linux/drivers/net/wireless/intel/iwlwifi/dvm/lib.c
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   1/******************************************************************************
   2 *
   3 * GPL LICENSE SUMMARY
   4 *
   5 * Copyright(c) 2008 - 2014 Intel Corporation. All rights reserved.
   6 *
   7 * This program is free software; you can redistribute it and/or modify
   8 * it under the terms of version 2 of the GNU General Public License as
   9 * published by the Free Software Foundation.
  10 *
  11 * This program is distributed in the hope that it will be useful, but
  12 * WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 * General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU General Public License
  17 * along with this program; if not, write to the Free Software
  18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  19 * USA
  20 *
  21 * The full GNU General Public License is included in this distribution
  22 * in the file called COPYING.
  23 *
  24 * Contact Information:
  25 *  Intel Linux Wireless <linuxwifi@intel.com>
  26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27 *
  28 *****************************************************************************/
  29#include <linux/etherdevice.h>
  30#include <linux/kernel.h>
  31#include <linux/module.h>
  32#include <linux/sched.h>
  33#include <net/mac80211.h>
  34
  35#include "iwl-io.h"
  36#include "iwl-agn-hw.h"
  37#include "iwl-trans.h"
  38#include "iwl-modparams.h"
  39
  40#include "dev.h"
  41#include "agn.h"
  42
  43int iwlagn_hw_valid_rtc_data_addr(u32 addr)
  44{
  45        return (addr >= IWLAGN_RTC_DATA_LOWER_BOUND) &&
  46                (addr < IWLAGN_RTC_DATA_UPPER_BOUND);
  47}
  48
  49int iwlagn_send_tx_power(struct iwl_priv *priv)
  50{
  51        struct iwlagn_tx_power_dbm_cmd tx_power_cmd;
  52        u8 tx_ant_cfg_cmd;
  53
  54        if (WARN_ONCE(test_bit(STATUS_SCAN_HW, &priv->status),
  55                      "TX Power requested while scanning!\n"))
  56                return -EAGAIN;
  57
  58        /* half dBm need to multiply */
  59        tx_power_cmd.global_lmt = (s8)(2 * priv->tx_power_user_lmt);
  60
  61        if (tx_power_cmd.global_lmt > priv->nvm_data->max_tx_pwr_half_dbm) {
  62                /*
  63                 * For the newer devices which using enhanced/extend tx power
  64                 * table in EEPROM, the format is in half dBm. driver need to
  65                 * convert to dBm format before report to mac80211.
  66                 * By doing so, there is a possibility of 1/2 dBm resolution
  67                 * lost. driver will perform "round-up" operation before
  68                 * reporting, but it will cause 1/2 dBm tx power over the
  69                 * regulatory limit. Perform the checking here, if the
  70                 * "tx_power_user_lmt" is higher than EEPROM value (in
  71                 * half-dBm format), lower the tx power based on EEPROM
  72                 */
  73                tx_power_cmd.global_lmt =
  74                        priv->nvm_data->max_tx_pwr_half_dbm;
  75        }
  76        tx_power_cmd.flags = IWLAGN_TX_POWER_NO_CLOSED;
  77        tx_power_cmd.srv_chan_lmt = IWLAGN_TX_POWER_AUTO;
  78
  79        if (IWL_UCODE_API(priv->fw->ucode_ver) == 1)
  80                tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD_V1;
  81        else
  82                tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD;
  83
  84        return iwl_dvm_send_cmd_pdu(priv, tx_ant_cfg_cmd, 0,
  85                        sizeof(tx_power_cmd), &tx_power_cmd);
  86}
  87
  88void iwlagn_temperature(struct iwl_priv *priv)
  89{
  90        lockdep_assert_held(&priv->statistics.lock);
  91
  92        /* store temperature from correct statistics (in Celsius) */
  93        priv->temperature = le32_to_cpu(priv->statistics.common.temperature);
  94        iwl_tt_handler(priv);
  95}
  96
  97int iwlagn_hwrate_to_mac80211_idx(u32 rate_n_flags, enum nl80211_band band)
  98{
  99        int idx = 0;
 100        int band_offset = 0;
 101
 102        /* HT rate format: mac80211 wants an MCS number, which is just LSB */
 103        if (rate_n_flags & RATE_MCS_HT_MSK) {
 104                idx = (rate_n_flags & 0xff);
 105                return idx;
 106        /* Legacy rate format, search for match in table */
 107        } else {
 108                if (band == NL80211_BAND_5GHZ)
 109                        band_offset = IWL_FIRST_OFDM_RATE;
 110                for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
 111                        if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
 112                                return idx - band_offset;
 113        }
 114
 115        return -1;
 116}
 117
 118int iwlagn_manage_ibss_station(struct iwl_priv *priv,
 119                               struct ieee80211_vif *vif, bool add)
 120{
 121        struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
 122
 123        if (add)
 124                return iwlagn_add_bssid_station(priv, vif_priv->ctx,
 125                                                vif->bss_conf.bssid,
 126                                                &vif_priv->ibss_bssid_sta_id);
 127        return iwl_remove_station(priv, vif_priv->ibss_bssid_sta_id,
 128                                  vif->bss_conf.bssid);
 129}
 130
 131/**
 132 * iwlagn_txfifo_flush: send REPLY_TXFIFO_FLUSH command to uCode
 133 *
 134 * pre-requirements:
 135 *  1. acquire mutex before calling
 136 *  2. make sure rf is on and not in exit state
 137 */
 138int iwlagn_txfifo_flush(struct iwl_priv *priv, u32 scd_q_msk)
 139{
 140        struct iwl_txfifo_flush_cmd_v3 flush_cmd_v3 = {
 141                .flush_control = cpu_to_le16(IWL_DROP_ALL),
 142        };
 143        struct iwl_txfifo_flush_cmd_v2 flush_cmd_v2 = {
 144                .flush_control = cpu_to_le16(IWL_DROP_ALL),
 145        };
 146
 147        u32 queue_control = IWL_SCD_VO_MSK | IWL_SCD_VI_MSK |
 148                            IWL_SCD_BE_MSK | IWL_SCD_BK_MSK | IWL_SCD_MGMT_MSK;
 149
 150        if ((priv->valid_contexts != BIT(IWL_RXON_CTX_BSS)))
 151                queue_control |= IWL_PAN_SCD_VO_MSK | IWL_PAN_SCD_VI_MSK |
 152                                 IWL_PAN_SCD_BE_MSK | IWL_PAN_SCD_BK_MSK |
 153                                 IWL_PAN_SCD_MGMT_MSK |
 154                                 IWL_PAN_SCD_MULTICAST_MSK;
 155
 156        if (priv->nvm_data->sku_cap_11n_enable)
 157                queue_control |= IWL_AGG_TX_QUEUE_MSK;
 158
 159        if (scd_q_msk)
 160                queue_control = scd_q_msk;
 161
 162        IWL_DEBUG_INFO(priv, "queue control: 0x%x\n", queue_control);
