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_GRP(DEBUG_GROUP, MFU_ASSERT_DUMP_NTF, 305 iwl_mvm_mfu_assert_dump_notif, RX_HANDLER_SYNC), 306 RX_HANDLER_GRP(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF, 307 iwl_mvm_rx_stored_beacon_notif, RX_HANDLER_SYNC), 308 RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF, 309 iwl_mvm_mu_mimo_grp_notif, RX_HANDLER_SYNC), 310 RX_HANDLER_GRP(DATA_PATH_GROUP, STA_PM_NOTIF, 311 iwl_mvm_sta_pm_notif, RX_HANDLER_SYNC), 312 }; 313 #undef RX_HANDLER 314 #undef RX_HANDLER_GRP 315 316 /* Please keep this array *SORTED* by hex value. 317 * Access is done through binary search 318 */ 319 static const struct iwl_hcmd_names iwl_mvm_legacy_names[] = { 320 HCMD_NAME(MVM_ALIVE), 321 HCMD_NAME(REPLY_ERROR), 322 HCMD_NAME(ECHO_CMD), 323 HCMD_NAME(INIT_COMPLETE_NOTIF), 324 HCMD_NAME(PHY_CONTEXT_CMD), 325 HCMD_NAME(DBG_CFG), 326 HCMD_NAME(SCAN_CFG_CMD), 327 HCMD_NAME(SCAN_REQ_UMAC), 328 HCMD_NAME(SCAN_ABORT_UMAC), 329 HCMD_NAME(SCAN_COMPLETE_UMAC), 330 HCMD_NAME(BA_WINDOW_STATUS_NOTIFICATION_ID), 331 HCMD_NAME(ADD_STA_KEY), 332 HCMD_NAME(ADD_STA), 333 HCMD_NAME(REMOVE_STA), 334 HCMD_NAME(FW_GET_ITEM_CMD), 335 HCMD_NAME(TX_CMD), 336 HCMD_NAME(SCD_QUEUE_CFG), 337 HCMD_NAME(TXPATH_FLUSH), 338 HCMD_NAME(MGMT_MCAST_KEY), 339 HCMD_NAME(WEP_KEY), 340 HCMD_NAME(SHARED_MEM_CFG), 341 HCMD_NAME(TDLS_CHANNEL_SWITCH_CMD), 342 HCMD_NAME(MAC_CONTEXT_CMD), 343 HCMD_NAME(TIME_EVENT_CMD), 344 HCMD_NAME(TIME_EVENT_NOTIFICATION), 345 HCMD_NAME(BINDING_CONTEXT_CMD), 346 HCMD_NAME(TIME_QUOTA_CMD), 347 HCMD_NAME(NON_QOS_TX_COUNTER_CMD), 348 HCMD_NAME(LEDS_CMD), 349 HCMD_NAME(LQ_CMD), 350 HCMD_NAME(FW_PAGING_BLOCK_CMD), 351 HCMD_NAME(SCAN_OFFLOAD_REQUEST_CMD), 352 HCMD_NAME(SCAN_OFFLOAD_ABORT_CMD), 353 HCMD_NAME(HOT_SPOT_CMD), 354 HCMD_NAME(SCAN_OFFLOAD_PROFILES_QUERY_CMD), 355 HCMD_NAME(BT_COEX_UPDATE_REDUCED_TXP), 356 HCMD_NAME(BT_COEX_CI), 357 HCMD_NAME(PHY_CONFIGURATION_CMD), 358 HCMD_NAME(CALIB_RES_NOTIF_PHY_DB), 359 HCMD_NAME(PHY_DB_CMD), 360 HCMD_NAME(SCAN_OFFLOAD_COMPLETE), 361 HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_CMD), 362 HCMD_NAME(POWER_TABLE_CMD), 363 HCMD_NAME(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION), 364 HCMD_NAME(REPLY_THERMAL_MNG_BACKOFF), 365 HCMD_NAME(DC2DC_CONFIG_CMD), 366 HCMD_NAME(NVM_ACCESS_CMD), 367 HCMD_NAME(BEACON_NOTIFICATION), 368 HCMD_NAME(BEACON_TEMPLATE_CMD), 369 HCMD_NAME(TX_ANT_CONFIGURATION_CMD), 370 HCMD_NAME(BT_CONFIG), 371 HCMD_NAME(STATISTICS_CMD), 372 HCMD_NAME(STATISTICS_NOTIFICATION), 373 HCMD_NAME(EOSP_NOTIFICATION), 374 HCMD_NAME(REDUCE_TX_POWER_CMD), 375 HCMD_NAME(CARD_STATE_NOTIFICATION), 376 HCMD_NAME(MISSED_BEACONS_NOTIFICATION), 377 HCMD_NAME(TDLS_CONFIG_CMD), 378 HCMD_NAME(MAC_PM_POWER_TABLE), 379 HCMD_NAME(TDLS_CHANNEL_SWITCH_NOTIFICATION), 380 HCMD_NAME(MFUART_LOAD_NOTIFICATION), 381 HCMD_NAME(RSS_CONFIG_CMD), 382 HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC), 383 HCMD_NAME(REPLY_RX_PHY_CMD), 384 HCMD_NAME(REPLY_RX_MPDU_CMD), 385 HCMD_NAME(FRAME_RELEASE), 386 HCMD_NAME(BA_NOTIF), 387 HCMD_NAME(MCC_UPDATE_CMD), 388 HCMD_NAME(MCC_CHUB_UPDATE_CMD), 389 HCMD_NAME(MARKER_CMD), 390 HCMD_NAME(BT_PROFILE_NOTIFICATION), 391 HCMD_NAME(BCAST_FILTER_CMD), 392 HCMD_NAME(MCAST_FILTER_CMD), 393 HCMD_NAME(REPLY_SF_CFG_CMD), 394 HCMD_NAME(REPLY_BEACON_FILTERING_CMD), 395 HCMD_NAME(D3_CONFIG_CMD), 396 HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD), 397 HCMD_NAME(OFFLOADS_QUERY_CMD), 398 HCMD_NAME(REMOTE_WAKE_CONFIG_CMD), 399 HCMD_NAME(MATCH_FOUND_NOTIFICATION), 400 HCMD_NAME(DTS_MEASUREMENT_NOTIFICATION), 401 HCMD_NAME(WOWLAN_PATTERNS), 402 HCMD_NAME(WOWLAN_CONFIGURATION), 403 HCMD_NAME(WOWLAN_TSC_RSC_PARAM), 404 HCMD_NAME(WOWLAN_TKIP_PARAM), 405 HCMD_NAME(WOWLAN_KEK_KCK_MATERIAL), 406 HCMD_NAME(WOWLAN_GET_STATUSES), 407 HCMD_NAME(SCAN_ITERATION_COMPLETE), 408 HCMD_NAME(D0I3_END_CMD), 409 HCMD_NAME(LTR_CONFIG), 410 }; 411 412 /* Please keep this array *SORTED* by hex value. 413 * Access is done through binary search 414 */ 415 static const struct iwl_hcmd_names iwl_mvm_system_names[] = { 416 HCMD_NAME(SHARED_MEM_CFG_CMD), 417 HCMD_NAME(INIT_EXTENDED_CFG_CMD), 418 }; 419 420 /* Please keep this array *SORTED* by hex value. 421 * Access is done through binary search 422 */ 423 static const struct iwl_hcmd_names iwl_mvm_mac_conf_names[] = { 424 HCMD_NAME(CHANNEL_SWITCH_NOA_NOTIF), 425 }; 426 427 /* Please keep this array *SORTED* by hex value. 428 * Access is done through binary search 429 */ 430 static const struct iwl_hcmd_names iwl_mvm_phy_names[] = { 431 HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE), 432 HCMD_NAME(CTDP_CONFIG_CMD), 433 HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD), 434 HCMD_NAME(GEO_TX_POWER_LIMIT), 435 HCMD_NAME(CT_KILL_NOTIFICATION), 436 HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE), 437 }; 438 439 /* Please keep this array *SORTED* by hex value. 440 * Access is done through binary search 441 */ 442 static const struct iwl_hcmd_names iwl_mvm_data_path_names[] = { 443 HCMD_NAME(DQA_ENABLE_CMD), 444 HCMD_NAME(UPDATE_MU_GROUPS_CMD), 445 HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD), 446 HCMD_NAME(STA_HE_CTXT_CMD), 447 HCMD_NAME(RFH_QUEUE_CONFIG_CMD), 448 HCMD_NAME(CHEST_COLLECTOR_FILTER_CONFIG_CMD), 449 HCMD_NAME(STA_PM_NOTIF), 450 HCMD_NAME(MU_GROUP_MGMT_NOTIF), 451 HCMD_NAME(RX_QUEUES_NOTIFICATION), 452 }; 453 454 /* Please keep this array *SORTED* by hex value. 455 * Access is done through binary search 456 */ 457 static const struct iwl_hcmd_names iwl_mvm_debug_names[] = { 458 HCMD_NAME(MFU_ASSERT_DUMP_NTF), 459 }; 460 461 /* Please keep this array *SORTED* by hex value. 