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 * You should have received a copy of the GNU General Public License 23 * along with this program; if not, write to the Free Software 24 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, 25 * USA 26 * 27 * The full GNU General Public License is included in this distribution 28 * in the file called COPYING. 29 * 30 * Contact Information: 31 * Intel Linux Wireless <linuxwifi@intel.com> 32 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 33 * 34 * BSD LICENSE 35 * 36 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 37 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 38 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH 39 * Copyright(c) 2018 Intel Corporation 40 * All rights reserved. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 46 * * Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * * Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in 50 * the documentation and/or other materials provided with the 51 * distribution. 52 * * Neither the name Intel Corporation nor the names of its 53 * contributors may be used to endorse or promote products derived 54 * from this software without specific prior written permission. 55 * 56 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 57 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 58 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 59 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 60 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 61 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 62 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 63 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 64 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 65 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 66 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 67 * 68 *****************************************************************************/ 69 #include <linux/module.h> 70 #include <linux/vmalloc.h> 71 #include <net/mac80211.h> 72 73 #include "fw/notif-wait.h" 74 #include "iwl-trans.h" 75 #include "iwl-op-mode.h" 76 #include "fw/img.h" 77 #include "iwl-debug.h" 78 #include "iwl-drv.h" 79 #include "iwl-modparams.h" 80 #include "mvm.h" 81 #include "iwl-phy-db.h" 82 #include "iwl-eeprom-parse.h" 83 #include "iwl-csr.h" 84 #include "iwl-io.h" 85 #include "iwl-prph.h" 86 #include "rs.h" 87 #include "fw/api/scan.h" 88 #include "time-event.h" 89 #include "fw-api.h" 90 #include "fw/api/scan.h" 91 #include "fw/acpi.h" 92 93 #define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux" 94 MODULE_DESCRIPTION(DRV_DESCRIPTION); 95 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR); 96 MODULE_LICENSE("GPL"); 97 98 static const struct iwl_op_mode_ops iwl_mvm_ops; 99 static const struct iwl_op_mode_ops iwl_mvm_ops_mq; 100 101 struct iwl_mvm_mod_params iwlmvm_mod_params = { 102 .power_scheme = IWL_POWER_SCHEME_BPS, 103 .tfd_q_hang_detect = true 104 /* rest of fields are 0 by default */ 105 }; 106 107 module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, 0444); 108 MODULE_PARM_DESC(init_dbg, 109 "set to true to debug an ASSERT in INIT fw (default: false"); 110 module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, 0444); 111 MODULE_PARM_DESC(power_scheme, 112 "power management scheme: 1-active, 2-balanced, 3-low power, default: 2"); 113 module_param_named(tfd_q_hang_detect, iwlmvm_mod_params.tfd_q_hang_detect, 114 bool, 0444); 115 MODULE_PARM_DESC(tfd_q_hang_detect, 116 "TFD queues hang detection (default: true"); 117 118 /* 119 * module init and exit functions 120 */ 121 static int __init iwl_mvm_init(void) 122 { 123 int ret; 124 125 ret = iwl_mvm_rate_control_register(); 126 if (ret) { 127 pr_err("Unable to register rate control algorithm: %d\n", ret); 128 return ret; 129 } 130 131 ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops); 132 if (ret) 133 pr_err("Unable to register MVM op_mode: %d\n", ret); 134 135 return ret; 136 } 137 module_init(iwl_mvm_init); 138 139 static void __exit iwl_mvm_exit(void) 140 { 141 iwl_opmode_deregister("iwlmvm"); 142 iwl_mvm_rate_control_unregister(); 143 } 144 module_exit(iwl_mvm_exit); 145 146 static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode) 147 { 148 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 149 u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash; 150 u32 reg_val = 0; 151 u32 phy_config = iwl_mvm_get_phy_config(mvm); 152 153 radio_cfg_type = (phy_config & FW_PHY_CFG_RADIO_TYPE) >> 154 FW_PHY_CFG_RADIO_TYPE_POS; 155 radio_cfg_step = (phy_config & FW_PHY_CFG_RADIO_STEP) >> 156 FW_PHY_CFG_RADIO_STEP_POS; 157 radio_cfg_dash = (phy_config & FW_PHY_CFG_RADIO_DASH) >> 158 FW_PHY_CFG_RADIO_DASH_POS; 159 160 /* SKU control */ 161 reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) << 162 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP; 163 reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) << 164 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH; 165 166 /* radio configuration */ 167 reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE; 168 reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP; 169 reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH; 170 171 WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) & 172 ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE); 173 174 /* 175 * TODO: Bits 7-8 of CSR in 8000 HW family and higher set the ADC 176 * sampling, and shouldn't be set to any non-zero value. 177 * The same is supposed to be true of the other HW, but unsetting 178 * them (such as the 7260) causes automatic tests to fail on seemingly 179 * unrelated errors. Need to further investigate this, but for now 180 * we'll separate cases. 181 */ 182 if (mvm->trans->cfg->device_family < IWL_DEVICE_FAMILY_8000) 183 reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI; 184 185 iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG, 186 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH | 187 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP | 188 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE | 189 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP | 190 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH | 191 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI | 192 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI, 193 reg_val); 194 195 IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type, 196 radio_cfg_step, radio_cfg_dash); 197 198 /* 199 * W/A : NIC is stuck in a reset state after Early PCIe power off 200 * (PCIe power is lost before PERST# is asserted), causing ME FW 201 * to lose ownership and not being able to obtain it back. 202 */ 203 if (!mvm->trans->cfg->apmg_not_supported) 204 iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG, 205 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS, 206 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS); 207 } 208 209 /** 210 * enum iwl_rx_handler_context context for Rx handler 211 * @RX_HANDLER_SYNC : this means that it will be called in the Rx path 212 * which can't acquire mvm->mutex. 