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 - 2015 Intel Mobile Communications GmbH 10 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH 11 * Copyright(c) 2018 - 2019 Intel Corporation 12 * 13 * This program is free software; you can redistribute it and/or modify 14 * it under the terms of version 2 of the GNU General Public License as 15 * published by the Free Software Foundation. 16 * 17 * This program is distributed in the hope that it will be useful, but 18 * WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 20 * General Public License for more details. 21 * 22 * The full GNU General Public License is included in this distribution 23 * in the file called COPYING. 24 * 25 * Contact Information: 26 * Intel Linux Wireless <linuxwifi@intel.com> 27 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 28 * 29 * BSD LICENSE 30 * 31 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 32 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 33 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH 34 * Copyright(c) 2018 - 2019 Intel Corporation 35 * All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 41 * * Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * * Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in 45 * the documentation and/or other materials provided with the 46 * distribution. 47 * * Neither the name Intel Corporation nor the names of its 48 * contributors may be used to endorse or promote products derived 49 * from this software without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 52 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 53 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 54 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 55 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 56 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 57 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 58 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 59 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 60 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 61 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 62 * 63 *****************************************************************************/ 64 #include <linux/module.h> 65 #include <linux/vmalloc.h> 66 #include <net/mac80211.h> 67 68 #include "fw/notif-wait.h" 69 #include "iwl-trans.h" 70 #include "iwl-op-mode.h" 71 #include "fw/img.h" 72 #include "iwl-debug.h" 73 #include "iwl-drv.h" 74 #include "iwl-modparams.h" 75 #include "mvm.h" 76 #include "iwl-phy-db.h" 77 #include "iwl-eeprom-parse.h" 78 #include "iwl-csr.h" 79 #include "iwl-io.h" 80 #include "iwl-prph.h" 81 #include "rs.h" 82 #include "fw/api/scan.h" 83 #include "time-event.h" 84 #include "fw-api.h" 85 #include "fw/acpi.h" 86 87 #define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux" 88 MODULE_DESCRIPTION(DRV_DESCRIPTION); 89 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR); 90 MODULE_LICENSE("GPL"); 91 92 static const struct iwl_op_mode_ops iwl_mvm_ops; 93 static const struct iwl_op_mode_ops iwl_mvm_ops_mq; 94 95 struct iwl_mvm_mod_params iwlmvm_mod_params = { 96 .power_scheme = IWL_POWER_SCHEME_BPS, 97 .tfd_q_hang_detect = true 98 /* rest of fields are 0 by default */ 99 }; 100 101 module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, 0444); 102 MODULE_PARM_DESC(init_dbg, 103 "set to true to debug an ASSERT in INIT fw (default: false"); 104 module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, 0444); 105 MODULE_PARM_DESC(power_scheme, 106 "power management scheme: 1-active, 2-balanced, 3-low power, default: 2"); 107 module_param_named(tfd_q_hang_detect, iwlmvm_mod_params.tfd_q_hang_detect, 108 bool, 0444); 109 MODULE_PARM_DESC(tfd_q_hang_detect, 110 "TFD queues hang detection (default: true"); 111 112 /* 113 * module init and exit functions 114 */ 115 static int __init iwl_mvm_init(void) 116 { 117 int ret; 118 119 ret = iwl_mvm_rate_control_register(); 120 if (ret) { 121 pr_err("Unable to register rate control algorithm: %d\n", ret); 122 return ret; 123 } 124 125 ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops); 126 if (ret) 127 pr_err("Unable to register MVM op_mode: %d\n", ret); 128 129 return ret; 130 } 131 module_init(iwl_mvm_init); 132 133 static void __exit iwl_mvm_exit(void) 134 { 135 iwl_opmode_deregister("iwlmvm"); 136 iwl_mvm_rate_control_unregister(); 137 } 138 module_exit(iwl_mvm_exit); 139 140 static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode) 141 { 142 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 143 u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash; 144 u32 reg_val = 0; 145 u32 phy_config = iwl_mvm_get_phy_config(mvm); 146 147 radio_cfg_type = (phy_config & FW_PHY_CFG_RADIO_TYPE) >> 148 FW_PHY_CFG_RADIO_TYPE_POS; 149 radio_cfg_step = (phy_config & FW_PHY_CFG_RADIO_STEP) >> 150 FW_PHY_CFG_RADIO_STEP_POS; 151 radio_cfg_dash = (phy_config & FW_PHY_CFG_RADIO_DASH) >> 152 FW_PHY_CFG_RADIO_DASH_POS; 153 154 /* SKU control */ 155 reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) << 156 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP; 157 reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) << 158 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH; 159 160 /* radio configuration */ 161 reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE; 162 reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP; 163 reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH; 164 165 WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) & 166 ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE); 167 168 /* 169 * TODO: Bits 7-8 of CSR in 8000 HW family and higher set the ADC 170 * sampling, and shouldn't be set to any non-zero value. 171 * The same is supposed to be true of the other HW, but unsetting 172 * them (such as the 7260) causes automatic tests to fail on seemingly 173 * unrelated errors. Need to further investigate this, but for now 174 * 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 if (iwl_fw_dbg_is_d3_debug_enabled(&mvm->fwrt)) 180 reg_val |= CSR_HW_IF_CONFIG_REG_D3_DEBUG; 181 182 iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG, 183 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH | 184 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP | 185 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE | 186 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP | 187 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH | 188 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI | 189 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI | 190 CSR_HW_IF_CONFIG_REG_D3_DEBUG, 191 reg_val); 192 193 IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type, 194 radio_cfg_step, radio_cfg_dash); 195 196 /* 197 * W/A : NIC is stuck in a reset state after Early PCIe power off 198 * (PCIe power is lost before PERST# is asserted), causing ME FW 199 * to lose ownership and not being able to obtain it back. 200 */ 201 if (!mvm->trans->cfg->apmg_not_supported) 202 iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG, 203 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS, 204 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS); 205 } 206 207 /** 208 * enum iwl_rx_handler_context context for Rx handler 209 * @RX_HANDLER_SYNC : this means that it will be called in the Rx path 210 * which can't acquire mvm->mutex. 