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 int iwl_mvm_fwrt_send_hcmd(void *ctx, struct iwl_host_cmd *host_cmd) 569 { 570 struct iwl_mvm *mvm = (struct iwl_mvm *)ctx; 571 int ret; 572 573 mutex_lock(&mvm->mutex); 574 ret = iwl_mvm_send_cmd(mvm, host_cmd); 575 mutex_unlock(&mvm->mutex); 576 577 return ret; 578 } 579 580 static const struct iwl_fw_runtime_ops iwl_mvm_fwrt_ops = { 581 .dump_start = iwl_mvm_fwrt_dump_start, 582 .dump_end = iwl_mvm_fwrt_dump_end, 583 .fw_running = iwl_mvm_fwrt_fw_running, 584 .send_hcmd = iwl_mvm_fwrt_send_hcmd, 585 }; 586 587 static struct iwl_op_mode * 588 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg, 589 const struct iwl_fw *fw, struct dentry *dbgfs_dir) 590 { 591 struct ieee80211_hw *hw; 592 struct iwl_op_mode *op_mode; 593 struct iwl_mvm *mvm; 594 struct iwl_trans_config trans_cfg = {}; 595 static const u8 no_reclaim_cmds[] = { 596 TX_CMD, 597 }; 598 int err, scan_size; 599 u32 min_backoff; 600 enum iwl_amsdu_size rb_size_default; 601 602 /* 603 * We use IWL_MVM_STATION_COUNT to check the validity of the station 604 * index all over the driver - check that its value corresponds to the 605 * array size. 606 */ 607 BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT); 608 609 /******************************** 610 * 1. Allocating and configuring HW data 611 ********************************/ 612 hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) + 613 sizeof(struct iwl_mvm), 614 &iwl_mvm_hw_ops); 615 if (!hw) 616 return NULL; 617 618 if (cfg->max_rx_agg_size) 619 hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size; 620 else 621 hw->max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF; 622 623 if (cfg->max_tx_agg_size) 624 hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size; 625 else 626 hw->max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF; 627 628 op_mode = hw->priv; 629 630 mvm = IWL_OP_MODE_GET_MVM(op_mode); 631 mvm->dev = trans->dev; 632 mvm->trans = trans; 633 mvm->cfg = cfg; 634 mvm->fw = fw; 635 mvm->hw = hw; 636 637 iwl_fw_runtime_init(&mvm->fwrt, trans, fw, &iwl_mvm_fwrt_ops, mvm, 638 dbgfs_dir); 639 640 mvm->init_status = 0; 641 642 if (iwl_mvm_has_new_rx_api(mvm)) { 643 op_mode->ops = &iwl_mvm_ops_mq; 644 trans->rx_mpdu_cmd_hdr_size = 645 (trans->cfg->device_family >= 646 IWL_DEVICE_FAMILY_22560) ? 647 sizeof(struct iwl_rx_mpdu_desc) : 648 IWL_RX_DESC_SIZE_V1; 649 } else { 650 op_mode->ops = &iwl_mvm_ops; 651 trans->rx_mpdu_cmd_hdr_size = 652 sizeof(struct iwl_rx_mpdu_res_start); 653 654 if (WARN_ON(trans->num_rx_queues > 1)) 655 goto out_free; 656 } 657 658 mvm->fw_restart = iwlwifi_mod_params.fw_restart ? -1 : 0; 659 660 mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE; 661 mvm->snif_queue = IWL_MVM_DQA_INJECT_MONITOR_QUEUE; 662 mvm->probe_queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE; 663 mvm->p2p_dev_queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE; 664 665 mvm->sf_state = SF_UNINIT; 666 if (iwl_mvm_has_unified_ucode(mvm)) 667 iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_REGULAR); 668 else 669 iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_INIT); 670 mvm->drop_bcn_ap_mode = true; 671 672 mutex_init(&mvm->mutex); 673 mutex_init(&mvm->d0i3_suspend_mutex); 674 spin_lock_init(&mvm->async_handlers_lock); 675 INIT_LIST_HEAD(&mvm->time_event_list); 676 INIT_LIST_HEAD(&mvm->aux_roc_te_list); 677 INIT_LIST_HEAD(&mvm->async_handlers_list); 678 spin_lock_init(&mvm->time_event_lock); 679 680 INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk); 681 INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk); 682 #ifdef CONFIG_PM 683 INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work); 684 #endif 685 INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work); 686 INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk); 687 INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk); 688 689 spin_lock_init(&mvm->d0i3_tx_lock); 690 spin_lock_init(&mvm->refs_lock); 691 skb_queue_head_init(&mvm->d0i3_tx); 692 init_waitqueue_head(&mvm->d0i3_exit_waitq); 693 init_waitqueue_head(&mvm->rx_sync_waitq); 694 695 atomic_set(&mvm->queue_sync_counter, 0); 696 697 SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev); 698 699 spin_lock_init(&mvm->tcm.lock); 700 INIT_DELAYED_WORK(&mvm->tcm.work, iwl_mvm_tcm_work); 701 mvm->tcm.ts = jiffies; 702 mvm->tcm.ll_ts = jiffies; 703 mvm->tcm.uapsd_nonagg_ts = jiffies; 704 705 INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork); 706 707 /* 708 * Populate the state variables that the transport layer needs 709 * to know about. 