ops.c 49.8 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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 *
 * 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 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>

#include "iwl-notif-wait.h"
#include "iwl-trans.h"
#include "iwl-op-mode.h"
#include "iwl-fw.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"
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#include "fw-dbg.h"
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#include "fw-api.h"
#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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	/*
	 * TODO: Bits 7-8 of CSR in 8000 HW family 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->cfg->device_family != IWL_DEVICE_FAMILY_8000)
		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(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(SCAN_OFFLOAD_HOTSPOTS_CONFIG_CMD),
	HCMD_NAME(SCAN_OFFLOAD_HOTSPOTS_QUERY_CMD),
	HCMD_NAME(BT_COEX_UPDATE_SW_BOOST),
	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(SCAN_OFFLOAD_CONFIG_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(SET_CALIB_DEFAULT_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_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_COEX_PRIO_TABLE),
	HCMD_NAME(BT_COEX_PROT_ENV),
	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(CMD_DTS_MEASUREMENT_TRIGGER),
	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(WOWLAN_TX_POWER_PER_DB),
	HCMD_NAME(SCAN_ITERATION_COMPLETE),
	HCMD_NAME(D0I3_END_CMD),
	HCMD_NAME(LTR_CONFIG),
	HCMD_NAME(REPLY_DEBUG_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_system_names[] = {
	HCMD_NAME(SHARED_MEM_CFG_CMD),
};

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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(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_prot_offload_names[] = {
	HCMD_NAME(STORED_BEACON_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_regulatory_and_nvm_names[] = {
	HCMD_NAME(NVM_ACCESS_COMPLETE),
};

477 478 479
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),
480
	[SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names),
481
	[MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names),
482
	[PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names),
483
	[DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names),
484
	[PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names),
485 486
	[REGULATORY_AND_NVM_GROUP] =
		HCMD_ARR(iwl_mvm_regulatory_and_nvm_names),
487 488
};

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/* this forward declaration can avoid to export the function */
static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
491
static void iwl_mvm_d0i3_exit_work(struct work_struct *wk);
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493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509
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;
}

510 511
static void iwl_mvm_fw_error_dump_wk(struct work_struct *work);

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);
}

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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;
547
	u32 min_backoff;
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548

549 550 551 552 553 554 555
	/*
	 * 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;

565 566 567
	if (cfg->max_rx_agg_size)
		hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size;

568 569 570
	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;

580 581
	if (iwl_mvm_has_new_rx_api(mvm)) {
		op_mode->ops = &iwl_mvm_ops_mq;
582
		trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_desc);
583 584
	} else {
		op_mode->ops = &iwl_mvm_ops;
585 586
		trans->rx_mpdu_cmd_hdr_size =
			sizeof(struct iwl_rx_mpdu_res_start);
587 588 589 590 591

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

592 593
	mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0;

594 595
	if (!iwl_mvm_is_dqa_supported(mvm)) {
		mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1;
596 597 598 599 600 601 602 603

		if (mvm->cfg->base_params->num_of_queues == 16) {
			mvm->aux_queue = 11;
			mvm->first_agg_queue = 12;
		} else {
			mvm->aux_queue = 15;
			mvm->first_agg_queue = 16;
		}
604
	} else {
605
		mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE;
606 607
		mvm->probe_queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE;
		mvm->p2p_dev_queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE;
608 609 610
		mvm->first_agg_queue = IWL_MVM_DQA_MIN_DATA_QUEUE;
		mvm->last_agg_queue = IWL_MVM_DQA_MAX_DATA_QUEUE;
	}
611
	mvm->sf_state = SF_UNINIT;
612 613 614 615
	if (iwl_mvm_has_new_tx_api(mvm))
		mvm->cur_ucode = IWL_UCODE_REGULAR;
	else
		mvm->cur_ucode = IWL_UCODE_INIT;
616
	mvm->drop_bcn_ap_mode = true;
617

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618
	mutex_init(&mvm->mutex);
619
	mutex_init(&mvm->d0i3_suspend_mutex);
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	spin_lock_init(&mvm->async_handlers_lock);
	INIT_LIST_HEAD(&mvm->time_event_list);
622
	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);
625
	spin_lock_init(&mvm->queue_info_lock);
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626 627 628 629

