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(DEBUG_GROUP, MFU_ASSERT_DUMP_NTF, 306 iwl_mvm_mfu_assert_dump_notif, RX_HANDLER_SYNC), 307 RX_HANDLER_GRP(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF, 308 iwl_mvm_rx_stored_beacon_notif, RX_HANDLER_SYNC), 309 RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF, 310 iwl_mvm_mu_mimo_grp_notif, RX_HANDLER_SYNC), 311 RX_HANDLER_GRP(DATA_PATH_GROUP, STA_PM_NOTIF, 312 iwl_mvm_sta_pm_notif, RX_HANDLER_SYNC), 313 }; 314 #undef RX_HANDLER 315 #undef RX_HANDLER_GRP 316 317 /* Please keep this array *SORTED* by hex value. 318 * Access is done through binary search 319 */ 320 static const struct iwl_hcmd_names iwl_mvm_legacy_names[] = { 321 HCMD_NAME(MVM_ALIVE), 322 HCMD_NAME(REPLY_ERROR), 323 HCMD_NAME(ECHO_CMD), 324 HCMD_NAME(INIT_COMPLETE_NOTIF), 325 HCMD_NAME(PHY_CONTEXT_CMD), 326 HCMD_NAME(DBG_CFG), 327 HCMD_NAME(ANTENNA_COUPLING_NOTIFICATION), 328 HCMD_NAME(SCAN_CFG_CMD), 329 HCMD_NAME(SCAN_REQ_UMAC), 330 HCMD_NAME(SCAN_ABORT_UMAC), 331 HCMD_NAME(SCAN_COMPLETE_UMAC), 332 HCMD_NAME(TOF_CMD), 333 HCMD_NAME(TOF_NOTIFICATION), 334 HCMD_NAME(BA_WINDOW_STATUS_NOTIFICATION_ID), 335 HCMD_NAME(ADD_STA_KEY), 336 HCMD_NAME(ADD_STA), 337 HCMD_NAME(REMOVE_STA), 338 HCMD_NAME(FW_GET_ITEM_CMD), 339 HCMD_NAME(TX_CMD), 340 HCMD_NAME(SCD_QUEUE_CFG), 341 HCMD_NAME(TXPATH_FLUSH), 342 HCMD_NAME(MGMT_MCAST_KEY), 343 HCMD_NAME(WEP_KEY), 344 HCMD_NAME(SHARED_MEM_CFG), 345 HCMD_NAME(TDLS_CHANNEL_SWITCH_CMD), 346 HCMD_NAME(MAC_CONTEXT_CMD), 347 HCMD_NAME(TIME_EVENT_CMD), 348 HCMD_NAME(TIME_EVENT_NOTIFICATION), 349 HCMD_NAME(BINDING_CONTEXT_CMD), 350 HCMD_NAME(TIME_QUOTA_CMD), 351 HCMD_NAME(NON_QOS_TX_COUNTER_CMD), 352 HCMD_NAME(LQ_CMD), 353 HCMD_NAME(FW_PAGING_BLOCK_CMD), 354 HCMD_NAME(SCAN_OFFLOAD_REQUEST_CMD), 355 HCMD_NAME(SCAN_OFFLOAD_ABORT_CMD), 356 HCMD_NAME(HOT_SPOT_CMD), 357 HCMD_NAME(SCAN_OFFLOAD_PROFILES_QUERY_CMD), 358 HCMD_NAME(SCAN_OFFLOAD_HOTSPOTS_CONFIG_CMD), 359 HCMD_NAME(SCAN_OFFLOAD_HOTSPOTS_QUERY_CMD), 360 HCMD_NAME(BT_COEX_UPDATE_SW_BOOST), 361 HCMD_NAME(BT_COEX_UPDATE_CORUN_LUT), 362 HCMD_NAME(BT_COEX_UPDATE_REDUCED_TXP), 363 HCMD_NAME(BT_COEX_CI), 364 HCMD_NAME(PHY_CONFIGURATION_CMD), 365 HCMD_NAME(CALIB_RES_NOTIF_PHY_DB), 366 HCMD_NAME(PHY_DB_CMD), 367 HCMD_NAME(SCAN_OFFLOAD_COMPLETE), 368 HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_CMD), 369 HCMD_NAME(SCAN_OFFLOAD_CONFIG_CMD), 370 HCMD_NAME(POWER_TABLE_CMD), 371 HCMD_NAME(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION), 372 HCMD_NAME(REPLY_THERMAL_MNG_BACKOFF), 373 HCMD_NAME(DC2DC_CONFIG_CMD), 374 HCMD_NAME(NVM_ACCESS_CMD), 375 HCMD_NAME(SET_CALIB_DEFAULT_CMD), 376 HCMD_NAME(BEACON_NOTIFICATION), 377 HCMD_NAME(BEACON_TEMPLATE_CMD), 378 HCMD_NAME(TX_ANT_CONFIGURATION_CMD), 379 HCMD_NAME(BT_CONFIG), 380 HCMD_NAME(STATISTICS_CMD), 381 HCMD_NAME(STATISTICS_NOTIFICATION), 382 HCMD_NAME(EOSP_NOTIFICATION), 383 HCMD_NAME(REDUCE_TX_POWER_CMD), 384 HCMD_NAME(CARD_STATE_CMD), 385 HCMD_NAME(CARD_STATE_NOTIFICATION), 386 HCMD_NAME(MISSED_BEACONS_NOTIFICATION), 387 HCMD_NAME(TDLS_CONFIG_CMD), 388 HCMD_NAME(MAC_PM_POWER_TABLE), 389 HCMD_NAME(TDLS_CHANNEL_SWITCH_NOTIFICATION), 390 HCMD_NAME(MFUART_LOAD_NOTIFICATION), 391 HCMD_NAME(RSS_CONFIG_CMD), 392 HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC), 393 HCMD_NAME(REPLY_RX_PHY_CMD), 394 HCMD_NAME(REPLY_RX_MPDU_CMD), 395 HCMD_NAME(BA_NOTIF), 396 HCMD_NAME(MCC_UPDATE_CMD), 397 HCMD_NAME(MCC_CHUB_UPDATE_CMD), 398 HCMD_NAME(MARKER_CMD), 399 HCMD_NAME(BT_COEX_PRIO_TABLE), 400 HCMD_NAME(BT_COEX_PROT_ENV), 401 HCMD_NAME(BT_PROFILE_NOTIFICATION), 402 HCMD_NAME(BCAST_FILTER_CMD), 403 HCMD_NAME(MCAST_FILTER_CMD), 404 HCMD_NAME(REPLY_SF_CFG_CMD), 405 HCMD_NAME(REPLY_BEACON_FILTERING_CMD), 406 HCMD_NAME(D3_CONFIG_CMD), 407 HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD), 408 HCMD_NAME(OFFLOADS_QUERY_CMD), 409 HCMD_NAME(REMOTE_WAKE_CONFIG_CMD), 410 HCMD_NAME(MATCH_FOUND_NOTIFICATION), 411 HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER), 412 HCMD_NAME(DTS_MEASUREMENT_NOTIFICATION), 413 HCMD_NAME(WOWLAN_PATTERNS), 414 HCMD_NAME(WOWLAN_CONFIGURATION), 415 HCMD_NAME(WOWLAN_TSC_RSC_PARAM), 416 HCMD_NAME(WOWLAN_TKIP_PARAM), 417 HCMD_NAME(WOWLAN_KEK_KCK_MATERIAL), 418 HCMD_NAME(WOWLAN_GET_STATUSES), 419 HCMD_NAME(WOWLAN_TX_POWER_PER_DB), 420 HCMD_NAME(SCAN_ITERATION_COMPLETE), 421 HCMD_NAME(D0I3_END_CMD), 422 HCMD_NAME(LTR_CONFIG), 423 HCMD_NAME(REPLY_DEBUG_CMD), 424 }; 425 426 /* Please keep this array *SORTED* by hex value. 427 * Access is done through binary search 428 */ 429 static const struct iwl_hcmd_names iwl_mvm_system_names[] = { 430 HCMD_NAME(SHARED_MEM_CFG_CMD), 431 HCMD_NAME(INIT_EXTENDED_CFG_CMD), 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_mac_conf_names[] = { 438 HCMD_NAME(LINK_QUALITY_MEASUREMENT_CMD), 439 HCMD_NAME(LINK_QUALITY_MEASUREMENT_COMPLETE_NOTIF), 440 HCMD_NAME(CHANNEL_SWITCH_NOA_NOTIF), 441 }; 442 443 /* Please keep this array *SORTED* by hex value. 444 * Access is done through binary search 445 */ 446 static const struct iwl_hcmd_names iwl_mvm_phy_names[] = { 447 HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE), 448 HCMD_NAME(CTDP_CONFIG_CMD), 449 HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD), 450 HCMD_NAME(GEO_TX_POWER_LIMIT), 451 HCMD_NAME(CT_KILL_NOTIFICATION), 452 HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE), 453 }; 454 455 /* Please keep this array *SORTED* by hex value. 