 163        flush_cmd_v3.queue_control = cpu_to_le32(queue_control);
 164        flush_cmd_v2.queue_control = cpu_to_le16((u16)queue_control);
 165
 166        if (IWL_UCODE_API(priv->fw->ucode_ver) > 2)
 167                return iwl_dvm_send_cmd_pdu(priv, REPLY_TXFIFO_FLUSH, 0,
 168                                            sizeof(flush_cmd_v3),
 169                                            &flush_cmd_v3);
 170        return iwl_dvm_send_cmd_pdu(priv, REPLY_TXFIFO_FLUSH, 0,
 171                                    sizeof(flush_cmd_v2), &flush_cmd_v2);
 172}
 173
 174void iwlagn_dev_txfifo_flush(struct iwl_priv *priv)
 175{
 176        mutex_lock(&priv->mutex);
 177        ieee80211_stop_queues(priv->hw);
 178        if (iwlagn_txfifo_flush(priv, 0)) {
 179                IWL_ERR(priv, "flush request fail\n");
 180                goto done;
 181        }
 182        IWL_DEBUG_INFO(priv, "wait transmit/flush all frames\n");
 183        iwl_trans_wait_tx_queue_empty(priv->trans, 0xffffffff);
 184done:
 185        ieee80211_wake_queues(priv->hw);
 186        mutex_unlock(&priv->mutex);
 187}
 188
 189/*
 190 * BT coex
 191 */
 192/* Notmal TDM */
 193static const __le32 iwlagn_def_3w_lookup[IWLAGN_BT_DECISION_LUT_SIZE] = {
 194        cpu_to_le32(0xaaaaaaaa),
 195        cpu_to_le32(0xaaaaaaaa),
 196        cpu_to_le32(0xaeaaaaaa),
 197        cpu_to_le32(0xaaaaaaaa),
 198        cpu_to_le32(0xcc00ff28),
 199        cpu_to_le32(0x0000aaaa),
 200        cpu_to_le32(0xcc00aaaa),
 201        cpu_to_le32(0x0000aaaa),
 202        cpu_to_le32(0xc0004000),
 203        cpu_to_le32(0x00004000),
 204        cpu_to_le32(0xf0005000),
 205        cpu_to_le32(0xf0005000),
 206};
 207
 208/* Full concurrency */
 209static const __le32 iwlagn_concurrent_lookup[IWLAGN_BT_DECISION_LUT_SIZE] = {
 210        cpu_to_le32(0xaaaaaaaa),
 211        cpu_to_le32(0xaaaaaaaa),
 212        cpu_to_le32(0xaaaaaaaa),
 213        cpu_to_le32(0xaaaaaaaa),
 214        cpu_to_le32(0xaaaaaaaa),
 215        cpu_to_le32(0xaaaaaaaa),
 216        cpu_to_le32(0xaaaaaaaa),
 217        cpu_to_le32(0xaaaaaaaa),
 218        cpu_to_le32(0x00000000),
 219        cpu_to_le32(0x00000000),
 220        cpu_to_le32(0x00000000),
 221        cpu_to_le32(0x00000000),
 222};
 223
 224void iwlagn_send_advance_bt_config(struct iwl_priv *priv)
 225{
 226        struct iwl_basic_bt_cmd basic = {
 227                .max_kill = IWLAGN_BT_MAX_KILL_DEFAULT,
 228                .bt3_timer_t7_value = IWLAGN_BT3_T7_DEFAULT,
 229                .bt3_prio_sample_time = IWLAGN_BT3_PRIO_SAMPLE_DEFAULT,
 230                .bt3_timer_t2_value = IWLAGN_BT3_T2_DEFAULT,
 231        };
 232        struct iwl_bt_cmd_v1 bt_cmd_v1;
 233        struct iwl_bt_cmd_v2 bt_cmd_v2;
 234        int ret;
 235
 236        BUILD_BUG_ON(sizeof(iwlagn_def_3w_lookup) !=
 237                        sizeof(basic.bt3_lookup_table));
 238
 239        if (priv->lib->bt_params) {
 240                /*
 241                 * newer generation of devices (2000 series and newer)
 242                 * use the version 2 of the bt command
 243                 * we need to make sure sending the host command
 244                 * with correct data structure to avoid uCode assert
 245                 */
 246                if (priv->lib->bt_params->bt_session_2) {
 247                        bt_cmd_v2.prio_boost = cpu_to_le32(
 248                                priv->lib->bt_params->bt_prio_boost);
 249                        bt_cmd_v2.tx_prio_boost = 0;
 250                        bt_cmd_v2.rx_prio_boost = 0;
 251                } else {
 252                        /* older version only has 8 bits */
 253                        WARN_ON(priv->lib->bt_params->bt_prio_boost & ~0xFF);
 254                        bt_cmd_v1.prio_boost =
 255                                priv->lib->bt_params->bt_prio_boost;
 256                        bt_cmd_v1.tx_prio_boost = 0;
 257                        bt_cmd_v1.rx_prio_boost = 0;
 258                }
 259        } else {
 260                IWL_ERR(priv, "failed to construct BT Coex Config\n");
 261                return;
 262        }
 263
 264        /*
 265         * Possible situations when BT needs to take over for receive,
 266         * at the same time where STA needs to response to AP's frame(s),
 267         * reduce the tx power of the required response frames, by that,
 268         * allow the concurrent BT receive & WiFi transmit
 269         * (BT - ANT A, WiFi -ANT B), without interference to one another
 270         *
 271         * Reduced tx power apply to control frames only (ACK/Back/CTS)
 272         * when indicated by the BT config command
 273         */
 274        basic.kill_ack_mask = priv->kill_ack_mask;
 275        basic.kill_cts_mask = priv->kill_cts_mask;
 276        if (priv->reduced_txpower)
 277                basic.reduce_txpower = IWLAGN_BT_REDUCED_TX_PWR;
 278        basic.valid = priv->bt_valid;
 279
 280        /*
 281         * Configure BT coex mode to "no coexistence" when the
 282         * user disabled BT coexistence, we have no interface
 283         * (might be in monitor mode), or the interface is in
 284         * IBSS mode (no proper uCode support for coex then).
 285         */
 286        if (!iwlwifi_mod_params.bt_coex_active ||
 287            priv->iw_mode == NL80211_IFTYPE_ADHOC) {
 288                basic.flags = IWLAGN_BT_FLAG_COEX_MODE_DISABLED;
 289        } else {
 290                basic.flags = IWLAGN_BT_FLAG_COEX_MODE_3W <<
 291                                        IWLAGN_BT_FLAG_COEX_MODE_SHIFT;
 292
 293                if (!priv->bt_enable_pspoll)
 294                        basic.flags |= IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE;
 295                else
 296                        basic.flags &= ~IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE;
 297
 298                if (priv->bt_ch_announce)
 299                        basic.flags |= IWLAGN_BT_FLAG_CHANNEL_INHIBITION;
 300                IWL_DEBUG_COEX(priv, "BT coex flag: 0X%x\n", basic.flags);
 301        }
 302        priv->bt_enable_flag = basic.flags;
 303        if (priv->bt_full_concurrent)
 304                memcpy(basic.bt3_lookup_table, iwlagn_concurrent_lookup,
 305                        sizeof(iwlagn_concurrent_lookup));
 306        else
 307                memcpy(basic.bt3_lookup_table, iwlagn_def_3w_lookup,
 308                        sizeof(iwlagn_def_3w_lookup));
 309
 310        IWL_DEBUG_COEX(priv, "BT coex %s in %s mode\n",
 311                       basic.flags ? "active" : "disabled",
 312                       priv->bt_full_concurrent ?
