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 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of version 2 of the GNU General Public License as 13 * published by the Free Software Foundation. 14 * 15 * This program is distributed in the hope that it will be useful, but 16 * WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 18 * General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, 23 * USA 24 * 25 * The full GNU General Public License is included in this distribution 26 * in the file called COPYING. 27 * 28 * Contact Information: 29 * Intel Linux Wireless <linuxwifi@intel.com> 30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 31 * 32 * BSD LICENSE 33 * 34 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 35 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 36 * Copyright(c) 2016 Intel Deutschland GmbH 37 * All rights reserved. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 43 * * Redistributions of source code must retain the above copyright 44 * notice, this list of conditions and the following disclaimer. 45 * * Redistributions in binary form must reproduce the above copyright 46 * notice, this list of conditions and the following disclaimer in 47 * the documentation and/or other materials provided with the 48 * distribution. 49 * * Neither the name Intel Corporation nor the names of its 50 * contributors may be used to endorse or promote products derived 51 * from this software without specific prior written permission. 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 54 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 55 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 56 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 57 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 58 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 59 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 60 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 61 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 62 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 63 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 64 * 65 *****************************************************************************/ 66 #include <linux/module.h> 67 #include <linux/vmalloc.h> 68 #include <net/mac80211.h> 69 70 #include "iwl-notif-wait.h" 71 #include "iwl-trans.h" 72 #include "iwl-op-mode.h" 73 #include "iwl-fw.h" 74 #include "iwl-debug.h" 75 #include "iwl-drv.h" 76 #include "iwl-modparams.h" 77 #include "mvm.h" 78 #include "iwl-phy-db.h" 79 #include "iwl-eeprom-parse.h" 80 #include "iwl-csr.h" 81 #include "iwl-io.h" 82 #include "iwl-prph.h" 83 #include "rs.h" 84 #include "fw-api-scan.h" 85 #include "time-event.h" 86 #include "fw-dbg.h" 87 #include "fw-api.h" 88 #include "fw-api-scan.h" 89 90 #define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux" 91 MODULE_DESCRIPTION(DRV_DESCRIPTION); 92 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR); 93 MODULE_LICENSE("GPL"); 94 95 static const struct iwl_op_mode_ops iwl_mvm_ops; 96 static const struct iwl_op_mode_ops iwl_mvm_ops_mq; 97 98 struct iwl_mvm_mod_params iwlmvm_mod_params = { 99 .power_scheme = IWL_POWER_SCHEME_BPS, 100 .tfd_q_hang_detect = true 101 /* rest of fields are 0 by default */ 102 }; 103 104 module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, S_IRUGO); 105 MODULE_PARM_DESC(init_dbg, 106 "set to true to debug an ASSERT in INIT fw (default: false"); 107 module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, S_IRUGO); 108 MODULE_PARM_DESC(power_scheme, 109 "power management scheme: 1-active, 2-balanced, 3-low power, default: 2"); 110 module_param_named(tfd_q_hang_detect, iwlmvm_mod_params.tfd_q_hang_detect, 111 bool, S_IRUGO); 112 MODULE_PARM_DESC(tfd_q_hang_detect, 113 "TFD queues hang detection (default: true"); 114 115 /* 116 * module init and exit functions 117 */ 118 static int __init iwl_mvm_init(void) 119 { 120 int ret; 121 122 ret = iwl_mvm_rate_control_register(); 123 if (ret) { 124 pr_err("Unable to register rate control algorithm: %d\n", ret); 125 return ret; 126 } 127 128 ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops); 129 130 if (ret) { 131 pr_err("Unable to register MVM op_mode: %d\n", ret); 132 iwl_mvm_rate_control_unregister(); 133 } 134 135 return ret; 136 } 137 module_init(iwl_mvm_init); 138 139 static void __exit iwl_mvm_exit(void) 140 { 141 iwl_opmode_deregister("iwlmvm"); 142 iwl_mvm_rate_control_unregister(); 143 } 144 module_exit(iwl_mvm_exit); 145 146 static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode) 147 { 148 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 149 u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash; 150 u32 reg_val = 0; 151 u32 phy_config = iwl_mvm_get_phy_config(mvm); 152 153 radio_cfg_type = (phy_config & FW_PHY_CFG_RADIO_TYPE) >> 154 FW_PHY_CFG_RADIO_TYPE_POS; 155 radio_cfg_step = (phy_config & FW_PHY_CFG_RADIO_STEP) >> 156 FW_PHY_CFG_RADIO_STEP_POS; 157 radio_cfg_dash = (phy_config & FW_PHY_CFG_RADIO_DASH) >> 158 FW_PHY_CFG_RADIO_DASH_POS; 159 160 /* SKU control */ 161 reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) << 162 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP; 163 reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) << 164 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH; 165 166 /* radio configuration */ 167 reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE; 168 reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP; 169 reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH; 170 171 WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) & 172 ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE); 173 174 /* 175 * TODO: Bits 7-8 of CSR in 8000 HW family set the ADC sampling, and 176 * shouldn't be set to any non-zero value. The same is supposed to be 177 * true of the other HW, but unsetting them (such as the 7260) causes 178 * automatic tests to fail on seemingly unrelated errors. Need to 179 * further investigate this, but for now we'll separate cases. 