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 <ilw@linux.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 ieee80211_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 == IEEE80211_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 flush_cmd; 141 struct iwl_host_cmd cmd = { 142 .id = REPLY_TXFIFO_FLUSH, 143 .len = { sizeof(struct iwl_txfifo_flush_cmd), }, 144 .data = { &flush_cmd, }, 145 }; 146 147 memset(&flush_cmd, 0, sizeof(flush_cmd)); 148 149 flush_cmd.queue_control = IWL_SCD_VO_MSK | IWL_SCD_VI_MSK | 150 IWL_SCD_BE_MSK | IWL_SCD_BK_MSK | 151 IWL_SCD_MGMT_MSK; 152 if ((priv->valid_contexts != BIT(IWL_RXON_CTX_BSS))) 153 flush_cmd.queue_control |= IWL_PAN_SCD_VO_MSK | 154 IWL_PAN_SCD_VI_MSK | 155 IWL_PAN_SCD_BE_MSK | 156 IWL_PAN_SCD_BK_MSK | 157 IWL_PAN_SCD_MGMT_MSK | 158 IWL_PAN_SCD_MULTICAST_MSK; 159 160 if (priv->nvm_data->sku_cap_11n_enable) 161 flush_cmd.queue_control |= IWL_AGG_TX_QUEUE_MSK; 162 163 if (scd_q_msk) 164 flush_cmd.queue_control = cpu_to_le32(scd_q_msk); 165 166 IWL_DEBUG_INFO(priv, "queue control: 0x%x\n", 167 flush_cmd.queue_control); 168 flush_cmd.flush_control = cpu_to_le16(IWL_DROP_ALL); 169 170 return iwl_dvm_send_cmd(priv, &cmd); 171} 172 173void iwlagn_dev_txfifo_flush(struct iwl_priv *priv) 174{ 175 mutex_lock(&priv->mutex); 176 ieee80211_stop_queues(priv->hw); 177 if (iwlagn_txfifo_flush(priv, 0)) { 178 IWL_ERR(priv, "flush request fail\n"); 179 goto done; 180 } 181 IWL_DEBUG_INFO(priv, "wait transmit/flush all frames\n"); 182 iwl_trans_wait_tx_queue_empty(priv->trans, 0xffffffff); 183done: 184 ieee80211_wake_queues(priv->hw); 185 mutex_unlock(&priv->mutex); 186} 187 188/* 189 * BT coex 190 */ 191/* Notmal TDM */ 192static const __le32 iwlagn_def_3w_lookup[IWLAGN_BT_DECISION_LUT_SIZE] = { 193 cpu_to_le32(0xaaaaaaaa), 194 cpu_to_le32(0xaaaaaaaa), 195 cpu_to_le32(0xaeaaaaaa), 196 cpu_to_le32(0xaaaaaaaa), 197 cpu_to_le32(0xcc00ff28), 198 cpu_to_le32(0x0000aaaa), 199 cpu_to_le32(0xcc00aaaa), 200 cpu_to_le32(0x0000aaaa), 201 cpu_to_le32(0xc0004000), 202 cpu_to_le32(0x00004000), 203 cpu_to_le32(0xf0005000), 204 cpu_to_le32(0xf0005000), 205}; 206 207 208/* Loose Coex */ 209static const __le32 iwlagn_loose_lookup[IWLAGN_BT_DECISION_LUT_SIZE] = { 210 cpu_to_le32(0xaaaaaaaa), 211 cpu_to_le32(0xaaaaaaaa), 212 cpu_to_le32(0xaeaaaaaa), 213 cpu_to_le32(0xaaaaaaaa), 214 cpu_to_le32(0xcc00ff28), 215 cpu_to_le32(0x0000aaaa), 216 cpu_to_le32(0xcc00aaaa), 217 cpu_to_le32(0x0000aaaa), 218 cpu_to_le32(0x00000000), 219 cpu_to_le32(0x00000000), 220 cpu_to_le32(0xf0005000), 221 cpu_to_le32(0xf0005000), 222}; 223 224/* Full concurrency */ 225static const __le32 iwlagn_concurrent_lookup[IWLAGN_BT_DECISION_LUT_SIZE] = { 226 cpu_to_le32(0xaaaaaaaa), 227 cpu_to_le32(0xaaaaaaaa), 228 cpu_to_le32(0xaaaaaaaa), 229 cpu_to_le32(0xaaaaaaaa), 230 cpu_to_le32(0xaaaaaaaa), 231 cpu_to_le32(0xaaaaaaaa), 232 cpu_to_le32(0xaaaaaaaa), 233 cpu_to_le32(0xaaaaaaaa), 234 cpu_to_le32(0x00000000), 235 cpu_to_le32(0x00000000), 236 cpu_to_le32(0x00000000), 237 cpu_to_le32(0x00000000), 238}; 239 240void iwlagn_send_advance_bt_config(struct iwl_priv *priv) 241{ 242 struct iwl_basic_bt_cmd basic = { 243 .max_kill = IWLAGN_BT_MAX_KILL_DEFAULT, 244 .bt3_timer_t7_value = IWLAGN_BT3_T7_DEFAULT, 245 .bt3_prio_sample_time = IWLAGN_BT3_PRIO_SAMPLE_DEFAULT, 246 .bt3_timer_t2_value = IWLAGN_BT3_T2_DEFAULT, 247 }; 248 struct iwl_bt_cmd_v1 bt_cmd_v1; 249 struct iwl_bt_cmd_v2 bt_cmd_v2; 250 int ret; 251 252 BUILD_BUG_ON(sizeof(iwlagn_def_3w_lookup) != 253 sizeof(basic.bt3_lookup_table)); 254 255 if (priv->lib->bt_params) { 256 /* 257 * newer generation of devices (2000 series and newer) 258 * use the version 2 of the bt command 259 * we need to make sure sending the host command 260 * with correct data structure to avoid uCode assert 261 */ 262 if (priv->lib->bt_params->bt_session_2) { 263 bt_cmd_v2.prio_boost = cpu_to_le32( 264 priv->lib->bt_params->bt_prio_boost); 265 bt_cmd_v2.tx_prio_boost = 0; 266 bt_cmd_v2.rx_prio_boost = 0; 267 } else { 268 /* older version only has 8 bits */ 269 WARN_ON(priv->lib->bt_params->bt_prio_boost & ~0xFF); 270 bt_cmd_v1.prio_boost = 271 priv->lib->bt_params->bt_prio_boost; 272 bt_cmd_v1.tx_prio_boost = 0; 273 bt_cmd_v1.rx_prio_boost = 0; 274 } 275 } else { 276 IWL_ERR(priv, "failed to construct BT Coex Config\n"); 277 return; 278 } 279 280 /* 281 * Possible situations when BT needs to take over for receive, 282 * at the same time where STA needs to response to AP's frame(s), 283 * reduce the tx power of the required response frames, by that, 284 * allow the concurrent BT receive & WiFi transmit 285 * (BT - ANT A, WiFi -ANT B), without interference to one another 286 * 287 * Reduced tx power apply to control frames only (ACK/Back/CTS) 288 * when indicated by the BT config command 289 */ 290 basic.kill_ack_mask = priv->kill_ack_mask; 291 basic.kill_cts_mask = priv->kill_cts_mask; 292 if (priv->reduced_txpower) 293 basic.reduce_txpower = IWLAGN_BT_REDUCED_TX_PWR; 294 basic.valid = priv->bt_valid; 295 296 /* 297 * Configure BT coex mode to "no coexistence" when the 298 * user disabled BT coexistence, we have no interface 299 * (might be in monitor mode), or the interface is in 300 * IBSS mode (no proper uCode support for coex then). 