ops.c 46.5 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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}

struct iwl_rx_handlers {
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	u16 cmd_id;
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	bool async;
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	void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
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};

#define RX_HANDLER(_cmd_id, _fn, _async)	\
	{ .cmd_id = _cmd_id , .fn = _fn , .async = _async }
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#define RX_HANDLER_GRP(_grp, _cmd, _fn, _async)	\
	{ .cmd_id = WIDE_ID(_grp, _cmd), .fn = _fn, .async = _async }
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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.
 *
 * The handler can be SYNC - this means that it will be called in the Rx path
 * which can't acquire mvm->mutex. 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.
 */
static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
	RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, false),
	RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, false),

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	RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif, true),
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	RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif, true),
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	RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics, true),
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	RX_HANDLER(ANTENNA_COUPLING_NOTIFICATION,
		   iwl_mvm_rx_ant_coupling_notif, true),
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	RX_HANDLER(BA_WINDOW_STATUS_NOTIFICATION_ID,
		   iwl_mvm_window_status_notif, false),

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	RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif, false),
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	RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc, true),
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	RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, false),

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	RX_HANDLER(SCAN_ITERATION_COMPLETE,
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		   iwl_mvm_rx_lmac_scan_iter_complete_notif, false),
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	RX_HANDLER(SCAN_OFFLOAD_COMPLETE,
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		   iwl_mvm_rx_lmac_scan_complete_notif, true),
	RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_match_found,
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		   false),
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	RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif,
		   true),
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	RX_HANDLER(SCAN_ITERATION_COMPLETE_UMAC,
		   iwl_mvm_rx_umac_scan_iter_complete_notif, false),
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	RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif, false),

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	RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
		   false),

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	RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, false),
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	RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION,
		   iwl_mvm_power_uapsd_misbehaving_ap_notif, false),
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	RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif, true),
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	RX_HANDLER_GRP(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE,
		       iwl_mvm_temp_notif, true),
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	RX_HANDLER_GRP(PHY_OPS_GROUP, CT_KILL_NOTIFICATION,
		       iwl_mvm_ct_kill_notif, false),
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	RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif,
		   true),
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	RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif, false),
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	RX_HANDLER(TOF_NOTIFICATION, iwl_mvm_tof_resp_handler, true),
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	RX_HANDLER_GRP(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF,
		       iwl_mvm_rx_stored_beacon_notif, false),
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	RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF,
		       iwl_mvm_mu_mimo_grp_notif, false),
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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_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),
	[PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names),
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	[DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names),
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	[PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names),
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};

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

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static struct iwl_op_mode *
iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
		      const struct iwl_fw *fw, struct dentry *dbgfs_dir)
{
	struct ieee80211_hw *hw;
	struct iwl_op_mode *op_mode;
	struct iwl_mvm *mvm;
	struct iwl_trans_config trans_cfg = {};
	static const u8 no_reclaim_cmds[] = {
		TX_CMD,
	};
	int err, scan_size;
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	u32 min_backoff;
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	/*
	 * We use IWL_MVM_STATION_COUNT to check the validity of the station
	 * index all over the driver - check that its value corresponds to the
	 * array size.
	 */
	BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT);

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

482 483 484
	if (cfg->max_rx_agg_size)
		hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size;

485 486 487
	if (cfg->max_tx_agg_size)
		hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size;

J
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488 489 490 491 492 493 494 495 496
	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;

497 498
	if (iwl_mvm_has_new_rx_api(mvm)) {
		op_mode->ops = &iwl_mvm_ops_mq;
499
		trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_desc);
500 501
	} else {
		op_mode->ops = &iwl_mvm_ops;
502 503
		trans->rx_mpdu_cmd_hdr_size =
			sizeof(struct iwl_rx_mpdu_res_start);
504 505 506 507 508

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

509 510
	mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0;

511 512 513 514 515 516 517
	mvm->aux_queue = 15;
	mvm->first_agg_queue = 16;
	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;
	}
518
	mvm->sf_state = SF_UNINIT;
519
	mvm->cur_ucode = IWL_UCODE_INIT;
520
	mvm->drop_bcn_ap_mode = true;
521

