drivers/net/wireless/intel/iwlwifi/mvm/ops.c

   1 /******************************************************************************
   2  *
   3  * This file is provided under a dual BSD/GPLv2 license.  When using or
   4  * redistributing this file, you may do so under either license.
   5  *
   6  * GPL LICENSE SUMMARY
   7  *
   8  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
   9  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  10  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  11  * Copyright(c) 2018        Intel Corporation
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of version 2 of the GNU General Public License as
  15  * published by the Free Software Foundation.
  16  *
  17  * This program is distributed in the hope that it will be useful, but
  18  * WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  20  * General Public License for more details.
  21  *
  22  * The full GNU General Public License is included in this distribution
  23  * in the file called COPYING.
  24  *
  25  * Contact Information:
  26  *  Intel Linux Wireless <linuxwifi@intel.com>
  27  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  28  *
  29  * BSD LICENSE
  30  *
  31  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  32  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  33  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  34  * Copyright(c) 2018        Intel Corporation
  35  * All rights reserved.
  36  *
  37  * Redistribution and use in source and binary forms, with or without
  38  * modification, are permitted provided that the following conditions
  39  * are met:
  40  *
  41  *  * Redistributions of source code must retain the above copyright
  42  *    notice, this list of conditions and the following disclaimer.
  43  *  * Redistributions in binary form must reproduce the above copyright
  44  *    notice, this list of conditions and the following disclaimer in
  45  *    the documentation and/or other materials provided with the
  46  *    distribution.
  47  *  * Neither the name Intel Corporation nor the names of its
  48  *    contributors may be used to endorse or promote products derived
  49  *    from this software without specific prior written permission.
  50  *
  51  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  52  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  53  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  54  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  55  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  56  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  57  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  58  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  59  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  60  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  61  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  62  *
  63  *****************************************************************************/
  64 #include <linux/module.h>
  65 #include <linux/vmalloc.h>
  66 #include <net/mac80211.h>
  67
  68 #include "fw/notif-wait.h"
  69 #include "iwl-trans.h"
  70 #include "iwl-op-mode.h"
  71 #include "fw/img.h"
  72 #include "iwl-debug.h"
  73 #include "iwl-drv.h"
  74 #include "iwl-modparams.h"
  75 #include "mvm.h"
  76 #include "iwl-phy-db.h"
  77 #include "iwl-eeprom-parse.h"
  78 #include "iwl-csr.h"
  79 #include "iwl-io.h"
  80 #include "iwl-prph.h"
  81 #include "rs.h"
  82 #include "fw/api/scan.h"
  83 #include "time-event.h"
  84 #include "fw-api.h"
  85 #include "fw/api/scan.h"
  86 #include "fw/acpi.h"
  87
  88 #define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux"
  89 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  90 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  91 MODULE_LICENSE("GPL");
  92
  93 static const struct iwl_op_mode_ops iwl_mvm_ops;
  94 static const struct iwl_op_mode_ops iwl_mvm_ops_mq;
  95
  96 struct iwl_mvm_mod_params iwlmvm_mod_params = {
  97         .power_scheme = IWL_POWER_SCHEME_BPS,
  98         .tfd_q_hang_detect = true
  99         /* rest of fields are 0 by default */
 100 };
 101
 102 module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, 0444);
 103 MODULE_PARM_DESC(init_dbg,
 104                  "set to true to debug an ASSERT in INIT fw (default: false");
 105 module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, 0444);
 106 MODULE_PARM_DESC(power_scheme,
 107                  "power management scheme: 1-active, 2-balanced, 3-low power, default: 2");
 108 module_param_named(tfd_q_hang_detect, iwlmvm_mod_params.tfd_q_hang_detect,
 109                    bool, 0444);
 110 MODULE_PARM_DESC(tfd_q_hang_detect,
 111                  "TFD queues hang detection (default: true");
 112
 113 /*
 114  * module init and exit functions
 115  */
 116 static int __init iwl_mvm_init(void)
 117 {
 118         int ret;
 119
 120         ret = iwl_mvm_rate_control_register();
 121         if (ret) {
 122                 pr_err("Unable to register rate control algorithm: %d\n", ret);
 123                 return ret;
 124         }
 125
 126         ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops);
 127         if (ret)
 128                 pr_err("Unable to register MVM op_mode: %d\n", ret);
 129
 130         return ret;
 131 }
 132 module_init(iwl_mvm_init);
 133
 134 static void __exit iwl_mvm_exit(void)
 135 {
 136         iwl_opmode_deregister("iwlmvm");
 137         iwl_mvm_rate_control_unregister();
 138 }
 139 module_exit(iwl_mvm_exit);
 140
 141 static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode)
 142 {
 143         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 144         u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash;
 145         u32 reg_val = 0;
 146         u32 phy_config = iwl_mvm_get_phy_config(mvm);
 147
 148         radio_cfg_type = (phy_config & FW_PHY_CFG_RADIO_TYPE) >>
 149                          FW_PHY_CFG_RADIO_TYPE_POS;
 150         radio_cfg_step = (phy_config & FW_PHY_CFG_RADIO_STEP) >>
 151                          FW_PHY_CFG_RADIO_STEP_POS;
 152         radio_cfg_dash = (phy_config & FW_PHY_CFG_RADIO_DASH) >>
 153                          FW_PHY_CFG_RADIO_DASH_POS;
 154
 155         /* SKU control */
 156         reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) <<
 157                                 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP;
 158         reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) <<
 159                                 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH;
 160
 161         /* radio configuration */
 162         reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE;
 163         reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP;
 164         reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
 165
 166         WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) &
 167                  ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE);
 168
 169         /*
 170          * TODO: Bits 7-8 of CSR in 8000 HW family and higher set the ADC
 171          * sampling, and shouldn't be set to any non-zero value.
 172          * The same is supposed to be true of the other HW, but unsetting
 173          * them (such as the 7260) causes automatic tests to fail on seemingly
 174          * unrelated errors. Need to further investigate this, but for now
 175          * we'll separate cases.
