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 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 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; 568 569 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT); 570 if (ret) 571 return ret; 572 573 mutex_lock(&mvm->mutex); 574 575 return 0; 576 } 577 578 static void iwl_mvm_fwrt_dump_end(void *ctx) 579 { 580 struct iwl_mvm *mvm = ctx; 581 582 mutex_unlock(&mvm->mutex); 583 584 iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT); 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) 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 err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir); 866 if (err) 867 goto out_unregister; 868 869 if (!iwl_mvm_has_new_rx_stats_api(mvm)) 870 memset(&mvm->rx_stats_v3, 0, 871 sizeof(struct mvm_statistics_rx_v3)); 872 else 873 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx)); 874 875 /* The transport always starts with a taken reference, we can 876 * release it now if d0i3 is supported */ 877 if (iwl_mvm_is_d0i3_supported(mvm)) 878 iwl_trans_unref(mvm->trans); 879 880 iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx); 881 882 return op_mode; 883 884 out_unregister: 885 if (iwlmvm_mod_params.init_dbg) 886 return op_mode; 887 888 ieee80211_unregister_hw(mvm->hw); 889 mvm->hw_registered = false; 890 iwl_mvm_leds_exit(mvm); 891 iwl_mvm_thermal_exit(mvm); 892 out_free: 893 iwl_fw_flush_dump(&mvm->fwrt); 894 iwl_fw_runtime_free(&mvm->fwrt); 895 896 if (iwlmvm_mod_params.init_dbg) 897 return op_mode; 898 iwl_phy_db_free(mvm->phy_db); 899 kfree(mvm->scan_cmd); 900 iwl_trans_op_mode_leave(trans); 901 902 ieee80211_free_hw(mvm->hw); 903 return NULL; 904 } 905 906 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode) 907 { 908 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 909 int i; 910 911 /* If d0i3 is supported, we have released the reference that 912 * the transport started with, so we should take it back now 913 * that we are leaving. 914 */ 915 if (iwl_mvm_is_d0i3_supported(mvm)) 916 iwl_trans_ref(mvm->trans); 917 918 iwl_mvm_leds_exit(mvm); 919 920 iwl_mvm_thermal_exit(mvm); 921 922 ieee80211_unregister_hw(mvm->hw); 923 924 kfree(mvm->scan_cmd); 925 kfree(mvm->mcast_filter_cmd); 926 mvm->mcast_filter_cmd = NULL; 927 928 kfree(mvm->error_recovery_buf); 929 mvm->error_recovery_buf = NULL; 930 931 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS) 932 kfree(mvm->d3_resume_sram); 933 #endif 934 iwl_trans_op_mode_leave(mvm->trans); 935 936 iwl_phy_db_free(mvm->phy_db); 937 mvm->phy_db = NULL; 938 939 kfree(mvm->nvm_data); 940 for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++) 941 kfree(mvm->nvm_sections[i].data); 942 943 cancel_delayed_work_sync(&mvm->tcm.work); 944 945 iwl_fw_runtime_free(&mvm->fwrt); 946 mutex_destroy(&mvm->mutex); 947 mutex_destroy(&mvm->d0i3_suspend_mutex); 948 949 ieee80211_free_hw(mvm->hw); 950 } 951 952 struct iwl_async_handler_entry { 953 struct list_head list; 954 struct iwl_rx_cmd_buffer rxb; 955 enum iwl_rx_handler_context context; 956 void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb); 957 }; 958 959 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm) 960 { 961 struct iwl_async_handler_entry *entry, *tmp; 962 963 spin_lock_bh(&mvm->async_handlers_lock); 964 list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) { 965 iwl_free_rxb(&entry->rxb); 966 list_del(&entry->list); 967 kfree(entry); 968 } 969 spin_unlock_bh(&mvm->async_handlers_lock); 970 } 971 972 static void iwl_mvm_async_handlers_wk(struct work_struct *wk) 973 { 974 struct iwl_mvm *mvm = 975 container_of(wk, struct iwl_mvm, async_handlers_wk); 976 struct iwl_async_handler_entry *entry, *tmp; 977 LIST_HEAD(local_list); 978 979 /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */ 980 981 /* 982 * Sync with Rx path with a