Pileus Git - ~andy/linux/blob - drivers/net/wireless/iwlwifi/mvm/power.c

   1 /******************************************************************************
   2  *
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   4  * redistributing this file, you may do so under either license.
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   6  * GPL LICENSE SUMMARY
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  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of version 2 of the GNU General Public License as
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  44  *    the documentation and/or other materials provided with the
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  48  *    from this software without specific prior written permission.
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  51  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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  53  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  54  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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  60  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  61  *
  62  *****************************************************************************/
  63
  64 #include <linux/kernel.h>
  65 #include <linux/module.h>
  66 #include <linux/slab.h>
  67
  68 #include <net/mac80211.h>
  69
  70 #include "iwl-debug.h"
  71 #include "mvm.h"
  72 #include "iwl-modparams.h"
  73 #include "fw-api-power.h"
  74
  75 #define POWER_KEEP_ALIVE_PERIOD_SEC    25
  76
  77 int iwl_mvm_beacon_filter_send_cmd(struct iwl_mvm *mvm,
  78                                    struct iwl_beacon_filter_cmd *cmd)
  79 {
  80         int ret;
  81
  82         ret = iwl_mvm_send_cmd_pdu(mvm, REPLY_BEACON_FILTERING_CMD, CMD_SYNC,
  83                                    sizeof(struct iwl_beacon_filter_cmd), cmd);
  84
  85         if (!ret) {
  86                 IWL_DEBUG_POWER(mvm, "ba_enable_beacon_abort is: %d\n",
  87                                 le32_to_cpu(cmd->ba_enable_beacon_abort));
  88                 IWL_DEBUG_POWER(mvm, "ba_escape_timer is: %d\n",
  89                                 le32_to_cpu(cmd->ba_escape_timer));
  90                 IWL_DEBUG_POWER(mvm, "bf_debug_flag is: %d\n",
  91                                 le32_to_cpu(cmd->bf_debug_flag));
  92                 IWL_DEBUG_POWER(mvm, "bf_enable_beacon_filter is: %d\n",
  93                                 le32_to_cpu(cmd->bf_enable_beacon_filter));
  94                 IWL_DEBUG_POWER(mvm, "bf_energy_delta is: %d\n",
  95                                 le32_to_cpu(cmd->bf_energy_delta));
  96                 IWL_DEBUG_POWER(mvm, "bf_escape_timer is: %d\n",
  97                                 le32_to_cpu(cmd->bf_escape_timer));
  98                 IWL_DEBUG_POWER(mvm, "bf_roaming_energy_delta is: %d\n",
  99                                 le32_to_cpu(cmd->bf_roaming_energy_delta));
 100                 IWL_DEBUG_POWER(mvm, "bf_roaming_state is: %d\n",
 101                                 le32_to_cpu(cmd->bf_roaming_state));
 102                 IWL_DEBUG_POWER(mvm, "bf_temp_threshold is: %d\n",
 103                                 le32_to_cpu(cmd->bf_temp_threshold));
 104                 IWL_DEBUG_POWER(mvm, "bf_temp_fast_filter is: %d\n",
 105                                 le32_to_cpu(cmd->bf_temp_fast_filter));
 106                 IWL_DEBUG_POWER(mvm, "bf_temp_slow_filter is: %d\n",
 107                                 le32_to_cpu(cmd->bf_temp_slow_filter));
 108         }
 109         return ret;
 110 }
 111
 112 static
 113 void iwl_mvm_beacon_filter_set_cqm_params(struct iwl_mvm *mvm,
 114                                           struct ieee80211_vif *vif,
 115                                           struct iwl_beacon_filter_cmd *cmd)
 116 {
 117         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 118
 119         if (vif->bss_conf.cqm_rssi_thold) {
 120                 cmd->bf_energy_delta =
 121                         cpu_to_le32(vif->bss_conf.cqm_rssi_hyst);
 122                 /* fw uses an absolute value for this */
 123                 cmd->bf_roaming_state =
 124                         cpu_to_le32(-vif->bss_conf.cqm_rssi_thold);
 125         }
 126         cmd->ba_enable_beacon_abort = cpu_to_le32(mvmvif->bf_data.ba_enabled);
 127 }
 128
 129 int iwl_mvm_update_beacon_abort(struct iwl_mvm *mvm,
 130                                 struct ieee80211_vif *vif, bool enable)
 131 {
 132         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 133         struct iwl_beacon_filter_cmd cmd = {
 134                 IWL_BF_CMD_CONFIG_DEFAULTS,
 135                 .bf_enable_beacon_filter = cpu_to_le32(1),
 136                 .ba_enable_beacon_abort = cpu_to_le32(enable),
 137         };
 138
 139         if (!mvmvif->bf_data.bf_enabled)
 140                 return 0;
 141
 142         if (mvm->cur_ucode == IWL_UCODE_WOWLAN)
