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/api/scan.h" 86 #include "fw/acpi.h" 87 88 #define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux" 89 MODULE_DESCRIPTION(DRV_DESCRIPTION); 90 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR); 91 MODULE_LICENSE("GPL"); 92 93 static const struct iwl_op_mode_ops iwl_mvm_ops; 94 static const struct iwl_op_mode_ops iwl_mvm_ops_mq; 95 96 struct iwl_mvm_mod_params iwlmvm_mod_params = { 97 .power_scheme = IWL_POWER_SCHEME_BPS, 98 .tfd_q_hang_detect = true 99 /* rest of fields are 0 by default */ 100 }; 101 102 module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, 0444); 103 MODULE_PARM_DESC(init_dbg, 104 "set to true to debug an ASSERT in INIT fw (default: false"); 105 module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, 0444); 106 MODULE_PARM_DESC(power_scheme, 107 "power management scheme: 1-active, 2-balanced, 3-low power, default: 2"); 108 module_param_named(tfd_q_hang_detect, iwlmvm_mod_params.tfd_q_hang_detect, 109 bool, 0444); 110 MODULE_PARM_DESC(tfd_q_hang_detect, 111 "TFD queues hang detection (default: true"); 112 113 /* 114 * module init and exit functions 115 */ 116 static int __init iwl_mvm_init(void) 117 { 118 int ret; 119 120 ret = iwl_mvm_rate_control_register(); 121 if (ret) { 122 pr_err("Unable to register rate control algorithm: %d\n", ret); 123 return ret; 124 } 125 126 ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops); 127 if (ret) 128 pr_err("Unable to register MVM op_mode: %d\n", ret); 129 130 return ret; 131 } 132 module_init(iwl_mvm_init); 133 134 static void __exit iwl_mvm_exit(void) 135 { 136 iwl_opmode_deregister("iwlmvm"); 137 iwl_mvm_rate_control_unregister(); 138 } 139 module_exit(iwl_mvm_exit); 140 141 static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode) 142 { 143 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 144 u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash; 145 u32 reg_val = 0; 146 u32 phy_config = iwl_mvm_get_phy_config(mvm); 147 148 radio_cfg_type = (phy_config & FW_PHY_CFG_RADIO_TYPE) >> 149 FW_PHY_CFG_RADIO_TYPE_POS; 150 radio_cfg_step = (phy_config & FW_PHY_CFG_RADIO_STEP) >> 151 FW_PHY_CFG_RADIO_STEP_POS; 152 radio_cfg_dash = (phy_config & FW_PHY_CFG_RADIO_DASH) >> 153 FW_PHY_CFG_RADIO_DASH_POS; 154 155 /* SKU control */ 156 reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) << 157 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP; 158 reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) << 159 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH; 160 161 /* radio configuration */ 162 reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE; 163 reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP; 164 reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH; 165 166 WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) & 167 ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE); 168 169 /* 170 * TODO: Bits 7-8 of CSR in 8000 HW family and higher set the ADC 171 * sampling, and shouldn't be set to any non-zero value. 172 * The same is supposed to be true of the other HW, but unsetting 173 * them (such as the 7260) causes automatic tests to fail on seemingly 174 * unrelated errors. Need to further investigate this, but for now 175 * we'll separate cases. 176 */ 177 if (mvm->trans->cfg->device_family < IWL_DEVICE_FAMILY_8000) 178 reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI; 179 180 if (iwl_fw_dbg_is_d3_debug_enabled(&mvm->fwrt)) 181 reg_val |= CSR_HW_IF_CONFIG_REG_D3_DEBUG; 182 183 iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG, 184 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH | 185 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP | 186 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE | 187 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP | 188 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH | 189 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI | 190 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI | 191 CSR_HW_IF_CONFIG_REG_D3_DEBUG, 192 reg_val); 193 194 IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type, 195 radio_cfg_step, radio_cfg_dash); 196 197 /* 198 * W/A : NIC is stuck in a reset state after Early PCIe power off 199 * (PCIe power is lost before PERST# is asserted), causing ME FW 200 * to lose ownership and not being able to obtain it back. 201 */ 202 if (!mvm->trans->cfg->apmg_not_supported) 203 iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG, 204 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS, 205 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS); 206 } 207 208 /** 209 * enum iwl_rx_handler_context context for Rx handler 210 * @RX_HANDLER_SYNC : this means that it will be called in the Rx path 211 * which can't acquire mvm->mutex. 212 * @RX_HANDLER_ASYNC_LOCKED : If the handler needs to hold mvm->mutex 213 * (and only in this case!), it should be set as ASYNC. In that case, 214 * it will be called from a worker with mvm->mutex held. 215 * @RX_HANDLER_ASYNC_UNLOCKED : in case the handler needs to lock the 216 * mutex itself, it will be called from a worker without mvm->mutex held. 217 */ 218 enum iwl_rx_handler_context { 219 RX_HANDLER_SYNC, 220 RX_HANDLER_ASYNC_LOCKED, 221 RX_HANDLER_ASYNC_UNLOCKED, 222 }; 223 224 /** 225 * struct iwl_rx_handlers handler for FW notification 226 * @cmd_id: command id 227 * @context: see &iwl_rx_handler_context 228 * @fn: the function is called when notification is received 229 */ 230 struct iwl_rx_handlers { 231 u16 cmd_id; 232 enum iwl_rx_handler_context context; 233 void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb); 234 }; 235 236 #define RX_HANDLER(_cmd_id, _fn, _context) \ 237 { .cmd_id = _cmd_id, .fn = _fn, .context = _context } 238 #define RX_HANDLER_GRP(_grp, _cmd, _fn, _context) \ 239 { .cmd_id = WIDE_ID(_grp, _cmd), .fn = _fn, .context = _context } 240 241 /* 242 * Handlers for fw notifications 243 * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME 244 * This list should be in order of frequency for performance purposes. 