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/acpi.h"
  86
  87 #define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux"
  88 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  89 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  90 MODULE_LICENSE("GPL");
  91
  92 static const struct iwl_op_mode_ops iwl_mvm_ops;
  93 static const struct iwl_op_mode_ops iwl_mvm_ops_mq;
  94
  95 struct iwl_mvm_mod_params iwlmvm_mod_params = {
  96         .power_scheme = IWL_POWER_SCHEME_BPS,
  97         .tfd_q_hang_detect = true
  98         /* rest of fields are 0 by default */
  99 };
 100
 101 module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, 0444);
 102 MODULE_PARM_DESC(init_dbg,
 103                  "set to true to debug an ASSERT in INIT fw (default: false");
 104 module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, 0444);
 105 MODULE_PARM_DESC(power_scheme,
 106                  "power management scheme: 1-active, 2-balanced, 3-low power, default: 2");
 107 module_param_named(tfd_q_hang_detect, iwlmvm_mod_params.tfd_q_hang_detect,
 108                    bool, 0444);
 109 MODULE_PARM_DESC(tfd_q_hang_detect,
 110                  "TFD queues hang detection (default: true");
 111
 112 /*
 113  * module init and exit functions
 114  */
 115 static int __init iwl_mvm_init(void)
 116 {
 117         int ret;
 118
 119         ret = iwl_mvm_rate_control_register();
 120         if (ret) {
 121                 pr_err("Unable to register rate control algorithm: %d\n", ret);
 122                 return ret;
 123         }
 124
 125         ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops);
 126         if (ret)
 127                 pr_err("Unable to register MVM op_mode: %d\n", ret);
 128
 129         return ret;
 130 }
 131 module_init(iwl_mvm_init);
 132
 133 static void __exit iwl_mvm_exit(void)
 134 {
 135         iwl_opmode_deregister("iwlmvm");
 136         iwl_mvm_rate_control_unregister();
 137 }
 138 module_exit(iwl_mvm_exit);
 139
 140 static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode)
 141 {
 142         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 143         u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash;
 144         u32 reg_val = 0;
 145         u32 phy_config = iwl_mvm_get_phy_config(mvm);
 146
 147         radio_cfg_type = (phy_config & FW_PHY_CFG_RADIO_TYPE) >>
 148                          FW_PHY_CFG_RADIO_TYPE_POS;
 149         radio_cfg_step = (phy_config & FW_PHY_CFG_RADIO_STEP) >>
 150                          FW_PHY_CFG_RADIO_STEP_POS;
 151         radio_cfg_dash = (phy_config & FW_PHY_CFG_RADIO_DASH) >>
 152                          FW_PHY_CFG_RADIO_DASH_POS;
 153
 154         /* SKU control */
 155         reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) <<
 156                                 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP;
 157         reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) <<
 158                                 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH;
 159
 160         /* radio configuration */
 161         reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE;
 162         reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP;
 163         reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
 164
 165         WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) &
 166                  ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE);
 167
 168         /*
 169          * TODO: Bits 7-8 of CSR in 8000 HW family and higher set the ADC
 170          * sampling, and shouldn't be set to any non-zero value.
 171          * The same is supposed to be true of the other HW, but unsetting
 172          * them (such as the 7260) causes automatic tests to fail on seemingly
 173          * unrelated errors. Need to further investigate this, but for now
 174          * we'll separate cases.
 175          */
 176         if (mvm->trans->cfg->device_family < IWL_DEVICE_FAMILY_8000)
 177                 reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI;
 178
 179         if (iwl_fw_dbg_is_d3_debug_enabled(&mvm->fwrt))
 180                 reg_val |= CSR_HW_IF_CONFIG_REG_D3_DEBUG;
 181
 182         iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG,
 183                                 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
 184                                 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP |
 185                                 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
 186                                 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
 187                                 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH |
 188                                 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
 189                                 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI   |
 190                                 CSR_HW_IF_CONFIG_REG_D3_DEBUG,
 191                                 reg_val);
 192
 193         IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type,
 194                        radio_cfg_step, radio_cfg_dash);
 195
 196         /*
 197          * W/A : NIC is stuck in a reset state after Early PCIe power off
 198          * (PCIe power is lost before PERST# is asserted), causing ME FW
 199          * to lose ownership and not being able to obtain it back.
 200          */
 201         if (!mvm->trans->cfg->apmg_not_supported)
 202                 iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG,
 203                                        APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
 204                                        ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
 205 }
 206
 207 /**
 208  * enum iwl_rx_handler_context context for Rx handler
 209  * @RX_HANDLER_SYNC : this means that it will be called in the Rx path
 210  *      which can't acquire mvm->mutex.
 211  * @RX_HANDLER_ASYNC_LOCKED : If the handler needs to hold mvm->mutex
 212  *      (and only in this case!), it should be set as ASYNC. In that case,
 213  *      it will be called from a worker with mvm->mutex held.
 214  * @RX_HANDLER_ASYNC_UNLOCKED : in case the handler needs to lock the
 215  *      mutex itself, it will be called from a worker without mvm->mutex held.
 216  */
 217 enum iwl_rx_handler_context {
 218         RX_HANDLER_SYNC,
 219         RX_HANDLER_ASYNC_LOCKED,
 220         RX_HANDLER_ASYNC_UNLOCKED,
 221 };
 222
 223 /**
 224  * struct iwl_rx_handlers handler for FW notification
 225  * @cmd_id: command id
 226  * @context: see &iwl_rx_handler_context
 227  * @fn: the function is called when notification is received
 228  */
 229 struct iwl_rx_handlers {
 230         u16 cmd_id;
 231         enum iwl_rx_handler_context context;
 232         void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
 233 };
 234
 235 #define RX_HANDLER(_cmd_id, _fn, _context)      \
 236         { .cmd_id = _cmd_id, .fn = _fn, .context = _context }
 237 #define RX_HANDLER_GRP(_grp, _cmd, _fn, _context)       \
 238         { .cmd_id = WIDE_ID(_grp, _cmd), .fn = _fn, .context = _context }
 239
 240 /*
 241  * Handlers for fw notifications
 242  * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME
 243  * This list should be in order of frequency for performance purposes.
 244  *
 245  * The handler can be one from three contexts, see &iwl_rx_handler_context
 246  */
 247 static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
 248         RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, RX_HANDLER_SYNC),
 249         RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, RX_HANDLER_SYNC),
 250
 251         RX_HANDLER_GRP(DATA_PATH_GROUP, TLC_MNG_UPDATE_NOTIF,
 252                        iwl_mvm_tlc_update_notif, RX_HANDLER_SYNC),
 253
 254         RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif,
 255                    RX_HANDLER_ASYNC_LOCKED),
 256         RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif,
 257                    RX_HANDLER_ASYNC_LOCKED),
 258         RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics,
 259                    RX_HANDLER_ASYNC_LOCKED),
 260
 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_GRP(LOCATION_GROUP, TOF_RESPONDER_STATS,
 304                        iwl_mvm_ftm_responder_stats, RX_HANDLER_ASYNC_LOCKED),
 305
 306         RX_HANDLER_GRP(LOCATION_GROUP, TOF_RANGE_RESPONSE_NOTIF,
 307                        iwl_mvm_ftm_range_resp, RX_HANDLER_ASYNC_LOCKED),
 308         RX_HANDLER_GRP(LOCATION_GROUP, TOF_LC_NOTIF,
 309                        iwl_mvm_ftm_lc_notif, RX_HANDLER_ASYNC_LOCKED),
 310
 311         RX_HANDLER_GRP(DEBUG_GROUP, MFU_ASSERT_DUMP_NTF,
 312                        iwl_mvm_mfu_assert_dump_notif, RX_HANDLER_SYNC),
 313         RX_HANDLER_GRP(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF,
 314                        iwl_mvm_rx_stored_beacon_notif, RX_HANDLER_SYNC),
 315         RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF,
 316                        iwl_mvm_mu_mimo_grp_notif, RX_HANDLER_SYNC),
 317         RX_HANDLER_GRP(DATA_PATH_GROUP, STA_PM_NOTIF,
 318                        iwl_mvm_sta_pm_notif, RX_HANDLER_SYNC),
 319 };
 320 #undef RX_HANDLER
 321 #undef RX_HANDLER_GRP
 322
 323 /* Please keep this array *SORTED* by hex value.