 143                 cmd.ba_escape_timer = cpu_to_le32(IWL_BA_ESCAPE_TIMER_D3);
 144
 145         mvmvif->bf_data.ba_enabled = enable;
 146         iwl_mvm_beacon_filter_set_cqm_params(mvm, vif, &cmd);
 147         iwl_mvm_beacon_filter_debugfs_parameters(vif, &cmd);
 148         return iwl_mvm_beacon_filter_send_cmd(mvm, &cmd);
 149 }
 150
 151 static void iwl_mvm_power_log(struct iwl_mvm *mvm,
 152                               struct iwl_mac_power_cmd *cmd)
 153 {
 154         IWL_DEBUG_POWER(mvm,
 155                         "Sending power table command on mac id 0x%X for power level %d, flags = 0x%X\n",
 156                         cmd->id_and_color, iwlmvm_mod_params.power_scheme,
 157                         le16_to_cpu(cmd->flags));
 158         IWL_DEBUG_POWER(mvm, "Keep alive = %u sec\n",
 159                         le16_to_cpu(cmd->keep_alive_seconds));
 160
 161         if (!(cmd->flags & cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK))) {
 162                 IWL_DEBUG_POWER(mvm, "Disable power management\n");
 163                 return;
 164         }
 165
 166         IWL_DEBUG_POWER(mvm, "Rx timeout = %u usec\n",
 167                         le32_to_cpu(cmd->rx_data_timeout));
 168         IWL_DEBUG_POWER(mvm, "Tx timeout = %u usec\n",
 169                         le32_to_cpu(cmd->tx_data_timeout));
 170         if (cmd->flags & cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK))
 171                 IWL_DEBUG_POWER(mvm, "DTIM periods to skip = %u\n",
 172                                 cmd->skip_dtim_periods);
 173         if (cmd->flags & cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK))
 174                 IWL_DEBUG_POWER(mvm, "LP RX RSSI threshold = %u\n",
 175                                 cmd->lprx_rssi_threshold);
 176         if (cmd->flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK)) {
 177                 IWL_DEBUG_POWER(mvm, "uAPSD enabled\n");
 178                 IWL_DEBUG_POWER(mvm, "Rx timeout (uAPSD) = %u usec\n",
 179                                 le32_to_cpu(cmd->rx_data_timeout_uapsd));
 180                 IWL_DEBUG_POWER(mvm, "Tx timeout (uAPSD) = %u usec\n",
 181                                 le32_to_cpu(cmd->tx_data_timeout_uapsd));
 182                 IWL_DEBUG_POWER(mvm, "QNDP TID = %d\n", cmd->qndp_tid);
 183                 IWL_DEBUG_POWER(mvm, "ACs flags = 0x%x\n", cmd->uapsd_ac_flags);
 184                 IWL_DEBUG_POWER(mvm, "Max SP = %d\n", cmd->uapsd_max_sp);
 185         }
 186 }
 187
 188 static void iwl_mvm_power_configure_uapsd(struct iwl_mvm *mvm,
 189                                           struct ieee80211_vif *vif,
 190                                           struct iwl_mac_power_cmd *cmd)
 191 {
 192         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 193         enum ieee80211_ac_numbers ac;
 194         bool tid_found = false;
 195
 196         for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_BK; ac++) {
 197                 if (!mvmvif->queue_params[ac].uapsd)
 198                         continue;
 199
 200                 if (mvm->cur_ucode != IWL_UCODE_WOWLAN)
 201                         cmd->flags |=
 202                                 cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK);
 203
 204                 cmd->uapsd_ac_flags |= BIT(ac);
 205
 206                 /* QNDP TID - the highest TID with no admission control */
 207                 if (!tid_found && !mvmvif->queue_params[ac].acm) {
 208                         tid_found = true;
 209                         switch (ac) {
 210                         case IEEE80211_AC_VO:
 211                                 cmd->qndp_tid = 6;
 212                                 break;
 213                         case IEEE80211_AC_VI:
 214                                 cmd->qndp_tid = 5;
 215                                 break;
 216                         case IEEE80211_AC_BE:
 217                                 cmd->qndp_tid = 0;
 218                                 break;
 219                         case IEEE80211_AC_BK:
 220                                 cmd->qndp_tid = 1;
 221                                 break;
 222                         }
 223                 }
 224         }
 225
 226         if (!(cmd->flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK)))
 227                 return;
 228
 229         cmd->flags |= cpu_to_le16(POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK);
 230
 231         if (cmd->uapsd_ac_flags == (BIT(IEEE80211_AC_VO) |
 232                                     BIT(IEEE80211_AC_VI) |
 233                                     BIT(IEEE80211_AC_BE) |
 234                                     BIT(IEEE80211_AC_BK))) {
 235                 cmd->flags |= cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK);
 236                 cmd->snooze_interval = cpu_to_le16(IWL_MVM_PS_SNOOZE_INTERVAL);
 237                 cmd->snooze_window = (mvm->cur_ucode == IWL_UCODE_WOWLAN) ?