245 * 246 * The handler can be one from three contexts, see &iwl_rx_handler_context 247 */ 248 static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = { 249 RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, RX_HANDLER_SYNC), 250 RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, RX_HANDLER_SYNC), 251 252 RX_HANDLER_GRP(DATA_PATH_GROUP, TLC_MNG_UPDATE_NOTIF, 253 iwl_mvm_tlc_update_notif, RX_HANDLER_SYNC), 254 255 RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif, 256 RX_HANDLER_ASYNC_LOCKED), 257 RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif, 258 RX_HANDLER_ASYNC_LOCKED), 259 RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics, 260 RX_HANDLER_ASYNC_LOCKED), 261 262 RX_HANDLER(BA_WINDOW_STATUS_NOTIFICATION_ID, 263 iwl_mvm_window_status_notif, RX_HANDLER_SYNC), 264 265 RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif, 266 RX_HANDLER_SYNC), 267 RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc, 268 RX_HANDLER_ASYNC_LOCKED), 269 270 RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, RX_HANDLER_SYNC), 271 272 RX_HANDLER(SCAN_ITERATION_COMPLETE, 273 iwl_mvm_rx_lmac_scan_iter_complete_notif, RX_HANDLER_SYNC), 274 RX_HANDLER(SCAN_OFFLOAD_COMPLETE, 275 iwl_mvm_rx_lmac_scan_complete_notif, 276 RX_HANDLER_ASYNC_LOCKED), 277 RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_match_found, 278 RX_HANDLER_SYNC), 279 RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif, 280 RX_HANDLER_ASYNC_LOCKED), 281 RX_HANDLER(SCAN_ITERATION_COMPLETE_UMAC, 282 iwl_mvm_rx_umac_scan_iter_complete_notif, RX_HANDLER_SYNC), 283 284 RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif, 285 RX_HANDLER_SYNC), 286 287 RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif, 288 RX_HANDLER_SYNC), 289 290 RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, RX_HANDLER_SYNC), 291 RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION, 292 iwl_mvm_power_uapsd_misbehaving_ap_notif, RX_HANDLER_SYNC), 293 RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif, 294 RX_HANDLER_ASYNC_LOCKED), 295 RX_HANDLER_GRP(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE, 296 iwl_mvm_temp_notif, RX_HANDLER_ASYNC_UNLOCKED), 297 RX_HANDLER_GRP(PHY_OPS_GROUP, CT_KILL_NOTIFICATION, 298 iwl_mvm_ct_kill_notif, RX_HANDLER_SYNC), 299 300 RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif, 301 RX_HANDLER_ASYNC_LOCKED), 302 RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif, 303 RX_HANDLER_SYNC), 304 RX_HANDLER(TOF_NOTIFICATION, iwl_mvm_tof_resp_handler, 305 RX_HANDLER_ASYNC_LOCKED), 306 RX_HANDLER_GRP(DEBUG_GROUP, MFU_ASSERT_DUMP_NTF, 307 iwl_mvm_mfu_assert_dump_notif, RX_HANDLER_SYNC), 308 RX_HANDLER_GRP(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF, 309 iwl_mvm_rx_stored_beacon_notif, RX_HANDLER_SYNC), 310 RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF, 311 iwl_mvm_mu_mimo_grp_notif, RX_HANDLER_SYNC), 312 RX_HANDLER_GRP(DATA_PATH_GROUP, STA_PM_NOTIF, 313 iwl_mvm_sta_pm_notif, RX_HANDLER_SYNC), 314 }; 315 #undef RX_HANDLER 316 #undef RX_HANDLER_GRP 317 318 /* Please keep this array *SORTED* by hex value. 319 * Access is done through binary search 320 */ 321 static const struct iwl_hcmd_names iwl_mvm_legacy_names[] = { 322 HCMD_NAME(MVM_ALIVE), 323 HCMD_NAME(REPLY_ERROR), 324 HCMD_NAME(ECHO_CMD), 325 HCMD_NAME(INIT_COMPLETE_NOTIF), 326 HCMD_NAME(PHY_CONTEXT_CMD), 327 HCMD_NAME(DBG_CFG), 328 HCMD_NAME(SCAN_CFG_CMD), 329 HCMD_NAME(SCAN_REQ_UMAC), 330 HCMD_NAME(SCAN_ABORT_UMAC), 331 HCMD_NAME(SCAN_COMPLETE_UMAC), 332 HCMD_NAME(TOF_CMD), 333 HCMD_NAME(TOF_NOTIFICATION), 334 HCMD_NAME(BA_WINDOW_STATUS_NOTIFICATION_ID), 335 HCMD_NAME(ADD_STA_KEY), 336 HCMD_NAME(ADD_STA), 337 HCMD_NAME(REMOVE_STA), 338 HCMD_NAME(FW_GET_ITEM_CMD), 339 HCMD_NAME(TX_CMD), 340 HCMD_NAME(SCD_QUEUE_CFG), 341 HCMD_NAME(TXPATH_FLUSH), 342 HCMD_NAME(MGMT_MCAST_KEY), 343 HCMD_NAME(WEP_KEY), 344 HCMD_NAME(SHARED_MEM_CFG), 345 HCMD_NAME(TDLS_CHANNEL_SWITCH_CMD), 346 HCMD_NAME(MAC_CONTEXT_CMD), 347 HCMD_NAME(TIME_EVENT_CMD), 348 HCMD_NAME(TIME_EVENT_NOTIFICATION), 349 HCMD_NAME(BINDING_CONTEXT_CMD), 350 HCMD_NAME(TIME_QUOTA_CMD), 351 HCMD_NAME(NON_QOS_TX_COUNTER_CMD), 352 HCMD_NAME(LEDS_CMD), 353 HCMD_NAME(LQ_CMD), 354 HCMD_NAME(FW_PAGING_BLOCK_CMD), 355 HCMD_NAME(SCAN_OFFLOAD_REQUEST_CMD), 356 HCMD_NAME(SCAN_OFFLOAD_ABORT_CMD), 357 HCMD_NAME(HOT_SPOT_CMD), 358 HCMD_NAME(SCAN_OFFLOAD_PROFILES_QUERY_CMD), 359 HCMD_NAME(BT_COEX_UPDATE_REDUCED_TXP), 360 HCMD_NAME(BT_COEX_CI), 361 HCMD_NAME(PHY_CONFIGURATION_CMD), 362 HCMD_NAME(CALIB_RES_NOTIF_PHY_DB), 363 HCMD_NAME(PHY_DB_CMD), 364 HCMD_NAME(SCAN_OFFLOAD_COMPLETE), 365 HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_CMD), 366 HCMD_NAME(POWER_TABLE_CMD), 367 HCMD_NAME(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION), 368 HCMD_NAME(REPLY_THERMAL_MNG_BACKOFF), 369 HCMD_NAME(DC2DC_CONFIG_CMD), 370 HCMD_NAME(NVM_ACCESS_CMD), 371 HCMD_NAME(BEACON_NOTIFICATION), 372 HCMD_NAME(BEACON_TEMPLATE_CMD), 373 HCMD_NAME(TX_ANT_CONFIGURATION_CMD), 374 HCMD_NAME(BT_CONFIG), 375 HCMD_NAME(STATISTICS_CMD), 376 HCMD_NAME(STATISTICS_NOTIFICATION), 377 HCMD_NAME(EOSP_NOTIFICATION), 378 HCMD_NAME(REDUCE_TX_POWER_CMD), 379 HCMD_NAME(CARD_STATE_NOTIFICATION), 380 HCMD_NAME(MISSED_BEACONS_NOTIFICATION), 381 HCMD_NAME(TDLS_CONFIG_CMD), 382 HCMD_NAME(MAC_PM_POWER_TABLE), 383 HCMD_NAME(TDLS_CHANNEL_SWITCH_NOTIFICATION), 384 HCMD_NAME(MFUART_LOAD_NOTIFICATION), 385 HCMD_NAME(RSS_CONFIG_CMD), 386 HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC), 387 HCMD_NAME(REPLY_RX_PHY_CMD), 388 HCMD_NAME(REPLY_RX_MPDU_CMD), 389 HCMD_NAME(FRAME_RELEASE), 390 HCMD_NAME(BA_NOTIF), 391 HCMD_NAME(MCC_UPDATE_CMD), 392 HCMD_NAME(MCC_CHUB_UPDATE_CMD), 393 HCMD_NAME(MARKER_CMD), 394 HCMD_NAME(BT_PROFILE_NOTIFICATION), 395 HCMD_NAME(BCAST_FILTER_CMD), 396 HCMD_NAME(MCAST_FILTER_CMD), 397 HCMD_NAME(REPLY_SF_CFG_CMD), 398 HCMD_NAME(REPLY_BEACON_FILTERING_CMD), 399 HCMD_NAME(D3_CONFIG_CMD), 400 HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD), 401 HCMD_NAME(OFFLOADS_QUERY_CMD), 402 HCMD_NAME(REMOTE_WAKE_CONFIG_CMD), 403 HCMD_NAME(MATCH_FOUND_NOTIFICATION), 404 HCMD_NAME(DTS_MEASUREMENT_NOTIFICATION), 405 HCMD_NAME(WOWLAN_PATTERNS), 406 HCMD_NAME(WOWLAN_CONFIGURATION), 407 HCMD_NAME(WOWLAN_TSC_RSC_PARAM), 408 HCMD_NAME(WOWLAN_TKIP_PARAM), 409 HCMD_NAME(WOWLAN_KEK_KCK_MATERIAL), 410 HCMD_NAME(WOWLAN_GET_STATUSES), 411 HCMD_NAME(SCAN_ITERATION_COMPLETE), 412 HCMD_NAME(D0I3_END_CMD), 413 HCMD_NAME(LTR_CONFIG), 414 }; 415 416 /* Please keep this array *SORTED* by hex value. 417 * Access is done through binary search 418 */ 419 static const struct iwl_hcmd_names iwl_mvm_system_names[] = { 420 HCMD_NAME(SHARED_MEM_CFG_CMD), 421 HCMD_NAME(INIT_EXTENDED_CFG_CMD), 422 }; 423 424 /* Please keep this array *SORTED* by hex value. 425 * Access is done through binary search 426 */ 427 static const struct iwl_hcmd_names iwl_mvm_mac_conf_names[] = { 428 HCMD_NAME(CHANNEL_SWITCH_NOA_NOTIF), 429 }; 430 431 /* Please keep this array *SORTED* by hex value. 432 * Access is done through binary search 433 */ 434 static const struct iwl_hcmd_names iwl_mvm_phy_names[] = { 435 HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE), 436 HCMD_NAME(CTDP_CONFIG_CMD), 437 HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD), 438 HCMD_NAME(GEO_TX_POWER_LIMIT), 439 HCMD_NAME(CT_KILL_NOTIFICATION), 440 HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE), 441 }; 442 443 /* Please keep this array *SORTED* by hex value. 