1/****************************************************************************** 2 * 3 * This file is provided under a dual BSD/GPLv2 license. When using or 4 * redistributing this file, you may do so under either license. 5 * 6 * GPL LICENSE SUMMARY 7 * 8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of version 2 of the GNU General Public License as 13 * published by the Free Software Foundation. 14 * 15 * This program is distributed in the hope that it will be useful, but 16 * WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 18 * General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, 23 * USA 24 * 25 * The full GNU General Public License is included in this distribution 26 * in the file called COPYING. 27 * 28 * Contact Information: 29 * Intel Linux Wireless <ilw@linux.intel.com> 30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 31 * 32 * BSD LICENSE 33 * 34 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 35 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH 36 * All rights reserved. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 42 * * Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * * Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in 46 * the documentation and/or other materials provided with the 47 * distribution. 48 * * Neither the name Intel Corporation nor the names of its 49 * contributors may be used to endorse or promote products derived 50 * from this software without specific prior written permission. 51 * 52 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 53 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 54 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 55 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 56 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 57 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 58 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 62 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 63 * 64 *****************************************************************************/ 65#include <linux/module.h> 66#include <linux/vmalloc.h> 67#include <net/mac80211.h> 68 69#include "iwl-notif-wait.h" 70#include "iwl-trans.h" 71#include "iwl-op-mode.h" 72#include "iwl-fw.h" 73#include "iwl-debug.h" 74#include "iwl-drv.h" 75#include "iwl-modparams.h" 76#include "mvm.h" 77#include "iwl-phy-db.h" 78#include "iwl-eeprom-parse.h" 79#include "iwl-csr.h" 80#include "iwl-io.h" 81#include "iwl-prph.h" 82#include "rs.h" 83#include "fw-api-scan.h" 84#include "time-event.h" 85#include "iwl-fw-error-dump.h" 86 87/* 88 * module name, copyright, version, etc. 89 */ 90#define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux" 91 92#define DRV_VERSION IWLWIFI_VERSION 93 94MODULE_DESCRIPTION(DRV_DESCRIPTION); 95MODULE_VERSION(DRV_VERSION); 96MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR); 97MODULE_LICENSE("GPL"); 98 99static const struct iwl_op_mode_ops iwl_mvm_ops; 100 101struct iwl_mvm_mod_params iwlmvm_mod_params = { 102 .power_scheme = IWL_POWER_SCHEME_BPS, 103 /* rest of fields are 0 by default */ 104}; 105 106module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, S_IRUGO); 107MODULE_PARM_DESC(init_dbg, 108 "set to true to debug an ASSERT in INIT fw (default: false"); 109module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, S_IRUGO); 110MODULE_PARM_DESC(power_scheme, 111 "power management scheme: 1-active, 2-balanced, 3-low power, default: 2"); 112 113/* 114 * module init and exit functions 115 */ 116static int __init iwl_mvm_init(void) 117{ 118 int ret; 119 120 ret = iwl_mvm_rate_control_register(); 121 if (ret) { 122 pr_err("Unable to register rate control algorithm: %d\n", ret); 123 return ret; 124 } 125 126 ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops); 127 128 if (ret) { 129 pr_err("Unable to register MVM op_mode: %d\n", ret); 130 iwl_mvm_rate_control_unregister(); 131 } 132 133 return ret; 134} 135module_init(iwl_mvm_init); 136 137static void __exit iwl_mvm_exit(void) 138{ 139 iwl_opmode_deregister("iwlmvm"); 140 iwl_mvm_rate_control_unregister(); 141} 142module_exit(iwl_mvm_exit); 143 144static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode) 145{ 146 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 147 u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash; 148 u32 reg_val = 0; 149 150 radio_cfg_type = (mvm->fw->phy_config & FW_PHY_CFG_RADIO_TYPE) >> 151 FW_PHY_CFG_RADIO_TYPE_POS; 152 radio_cfg_step = (mvm->fw->phy_config & FW_PHY_CFG_RADIO_STEP) >> 153 FW_PHY_CFG_RADIO_STEP_POS; 154 radio_cfg_dash = (mvm->fw->phy_config & FW_PHY_CFG_RADIO_DASH) >> 155 FW_PHY_CFG_RADIO_DASH_POS; 156 157 /* SKU control */ 158 reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) << 159 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP; 160 reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) << 161 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH; 162 163 /* radio configuration */ 164 reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE; 165 reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP; 166 reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH; 167 168 WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) & 169 ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE); 170 171 /* 172 * TODO: Bits 7-8 of CSR in 8000 HW family set the ADC sampling, and 173 * shouldn't be set to any non-zero value. The same is supposed to be 174 * true of the other HW, but unsetting them (such as the 7260) causes 175 * automatic tests to fail on seemingly unrelated errors. Need to 176 * further investigate this, but for now we'll separate cases. 