301 */ 302 if (!iwlwifi_mod_params.bt_coex_active || 303 priv->iw_mode == NL80211_IFTYPE_ADHOC) { 304 basic.flags = IWLAGN_BT_FLAG_COEX_MODE_DISABLED; 305 } else { 306 basic.flags = IWLAGN_BT_FLAG_COEX_MODE_3W << 307 IWLAGN_BT_FLAG_COEX_MODE_SHIFT; 308 309 if (!priv->bt_enable_pspoll) 310 basic.flags |= IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE; 311 else 312 basic.flags &= ~IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE; 313 314 if (priv->bt_ch_announce) 315 basic.flags |= IWLAGN_BT_FLAG_CHANNEL_INHIBITION; 316 IWL_DEBUG_COEX(priv, "BT coex flag: 0X%x\n", basic.flags); 317 } 318 priv->bt_enable_flag = basic.flags; 319 if (priv->bt_full_concurrent) 320 memcpy(basic.bt3_lookup_table, iwlagn_concurrent_lookup, 321 sizeof(iwlagn_concurrent_lookup)); 322 else 323 memcpy(basic.bt3_lookup_table, iwlagn_def_3w_lookup, 324 sizeof(iwlagn_def_3w_lookup)); 325 326 IWL_DEBUG_COEX(priv, "BT coex %s in %s mode\n", 327 basic.flags ? "active" : "disabled", 328 priv->bt_full_concurrent ? 329 "full concurrency" : "3-wire"); 330 331 if (priv->lib->bt_params->bt_session_2) { 332 memcpy(&bt_cmd_v2.basic, &basic, 333 sizeof(basic)); 334 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG, 335 0, sizeof(bt_cmd_v2), &bt_cmd_v2); 336 } else { 337 memcpy(&bt_cmd_v1.basic, &basic, 338 sizeof(basic)); 339 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG, 340 0, sizeof(bt_cmd_v1), &bt_cmd_v1); 341 } 342 if (ret) 343 IWL_ERR(priv, "failed to send BT Coex Config\n"); 344 345} 346 347void iwlagn_bt_adjust_rssi_monitor(struct iwl_priv *priv, bool rssi_ena) 348{ 349 struct iwl_rxon_context *ctx, *found_ctx = NULL; 350 bool found_ap = false; 351 352 lockdep_assert_held(&priv->mutex); 353 354 /* Check whether AP or GO mode is active. */ 355 if (rssi_ena) { 356 for_each_context(priv, ctx) { 357 if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_AP && 358 iwl_is_associated_ctx(ctx)) { 359 found_ap = true; 360 break; 361 } 362 } 363 } 364 365 /* 366 * If disable was received or If GO/AP mode, disable RSSI 367 * measurements. 368 */ 369 if (!rssi_ena || found_ap) { 370 if (priv->cur_rssi_ctx) { 371 ctx = priv->cur_rssi_ctx; 372 ieee80211_disable_rssi_reports(ctx->vif); 373 priv->cur_rssi_ctx = NULL; 374 } 375 return; 376 } 377 378 /* 379 * If rssi measurements need to be enabled, consider all cases now. 380 * Figure out how many contexts are active. 381 */ 382 for_each_context(priv, ctx) { 383 if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION && 384 iwl_is_associated_ctx(ctx)) { 385 found_ctx = ctx; 386 break; 387 } 388 } 389 390 /* 391 * rssi monitor already enabled for the correct interface...nothing 392 * to do. 393 */ 394 if (found_ctx == priv->cur_rssi_ctx) 395 return; 396 397 /* 398 * Figure out if rssi monitor is currently enabled, and needs 399 * to be changed. If rssi monitor is already enabled, disable 400 * it first else just enable rssi measurements on the 401 * interface found above. 402 */ 403 if (priv->cur_rssi_ctx) { 404 ctx = priv->cur_rssi_ctx; 405 if (ctx->vif) 406 ieee80211_disable_rssi_reports(ctx->vif); 407 } 408 409 priv->cur_rssi_ctx = found_ctx; 410 411 if (!found_ctx) 412 return; 413 414 ieee80211_enable_rssi_reports(found_ctx->vif, 415 IWLAGN_BT_PSP_MIN_RSSI_THRESHOLD, 416 IWLAGN_BT_PSP_MAX_RSSI_THRESHOLD); 417} 418 419static bool iwlagn_bt_traffic_is_sco(struct iwl_bt_uart_msg *uart_msg) 420{ 421 return BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3 >> 422 BT_UART_MSG_FRAME3SCOESCO_POS; 423} 424 425static void iwlagn_bt_traffic_change_work(struct work_struct *work) 426{ 427 struct iwl_priv *priv = 428 container_of(work, struct iwl_priv, bt_traffic_change_work); 429 struct iwl_rxon_context *ctx; 430 int smps_request = -1; 431 432 if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) { 433 /* bt coex disabled */ 434 return; 435 } 436 437 /* 438 * Note: bt_traffic_load can be overridden by scan complete and 439 * coex profile notifications. Ignore that since only bad consequence 440 * can be not matching debug print with actual state. 