 238                         cpu_to_le16(IWL_MVM_WOWLAN_PS_SNOOZE_WINDOW) :
 239                         cpu_to_le16(IWL_MVM_PS_SNOOZE_WINDOW);
 240         }
 241
 242         cmd->uapsd_max_sp = IWL_UAPSD_MAX_SP;
 243
 244         if (mvm->cur_ucode == IWL_UCODE_WOWLAN || cmd->flags &
 245             cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK)) {
 246                 cmd->rx_data_timeout_uapsd =
 247                         cpu_to_le32(IWL_MVM_WOWLAN_PS_RX_DATA_TIMEOUT);
 248                 cmd->tx_data_timeout_uapsd =
 249                         cpu_to_le32(IWL_MVM_WOWLAN_PS_TX_DATA_TIMEOUT);
 250         } else {
 251                 cmd->rx_data_timeout_uapsd =
 252                         cpu_to_le32(IWL_MVM_UAPSD_RX_DATA_TIMEOUT);
 253                 cmd->tx_data_timeout_uapsd =
 254                         cpu_to_le32(IWL_MVM_UAPSD_TX_DATA_TIMEOUT);
 255         }
 256
 257         if (cmd->flags & cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK)) {
 258                 cmd->heavy_tx_thld_packets =
 259                         IWL_MVM_PS_SNOOZE_HEAVY_TX_THLD_PACKETS;
 260                 cmd->heavy_rx_thld_packets =
 261                         IWL_MVM_PS_SNOOZE_HEAVY_RX_THLD_PACKETS;
 262         } else {
 263                 cmd->heavy_tx_thld_packets =
 264                         IWL_MVM_PS_HEAVY_TX_THLD_PACKETS;
 265                 cmd->heavy_rx_thld_packets =
 266                         IWL_MVM_PS_HEAVY_RX_THLD_PACKETS;
 267         }
 268         cmd->heavy_tx_thld_percentage =
 269                 IWL_MVM_PS_HEAVY_TX_THLD_PERCENT;
 270         cmd->heavy_rx_thld_percentage =
 271                 IWL_MVM_PS_HEAVY_RX_THLD_PERCENT;
 272 }
 273
 274 static void iwl_mvm_power_build_cmd(struct iwl_mvm *mvm,
 275                                     struct ieee80211_vif *vif,
 276                                     struct iwl_mac_power_cmd *cmd)
 277 {
 278         struct ieee80211_hw *hw = mvm->hw;
 279         struct ieee80211_chanctx_conf *chanctx_conf;
 280         struct ieee80211_channel *chan;
 281         int dtimper, dtimper_msec;
 282         int keep_alive;
 283         bool radar_detect = false;
 284         struct iwl_mvm_vif *mvmvif __maybe_unused =
 285                 iwl_mvm_vif_from_mac80211(vif);
 286         bool allow_uapsd = true;
 287
 288         cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
 289                                                             mvmvif->color));
 290         dtimper = hw->conf.ps_dtim_period ?: 1;
 291
 292         /*
 293          * Regardless of power management state the driver must set
 294          * keep alive period. FW will use it for sending keep alive NDPs
 295          * immediately after association. Check that keep alive period
 296          * is at least 3 * DTIM
 297          */
 298         dtimper_msec = dtimper * vif->bss_conf.beacon_int;
 299         keep_alive = max_t(int, 3 * dtimper_msec,
 300                            MSEC_PER_SEC * POWER_KEEP_ALIVE_PERIOD_SEC);
