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 spin_lock_init(&mvm->queue_info_lock); 680 681 INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk); 682 INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk); 683 #ifdef CONFIG_PM 684 INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work); 685 #endif 686 INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work); 687 INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk); 688 INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk); 689 690 spin_lock_init(&mvm->d0i3_tx_lock); 691 spin_lock_init(&mvm->refs_lock); 692 skb_queue_head_init(&mvm->d0i3_tx); 693 init_waitqueue_head(&mvm->d0i3_exit_waitq); 694 init_waitqueue_head(&mvm->rx_sync_waitq); 695 696 atomic_set(&mvm->queue_sync_counter, 0); 697 698 SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev); 699 700 spin_lock_init(&mvm->tcm.lock); 701 INIT_DELAYED_WORK(&mvm->tcm.work, iwl_mvm_tcm_work); 702 mvm->tcm.ts = jiffies; 703 mvm->tcm.ll_ts = jiffies; 704 mvm->tcm.uapsd_nonagg_ts = jiffies; 705 706 INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork); 707 708 /* 709 * Populate the state variables that the transport layer needs 710 * to know about. 711 */ 712 trans_cfg.op_mode = op_mode; 713 trans_cfg.no_reclaim_cmds = no_reclaim_cmds; 714 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds); 715 716 if (mvm->trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560) 717 rb_size_default = IWL_AMSDU_2K; 718 else 719 rb_size_default = IWL_AMSDU_4K; 720 721 switch (iwlwifi_mod_params.amsdu_size) { 722 case IWL_AMSDU_DEF: 723 trans_cfg.rx_buf_size = rb_size_default; 724 break; 725 case IWL_AMSDU_4K: 726 trans_cfg.rx_buf_size = IWL_AMSDU_4K; 727 break; 728 case IWL_AMSDU_8K: 729 trans_cfg.rx_buf_size = IWL_AMSDU_8K; 730 break; 731 case IWL_AMSDU_12K: 732 trans_cfg.rx_buf_size = IWL_AMSDU_12K; 733 break; 734 default: 735 pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME, 736 iwlwifi_mod_params.amsdu_size); 737 trans_cfg.rx_buf_size = rb_size_default; 738 } 739 740 trans->wide_cmd_header = true; 741 trans_cfg.bc_table_dword = 742 mvm->trans->cfg->device_family < IWL_DEVICE_FAMILY_22560; 743 744 trans_cfg.command_groups = iwl_mvm_groups; 745 trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups); 746 747 trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE; 748 trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD; 749 trans_cfg.scd_set_active = true; 750 751 trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info, 752 driver_data[2]); 753 754 trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD; 755 756 /* Set a short watchdog for the command queue */ 757 trans_cfg.cmd_q_wdg_timeout = 758 iwl_mvm_get_wd_timeout(mvm, NULL, false, true); 759 760 snprintf(mvm->hw->wiphy->fw_version, 761 sizeof(mvm->hw->wiphy->fw_version), 762 "%s", fw->fw_version); 763 764 /* Configure transport layer */ 765 iwl_trans_configure(mvm->trans, &trans_cfg); 766 767 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD; 768 trans->dbg_dest_tlv = mvm->fw->dbg.dest_tlv; 769 trans->dbg_n_dest_reg = mvm->fw->dbg.n_dest_reg; 770 memcpy(trans->dbg_conf_tlv, mvm->fw->dbg.conf_tlv, 771 sizeof(trans->dbg_conf_tlv)); 772 trans->dbg_trigger_tlv = mvm->fw->dbg.trigger_tlv; 773 trans->dbg_dump_mask = mvm->fw->dbg.dump_mask; 774 775 trans->iml = mvm->fw->iml; 776 trans->iml_len = mvm->fw->iml_len; 777 778 /* set up notification wait support */ 779 iwl_notification_wait_init(&mvm->notif_wait); 780 781 /* Init phy db */ 782 mvm->phy_db = iwl_phy_db_init(trans); 783 if (!mvm->phy_db) { 784 IWL_ERR(mvm, "Cannot init phy_db\n"); 785 goto out_free; 786 } 787 788 IWL_INFO(mvm, "Detected %s, REV=0x%X\n", 789 mvm->cfg->name, mvm->trans->hw_rev); 790 791 if (iwlwifi_mod_params.nvm_file) 792 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file; 793 else 794 IWL_DEBUG_EEPROM(mvm->trans->dev, 795 "working without external nvm file\n"); 796 797 err = iwl_trans_start_hw(mvm->trans); 798 if (err) 799 goto out_free; 800 801 mutex_lock(&mvm->mutex); 802 iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE); 803 err = iwl_run_init_mvm_ucode(mvm, true); 804 if (test_bit(IWL_FWRT_STATUS_WAIT_ALIVE, &mvm->fwrt.status)) 805 iwl_fw_alive_error_dump(&mvm->fwrt); 806 if (!iwlmvm_mod_params.init_dbg || !err) 807 iwl_mvm_stop_device(mvm); 808 iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE); 809 mutex_unlock(&mvm->mutex); 810 if (err < 0) { 811 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err); 812 goto out_free; 813 } 814 815 scan_size = iwl_mvm_scan_size(mvm); 816 817 mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL); 818 if (!mvm->scan_cmd) 819 goto out_free; 820 821 /* Set EBS as successful as long as not stated otherwise by the FW. */ 822 mvm->last_ebs_successful = true; 823 824 err = iwl_mvm_mac_setup_register(mvm); 825 if (err) 826 goto out_free; 827 mvm->hw_registered = true; 828 829 min_backoff = iwl_mvm_min_backoff(mvm); 830 iwl_mvm_thermal_initialize(mvm, min_backoff); 831 832 err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir); 833 if (err) 834 goto out_unregister; 835 836 if (!iwl_mvm_has_new_rx_stats_api(mvm)) 837 memset(&mvm->rx_stats_v3, 0, 838 sizeof(struct mvm_statistics_rx_v3)); 839 else 840 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx)); 841 842 /* The transport always starts with a taken reference, we can 843 * release it now if d0i3 is supported */ 844 if (iwl_mvm_is_d0i3_supported(mvm)) 845 iwl_trans_unref(mvm->trans); 846 847 iwl_mvm_tof_init(mvm); 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); 861 862 if (iwlmvm_mod_params.init_dbg) 863 return op_mode; 864 iwl_phy_db_free(mvm->phy_db); 865 kfree(mvm->scan_cmd); 866 iwl_trans_op_mode_leave(trans); 867 868 ieee80211_free_hw(mvm->hw); 869 return NULL; 870 } 871 872 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode) 873 { 874 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 875 int i; 876 877 /* If d0i3 is supported, we have released the reference that 878 * the transport started with, so we should take it back now 879 * that we are leaving. 880 */ 881 if (iwl_mvm_is_d0i3_supported(mvm)) 882 iwl_trans_ref(mvm->trans); 883 884 iwl_mvm_leds_exit(mvm); 885 886 iwl_mvm_thermal_exit(mvm); 887 888 if (mvm->init_status & IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE) { 889 ieee80211_unregister_hw(mvm->hw); 890 mvm->init_status &= ~IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE; 891 } 892 893 kfree(mvm->scan_cmd); 894 kfree(mvm->mcast_filter_cmd); 895 mvm->mcast_filter_cmd = NULL; 896 897 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS) 898 kfree(mvm->d3_resume_sram); 899 #endif 900 iwl_trans_op_mode_leave(mvm->trans); 901 902 iwl_phy_db_free(mvm->phy_db); 903 mvm->phy_db = NULL; 904 905 kfree(mvm->nvm_data); 906 for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++) 907 kfree(mvm->nvm_sections[i].data); 908 909 cancel_delayed_work_sync(&mvm->tcm.work); 910 911 iwl_mvm_tof_clean(mvm); 912 913 mutex_destroy(&mvm->mutex); 914 mutex_destroy(&mvm->d0i3_suspend_mutex); 915 916 ieee80211_free_hw(mvm->hw); 917 } 918 919 struct iwl_async_handler_entry { 920 struct list_head list; 921 struct iwl_rx_cmd_buffer rxb; 922 enum iwl_rx_handler_context context; 923 void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb); 924 }; 925 926 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm) 927 { 928 struct iwl_async_handler_entry *entry, *tmp; 929 930 spin_lock_bh(&mvm->async_handlers_lock); 931 list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) { 932 iwl_free_rxb(&entry->rxb); 933 list_del(&entry->list); 934 kfree(entry); 935 } 936 spin_unlock_bh(&mvm->async_handlers_lock); 937 } 938 939 static void iwl_mvm_async_handlers_wk(struct work_struct *wk) 940 { 941 struct iwl_mvm *mvm = 942 container_of(wk, struct iwl_mvm, async_handlers_wk); 943 struct iwl_async_handler_entry *entry, *tmp; 944 LIST_HEAD(local_list); 945 946 /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */ 947 948 /* 949 * Sync with Rx path with a lock. Remove all the entries from this list, 950 * add them to a local one (lock free), and then handle them. 951 */ 952 spin_lock_bh(&mvm->async_handlers_lock); 953 list_splice_init(&mvm->async_handlers_list, &local_list); 