441 */ 442 IWL_DEBUG_COEX(priv, "BT traffic load changes: %d\n", 443 priv->bt_traffic_load); 444 445 switch (priv->bt_traffic_load) { 446 case IWL_BT_COEX_TRAFFIC_LOAD_NONE: 447 if (priv->bt_status) 448 smps_request = IEEE80211_SMPS_DYNAMIC; 449 else 450 smps_request = IEEE80211_SMPS_AUTOMATIC; 451 break; 452 case IWL_BT_COEX_TRAFFIC_LOAD_LOW: 453 smps_request = IEEE80211_SMPS_DYNAMIC; 454 break; 455 case IWL_BT_COEX_TRAFFIC_LOAD_HIGH: 456 case IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS: 457 smps_request = IEEE80211_SMPS_STATIC; 458 break; 459 default: 460 IWL_ERR(priv, "Invalid BT traffic load: %d\n", 461 priv->bt_traffic_load); 462 break; 463 } 464 465 mutex_lock(&priv->mutex); 466 467 /* 468 * We can not send command to firmware while scanning. When the scan 469 * complete we will schedule this work again. We do check with mutex 470 * locked to prevent new scan request to arrive. We do not check 471 * STATUS_SCANNING to avoid race when queue_work two times from 472 * different notifications, but quit and not perform any work at all. 473 */ 474 if (test_bit(STATUS_SCAN_HW, &priv->status)) 475 goto out; 476 477 iwl_update_chain_flags(priv); 478 479 if (smps_request != -1) { 480 priv->current_ht_config.smps = smps_request; 481 for_each_context(priv, ctx) { 482 if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION) 483 ieee80211_request_smps(ctx->vif, smps_request); 484 } 485 } 486 487 /* 488 * Dynamic PS poll related functionality. Adjust RSSI measurements if 489 * necessary. 490 */ 491 iwlagn_bt_coex_rssi_monitor(priv); 492out: 493 mutex_unlock(&priv->mutex); 494} 495 496/* 497 * If BT sco traffic, and RSSI monitor is enabled, move measurements to the 498 * correct interface or disable it if this is the last interface to be 499 * removed. 500 */ 501void iwlagn_bt_coex_rssi_monitor(struct iwl_priv *priv) 502{ 503 if (priv->bt_is_sco && 504 priv->bt_traffic_load == IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS) 505 iwlagn_bt_adjust_rssi_monitor(priv, true); 506 else 507 iwlagn_bt_adjust_rssi_monitor(priv, false); 508} 509 510static void iwlagn_print_uartmsg(struct iwl_priv *priv, 511 struct iwl_bt_uart_msg *uart_msg) 512{ 513 IWL_DEBUG_COEX(priv, "Message Type = 0x%X, SSN = 0x%X, " 514 "Update Req = 0x%X\n", 515 (BT_UART_MSG_FRAME1MSGTYPE_MSK & uart_msg->frame1) >> 516 BT_UART_MSG_FRAME1MSGTYPE_POS, 517 (BT_UART_MSG_FRAME1SSN_MSK & uart_msg->frame1) >> 518 BT_UART_MSG_FRAME1SSN_POS, 519 (BT_UART_MSG_FRAME1UPDATEREQ_MSK & uart_msg->frame1) >> 520 BT_UART_MSG_FRAME1UPDATEREQ_POS); 521 522 IWL_DEBUG_COEX(priv, "Open connections = 0x%X, Traffic load = 0x%X, " 523 "Chl_SeqN = 0x%X, In band = 0x%X\n", 524 (BT_UART_MSG_FRAME2OPENCONNECTIONS_MSK & uart_msg->frame2) >> 525 BT_UART_MSG_FRAME2OPENCONNECTIONS_POS, 526 (BT_UART_MSG_FRAME2TRAFFICLOAD_MSK & uart_msg->frame2) >> 527 BT_UART_MSG_FRAME2TRAFFICLOAD_POS, 528 (BT_UART_MSG_FRAME2CHLSEQN_MSK & uart_msg->frame2) >> 529 BT_UART_MSG_FRAME2CHLSEQN_POS, 530 (BT_UART_MSG_FRAME2INBAND_MSK & uart_msg->frame2) >> 531 BT_UART_MSG_FRAME2INBAND_POS); 532 533 IWL_DEBUG_COEX(priv, "SCO/eSCO = 0x%X, Sniff = 0x%X, A2DP = 0x%X, " 534 "ACL = 0x%X, Master = 0x%X, OBEX = 0x%X\n", 535 (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3) >> 536 BT_UART_MSG_FRAME3SCOESCO_POS, 537 (BT_UART_MSG_FRAME3SNIFF_MSK & uart_msg->frame3) >> 538 BT_UART_MSG_FRAME3SNIFF_POS, 539 (BT_UART_MSG_FRAME3A2DP_MSK & uart_msg->frame3) >> 540 BT_UART_MSG_FRAME3A2DP_POS, 541 (BT_UART_MSG_FRAME3ACL_MSK & uart_msg->frame3) >> 542 BT_UART_MSG_FRAME3ACL_POS, 543 (BT_UART_MSG_FRAME3MASTER_MSK & uart_msg->frame3) >> 544 BT_UART_MSG_FRAME3MASTER_POS, 545 (BT_UART_MSG_FRAME3OBEX_MSK & uart_msg->frame3) >> 546 BT_UART_MSG_FRAME3OBEX_POS); 547 548 IWL_DEBUG_COEX(priv, "Idle duration = 0x%X\n", 549 (BT_UART_MSG_FRAME4IDLEDURATION_MSK & uart_msg->frame4) >> 550 BT_UART_MSG_FRAME4IDLEDURATION_POS); 551 552 IWL_DEBUG_COEX(priv, "Tx Activity = 0x%X, Rx Activity = 0x%X, " 553 "eSCO Retransmissions = 0x%X\n", 554 (BT_UART_MSG_FRAME5TXACTIVITY_MSK & uart_msg->frame5) >> 555 BT_UART_MSG_FRAME5TXACTIVITY_POS, 556 (BT_UART_MSG_FRAME5RXACTIVITY_MSK & uart_msg->frame5) >> 557 BT_UART_MSG_FRAME5RXACTIVITY_POS, 558 (BT_UART_MSG_FRAME5ESCORETRANSMIT_MSK & uart_msg->frame5) >> 559 BT_UART_MSG_FRAME5ESCORETRANSMIT_POS); 560 561 IWL_DEBUG_COEX(priv, "Sniff Interval = 0x%X, Discoverable = 0x%X\n", 562 (BT_UART_MSG_FRAME6SNIFFINTERVAL_MSK & uart_msg->frame6) >> 563 BT_UART_MSG_FRAME6SNIFFINTERVAL_POS, 564 (BT_UART_MSG_FRAME6DISCOVERABLE_MSK & uart_msg->frame6) >> 565 BT_UART_MSG_FRAME6DISCOVERABLE_POS); 