456 * Access is done through binary search 457 */ 458 static const struct iwl_hcmd_names iwl_mvm_data_path_names[] = { 459 HCMD_NAME(DQA_ENABLE_CMD), 460 HCMD_NAME(UPDATE_MU_GROUPS_CMD), 461 HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD), 462 HCMD_NAME(STA_PM_NOTIF), 463 HCMD_NAME(MU_GROUP_MGMT_NOTIF), 464 HCMD_NAME(RX_QUEUES_NOTIFICATION), 465 }; 466 467 /* Please keep this array *SORTED* by hex value. 468 * Access is done through binary search 469 */ 470 static const struct iwl_hcmd_names iwl_mvm_debug_names[] = { 471 HCMD_NAME(MFU_ASSERT_DUMP_NTF), 472 }; 473 474 /* Please keep this array *SORTED* by hex value. 475 * Access is done through binary search 476 */ 477 static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = { 478 HCMD_NAME(STORED_BEACON_NTF), 479 }; 480 481 /* Please keep this array *SORTED* by hex value. 482 * Access is done through binary search 483 */ 484 static const struct iwl_hcmd_names iwl_mvm_regulatory_and_nvm_names[] = { 485 HCMD_NAME(NVM_ACCESS_COMPLETE), 486 }; 487 488 static const struct iwl_hcmd_arr iwl_mvm_groups[] = { 489 [LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names), 490 [LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names), 491 [SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names), 492 [MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names), 493 [PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names), 494 [DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names), 495 [PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names), 496 [REGULATORY_AND_NVM_GROUP] = 497 HCMD_ARR(iwl_mvm_regulatory_and_nvm_names), 498 }; 499 500 /* this forward declaration can avoid to export the function */ 501 static void iwl_mvm_async_handlers_wk(struct work_struct *wk); 502 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk); 503 504 static u32 calc_min_backoff(struct iwl_trans *trans, const struct iwl_cfg *cfg) 505 { 506 const struct iwl_pwr_tx_backoff *pwr_tx_backoff = cfg->pwr_tx_backoffs; 507 508 if (!pwr_tx_backoff) 509 return 0; 510 511 while (pwr_tx_backoff->pwr) { 512 if (trans->dflt_pwr_limit >= pwr_tx_backoff->pwr) 513 return pwr_tx_backoff->backoff; 514 515 pwr_tx_backoff++; 516 } 517 518 return 0; 519 } 520 521 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work); 522 523 static void iwl_mvm_tx_unblock_dwork(struct work_struct *work) 524 { 525 struct iwl_mvm *mvm = 526 container_of(work, struct iwl_mvm, cs_tx_unblock_dwork.work); 527 struct ieee80211_vif *tx_blocked_vif; 528 struct iwl_mvm_vif *mvmvif; 529 530 mutex_lock(&mvm->mutex); 531 532 tx_blocked_vif = 533 rcu_dereference_protected(mvm->csa_tx_blocked_vif, 534 lockdep_is_held(&mvm->mutex)); 535 536 if (!tx_blocked_vif) 537 goto unlock; 538 539 mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif); 540 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false); 541 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); 542 unlock: 543 mutex_unlock(&mvm->mutex); 544 } 545 546 static struct iwl_op_mode * 547 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg, 548 const struct iwl_fw *fw, struct dentry *dbgfs_dir) 549 { 550 struct ieee80211_hw *hw; 551 struct iwl_op_mode *op_mode; 552 struct iwl_mvm *mvm; 553 struct iwl_trans_config trans_cfg = {}; 554 static const u8 no_reclaim_cmds[] = { 555 TX_CMD, 556 }; 557 int err, scan_size; 558 u32 min_backoff; 559 560 /* 561 * We use IWL_MVM_STATION_COUNT to check the validity of the station 562 * index all over the driver - check that its value corresponds to the 563 * array size. 564 */ 565 BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT); 566 567 /******************************** 568 * 1. Allocating and configuring HW data 569 ********************************/ 570 hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) + 571 sizeof(struct iwl_mvm), 572 &iwl_mvm_hw_ops); 573 if (!hw) 574 return NULL; 575 576 if (cfg->max_rx_agg_size) 577 hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size; 578 579 if (cfg->max_tx_agg_size) 580 hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size; 581 582 op_mode = hw->priv; 583 584 mvm = IWL_OP_MODE_GET_MVM(op_mode); 585 mvm->dev = trans->dev; 586 mvm->trans = trans; 587 mvm->cfg = cfg; 588 mvm->fw = fw; 589 mvm->hw = hw; 590 591 if (iwl_mvm_has_new_rx_api(mvm)) { 592 op_mode->ops = &iwl_mvm_ops_mq; 593 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_desc); 594 } else { 595 op_mode->ops = &iwl_mvm_ops; 596 trans->rx_mpdu_cmd_hdr_size = 597 sizeof(struct iwl_rx_mpdu_res_start); 598 599 if (WARN_ON(trans->num_rx_queues > 1)) 600 goto out_free; 601 } 602 603 mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0; 604 605 if (!iwl_mvm_is_dqa_supported(mvm)) { 606 mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1; 607 608 if (mvm->cfg->base_params->num_of_queues == 16) { 609 mvm->aux_queue = 11; 610 mvm->first_agg_queue = 12; 611 } else { 612 mvm->aux_queue = 15; 613 mvm->first_agg_queue = 16; 614 } 615 } else { 616 mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE; 617 mvm->probe_queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE; 618 mvm->p2p_dev_queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE; 619 mvm->first_agg_queue = IWL_MVM_DQA_MIN_DATA_QUEUE; 620 mvm->last_agg_queue = IWL_MVM_DQA_MAX_DATA_QUEUE; 621 } 622 mvm->sf_state = SF_UNINIT; 623 if (iwl_mvm_has_new_tx_api(mvm)) 624 mvm->cur_ucode = IWL_UCODE_REGULAR; 625 else 626 mvm->cur_ucode = IWL_UCODE_INIT; 627 mvm->drop_bcn_ap_mode = true; 628 629 mutex_init(&mvm->mutex); 630 mutex_init(&mvm->d0i3_suspend_mutex); 631 spin_lock_init(&mvm->async_handlers_lock); 632 INIT_LIST_HEAD(&mvm->time_event_list); 633 INIT_LIST_HEAD(&mvm->aux_roc_te_list); 634 INIT_LIST_HEAD(&mvm->async_handlers_list); 635 