954 spin_unlock_bh(&mvm->async_handlers_lock); 955 956 list_for_each_entry_safe(entry, tmp, &local_list, list) { 957 if (entry->context == RX_HANDLER_ASYNC_LOCKED) 958 mutex_lock(&mvm->mutex); 959 entry->fn(mvm, &entry->rxb); 960 iwl_free_rxb(&entry->rxb); 961 list_del(&entry->list); 962 if (entry->context == RX_HANDLER_ASYNC_LOCKED) 963 mutex_unlock(&mvm->mutex); 964 kfree(entry); 965 } 966 } 967 968 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm, 969 struct iwl_rx_packet *pkt) 970 { 971 struct iwl_fw_dbg_trigger_tlv *trig; 972 struct iwl_fw_dbg_trigger_cmd *cmds_trig; 973 int i; 974 975 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, NULL, 976 FW_DBG_TRIGGER_FW_NOTIF); 977 if (!trig) 978 return; 979 980 cmds_trig = (void *)trig->data; 981 982 for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) { 983 /* don't collect on CMD 0 */ 984 if (!cmds_trig->cmds[i].cmd_id) 985 break; 986 987 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd || 988 cmds_trig->cmds[i].group_id != pkt->hdr.group_id) 989 continue; 990 991 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 992 "CMD 0x%02x.%02x received", 993 pkt->hdr.group_id, pkt->hdr.cmd); 994 break; 995 } 996 } 997 998 static void iwl_mvm_rx_common(struct iwl_mvm *mvm, 999 struct iwl_rx_cmd_buffer *rxb, 1000 struct iwl_rx_packet *pkt) 1001 { 1002 int i; 1003 1004 iwl_mvm_rx_check_trigger(mvm, pkt); 1005 1006 /* 1007 * Do the notification wait before RX handlers so 1008 * even if the RX handler consumes the RXB we have 1009 * access to it in the notification wait entry. 1010 */ 1011 iwl_notification_wait_notify(&mvm->notif_wait, pkt); 1012 1013 for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) { 1014 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i]; 1015 struct iwl_async_handler_entry *entry; 1016 1017 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) 1018 continue; 1019 1020 if (rx_h->context == RX_HANDLER_SYNC) { 1021 rx_h->fn(mvm, rxb); 1022 return; 1023 } 1024 1025 entry = kzalloc(sizeof(*entry), GFP_ATOMIC); 1026 /* we can't do much... */ 1027 if (!entry) 1028 return; 1029 1030 entry->rxb._page = rxb_steal_page(rxb); 1031 entry->rxb._offset = rxb->_offset; 1032 entry->rxb._rx_page_order = rxb->_rx_page_order; 1033 entry->fn = rx_h->fn; 1034 entry->context = rx_h->context; 1035 spin_lock(&mvm->async_handlers_lock); 1036 list_add_tail(&entry->list, &mvm->async_handlers_list); 1037 spin_unlock(&mvm->async_handlers_lock); 1038 schedule_work(&mvm->async_handlers_wk); 1039 break; 1040 } 1041 } 1042 1043 static void iwl_mvm_rx(struct iwl_op_mode *op_mode, 1044 struct napi_struct *napi, 1045 struct iwl_rx_cmd_buffer *rxb) 1046 { 1047 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1048 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1049 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); 1050 1051 if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))) 1052 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb); 1053 else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD)) 1054 iwl_mvm_rx_rx_phy_cmd(mvm, rxb); 1055 else 1056 iwl_mvm_rx_common(mvm, rxb, pkt); 1057 } 1058 1059 static void iwl_mvm_rx_mq(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_mpdu_mq(mvm, napi, rxb, 0); 1069 else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP, 1070 RX_QUEUES_NOTIFICATION))) 1071 iwl_mvm_rx_queue_notif(mvm, rxb, 0); 1072 else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)) 1073 iwl_mvm_rx_frame_release(mvm, napi, rxb, 0); 1074 else 1075 iwl_mvm_rx_common(mvm, rxb, pkt); 1076 } 1077 1078 void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq) 1079 { 1080 int q; 1081 1082 if (WARN_ON_ONCE(!mq)) 1083 return; 1084 1085 for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) { 1086 if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) { 1087 IWL_DEBUG_TX_QUEUES(mvm, 1088 "mac80211 %d already stopped\n", q); 1089 continue; 1090 } 1091 1092 ieee80211_stop_queue(mvm->hw, q); 1093 } 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_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue) 1109 { 1110 