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 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of version 2 of the GNU General Public License as 14 * published by the Free Software Foundation. 15 * 16 * This program is distributed in the hope that it will be useful, but 17 * WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 19 * General Public License for more details. 20 * 21 * You should have received a copy of the GNU General Public License 22 * along with this program; if not, write to the Free Software 23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, 24 * USA 25 * 26 * The full GNU General Public License is included in this distribution 27 * in the file called COPYING. 28 * 29 * Contact Information: 30 * Intel Linux Wireless <linuxwifi@intel.com> 31 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 32 * 33 * BSD LICENSE 34 * 35 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 36 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 37 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH 38 * All rights reserved. 39 * 40 * Redistribution and use in source and binary forms, with or without 41 * modification, are permitted provided that the following conditions 42 * are met: 43 * 44 * * Redistributions of source code must retain the above copyright 45 * notice, this list of conditions and the following disclaimer. 46 * * Redistributions in binary form must reproduce the above copyright 47 * notice, this list of conditions and the following disclaimer in 48 * the documentation and/or other materials provided with the 49 * distribution. 50 * * Neither the name Intel Corporation nor the names of its 51 * contributors may be used to endorse or promote products derived 52 * from this software without specific prior written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 55 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 56 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 57 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 58 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 59 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 60 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 61 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 62 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 63 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 64 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 65 * 66 *****************************************************************************/ 67 #include <linux/module.h> 68 #include <linux/vmalloc.h> 69 #include <net/mac80211.h> 70 71 #include "fw/notif-wait.h" 72 #include "iwl-trans.h" 73 #include "iwl-op-mode.h" 74 #include "fw/img.h" 75 #include "iwl-debug.h" 76 #include "iwl-drv.h" 77 #include "iwl-modparams.h" 78 #include "mvm.h" 79 #include "iwl-phy-db.h" 80 #include "iwl-eeprom-parse.h" 81 #include "iwl-csr.h" 82 #include "iwl-io.h" 83 #include "iwl-prph.h" 84 #include "rs.h" 85 #include "fw/api/scan.h" 86 #include "time-event.h" 87 #include "fw-api.h" 88 #include "fw/api/scan.h" 89 #include "fw/acpi.h" 90 91 #define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux" 92 MODULE_DESCRIPTION(DRV_DESCRIPTION); 93 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR); 94 MODULE_LICENSE("GPL"); 95 96 static const struct iwl_op_mode_ops iwl_mvm_ops; 97 static const struct iwl_op_mode_ops iwl_mvm_ops_mq; 98 99 struct iwl_mvm_mod_params iwlmvm_mod_params = { 100 .power_scheme = IWL_POWER_SCHEME_BPS, 101 .tfd_q_hang_detect = true 102 /* rest of fields are 0 by default */ 103 }; 104 105 module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, S_IRUGO); 106 MODULE_PARM_DESC(init_dbg, 107 "set to true to debug an ASSERT in INIT fw (default: false"); 108 module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, S_IRUGO); 109 MODULE_PARM_DESC(power_scheme, 110 "power management scheme: 1-active, 2-balanced, 3-low power, default: 2"); 111 module_param_named(tfd_q_hang_detect, iwlmvm_mod_params.tfd_q_hang_detect, 112 bool, S_IRUGO); 113 MODULE_PARM_DESC(tfd_q_hang_detect, 114 "TFD queues hang detection (default: true"); 115 116 /* 117 * module init and exit functions 118 */ 119 static int __init iwl_mvm_init(void) 120 { 121 int ret; 122 123 ret = iwl_mvm_rate_control_register(); 124 if (ret) { 125 pr_err("Unable to register rate control algorithm: %d\n", ret); 126 return ret; 127 } 128 129 ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops); 130 if (ret) 131 pr_err("Unable to register MVM op_mode: %d\n", ret); 132 133 return ret; 134 } 135 module_init(iwl_mvm_init); 136 137 static void __exit iwl_mvm_exit(void) 138 { 139 iwl_opmode_deregister("iwlmvm"); 140 iwl_mvm_rate_control_unregister(); 141 } 142 module_exit(iwl_mvm_exit); 143 144 static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode) 145 { 146 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 147 u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash; 148 u32 reg_val = 0; 149 u32 phy_config = iwl_mvm_get_phy_config(mvm); 150 151 radio_cfg_type = (phy_config & FW_PHY_CFG_RADIO_TYPE) >> 152 FW_PHY_CFG_RADIO_TYPE_POS; 153 radio_cfg_step = (phy_config & FW_PHY_CFG_RADIO_STEP) >> 154 FW_PHY_CFG_RADIO_STEP_POS; 155 radio_cfg_dash = (phy_config & FW_PHY_CFG_RADIO_DASH) >> 156 FW_PHY_CFG_RADIO_DASH_POS; 157 158 /* SKU control */ 159 reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) << 160 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP; 161 reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) << 162 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH; 163 164 /* radio configuration */ 165 reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE; 166 reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP; 167 reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH; 168 169 WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) & 170 ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE); 171 172 /* 173 * TODO: Bits 7-8 of CSR in 8000 HW family and higher set the ADC 174 * sampling, and shouldn't be set to any non-zero value. 175 * The same is supposed to be true of the other HW, but unsetting 176 * them (such as the 7260) causes automatic tests to fail on seemingly 177 * unrelated errors. Need to further investigate this, but for now 178 * we'll separate cases. 179 */ 180 if (mvm->trans->cfg->device_family < IWL_DEVICE_FAMILY_8000) 181 reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI; 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 reg_val); 192 193 IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type, 194 radio_cfg_step, radio_cfg_dash); 195 196 /* 197 * W/A : NIC is stuck in a reset state after Early PCIe power off 198 * (PCIe power is lost before PERST# is asserted), causing ME FW 199 * to lose ownership and not being able to obtain it back. 200 */ 201 if (!mvm->trans->cfg->apmg_not_supported) 202 iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG, 203 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS, 204 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS); 205 } 206 207 /** 208 * enum iwl_rx_handler_context context for Rx handler 209 * @RX_HANDLER_SYNC : this means that it will be called in the Rx path 210 * which can't acquire mvm->mutex. 