 324  * Access is done through binary search
 325  */
 326 static const struct iwl_hcmd_names iwl_mvm_legacy_names[] = {
 327         HCMD_NAME(MVM_ALIVE),
 328         HCMD_NAME(REPLY_ERROR),
 329         HCMD_NAME(ECHO_CMD),
 330         HCMD_NAME(INIT_COMPLETE_NOTIF),
 331         HCMD_NAME(PHY_CONTEXT_CMD),
 332         HCMD_NAME(DBG_CFG),
 333         HCMD_NAME(SCAN_CFG_CMD),
 334         HCMD_NAME(SCAN_REQ_UMAC),
 335         HCMD_NAME(SCAN_ABORT_UMAC),
 336         HCMD_NAME(SCAN_COMPLETE_UMAC),
 337         HCMD_NAME(BA_WINDOW_STATUS_NOTIFICATION_ID),
 338         HCMD_NAME(ADD_STA_KEY),
 339         HCMD_NAME(ADD_STA),
 340         HCMD_NAME(REMOVE_STA),
 341         HCMD_NAME(FW_GET_ITEM_CMD),
 342         HCMD_NAME(TX_CMD),
 343         HCMD_NAME(SCD_QUEUE_CFG),
 344         HCMD_NAME(TXPATH_FLUSH),
 345         HCMD_NAME(MGMT_MCAST_KEY),
 346         HCMD_NAME(WEP_KEY),
 347         HCMD_NAME(SHARED_MEM_CFG),
 348         HCMD_NAME(TDLS_CHANNEL_SWITCH_CMD),
 349         HCMD_NAME(MAC_CONTEXT_CMD),
 350         HCMD_NAME(TIME_EVENT_CMD),
 351         HCMD_NAME(TIME_EVENT_NOTIFICATION),
 352         HCMD_NAME(BINDING_CONTEXT_CMD),
 353         HCMD_NAME(TIME_QUOTA_CMD),
 354         HCMD_NAME(NON_QOS_TX_COUNTER_CMD),
 355         HCMD_NAME(LEDS_CMD),
 356         HCMD_NAME(LQ_CMD),
 357         HCMD_NAME(FW_PAGING_BLOCK_CMD),
 358         HCMD_NAME(SCAN_OFFLOAD_REQUEST_CMD),
 359         HCMD_NAME(SCAN_OFFLOAD_ABORT_CMD),
 360         HCMD_NAME(HOT_SPOT_CMD),
 361         HCMD_NAME(SCAN_OFFLOAD_PROFILES_QUERY_CMD),
 362         HCMD_NAME(BT_COEX_UPDATE_REDUCED_TXP),
 363         HCMD_NAME(BT_COEX_CI),
 364         HCMD_NAME(PHY_CONFIGURATION_CMD),
 365         HCMD_NAME(CALIB_RES_NOTIF_PHY_DB),
 366         HCMD_NAME(PHY_DB_CMD),
 367         HCMD_NAME(SCAN_OFFLOAD_COMPLETE),
 368         HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
 369         HCMD_NAME(POWER_TABLE_CMD),
 370         HCMD_NAME(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION),
 371         HCMD_NAME(REPLY_THERMAL_MNG_BACKOFF),
 372         HCMD_NAME(DC2DC_CONFIG_CMD),
 373         HCMD_NAME(NVM_ACCESS_CMD),
 374         HCMD_NAME(BEACON_NOTIFICATION),
 375         HCMD_NAME(BEACON_TEMPLATE_CMD),
 376         HCMD_NAME(TX_ANT_CONFIGURATION_CMD),
 377         HCMD_NAME(BT_CONFIG),
 378         HCMD_NAME(STATISTICS_CMD),
 379         HCMD_NAME(STATISTICS_NOTIFICATION),
 380         HCMD_NAME(EOSP_NOTIFICATION),
 381         HCMD_NAME(REDUCE_TX_POWER_CMD),
 382         HCMD_NAME(CARD_STATE_NOTIFICATION),
 383         HCMD_NAME(MISSED_BEACONS_NOTIFICATION),
 384         HCMD_NAME(TDLS_CONFIG_CMD),
 385         HCMD_NAME(MAC_PM_POWER_TABLE),
 386         HCMD_NAME(TDLS_CHANNEL_SWITCH_NOTIFICATION),
 387         HCMD_NAME(MFUART_LOAD_NOTIFICATION),
 388         HCMD_NAME(RSS_CONFIG_CMD),
 389         HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC),
 390         HCMD_NAME(REPLY_RX_PHY_CMD),
 391         HCMD_NAME(REPLY_RX_MPDU_CMD),
 392         HCMD_NAME(FRAME_RELEASE),
 393         HCMD_NAME(BA_NOTIF),
 394         HCMD_NAME(MCC_UPDATE_CMD),
 395         HCMD_NAME(MCC_CHUB_UPDATE_CMD),
 396         HCMD_NAME(MARKER_CMD),
 397         HCMD_NAME(BT_PROFILE_NOTIFICATION),
 398         HCMD_NAME(BCAST_FILTER_CMD),
 399         HCMD_NAME(MCAST_FILTER_CMD),
 400         HCMD_NAME(REPLY_SF_CFG_CMD),
 401         HCMD_NAME(REPLY_BEACON_FILTERING_CMD),
 402         HCMD_NAME(D3_CONFIG_CMD),
 403         HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD),
 404         HCMD_NAME(OFFLOADS_QUERY_CMD),
 405         HCMD_NAME(REMOTE_WAKE_CONFIG_CMD),
 406         HCMD_NAME(MATCH_FOUND_NOTIFICATION),
 407         HCMD_NAME(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(SCAN_ITERATION_COMPLETE),
 415         HCMD_NAME(D0I3_END_CMD),
 416         HCMD_NAME(LTR_CONFIG),
 417 };
 418
 419 /* Please keep this array *SORTED* by hex value.
 420  * Access is done through binary search
 421  */
 422 static const struct iwl_hcmd_names iwl_mvm_system_names[] = {
 423         HCMD_NAME(SHARED_MEM_CFG_CMD),
 424         HCMD_NAME(INIT_EXTENDED_CFG_CMD),
 425         HCMD_NAME(FW_ERROR_RECOVERY_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(CHANNEL_SWITCH_TIME_EVENT_CMD),
 433         HCMD_NAME(CHANNEL_SWITCH_NOA_NOTIF),
 434 };
 435
 436 /* Please keep this array *SORTED* by hex value.