J
Johannes Berg 已提交
522
	mutex_init(&mvm->mutex);
523
	mutex_init(&mvm->d0i3_suspend_mutex);
J
Johannes Berg 已提交
524 525
	spin_lock_init(&mvm->async_handlers_lock);
	INIT_LIST_HEAD(&mvm->time_event_list);
526
	INIT_LIST_HEAD(&mvm->aux_roc_te_list);
J
Johannes Berg 已提交
527 528
	INIT_LIST_HEAD(&mvm->async_handlers_list);
	spin_lock_init(&mvm->time_event_lock);
529
	spin_lock_init(&mvm->queue_info_lock);
J
Johannes Berg 已提交
530 531 532 533

	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);
534
	INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
535
	INIT_DELAYED_WORK(&mvm->fw_dump_wk, iwl_mvm_fw_error_dump_wk);
536
	INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
J
Johannes Berg 已提交
537

538
	spin_lock_init(&mvm->d0i3_tx_lock);
539
	spin_lock_init(&mvm->refs_lock);
540 541 542
	skb_queue_head_init(&mvm->d0i3_tx);
	init_waitqueue_head(&mvm->d0i3_exit_waitq);

J
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543 544 545 546 547 548 549 550 551
	SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);

	/*
	 * 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);
552 553 554 555 556 557 558 559 560 561 562 563 564 565 566
	switch (iwlwifi_mod_params.amsdu_size) {
	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;
	}
567 568
	trans_cfg.wide_cmd_header = fw_has_api(&mvm->fw->ucode_capa,
					       IWL_UCODE_TLV_API_WIDE_CMD_HDR);
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569

570
	if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DW_BC_TABLE)
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571 572
		trans_cfg.bc_table_dword = true;

573 574
	trans_cfg.command_groups = iwl_mvm_groups;
	trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups);
J
Johannes Berg 已提交
575 576

	trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE;
577
	trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
578
	trans_cfg.scd_set_active = true;
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579

580
	trans_cfg.sdio_adma_addr = fw->sdio_adma_addr;
581
	trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD;
582

583 584
	/* Set a short watchdog for the command queue */
	trans_cfg.cmd_q_wdg_timeout =
585
		iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
586

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587 588 589 590 591 592 593 594
	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;
595 596 597 598
	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));
599
	trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv;
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600 601 602 603 604 605 606 607 608 609 610 611 612 613

	/* 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);

614
	min_backoff = calc_min_backoff(trans, cfg);
615
	iwl_mvm_thermal_initialize(mvm, min_backoff);
616 617

	if (iwlwifi_mod_params.nvm_file)
618
		mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
619 620 621
	else
		IWL_DEBUG_EEPROM(mvm->trans->dev,
				 "working without external nvm file\n");
622

623
	if (WARN(cfg->no_power_up_nic_in_init && !mvm->nvm_file_name,
624 625 626
		 "not allowing power-up and not having nvm_file\n"))
		goto out_free;

627
	/*
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Eran Harary 已提交
628
	 * Even if nvm exists in the nvm_file driver should read again the nvm
629 630 631
	 * 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
632
	 */
633
	if (cfg->no_power_up_nic_in_init && mvm->nvm_file_name) {
634
		err = iwl_nvm_init(mvm, false);
635 636
		if (err)
			goto out_free;
637 638 639 640 641 642
	} else {
		err = iwl_trans_start_hw(mvm->trans);
		if (err)
			goto out_free;

		mutex_lock(&mvm->mutex);
643
		iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE);
644
		err = iwl_run_init_mvm_ucode(mvm, true);
645
		if (!err || !iwlmvm_mod_params.init_dbg)
646
			iwl_mvm_stop_device(mvm);
647
		iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE);
648 649 650 651 652 653
		mutex_unlock(&mvm->mutex);
		/* returns 0 if successful, 1 if success but in rfkill */
		if (err < 0 && !iwlmvm_mod_params.init_dbg) {
			IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
			goto out_free;
		}
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Johannes Berg 已提交
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	}

656
	scan_size = iwl_mvm_scan_size(mvm);
657

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

662 663 664
	/* Set EBS as successful as long as not stated otherwise by the FW. */
	mvm->last_ebs_successful = true;