177 */ 178 if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000) 179 reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI; 180 181 iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG, 182 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH | 183 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP | 184 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE | 185 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP | 186 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH | 187 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI | 188 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI, 189 reg_val); 190 191 IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type, 192 radio_cfg_step, radio_cfg_dash); 193 194 /* 195 * W/A : NIC is stuck in a reset state after Early PCIe power off 196 * (PCIe power is lost before PERST# is asserted), causing ME FW 197 * to lose ownership and not being able to obtain it back. 198 */ 199 if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000) 200 iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG, 201 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS, 202 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS); 203} 204 205struct iwl_rx_handlers { 206 u8 cmd_id; 207 bool async; 208 int (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb, 209 struct iwl_device_cmd *cmd); 210}; 211 212#define RX_HANDLER(_cmd_id, _fn, _async) \ 213 { .cmd_id = _cmd_id , .fn = _fn , .async = _async } 214 215/* 216 * Handlers for fw notifications 217 * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME 218 * This list should be in order of frequency for performance purposes. 219 * 220 * The handler can be SYNC - this means that it will be called in the Rx path 221 * which can't acquire mvm->mutex. If the handler needs to hold mvm->mutex (and 222 * only in this case!), it should be set as ASYNC. In that case, it will be 223 * called from a worker with mvm->mutex held. 224 */ 225static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = { 226 RX_HANDLER(REPLY_RX_MPDU_CMD, iwl_mvm_rx_rx_mpdu, false), 227 RX_HANDLER(REPLY_RX_PHY_CMD, iwl_mvm_rx_rx_phy_cmd, false), 228 RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, false), 229 RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, false), 230 231 RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif, true), 232 RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif, true), 233 RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics, true), 234 RX_HANDLER(ANTENNA_COUPLING_NOTIFICATION, 235 iwl_mvm_rx_ant_coupling_notif, true), 236 237 RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif, false), 238 239 RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, false), 240 241 RX_HANDLER(SCAN_REQUEST_CMD, iwl_mvm_rx_scan_response, false), 242 RX_HANDLER(SCAN_COMPLETE_NOTIFICATION, iwl_mvm_rx_scan_complete, true), 243 RX_HANDLER(SCAN_OFFLOAD_COMPLETE, 244 iwl_mvm_rx_scan_offload_complete_notif, true), 245 RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_offload_results, 246 false), 247 248 RX_HANDLER(RADIO_VERSION_NOTIFICATION, iwl_mvm_rx_radio_ver, false), 249 RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif, false), 250 251 RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif, 252 false), 253 254 RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, false), 255 RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION, 256 iwl_mvm_power_uapsd_misbehaving_ap_notif, false), 257}; 258#undef RX_HANDLER 259#define CMD(x) [x] = #x 260 261static const char *const iwl_mvm_cmd_strings[REPLY_MAX] = { 262 CMD(MVM_ALIVE), 263 CMD(REPLY_ERROR), 264 CMD(INIT_COMPLETE_NOTIF), 265 CMD(PHY_CONTEXT_CMD), 266 CMD(MGMT_MCAST_KEY), 267 CMD(TX_CMD), 268 CMD(TXPATH_FLUSH), 269 CMD(MAC_CONTEXT_CMD), 270 CMD(TIME_EVENT_CMD), 271 CMD(TIME_EVENT_NOTIFICATION), 272 CMD(BINDING_CONTEXT_CMD), 273 CMD(TIME_QUOTA_CMD), 274 CMD(NON_QOS_TX_COUNTER_CMD), 275 CMD(RADIO_VERSION_NOTIFICATION), 276 CMD(SCAN_REQUEST_CMD), 277 CMD(SCAN_ABORT_CMD), 278 CMD(SCAN_START_NOTIFICATION), 279 CMD(SCAN_RESULTS_NOTIFICATION), 280 CMD(SCAN_COMPLETE_NOTIFICATION), 281 CMD(NVM_ACCESS_CMD), 282 CMD(PHY_CONFIGURATION_CMD), 283 CMD(CALIB_RES_NOTIF_PHY_DB), 284 CMD(SET_CALIB_DEFAULT_CMD), 285 CMD(CALIBRATION_COMPLETE_NOTIFICATION), 286 CMD(ADD_STA_KEY), 287 CMD(ADD_STA), 288 CMD(REMOVE_STA), 289 