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-dbg.h" 88 #include "fw-api.h" 89 #include "fw-api-scan.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 RX_HANDLER(ANTENNA_COUPLING_NOTIFICATION, 261 iwl_mvm_rx_ant_coupling_notif, RX_HANDLER_ASYNC_LOCKED), 262 263 RX_HANDLER(BA_WINDOW_STATUS_NOTIFICATION_ID, 264 iwl_mvm_window_status_notif, RX_HANDLER_SYNC), 265 266 RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif, 267 RX_HANDLER_SYNC), 268 RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc, 269 RX_HANDLER_ASYNC_LOCKED), 270 271 RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, RX_HANDLER_SYNC), 272 273 RX_HANDLER(SCAN_ITERATION_COMPLETE, 274 iwl_mvm_rx_lmac_scan_iter_complete_notif, RX_HANDLER_SYNC), 275 RX_HANDLER(SCAN_OFFLOAD_COMPLETE, 276 iwl_mvm_rx_lmac_scan_complete_notif, 277 RX_HANDLER_ASYNC_LOCKED), 278 RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_match_found, 279 RX_HANDLER_SYNC), 280 RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif, 281 RX_HANDLER_ASYNC_LOCKED), 282 RX_HANDLER(SCAN_ITERATION_COMPLETE_UMAC, 283 iwl_mvm_rx_umac_scan_iter_complete_notif, RX_HANDLER_SYNC), 284 285 RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif, 286 RX_HANDLER_SYNC), 287 288 RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif, 289 RX_HANDLER_SYNC), 290 291 RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, RX_HANDLER_SYNC), 292 RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION, 293 iwl_mvm_power_uapsd_misbehaving_ap_notif, RX_HANDLER_SYNC), 294 RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif, 295 RX_HANDLER_ASYNC_LOCKED), 296 RX_HANDLER_GRP(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE, 297 iwl_mvm_temp_notif, RX_HANDLER_ASYNC_UNLOCKED), 298 RX_HANDLER_GRP(PHY_OPS_GROUP, CT_KILL_NOTIFICATION, 299 iwl_mvm_ct_kill_notif, RX_HANDLER_SYNC), 300 301 RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif, 302 RX_HANDLER_ASYNC_LOCKED), 303 RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif, 304 RX_HANDLER_SYNC), 305 RX_HANDLER(TOF_NOTIFICATION, iwl_mvm_tof_resp_handler, 306 RX_HANDLER_ASYNC_LOCKED), 307 RX_HANDLER_GRP(DEBUG_GROUP, MFU_ASSERT_DUMP_NTF, 308 iwl_mvm_mfu_assert_dump_notif, RX_HANDLER_SYNC), 309 RX_HANDLER_GRP(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF, 310 iwl_mvm_rx_stored_beacon_notif, RX_HANDLER_SYNC), 311 RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF, 312 iwl_mvm_mu_mimo_grp_notif, RX_HANDLER_SYNC), 313 RX_HANDLER_GRP(DATA_PATH_GROUP, STA_PM_NOTIF, 314 iwl_mvm_sta_pm_notif, RX_HANDLER_SYNC), 315 }; 316 #undef RX_HANDLER 317 #undef RX_HANDLER_GRP 318 319 /* Please keep this array *SORTED* by hex value. 320 * Access is done through binary search 321 */ 322 static const struct iwl_hcmd_names iwl_mvm_legacy_names[] = { 323 HCMD_NAME(MVM_ALIVE), 324 HCMD_NAME(REPLY_ERROR), 325 HCMD_NAME(ECHO_CMD), 326 HCMD_NAME(INIT_COMPLETE_NOTIF), 327 HCMD_NAME(PHY_CONTEXT_CMD), 328 HCMD_NAME(DBG_CFG), 329 HCMD_NAME(ANTENNA_COUPLING_NOTIFICATION), 330 HCMD_NAME(SCAN_CFG_CMD), 331 HCMD_NAME(SCAN_REQ_UMAC), 332 HCMD_NAME(SCAN_ABORT_UMAC), 333 HCMD_NAME(SCAN_COMPLETE_UMAC), 334 HCMD_NAME(TOF_CMD), 335 HCMD_NAME(TOF_NOTIFICATION), 336 HCMD_NAME(BA_WINDOW_STATUS_NOTIFICATION_ID), 337 HCMD_NAME(ADD_STA_KEY), 338 HCMD_NAME(ADD_STA), 339 HCMD_NAME(REMOVE_STA), 340 HCMD_NAME(FW_GET_ITEM_CMD), 341 HCMD_NAME(TX_CMD), 342 HCMD_NAME(SCD_QUEUE_CFG), 343 HCMD_NAME(TXPATH_FLUSH), 344 HCMD_NAME(MGMT_MCAST_KEY), 345 HCMD_NAME(WEP_KEY), 346 HCMD_NAME(SHARED_MEM_CFG), 347 HCMD_NAME(TDLS_CHANNEL_SWITCH_CMD), 348 HCMD_NAME(MAC_CONTEXT_CMD), 349 HCMD_NAME(TIME_EVENT_CMD), 350 HCMD_NAME(TIME_EVENT_NOTIFICATION), 351 HCMD_NAME(BINDING_CONTEXT_CMD), 352 HCMD_NAME(TIME_QUOTA_CMD), 353 HCMD_NAME(NON_QOS_TX_COUNTER_CMD), 354 HCMD_NAME(LQ_CMD), 355 HCMD_NAME(FW_PAGING_BLOCK_CMD), 356 HCMD_NAME(SCAN_OFFLOAD_REQUEST_CMD), 357 HCMD_NAME(SCAN_OFFLOAD_ABORT_CMD), 358 HCMD_NAME(HOT_SPOT_CMD), 359 HCMD_NAME(SCAN_OFFLOAD_PROFILES_QUERY_CMD), 360 HCMD_NAME(BT_COEX_UPDATE_CORUN_LUT), 361 HCMD_NAME(BT_COEX_UPDATE_REDUCED_TXP), 362 HCMD_NAME(BT_COEX_CI), 363 HCMD_NAME(PHY_CONFIGURATION_CMD), 364 HCMD_NAME(CALIB_RES_NOTIF_PHY_DB), 365 HCMD_NAME(PHY_DB_CMD), 366 HCMD_NAME(SCAN_OFFLOAD_COMPLETE), 367 HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_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(BEACON_NOTIFICATION), 374 HCMD_NAME(BEACON_TEMPLATE_CMD), 375 HCMD_NAME(TX_ANT_CONFIGURATION_CMD), 376 HCMD_NAME(BT_CONFIG), 377 HCMD_NAME(STATISTICS_CMD), 378 HCMD_NAME(STATISTICS_NOTIFICATION), 379 HCMD_NAME(EOSP_NOTIFICATION), 380 HCMD_NAME(REDUCE_TX_POWER_CMD), 381 HCMD_NAME(CARD_STATE_NOTIFICATION), 382 HCMD_NAME(MISSED_BEACONS_NOTIFICATION), 383 HCMD_NAME(TDLS_CONFIG_CMD), 384 HCMD_NAME(MAC_PM_POWER_TABLE), 385 HCMD_NAME(TDLS_CHANNEL_SWITCH_NOTIFICATION), 386 HCMD_NAME(MFUART_LOAD_NOTIFICATION), 387 HCMD_NAME(RSS_CONFIG_CMD), 388 HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC), 389 HCMD_NAME(REPLY_RX_PHY_CMD), 390 HCMD_NAME(REPLY_RX_MPDU_CMD), 391 HCMD_NAME(BA_NOTIF), 392 HCMD_NAME(MCC_UPDATE_CMD), 393 HCMD_NAME(MCC_CHUB_UPDATE_CMD), 394 HCMD_NAME(MARKER_CMD), 395 HCMD_NAME(BT_PROFILE_NOTIFICATION), 396 HCMD_NAME(BCAST_FILTER_CMD), 397 HCMD_NAME(MCAST_FILTER_CMD), 398 HCMD_NAME(REPLY_SF_CFG_CMD), 399 HCMD_NAME(REPLY_BEACON_FILTERING_CMD), 400 HCMD_NAME(D3_CONFIG_CMD), 401 HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD), 402 HCMD_NAME(OFFLOADS_QUERY_CMD), 403 HCMD_NAME(REMOTE_WAKE_CONFIG_CMD), 404 HCMD_NAME(MATCH_FOUND_NOTIFICATION), 405 HCMD_NAME(DTS_MEASUREMENT_NOTIFICATION), 406 HCMD_NAME(WOWLAN_PATTERNS), 407 HCMD_NAME(WOWLAN_CONFIGURATION), 408 HCMD_NAME(WOWLAN_TSC_RSC_PARAM), 409 HCMD_NAME(WOWLAN_TKIP_PARAM), 410 HCMD_NAME(WOWLAN_KEK_KCK_MATERIAL), 411 HCMD_NAME(WOWLAN_GET_STATUSES), 412 HCMD_NAME(SCAN_ITERATION_COMPLETE), 413 HCMD_NAME(D0I3_END_CMD), 414 HCMD_NAME(LTR_CONFIG), 415 }; 416 417 /* Please keep this array *SORTED* by hex value. 