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 43 int 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 49 int 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 88 void 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 97 int 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 } 117 118 int 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 */ 138 int 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 } 173 174 void 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); 184 done: 185 ieee80211_wake_queues(priv->hw); 186 mutex_unlock(&priv->mutex); 187 } 188 189 /* 190 * BT coex 191 */ 192 /* Notmal TDM */ 193 static 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 }; 207 208 209 /* Loose Coex */ 210 static const __le32 iwlagn_loose_lookup[IWLAGN_BT_DECISION_LUT_SIZE] = { 211 cpu_to_le32(0xaaaaaaaa), 212 cpu_to_le32(0xaaaaaaaa), 213 cpu_to_le32(0xaeaaaaaa), 214 cpu_to_le32(0xaaaaaaaa), 215 cpu_to_le32(0xcc00ff28), 216 cpu_to_le32(0x0000aaaa), 217 cpu_to_le32(0xcc00aaaa), 218 cpu_to_le32(0x0000aaaa), 219 cpu_to_le32(0x00000000), 220 cpu_to_le32(0x00000000), 221 cpu_to_le32(0xf0005000), 222 cpu_to_le32(0xf0005000), 223 }; 224 225 /* Full concurrency */ 226 static const __le32 iwlagn_concurrent_lookup[IWLAGN_BT_DECISION_LUT_SIZE] = { 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(0xaaaaaaaa), 235 cpu_to_le32(0x00000000), 236 cpu_to_le32(0x00000000), 237 cpu_to_le32(0x00000000), 238 cpu_to_le32(0x00000000), 239 }; 240 241 void iwlagn_send_advance_bt_config(struct iwl_priv *priv) 242 { 243 struct iwl_basic_bt_cmd basic = { 244 .max_kill = IWLAGN_BT_MAX_KILL_DEFAULT, 245 .bt3_timer_t7_value = IWLAGN_BT3_T7_DEFAULT, 246 .bt3_prio_sample_time = IWLAGN_BT3_PRIO_SAMPLE_DEFAULT, 247 .bt3_timer_t2_value = IWLAGN_BT3_T2_DEFAULT, 248 }; 249 struct iwl_bt_cmd_v1 bt_cmd_v1; 250 struct iwl_bt_cmd_v2 bt_cmd_v2; 251 int ret; 252 253 BUILD_BUG_ON(sizeof(iwlagn_def_3w_lookup) != 254 sizeof(basic.bt3_lookup_table)); 255 256 if (priv->lib->bt_params) { 257 /* 258 * newer generation of devices (2000 series and newer) 259 * use the version 2 of the bt command 260 * we need to make sure sending the host command 261 * with correct data structure to avoid uCode assert 262 */ 263 if (priv->lib->bt_params->bt_session_2) { 264 bt_cmd_v2.prio_boost = cpu_to_le32( 265 priv->lib->bt_params->bt_prio_boost); 266 bt_cmd_v2.tx_prio_boost = 0; 267 bt_cmd_v2.rx_prio_boost = 0; 268 } else { 269 /* older version only has 8 bits */ 270 WARN_ON(priv->lib->bt_params->bt_prio_boost & ~0xFF); 271 bt_cmd_v1.prio_boost = 272 priv->lib->bt_params->bt_prio_boost; 273 bt_cmd_v1.tx_prio_boost = 0; 274 bt_cmd_v1.rx_prio_boost = 0; 275 } 276 } else { 277 IWL_ERR(priv, "failed to construct BT Coex Config\n"); 278 return; 279 } 280 281 /* 282 * Possible situations when BT needs to take over for receive, 283 * at the same time where STA needs to response to AP's frame(s), 284 * reduce the tx power of the required response frames, by that, 285 * allow the concurrent BT receive & WiFi transmit 286 * (BT - ANT A, WiFi -ANT B), without interference to one another 287 * 288 * Reduced tx power apply to control frames only (ACK/Back/CTS) 289 * when indicated by the BT config command 290 */ 291 basic.kill_ack_mask = priv->kill_ack_mask; 292 basic.kill_cts_mask = priv->kill_cts_mask; 293 if (priv->reduced_txpower) 294 basic.reduce_txpower = IWLAGN_BT_REDUCED_TX_PWR; 295 basic.valid = priv->bt_valid; 296 297 /* 298 * Configure BT coex mode to "no coexistence" when the 299 * user disabled BT coexistence, we have no interface 300 * (might be in monitor mode), or the interface is in 301 * IBSS mode (no proper uCode support for coex then). 302 */ 303 if (!iwlwifi_mod_params.bt_coex_active || 304 priv->iw_mode == NL80211_IFTYPE_ADHOC) { 305 basic.flags = IWLAGN_BT_FLAG_COEX_MODE_DISABLED; 306 } else { 307 basic.flags = IWLAGN_BT_FLAG_COEX_MODE_3W << 308 IWLAGN_BT_FLAG_COEX_MODE_SHIFT; 309 310 if (!priv->bt_enable_pspoll) 311 basic.flags |= IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE; 312 else 313 basic.flags &= ~IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE; 314 315 if (priv->bt_ch_announce) 316 basic.flags |= IWLAGN_BT_FLAG_CHANNEL_INHIBITION; 317 IWL_DEBUG_COEX(priv, "BT coex flag: 0X%x\n", basic.flags); 318 } 319 priv->bt_enable_flag = basic.flags; 320 if (priv->bt_full_concurrent) 321 memcpy(basic.bt3_lookup_table, iwlagn_concurrent_lookup, 322 sizeof(iwlagn_concurrent_lookup)); 323 else 324 memcpy(basic.bt3_lookup_table, iwlagn_def_3w_lookup, 325 sizeof(iwlagn_def_3w_lookup)); 326 327 IWL_DEBUG_COEX(priv, "BT coex %s in %s mode\n", 328 basic.flags ? "active" : "disabled", 329 priv->bt_full_concurrent ? 