	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);
630
	INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
631
	INIT_DELAYED_WORK(&mvm->fw_dump_wk, iwl_mvm_fw_error_dump_wk);
632
	INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
633
	INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk);
634
	INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk);
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635

636
	spin_lock_init(&mvm->d0i3_tx_lock);
637
	spin_lock_init(&mvm->refs_lock);
638 639
	skb_queue_head_init(&mvm->d0i3_tx);
	init_waitqueue_head(&mvm->d0i3_exit_waitq);
640
	init_waitqueue_head(&mvm->rx_sync_waitq);
641

642 643
	atomic_set(&mvm->queue_sync_counter, 0);

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644 645
	SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);

646 647
	INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork);

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648 649 650 651 652 653 654
	/*
	 * 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);
655
	switch (iwlwifi_mod_params.amsdu_size) {
656
	case IWL_AMSDU_DEF:
657 658 659 660 661 662 663 664 665 666 667 668 669 670
	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;
	}
671 672 673 674

	/* the hardware splits the A-MSDU */
	if (mvm->cfg->mq_rx_supported)
		trans_cfg.rx_buf_size = IWL_AMSDU_4K;
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675

676 677
	trans->wide_cmd_header = true;
	trans_cfg.bc_table_dword = true;
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679 680
	trans_cfg.command_groups = iwl_mvm_groups;
	trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups);
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682 683 684 685
	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;
686
	trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
687
	trans_cfg.scd_set_active = true;
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689 690 691
	trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info,
					  driver_data[2]);

692
	trans_cfg.sdio_adma_addr = fw->sdio_adma_addr;
693
	trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD;
694

695 696
	/* Set a short watchdog for the command queue */
	trans_cfg.cmd_q_wdg_timeout =
697
		iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
698

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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;
707 708 709 710
	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));
711
	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);

726
	if (iwlwifi_mod_params.nvm_file)
727
		mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
728 729 730
	else
		IWL_DEBUG_EEPROM(mvm->trans->dev,
				 "working without external nvm file\n");
731

732 733
	err = iwl_trans_start_hw(mvm->trans);
	if (err)
734 735
		goto out_free;

736 737
	mutex_lock(&mvm->mutex);
	iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE);
738 739 740 741
	if (iwl_mvm_has_new_tx_api(mvm))
		err = iwl_run_unified_mvm_ucode(mvm, true);
	else
		err = iwl_run_init_mvm_ucode(mvm, true);
742 743 744 745 746 747 748 749
	if (!err || !iwlmvm_mod_params.init_dbg)
		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 */
	if (err < 0 && !iwlmvm_mod_params.init_dbg) {
		IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
		goto out_free;
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750 751
	}

752
	scan_size = iwl_mvm_scan_size(mvm);
753

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

758 759 760
	/* Set EBS as successful as long as not stated otherwise by the FW. */
	mvm->last_ebs_successful = true;

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761 762 763
	err = iwl_mvm_mac_setup_register(mvm);
	if (err)
		goto out_free;
764
	mvm->hw_registered = true;
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766 767 768
	min_backoff = calc_min_backoff(trans, cfg);
	iwl_mvm_thermal_initialize(mvm, min_backoff);

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769 770 771 772
	err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
	if (err)
		goto out_unregister;

773 774
	memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));

775 776 777 778
	/* 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);
779

780 781
	iwl_mvm_tof_init(mvm);

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782 783 784 785
	return op_mode;

 out_unregister:
	ieee80211_unregister_hw(mvm->hw);
786
	mvm->hw_registered = false;
787
	iwl_mvm_leds_exit(mvm);
788
	iwl_mvm_thermal_exit(mvm);
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 out_free:
790
	flush_delayed_work(&mvm->fw_dump_wk);
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791 792
	iwl_phy_db_free(mvm->phy_db);
	kfree(mvm->scan_cmd);
793 794
	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;

804 805 806 807 808 809 810
	/* 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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811 812
	iwl_mvm_leds_exit(mvm);

