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 void 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;
 101
 102 err_free:
 103         dev_kfree_skb_any(skb);
 104 }
 105
 106 static int rtl_op_add_interface(struct ieee80211_hw *hw,
 107                 struct ieee80211_vif *vif)
 108 {
 109         struct rtl_priv *rtlpriv = rtl_priv(hw);
 110         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 111         int err = 0;
 112
 113         if (mac->vif) {
 114                 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
 115                          ("vif has been set!! mac->vif = 0x%p\n", mac->vif));
 116                 return -EOPNOTSUPP;
 117         }
 118
 119         rtl_ips_nic_on(hw);
 120
 121         mutex_lock(&rtlpriv->locks.conf_mutex);
 122         switch (vif->type) {
 123         case NL80211_IFTYPE_STATION:
 124                 if (mac->beacon_enabled == 1) {
 125                         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 126                                  ("NL80211_IFTYPE_STATION\n"));
 127                         mac->beacon_enabled = 0;
 128                         rtlpriv->cfg->ops->update_interrupt_mask(hw, 0,
 129                                         rtlpriv->cfg->maps
 130                                         [RTL_IBSS_INT_MASKS]);
 131                 }
 132                 break;
 133         case NL80211_IFTYPE_ADHOC:
 134                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 135                          ("NL80211_IFTYPE_ADHOC\n"));
 136
 137                 mac->link_state = MAC80211_LINKED;
 138                 rtlpriv->cfg->ops->set_bcn_reg(hw);
 139                 break;
 140         case NL80211_IFTYPE_AP:
 141                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 142                          ("NL80211_IFTYPE_AP\n"));
 143                 break;
 144         default:
 145                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
 146                          ("operation mode %d is not support!\n", vif->type));
 147                 err = -EOPNOTSUPP;
 148                 goto out;
 149         }
 150
 151         mac->vif = vif;
 152         mac->opmode = vif->type;
 153         rtlpriv->cfg->ops->set_network_type(hw, vif->type);
 154         memcpy(mac->mac_addr, vif->addr, ETH_ALEN);
 155         rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_ETHER_ADDR, mac->mac_addr);
 156
 157 out:
 158         mutex_unlock(&rtlpriv->locks.conf_mutex);
 159         return err;
 160 }
 161
 162 static void rtl_op_remove_interface(struct ieee80211_hw *hw,
 163                 struct ieee80211_vif *vif)
 164 {
 165         struct rtl_priv *rtlpriv = rtl_priv(hw);
 166         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 167
 168         mutex_lock(&rtlpriv->locks.conf_mutex);
 169
 170         /* Free beacon resources */
 171         if ((mac->opmode == NL80211_IFTYPE_AP) ||
 172             (mac->opmode == NL80211_IFTYPE_ADHOC) ||
 173             (mac->opmode == NL80211_IFTYPE_MESH_POINT)) {
 174                 if (mac->beacon_enabled == 1) {
 175                         mac->beacon_enabled = 0;
 176                         rtlpriv->cfg->ops->update_interrupt_mask(hw, 0,
 177                                         rtlpriv->cfg->maps
 178                                         [RTL_IBSS_INT_MASKS]);
 179                 }
 180         }
 181
 182         /*
 183          *Note: We assume NL80211_IFTYPE_UNSPECIFIED as
 184          *NO LINK for our hardware.
 185          */
 186         mac->vif = NULL;
 187         mac->link_state = MAC80211_NOLINK;
 188         memset(mac->bssid, 0, 6);
 189         mac->opmode = NL80211_IFTYPE_UNSPECIFIED;
 190         rtlpriv->cfg->ops->set_network_type(hw, mac->opmode);
 191
 192         mutex_unlock(&rtlpriv->locks.conf_mutex);
 193 }
 194
 195
 196 static int rtl_op_config(struct ieee80211_hw *hw, u32 changed)
 197 {
 198         struct rtl_priv *rtlpriv = rtl_priv(hw);
 199         struct rtl_phy *rtlphy = &(rtlpriv->phy);
 200         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 201         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
 202         struct ieee80211_conf *conf = &hw->conf;
 203
 204         mutex_lock(&rtlpriv->locks.conf_mutex);
 205         if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) {  /*BIT(2)*/
 206                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 207                          ("IEEE80211_CONF_CHANGE_LISTEN_INTERVAL\n"));
 208         }
 209
 210         /*For IPS */
 211         if (changed & IEEE80211_CONF_CHANGE_IDLE) {
 212                 if (hw->conf.flags & IEEE80211_CONF_IDLE)
 213                         rtl_ips_nic_off(hw);
 214                 else
 215                         rtl_ips_nic_on(hw);
 216         } else {
 217                 /*
 218                  *although rfoff may not cause by ips, but we will
 219                  *check the reason in set_rf_power_state function
 220                  */
 221                 if (unlikely(ppsc->rfpwr_state == ERFOFF))
 222                         rtl_ips_nic_on(hw);
 223         }
 224
 225         /*For LPS */
 226         if (changed & IEEE80211_CONF_CHANGE_PS) {
 227                 if (conf->flags & IEEE80211_CONF_PS)
 228                         rtl_lps_enter(hw);
 229                 else
 230                         rtl_lps_leave(hw);
 231         }
 232
 233         if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) {
 234                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 235                          ("IEEE80211_CONF_CHANGE_RETRY_LIMITS %x\n",
 236                           hw->conf.long_frame_max_tx_count));
 237                 mac->retry_long = hw->conf.long_frame_max_tx_count;
 238                 mac->retry_short = hw->conf.long_frame_max_tx_count;
 239                 rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_RETRY_LIMIT,
 240                                               (u8 *) (&hw->conf.
