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;
  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                 rtl_watch_dog_timer_callback((unsigned long)hw);
  50         mutex_unlock(&rtlpriv->locks.conf_mutex);
  51         return err;
  52 }
  53
  54 static void rtl_op_stop(struct ieee80211_hw *hw)
  55 {
  56         struct rtl_priv *rtlpriv = rtl_priv(hw);
  57         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
  58         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
  59         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
  60
  61         if (is_hal_stop(rtlhal))
  62                 return;
  63
  64         if (unlikely(ppsc->rfpwr_state == ERFOFF)) {
  65                 rtl_ips_nic_on(hw);
  66                 mdelay(1);
  67         }
  68
  69         mutex_lock(&rtlpriv->locks.conf_mutex);
  70
  71         mac->link_state = MAC80211_NOLINK;
  72         memset(mac->bssid, 0, 6);
  73
  74         /*reset sec info */
  75         rtl_cam_reset_sec_info(hw);
  76
  77         rtl_deinit_deferred_work(hw);
  78         rtlpriv->intf_ops->adapter_stop(hw);
  79
  80         mutex_unlock(&rtlpriv->locks.conf_mutex);
  81 }
  82
  83 static void rtl_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
  84 {
  85         struct rtl_priv *rtlpriv = rtl_priv(hw);
  86         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
  87         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
  88
  89         if (unlikely(is_hal_stop(rtlhal) || ppsc->rfpwr_state != ERFON))
  90                 goto err_free;
  91
  92         if (!test_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status))
  93                 goto err_free;
  94
  95
  96         rtlpriv->intf_ops->adapter_tx(hw, skb);
  97
  98         return;
  99
 100 err_free:
 101         dev_kfree_skb_any(skb);
 102 }
 103
 104 static int rtl_op_add_interface(struct ieee80211_hw *hw,
 105                 struct ieee80211_vif *vif)
 106 {
 107         struct rtl_priv *rtlpriv = rtl_priv(hw);
 108         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 109         int err = 0;
 110
 111         if (mac->vif) {
 112                 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
 113                          ("vif has been set!! mac->vif = 0x%p\n", mac->vif));
 114                 return -EOPNOTSUPP;
 115         }
 116
 117         rtl_ips_nic_on(hw);
 118
 119         mutex_lock(&rtlpriv->locks.conf_mutex);
 120         switch (vif->type) {
 121         case NL80211_IFTYPE_STATION:
 122                 if (mac->beacon_enabled == 1) {
 123                         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 124                                  ("NL80211_IFTYPE_STATION\n"));
 125                         mac->beacon_enabled = 0;
 126                         rtlpriv->cfg->ops->update_interrupt_mask(hw, 0,
 127                                         rtlpriv->cfg->maps
 128                                         [RTL_IBSS_INT_MASKS]);
 129                 }
 130                 break;
 131         case NL80211_IFTYPE_ADHOC:
 132                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 133                          ("NL80211_IFTYPE_ADHOC\n"));
 134
 135                 mac->link_state = MAC80211_LINKED;
 136                 rtlpriv->cfg->ops->set_bcn_reg(hw);
 137                 break;
 138         case NL80211_IFTYPE_AP:
 139                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 140                          ("NL80211_IFTYPE_AP\n"));
 141                 break;
 142         default:
 143                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
 144                          ("operation mode %d is not support!\n", vif->type));
 145                 err = -EOPNOTSUPP;
 146                 goto out;
 147         }
 148
 149         mac->vif = vif;
 150         mac->opmode = vif->type;
 151         rtlpriv->cfg->ops->set_network_type(hw, vif->type);
 152         memcpy(mac->mac_addr, vif->addr, ETH_ALEN);
 153         rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_ETHER_ADDR, mac->mac_addr);
 154
 155 out:
 156         mutex_unlock(&rtlpriv->locks.conf_mutex);
 157         return err;
 158 }
 159
 160 static void rtl_op_remove_interface(struct ieee80211_hw *hw,
 161                 struct ieee80211_vif *vif)
 162 {
 163         struct rtl_priv *rtlpriv = rtl_priv(hw);
 164         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 165
 166         mutex_lock(&rtlpriv->locks.conf_mutex);
 167
 168         /* Free beacon resources */
 169         if ((mac->opmode == NL80211_IFTYPE_AP) ||
 170             (mac->opmode == NL80211_IFTYPE_ADHOC) ||
 171             (mac->opmode == NL80211_IFTYPE_MESH_POINT)) {
 172                 if (mac->beacon_enabled == 1) {
 173                         mac->beacon_enabled = 0;
 174                         rtlpriv->cfg->ops->update_interrupt_mask(hw, 0,
 175                                         rtlpriv->cfg->maps
 176                                         [RTL_IBSS_INT_MASKS]);
 177                 }
 178         }
 179
 180         /*
 181          *Note: We assume NL80211_IFTYPE_UNSPECIFIED as
 182          *NO LINK for our hardware.
