gpio: rcar: Fix runtime PM imbalance on error

[linux/fpc-iii.git] / drivers / net / wireless / intel / iwlwifi / mvm / ops.c

/******************************************************************************
 *
 * This file is provided under a dual BSD/GPLv2 license.  When using or
 * redistributing this file, you may do so under either license.
 *
 * GPL LICENSE SUMMARY
 *
 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
 * Copyright(c) 2018 - 2019 Intel Corporation
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * The full GNU General Public License is included in this distribution
 * in the file called COPYING.
 *
 * Contact Information:
 *  Intel Linux Wireless <linuxwifi@intel.com>
 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
 * BSD LICENSE
 *
 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
 * Copyright(c) 2018 - 2019 Intel Corporation
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *  * Neither the name Intel Corporation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *****************************************************************************/
#include <linux/module.h>
#include <linux/vmalloc.h>
#include <net/mac80211.h>

#include "fw/notif-wait.h"
#include "iwl-trans.h"
#include "iwl-op-mode.h"
#include "fw/img.h"
#include "iwl-debug.h"
#include "iwl-drv.h"
#include "iwl-modparams.h"
#include "mvm.h"
#include "iwl-phy-db.h"
#include "iwl-eeprom-parse.h"
#include "iwl-csr.h"
#include "iwl-io.h"
#include "iwl-prph.h"
#include "rs.h"
#include "fw/api/scan.h"
#include "time-event.h"
#include "fw-api.h"
#include "fw/acpi.h"

#define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux"
MODULE_DESCRIPTION(DRV_DESCRIPTION);
MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
MODULE_LICENSE("GPL");

static const struct iwl_op_mode_ops iwl_mvm_ops;
static const struct iwl_op_mode_ops iwl_mvm_ops_mq;

struct iwl_mvm_mod_params iwlmvm_mod_params = {
        .power_scheme = IWL_POWER_SCHEME_BPS,
        .tfd_q_hang_detect = true
        /* rest of fields are 0 by default */
};

module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, 0444);
MODULE_PARM_DESC(init_dbg,
                 "set to true to debug an ASSERT in INIT fw (default: false");
module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, 0444);
MODULE_PARM_DESC(power_scheme,
                 "power management scheme: 1-active, 2-balanced, 3-low power, default: 2");
module_param_named(tfd_q_hang_detect, iwlmvm_mod_params.tfd_q_hang_detect,
                   bool, 0444);
MODULE_PARM_DESC(tfd_q_hang_detect,
                 "TFD queues hang detection (default: true");

/*
 * module init and exit functions
 */
static int __init iwl_mvm_init(void)
{
        int ret;

        ret = iwl_mvm_rate_control_register();
        if (ret) {
                pr_err("Unable to register rate control algorithm: %d\n", ret);
                return ret;
        }

        ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops);
        if (ret)
                pr_err("Unable to register MVM op_mode: %d\n", ret);

        return ret;
}
module_init(iwl_mvm_init);

static void __exit iwl_mvm_exit(void)
{
        iwl_opmode_deregister("iwlmvm");
        iwl_mvm_rate_control_unregister();
}
module_exit(iwl_mvm_exit);

static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode)
{
        struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
        u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash;
        u32 reg_val = 0;
        u32 phy_config = iwl_mvm_get_phy_config(mvm);

        radio_cfg_type = (phy_config & FW_PHY_CFG_RADIO_TYPE) >>
                         FW_PHY_CFG_RADIO_TYPE_POS;
        radio_cfg_step = (phy_config & FW_PHY_CFG_RADIO_STEP) >>
                         FW_PHY_CFG_RADIO_STEP_POS;
        radio_cfg_dash = (phy_config & FW_PHY_CFG_RADIO_DASH) >>
                         FW_PHY_CFG_RADIO_DASH_POS;

        /* SKU control */
        reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) <<
                                CSR_HW_IF_CONFIG_REG_POS_MAC_STEP;
        reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) <<
                                CSR_HW_IF_CONFIG_REG_POS_MAC_DASH;

        /* radio configuration */
        reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE;
        reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP;
        reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;

        WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) &
                 ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE);

        /*
         * TODO: Bits 7-8 of CSR in 8000 HW family and higher set the ADC
         * sampling, and shouldn't be set to any non-zero value.
         * The same is supposed to be true of the other HW, but unsetting
         * them (such as the 7260) causes automatic tests to fail on seemingly
         * unrelated errors. Need to further investigate this, but for now
         * we'll separate cases.
         */
        if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_8000)
                reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI;

        if (iwl_fw_dbg_is_d3_debug_enabled(&mvm->fwrt))
                reg_val |= CSR_HW_IF_CONFIG_REG_D3_DEBUG;

        iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG,
                                CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
                                CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP |
                                CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
                                CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
                                CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH |
                                CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
                                CSR_HW_IF_CONFIG_REG_BIT_MAC_SI   |
                                CSR_HW_IF_CONFIG_REG_D3_DEBUG,
                                reg_val);

        IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type,
                       radio_cfg_step, radio_cfg_dash);

        /*
         * W/A : NIC is stuck in a reset state after Early PCIe power off
         * (PCIe power is lost before PERST# is asserted), causing ME FW
         * to lose ownership and not being able to obtain it back.
         */
        if (!mvm->trans->cfg->apmg_not_supported)
                iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG,
                                       APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
                                       ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
}

/**
 * enum iwl_rx_handler_context context for Rx handler
 * @RX_HANDLER_SYNC : this means that it will be called in the Rx path
 *      which can't acquire mvm->mutex.
 * @RX_HANDLER_ASYNC_LOCKED : If the handler needs to hold mvm->mutex
 *      (and only in this case!), it should be set as ASYNC. In that case,
 *      it will be called from a worker with mvm->mutex held.
 * @RX_HANDLER_ASYNC_UNLOCKED : in case the handler needs to lock the
 *      mutex itself, it will be called from a worker without mvm->mutex held.
 */
enum iwl_rx_handler_context {
        RX_HANDLER_SYNC,
        RX_HANDLER_ASYNC_LOCKED,
        RX_HANDLER_ASYNC_UNLOCKED,
};