 437  * Access is done through binary search
 438  */
 439 static const struct iwl_hcmd_names iwl_mvm_phy_names[] = {
 440         HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE),
 441         HCMD_NAME(CTDP_CONFIG_CMD),
 442         HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD),
 443         HCMD_NAME(GEO_TX_POWER_LIMIT),
 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(DQA_ENABLE_CMD),
 453         HCMD_NAME(UPDATE_MU_GROUPS_CMD),
 454         HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD),
 455         HCMD_NAME(STA_HE_CTXT_CMD),
 456         HCMD_NAME(RFH_QUEUE_CONFIG_CMD),
 457         HCMD_NAME(TLC_MNG_CONFIG_CMD),
 458         HCMD_NAME(CHEST_COLLECTOR_FILTER_CONFIG_CMD),
 459         HCMD_NAME(STA_PM_NOTIF),
 460         HCMD_NAME(MU_GROUP_MGMT_NOTIF),
 461         HCMD_NAME(RX_QUEUES_NOTIFICATION),
 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_debug_names[] = {
 468         HCMD_NAME(MFU_ASSERT_DUMP_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_location_names[] = {
 475         HCMD_NAME(TOF_RANGE_REQ_CMD),
 476         HCMD_NAME(TOF_CONFIG_CMD),
 477         HCMD_NAME(TOF_RANGE_ABORT_CMD),
 478         HCMD_NAME(TOF_RANGE_REQ_EXT_CMD),
 479         HCMD_NAME(TOF_RESPONDER_CONFIG_CMD),
 480         HCMD_NAME(TOF_RESPONDER_DYN_CONFIG_CMD),
 481         HCMD_NAME(TOF_LC_NOTIF),
 482         HCMD_NAME(TOF_RESPONDER_STATS),
 483         HCMD_NAME(TOF_MCSI_DEBUG_NOTIF),
 484         HCMD_NAME(TOF_RANGE_RESPONSE_NOTIF),
 485 };
 486
 487 /* Please keep this array *SORTED* by hex value.
 488  * Access is done through binary search
 489  */
 490 static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = {
 491         HCMD_NAME(STORED_BEACON_NTF),
 492 };
 493
 494 /* Please keep this array *SORTED* by hex value.
 495  * Access is done through binary search
 496  */
 497 static const struct iwl_hcmd_names iwl_mvm_regulatory_and_nvm_names[] = {
 498         HCMD_NAME(NVM_ACCESS_COMPLETE),
 499         HCMD_NAME(NVM_GET_INFO),
 500 };
 501
 502 static const struct iwl_hcmd_arr iwl_mvm_groups[] = {
 503         [LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
 504         [LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
 505         [SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names),
 506         [MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names),
 507         [PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names),
 508         [DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names),
 509         [LOCATION_GROUP] = HCMD_ARR(iwl_mvm_location_names),
 510         [PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names),
 511         [REGULATORY_AND_NVM_GROUP] =
 512                 HCMD_ARR(iwl_mvm_regulatory_and_nvm_names),
 513 };
 514
 515 /* this forward declaration can avoid to export the function */
 516 static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
 517 #ifdef CONFIG_PM
 518 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk);
 519 #endif
 520
 521 static u32 iwl_mvm_min_backoff(struct iwl_mvm *mvm)
 522 {
 523         const struct iwl_pwr_tx_backoff *backoff = mvm->cfg->pwr_tx_backoffs;
 524         u64 dflt_pwr_limit;
 525
 526         if (!backoff)
 527                 return 0;
 528
 529         dflt_pwr_limit = iwl_acpi_get_pwr_limit(mvm->dev);
 530
 531         while (backoff->pwr) {
 532                 if (dflt_pwr_limit >= backoff->pwr)
 533                         return backoff->backoff;
 534
 535                 backoff++;
 536         }
 537
 538         return 0;
 539 }
 540
 541 static void iwl_mvm_tx_unblock_dwork(struct work_struct *work)
 542 {
 543         struct iwl_mvm *mvm =
 544                 container_of(work, struct iwl_mvm, cs_tx_unblock_dwork.work);
 545         struct ieee80211_vif *tx_blocked_vif;
 546         struct iwl_mvm_vif *mvmvif;
 547
 548         mutex_lock(&mvm->mutex);
 549
 550         tx_blocked_vif =
 551                 rcu_dereference_protected(mvm->csa_tx_blocked_vif,
 552                                           lockdep_is_held(&mvm->mutex));
 553
 554         if (!tx_blocked_vif)
 555                 goto unlock;
 556
 557         mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif);
 558         iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
 559         RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
 560 unlock:
 561         mutex_unlock(&mvm->mutex);
 562 }
 563
 564 static int iwl_mvm_fwrt_dump_start(void *ctx)
 565 {
 566         struct iwl_mvm *mvm = ctx;
 567         int ret;
 568
 569         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
 570         if (ret)
 571                 return ret;
 572
 573         mutex_lock(&mvm->mutex);
 574
 575         return 0;
 576 }
 577
 578 static void iwl_mvm_fwrt_dump_end(void *ctx)
 579 {
 580         struct iwl_mvm *mvm = ctx;
 581
 582         mutex_unlock(&mvm->mutex);
 583
 584         iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
 585 }
 586
 587 static bool iwl_mvm_fwrt_fw_running(void *ctx)
 588 {
 589         return iwl_mvm_firmware_running(ctx);
 590 }
 591
 592 static int iwl_mvm_fwrt_send_hcmd(void *ctx, struct iwl_host_cmd *host_cmd)
 593 {
 594         struct iwl_mvm *mvm = (struct iwl_mvm *)ctx;
 595         int ret;
 596
 597         mutex_lock(&mvm->mutex);
 598         ret = iwl_mvm_send_cmd(mvm, host_cmd);
 599         mutex_unlock(&mvm->mutex);
 600
 601         return ret;
 602 }
 603
 604 static bool iwl_mvm_d3_debug_enable(void *ctx)
 605 {
 606         return IWL_MVM_D3_DEBUG;
 607 }
 608
 609 static const struct iwl_fw_runtime_ops iwl_mvm_fwrt_ops = {
 610         .dump_start = iwl_mvm_fwrt_dump_start,
 611         .dump_end = iwl_mvm_fwrt_dump_end,
 612         .fw_running = iwl_mvm_fwrt_fw_running,
 613         .send_hcmd = iwl_mvm_fwrt_send_hcmd,
 614         .d3_debug_enable = iwl_mvm_d3_debug_enable,
 615 };
 616
 617 static struct iwl_op_mode *
 618 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
 619                       const struct iwl_fw *fw, struct dentry *dbgfs_dir)
 620 {
 621         struct ieee80211_hw *hw;
 622         struct iwl_op_mode *op_mode;
 623         struct iwl_mvm *mvm;
 624         struct iwl_trans_config trans_cfg = {};
 625         static const u8 no_reclaim_cmds[] = {
 626                 TX_CMD,
 627         };
 628         int err, scan_size;
 629         u32 min_backoff;
 630         enum iwl_amsdu_size rb_size_default;
 631
 632         /*
 633          * We use IWL_MVM_STATION_COUNT to check the validity of the station
 634          * index all over the driver - check that its value corresponds to the
 635          * array size.
 636          */
 637         BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT);
 638
 639         /********************************
 640          * 1. Allocating and configuring HW data
 641          ********************************/
 642         hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
 643                                 sizeof(struct iwl_mvm),
 644                                 &iwl_mvm_hw_ops);
 645         if (!hw)
 646                 return NULL;
 647
 648         if (cfg->max_rx_agg_size)
 649                 hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size;
 650         else
 651                 hw->max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
 652
 653         if (cfg->max_tx_agg_size)
 654                 hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size;
 655         else
 656                 hw->max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
 657
 658         op_mode = hw->priv;
 659
 660         mvm = IWL_OP_MODE_GET_MVM(op_mode);
 661         mvm->dev = trans->dev;
 662         mvm->trans = trans;
 663         mvm->cfg = cfg;
 664         mvm->fw = fw;
 665         mvm->hw = hw;
 666
 667         iwl_fw_runtime_init(&mvm->fwrt, trans, fw, &iwl_mvm_fwrt_ops, mvm,
 668                             dbgfs_dir);
 669
 670         mvm->init_status = 0;
 671
 672         if (iwl_mvm_has_new_rx_api(mvm)) {
 673                 op_mode->ops = &iwl_mvm_ops_mq;
