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 <[email protected]>
  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         spin_lock_init(&mvm->queue_info_lock);
 680
 681         INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
 682         INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
 683 #ifdef CONFIG_PM
 684         INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
 685 #endif
 686         INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
 687         INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk);
 688         INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk);
 689
 690         spin_lock_init(&mvm->d0i3_tx_lock);
 691         spin_lock_init(&mvm->refs_lock);
 692         skb_queue_head_init(&mvm->d0i3_tx);
 693         init_waitqueue_head(&mvm->d0i3_exit_waitq);
 694         init_waitqueue_head(&mvm->rx_sync_waitq);
 695
 696         atomic_set(&mvm->queue_sync_counter, 0);
 697
 698         SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
 699
 700         spin_lock_init(&mvm->tcm.lock);
 701         INIT_DELAYED_WORK(&mvm->tcm.work, iwl_mvm_tcm_work);
 702         mvm->tcm.ts = jiffies;
 703         mvm->tcm.ll_ts = jiffies;
 704         mvm->tcm.uapsd_nonagg_ts = jiffies;
 705
 706         INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork);
 707
 708         /*
 709          * Populate the state variables that the transport layer needs
 710          * to know about.
 711          */
 712         trans_cfg.op_mode = op_mode;
 713         trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
 714         trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
 715
 716         if (mvm->trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560)
 717                 rb_size_default = IWL_AMSDU_2K;
 718         else
 719                 rb_size_default = IWL_AMSDU_4K;
 720
 721         switch (iwlwifi_mod_params.amsdu_size) {
 722         case IWL_AMSDU_DEF:
 723                 trans_cfg.rx_buf_size = rb_size_default;
 724                 break;
 725         case IWL_AMSDU_4K:
 726                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 727                 break;
 728         case IWL_AMSDU_8K:
 729                 trans_cfg.rx_buf_size = IWL_AMSDU_8K;
 730                 break;
 731         case IWL_AMSDU_12K:
 732                 trans_cfg.rx_buf_size = IWL_AMSDU_12K;
 733                 break;
 734         default:
 735                 pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME,
 736                        iwlwifi_mod_params.amsdu_size);
 737                 trans_cfg.rx_buf_size = rb_size_default;
 738         }
 739
 740         trans->wide_cmd_header = true;
 741         trans_cfg.bc_table_dword =
 742                 mvm->trans->cfg->device_family < IWL_DEVICE_FAMILY_22560;
 743
 744         trans_cfg.command_groups = iwl_mvm_groups;
 745         trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups);
 746
 747         trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE;
 748         trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
 749         trans_cfg.scd_set_active = true;
 750
 751         trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info,
 752                                           driver_data[2]);
 753
 754         trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD;
 755
 756         /* Set a short watchdog for the command queue */
 757         trans_cfg.cmd_q_wdg_timeout =
 758                 iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
 759
 760         snprintf(mvm->hw->wiphy->fw_version,
 761                  sizeof(mvm->hw->wiphy->fw_version),
 762                  "%s", fw->fw_version);
 763
 764         /* Configure transport layer */
 765         iwl_trans_configure(mvm->trans, &trans_cfg);
 766
 767         trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
 768         trans->dbg_dest_tlv = mvm->fw->dbg.dest_tlv;
 769         trans->dbg_n_dest_reg = mvm->fw->dbg.n_dest_reg;
 770         memcpy(trans->dbg_conf_tlv, mvm->fw->dbg.conf_tlv,
 771                sizeof(trans->dbg_conf_tlv));
 772         trans->dbg_trigger_tlv = mvm->fw->dbg.trigger_tlv;
 773         trans->dbg_dump_mask = mvm->fw->dbg.dump_mask;
 774
 775         trans->iml = mvm->fw->iml;
 776         trans->iml_len = mvm->fw->iml_len;
 777
 778         /* set up notification wait support */
 779         iwl_notification_wait_init(&mvm->notif_wait);
 780
 781         /* Init phy db */
