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 86#define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux" 87MODULE_DESCRIPTION(DRV_DESCRIPTION); 88MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR); 89MODULE_LICENSE("GPL"); 90 91static const struct iwl_op_mode_ops iwl_mvm_ops; 92 93struct iwl_mvm_mod_params iwlmvm_mod_params = { 94 .power_scheme = IWL_POWER_SCHEME_BPS, 95 .tfd_q_hang_detect = true 96 /* rest of fields are 0 by default */ 97}; 98 99module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, S_IRUGO); 100MODULE_PARM_DESC(init_dbg, 101 "set to true to debug an ASSERT in INIT fw (default: false"); 102module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, S_IRUGO); 103MODULE_PARM_DESC(power_scheme, 104 "power management scheme: 1-active, 2-balanced, 3-low power, default: 2"); 105module_param_named(tfd_q_hang_detect, iwlmvm_mod_params.tfd_q_hang_detect, 106 bool, S_IRUGO); 107MODULE_PARM_DESC(tfd_q_hang_detect, 108 "TFD queues hang detection (default: true"); 109 110/* 111 * module init and exit functions 112 */ 113static int __init iwl_mvm_init(void) 114{ 115 int ret; 116 117 ret = iwl_mvm_rate_control_register(); 118 if (ret) { 119 pr_err("Unable to register rate control algorithm: %d\n", ret); 120 return ret; 121 } 122 123 ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops); 124 125 if (ret) { 126 pr_err("Unable to register MVM op_mode: %d\n", ret); 127 iwl_mvm_rate_control_unregister(); 128 } 129 130 return ret; 131} 132module_init(iwl_mvm_init); 133 134static void __exit iwl_mvm_exit(void) 135{ 136 iwl_opmode_deregister("iwlmvm"); 137 iwl_mvm_rate_control_unregister(); 138} 139module_exit(iwl_mvm_exit); 140 141static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode) 142{ 143 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 144 u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash; 145 u32 reg_val = 0; 146 u32 phy_config = iwl_mvm_get_phy_config(mvm); 147 148 radio_cfg_type = (phy_config & FW_PHY_CFG_RADIO_TYPE) >> 149 FW_PHY_CFG_RADIO_TYPE_POS; 150 radio_cfg_step = (phy_config & FW_PHY_CFG_RADIO_STEP) >> 151 FW_PHY_CFG_RADIO_STEP_POS; 152 radio_cfg_dash = (phy_config & FW_PHY_CFG_RADIO_DASH) >> 153 FW_PHY_CFG_RADIO_DASH_POS; 154 155 /* SKU control */ 156 reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) << 157 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP; 158 reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) << 159 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH; 160 161 /* radio configuration */ 162 reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE; 163 reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP; 164 reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH; 165 166 WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) & 167 ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE); 168 169 /* 170 * TODO: Bits 7-8 of CSR in 8000 HW family set the ADC sampling, and 171 * shouldn't be set to any non-zero value. The same is supposed to be 172 * true of the other HW, but unsetting them (such as the 7260) causes 173 * automatic tests to fail on seemingly unrelated errors. Need to 174 * further investigate this, but for now we'll separate cases. 175 */ 176 if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000) 177 reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI; 178 179 iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG, 180 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH | 181 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP | 182 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE | 183 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP | 184 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH | 185 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI | 186 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI, 187 reg_val); 188 189 IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type, 190 radio_cfg_step, radio_cfg_dash); 191 192 /* 193 * W/A : NIC is stuck in a reset state after Early PCIe power off 194 * (PCIe power is lost before PERST# is asserted), causing ME FW 195 * to lose ownership and not being able to obtain it back. 196 */ 197 if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000) 198 iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG, 199 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS, 200 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS); 201} 202 203struct iwl_rx_handlers { 204 u8 cmd_id; 205 bool async; 206 int (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb, 207 struct iwl_device_cmd *cmd); 208}; 209 210#define RX_HANDLER(_cmd_id, _fn, _async) \ 211 { .cmd_id = _cmd_id , .fn = _fn , .async = _async } 212 213/* 214 * Handlers for fw notifications 215 * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME 216 * This list should be in order of frequency for performance purposes. 