 674                 trans->rx_mpdu_cmd_hdr_size =
 675                         (trans->cfg->device_family >=
 676                          IWL_DEVICE_FAMILY_22560) ?
 677                         sizeof(struct iwl_rx_mpdu_desc) :
 678                         IWL_RX_DESC_SIZE_V1;
 679         } else {
 680                 op_mode->ops = &iwl_mvm_ops;
 681                 trans->rx_mpdu_cmd_hdr_size =
 682                         sizeof(struct iwl_rx_mpdu_res_start);
 683
 684                 if (WARN_ON(trans->num_rx_queues > 1))
 685                         goto out_free;
 686         }
 687
 688         mvm->fw_restart = iwlwifi_mod_params.fw_restart ? -1 : 0;
 689
 690         mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE;
 691         mvm->snif_queue = IWL_MVM_DQA_INJECT_MONITOR_QUEUE;
 692         mvm->probe_queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE;
 693         mvm->p2p_dev_queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE;
 694
 695         mvm->sf_state = SF_UNINIT;
 696         if (iwl_mvm_has_unified_ucode(mvm))
 697                 iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_REGULAR);
 698         else
 699                 iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_INIT);
 700         mvm->drop_bcn_ap_mode = true;
 701
 702         mutex_init(&mvm->mutex);
 703         mutex_init(&mvm->d0i3_suspend_mutex);
 704         spin_lock_init(&mvm->async_handlers_lock);
 705         INIT_LIST_HEAD(&mvm->time_event_list);
 706         INIT_LIST_HEAD(&mvm->aux_roc_te_list);
 707         INIT_LIST_HEAD(&mvm->async_handlers_list);
 708         spin_lock_init(&mvm->time_event_lock);
 709         INIT_LIST_HEAD(&mvm->ftm_initiator.loc_list);
 710
 711         INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
 712         INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
 713 #ifdef CONFIG_PM
 714         INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
 715 #endif
 716         INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
 717         INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk);
 718         INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk);
 719         INIT_LIST_HEAD(&mvm->add_stream_txqs);
 720
 721         spin_lock_init(&mvm->d0i3_tx_lock);
 722         spin_lock_init(&mvm->refs_lock);
 723         skb_queue_head_init(&mvm->d0i3_tx);
 724         init_waitqueue_head(&mvm->d0i3_exit_waitq);
 725         init_waitqueue_head(&mvm->rx_sync_waitq);
 726
 727         atomic_set(&mvm->queue_sync_counter, 0);
 728
 729         SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
 730
 731         spin_lock_init(&mvm->tcm.lock);
 732         INIT_DELAYED_WORK(&mvm->tcm.work, iwl_mvm_tcm_work);
 733         mvm->tcm.ts = jiffies;
 734         mvm->tcm.ll_ts = jiffies;
 735         mvm->tcm.uapsd_nonagg_ts = jiffies;
 736
 737         INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork);
 738
 739         /*
 740          * Populate the state variables that the transport layer needs
 741          * to know about.
 742          */
 743         trans_cfg.op_mode = op_mode;
 744         trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
 745         trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
 746
 747         if (mvm->trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560)
 748                 rb_size_default = IWL_AMSDU_2K;
 749         else
 750                 rb_size_default = IWL_AMSDU_4K;
 751
 752         switch (iwlwifi_mod_params.amsdu_size) {
 753         case IWL_AMSDU_DEF:
 754                 trans_cfg.rx_buf_size = rb_size_default;
 755                 break;
 756         case IWL_AMSDU_4K:
 757                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 758                 break;
 759         case IWL_AMSDU_8K:
 760                 trans_cfg.rx_buf_size = IWL_AMSDU_8K;
 761                 break;
 762         case IWL_AMSDU_12K:
 763                 trans_cfg.rx_buf_size = IWL_AMSDU_12K;
 764                 break;
 765         default:
 766                 pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME,
 767                        iwlwifi_mod_params.amsdu_size);
 768                 trans_cfg.rx_buf_size = rb_size_default;
 769         }
 770
 771         BUILD_BUG_ON(sizeof(struct iwl_ldbg_config_cmd) !=
 772                      LDBG_CFG_COMMAND_SIZE);
 773
 774         trans->wide_cmd_header = true;
 775         trans_cfg.bc_table_dword =
 776                 mvm->trans->cfg->device_family < IWL_DEVICE_FAMILY_22560;
 777
 778         trans_cfg.command_groups = iwl_mvm_groups;
 779         trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups);
 780
 781         trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE;
 782         trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
 783         trans_cfg.scd_set_active = true;
 784
 785         trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info,
 786                                           driver_data[2]);
 787
 788         trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD;
 789
 790         /* Set a short watchdog for the command queue */
 791         trans_cfg.cmd_q_wdg_timeout =
 792                 iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
 793
 794         snprintf(mvm->hw->wiphy->fw_version,
 795                  sizeof(mvm->hw->wiphy->fw_version),
 796                  "%s", fw->fw_version);
 797
 798         /* Configure transport layer */
 799         iwl_trans_configure(mvm->trans, &trans_cfg);
 800
 801         trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
 802         trans->dbg_dest_tlv = mvm->fw->dbg.dest_tlv;
 803         trans->dbg_n_dest_reg = mvm->fw->dbg.n_dest_reg;
 804         memcpy(trans->dbg_conf_tlv, mvm->fw->dbg.conf_tlv,
 805                sizeof(trans->dbg_conf_tlv));
 806         trans->dbg_trigger_tlv = mvm->fw->dbg.trigger_tlv;
 807
 808         trans->iml = mvm->fw->iml;
 809         trans->iml_len = mvm->fw->iml_len;
 810
 811         /* set up notification wait support */
 812         iwl_notification_wait_init(&mvm->notif_wait);
 813
 814         /* Init phy db */
 815         mvm->phy_db = iwl_phy_db_init(trans);
 816         if (!mvm->phy_db) {
 817                 IWL_ERR(mvm, "Cannot init phy_db\n");
 818                 goto out_free;
 819         }
 820
 821         IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
 822                  mvm->cfg->name, mvm->trans->hw_rev);
 823
 824         if (iwlwifi_mod_params.nvm_file)
 825                 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
 826         else
 827                 IWL_DEBUG_EEPROM(mvm->trans->dev,
 828                                  "working without external nvm file\n");
 829
 830         err = iwl_trans_start_hw(mvm->trans);
 831         if (err)
 832                 goto out_free;
 833
 834         mutex_lock(&mvm->mutex);
 835         iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE);
 836         err = iwl_run_init_mvm_ucode(mvm, true);
 837         if (err)
 838                 iwl_fw_dbg_error_collect(&mvm->fwrt, FW_DBG_TRIGGER_DRIVER);
 839         if (!iwlmvm_mod_params.init_dbg || !err)
 840                 iwl_mvm_stop_device(mvm);
 841         iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE);
 842         mutex_unlock(&mvm->mutex);
 843         if (err < 0) {
 844                 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
 845                 goto out_free;
 846         }
 847
 848         scan_size = iwl_mvm_scan_size(mvm);
 849
 850         mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
 851         if (!mvm->scan_cmd)
 852                 goto out_free;
 853
 854         /* Set EBS as successful as long as not stated otherwise by the FW. */
 855         mvm->last_ebs_successful = true;
 856
 857         err = iwl_mvm_mac_setup_register(mvm);
 858         if (err)
 859                 goto out_free;
 860         mvm->hw_registered = true;
 861
 862         min_backoff = iwl_mvm_min_backoff(mvm);
 863         iwl_mvm_thermal_initialize(mvm, min_backoff);
 864
 865         err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
 866         if (err)
 867                 goto out_unregister;
 868
 869         if (!iwl_mvm_has_new_rx_stats_api(mvm))
 870                 memset(&mvm->rx_stats_v3, 0,
 871                        sizeof(struct mvm_statistics_rx_v3));
 872         else
 873                 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
 874
 875         /* The transport always starts with a taken reference, we can
 876          * release it now if d0i3 is supported */
 877         if (iwl_mvm_is_d0i3_supported(mvm))
 878                 iwl_trans_unref(mvm->trans);
 879
 880         iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx);
 881
 882         return op_mode;
 883
 884  out_unregister:
 885         if (iwlmvm_mod_params.init_dbg)
 886                 return op_mode;
 887
 888         ieee80211_unregister_hw(mvm->hw);
 889         mvm->hw_registered = false;
 890         iwl_mvm_leds_exit(mvm);
 891         iwl_mvm_thermal_exit(mvm);
 892  out_free:
 893         iwl_fw_flush_dump(&mvm->fwrt);
 894         iwl_fw_runtime_free(&mvm->fwrt);
 895
 896         if (iwlmvm_mod_params.init_dbg)
 897                 return op_mode;
 898         iwl_phy_db_free(mvm->phy_db);
 899         kfree(mvm->scan_cmd);
 900         iwl_trans_op_mode_leave(trans);
 901
 902         ieee80211_free_hw(mvm->hw);
 903         return NULL;
 904 }
 905
 906 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
 907 {
 908         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 909         int i;
 910
 911         /* If d0i3 is supported, we have released the reference that
 912          * the transport started with, so we should take it back now
 913          * that we are leaving.
