Release 4.9 drivers/net/wireless/intel/iwlwifi/mvm/ops.c

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

#include "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"
#include "fw-dbg.h"
#include "fw-api.h"
#include "fw-api-scan.h"


#define DRV_DESCRIPTION	"The new Intel(R) wireless AGN driver for Linux"

MODULE_DESCRIPTION(DRV_DESCRIPTION);
MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
MODULE_LICENSE("GPL");


static const struct iwl_op_mode_ops iwl_mvm_ops;

static const struct iwl_op_mode_ops iwl_mvm_ops_mq;


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

module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, 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");
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");

/*
 * 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;
}
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module_init(iwl_mvm_init);



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



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

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

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

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

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

	/*
         * TODO: Bits 7-8 of CSR in 8000 HW family 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;

	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);

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

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

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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
 */

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


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

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

/*
 * Handlers for fw notifications
 * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME
 * This list should be in order of frequency for performance purposes.
 *
 * The handler can be one from three contexts, see &iwl_rx_handler_context
 */

static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
	RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, RX_HANDLER_SYNC),
	RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, RX_HANDLER_SYNC),

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

	RX_HANDLER(BA_WINDOW_STATUS_NOTIFICATION_ID,
		   iwl_mvm_window_status_notif, RX_HANDLER_SYNC),

	RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif,
		   RX_HANDLER_SYNC),
	RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc,
		   RX_HANDLER_ASYNC_LOCKED),

	RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, RX_HANDLER_SYNC),

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

	RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif,
		   RX_HANDLER_SYNC),

	RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
		   RX_HANDLER_SYNC),

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

	RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif,
		   RX_HANDLER_ASYNC_LOCKED),
	RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif,
		   RX_HANDLER_SYNC),
	RX_HANDLER(TOF_NOTIFICATION, iwl_mvm_tof_resp_handler,
		   RX_HANDLER_ASYNC_LOCKED),
	RX_HANDLER_GRP(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF,
		       iwl_mvm_rx_stored_beacon_notif, RX_HANDLER_SYNC),
	RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF,
		       iwl_mvm_mu_mimo_grp_notif, RX_HANDLER_SYNC),
};

#undef RX_HANDLER

#undef RX_HANDLER_GRP

/* Please keep this array *SORTED* by hex value.
 * Access is done through binary search
 */

static const struct iwl_hcmd_names iwl_mvm_legacy_names[] = {
	HCMD_NAME(MVM_ALIVE),
	HCMD_NAME(REPLY_ERROR),
	HCMD_NAME(ECHO_CMD),
	HCMD_NAME(INIT_COMPLETE_NOTIF),
	HCMD_NAME(PHY_CONTEXT_CMD),
	HCMD_NAME(DBG_CFG),
	HCMD_NAME(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),
	HCMD_NAME(BA_WINDOW_STATUS_NOTIFICATION_ID),
	HCMD_NAME(ADD_STA_KEY),
	HCMD_NAME(ADD_STA),
	HCMD_NAME(REMOVE_STA),
	HCMD_NAME(FW_GET_ITEM_CMD),
	HCMD_NAME(TX_CMD),
	HCMD_NAME(SCD_QUEUE_CFG),
	HCMD_NAME(TXPATH_FLUSH),
	HCMD_NAME(MGMT_MCAST_KEY),
	HCMD_NAME(WEP_KEY),
	HCMD_NAME(SHARED_MEM_CFG),
	HCMD_NAME(TDLS_CHANNEL_SWITCH_CMD),
	HCMD_NAME(MAC_CONTEXT_CMD),
	HCMD_NAME(TIME_EVENT_CMD),
	HCMD_NAME(TIME_EVENT_NOTIFICATION),
	HCMD_NAME(BINDING_CONTEXT_CMD),
	HCMD_NAME(TIME_QUOTA_CMD),
	HCMD_NAME(NON_QOS_TX_COUNTER_CMD),
	HCMD_NAME(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),
	HCMD_NAME(PHY_DB_CMD),
	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),
	HCMD_NAME(RSS_CONFIG_CMD),
	HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC),
	HCMD_NAME(REPLY_RX_PHY_CMD),
	HCMD_NAME(REPLY_RX_MPDU_CMD),
	HCMD_NAME(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),
};