/**
 * struct iwl_rx_handlers handler for FW notification
 * @cmd_id: command id
 * @context: see &iwl_rx_handler_context
 * @fn: the function is called when notification is received
 */
struct iwl_rx_handlers {
        u16 cmd_id;
        enum iwl_rx_handler_context context;
        void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
};

#define RX_HANDLER(_cmd_id, _fn, _context)      \
        { .cmd_id = _cmd_id, .fn = _fn, .context = _context }
#define RX_HANDLER_GRP(_grp, _cmd, _fn, _context)       \
        { .cmd_id = WIDE_ID(_grp, _cmd), .fn = _fn, .context = _context }

/*
 * Handlers for fw notifications
 * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME
 * This list should be in order of frequency for performance purposes.
 *
 * The handler can be one from three contexts, see &iwl_rx_handler_context
 */
static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
        RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, RX_HANDLER_SYNC),
        RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, RX_HANDLER_SYNC),

        RX_HANDLER_GRP(DATA_PATH_GROUP, TLC_MNG_UPDATE_NOTIF,
                       iwl_mvm_tlc_update_notif, RX_HANDLER_SYNC),

        RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif,
                   RX_HANDLER_ASYNC_LOCKED),
        RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif,
                   RX_HANDLER_ASYNC_LOCKED),
        RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics,
                   RX_HANDLER_ASYNC_LOCKED),

        RX_HANDLER(BA_WINDOW_STATUS_NOTIFICATION_ID,
                   iwl_mvm_window_status_notif, RX_HANDLER_SYNC),

        RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif,
                   RX_HANDLER_SYNC),
        RX_HANDLER_GRP(MAC_CONF_GROUP, SESSION_PROTECTION_NOTIF,
                       iwl_mvm_rx_session_protect_notif, RX_HANDLER_SYNC),
        RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc,
                   RX_HANDLER_ASYNC_LOCKED),

        RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, RX_HANDLER_SYNC),

        RX_HANDLER(SCAN_ITERATION_COMPLETE,
                   iwl_mvm_rx_lmac_scan_iter_complete_notif, RX_HANDLER_SYNC),
        RX_HANDLER(SCAN_OFFLOAD_COMPLETE,
                   iwl_mvm_rx_lmac_scan_complete_notif,
                   RX_HANDLER_ASYNC_LOCKED),
        RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_match_found,
                   RX_HANDLER_SYNC),
        RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif,
                   RX_HANDLER_ASYNC_LOCKED),
        RX_HANDLER(SCAN_ITERATION_COMPLETE_UMAC,
                   iwl_mvm_rx_umac_scan_iter_complete_notif, RX_HANDLER_SYNC),

        RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif,
                   RX_HANDLER_SYNC),

        RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
                   RX_HANDLER_SYNC),

        RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, RX_HANDLER_SYNC),
        RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION,
                   iwl_mvm_power_uapsd_misbehaving_ap_notif, RX_HANDLER_SYNC),
        RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif,
                   RX_HANDLER_ASYNC_LOCKED),
        RX_HANDLER_GRP(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE,
                       iwl_mvm_temp_notif, RX_HANDLER_ASYNC_UNLOCKED),
        RX_HANDLER_GRP(PHY_OPS_GROUP, CT_KILL_NOTIFICATION,
                       iwl_mvm_ct_kill_notif, RX_HANDLER_SYNC),

        RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif,
                   RX_HANDLER_ASYNC_LOCKED),
        RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif,
                   RX_HANDLER_SYNC),
        RX_HANDLER_GRP(LOCATION_GROUP, TOF_RESPONDER_STATS,
                       iwl_mvm_ftm_responder_stats, RX_HANDLER_ASYNC_LOCKED),

        RX_HANDLER_GRP(LOCATION_GROUP, TOF_RANGE_RESPONSE_NOTIF,
                       iwl_mvm_ftm_range_resp, RX_HANDLER_ASYNC_LOCKED),
        RX_HANDLER_GRP(LOCATION_GROUP, TOF_LC_NOTIF,
                       iwl_mvm_ftm_lc_notif, RX_HANDLER_ASYNC_LOCKED),

        RX_HANDLER_GRP(DEBUG_GROUP, MFU_ASSERT_DUMP_NTF,
                       iwl_mvm_mfu_assert_dump_notif, RX_HANDLER_SYNC),
        RX_HANDLER_GRP(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF,
                       iwl_mvm_rx_stored_beacon_notif, RX_HANDLER_SYNC),
        RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF,
                       iwl_mvm_mu_mimo_grp_notif, RX_HANDLER_SYNC),
        RX_HANDLER_GRP(DATA_PATH_GROUP, STA_PM_NOTIF,
                       iwl_mvm_sta_pm_notif, RX_HANDLER_SYNC),
};
#undef RX_HANDLER
#undef RX_HANDLER_GRP