 313                       "full concurrency" : "3-wire");
 314
 315        if (priv->lib->bt_params->bt_session_2) {
 316                memcpy(&bt_cmd_v2.basic, &basic,
 317                        sizeof(basic));
 318                ret = iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 319                        0, sizeof(bt_cmd_v2), &bt_cmd_v2);
 320        } else {
 321                memcpy(&bt_cmd_v1.basic, &basic,
 322                        sizeof(basic));
 323                ret = iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 324                        0, sizeof(bt_cmd_v1), &bt_cmd_v1);
 325        }
 326        if (ret)
 327                IWL_ERR(priv, "failed to send BT Coex Config\n");
 328
 329}
 330
 331void iwlagn_bt_adjust_rssi_monitor(struct iwl_priv *priv, bool rssi_ena)
 332{
 333        struct iwl_rxon_context *ctx, *found_ctx = NULL;
 334        bool found_ap = false;
 335
 336        lockdep_assert_held(&priv->mutex);
 337
 338        /* Check whether AP or GO mode is active. */
 339        if (rssi_ena) {
 340                for_each_context(priv, ctx) {
 341                        if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_AP &&
 342                            iwl_is_associated_ctx(ctx)) {
 343                                found_ap = true;
 344                                break;
 345                        }
 346                }
 347        }
 348
 349        /*
 350         * If disable was received or If GO/AP mode, disable RSSI
 351         * measurements.
 352         */
 353        if (!rssi_ena || found_ap) {
 354                if (priv->cur_rssi_ctx) {
 355                        ctx = priv->cur_rssi_ctx;
 356                        ieee80211_disable_rssi_reports(ctx->vif);
 357                        priv->cur_rssi_ctx = NULL;
 358                }
 359                return;
 360        }
 361
 362        /*
 363         * If rssi measurements need to be enabled, consider all cases now.
 364         * Figure out how many contexts are active.
 365         */
 366        for_each_context(priv, ctx) {
 367                if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION &&
 368                    iwl_is_associated_ctx(ctx)) {
 369                        found_ctx = ctx;
 370                        break;
 371                }
 372        }
 373
 374        /*
 375         * rssi monitor already enabled for the correct interface...nothing
 376         * to do.
 377         */
 378        if (found_ctx == priv->cur_rssi_ctx)
 379                return;
 380
 381        /*
 382         * Figure out if rssi monitor is currently enabled, and needs
 383         * to be changed. If rssi monitor is already enabled, disable
 384         * it first else just enable rssi measurements on the
 385         * interface found above.
 386         */
 387        if (priv->cur_rssi_ctx) {
 388                ctx = priv->cur_rssi_ctx;
 389                if (ctx->vif)
 390                        ieee80211_disable_rssi_reports(ctx->vif);
 391        }
 392
 393        priv->cur_rssi_ctx = found_ctx;
 394
 395        if (!found_ctx)
 396                return;
 397
 398        ieee80211_enable_rssi_reports(found_ctx->vif,
 399                        IWLAGN_BT_PSP_MIN_RSSI_THRESHOLD,
 400                        IWLAGN_BT_PSP_MAX_RSSI_THRESHOLD);
 401}
 402
 403static bool iwlagn_bt_traffic_is_sco(struct iwl_bt_uart_msg *uart_msg)
 404{
 405        return (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3) >>
 406                BT_UART_MSG_FRAME3SCOESCO_POS;
 407}
 408
 409static void iwlagn_bt_traffic_change_work(struct work_struct *work)
 410{
 411        struct iwl_priv *priv =
 412                container_of(work, struct iwl_priv, bt_traffic_change_work);
 413        struct iwl_rxon_context *ctx;
 414        int smps_request = -1;
 415
 416        if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) {
 417                /* bt coex disabled */
 418                return;
 419        }
 420
 421        /*
 422         * Note: bt_traffic_load can be overridden by scan complete and
 423         * coex profile notifications. Ignore that since only bad consequence
 424         * can be not matching debug print with actual state.
 425         */
 426        IWL_DEBUG_COEX(priv, "BT traffic load changes: %d\n",
 427                       priv->bt_traffic_load);
 428
 429        switch (priv->bt_traffic_load) {
 430        case IWL_BT_COEX_TRAFFIC_LOAD_NONE:
 431                if (priv->bt_status)
 432                        smps_request = IEEE80211_SMPS_DYNAMIC;
 433                else
 434                        smps_request = IEEE80211_SMPS_AUTOMATIC;
 435                break;
 436        case IWL_BT_COEX_TRAFFIC_LOAD_LOW:
 437                smps_request = IEEE80211_SMPS_DYNAMIC;
 438                break;
 439        case IWL_BT_COEX_TRAFFIC_LOAD_HIGH:
 440        case IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS:
 441                smps_request = IEEE80211_SMPS_STATIC;
 442                break;
 443        default:
 444                IWL_ERR(priv, "Invalid BT traffic load: %d\n",
 445                        priv->bt_traffic_load);
 446                break;
 447        }
 448
 449        mutex_lock(&priv->mutex);
 450
 451        /*
 452         * We can not send command to firmware while scanning. When the scan
 453         * complete we will schedule this work again. We do check with mutex
 454         * locked to prevent new scan request to arrive. We do not check
 455         * STATUS_SCANNING to avoid race when queue_work two times from
 456         * different notifications, but quit and not perform any work at all.
 457         */
 458        if (test_bit(STATUS_SCAN_HW, &priv->status))
 459                goto out;
 460
 461        iwl_update_chain_flags(priv);
 462
 463        if (smps_request != -1) {
 464                priv->current_ht_config.smps = smps_request;
 465                for_each_context(priv, ctx) {
 466                        if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION)
 467                                ieee80211_request_smps(ctx->vif, smps_request);
 468                }
 469        }
 470
 471        /*
 472         * Dynamic PS poll related functionality. Adjust RSSI measurements if
 473         * necessary.
 474         */
 475        iwlagn_bt_coex_rssi_monitor(priv);
 476out:
 477        mutex_unlock(&priv->mutex);
 478}
 479
 480/*
 481 * If BT sco traffic, and RSSI monitor is enabled, move measurements to the
 482 * correct interface or disable it if this is the last interface to be
 483 * removed.