 176          */
 177         if (mvm->trans->cfg->device_family < IWL_DEVICE_FAMILY_8000)
 178                 reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI;
 179
 180         if (iwl_fw_dbg_is_d3_debug_enabled(&mvm->fwrt))
 181                 reg_val |= CSR_HW_IF_CONFIG_REG_D3_DEBUG;
 182
 183         iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG,
 184                                 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
 185                                 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP |
 186                                 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
 187                                 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
 188                                 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH |
 189                                 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
 190                                 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI   |
 191                                 CSR_HW_IF_CONFIG_REG_D3_DEBUG,
 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_GRP(DATA_PATH_GROUP, TLC_MNG_UPDATE_NOTIF,
 253                        iwl_mvm_tlc_update_notif, RX_HANDLER_SYNC),
 254
 255         RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif,
 256                    RX_HANDLER_ASYNC_LOCKED),
 257         RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif,
 258                    RX_HANDLER_ASYNC_LOCKED),
 259         RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics,
 260                    RX_HANDLER_ASYNC_LOCKED),
 261
 262         RX_HANDLER(BA_WINDOW_STATUS_NOTIFICATION_ID,
 263                    iwl_mvm_window_status_notif, RX_HANDLER_SYNC),
 264
 265         RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif,
 266                    RX_HANDLER_SYNC),
 267         RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc,
 268                    RX_HANDLER_ASYNC_LOCKED),
 269
 270         RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, RX_HANDLER_SYNC),
 271
 272         RX_HANDLER(SCAN_ITERATION_COMPLETE,
 273                    iwl_mvm_rx_lmac_scan_iter_complete_notif, RX_HANDLER_SYNC),
 274         RX_HANDLER(SCAN_OFFLOAD_COMPLETE,
 275                    iwl_mvm_rx_lmac_scan_complete_notif,
 276                    RX_HANDLER_ASYNC_LOCKED),
 277         RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_match_found,
 278                    RX_HANDLER_SYNC),
 279         RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif,
 280                    RX_HANDLER_ASYNC_LOCKED),
 281         RX_HANDLER(SCAN_ITERATION_COMPLETE_UMAC,
 282                    iwl_mvm_rx_umac_scan_iter_complete_notif, RX_HANDLER_SYNC),
 283
 284         RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif,
 285                    RX_HANDLER_SYNC),
 286
 287         RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
 288                    RX_HANDLER_SYNC),
 289
 290         RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, RX_HANDLER_SYNC),
 291         RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION,
 292                    iwl_mvm_power_uapsd_misbehaving_ap_notif, RX_HANDLER_SYNC),
 293         RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif,
 294                    RX_HANDLER_ASYNC_LOCKED),
 295         RX_HANDLER_GRP(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE,
 296                        iwl_mvm_temp_notif, RX_HANDLER_ASYNC_UNLOCKED),
 297         RX_HANDLER_GRP(PHY_OPS_GROUP, CT_KILL_NOTIFICATION,
 298                        iwl_mvm_ct_kill_notif, RX_HANDLER_SYNC),
 299
 300         RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif,
 301                    RX_HANDLER_ASYNC_LOCKED),
 302         RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif,
 303                    RX_HANDLER_SYNC),
 304         RX_HANDLER(TOF_NOTIFICATION, iwl_mvm_tof_resp_handler,
 305                    RX_HANDLER_ASYNC_LOCKED),
 306         RX_HANDLER_GRP(DEBUG_GROUP, MFU_ASSERT_DUMP_NTF,
 307                        iwl_mvm_mfu_assert_dump_notif, RX_HANDLER_SYNC),
 308         RX_HANDLER_GRP(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF,
 309                        iwl_mvm_rx_stored_beacon_notif, RX_HANDLER_SYNC),
 310         RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF,
 311                        iwl_mvm_mu_mimo_grp_notif, RX_HANDLER_SYNC),
 312         RX_HANDLER_GRP(DATA_PATH_GROUP, STA_PM_NOTIF,
 313                        iwl_mvm_sta_pm_notif, RX_HANDLER_SYNC),
 314 };
 315 #undef RX_HANDLER
 316 #undef RX_HANDLER_GRP
 317
 318 /* Please keep this array *SORTED* by hex value.
 319  * Access is done through binary search
 320  */
 321 static const struct iwl_hcmd_names iwl_mvm_legacy_names[] = {
 322         HCMD_NAME(MVM_ALIVE),
 323         HCMD_NAME(REPLY_ERROR),
 324         HCMD_NAME(ECHO_CMD),
 325         HCMD_NAME(INIT_COMPLETE_NOTIF),
 326         HCMD_NAME(PHY_CONTEXT_CMD),
 327         HCMD_NAME(DBG_CFG),
 328         HCMD_NAME(SCAN_CFG_CMD),
 329         HCMD_NAME(SCAN_REQ_UMAC),
 330         HCMD_NAME(SCAN_ABORT_UMAC),
 331         HCMD_NAME(SCAN_COMPLETE_UMAC),
 332         HCMD_NAME(TOF_CMD),
 333         HCMD_NAME(TOF_NOTIFICATION),
 334         HCMD_NAME(BA_WINDOW_STATUS_NOTIFICATION_ID),
 335         HCMD_NAME(ADD_STA_KEY),
 336         HCMD_NAME(ADD_STA),
 337         HCMD_NAME(REMOVE_STA),
 338         HCMD_NAME(FW_GET_ITEM_CMD),
 339         HCMD_NAME(TX_CMD),
 340         HCMD_NAME(SCD_QUEUE_CFG),
 341         HCMD_NAME(TXPATH_FLUSH),
 342         HCMD_NAME(MGMT_MCAST_KEY),
 343         HCMD_NAME(WEP_KEY),
 344         HCMD_NAME(SHARED_MEM_CFG),
 345         HCMD_NAME(TDLS_CHANNEL_SWITCH_CMD),
 346         HCMD_NAME(MAC_CONTEXT_CMD),
 347         HCMD_NAME(TIME_EVENT_CMD),
 348         HCMD_NAME(TIME_EVENT_NOTIFICATION),
 349         HCMD_NAME(BINDING_CONTEXT_CMD),
 350         HCMD_NAME(TIME_QUOTA_CMD),
 351         HCMD_NAME(NON_QOS_TX_COUNTER_CMD),
 352         HCMD_NAME(LEDS_CMD),
 353         HCMD_NAME(LQ_CMD),
 354         HCMD_NAME(FW_PAGING_BLOCK_CMD),
 355         HCMD_NAME(SCAN_OFFLOAD_REQUEST_CMD),
 356         HCMD_NAME(SCAN_OFFLOAD_ABORT_CMD),
 357         HCMD_NAME(HOT_SPOT_CMD),
 358         HCMD_NAME(SCAN_OFFLOAD_PROFILES_QUERY_CMD),
 359         HCMD_NAME(BT_COEX_UPDATE_REDUCED_TXP),
 360         HCMD_NAME(BT_COEX_CI),
 361         HCMD_NAME(PHY_CONFIGURATION_CMD),
 362         HCMD_NAME(CALIB_RES_NOTIF_PHY_DB),
 363         HCMD_NAME(PHY_DB_CMD),
 364         HCMD_NAME(SCAN_OFFLOAD_COMPLETE),
 365         HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_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(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_NOTIFICATION),
 380         HCMD_NAME(MISSED_BEACONS_NOTIFICATION),
 381         HCMD_NAME(TDLS_CONFIG_CMD),
 382         HCMD_NAME(MAC_PM_POWER_TABLE),
 383         HCMD_NAME(TDLS_CHANNEL_SWITCH_NOTIFICATION),
 384         HCMD_NAME(MFUART_LOAD_NOTIFICATION),
 385         HCMD_NAME(RSS_CONFIG_CMD),
 386         HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC),
 387         HCMD_NAME(REPLY_RX_PHY_CMD),
 388         HCMD_NAME(REPLY_RX_MPDU_CMD),
 389         HCMD_NAME(FRAME_RELEASE),
 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_PROFILE_NOTIFICATION),
 395         HCMD_NAME(BCAST_FILTER_CMD),
 396         HCMD_NAME(MCAST_FILTER_CMD),
 397         HCMD_NAME(REPLY_SF_CFG_CMD),
 398         HCMD_NAME(REPLY_BEACON_FILTERING_CMD),
 399         HCMD_NAME(D3_CONFIG_CMD),
 400         HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD),
 401         HCMD_NAME(OFFLOADS_QUERY_CMD),
 402         HCMD_NAME(REMOTE_WAKE_CONFIG_CMD),
 403         HCMD_NAME(MATCH_FOUND_NOTIFICATION),
 404         HCMD_NAME(DTS_MEASUREMENT_NOTIFICATION),
 405         HCMD_NAME(WOWLAN_PATTERNS),
 406         HCMD_NAME(WOWLAN_CONFIGURATION),
 407         HCMD_NAME(WOWLAN_TSC_RSC_PARAM),
 408         HCMD_NAME(WOWLAN_TKIP_PARAM),
 409         HCMD_NAME(WOWLAN_KEK_KCK_MATERIAL),
 410         HCMD_NAME(WOWLAN_GET_STATUSES),
 411         HCMD_NAME(SCAN_ITERATION_COMPLETE),
 412         HCMD_NAME(D0I3_END_CMD),
 413         HCMD_NAME(LTR_CONFIG),
 414 };
 415
 416 /* Please keep this array *SORTED* by hex value.