 183          */
 184         mac->vif = NULL;
 185         mac->link_state = MAC80211_NOLINK;
 186         memset(mac->bssid, 0, 6);
 187         mac->opmode = NL80211_IFTYPE_UNSPECIFIED;
 188         rtlpriv->cfg->ops->set_network_type(hw, mac->opmode);
 189
 190         mutex_unlock(&rtlpriv->locks.conf_mutex);
 191 }
 192
 193
 194 static int rtl_op_config(struct ieee80211_hw *hw, u32 changed)
 195 {
 196         struct rtl_priv *rtlpriv = rtl_priv(hw);
 197         struct rtl_phy *rtlphy = &(rtlpriv->phy);
 198         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 199         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
 200         struct ieee80211_conf *conf = &hw->conf;
 201
 202         mutex_lock(&rtlpriv->locks.conf_mutex);
 203         if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) {  /*BIT(2)*/
 204                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 205                          ("IEEE80211_CONF_CHANGE_LISTEN_INTERVAL\n"));
 206         }
 207
 208         /*For IPS */
 209         if (changed & IEEE80211_CONF_CHANGE_IDLE) {
 210                 if (hw->conf.flags & IEEE80211_CONF_IDLE)
 211                         rtl_ips_nic_off(hw);
 212                 else
 213                         rtl_ips_nic_on(hw);
 214         } else {
 215                 /*
 216                  *although rfoff may not cause by ips, but we will
 217                  *check the reason in set_rf_power_state function
 218                  */
 219                 if (unlikely(ppsc->rfpwr_state == ERFOFF))
 220                         rtl_ips_nic_on(hw);
 221         }
 222
 223         /*For LPS */
 224         if (changed & IEEE80211_CONF_CHANGE_PS) {
 225                 if (conf->flags & IEEE80211_CONF_PS)
 226                         rtl_lps_enter(hw);
 227                 else
 228                         rtl_lps_leave(hw);
 229         }
 230
 231         if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) {
 232                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 233                          ("IEEE80211_CONF_CHANGE_RETRY_LIMITS %x\n",
 234                           hw->conf.long_frame_max_tx_count));
 235                 mac->retry_long = hw->conf.long_frame_max_tx_count;
 236                 mac->retry_short = hw->conf.long_frame_max_tx_count;
 237                 rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_RETRY_LIMIT,
 238                                               (u8 *) (&hw->conf.
 239                                                       long_frame_max_tx_count));
 240         }
 241
 242         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 243                 struct ieee80211_channel *channel = hw->conf.channel;
 244                 u8 wide_chan = (u8) channel->hw_value;
 245
 246                 /*
 247                  *because we should back channel to
 248                  *current_network.chan in in scanning,
 249                  *So if set_chan == current_network.chan
 250                  *we should set it.
 251                  *because mac80211 tell us wrong bw40
 252                  *info for cisco1253 bw20, so we modify
 253                  *it here based on UPPER & LOWER
 254                  */
 255                 switch (hw->conf.channel_type) {
 256                 case NL80211_CHAN_HT20:
 257                 case NL80211_CHAN_NO_HT:
 258                         /* SC */
 259                         mac->cur_40_prime_sc =
 260                             PRIME_CHNL_OFFSET_DONT_CARE;
 261                         rtlphy->current_chan_bw = HT_CHANNEL_WIDTH_20;
 262                         mac->bw_40 = false;
 263                         break;
 264                 case NL80211_CHAN_HT40MINUS:
 265                         /* SC */
 266                         mac->cur_40_prime_sc = PRIME_CHNL_OFFSET_UPPER;
 267                         rtlphy->current_chan_bw =
 268                             HT_CHANNEL_WIDTH_20_40;
 269                         mac->bw_40 = true;
 270
 271                         /*wide channel */
 272                         wide_chan -= 2;
 273
 274                         break;
 275                 case NL80211_CHAN_HT40PLUS:
 276                         /* SC */
 277                         mac->cur_40_prime_sc = PRIME_CHNL_OFFSET_LOWER;
 278                         rtlphy->current_chan_bw =
 279                             HT_CHANNEL_WIDTH_20_40;
 280                         mac->bw_40 = true;
 281
 282                         /*wide channel */
 283                         wide_chan += 2;
 284
 285                         break;
 286                 default:
 287                         mac->bw_40 = false;
 288                         RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
 289                                  ("switch case not processed\n"));
 290                         break;
 291                 }
 292
 293                 if (wide_chan <= 0)
 294                         wide_chan = 1;
 295                 rtlphy->current_channel = wide_chan;
 296
 297                 rtlpriv->cfg->ops->set_channel_access(hw);
 298                 rtlpriv->cfg->ops->switch_channel(hw);
 299                 rtlpriv->cfg->ops->set_bw_mode(hw,
 300                                                hw->conf.channel_type);
 301         }
 302