CMD(LQ_CMD), 290 CMD(SCAN_OFFLOAD_CONFIG_CMD), 291 CMD(MATCH_FOUND_NOTIFICATION), 292 CMD(SCAN_OFFLOAD_REQUEST_CMD), 293 CMD(SCAN_OFFLOAD_ABORT_CMD), 294 CMD(HOT_SPOT_CMD), 295 CMD(SCAN_OFFLOAD_COMPLETE), 296 CMD(SCAN_OFFLOAD_UPDATE_PROFILES_CMD), 297 CMD(SCAN_ITERATION_COMPLETE), 298 CMD(POWER_TABLE_CMD), 299 CMD(WEP_KEY), 300 CMD(REPLY_RX_PHY_CMD), 301 CMD(REPLY_RX_MPDU_CMD), 302 CMD(BEACON_NOTIFICATION), 303 CMD(BEACON_TEMPLATE_CMD), 304 CMD(STATISTICS_NOTIFICATION), 305 CMD(EOSP_NOTIFICATION), 306 CMD(REDUCE_TX_POWER_CMD), 307 CMD(TX_ANT_CONFIGURATION_CMD), 308 CMD(D3_CONFIG_CMD), 309 CMD(D0I3_END_CMD), 310 CMD(PROT_OFFLOAD_CONFIG_CMD), 311 CMD(OFFLOADS_QUERY_CMD), 312 CMD(REMOTE_WAKE_CONFIG_CMD), 313 CMD(WOWLAN_PATTERNS), 314 CMD(WOWLAN_CONFIGURATION), 315 CMD(WOWLAN_TSC_RSC_PARAM), 316 CMD(WOWLAN_TKIP_PARAM), 317 CMD(WOWLAN_KEK_KCK_MATERIAL), 318 CMD(WOWLAN_GET_STATUSES), 319 CMD(WOWLAN_TX_POWER_PER_DB), 320 CMD(NET_DETECT_CONFIG_CMD), 321 CMD(NET_DETECT_PROFILES_QUERY_CMD), 322 CMD(NET_DETECT_PROFILES_CMD), 323 CMD(NET_DETECT_HOTSPOTS_CMD), 324 CMD(NET_DETECT_HOTSPOTS_QUERY_CMD), 325 CMD(CARD_STATE_NOTIFICATION), 326 CMD(MISSED_BEACONS_NOTIFICATION), 327 CMD(BT_COEX_PRIO_TABLE), 328 CMD(BT_COEX_PROT_ENV), 329 CMD(BT_PROFILE_NOTIFICATION), 330 CMD(BT_CONFIG), 331 CMD(MCAST_FILTER_CMD), 332 CMD(BCAST_FILTER_CMD), 333 CMD(REPLY_SF_CFG_CMD), 334 CMD(REPLY_BEACON_FILTERING_CMD), 335 CMD(CMD_DTS_MEASUREMENT_TRIGGER), 336 CMD(DTS_MEASUREMENT_NOTIFICATION), 337 CMD(REPLY_THERMAL_MNG_BACKOFF), 338 CMD(MAC_PM_POWER_TABLE), 339 CMD(LTR_CONFIG), 340 CMD(BT_COEX_CI), 341 CMD(BT_COEX_UPDATE_SW_BOOST), 342 CMD(BT_COEX_UPDATE_CORUN_LUT), 343 CMD(BT_COEX_UPDATE_REDUCED_TXP), 344 CMD(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION), 345 CMD(ANTENNA_COUPLING_NOTIFICATION), 346 CMD(SCD_QUEUE_CFG), 347}; 348#undef CMD 349 350/* this forward declaration can avoid to export the function */ 351static void iwl_mvm_async_handlers_wk(struct work_struct *wk); 352static void iwl_mvm_d0i3_exit_work(struct work_struct *wk); 353 354static u32 calc_min_backoff(struct iwl_trans *trans, const struct iwl_cfg *cfg) 355{ 356 const struct iwl_pwr_tx_backoff *pwr_tx_backoff = cfg->pwr_tx_backoffs; 357 358 if (!pwr_tx_backoff) 359 return 0; 360 361 while (pwr_tx_backoff->pwr) { 362 if (trans->dflt_pwr_limit >= pwr_tx_backoff->pwr) 363 return pwr_tx_backoff->backoff; 364 365 pwr_tx_backoff++; 366 } 367 368 return 0; 369} 370 371static void iwl_mvm_fw_error_dump_wk(struct work_struct *work); 372 373static struct iwl_op_mode * 374iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg, 375 const struct iwl_fw *fw, struct dentry *dbgfs_dir) 376{ 377 struct ieee80211_hw *hw; 378 struct iwl_op_mode *op_mode; 379 struct iwl_mvm *mvm; 380 struct iwl_trans_config trans_cfg = {}; 381 static const u8 no_reclaim_cmds[] = { 382 TX_CMD, 383 }; 384 int err, scan_size; 385 u32 min_backoff; 386 387 /* 388 * We use IWL_MVM_STATION_COUNT to check the validity of the station 389 * index all over the driver - check that its value corresponds to the 390 * array size. 391 */ 392 BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT); 393 394 /******************************** 395 * 1. Allocating and configuring HW data 396 ********************************/ 397 hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) + 398 sizeof(struct iwl_mvm), 399 &iwl_mvm_hw_ops); 400 if (!hw) 401 return NULL; 402 403 if (cfg->max_rx_agg_size) 404 hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size; 405 406 op_mode = hw->priv; 407 op_mode->ops = &iwl_mvm_ops; 408 409 mvm = IWL_OP_MODE_GET_MVM(op_mode); 410 mvm->dev = trans->dev; 411 mvm->trans = trans; 412 mvm->cfg = cfg; 413 mvm->fw = fw; 414 mvm->hw = hw; 415 416 mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0; 417 418 mvm->aux_queue = 15; 419 mvm->first_agg_queue = 16; 420 mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1; 421 if (mvm->cfg->base_params->num_of_queues == 16) { 422 mvm->aux_queue = 11; 423 mvm->first_agg_queue = 12; 424 } 425 mvm->sf_state = SF_UNINIT; 426 mvm->low_latency_agg_frame_limit = 6; 427 mvm->cur_ucode = IWL_UCODE_INIT; 428 429 mutex_init(&mvm->mutex); 430 mutex_init(&mvm->d0i3_suspend_mutex); 431 spin_lock_init(&mvm->async_handlers_lock); 432 INIT_LIST_HEAD(&mvm->time_event_list); 433 INIT_LIST_HEAD(&mvm->aux_roc_te_list); 434 INIT_LIST_HEAD(&mvm->async_handlers_list); 435 spin_lock_init(&mvm->time_event_lock); 436 437 INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk); 438 INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk); 439 INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk); 440 INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work); 441 INIT_WORK(&mvm->fw_error_dump_wk, iwl_mvm_fw_error_dump_wk); 442 443 spin_lock_init(&mvm->d0i3_tx_lock); 444 spin_lock_init(&mvm->refs_lock); 445 skb_queue_head_init(&mvm->d0i3_tx); 446 init_waitqueue_head(&mvm->d0i3_exit_waitq); 447 448 SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev); 449 450 /* 451 * Populate the state variables that the transport layer needs 452 * to know about. 