566 567 IWL_DEBUG_COEX(priv, "Sniff Activity = 0x%X, Page = " 568 "0x%X, Inquiry = 0x%X, Connectable = 0x%X\n", 569 (BT_UART_MSG_FRAME7SNIFFACTIVITY_MSK & uart_msg->frame7) >> 570 BT_UART_MSG_FRAME7SNIFFACTIVITY_POS, 571 (BT_UART_MSG_FRAME7PAGE_MSK & uart_msg->frame7) >> 572 BT_UART_MSG_FRAME7PAGE_POS, 573 (BT_UART_MSG_FRAME7INQUIRY_MSK & uart_msg->frame7) >> 574 BT_UART_MSG_FRAME7INQUIRY_POS, 575 (BT_UART_MSG_FRAME7CONNECTABLE_MSK & uart_msg->frame7) >> 576 BT_UART_MSG_FRAME7CONNECTABLE_POS); 577} 578 579static bool iwlagn_set_kill_msk(struct iwl_priv *priv, 580 struct iwl_bt_uart_msg *uart_msg) 581{ 582 bool need_update = false; 583 u8 kill_msk = IWL_BT_KILL_REDUCE; 584 static const __le32 bt_kill_ack_msg[3] = { 585 IWLAGN_BT_KILL_ACK_MASK_DEFAULT, 586 IWLAGN_BT_KILL_ACK_CTS_MASK_SCO, 587 IWLAGN_BT_KILL_ACK_CTS_MASK_REDUCE}; 588 static const __le32 bt_kill_cts_msg[3] = { 589 IWLAGN_BT_KILL_CTS_MASK_DEFAULT, 590 IWLAGN_BT_KILL_ACK_CTS_MASK_SCO, 591 IWLAGN_BT_KILL_ACK_CTS_MASK_REDUCE}; 592 593 if (!priv->reduced_txpower) 594 kill_msk = (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3) 595 ? IWL_BT_KILL_OVERRIDE : IWL_BT_KILL_DEFAULT; 596 if (priv->kill_ack_mask != bt_kill_ack_msg[kill_msk] || 597 priv->kill_cts_mask != bt_kill_cts_msg[kill_msk]) { 598 priv->bt_valid |= IWLAGN_BT_VALID_KILL_ACK_MASK; 599 priv->kill_ack_mask = bt_kill_ack_msg[kill_msk]; 600 priv->bt_valid |= IWLAGN_BT_VALID_KILL_CTS_MASK; 601 priv->kill_cts_mask = bt_kill_cts_msg[kill_msk]; 602 need_update = true; 603 } 604 return need_update; 605} 606 607/* 608 * Upon RSSI changes, sends a bt config command with following changes 609 * 1. enable/disable "reduced control frames tx power 610 * 2. update the "kill)ack_mask" and "kill_cts_mask" 611 * 612 * If "reduced tx power" is enabled, uCode shall 613 * 1. ACK/Back/CTS rate shall reduced to 6Mbps 614 * 2. not use duplciate 20/40MHz mode 615 */ 616static bool iwlagn_fill_txpower_mode(struct iwl_priv *priv, 617 struct iwl_bt_uart_msg *uart_msg) 618{ 619 bool need_update = false; 620 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; 621 int ave_rssi; 622 623 if (!ctx->vif || (ctx->vif->type != NL80211_IFTYPE_STATION)) { 624 IWL_DEBUG_INFO(priv, "BSS ctx not active or not in sta mode\n"); 625 return false; 626 } 627 628 ave_rssi = ieee80211_ave_rssi(ctx->vif); 629 if (!ave_rssi) { 630 /* no rssi data, no changes to reduce tx power */ 631 IWL_DEBUG_COEX(priv, "no rssi data available\n"); 632 return need_update; 633 } 634 if (!priv->reduced_txpower && 635 !iwl_is_associated(priv, IWL_RXON_CTX_PAN) && 636 (ave_rssi > BT_ENABLE_REDUCED_TXPOWER_THRESHOLD) && 637 (uart_msg->frame3 & (BT_UART_MSG_FRAME3ACL_MSK | 638 BT_UART_MSG_FRAME3OBEX_MSK)) && 639 !(uart_msg->frame3 & (BT_UART_MSG_FRAME3SCOESCO_MSK | 640 BT_UART_MSG_FRAME3SNIFF_MSK | BT_UART_MSG_FRAME3A2DP_MSK))) { 641 /* enabling reduced tx power */ 642 priv->reduced_txpower = true; 643 priv->bt_valid |= IWLAGN_BT_VALID_REDUCED_TX_PWR; 644 need_update = true; 645 } else if (priv->reduced_txpower && 646 (iwl_is_associated(priv, IWL_RXON_CTX_PAN) || 647 (ave_rssi < BT_DISABLE_REDUCED_TXPOWER_THRESHOLD) || 648 (uart_msg->frame3 & (BT_UART_MSG_FRAME3SCOESCO_MSK | 649 BT_UART_MSG_FRAME3SNIFF_MSK | BT_UART_MSG_FRAME3A2DP_MSK)) || 650 !(uart_msg->frame3 & (BT_UART_MSG_FRAME3ACL_MSK | 651 BT_UART_MSG_FRAME3OBEX_MSK)))) { 652 /* disable reduced tx power */ 653 priv->reduced_txpower = false; 654 priv->bt_valid |= IWLAGN_BT_VALID_REDUCED_TX_PWR; 655 need_update = true; 656 } 657 658 return need_update; 659} 660 661int iwlagn_bt_coex_profile_notif(struct iwl_priv *priv, 662 struct iwl_rx_cmd_buffer *rxb, 663 struct iwl_device_cmd *cmd) 664{ 665 struct iwl_rx_packet *pkt = rxb_addr(rxb); 666 struct iwl_bt_coex_profile_notif *coex = (void *)pkt->data; 667 struct iwl_bt_uart_msg *uart_msg = &coex->last_bt_uart_msg; 668 669 if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) { 670 /* bt coex disabled */ 671 return 0; 672 } 673 674 IWL_DEBUG_COEX(priv, "BT Coex notification:\n"); 675 IWL_DEBUG_COEX(priv, " status: %d\n", coex->bt_status); 676 IWL_DEBUG_COEX(priv, " traffic load: %d\n", coex->bt_traffic_load); 677 IWL_DEBUG_COEX(priv, " CI compliance: %d\n", 678 coex->bt_ci_compliance); 679 iwlagn_print_uartmsg(priv, uart_msg); 680 681 priv->last_bt_traffic_load = priv->bt_traffic_load; 682 priv->bt_is_sco = iwlagn_bt_traffic_is_sco(uart_msg); 683 684 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) { 685 if (priv->bt_status != coex->bt_status || 686 priv->last_bt_traffic_load != coex->bt_traffic_load) { 687 if (coex->bt_status) { 688 /* BT on */ 689 if (!priv->bt_ch_announce) 