211 * @RX_HANDLER_ASYNC_LOCKED : If the handler needs to hold mvm->mutex 212 * (and only in this case!), it should be set as ASYNC. In that case, 213 * it will be called from a worker with mvm->mutex held. 214 * @RX_HANDLER_ASYNC_UNLOCKED : in case the handler needs to lock the 215 * mutex itself, it will be called from a worker without mvm->mutex held. 216 */ 217 enum iwl_rx_handler_context { 218 RX_HANDLER_SYNC, 219 RX_HANDLER_ASYNC_LOCKED, 220 RX_HANDLER_ASYNC_UNLOCKED, 221 }; 222 223 /** 224 * struct iwl_rx_handlers handler for FW notification 225 * @cmd_id: command id 226 * @context: see &iwl_rx_handler_context 227 * @fn: the function is called when notification is received 228 */ 229 struct iwl_rx_handlers { 230 u16 cmd_id; 231 enum iwl_rx_handler_context context; 232 void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb); 233 }; 234 235 #define RX_HANDLER(_cmd_id, _fn, _context) \ 236 { .cmd_id = _cmd_id, .fn = _fn, .context = _context } 237 #define RX_HANDLER_GRP(_grp, _cmd, _fn, _context) \ 238 { .cmd_id = WIDE_ID(_grp, _cmd), .fn = _fn, .context = _context } 239 240 /* 241 * Handlers for fw notifications 242 * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME 243 * This list should be in order of frequency for performance purposes. 244 * 245 * The handler can be one from three contexts, see &iwl_rx_handler_context 246 */ 247 static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = { 248 RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, RX_HANDLER_SYNC), 249 RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, RX_HANDLER_SYNC), 250 251 RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif, 252 RX_HANDLER_ASYNC_LOCKED), 253 RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif, 254 RX_HANDLER_ASYNC_LOCKED), 255 RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics, 256 RX_HANDLER_ASYNC_LOCKED), 257 258 RX_HANDLER(BA_WINDOW_STATUS_NOTIFICATION_ID, 259 iwl_mvm_window_status_notif, RX_HANDLER_SYNC), 260 261 RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif, 262 RX_HANDLER_SYNC), 263 RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc, 264 RX_HANDLER_ASYNC_LOCKED), 265 266 RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, RX_HANDLER_SYNC), 267 268 RX_HANDLER(SCAN_ITERATION_COMPLETE, 269 iwl_mvm_rx_lmac_scan_iter_complete_notif, RX_HANDLER_SYNC), 270 RX_HANDLER(SCAN_OFFLOAD_COMPLETE, 271 iwl_mvm_rx_lmac_scan_complete_notif, 272 RX_HANDLER_ASYNC_LOCKED), 273 RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_match_found, 274 RX_HANDLER_SYNC), 275 RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif, 276 RX_HANDLER_ASYNC_LOCKED), 277 RX_HANDLER(SCAN_ITERATION_COMPLETE_UMAC, 278 iwl_mvm_rx_umac_scan_iter_complete_notif, RX_HANDLER_SYNC), 279 280 RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif, 281 RX_HANDLER_SYNC), 282 283 RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif, 284 RX_HANDLER_SYNC), 285 286 RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, RX_HANDLER_SYNC), 287 RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION, 288 iwl_mvm_power_uapsd_misbehaving_ap_notif, RX_HANDLER_SYNC), 289 RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif, 290 RX_HANDLER_ASYNC_LOCKED), 291 RX_HANDLER_GRP(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE, 292 iwl_mvm_temp_notif, RX_HANDLER_ASYNC_UNLOCKED), 293 RX_HANDLER_GRP(PHY_OPS_GROUP, CT_KILL_NOTIFICATION, 294 iwl_mvm_ct_kill_notif, RX_HANDLER_SYNC), 295 296 RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif, 297 RX_HANDLER_ASYNC_LOCKED), 298 RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif, 299 RX_HANDLER_SYNC), 300 RX_HANDLER(TOF_NOTIFICATION, iwl_mvm_tof_resp_handler, 301 RX_HANDLER_ASYNC_LOCKED), 302 RX_HANDLER_GRP(DEBUG_GROUP, MFU_ASSERT_DUMP_NTF, 303 iwl_mvm_mfu_assert_dump_notif, RX_HANDLER_SYNC), 304 RX_HANDLER_GRP(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF, 305 iwl_mvm_rx_stored_beacon_notif, RX_HANDLER_SYNC), 306 RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF, 307 iwl_mvm_mu_mimo_grp_notif, RX_HANDLER_SYNC), 308 RX_HANDLER_GRP(DATA_PATH_GROUP, STA_PM_NOTIF, 309 iwl_mvm_sta_pm_notif, RX_HANDLER_SYNC), 310 }; 311 #undef RX_HANDLER 312 #undef RX_HANDLER_GRP 313 314 /* Please keep this array *SORTED* by hex value. 315 * Access is done through binary search 316 */ 317 static const struct iwl_hcmd_names iwl_mvm_legacy_names[] = { 318 HCMD_NAME(MVM_ALIVE), 319 HCMD_NAME(REPLY_ERROR), 320 HCMD_NAME(ECHO_CMD), 321 HCMD_NAME(INIT_COMPLETE_NOTIF), 322 HCMD_NAME(PHY_CONTEXT_CMD), 323 HCMD_NAME(DBG_CFG), 324 HCMD_NAME(SCAN_CFG_CMD), 325 HCMD_NAME(SCAN_REQ_UMAC), 326 HCMD_NAME(SCAN_ABORT_UMAC), 327 HCMD_NAME(SCAN_COMPLETE_UMAC), 328 HCMD_NAME(TOF_CMD), 329 HCMD_NAME(TOF_NOTIFICATION), 330 HCMD_NAME(BA_WINDOW_STATUS_NOTIFICATION_ID), 331 HCMD_NAME(ADD_STA_KEY), 332 HCMD_NAME(ADD_STA), 333 HCMD_NAME(REMOVE_STA), 334 HCMD_NAME(FW_GET_ITEM_CMD), 335 HCMD_NAME(TX_CMD), 336 HCMD_NAME(SCD_QUEUE_CFG), 337 HCMD_NAME(TXPATH_FLUSH), 338 HCMD_NAME(MGMT_MCAST_KEY), 339 HCMD_NAME(WEP_KEY), 340 HCMD_NAME(SHARED_MEM_CFG), 341 HCMD_NAME(TDLS_CHANNEL_SWITCH_CMD), 342 HCMD_NAME(MAC_CONTEXT_CMD), 343 HCMD_NAME(TIME_EVENT_CMD), 344 HCMD_NAME(TIME_EVENT_NOTIFICATION), 345 HCMD_NAME(BINDING_CONTEXT_CMD), 346 HCMD_NAME(TIME_QUOTA_CMD), 347 HCMD_NAME(NON_QOS_TX_COUNTER_CMD), 348 HCMD_NAME(LEDS_CMD), 349 HCMD_NAME(LQ_CMD), 350 HCMD_NAME(FW_PAGING_BLOCK_CMD), 351 HCMD_NAME(SCAN_OFFLOAD_REQUEST_CMD), 352 HCMD_NAME(SCAN_OFFLOAD_ABORT_CMD), 353 HCMD_NAME(HOT_SPOT_CMD), 354 HCMD_NAME(SCAN_OFFLOAD_PROFILES_QUERY_CMD), 355 HCMD_NAME(BT_COEX_UPDATE_REDUCED_TXP), 356 HCMD_NAME(BT_COEX_CI), 357 HCMD_NAME(PHY_CONFIGURATION_CMD), 358 HCMD_NAME(CALIB_RES_NOTIF_PHY_DB), 359 HCMD_NAME(PHY_DB_CMD), 360 HCMD_NAME(SCAN_OFFLOAD_COMPLETE), 361 HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_CMD), 362 HCMD_NAME(POWER_TABLE_CMD), 363 HCMD_NAME(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION), 364 HCMD_NAME(REPLY_THERMAL_MNG_BACKOFF), 365 HCMD_NAME(DC2DC_CONFIG_CMD), 366 HCMD_NAME(NVM_ACCESS_CMD), 367 HCMD_NAME(BEACON_NOTIFICATION), 368 HCMD_NAME(BEACON_TEMPLATE_CMD), 369 HCMD_NAME(TX_ANT_CONFIGURATION_CMD), 370 HCMD_NAME(BT_CONFIG), 371 HCMD_NAME(STATISTICS_CMD), 372 HCMD_NAME(STATISTICS_NOTIFICATION), 373 HCMD_NAME(EOSP_NOTIFICATION), 374 HCMD_NAME(REDUCE_TX_POWER_CMD), 375 HCMD_NAME(CARD_STATE_NOTIFICATION), 376 HCMD_NAME(MISSED_BEACONS_NOTIFICATION), 377 HCMD_NAME(TDLS_CONFIG_CMD), 378 HCMD_NAME(MAC_PM_POWER_TABLE), 379 HCMD_NAME(TDLS_CHANNEL_SWITCH_NOTIFICATION), 380 HCMD_NAME(MFUART_LOAD_NOTIFICATION), 381 HCMD_NAME(RSS_CONFIG_CMD), 