 241                                                       long_frame_max_tx_count));
 242         }
 243
 244         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 245                 struct ieee80211_channel *channel = hw->conf.channel;
 246                 u8 wide_chan = (u8) channel->hw_value;
 247
 248                 /*
 249                  *because we should back channel to
 250                  *current_network.chan in in scanning,
 251                  *So if set_chan == current_network.chan
 252                  *we should set it.
 253                  *because mac80211 tell us wrong bw40
 254                  *info for cisco1253 bw20, so we modify
 255                  *it here based on UPPER & LOWER
 256                  */
 257                 switch (hw->conf.channel_type) {
 258                 case NL80211_CHAN_HT20:
 259                 case NL80211_CHAN_NO_HT:
 260                         /* SC */
 261                         mac->cur_40_prime_sc =
 262                             PRIME_CHNL_OFFSET_DONT_CARE;
 263                         rtlphy->current_chan_bw = HT_CHANNEL_WIDTH_20;
 264                         mac->bw_40 = false;
 265                         break;
 266                 case NL80211_CHAN_HT40MINUS:
 267                         /* SC */
 268                         mac->cur_40_prime_sc = PRIME_CHNL_OFFSET_UPPER;
 269                         rtlphy->current_chan_bw =
 270                             HT_CHANNEL_WIDTH_20_40;
 271                         mac->bw_40 = true;
 272
 273                         /*wide channel */
 274                         wide_chan -= 2;
 275
 276                         break;
 277                 case NL80211_CHAN_HT40PLUS:
 278                         /* SC */
 279                         mac->cur_40_prime_sc = PRIME_CHNL_OFFSET_LOWER;
 280                         rtlphy->current_chan_bw =
 281                             HT_CHANNEL_WIDTH_20_40;
 282                         mac->bw_40 = true;
 283
 284                         /*wide channel */
 285                         wide_chan += 2;
 286
 287                         break;
 288                 default:
 289                         mac->bw_40 = false;
 290                         RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
 291                                  ("switch case not processed\n"));
 292                         break;
 293                 }
 294
 295                 if (wide_chan <= 0)
 296                         wide_chan = 1;
 297                 rtlphy->current_channel = wide_chan;
 298
 299                 rtlpriv->cfg->ops->set_channel_access(hw);
 300                 rtlpriv->cfg->ops->switch_channel(hw);
 301                 rtlpriv->cfg->ops->set_bw_mode(hw,
 302                                                hw->conf.channel_type);
 303         }
 304
 305         mutex_unlock(&rtlpriv->locks.conf_mutex);
 306
 307         return 0;
 308 }
 309
 310 static void rtl_op_configure_filter(struct ieee80211_hw *hw,
 311                              unsigned int changed_flags,
 312                              unsigned int *new_flags, u64 multicast)
 313 {
 314         struct rtl_priv *rtlpriv = rtl_priv(hw);
 315         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 316
 317         *new_flags &= RTL_SUPPORTED_FILTERS;
 318         if (!changed_flags)
 319                 return;
 320
 321         /*TODO: we disable broadcase now, so enable here */
 322         if (changed_flags & FIF_ALLMULTI) {
 323                 if (*new_flags & FIF_ALLMULTI) {
 324                         mac->rx_conf |= rtlpriv->cfg->maps[MAC_RCR_AM] |
 325                             rtlpriv->cfg->maps[MAC_RCR_AB];
 326                         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 327                                  ("Enable receive multicast frame.\n"));
 328                 } else {
 329                         mac->rx_conf &= ~(rtlpriv->cfg->maps[MAC_RCR_AM] |
 330                                           rtlpriv->cfg->maps[MAC_RCR_AB]);
 331                         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 332                                  ("Disable receive multicast frame.\n"));
 333                 }
 334         }
 335
 336         if (changed_flags & FIF_FCSFAIL) {
 337                 if (*new_flags & FIF_FCSFAIL) {
 338                         mac->rx_conf |= rtlpriv->cfg->maps[MAC_RCR_ACRC32];
 339                         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 340                                  ("Enable receive FCS error frame.\n"));
 341                 } else {
 342                         mac->rx_conf &= ~rtlpriv->cfg->maps[MAC_RCR_ACRC32];
 343                         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 344                                  ("Disable receive FCS error frame.\n"));
 345                 }
 346         }
 347
 348         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
 349                 /*