690 priv->bt_traffic_load = 691 IWL_BT_COEX_TRAFFIC_LOAD_HIGH; 692 else 693 priv->bt_traffic_load = 694 coex->bt_traffic_load; 695 } else { 696 /* BT off */ 697 priv->bt_traffic_load = 698 IWL_BT_COEX_TRAFFIC_LOAD_NONE; 699 } 700 priv->bt_status = coex->bt_status; 701 queue_work(priv->workqueue, 702 &priv->bt_traffic_change_work); 703 } 704 } 705 706 /* schedule to send runtime bt_config */ 707 /* check reduce power before change ack/cts kill mask */ 708 if (iwlagn_fill_txpower_mode(priv, uart_msg) || 709 iwlagn_set_kill_msk(priv, uart_msg)) 710 queue_work(priv->workqueue, &priv->bt_runtime_config); 711 712 713 /* FIXME: based on notification, adjust the prio_boost */ 714 715 priv->bt_ci_compliance = coex->bt_ci_compliance; 716 return 0; 717} 718 719void iwlagn_bt_rx_handler_setup(struct iwl_priv *priv) 720{ 721 priv->rx_handlers[REPLY_BT_COEX_PROFILE_NOTIF] = 722 iwlagn_bt_coex_profile_notif; 723} 724 725void iwlagn_bt_setup_deferred_work(struct iwl_priv *priv) 726{ 727 INIT_WORK(&priv->bt_traffic_change_work, 728 iwlagn_bt_traffic_change_work); 729} 730 731void iwlagn_bt_cancel_deferred_work(struct iwl_priv *priv) 732{ 733 cancel_work_sync(&priv->bt_traffic_change_work); 734} 735 736static bool is_single_rx_stream(struct iwl_priv *priv) 737{ 738 return priv->current_ht_config.smps == IEEE80211_SMPS_STATIC || 739 priv->current_ht_config.single_chain_sufficient; 740} 741 742#define IWL_NUM_RX_CHAINS_MULTIPLE 3 743#define IWL_NUM_RX_CHAINS_SINGLE 2 744#define IWL_NUM_IDLE_CHAINS_DUAL 2 745#define IWL_NUM_IDLE_CHAINS_SINGLE 1 746 747/* 748 * Determine how many receiver/antenna chains to use. 749 * 750 * More provides better reception via diversity. Fewer saves power 751 * at the expense of throughput, but only when not in powersave to 752 * start with. 753 * 754 * MIMO (dual stream) requires at least 2, but works better with 3. 755 * This does not determine *which* chains to use, just how many. 756 */ 757static int iwl_get_active_rx_chain_count(struct iwl_priv *priv) 758{ 759 if (priv->lib->bt_params && 760 priv->lib->bt_params->advanced_bt_coexist && 761 (priv->bt_full_concurrent || 762 priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) { 763 /* 764 * only use chain 'A' in bt high traffic load or 765 * full concurrency mode 766 */ 767 return IWL_NUM_RX_CHAINS_SINGLE; 768 } 769 /* # of Rx chains to use when expecting MIMO. */ 770 if (is_single_rx_stream(priv)) 771 return IWL_NUM_RX_CHAINS_SINGLE; 772 else 773 return IWL_NUM_RX_CHAINS_MULTIPLE; 774} 775 776/* 777 * When we are in power saving mode, unless device support spatial 778 * multiplexing power save, use the active count for rx chain count. 779 */ 780static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt) 781{ 782 /* # Rx chains when idling, depending on SMPS mode */ 783 switch (priv->current_ht_config.smps) { 784 case IEEE80211_SMPS_STATIC: 785 case IEEE80211_SMPS_DYNAMIC: 786 return IWL_NUM_IDLE_CHAINS_SINGLE; 787 case IEEE80211_SMPS_AUTOMATIC: 788 case IEEE80211_SMPS_OFF: 789 return active_cnt; 790 default: 791 WARN(1, "invalid SMPS mode %d", 792 priv->current_ht_config.smps); 793 return active_cnt; 794 } 795} 796 797/* up to 4 chains */ 798static u8 iwl_count_chain_bitmap(u32 chain_bitmap) 799{ 800 u8 res; 801 res = (chain_bitmap & BIT(0)) >> 0; 802 res += (chain_bitmap & BIT(1)) >> 1; 803 res += (chain_bitmap & BIT(2)) >> 2; 804 res += (chain_bitmap & BIT(3)) >> 3; 805 return res; 806} 807 808/** 809 * iwlagn_set_rxon_chain - Set up Rx chain usage in "staging" RXON image 810 * 811 * Selects how many and which Rx receivers/antennas/chains to use. 812 * This should not be used for scan command ... it puts data in wrong place. 813 */ 814void iwlagn_set_rxon_chain(struct iwl_priv *priv, struct iwl_rxon_context *ctx) 815{ 816 bool is_single = is_single_rx_stream(priv); 817 bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status); 818 u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt; 819 u32 active_chains; 820 u16 rx_chain; 821 822 /* Tell uCode which antennas are actually connected. 823 * Before first association, we assume all antennas are connected. 