/* 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),
};

/* 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),
	HCMD_NAME(CHANNEL_SWITCH_NOA_NOTIF),
};

/* Please keep this array *SORTED* by hex value.
 * Access is done through binary search
 */

static const struct iwl_hcmd_names iwl_mvm_phy_names[] = {
	HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE),
	HCMD_NAME(CTDP_CONFIG_CMD),
	HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD),
	HCMD_NAME(CT_KILL_NOTIFICATION),
	HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE),
};

/* Please keep this array *SORTED* by hex value.
 * Access is done through binary search
 */

static const struct iwl_hcmd_names iwl_mvm_data_path_names[] = {
	HCMD_NAME(UPDATE_MU_GROUPS_CMD),
	HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD),
	HCMD_NAME(MU_GROUP_MGMT_NOTIF),
	HCMD_NAME(RX_QUEUES_NOTIFICATION),
};

/* Please keep this array *SORTED* by hex value.
 * Access is done through binary search
 */

static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = {
	HCMD_NAME(STORED_BEACON_NTF),
};


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

/* this forward declaration can avoid to export the function */
static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
static void iwl_mvm_d0i3_exit_work(struct work_struct *wk);



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;
}

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static void iwl_mvm_fw_error_dump_wk(struct work_struct *work);



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);
}

Contributors
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andrei otcheretianski
andrei otcheretianski
106
100.00%
1
100.00%
Total
106
100.00%
1
100.00%


static struct iwl_op_mode *

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

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

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

	if (cfg->max_rx_agg_size)
		hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size;

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

	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;

	if (iwl_mvm_has_new_rx_api(mvm)) {
		op_mode->ops = &iwl_mvm_ops_mq;
		trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_desc);
	} else {
		op_mode->ops = &iwl_mvm_ops;
		trans->rx_mpdu_cmd_hdr_size =
			sizeof(struct iwl_rx_mpdu_res_start);

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

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

	if (!iwl_mvm_is_dqa_supported(mvm)) {
		mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1;

		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;
		}
	} else {
		mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE;
		mvm->first_agg_queue = IWL_MVM_DQA_MIN_DATA_QUEUE;
		mvm->last_agg_queue = IWL_MVM_DQA_MAX_DATA_QUEUE;
	}
	mvm->sf_state = SF_UNINIT;
	mvm->cur_ucode = IWL_UCODE_INIT;
	mvm->drop_bcn_ap_mode = true;

	mutex_init(&mvm->mutex);
	mutex_init(&mvm->d0i3_suspend_mutex);
	spin_lock_init(&mvm->async_handlers_lock);
	INIT_LIST_HEAD(&mvm->time_event_list);
	INIT_LIST_HEAD(&mvm->aux_roc_te_list);
	INIT_LIST_HEAD(&mvm->async_handlers_list);
	spin_lock_init(&mvm->time_event_lock);
	spin_lock_init(&mvm->queue_info_lock);

	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);
	INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
	INIT_DELAYED_WORK(&mvm->fw_dump_wk, iwl_mvm_fw_error_dump_wk);
	INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
	INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk);
	INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk);

	spin_lock_init(&mvm->d0i3_tx_lock);
	spin_lock_init(&mvm->refs_lock);
	skb_queue_head_init(&mvm->d0i3_tx);
	init_waitqueue_head(&mvm->d0i3_exit_waitq);
	init_waitqueue_head(&mvm->rx_sync_waitq);

	atomic_set(&mvm->queue_sync_counter, 0);

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

	INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork);

	/*
         * 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);
	switch (iwlwifi_mod_params.amsdu_size) {
	case IWL_AMSDU_DEF:
	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;
	}

