ops.c 50.1 KB
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/******************************************************************************
 *
 * 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
 *
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 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
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 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
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 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
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 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
 * USA
 *
 * The full GNU General Public License is included in this distribution
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 * in the file called COPYING.
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 *
 * Contact Information:
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 *  Intel Linux Wireless <linuxwifi@intel.com>
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 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
 * BSD LICENSE
 *
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 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
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 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
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 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
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 * 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>
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#include <linux/vmalloc.h>
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#include <net/mac80211.h>

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#include "fw/notif-wait.h"
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#include "iwl-trans.h"
#include "iwl-op-mode.h"
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#include "fw/img.h"
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#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"
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#include "fw/api/scan.h"
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#include "time-event.h"
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#include "fw-api.h"
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#include "fw/api/scan.h"
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#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;
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static const struct iwl_op_mode_ops iwl_mvm_ops_mq;
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struct iwl_mvm_mod_params iwlmvm_mod_params = {
	.power_scheme = IWL_POWER_SCHEME_BPS,
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	.tfd_q_hang_detect = true
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	/* rest of fields are 0 by default */
};

module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, S_IRUGO);
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, S_IRUGO);
MODULE_PARM_DESC(power_scheme,
		 "power management scheme: 1-active, 2-balanced, 3-low power, default: 2");
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module_param_named(tfd_q_hang_detect, iwlmvm_mod_params.tfd_q_hang_detect,
		   bool, S_IRUGO);
MODULE_PARM_DESC(tfd_q_hang_detect,
		 "TFD queues hang detection (default: true");
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/*
 * 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);
		iwl_mvm_rate_control_unregister();
	}

	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;
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	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;
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	/* 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);

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	/*
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	 * 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.
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	 */
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	if (mvm->trans->cfg->device_family < IWL_DEVICE_FAMILY_8000)
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		reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI;
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	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,
				reg_val);
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	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.
	 */
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	if (!mvm->trans->cfg->apmg_not_supported)
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		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);
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}

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/**
 * 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
 */
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struct iwl_rx_handlers {
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	u16 cmd_id;
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	enum iwl_rx_handler_context context;
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	void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
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};

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#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 }
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/*
 * 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.
 *
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 * The handler can be one from three contexts, see &iwl_rx_handler_context
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 */
static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
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	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(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),
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	RX_HANDLER(ANTENNA_COUPLING_NOTIFICATION,
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		   iwl_mvm_rx_ant_coupling_notif, RX_HANDLER_ASYNC_LOCKED),
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	RX_HANDLER(BA_WINDOW_STATUS_NOTIFICATION_ID,
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		   iwl_mvm_window_status_notif, RX_HANDLER_SYNC),
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	RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif,
		   RX_HANDLER_SYNC),
	RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc,
		   RX_HANDLER_ASYNC_LOCKED),
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	RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, RX_HANDLER_SYNC),
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	RX_HANDLER(SCAN_ITERATION_COMPLETE,
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		   iwl_mvm_rx_lmac_scan_iter_complete_notif, RX_HANDLER_SYNC),
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	RX_HANDLER(SCAN_OFFLOAD_COMPLETE,
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		   iwl_mvm_rx_lmac_scan_complete_notif,
		   RX_HANDLER_ASYNC_LOCKED),
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	RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_match_found,
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		   RX_HANDLER_SYNC),
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	RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif,
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		   RX_HANDLER_ASYNC_LOCKED),
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	RX_HANDLER(SCAN_ITERATION_COMPLETE_UMAC,
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		   iwl_mvm_rx_umac_scan_iter_complete_notif, RX_HANDLER_SYNC),
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	RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif,
		   RX_HANDLER_SYNC),
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	RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
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		   RX_HANDLER_SYNC),
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	RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, RX_HANDLER_SYNC),
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	RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION,
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		   iwl_mvm_power_uapsd_misbehaving_ap_notif, RX_HANDLER_SYNC),
	RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif,
		   RX_HANDLER_ASYNC_LOCKED),
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	RX_HANDLER_GRP(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE,
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		       iwl_mvm_temp_notif, RX_HANDLER_ASYNC_UNLOCKED),
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	RX_HANDLER_GRP(PHY_OPS_GROUP, CT_KILL_NOTIFICATION,
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		       iwl_mvm_ct_kill_notif, RX_HANDLER_SYNC),
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	RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif,
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		   RX_HANDLER_ASYNC_LOCKED),
	RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif,
		   RX_HANDLER_SYNC),
	RX_HANDLER(TOF_NOTIFICATION, iwl_mvm_tof_resp_handler,
		   RX_HANDLER_ASYNC_LOCKED),
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	RX_HANDLER_GRP(DEBUG_GROUP, MFU_ASSERT_DUMP_NTF,
		       iwl_mvm_mfu_assert_dump_notif, RX_HANDLER_SYNC),
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	RX_HANDLER_GRP(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF,
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		       iwl_mvm_rx_stored_beacon_notif, RX_HANDLER_SYNC),
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	RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF,
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		       iwl_mvm_mu_mimo_grp_notif, RX_HANDLER_SYNC),
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	RX_HANDLER_GRP(DATA_PATH_GROUP, STA_PM_NOTIF,
		       iwl_mvm_sta_pm_notif, RX_HANDLER_SYNC),
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};
#undef RX_HANDLER
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#undef RX_HANDLER_GRP
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/* 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(ANTENNA_COUPLING_NOTIFICATION),
	HCMD_NAME(SCAN_CFG_CMD),
	HCMD_NAME(SCAN_REQ_UMAC),
	HCMD_NAME(SCAN_ABORT_UMAC),
	HCMD_NAME(SCAN_COMPLETE_UMAC),
	HCMD_NAME(TOF_CMD),
	HCMD_NAME(TOF_NOTIFICATION),
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	HCMD_NAME(BA_WINDOW_STATUS_NOTIFICATION_ID),
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	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(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_CORUN_LUT),
	HCMD_NAME(BT_COEX_UPDATE_REDUCED_TXP),
	HCMD_NAME(BT_COEX_CI),
	HCMD_NAME(PHY_CONFIGURATION_CMD),
	HCMD_NAME(CALIB_RES_NOTIF_PHY_DB),
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	HCMD_NAME(PHY_DB_CMD),
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	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),
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	HCMD_NAME(RSS_CONFIG_CMD),
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	HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC),
	HCMD_NAME(REPLY_RX_PHY_CMD),
	HCMD_NAME(REPLY_RX_MPDU_CMD),
	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),
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};
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/* 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),
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	HCMD_NAME(INIT_EXTENDED_CFG_CMD),
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};