/* Please keep this array *SORTED* by hex value.
 * Access is done through binary search
 */
static const struct iwl_hcmd_names iwl_mvm_legacy_names[] = {
        HCMD_NAME(MVM_ALIVE),
        HCMD_NAME(REPLY_ERROR),
        HCMD_NAME(ECHO_CMD),
        HCMD_NAME(INIT_COMPLETE_NOTIF),
        HCMD_NAME(PHY_CONTEXT_CMD),
        HCMD_NAME(DBG_CFG),
        HCMD_NAME(SCAN_CFG_CMD),
        HCMD_NAME(SCAN_REQ_UMAC),
        HCMD_NAME(SCAN_ABORT_UMAC),
        HCMD_NAME(SCAN_COMPLETE_UMAC),
        HCMD_NAME(BA_WINDOW_STATUS_NOTIFICATION_ID),
        HCMD_NAME(ADD_STA_KEY),
        HCMD_NAME(ADD_STA),
        HCMD_NAME(REMOVE_STA),
        HCMD_NAME(FW_GET_ITEM_CMD),
        HCMD_NAME(TX_CMD),
        HCMD_NAME(SCD_QUEUE_CFG),
        HCMD_NAME(TXPATH_FLUSH),
        HCMD_NAME(MGMT_MCAST_KEY),
        HCMD_NAME(WEP_KEY),
        HCMD_NAME(SHARED_MEM_CFG),
        HCMD_NAME(TDLS_CHANNEL_SWITCH_CMD),
        HCMD_NAME(MAC_CONTEXT_CMD),
        HCMD_NAME(TIME_EVENT_CMD),
        HCMD_NAME(TIME_EVENT_NOTIFICATION),
        HCMD_NAME(BINDING_CONTEXT_CMD),
        HCMD_NAME(TIME_QUOTA_CMD),
        HCMD_NAME(NON_QOS_TX_COUNTER_CMD),
        HCMD_NAME(LEDS_CMD),
        HCMD_NAME(LQ_CMD),
        HCMD_NAME(FW_PAGING_BLOCK_CMD),
        HCMD_NAME(SCAN_OFFLOAD_REQUEST_CMD),
        HCMD_NAME(SCAN_OFFLOAD_ABORT_CMD),
        HCMD_NAME(HOT_SPOT_CMD),
        HCMD_NAME(SCAN_OFFLOAD_PROFILES_QUERY_CMD),
        HCMD_NAME(BT_COEX_UPDATE_REDUCED_TXP),
        HCMD_NAME(BT_COEX_CI),
        HCMD_NAME(PHY_CONFIGURATION_CMD),
        HCMD_NAME(CALIB_RES_NOTIF_PHY_DB),
        HCMD_NAME(PHY_DB_CMD),
        HCMD_NAME(SCAN_OFFLOAD_COMPLETE),
        HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
        HCMD_NAME(POWER_TABLE_CMD),
        HCMD_NAME(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION),
        HCMD_NAME(REPLY_THERMAL_MNG_BACKOFF),
        HCMD_NAME(DC2DC_CONFIG_CMD),
        HCMD_NAME(NVM_ACCESS_CMD),
        HCMD_NAME(BEACON_NOTIFICATION),
        HCMD_NAME(BEACON_TEMPLATE_CMD),
        HCMD_NAME(TX_ANT_CONFIGURATION_CMD),
        HCMD_NAME(BT_CONFIG),
        HCMD_NAME(STATISTICS_CMD),
        HCMD_NAME(STATISTICS_NOTIFICATION),
        HCMD_NAME(EOSP_NOTIFICATION),
        HCMD_NAME(REDUCE_TX_POWER_CMD),
        HCMD_NAME(CARD_STATE_NOTIFICATION),
        HCMD_NAME(MISSED_BEACONS_NOTIFICATION),
        HCMD_NAME(TDLS_CONFIG_CMD),
        HCMD_NAME(MAC_PM_POWER_TABLE),
        HCMD_NAME(TDLS_CHANNEL_SWITCH_NOTIFICATION),
        HCMD_NAME(MFUART_LOAD_NOTIFICATION),
        HCMD_NAME(RSS_CONFIG_CMD),
        HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC),
        HCMD_NAME(REPLY_RX_PHY_CMD),
        HCMD_NAME(REPLY_RX_MPDU_CMD),
        HCMD_NAME(BAR_FRAME_RELEASE),
        HCMD_NAME(FRAME_RELEASE),
        HCMD_NAME(BA_NOTIF),
        HCMD_NAME(MCC_UPDATE_CMD),
        HCMD_NAME(MCC_CHUB_UPDATE_CMD),
        HCMD_NAME(MARKER_CMD),
        HCMD_NAME(BT_PROFILE_NOTIFICATION),
        HCMD_NAME(BCAST_FILTER_CMD),
        HCMD_NAME(MCAST_FILTER_CMD),
        HCMD_NAME(REPLY_SF_CFG_CMD),
        HCMD_NAME(REPLY_BEACON_FILTERING_CMD),
        HCMD_NAME(D3_CONFIG_CMD),
        HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD),
        HCMD_NAME(OFFLOADS_QUERY_CMD),
        HCMD_NAME(REMOTE_WAKE_CONFIG_CMD),
        HCMD_NAME(MATCH_FOUND_NOTIFICATION),
        HCMD_NAME(DTS_MEASUREMENT_NOTIFICATION),
        HCMD_NAME(WOWLAN_PATTERNS),
        HCMD_NAME(WOWLAN_CONFIGURATION),
        HCMD_NAME(WOWLAN_TSC_RSC_PARAM),
        HCMD_NAME(WOWLAN_TKIP_PARAM),
        HCMD_NAME(WOWLAN_KEK_KCK_MATERIAL),
        HCMD_NAME(WOWLAN_GET_STATUSES),
        HCMD_NAME(SCAN_ITERATION_COMPLETE),
        HCMD_NAME(D0I3_END_CMD),
        HCMD_NAME(LTR_CONFIG),
        HCMD_NAME(LDBG_CONFIG_CMD),
};

/* Please keep this array *SORTED* by hex value.
 * Access is done through binary search
 */
static const struct iwl_hcmd_names iwl_mvm_system_names[] = {
        HCMD_NAME(SHARED_MEM_CFG_CMD),
        HCMD_NAME(INIT_EXTENDED_CFG_CMD),
        HCMD_NAME(FW_ERROR_RECOVERY_CMD),
};

/* Please keep this array *SORTED* by hex value.
 * Access is done through binary search
 */
static const struct iwl_hcmd_names iwl_mvm_mac_conf_names[] = {
        HCMD_NAME(CHANNEL_SWITCH_TIME_EVENT_CMD),
        HCMD_NAME(SESSION_PROTECTION_CMD),
        HCMD_NAME(SESSION_PROTECTION_NOTIF),
        HCMD_NAME(CHANNEL_SWITCH_NOA_NOTIF),
};

/* Please keep this array *SORTED* by hex value.
 * Access is done through binary search
 */
static const struct iwl_hcmd_names iwl_mvm_phy_names[] = {
        HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE),
        HCMD_NAME(CTDP_CONFIG_CMD),
        HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD),
        HCMD_NAME(GEO_TX_POWER_LIMIT),
        HCMD_NAME(CT_KILL_NOTIFICATION),
        HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE),
};