462 * Access is done through binary search 463 */ 464 static const struct iwl_hcmd_names iwl_mvm_location_names[] = { 465 HCMD_NAME(TOF_RANGE_REQ_CMD), 466 HCMD_NAME(TOF_CONFIG_CMD), 467 HCMD_NAME(TOF_RANGE_ABORT_CMD), 468 HCMD_NAME(TOF_RANGE_REQ_EXT_CMD), 469 HCMD_NAME(TOF_RESPONDER_CONFIG_CMD), 470 HCMD_NAME(TOF_RESPONDER_DYN_CONFIG_CMD), 471 HCMD_NAME(TOF_LC_NOTIF), 472 HCMD_NAME(TOF_RESPONDER_STATS), 473 HCMD_NAME(TOF_MCSI_DEBUG_NOTIF), 474 HCMD_NAME(TOF_RANGE_RESPONSE_NOTIF), 475 }; 476 477 /* Please keep this array *SORTED* by hex value. 478 * Access is done through binary search 479 */ 480 static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = { 481 HCMD_NAME(STORED_BEACON_NTF), 482 }; 483 484 /* Please keep this array *SORTED* by hex value. 485 * Access is done through binary search 486 */ 487 static const struct iwl_hcmd_names iwl_mvm_regulatory_and_nvm_names[] = { 488 HCMD_NAME(NVM_ACCESS_COMPLETE), 489 HCMD_NAME(NVM_GET_INFO), 490 }; 491 492 static const struct iwl_hcmd_arr iwl_mvm_groups[] = { 493 [LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names), 494 [LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names), 495 [SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names), 496 [MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names), 497 [PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names), 498 [DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names), 499 [LOCATION_GROUP] = HCMD_ARR(iwl_mvm_location_names), 500 [PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names), 501 [REGULATORY_AND_NVM_GROUP] = 502 HCMD_ARR(iwl_mvm_regulatory_and_nvm_names), 503 }; 504 505 /* this forward declaration can avoid to export the function */ 506 static void iwl_mvm_async_handlers_wk(struct work_struct *wk); 507 #ifdef CONFIG_PM 508 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk); 509 #endif 510 511 static u32 iwl_mvm_min_backoff(struct iwl_mvm *mvm) 512 { 513 const struct iwl_pwr_tx_backoff *backoff = mvm->cfg->pwr_tx_backoffs; 514 u64 dflt_pwr_limit; 515 516 if (!backoff) 517 return 0; 518 519 dflt_pwr_limit = iwl_acpi_get_pwr_limit(mvm->dev); 520 521 while (backoff->pwr) { 522 if (dflt_pwr_limit >= backoff->pwr) 523 return backoff->backoff; 524 525 backoff++; 526 } 527 528 return 0; 529 } 530 531 static void iwl_mvm_tx_unblock_dwork(struct work_struct *work) 532 { 533 struct iwl_mvm *mvm = 534 container_of(work, struct iwl_mvm, cs_tx_unblock_dwork.work); 535 struct ieee80211_vif *tx_blocked_vif; 536 struct iwl_mvm_vif *mvmvif; 537 538 mutex_lock(&mvm->mutex); 539 540 tx_blocked_vif = 541 rcu_dereference_protected(mvm->csa_tx_blocked_vif, 542 lockdep_is_held(&mvm->mutex)); 543 544 if (!tx_blocked_vif) 545 goto unlock; 546 547 mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif); 548 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false); 549 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); 550 unlock: 551 mutex_unlock(&mvm->mutex); 552 } 553 554 static int iwl_mvm_fwrt_dump_start(void *ctx) 555 { 556 struct iwl_mvm *mvm = ctx; 557 int ret; 558 559 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT); 560 if (ret) 561 return ret; 562 563 mutex_lock(&mvm->mutex); 564 565 return 0; 566 } 567 568 static void iwl_mvm_fwrt_dump_end(void *ctx) 569 { 570 struct iwl_mvm *mvm = ctx; 571 572 mutex_unlock(&mvm->mutex); 573 574 iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT); 575 } 576 577 static bool iwl_mvm_fwrt_fw_running(void *ctx) 578 { 579 return iwl_mvm_firmware_running(ctx); 580 } 581 582 static int iwl_mvm_fwrt_send_hcmd(void *ctx, struct iwl_host_cmd *host_cmd) 583 { 584 struct iwl_mvm *mvm = (struct iwl_mvm *)ctx; 585 int ret; 586 587 mutex_lock(&mvm->mutex); 588 ret = iwl_mvm_send_cmd(mvm, host_cmd); 589 mutex_unlock(&mvm->mutex); 590 591 return ret; 592 } 593 594 static const struct iwl_fw_runtime_ops iwl_mvm_fwrt_ops = { 595 .dump_start = iwl_mvm_fwrt_dump_start, 596 .dump_end = iwl_mvm_fwrt_dump_end, 597 .fw_running = iwl_mvm_fwrt_fw_running, 598 .send_hcmd = iwl_mvm_fwrt_send_hcmd, 599 }; 600 601 static struct iwl_op_mode * 602 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg, 603 const struct iwl_fw *fw, struct dentry *dbgfs_dir) 604 { 605 struct ieee80211_hw *hw; 606 struct iwl_op_mode *op_mode; 607 struct iwl_mvm *mvm; 608 struct iwl_trans_config trans_cfg = {}; 609 static const u8 no_reclaim_cmds[] = { 610 TX_CMD, 611 }; 612 int err, scan_size; 613 u32 min_backoff; 614 enum iwl_amsdu_size rb_size_default; 615 616 /* 617 * We use IWL_MVM_STATION_COUNT to check the validity of the station 618 * index all over the driver - check that its value corresponds to the 619 * array size. 620 */ 621 BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT); 622 623 /******************************** 624 * 1. Allocating and configuring HW data 625 ********************************/ 626 hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) + 627 sizeof(struct iwl_mvm), 628 &iwl_mvm_hw_ops); 629 if (!hw) 630 return NULL; 631 632 if (cfg->max_rx_agg_size) 633 hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size; 634 else 635 hw->max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF; 636 637 if (cfg->max_tx_agg_size) 638 hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size; 639 else 640 hw->max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF; 641 642 op_mode = hw->priv; 643 644 mvm = IWL_OP_MODE_GET_MVM(op_mode); 645 mvm->dev = trans->dev; 646 mvm->trans = trans; 647 mvm->cfg = cfg; 648 mvm->fw = fw; 649 mvm->hw = hw; 650 651 iwl_fw_runtime_init(&mvm->fwrt, trans, fw, &iwl_mvm_fwrt_ops, mvm, 652 dbgfs_dir); 653 654 mvm->init_status = 0; 655 656 if (iwl_mvm_has_new_rx_api(mvm)) { 657 op_mode->ops = &iwl_mvm_ops_mq; 658 trans->rx_mpdu_cmd_hdr_size = 659 (trans->cfg->device_family >= 660 IWL_DEVICE_FAMILY_22560) ? 