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/* 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(LINK_QUALITY_MEASUREMENT_CMD),
	HCMD_NAME(LINK_QUALITY_MEASUREMENT_COMPLETE_NOTIF),
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	HCMD_NAME(CHANNEL_SWITCH_NOA_NOTIF),
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};

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/* 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),
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	HCMD_NAME(CTDP_CONFIG_CMD),
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	HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD),
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	HCMD_NAME(GEO_TX_POWER_LIMIT),
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	HCMD_NAME(CT_KILL_NOTIFICATION),
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	HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE),
};

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/* 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[] = {
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	HCMD_NAME(DQA_ENABLE_CMD),
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	HCMD_NAME(UPDATE_MU_GROUPS_CMD),
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	HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD),
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	HCMD_NAME(STA_PM_NOTIF),
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	HCMD_NAME(MU_GROUP_MGMT_NOTIF),
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	HCMD_NAME(RX_QUEUES_NOTIFICATION),
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};

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/* 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(MFU_ASSERT_DUMP_NTF),
};

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/* 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),
};

471 472 473 474 475
/* 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),
476
	HCMD_NAME(NVM_GET_INFO),
477 478
};

479 480 481
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),
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),
487 488
	[REGULATORY_AND_NVM_GROUP] =
		HCMD_ARR(iwl_mvm_regulatory_and_nvm_names),
489 490
};

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/* this forward declaration can avoid to export the function */
static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
493
static void iwl_mvm_d0i3_exit_work(struct work_struct *wk);
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495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511
static u32 calc_min_backoff(struct iwl_trans *trans, const struct iwl_cfg *cfg)
{
	const struct iwl_pwr_tx_backoff *pwr_tx_backoff = cfg->pwr_tx_backoffs;

	if (!pwr_tx_backoff)
		return 0;

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

		pwr_tx_backoff++;
	}

	return 0;
}

512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534
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);
}

535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562
static int iwl_mvm_fwrt_dump_start(void *ctx)
{
	struct iwl_mvm *mvm = ctx;
	int ret;

	ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
	if (ret)
		return ret;

	mutex_lock(&mvm->mutex);

	return 0;
}

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

	mutex_unlock(&mvm->mutex);

	iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
}

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,
};

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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;
575
	u32 min_backoff;
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577 578 579 580 581 582 583
	/*
	 * 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);

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	/********************************
	 * 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;

593 594 595
	if (cfg->max_rx_agg_size)
		hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size;

596 597 598
	if (cfg->max_tx_agg_size)
		hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size;

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	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;

608
	iwl_fw_runtime_init(&mvm->fwrt, trans, fw, &iwl_mvm_fwrt_ops, mvm);
609

610 611
	mvm->init_status = 0;

612 613
	if (iwl_mvm_has_new_rx_api(mvm)) {
		op_mode->ops = &iwl_mvm_ops_mq;
614
		trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_desc);
615 616
	} else {
		op_mode->ops = &iwl_mvm_ops;
617 618
		trans->rx_mpdu_cmd_hdr_size =
			sizeof(struct iwl_rx_mpdu_res_start);
619 620 621 622 623