lock. Remove all the entries from this list, 983 * add them to a local one (lock free), and then handle them. 984 */ 985 spin_lock_bh(&mvm->async_handlers_lock); 986 list_splice_init(&mvm->async_handlers_list, &local_list); 987 spin_unlock_bh(&mvm->async_handlers_lock); 988 989 list_for_each_entry_safe(entry, tmp, &local_list, list) { 990 if (entry->context == RX_HANDLER_ASYNC_LOCKED) 991 mutex_lock(&mvm->mutex); 992 entry->fn(mvm, &entry->rxb); 993 iwl_free_rxb(&entry->rxb); 994 list_del(&entry->list); 995 if (entry->context == RX_HANDLER_ASYNC_LOCKED) 996 mutex_unlock(&mvm->mutex); 997 kfree(entry); 998 } 999 } 1000 1001 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm, 1002 struct iwl_rx_packet *pkt) 1003 { 1004 struct iwl_fw_dbg_trigger_tlv *trig; 1005 struct iwl_fw_dbg_trigger_cmd *cmds_trig; 1006 int i; 1007 1008 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, NULL, 1009 FW_DBG_TRIGGER_FW_NOTIF); 1010 if (!trig) 1011 return; 1012 1013 cmds_trig = (void *)trig->data; 1014 1015 for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) { 1016 /* don't collect on CMD 0 */ 1017 if (!cmds_trig->cmds[i].cmd_id) 1018 break; 1019 1020 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd || 1021 cmds_trig->cmds[i].group_id != pkt->hdr.group_id) 1022 continue; 1023 1024 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 1025 "CMD 0x%02x.%02x received", 1026 pkt->hdr.group_id, pkt->hdr.cmd); 1027 break; 1028 } 1029 } 1030 1031 static void iwl_mvm_rx_common(struct iwl_mvm *mvm, 1032 struct iwl_rx_cmd_buffer *rxb, 1033 struct iwl_rx_packet *pkt) 1034 { 1035 int i; 1036 1037 iwl_mvm_rx_check_trigger(mvm, pkt); 1038 1039 /* 1040 * Do the notification wait before RX handlers so 1041 * even if the RX handler consumes the RXB we have 1042 * access to it in the notification wait entry. 1043 */ 1044 iwl_notification_wait_notify(&mvm->notif_wait, pkt); 1045 1046 for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) { 1047 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i]; 1048 struct iwl_async_handler_entry *entry; 1049 1050 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) 1051 continue; 1052 1053 if (rx_h->context == RX_HANDLER_SYNC) { 1054 rx_h->fn(mvm, rxb); 1055 return; 1056 } 1057 1058 entry = kzalloc(sizeof(*entry), GFP_ATOMIC); 1059 /* we can't do much... */ 1060 if (!entry) 1061 return; 1062 1063 entry->rxb._page = rxb_steal_page(rxb); 1064 entry->rxb._offset = rxb->_offset; 1065 entry->rxb._rx_page_order = rxb->_rx_page_order; 1066 entry->fn = rx_h->fn; 1067 entry->context = rx_h->context; 1068 spin_lock(&mvm->async_handlers_lock); 1069 list_add_tail(&entry->list, &mvm->async_handlers_list); 1070 spin_unlock(&mvm->async_handlers_lock); 1071 schedule_work(&mvm->async_handlers_wk); 1072 break; 1073 } 1074 } 1075 1076 static void iwl_mvm_rx(struct iwl_op_mode *op_mode, 1077 struct napi_struct *napi, 1078 struct iwl_rx_cmd_buffer *rxb) 1079 { 1080 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1081 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1082 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); 1083 1084 if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))) 1085 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb); 1086 else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD)) 1087 iwl_mvm_rx_rx_phy_cmd(mvm, rxb); 1088 else 1089 iwl_mvm_rx_common(mvm, rxb, pkt); 1090 } 1091 1092 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode, 1093 struct napi_struct *napi, 1094 struct iwl_rx_cmd_buffer *rxb) 1095 { 1096 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1097 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1098 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); 1099 1100 if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))) 1101 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0); 1102 