 350                  *TODO: BIT(5) is probe response BIT(8) is beacon
 351                  *TODO: Use define for BIT(5) and BIT(8)
 352                  */
 353                 if (*new_flags & FIF_BCN_PRBRESP_PROMISC)
 354                         mac->rx_mgt_filter |= (BIT(5) | BIT(8));
 355                 else
 356                         mac->rx_mgt_filter &= ~(BIT(5) | BIT(8));
 357         }
 358
 359         if (changed_flags & FIF_CONTROL) {
 360                 if (*new_flags & FIF_CONTROL) {
 361                         mac->rx_conf |= rtlpriv->cfg->maps[MAC_RCR_ACF];
 362                         mac->rx_ctrl_filter |= RTL_SUPPORTED_CTRL_FILTER;
 363
 364                         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 365                                  ("Enable receive control frame.\n"));
 366                 } else {
 367                         mac->rx_conf &= ~rtlpriv->cfg->maps[MAC_RCR_ACF];
 368                         mac->rx_ctrl_filter &= ~RTL_SUPPORTED_CTRL_FILTER;
 369                         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 370                                  ("Disable receive control frame.\n"));
 371                 }
 372         }
 373
 374         if (changed_flags & FIF_OTHER_BSS) {
 375                 if (*new_flags & FIF_OTHER_BSS) {
 376                         mac->rx_conf |= rtlpriv->cfg->maps[MAC_RCR_AAP];
 377                         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 378                                  ("Enable receive other BSS's frame.\n"));
 379                 } else {
 380                         mac->rx_conf &= ~rtlpriv->cfg->maps[MAC_RCR_AAP];
 381                         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 382                                  ("Disable receive other BSS's frame.\n"));
 383                 }
 384         }
 385
 386         rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_RCR, (u8 *) (&mac->rx_conf));
 387         rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_MGT_FILTER,
 388                                       (u8 *) (&mac->rx_mgt_filter));
 389         rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_CTRL_FILTER,
 390                                       (u8 *) (&mac->rx_ctrl_filter));
 391 }
 392
 393 static int _rtl_get_hal_qnum(u16 queue)
 394 {
 395         int qnum;
 396
 397         switch (queue) {
 398         case 0:
 399                 qnum = AC3_VO;
 400                 break;
 401         case 1:
 402                 qnum = AC2_VI;
 403                 break;
 404         case 2:
 405                 qnum = AC0_BE;
 406                 break;
 407         case 3:
 408                 qnum = AC1_BK;
 409                 break;
 410         default:
 411                 qnum = AC0_BE;
 412                 break;
 413         }
 414         return qnum;
 415 }
 416
 417 /*
 418  *for mac80211 VO=0, VI=1, BE=2, BK=3
 419  *for rtl819x  BE=0, BK=1, VI=2, VO=3
 420  */
 421 static int rtl_op_conf_tx(struct ieee80211_hw *hw, u16 queue,
 422                    const struct ieee80211_tx_queue_params *param)
 423 {
 424         struct rtl_priv *rtlpriv = rtl_priv(hw);
 425         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 426         int aci;
 427
 428         if (queue >= AC_MAX) {
 429                 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
 430                          ("queue number %d is incorrect!\n", queue));
 431                 return -EINVAL;
 432         }
 433
 434         aci = _rtl_get_hal_qnum(queue);
 435         mac->ac[aci].aifs = param->aifs;
 436         mac->ac[aci].cw_min = cpu_to_le16(param->cw_min);
 437         mac->ac[aci].cw_max = cpu_to_le16(param->cw_max);
 438         mac->ac[aci].tx_op = cpu_to_le16(param->txop);
 439         memcpy(&mac->edca_param[aci], param, sizeof(*param));
 440         rtlpriv->cfg->ops->set_qos(hw, aci);
 441         return 0;
 442 }
 443
 444 static void rtl_op_bss_info_changed(struct ieee80211_hw *hw,
 445                              struct ieee80211_vif *vif,
 446                              struct ieee80211_bss_conf *bss_conf, u32 changed)
 447 {
 448         struct rtl_priv *rtlpriv = rtl_priv(hw);
 449         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 450         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
 451
 452         mutex_lock(&rtlpriv->locks.conf_mutex);
 453
 454         if ((vif->type == NL80211_IFTYPE_ADHOC) ||
 455             (vif->type == NL80211_IFTYPE_AP) ||
 456             (vif->type == NL80211_IFTYPE_MESH_POINT)) {
 457
 458                 if ((changed & BSS_CHANGED_BEACON) ||
 459                     (changed & BSS_CHANGED_BEACON_ENABLED &&
 460                      bss_conf->enable_beacon)) {
 461
 462                         if (mac->beacon_enabled == 0) {
 463                                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_DMESG,
 464                                          ("BSS_CHANGED_BEACON_ENABLED\n"));
 465