211 * @RX_HANDLER_ASYNC_LOCKED : If the handler needs to hold mvm->mutex 212 * (and only in this case!), it should be set as ASYNC. In that case, 213 * it will be called from a worker with mvm->mutex held. 214 * @RX_HANDLER_ASYNC_UNLOCKED : in case the handler needs to lock the 215 * mutex itself, it will be called from a worker without mvm->mutex held. 216 */ 217 enum iwl_rx_handler_context { 218 RX_HANDLER_SYNC, 219 RX_HANDLER_ASYNC_LOCKED, 220 RX_HANDLER_ASYNC_UNLOCKED, 221 }; 222 223 /** 224 * struct iwl_rx_handlers handler for FW notification 225 * @cmd_id: command id 226 * @context: see &iwl_rx_handler_context 227 * @fn: the function is called when notification is received 228 */ 229 struct iwl_rx_handlers { 230 u16 cmd_id; 231 enum iwl_rx_handler_context context; 232 void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb); 233 }; 234 235 #define RX_HANDLER(_cmd_id, _fn, _context) \ 236 { .cmd_id = _cmd_id, .fn = _fn, .context = _context } 237 #define RX_HANDLER_GRP(_grp, _cmd, _fn, _context) \ 238 { .cmd_id = WIDE_ID(_grp, _cmd), .fn = _fn, .context = _context } 239 240 /* 241 * Handlers for fw notifications 242 * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME 243 * This list should be in order of frequency for performance purposes. 244 * 245 * The handler can be one from three contexts, see &iwl_rx_handler_context 246 */ 247 static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = { 248 RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, RX_HANDLER_SYNC), 249 RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, RX_HANDLER_SYNC), 250 251 RX_HANDLER_GRP(DATA_PATH_GROUP, TLC_MNG_UPDATE_NOTIF, 252 iwl_mvm_tlc_update_notif, RX_HANDLER_SYNC), 253 254 RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif, 255 RX_HANDLER_ASYNC_LOCKED), 256 RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif, 257 RX_HANDLER_ASYNC_LOCKED), 258 RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics, 259 RX_HANDLER_ASYNC_LOCKED), 260 261 RX_HANDLER(BA_WINDOW_STATUS_NOTIFICATION_ID, 262 iwl_mvm_window_status_notif, RX_HANDLER_SYNC), 263 264 RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif, 265 RX_HANDLER_SYNC), 266 RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc, 267 RX_HANDLER_ASYNC_LOCKED), 268 269 RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, RX_HANDLER_SYNC), 270 271 RX_HANDLER(SCAN_ITERATION_COMPLETE, 272 iwl_mvm_rx_lmac_scan_iter_complete_notif, RX_HANDLER_SYNC), 273 RX_HANDLER(SCAN_OFFLOAD_COMPLETE, 274 iwl_mvm_rx_lmac_scan_complete_notif, 275 RX_HANDLER_ASYNC_LOCKED), 276 RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_match_found, 277 RX_HANDLER_SYNC), 278 RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif, 279 RX_HANDLER_ASYNC_LOCKED), 280 RX_HANDLER(SCAN_ITERATION_COMPLETE_UMAC, 281 iwl_mvm_rx_umac_scan_iter_complete_notif, RX_HANDLER_SYNC), 282 283 RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif, 284 RX_HANDLER_SYNC), 285 286 RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif, 287 RX_HANDLER_SYNC), 288 289 RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, RX_HANDLER_SYNC), 290 RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION, 291 iwl_mvm_power_uapsd_misbehaving_ap_notif, RX_HANDLER_SYNC), 292 RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif, 293 RX_HANDLER_ASYNC_LOCKED), 294 RX_HANDLER_GRP(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE, 295 iwl_mvm_temp_notif, RX_HANDLER_ASYNC_UNLOCKED), 296 RX_HANDLER_GRP(PHY_OPS_GROUP, CT_KILL_NOTIFICATION, 297 iwl_mvm_ct_kill_notif, RX_HANDLER_SYNC), 298 299 RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif, 300 RX_HANDLER_ASYNC_LOCKED), 301 RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif, 302 RX_HANDLER_SYNC), 303 RX_HANDLER_GRP(LOCATION_GROUP, TOF_RESPONDER_STATS, 304 iwl_mvm_ftm_responder_stats, RX_HANDLER_ASYNC_LOCKED), 305 306 RX_HANDLER_GRP(LOCATION_GROUP, TOF_RANGE_RESPONSE_NOTIF, 307 iwl_mvm_ftm_range_resp, RX_HANDLER_ASYNC_LOCKED), 308 RX_HANDLER_GRP(LOCATION_GROUP, TOF_LC_NOTIF, 309 iwl_mvm_ftm_lc_notif, RX_HANDLER_ASYNC_LOCKED), 310 311 RX_HANDLER_GRP(DEBUG_GROUP, MFU_ASSERT_DUMP_NTF, 312 iwl_mvm_mfu_assert_dump_notif, RX_HANDLER_SYNC), 313 RX_HANDLER_GRP(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF, 314 iwl_mvm_rx_stored_beacon_notif, RX_HANDLER_SYNC), 315 RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF, 316 iwl_mvm_mu_mimo_grp_notif, RX_HANDLER_SYNC), 317 RX_HANDLER_GRP(DATA_PATH_GROUP, STA_PM_NOTIF, 318 iwl_mvm_sta_pm_notif, RX_HANDLER_SYNC), 319 }; 320 #undef RX_HANDLER 321 #undef RX_HANDLER_GRP 322 323 /* Please keep this array *SORTED* by hex value. 324 * Access is done through binary search 325 */ 326 static const struct iwl_hcmd_names iwl_mvm_legacy_names[] = { 327 HCMD_NAME(MVM_ALIVE), 328 HCMD_NAME(REPLY_ERROR), 329 HCMD_NAME(ECHO_CMD), 330 HCMD_NAME(INIT_COMPLETE_NOTIF), 331 HCMD_NAME(PHY_CONTEXT_CMD), 332 HCMD_NAME(DBG_CFG), 333 HCMD_NAME(SCAN_CFG_CMD), 334 HCMD_NAME(SCAN_REQ_UMAC), 335 HCMD_NAME(SCAN_ABORT_UMAC), 336 HCMD_NAME(SCAN_COMPLETE_UMAC), 337 HCMD_NAME(BA_WINDOW_STATUS_NOTIFICATION_ID), 338 HCMD_NAME(ADD_STA_KEY), 339 HCMD_NAME(ADD_STA), 340 HCMD_NAME(REMOVE_STA), 341 HCMD_NAME(FW_GET_ITEM_CMD), 342 HCMD_NAME(TX_CMD), 343 HCMD_NAME(SCD_QUEUE_CFG), 344 HCMD_NAME(TXPATH_FLUSH), 345 HCMD_NAME(MGMT_MCAST_KEY), 346 HCMD_NAME(WEP_KEY), 347 HCMD_NAME(SHARED_MEM_CFG), 348 HCMD_NAME(TDLS_CHANNEL_SWITCH_CMD), 349 HCMD_NAME(MAC_CONTEXT_CMD), 350 HCMD_NAME(TIME_EVENT_CMD), 351 HCMD_NAME(TIME_EVENT_NOTIFICATION), 352 HCMD_NAME(BINDING_CONTEXT_CMD), 353 HCMD_NAME(TIME_QUOTA_CMD), 354 HCMD_NAME(NON_QOS_TX_COUNTER_CMD), 355 HCMD_NAME(LEDS_CMD), 356 HCMD_NAME(LQ_CMD), 357 HCMD_NAME(FW_PAGING_BLOCK_CMD), 358 HCMD_NAME(SCAN_OFFLOAD_REQUEST_CMD), 359 HCMD_NAME(SCAN_OFFLOAD_ABORT_CMD), 360 HCMD_NAME(HOT_SPOT_CMD), 361 HCMD_NAME(SCAN_OFFLOAD_PROFILES_QUERY_CMD), 362 HCMD_NAME(BT_COEX_UPDATE_REDUCED_TXP), 363 HCMD_NAME(BT_COEX_CI), 364 HCMD_NAME(PHY_CONFIGURATION_CMD), 365 HCMD_NAME(CALIB_RES_NOTIF_PHY_DB), 366 HCMD_NAME(PHY_DB_CMD), 367 HCMD_NAME(SCAN_OFFLOAD_COMPLETE), 368 HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_CMD), 369 HCMD_NAME(POWER_TABLE_CMD), 370 HCMD_NAME(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION), 371 HCMD_NAME(REPLY_THERMAL_MNG_BACKOFF), 372 HCMD_NAME(DC2DC_CONFIG_CMD), 373 HCMD_NAME(NVM_ACCESS_CMD), 374 HCMD_NAME(BEACON_NOTIFICATION), 375 HCMD_NAME(BEACON_TEMPLATE_CMD), 376 HCMD_NAME(TX_ANT_CONFIGURATION_CMD), 377 HCMD_NAME(BT_CONFIG), 378 HCMD_NAME(STATISTICS_CMD), 379 HCMD_NAME(STATISTICS_NOTIFICATION), 380 HCMD_NAME(EOSP_NOTIFICATION), 381 HCMD_NAME(REDUCE_TX_POWER_CMD), 382 HCMD_NAME(CARD_STATE_NOTIFICATION), 383 HCMD_NAME(MISSED_BEACONS_NOTIFICATION), 384 HCMD_NAME(TDLS_CONFIG_CMD), 385 HCMD_NAME(MAC_PM_POWER_TABLE), 386 HCMD_NAME(TDLS_CHANNEL_SWITCH_NOTIFICATION), 387 HCMD_NAME(MFUART_LOAD_NOTIFICATION), 388 HCMD_NAME(RSS_CONFIG_CMD), 389 HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC), 390 HCMD_NAME(REPLY_RX_PHY_CMD), 391 HCMD_NAME(REPLY_RX_MPDU_CMD), 392 HCMD_NAME(FRAME_RELEASE), 393 HCMD_NAME(BA_NOTIF), 394 HCMD_NAME(MCC_UPDATE_CMD), 395 HCMD_NAME(MCC_CHUB_UPDATE_CMD), 396 HCMD_NAME(MARKER_CMD), 397 HCMD_NAME(BT_PROFILE_NOTIFICATION), 398 HCMD_NAME(BCAST_FILTER_CMD), 399 HCMD_NAME(MCAST_FILTER_CMD), 400 HCMD_NAME(REPLY_SF_CFG_CMD), 401 HCMD_NAME(REPLY_BEACON_FILTERING_CMD), 402 HCMD_NAME(D3_CONFIG_CMD), 403 HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD), 404 HCMD_NAME(OFFLOADS_QUERY_CMD), 405 HCMD_NAME(REMOTE_WAKE_CONFIG_CMD), 406 HCMD_NAME(MATCH_FOUND_NOTIFICATION), 407 HCMD_NAME(DTS_MEASUREMENT_NOTIFICATION), 408 HCMD_NAME(WOWLAN_PATTERNS), 409 HCMD_NAME(WOWLAN_CONFIGURATION), 410 HCMD_NAME(WOWLAN_TSC_RSC_PARAM), 411 HCMD_NAME(WOWLAN_TKIP_PARAM), 412 HCMD_NAME(WOWLAN_KEK_KCK_MATERIAL), 413 HCMD_NAME(WOWLAN_GET_STATUSES), 414 HCMD_NAME(SCAN_ITERATION_COMPLETE), 415 HCMD_NAME(D0I3_END_CMD), 416 HCMD_NAME(LTR_CONFIG), 417 }; 418 419 /* Please keep this array *SORTED* by hex value. 