382 HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC), 383 HCMD_NAME(REPLY_RX_PHY_CMD), 384 HCMD_NAME(REPLY_RX_MPDU_CMD), 385 HCMD_NAME(FRAME_RELEASE), 386 HCMD_NAME(BA_NOTIF), 387 HCMD_NAME(MCC_UPDATE_CMD), 388 HCMD_NAME(MCC_CHUB_UPDATE_CMD), 389 HCMD_NAME(MARKER_CMD), 390 HCMD_NAME(BT_PROFILE_NOTIFICATION), 391 HCMD_NAME(BCAST_FILTER_CMD), 392 HCMD_NAME(MCAST_FILTER_CMD), 393 HCMD_NAME(REPLY_SF_CFG_CMD), 394 HCMD_NAME(REPLY_BEACON_FILTERING_CMD), 395 HCMD_NAME(D3_CONFIG_CMD), 396 HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD), 397 HCMD_NAME(OFFLOADS_QUERY_CMD), 398 HCMD_NAME(REMOTE_WAKE_CONFIG_CMD), 399 HCMD_NAME(MATCH_FOUND_NOTIFICATION), 400 HCMD_NAME(DTS_MEASUREMENT_NOTIFICATION), 401 HCMD_NAME(WOWLAN_PATTERNS), 402 HCMD_NAME(WOWLAN_CONFIGURATION), 403 HCMD_NAME(WOWLAN_TSC_RSC_PARAM), 404 HCMD_NAME(WOWLAN_TKIP_PARAM), 405 HCMD_NAME(WOWLAN_KEK_KCK_MATERIAL), 406 HCMD_NAME(WOWLAN_GET_STATUSES), 407 HCMD_NAME(SCAN_ITERATION_COMPLETE), 408 HCMD_NAME(D0I3_END_CMD), 409 HCMD_NAME(LTR_CONFIG), 410 }; 411 412 /* Please keep this array *SORTED* by hex value. 413 * Access is done through binary search 414 */ 415 static const struct iwl_hcmd_names iwl_mvm_system_names[] = { 416 HCMD_NAME(SHARED_MEM_CFG_CMD), 417 HCMD_NAME(INIT_EXTENDED_CFG_CMD), 418 }; 419 420 /* Please keep this array *SORTED* by hex value. 421 * Access is done through binary search 422 */ 423 static const struct iwl_hcmd_names iwl_mvm_mac_conf_names[] = { 424 HCMD_NAME(CHANNEL_SWITCH_NOA_NOTIF), 425 }; 426 427 /* Please keep this array *SORTED* by hex value. 428 * Access is done through binary search 429 */ 430 static const struct iwl_hcmd_names iwl_mvm_phy_names[] = { 431 HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE), 432 HCMD_NAME(CTDP_CONFIG_CMD), 433 HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD), 434 HCMD_NAME(GEO_TX_POWER_LIMIT), 435 HCMD_NAME(CT_KILL_NOTIFICATION), 436 HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE), 437 }; 438 439 /* Please keep this array *SORTED* by hex value. 440 * Access is done through binary search 441 */ 442 static const struct iwl_hcmd_names iwl_mvm_data_path_names[] = { 443 HCMD_NAME(DQA_ENABLE_CMD), 444 HCMD_NAME(UPDATE_MU_GROUPS_CMD), 445 HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD), 446 HCMD_NAME(STA_PM_NOTIF), 447 HCMD_NAME(MU_GROUP_MGMT_NOTIF), 448 HCMD_NAME(RX_QUEUES_NOTIFICATION), 449 }; 450 451 /* Please keep this array *SORTED* by hex value. 452 * Access is done through binary search 453 */ 454 static const struct iwl_hcmd_names iwl_mvm_debug_names[] = { 455 HCMD_NAME(MFU_ASSERT_DUMP_NTF), 456 }; 457 458 /* Please keep this array *SORTED* by hex value. 459 * Access is done through binary search 460 */ 461 static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = { 462 HCMD_NAME(STORED_BEACON_NTF), 463 }; 464 465 /* Please keep this array *SORTED* by hex value. 466 * Access is done through binary search 467 */ 468 static const struct iwl_hcmd_names iwl_mvm_regulatory_and_nvm_names[] = { 469 HCMD_NAME(NVM_ACCESS_COMPLETE), 470 HCMD_NAME(NVM_GET_INFO), 471 }; 472 473 static const struct iwl_hcmd_arr iwl_mvm_groups[] = { 474 [LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names), 475 [LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names), 476 [SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names), 477 [MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names), 478 [PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names), 479 [DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names), 480 [PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names), 481 [REGULATORY_AND_NVM_GROUP] = 482 HCMD_ARR(iwl_mvm_regulatory_and_nvm_names), 483 }; 484 485 /* this forward declaration can avoid to export the function */ 486 static void iwl_mvm_async_handlers_wk(struct work_struct *wk); 487 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk); 488 489 static u32 iwl_mvm_min_backoff(struct iwl_mvm *mvm) 490 { 491 const struct iwl_pwr_tx_backoff *backoff = mvm->cfg->pwr_tx_backoffs; 492 u64 dflt_pwr_limit; 493 494 if (!backoff) 495 return 0; 496 497 dflt_pwr_limit = iwl_acpi_get_pwr_limit(mvm->dev); 498 499 while (backoff->pwr) { 500 if (dflt_pwr_limit >= backoff->pwr) 501 return backoff->backoff; 502 503 backoff++; 504 } 505 506 return 0; 507 } 508 509 static void iwl_mvm_tx_unblock_dwork(struct work_struct *work) 510 { 511 struct iwl_mvm *mvm = 512 container_of(work, struct iwl_mvm, cs_tx_unblock_dwork.work); 513 struct ieee80211_vif *tx_blocked_vif; 514 struct iwl_mvm_vif *mvmvif; 515 516 mutex_lock(&mvm->mutex); 517 518 tx_blocked_vif = 519 rcu_dereference_protected(mvm->csa_tx_blocked_vif, 520 lockdep_is_held(&mvm->mutex)); 521 522 if (!tx_blocked_vif) 523 goto unlock; 524 525 mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif); 526 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false); 527 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); 528 unlock: 529 mutex_unlock(&mvm->mutex); 530 } 531 532 static int iwl_mvm_fwrt_dump_start(void *ctx) 533 { 534 struct iwl_mvm *mvm = ctx; 535 int ret; 536 537 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT); 538 if (ret) 539 return ret; 540 541 mutex_lock(&mvm->mutex); 542 543 return 0; 544 } 545 546 static void iwl_mvm_fwrt_dump_end(void *ctx) 547 { 548 struct iwl_mvm *mvm = ctx; 549 550 mutex_unlock(&mvm->mutex); 551 552 iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT); 553 } 554 555 static const struct iwl_fw_runtime_ops iwl_mvm_fwrt_ops = { 556 .dump_start = iwl_mvm_fwrt_dump_start, 557 .dump_end = iwl_mvm_fwrt_dump_end, 558 }; 559 560 static struct iwl_op_mode * 561 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg, 562 const struct iwl_fw *fw, struct dentry *dbgfs_dir) 563 { 564 struct ieee80211_hw *hw; 565 struct iwl_op_mode *op_mode; 566 struct iwl_mvm *mvm; 567 struct iwl_trans_config trans_cfg = {}; 568 static const u8 no_reclaim_cmds[] = { 569 TX_CMD, 570 }; 571 int err, scan_size; 572 u32 min_backoff; 573 574 /* 575 * We use IWL_MVM_STATION_COUNT to check the validity of the station 576 * index all over the driver - check that its value corresponds to the 577 * array size. 578 */ 579 BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT); 580 581 /******************************** 582 * 1. Allocating and configuring HW data 583 ********************************/ 584 hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) + 585 sizeof(struct iwl_mvm), 586 &iwl_mvm_hw_ops); 587 if (!hw) 588 return NULL; 589 590 if (cfg->max_rx_agg_size) 591 hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size; 592 593 if (cfg->max_tx_agg_size) 594 hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size; 595 596 op_mode = hw->priv; 597 598 mvm = IWL_OP_MODE_GET_MVM(op_mode); 599 mvm->dev = trans->dev; 600 mvm->trans = trans; 601 mvm->cfg = cfg; 602 mvm->fw = fw; 603 mvm->hw = hw; 604 605 