813
	iwl_mvm_thermal_exit(mvm);
814

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815 816 817
	ieee80211_unregister_hw(mvm->hw);

	kfree(mvm->scan_cmd);
818 819
	kfree(mvm->mcast_filter_cmd);
	mvm->mcast_filter_cmd = NULL;
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821 822 823 824
#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
	kfree(mvm->d3_resume_sram);
#endif

825
	iwl_trans_op_mode_leave(mvm->trans);
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826 827 828 829 830

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

	iwl_free_nvm_data(mvm->nvm_data);
831
	for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
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832 833
		kfree(mvm->nvm_sections[i].data);

834 835
	iwl_mvm_tof_clean(mvm);

836 837 838
	mutex_destroy(&mvm->mutex);
	mutex_destroy(&mvm->d0i3_suspend_mutex);

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839 840 841 842 843 844
	ieee80211_free_hw(mvm->hw);
}

struct iwl_async_handler_entry {
	struct list_head list;
	struct iwl_rx_cmd_buffer rxb;
845
	enum iwl_rx_handler_context context;
846
	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;
867
	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) {
880 881
		if (entry->context == RX_HANDLER_ASYNC_LOCKED)
			mutex_lock(&mvm->mutex);
882
		entry->fn(mvm, &entry->rxb);
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883 884
		iwl_free_rxb(&entry->rxb);
		list_del(&entry->list);
885 886
		if (entry->context == RX_HANDLER_ASYNC_LOCKED)
			mutex_unlock(&mvm->mutex);
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		kfree(entry);
	}
}

891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911
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;

	if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig))
		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;

912 913
		if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
		    cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
914 915
			continue;

916
		iwl_mvm_fw_dbg_collect_trig(mvm, trig,
917 918
					    "CMD 0x%02x.%02x received",
					    pkt->hdr.group_id, pkt->hdr.cmd);
919 920 921 922
		break;
	}
}

923 924 925
static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
			      struct iwl_rx_cmd_buffer *rxb,
			      struct iwl_rx_packet *pkt)
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{
927
	int i;
928

929 930
	iwl_mvm_rx_check_trigger(mvm, pkt);

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931 932 933 934 935 936 937 938 939
	/*
	 * 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];
940 941
		struct iwl_async_handler_entry *entry;

942
		if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
943 944
			continue;

945
		if (rx_h->context == RX_HANDLER_SYNC) {
946
			rx_h->fn(mvm, rxb);
947
			return;
948
		}
949 950 951 952

		entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
		/* we can't do much... */
		if (!entry)
953
			return;
954 955 956 957 958

		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;
959
		entry->context = rx_h->context;
960 961 962 963 964
		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;
J
Johannes Berg 已提交
965 966 967
	}
}

968 969 970 971 972 973
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);
974
	u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
975

976
	if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
977
		iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
978
	else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD))
979 980 981 982 983 984 985 986 987 988 989
		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);
990
	u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
991

992
	if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
993
		iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0);
994 995
	else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
					 RX_QUEUES_NOTIFICATION)))
996
		iwl_mvm_rx_queue_notif(mvm, rxb, 0);
997
	else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))
998
		iwl_mvm_rx_frame_release(mvm, napi, rxb, 0);
999 1000 1001 1002
	else
		iwl_mvm_rx_common(mvm, rxb, pkt);
}

1003
void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
J
Johannes Berg 已提交
1004
{
1005
	int q;
J
Johannes Berg 已提交
1006

1007
	if (WARN_ON_ONCE(!mq))
J
Johannes Berg 已提交
1008 1009
		return;

1010 1011 1012
	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,
1013
					    "mac80211 %d already stopped\n", q);
1014 1015 1016 1017 1018
			continue;
		}

		ieee80211_stop_queue(mvm->hw, q);
	}
J
Johannes Berg 已提交
1019 1020
}

1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032
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);
}

1033
static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
J
Johannes Berg 已提交
1034 1035
{
	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1036
	unsigned long mq;
J
Johannes Berg 已提交
1037

1038
	spin_lock_bh(&mvm->queue_info_lock);
1039
	mq = mvm->queue_info[hw_queue].hw_queue_to_mac80211;
1040
	spin_unlock_bh(&mvm->queue_info_lock);
J
Johannes Berg 已提交
1041