 782         mvm->phy_db = iwl_phy_db_init(trans);
 783         if (!mvm->phy_db) {
 784                 IWL_ERR(mvm, "Cannot init phy_db\n");
 785                 goto out_free;
 786         }
 787
 788         IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
 789                  mvm->cfg->name, mvm->trans->hw_rev);
 790
 791         if (iwlwifi_mod_params.nvm_file)
 792                 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
 793         else
 794                 IWL_DEBUG_EEPROM(mvm->trans->dev,
 795                                  "working without external nvm file\n");
 796
 797         err = iwl_trans_start_hw(mvm->trans);
 798         if (err)
 799                 goto out_free;
 800
 801         mutex_lock(&mvm->mutex);
 802         iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE);
 803         err = iwl_run_init_mvm_ucode(mvm, true);
 804         if (test_bit(IWL_FWRT_STATUS_WAIT_ALIVE, &mvm->fwrt.status))
 805                 iwl_fw_alive_error_dump(&mvm->fwrt);
 806         if (!iwlmvm_mod_params.init_dbg || !err)
 807                 iwl_mvm_stop_device(mvm);
 808         iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE);
 809         mutex_unlock(&mvm->mutex);
 810         if (err < 0) {
 811                 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
 812                 goto out_free;
 813         }
 814
 815         scan_size = iwl_mvm_scan_size(mvm);
 816
 817         mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
 818         if (!mvm->scan_cmd)
 819                 goto out_free;
 820
 821         /* Set EBS as successful as long as not stated otherwise by the FW. */
 822         mvm->last_ebs_successful = true;
 823
 824         err = iwl_mvm_mac_setup_register(mvm);
 825         if (err)
 826                 goto out_free;
 827         mvm->hw_registered = true;
 828
 829         min_backoff = iwl_mvm_min_backoff(mvm);
 830         iwl_mvm_thermal_initialize(mvm, min_backoff);
 831
 832         err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
 833         if (err)
 834                 goto out_unregister;
 835
 836         if (!iwl_mvm_has_new_rx_stats_api(mvm))
 837                 memset(&mvm->rx_stats_v3, 0,
 838                        sizeof(struct mvm_statistics_rx_v3));
 839         else
 840                 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
 841
 842         /* The transport always starts with a taken reference, we can
 843          * release it now if d0i3 is supported */
 844         if (iwl_mvm_is_d0i3_supported(mvm))
 845                 iwl_trans_unref(mvm->trans);
 846
 847         iwl_mvm_tof_init(mvm);
 848
 849         return op_mode;
 850
 851  out_unregister:
 852         if (iwlmvm_mod_params.init_dbg)
 853                 return op_mode;
 854
 855         ieee80211_unregister_hw(mvm->hw);
 856         mvm->hw_registered = false;
 857         iwl_mvm_leds_exit(mvm);
 858         iwl_mvm_thermal_exit(mvm);
 859  out_free:
 860         iwl_fw_flush_dump(&mvm->fwrt);
 861         iwl_fw_runtime_free(&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         iwl_fw_runtime_free(&mvm->fwrt);
 915         mutex_destroy(&mvm->mutex);
 916         mutex_destroy(&mvm->d0i3_suspend_mutex);
 917
 918         ieee80211_free_hw(mvm->hw);
 919 }
 920
 921 struct iwl_async_handler_entry {
 922         struct list_head list;
 923         struct iwl_rx_cmd_buffer rxb;
 924         enum iwl_rx_handler_context context;
 925         void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
 926 };
 927
 928 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
 929 {
 930         struct iwl_async_handler_entry *entry, *tmp;
 931
 932         spin_lock_bh(&mvm->async_handlers_lock);
 933         list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
 934                 iwl_free_rxb(&entry->rxb);
 935                 list_del(&entry->list);
 936                 kfree(entry);
 937         }
 938         spin_unlock_bh(&mvm->async_handlers_lock);
 939 }
 940
 941 static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
 942 {
 943         struct iwl_mvm *mvm =
 944                 container_of(wk, struct iwl_mvm, async_handlers_wk);
 945         struct iwl_async_handler_entry *entry, *tmp;
 946         LIST_HEAD(local_list);
 947
 948         /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
 949
 950         /*
 951          * Sync with Rx path with a lock. Remove all the entries from this list,
 952          * add them to a local one (lock free), and then handle them.