217 * 218 * The handler can be SYNC - this means that it will be called in the Rx path 219 * which can't acquire mvm->mutex. If the handler needs to hold mvm->mutex (and 220 * only in this case!), it should be set as ASYNC. In that case, it will be 221 * called from a worker with mvm->mutex held. 222 */ 223static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = { 224 RX_HANDLER(REPLY_RX_MPDU_CMD, iwl_mvm_rx_rx_mpdu, false), 225 RX_HANDLER(REPLY_RX_PHY_CMD, iwl_mvm_rx_rx_phy_cmd, false), 226 RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, false), 227 RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, false), 228 229 RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif, true), 230 RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif, true), 231 RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics, true), 232 RX_HANDLER(ANTENNA_COUPLING_NOTIFICATION, 233 iwl_mvm_rx_ant_coupling_notif, true), 234 235 RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif, false), 236 RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc, true), 237 238 RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, false), 239 240 RX_HANDLER(SCAN_ITERATION_COMPLETE, 241 iwl_mvm_rx_scan_offload_iter_complete_notif, false), 242 RX_HANDLER(SCAN_OFFLOAD_COMPLETE, 243 iwl_mvm_rx_scan_offload_complete_notif, true), 244 RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_offload_results, 245 false), 246 RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif, 247 true), 248 249 RX_HANDLER(RADIO_VERSION_NOTIFICATION, iwl_mvm_rx_radio_ver, false), 250 RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif, false), 251 252 RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif, 253 false), 254 255 RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, false), 256 RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION, 257 iwl_mvm_power_uapsd_misbehaving_ap_notif, false), 258 RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif, true), 259 260 RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif, 261 true), 262 RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif, false), 263 264}; 265#undef RX_HANDLER 266#define CMD(x) [x] = #x 267 268static const char *const iwl_mvm_cmd_strings[REPLY_MAX] = { 269 CMD(MVM_ALIVE), 270 CMD(REPLY_ERROR), 271 CMD(INIT_COMPLETE_NOTIF), 272 CMD(PHY_CONTEXT_CMD), 273 CMD(MGMT_MCAST_KEY), 274 CMD(TX_CMD), 275 CMD(TXPATH_FLUSH), 276 CMD(SHARED_MEM_CFG), 277 CMD(MAC_CONTEXT_CMD), 278 CMD(TIME_EVENT_CMD), 279 CMD(TIME_EVENT_NOTIFICATION), 280 CMD(BINDING_CONTEXT_CMD), 281 CMD(TIME_QUOTA_CMD), 282 CMD(NON_QOS_TX_COUNTER_CMD), 283 CMD(RADIO_VERSION_NOTIFICATION), 284 CMD(SCAN_REQUEST_CMD), 285 CMD(SCAN_ABORT_CMD), 286 CMD(SCAN_START_NOTIFICATION), 287 CMD(SCAN_RESULTS_NOTIFICATION), 288 CMD(SCAN_COMPLETE_NOTIFICATION), 289 CMD(NVM_ACCESS_CMD), 290 CMD(PHY_CONFIGURATION_CMD), 291 CMD(CALIB_RES_NOTIF_PHY_DB), 292 CMD(SET_CALIB_DEFAULT_CMD), 293 CMD(CALIBRATION_COMPLETE_NOTIFICATION), 294 CMD(ADD_STA_KEY), 295 CMD(ADD_STA), 296 CMD(REMOVE_STA), 297 CMD(LQ_CMD), 298 CMD(SCAN_OFFLOAD_CONFIG_CMD), 299 CMD(MATCH_FOUND_NOTIFICATION), 300 CMD(SCAN_OFFLOAD_REQUEST_CMD), 301 CMD(SCAN_OFFLOAD_ABORT_CMD), 302 CMD(HOT_SPOT_CMD), 303 CMD(SCAN_OFFLOAD_COMPLETE), 304 CMD(SCAN_OFFLOAD_UPDATE_PROFILES_CMD), 305 CMD(SCAN_ITERATION_COMPLETE), 306 CMD(POWER_TABLE_CMD), 307 CMD(WEP_KEY), 308 CMD(REPLY_RX_PHY_CMD), 309 CMD(REPLY_RX_MPDU_CMD), 310 CMD(BEACON_NOTIFICATION), 311 CMD(BEACON_TEMPLATE_CMD), 312 CMD(STATISTICS_CMD), 313 CMD(STATISTICS_NOTIFICATION), 314 CMD(EOSP_NOTIFICATION), 315 CMD(REDUCE_TX_POWER_CMD), 316 CMD(TX_ANT_CONFIGURATION_CMD), 317 CMD(D3_CONFIG_CMD), 318 CMD(D0I3_END_CMD), 319 CMD(PROT_OFFLOAD_CONFIG_CMD), 320 CMD(OFFLOADS_QUERY_CMD), 321 CMD(REMOTE_WAKE_CONFIG_CMD), 322 CMD(WOWLAN_PATTERNS), 323 CMD(WOWLAN_CONFIGURATION), 324 CMD(WOWLAN_TSC_RSC_PARAM), 325 CMD(WOWLAN_TKIP_PARAM), 326 CMD(WOWLAN_KEK_KCK_MATERIAL), 327 CMD(WOWLAN_GET_STATUSES), 328 CMD(WOWLAN_TX_POWER_PER_DB), 329 CMD(SCAN_OFFLOAD_PROFILES_QUERY_CMD), 330 CMD(SCAN_OFFLOAD_HOTSPOTS_CONFIG_CMD), 331 CMD(SCAN_OFFLOAD_HOTSPOTS_QUERY_CMD), 332 CMD(CARD_STATE_NOTIFICATION), 333 CMD(MISSED_BEACONS_NOTIFICATION), 334 CMD(BT_COEX_PRIO_TABLE), 335 CMD(BT_COEX_PROT_ENV), 336 CMD(BT_PROFILE_NOTIFICATION), 337 CMD(BT_CONFIG), 338 CMD(MCAST_FILTER_CMD), 339 CMD(BCAST_FILTER_CMD), 340 CMD(REPLY_SF_CFG_CMD), 341 CMD(REPLY_BEACON_FILTERING_CMD), 342 CMD(CMD_DTS_MEASUREMENT_TRIGGER), 343 CMD(DTS_MEASUREMENT_NOTIFICATION), 344 CMD(REPLY_THERMAL_MNG_BACKOFF), 345 CMD(MAC_PM_POWER_TABLE), 346 CMD(LTR_CONFIG), 347 CMD(BT_COEX_CI), 348 CMD(BT_COEX_UPDATE_SW_BOOST), 349 CMD(BT_COEX_UPDATE_CORUN_LUT), 350 CMD(BT_COEX_UPDATE_REDUCED_TXP), 351 CMD(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION), 352 CMD(ANTENNA_COUPLING_NOTIFICATION), 353 CMD(SCD_QUEUE_CFG), 354 CMD(SCAN_CFG_CMD), 355 CMD(SCAN_REQ_UMAC), 356 CMD(SCAN_ABORT_UMAC), 357 CMD(SCAN_COMPLETE_UMAC), 358 CMD(TDLS_CHANNEL_SWITCH_CMD), 359 CMD(TDLS_CHANNEL_SWITCH_NOTIFICATION), 360 CMD(TDLS_CONFIG_CMD), 361 CMD(MCC_UPDATE_CMD), 362}; 363#undef CMD 364 365/* this forward declaration can avoid to export the function */ 366static void iwl_mvm_async_handlers_wk(struct work_struct *wk); 367static void iwl_mvm_d0i3_exit_work(struct