444 * Access is done through binary search 445 */ 446 static const struct iwl_hcmd_names iwl_mvm_data_path_names[] = { 447 HCMD_NAME(DQA_ENABLE_CMD), 448 HCMD_NAME(UPDATE_MU_GROUPS_CMD), 449 HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD), 450 HCMD_NAME(STA_HE_CTXT_CMD), 451 HCMD_NAME(RFH_QUEUE_CONFIG_CMD), 452 HCMD_NAME(STA_PM_NOTIF), 453 HCMD_NAME(MU_GROUP_MGMT_NOTIF), 454 HCMD_NAME(RX_QUEUES_NOTIFICATION), 455 }; 456 457 /* Please keep this array *SORTED* by hex value. 458 * Access is done through binary search 459 */ 460 static const struct iwl_hcmd_names iwl_mvm_debug_names[] = { 461 HCMD_NAME(MFU_ASSERT_DUMP_NTF), 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_prot_offload_names[] = { 468 HCMD_NAME(STORED_BEACON_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_regulatory_and_nvm_names[] = { 475 HCMD_NAME(NVM_ACCESS_COMPLETE), 476 HCMD_NAME(NVM_GET_INFO), 477 }; 478 479 static const struct iwl_hcmd_arr iwl_mvm_groups[] = { 480 [LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names), 481 [LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names), 482 [SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names), 483 [MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names), 484 [PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names), 485 [DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names), 486 [PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names), 487 [REGULATORY_AND_NVM_GROUP] = 488 HCMD_ARR(iwl_mvm_regulatory_and_nvm_names), 489 }; 490 491 /* this forward declaration can avoid to export the function */ 492 static void iwl_mvm_async_handlers_wk(struct work_struct *wk); 493 #ifdef CONFIG_PM 494 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk); 495 #endif 496 497 static u32 iwl_mvm_min_backoff(struct iwl_mvm *mvm) 498 { 499 const struct iwl_pwr_tx_backoff *backoff = mvm->cfg->pwr_tx_backoffs; 500 u64 dflt_pwr_limit; 501 502 if (!backoff) 503 return 0; 504 505 dflt_pwr_limit = iwl_acpi_get_pwr_limit(mvm->dev); 506 507 while (backoff->pwr) { 508 if (dflt_pwr_limit >= backoff->pwr) 509 return backoff->backoff; 510 511 backoff++; 512 } 513 514 return 0; 515 } 516 517 static void iwl_mvm_tx_unblock_dwork(struct work_struct *work) 518 { 519 struct iwl_mvm *mvm = 520 container_of(work, struct iwl_mvm, cs_tx_unblock_dwork.work); 521 struct ieee80211_vif *tx_blocked_vif; 522 struct iwl_mvm_vif *mvmvif; 523 524 mutex_lock(&mvm->mutex); 525 526 tx_blocked_vif = 527 rcu_dereference_protected(mvm->csa_tx_blocked_vif, 528 lockdep_is_held(&mvm->mutex)); 529 530 if (!tx_blocked_vif) 531 goto unlock; 532 533 mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif); 534 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false); 535 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); 536 unlock: 537 mutex_unlock(&mvm->mutex); 538 } 539 540 static int iwl_mvm_fwrt_dump_start(void *ctx) 541 { 542 struct iwl_mvm *mvm = ctx; 543 int ret; 544 545 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT); 546 if (ret) 547 return ret; 548 549 mutex_lock(&mvm->mutex); 550 551 return 0; 552 } 553 554 static void iwl_mvm_fwrt_dump_end(void *ctx) 555 { 556 struct iwl_mvm *mvm = ctx; 557 558 mutex_unlock(&mvm->mutex); 559 560 iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT); 561 } 562 563 static bool iwl_mvm_fwrt_fw_running(void *ctx) 564 { 565 return iwl_mvm_firmware_running(ctx); 566 } 567 568 static const struct iwl_fw_runtime_ops iwl_mvm_fwrt_ops = { 569 .dump_start = iwl_mvm_fwrt_dump_start, 570 .dump_end = iwl_mvm_fwrt_dump_end, 571 .fw_running = iwl_mvm_fwrt_fw_running, 572 }; 573 574 static struct iwl_op_mode * 575 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg, 576 const struct iwl_fw *fw, struct dentry *dbgfs_dir) 577 { 578 struct ieee80211_hw *hw; 579 struct iwl_op_mode *op_mode; 580 struct iwl_mvm *mvm; 581 struct iwl_trans_config trans_cfg = {}; 582 static const u8 no_reclaim_cmds[] = { 583 TX_CMD, 584 }; 585 int err, scan_size; 586 u32 min_backoff; 587 enum iwl_amsdu_size rb_size_default; 588 589 /* 590 * We use IWL_MVM_STATION_COUNT to check the validity of the station 591 * index all over the driver - check that its value corresponds to the 592 * array size. 593 */ 594 BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT); 595 596 /******************************** 597 * 1. Allocating and configuring HW data 598 ********************************/ 599 hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) + 600 sizeof(struct iwl_mvm), 601 &iwl_mvm_hw_ops); 602 if (!hw) 603 return NULL; 604 605 if (cfg->max_rx_agg_size) 606 hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size; 607 608 if (cfg->max_tx_agg_size) 609 hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size; 610 611 op_mode = hw->priv; 612 613 mvm = IWL_OP_MODE_GET_MVM(op_mode); 614 mvm->dev = trans->dev; 615 mvm->trans = trans; 616 mvm->cfg = cfg; 617 mvm->fw = fw; 618 mvm->hw = hw; 619 620 iwl_fw_runtime_init(&mvm->fwrt, trans, fw, &iwl_mvm_fwrt_ops, mvm, 621 dbgfs_dir); 622 623 mvm->init_status = 0; 624 625 if (iwl_mvm_has_new_rx_api(mvm)) { 626 op_mode->ops = &iwl_mvm_ops_mq; 627 trans->rx_mpdu_cmd_hdr_size = 628 (trans->cfg->device_family >= 629 IWL_DEVICE_FAMILY_22560) ? 630 sizeof(struct iwl_rx_mpdu_desc) : 631 IWL_RX_DESC_SIZE_V1; 632 } else { 633 op_mode->ops = &iwl_mvm_ops; 634 trans->rx_mpdu_cmd_hdr_size = 635 sizeof(struct iwl_rx_mpdu_res_start); 636 637 if (WARN_ON(trans->num_rx_queues > 1)) 638 goto out_free; 639 } 640 641 mvm->fw_restart = iwlwifi_mod_params.fw_restart ? -1 : 0; 642 643 mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE; 644 mvm->snif_queue = IWL_MVM_DQA_INJECT_MONITOR_QUEUE; 645 mvm->probe_queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE; 646 mvm->p2p_dev_queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE; 647 648 mvm->sf_state = SF_UNINIT; 649 if (iwl_mvm_has_unified_ucode(mvm)) 650 iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_REGULAR); 651 else 652 iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_INIT); 653 mvm->drop_bcn_ap_mode = true; 654 655 mutex_init(&mvm->mutex); 656 mutex_init(&mvm->d0i3_suspend_mutex); 657 spin_lock_init(&mvm->async_handlers_lock); 658 INIT_LIST_HEAD(&mvm->time_event_list); 659 INIT_LIST_HEAD(&mvm->aux_roc_te_list); 660 INIT_LIST_HEAD(&mvm->async_handlers_list); 661 spin_lock_init(&mvm->time_event_lock); 662 spin_lock_init(&mvm->queue_info_lock); 663 664 INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk); 665 INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk); 666 #ifdef CONFIG_PM 667 INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work); 668 #endif 669 INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work); 670 INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk); 671 INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk); 672 673 spin_lock_init(&mvm->d0i3_tx_lock); 674 spin_lock_init(&mvm->refs_lock); 675 skb_queue_head_init(&mvm->d0i3_tx); 676 init_waitqueue_head(&mvm->d0i3_exit_waitq); 677 init_waitqueue_head(&mvm->rx_sync_waitq); 678 679 atomic_set(&mvm->queue_sync_counter, 0); 680 681 SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev); 682 683 spin_lock_init(&mvm->tcm.lock); 684 INIT_DELAYED_WORK(&mvm->tcm.work, iwl_mvm_tcm_work); 685 mvm->tcm.ts = jiffies; 686 mvm->tcm.ll_ts = jiffies; 687 mvm->tcm.uapsd_nonagg_ts = jiffies; 688 689 INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork); 690 691 /* 692 * Populate the state variables that the transport layer needs 693 * to know about. 