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