work_struct *wk); 368 369static u32 calc_min_backoff(struct iwl_trans *trans, const struct iwl_cfg *cfg) 370{ 371 const struct iwl_pwr_tx_backoff *pwr_tx_backoff = cfg->pwr_tx_backoffs; 372 373 if (!pwr_tx_backoff) 374 return 0; 375 376 while (pwr_tx_backoff->pwr) { 377 if (trans->dflt_pwr_limit >= pwr_tx_backoff->pwr) 378 return pwr_tx_backoff->backoff; 379 380 pwr_tx_backoff++; 381 } 382 383 return 0; 384} 385 386static void iwl_mvm_fw_error_dump_wk(struct work_struct *work); 387 388static struct iwl_op_mode * 389iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg, 390 const struct iwl_fw *fw, struct dentry *dbgfs_dir) 391{ 392 struct ieee80211_hw *hw; 393 struct iwl_op_mode *op_mode; 394 struct iwl_mvm *mvm; 395 struct iwl_trans_config trans_cfg = {}; 396 static const u8 no_reclaim_cmds[] = { 397 TX_CMD, 398 }; 399 int err, scan_size; 400 u32 min_backoff; 401 402 /* 403 * We use IWL_MVM_STATION_COUNT to check the validity of the station 404 * index all over the driver - check that its value corresponds to the 405 * array size. 406 */ 407 BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT); 408 409 /******************************** 410 * 1. Allocating and configuring HW data 411 ********************************/ 412 hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) + 413 sizeof(struct iwl_mvm), 414 &iwl_mvm_hw_ops); 415 if (!hw) 416 return NULL; 417 418 if (cfg->max_rx_agg_size) 419 hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size; 420 421 if (cfg->max_tx_agg_size) 422 hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size; 423 424 op_mode = hw->priv; 425 op_mode->ops = &iwl_mvm_ops; 426 427 mvm = IWL_OP_MODE_GET_MVM(op_mode); 428 mvm->dev = trans->dev; 429 mvm->trans = trans; 430 mvm->cfg = cfg; 431 mvm->fw = fw; 432 mvm->hw = hw; 433 434 mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0; 435 436 mvm->aux_queue = 15; 437 mvm->first_agg_queue = 16; 438 mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1; 439 if (mvm->cfg->base_params->num_of_queues == 16) { 440 mvm->aux_queue = 11; 441 mvm->first_agg_queue = 12; 442 } 443 mvm->sf_state = SF_UNINIT; 444 mvm->low_latency_agg_frame_limit = 6; 445 mvm->cur_ucode = IWL_UCODE_INIT; 446 447 mutex_init(&mvm->mutex); 448 mutex_init(&mvm->d0i3_suspend_mutex); 449 spin_lock_init(&mvm->async_handlers_lock); 450 INIT_LIST_HEAD(&mvm->time_event_list); 451 INIT_LIST_HEAD(&mvm->aux_roc_te_list); 452 INIT_LIST_HEAD(&mvm->async_handlers_list); 453 spin_lock_init(&mvm->time_event_lock); 454 455 INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk); 456 INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk); 457 INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk); 458 INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work); 459 INIT_DELAYED_WORK(&mvm->fw_dump_wk, iwl_mvm_fw_error_dump_wk); 460 INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work); 461 462 spin_lock_init(&mvm->d0i3_tx_lock); 463 spin_lock_init(&mvm->refs_lock); 464 skb_queue_head_init(&mvm->d0i3_tx); 465 init_waitqueue_head(&mvm->d0i3_exit_waitq); 466 467 SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev); 468 469 /* 470 * Populate the state variables that the transport layer needs 471 * to know about. 472 */ 473 trans_cfg.op_mode = op_mode; 474 trans_cfg.no_reclaim_cmds = no_reclaim_cmds; 475 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds); 476 trans_cfg.rx_buf_size_8k = iwlwifi_mod_params.amsdu_size_8K; 477 478 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DW_BC_TABLE) 479 trans_cfg.bc_table_dword = true; 480 481 trans_cfg.command_names = iwl_mvm_cmd_strings; 482 483 trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE; 484 trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD; 485 trans_cfg.scd_set_active = true; 486 487 trans_cfg.sdio_adma_addr = fw->sdio_adma_addr; 488 489 /* Set a short watchdog for the command queue */ 490 trans_cfg.cmd_q_wdg_timeout = 491 iwl_mvm_get_wd_timeout(mvm, NULL, false, true); 492 493 snprintf(mvm->hw->wiphy->fw_version, 494 sizeof(mvm->hw->wiphy->fw_version), 495 "%s", fw->fw_version); 496 497 /* Configure transport layer */ 498 iwl_trans_configure(mvm->trans, &trans_cfg); 499 500 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD; 501 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start); 502 trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv; 503 trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num; 504 memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv, 505 sizeof(trans->dbg_conf_tlv)); 506 trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv; 507 508 /* set up notification wait support */ 509 iwl_notification_wait_init(&mvm->notif_wait); 510 511 /* Init phy db */ 512 mvm->phy_db = iwl_phy_db_init(trans); 513 if (!mvm->phy_db) { 514 IWL_ERR(mvm, "Cannot init phy_db\n"); 515 goto out_free; 516 } 517 518 IWL_INFO(mvm, "Detected %s, REV=0x%X\n", 519 mvm->cfg->name, mvm->trans->hw_rev); 520 521 min_backoff = calc_min_backoff(trans, cfg); 522 iwl_mvm_tt_initialize(mvm, min_backoff); 523 /* set the nvm_file_name