710 */ 711 trans_cfg.op_mode = op_mode; 712 trans_cfg.no_reclaim_cmds = no_reclaim_cmds; 713 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds); 714 715 if (mvm->trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560) 716 rb_size_default = IWL_AMSDU_2K; 717 else 718 rb_size_default = IWL_AMSDU_4K; 719 720 switch (iwlwifi_mod_params.amsdu_size) { 721 case IWL_AMSDU_DEF: 722 trans_cfg.rx_buf_size = rb_size_default; 723 break; 724 case IWL_AMSDU_4K: 725 trans_cfg.rx_buf_size = IWL_AMSDU_4K; 726 break; 727 case IWL_AMSDU_8K: 728 trans_cfg.rx_buf_size = IWL_AMSDU_8K; 729 break; 730 case IWL_AMSDU_12K: 731 trans_cfg.rx_buf_size = IWL_AMSDU_12K; 732 break; 733 default: 734 pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME, 735 iwlwifi_mod_params.amsdu_size); 736 trans_cfg.rx_buf_size = rb_size_default; 737 } 738 739 trans->wide_cmd_header = true; 740 trans_cfg.bc_table_dword = 741 mvm->trans->cfg->device_family < IWL_DEVICE_FAMILY_22560; 742 743 trans_cfg.command_groups = iwl_mvm_groups; 744 trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups); 745 746 trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE; 747 trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD; 748 trans_cfg.scd_set_active = true; 749 750 trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info, 751 driver_data[2]); 752 753 trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD; 754 755 /* Set a short watchdog for the command queue */ 756 trans_cfg.cmd_q_wdg_timeout = 757 iwl_mvm_get_wd_timeout(mvm, NULL, false, true); 758 759 snprintf(mvm->hw->wiphy->fw_version, 760 sizeof(mvm->hw->wiphy->fw_version), 761 "%s", fw->fw_version); 762 763 /* Configure transport layer */ 764 iwl_trans_configure(mvm->trans, &trans_cfg); 765 766 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD; 767 trans->dbg_dest_tlv = mvm->fw->dbg.dest_tlv; 768 trans->dbg_n_dest_reg = mvm->fw->dbg.n_dest_reg; 769 memcpy(trans->dbg_conf_tlv, mvm->fw->dbg.conf_tlv, 770 sizeof(trans->dbg_conf_tlv)); 771 trans->dbg_trigger_tlv = mvm->fw->dbg.trigger_tlv; 772 773 trans->iml = mvm->fw->iml; 774 trans->iml_len = mvm->fw->iml_len; 775 776 /* set up notification wait support */ 777 iwl_notification_wait_init(&mvm->notif_wait); 778 779 /* Init phy db */ 780 mvm->phy_db = iwl_phy_db_init(trans); 781 if (!mvm->phy_db) { 782 IWL_ERR(mvm, "Cannot init phy_db\n"); 783 goto out_free; 784 } 785 786 IWL_INFO(mvm, "Detected %s, REV=0x%X\n", 787 mvm->cfg->name, mvm->trans->hw_rev); 788 789 if (iwlwifi_mod_params.nvm_file) 790 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file; 791 else 792 IWL_DEBUG_EEPROM(mvm->trans->dev, 793 "working without external nvm file\n"); 794 795 err = iwl_trans_start_hw(mvm->trans); 796 if (err) 797 goto out_free; 798 799 mutex_lock(&mvm->mutex); 800 iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE); 801 err = iwl_run_init_mvm_ucode(mvm, true); 802 if (test_bit(IWL_FWRT_STATUS_WAIT_ALIVE, &mvm->fwrt.status)) 803 iwl_fw_alive_error_dump(&mvm->fwrt); 804 if (!iwlmvm_mod_params.init_dbg || !err) 805 iwl_mvm_stop_device(mvm); 806 iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE); 807 mutex_unlock(&mvm->mutex); 808 if (err < 0) { 809 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err); 810 goto out_free; 811 } 812 813 scan_size = iwl_mvm_scan_size(mvm); 814 815 mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL); 816 if (!mvm->scan_cmd) 817 goto out_free; 818 819 /* Set EBS as successful as long as not stated otherwise by the FW. */ 820 mvm->last_ebs_successful = true; 821 822 err = iwl_mvm_mac_setup_register(mvm); 823 if (err) 824 goto out_free; 825 mvm->hw_registered = true; 826 827 min_backoff = iwl_mvm_min_backoff(mvm); 828 iwl_mvm_thermal_initialize(mvm, min_backoff); 829 830 err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir); 831 if (err) 832 goto out_unregister; 833 834 if (!iwl_mvm_has_new_rx_stats_api(mvm)) 835 memset(&mvm->rx_stats_v3, 0, 836 sizeof(struct mvm_statistics_rx_v3)); 837 else 838 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx)); 839 840 /* The transport always starts with a taken reference, we can 841 * release it now if d0i3 is supported */ 842 if (iwl_mvm_is_d0i3_supported(mvm)) 843 iwl_trans_unref(mvm->trans); 844 845 iwl_mvm_tof_init(mvm); 846 847 iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx); 848 849 return op_mode; 850 851 out_unregister: 852 if (iwlmvm_mod_params.init_dbg) 853 return op_mode; 854 855 ieee80211_unregister_hw(mvm->hw); 856 mvm->hw_registered = false; 857 iwl_mvm_leds_exit(mvm); 858 iwl_mvm_thermal_exit(mvm); 859 out_free: 860 iwl_fw_flush_dump(&mvm->fwrt); 861 iwl_fw_runtime_free(&mvm->fwrt); 862 863 if (iwlmvm_mod_params.init_dbg) 864 return op_mode; 865 iwl_phy_db_free(mvm->phy_db); 866 kfree(mvm->scan_cmd); 867 iwl_trans_op_mode_leave(trans); 868 869 ieee80211_free_hw(mvm->hw); 870 return NULL; 871 } 872 873 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode) 874 { 875 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 876 int i; 877 878 /* If d0i3 is supported, we have released the reference that 879 * the transport started with, so we should take it back now 880 * that we are leaving. 