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(SCAN_OFFLOAD_COMPLETE), 363 HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_CMD), 364 HCMD_NAME(SCAN_OFFLOAD_CONFIG_CMD), 365 HCMD_NAME(POWER_TABLE_CMD), 366 HCMD_NAME(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION), 367 HCMD_NAME(REPLY_THERMAL_MNG_BACKOFF), 368 HCMD_NAME(DC2DC_CONFIG_CMD), 369 HCMD_NAME(NVM_ACCESS_CMD), 370 HCMD_NAME(SET_CALIB_DEFAULT_CMD), 371 HCMD_NAME(BEACON_NOTIFICATION), 372 HCMD_NAME(BEACON_TEMPLATE_CMD), 373 HCMD_NAME(TX_ANT_CONFIGURATION_CMD), 374 HCMD_NAME(BT_CONFIG), 375 HCMD_NAME(STATISTICS_CMD), 376 HCMD_NAME(STATISTICS_NOTIFICATION), 377 HCMD_NAME(EOSP_NOTIFICATION), 378 HCMD_NAME(REDUCE_TX_POWER_CMD), 379 HCMD_NAME(CARD_STATE_CMD), 380 HCMD_NAME(CARD_STATE_NOTIFICATION), 381 HCMD_NAME(MISSED_BEACONS_NOTIFICATION), 382 HCMD_NAME(TDLS_CONFIG_CMD), 383 HCMD_NAME(MAC_PM_POWER_TABLE), 384 HCMD_NAME(TDLS_CHANNEL_SWITCH_NOTIFICATION), 385 HCMD_NAME(MFUART_LOAD_NOTIFICATION), 386 HCMD_NAME(RSS_CONFIG_CMD), 387 HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC), 388 HCMD_NAME(REPLY_RX_PHY_CMD), 389 HCMD_NAME(REPLY_RX_MPDU_CMD), 390 HCMD_NAME(BA_NOTIF), 391 HCMD_NAME(MCC_UPDATE_CMD), 392 HCMD_NAME(MCC_CHUB_UPDATE_CMD), 393 HCMD_NAME(MARKER_CMD), 394 HCMD_NAME(BT_COEX_PRIO_TABLE), 395 HCMD_NAME(BT_COEX_PROT_ENV), 396 HCMD_NAME(BT_PROFILE_NOTIFICATION), 397 HCMD_NAME(BCAST_FILTER_CMD), 398 HCMD_NAME(MCAST_FILTER_CMD), 399 HCMD_NAME(REPLY_SF_CFG_CMD), 400 HCMD_NAME(REPLY_BEACON_FILTERING_CMD), 401 HCMD_NAME(D3_CONFIG_CMD), 402 HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD), 403 HCMD_NAME(OFFLOADS_QUERY_CMD), 404 HCMD_NAME(REMOTE_WAKE_CONFIG_CMD), 405 HCMD_NAME(MATCH_FOUND_NOTIFICATION), 406 HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER), 407 HCMD_NAME(DTS_MEASUREMENT_NOTIFICATION), 408 HCMD_NAME(WOWLAN_PATTERNS), 409 HCMD_NAME(WOWLAN_CONFIGURATION), 410 HCMD_NAME(WOWLAN_TSC_RSC_PARAM), 411 HCMD_NAME(WOWLAN_TKIP_PARAM), 412 HCMD_NAME(WOWLAN_KEK_KCK_MATERIAL), 413 HCMD_NAME(WOWLAN_GET_STATUSES), 414 HCMD_NAME(WOWLAN_TX_POWER_PER_DB), 415 HCMD_NAME(SCAN_ITERATION_COMPLETE), 416 HCMD_NAME(D0I3_END_CMD), 417 HCMD_NAME(LTR_CONFIG), 418 HCMD_NAME(REPLY_DEBUG_CMD), 419 }; 420 421 /* Please keep this array *SORTED* by hex value. 422 * Access is done through binary search 423 */ 424 static const struct iwl_hcmd_names iwl_mvm_system_names[] = { 425 HCMD_NAME(SHARED_MEM_CFG_CMD), 426 }; 427 428 /* Please keep this array *SORTED* by hex value. 429 * Access is done through binary search 430 */ 431 static const struct iwl_hcmd_names iwl_mvm_mac_conf_names[] = { 432 HCMD_NAME(LINK_QUALITY_MEASUREMENT_CMD), 433 HCMD_NAME(LINK_QUALITY_MEASUREMENT_COMPLETE_NOTIF), 434 HCMD_NAME(CHANNEL_SWITCH_NOA_NOTIF), 435 }; 436 437 /* Please keep this array *SORTED* by hex value. 438 * Access is done through binary search 439 */ 440 static const struct iwl_hcmd_names iwl_mvm_phy_names[] = { 441 HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE), 442 HCMD_NAME(CTDP_CONFIG_CMD), 443 HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD), 444 HCMD_NAME(CT_KILL_NOTIFICATION), 445 HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE), 446 }; 447 448 /* Please keep this array *SORTED* by hex value. 449 * Access is done through binary search 450 */ 451 static const struct iwl_hcmd_names iwl_mvm_data_path_names[] = { 452 HCMD_NAME(UPDATE_MU_GROUPS_CMD), 453 HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD), 454 HCMD_NAME(MU_GROUP_MGMT_NOTIF), 455 HCMD_NAME(RX_QUEUES_NOTIFICATION), 456 }; 457 458 /* Please keep this array *SORTED* by hex value. 459 * Access is done through binary search 460 */ 461 static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = { 462 HCMD_NAME(STORED_BEACON_NTF), 463 }; 464 465 static const struct iwl_hcmd_arr iwl_mvm_groups[] = { 466 [LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names), 467 [LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names), 468 [SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names), 469 [MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names), 470 [PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names), 471 [DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names), 472 [PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names), 473 }; 474 475 /* this forward declaration can avoid to export the function */ 476 static void iwl_mvm_async_handlers_wk(struct work_struct *wk); 477 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk); 478 479 static u32 calc_min_backoff(struct iwl_trans *trans, const struct iwl_cfg *cfg) 480 { 481 const struct iwl_pwr_tx_backoff *pwr_tx_backoff = cfg->pwr_tx_backoffs; 482 483 if (!pwr_tx_backoff) 484 return 0; 485 486 while (pwr_tx_backoff->pwr) { 487 if (trans->dflt_pwr_limit >= pwr_tx_backoff->pwr) 488 return pwr_tx_backoff->backoff; 489 490 pwr_tx_backoff++; 491 } 492 493 return 0; 494 } 495 496 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work); 497 498 static void iwl_mvm_tx_unblock_dwork(struct work_struct *work) 499 { 500 struct iwl_mvm *mvm = 501 container_of(work, struct iwl_mvm, cs_tx_unblock_dwork.work); 502 struct ieee80211_vif *tx_blocked_vif; 503 struct iwl_mvm_vif *mvmvif; 504 505 mutex_lock(&mvm->mutex); 506 507 tx_blocked_vif = 