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665 666 667 668 669 670 671 672
	err = iwl_mvm_mac_setup_register(mvm);
	if (err)
		goto out_free;

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

673 674
	memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));

675 676 677 678
	/* 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);
679

680 681
	iwl_mvm_tof_init(mvm);

682
	/* init RSS hash key */
S
Sara Sharon 已提交
683
	get_random_bytes(mvm->secret_key, sizeof(mvm->secret_key));
684

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685 686 687 688
	return op_mode;

 out_unregister:
	ieee80211_unregister_hw(mvm->hw);
689
	iwl_mvm_leds_exit(mvm);
690
	iwl_mvm_thermal_exit(mvm);
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691
 out_free:
692
	flush_delayed_work(&mvm->fw_dump_wk);
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693 694
	iwl_phy_db_free(mvm->phy_db);
	kfree(mvm->scan_cmd);
695
	if (!cfg->no_power_up_nic_in_init || !mvm->nvm_file_name)
696
		iwl_trans_op_mode_leave(trans);
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	ieee80211_free_hw(mvm->hw);
	return NULL;
}

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

706 707 708 709 710 711 712
	/* If d0i3 is supported, we have released the reference that
	 * the transport started with, so we should take it back now
	 * that we are leaving.
	 */
	if (iwl_mvm_is_d0i3_supported(mvm))
		iwl_trans_ref(mvm->trans);

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713 714
	iwl_mvm_leds_exit(mvm);

715
	iwl_mvm_thermal_exit(mvm);
716

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717 718 719
	ieee80211_unregister_hw(mvm->hw);

	kfree(mvm->scan_cmd);
720 721
	kfree(mvm->mcast_filter_cmd);
	mvm->mcast_filter_cmd = NULL;
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722

723 724 725 726
#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
	kfree(mvm->d3_resume_sram);
#endif

727
	iwl_trans_op_mode_leave(mvm->trans);
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728 729 730 731 732

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

	iwl_free_nvm_data(mvm->nvm_data);
733
	for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
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Johannes Berg 已提交
734 735
		kfree(mvm->nvm_sections[i].data);

736 737
	iwl_mvm_tof_clean(mvm);

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738 739 740 741 742 743
	ieee80211_free_hw(mvm->hw);
}

struct iwl_async_handler_entry {
	struct list_head list;
	struct iwl_rx_cmd_buffer rxb;
744
	void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
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};

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

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

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

	INIT_LIST_HEAD(&local_list);

	/* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
	mutex_lock(&mvm->mutex);

	/*
	 * 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) {
781
		entry->fn(mvm, &entry->rxb);
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782 783 784 785 786 787 788
		iwl_free_rxb(&entry->rxb);
		list_del(&entry->list);
		kfree(entry);
	}
	mutex_unlock(&mvm->mutex);
}

789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809
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;

810 811
		if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
		    cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
812 813
			continue;

814
		iwl_mvm_fw_dbg_collect_trig(mvm, trig,
815 816
					    "CMD 0x%02x.%02x received",
					    pkt->hdr.group_id, pkt->hdr.cmd);
817 818 819 820
		break;
	}
}

821 822 823
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
824
{
825
	int i;
826

827 828
	iwl_mvm_rx_check_trigger(mvm, pkt);

J
Johannes Berg 已提交
829 830 831 832 833 834 835 836 837
	/*
	 * 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];
838 839
		struct iwl_async_handler_entry *entry;

840
		if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
841 842
			continue;

843 844
		if (!rx_h->async) {
			rx_h->fn(mvm, rxb);
845
			return;
846
		}
847 848 849 850

		entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
		/* we can't do much... */
		if (!entry)
851
			return;
852 853 854 855 856 857 858 859 860 861

		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;
		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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862 863 864
	}
}