/* Please keep this array *SORTED* by hex value.
 * Access is done through binary search
 */
static const struct iwl_hcmd_names iwl_mvm_data_path_names[] = {
        HCMD_NAME(DQA_ENABLE_CMD),
        HCMD_NAME(UPDATE_MU_GROUPS_CMD),
        HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD),
        HCMD_NAME(STA_HE_CTXT_CMD),
        HCMD_NAME(RFH_QUEUE_CONFIG_CMD),
        HCMD_NAME(TLC_MNG_CONFIG_CMD),
        HCMD_NAME(CHEST_COLLECTOR_FILTER_CONFIG_CMD),
        HCMD_NAME(STA_PM_NOTIF),
        HCMD_NAME(MU_GROUP_MGMT_NOTIF),
        HCMD_NAME(RX_QUEUES_NOTIFICATION),
};

/* Please keep this array *SORTED* by hex value.
 * Access is done through binary search
 */
static const struct iwl_hcmd_names iwl_mvm_debug_names[] = {
        HCMD_NAME(DBGC_SUSPEND_RESUME),
        HCMD_NAME(BUFFER_ALLOCATION),
        HCMD_NAME(MFU_ASSERT_DUMP_NTF),
};

/* Please keep this array *SORTED* by hex value.
 * Access is done through binary search
 */
static const struct iwl_hcmd_names iwl_mvm_location_names[] = {
        HCMD_NAME(TOF_RANGE_REQ_CMD),
        HCMD_NAME(TOF_CONFIG_CMD),
        HCMD_NAME(TOF_RANGE_ABORT_CMD),
        HCMD_NAME(TOF_RANGE_REQ_EXT_CMD),
        HCMD_NAME(TOF_RESPONDER_CONFIG_CMD),
        HCMD_NAME(TOF_RESPONDER_DYN_CONFIG_CMD),
        HCMD_NAME(TOF_LC_NOTIF),
        HCMD_NAME(TOF_RESPONDER_STATS),
        HCMD_NAME(TOF_MCSI_DEBUG_NOTIF),
        HCMD_NAME(TOF_RANGE_RESPONSE_NOTIF),
};

/* Please keep this array *SORTED* by hex value.
 * Access is done through binary search
 */
static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = {
        HCMD_NAME(STORED_BEACON_NTF),
};

/* Please keep this array *SORTED* by hex value.
 * Access is done through binary search
 */
static const struct iwl_hcmd_names iwl_mvm_regulatory_and_nvm_names[] = {
        HCMD_NAME(NVM_ACCESS_COMPLETE),
        HCMD_NAME(NVM_GET_INFO),
};

static const struct iwl_hcmd_arr iwl_mvm_groups[] = {
        [LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
        [LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
        [SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names),
        [MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names),
        [PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names),
        [DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names),
        [LOCATION_GROUP] = HCMD_ARR(iwl_mvm_location_names),
        [PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names),
        [REGULATORY_AND_NVM_GROUP] =
                HCMD_ARR(iwl_mvm_regulatory_and_nvm_names),
};

/* this forward declaration can avoid to export the function */
static void iwl_mvm_async_handlers_wk(struct work_struct *wk);

static u32 iwl_mvm_min_backoff(struct iwl_mvm *mvm)
{
        const struct iwl_pwr_tx_backoff *backoff = mvm->cfg->pwr_tx_backoffs;
        u64 dflt_pwr_limit;

        if (!backoff)
                return 0;

        dflt_pwr_limit = iwl_acpi_get_pwr_limit(mvm->dev);

        while (backoff->pwr) {
                if (dflt_pwr_limit >= backoff->pwr)
                        return backoff->backoff;

                backoff++;
        }

        return 0;
}

static void iwl_mvm_tx_unblock_dwork(struct work_struct *work)
{
        struct iwl_mvm *mvm =
                container_of(work, struct iwl_mvm, cs_tx_unblock_dwork.work);
        struct ieee80211_vif *tx_blocked_vif;
        struct iwl_mvm_vif *mvmvif;

        mutex_lock(&mvm->mutex);

        tx_blocked_vif =
                rcu_dereference_protected(mvm->csa_tx_blocked_vif,
                                          lockdep_is_held(&mvm->mutex));

        if (!tx_blocked_vif)
                goto unlock;

        mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif);
        iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
        RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
unlock:
        mutex_unlock(&mvm->mutex);
}

static int iwl_mvm_fwrt_dump_start(void *ctx)
{
        struct iwl_mvm *mvm = ctx;

        mutex_lock(&mvm->mutex);

        return 0;
}

static void iwl_mvm_fwrt_dump_end(void *ctx)
{
        struct iwl_mvm *mvm = ctx;

        mutex_unlock(&mvm->mutex);
}

static bool iwl_mvm_fwrt_fw_running(void *ctx)
{
        return iwl_mvm_firmware_running(ctx);
}

static int iwl_mvm_fwrt_send_hcmd(void *ctx, struct iwl_host_cmd *host_cmd)
{
        struct iwl_mvm *mvm = (struct iwl_mvm *)ctx;
        int ret;

        mutex_lock(&mvm->mutex);
        ret = iwl_mvm_send_cmd(mvm, host_cmd);
        mutex_unlock(&mvm->mutex);

        return ret;
}

static bool iwl_mvm_d3_debug_enable(void *ctx)
{
        return IWL_MVM_D3_DEBUG;
}

static const struct iwl_fw_runtime_ops iwl_mvm_fwrt_ops = {
        .dump_start = iwl_mvm_fwrt_dump_start,
        .dump_end = iwl_mvm_fwrt_dump_end,
        .fw_running = iwl_mvm_fwrt_fw_running,
        .send_hcmd = iwl_mvm_fwrt_send_hcmd,
        .d3_debug_enable = iwl_mvm_d3_debug_enable,
};

static u8 iwl_mvm_lookup_notif_ver(struct iwl_mvm *mvm, u8 grp, u8 cmd, u8 def)
{
        const struct iwl_fw_cmd_version *entry;
        unsigned int i;

        if (!mvm->fw->ucode_capa.cmd_versions ||
            !mvm->fw->ucode_capa.n_cmd_versions)
                return def;

        entry = mvm->fw->ucode_capa.cmd_versions;
        for (i = 0; i < mvm->fw->ucode_capa.n_cmd_versions; i++, entry++) {
                if (entry->group == grp && entry->cmd == cmd) {
                        if (entry->notif_ver == IWL_FW_CMD_VER_UNKNOWN)
                                return def;
                        return entry->notif_ver;
                }
        }

        return def;
}

static struct iwl_op_mode *
iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
                      const struct iwl_fw *fw, struct dentry *dbgfs_dir)
{
        struct ieee80211_hw *hw;
        struct iwl_op_mode *op_mode;
        struct iwl_mvm *mvm;
        struct iwl_trans_config trans_cfg = {};
        static const u8 no_reclaim_cmds[] = {
                TX_CMD,
        };
        int err, scan_size;
        u32 min_backoff;
        enum iwl_amsdu_size rb_size_default;