418 * Access is done through binary search 419 */ 420 static const struct iwl_hcmd_names iwl_mvm_system_names[] = { 421 HCMD_NAME(SHARED_MEM_CFG_CMD), 422 HCMD_NAME(INIT_EXTENDED_CFG_CMD), 423 }; 424 425 /* Please keep this array *SORTED* by hex value. 426 * Access is done through binary search 427 */ 428 static const struct iwl_hcmd_names iwl_mvm_mac_conf_names[] = { 429 HCMD_NAME(LINK_QUALITY_MEASUREMENT_CMD), 430 HCMD_NAME(LINK_QUALITY_MEASUREMENT_COMPLETE_NOTIF), 431 HCMD_NAME(CHANNEL_SWITCH_NOA_NOTIF), 432 }; 433 434 /* Please keep this array *SORTED* by hex value. 435 * Access is done through binary search 436 */ 437 static const struct iwl_hcmd_names iwl_mvm_phy_names[] = { 438 HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE), 439 HCMD_NAME(CTDP_CONFIG_CMD), 440 HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD), 441 HCMD_NAME(GEO_TX_POWER_LIMIT), 442 HCMD_NAME(CT_KILL_NOTIFICATION), 443 HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE), 444 }; 445 446 /* Please keep this array *SORTED* by hex value. 447 * Access is done through binary search 448 */ 449 static const struct iwl_hcmd_names iwl_mvm_data_path_names[] = { 450 HCMD_NAME(DQA_ENABLE_CMD), 451 HCMD_NAME(UPDATE_MU_GROUPS_CMD), 452 HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD), 453 HCMD_NAME(STA_PM_NOTIF), 454 HCMD_NAME(MU_GROUP_MGMT_NOTIF), 455 HCMD_NAME(RX_QUEUES_NOTIFICATION), 456 }; 457 458 /* Please keep this array *SORTED* by hex value. 459 * Access is done through binary search 460 */ 461 static const struct iwl_hcmd_names iwl_mvm_debug_names[] = { 462 HCMD_NAME(MFU_ASSERT_DUMP_NTF), 463 }; 464 465 /* Please keep this array *SORTED* by hex value. 466 * Access is done through binary search 467 */ 468 static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = { 469 HCMD_NAME(STORED_BEACON_NTF), 470 }; 471 472 /* Please keep this array *SORTED* by hex value. 473 * Access is done through binary search 474 */ 475 static const struct iwl_hcmd_names iwl_mvm_regulatory_and_nvm_names[] = { 476 HCMD_NAME(NVM_ACCESS_COMPLETE), 477 HCMD_NAME(NVM_GET_INFO), 478 }; 479 480 static const struct iwl_hcmd_arr iwl_mvm_groups[] = { 481 [LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names), 482 [LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names), 483 [SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names), 484 [MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names), 485 [PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names), 486 [DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names), 487 [PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names), 488 [REGULATORY_AND_NVM_GROUP] = 489 HCMD_ARR(iwl_mvm_regulatory_and_nvm_names), 490 }; 491 492 /* this forward declaration can avoid to export the function */ 493 static void iwl_mvm_async_handlers_wk(struct work_struct *wk); 494 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk); 495 496 static u32 calc_min_backoff(struct iwl_trans *trans, const struct iwl_cfg *cfg) 497 { 498 const struct iwl_pwr_tx_backoff *pwr_tx_backoff = cfg->pwr_tx_backoffs; 499 500 if (!pwr_tx_backoff) 501 return 0; 502 503 while (pwr_tx_backoff->pwr) { 504 if (trans->dflt_pwr_limit >= pwr_tx_backoff->pwr) 505 return pwr_tx_backoff->backoff; 506 507 pwr_tx_backoff++; 508 } 509 510 return 0; 511 } 512 513 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work); 514 515 static void iwl_mvm_tx_unblock_dwork(struct work_struct *work) 516 { 517 struct iwl_mvm *mvm = 518 container_of(work, struct iwl_mvm, cs_tx_unblock_dwork.work); 519 struct ieee80211_vif *tx_blocked_vif; 520 struct iwl_mvm_vif *mvmvif; 521 522 mutex_lock(&mvm->mutex); 523 524 tx_blocked_vif = 525 rcu_dereference_protected(mvm->csa_tx_blocked_vif, 526 lockdep_is_held(&mvm->mutex)); 527 528 if (!tx_blocked_vif) 529 goto unlock; 530 531 mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif); 532 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false); 533 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); 534 unlock: 535 mutex_unlock(&mvm->mutex); 536 } 537 538 static struct iwl_op_mode * 539 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg, 540 const struct iwl_fw *fw, struct dentry *dbgfs_dir) 541 { 542 struct ieee80211_hw *hw; 543 struct iwl_op_mode *op_mode; 544 struct iwl_mvm *mvm; 545 struct iwl_trans_config trans_cfg = {}; 546 static const u8 no_reclaim_cmds[] = { 547 TX_CMD, 548 }; 549 int err, scan_size; 550 u32 min_backoff; 551 552 /* 553 * We use IWL_MVM_STATION_COUNT to check the validity of the station 554 * index all over the driver - check that its value corresponds to the 555 * array size. 556 */ 557 BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT); 558 559 /******************************** 560 * 1. Allocating and configuring HW data 561 ********************************/ 562 hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) + 563 sizeof(struct iwl_mvm), 564 &iwl_mvm_hw_ops); 565 if (!hw) 566 return NULL; 567 568 if (cfg->max_rx_agg_size) 569 hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size; 570 571 if (cfg->max_tx_agg_size) 572 hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size; 573 574 op_mode = hw->priv; 575 576 mvm = IWL_OP_MODE_GET_MVM(op_mode); 577 mvm->dev = trans->dev; 578 mvm->trans = trans; 579 mvm->cfg = cfg; 580 mvm->fw = fw; 581 mvm->hw = hw; 582 583 mvm->init_status = 0; 584 585 if (iwl_mvm_has_new_rx_api(mvm)) { 586 op_mode->ops = &iwl_mvm_ops_mq; 587 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_desc); 588 } else { 589 op_mode->ops = &iwl_mvm_ops; 590 trans->rx_mpdu_cmd_hdr_size = 591 sizeof(struct iwl_rx_mpdu_res_start); 592 593 if (WARN_ON(trans->num_rx_queues > 1)) 594 goto out_free; 595 } 596 597 mvm->fw_restart = iwlwifi_mod_params.fw_restart ? -1 : 0; 598 599 if (!iwl_mvm_is_dqa_supported(mvm)) { 600 mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1; 601 602 if (mvm->cfg->base_params->num_of_queues == 16) { 603 mvm->aux_queue = 11; 604 mvm->first_agg_queue = 12; 605 BUILD_BUG_ON(BITS_PER_BYTE * 606 sizeof(mvm->hw_queue_to_mac80211[0]) < 