661 sizeof(struct iwl_rx_mpdu_desc) : 662 IWL_RX_DESC_SIZE_V1; 663 } else { 664 op_mode->ops = &iwl_mvm_ops; 665 trans->rx_mpdu_cmd_hdr_size = 666 sizeof(struct iwl_rx_mpdu_res_start); 667 668 if (WARN_ON(trans->num_rx_queues > 1)) 669 goto out_free; 670 } 671 672 mvm->fw_restart = iwlwifi_mod_params.fw_restart ? -1 : 0; 673 674 mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE; 675 mvm->snif_queue = IWL_MVM_DQA_INJECT_MONITOR_QUEUE; 676 mvm->probe_queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE; 677 mvm->p2p_dev_queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE; 678 679 mvm->sf_state = SF_UNINIT; 680 if (iwl_mvm_has_unified_ucode(mvm)) 681 iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_REGULAR); 682 else 683 iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_INIT); 684 mvm->drop_bcn_ap_mode = true; 685 686 mutex_init(&mvm->mutex); 687 mutex_init(&mvm->d0i3_suspend_mutex); 688 spin_lock_init(&mvm->async_handlers_lock); 689 INIT_LIST_HEAD(&mvm->time_event_list); 690 INIT_LIST_HEAD(&mvm->aux_roc_te_list); 691 INIT_LIST_HEAD(&mvm->async_handlers_list); 692 spin_lock_init(&mvm->time_event_lock); 693 694 INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk); 695 INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk); 696 #ifdef CONFIG_PM 697 INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work); 698 #endif 699 INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work); 700 INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk); 701 INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk); 702 INIT_LIST_HEAD(&mvm->add_stream_txqs); 703 704 spin_lock_init(&mvm->d0i3_tx_lock); 705 spin_lock_init(&mvm->refs_lock); 706 skb_queue_head_init(&mvm->d0i3_tx); 707 init_waitqueue_head(&mvm->d0i3_exit_waitq); 708 init_waitqueue_head(&mvm->rx_sync_waitq); 709 710 atomic_set(&mvm->queue_sync_counter, 0); 711 712 SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev); 713 714 spin_lock_init(&mvm->tcm.lock); 715 INIT_DELAYED_WORK(&mvm->tcm.work, iwl_mvm_tcm_work); 716 mvm->tcm.ts = jiffies; 717 mvm->tcm.ll_ts = jiffies; 718 mvm->tcm.uapsd_nonagg_ts = jiffies; 719 720 INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork); 721 722 /* 723 * Populate the state variables that the transport layer needs 724 * to know about. 725 */ 726 trans_cfg.op_mode = op_mode; 727 trans_cfg.no_reclaim_cmds = no_reclaim_cmds; 728 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds); 729 730 if (mvm->trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560) 731 rb_size_default = IWL_AMSDU_2K; 732 else 733 rb_size_default = IWL_AMSDU_4K; 734 735 switch (iwlwifi_mod_params.amsdu_size) { 736 case IWL_AMSDU_DEF: 737 trans_cfg.rx_buf_size = rb_size_default; 738 break; 739 case IWL_AMSDU_4K: 740 trans_cfg.rx_buf_size = IWL_AMSDU_4K; 741 break; 742 case IWL_AMSDU_8K: 743 trans_cfg.rx_buf_size = IWL_AMSDU_8K; 744 break; 745 case IWL_AMSDU_12K: 746 trans_cfg.rx_buf_size = IWL_AMSDU_12K; 747 break; 748 default: 749 pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME, 750 iwlwifi_mod_params.amsdu_size); 751 trans_cfg.rx_buf_size = rb_size_default; 752 } 753 754 BUILD_BUG_ON(sizeof(struct iwl_ldbg_config_cmd) != 755 LDBG_CFG_COMMAND_SIZE); 756 757 trans->wide_cmd_header = true; 758 trans_cfg.bc_table_dword = 759 mvm->trans->cfg->device_family < IWL_DEVICE_FAMILY_22560; 760 761 trans_cfg.command_groups = iwl_mvm_groups; 762 trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups); 763 764 trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE; 765 trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD; 766 trans_cfg.scd_set_active = true; 767 768 trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info, 769 driver_data[2]); 770 771 trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD; 772 773 /* Set a short watchdog for the command queue */ 774 trans_cfg.cmd_q_wdg_timeout = 775 iwl_mvm_get_wd_timeout(mvm, NULL, false, true); 776 777 snprintf(mvm->hw->wiphy->fw_version, 778 sizeof(mvm->hw->wiphy->fw_version), 779 "%s", fw->fw_version); 780 781 /* Configure transport layer */ 782 iwl_trans_configure(mvm->trans, &trans_cfg); 783 784 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD; 785 trans->dbg_dest_tlv = mvm->fw->dbg.dest_tlv; 786 trans->dbg_n_dest_reg = mvm->fw->dbg.n_dest_reg; 787 memcpy(trans->dbg_conf_tlv, mvm->fw->dbg.conf_tlv, 788 sizeof(trans->dbg_conf_tlv)); 789 trans->dbg_trigger_tlv = mvm->fw->dbg.trigger_tlv; 790 791 trans->iml = mvm->fw->iml; 792 trans->iml_len = mvm->fw->iml_len; 793 794 /* set up notification wait support */ 795 iwl_notification_wait_init(&mvm->notif_wait); 796 797 /* Init phy db */ 798 mvm->phy_db = iwl_phy_db_init(trans); 799 if (!mvm->phy_db) { 800 IWL_ERR(mvm, "Cannot init phy_db\n"); 801 goto out_free; 802 } 803 804 IWL_INFO(mvm, "Detected %s, REV=0x%X\n", 805 mvm->cfg->name, mvm->trans->hw_rev); 806 807 if (iwlwifi_mod_params.nvm_file) 808 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file; 809 else 810 IWL_DEBUG_EEPROM(mvm->trans->dev, 811 "working without external nvm file\n"); 812 813 err = iwl_trans_start_hw(mvm->trans); 814 if (err) 815 goto out_free; 816 817 mutex_lock(&mvm->mutex); 818 iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE); 819 err = iwl_run_init_mvm_ucode(mvm, true); 820 if (test_bit(IWL_FWRT_STATUS_WAIT_ALIVE, &mvm->fwrt.status)) 821 iwl_fw_alive_error_dump(&mvm->fwrt); 822 if (!iwlmvm_mod_params.init_dbg || !err) 823 iwl_mvm_stop_device(mvm); 824 iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE); 825 mutex_unlock(&mvm->mutex); 826 if (err < 0) { 827 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err); 828 goto out_free; 829 } 830 831 scan_size = iwl_mvm_scan_size(mvm); 832 833 mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL); 834 if (!mvm->scan_cmd) 835 goto out_free; 836 837 /* Set EBS as successful as long as not stated otherwise by the FW. */ 838 mvm->last_ebs_successful = true; 839 840 err = iwl_mvm_mac_setup_register(mvm); 841 if (err) 842 goto out_free; 843 mvm->hw_registered = true; 844 845 min_backoff = iwl_mvm_min_backoff(mvm); 846 