else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP, 1103 RX_QUEUES_NOTIFICATION))) 1104 iwl_mvm_rx_queue_notif(mvm, rxb, 0); 1105 else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)) 1106 iwl_mvm_rx_frame_release(mvm, napi, rxb, 0); 1107 else if (cmd == WIDE_ID(DATA_PATH_GROUP, RX_NO_DATA_NOTIF)) 1108 iwl_mvm_rx_monitor_ndp(mvm, napi, rxb, 0); 1109 else 1110 iwl_mvm_rx_common(mvm, rxb, pkt); 1111 } 1112 1113 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode, 1114 const struct iwl_device_cmd *cmd) 1115 { 1116 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1117 1118 /* 1119 * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA 1120 * commands that need to block the Tx queues. 1121 */ 1122 iwl_trans_block_txq_ptrs(mvm->trans, false); 1123 } 1124 1125 static int iwl_mvm_is_static_queue(struct iwl_mvm *mvm, int queue) 1126 { 1127 return queue == mvm->aux_queue || queue == mvm->probe_queue || 1128 queue == mvm->p2p_dev_queue || queue == mvm->snif_queue; 1129 } 1130 1131 static void iwl_mvm_queue_state_change(struct iwl_op_mode *op_mode, 1132 int hw_queue, bool start) 1133 { 1134 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1135 struct ieee80211_sta *sta; 1136 struct ieee80211_txq *txq; 1137 struct iwl_mvm_txq *mvmtxq; 1138 int i; 1139 unsigned long tid_bitmap; 1140 struct iwl_mvm_sta *mvmsta; 1141 u8 sta_id; 1142 1143 sta_id = iwl_mvm_has_new_tx_api(mvm) ? 1144 mvm->tvqm_info[hw_queue].sta_id : 1145 mvm->queue_info[hw_queue].ra_sta_id; 1146 1147 if (WARN_ON_ONCE(sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id))) 1148 return; 1149 1150 rcu_read_lock(); 1151 1152 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 1153 if (IS_ERR_OR_NULL(sta)) 1154 goto out; 1155 mvmsta = iwl_mvm_sta_from_mac80211(sta); 1156 1157 if (iwl_mvm_is_static_queue(mvm, hw_queue)) { 1158 if (!start) 1159 ieee80211_stop_queues(mvm->hw); 1160 else if (mvmsta->sta_state != IEEE80211_STA_NOTEXIST) 1161 ieee80211_wake_queues(mvm->hw); 1162 1163 goto out; 1164 } 1165 1166 if (iwl_mvm_has_new_tx_api(mvm)) { 1167 int tid = mvm->tvqm_info[hw_queue].txq_tid; 1168 1169 tid_bitmap = BIT(tid); 1170 } else { 1171 tid_bitmap = mvm->queue_info[hw_queue].tid_bitmap; 1172 } 1173 1174 for_each_set_bit(i, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1175 int tid = i; 1176 1177 if (tid == IWL_MAX_TID_COUNT) 1178 tid = IEEE80211_NUM_TIDS; 1179 1180 txq = sta->txq[tid]; 1181 mvmtxq = iwl_mvm_txq_from_mac80211(txq); 1182 mvmtxq->stopped = !start; 1183 1184 if (start && mvmsta->sta_state != IEEE80211_STA_NOTEXIST) 1185 iwl_mvm_mac_itxq_xmit(mvm->hw, txq); 1186 } 1187 1188 out: 1189 rcu_read_unlock(); 1190 } 1191 1192 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue) 1193 { 1194 iwl_mvm_queue_state_change(op_mode, hw_queue, false); 1195 } 1196 1197 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue) 1198 { 1199 iwl_mvm_queue_state_change(op_mode, hw_queue, true); 1200 } 1201 1202 static void iwl_mvm_set_rfkill_state(struct iwl_mvm *mvm) 1203 { 1204 bool state = iwl_mvm_is_radio_killed(mvm); 1205 1206 if (state) 1207 wake_up(&mvm->rx_sync_waitq); 1208 1209 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, state); 1210 } 1211 1212 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state) 1213 { 1214 if (state) 1215 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); 1216 else 1217 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); 1218 1219 iwl_mvm_set_rfkill_state(mvm); 1220 } 1221 1222 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state) 1223 { 1224 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1225 bool calibrating = READ_ONCE(mvm->calibrating); 1226 1227 if (state) 1228 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); 1229 else 1230 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); 1231 1232 iwl_mvm_set_rfkill_state(mvm); 1233 1234 /* iwl_run_init_mvm_ucode is waiting for results, abort it */ 1235 if (calibrating) 1236 iwl_abort_notification_waits(&mvm->notif_wait); 1237 1238 /* 1239 * Stop the device if we run OPERATIONAL firmware or if we are in the 1240 * middle of the calibrations. 