 953          */
 954         spin_lock_bh(&mvm->async_handlers_lock);
 955         list_splice_init(&mvm->async_handlers_list, &local_list);
 956         spin_unlock_bh(&mvm->async_handlers_lock);
 957
 958         list_for_each_entry_safe(entry, tmp, &local_list, list) {
 959                 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
 960                         mutex_lock(&mvm->mutex);
 961                 entry->fn(mvm, &entry->rxb);
 962                 iwl_free_rxb(&entry->rxb);
 963                 list_del(&entry->list);
 964                 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
 965                         mutex_unlock(&mvm->mutex);
 966                 kfree(entry);
 967         }
 968 }
 969
 970 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm,
 971                                             struct iwl_rx_packet *pkt)
 972 {
 973         struct iwl_fw_dbg_trigger_tlv *trig;
 974         struct iwl_fw_dbg_trigger_cmd *cmds_trig;
 975         int i;
 976
 977         trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, NULL,
 978                                      FW_DBG_TRIGGER_FW_NOTIF);
 979         if (!trig)
 980                 return;
 981
 982         cmds_trig = (void *)trig->data;
 983
 984         for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) {
 985                 /* don't collect on CMD 0 */
 986                 if (!cmds_trig->cmds[i].cmd_id)
 987                         break;
 988
 989                 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
 990                     cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
 991                         continue;
 992
 993                 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
 994                                         "CMD 0x%02x.%02x received",
 995                                         pkt->hdr.group_id, pkt->hdr.cmd);
 996                 break;
 997         }
 998 }
 999
1000 static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
1001                               struct iwl_rx_cmd_buffer *rxb,
1002                               struct iwl_rx_packet *pkt)
1003 {
1004         int i;
1005
1006         iwl_mvm_rx_check_trigger(mvm, pkt);
1007
1008         /*
1009          * Do the notification wait before RX handlers so
1010          * even if the RX handler consumes the RXB we have
1011          * access to it in the notification wait entry.
1012          */
1013         iwl_notification_wait_notify(&mvm->notif_wait, pkt);
1014
1015         for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
1016                 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
1017                 struct iwl_async_handler_entry *entry;
1018
1019                 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
1020                         continue;
1021
1022                 if (rx_h->context == RX_HANDLER_SYNC) {
1023                         rx_h->fn(mvm, rxb);
1024                         return;
1025                 }
1026
1027                 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
1028                 /* we can't do much... */
1029                 if (!entry)
1030                         return;
1031
1032                 entry->rxb._page = rxb_steal_page(rxb);
1033                 entry->rxb._offset = rxb->_offset;
1034                 entry->rxb._rx_page_order = rxb->_rx_page_order;
1035                 entry->fn = rx_h->fn;
1036                 entry->context = rx_h->context;
1037                 spin_lock(&mvm->async_handlers_lock);
1038                 list_add_tail(&entry->list, &mvm->async_handlers_list);
1039                 spin_unlock(&mvm->async_handlers_lock);
1040                 schedule_work(&mvm->async_handlers_wk);
1041                 break;
1042         }
1043 }
1044
1045 static void iwl_mvm_rx(struct iwl_op_mode *op_mode,
1046                        struct napi_struct *napi,
1047                        struct iwl_rx_cmd_buffer *rxb)
1048 {
1049         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1050         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1051         u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1052
1053         if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1054                 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
1055         else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD))
1056                 iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
1057         else
1058                 iwl_mvm_rx_common(mvm, rxb, pkt);
1059 }
1060
1061 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode,
1062                           struct napi_struct *napi,
1063                           struct iwl_rx_cmd_buffer *rxb)
1064 {
1065         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1066         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1067         u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1068
1069         if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1070                 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0);
1071         else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1072                                          RX_QUEUES_NOTIFICATION)))
1073                 iwl_mvm_rx_queue_notif(mvm, rxb, 0);
1074         else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))
1075                 iwl_mvm_rx_frame_release(mvm, napi, rxb, 0);
1076         else
1077                 iwl_mvm_rx_common(mvm, rxb, pkt);
1078 }
1079
1080 void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
1081 {
1082         int q;
1083
1084         if (WARN_ON_ONCE(!mq))
1085                 return;
1086
1087         for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
1088                 if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) {
1089                         IWL_DEBUG_TX_QUEUES(mvm,
1090                                             "mac80211 %d already stopped\n", q);
1091                         continue;
1092                 }
1093
1094                 ieee80211_stop_queue(mvm->hw, q);
1095         }
1096 }
1097
1098 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode,
1099                              const struct iwl_device_cmd *cmd)
1100 {
1101         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1102
1103         /*
1104          * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA
1105          * commands that need to block the Tx queues.