spin_lock_init(&mvm->time_event_lock); 636 spin_lock_init(&mvm->queue_info_lock); 637 638 INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk); 639 INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk); 640 INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk); 641 INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work); 642 INIT_DELAYED_WORK(&mvm->fw_dump_wk, iwl_mvm_fw_error_dump_wk); 643 INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work); 644 INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk); 645 INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk); 646 647 spin_lock_init(&mvm->d0i3_tx_lock); 648 spin_lock_init(&mvm->refs_lock); 649 skb_queue_head_init(&mvm->d0i3_tx); 650 init_waitqueue_head(&mvm->d0i3_exit_waitq); 651 init_waitqueue_head(&mvm->rx_sync_waitq); 652 653 atomic_set(&mvm->queue_sync_counter, 0); 654 655 SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev); 656 657 INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork); 658 659 /* 660 * Populate the state variables that the transport layer needs 661 * to know about. 662 */ 663 trans_cfg.op_mode = op_mode; 664 trans_cfg.no_reclaim_cmds = no_reclaim_cmds; 665 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds); 666 switch (iwlwifi_mod_params.amsdu_size) { 667 case IWL_AMSDU_DEF: 668 case IWL_AMSDU_4K: 669 trans_cfg.rx_buf_size = IWL_AMSDU_4K; 670 break; 671 case IWL_AMSDU_8K: 672 trans_cfg.rx_buf_size = IWL_AMSDU_8K; 673 break; 674 case IWL_AMSDU_12K: 675 trans_cfg.rx_buf_size = IWL_AMSDU_12K; 676 break; 677 default: 678 pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME, 679 iwlwifi_mod_params.amsdu_size); 680 trans_cfg.rx_buf_size = IWL_AMSDU_4K; 681 } 682 683 /* the hardware splits the A-MSDU */ 684 if (mvm->cfg->mq_rx_supported) 685 trans_cfg.rx_buf_size = IWL_AMSDU_4K; 686 687 trans->wide_cmd_header = true; 688 trans_cfg.bc_table_dword = true; 689 690 trans_cfg.command_groups = iwl_mvm_groups; 691 trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups); 692 693 if (iwl_mvm_is_dqa_supported(mvm)) 694 trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE; 695 else 696 trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE; 697 trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD; 698 trans_cfg.scd_set_active = true; 699 700 trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info, 701 driver_data[2]); 702 703 trans_cfg.sdio_adma_addr = fw->sdio_adma_addr; 704 trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD; 705 706 /* Set a short watchdog for the command queue */ 707 trans_cfg.cmd_q_wdg_timeout = 708 iwl_mvm_get_wd_timeout(mvm, NULL, false, true); 709 710 snprintf(mvm->hw->wiphy->fw_version, 711 sizeof(mvm->hw->wiphy->fw_version), 712 "%s", fw->fw_version); 713 714 /* Configure transport layer */ 715 iwl_trans_configure(mvm->trans, &trans_cfg); 716 717 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD; 718 trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv; 719 trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num; 720 memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv, 721 sizeof(trans->dbg_conf_tlv)); 722 trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv; 723 724 /* set up notification wait support */ 725 iwl_notification_wait_init(&mvm->notif_wait); 726 727 /* Init phy db */ 728 mvm->phy_db = iwl_phy_db_init(trans); 729 if (!mvm->phy_db) { 730 IWL_ERR(mvm, "Cannot init phy_db\n"); 731 goto out_free; 732 } 733 734 IWL_INFO(mvm, "Detected %s, REV=0x%X\n", 735 mvm->cfg->name, mvm->trans->hw_rev); 736 737 if (iwlwifi_mod_params.nvm_file) 738 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file; 739 else 740 IWL_DEBUG_EEPROM(mvm->trans->dev, 741 "working without external nvm file\n"); 742 743 err = iwl_trans_start_hw(mvm->trans); 744 if (err) 745 goto out_free; 746 747 mutex_lock(&mvm->mutex); 748 iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE); 749 err = iwl_run_init_mvm_ucode(mvm, true); 750 if (!err || !iwlmvm_mod_params.init_dbg) 751 iwl_mvm_stop_device(mvm); 752 iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE); 753 mutex_unlock(&mvm->mutex); 754 /* returns 0 if successful, 1 if success but in rfkill */ 755 if (err < 0 && !iwlmvm_mod_params.init_dbg) { 756 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err); 757 goto out_free; 758 } 759 760 scan_size = iwl_mvm_scan_size(mvm); 761 762 mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL); 763 if (!mvm->scan_cmd) 764 goto out_free; 765 766 /* Set EBS as successful as long as not stated otherwise by the FW. */ 767 mvm->last_ebs_successful = true; 768 769 err = iwl_mvm_mac_setup_register(mvm); 770 if (err) 771 goto out_free; 772 mvm->hw_registered = true; 773 774 min_backoff = calc_min_backoff(trans, cfg); 775 iwl_mvm_thermal_initialize(mvm, min_backoff); 776 777 err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir); 778 if (err) 779 goto out_unregister; 780 781 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx)); 782 783 /* The transport always starts with a taken reference, we can 784 * release it now if d0i3 is supported */ 785 if (iwl_mvm_is_d0i3_supported(mvm)) 786 iwl_trans_unref(mvm->trans); 787 788 iwl_mvm_tof_init(mvm); 789 790 return op_mode; 791 792 out_unregister: 793 ieee80211_unregister_hw(mvm->hw); 794 mvm->hw_registered = false; 795 iwl_mvm_leds_exit(mvm); 796 iwl_mvm_thermal_exit(mvm); 797 out_free: 798 flush_delayed_work(&mvm->fw_dump_wk); 799 iwl_phy_db_free(mvm->phy_db); 800 kfree(mvm->scan_cmd); 801 iwl_trans_op_mode_leave(trans); 802 803 ieee80211_free_hw(mvm->hw); 804 return NULL; 805 } 806 807 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode) 808 { 809 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 810 int i; 811 812 /* If d0i3 is supported, we have released the reference that 813 * the transport started with, so we should take it back now 814 * that we are leaving. 