 914          */
 915         if (iwl_mvm_is_d0i3_supported(mvm))
 916                 iwl_trans_ref(mvm->trans);
 917
 918         iwl_mvm_leds_exit(mvm);
 919
 920         iwl_mvm_thermal_exit(mvm);
 921
 922         ieee80211_unregister_hw(mvm->hw);
 923
 924         kfree(mvm->scan_cmd);
 925         kfree(mvm->mcast_filter_cmd);
 926         mvm->mcast_filter_cmd = NULL;
 927
 928         kfree(mvm->error_recovery_buf);
 929         mvm->error_recovery_buf = NULL;
 930
 931 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
 932         kfree(mvm->d3_resume_sram);
 933 #endif
 934         iwl_trans_op_mode_leave(mvm->trans);
 935
 936         iwl_phy_db_free(mvm->phy_db);
 937         mvm->phy_db = NULL;
 938
 939         kfree(mvm->nvm_data);
 940         for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
 941                 kfree(mvm->nvm_sections[i].data);
 942
 943         cancel_delayed_work_sync(&mvm->tcm.work);
 944
 945         iwl_fw_runtime_free(&mvm->fwrt);
 946         mutex_destroy(&mvm->mutex);
 947         mutex_destroy(&mvm->d0i3_suspend_mutex);
 948
 949         ieee80211_free_hw(mvm->hw);
 950 }
 951
 952 struct iwl_async_handler_entry {
 953         struct list_head list;
 954         struct iwl_rx_cmd_buffer rxb;
 955         enum iwl_rx_handler_context context;
 956         void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
 957 };
 958
 959 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
 960 {
 961         struct iwl_async_handler_entry *entry, *tmp;
 962
 963         spin_lock_bh(&mvm->async_handlers_lock);
 964         list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
 965                 iwl_free_rxb(&entry->rxb);
 966                 list_del(&entry->list);
 967                 kfree(entry);
 968         }
 969         spin_unlock_bh(&mvm->async_handlers_lock);
 970 }
 971
 972 static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
 973 {
 974         struct iwl_mvm *mvm =
 975                 container_of(wk, struct iwl_mvm, async_handlers_wk);
 976         struct iwl_async_handler_entry *entry, *tmp;
 977         LIST_HEAD(local_list);
 978
 979         /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
 980
 981         /*
 982          * Sync with Rx path with a lock. Remove all the entries from this list,
 983          * add them to a local one (lock free), and then handle them.
 984          */
 985         spin_lock_bh(&mvm->async_handlers_lock);
 986         list_splice_init(&mvm->async_handlers_list, &local_list);
 987         spin_unlock_bh(&mvm->async_handlers_lock);
 988
 989         list_for_each_entry_safe(entry, tmp, &local_list, list) {
 990                 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
 991                         mutex_lock(&mvm->mutex);
 992                 entry->fn(mvm, &entry->rxb);
 993                 iwl_free_rxb(&entry->rxb);
 994                 list_del(&entry->list);
 995                 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
 996                         mutex_unlock(&mvm->mutex);
 997                 kfree(entry);
 998         }
 999 }
1000
1001 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm,
1002                                             struct iwl_rx_packet *pkt)
1003 {
1004         struct iwl_fw_dbg_trigger_tlv *trig;
1005         struct iwl_fw_dbg_trigger_cmd *cmds_trig;
1006         int i;
1007
1008         trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, NULL,
1009                                      FW_DBG_TRIGGER_FW_NOTIF);
1010         if (!trig)
1011                 return;
1012
1013         cmds_trig = (void *)trig->data;
1014
1015         for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) {
1016                 /* don't collect on CMD 0 */
1017                 if (!cmds_trig->cmds[i].cmd_id)
1018                         break;
1019
1020                 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
1021                     cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
1022                         continue;
1023
1024                 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
1025                                         "CMD 0x%02x.%02x received",
1026                                         pkt->hdr.group_id, pkt->hdr.cmd);
1027                 break;
1028         }
1029 }
1030
1031 static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
1032                               struct iwl_rx_cmd_buffer *rxb,
1033                               struct iwl_rx_packet *pkt)
1034 {
1035         int i;
1036
1037         iwl_mvm_rx_check_trigger(mvm, pkt);
1038
1039         /*
1040          * Do the notification wait before RX handlers so
1041          * even if the RX handler consumes the RXB we have
1042          * access to it in the notification wait entry.
1043          */
1044         iwl_notification_wait_notify(&mvm->notif_wait, pkt);
1045
1046         for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
1047                 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
1048                 struct iwl_async_handler_entry *entry;
1049
1050                 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
1051                         continue;
1052
1053                 if (rx_h->context == RX_HANDLER_SYNC) {
1054                         rx_h->fn(mvm, rxb);
1055                         return;
1056                 }
1057
1058                 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
1059                 /* we can't do much... */
1060                 if (!entry)
1061                         return;
1062
1063                 entry->rxb._page = rxb_steal_page(rxb);
1064                 entry->rxb._offset = rxb->_offset;
1065                 entry->rxb._rx_page_order = rxb->_rx_page_order;
1066                 entry->fn = rx_h->fn;
1067                 entry->context = rx_h->context;
1068                 spin_lock(&mvm->async_handlers_lock);
1069                 list_add_tail(&entry->list, &mvm->async_handlers_list);
1070                 spin_unlock(&mvm->async_handlers_lock);
1071                 schedule_work(&mvm->async_handlers_wk);
1072                 break;
1073         }
1074 }
1075
1076 static void iwl_mvm_rx(struct iwl_op_mode *op_mode,
1077                        struct napi_struct *napi,
1078                        struct iwl_rx_cmd_buffer *rxb)
1079 {
1080         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1081         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1082         u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1083
1084         if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1085                 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
1086         else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD))
1087                 iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
1088         else
1089                 iwl_mvm_rx_common(mvm, rxb, pkt);
1090 }
1091
1092 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode,
1093                           struct napi_struct *napi,
1094                           struct iwl_rx_cmd_buffer *rxb)
1095 {
1096         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1097         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1098         u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1099
1100         if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1101                 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0);
1102         else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1103                                          RX_QUEUES_NOTIFICATION)))
1104                 iwl_mvm_rx_queue_notif(mvm, rxb, 0);
1105         else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))
1106                 iwl_mvm_rx_frame_release(mvm, napi, rxb, 0);
1107         else if (cmd == WIDE_ID(DATA_PATH_GROUP, RX_NO_DATA_NOTIF))
1108                 iwl_mvm_rx_monitor_ndp(mvm, napi, rxb, 0);
1109         else
1110                 iwl_mvm_rx_common(mvm, rxb, pkt);
1111 }
1112
1113 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode,
1114                              const struct iwl_device_cmd *cmd)
1115 {
1116         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1117
1118         /*
1119          * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA
1120          * commands that need to block the Tx queues.