881 */ 882 if (iwl_mvm_is_d0i3_supported(mvm)) 883 iwl_trans_ref(mvm->trans); 884 885 iwl_mvm_leds_exit(mvm); 886 887 iwl_mvm_thermal_exit(mvm); 888 889 if (mvm->init_status & IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE) { 890 ieee80211_unregister_hw(mvm->hw); 891 mvm->init_status &= ~IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE; 892 } 893 894 kfree(mvm->scan_cmd); 895 kfree(mvm->mcast_filter_cmd); 896 mvm->mcast_filter_cmd = NULL; 897 898 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS) 899 kfree(mvm->d3_resume_sram); 900 #endif 901 iwl_trans_op_mode_leave(mvm->trans); 902 903 iwl_phy_db_free(mvm->phy_db); 904 mvm->phy_db = NULL; 905 906 kfree(mvm->nvm_data); 907 for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++) 908 kfree(mvm->nvm_sections[i].data); 909 910 cancel_delayed_work_sync(&mvm->tcm.work); 911 912 iwl_mvm_tof_clean(mvm); 913 914 iwl_fw_runtime_free(&mvm->fwrt); 915 mutex_destroy(&mvm->mutex); 916 mutex_destroy(&mvm->d0i3_suspend_mutex); 917 918 ieee80211_free_hw(mvm->hw); 919 } 920 921 struct iwl_async_handler_entry { 922 struct list_head list; 923 struct iwl_rx_cmd_buffer rxb; 924 enum iwl_rx_handler_context context; 925 void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb); 926 }; 927 928 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm) 929 { 930 struct iwl_async_handler_entry *entry, *tmp; 931 932 spin_lock_bh(&mvm->async_handlers_lock); 933 list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) { 934 iwl_free_rxb(&entry->rxb); 935 list_del(&entry->list); 936 kfree(entry); 937 } 938 spin_unlock_bh(&mvm->async_handlers_lock); 939 } 940 941 static void iwl_mvm_async_handlers_wk(struct work_struct *wk) 942 { 943 struct iwl_mvm *mvm = 944 container_of(wk, struct iwl_mvm, async_handlers_wk); 945 struct iwl_async_handler_entry *entry, *tmp; 946 LIST_HEAD(local_list); 947 948 /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */ 949 950 /* 951 * Sync with Rx path with a lock. Remove all the entries from this list, 952 * add them to a local one (lock free), and then handle them. 953 */ 954 spin_lock_bh(&mvm->async_handlers_lock); 955 list_splice_init(&mvm->async_handlers_list, &local_list); 956 spin_unlock_bh(&mvm->async_handlers_lock); 957 958 list_for_each_entry_safe(entry, tmp, &local_list, list) { 959 if (entry->context == RX_HANDLER_ASYNC_LOCKED) 960 mutex_lock(&mvm->mutex); 961 entry->fn(mvm, &entry->rxb); 962 iwl_free_rxb(&entry->rxb); 963 list_del(&entry->list); 964 if (entry->context == RX_HANDLER_ASYNC_LOCKED) 965 mutex_unlock(&mvm->mutex); 966 kfree(entry); 967 } 968 } 969 970 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm, 971 struct iwl_rx_packet *pkt) 972 { 973 struct iwl_fw_dbg_trigger_tlv *trig; 974 struct iwl_fw_dbg_trigger_cmd *cmds_trig; 975 int i; 976 977 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, NULL, 978 FW_DBG_TRIGGER_FW_NOTIF); 979 if (!trig) 980 return; 981 982 cmds_trig = (void *)trig->data; 983 984 for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) { 985 /* don't collect on CMD 0 */ 986 if (!cmds_trig->cmds[i].cmd_id) 987 break; 988 989 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd || 990 cmds_trig->cmds[i].group_id != pkt->hdr.group_id) 991 continue; 992 993 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 994 "CMD 0x%02x.%02x received", 995 pkt->hdr.group_id, pkt->hdr.cmd); 996 break; 997 } 998 } 999 1000 static void iwl_mvm_rx_common(struct iwl_mvm *mvm, 1001 struct iwl_rx_cmd_buffer *rxb, 1002 struct iwl_rx_packet *pkt) 1003 { 1004 int i; 1005 1006 iwl_mvm_rx_check_trigger(mvm, pkt); 1007 1008 /* 1009 * Do the notification wait before RX handlers so 1010 * even if the RX handler consumes the RXB we have 1011 * access to it in the notification wait entry. 