213 * @RX_HANDLER_ASYNC_LOCKED : If the handler needs to hold mvm->mutex 214 * (and only in this case!), it should be set as ASYNC. In that case, 215 * it will be called from a worker with mvm->mutex held. 216 * @RX_HANDLER_ASYNC_UNLOCKED : in case the handler needs to lock the 217 * mutex itself, it will be called from a worker without mvm->mutex held. 218 */ 219 enum iwl_rx_handler_context { 220 RX_HANDLER_SYNC, 221 RX_HANDLER_ASYNC_LOCKED, 222 RX_HANDLER_ASYNC_UNLOCKED, 223 }; 224 225 /** 226 * struct iwl_rx_handlers handler for FW notification 227 * @cmd_id: command id 228 * @context: see &iwl_rx_handler_context 229 * @fn: the function is called when notification is received 230 */ 231 struct iwl_rx_handlers { 232 u16 cmd_id; 233 enum iwl_rx_handler_context context; 234 void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb); 235 }; 236 237 #define RX_HANDLER(_cmd_id, _fn, _context) \ 238 { .cmd_id = _cmd_id, .fn = _fn, .context = _context } 239 #define RX_HANDLER_GRP(_grp, _cmd, _fn, _context) \ 240 { .cmd_id = WIDE_ID(_grp, _cmd), .fn = _fn, .context = _context } 241 242 /* 243 * Handlers for fw notifications 244 * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME 245 * This list should be in order of frequency for performance purposes. 246 * 247 * The handler can be one from three contexts, see &iwl_rx_handler_context 248 */ 249 static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = { 250 RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, RX_HANDLER_SYNC), 251 RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, RX_HANDLER_SYNC), 252 253 RX_HANDLER_GRP(DATA_PATH_GROUP, TLC_MNG_UPDATE_NOTIF, 254 iwl_mvm_tlc_update_notif, RX_HANDLER_SYNC), 255 256 RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif, 257 RX_HANDLER_ASYNC_LOCKED), 258 RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif, 259 RX_HANDLER_ASYNC_LOCKED), 260 RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics, 261 RX_HANDLER_ASYNC_LOCKED), 262 263 RX_HANDLER(BA_WINDOW_STATUS_NOTIFICATION_ID, 264 iwl_mvm_window_status_notif, RX_HANDLER_SYNC), 265 266 RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif, 267 RX_HANDLER_SYNC), 268 RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc, 269 RX_HANDLER_ASYNC_LOCKED), 270 271 RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, RX_HANDLER_SYNC), 272 273 RX_HANDLER(SCAN_ITERATION_COMPLETE, 274 iwl_mvm_rx_lmac_scan_iter_complete_notif, RX_HANDLER_SYNC), 275 RX_HANDLER(SCAN_OFFLOAD_COMPLETE, 276 iwl_mvm_rx_lmac_scan_complete_notif, 277 RX_HANDLER_ASYNC_LOCKED), 278 RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_match_found, 279 RX_HANDLER_SYNC), 280 RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif, 281 RX_HANDLER_ASYNC_LOCKED), 282 RX_HANDLER(SCAN_ITERATION_COMPLETE_UMAC, 283 iwl_mvm_rx_umac_scan_iter_complete_notif, RX_HANDLER_SYNC), 284 285 RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif, 286 RX_HANDLER_SYNC), 287 288 RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif, 289 RX_HANDLER_SYNC), 290 291 RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, RX_HANDLER_SYNC), 292 RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION, 293 iwl_mvm_power_uapsd_misbehaving_ap_notif, RX_HANDLER_SYNC), 294 RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif, 295 RX_HANDLER_ASYNC_LOCKED), 296 RX_HANDLER_GRP(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE, 297 iwl_mvm_temp_notif, RX_HANDLER_ASYNC_UNLOCKED), 298 RX_HANDLER_GRP(PHY_OPS_GROUP, CT_KILL_NOTIFICATION, 299 iwl_mvm_ct_kill_notif, RX_HANDLER_SYNC), 300 301 RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif, 302 RX_HANDLER_ASYNC_LOCKED), 303 RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif, 304 RX_HANDLER_SYNC), 305 RX_HANDLER(TOF_NOTIFICATION, iwl_mvm_tof_resp_handler, 306 RX_HANDLER_ASYNC_LOCKED), 307 RX_HANDLER_GRP(DEBUG_GROUP, MFU_ASSERT_DUMP_NTF, 308 iwl_mvm_mfu_assert_dump_notif, RX_HANDLER_SYNC), 309 RX_HANDLER_GRP(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF, 310 iwl_mvm_rx_stored_beacon_notif, RX_HANDLER_SYNC), 311 RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF, 312 iwl_mvm_mu_mimo_grp_notif, RX_HANDLER_SYNC), 313 RX_HANDLER_GRP(DATA_PATH_GROUP, STA_PM_NOTIF, 314 iwl_mvm_sta_pm_notif, RX_HANDLER_SYNC), 315 }; 316 #undef RX_HANDLER 317 #undef RX_HANDLER_GRP 318 319 /* Please keep this array *SORTED* by hex value. 320 * Access is done through binary search 321 */ 322 static const struct iwl_hcmd_names iwl_mvm_legacy_names[] = { 323 HCMD_NAME(MVM_ALIVE), 324 HCMD_NAME(REPLY_ERROR), 325 HCMD_NAME(ECHO_CMD), 326 HCMD_NAME(INIT_COMPLETE_NOTIF), 327 HCMD_NAME(PHY_CONTEXT_CMD), 328 HCMD_NAME(DBG_CFG), 329 HCMD_NAME(SCAN_CFG_CMD), 330 HCMD_NAME(SCAN_REQ_UMAC), 331 HCMD_NAME(SCAN_ABORT_UMAC), 332 HCMD_NAME(SCAN_COMPLETE_UMAC), 333 HCMD_NAME(TOF_CMD), 334 HCMD_NAME(TOF_NOTIFICATION), 335 HCMD_NAME(BA_WINDOW_STATUS_NOTIFICATION_ID), 336 HCMD_NAME(ADD_STA_KEY), 337 HCMD_NAME(ADD_STA), 338 HCMD_NAME(REMOVE_STA), 339 HCMD_NAME(FW_GET_ITEM_CMD), 340 HCMD_NAME(TX_CMD), 341 HCMD_NAME(SCD_QUEUE_CFG), 342 HCMD_NAME(TXPATH_FLUSH), 343 HCMD_NAME(MGMT_MCAST_KEY), 344 HCMD_NAME(WEP_KEY), 345 HCMD_NAME(SHARED_MEM_CFG), 346 HCMD_NAME(TDLS_CHANNEL_SWITCH_CMD), 347 HCMD_NAME(MAC_CONTEXT_CMD), 348 HCMD_NAME(TIME_EVENT_CMD), 349 HCMD_NAME(TIME_EVENT_NOTIFICATION), 350 HCMD_NAME(BINDING_CONTEXT_CMD), 351 HCMD_NAME(TIME_QUOTA_CMD), 352 HCMD_NAME(NON_QOS_TX_COUNTER_CMD), 353 HCMD_NAME(LEDS_CMD), 354 HCMD_NAME(LQ_CMD), 355 HCMD_NAME(FW_PAGING_BLOCK_CMD), 356 HCMD_NAME(SCAN_OFFLOAD_REQUEST_CMD), 357 HCMD_NAME(SCAN_OFFLOAD_ABORT_CMD), 358 HCMD_NAME(HOT_SPOT_CMD), 359 HCMD_NAME(SCAN_OFFLOAD_PROFILES_QUERY_CMD), 360 HCMD_NAME(BT_COEX_UPDATE_REDUCED_TXP), 361 HCMD_NAME(BT_COEX_CI), 362 HCMD_NAME(PHY_CONFIGURATION_CMD), 363 HCMD_NAME(CALIB_RES_NOTIF_PHY_DB), 364 HCMD_NAME(PHY_DB_CMD), 365 HCMD_NAME(SCAN_OFFLOAD_COMPLETE), 366 HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_CMD), 367 HCMD_NAME(POWER_TABLE_CMD), 368 HCMD_NAME(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION), 369 HCMD_NAME(REPLY_THERMAL_MNG_BACKOFF), 370 HCMD_NAME(DC2DC_CONFIG_CMD), 371 HCMD_NAME(NVM_ACCESS_CMD), 372 HCMD_NAME(BEACON_NOTIFICATION), 373 HCMD_NAME(BEACON_TEMPLATE_CMD), 374 HCMD_NAME(TX_ANT_CONFIGURATION_CMD), 375 HCMD_NAME(BT_CONFIG), 376 HCMD_NAME(STATISTICS_CMD), 377 HCMD_NAME(STATISTICS_NOTIFICATION), 378 HCMD_NAME(EOSP_NOTIFICATION), 379 HCMD_NAME(REDUCE_TX_POWER_CMD), 380 HCMD_NAME(CARD_STATE_NOTIFICATION), 381 HCMD_NAME(MISSED_BEACONS_NOTIFICATION), 382 HCMD_NAME(TDLS_CONFIG_CMD), 383 HCMD_NAME(MAC_PM_POWER_TABLE), 384 HCMD_NAME(TDLS_CHANNEL_SWITCH_NOTIFICATION), 385 HCMD_NAME(MFUART_LOAD_NOTIFICATION), 386 HCMD_NAME(RSS_CONFIG_CMD), 387 HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC), 388 HCMD_NAME(REPLY_RX_PHY_CMD), 389 HCMD_NAME(REPLY_RX_MPDU_CMD), 390 HCMD_NAME(FRAME_RELEASE), 391 HCMD_NAME(BA_NOTIF), 392 HCMD_NAME(MCC_UPDATE_CMD), 393 HCMD_NAME(MCC_CHUB_UPDATE_CMD), 394 HCMD_NAME(MARKER_CMD), 395 HCMD_NAME(BT_PROFILE_NOTIFICATION), 396 HCMD_NAME(BCAST_FILTER_CMD), 397 HCMD_NAME(MCAST_FILTER_CMD), 398 HCMD_NAME(REPLY_SF_CFG_CMD), 399 HCMD_NAME(REPLY_BEACON_FILTERING_CMD), 400 HCMD_NAME(D3_CONFIG_CMD), 401 HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD), 402 HCMD_NAME(OFFLOADS_QUERY_CMD), 403 HCMD_NAME(REMOTE_WAKE_CONFIG_CMD), 404 HCMD_NAME(MATCH_FOUND_NOTIFICATION), 405 HCMD_NAME(DTS_MEASUREMENT_NOTIFICATION), 406 HCMD_NAME(WOWLAN_PATTERNS), 407 HCMD_NAME(WOWLAN_CONFIGURATION), 408 HCMD_NAME(WOWLAN_TSC_RSC_PARAM), 409 HCMD_NAME(WOWLAN_TKIP_PARAM), 410 HCMD_NAME(WOWLAN_KEK_KCK_MATERIAL), 411 HCMD_NAME(WOWLAN_GET_STATUSES), 412 HCMD_NAME(SCAN_ITERATION_COMPLETE), 413 HCMD_NAME(D0I3_END_CMD), 414 HCMD_NAME(LTR_CONFIG), 415 }; 416 417 /* Please keep this array *SORTED* by hex value. 