180 */ 181 if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000) 182 reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI; 183 184 iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG, 185 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH | 186 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP | 187 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE | 188 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP | 189 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH | 190 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI | 191 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI, 192 reg_val); 193 194 IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type, 195 radio_cfg_step, radio_cfg_dash); 196 197 /* 198 * W/A : NIC is stuck in a reset state after Early PCIe power off 199 * (PCIe power is lost before PERST# is asserted), causing ME FW 200 * to lose ownership and not being able to obtain it back. 201 */ 202 if (!mvm->trans->cfg->apmg_not_supported) 203 iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG, 204 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS, 205 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS); 206 } 207 208 /** 209 * enum iwl_rx_handler_context context for Rx handler 210 * @RX_HANDLER_SYNC : this means that it will be called in the Rx path 211 * which can't acquire mvm->mutex. 212 * @RX_HANDLER_ASYNC_LOCKED : If the handler needs to hold mvm->mutex 213 * (and only in this case!), it should be set as ASYNC. In that case, 214 * it will be called from a worker with mvm->mutex held. 215 * @RX_HANDLER_ASYNC_UNLOCKED : in case the handler needs to lock the 216 * mutex itself, it will be called from a worker without mvm->mutex held. 217 */ 218 enum iwl_rx_handler_context { 219 RX_HANDLER_SYNC, 220 RX_HANDLER_ASYNC_LOCKED, 221 RX_HANDLER_ASYNC_UNLOCKED, 222 }; 223 224 /** 225 * struct iwl_rx_handlers handler for FW notification 226 * @cmd_id: command id 227 * @context: see &iwl_rx_handler_context 228 * @fn: the function is called when notification is received 229 */ 230 struct iwl_rx_handlers { 231 u16 cmd_id; 232 enum iwl_rx_handler_context context; 233 void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb); 234 }; 235 236 #define RX_HANDLER(_cmd_id, _fn, _context) \ 237 { .cmd_id = _cmd_id, .fn = _fn, .context = _context } 238 #define RX_HANDLER_GRP(_grp, _cmd, _fn, _context) \ 239 { .cmd_id = WIDE_ID(_grp, _cmd), .fn = _fn, .context = _context } 240 241 /* 242 * Handlers for fw notifications 243 * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME 244 * This list should be in order of frequency for performance purposes. 245 * 246 * The handler can be one from three contexts, see &iwl_rx_handler_context 247 */ 248 static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = { 249 RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, RX_HANDLER_SYNC), 250 RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, RX_HANDLER_SYNC), 251 252 RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif, 253 RX_HANDLER_ASYNC_LOCKED), 254 RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif, 255 RX_HANDLER_ASYNC_LOCKED), 256 RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics, 257 RX_HANDLER_ASYNC_LOCKED), 258 RX_HANDLER(ANTENNA_COUPLING_NOTIFICATION, 259 iwl_mvm_rx_ant_coupling_notif, 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(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF, 306 iwl_mvm_rx_stored_beacon_notif, RX_HANDLER_SYNC), 307 RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF, 308 iwl_mvm_mu_mimo_grp_notif, RX_HANDLER_SYNC), 309 RX_HANDLER_GRP(DATA_PATH_GROUP, STA_PM_NOTIF, 310 iwl_mvm_sta_pm_notif, RX_HANDLER_SYNC), 311 }; 312 #undef RX_HANDLER 313 #undef RX_HANDLER_GRP 314 315 /* Please keep this array *SORTED* by hex value. 316 * Access is done through binary search 317 */ 318 static const struct iwl_hcmd_names iwl_mvm_legacy_names[] = { 319 HCMD_NAME(MVM_ALIVE), 320 HCMD_NAME(REPLY_ERROR), 321 HCMD_NAME(ECHO_CMD), 322 HCMD_NAME(INIT_COMPLETE_NOTIF), 323 HCMD_NAME(PHY_CONTEXT_CMD), 324 HCMD_NAME(DBG_CFG), 325 HCMD_NAME(ANTENNA_COUPLING_NOTIFICATION), 326 HCMD_NAME(SCAN_CFG_CMD), 327 HCMD_NAME(SCAN_REQ_UMAC), 328 HCMD_NAME(SCAN_ABORT_UMAC), 329 HCMD_NAME(SCAN_COMPLETE_UMAC), 330 HCMD_NAME(TOF_CMD), 331 HCMD_NAME(TOF_NOTIFICATION), 332 HCMD_NAME(BA_WINDOW_STATUS_NOTIFICATION_ID), 333 HCMD_NAME(ADD_STA_KEY), 334 HCMD_NAME(ADD_STA), 335 HCMD_NAME(REMOVE_STA), 336 HCMD_NAME(FW_GET_ITEM_CMD), 337 HCMD_NAME(TX_CMD), 338 HCMD_NAME(SCD_QUEUE_CFG), 339 HCMD_NAME(TXPATH_FLUSH), 340 HCMD_NAME(MGMT_MCAST_KEY), 341 HCMD_NAME(WEP_KEY), 342 HCMD_NAME(SHARED_MEM_CFG), 343 HCMD_NAME(TDLS_CHANNEL_SWITCH_CMD), 344 HCMD_NAME(MAC_CONTEXT_CMD), 345 HCMD_NAME(TIME_EVENT_CMD), 346 HCMD_NAME(TIME_EVENT_NOTIFICATION), 347 HCMD_NAME(BINDING_CONTEXT_CMD), 348 HCMD_NAME(TIME_QUOTA_CMD), 349 HCMD_NAME(NON_QOS_TX_COUNTER_CMD), 350 HCMD_NAME(LQ_CMD), 351 HCMD_NAME(FW_PAGING_BLOCK_CMD), 352 HCMD_NAME(SCAN_OFFLOAD_REQUEST_CMD), 353 HCMD_NAME(SCAN_OFFLOAD_ABORT_CMD), 354 HCMD_NAME(HOT_SPOT_CMD), 355 HCMD_NAME(SCAN_OFFLOAD_PROFILES_QUERY_CMD), 356 HCMD_NAME(SCAN_OFFLOAD_HOTSPOTS_CONFIG_CMD), 357 HCMD_NAME(SCAN_OFFLOAD_HOTSPOTS_QUERY_CMD), 358 HCMD_NAME(BT_COEX_UPDATE_SW_BOOST), 359 HCMD_NAME(BT_COEX_UPDATE_CORUN_LUT), 360 HCMD_NAME(BT_COEX_UPDATE_REDUCED_TXP), 361 HCMD_NAME(BT_COEX_CI), 362 HCMD_NAME(PHY_CONFIGURATION_CMD), 363 HCMD_NAME(CALIB_RES_NOTIF_PHY_DB), 364 HCMD_NAME(PHY_DB_CMD), 365 HCMD_NAME(SCAN_OFFLOAD_COMPLETE), 366 HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_CMD), 367 HCMD_NAME(SCAN_OFFLOAD_CONFIG_CMD), 368 HCMD_NAME(POWER_TABLE_CMD), 369 HCMD_NAME(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION), 370 HCMD_NAME(REPLY_THERMAL_MNG_BACKOFF), 371 HCMD_NAME(DC2DC_CONFIG_CMD), 372 HCMD_NAME(NVM_ACCESS_CMD), 373 HCMD_NAME(SET_CALIB_DEFAULT_CMD), 374 HCMD_NAME(BEACON_NOTIFICATION), 375 HCMD_NAME(BEACON_TEMPLATE_CMD), 376 HCMD_NAME(TX_ANT_CONFIGURATION_CMD), 377 HCMD_NAME(BT_CONFIG), 378 HCMD_NAME(STATISTICS_CMD), 379 HCMD_NAME(STATISTICS_NOTIFICATION), 380 HCMD_NAME(EOSP_NOTIFICATION), 381 HCMD_NAME(REDUCE_TX_POWER_CMD), 382 HCMD_NAME(CARD_STATE_CMD), 383 HCMD_NAME(CARD_STATE_NOTIFICATION), 384 HCMD_NAME(MISSED_BEACONS_NOTIFICATION), 385 HCMD_NAME(TDLS_CONFIG_CMD), 386 HCMD_NAME(MAC_PM_POWER_TABLE), 387 HCMD_NAME(TDLS_CHANNEL_SWITCH_NOTIFICATION), 388 HCMD_NAME(MFUART_LOAD_NOTIFICATION), 389 HCMD_NAME(RSS_CONFIG_CMD), 390 HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC), 391 HCMD_NAME(REPLY_RX_PHY_CMD), 392 HCMD_NAME(REPLY_RX_MPDU_CMD), 393 HCMD_NAME(BA_NOTIF), 394 HCMD_NAME(MCC_UPDATE_CMD), 395 HCMD_NAME(MCC_CHUB_UPDATE_CMD), 396 HCMD_NAME(MARKER_CMD), 397 HCMD_NAME(BT_COEX_PRIO_TABLE), 398 HCMD_NAME(BT_COEX_PROT_ENV), 399 HCMD_NAME(BT_PROFILE_NOTIFICATION), 400 HCMD_NAME(BCAST_FILTER_CMD), 401 HCMD_NAME(MCAST_FILTER_CMD), 402 HCMD_NAME(REPLY_SF_CFG_CMD), 403 HCMD_NAME(REPLY_BEACON_FILTERING_CMD), 404 HCMD_NAME(D3_CONFIG_CMD), 405 HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD), 406 HCMD_NAME(OFFLOADS_QUERY_CMD), 407 HCMD_NAME(REMOTE_WAKE_CONFIG_CMD), 408 HCMD_NAME(MATCH_FOUND_NOTIFICATION), 409 HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER), 410 HCMD_NAME(DTS_MEASUREMENT_NOTIFICATION), 411 HCMD_NAME(WOWLAN_PATTERNS), 412 HCMD_NAME(WOWLAN_CONFIGURATION), 413 HCMD_NAME(WOWLAN_TSC_RSC_PARAM), 414 HCMD_NAME(WOWLAN_TKIP_PARAM), 415 HCMD_NAME(WOWLAN_KEK_KCK_MATERIAL), 416 HCMD_NAME(WOWLAN_GET_STATUSES), 417 HCMD_NAME(WOWLAN_TX_POWER_PER_DB), 418 HCMD_NAME(SCAN_ITERATION_COMPLETE), 419 HCMD_NAME(D0I3_END_CMD), 420 HCMD_NAME(LTR_CONFIG), 421 HCMD_NAME(REPLY_DEBUG_CMD), 422 }; 423 424 /* Please keep this array *SORTED* by hex value. 