12); 607 } else { 608 mvm->aux_queue = 15; 609 mvm->first_agg_queue = 16; 610 BUILD_BUG_ON(BITS_PER_BYTE * 611 sizeof(mvm->hw_queue_to_mac80211[0]) < 16); 612 } 613 } else { 614 mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE; 615 mvm->probe_queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE; 616 mvm->p2p_dev_queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE; 617 mvm->first_agg_queue = IWL_MVM_DQA_MIN_DATA_QUEUE; 618 mvm->last_agg_queue = IWL_MVM_DQA_MAX_DATA_QUEUE; 619 } 620 mvm->sf_state = SF_UNINIT; 621 if (iwl_mvm_has_new_tx_api(mvm)) 622 mvm->cur_ucode = IWL_UCODE_REGULAR; 623 else 624 mvm->cur_ucode = IWL_UCODE_INIT; 625 mvm->drop_bcn_ap_mode = true; 626 627 mutex_init(&mvm->mutex); 628 mutex_init(&mvm->d0i3_suspend_mutex); 629 spin_lock_init(&mvm->async_handlers_lock); 630 INIT_LIST_HEAD(&mvm->time_event_list); 631 INIT_LIST_HEAD(&mvm->aux_roc_te_list); 632 INIT_LIST_HEAD(&mvm->async_handlers_list); 633 spin_lock_init(&mvm->time_event_lock); 634 spin_lock_init(&mvm->queue_info_lock); 635 636 INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk); 637 INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk); 638 INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk); 639 INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work); 640 INIT_DELAYED_WORK(&mvm->fw_dump_wk, iwl_mvm_fw_error_dump_wk); 641 INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work); 642 INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk); 643 INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk); 644 645 spin_lock_init(&mvm->d0i3_tx_lock); 646 spin_lock_init(&mvm->refs_lock); 647 skb_queue_head_init(&mvm->d0i3_tx); 648 init_waitqueue_head(&mvm->d0i3_exit_waitq); 649 init_waitqueue_head(&mvm->rx_sync_waitq); 650 651 atomic_set(&mvm->queue_sync_counter, 0); 652 653 SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev); 654 655 INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork); 656 657 /* 658 * Populate the state variables that the transport layer needs 659 * to know about. 660 */ 661 trans_cfg.op_mode = op_mode; 662 trans_cfg.no_reclaim_cmds = no_reclaim_cmds; 663 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds); 664 switch (iwlwifi_mod_params.amsdu_size) { 665 case IWL_AMSDU_DEF: 666 case IWL_AMSDU_4K: 667 trans_cfg.rx_buf_size = IWL_AMSDU_4K; 668 break; 669 case IWL_AMSDU_8K: 670 trans_cfg.rx_buf_size = IWL_AMSDU_8K; 671 break; 672 case IWL_AMSDU_12K: 673 trans_cfg.rx_buf_size = IWL_AMSDU_12K; 674 break; 675 default: 676 pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME, 677 iwlwifi_mod_params.amsdu_size); 678 trans_cfg.rx_buf_size = IWL_AMSDU_4K; 679 } 680 681 /* the hardware splits the A-MSDU */ 682 if (mvm->cfg->mq_rx_supported) 683 trans_cfg.rx_buf_size = IWL_AMSDU_4K; 684 685 trans->wide_cmd_header = true; 686 trans_cfg.bc_table_dword = true; 687 688 trans_cfg.command_groups = iwl_mvm_groups; 689 trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups); 690 691 if (iwl_mvm_is_dqa_supported(mvm)) 692 trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE; 693 else 694 trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE; 695 trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD; 696 trans_cfg.scd_set_active = true; 697 698 trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info, 699 driver_data[2]); 700 701 trans_cfg.sdio_adma_addr = fw->sdio_adma_addr; 702 trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD; 703 704 /* Set a short watchdog for the command queue */ 705 trans_cfg.cmd_q_wdg_timeout = 706 iwl_mvm_get_wd_timeout(mvm, NULL, false, true); 707 708 snprintf(mvm->hw->wiphy->fw_version, 709 sizeof(mvm->hw->wiphy->fw_version), 710 "%s", fw->fw_version); 711 712 /* Configure transport layer */ 713 iwl_trans_configure(mvm->trans, &trans_cfg); 714 715 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD; 716 trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv; 717 trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num; 718 memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv, 719 sizeof(trans->dbg_conf_tlv)); 720 trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv; 721 722 /* set up notification wait support */ 723 iwl_notification_wait_init(&mvm->notif_wait); 724 725 /* Init phy db */ 726 mvm->phy_db = iwl_phy_db_init(trans); 727 if (!mvm->phy_db) { 728 IWL_ERR(mvm, "Cannot init phy_db\n"); 729 goto out_free; 730 } 731 732 IWL_INFO(mvm, "Detected %s, REV=0x%X\n", 733 mvm->cfg->name, mvm->trans->hw_rev); 734 735 if (iwlwifi_mod_params.nvm_file) 736 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file; 737 else 738 IWL_DEBUG_EEPROM(mvm->trans->dev, 739 "working without external nvm file\n"); 740 741 err = iwl_trans_start_hw(mvm->trans); 742 if (err) 743 goto out_free; 744 745 mutex_lock(&mvm->mutex); 746 iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE); 747 err = iwl_run_init_mvm_ucode(mvm, true); 748 if (!iwlmvm_mod_params.init_dbg) 749 iwl_mvm_stop_device(mvm); 750 iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE); 751 mutex_unlock(&mvm->mutex); 752 /* returns 0 if successful, 1 if success but in rfkill */ 753 if (err < 0) { 754 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err); 755 goto out_free; 756 } 757 758 scan_size = iwl_mvm_scan_size(mvm); 759 760 mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL); 761 if (!mvm->scan_cmd) 762 goto out_free; 763 764 /* Set EBS as successful as long as not stated otherwise by the FW. */ 765 mvm->last_ebs_successful = true; 766 767 err = iwl_mvm_mac_setup_register(mvm); 768 if (err) 769 goto out_free; 770 mvm->hw_registered = true; 771 772 min_backoff = calc_min_backoff(trans, cfg); 773 iwl_mvm_thermal_initialize(mvm, min_backoff); 774 775 err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir); 776 if (err) 777 goto out_unregister; 778 779 if (!iwl_mvm_has_new_rx_stats_api(mvm)) 780 memset(&mvm->rx_stats_v3, 0, 781 sizeof(struct mvm_statistics_rx_v3)); 782 else 783 