418 * Access is done through binary search 419 */ 420 static const struct iwl_hcmd_names iwl_mvm_system_names[] = { 421 HCMD_NAME(SHARED_MEM_CFG_CMD), 422 HCMD_NAME(INIT_EXTENDED_CFG_CMD), 423 }; 424 425 /* Please keep this array *SORTED* by hex value. 426 * Access is done through binary search 427 */ 428 static const struct iwl_hcmd_names iwl_mvm_mac_conf_names[] = { 429 HCMD_NAME(CHANNEL_SWITCH_NOA_NOTIF), 430 }; 431 432 /* Please keep this array *SORTED* by hex value. 433 * Access is done through binary search 434 */ 435 static const struct iwl_hcmd_names iwl_mvm_phy_names[] = { 436 HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE), 437 HCMD_NAME(CTDP_CONFIG_CMD), 438 HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD), 439 HCMD_NAME(GEO_TX_POWER_LIMIT), 440 HCMD_NAME(CT_KILL_NOTIFICATION), 441 HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE), 442 }; 443 444 /* Please keep this array *SORTED* by hex value. 445 * Access is done through binary search 446 */ 447 static const struct iwl_hcmd_names iwl_mvm_data_path_names[] = { 448 HCMD_NAME(DQA_ENABLE_CMD), 449 HCMD_NAME(UPDATE_MU_GROUPS_CMD), 450 HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD), 451 HCMD_NAME(STA_PM_NOTIF), 452 HCMD_NAME(MU_GROUP_MGMT_NOTIF), 453 HCMD_NAME(RX_QUEUES_NOTIFICATION), 454 }; 455 456 /* Please keep this array *SORTED* by hex value. 457 * Access is done through binary search 458 */ 459 static const struct iwl_hcmd_names iwl_mvm_debug_names[] = { 460 HCMD_NAME(MFU_ASSERT_DUMP_NTF), 461 }; 462 463 /* Please keep this array *SORTED* by hex value. 464 * Access is done through binary search 465 */ 466 static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = { 467 HCMD_NAME(STORED_BEACON_NTF), 468 }; 469 470 /* Please keep this array *SORTED* by hex value. 471 * Access is done through binary search 472 */ 473 static const struct iwl_hcmd_names iwl_mvm_regulatory_and_nvm_names[] = { 474 HCMD_NAME(NVM_ACCESS_COMPLETE), 475 HCMD_NAME(NVM_GET_INFO), 476 }; 477 478 static const struct iwl_hcmd_arr iwl_mvm_groups[] = { 479 [LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names), 480 [LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names), 481 [SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names), 482 [MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names), 483 [PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names), 484 [DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names), 485 [PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names), 486 [REGULATORY_AND_NVM_GROUP] = 487 HCMD_ARR(iwl_mvm_regulatory_and_nvm_names), 488 }; 489 490 /* this forward declaration can avoid to export the function */ 491 static void iwl_mvm_async_handlers_wk(struct work_struct *wk); 492 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk); 493 494 static u32 iwl_mvm_min_backoff(struct iwl_mvm *mvm) 495 { 496 const struct iwl_pwr_tx_backoff *backoff = mvm->cfg->pwr_tx_backoffs; 497 u64 dflt_pwr_limit; 498 499 if (!backoff) 500 return 0; 501 502 dflt_pwr_limit = iwl_acpi_get_pwr_limit(mvm->dev); 503 504 while (backoff->pwr) { 505 if (dflt_pwr_limit >= backoff->pwr) 506 return backoff->backoff; 507 508 backoff++; 509 } 510 511 return 0; 512 } 513 514 static void iwl_mvm_tx_unblock_dwork(struct work_struct *work) 515 { 516 struct iwl_mvm *mvm = 517 container_of(work, struct iwl_mvm, cs_tx_unblock_dwork.work); 518 struct ieee80211_vif *tx_blocked_vif; 519 struct iwl_mvm_vif *mvmvif; 520 521 mutex_lock(&mvm->mutex); 522 523 tx_blocked_vif = 524 rcu_dereference_protected(mvm->csa_tx_blocked_vif, 525 lockdep_is_held(&mvm->mutex)); 526 527 if (!tx_blocked_vif) 528 goto unlock; 529 530 mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif); 531 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false); 532 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); 533 unlock: 534 mutex_unlock(&mvm->mutex); 535 } 536 537 static int iwl_mvm_fwrt_dump_start(void *ctx) 538 { 539 struct iwl_mvm *mvm = ctx; 540 int ret; 541 542 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT); 543 if (ret) 544 return ret; 545 546 mutex_lock(&mvm->mutex); 547 548 return 0; 549 } 550 551 static void iwl_mvm_fwrt_dump_end(void *ctx) 552 { 553 struct iwl_mvm *mvm = ctx; 554 555 mutex_unlock(&mvm->mutex); 556 557 iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT); 558 } 559 560 static bool iwl_mvm_fwrt_fw_running(void *ctx) 561 { 562 return iwl_mvm_firmware_running(ctx); 563 } 564 565 static const struct iwl_fw_runtime_ops iwl_mvm_fwrt_ops = { 566 .dump_start = iwl_mvm_fwrt_dump_start, 567 .dump_end = iwl_mvm_fwrt_dump_end, 568 .fw_running = iwl_mvm_fwrt_fw_running, 569 }; 570 571 static struct iwl_op_mode * 572 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg, 573 const struct iwl_fw *fw, struct dentry *dbgfs_dir) 574 { 575 struct ieee80211_hw *hw; 576 struct iwl_op_mode *op_mode; 577 struct iwl_mvm *mvm; 578 struct iwl_trans_config trans_cfg = {}; 579 static const u8 no_reclaim_cmds[] = { 580 TX_CMD, 581 }; 582 int err, scan_size; 583 u32 min_backoff; 584 585 /* 586 * We use IWL_MVM_STATION_COUNT to check the validity of the station 587 * index all over the driver - check that its value corresponds to the 588 * array size. 589 */ 590 BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT); 591 592 /******************************** 593 * 1. Allocating and configuring HW data 594 ********************************/ 595 hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) + 596 sizeof(struct iwl_mvm), 597 &iwl_mvm_hw_ops); 598 if (!hw) 599 return NULL; 600 601 if (cfg->max_rx_agg_size) 602 hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size; 603 604 if (cfg->max_tx_agg_size) 605 hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size; 606 607 op_mode = hw->priv; 608 609 mvm = IWL_OP_MODE_GET_MVM(op_mode); 610 mvm->dev = trans->dev; 611 mvm->trans = trans; 612 mvm->cfg = cfg; 613 mvm->fw = fw; 614 mvm->hw = hw; 615 616 