 466                                 /*start hw beacon interrupt. */
 467                                 /*rtlpriv->cfg->ops->set_bcn_reg(hw); */
 468                                 mac->beacon_enabled = 1;
 469                                 rtlpriv->cfg->ops->update_interrupt_mask(hw,
 470                                                 rtlpriv->cfg->maps
 471                                                 [RTL_IBSS_INT_MASKS],
 472                                                 0);
 473                         }
 474                 } else {
 475                         if (mac->beacon_enabled == 1) {
 476                                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_DMESG,
 477                                          ("ADHOC DISABLE BEACON\n"));
 478
 479                                 mac->beacon_enabled = 0;
 480                                 rtlpriv->cfg->ops->update_interrupt_mask(hw, 0,
 481                                                 rtlpriv->cfg->maps
 482                                                 [RTL_IBSS_INT_MASKS]);
 483                         }
 484                 }
 485
 486                 if (changed & BSS_CHANGED_BEACON_INT) {
 487                         RT_TRACE(rtlpriv, COMP_BEACON, DBG_TRACE,
 488                                  ("BSS_CHANGED_BEACON_INT\n"));
 489                         mac->beacon_interval = bss_conf->beacon_int;
 490                         rtlpriv->cfg->ops->set_bcn_intv(hw);
 491                 }
 492         }
 493
 494         /*TODO: reference to enum ieee80211_bss_change */
 495         if (changed & BSS_CHANGED_ASSOC) {
 496                 if (bss_conf->assoc) {
 497                         mac->link_state = MAC80211_LINKED;
 498                         mac->cnt_after_linked = 0;
 499                         mac->assoc_id = bss_conf->aid;
 500                         memcpy(mac->bssid, bss_conf->bssid, 6);
 501
 502                         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_DMESG,
 503                                  ("BSS_CHANGED_ASSOC\n"));
 504                 } else {
 505                         if (mac->link_state == MAC80211_LINKED)
 506                                 rtl_lps_leave(hw);
 507
 508                         mac->link_state = MAC80211_NOLINK;
 509                         memset(mac->bssid, 0, 6);
 510
 511                         /* reset sec info */
 512                         rtl_cam_reset_sec_info(hw);
 513
 514                         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_DMESG,
 515                                  ("BSS_CHANGED_UN_ASSOC\n"));
 516                 }
 517         }
 518
 519         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
 520                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE,
 521                          ("BSS_CHANGED_ERP_CTS_PROT\n"));
 522                 mac->use_cts_protect = bss_conf->use_cts_prot;
 523         }
 524
 525         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
 526                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 527                          ("BSS_CHANGED_ERP_PREAMBLE use short preamble:%x\n",
 528                           bss_conf->use_short_preamble));
 529
 530                 mac->short_preamble = bss_conf->use_short_preamble;
 531                 rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_ACK_PREAMBLE,
 532                                               (u8 *) (&mac->short_preamble));
 533         }
 534
 535         if (changed & BSS_CHANGED_ERP_SLOT) {
 536                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE,
 537                          ("BSS_CHANGED_ERP_SLOT\n"));
 538
 539                 if (bss_conf->use_short_slot)
 540                         mac->slot_time = RTL_SLOT_TIME_9;
 541                 else
 542                         mac->slot_time = RTL_SLOT_TIME_20;
 543
 544                 rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_SLOT_TIME,
 545                                               (u8 *) (&mac->slot_time));
 546         }
 547
 548         if (changed & BSS_CHANGED_HT) {
 549                 struct ieee80211_sta *sta = NULL;
 550
 551                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE,
 552                          ("BSS_CHANGED_HT\n"));
 553
 554                 rcu_read_lock();
 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                 rcu_read_unlock();
 568
 569                 rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_SHORTGI_DENSITY,
 570                                               (u8 *) (&mac->max_mss_density));
 571                 rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_AMPDU_FACTOR,
 572                                               &mac->current_ampdu_factor);
 573                 rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_AMPDU_MIN_SPACE,
 574                                               &mac->current_ampdu_density);
 575         }
 576