425 * Access is done through binary search 426 */ 427 static const struct iwl_hcmd_names iwl_mvm_system_names[] = { 428 HCMD_NAME(SHARED_MEM_CFG_CMD), 429 }; 430 431 /* Please keep this array *SORTED* by hex value. 432 * Access is done through binary search 433 */ 434 static const struct iwl_hcmd_names iwl_mvm_mac_conf_names[] = { 435 HCMD_NAME(LINK_QUALITY_MEASUREMENT_CMD), 436 HCMD_NAME(LINK_QUALITY_MEASUREMENT_COMPLETE_NOTIF), 437 HCMD_NAME(CHANNEL_SWITCH_NOA_NOTIF), 438 }; 439 440 /* Please keep this array *SORTED* by hex value. 441 * Access is done through binary search 442 */ 443 static const struct iwl_hcmd_names iwl_mvm_phy_names[] = { 444 HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE), 445 HCMD_NAME(CTDP_CONFIG_CMD), 446 HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD), 447 HCMD_NAME(CT_KILL_NOTIFICATION), 448 HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE), 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_data_path_names[] = { 455 HCMD_NAME(UPDATE_MU_GROUPS_CMD), 456 HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD), 457 HCMD_NAME(STA_PM_NOTIF), 458 HCMD_NAME(MU_GROUP_MGMT_NOTIF), 459 HCMD_NAME(RX_QUEUES_NOTIFICATION), 460 }; 461 462 /* Please keep this array *SORTED* by hex value. 463 * Access is done through binary search 464 */ 465 static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = { 466 HCMD_NAME(STORED_BEACON_NTF), 467 }; 468 469 /* Please keep this array *SORTED* by hex value. 470 * Access is done through binary search 471 */ 472 static const struct iwl_hcmd_names iwl_mvm_regulatory_and_nvm_names[] = { 473 HCMD_NAME(NVM_ACCESS_COMPLETE), 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 calc_min_backoff(struct iwl_trans *trans, const struct iwl_cfg *cfg) 493 { 494 const struct iwl_pwr_tx_backoff *pwr_tx_backoff = cfg->pwr_tx_backoffs; 495 496 if (!pwr_tx_backoff) 497 return 0; 498 499 while (pwr_tx_backoff->pwr) { 500 if (trans->dflt_pwr_limit >= pwr_tx_backoff->pwr) 501 return pwr_tx_backoff->backoff; 502 503 pwr_tx_backoff++; 504 } 505 506 return 0; 507 } 508 509 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work); 510 511 static void iwl_mvm_tx_unblock_dwork(struct work_struct *work) 512 { 513 struct iwl_mvm *mvm = 514 container_of(work, struct iwl_mvm, cs_tx_unblock_dwork.work); 515 struct ieee80211_vif *tx_blocked_vif; 516 struct iwl_mvm_vif *mvmvif; 517 518 mutex_lock(&mvm->mutex); 519 520 tx_blocked_vif = 521 rcu_dereference_protected(mvm->csa_tx_blocked_vif, 522 lockdep_is_held(&mvm->mutex)); 523 524 if (!tx_blocked_vif) 525 goto unlock; 526 527 mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif); 528 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false); 529 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); 530 unlock: 531 mutex_unlock(&mvm->mutex); 532 } 533 534 static struct iwl_op_mode * 535 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg, 536 const struct iwl_fw *fw, struct dentry *dbgfs_dir) 537 { 538 struct ieee80211_hw *hw; 539 struct iwl_op_mode *op_mode; 540 struct iwl_mvm *mvm; 541 struct iwl_trans_config trans_cfg = {}; 542 static const u8 no_reclaim_cmds[] = { 543 TX_CMD, 544 }; 545 int err, scan_size; 546 u32 min_backoff; 547 548 /* 549 * We use IWL_MVM_STATION_COUNT to check the validity of the station 550 * index all over the driver - check that its value corresponds to the 551 * array size. 552 */ 553 BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT); 554 555 /******************************** 556 * 1. Allocating and configuring HW data 557 ********************************/ 558 hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) + 559 sizeof(struct iwl_mvm), 560 &iwl_mvm_hw_ops); 561 if (!hw) 562 return NULL; 563 564 if (cfg->max_rx_agg_size) 565 hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size; 566 567 if (cfg->max_tx_agg_size) 568 hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size; 569 570 op_mode = hw->priv; 571 572 mvm = IWL_OP_MODE_GET_MVM(op_mode); 573 mvm->dev = trans->dev; 574 mvm->trans = trans; 575 mvm->cfg = cfg; 576 mvm->fw = fw; 577 mvm->hw = hw; 578 579 if (iwl_mvm_has_new_rx_api(mvm)) { 580 op_mode->ops = &iwl_mvm_ops_mq; 581 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_desc); 582 } else { 583 op_mode->ops = &iwl_mvm_ops; 584 trans->rx_mpdu_cmd_hdr_size = 585 sizeof(struct iwl_rx_mpdu_res_start); 586 587 if (WARN_ON(trans->num_rx_queues > 1)) 588 goto out_free; 589 } 590 591 mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0; 592 593 if (!iwl_mvm_is_dqa_supported(mvm)) { 594 mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1; 595 596 if (mvm->cfg->base_params->num_of_queues == 16) { 597 mvm->aux_queue = 11; 598 mvm->first_agg_queue = 12; 599 } else { 600 mvm->aux_queue = 15; 601 mvm->first_agg_queue = 16; 602 } 603 } else { 604 mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE; 605 mvm->first_agg_queue = IWL_MVM_DQA_MIN_DATA_QUEUE; 606 mvm->last_agg_queue = IWL_MVM_DQA_MAX_DATA_QUEUE; 607 } 608 mvm->sf_state = SF_UNINIT; 609 if (iwl_mvm_has_new_tx_api(mvm)) 610 mvm->cur_ucode = IWL_UCODE_REGULAR; 611 else 612 mvm->cur_ucode = IWL_UCODE_INIT; 613 mvm->drop_bcn_ap_mode = true; 614 615 mutex_init(&mvm->mutex); 616 mutex_init(&mvm->d0i3_suspend_mutex); 617 spin_lock_init(&mvm->async_handlers_lock); 618 INIT_LIST_HEAD(&mvm->time_event_list); 619 INIT_LIST_HEAD(&mvm->aux_roc_te_list); 620 INIT_LIST_HEAD(&mvm->async_handlers_list); 621 spin_lock_init(&mvm->time_event_lock); 622 spin_lock_init(&mvm->queue_info_lock); 623 624 INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk); 625 INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk); 626 INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk); 627 INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work); 628 INIT_DELAYED_WORK(&mvm->fw_dump_wk, iwl_mvm_fw_error_dump_wk); 629 INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work); 630 INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk); 631 INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk); 632 633 spin_lock_init(&mvm->d0i3_tx_lock); 634 spin_lock_init(&mvm->refs_lock); 635 skb_queue_head_init(&mvm->d0i3_tx); 636 init_waitqueue_head(&mvm->d0i3_exit_waitq); 637 init_waitqueue_head(&mvm->rx_sync_waitq); 638 639 atomic_set(&mvm->queue_sync_counter, 0); 640 641 SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev); 642 643 INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork); 644 645 /* 646 * Populate the state variables that the transport layer needs 647 * to know about. 