1 /****************************************************************************** 2 * 3 * This file is provided under a dual BSD/GPLv2 license. When using or 4 * redistributing this file, you may do so under either license. 5 * 6 * GPL LICENSE SUMMARY 7 * 8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 9 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of version 2 of the GNU General Public License as 13 * published by the Free Software Foundation. 14 * 15 * This program is distributed in the hope that it will be useful, but 16 * WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 18 * General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, 23 * USA 24 * 25 * The full GNU General Public License is included in this distribution 26 * in the file called COPYING. 27 * 28 * Contact Information: 29 * Intel Linux Wireless <linuxwifi@intel.com> 30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 31 * 32 * BSD LICENSE 33 * 34 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 35 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 36 * Copyright(c) 2016 Intel Deutschland GmbH 37 * All rights reserved. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 43 * * Redistributions of source code must retain the above copyright 44 * notice, this list of conditions and the following disclaimer. 45 * * Redistributions in binary form must reproduce the above copyright 46 * notice, this list of conditions and the following disclaimer in 47 * the documentation and/or other materials provided with the 48 * distribution. 49 * * Neither the name Intel Corporation nor the names of its 50 * contributors may be used to endorse or promote products derived 51 * from this software without specific prior written permission. 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 54 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 55 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 56 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 57 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 58 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 59 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 60 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 61 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 62 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 63 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 64 * 65 *****************************************************************************/ 66 #include <linux/module.h> 67 #include <linux/vmalloc.h> 68 #include <net/mac80211.h> 69 70 #include "iwl-notif-wait.h" 71 #include "iwl-trans.h" 72 #include "iwl-op-mode.h" 73 #include "iwl-fw.h" 74 #include "iwl-debug.h" 75 #include "iwl-drv.h" 76 #include "iwl-modparams.h" 77 #include "mvm.h" 78 #include "iwl-phy-db.h" 79 #include "iwl-eeprom-parse.h" 80 #include "iwl-csr.h" 81 #include "iwl-io.h" 82 #include "iwl-prph.h" 83 #include "rs.h" 84 #include "fw-api-scan.h" 85 #include "time-event.h" 86 #include "fw-dbg.h" 87 #include "fw-api.h" 88 #include "fw-api-scan.h" 89 90 #define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux" 91 MODULE_DESCRIPTION(DRV_DESCRIPTION); 92 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR); 93 MODULE_LICENSE("GPL"); 94 95 static const struct iwl_op_mode_ops iwl_mvm_ops; 96 static const struct iwl_op_mode_ops iwl_mvm_ops_mq; 97 98 struct iwl_mvm_mod_params iwlmvm_mod_params = { 99 .power_scheme = IWL_POWER_SCHEME_BPS, 100 .tfd_q_hang_detect = true 101 /* rest of fields are 0 by default */ 102 }; 103 104 module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, S_IRUGO); 105 MODULE_PARM_DESC(init_dbg, 106 "set to true to debug an ASSERT in INIT fw (default: false"); 107 module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, S_IRUGO); 108 MODULE_PARM_DESC(power_scheme, 109 "power management scheme: 1-active, 2-balanced, 3-low power, default: 2"); 110 module_param_named(tfd_q_hang_detect, iwlmvm_mod_params.tfd_q_hang_detect, 111 bool, S_IRUGO); 112 MODULE_PARM_DESC(tfd_q_hang_detect, 113 "TFD queues hang detection (default: true"); 114 115 /* 116 * module init and exit functions 117 */ 118 static int __init iwl_mvm_init(void) 119 { 120 int ret; 121 122 ret = iwl_mvm_rate_control_register(); 123 if (ret) { 124 pr_err("Unable to register rate control algorithm: %d\n", ret); 125 return ret; 126 } 127 128 ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops); 129 130 if (ret) { 131 pr_err("Unable to register MVM op_mode: %d\n", ret); 132 iwl_mvm_rate_control_unregister(); 133 } 134 135 return ret; 136 } 137 module_init(iwl_mvm_init); 138 139 static void __exit iwl_mvm_exit(void) 140 { 141 iwl_opmode_deregister("iwlmvm"); 142 iwl_mvm_rate_control_unregister(); 143 } 144 module_exit(iwl_mvm_exit); 145 146 static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode) 147 { 148 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 149 u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash; 150 u32 reg_val = 0; 151 u32 phy_config = iwl_mvm_get_phy_config(mvm); 152 153 radio_cfg_type = (phy_config & FW_PHY_CFG_RADIO_TYPE) >> 154 FW_PHY_CFG_RADIO_TYPE_POS; 155 radio_cfg_step = (phy_config & FW_PHY_CFG_RADIO_STEP) >> 156 FW_PHY_CFG_RADIO_STEP_POS; 157 radio_cfg_dash = (phy_config & FW_PHY_CFG_RADIO_DASH) >> 158 FW_PHY_CFG_RADIO_DASH_POS; 159 160 /* SKU control */ 161 reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) << 162 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP; 163 reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) << 164 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH; 165 166 /* radio configuration */ 167 reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE; 168 reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP; 169 reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH; 170 171 WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) & 172 ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE); 173 174 /* 175 * TODO: Bits 7-8 of CSR in 8000 HW family set the ADC sampling, and 176 * shouldn't be set to any non-zero value. The same is supposed to be 177 * true of the other HW, but unsetting them (such as the 7260) causes 178 * automatic tests to fail on seemingly unrelated errors. Need to 179 * further investigate this, but for now we'll separate cases. 