1241 */ 1242 return state && (mvm->fwrt.cur_fw_img != IWL_UCODE_INIT || calibrating); 1243 } 1244 1245 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb) 1246 { 1247 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1248 struct ieee80211_tx_info *info; 1249 1250 info = IEEE80211_SKB_CB(skb); 1251 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]); 1252 ieee80211_free_txskb(mvm->hw, skb); 1253 } 1254 1255 struct iwl_mvm_reprobe { 1256 struct device *dev; 1257 struct work_struct work; 1258 }; 1259 1260 static void iwl_mvm_reprobe_wk(struct work_struct *wk) 1261 { 1262 struct iwl_mvm_reprobe *reprobe; 1263 1264 reprobe = container_of(wk, struct iwl_mvm_reprobe, work); 1265 if (device_reprobe(reprobe->dev)) 1266 dev_err(reprobe->dev, "reprobe failed!\n"); 1267 kfree(reprobe); 1268 module_put(THIS_MODULE); 1269 } 1270 1271 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error) 1272 { 1273 iwl_abort_notification_waits(&mvm->notif_wait); 1274 1275 /* 1276 * This is a bit racy, but worst case we tell mac80211 about 1277 * a stopped/aborted scan when that was already done which 1278 * is not a problem. It is necessary to abort any os scan 1279 * here because mac80211 requires having the scan cleared 1280 * before restarting. 1281 * We'll reset the scan_status to NONE in restart cleanup in 1282 * the next start() call from mac80211. If restart isn't called 1283 * (no fw restart) scan status will stay busy. 1284 */ 1285 iwl_mvm_report_scan_aborted(mvm); 1286 1287 /* 1288 * If we're restarting already, don't cycle restarts. 1289 * If INIT fw asserted, it will likely fail again. 1290 * If WoWLAN fw asserted, don't restart either, mac80211 1291 * can't recover this since we're already half suspended. 1292 */ 1293 if (!mvm->fw_restart && fw_error) { 1294 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert, 1295 false, 0); 1296 } else if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1297 struct iwl_mvm_reprobe *reprobe; 1298 1299 IWL_ERR(mvm, 1300 "Firmware error during reconfiguration - reprobe!\n"); 1301 1302 /* 1303 * get a module reference to avoid doing this while unloading 1304 * anyway and to avoid scheduling a work with code that's 1305 * being removed. 1306 */ 1307 if (!try_module_get(THIS_MODULE)) { 1308 IWL_ERR(mvm, "Module is being unloaded - abort\n"); 1309 return; 1310 } 1311 1312 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC); 1313 if (!reprobe) { 1314 module_put(THIS_MODULE); 1315 return; 1316 } 1317 reprobe->dev = mvm->trans->dev; 1318 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk); 1319 schedule_work(&reprobe->work); 1320 } else if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, 1321 &mvm->status)) { 1322 IWL_ERR(mvm, "HW restart already requested, but not started\n"); 1323 } else if (mvm->fwrt.cur_fw_img == IWL_UCODE_REGULAR && 1324 mvm->hw_registered && 1325 !test_bit(STATUS_TRANS_DEAD, &mvm->trans->status)) { 1326 /* don't let the transport/FW power down */ 1327 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); 1328 1329 if (mvm->fw->ucode_capa.error_log_size) { 1330 u32 src_size = mvm->fw->ucode_capa.error_log_size; 1331 u32 src_addr = mvm->fw->ucode_capa.error_log_addr; 1332 u8 *recover_buf = kzalloc(src_size, GFP_ATOMIC); 1333 1334 if (recover_buf) { 1335 mvm->error_recovery_buf = recover_buf; 1336 iwl_trans_read_mem_bytes(mvm->trans, 1337 src_addr, 1338 recover_buf, 1339 src_size); 1340 } 1341 } 1342 1343 if (fw_error && mvm->fw_restart > 0) 1344 mvm->fw_restart--; 1345 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); 1346 