330 "full concurrency" : "3-wire"); 331 332 if (priv->lib->bt_params->bt_session_2) { 333 memcpy(&bt_cmd_v2.basic, &basic, 334 sizeof(basic)); 335 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG, 336 0, sizeof(bt_cmd_v2), &bt_cmd_v2); 337 } else { 338 memcpy(&bt_cmd_v1.basic, &basic, 339 sizeof(basic)); 340 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG, 341 0, sizeof(bt_cmd_v1), &bt_cmd_v1); 342 } 343 if (ret) 344 IWL_ERR(priv, "failed to send BT Coex Config\n"); 345 346 } 347 348 void iwlagn_bt_adjust_rssi_monitor(struct iwl_priv *priv, bool rssi_ena) 349 { 350 struct iwl_rxon_context *ctx, *found_ctx = NULL; 351 bool found_ap = false; 352 353 lockdep_assert_held(&priv->mutex); 354 355 /* Check whether AP or GO mode is active. */ 356 if (rssi_ena) { 357 for_each_context(priv, ctx) { 358 if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_AP && 359 iwl_is_associated_ctx(ctx)) { 360 found_ap = true; 361 break; 362 } 363 } 364 } 365 366 /* 367 * If disable was received or If GO/AP mode, disable RSSI 368 * measurements. 369 */ 370 if (!rssi_ena || found_ap) { 371 if (priv->cur_rssi_ctx) { 372 ctx = priv->cur_rssi_ctx; 373 ieee80211_disable_rssi_reports(ctx->vif); 374 priv->cur_rssi_ctx = NULL; 375 } 376 return; 377 } 378 379 /* 380 * If rssi measurements need to be enabled, consider all cases now. 381 * Figure out how many contexts are active. 382 */ 383 for_each_context(priv, ctx) { 384 if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION && 385 iwl_is_associated_ctx(ctx)) { 386 found_ctx = ctx; 387 break; 388 } 389 } 390 391 /* 392 * rssi monitor already enabled for the correct interface...nothing 393 * to do. 394 */ 395 if (found_ctx == priv->cur_rssi_ctx) 396 return; 397 398 /* 399 * Figure out if rssi monitor is currently enabled, and needs 400 * to be changed. If rssi monitor is already enabled, disable 401 * it first else just enable rssi measurements on the 402 * interface found above. 403 */ 404 if (priv->cur_rssi_ctx) { 405 ctx = priv->cur_rssi_ctx; 406 if (ctx->vif) 407 ieee80211_disable_rssi_reports(ctx->vif); 408 } 409 410 priv->cur_rssi_ctx = found_ctx; 411 412 if (!found_ctx) 413 return; 414 415 ieee80211_enable_rssi_reports(found_ctx->vif, 416 IWLAGN_BT_PSP_MIN_RSSI_THRESHOLD, 417 IWLAGN_BT_PSP_MAX_RSSI_THRESHOLD); 418 } 419 420 static bool iwlagn_bt_traffic_is_sco(struct iwl_bt_uart_msg *uart_msg) 421 { 422 return (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3) >> 423 BT_UART_MSG_FRAME3SCOESCO_POS; 424 } 425 426 static void iwlagn_bt_traffic_change_work(struct work_struct *work) 427 { 428 struct iwl_priv *priv = 429 container_of(work, struct iwl_priv, bt_traffic_change_work); 430 struct iwl_rxon_context *ctx; 431 int smps_request = -1; 432 433 if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) { 434 /* bt coex disabled */ 435 return; 436 } 437 438 /* 439 * Note: bt_traffic_load can be overridden by scan complete and 440 * coex profile notifications. Ignore that since only bad consequence 441 * can be not matching debug print with actual state. 442 */ 443 IWL_DEBUG_COEX(priv, "BT traffic load changes: %d\n", 444 priv->bt_traffic_load); 445 446 switch (priv->bt_traffic_load) { 447 case IWL_BT_COEX_TRAFFIC_LOAD_NONE: 448 if (priv->bt_status) 449 smps_request = IEEE80211_SMPS_DYNAMIC; 450 else 451 smps_request = IEEE80211_SMPS_AUTOMATIC; 452 break; 453 case IWL_BT_COEX_TRAFFIC_LOAD_LOW: 454 smps_request = IEEE80211_SMPS_DYNAMIC; 455 break; 456 case IWL_BT_COEX_TRAFFIC_LOAD_HIGH: 457 case IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS: 458 smps_request = IEEE80211_SMPS_STATIC; 459 break; 460 default: 461 IWL_ERR(priv, "Invalid BT traffic load: %d\n", 462 priv->bt_traffic_load); 463 break; 464 } 465 466 mutex_lock(&priv->mutex); 467 468 /* 469 * We can not send command to firmware while scanning. When the scan 470 * complete we will schedule this work again. We do check with mutex 471 * locked to prevent new scan request to arrive. We do not check 472 * STATUS_SCANNING to avoid race when queue_work two times from 473 * different notifications, but quit and not perform any work at all. 474 */ 475 if (test_bit(STATUS_SCAN_HW, &priv->status)) 476 goto out; 477 478 iwl_update_chain_flags(priv); 479 480 if (smps_request != -1) { 481 priv->current_ht_config.smps = smps_request; 482 for_each_context(priv, ctx) { 483 if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION) 484 ieee80211_request_smps(ctx->vif, smps_request); 485 } 486 } 487 488 /* 489 * Dynamic PS poll related functionality. Adjust RSSI measurements if 490 * necessary. 491 */ 492 iwlagn_bt_coex_rssi_monitor(priv); 493 out: 494 mutex_unlock(&priv->mutex); 495 } 496 497 /* 498 * If BT sco traffic, and RSSI monitor is enabled, move measurements to the 499 * correct interface or disable it if this is the last interface to be 500 * removed. 501 */ 502 void iwlagn_bt_coex_rssi_monitor(struct iwl_priv *priv) 503 { 504 if (priv->bt_is_sco && 505 priv->bt_traffic_load == IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS) 506 iwlagn_bt_adjust_rssi_monitor(priv, true); 507 else 508 iwlagn_bt_adjust_rssi_monitor(priv, false); 509 } 510 511 static void iwlagn_print_uartmsg(struct iwl_priv *priv, 512 struct iwl_bt_uart_msg *uart_msg) 513 { 514 IWL_DEBUG_COEX(priv, "Message Type = 0x%X, SSN = 0x%X, " 515 "Update Req = 0x%X\n", 516 (BT_UART_MSG_FRAME1MSGTYPE_MSK & uart_msg->frame1) >> 517 BT_UART_MSG_FRAME1MSGTYPE_POS, 518 (BT_UART_MSG_FRAME1SSN_MSK & uart_msg->frame1) >> 519 BT_UART_MSG_FRAME1SSN_POS, 520 (BT_UART_MSG_FRAME1UPDATEREQ_MSK & uart_msg->frame1) >> 521 BT_UART_MSG_FRAME1UPDATEREQ_POS); 522 523 IWL_DEBUG_COEX(priv, "Open connections = 0x%X, Traffic load = 0x%X, " 524 "Chl_SeqN = 0x%X, In band = 0x%X\n", 525 (BT_UART_MSG_FRAME2OPENCONNECTIONS_MSK & uart_msg->frame2) >> 526 BT_UART_MSG_FRAME2OPENCONNECTIONS_POS, 527 (BT_UART_MSG_FRAME2TRAFFICLOAD_MSK & uart_msg->frame2) >> 528 BT_UART_MSG_FRAME2TRAFFICLOAD_POS, 529 (BT_UART_MSG_FRAME2CHLSEQN_MSK & uart_msg->frame2) >> 530 BT_UART_MSG_FRAME2CHLSEQN_POS, 531 (BT_UART_MSG_FRAME2INBAND_MSK & uart_msg->frame2) >> 532 BT_UART_MSG_FRAME2INBAND_POS); 533 534 IWL_DEBUG_COEX(priv, "SCO/eSCO = 0x%X, Sniff = 0x%X, A2DP = 0x%X, " 535 "ACL = 0x%X, Master = 0x%X, OBEX = 0x%X\n", 536 (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3) >> 537 BT_UART_MSG_FRAME3SCOESCO_POS, 538 (BT_UART_MSG_FRAME3SNIFF_MSK & uart_msg->frame3) >> 539 BT_UART_MSG_FRAME3SNIFF_POS, 540 (BT_UART_MSG_FRAME3A2DP_MSK & uart_msg->frame3) >> 541 BT_UART_MSG_FRAME3A2DP_POS, 542 (BT_UART_MSG_FRAME3ACL_MSK & uart_msg->frame3) >> 543 BT_UART_MSG_FRAME3ACL_POS, 544 (BT_UART_MSG_FRAME3MASTER_MSK & uart_msg->frame3) >> 545 BT_UART_MSG_FRAME3MASTER_POS, 546 (BT_UART_MSG_FRAME3OBEX_MSK & uart_msg->frame3) >> 547 BT_UART_MSG_FRAME3OBEX_POS); 548 549 IWL_DEBUG_COEX(priv, "Idle duration = 0x%X\n", 550 (BT_UART_MSG_FRAME4IDLEDURATION_MSK & uart_msg->frame4) >> 551 BT_UART_MSG_FRAME4IDLEDURATION_POS); 552 553 IWL_DEBUG_COEX(priv, "Tx Activity = 0x%X, Rx Activity = 0x%X, " 554 "eSCO Retransmissions = 0x%X\n", 555 (BT_UART_MSG_FRAME5TXACTIVITY_MSK & uart_msg->frame5) >> 556 BT_UART_MSG_FRAME5TXACTIVITY_POS, 557 (BT_UART_MSG_FRAME5RXACTIVITY_MSK & uart_msg->frame5) >> 558 BT_UART_MSG_FRAME5RXACTIVITY_POS, 559 (BT_UART_MSG_FRAME5ESCORETRANSMIT_MSK & uart_msg->frame5) >> 560 BT_UART_MSG_FRAME5ESCORETRANSMIT_POS); 561 562 IWL_DEBUG_COEX(priv, "Sniff Interval = 0x%X, Discoverable = 0x%X\n", 563 (BT_UART_MSG_FRAME6SNIFFINTERVAL_MSK & uart_msg->frame6) >> 564 BT_UART_MSG_FRAME6SNIFFINTERVAL_POS, 565 (BT_UART_MSG_FRAME6DISCOVERABLE_MSK & uart_msg->frame6) >> 566 BT_UART_MSG_FRAME6DISCOVERABLE_POS); 567 568 IWL_DEBUG_COEX(priv, "Sniff Activity = 0x%X, Page = " 569 "0x%X, Inquiry = 0x%X, Connectable = 0x%X\n", 570 (BT_UART_MSG_FRAME7SNIFFACTIVITY_MSK & uart_msg->frame7) >> 571 BT_UART_MSG_FRAME7SNIFFACTIVITY_POS, 572 (BT_UART_MSG_FRAME7PAGE_MSK & uart_msg->frame7) >> 573 BT_UART_MSG_FRAME7PAGE_POS, 574 (BT_UART_MSG_FRAME7INQUIRY_MSK & uart_msg->frame7) >> 575 BT_UART_MSG_FRAME7INQUIRY_POS, 576 (BT_UART_MSG_FRAME7CONNECTABLE_MSK & uart_msg->frame7) >> 577 BT_UART_MSG_FRAME7CONNECTABLE_POS); 578 } 579 580 static bool iwlagn_set_kill_msk(struct iwl_priv *priv, 581 struct iwl_bt_uart_msg *uart_msg) 582 { 583 bool need_update = false; 584 u8 kill_msk = IWL_BT_KILL_REDUCE; 585 static const __le32 bt_kill_ack_msg[3] = { 586 IWLAGN_BT_KILL_ACK_MASK_DEFAULT, 587 IWLAGN_BT_KILL_ACK_CTS_MASK_SCO, 588 IWLAGN_BT_KILL_ACK_CTS_MASK_REDUCE}; 589 static const __le32 bt_kill_cts_msg[3] = { 590 IWLAGN_BT_KILL_CTS_MASK_DEFAULT, 591 IWLAGN_BT_KILL_ACK_CTS_MASK_SCO, 592 IWLAGN_BT_KILL_ACK_CTS_MASK_REDUCE}; 593 594 if (!priv->reduced_txpower) 595 kill_msk = (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3) 596 ? IWL_BT_KILL_OVERRIDE : IWL_BT_KILL_DEFAULT; 597 if (priv->kill_ack_mask != bt_kill_ack_msg[kill_msk] || 598 priv->kill_cts_mask != bt_kill_cts_msg[kill_msk]) { 599 priv->bt_valid |= IWLAGN_BT_VALID_KILL_ACK_MASK; 600 priv->kill_ack_mask = bt_kill_ack_msg[kill_msk]; 601 priv->bt_valid |= IWLAGN_BT_VALID_KILL_CTS_MASK; 602 priv->kill_cts_mask = bt_kill_cts_msg[kill_msk]; 603 need_update = true; 604 } 605 return need_update; 606 } 607 608 /* 609 * Upon RSSI changes, sends a bt config command with following changes 610 * 1. enable/disable "reduced control frames tx power 611 * 2. update the "kill)ack_mask" and "kill_cts_mask" 612 * 613 * If "reduced tx power" is enabled, uCode shall 614 * 1. ACK/Back/CTS rate shall reduced to 6Mbps 615 * 2. not use duplciate 20/40MHz mode 616 */ 617 static bool iwlagn_fill_txpower_mode(struct iwl_priv *priv, 618 struct iwl_bt_uart_msg *uart_msg) 619 { 620 bool need_update = false; 621 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; 622 int ave_rssi; 623 624 if (!ctx->vif || (ctx->vif->type != NL80211_IFTYPE_STATION)) { 625 IWL_DEBUG_INFO(priv, "BSS ctx not active or not in sta mode\n"); 626 return false; 627 } 628 629 ave_rssi = ieee80211_ave_rssi(ctx->vif); 630 if (!ave_rssi) { 631 /* no rssi data, no changes to reduce tx power */ 632 IWL_DEBUG_COEX(priv, "no rssi data available\n"); 633 return need_update; 634 } 635 if (!priv->reduced_txpower && 636 !iwl_is_associated(priv, IWL_RXON_CTX_PAN) && 637 (ave_rssi > BT_ENABLE_REDUCED_TXPOWER_THRESHOLD) && 638 (uart_msg->frame3 & (BT_UART_MSG_FRAME3ACL_MSK | 639 BT_UART_MSG_FRAME3OBEX_MSK)) && 640 !(uart_msg->frame3 & (BT_UART_MSG_FRAME3SCOESCO_MSK | 641 BT_UART_MSG_FRAME3SNIFF_MSK | BT_UART_MSG_FRAME3A2DP_MSK))) { 642 /* enabling reduced tx power */ 643 priv->reduced_txpower = true; 644 priv->bt_valid |= IWLAGN_BT_VALID_REDUCED_TX_PWR; 645 need_update = true; 646 } else if (priv->reduced_txpower && 647 (iwl_is_associated(priv, IWL_RXON_CTX_PAN) || 648 (ave_rssi < BT_DISABLE_REDUCED_TXPOWER_THRESHOLD) || 649 (uart_msg->frame3 & (BT_UART_MSG_FRAME3SCOESCO_MSK | 650 BT_UART_MSG_FRAME3SNIFF_MSK | BT_UART_MSG_FRAME3A2DP_MSK)) || 651 !(uart_msg->frame3 & (BT_UART_MSG_FRAME3ACL_MSK | 652 BT_UART_MSG_FRAME3OBEX_MSK)))) { 653 /* disable reduced tx power */ 654 priv->reduced_txpower = false; 655 priv->bt_valid |= IWLAGN_BT_VALID_REDUCED_TX_PWR; 656 need_update = true; 657 } 658 659 return need_update; 660 } 661 662 static void iwlagn_bt_coex_profile_notif(struct iwl_priv *priv, 663 struct iwl_rx_cmd_buffer *rxb) 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; 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 } 717 718 void iwlagn_bt_rx_handler_setup(struct iwl_priv *priv) 719 { 720 priv->rx_handlers[REPLY_BT_COEX_PROFILE_NOTIF] = 721 iwlagn_bt_coex_profile_notif; 722 } 723 724 void iwlagn_bt_setup_deferred_work(struct iwl_priv *priv) 725 { 726 INIT_WORK(&priv->bt_traffic_change_work, 727 iwlagn_bt_traffic_change_work); 728 } 729 730 void iwlagn_bt_cancel_deferred_work(struct iwl_priv *priv) 731 { 732 cancel_work_sync(&priv->bt_traffic_change_work); 733 } 734 735 static bool is_single_rx_stream(struct iwl_priv *priv) 736 { 737 return priv->current_ht_config.smps == IEEE80211_SMPS_STATIC || 738 priv->current_ht_config.single_chain_sufficient; 739 } 740 741 #define IWL_NUM_RX_CHAINS_MULTIPLE 3 742 #define IWL_NUM_RX_CHAINS_SINGLE 2 743 #define IWL_NUM_IDLE_CHAINS_DUAL 2 744 #define IWL_NUM_IDLE_CHAINS_SINGLE 1 745 746 /* 747 * Determine how many receiver/antenna chains to use. 748 * 749 * More provides better reception via diversity. Fewer saves power 750 * at the expense of throughput, but only when not in powersave to 751 * start with. 752 * 753 * MIMO (dual stream) requires at least 2, but works better with 3. 