iwl_fw_runtime_init(&mvm->fwrt, trans, fw, &iwl_mvm_fwrt_ops, mvm, 606 dbgfs_dir); 607 608 mvm->init_status = 0; 609 610 if (iwl_mvm_has_new_rx_api(mvm)) { 611 op_mode->ops = &iwl_mvm_ops_mq; 612 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_desc); 613 } else { 614 op_mode->ops = &iwl_mvm_ops; 615 trans->rx_mpdu_cmd_hdr_size = 616 sizeof(struct iwl_rx_mpdu_res_start); 617 618 if (WARN_ON(trans->num_rx_queues > 1)) 619 goto out_free; 620 } 621 622 mvm->fw_restart = iwlwifi_mod_params.fw_restart ? -1 : 0; 623 624 mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE; 625 mvm->snif_queue = IWL_MVM_DQA_INJECT_MONITOR_QUEUE; 626 mvm->probe_queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE; 627 mvm->p2p_dev_queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE; 628 629 mvm->sf_state = SF_UNINIT; 630 if (iwl_mvm_has_unified_ucode(mvm)) 631 iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_REGULAR); 632 else 633 iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_INIT); 634 mvm->drop_bcn_ap_mode = true; 635 636 mutex_init(&mvm->mutex); 637 mutex_init(&mvm->d0i3_suspend_mutex); 638 spin_lock_init(&mvm->async_handlers_lock); 639 INIT_LIST_HEAD(&mvm->time_event_list); 640 INIT_LIST_HEAD(&mvm->aux_roc_te_list); 641 INIT_LIST_HEAD(&mvm->async_handlers_list); 642 spin_lock_init(&mvm->time_event_lock); 643 spin_lock_init(&mvm->queue_info_lock); 644 645 INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk); 646 INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk); 647 INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work); 648 INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work); 649 INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk); 650 INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk); 651 652 spin_lock_init(&mvm->d0i3_tx_lock); 653 spin_lock_init(&mvm->refs_lock); 654 skb_queue_head_init(&mvm->d0i3_tx); 655 init_waitqueue_head(&mvm->d0i3_exit_waitq); 656 init_waitqueue_head(&mvm->rx_sync_waitq); 657 658 atomic_set(&mvm->queue_sync_counter, 0); 659 660 SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev); 661 662 INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork); 663 664 /* 665 * Populate the state variables that the transport layer needs 666 * to know about. 667 */ 668 trans_cfg.op_mode = op_mode; 669 trans_cfg.no_reclaim_cmds = no_reclaim_cmds; 670 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds); 671 switch (iwlwifi_mod_params.amsdu_size) { 672 case IWL_AMSDU_DEF: 673 case IWL_AMSDU_4K: 674 trans_cfg.rx_buf_size = IWL_AMSDU_4K; 675 break; 676 case IWL_AMSDU_8K: 677 trans_cfg.rx_buf_size = IWL_AMSDU_8K; 678 break; 679 case IWL_AMSDU_12K: 680 trans_cfg.rx_buf_size = IWL_AMSDU_12K; 681 break; 682 default: 683 pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME, 684 iwlwifi_mod_params.amsdu_size); 685 trans_cfg.rx_buf_size = IWL_AMSDU_4K; 686 } 687 688 /* the hardware splits the A-MSDU */ 689 if (mvm->cfg->mq_rx_supported) 690 trans_cfg.rx_buf_size = IWL_AMSDU_4K; 691 692 trans->wide_cmd_header = true; 693 trans_cfg.bc_table_dword = true; 694 695 trans_cfg.command_groups = iwl_mvm_groups; 696 trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups); 697 698 trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE; 699 trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD; 700 trans_cfg.scd_set_active = true; 701 702 trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info, 703 driver_data[2]); 704 705 trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD; 706 707 /* Set a short watchdog for the command queue */ 708 trans_cfg.cmd_q_wdg_timeout = 709 iwl_mvm_get_wd_timeout(mvm, NULL, false, true); 710 711 snprintf(mvm->hw->wiphy->fw_version, 712 sizeof(mvm->hw->wiphy->fw_version), 713 "%s", fw->fw_version); 714 715 /* Configure transport layer */ 716 iwl_trans_configure(mvm->trans, &trans_cfg); 717 718 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD; 719 trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv; 720 trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num; 721 memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv, 722 sizeof(trans->dbg_conf_tlv)); 723 trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv; 724 725 /* set up notification wait support */ 726 iwl_notification_wait_init(&mvm->notif_wait); 727 728 /* Init phy db */ 729 mvm->phy_db = iwl_phy_db_init(trans); 730 if (!mvm->phy_db) { 731 IWL_ERR(mvm, "Cannot init phy_db\n"); 732 goto out_free; 733 } 734 735 IWL_INFO(mvm, "Detected %s, REV=0x%X\n", 736 mvm->cfg->name, mvm->trans->hw_rev); 737 738 if (iwlwifi_mod_params.nvm_file) 739 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file; 740 else 741 IWL_DEBUG_EEPROM(mvm->trans->dev, 742 "working without external nvm file\n"); 743 744 err = iwl_trans_start_hw(mvm->trans); 745 if (err) 746 goto out_free; 747 748 mutex_lock(&mvm->mutex); 749 iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE); 750 err = iwl_run_init_mvm_ucode(mvm, true); 751 if (!iwlmvm_mod_params.init_dbg || !err) 752 iwl_mvm_stop_device(mvm); 753 iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE); 754 mutex_unlock(&mvm->mutex); 755 if (err < 0) { 756 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err); 757 goto out_free; 758 } 759 760 scan_size = iwl_mvm_scan_size(mvm); 761 762 mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL); 763 if (!mvm->scan_cmd) 764 goto out_free; 765 766 /* Set EBS as successful as long as not stated otherwise by the FW. */ 767 mvm->last_ebs_successful = true; 768 769 err = iwl_mvm_mac_setup_register(mvm); 770 if (err) 771 goto out_free; 772 mvm->hw_registered = true; 773 774 min_backoff = iwl_mvm_min_backoff(mvm); 775 iwl_mvm_thermal_initialize(mvm, min_backoff); 776 777 err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir); 778 if (err) 779 goto out_unregister; 780 781 if (!iwl_mvm_has_new_rx_stats_api(mvm)) 782 memset(&mvm->rx_stats_v3, 0, 783 sizeof(struct mvm_statistics_rx_v3)); 784 else 785 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx)); 786 787 /* The transport always starts with a taken reference, we can 788 * release it now if d0i3 is supported */ 789 if (iwl_mvm_is_d0i3_supported(mvm)) 790 iwl_trans_unref(mvm->trans); 791 792 iwl_mvm_tof_init(mvm); 793 794 return op_mode; 795 796 out_unregister: 797 if (iwlmvm_mod_params.init_dbg) 798 return op_mode; 799 800 ieee80211_unregister_hw(mvm->hw); 801 mvm->hw_registered = false; 802 iwl_mvm_leds_exit(mvm); 803 iwl_mvm_thermal_exit(mvm); 804 out_free: 805 iwl_fw_runtime_exit(&mvm->fwrt); 806 iwl_fw_flush_dump(&mvm->fwrt); 807 808 if (iwlmvm_mod_params.init_dbg) 809 return op_mode; 810 iwl_phy_db_free(mvm->phy_db); 811 kfree(mvm->scan_cmd); 812 iwl_trans_op_mode_leave(trans); 813 814 ieee80211_free_hw(mvm->hw); 815 return NULL; 816 } 817 818 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode) 819 { 820 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 821 int i; 822 823 /* If d0i3 is supported, we have released the reference that 824 * the transport started with, so we should take it back now 825 * that we are leaving. 