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1111 unsigned long mq; 1112 1113 spin_lock_bh(&mvm->queue_info_lock); 1114 mq = mvm->hw_queue_to_mac80211[hw_queue]; 1115 spin_unlock_bh(&mvm->queue_info_lock); 1116 1117 iwl_mvm_stop_mac_queues(mvm, mq); 1118 } 1119 1120 void iwl_mvm_start_mac_queues(struct iwl_mvm *mvm, unsigned long mq) 1121 { 1122 int q; 1123 1124 if (WARN_ON_ONCE(!mq)) 1125 return; 1126 1127 for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) { 1128 if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) { 1129 IWL_DEBUG_TX_QUEUES(mvm, 1130 "mac80211 %d still stopped\n", q); 1131 continue; 1132 } 1133 1134 ieee80211_wake_queue(mvm->hw, q); 1135 } 1136 } 1137 1138 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue) 1139 { 1140 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1141 unsigned long mq; 1142 1143 spin_lock_bh(&mvm->queue_info_lock); 1144 mq = mvm->hw_queue_to_mac80211[hw_queue]; 1145 spin_unlock_bh(&mvm->queue_info_lock); 1146 1147 iwl_mvm_start_mac_queues(mvm, mq); 1148 } 1149 1150 static void iwl_mvm_set_rfkill_state(struct iwl_mvm *mvm) 1151 { 1152 bool state = iwl_mvm_is_radio_killed(mvm); 1153 1154 if (state) 1155 wake_up(&mvm->rx_sync_waitq); 1156 1157 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, state); 1158 } 1159 1160 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state) 1161 { 1162 if (state) 1163 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); 1164 else 1165 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); 1166 1167 iwl_mvm_set_rfkill_state(mvm); 1168 } 1169 1170 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state) 1171 { 1172 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1173 bool calibrating = READ_ONCE(mvm->calibrating); 1174 1175 if (state) 1176 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); 1177 else 1178 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); 1179 1180 iwl_mvm_set_rfkill_state(mvm); 1181 1182 /* iwl_run_init_mvm_ucode is waiting for results, abort it */ 1183 if (calibrating) 1184 iwl_abort_notification_waits(&mvm->notif_wait); 1185 1186 /* 1187 * Stop the device if we run OPERATIONAL firmware or if we are in the 1188 * middle of the calibrations. 1189 */ 1190 return state && (mvm->fwrt.cur_fw_img != IWL_UCODE_INIT || calibrating); 1191 } 1192 1193 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb) 1194 { 1195 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1196 struct ieee80211_tx_info *info; 1197 1198 info = IEEE80211_SKB_CB(skb); 1199 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]); 1200 ieee80211_free_txskb(mvm->hw, skb); 1201 } 1202 1203 struct iwl_mvm_reprobe { 1204 struct device *dev; 1205 struct work_struct work; 1206 }; 1207 1208 static void iwl_mvm_reprobe_wk(struct work_struct *wk) 1209 { 1210 struct iwl_mvm_reprobe *reprobe; 1211 1212 reprobe = container_of(wk, struct iwl_mvm_reprobe, work); 1213 if (device_reprobe(reprobe->dev)) 1214 dev_err(reprobe->dev, "reprobe failed!\n"); 1215 kfree(reprobe); 1216 module_put(THIS_MODULE); 1217 } 1218 1219 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error) 1220 { 1221 iwl_abort_notification_waits(&mvm->notif_wait); 1222 1223 /* 1224 * This is a bit racy, but worst case we tell mac80211 about 1225 * a stopped/aborted scan when that was already done which 1226 * is not a problem. It is necessary to abort any os scan 1227 * here because mac80211 requires having the scan cleared 1228 * before restarting. 1229 * We'll reset the scan_status to NONE in restart cleanup in 1230 * the next start() call from mac80211. If restart isn't called 1231 * (no fw restart) scan status will stay busy. 1232 */ 1233 iwl_mvm_report_scan_aborted(mvm); 1234 1235 /* 1236 * If we're restarting already, don't cycle restarts. 1237 * If INIT fw asserted, it will likely fail again. 1238 * If WoWLAN fw asserted, don't restart either, mac80211 1239 * can't recover this since we're already half suspended. 1240 */ 1241 if (!mvm->fw_restart && fw_error) { 1242 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert, 1243 NULL, 0); 1244 } else if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1245 struct iwl_mvm_reprobe *reprobe; 1246 1247 IWL_ERR(mvm, 1248 "Firmware error during reconfiguration - reprobe!