 303         mutex_unlock(&rtlpriv->locks.conf_mutex);
 304
 305         return 0;
 306 }
 307
 308 static void rtl_op_configure_filter(struct ieee80211_hw *hw,
 309                              unsigned int changed_flags,
 310                              unsigned int *new_flags, u64 multicast)
 311 {
 312         struct rtl_priv *rtlpriv = rtl_priv(hw);
 313         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 314
 315         *new_flags &= RTL_SUPPORTED_FILTERS;
 316         if (!changed_flags)
 317                 return;
 318
 319         /*TODO: we disable broadcase now, so enable here */
 320         if (changed_flags & FIF_ALLMULTI) {
 321                 if (*new_flags & FIF_ALLMULTI) {
 322                         mac->rx_conf |= rtlpriv->cfg->maps[MAC_RCR_AM] |
 323                             rtlpriv->cfg->maps[MAC_RCR_AB];
 324                         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 325                                  ("Enable receive multicast frame.\n"));
 326                 } else {
 327                         mac->rx_conf &= ~(rtlpriv->cfg->maps[MAC_RCR_AM] |
 328                                           rtlpriv->cfg->maps[MAC_RCR_AB]);
 329                         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 330                                  ("Disable receive multicast frame.\n"));
 331                 }
 332         }
 333
 334         if (changed_flags & FIF_FCSFAIL) {
 335                 if (*new_flags & FIF_FCSFAIL) {
 336                         mac->rx_conf |= rtlpriv->cfg->maps[MAC_RCR_ACRC32];
 337                         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 338                                  ("Enable receive FCS error frame.\n"));
 339                 } else {
 340                         mac->rx_conf &= ~rtlpriv->cfg->maps[MAC_RCR_ACRC32];
 341                         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 342                                  ("Disable receive FCS error frame.\n"));
 343                 }
 344         }
 345
 346         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
 347                 /*
 348                  *TODO: BIT(5) is probe response BIT(8) is beacon
 349                  *TODO: Use define for BIT(5) and BIT(8)
 350                  */
 351                 if (*new_flags & FIF_BCN_PRBRESP_PROMISC)
 352                         mac->rx_mgt_filter |= (BIT(5) | BIT(8));
 353                 else
 354                         mac->rx_mgt_filter &= ~(BIT(5) | BIT(8));
 355         }
 356
 357         if (changed_flags & FIF_CONTROL) {
 358                 if (*new_flags & FIF_CONTROL) {
 359                         mac->rx_conf |= rtlpriv->cfg->maps[MAC_RCR_ACF];
 360                         mac->rx_ctrl_filter |= RTL_SUPPORTED_CTRL_FILTER;
 361
 362                         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 363                                  ("Enable receive control frame.\n"));
 364                 } else {
 365                         mac->rx_conf &= ~rtlpriv->cfg->maps[MAC_RCR_ACF];
 366                         mac->rx_ctrl_filter &= ~RTL_SUPPORTED_CTRL_FILTER;
 367                         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 368                                  ("Disable receive control frame.\n"));
 369                 }
 370         }
 371
 372         if (changed_flags & FIF_OTHER_BSS) {
 373                 if (*new_flags & FIF_OTHER_BSS) {
 374                         mac->rx_conf |= rtlpriv->cfg->maps[MAC_RCR_AAP];
 375                         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 376                                  ("Enable receive other BSS's frame.\n"));
 377                 } else {
 378                         mac->rx_conf &= ~rtlpriv->cfg->maps[MAC_RCR_AAP];
 379                         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 380                                  ("Disable receive other BSS's frame.\n"));
 381                 }
 382         }
 383
 384         rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_RCR, (u8 *) (&mac->rx_conf));
 385         rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_MGT_FILTER,
 386                                       (u8 *) (&mac->rx_mgt_filter));
 387         rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_CTRL_FILTER,
 388                                       (u8 *) (&mac->rx_ctrl_filter));
 389 }
 390
 391 static int _rtl_get_hal_qnum(u16 queue)
 392 {
 393         int qnum;
 394
 395         switch (queue) {
 396         case 0:
 397                 qnum = AC3_VO;
 398                 break;
 399         case 1:
 400                 qnum = AC2_VI;
 401                 break;
 402         case 2:
 403                 qnum = AC0_BE;
 404                 break;
 405         case 3:
 406                 qnum = AC1_BK;
 407                 break;
 408         default:
 409                 qnum = AC0_BE;
 410                 break;
 411         }
 412         return qnum;
 413 }
 414
 415 /*
 416  *for mac80211 VO=0, VI=1, BE=2, BK=3
 417  *for rtl819x  BE=0, BK=1, VI=2, VO=3
 418  */
 419 static int rtl_op_conf_tx(struct ieee80211_hw *hw, u16 queue,
 420                    const struct ieee80211_tx_queue_params *param)
 421 {
 422         struct rtl_priv *rtlpriv = rtl_priv(hw);
 423         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 424         int aci;