iwl_fw_runtime_init(&mvm->fwrt, trans, fw, &iwl_mvm_fwrt_ops, mvm, 617 dbgfs_dir); 618 619 mvm->init_status = 0; 620 621 if (iwl_mvm_has_new_rx_api(mvm)) { 622 op_mode->ops = &iwl_mvm_ops_mq; 623 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_desc); 624 } else { 625 op_mode->ops = &iwl_mvm_ops; 626 trans->rx_mpdu_cmd_hdr_size = 627 sizeof(struct iwl_rx_mpdu_res_start); 628 629 if (WARN_ON(trans->num_rx_queues > 1)) 630 goto out_free; 631 } 632 633 mvm->fw_restart = iwlwifi_mod_params.fw_restart ? -1 : 0; 634 635 mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE; 636 mvm->snif_queue = IWL_MVM_DQA_INJECT_MONITOR_QUEUE; 637 mvm->probe_queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE; 638 mvm->p2p_dev_queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE; 639 640 mvm->sf_state = SF_UNINIT; 641 if (iwl_mvm_has_unified_ucode(mvm)) 642 iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_REGULAR); 643 else 644 iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_INIT); 645 mvm->drop_bcn_ap_mode = true; 646 647 mutex_init(&mvm->mutex); 648 mutex_init(&mvm->d0i3_suspend_mutex); 649 spin_lock_init(&mvm->async_handlers_lock); 650 INIT_LIST_HEAD(&mvm->time_event_list); 651 INIT_LIST_HEAD(&mvm->aux_roc_te_list); 652 INIT_LIST_HEAD(&mvm->async_handlers_list); 653 spin_lock_init(&mvm->time_event_lock); 654 spin_lock_init(&mvm->queue_info_lock); 655 656 INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk); 657 INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk); 658 INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work); 659 INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work); 660 INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk); 661 INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk); 662 663 spin_lock_init(&mvm->d0i3_tx_lock); 664 spin_lock_init(&mvm->refs_lock); 665 skb_queue_head_init(&mvm->d0i3_tx); 666 init_waitqueue_head(&mvm->d0i3_exit_waitq); 667 init_waitqueue_head(&mvm->rx_sync_waitq); 668 669 atomic_set(&mvm->queue_sync_counter, 0); 670 671 SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev); 672 673 spin_lock_init(&mvm->tcm.lock); 674 INIT_DELAYED_WORK(&mvm->tcm.work, iwl_mvm_tcm_work); 675 mvm->tcm.ts = jiffies; 676 mvm->tcm.ll_ts = jiffies; 677 mvm->tcm.uapsd_nonagg_ts = jiffies; 678 679 INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork); 680 681 /* 682 * Populate the state variables that the transport layer needs 683 * to know about. 684 */ 685 trans_cfg.op_mode = op_mode; 686 trans_cfg.no_reclaim_cmds = no_reclaim_cmds; 687 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds); 688 switch (iwlwifi_mod_params.amsdu_size) { 689 case IWL_AMSDU_DEF: 690 case IWL_AMSDU_4K: 691 trans_cfg.rx_buf_size = IWL_AMSDU_4K; 692 break; 693 case IWL_AMSDU_8K: 694 trans_cfg.rx_buf_size = IWL_AMSDU_8K; 695 break; 696 case IWL_AMSDU_12K: 697 trans_cfg.rx_buf_size = IWL_AMSDU_12K; 698 break; 699 default: 700 pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME, 701 iwlwifi_mod_params.amsdu_size); 702 trans_cfg.rx_buf_size = IWL_AMSDU_4K; 703 } 704 705 /* the hardware splits the A-MSDU */ 706 if (mvm->cfg->mq_rx_supported) 707 trans_cfg.rx_buf_size = IWL_AMSDU_4K; 708 709 trans->wide_cmd_header = true; 710 trans_cfg.bc_table_dword = true; 711 712 trans_cfg.command_groups = iwl_mvm_groups; 713 trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups); 714 715 trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE; 716 trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD; 717 trans_cfg.scd_set_active = true; 718 719 trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info, 720 driver_data[2]); 721 722 trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD; 723 724 /* Set a short watchdog for the command queue */ 725 trans_cfg.cmd_q_wdg_timeout = 726 iwl_mvm_get_wd_timeout(mvm, NULL, false, true); 727 728 snprintf(mvm->hw->wiphy->fw_version, 729 sizeof(mvm->hw->wiphy->fw_version), 730 "%s", fw->fw_version); 731 732 /* Configure transport layer */ 733 iwl_trans_configure(mvm->trans, &trans_cfg); 734 735 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD; 736 trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv; 737 trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num; 738 memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv, 739 sizeof(trans->dbg_conf_tlv)); 740 trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv; 741 742 trans->iml = mvm->fw->iml; 743 trans->iml_len = mvm->fw->iml_len; 744 745 /* set up notification wait support */ 746 iwl_notification_wait_init(&mvm->notif_wait); 747 748 /* Init phy db */ 749 mvm->phy_db = iwl_phy_db_init(trans); 750 if (!mvm->phy_db) { 751 IWL_ERR(mvm, "Cannot init phy_db\n"); 752 goto out_free; 753 } 754 755 IWL_INFO(mvm, "Detected %s, REV=0x%X\n", 756 mvm->cfg->name, mvm->trans->hw_rev); 757 758 if (iwlwifi_mod_params.nvm_file) 759 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file; 760 else 761 IWL_DEBUG_EEPROM(mvm->trans->dev, 762 "working without external nvm file\n"); 763 764 err = iwl_trans_start_hw(mvm->trans); 765 if (err) 766 goto out_free; 767 768 mutex_lock(&mvm->mutex); 769 iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE); 770 err = iwl_run_init_mvm_ucode(mvm, true); 771 if (!iwlmvm_mod_params.init_dbg || !err) 772 iwl_mvm_stop_device(mvm); 773 iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE); 774 mutex_unlock(&mvm->mutex); 775 if (err < 0) { 776 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err); 777 goto out_free; 778 } 779 780 scan_size = iwl_mvm_scan_size(mvm); 781 782 mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL); 783 if (!mvm->scan_cmd) 784 goto out_free; 785 786 /* Set EBS as successful as long as not stated otherwise by the FW. */ 787 mvm->last_ebs_successful = true; 788 789 err = iwl_mvm_mac_setup_register(mvm); 790 if (err) 791 goto out_free; 792 mvm->hw_registered = true; 793 794 min_backoff = iwl_mvm_min_backoff(mvm); 795 iwl_mvm_thermal_initialize(mvm, min_backoff); 796 797 err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir); 798 if (err) 799 goto out_unregister; 800 801 if (!iwl_mvm_has_new_rx_stats_api(mvm)) 802 memset(&mvm->rx_stats_v3, 0, 803 sizeof(struct mvm_statistics_rx_v3)); 804 else 805 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx)); 806 807 /* The transport always starts with a taken reference, we can 808 * release it now if d0i3 is supported */ 809 if (iwl_mvm_is_d0i3_supported(mvm)) 810 iwl_trans_unref(mvm->trans); 811 812 iwl_mvm_tof_init(mvm); 813 814 return op_mode; 815 816 out_unregister: 817 if (iwlmvm_mod_params.init_dbg) 818 return op_mode; 819 820 ieee80211_unregister_hw(mvm->hw); 821 mvm->hw_registered = false; 822 iwl_mvm_leds_exit(mvm); 823 iwl_mvm_thermal_exit(mvm); 824 out_free: 825 iwl_fw_flush_dump(&mvm->fwrt); 826 827 if (iwlmvm_mod_params.init_dbg) 828 return op_mode; 829 iwl_phy_db_free(mvm->phy_db); 830 kfree(mvm->scan_cmd); 831 iwl_trans_op_mode_leave(trans); 832 833 ieee80211_free_hw(mvm->hw); 834 return NULL; 835 } 836 837 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode) 838 { 839 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 840 int i; 841 842 /* If d0i3 is supported, we have released the reference that 843 * the transport started with, so we should take it back now 844 * that we are leaving. 