 301         keep_alive = DIV_ROUND_UP(keep_alive, MSEC_PER_SEC);
 302         cmd->keep_alive_seconds = cpu_to_le16(keep_alive);
 303
 304         if (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM ||
 305             mvm->ps_prevented)
 306                 return;
 307
 308         cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_SAVE_ENA_MSK);
 309
 310 #ifdef CONFIG_IWLWIFI_DEBUGFS
 311         if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_DISABLE_POWER_OFF &&
 312             mvmvif->dbgfs_pm.disable_power_off)
 313                 cmd->flags &= cpu_to_le16(~POWER_FLAGS_POWER_SAVE_ENA_MSK);
 314 #endif
 315         if (!vif->bss_conf.ps || mvmvif->pm_prevented)
 316                 return;
 317
 318         cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK);
 319
 320         if (vif->bss_conf.beacon_rate &&
 321             (vif->bss_conf.beacon_rate->bitrate == 10 ||
 322              vif->bss_conf.beacon_rate->bitrate == 60)) {
 323                 cmd->flags |= cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK);
 324                 cmd->lprx_rssi_threshold = POWER_LPRX_RSSI_THRESHOLD;
 325         }
 326
 327         /* Check if radar detection is required on current channel */
 328         rcu_read_lock();
 329         chanctx_conf = rcu_dereference(vif->chanctx_conf);
 330         WARN_ON(!chanctx_conf);
 331         if (chanctx_conf) {
 332                 chan = chanctx_conf->def.chan;
 333                 radar_detect = chan->flags & IEEE80211_CHAN_RADAR;
 334         }
 335         rcu_read_unlock();
 336
 337         /* Check skip over DTIM conditions */
 338         if (!radar_detect && (dtimper <= 10) &&
 339             (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_LP ||
 340              mvm->cur_ucode == IWL_UCODE_WOWLAN)) {
 341                 cmd->flags |= cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK);
 342                 cmd->skip_dtim_periods = 3;
 343         }
 344
 345         if (mvm->cur_ucode != IWL_UCODE_WOWLAN) {
 346                 cmd->rx_data_timeout =
 347                         cpu_to_le32(IWL_MVM_DEFAULT_PS_RX_DATA_TIMEOUT);
 348                 cmd->tx_data_timeout =
 349                         cpu_to_le32(IWL_MVM_DEFAULT_PS_TX_DATA_TIMEOUT);
 350         } else {
 351                 cmd->rx_data_timeout =
 352                         cpu_to_le32(IWL_MVM_WOWLAN_PS_RX_DATA_TIMEOUT);
 353                 cmd->tx_data_timeout =
 354                         cpu_to_le32(IWL_MVM_WOWLAN_PS_TX_DATA_TIMEOUT);
 355         }
 356
 357         if (!memcmp(mvmvif->uapsd_misbehaving_bssid, vif->bss_conf.bssid,
 358                     ETH_ALEN))
 359                 allow_uapsd = false;
 360
 361         if (vif->p2p &&
 362             !(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_P2P_PS_UAPSD))
 363                 allow_uapsd = false;
 364         /*
 365          * Avoid using uAPSD if P2P client is associated to GO that uses
 366          * opportunistic power save. This is due to current FW limitation.