 417  * Access is done through binary search
 418  */
 419 static const struct iwl_hcmd_names iwl_mvm_system_names[] = {
 420         HCMD_NAME(SHARED_MEM_CFG_CMD),
 421         HCMD_NAME(INIT_EXTENDED_CFG_CMD),
 422 };
 423
 424 /* Please keep this array *SORTED* by hex value.
 425  * Access is done through binary search
 426  */
 427 static const struct iwl_hcmd_names iwl_mvm_mac_conf_names[] = {
 428         HCMD_NAME(CHANNEL_SWITCH_NOA_NOTIF),
 429 };
 430
 431 /* Please keep this array *SORTED* by hex value.
 432  * Access is done through binary search
 433  */
 434 static const struct iwl_hcmd_names iwl_mvm_phy_names[] = {
 435         HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE),
 436         HCMD_NAME(CTDP_CONFIG_CMD),
 437         HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD),
 438         HCMD_NAME(GEO_TX_POWER_LIMIT),
 439         HCMD_NAME(CT_KILL_NOTIFICATION),
 440         HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE),
 441 };
 442
 443 /* Please keep this array *SORTED* by hex value.
 444  * Access is done through binary search
 445  */
 446 static const struct iwl_hcmd_names iwl_mvm_data_path_names[] = {
 447         HCMD_NAME(DQA_ENABLE_CMD),
 448         HCMD_NAME(UPDATE_MU_GROUPS_CMD),
 449         HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD),
 450         HCMD_NAME(STA_HE_CTXT_CMD),
 451         HCMD_NAME(RFH_QUEUE_CONFIG_CMD),
 452         HCMD_NAME(STA_PM_NOTIF),
 453         HCMD_NAME(MU_GROUP_MGMT_NOTIF),
 454         HCMD_NAME(RX_QUEUES_NOTIFICATION),
 455 };
 456
 457 /* Please keep this array *SORTED* by hex value.
 458  * Access is done through binary search
 459  */
 460 static const struct iwl_hcmd_names iwl_mvm_debug_names[] = {
 461         HCMD_NAME(MFU_ASSERT_DUMP_NTF),
 462 };
 463
 464 /* Please keep this array *SORTED* by hex value.
 465  * Access is done through binary search
 466  */
 467 static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = {
 468         HCMD_NAME(STORED_BEACON_NTF),
 469 };
 470
 471 /* Please keep this array *SORTED* by hex value.
 472  * Access is done through binary search
 473  */
 474 static const struct iwl_hcmd_names iwl_mvm_regulatory_and_nvm_names[] = {
 475         HCMD_NAME(NVM_ACCESS_COMPLETE),
 476         HCMD_NAME(NVM_GET_INFO),
 477 };
 478
 479 static const struct iwl_hcmd_arr iwl_mvm_groups[] = {
 480         [LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
 481         [LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
 482         [SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names),
 483         [MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names),
 484         [PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names),
 485         [DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names),
 486         [PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names),
 487         [REGULATORY_AND_NVM_GROUP] =
 488                 HCMD_ARR(iwl_mvm_regulatory_and_nvm_names),
 489 };
 490
 491 /* this forward declaration can avoid to export the function */
 492 static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
 493 #ifdef CONFIG_PM
 494 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk);
 495 #endif
 496
 497 static u32 iwl_mvm_min_backoff(struct iwl_mvm *mvm)
 498 {
 499         const struct iwl_pwr_tx_backoff *backoff = mvm->cfg->pwr_tx_backoffs;
 500         u64 dflt_pwr_limit;
 501
 502         if (!backoff)
 503                 return 0;
 504
 505         dflt_pwr_limit = iwl_acpi_get_pwr_limit(mvm->dev);
 506
 507         while (backoff->pwr) {
 508                 if (dflt_pwr_limit >= backoff->pwr)
 509                         return backoff->backoff;
 510
 511                 backoff++;
 512         }
 513
 514         return 0;
 515 }
 516
 517 static void iwl_mvm_tx_unblock_dwork(struct work_struct *work)
 518 {
 519         struct iwl_mvm *mvm =
 520                 container_of(work, struct iwl_mvm, cs_tx_unblock_dwork.work);
 521         struct ieee80211_vif *tx_blocked_vif;
 522         struct iwl_mvm_vif *mvmvif;
 523
 524         mutex_lock(&mvm->mutex);
 525
 526         tx_blocked_vif =
 527                 rcu_dereference_protected(mvm->csa_tx_blocked_vif,
 528                                           lockdep_is_held(&mvm->mutex));
 529
 530         if (!tx_blocked_vif)
 531                 goto unlock;
 532
 533         mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif);
 534         iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
 535         RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
 536 unlock:
 537         mutex_unlock(&mvm->mutex);
 538 }
 539
 540 static int iwl_mvm_fwrt_dump_start(void *ctx)
 541 {
 542         struct iwl_mvm *mvm = ctx;
 543         int ret;
 544
 545         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
 546         if (ret)
 547                 return ret;
 548
 549         mutex_lock(&mvm->mutex);
 550
 551         return 0;
 552 }
 553
 554 static void iwl_mvm_fwrt_dump_end(void *ctx)
 555 {
 556         struct iwl_mvm *mvm = ctx;
 557
 558         mutex_unlock(&mvm->mutex);
 559
 560         iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
 561 }
 562
 563 static bool iwl_mvm_fwrt_fw_running(void *ctx)
 564 {
 565         return iwl_mvm_firmware_running(ctx);
 566 }
 567
 568 static int iwl_mvm_fwrt_send_hcmd(void *ctx, struct iwl_host_cmd *host_cmd)
 569 {
 570         struct iwl_mvm *mvm = (struct iwl_mvm *)ctx;
 571         int ret;
 572
 573         mutex_lock(&mvm->mutex);
 574         ret = iwl_mvm_send_cmd(mvm, host_cmd);
 575         mutex_unlock(&mvm->mutex);
 576
 577         return ret;
 578 }
 579
 580 static const struct iwl_fw_runtime_ops iwl_mvm_fwrt_ops = {
 581         .dump_start = iwl_mvm_fwrt_dump_start,
 582         .dump_end = iwl_mvm_fwrt_dump_end,
 583         .fw_running = iwl_mvm_fwrt_fw_running,
 584         .send_hcmd = iwl_mvm_fwrt_send_hcmd,
 585 };
 586
 587 static struct iwl_op_mode *
 588 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
 589                       const struct iwl_fw *fw, struct dentry *dbgfs_dir)
 590 {
 591         struct ieee80211_hw *hw;
 592         struct iwl_op_mode *op_mode;
 593         struct iwl_mvm *mvm;
 594         struct iwl_trans_config trans_cfg = {};
 595         static const u8 no_reclaim_cmds[] = {
 596                 TX_CMD,
 597         };
 598         int err, scan_size;
 599         u32 min_backoff;
 600         enum iwl_amsdu_size rb_size_default;
 601
 602         /*
 603          * We use IWL_MVM_STATION_COUNT to check the validity of the station
 604          * index all over the driver - check that its value corresponds to the
 605          * array size.