420 * Access is done through binary search 421 */ 422 static const struct iwl_hcmd_names iwl_mvm_system_names[] = { 423 HCMD_NAME(SHARED_MEM_CFG_CMD), 424 HCMD_NAME(INIT_EXTENDED_CFG_CMD), 425 HCMD_NAME(FW_ERROR_RECOVERY_CMD), 426 }; 427 428 /* Please keep this array *SORTED* by hex value. 429 * Access is done through binary search 430 */ 431 static const struct iwl_hcmd_names iwl_mvm_mac_conf_names[] = { 432 HCMD_NAME(CHANNEL_SWITCH_TIME_EVENT_CMD), 433 HCMD_NAME(CHANNEL_SWITCH_NOA_NOTIF), 434 }; 435 436 /* Please keep this array *SORTED* by hex value. 437 * Access is done through binary search 438 */ 439 static const struct iwl_hcmd_names iwl_mvm_phy_names[] = { 440 HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE), 441 HCMD_NAME(CTDP_CONFIG_CMD), 442 HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD), 443 HCMD_NAME(GEO_TX_POWER_LIMIT), 444 HCMD_NAME(CT_KILL_NOTIFICATION), 445 HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE), 446 }; 447 448 /* Please keep this array *SORTED* by hex value. 449 * Access is done through binary search 450 */ 451 static const struct iwl_hcmd_names iwl_mvm_data_path_names[] = { 452 HCMD_NAME(DQA_ENABLE_CMD), 453 HCMD_NAME(UPDATE_MU_GROUPS_CMD), 454 HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD), 455 HCMD_NAME(STA_HE_CTXT_CMD), 456 HCMD_NAME(RFH_QUEUE_CONFIG_CMD), 457 HCMD_NAME(TLC_MNG_CONFIG_CMD), 458 HCMD_NAME(CHEST_COLLECTOR_FILTER_CONFIG_CMD), 459 HCMD_NAME(STA_PM_NOTIF), 460 HCMD_NAME(MU_GROUP_MGMT_NOTIF), 461 HCMD_NAME(RX_QUEUES_NOTIFICATION), 462 }; 463 464 /* Please keep this array *SORTED* by hex value. 465 * Access is done through binary search 466 */ 467 static const struct iwl_hcmd_names iwl_mvm_debug_names[] = { 468 HCMD_NAME(MFU_ASSERT_DUMP_NTF), 469 }; 470 471 /* Please keep this array *SORTED* by hex value. 472 * Access is done through binary search 473 */ 474 static const struct iwl_hcmd_names iwl_mvm_location_names[] = { 475 HCMD_NAME(TOF_RANGE_REQ_CMD), 476 HCMD_NAME(TOF_CONFIG_CMD), 477 HCMD_NAME(TOF_RANGE_ABORT_CMD), 478 HCMD_NAME(TOF_RANGE_REQ_EXT_CMD), 479 HCMD_NAME(TOF_RESPONDER_CONFIG_CMD), 480 HCMD_NAME(TOF_RESPONDER_DYN_CONFIG_CMD), 481 HCMD_NAME(TOF_LC_NOTIF), 482 HCMD_NAME(TOF_RESPONDER_STATS), 483 HCMD_NAME(TOF_MCSI_DEBUG_NOTIF), 484 HCMD_NAME(TOF_RANGE_RESPONSE_NOTIF), 485 }; 486 487 /* Please keep this array *SORTED* by hex value. 488 * Access is done through binary search 489 */ 490 static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = { 491 HCMD_NAME(STORED_BEACON_NTF), 492 }; 493 494 /* Please keep this array *SORTED* by hex value. 495 * Access is done through binary search 496 */ 497 static const struct iwl_hcmd_names iwl_mvm_regulatory_and_nvm_names[] = { 498 HCMD_NAME(NVM_ACCESS_COMPLETE), 499 HCMD_NAME(NVM_GET_INFO), 500 }; 501 502 static const struct iwl_hcmd_arr iwl_mvm_groups[] = { 503 [LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names), 504 [LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names), 505 [SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names), 506 [MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names), 507 [PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names), 508 [DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names), 509 [LOCATION_GROUP] = HCMD_ARR(iwl_mvm_location_names), 510 [PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names), 511 [REGULATORY_AND_NVM_GROUP] = 512 HCMD_ARR(iwl_mvm_regulatory_and_nvm_names), 513 }; 514 515 /* this forward declaration can avoid to export the function */ 516 static void iwl_mvm_async_handlers_wk(struct work_struct *wk); 517 #ifdef CONFIG_PM 518 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk); 519 #endif 520 521 static u32 iwl_mvm_min_backoff(struct iwl_mvm *mvm) 522 { 523 const struct iwl_pwr_tx_backoff *backoff = mvm->cfg->pwr_tx_backoffs; 524 u64 dflt_pwr_limit; 525 526 if (!backoff) 527 return 0; 528 529 dflt_pwr_limit = iwl_acpi_get_pwr_limit(mvm->dev); 530 531 while (backoff->pwr) { 532 if (dflt_pwr_limit >= backoff->pwr) 533 return backoff->backoff; 534 535 backoff++; 536 } 537 538 return 0; 539 } 540 541 static void iwl_mvm_tx_unblock_dwork(struct work_struct *work) 542 { 543 struct iwl_mvm *mvm = 544 container_of(work, struct iwl_mvm, cs_tx_unblock_dwork.work); 545 struct ieee80211_vif *tx_blocked_vif; 546 struct iwl_mvm_vif *mvmvif; 547 548 mutex_lock(&mvm->mutex); 549 550 tx_blocked_vif = 551 rcu_dereference_protected(mvm->csa_tx_blocked_vif, 552 lockdep_is_held(&mvm->mutex)); 553 554 if (!tx_blocked_vif) 555 goto unlock; 556 557 mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif); 558 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false); 559 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); 560 unlock: 561 mutex_unlock(&mvm->mutex); 562 } 563 564 static int iwl_mvm_fwrt_dump_start(void *ctx) 565 { 566 struct iwl_mvm *mvm = ctx; 567 int ret = 0; 568 569 mutex_lock(&mvm->mutex); 570 571 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT); 572 if (ret) 573 mutex_unlock(&mvm->mutex); 574 575 return ret; 576 } 577 578 static void iwl_mvm_fwrt_dump_end(void *ctx) 579 { 580 struct iwl_mvm *mvm = ctx; 581 582 iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT); 583 584 mutex_unlock(&mvm->mutex); 585 } 586 587 static bool iwl_mvm_fwrt_fw_running(void *ctx) 588 { 589 return iwl_mvm_firmware_running(ctx); 590 } 591 592 static int iwl_mvm_fwrt_send_hcmd(void *ctx, struct iwl_host_cmd *host_cmd) 593 { 594 struct iwl_mvm *mvm = (struct iwl_mvm *)ctx; 595 int ret; 596 597 mutex_lock(&mvm->mutex); 598 ret = iwl_mvm_send_cmd(mvm, host_cmd); 599 mutex_unlock(&mvm->mutex); 600 601 return ret; 602 } 603 604 static bool iwl_mvm_d3_debug_enable(void *ctx) 605 { 606 return IWL_MVM_D3_DEBUG; 607 } 608 609 static const struct iwl_fw_runtime_ops iwl_mvm_fwrt_ops = { 610 .dump_start = iwl_mvm_fwrt_dump_start, 611 .dump_end = iwl_mvm_fwrt_dump_end, 612 .fw_running = iwl_mvm_fwrt_fw_running, 613 .send_hcmd = iwl_mvm_fwrt_send_hcmd, 614 .d3_debug_enable = iwl_mvm_d3_debug_enable, 615 }; 616 617 static struct iwl_op_mode * 618 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg, 619 const struct iwl_fw *fw, struct dentry *dbgfs_dir) 620 { 621 struct ieee80211_hw *hw; 622 struct iwl_op_mode *op_mode; 623 struct iwl_mvm *mvm; 624 struct iwl_trans_config trans_cfg = {}; 625 static const u8 no_reclaim_cmds[] = { 626 TX_CMD, 627 }; 628 int err, scan_size; 629 u32 min_backoff; 630 enum iwl_amsdu_size rb_size_default; 631 632 /* 633 * We use IWL_MVM_STATION_COUNT to check the validity of the station 634 * index all over the driver - check that its value corresponds to the 635 * array size. 636 */ 637 BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT); 638 639 /******************************** 640 * 1. Allocating and configuring HW data 641 ********************************/ 642 hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) + 643 sizeof(struct iwl_mvm), 644 &iwl_mvm_hw_ops); 645 if (!hw) 646 return NULL; 647 648 if (cfg->max_rx_agg_size) 649 hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size; 650 else 651 hw->max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF; 652 653 if (cfg->max_tx_agg_size) 654 hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size; 655 else 656 hw->max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF; 657 658 op_mode = hw->priv; 659 660 mvm = IWL_OP_MODE_GET_MVM(op_mode); 661 mvm->dev = trans->dev; 662 mvm->trans = trans; 663 mvm->cfg = cfg; 664 mvm->fw = fw; 665 mvm->hw = hw; 666 667 iwl_fw_runtime_init(&mvm->fwrt, trans, fw, &iwl_mvm_fwrt_ops, mvm, 668 dbgfs_dir); 669 670 mvm->init_status = 0; 671 672 if (iwl_mvm_has_new_rx_api(mvm)) { 673 op_mode->ops = &iwl_mvm_ops_mq; 674 trans->rx_mpdu_cmd_hdr_size = 675 (trans->cfg->device_family >= 676 IWL_DEVICE_FAMILY_22560) ? 