iwl_mvm_thermal_initialize(mvm, min_backoff); 847 848 err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir); 849 if (err) 850 goto out_unregister; 851 852 if (!iwl_mvm_has_new_rx_stats_api(mvm)) 853 memset(&mvm->rx_stats_v3, 0, 854 sizeof(struct mvm_statistics_rx_v3)); 855 else 856 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx)); 857 858 /* The transport always starts with a taken reference, we can 859 * release it now if d0i3 is supported */ 860 if (iwl_mvm_is_d0i3_supported(mvm)) 861 iwl_trans_unref(mvm->trans); 862 863 iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx); 864 865 return op_mode; 866 867 out_unregister: 868 if (iwlmvm_mod_params.init_dbg) 869 return op_mode; 870 871 ieee80211_unregister_hw(mvm->hw); 872 mvm->hw_registered = false; 873 iwl_mvm_leds_exit(mvm); 874 iwl_mvm_thermal_exit(mvm); 875 out_free: 876 iwl_fw_flush_dump(&mvm->fwrt); 877 iwl_fw_runtime_free(&mvm->fwrt); 878 879 if (iwlmvm_mod_params.init_dbg) 880 return op_mode; 881 iwl_phy_db_free(mvm->phy_db); 882 kfree(mvm->scan_cmd); 883 iwl_trans_op_mode_leave(trans); 884 885 ieee80211_free_hw(mvm->hw); 886 return NULL; 887 } 888 889 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode) 890 { 891 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 892 int i; 893 894 /* If d0i3 is supported, we have released the reference that 895 * the transport started with, so we should take it back now 896 * that we are leaving. 897 */ 898 if (iwl_mvm_is_d0i3_supported(mvm)) 899 iwl_trans_ref(mvm->trans); 900 901 iwl_mvm_leds_exit(mvm); 902 903 iwl_mvm_thermal_exit(mvm); 904 905 if (mvm->init_status & IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE) { 906 ieee80211_unregister_hw(mvm->hw); 907 mvm->init_status &= ~IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE; 908 } 909 910 kfree(mvm->scan_cmd); 911 kfree(mvm->mcast_filter_cmd); 912 mvm->mcast_filter_cmd = NULL; 913 914 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS) 915 kfree(mvm->d3_resume_sram); 916 #endif 917 iwl_trans_op_mode_leave(mvm->trans); 918 919 iwl_phy_db_free(mvm->phy_db); 920 mvm->phy_db = NULL; 921 922 kfree(mvm->nvm_data); 923 for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++) 924 kfree(mvm->nvm_sections[i].data); 925 926 cancel_delayed_work_sync(&mvm->tcm.work); 927 928 iwl_fw_runtime_free(&mvm->fwrt); 929 mutex_destroy(&mvm->mutex); 930 mutex_destroy(&mvm->d0i3_suspend_mutex); 931 932 ieee80211_free_hw(mvm->hw); 933 } 934 935 struct iwl_async_handler_entry { 936 struct list_head list; 937 struct iwl_rx_cmd_buffer rxb; 938 enum iwl_rx_handler_context context; 939 void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb); 940 }; 941 942 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm) 943 { 944 struct iwl_async_handler_entry *entry, *tmp; 945 946 spin_lock_bh(&mvm->async_handlers_lock); 947 list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) { 948 iwl_free_rxb(&entry->rxb); 949 list_del(&entry->list); 950 kfree(entry); 951 } 952 spin_unlock_bh(&mvm->async_handlers_lock); 953 } 954 955 static void iwl_mvm_async_handlers_wk(struct work_struct *wk) 956 { 957 struct iwl_mvm *mvm = 958 container_of(wk, struct iwl_mvm, async_handlers_wk); 959 struct iwl_async_handler_entry *entry, *tmp; 960 LIST_HEAD(local_list); 961 962 /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */ 963 964 /* 965 * Sync with Rx path with a lock. Remove all the entries from this list, 966 * add them to a local one (lock free), and then handle them. 967 */ 968 spin_lock_bh(&mvm->async_handlers_lock); 969 list_splice_init(&mvm->async_handlers_list, &local_list); 970 spin_unlock_bh(&mvm->async_handlers_lock); 971 972 list_for_each_entry_safe(entry, tmp, &local_list, list) { 973 if (entry->context == RX_HANDLER_ASYNC_LOCKED) 974 mutex_lock(&mvm->mutex); 975 entry->fn(mvm, &entry->rxb); 976 iwl_free_rxb(&entry->rxb); 977 list_del(&entry->list); 978 if (entry->context == RX_HANDLER_ASYNC_LOCKED) 979 mutex_unlock(&mvm->mutex); 980 kfree(entry); 981 } 982 } 983 984 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm, 985 struct iwl_rx_packet *pkt) 986 { 987 struct iwl_fw_dbg_trigger_tlv *trig; 988 struct iwl_fw_dbg_trigger_cmd *cmds_trig; 989 int i; 990 991 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, NULL, 992 FW_DBG_TRIGGER_FW_NOTIF); 993 if (!trig) 994 return; 995 996 cmds_trig = (void *)trig->data; 997 998 for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) { 999 /* don't collect on CMD 0 */ 1000 if (!cmds_trig->cmds[i].cmd_id) 1001 break; 1002 1003 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd || 1004 cmds_trig->cmds[i].group_id != pkt->hdr.group_id) 1005 continue; 1006 1007 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 1008 "CMD 0x%02x.%02x received", 1009 pkt->hdr.group_id, pkt->hdr.cmd); 1010 break; 1011 } 1012 } 1013 1014 static void iwl_mvm_rx_common(struct iwl_mvm *mvm, 1015 struct iwl_rx_cmd_buffer *rxb, 1016 struct iwl_rx_packet *pkt) 1017 { 1018 int i; 1019 1020 iwl_mvm_rx_check_trigger(mvm, pkt); 1021 1022 /* 1023 * Do the notification wait before RX handlers so 1024 * even if the RX handler consumes the RXB we have 1025 * access to it in the notification wait entry. 