824 * Just after first association, iwl_chain_noise_calibration() 825 * checks which antennas actually *are* connected. */ 826 if (priv->chain_noise_data.active_chains) 827 active_chains = priv->chain_noise_data.active_chains; 828 else 829 active_chains = priv->nvm_data->valid_rx_ant; 830 831 if (priv->lib->bt_params && 832 priv->lib->bt_params->advanced_bt_coexist && 833 (priv->bt_full_concurrent || 834 priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) { 835 /* 836 * only use chain 'A' in bt high traffic load or 837 * full concurrency mode 838 */ 839 active_chains = first_antenna(active_chains); 840 } 841 842 rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS; 843 844 /* How many receivers should we use? */ 845 active_rx_cnt = iwl_get_active_rx_chain_count(priv); 846 idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt); 847 848 849 /* correct rx chain count according hw settings 850 * and chain noise calibration 851 */ 852 valid_rx_cnt = iwl_count_chain_bitmap(active_chains); 853 if (valid_rx_cnt < active_rx_cnt) 854 active_rx_cnt = valid_rx_cnt; 855 856 if (valid_rx_cnt < idle_rx_cnt) 857 idle_rx_cnt = valid_rx_cnt; 858 859 rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS; 860 rx_chain |= idle_rx_cnt << RXON_RX_CHAIN_CNT_POS; 861 862 ctx->staging.rx_chain = cpu_to_le16(rx_chain); 863 864 if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam) 865 ctx->staging.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK; 866 else 867 ctx->staging.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK; 868 869 IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n", 870 ctx->staging.rx_chain, 871 active_rx_cnt, idle_rx_cnt); 872 873 WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 || 874 active_rx_cnt < idle_rx_cnt); 875} 876 877u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant, u8 valid) 878{ 879 int i; 880 u8 ind = ant; 881 882 if (priv->band == IEEE80211_BAND_2GHZ && 883 priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH) 884 return 0; 885 886 for (i = 0; i < RATE_ANT_NUM - 1; i++) { 887 ind = (ind + 1) < RATE_ANT_NUM ? ind + 1 : 0; 888 if (valid & BIT(ind)) 889 return ind; 890 } 891 return ant; 892} 893 894#ifdef CONFIG_PM_SLEEP 895static void iwlagn_convert_p1k(u16 *p1k, __le16 *out) 896{ 897 int i; 898 899 for (i = 0; i < IWLAGN_P1K_SIZE; i++) 900 out[i] = cpu_to_le16(p1k[i]); 901} 902 903struct wowlan_key_data { 904 struct iwl_rxon_context *ctx; 905 struct iwlagn_wowlan_rsc_tsc_params_cmd *rsc_tsc; 906 struct iwlagn_wowlan_tkip_params_cmd *tkip; 907 const u8 *bssid; 908 bool error, use_rsc_tsc, use_tkip; 909}; 910 911 912static void iwlagn_wowlan_program_keys(struct ieee80211_hw *hw, 913 struct ieee80211_vif *vif, 914 struct ieee80211_sta *sta, 915 struct ieee80211_key_conf *key, 916 void *_data) 917{ 918 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); 919 struct wowlan_key_data *data = _data; 920 struct iwl_rxon_context *ctx = data->ctx; 921 struct aes_sc *aes_sc, *aes_tx_sc = NULL; 922 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL; 923 struct iwlagn_p1k_cache *rx_p1ks; 924 u8 *rx_mic_key; 925 struct ieee80211_key_seq seq; 926 u32 cur_rx_iv32 = 0; 927 u16 p1k[IWLAGN_P1K_SIZE]; 928 int ret, i; 929 930 mutex_lock(&priv->mutex); 931 932 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 || 933 key->cipher == WLAN_CIPHER_SUITE_WEP104) && 934 !sta && !ctx->key_mapping_keys) 935 ret = iwl_set_default_wep_key(priv, ctx, key); 936 else 937 ret = iwl_set_dynamic_key(priv, ctx, key, sta); 938 939 if (ret) { 940 IWL_ERR(priv, "Error setting key during suspend!\n"); 941 data->error = true; 942 } 943 944 switch (key->cipher) { 945 case WLAN_CIPHER_SUITE_TKIP: 946 if (sta) { 947 tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc; 948 tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc; 949 950 rx_p1ks = data->tkip->rx_uni; 951 952 ieee80211_get_key_tx_seq(key, &seq); 953 tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16); 954 tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32); 955 956 ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k); 957 iwlagn_convert_p1k(p1k, data->tkip->tx.p1k); 958 959 memcpy(data->tkip->mic_keys.tx, 960 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], 961 IWLAGN_MIC_KEY_SIZE); 962 963 rx_mic_key = data->tkip->mic_keys.rx_unicast; 964 } else { 965 tkip_sc = 966 data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc; 967 rx_p1ks = data->tkip->rx_multi; 968 rx_mic_key = data->tkip->mic_keys.rx_mcast; 969 } 970 971 /* 972 * For non-QoS this relies on the fact that both the uCode and 973 * mac80211 use TID 0 (as they need to to avoid replay attacks) 974 * for checking the IV in the frames. 