ieee80211_restart_hw(mvm->hw); 1347 } 1348 } 1349 1350 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode) 1351 { 1352 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1353 1354 if (!test_bit(STATUS_TRANS_DEAD, &mvm->trans->status)) 1355 iwl_mvm_dump_nic_error_log(mvm); 1356 1357 iwl_mvm_nic_restart(mvm, true); 1358 } 1359 1360 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode) 1361 { 1362 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1363 1364 WARN_ON(1); 1365 iwl_mvm_nic_restart(mvm, true); 1366 } 1367 1368 #ifdef CONFIG_PM 1369 struct iwl_d0i3_iter_data { 1370 struct iwl_mvm *mvm; 1371 struct ieee80211_vif *connected_vif; 1372 u8 ap_sta_id; 1373 u8 vif_count; 1374 u8 offloading_tid; 1375 bool disable_offloading; 1376 }; 1377 1378 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm, 1379 struct ieee80211_vif *vif, 1380 struct iwl_d0i3_iter_data *iter_data) 1381 { 1382 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1383 struct iwl_mvm_sta *mvmsta; 1384 u32 available_tids = 0; 1385 u8 tid; 1386 1387 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION || 1388 mvmvif->ap_sta_id == IWL_MVM_INVALID_STA)) 1389 return false; 1390 1391 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); 1392 if (!mvmsta) 1393 return false; 1394 1395 spin_lock_bh(&mvmsta->lock); 1396 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1397 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 1398 1399 /* 1400 * in case of pending tx packets, don't use this tid 1401 * for offloading in order to prevent reuse of the same 1402 * qos seq counters. 1403 */ 1404 if (iwl_mvm_tid_queued(mvm, tid_data)) 1405 continue; 1406 1407 if (tid_data->state != IWL_AGG_OFF) 1408 continue; 1409 1410 available_tids |= BIT(tid); 1411 } 1412 spin_unlock_bh(&mvmsta->lock); 1413 1414 /* 1415 * disallow protocol offloading if we have no available tid 1416 * (with no pending frames and no active aggregation, 1417 * as we don't handle "holes" properly - the scheduler needs the 1418 * frame's seq number and TFD index to match) 1419 */ 1420 if (!available_tids) 1421 return true; 1422 1423 /* for simplicity, just use the first available tid */ 1424 iter_data->offloading_tid = ffs(available_tids) - 1; 1425 return false; 1426 } 1427 1428 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac, 1429 struct ieee80211_vif *vif) 1430 { 1431 struct iwl_d0i3_iter_data *data = _data; 1432 struct iwl_mvm *mvm = data->mvm; 1433 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1434 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; 1435 1436 IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr); 1437 if (vif->type != NL80211_IFTYPE_STATION || 1438 !vif->bss_conf.assoc) 1439 return; 1440 1441 /* 1442 * in case of pending tx packets or active aggregations, 1443 * avoid offloading features in order to prevent reuse of 1444 * the same qos seq counters. 1445 */ 1446 if (iwl_mvm_disallow_offloading(mvm, vif, data)) 1447 data->disable_offloading = true; 1448 1449 iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags); 1450 iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading, 1451 false, flags); 1452 1453 /* 1454 * on init/association, mvm already configures POWER_TABLE_CMD 1455 * and REPLY_MCAST_FILTER_CMD, so currently don't 1456 * reconfigure them (we might want to use different 1457 * params later on, though). 1458 */ 1459 data->ap_sta_id = mvmvif->ap_sta_id; 1460 data->vif_count++; 1461 1462 /* 1463 * no new commands can be sent at this stage, so it's safe 1464 * to save the vif pointer during d0i3 entrance. 