815 */ 816 if (iwl_mvm_is_d0i3_supported(mvm)) 817 iwl_trans_ref(mvm->trans); 818 819 iwl_mvm_leds_exit(mvm); 820 821 iwl_mvm_thermal_exit(mvm); 822 823 ieee80211_unregister_hw(mvm->hw); 824 825 kfree(mvm->scan_cmd); 826 kfree(mvm->mcast_filter_cmd); 827 mvm->mcast_filter_cmd = NULL; 828 829 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS) 830 kfree(mvm->d3_resume_sram); 831 #endif 832 833 iwl_trans_op_mode_leave(mvm->trans); 834 835 iwl_phy_db_free(mvm->phy_db); 836 mvm->phy_db = NULL; 837 838 iwl_free_nvm_data(mvm->nvm_data); 839 for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++) 840 kfree(mvm->nvm_sections[i].data); 841 842 iwl_mvm_tof_clean(mvm); 843 844 mutex_destroy(&mvm->mutex); 845 mutex_destroy(&mvm->d0i3_suspend_mutex); 846 847 ieee80211_free_hw(mvm->hw); 848 } 849 850 struct iwl_async_handler_entry { 851 struct list_head list; 852 struct iwl_rx_cmd_buffer rxb; 853 enum iwl_rx_handler_context context; 854 void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb); 855 }; 856 857 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm) 858 { 859 struct iwl_async_handler_entry *entry, *tmp; 860 861 spin_lock_bh(&mvm->async_handlers_lock); 862 list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) { 863 iwl_free_rxb(&entry->rxb); 864 list_del(&entry->list); 865 kfree(entry); 866 } 867 spin_unlock_bh(&mvm->async_handlers_lock); 868 } 869 870 static void iwl_mvm_async_handlers_wk(struct work_struct *wk) 871 { 872 struct iwl_mvm *mvm = 873 container_of(wk, struct iwl_mvm, async_handlers_wk); 874 struct iwl_async_handler_entry *entry, *tmp; 875 LIST_HEAD(local_list); 876 877 /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */ 878 879 /* 880 * Sync with Rx path with a lock. Remove all the entries from this list, 881 * add them to a local one (lock free), and then handle them. 882 */ 883 spin_lock_bh(&mvm->async_handlers_lock); 884 list_splice_init(&mvm->async_handlers_list, &local_list); 885 spin_unlock_bh(&mvm->async_handlers_lock); 886 887 list_for_each_entry_safe(entry, tmp, &local_list, list) { 888 if (entry->context == RX_HANDLER_ASYNC_LOCKED) 889 mutex_lock(&mvm->mutex); 890 entry->fn(mvm, &entry->rxb); 891 iwl_free_rxb(&entry->rxb); 892 list_del(&entry->list); 893 if (entry->context == RX_HANDLER_ASYNC_LOCKED) 894 mutex_unlock(&mvm->mutex); 895 kfree(entry); 896 } 897 } 898 899 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm, 900 struct iwl_rx_packet *pkt) 901 { 902 struct iwl_fw_dbg_trigger_tlv *trig; 903 struct iwl_fw_dbg_trigger_cmd *cmds_trig; 904 int i; 905 906 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF)) 907 return; 908 909 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF); 910 cmds_trig = (void *)trig->data; 911 912 if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig)) 913 return; 914 915 for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) { 916 /* don't collect on CMD 0 */ 917 if (!cmds_trig->cmds[i].cmd_id) 918 break; 919 920 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd || 921 cmds_trig->cmds[i].group_id != pkt->hdr.group_id) 922 continue; 923 924 iwl_mvm_fw_dbg_collect_trig(mvm, trig, 925 "CMD 0x%02x.%02x received", 926 pkt->hdr.group_id, pkt->hdr.cmd); 927 break; 928 } 929 } 930 931 static void iwl_mvm_rx_common(struct iwl_mvm *mvm, 932 struct iwl_rx_cmd_buffer *rxb, 933 struct iwl_rx_packet *pkt) 934 { 935 int i; 936 937 iwl_mvm_rx_check_trigger(mvm, pkt); 938 939 /* 940 * Do the notification wait before RX handlers so 941 * even if the RX handler consumes the RXB we have 942 * access to it in the notification wait entry. 943 */ 944 iwl_notification_wait_notify(&mvm->notif_wait, pkt); 945 946 for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) { 947 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i]; 948 struct iwl_async_handler_entry *entry; 949 950 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) 951 continue; 952 953 if (rx_h->context == RX_HANDLER_SYNC) { 954 rx_h->fn(mvm, rxb); 955 return; 956 } 957 958 entry = kzalloc(sizeof(*entry), GFP_ATOMIC); 959 /* we can't do much... */ 960 if (!entry) 961 return; 962 963 entry->rxb._page = rxb_steal_page(rxb); 964 entry->rxb._offset = rxb->_offset; 965 entry->rxb._rx_page_order = rxb->_rx_page_order; 966 entry->fn = rx_h->fn; 967 entry->context = rx_h->context; 968 spin_lock(&mvm->async_handlers_lock); 969 list_add_tail(&entry->list, &mvm->async_handlers_list); 970 spin_unlock(&mvm->async_handlers_lock); 971 schedule_work(&mvm->async_handlers_wk); 972 break; 973 } 974 } 975 976 static void iwl_mvm_rx(struct iwl_op_mode *op_mode, 977 struct napi_struct *napi, 978 struct iwl_rx_cmd_buffer *rxb) 979 { 980 struct iwl_rx_packet *pkt = rxb_addr(rxb); 981 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 982 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); 983 984 if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))) 985 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb); 986 else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD)) 987 iwl_mvm_rx_rx_phy_cmd(mvm, rxb); 988 else 989 iwl_mvm_rx_common(mvm, rxb, pkt); 990 } 991 992 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode, 993 struct napi_struct *napi, 994 struct iwl_rx_cmd_buffer *rxb) 995 { 996 struct iwl_rx_packet *pkt = rxb_addr(rxb); 997 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 