 367          */
 368         if (vif->p2p &&
 369             vif->bss_conf.p2p_noa_attr.oppps_ctwindow &
 370             IEEE80211_P2P_OPPPS_ENABLE_BIT)
 371                 allow_uapsd = false;
 372
 373         if (allow_uapsd)
 374                 iwl_mvm_power_configure_uapsd(mvm, vif, cmd);
 375
 376 #ifdef CONFIG_IWLWIFI_DEBUGFS
 377         if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_KEEP_ALIVE)
 378                 cmd->keep_alive_seconds =
 379                         cpu_to_le16(mvmvif->dbgfs_pm.keep_alive_seconds);
 380         if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SKIP_OVER_DTIM) {
 381                 if (mvmvif->dbgfs_pm.skip_over_dtim)
 382                         cmd->flags |=
 383                                 cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK);
 384                 else
 385                         cmd->flags &=
 386                                 cpu_to_le16(~POWER_FLAGS_SKIP_OVER_DTIM_MSK);
 387         }
 388         if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_RX_DATA_TIMEOUT)
 389                 cmd->rx_data_timeout =
 390                         cpu_to_le32(mvmvif->dbgfs_pm.rx_data_timeout);
 391         if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_TX_DATA_TIMEOUT)
 392                 cmd->tx_data_timeout =
 393                         cpu_to_le32(mvmvif->dbgfs_pm.tx_data_timeout);
 394         if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS)
 395                 cmd->skip_dtim_periods = mvmvif->dbgfs_pm.skip_dtim_periods;
 396         if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_LPRX_ENA) {
 397                 if (mvmvif->dbgfs_pm.lprx_ena)
 398                         cmd->flags |= cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK);
 399                 else
 400                         cmd->flags &= cpu_to_le16(~POWER_FLAGS_LPRX_ENA_MSK);
 401         }
 402         if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD)
 403                 cmd->lprx_rssi_threshold = mvmvif->dbgfs_pm.lprx_rssi_threshold;
 404         if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SNOOZE_ENABLE) {
 405                 if (mvmvif->dbgfs_pm.snooze_ena)
 406                         cmd->flags |=
 407                                 cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK);
 408                 else
 409                         cmd->flags &=
 410                                 cpu_to_le16(~POWER_FLAGS_SNOOZE_ENA_MSK);
 411         }
 412         if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_UAPSD_MISBEHAVING) {
 413                 u16 flag = POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK;
 414                 if (mvmvif->dbgfs_pm.uapsd_misbehaving)
 415                         cmd->flags |= cpu_to_le16(flag);
 416                 else
 417                         cmd->flags &= cpu_to_le16(flag);
 418         }
 419 #endif /* CONFIG_IWLWIFI_DEBUGFS */
 420 }
 421
 422 static int iwl_mvm_power_mac_update_mode(struct iwl_mvm *mvm,
 423                                          struct ieee80211_vif *vif)
 424 {
 425         int ret;
 426         bool ba_enable;
 427         struct iwl_mac_power_cmd cmd = {};
 428
 429         if (vif->type != NL80211_IFTYPE_STATION)
 430                 return 0;
 431
 432         if (vif->p2p &&
 433             !(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_P2P_PS))
 434                 return 0;
 435
 436         iwl_mvm_power_build_cmd(mvm, vif, &cmd);
 437         iwl_mvm_power_log(mvm, &cmd);
 438
 439         ret = iwl_mvm_send_cmd_pdu(mvm, MAC_PM_POWER_TABLE, CMD_SYNC,
 440                                    sizeof(cmd), &cmd);
 441         if (ret)
 442                 return ret;
 443
 444         ba_enable = !!(cmd.flags &
 445                        cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK));
 446
 447         return iwl_mvm_update_beacon_abort(mvm, vif, ba_enable);
 448 }
 449
 450 static int iwl_mvm_power_mac_disable(struct iwl_mvm *mvm,
 451                                      struct ieee80211_vif *vif)
 452 {
 453         struct iwl_mac_power_cmd cmd = {};
 454         struct iwl_mvm_vif *mvmvif __maybe_unused =
 455                 iwl_mvm_vif_from_mac80211(vif);
 456
 457         if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
 458                 return 0;
 459
 460         cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
 461                                                            mvmvif->color));
 462
 463         if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
 464                 cmd.flags |= cpu_to_le16(POWER_FLAGS_POWER_SAVE_ENA_MSK);
 465
 466 #ifdef CONFIG_IWLWIFI_DEBUGFS
 467         if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_DISABLE_POWER_OFF &&
 468             mvmvif->dbgfs_pm.disable_power_off)
 469                 cmd.flags &= cpu_to_le16(~POWER_FLAGS_POWER_SAVE_ENA_MSK);
 470 #endif
 471         iwl_mvm_power_log(mvm, &cmd);
 472
 473         return iwl_mvm_send_cmd_pdu(mvm, MAC_PM_POWER_TABLE, CMD_ASYNC,