754 * This does not determine *which* chains to use, just how many. 755 */ 756 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv) 757 { 758 if (priv->lib->bt_params && 759 priv->lib->bt_params->advanced_bt_coexist && 760 (priv->bt_full_concurrent || 761 priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) { 762 /* 763 * only use chain 'A' in bt high traffic load or 764 * full concurrency mode 765 */ 766 return IWL_NUM_RX_CHAINS_SINGLE; 767 } 768 /* # of Rx chains to use when expecting MIMO. */ 769 if (is_single_rx_stream(priv)) 770 return IWL_NUM_RX_CHAINS_SINGLE; 771 else 772 return IWL_NUM_RX_CHAINS_MULTIPLE; 773 } 774 775 /* 776 * When we are in power saving mode, unless device support spatial 777 * multiplexing power save, use the active count for rx chain count. 778 */ 779 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt) 780 { 781 /* # Rx chains when idling, depending on SMPS mode */ 782 switch (priv->current_ht_config.smps) { 783 case IEEE80211_SMPS_STATIC: 784 case IEEE80211_SMPS_DYNAMIC: 785 return IWL_NUM_IDLE_CHAINS_SINGLE; 786 case IEEE80211_SMPS_AUTOMATIC: 787 case IEEE80211_SMPS_OFF: 788 return active_cnt; 789 default: 790 WARN(1, "invalid SMPS mode %d", 791 priv->current_ht_config.smps); 792 return active_cnt; 793 } 794 } 795 796 /* up to 4 chains */ 797 static u8 iwl_count_chain_bitmap(u32 chain_bitmap) 798 { 799 u8 res; 800 res = (chain_bitmap & BIT(0)) >> 0; 801 res += (chain_bitmap & BIT(1)) >> 1; 802 res += (chain_bitmap & BIT(2)) >> 2; 803 res += (chain_bitmap & BIT(3)) >> 3; 804 return res; 805 } 806 807 /** 808 * iwlagn_set_rxon_chain - Set up Rx chain usage in "staging" RXON image 809 * 810 * Selects how many and which Rx receivers/antennas/chains to use. 811 * This should not be used for scan command ... it puts data in wrong place. 812 */ 813 void iwlagn_set_rxon_chain(struct iwl_priv *priv, struct iwl_rxon_context *ctx) 814 { 815 bool is_single = is_single_rx_stream(priv); 816 bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status); 817 u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt; 818 u32 active_chains; 819 u16 rx_chain; 820 821 /* Tell uCode which antennas are actually connected. 822 * Before first association, we assume all antennas are connected. 823 * Just after first association, iwl_chain_noise_calibration() 824 * checks which antennas actually *are* connected. */ 825 if (priv->chain_noise_data.active_chains) 826 active_chains = priv->chain_noise_data.active_chains; 827 else 828 active_chains = priv->nvm_data->valid_rx_ant; 829 830 if (priv->lib->bt_params && 831 priv->lib->bt_params->advanced_bt_coexist && 832 (priv->bt_full_concurrent || 833 priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) { 834 /* 835 * only use chain 'A' in bt high traffic load or 836 * full concurrency mode 837 */ 838 active_chains = first_antenna(active_chains); 839 } 840 841 rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS; 842 843 /* How many receivers should we use? */ 844 active_rx_cnt = iwl_get_active_rx_chain_count(priv); 845 idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt); 846 847 848 /* correct rx chain count according hw settings 849 * and chain noise calibration 850 */ 851 valid_rx_cnt = iwl_count_chain_bitmap(active_chains); 852 if (valid_rx_cnt < active_rx_cnt) 853 active_rx_cnt = valid_rx_cnt; 854 855 if (valid_rx_cnt < idle_rx_cnt) 856 idle_rx_cnt = valid_rx_cnt; 857 858 rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS; 859 rx_chain |= idle_rx_cnt << RXON_RX_CHAIN_CNT_POS; 860 861 ctx->staging.rx_chain = cpu_to_le16(rx_chain); 862 863 if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam) 864 ctx->staging.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK; 865 else 866 ctx->staging.