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx)); 784 785 /* The transport always starts with a taken reference, we can 786 * release it now if d0i3 is supported */ 787 if (iwl_mvm_is_d0i3_supported(mvm)) 788 iwl_trans_unref(mvm->trans); 789 790 iwl_mvm_tof_init(mvm); 791 792 return op_mode; 793 794 out_unregister: 795 if (iwlmvm_mod_params.init_dbg) 796 return op_mode; 797 798 ieee80211_unregister_hw(mvm->hw); 799 mvm->hw_registered = false; 800 iwl_mvm_leds_exit(mvm); 801 iwl_mvm_thermal_exit(mvm); 802 out_free: 803 flush_delayed_work(&mvm->fw_dump_wk); 804 805 if (iwlmvm_mod_params.init_dbg) 806 return op_mode; 807 iwl_phy_db_free(mvm->phy_db); 808 kfree(mvm->scan_cmd); 809 iwl_trans_op_mode_leave(trans); 810 811 ieee80211_free_hw(mvm->hw); 812 return NULL; 813 } 814 815 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode) 816 { 817 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 818 int i; 819 820 /* If d0i3 is supported, we have released the reference that 821 * the transport started with, so we should take it back now 822 * that we are leaving. 823 */ 824 if (iwl_mvm_is_d0i3_supported(mvm)) 825 iwl_trans_ref(mvm->trans); 826 827 iwl_mvm_leds_exit(mvm); 828 829 iwl_mvm_thermal_exit(mvm); 830 831 if (mvm->init_status & IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE) { 832 ieee80211_unregister_hw(mvm->hw); 833 mvm->init_status &= ~IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE; 834 } 835 836 kfree(mvm->scan_cmd); 837 kfree(mvm->mcast_filter_cmd); 838 mvm->mcast_filter_cmd = NULL; 839 840 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS) 841 kfree(mvm->d3_resume_sram); 842 #endif 843 844 iwl_trans_op_mode_leave(mvm->trans); 845 846 iwl_phy_db_free(mvm->phy_db); 847 mvm->phy_db = NULL; 848 849 kfree(mvm->nvm_data); 850 for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++) 851 kfree(mvm->nvm_sections[i].data); 852 853 iwl_mvm_tof_clean(mvm); 854 855 mutex_destroy(&mvm->mutex); 856 mutex_destroy(&mvm->d0i3_suspend_mutex); 857 858 ieee80211_free_hw(mvm->hw); 859 } 860 861 struct iwl_async_handler_entry { 862 struct list_head list; 863 struct iwl_rx_cmd_buffer rxb; 864 enum iwl_rx_handler_context context; 865 void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb); 866 }; 867 868 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm) 869 { 870 struct iwl_async_handler_entry *entry, *tmp; 871 872 spin_lock_bh(&mvm->async_handlers_lock); 873 list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) { 874 iwl_free_rxb(&entry->rxb); 875 list_del(&entry->list); 876 kfree(entry); 877 } 878 spin_unlock_bh(&mvm->async_handlers_lock); 879 } 880 881 static void iwl_mvm_async_handlers_wk(struct work_struct *wk) 882 { 883 struct iwl_mvm *mvm = 884 container_of(wk, struct iwl_mvm, async_handlers_wk); 885 struct iwl_async_handler_entry *entry, *tmp; 886 LIST_HEAD(local_list); 887 888 /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */ 889 890 /* 891 * Sync with Rx path with a lock. Remove all the entries from this list, 892 * add them to a local one (lock free), and then handle them. 893 */ 894 spin_lock_bh(&mvm->async_handlers_lock); 895 list_splice_init(&mvm->async_handlers_list, &local_list); 896 spin_unlock_bh(&mvm->async_handlers_lock); 897 898 list_for_each_entry_safe(entry, tmp, &local_list, list) { 899 if (entry->context == RX_HANDLER_ASYNC_LOCKED) 900 mutex_lock(&mvm->mutex); 901 entry->fn(mvm, &entry->rxb); 902 iwl_free_rxb(&entry->rxb); 903 list_del(&entry->list); 904 if (entry->context == RX_HANDLER_ASYNC_LOCKED) 905 mutex_unlock(&mvm->mutex); 906 kfree(entry); 907 } 908 } 909 910 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm, 911 struct iwl_rx_packet *pkt) 912 { 913 struct iwl_fw_dbg_trigger_tlv *trig; 914 struct iwl_fw_dbg_trigger_cmd *cmds_trig; 915 int i; 916 917 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF)) 918 return; 919 920 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF); 921 cmds_trig = (void *)trig->data; 922 923 if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig)) 924 return; 925 926 for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) { 927 /* don't collect on CMD 0 */ 928 if (!cmds_trig->cmds[i].cmd_id) 929 break; 930 931 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd || 932 cmds_trig->cmds[i].group_id != pkt->hdr.group_id) 933 continue; 934 935 iwl_mvm_fw_dbg_collect_trig(mvm, trig, 936 "CMD 0x%02x.%02x received", 937 pkt->hdr.group_id, pkt->hdr.cmd); 938 break; 939 } 940 } 941 942 static void iwl_mvm_rx_common(struct iwl_mvm *mvm, 943 struct iwl_rx_cmd_buffer *rxb, 944 struct iwl_rx_packet *pkt) 945 { 946 int i; 947 948 iwl_mvm_rx_check_trigger(mvm, pkt); 949 950 /* 951 * Do the notification wait before RX handlers so 952 * even if the RX handler consumes the RXB we have 953 * access to it in the notification wait entry. 954 */ 955 iwl_notification_wait_notify(&mvm->notif_wait, pkt); 956 957 for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) { 958 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i]; 959 struct iwl_async_handler_entry *entry; 960 961 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) 962 continue; 963 964 if (rx_h->context == RX_HANDLER_SYNC) { 965 rx_h->fn(mvm, rxb); 966 return; 967 } 968 969 entry = kzalloc(sizeof(*entry), GFP_ATOMIC); 970 /* we can't do much... */ 971 if (!entry) 972 return; 973 974 entry->rxb._page = rxb_steal_page(rxb); 975 entry->rxb._offset = rxb->_offset; 976 entry->rxb._rx_page_order = rxb->_rx_page_order; 977 entry->fn = rx_h->fn; 978 entry->context = rx_h->context; 979 spin_lock(&mvm->async_handlers_lock); 980 list_add_tail(&entry->list, &mvm->async_handlers_list); 981 spin_unlock(&mvm->async_handlers_lock); 982 schedule_work(&mvm->async_handlers_wk); 983 break; 984 } 985 } 986 987 static void iwl_mvm_rx(struct iwl_op_mode *op_mode, 988 struct napi_struct *napi, 989 struct iwl_rx_cmd_buffer *rxb) 990 { 991 struct iwl_rx_packet *pkt = rxb_addr(rxb); 992 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 993 