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

	trans->wide_cmd_header = true;
	trans_cfg.bc_table_dword = true;

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

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

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

	trans_cfg.sdio_adma_addr = fw->sdio_adma_addr;
	trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD;

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

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

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

	trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
	trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv;
	trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num;
	memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv,
	       sizeof(trans->dbg_conf_tlv));
	trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv;

	/* 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);

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

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

	mutex_lock(&mvm->mutex);
	iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE);
	err = iwl_run_init_mvm_ucode(mvm, true);
	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;
	}

	scan_size = iwl_mvm_scan_size(mvm);

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

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

	err = iwl_mvm_mac_setup_register(mvm);
	if (err)
		goto out_free;

	min_backoff = calc_min_backoff(trans, cfg);
	iwl_mvm_thermal_initialize(mvm, min_backoff);

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

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

	/* 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);

	iwl_mvm_tof_init(mvm);

	return op_mode;

 out_unregister:
	ieee80211_unregister_hw(mvm->hw);
	iwl_mvm_leds_exit(mvm);
	iwl_mvm_thermal_exit(mvm);
 out_free:
	flush_delayed_work(&mvm->fw_dump_wk);
	iwl_phy_db_free(mvm->phy_db);
	kfree(mvm->scan_cmd);
	iwl_trans_op_mode_leave(trans);

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

Contributors
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johannes berg
johannes berg
591
47.97%
4
6.35%
liad kaufman
liad kaufman
134
10.88%
8
12.70%
emmanuel grumbach
emmanuel grumbach
133
10.80%
10
15.87%
eliad peller
eliad peller
48
3.90%
6
9.52%
eran harary
eran harary
42
3.41%
4
6.35%
eytan lifshitz
eytan lifshitz
40
3.25%
1
1.59%
sara sharon
sara sharon
40
3.25%
4
6.35%
arik nemtsov
arik nemtsov
40
3.25%
3
4.76%
andrei otcheretianski
andrei otcheretianski
24
1.95%
3
4.76%
chaya rachel ivgi
chaya rachel ivgi
23
1.87%
3
4.76%
luciano coelho
luciano coelho
23
1.87%
4
6.35%
gregory greenman
gregory greenman
19
1.54%
2
3.17%
matti gottlieb
matti gottlieb
16
1.30%
1
1.59%
oren givon
oren givon
14
1.14%
1
1.59%
sharon dvir
sharon dvir
11
0.89%
1
1.59%
ariej marjieh
ariej marjieh
8
0.65%
1
1.59%
haim dreyfuss
haim dreyfuss
7
0.57%
1
1.59%
lilach edelstein
lilach edelstein
6
0.49%
1
1.59%
david spinadel
david spinadel
5
0.41%
2
3.17%
ido yariv
ido yariv
3
0.24%
1
1.59%
aviya erenfeld
aviya erenfeld
3
0.24%
1
1.59%
eyal shapira
eyal shapira
2
0.16%
1
1.59%
Total
1232
100.00%
63
100.00%



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;

	/* 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);

	iwl_mvm_leds_exit(mvm);

	iwl_mvm_thermal_exit(mvm);

	ieee80211_unregister_hw(mvm->hw);

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

#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
	kfree(mvm->d3_resume_sram);
#endif

	iwl_trans_op_mode_leave(mvm->trans);

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

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

	iwl_mvm_tof_clean(mvm);

	mutex_destroy(&mvm->mutex);
	mutex_destroy(&mvm->d0i3_suspend_mutex);

	ieee80211_free_hw(mvm->hw);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
johannes berg
johannes berg
120
68.18%
2
18.18%
emmanuel grumbach
emmanuel grumbach
20
11.36%
2
18.18%
luciano coelho
luciano coelho
15
8.52%
1
9.09%
eliad peller
eliad peller
9
5.11%
1
9.09%
gregory greenman
gregory greenman
5
2.84%
1
9.09%
eytan lifshitz
eytan lifshitz
4
2.27%
1
9.09%
eran harary
eran harary
1
0.57%
1
9.09%
chaya rachel ivgi
chaya rachel ivgi
1
0.57%
1
9.09%
arik nemtsov
arik nemtsov
1
0.57%
1
9.09%
Total
176
100.00%
11
100.00%