508 rcu_dereference_protected(mvm->csa_tx_blocked_vif, 509 lockdep_is_held(&mvm->mutex)); 510 511 if (!tx_blocked_vif) 512 goto unlock; 513 514 mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif); 515 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false); 516 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); 517 unlock: 518 mutex_unlock(&mvm->mutex); 519 } 520 521 static struct iwl_op_mode * 522 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg, 523 const struct iwl_fw *fw, struct dentry *dbgfs_dir) 524 { 525 struct ieee80211_hw *hw; 526 struct iwl_op_mode *op_mode; 527 struct iwl_mvm *mvm; 528 struct iwl_trans_config trans_cfg = {}; 529 static const u8 no_reclaim_cmds[] = { 530 TX_CMD, 531 }; 532 int err, scan_size; 533 u32 min_backoff; 534 535 /* 536 * We use IWL_MVM_STATION_COUNT to check the validity of the station 537 * index all over the driver - check that its value corresponds to the 538 * array size. 539 */ 540 BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT); 541 542 /******************************** 543 * 1. Allocating and configuring HW data 544 ********************************/ 545 hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) + 546 sizeof(struct iwl_mvm), 547 &iwl_mvm_hw_ops); 548 if (!hw) 549 return NULL; 550 551 if (cfg->max_rx_agg_size) 552 hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size; 553 554 if (cfg->max_tx_agg_size) 555 hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size; 556 557 op_mode = hw->priv; 558 559 mvm = IWL_OP_MODE_GET_MVM(op_mode); 560 mvm->dev = trans->dev; 561 mvm->trans = trans; 562 mvm->cfg = cfg; 563 mvm->fw = fw; 564 mvm->hw = hw; 565 566 if (iwl_mvm_has_new_rx_api(mvm)) { 567 op_mode->ops = &iwl_mvm_ops_mq; 568 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_desc); 569 } else { 570 op_mode->ops = &iwl_mvm_ops; 571 trans->rx_mpdu_cmd_hdr_size = 572 sizeof(struct iwl_rx_mpdu_res_start); 573 574 if (WARN_ON(trans->num_rx_queues > 1)) 575 goto out_free; 576 } 577 578 mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0; 579 580 if (!iwl_mvm_is_dqa_supported(mvm)) { 581 mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1; 582 583 if (mvm->cfg->base_params->num_of_queues == 16) { 584 mvm->aux_queue = 11; 585 mvm->first_agg_queue = 12; 586 } else { 587 mvm->aux_queue = 15; 588 mvm->first_agg_queue = 16; 589 } 590 } else { 591 mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE; 592 mvm->first_agg_queue = IWL_MVM_DQA_MIN_DATA_QUEUE; 593 mvm->last_agg_queue = IWL_MVM_DQA_MAX_DATA_QUEUE; 594 } 595 mvm->sf_state = SF_UNINIT; 596 mvm->cur_ucode = IWL_UCODE_INIT; 597 mvm->drop_bcn_ap_mode = true; 598 599 mutex_init(&mvm->mutex); 600 mutex_init(&mvm->d0i3_suspend_mutex); 601 spin_lock_init(&mvm->async_handlers_lock); 602 INIT_LIST_HEAD(&mvm->time_event_list); 603 INIT_LIST_HEAD(&mvm->aux_roc_te_list); 604 INIT_LIST_HEAD(&mvm->async_handlers_list); 605 spin_lock_init(&mvm->time_event_lock); 606 spin_lock_init(&mvm->queue_info_lock); 607 608 INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk); 609 INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk); 610 INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk); 611 INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work); 612 INIT_DELAYED_WORK(&mvm->fw_dump_wk, iwl_mvm_fw_error_dump_wk); 613 INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work); 614 INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk); 615 INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk); 616 617 spin_lock_init(&mvm->d0i3_tx_lock); 618 spin_lock_init(&mvm->refs_lock); 619 skb_queue_head_init(&mvm->d0i3_tx); 620 init_waitqueue_head(&mvm->d0i3_exit_waitq); 621 622 atomic_set(&mvm->queue_sync_counter, 0); 623 624 SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev); 625 626 INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork); 627 628 /* 629 * Populate the state variables that the transport layer needs 630 * to know about. 631 */ 632 trans_cfg.op_mode = op_mode; 633 trans_cfg.no_reclaim_cmds = no_reclaim_cmds; 634 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds); 635 switch (iwlwifi_mod_params.amsdu_size) { 636 case IWL_AMSDU_DEF: 637 case IWL_AMSDU_4K: 638 trans_cfg.rx_buf_size = IWL_AMSDU_4K; 639 break; 640 case IWL_AMSDU_8K: 641 trans_cfg.rx_buf_size = IWL_AMSDU_8K; 642 break; 643 case IWL_AMSDU_12K: 644 trans_cfg.rx_buf_size = IWL_AMSDU_12K; 645 break; 646 default: 647 pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME, 648 iwlwifi_mod_params.amsdu_size); 649 trans_cfg.rx_buf_size = IWL_AMSDU_4K; 650 } 651 652 /* the hardware splits the A-MSDU */ 653 if (mvm->cfg->mq_rx_supported) 654 trans_cfg.rx_buf_size = IWL_AMSDU_4K; 655 trans_cfg.wide_cmd_header = fw_has_api(&mvm->fw->ucode_capa, 656 IWL_UCODE_TLV_API_WIDE_CMD_HDR); 657 658 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DW_BC_TABLE) 659 trans_cfg.bc_table_dword = true; 660 661 trans_cfg.command_groups = iwl_mvm_groups; 662 trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups); 663 664 if (iwl_mvm_is_dqa_supported(mvm)) 665 trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE; 666 else 667 trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE; 668 trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD; 669 