        /*
         * We use IWL_MVM_STATION_COUNT to check the validity of the station
         * index all over the driver - check that its value corresponds to the
         * array size.
         */
        BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT);

        /********************************
         * 1. Allocating and configuring HW data
         ********************************/
        hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
                                sizeof(struct iwl_mvm),
                                &iwl_mvm_hw_ops);
        if (!hw)
                return NULL;

        hw->max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;

        if (cfg->max_tx_agg_size)
                hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size;
        else
                hw->max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;

        op_mode = hw->priv;

        mvm = IWL_OP_MODE_GET_MVM(op_mode);
        mvm->dev = trans->dev;
        mvm->trans = trans;
        mvm->cfg = cfg;
        mvm->fw = fw;
        mvm->hw = hw;

        iwl_fw_runtime_init(&mvm->fwrt, trans, fw, &iwl_mvm_fwrt_ops, mvm,
                            dbgfs_dir);

        mvm->init_status = 0;

        if (iwl_mvm_has_new_rx_api(mvm)) {
                op_mode->ops = &iwl_mvm_ops_mq;
                trans->rx_mpdu_cmd_hdr_size =
                        (trans->trans_cfg->device_family >=
                         IWL_DEVICE_FAMILY_AX210) ?
                        sizeof(struct iwl_rx_mpdu_desc) :
                        IWL_RX_DESC_SIZE_V1;
        } else {
                op_mode->ops = &iwl_mvm_ops;
                trans->rx_mpdu_cmd_hdr_size =
                        sizeof(struct iwl_rx_mpdu_res_start);

                if (WARN_ON(trans->num_rx_queues > 1))
                        goto out_free;
        }

        mvm->fw_restart = iwlwifi_mod_params.fw_restart ? -1 : 0;

        mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE;
        mvm->snif_queue = IWL_MVM_DQA_INJECT_MONITOR_QUEUE;
        mvm->probe_queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE;
        mvm->p2p_dev_queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE;

        mvm->sf_state = SF_UNINIT;
        if (iwl_mvm_has_unified_ucode(mvm))
                iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_REGULAR);
        else
                iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_INIT);
        mvm->drop_bcn_ap_mode = true;

        mutex_init(&mvm->mutex);
        spin_lock_init(&mvm->async_handlers_lock);
        INIT_LIST_HEAD(&mvm->time_event_list);
        INIT_LIST_HEAD(&mvm->aux_roc_te_list);
        INIT_LIST_HEAD(&mvm->async_handlers_list);
        spin_lock_init(&mvm->time_event_lock);
        INIT_LIST_HEAD(&mvm->ftm_initiator.loc_list);

        INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
        INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
        INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
        INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk);
        INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk);
        INIT_LIST_HEAD(&mvm->add_stream_txqs);

        init_waitqueue_head(&mvm->rx_sync_waitq);

        atomic_set(&mvm->queue_sync_counter, 0);

        SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);

        spin_lock_init(&mvm->tcm.lock);
        INIT_DELAYED_WORK(&mvm->tcm.work, iwl_mvm_tcm_work);
        mvm->tcm.ts = jiffies;
        mvm->tcm.ll_ts = jiffies;
        mvm->tcm.uapsd_nonagg_ts = jiffies;

        INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork);

        mvm->cmd_ver.d0i3_resp =
                iwl_mvm_lookup_notif_ver(mvm, LEGACY_GROUP, D0I3_END_CMD, 0);
        /* we only support version 1 */
        if (WARN_ON_ONCE(mvm->cmd_ver.d0i3_resp > 1))
                goto out_free;

        /*
         * Populate the state variables that the transport layer needs
         * to know about.
         */
        trans_cfg.op_mode = op_mode;
        trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
        trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);

        if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210)
                rb_size_default = IWL_AMSDU_2K;
        else
                rb_size_default = IWL_AMSDU_4K;

        switch (iwlwifi_mod_params.amsdu_size) {
        case IWL_AMSDU_DEF:
                trans_cfg.rx_buf_size = rb_size_default;
                break;
        case IWL_AMSDU_4K:
                trans_cfg.rx_buf_size = IWL_AMSDU_4K;
                break;
        case IWL_AMSDU_8K:
                trans_cfg.rx_buf_size = IWL_AMSDU_8K;
                break;
        case IWL_AMSDU_12K:
                trans_cfg.rx_buf_size = IWL_AMSDU_12K;
                break;
        default:
                pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME,
                       iwlwifi_mod_params.amsdu_size);
                trans_cfg.rx_buf_size = rb_size_default;
        }

        trans->wide_cmd_header = true;
        trans_cfg.bc_table_dword =
                mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_AX210;

        trans_cfg.command_groups = iwl_mvm_groups;
        trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups);

        trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE;
        trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
        trans_cfg.scd_set_active = true;

        trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info,
                                          driver_data[2]);

        trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD;

        /* Set a short watchdog for the command queue */
        trans_cfg.cmd_q_wdg_timeout =
                iwl_mvm_get_wd_timeout(mvm, NULL, false, true);

        snprintf(mvm->hw->wiphy->fw_version,
                 sizeof(mvm->hw->wiphy->fw_version),
                 "%s", fw->fw_version);