 484 */
 485void iwlagn_bt_coex_rssi_monitor(struct iwl_priv *priv)
 486{
 487        if (priv->bt_is_sco &&
 488            priv->bt_traffic_load == IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS)
 489                iwlagn_bt_adjust_rssi_monitor(priv, true);
 490        else
 491                iwlagn_bt_adjust_rssi_monitor(priv, false);
 492}
 493
 494static void iwlagn_print_uartmsg(struct iwl_priv *priv,
 495                                struct iwl_bt_uart_msg *uart_msg)
 496{
 497        IWL_DEBUG_COEX(priv, "Message Type = 0x%X, SSN = 0x%X, "
 498                        "Update Req = 0x%X\n",
 499                (BT_UART_MSG_FRAME1MSGTYPE_MSK & uart_msg->frame1) >>
 500                        BT_UART_MSG_FRAME1MSGTYPE_POS,
 501                (BT_UART_MSG_FRAME1SSN_MSK & uart_msg->frame1) >>
 502                        BT_UART_MSG_FRAME1SSN_POS,
 503                (BT_UART_MSG_FRAME1UPDATEREQ_MSK & uart_msg->frame1) >>
 504                        BT_UART_MSG_FRAME1UPDATEREQ_POS);
 505
 506        IWL_DEBUG_COEX(priv, "Open connections = 0x%X, Traffic load = 0x%X, "
 507                        "Chl_SeqN = 0x%X, In band = 0x%X\n",
 508                (BT_UART_MSG_FRAME2OPENCONNECTIONS_MSK & uart_msg->frame2) >>
 509                        BT_UART_MSG_FRAME2OPENCONNECTIONS_POS,
 510                (BT_UART_MSG_FRAME2TRAFFICLOAD_MSK & uart_msg->frame2) >>
 511                        BT_UART_MSG_FRAME2TRAFFICLOAD_POS,
 512                (BT_UART_MSG_FRAME2CHLSEQN_MSK & uart_msg->frame2) >>
 513                        BT_UART_MSG_FRAME2CHLSEQN_POS,
 514                (BT_UART_MSG_FRAME2INBAND_MSK & uart_msg->frame2) >>
 515                        BT_UART_MSG_FRAME2INBAND_POS);
 516
 517        IWL_DEBUG_COEX(priv, "SCO/eSCO = 0x%X, Sniff = 0x%X, A2DP = 0x%X, "
 518                        "ACL = 0x%X, Master = 0x%X, OBEX = 0x%X\n",
 519                (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3) >>
 520                        BT_UART_MSG_FRAME3SCOESCO_POS,
 521                (BT_UART_MSG_FRAME3SNIFF_MSK & uart_msg->frame3) >>
 522                        BT_UART_MSG_FRAME3SNIFF_POS,
 523                (BT_UART_MSG_FRAME3A2DP_MSK & uart_msg->frame3) >>
 524                        BT_UART_MSG_FRAME3A2DP_POS,
 525                (BT_UART_MSG_FRAME3ACL_MSK & uart_msg->frame3) >>
 526                        BT_UART_MSG_FRAME3ACL_POS,
 527                (BT_UART_MSG_FRAME3MASTER_MSK & uart_msg->frame3) >>
 528                        BT_UART_MSG_FRAME3MASTER_POS,
 529                (BT_UART_MSG_FRAME3OBEX_MSK & uart_msg->frame3) >>
 530                        BT_UART_MSG_FRAME3OBEX_POS);
 531
 532        IWL_DEBUG_COEX(priv, "Idle duration = 0x%X\n",
 533                (BT_UART_MSG_FRAME4IDLEDURATION_MSK & uart_msg->frame4) >>
 534                        BT_UART_MSG_FRAME4IDLEDURATION_POS);
 535
 536        IWL_DEBUG_COEX(priv, "Tx Activity = 0x%X, Rx Activity = 0x%X, "
 537                        "eSCO Retransmissions = 0x%X\n",
 538                (BT_UART_MSG_FRAME5TXACTIVITY_MSK & uart_msg->frame5) >>
 539                        BT_UART_MSG_FRAME5TXACTIVITY_POS,
 540                (BT_UART_MSG_FRAME5RXACTIVITY_MSK & uart_msg->frame5) >>
 541                        BT_UART_MSG_FRAME5RXACTIVITY_POS,
 542                (BT_UART_MSG_FRAME5ESCORETRANSMIT_MSK & uart_msg->frame5) >>
 543                        BT_UART_MSG_FRAME5ESCORETRANSMIT_POS);
 544
 545        IWL_DEBUG_COEX(priv, "Sniff Interval = 0x%X, Discoverable = 0x%X\n",
 546                (BT_UART_MSG_FRAME6SNIFFINTERVAL_MSK & uart_msg->frame6) >>
 547                        BT_UART_MSG_FRAME6SNIFFINTERVAL_POS,
 548                (BT_UART_MSG_FRAME6DISCOVERABLE_MSK & uart_msg->frame6) >>
 549                        BT_UART_MSG_FRAME6DISCOVERABLE_POS);
 550
 551        IWL_DEBUG_COEX(priv, "Sniff Activity = 0x%X, Page = "
 552                        "0x%X, Inquiry = 0x%X, Connectable = 0x%X\n",
 553                (BT_UART_MSG_FRAME7SNIFFACTIVITY_MSK & uart_msg->frame7) >>
 554                        BT_UART_MSG_FRAME7SNIFFACTIVITY_POS,
 555                (BT_UART_MSG_FRAME7PAGE_MSK & uart_msg->frame7) >>
 556                        BT_UART_MSG_FRAME7PAGE_POS,
 557                (BT_UART_MSG_FRAME7INQUIRY_MSK & uart_msg->frame7) >>
 558                        BT_UART_MSG_FRAME7INQUIRY_POS,
 559                (BT_UART_MSG_FRAME7CONNECTABLE_MSK & uart_msg->frame7) >>
 560                        BT_UART_MSG_FRAME7CONNECTABLE_POS);
 561}
 562
 563static bool iwlagn_set_kill_msk(struct iwl_priv *priv,
 564                                struct iwl_bt_uart_msg *uart_msg)
 565{
 566        bool need_update = false;
 567        u8 kill_msk = IWL_BT_KILL_REDUCE;
 568        static const __le32 bt_kill_ack_msg[3] = {
 569                IWLAGN_BT_KILL_ACK_MASK_DEFAULT,
 570                IWLAGN_BT_KILL_ACK_CTS_MASK_SCO,
 571                IWLAGN_BT_KILL_ACK_CTS_MASK_REDUCE};
 572        static const __le32 bt_kill_cts_msg[3] = {
 573                IWLAGN_BT_KILL_CTS_MASK_DEFAULT,
 574                IWLAGN_BT_KILL_ACK_CTS_MASK_SCO,
 575                IWLAGN_BT_KILL_ACK_CTS_MASK_REDUCE};
 576
 577        if (!priv->reduced_txpower)
 578                kill_msk = (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3)
 579                        ? IWL_BT_KILL_OVERRIDE : IWL_BT_KILL_DEFAULT;
 580        if (priv->kill_ack_mask != bt_kill_ack_msg[kill_msk] ||
 581            priv->kill_cts_mask != bt_kill_cts_msg[kill_msk]) {
 582                priv->bt_valid |= IWLAGN_BT_VALID_KILL_ACK_MASK;
 583                priv->kill_ack_mask = bt_kill_ack_msg[kill_msk];
 584                priv->bt_valid |= IWLAGN_BT_VALID_KILL_CTS_MASK;
 585                priv->kill_cts_mask = bt_kill_cts_msg[kill_msk];
 586                need_update = true;
 587        }
 588        return need_update;
 589}
 590
 591/*
 592 * Upon RSSI changes, sends a bt config command with following changes
 593 *  1. enable/disable "reduced control frames tx power