according to priority */ 524 if (iwlwifi_mod_params.nvm_file) { 525 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file; 526 } else if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000) { 527 if (CSR_HW_REV_STEP(trans->hw_rev) == SILICON_B_STEP) 528 mvm->nvm_file_name = mvm->cfg->default_nvm_file_B_step; 529 else 530 mvm->nvm_file_name = mvm->cfg->default_nvm_file_C_step; 531 } 532 533 if (WARN(cfg->no_power_up_nic_in_init && !mvm->nvm_file_name, 534 "not allowing power-up and not having nvm_file\n")) 535 goto out_free; 536 537 /* 538 * Even if nvm exists in the nvm_file driver should read again the nvm 539 * from the nic because there might be entries that exist in the OTP 540 * and not in the file. 541 * for nics with no_power_up_nic_in_init: rely completley on nvm_file 542 */ 543 if (cfg->no_power_up_nic_in_init && mvm->nvm_file_name) { 544 err = iwl_nvm_init(mvm, false); 545 if (err) 546 goto out_free; 547 } else { 548 err = iwl_trans_start_hw(mvm->trans); 549 if (err) 550 goto out_free; 551 552 mutex_lock(&mvm->mutex); 553 err = iwl_run_init_mvm_ucode(mvm, true); 554 if (!err || !iwlmvm_mod_params.init_dbg) 555 iwl_trans_stop_device(trans); 556 mutex_unlock(&mvm->mutex); 557 /* returns 0 if successful, 1 if success but in rfkill */ 558 if (err < 0 && !iwlmvm_mod_params.init_dbg) { 559 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err); 560 goto out_free; 561 } 562 } 563 564 scan_size = iwl_mvm_scan_size(mvm); 565 566 mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL); 567 if (!mvm->scan_cmd) 568 goto out_free; 569 570 /* Set EBS as successful as long as not stated otherwise by the FW. */ 571 mvm->last_ebs_successful = true; 572 573 err = iwl_mvm_mac_setup_register(mvm); 574 if (err) 575 goto out_free; 576 577 err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir); 578 if (err) 579 goto out_unregister; 580 581 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx)); 582 583 /* rpm starts with a taken ref. only set the appropriate bit here. */ 584 mvm->refs[IWL_MVM_REF_UCODE_DOWN] = 1; 585 586 return op_mode; 587 588 out_unregister: 589 ieee80211_unregister_hw(mvm->hw); 590 iwl_mvm_leds_exit(mvm); 591 out_free: 592 flush_delayed_work(&mvm->fw_dump_wk); 593 iwl_phy_db_free(mvm->phy_db); 594 kfree(mvm->scan_cmd); 595 if (!cfg->no_power_up_nic_in_init || !mvm->nvm_file_name) 596 iwl_trans_op_mode_leave(trans); 597 ieee80211_free_hw(mvm->hw); 598 return NULL; 599} 600 601static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode) 602{ 603 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 604 int i; 605 606 iwl_mvm_leds_exit(mvm); 607 608 iwl_mvm_tt_exit(mvm); 609 610 ieee80211_unregister_hw(mvm->hw); 611 612 kfree(mvm->scan_cmd); 613 kfree(mvm->mcast_filter_cmd); 614 mvm->mcast_filter_cmd = NULL; 615 616#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS) 617 kfree(mvm->d3_resume_sram); 618 if (mvm->nd_config) { 619 kfree(mvm->nd_config->match_sets); 620 kfree(mvm->nd_config); 621 mvm->nd_config = NULL; 622 } 623#endif 624 625 iwl_trans_op_mode_leave(mvm->trans); 626 627 iwl_phy_db_free(mvm->phy_db); 628 mvm->phy_db = NULL; 629 630 iwl_free_nvm_data(mvm->nvm_data); 631 for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++) 632 kfree(mvm->nvm_sections[i].data); 633 634 ieee80211_free_hw(mvm->hw); 635} 636 637struct iwl_async_handler_entry { 638 struct list_head list; 639 struct iwl_rx_cmd_buffer rxb; 640 int (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb, 641 struct iwl_device_cmd *cmd); 642}; 643 644void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm) 645{ 646 struct iwl_async_handler_entry *entry, *tmp; 647 648 spin_lock_bh(&mvm->async_handlers_lock); 649 list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) { 650 iwl_free_rxb(&entry->rxb); 651 list_del(&entry->list); 652 kfree(entry); 653 } 654 spin_unlock_bh(&mvm->async_handlers_lock); 655} 656 657static void iwl_mvm_async_handlers_wk(struct work_struct *wk) 658{ 659 struct iwl_mvm *mvm = 660 container_of(wk, struct iwl_mvm, async_handlers_wk); 661 struct iwl_async_handler_entry *entry, *tmp; 662 struct list_head local_list; 663 664 INIT_LIST_HEAD(&local_list); 665 666 /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */ 667 mutex_lock(&mvm->mutex); 668 669 /* 670 * Sync with Rx path with a lock. Remove all the entries from this list, 671 * add them to a local one (lock free), and then handle them. 672 */ 673 spin_lock_bh(&mvm->async_handlers_lock); 674 list_splice_init(&mvm->async_handlers_list, &local_list); 675 spin_unlock_bh(&mvm->async_handlers_lock); 676 677 list_for_each_entry_safe(entry, tmp, &local_list, list) { 678 if (entry->fn(mvm, &entry->rxb, NULL)) 679 IWL_WARN(mvm, 680 "returned value from ASYNC handlers are ignored\n"); 681 iwl_free_rxb(&entry->rxb); 682 list_del(&entry->list); 683 kfree(entry); 684 } 685 mutex_unlock(&mvm->mutex); 686} 687 688static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm, 689 struct iwl_rx_packet *pkt) 690{ 691 struct iwl_fw_dbg_trigger_tlv *trig; 692 struct iwl_fw_dbg_trigger_cmd *cmds_trig; 693 int i; 