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); 994 995 if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))) 996 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb); 997 else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD)) 998 iwl_mvm_rx_rx_phy_cmd(mvm, rxb); 999 else 1000 iwl_mvm_rx_common(mvm, rxb, pkt); 1001 } 1002 1003 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode, 1004 struct napi_struct *napi, 1005 struct iwl_rx_cmd_buffer *rxb) 1006 { 1007 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1008 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1009 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); 1010 1011 if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))) 1012 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0); 1013 else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP, 1014 RX_QUEUES_NOTIFICATION))) 1015 iwl_mvm_rx_queue_notif(mvm, rxb, 0); 1016 else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)) 1017 iwl_mvm_rx_frame_release(mvm, napi, rxb, 0); 1018 else 1019 iwl_mvm_rx_common(mvm, rxb, pkt); 1020 } 1021 1022 void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq) 1023 { 1024 int q; 1025 1026 if (WARN_ON_ONCE(!mq)) 1027 return; 1028 1029 for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) { 1030 if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) { 1031 IWL_DEBUG_TX_QUEUES(mvm, 1032 "mac80211 %d already stopped\n", q); 1033 continue; 1034 } 1035 1036 ieee80211_stop_queue(mvm->hw, q); 1037 } 1038 } 1039 1040 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode, 1041 const struct iwl_device_cmd *cmd) 1042 { 1043 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1044 1045 /* 1046 * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA 1047 * commands that need to block the Tx queues. 1048 */ 1049 iwl_trans_block_txq_ptrs(mvm->trans, false); 1050 } 1051 1052 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue) 1053 { 1054 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1055 unsigned long mq; 1056 1057 spin_lock_bh(&mvm->queue_info_lock); 1058 mq = mvm->hw_queue_to_mac80211[hw_queue]; 1059 spin_unlock_bh(&mvm->queue_info_lock); 1060 1061 iwl_mvm_stop_mac_queues(mvm, mq); 1062 } 1063 1064 void iwl_mvm_start_mac_queues(struct iwl_mvm *mvm, unsigned long mq) 1065 { 1066 int q; 1067 1068 if (WARN_ON_ONCE(!mq)) 1069 return; 1070 1071 for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) { 1072 if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) { 1073 IWL_DEBUG_TX_QUEUES(mvm, 1074 "mac80211 %d still stopped\n", q); 1075 continue; 1076 } 1077 1078 ieee80211_wake_queue(mvm->hw, q); 1079 } 1080 } 1081 1082 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue) 1083 { 1084 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1085 unsigned long mq; 1086 1087 spin_lock_bh(&mvm->queue_info_lock); 1088 mq = mvm->hw_queue_to_mac80211[hw_queue]; 1089 spin_unlock_bh(&mvm->queue_info_lock); 1090 1091 iwl_mvm_start_mac_queues(mvm, mq); 1092 } 1093 1094 static void iwl_mvm_set_rfkill_state(struct iwl_mvm *mvm) 1095 { 1096 bool state = iwl_mvm_is_radio_killed(mvm); 1097 1098 if (state) 1099 wake_up(&mvm->rx_sync_waitq); 1100 1101 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, state); 1102 } 1103 1104 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state) 1105 { 1106 if (state) 1107 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); 1108 else 1109 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); 1110 1111 iwl_mvm_set_rfkill_state(mvm); 1112 } 1113 1114 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state) 1115 { 1116 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1117 bool calibrating = ACCESS_ONCE(mvm->calibrating); 1118 1119 if (state) 1120 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); 1121 else 1122 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); 1123 1124 iwl_mvm_set_rfkill_state(mvm); 1125 1126 /* iwl_run_init_mvm_ucode is waiting for results, abort it */ 1127 if (calibrating) 1128 iwl_abort_notification_waits(&mvm->notif_wait); 1129 1130 /* 1131 * Stop the device if we run OPERATIONAL firmware or if we are in the 1132 * middle of the calibrations. 1133 */ 1134 return state && (mvm->cur_ucode != IWL_UCODE_INIT || calibrating); 1135 } 1136 1137 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb) 1138 { 1139 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1140 struct ieee80211_tx_info *info; 1141 1142 info = IEEE80211_SKB_CB(skb); 1143 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]); 1144 ieee80211_free_txskb(mvm->hw, skb); 1145 } 1146 1147 struct iwl_mvm_reprobe { 1148 struct device *dev; 1149 struct work_struct work; 1150 }; 1151 1152 static void iwl_mvm_reprobe_wk(struct work_struct *wk) 1153 { 1154 struct iwl_mvm_reprobe *reprobe; 1155 1156 reprobe = container_of(wk, struct iwl_mvm_reprobe, work); 1157 if (device_reprobe(reprobe->dev)) 1158 dev_err(reprobe->dev, "reprobe failed!\n"); 1159 kfree(reprobe); 1160 module_put(THIS_MODULE); 1161 } 1162 1163 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work) 1164 { 1165 struct iwl_mvm *mvm = 1166 container_of(work, struct iwl_mvm, fw_dump_wk.work); 1167 1168 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT)) 1169 return; 1170 1171 mutex_lock(&mvm->mutex); 1172 1173 if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000) { 1174 /* stop recording */ 1175 iwl_set_bits_prph(mvm->trans, MON_BUFF_SAMPLE_CTL, 0x100); 1176 1177 iwl_mvm_fw_error_dump(mvm); 1178 1179 /* start recording again if the firmware is not crashed */ 1180 if (!test_bit(STATUS_FW_ERROR, &mvm->trans->status) && 1181 mvm->fw->dbg_dest_tlv) { 1182 iwl_clear_bits_prph(mvm->trans, 1183 MON_BUFF_SAMPLE_CTL, 0x100); 1184 iwl_clear_bits_prph(mvm->trans, 1185 MON_BUFF_SAMPLE_CTL, 0x1); 1186 iwl_set_bits_prph(mvm->trans, MON_BUFF_SAMPLE_CTL, 0x1); 1187 } 1188 } else { 1189 u32 in_sample = iwl_read_prph(mvm->trans, DBGC_IN_SAMPLE); 1190 u32 out_ctrl = iwl_read_prph(mvm->trans, DBGC_OUT_CTRL); 1191 1192 /* stop recording */ 1193 iwl_write_prph(mvm->trans, DBGC_IN_SAMPLE, 0); 1194 udelay(100); 1195 iwl_write_prph(mvm->trans, DBGC_OUT_CTRL, 0); 1196 /* wait before we collect the data till the DBGC stop */ 1197 udelay(500); 1198 1199 iwl_mvm_fw_error_dump(mvm); 1200 1201 /* start recording again if the firmware is not crashed */ 1202 if (!test_bit(STATUS_FW_ERROR, &mvm->trans->status) && 1203 mvm->fw->dbg_dest_tlv) { 1204 iwl_write_prph(mvm->trans, DBGC_IN_SAMPLE, in_sample); 1205 iwl_write_prph(mvm->trans, DBGC_OUT_CTRL, out_ctrl); 1206 } 1207 } 1208 1209 mutex_unlock(&mvm->mutex); 1210 1211 iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT); 1212 } 1213 1214 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error) 1215 { 1216 iwl_abort_notification_waits(&mvm->notif_wait); 1217 1218 /* 1219 * This is a bit racy, but worst case we tell mac80211 about 1220 * a stopped/aborted scan when that was already done which 1221 * is not a problem. It is necessary to abort any os scan 1222 * here because mac80211 requires having the scan cleared 1223 * before restarting. 1224 * We'll reset the scan_status to NONE in restart cleanup in 1225 * the next start() call from mac80211. If restart isn't called 1226 * (no fw restart) scan status will stay busy. 1227 */ 1228 iwl_mvm_report_scan_aborted(mvm); 1229 1230 /* 1231 * If we're restarting already, don't cycle restarts. 1232 * If INIT fw asserted, it will likely fail again. 1233 * If WoWLAN fw asserted, don't restart either, mac80211 1234 * can't recover this since we're already half suspended. 1235 */ 1236 if (!mvm->fw_restart && fw_error) { 1237 iwl_mvm_fw_dbg_collect_desc(mvm, &iwl_mvm_dump_desc_assert, 1238 NULL); 1239 } else if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1240 struct iwl_mvm_reprobe *reprobe; 1241 1242 IWL_ERR(mvm, 1243 "Firmware error during reconfiguration - reprobe!\n"); 1244 1245 /* 1246 * get a module reference to avoid doing this while unloading 1247 * anyway and to avoid scheduling a work with code that's 1248 * being removed. 1249 */ 1250 if (!try_module_get(THIS_MODULE)) { 1251 IWL_ERR(mvm, "Module is being unloaded - abort\n"); 1252 return; 1253 } 1254 1255 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC); 1256 if (!reprobe) { 1257 module_put(THIS_MODULE); 1258 return; 1259 } 1260 reprobe->dev = mvm->trans->dev; 1261 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk); 1262 schedule_work(&reprobe->work); 1263 } else if (mvm->cur_ucode == IWL_UCODE_REGULAR && 1264 mvm->hw_registered) { 1265 /* don't let the transport/FW power down */ 1266 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); 1267 1268 if (fw_error && mvm->fw_restart > 0) 1269 mvm->fw_restart--; 1270 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); 1271 ieee80211_restart_hw(mvm->hw); 1272 } 1273 } 1274 1275 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode) 1276 { 1277 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1278 1279 iwl_mvm_dump_nic_error_log(mvm); 1280 1281 iwl_mvm_nic_restart(mvm, true); 1282 } 1283 1284 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode) 1285 { 1286 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1287 1288 WARN_ON(1); 1289 iwl_mvm_nic_restart(mvm, true); 1290 } 1291 1292 struct iwl_d0i3_iter_data { 1293 struct iwl_mvm *mvm; 1294 struct ieee80211_vif *connected_vif; 1295 u8 ap_sta_id; 1296 u8 vif_count; 1297 u8 offloading_tid; 1298 bool disable_offloading; 1299 }; 1300 1301 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm, 1302 struct ieee80211_vif *vif, 1303 struct iwl_d0i3_iter_data *iter_data) 1304 { 1305 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1306 struct iwl_mvm_sta *mvmsta; 1307 u32 available_tids = 0; 1308 u8 tid; 1309 1310 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION || 1311 mvmvif->ap_sta_id == IWL_MVM_INVALID_STA)) 1312 return false; 1313 1314 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); 1315 if (!mvmsta) 1316 return false; 1317 1318 spin_lock_bh(&mvmsta->lock); 1319 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1320 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 1321 1322 /* 1323 * in case of pending tx packets, don't use this tid 1324 * for offloading in order to prevent reuse of the same 1325 * qos seq counters. 1326 */ 1327 if (iwl_mvm_tid_queued(mvm, tid_data)) 1328 continue; 1329 1330 if (tid_data->state != IWL_AGG_OFF) 1331 continue; 1332 1333 available_tids |= BIT(tid); 1334 } 1335 spin_unlock_bh(&mvmsta->lock); 1336 1337 /* 1338 * disallow protocol offloading if we have no available tid 1339 * (with no pending frames and no active aggregation, 1340 * as we don't handle "holes" properly - the scheduler needs the 1341 * frame's seq number and TFD index to match) 1342 */ 1343 if (!available_tids) 1344 return true; 1345 1346 /* for simplicity, just use the first available tid */ 1347 iter_data->offloading_tid = ffs(available_tids) - 1; 1348 return false; 1349 } 1350 1351 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac, 1352 struct ieee80211_vif *vif) 1353 { 1354 struct iwl_d0i3_iter_data *data = _data; 1355 struct iwl_mvm *mvm = data->mvm; 1356 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1357 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; 1358 1359 IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr); 1360 if (vif->type != NL80211_IFTYPE_STATION || 1361 !vif->bss_conf.assoc) 1362 return; 1363 1364 /* 1365 * in case of pending tx packets or active aggregations, 1366 * avoid offloading features in order to prevent reuse of 1367 * the same qos seq counters. 1368 */ 1369 if (iwl_mvm_disallow_offloading(mvm, vif, data)) 1370 data->disable_offloading = true; 1371 1372 iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags); 1373 iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading, 1374 false, flags); 1375 1376 /* 1377 * on init/association, mvm already configures POWER_TABLE_CMD 1378 * and REPLY_MCAST_FILTER_CMD, so currently don't 1379 * reconfigure them (we might want to use different 1380 * params later on, though). 