trans_cfg.scd_set_active = true; 670 671 trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info, 672 driver_data[2]); 673 674 trans_cfg.sdio_adma_addr = fw->sdio_adma_addr; 675 trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD; 676 677 /* Set a short watchdog for the command queue */ 678 trans_cfg.cmd_q_wdg_timeout = 679 iwl_mvm_get_wd_timeout(mvm, NULL, false, true); 680 681 snprintf(mvm->hw->wiphy->fw_version, 682 sizeof(mvm->hw->wiphy->fw_version), 683 "%s", fw->fw_version); 684 685 /* Configure transport layer */ 686 iwl_trans_configure(mvm->trans, &trans_cfg); 687 688 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD; 689 trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv; 690 trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num; 691 memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv, 692 sizeof(trans->dbg_conf_tlv)); 693 trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv; 694 695 /* set up notification wait support */ 696 iwl_notification_wait_init(&mvm->notif_wait); 697 698 /* Init phy db */ 699 mvm->phy_db = iwl_phy_db_init(trans); 700 if (!mvm->phy_db) { 701 IWL_ERR(mvm, "Cannot init phy_db\n"); 702 goto out_free; 703 } 704 705 IWL_INFO(mvm, "Detected %s, REV=0x%X\n", 706 mvm->cfg->name, mvm->trans->hw_rev); 707 708 if (iwlwifi_mod_params.nvm_file) 709 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file; 710 else 711 IWL_DEBUG_EEPROM(mvm->trans->dev, 712 "working without external nvm file\n"); 713 714 if (WARN(cfg->no_power_up_nic_in_init && !mvm->nvm_file_name, 715 "not allowing power-up and not having nvm_file\n")) 716 goto out_free; 717 718 /* 719 * Even if nvm exists in the nvm_file driver should read again the nvm 720 * from the nic because there might be entries that exist in the OTP 721 * and not in the file. 722 * for nics with no_power_up_nic_in_init: rely completley on nvm_file 723 */ 724 if (cfg->no_power_up_nic_in_init && mvm->nvm_file_name) { 725 err = iwl_nvm_init(mvm, false); 726 if (err) 727 goto out_free; 728 } else { 729 err = iwl_trans_start_hw(mvm->trans); 730 if (err) 731 goto out_free; 732 733 mutex_lock(&mvm->mutex); 734 iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE); 735 err = iwl_run_init_mvm_ucode(mvm, true); 736 if (!err || !iwlmvm_mod_params.init_dbg) 737 iwl_mvm_stop_device(mvm); 738 iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE); 739 mutex_unlock(&mvm->mutex); 740 /* returns 0 if successful, 1 if success but in rfkill */ 741 if (err < 0 && !iwlmvm_mod_params.init_dbg) { 742 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err); 743 goto out_free; 744 } 745 } 746 747 scan_size = iwl_mvm_scan_size(mvm); 748 749 mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL); 750 if (!mvm->scan_cmd) 751 goto out_free; 752 753 /* Set EBS as successful as long as not stated otherwise by the FW. */ 754 mvm->last_ebs_successful = true; 755 756 err = iwl_mvm_mac_setup_register(mvm); 757 if (err) 758 goto out_free; 759 760 min_backoff = calc_min_backoff(trans, cfg); 761 iwl_mvm_thermal_initialize(mvm, min_backoff); 762 763 err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir); 764 if (err) 765 goto out_unregister; 766 767 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx)); 768 769 /* The transport always starts with a taken reference, we can 770 * release it now if d0i3 is supported */ 771 if (iwl_mvm_is_d0i3_supported(mvm)) 772 iwl_trans_unref(mvm->trans); 773 774 iwl_mvm_tof_init(mvm); 775 776 return op_mode; 777 778 out_unregister: 779 ieee80211_unregister_hw(mvm->hw); 780 iwl_mvm_leds_exit(mvm); 781 iwl_mvm_thermal_exit(mvm); 782 out_free: 783 flush_delayed_work(&mvm->fw_dump_wk); 784 iwl_phy_db_free(mvm->phy_db); 785 kfree(mvm->scan_cmd); 786 if (!cfg->no_power_up_nic_in_init || !mvm->nvm_file_name) 787 iwl_trans_op_mode_leave(trans); 788 ieee80211_free_hw(mvm->hw); 789 return NULL; 790 } 791 792 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode) 793 { 794 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 795 int i; 796 797 /* If d0i3 is supported, we have released the reference that 798 * the transport started with, so we should take it back now 799 * that we are leaving. 800 */ 801 if (iwl_mvm_is_d0i3_supported(mvm)) 802 iwl_trans_ref(mvm->trans); 803 804 iwl_mvm_leds_exit(mvm); 805 806 iwl_mvm_thermal_exit(mvm); 807 808 ieee80211_unregister_hw(mvm->hw); 809 810 kfree(mvm->scan_cmd); 811 kfree(mvm->mcast_filter_cmd); 812 mvm->mcast_filter_cmd = NULL; 813 814 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS) 815 kfree(mvm->d3_resume_sram); 816 #endif 817 818 iwl_trans_op_mode_leave(mvm->trans); 819 820 iwl_phy_db_free(mvm->phy_db); 821 mvm->phy_db = NULL; 822 823 iwl_free_nvm_data(mvm->nvm_data); 824 for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++) 825 kfree(mvm->nvm_sections[i].data); 826 827 iwl_mvm_tof_clean(mvm); 828 829 mutex_destroy(&mvm->mutex); 830 mutex_destroy(&mvm->d0i3_suspend_mutex); 831 832 ieee80211_free_hw(mvm->hw); 833 } 834 835 struct iwl_async_handler_entry { 836 struct list_head list; 837 struct iwl_rx_cmd_buffer rxb; 838 enum iwl_rx_handler_context context; 839 void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb); 840 }; 841 842 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm) 843 { 844 struct