\n"); 1249 1250 /* 1251 * get a module reference to avoid doing this while unloading 1252 * anyway and to avoid scheduling a work with code that's 1253 * being removed. 1254 */ 1255 if (!try_module_get(THIS_MODULE)) { 1256 IWL_ERR(mvm, "Module is being unloaded - abort\n"); 1257 return; 1258 } 1259 1260 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC); 1261 if (!reprobe) { 1262 module_put(THIS_MODULE); 1263 return; 1264 } 1265 reprobe->dev = mvm->trans->dev; 1266 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk); 1267 schedule_work(&reprobe->work); 1268 } else if (mvm->fwrt.cur_fw_img == IWL_UCODE_REGULAR && 1269 mvm->hw_registered && 1270 !test_bit(STATUS_TRANS_DEAD, &mvm->trans->status)) { 1271 /* don't let the transport/FW power down */ 1272 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); 1273 1274 if (fw_error && mvm->fw_restart > 0) 1275 mvm->fw_restart--; 1276 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); 1277 ieee80211_restart_hw(mvm->hw); 1278 } 1279 } 1280 1281 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode) 1282 { 1283 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1284 1285 if (!test_bit(STATUS_TRANS_DEAD, &mvm->trans->status)) 1286 iwl_mvm_dump_nic_error_log(mvm); 1287 1288 iwl_mvm_nic_restart(mvm, true); 1289 } 1290 1291 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode) 1292 { 1293 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1294 1295 WARN_ON(1); 1296 iwl_mvm_nic_restart(mvm, true); 1297 } 1298 1299 #ifdef CONFIG_PM 1300 struct iwl_d0i3_iter_data { 1301 struct iwl_mvm *mvm; 1302 struct ieee80211_vif *connected_vif; 1303 u8 ap_sta_id; 1304 u8 vif_count; 1305 u8 offloading_tid; 1306 bool disable_offloading; 1307 }; 1308 1309 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm, 1310 struct ieee80211_vif *vif, 1311 struct iwl_d0i3_iter_data *iter_data) 1312 { 1313 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1314 struct iwl_mvm_sta *mvmsta; 1315 u32 available_tids = 0; 1316 u8 tid; 1317 1318 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION || 1319 mvmvif->ap_sta_id == IWL_MVM_INVALID_STA)) 1320 return false; 1321 1322 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); 1323 if (!mvmsta) 1324 return false; 1325 1326 spin_lock_bh(&mvmsta->lock); 1327 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1328 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 1329 1330 /* 1331 * in case of pending tx packets, don't use this tid 1332 * for offloading in order to prevent reuse of the same 1333 * qos seq counters. 1334 */ 1335 if (iwl_mvm_tid_queued(mvm, tid_data)) 1336 continue; 1337 1338 if (tid_data->state != IWL_AGG_OFF) 1339 continue; 1340 1341 available_tids |= BIT(tid); 1342 } 1343 spin_unlock_bh(&mvmsta->lock); 1344 1345 /* 1346 * disallow protocol offloading if we have no available tid 1347 * (with no pending frames and no active aggregation, 1348 * as we don't handle "holes" properly - the scheduler needs the 1349 * frame's seq number and TFD index to match) 1350 */ 1351 if (!available_tids) 1352 return true; 1353 1354 /* for simplicity, just use the first available tid */ 1355 iter_data->offloading_tid = ffs(available_tids) - 1; 1356 return false; 1357 } 1358 1359 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac, 1360 struct ieee80211_vif *vif) 1361 { 1362 struct iwl_d0i3_iter_data *data = _data; 1363 struct iwl_mvm *mvm = data->mvm; 1364 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1365 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; 1366 1367 IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr); 1368 if (vif->type != NL80211_IFTYPE_STATION || 1369 !vif->bss_conf.assoc) 1370 return; 1371 1372 /* 1373 * in case of pending tx packets or active aggregations, 1374 * avoid offloading features in order to prevent reuse of 1375 * the same qos seq counters. 