826 */ 827 if (iwl_mvm_is_d0i3_supported(mvm)) 828 iwl_trans_ref(mvm->trans); 829 830 iwl_mvm_leds_exit(mvm); 831 832 iwl_mvm_thermal_exit(mvm); 833 834 if (mvm->init_status & IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE) { 835 ieee80211_unregister_hw(mvm->hw); 836 mvm->init_status &= ~IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE; 837 } 838 839 kfree(mvm->scan_cmd); 840 kfree(mvm->mcast_filter_cmd); 841 mvm->mcast_filter_cmd = NULL; 842 843 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS) 844 kfree(mvm->d3_resume_sram); 845 #endif 846 iwl_fw_runtime_exit(&mvm->fwrt); 847 iwl_trans_op_mode_leave(mvm->trans); 848 849 iwl_phy_db_free(mvm->phy_db); 850 mvm->phy_db = NULL; 851 852 kfree(mvm->nvm_data); 853 for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++) 854 kfree(mvm->nvm_sections[i].data); 855 856 iwl_mvm_tof_clean(mvm); 857 858 mutex_destroy(&mvm->mutex); 859 mutex_destroy(&mvm->d0i3_suspend_mutex); 860 861 ieee80211_free_hw(mvm->hw); 862 } 863 864 struct iwl_async_handler_entry { 865 struct list_head list; 866 struct iwl_rx_cmd_buffer rxb; 867 enum iwl_rx_handler_context context; 868 void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb); 869 }; 870 871 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm) 872 { 873 struct iwl_async_handler_entry *entry, *tmp; 874 875 spin_lock_bh(&mvm->async_handlers_lock); 876 list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) { 877 iwl_free_rxb(&entry->rxb); 878 list_del(&entry->list); 879 kfree(entry); 880 } 881 spin_unlock_bh(&mvm->async_handlers_lock); 882 } 883 884 static void iwl_mvm_async_handlers_wk(struct work_struct *wk) 885 { 886 struct iwl_mvm *mvm = 887 container_of(wk, struct iwl_mvm, async_handlers_wk); 888 struct iwl_async_handler_entry *entry, *tmp; 889 LIST_HEAD(local_list); 890 891 /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */ 892 893 /* 894 * Sync with Rx path with a lock. Remove all the entries from this list, 895 * add them to a local one (lock free), and then handle them. 896 */ 897 spin_lock_bh(&mvm->async_handlers_lock); 898 list_splice_init(&mvm->async_handlers_list, &local_list); 899 spin_unlock_bh(&mvm->async_handlers_lock); 900 901 list_for_each_entry_safe(entry, tmp, &local_list, list) { 902 if (entry->context == RX_HANDLER_ASYNC_LOCKED) 903 mutex_lock(&mvm->mutex); 904 entry->fn(mvm, &entry->rxb); 905 iwl_free_rxb(&entry->rxb); 906 list_del(&entry->list); 907 if (entry->context == RX_HANDLER_ASYNC_LOCKED) 908 mutex_unlock(&mvm->mutex); 909 kfree(entry); 910 } 911 } 912 913 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm, 914 struct iwl_rx_packet *pkt) 915 { 916 struct iwl_fw_dbg_trigger_tlv *trig; 917 struct iwl_fw_dbg_trigger_cmd *cmds_trig; 918 int i; 919 920 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF)) 921 return; 922 923 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF); 924 cmds_trig = (void *)trig->data; 925 926 if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt, NULL, trig)) 927 return; 928 929 for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) { 930 /* don't collect on CMD 0 */ 931 if (!cmds_trig->cmds[i].cmd_id) 932 break; 933 934 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd || 935 cmds_trig->cmds[i].group_id != pkt->hdr.group_id) 936 continue; 937 938 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 939 "CMD 0x%02x.%02x received", 940 pkt->hdr.group_id, pkt->hdr.cmd); 941 break; 942 } 943 } 944 945 static void iwl_mvm_rx_common(struct iwl_mvm *mvm, 946 struct iwl_rx_cmd_buffer *rxb, 947 struct iwl_rx_packet *pkt) 948 { 949 int i; 950 951 iwl_mvm_rx_check_trigger(mvm, pkt); 952 953 /* 954 * Do the notification wait before RX handlers so 955 * even if the RX handler consumes the RXB we have 956 * access to it in the notification wait entry. 957 */ 958 iwl_notification_wait_notify(&mvm->notif_wait, pkt); 959 960 for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) { 961 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i]; 962 struct iwl_async_handler_entry *entry; 963 964 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) 965 continue; 966 967 if (rx_h->context == RX_HANDLER_SYNC) { 968 rx_h->fn(mvm, rxb); 969 return; 970 } 971 972 entry = kzalloc(sizeof(*entry), GFP_ATOMIC); 973 /* we can't do much... */ 974 if (!entry) 975 return; 976 977 entry->rxb._page = rxb_steal_page(rxb); 978 entry->rxb._offset = rxb->_offset; 979 entry->rxb._rx_page_order = rxb->_rx_page_order; 980 entry->fn = rx_h->fn; 981 entry->context = rx_h->context; 982 spin_lock(&mvm->async_handlers_lock); 983 list_add_tail(&entry->list, &mvm->async_handlers_list); 984 spin_unlock(&mvm->async_handlers_lock); 985 schedule_work(&mvm->async_handlers_wk); 986 return; 987 } 988 989 iwl_fwrt_handle_notification(&mvm->fwrt, rxb); 990 } 991 992 static void iwl_mvm_rx(struct iwl_op_mode *op_mode, 993 struct napi_struct *napi, 994 struct iwl_rx_cmd_buffer *rxb) 995 { 996 struct iwl_rx_packet *pkt = rxb_addr(rxb); 997 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 998 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); 999 1000 if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))) 1001 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb); 1002 else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD)) 1003 iwl_mvm_rx_rx_phy_cmd(mvm, rxb); 1004 else 1005 iwl_mvm_rx_common(mvm, rxb, pkt); 1006 } 1007 1008 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode, 1009 struct napi_struct *napi, 1010 struct iwl_rx_cmd_buffer *rxb) 1011 { 1012 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1013 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1014 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); 1015 1016 if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))) 1017 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0); 1018 else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP, 1019 RX_QUEUES_NOTIFICATION))) 1020 iwl_mvm_rx_queue_notif(mvm, rxb, 0); 1021 else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)) 1022 iwl_mvm_rx_frame_release(mvm, napi, rxb, 0); 1023 else if (cmd == WIDE_ID(DATA_PATH_GROUP, TLC_MNG_UPDATE_NOTIF)) 1024 iwl_mvm_tlc_update_notif(mvm, pkt); 1025 else 1026 iwl_mvm_rx_common(mvm, rxb, pkt); 1027 } 1028 1029 void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq) 1030 { 1031 int q; 1032 1033 if (WARN_ON_ONCE(!mq)) 1034 return; 1035 1036 for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) { 1037 if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) { 1038 IWL_DEBUG_TX_QUEUES(mvm, 1039 "mac80211 %d already stopped\n", q); 1040 continue; 1041 } 1042 1043 ieee80211_stop_queue(mvm->hw, q); 1044 } 1045 } 1046 1047 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode, 1048 const struct iwl_device_cmd *cmd) 1049 { 1050 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1051 1052 /* 1053 * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA 1054 * commands that need to block the Tx queues. 