1026 */ 1027 iwl_notification_wait_notify(&mvm->notif_wait, pkt); 1028 1029 for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) { 1030 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i]; 1031 struct iwl_async_handler_entry *entry; 1032 1033 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) 1034 continue; 1035 1036 if (rx_h->context == RX_HANDLER_SYNC) { 1037 rx_h->fn(mvm, rxb); 1038 return; 1039 } 1040 1041 entry = kzalloc(sizeof(*entry), GFP_ATOMIC); 1042 /* we can't do much... */ 1043 if (!entry) 1044 return; 1045 1046 entry->rxb._page = rxb_steal_page(rxb); 1047 entry->rxb._offset = rxb->_offset; 1048 entry->rxb._rx_page_order = rxb->_rx_page_order; 1049 entry->fn = rx_h->fn; 1050 entry->context = rx_h->context; 1051 spin_lock(&mvm->async_handlers_lock); 1052 list_add_tail(&entry->list, &mvm->async_handlers_list); 1053 spin_unlock(&mvm->async_handlers_lock); 1054 schedule_work(&mvm->async_handlers_wk); 1055 break; 1056 } 1057 } 1058 1059 static void iwl_mvm_rx(struct iwl_op_mode *op_mode, 1060 struct napi_struct *napi, 1061 struct iwl_rx_cmd_buffer *rxb) 1062 { 1063 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1064 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1065 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); 1066 1067 if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))) 1068 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb); 1069 else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD)) 1070 iwl_mvm_rx_rx_phy_cmd(mvm, rxb); 1071 else 1072 iwl_mvm_rx_common(mvm, rxb, pkt); 1073 } 1074 1075 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode, 1076 struct napi_struct *napi, 1077 struct iwl_rx_cmd_buffer *rxb) 1078 { 1079 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1080 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1081 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); 1082 1083 if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))) 1084 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0); 1085 else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP, 1086 RX_QUEUES_NOTIFICATION))) 1087 iwl_mvm_rx_queue_notif(mvm, rxb, 0); 1088 else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)) 1089 iwl_mvm_rx_frame_release(mvm, napi, rxb, 0); 1090 else if (cmd == WIDE_ID(DATA_PATH_GROUP, RX_NO_DATA_NOTIF)) 1091 iwl_mvm_rx_monitor_ndp(mvm, napi, rxb, 0); 1092 else 1093 iwl_mvm_rx_common(mvm, rxb, pkt); 1094 } 1095 1096 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode, 1097 const struct iwl_device_cmd *cmd) 1098 { 1099 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1100 1101 /* 1102 * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA 1103 * commands that need to block the Tx queues. 1104 */ 1105 iwl_trans_block_txq_ptrs(mvm->trans, false); 1106 } 1107 1108 static void iwl_mvm_queue_state_change(struct iwl_op_mode *op_mode, 1109 int hw_queue, bool start) 1110 { 1111 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1112 struct ieee80211_sta *sta; 1113 struct ieee80211_txq *txq; 1114 struct iwl_mvm_txq *mvmtxq; 1115 int i; 1116 unsigned long tid_bitmap; 1117 struct iwl_mvm_sta *mvmsta; 1118 u8 sta_id; 1119 1120 sta_id = iwl_mvm_has_new_tx_api(mvm) ? 1121 mvm->tvqm_info[hw_queue].sta_id : 1122 mvm->queue_info[hw_queue].ra_sta_id; 1123 1124 if (WARN_ON_ONCE(sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id))) 1125 return; 1126 1127 rcu_read_lock(); 1128 1129 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 1130 if (IS_ERR_OR_NULL(sta)) 1131 goto out; 1132 mvmsta = iwl_mvm_sta_from_mac80211(sta); 1133 1134 if (iwl_mvm_has_new_tx_api(mvm)) { 1135 int tid = mvm->tvqm_info[hw_queue].txq_tid; 1136 1137 tid_bitmap = BIT(tid); 1138 } else { 1139 tid_bitmap = mvm->queue_info[hw_queue].tid_bitmap; 1140 } 1141 1142 for_each_set_bit(i, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1143 int tid = i; 1144 1145 if (tid == IWL_MAX_TID_COUNT) 1146 tid = IEEE80211_NUM_TIDS; 1147 1148 txq = sta->txq[tid]; 1149 mvmtxq = iwl_mvm_txq_from_mac80211(txq); 1150 mvmtxq->stopped = !start; 1151 1152 if (start && mvmsta->sta_state != IEEE80211_STA_NOTEXIST) 1153 iwl_mvm_mac_itxq_xmit(mvm->hw, txq); 1154 } 1155 1156 out: 1157 rcu_read_unlock(); 1158 } 1159 1160 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue) 1161 { 1162 iwl_mvm_queue_state_change(op_mode, hw_queue, false); 1163 } 1164 1165 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue) 1166 { 1167 iwl_mvm_queue_state_change(op_mode, hw_queue, true); 1168 } 1169 1170 static void iwl_mvm_set_rfkill_state(struct iwl_mvm *mvm) 1171 { 1172 bool state = iwl_mvm_is_radio_killed(mvm); 1173 1174 if (state) 1175 wake_up(&mvm->rx_sync_waitq); 1176 1177 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, state); 1178 } 1179 1180 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state) 1181 { 1182 if (state) 1183 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); 1184 else 1185 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); 1186 1187 iwl_mvm_set_rfkill_state(mvm); 1188 } 1189 1190 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state) 1191 { 1192 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1193 bool calibrating = READ_ONCE(mvm->calibrating); 1194 1195 if (state) 1196 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); 1197 else 1198 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); 1199 1200 iwl_mvm_set_rfkill_state(mvm); 1201 1202 /* iwl_run_init_mvm_ucode is waiting for results, abort it */ 1203 if (calibrating) 1204 iwl_abort_notification_waits(&mvm->notif_wait); 1205 1206 /* 1207 * Stop the device if we run OPERATIONAL firmware or if we are in the 1208 * middle of the calibrations. 1209 */ 1210 return state && (mvm->fwrt.cur_fw_img != IWL_UCODE_INIT || calibrating); 1211 } 1212 1213 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb) 1214 { 1215 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1216 struct ieee80211_tx_info *info; 1217 1218 info = IEEE80211_SKB_CB(skb); 1219 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]); 1220 ieee80211_free_txskb(mvm->hw, skb); 1221 } 1222 1223 struct iwl_mvm_reprobe { 1224 struct device *dev; 1225 struct work_struct work; 1226 }; 1227 1228 static void iwl_mvm_reprobe_wk(struct work_struct *wk) 1229 { 1230 struct iwl_mvm_reprobe *reprobe; 1231 1232 reprobe = container_of(wk, struct iwl_mvm_reprobe, work); 1233 if (device_reprobe(reprobe->dev)) 1234 dev_err(reprobe->dev, "reprobe failed!