694 695 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF)) 696 return; 697 698 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF); 699 cmds_trig = (void *)trig->data; 700 701 if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig)) 702 return; 703 704 for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) { 705 /* don't collect on CMD 0 */ 706 if (!cmds_trig->cmds[i].cmd_id) 707 break; 708 709 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd) 710 continue; 711 712 iwl_mvm_fw_dbg_collect_trig(mvm, trig, 713 "CMD 0x%02x received", 714 pkt->hdr.cmd); 715 break; 716 } 717} 718 719static int iwl_mvm_rx_dispatch(struct iwl_op_mode *op_mode, 720 struct iwl_rx_cmd_buffer *rxb, 721 struct iwl_device_cmd *cmd) 722{ 723 struct iwl_rx_packet *pkt = rxb_addr(rxb); 724 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 725 u8 i; 726 727 iwl_mvm_rx_check_trigger(mvm, pkt); 728 729 /* 730 * Do the notification wait before RX handlers so 731 * even if the RX handler consumes the RXB we have 732 * access to it in the notification wait entry. 733 */ 734 iwl_notification_wait_notify(&mvm->notif_wait, pkt); 735 736 for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) { 737 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i]; 738 struct iwl_async_handler_entry *entry; 739 740 if (rx_h->cmd_id != pkt->hdr.cmd) 741 continue; 742 743 if (!rx_h->async) 744 return rx_h->fn(mvm, rxb, cmd); 745 746 entry = kzalloc(sizeof(*entry), GFP_ATOMIC); 747 /* we can't do much... */ 748 if (!entry) 749 return 0; 750 751 entry->rxb._page = rxb_steal_page(rxb); 752 entry->rxb._offset = rxb->_offset; 753 entry->rxb._rx_page_order = rxb->_rx_page_order; 754 entry->fn = rx_h->fn; 755 spin_lock(&mvm->async_handlers_lock); 756 list_add_tail(&entry->list, &mvm->async_handlers_list); 757 spin_unlock(&mvm->async_handlers_lock); 758 schedule_work(&mvm->async_handlers_wk); 759 break; 760 } 761 762 return 0; 763} 764 765static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int queue) 766{ 767 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 768 int mq = mvm->queue_to_mac80211[queue]; 769 770 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE)) 771 return; 772 773 if (atomic_inc_return(&mvm->mac80211_queue_stop_count[mq]) > 1) { 774 IWL_DEBUG_TX_QUEUES(mvm, 775 "queue %d (mac80211 %d) already stopped\n", 776 queue, mq); 777 return; 778 } 779 780 ieee80211_stop_queue(mvm->hw, mq); 781} 782 783static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int queue) 784{ 785 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 786 int mq = mvm->queue_to_mac80211[queue]; 787 788 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE)) 789 return; 790 791 if (atomic_dec_return(&mvm->mac80211_queue_stop_count[mq]) > 0) { 792 IWL_DEBUG_TX_QUEUES(mvm, 793 "queue %d (mac80211 %d) still stopped\n", 794 queue, mq); 795 return; 796 } 797 798 ieee80211_wake_queue(mvm->hw, mq); 799} 800 801void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state) 802{ 803 if (state) 804 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); 805 else 806 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); 807 808 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm)); 809} 810 811static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state) 812{ 813 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 814 bool calibrating = ACCESS_ONCE(mvm->calibrating); 815 816 if (state) 817 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); 818 else 819 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); 820 821 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm)); 822 823 /* iwl_run_init_mvm_ucode is waiting for results, abort it */ 824 if (calibrating) 825 iwl_abort_notification_waits(&mvm->notif_wait); 826 827 /* 828 * Stop the device if we run OPERATIONAL firmware or if we are in the 829 * middle of the calibrations. 830 */ 831 return state && (mvm->cur_ucode != IWL_UCODE_INIT || calibrating); 832} 833 834static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb) 835{ 836 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 837 struct ieee80211_tx_info *info; 838 839 info = IEEE80211_SKB_CB(skb); 840 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]); 841 ieee80211_free_txskb(mvm->hw, skb); 842} 843 844struct iwl_mvm_reprobe { 845 struct device *dev; 846 struct work_struct work; 847}; 848 849static void iwl_mvm_reprobe_wk(struct work_struct *wk) 850{ 851 struct iwl_mvm_reprobe *reprobe; 852 853 reprobe = container_of(wk, struct iwl_mvm_reprobe, work); 854 if (device_reprobe(reprobe->dev)) 855 dev_err(reprobe->dev, "reprobe failed!