1106          */
1107         iwl_trans_block_txq_ptrs(mvm->trans, false);
1108 }
1109
1110 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1111 {
1112         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1113         unsigned long mq;
1114
1115         spin_lock_bh(&mvm->queue_info_lock);
1116         mq = mvm->hw_queue_to_mac80211[hw_queue];
1117         spin_unlock_bh(&mvm->queue_info_lock);
1118
1119         iwl_mvm_stop_mac_queues(mvm, mq);
1120 }
1121
1122 void iwl_mvm_start_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
1123 {
1124         int q;
1125
1126         if (WARN_ON_ONCE(!mq))
1127                 return;
1128
1129         for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
1130                 if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) {
1131                         IWL_DEBUG_TX_QUEUES(mvm,
1132                                             "mac80211 %d still stopped\n", q);
1133                         continue;
1134                 }
1135
1136                 ieee80211_wake_queue(mvm->hw, q);
1137         }
1138 }
1139
1140 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1141 {
1142         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1143         unsigned long mq;
1144
1145         spin_lock_bh(&mvm->queue_info_lock);
1146         mq = mvm->hw_queue_to_mac80211[hw_queue];
1147         spin_unlock_bh(&mvm->queue_info_lock);
1148
1149         iwl_mvm_start_mac_queues(mvm, mq);
1150 }
1151
1152 static void iwl_mvm_set_rfkill_state(struct iwl_mvm *mvm)
1153 {
1154         bool state = iwl_mvm_is_radio_killed(mvm);
1155
1156         if (state)
1157                 wake_up(&mvm->rx_sync_waitq);
1158
1159         wiphy_rfkill_set_hw_state(mvm->hw->wiphy, state);
1160 }
1161
1162 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
1163 {
1164         if (state)
1165                 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1166         else
1167                 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1168
1169         iwl_mvm_set_rfkill_state(mvm);
1170 }
1171
1172 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
1173 {
1174         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1175         bool calibrating = READ_ONCE(mvm->calibrating);
1176
1177         if (state)
1178                 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1179         else
1180                 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1181
1182         iwl_mvm_set_rfkill_state(mvm);
1183
1184         /* iwl_run_init_mvm_ucode is waiting for results, abort it */
1185         if (calibrating)
1186                 iwl_abort_notification_waits(&mvm->notif_wait);
1187
1188         /*
1189          * Stop the device if we run OPERATIONAL firmware or if we are in the
1190          * middle of the calibrations.
1191          */
1192         return state && (mvm->fwrt.cur_fw_img != IWL_UCODE_INIT || calibrating);
1193 }
1194
1195 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
1196 {
1197         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1198         struct ieee80211_tx_info *info;
1199
1200         info = IEEE80211_SKB_CB(skb);
1201         iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
1202         ieee80211_free_txskb(mvm->hw, skb);
1203 }
1204
1205 struct iwl_mvm_reprobe {
1206         struct device *dev;
1207         struct work_struct work;
1208 };
1209
1210 static void iwl_mvm_reprobe_wk(struct work_struct *wk)
1211 {
1212         struct iwl_mvm_reprobe *reprobe;
1213
1214         reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
1215         if (device_reprobe(reprobe->dev))
1216                 dev_err(reprobe->dev, "reprobe failed!\n");
1217         kfree(reprobe);
1218         module_put(THIS_MODULE);
1219 }
1220
1221 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
1222 {
1223         iwl_abort_notification_waits(&mvm->notif_wait);
1224
1225         /*
1226          * This is a bit racy, but worst case we tell mac80211 about
1227          * a stopped/aborted scan when that was already done which
1228          * is not a problem. It is necessary to abort any os scan
1229          * here because mac80211 requires having the scan cleared
1230          * before restarting.
1231          * We'll reset the scan_status to NONE in restart cleanup in
1232          * the next start() call from mac80211. If restart isn't called
1233          * (no fw restart) scan status will stay busy.
1234          */
1235         iwl_mvm_report_scan_aborted(mvm);
1236
1237         /*
1238          * If we're restarting already, don't cycle restarts.
1239          * If INIT fw asserted, it will likely fail again.
1240          * If WoWLAN fw asserted, don't restart either, mac80211
1241          * can't recover this since we're already half suspended.