1042 1043 1044 1045 1046 1047 1048
	iwl_mvm_stop_mac_queues(mvm, mq);
}

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

1049
	if (WARN_ON_ONCE(!mq))
J
Johannes Berg 已提交
1050 1051
		return;

1052 1053 1054
	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,
1055
					    "mac80211 %d still stopped\n", q);
1056 1057 1058 1059 1060
			continue;
		}

		ieee80211_wake_queue(mvm->hw, q);
	}
J
Johannes Berg 已提交
1061 1062
}

1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074
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);
	mq = mvm->queue_info[hw_queue].hw_queue_to_mac80211;
	spin_unlock_bh(&mvm->queue_info_lock);

	iwl_mvm_start_mac_queues(mvm, mq);
}

1075 1076 1077 1078 1079 1080 1081 1082 1083 1084
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);

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

1085
static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
J
Johannes Berg 已提交
1086 1087
{
	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1088
	bool calibrating = ACCESS_ONCE(mvm->calibrating);
J
Johannes Berg 已提交
1089 1090 1091 1092 1093 1094

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

1095
	wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
1096

1097 1098 1099 1100 1101 1102 1103 1104 1105
	/* 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.
	 */
	return state && (mvm->cur_ucode != IWL_UCODE_INIT || calibrating);
J
Johannes Berg 已提交
1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117
}

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);
}

1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133
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);
}

1134 1135 1136
static void iwl_mvm_fw_error_dump_wk(struct work_struct *work)
{
	struct iwl_mvm *mvm =
1137
		container_of(work, struct iwl_mvm, fw_dump_wk.work);
1138

1139 1140 1141
	if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT))
		return;

1142
	mutex_lock(&mvm->mutex);
1143 1144 1145 1146 1147 1148 1149 1150 1151 1152

	/* stop recording */
	if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000) {
		iwl_set_bits_prph(mvm->trans, MON_BUFF_SAMPLE_CTL, 0x100);
	} else {
		iwl_write_prph(mvm->trans, DBGC_IN_SAMPLE, 0);
		/* wait before we collect the data till the DBGC stop */
		udelay(100);
	}

1153
	iwl_mvm_fw_error_dump(mvm);
1154 1155 1156

	/* start recording again if the firmware is not crashed */
	WARN_ON_ONCE((!test_bit(STATUS_FW_ERROR, &mvm->trans->status)) &&
E
Emmanuel Grumbach 已提交
1157 1158
		     mvm->fw->dbg_dest_tlv &&
		     iwl_mvm_start_fw_dbg_conf(mvm, mvm->fw_dbg_conf));
1159

1160
	mutex_unlock(&mvm->mutex);
1161 1162

	iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
1163 1164
}

1165
void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
J
Johannes Berg 已提交
1166 1167 1168
{
	iwl_abort_notification_waits(&mvm->notif_wait);

1169 1170 1171 1172 1173 1174 1175 1176 1177 1178
	/*
	 * 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.
	 */
1179
	iwl_mvm_report_scan_aborted(mvm);
1180

J
Johannes Berg 已提交
1181 1182 1183 1184 1185 1186
	/*
	 * 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.
	 */
1187
	if (!mvm->restart_fw && fw_error) {
1188 1189
		iwl_mvm_fw_dbg_collect_desc(mvm, &iwl_mvm_dump_desc_assert,
					    NULL);
1190 1191
	} else if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART,
				    &mvm->status)) {
1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214
		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);
1215 1216
	} else if (mvm->cur_ucode == IWL_UCODE_REGULAR &&
		   mvm->hw_registered) {
1217 1218 1219
		/* don't let the transport/FW power down */
		iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);

1220
		if (fw_error && mvm->restart_fw > 0)
1221
			mvm->restart_fw--;
J
Johannes Berg 已提交
1222 1223 1224 1225
		ieee80211_restart_hw(mvm->hw);
	}
}

1226 1227 1228 1229 1230
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);
1231

1232
	iwl_mvm_nic_restart(mvm, true);
1233 1234
}

J
Johannes Berg 已提交
1235 1236
static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
{
1237 1238
	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);

J
Johannes Berg 已提交
1239
	WARN_ON(1);
1240
	iwl_mvm_nic_restart(mvm, true);
J
Johannes Berg 已提交
1241 1242
}