 577         if (changed & BSS_CHANGED_BSSID) {
 578                 struct ieee80211_sta *sta = NULL;
 579                 u32 basic_rates;
 580                 u8 i;
 581
 582                 rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_BSSID,
 583                                               (u8 *) bss_conf->bssid);
 584
 585                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_DMESG,
 586                          (MAC_FMT "\n", MAC_ARG(bss_conf->bssid)));
 587
 588                 memcpy(mac->bssid, bss_conf->bssid, 6);
 589                 if (is_valid_ether_addr(bss_conf->bssid)) {
 590                         switch (vif->type) {
 591                         case NL80211_IFTYPE_UNSPECIFIED:
 592                                 break;
 593                         case NL80211_IFTYPE_ADHOC:
 594                                 break;
 595                         case NL80211_IFTYPE_STATION:
 596                                 break;
 597                         case NL80211_IFTYPE_AP:
 598                                 break;
 599                         default:
 600                                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
 601                                          ("switch case not process\n"));
 602                                 break;
 603                         }
 604                         rtlpriv->cfg->ops->set_network_type(hw, vif->type);
 605                 } else
 606                         rtlpriv->cfg->ops->set_network_type(hw,
 607                                         NL80211_IFTYPE_UNSPECIFIED);
 608
 609                 memset(mac->mcs, 0, 16);
 610                 mac->ht_enable = false;
 611                 mac->sgi_40 = false;
 612                 mac->sgi_20 = false;
 613
 614                 if (!bss_conf->use_short_slot)
 615                         mac->mode = WIRELESS_MODE_B;
 616                 else
 617                         mac->mode = WIRELESS_MODE_G;
 618
 619                 rcu_read_lock();
 620                 sta = ieee80211_find_sta(mac->vif, mac->bssid);
 621
 622                 if (sta) {
 623                         if (sta->ht_cap.ht_supported) {
 624                                 mac->mode = WIRELESS_MODE_N_24G;
 625                                 mac->ht_enable = true;
 626                         }
 627
 628                         if (mac->ht_enable) {
 629                                 u16 ht_cap = sta->ht_cap.cap;
 630                                 memcpy(mac->mcs, (u8 *) (&sta->ht_cap.mcs), 16);
 631
 632                                 for (i = 0; i < 16; i++)
 633                                         RT_TRACE(rtlpriv, COMP_MAC80211,
 634                                                  DBG_LOUD, ("%x ",
 635                                                             mac->mcs[i]));
 636                                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 637                                          ("\n"));
 638
 639                                 if (ht_cap & IEEE80211_HT_CAP_SGI_40)
 640                                         mac->sgi_40 = true;
 641
 642                                 if (ht_cap & IEEE80211_HT_CAP_SGI_20)
 643                                         mac->sgi_20 = true;
 644
 645                                 /*
 646                                  * for cisco 1252 bw20 it's wrong
 647                                  * if (ht_cap &
 648                                  *     IEEE80211_HT_CAP_SUP_WIDTH_20_40) {
 649                                  *      mac->bw_40 = true;
 650                                  * }
 651                                  */
 652                         }
 653                 }
 654                 rcu_read_unlock();
 655
 656                 /*mac80211 just give us CCK rates any time
 657                  *So we add G rate in basic rates when
 658                  not in B mode*/
 659                 if (changed & BSS_CHANGED_BASIC_RATES) {
 660                         if (mac->mode == WIRELESS_MODE_B)
 661                                 basic_rates = bss_conf->basic_rates | 0x00f;
 662                         else
 663                                 basic_rates = bss_conf->basic_rates | 0xff0;
 664
 665                         if (!vif)
 666                                 goto out;
 667
 668                         mac->basic_rates = basic_rates;
 669                         rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_BASIC_RATE,
 670                                         (u8 *) (&basic_rates));
 671
 672                         if (rtlpriv->dm.useramask)
 673                                 rtlpriv->cfg->ops->update_rate_mask(hw, 0);
 674                         else
 675                                 rtlpriv->cfg->ops->update_rate_table(hw);
 676
 677                 }
 678         }
 679
 680         /*
 681          * For FW LPS:
 682          * To tell firmware we have connected
 683          * to an AP. For 92SE/CE power save v2.