180 */ 181 if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000) 182 reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI; 183 184 iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG, 185 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH | 186 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP | 187 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE | 188 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP | 189 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH | 190 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI | 191 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI, 192 reg_val); 193 194 IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type, 195 radio_cfg_step, radio_cfg_dash); 196 197 /* 198 * W/A : NIC is stuck in a reset state after Early PCIe power off 199 * (PCIe power is lost before PERST# is asserted), causing ME FW 200 * to lose ownership and not being able to obtain it back. 201 */ 202 if (!mvm->trans->cfg->apmg_not_supported) 203 iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG, 204 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS, 205 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS); 206 } 207 208 /** 209 * enum iwl_rx_handler_context context for Rx handler 210 * @RX_HANDLER_SYNC : this means that it will be called in the Rx path 211 * which can't acquire mvm->mutex. 212 * @RX_HANDLER_ASYNC_LOCKED : If the handler needs to hold mvm->mutex 213 * (and only in this case!), it should be set as ASYNC. In that case, 214 * it will be called from a worker with mvm->mutex held. 215 * @RX_HANDLER_ASYNC_UNLOCKED : in case the handler needs to lock the 216 * mutex itself, it will be called from a worker without mvm->mutex held. 217 */ 218 enum iwl_rx_handler_context { 219 RX_HANDLER_SYNC, 220 RX_HANDLER_ASYNC_LOCKED, 221 RX_HANDLER_ASYNC_UNLOCKED, 222 }; 223 224 /** 225 * struct iwl_rx_handlers handler for FW notification 226 * @cmd_id: command id 227 * @context: see &iwl_rx_handler_context 228 * @fn: the function is called when notification is received 229 */ 230 struct iwl_rx_handlers { 231 u16 cmd_id; 232 enum iwl_rx_handler_context context; 233 void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb); 234 }; 235 236 #define RX_HANDLER(_cmd_id, _fn, _context) \ 237 { .cmd_id = _cmd_id, .fn = _fn, .context = _context } 238 #define RX_HANDLER_GRP(_grp, _cmd, _fn, _context) \ 239 { .cmd_id = WIDE_ID(_grp, _cmd), .fn = _fn, .context = _context } 240 241 /* 242 * Handlers for fw notifications 243 * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME 244 * This list should be in order of frequency for performance purposes. 245 * 246 * The handler can be one from three contexts, see &iwl_rx_handler_context 247 */ 248 static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = { 249 RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, RX_HANDLER_SYNC), 250 RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, RX_HANDLER_SYNC), 251 252 RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif, 253 RX_HANDLER_ASYNC_LOCKED), 254 RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif, 255 RX_HANDLER_ASYNC_LOCKED), 256 RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics, 257 RX_HANDLER_ASYNC_LOCKED), 258 RX_HANDLER(ANTENNA_COUPLING_NOTIFICATION, 259 iwl_mvm_rx_ant_coupling_notif, RX_HANDLER_ASYNC_LOCKED), 260 261 RX_HANDLER(BA_WINDOW_STATUS_NOTIFICATION_ID, 262 iwl_mvm_window_status_notif, RX_HANDLER_SYNC), 263 264 RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif, 265 RX_HANDLER_SYNC), 266 RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc, 267 RX_HANDLER_ASYNC_LOCKED), 268 269 RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, RX_HANDLER_SYNC), 270 271 RX_HANDLER(SCAN_ITERATION_COMPLETE, 272 iwl_mvm_rx_lmac_scan_iter_complete_notif, RX_HANDLER_SYNC), 273 RX_HANDLER(SCAN_OFFLOAD_COMPLETE, 274 iwl_mvm_rx_lmac_scan_complete_notif, 275 RX_HANDLER_ASYNC_LOCKED), 276 RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_match_found, 277 RX_HANDLER_SYNC), 278 RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif, 279 RX_HANDLER_ASYNC_LOCKED), 280 RX_HANDLER(SCAN_ITERATION_COMPLETE_UMAC, 281 iwl_mvm_rx_umac_scan_iter_complete_notif, RX_HANDLER_SYNC), 282 283 RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif, 284 RX_HANDLER_SYNC), 285 286 RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif, 287 RX_HANDLER_SYNC), 288 289 RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, RX_HANDLER_SYNC), 290 RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION, 291 iwl_mvm_power_uapsd_misbehaving_ap_notif, RX_HANDLER_SYNC), 292 RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif, 293 RX_HANDLER_ASYNC_LOCKED), 294 RX_HANDLER_GRP(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE, 295 iwl_mvm_temp_notif, RX_HANDLER_ASYNC_UNLOCKED), 296 RX_HANDLER_GRP(PHY_OPS_GROUP, CT_KILL_NOTIFICATION, 297 iwl_mvm_ct_kill_notif, RX_HANDLER_SYNC), 298 299 RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif, 300 RX_HANDLER_ASYNC_LOCKED), 301 RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif, 302 RX_HANDLER_SYNC), 303 RX_HANDLER(TOF_NOTIFICATION, iwl_mvm_tof_resp_handler, 304 RX_HANDLER_ASYNC_LOCKED), 305 RX_HANDLER_GRP(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF, 306 iwl_mvm_rx_stored_beacon_notif, RX_HANDLER_SYNC), 307 RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF, 308 iwl_mvm_mu_mimo_grp_notif, RX_HANDLER_SYNC), 309 }; 310 #undef RX_HANDLER 311 #undef RX_HANDLER_GRP 312 313 /* Please keep this array *SORTED* by hex value. 314 * Access is done through binary search 315 */ 316 static const struct iwl_hcmd_names iwl_mvm_legacy_names[] = { 317 HCMD_NAME(MVM_ALIVE), 318 HCMD_NAME(REPLY_ERROR), 319 HCMD_NAME(ECHO_CMD), 320 HCMD_NAME(INIT_COMPLETE_NOTIF), 321 HCMD_NAME(PHY_CONTEXT_CMD), 322 HCMD_NAME(DBG_CFG), 323 HCMD_NAME(ANTENNA_COUPLING_NOTIFICATION), 324 HCMD_NAME(SCAN_CFG_CMD), 325 HCMD_NAME(SCAN_REQ_UMAC), 326 HCMD_NAME(SCAN_ABORT_UMAC), 327 HCMD_NAME(SCAN_COMPLETE_UMAC), 328 HCMD_NAME(TOF_CMD), 329 HCMD_NAME(TOF_NOTIFICATION), 330 HCMD_NAME(BA_WINDOW_STATUS_NOTIFICATION_ID), 331 HCMD_NAME(ADD_STA_KEY), 332 HCMD_NAME(ADD_STA), 333 HCMD_NAME(REMOVE_STA), 334 HCMD_NAME(FW_GET_ITEM_CMD), 335 HCMD_NAME(TX_CMD), 336 HCMD_NAME(SCD_QUEUE_CFG), 337 HCMD_NAME(TXPATH_FLUSH), 338 HCMD_NAME(MGMT_MCAST_KEY), 339 HCMD_NAME(WEP_KEY), 340 HCMD_NAME(SHARED_MEM_CFG), 341 HCMD_NAME(TDLS_CHANNEL_SWITCH_CMD), 342 HCMD_NAME(MAC_CONTEXT_CMD), 343 HCMD_NAME(TIME_EVENT_CMD), 344 HCMD_NAME(TIME_EVENT_NOTIFICATION), 345 HCMD_NAME(BINDING_CONTEXT_CMD), 346 HCMD_NAME(TIME_QUOTA_CMD), 347 HCMD_NAME(NON_QOS_TX_COUNTER_CMD), 348 HCMD_NAME(LQ_CMD), 349 HCMD_NAME(FW_PAGING_BLOCK_CMD), 350 HCMD_NAME(SCAN_OFFLOAD_REQUEST_CMD), 351 HCMD_NAME(SCAN_OFFLOAD_ABORT_CMD), 352 HCMD_NAME(HOT_SPOT_CMD), 353 HCMD_NAME(SCAN_OFFLOAD_PROFILES_QUERY_CMD), 354 HCMD_NAME(SCAN_OFFLOAD_HOTSPOTS_CONFIG_CMD), 355 HCMD_NAME(SCAN_OFFLOAD_HOTSPOTS_QUERY_CMD), 356 HCMD_NAME(BT_COEX_UPDATE_SW_BOOST), 357 HCMD_NAME(BT_COEX_UPDATE_CORUN_LUT), 358 HCMD_NAME(BT_COEX_UPDATE_REDUCED_TXP), 359 HCMD_NAME(BT_COEX_CI), 360 HCMD_NAME(PHY_CONFIGURATION_CMD), 361 HCMD_NAME(CALIB_RES_NOTIF_PHY_DB), 362 HCMD_NAME(PHY_DB_CMD), 363 HCMD_NAME(SCAN_OFFLOAD_COMPLETE), 364 HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_CMD), 365 HCMD_NAME(SCAN_OFFLOAD_CONFIG_CMD), 366 