677 sizeof(struct iwl_rx_mpdu_desc) : 678 IWL_RX_DESC_SIZE_V1; 679 } else { 680 op_mode->ops = &iwl_mvm_ops; 681 trans->rx_mpdu_cmd_hdr_size = 682 sizeof(struct iwl_rx_mpdu_res_start); 683 684 if (WARN_ON(trans->num_rx_queues > 1)) 685 goto out_free; 686 } 687 688 mvm->fw_restart = iwlwifi_mod_params.fw_restart ? -1 : 0; 689 690 mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE; 691 mvm->snif_queue = IWL_MVM_DQA_INJECT_MONITOR_QUEUE; 692 mvm->probe_queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE; 693 mvm->p2p_dev_queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE; 694 695 mvm->sf_state = SF_UNINIT; 696 if (iwl_mvm_has_unified_ucode(mvm)) 697 iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_REGULAR); 698 else 699 iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_INIT); 700 mvm->drop_bcn_ap_mode = true; 701 702 mutex_init(&mvm->mutex); 703 mutex_init(&mvm->d0i3_suspend_mutex); 704 spin_lock_init(&mvm->async_handlers_lock); 705 INIT_LIST_HEAD(&mvm->time_event_list); 706 INIT_LIST_HEAD(&mvm->aux_roc_te_list); 707 INIT_LIST_HEAD(&mvm->async_handlers_list); 708 spin_lock_init(&mvm->time_event_lock); 709 INIT_LIST_HEAD(&mvm->ftm_initiator.loc_list); 710 711 INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk); 712 INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk); 713 #ifdef CONFIG_PM 714 INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work); 715 #endif 716 INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work); 717 INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk); 718 INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk); 719 INIT_LIST_HEAD(&mvm->add_stream_txqs); 720 721 spin_lock_init(&mvm->d0i3_tx_lock); 722 spin_lock_init(&mvm->refs_lock); 723 skb_queue_head_init(&mvm->d0i3_tx); 724 init_waitqueue_head(&mvm->d0i3_exit_waitq); 725 init_waitqueue_head(&mvm->rx_sync_waitq); 726 727 atomic_set(&mvm->queue_sync_counter, 0); 728 729 SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev); 730 731 spin_lock_init(&mvm->tcm.lock); 732 INIT_DELAYED_WORK(&mvm->tcm.work, iwl_mvm_tcm_work); 733 mvm->tcm.ts = jiffies; 734 mvm->tcm.ll_ts = jiffies; 735 mvm->tcm.uapsd_nonagg_ts = jiffies; 736 737 INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork); 738 739 /* 740 * Populate the state variables that the transport layer needs 741 * to know about. 742 */ 743 trans_cfg.op_mode = op_mode; 744 trans_cfg.no_reclaim_cmds = no_reclaim_cmds; 745 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds); 746 747 if (mvm->trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560) 748 rb_size_default = IWL_AMSDU_2K; 749 else 750 rb_size_default = IWL_AMSDU_4K; 751 752 switch (iwlwifi_mod_params.amsdu_size) { 753 case IWL_AMSDU_DEF: 754 trans_cfg.rx_buf_size = rb_size_default; 755 break; 756 case IWL_AMSDU_4K: 757 trans_cfg.rx_buf_size = IWL_AMSDU_4K; 758 break; 759 case IWL_AMSDU_8K: 760 trans_cfg.rx_buf_size = IWL_AMSDU_8K; 761 break; 762 case IWL_AMSDU_12K: 763 trans_cfg.rx_buf_size = IWL_AMSDU_12K; 764 break; 765 default: 766 pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME, 767 iwlwifi_mod_params.amsdu_size); 768 trans_cfg.rx_buf_size = rb_size_default; 769 } 770 771 BUILD_BUG_ON(sizeof(struct iwl_ldbg_config_cmd) != 772 LDBG_CFG_COMMAND_SIZE); 773 774 trans->wide_cmd_header = true; 775 trans_cfg.bc_table_dword = 776 mvm->trans->cfg->device_family < IWL_DEVICE_FAMILY_22560; 777 778 trans_cfg.command_groups = iwl_mvm_groups; 779 trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups); 780 781 trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE; 782 trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD; 783 trans_cfg.scd_set_active = true; 784 785 trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info, 786 driver_data[2]); 787 788 trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD; 789 790 /* Set a short watchdog for the command queue */ 791 trans_cfg.cmd_q_wdg_timeout = 792 iwl_mvm_get_wd_timeout(mvm, NULL, false, true); 793 794 snprintf(mvm->hw->wiphy->fw_version, 795 sizeof(mvm->hw->wiphy->fw_version), 796 "%s", fw->fw_version); 797 798 /* Configure transport layer */ 799 iwl_trans_configure(mvm->trans, &trans_cfg); 800 801 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD; 802 trans->dbg.dest_tlv = mvm->fw->dbg.dest_tlv; 803 trans->dbg.n_dest_reg = mvm->fw->dbg.n_dest_reg; 804 memcpy(trans->dbg.conf_tlv, mvm->fw->dbg.conf_tlv, 805 sizeof(trans->dbg.conf_tlv)); 806 trans->dbg.trigger_tlv = mvm->fw->dbg.trigger_tlv; 807 808 trans->iml = mvm->fw->iml; 809 trans->iml_len = mvm->fw->iml_len; 810 811 /* set up notification wait support */ 812 iwl_notification_wait_init(&mvm->notif_wait); 813 814 /* Init phy db */ 815 mvm->phy_db = iwl_phy_db_init(trans); 816 if (!mvm->phy_db) { 817 IWL_ERR(mvm, "Cannot init phy_db\n"); 818 goto out_free; 819 } 820 821 IWL_INFO(mvm, "Detected %s, REV=0x%X\n", 822 mvm->cfg->name, mvm->trans->hw_rev); 823 824 if (iwlwifi_mod_params.nvm_file) 825 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file; 826 else 827 IWL_DEBUG_EEPROM(mvm->trans->dev, 828 "working without external nvm file\n"); 829 830 err = iwl_trans_start_hw(mvm->trans); 831 if (err) 832 goto out_free; 833 834 mutex_lock(&mvm->mutex); 835 iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE); 836 err = iwl_run_init_mvm_ucode(mvm, true); 837 if (err && err != -ERFKILL) 838 iwl_fw_dbg_error_collect(&mvm->fwrt, FW_DBG_TRIGGER_DRIVER); 839 if (!iwlmvm_mod_params.init_dbg || !err) 840 iwl_mvm_stop_device(mvm); 841 iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE); 842 mutex_unlock(&mvm->mutex); 843 if (err < 0) { 844 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err); 845 goto out_free; 846 } 847 848 scan_size = iwl_mvm_scan_size(mvm); 849 850 mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL); 851 if (!mvm->scan_cmd) 852 goto out_free; 853 854 /* Set EBS as successful as long as not stated otherwise by the FW. */ 855 mvm->last_ebs_successful = true; 856 857 err = iwl_mvm_mac_setup_register(mvm); 858 if (err) 859 goto out_free; 860 mvm->hw_registered = true; 861 862 min_backoff = iwl_mvm_min_backoff(mvm); 863 iwl_mvm_thermal_initialize(mvm, min_backoff); 864 865 iwl_mvm_dbgfs_register(mvm, dbgfs_dir); 866 867 if (!iwl_mvm_has_new_rx_stats_api(mvm)) 868 memset(&mvm->rx_stats_v3, 0, 869 sizeof(struct mvm_statistics_rx_v3)); 870 else 871 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx)); 872 873 /* The transport always starts with a taken reference, we can 874 * release it now if d0i3 is supported */ 875 if (iwl_mvm_is_d0i3_supported(mvm)) 876 iwl_trans_unref(mvm->trans); 877 878 iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx); 879 880 return op_mode; 881 882 out_free: 883 iwl_fw_flush_dumps(&mvm->fwrt); 884 iwl_fw_runtime_free(&mvm->fwrt); 885 886 if (iwlmvm_mod_params.init_dbg) 887 return op_mode; 888 iwl_phy_db_free(mvm->phy_db); 889 kfree(mvm->scan_cmd); 890 iwl_trans_op_mode_leave(trans); 891 892 ieee80211_free_hw(mvm->hw); 893 return NULL; 894 } 895 896 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode) 897 { 898 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 899 int i; 900 901 /* If d0i3 is supported, we have released the reference that 902 * the transport started with, so we should take it back now 903 * that we are leaving. 