ops.c 49.3 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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};
#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),
	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[] = {
	HCMD_NAME(UPDATE_MU_GROUPS_CMD),
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	HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD),
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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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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),
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	[SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names),
469
	[MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names),
470
	[PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names),
471
	[DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names),
472
	[PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names),
473 474
};

J
Johannes Berg 已提交
475 476
/* this forward declaration can avoid to export the function */
static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
477
static void iwl_mvm_d0i3_exit_work(struct work_struct *wk);
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478

479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495
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;
}

496 497
static void iwl_mvm_fw_error_dump_wk(struct work_struct *work);

498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520
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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521 522 523 524 525 526 527 528 529 530 531 532
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;
533
	u32 min_backoff;
J
Johannes Berg 已提交
534

535 536 537 538 539 540 541
	/*
	 * 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);

J
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542 543 544 545 546 547 548 549 550
	/********************************
	 * 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;

551 552 553
	if (cfg->max_rx_agg_size)
		hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size;

554 555 556
	if (cfg->max_tx_agg_size)
		hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size;

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557 558 559 560 561 562 563 564 565
	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;

566 567
	if (iwl_mvm_has_new_rx_api(mvm)) {
		op_mode->ops = &iwl_mvm_ops_mq;
568
		trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_desc);
569 570
	} else {
		op_mode->ops = &iwl_mvm_ops;
571 572
		trans->rx_mpdu_cmd_hdr_size =
			sizeof(struct iwl_rx_mpdu_res_start);
573 574 575 576 577

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

578 579
	mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0;

580
	mvm->aux_queue = 15;
581 582 583 584 585 586 587
	if (!iwl_mvm_is_dqa_supported(mvm)) {
		mvm->first_agg_queue = 16;
		mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1;
	} else {
		mvm->first_agg_queue = IWL_MVM_DQA_MIN_DATA_QUEUE;
		mvm->last_agg_queue = IWL_MVM_DQA_MAX_DATA_QUEUE;
	}
588 589 590 591
	if (mvm->cfg->base_params->num_of_queues == 16) {
		mvm->aux_queue = 11;
		mvm->first_agg_queue = 12;
	}
592
	mvm->sf_state = SF_UNINIT;
593
	mvm->cur_ucode = IWL_UCODE_INIT;
594
	mvm->drop_bcn_ap_mode = true;
595

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596
	mutex_init(&mvm->mutex);
597
	mutex_init(&mvm->d0i3_suspend_mutex);
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598 599
	spin_lock_init(&mvm->async_handlers_lock);
	INIT_LIST_HEAD(&mvm->time_event_list);
600
	INIT_LIST_HEAD(&mvm->aux_roc_te_list);
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601 602
	INIT_LIST_HEAD(&mvm->async_handlers_list);
	spin_lock_init(&mvm->time_event_lock);
603
	spin_lock_init(&mvm->queue_info_lock);
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Johannes Berg 已提交
604 605 606 607

	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);
608
	INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
609
	INIT_DELAYED_WORK(&mvm->fw_dump_wk, iwl_mvm_fw_error_dump_wk);
610
	INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
611
	INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk);
J
Johannes Berg 已提交
612

613
	spin_lock_init(&mvm->d0i3_tx_lock);
614
	spin_lock_init(&mvm->refs_lock);
615 616 617
	skb_queue_head_init(&mvm->d0i3_tx);
	init_waitqueue_head(&mvm->d0i3_exit_waitq);

618 619
	atomic_set(&mvm->queue_sync_counter, 0);

J
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620 621
	SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);

622 623
	INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork);

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624 625 626 627 628 629 630
	/*
	 * 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);
631
	switch (iwlwifi_mod_params.amsdu_size) {
632
	case IWL_AMSDU_DEF:
633 634 635 636 637 638 639 640 641 642 643 644 645 646
	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;
	}
647 648 649 650

	/* the hardware splits the A-MSDU */
	if (mvm->cfg->mq_rx_supported)
		trans_cfg.rx_buf_size = IWL_AMSDU_4K;
651 652
	trans_cfg.wide_cmd_header = fw_has_api(&mvm->fw->ucode_capa,
					       IWL_UCODE_TLV_API_WIDE_CMD_HDR);
J
Johannes Berg 已提交
653