HCMD_NAME(POWER_TABLE_CMD), 367 HCMD_NAME(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION), 368 HCMD_NAME(REPLY_THERMAL_MNG_BACKOFF), 369 HCMD_NAME(DC2DC_CONFIG_CMD), 370 HCMD_NAME(NVM_ACCESS_CMD), 371 HCMD_NAME(SET_CALIB_DEFAULT_CMD), 372 HCMD_NAME(BEACON_NOTIFICATION), 373 HCMD_NAME(BEACON_TEMPLATE_CMD), 374 HCMD_NAME(TX_ANT_CONFIGURATION_CMD), 375 HCMD_NAME(BT_CONFIG), 376 HCMD_NAME(STATISTICS_CMD), 377 HCMD_NAME(STATISTICS_NOTIFICATION), 378 HCMD_NAME(EOSP_NOTIFICATION), 379 HCMD_NAME(REDUCE_TX_POWER_CMD), 380 HCMD_NAME(CARD_STATE_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_COEX_PRIO_TABLE), 396 HCMD_NAME(BT_COEX_PROT_ENV), 397 HCMD_NAME(BT_PROFILE_NOTIFICATION), 398 HCMD_NAME(BCAST_FILTER_CMD), 399 HCMD_NAME(MCAST_FILTER_CMD), 400 HCMD_NAME(REPLY_SF_CFG_CMD), 401 HCMD_NAME(REPLY_BEACON_FILTERING_CMD), 402 HCMD_NAME(D3_CONFIG_CMD), 403 HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD), 404 HCMD_NAME(OFFLOADS_QUERY_CMD), 405 HCMD_NAME(REMOTE_WAKE_CONFIG_CMD), 406 HCMD_NAME(MATCH_FOUND_NOTIFICATION), 407 HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER), 408 HCMD_NAME(DTS_MEASUREMENT_NOTIFICATION), 409 HCMD_NAME(WOWLAN_PATTERNS), 410 HCMD_NAME(WOWLAN_CONFIGURATION), 411 HCMD_NAME(WOWLAN_TSC_RSC_PARAM), 412 HCMD_NAME(WOWLAN_TKIP_PARAM), 413 HCMD_NAME(WOWLAN_KEK_KCK_MATERIAL), 414 HCMD_NAME(WOWLAN_GET_STATUSES), 415 HCMD_NAME(WOWLAN_TX_POWER_PER_DB), 416 HCMD_NAME(SCAN_ITERATION_COMPLETE), 417 HCMD_NAME(D0I3_END_CMD), 418 HCMD_NAME(LTR_CONFIG), 419 HCMD_NAME(REPLY_DEBUG_CMD), 420 }; 421 422 /* Please keep this array *SORTED* by hex value. 423 * Access is done through binary search 424 */ 425 static const struct iwl_hcmd_names iwl_mvm_system_names[] = { 426 HCMD_NAME(SHARED_MEM_CFG_CMD), 427 }; 428 429 /* Please keep this array *SORTED* by hex value. 430 * Access is done through binary search 431 */ 432 static const struct iwl_hcmd_names iwl_mvm_mac_conf_names[] = { 433 HCMD_NAME(LINK_QUALITY_MEASUREMENT_CMD), 434 HCMD_NAME(LINK_QUALITY_MEASUREMENT_COMPLETE_NOTIF), 435 HCMD_NAME(CHANNEL_SWITCH_NOA_NOTIF), 436 }; 437 438 /* Please keep this array *SORTED* by hex value. 439 * Access is done through binary search 440 */ 441 static const struct iwl_hcmd_names iwl_mvm_phy_names[] = { 442 HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE), 443 HCMD_NAME(CTDP_CONFIG_CMD), 444 HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD), 445 HCMD_NAME(CT_KILL_NOTIFICATION), 446 HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE), 447 }; 448 449 /* Please keep this array *SORTED* by hex value. 450 * Access is done through binary search 451 */ 452 static const struct iwl_hcmd_names iwl_mvm_data_path_names[] = { 453 HCMD_NAME(UPDATE_MU_GROUPS_CMD), 454 HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD), 455 HCMD_NAME(MU_GROUP_MGMT_NOTIF), 456 HCMD_NAME(RX_QUEUES_NOTIFICATION), 457 }; 458 459 /* Please keep this array *SORTED* by hex value. 460 * Access is done through binary search 461 */ 462 static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = { 463 HCMD_NAME(STORED_BEACON_NTF), 464 }; 465 466 static const struct iwl_hcmd_arr iwl_mvm_groups[] = { 467 [LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names), 468 [LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names), 469 [SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names), 470 [MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names), 471 [PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names), 472 [DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names), 473 [PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names), 474 }; 475 476 /* this forward declaration can avoid to export the function */ 477 static void iwl_mvm_async_handlers_wk(struct work_struct *wk); 478 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk); 479 480 static u32 calc_min_backoff(struct iwl_trans *trans, const struct iwl_cfg *cfg) 481 { 482 const struct iwl_pwr_tx_backoff *pwr_tx_backoff = cfg->pwr_tx_backoffs; 483 484 if (!pwr_tx_backoff) 485 return 0; 486 487 while (pwr_tx_backoff->pwr) { 488 if (trans->dflt_pwr_limit >= pwr_tx_backoff->pwr) 489 return pwr_tx_backoff->backoff; 490 491 pwr_tx_backoff++; 492 } 493 494 return 0; 495 } 496 497 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work); 498 499 static void iwl_mvm_tx_unblock_dwork(struct work_struct *work) 500 { 501 struct iwl_mvm *mvm = 502 container_of(work, struct iwl_mvm, cs_tx_unblock_dwork.work); 503 struct ieee80211_vif *tx_blocked_vif; 504 struct iwl_mvm_vif *mvmvif; 505 506 mutex_lock(&mvm->mutex); 507 508 tx_blocked_vif = 509 rcu_dereference_protected(mvm->csa_tx_blocked_vif, 510 lockdep_is_held(&mvm->mutex)); 511 512 if (!tx_blocked_vif) 513 goto unlock; 514 515 mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif); 516 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false); 517 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); 518 unlock: 519 mutex_unlock(&mvm->mutex); 520 } 521 522 static struct iwl_op_mode * 523 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg, 524 const struct iwl_fw *fw, struct dentry *dbgfs_dir) 525 { 526 struct ieee80211_hw *hw; 527 struct iwl_op_mode *op_mode; 528 struct iwl_mvm *mvm; 529 struct iwl_trans_config trans_cfg = {}; 530 static const u8 no_reclaim_cmds[] = { 531 TX_CMD, 532 }; 533 int err, scan_size; 534 u32 min_backoff; 535 536 /* 537 * We use IWL_MVM_STATION_COUNT to check the validity of the station 538 * index all over the driver - check that its value corresponds to the 539 * array size. 540 */ 541 BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT); 542 543 /******************************** 544 * 1. Allocating and configuring HW data 545 ********************************/ 546 hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) + 547 sizeof(struct iwl_mvm), 548 &iwl_mvm_hw_ops); 549 if (!hw) 550 return NULL; 551 552 if (cfg->max_rx_agg_size) 553 hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size; 554 555 if (cfg->max_tx_agg_size) 556 hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size; 557 558 op_mode = hw->priv; 559 560 mvm = IWL_OP_MODE_GET_MVM(op_mode); 561 mvm->dev = trans->dev; 562 mvm->trans = trans; 563 mvm->cfg = cfg; 564 mvm->fw = fw; 565 mvm->hw = hw; 566 567 if (iwl_mvm_has_new_rx_api(mvm)) { 568 op_mode->ops = &iwl_mvm_ops_mq; 569 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_desc); 570 } else { 571 op_mode->ops = &iwl_mvm_ops; 572 trans->rx_mpdu_cmd_hdr_size = 573 sizeof(struct iwl_rx_mpdu_res_start); 574 575 if (WARN_ON(trans->num_rx_queues > 1)) 576 goto out_free; 577 } 578 579 mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0; 580 581 if (!iwl_mvm_is_dqa_supported(mvm)) { 582 mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1; 583 584 if (mvm->cfg->base_params->num_of_queues == 16) { 585 