          ("switch case not process\n"));
 601                                 break;
 602                         }
 603                         rtlpriv->cfg->ops->set_network_type(hw, vif->type);
 604                 } else
 605                         rtlpriv->cfg->ops->set_network_type(hw,
 606                                         NL80211_IFTYPE_UNSPECIFIED);
 607
 608                 memset(mac->mcs, 0, 16);
 609                 mac->ht_enable = false;
 610                 mac->sgi_40 = false;
 611                 mac->sgi_20 = false;
 612
 613                 if (!bss_conf->use_short_slot)
 614                         mac->mode = WIRELESS_MODE_B;
 615                 else
 616                         mac->mode = WIRELESS_MODE_G;
 617
 618                 sta = ieee80211_find_sta(mac->vif, mac->bssid);
 619
 620                 if (sta) {
 621                         if (sta->ht_cap.ht_supported) {
 622                                 mac->mode = WIRELESS_MODE_N_24G;
 623                                 mac->ht_enable = true;
 624                         }
 625
 626                         if (mac->ht_enable) {
 627                                 u16 ht_cap = sta->ht_cap.cap;
 628                                 memcpy(mac->mcs, (u8 *) (&sta->ht_cap.mcs), 16);
 629
 630                                 for (i = 0; i < 16; i++)
 631                                         RT_TRACE(rtlpriv, COMP_MAC80211,
 632                                                  DBG_LOUD, ("%x ",
 633                                                             mac->mcs[i]));
 634                                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 635                                          ("\n"));
 636
 637                                 if (ht_cap & IEEE80211_HT_CAP_SGI_40)
 638                                         mac->sgi_40 = true;
 639
 640                                 if (ht_cap & IEEE80211_HT_CAP_SGI_20)
 641                                         mac->sgi_20 = true;
 642
 643                                 /*
 644                                  * for cisco 1252 bw20 it's wrong
 645                                  * if (ht_cap &
 646                                  *     IEEE80211_HT_CAP_SUP_WIDTH_20_40) {
 647                                  *      mac->bw_40 = true;
 648                                  * }
 649                                  */
 650                         }
 651                 }
 652
 653                 /*mac80211 just give us CCK rates any time
 654                  *So we add G rate in basic rates when
 655                  not in B mode*/
 656                 if (changed & BSS_CHANGED_BASIC_RATES) {
 657                         if (mac->mode == WIRELESS_MODE_B)
 658                                 basic_rates = bss_conf->basic_rates | 0x00f;
 659                         else
 660                                 basic_rates = bss_conf->basic_rates | 0xff0;
 661
 662                         if (!vif)
 663                                 goto out;
 664
 665                         mac->basic_rates = basic_rates;
 666                         rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_BASIC_RATE,
 667                                         (u8 *) (&basic_rates));
 668
 669                         if (rtlpriv->dm.b_useramask)
 670                                 rtlpriv->cfg->ops->update_rate_mask(hw, 0);
 671                         else
 672                                 rtlpriv->cfg->ops->update_rate_table(hw);
 673
 674                 }
 675         }
 676
 677         /*
 678          * For FW LPS:
 679          * To tell firmware we have connected
 680          * to an AP. For 92SE/CE power save v2.
 681          */
 682         if (changed & BSS_CHANGED_ASSOC) {
 683                 if (bss_conf->assoc) {
 684                         if (ppsc->b_fwctrl_lps) {
 685                                 u8 mstatus = RT_MEDIA_CONNECT;
 686                                 rtlpriv->cfg->ops->set_hw_reg(hw,
 687                                                       HW_VAR_H2C_FW_JOINBSSRPT,
 688                                                       (u8 *) (&mstatus));
 689                                 ppsc->report_linked = true;
 690                         }
 691                 } else {
 692                         if (ppsc->b_fwctrl_lps) {
 693                                 u8 mstatus = RT_MEDIA_DISCONNECT;
 694                                 rtlpriv->cfg->ops->set_hw_reg(hw,
 695                                                       HW_VAR_H2C_FW_JOINBSSRPT,
 696                                                       (u8 *)(&mstatus));
 697                                 ppsc->report_linked = false;
 698                         }
 699                 }
 700         }
 701
 702 out:
 703         mutex_unlock(&rtlpriv->locks.conf_mutex);
 704 }
 705
 706 static u64 rtl_op_get_tsf(struct ieee80211_hw *hw)
 707 {
 708         struct rtl_priv *rtlpriv = rtl_priv(hw);