iwl_async_handler_entry *entry, *tmp; 845 846 spin_lock_bh(&mvm->async_handlers_lock); 847 list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) { 848 iwl_free_rxb(&entry->rxb); 849 list_del(&entry->list); 850 kfree(entry); 851 } 852 spin_unlock_bh(&mvm->async_handlers_lock); 853 } 854 855 static void iwl_mvm_async_handlers_wk(struct work_struct *wk) 856 { 857 struct iwl_mvm *mvm = 858 container_of(wk, struct iwl_mvm, async_handlers_wk); 859 struct iwl_async_handler_entry *entry, *tmp; 860 struct list_head local_list; 861 862 INIT_LIST_HEAD(&local_list); 863 864 /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */ 865 866 /* 867 * Sync with Rx path with a lock. Remove all the entries from this list, 868 * add them to a local one (lock free), and then handle them. 869 */ 870 spin_lock_bh(&mvm->async_handlers_lock); 871 list_splice_init(&mvm->async_handlers_list, &local_list); 872 spin_unlock_bh(&mvm->async_handlers_lock); 873 874 list_for_each_entry_safe(entry, tmp, &local_list, list) { 875 if (entry->context == RX_HANDLER_ASYNC_LOCKED) 876 mutex_lock(&mvm->mutex); 877 entry->fn(mvm, &entry->rxb); 878 iwl_free_rxb(&entry->rxb); 879 list_del(&entry->list); 880 if (entry->context == RX_HANDLER_ASYNC_LOCKED) 881 mutex_unlock(&mvm->mutex); 882 kfree(entry); 883 } 884 } 885 886 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm, 887 struct iwl_rx_packet *pkt) 888 { 889 struct iwl_fw_dbg_trigger_tlv *trig; 890 struct iwl_fw_dbg_trigger_cmd *cmds_trig; 891 int i; 892 893 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF)) 894 return; 895 896 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF); 897 cmds_trig = (void *)trig->data; 898 899 if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig)) 900 return; 901 902 for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) { 903 /* don't collect on CMD 0 */ 904 if (!cmds_trig->cmds[i].cmd_id) 905 break; 906 907 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd || 908 cmds_trig->cmds[i].group_id != pkt->hdr.group_id) 909 continue; 910 911 iwl_mvm_fw_dbg_collect_trig(mvm, trig, 912 "CMD 0x%02x.%02x received", 913 pkt->hdr.group_id, pkt->hdr.cmd); 914 break; 915 } 916 } 917 918 static void iwl_mvm_rx_common(struct iwl_mvm *mvm, 919 struct iwl_rx_cmd_buffer *rxb, 920 struct iwl_rx_packet *pkt) 921 { 922 int i; 923 924 iwl_mvm_rx_check_trigger(mvm, pkt); 925 926 /* 927 * Do the notification wait before RX handlers so 928 * even if the RX handler consumes the RXB we have 929 * access to it in the notification wait entry. 930 */ 931 iwl_notification_wait_notify(&mvm->notif_wait, pkt); 932 933 for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) { 934 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i]; 935 struct iwl_async_handler_entry *entry; 936 937 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) 938 continue; 939 940 if (rx_h->context == RX_HANDLER_SYNC) { 941 rx_h->fn(mvm, rxb); 942 return; 943 } 944 945 entry = kzalloc(sizeof(*entry), GFP_ATOMIC); 946 /* we can't do much... */ 947 if (!entry) 948 return; 949 950 entry->rxb._page = rxb_steal_page(rxb); 951 entry->rxb._offset = rxb->_offset; 952 entry->rxb._rx_page_order = rxb->_rx_page_order; 953 entry->fn = rx_h->fn; 954 entry->context = rx_h->context; 955 spin_lock(&mvm->async_handlers_lock); 956 list_add_tail(&entry->list, &mvm->async_handlers_list); 957 spin_unlock(&mvm->async_handlers_lock); 958 schedule_work(&mvm->async_handlers_wk); 959 break; 960 } 961 } 962 963 static void iwl_mvm_rx(struct iwl_op_mode *op_mode, 964 struct napi_struct *napi, 965 struct iwl_rx_cmd_buffer *rxb) 966 { 967 struct iwl_rx_packet *pkt = rxb_addr(rxb); 968 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 969 970 if (likely(pkt->hdr.cmd == REPLY_RX_MPDU_CMD)) 971 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb); 972 else if (pkt->hdr.cmd == REPLY_RX_PHY_CMD) 973 iwl_mvm_rx_rx_phy_cmd(mvm, rxb); 974 else 975 iwl_mvm_rx_common(mvm, rxb, pkt); 976 } 977 978 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode, 979 struct napi_struct *napi, 980 struct iwl_rx_cmd_buffer *rxb) 981 { 982 struct iwl_rx_packet *pkt = rxb_addr(rxb); 983 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 984 985 if (likely(pkt->hdr.cmd == REPLY_RX_MPDU_CMD)) 986 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0); 987 else if (unlikely(pkt->hdr.group_id == DATA_PATH_GROUP && 988 pkt->hdr.cmd == RX_QUEUES_NOTIFICATION)) 989 iwl_mvm_rx_queue_notif(mvm, rxb, 0); 990 else if (pkt->hdr.cmd == FRAME_RELEASE) 991 iwl_mvm_rx_frame_release(mvm, napi, rxb, 0); 992 else 993 iwl_mvm_rx_common(mvm, rxb, pkt); 994 } 995 996 void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq) 997 { 998 int q; 999 1000 if (WARN_ON_ONCE(!mq)) 1001 return; 1002 1003 for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) { 1004 if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) { 1005 IWL_DEBUG_TX_QUEUES(mvm, 1006 "mac80211 %d already stopped\n", q); 1007 continue; 1008 } 1009 1010 ieee80211_stop_queue(mvm->hw, q); 1011 } 1012 } 1013 1014 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode, 1015 const struct iwl_device_cmd *cmd) 1016 { 1017 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1018 1019 /* 1020 * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA 1021 * commands that need to block the Tx queues. 