mvm->aux_queue = 11; 586 mvm->first_agg_queue = 12; 587 } else { 588 mvm->aux_queue = 15; 589 mvm->first_agg_queue = 16; 590 } 591 } else { 592 mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE; 593 mvm->first_agg_queue = IWL_MVM_DQA_MIN_DATA_QUEUE; 594 mvm->last_agg_queue = IWL_MVM_DQA_MAX_DATA_QUEUE; 595 } 596 mvm->sf_state = SF_UNINIT; 597 mvm->cur_ucode = IWL_UCODE_INIT; 598 mvm->drop_bcn_ap_mode = true; 599 600 mutex_init(&mvm->mutex); 601 mutex_init(&mvm->d0i3_suspend_mutex); 602 spin_lock_init(&mvm->async_handlers_lock); 603 INIT_LIST_HEAD(&mvm->time_event_list); 604 INIT_LIST_HEAD(&mvm->aux_roc_te_list); 605 INIT_LIST_HEAD(&mvm->async_handlers_list); 606 spin_lock_init(&mvm->time_event_lock); 607 spin_lock_init(&mvm->queue_info_lock); 608 609 INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk); 610 INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk); 611 INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk); 612 INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work); 613 INIT_DELAYED_WORK(&mvm->fw_dump_wk, iwl_mvm_fw_error_dump_wk); 614 INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work); 615 INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk); 616 INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk); 617 618 spin_lock_init(&mvm->d0i3_tx_lock); 619 spin_lock_init(&mvm->refs_lock); 620 skb_queue_head_init(&mvm->d0i3_tx); 621 init_waitqueue_head(&mvm->d0i3_exit_waitq); 622 623 atomic_set(&mvm->queue_sync_counter, 0); 624 625 SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev); 626 627 INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork); 628 629 /* 630 * Populate the state variables that the transport layer needs 631 * to know about. 632 */ 633 trans_cfg.op_mode = op_mode; 634 trans_cfg.no_reclaim_cmds = no_reclaim_cmds; 635 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds); 636 switch (iwlwifi_mod_params.amsdu_size) { 637 case IWL_AMSDU_DEF: 638 case IWL_AMSDU_4K: 639 trans_cfg.rx_buf_size = IWL_AMSDU_4K; 640 break; 641 case IWL_AMSDU_8K: 642 trans_cfg.rx_buf_size = IWL_AMSDU_8K; 643 break; 644 case IWL_AMSDU_12K: 645 trans_cfg.rx_buf_size = IWL_AMSDU_12K; 646 break; 647 default: 648 pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME, 649 iwlwifi_mod_params.amsdu_size); 650 trans_cfg.rx_buf_size = IWL_AMSDU_4K; 651 } 652 653 /* the hardware splits the A-MSDU */ 654 if (mvm->cfg->mq_rx_supported) 655 trans_cfg.rx_buf_size = IWL_AMSDU_4K; 656 657 trans->wide_cmd_header = true; 658 trans_cfg.bc_table_dword = true; 659 660 trans_cfg.command_groups = iwl_mvm_groups; 661 trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups); 662 663 if (iwl_mvm_is_dqa_supported(mvm)) 664 trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE; 665 else 666 trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE; 667 trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD; 668 trans_cfg.scd_set_active = true; 669 670 trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info, 671 driver_data[2]); 672 673 trans_cfg.sdio_adma_addr = fw->sdio_adma_addr; 674 trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD; 675 676 /* Set a short watchdog for the command queue */ 677 trans_cfg.cmd_q_wdg_timeout = 678 iwl_mvm_get_wd_timeout(mvm, NULL, false, true); 679 680 snprintf(mvm->hw->wiphy->fw_version, 681 sizeof(mvm->hw->wiphy->fw_version), 682 "%s", fw->fw_version); 683 684 /* Configure transport layer */ 685 iwl_trans_configure(mvm->trans, &trans_cfg); 686 687 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD; 688 trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv; 689 trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num; 690 memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv, 691 sizeof(trans->dbg_conf_tlv)); 692 trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv; 693 694 /* set up notification wait support */ 695 iwl_notification_wait_init(&mvm->notif_wait); 696 697 /* Init phy db */ 698 mvm->phy_db = iwl_phy_db_init(trans); 699 if (!mvm->phy_db) { 700 IWL_ERR(mvm, "Cannot init phy_db\n"); 701 goto out_free; 702 } 703 704 IWL_INFO(mvm, "Detected %s, REV=0x%X\n", 705 mvm->cfg->name, mvm->trans->hw_rev); 706 707 if (iwlwifi_mod_params.nvm_file) 708 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file; 709 else 710 IWL_DEBUG_EEPROM(mvm->trans->dev, 711 "working without external nvm file\n"); 712 713 err = iwl_trans_start_hw(mvm->trans); 714 if (err) 715 goto out_free; 716 717 mutex_lock(&mvm->mutex); 718 iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE); 719 err = iwl_run_init_mvm_ucode(mvm, true); 720 if (!err || !iwlmvm_mod_params.init_dbg) 721 iwl_mvm_stop_device(mvm); 722 iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE); 723 mutex_unlock(&mvm->mutex); 724 /* returns 0 if successful, 1 if success but in rfkill */ 725 if (err < 0 && !iwlmvm_mod_params.init_dbg) { 726 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err); 727 goto out_free; 728 } 729 730 scan_size = iwl_mvm_scan_size(mvm); 731 732 mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL); 733 if (!mvm->scan_cmd) 734 goto out_free; 735 736 /* Set EBS as successful as long as not stated otherwise by the FW. */ 737 mvm->last_ebs_successful = true; 738 739 err = iwl_mvm_mac_setup_register(mvm); 740 if (err) 741 goto out_free; 742 743 min_backoff = calc_min_backoff(trans, cfg); 744 iwl_mvm_thermal_initialize(mvm, min_backoff); 745 746 err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir); 747 if (err) 748 goto out_unregister; 749 750 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx)); 751 752 /* The transport always starts with a taken reference, we can 753 * release it now if d0i3 is supported */ 754 if (iwl_mvm_is_d0i3_supported(mvm)) 755 iwl_trans_unref(mvm->trans); 756 757 iwl_mvm_tof_init(mvm); 758 759 return op_mode; 760 761 out_unregister: 762 ieee80211_unregister_hw(mvm->hw); 763 iwl_mvm_leds_exit(mvm); 764 iwl_mvm_thermal_exit(mvm); 765 out_free: 766 flush_delayed_work(&mvm->fw_dump_wk); 767 iwl_phy_db_free(mvm->phy_db); 768 kfree(mvm->scan_cmd); 769 iwl_trans_op_mode_leave(trans); 770 771 ieee80211_free_hw(mvm->hw); 772 return NULL; 773 } 774 775 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode) 776 { 777 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 778 int i; 779 780 /* If d0i3 is supported, we have released the reference that 781 * the transport started with, so we should take it back now 782 * that we are leaving. 