 684          */
 685         if (changed & BSS_CHANGED_ASSOC) {
 686                 if (bss_conf->assoc) {
 687                         if (ppsc->fwctrl_lps) {
 688                                 u8 mstatus = RT_MEDIA_CONNECT;
 689                                 rtlpriv->cfg->ops->set_hw_reg(hw,
 690                                                       HW_VAR_H2C_FW_JOINBSSRPT,
 691                                                       (u8 *) (&mstatus));
 692                                 ppsc->report_linked = true;
 693                         }
 694                 } else {
 695                         if (ppsc->fwctrl_lps) {
 696                                 u8 mstatus = RT_MEDIA_DISCONNECT;
 697                                 rtlpriv->cfg->ops->set_hw_reg(hw,
 698                                                       HW_VAR_H2C_FW_JOINBSSRPT,
 699                                                       (u8 *)(&mstatus));
 700                                 ppsc->report_linked = false;
 701                         }
 702                 }
 703         }
 704
 705 out:
 706         mutex_unlock(&rtlpriv->locks.conf_mutex);
 707 }
 708
 709 static u64 rtl_op_get_tsf(struct ieee80211_hw *hw)
 710 {
 711         struct rtl_priv *rtlpriv = rtl_priv(hw);
 712         u64 tsf;
 713
 714         rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_CORRECT_TSF, (u8 *) (&tsf));
 715         return tsf;
 716 }
 717
 718 static void rtl_op_set_tsf(struct ieee80211_hw *hw, u64 tsf)
 719 {
 720         struct rtl_priv *rtlpriv = rtl_priv(hw);
 721         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 722         u8 bibss = (mac->opmode == NL80211_IFTYPE_ADHOC) ? 1 : 0;
 723
 724         mac->tsf = tsf;
 725         rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_CORRECT_TSF, (u8 *) (&bibss));
 726 }
 727
 728 static void rtl_op_reset_tsf(struct ieee80211_hw *hw)
 729 {
 730         struct rtl_priv *rtlpriv = rtl_priv(hw);
 731         u8 tmp = 0;
 732
 733         rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_DUAL_TSF_RST, (u8 *) (&tmp));
 734 }
 735
 736 static void rtl_op_sta_notify(struct ieee80211_hw *hw,
 737                               struct ieee80211_vif *vif,
 738                               enum sta_notify_cmd cmd,
 739                               struct ieee80211_sta *sta)
 740 {
 741         switch (cmd) {
 742         case STA_NOTIFY_SLEEP:
 743                 break;
 744         case STA_NOTIFY_AWAKE:
 745                 break;
 746         default:
 747                 break;
 748         }
 749 }
 750
 751 static int rtl_op_ampdu_action(struct ieee80211_hw *hw,
 752                                struct ieee80211_vif *vif,
 753                                enum ieee80211_ampdu_mlme_action action,
 754                                struct ieee80211_sta *sta, u16 tid, u16 *ssn,
 755                                u8 buf_size)
 756 {
 757         struct rtl_priv *rtlpriv = rtl_priv(hw);
 758
 759         switch (action) {
 760         case IEEE80211_AMPDU_TX_START:
 761                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE,
 762                          ("IEEE80211_AMPDU_TX_START: TID:%d\n", tid));
 763                 return rtl_tx_agg_start(hw, sta->addr, tid, ssn);
 764                 break;
 765         case IEEE80211_AMPDU_TX_STOP:
 766                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE,
 767                          ("IEEE80211_AMPDU_TX_STOP: TID:%d\n", tid));
 768                 return rtl_tx_agg_stop(hw, sta->addr, tid);
 769                 break;
 770         case IEEE80211_AMPDU_TX_OPERATIONAL:
 771                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE,
 772                          ("IEEE80211_AMPDU_TX_OPERATIONAL:TID:%d\n", tid));
 773                 break;
 774         case IEEE80211_AMPDU_RX_START:
 775                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE,
 776                          ("IEEE80211_AMPDU_RX_START:TID:%d\n", tid));
 777                 break;
 778         case IEEE80211_AMPDU_RX_STOP:
 779                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE,
 780                          ("IEEE80211_AMPDU_RX_STOP:TID:%d\n", tid));
 781                 break;
 782         default:
 783                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
 784                          ("IEEE80211_AMPDU_ERR!!!!:\n"));
 785                 return -EOPNOTSUPP;
 786         }
 787         return 0;
 788 }
 789
 790 static void rtl_op_sw_scan_start(struct ieee80211_hw *hw)
 791 {
 792         struct rtl_priv *rtlpriv = rtl_priv(hw);
 793         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 794
 795         mac->act_scanning = true;
 796
 797         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, ("\n"));
 798
 799         if (mac->link_state == MAC80211_LINKED) {
 800                 rtl_lps_leave(hw);
 801                 mac->link_state = MAC80211_LINKED_SCANNING;
 802         } else
 803                 rtl_ips_nic_on(hw);
 804
 805         rtlpriv->cfg->ops->led_control(hw, LED_CTL_SITE_SURVEY);
 806         rtlpriv->cfg->ops->scan_operation_backup(hw, SCAN_OPT_BACKUP);
 807 }
 808
 809 static void rtl_op_sw_scan_complete(struct ieee80211_hw *hw)
 810 {
 811         struct rtl_priv *rtlpriv = rtl_priv(hw);
 812         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 813