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

624
	mvm->fw_restart = iwlwifi_mod_params.fw_restart ? -1 : 0;
625

626 627
	if (!iwl_mvm_is_dqa_supported(mvm)) {
		mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1;
628 629 630 631

		if (mvm->cfg->base_params->num_of_queues == 16) {
			mvm->aux_queue = 11;
			mvm->first_agg_queue = 12;
632 633
			BUILD_BUG_ON(BITS_PER_BYTE *
				     sizeof(mvm->hw_queue_to_mac80211[0]) < 12);
634 635 636
		} else {
			mvm->aux_queue = 15;
			mvm->first_agg_queue = 16;
637 638
			BUILD_BUG_ON(BITS_PER_BYTE *
				     sizeof(mvm->hw_queue_to_mac80211[0]) < 16);
639
		}
640
	} else {
641
		mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE;
642 643
		mvm->probe_queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE;
		mvm->p2p_dev_queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE;
644 645 646
		mvm->first_agg_queue = IWL_MVM_DQA_MIN_DATA_QUEUE;
		mvm->last_agg_queue = IWL_MVM_DQA_MAX_DATA_QUEUE;
	}
647
	mvm->sf_state = SF_UNINIT;
648
	if (iwl_mvm_has_new_tx_api(mvm))
649
		iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_REGULAR);
650
	else
651
		iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_INIT);
652
	mvm->drop_bcn_ap_mode = true;
653

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	mutex_init(&mvm->mutex);
655
	mutex_init(&mvm->d0i3_suspend_mutex);
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	spin_lock_init(&mvm->async_handlers_lock);
	INIT_LIST_HEAD(&mvm->time_event_list);
658
	INIT_LIST_HEAD(&mvm->aux_roc_te_list);
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	INIT_LIST_HEAD(&mvm->async_handlers_list);
	spin_lock_init(&mvm->time_event_lock);
661
	spin_lock_init(&mvm->queue_info_lock);
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	INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
	INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
	INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk);
666
	INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
667
	INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
668
	INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk);
669
	INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk);
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670

671
	spin_lock_init(&mvm->d0i3_tx_lock);
672
	spin_lock_init(&mvm->refs_lock);
673 674
	skb_queue_head_init(&mvm->d0i3_tx);
	init_waitqueue_head(&mvm->d0i3_exit_waitq);
675
	init_waitqueue_head(&mvm->rx_sync_waitq);
676

677 678
	atomic_set(&mvm->queue_sync_counter, 0);

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

681 682
	INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork);

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	/*
	 * 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);
690
	switch (iwlwifi_mod_params.amsdu_size) {
691
	case IWL_AMSDU_DEF:
692 693 694 695 696 697 698 699 700 701 702 703 704 705
	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 = IWL_AMSDU_4K;
	}
706 707 708 709

	/* the hardware splits the A-MSDU */
	if (mvm->cfg->mq_rx_supported)
		trans_cfg.rx_buf_size = IWL_AMSDU_4K;
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711 712
	trans->wide_cmd_header = true;
	trans_cfg.bc_table_dword = true;
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714 715
	trans_cfg.command_groups = iwl_mvm_groups;
	trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups);
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717 718 719 720
	if (iwl_mvm_is_dqa_supported(mvm))
		trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE;
	else
		trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE;
721
	trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
722
	trans_cfg.scd_set_active = true;
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724 725 726
	trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info,
					  driver_data[2]);

727
	trans_cfg.sdio_adma_addr = fw->sdio_adma_addr;
728
	trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD;
729

730 731
	/* Set a short watchdog for the command queue */
	trans_cfg.cmd_q_wdg_timeout =
732
		iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
733

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	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;
742 743 744 745
	trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv;
	trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num;
	memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv,
	       sizeof(trans->dbg_conf_tlv));
746
	trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv;
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	/* 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->cfg->name, mvm->trans->hw_rev);

761
	if (iwlwifi_mod_params.nvm_file)
762
		mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
763 764 765
	else
		IWL_DEBUG_EEPROM(mvm->trans->dev,
				 "working without external nvm file\n");
766

767 768
	err = iwl_trans_start_hw(mvm->trans);
	if (err)
769 770
		goto out_free;

771 772
	mutex_lock(&mvm->mutex);
	iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE);
773
	err = iwl_run_init_mvm_ucode(mvm, true);
774
	if (!iwlmvm_mod_params.init_dbg)
775 776 777 778
		iwl_mvm_stop_device(mvm);
	iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE);
	mutex_unlock(&mvm->mutex);
	/* returns 0 if successful, 1 if success but in rfkill */
779
	if (err < 0) {
780 781
		IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
		goto out_free;
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782 783
	}

784
	scan_size = iwl_mvm_scan_size(mvm);
785

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

790 791 792
	/* Set EBS as successful as long as not stated otherwise by the FW. */
	mvm->last_ebs_successful = true;

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	err = iwl_mvm_mac_setup_register(mvm);
	if (err)
		goto out_free;
796
	mvm->hw_registered = true;
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797