998 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); 999 1000 if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))) 1001 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0); 1002 else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP, 1003 RX_QUEUES_NOTIFICATION))) 1004 iwl_mvm_rx_queue_notif(mvm, rxb, 0); 1005 else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)) 1006 iwl_mvm_rx_frame_release(mvm, napi, rxb, 0); 1007 else 1008 iwl_mvm_rx_common(mvm, rxb, pkt); 1009 } 1010 1011 void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq) 1012 { 1013 int q; 1014 1015 if (WARN_ON_ONCE(!mq)) 1016 return; 1017 1018 for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) { 1019 if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) { 1020 IWL_DEBUG_TX_QUEUES(mvm, 1021 "mac80211 %d already stopped\n", q); 1022 continue; 1023 } 1024 1025 ieee80211_stop_queue(mvm->hw, q); 1026 } 1027 } 1028 1029 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode, 1030 const struct iwl_device_cmd *cmd) 1031 { 1032 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1033 1034 /* 1035 * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA 1036 * commands that need to block the Tx queues. 1037 */ 1038 iwl_trans_block_txq_ptrs(mvm->trans, false); 1039 } 1040 1041 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue) 1042 { 1043 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1044 unsigned long mq; 1045 1046 spin_lock_bh(&mvm->queue_info_lock); 1047 mq = mvm->hw_queue_to_mac80211[hw_queue]; 1048 spin_unlock_bh(&mvm->queue_info_lock); 1049 1050 iwl_mvm_stop_mac_queues(mvm, mq); 1051 } 1052 1053 void iwl_mvm_start_mac_queues(struct iwl_mvm *mvm, unsigned long mq) 1054 { 1055 int q; 1056 1057 if (WARN_ON_ONCE(!mq)) 1058 return; 1059 1060 for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) { 1061 if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) { 1062 IWL_DEBUG_TX_QUEUES(mvm, 1063 "mac80211 %d still stopped\n", q); 1064 continue; 1065 } 1066 1067 ieee80211_wake_queue(mvm->hw, q); 1068 } 1069 } 1070 1071 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue) 1072 { 1073 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1074 unsigned long mq; 1075 1076 spin_lock_bh(&mvm->queue_info_lock); 1077 mq = mvm->hw_queue_to_mac80211[hw_queue]; 1078 spin_unlock_bh(&mvm->queue_info_lock); 1079 1080 iwl_mvm_start_mac_queues(mvm, mq); 1081 } 1082 1083 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state) 1084 { 1085 if (state) 1086 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); 1087 else 1088 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); 1089 1090 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm)); 1091 } 1092 1093 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state) 1094 { 1095 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1096 bool calibrating = ACCESS_ONCE(mvm->calibrating); 1097 1098 if (state) 1099 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); 1100 else 1101 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); 1102 1103 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm)); 1104 1105 /* iwl_run_init_mvm_ucode is waiting for results, abort it */ 1106 if (calibrating) 1107 iwl_abort_notification_waits(&mvm->notif_wait); 1108 1109 /* 1110 * Stop the device if we run OPERATIONAL firmware or if we are in the 1111 * middle of the calibrations. 1112 */ 1113 return state && (mvm->cur_ucode != IWL_UCODE_INIT || calibrating); 1114 } 1115 1116 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb) 1117 { 1118 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1119 struct ieee80211_tx_info *info; 1120 1121 info = IEEE80211_SKB_CB(skb); 1122 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]); 1123 ieee80211_free_txskb(mvm->hw, skb); 1124 } 1125 1126 struct iwl_mvm_reprobe { 1127 struct device *dev; 1128 struct work_struct work; 1129 }; 1130 1131 static void iwl_mvm_reprobe_wk(struct work_struct *wk) 1132 { 1133 struct iwl_mvm_reprobe *reprobe; 1134 1135 reprobe = container_of(wk, struct iwl_mvm_reprobe, work); 1136 if (device_reprobe(reprobe->dev)) 1137 dev_err(reprobe->dev, "reprobe failed!\n"); 1138 kfree(reprobe); 1139 module_put(THIS_MODULE); 1140 } 1141 1142 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work) 1143 { 1144 struct iwl_mvm *mvm = 1145 container_of(work, struct iwl_mvm, fw_dump_wk.work); 1146 1147 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT)) 1148 return; 1149 1150 mutex_lock(&mvm->mutex); 1151 1152 /* stop recording */ 1153 if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000) { 1154 iwl_set_bits_prph(mvm->trans, MON_BUFF_SAMPLE_CTL, 0x100); 1155 } else { 1156 iwl_write_prph(mvm->trans, DBGC_IN_SAMPLE, 0); 1157 /* wait before we collect the data till the DBGC stop */ 1158 udelay(100); 1159 } 1160 1161 iwl_mvm_fw_error_dump(mvm); 1162 1163 /* start recording again if the firmware is not crashed */ 1164 WARN_ON_ONCE((!test_bit(STATUS_FW_ERROR, &mvm->trans->status)) && 1165 mvm->fw->dbg_dest_tlv && 1166 iwl_mvm_start_fw_dbg_conf(mvm, mvm->fw_dbg_conf)); 1167 1168 mutex_unlock(&mvm->mutex); 1169 1170 iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT); 1171 } 1172 1173 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error) 1174 { 1175 iwl_abort_notification_waits(&mvm->notif_wait); 1176 1177 /* 1178 * This is a bit racy, but worst case we tell mac80211 about 1179 * a stopped/aborted scan when that was already done which 1180 * is not a problem. It is necessary to abort any os scan 1181 * here because mac80211 requires having the scan cleared 1182 * before restarting. 