648 */ 649 trans_cfg.op_mode = op_mode; 650 trans_cfg.no_reclaim_cmds = no_reclaim_cmds; 651 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds); 652 switch (iwlwifi_mod_params.amsdu_size) { 653 case IWL_AMSDU_DEF: 654 case IWL_AMSDU_4K: 655 trans_cfg.rx_buf_size = IWL_AMSDU_4K; 656 break; 657 case IWL_AMSDU_8K: 658 trans_cfg.rx_buf_size = IWL_AMSDU_8K; 659 break; 660 case IWL_AMSDU_12K: 661 trans_cfg.rx_buf_size = IWL_AMSDU_12K; 662 break; 663 default: 664 pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME, 665 iwlwifi_mod_params.amsdu_size); 666 trans_cfg.rx_buf_size = IWL_AMSDU_4K; 667 } 668 669 /* the hardware splits the A-MSDU */ 670 if (mvm->cfg->mq_rx_supported) 671 trans_cfg.rx_buf_size = IWL_AMSDU_4K; 672 673 trans->wide_cmd_header = true; 674 trans_cfg.bc_table_dword = true; 675 676 trans_cfg.command_groups = iwl_mvm_groups; 677 trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups); 678 679 if (iwl_mvm_is_dqa_supported(mvm)) 680 trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE; 681 else 682 trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE; 683 trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD; 684 trans_cfg.scd_set_active = true; 685 686 trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info, 687 driver_data[2]); 688 689 trans_cfg.sdio_adma_addr = fw->sdio_adma_addr; 690 trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD; 691 692 /* Set a short watchdog for the command queue */ 693 trans_cfg.cmd_q_wdg_timeout = 694 iwl_mvm_get_wd_timeout(mvm, NULL, false, true); 695 696 snprintf(mvm->hw->wiphy->fw_version, 697 sizeof(mvm->hw->wiphy->fw_version), 698 "%s", fw->fw_version); 699 700 /* Configure transport layer */ 701 iwl_trans_configure(mvm->trans, &trans_cfg); 702 703 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD; 704 trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv; 705 trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num; 706 memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv, 707 sizeof(trans->dbg_conf_tlv)); 708 trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv; 709 710 /* set up notification wait support */ 711 iwl_notification_wait_init(&mvm->notif_wait); 712 713 /* Init phy db */ 714 mvm->phy_db = iwl_phy_db_init(trans); 715 if (!mvm->phy_db) { 716 IWL_ERR(mvm, "Cannot init phy_db\n"); 717 goto out_free; 718 } 719 720 IWL_INFO(mvm, "Detected %s, REV=0x%X\n", 721 mvm->cfg->name, mvm->trans->hw_rev); 722 723 if (iwlwifi_mod_params.nvm_file) 724 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file; 725 else 726 IWL_DEBUG_EEPROM(mvm->trans->dev, 727 "working without external nvm file\n"); 728 729 err = iwl_trans_start_hw(mvm->trans); 730 if (err) 731 goto out_free; 732 733 mutex_lock(&mvm->mutex); 734 iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE); 735 if (iwl_mvm_has_new_tx_api(mvm)) 736 err = iwl_run_unified_mvm_ucode(mvm, true); 737 else 738 err = iwl_run_init_mvm_ucode(mvm, true); 739 if (!err || !iwlmvm_mod_params.init_dbg) 740 iwl_mvm_stop_device(mvm); 741 iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE); 742 mutex_unlock(&mvm->mutex); 743 /* returns 0 if successful, 1 if success but in rfkill */ 744 if (err < 0 && !iwlmvm_mod_params.init_dbg) { 745 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err); 746 goto out_free; 747 } 748 749 scan_size = iwl_mvm_scan_size(mvm); 750 751 mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL); 752 if (!mvm->scan_cmd) 753 goto out_free; 754 755 /* Set EBS as successful as long as not stated otherwise by the FW. */ 756 mvm->last_ebs_successful = true; 757 758 err = iwl_mvm_mac_setup_register(mvm); 759 if (err) 760 goto out_free; 761 mvm->hw_registered = true; 762 763 min_backoff = calc_min_backoff(trans, cfg); 764 iwl_mvm_thermal_initialize(mvm, min_backoff); 765 766 err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir); 767 if (err) 768 goto out_unregister; 769 770 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx)); 771 772 /* The transport always starts with a taken reference, we can 773 * release it now if d0i3 is supported */ 774 if (iwl_mvm_is_d0i3_supported(mvm)) 775 iwl_trans_unref(mvm->trans); 776 777 iwl_mvm_tof_init(mvm); 778 779 return op_mode; 780 781 out_unregister: 782 ieee80211_unregister_hw(mvm->hw); 783 mvm->hw_registered = false; 784 iwl_mvm_leds_exit(mvm); 785 iwl_mvm_thermal_exit(mvm); 786 out_free: 787 flush_delayed_work(&mvm->fw_dump_wk); 788 iwl_phy_db_free(mvm->phy_db); 789 kfree(mvm->scan_cmd); 790 iwl_trans_op_mode_leave(trans); 791 792 ieee80211_free_hw(mvm->hw); 793 return NULL; 794 } 795 796 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode) 797 { 798 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 799 int i; 800 801 /* If d0i3 is supported, we have released the reference that 802 * the transport started with, so we should take it back now 803 * that we are leaving. 804 */ 805 if (iwl_mvm_is_d0i3_supported(mvm)) 806 iwl_trans_ref(mvm->trans); 807 808 iwl_mvm_leds_exit(mvm); 809 810 iwl_mvm_thermal_exit(mvm); 811 812 ieee80211_unregister_hw(mvm->hw); 813 814 kfree(mvm->scan_cmd); 815 kfree(mvm->mcast_filter_cmd); 816 mvm->mcast_filter_cmd = NULL; 817 818 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS) 819 kfree(mvm->d3_resume_sram); 820 #endif 821 822 iwl_trans_op_mode_leave(mvm->trans); 823 824 iwl_phy_db_free(mvm->phy_db); 825 mvm->phy_db = NULL; 826 827 iwl_free_nvm_data(mvm->nvm_data); 828 for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++) 829 kfree(mvm->nvm_sections[i].data); 830 831 iwl_mvm_tof_clean(mvm); 832 833 mutex_destroy(&mvm->mutex); 834 mutex_destroy(&mvm->d0i3_suspend_mutex); 835 836 ieee80211_free_hw(mvm->hw); 837 } 838 839 struct iwl_async_handler_entry { 840 struct list_head list; 841 struct iwl_rx_cmd_buffer rxb; 842 enum iwl_rx_handler_context context; 843 void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb); 844 }; 845 846 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm) 847 { 848 struct iwl_async_handler_entry *entry, *tmp; 849 850 spin_lock_bh(&mvm->async_handlers_lock); 851 list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) { 852 iwl_free_rxb(&entry->rxb); 853 