1022 */ 1023 iwl_trans_block_txq_ptrs(mvm->trans, false); 1024 } 1025 1026 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue) 1027 { 1028 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1029 unsigned long mq; 1030 1031 spin_lock_bh(&mvm->queue_info_lock); 1032 mq = mvm->queue_info[hw_queue].hw_queue_to_mac80211; 1033 spin_unlock_bh(&mvm->queue_info_lock); 1034 1035 iwl_mvm_stop_mac_queues(mvm, mq); 1036 } 1037 1038 void iwl_mvm_start_mac_queues(struct iwl_mvm *mvm, unsigned long mq) 1039 { 1040 int q; 1041 1042 if (WARN_ON_ONCE(!mq)) 1043 return; 1044 1045 for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) { 1046 if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) { 1047 IWL_DEBUG_TX_QUEUES(mvm, 1048 "mac80211 %d still stopped\n", q); 1049 continue; 1050 } 1051 1052 ieee80211_wake_queue(mvm->hw, q); 1053 } 1054 } 1055 1056 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue) 1057 { 1058 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1059 unsigned long mq; 1060 1061 spin_lock_bh(&mvm->queue_info_lock); 1062 mq = mvm->queue_info[hw_queue].hw_queue_to_mac80211; 1063 spin_unlock_bh(&mvm->queue_info_lock); 1064 1065 iwl_mvm_start_mac_queues(mvm, mq); 1066 } 1067 1068 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state) 1069 { 1070 if (state) 1071 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); 1072 else 1073 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); 1074 1075 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm)); 1076 } 1077 1078 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state) 1079 { 1080 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1081 bool calibrating = ACCESS_ONCE(mvm->calibrating); 1082 1083 if (state) 1084 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); 1085 else 1086 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); 1087 1088 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm)); 1089 1090 /* iwl_run_init_mvm_ucode is waiting for results, abort it */ 1091 if (calibrating) 1092 iwl_abort_notification_waits(&mvm->notif_wait); 1093 1094 /* 1095 * Stop the device if we run OPERATIONAL firmware or if we are in the 1096 * middle of the calibrations. 1097 */ 1098 return state && (mvm->cur_ucode != IWL_UCODE_INIT || calibrating); 1099 } 1100 1101 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb) 1102 { 1103 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1104 struct ieee80211_tx_info *info; 1105 1106 info = IEEE80211_SKB_CB(skb); 1107 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]); 1108 ieee80211_free_txskb(mvm->hw, skb); 1109 } 1110 1111 struct iwl_mvm_reprobe { 1112 struct device *dev; 1113 struct work_struct work; 1114 }; 1115 1116 static void iwl_mvm_reprobe_wk(struct work_struct *wk) 1117 { 1118 struct iwl_mvm_reprobe *reprobe; 1119 1120 reprobe = container_of(wk, struct iwl_mvm_reprobe, work); 1121 if (device_reprobe(reprobe->dev)) 1122 dev_err(reprobe->dev, "reprobe failed!\n"); 1123 kfree(reprobe); 1124 module_put(THIS_MODULE); 1125 } 1126 1127 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work) 1128 { 1129 struct iwl_mvm *mvm = 1130 container_of(work, struct iwl_mvm, fw_dump_wk.work); 1131 1132 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT)) 1133 return; 1134 1135 mutex_lock(&mvm->mutex); 1136 1137 /* stop recording */ 1138 if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000) { 1139 iwl_set_bits_prph(mvm->trans, MON_BUFF_SAMPLE_CTL, 0x100); 1140 } else { 1141 iwl_write_prph(mvm->trans, DBGC_IN_SAMPLE, 0); 1142 /* wait before we collect the data till the DBGC stop */ 1143 udelay(100); 1144 } 1145 1146 iwl_mvm_fw_error_dump(mvm); 1147 1148 /* start recording again if the firmware is not crashed */ 1149 WARN_ON_ONCE((!test_bit(STATUS_FW_ERROR, &mvm->trans->status)) && 1150 mvm->fw->dbg_dest_tlv && 1151 iwl_mvm_start_fw_dbg_conf(mvm, mvm->fw_dbg_conf)); 1152 1153 mutex_unlock(&mvm->mutex); 1154 1155 iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT); 1156 } 1157 1158 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error) 1159 { 1160 iwl_abort_notification_waits(&mvm->notif_wait); 1161 1162 /* 1163 * This is a bit racy, but worst case we tell mac80211 about 1164 * a stopped/aborted scan when that was already done which 1165 * is not a problem. It is necessary to abort any os scan 1166 * here because mac80211 requires having the scan cleared 1167 * before restarting. 1168 * We'll reset the scan_status to NONE in restart cleanup in 1169 * the next start() call from mac80211. If restart isn't called 1170 * (no fw restart) scan status will stay busy. 1171 */ 1172 iwl_mvm_report_scan_aborted(mvm); 1173 1174 /* 1175 * If we're restarting already, don't cycle restarts. 1176 * If INIT fw asserted, it will likely fail again. 1177 * If WoWLAN fw asserted, don't restart either, mac80211 1178 * can't recover this since we're already half suspended. 1179 */ 1180 if (!mvm->restart_fw && fw_error) { 1181 iwl_mvm_fw_dbg_collect_desc(mvm, &iwl_mvm_dump_desc_assert, 1182 NULL); 1183 } else if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART, 1184 &mvm->status)) { 1185 struct iwl_mvm_reprobe *reprobe; 1186 1187 IWL_ERR(mvm, 1188 "Firmware error during reconfiguration - reprobe!