1465 */ 1466 data->connected_vif = vif; 1467 } 1468 1469 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm, 1470 struct iwl_wowlan_config_cmd *cmd, 1471 struct iwl_d0i3_iter_data *iter_data) 1472 { 1473 struct ieee80211_sta *ap_sta; 1474 struct iwl_mvm_sta *mvm_ap_sta; 1475 1476 if (iter_data->ap_sta_id == IWL_MVM_INVALID_STA) 1477 return; 1478 1479 rcu_read_lock(); 1480 1481 ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]); 1482 if (IS_ERR_OR_NULL(ap_sta)) 1483 goto out; 1484 1485 mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta); 1486 cmd->is_11n_connection = ap_sta->ht_cap.ht_supported; 1487 cmd->offloading_tid = iter_data->offloading_tid; 1488 cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING | 1489 ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON; 1490 /* 1491 * The d0i3 uCode takes care of the nonqos counters, 1492 * so configure only the qos seq ones. 1493 */ 1494 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd); 1495 out: 1496 rcu_read_unlock(); 1497 } 1498 1499 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode) 1500 { 1501 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1502 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; 1503 int ret; 1504 struct iwl_d0i3_iter_data d0i3_iter_data = { 1505 .mvm = mvm, 1506 }; 1507 struct iwl_wowlan_config_cmd wowlan_config_cmd = { 1508 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME | 1509 IWL_WOWLAN_WAKEUP_BEACON_MISS | 1510 IWL_WOWLAN_WAKEUP_LINK_CHANGE), 1511 }; 1512 struct iwl_d3_manager_config d3_cfg_cmd = { 1513 .min_sleep_time = cpu_to_le32(1000), 1514 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR), 1515 }; 1516 1517 IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n"); 1518 1519 if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR)) 1520 return -EINVAL; 1521 1522 set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1523 1524 /* 1525 * iwl_mvm_ref_sync takes a reference before checking the flag. 1526 * so by checking there is no held reference we prevent a state 1527 * in which iwl_mvm_ref_sync continues successfully while we 1528 * configure the firmware to enter d0i3 1529 */ 1530 if (iwl_mvm_ref_taken(mvm)) { 1531 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n"); 1532 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1533 wake_up(&mvm->d0i3_exit_waitq); 1534 return 1; 1535 } 1536 1537 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1538 IEEE80211_IFACE_ITER_NORMAL, 1539 iwl_mvm_enter_d0i3_iterator, 1540 &d0i3_iter_data); 1541 if (d0i3_iter_data.vif_count == 1) { 1542 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id; 1543 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading; 1544 } else { 1545 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1); 1546 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA; 1547 mvm->d0i3_offloading = false; 1548 } 1549 1550 iwl_mvm_pause_tcm(mvm, true); 1551 /* make sure we have no running tx while configuring the seqno */ 1552 synchronize_net(); 1553 1554 /* Flush the hw queues, in case something got queued during entry */ 1555 /* TODO new tx api */ 1556 if (iwl_mvm_has_new_tx_api(mvm)) { 1557 WARN_ONCE(1, "d0i3: Need to implement flush TX queue\n"); 1558 } else { 1559 ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm), 1560 flags); 1561 if (ret) 1562 return ret; 1563 } 1564 1565 /* configure wowlan configuration only if needed */ 1566 if (mvm->d0i3_ap_sta_id != IWL_MVM_INVALID_STA) { 1567 /* wake on beacons only if beacon storing isn't supported */ 1568 if (!fw_has_capa(&mvm->fw->ucode_capa, 1569 IWL_UCODE_TLV_CAPA_BEACON_STORING)) 1570 wowlan_config_cmd.wakeup_filter |= 1571 cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING); 1572 1573 iwl_mvm_wowlan_config_key_params(mvm, 1574 d0i3_iter_data.connected_vif, 1575 true, flags); 1576 1577 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd, 1578 &d0i3_iter_data); 1579 1580 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags, 1581 sizeof(wowlan_config_cmd), 1582 &wowlan_config_cmd); 1583 if (ret) 1584 return ret; 1585 } 1586 1587 return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD, 