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



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

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

Contributors
Person
Tokens
Prop
Commits
CommitProp
johannes berg
johannes berg
67
100.00%
1
100.00%
Total
67
100.00%
1
100.00%



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

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

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

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

Contributors
Person
Tokens
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Commits
CommitProp
johannes berg
johannes berg
116
80.00%
2
66.67%
chaya rachel ivgi
chaya rachel ivgi
29
20.00%
1
33.33%
Total
145
100.00%
3
100.00%



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;

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

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

Contributors
Person
Tokens
Prop
Commits
CommitProp
emmanuel grumbach
emmanuel grumbach
141
84.94%
1
33.33%
sara sharon
sara sharon
22
13.25%
1
33.33%
johannes berg
johannes berg
3
1.81%
1
33.33%
Total
166
100.00%
3
100.00%



static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
			      struct iwl_rx_cmd_buffer *rxb,
			      struct iwl_rx_packet *pkt)
{
	int i;

	iwl_mvm_rx_check_trigger(mvm, pkt);

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

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

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

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

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

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

Contributors
Person
Tokens
Prop
Commits
CommitProp
johannes berg
johannes berg
189
84.38%
5
55.56%
emmanuel grumbach
emmanuel grumbach
15
6.70%
2
22.22%
chaya rachel ivgi
chaya rachel ivgi
11
4.91%
1
11.11%
avraham stern
avraham stern
9
4.02%
1
11.11%
Total
224
100.00%
9
100.00%



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

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

Contributors
Person
Tokens
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CommitProp
johannes berg
johannes berg
111
100.00%
2
100.00%
Total
111
100.00%
2
100.00%



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

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

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CommitProp
johannes berg
johannes berg
125
88.65%
4
80.00%
sara sharon
sara sharon
16
11.35%
1
20.00%
Total
141
100.00%
5
100.00%



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

	if (WARN_ON_ONCE(!mq))
		return;

	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,
					    "mac80211 %d already stopped\n", q);
			continue;
		}

		ieee80211_stop_queue(mvm->hw, q);
	}
}

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johannes berg
johannes berg
47
65.28%
2
50.00%
liad kaufman
liad kaufman
25
34.72%
2
50.00%
Total
72
100.00%
4
100.00%



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);
}

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emmanuel grumbach
emmanuel grumbach
37
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1
100.00%
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37
100.00%
1
100.00%



static void iwl_mvm_stop_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_stop_mac_queues(mvm, mq);
}

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liad kaufman
liad kaufman
36
58.06%
2
66.67%
johannes berg
johannes berg
26
41.94%
1
33.33%
Total
62
100.00%
3
100.00%



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

	if (WARN_ON_ONCE(!mq))
		return;

	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,
					    "mac80211 %d still stopped\n", q);
			continue;
		}

		ieee80211_wake_queue(mvm->hw, q);
	}
}

Contributors
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johannes berg
johannes berg
40
55.56%
2
50.00%
liad kaufman
liad kaufman
32
44.44%
2
50.00%
Total
72
100.00%
4
100.00%



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);
}

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liad kaufman
liad kaufman
62
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1
100.00%
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62
100.00%
1
100.00%



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));
}

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eytan lifshitz
eytan lifshitz
52
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1
100.00%
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52
100.00%
1
100.00%



static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
{
	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
	bool calibrating = ACCESS_ONCE(mvm->calibrating);

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

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

	/* 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);
}

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johannes berg
johannes berg
68
68.00%
2
50.00%
emmanuel grumbach
emmanuel grumbach
28
28.00%
1
25.00%
eytan lifshitz
eytan lifshitz
4
4.00%
1
25.00%
Total
100
100.00%
4
100.00%