\n"); 1189 1190 /* 1191 * get a module reference to avoid doing this while unloading 1192 * anyway and to avoid scheduling a work with code that's 1193 * being removed. 1194 */ 1195 if (!try_module_get(THIS_MODULE)) { 1196 IWL_ERR(mvm, "Module is being unloaded - abort\n"); 1197 return; 1198 } 1199 1200 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC); 1201 if (!reprobe) { 1202 module_put(THIS_MODULE); 1203 return; 1204 } 1205 reprobe->dev = mvm->trans->dev; 1206 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk); 1207 schedule_work(&reprobe->work); 1208 } else if (mvm->cur_ucode == IWL_UCODE_REGULAR) { 1209 /* don't let the transport/FW power down */ 1210 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); 1211 1212 if (fw_error && mvm->restart_fw > 0) 1213 mvm->restart_fw--; 1214 ieee80211_restart_hw(mvm->hw); 1215 } 1216 } 1217 1218 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode) 1219 { 1220 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1221 1222 iwl_mvm_dump_nic_error_log(mvm); 1223 1224 iwl_mvm_nic_restart(mvm, true); 1225 } 1226 1227 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode) 1228 { 1229 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1230 1231 WARN_ON(1); 1232 iwl_mvm_nic_restart(mvm, true); 1233 } 1234 1235 struct iwl_d0i3_iter_data { 1236 struct iwl_mvm *mvm; 1237 struct ieee80211_vif *connected_vif; 1238 u8 ap_sta_id; 1239 u8 vif_count; 1240 u8 offloading_tid; 1241 bool disable_offloading; 1242 }; 1243 1244 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm, 1245 struct ieee80211_vif *vif, 1246 struct iwl_d0i3_iter_data *iter_data) 1247 { 1248 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1249 struct iwl_mvm_sta *mvmsta; 1250 u32 available_tids = 0; 1251 u8 tid; 1252 1253 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION || 1254 mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT)) 1255 return false; 1256 1257 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); 1258 if (!mvmsta) 1259 return false; 1260 1261 spin_lock_bh(&mvmsta->lock); 1262 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 1263 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 1264 1265 /* 1266 * in case of pending tx packets, don't use this tid 1267 * for offloading in order to prevent reuse of the same 1268 * qos seq counters. 1269 */ 1270 if (iwl_mvm_tid_queued(tid_data)) 1271 continue; 1272 1273 if (tid_data->state != IWL_AGG_OFF) 1274 continue; 1275 1276 available_tids |= BIT(tid); 1277 } 1278 spin_unlock_bh(&mvmsta->lock); 1279 1280 /* 1281 * disallow protocol offloading if we have no available tid 1282 * (with no pending frames and no active aggregation, 1283 * as we don't handle "holes" properly - the scheduler needs the 1284 * frame's seq number and TFD index to match) 1285 */ 1286 if (!available_tids) 1287 return true; 1288 1289 /* for simplicity, just use the first available tid */ 1290 iter_data->offloading_tid = ffs(available_tids) - 1; 1291 return false; 1292 } 1293 1294 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac, 1295 struct ieee80211_vif *vif) 1296 { 1297 struct iwl_d0i3_iter_data *data = _data; 1298 struct iwl_mvm *mvm = data->mvm; 1299 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1300 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; 1301 1302 IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr); 1303 if (vif->type != NL80211_IFTYPE_STATION || 1304 !vif->bss_conf.assoc) 1305 return; 1306 1307 /* 1308 * in case of pending tx packets or active aggregations, 1309 * avoid offloading features in order to prevent reuse of 1310 * the same qos seq counters. 1311 */ 1312 if (iwl_mvm_disallow_offloading(mvm, vif, data)) 1313 data->disable_offloading = true; 1314 1315 iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags); 1316 iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading, 1317 false, flags); 1318 1319 /* 1320 * on init/association, mvm already configures POWER_TABLE_CMD 1321 * and REPLY_MCAST_FILTER_CMD, so currently don't 1322 * reconfigure them (we might want to use different 1323 * params later on, though). 1324 */ 1325 data->ap_sta_id = mvmvif->ap_sta_id; 1326 data->vif_count++; 1327 1328 /* 1329 * no new commands can be sent at this stage, so it's safe 1330 * to save the vif pointer during d0i3 entrance. 1331 */ 1332 data->connected_vif = vif; 1333 } 1334 1335 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm, 1336 struct iwl_wowlan_config_cmd *cmd, 1337 struct iwl_d0i3_iter_data *iter_data) 1338 { 1339 struct ieee80211_sta *ap_sta; 1340 struct iwl_mvm_sta *mvm_ap_sta; 1341 1342 if (iter_data->ap_sta_id == IWL_MVM_STATION_COUNT) 1343 return; 1344 1345 rcu_read_lock(); 1346 1347 ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]); 1348 if (IS_ERR_OR_NULL(ap_sta)) 1349 goto out; 1350 1351 mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta); 1352 cmd->is_11n_connection = ap_sta->ht_cap.ht_supported; 1353 cmd->offloading_tid = iter_data->offloading_tid; 1354 cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING | 1355 ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON; 1356 /* 1357 * The d0i3 uCode takes care of the nonqos counters, 1358 * so configure only the qos seq ones. 1359 */ 1360 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd); 