 606          */
 607         BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT);
 608
 609         /********************************
 610          * 1. Allocating and configuring HW data
 611          ********************************/
 612         hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
 613                                 sizeof(struct iwl_mvm),
 614                                 &iwl_mvm_hw_ops);
 615         if (!hw)
 616                 return NULL;
 617
 618         if (cfg->max_rx_agg_size)
 619                 hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size;
 620         else
 621                 hw->max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
 622
 623         if (cfg->max_tx_agg_size)
 624                 hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size;
 625         else
 626                 hw->max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
 627
 628         op_mode = hw->priv;
 629
 630         mvm = IWL_OP_MODE_GET_MVM(op_mode);
 631         mvm->dev = trans->dev;
 632         mvm->trans = trans;
 633         mvm->cfg = cfg;
 634         mvm->fw = fw;
 635         mvm->hw = hw;
 636
 637         iwl_fw_runtime_init(&mvm->fwrt, trans, fw, &iwl_mvm_fwrt_ops, mvm,
 638                             dbgfs_dir);
 639
 640         mvm->init_status = 0;
 641
 642         if (iwl_mvm_has_new_rx_api(mvm)) {
 643                 op_mode->ops = &iwl_mvm_ops_mq;
 644                 trans->rx_mpdu_cmd_hdr_size =
 645                         (trans->cfg->device_family >=
 646                          IWL_DEVICE_FAMILY_22560) ?
 647                         sizeof(struct iwl_rx_mpdu_desc) :
 648                         IWL_RX_DESC_SIZE_V1;
 649         } else {
 650                 op_mode->ops = &iwl_mvm_ops;
 651                 trans->rx_mpdu_cmd_hdr_size =
 652                         sizeof(struct iwl_rx_mpdu_res_start);
 653
 654                 if (WARN_ON(trans->num_rx_queues > 1))
 655                         goto out_free;
 656         }
 657
 658         mvm->fw_restart = iwlwifi_mod_params.fw_restart ? -1 : 0;
 659
 660         mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE;
 661         mvm->snif_queue = IWL_MVM_DQA_INJECT_MONITOR_QUEUE;
 662         mvm->probe_queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE;
 663         mvm->p2p_dev_queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE;
 664
 665         mvm->sf_state = SF_UNINIT;
 666         if (iwl_mvm_has_unified_ucode(mvm))
 667                 iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_REGULAR);
 668         else
 669                 iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_INIT);
 670         mvm->drop_bcn_ap_mode = true;
 671
 672         mutex_init(&mvm->mutex);
 673         mutex_init(&mvm->d0i3_suspend_mutex);
 674         spin_lock_init(&mvm->async_handlers_lock);
 675         INIT_LIST_HEAD(&mvm->time_event_list);
 676         INIT_LIST_HEAD(&mvm->aux_roc_te_list);
 677         INIT_LIST_HEAD(&mvm->async_handlers_list);
 678         spin_lock_init(&mvm->time_event_lock);
 679
 680         INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
 681         INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
 682 #ifdef CONFIG_PM
 683         INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
 684 #endif
 685         INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
 686         INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk);
 687         INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk);
 688
 689         spin_lock_init(&mvm->d0i3_tx_lock);
 690         spin_lock_init(&mvm->refs_lock);
 691         skb_queue_head_init(&mvm->d0i3_tx);
 692         init_waitqueue_head(&mvm->d0i3_exit_waitq);
 693         init_waitqueue_head(&mvm->rx_sync_waitq);
 694
 695         atomic_set(&mvm->queue_sync_counter, 0);
 696
 697         SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
 698
 699         spin_lock_init(&mvm->tcm.lock);
 700         INIT_DELAYED_WORK(&mvm->tcm.work, iwl_mvm_tcm_work);
 701         mvm->tcm.ts = jiffies;
 702         mvm->tcm.ll_ts = jiffies;
 703         mvm->tcm.uapsd_nonagg_ts = jiffies;
 704
 705         INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork);
 706
 707         /*
 708          * Populate the state variables that the transport layer needs
 709          * to know about.
 710          */
 711         trans_cfg.op_mode = op_mode;
 712         trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
 713         trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
 714
 715         if (mvm->trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560)
 716                 rb_size_default = IWL_AMSDU_2K;
 717         else
 718                 rb_size_default = IWL_AMSDU_4K;
 719
 720         switch (iwlwifi_mod_params.amsdu_size) {
 721         case IWL_AMSDU_DEF:
 722                 trans_cfg.rx_buf_size = rb_size_default;
 723                 break;
 724         case IWL_AMSDU_4K:
 725                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 726                 break;
 727         case IWL_AMSDU_8K:
 728                 trans_cfg.rx_buf_size = IWL_AMSDU_8K;
 729                 break;
 730         case IWL_AMSDU_12K:
 731                 trans_cfg.rx_buf_size = IWL_AMSDU_12K;
 732                 break;
 733         default:
 734                 pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME,
 735                        iwlwifi_mod_params.amsdu_size);
 736                 trans_cfg.rx_buf_size = rb_size_default;
 737         }
 738
 739         trans->wide_cmd_header = true;
 740         trans_cfg.bc_table_dword =
 741                 mvm->trans->cfg->device_family < IWL_DEVICE_FAMILY_22560;
 742
 743         trans_cfg.command_groups = iwl_mvm_groups;
 744         trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups);
 745
 746         trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE;
 747         trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
 748         trans_cfg.scd_set_active = true;
 749
 750         trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info,
 751                                           driver_data[2]);
 752
 753         trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD;
 754
 755         /* Set a short watchdog for the command queue */
 756         trans_cfg.cmd_q_wdg_timeout =
 757                 iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
 758
 759         snprintf(mvm->hw->wiphy->fw_version,
 760                  sizeof(mvm->hw->wiphy->fw_version),
 761                  "%s", fw->fw_version);
 762
 763         /* Configure transport layer */
 764         iwl_trans_configure(mvm->trans, &trans_cfg);
 765
 766         trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
 767         trans->dbg_dest_tlv = mvm->fw->dbg.dest_tlv;
 768         trans->dbg_n_dest_reg = mvm->fw->dbg.n_dest_reg;
 769         memcpy(trans->dbg_conf_tlv, mvm->fw->dbg.conf_tlv,
 770                sizeof(trans->dbg_conf_tlv));
 771         trans->dbg_trigger_tlv = mvm->fw->dbg.trigger_tlv;
 772         trans->dbg_dump_mask = mvm->fw->dbg.dump_mask;
 773
 774         trans->iml = mvm->fw->iml;
 775         trans->iml_len = mvm->fw->iml_len;
 776
 777         /* set up notification wait support */
 778         iwl_notification_wait_init(&mvm->notif_wait);
 779
 780         /* Init phy db */
 781         mvm->phy_db = iwl_phy_db_init(trans);
 782         if (!mvm->phy_db) {
 783                 IWL_ERR(mvm, "Cannot init phy_db\n");
 784                 goto out_free;
 785         }
 786
 787         IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
 788                  mvm->cfg->name, mvm->trans->hw_rev);
 789
 790         if (iwlwifi_mod_params.nvm_file)
 791                 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
 792         else
 793                 IWL_DEBUG_EEPROM(mvm->trans->dev,
 794                                  "working without external nvm file\n");
 795