        /* Configure transport layer */
        iwl_trans_configure(mvm->trans, &trans_cfg);

        trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
        trans->dbg.dest_tlv = mvm->fw->dbg.dest_tlv;
        trans->dbg.n_dest_reg = mvm->fw->dbg.n_dest_reg;
        memcpy(trans->dbg.conf_tlv, mvm->fw->dbg.conf_tlv,
               sizeof(trans->dbg.conf_tlv));
        trans->dbg.trigger_tlv = mvm->fw->dbg.trigger_tlv;

        trans->iml = mvm->fw->iml;
        trans->iml_len = mvm->fw->iml_len;

        /* set up notification wait support */
        iwl_notification_wait_init(&mvm->notif_wait);

        /* Init phy db */
        mvm->phy_db = iwl_phy_db_init(trans);
        if (!mvm->phy_db) {
                IWL_ERR(mvm, "Cannot init phy_db\n");
                goto out_free;
        }

        IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
                 mvm->trans->name, mvm->trans->hw_rev);

        if (iwlwifi_mod_params.nvm_file)
                mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
        else
                IWL_DEBUG_EEPROM(mvm->trans->dev,
                                 "working without external nvm file\n");

        err = iwl_trans_start_hw(mvm->trans);
        if (err)
                goto out_free;

        mutex_lock(&mvm->mutex);
        err = iwl_run_init_mvm_ucode(mvm, true);
        if (err && err != -ERFKILL)
                iwl_fw_dbg_error_collect(&mvm->fwrt, FW_DBG_TRIGGER_DRIVER);
        if (!iwlmvm_mod_params.init_dbg || !err)
                iwl_mvm_stop_device(mvm);
        mutex_unlock(&mvm->mutex);
        if (err < 0) {
                IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
                goto out_free;
        }

        scan_size = iwl_mvm_scan_size(mvm);

        mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
        if (!mvm->scan_cmd)
                goto out_free;

        /* Set EBS as successful as long as not stated otherwise by the FW. */
        mvm->last_ebs_successful = true;

        err = iwl_mvm_mac_setup_register(mvm);
        if (err)
                goto out_free;
        mvm->hw_registered = true;

        min_backoff = iwl_mvm_min_backoff(mvm);
        iwl_mvm_thermal_initialize(mvm, min_backoff);

        iwl_mvm_dbgfs_register(mvm, dbgfs_dir);

        if (!iwl_mvm_has_new_rx_stats_api(mvm))
                memset(&mvm->rx_stats_v3, 0,
                       sizeof(struct mvm_statistics_rx_v3));
        else
                memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));

        iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx);

        return op_mode;

 out_free:
        iwl_fw_flush_dumps(&mvm->fwrt);
        iwl_fw_runtime_free(&mvm->fwrt);

        if (iwlmvm_mod_params.init_dbg)
                return op_mode;
        iwl_phy_db_free(mvm->phy_db);
        kfree(mvm->scan_cmd);
        iwl_trans_op_mode_leave(trans);

        ieee80211_free_hw(mvm->hw);
        return NULL;
}

static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
{
        struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
        int i;

        iwl_mvm_leds_exit(mvm);

        iwl_mvm_thermal_exit(mvm);

        ieee80211_unregister_hw(mvm->hw);

        kfree(mvm->scan_cmd);
        kfree(mvm->mcast_filter_cmd);
        mvm->mcast_filter_cmd = NULL;

        kfree(mvm->error_recovery_buf);
        mvm->error_recovery_buf = NULL;

        iwl_trans_op_mode_leave(mvm->trans);

        iwl_phy_db_free(mvm->phy_db);
        mvm->phy_db = NULL;

        kfree(mvm->nvm_data);
        for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
                kfree(mvm->nvm_sections[i].data);

        cancel_delayed_work_sync(&mvm->tcm.work);

        iwl_fw_runtime_free(&mvm->fwrt);
        mutex_destroy(&mvm->mutex);

        ieee80211_free_hw(mvm->hw);
}

struct iwl_async_handler_entry {
        struct list_head list;
        struct iwl_rx_cmd_buffer rxb;
        enum iwl_rx_handler_context context;
        void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
};

void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
{
        struct iwl_async_handler_entry *entry, *tmp;

        spin_lock_bh(&mvm->async_handlers_lock);
        list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
                iwl_free_rxb(&entry->rxb);
                list_del(&entry->list);
                kfree(entry);
        }
        spin_unlock_bh(&mvm->async_handlers_lock);
}

static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
{
        struct iwl_mvm *mvm =
                container_of(wk, struct iwl_mvm, async_handlers_wk);
        struct iwl_async_handler_entry *entry, *tmp;
        LIST_HEAD(local_list);

        /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */

        /*
         * Sync with Rx path with a lock. Remove all the entries from this list,
         * add them to a local one (lock free), and then handle them.
         */
        spin_lock_bh(&mvm->async_handlers_lock);
        list_splice_init(&mvm->async_handlers_list, &local_list);
        spin_unlock_bh(&mvm->async_handlers_lock);

        list_for_each_entry_safe(entry, tmp, &local_list, list) {
                if (entry->context == RX_HANDLER_ASYNC_LOCKED)
                        mutex_lock(&mvm->mutex);
                entry->fn(mvm, &entry->rxb);
                iwl_free_rxb(&entry->rxb);
                list_del(&entry->list);
                if (entry->context == RX_HANDLER_ASYNC_LOCKED)
                        mutex_unlock(&mvm->mutex);
                kfree(entry);
        }
}

static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm,
                                            struct iwl_rx_packet *pkt)
{
        struct iwl_fw_dbg_trigger_tlv *trig;
        struct iwl_fw_dbg_trigger_cmd *cmds_trig;
        int i;

        trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, NULL,
                                     FW_DBG_TRIGGER_FW_NOTIF);
        if (!trig)
                return;

        cmds_trig = (void *)trig->data;

        for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) {
                /* don't collect on CMD 0 */
                if (!cmds_trig->cmds[i].cmd_id)
                        break;

                if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
                    cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
                        continue;

                iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
                                        "CMD 0x%02x.%02x received",
                                        pkt->hdr.group_id, pkt->hdr.cmd);
                break;
        }
}

static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
                              struct iwl_rx_cmd_buffer *rxb,
                              struct iwl_rx_packet *pkt)
{
        int i;
        union iwl_dbg_tlv_tp_data tp_data = { .fw_pkt = pkt };

        iwl_dbg_tlv_time_point(&mvm->fwrt,
                               IWL_FW_INI_TIME_POINT_FW_RSP_OR_NOTIF, &tp_data);
        iwl_mvm_rx_check_trigger(mvm, pkt);