 709         u64 tsf;
 710
 711         rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_CORRECT_TSF, (u8 *) (&tsf));
 712         return tsf;
 713 }
 714
 715 static void rtl_op_set_tsf(struct ieee80211_hw *hw, u64 tsf)
 716 {
 717         struct rtl_priv *rtlpriv = rtl_priv(hw);
 718         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 719         u8 bibss = (mac->opmode == NL80211_IFTYPE_ADHOC) ? 1 : 0;;
 720
 721         mac->tsf = tsf;
 722         rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_CORRECT_TSF, (u8 *) (&bibss));
 723 }
 724
 725 static void rtl_op_reset_tsf(struct ieee80211_hw *hw)
 726 {
 727         struct rtl_priv *rtlpriv = rtl_priv(hw);
 728         u8 tmp = 0;
 729
 730         rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_DUAL_TSF_RST, (u8 *) (&tmp));
 731 }
 732
 733 static void rtl_op_sta_notify(struct ieee80211_hw *hw,
 734                               struct ieee80211_vif *vif,
 735                               enum sta_notify_cmd cmd,
 736                               struct ieee80211_sta *sta)
 737 {
 738         switch (cmd) {
 739         case STA_NOTIFY_SLEEP:
 740                 break;
 741         case STA_NOTIFY_AWAKE:
 742                 break;
 743         default:
 744                 break;
 745         }
 746 }
 747
 748 static int rtl_op_ampdu_action(struct ieee80211_hw *hw,
 749                                struct ieee80211_vif *vif,
 750                                enum ieee80211_ampdu_mlme_action action,
 751                                struct ieee80211_sta *sta, u16 tid, u16 * ssn)
 752 {
 753         struct rtl_priv *rtlpriv = rtl_priv(hw);
 754
 755         switch (action) {
 756         case IEEE80211_AMPDU_TX_START:
 757                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE,
 758                          ("IEEE80211_AMPDU_TX_START: TID:%d\n", tid));
 759                 return rtl_tx_agg_start(hw, sta->addr, tid, ssn);
 760                 break;
 761         case IEEE80211_AMPDU_TX_STOP:
 762                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE,
 763                          ("IEEE80211_AMPDU_TX_STOP: TID:%d\n", tid));
 764                 return rtl_tx_agg_stop(hw, sta->addr, tid);
 765                 break;
 766         case IEEE80211_AMPDU_TX_OPERATIONAL:
 767                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE,
 768                          ("IEEE80211_AMPDU_TX_OPERATIONAL:TID:%d\n", tid));
 769                 break;
 770         case IEEE80211_AMPDU_RX_START:
 771                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE,
 772                          ("IEEE80211_AMPDU_RX_START:TID:%d\n", tid));
 773                 break;
 774         case IEEE80211_AMPDU_RX_STOP:
 775                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE,
 776                          ("IEEE80211_AMPDU_RX_STOP:TID:%d\n", tid));
 777                 break;
 778         default:
 779                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
 780                          ("IEEE80211_AMPDU_ERR!!!!:\n"));
 781                 return -EOPNOTSUPP;
 782         }
 783         return 0;
 784 }
 785
 786 static void rtl_op_sw_scan_start(struct ieee80211_hw *hw)
 787 {
 788         struct rtl_priv *rtlpriv = rtl_priv(hw);
 789         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 790
 791         mac->act_scanning = true;
 792
 793         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, ("\n"));
 794
 795         if (mac->link_state == MAC80211_LINKED) {
 796                 rtl_lps_leave(hw);
 797                 mac->link_state = MAC80211_LINKED_SCANNING;
 798         } else
 799                 rtl_ips_nic_on(hw);
 800
 801         rtlpriv->cfg->ops->led_control(hw, LED_CTL_SITE_SURVEY);
 802         rtlpriv->cfg->ops->scan_operation_backup(hw, SCAN_OPT_BACKUP);
 803 }
 804
 805 static void rtl_op_sw_scan_complete(struct ieee80211_hw *hw)
 806 {
 807         struct rtl_priv *rtlpriv = rtl_priv(hw);
 808         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 809
 810         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, ("\n"));
 811
 812         rtlpriv->cfg->ops->scan_operation_backup(hw, SCAN_OPT_RESTORE);
 813         mac->act_scanning = false;
 814         if (mac->link_state == MAC80211_LINKED_SCANNING) {
 815                 mac->link_state = MAC80211_LINKED;
 816
 817                 /* fix fwlps issue */
 818                 rtlpriv->cfg->ops->set_network_type(hw, mac->opmode);
 819
 820                 if (rtlpriv->dm.b_useramask)
 821                         rtlpriv->cfg->ops->update_rate_mask(hw, 0);
 822                 else
 823                         rtlpriv->cfg->ops->update_rate_table(hw);
 824
 825         }
 826
 827 }
 828
 829 static int rtl_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 830                           struct ieee80211_vif *vif, struct ieee80211_sta *sta,
 831                           struct ieee80211_key_conf *key)