654
	if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DW_BC_TABLE)
J
Johannes Berg 已提交
655 656
		trans_cfg.bc_table_dword = true;

657 658
	trans_cfg.command_groups = iwl_mvm_groups;
	trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups);
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Johannes Berg 已提交
659

660 661 662 663
	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;
664
	trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
665
	trans_cfg.scd_set_active = true;
J
Johannes Berg 已提交
666

667
	trans_cfg.sdio_adma_addr = fw->sdio_adma_addr;
668
	trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD;
669

670 671
	/* Set a short watchdog for the command queue */
	trans_cfg.cmd_q_wdg_timeout =
672
		iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
673

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674 675 676 677 678 679 680 681
	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;
682 683 684 685
	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));
686
	trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv;
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687 688 689 690 691 692 693 694 695 696 697 698 699 700

	/* 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);

701
	if (iwlwifi_mod_params.nvm_file)
702
		mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
703 704 705
	else
		IWL_DEBUG_EEPROM(mvm->trans->dev,
				 "working without external nvm file\n");
706

707
	if (WARN(cfg->no_power_up_nic_in_init && !mvm->nvm_file_name,
708 709 710
		 "not allowing power-up and not having nvm_file\n"))
		goto out_free;

711
	/*
E
Eran Harary 已提交
712
	 * Even if nvm exists in the nvm_file driver should read again the nvm
713 714 715
	 * from the nic because there might be entries that exist in the OTP
	 * and not in the file.
	 * for nics with no_power_up_nic_in_init: rely completley on nvm_file
716
	 */
717
	if (cfg->no_power_up_nic_in_init && mvm->nvm_file_name) {
718
		err = iwl_nvm_init(mvm, false);
719 720
		if (err)
			goto out_free;
721 722 723 724 725 726
	} else {
		err = iwl_trans_start_hw(mvm->trans);
		if (err)
			goto out_free;

		mutex_lock(&mvm->mutex);
727
		iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE);
728
		err = iwl_run_init_mvm_ucode(mvm, true);
729
		if (!err || !iwlmvm_mod_params.init_dbg)
730
			iwl_mvm_stop_device(mvm);
731
		iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE);
732 733 734 735 736 737
		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;
		}
J
Johannes Berg 已提交
738 739
	}

740
	scan_size = iwl_mvm_scan_size(mvm);
741

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742 743 744 745
	mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
	if (!mvm->scan_cmd)
		goto out_free;

746 747 748
	/* Set EBS as successful as long as not stated otherwise by the FW. */
	mvm->last_ebs_successful = true;

J
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749 750 751 752
	err = iwl_mvm_mac_setup_register(mvm);
	if (err)
		goto out_free;

753 754 755
	min_backoff = calc_min_backoff(trans, cfg);
	iwl_mvm_thermal_initialize(mvm, min_backoff);

J
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756 757 758 759
	err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
	if (err)
		goto out_unregister;

760 761
	memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));

762 763 764 765
	/* 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);
766

767 768
	iwl_mvm_tof_init(mvm);

769 770 771
	setup_timer(&mvm->scan_timer, iwl_mvm_scan_timeout,
		    (unsigned long)mvm);

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772 773 774 775
	return op_mode;

 out_unregister:
	ieee80211_unregister_hw(mvm->hw);
776
	iwl_mvm_leds_exit(mvm);
777
	iwl_mvm_thermal_exit(mvm);
J
Johannes Berg 已提交
778
 out_free:
779
	flush_delayed_work(&mvm->fw_dump_wk);
J
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780 781
	iwl_phy_db_free(mvm->phy_db);
	kfree(mvm->scan_cmd);
782
	if (!cfg->no_power_up_nic_in_init || !mvm->nvm_file_name)
783
		iwl_trans_op_mode_leave(trans);
J
Johannes Berg 已提交
784 785 786 787 788 789 790 791 792
	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;

793 794 795 796 797 798 799
	/* 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);