1183 * We'll reset the scan_status to NONE in restart cleanup in 1184 * the next start() call from mac80211. If restart isn't called 1185 * (no fw restart) scan status will stay busy. 1186 */ 1187 iwl_mvm_report_scan_aborted(mvm); 1188 1189 /* 1190 * If we're restarting already, don't cycle restarts. 1191 * If INIT fw asserted, it will likely fail again. 1192 * If WoWLAN fw asserted, don't restart either, mac80211 1193 * can't recover this since we're already half suspended. 1194 */ 1195 if (!mvm->restart_fw && fw_error) { 1196 iwl_mvm_fw_dbg_collect_desc(mvm, &iwl_mvm_dump_desc_assert, 1197 NULL); 1198 } else if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART, 1199 &mvm->status)) { 1200 struct iwl_mvm_reprobe *reprobe; 1201 1202 IWL_ERR(mvm, 1203 "Firmware error during reconfiguration - reprobe!\n"); 1204 1205 /* 1206 * get a module reference to avoid doing this while unloading 1207 * anyway and to avoid scheduling a work with code that's 1208 * being removed. 1209 */ 1210 if (!try_module_get(THIS_MODULE)) { 1211 IWL_ERR(mvm, "Module is being unloaded - abort\n"); 1212 return; 1213 } 1214 1215 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC); 1216 if (!reprobe) { 1217 module_put(THIS_MODULE); 1218 return; 1219 } 1220 reprobe->dev = mvm->trans->dev; 1221 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk); 1222 schedule_work(&reprobe->work); 1223 } else if (mvm->cur_ucode == IWL_UCODE_REGULAR && 1224 mvm->hw_registered) { 1225 /* don't let the transport/FW power down */ 1226 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); 1227 1228 if (fw_error && mvm->restart_fw > 0) 1229 mvm->restart_fw--; 1230 ieee80211_restart_hw(mvm->hw); 1231 } 1232 } 1233 1234 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode) 1235 { 1236 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1237 1238 iwl_mvm_dump_nic_error_log(mvm); 1239 1240 iwl_mvm_nic_restart(mvm, true); 1241 } 1242 1243 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode) 1244 { 1245 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1246 1247 WARN_ON(1); 1248 iwl_mvm_nic_restart(mvm, true); 1249 } 1250 1251 struct iwl_d0i3_iter_data { 1252 struct iwl_mvm *mvm; 1253 struct ieee80211_vif *connected_vif; 1254 u8 ap_sta_id; 1255 u8 vif_count; 1256 u8 offloading_tid; 1257 bool disable_offloading; 1258 }; 1259 1260 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm, 1261 struct ieee80211_vif *vif, 1262 struct iwl_d0i3_iter_data *iter_data) 1263 { 1264 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1265 struct iwl_mvm_sta *mvmsta; 1266 u32 available_tids = 0; 1267 u8 tid; 1268 1269 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION || 1270 mvmvif->ap_sta_id == IWL_MVM_INVALID_STA)) 1271 return false; 1272 1273 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); 1274 if (!mvmsta) 1275 return false; 1276 1277 spin_lock_bh(&mvmsta->lock); 1278 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1279 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 1280 1281 /* 1282 * in case of pending tx packets, don't use this tid 1283 * for offloading in order to prevent reuse of the same 1284 * qos seq counters. 1285 */ 1286 if (iwl_mvm_tid_queued(tid_data)) 1287 continue; 1288 1289 if (tid_data->state != IWL_AGG_OFF) 1290 continue; 1291 1292 available_tids |= BIT(tid); 1293 } 1294 spin_unlock_bh(&mvmsta->lock); 1295 1296 /* 1297 * disallow protocol offloading if we have no available tid 1298 * (with no pending frames and no active aggregation, 1299 * as we don't handle "holes" properly - the scheduler needs the 1300 * frame's seq number and TFD index to match) 1301 */ 1302 if (!available_tids) 1303 return true; 1304 1305 /* for simplicity, just use the first available tid */ 1306 iter_data->offloading_tid = ffs(available_tids) - 1; 1307 return false; 1308 } 1309 1310 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac, 1311 struct ieee80211_vif *vif) 1312 { 1313 struct iwl_d0i3_iter_data *data = _data; 1314 struct iwl_mvm *mvm = data->mvm; 1315 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1316 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; 1317 1318 IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr); 1319 if (vif->type != NL80211_IFTYPE_STATION || 1320 !vif->bss_conf.assoc) 1321 return; 1322 1323 /* 1324 * in case of pending tx packets or active aggregations, 1325 * avoid offloading features in order to prevent reuse of 1326 * the same qos seq counters. 1327 */ 1328 if (iwl_mvm_disallow_offloading(mvm, vif, data)) 1329 data->disable_offloading = true; 1330 1331 iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags); 1332 iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading, 1333 false, flags); 1334 1335 /* 1336 * on init/association, mvm already configures POWER_TABLE_CMD 1337 * and REPLY_MCAST_FILTER_CMD, so currently don't 1338 * reconfigure them (we might want to use different 1339 * params later on, though). 1340 */ 1341 data->ap_sta_id = mvmvif->ap_sta_id; 1342 data->vif_count++; 1343 1344 /* 1345 * no new commands can be sent at this stage, so it's safe 1346 * to save the vif pointer during d0i3 entrance. 