865 866 867 868 869 870 871 872 873
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);
874 875
	else if (pkt->hdr.cmd == FRAME_RELEASE)
		iwl_mvm_rx_frame_release(mvm, rxb, 0);
876 877 878 879 880 881 882 883 884 885 886 887 888 889
	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))
890
		iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0);
891
	else if (pkt->hdr.cmd == REPLY_RX_PHY_CMD)
892
		iwl_mvm_rx_phy_cmd_mq(mvm, rxb);
893 894 895
	else if (unlikely(pkt->hdr.group_id == DATA_PATH_GROUP &&
			  pkt->hdr.cmd == RX_QUEUES_NOTIFICATION))
		iwl_mvm_rx_queue_notif(mvm, rxb, 0);
896 897 898 899
	else
		iwl_mvm_rx_common(mvm, rxb, pkt);
}

900
void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
J
Johannes Berg 已提交
901
{
902
	int q;
J
Johannes Berg 已提交
903

904
	if (WARN_ON_ONCE(!mq))
J
Johannes Berg 已提交
905 906
		return;

907 908 909
	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,
910
					    "mac80211 %d already stopped\n", q);
911 912 913 914 915
			continue;
		}

		ieee80211_stop_queue(mvm->hw, q);
	}
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916 917
}

918 919 920 921 922 923 924 925 926 927 928 929
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);
}

930
static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
J
Johannes Berg 已提交
931 932
{
	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
933
	unsigned long mq;
J
Johannes Berg 已提交
934

935
	spin_lock_bh(&mvm->queue_info_lock);
936
	mq = mvm->queue_info[hw_queue].hw_queue_to_mac80211;
937
	spin_unlock_bh(&mvm->queue_info_lock);
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Johannes Berg 已提交
938

939 940 941 942 943 944 945
	iwl_mvm_stop_mac_queues(mvm, mq);
}

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

946
	if (WARN_ON_ONCE(!mq))
J
Johannes Berg 已提交
947 948
		return;

949 950 951
	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,
952
					    "mac80211 %d still stopped\n", q);
953 954 955 956 957
			continue;
		}

		ieee80211_wake_queue(mvm->hw, q);
	}
J
Johannes Berg 已提交
958 959
}

960 961 962 963 964 965 966 967 968 969 970 971
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);
}

972 973 974 975 976 977 978 979 980 981
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));
}

982
static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
J
Johannes Berg 已提交
983 984
{
	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
985
	bool calibrating = ACCESS_ONCE(mvm->calibrating);
J
Johannes Berg 已提交
986 987 988 989 990 991

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

992
	wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
993

994 995 996 997 998 999 1000 1001 1002
	/* 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
1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014
}

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);
}

1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030
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);
}

1031 1032 1033
static void iwl_mvm_fw_error_dump_wk(struct work_struct *work)
{
	struct iwl_mvm *mvm =
1034
		container_of(work, struct iwl_mvm, fw_dump_wk.work);
1035

1036 1037 1038
	if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT))
		return;

1039
	mutex_lock(&mvm->mutex);
1040 1041 1042 1043 1044 1045 1046 1047 1048 1049

	/* 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);
	}

1050
	iwl_mvm_fw_error_dump(mvm);
1051 1052 1053

	/* 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
1054 1055
		     mvm->fw->dbg_dest_tlv &&
		     iwl_mvm_start_fw_dbg_conf(mvm, mvm->fw_dbg_conf));
1056

1057
	mutex_unlock(&mvm->mutex);
1058 1059

	iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
1060 1061
}

1062
void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
J
Johannes Berg 已提交
1063 1064 1065
{
	iwl_abort_notification_waits(&mvm->notif_wait);

1066 1067 1068 1069 1070 1071 1072 1073 1074 1075
	/*
	 * 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.
	 */
1076
	iwl_mvm_report_scan_aborted(mvm);
1077

J
Johannes Berg 已提交
1078 1079 1080 1081 1082 1083
	/*
	 * 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.
	 */
1084
	if (!mvm->restart_fw && fw_error) {
1085 1086
		iwl_mvm_fw_dbg_collect_desc(mvm, &iwl_mvm_dump_desc_assert,
					    NULL);
1087 1088
	} else if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART,
				    &mvm->status)) {
1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111
		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);
1112
	} else if (mvm->cur_ucode == IWL_UCODE_REGULAR) {
1113 1114 1115
		/* don't let the transport/FW power down */
		iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);