1121          */
1122         iwl_trans_block_txq_ptrs(mvm->trans, false);
1123 }
1124
1125 static int iwl_mvm_is_static_queue(struct iwl_mvm *mvm, int queue)
1126 {
1127         return queue == mvm->aux_queue || queue == mvm->probe_queue ||
1128                 queue == mvm->p2p_dev_queue || queue == mvm->snif_queue;
1129 }
1130
1131 static void iwl_mvm_queue_state_change(struct iwl_op_mode *op_mode,
1132                                        int hw_queue, bool start)
1133 {
1134         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1135         struct ieee80211_sta *sta;
1136         struct ieee80211_txq *txq;
1137         struct iwl_mvm_txq *mvmtxq;
1138         int i;
1139         unsigned long tid_bitmap;
1140         struct iwl_mvm_sta *mvmsta;
1141         u8 sta_id;
1142
1143         sta_id = iwl_mvm_has_new_tx_api(mvm) ?
1144                 mvm->tvqm_info[hw_queue].sta_id :
1145                 mvm->queue_info[hw_queue].ra_sta_id;
1146
1147         if (WARN_ON_ONCE(sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id)))
1148                 return;
1149
1150         rcu_read_lock();
1151
1152         sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1153         if (IS_ERR_OR_NULL(sta))
1154                 goto out;
1155         mvmsta = iwl_mvm_sta_from_mac80211(sta);
1156
1157         if (iwl_mvm_is_static_queue(mvm, hw_queue)) {
1158                 if (!start)
1159                         ieee80211_stop_queues(mvm->hw);
1160                 else if (mvmsta->sta_state != IEEE80211_STA_NOTEXIST)
1161                         ieee80211_wake_queues(mvm->hw);
1162
1163                 goto out;
1164         }
1165
1166         if (iwl_mvm_has_new_tx_api(mvm)) {
1167                 int tid = mvm->tvqm_info[hw_queue].txq_tid;
1168
1169                 tid_bitmap = BIT(tid);
1170         } else {
1171                 tid_bitmap = mvm->queue_info[hw_queue].tid_bitmap;
1172         }
1173
1174         for_each_set_bit(i, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
1175                 int tid = i;
1176
1177                 if (tid == IWL_MAX_TID_COUNT)
1178                         tid = IEEE80211_NUM_TIDS;
1179
1180                 txq = sta->txq[tid];
1181                 mvmtxq = iwl_mvm_txq_from_mac80211(txq);
1182                 mvmtxq->stopped = !start;
1183
1184                 if (start && mvmsta->sta_state != IEEE80211_STA_NOTEXIST)
1185                         iwl_mvm_mac_itxq_xmit(mvm->hw, txq);
1186         }
1187
1188 out:
1189         rcu_read_unlock();
1190 }
1191
1192 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1193 {
1194         iwl_mvm_queue_state_change(op_mode, hw_queue, false);
1195 }
1196
1197 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1198 {
1199         iwl_mvm_queue_state_change(op_mode, hw_queue, true);
1200 }
1201
1202 static void iwl_mvm_set_rfkill_state(struct iwl_mvm *mvm)
1203 {
1204         bool state = iwl_mvm_is_radio_killed(mvm);
1205
1206         if (state)
1207                 wake_up(&mvm->rx_sync_waitq);
1208
1209         wiphy_rfkill_set_hw_state(mvm->hw->wiphy, state);
1210 }
1211
1212 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
1213 {
1214         if (state)
1215                 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1216         else
1217                 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1218
1219         iwl_mvm_set_rfkill_state(mvm);
1220 }
1221
1222 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
1223 {
1224         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1225         bool calibrating = READ_ONCE(mvm->calibrating);
1226
1227         if (state)
1228                 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1229         else
1230                 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1231
1232         iwl_mvm_set_rfkill_state(mvm);
1233
1234         /* iwl_run_init_mvm_ucode is waiting for results, abort it */
1235         if (calibrating)
1236                 iwl_abort_notification_waits(&mvm->notif_wait);
1237
1238         /*
1239          * Stop the device if we run OPERATIONAL firmware or if we are in the
1240          * middle of the calibrations.
1241          */
1242         return state && (mvm->fwrt.cur_fw_img != IWL_UCODE_INIT || calibrating);
1243 }
1244
1245 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
1246 {
1247         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1248         struct ieee80211_tx_info *info;
1249
1250         info = IEEE80211_SKB_CB(skb);
1251         iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
1252         ieee80211_free_txskb(mvm->hw, skb);
1253 }
1254
1255 struct iwl_mvm_reprobe {
1256         struct device *dev;
1257         struct work_struct work;
1258 };
1259
1260 static void iwl_mvm_reprobe_wk(struct work_struct *wk)
1261 {
1262         struct iwl_mvm_reprobe *reprobe;
1263
1264         reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
1265         if (device_reprobe(reprobe->dev))
1266                 dev_err(reprobe->dev, "reprobe failed!\n");
1267         kfree(reprobe);
1268         module_put(THIS_MODULE);
1269 }
1270
1271 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
1272 {
1273         iwl_abort_notification_waits(&mvm->notif_wait);
1274
1275         /*
1276          * This is a bit racy, but worst case we tell mac80211 about
1277          * a stopped/aborted scan when that was already done which
1278          * is not a problem. It is necessary to abort any os scan
1279          * here because mac80211 requires having the scan cleared
1280          * before restarting.
1281          * We'll reset the scan_status to NONE in restart cleanup in
1282          * the next start() call from mac80211. If restart isn't called
1283          * (no fw restart) scan status will stay busy.
1284          */
1285         iwl_mvm_report_scan_aborted(mvm);
1286
1287         /*
1288          * If we're restarting already, don't cycle restarts.
1289          * If INIT fw asserted, it will likely fail again.
1290          * If WoWLAN fw asserted, don't restart either, mac80211
1291          * can't recover this since we're already half suspended.
1292          */
1293         if (!mvm->fw_restart && fw_error) {
1294                 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert,
1295                                         false, 0);
1296         } else if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1297                 struct iwl_mvm_reprobe *reprobe;
1298
1299                 IWL_ERR(mvm,
1300                         "Firmware error during reconfiguration - reprobe!\n");
1301
1302                 /*
1303                  * get a module reference to avoid doing this while unloading
1304                  * anyway and to avoid scheduling a work with code that's
1305                  * being removed.
1306                  */
1307                 if (!try_module_get(THIS_MODULE)) {
1308                         IWL_ERR(mvm, "Module is being unloaded - abort\n");
1309                         return;
1310                 }
1311
1312                 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
1313                 if (!reprobe) {
1314                         module_put(THIS_MODULE);
1315                         return;
1316                 }
1317                 reprobe->dev = mvm->trans->dev;
1318                 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
1319                 schedule_work(&reprobe->work);
1320         } else if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED,
1321                             &mvm->status)) {
1322                 IWL_ERR(mvm, "HW restart already requested, but not started\n");
1323         } else if (mvm->fwrt.cur_fw_img == IWL_UCODE_REGULAR &&
1324                    mvm->hw_registered &&
1325                    !test_bit(STATUS_TRANS_DEAD, &mvm->trans->status)) {
1326                 /* don't let the transport/FW power down */
1327                 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1328
1329                 if (mvm->fw->ucode_capa.error_log_size) {
1330                         u32 src_size = mvm->fw->ucode_capa.error_log_size;
1331                         u32 src_addr = mvm->fw->ucode_capa.error_log_addr;
1332                         u8 *recover_buf = kzalloc(src_size, GFP_ATOMIC);
1333
1334                         if (recover_buf) {
1335                                 mvm->error_recovery_buf = recover_buf;
1336                                 iwl_trans_read_mem_bytes(mvm->trans,
1337                                                          src_addr,
1338                                                          recover_buf,
1339                                                          src_size);
1340                         }
1341                 }
1342
1343                 if (fw_error && mvm->fw_restart > 0)
1344                         mvm->fw_restart--;
1345                 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
1346                 ieee80211_restart_hw(mvm->hw);
1347         }
1348 }
1349
1350 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
1351 {
1352         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1353
1354         if (!test_bit(STATUS_TRANS_DEAD, &mvm->trans->status))
1355                 iwl_mvm_dump_nic_error_log(mvm);
1356
1357         iwl_mvm_nic_restart(mvm, true);
1358 }
1359
1360 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
1361 {
1362         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1363
1364         WARN_ON(1);
1365         iwl_mvm_nic_restart(mvm, true);
1366 }
1367
1368 #ifdef CONFIG_PM
1369 struct iwl_d0i3_iter_data {
1370         struct iwl_mvm *mvm;
1371         struct ieee80211_vif *connected_vif;
1372         u8 ap_sta_id;
1373         u8 vif_count;
1374         u8 offloading_tid;
1375         bool disable_offloading;
1376 };
1377
1378 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm,
1379                                         struct ieee80211_vif *vif,
1380                                         struct iwl_d0i3_iter_data *iter_data)
1381 {
1382         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1383         struct iwl_mvm_sta *mvmsta;
1384         u32 available_tids = 0;
1385         u8 tid;
1386
1387         if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
1388                     mvmvif->ap_sta_id == IWL_MVM_INVALID_STA))
1389                 return false;
1390
1391         mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
1392         if (!mvmsta)
1393                 return false;
1394
1395         spin_lock_bh(&mvmsta->lock);
1396         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1397                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
1398
1399                 /*
1400                  * in case of pending tx packets, don't use this tid
1401                  * for offloading in order to prevent reuse of the same
1402                  * qos seq counters.