\n"); 856 kfree(reprobe); 857 module_put(THIS_MODULE); 858} 859 860static void iwl_mvm_fw_error_dump_wk(struct work_struct *work) 861{ 862 struct iwl_mvm *mvm = 863 container_of(work, struct iwl_mvm, fw_dump_wk.work); 864 865 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT)) 866 return; 867 868 mutex_lock(&mvm->mutex); 869 870 /* stop recording */ 871 if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000) { 872 iwl_set_bits_prph(mvm->trans, MON_BUFF_SAMPLE_CTL, 0x100); 873 } else { 874 iwl_write_prph(mvm->trans, DBGC_IN_SAMPLE, 0); 875 /* wait before we collect the data till the DBGC stop */ 876 udelay(100); 877 } 878 879 iwl_mvm_fw_error_dump(mvm); 880 881 /* start recording again if the firmware is not crashed */ 882 WARN_ON_ONCE((!test_bit(STATUS_FW_ERROR, &mvm->trans->status)) && 883 mvm->fw->dbg_dest_tlv && 884 iwl_mvm_start_fw_dbg_conf(mvm, mvm->fw_dbg_conf)); 885 886 mutex_unlock(&mvm->mutex); 887 888 iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT); 889} 890 891void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error) 892{ 893 iwl_abort_notification_waits(&mvm->notif_wait); 894 895 /* 896 * This is a bit racy, but worst case we tell mac80211 about 897 * a stopped/aborted scan when that was already done which 898 * is not a problem. It is necessary to abort any os scan 899 * here because mac80211 requires having the scan cleared 900 * before restarting. 901 * We'll reset the scan_status to NONE in restart cleanup in 902 * the next start() call from mac80211. If restart isn't called 903 * (no fw restart) scan status will stay busy. 904 */ 905 iwl_mvm_report_scan_aborted(mvm); 906 907 /* 908 * If we're restarting already, don't cycle restarts. 909 * If INIT fw asserted, it will likely fail again. 910 * If WoWLAN fw asserted, don't restart either, mac80211 911 * can't recover this since we're already half suspended. 912 */ 913 if (!mvm->restart_fw && fw_error) { 914 iwl_mvm_fw_dbg_collect_desc(mvm, &iwl_mvm_dump_desc_assert, 0); 915 } else if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART, 916 &mvm->status)) { 917 struct iwl_mvm_reprobe *reprobe; 918 919 IWL_ERR(mvm, 920 "Firmware error during reconfiguration - reprobe!\n"); 921 922 /* 923 * get a module reference to avoid doing this while unloading 924 * anyway and to avoid scheduling a work with code that's 925 * being removed. 926 */ 927 if (!try_module_get(THIS_MODULE)) { 928 IWL_ERR(mvm, "Module is being unloaded - abort\n"); 929 return; 930 } 931 932 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC); 933 if (!reprobe) { 934 module_put(THIS_MODULE); 935 return; 936 } 937 reprobe->dev = mvm->trans->dev; 938 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk); 939 schedule_work(&reprobe->work); 940 } else if (mvm->cur_ucode == IWL_UCODE_REGULAR) { 941 /* don't let the transport/FW power down */ 942 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); 943 944 if (fw_error && mvm->restart_fw > 0) 945 mvm->restart_fw--; 946 ieee80211_restart_hw(mvm->hw); 947 } 948} 949 950static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode) 951{ 952 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 953 954 iwl_mvm_dump_nic_error_log(mvm); 955 956 iwl_mvm_nic_restart(mvm, true); 957} 958 959static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode) 960{ 961 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 962 963 WARN_ON(1); 964 iwl_mvm_nic_restart(mvm, true); 965} 966 967struct iwl_d0i3_iter_data { 968 struct iwl_mvm *mvm; 969 u8 ap_sta_id; 970 u8 vif_count; 971 u8 offloading_tid; 972 bool disable_offloading; 973}; 974 975static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm, 976 struct ieee80211_vif *vif, 977 struct iwl_d0i3_iter_data *iter_data) 978{ 979 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 980 struct ieee80211_sta *ap_sta; 981 struct iwl_mvm_sta *mvmsta; 982 u32 available_tids = 0; 983 u8 tid; 984 985 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION || 986 mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT)) 987 return false; 988 989 ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id]); 990 if (IS_ERR_OR_NULL(ap_sta)) 991 return false; 992 993 mvmsta = iwl_mvm_sta_from_mac80211(ap_sta); 994 spin_lock_bh(&mvmsta->lock); 995 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 996 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 997 998 /* 999 * in case of pending tx packets, don't use this tid 1000 * for offloading in order to prevent reuse of the same 1001 * qos seq counters. 1002 */ 1003 if (iwl_mvm_tid_queued(tid_data)) 1004 continue; 1005 1006 if (tid_data->state != IWL_AGG_OFF) 1007 continue; 1008 1009 available_tids |= BIT(tid); 1010 } 1011 spin_unlock_bh(&mvmsta->lock); 1012 1013 /* 1014 * disallow protocol offloading if we have no available tid 1015 * (with no pending frames and no active aggregation, 1016 * as we don't handle "holes" properly - the scheduler needs the 1017 * frame's seq number and TFD index to match) 1018 */ 1019 if (!available_tids) 1020 return true; 1021 1022 /* for simplicity, just use the first available tid */ 1023 iter_data->offloading_tid = ffs(available_tids) - 1; 1024 return false; 1025} 1026 1027static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac, 1028 struct ieee80211_vif *vif) 1029{ 1030 struct iwl_d0i3_iter_data *data = _data; 1031 struct iwl_mvm *mvm = data->mvm; 1032 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1033 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; 1034 1035 IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr); 1036 if (vif->type != NL80211_IFTYPE_STATION || 1037 !vif->bss_conf.assoc) 1038 return; 1039 1040 /* 1041 * in case of pending tx packets or active aggregations, 1042 * avoid offloading features in order to prevent reuse of 1043 * the same qos seq counters. 