694 */ 695 trans_cfg.op_mode = op_mode; 696 trans_cfg.no_reclaim_cmds = no_reclaim_cmds; 697 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds); 698 699 if (mvm->trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560) 700 rb_size_default = IWL_AMSDU_2K; 701 else 702 rb_size_default = IWL_AMSDU_4K; 703 704 switch (iwlwifi_mod_params.amsdu_size) { 705 case IWL_AMSDU_DEF: 706 trans_cfg.rx_buf_size = rb_size_default; 707 break; 708 case IWL_AMSDU_4K: 709 trans_cfg.rx_buf_size = IWL_AMSDU_4K; 710 break; 711 case IWL_AMSDU_8K: 712 trans_cfg.rx_buf_size = IWL_AMSDU_8K; 713 break; 714 case IWL_AMSDU_12K: 715 trans_cfg.rx_buf_size = IWL_AMSDU_12K; 716 break; 717 default: 718 pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME, 719 iwlwifi_mod_params.amsdu_size); 720 trans_cfg.rx_buf_size = rb_size_default; 721 } 722 723 trans->wide_cmd_header = true; 724 trans_cfg.bc_table_dword = 725 mvm->trans->cfg->device_family < IWL_DEVICE_FAMILY_22560; 726 727 trans_cfg.command_groups = iwl_mvm_groups; 728 trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups); 729 730 trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE; 731 trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD; 732 trans_cfg.scd_set_active = true; 733 734 trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info, 735 driver_data[2]); 736 737 trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD; 738 739 /* Set a short watchdog for the command queue */ 740 trans_cfg.cmd_q_wdg_timeout = 741 iwl_mvm_get_wd_timeout(mvm, NULL, false, true); 742 743 snprintf(mvm->hw->wiphy->fw_version, 744 sizeof(mvm->hw->wiphy->fw_version), 745 "%s", fw->fw_version); 746 747 /* Configure transport layer */ 748 iwl_trans_configure(mvm->trans, &trans_cfg); 749 750 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD; 751 trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv; 752 trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num; 753 memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv, 754 sizeof(trans->dbg_conf_tlv)); 755 trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv; 756 trans->dbg_dump_mask = mvm->fw->dbg_dump_mask; 757 758 trans->iml = mvm->fw->iml; 759 trans->iml_len = mvm->fw->iml_len; 760 761 /* set up notification wait support */ 762 iwl_notification_wait_init(&mvm->notif_wait); 763 764 /* Init phy db */ 765 mvm->phy_db = iwl_phy_db_init(trans); 766 if (!mvm->phy_db) { 767 IWL_ERR(mvm, "Cannot init phy_db\n"); 768 goto out_free; 769 } 770 771 IWL_INFO(mvm, "Detected %s, REV=0x%X\n", 772 mvm->cfg->name, mvm->trans->hw_rev); 773 774 if (iwlwifi_mod_params.nvm_file) 775 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file; 776 else 777 IWL_DEBUG_EEPROM(mvm->trans->dev, 778 "working without external nvm file\n"); 779 780 err = iwl_trans_start_hw(mvm->trans); 781 if (err) 782 goto out_free; 783 784 mutex_lock(&mvm->mutex); 785 iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE); 786 err = iwl_run_init_mvm_ucode(mvm, true); 787 if (!iwlmvm_mod_params.init_dbg || !err) 788 iwl_mvm_stop_device(mvm); 789 iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE); 790 mutex_unlock(&mvm->mutex); 791 if (err < 0) { 792 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err); 793 goto out_free; 794 } 795 796 scan_size = iwl_mvm_scan_size(mvm); 797 798 mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL); 799 if (!mvm->scan_cmd) 800 goto out_free; 801 802 /* Set EBS as successful as long as not stated otherwise by the FW. */ 803 mvm->last_ebs_successful = true; 804 805 err = iwl_mvm_mac_setup_register(mvm); 806 if (err) 807 goto out_free; 808 mvm->hw_registered = true; 809 810 min_backoff = iwl_mvm_min_backoff(mvm); 811 iwl_mvm_thermal_initialize(mvm, min_backoff); 812 813 err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir); 814 if (err) 815 goto out_unregister; 816 817 if (!iwl_mvm_has_new_rx_stats_api(mvm)) 818 memset(&mvm->rx_stats_v3, 0, 819 sizeof(struct mvm_statistics_rx_v3)); 820 else 821 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx)); 822 823 /* The transport always starts with a taken reference, we can 824 * release it now if d0i3 is supported */ 825 if (iwl_mvm_is_d0i3_supported(mvm)) 826 iwl_trans_unref(mvm->trans); 827 828 iwl_mvm_tof_init(mvm); 829 830 return op_mode; 831 832 out_unregister: 833 if (iwlmvm_mod_params.init_dbg) 834 return op_mode; 835 836 ieee80211_unregister_hw(mvm->hw); 837 mvm->hw_registered = false; 838 iwl_mvm_leds_exit(mvm); 839 iwl_mvm_thermal_exit(mvm); 840 out_free: 841 iwl_fw_flush_dump(&mvm->fwrt); 842 843 if (iwlmvm_mod_params.init_dbg) 844 return op_mode; 845 iwl_phy_db_free(mvm->phy_db); 846 kfree(mvm->scan_cmd); 847 iwl_trans_op_mode_leave(trans); 848 849 ieee80211_free_hw(mvm->hw); 850 return NULL; 851 } 852 853 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode) 854 { 855 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 856 int i; 857 858 /* If d0i3 is supported, we have released the reference that 859 * the transport started with, so we should take it back now 860 * that we are leaving. 