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK; 867 868 IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n", 869 ctx->staging.rx_chain, 870 active_rx_cnt, idle_rx_cnt); 871 872 WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 || 873 active_rx_cnt < idle_rx_cnt); 874 } 875 876 u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant, u8 valid) 877 { 878 int i; 879 u8 ind = ant; 880 881 if (priv->band == NL80211_BAND_2GHZ && 882 priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH) 883 return 0; 884 885 for (i = 0; i < RATE_ANT_NUM - 1; i++) { 886 ind = (ind + 1) < RATE_ANT_NUM ? ind + 1 : 0; 887 if (valid & BIT(ind)) 888 return ind; 889 } 890 return ant; 891 } 892 893 #ifdef CONFIG_PM_SLEEP 894 static void iwlagn_convert_p1k(u16 *p1k, __le16 *out) 895 { 896 int i; 897 898 for (i = 0; i < IWLAGN_P1K_SIZE; i++) 899 out[i] = cpu_to_le16(p1k[i]); 900 } 901 902 struct wowlan_key_data { 903 struct iwl_rxon_context *ctx; 904 struct iwlagn_wowlan_rsc_tsc_params_cmd *rsc_tsc; 905 struct iwlagn_wowlan_tkip_params_cmd *tkip; 906 const u8 *bssid; 907 bool error, use_rsc_tsc, use_tkip; 908 }; 909 910 911 static void iwlagn_wowlan_program_keys(struct ieee80211_hw *hw, 912 struct ieee80211_vif *vif, 913 struct ieee80211_sta *sta, 914 struct ieee80211_key_conf *key, 915 void *_data) 916 { 917 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); 918 struct wowlan_key_data *data = _data; 919 struct iwl_rxon_context *ctx = data->ctx; 920 struct aes_sc *aes_sc, *aes_tx_sc = NULL; 921 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL; 922 struct iwlagn_p1k_cache *rx_p1ks; 923 u8 *rx_mic_key; 924 struct ieee80211_key_seq seq; 925 u32 cur_rx_iv32 = 0; 926 u16 p1k[IWLAGN_P1K_SIZE]; 927 int ret, i; 928 929 mutex_lock(&priv->mutex); 930 931 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 || 932 key->cipher == WLAN_CIPHER_SUITE_WEP104) && 933 !sta && !ctx->key_mapping_keys) 934 ret = iwl_set_default_wep_key(priv, ctx, key); 935 else 936 ret = iwl_set_dynamic_key(priv, ctx, key, sta); 937 938 if (ret) { 939 IWL_ERR(priv, "Error setting key during suspend!\n"); 940 data->error = true; 941 } 942 943 switch (key->cipher) { 944 case WLAN_CIPHER_SUITE_TKIP: 945 if (sta) { 946 u64 pn64; 947 948 tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc; 949 tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc; 950 951 rx_p1ks = data->tkip->rx_uni; 952 953 pn64 = atomic64_read(&key->tx_pn); 954 tkip_tx_sc->iv16 = cpu_to_le16(TKIP_PN_TO_IV16(pn64)); 955 tkip_tx_sc->iv32 = cpu_to_le32(TKIP_PN_TO_IV32(pn64)); 956 957 ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k); 958 iwlagn_convert_p1k(p1k, data->tkip->tx.p1k); 959 960 memcpy(data->tkip->mic_keys.tx, 961 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], 962 IWLAGN_MIC_KEY_SIZE); 963 964 rx_mic_key = data->tkip->mic_keys.rx_unicast; 965 } else { 966 tkip_sc = 967 data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc; 968 rx_p1ks = data->tkip->rx_multi; 969 rx_mic_key = data->tkip->mic_keys.rx_mcast; 970 } 971 972 /* 973 * For non-QoS this relies on the fact that both the uCode and 974 * mac80211 use TID 0 (as they need to to avoid replay attacks) 975 * for checking the IV in the frames. 976 */ 977 for (i = 0; i < IWLAGN_NUM_RSC; i++) { 978 ieee80211_get_key_rx_seq(key, i, &seq); 979 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16); 980 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32); 981 /* wrapping isn't allowed, AP must rekey */ 982 if (seq.tkip.iv32 > cur_rx_iv32) 983 cur_rx_iv32 = seq.tkip.iv32; 984 } 985 986 ieee80211_get_tkip_rx_p1k(key, data->bssid, cur_rx_iv32, p1k); 987 iwlagn_convert_p1k(p1k, rx_p1ks[0].p1k); 988 ieee80211_get_tkip_rx_p1k(key, data->bssid, 989 cur_rx_iv32 + 1, p1k); 990 iwlagn_convert_p1k(p1k, rx_p1ks[1].p1k); 991 992 memcpy(rx_mic_key, 993 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], 994 IWLAGN_MIC_KEY_SIZE); 995 996 data->use_tkip = true; 997 data->use_rsc_tsc = true; 998 break; 999 case WLAN_CIPHER_SUITE_CCMP: 1000 if (sta) { 1001 u64 pn64; 1002 1003 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc; 1004 aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc; 1005 1006 pn64 = atomic64_read(&key->tx_pn); 1007 aes_tx_sc->pn = cpu_to_le64(pn64); 1008 } else 1009 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc; 1010 1011 /* 1012 * For non-QoS this relies on the fact that both the uCode and 1013 * mac80211 use TID 0 for checking the IV in the frames. 