783 */ 784 if (iwl_mvm_is_d0i3_supported(mvm)) 785 iwl_trans_ref(mvm->trans); 786 787 iwl_mvm_leds_exit(mvm); 788 789 iwl_mvm_thermal_exit(mvm); 790 791 ieee80211_unregister_hw(mvm->hw); 792 793 kfree(mvm->scan_cmd); 794 kfree(mvm->mcast_filter_cmd); 795 mvm->mcast_filter_cmd = NULL; 796 797 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS) 798 kfree(mvm->d3_resume_sram); 799 #endif 800 801 iwl_trans_op_mode_leave(mvm->trans); 802 803 iwl_phy_db_free(mvm->phy_db); 804 mvm->phy_db = NULL; 805 806 iwl_free_nvm_data(mvm->nvm_data); 807 for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++) 808 kfree(mvm->nvm_sections[i].data); 809 810 iwl_mvm_tof_clean(mvm); 811 812 mutex_destroy(&mvm->mutex); 813 mutex_destroy(&mvm->d0i3_suspend_mutex); 814 815 ieee80211_free_hw(mvm->hw); 816 } 817 818 struct iwl_async_handler_entry { 819 struct list_head list; 820 struct iwl_rx_cmd_buffer rxb; 821 enum iwl_rx_handler_context context; 822 void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb); 823 }; 824 825 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm) 826 { 827 struct iwl_async_handler_entry *entry, *tmp; 828 829 spin_lock_bh(&mvm->async_handlers_lock); 830 list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) { 831 iwl_free_rxb(&entry->rxb); 832 list_del(&entry->list); 833 kfree(entry); 834 } 835 spin_unlock_bh(&mvm->async_handlers_lock); 836 } 837 838 static void iwl_mvm_async_handlers_wk(struct work_struct *wk) 839 { 840 struct iwl_mvm *mvm = 841 container_of(wk, struct iwl_mvm, async_handlers_wk); 842 struct iwl_async_handler_entry *entry, *tmp; 843 LIST_HEAD(local_list); 844 845 /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */ 846 847 /* 848 * Sync with Rx path with a lock. Remove all the entries from this list, 849 * add them to a local one (lock free), and then handle them. 850 */ 851 spin_lock_bh(&mvm->async_handlers_lock); 852 list_splice_init(&mvm->async_handlers_list, &local_list); 853 spin_unlock_bh(&mvm->async_handlers_lock); 854 855 list_for_each_entry_safe(entry, tmp, &local_list, list) { 856 if (entry->context == RX_HANDLER_ASYNC_LOCKED) 857 mutex_lock(&mvm->mutex); 858 entry->fn(mvm, &entry->rxb); 859 iwl_free_rxb(&entry->rxb); 860 list_del(&entry->list); 861 if (entry->context == RX_HANDLER_ASYNC_LOCKED) 862 mutex_unlock(&mvm->mutex); 863 kfree(entry); 864 } 865 } 866 867 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm, 868 struct iwl_rx_packet *pkt) 869 { 870 struct iwl_fw_dbg_trigger_tlv *trig; 871 struct iwl_fw_dbg_trigger_cmd *cmds_trig; 872 int i; 873 874 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF)) 875 return; 876 877 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF); 878 cmds_trig = (void *)trig->data; 879 880 if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig)) 881 return; 882 883 for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) { 884 /* don't collect on CMD 0 */ 885 if (!cmds_trig->cmds[i].cmd_id) 886 break; 887 888 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd || 889 cmds_trig->cmds[i].group_id != pkt->hdr.group_id) 890 continue; 891 892 iwl_mvm_fw_dbg_collect_trig(mvm, trig, 893 "CMD 0x%02x.%02x received", 894 pkt->hdr.group_id, pkt->hdr.cmd); 895 break; 896 } 897 } 898 899 static void iwl_mvm_rx_common(struct iwl_mvm *mvm, 900 struct iwl_rx_cmd_buffer *rxb, 901 struct iwl_rx_packet *pkt) 902 { 903 int i; 904 905 iwl_mvm_rx_check_trigger(mvm, pkt); 906 907 /* 908 * Do the notification wait before RX handlers so 909 * even if the RX handler consumes the RXB we have 910 * access to it in the notification wait entry. 911 */ 912 iwl_notification_wait_notify(&mvm->notif_wait, pkt); 913 914 for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) { 915 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i]; 916 struct iwl_async_handler_entry *entry; 917 918 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) 919 continue; 920 921 if (rx_h->context == RX_HANDLER_SYNC) { 922 rx_h->fn(mvm, rxb); 923 return; 924 } 925 926 entry = kzalloc(sizeof(*entry), GFP_ATOMIC); 927 /* we can't do much... */ 928 if (!entry) 929 return; 930 931 entry->rxb._page = rxb_steal_page(rxb); 932 entry->rxb._offset = rxb->_offset; 933 entry->rxb._rx_page_order = rxb->_rx_page_order; 934 entry->fn = rx_h->fn; 935 entry->context = rx_h->context; 936 spin_lock(&mvm->async_handlers_lock); 937 list_add_tail(&entry->list, &mvm->async_handlers_list); 938 spin_unlock(&mvm->async_handlers_lock); 939 schedule_work(&mvm->async_handlers_wk); 940 break; 941 } 942 } 943 944 static void iwl_mvm_rx(struct iwl_op_mode *op_mode, 945 struct napi_struct *napi, 946 struct iwl_rx_cmd_buffer *rxb) 947 { 948 struct iwl_rx_packet *pkt = rxb_addr(rxb); 949 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 950 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); 951 952 if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))) 953 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb); 954 else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD)) 955 iwl_mvm_rx_rx_phy_cmd(mvm, rxb); 956 else 957 iwl_mvm_rx_common(mvm, rxb, pkt); 958 } 959 960 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode, 961 struct napi_struct *napi, 962 struct iwl_rx_cmd_buffer *rxb) 963 { 964 struct iwl_rx_packet *pkt = rxb_addr(rxb); 965 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 966 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); 967 968 if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))) 969 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0); 970 else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP, 971 RX_QUEUES_NOTIFICATION))) 972 iwl_mvm_rx_queue_notif(mvm, rxb, 0); 973 else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)) 974 iwl_mvm_rx_frame_release(mvm, napi, rxb, 0); 975 else 976 iwl_mvm_rx_common(mvm, rxb, pkt); 977 } 978 979 void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq) 980 { 981 int q; 982 983 if (WARN_ON_ONCE(!mq)) 984 return; 985 986 for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) { 987 if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) { 988 IWL_DEBUG_TX_QUEUES(mvm, 989 "mac80211 %d already stopped\n", q); 990 continue; 991 } 992 993 ieee80211_stop_queue(mvm->hw, q); 994 } 995 } 996 997 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode, 998 const struct iwl_device_cmd *cmd) 999 { 1000 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1001 1002 /* 1003 * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA 1004 * commands that need to block the Tx queues. 