861 */ 862 if (iwl_mvm_is_d0i3_supported(mvm)) 863 iwl_trans_ref(mvm->trans); 864 865 iwl_mvm_leds_exit(mvm); 866 867 iwl_mvm_thermal_exit(mvm); 868 869 if (mvm->init_status & IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE) { 870 ieee80211_unregister_hw(mvm->hw); 871 mvm->init_status &= ~IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE; 872 } 873 874 kfree(mvm->scan_cmd); 875 kfree(mvm->mcast_filter_cmd); 876 mvm->mcast_filter_cmd = NULL; 877 878 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS) 879 kfree(mvm->d3_resume_sram); 880 #endif 881 iwl_trans_op_mode_leave(mvm->trans); 882 883 iwl_phy_db_free(mvm->phy_db); 884 mvm->phy_db = NULL; 885 886 kfree(mvm->nvm_data); 887 for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++) 888 kfree(mvm->nvm_sections[i].data); 889 890 cancel_delayed_work_sync(&mvm->tcm.work); 891 892 iwl_mvm_tof_clean(mvm); 893 894 mutex_destroy(&mvm->mutex); 895 mutex_destroy(&mvm->d0i3_suspend_mutex); 896 897 ieee80211_free_hw(mvm->hw); 898 } 899 900 struct iwl_async_handler_entry { 901 struct list_head list; 902 struct iwl_rx_cmd_buffer rxb; 903 enum iwl_rx_handler_context context; 904 void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb); 905 }; 906 907 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm) 908 { 909 struct iwl_async_handler_entry *entry, *tmp; 910 911 spin_lock_bh(&mvm->async_handlers_lock); 912 list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) { 913 iwl_free_rxb(&entry->rxb); 914 list_del(&entry->list); 915 kfree(entry); 916 } 917 spin_unlock_bh(&mvm->async_handlers_lock); 918 } 919 920 static void iwl_mvm_async_handlers_wk(struct work_struct *wk) 921 { 922 struct iwl_mvm *mvm = 923 container_of(wk, struct iwl_mvm, async_handlers_wk); 924 struct iwl_async_handler_entry *entry, *tmp; 925 LIST_HEAD(local_list); 926 927 /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */ 928 929 /* 930 * Sync with Rx path with a lock. Remove all the entries from this list, 931 * add them to a local one (lock free), and then handle them. 932 */ 933 spin_lock_bh(&mvm->async_handlers_lock); 934 list_splice_init(&mvm->async_handlers_list, &local_list); 935 spin_unlock_bh(&mvm->async_handlers_lock); 936 937 list_for_each_entry_safe(entry, tmp, &local_list, list) { 938 if (entry->context == RX_HANDLER_ASYNC_LOCKED) 939 mutex_lock(&mvm->mutex); 940 entry->fn(mvm, &entry->rxb); 941 iwl_free_rxb(&entry->rxb); 942 list_del(&entry->list); 943 if (entry->context == RX_HANDLER_ASYNC_LOCKED) 944 mutex_unlock(&mvm->mutex); 945 kfree(entry); 946 } 947 } 948 949 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm, 950 struct iwl_rx_packet *pkt) 951 { 952 struct iwl_fw_dbg_trigger_tlv *trig; 953 struct iwl_fw_dbg_trigger_cmd *cmds_trig; 954 int i; 955 956 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF)) 957 return; 958 959 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF); 960 cmds_trig = (void *)trig->data; 961 962 if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt, NULL, trig)) 963 return; 964 965 for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) { 966 /* don't collect on CMD 0 */ 967 if (!cmds_trig->cmds[i].cmd_id) 968 break; 969 970 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd || 971 cmds_trig->cmds[i].group_id != pkt->hdr.group_id) 972 continue; 973 974 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 975 "CMD 0x%02x.%02x received", 976 pkt->hdr.group_id, pkt->hdr.cmd); 977 break; 978 } 979 } 980 981 static void iwl_mvm_rx_common(struct iwl_mvm *mvm, 982 struct iwl_rx_cmd_buffer *rxb, 983 struct iwl_rx_packet *pkt) 984 { 985 int i; 986 987 iwl_mvm_rx_check_trigger(mvm, pkt); 988 989 /* 990 * Do the notification wait before RX handlers so 991 * even if the RX handler consumes the RXB we have 992 * access to it in the notification wait entry. 993 */ 994 iwl_notification_wait_notify(&mvm->notif_wait, pkt); 995 996 for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) { 997 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i]; 998 struct iwl_async_handler_entry *entry; 999 1000 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) 1001 continue; 1002 1003 if (rx_h->context == RX_HANDLER_SYNC) { 1004 rx_h->fn(mvm, rxb); 1005 return; 1006 } 1007 1008 entry = kzalloc(sizeof(*entry), GFP_ATOMIC); 1009 /* we can't do much... */ 1010 if (!entry) 1011 return; 1012 1013 entry->rxb._page = rxb_steal_page(rxb); 1014 entry->rxb._offset = rxb->_offset; 1015 entry->rxb._rx_page_order = rxb->_rx_page_order; 1016 entry->fn = rx_h->fn; 1017 entry->context = rx_h->context; 1018 spin_lock(&mvm->async_handlers_lock); 1019 list_add_tail(&entry->list, &mvm->async_handlers_list); 1020 spin_unlock(&mvm->async_handlers_lock); 1021 schedule_work(&mvm->async_handlers_wk); 1022 break; 1023 } 1024 } 1025 1026 static void iwl_mvm_rx(struct iwl_op_mode *op_mode, 1027 struct napi_struct *napi, 1028 struct iwl_rx_cmd_buffer *rxb) 1029 { 1030 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1031 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1032 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); 1033 1034 if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))) 1035 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb); 1036 else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD)) 1037 iwl_mvm_rx_rx_phy_cmd(mvm, rxb); 1038 else 1039 iwl_mvm_rx_common(mvm, rxb, pkt); 1040 } 1041 1042 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode, 1043 struct napi_struct *napi, 1044 struct iwl_rx_cmd_buffer *rxb) 1045 { 1046 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1047 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1048 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); 1049 1050 if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))) 1051 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0); 1052 else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP, 1053 RX_QUEUES_NOTIFICATION))) 1054 iwl_mvm_rx_queue_notif(mvm, rxb, 0); 1055 else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)) 1056 iwl_mvm_rx_frame_release(mvm, napi, rxb, 0); 1057 else 1058 iwl_mvm_rx_common(mvm, rxb, pkt); 1059 } 1060 1061 void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq) 1062 { 1063 int q; 1064 1065 if (WARN_ON_ONCE(!mq)) 1066 return; 1067 1068 for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) { 1069 if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) { 1070 IWL_DEBUG_TX_QUEUES(mvm, 1071 "mac80211 %d already stopped\n", q); 1072 continue; 1073 } 1074 1075 ieee80211_stop_queue(mvm->hw, q); 1076 } 1077 } 1078 1079 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode, 1080 const struct iwl_device_cmd *cmd) 1081 { 1082 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1083 1084 /* 1085 * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA 1086 * commands that need to block the Tx queues. 