845 */ 846 if (iwl_mvm_is_d0i3_supported(mvm)) 847 iwl_trans_ref(mvm->trans); 848 849 iwl_mvm_leds_exit(mvm); 850 851 iwl_mvm_thermal_exit(mvm); 852 853 if (mvm->init_status & IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE) { 854 ieee80211_unregister_hw(mvm->hw); 855 mvm->init_status &= ~IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE; 856 } 857 858 kfree(mvm->scan_cmd); 859 kfree(mvm->mcast_filter_cmd); 860 mvm->mcast_filter_cmd = NULL; 861 862 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS) 863 kfree(mvm->d3_resume_sram); 864 #endif 865 iwl_trans_op_mode_leave(mvm->trans); 866 867 iwl_phy_db_free(mvm->phy_db); 868 mvm->phy_db = NULL; 869 870 kfree(mvm->nvm_data); 871 for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++) 872 kfree(mvm->nvm_sections[i].data); 873 874 cancel_delayed_work_sync(&mvm->tcm.work); 875 876 iwl_mvm_tof_clean(mvm); 877 878 mutex_destroy(&mvm->mutex); 879 mutex_destroy(&mvm->d0i3_suspend_mutex); 880 881 ieee80211_free_hw(mvm->hw); 882 } 883 884 struct iwl_async_handler_entry { 885 struct list_head list; 886 struct iwl_rx_cmd_buffer rxb; 887 enum iwl_rx_handler_context context; 888 void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb); 889 }; 890 891 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm) 892 { 893 struct iwl_async_handler_entry *entry, *tmp; 894 895 spin_lock_bh(&mvm->async_handlers_lock); 896 list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) { 897 iwl_free_rxb(&entry->rxb); 898 list_del(&entry->list); 899 kfree(entry); 900 } 901 spin_unlock_bh(&mvm->async_handlers_lock); 902 } 903 904 static void iwl_mvm_async_handlers_wk(struct work_struct *wk) 905 { 906 struct iwl_mvm *mvm = 907 container_of(wk, struct iwl_mvm, async_handlers_wk); 908 struct iwl_async_handler_entry *entry, *tmp; 909 LIST_HEAD(local_list); 910 911 /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */ 912 913 /* 914 * Sync with Rx path with a lock. Remove all the entries from this list, 915 * add them to a local one (lock free), and then handle them. 916 */ 917 spin_lock_bh(&mvm->async_handlers_lock); 918 list_splice_init(&mvm->async_handlers_list, &local_list); 919 spin_unlock_bh(&mvm->async_handlers_lock); 920 921 list_for_each_entry_safe(entry, tmp, &local_list, list) { 922 if (entry->context == RX_HANDLER_ASYNC_LOCKED) 923 mutex_lock(&mvm->mutex); 924 entry->fn(mvm, &entry->rxb); 925 iwl_free_rxb(&entry->rxb); 926 list_del(&entry->list); 927 if (entry->context == RX_HANDLER_ASYNC_LOCKED) 928 mutex_unlock(&mvm->mutex); 929 kfree(entry); 930 } 931 } 932 933 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm, 934 struct iwl_rx_packet *pkt) 935 { 936 struct iwl_fw_dbg_trigger_tlv *trig; 937 struct iwl_fw_dbg_trigger_cmd *cmds_trig; 938 int i; 939 940 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF)) 941 return; 942 943 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF); 944 cmds_trig = (void *)trig->data; 945 946 if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt, NULL, trig)) 947 return; 948 949 for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) { 950 /* don't collect on CMD 0 */ 951 if (!cmds_trig->cmds[i].cmd_id) 952 break; 953 954 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd || 955 cmds_trig->cmds[i].group_id != pkt->hdr.group_id) 956 continue; 957 958 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 959 "CMD 0x%02x.%02x received", 960 pkt->hdr.group_id, pkt->hdr.cmd); 961 break; 962 } 963 } 964 965 static void iwl_mvm_rx_common(struct iwl_mvm *mvm, 966 struct iwl_rx_cmd_buffer *rxb, 967 struct iwl_rx_packet *pkt) 968 { 969 int i; 970 971 iwl_mvm_rx_check_trigger(mvm, pkt); 972 973 /* 974 * Do the notification wait before RX handlers so 975 * even if the RX handler consumes the RXB we have 976 * access to it in the notification wait entry. 977 */ 978 iwl_notification_wait_notify(&mvm->notif_wait, pkt); 979 980 for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) { 981 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i]; 982 struct iwl_async_handler_entry *entry; 983 984 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) 985 continue; 986 987 if (rx_h->context == RX_HANDLER_SYNC) { 988 rx_h->fn(mvm, rxb); 989 return; 990 } 991 992 entry = kzalloc(sizeof(*entry), GFP_ATOMIC); 993 /* we can't do much... */ 994 if (!entry) 995 return; 996 997 entry->rxb._page = rxb_steal_page(rxb); 998 entry->rxb._offset = rxb->_offset; 999 entry->rxb._rx_page_order = rxb->_rx_page_order; 1000 entry->fn = rx_h->fn; 1001 entry->context = rx_h->context; 1002 spin_lock(&mvm->async_handlers_lock); 1003 list_add_tail(&entry->list, &mvm->async_handlers_list); 1004 spin_unlock(&mvm->async_handlers_lock); 1005 schedule_work(&mvm->async_handlers_wk); 1006 return; 1007 } 1008 1009 iwl_fwrt_handle_notification(&mvm->fwrt, rxb); 1010 } 1011 1012 static void iwl_mvm_rx(struct iwl_op_mode *op_mode, 1013 struct napi_struct *napi, 1014 struct iwl_rx_cmd_buffer *rxb) 1015 { 1016 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1017 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1018 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); 1019 1020 if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))) 1021 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb); 1022 else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD)) 1023 iwl_mvm_rx_rx_phy_cmd(mvm, rxb); 1024 else 1025 iwl_mvm_rx_common(mvm, rxb, pkt); 1026 } 1027 1028 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode, 1029 struct napi_struct *napi, 1030 struct iwl_rx_cmd_buffer *rxb) 1031 { 1032 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1033 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1034 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); 1035 1036 if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))) 1037 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0); 1038 else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP, 1039 RX_QUEUES_NOTIFICATION))) 1040 iwl_mvm_rx_queue_notif(mvm, rxb, 0); 1041 else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)) 1042 iwl_mvm_rx_frame_release(mvm, napi, rxb, 0); 1043 else 1044 iwl_mvm_rx_common(mvm, rxb, pkt); 1045 } 1046 1047 void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq) 1048 { 1049 int q; 1050 1051 if (WARN_ON_ONCE(!mq)) 1052 return; 1053 1054 for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) { 1055 if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) { 1056 IWL_DEBUG_TX_QUEUES(mvm, 1057 "mac80211 %d already stopped\n", q); 1058 continue; 1059 } 1060 1061 ieee80211_stop_queue(mvm->hw, q); 1062 } 1063 } 1064 1065 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode, 1066 const struct iwl_device_cmd *cmd) 1067 { 1068 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1069 1070 /* 1071 * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA 1072 * commands that need to block the Tx queues. 