 796         err = iwl_trans_start_hw(mvm->trans);
 797         if (err)
 798                 goto out_free;
 799
 800         mutex_lock(&mvm->mutex);
 801         iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE);
 802         err = iwl_run_init_mvm_ucode(mvm, true);
 803         if (test_bit(IWL_FWRT_STATUS_WAIT_ALIVE, &mvm->fwrt.status))
 804                 iwl_fw_alive_error_dump(&mvm->fwrt);
 805         if (!iwlmvm_mod_params.init_dbg || !err)
 806                 iwl_mvm_stop_device(mvm);
 807         iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE);
 808         mutex_unlock(&mvm->mutex);
 809         if (err < 0) {
 810                 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
 811                 goto out_free;
 812         }
 813
 814         scan_size = iwl_mvm_scan_size(mvm);
 815
 816         mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
 817         if (!mvm->scan_cmd)
 818                 goto out_free;
 819
 820         /* Set EBS as successful as long as not stated otherwise by the FW. */
 821         mvm->last_ebs_successful = true;
 822
 823         err = iwl_mvm_mac_setup_register(mvm);
 824         if (err)
 825                 goto out_free;
 826         mvm->hw_registered = true;
 827
 828         min_backoff = iwl_mvm_min_backoff(mvm);
 829         iwl_mvm_thermal_initialize(mvm, min_backoff);
 830
 831         err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
 832         if (err)
 833                 goto out_unregister;
 834
 835         if (!iwl_mvm_has_new_rx_stats_api(mvm))
 836                 memset(&mvm->rx_stats_v3, 0,
 837                        sizeof(struct mvm_statistics_rx_v3));
 838         else
 839                 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
 840
 841         /* The transport always starts with a taken reference, we can
 842          * release it now if d0i3 is supported */
 843         if (iwl_mvm_is_d0i3_supported(mvm))
 844                 iwl_trans_unref(mvm->trans);
 845
 846         iwl_mvm_tof_init(mvm);
 847
 848         iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx);
 849
 850         return op_mode;
 851
 852  out_unregister:
 853         if (iwlmvm_mod_params.init_dbg)
 854                 return op_mode;
 855
 856         ieee80211_unregister_hw(mvm->hw);
 857         mvm->hw_registered = false;
 858         iwl_mvm_leds_exit(mvm);
 859         iwl_mvm_thermal_exit(mvm);
 860  out_free:
 861         iwl_fw_flush_dump(&mvm->fwrt);
 862
 863         if (iwlmvm_mod_params.init_dbg)
 864                 return op_mode;
 865         iwl_phy_db_free(mvm->phy_db);
 866         kfree(mvm->scan_cmd);
 867         iwl_trans_op_mode_leave(trans);
 868
 869         ieee80211_free_hw(mvm->hw);
 870         return NULL;
 871 }
 872
 873 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
 874 {
 875         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 876         int i;
 877
 878         /* If d0i3 is supported, we have released the reference that
 879          * the transport started with, so we should take it back now
 880          * that we are leaving.
 881          */
 882         if (iwl_mvm_is_d0i3_supported(mvm))
 883                 iwl_trans_ref(mvm->trans);
 884
 885         iwl_mvm_leds_exit(mvm);
 886
 887         iwl_mvm_thermal_exit(mvm);
 888
 889         if (mvm->init_status & IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE) {
 890                 ieee80211_unregister_hw(mvm->hw);
 891                 mvm->init_status &= ~IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE;
 892         }
 893
 894         kfree(mvm->scan_cmd);
 895         kfree(mvm->mcast_filter_cmd);
 896         mvm->mcast_filter_cmd = NULL;
 897
 898 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
 899         kfree(mvm->d3_resume_sram);
 900 #endif
 901         iwl_trans_op_mode_leave(mvm->trans);
 902
 903         iwl_phy_db_free(mvm->phy_db);
 904         mvm->phy_db = NULL;
 905
 906         kfree(mvm->nvm_data);
 907         for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
 908                 kfree(mvm->nvm_sections[i].data);
 909
 910         cancel_delayed_work_sync(&mvm->tcm.work);
 911
 912         iwl_mvm_tof_clean(mvm);
 913
 914         mutex_destroy(&mvm->mutex);
 915         mutex_destroy(&mvm->d0i3_suspend_mutex);
 916
 917         ieee80211_free_hw(mvm->hw);
 918 }
 919
 920 struct iwl_async_handler_entry {
 921         struct list_head list;
 922         struct iwl_rx_cmd_buffer rxb;
 923         enum iwl_rx_handler_context context;
 924         void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
 925 };
 926
 927 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
 928 {
 929         struct iwl_async_handler_entry *entry, *tmp;
 930
 931         spin_lock_bh(&mvm->async_handlers_lock);
 932         list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
 933                 iwl_free_rxb(&entry->rxb);
 934                 list_del(&entry->list);
 935                 kfree(entry);
 936         }
 937         spin_unlock_bh(&mvm->async_handlers_lock);
 938 }
 939
 940 static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
 941 {
 942         struct iwl_mvm *mvm =
 943                 container_of(wk, struct iwl_mvm, async_handlers_wk);
 944         struct iwl_async_handler_entry *entry, *tmp;
 945         LIST_HEAD(local_list);
 946
 947         /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
 948
 949         /*
 950          * Sync with Rx path with a lock. Remove all the entries from this list,
 951          * add them to a local one (lock free), and then handle them.
 952          */
 953         spin_lock_bh(&mvm->async_handlers_lock);
 954         list_splice_init(&mvm->async_handlers_list, &local_list);
 955         spin_unlock_bh(&mvm->async_handlers_lock);
 956
 957         list_for_each_entry_safe(entry, tmp, &local_list, list) {
 958                 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
 959                         mutex_lock(&mvm->mutex);
 960                 entry->fn(mvm, &entry->rxb);
 961                 iwl_free_rxb(&entry->rxb);
 962                 list_del(&entry->list);
 963                 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
 964                         mutex_unlock(&mvm->mutex);
 965                 kfree(entry);
 966         }
 967 }
 968
 969 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm,
 970                                             struct iwl_rx_packet *pkt)
 971 {
 972         struct iwl_fw_dbg_trigger_tlv *trig;
 973         struct iwl_fw_dbg_trigger_cmd *cmds_trig;
 974         int i;
 975
 976         trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, NULL,
 977                                      FW_DBG_TRIGGER_FW_NOTIF);
 978         if (!trig)
 979                 return;
 980
 981         cmds_trig = (void *)trig->data;
 982
 983         for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) {
 984                 /* don't collect on CMD 0 */
 985                 if (!cmds_trig->cmds[i].cmd_id)
 986                         break;
 987
 988                 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
 989                     cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
 990                         continue;
 991
 992                 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
 993                                         "CMD 0x%02x.%02x received",
 994                                         pkt->hdr.group_id, pkt->hdr.cmd);
 995                 break;
 996         }
 997 }
 998
 999 static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
1000                               struct iwl_rx_cmd_buffer *rxb,
1001                               struct iwl_rx_packet *pkt)
1002 {
1003         int i;
1004
1005         iwl_mvm_rx_check_trigger(mvm, pkt);
1006
1007         /*
1008          * Do the notification wait before RX handlers so
1009          * even if the RX handler consumes the RXB we have
1010          * access to it in the notification wait entry.