1347 */ 1348 data->connected_vif = vif; 1349 } 1350 1351 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm, 1352 struct iwl_wowlan_config_cmd *cmd, 1353 struct iwl_d0i3_iter_data *iter_data) 1354 { 1355 struct ieee80211_sta *ap_sta; 1356 struct iwl_mvm_sta *mvm_ap_sta; 1357 1358 if (iter_data->ap_sta_id == IWL_MVM_INVALID_STA) 1359 return; 1360 1361 rcu_read_lock(); 1362 1363 ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]); 1364 if (IS_ERR_OR_NULL(ap_sta)) 1365 goto out; 1366 1367 mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta); 1368 cmd->is_11n_connection = ap_sta->ht_cap.ht_supported; 1369 cmd->offloading_tid = iter_data->offloading_tid; 1370 cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING | 1371 ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON; 1372 /* 1373 * The d0i3 uCode takes care of the nonqos counters, 1374 * so configure only the qos seq ones. 1375 */ 1376 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd); 1377 out: 1378 rcu_read_unlock(); 1379 } 1380 1381 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode) 1382 { 1383 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1384 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; 1385 int ret; 1386 struct iwl_d0i3_iter_data d0i3_iter_data = { 1387 .mvm = mvm, 1388 }; 1389 struct iwl_wowlan_config_cmd wowlan_config_cmd = { 1390 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME | 1391 IWL_WOWLAN_WAKEUP_BEACON_MISS | 1392 IWL_WOWLAN_WAKEUP_LINK_CHANGE), 1393 }; 1394 struct iwl_d3_manager_config d3_cfg_cmd = { 1395 .min_sleep_time = cpu_to_le32(1000), 1396 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR), 1397 }; 1398 1399 IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n"); 1400 1401 if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR)) 1402 return -EINVAL; 1403 1404 set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1405 1406 /* 1407 * iwl_mvm_ref_sync takes a reference before checking the flag. 1408 * so by checking there is no held reference we prevent a state 1409 * in which iwl_mvm_ref_sync continues successfully while we 1410 * configure the firmware to enter d0i3 1411 */ 1412 if (iwl_mvm_ref_taken(mvm)) { 1413 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n"); 1414 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1415 wake_up(&mvm->d0i3_exit_waitq); 1416 return 1; 1417 } 1418 1419 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1420 IEEE80211_IFACE_ITER_NORMAL, 1421 iwl_mvm_enter_d0i3_iterator, 1422 &d0i3_iter_data); 1423 if (d0i3_iter_data.vif_count == 1) { 1424 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id; 1425 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading; 1426 } else { 1427 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1); 1428 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA; 1429 mvm->d0i3_offloading = false; 1430 } 1431 1432 /* make sure we have no running tx while configuring the seqno */ 1433 synchronize_net(); 1434 1435 /* Flush the hw queues, in case something got queued during entry */ 1436 ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm), flags); 1437 if (ret) 1438 return ret; 1439 1440 /* configure wowlan configuration only if needed */ 1441 if (mvm->d0i3_ap_sta_id != IWL_MVM_INVALID_STA) { 1442 /* wake on beacons only if beacon storing isn't supported */ 1443 if (!fw_has_capa(&mvm->fw->ucode_capa, 1444 IWL_UCODE_TLV_CAPA_BEACON_STORING)) 1445 wowlan_config_cmd.wakeup_filter |= 1446 cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING); 1447 1448 iwl_mvm_wowlan_config_key_params(mvm, 1449 d0i3_iter_data.connected_vif, 1450 true, flags); 1451 1452 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd, 1453 &d0i3_iter_data); 1454 1455 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags, 1456 sizeof(wowlan_config_cmd), 1457 &wowlan_config_cmd); 1458 if (ret) 1459 return ret; 1460 } 1461 1462 return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD, 1463 flags | CMD_MAKE_TRANS_IDLE, 1464 sizeof(d3_cfg_cmd), &d3_cfg_cmd); 1465 } 1466 1467 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac, 1468 struct ieee80211_vif *vif) 1469 { 1470 struct iwl_mvm *mvm = _data; 1471 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO; 1472 1473 IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr); 1474 if (vif->type != NL80211_IFTYPE_STATION || 1475 !vif->bss_conf.assoc) 1476 return; 1477 1478 iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags); 1479 } 1480 1481 struct iwl_mvm_d0i3_exit_work_iter_data { 1482 struct iwl_mvm *mvm; 1483 struct iwl_wowlan_status *status; 1484 u32 wakeup_reasons; 1485 }; 1486 1487 static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac, 1488 struct ieee80211_vif *vif) 1489 { 1490 struct iwl_mvm_d0i3_exit_work_iter_data *data = _data; 1491 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1492 u32 reasons = data->wakeup_reasons; 1493 1494 /* consider only the relevant station interface */ 1495 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc || 1496 data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id) 1497 return; 1498 1499 if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH) 1500 iwl_mvm_connection_loss(data->mvm, vif, "D0i3"); 1501 else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON) 1502 ieee80211_beacon_loss(vif); 1503 else 1504 iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status); 1505 } 1506 1507 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq) 1508 { 1509 struct ieee80211_sta *sta = NULL; 1510 struct iwl_mvm_sta *mvm_ap_sta; 1511 int i; 1512 bool wake_queues = false; 1513 1514 lockdep_assert_held(&mvm->mutex); 1515 1516 spin_lock_bh(&mvm->d0i3_tx_lock); 1517 1518 if (mvm->d0i3_ap_sta_id == IWL_MVM_INVALID_STA) 1519 goto out; 1520 1521 IWL_DEBUG_RPM(mvm, "re-enqueue packets\n"); 1522 1523 /* get the sta in order to update seq numbers and re-enqueue skbs */ 1524 sta = rcu_dereference_protected( 1525 mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id], 1526 lockdep_is_held(&mvm->mutex)); 1527 1528 if (IS_ERR_OR_NULL(sta)) { 1529 sta = NULL; 1530 goto out; 1531 } 1532 1533 if (mvm->d0i3_offloading && qos_seq) { 1534 /* update qos seq numbers if offloading was enabled */ 1535 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta); 1536 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1537 u16 seq = le16_to_cpu(qos_seq[i]); 1538 /* firmware stores last-used one, we store next one */ 1539 seq += 0x10; 1540 mvm_ap_sta->tid_data[i].seq_number = seq; 1541 } 1542 } 1543 out: 1544 /* re-enqueue (or drop) all packets */ 1545 while (!skb_queue_empty(&mvm->d0i3_tx)) { 1546 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx); 1547 1548 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta)) 1549 ieee80211_free_txskb(mvm->hw, skb); 1550 1551 /* if the skb_queue is not empty, we need to wake queues */ 1552 wake_queues = true; 1553 } 1554 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1555 wake_up(&mvm->d0i3_exit_waitq); 1556 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA; 1557 if (wake_queues) 1558 ieee80211_wake_queues(mvm->hw); 1559 1560 spin_unlock_bh(&mvm->d0i3_tx_lock); 1561 } 1562 1563 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk) 1564 { 1565 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work); 1566 struct iwl_host_cmd get_status_cmd = { 1567 .id = WOWLAN_GET_STATUSES, 1568 .flags = CMD_HIGH_PRIO | CMD_WANT_SKB, 1569 }; 1570 struct iwl_mvm_d0i3_exit_work_iter_data iter_data = { 1571 .mvm = mvm, 1572 }; 1573 1574 struct iwl_wowlan_status *status; 1575 int ret; 1576 u32 wakeup_reasons = 0; 1577 __le16 *qos_seq = NULL; 1578 1579 mutex_lock(&mvm->mutex); 1580 ret = iwl_mvm_send_cmd(mvm, &get_status_cmd); 1581 if (ret) 1582 goto out; 1583 1584 if (!get_status_cmd.resp_pkt) 1585 goto out; 1586 1587 status = (void *)get_status_cmd.resp_pkt->data; 1588 wakeup_reasons = le32_to_cpu(status->wakeup_reasons); 1589 qos_seq = status->qos_seq_ctr; 1590 1591 IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons); 1592 1593 iter_data.wakeup_reasons = wakeup_reasons; 1594 iter_data.status = status; 1595 ieee80211_iterate_active_interfaces(mvm->hw, 1596 IEEE80211_IFACE_ITER_NORMAL, 1597 iwl_mvm_d0i3_exit_work_iter, 1598 &iter_data); 1599 out: 1600 iwl_mvm_d0i3_enable_tx(mvm, qos_seq); 1601 1602 IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n", 1603 wakeup_reasons); 1604 1605 /* qos_seq might point inside resp_pkt, so free it only now */ 1606 if (get_status_cmd.resp_pkt) 1607 iwl_free_resp(&get_status_cmd); 1608 1609 /* the FW might have updated the regdomain */ 1610 iwl_mvm_update_changed_regdom(mvm); 1611 1612 iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK); 1613 mutex_unlock(&mvm->mutex); 1614 } 1615 1616 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm) 1617 { 1618 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE | 1619 CMD_WAKE_UP_TRANS; 1620 int ret; 1621 1622 IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n"); 1623 1624 if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR)) 1625 return -EINVAL; 1626 1627 mutex_lock(&mvm->d0i3_suspend_mutex); 1628 if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) { 1629 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n"); 1630 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags); 1631 mutex_unlock(&mvm->d0i3_suspend_mutex); 1632 return 0; 1633 } 1634 mutex_unlock(&mvm->d0i3_suspend_mutex); 1635 1636 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL); 1637 if (ret) 1638 goto out; 1639 1640 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1641 IEEE80211_IFACE_ITER_NORMAL, 1642 iwl_mvm_exit_d0i3_iterator, 1643 mvm); 1644 out: 1645 schedule_work(&mvm->d0i3_exit_work); 1646 return ret; 1647 } 1648 1649 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode) 1650 { 1651 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1652 1653 iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK); 1654 return _iwl_mvm_exit_d0i3(mvm); 1655 } 1656 1657 #define IWL_MVM_COMMON_OPS \ 1658 /* these could be differentiated */ \ 1659 .async_cb = iwl_mvm_async_cb, \ 1660 .queue_full = iwl_mvm_stop_sw_queue, \ 1661 .queue_not_full = iwl_mvm_wake_sw_queue, \ 1662 .hw_rf_kill = iwl_mvm_set_hw_rfkill_state, \ 1663 .free_skb = iwl_mvm_free_skb, \ 1664 .nic_error = iwl_mvm_nic_error, \ 1665 .cmd_queue_full = iwl_mvm_cmd_queue_full, \ 1666 .nic_config = iwl_mvm_nic_config, \ 1667 .enter_d0i3 = iwl_mvm_enter_d0i3, \ 1668 .exit_d0i3 = iwl_mvm_exit_d0i3, \ 1669 /* as we only register one, these MUST be common! */ \ 1670 .start = iwl_op_mode_mvm_start, \ 1671 .stop = iwl_op_mode_mvm_stop 1672 1673 static const struct iwl_op_mode_ops iwl_mvm_ops = { 1674 IWL_MVM_COMMON_OPS, 1675 .rx = iwl_mvm_rx, 1676 }; 1677 1678 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode, 1679 struct napi_struct *napi, 1680 struct iwl_rx_cmd_buffer *rxb, 1681 unsigned int queue) 1682 { 1683 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1684 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1685 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); 1686 1687 if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))) 1688 iwl_mvm_rx_frame_release(mvm, napi, rxb, queue); 1689 else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP, 1690 RX_QUEUES_NOTIFICATION))) 1691 iwl_mvm_rx_queue_notif(mvm, rxb, queue); 1692 else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))) 1693 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue); 1694 } 1695 1696 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = { 1697 IWL_MVM_COMMON_OPS, 1698 .rx = iwl_mvm_rx_mq, 1699 .rx_rss = iwl_mvm_rx_mq_rss, 1700 }; 1701