1073 */ 1074 iwl_trans_block_txq_ptrs(mvm->trans, false); 1075 } 1076 1077 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue) 1078 { 1079 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1080 unsigned long mq; 1081 1082 spin_lock_bh(&mvm->queue_info_lock); 1083 mq = mvm->hw_queue_to_mac80211[hw_queue]; 1084 spin_unlock_bh(&mvm->queue_info_lock); 1085 1086 iwl_mvm_stop_mac_queues(mvm, mq); 1087 } 1088 1089 void iwl_mvm_start_mac_queues(struct iwl_mvm *mvm, unsigned long mq) 1090 { 1091 int q; 1092 1093 if (WARN_ON_ONCE(!mq)) 1094 return; 1095 1096 for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) { 1097 if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) { 1098 IWL_DEBUG_TX_QUEUES(mvm, 1099 "mac80211 %d still stopped\n", q); 1100 continue; 1101 } 1102 1103 ieee80211_wake_queue(mvm->hw, q); 1104 } 1105 } 1106 1107 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue) 1108 { 1109 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1110 unsigned long mq; 1111 1112 spin_lock_bh(&mvm->queue_info_lock); 1113 mq = mvm->hw_queue_to_mac80211[hw_queue]; 1114 spin_unlock_bh(&mvm->queue_info_lock); 1115 1116 iwl_mvm_start_mac_queues(mvm, mq); 1117 } 1118 1119 static void iwl_mvm_set_rfkill_state(struct iwl_mvm *mvm) 1120 { 1121 bool state = iwl_mvm_is_radio_killed(mvm); 1122 1123 if (state) 1124 wake_up(&mvm->rx_sync_waitq); 1125 1126 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, state); 1127 } 1128 1129 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state) 1130 { 1131 if (state) 1132 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); 1133 else 1134 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); 1135 1136 iwl_mvm_set_rfkill_state(mvm); 1137 } 1138 1139 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state) 1140 { 1141 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1142 bool calibrating = READ_ONCE(mvm->calibrating); 1143 1144 if (state) 1145 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); 1146 else 1147 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); 1148 1149 iwl_mvm_set_rfkill_state(mvm); 1150 1151 /* iwl_run_init_mvm_ucode is waiting for results, abort it */ 1152 if (calibrating) 1153 iwl_abort_notification_waits(&mvm->notif_wait); 1154 1155 /* 1156 * Stop the device if we run OPERATIONAL firmware or if we are in the 1157 * middle of the calibrations. 1158 */ 1159 return state && (mvm->fwrt.cur_fw_img != IWL_UCODE_INIT || calibrating); 1160 } 1161 1162 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb) 1163 { 1164 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1165 struct ieee80211_tx_info *info; 1166 1167 info = IEEE80211_SKB_CB(skb); 1168 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]); 1169 ieee80211_free_txskb(mvm->hw, skb); 1170 } 1171 1172 struct iwl_mvm_reprobe { 1173 struct device *dev; 1174 struct work_struct work; 1175 }; 1176 1177 static void iwl_mvm_reprobe_wk(struct work_struct *wk) 1178 { 1179 struct iwl_mvm_reprobe *reprobe; 1180 1181 reprobe = container_of(wk, struct iwl_mvm_reprobe, work); 1182 if (device_reprobe(reprobe->dev)) 1183 dev_err(reprobe->dev, "reprobe failed!\n"); 1184 kfree(reprobe); 1185 module_put(THIS_MODULE); 1186 } 1187 1188 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error) 1189 { 1190 iwl_abort_notification_waits(&mvm->notif_wait); 1191 1192 /* 1193 * This is a bit racy, but worst case we tell mac80211 about 1194 * a stopped/aborted scan when that was already done which 1195 * is not a problem. It is necessary to abort any os scan 1196 * here because mac80211 requires having the scan cleared 1197 * before restarting. 1198 * We'll reset the scan_status to NONE in restart cleanup in 1199 * the next start() call from mac80211. If restart isn't called 1200 * (no fw restart) scan status will stay busy. 1201 */ 1202 iwl_mvm_report_scan_aborted(mvm); 1203 1204 /* 1205 * If we're restarting already, don't cycle restarts. 1206 * If INIT fw asserted, it will likely fail again. 1207 * If WoWLAN fw asserted, don't restart either, mac80211 1208 * can't recover this since we're already half suspended. 1209 */ 1210 if (!mvm->fw_restart && fw_error) { 1211 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert, 1212 NULL); 1213 } else if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1214 struct iwl_mvm_reprobe *reprobe; 1215 1216 IWL_ERR(mvm, 1217 "Firmware error during reconfiguration - reprobe!\n"); 1218 1219 /* 1220 * get a module reference to avoid doing this while unloading 1221 * anyway and to avoid scheduling a work with code that's 1222 * being removed. 1223 */ 1224 if (!try_module_get(THIS_MODULE)) { 1225 IWL_ERR(mvm, "Module is being unloaded - abort\n"); 1226 return; 1227 } 1228 1229 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC); 1230 if (!reprobe) { 1231 module_put(THIS_MODULE); 1232 return; 1233 } 1234 reprobe->dev = mvm->trans->dev; 1235 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk); 1236 schedule_work(&reprobe->work); 1237 } else if (mvm->fwrt.cur_fw_img == IWL_UCODE_REGULAR && 1238 mvm->hw_registered) { 1239 /* don't let the transport/FW power down */ 1240 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); 1241 1242 if (fw_error && mvm->fw_restart > 0) 1243 mvm->fw_restart--; 1244 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); 1245 ieee80211_restart_hw(mvm->hw); 1246 } 1247 } 1248 1249 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode) 1250 { 1251 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1252 1253 iwl_mvm_dump_nic_error_log(mvm); 1254 1255 iwl_mvm_nic_restart(mvm, true); 1256 } 1257 1258 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode) 1259 { 1260 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1261 1262 WARN_ON(1); 1263 iwl_mvm_nic_restart(mvm, true); 1264 } 1265 1266 struct iwl_d0i3_iter_data { 1267 struct iwl_mvm *mvm; 1268 struct ieee80211_vif *connected_vif; 1269 u8 ap_sta_id; 1270 u8 vif_count; 1271 u8 offloading_tid; 1272 bool disable_offloading; 1273 }; 1274 1275 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm, 1276 struct ieee80211_vif *vif, 1277 struct iwl_d0i3_iter_data *iter_data) 1278 { 1279 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1280 struct iwl_mvm_sta *mvmsta; 1281 u32 available_tids = 0; 1282 u8 tid; 1283 1284 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION || 1285 mvmvif->ap_sta_id == IWL_MVM_INVALID_STA)) 1286 return false; 1287 1288 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); 1289 if (!mvmsta) 1290 return false; 1291 1292 spin_lock_bh(&mvmsta->lock); 1293 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1294 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 1295 1296 /* 1297 * in case of pending tx packets, don't use this tid 1298 * for offloading in order to prevent reuse of the same 1299 * qos seq counters. 