1403                  */
1404                 if (iwl_mvm_tid_queued(mvm, tid_data))
1405                         continue;
1406
1407                 if (tid_data->state != IWL_AGG_OFF)
1408                         continue;
1409
1410                 available_tids |= BIT(tid);
1411         }
1412         spin_unlock_bh(&mvmsta->lock);
1413
1414         /*
1415          * disallow protocol offloading if we have no available tid
1416          * (with no pending frames and no active aggregation,
1417          * as we don't handle "holes" properly - the scheduler needs the
1418          * frame's seq number and TFD index to match)
1419          */
1420         if (!available_tids)
1421                 return true;
1422
1423         /* for simplicity, just use the first available tid */
1424         iter_data->offloading_tid = ffs(available_tids) - 1;
1425         return false;
1426 }
1427
1428 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
1429                                         struct ieee80211_vif *vif)
1430 {
1431         struct iwl_d0i3_iter_data *data = _data;
1432         struct iwl_mvm *mvm = data->mvm;
1433         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1434         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1435
1436         IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr);
1437         if (vif->type != NL80211_IFTYPE_STATION ||
1438             !vif->bss_conf.assoc)
1439                 return;
1440
1441         /*
1442          * in case of pending tx packets or active aggregations,
1443          * avoid offloading features in order to prevent reuse of
1444          * the same qos seq counters.
1445          */
1446         if (iwl_mvm_disallow_offloading(mvm, vif, data))
1447                 data->disable_offloading = true;
1448
1449         iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
1450         iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading,
1451                                    false, flags);
1452
1453         /*
1454          * on init/association, mvm already configures POWER_TABLE_CMD
1455          * and REPLY_MCAST_FILTER_CMD, so currently don't
1456          * reconfigure them (we might want to use different
1457          * params later on, though).
1458          */
1459         data->ap_sta_id = mvmvif->ap_sta_id;
1460         data->vif_count++;
1461
1462         /*
1463          * no new commands can be sent at this stage, so it's safe
1464          * to save the vif pointer during d0i3 entrance.
1465          */
1466         data->connected_vif = vif;
1467 }
1468
1469 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
1470                                     struct iwl_wowlan_config_cmd *cmd,
1471                                     struct iwl_d0i3_iter_data *iter_data)
1472 {
1473         struct ieee80211_sta *ap_sta;
1474         struct iwl_mvm_sta *mvm_ap_sta;
1475
1476         if (iter_data->ap_sta_id == IWL_MVM_INVALID_STA)
1477                 return;
1478
1479         rcu_read_lock();
1480
1481         ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]);
1482         if (IS_ERR_OR_NULL(ap_sta))
1483                 goto out;
1484
1485         mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
1486         cmd->is_11n_connection = ap_sta->ht_cap.ht_supported;
1487         cmd->offloading_tid = iter_data->offloading_tid;
1488         cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING |
1489                 ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON;
1490         /*
1491          * The d0i3 uCode takes care of the nonqos counters,
1492          * so configure only the qos seq ones.
1493          */
1494         iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd);
1495 out:
1496         rcu_read_unlock();
1497 }
1498
1499 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
1500 {
1501         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1502         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1503         int ret;
1504         struct iwl_d0i3_iter_data d0i3_iter_data = {
1505                 .mvm = mvm,
1506         };
1507         struct iwl_wowlan_config_cmd wowlan_config_cmd = {
1508                 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
1509                                              IWL_WOWLAN_WAKEUP_BEACON_MISS |
1510                                              IWL_WOWLAN_WAKEUP_LINK_CHANGE),
1511         };
1512         struct iwl_d3_manager_config d3_cfg_cmd = {
1513                 .min_sleep_time = cpu_to_le32(1000),
1514                 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR),
1515         };
1516
1517         IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
1518
1519         if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR))
1520                 return -EINVAL;
1521
1522         set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1523
1524         /*
1525          * iwl_mvm_ref_sync takes a reference before checking the flag.
1526          * so by checking there is no held reference we prevent a state
1527          * in which iwl_mvm_ref_sync continues successfully while we
1528          * configure the firmware to enter d0i3
1529          */
1530         if (iwl_mvm_ref_taken(mvm)) {
1531                 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n");
1532                 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1533                 wake_up(&mvm->d0i3_exit_waitq);
1534                 return 1;
1535         }
1536
1537         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1538                                                    IEEE80211_IFACE_ITER_NORMAL,
1539                                                    iwl_mvm_enter_d0i3_iterator,
1540                                                    &d0i3_iter_data);
1541         if (d0i3_iter_data.vif_count == 1) {
1542                 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
1543                 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
1544         } else {
1545                 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
1546                 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1547                 mvm->d0i3_offloading = false;
1548         }
1549
1550         iwl_mvm_pause_tcm(mvm, true);
1551         /* make sure we have no running tx while configuring the seqno */
1552         synchronize_net();
1553
1554         /* Flush the hw queues, in case something got queued during entry */
1555         /* TODO new tx api */
1556         if (iwl_mvm_has_new_tx_api(mvm)) {
1557                 WARN_ONCE(1, "d0i3: Need to implement flush TX queue\n");
1558         } else {
1559                 ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm),
1560                                             flags);
1561                 if (ret)
1562                         return ret;
1563         }
1564
1565         /* configure wowlan configuration only if needed */
1566         if (mvm->d0i3_ap_sta_id != IWL_MVM_INVALID_STA) {
1567                 /* wake on beacons only if beacon storing isn't supported */
1568                 if (!fw_has_capa(&mvm->fw->ucode_capa,
1569                                  IWL_UCODE_TLV_CAPA_BEACON_STORING))
1570                         wowlan_config_cmd.wakeup_filter |=
1571                                 cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING);
1572
1573                 iwl_mvm_wowlan_config_key_params(mvm,
1574                                                  d0i3_iter_data.connected_vif,
1575                                                  true, flags);
1576
1577                 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd,
1578                                         &d0i3_iter_data);
1579
1580                 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags,
1581                                            sizeof(wowlan_config_cmd),
1582                                            &wowlan_config_cmd);
1583                 if (ret)
1584                         return ret;
1585         }
1586
1587         return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
1588                                     flags | CMD_MAKE_TRANS_IDLE,
1589                                     sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1590 }
1591
1592 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac,
1593                                        struct ieee80211_vif *vif)
1594 {
1595         struct iwl_mvm *mvm = _data;
1596         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO;
1597
1598         IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr);
1599         if (vif->type != NL80211_IFTYPE_STATION ||
1600             !vif->bss_conf.assoc)
1601                 return;
1602
1603         iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags);
1604 }
1605
1606 struct iwl_mvm_d0i3_exit_work_iter_data {
1607         struct iwl_mvm *mvm;
1608         struct iwl_wowlan_status *status;
1609         u32 wakeup_reasons;
1610 };
1611
1612 static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac,