798 799 800
	min_backoff = calc_min_backoff(trans, cfg);
	iwl_mvm_thermal_initialize(mvm, min_backoff);

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	err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
	if (err)
		goto out_unregister;

805 806 807 808 809
	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));
810

811 812 813 814
	/* The transport always starts with a taken reference, we can
	 * release it now if d0i3 is supported */
	if (iwl_mvm_is_d0i3_supported(mvm))
		iwl_trans_unref(mvm->trans);
815

816 817
	iwl_mvm_tof_init(mvm);

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	return op_mode;

 out_unregister:
821 822 823
	if (iwlmvm_mod_params.init_dbg)
		return op_mode;

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824
	ieee80211_unregister_hw(mvm->hw);
825
	mvm->hw_registered = false;
826
	iwl_mvm_leds_exit(mvm);
827
	iwl_mvm_thermal_exit(mvm);
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 out_free:
829
	iwl_fw_flush_dump(&mvm->fwrt);
830 831 832

	if (iwlmvm_mod_params.init_dbg)
		return op_mode;
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	iwl_phy_db_free(mvm->phy_db);
	kfree(mvm->scan_cmd);
835 836
	iwl_trans_op_mode_leave(trans);

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	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;

846 847 848 849 850 851 852
	/* If d0i3 is supported, we have released the reference that
	 * the transport started with, so we should take it back now
	 * that we are leaving.
	 */
	if (iwl_mvm_is_d0i3_supported(mvm))
		iwl_trans_ref(mvm->trans);

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853 854
	iwl_mvm_leds_exit(mvm);

855
	iwl_mvm_thermal_exit(mvm);
856

857 858 859 860
	if (mvm->init_status & IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE) {
		ieee80211_unregister_hw(mvm->hw);
		mvm->init_status &= ~IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE;
	}
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	kfree(mvm->scan_cmd);
863 864
	kfree(mvm->mcast_filter_cmd);
	mvm->mcast_filter_cmd = NULL;
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866 867 868 869
#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
	kfree(mvm->d3_resume_sram);
#endif

870
	iwl_trans_op_mode_leave(mvm->trans);
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	iwl_phy_db_free(mvm->phy_db);
	mvm->phy_db = NULL;

875
	kfree(mvm->nvm_data);
876
	for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
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877 878
		kfree(mvm->nvm_sections[i].data);

879 880
	iwl_mvm_tof_clean(mvm);

881 882 883
	mutex_destroy(&mvm->mutex);
	mutex_destroy(&mvm->d0i3_suspend_mutex);

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	ieee80211_free_hw(mvm->hw);
}

struct iwl_async_handler_entry {
	struct list_head list;
	struct iwl_rx_cmd_buffer rxb;
890
	enum iwl_rx_handler_context context;
891
	void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
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};

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;
912
	LIST_HEAD(local_list);
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	/* 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) {
925 926
		if (entry->context == RX_HANDLER_ASYNC_LOCKED)
			mutex_lock(&mvm->mutex);
927
		entry->fn(mvm, &entry->rxb);
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928 929
		iwl_free_rxb(&entry->rxb);
		list_del(&entry->list);
930 931
		if (entry->context == RX_HANDLER_ASYNC_LOCKED)
			mutex_unlock(&mvm->mutex);
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		kfree(entry);
	}
}

936 937 938 939 940 941 942 943 944 945 946 947 948
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;

	if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF))
		return;

	trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF);
	cmds_trig = (void *)trig->data;

949
	if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt, NULL, trig))
950 951 952 953 954 955 956
		return;

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

957 958
		if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
		    cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
959 960
			continue;

961 962 963
		iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
					"CMD 0x%02x.%02x received",
					pkt->hdr.group_id, pkt->hdr.cmd);
964 965 966 967
		break;
	}
}

968 969 970
static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
			      struct iwl_rx_cmd_buffer *rxb,
			      struct iwl_rx_packet *pkt)
J
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971
{
972
	int i;
973

974 975
	iwl_mvm_rx_check_trigger(mvm, pkt);

J
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976 977 978 979 980 981 982 983 984
	/*
	 * 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];
985 986
		struct iwl_async_handler_entry *entry;

987
		if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
988 989
			continue;

990
		if (rx_h->context == RX_HANDLER_SYNC) {
991
			rx_h->fn(mvm, rxb);
992
			return;
993
		}
994 995 996 997

		entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
		/* we can't do much... */
		if (!entry)
998
			return;
999 1000 1001 1002 1003

		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;
1004
		entry->context = rx_h->context;
1005 1006 1007 1008 1009
		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;
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1010 1011 1012
	}
}

1013 1014 1015 1016 1017 1018
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);
1019
	u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1020

1021
	if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1022
		iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
1023
	else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD))
1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034
		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);
1035
	u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1036