1243 1244
struct iwl_d0i3_iter_data {
	struct iwl_mvm *mvm;
1245
	struct ieee80211_vif *connected_vif;
1246 1247
	u8 ap_sta_id;
	u8 vif_count;
1248 1249
	u8 offloading_tid;
	bool disable_offloading;
1250 1251
};

1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264
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 ||
		    mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT))
		return false;

1265 1266
	mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
	if (!mvmsta)
1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 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.
		 */
		if (iwl_mvm_tid_queued(tid_data))
			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;
}

1302 1303 1304
static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
					struct ieee80211_vif *vif)
{
1305 1306 1307
	struct iwl_d0i3_iter_data *data = _data;
	struct iwl_mvm *mvm = data->mvm;
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1308 1309 1310 1311 1312 1313 1314
	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;

1315 1316 1317 1318 1319 1320 1321 1322
	/*
	 * 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;

1323
	iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
1324 1325
	iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading,
				   false, flags);
1326 1327 1328 1329 1330 1331 1332

	/*
	 * 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).
	 */
1333 1334
	data->ap_sta_id = mvmvif->ap_sta_id;
	data->vif_count++;
1335 1336 1337 1338 1339 1340

	/*
	 * 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;
1341 1342
}

1343
static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
1344
				    struct iwl_wowlan_config_cmd *cmd,
1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359
				    struct iwl_d0i3_iter_data *iter_data)
{
	struct ieee80211_sta *ap_sta;
	struct iwl_mvm_sta *mvm_ap_sta;

	if (iter_data->ap_sta_id == IWL_MVM_STATION_COUNT)
		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);
1360
	cmd->is_11n_connection = ap_sta->ht_cap.ht_supported;
1361
	cmd->offloading_tid = iter_data->offloading_tid;
S
Sara Sharon 已提交
1362
	cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING |
1363
		ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON;
1364 1365 1366 1367
	/*
	 * The d0i3 uCode takes care of the nonqos counters,
	 * so configure only the qos seq ones.
	 */
1368
	iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd);
1369 1370 1371
out:
	rcu_read_unlock();
}
1372 1373

int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
E
Eliad Peller 已提交
1374 1375
{
	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1376
	u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1377
	int ret;
1378 1379 1380
	struct iwl_d0i3_iter_data d0i3_iter_data = {
		.mvm = mvm,
	};
1381 1382 1383
	struct iwl_wowlan_config_cmd wowlan_config_cmd = {
		.wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
					     IWL_WOWLAN_WAKEUP_BEACON_MISS |
1384
					     IWL_WOWLAN_WAKEUP_LINK_CHANGE),
1385
	};
1386 1387
	struct iwl_d3_manager_config d3_cfg_cmd = {
		.min_sleep_time = cpu_to_le32(1000),
1388
		.wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR),
1389
	};
E
Eliad Peller 已提交
1390 1391

	IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
1392

1393 1394 1395
	if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR))
		return -EINVAL;

1396 1397
	set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);

1398 1399 1400 1401 1402 1403 1404 1405 1406
	/*
	 * 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);
1407
		wake_up(&mvm->d0i3_exit_waitq);
1408 1409 1410
		return 1;
	}

1411 1412 1413
	ieee80211_iterate_active_interfaces_atomic(mvm->hw,
						   IEEE80211_IFACE_ITER_NORMAL,
						   iwl_mvm_enter_d0i3_iterator,
1414 1415 1416
						   &d0i3_iter_data);
	if (d0i3_iter_data.vif_count == 1) {
		mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
1417
		mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
1418 1419 1420
	} else {
		WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
		mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1421
		mvm->d0i3_offloading = false;
1422
	}
1423

1424 1425 1426
	/* make sure we have no running tx while configuring the seqno */
	synchronize_net();

1427 1428 1429 1430 1431
	/* Flush the hw queues, in case something got queued during entry */
	ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm), flags);
	if (ret)
		return ret;

1432 1433
	/* configure wowlan configuration only if needed */
	if (mvm->d0i3_ap_sta_id != IWL_MVM_STATION_COUNT) {
1434 1435 1436 1437 1438 1439
		/* 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);