1012 */ 1013 iwl_notification_wait_notify(&mvm->notif_wait, pkt); 1014 1015 for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) { 1016 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i]; 1017 struct iwl_async_handler_entry *entry; 1018 1019 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) 1020 continue; 1021 1022 if (rx_h->context == RX_HANDLER_SYNC) { 1023 rx_h->fn(mvm, rxb); 1024 return; 1025 } 1026 1027 entry = kzalloc(sizeof(*entry), GFP_ATOMIC); 1028 /* we can't do much... */ 1029 if (!entry) 1030 return; 1031 1032 entry->rxb._page = rxb_steal_page(rxb); 1033 entry->rxb._offset = rxb->_offset; 1034 entry->rxb._rx_page_order = rxb->_rx_page_order; 1035 entry->fn = rx_h->fn; 1036 entry->context = rx_h->context; 1037 spin_lock(&mvm->async_handlers_lock); 1038 list_add_tail(&entry->list, &mvm->async_handlers_list); 1039 spin_unlock(&mvm->async_handlers_lock); 1040 schedule_work(&mvm->async_handlers_wk); 1041 break; 1042 } 1043 } 1044 1045 static void iwl_mvm_rx(struct iwl_op_mode *op_mode, 1046 struct napi_struct *napi, 1047 struct iwl_rx_cmd_buffer *rxb) 1048 { 1049 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1050 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1051 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); 1052 1053 if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))) 1054 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb); 1055 else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD)) 1056 iwl_mvm_rx_rx_phy_cmd(mvm, rxb); 1057 else 1058 iwl_mvm_rx_common(mvm, rxb, pkt); 1059 } 1060 1061 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode, 1062 struct napi_struct *napi, 1063 struct iwl_rx_cmd_buffer *rxb) 1064 { 1065 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1066 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1067 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); 1068 1069 if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))) 1070 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0); 1071 else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP, 1072 RX_QUEUES_NOTIFICATION))) 1073 iwl_mvm_rx_queue_notif(mvm, rxb, 0); 1074 else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)) 1075 iwl_mvm_rx_frame_release(mvm, napi, rxb, 0); 1076 else 1077 iwl_mvm_rx_common(mvm, rxb, pkt); 1078 } 1079 1080 void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq) 1081 { 1082 int q; 1083 1084 if (WARN_ON_ONCE(!mq)) 1085 return; 1086 1087 for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) { 1088 if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) { 1089 IWL_DEBUG_TX_QUEUES(mvm, 1090 "mac80211 %d already stopped\n", q); 1091 continue; 1092 } 1093 1094 ieee80211_stop_queue(mvm->hw, q); 1095 } 1096 } 1097 1098 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode, 1099 const struct iwl_device_cmd *cmd) 1100 { 1101 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1102 1103 /* 1104 * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA 1105 * commands that need to block the Tx queues. 1106 */ 1107 iwl_trans_block_txq_ptrs(mvm->trans, false); 1108 } 1109 1110 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue) 1111 { 1112 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1113 unsigned long mq = mvm->hw_queue_to_mac80211[hw_queue]; 1114 1115 iwl_mvm_stop_mac_queues(mvm, mq); 1116 } 1117 1118 void iwl_mvm_start_mac_queues(struct iwl_mvm *mvm, unsigned long mq) 1119 { 1120 int q; 1121 1122 if (WARN_ON_ONCE(!mq)) 1123 return; 1124 1125 for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) { 1126 if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) { 1127 IWL_DEBUG_TX_QUEUES(mvm, 1128 "mac80211 %d still stopped\n", q); 1129 continue; 1130 } 1131 1132 ieee80211_wake_queue(mvm->hw, q); 1133 } 1134 } 1135 1136 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue) 1137 { 1138 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1139 unsigned long mq = mvm->hw_queue_to_mac80211[hw_queue]; 1140 1141 iwl_mvm_start_mac_queues(mvm, mq); 1142 } 1143 1144 static void iwl_mvm_set_rfkill_state(struct iwl_mvm *mvm) 1145 { 1146 bool state = iwl_mvm_is_radio_killed(mvm); 1147 1148 if (state) 1149 wake_up(&mvm->rx_sync_waitq); 1150 1151 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, state); 1152 } 1153 1154 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state) 1155 { 1156 if (state) 1157 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); 1158 else 1159 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); 1160 1161 iwl_mvm_set_rfkill_state(mvm); 1162 } 1163 1164 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state) 1165 { 1166 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1167 bool calibrating = READ_ONCE(mvm->calibrating); 1168 1169 if (state) 1170 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); 1171 else 1172 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); 1173 1174 iwl_mvm_set_rfkill_state(mvm); 1175 1176 /* iwl_run_init_mvm_ucode is waiting for results, abort it */ 1177 if (calibrating) 1178 iwl_abort_notification_waits(&mvm->notif_wait); 1179 1180 /* 1181 * Stop the device if we run OPERATIONAL firmware or if we are in the 1182 * middle of the calibrations. 