1037
	if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1038
		iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0);
1039 1040
	else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
					 RX_QUEUES_NOTIFICATION)))
1041
		iwl_mvm_rx_queue_notif(mvm, rxb, 0);
1042
	else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))
1043
		iwl_mvm_rx_frame_release(mvm, napi, rxb, 0);
1044 1045 1046 1047
	else
		iwl_mvm_rx_common(mvm, rxb, pkt);
}

1048
void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
J
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1049
{
1050
	int q;
J
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1051

1052
	if (WARN_ON_ONCE(!mq))
J
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1053 1054
		return;

1055 1056 1057
	for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
		if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) {
			IWL_DEBUG_TX_QUEUES(mvm,
1058
					    "mac80211 %d already stopped\n", q);
1059 1060 1061 1062 1063
			continue;
		}

		ieee80211_stop_queue(mvm->hw, q);
	}
J
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1064 1065
}

1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077
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);
}

1078
static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
J
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1079 1080
{
	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1081
	unsigned long mq;
J
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1082

1083
	spin_lock_bh(&mvm->queue_info_lock);
1084
	mq = mvm->hw_queue_to_mac80211[hw_queue];
1085
	spin_unlock_bh(&mvm->queue_info_lock);
J
Johannes Berg 已提交
1086

1087 1088 1089 1090 1091 1092 1093
	iwl_mvm_stop_mac_queues(mvm, mq);
}

void iwl_mvm_start_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
{
	int q;

1094
	if (WARN_ON_ONCE(!mq))
J
Johannes Berg 已提交
1095 1096
		return;

1097 1098 1099
	for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
		if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) {
			IWL_DEBUG_TX_QUEUES(mvm,
1100
					    "mac80211 %d still stopped\n", q);
1101 1102 1103 1104 1105
			continue;
		}

		ieee80211_wake_queue(mvm->hw, q);
	}
J
Johannes Berg 已提交
1106 1107
}

1108 1109 1110 1111 1112 1113
static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
{
	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
	unsigned long mq;

	spin_lock_bh(&mvm->queue_info_lock);
1114
	mq = mvm->hw_queue_to_mac80211[hw_queue];
1115 1116 1117 1118 1119
	spin_unlock_bh(&mvm->queue_info_lock);

	iwl_mvm_start_mac_queues(mvm, mq);
}

1120 1121 1122 1123 1124 1125 1126 1127 1128 1129
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);
}

1130 1131 1132 1133 1134 1135 1136
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);

1137
	iwl_mvm_set_rfkill_state(mvm);
1138 1139
}

1140
static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
J
Johannes Berg 已提交
1141 1142
{
	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1143
	bool calibrating = ACCESS_ONCE(mvm->calibrating);
J
Johannes Berg 已提交
1144 1145 1146 1147 1148 1149

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

1150
	iwl_mvm_set_rfkill_state(mvm);
1151

1152 1153 1154 1155 1156 1157 1158 1159
	/* iwl_run_init_mvm_ucode is waiting for results, abort it */
	if (calibrating)
		iwl_abort_notification_waits(&mvm->notif_wait);

	/*
	 * Stop the device if we run OPERATIONAL firmware or if we are in the
	 * middle of the calibrations.
	 */
1160
	return state && (mvm->fwrt.cur_fw_img != IWL_UCODE_INIT || calibrating);
J
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1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172
}

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);
}

1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188
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);
}

1189
void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
J
Johannes Berg 已提交
1190 1191 1192
{
	iwl_abort_notification_waits(&mvm->notif_wait);

1193 1194 1195 1196 1197 1198 1199 1200 1201 1202
	/*
	 * 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.
	 */
1203
	iwl_mvm_report_scan_aborted(mvm);
1204

J
Johannes Berg 已提交
1205 1206 1207 1208 1209 1210
	/*
	 * 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.
	 */
1211
	if (!mvm->fw_restart && fw_error) {
1212 1213
		iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert,
					NULL);
1214 1215
	} else if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART,
				    &mvm->status)) {
1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238
		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);
1239
	} else if (mvm->fwrt.cur_fw_img == IWL_UCODE_REGULAR &&
1240
		   mvm->hw_registered) {
1241 1242 1243
		/* don't let the transport/FW power down */
		iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);

1244 1245
		if (fw_error && mvm->fw_restart > 0)
			mvm->fw_restart--;
J
Johannes Berg 已提交
1246 1247 1248 1249
		ieee80211_restart_hw(mvm->hw);
	}
}

1250 1251 1252 1253 1254
static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
{
	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);

	iwl_mvm_dump_nic_error_log(mvm);
1255

1256
	iwl_mvm_nic_restart(mvm, true);
1257 1258
}

J
Johannes Berg 已提交
1259 1260
static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
{
1261 1262
	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);

J
Johannes Berg 已提交
1263
	WARN_ON(1);
1264
	iwl_mvm_nic_restart(mvm, true);
J
Johannes Berg 已提交
1265 1266
}

1267 1268
struct iwl_d0i3_iter_data {
	struct iwl_mvm *mvm;
1269
	struct ieee80211_vif *connected_vif;
1270 1271
	u8 ap_sta_id;
	u8 vif_count;
1272 1273
	u8 offloading_tid;
	bool disable_offloading;
1274 1275
};