1381 */ 1382 data->ap_sta_id = mvmvif->ap_sta_id; 1383 data->vif_count++; 1384 1385 /* 1386 * no new commands can be sent at this stage, so it's safe 1387 * to save the vif pointer during d0i3 entrance. 1388 */ 1389 data->connected_vif = vif; 1390 } 1391 1392 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm, 1393 struct iwl_wowlan_config_cmd *cmd, 1394 struct iwl_d0i3_iter_data *iter_data) 1395 { 1396 struct ieee80211_sta *ap_sta; 1397 struct iwl_mvm_sta *mvm_ap_sta; 1398 1399 if (iter_data->ap_sta_id == IWL_MVM_INVALID_STA) 1400 return; 1401 1402 rcu_read_lock(); 1403 1404 ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]); 1405 if (IS_ERR_OR_NULL(ap_sta)) 1406 goto out; 1407 1408 mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta); 1409 cmd->is_11n_connection = ap_sta->ht_cap.ht_supported; 1410 cmd->offloading_tid = iter_data->offloading_tid; 1411 cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING | 1412 ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON; 1413 /* 1414 * The d0i3 uCode takes care of the nonqos counters, 1415 * so configure only the qos seq ones. 1416 */ 1417 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd); 1418 out: 1419 rcu_read_unlock(); 1420 } 1421 1422 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode) 1423 { 1424 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1425 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; 1426 int ret; 1427 struct iwl_d0i3_iter_data d0i3_iter_data = { 1428 .mvm = mvm, 1429 }; 1430 struct iwl_wowlan_config_cmd wowlan_config_cmd = { 1431 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME | 1432 IWL_WOWLAN_WAKEUP_BEACON_MISS | 1433 IWL_WOWLAN_WAKEUP_LINK_CHANGE), 1434 }; 1435 struct iwl_d3_manager_config d3_cfg_cmd = { 1436 .min_sleep_time = cpu_to_le32(1000), 1437 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR), 1438 }; 1439 1440 IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n"); 1441 1442 if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR)) 1443 return -EINVAL; 1444 1445 set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1446 1447 /* 1448 * iwl_mvm_ref_sync takes a reference before checking the flag. 1449 * so by checking there is no held reference we prevent a state 1450 * in which iwl_mvm_ref_sync continues successfully while we 1451 * configure the firmware to enter d0i3 1452 */ 1453 if (iwl_mvm_ref_taken(mvm)) { 1454 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n"); 1455 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1456 wake_up(&mvm->d0i3_exit_waitq); 1457 return 1; 1458 } 1459 1460 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1461 IEEE80211_IFACE_ITER_NORMAL, 1462 iwl_mvm_enter_d0i3_iterator, 1463 &d0i3_iter_data); 1464 if (d0i3_iter_data.vif_count == 1) { 1465 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id; 1466 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading; 1467 } else { 1468 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1); 1469 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA; 1470 mvm->d0i3_offloading = false; 1471 } 1472 1473 /* make sure we have no running tx while configuring the seqno */ 1474 synchronize_net(); 1475 1476 /* Flush the hw queues, in case something got queued during entry */ 1477 /* TODO new tx api */ 1478 if (iwl_mvm_has_new_tx_api(mvm)) { 1479 WARN_ONCE(1, "d0i3: Need to implement flush TX queue\n"); 1480 } else { 1481 ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm), 1482 flags); 1483 if (ret) 1484 return ret; 1485 } 1486 1487 /* configure wowlan configuration only if needed */ 1488 if (mvm->d0i3_ap_sta_id != IWL_MVM_INVALID_STA) { 1489 /* wake on beacons only if beacon storing isn't supported */ 1490 if (!fw_has_capa(&mvm->fw->ucode_capa, 1491 IWL_UCODE_TLV_CAPA_BEACON_STORING)) 1492 wowlan_config_cmd.wakeup_filter |= 1493 cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING); 1494 1495 iwl_mvm_wowlan_config_key_params(mvm, 1496 d0i3_iter_data.connected_vif, 1497 true, flags); 1498 1499 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd, 1500 &d0i3_iter_data); 1501 1502 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags, 1503 sizeof(wowlan_config_cmd), 1504 &wowlan_config_cmd); 1505 if (ret) 1506 return ret; 1507 } 1508 1509 return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD, 1510 flags | CMD_MAKE_TRANS_IDLE, 1511 sizeof(d3_cfg_cmd), &d3_cfg_cmd); 1512 } 1513 1514 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac, 1515 struct ieee80211_vif *vif) 1516 { 1517 struct iwl_mvm *mvm = _data; 1518 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO; 1519 1520 IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr); 1521 if (vif->type != NL80211_IFTYPE_STATION || 1522 !vif->bss_conf.assoc) 1523 return; 1524 1525 iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags); 1526 } 1527 1528 struct iwl_mvm_d0i3_exit_work_iter_data { 1529 struct iwl_mvm *mvm; 1530 struct iwl_wowlan_status *status; 1531 u32 wakeup_reasons; 1532 }; 1533 1534 static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac, 1535 struct ieee80211_vif *vif) 1536 { 1537 struct iwl_mvm_d0i3_exit_work_iter_data *data = _data; 1538 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1539 u32 reasons = data->wakeup_reasons; 1540 1541 /* consider only the relevant station interface */ 1542 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc || 1543 data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id) 1544 return; 1545 1546 if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH) 1547 iwl_mvm_connection_loss(data->mvm, vif, "D0i3"); 1548 else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON) 1549 ieee80211_beacon_loss(vif); 1550 else 1551 iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status); 1552 } 1553 1554 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq) 1555 { 1556 struct ieee80211_sta *sta = NULL; 1557 struct iwl_mvm_sta *mvm_ap_sta; 1558 int i; 1559 bool wake_queues = false; 1560 1561 lockdep_assert_held(&mvm->mutex); 1562 1563 spin_lock_bh(&mvm->d0i3_tx_lock); 1564 1565 if (mvm->d0i3_ap_sta_id == IWL_MVM_INVALID_STA) 1566 goto out; 1567 1568 IWL_DEBUG_RPM(mvm, "re-enqueue packets\n"); 1569 1570 /* get the sta in order to update seq numbers and re-enqueue skbs */ 1571 sta = rcu_dereference_protected( 1572 mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id], 1573 lockdep_is_held(&mvm->mutex)); 1574 1575 if (IS_ERR_OR_NULL(sta)) { 1576 sta = NULL; 1577 goto out; 1578 } 1579 1580 if (mvm->d0i3_offloading && qos_seq) { 1581 /* update qos seq numbers if offloading was enabled */ 1582 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta); 1583 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1584 u16 seq = le16_to_cpu(qos_seq[i]); 1585 /* firmware stores last-used one, we store next one */ 1586 seq += 0x10; 1587 mvm_ap_sta->tid_data[i].seq_number = seq; 1588 } 1589 } 1590 out: 1591 /* re-enqueue (or drop) all packets */ 1592 while (!skb_queue_empty(&mvm->d0i3_tx)) { 1593 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx); 1594 1595 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta)) 1596 ieee80211_free_txskb(mvm->hw, skb); 1597 1598 /* if the skb_queue is not empty, we need to wake queues */ 1599 wake_queues = true; 1600 } 1601 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1602 wake_up(&mvm->d0i3_exit_waitq); 1603 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA; 1604 if (wake_queues) 1605 ieee80211_wake_queues(mvm->hw); 1606 1607 spin_unlock_bh(&mvm->d0i3_tx_lock); 1608 } 1609 1610 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk) 1611 { 1612 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work); 1613 struct iwl_host_cmd get_status_cmd = { 1614 .id = WOWLAN_GET_STATUSES, 1615 .flags = CMD_HIGH_PRIO | CMD_WANT_SKB, 1616 }; 1617 struct iwl_mvm_d0i3_exit_work_iter_data iter_data = { 1618 .mvm = mvm, 1619 }; 1620 1621 struct iwl_wowlan_status *status; 1622 int ret; 1623 u32 wakeup_reasons = 0; 1624 __le16 *qos_seq = NULL; 1625 1626 mutex_lock(&mvm->mutex); 1627 ret = iwl_mvm_send_cmd(mvm, &get_status_cmd); 1628 if (ret) 1629 goto out; 1630 1631 status = (void *)get_status_cmd.resp_pkt->data; 1632 wakeup_reasons = le32_to_cpu(status->wakeup_reasons); 1633 qos_seq = status->qos_seq_ctr; 1634 1635 IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons); 1636 1637 iter_data.wakeup_reasons = wakeup_reasons; 1638 iter_data.status = status; 1639 ieee80211_iterate_active_interfaces(mvm->hw, 1640 IEEE80211_IFACE_ITER_NORMAL, 1641 iwl_mvm_d0i3_exit_work_iter, 1642 &iter_data); 1643 out: 1644 iwl_mvm_d0i3_enable_tx(mvm, qos_seq); 1645 1646 IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n", 1647 wakeup_reasons); 1648 1649 /* qos_seq might point inside resp_pkt, so free it only now */ 1650 if (get_status_cmd.resp_pkt) 1651 iwl_free_resp(&get_status_cmd); 1652 1653 /* the FW might have updated the regdomain */ 1654 iwl_mvm_update_changed_regdom(mvm); 1655 1656 iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK); 1657 mutex_unlock(&mvm->mutex); 1658 } 1659 1660 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm) 1661 { 1662 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE | 1663 CMD_WAKE_UP_TRANS; 1664 int ret; 1665 1666 IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n"); 1667 1668 if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR)) 1669 return -EINVAL; 1670 1671 mutex_lock(&mvm->d0i3_suspend_mutex); 1672 if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) { 1673 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n"); 1674 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags); 1675 mutex_unlock(&mvm->d0i3_suspend_mutex); 1676 return 0; 1677 } 1678 mutex_unlock(&mvm->d0i3_suspend_mutex); 1679 1680 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL); 1681 if (ret) 1682 goto out; 1683 1684 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1685 IEEE80211_IFACE_ITER_NORMAL, 1686 iwl_mvm_exit_d0i3_iterator, 1687 mvm); 1688 out: 1689 schedule_work(&mvm->d0i3_exit_work); 1690 return ret; 1691 } 1692 1693 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode) 1694 { 1695 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1696 1697 iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK); 1698 return _iwl_mvm_exit_d0i3(mvm); 1699 } 1700 1701 #define IWL_MVM_COMMON_OPS \ 1702 /* these could be differentiated */ \ 1703 .async_cb = iwl_mvm_async_cb, \ 1704 .queue_full = iwl_mvm_stop_sw_queue, \ 1705 .queue_not_full = iwl_mvm_wake_sw_queue, \ 1706 .hw_rf_kill = iwl_mvm_set_hw_rfkill_state, \ 1707 .free_skb = iwl_mvm_free_skb, \ 1708 .nic_error = iwl_mvm_nic_error, \ 1709 .cmd_queue_full = iwl_mvm_cmd_queue_full, \ 1710 .nic_config = iwl_mvm_nic_config, \ 1711 .enter_d0i3 = iwl_mvm_enter_d0i3, \ 1712 .exit_d0i3 = iwl_mvm_exit_d0i3, \ 1713 /* as we only register one, these MUST be common! */ \ 1714 .start = iwl_op_mode_mvm_start, \ 1715 .stop = iwl_op_mode_mvm_stop 1716 1717 static const struct iwl_op_mode_ops iwl_mvm_ops = { 1718 IWL_MVM_COMMON_OPS, 1719 .rx = iwl_mvm_rx, 1720 }; 1721 1722 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode, 1723 struct napi_struct *napi, 1724 struct iwl_rx_cmd_buffer *rxb, 1725 unsigned int queue) 1726 { 1727 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1728 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1729 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); 1730 1731 if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))) 1732 iwl_mvm_rx_frame_release(mvm, napi, rxb, queue); 1733 else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP, 1734 RX_QUEUES_NOTIFICATION))) 1735 iwl_mvm_rx_queue_notif(mvm, rxb, queue); 1736 else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))) 1737 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue); 1738 } 1739 1740 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = { 1741 IWL_MVM_COMMON_OPS, 1742 .rx = iwl_mvm_rx_mq, 1743 .rx_rss = iwl_mvm_rx_mq_rss, 1744 }; 1745