 474                                     sizeof(cmd), &cmd);
 475 }
 476
 477 static int _iwl_mvm_power_update_device(struct iwl_mvm *mvm, bool force_disable)
 478 {
 479         struct iwl_device_power_cmd cmd = {
 480                 .flags = cpu_to_le16(DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK),
 481         };
 482
 483         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DEVICE_PS_CMD))
 484                 return 0;
 485
 486         if (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM ||
 487             force_disable)
 488                 cmd.flags |= cpu_to_le16(DEVICE_POWER_FLAGS_CAM_MSK);
 489
 490 #ifdef CONFIG_IWLWIFI_DEBUGFS
 491         if ((mvm->cur_ucode == IWL_UCODE_WOWLAN) ? mvm->disable_power_off_d3 :
 492             mvm->disable_power_off)
 493                 cmd.flags &=
 494                         cpu_to_le16(~DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK);
 495 #endif
 496         IWL_DEBUG_POWER(mvm,
 497                         "Sending device power command with flags = 0x%X\n",
 498                         cmd.flags);
 499
 500         return iwl_mvm_send_cmd_pdu(mvm, POWER_TABLE_CMD, CMD_SYNC, sizeof(cmd),
 501                                     &cmd);
 502 }
 503
 504 static int iwl_mvm_power_update_device(struct iwl_mvm *mvm)
 505 {
 506         return _iwl_mvm_power_update_device(mvm, false);
 507 }
 508
 509 void iwl_mvm_power_vif_assoc(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 510 {
 511         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 512
 513         if (memcmp(vif->bss_conf.bssid, mvmvif->uapsd_misbehaving_bssid,
 514                    ETH_ALEN))
 515                 memset(mvmvif->uapsd_misbehaving_bssid, 0, ETH_ALEN);
 516 }
 517
 518 static void iwl_mvm_power_uapsd_misbehav_ap_iterator(void *_data, u8 *mac,
 519                                                      struct ieee80211_vif *vif)
 520 {
 521         u8 *ap_sta_id = _data;
 522         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 523
 524         /* The ap_sta_id is not expected to change during current association
 525          * so no explicit protection is needed
 526          */
 527         if (mvmvif->ap_sta_id == *ap_sta_id)
 528                 memcpy(mvmvif->uapsd_misbehaving_bssid, vif->bss_conf.bssid,
 529                        ETH_ALEN);
 530 }
 531
 532 int iwl_mvm_power_uapsd_misbehaving_ap_notif(struct iwl_mvm *mvm,
 533                                              struct iwl_rx_cmd_buffer *rxb,
 534                                              struct iwl_device_cmd *cmd)
 535 {
 536         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 537         struct iwl_uapsd_misbehaving_ap_notif *notif = (void *)pkt->data;
 538         u8 ap_sta_id = le32_to_cpu(notif->sta_id);
 539
 540         ieee80211_iterate_active_interfaces_atomic(
 541                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 542                 iwl_mvm_power_uapsd_misbehav_ap_iterator, &ap_sta_id);
 543
 544         return 0;
 545 }
 546
 547 static void iwl_mvm_power_binding_iterator(void *_data, u8 *mac,
 548                                            struct ieee80211_vif *vif)
 549 {
 550         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 551         struct iwl_mvm *mvm = _data;
 552         int ret;
 553
 554         mvmvif->pm_prevented = (mvm->bound_vif_cnt <= 1) ? false : true;
 555
 556         ret = iwl_mvm_power_mac_update_mode(mvm, vif);
 557         WARN_ONCE(ret, "Failed to update power parameters on a specific vif\n");
 558 }
 559
 560 static void _iwl_mvm_power_update_binding(struct iwl_mvm *mvm,
 561                                           struct ieee80211_vif *vif,
 562                                           bool assign)
 563 {
 564         if (vif->type == NL80211_IFTYPE_MONITOR) {
 565                 int ret = _iwl_mvm_power_update_device(mvm, assign);
 566                 mvm->ps_prevented = assign;
 567                 WARN_ONCE(ret, "Failed to update power device state\n");
 568         }
 569
 570         ieee80211_iterate_active_interfaces(mvm->hw,
 571                                             IEEE80211_IFACE_ITER_NORMAL,
 572                                             iwl_mvm_power_binding_iterator,
 573                                             mvm);
 574 }
 575
 576 #ifdef CONFIG_IWLWIFI_DEBUGFS
 577 static int iwl_mvm_power_mac_dbgfs_read(struct iwl_mvm *mvm,
 578                                         struct ieee80211_vif *vif, char *buf,
 579                                         int bufsz)
 580 {
 581         struct iwl_mac_power_cmd cmd = {};
 582         int pos = 0;
 583
 584         iwl_mvm_power_build_cmd(mvm, vif, &cmd);
 585
 586         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DEVICE_PS_CMD))
 587                 pos += scnprintf(buf+pos, bufsz-pos, "disable_power_off = %d\n",
 588                                  (cmd.flags &
 589                                  cpu_to_le16(POWER_FLAGS_POWER_SAVE_ENA_MSK)) ?