1276 1277 1278 1279 1280 1281 1282 1283 1284 1285
static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm,
					struct ieee80211_vif *vif,
					struct iwl_d0i3_iter_data *iter_data)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	struct iwl_mvm_sta *mvmsta;
	u32 available_tids = 0;
	u8 tid;

	if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
1286
		    mvmvif->ap_sta_id == IWL_MVM_INVALID_STA))
1287 1288
		return false;

1289 1290
	mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
	if (!mvmsta)
1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301
		return false;

	spin_lock_bh(&mvmsta->lock);
	for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
		struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];

		/*
		 * in case of pending tx packets, don't use this tid
		 * for offloading in order to prevent reuse of the same
		 * qos seq counters.
		 */
1302
		if (iwl_mvm_tid_queued(mvm, tid_data))
1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325
			continue;

		if (tid_data->state != IWL_AGG_OFF)
			continue;

		available_tids |= BIT(tid);
	}
	spin_unlock_bh(&mvmsta->lock);

	/*
	 * disallow protocol offloading if we have no available tid
	 * (with no pending frames and no active aggregation,
	 * as we don't handle "holes" properly - the scheduler needs the
	 * frame's seq number and TFD index to match)
	 */
	if (!available_tids)
		return true;

	/* for simplicity, just use the first available tid */
	iter_data->offloading_tid = ffs(available_tids) - 1;
	return false;
}

1326 1327 1328
static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
					struct ieee80211_vif *vif)
{
1329 1330 1331
	struct iwl_d0i3_iter_data *data = _data;
	struct iwl_mvm *mvm = data->mvm;
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1332 1333 1334 1335 1336 1337 1338
	u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;

	IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr);
	if (vif->type != NL80211_IFTYPE_STATION ||
	    !vif->bss_conf.assoc)
		return;

1339 1340 1341 1342 1343 1344 1345 1346
	/*
	 * in case of pending tx packets or active aggregations,
	 * avoid offloading features in order to prevent reuse of
	 * the same qos seq counters.
	 */
	if (iwl_mvm_disallow_offloading(mvm, vif, data))
		data->disable_offloading = true;

1347
	iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
1348 1349
	iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading,
				   false, flags);
1350 1351 1352 1353 1354 1355 1356

	/*
	 * on init/association, mvm already configures POWER_TABLE_CMD
	 * and REPLY_MCAST_FILTER_CMD, so currently don't
	 * reconfigure them (we might want to use different
	 * params later on, though).
	 */
1357 1358
	data->ap_sta_id = mvmvif->ap_sta_id;
	data->vif_count++;
1359 1360 1361 1362 1363 1364

	/*
	 * no new commands can be sent at this stage, so it's safe
	 * to save the vif pointer during d0i3 entrance.
	 */
	data->connected_vif = vif;
1365 1366
}

1367
static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
1368
				    struct iwl_wowlan_config_cmd *cmd,
1369 1370 1371 1372 1373
				    struct iwl_d0i3_iter_data *iter_data)
{
	struct ieee80211_sta *ap_sta;
	struct iwl_mvm_sta *mvm_ap_sta;

1374
	if (iter_data->ap_sta_id == IWL_MVM_INVALID_STA)
1375 1376 1377 1378 1379 1380 1381 1382 1383
		return;

	rcu_read_lock();

	ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]);
	if (IS_ERR_OR_NULL(ap_sta))
		goto out;

	mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
1384
	cmd->is_11n_connection = ap_sta->ht_cap.ht_supported;
1385
	cmd->offloading_tid = iter_data->offloading_tid;
S
Sara Sharon 已提交
1386
	cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING |
1387
		ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON;
1388 1389 1390 1391
	/*
	 * The d0i3 uCode takes care of the nonqos counters,
	 * so configure only the qos seq ones.
	 */
1392
	iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd);
1393 1394 1395
out:
	rcu_read_unlock();
}
1396 1397

int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
E
Eliad Peller 已提交
1398 1399
{
	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1400
	u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1401
	int ret;
1402 1403 1404
	struct iwl_d0i3_iter_data d0i3_iter_data = {
		.mvm = mvm,
	};
1405 1406 1407
	struct iwl_wowlan_config_cmd wowlan_config_cmd = {
		.wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
					     IWL_WOWLAN_WAKEUP_BEACON_MISS |
1408
					     IWL_WOWLAN_WAKEUP_LINK_CHANGE),
1409
	};
1410 1411
	struct iwl_d3_manager_config d3_cfg_cmd = {
		.min_sleep_time = cpu_to_le32(1000),
1412
		.wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR),
1413
	};
E
Eliad Peller 已提交
1414 1415

	IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
1416

1417
	if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR))
1418 1419
		return -EINVAL;

1420 1421
	set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);