1361 out: 1362 rcu_read_unlock(); 1363 } 1364 1365 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode) 1366 { 1367 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1368 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; 1369 int ret; 1370 struct iwl_d0i3_iter_data d0i3_iter_data = { 1371 .mvm = mvm, 1372 }; 1373 struct iwl_wowlan_config_cmd wowlan_config_cmd = { 1374 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME | 1375 IWL_WOWLAN_WAKEUP_BEACON_MISS | 1376 IWL_WOWLAN_WAKEUP_LINK_CHANGE), 1377 }; 1378 struct iwl_d3_manager_config d3_cfg_cmd = { 1379 .min_sleep_time = cpu_to_le32(1000), 1380 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR), 1381 }; 1382 1383 IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n"); 1384 1385 if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR)) 1386 return -EINVAL; 1387 1388 set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1389 1390 /* 1391 * iwl_mvm_ref_sync takes a reference before checking the flag. 1392 * so by checking there is no held reference we prevent a state 1393 * in which iwl_mvm_ref_sync continues successfully while we 1394 * configure the firmware to enter d0i3 1395 */ 1396 if (iwl_mvm_ref_taken(mvm)) { 1397 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n"); 1398 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1399 wake_up(&mvm->d0i3_exit_waitq); 1400 return 1; 1401 } 1402 1403 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1404 IEEE80211_IFACE_ITER_NORMAL, 1405 iwl_mvm_enter_d0i3_iterator, 1406 &d0i3_iter_data); 1407 if (d0i3_iter_data.vif_count == 1) { 1408 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id; 1409 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading; 1410 } else { 1411 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1); 1412 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; 1413 mvm->d0i3_offloading = false; 1414 } 1415 1416 /* make sure we have no running tx while configuring the seqno */ 1417 synchronize_net(); 1418 1419 /* Flush the hw queues, in case something got queued during entry */ 1420 ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm), flags); 1421 if (ret) 1422 return ret; 1423 1424 /* configure wowlan configuration only if needed */ 1425 if (mvm->d0i3_ap_sta_id != IWL_MVM_STATION_COUNT) { 1426 /* wake on beacons only if beacon storing isn't supported */ 1427 if (!fw_has_capa(&mvm->fw->ucode_capa, 1428 IWL_UCODE_TLV_CAPA_BEACON_STORING)) 1429 wowlan_config_cmd.wakeup_filter |= 1430 cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING); 1431 1432 iwl_mvm_wowlan_config_key_params(mvm, 1433 d0i3_iter_data.connected_vif, 1434 true, flags); 1435 1436 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd, 1437 &d0i3_iter_data); 1438 1439 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags, 1440 sizeof(wowlan_config_cmd), 1441 &wowlan_config_cmd); 1442 if (ret) 1443 return ret; 1444 } 1445 1446 return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD, 1447 flags | CMD_MAKE_TRANS_IDLE, 1448 sizeof(d3_cfg_cmd), &d3_cfg_cmd); 1449 } 1450 1451 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac, 1452 struct ieee80211_vif *vif) 1453 { 1454 struct iwl_mvm *mvm = _data; 1455 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO; 1456 1457 IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr); 1458 if (vif->type != NL80211_IFTYPE_STATION || 1459 !vif->bss_conf.assoc) 1460 return; 1461 1462 iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags); 1463 } 1464 1465 struct iwl_mvm_d0i3_exit_work_iter_data { 1466 struct iwl_mvm *mvm; 1467 struct iwl_wowlan_status *status; 1468 u32 wakeup_reasons; 1469 }; 1470 1471 static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac, 1472 struct ieee80211_vif *vif) 1473 { 1474 struct iwl_mvm_d0i3_exit_work_iter_data *data = _data; 1475 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1476 u32 reasons = data->wakeup_reasons; 1477 1478 /* consider only the relevant station interface */ 1479 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc || 1480 data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id) 1481 return; 1482 1483 if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH) 1484 iwl_mvm_connection_loss(data->mvm, vif, "D0i3"); 1485 else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON) 1486 ieee80211_beacon_loss(vif); 1487 else 1488 iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status); 1489 } 1490 1491 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq) 1492 { 1493 struct ieee80211_sta *sta = NULL; 1494 struct iwl_mvm_sta *mvm_ap_sta; 1495 int i; 1496 bool wake_queues = false; 1497 1498 lockdep_assert_held(&mvm->mutex); 1499 1500 spin_lock_bh(&mvm->d0i3_tx_lock); 1501 1502 if (mvm->d0i3_ap_sta_id == IWL_MVM_STATION_COUNT) 1503 goto out; 1504 1505 IWL_DEBUG_RPM(mvm, "re-enqueue packets\n"); 1506 1507 /* get the sta in order to update seq numbers and re-enqueue skbs */ 1508 sta = rcu_dereference_protected( 1509 mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id], 1510 lockdep_is_held(&mvm->mutex)); 1511 1512 if (IS_ERR_OR_NULL(sta)) { 1513 sta = NULL; 1514 goto out; 1515 } 1516 1517 if (mvm->d0i3_offloading && qos_seq) { 1518 /* update qos seq numbers if offloading was enabled */ 1519 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta); 