 590                                  0 : 1);
 591         pos += scnprintf(buf+pos, bufsz-pos, "power_scheme = %d\n",
 592                          iwlmvm_mod_params.power_scheme);
 593         pos += scnprintf(buf+pos, bufsz-pos, "flags = 0x%x\n",
 594                          le16_to_cpu(cmd.flags));
 595         pos += scnprintf(buf+pos, bufsz-pos, "keep_alive = %d\n",
 596                          le16_to_cpu(cmd.keep_alive_seconds));
 597
 598         if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK)))
 599                 return pos;
 600
 601         pos += scnprintf(buf+pos, bufsz-pos, "skip_over_dtim = %d\n",
 602                          (cmd.flags &
 603                          cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK)) ? 1 : 0);
 604         pos += scnprintf(buf+pos, bufsz-pos, "skip_dtim_periods = %d\n",
 605                          cmd.skip_dtim_periods);
 606         if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK))) {
 607                 pos += scnprintf(buf+pos, bufsz-pos, "rx_data_timeout = %d\n",
 608                                  le32_to_cpu(cmd.rx_data_timeout));
 609                 pos += scnprintf(buf+pos, bufsz-pos, "tx_data_timeout = %d\n",
 610                                  le32_to_cpu(cmd.tx_data_timeout));
 611         }
 612         if (cmd.flags & cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK))
 613                 pos += scnprintf(buf+pos, bufsz-pos,
 614                                  "lprx_rssi_threshold = %d\n",
 615                                  cmd.lprx_rssi_threshold);
 616
 617         if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK)))
 618                 return pos;
 619
 620         pos += scnprintf(buf+pos, bufsz-pos, "rx_data_timeout_uapsd = %d\n",
 621                          le32_to_cpu(cmd.rx_data_timeout_uapsd));
 622         pos += scnprintf(buf+pos, bufsz-pos, "tx_data_timeout_uapsd = %d\n",
 623                          le32_to_cpu(cmd.tx_data_timeout_uapsd));
 624         pos += scnprintf(buf+pos, bufsz-pos, "qndp_tid = %d\n", cmd.qndp_tid);
 625         pos += scnprintf(buf+pos, bufsz-pos, "uapsd_ac_flags = 0x%x\n",
 626                          cmd.uapsd_ac_flags);
 627         pos += scnprintf(buf+pos, bufsz-pos, "uapsd_max_sp = %d\n",
 628                          cmd.uapsd_max_sp);
 629         pos += scnprintf(buf+pos, bufsz-pos, "heavy_tx_thld_packets = %d\n",
 630                          cmd.heavy_tx_thld_packets);
 631         pos += scnprintf(buf+pos, bufsz-pos, "heavy_rx_thld_packets = %d\n",
 632                          cmd.heavy_rx_thld_packets);
 633         pos += scnprintf(buf+pos, bufsz-pos, "heavy_tx_thld_percentage = %d\n",
 634                          cmd.heavy_tx_thld_percentage);
 635         pos += scnprintf(buf+pos, bufsz-pos, "heavy_rx_thld_percentage = %d\n",
 636                          cmd.heavy_rx_thld_percentage);
 637         pos += scnprintf(buf+pos, bufsz-pos, "uapsd_misbehaving_enable = %d\n",
 638                          (cmd.flags &
 639                           cpu_to_le16(POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK)) ?