 594 *  2. update the "kill)ack_mask" and "kill_cts_mask"
 595 *
 596 * If "reduced tx power" is enabled, uCode shall
 597 *  1. ACK/Back/CTS rate shall reduced to 6Mbps
 598 *  2. not use duplciate 20/40MHz mode
 599 */
 600static bool iwlagn_fill_txpower_mode(struct iwl_priv *priv,
 601                                struct iwl_bt_uart_msg *uart_msg)
 602{
 603        bool need_update = false;
 604        struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
 605        int ave_rssi;
 606
 607        if (!ctx->vif || (ctx->vif->type != NL80211_IFTYPE_STATION)) {
 608                IWL_DEBUG_INFO(priv, "BSS ctx not active or not in sta mode\n");
 609                return false;
 610        }
 611
 612        ave_rssi = ieee80211_ave_rssi(ctx->vif);
 613        if (!ave_rssi) {
 614                /* no rssi data, no changes to reduce tx power */
 615                IWL_DEBUG_COEX(priv, "no rssi data available\n");
 616                return need_update;
 617        }
 618        if (!priv->reduced_txpower &&
 619            !iwl_is_associated(priv, IWL_RXON_CTX_PAN) &&
 620            (ave_rssi > BT_ENABLE_REDUCED_TXPOWER_THRESHOLD) &&
 621            (uart_msg->frame3 & (BT_UART_MSG_FRAME3ACL_MSK |
 622            BT_UART_MSG_FRAME3OBEX_MSK)) &&
 623            !(uart_msg->frame3 & (BT_UART_MSG_FRAME3SCOESCO_MSK |
 624            BT_UART_MSG_FRAME3SNIFF_MSK | BT_UART_MSG_FRAME3A2DP_MSK))) {
 625                /* enabling reduced tx power */
 626                priv->reduced_txpower = true;
 627                priv->bt_valid |= IWLAGN_BT_VALID_REDUCED_TX_PWR;
 628                need_update = true;
 629        } else if (priv->reduced_txpower &&
 630                   (iwl_is_associated(priv, IWL_RXON_CTX_PAN) ||
 631                   (ave_rssi < BT_DISABLE_REDUCED_TXPOWER_THRESHOLD) ||
 632                   (uart_msg->frame3 & (BT_UART_MSG_FRAME3SCOESCO_MSK |
 633                   BT_UART_MSG_FRAME3SNIFF_MSK | BT_UART_MSG_FRAME3A2DP_MSK)) ||
 634                   !(uart_msg->frame3 & (BT_UART_MSG_FRAME3ACL_MSK |
 635                   BT_UART_MSG_FRAME3OBEX_MSK)))) {
 636                /* disable reduced tx power */
 637                priv->reduced_txpower = false;
 638                priv->bt_valid |= IWLAGN_BT_VALID_REDUCED_TX_PWR;
 639                need_update = true;
 640        }
 641
 642        return need_update;
 643}
 644
 645static void iwlagn_bt_coex_profile_notif(struct iwl_priv *priv,
 646                                         struct iwl_rx_cmd_buffer *rxb)
 647{
 648        struct iwl_rx_packet *pkt = rxb_addr(rxb);
 649        struct iwl_bt_coex_profile_notif *coex = (void *)pkt->data;
 650        struct iwl_bt_uart_msg *uart_msg = &coex->last_bt_uart_msg;
 651
 652        if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) {
 653                /* bt coex disabled */
 654                return;
 655        }
 656
 657        IWL_DEBUG_COEX(priv, "BT Coex notification:\n");
 658        IWL_DEBUG_COEX(priv, "    status: %d\n", coex->bt_status);
 659        IWL_DEBUG_COEX(priv, "    traffic load: %d\n", coex->bt_traffic_load);
 660        IWL_DEBUG_COEX(priv, "    CI compliance: %d\n",
 661                        coex->bt_ci_compliance);
 662        iwlagn_print_uartmsg(priv, uart_msg);
 663
 664        priv->last_bt_traffic_load = priv->bt_traffic_load;
 665        priv->bt_is_sco = iwlagn_bt_traffic_is_sco(uart_msg);
 666
 667        if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
 668                if (priv->bt_status != coex->bt_status ||
 669                    priv->last_bt_traffic_load != coex->bt_traffic_load) {
 670                        if (coex->bt_status) {
 671                                /* BT on */
 672                                if (!priv->bt_ch_announce)
 673                                        priv->bt_traffic_load =
 674                                                IWL_BT_COEX_TRAFFIC_LOAD_HIGH;
 675                                else
 676                                        priv->bt_traffic_load =
 677                                                coex->bt_traffic_load;
 678                        } else {
 679                                /* BT off */
 680                                priv->bt_traffic_load =
 681                                        IWL_BT_COEX_TRAFFIC_LOAD_NONE;
 682                        }
 683                        priv->bt_status = coex->bt_status;
 684                        queue_work(priv->workqueue,
 685                                   &priv->bt_traffic_change_work);
 686                }
 687        }
 688
 689        /* schedule to send runtime bt_config */
 690        /* check reduce power before change ack/cts kill mask */
 691        if (iwlagn_fill_txpower_mode(priv, uart_msg) ||
 692            iwlagn_set_kill_msk(priv, uart_msg))
 693                queue_work(priv->workqueue, &priv->bt_runtime_config);
 694
 695
 696        /* FIXME: based on notification, adjust the prio_boost */
 697
 698        priv->bt_ci_compliance = coex->bt_ci_compliance;
 699}
 700
 701void iwlagn_bt_rx_handler_setup(struct iwl_priv *priv)
 702{
 703        priv->rx_handlers[REPLY_BT_COEX_PROFILE_NOTIF] =
 704                iwlagn_bt_coex_profile_notif;
 705}
 706
 707void iwlagn_bt_setup_deferred_work(struct iwl_priv *priv)
 708{
 709        INIT_WORK(&priv->bt_traffic_change_work,
 710                  iwlagn_bt_traffic_change_work);
 711}
 712
 713void iwlagn_bt_cancel_deferred_work(struct iwl_priv *priv)
 714{
 715        cancel_work_sync(&priv->bt_traffic_change_work);
 716}
 717
 718static bool is_single_rx_stream(struct iwl_priv *priv)
 719{
 720        return priv->current_ht_config.smps == IEEE80211_SMPS_STATIC ||
 721               priv->current_ht_config.single_chain_sufficient;
 722}
 723
 724#define IWL_NUM_RX_CHAINS_MULTIPLE      3
 725#define IWL_NUM_RX_CHAINS_SINGLE        2
 726#define IWL_NUM_IDLE_CHAINS_DUAL        2
 727#define IWL_NUM_IDLE_CHAINS_SINGLE      1
 728
 729/*
 730 * Determine how many receiver/antenna chains to use.