list_del(&entry->list); 854 kfree(entry); 855 } 856 spin_unlock_bh(&mvm->async_handlers_lock); 857 } 858 859 static void iwl_mvm_async_handlers_wk(struct work_struct *wk) 860 { 861 struct iwl_mvm *mvm = 862 container_of(wk, struct iwl_mvm, async_handlers_wk); 863 struct iwl_async_handler_entry *entry, *tmp; 864 LIST_HEAD(local_list); 865 866 /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */ 867 868 /* 869 * Sync with Rx path with a lock. Remove all the entries from this list, 870 * add them to a local one (lock free), and then handle them. 871 */ 872 spin_lock_bh(&mvm->async_handlers_lock); 873 list_splice_init(&mvm->async_handlers_list, &local_list); 874 spin_unlock_bh(&mvm->async_handlers_lock); 875 876 list_for_each_entry_safe(entry, tmp, &local_list, list) { 877 if (entry->context == RX_HANDLER_ASYNC_LOCKED) 878 mutex_lock(&mvm->mutex); 879 entry->fn(mvm, &entry->rxb); 880 iwl_free_rxb(&entry->rxb); 881 list_del(&entry->list); 882 if (entry->context == RX_HANDLER_ASYNC_LOCKED) 883 mutex_unlock(&mvm->mutex); 884 kfree(entry); 885 } 886 } 887 888 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm, 889 struct iwl_rx_packet *pkt) 890 { 891 struct iwl_fw_dbg_trigger_tlv *trig; 892 struct iwl_fw_dbg_trigger_cmd *cmds_trig; 893 int i; 894 895 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF)) 896 return; 897 898 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF); 899 cmds_trig = (void *)trig->data; 900 901 if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig)) 902 return; 903 904 for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) { 905 /* don't collect on CMD 0 */ 906 if (!cmds_trig->cmds[i].cmd_id) 907 break; 908 909 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd || 910 cmds_trig->cmds[i].group_id != pkt->hdr.group_id) 911 continue; 912 913 iwl_mvm_fw_dbg_collect_trig(mvm, trig, 914 "CMD 0x%02x.%02x received", 915 pkt->hdr.group_id, pkt->hdr.cmd); 916 break; 917 } 918 } 919 920 static void iwl_mvm_rx_common(struct iwl_mvm *mvm, 921 struct iwl_rx_cmd_buffer *rxb, 922 struct iwl_rx_packet *pkt) 923 { 924 int i; 925 926 iwl_mvm_rx_check_trigger(mvm, pkt); 927 928 /* 929 * Do the notification wait before RX handlers so 930 * even if the RX handler consumes the RXB we have 931 * access to it in the notification wait entry. 932 */ 933 iwl_notification_wait_notify(&mvm->notif_wait, pkt); 934 935 for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) { 936 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i]; 937 struct iwl_async_handler_entry *entry; 938 939 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) 940 continue; 941 942 if (rx_h->context == RX_HANDLER_SYNC) { 943 rx_h->fn(mvm, rxb); 944 return; 945 } 946 947 entry = kzalloc(sizeof(*entry), GFP_ATOMIC); 948 /* we can't do much... */ 949 if (!entry) 950 return; 951 952 entry->rxb._page = rxb_steal_page(rxb); 953 entry->rxb._offset = rxb->_offset; 954 entry->rxb._rx_page_order = rxb->_rx_page_order; 955 entry->fn = rx_h->fn; 956 entry->context = rx_h->context; 957 spin_lock(&mvm->async_handlers_lock); 958 list_add_tail(&entry->list, &mvm->async_handlers_list); 959 spin_unlock(&mvm->async_handlers_lock); 960 schedule_work(&mvm->async_handlers_wk); 961 break; 962 } 963 } 964 965 static void iwl_mvm_rx(struct iwl_op_mode *op_mode, 966 struct napi_struct *napi, 967 struct iwl_rx_cmd_buffer *rxb) 968 { 969 struct iwl_rx_packet *pkt = rxb_addr(rxb); 970 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 971 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); 972 973 if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))) 974 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb); 975 else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD)) 976 iwl_mvm_rx_rx_phy_cmd(mvm, rxb); 977 else 978 iwl_mvm_rx_common(mvm, rxb, pkt); 979 } 980 981 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode, 982 struct napi_struct *napi, 983 struct iwl_rx_cmd_buffer *rxb) 984 { 985 struct iwl_rx_packet *pkt = rxb_addr(rxb); 986 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 987 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); 988 989 if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))) 990 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0); 991 else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP, 992 RX_QUEUES_NOTIFICATION))) 993 iwl_mvm_rx_queue_notif(mvm, rxb, 0); 994 else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)) 995 iwl_mvm_rx_frame_release(mvm, napi, rxb, 0); 996 else 997 iwl_mvm_rx_common(mvm, rxb, pkt); 998 } 999 1000 void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq) 1001 { 1002 int q; 1003 1004 if (WARN_ON_ONCE(!mq)) 1005 return; 1006 1007 for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) { 1008 if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) { 1009 IWL_DEBUG_TX_QUEUES(mvm, 1010 "mac80211 %d already stopped\n", q); 1011 continue; 1012 } 1013 1014 ieee80211_stop_queue(mvm->hw, q); 1015 } 1016 } 1017 1018 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode, 1019 const struct iwl_device_cmd *cmd) 1020 { 1021 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1022 1023 /* 1024 * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA 1025 * commands that need to block the Tx queues. 1026 */ 1027 iwl_trans_block_txq_ptrs(mvm->trans, false); 1028 } 1029 1030 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue) 1031 { 1032 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1033 unsigned long mq; 1034 1035 spin_lock_bh(&mvm->queue_info_lock); 1036 mq = mvm->queue_info[hw_queue].hw_queue_to_mac80211; 1037 spin_unlock_bh(&mvm->queue_info_lock); 1038 1039 iwl_mvm_stop_mac_queues(mvm, mq); 1040 } 1041 1042 void iwl_mvm_start_mac_queues(struct iwl_mvm *mvm, unsigned long mq) 1043 { 1044 int q; 1045 1046 if (WARN_ON_ONCE(!mq)) 1047 return; 1048 1049 for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) { 1050 if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) { 1051 IWL_DEBUG_TX_QUEUES(mvm, 1052 "mac80211 %d still stopped\n", q); 1053 continue; 1054 } 1055 1056 ieee80211_wake_queue(mvm->hw, q); 1057 } 1058 } 1059 1060 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue) 1061 { 1062 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1063 unsigned long mq; 1064 1065 spin_lock_bh(&mvm->queue_info_lock); 1066 mq = mvm->queue_info[hw_queue].hw_queue_to_mac80211; 1067 spin_unlock_bh(&mvm->queue_info_lock); 1068 1069 iwl_mvm_start_mac_queues(mvm, mq); 1070 } 1071 1072 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state) 1073 { 1074 if (state) 1075 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); 1076 else 1077 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); 1078 1079 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm)); 1080 } 1081 1082 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state) 1083 { 1084 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1085 bool calibrating = ACCESS_ONCE(mvm->calibrating); 1086 1087 if (state) 1088 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); 1089 else 1090 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); 1091 1092 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm)); 1093 1094 /* iwl_run_init_mvm_ucode is waiting for results, abort it */ 1095 if (calibrating) 1096 iwl_abort_notification_waits(&mvm->notif_wait); 1097 1098 /* 1099 * Stop the device if we run OPERATIONAL firmware or if we are in the 1100 * middle of the calibrations. 