453 */ 454 trans_cfg.op_mode = op_mode; 455 trans_cfg.no_reclaim_cmds = no_reclaim_cmds; 456 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds); 457 trans_cfg.rx_buf_size_8k = iwlwifi_mod_params.amsdu_size_8K; 458 459 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DW_BC_TABLE) 460 trans_cfg.bc_table_dword = true; 461 462 if (!iwlwifi_mod_params.wd_disable) 463 trans_cfg.queue_watchdog_timeout = cfg->base_params->wd_timeout; 464 else 465 trans_cfg.queue_watchdog_timeout = IWL_WATCHDOG_DISABLED; 466 467 trans_cfg.command_names = iwl_mvm_cmd_strings; 468 469 trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE; 470 trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD; 471 trans_cfg.scd_set_active = true; 472 473 snprintf(mvm->hw->wiphy->fw_version, 474 sizeof(mvm->hw->wiphy->fw_version), 475 "%s", fw->fw_version); 476 477 /* Configure transport layer */ 478 iwl_trans_configure(mvm->trans, &trans_cfg); 479 480 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD; 481 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start); 482 483 /* set up notification wait support */ 484 iwl_notification_wait_init(&mvm->notif_wait); 485 486 /* Init phy db */ 487 mvm->phy_db = iwl_phy_db_init(trans); 488 if (!mvm->phy_db) { 489 IWL_ERR(mvm, "Cannot init phy_db\n"); 490 goto out_free; 491 } 492 493 IWL_INFO(mvm, "Detected %s, REV=0x%X\n", 494 mvm->cfg->name, mvm->trans->hw_rev); 495 496 min_backoff = calc_min_backoff(trans, cfg); 497 iwl_mvm_tt_initialize(mvm, min_backoff); 498 /* set the nvm_file_name according to priority */ 499 if (iwlwifi_mod_params.nvm_file) 500 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file; 501 else 502 mvm->nvm_file_name = mvm->cfg->default_nvm_file; 503 504 if (WARN(cfg->no_power_up_nic_in_init && !mvm->nvm_file_name, 505 "not allowing power-up and not having nvm_file\n")) 506 goto out_free; 507 508 /* 509 * Even if nvm exists in the nvm_file driver should read again the nvm 510 * from the nic because there might be entries that exist in the OTP 511 * and not in the file. 512 * for nics with no_power_up_nic_in_init: rely completley on nvm_file 513 */ 514 if (cfg->no_power_up_nic_in_init && mvm->nvm_file_name) { 515 err = iwl_nvm_init(mvm, false); 516 if (err) 517 goto out_free; 518 } else { 519 err = iwl_trans_start_hw(mvm->trans); 520 if (err) 521 goto out_free; 522 523 mutex_lock(&mvm->mutex); 524 err = iwl_run_init_mvm_ucode(mvm, true); 525 iwl_trans_stop_device(trans); 526 mutex_unlock(&mvm->mutex); 527 /* returns 0 if successful, 1 if success but in rfkill */ 528 if (err < 0 && !iwlmvm_mod_params.init_dbg) { 529 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err); 530 goto out_free; 531 } 532 } 533 534 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) 535 scan_size = sizeof(struct iwl_scan_req_unified_lmac) + 536 sizeof(struct iwl_scan_channel_cfg_lmac) * 537 mvm->fw->ucode_capa.n_scan_channels + 538 sizeof(struct iwl_scan_probe_req); 539 else 540 scan_size = sizeof(struct iwl_scan_cmd) + 541 mvm->fw->ucode_capa.max_probe_length + 542 mvm->fw->ucode_capa.n_scan_channels * 543 sizeof(struct iwl_scan_channel); 544 545 mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL); 546 if (!mvm->scan_cmd) 547 goto out_free; 548 549 err = iwl_mvm_mac_setup_register(mvm); 550 if (err) 551 goto out_free; 552 553 err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir); 554 if (err) 555 goto out_unregister; 556 557 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx)); 558 559 /* rpm starts with a taken ref. only set the appropriate bit here. */ 560 mvm->refs[IWL_MVM_REF_UCODE_DOWN] = 1; 561 562 return op_mode; 563 564 out_unregister: 565 ieee80211_unregister_hw(mvm->hw); 566 iwl_mvm_leds_exit(mvm); 567 out_free: 568 iwl_phy_db_free(mvm->phy_db); 569 kfree(mvm->scan_cmd); 570 if (!cfg->no_power_up_nic_in_init || !mvm->nvm_file_name) 571 iwl_trans_op_mode_leave(trans); 572 ieee80211_free_hw(mvm->hw); 573 return NULL; 574} 575 576static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode) 577{ 578 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 579 int i; 580 581 iwl_mvm_leds_exit(mvm); 582 583 iwl_mvm_tt_exit(mvm); 584 585 ieee80211_unregister_hw(mvm->hw); 586 587 kfree(mvm->scan_cmd); 588 if (mvm->fw_error_dump) { 589 vfree(mvm->fw_error_dump->op_mode_ptr); 590 vfree(mvm->fw_error_dump->trans_ptr); 591 kfree(mvm->fw_error_dump); 592 } 593 kfree(mvm->mcast_filter_cmd); 594 mvm->mcast_filter_cmd = NULL; 595 596#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS) 597 kfree(mvm->d3_resume_sram); 598#endif 599 600 iwl_trans_op_mode_leave(mvm->trans); 601 602 iwl_phy_db_free(mvm->phy_db); 603 mvm->phy_db = NULL; 604 605 iwl_free_nvm_data(mvm->nvm_data); 606 for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++) 607 kfree(mvm->nvm_sections[i].data); 608 609 ieee80211_free_hw(mvm->hw); 610} 611 612struct iwl_async_handler_entry { 613 struct list_head