1376 */ 1377 if (iwl_mvm_disallow_offloading(mvm, vif, data)) 1378 data->disable_offloading = true; 1379 1380 iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags); 1381 iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading, 1382 false, flags); 1383 1384 /* 1385 * on init/association, mvm already configures POWER_TABLE_CMD 1386 * and REPLY_MCAST_FILTER_CMD, so currently don't 1387 * reconfigure them (we might want to use different 1388 * params later on, though). 1389 */ 1390 data->ap_sta_id = mvmvif->ap_sta_id; 1391 data->vif_count++; 1392 1393 /* 1394 * no new commands can be sent at this stage, so it's safe 1395 * to save the vif pointer during d0i3 entrance. 1396 */ 1397 data->connected_vif = vif; 1398 } 1399 1400 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm, 1401 struct iwl_wowlan_config_cmd *cmd, 1402 struct iwl_d0i3_iter_data *iter_data) 1403 { 1404 struct ieee80211_sta *ap_sta; 1405 struct iwl_mvm_sta *mvm_ap_sta; 1406 1407 if (iter_data->ap_sta_id == IWL_MVM_INVALID_STA) 1408 return; 1409 1410 rcu_read_lock(); 1411 1412 ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]); 1413 if (IS_ERR_OR_NULL(ap_sta)) 1414 goto out; 1415 1416 mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta); 1417 cmd->is_11n_connection = ap_sta->ht_cap.ht_supported; 1418 cmd->offloading_tid = iter_data->offloading_tid; 1419 cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING | 1420 ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON; 1421 /* 1422 * The d0i3 uCode takes care of the nonqos counters, 1423 * so configure only the qos seq ones. 1424 */ 1425 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd); 1426 out: 1427 rcu_read_unlock(); 1428 } 1429 1430 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode) 1431 { 1432 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1433 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; 1434 int ret; 1435 struct iwl_d0i3_iter_data d0i3_iter_data = { 1436 .mvm = mvm, 1437 }; 1438 struct iwl_wowlan_config_cmd wowlan_config_cmd = { 1439 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME | 1440 IWL_WOWLAN_WAKEUP_BEACON_MISS | 1441 IWL_WOWLAN_WAKEUP_LINK_CHANGE), 1442 }; 1443 struct iwl_d3_manager_config d3_cfg_cmd = { 1444 .min_sleep_time = cpu_to_le32(1000), 1445 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR), 1446 }; 1447 1448 IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n"); 1449 1450 if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR)) 1451 return -EINVAL; 1452 1453 set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1454 1455 /* 1456 * iwl_mvm_ref_sync takes a reference before checking the flag. 1457 * so by checking there is no held reference we prevent a state 1458 * in which iwl_mvm_ref_sync continues successfully while we 1459 * configure the firmware to enter d0i3 1460 */ 1461 if (iwl_mvm_ref_taken(mvm)) { 1462 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n"); 1463 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1464 wake_up(&mvm->d0i3_exit_waitq); 1465 return 1; 1466 } 1467 1468 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1469 IEEE80211_IFACE_ITER_NORMAL, 1470 iwl_mvm_enter_d0i3_iterator, 1471 &d0i3_iter_data); 1472 if (d0i3_iter_data.vif_count == 1) { 1473 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id; 1474 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading; 1475 } else { 1476 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1); 1477 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA; 1478 mvm->d0i3_offloading = false; 1479 } 1480 1481 iwl_mvm_pause_tcm(mvm, true); 1482 /* make sure we have no running tx while configuring the seqno */ 1483 synchronize_net(); 1484 1485 /* Flush the hw queues, in case something got queued during entry */ 1486 /* TODO new tx api */ 1487 if (iwl_mvm_has_new_tx_api(mvm)) { 1488 WARN_ONCE(1, "d0i3: Need to implement flush TX queue\n"); 1489 } else { 1490 ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm), 1491 flags); 1492 if (ret) 1493 return ret; 1494 } 1495 1496 /* configure wowlan configuration only if needed */ 1497 if (mvm->d0i3_ap_sta_id != IWL_MVM_INVALID_STA) { 1498 /* wake on beacons only if beacon storing isn't supported */ 1499 if (!fw_has_capa(&mvm->fw->ucode_capa, 1500 