 814         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, ("\n"));
 815
 816         rtlpriv->cfg->ops->scan_operation_backup(hw, SCAN_OPT_RESTORE);
 817         mac->act_scanning = false;
 818         if (mac->link_state == MAC80211_LINKED_SCANNING) {
 819                 mac->link_state = MAC80211_LINKED;
 820
 821                 /* fix fwlps issue */
 822                 rtlpriv->cfg->ops->set_network_type(hw, mac->opmode);
 823
 824                 if (rtlpriv->dm.useramask)
 825                         rtlpriv->cfg->ops->update_rate_mask(hw, 0);
 826                 else
 827                         rtlpriv->cfg->ops->update_rate_table(hw);
 828
 829         }
 830
 831 }
 832
 833 static int rtl_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 834                           struct ieee80211_vif *vif, struct ieee80211_sta *sta,
 835                           struct ieee80211_key_conf *key)
 836 {
 837         struct rtl_priv *rtlpriv = rtl_priv(hw);
 838         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 839         u8 key_type = NO_ENCRYPTION;
 840         u8 key_idx;
 841         bool group_key = false;
 842         bool wep_only = false;
 843         int err = 0;
 844         u8 mac_addr[ETH_ALEN];
 845         u8 bcast_addr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 846         u8 zero_addr[ETH_ALEN] = { 0 };
 847
 848         if (rtlpriv->cfg->mod_params->sw_crypto || rtlpriv->sec.use_sw_sec) {
 849                 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
 850                          ("not open hw encryption\n"));
 851                 return -ENOSPC; /*User disabled HW-crypto */
 852         }
 853         RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
 854                  ("%s hardware based encryption for keyidx: %d, mac: %pM\n",
 855                   cmd == SET_KEY ? "Using" : "Disabling", key->keyidx,
 856                   sta ? sta->addr : bcast_addr));
 857         rtlpriv->sec.being_setkey = true;
 858         rtl_ips_nic_on(hw);
 859         mutex_lock(&rtlpriv->locks.conf_mutex);
 860         /* <1> get encryption alg */
 861         switch (key->cipher) {
 862         case WLAN_CIPHER_SUITE_WEP40:
 863                 key_type = WEP40_ENCRYPTION;
 864                 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, ("alg:WEP40\n"));
 865                 rtlpriv->sec.use_defaultkey = true;
 866                 break;
 867         case WLAN_CIPHER_SUITE_WEP104:
 868                 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
 869                          ("alg:WEP104\n"));
 870                 key_type = WEP104_ENCRYPTION;
 871                 rtlpriv->sec.use_defaultkey = true;
 872                 break;
 873         case WLAN_CIPHER_SUITE_TKIP:
 874                 key_type = TKIP_ENCRYPTION;
 875                 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, ("alg:TKIP\n"));
 876                 if (mac->opmode == NL80211_IFTYPE_ADHOC)
 877                         rtlpriv->sec.use_defaultkey = true;
 878                 break;
 879         case WLAN_CIPHER_SUITE_CCMP:
 880                 key_type = AESCCMP_ENCRYPTION;
 881                 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, ("alg:CCMP\n"));
 882                 if (mac->opmode == NL80211_IFTYPE_ADHOC)
 883                         rtlpriv->sec.use_defaultkey = true;
 884                 break;
 885         default:
 886                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
 887                          ("alg_err:%x!!!!:\n", key->cipher));
 888                 goto out_unlock;
 889         }
 890         /* <2> get key_idx */
 891         key_idx = (u8) (key->keyidx);
 892         if (key_idx > 3)
 893                 goto out_unlock;
 894         /* <3> if pairwise key enable_hw_sec */
 895         group_key = !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE);
 896         if ((!group_key) || (mac->opmode == NL80211_IFTYPE_ADHOC) ||
 897             rtlpriv->sec.pairwise_enc_algorithm == NO_ENCRYPTION) {
 898                 if (rtlpriv->sec.pairwise_enc_algorithm == NO_ENCRYPTION &&
 899                     (key_type == WEP40_ENCRYPTION ||
 900                      key_type == WEP104_ENCRYPTION))
 901                         wep_only = true;
 902                 rtlpriv->sec.pairwise_enc_algorithm = key_type;
 903                 rtlpriv->cfg->ops->enable_hw_sec(hw);
 904         }
 905         /* <4> set key based on cmd */
 906         switch (cmd) {
 907         case SET_KEY:
 908                 if (wep_only) {
 909                         RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
 910                                  ("set WEP(group/pairwise) key\n"));
 911                         /* Pairwise key with an assigned MAC address. */
 912                         rtlpriv->sec.pairwise_enc_algorithm = key_type;
 913                         rtlpriv->sec.group_enc_algorithm = key_type;
 914                         /*set local buf about wep key. */
 915                         memcpy(rtlpriv->sec.key_buf[key_idx],
 916                                key->key, key->keylen);
 917                         rtlpriv->sec.key_len[key_idx] = key->keylen;
 918                         memcpy(mac_addr, zero_addr, ETH_ALEN);
 919                 } else if (group_key) { /* group key */
 920                         RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