list; 614 struct iwl_rx_cmd_buffer rxb; 615 int (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb, 616 struct iwl_device_cmd *cmd); 617}; 618 619void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm) 620{ 621 struct iwl_async_handler_entry *entry, *tmp; 622 623 spin_lock_bh(&mvm->async_handlers_lock); 624 list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) { 625 iwl_free_rxb(&entry->rxb); 626 list_del(&entry->list); 627 kfree(entry); 628 } 629 spin_unlock_bh(&mvm->async_handlers_lock); 630} 631 632static void iwl_mvm_async_handlers_wk(struct work_struct *wk) 633{ 634 struct iwl_mvm *mvm = 635 container_of(wk, struct iwl_mvm, async_handlers_wk); 636 struct iwl_async_handler_entry *entry, *tmp; 637 struct list_head local_list; 638 639 INIT_LIST_HEAD(&local_list); 640 641 /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */ 642 mutex_lock(&mvm->mutex); 643 644 /* 645 * Sync with Rx path with a lock. Remove all the entries from this list, 646 * add them to a local one (lock free), and then handle them. 647 */ 648 spin_lock_bh(&mvm->async_handlers_lock); 649 list_splice_init(&mvm->async_handlers_list, &local_list); 650 spin_unlock_bh(&mvm->async_handlers_lock); 651 652 list_for_each_entry_safe(entry, tmp, &local_list, list) { 653 if (entry->fn(mvm, &entry->rxb, NULL)) 654 IWL_WARN(mvm, 655 "returned value from ASYNC handlers are ignored\n"); 656 iwl_free_rxb(&entry->rxb); 657 list_del(&entry->list); 658 kfree(entry); 659 } 660 mutex_unlock(&mvm->mutex); 661} 662 663static int iwl_mvm_rx_dispatch(struct iwl_op_mode *op_mode, 664 struct iwl_rx_cmd_buffer *rxb, 665 struct iwl_device_cmd *cmd) 666{ 667 struct iwl_rx_packet *pkt = rxb_addr(rxb); 668 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 669 u8 i; 670 671 /* 672 * Do the notification wait before RX handlers so 673 * even if the RX handler consumes the RXB we have 674 * access to it in the notification wait entry. 675 */ 676 iwl_notification_wait_notify(&mvm->notif_wait, pkt); 677 678 for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) { 679 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i]; 680 struct iwl_async_handler_entry *entry; 681 682 if (rx_h->cmd_id != pkt->hdr.cmd) 683 continue; 684 685 if (!rx_h->async) 686 return rx_h->fn(mvm, rxb, cmd); 687 688 entry = kzalloc(sizeof(*entry), GFP_ATOMIC); 689 /* we can't do much... */ 690 if (!entry) 691 return 0; 692 693 entry->rxb._page = rxb_steal_page(rxb); 694 entry->rxb._offset = rxb->_offset; 695 entry->rxb._rx_page_order = rxb->_rx_page_order; 696 entry->fn = rx_h->fn; 697 spin_lock(&mvm->async_handlers_lock); 698 list_add_tail(&entry->list, &mvm->async_handlers_list); 699 spin_unlock(&mvm->async_handlers_lock); 700 schedule_work(&mvm->async_handlers_wk); 701 break; 702 } 703 704 return 0; 705} 706 707static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int queue) 708{ 709 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 710 int mq = mvm->queue_to_mac80211[queue]; 711 712 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE)) 713 return; 714 715 if (atomic_inc_return(&mvm->mac80211_queue_stop_count[mq]) > 1) { 716 IWL_DEBUG_TX_QUEUES(mvm, 717 "queue %d (mac80211 %d) already stopped\n", 718 queue, mq); 719 return; 720 } 721 722 ieee80211_stop_queue(mvm->hw, mq); 723} 724 725static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int queue) 726{ 727 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 728 int mq = mvm->queue_to_mac80211[queue]; 729 730 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE)) 731 return; 732 733 if (atomic_dec_return(&mvm->mac80211_queue_stop_count[mq]) > 0) { 734 IWL_DEBUG_TX_QUEUES(mvm, 735 "queue %d (mac80211 %d) still stopped\n", 736 queue, mq); 737 return; 738 } 739 740 ieee80211_wake_queue(mvm->hw, mq); 741} 742 743void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state) 744{ 745 if (state) 746 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); 747 else 748 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); 749 750 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm)); 751} 752 753static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state) 754{ 755 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 756 bool calibrating = ACCESS_ONCE(mvm->calibrating); 757 758 if (state) 759 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); 760 else 761 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); 762 763 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm)); 764 765 /* iwl_run_init_mvm_ucode is waiting for results, abort it */ 766 if (calibrating) 767 iwl_abort_notification_waits(&mvm->notif_wait); 768 769 /* 770 * Stop the device if we run OPERATIONAL firmware or if we are in the 771 * middle of the calibrations. 