J
Johannes Berg 已提交
800 801
	iwl_mvm_leds_exit(mvm);

802
	iwl_mvm_thermal_exit(mvm);
803

J
Johannes Berg 已提交
804 805 806
	ieee80211_unregister_hw(mvm->hw);

	kfree(mvm->scan_cmd);
807 808
	kfree(mvm->mcast_filter_cmd);
	mvm->mcast_filter_cmd = NULL;
J
Johannes Berg 已提交
809

810 811 812 813
#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
	kfree(mvm->d3_resume_sram);
#endif

814
	iwl_trans_op_mode_leave(mvm->trans);
J
Johannes Berg 已提交
815 816 817 818 819

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

	iwl_free_nvm_data(mvm->nvm_data);
820
	for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
J
Johannes Berg 已提交
821 822
		kfree(mvm->nvm_sections[i].data);

823 824
	iwl_mvm_tof_clean(mvm);

825 826
	del_timer_sync(&mvm->scan_timer);

827 828 829
	mutex_destroy(&mvm->mutex);
	mutex_destroy(&mvm->d0i3_suspend_mutex);

J
Johannes Berg 已提交
830 831 832 833 834 835
	ieee80211_free_hw(mvm->hw);
}

struct iwl_async_handler_entry {
	struct list_head list;
	struct iwl_rx_cmd_buffer rxb;
836
	enum iwl_rx_handler_context context;
837
	void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
J
Johannes Berg 已提交
838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872
};

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;
	struct list_head local_list;

	INIT_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) {
873 874
		if (entry->context == RX_HANDLER_ASYNC_LOCKED)
			mutex_lock(&mvm->mutex);
875
		entry->fn(mvm, &entry->rxb);
J
Johannes Berg 已提交
876 877
		iwl_free_rxb(&entry->rxb);
		list_del(&entry->list);
878 879
		if (entry->context == RX_HANDLER_ASYNC_LOCKED)
			mutex_unlock(&mvm->mutex);
J
Johannes Berg 已提交
880 881 882 883
		kfree(entry);
	}
}

884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904
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;

905 906
		if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
		    cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
907 908
			continue;

909
		iwl_mvm_fw_dbg_collect_trig(mvm, trig,
910 911
					    "CMD 0x%02x.%02x received",
					    pkt->hdr.group_id, pkt->hdr.cmd);
912 913 914 915
		break;
	}
}

916 917 918
static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
			      struct iwl_rx_cmd_buffer *rxb,
			      struct iwl_rx_packet *pkt)
J
Johannes Berg 已提交
919
{
920
	int i;
921

922 923
	iwl_mvm_rx_check_trigger(mvm, pkt);

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924 925 926 927 928 929 930 931 932
	/*
	 * 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];
933 934
		struct iwl_async_handler_entry *entry;

935
		if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
936 937
			continue;

938
		if (rx_h->context == RX_HANDLER_SYNC) {
939
			rx_h->fn(mvm, rxb);
940
			return;
941
		}
942 943 944 945

		entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
		/* we can't do much... */
		if (!entry)
946
			return;
947 948 949 950 951

		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;
952
		entry->context = rx_h->context;
953 954 955 956 957
		spin_lock(&mvm->async_handlers_lock);
		list_add_tail(&entry->list, &mvm->async_handlers_list);
		spin_unlock(&mvm->async_handlers_lock);
		schedule_work(&mvm->async_handlers_wk);
		break;
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958 959 960
	}
}

961 962 963 964 965 966 967 968 969
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);

	if (likely(pkt->hdr.cmd == REPLY_RX_MPDU_CMD))
		iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
970
	else if (pkt->hdr.cmd == FRAME_RELEASE)
971
		iwl_mvm_rx_frame_release(mvm, napi, rxb, 0);
972 973 974 975 976 977 978 979 980 981 982 983 984 985
	else if (pkt->hdr.cmd == REPLY_RX_PHY_CMD)
		iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
	else
		iwl_mvm_rx_common(mvm, rxb, pkt);
}

static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode,
			  struct napi_struct *napi,
			  struct iwl_rx_cmd_buffer *rxb)
{
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);

	if (likely(pkt->hdr.cmd == REPLY_RX_MPDU_CMD))
986
		iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0);
987 988 989
	else if (unlikely(pkt->hdr.group_id == DATA_PATH_GROUP &&
			  pkt->hdr.cmd == RX_QUEUES_NOTIFICATION))
		iwl_mvm_rx_queue_notif(mvm, rxb, 0);
990 991 992 993
	else
		iwl_mvm_rx_common(mvm, rxb, pkt);
}