1055 */ 1056 iwl_trans_block_txq_ptrs(mvm->trans, false); 1057 } 1058 1059 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue) 1060 { 1061 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1062 unsigned long mq; 1063 1064 spin_lock_bh(&mvm->queue_info_lock); 1065 mq = mvm->hw_queue_to_mac80211[hw_queue]; 1066 spin_unlock_bh(&mvm->queue_info_lock); 1067 1068 iwl_mvm_stop_mac_queues(mvm, mq); 1069 } 1070 1071 void iwl_mvm_start_mac_queues(struct iwl_mvm *mvm, unsigned long mq) 1072 { 1073 int q; 1074 1075 if (WARN_ON_ONCE(!mq)) 1076 return; 1077 1078 for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) { 1079 if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) { 1080 IWL_DEBUG_TX_QUEUES(mvm, 1081 "mac80211 %d still stopped\n", q); 1082 continue; 1083 } 1084 1085 ieee80211_wake_queue(mvm->hw, q); 1086 } 1087 } 1088 1089 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue) 1090 { 1091 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1092 unsigned long mq; 1093 1094 spin_lock_bh(&mvm->queue_info_lock); 1095 mq = mvm->hw_queue_to_mac80211[hw_queue]; 1096 spin_unlock_bh(&mvm->queue_info_lock); 1097 1098 iwl_mvm_start_mac_queues(mvm, mq); 1099 } 1100 1101 static void iwl_mvm_set_rfkill_state(struct iwl_mvm *mvm) 1102 { 1103 bool state = iwl_mvm_is_radio_killed(mvm); 1104 1105 if (state) 1106 wake_up(&mvm->rx_sync_waitq); 1107 1108 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, state); 1109 } 1110 1111 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state) 1112 { 1113 if (state) 1114 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); 1115 else 1116 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); 1117 1118 iwl_mvm_set_rfkill_state(mvm); 1119 } 1120 1121 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state) 1122 { 1123 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1124 bool calibrating = READ_ONCE(mvm->calibrating); 1125 1126 if (state) 1127 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); 1128 else 1129 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); 1130 1131 iwl_mvm_set_rfkill_state(mvm); 1132 1133 /* iwl_run_init_mvm_ucode is waiting for results, abort it */ 1134 if (calibrating) 1135 iwl_abort_notification_waits(&mvm->notif_wait); 1136 1137 /* 1138 * Stop the device if we run OPERATIONAL firmware or if we are in the 1139 * middle of the calibrations. 1140 */ 1141 return state && (mvm->fwrt.cur_fw_img != IWL_UCODE_INIT || calibrating); 1142 } 1143 1144 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb) 1145 { 1146 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1147 struct ieee80211_tx_info *info; 1148 1149 info = IEEE80211_SKB_CB(skb); 1150 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]); 1151 ieee80211_free_txskb(mvm->hw, skb); 1152 } 1153 1154 struct iwl_mvm_reprobe { 1155 struct device *dev; 1156 struct work_struct work; 1157 }; 1158 1159 static void iwl_mvm_reprobe_wk(struct work_struct *wk) 1160 { 1161 struct iwl_mvm_reprobe *reprobe; 1162 1163 reprobe = container_of(wk, struct iwl_mvm_reprobe, work); 1164 if (device_reprobe(reprobe->dev)) 1165 dev_err(reprobe->dev, "reprobe failed!\n"); 1166 kfree(reprobe); 1167 module_put(THIS_MODULE); 1168 } 1169 1170 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error) 1171 { 1172 iwl_abort_notification_waits(&mvm->notif_wait); 1173 1174 /* 1175 * This is a bit racy, but worst case we tell mac80211 about 1176 * a stopped/aborted scan when that was already done which 1177 * is not a problem. It is necessary to abort any os scan 1178 * here because mac80211 requires having the scan cleared 1179 * before restarting. 1180 * We'll reset the scan_status to NONE in restart cleanup in 1181 * the next start() call from mac80211. If restart isn't called 1182 * (no fw restart) scan status will stay busy. 1183 */ 1184 iwl_mvm_report_scan_aborted(mvm); 1185 1186 /* 1187 * If we're restarting already, don't cycle restarts. 1188 * If INIT fw asserted, it will likely fail again. 1189 * If WoWLAN fw asserted, don't restart either, mac80211 1190 * can't recover this since we're already half suspended. 1191 */ 1192 if (!mvm->fw_restart && fw_error) { 1193 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert, 1194 NULL); 1195 } else if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1196 struct iwl_mvm_reprobe *reprobe; 1197 1198 IWL_ERR(mvm, 1199 "Firmware error during reconfiguration - reprobe!\n"); 1200 1201 /* 1202 * get a module reference to avoid doing this while unloading 1203 * anyway and to avoid scheduling a work with code that's 1204 * being removed. 1205 */ 1206 if (!try_module_get(THIS_MODULE)) { 1207 IWL_ERR(mvm, "Module is being unloaded - abort\n"); 1208 return; 1209 } 1210 1211 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC); 1212 if (!reprobe) { 1213 module_put(THIS_MODULE); 1214 return; 1215 } 1216 reprobe->dev = mvm->trans->dev; 1217 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk); 1218 schedule_work(&reprobe->work); 1219 } else if (mvm->fwrt.cur_fw_img == IWL_UCODE_REGULAR && 1220 mvm->hw_registered) { 1221 /* don't let the transport/FW power down */ 1222 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); 1223 1224 if (fw_error && mvm->fw_restart > 0) 1225 mvm->fw_restart--; 1226 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); 1227 ieee80211_restart_hw(mvm->hw); 1228 } 1229 } 1230 1231 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode) 1232 { 1233 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1234 1235 iwl_mvm_dump_nic_error_log(mvm); 1236 1237 iwl_mvm_nic_restart(mvm, true); 1238 } 1239 1240 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode) 1241 { 1242 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1243 1244 WARN_ON(1); 1245 iwl_mvm_nic_restart(mvm, true); 1246 } 1247 1248 struct iwl_d0i3_iter_data { 1249 struct iwl_mvm *mvm; 1250 struct ieee80211_vif *connected_vif; 1251 u8 ap_sta_id; 1252 u8 vif_count; 1253 u8 offloading_tid; 1254 bool disable_offloading; 1255 }; 1256 1257 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm, 1258 struct ieee80211_vif *vif, 1259 struct iwl_d0i3_iter_data *iter_data) 1260 { 1261 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1262 struct iwl_mvm_sta *mvmsta; 1263 u32 available_tids = 0; 1264 u8 tid; 1265 1266 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION || 1267 mvmvif->ap_sta_id == IWL_MVM_INVALID_STA)) 1268 return false; 1269 1270 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); 1271 if (!mvmsta) 1272 return false; 1273 1274 spin_lock_bh(&mvmsta->lock); 1275 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1276 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 1277 1278 /* 1279 * in case of pending tx packets, don't use this tid 1280 * for offloading in order to prevent reuse of the same 1281 * qos seq counters. 