1300 */ 1301 if (iwl_mvm_tid_queued(mvm, tid_data)) 1302 continue; 1303 1304 if (tid_data->state != IWL_AGG_OFF) 1305 continue; 1306 1307 available_tids |= BIT(tid); 1308 } 1309 spin_unlock_bh(&mvmsta->lock); 1310 1311 /* 1312 * disallow protocol offloading if we have no available tid 1313 * (with no pending frames and no active aggregation, 1314 * as we don't handle "holes" properly - the scheduler needs the 1315 * frame's seq number and TFD index to match) 1316 */ 1317 if (!available_tids) 1318 return true; 1319 1320 /* for simplicity, just use the first available tid */ 1321 iter_data->offloading_tid = ffs(available_tids) - 1; 1322 return false; 1323 } 1324 1325 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac, 1326 struct ieee80211_vif *vif) 1327 { 1328 struct iwl_d0i3_iter_data *data = _data; 1329 struct iwl_mvm *mvm = data->mvm; 1330 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1331 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; 1332 1333 IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr); 1334 if (vif->type != NL80211_IFTYPE_STATION || 1335 !vif->bss_conf.assoc) 1336 return; 1337 1338 /* 1339 * in case of pending tx packets or active aggregations, 1340 * avoid offloading features in order to prevent reuse of 1341 * the same qos seq counters. 1342 */ 1343 if (iwl_mvm_disallow_offloading(mvm, vif, data)) 1344 data->disable_offloading = true; 1345 1346 iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags); 1347 iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading, 1348 false, flags); 1349 1350 /* 1351 * on init/association, mvm already configures POWER_TABLE_CMD 1352 * and REPLY_MCAST_FILTER_CMD, so currently don't 1353 * reconfigure them (we might want to use different 1354 * params later on, though). 1355 */ 1356 data->ap_sta_id = mvmvif->ap_sta_id; 1357 data->vif_count++; 1358 1359 /* 1360 * no new commands can be sent at this stage, so it's safe 1361 * to save the vif pointer during d0i3 entrance. 1362 */ 1363 data->connected_vif = vif; 1364 } 1365 1366 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm, 1367 struct iwl_wowlan_config_cmd *cmd, 1368 struct iwl_d0i3_iter_data *iter_data) 1369 { 1370 struct ieee80211_sta *ap_sta; 1371 struct iwl_mvm_sta *mvm_ap_sta; 1372 1373 if (iter_data->ap_sta_id == IWL_MVM_INVALID_STA) 1374 return; 1375 1376 rcu_read_lock(); 1377 1378 ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]); 1379 if (IS_ERR_OR_NULL(ap_sta)) 1380 goto out; 1381 1382 mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta); 1383 cmd->is_11n_connection = ap_sta->ht_cap.ht_supported; 1384 cmd->offloading_tid = iter_data->offloading_tid; 1385 cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING | 1386 ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON; 1387 /* 1388 * The d0i3 uCode takes care of the nonqos counters, 1389 * so configure only the qos seq ones. 1390 */ 1391 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd); 1392 out: 1393 rcu_read_unlock(); 1394 } 1395 1396 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode) 1397 { 1398 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1399 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; 1400 int ret; 1401 struct iwl_d0i3_iter_data d0i3_iter_data = { 1402 .mvm = mvm, 1403 }; 1404 struct iwl_wowlan_config_cmd wowlan_config_cmd = { 1405 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME | 1406 IWL_WOWLAN_WAKEUP_BEACON_MISS | 1407 IWL_WOWLAN_WAKEUP_LINK_CHANGE), 1408 }; 1409 struct iwl_d3_manager_config d3_cfg_cmd = { 1410 .min_sleep_time = cpu_to_le32(1000), 1411 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR), 1412 }; 1413 1414 IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n"); 1415 1416 if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR)) 1417 return -EINVAL; 1418 1419 set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1420 1421 /* 1422 * iwl_mvm_ref_sync takes a reference before checking the flag. 1423 * so by checking there is no held reference we prevent a state 1424 * in which iwl_mvm_ref_sync continues successfully while we 1425 * configure the firmware to enter d0i3 1426 */ 1427 if (iwl_mvm_ref_taken(mvm)) { 1428 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n"); 1429 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1430 wake_up(&mvm->d0i3_exit_waitq); 1431 return 1; 1432 } 1433 1434 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1435 IEEE80211_IFACE_ITER_NORMAL, 1436 iwl_mvm_enter_d0i3_iterator, 1437 &d0i3_iter_data); 1438 if (d0i3_iter_data.vif_count == 1) { 1439 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id; 1440 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading; 1441 } else { 1442 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1); 1443 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA; 1444 mvm->d0i3_offloading = false; 1445 } 1446 1447 iwl_mvm_pause_tcm(mvm, true); 1448 /* make sure we have no running tx while configuring the seqno */ 1449 synchronize_net(); 1450 1451 /* Flush the hw queues, in case something got queued during entry */ 1452 /* TODO new tx api */ 1453 if (iwl_mvm_has_new_tx_api(mvm)) { 1454 WARN_ONCE(1, "d0i3: Need to implement flush TX queue\n"); 1455 } else { 1456 ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm), 1457 flags); 1458 if (ret) 1459 return ret; 1460 } 1461 1462 /* configure wowlan configuration only if needed */ 1463 if (mvm->d0i3_ap_sta_id != IWL_MVM_INVALID_STA) { 1464 /* wake on beacons only if beacon storing isn't supported */ 1465 if (!fw_has_capa(&mvm->fw->ucode_capa, 1466 IWL_UCODE_TLV_CAPA_BEACON_STORING)) 1467 wowlan_config_cmd.wakeup_filter |= 1468 cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING); 1469 1470 iwl_mvm_wowlan_config_key_params(mvm, 1471 d0i3_iter_data.connected_vif, 1472 true, flags); 1473 1474 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd, 1475 &d0i3_iter_data); 1476 1477 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags, 1478 sizeof(wowlan_config_cmd), 1479 &wowlan_config_cmd); 1480 if (ret) 1481 return ret; 1482 } 1483 1484 return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD, 1485 flags | CMD_MAKE_TRANS_IDLE, 1486 sizeof(d3_cfg_cmd), &d3_cfg_cmd); 1487 } 1488 1489 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac, 1490 struct ieee80211_vif *vif) 1491 { 1492 struct iwl_mvm *mvm = _data; 1493 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO; 1494 1495 IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr); 1496 if (vif->type != NL80211_IFTYPE_STATION || 1497 !vif->bss_conf.assoc) 1498 return; 1499 1500 iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags); 1501 } 1502 1503 struct iwl_mvm_d0i3_exit_work_iter_data { 1504 struct iwl_mvm *mvm; 1505 struct iwl_wowlan_status *status; 1506 u32 wakeup_reasons; 1507 }; 1508 1509 