1101 */ 1102 return state && (mvm->cur_ucode != IWL_UCODE_INIT || calibrating); 1103 } 1104 1105 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb) 1106 { 1107 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1108 struct ieee80211_tx_info *info; 1109 1110 info = IEEE80211_SKB_CB(skb); 1111 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]); 1112 ieee80211_free_txskb(mvm->hw, skb); 1113 } 1114 1115 struct iwl_mvm_reprobe { 1116 struct device *dev; 1117 struct work_struct work; 1118 }; 1119 1120 static void iwl_mvm_reprobe_wk(struct work_struct *wk) 1121 { 1122 struct iwl_mvm_reprobe *reprobe; 1123 1124 reprobe = container_of(wk, struct iwl_mvm_reprobe, work); 1125 if (device_reprobe(reprobe->dev)) 1126 dev_err(reprobe->dev, "reprobe failed!\n"); 1127 kfree(reprobe); 1128 module_put(THIS_MODULE); 1129 } 1130 1131 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work) 1132 { 1133 struct iwl_mvm *mvm = 1134 container_of(work, struct iwl_mvm, fw_dump_wk.work); 1135 1136 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT)) 1137 return; 1138 1139 mutex_lock(&mvm->mutex); 1140 1141 /* stop recording */ 1142 if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000) { 1143 iwl_set_bits_prph(mvm->trans, MON_BUFF_SAMPLE_CTL, 0x100); 1144 } else { 1145 iwl_write_prph(mvm->trans, DBGC_IN_SAMPLE, 0); 1146 /* wait before we collect the data till the DBGC stop */ 1147 udelay(100); 1148 } 1149 1150 iwl_mvm_fw_error_dump(mvm); 1151 1152 /* start recording again if the firmware is not crashed */ 1153 WARN_ON_ONCE((!test_bit(STATUS_FW_ERROR, &mvm->trans->status)) && 1154 mvm->fw->dbg_dest_tlv && 1155 iwl_mvm_start_fw_dbg_conf(mvm, mvm->fw_dbg_conf)); 1156 1157 mutex_unlock(&mvm->mutex); 1158 1159 iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT); 1160 } 1161 1162 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error) 1163 { 1164 iwl_abort_notification_waits(&mvm->notif_wait); 1165 1166 /* 1167 * This is a bit racy, but worst case we tell mac80211 about 1168 * a stopped/aborted scan when that was already done which 1169 * is not a problem. It is necessary to abort any os scan 1170 * here because mac80211 requires having the scan cleared 1171 * before restarting. 1172 * We'll reset the scan_status to NONE in restart cleanup in 1173 * the next start() call from mac80211. If restart isn't called 1174 * (no fw restart) scan status will stay busy. 1175 */ 1176 iwl_mvm_report_scan_aborted(mvm); 1177 1178 /* 1179 * If we're restarting already, don't cycle restarts. 1180 * If INIT fw asserted, it will likely fail again. 1181 * If WoWLAN fw asserted, don't restart either, mac80211 1182 * can't recover this since we're already half suspended. 1183 */ 1184 if (!mvm->restart_fw && fw_error) { 1185 iwl_mvm_fw_dbg_collect_desc(mvm, &iwl_mvm_dump_desc_assert, 1186 NULL); 1187 } else if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART, 1188 &mvm->status)) { 1189 struct iwl_mvm_reprobe *reprobe; 1190 1191 IWL_ERR(mvm, 1192 "Firmware error during reconfiguration - reprobe!\n"); 1193 1194 /* 1195 * get a module reference to avoid doing this while unloading 1196 * anyway and to avoid scheduling a work with code that's 1197 * being removed. 1198 */ 1199 if (!try_module_get(THIS_MODULE)) { 1200 IWL_ERR(mvm, "Module is being unloaded - abort\n"); 1201 return; 1202 } 1203 1204 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC); 1205 if (!reprobe) { 1206 module_put(THIS_MODULE); 1207 return; 1208 } 1209 reprobe->dev = mvm->trans->dev; 1210 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk); 1211 schedule_work(&reprobe->work); 1212 } else if (mvm->cur_ucode == IWL_UCODE_REGULAR && 1213 mvm->hw_registered) { 1214 /* don't let the transport/FW power down */ 1215 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); 1216 1217 if (fw_error && mvm->restart_fw > 0) 1218 mvm->restart_fw--; 1219 ieee80211_restart_hw(mvm->hw); 1220 } 1221 } 1222 1223 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode) 1224 { 1225 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1226 1227 iwl_mvm_dump_nic_error_log(mvm); 1228 1229 iwl_mvm_nic_restart(mvm, true); 1230 } 1231 1232 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode) 1233 { 1234 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1235 1236 WARN_ON(1); 1237 iwl_mvm_nic_restart(mvm, true); 1238 } 1239 1240 struct iwl_d0i3_iter_data { 1241 struct iwl_mvm *mvm; 1242 struct ieee80211_vif *connected_vif; 1243 u8 ap_sta_id; 1244 u8 vif_count; 1245 u8 offloading_tid; 1246 bool disable_offloading; 1247 }; 1248 1249 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm, 1250 struct ieee80211_vif *vif, 1251 struct iwl_d0i3_iter_data *iter_data) 1252 { 1253 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1254 struct iwl_mvm_sta *mvmsta; 1255 u32 available_tids = 0; 1256 u8 tid; 1257 1258 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION || 1259 mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT)) 1260 return false; 1261 1262 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); 1263 if (!mvmsta) 1264 return false; 1265 1266 spin_lock_bh(&mvmsta->lock); 1267 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1268 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 1269 1270 /* 1271 * in case of pending tx packets, don't use this tid 1272 * for offloading in order to prevent reuse of the same 1273 * qos seq counters. 