        /*
         * Do the notification wait before RX handlers so
         * even if the RX handler consumes the RXB we have
         * access to it in the notification wait entry.
         */
        iwl_notification_wait_notify(&mvm->notif_wait, pkt);

        for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
                const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
                struct iwl_async_handler_entry *entry;

                if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
                        continue;

                if (rx_h->context == RX_HANDLER_SYNC) {
                        rx_h->fn(mvm, rxb);
                        return;
                }

                entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
                /* we can't do much... */
                if (!entry)
                        return;

                entry->rxb._page = rxb_steal_page(rxb);
                entry->rxb._offset = rxb->_offset;
                entry->rxb._rx_page_order = rxb->_rx_page_order;
                entry->fn = rx_h->fn;
                entry->context = rx_h->context;
                spin_lock(&mvm->async_handlers_lock);
                list_add_tail(&entry->list, &mvm->async_handlers_list);
                spin_unlock(&mvm->async_handlers_lock);
                schedule_work(&mvm->async_handlers_wk);
                break;
        }
}

static void iwl_mvm_rx(struct iwl_op_mode *op_mode,
                       struct napi_struct *napi,
                       struct iwl_rx_cmd_buffer *rxb)
{
        struct iwl_rx_packet *pkt = rxb_addr(rxb);
        struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
        u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);

        if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
                iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
        else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD))
                iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
        else
                iwl_mvm_rx_common(mvm, rxb, pkt);
}

static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode,
                          struct napi_struct *napi,
                          struct iwl_rx_cmd_buffer *rxb)
{
        struct iwl_rx_packet *pkt = rxb_addr(rxb);
        struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
        u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);

        if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
                iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0);
        else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
                                         RX_QUEUES_NOTIFICATION)))
                iwl_mvm_rx_queue_notif(mvm, napi, rxb, 0);
        else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))
                iwl_mvm_rx_frame_release(mvm, napi, rxb, 0);
        else if (cmd == WIDE_ID(LEGACY_GROUP, BAR_FRAME_RELEASE))
                iwl_mvm_rx_bar_frame_release(mvm, napi, rxb, 0);
        else if (cmd == WIDE_ID(DATA_PATH_GROUP, RX_NO_DATA_NOTIF))
                iwl_mvm_rx_monitor_no_data(mvm, napi, rxb, 0);
        else
                iwl_mvm_rx_common(mvm, rxb, pkt);
}

static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode,
                             const struct iwl_device_cmd *cmd)
{
        struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);

        /*
         * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA
         * commands that need to block the Tx queues.
         */
        iwl_trans_block_txq_ptrs(mvm->trans, false);
}

static int iwl_mvm_is_static_queue(struct iwl_mvm *mvm, int queue)
{
        return queue == mvm->aux_queue || queue == mvm->probe_queue ||
                queue == mvm->p2p_dev_queue || queue == mvm->snif_queue;
}

static void iwl_mvm_queue_state_change(struct iwl_op_mode *op_mode,
                                       int hw_queue, bool start)
{
        struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
        struct ieee80211_sta *sta;
        struct ieee80211_txq *txq;
        struct iwl_mvm_txq *mvmtxq;
        int i;
        unsigned long tid_bitmap;
        struct iwl_mvm_sta *mvmsta;
        u8 sta_id;

        sta_id = iwl_mvm_has_new_tx_api(mvm) ?
                mvm->tvqm_info[hw_queue].sta_id :
                mvm->queue_info[hw_queue].ra_sta_id;

        if (WARN_ON_ONCE(sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id)))
                return;

        rcu_read_lock();

        sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
        if (IS_ERR_OR_NULL(sta))
                goto out;
        mvmsta = iwl_mvm_sta_from_mac80211(sta);

        if (iwl_mvm_is_static_queue(mvm, hw_queue)) {
                if (!start)
                        ieee80211_stop_queues(mvm->hw);
                else if (mvmsta->sta_state != IEEE80211_STA_NOTEXIST)
                        ieee80211_wake_queues(mvm->hw);

                goto out;
        }

        if (iwl_mvm_has_new_tx_api(mvm)) {
                int tid = mvm->tvqm_info[hw_queue].txq_tid;

                tid_bitmap = BIT(tid);
        } else {
                tid_bitmap = mvm->queue_info[hw_queue].tid_bitmap;
        }

        for_each_set_bit(i, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
                int tid = i;

                if (tid == IWL_MAX_TID_COUNT)
                        tid = IEEE80211_NUM_TIDS;

                txq = sta->txq[tid];
                mvmtxq = iwl_mvm_txq_from_mac80211(txq);
                mvmtxq->stopped = !start;

                if (start && mvmsta->sta_state != IEEE80211_STA_NOTEXIST)
                        iwl_mvm_mac_itxq_xmit(mvm->hw, txq);
        }

out:
        rcu_read_unlock();
}

static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
{
        iwl_mvm_queue_state_change(op_mode, hw_queue, false);
}

static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
{
        iwl_mvm_queue_state_change(op_mode, hw_queue, true);
}

static void iwl_mvm_set_rfkill_state(struct iwl_mvm *mvm)
{
        bool state = iwl_mvm_is_radio_killed(mvm);

        if (state)
                wake_up(&mvm->rx_sync_waitq);

        wiphy_rfkill_set_hw_state(mvm->hw->wiphy, state);
}

void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
{
        if (state)
                set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
        else
                clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);

        iwl_mvm_set_rfkill_state(mvm);
}

static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
{
        struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
        bool rfkill_safe_init_done = READ_ONCE(mvm->rfkill_safe_init_done);
        bool unified = iwl_mvm_has_unified_ucode(mvm);

        if (state)
                set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
        else
                clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);

        iwl_mvm_set_rfkill_state(mvm);