 640                          1 : 0);
 641
 642         if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK)))
 643                 return pos;
 644
 645         pos += scnprintf(buf+pos, bufsz-pos, "snooze_interval = %d\n",
 646                          cmd.snooze_interval);
 647         pos += scnprintf(buf+pos, bufsz-pos, "snooze_window = %d\n",
 648                          cmd.snooze_window);
 649
 650         return pos;
 651 }
 652
 653 void
 654 iwl_mvm_beacon_filter_debugfs_parameters(struct ieee80211_vif *vif,
 655                                          struct iwl_beacon_filter_cmd *cmd)
 656 {
 657         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 658         struct iwl_dbgfs_bf *dbgfs_bf = &mvmvif->dbgfs_bf;
 659
 660         if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ENERGY_DELTA)
 661                 cmd->bf_energy_delta = cpu_to_le32(dbgfs_bf->bf_energy_delta);
 662         if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA)
 663                 cmd->bf_roaming_energy_delta =
 664                                 cpu_to_le32(dbgfs_bf->bf_roaming_energy_delta);
 665         if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ROAMING_STATE)
 666                 cmd->bf_roaming_state = cpu_to_le32(dbgfs_bf->bf_roaming_state);
 667         if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_THRESHOLD)
 668                 cmd->bf_temp_threshold =
 669                                 cpu_to_le32(dbgfs_bf->bf_temp_threshold);
 670         if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_FAST_FILTER)
 671                 cmd->bf_temp_fast_filter =
 672                                 cpu_to_le32(dbgfs_bf->bf_temp_fast_filter);
 673         if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_SLOW_FILTER)
 674                 cmd->bf_temp_slow_filter =
 675                                 cpu_to_le32(dbgfs_bf->bf_temp_slow_filter);
 676         if (dbgfs_bf->mask & MVM_DEBUGFS_BF_DEBUG_FLAG)
 677                 cmd->bf_debug_flag = cpu_to_le32(dbgfs_bf->bf_debug_flag);
 678         if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ESCAPE_TIMER)
 679                 cmd->bf_escape_timer = cpu_to_le32(dbgfs_bf->bf_escape_timer);
 680         if (dbgfs_bf->mask & MVM_DEBUGFS_BA_ESCAPE_TIMER)
 681                 cmd->ba_escape_timer = cpu_to_le32(dbgfs_bf->ba_escape_timer);
 682         if (dbgfs_bf->mask & MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT)
 683                 cmd->ba_enable_beacon_abort =
 684                                 cpu_to_le32(dbgfs_bf->ba_enable_beacon_abort);
 685 }
 686 #endif
 687
 688 int iwl_mvm_enable_beacon_filter(struct iwl_mvm *mvm,
 689                                  struct ieee80211_vif *vif)
 690 {
 691         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 692         struct iwl_beacon_filter_cmd cmd = {
 693                 IWL_BF_CMD_CONFIG_DEFAULTS,
 694                 .bf_enable_beacon_filter = cpu_to_le32(1),
 695         };
 696         int ret;
 697
 698         if (mvmvif != mvm->bf_allowed_vif ||
 699             vif->type != NL80211_IFTYPE_STATION || vif->p2p)
 700                 return 0;
 701
 702         iwl_mvm_beacon_filter_set_cqm_params(mvm, vif, &cmd);
 703         iwl_mvm_beacon_filter_debugfs_parameters(vif, &cmd);
 704         ret = iwl_mvm_beacon_filter_send_cmd(mvm, &cmd);
 705
 706         if (!ret)
 707                 mvmvif->bf_data.bf_enabled = true;
 708
 709         return ret;
 710 }
 711
 712 int iwl_mvm_disable_beacon_filter(struct iwl_mvm *mvm,
 713                                   struct ieee80211_vif *vif)
 714 {
 715         struct iwl_beacon_filter_cmd cmd = {};
 716         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 717         int ret;
 718
 719         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BF_UPDATED) ||
 720             vif->type != NL80211_IFTYPE_STATION || vif->p2p)
 721                 return 0;
 722
 723         ret = iwl_mvm_beacon_filter_send_cmd(mvm, &cmd);
 724
 725         if (!ret)
 726                 mvmvif->bf_data.bf_enabled = false;
 727
 728         return ret;
 729 }
 730
 731 int iwl_mvm_update_beacon_filter(struct iwl_mvm *mvm,
 732                                  struct ieee80211_vif *vif)
 733 {
 734         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 735
 736         if (!mvmvif->bf_data.bf_enabled)
 737                 return 0;
 738
 739         return iwl_mvm_enable_beacon_filter(mvm, vif);
 740 }
 741
 742 const struct iwl_mvm_power_ops pm_mac_ops = {
 743         .power_update_mode = iwl_mvm_power_mac_update_mode,
 744         .power_update_device_mode = iwl_mvm_power_update_device,
 745         .power_disable = iwl_mvm_power_mac_disable,
 746         .power_update_binding = _iwl_mvm_power_update_binding,
 747 #ifdef CONFIG_IWLWIFI_DEBUGFS
 748         .power_dbgfs_read = iwl_mvm_power_mac_dbgfs_read,
 749 #endif
 750 };