1520 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1521 u16 seq = le16_to_cpu(qos_seq[i]); 1522 /* firmware stores last-used one, we store next one */ 1523 seq += 0x10; 1524 mvm_ap_sta->tid_data[i].seq_number = seq; 1525 } 1526 } 1527 out: 1528 /* re-enqueue (or drop) all packets */ 1529 while (!skb_queue_empty(&mvm->d0i3_tx)) { 1530 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx); 1531 1532 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta)) 1533 ieee80211_free_txskb(mvm->hw, skb); 1534 1535 /* if the skb_queue is not empty, we need to wake queues */ 1536 wake_queues = true; 1537 } 1538 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1539 wake_up(&mvm->d0i3_exit_waitq); 1540 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; 1541 if (wake_queues) 1542 ieee80211_wake_queues(mvm->hw); 1543 1544 spin_unlock_bh(&mvm->d0i3_tx_lock); 1545 } 1546 1547 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk) 1548 { 1549 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work); 1550 struct iwl_host_cmd get_status_cmd = { 1551 .id = WOWLAN_GET_STATUSES, 1552 .flags = CMD_HIGH_PRIO | CMD_WANT_SKB, 1553 }; 1554 struct iwl_mvm_d0i3_exit_work_iter_data iter_data = { 1555 .mvm = mvm, 1556 }; 1557 1558 struct iwl_wowlan_status *status; 1559 int ret; 1560 u32 wakeup_reasons = 0; 1561 __le16 *qos_seq = NULL; 1562 1563 mutex_lock(&mvm->mutex); 1564 ret = iwl_mvm_send_cmd(mvm, &get_status_cmd); 1565 if (ret) 1566 goto out; 1567 1568 if (!get_status_cmd.resp_pkt) 1569 goto out; 1570 1571 status = (void *)get_status_cmd.resp_pkt->data; 1572 wakeup_reasons = le32_to_cpu(status->wakeup_reasons); 1573 qos_seq = status->qos_seq_ctr; 1574 1575 IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons); 1576 1577 iter_data.wakeup_reasons = wakeup_reasons; 1578 iter_data.status = status; 1579 ieee80211_iterate_active_interfaces(mvm->hw, 1580 IEEE80211_IFACE_ITER_NORMAL, 1581 iwl_mvm_d0i3_exit_work_iter, 1582 &iter_data); 1583 out: 1584 iwl_mvm_d0i3_enable_tx(mvm, qos_seq); 1585 1586 IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n", 1587 wakeup_reasons); 1588 1589 /* qos_seq might point inside resp_pkt, so free it only now */ 1590 if (get_status_cmd.resp_pkt) 1591 iwl_free_resp(&get_status_cmd); 1592 1593 /* the FW might have updated the regdomain */ 1594 iwl_mvm_update_changed_regdom(mvm); 1595 1596 iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK); 1597 mutex_unlock(&mvm->mutex); 1598 } 1599 1600 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm) 1601 { 1602 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE | 1603 CMD_WAKE_UP_TRANS; 1604 int ret; 1605 1606 IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n"); 1607 1608 if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR)) 1609 return -EINVAL; 1610 1611 mutex_lock(&mvm->d0i3_suspend_mutex); 1612 if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) { 1613 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n"); 1614 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags); 1615 mutex_unlock(&mvm->d0i3_suspend_mutex); 1616 return 0; 1617 } 1618 mutex_unlock(&mvm->d0i3_suspend_mutex); 1619 1620 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL); 1621 if (ret) 1622 goto out; 1623 1624 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1625 IEEE80211_IFACE_ITER_NORMAL, 1626 iwl_mvm_exit_d0i3_iterator, 1627 mvm); 1628 out: 1629 schedule_work(&mvm->d0i3_exit_work); 1630 return ret; 1631 } 1632 1633 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode) 1634 { 1635 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1636 1637 iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK); 1638 return _iwl_mvm_exit_d0i3(mvm); 1639 } 1640 1641 #define IWL_MVM_COMMON_OPS \ 1642 /* these could be differentiated */ \ 1643 .async_cb = iwl_mvm_async_cb, \ 1644 .queue_full = iwl_mvm_stop_sw_queue, \ 1645 .queue_not_full = iwl_mvm_wake_sw_queue, \ 1646 .hw_rf_kill = iwl_mvm_set_hw_rfkill_state, \ 1647 .free_skb = iwl_mvm_free_skb, \ 1648 .nic_error = iwl_mvm_nic_error, \ 1649 .cmd_queue_full = iwl_mvm_cmd_queue_full, \ 1650 .nic_config = iwl_mvm_nic_config, \ 1651 .enter_d0i3 = iwl_mvm_enter_d0i3, \ 1652 .exit_d0i3 = iwl_mvm_exit_d0i3, \ 1653 /* as we only register one, these MUST be common! */ \ 1654 .start = iwl_op_mode_mvm_start, \ 1655 .stop = iwl_op_mode_mvm_stop 1656 1657 static const struct iwl_op_mode_ops iwl_mvm_ops = { 1658 IWL_MVM_COMMON_OPS, 1659 .rx = iwl_mvm_rx, 1660 }; 1661 1662 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode, 1663 struct napi_struct *napi, 1664 struct iwl_rx_cmd_buffer *rxb, 1665 unsigned int queue) 1666 { 1667 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); 1668 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1669 1670 if (unlikely(pkt->hdr.cmd == FRAME_RELEASE)) 1671 iwl_mvm_rx_frame_release(mvm, napi, rxb, queue); 1672 else if (unlikely(pkt->hdr.cmd == RX_QUEUES_NOTIFICATION && 1673 pkt->hdr.group_id == DATA_PATH_GROUP)) 1674 iwl_mvm_rx_queue_notif(mvm, rxb, queue); 1675 else 1676 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue); 1677 } 1678 1679 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = { 1680 IWL_MVM_COMMON_OPS, 1681 .rx = iwl_mvm_rx_mq, 1682 .rx_rss = iwl_mvm_rx_mq_rss, 1683 }; 1684