 832 {
 833         struct rtl_priv *rtlpriv = rtl_priv(hw);
 834         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 835         u8 key_type = NO_ENCRYPTION;
 836         u8 key_idx;
 837         bool group_key = false;
 838         bool wep_only = false;
 839         int err = 0;
 840         u8 mac_addr[ETH_ALEN];
 841         u8 bcast_addr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 842         u8 zero_addr[ETH_ALEN] = { 0 };
 843
 844         if (rtlpriv->cfg->mod_params->sw_crypto || rtlpriv->sec.use_sw_sec) {
 845                 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
 846                          ("not open hw encryption\n"));
 847                 return -ENOSPC; /*User disabled HW-crypto */
 848         }
 849         RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
 850                  ("%s hardware based encryption for keyidx: %d, mac: %pM\n",
 851                   cmd == SET_KEY ? "Using" : "Disabling", key->keyidx,
 852                   sta ? sta->addr : bcast_addr));
 853         rtlpriv->sec.being_setkey = true;
 854         rtl_ips_nic_on(hw);
 855         mutex_lock(&rtlpriv->locks.conf_mutex);
 856         /* <1> get encryption alg */
 857         switch (key->cipher) {
 858         case WLAN_CIPHER_SUITE_WEP40:
 859                 key_type = WEP40_ENCRYPTION;
 860                 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, ("alg:WEP40\n"));
 861                 rtlpriv->sec.use_defaultkey = true;
 862                 break;
 863         case WLAN_CIPHER_SUITE_WEP104:
 864                 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
 865                          ("alg:WEP104\n"));
 866                 key_type = WEP104_ENCRYPTION;
 867                 rtlpriv->sec.use_defaultkey = true;
 868                 break;
 869         case WLAN_CIPHER_SUITE_TKIP:
 870                 key_type = TKIP_ENCRYPTION;
 871                 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, ("alg:TKIP\n"));
 872                 if (mac->opmode == NL80211_IFTYPE_ADHOC)
 873                         rtlpriv->sec.use_defaultkey = true;
 874                 break;
 875         case WLAN_CIPHER_SUITE_CCMP:
 876                 key_type = AESCCMP_ENCRYPTION;
 877                 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, ("alg:CCMP\n"));
 878                 if (mac->opmode == NL80211_IFTYPE_ADHOC)
 879                         rtlpriv->sec.use_defaultkey = true;
 880                 break;
 881         default:
 882                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
 883                          ("alg_err:%x!!!!:\n", key->cipher));
 884                 goto out_unlock;
 885         }
 886         /* <2> get key_idx */
 887         key_idx = (u8) (key->keyidx);
 888         if (key_idx > 3)
 889                 goto out_unlock;
 890         /* <3> if pairwise key enable_hw_sec */
 891         group_key = !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE);
 892         if ((!group_key) || (mac->opmode == NL80211_IFTYPE_ADHOC) ||
 893             rtlpriv->sec.pairwise_enc_algorithm == NO_ENCRYPTION) {
 894                 if (rtlpriv->sec.pairwise_enc_algorithm == NO_ENCRYPTION &&
 895                     (key_type == WEP40_ENCRYPTION ||
 896                      key_type == WEP104_ENCRYPTION))
 897                         wep_only = true;
 898                 rtlpriv->sec.pairwise_enc_algorithm = key_type;
 899                 rtlpriv->cfg->ops->enable_hw_sec(hw);
 900         }
 901         /* <4> set key based on cmd */
 902         switch (cmd) {
 903         case SET_KEY:
 904                 if (wep_only) {
 905                         RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
 906                                  ("set WEP(group/pairwise) key\n"));
 907                         /* Pairwise key with an assigned MAC address. */
 908                         rtlpriv->sec.pairwise_enc_algorithm = key_type;
 909                         rtlpriv->sec.group_enc_algorithm = key_type;
 910                         /*set local buf about wep key. */
 911                         memcpy(rtlpriv->sec.key_buf[key_idx],
 912                                key->key, key->keylen);
 913                         rtlpriv->sec.key_len[key_idx] = key->keylen;
 914                         memcpy(mac_addr, zero_addr, ETH_ALEN);
 915                 } else if (group_key) { /* group key */
 916                         RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
 917                                  ("set group key\n"));
 918                         /* group key */
 919                         rtlpriv->sec.group_enc_algorithm = key_type;
 920                         /*set local buf about group key. */
 921                         memcpy(rtlpriv->sec.key_buf[key_idx],
 922                                key->key, key->keylen);
 923                         rtlpriv->sec.key_len[key_idx] = key->keylen;