1011          */
1012         iwl_notification_wait_notify(&mvm->notif_wait, pkt);
1013
1014         for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
1015                 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
1016                 struct iwl_async_handler_entry *entry;
1017
1018                 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
1019                         continue;
1020
1021                 if (rx_h->context == RX_HANDLER_SYNC) {
1022                         rx_h->fn(mvm, rxb);
1023                         return;
1024                 }
1025
1026                 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
1027                 /* we can't do much... */
1028                 if (!entry)
1029                         return;
1030
1031                 entry->rxb._page = rxb_steal_page(rxb);
1032                 entry->rxb._offset = rxb->_offset;
1033                 entry->rxb._rx_page_order = rxb->_rx_page_order;
1034                 entry->fn = rx_h->fn;
1035                 entry->context = rx_h->context;
1036                 spin_lock(&mvm->async_handlers_lock);
1037                 list_add_tail(&entry->list, &mvm->async_handlers_list);
1038                 spin_unlock(&mvm->async_handlers_lock);
1039                 schedule_work(&mvm->async_handlers_wk);
1040                 break;
1041         }
1042 }
1043
1044 static void iwl_mvm_rx(struct iwl_op_mode *op_mode,
1045                        struct napi_struct *napi,
1046                        struct iwl_rx_cmd_buffer *rxb)
1047 {
1048         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1049         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1050         u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1051
1052         if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1053                 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
1054         else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD))
1055                 iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
1056         else
1057                 iwl_mvm_rx_common(mvm, rxb, pkt);
1058 }
1059
1060 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode,
1061                           struct napi_struct *napi,
1062                           struct iwl_rx_cmd_buffer *rxb)
1063 {
1064         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1065         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1066         u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1067
1068         if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1069                 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0);
1070         else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1071                                          RX_QUEUES_NOTIFICATION)))
1072                 iwl_mvm_rx_queue_notif(mvm, rxb, 0);
1073         else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))
1074                 iwl_mvm_rx_frame_release(mvm, napi, rxb, 0);
1075         else
1076                 iwl_mvm_rx_common(mvm, rxb, pkt);
1077 }
1078
1079 void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
1080 {
1081         int q;
1082
1083         if (WARN_ON_ONCE(!mq))
1084                 return;
1085
1086         for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
1087                 if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) {
1088                         IWL_DEBUG_TX_QUEUES(mvm,
1089                                             "mac80211 %d already stopped\n", q);
1090                         continue;
1091                 }
1092
1093                 ieee80211_stop_queue(mvm->hw, q);
1094         }
1095 }
1096
1097 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode,
1098                              const struct iwl_device_cmd *cmd)
1099 {
1100         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1101
1102         /*
1103          * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA
1104          * commands that need to block the Tx queues.
1105          */
1106         iwl_trans_block_txq_ptrs(mvm->trans, false);
1107 }
1108
1109 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1110 {
1111         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1112         unsigned long mq = mvm->hw_queue_to_mac80211[hw_queue];
1113
1114         iwl_mvm_stop_mac_queues(mvm, mq);
1115 }
1116
1117 void iwl_mvm_start_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
1118 {
1119         int q;
1120
1121         if (WARN_ON_ONCE(!mq))
1122                 return;
1123
1124         for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
1125                 if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) {
1126                         IWL_DEBUG_TX_QUEUES(mvm,
1127                                             "mac80211 %d still stopped\n", q);
1128                         continue;
1129                 }
1130
1131                 ieee80211_wake_queue(mvm->hw, q);
1132         }
1133 }
1134
1135 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1136 {
1137         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1138         unsigned long mq = mvm->hw_queue_to_mac80211[hw_queue];
1139
1140         iwl_mvm_start_mac_queues(mvm, mq);
1141 }
1142
1143 static void iwl_mvm_set_rfkill_state(struct iwl_mvm *mvm)
1144 {
1145         bool state = iwl_mvm_is_radio_killed(mvm);
1146
1147         if (state)
1148                 wake_up(&mvm->rx_sync_waitq);
1149
1150         wiphy_rfkill_set_hw_state(mvm->hw->wiphy, state);
1151 }
1152
1153 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
1154 {
1155         if (state)
1156                 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1157         else
1158                 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1159
1160         iwl_mvm_set_rfkill_state(mvm);
1161 }
1162
1163 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
1164 {
1165         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1166         bool calibrating = READ_ONCE(mvm->calibrating);
1167
1168         if (state)
1169                 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1170         else
1171                 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1172
1173         iwl_mvm_set_rfkill_state(mvm);
1174
1175         /* iwl_run_init_mvm_ucode is waiting for results, abort it */
1176         if (calibrating)
1177                 iwl_abort_notification_waits(&mvm->notif_wait);
1178
1179         /*
1180          * Stop the device if we run OPERATIONAL firmware or if we are in the
1181          * middle of the calibrations.
1182          */
1183         return state && (mvm->fwrt.cur_fw_img != IWL_UCODE_INIT || calibrating);
1184 }
1185
1186 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
1187 {
1188         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1189         struct ieee80211_tx_info *info;
1190
1191         info = IEEE80211_SKB_CB(skb);
1192         iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
1193         ieee80211_free_txskb(mvm->hw, skb);
1194 }
1195
1196 struct iwl_mvm_reprobe {
1197         struct device *dev;
1198         struct work_struct work;
1199 };
1200
1201 static void iwl_mvm_reprobe_wk(struct work_struct *wk)
1202 {
1203         struct iwl_mvm_reprobe *reprobe;
1204
1205         reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
1206         if (device_reprobe(reprobe->dev))
1207                 dev_err(reprobe->dev, "reprobe failed!\n");
1208         kfree(reprobe);
1209         module_put(THIS_MODULE);
1210 }
1211
1212 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
1213 {
1214         iwl_abort_notification_waits(&mvm->notif_wait);
1215
1216         /*
1217          * This is a bit racy, but worst case we tell mac80211 about
1218          * a stopped/aborted scan when that was already done which
1219          * is not a problem. It is necessary to abort any os scan
1220          * here because mac80211 requires having the scan cleared
1221          * before restarting.
1222          * We'll reset the scan_status to NONE in restart cleanup in
1223          * the next start() call from mac80211. If restart isn't called
1224          * (no fw restart) scan status will stay busy.
1225          */
1226         iwl_mvm_report_scan_aborted(mvm);
1227
1228         /*
1229          * If we're restarting already, don't cycle restarts.
1230          * If INIT fw asserted, it will likely fail again.
1231          * If WoWLAN fw asserted, don't restart either, mac80211
1232          * can't recover this since we're already half suspended.
1233          */
1234         if (!mvm->fw_restart && fw_error) {
1235                 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert,
1236                                         false, 0);
1237         } else if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1238                 struct iwl_mvm_reprobe *reprobe;
1239
1240                 IWL_ERR(mvm,
1241                         "Firmware error during reconfiguration - reprobe!\n");
1242
1243                 /*
1244                  * get a module reference to avoid doing this while unloading
1245                  * anyway and to avoid scheduling a work with code that's
1246                  * being removed.
1247                  */
1248                 if (!try_module_get(THIS_MODULE)) {
1249                         IWL_ERR(mvm, "Module is being unloaded - abort\n");
1250                         return;
1251                 }
1252
1253                 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
1254                 if (!reprobe) {
1255                         module_put(THIS_MODULE);
1256                         return;
1257                 }
1258                 reprobe->dev = mvm->trans->dev;
1259                 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
1260                 schedule_work(&reprobe->work);
1261         } else if (mvm->fwrt.cur_fw_img == IWL_UCODE_REGULAR &&
1262                    mvm->hw_registered &&
1263                    !test_bit(STATUS_TRANS_DEAD, &mvm->trans->status)) {
1264                 /* don't let the transport/FW power down */
1265                 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1266
1267                 if (fw_error && mvm->fw_restart > 0)
1268                         mvm->fw_restart--;
1269                 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
1270                 ieee80211_restart_hw(mvm->hw);
1271         }
1272 }
1273
1274 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
1275 {
1276         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1277
1278         if (!test_bit(STATUS_TRANS_DEAD, &mvm->trans->status))
1279                 iwl_mvm_dump_nic_error_log(mvm);
1280
1281         iwl_mvm_nic_restart(mvm, true);
1282 }
1283
1284 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
1285 {
1286         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1287
1288         WARN_ON(1);
1289         iwl_mvm_nic_restart(mvm, true);
1290 }
1291
1292 #ifdef CONFIG_PM
1293 struct iwl_d0i3_iter_data {
1294         struct iwl_mvm *mvm;
1295         struct ieee80211_vif *connected_vif;
1296         u8 ap_sta_id;
1297         u8 vif_count;
1298         u8 offloading_tid;
1299         bool disable_offloading;
1300 };
1301
1302 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm,
1303                                         struct ieee80211_vif *vif,
1304                                         struct iwl_d0i3_iter_data *iter_data)
1305 {
1306         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1307         struct iwl_mvm_sta *mvmsta;
1308         u32 available_tids = 0;
1309         u8 tid;
1310
1311         if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
1312                     mvmvif->ap_sta_id == IWL_MVM_INVALID_STA))
1313                 return false;
1314
1315         mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
1316         if (!mvmsta)
1317                 return false;
1318
1319         spin_lock_bh(&mvmsta->lock);
1320         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1321                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
1322
1323                 /*
1324                  * in case of pending tx packets, don't use this tid
1325                  * for offloading in order to prevent reuse of the same
1326                  * qos seq counters.