1087 */ 1088 iwl_trans_block_txq_ptrs(mvm->trans, false); 1089 } 1090 1091 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue) 1092 { 1093 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1094 unsigned long mq; 1095 1096 spin_lock_bh(&mvm->queue_info_lock); 1097 mq = mvm->hw_queue_to_mac80211[hw_queue]; 1098 spin_unlock_bh(&mvm->queue_info_lock); 1099 1100 iwl_mvm_stop_mac_queues(mvm, mq); 1101 } 1102 1103 void iwl_mvm_start_mac_queues(struct iwl_mvm *mvm, unsigned long mq) 1104 { 1105 int q; 1106 1107 if (WARN_ON_ONCE(!mq)) 1108 return; 1109 1110 for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) { 1111 if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) { 1112 IWL_DEBUG_TX_QUEUES(mvm, 1113 "mac80211 %d still stopped\n", q); 1114 continue; 1115 } 1116 1117 ieee80211_wake_queue(mvm->hw, q); 1118 } 1119 } 1120 1121 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue) 1122 { 1123 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1124 unsigned long mq; 1125 1126 spin_lock_bh(&mvm->queue_info_lock); 1127 mq = mvm->hw_queue_to_mac80211[hw_queue]; 1128 spin_unlock_bh(&mvm->queue_info_lock); 1129 1130 iwl_mvm_start_mac_queues(mvm, mq); 1131 } 1132 1133 static void iwl_mvm_set_rfkill_state(struct iwl_mvm *mvm) 1134 { 1135 bool state = iwl_mvm_is_radio_killed(mvm); 1136 1137 if (state) 1138 wake_up(&mvm->rx_sync_waitq); 1139 1140 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, state); 1141 } 1142 1143 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state) 1144 { 1145 if (state) 1146 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); 1147 else 1148 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); 1149 1150 iwl_mvm_set_rfkill_state(mvm); 1151 } 1152 1153 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state) 1154 { 1155 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1156 bool calibrating = READ_ONCE(mvm->calibrating); 1157 1158 if (state) 1159 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); 1160 else 1161 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); 1162 1163 iwl_mvm_set_rfkill_state(mvm); 1164 1165 /* iwl_run_init_mvm_ucode is waiting for results, abort it */ 1166 if (calibrating) 1167 iwl_abort_notification_waits(&mvm->notif_wait); 1168 1169 /* 1170 * Stop the device if we run OPERATIONAL firmware or if we are in the 1171 * middle of the calibrations. 1172 */ 1173 return state && (mvm->fwrt.cur_fw_img != IWL_UCODE_INIT || calibrating); 1174 } 1175 1176 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb) 1177 { 1178 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1179 struct ieee80211_tx_info *info; 1180 1181 info = IEEE80211_SKB_CB(skb); 1182 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]); 1183 ieee80211_free_txskb(mvm->hw, skb); 1184 } 1185 1186 struct iwl_mvm_reprobe { 1187 struct device *dev; 1188 struct work_struct work; 1189 }; 1190 1191 static void iwl_mvm_reprobe_wk(struct work_struct *wk) 1192 { 1193 struct iwl_mvm_reprobe *reprobe; 1194 1195 reprobe = container_of(wk, struct iwl_mvm_reprobe, work); 1196 if (device_reprobe(reprobe->dev)) 1197 dev_err(reprobe->dev, "reprobe failed!\n"); 1198 kfree(reprobe); 1199 module_put(THIS_MODULE); 1200 } 1201 1202 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error) 1203 { 1204 iwl_abort_notification_waits(&mvm->notif_wait); 1205 1206 /* 1207 * This is a bit racy, but worst case we tell mac80211 about 1208 * a stopped/aborted scan when that was already done which 1209 * is not a problem. It is necessary to abort any os scan 1210 * here because mac80211 requires having the scan cleared 1211 * before restarting. 1212 * We'll reset the scan_status to NONE in restart cleanup in 1213 * the next start() call from mac80211. If restart isn't called 1214 * (no fw restart) scan status will stay busy. 1215 */ 1216 iwl_mvm_report_scan_aborted(mvm); 1217 1218 /* 1219 * If we're restarting already, don't cycle restarts. 1220 * If INIT fw asserted, it will likely fail again. 1221 * If WoWLAN fw asserted, don't restart either, mac80211 1222 * can't recover this since we're already half suspended. 1223 */ 1224 if (!mvm->fw_restart && fw_error) { 1225 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert, 1226 NULL); 1227 } else if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1228 struct iwl_mvm_reprobe *reprobe; 1229 1230 IWL_ERR(mvm, 1231 "Firmware error during reconfiguration - reprobe!\n"); 1232 1233 /* 1234 * get a module reference to avoid doing this while unloading 1235 * anyway and to avoid scheduling a work with code that's 1236 * being removed. 1237 */ 1238 if (!try_module_get(THIS_MODULE)) { 1239 IWL_ERR(mvm, "Module is being unloaded - abort\n"); 1240 return; 1241 } 1242 1243 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC); 1244 if (!reprobe) { 1245 module_put(THIS_MODULE); 1246 return; 1247 } 1248 reprobe->dev = mvm->trans->dev; 1249 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk); 1250 schedule_work(&reprobe->work); 1251 } else if (mvm->fwrt.cur_fw_img == IWL_UCODE_REGULAR && 1252 mvm->hw_registered && 1253 !test_bit(STATUS_TRANS_DEAD, &mvm->trans->status)) { 1254 /* don't let the transport/FW power down */ 1255 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); 1256 1257 if (fw_error && mvm->fw_restart > 0) 1258 mvm->fw_restart--; 1259 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); 1260 ieee80211_restart_hw(mvm->hw); 1261 } 1262 } 1263 1264 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode) 1265 { 1266 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1267 1268 if (!test_bit(STATUS_TRANS_DEAD, &mvm->trans->status)) 1269 iwl_mvm_dump_nic_error_log(mvm); 1270 1271 iwl_mvm_nic_restart(mvm, true); 1272 } 1273 1274 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode) 1275 { 1276 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1277 1278 WARN_ON(1); 1279 iwl_mvm_nic_restart(mvm, true); 1280 } 1281 1282 #ifdef CONFIG_PM 1283 struct iwl_d0i3_iter_data { 1284 struct iwl_mvm *mvm; 1285 struct ieee80211_vif *connected_vif; 1286 u8 ap_sta_id; 1287 u8 vif_count; 1288 u8 offloading_tid; 1289 bool disable_offloading; 1290 }; 1291 1292 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm, 1293 struct ieee80211_vif *vif, 1294 struct iwl_d0i3_iter_data *iter_data) 1295 { 1296 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1297 struct iwl_mvm_sta *mvmsta; 1298 u32 available_tids = 0; 1299 u8 tid; 1300 1301 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION || 1302 mvmvif->ap_sta_id == IWL_MVM_INVALID_STA)) 1303 return false; 1304 1305 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); 1306 if (!mvmsta) 1307 return false; 1308 1309 spin_lock_bh(&mvmsta->lock); 1310 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1311 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 1312 1313 /* 1314 * in case of pending tx packets, don't use this tid 1315 * for offloading in order to prevent reuse of the same 1316 * qos seq counters. 