\n"); 1235 kfree(reprobe); 1236 module_put(THIS_MODULE); 1237 } 1238 1239 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error) 1240 { 1241 iwl_abort_notification_waits(&mvm->notif_wait); 1242 1243 /* 1244 * This is a bit racy, but worst case we tell mac80211 about 1245 * a stopped/aborted scan when that was already done which 1246 * is not a problem. It is necessary to abort any os scan 1247 * here because mac80211 requires having the scan cleared 1248 * before restarting. 1249 * We'll reset the scan_status to NONE in restart cleanup in 1250 * the next start() call from mac80211. If restart isn't called 1251 * (no fw restart) scan status will stay busy. 1252 */ 1253 iwl_mvm_report_scan_aborted(mvm); 1254 1255 /* 1256 * If we're restarting already, don't cycle restarts. 1257 * If INIT fw asserted, it will likely fail again. 1258 * If WoWLAN fw asserted, don't restart either, mac80211 1259 * can't recover this since we're already half suspended. 1260 */ 1261 if (!mvm->fw_restart && fw_error) { 1262 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert, 1263 false, 0); 1264 } else if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1265 struct iwl_mvm_reprobe *reprobe; 1266 1267 IWL_ERR(mvm, 1268 "Firmware error during reconfiguration - reprobe!\n"); 1269 1270 /* 1271 * get a module reference to avoid doing this while unloading 1272 * anyway and to avoid scheduling a work with code that's 1273 * being removed. 1274 */ 1275 if (!try_module_get(THIS_MODULE)) { 1276 IWL_ERR(mvm, "Module is being unloaded - abort\n"); 1277 return; 1278 } 1279 1280 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC); 1281 if (!reprobe) { 1282 module_put(THIS_MODULE); 1283 return; 1284 } 1285 reprobe->dev = mvm->trans->dev; 1286 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk); 1287 schedule_work(&reprobe->work); 1288 } else if (mvm->fwrt.cur_fw_img == IWL_UCODE_REGULAR && 1289 mvm->hw_registered && 1290 !test_bit(STATUS_TRANS_DEAD, &mvm->trans->status)) { 1291 /* don't let the transport/FW power down */ 1292 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); 1293 1294 if (fw_error && mvm->fw_restart > 0) 1295 mvm->fw_restart--; 1296 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); 1297 ieee80211_restart_hw(mvm->hw); 1298 } 1299 } 1300 1301 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode) 1302 { 1303 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1304 1305 if (!test_bit(STATUS_TRANS_DEAD, &mvm->trans->status)) 1306 iwl_mvm_dump_nic_error_log(mvm); 1307 1308 iwl_mvm_nic_restart(mvm, true); 1309 } 1310 1311 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode) 1312 { 1313 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1314 1315 WARN_ON(1); 1316 iwl_mvm_nic_restart(mvm, true); 1317 } 1318 1319 #ifdef CONFIG_PM 1320 struct iwl_d0i3_iter_data { 1321 struct iwl_mvm *mvm; 1322 struct ieee80211_vif *connected_vif; 1323 u8 ap_sta_id; 1324 u8 vif_count; 1325 u8 offloading_tid; 1326 bool disable_offloading; 1327 }; 1328 1329 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm, 1330 struct ieee80211_vif *vif, 1331 struct iwl_d0i3_iter_data *iter_data) 1332 { 1333 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1334 struct iwl_mvm_sta *mvmsta; 1335 u32 available_tids = 0; 1336 u8 tid; 1337 1338 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION || 1339 mvmvif->ap_sta_id == IWL_MVM_INVALID_STA)) 1340 return false; 1341 1342 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); 1343 if (!mvmsta) 1344 return false; 1345 1346 spin_lock_bh(&mvmsta->lock); 1347 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1348 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 1349 1350 /* 1351 * in case of pending tx packets, don't use this tid 1352 * for offloading in order to prevent reuse of the same 1353 * qos seq counters. 1354 */ 1355 if (iwl_mvm_tid_queued(mvm, tid_data)) 1356 continue; 1357 1358 if (tid_data->state != IWL_AGG_OFF) 1359 continue; 1360 1361 available_tids |= BIT(tid); 1362 } 1363 spin_unlock_bh(&mvmsta->lock); 1364 1365 /* 1366 * disallow protocol offloading if we have no available tid 1367 * (with no pending frames and no active aggregation, 1368 * as we don't handle "holes" properly - the scheduler needs the 1369 * frame's seq number and TFD index to match) 1370 */ 1371 if (!available_tids) 1372 return true; 1373 1374 /* for simplicity, just use the first available tid */ 1375 iter_data->offloading_tid = ffs(available_tids) - 1; 1376 return false; 1377 } 1378 1379 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac, 1380 struct ieee80211_vif *vif) 1381 { 1382 struct iwl_d0i3_iter_data *data = _data; 1383 struct iwl_mvm *mvm = data->mvm; 1384 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1385 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; 1386 1387 IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr); 1388 if (vif->type != NL80211_IFTYPE_STATION || 1389 !vif->bss_conf.assoc) 1390 return; 1391 1392 /* 1393 * in case of pending tx packets or active aggregations, 1394 * avoid offloading features in order to prevent reuse of 1395 * the same qos seq counters. 1396 */ 1397 if (iwl_mvm_disallow_offloading(mvm, vif, data)) 1398 data->disable_offloading = true; 1399 1400 iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags); 1401 iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading, 1402 false, flags); 1403 1404 /* 1405 * on init/association, mvm already configures POWER_TABLE_CMD 1406 * and REPLY_MCAST_FILTER_CMD, so currently don't 1407 * reconfigure them (we might want to use different 1408 * params later on, though). 1409 */ 1410 data->ap_sta_id = mvmvif->ap_sta_id; 1411 data->vif_count++; 1412 1413 /* 1414 * no new commands can be sent at this stage, so it's safe 1415 * to save the vif pointer during d0i3 entrance. 