1282 */ 1283 if (iwl_mvm_tid_queued(mvm, tid_data)) 1284 continue; 1285 1286 if (tid_data->state != IWL_AGG_OFF) 1287 continue; 1288 1289 available_tids |= BIT(tid); 1290 } 1291 spin_unlock_bh(&mvmsta->lock); 1292 1293 /* 1294 * disallow protocol offloading if we have no available tid 1295 * (with no pending frames and no active aggregation, 1296 * as we don't handle "holes" properly - the scheduler needs the 1297 * frame's seq number and TFD index to match) 1298 */ 1299 if (!available_tids) 1300 return true; 1301 1302 /* for simplicity, just use the first available tid */ 1303 iter_data->offloading_tid = ffs(available_tids) - 1; 1304 return false; 1305 } 1306 1307 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac, 1308 struct ieee80211_vif *vif) 1309 { 1310 struct iwl_d0i3_iter_data *data = _data; 1311 struct iwl_mvm *mvm = data->mvm; 1312 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1313 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; 1314 1315 IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr); 1316 if (vif->type != NL80211_IFTYPE_STATION || 1317 !vif->bss_conf.assoc) 1318 return; 1319 1320 /* 1321 * in case of pending tx packets or active aggregations, 1322 * avoid offloading features in order to prevent reuse of 1323 * the same qos seq counters. 1324 */ 1325 if (iwl_mvm_disallow_offloading(mvm, vif, data)) 1326 data->disable_offloading = true; 1327 1328 iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags); 1329 iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading, 1330 false, flags); 1331 1332 /* 1333 * on init/association, mvm already configures POWER_TABLE_CMD 1334 * and REPLY_MCAST_FILTER_CMD, so currently don't 1335 * reconfigure them (we might want to use different 1336 * params later on, though). 1337 */ 1338 data->ap_sta_id = mvmvif->ap_sta_id; 1339 data->vif_count++; 1340 1341 /* 1342 * no new commands can be sent at this stage, so it's safe 1343 * to save the vif pointer during d0i3 entrance. 1344 */ 1345 data->connected_vif = vif; 1346 } 1347 1348 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm, 1349 struct iwl_wowlan_config_cmd *cmd, 1350 struct iwl_d0i3_iter_data *iter_data) 1351 { 1352 struct ieee80211_sta *ap_sta; 1353 struct iwl_mvm_sta *mvm_ap_sta; 1354 1355 if (iter_data->ap_sta_id == IWL_MVM_INVALID_STA) 1356 return; 1357 1358 rcu_read_lock(); 1359 1360 ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]); 1361 if (IS_ERR_OR_NULL(ap_sta)) 1362 goto out; 1363 1364 mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta); 1365 cmd->is_11n_connection = ap_sta->ht_cap.ht_supported; 1366 cmd->offloading_tid = iter_data->offloading_tid; 1367 cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING | 1368 ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON; 1369 /* 1370 * The d0i3 uCode takes care of the nonqos counters, 1371 * so configure only the qos seq ones. 1372 */ 1373 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd); 1374 out: 1375 rcu_read_unlock(); 1376 } 1377 1378 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode) 1379 { 1380 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1381 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; 1382 int ret; 1383 struct iwl_d0i3_iter_data d0i3_iter_data = { 1384 .mvm = mvm, 1385 }; 1386 struct iwl_wowlan_config_cmd wowlan_config_cmd = { 1387 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME | 1388 IWL_WOWLAN_WAKEUP_BEACON_MISS | 1389 IWL_WOWLAN_WAKEUP_LINK_CHANGE), 1390 }; 1391 struct iwl_d3_manager_config d3_cfg_cmd = { 1392 .min_sleep_time = cpu_to_le32(1000), 1393 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR), 1394 }; 1395 1396 IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n"); 1397 1398 if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR)) 1399 return -EINVAL; 1400 1401 set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1402 1403 /* 1404 * iwl_mvm_ref_sync takes a reference before checking the flag. 1405 * so by checking there is no held reference we prevent a state 1406 * in which iwl_mvm_ref_sync continues successfully while we 1407 * configure the firmware to enter d0i3 1408 */ 1409 if (iwl_mvm_ref_taken(mvm)) { 1410 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n"); 1411 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1412 wake_up(&mvm->d0i3_exit_waitq); 1413 return 1; 1414 } 1415 1416 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1417 IEEE80211_IFACE_ITER_NORMAL, 1418 iwl_mvm_enter_d0i3_iterator, 1419 &d0i3_iter_data); 1420 if (d0i3_iter_data.vif_count == 1) { 1421 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id; 1422 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading; 1423 } else { 1424 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1); 1425 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA; 1426 mvm->d0i3_offloading = false; 1427 } 1428 1429 /* make sure we have no running tx while configuring the seqno */ 1430 synchronize_net(); 1431 1432 /* Flush the hw queues, in case something got queued during entry */ 1433 /* TODO new tx api */ 1434 if (iwl_mvm_has_new_tx_api(mvm)) { 1435 WARN_ONCE(1, "d0i3: Need to implement flush TX queue\n"); 1436 } else { 1437 ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm), 1438 flags); 1439 if (ret) 1440 return ret; 1441 } 1442 1443 /* configure wowlan configuration only if needed */ 1444 if (mvm->d0i3_ap_sta_id != IWL_MVM_INVALID_STA) { 1445 /* wake on beacons only if beacon storing isn't supported */ 1446 if (!fw_has_capa(&mvm->fw->ucode_capa, 1447 IWL_UCODE_TLV_CAPA_BEACON_STORING)) 1448 wowlan_config_cmd.wakeup_filter |= 1449 cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING); 1450 1451 iwl_mvm_wowlan_config_key_params(mvm, 1452 d0i3_iter_data.connected_vif, 1453 true, flags); 1454 1455 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd, 1456 &d0i3_iter_data); 1457 1458 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags, 1459 sizeof(wowlan_config_cmd), 1460 &wowlan_config_cmd); 1461 if (ret) 1462 return ret; 1463 } 1464 1465 return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD, 1466 flags | CMD_MAKE_TRANS_IDLE, 1467 sizeof(d3_cfg_cmd), &d3_cfg_cmd); 1468 } 1469 1470 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac, 1471 struct ieee80211_vif *vif) 1472 { 1473 struct iwl_mvm *mvm = _data; 1474 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO; 1475 1476 IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr); 1477 if (vif->type != NL80211_IFTYPE_STATION || 1478 !vif->bss_conf.assoc) 1479 return; 1480 1481 iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags); 1482 } 1483 1484 struct iwl_mvm_d0i3_exit_work_iter_data { 1485 struct iwl_mvm *mvm; 1486 struct iwl_wowlan_status *status; 1487 u32 wakeup_reasons; 1488 }; 1489 1490 static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac, 