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);
}

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johannes berg
johannes berg
61
100.00%
1
100.00%
Total
61
100.00%
1
100.00%


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);
}

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johannes berg
johannes berg
56
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1
100.00%
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56
100.00%
1
100.00%



static void iwl_mvm_fw_error_dump_wk(struct work_struct *work)
{
	struct iwl_mvm *mvm =
		container_of(work, struct iwl_mvm, fw_dump_wk.work);

	if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT))
		return;

	mutex_lock(&mvm->mutex);

	/* 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);
	}

	iwl_mvm_fw_error_dump(mvm);

	/* start recording again if the firmware is not crashed */
	WARN_ON_ONCE((!test_bit(STATUS_FW_ERROR, &mvm->trans->status)) &&
		     mvm->fw->dbg_dest_tlv &&
		     iwl_mvm_start_fw_dbg_conf(mvm, mvm->fw_dbg_conf));

	mutex_unlock(&mvm->mutex);

	iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
}

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emmanuel grumbach
emmanuel grumbach
127
88.19%
4
80.00%
liad kaufman
liad kaufman
17
11.81%
1
20.00%
Total
144
100.00%
5
100.00%



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

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

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

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

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

		reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
		if (!reprobe) {
			module_put(THIS_MODULE);
			return;
		}
		reprobe->dev = mvm->trans->dev;
		INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
		schedule_work(&reprobe->work);
	} else if (mvm->cur_ucode == IWL_UCODE_REGULAR) {
		/* don't let the transport/FW power down */
		iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);

		if (fw_error && mvm->restart_fw > 0)
			mvm->restart_fw--;
		ieee80211_restart_hw(mvm->hw);
	}
}

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johannes berg
johannes berg
133
70.00%
2
16.67%
luciano coelho
luciano coelho
21
11.05%
2
16.67%
eran harary
eran harary
13
6.84%
1
8.33%
emmanuel grumbach
emmanuel grumbach
8
4.21%
3
25.00%
eliad peller
eliad peller
8
4.21%
1
8.33%
david spinadel
david spinadel
6
3.16%
2
16.67%
oren givon
oren givon
1
0.53%
1
8.33%
Total
190
100.00%
12
100.00%



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);

	iwl_mvm_nic_restart(mvm, true);
}

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emmanuel grumbach
emmanuel grumbach
31
93.94%
1
50.00%
luciano coelho
luciano coelho
2
6.06%
1
50.00%
Total
33
100.00%
2
100.00%



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

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

Contributors
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johannes berg
johannes berg
16
48.48%
1
33.33%
emmanuel grumbach
emmanuel grumbach
15
45.45%
1
33.33%
luciano coelho
luciano coelho
2
6.06%
1
33.33%
Total
33
100.00%
3
100.00%


struct iwl_d0i3_iter_data {
	
struct iwl_mvm *mvm;
	
struct ieee80211_vif *connected_vif;
	
u8 ap_sta_id;
	
u8 vif_count;
	
u8 offloading_tid;
	
bool disable_offloading;
};



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;

	mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
	if (!mvmsta)
		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;
}

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arik nemtsov
arik nemtsov
171
97.16%
1
50.00%
sara sharon
sara sharon
5
2.84%
1
50.00%
Total
176
100.00%
2
100.00%



static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
					struct ieee80211_vif *vif)
{
	struct iwl_d0i3_iter_data *data = _data;
	struct iwl_mvm *mvm = data->mvm;
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	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;

	/*
         * 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;

	iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
	iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading,
				   false, flags);

	/*
         * 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).
         */
	data->ap_sta_id = mvmvif->ap_sta_id;
	data->vif_count++;

	/*
         * 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;
}

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eliad peller
eliad peller
126
86.30%
4
66.67%
arik nemtsov
arik nemtsov
18
12.33%
1
16.67%
sara sharon
sara sharon
2
1.37%
1
16.67%
Total
146
100.00%
6
100.00%



static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
				    struct iwl_wowlan_config_cmd *cmd,
				    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);
	cmd->is_11n_connection = ap_sta->ht_cap.ht_supported;
	cmd->offloading_tid = iter_data->offloading_tid;
	cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING |
		ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON;
	/*
         * The d0i3 uCode takes care of the nonqos counters,
         * so configure only the qos seq ones.
         */
	iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd);
out:
	rcu_read_unlock();
}