 731 *
 732 * More provides better reception via diversity.  Fewer saves power
 733 * at the expense of throughput, but only when not in powersave to
 734 * start with.
 735 *
 736 * MIMO (dual stream) requires at least 2, but works better with 3.
 737 * This does not determine *which* chains to use, just how many.
 738 */
 739static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
 740{
 741        if (priv->lib->bt_params &&
 742            priv->lib->bt_params->advanced_bt_coexist &&
 743            (priv->bt_full_concurrent ||
 744             priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) {
 745                /*
 746                 * only use chain 'A' in bt high traffic load or
 747                 * full concurrency mode
 748                 */
 749                return IWL_NUM_RX_CHAINS_SINGLE;
 750        }
 751        /* # of Rx chains to use when expecting MIMO. */
 752        if (is_single_rx_stream(priv))
 753                return IWL_NUM_RX_CHAINS_SINGLE;
 754        else
 755                return IWL_NUM_RX_CHAINS_MULTIPLE;
 756}
 757
 758/*
 759 * When we are in power saving mode, unless device support spatial
 760 * multiplexing power save, use the active count for rx chain count.
 761 */
 762static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
 763{
 764        /* # Rx chains when idling, depending on SMPS mode */
 765        switch (priv->current_ht_config.smps) {
 766        case IEEE80211_SMPS_STATIC:
 767        case IEEE80211_SMPS_DYNAMIC:
 768                return IWL_NUM_IDLE_CHAINS_SINGLE;
 769        case IEEE80211_SMPS_AUTOMATIC:
 770        case IEEE80211_SMPS_OFF:
 771                return active_cnt;
 772        default:
 773                WARN(1, "invalid SMPS mode %d",
 774                     priv->current_ht_config.smps);
 775                return active_cnt;
 776        }
 777}
 778
 779/* up to 4 chains */
 780static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
 781{
 782        u8 res;
 783        res = (chain_bitmap & BIT(0)) >> 0;
 784        res += (chain_bitmap & BIT(1)) >> 1;
 785        res += (chain_bitmap & BIT(2)) >> 2;
 786        res += (chain_bitmap & BIT(3)) >> 3;
 787        return res;
 788}
 789
 790/**
 791 * iwlagn_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
 792 *
 793 * Selects how many and which Rx receivers/antennas/chains to use.
 794 * This should not be used for scan command ... it puts data in wrong place.
 795 */
 796void iwlagn_set_rxon_chain(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
 797{
 798        bool is_single = is_single_rx_stream(priv);
 799        bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
 800        u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
 801        u32 active_chains;
 802        u16 rx_chain;
 803
 804        /* Tell uCode which antennas are actually connected.
 805         * Before first association, we assume all antennas are connected.
 806         * Just after first association, iwl_chain_noise_calibration()
 807         *    checks which antennas actually *are* connected. */
 808        if (priv->chain_noise_data.active_chains)
 809                active_chains = priv->chain_noise_data.active_chains;
 810        else
 811                active_chains = priv->nvm_data->valid_rx_ant;
 812
 813        if (priv->lib->bt_params &&
 814            priv->lib->bt_params->advanced_bt_coexist &&
 815            (priv->bt_full_concurrent ||
 816             priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) {
 817                /*
 818                 * only use chain 'A' in bt high traffic load or
 819                 * full concurrency mode
 820                 */
 821                active_chains = first_antenna(active_chains);
 822        }
 823
 824        rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
 825
 826        /* How many receivers should we use? */
 827        active_rx_cnt = iwl_get_active_rx_chain_count(priv);
 828        idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
 829
 830
 831        /* correct rx chain count according hw settings
 832         * and chain noise calibration
 833         */
 834        valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
 835        if (valid_rx_cnt < active_rx_cnt)
 836                active_rx_cnt = valid_rx_cnt;
 837
 838        if (valid_rx_cnt < idle_rx_cnt)
 839                idle_rx_cnt = valid_rx_cnt;
 840
 841        rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
 842        rx_chain |= idle_rx_cnt  << RXON_RX_CHAIN_CNT_POS;
 843
 844        ctx->staging.rx_chain = cpu_to_le16(rx_chain);
 845
 846        if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
 847                ctx->staging.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
 848        else
 849                ctx->staging.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
 850
 851        IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
 852                        ctx->staging.rx_chain,
 853                        active_rx_cnt, idle_rx_cnt);
 854
 855        WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
 856                active_rx_cnt < idle_rx_cnt);
 857}
 858
 859u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant, u8 valid)
 860{
 861        int i;
 862        u8 ind = ant;
 863
 864        if (priv->band == NL80211_BAND_2GHZ &&
 865            priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)
 866                return 0;
 867
 868        for (i = 0; i < RATE_ANT_NUM - 1; i++) {
 869                ind = (ind + 1) < RATE_ANT_NUM ?  ind + 1 : 0;
 870                if (valid & BIT(ind))
 871                        return ind;
 872        }
 873        return ant;
 874}
 875
 876#ifdef CONFIG_PM_SLEEP
 877static void iwlagn_convert_p1k(u16 *p1k, __le16 *out)
 878{
 879        int i;
 880
 881        for (i = 0; i < IWLAGN_P1K_SIZE; i++)
 882                out[i] = cpu_to_le16(p1k[i]);
 883}
 884
 885struct wowlan_key_data {
 886        struct iwl_rxon_context *ctx;
 887        struct iwlagn_wowlan_rsc_tsc_params_cmd *rsc_tsc;
 888        struct iwlagn_wowlan_tkip_params_cmd *tkip;
 889        const u8 *bssid;
 890        bool error, use_rsc_tsc, use_tkip;
 891};
 892
 893
 894static void iwlagn_wowlan_program_keys(struct ieee80211_hw *hw,
 895                               struct ieee80211_vif *vif,
 896                               struct ieee80211_sta *sta,
 897                               struct ieee80211_key_conf *key,
 898                               void *_data)
 899{
 900        struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
 901        struct wowlan_key_data *data = _data;
 902        struct iwl_rxon_context *ctx = data->ctx;
 903        struct aes_sc *aes_sc, *aes_tx_sc = NULL;
 904        struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
 905        struct iwlagn_p1k_cache *rx_p1ks;
 906        u8 *rx_mic_key;
 907        struct ieee80211_key_seq seq;
 908        u32 cur_rx_iv32 = 0;
 909        u16 p1k[IWLAGN_P1K_SIZE];
 910        int ret, i;
 911
 912        mutex_lock(&priv->mutex);
 913
 914        if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 915             key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
 916             !sta && !ctx->key_mapping_keys)
 917                ret = iwl_set_default_wep_key(priv, ctx, key);
 918        else
 919                ret = iwl_set_dynamic_key(priv, ctx, key, sta);
 920
 921        if (ret) {
 922                IWL_ERR(priv, "Error setting key during suspend!\n");
 923                data->error = true;
 924        }
 925
 926        switch (key->cipher) {
 927        case WLAN_CIPHER_SUITE_TKIP:
 928                if (sta) {
 929                        u64 pn64;
 930
 931                        tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
 932                        tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
 933
 934                        rx_p1ks = data->tkip->rx_uni;
 935
 936                        pn64 = atomic64_read(&key->tx_pn);
 937                        tkip_tx_sc->iv16 = cpu_to_le16(TKIP_PN_TO_IV16(pn64));
 938                        tkip_tx_sc->iv32 = cpu_to_le32(TKIP_PN_TO_IV32(pn64));
 939
 940                        ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k);
 941                        iwlagn_convert_p1k(p1k, data->tkip->tx.p1k);
 942
 943                        memcpy(data->tkip->mic_keys.tx,
 944                               &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
 945                               IWLAGN_MIC_KEY_SIZE);
 946
 947                        rx_mic_key = data->tkip->mic_keys.rx_unicast;
 948                } else {
 949                        tkip_sc =
 950                                data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
 951                        rx_p1ks = data->tkip->rx_multi;
 952                        rx_mic_key = data->tkip->mic_keys.rx_mcast;
 953                }
 954
 955                /*
 956                 * For non-QoS this relies on the fact that both the uCode and
 957                 * mac80211 use TID 0 (as they need to to avoid replay attacks)
 958                 * for checking the IV in the frames.