1014 */ 1015 for (i = 0; i < IWLAGN_NUM_RSC; i++) { 1016 u8 *pn = seq.ccmp.pn; 1017 1018 ieee80211_get_key_rx_seq(key, i, &seq); 1019 aes_sc[i].pn = cpu_to_le64( 1020 (u64)pn[5] | 1021 ((u64)pn[4] << 8) | 1022 ((u64)pn[3] << 16) | 1023 ((u64)pn[2] << 24) | 1024 ((u64)pn[1] << 32) | 1025 ((u64)pn[0] << 40)); 1026 } 1027 data->use_rsc_tsc = true; 1028 break; 1029 } 1030 1031 mutex_unlock(&priv->mutex); 1032 } 1033 1034 int iwlagn_send_patterns(struct iwl_priv *priv, 1035 struct cfg80211_wowlan *wowlan) 1036 { 1037 struct iwlagn_wowlan_patterns_cmd *pattern_cmd; 1038 struct iwl_host_cmd cmd = { 1039 .id = REPLY_WOWLAN_PATTERNS, 1040 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1041 }; 1042 int i, err; 1043 1044 if (!wowlan->n_patterns) 1045 return 0; 1046 1047 cmd.len[0] = sizeof(*pattern_cmd) + 1048 wowlan->n_patterns * sizeof(struct iwlagn_wowlan_pattern); 1049 1050 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL); 1051 if (!pattern_cmd) 1052 return -ENOMEM; 1053 1054 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns); 1055 1056 for (i = 0; i < wowlan->n_patterns; i++) { 1057 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8); 1058 1059 memcpy(&pattern_cmd->patterns[i].mask, 1060 wowlan->patterns[i].mask, mask_len); 1061 memcpy(&pattern_cmd->patterns[i].pattern, 1062 wowlan->patterns[i].pattern, 1063 wowlan->patterns[i].pattern_len); 1064 pattern_cmd->patterns[i].mask_size = mask_len; 1065 pattern_cmd->patterns[i].pattern_size = 1066 wowlan->patterns[i].pattern_len; 1067 } 1068 1069 cmd.data[0] = pattern_cmd; 1070 err = iwl_dvm_send_cmd(priv, &cmd); 1071 kfree(pattern_cmd); 1072 return err; 1073 } 1074 1075 int iwlagn_suspend(struct iwl_priv *priv, struct cfg80211_wowlan *wowlan) 1076 { 1077 struct iwlagn_wowlan_wakeup_filter_cmd wakeup_filter_cmd; 1078 struct iwl_rxon_cmd rxon; 1079 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; 1080 struct iwlagn_wowlan_kek_kck_material_cmd kek_kck_cmd; 1081 struct iwlagn_wowlan_tkip_params_cmd tkip_cmd = {}; 1082 struct iwlagn_d3_config_cmd d3_cfg_cmd = { 1083 /* 1084 * Program the minimum sleep time to 10 seconds, as many 1085 * platforms have issues processing a wakeup signal while 1086 * still being in the process of suspending. 1087 */ 1088 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000), 1089 }; 1090 struct wowlan_key_data key_data = { 1091 .ctx = ctx, 1092 .bssid = ctx->active.bssid_addr, 1093 .use_rsc_tsc = false, 1094 .tkip = &tkip_cmd, 1095 .use_tkip = false, 1096 }; 1097 int ret, i; 1098 u16 seq; 1099 1100 key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL); 1101 if (!key_data.rsc_tsc) 1102 return -ENOMEM; 1103 1104 memset(&wakeup_filter_cmd, 0, sizeof(wakeup_filter_cmd)); 1105 1106 /* 1107 * We know the last used seqno, and the uCode expects to know that 1108 * one, it will increment before TX. 1109 */ 1110 seq = le16_to_cpu(priv->last_seq_ctl) & IEEE80211_SCTL_SEQ; 1111 wakeup_filter_cmd.non_qos_seq = cpu_to_le16(seq); 1112 1113 /* 1114 * For QoS counters, we store the one to use next, so subtract 0x10 1115 * since the uCode will add 0x10 before using the value. 1116 */ 1117 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1118 seq = priv->tid_data[IWL_AP_ID][i].seq_number; 1119 seq -= 0x10; 1120 wakeup_filter_cmd.qos_seq[i] = cpu_to_le16(seq); 1121 } 1122 1123 if (wowlan->disconnect) 1124 wakeup_filter_cmd.enabled |= 1125 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_BEACON_MISS | 1126 IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE); 1127 if (wowlan->magic_pkt) 1128 wakeup_filter_cmd.enabled |= 1129 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET); 1130 if (wowlan->gtk_rekey_failure) 1131 wakeup_filter_cmd.enabled |= 1132 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL); 1133 if (wowlan->eap_identity_req) 1134 wakeup_filter_cmd.enabled |= 1135 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ); 1136 if (wowlan->four_way_handshake) 1137 wakeup_filter_cmd.enabled |= 1138 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE); 1139 if (wowlan->n_patterns) 1140 wakeup_filter_cmd.enabled |= 1141 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH); 