1044 */ 1045 if (iwl_mvm_disallow_offloading(mvm, vif, data)) 1046 data->disable_offloading = true; 1047 1048 iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags); 1049 iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading, flags); 1050 1051 /* 1052 * on init/association, mvm already configures POWER_TABLE_CMD 1053 * and REPLY_MCAST_FILTER_CMD, so currently don't 1054 * reconfigure them (we might want to use different 1055 * params later on, though). 1056 */ 1057 data->ap_sta_id = mvmvif->ap_sta_id; 1058 data->vif_count++; 1059} 1060 1061static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm, 1062 struct iwl_wowlan_config_cmd *cmd, 1063 struct iwl_d0i3_iter_data *iter_data) 1064{ 1065 struct ieee80211_sta *ap_sta; 1066 struct iwl_mvm_sta *mvm_ap_sta; 1067 1068 if (iter_data->ap_sta_id == IWL_MVM_STATION_COUNT) 1069 return; 1070 1071 rcu_read_lock(); 1072 1073 ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]); 1074 if (IS_ERR_OR_NULL(ap_sta)) 1075 goto out; 1076 1077 mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta); 1078 cmd->is_11n_connection = ap_sta->ht_cap.ht_supported; 1079 cmd->offloading_tid = iter_data->offloading_tid; 1080 1081 /* 1082 * The d0i3 uCode takes care of the nonqos counters, 1083 * so configure only the qos seq ones. 1084 */ 1085 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd); 1086out: 1087 rcu_read_unlock(); 1088} 1089 1090int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode) 1091{ 1092 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1093 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; 1094 int ret; 1095 struct iwl_d0i3_iter_data d0i3_iter_data = { 1096 .mvm = mvm, 1097 }; 1098 struct iwl_wowlan_config_cmd wowlan_config_cmd = { 1099 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME | 1100 IWL_WOWLAN_WAKEUP_BEACON_MISS | 1101 IWL_WOWLAN_WAKEUP_LINK_CHANGE | 1102 IWL_WOWLAN_WAKEUP_BCN_FILTERING), 1103 }; 1104 struct iwl_d3_manager_config d3_cfg_cmd = { 1105 .min_sleep_time = cpu_to_le32(1000), 1106 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR), 1107 }; 1108 1109 IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n"); 1110 1111 /* make sure we have no running tx while configuring the qos */ 1112 set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1113 synchronize_net(); 1114 1115 /* 1116 * iwl_mvm_ref_sync takes a reference before checking the flag. 1117 * so by checking there is no held reference we prevent a state 1118 * in which iwl_mvm_ref_sync continues successfully while we 1119 * configure the firmware to enter d0i3 1120 */ 1121 if (iwl_mvm_ref_taken(mvm)) { 1122 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n"); 1123 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1124 wake_up(&mvm->d0i3_exit_waitq); 1125 return 1; 1126 } 1127 1128 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1129 IEEE80211_IFACE_ITER_NORMAL, 1130 iwl_mvm_enter_d0i3_iterator, 1131 &d0i3_iter_data); 1132 if (d0i3_iter_data.vif_count == 1) { 1133 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id; 1134 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading; 1135 } else { 1136 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1); 1137 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; 1138 mvm->d0i3_offloading = false; 1139 } 1140 1141 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd, &d0i3_iter_data); 1142 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags, 1143 sizeof(wowlan_config_cmd), 1144 &wowlan_config_cmd); 1145 if (ret) 1146 return ret; 1147 1148 return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD, 1149 flags | CMD_MAKE_TRANS_IDLE, 1150 sizeof(d3_cfg_cmd), &d3_cfg_cmd); 1151} 1152 1153static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac, 1154 struct ieee80211_vif *vif) 1155{ 1156 struct iwl_mvm *mvm = _data; 1157 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO; 1158 1159 IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr); 1160 if (vif->type != NL80211_IFTYPE_STATION || 1161 !vif->bss_conf.assoc) 1162 return; 1163 1164 iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags); 1165} 1166 1167static void iwl_mvm_d0i3_disconnect_iter(void *data, u8 *mac, 1168 struct ieee80211_vif *vif) 1169{ 1170 struct iwl_mvm *mvm = data; 1171 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1172 1173 if (vif->type == NL80211_IFTYPE_STATION && vif->bss_conf.assoc && 1174 mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id) 1175 iwl_mvm_connection_loss(mvm, vif, "D0i3"); 1176} 1177 1178void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq) 1179{ 1180 struct ieee80211_sta *sta = NULL; 1181 struct iwl_mvm_sta *mvm_ap_sta; 1182 int i; 1183 bool wake_queues = false; 1184 1185 lockdep_assert_held(&mvm->mutex); 1186 1187 spin_lock_bh(&mvm->d0i3_tx_lock); 