1491 struct ieee80211_vif *vif) 1492 { 1493 struct iwl_mvm_d0i3_exit_work_iter_data *data = _data; 1494 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1495 u32 reasons = data->wakeup_reasons; 1496 1497 /* consider only the relevant station interface */ 1498 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc || 1499 data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id) 1500 return; 1501 1502 if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH) 1503 iwl_mvm_connection_loss(data->mvm, vif, "D0i3"); 1504 else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON) 1505 ieee80211_beacon_loss(vif); 1506 else 1507 iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status); 1508 } 1509 1510 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq) 1511 { 1512 struct ieee80211_sta *sta = NULL; 1513 struct iwl_mvm_sta *mvm_ap_sta; 1514 int i; 1515 bool wake_queues = false; 1516 1517 lockdep_assert_held(&mvm->mutex); 1518 1519 spin_lock_bh(&mvm->d0i3_tx_lock); 1520 1521 if (mvm->d0i3_ap_sta_id == IWL_MVM_INVALID_STA) 1522 goto out; 1523 1524 IWL_DEBUG_RPM(mvm, "re-enqueue packets\n"); 1525 1526 /* get the sta in order to update seq numbers and re-enqueue skbs */ 1527 sta = rcu_dereference_protected( 1528 mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id], 1529 lockdep_is_held(&mvm->mutex)); 1530 1531 if (IS_ERR_OR_NULL(sta)) { 1532 sta = NULL; 1533 goto out; 1534 } 1535 1536 if (mvm->d0i3_offloading && qos_seq) { 1537 /* update qos seq numbers if offloading was enabled */ 1538 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta); 1539 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1540 u16 seq = le16_to_cpu(qos_seq[i]); 1541 /* firmware stores last-used one, we store next one */ 1542 seq += 0x10; 1543 mvm_ap_sta->tid_data[i].seq_number = seq; 1544 } 1545 } 1546 out: 1547 /* re-enqueue (or drop) all packets */ 1548 while (!skb_queue_empty(&mvm->d0i3_tx)) { 1549 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx); 1550 1551 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta)) 1552 ieee80211_free_txskb(mvm->hw, skb); 1553 1554 /* if the skb_queue is not empty, we need to wake queues */ 1555 wake_queues = true; 1556 } 1557 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1558 wake_up(&mvm->d0i3_exit_waitq); 1559 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA; 1560 if (wake_queues) 1561 ieee80211_wake_queues(mvm->hw); 1562 1563 spin_unlock_bh(&mvm->d0i3_tx_lock); 1564 } 1565 1566 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk) 1567 { 1568 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work); 1569 struct iwl_host_cmd get_status_cmd = { 1570 .id = WOWLAN_GET_STATUSES, 1571 .flags = CMD_HIGH_PRIO | CMD_WANT_SKB, 1572 }; 1573 struct iwl_mvm_d0i3_exit_work_iter_data iter_data = { 1574 .mvm = mvm, 1575 }; 1576 1577 struct iwl_wowlan_status *status; 1578 int ret; 1579 u32 wakeup_reasons = 0; 1580 __le16 *qos_seq = NULL; 1581 1582 mutex_lock(&mvm->mutex); 1583 ret = iwl_mvm_send_cmd(mvm, &get_status_cmd); 1584 if (ret) 1585 goto out; 1586 1587 status = (void *)get_status_cmd.resp_pkt->data; 1588 wakeup_reasons = le32_to_cpu(status->wakeup_reasons); 1589 qos_seq = status->qos_seq_ctr; 1590 1591 IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons); 1592 1593 iter_data.wakeup_reasons = wakeup_reasons; 1594 iter_data.status = status; 1595 ieee80211_iterate_active_interfaces(mvm->hw, 1596 IEEE80211_IFACE_ITER_NORMAL, 1597 iwl_mvm_d0i3_exit_work_iter, 1598 &iter_data); 1599 out: 1600 iwl_mvm_d0i3_enable_tx(mvm, qos_seq); 1601 1602 IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n", 1603 wakeup_reasons); 1604 1605 /* qos_seq might point inside resp_pkt, so free it only now */ 1606 if (get_status_cmd.resp_pkt) 1607 iwl_free_resp(&get_status_cmd); 1608 1609 /* the FW might have updated the regdomain */ 1610 iwl_mvm_update_changed_regdom(mvm); 1611 1612 iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK); 1613 mutex_unlock(&mvm->mutex); 1614 } 1615 1616 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm) 1617 { 1618 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE | 1619 CMD_WAKE_UP_TRANS; 1620 int ret; 1621 1622 IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n"); 1623 1624 if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR)) 1625 return -EINVAL; 1626 1627 mutex_lock(&mvm->d0i3_suspend_mutex); 1628 if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) { 1629 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n"); 1630 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags); 1631 mutex_unlock(&mvm->d0i3_suspend_mutex); 1632 return 0; 1633 } 1634 mutex_unlock(&mvm->d0i3_suspend_mutex); 1635 1636 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL); 1637 if (ret) 1638 goto out; 1639 1640 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1641 IEEE80211_IFACE_ITER_NORMAL, 1642 iwl_mvm_exit_d0i3_iterator, 1643 mvm); 1644 out: 1645 schedule_work(&mvm->d0i3_exit_work); 1646 return ret; 1647 } 1648 1649 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode) 1650 { 1651 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1652 1653 iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK); 1654 return _iwl_mvm_exit_d0i3(mvm); 1655 } 1656 1657 #define IWL_MVM_COMMON_OPS \ 1658 /* these could be differentiated */ \ 1659 .async_cb = iwl_mvm_async_cb, \ 1660 .queue_full = iwl_mvm_stop_sw_queue, \ 1661 .queue_not_full = iwl_mvm_wake_sw_queue, \ 1662 .hw_rf_kill = iwl_mvm_set_hw_rfkill_state, \ 1663 .free_skb = iwl_mvm_free_skb, \ 1664 .nic_error = iwl_mvm_nic_error, \ 1665 .cmd_queue_full = iwl_mvm_cmd_queue_full, \ 1666 .nic_config = iwl_mvm_nic_config, \ 1667 .enter_d0i3 = iwl_mvm_enter_d0i3, \ 1668 .exit_d0i3 = iwl_mvm_exit_d0i3, \ 1669 /* as we only register one, these MUST be common! */ \ 1670 .start = iwl_op_mode_mvm_start, \ 1671 .stop = iwl_op_mode_mvm_stop 1672 1673 static const struct iwl_op_mode_ops iwl_mvm_ops = { 1674 IWL_MVM_COMMON_OPS, 1675 .rx = iwl_mvm_rx, 1676 }; 1677 1678 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode, 1679 struct napi_struct *napi, 1680 struct iwl_rx_cmd_buffer *rxb, 1681 unsigned int queue) 1682 { 1683 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1684 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1685 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); 1686 1687 if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))) 1688 iwl_mvm_rx_frame_release(mvm, napi, rxb, queue); 1689 else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP, 1690 RX_QUEUES_NOTIFICATION))) 1691 iwl_mvm_rx_queue_notif(mvm, rxb, queue); 1692 else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))) 1693 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue); 1694 } 1695 1696 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = { 1697 IWL_MVM_COMMON_OPS, 1698 .rx = iwl_mvm_rx_mq, 1699 .rx_rss = iwl_mvm_rx_mq_rss, 1700 }; 1701