1142 1143 if (wowlan->rfkill_release) 1144 d3_cfg_cmd.wakeup_flags |= 1145 cpu_to_le32(IWLAGN_D3_WAKEUP_RFKILL); 1146 1147 iwl_scan_cancel_timeout(priv, 200); 1148 1149 memcpy(&rxon, &ctx->active, sizeof(rxon)); 1150 1151 priv->ucode_loaded = false; 1152 iwl_trans_stop_device(priv->trans); 1153 ret = iwl_trans_start_hw(priv->trans); 1154 if (ret) 1155 goto out; 1156 1157 priv->wowlan = true; 1158 1159 ret = iwl_load_ucode_wait_alive(priv, IWL_UCODE_WOWLAN); 1160 if (ret) 1161 goto out; 1162 1163 /* now configure WoWLAN ucode */ 1164 ret = iwl_alive_start(priv); 1165 if (ret) 1166 goto out; 1167 1168 memcpy(&ctx->staging, &rxon, sizeof(rxon)); 1169 ret = iwlagn_commit_rxon(priv, ctx); 1170 if (ret) 1171 goto out; 1172 1173 ret = iwl_power_update_mode(priv, true); 1174 if (ret) 1175 goto out; 1176 1177 if (!iwlwifi_mod_params.sw_crypto) { 1178 /* mark all keys clear */ 1179 priv->ucode_key_table = 0; 1180 ctx->key_mapping_keys = 0; 1181 1182 /* 1183 * This needs to be unlocked due to lock ordering 1184 * constraints. Since we're in the suspend path 1185 * that isn't really a problem though. 1186 */ 1187 mutex_unlock(&priv->mutex); 1188 ieee80211_iter_keys(priv->hw, ctx->vif, 1189 iwlagn_wowlan_program_keys, 1190 &key_data); 1191 mutex_lock(&priv->mutex); 1192 if (key_data.error) { 1193 ret = -EIO; 1194 goto out; 1195 } 1196 1197 if (key_data.use_rsc_tsc) { 1198 struct iwl_host_cmd rsc_tsc_cmd = { 1199 .id = REPLY_WOWLAN_TSC_RSC_PARAMS, 1200 .data[0] = key_data.rsc_tsc, 1201 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1202 .len[0] = sizeof(*key_data.rsc_tsc), 1203 }; 1204 1205 ret = iwl_dvm_send_cmd(priv, &rsc_tsc_cmd); 1206 if (ret) 1207 goto out; 1208 } 1209 1210 if (key_data.use_tkip) { 1211 ret = iwl_dvm_send_cmd_pdu(priv, 1212 REPLY_WOWLAN_TKIP_PARAMS, 1213 0, sizeof(tkip_cmd), 1214 &tkip_cmd); 1215 if (ret) 1216 goto out; 1217 } 1218 1219 if (priv->have_rekey_data) { 1220 memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd)); 1221 memcpy(kek_kck_cmd.kck, priv->kck, NL80211_KCK_LEN); 1222 kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN); 1223 memcpy(kek_kck_cmd.kek, priv->kek, NL80211_KEK_LEN); 1224 kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN); 1225 kek_kck_cmd.replay_ctr = priv->replay_ctr; 1226 1227 ret = iwl_dvm_send_cmd_pdu(priv, 1228 REPLY_WOWLAN_KEK_KCK_MATERIAL, 1229 0, sizeof(kek_kck_cmd), 1230 &kek_kck_cmd); 1231 if (ret) 1232 goto out; 1233 } 1234 } 1235 1236 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_D3_CONFIG, 0, 1237 sizeof(d3_cfg_cmd), &d3_cfg_cmd); 1238 if (ret) 1239 goto out; 1240 1241 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_WOWLAN_WAKEUP_FILTER, 1242 0, sizeof(wakeup_filter_cmd), 1243 &wakeup_filter_cmd); 1244 if (ret) 1245 goto out; 1246 1247 ret = iwlagn_send_patterns(priv, wowlan); 1248 out: 1249 kfree(key_data.rsc_tsc); 1250 return ret; 1251 } 1252 #endif 1253 1254 int iwl_dvm_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd) 1255 { 1256 if (iwl_is_rfkill(priv) || iwl_is_ctkill(priv)) { 1257 IWL_WARN(priv, "Not sending command - %s KILL\n", 1258 iwl_is_rfkill(priv) ? "RF" : "CT"); 1259 return -EIO; 1260 } 1261 1262 if (test_bit(STATUS_FW_ERROR, &priv->status)) { 1263 IWL_ERR(priv, "Command %s failed: FW Error\n", 1264 iwl_get_cmd_string(priv->trans, cmd->id)); 1265 return -EIO; 1266 } 1267 1268 /* 1269 * This can happen upon FW ASSERT: we clear the STATUS_FW_ERROR flag 1270 * in iwl_down but cancel the workers only later. 1271 */ 1272 if (!priv->ucode_loaded) { 1273 IWL_ERR(priv, "Fw not loaded - dropping CMD: %x\n", cmd->id); 1274 return -EIO; 1275 } 1276 1277 /* 1278 * Synchronous commands from this op-mode must hold 1279 * the mutex, this ensures we don't try to send two 1280 * (or more) synchronous commands at a time. 1281 */ 1282 if (!(cmd->flags & CMD_ASYNC)) 1283 lockdep_assert_held(&priv->mutex); 1284 1285 return iwl_trans_send_cmd(priv->trans, cmd); 1286 } 1287 1288 int iwl_dvm_send_cmd_pdu(struct iwl_priv *priv, u8 id, 1289 u32 flags, u16 len, const void *data) 1290 { 1291 struct iwl_host_cmd cmd = { 1292 .id = id, 1293 .len = { len, }, 1294 .data = { data, }, 1295 .flags = flags, 1296 }; 1297 1298 return iwl_dvm_send_cmd(priv, &cmd); 1299 } 1300