 425
 426         if (queue >= AC_MAX) {
 427                 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
 428                          ("queue number %d is incorrect!\n", queue));
 429                 return -EINVAL;
 430         }
 431
 432         aci = _rtl_get_hal_qnum(queue);
 433         mac->ac[aci].aifs = param->aifs;
 434         mac->ac[aci].cw_min = cpu_to_le16(param->cw_min);
 435         mac->ac[aci].cw_max = cpu_to_le16(param->cw_max);
 436         mac->ac[aci].tx_op = cpu_to_le16(param->txop);
 437         memcpy(&mac->edca_param[aci], param, sizeof(*param));
 438         rtlpriv->cfg->ops->set_qos(hw, aci);
 439         return 0;
 440 }
 441
 442 static void rtl_op_bss_info_changed(struct ieee80211_hw *hw,
 443                              struct ieee80211_vif *vif,
 444                              struct ieee80211_bss_conf *bss_conf, u32 changed)
 445 {
 446         struct rtl_priv *rtlpriv = rtl_priv(hw);
 447         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 448         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
 449
 450         mutex_lock(&rtlpriv->locks.conf_mutex);
 451
 452         if ((vif->type == NL80211_IFTYPE_ADHOC) ||
 453             (vif->type == NL80211_IFTYPE_AP) ||
 454             (vif->type == NL80211_IFTYPE_MESH_POINT)) {
 455
 456                 if ((changed & BSS_CHANGED_BEACON) ||
 457                     (changed & BSS_CHANGED_BEACON_ENABLED &&
 458                      bss_conf->enable_beacon)) {
 459
 460                         if (mac->beacon_enabled == 0) {
 461                                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_DMESG,
 462                                          ("BSS_CHANGED_BEACON_ENABLED\n"));
 463
 464                                 /*start hw beacon interrupt. */
 465                                 /*rtlpriv->cfg->ops->set_bcn_reg(hw); */
 466                                 mac->beacon_enabled = 1;
 467                                 rtlpriv->cfg->ops->update_interrupt_mask(hw,
 468                                                 rtlpriv->cfg->maps
 469                                                 [RTL_IBSS_INT_MASKS],
 470                                                 0);
 471                         }
 472                 } else {
 473                         if (mac->beacon_enabled == 1) {
 474                                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_DMESG,
 475                                          ("ADHOC DISABLE BEACON\n"));
 476
 477                                 mac->beacon_enabled = 0;
 478                                 rtlpriv->cfg->ops->update_interrupt_mask(hw, 0,
 479                                                 rtlpriv->cfg->maps
 480                                                 [RTL_IBSS_INT_MASKS]);
 481                         }
 482                 }
 483
 484                 if (changed & BSS_CHANGED_BEACON_INT) {
 485                         RT_TRACE(rtlpriv, COMP_BEACON, DBG_TRACE,
 486                                  ("BSS_CHANGED_BEACON_INT\n"));
 487                         mac->beacon_interval = bss_conf->beacon_int;
 488                         rtlpriv->cfg->ops->set_bcn_intv(hw);
 489                 }
 490         }
 491
 492         /*TODO: reference to enum ieee80211_bss_change */
 493         if (changed & BSS_CHANGED_ASSOC) {
 494                 if (bss_conf->assoc) {
 495                         mac->link_state = MAC80211_LINKED;
 496                         mac->cnt_after_linked = 0;
 497                         mac->assoc_id = bss_conf->aid;
 498                         memcpy(mac->bssid, bss_conf->bssid, 6);
 499
 500                         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_DMESG,
 501                                  ("BSS_CHANGED_ASSOC\n"));
 502                 } else {
 503                         if (mac->link_state == MAC80211_LINKED)
 504                                 rtl_lps_leave(hw);
 505
 506                         mac->link_state = MAC80211_NOLINK;
 507                         memset(mac->bssid, 0, 6);
 508
 509                         /* reset sec info */
 510                         rtl_cam_reset_sec_info(hw);
 511
 512                         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_DMESG,
 513                                  ("BSS_CHANGED_UN_ASSOC\n"));
 514                 }
 515         }
 516
 517         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
 518                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE,
 519                          ("BSS_CHANGED_ERP_CTS_PROT\n"));
 520                 mac->use_cts_protect = bss_conf->use_cts_prot;
 521         }
 522
 523         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
 524                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
 525                          ("BSS_CHANGED_ERP_PREAMBLE use short preamble:%x\n",
 526                           bss_conf->use_short_preamble));
 527
 528                 mac->short_preamble = bss_conf->use_short_preamble;
 529                 rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_ACK_PREAMBLE,
 530                                               (u8 *) (&mac->short_preamble));
 531         }
 532
 533         if (changed & BSS_CHANGED_ERP_SLOT) {