1422 1423 1424 1425 1426 1427 1428 1429 1430
	/*
	 * iwl_mvm_ref_sync takes a reference before checking the flag.
	 * so by checking there is no held reference we prevent a state
	 * in which iwl_mvm_ref_sync continues successfully while we
	 * configure the firmware to enter d0i3
	 */
	if (iwl_mvm_ref_taken(mvm)) {
		IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n");
		clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1431
		wake_up(&mvm->d0i3_exit_waitq);
1432 1433 1434
		return 1;
	}

1435 1436 1437
	ieee80211_iterate_active_interfaces_atomic(mvm->hw,
						   IEEE80211_IFACE_ITER_NORMAL,
						   iwl_mvm_enter_d0i3_iterator,
1438 1439 1440
						   &d0i3_iter_data);
	if (d0i3_iter_data.vif_count == 1) {
		mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
1441
		mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
1442 1443
	} else {
		WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
1444
		mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1445
		mvm->d0i3_offloading = false;
1446
	}
1447

1448 1449 1450
	/* make sure we have no running tx while configuring the seqno */
	synchronize_net();

1451
	/* Flush the hw queues, in case something got queued during entry */
1452 1453 1454 1455 1456 1457 1458 1459 1460
	/* TODO new tx api */
	if (iwl_mvm_has_new_tx_api(mvm)) {
		WARN_ONCE(1, "d0i3: Need to implement flush TX queue\n");
	} else {
		ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm),
					    flags);
		if (ret)
			return ret;
	}
1461

1462
	/* configure wowlan configuration only if needed */
1463
	if (mvm->d0i3_ap_sta_id != IWL_MVM_INVALID_STA) {
1464 1465 1466 1467 1468 1469
		/* wake on beacons only if beacon storing isn't supported */
		if (!fw_has_capa(&mvm->fw->ucode_capa,
				 IWL_UCODE_TLV_CAPA_BEACON_STORING))
			wowlan_config_cmd.wakeup_filter |=
				cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING);

1470 1471 1472 1473
		iwl_mvm_wowlan_config_key_params(mvm,
						 d0i3_iter_data.connected_vif,
						 true, flags);

1474 1475 1476 1477 1478 1479 1480 1481 1482
		iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd,
					&d0i3_iter_data);

		ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags,
					   sizeof(wowlan_config_cmd),
					   &wowlan_config_cmd);
		if (ret)
			return ret;
	}
1483

1484 1485 1486
	return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
				    flags | CMD_MAKE_TRANS_IDLE,
				    sizeof(d3_cfg_cmd), &d3_cfg_cmd);
E
Eliad Peller 已提交
1487 1488
}

1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502
static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac,
				       struct ieee80211_vif *vif)
{
	struct iwl_mvm *mvm = _data;
	u32 flags = CMD_ASYNC | CMD_HIGH_PRIO;

	IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr);
	if (vif->type != NL80211_IFTYPE_STATION ||
	    !vif->bss_conf.assoc)
		return;

	iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags);
}

1503
struct iwl_mvm_d0i3_exit_work_iter_data {
1504
	struct iwl_mvm *mvm;
1505
	struct iwl_wowlan_status *status;
1506 1507 1508
	u32 wakeup_reasons;
};

1509 1510
static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac,
					struct ieee80211_vif *vif)
1511
{
1512
	struct iwl_mvm_d0i3_exit_work_iter_data *data = _data;
1513
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1514
	u32 reasons = data->wakeup_reasons;
1515

1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526
	/* consider only the relevant station interface */
	if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
	    data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id)
		return;

	if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)
		iwl_mvm_connection_loss(data->mvm, vif, "D0i3");
	else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON)
		ieee80211_beacon_loss(vif);
	else
		iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status);
1527 1528
}

1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539
void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq)
{
	struct ieee80211_sta *sta = NULL;
	struct iwl_mvm_sta *mvm_ap_sta;
	int i;
	bool wake_queues = false;

	lockdep_assert_held(&mvm->mutex);

	spin_lock_bh(&mvm->d0i3_tx_lock);

1540
	if (mvm->d0i3_ap_sta_id == IWL_MVM_INVALID_STA)
1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556
		goto out;

	IWL_DEBUG_RPM(mvm, "re-enqueue packets\n");

	/* get the sta in order to update seq numbers and re-enqueue skbs */
	sta = rcu_dereference_protected(
			mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id],
			lockdep_is_held(&mvm->mutex));

	if (IS_ERR_OR_NULL(sta)) {
		sta = NULL;
		goto out;
	}

	if (mvm->d0i3_offloading && qos_seq) {
		/* update qos seq numbers if offloading was enabled */
1557
		mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta);
1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577
		for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
			u16 seq = le16_to_cpu(qos_seq[i]);
			/* firmware stores last-used one, we store next one */
			seq += 0x10;
			mvm_ap_sta->tid_data[i].seq_number = seq;
		}
	}
out:
	/* re-enqueue (or drop) all packets */
	while (!skb_queue_empty(&mvm->d0i3_tx)) {
		struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx);

		if (!sta || iwl_mvm_tx_skb(mvm, skb, sta))
			ieee80211_free_txskb(mvm->hw, skb);