994
void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
J
Johannes Berg 已提交
995
{
996
	int q;
J
Johannes Berg 已提交
997

998
	if (WARN_ON_ONCE(!mq))
J
Johannes Berg 已提交
999 1000
		return;

1001 1002 1003
	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,
1004
					    "mac80211 %d already stopped\n", q);
1005 1006 1007 1008 1009
			continue;
		}

		ieee80211_stop_queue(mvm->hw, q);
	}
J
Johannes Berg 已提交
1010 1011
}

1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023
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);
}

1024
static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
J
Johannes Berg 已提交
1025 1026
{
	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1027
	unsigned long mq;
J
Johannes Berg 已提交
1028

1029
	spin_lock_bh(&mvm->queue_info_lock);
1030
	mq = mvm->queue_info[hw_queue].hw_queue_to_mac80211;
1031
	spin_unlock_bh(&mvm->queue_info_lock);
J
Johannes Berg 已提交
1032

1033 1034 1035 1036 1037 1038 1039
	iwl_mvm_stop_mac_queues(mvm, mq);
}

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

1040
	if (WARN_ON_ONCE(!mq))
J
Johannes Berg 已提交
1041 1042
		return;

1043 1044 1045
	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,
1046
					    "mac80211 %d still stopped\n", q);
1047 1048 1049 1050 1051
			continue;
		}

		ieee80211_wake_queue(mvm->hw, q);
	}
J
Johannes Berg 已提交
1052 1053
}

1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065
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);
}

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

1076
static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
J
Johannes Berg 已提交
1077 1078
{
	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1079
	bool calibrating = ACCESS_ONCE(mvm->calibrating);
J
Johannes Berg 已提交
1080 1081 1082 1083 1084 1085

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

1086
	wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
1087

1088 1089 1090 1091 1092 1093 1094 1095 1096
	/* 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
1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108
}

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);
}

1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124
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);
}

1125 1126 1127
static void iwl_mvm_fw_error_dump_wk(struct work_struct *work)
{
	struct iwl_mvm *mvm =
1128
		container_of(work, struct iwl_mvm, fw_dump_wk.work);
1129

1130 1131 1132
	if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT))
		return;

1133
	mutex_lock(&mvm->mutex);
1134 1135 1136 1137 1138 1139 1140 1141 1142 1143

	/* 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);
	}

1144
	iwl_mvm_fw_error_dump(mvm);
1145 1146 1147

	/* 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
1148 1149
		     mvm->fw->dbg_dest_tlv &&
		     iwl_mvm_start_fw_dbg_conf(mvm, mvm->fw_dbg_conf));
1150

1151
	mutex_unlock(&mvm->mutex);
1152 1153

	iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
1154 1155
}

1156
void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
J
Johannes Berg 已提交
1157 1158 1159
{
	iwl_abort_notification_waits(&mvm->notif_wait);

1160 1161 1162 1163 1164 1165 1166 1167 1168 1169
	/*
	 * 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.
	 */
1170
	iwl_mvm_report_scan_aborted(mvm);
1171

J
Johannes Berg 已提交
1172 1173 1174 1175 1176 1177
	/*
	 * 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.
	 */
1178
	if (!mvm->restart_fw && fw_error) {
1179 1180
		iwl_mvm_fw_dbg_collect_desc(mvm, &iwl_mvm_dump_desc_assert,
					    NULL);
1181 1182
	} else if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART,
				    &mvm->status)) {
1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205
		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);
1206
	} else if (mvm->cur_ucode == IWL_UCODE_REGULAR) {
1207 1208 1209
		/* don't let the transport/FW power down */
		iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);