 921                                  ("set group key\n"));
 922                         /* group key */
 923                         rtlpriv->sec.group_enc_algorithm = key_type;
 924                         /*set local buf about group key. */
 925                         memcpy(rtlpriv->sec.key_buf[key_idx],
 926                                key->key, key->keylen);
 927                         rtlpriv->sec.key_len[key_idx] = key->keylen;
 928                         memcpy(mac_addr, bcast_addr, ETH_ALEN);
 929                 } else {        /* pairwise key */
 930                         RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
 931                                  ("set pairwise key\n"));
 932                         if (!sta) {
 933                                 RT_ASSERT(false, ("pairwise key withnot"
 934                                                   "mac_addr\n"));
 935                                 err = -EOPNOTSUPP;
 936                                 goto out_unlock;
 937                         }
 938                         /* Pairwise key with an assigned MAC address. */
 939                         rtlpriv->sec.pairwise_enc_algorithm = key_type;
 940                         /*set local buf about pairwise key. */
 941                         memcpy(rtlpriv->sec.key_buf[PAIRWISE_KEYIDX],
 942                                key->key, key->keylen);
 943                         rtlpriv->sec.key_len[PAIRWISE_KEYIDX] = key->keylen;
 944                         rtlpriv->sec.pairwise_key =
 945                             rtlpriv->sec.key_buf[PAIRWISE_KEYIDX];
 946                         memcpy(mac_addr, sta->addr, ETH_ALEN);
 947                 }
 948                 rtlpriv->cfg->ops->set_key(hw, key_idx, mac_addr,
 949                                            group_key, key_type, wep_only,
 950                                            false);
 951                 /* <5> tell mac80211 do something: */
 952                 /*must use sw generate IV, or can not work !!!!. */
 953                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
 954                 key->hw_key_idx = key_idx;
 955                 if (key_type == TKIP_ENCRYPTION)
 956                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
 957                 break;
 958         case DISABLE_KEY:
 959                 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
 960                          ("disable key delete one entry\n"));
 961                 /*set local buf about wep key. */
 962                 memset(rtlpriv->sec.key_buf[key_idx], 0, key->keylen);
 963                 rtlpriv->sec.key_len[key_idx] = 0;
 964                 memcpy(mac_addr, zero_addr, ETH_ALEN);
 965                 /*
 966                  *mac80211 will delete entrys one by one,
 967                  *so don't use rtl_cam_reset_all_entry
 968                  *or clear all entry here.
 969                  */
 970                 rtl_cam_delete_one_entry(hw, mac_addr, key_idx);
 971                 break;
 972         default:
 973                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
 974                          ("cmd_err:%x!!!!:\n", cmd));
 975         }
 976 out_unlock:
 977         mutex_unlock(&rtlpriv->locks.conf_mutex);
 978         rtlpriv->sec.being_setkey = false;
 979         return err;
 980 }
 981
 982 static void rtl_op_rfkill_poll(struct ieee80211_hw *hw)
 983 {
 984         struct rtl_priv *rtlpriv = rtl_priv(hw);
 985
 986         bool radio_state;
 987         bool blocked;
 988         u8 valid = 0;
 989
 990         if (!test_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status))
 991                 return;
 992
 993         mutex_lock(&rtlpriv->locks.conf_mutex);
 994
 995         /*if Radio On return true here */
 996         radio_state = rtlpriv->cfg->ops->radio_onoff_checking(hw, &valid);
 997
 998         if (valid) {
 999                 if (unlikely(radio_state != rtlpriv->rfkill.rfkill_state)) {
1000                         rtlpriv->rfkill.rfkill_state = radio_state;
1001
1002                         RT_TRACE(rtlpriv, COMP_RF, DBG_DMESG,
1003                                  (KERN_INFO "wireless radio switch turned %s\n",
1004                                   radio_state ? "on" : "off"));
1005
1006                         blocked = (rtlpriv->rfkill.rfkill_state == 1) ? 0 : 1;
1007                         wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
1008                 }
1009         }
1010
1011         mutex_unlock(&rtlpriv->locks.conf_mutex);
1012 }
1013
1014 const struct ieee80211_ops rtl_ops = {
1015         .start = rtl_op_start,
1016         .stop = rtl_op_stop,
1017         .tx = rtl_op_tx,
1018         .add_interface = rtl_op_add_interface,
1019         .remove_interface = rtl_op_remove_interface,
1020         .config = rtl_op_config,
1021         .configure_filter = rtl_op_configure_filter,
1022         .set_key = rtl_op_set_key,
1023         .conf_tx = rtl_op_conf_tx,
1024         .bss_info_changed = rtl_op_bss_info_changed,
1025         .get_tsf = rtl_op_get_tsf,
1026         .set_tsf = rtl_op_set_tsf,
1027         .reset_tsf = rtl_op_reset_tsf,
1028         .sta_notify = rtl_op_sta_notify,
1029         .ampdu_action = rtl_op_ampdu_action,
1030         .sw_scan_start = rtl_op_sw_scan_start,
1031         .sw_scan_complete = rtl_op_sw_scan_complete,
1032         .rfkill_poll = rtl_op_rfkill_poll,
1033 };