1274 */ 1275 if (iwl_mvm_tid_queued(tid_data)) 1276 continue; 1277 1278 if (tid_data->state != IWL_AGG_OFF) 1279 continue; 1280 1281 available_tids |= BIT(tid); 1282 } 1283 spin_unlock_bh(&mvmsta->lock); 1284 1285 /* 1286 * disallow protocol offloading if we have no available tid 1287 * (with no pending frames and no active aggregation, 1288 * as we don't handle "holes" properly - the scheduler needs the 1289 * frame's seq number and TFD index to match) 1290 */ 1291 if (!available_tids) 1292 return true; 1293 1294 /* for simplicity, just use the first available tid */ 1295 iter_data->offloading_tid = ffs(available_tids) - 1; 1296 return false; 1297 } 1298 1299 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac, 1300 struct ieee80211_vif *vif) 1301 { 1302 struct iwl_d0i3_iter_data *data = _data; 1303 struct iwl_mvm *mvm = data->mvm; 1304 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1305 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; 1306 1307 IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr); 1308 if (vif->type != NL80211_IFTYPE_STATION || 1309 !vif->bss_conf.assoc) 1310 return; 1311 1312 /* 1313 * in case of pending tx packets or active aggregations, 1314 * avoid offloading features in order to prevent reuse of 1315 * the same qos seq counters. 1316 */ 1317 if (iwl_mvm_disallow_offloading(mvm, vif, data)) 1318 data->disable_offloading = true; 1319 1320 iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags); 1321 iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading, 1322 false, flags); 1323 1324 /* 1325 * on init/association, mvm already configures POWER_TABLE_CMD 1326 * and REPLY_MCAST_FILTER_CMD, so currently don't 1327 * reconfigure them (we might want to use different 1328 * params later on, though). 1329 */ 1330 data->ap_sta_id = mvmvif->ap_sta_id; 1331 data->vif_count++; 1332 1333 /* 1334 * no new commands can be sent at this stage, so it's safe 1335 * to save the vif pointer during d0i3 entrance. 1336 */ 1337 data->connected_vif = vif; 1338 } 1339 1340 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm, 1341 struct iwl_wowlan_config_cmd *cmd, 1342 struct iwl_d0i3_iter_data *iter_data) 1343 { 1344 struct ieee80211_sta *ap_sta; 1345 struct iwl_mvm_sta *mvm_ap_sta; 1346 1347 if (iter_data->ap_sta_id == IWL_MVM_STATION_COUNT) 1348 return; 1349 1350 rcu_read_lock(); 1351 1352 ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]); 1353 if (IS_ERR_OR_NULL(ap_sta)) 1354 goto out; 1355 1356 mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta); 1357 cmd->is_11n_connection = ap_sta->ht_cap.ht_supported; 1358 cmd->offloading_tid = iter_data->offloading_tid; 1359 cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING | 1360 ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON; 1361 /* 1362 * The d0i3 uCode takes care of the nonqos counters, 1363 * so configure only the qos seq ones. 1364 */ 1365 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd); 1366 out: 1367 rcu_read_unlock(); 1368 } 1369 1370 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode) 1371 { 1372 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1373 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; 1374 int ret; 1375 struct iwl_d0i3_iter_data d0i3_iter_data = { 1376 .mvm = mvm, 1377 }; 1378 struct iwl_wowlan_config_cmd wowlan_config_cmd = { 1379 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME | 1380 IWL_WOWLAN_WAKEUP_BEACON_MISS | 1381 IWL_WOWLAN_WAKEUP_LINK_CHANGE), 1382 }; 1383 struct iwl_d3_manager_config d3_cfg_cmd = { 1384 .min_sleep_time = cpu_to_le32(1000), 1385 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR), 1386 }; 1387 1388 IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n"); 1389 1390 if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR)) 1391 return -EINVAL; 1392 1393 set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1394 1395 /* 1396 * iwl_mvm_ref_sync takes a reference before checking the flag. 1397 * so by checking there is no held reference we prevent a state 1398 * in which iwl_mvm_ref_sync continues successfully while we 1399 * configure the firmware to enter d0i3 1400 */ 1401 if (iwl_mvm_ref_taken(mvm)) { 1402 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n"); 1403 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1404 wake_up(&mvm->d0i3_exit_waitq); 1405 return 1; 1406 } 1407 1408 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1409 IEEE80211_IFACE_ITER_NORMAL, 1410 iwl_mvm_enter_d0i3_iterator, 1411 &d0i3_iter_data); 1412 if (d0i3_iter_data.vif_count == 1) { 1413 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id; 1414 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading; 1415 } else { 1416 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1); 1417 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; 1418 mvm->d0i3_offloading = false; 1419 } 1420 1421 /* make sure we have no running tx while configuring the seqno */ 1422 synchronize_net(); 1423 1424 /* Flush the hw queues, in case something got queued during entry */ 1425 ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm), flags); 1426 if (ret) 1427 return ret; 1428 1429 /* configure wowlan configuration only if needed */ 1430 if (mvm->d0i3_ap_sta_id != IWL_MVM_STATION_COUNT) { 1431 /* wake on beacons only if beacon storing isn't supported */ 1432 if (!fw_has_capa(&mvm->fw->ucode_capa, 1433 IWL_UCODE_TLV_CAPA_BEACON_STORING)) 1434 wowlan_config_cmd.wakeup_filter |= 1435 cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING); 1436 1437 iwl_mvm_wowlan_config_key_params(mvm, 1438 d0i3_iter_data.connected_vif, 1439 true, flags); 1440 1441 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd, 1442 &d0i3_iter_data); 1443 1444 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags, 1445 sizeof(wowlan_config_cmd), 1446 &wowlan_config_cmd); 1447 if (ret) 1448 return ret; 1449 } 1450 1451 return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD, 1452 flags | CMD_MAKE_TRANS_IDLE, 1453 sizeof(d3_cfg_cmd), &d3_cfg_cmd); 1454 } 1455 1456 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac, 1457 struct ieee80211_vif *vif) 1458 { 1459 struct iwl_mvm *mvm = _data; 1460 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO; 1461 1462 IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr); 1463 if (vif->type != NL80211_IFTYPE_STATION || 1464 !vif->bss_conf.assoc) 1465 return; 1466 1467 iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags); 1468 } 1469 1470 struct iwl_mvm_d0i3_exit_work_iter_data { 1471 struct iwl_mvm *mvm; 1472 struct iwl_wowlan_status *status; 1473 u32 wakeup_reasons; 1474 }; 1475 1476 static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac, 1477 struct ieee80211_vif *vif) 1478 { 1479 struct iwl_mvm_d0i3_exit_work_iter_data *data = _data; 1480 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1481 u32 reasons = data->wakeup_reasons; 1482 1483 /* consider only the relevant station interface */ 1484 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc || 1485 