 534                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE,
 535                          ("BSS_CHANGED_ERP_SLOT\n"));
 536
 537                 if (bss_conf->use_short_slot)
 538                         mac->slot_time = RTL_SLOT_TIME_9;
 539                 else
 540                         mac->slot_time = RTL_SLOT_TIME_20;
 541
 542                 rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_SLOT_TIME,
 543                                               (u8 *) (&mac->slot_time));
 544         }
 545
 546         if (changed & BSS_CHANGED_HT) {
 547                 struct ieee80211_sta *sta = NULL;
 548
 549                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE,
 550                          ("BSS_CHANGED_HT\n"));
 551
 552                 rcu_read_lock();
 553                 sta = ieee80211_find_sta(mac->vif, mac->bssid);
 554
 555                 if (sta) {
 556                         if (sta->ht_cap.ampdu_density >
 557                             mac->current_ampdu_density)
 558                                 mac->current_ampdu_density =
 559                                     sta->ht_cap.ampdu_density;
 560                         if (sta->ht_cap.ampdu_factor <
 561                             mac->current_ampdu_factor)
 562                                 mac->current_ampdu_factor =
 563                                     sta->ht_cap.ampdu_factor;
 564                 }
 565                 rcu_read_unlock();
 566
 567                 rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_SHORTGI_DENSITY,
 568                                               (u8 *) (&mac->max_mss_density));
 569                 rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_AMPDU_FACTOR,
 570                                               &mac->current_ampdu_factor);
 571                 rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_AMPDU_MIN_SPACE,
 572                                               &mac->current_ampdu_density);
 573         }
 574
 575         if (changed & BSS_CHANGED_BSSID) {
 576                 struct ieee80211_sta *sta = NULL;
 577                 u32 basic_rates;
 578                 u8 i;
 579
 580                 rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_BSSID,
 581                                               (u8 *) bss_conf->bssid);
 582
 583                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_DMESG,
 584                          (MAC_FMT "\n", MAC_ARG(bss_conf->bssid)));
 585
 586                 memcpy(mac->bssid, bss_conf->bssid, 6);
 587                 if (is_valid_ether_addr(bss_conf->bssid)) {
 588                         switch (vif->type) {
 589                         case NL80211_IFTYPE_UNSPECIFIED:
 590                                 break;
 591                         case NL80211_IFTYPE_ADHOC:
 592                                 break;
 593                         case NL80211_IFTYPE_STATION:
 594                                 break;
 595                         case NL80211_IFTYPE_AP:
 596                                 break;
 597                         default:
 598                                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
 599                                          ("switch case not process\n"));
 600                                 break;
 601                         }
 602                         rtlpriv->cfg->ops->set_network_type(hw, vif->type);
 603                 } else
 604                         rtlpriv->cfg->ops->set_network_type(hw,
 605                                         NL80211_IFTYPE_UNSPECIFIED);
 606
 607                 memset(mac->mcs, 0, 16);
 608                 mac->ht_enable = false;
 609                 mac->sgi_40 = false;
 610                 mac->sgi_20 = false;
 611
 612                 if (!bss_conf->use_short_slot)
 613                         mac->mode = WIRELESS_MODE_B;
 614                 else
 615                         mac->mode = WIRELESS_MODE_G;
 616
 617                 rcu_read_lock();
 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                 rcu_read_unlock();
 653
 654                 /*mac80211 just give us CCK rates any time
 655                  *So we add G rate in basic rates when
 656                  not in B mode*/
 657                 if (changed & BSS_CHANGED_BASIC_RATES) {
 658                         if (mac->mode == WIRELESS_MODE_B)
 659                                 basic_rates = bss_conf->basic_rates | 0x00f;
 660                         else
 661                                 basic_rates = bss_conf->basic_rates | 0xff0;
 662
 663                         if (!vif)
 664                                 goto out;
 665
 666                         mac->basic_rates = basic_rates;
 667                         rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_BASIC_RATE,
 668                                         (u8 *) (&basic_rates));
 669
 670                         if (rtlpriv->dm.useramask)
 671                                 rtlpriv->cfg->ops->update_rate_mask(hw, 0);
 672                         else
 673                                 rtlpriv->cfg->ops->update_rate_table(hw);
 674
 675                 }
 676         }
 677
 678         /*
 679          * For FW LPS:
 680          * To tell firmware we have connected
 681          * to an AP. For 92SE/CE power save v2.