IWL_UCODE_TLV_CAPA_BEACON_STORING)) 1501 wowlan_config_cmd.wakeup_filter |= 1502 cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING); 1503 1504 iwl_mvm_wowlan_config_key_params(mvm, 1505 d0i3_iter_data.connected_vif, 1506 true, flags); 1507 1508 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd, 1509 &d0i3_iter_data); 1510 1511 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags, 1512 sizeof(wowlan_config_cmd), 1513 &wowlan_config_cmd); 1514 if (ret) 1515 return ret; 1516 } 1517 1518 return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD, 1519 flags | CMD_MAKE_TRANS_IDLE, 1520 sizeof(d3_cfg_cmd), &d3_cfg_cmd); 1521 } 1522 1523 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac, 1524 struct ieee80211_vif *vif) 1525 { 1526 struct iwl_mvm *mvm = _data; 1527 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO; 1528 1529 IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr); 1530 if (vif->type != NL80211_IFTYPE_STATION || 1531 !vif->bss_conf.assoc) 1532 return; 1533 1534 iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags); 1535 } 1536 1537 struct iwl_mvm_d0i3_exit_work_iter_data { 1538 struct iwl_mvm *mvm; 1539 struct iwl_wowlan_status *status; 1540 u32 wakeup_reasons; 1541 }; 1542 1543 static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac, 1544 struct ieee80211_vif *vif) 1545 { 1546 struct iwl_mvm_d0i3_exit_work_iter_data *data = _data; 1547 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1548 u32 reasons = data->wakeup_reasons; 1549 1550 /* consider only the relevant station interface */ 1551 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc || 1552 data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id) 1553 return; 1554 1555 if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH) 1556 iwl_mvm_connection_loss(data->mvm, vif, "D0i3"); 1557 else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON) 1558 ieee80211_beacon_loss(vif); 1559 else 1560 iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status); 1561 } 1562 1563 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq) 1564 { 1565 struct ieee80211_sta *sta = NULL; 1566 struct iwl_mvm_sta *mvm_ap_sta; 1567 int i; 1568 bool wake_queues = false; 1569 1570 lockdep_assert_held(&mvm->mutex); 1571 1572 spin_lock_bh(&mvm->d0i3_tx_lock); 1573 1574 if (mvm->d0i3_ap_sta_id == IWL_MVM_INVALID_STA) 1575 goto out; 1576 1577 IWL_DEBUG_RPM(mvm, "re-enqueue packets\n"); 1578 1579 /* get the sta in order to update seq numbers and re-enqueue skbs */ 1580 sta = rcu_dereference_protected( 1581 mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id], 1582 lockdep_is_held(&mvm->mutex)); 1583 1584 if (IS_ERR_OR_NULL(sta)) { 1585 sta = NULL; 1586 goto out; 1587 } 1588 1589 if (mvm->d0i3_offloading && qos_seq) { 1590 /* update qos seq numbers if offloading was enabled */ 1591 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta); 1592 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1593 u16 seq = le16_to_cpu(qos_seq[i]); 1594 /* firmware stores last-used one, we store next one */ 1595 seq += 0x10; 1596 mvm_ap_sta->tid_data[i].seq_number = seq; 1597 } 1598 } 1599 out: 1600 /* re-enqueue (or drop) all packets */ 1601 while (!skb_queue_empty(&mvm->d0i3_tx)) { 1602 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx); 1603 1604 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta)) 1605 ieee80211_free_txskb(mvm->hw, skb); 1606 1607 /* if the skb_queue is not empty, we need to wake queues */ 1608 wake_queues = true; 1609 } 1610 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1611 wake_up(&mvm->d0i3_exit_waitq); 1612 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA; 1613 if (wake_queues) 1614 ieee80211_wake_queues(mvm->hw); 1615 1616 spin_unlock_bh(&mvm->d0i3_tx_lock); 1617 } 1618 1619 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk) 1620 { 1621 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work); 1622 struct iwl_mvm_d0i3_exit_work_iter_data iter_data = { 1623 .mvm = mvm, 1624 }; 1625 1626 struct iwl_wowlan_status *status; 1627 u32 wakeup_reasons = 0; 1628 __le16 *qos_seq = NULL; 1629 1630 mutex_lock(&mvm->mutex); 