1327                  */
1328                 if (iwl_mvm_tid_queued(mvm, tid_data))
1329                         continue;
1330
1331                 if (tid_data->state != IWL_AGG_OFF)
1332                         continue;
1333
1334                 available_tids |= BIT(tid);
1335         }
1336         spin_unlock_bh(&mvmsta->lock);
1337
1338         /*
1339          * disallow protocol offloading if we have no available tid
1340          * (with no pending frames and no active aggregation,
1341          * as we don't handle "holes" properly - the scheduler needs the
1342          * frame's seq number and TFD index to match)
1343          */
1344         if (!available_tids)
1345                 return true;
1346
1347         /* for simplicity, just use the first available tid */
1348         iter_data->offloading_tid = ffs(available_tids) - 1;
1349         return false;
1350 }
1351
1352 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
1353                                         struct ieee80211_vif *vif)
1354 {
1355         struct iwl_d0i3_iter_data *data = _data;
1356         struct iwl_mvm *mvm = data->mvm;
1357         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1358         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1359
1360         IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr);
1361         if (vif->type != NL80211_IFTYPE_STATION ||
1362             !vif->bss_conf.assoc)
1363                 return;
1364
1365         /*
1366          * in case of pending tx packets or active aggregations,
1367          * avoid offloading features in order to prevent reuse of
1368          * the same qos seq counters.
1369          */
1370         if (iwl_mvm_disallow_offloading(mvm, vif, data))
1371                 data->disable_offloading = true;
1372
1373         iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
1374         iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading,
1375                                    false, flags);
1376
1377         /*
1378          * on init/association, mvm already configures POWER_TABLE_CMD
1379          * and REPLY_MCAST_FILTER_CMD, so currently don't
1380          * reconfigure them (we might want to use different
1381          * params later on, though).
1382          */
1383         data->ap_sta_id = mvmvif->ap_sta_id;
1384         data->vif_count++;
1385
1386         /*
1387          * no new commands can be sent at this stage, so it's safe
1388          * to save the vif pointer during d0i3 entrance.
1389          */
1390         data->connected_vif = vif;
1391 }
1392
1393 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
1394                                     struct iwl_wowlan_config_cmd *cmd,
1395                                     struct iwl_d0i3_iter_data *iter_data)
1396 {
1397         struct ieee80211_sta *ap_sta;
1398         struct iwl_mvm_sta *mvm_ap_sta;
1399
1400         if (iter_data->ap_sta_id == IWL_MVM_INVALID_STA)
1401                 return;
1402
1403         rcu_read_lock();
1404
1405         ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]);
1406         if (IS_ERR_OR_NULL(ap_sta))
1407                 goto out;
1408
1409         mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
1410         cmd->is_11n_connection = ap_sta->ht_cap.ht_supported;
1411         cmd->offloading_tid = iter_data->offloading_tid;
1412         cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING |
1413                 ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON;
1414         /*
1415          * The d0i3 uCode takes care of the nonqos counters,
1416          * so configure only the qos seq ones.
1417          */
1418         iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd);
1419 out:
1420         rcu_read_unlock();
1421 }
1422
1423 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
1424 {
1425         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1426         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1427         int ret;
1428         struct iwl_d0i3_iter_data d0i3_iter_data = {
1429                 .mvm = mvm,
1430         };
1431         struct iwl_wowlan_config_cmd wowlan_config_cmd = {
1432                 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
1433                                              IWL_WOWLAN_WAKEUP_BEACON_MISS |
1434                                              IWL_WOWLAN_WAKEUP_LINK_CHANGE),
1435         };
1436         struct iwl_d3_manager_config d3_cfg_cmd = {
1437                 .min_sleep_time = cpu_to_le32(1000),
1438                 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR),
1439         };
1440
1441         IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
1442
1443         if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR))
1444                 return -EINVAL;
1445
1446         set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1447
1448         /*
1449          * iwl_mvm_ref_sync takes a reference before checking the flag.
1450          * so by checking there is no held reference we prevent a state
1451          * in which iwl_mvm_ref_sync continues successfully while we
1452          * configure the firmware to enter d0i3
1453          */
1454         if (iwl_mvm_ref_taken(mvm)) {
1455                 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n");
1456                 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1457                 wake_up(&mvm->d0i3_exit_waitq);
1458                 return 1;
1459         }
1460
1461         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1462                                                    IEEE80211_IFACE_ITER_NORMAL,
1463                                                    iwl_mvm_enter_d0i3_iterator,
1464                                                    &d0i3_iter_data);
1465         if (d0i3_iter_data.vif_count == 1) {
1466                 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
1467                 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
1468         } else {
1469                 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
1470                 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1471                 mvm->d0i3_offloading = false;
1472         }
1473
1474         iwl_mvm_pause_tcm(mvm, true);
1475         /* make sure we have no running tx while configuring the seqno */
1476         synchronize_net();
1477
1478         /* Flush the hw queues, in case something got queued during entry */
1479         /* TODO new tx api */
1480         if (iwl_mvm_has_new_tx_api(mvm)) {
1481                 WARN_ONCE(1, "d0i3: Need to implement flush TX queue\n");
1482         } else {
1483                 ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm),
1484                                             flags);
1485                 if (ret)
1486                         return ret;
1487         }
1488
1489         /* configure wowlan configuration only if needed */
1490         if (mvm->d0i3_ap_sta_id != IWL_MVM_INVALID_STA) {
1491                 /* wake on beacons only if beacon storing isn't supported */
1492                 if (!fw_has_capa(&mvm->fw->ucode_capa,
1493                                  IWL_UCODE_TLV_CAPA_BEACON_STORING))
1494                         wowlan_config_cmd.wakeup_filter |=
1495                                 cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING);
1496
1497                 iwl_mvm_wowlan_config_key_params(mvm,
1498                                                  d0i3_iter_data.connected_vif,
1499                                                  true, flags);
1500
1501                 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd,
1502                                         &d0i3_iter_data);
1503
1504                 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags,
1505                                            sizeof(wowlan_config_cmd),
1506                                            &wowlan_config_cmd);
1507                 if (ret)
1508                         return ret;
1509         }
1510
1511         return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
1512                                     flags | CMD_MAKE_TRANS_IDLE,
1513                                     sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1514 }
1515
1516 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac,
1517                                        struct ieee80211_vif *vif)
1518 {
1519         struct iwl_mvm *mvm = _data;
1520         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO;
1521
1522         IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr);
1523         if (vif->type != NL80211_IFTYPE_STATION ||
1524             !vif->bss_conf.assoc)
1525                 return;
1526
1527         iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags);
1528 }
1529
1530 struct iwl_mvm_d0i3_exit_work_iter_data {
1531         struct iwl_mvm *mvm;
1532         struct iwl_wowlan_status *status;
1533         u32 wakeup_reasons;
1534 };
1535
1536 static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac,