772 */ 773 return state && (mvm->cur_ucode != IWL_UCODE_INIT || calibrating); 774} 775 776static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb) 777{ 778 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 779 struct ieee80211_tx_info *info; 780 781 info = IEEE80211_SKB_CB(skb); 782 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]); 783 ieee80211_free_txskb(mvm->hw, skb); 784} 785 786struct iwl_mvm_reprobe { 787 struct device *dev; 788 struct work_struct work; 789}; 790 791static void iwl_mvm_reprobe_wk(struct work_struct *wk) 792{ 793 struct iwl_mvm_reprobe *reprobe; 794 795 reprobe = container_of(wk, struct iwl_mvm_reprobe, work); 796 if (device_reprobe(reprobe->dev)) 797 dev_err(reprobe->dev, "reprobe failed!\n"); 798 kfree(reprobe); 799 module_put(THIS_MODULE); 800} 801 802static void iwl_mvm_fw_error_dump_wk(struct work_struct *work) 803{ 804 struct iwl_mvm *mvm = 805 container_of(work, struct iwl_mvm, fw_error_dump_wk); 806 807 mutex_lock(&mvm->mutex); 808 iwl_mvm_fw_error_dump(mvm); 809 mutex_unlock(&mvm->mutex); 810} 811 812void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error) 813{ 814 iwl_abort_notification_waits(&mvm->notif_wait); 815 816 /* 817 * This is a bit racy, but worst case we tell mac80211 about 818 * a stopped/aborted scan when that was already done which 819 * is not a problem. It is necessary to abort any os scan 820 * here because mac80211 requires having the scan cleared 821 * before restarting. 822 * We'll reset the scan_status to NONE in restart cleanup in 823 * the next start() call from mac80211. If restart isn't called 824 * (no fw restart) scan status will stay busy. 825 */ 826 switch (mvm->scan_status) { 827 case IWL_MVM_SCAN_NONE: 828 break; 829 case IWL_MVM_SCAN_OS: 830 ieee80211_scan_completed(mvm->hw, true); 831 break; 832 case IWL_MVM_SCAN_SCHED: 833 /* Sched scan will be restarted by mac80211 in restart_hw. */ 834 if (!mvm->restart_fw) 835 ieee80211_sched_scan_stopped(mvm->hw); 836 break; 837 } 838 839 /* 840 * If we're restarting already, don't cycle restarts. 841 * If INIT fw asserted, it will likely fail again. 842 * If WoWLAN fw asserted, don't restart either, mac80211 843 * can't recover this since we're already half suspended. 844 */ 845 if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 846 struct iwl_mvm_reprobe *reprobe; 847 848 IWL_ERR(mvm, 849 "Firmware error during reconfiguration - reprobe!\n"); 850 851 /* 852 * get a module reference to avoid doing this while unloading 853 * anyway and to avoid scheduling a work with code that's 854 * being removed. 855 */ 856 if (!try_module_get(THIS_MODULE)) { 857 IWL_ERR(mvm, "Module is being unloaded - abort\n"); 858 return; 859 } 860 861 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC); 862 if (!reprobe) { 863 module_put(THIS_MODULE); 864 return; 865 } 866 reprobe->dev = mvm->trans->dev; 867 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk); 868 schedule_work(&reprobe->work); 869 } else if (mvm->cur_ucode == IWL_UCODE_REGULAR && 870 (!fw_error || mvm->restart_fw)) { 871 /* don't let the transport/FW power down */ 872 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); 873 874 if (fw_error && mvm->restart_fw > 0) 875 mvm->restart_fw--; 876 ieee80211_restart_hw(mvm->hw); 877 } else if (fw_error) { 878 schedule_work(&mvm->fw_error_dump_wk); 879 } 880} 881 882static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode) 883{ 884 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 885 886 iwl_mvm_dump_nic_error_log(mvm); 887 888 iwl_mvm_nic_restart(mvm, true); 889} 890 891static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode) 892{ 893 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 894 895 WARN_ON(1); 896 iwl_mvm_nic_restart(mvm, true); 897} 898 899struct iwl_d0i3_iter_data { 900 struct iwl_mvm *mvm; 901 u8 ap_sta_id; 902 u8 vif_count; 903 u8 offloading_tid; 904 bool disable_offloading; 905}; 906 907static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm, 908 struct ieee80211_vif *vif, 909 struct iwl_d0i3_iter_data *iter_data) 910{ 911 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 912 struct ieee80211_sta *ap_sta; 913 struct iwl_mvm_sta *mvmsta; 914 u32 available_tids = 0; 915 u8 tid; 916 917 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION || 918 mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT)) 919 return false; 920 921 ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id]); 922 if (IS_ERR_OR_NULL(ap_sta)) 923 return false; 924 925 mvmsta = iwl_mvm_sta_from_mac80211(ap_sta); 926 spin_lock_bh(&mvmsta->lock); 927 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 928 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 929 930 /* 931 * in case of pending tx packets, don't use this tid 932 * for offloading in order to prevent reuse of the same 933 * qos seq counters. 