1631 1632 status = iwl_mvm_send_wowlan_get_status(mvm); 1633 if (IS_ERR_OR_NULL(status)) { 1634 /* set to NULL so we don't need to check before kfree'ing */ 1635 status = NULL; 1636 goto out; 1637 } 1638 1639 wakeup_reasons = le32_to_cpu(status->wakeup_reasons); 1640 qos_seq = status->qos_seq_ctr; 1641 1642 IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons); 1643 1644 iter_data.wakeup_reasons = wakeup_reasons; 1645 iter_data.status = status; 1646 ieee80211_iterate_active_interfaces(mvm->hw, 1647 IEEE80211_IFACE_ITER_NORMAL, 1648 iwl_mvm_d0i3_exit_work_iter, 1649 &iter_data); 1650 out: 1651 iwl_mvm_d0i3_enable_tx(mvm, qos_seq); 1652 1653 IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n", 1654 wakeup_reasons); 1655 1656 /* qos_seq might point inside resp_pkt, so free it only now */ 1657 kfree(status); 1658 1659 /* the FW might have updated the regdomain */ 1660 iwl_mvm_update_changed_regdom(mvm); 1661 1662 iwl_mvm_resume_tcm(mvm); 1663 iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK); 1664 mutex_unlock(&mvm->mutex); 1665 } 1666 1667 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm) 1668 { 1669 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE | 1670 CMD_WAKE_UP_TRANS; 1671 int ret; 1672 1673 IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n"); 1674 1675 if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR)) 1676 return -EINVAL; 1677 1678 mutex_lock(&mvm->d0i3_suspend_mutex); 1679 if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) { 1680 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n"); 1681 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags); 1682 mutex_unlock(&mvm->d0i3_suspend_mutex); 1683 return 0; 1684 } 1685 mutex_unlock(&mvm->d0i3_suspend_mutex); 1686 1687 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL); 1688 if (ret) 1689 goto out; 1690 1691 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1692 IEEE80211_IFACE_ITER_NORMAL, 1693 iwl_mvm_exit_d0i3_iterator, 1694 mvm); 1695 out: 1696 schedule_work(&mvm->d0i3_exit_work); 1697 return ret; 1698 } 1699 1700 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode) 1701 { 1702 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1703 1704 iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK); 1705 return _iwl_mvm_exit_d0i3(mvm); 1706 } 1707 1708 #define IWL_MVM_D0I3_OPS \ 1709 .enter_d0i3 = iwl_mvm_enter_d0i3, \ 1710 .exit_d0i3 = iwl_mvm_exit_d0i3, 1711 #else /* CONFIG_PM */ 1712 #define IWL_MVM_D0I3_OPS 1713 #endif /* CONFIG_PM */ 1714 1715 #define IWL_MVM_COMMON_OPS \ 1716 /* these could be differentiated */ \ 1717 .async_cb = iwl_mvm_async_cb, \ 1718 .queue_full = iwl_mvm_stop_sw_queue, \ 1719 .queue_not_full = iwl_mvm_wake_sw_queue, \ 1720 .hw_rf_kill = iwl_mvm_set_hw_rfkill_state, \ 1721 .free_skb = iwl_mvm_free_skb, \ 1722 .nic_error = iwl_mvm_nic_error, \ 1723 .cmd_queue_full = iwl_mvm_cmd_queue_full, \ 1724 .nic_config = iwl_mvm_nic_config, \ 1725 IWL_MVM_D0I3_OPS \ 1726 /* as we only register one, these MUST be common! */ \ 1727 .start = iwl_op_mode_mvm_start, \ 1728 .stop = iwl_op_mode_mvm_stop 1729 1730 static const struct iwl_op_mode_ops iwl_mvm_ops = { 1731 IWL_MVM_COMMON_OPS, 1732 .rx = iwl_mvm_rx, 1733 }; 1734 1735 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode, 1736 struct napi_struct *napi, 1737 struct iwl_rx_cmd_buffer *rxb, 1738 unsigned int queue) 1739 { 1740 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1741 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1742 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); 1743 1744 if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))) 1745 iwl_mvm_rx_frame_release(mvm, napi, rxb, queue); 1746 else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP, 1747 RX_QUEUES_NOTIFICATION))) 1748 iwl_mvm_rx_queue_notif(mvm, rxb, queue); 1749 else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))) 1750 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue); 1751 } 1752 1753 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = { 1754 IWL_MVM_COMMON_OPS, 1755 .rx = iwl_mvm_rx_mq, 1756 .rx_rss = iwl_mvm_rx_mq_rss, 1757 }; 1758