1005 */ 1006 iwl_trans_block_txq_ptrs(mvm->trans, false); 1007 } 1008 1009 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue) 1010 { 1011 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1012 unsigned long mq; 1013 1014 spin_lock_bh(&mvm->queue_info_lock); 1015 mq = mvm->queue_info[hw_queue].hw_queue_to_mac80211; 1016 spin_unlock_bh(&mvm->queue_info_lock); 1017 1018 iwl_mvm_stop_mac_queues(mvm, mq); 1019 } 1020 1021 void iwl_mvm_start_mac_queues(struct iwl_mvm *mvm, unsigned long mq) 1022 { 1023 int q; 1024 1025 if (WARN_ON_ONCE(!mq)) 1026 return; 1027 1028 for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) { 1029 if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) { 1030 IWL_DEBUG_TX_QUEUES(mvm, 1031 "mac80211 %d still stopped\n", q); 1032 continue; 1033 } 1034 1035 ieee80211_wake_queue(mvm->hw, q); 1036 } 1037 } 1038 1039 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue) 1040 { 1041 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1042 unsigned long mq; 1043 1044 spin_lock_bh(&mvm->queue_info_lock); 1045 mq = mvm->queue_info[hw_queue].hw_queue_to_mac80211; 1046 spin_unlock_bh(&mvm->queue_info_lock); 1047 1048 iwl_mvm_start_mac_queues(mvm, mq); 1049 } 1050 1051 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state) 1052 { 1053 if (state) 1054 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); 1055 else 1056 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); 1057 1058 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm)); 1059 } 1060 1061 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state) 1062 { 1063 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1064 bool calibrating = ACCESS_ONCE(mvm->calibrating); 1065 1066 if (state) 1067 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); 1068 else 1069 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); 1070 1071 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm)); 1072 1073 /* iwl_run_init_mvm_ucode is waiting for results, abort it */ 1074 if (calibrating) 1075 iwl_abort_notification_waits(&mvm->notif_wait); 1076 1077 /* 1078 * Stop the device if we run OPERATIONAL firmware or if we are in the 1079 * middle of the calibrations. 1080 */ 1081 return state && (mvm->cur_ucode != IWL_UCODE_INIT || calibrating); 1082 } 1083 1084 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb) 1085 { 1086 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1087 struct ieee80211_tx_info *info; 1088 1089 info = IEEE80211_SKB_CB(skb); 1090 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]); 1091 ieee80211_free_txskb(mvm->hw, skb); 1092 } 1093 1094 struct iwl_mvm_reprobe { 1095 struct device *dev; 1096 struct work_struct work; 1097 }; 1098 1099 static void iwl_mvm_reprobe_wk(struct work_struct *wk) 1100 { 1101 struct iwl_mvm_reprobe *reprobe; 1102 1103 reprobe = container_of(wk, struct iwl_mvm_reprobe, work); 1104 if (device_reprobe(reprobe->dev)) 1105 dev_err(reprobe->dev, "reprobe failed!\n"); 1106 kfree(reprobe); 1107 module_put(THIS_MODULE); 1108 } 1109 1110 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work) 1111 { 1112 struct iwl_mvm *mvm = 1113 container_of(work, struct iwl_mvm, fw_dump_wk.work); 1114 1115 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT)) 1116 return; 1117 1118 mutex_lock(&mvm->mutex); 1119 1120 /* stop recording */ 1121 if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000) { 1122 iwl_set_bits_prph(mvm->trans, MON_BUFF_SAMPLE_CTL, 0x100); 1123 } else { 1124 iwl_write_prph(mvm->trans, DBGC_IN_SAMPLE, 0); 1125 /* wait before we collect the data till the DBGC stop */ 1126 udelay(100); 1127 } 1128 1129 iwl_mvm_fw_error_dump(mvm); 1130 1131 /* start recording again if the firmware is not crashed */ 1132 WARN_ON_ONCE((!test_bit(STATUS_FW_ERROR, &mvm->trans->status)) && 1133 mvm->fw->dbg_dest_tlv && 1134 iwl_mvm_start_fw_dbg_conf(mvm, mvm->fw_dbg_conf)); 1135 1136 mutex_unlock(&mvm->mutex); 1137 1138 iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT); 1139 } 1140 1141 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error) 1142 { 1143 iwl_abort_notification_waits(&mvm->notif_wait); 1144 1145 /* 1146 * This is a bit racy, but worst case we tell mac80211 about 1147 * a stopped/aborted scan when that was already done which 1148 * is not a problem. It is necessary to abort any os scan 1149 * here because mac80211 requires having the scan cleared 1150 * before restarting. 1151 * We'll reset the scan_status to NONE in restart cleanup in 1152 * the next start() call from mac80211. If restart isn't called 1153 * (no fw restart) scan status will stay busy. 1154 */ 1155 iwl_mvm_report_scan_aborted(mvm); 1156 1157 /* 1158 * If we're restarting already, don't cycle restarts. 1159 * If INIT fw asserted, it will likely fail again. 1160 * If WoWLAN fw asserted, don't restart either, mac80211 1161 * can't recover this since we're already half suspended. 1162 */ 1163 if (!mvm->restart_fw && fw_error) { 1164 iwl_mvm_fw_dbg_collect_desc(mvm, &iwl_mvm_dump_desc_assert, 1165 NULL); 1166 } else if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART, 1167 &mvm->status)) { 1168 struct iwl_mvm_reprobe *reprobe; 1169 1170 IWL_ERR(mvm, 1171 "Firmware error during reconfiguration - reprobe!\n"); 1172 1173 /* 1174 * get a module reference to avoid doing this while unloading 1175 * anyway and to avoid scheduling a work with code that's 1176 * being removed. 1177 */ 1178 if (!try_module_get(THIS_MODULE)) { 1179 IWL_ERR(mvm, "Module is being unloaded - abort\n"); 1180 return; 1181 } 1182 1183 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC); 1184 if (!reprobe) { 1185 module_put(THIS_MODULE); 1186 return; 1187 } 1188 reprobe->dev = mvm->trans->dev; 1189 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk); 1190 schedule_work(&reprobe->work); 1191 } else if (mvm->cur_ucode == IWL_UCODE_REGULAR) { 1192 /* don't let the transport/FW power down */ 1193 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); 1194 1195 if (fw_error && mvm->restart_fw > 0) 1196 mvm->restart_fw--; 1197 ieee80211_restart_hw(mvm->hw); 1198 } 1199 } 1200 1201 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode) 1202 { 1203 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1204 1205 iwl_mvm_dump_nic_error_log(mvm); 1206 1207 iwl_mvm_nic_restart(mvm, true); 1208 } 1209 1210 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode) 1211 { 1212 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1213 1214 WARN_ON(1); 1215 iwl_mvm_nic_restart(mvm, true); 1216 } 1217 1218 struct iwl_d0i3_iter_data { 1219 struct iwl_mvm *mvm; 1220 struct ieee80211_vif *connected_vif; 1221 u8 ap_sta_id; 1222 u8 vif_count; 1223 u8 offloading_tid; 1224 bool disable_offloading; 1225 }; 1226 1227 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm, 1228 struct ieee80211_vif *vif, 1229 struct iwl_d0i3_iter_data *iter_data) 1230 { 1231 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1232 struct iwl_mvm_sta *mvmsta; 1233 u32 available_tids = 0; 1234 u8 tid; 1235 1236 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION || 1237 mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT)) 1238 return false; 1239 1240 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); 1241 if (!mvmsta) 1242 return false; 1243 1244 spin_lock_bh(&mvmsta->lock); 1245 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1246 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 1247 1248 /* 1249 * in case of pending tx packets, don't use this tid 1250 * for offloading in order to prevent reuse of the same 1251 * qos seq counters. 