data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id) 1486 return; 1487 1488 if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH) 1489 iwl_mvm_connection_loss(data->mvm, vif, "D0i3"); 1490 else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON) 1491 ieee80211_beacon_loss(vif); 1492 else 1493 iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status); 1494 } 1495 1496 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq) 1497 { 1498 struct ieee80211_sta *sta = NULL; 1499 struct iwl_mvm_sta *mvm_ap_sta; 1500 int i; 1501 bool wake_queues = false; 1502 1503 lockdep_assert_held(&mvm->mutex); 1504 1505 spin_lock_bh(&mvm->d0i3_tx_lock); 1506 1507 if (mvm->d0i3_ap_sta_id == IWL_MVM_STATION_COUNT) 1508 goto out; 1509 1510 IWL_DEBUG_RPM(mvm, "re-enqueue packets\n"); 1511 1512 /* get the sta in order to update seq numbers and re-enqueue skbs */ 1513 sta = rcu_dereference_protected( 1514 mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id], 1515 lockdep_is_held(&mvm->mutex)); 1516 1517 if (IS_ERR_OR_NULL(sta)) { 1518 sta = NULL; 1519 goto out; 1520 } 1521 1522 if (mvm->d0i3_offloading && qos_seq) { 1523 /* update qos seq numbers if offloading was enabled */ 1524 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta); 1525 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1526 u16 seq = le16_to_cpu(qos_seq[i]); 1527 /* firmware stores last-used one, we store next one */ 1528 seq += 0x10; 1529 mvm_ap_sta->tid_data[i].seq_number = seq; 1530 } 1531 } 1532 out: 1533 /* re-enqueue (or drop) all packets */ 1534 while (!skb_queue_empty(&mvm->d0i3_tx)) { 1535 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx); 1536 1537 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta)) 1538 ieee80211_free_txskb(mvm->hw, skb); 1539 1540 /* if the skb_queue is not empty, we need to wake queues */ 1541 wake_queues = true; 1542 } 1543 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1544 wake_up(&mvm->d0i3_exit_waitq); 1545 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; 1546 if (wake_queues) 1547 ieee80211_wake_queues(mvm->hw); 1548 1549 spin_unlock_bh(&mvm->d0i3_tx_lock); 1550 } 1551 1552 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk) 1553 { 1554 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work); 1555 struct iwl_host_cmd get_status_cmd = { 1556 .id = WOWLAN_GET_STATUSES, 1557 .flags = CMD_HIGH_PRIO | CMD_WANT_SKB, 1558 }; 1559 struct iwl_mvm_d0i3_exit_work_iter_data iter_data = { 1560 .mvm = mvm, 1561 }; 1562 1563 struct iwl_wowlan_status *status; 1564 int ret; 1565 u32 wakeup_reasons = 0; 1566 __le16 *qos_seq = NULL; 1567 1568 mutex_lock(&mvm->mutex); 1569 ret = iwl_mvm_send_cmd(mvm, &get_status_cmd); 1570 if (ret) 1571 goto out; 1572 1573 if (!get_status_cmd.resp_pkt) 1574 goto out; 1575 1576 status = (void *)get_status_cmd.resp_pkt->data; 1577 wakeup_reasons = le32_to_cpu(status->wakeup_reasons); 1578 qos_seq = status->qos_seq_ctr; 1579 1580 IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons); 1581 1582 iter_data.wakeup_reasons = wakeup_reasons; 1583 iter_data.status = status; 1584 ieee80211_iterate_active_interfaces(mvm->hw, 1585 IEEE80211_IFACE_ITER_NORMAL, 1586 iwl_mvm_d0i3_exit_work_iter, 1587 &iter_data); 1588 out: 1589 iwl_mvm_d0i3_enable_tx(mvm, qos_seq); 1590 1591 IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n", 1592 wakeup_reasons); 1593 1594 /* qos_seq might point inside resp_pkt, so free it only now */ 1595 if (get_status_cmd.resp_pkt) 1596 iwl_free_resp(&get_status_cmd); 1597 1598 /* the FW might have updated the regdomain */ 1599 iwl_mvm_update_changed_regdom(mvm); 1600 1601 iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK); 1602 mutex_unlock(&mvm->mutex); 1603 } 1604 1605 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm) 1606 { 1607 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE | 1608 CMD_WAKE_UP_TRANS; 1609 int ret; 1610 1611 IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n"); 1612 1613 if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR)) 1614 return -EINVAL; 1615 1616 mutex_lock(&mvm->d0i3_suspend_mutex); 1617 if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) { 1618 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n"); 1619 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags); 1620 mutex_unlock(&mvm->d0i3_suspend_mutex); 1621 return 0; 1622 } 1623 mutex_unlock(&mvm->d0i3_suspend_mutex); 1624 1625 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL); 1626 if (ret) 1627 goto out; 1628 1629 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1630 IEEE80211_IFACE_ITER_NORMAL, 1631 iwl_mvm_exit_d0i3_iterator, 1632 mvm); 1633 out: 1634 schedule_work(&mvm->d0i3_exit_work); 1635 return ret; 1636 } 1637 1638 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode) 1639 { 1640 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1641 1642 iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK); 1643 return _iwl_mvm_exit_d0i3(mvm); 1644 } 1645 1646 #define IWL_MVM_COMMON_OPS \ 1647 /* these could be differentiated */ \ 1648 .async_cb = iwl_mvm_async_cb, \ 1649 .queue_full = iwl_mvm_stop_sw_queue, \ 1650 .queue_not_full = iwl_mvm_wake_sw_queue, \ 1651 .hw_rf_kill = iwl_mvm_set_hw_rfkill_state, \ 1652 .free_skb = iwl_mvm_free_skb, \ 1653 .nic_error = iwl_mvm_nic_error, \ 1654 .cmd_queue_full = iwl_mvm_cmd_queue_full, \ 1655 .nic_config = iwl_mvm_nic_config, \ 1656 .enter_d0i3 = iwl_mvm_enter_d0i3, \ 1657 .exit_d0i3 = iwl_mvm_exit_d0i3, \ 1658 /* as we only register one, these MUST be common! */ \ 1659 .start = iwl_op_mode_mvm_start, \ 1660 .stop = iwl_op_mode_mvm_stop 1661 1662 static const struct iwl_op_mode_ops iwl_mvm_ops = { 1663 IWL_MVM_COMMON_OPS, 1664 .rx = iwl_mvm_rx, 1665 }; 1666 1667 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode, 1668 struct napi_struct *napi, 1669 struct iwl_rx_cmd_buffer *rxb, 1670 unsigned int queue) 1671 { 1672 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1673 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1674 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); 1675 1676 if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))) 1677 iwl_mvm_rx_frame_release(mvm, napi, rxb, queue); 1678 else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP, 1679 RX_QUEUES_NOTIFICATION))) 1680 iwl_mvm_rx_queue_notif(mvm, rxb, queue); 1681 else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))) 1682 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue); 1683 } 1684 1685 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = { 1686 IWL_MVM_COMMON_OPS, 1687 .rx = iwl_mvm_rx_mq, 1688 .rx_rss = iwl_mvm_rx_mq_rss, 1689 }; 1690