1116
		if (fw_error && mvm->restart_fw > 0)
1117
			mvm->restart_fw--;
J
Johannes Berg 已提交
1118 1119 1120 1121
		ieee80211_restart_hw(mvm->hw);
	}
}

1122 1123 1124 1125 1126
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);
1127

1128
	iwl_mvm_nic_restart(mvm, true);
1129 1130
}

J
Johannes Berg 已提交
1131 1132
static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
{
1133 1134
	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);

J
Johannes Berg 已提交
1135
	WARN_ON(1);
1136
	iwl_mvm_nic_restart(mvm, true);
J
Johannes Berg 已提交
1137 1138
}

1139 1140
struct iwl_d0i3_iter_data {
	struct iwl_mvm *mvm;
1141
	struct ieee80211_vif *connected_vif;
1142 1143
	u8 ap_sta_id;
	u8 vif_count;
1144 1145
	u8 offloading_tid;
	bool disable_offloading;
1146 1147
};

1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199
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 ieee80211_sta *ap_sta;
	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;

	ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id]);
	if (IS_ERR_OR_NULL(ap_sta))
		return false;

	mvmsta = iwl_mvm_sta_from_mac80211(ap_sta);
	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;
}

1200 1201 1202
static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
					struct ieee80211_vif *vif)
{
1203 1204 1205
	struct iwl_d0i3_iter_data *data = _data;
	struct iwl_mvm *mvm = data->mvm;
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1206 1207 1208 1209 1210 1211 1212
	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;

1213 1214 1215 1216 1217 1218 1219 1220
	/*
	 * 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;

1221
	iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
1222 1223
	iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading,
				   false, flags);
1224 1225 1226 1227 1228 1229 1230

	/*
	 * 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).
	 */
1231 1232
	data->ap_sta_id = mvmvif->ap_sta_id;
	data->vif_count++;
1233 1234 1235 1236 1237 1238

	/*
	 * 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;
1239 1240
}

1241
static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
1242
				    struct iwl_wowlan_config_cmd *cmd,
1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257
				    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);
1258
	cmd->is_11n_connection = ap_sta->ht_cap.ht_supported;
1259
	cmd->offloading_tid = iter_data->offloading_tid;
S
Sara Sharon 已提交
1260
	cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING |
1261
		ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON;
1262 1263 1264 1265
	/*
	 * The d0i3 uCode takes care of the nonqos counters,
	 * so configure only the qos seq ones.
	 */
1266
	iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd);
1267 1268 1269
out:
	rcu_read_unlock();
}
1270 1271

int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
E
Eliad Peller 已提交
1272 1273
{
	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1274
	u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1275
	int ret;
1276 1277 1278
	struct iwl_d0i3_iter_data d0i3_iter_data = {
		.mvm = mvm,
	};
1279 1280 1281
	struct iwl_wowlan_config_cmd wowlan_config_cmd = {
		.wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
					     IWL_WOWLAN_WAKEUP_BEACON_MISS |
1282
					     IWL_WOWLAN_WAKEUP_LINK_CHANGE),
1283
	};
1284 1285
	struct iwl_d3_manager_config d3_cfg_cmd = {
		.min_sleep_time = cpu_to_le32(1000),
1286
		.wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR),
1287
	};
E
Eliad Peller 已提交
1288 1289

	IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
1290

1291 1292 1293
	if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR))
		return -EINVAL;

1294 1295
	set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);

1296 1297 1298 1299 1300 1301 1302 1303 1304
	/*
	 * 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);
1305
		wake_up(&mvm->d0i3_exit_waitq);
1306 1307 1308
		return 1;
	}

1309 1310 1311
	ieee80211_iterate_active_interfaces_atomic(mvm->hw,
						   IEEE80211_IFACE_ITER_NORMAL,
						   iwl_mvm_enter_d0i3_iterator,
1312 1313 1314
						   &d0i3_iter_data);
	if (d0i3_iter_data.vif_count == 1) {
		mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
1315
		mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
1316 1317 1318
	} else {
		WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
		mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1319
		mvm->d0i3_offloading = false;
1320
	}
1321

1322 1323 1324
	/* make sure we have no running tx while configuring the seqno */
	synchronize_net();

1325 1326 1327 1328 1329
	/* 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;