1188 1189 if (mvm->d0i3_ap_sta_id == IWL_MVM_STATION_COUNT) 1190 goto out; 1191 1192 IWL_DEBUG_RPM(mvm, "re-enqueue packets\n"); 1193 1194 /* get the sta in order to update seq numbers and re-enqueue skbs */ 1195 sta = rcu_dereference_protected( 1196 mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id], 1197 lockdep_is_held(&mvm->mutex)); 1198 1199 if (IS_ERR_OR_NULL(sta)) { 1200 sta = NULL; 1201 goto out; 1202 } 1203 1204 if (mvm->d0i3_offloading && qos_seq) { 1205 /* update qos seq numbers if offloading was enabled */ 1206 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta); 1207 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1208 u16 seq = le16_to_cpu(qos_seq[i]); 1209 /* firmware stores last-used one, we store next one */ 1210 seq += 0x10; 1211 mvm_ap_sta->tid_data[i].seq_number = seq; 1212 } 1213 } 1214out: 1215 /* re-enqueue (or drop) all packets */ 1216 while (!skb_queue_empty(&mvm->d0i3_tx)) { 1217 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx); 1218 1219 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta)) 1220 ieee80211_free_txskb(mvm->hw, skb); 1221 1222 /* if the skb_queue is not empty, we need to wake queues */ 1223 wake_queues = true; 1224 } 1225 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1226 wake_up(&mvm->d0i3_exit_waitq); 1227 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; 1228 if (wake_queues) 1229 ieee80211_wake_queues(mvm->hw); 1230 1231 spin_unlock_bh(&mvm->d0i3_tx_lock); 1232} 1233 1234static void iwl_mvm_d0i3_exit_work(struct work_struct *wk) 1235{ 1236 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work); 1237 struct iwl_host_cmd get_status_cmd = { 1238 .id = WOWLAN_GET_STATUSES, 1239 .flags = CMD_HIGH_PRIO | CMD_WANT_SKB, 1240 }; 1241 struct iwl_wowlan_status *status; 1242 int ret; 1243 u32 disconnection_reasons, wakeup_reasons; 1244 __le16 *qos_seq = NULL; 1245 1246 mutex_lock(&mvm->mutex); 1247 ret = iwl_mvm_send_cmd(mvm, &get_status_cmd); 1248 if (ret) 1249 goto out; 1250 1251 if (!get_status_cmd.resp_pkt) 1252 goto out; 1253 1254 status = (void *)get_status_cmd.resp_pkt->data; 1255 wakeup_reasons = le32_to_cpu(status->wakeup_reasons); 1256 qos_seq = status->qos_seq_ctr; 1257 1258 IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons); 1259 1260 disconnection_reasons = 1261 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 1262 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH; 1263 if (wakeup_reasons & disconnection_reasons) 1264 ieee80211_iterate_active_interfaces( 1265 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1266 iwl_mvm_d0i3_disconnect_iter, mvm); 1267out: 1268 iwl_mvm_d0i3_enable_tx(mvm, qos_seq); 1269 1270 /* qos_seq might point inside resp_pkt, so free it only now */ 1271 if (get_status_cmd.resp_pkt) 1272 iwl_free_resp(&get_status_cmd); 1273 1274 /* the FW might have updated the regdomain */ 1275 iwl_mvm_update_changed_regdom(mvm); 1276 1277 iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK); 1278 mutex_unlock(&mvm->mutex); 1279} 1280 1281int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm) 1282{ 1283 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE | 1284 CMD_WAKE_UP_TRANS; 1285 int ret; 1286 1287 IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n"); 1288 1289 mutex_lock(&mvm->d0i3_suspend_mutex); 1290 if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) { 1291 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n"); 1292 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags); 1293 mutex_unlock(&mvm->d0i3_suspend_mutex); 1294 return 0; 1295 } 1296 mutex_unlock(&mvm->d0i3_suspend_mutex); 1297 1298 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL); 1299 if (ret) 1300 goto out; 1301 1302 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1303 IEEE80211_IFACE_ITER_NORMAL, 1304 iwl_mvm_exit_d0i3_iterator, 1305 mvm); 1306out: 1307 schedule_work(&mvm->d0i3_exit_work); 1308 return ret; 1309} 1310 1311int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode) 1312{ 1313 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1314 1315 iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK); 1316 return _iwl_mvm_exit_d0i3(mvm); 1317} 1318 1319static void iwl_mvm_napi_add(struct iwl_op_mode *op_mode, 1320 struct napi_struct *napi, 1321 struct net_device *napi_dev, 1322 int (*poll)(struct napi_struct *, int), 1323 int weight) 1324{ 1325 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1326 1327 ieee80211_napi_add(mvm->hw, napi, napi_dev, poll, weight); 1328} 1329 1330static const struct iwl_op_mode_ops iwl_mvm_ops = { 1331 .start = iwl_op_mode_mvm_start, 1332 .stop = iwl_op_mode_mvm_stop, 1333 .rx = iwl_mvm_rx_dispatch, 1334 .queue_full = iwl_mvm_stop_sw_queue, 1335 .queue_not_full = iwl_mvm_wake_sw_queue, 1336 .hw_rf_kill = iwl_mvm_set_hw_rfkill_state, 1337 .free_skb = iwl_mvm_free_skb, 1338 .nic_error = iwl_mvm_nic_error, 1339 .cmd_queue_full = iwl_mvm_cmd_queue_full, 1340 .nic_config = iwl_mvm_nic_config, 1341 .enter_d0i3 = iwl_mvm_enter_d0i3, 1342 .exit_d0i3 = iwl_mvm_exit_d0i3, 1343 .napi_add = iwl_mvm_napi_add, 1344}; 1345