1588 flags | CMD_MAKE_TRANS_IDLE, 1589 sizeof(d3_cfg_cmd), &d3_cfg_cmd); 1590 } 1591 1592 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac, 1593 struct ieee80211_vif *vif) 1594 { 1595 struct iwl_mvm *mvm = _data; 1596 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO; 1597 1598 IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr); 1599 if (vif->type != NL80211_IFTYPE_STATION || 1600 !vif->bss_conf.assoc) 1601 return; 1602 1603 iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags); 1604 } 1605 1606 struct iwl_mvm_d0i3_exit_work_iter_data { 1607 struct iwl_mvm *mvm; 1608 struct iwl_wowlan_status *status; 1609 u32 wakeup_reasons; 1610 }; 1611 1612 static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac, 1613 struct ieee80211_vif *vif) 1614 { 1615 struct iwl_mvm_d0i3_exit_work_iter_data *data = _data; 1616 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1617 u32 reasons = data->wakeup_reasons; 1618 1619 /* consider only the relevant station interface */ 1620 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc || 1621 data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id) 1622 return; 1623 1624 if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH) 1625 iwl_mvm_connection_loss(data->mvm, vif, "D0i3"); 1626 else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON) 1627 ieee80211_beacon_loss(vif); 1628 else 1629 iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status); 1630 } 1631 1632 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq) 1633 { 1634 struct ieee80211_sta *sta = NULL; 1635 struct iwl_mvm_sta *mvm_ap_sta; 1636 int i; 1637 bool wake_queues = false; 1638 1639 lockdep_assert_held(&mvm->mutex); 1640 1641 spin_lock_bh(&mvm->d0i3_tx_lock); 1642 1643 if (mvm->d0i3_ap_sta_id == IWL_MVM_INVALID_STA) 1644 goto out; 1645 1646 IWL_DEBUG_RPM(mvm, "re-enqueue packets\n"); 1647 1648 /* get the sta in order to update seq numbers and re-enqueue skbs */ 1649 sta = rcu_dereference_protected( 1650 mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id], 1651 lockdep_is_held(&mvm->mutex)); 1652 1653 if (IS_ERR_OR_NULL(sta)) { 1654 sta = NULL; 1655 goto out; 1656 } 1657 1658 if (mvm->d0i3_offloading && qos_seq) { 1659 /* update qos seq numbers if offloading was enabled */ 1660 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta); 1661 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1662 u16 seq = le16_to_cpu(qos_seq[i]); 1663 /* firmware stores last-used one, we store next one */ 1664 seq += 0x10; 1665 mvm_ap_sta->tid_data[i].seq_number = seq; 1666 } 1667 } 1668 out: 1669 /* re-enqueue (or drop) all packets */ 1670 while (!skb_queue_empty(&mvm->d0i3_tx)) { 1671 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx); 1672 1673 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta)) 1674 ieee80211_free_txskb(mvm->hw, skb); 1675 1676 /* if the skb_queue is not empty, we need to wake queues */ 1677 wake_queues = true; 1678 } 1679 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1680 wake_up(&mvm->d0i3_exit_waitq); 1681 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA; 1682 if (wake_queues) 1683 ieee80211_wake_queues(mvm->hw); 1684 1685 spin_unlock_bh(&mvm->d0i3_tx_lock); 1686 } 1687 1688 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk) 1689 { 1690 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work); 1691 struct iwl_mvm_d0i3_exit_work_iter_data iter_data = { 1692 .mvm = mvm, 1693 }; 1694 1695 struct iwl_wowlan_status *status; 1696 u32 wakeup_reasons = 0; 1697 __le16 *qos_seq = NULL; 1698 1699 mutex_lock(&mvm->mutex); 1700 1701 status = iwl_mvm_send_wowlan_get_status(mvm); 1702 if (IS_ERR_OR_NULL(status)) { 1703 /* set to NULL so we don't need to check before kfree'ing */ 1704 status = NULL; 1705 goto out; 1706 } 1707 1708 wakeup_reasons = le32_to_cpu(status->wakeup_reasons); 1709 