1183 */ 1184 return state && (mvm->fwrt.cur_fw_img != IWL_UCODE_INIT || calibrating); 1185 } 1186 1187 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb) 1188 { 1189 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1190 struct ieee80211_tx_info *info; 1191 1192 info = IEEE80211_SKB_CB(skb); 1193 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]); 1194 ieee80211_free_txskb(mvm->hw, skb); 1195 } 1196 1197 struct iwl_mvm_reprobe { 1198 struct device *dev; 1199 struct work_struct work; 1200 }; 1201 1202 static void iwl_mvm_reprobe_wk(struct work_struct *wk) 1203 { 1204 struct iwl_mvm_reprobe *reprobe; 1205 1206 reprobe = container_of(wk, struct iwl_mvm_reprobe, work); 1207 if (device_reprobe(reprobe->dev)) 1208 dev_err(reprobe->dev, "reprobe failed!\n"); 1209 kfree(reprobe); 1210 module_put(THIS_MODULE); 1211 } 1212 1213 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error) 1214 { 1215 iwl_abort_notification_waits(&mvm->notif_wait); 1216 1217 /* 1218 * This is a bit racy, but worst case we tell mac80211 about 1219 * a stopped/aborted scan when that was already done which 1220 * is not a problem. It is necessary to abort any os scan 1221 * here because mac80211 requires having the scan cleared 1222 * before restarting. 1223 * We'll reset the scan_status to NONE in restart cleanup in 1224 * the next start() call from mac80211. If restart isn't called 1225 * (no fw restart) scan status will stay busy. 1226 */ 1227 iwl_mvm_report_scan_aborted(mvm); 1228 1229 /* 1230 * If we're restarting already, don't cycle restarts. 1231 * If INIT fw asserted, it will likely fail again. 1232 * If WoWLAN fw asserted, don't restart either, mac80211 1233 * can't recover this since we're already half suspended. 1234 */ 1235 if (!mvm->fw_restart && fw_error) { 1236 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert, 1237 false, 0); 1238 } else if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1239 struct iwl_mvm_reprobe *reprobe; 1240 1241 IWL_ERR(mvm, 1242 "Firmware error during reconfiguration - reprobe!\n"); 1243 1244 /* 1245 * get a module reference to avoid doing this while unloading 1246 * anyway and to avoid scheduling a work with code that's 1247 * being removed. 1248 */ 1249 if (!try_module_get(THIS_MODULE)) { 1250 IWL_ERR(mvm, "Module is being unloaded - abort\n"); 1251 return; 1252 } 1253 1254 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC); 1255 if (!reprobe) { 1256 module_put(THIS_MODULE); 1257 return; 1258 } 1259 reprobe->dev = mvm->trans->dev; 1260 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk); 1261 schedule_work(&reprobe->work); 1262 } else if (mvm->fwrt.cur_fw_img == IWL_UCODE_REGULAR && 1263 mvm->hw_registered && 1264 !test_bit(STATUS_TRANS_DEAD, &mvm->trans->status)) { 1265 /* don't let the transport/FW power down */ 1266 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); 1267 1268 if (fw_error && mvm->fw_restart > 0) 1269 mvm->fw_restart--; 1270 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); 1271 ieee80211_restart_hw(mvm->hw); 1272 } 1273 } 1274 1275 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode) 1276 { 1277 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1278 1279 if (!test_bit(STATUS_TRANS_DEAD, &mvm->trans->status)) 1280 iwl_mvm_dump_nic_error_log(mvm); 1281 1282 iwl_mvm_nic_restart(mvm, true); 1283 } 1284 1285 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode) 1286 { 1287 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1288 1289 WARN_ON(1); 1290 iwl_mvm_nic_restart(mvm, true); 1291 } 1292 1293 #ifdef CONFIG_PM 1294 struct iwl_d0i3_iter_data { 1295 struct iwl_mvm *mvm; 1296 struct ieee80211_vif *connected_vif; 1297 u8 ap_sta_id; 1298 u8 vif_count; 1299 u8 offloading_tid; 1300 bool disable_offloading; 1301 }; 1302 1303 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm, 1304 struct ieee80211_vif *vif, 1305 struct iwl_d0i3_iter_data *iter_data) 1306 { 1307 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1308 struct iwl_mvm_sta *mvmsta; 1309 u32 available_tids = 0; 1310 u8 tid; 1311 1312 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION || 1313 mvmvif->ap_sta_id == IWL_MVM_INVALID_STA)) 1314 return false; 1315 1316 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); 1317 if (!mvmsta) 1318 return false; 1319 1320 spin_lock_bh(&mvmsta->lock); 1321 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1322 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 1323 1324 /* 1325 * in case of pending tx packets, don't use this tid 1326 * for offloading in order to prevent reuse of the same 1327 * qos seq counters. 