1416 */ 1417 data->connected_vif = vif; 1418 } 1419 1420 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm, 1421 struct iwl_wowlan_config_cmd *cmd, 1422 struct iwl_d0i3_iter_data *iter_data) 1423 { 1424 struct ieee80211_sta *ap_sta; 1425 struct iwl_mvm_sta *mvm_ap_sta; 1426 1427 if (iter_data->ap_sta_id == IWL_MVM_INVALID_STA) 1428 return; 1429 1430 rcu_read_lock(); 1431 1432 ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]); 1433 if (IS_ERR_OR_NULL(ap_sta)) 1434 goto out; 1435 1436 mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta); 1437 cmd->is_11n_connection = ap_sta->ht_cap.ht_supported; 1438 cmd->offloading_tid = iter_data->offloading_tid; 1439 cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING | 1440 ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON; 1441 /* 1442 * The d0i3 uCode takes care of the nonqos counters, 1443 * so configure only the qos seq ones. 1444 */ 1445 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd); 1446 out: 1447 rcu_read_unlock(); 1448 } 1449 1450 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode) 1451 { 1452 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1453 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; 1454 int ret; 1455 struct iwl_d0i3_iter_data d0i3_iter_data = { 1456 .mvm = mvm, 1457 }; 1458 struct iwl_wowlan_config_cmd wowlan_config_cmd = { 1459 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME | 1460 IWL_WOWLAN_WAKEUP_BEACON_MISS | 1461 IWL_WOWLAN_WAKEUP_LINK_CHANGE), 1462 }; 1463 struct iwl_d3_manager_config d3_cfg_cmd = { 1464 .min_sleep_time = cpu_to_le32(1000), 1465 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR), 1466 }; 1467 1468 IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n"); 1469 1470 if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR)) 1471 return -EINVAL; 1472 1473 set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1474 1475 /* 1476 * iwl_mvm_ref_sync takes a reference before checking the flag. 1477 * so by checking there is no held reference we prevent a state 1478 * in which iwl_mvm_ref_sync continues successfully while we 1479 * configure the firmware to enter d0i3 1480 */ 1481 if (iwl_mvm_ref_taken(mvm)) { 1482 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n"); 1483 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1484 wake_up(&mvm->d0i3_exit_waitq); 1485 return 1; 1486 } 1487 1488 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1489 IEEE80211_IFACE_ITER_NORMAL, 1490 iwl_mvm_enter_d0i3_iterator, 1491 &d0i3_iter_data); 1492 if (d0i3_iter_data.vif_count == 1) { 1493 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id; 1494 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading; 1495 } else { 1496 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1); 1497 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA; 1498 mvm->d0i3_offloading = false; 1499 } 1500 1501 iwl_mvm_pause_tcm(mvm, true); 1502 /* make sure we have no running tx while configuring the seqno */ 1503 synchronize_net(); 1504 1505 /* Flush the hw queues, in case something got queued during entry */ 1506 /* TODO new tx api */ 1507 if (iwl_mvm_has_new_tx_api(mvm)) { 1508 WARN_ONCE(1, "d0i3: Need to implement flush TX queue\n"); 1509 } else { 1510 ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm), 1511 flags); 1512 if (ret) 1513 return ret; 1514 } 1515 1516 /* configure wowlan configuration only if needed */ 1517 if (mvm->d0i3_ap_sta_id != IWL_MVM_INVALID_STA) { 1518 /* wake on beacons only if beacon storing isn't supported */ 1519 if (!fw_has_capa(&mvm->fw->ucode_capa, 1520 IWL_UCODE_TLV_CAPA_BEACON_STORING)) 1521 wowlan_config_cmd.wakeup_filter |= 1522 cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING); 1523 1524 iwl_mvm_wowlan_config_key_params(mvm, 1525 d0i3_iter_data.connected_vif, 1526 true, flags); 1527 1528 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd, 1529 &d0i3_iter_data); 1530 1531 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags, 1532 sizeof(wowlan_config_cmd), 1533 &wowlan_config_cmd); 1534 if (ret) 1535 return ret; 1536 } 1537 1538 return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD, 1539 flags | CMD_MAKE_TRANS_IDLE, 1540 sizeof(d3_cfg_cmd), &d3_cfg_cmd); 1541 } 1542 1543 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac, 1544 struct ieee80211_vif *vif) 1545 { 1546 struct iwl_mvm *mvm = _data; 1547 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO; 1548 1549 IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr); 1550 if (vif->type != NL80211_IFTYPE_STATION || 1551 !vif->bss_conf.assoc) 1552 return; 1553 1554 iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags); 1555 } 1556 1557 struct iwl_mvm_d0i3_exit_work_iter_data { 1558 struct iwl_mvm *mvm; 1559 struct iwl_wowlan_status *status; 1560 u32 wakeup_reasons; 1561 }; 1562 1563 static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac, 1564 struct ieee80211_vif *vif) 1565 { 1566 struct iwl_mvm_d0i3_exit_work_iter_data *data = _data; 1567 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1568 u32 reasons = data->wakeup_reasons; 1569 1570 /* consider only the relevant station interface */ 1571 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc || 1572 data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id) 1573 return; 1574 1575 if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH) 1576 iwl_mvm_connection_loss(data->mvm, vif, "D0i3"); 1577 else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON) 1578 ieee80211_beacon_loss(vif); 1579 else 1580 iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status); 1581 } 1582 1583 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq) 1584 { 1585 struct ieee80211_sta *sta = NULL; 1586 struct iwl_mvm_sta *mvm_ap_sta; 1587 int i; 1588 bool wake_queues = false; 1589 1590 lockdep_assert_held(&mvm->mutex); 1591 1592 spin_lock_bh(&mvm->d0i3_tx_lock); 1593 1594 if (mvm->d0i3_ap_sta_id == IWL_MVM_INVALID_STA) 1595 goto out; 1596 1597 