904 */ 905 if (iwl_mvm_is_d0i3_supported(mvm)) 906 iwl_trans_ref(mvm->trans); 907 908 iwl_mvm_leds_exit(mvm); 909 910 iwl_mvm_thermal_exit(mvm); 911 912 ieee80211_unregister_hw(mvm->hw); 913 914 kfree(mvm->scan_cmd); 915 kfree(mvm->mcast_filter_cmd); 916 mvm->mcast_filter_cmd = NULL; 917 918 kfree(mvm->error_recovery_buf); 919 mvm->error_recovery_buf = NULL; 920 921 iwl_trans_op_mode_leave(mvm->trans); 922 923 iwl_phy_db_free(mvm->phy_db); 924 mvm->phy_db = NULL; 925 926 kfree(mvm->nvm_data); 927 for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++) 928 kfree(mvm->nvm_sections[i].data); 929 930 cancel_delayed_work_sync(&mvm->tcm.work); 931 932 iwl_fw_runtime_free(&mvm->fwrt); 933 mutex_destroy(&mvm->mutex); 934 mutex_destroy(&mvm->d0i3_suspend_mutex); 935 936 ieee80211_free_hw(mvm->hw); 937 } 938 939 struct iwl_async_handler_entry { 940 struct list_head list; 941 struct iwl_rx_cmd_buffer rxb; 942 enum iwl_rx_handler_context context; 943 void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb); 944 }; 945 946 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm) 947 { 948 struct iwl_async_handler_entry *entry, *tmp; 949 950 spin_lock_bh(&mvm->async_handlers_lock); 951 list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) { 952 iwl_free_rxb(&entry->rxb); 953 list_del(&entry->list); 954 kfree(entry); 955 } 956 spin_unlock_bh(&mvm->async_handlers_lock); 957 } 958 959 static void iwl_mvm_async_handlers_wk(struct work_struct *wk) 960 { 961 struct iwl_mvm *mvm = 962 container_of(wk, struct iwl_mvm, async_handlers_wk); 963 struct iwl_async_handler_entry *entry, *tmp; 964 LIST_HEAD(local_list); 965 966 /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */ 967 968 /* 969 * Sync with Rx path with a lock. Remove all the entries from this list, 970 * add them to a local one (lock free), and then handle them. 971 */ 972 spin_lock_bh(&mvm->async_handlers_lock); 973 list_splice_init(&mvm->async_handlers_list, &local_list); 974 spin_unlock_bh(&mvm->async_handlers_lock); 975 976 list_for_each_entry_safe(entry, tmp, &local_list, list) { 977 if (entry->context == RX_HANDLER_ASYNC_LOCKED) 978 mutex_lock(&mvm->mutex); 979 entry->fn(mvm, &entry->rxb); 980 iwl_free_rxb(&entry->rxb); 981 list_del(&entry->list); 982 if (entry->context == RX_HANDLER_ASYNC_LOCKED) 983 mutex_unlock(&mvm->mutex); 984 kfree(entry); 985 } 986 } 987 988 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm, 989 struct iwl_rx_packet *pkt) 990 { 991 struct iwl_fw_dbg_trigger_tlv *trig; 992 struct iwl_fw_dbg_trigger_cmd *cmds_trig; 993 int i; 994 995 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, NULL, 996 FW_DBG_TRIGGER_FW_NOTIF); 997 if (!trig) 998 return; 999 1000 cmds_trig = (void *)trig->data; 1001 1002 for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) { 1003 /* don't collect on CMD 0 */ 1004 if (!cmds_trig->cmds[i].cmd_id) 1005 break; 1006 1007 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd || 1008 cmds_trig->cmds[i].group_id != pkt->hdr.group_id) 1009 continue; 1010 1011 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 1012 "CMD 0x%02x.%02x received", 1013 pkt->hdr.group_id, pkt->hdr.cmd); 1014 break; 1015 } 1016 } 1017 1018 static void iwl_mvm_rx_common(struct iwl_mvm *mvm, 1019 struct iwl_rx_cmd_buffer *rxb, 1020 struct iwl_rx_packet *pkt) 1021 { 1022 int i; 1023 1024 iwl_mvm_rx_check_trigger(mvm, pkt); 1025 1026 /* 1027 * Do the notification wait before RX handlers so 1028 * even if the RX handler consumes the RXB we have 1029 * access to it in the notification wait entry. 1030 */ 1031 iwl_notification_wait_notify(&mvm->notif_wait, pkt); 1032 1033 for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) { 1034 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i]; 1035 struct iwl_async_handler_entry *entry; 1036 1037 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) 1038 continue; 1039 1040 if (rx_h->context == RX_HANDLER_SYNC) { 1041 rx_h->fn(mvm, rxb); 1042 return; 1043 } 1044 1045 entry = kzalloc(sizeof(*entry), GFP_ATOMIC); 1046 /* we can't do much... */ 1047 if (!entry) 1048 return; 1049 1050 entry->rxb._page = rxb_steal_page(rxb); 1051 entry->rxb._offset = rxb->_offset; 1052 entry->rxb._rx_page_order = rxb->_rx_page_order; 1053 entry->fn = rx_h->fn; 1054 entry->context = rx_h->context; 1055 spin_lock(&mvm->async_handlers_lock); 1056 list_add_tail(&entry->list, &mvm->async_handlers_list); 1057 spin_unlock(&mvm->async_handlers_lock); 1058 schedule_work(&mvm->async_handlers_wk); 1059 break; 1060 } 1061 } 1062 1063 static void iwl_mvm_rx(struct iwl_op_mode *op_mode, 1064 struct napi_struct *napi, 1065 struct iwl_rx_cmd_buffer *rxb) 1066 { 1067 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1068 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1069 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); 1070 1071 if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))) 1072 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb); 1073 else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD)) 1074 iwl_mvm_rx_rx_phy_cmd(mvm, rxb); 1075 else 1076 iwl_mvm_rx_common(mvm, rxb, pkt); 1077 } 1078 1079 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode, 1080 struct napi_struct *napi, 1081 struct iwl_rx_cmd_buffer *rxb) 1082 { 1083 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1084 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1085 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); 1086 1087 if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))) 1088 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0); 1089 else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP, 1090 RX_QUEUES_NOTIFICATION))) 1091 iwl_mvm_rx_queue_notif(mvm, rxb, 0); 1092 else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)) 1093 iwl_mvm_rx_frame_release(mvm, napi, rxb, 0); 1094 else if (cmd == WIDE_ID(DATA_PATH_GROUP, RX_NO_DATA_NOTIF)) 1095 iwl_mvm_rx_monitor_no_data(mvm, napi, rxb, 0); 1096 else 1097 iwl_mvm_rx_common(mvm, rxb, pkt); 1098 } 1099 1100 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode, 1101 const struct iwl_device_cmd *cmd) 1102 { 1103 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1104 1105 /* 1106 * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA 1107 * commands that need to block the Tx queues. 1108 */ 1109 iwl_trans_block_txq_ptrs(mvm->trans, false); 1110 } 1111 1112 static int iwl_mvm_is_static_queue(struct iwl_mvm *mvm, int queue) 1113 { 1114 return queue == mvm->aux_queue || queue == mvm->probe_queue || 1115 queue == mvm->p2p_dev_queue || queue == mvm->snif_queue; 1116 } 1117 1118 static void iwl_mvm_queue_state_change(struct iwl_op_mode *op_mode, 1119 int hw_queue, bool start) 1120 { 1121 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1122 struct ieee80211_sta *sta; 1123 struct ieee80211_txq *txq; 1124 struct iwl_mvm_txq *mvmtxq; 1125 int i; 1126 unsigned long tid_bitmap; 1127 struct iwl_mvm_sta *mvmsta; 1128 u8 sta_id; 1129 1130 sta_id = iwl_mvm_has_new_tx_api(mvm) ? 