1210
		if (fw_error && mvm->restart_fw > 0)
1211
			mvm->restart_fw--;
J
Johannes Berg 已提交
1212 1213 1214 1215
		ieee80211_restart_hw(mvm->hw);
	}
}

1216 1217 1218 1219 1220
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);
1221

1222
	iwl_mvm_nic_restart(mvm, true);
1223 1224
}

J
Johannes Berg 已提交
1225 1226
static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
{
1227 1228
	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);

J
Johannes Berg 已提交
1229
	WARN_ON(1);
1230
	iwl_mvm_nic_restart(mvm, true);
J
Johannes Berg 已提交
1231 1232
}

1233 1234
struct iwl_d0i3_iter_data {
	struct iwl_mvm *mvm;
1235
	struct ieee80211_vif *connected_vif;
1236 1237
	u8 ap_sta_id;
	u8 vif_count;
1238 1239
	u8 offloading_tid;
	bool disable_offloading;
1240 1241
};

1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254
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;

1255 1256
	mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
	if (!mvmsta)
1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 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
		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;
}

1292 1293 1294
static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
					struct ieee80211_vif *vif)
{
1295 1296 1297
	struct iwl_d0i3_iter_data *data = _data;
	struct iwl_mvm *mvm = data->mvm;
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1298 1299 1300 1301 1302 1303 1304
	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;

1305 1306 1307 1308 1309 1310 1311 1312
	/*
	 * 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;

1313
	iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
1314 1315
	iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading,
				   false, flags);
1316 1317 1318 1319 1320 1321 1322

	/*
	 * 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).
	 */
1323 1324
	data->ap_sta_id = mvmvif->ap_sta_id;
	data->vif_count++;
1325 1326 1327 1328 1329 1330

	/*
	 * 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;
1331 1332
}

1333
static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
1334
				    struct iwl_wowlan_config_cmd *cmd,
1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349
				    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);
1350
	cmd->is_11n_connection = ap_sta->ht_cap.ht_supported;
1351
	cmd->offloading_tid = iter_data->offloading_tid;
S
Sara Sharon 已提交
1352
	cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING |
1353
		ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON;
1354 1355 1356 1357
	/*
	 * The d0i3 uCode takes care of the nonqos counters,
	 * so configure only the qos seq ones.
	 */
1358
	iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd);
1359 1360 1361
out:
	rcu_read_unlock();
}
1362 1363

int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
E
Eliad Peller 已提交
1364 1365
{
	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1366
	u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1367
	int ret;
1368 1369 1370
	struct iwl_d0i3_iter_data d0i3_iter_data = {
		.mvm = mvm,
	};
1371 1372 1373
	struct iwl_wowlan_config_cmd wowlan_config_cmd = {
		.wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
					     IWL_WOWLAN_WAKEUP_BEACON_MISS |
1374
					     IWL_WOWLAN_WAKEUP_LINK_CHANGE),
1375
	};
1376 1377
	struct iwl_d3_manager_config d3_cfg_cmd = {
		.min_sleep_time = cpu_to_le32(1000),
1378
		.wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR),
1379
	};
E
Eliad Peller 已提交
1380 1381

	IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
1382

1383 1384 1385
	if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR))
		return -EINVAL;

1386 1387
	set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);

1388 1389 1390 1391 1392 1393 1394 1395 1396
	/*
	 * 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);
1397
		wake_up(&mvm->d0i3_exit_waitq);
1398 1399 1400
		return 1;
	}

1401 1402 1403
	ieee80211_iterate_active_interfaces_atomic(mvm->hw,
						   IEEE80211_IFACE_ITER_NORMAL,
						   iwl_mvm_enter_d0i3_iterator,
1404 1405 1406
						   &d0i3_iter_data);
	if (d0i3_iter_data.vif_count == 1) {
		mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
1407
		mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
1408 1409 1410
	} else {
		WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
		mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1411
		mvm->d0i3_offloading = false;
1412
	}
1413

1414 1415 1416
	/* make sure we have no running tx while configuring the seqno */
	synchronize_net();

1417 1418 1419 1420 1421
	/* 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;