1252 */ 1253 if (iwl_mvm_tid_queued(tid_data)) 1254 continue; 1255 1256 if (tid_data->state != IWL_AGG_OFF) 1257 continue; 1258 1259 available_tids |= BIT(tid); 1260 } 1261 spin_unlock_bh(&mvmsta->lock); 1262 1263 /* 1264 * disallow protocol offloading if we have no available tid 1265 * (with no pending frames and no active aggregation, 1266 * as we don't handle "holes" properly - the scheduler needs the 1267 * frame's seq number and TFD index to match) 1268 */ 1269 if (!available_tids) 1270 return true; 1271 1272 /* for simplicity, just use the first available tid */ 1273 iter_data->offloading_tid = ffs(available_tids) - 1; 1274 return false; 1275 } 1276 1277 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac, 1278 struct ieee80211_vif *vif) 1279 { 1280 struct iwl_d0i3_iter_data *data = _data; 1281 struct iwl_mvm *mvm = data->mvm; 1282 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1283 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; 1284 1285 IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr); 1286 if (vif->type != NL80211_IFTYPE_STATION || 1287 !vif->bss_conf.assoc) 1288 return; 1289 1290 /* 1291 * in case of pending tx packets or active aggregations, 1292 * avoid offloading features in order to prevent reuse of 1293 * the same qos seq counters. 1294 */ 1295 if (iwl_mvm_disallow_offloading(mvm, vif, data)) 1296 data->disable_offloading = true; 1297 1298 iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags); 1299 iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading, 1300 false, flags); 1301 1302 /* 1303 * on init/association, mvm already configures POWER_TABLE_CMD 1304 * and REPLY_MCAST_FILTER_CMD, so currently don't 1305 * reconfigure them (we might want to use different 1306 * params later on, though). 1307 */ 1308 data->ap_sta_id = mvmvif->ap_sta_id; 1309 data->vif_count++; 1310 1311 /* 1312 * no new commands can be sent at this stage, so it's safe 1313 * to save the vif pointer during d0i3 entrance. 1314 */ 1315 data->connected_vif = vif; 1316 } 1317 1318 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm, 1319 struct iwl_wowlan_config_cmd *cmd, 1320 struct iwl_d0i3_iter_data *iter_data) 1321 { 1322 struct ieee80211_sta *ap_sta; 1323 struct iwl_mvm_sta *mvm_ap_sta; 1324 1325 if (iter_data->ap_sta_id == IWL_MVM_STATION_COUNT) 1326 return; 1327 1328 rcu_read_lock(); 1329 1330 ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]); 1331 if (IS_ERR_OR_NULL(ap_sta)) 1332 goto out; 1333 1334 mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta); 1335 cmd->is_11n_connection = ap_sta->ht_cap.ht_supported; 1336 cmd->offloading_tid = iter_data->offloading_tid; 1337 cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING | 1338 ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON; 1339 /* 1340 * The d0i3 uCode takes care of the nonqos counters, 1341 * so configure only the qos seq ones. 1342 */ 1343 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd); 1344 out: 1345 rcu_read_unlock(); 1346 } 1347 1348 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode) 1349 { 1350 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1351 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; 1352 int ret; 1353 struct iwl_d0i3_iter_data d0i3_iter_data = { 1354 .mvm = mvm, 1355 }; 1356 struct iwl_wowlan_config_cmd wowlan_config_cmd = { 1357 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME | 1358 IWL_WOWLAN_WAKEUP_BEACON_MISS | 1359 IWL_WOWLAN_WAKEUP_LINK_CHANGE), 1360 }; 1361 struct iwl_d3_manager_config d3_cfg_cmd = { 1362 .min_sleep_time = cpu_to_le32(1000), 1363 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR), 1364 }; 1365 1366 IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n"); 1367 1368 if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR)) 1369 return -EINVAL; 1370 1371 set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1372 1373 /* 1374 * iwl_mvm_ref_sync takes a reference before checking the flag. 1375 * so by checking there is no held reference we prevent a state 1376 * in which iwl_mvm_ref_sync continues successfully while we 1377 * configure the firmware to enter d0i3 1378 */ 1379 if (iwl_mvm_ref_taken(mvm)) { 1380 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n"); 1381 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1382 wake_up(&mvm->d0i3_exit_waitq); 1383 return 1; 1384 } 1385 1386 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1387 IEEE80211_IFACE_ITER_NORMAL, 1388 iwl_mvm_enter_d0i3_iterator, 1389 &d0i3_iter_data); 1390 if (d0i3_iter_data.vif_count == 1) { 1391 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id; 1392 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading; 1393 } else { 1394 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1); 1395 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; 1396 mvm->d0i3_offloading = false; 1397 } 1398 1399 /* make sure we have no running tx while configuring the seqno */ 1400 synchronize_net(); 1401 1402 /* Flush the hw queues, in case something got queued during entry */ 1403 ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm), flags); 1404 if (ret) 1405 return ret; 1406 1407 /* configure wowlan configuration only if needed */ 1408 if (mvm->d0i3_ap_sta_id != IWL_MVM_STATION_COUNT) { 1409 /* wake on beacons only if beacon storing isn't supported */ 1410 if (!fw_has_capa(&mvm->fw->ucode_capa, 1411 IWL_UCODE_TLV_CAPA_BEACON_STORING)) 1412 wowlan_config_cmd.wakeup_filter |= 1413 cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING); 1414 1415 iwl_mvm_wowlan_config_key_params(mvm, 1416 d0i3_iter_data.connected_vif, 1417 true, flags); 1418 1419 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd, 1420 &d0i3_iter_data); 1421 1422 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags, 1423 sizeof(wowlan_config_cmd), 1424 &wowlan_config_cmd); 1425 if (ret) 1426 return ret; 1427 } 1428 1429 return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD, 1430 flags | CMD_MAKE_TRANS_IDLE, 1431 sizeof(d3_cfg_cmd), &d3_cfg_cmd); 1432 } 1433 1434 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac, 1435 struct ieee80211_vif *vif) 1436 { 1437 struct iwl_mvm *mvm = _data; 1438 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO; 1439 1440 IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr); 1441 if (vif->type != NL80211_IFTYPE_STATION || 1442 !vif->bss_conf.assoc) 1443 return; 1444 1445 iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags); 1446 } 1447 1448 struct iwl_mvm_d0i3_exit_work_iter_data { 1449 struct iwl_mvm *mvm; 1450 struct iwl_wowlan_status *status; 1451 u32 wakeup_reasons; 1452 }; 1453 1454 static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac, 1455 struct ieee80211_vif *vif) 1456 { 1457 struct iwl_mvm_d0i3_exit_work_iter_data *data = _data; 1458 