1131 mvm->tvqm_info[hw_queue].sta_id : 1132 mvm->queue_info[hw_queue].ra_sta_id; 1133 1134 if (WARN_ON_ONCE(sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id))) 1135 return; 1136 1137 rcu_read_lock(); 1138 1139 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 1140 if (IS_ERR_OR_NULL(sta)) 1141 goto out; 1142 mvmsta = iwl_mvm_sta_from_mac80211(sta); 1143 1144 if (iwl_mvm_is_static_queue(mvm, hw_queue)) { 1145 if (!start) 1146 ieee80211_stop_queues(mvm->hw); 1147 else if (mvmsta->sta_state != IEEE80211_STA_NOTEXIST) 1148 ieee80211_wake_queues(mvm->hw); 1149 1150 goto out; 1151 } 1152 1153 if (iwl_mvm_has_new_tx_api(mvm)) { 1154 int tid = mvm->tvqm_info[hw_queue].txq_tid; 1155 1156 tid_bitmap = BIT(tid); 1157 } else { 1158 tid_bitmap = mvm->queue_info[hw_queue].tid_bitmap; 1159 } 1160 1161 for_each_set_bit(i, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1162 int tid = i; 1163 1164 if (tid == IWL_MAX_TID_COUNT) 1165 tid = IEEE80211_NUM_TIDS; 1166 1167 txq = sta->txq[tid]; 1168 mvmtxq = iwl_mvm_txq_from_mac80211(txq); 1169 mvmtxq->stopped = !start; 1170 1171 if (start && mvmsta->sta_state != IEEE80211_STA_NOTEXIST) 1172 iwl_mvm_mac_itxq_xmit(mvm->hw, txq); 1173 } 1174 1175 out: 1176 rcu_read_unlock(); 1177 } 1178 1179 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue) 1180 { 1181 iwl_mvm_queue_state_change(op_mode, hw_queue, false); 1182 } 1183 1184 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue) 1185 { 1186 iwl_mvm_queue_state_change(op_mode, hw_queue, true); 1187 } 1188 1189 static void iwl_mvm_set_rfkill_state(struct iwl_mvm *mvm) 1190 { 1191 bool state = iwl_mvm_is_radio_killed(mvm); 1192 1193 if (state) 1194 wake_up(&mvm->rx_sync_waitq); 1195 1196 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, state); 1197 } 1198 1199 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state) 1200 { 1201 if (state) 1202 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); 1203 else 1204 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); 1205 1206 iwl_mvm_set_rfkill_state(mvm); 1207 } 1208 1209 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state) 1210 { 1211 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1212 bool rfkill_safe_init_done = READ_ONCE(mvm->rfkill_safe_init_done); 1213 bool unified = iwl_mvm_has_unified_ucode(mvm); 1214 1215 if (state) 1216 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); 1217 else 1218 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); 1219 1220 iwl_mvm_set_rfkill_state(mvm); 1221 1222 /* iwl_run_init_mvm_ucode is waiting for results, abort it. */ 1223 if (rfkill_safe_init_done) 1224 iwl_abort_notification_waits(&mvm->notif_wait); 1225 1226 /* 1227 * Don't ask the transport to stop the firmware. We'll do it 1228 * after cfg80211 takes us down. 1229 */ 1230 if (unified) 1231 return false; 1232 1233 /* 1234 * Stop the device if we run OPERATIONAL firmware or if we are in the 1235 * middle of the calibrations. 1236 */ 1237 return state && (mvm->fwrt.cur_fw_img != IWL_UCODE_INIT || 1238 rfkill_safe_init_done); 1239 } 1240 1241 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb) 1242 { 1243 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1244 struct ieee80211_tx_info *info; 1245 1246 info = IEEE80211_SKB_CB(skb); 1247 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]); 1248 ieee80211_free_txskb(mvm->hw, skb); 1249 } 1250 1251 struct iwl_mvm_reprobe { 1252 struct device *dev; 1253 struct work_struct work; 1254 }; 1255 1256 static void iwl_mvm_reprobe_wk(struct work_struct *wk) 1257 { 1258 struct iwl_mvm_reprobe *reprobe; 1259 1260 reprobe = container_of(wk, struct iwl_mvm_reprobe, work); 1261 if (device_reprobe(reprobe->dev)) 1262 dev_err(reprobe->dev, "reprobe failed!\n"); 1263 kfree(reprobe); 1264 module_put(THIS_MODULE); 1265 } 1266 1267 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error) 1268 { 1269 iwl_abort_notification_waits(&mvm->notif_wait); 1270 del_timer(&mvm->fwrt.dump.periodic_trig); 1271 1272 /* 1273 * This is a bit racy, but worst case we tell mac80211 about 1274 * a stopped/aborted scan when that was already done which 1275 * is not a problem. It is necessary to abort any os scan 1276 * here because mac80211 requires having the scan cleared 1277 * before restarting. 1278 * We'll reset the scan_status to NONE in restart cleanup in 1279 * the next start() call from mac80211. If restart isn't called 1280 * (no fw restart) scan status will stay busy. 1281 */ 1282 iwl_mvm_report_scan_aborted(mvm); 1283 1284 /* 1285 * If we're restarting already, don't cycle restarts. 1286 * If INIT fw asserted, it will likely fail again. 1287 * If WoWLAN fw asserted, don't restart either, mac80211 1288 * can't recover this since we're already half suspended. 1289 */ 1290 if (!mvm->fw_restart && fw_error) { 1291 iwl_fw_error_collect(&mvm->fwrt); 1292 } else if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1293 struct iwl_mvm_reprobe *reprobe; 1294 1295 IWL_ERR(mvm, 1296 "Firmware error during reconfiguration - reprobe!\n"); 1297 1298 /* 1299 * get a module reference to avoid doing this while unloading 1300 * anyway and to avoid scheduling a work with code that's 1301 * being removed. 1302 */ 1303 if (!try_module_get(THIS_MODULE)) { 1304 IWL_ERR(mvm, "Module is being unloaded - abort\n"); 1305 return; 1306 } 1307 1308 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC); 1309 if (!reprobe) { 1310 module_put(THIS_MODULE); 1311 return; 1312 } 1313 reprobe->dev = mvm->trans->dev; 1314 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk); 1315 schedule_work(&reprobe->work); 1316 } else if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, 1317 &mvm->status)) { 1318 IWL_ERR(mvm, "HW restart already requested, but not started\n"); 1319 } else if (mvm->fwrt.cur_fw_img == IWL_UCODE_REGULAR && 1320 mvm->hw_registered && 1321 !test_bit(STATUS_TRANS_DEAD, &mvm->trans->status)) { 1322 /* don't let the transport/FW power down */ 1323 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); 1324 1325 if (mvm->fw->ucode_capa.error_log_size) { 1326 u32 src_size = mvm->fw->ucode_capa.error_log_size; 1327 u32 src_addr = mvm->fw->ucode_capa.error_log_addr; 1328 u8 *recover_buf = kzalloc(src_size, GFP_ATOMIC); 1329 1330 if (recover_buf) { 1331 mvm->error_recovery_buf = recover_buf; 1332 iwl_trans_read_mem_bytes(mvm->trans, 1333 src_addr, 1334 recover_buf, 1335 src_size); 1336 } 1337 } 1338 1339 iwl_fw_error_collect(&mvm->fwrt); 1340 1341 if (fw_error && mvm->fw_restart > 0) 1342 mvm->fw_restart--; 1343 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); 1344 ieee80211_restart_hw(mvm->hw); 1345 } 1346 } 1347 1348 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode) 1349 { 1350 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1351 1352 if (!test_bit(STATUS_TRANS_DEAD, &mvm->trans->status)) 1353 iwl_mvm_dump_nic_error_log(mvm); 1354 1355 iwl_mvm_nic_restart(mvm, true); 1356 } 1357 1358 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode) 1359 { 1360 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1361 1362 WARN_ON(1); 1363 iwl_mvm_nic_restart(mvm, true); 1364 } 1365 1366 #ifdef CONFIG_PM 1367 struct iwl_d0i3_iter_data { 1368 struct iwl_mvm *mvm; 1369 struct ieee80211_vif *connected_vif; 1370 u8 ap_sta_id; 1371 u8 vif_count; 1372 u8 offloading_tid; 1373 bool disable_offloading; 1374 }; 1375 1376 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm, 1377 struct ieee80211_vif *vif, 1378 struct iwl_d0i3_iter_data *iter_data) 1379 { 1380 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1381 struct iwl_mvm_sta *mvmsta; 1382 u32 available_tids = 0; 1383 u8 tid; 1384 1385 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION || 1386 mvmvif->ap_sta_id == IWL_MVM_INVALID_STA)) 1387 return false; 1388 1389 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); 1390 if (!mvmsta) 1391 return false; 1392 1393 spin_lock_bh(&mvmsta->lock); 1394 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1395 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 1396 1397 /* 1398 * in case of pending tx packets, don't use this tid 1399 * for offloading in order to prevent reuse of the same 1400 * qos seq counters. 