         /* iwl_run_init_mvm_ucode is waiting for results, abort it. */
        if (rfkill_safe_init_done)
                iwl_abort_notification_waits(&mvm->notif_wait);

        /*
         * Don't ask the transport to stop the firmware. We'll do it
         * after cfg80211 takes us down.
         */
        if (unified)
                return false;

        /*
         * Stop the device if we run OPERATIONAL firmware or if we are in the
         * middle of the calibrations.
         */
        return state && rfkill_safe_init_done;
}

static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
{
        struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
        struct ieee80211_tx_info *info;

        info = IEEE80211_SKB_CB(skb);
        iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
        ieee80211_free_txskb(mvm->hw, skb);
}

struct iwl_mvm_reprobe {
        struct device *dev;
        struct work_struct work;
};

static void iwl_mvm_reprobe_wk(struct work_struct *wk)
{
        struct iwl_mvm_reprobe *reprobe;

        reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
        if (device_reprobe(reprobe->dev))
                dev_err(reprobe->dev, "reprobe failed!\n");
        kfree(reprobe);
        module_put(THIS_MODULE);
}

void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
{
        iwl_abort_notification_waits(&mvm->notif_wait);
        iwl_dbg_tlv_del_timers(mvm->trans);

        /*
         * This is a bit racy, but worst case we tell mac80211 about
         * a stopped/aborted scan when that was already done which
         * is not a problem. It is necessary to abort any os scan
         * here because mac80211 requires having the scan cleared
         * before restarting.
         * We'll reset the scan_status to NONE in restart cleanup in
         * the next start() call from mac80211. If restart isn't called
         * (no fw restart) scan status will stay busy.
         */
        iwl_mvm_report_scan_aborted(mvm);

        /*
         * If we're restarting already, don't cycle restarts.
         * If INIT fw asserted, it will likely fail again.
         * If WoWLAN fw asserted, don't restart either, mac80211
         * can't recover this since we're already half suspended.
         */
        if (!mvm->fw_restart && fw_error) {
                iwl_fw_error_collect(&mvm->fwrt);
        } else if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
                struct iwl_mvm_reprobe *reprobe;

                IWL_ERR(mvm,
                        "Firmware error during reconfiguration - reprobe!\n");

                /*
                 * get a module reference to avoid doing this while unloading
                 * anyway and to avoid scheduling a work with code that's
                 * being removed.
                 */
                if (!try_module_get(THIS_MODULE)) {
                        IWL_ERR(mvm, "Module is being unloaded - abort\n");
                        return;
                }

                reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
                if (!reprobe) {
                        module_put(THIS_MODULE);
                        return;
                }
                reprobe->dev = mvm->trans->dev;
                INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
                schedule_work(&reprobe->work);
        } else if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED,
                            &mvm->status)) {
                IWL_ERR(mvm, "HW restart already requested, but not started\n");
        } else if (mvm->fwrt.cur_fw_img == IWL_UCODE_REGULAR &&
                   mvm->hw_registered &&
                   !test_bit(STATUS_TRANS_DEAD, &mvm->trans->status)) {
                if (mvm->fw->ucode_capa.error_log_size) {
                        u32 src_size = mvm->fw->ucode_capa.error_log_size;
                        u32 src_addr = mvm->fw->ucode_capa.error_log_addr;
                        u8 *recover_buf = kzalloc(src_size, GFP_ATOMIC);

                        if (recover_buf) {
                                mvm->error_recovery_buf = recover_buf;
                                iwl_trans_read_mem_bytes(mvm->trans,
                                                         src_addr,
                                                         recover_buf,
                                                         src_size);
                        }
                }

                iwl_fw_error_collect(&mvm->fwrt);

                if (fw_error && mvm->fw_restart > 0)
                        mvm->fw_restart--;
                set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
                ieee80211_restart_hw(mvm->hw);
        }
}

static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
{
        struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);

        if (!test_bit(STATUS_TRANS_DEAD, &mvm->trans->status))
                iwl_mvm_dump_nic_error_log(mvm);

        iwl_mvm_nic_restart(mvm, true);
}

static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
{
        struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);

        WARN_ON(1);
        iwl_mvm_nic_restart(mvm, true);
}

#define IWL_MVM_COMMON_OPS                                      \
        /* these could be differentiated */                     \
        .async_cb = iwl_mvm_async_cb,                           \
        .queue_full = iwl_mvm_stop_sw_queue,                    \
        .queue_not_full = iwl_mvm_wake_sw_queue,                \
        .hw_rf_kill = iwl_mvm_set_hw_rfkill_state,              \
        .free_skb = iwl_mvm_free_skb,                           \
        .nic_error = iwl_mvm_nic_error,                         \
        .cmd_queue_full = iwl_mvm_cmd_queue_full,               \
        .nic_config = iwl_mvm_nic_config,                       \
        /* as we only register one, these MUST be common! */    \
        .start = iwl_op_mode_mvm_start,                         \
        .stop = iwl_op_mode_mvm_stop

static const struct iwl_op_mode_ops iwl_mvm_ops = {
        IWL_MVM_COMMON_OPS,
        .rx = iwl_mvm_rx,
};

static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode,
                              struct napi_struct *napi,
                              struct iwl_rx_cmd_buffer *rxb,
                              unsigned int queue)
{
        struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
        struct iwl_rx_packet *pkt = rxb_addr(rxb);
        u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);

        if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)))
                iwl_mvm_rx_frame_release(mvm, napi, rxb, queue);
        else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
                                         RX_QUEUES_NOTIFICATION)))
                iwl_mvm_rx_queue_notif(mvm, napi, rxb, queue);
        else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
                iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue);
}

static const struct iwl_op_mode_ops iwl_mvm_ops_mq = {
        IWL_MVM_COMMON_OPS,
        .rx = iwl_mvm_rx_mq,
        .rx_rss = iwl_mvm_rx_mq_rss,
};