1328 */ 1329 if (iwl_mvm_tid_queued(mvm, tid_data)) 1330 continue; 1331 1332 if (tid_data->state != IWL_AGG_OFF) 1333 continue; 1334 1335 available_tids |= BIT(tid); 1336 } 1337 spin_unlock_bh(&mvmsta->lock); 1338 1339 /* 1340 * disallow protocol offloading if we have no available tid 1341 * (with no pending frames and no active aggregation, 1342 * as we don't handle "holes" properly - the scheduler needs the 1343 * frame's seq number and TFD index to match) 1344 */ 1345 if (!available_tids) 1346 return true; 1347 1348 /* for simplicity, just use the first available tid */ 1349 iter_data->offloading_tid = ffs(available_tids) - 1; 1350 return false; 1351 } 1352 1353 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac, 1354 struct ieee80211_vif *vif) 1355 { 1356 struct iwl_d0i3_iter_data *data = _data; 1357 struct iwl_mvm *mvm = data->mvm; 1358 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1359 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; 1360 1361 IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr); 1362 if (vif->type != NL80211_IFTYPE_STATION || 1363 !vif->bss_conf.assoc) 1364 return; 1365 1366 /* 1367 * in case of pending tx packets or active aggregations, 1368 * avoid offloading features in order to prevent reuse of 1369 * the same qos seq counters. 1370 */ 1371 if (iwl_mvm_disallow_offloading(mvm, vif, data)) 1372 data->disable_offloading = true; 1373 1374 iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags); 1375 iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading, 1376 false, flags); 1377 1378 /* 1379 * on init/association, mvm already configures POWER_TABLE_CMD 1380 * and REPLY_MCAST_FILTER_CMD, so currently don't 1381 * reconfigure them (we might want to use different 1382 * params later on, though). 1383 */ 1384 data->ap_sta_id = mvmvif->ap_sta_id; 1385 data->vif_count++; 1386 1387 /* 1388 * no new commands can be sent at this stage, so it's safe 1389 * to save the vif pointer during d0i3 entrance. 1390 */ 1391 data->connected_vif = vif; 1392 } 1393 1394 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm, 1395 struct iwl_wowlan_config_cmd *cmd, 1396 struct iwl_d0i3_iter_data *iter_data) 1397 { 1398 struct ieee80211_sta *ap_sta; 1399 struct iwl_mvm_sta *mvm_ap_sta; 1400 1401 if (iter_data->ap_sta_id == IWL_MVM_INVALID_STA) 1402 return; 1403 1404 rcu_read_lock(); 1405 1406 ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]); 1407 if (IS_ERR_OR_NULL(ap_sta)) 1408 goto out; 1409 1410 mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta); 1411 cmd->is_11n_connection = ap_sta->ht_cap.ht_supported; 1412 cmd->offloading_tid = iter_data->offloading_tid; 1413 cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING | 1414 ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON; 1415 /* 1416 * The d0i3 uCode takes care of the nonqos counters, 1417 * so configure only the qos seq ones. 1418 */ 1419 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd); 1420 out: 1421 rcu_read_unlock(); 1422 } 1423 1424 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode) 1425 { 1426 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1427 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; 1428 int ret; 1429 struct iwl_d0i3_iter_data d0i3_iter_data = { 1430 .mvm = mvm, 1431 }; 1432 struct iwl_wowlan_config_cmd wowlan_config_cmd = { 1433 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME | 1434 IWL_WOWLAN_WAKEUP_BEACON_MISS | 1435 IWL_WOWLAN_WAKEUP_LINK_CHANGE), 1436 }; 1437 struct iwl_d3_manager_config d3_cfg_cmd = { 1438 .min_sleep_time = cpu_to_le32(1000), 1439 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR), 1440 }; 1441 1442 IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n"); 1443 1444 if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR)) 1445 return -EINVAL; 1446 1447 set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1448 1449 /* 1450 * iwl_mvm_ref_sync takes a reference before checking the flag. 1451 * so by checking there is no held reference we prevent a state 1452 * in which iwl_mvm_ref_sync continues successfully while we 1453 * configure the firmware to enter d0i3 1454 */ 1455 if (iwl_mvm_ref_taken(mvm)) { 1456 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n"); 1457 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1458 wake_up(&mvm->d0i3_exit_waitq); 1459 return 1; 1460 } 1461 1462 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1463 IEEE80211_IFACE_ITER_NORMAL, 1464 iwl_mvm_enter_d0i3_iterator, 1465 &d0i3_iter_data); 1466 if (d0i3_iter_data.vif_count == 1) { 1467 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id; 1468 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading; 1469 } else { 1470 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1); 1471 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA; 1472 mvm->d0i3_offloading = false; 1473 } 1474 1475 iwl_mvm_pause_tcm(mvm, true); 1476 /* make sure we have no running tx while configuring the seqno */ 1477 synchronize_net(); 1478 1479 /* Flush the hw queues, in case something got queued during entry */ 1480 /* TODO new tx api */ 1481 if (iwl_mvm_has_new_tx_api(mvm)) { 1482 WARN_ONCE(1, "d0i3: Need to implement flush TX queue\n"); 1483 } else { 1484 ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm), 1485 flags); 1486 if (ret) 1487 return ret; 1488 } 1489 1490 /* configure wowlan configuration only if needed */ 1491 if (mvm->d0i3_ap_sta_id != IWL_MVM_INVALID_STA) { 1492 /* wake on beacons only if beacon storing isn't supported */ 1493 if (!fw_has_capa(&mvm->fw->ucode_capa, 1494 IWL_UCODE_TLV_CAPA_BEACON_STORING)) 1495 wowlan_config_cmd.wakeup_filter |= 1496 cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING); 1497 1498 iwl_mvm_wowlan_config_key_params(mvm, 1499 d0i3_iter_data.connected_vif, 1500 true, flags); 1501 1502 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd, 1503 &d0i3_iter_data); 1504 1505 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags, 1506 sizeof(wowlan_config_cmd), 1507 &wowlan_config_cmd); 1508 if (ret) 1509 return ret; 1510 } 1511 1512 return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD, 1513 flags | CMD_MAKE_TRANS_IDLE, 1514 sizeof(d3_cfg_cmd), &d3_cfg_cmd); 1515 } 1516 1517 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac, 1518 struct ieee80211_vif *vif) 1519 { 1520 struct iwl_mvm *mvm = _data; 1521 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO; 1522 1523 IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr); 1524 if (vif->type != NL80211_IFTYPE_STATION || 1525 !vif->bss_conf.assoc) 1526 return; 1527 1528 iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags); 1529 } 1530 1531 struct iwl_mvm_d0i3_exit_work_iter_data { 1532 struct iwl_mvm *mvm; 1533 struct iwl_wowlan_status *status; 1534 u32 wakeup_reasons; 1535 }; 1536 1537 static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac, 1538 struct ieee80211_vif *vif) 1539 { 1540 struct iwl_mvm_d0i3_exit_work_iter_data *data = _data; 1541 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1542 u32 reasons = data->wakeup_reasons; 1543 1544 /* consider only the relevant station interface */ 1545 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc || 1546 data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id) 1547 return; 1548 1549 if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH) 1550 iwl_mvm_connection_loss(data->mvm, vif, "D0i3"); 1551 else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON) 1552 ieee80211_beacon_loss(vif); 1553 else 1554 iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status); 1555 } 1556 1557 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq) 1558 { 1559 struct ieee80211_sta *sta = NULL; 1560 struct iwl_mvm_sta *mvm_ap_sta; 1561 int i; 1562 bool wake_queues = false; 1563 1564 lockdep_assert_held(&mvm->mutex); 1565 1566 spin_lock_bh(&mvm->d0i3_tx_lock); 1567 1568 if (mvm->d0i3_ap_sta_id == IWL_MVM_INVALID_STA) 1569 goto out; 1570 1571 IWL_DEBUG_RPM(mvm, "re-enqueue packets\n"); 1572 1573 /* get the sta in order to update seq numbers and re-enqueue skbs */ 1574 sta = rcu_dereference_protected( 1575 mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id], 1576 lockdep_is_held(&mvm->mutex)); 1577 1578 if (IS_ERR_OR_NULL(sta)) { 1579 sta = NULL; 1580 goto out; 1581 } 1582 1583 if (mvm->d0i3_offloading && qos_seq) { 1584 /* update qos seq numbers if offloading was enabled */ 1585 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta); 1586 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1587 u16 seq = le16_to_cpu(qos_seq[i]); 1588 /* firmware stores last-used one, we store next one */ 1589 seq += 0x10; 1590 mvm_ap_sta->tid_data[i].seq_number = seq; 1591 } 1592 } 1593 out: 1594 /* re-enqueue (or drop) all packets */ 1595 while (!skb_queue_empty(&mvm->d0i3_tx)) { 1596 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx); 1597 1598 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta)) 1599 ieee80211_free_txskb(mvm->hw, skb); 1600 1601 /* if the skb_queue is not empty, we need to wake queues */ 1602 wake_queues = true; 1603 } 1604 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1605 wake_up(&mvm->d0i3_exit_waitq); 1606 