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1459 u32 reasons = data->wakeup_reasons; 1460 1461 /* consider only the relevant station interface */ 1462 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc || 1463 data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id) 1464 return; 1465 1466 if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH) 1467 iwl_mvm_connection_loss(data->mvm, vif, "D0i3"); 1468 else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON) 1469 ieee80211_beacon_loss(vif); 1470 else 1471 iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status); 1472 } 1473 1474 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq) 1475 { 1476 struct ieee80211_sta *sta = NULL; 1477 struct iwl_mvm_sta *mvm_ap_sta; 1478 int i; 1479 bool wake_queues = false; 1480 1481 lockdep_assert_held(&mvm->mutex); 1482 1483 spin_lock_bh(&mvm->d0i3_tx_lock); 1484 1485 if (mvm->d0i3_ap_sta_id == IWL_MVM_STATION_COUNT) 1486 goto out; 1487 1488 IWL_DEBUG_RPM(mvm, "re-enqueue packets\n"); 1489 1490 /* get the sta in order to update seq numbers and re-enqueue skbs */ 1491 sta = rcu_dereference_protected( 1492 mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id], 1493 lockdep_is_held(&mvm->mutex)); 1494 1495 if (IS_ERR_OR_NULL(sta)) { 1496 sta = NULL; 1497 goto out; 1498 } 1499 1500 if (mvm->d0i3_offloading && qos_seq) { 1501 /* update qos seq numbers if offloading was enabled */ 1502 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta); 1503 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1504 u16 seq = le16_to_cpu(qos_seq[i]); 1505 /* firmware stores last-used one, we store next one */ 1506 seq += 0x10; 1507 mvm_ap_sta->tid_data[i].seq_number = seq; 1508 } 1509 } 1510 out: 1511 /* re-enqueue (or drop) all packets */ 1512 while (!skb_queue_empty(&mvm->d0i3_tx)) { 1513 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx); 1514 1515 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta)) 1516 ieee80211_free_txskb(mvm->hw, skb); 1517 1518 /* if the skb_queue is not empty, we need to wake queues */ 1519 wake_queues = true; 1520 } 1521 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1522 wake_up(&mvm->d0i3_exit_waitq); 1523 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; 1524 if (wake_queues) 1525 ieee80211_wake_queues(mvm->hw); 1526 1527 spin_unlock_bh(&mvm->d0i3_tx_lock); 1528 } 1529 1530 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk) 1531 { 1532 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work); 1533 struct iwl_host_cmd get_status_cmd = { 1534 .id = WOWLAN_GET_STATUSES, 1535 .flags = CMD_HIGH_PRIO | CMD_WANT_SKB, 1536 }; 1537 struct iwl_mvm_d0i3_exit_work_iter_data iter_data = { 1538 .mvm = mvm, 1539 }; 1540 1541 struct iwl_wowlan_status *status; 1542 int ret; 1543 u32 wakeup_reasons = 0; 1544 __le16 *qos_seq = NULL; 1545 1546 mutex_lock(&mvm->mutex); 1547 ret = iwl_mvm_send_cmd(mvm, &get_status_cmd); 1548 if (ret) 1549 goto out; 1550 1551 if (!get_status_cmd.resp_pkt) 1552 goto out; 1553 1554 status = (void *)get_status_cmd.resp_pkt->data; 1555 wakeup_reasons = le32_to_cpu(status->wakeup_reasons); 1556 qos_seq = status->qos_seq_ctr; 1557 1558 IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons); 1559 1560 iter_data.wakeup_reasons = wakeup_reasons; 1561 iter_data.status = status; 1562 ieee80211_iterate_active_interfaces(mvm->hw, 1563 IEEE80211_IFACE_ITER_NORMAL, 1564 iwl_mvm_d0i3_exit_work_iter, 1565 &iter_data); 1566 out: 1567 iwl_mvm_d0i3_enable_tx(mvm, qos_seq); 1568 1569 IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n", 1570 wakeup_reasons); 1571 1572 /* qos_seq might point inside resp_pkt, so free it only now */ 1573 if (get_status_cmd.resp_pkt) 1574 iwl_free_resp(&get_status_cmd); 1575 1576 /* the FW might have updated the regdomain */ 1577 iwl_mvm_update_changed_regdom(mvm); 1578 1579 iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK); 1580 mutex_unlock(&mvm->mutex); 1581 } 1582 1583 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm) 1584 { 1585 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE | 1586 CMD_WAKE_UP_TRANS; 1587 int ret; 1588 1589 IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n"); 1590 1591 if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR)) 1592 return -EINVAL; 1593 1594 mutex_lock(&mvm->d0i3_suspend_mutex); 1595 if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) { 1596 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n"); 1597 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags); 1598 mutex_unlock(&mvm->d0i3_suspend_mutex); 1599 return 0; 1600 } 1601 mutex_unlock(&mvm->d0i3_suspend_mutex); 1602 1603 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL); 1604 if (ret) 1605 goto out; 1606 1607 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1608 IEEE80211_IFACE_ITER_NORMAL, 1609 iwl_mvm_exit_d0i3_iterator, 1610 mvm); 1611 out: 1612 schedule_work(&mvm->d0i3_exit_work); 1613 return ret; 1614 } 1615 1616 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode) 1617 { 1618 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1619 1620 iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK); 1621 return _iwl_mvm_exit_d0i3(mvm); 1622 } 1623 1624 #define IWL_MVM_COMMON_OPS \ 1625 /* these could be differentiated */ \ 1626 .async_cb = iwl_mvm_async_cb, \ 1627 .queue_full = iwl_mvm_stop_sw_queue, \ 1628 .queue_not_full = iwl_mvm_wake_sw_queue, \ 1629 .hw_rf_kill = iwl_mvm_set_hw_rfkill_state, \ 1630 .free_skb = iwl_mvm_free_skb, \ 1631 .nic_error = iwl_mvm_nic_error, \ 1632 .cmd_queue_full = iwl_mvm_cmd_queue_full, \ 1633 .nic_config = iwl_mvm_nic_config, \ 1634 .enter_d0i3 = iwl_mvm_enter_d0i3, \ 1635 .exit_d0i3 = iwl_mvm_exit_d0i3, \ 1636 /* as we only register one, these MUST be common! */ \ 1637 .start = iwl_op_mode_mvm_start, \ 1638 .stop = iwl_op_mode_mvm_stop 1639 1640 static const struct iwl_op_mode_ops iwl_mvm_ops = { 1641 IWL_MVM_COMMON_OPS, 1642 .rx = iwl_mvm_rx, 1643 }; 1644 1645 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode, 1646 struct napi_struct *napi, 1647 struct iwl_rx_cmd_buffer *rxb, 1648 unsigned int queue) 1649 { 1650 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1651 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1652 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd); 1653 1654 if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))) 1655 iwl_mvm_rx_frame_release(mvm, napi, rxb, queue); 1656 else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP, 1657 RX_QUEUES_NOTIFICATION))) 1658 iwl_mvm_rx_queue_notif(mvm, rxb, queue); 1659 else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD))) 1660 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue); 1661 } 1662 1663 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = { 1664 IWL_MVM_COMMON_OPS, 1665 .rx = iwl_mvm_rx_mq, 1666 .rx_rss = iwl_mvm_rx_mq_rss, 1667 }; 1668