1422 1423
	/* configure wowlan configuration only if needed */
	if (mvm->d0i3_ap_sta_id != IWL_MVM_STATION_COUNT) {
1424 1425 1426 1427 1428 1429
		/* 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);

1430 1431 1432 1433
		iwl_mvm_wowlan_config_key_params(mvm,
						 d0i3_iter_data.connected_vif,
						 true, flags);

1434 1435 1436 1437 1438 1439 1440 1441 1442
		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;
	}
1443

1444 1445 1446
	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
1447 1448
}

1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462
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);
}

1463
struct iwl_mvm_d0i3_exit_work_iter_data {
1464
	struct iwl_mvm *mvm;
1465
	struct iwl_wowlan_status *status;
1466 1467 1468
	u32 wakeup_reasons;
};

1469 1470
static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac,
					struct ieee80211_vif *vif)
1471
{
1472
	struct iwl_mvm_d0i3_exit_work_iter_data *data = _data;
1473
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1474
	u32 reasons = data->wakeup_reasons;
1475

1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486
	/* 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);
1487 1488
}

1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516
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 */
1517
		mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta);
1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544
		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);
}

1545 1546 1547 1548 1549
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
1550
		.flags = CMD_HIGH_PRIO | CMD_WANT_SKB,
1551
	};
1552 1553 1554 1555
	struct iwl_mvm_d0i3_exit_work_iter_data iter_data = {
		.mvm = mvm,
	};

1556
	struct iwl_wowlan_status *status;
1557
	int ret;
1558
	u32 wakeup_reasons = 0;
1559
	__le16 *qos_seq = NULL;
1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570

	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);
1571
	qos_seq = status->qos_seq_ctr;
1572 1573 1574

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

1575 1576 1577 1578 1579 1580
	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);
1581
out:
1582
	iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
1583

1584 1585 1586
	IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n",
		       wakeup_reasons);

1587 1588 1589 1590
	/* qos_seq might point inside resp_pkt, so free it only now */
	if (get_status_cmd.resp_pkt)
		iwl_free_resp(&get_status_cmd);

1591 1592 1593
	/* the FW might have updated the regdomain */
	iwl_mvm_update_changed_regdom(mvm);

1594
	iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
1595 1596 1597
	mutex_unlock(&mvm->mutex);
}

1598
int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
E
Eliad Peller 已提交
1599
{
1600 1601
	u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
		    CMD_WAKE_UP_TRANS;
1602
	int ret;
E
Eliad Peller 已提交
1603 1604

	IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
1605

1606 1607 1608
	if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR))
		return -EINVAL;

1609 1610 1611 1612 1613 1614 1615 1616 1617
	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);

1618 1619
	ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
	if (ret)
1620
		goto out;
1621 1622 1623 1624 1625

	ieee80211_iterate_active_interfaces_atomic(mvm->hw,
						   IEEE80211_IFACE_ITER_NORMAL,
						   iwl_mvm_exit_d0i3_iterator,
						   mvm);
1626 1627 1628
out:
	schedule_work(&mvm->d0i3_exit_work);
	return ret;
E
Eliad Peller 已提交
1629 1630
}

1631
int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
1632 1633 1634 1635 1636 1637 1638
{
	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);
}

1639 1640
#define IWL_MVM_COMMON_OPS					\
	/* these could be differentiated */			\
1641
	.async_cb = iwl_mvm_async_cb,				\
1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654
	.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
1655
static const struct iwl_op_mode_ops iwl_mvm_ops = {
1656 1657 1658 1659 1660 1661 1662 1663 1664 1665
	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);
1666
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1667

1668
	if (unlikely(pkt->hdr.cmd == FRAME_RELEASE))
1669
		iwl_mvm_rx_frame_release(mvm, napi, rxb, queue);
1670 1671 1672
	else if (unlikely(pkt->hdr.cmd == RX_QUEUES_NOTIFICATION &&
			  pkt->hdr.group_id == DATA_PATH_GROUP))
		iwl_mvm_rx_queue_notif(mvm, rxb, queue);
1673 1674
	else
		iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue);
1675 1676 1677 1678 1679 1680
}

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
1681
};