1317 */ 1318 if (iwl_mvm_tid_queued(mvm, tid_data)) 1319 continue; 1320 1321 if (tid_data->state != IWL_AGG_OFF) 1322 continue; 1323 1324 available_tids |= BIT(tid); 1325 } 1326 spin_unlock_bh(&mvmsta->lock); 1327 1328 /* 1329 * disallow protocol offloading if we have no available tid 1330 * (with no pending frames and no active aggregation, 1331 * as we don't handle "holes" properly - the scheduler needs the 1332 * frame's seq number and TFD index to match) 1333 */ 1334 if (!available_tids) 1335 return true; 1336 1337 /* for simplicity, just use the first available tid */ 1338 iter_data->offloading_tid = ffs(available_tids) - 1; 1339 return false; 1340 } 1341 1342 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac, 1343 struct ieee80211_vif *vif) 1344 { 1345 struct iwl_d0i3_iter_data *data = _data; 1346 struct iwl_mvm *mvm = data->mvm; 1347 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1348 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; 1349 1350 IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr); 1351 if (vif->type != NL80211_IFTYPE_STATION || 1352 !vif->bss_conf.assoc) 1353 return; 1354 1355 /* 1356 * in case of pending tx packets or active aggregations, 1357 * avoid offloading features in order to prevent reuse of 1358 * the same qos seq counters. 1359 */ 1360 if (iwl_mvm_disallow_offloading(mvm, vif, data)) 1361 data->disable_offloading = true; 1362 1363 iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags); 1364 iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading, 1365 false, flags); 1366 1367 /* 1368 * on init/association, mvm already configures POWER_TABLE_CMD 1369 * and REPLY_MCAST_FILTER_CMD, so currently don't 1370 * reconfigure them (we might want to use different 1371 * params later on, though). 1372 */ 1373 data->ap_sta_id = mvmvif->ap_sta_id; 1374 data->vif_count++; 1375 1376 /* 1377 * no new commands can be sent at this stage, so it's safe 1378 * to save the vif pointer during d0i3 entrance. 1379 */ 1380 data->connected_vif = vif; 1381 } 1382 1383 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm, 1384 struct iwl_wowlan_config_cmd *cmd, 1385 struct iwl_d0i3_iter_data *iter_data) 1386 { 1387 struct ieee80211_sta *ap_sta; 1388 struct iwl_mvm_sta *mvm_ap_sta; 1389 1390 if (iter_data->ap_sta_id == IWL_MVM_INVALID_STA) 1391 return; 1392 1393 rcu_read_lock(); 1394 1395 ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]); 1396 if (IS_ERR_OR_NULL(ap_sta)) 1397 goto out; 1398 1399 mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta); 1400 cmd->is_11n_connection = ap_sta->ht_cap.ht_supported; 1401 cmd->offloading_tid = iter_data->offloading_tid; 1402 cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING | 1403 ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON; 1404 /* 1405 * The d0i3 uCode takes care of the nonqos counters, 1406 * so configure only the qos seq ones. 1407 */ 1408 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd); 1409 out: 1410 rcu_read_unlock(); 1411 } 1412 1413 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode) 1414 { 1415 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1416 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; 1417 int ret; 1418 struct iwl_d0i3_iter_data d0i3_iter_data = { 1419 .mvm = mvm, 1420 }; 1421 struct iwl_wowlan_config_cmd wowlan_config_cmd = { 1422 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME | 1423 IWL_WOWLAN_WAKEUP_BEACON_MISS | 1424 IWL_WOWLAN_WAKEUP_LINK_CHANGE), 1425 }; 1426 struct iwl_d3_manager_config d3_cfg_cmd = { 1427 .min_sleep_time = cpu_to_le32(1000), 1428 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR), 1429 }; 1430 1431 IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n"); 1432 1433 if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR)) 1434 return -EINVAL; 1435 1436 set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1437 1438 /* 1439 * iwl_mvm_ref_sync takes a reference before checking the flag. 1440 * so by checking there is no held reference we prevent a state 1441 * in which iwl_mvm_ref_sync continues successfully while we 1442 * configure the firmware to enter d0i3 1443 */ 1444 if (iwl_mvm_ref_taken(mvm)) { 1445 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n"); 1446 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1447 wake_up(&mvm->d0i3_exit_waitq); 1448 return 1; 1449 } 1450 1451 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1452 IEEE80211_IFACE_ITER_NORMAL, 1453 iwl_mvm_enter_d0i3_iterator, 1454 &d0i3_iter_data); 1455 if (d0i3_iter_data.vif_count == 1) { 1456 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id; 1457 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading; 1458 } else { 1459 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1); 1460 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA; 1461 mvm->d0i3_offloading = false; 1462 } 1463 1464 iwl_mvm_pause_tcm(mvm, true); 1465 /* make sure we have no running tx while configuring the seqno */ 1466 synchronize_net(); 1467 1468 /* Flush the hw queues, in case something got queued during entry */ 1469 /* TODO new tx api */ 1470 if (iwl_mvm_has_new_tx_api(mvm)) { 1471 WARN_ONCE(1, "d0i3: Need to implement flush TX queue\n"); 1472 } else { 1473 ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm), 1474 flags); 1475 if (ret) 1476 return ret; 1477 } 1478 1479 /* configure wowlan configuration only if needed */ 1480 if (mvm->d0i3_ap_sta_id != IWL_MVM_INVALID_STA) { 1481 /* wake on beacons only if beacon storing isn't supported */ 1482 if (!fw_has_capa(&mvm->fw->ucode_capa, 1483 IWL_UCODE_TLV_CAPA_BEACON_STORING)) 1484 wowlan_config_cmd.wakeup_filter |= 1485 cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING); 1486 1487 iwl_mvm_wowlan_config_key_params(mvm, 1488 d0i3_iter_data.connected_vif, 1489 true, flags); 1490 1491 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd, 1492 &d0i3_iter_data); 1493 1494 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags, 1495 sizeof(wowlan_config_cmd), 1496 &wowlan_config_cmd); 1497 if (ret) 1498 return ret; 1499 } 1500 1501 return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD, 1502 flags | CMD_MAKE_TRANS_IDLE, 1503 sizeof(d3_cfg_cmd), &d3_cfg_cmd); 1504 } 1505 1506 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac, 1507 struct ieee80211_vif *vif) 1508 { 1509 struct iwl_mvm *mvm = _data; 1510 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO; 1511 1512 IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr); 1513 if (vif->type != NL80211_IFTYPE_STATION || 1514 !vif->bss_conf.assoc) 1515 return; 1516 1517 iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags); 1518 } 1519 1520 struct iwl_mvm_d0i3_exit_work_iter_data { 1521 struct iwl_mvm *mvm; 1522 struct iwl_wowlan_status *status; 1523 u32 wakeup_reasons; 1524 }; 1525 1526 static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac, 1527 struct ieee80211_vif *vif) 1528 { 1529 struct iwl_mvm_d0i3_exit_work_iter_data *data = _data; 1530 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1531 u32 reasons = data->wakeup_reasons; 1532 1533 /* consider