IWL_DEBUG_RPM(mvm, "re-enqueue packets\n"); 1598 1599 /* get the sta in order to update seq numbers and re-enqueue skbs */ 1600 sta = rcu_dereference_protected( 1601 mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id], 1602 lockdep_is_held(&mvm->mutex)); 1603 1604 if (IS_ERR_OR_NULL(sta)) { 1605 sta = NULL; 1606 goto out; 1607 } 1608 1609 if (mvm->d0i3_offloading && qos_seq) { 1610 /* update qos seq numbers if offloading was enabled */ 1611 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta); 1612 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1613 u16 seq = le16_to_cpu(qos_seq[i]); 1614 /* firmware stores last-used one, we store next one */ 1615 seq += 0x10; 1616 mvm_ap_sta->tid_data[i].seq_number = seq; 1617 } 1618 } 1619 out: 1620 /* re-enqueue (or drop) all packets */ 1621 while (!skb_queue_empty(&mvm->d0i3_tx)) { 1622 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx); 1623 1624 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta)) 1625 ieee80211_free_txskb(mvm->hw, skb); 1626 1627 /* if the skb_queue is not empty, we need to wake queues */ 1628 wake_queues = true; 1629 } 1630 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1631 wake_up(&mvm->d0i3_exit_waitq); 1632 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA; 1633 if (wake_queues) 1634 ieee80211_wake_queues(mvm->hw); 1635 1636 spin_unlock_bh(&mvm->d0i3_tx_lock); 1637 } 1638 1639 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk) 1640 { 1641 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work); 1642 struct iwl_mvm_d0i3_exit_work_iter_data iter_data = { 1643 .mvm = mvm, 1644 }; 1645 1646 struct iwl_wowlan_status *status; 1647 u32 wakeup_reasons = 0; 1648 __le16 *qos_seq = NULL; 1649 1650 mutex_lock(&mvm->mutex); 1651 1652 status = iwl_mvm_send_wowlan_get_status(mvm); 1653 if (IS_ERR_OR_NULL(status)) { 1654 /* set to NULL so we don't need to check before kfree'ing */ 1655 status = NULL; 1656 goto out; 1657 } 1658 1659 wakeup_reasons = le32_to_cpu(status->wakeup_reasons); 1660 qos_seq = status->qos_seq_ctr; 1661 1662 IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons); 1663 1664 iter_data.wakeup_reasons = wakeup_reasons; 1665 iter_data.status = status; 1666 ieee80211_iterate_active_interfaces(mvm->hw, 1667 IEEE80211_IFACE_ITER_NORMAL, 1668 iwl_mvm_d0i3_exit_work_iter, 1669 &iter_data); 1670 out: 1671 iwl_mvm_d0i3_enable_tx(mvm, qos_seq); 1672 1673 IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n", 1674 wakeup_reasons); 1675 1676 /* qos_seq might point inside resp_pkt, so free it only now */ 1677 kfree(status); 1678 1679 /* the FW might have updated the regdomain */ 1680 iwl_mvm_update_changed_regdom(mvm); 1681 1682 iwl_mvm_resume_tcm(mvm); 1683 iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK); 1684 mutex_unlock(&mvm->mutex); 1685 } 1686 1687 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm) 1688 { 1689 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE | 1690 CMD_WAKE_UP_TRANS; 1691 int ret; 1692 1693 IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n"); 1694 1695 if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR)) 1696 return -EINVAL; 1697 1698 mutex_lock(&mvm->d0i3_suspend_mutex); 1699 if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) { 1700 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n"); 1701 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags); 1702 mutex_unlock(&mvm->d0i3_suspend_mutex); 1703 return 0; 1704 } 1705 mutex_unlock(&mvm->d0i3_suspend_mutex); 1706 1707 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL); 1708 if (ret) 1709 goto out; 1710 1711 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1712 IEEE80211_IFACE_ITER_NORMAL, 1713 iwl_mvm_exit_d0i3_iterator, 1714 mvm); 1715 out: 1716 schedule_work(&mvm->d0i3_exit_work); 1717 return ret; 1718 } 1719 1720 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode) 1721 { 1722 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1723 1724 iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK); 1725 return _iwl_mvm_exit_d0i3(mvm); 1726 } 1727 1728 #define IWL_MVM_D0I3_OPS \ 1729 .enter_d0i3 = iwl_mvm_enter_d0i3, \ 1730 .exit_d0i3 = iwl_mvm_exit_d0i3, 1731 #else /* CONFIG_PM */ 1732 #define IWL_MVM_D0I3_OPS 1733 #endif /* CONFIG_PM */ 1734 1735 #define IWL_MVM_COMMON_OPS \ 1736 /* these could be differentiated */ \ 1737 .async_cb = iwl_mvm_async_cb, \ 1738 .queue_full = iwl_mvm_stop_sw_queue, \ 1739 .queue_not_full = iwl_mvm_wake_sw_queue, \ 1740 .hw_rf_kill = iwl_mvm_set_hw_rfkill_state, \ 1741 .free_skb = iwl_mvm_free_skb, \ 1742 .nic_error = iwl_mvm_nic_error, \ 1743 .cmd_queue_full = iwl_mvm_cmd_queue_full, \ 1744 .nic_config = iwl_mvm_nic_config, \ 1745 IWL_MVM_D0I3_OPS \ 1746 /* as we only register one, these MUST be common! */ \ 1747 .start = iwl_op_mode_mvm_start, \ 1748 .stop = iwl_op_mode_mvm_stop 1749 1750 static const struct iwl_op_mode_ops iwl_mvm_ops = { 1751 IWL_MVM_COMMON_OPS, 1752 .rx = iwl_mvm_rx, 1753 }; 1754 1755 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode, 1756 struct napi_struct *napi, 1757 struct iwl_rx_cmd_buffer *rxb, 1758 unsigned int queue) 1759 { 1760 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1761 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1762 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); 1763 1764 if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))) 1765 iwl_mvm_rx_frame_release(mvm, napi, rxb, queue); 1766 else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP, 1767 RX_QUEUES_NOTIFICATION))) 1768 iwl_mvm_rx_queue_notif(mvm, rxb, queue); 1769 else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))) 1770 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue); 1771 } 1772 1773 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = { 1774 IWL_MVM_COMMON_OPS, 1775 .rx = iwl_mvm_rx_mq, 1776 .rx_rss = iwl_mvm_rx_mq_rss, 1777 }; 1778