 682          */
 683         if (changed & BSS_CHANGED_ASSOC) {
 684                 if (bss_conf->assoc) {
 685                         if (ppsc->fwctrl_lps) {
 686                                 u8 mstatus = RT_MEDIA_CONNECT;
 687                                 rtlpriv->cfg->ops->set_hw_reg(hw,
 688                                                       HW_VAR_H2C_FW_JOINBSSRPT,
 689                                                       (u8 *) (&mstatus));
 690                                 ppsc->report_linked = true;
 691                         }
 692                 } else {
 693                         if (ppsc->fwctrl_lps) {
 694                                 u8 mstatus = RT_MEDIA_DISCONNECT;
 695                                 rtlpriv->cfg->ops->set_hw_reg(hw,
 696                                                       HW_VAR_H2C_FW_JOINBSSRPT,
 697                                                       (u8 *)(&mstatus));
 698                                 ppsc->report_linked = false;
 699                         }
 700                 }
 701         }
 702
 703 out:
 704         mutex_unlock(&rtlpriv->locks.conf_mutex);
 705 }
 706
 707 static u64 rtl_op_get_tsf(struct ieee80211_hw *hw)
 708 {
 709         struct rtl_priv *rtlpriv = rtl_priv(hw);
 710         u64 tsf;
 711
 712         rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_CORRECT_TSF, (u8 *) (&tsf));
 713         return tsf;
 714 }
 715
 716 static void rtl_op_set_tsf(struct ieee80211_hw *hw, u64 tsf)
 717 {
 718         struct rtl_priv *rtlpriv = rtl_priv(hw);
 719         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 720         u8 bibss = (mac->opmode == NL80211_IFTYPE_ADHOC) ? 1 : 0;;
 721
 722         mac->tsf = tsf;
 723         rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_CORRECT_TSF, (u8 *) (&bibss));
 724 }
 725
 726 static void rtl_op_reset_tsf(struct ieee80211_hw *hw)
 727 {
 728         struct rtl_priv *rtlpriv = rtl_priv(hw);
 729         u8 tmp = 0;
 730
 731         rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_DUAL_TSF_RST, (u8 *) (&tmp));
 732 }
 733
 734 static void rtl_op_sta_notify(struct ieee80211_hw *hw,
 735                               struct ieee80211_vif *vif,
 736                               enum sta_notify_cmd cmd,
 737                               struct ieee80211_sta *sta)
 738 {
 739         switch (cmd) {
 740         case STA_NOTIFY_SLEEP:
 741                 break;
 742         case STA_NOTIFY_AWAKE:
 743                 break;
 744         default:
 745                 break;
 746         }
 747 }
 748
 749 static int rtl_op_ampdu_action(struct ieee80211_hw *hw,
 750                                struct ieee80211_vif *vif,
 751                                enum ieee80211_ampdu_mlme_action action,
 752                                struct ieee80211_sta *sta, u16 tid, u16 *ssn,
 753                                u8 buf_size)
 754 {
 755         struct rtl_priv *rtlpriv = rtl_priv(hw);
 756
 757         switch (action) {
 758         case IEEE80211_AMPDU_TX_START:
 759                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE,
 760                          ("IEEE80211_AMPDU_TX_START: TID:%d\n", tid));
 761                 return rtl_tx_agg_start(hw, sta->addr, tid, ssn);
 762                 break;
 763         case IEEE80211_AMPDU_TX_STOP:
 764                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE,
 765                          ("IEEE80211_AMPDU_TX_STOP: TID:%d\n", tid));
 766                 return rtl_tx_agg_stop(hw, sta->addr, tid);
 767                 break;
 768         case IEEE80211_AMPDU_TX_OPERATIONAL:
 769                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE,
 770                          ("IEEE80211_AMPDU_TX_OPERATIONAL:TID:%d\n", tid));
 771                 break;
 772         case IEEE80211_AMPDU_RX_START:
 773                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE,
 774                          ("IEEE80211_AMPDU_RX_START:TID:%d\n", tid));
 775                 break;
 776         case IEEE80211_AMPDU_RX_STOP:
 777                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE,
 778                          ("IEEE80211_AMPDU_RX_STOP:TID:%d\n", tid));
 779                 break;
 780         default:
 781                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
 782                          ("IEEE80211_AMPDU_ERR!!!!:\n"));
 783                 return -EOPNOTSUPP;
 784         }
 785         return 0;
 786 }
 787
 788 static void rtl_op_sw_scan_start(struct ieee80211_hw *hw)
 789 {
 790         struct rtl_priv *rtlpriv = rtl_priv(hw);
 791         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 792
 793         mac->act_scanning = true;
 794
 795         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, ("\n"));
 796
 797         if (mac->link_state == MAC80211_LINKED) {
 798                 rtl_lps_leave(hw);
 799                 mac->link_state = MAC80211_LINKED_SCANNING;
 800         } else
 801                 rtl_ips_nic_on(hw);
 802
 803         rtlpriv->cfg->ops->led_control(hw, LED_CTL_SITE_SURVEY);
 804         rtlpriv->cfg->ops->scan_operation_backup(hw, SCAN_OPT_BACKUP);
 805 }
 806
 807 static void rtl_op_sw_scan_complete(struct ieee80211_hw *hw)
 808 {
 809         struct rtl_priv *rtlpriv = rtl_priv(hw);
 810         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 811