 924                         memcpy(mac_addr, bcast_addr, ETH_ALEN);
 925                 } else {        /* pairwise key */
 926                         RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
 927                                  ("set pairwise key\n"));
 928                         if (!sta) {
 929                                 RT_ASSERT(false, ("pairwise key withnot"
 930                                                   "mac_addr\n"));
 931                                 err = -EOPNOTSUPP;
 932                                 goto out_unlock;
 933                         }
 934                         /* Pairwise key with an assigned MAC address. */
 935                         rtlpriv->sec.pairwise_enc_algorithm = key_type;
 936                         /*set local buf about pairwise key. */
 937                         memcpy(rtlpriv->sec.key_buf[PAIRWISE_KEYIDX],
 938                                key->key, key->keylen);
 939                         rtlpriv->sec.key_len[PAIRWISE_KEYIDX] = key->keylen;
 940                         rtlpriv->sec.pairwise_key =
 941                             rtlpriv->sec.key_buf[PAIRWISE_KEYIDX];
 942                         memcpy(mac_addr, sta->addr, ETH_ALEN);
 943                 }
 944                 rtlpriv->cfg->ops->set_key(hw, key_idx, mac_addr,
 945                                            group_key, key_type, wep_only,
 946                                            false);
 947                 /* <5> tell mac80211 do something: */
 948                 /*must use sw generate IV, or can not work !!!!. */
 949                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
 950                 key->hw_key_idx = key_idx;
 951                 if (key_type == TKIP_ENCRYPTION)
 952                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
 953                 break;
 954         case DISABLE_KEY:
 955                 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
 956                          ("disable key delete one entry\n"));
 957                 /*set local buf about wep key. */
 958                 memset(rtlpriv->sec.key_buf[key_idx], 0, key->keylen);
 959                 rtlpriv->sec.key_len[key_idx] = 0;
 960                 memcpy(mac_addr, zero_addr, ETH_ALEN);
 961                 /*
 962                  *mac80211 will delete entrys one by one,
 963                  *so don't use rtl_cam_reset_all_entry
 964                  *or clear all entry here.
 965                  */
 966                 rtl_cam_delete_one_entry(hw, mac_addr, key_idx);
 967                 break;
 968         default:
 969                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
 970                          ("cmd_err:%x!!!!:\n", cmd));
 971         }
 972 out_unlock:
 973         mutex_unlock(&rtlpriv->locks.conf_mutex);
 974         rtlpriv->sec.being_setkey = false;
 975         return err;
 976 }
 977
 978 static void rtl_op_rfkill_poll(struct ieee80211_hw *hw)
 979 {
 980         struct rtl_priv *rtlpriv = rtl_priv(hw);
 981
 982         bool radio_state;
 983         bool blocked;
 984         u8 valid = 0;
 985
 986         if (!test_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status))
 987                 return;
 988
 989         mutex_lock(&rtlpriv->locks.conf_mutex);
 990
 991         /*if Radio On return true here */
 992         radio_state = rtlpriv->cfg->ops->radio_onoff_checking(hw, &valid);
 993
 994         if (valid) {
 995                 if (unlikely(radio_state != rtlpriv->rfkill.rfkill_state)) {
 996                         rtlpriv->rfkill.rfkill_state = radio_state;
 997
 998                         RT_TRACE(rtlpriv, COMP_RF, DBG_DMESG,
 999                                  (KERN_INFO "wireless radio switch turned %s\n",
1000                                   radio_state ? "on" : "off"));
1001
1002                         blocked = (rtlpriv->rfkill.rfkill_state == 1) ? 0 : 1;
1003                         wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
1004                 }
1005         }
1006
1007         mutex_unlock(&rtlpriv->locks.conf_mutex);
1008 }
1009
1010 const struct ieee80211_ops rtl_ops = {
1011         .start = rtl_op_start,
1012         .stop = rtl_op_stop,
1013         .tx = rtl_op_tx,
1014         .add_interface = rtl_op_add_interface,
1015         .remove_interface = rtl_op_remove_interface,
1016         .config = rtl_op_config,
1017         .configure_filter = rtl_op_configure_filter,
1018         .set_key = rtl_op_set_key,
1019         .conf_tx = rtl_op_conf_tx,
1020         .bss_info_changed = rtl_op_bss_info_changed,
1021         .get_tsf = rtl_op_get_tsf,
1022         .set_tsf = rtl_op_set_tsf,
1023         .reset_tsf = rtl_op_reset_tsf,
1024         .sta_notify = rtl_op_sta_notify,
1025         .ampdu_action = rtl_op_ampdu_action,
1026         .sw_scan_start = rtl_op_sw_scan_start,
1027         .sw_scan_complete = rtl_op_sw_scan_complete,
1028         .rfkill_poll = rtl_op_rfkill_poll,
1029 };