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eliad peller
eliad peller
96
82.05%
1
20.00%
sara sharon
sara sharon
12
10.26%
2
40.00%
arik nemtsov
arik nemtsov
8
6.84%
1
20.00%
emmanuel grumbach
emmanuel grumbach
1
0.85%
1
20.00%
Total
117
100.00%
5
100.00%



int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
{
	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
	u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
	int ret;
	struct iwl_d0i3_iter_data d0i3_iter_data = {
		.mvm = mvm,
        };
	struct iwl_wowlan_config_cmd wowlan_config_cmd = {
		.wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
					     IWL_WOWLAN_WAKEUP_BEACON_MISS |
					     IWL_WOWLAN_WAKEUP_LINK_CHANGE),
        };
	struct iwl_d3_manager_config d3_cfg_cmd = {
		.min_sleep_time = cpu_to_le32(1000),
		.wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR),
        };

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

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

	set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);

	/*
         * 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);
		wake_up(&mvm->d0i3_exit_waitq);
		return 1;
	}

	ieee80211_iterate_active_interfaces_atomic(mvm->hw,
						   IEEE80211_IFACE_ITER_NORMAL,
						   iwl_mvm_enter_d0i3_iterator,
						   &d0i3_iter_data);
	if (d0i3_iter_data.vif_count == 1) {
		mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
		mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
	} else {
		WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
		mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
		mvm->d0i3_offloading = false;
	}

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

	/* 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;

	/* configure wowlan configuration only if needed */
	if (mvm->d0i3_ap_sta_id != IWL_MVM_STATION_COUNT) {
		/* 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);

		iwl_mvm_wowlan_config_key_params(mvm,
						 d0i3_iter_data.connected_vif,
						 true, flags);

		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;
	}

	return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
				    flags | CMD_MAKE_TRANS_IDLE,
				    sizeof(d3_cfg_cmd), &d3_cfg_cmd);
}

Contributors
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eliad peller
eliad peller
234
66.48%
11
64.71%
arik nemtsov
arik nemtsov
66
18.75%
2
11.76%
sara sharon
sara sharon
25
7.10%
1
5.88%
luciano coelho
luciano coelho
22
6.25%
1
5.88%
emmanuel grumbach
emmanuel grumbach
5
1.42%
2
11.76%
Total
352
100.00%
17
100.00%



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);
}

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struct iwl_mvm_d0i3_exit_work_iter_data {
	
struct iwl_mvm *mvm;
	
struct iwl_wowlan_status *status;
	
u32 wakeup_reasons;
};



static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac,
					struct ieee80211_vif *vif)
{
	struct iwl_mvm_d0i3_exit_work_iter_data *data = _data;
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	u32 reasons = data->wakeup_reasons;

	/* 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);
}

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david spinadel
david spinadel
17
15.04%
1
25.00%
emmanuel grumbach
emmanuel grumbach
5
4.42%
1
25.00%
Total
113
100.00%
4
100.00%



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 */
		mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta);
		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);
}

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3
1.12%
1
50.00%
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267
100.00%
2
100.00%



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,
		.flags = CMD_HIGH_PRIO | CMD_WANT_SKB,
        };
	struct iwl_mvm_d0i3_exit_work_iter_data iter_data = {
		.mvm = mvm,
        };

	struct iwl_wowlan_status *status;
	int ret;
	u32 wakeup_reasons = 0;
	__le16 *qos_seq = NULL;

	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);
	qos_seq = status->qos_seq_ctr;

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

	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);
out:
	iwl_mvm_d0i3_enable_tx(mvm, qos_seq);

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

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

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

	iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
	mutex_unlock(&mvm->mutex);
}