1401 */ 1402 if (iwl_mvm_tid_queued(mvm, tid_data)) 1403 continue; 1404 1405 if (tid_data->state != IWL_AGG_OFF) 1406 continue; 1407 1408 available_tids |= BIT(tid); 1409 } 1410 spin_unlock_bh(&mvmsta->lock); 1411 1412 /* 1413 * disallow protocol offloading if we have no available tid 1414 * (with no pending frames and no active aggregation, 1415 * as we don't handle "holes" properly - the scheduler needs the 1416 * frame's seq number and TFD index to match) 1417 */ 1418 if (!available_tids) 1419 return true; 1420 1421 /* for simplicity, just use the first available tid */ 1422 iter_data->offloading_tid = ffs(available_tids) - 1; 1423 return false; 1424 } 1425 1426 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac, 1427 struct ieee80211_vif *vif) 1428 { 1429 struct iwl_d0i3_iter_data *data = _data; 1430 struct iwl_mvm *mvm = data->mvm; 1431 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1432 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; 1433 1434 IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr); 1435 if (vif->type != NL80211_IFTYPE_STATION || 1436 !vif->bss_conf.assoc) 1437 return; 1438 1439 /* 1440 * in case of pending tx packets or active aggregations, 1441 * avoid offloading features in order to prevent reuse of 1442 * the same qos seq counters. 1443 */ 1444 if (iwl_mvm_disallow_offloading(mvm, vif, data)) 1445 data->disable_offloading = true; 1446 1447 iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags); 1448 iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading, 1449 false, flags); 1450 1451 /* 1452 * on init/association, mvm already configures POWER_TABLE_CMD 1453 * and REPLY_MCAST_FILTER_CMD, so currently don't 1454 * reconfigure them (we might want to use different 1455 * params later on, though). 1456 */ 1457 data->ap_sta_id = mvmvif->ap_sta_id; 1458 data->vif_count++; 1459 1460 /* 1461 * no new commands can be sent at this stage, so it's safe 1462 * to save the vif pointer during d0i3 entrance. 1463 */ 1464 data->connected_vif = vif; 1465 } 1466 1467 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm, 1468 struct iwl_wowlan_config_cmd *cmd, 1469 struct iwl_d0i3_iter_data *iter_data) 1470 { 1471 struct ieee80211_sta *ap_sta; 1472 struct iwl_mvm_sta *mvm_ap_sta; 1473 1474 if (iter_data->ap_sta_id == IWL_MVM_INVALID_STA) 1475 return; 1476 1477 rcu_read_lock(); 1478 1479 ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]); 1480 if (IS_ERR_OR_NULL(ap_sta)) 1481 goto out; 1482 1483 mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta); 1484 cmd->is_11n_connection = ap_sta->ht_cap.ht_supported; 1485 cmd->offloading_tid = iter_data->offloading_tid; 1486 cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING | 1487 ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON; 1488 /* 1489 * The d0i3 uCode takes care of the nonqos counters, 1490 * so configure only the qos seq ones. 1491 */ 1492 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd); 1493 out: 1494 rcu_read_unlock(); 1495 } 1496 1497 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode) 1498 { 1499 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1500 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; 1501 int ret; 1502 struct iwl_d0i3_iter_data d0i3_iter_data = { 1503 .mvm = mvm, 1504 }; 1505 struct iwl_wowlan_config_cmd wowlan_config_cmd = { 1506 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME | 1507 IWL_WOWLAN_WAKEUP_BEACON_MISS | 1508 IWL_WOWLAN_WAKEUP_LINK_CHANGE), 1509 }; 1510 struct iwl_d3_manager_config d3_cfg_cmd = { 1511 .min_sleep_time = cpu_to_le32(1000), 1512 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR), 1513 }; 1514 1515 IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n"); 1516 1517 if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR)) 1518 return -EINVAL; 1519 1520 set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1521 1522 /* 1523 * iwl_mvm_ref_sync takes a reference before checking the flag. 1524 * so by checking there is no held reference we prevent a state 1525 * in which iwl_mvm_ref_sync continues successfully while we 1526 * configure the firmware to enter d0i3 1527 */ 1528 if (iwl_mvm_ref_taken(mvm)) { 1529 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n"); 1530 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1531 wake_up(&mvm->d0i3_exit_waitq); 1532 return 1; 1533 } 1534 1535 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1536 IEEE80211_IFACE_ITER_NORMAL, 1537 iwl_mvm_enter_d0i3_iterator, 1538 &d0i3_iter_data); 1539 if (d0i3_iter_data.vif_count == 1) { 1540 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id; 1541 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading; 1542 } else { 1543 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1); 1544 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA; 1545 mvm->d0i3_offloading = false; 1546 } 1547 1548 iwl_mvm_pause_tcm(mvm, true); 1549 /* make sure we have no running tx while configuring the seqno */ 1550 synchronize_net(); 1551 1552 /* Flush the hw queues, in case something got queued during entry */ 1553 /* TODO new tx api */ 1554 if (iwl_mvm_has_new_tx_api(mvm)) { 1555 WARN_ONCE(1, "d0i3: Need to implement flush TX queue\n"); 1556 } else { 1557 ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm), 1558 flags); 1559 if (ret) 1560 return ret; 1561 } 1562 1563 /* configure wowlan configuration only if needed */ 1564 if (mvm->d0i3_ap_sta_id != IWL_MVM_INVALID_STA) { 1565 /* wake on beacons only if beacon storing isn't supported */ 1566 if (!fw_has_capa(&mvm->fw->ucode_capa, 1567 IWL_UCODE_TLV_CAPA_BEACON_STORING)) 1568 wowlan_config_cmd.wakeup_filter |= 1569 cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING); 1570 1571 iwl_mvm_wowlan_config_key_params(mvm, 1572 d0i3_iter_data.connected_vif, 1573 true, flags); 1574 1575 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd, 1576 &d0i3_iter_data); 1577 1578 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags, 1579 sizeof(wowlan_config_cmd), 1580 &wowlan_config_cmd); 1581 if (ret) 1582 return ret; 1583 } 1584 1585 return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD, 1586 flags | CMD_MAKE_TRANS_IDLE, 1587 sizeof(d3_cfg_cmd), &d3_cfg_cmd); 1588 } 1589 1590 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac, 1591 struct ieee80211_vif *vif) 1592 { 1593 struct iwl_mvm *mvm = _data; 1594 