1537                                         struct ieee80211_vif *vif)
1538 {
1539         struct iwl_mvm_d0i3_exit_work_iter_data *data = _data;
1540         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1541         u32 reasons = data->wakeup_reasons;
1542
1543         /* consider only the relevant station interface */
1544         if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1545             data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id)
1546                 return;
1547
1548         if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)
1549                 iwl_mvm_connection_loss(data->mvm, vif, "D0i3");
1550         else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON)
1551                 ieee80211_beacon_loss(vif);
1552         else
1553                 iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status);
1554 }
1555
1556 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq)
1557 {
1558         struct ieee80211_sta *sta = NULL;
1559         struct iwl_mvm_sta *mvm_ap_sta;
1560         int i;
1561         bool wake_queues = false;
1562
1563         lockdep_assert_held(&mvm->mutex);
1564
1565         spin_lock_bh(&mvm->d0i3_tx_lock);
1566
1567         if (mvm->d0i3_ap_sta_id == IWL_MVM_INVALID_STA)
1568                 goto out;
1569
1570         IWL_DEBUG_RPM(mvm, "re-enqueue packets\n");
1571
1572         /* get the sta in order to update seq numbers and re-enqueue skbs */
1573         sta = rcu_dereference_protected(
1574                         mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id],
1575                         lockdep_is_held(&mvm->mutex));
1576
1577         if (IS_ERR_OR_NULL(sta)) {
1578                 sta = NULL;
1579                 goto out;
1580         }
1581
1582         if (mvm->d0i3_offloading && qos_seq) {
1583                 /* update qos seq numbers if offloading was enabled */
1584                 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta);
1585                 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1586                         u16 seq = le16_to_cpu(qos_seq[i]);
1587                         /* firmware stores last-used one, we store next one */
1588                         seq += 0x10;
1589                         mvm_ap_sta->tid_data[i].seq_number = seq;
1590                 }
1591         }
1592 out:
1593         /* re-enqueue (or drop) all packets */
1594         while (!skb_queue_empty(&mvm->d0i3_tx)) {
1595                 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx);
1596
1597                 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta))
1598                         ieee80211_free_txskb(mvm->hw, skb);
1599
1600                 /* if the skb_queue is not empty, we need to wake queues */
1601                 wake_queues = true;
1602         }
1603         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1604         wake_up(&mvm->d0i3_exit_waitq);
1605         mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1606         if (wake_queues)
1607                 ieee80211_wake_queues(mvm->hw);
1608
1609         spin_unlock_bh(&mvm->d0i3_tx_lock);
1610 }
1611
1612 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk)
1613 {
1614         struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work);
1615         struct iwl_mvm_d0i3_exit_work_iter_data iter_data = {
1616                 .mvm = mvm,
1617         };
1618
1619         struct iwl_wowlan_status *status;
1620         u32 wakeup_reasons = 0;
1621         __le16 *qos_seq = NULL;
1622
1623         mutex_lock(&mvm->mutex);
1624
1625         status = iwl_mvm_send_wowlan_get_status(mvm);
1626         if (IS_ERR_OR_NULL(status)) {
1627                 /* set to NULL so we don't need to check before kfree'ing */
1628                 status = NULL;
1629                 goto out;
1630         }
1631
1632         wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
1633         qos_seq = status->qos_seq_ctr;
1634
1635         IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);
1636
1637         iter_data.wakeup_reasons = wakeup_reasons;
1638         iter_data.status = status;
1639         ieee80211_iterate_active_interfaces(mvm->hw,
1640                                             IEEE80211_IFACE_ITER_NORMAL,
1641                                             iwl_mvm_d0i3_exit_work_iter,
1642                                             &iter_data);
1643 out:
1644         iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
1645
1646         IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n",
1647                        wakeup_reasons);
1648
1649         /* qos_seq might point inside resp_pkt, so free it only now */
1650         kfree(status);
1651
1652         /* the FW might have updated the regdomain */
1653         iwl_mvm_update_changed_regdom(mvm);
1654
1655         iwl_mvm_resume_tcm(mvm);
1656         iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
1657         mutex_unlock(&mvm->mutex);
1658 }
1659
1660 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
1661 {
1662         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
1663                     CMD_WAKE_UP_TRANS;
1664         int ret;
1665
1666         IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
1667
1668         if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR))
1669                 return -EINVAL;
1670
1671         mutex_lock(&mvm->d0i3_suspend_mutex);
1672         if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) {
1673                 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n");
1674                 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags);
1675                 mutex_unlock(&mvm->d0i3_suspend_mutex);
1676                 return 0;
1677         }
1678         mutex_unlock(&mvm->d0i3_suspend_mutex);
1679
1680         ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
1681         if (ret)
1682                 goto out;
1683
1684         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1685                                                    IEEE80211_IFACE_ITER_NORMAL,
1686                                                    iwl_mvm_exit_d0i3_iterator,
1687                                                    mvm);
1688 out:
1689         schedule_work(&mvm->d0i3_exit_work);
1690         return ret;
1691 }
1692
1693 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
1694 {
1695         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1696
1697         iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK);
1698         return _iwl_mvm_exit_d0i3(mvm);
1699 }
1700
1701 #define IWL_MVM_D0I3_OPS                                        \
1702         .enter_d0i3 = iwl_mvm_enter_d0i3,                       \
1703         .exit_d0i3 = iwl_mvm_exit_d0i3,
1704 #else /* CONFIG_PM */
1705 #define IWL_MVM_D0I3_OPS
1706 #endif /* CONFIG_PM */
1707
1708 #define IWL_MVM_COMMON_OPS                                      \
1709         /* these could be differentiated */                     \
1710         .async_cb = iwl_mvm_async_cb,                           \
1711         .queue_full = iwl_mvm_stop_sw_queue,                    \
1712         .queue_not_full = iwl_mvm_wake_sw_queue,                \
1713         .hw_rf_kill = iwl_mvm_set_hw_rfkill_state,              \
1714         .free_skb = iwl_mvm_free_skb,                           \
1715         .nic_error = iwl_mvm_nic_error,                         \
1716         .cmd_queue_full = iwl_mvm_cmd_queue_full,               \
1717         .nic_config = iwl_mvm_nic_config,                       \
1718         IWL_MVM_D0I3_OPS                                        \
1719         /* as we only register one, these MUST be common! */    \
1720         .start = iwl_op_mode_mvm_start,                         \
1721         .stop = iwl_op_mode_mvm_stop
1722
1723 static const struct iwl_op_mode_ops iwl_mvm_ops = {
1724         IWL_MVM_COMMON_OPS,
1725         .rx = iwl_mvm_rx,
1726 };
1727
1728 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode,
1729                               struct napi_struct *napi,
1730                               struct iwl_rx_cmd_buffer *rxb,
1731                               unsigned int queue)
1732 {
1733         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1734         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1735         u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1736
1737         if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)))
1738                 iwl_mvm_rx_frame_release(mvm, napi, rxb, queue);
1739         else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1740                                          RX_QUEUES_NOTIFICATION)))
1741                 iwl_mvm_rx_queue_notif(mvm, rxb, queue);
1742         else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1743                 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue);
1744 }
1745
1746 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = {
1747         IWL_MVM_COMMON_OPS,
1748         .rx = iwl_mvm_rx_mq,
1749         .rx_rss = iwl_mvm_rx_mq_rss,
1750 };