1242          */
1243         if (!mvm->fw_restart && fw_error) {
1244                 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert,
1245                                         NULL, 0);
1246         } else if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1247                 struct iwl_mvm_reprobe *reprobe;
1248
1249                 IWL_ERR(mvm,
1250                         "Firmware error during reconfiguration - reprobe!\n");
1251
1252                 /*
1253                  * get a module reference to avoid doing this while unloading
1254                  * anyway and to avoid scheduling a work with code that's
1255                  * being removed.
1256                  */
1257                 if (!try_module_get(THIS_MODULE)) {
1258                         IWL_ERR(mvm, "Module is being unloaded - abort\n");
1259                         return;
1260                 }
1261
1262                 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
1263                 if (!reprobe) {
1264                         module_put(THIS_MODULE);
1265                         return;
1266                 }
1267                 reprobe->dev = mvm->trans->dev;
1268                 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
1269                 schedule_work(&reprobe->work);
1270         } else if (mvm->fwrt.cur_fw_img == IWL_UCODE_REGULAR &&
1271                    mvm->hw_registered &&
1272                    !test_bit(STATUS_TRANS_DEAD, &mvm->trans->status)) {
1273                 /* don't let the transport/FW power down */
1274                 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1275
1276                 if (fw_error && mvm->fw_restart > 0)
1277                         mvm->fw_restart--;
1278                 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
1279                 ieee80211_restart_hw(mvm->hw);
1280         }
1281 }
1282
1283 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
1284 {
1285         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1286
1287         if (!test_bit(STATUS_TRANS_DEAD, &mvm->trans->status))
1288                 iwl_mvm_dump_nic_error_log(mvm);
1289
1290         iwl_mvm_nic_restart(mvm, true);
1291 }
1292
1293 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
1294 {
1295         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1296
1297         WARN_ON(1);
1298         iwl_mvm_nic_restart(mvm, true);
1299 }
1300
1301 #ifdef CONFIG_PM
1302 struct iwl_d0i3_iter_data {
1303         struct iwl_mvm *mvm;
1304         struct ieee80211_vif *connected_vif;
1305         u8 ap_sta_id;
1306         u8 vif_count;
1307         u8 offloading_tid;
1308         bool disable_offloading;
1309 };
1310
1311 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm,
1312                                         struct ieee80211_vif *vif,
1313                                         struct iwl_d0i3_iter_data *iter_data)
1314 {
1315         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1316         struct iwl_mvm_sta *mvmsta;
1317         u32 available_tids = 0;
1318         u8 tid;
1319
1320         if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
1321                     mvmvif->ap_sta_id == IWL_MVM_INVALID_STA))
1322                 return false;
1323
1324         mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
1325         if (!mvmsta)
1326                 return false;
1327
1328         spin_lock_bh(&mvmsta->lock);
1329         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1330                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
1331
1332                 /*
1333                  * in case of pending tx packets, don't use this tid
1334                  * for offloading in order to prevent reuse of the same
1335                  * qos seq counters.
1336                  */
1337                 if (iwl_mvm_tid_queued(mvm, tid_data))
1338                         continue;
1339
1340                 if (tid_data->state != IWL_AGG_OFF)
1341                         continue;
1342
1343                 available_tids |= BIT(tid);
1344         }
1345         spin_unlock_bh(&mvmsta->lock);
1346
1347         /*
1348          * disallow protocol offloading if we have no available tid
1349          * (with no pending frames and no active aggregation,
1350          * as we don't handle "holes" properly - the scheduler needs the
1351          * frame's seq number and TFD index to match)
1352          */
1353         if (!available_tids)
1354                 return true;
1355
1356         /* for simplicity, just use the first available tid */
1357         iter_data->offloading_tid = ffs(available_tids) - 1;
1358         return false;
1359 }
1360
1361 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
1362                                         struct ieee80211_vif *vif)
1363 {
1364         struct iwl_d0i3_iter_data *data = _data;
1365         struct iwl_mvm *mvm = data->mvm;
1366         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1367         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1368
1369         IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr);
1370         if (vif->type != NL80211_IFTYPE_STATION ||
1371             !vif->bss_conf.assoc)
1372                 return;
1373
1374         /*
1375          * in case of pending tx packets or active aggregations,
1376          * avoid offloading features in order to prevent reuse of
1377          * the same qos seq counters.