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eliad peller
eliad peller
192
86.10%
5
55.56%
arik nemtsov
arik nemtsov
19
8.52%
1
11.11%
jonathan doron
jonathan doron
6
2.69%
1
11.11%
david spinadel
david spinadel
5
2.24%
1
11.11%
emmanuel grumbach
emmanuel grumbach
1
0.45%
1
11.11%
Total
223
100.00%
9
100.00%



int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
{
	u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
		    CMD_WAKE_UP_TRANS;
	int ret;

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

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

	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);

	ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
	if (ret)
		goto out;

	ieee80211_iterate_active_interfaces_atomic(mvm->hw,
						   IEEE80211_IFACE_ITER_NORMAL,
						   iwl_mvm_exit_d0i3_iterator,
						   mvm);
out:
	schedule_work(&mvm->d0i3_exit_work);
	return ret;
}

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22
14.47%
1
16.67%
Total
152
100.00%
6
100.00%



int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
{
	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);
}

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#define IWL_MVM_COMMON_OPS					\
	/* these could be differentiated */			\
	.async_cb = iwl_mvm_async_cb,                           \
        .queue_full = iwl_mvm_stop_sw_queue,                    \
        .queue_not_full = iwl_mvm_wake_sw_queue,                \
        .hw_rf_kill = iwl_mvm_set_hw_rfkill_state,              \
        .free_skb = iwl_mvm_free_skb,                           \
        .nic_error = iwl_mvm_nic_error,                         \
        .cmd_queue_full = iwl_mvm_cmd_queue_full,               \
        .nic_config = iwl_mvm_nic_config,                       \
        .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


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



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

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

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3
42.86%
Total
138
100.00%
7
100.00%


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,
};
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eliad peller
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15.75%
20
10.58%
emmanuel grumbach
emmanuel grumbach
686
9.96%
36
19.05%
arik nemtsov
arik nemtsov
645
9.36%
8
4.23%
liad kaufman
liad kaufman
322
4.67%
12
6.35%
sharon dvir
sharon dvir
288
4.18%
1
0.53%
sara sharon
sara sharon
279
4.05%
17
8.99%
chaya rachel ivgi
chaya rachel ivgi
149
2.16%
8
4.23%
andrei otcheretianski
andrei otcheretianski
135
1.96%
3
1.59%
eytan lifshitz
eytan lifshitz
103
1.49%
2
1.06%
luciano coelho
luciano coelho
102
1.48%
11
5.82%
david spinadel
david spinadel
89
1.29%
7
3.70%
ido yariv
ido yariv
67
0.97%
1
0.53%
eran harary
eran harary
65
0.94%
6
3.17%
aviya erenfeld
aviya erenfeld
42
0.61%
3
1.59%
avraham stern
avraham stern
36
0.52%
2
1.06%
gregory greenman
gregory greenman
32
0.46%
2
1.06%
golan ben ami
golan ben ami
30
0.44%
3
1.59%
matti gottlieb
matti gottlieb
28
0.41%
5
2.65%
alexander bondar
alexander bondar
21
0.30%
3
1.59%
oren givon
oren givon
15
0.22%
2
1.06%
hila gonen
hila gonen
15
0.22%
2
1.06%
ariej marjieh
ariej marjieh
12
0.17%
1
0.53%
moshe harel
moshe harel
8
0.12%
1
0.53%
lilach edelstein
lilach edelstein
7
0.10%
2
1.06%
haim dreyfuss
haim dreyfuss
7
0.10%
1
0.53%
jonathan doron
jonathan doron
6
0.09%
1
0.53%
avri altman
avri altman
5
0.07%
2
1.06%
ilan peer
ilan peer
3
0.04%
1
0.53%
max stepanov
max stepanov
3
0.04%
1
0.53%
eyal shapira
eyal shapira
2
0.03%
1
0.53%
Total
6890
100.00%
189
100.00%
  
Directory: drivers/net/wireless/intel/iwlwifi/mvm