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA; 1607 if (wake_queues) 1608 ieee80211_wake_queues(mvm->hw); 1609 1610 spin_unlock_bh(&mvm->d0i3_tx_lock); 1611 } 1612 1613 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk) 1614 { 1615 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work); 1616 struct iwl_mvm_d0i3_exit_work_iter_data iter_data = { 1617 .mvm = mvm, 1618 }; 1619 1620 struct iwl_wowlan_status *status; 1621 u32 wakeup_reasons = 0; 1622 __le16 *qos_seq = NULL; 1623 1624 mutex_lock(&mvm->mutex); 1625 1626 status = iwl_mvm_send_wowlan_get_status(mvm); 1627 if (IS_ERR_OR_NULL(status)) { 1628 /* set to NULL so we don't need to check before kfree'ing */ 1629 status = NULL; 1630 goto out; 1631 } 1632 1633 wakeup_reasons = le32_to_cpu(status->wakeup_reasons); 1634 qos_seq = status->qos_seq_ctr; 1635 1636 IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons); 1637 1638 iter_data.wakeup_reasons = wakeup_reasons; 1639 iter_data.status = status; 1640 ieee80211_iterate_active_interfaces(mvm->hw, 1641 IEEE80211_IFACE_ITER_NORMAL, 1642 iwl_mvm_d0i3_exit_work_iter, 1643 &iter_data); 1644 out: 1645 iwl_mvm_d0i3_enable_tx(mvm, qos_seq); 1646 1647 IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n", 1648 wakeup_reasons); 1649 1650 /* qos_seq might point inside resp_pkt, so free it only now */ 1651 kfree(status); 1652 1653 /* the FW might have updated the regdomain */ 1654 iwl_mvm_update_changed_regdom(mvm); 1655 1656 iwl_mvm_resume_tcm(mvm); 1657 iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK); 1658 mutex_unlock(&mvm->mutex); 1659 } 1660 1661 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm) 1662 { 1663 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE | 1664 CMD_WAKE_UP_TRANS; 1665 int ret; 1666 1667 IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n"); 1668 1669 if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR)) 1670 return -EINVAL; 1671 1672 mutex_lock(&mvm->d0i3_suspend_mutex); 1673 if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) { 1674 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n"); 1675 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags); 1676 mutex_unlock(&mvm->d0i3_suspend_mutex); 1677 return 0; 1678 } 1679 mutex_unlock(&mvm->d0i3_suspend_mutex); 1680 1681 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL); 1682 if (ret) 1683 goto out; 1684 1685 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1686 IEEE80211_IFACE_ITER_NORMAL, 1687 iwl_mvm_exit_d0i3_iterator, 1688 mvm); 1689 out: 1690 schedule_work(&mvm->d0i3_exit_work); 1691 return ret; 1692 } 1693 1694 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode) 1695 { 1696 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1697 1698 iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK); 1699 return _iwl_mvm_exit_d0i3(mvm); 1700 } 1701 1702 #define IWL_MVM_D0I3_OPS \ 1703 .enter_d0i3 = iwl_mvm_enter_d0i3, \ 1704 .exit_d0i3 = iwl_mvm_exit_d0i3, 1705 #else /* CONFIG_PM */ 1706 #define IWL_MVM_D0I3_OPS 1707 #endif /* CONFIG_PM */ 1708 1709 #define IWL_MVM_COMMON_OPS \ 1710 /* these could be differentiated */ \ 1711 .async_cb = iwl_mvm_async_cb, \ 1712 .queue_full = iwl_mvm_stop_sw_queue, \ 1713 .queue_not_full = iwl_mvm_wake_sw_queue, \ 1714 .hw_rf_kill = iwl_mvm_set_hw_rfkill_state, \ 1715 .free_skb = iwl_mvm_free_skb, \ 1716 .nic_error = iwl_mvm_nic_error, \ 1717 .cmd_queue_full = iwl_mvm_cmd_queue_full, \ 1718 .nic_config = iwl_mvm_nic_config, \ 1719 IWL_MVM_D0I3_OPS \ 1720 /* as we only register one, these MUST be common! */ \ 1721 .start = iwl_op_mode_mvm_start, \ 1722 .stop = iwl_op_mode_mvm_stop 1723 1724 static const struct iwl_op_mode_ops iwl_mvm_ops = { 1725 IWL_MVM_COMMON_OPS, 1726 .rx = iwl_mvm_rx, 1727 }; 1728 1729 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode, 1730 struct napi_struct *napi, 1731 struct iwl_rx_cmd_buffer *rxb, 1732 unsigned int queue) 1733 { 1734 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1735 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1736 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); 1737 1738 if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))) 1739 iwl_mvm_rx_frame_release(mvm, napi, rxb, queue); 1740 else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP, 1741 RX_QUEUES_NOTIFICATION))) 1742 iwl_mvm_rx_queue_notif(mvm, rxb, queue); 1743 else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))) 1744 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue); 1745 } 1746 1747 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = { 1748 IWL_MVM_COMMON_OPS, 1749 .rx = iwl_mvm_rx_mq, 1750 .rx_rss = iwl_mvm_rx_mq_rss, 1751 }; 1752