linux/drivers/net/wireless/rtlwifi/core.c
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   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. */
  36static 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);
  51out:
  52        mutex_unlock(&rtlpriv->locks.conf_mutex);
  53        return err;
  54}
  55
  56static 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
  85static 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
 102err_free:
 103        dev_kfree_skb_any(skb);
 104}
 105
 106static 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
 157out:
 158        mutex_unlock(&rtlpriv->locks.conf_mutex);
 159        return err;
 160}
 161
 162static 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
 196static 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
 310static 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
 393static 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 */
 421static 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
 444static 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
 705out:
 706        mutex_unlock(&rtlpriv->locks.conf_mutex);
 707}
 708
 709static 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
 718static 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
 728static 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
 736static 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
 751static 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
 790static 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
 809static 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
 833static 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        }
 976out_unlock:
 977        mutex_unlock(&rtlpriv->locks.conf_mutex);
 978        rtlpriv->sec.being_setkey = false;
 979        return err;
 980}
 981
 982static 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
1014const 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};
1034