 959                 */
 960                for (i = 0; i < IWLAGN_NUM_RSC; i++) {
 961                        ieee80211_get_key_rx_seq(key, i, &seq);
 962                        tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
 963                        tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
 964                        /* wrapping isn't allowed, AP must rekey */
 965                        if (seq.tkip.iv32 > cur_rx_iv32)
 966                                cur_rx_iv32 = seq.tkip.iv32;
 967                }
 968
 969                ieee80211_get_tkip_rx_p1k(key, data->bssid, cur_rx_iv32, p1k);
 970                iwlagn_convert_p1k(p1k, rx_p1ks[0].p1k);
 971                ieee80211_get_tkip_rx_p1k(key, data->bssid,
 972                                          cur_rx_iv32 + 1, p1k);
 973                iwlagn_convert_p1k(p1k, rx_p1ks[1].p1k);
 974
 975                memcpy(rx_mic_key,
 976                       &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
 977                       IWLAGN_MIC_KEY_SIZE);
 978
 979                data->use_tkip = true;
 980                data->use_rsc_tsc = true;
 981                break;
 982        case WLAN_CIPHER_SUITE_CCMP:
 983                if (sta) {
 984                        u64 pn64;
 985
 986                        aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
 987                        aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
 988
 989                        pn64 = atomic64_read(&key->tx_pn);
 990                        aes_tx_sc->pn = cpu_to_le64(pn64);
 991                } else
 992                        aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
 993
 994                /*
 995                 * For non-QoS this relies on the fact that both the uCode and
 996                 * mac80211 use TID 0 for checking the IV in the frames.
 997                 */
 998                for (i = 0; i < IWLAGN_NUM_RSC; i++) {
 999                        u8 *pn = seq.ccmp.pn;
1000
1001                        ieee80211_get_key_rx_seq(key, i, &seq);
1002                        aes_sc[i].pn = cpu_to_le64(
1003                                        (u64)pn[5] |
1004                                        ((u64)pn[4] << 8) |
1005                                        ((u64)pn[3] << 16) |
1006                                        ((u64)pn[2] << 24) |
1007                                        ((u64)pn[1] << 32) |
1008                                        ((u64)pn[0] << 40));
1009                }
1010                data->use_rsc_tsc = true;
1011                break;
1012        }
1013
1014        mutex_unlock(&priv->mutex);
1015}
1016
1017int iwlagn_send_patterns(struct iwl_priv *priv,
1018                        struct cfg80211_wowlan *wowlan)
1019{
1020        struct iwlagn_wowlan_patterns_cmd *pattern_cmd;
1021        struct iwl_host_cmd cmd = {
1022                .id = REPLY_WOWLAN_PATTERNS,
1023                .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1024        };
1025        int i, err;
1026
1027        if (!wowlan->n_patterns)
1028                return 0;
1029
1030        cmd.len[0] = sizeof(*pattern_cmd) +
1031                wowlan->n_patterns * sizeof(struct iwlagn_wowlan_pattern);
1032
1033        pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
1034        if (!pattern_cmd)
1035                return -ENOMEM;
1036
1037        pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
1038
1039        for (i = 0; i < wowlan->n_patterns; i++) {
1040                int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
1041
1042                memcpy(&pattern_cmd->patterns[i].mask,
1043                        wowlan->patterns[i].mask, mask_len);
1044                memcpy(&pattern_cmd->patterns[i].pattern,
1045                        wowlan->patterns[i].pattern,
1046                        wowlan->patterns[i].pattern_len);
1047                pattern_cmd->patterns[i].mask_size = mask_len;
1048                pattern_cmd->patterns[i].pattern_size =
1049                        wowlan->patterns[i].pattern_len;
1050        }
1051
1052        cmd.data[0] = pattern_cmd;
1053        err = iwl_dvm_send_cmd(priv, &cmd);
1054        kfree(pattern_cmd);
1055        return err;
1056}
1057
1058int iwlagn_suspend(struct iwl_priv *priv, struct cfg80211_wowlan *wowlan)
1059{
1060        struct iwlagn_wowlan_wakeup_filter_cmd wakeup_filter_cmd;
1061        struct iwl_rxon_cmd rxon;
1062        struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1063        struct iwlagn_wowlan_kek_kck_material_cmd kek_kck_cmd;
1064        struct iwlagn_wowlan_tkip_params_cmd tkip_cmd = {};
1065        struct iwlagn_d3_config_cmd d3_cfg_cmd = {
1066                /*
1067                 * Program the minimum sleep time to 10 seconds, as many
1068                 * platforms have issues processing a wakeup signal while
1069                 * still being in the process of suspending.
1070                 */
1071                .min_sleep_time = cpu_to_le32(10 * 1000 * 1000),
1072        };
1073        struct wowlan_key_data key_data = {
1074                .ctx = ctx,
1075                .bssid = ctx->active.bssid_addr,
1076                .use_rsc_tsc = false,
1077                .tkip = &tkip_cmd,
1078                .use_tkip = false,
1079        };
1080        int ret, i;
1081        u16 seq;
1082
1083        key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
1084        if (!key_data.rsc_tsc)
1085                return -ENOMEM;
1086
1087        memset(&wakeup_filter_cmd, 0, sizeof(wakeup_filter_cmd));
1088
1089        /*
1090         * We know the last used seqno, and the uCode expects to know that
1091         * one, it will increment before TX.
1092         */
1093        seq = le16_to_cpu(priv->last_seq_ctl) & IEEE80211_SCTL_SEQ;
1094        wakeup_filter_cmd.non_qos_seq = cpu_to_le16(seq);
1095
1096        /*
1097         * For QoS counters, we store the one to use next, so subtract 0x10
1098         * since the uCode will add 0x10 before using the value.