934 */ 935 if (iwl_mvm_tid_queued(tid_data)) 936 continue; 937 938 if (tid_data->state != IWL_AGG_OFF) 939 continue; 940 941 available_tids |= BIT(tid); 942 } 943 spin_unlock_bh(&mvmsta->lock); 944 945 /* 946 * disallow protocol offloading if we have no available tid 947 * (with no pending frames and no active aggregation, 948 * as we don't handle "holes" properly - the scheduler needs the 949 * frame's seq number and TFD index to match) 950 */ 951 if (!available_tids) 952 return true; 953 954 /* for simplicity, just use the first available tid */ 955 iter_data->offloading_tid = ffs(available_tids) - 1; 956 return false; 957} 958 959static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac, 960 struct ieee80211_vif *vif) 961{ 962 struct iwl_d0i3_iter_data *data = _data; 963 struct iwl_mvm *mvm = data->mvm; 964 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 965 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; 966 967 IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr); 968 if (vif->type != NL80211_IFTYPE_STATION || 969 !vif->bss_conf.assoc) 970 return; 971 972 /* 973 * in case of pending tx packets or active aggregations, 974 * avoid offloading features in order to prevent reuse of 975 * the same qos seq counters. 976 */ 977 if (iwl_mvm_disallow_offloading(mvm, vif, data)) 978 data->disable_offloading = true; 979 980 iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags); 981 iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading, flags); 982 983 /* 984 * on init/association, mvm already configures POWER_TABLE_CMD 985 * and REPLY_MCAST_FILTER_CMD, so currently don't 986 * reconfigure them (we might want to use different 987 * params later on, though). 988 */ 989 data->ap_sta_id = mvmvif->ap_sta_id; 990 data->vif_count++; 991} 992 993static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm, 994 struct iwl_wowlan_config_cmd_v3 *cmd, 995 struct iwl_d0i3_iter_data *iter_data) 996{ 997 struct ieee80211_sta *ap_sta; 998 struct iwl_mvm_sta *mvm_ap_sta; 999 1000 if (iter_data->ap_sta_id == IWL_MVM_STATION_COUNT) 1001 return; 1002 1003 rcu_read_lock(); 1004 1005 ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]); 1006 if (IS_ERR_OR_NULL(ap_sta)) 1007 goto out; 1008 1009 mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta); 1010 cmd->common.is_11n_connection = ap_sta->ht_cap.ht_supported; 1011 cmd->offloading_tid = iter_data->offloading_tid; 1012 1013 /* 1014 * The d0i3 uCode takes care of the nonqos counters, 1015 * so configure only the qos seq ones. 1016 */ 1017 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, &cmd->common); 1018out: 1019 rcu_read_unlock(); 1020} 1021static int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode) 1022{ 1023 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1024 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; 1025 int ret; 1026 struct iwl_d0i3_iter_data d0i3_iter_data = { 1027 .mvm = mvm, 1028 }; 1029 struct iwl_wowlan_config_cmd_v3 wowlan_config_cmd = { 1030 .common = { 1031 .wakeup_filter = 1032 cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME | 1033 IWL_WOWLAN_WAKEUP_BEACON_MISS | 1034 IWL_WOWLAN_WAKEUP_LINK_CHANGE | 1035 IWL_WOWLAN_WAKEUP_BCN_FILTERING), 1036 }, 1037 }; 1038 struct iwl_d3_manager_config d3_cfg_cmd = { 1039 .min_sleep_time = cpu_to_le32(1000), 1040 }; 1041 1042 IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n"); 1043 1044 /* make sure we have no running tx while configuring the qos */ 1045 set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1046 synchronize_net(); 1047 1048 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1049 IEEE80211_IFACE_ITER_NORMAL, 1050 iwl_mvm_enter_d0i3_iterator, 1051 &d0i3_iter_data); 1052 if (d0i3_iter_data.vif_count == 1) { 1053 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id; 1054 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading; 1055 } else { 1056 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1); 1057 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; 1058 mvm->d0i3_offloading = false; 1059 } 1060 1061 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd, &d0i3_iter_data); 1062 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags, 1063 sizeof(wowlan_config_cmd), 1064 &wowlan_config_cmd); 1065 if (ret) 1066 return ret; 1067 1068 return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD, 1069 flags | CMD_MAKE_TRANS_IDLE, 1070 sizeof(d3_cfg_cmd), &d3_cfg_cmd); 1071} 1072 1073static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac, 1074 struct ieee80211_vif *vif) 1075{ 1076 struct iwl_mvm *mvm = _data; 1077 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO; 1078 1079 IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr); 1080 if (vif->type != NL80211_IFTYPE_STATION || 1081 !vif->bss_conf.assoc) 1082 return; 1083 1084 iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags); 1085} 1086 1087static void iwl_mvm_d0i3_disconnect_iter(void *data, u8 *mac, 1088 struct ieee80211_vif *vif) 1089{ 1090 struct iwl_mvm *mvm = data; 1091 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1092 1093 if (vif->type == NL80211_IFTYPE_STATION && vif->bss_conf.assoc && 1094 mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id) 1095 ieee80211_connection_loss(vif); 1096} 1097 1098void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq) 1099{ 1100 struct ieee80211_sta *sta = NULL; 1101 struct iwl_mvm_sta *mvm_ap_sta; 