only the relevant station interface */ 1534 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc || 1535 data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id) 1536 return; 1537 1538 if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH) 1539 iwl_mvm_connection_loss(data->mvm, vif, "D0i3"); 1540 else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON) 1541 ieee80211_beacon_loss(vif); 1542 else 1543 iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status); 1544 } 1545 1546 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq) 1547 { 1548 struct ieee80211_sta *sta = NULL; 1549 struct iwl_mvm_sta *mvm_ap_sta; 1550 int i; 1551 bool wake_queues = false; 1552 1553 lockdep_assert_held(&mvm->mutex); 1554 1555 spin_lock_bh(&mvm->d0i3_tx_lock); 1556 1557 if (mvm->d0i3_ap_sta_id == IWL_MVM_INVALID_STA) 1558 goto out; 1559 1560 IWL_DEBUG_RPM(mvm, "re-enqueue packets\n"); 1561 1562 /* get the sta in order to update seq numbers and re-enqueue skbs */ 1563 sta = rcu_dereference_protected( 1564 mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id], 1565 lockdep_is_held(&mvm->mutex)); 1566 1567 if (IS_ERR_OR_NULL(sta)) { 1568 sta = NULL; 1569 goto out; 1570 } 1571 1572 if (mvm->d0i3_offloading && qos_seq) { 1573 /* update qos seq numbers if offloading was enabled */ 1574 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta); 1575 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1576 u16 seq = le16_to_cpu(qos_seq[i]); 1577 /* firmware stores last-used one, we store next one */ 1578 seq += 0x10; 1579 mvm_ap_sta->tid_data[i].seq_number = seq; 1580 } 1581 } 1582 out: 1583 /* re-enqueue (or drop) all packets */ 1584 while (!skb_queue_empty(&mvm->d0i3_tx)) { 1585 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx); 1586 1587 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta)) 1588 ieee80211_free_txskb(mvm->hw, skb); 1589 1590 /* if the skb_queue is not empty, we need to wake queues */ 1591 wake_queues = true; 1592 } 1593 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1594 wake_up(&mvm->d0i3_exit_waitq); 1595 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA; 1596 if (wake_queues) 1597 ieee80211_wake_queues(mvm->hw); 1598 1599 spin_unlock_bh(&mvm->d0i3_tx_lock); 1600 } 1601 1602 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk) 1603 { 1604 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work); 1605 struct iwl_mvm_d0i3_exit_work_iter_data iter_data = { 1606 .mvm = mvm, 1607 }; 1608 1609 struct iwl_wowlan_status *status; 1610 u32 wakeup_reasons = 0; 1611 __le16 *qos_seq = NULL; 1612 1613 mutex_lock(&mvm->mutex); 1614 1615 status = iwl_mvm_send_wowlan_get_status(mvm); 1616 if (IS_ERR_OR_NULL(status)) { 1617 /* set to NULL so we don't need to check before kfree'ing */ 1618 status = NULL; 1619 goto out; 1620 } 1621 1622 wakeup_reasons = le32_to_cpu(status->wakeup_reasons); 1623 qos_seq = status->qos_seq_ctr; 1624 1625 IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons); 1626 1627 iter_data.wakeup_reasons = wakeup_reasons; 1628 iter_data.status = status; 1629 ieee80211_iterate_active_interfaces(mvm->hw, 1630 IEEE80211_IFACE_ITER_NORMAL, 1631 iwl_mvm_d0i3_exit_work_iter, 1632 &iter_data); 1633 out: 1634 iwl_mvm_d0i3_enable_tx(mvm, qos_seq); 1635 1636 IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n", 1637 wakeup_reasons); 1638 1639 /* qos_seq might point inside resp_pkt, so free it only now */ 1640 kfree(status); 1641 1642 /* the FW might have updated the regdomain */ 1643 iwl_mvm_update_changed_regdom(mvm); 1644 1645 iwl_mvm_resume_tcm(mvm); 1646 iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK); 1647 mutex_unlock(&mvm->mutex); 1648 } 1649 1650 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm) 1651 { 1652 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE | 1653 CMD_WAKE_UP_TRANS; 1654 int ret; 1655 1656 IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n"); 1657 1658 if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR)) 1659 return -EINVAL; 1660 1661 mutex_lock(&mvm->d0i3_suspend_mutex); 1662 if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) { 1663 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n"); 1664 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags); 1665 mutex_unlock(&mvm->d0i3_suspend_mutex); 1666 return 0; 1667 } 1668 mutex_unlock(&mvm->d0i3_suspend_mutex); 1669 1670 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL); 1671 if (ret) 1672 goto out; 1673 1674 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1675 IEEE80211_IFACE_ITER_NORMAL, 1676 iwl_mvm_exit_d0i3_iterator, 1677 mvm); 1678 out: 1679 schedule_work(&mvm->d0i3_exit_work); 1680 return ret; 1681 } 1682 1683 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode) 1684 { 1685 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1686 1687 iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK); 1688 return _iwl_mvm_exit_d0i3(mvm); 1689 } 1690 1691 #define IWL_MVM_D0I3_OPS \ 1692 .enter_d0i3 = iwl_mvm_enter_d0i3, \ 1693 .exit_d0i3 = iwl_mvm_exit_d0i3, 1694 #else /* CONFIG_PM */ 1695 #define IWL_MVM_D0I3_OPS 1696 #endif /* CONFIG_PM */ 1697 1698 #define IWL_MVM_COMMON_OPS \ 1699 /* these could be differentiated */ \ 1700 .async_cb = iwl_mvm_async_cb, \ 1701 .queue_full = iwl_mvm_stop_sw_queue, \ 1702 .queue_not_full = iwl_mvm_wake_sw_queue, \ 1703 .hw_rf_kill = iwl_mvm_set_hw_rfkill_state, \ 1704 .free_skb = iwl_mvm_free_skb, \ 1705 .nic_error = iwl_mvm_nic_error, \ 1706 .cmd_queue_full = iwl_mvm_cmd_queue_full, \ 1707 .nic_config = iwl_mvm_nic_config, \ 1708 IWL_MVM_D0I3_OPS \ 1709 /* as we only register one, these MUST be common! */ \ 1710 .start = iwl_op_mode_mvm_start, \ 1711 .stop = iwl_op_mode_mvm_stop 1712 1713 static const struct iwl_op_mode_ops iwl_mvm_ops = { 1714 IWL_MVM_COMMON_OPS, 1715 .rx = iwl_mvm_rx, 1716 }; 1717 1718 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode, 1719 struct napi_struct *napi, 1720 struct iwl_rx_cmd_buffer *rxb, 1721 unsigned int queue) 1722 { 1723 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1724 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1725 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); 1726 1727 if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))) 1728 iwl_mvm_rx_frame_release(mvm, napi, rxb, queue); 1729 else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP, 1730 RX_QUEUES_NOTIFICATION))) 1731 iwl_mvm_rx_queue_notif(mvm, rxb, queue); 1732 else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))) 1733 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue); 1734 } 1735 1736 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = { 1737 IWL_MVM_COMMON_OPS, 1738 .rx = iwl_mvm_rx_mq, 1739 .rx_rss = iwl_mvm_rx_mq_rss, 1740 }; 1741