1378          */
1379         if (iwl_mvm_disallow_offloading(mvm, vif, data))
1380                 data->disable_offloading = true;
1381
1382         iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
1383         iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading,
1384                                    false, flags);
1385
1386         /*
1387          * on init/association, mvm already configures POWER_TABLE_CMD
1388          * and REPLY_MCAST_FILTER_CMD, so currently don't
1389          * reconfigure them (we might want to use different
1390          * params later on, though).
1391          */
1392         data->ap_sta_id = mvmvif->ap_sta_id;
1393         data->vif_count++;
1394
1395         /*
1396          * no new commands can be sent at this stage, so it's safe
1397          * to save the vif pointer during d0i3 entrance.
1398          */
1399         data->connected_vif = vif;
1400 }
1401
1402 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
1403                                     struct iwl_wowlan_config_cmd *cmd,
1404                                     struct iwl_d0i3_iter_data *iter_data)
1405 {
1406         struct ieee80211_sta *ap_sta;
1407         struct iwl_mvm_sta *mvm_ap_sta;
1408
1409         if (iter_data->ap_sta_id == IWL_MVM_INVALID_STA)
1410                 return;
1411
1412         rcu_read_lock();
1413
1414         ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]);
1415         if (IS_ERR_OR_NULL(ap_sta))
1416                 goto out;
1417
1418         mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
1419         cmd->is_11n_connection = ap_sta->ht_cap.ht_supported;
1420         cmd->offloading_tid = iter_data->offloading_tid;
1421         cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING |
1422                 ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON;
1423         /*
1424          * The d0i3 uCode takes care of the nonqos counters,
1425          * so configure only the qos seq ones.
1426          */
1427         iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd);
1428 out:
1429         rcu_read_unlock();
1430 }
1431
1432 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
1433 {
1434         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1435         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1436         int ret;
1437         struct iwl_d0i3_iter_data d0i3_iter_data = {
1438                 .mvm = mvm,
1439         };
1440         struct iwl_wowlan_config_cmd wowlan_config_cmd = {
1441                 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
1442                                              IWL_WOWLAN_WAKEUP_BEACON_MISS |
1443                                              IWL_WOWLAN_WAKEUP_LINK_CHANGE),
1444         };
1445         struct iwl_d3_manager_config d3_cfg_cmd = {
1446                 .min_sleep_time = cpu_to_le32(1000),
1447                 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR),
1448         };
1449
1450         IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
1451
1452         if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR))
1453                 return -EINVAL;
1454
1455         set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1456
1457         /*
1458          * iwl_mvm_ref_sync takes a reference before checking the flag.
1459          * so by checking there is no held reference we prevent a state
1460          * in which iwl_mvm_ref_sync continues successfully while we
1461          * configure the firmware to enter d0i3
1462          */
1463         if (iwl_mvm_ref_taken(mvm)) {
1464                 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n");
1465                 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1466                 wake_up(&mvm->d0i3_exit_waitq);
1467                 return 1;
1468         }
1469
1470         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1471                                                    IEEE80211_IFACE_ITER_NORMAL,
1472                                                    iwl_mvm_enter_d0i3_iterator,
1473                                                    &d0i3_iter_data);
1474         if (d0i3_iter_data.vif_count == 1) {
1475                 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
1476                 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
1477         } else {
1478                 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
1479                 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1480                 mvm->d0i3_offloading = false;
1481         }
1482
1483         iwl_mvm_pause_tcm(mvm, true);
1484         /* make sure we have no running tx while configuring the seqno */
1485         synchronize_net();
1486
1487         /* Flush the hw queues, in case something got queued during entry */
1488         /* TODO new tx api */
1489         if (iwl_mvm_has_new_tx_api(mvm)) {
1490                 WARN_ONCE(1, "d0i3: Need to implement flush TX queue\n");
1491         } else {
1492                 ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm),
1493                                             flags);
1494                 if (ret)
1495                         return ret;
1496         }
1497
1498         /* configure wowlan configuration only if needed */
1499         if (mvm->d0i3_ap_sta_id != IWL_MVM_INVALID_STA) {
1500                 /* wake on beacons only if beacon storing isn't supported */
1501                 if (!fw_has_capa(&mvm->fw->ucode_capa,