1613                                         struct ieee80211_vif *vif)
1614 {
1615         struct iwl_mvm_d0i3_exit_work_iter_data *data = _data;
1616         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1617         u32 reasons = data->wakeup_reasons;
1618
1619         /* consider only the relevant station interface */
1620         if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1621             data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id)
1622                 return;
1623
1624         if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)
1625                 iwl_mvm_connection_loss(data->mvm, vif, "D0i3");
1626         else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON)
1627                 ieee80211_beacon_loss(vif);
1628         else
1629                 iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status);
1630 }
1631
1632 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq)
1633 {
1634         struct ieee80211_sta *sta = NULL;
1635         struct iwl_mvm_sta *mvm_ap_sta;
1636         int i;
1637         bool wake_queues = false;
1638
1639         lockdep_assert_held(&mvm->mutex);
1640
1641         spin_lock_bh(&mvm->d0i3_tx_lock);
1642
1643         if (mvm->d0i3_ap_sta_id == IWL_MVM_INVALID_STA)
1644                 goto out;
1645
1646         IWL_DEBUG_RPM(mvm, "re-enqueue packets\n");
1647
1648         /* get the sta in order to update seq numbers and re-enqueue skbs */
1649         sta = rcu_dereference_protected(
1650                         mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id],
1651                         lockdep_is_held(&mvm->mutex));
1652
1653         if (IS_ERR_OR_NULL(sta)) {
1654                 sta = NULL;
1655                 goto out;
1656         }
1657
1658         if (mvm->d0i3_offloading && qos_seq) {
1659                 /* update qos seq numbers if offloading was enabled */
1660                 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta);
1661                 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1662                         u16 seq = le16_to_cpu(qos_seq[i]);
1663                         /* firmware stores last-used one, we store next one */
1664                         seq += 0x10;
1665                         mvm_ap_sta->tid_data[i].seq_number = seq;
1666                 }
1667         }
1668 out:
1669         /* re-enqueue (or drop) all packets */
1670         while (!skb_queue_empty(&mvm->d0i3_tx)) {
1671                 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx);
1672
1673                 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta))
1674                         ieee80211_free_txskb(mvm->hw, skb);
1675
1676                 /* if the skb_queue is not empty, we need to wake queues */
1677                 wake_queues = true;
1678         }
1679         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1680         wake_up(&mvm->d0i3_exit_waitq);
1681         mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1682         if (wake_queues)
1683                 ieee80211_wake_queues(mvm->hw);
1684
1685         spin_unlock_bh(&mvm->d0i3_tx_lock);
1686 }
1687
1688 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk)
1689 {
1690         struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work);
1691         struct iwl_mvm_d0i3_exit_work_iter_data iter_data = {
1692                 .mvm = mvm,
1693         };
1694
1695         struct iwl_wowlan_status *status;
1696         u32 wakeup_reasons = 0;
1697         __le16 *qos_seq = NULL;
1698
1699         mutex_lock(&mvm->mutex);
1700
1701         status = iwl_mvm_send_wowlan_get_status(mvm);
1702         if (IS_ERR_OR_NULL(status)) {
1703                 /* set to NULL so we don't need to check before kfree'ing */
1704                 status = NULL;
1705                 goto out;
1706         }
1707
1708         wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
1709         qos_seq = status->qos_seq_ctr;
1710
1711         IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);
1712
1713         iter_data.wakeup_reasons = wakeup_reasons;
1714         iter_data.status = status;
1715         ieee80211_iterate_active_interfaces(mvm->hw,
1716                                             IEEE80211_IFACE_ITER_NORMAL,
1717                                             iwl_mvm_d0i3_exit_work_iter,
1718                                             &iter_data);
1719 out:
1720         iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
1721
1722         IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n",
1723                        wakeup_reasons);
1724
1725         /* qos_seq might point inside resp_pkt, so free it only now */
1726         kfree(status);
1727
1728         /* the FW might have updated the regdomain */
1729         iwl_mvm_update_changed_regdom(mvm);
1730
1731         iwl_mvm_resume_tcm(mvm);
1732         iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
1733         mutex_unlock(&mvm->mutex);
1734 }
1735
1736 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
1737 {
1738         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
1739                     CMD_WAKE_UP_TRANS;
1740         int ret;
1741
1742         IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
1743
1744         if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR))
1745                 return -EINVAL;
1746
1747         mutex_lock(&mvm->d0i3_suspend_mutex);
1748         if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) {
1749                 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n");
1750                 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags);
1751                 mutex_unlock(&mvm->d0i3_suspend_mutex);
1752                 return 0;
1753         }
1754         mutex_unlock(&mvm->d0i3_suspend_mutex);
1755
1756         ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
1757         if (ret)
1758                 goto out;
1759
1760         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1761                                                    IEEE80211_IFACE_ITER_NORMAL,
1762                                                    iwl_mvm_exit_d0i3_iterator,
1763                                                    mvm);
1764 out:
1765         schedule_work(&mvm->d0i3_exit_work);
1766         return ret;
1767 }
1768
1769 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
1770 {
1771         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1772
1773         iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK);
1774         return _iwl_mvm_exit_d0i3(mvm);
1775 }
1776
1777 #define IWL_MVM_D0I3_OPS                                        \
1778         .enter_d0i3 = iwl_mvm_enter_d0i3,                       \
1779         .exit_d0i3 = iwl_mvm_exit_d0i3,
1780 #else /* CONFIG_PM */
1781 #define IWL_MVM_D0I3_OPS
1782 #endif /* CONFIG_PM */
1783
1784 #define IWL_MVM_COMMON_OPS                                      \
1785         /* these could be differentiated */                     \
1786         .async_cb = iwl_mvm_async_cb,                           \
1787         .queue_full = iwl_mvm_stop_sw_queue,                    \
1788         .queue_not_full = iwl_mvm_wake_sw_queue,                \
1789         .hw_rf_kill = iwl_mvm_set_hw_rfkill_state,              \
1790         .free_skb = iwl_mvm_free_skb,                           \
1791         .nic_error = iwl_mvm_nic_error,                         \
1792         .cmd_queue_full = iwl_mvm_cmd_queue_full,               \
1793         .nic_config = iwl_mvm_nic_config,                       \
1794         IWL_MVM_D0I3_OPS                                        \
1795         /* as we only register one, these MUST be common! */    \
1796         .start = iwl_op_mode_mvm_start,                         \
1797         .stop = iwl_op_mode_mvm_stop
1798
1799 static const struct iwl_op_mode_ops iwl_mvm_ops = {
1800         IWL_MVM_COMMON_OPS,
1801         .rx = iwl_mvm_rx,
1802 };
1803
1804 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode,
1805                               struct napi_struct *napi,
1806                               struct iwl_rx_cmd_buffer *rxb,
1807                               unsigned int queue)
1808 {
1809         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1810         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1811         u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1812
1813         if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)))
1814                 iwl_mvm_rx_frame_release(mvm, napi, rxb, queue);
1815         else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1816                                          RX_QUEUES_NOTIFICATION)))
1817                 iwl_mvm_rx_queue_notif(mvm, rxb, queue);
1818         else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1819                 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue);
1820 }
1821
1822 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = {
1823         IWL_MVM_COMMON_OPS,
1824         .rx = iwl_mvm_rx_mq,
1825         .rx_rss = iwl_mvm_rx_mq_rss,
1826 };