975 */ 976 for (i = 0; i < IWLAGN_NUM_RSC; i++) { 977 ieee80211_get_key_rx_seq(key, i, &seq); 978 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16); 979 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32); 980 /* wrapping isn't allowed, AP must rekey */ 981 if (seq.tkip.iv32 > cur_rx_iv32) 982 cur_rx_iv32 = seq.tkip.iv32; 983 } 984 985 ieee80211_get_tkip_rx_p1k(key, data->bssid, cur_rx_iv32, p1k); 986 iwlagn_convert_p1k(p1k, rx_p1ks[0].p1k); 987 ieee80211_get_tkip_rx_p1k(key, data->bssid, 988 cur_rx_iv32 + 1, p1k); 989 iwlagn_convert_p1k(p1k, rx_p1ks[1].p1k); 990 991 memcpy(rx_mic_key, 992 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], 993 IWLAGN_MIC_KEY_SIZE); 994 995 data->use_tkip = true; 996 data->use_rsc_tsc = true; 997 break; 998 case WLAN_CIPHER_SUITE_CCMP: 999 if (sta) { 1000 u8 *pn = seq.ccmp.pn; 1001 1002 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc; 1003 aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc; 1004 1005 ieee80211_get_key_tx_seq(key, &seq); 1006 aes_tx_sc->pn = cpu_to_le64( 1007 (u64)pn[5] | 1008 ((u64)pn[4] << 8) | 1009 ((u64)pn[3] << 16) | 1010 ((u64)pn[2] << 24) | 1011 ((u64)pn[1] << 32) | 1012 ((u64)pn[0] << 40)); 1013 } else 1014 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc; 1015 1016 /* 1017 * For non-QoS this relies on the fact that both the uCode and 1018 * mac80211 use TID 0 for checking the IV in the frames. 1019 */ 1020 for (i = 0; i < IWLAGN_NUM_RSC; i++) { 1021 u8 *pn = seq.ccmp.pn; 1022 1023 ieee80211_get_key_rx_seq(key, i, &seq); 1024 aes_sc->pn = cpu_to_le64( 1025 (u64)pn[5] | 1026 ((u64)pn[4] << 8) | 1027 ((u64)pn[3] << 16) | 1028 ((u64)pn[2] << 24) | 1029 ((u64)pn[1] << 32) | 1030 ((u64)pn[0] << 40)); 1031 } 1032 data->use_rsc_tsc = true; 1033 break; 1034 } 1035 1036 mutex_unlock(&priv->mutex); 1037} 1038 1039int iwlagn_send_patterns(struct iwl_priv *priv, 1040 struct cfg80211_wowlan *wowlan) 1041{ 1042 struct iwlagn_wowlan_patterns_cmd *pattern_cmd; 1043 struct iwl_host_cmd cmd = { 1044 .id = REPLY_WOWLAN_PATTERNS, 1045 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1046 }; 1047 int i, err; 1048 1049 if (!wowlan->n_patterns) 1050 return 0; 1051 1052 cmd.len[0] = sizeof(*pattern_cmd) + 1053 wowlan->n_patterns * sizeof(struct iwlagn_wowlan_pattern); 1054 1055 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL); 1056 if (!pattern_cmd) 1057 return -ENOMEM; 1058 1059 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns); 1060 1061 for (i = 0; i < wowlan->n_patterns; i++) { 1062 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8); 1063 1064 memcpy(&pattern_cmd->patterns[i].mask, 1065 wowlan->patterns[i].mask, mask_len); 1066 memcpy(&pattern_cmd->patterns[i].pattern, 1067 wowlan->patterns[i].pattern, 1068 wowlan->patterns[i].pattern_len); 1069 pattern_cmd->patterns[i].mask_size = mask_len; 1070 pattern_cmd->patterns[i].pattern_size = 1071 wowlan->patterns[i].pattern_len; 1072 } 1073 1074 cmd.data[0] = pattern_cmd; 1075 err = iwl_dvm_send_cmd(priv, &cmd); 1076 kfree(pattern_cmd); 1077 return err; 1078} 1079 1080int iwlagn_suspend(struct iwl_priv *priv, struct cfg80211_wowlan *wowlan) 1081{ 1082 struct iwlagn_wowlan_wakeup_filter_cmd wakeup_filter_cmd; 1083 struct iwl_rxon_cmd rxon; 1084 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; 1085 struct iwlagn_wowlan_kek_kck_material_cmd kek_kck_cmd; 1086 struct iwlagn_wowlan_tkip_params_cmd tkip_cmd = {}; 1087 struct iwlagn_d3_config_cmd d3_cfg_cmd = { 1088 /* 1089 * Program the minimum sleep time to 10 seconds, as many 1090 * platforms have issues processing a wakeup signal while 1091 * still being in the process of suspending. 1092 */ 1093 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000), 1094 }; 1095 struct wowlan_key_data key_data = { 1096 .ctx = ctx, 1097 .bssid = ctx->active.bssid_addr, 1098 .use_rsc_tsc = false, 1099 .tkip = &tkip_cmd, 1100 .use_tkip = false, 1101 }; 1102 int ret, i; 1103 u16 seq; 1104 1105 key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL); 1106 if (!key_data.rsc_tsc) 1107 return -ENOMEM; 1108 1109 memset(&wakeup_filter_cmd, 0, sizeof(wakeup_filter_cmd)); 1110 1111 /* 1112 * We know the last used seqno, and the uCode expects to know that 1113 * one, it will increment before TX. 1114 */ 1115 seq = le16_to_cpu(priv->last_seq_ctl) & IEEE80211_SCTL_SEQ; 1116 wakeup_filter_cmd.non_qos_seq = cpu_to_le16(seq); 1117 1118 /* 1119 * For QoS counters, we store the one to use next, so subtract 0x10 1120 * since the uCode will add 0x10 before using the value. 