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO; 1595 1596 IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr); 1597 if (vif->type != NL80211_IFTYPE_STATION || 1598 !vif->bss_conf.assoc) 1599 return; 1600 1601 iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags); 1602 } 1603 1604 struct iwl_mvm_d0i3_exit_work_iter_data { 1605 struct iwl_mvm *mvm; 1606 struct iwl_wowlan_status *status; 1607 u32 wakeup_reasons; 1608 }; 1609 1610 static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac, 1611 struct ieee80211_vif *vif) 1612 { 1613 struct iwl_mvm_d0i3_exit_work_iter_data *data = _data; 1614 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1615 u32 reasons = data->wakeup_reasons; 1616 1617 /* consider only the relevant station interface */ 1618 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc || 1619 data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id) 1620 return; 1621 1622 if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH) 1623 iwl_mvm_connection_loss(data->mvm, vif, "D0i3"); 1624 else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON) 1625 ieee80211_beacon_loss(vif); 1626 else 1627 iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status); 1628 } 1629 1630 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq) 1631 { 1632 struct ieee80211_sta *sta = NULL; 1633 struct iwl_mvm_sta *mvm_ap_sta; 1634 int i; 1635 bool wake_queues = false; 1636 1637 lockdep_assert_held(&mvm->mutex); 1638 1639 spin_lock_bh(&mvm->d0i3_tx_lock); 1640 1641 if (mvm->d0i3_ap_sta_id == IWL_MVM_INVALID_STA) 1642 goto out; 1643 1644 IWL_DEBUG_RPM(mvm, "re-enqueue packets\n"); 1645 1646 /* get the sta in order to update seq numbers and re-enqueue skbs */ 1647 sta = rcu_dereference_protected( 1648 mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id], 1649 lockdep_is_held(&mvm->mutex)); 1650 1651 if (IS_ERR_OR_NULL(sta)) { 1652 sta = NULL; 1653 goto out; 1654 } 1655 1656 if (mvm->d0i3_offloading && qos_seq) { 1657 /* update qos seq numbers if offloading was enabled */ 1658 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta); 1659 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1660 u16 seq = le16_to_cpu(qos_seq[i]); 1661 /* firmware stores last-used one, we store next one */ 1662 seq += 0x10; 1663 mvm_ap_sta->tid_data[i].seq_number = seq; 1664 } 1665 } 1666 out: 1667 /* re-enqueue (or drop) all packets */ 1668 while (!skb_queue_empty(&mvm->d0i3_tx)) { 1669 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx); 1670 1671 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta)) 1672 ieee80211_free_txskb(mvm->hw, skb); 1673 1674 /* if the skb_queue is not empty, we need to wake queues */ 1675 wake_queues = true; 1676 } 1677 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1678 wake_up(&mvm->d0i3_exit_waitq); 1679 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA; 1680 if (wake_queues) 1681 ieee80211_wake_queues(mvm->hw); 1682 1683 spin_unlock_bh(&mvm->d0i3_tx_lock); 1684 } 1685 1686 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk) 1687 { 1688 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work); 1689 struct iwl_mvm_d0i3_exit_work_iter_data iter_data = { 1690 .mvm = mvm, 1691 }; 1692 1693 struct iwl_wowlan_status *status; 1694 u32 wakeup_reasons = 0; 1695 __le16 *qos_seq = NULL; 1696 1697 mutex_lock(&mvm->mutex); 1698 1699 status = iwl_mvm_send_wowlan_get_status(mvm); 1700 if (IS_ERR_OR_NULL(status)) { 1701 /* set to NULL so we don't need to check before kfree'ing */ 1702 status = NULL; 1703 goto out; 1704 } 1705 1706 wakeup_reasons = le32_to_cpu(status->wakeup_reasons); 1707 qos_seq = status->qos_seq_ctr; 1708 1709 IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons); 1710 1711 iter_data.wakeup_reasons = wakeup_reasons; 1712 iter_data.status = status; 1713 ieee80211_iterate_active_interfaces(mvm->hw, 1714 IEEE80211_IFACE_ITER_NORMAL, 1715 iwl_mvm_d0i3_exit_work_iter, 1716 &iter_data); 1717 out: 1718 iwl_mvm_d0i3_enable_tx(mvm, qos_seq); 1719 1720 IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n", 1721 wakeup_reasons); 1722 1723 /* qos_seq might point inside resp_pkt, so free it only now */ 1724 kfree(status); 1725 1726 /* the FW might have updated the regdomain */ 1727 iwl_mvm_update_changed_regdom(mvm); 1728 1729 iwl_mvm_resume_tcm(mvm); 1730 iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK); 1731 mutex_unlock(&mvm->mutex); 1732 } 1733 1734 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm) 1735 { 1736 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE | 1737 CMD_WAKE_UP_TRANS; 1738 int ret; 1739 1740 IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n"); 1741 1742 if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR)) 1743 return -EINVAL; 1744 1745 mutex_lock(&mvm->d0i3_suspend_mutex); 1746 if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) { 1747 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n"); 1748 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags); 1749 mutex_unlock(&mvm->d0i3_suspend_mutex); 1750 return 0; 1751 } 1752 mutex_unlock(&mvm->d0i3_suspend_mutex); 1753 1754 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL); 1755 if (ret) 1756 goto out; 1757 1758 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1759 IEEE80211_IFACE_ITER_NORMAL, 1760 iwl_mvm_exit_d0i3_iterator, 1761 mvm); 1762 out: 1763 schedule_work(&mvm->d0i3_exit_work); 1764 return ret; 1765 } 1766 1767 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode) 1768 { 1769 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1770 1771 iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK); 1772 return _iwl_mvm_exit_d0i3(mvm); 1773 } 1774 1775 #define IWL_MVM_D0I3_OPS \ 1776 .enter_d0i3 = iwl_mvm_enter_d0i3, \ 1777 .exit_d0i3 = iwl_mvm_exit_d0i3, 1778 #else /* CONFIG_PM */ 1779 #define IWL_MVM_D0I3_OPS 1780 #endif /* CONFIG_PM */ 1781 1782 #define IWL_MVM_COMMON_OPS \ 1783 /* these could be differentiated */ \ 1784 .async_cb = iwl_mvm_async_cb, \ 1785 .queue_full = iwl_mvm_stop_sw_queue, \ 1786 .queue_not_full = iwl_mvm_wake_sw_queue, \ 1787 .hw_rf_kill = iwl_mvm_set_hw_rfkill_state, \ 1788 .free_skb = iwl_mvm_free_skb, \ 1789 .nic_error = iwl_mvm_nic_error, \ 1790 .cmd_queue_full = iwl_mvm_cmd_queue_full, \ 1791 .nic_config = iwl_mvm_nic_config, \ 1792 IWL_MVM_D0I3_OPS \ 1793 /* as we only register one, these MUST be common! */ \ 1794 .start = iwl_op_mode_mvm_start, \ 1795 .stop = iwl_op_mode_mvm_stop 1796 1797 static const struct iwl_op_mode_ops iwl_mvm_ops = { 1798 IWL_MVM_COMMON_OPS, 1799 .rx = iwl_mvm_rx, 1800 }; 1801 1802 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode, 1803 struct napi_struct *napi, 1804 struct iwl_rx_cmd_buffer *rxb, 1805 unsigned int queue) 1806 { 1807 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1808 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1809 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); 1810 1811 if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))) 1812 iwl_mvm_rx_frame_release(mvm, napi, rxb, queue); 1813 else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP, 1814 RX_QUEUES_NOTIFICATION))) 1815 iwl_mvm_rx_queue_notif(mvm, rxb, queue); 1816 else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))) 1817 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue); 1818 } 1819 1820 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = { 1821 IWL_MVM_COMMON_OPS, 1822 .rx = iwl_mvm_rx_mq, 1823 .rx_rss = iwl_mvm_rx_mq_rss, 1824 }; 1825