1502                                  IWL_UCODE_TLV_CAPA_BEACON_STORING))
1503                         wowlan_config_cmd.wakeup_filter |=
1504                                 cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING);
1505
1506                 iwl_mvm_wowlan_config_key_params(mvm,
1507                                                  d0i3_iter_data.connected_vif,
1508                                                  true, flags);
1509
1510                 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd,
1511                                         &d0i3_iter_data);
1512
1513                 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags,
1514                                            sizeof(wowlan_config_cmd),
1515                                            &wowlan_config_cmd);
1516                 if (ret)
1517                         return ret;
1518         }
1519
1520         return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
1521                                     flags | CMD_MAKE_TRANS_IDLE,
1522                                     sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1523 }
1524
1525 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac,
1526                                        struct ieee80211_vif *vif)
1527 {
1528         struct iwl_mvm *mvm = _data;
1529         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO;
1530
1531         IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr);
1532         if (vif->type != NL80211_IFTYPE_STATION ||
1533             !vif->bss_conf.assoc)
1534                 return;
1535
1536         iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags);
1537 }
1538
1539 struct iwl_mvm_d0i3_exit_work_iter_data {
1540         struct iwl_mvm *mvm;
1541         struct iwl_wowlan_status *status;
1542         u32 wakeup_reasons;
1543 };
1544
1545 static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac,
1546                                         struct ieee80211_vif *vif)
1547 {
1548         struct iwl_mvm_d0i3_exit_work_iter_data *data = _data;
1549         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1550         u32 reasons = data->wakeup_reasons;
1551
1552         /* consider only the relevant station interface */
1553         if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1554             data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id)
1555                 return;
1556
1557         if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)
1558                 iwl_mvm_connection_loss(data->mvm, vif, "D0i3");
1559         else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON)
1560                 ieee80211_beacon_loss(vif);
1561         else
1562                 iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status);
1563 }
1564
1565 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq)
1566 {
1567         struct ieee80211_sta *sta = NULL;
1568         struct iwl_mvm_sta *mvm_ap_sta;
1569         int i;
1570         bool wake_queues = false;
1571
1572         lockdep_assert_held(&mvm->mutex);
1573
1574         spin_lock_bh(&mvm->d0i3_tx_lock);
1575
1576         if (mvm->d0i3_ap_sta_id == IWL_MVM_INVALID_STA)
1577                 goto out;
1578
1579         IWL_DEBUG_RPM(mvm, "re-enqueue packets\n");
1580
1581         /* get the sta in order to update seq numbers and re-enqueue skbs */
1582         sta = rcu_dereference_protected(
1583                         mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id],
1584                         lockdep_is_held(&mvm->mutex));
1585
1586         if (IS_ERR_OR_NULL(sta)) {
1587                 sta = NULL;
1588                 goto out;
1589         }
1590
1591         if (mvm->d0i3_offloading && qos_seq) {
1592                 /* update qos seq numbers if offloading was enabled */
1593                 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta);
1594                 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1595                         u16 seq = le16_to_cpu(qos_seq[i]);
1596                         /* firmware stores last-used one, we store next one */
1597                         seq += 0x10;
1598                         mvm_ap_sta->tid_data[i].seq_number = seq;
1599                 }
1600         }
1601 out:
1602         /* re-enqueue (or drop) all packets */
1603         while (!skb_queue_empty(&mvm->d0i3_tx)) {
1604                 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx);
1605
1606                 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta))
1607                         ieee80211_free_txskb(mvm->hw, skb);
1608
1609                 /* if the skb_queue is not empty, we need to wake queues */
1610                 wake_queues = true;
1611         }
1612         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1613         wake_up(&mvm->d0i3_exit_waitq);
1614         mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1615         if (wake_queues)
1616                 ieee80211_wake_queues(mvm->hw);
1617
1618         spin_unlock_bh(&mvm->d0i3_tx_lock);
1619 }
1620
1621 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk)
1622 {
1623         struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work);
1624         struct iwl_mvm_d0i3_exit_work_iter_data iter_data = {
1625                 .mvm = mvm,
1626         };
1627
1628         struct iwl_wowlan_status *status;
1629         u32 wakeup_reasons = 0;
1630         __le16 *qos_seq = NULL;
1631
1632         mutex_lock(&mvm->mutex);
1633