1440 1441 1442 1443
		iwl_mvm_wowlan_config_key_params(mvm,
						 d0i3_iter_data.connected_vif,
						 true, flags);

1444 1445 1446 1447 1448 1449 1450 1451 1452
		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;
	}
1453

1454 1455 1456
	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
1457 1458
}

1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472
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);
}

1473
struct iwl_mvm_d0i3_exit_work_iter_data {
1474
	struct iwl_mvm *mvm;
1475
	struct iwl_wowlan_status *status;
1476 1477 1478
	u32 wakeup_reasons;
};

1479 1480
static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac,
					struct ieee80211_vif *vif)
1481
{
1482
	struct iwl_mvm_d0i3_exit_work_iter_data *data = _data;
1483
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1484
	u32 reasons = data->wakeup_reasons;
1485

1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496
	/* 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);
1497 1498
}

1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526
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);

	if (mvm->d0i3_ap_sta_id == IWL_MVM_STATION_COUNT)
		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 */
1527
		mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta);
1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554
		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);
	mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
	if (wake_queues)
		ieee80211_wake_queues(mvm->hw);

	spin_unlock_bh(&mvm->d0i3_tx_lock);
}

1555 1556 1557 1558 1559
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
1560
		.flags = CMD_HIGH_PRIO | CMD_WANT_SKB,
1561
	};
1562 1563 1564 1565
	struct iwl_mvm_d0i3_exit_work_iter_data iter_data = {
		.mvm = mvm,
	};

1566
	struct iwl_wowlan_status *status;
1567
	int ret;
1568
	u32 wakeup_reasons = 0;
1569
	__le16 *qos_seq = NULL;
1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580

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

	if (!get_status_cmd.resp_pkt)
		goto out;

	status = (void *)get_status_cmd.resp_pkt->data;
	wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
1581
	qos_seq = status->qos_seq_ctr;
1582 1583 1584

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

1585 1586 1587 1588 1589 1590
	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);
1591
out:
1592
	iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
1593

1594 1595 1596
	IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n",
		       wakeup_reasons);

1597 1598 1599 1600
	/* qos_seq might point inside resp_pkt, so free it only now */
	if (get_status_cmd.resp_pkt)
		iwl_free_resp(&get_status_cmd);

1601 1602 1603
	/* the FW might have updated the regdomain */
	iwl_mvm_update_changed_regdom(mvm);

1604
	iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
1605 1606 1607
	mutex_unlock(&mvm->mutex);
}

1608
int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
E
Eliad Peller 已提交
1609
{
1610 1611
	u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
		    CMD_WAKE_UP_TRANS;
1612
	int ret;
E
Eliad Peller 已提交
1613 1614

	IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
1615

1616 1617 1618
	if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR))
		return -EINVAL;

1619 1620 1621 1622 1623 1624 1625 1626 1627
	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);

1628 1629
	ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
	if (ret)
1630
		goto out;
1631 1632 1633 1634 1635

	ieee80211_iterate_active_interfaces_atomic(mvm->hw,
						   IEEE80211_IFACE_ITER_NORMAL,
						   iwl_mvm_exit_d0i3_iterator,
						   mvm);
1636 1637 1638
out:
	schedule_work(&mvm->d0i3_exit_work);
	return ret;
E
Eliad Peller 已提交
1639 1640
}

1641
int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
1642 1643 1644 1645 1646 1647 1648
{
	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);
}

1649 1650
#define IWL_MVM_COMMON_OPS					\
	/* these could be differentiated */			\
1651
	.async_cb = iwl_mvm_async_cb,				\
1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664
	.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
1665
static const struct iwl_op_mode_ops iwl_mvm_ops = {
1666 1667 1668 1669 1670 1671 1672 1673 1674 1675
	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);
1676
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1677
	u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1678

1679
	if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)))
1680
		iwl_mvm_rx_frame_release(mvm, napi, rxb, queue);
1681 1682
	else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
					 RX_QUEUES_NOTIFICATION)))
1683
		iwl_mvm_rx_queue_notif(mvm, rxb, queue);
1684
	else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1685
		iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue);
1686 1687 1688 1689 1690 1691
}

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
1692
};