 812         RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, ("\n"));
 813
 814         rtlpriv->cfg->ops->scan_operation_backup(hw, SCAN_OPT_RESTORE);
 815         mac->act_scanning = false;
 816         if (mac->link_state == MAC80211_LINKED_SCANNING) {
 817                 mac->link_state = MAC80211_LINKED;
 818
 819                 /* fix fwlps issue */
 820                 rtlpriv->cfg->ops->set_network_type(hw, mac->opmode);
 821
 822                 if (rtlpriv->dm.useramask)
 823                         rtlpriv->cfg->ops->update_rate_mask(hw, 0);
 824                 else
 825                         rtlpriv->cfg->ops->update_rate_table(hw);
 826
 827         }
 828
 829 }
 830
 831 static int rtl_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 832                           struct ieee80211_vif *vif, struct ieee80211_sta *sta,
 833                           struct ieee80211_key_conf *key)
 834 {
 835         struct rtl_priv *rtlpriv = rtl_priv(hw);
 836         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 837         u8 key_type = NO_ENCRYPTION;
 838         u8 key_idx;
 839         bool group_key = false;
 840         bool wep_only = false;
 841         int err = 0;
 842         u8 mac_addr[ETH_ALEN];
 843         u8 bcast_addr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 844         u8 zero_addr[ETH_ALEN] = { 0 };
 845
 846         if (rtlpriv->cfg->mod_params->sw_crypto || rtlpriv->sec.use_sw_sec) {
 847                 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
 848                          ("not open hw encryption\n"));
 849                 return -ENOSPC; /*User disabled HW-crypto */
 850         }
 851         RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
 852                  ("%s hardware based encryption for keyidx: %d, mac: %pM\n",
 853                   cmd == SET_KEY ? "Using" : "Disabling", key->keyidx,
 854                   sta ? sta->addr : bcast_addr));
 855         rtlpriv->sec.being_setkey = true;
 856         rtl_ips_nic_on(hw);
 857         mutex_lock(&rtlpriv->locks.conf_mutex);
 858         /* <1> get encryption alg */
 859         switch (key->cipher) {
 860         case WLAN_CIPHER_SUITE_WEP40:
 861                 key_type = WEP40_ENCRYPTION;
 862                 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, ("alg:WEP40\n"));
 863                 rtlpriv->sec.use_defaultkey = true;
 864                 break;
 865         case WLAN_CIPHER_SUITE_WEP104:
 866                 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
 867                          ("alg:WEP104\n"));
 868                 key_type = WEP104_ENCRYPTION;
 869                 rtlpriv->sec.use_defaultkey = true;
 870                 break;
 871         case WLAN_CIPHER_SUITE_TKIP:
 872                 key_type = TKIP_ENCRYPTION;
 873                 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, ("alg:TKIP\n"));
 874                 if (mac->opmode == NL80211_IFTYPE_ADHOC)
 875                         rtlpriv->sec.use_defaultkey = true;
 876                 break;
 877         case WLAN_CIPHER_SUITE_CCMP:
 878                 key_type = AESCCMP_ENCRYPTION;
 879                 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, ("alg:CCMP\n"));
 880                 if (mac->opmode == NL80211_IFTYPE_ADHOC)
 881                         rtlpriv->sec.use_defaultkey = true;
 882                 break;
 883         default:
 884                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
 885                          ("alg_err:%x!!!!:\n", key->cipher));
 886                 goto out_unlock;
 887         }
 888         /* <2> get key_idx */
 889         key_idx = (u8) (key->keyidx);
 890         if (key_idx > 3)
 891                 goto out_unlock;
 892         /* <3> if pairwise key enable_hw_sec */
 893         group_key = !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE);
 894         if ((!group_key) || (mac->opmode == NL80211_IFTYPE_ADHOC) ||
 895             rtlpriv->sec.pairwise_enc_algorithm == NO_ENCRYPTION) {
 896                 if (rtlpriv->sec.pairwise_enc_algorithm == NO_ENCRYPTION &&
 897                     (key_type == WEP40_ENCRYPTION ||
 898                      key_type == WEP104_ENCRYPTION))
 899                         wep_only = true;
 900                 rtlpriv->sec.pairwise_enc_algorithm = key_type;
 901                 rtlpriv->cfg->ops->enable_hw_sec(hw);
 902         }
 903         /* <4> set key based on cmd */
 904         switch (cmd) {
 905         case SET_KEY:
 906                 if (wep_only) {
 907                         RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
 908                                  ("set WEP(group/pairwise) key\n"));
 909                         /* Pairwise key with an assigned MAC address. */
 910                         rtlpriv->sec.pairwise_enc_algorithm = key_type;
 911                         rtlpriv->sec.group_enc_algorithm = key_type;
 912                         /*set local buf about wep key. */
 913                         memcpy(rtlpriv->sec.key_buf[key_idx],
 914                                key->key, key->keylen);
 915                         rtlpriv->sec.key_len[key_idx] = key->keylen;
 916                         memcpy(mac_addr, zero_addr, ETH_ALEN);
 917                 } else if (group_key) { /* group key */
 918                         RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