qos_seq = status->qos_seq_ctr; 1710 1711 IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons); 1712 1713 iter_data.wakeup_reasons = wakeup_reasons; 1714 iter_data.status = status; 1715 ieee80211_iterate_active_interfaces(mvm->hw, 1716 IEEE80211_IFACE_ITER_NORMAL, 1717 iwl_mvm_d0i3_exit_work_iter, 1718 &iter_data); 1719 out: 1720 iwl_mvm_d0i3_enable_tx(mvm, qos_seq); 1721 1722 IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n", 1723 wakeup_reasons); 1724 1725 /* qos_seq might point inside resp_pkt, so free it only now */ 1726 kfree(status); 1727 1728 /* the FW might have updated the regdomain */ 1729 iwl_mvm_update_changed_regdom(mvm); 1730 1731 iwl_mvm_resume_tcm(mvm); 1732 iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK); 1733 mutex_unlock(&mvm->mutex); 1734 } 1735 1736 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm) 1737 { 1738 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE | 1739 CMD_WAKE_UP_TRANS; 1740 int ret; 1741 1742 IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n"); 1743 1744 if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR)) 1745 return -EINVAL; 1746 1747 mutex_lock(&mvm->d0i3_suspend_mutex); 1748 if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) { 1749 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n"); 1750 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags); 1751 mutex_unlock(&mvm->d0i3_suspend_mutex); 1752 return 0; 1753 } 1754 mutex_unlock(&mvm->d0i3_suspend_mutex); 1755 1756 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL); 1757 if (ret) 1758 goto out; 1759 1760 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1761 IEEE80211_IFACE_ITER_NORMAL, 1762 iwl_mvm_exit_d0i3_iterator, 1763 mvm); 1764 out: 1765 schedule_work(&mvm->d0i3_exit_work); 1766 return ret; 1767 } 1768 1769 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode) 1770 { 1771 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1772 1773 iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK); 1774 return _iwl_mvm_exit_d0i3(mvm); 1775 } 1776 1777 #define IWL_MVM_D0I3_OPS \ 1778 .enter_d0i3 = iwl_mvm_enter_d0i3, \ 1779 .exit_d0i3 = iwl_mvm_exit_d0i3, 1780 #else /* CONFIG_PM */ 1781 #define IWL_MVM_D0I3_OPS 1782 #endif /* CONFIG_PM */ 1783 1784 #define IWL_MVM_COMMON_OPS \ 1785 /* these could be differentiated */ \ 1786 .async_cb = iwl_mvm_async_cb, \ 1787 .queue_full = iwl_mvm_stop_sw_queue, \ 1788 .queue_not_full = iwl_mvm_wake_sw_queue, \ 1789 .hw_rf_kill = iwl_mvm_set_hw_rfkill_state, \ 1790 .free_skb = iwl_mvm_free_skb, \ 1791 .nic_error = iwl_mvm_nic_error, \ 1792 .cmd_queue_full = iwl_mvm_cmd_queue_full, \ 1793 .nic_config = iwl_mvm_nic_config, \ 1794 IWL_MVM_D0I3_OPS \ 1795 /* as we only register one, these MUST be common! */ \ 1796 .start = iwl_op_mode_mvm_start, \ 1797 .stop = iwl_op_mode_mvm_stop 1798 1799 static const struct iwl_op_mode_ops iwl_mvm_ops = { 1800 IWL_MVM_COMMON_OPS, 1801 .rx = iwl_mvm_rx, 1802 }; 1803 1804 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode, 1805 struct napi_struct *napi, 1806 struct iwl_rx_cmd_buffer *rxb, 1807 unsigned int queue) 1808 { 1809 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1810 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1811 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); 1812 1813 if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))) 1814 iwl_mvm_rx_frame_release(mvm, napi, rxb, queue); 1815 else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP, 1816 RX_QUEUES_NOTIFICATION))) 1817 iwl_mvm_rx_queue_notif(mvm, rxb, queue); 1818 else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))) 1819 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue); 1820 } 1821 1822 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = { 1823 IWL_MVM_COMMON_OPS, 1824 .rx = iwl_mvm_rx_mq, 1825 .rx_rss = iwl_mvm_rx_mq_rss, 1826 }; 1827