static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac, 1510 struct ieee80211_vif *vif) 1511 { 1512 struct iwl_mvm_d0i3_exit_work_iter_data *data = _data; 1513 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1514 u32 reasons = data->wakeup_reasons; 1515 1516 /* consider only the relevant station interface */ 1517 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc || 1518 data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id) 1519 return; 1520 1521 if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH) 1522 iwl_mvm_connection_loss(data->mvm, vif, "D0i3"); 1523 else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON) 1524 ieee80211_beacon_loss(vif); 1525 else 1526 iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status); 1527 } 1528 1529 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq) 1530 { 1531 struct ieee80211_sta *sta = NULL; 1532 struct iwl_mvm_sta *mvm_ap_sta; 1533 int i; 1534 bool wake_queues = false; 1535 1536 lockdep_assert_held(&mvm->mutex); 1537 1538 spin_lock_bh(&mvm->d0i3_tx_lock); 1539 1540 if (mvm->d0i3_ap_sta_id == IWL_MVM_INVALID_STA) 1541 goto out; 1542 1543 IWL_DEBUG_RPM(mvm, "re-enqueue packets\n"); 1544 1545 /* get the sta in order to update seq numbers and re-enqueue skbs */ 1546 sta = rcu_dereference_protected( 1547 mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id], 1548 lockdep_is_held(&mvm->mutex)); 1549 1550 if (IS_ERR_OR_NULL(sta)) { 1551 sta = NULL; 1552 goto out; 1553 } 1554 1555 if (mvm->d0i3_offloading && qos_seq) { 1556 /* update qos seq numbers if offloading was enabled */ 1557 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta); 1558 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1559 u16 seq = le16_to_cpu(qos_seq[i]); 1560 /* firmware stores last-used one, we store next one */ 1561 seq += 0x10; 1562 mvm_ap_sta->tid_data[i].seq_number = seq; 1563 } 1564 } 1565 out: 1566 /* re-enqueue (or drop) all packets */ 1567 while (!skb_queue_empty(&mvm->d0i3_tx)) { 1568 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx); 1569 1570 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta)) 1571 ieee80211_free_txskb(mvm->hw, skb); 1572 1573 /* if the skb_queue is not empty, we need to wake queues */ 1574 wake_queues = true; 1575 } 1576 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1577 wake_up(&mvm->d0i3_exit_waitq); 1578 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA; 1579 if (wake_queues) 1580 ieee80211_wake_queues(mvm->hw); 1581 1582 spin_unlock_bh(&mvm->d0i3_tx_lock); 1583 } 1584 1585 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk) 1586 { 1587 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work); 1588 struct iwl_host_cmd get_status_cmd = { 1589 .id = WOWLAN_GET_STATUSES, 1590 .flags = CMD_HIGH_PRIO | CMD_WANT_SKB, 1591 }; 1592 struct iwl_mvm_d0i3_exit_work_iter_data iter_data = { 1593 .mvm = mvm, 1594 }; 1595 1596 struct iwl_wowlan_status *status; 1597 int ret; 1598 u32 wakeup_reasons = 0; 1599 __le16 *qos_seq = NULL; 1600 1601 mutex_lock(&mvm->mutex); 1602 ret = iwl_mvm_send_cmd(mvm, &get_status_cmd); 1603 if (ret) 1604 goto out; 1605 1606 status = (void *)get_status_cmd.resp_pkt->data; 1607 wakeup_reasons = le32_to_cpu(status->wakeup_reasons); 1608 qos_seq = status->qos_seq_ctr; 1609 1610 IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons); 1611 1612 iter_data.wakeup_reasons = wakeup_reasons; 1613 iter_data.status = status; 1614 ieee80211_iterate_active_interfaces(mvm->hw, 1615 IEEE80211_IFACE_ITER_NORMAL, 1616 iwl_mvm_d0i3_exit_work_iter, 1617 &iter_data); 1618 out: 1619 iwl_mvm_d0i3_enable_tx(mvm, qos_seq); 1620 1621 IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n", 1622 wakeup_reasons); 1623 1624 /* qos_seq might point inside resp_pkt, so free it only now */ 1625 if (get_status_cmd.resp_pkt) 1626 iwl_free_resp(&get_status_cmd); 1627 1628 /* the FW might have updated the regdomain */ 1629 iwl_mvm_update_changed_regdom(mvm); 1630 1631 iwl_mvm_resume_tcm(mvm); 1632 iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK); 1633 mutex_unlock(&mvm->mutex); 1634 } 1635 1636 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm) 1637 { 1638 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE | 1639 CMD_WAKE_UP_TRANS; 1640 int ret; 1641 1642 IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n"); 1643 1644 if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR)) 1645 return -EINVAL; 1646 1647 mutex_lock(&mvm->d0i3_suspend_mutex); 1648 if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) { 1649 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n"); 1650 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags); 1651 mutex_unlock(&mvm->d0i3_suspend_mutex); 1652 return 0; 1653 } 1654 mutex_unlock(&mvm->d0i3_suspend_mutex); 1655 1656 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL); 1657 if (ret) 1658 goto out; 1659 1660 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1661 IEEE80211_IFACE_ITER_NORMAL, 1662 iwl_mvm_exit_d0i3_iterator, 1663 mvm); 1664 out: 1665 schedule_work(&mvm->d0i3_exit_work); 1666 return ret; 1667 } 1668 1669 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode) 1670 { 1671 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1672 1673 iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK); 1674 return _iwl_mvm_exit_d0i3(mvm); 1675 } 1676 1677 #define IWL_MVM_COMMON_OPS \ 1678 /* these could be differentiated */ \ 1679 .async_cb = iwl_mvm_async_cb, \ 1680 .queue_full = iwl_mvm_stop_sw_queue, \ 1681 .queue_not_full = iwl_mvm_wake_sw_queue, \ 1682 .hw_rf_kill = iwl_mvm_set_hw_rfkill_state, \ 1683 .free_skb = iwl_mvm_free_skb, \ 1684 .nic_error = iwl_mvm_nic_error, \ 1685 .cmd_queue_full = iwl_mvm_cmd_queue_full, \ 1686 .nic_config = iwl_mvm_nic_config, \ 1687 .enter_d0i3 = iwl_mvm_enter_d0i3, \ 1688 .exit_d0i3 = iwl_mvm_exit_d0i3, \ 1689 /* as we only register one, these MUST be common! */ \ 1690 .start = iwl_op_mode_mvm_start, \ 1691 .stop = iwl_op_mode_mvm_stop 1692 1693 static const struct iwl_op_mode_ops iwl_mvm_ops = { 1694 IWL_MVM_COMMON_OPS, 1695 .rx = iwl_mvm_rx, 1696 }; 1697 1698 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode, 1699 struct napi_struct *napi, 1700 struct iwl_rx_cmd_buffer *rxb, 1701 unsigned int queue) 1702 { 1703 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1704 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1705 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); 1706 1707 if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))) 1708 iwl_mvm_rx_frame_release(mvm, napi, rxb, queue); 1709 else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP, 1710 RX_QUEUES_NOTIFICATION))) 1711 iwl_mvm_rx_queue_notif(mvm, rxb, queue); 1712 else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))) 1713 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue); 1714 } 1715 1716 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = { 1717 IWL_MVM_COMMON_OPS, 1718 .rx = iwl_mvm_rx_mq, 1719 .rx_rss = iwl_mvm_rx_mq_rss, 1720 }; 1721