1330 1331
	/* configure wowlan configuration only if needed */
	if (mvm->d0i3_ap_sta_id != IWL_MVM_STATION_COUNT) {
1332 1333 1334 1335 1336 1337
		/* 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);

1338 1339 1340 1341
		iwl_mvm_wowlan_config_key_params(mvm,
						 d0i3_iter_data.connected_vif,
						 true, flags);

1342 1343 1344 1345 1346 1347 1348 1349 1350
		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;
	}
1351

1352 1353 1354
	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
1355 1356
}

1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370
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);
}

1371
struct iwl_mvm_d0i3_exit_work_iter_data {
1372
	struct iwl_mvm *mvm;
1373
	struct iwl_wowlan_status *status;
1374 1375 1376
	u32 wakeup_reasons;
};

1377 1378
static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac,
					struct ieee80211_vif *vif)
1379
{
1380
	struct iwl_mvm_d0i3_exit_work_iter_data *data = _data;
1381
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1382
	u32 reasons = data->wakeup_reasons;
1383

1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394
	/* 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);
1395 1396
}

1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424
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 */
1425
		mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta);
1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452
		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);
}

1453 1454 1455 1456 1457
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
1458
		.flags = CMD_HIGH_PRIO | CMD_WANT_SKB,
1459
	};
1460 1461 1462 1463
	struct iwl_mvm_d0i3_exit_work_iter_data iter_data = {
		.mvm = mvm,
	};

1464
	struct iwl_wowlan_status *status;
1465
	int ret;
1466
	u32 wakeup_reasons = 0;
1467
	__le16 *qos_seq = NULL;
1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478

	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);
1479
	qos_seq = status->qos_seq_ctr;
1480 1481 1482

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

1483 1484 1485 1486 1487 1488
	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);
1489
out:
1490
	iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
1491

1492 1493 1494
	IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n",
		       wakeup_reasons);

1495 1496 1497 1498
	/* qos_seq might point inside resp_pkt, so free it only now */
	if (get_status_cmd.resp_pkt)
		iwl_free_resp(&get_status_cmd);

1499 1500 1501
	/* the FW might have updated the regdomain */
	iwl_mvm_update_changed_regdom(mvm);

1502
	iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
1503 1504 1505
	mutex_unlock(&mvm->mutex);
}

1506
int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
E
Eliad Peller 已提交
1507
{
1508 1509
	u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
		    CMD_WAKE_UP_TRANS;
1510
	int ret;
E
Eliad Peller 已提交
1511 1512

	IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
1513

1514 1515 1516
	if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR))
		return -EINVAL;

1517 1518 1519 1520 1521 1522 1523 1524 1525
	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);

1526 1527
	ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
	if (ret)
1528
		goto out;
1529 1530 1531 1532 1533

	ieee80211_iterate_active_interfaces_atomic(mvm->hw,
						   IEEE80211_IFACE_ITER_NORMAL,
						   iwl_mvm_exit_d0i3_iterator,
						   mvm);
1534 1535 1536
out:
	schedule_work(&mvm->d0i3_exit_work);
	return ret;
E
Eliad Peller 已提交
1537 1538
}

1539
int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
1540 1541 1542 1543 1544 1545 1546
{
	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);
}

1547 1548
#define IWL_MVM_COMMON_OPS					\
	/* these could be differentiated */			\
1549
	.async_cb = iwl_mvm_async_cb,				\
1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562
	.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
1563
static const struct iwl_op_mode_ops iwl_mvm_ops = {
1564 1565 1566 1567 1568 1569 1570 1571 1572 1573
	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);
1574
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1575

1576 1577
	if (unlikely(pkt->hdr.cmd == FRAME_RELEASE))
		iwl_mvm_rx_frame_release(mvm, rxb, queue);
1578 1579 1580
	else if (unlikely(pkt->hdr.cmd == RX_QUEUES_NOTIFICATION &&
			  pkt->hdr.group_id == DATA_PATH_GROUP))
		iwl_mvm_rx_queue_notif(mvm, rxb, queue);
1581 1582
	else
		iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue);
1583 1584 1585 1586 1587 1588
}

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
1589
};