 919                                  ("set group key\n"));
 920                         /* group key */
 921                         rtlpriv->sec.group_enc_algorithm = key_type;
 922                         /*set local buf about group key. */
 923                         memcpy(rtlpriv->sec.key_buf[key_idx],
 924                                key->key, key->keylen);
 925                         rtlpriv->sec.key_len[key_idx] = key->keylen;
 926                         memcpy(mac_addr, bcast_addr, ETH_ALEN);
 927                 } else {        /* pairwise key */
 928                         RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
 929                                  ("set pairwise key\n"));
 930                         if (!sta) {
 931                                 RT_ASSERT(false, ("pairwise key withnot"
 932                                                   "mac_addr\n"));
 933                                 err = -EOPNOTSUPP;
 934                                 goto out_unlock;
 935                         }
 936                         /* Pairwise key with an assigned MAC address. */
 937                         rtlpriv->sec.pairwise_enc_algorithm = key_type;
 938                         /*set local buf about pairwise key. */
 939                         memcpy(rtlpriv->sec.key_buf[PAIRWISE_KEYIDX],
 940                                key->key, key->keylen);
 941                         rtlpriv->sec.key_len[PAIRWISE_KEYIDX] = key->keylen;
 942                         rtlpriv->sec.pairwise_key =
 943                             rtlpriv->sec.key_buf[PAIRWISE_KEYIDX];
 944                         memcpy(mac_addr, sta->addr, ETH_ALEN);
 945                 }
 946                 rtlpriv->cfg->ops->set_key(hw, key_idx, mac_addr,
 947                                            group_key, key_type, wep_only,
 948                                            false);
 949                 /* <5> tell mac80211 do something: */
 950                 /*must use sw generate IV, or can not work !!!!. */
 951                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
 952                 key->hw_key_idx = key_idx;
 953                 if (key_type == TKIP_ENCRYPTION)
 954                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
 955                 break;
 956         case DISABLE_KEY:
 957                 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
 958                          ("disable key delete one entry\n"));
 959                 /*set local buf about wep key. */
 960                 memset(rtlpriv->sec.key_buf[key_idx], 0, key->keylen);
 961                 rtlpriv->sec.key_len[key_idx] = 0;
 962                 memcpy(mac_addr, zero_addr, ETH_ALEN);
 963                 /*
 964                  *mac80211 will delete entrys one by one,
 965                  *so don't use rtl_cam_reset_all_entry
 966                  *or clear all entry here.
 967                  */
 968                 rtl_cam_delete_one_entry(hw, mac_addr, key_idx);
 969                 break;
 970         default:
 971                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
 972                          ("cmd_err:%x!!!!:\n", cmd));
 973         }
 974 out_unlock:
 975         mutex_unlock(&rtlpriv->locks.conf_mutex);
 976         rtlpriv->sec.being_setkey = false;
 977         return err;
 978 }
 979
 980 static void rtl_op_rfkill_poll(struct ieee80211_hw *hw)
 981 {
 982         struct rtl_priv *rtlpriv = rtl_priv(hw);
 983
 984         bool radio_state;
 985         bool blocked;
 986         u8 valid = 0;
 987
 988         if (!test_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status))
 989                 return;
 990
 991         mutex_lock(&rtlpriv->locks.conf_mutex);
 992
 993         /*if Radio On return true here */
 994         radio_state = rtlpriv->cfg->ops->radio_onoff_checking(hw, &valid);
 995
 996         if (valid) {
 997                 if (unlikely(radio_state != rtlpriv->rfkill.rfkill_state)) {
 998                         rtlpriv->rfkill.rfkill_state = radio_state;
 999
1000                         RT_TRACE(rtlpriv, COMP_RF, DBG_DMESG,
1001                                  (KERN_INFO "wireless radio switch turned %s\n",
1002                                   radio_state ? "on" : "off"));
1003
1004                         blocked = (rtlpriv->rfkill.rfkill_state == 1) ? 0 : 1;
1005                         wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
1006                 }
1007         }
1008
1009         mutex_unlock(&rtlpriv->locks.conf_mutex);
1010 }
1011
1012 const struct ieee80211_ops rtl_ops = {
1013         .start = rtl_op_start,
1014         .stop = rtl_op_stop,
1015         .tx = rtl_op_tx,
1016         .add_interface = rtl_op_add_interface,
1017         .remove_interface = rtl_op_remove_interface,
1018         .config = rtl_op_config,
1019         .configure_filter = rtl_op_configure_filter,
1020         .set_key = rtl_op_set_key,
1021         .conf_tx = rtl_op_conf_tx,
1022         .bss_info_changed = rtl_op_bss_info_changed,
1023         .get_tsf = rtl_op_get_tsf,
1024         .set_tsf = rtl_op_set_tsf,
1025         .reset_tsf = rtl_op_reset_tsf,
1026         .sta_notify = rtl_op_sta_notify,
1027         .ampdu_action = rtl_op_ampdu_action,
1028         .sw_scan_start = rtl_op_sw_scan_start,
1029         .sw_scan_complete = rtl_op_sw_scan_complete,
1030         .rfkill_poll = rtl_op_rfkill_poll,
1031 };