1102 int i; 1103 bool wake_queues = false; 1104 1105 lockdep_assert_held(&mvm->mutex); 1106 1107 spin_lock_bh(&mvm->d0i3_tx_lock); 1108 1109 if (mvm->d0i3_ap_sta_id == IWL_MVM_STATION_COUNT) 1110 goto out; 1111 1112 IWL_DEBUG_RPM(mvm, "re-enqueue packets\n"); 1113 1114 /* get the sta in order to update seq numbers and re-enqueue skbs */ 1115 sta = rcu_dereference_protected( 1116 mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id], 1117 lockdep_is_held(&mvm->mutex)); 1118 1119 if (IS_ERR_OR_NULL(sta)) { 1120 sta = NULL; 1121 goto out; 1122 } 1123 1124 if (mvm->d0i3_offloading && qos_seq) { 1125 /* update qos seq numbers if offloading was enabled */ 1126 mvm_ap_sta = (struct iwl_mvm_sta *)sta->drv_priv; 1127 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1128 u16 seq = le16_to_cpu(qos_seq[i]); 1129 /* firmware stores last-used one, we store next one */ 1130 seq += 0x10; 1131 mvm_ap_sta->tid_data[i].seq_number = seq; 1132 } 1133 } 1134out: 1135 /* re-enqueue (or drop) all packets */ 1136 while (!skb_queue_empty(&mvm->d0i3_tx)) { 1137 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx); 1138 1139 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta)) 1140 ieee80211_free_txskb(mvm->hw, skb); 1141 1142 /* if the skb_queue is not empty, we need to wake queues */ 1143 wake_queues = true; 1144 } 1145 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1146 wake_up(&mvm->d0i3_exit_waitq); 1147 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; 1148 if (wake_queues) 1149 ieee80211_wake_queues(mvm->hw); 1150 1151 spin_unlock_bh(&mvm->d0i3_tx_lock); 1152} 1153 1154static void iwl_mvm_d0i3_exit_work(struct work_struct *wk) 1155{ 1156 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work); 1157 struct iwl_host_cmd get_status_cmd = { 1158 .id = WOWLAN_GET_STATUSES, 1159 .flags = CMD_HIGH_PRIO | CMD_WANT_SKB, 1160 }; 1161 struct iwl_wowlan_status *status; 1162 int ret; 1163 u32 disconnection_reasons, wakeup_reasons; 1164 __le16 *qos_seq = NULL; 1165 1166 mutex_lock(&mvm->mutex); 1167 ret = iwl_mvm_send_cmd(mvm, &get_status_cmd); 1168 if (ret) 1169 goto out; 1170 1171 if (!get_status_cmd.resp_pkt) 1172 goto out; 1173 1174 status = (void *)get_status_cmd.resp_pkt->data; 1175 wakeup_reasons = le32_to_cpu(status->wakeup_reasons); 1176 qos_seq = status->qos_seq_ctr; 1177 1178 IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons); 1179 1180 disconnection_reasons = 1181 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 1182 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH; 1183 if (wakeup_reasons & disconnection_reasons) 1184 ieee80211_iterate_active_interfaces( 1185 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1186 iwl_mvm_d0i3_disconnect_iter, mvm); 1187 1188 iwl_free_resp(&get_status_cmd); 1189out: 1190 iwl_mvm_d0i3_enable_tx(mvm, qos_seq); 1191 iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK); 1192 mutex_unlock(&mvm->mutex); 1193} 1194 1195int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm) 1196{ 1197 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE | 1198 CMD_WAKE_UP_TRANS; 1199 int ret; 1200 1201 IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n"); 1202 1203 mutex_lock(&mvm->d0i3_suspend_mutex); 1204 if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) { 1205 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n"); 1206 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags); 1207 mutex_unlock(&mvm->d0i3_suspend_mutex); 1208 return 0; 1209 } 1210 mutex_unlock(&mvm->d0i3_suspend_mutex); 1211 1212 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL); 1213 if (ret) 1214 goto out; 1215 1216 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1217 IEEE80211_IFACE_ITER_NORMAL, 1218 iwl_mvm_exit_d0i3_iterator, 1219 mvm); 1220out: 1221 schedule_work(&mvm->d0i3_exit_work); 1222 return ret; 1223} 1224 1225static int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode) 1226{ 1227 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1228 1229 iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK); 1230 return _iwl_mvm_exit_d0i3(mvm); 1231} 1232 1233static void iwl_mvm_napi_add(struct iwl_op_mode *op_mode, 1234 struct napi_struct *napi, 1235 struct net_device *napi_dev, 1236 int (*poll)(struct napi_struct *, int), 1237 int weight) 1238{ 1239 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1240 1241 ieee80211_napi_add(mvm->hw, napi, napi_dev, poll, weight); 1242} 1243 1244static const struct iwl_op_mode_ops iwl_mvm_ops = { 1245 .start = iwl_op_mode_mvm_start, 1246 .stop = iwl_op_mode_mvm_stop, 1247 .rx = iwl_mvm_rx_dispatch, 1248 .queue_full = iwl_mvm_stop_sw_queue, 1249 .queue_not_full = iwl_mvm_wake_sw_queue, 1250 .hw_rf_kill = iwl_mvm_set_hw_rfkill_state, 1251 .free_skb = iwl_mvm_free_skb, 1252 .nic_error = iwl_mvm_nic_error, 1253 .cmd_queue_full = iwl_mvm_cmd_queue_full, 1254 .nic_config = iwl_mvm_nic_config, 1255 .enter_d0i3 = iwl_mvm_enter_d0i3, 1256 .exit_d0i3 = iwl_mvm_exit_d0i3, 1257 .napi_add = iwl_mvm_napi_add, 1258}; 1259