		/* if the skb_queue is not empty, we need to wake queues */
		wake_queues = true;
	}
	clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
	wake_up(&mvm->d0i3_exit_waitq);
1578
	mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1579 1580 1581 1582 1583 1584
	if (wake_queues)
		ieee80211_wake_queues(mvm->hw);

	spin_unlock_bh(&mvm->d0i3_tx_lock);
}

1585 1586 1587 1588 1589
static void iwl_mvm_d0i3_exit_work(struct work_struct *wk)
{
	struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work);
	struct iwl_host_cmd get_status_cmd = {
		.id = WOWLAN_GET_STATUSES,
E
Emmanuel Grumbach 已提交
1590
		.flags = CMD_HIGH_PRIO | CMD_WANT_SKB,
1591
	};
1592 1593 1594 1595
	struct iwl_mvm_d0i3_exit_work_iter_data iter_data = {
		.mvm = mvm,
	};

1596
	struct iwl_wowlan_status *status;
1597
	int ret;
1598
	u32 wakeup_reasons = 0;
1599
	__le16 *qos_seq = NULL;
1600 1601 1602 1603 1604 1605 1606 1607

	mutex_lock(&mvm->mutex);
	ret = iwl_mvm_send_cmd(mvm, &get_status_cmd);
	if (ret)
		goto out;

	status = (void *)get_status_cmd.resp_pkt->data;
	wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
1608
	qos_seq = status->qos_seq_ctr;
1609 1610 1611

	IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);

1612 1613 1614 1615 1616 1617
	iter_data.wakeup_reasons = wakeup_reasons;
	iter_data.status = status;
	ieee80211_iterate_active_interfaces(mvm->hw,
					    IEEE80211_IFACE_ITER_NORMAL,
					    iwl_mvm_d0i3_exit_work_iter,
					    &iter_data);
1618
out:
1619
	iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
1620

1621 1622 1623
	IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n",
		       wakeup_reasons);

1624 1625 1626 1627
	/* qos_seq might point inside resp_pkt, so free it only now */
	if (get_status_cmd.resp_pkt)
		iwl_free_resp(&get_status_cmd);

1628 1629 1630
	/* the FW might have updated the regdomain */
	iwl_mvm_update_changed_regdom(mvm);

1631
	iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
1632 1633 1634
	mutex_unlock(&mvm->mutex);
}

1635
int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
E
Eliad Peller 已提交
1636
{
1637 1638
	u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
		    CMD_WAKE_UP_TRANS;
1639
	int ret;
E
Eliad Peller 已提交
1640 1641

	IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
1642

1643
	if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR))
1644 1645
		return -EINVAL;

1646 1647 1648 1649 1650 1651 1652 1653 1654
	mutex_lock(&mvm->d0i3_suspend_mutex);
	if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) {
		IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n");
		__set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags);
		mutex_unlock(&mvm->d0i3_suspend_mutex);
		return 0;
	}
	mutex_unlock(&mvm->d0i3_suspend_mutex);

1655 1656
	ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
	if (ret)
1657
		goto out;
1658 1659 1660 1661 1662

	ieee80211_iterate_active_interfaces_atomic(mvm->hw,
						   IEEE80211_IFACE_ITER_NORMAL,
						   iwl_mvm_exit_d0i3_iterator,
						   mvm);
1663 1664 1665
out:
	schedule_work(&mvm->d0i3_exit_work);
	return ret;
E
Eliad Peller 已提交
1666 1667
}

1668
int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
1669 1670 1671 1672 1673 1674 1675
{
	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);

	iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK);
	return _iwl_mvm_exit_d0i3(mvm);
}

1676 1677
#define IWL_MVM_COMMON_OPS					\
	/* these could be differentiated */			\
1678
	.async_cb = iwl_mvm_async_cb,				\
1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691
	.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,			\
	.enter_d0i3 = iwl_mvm_enter_d0i3,			\
	.exit_d0i3 = iwl_mvm_exit_d0i3,				\
	/* as we only register one, these MUST be common! */	\
	.start = iwl_op_mode_mvm_start,				\
	.stop = iwl_op_mode_mvm_stop

J
Johannes Berg 已提交
1692
static const struct iwl_op_mode_ops iwl_mvm_ops = {
1693 1694 1695 1696 1697 1698 1699 1700 1701 1702
	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);
1703
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1704
	u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1705

1706
	if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)))
1707
		iwl_mvm_rx_frame_release(mvm, napi, rxb, queue);
1708 1709
	else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
					 RX_QUEUES_NOTIFICATION)))
1710
		iwl_mvm_rx_queue_notif(mvm, rxb, queue);
1711
	else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1712
		iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue);
1713 1714 1715 1716 1717 1718
}

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,
J
Johannes Berg 已提交
1719
};