1121 */ 1122 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1123 seq = priv->tid_data[IWL_AP_ID][i].seq_number; 1124 seq -= 0x10; 1125 wakeup_filter_cmd.qos_seq[i] = cpu_to_le16(seq); 1126 } 1127 1128 if (wowlan->disconnect) 1129 wakeup_filter_cmd.enabled |= 1130 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_BEACON_MISS | 1131 IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE); 1132 if (wowlan->magic_pkt) 1133 wakeup_filter_cmd.enabled |= 1134 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET); 1135 if (wowlan->gtk_rekey_failure) 1136 wakeup_filter_cmd.enabled |= 1137 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL); 1138 if (wowlan->eap_identity_req) 1139 wakeup_filter_cmd.enabled |= 1140 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ); 1141 if (wowlan->four_way_handshake) 1142 wakeup_filter_cmd.enabled |= 1143 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE); 1144 if (wowlan->n_patterns) 1145 wakeup_filter_cmd.enabled |= 1146 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH); 1147 1148 if (wowlan->rfkill_release) 1149 d3_cfg_cmd.wakeup_flags |= 1150 cpu_to_le32(IWLAGN_D3_WAKEUP_RFKILL); 1151 1152 iwl_scan_cancel_timeout(priv, 200); 1153 1154 memcpy(&rxon, &ctx->active, sizeof(rxon)); 1155 1156 priv->ucode_loaded = false; 1157 iwl_trans_stop_device(priv->trans); 1158 1159 priv->wowlan = true; 1160 1161 ret = iwl_load_ucode_wait_alive(priv, IWL_UCODE_WOWLAN); 1162 if (ret) 1163 goto out; 1164 1165 /* now configure WoWLAN ucode */ 1166 ret = iwl_alive_start(priv); 1167 if (ret) 1168 goto out; 1169 1170 memcpy(&ctx->staging, &rxon, sizeof(rxon)); 1171 ret = iwlagn_commit_rxon(priv, ctx); 1172 if (ret) 1173 goto out; 1174 1175 ret = iwl_power_update_mode(priv, true); 1176 if (ret) 1177 goto out; 1178 1179 if (!iwlwifi_mod_params.sw_crypto) { 1180 /* mark all keys clear */ 1181 priv->ucode_key_table = 0; 1182 ctx->key_mapping_keys = 0; 1183 1184 /* 1185 * This needs to be unlocked due to lock ordering 1186 * constraints. Since we're in the suspend path 1187 * that isn't really a problem though. 1188 */ 1189 mutex_unlock(&priv->mutex); 1190 ieee80211_iter_keys(priv->hw, ctx->vif, 1191 iwlagn_wowlan_program_keys, 1192 &key_data); 1193 mutex_lock(&priv->mutex); 1194 if (key_data.error) { 1195 ret = -EIO; 1196 goto out; 1197 } 1198 1199 if (key_data.use_rsc_tsc) { 1200 struct iwl_host_cmd rsc_tsc_cmd = { 1201 .id = REPLY_WOWLAN_TSC_RSC_PARAMS, 1202 .data[0] = key_data.rsc_tsc, 1203 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1204 .len[0] = sizeof(*key_data.rsc_tsc), 1205 }; 1206 1207 ret = iwl_dvm_send_cmd(priv, &rsc_tsc_cmd); 1208 if (ret) 1209 goto out; 1210 } 1211 1212 if (key_data.use_tkip) { 1213 ret = iwl_dvm_send_cmd_pdu(priv, 1214 REPLY_WOWLAN_TKIP_PARAMS, 1215 0, sizeof(tkip_cmd), 1216 &tkip_cmd); 1217 if (ret) 1218 goto out; 1219 } 1220 1221 if (priv->have_rekey_data) { 1222 memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd)); 1223 memcpy(kek_kck_cmd.kck, priv->kck, NL80211_KCK_LEN); 1224 kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN); 1225 memcpy(kek_kck_cmd.kek, priv->kek, NL80211_KEK_LEN); 1226 kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN); 1227 kek_kck_cmd.replay_ctr = priv->replay_ctr; 1228 1229 ret = iwl_dvm_send_cmd_pdu(priv, 1230 REPLY_WOWLAN_KEK_KCK_MATERIAL, 1231 0, sizeof(kek_kck_cmd), 1232 &kek_kck_cmd); 1233 if (ret) 1234 goto out; 1235 } 1236 } 1237 1238 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_D3_CONFIG, 0, 1239 sizeof(d3_cfg_cmd), &d3_cfg_cmd); 1240 if (ret) 1241 goto out; 1242 1243 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_WOWLAN_WAKEUP_FILTER, 1244 0, sizeof(wakeup_filter_cmd), 1245 &wakeup_filter_cmd); 1246 if (ret) 1247 goto out; 1248 1249 ret = iwlagn_send_patterns(priv, wowlan); 1250 out: 1251 kfree(key_data.rsc_tsc); 1252 return ret; 1253} 1254#endif 1255 1256int iwl_dvm_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd) 1257{ 1258 if (iwl_is_rfkill(priv) || iwl_is_ctkill(priv)) { 1259 IWL_WARN(priv, "Not sending command - %s KILL\n", 1260 iwl_is_rfkill(priv) ? "RF" : "CT"); 1261 return -EIO; 1262 } 1263 1264 if (test_bit(STATUS_FW_ERROR, &priv->status)) { 1265 IWL_ERR(priv, "Command %s failed: FW Error\n", 1266 iwl_dvm_get_cmd_string(cmd->id)); 1267 return -EIO; 1268 } 1269 1270 /* 1271 * This can happen upon FW ASSERT: we clear the STATUS_FW_ERROR flag 1272 * in iwl_down but cancel the workers only later. 1273 */ 1274 if (!priv->ucode_loaded) { 1275 IWL_ERR(priv, "Fw not loaded - dropping CMD: %x\n", cmd->id); 1276 return -EIO; 1277 } 1278 1279 /* 1280 * Synchronous commands from this op-mode must hold 1281 * the mutex, this ensures we don't try to send two 1282 * (or more) synchronous commands at a time. 1283 */ 1284 if (!(cmd->flags & CMD_ASYNC)) 1285 lockdep_assert_held(&priv->mutex); 1286 1287 return iwl_trans_send_cmd(priv->trans, cmd); 1288} 1289 1290int iwl_dvm_send_cmd_pdu(struct iwl_priv *priv, u8 id, 1291 u32 flags, u16 len, const void *data) 1292{ 1293 struct iwl_host_cmd cmd = { 1294 .id = id, 1295 .len = { len, }, 1296 .data = { data, }, 1297 .flags = flags, 1298 }; 1299 1300 return iwl_dvm_send_cmd(priv, &cmd); 1301} 1302