1099         */
1100        for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1101                seq = priv->tid_data[IWL_AP_ID][i].seq_number;
1102                seq -= 0x10;
1103                wakeup_filter_cmd.qos_seq[i] = cpu_to_le16(seq);
1104        }
1105
1106        if (wowlan->disconnect)
1107                wakeup_filter_cmd.enabled |=
1108                        cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_BEACON_MISS |
1109                                    IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE);
1110        if (wowlan->magic_pkt)
1111                wakeup_filter_cmd.enabled |=
1112                        cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET);
1113        if (wowlan->gtk_rekey_failure)
1114                wakeup_filter_cmd.enabled |=
1115                        cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
1116        if (wowlan->eap_identity_req)
1117                wakeup_filter_cmd.enabled |=
1118                        cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ);
1119        if (wowlan->four_way_handshake)
1120                wakeup_filter_cmd.enabled |=
1121                        cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
1122        if (wowlan->n_patterns)
1123                wakeup_filter_cmd.enabled |=
1124                        cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH);
1125
1126        if (wowlan->rfkill_release)
1127                d3_cfg_cmd.wakeup_flags |=
1128                        cpu_to_le32(IWLAGN_D3_WAKEUP_RFKILL);
1129
1130        iwl_scan_cancel_timeout(priv, 200);
1131
1132        memcpy(&rxon, &ctx->active, sizeof(rxon));
1133
1134        priv->ucode_loaded = false;
1135        iwl_trans_stop_device(priv->trans);
1136        ret = iwl_trans_start_hw(priv->trans);
1137        if (ret)
1138                goto out;
1139
1140        priv->wowlan = true;
1141
1142        ret = iwl_load_ucode_wait_alive(priv, IWL_UCODE_WOWLAN);
1143        if (ret)
1144                goto out;
1145
1146        /* now configure WoWLAN ucode */
1147        ret = iwl_alive_start(priv);
1148        if (ret)
1149                goto out;
1150
1151        memcpy(&ctx->staging, &rxon, sizeof(rxon));
1152        ret = iwlagn_commit_rxon(priv, ctx);
1153        if (ret)
1154                goto out;
1155
1156        ret = iwl_power_update_mode(priv, true);
1157        if (ret)
1158                goto out;
1159
1160        if (!iwlwifi_mod_params.sw_crypto) {
1161                /* mark all keys clear */
1162                priv->ucode_key_table = 0;
1163                ctx->key_mapping_keys = 0;
1164
1165                /*
1166                 * This needs to be unlocked due to lock ordering
1167                 * constraints. Since we're in the suspend path
1168                 * that isn't really a problem though.
1169                 */
1170                mutex_unlock(&priv->mutex);
1171                ieee80211_iter_keys(priv->hw, ctx->vif,
1172                                    iwlagn_wowlan_program_keys,
1173                                    &key_data);
1174                mutex_lock(&priv->mutex);
1175                if (key_data.error) {
1176                        ret = -EIO;
1177                        goto out;
1178                }
1179
1180                if (key_data.use_rsc_tsc) {
1181                        struct iwl_host_cmd rsc_tsc_cmd = {
1182                                .id = REPLY_WOWLAN_TSC_RSC_PARAMS,
1183                                .data[0] = key_data.rsc_tsc,
1184                                .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1185                                .len[0] = sizeof(*key_data.rsc_tsc),
1186                        };
1187
1188                        ret = iwl_dvm_send_cmd(priv, &rsc_tsc_cmd);
1189                        if (ret)
1190                                goto out;
1191                }
1192
1193                if (key_data.use_tkip) {
1194                        ret = iwl_dvm_send_cmd_pdu(priv,
1195                                                 REPLY_WOWLAN_TKIP_PARAMS,
1196                                                 0, sizeof(tkip_cmd),
1197                                                 &tkip_cmd);
1198                        if (ret)
1199                                goto out;
1200                }
1201
1202                if (priv->have_rekey_data) {
1203                        memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
1204                        memcpy(kek_kck_cmd.kck, priv->kck, NL80211_KCK_LEN);
1205                        kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
1206                        memcpy(kek_kck_cmd.kek, priv->kek, NL80211_KEK_LEN);
1207                        kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
1208                        kek_kck_cmd.replay_ctr = priv->replay_ctr;
1209
1210                        ret = iwl_dvm_send_cmd_pdu(priv,
1211                                                 REPLY_WOWLAN_KEK_KCK_MATERIAL,
1212                                                 0, sizeof(kek_kck_cmd),
1213                                                 &kek_kck_cmd);
1214                        if (ret)
1215                                goto out;
1216                }
1217        }
1218
1219        ret = iwl_dvm_send_cmd_pdu(priv, REPLY_D3_CONFIG, 0,
1220                                     sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1221        if (ret)
1222                goto out;
1223
1224        ret = iwl_dvm_send_cmd_pdu(priv, REPLY_WOWLAN_WAKEUP_FILTER,
1225                                 0, sizeof(wakeup_filter_cmd),
1226                                 &wakeup_filter_cmd);
1227        if (ret)
1228                goto out;
1229
1230        ret = iwlagn_send_patterns(priv, wowlan);
1231 out:
1232        kfree(key_data.rsc_tsc);
1233        return ret;
1234}
1235#endif
1236
1237int iwl_dvm_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
1238{
1239        if (iwl_is_rfkill(priv) || iwl_is_ctkill(priv)) {
1240                IWL_WARN(priv, "Not sending command - %s KILL\n",
1241                         iwl_is_rfkill(priv) ? "RF" : "CT");
1242                return -EIO;
1243        }
1244
1245        if (test_bit(STATUS_FW_ERROR, &priv->status)) {
1246                IWL_ERR(priv, "Command %s failed: FW Error\n",
1247                        iwl_get_cmd_string(priv->trans, cmd->id));
1248                return -EIO;
1249        }
1250
1251        /*
1252         * This can happen upon FW ASSERT: we clear the STATUS_FW_ERROR flag
1253         * in iwl_down but cancel the workers only later.
1254         */
1255        if (!priv->ucode_loaded) {
1256                IWL_ERR(priv, "Fw not loaded - dropping CMD: %x\n", cmd->id);
1257                return -EIO;
1258        }
1259
1260        /*
1261         * Synchronous commands from this op-mode must hold
1262         * the mutex, this ensures we don't try to send two
1263         * (or more) synchronous commands at a time.
1264         */
1265        if (!(cmd->flags & CMD_ASYNC))
1266                lockdep_assert_held(&priv->mutex);
1267
1268        return iwl_trans_send_cmd(priv->trans, cmd);
1269}
1270
1271int iwl_dvm_send_cmd_pdu(struct iwl_priv *priv, u8 id,
1272                         u32 flags, u16 len, const void *data)
1273{
1274        struct iwl_host_cmd cmd = {
1275                .id = id,
1276                .len = { len, },
1277                .data = { data, },
1278                .flags = flags,
1279        };
1280
1281        return iwl_dvm_send_cmd(priv, &cmd);
1282}
1283