1634         status = iwl_mvm_send_wowlan_get_status(mvm);
1635         if (IS_ERR_OR_NULL(status)) {
1636                 /* set to NULL so we don't need to check before kfree'ing */
1637                 status = NULL;
1638                 goto out;
1639         }
1640
1641         wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
1642         qos_seq = status->qos_seq_ctr;
1643
1644         IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);
1645
1646         iter_data.wakeup_reasons = wakeup_reasons;
1647         iter_data.status = status;
1648         ieee80211_iterate_active_interfaces(mvm->hw,
1649                                             IEEE80211_IFACE_ITER_NORMAL,
1650                                             iwl_mvm_d0i3_exit_work_iter,
1651                                             &iter_data);
1652 out:
1653         iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
1654
1655         IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n",
1656                        wakeup_reasons);
1657
1658         /* qos_seq might point inside resp_pkt, so free it only now */
1659         kfree(status);
1660
1661         /* the FW might have updated the regdomain */
1662         iwl_mvm_update_changed_regdom(mvm);
1663
1664         iwl_mvm_resume_tcm(mvm);
1665         iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
1666         mutex_unlock(&mvm->mutex);
1667 }
1668
1669 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
1670 {
1671         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
1672                     CMD_WAKE_UP_TRANS;
1673         int ret;
1674
1675         IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
1676
1677         if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR))
1678                 return -EINVAL;
1679
1680         mutex_lock(&mvm->d0i3_suspend_mutex);
1681         if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) {
1682                 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n");
1683                 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags);
1684                 mutex_unlock(&mvm->d0i3_suspend_mutex);
1685                 return 0;
1686         }
1687         mutex_unlock(&mvm->d0i3_suspend_mutex);
1688
1689         ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
1690         if (ret)
1691                 goto out;
1692
1693         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1694                                                    IEEE80211_IFACE_ITER_NORMAL,
1695                                                    iwl_mvm_exit_d0i3_iterator,
1696                                                    mvm);
1697 out:
1698         schedule_work(&mvm->d0i3_exit_work);
1699         return ret;
1700 }
1701
1702 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
1703 {
1704         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1705
1706         iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK);
1707         return _iwl_mvm_exit_d0i3(mvm);
1708 }
1709
1710 #define IWL_MVM_D0I3_OPS                                        \
1711         .enter_d0i3 = iwl_mvm_enter_d0i3,                       \
1712         .exit_d0i3 = iwl_mvm_exit_d0i3,
1713 #else /* CONFIG_PM */
1714 #define IWL_MVM_D0I3_OPS
1715 #endif /* CONFIG_PM */
1716
1717 #define IWL_MVM_COMMON_OPS                                      \
1718         /* these could be differentiated */                     \
1719         .async_cb = iwl_mvm_async_cb,                           \
1720         .queue_full = iwl_mvm_stop_sw_queue,                    \
1721         .queue_not_full = iwl_mvm_wake_sw_queue,                \
1722         .hw_rf_kill = iwl_mvm_set_hw_rfkill_state,              \
1723         .free_skb = iwl_mvm_free_skb,                           \
1724         .nic_error = iwl_mvm_nic_error,                         \
1725         .cmd_queue_full = iwl_mvm_cmd_queue_full,               \
1726         .nic_config = iwl_mvm_nic_config,                       \
1727         IWL_MVM_D0I3_OPS                                        \
1728         /* as we only register one, these MUST be common! */    \
1729         .start = iwl_op_mode_mvm_start,                         \
1730         .stop = iwl_op_mode_mvm_stop
1731
1732 static const struct iwl_op_mode_ops iwl_mvm_ops = {
1733         IWL_MVM_COMMON_OPS,
1734         .rx = iwl_mvm_rx,
1735 };
1736
1737 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode,
1738                               struct napi_struct *napi,
1739                               struct iwl_rx_cmd_buffer *rxb,
1740                               unsigned int queue)
1741 {
1742         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1743         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1744         u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1745
1746         if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)))
1747                 iwl_mvm_rx_frame_release(mvm, napi, rxb, queue);
1748         else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1749                                          RX_QUEUES_NOTIFICATION)))
1750                 iwl_mvm_rx_queue_notif(mvm, rxb, queue);
1751         else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1752                 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue);
1753 }
1754
1755 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = {
1756         IWL_MVM_COMMON_OPS,
1757         .rx = iwl_mvm_rx_mq,
1758         .rx_rss = iwl_mvm_rx_mq_rss,
1759 };