fw.c

/******************************************************************************
 *
 * This file is provided under a dual BSD/GPLv2 license.  When using or
 * redistributing this file, you may do so under either license.
 *
 * GPL LICENSE SUMMARY
 *
 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
 * Copyright(c) 2018        Intel Corporation
 *
 * 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.
 *
 * The full GNU General Public License is included in this distribution
 * in the file called COPYING.
 *
 * Contact Information:
 *  Intel Linux Wireless <linuxwifi@intel.com>
 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
 * BSD LICENSE
 *
 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
 * Copyright(c) 2018        Intel Corporation
 * 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 <net/mac80211.h>
#include <linux/netdevice.h>

#include "iwl-trans.h"
#include "iwl-op-mode.h"
#include "fw/img.h"
#include "iwl-debug.h"
#include "iwl-csr.h" /* for iwl_mvm_rx_card_state_notif */
#include "iwl-io.h" /* for iwl_mvm_rx_card_state_notif */
#include "iwl-prph.h"
#include "fw/acpi.h"

#include "mvm.h"
#include "fw/dbg.h"
#include "iwl-phy-db.h"
#include "iwl-modparams.h"
#include "iwl-nvm-parse.h"

#define MVM_UCODE_ALIVE_TIMEOUT	HZ
#define MVM_UCODE_CALIB_TIMEOUT	(2*HZ)

#define UCODE_VALID_OK	cpu_to_le32(0x1)

struct iwl_mvm_alive_data {
	bool valid;
	u32 scd_base_addr;
};

static int iwl_send_tx_ant_cfg(struct iwl_mvm *mvm, u8 valid_tx_ant)
{
	struct iwl_tx_ant_cfg_cmd tx_ant_cmd = {
		.valid = cpu_to_le32(valid_tx_ant),
	};

	IWL_DEBUG_FW(mvm, "select valid tx ant: %u\n", valid_tx_ant);
	return iwl_mvm_send_cmd_pdu(mvm, TX_ANT_CONFIGURATION_CMD, 0,
				    sizeof(tx_ant_cmd), &tx_ant_cmd);
}

static int iwl_send_rss_cfg_cmd(struct iwl_mvm *mvm)
{
	int i;
	struct iwl_rss_config_cmd cmd = {
		.flags = cpu_to_le32(IWL_RSS_ENABLE),
		.hash_mask = IWL_RSS_HASH_TYPE_IPV4_TCP |
			     IWL_RSS_HASH_TYPE_IPV4_UDP |
			     IWL_RSS_HASH_TYPE_IPV4_PAYLOAD |
			     IWL_RSS_HASH_TYPE_IPV6_TCP |
			     IWL_RSS_HASH_TYPE_IPV6_UDP |
			     IWL_RSS_HASH_TYPE_IPV6_PAYLOAD,
	};

	if (mvm->trans->num_rx_queues == 1)
		return 0;

	/* Do not direct RSS traffic to Q 0 which is our fallback queue */
	for (i = 0; i < ARRAY_SIZE(cmd.indirection_table); i++)
		cmd.indirection_table[i] =
			1 + (i % (mvm->trans->num_rx_queues - 1));
	netdev_rss_key_fill(cmd.secret_key, sizeof(cmd.secret_key));

	return iwl_mvm_send_cmd_pdu(mvm, RSS_CONFIG_CMD, 0, sizeof(cmd), &cmd);
}

static int iwl_configure_rxq(struct iwl_mvm *mvm)
{
	int i, num_queues, size;
	struct iwl_rfh_queue_config *cmd;

	/* Do not configure default queue, it is configured via context info */
	num_queues = mvm->trans->num_rx_queues - 1;

	size = sizeof(*cmd) + num_queues * sizeof(struct iwl_rfh_queue_data);

	cmd = kzalloc(size, GFP_KERNEL);
	if (!cmd)
		return -ENOMEM;

	cmd->num_queues = num_queues;

	for (i = 0; i < num_queues; i++) {
		struct iwl_trans_rxq_dma_data data;

		cmd->data[i].q_num = i + 1;
		iwl_trans_get_rxq_dma_data(mvm->trans, i + 1, &data);

		cmd->data[i].fr_bd_cb = cpu_to_le64(data.fr_bd_cb);
		cmd->data[i].urbd_stts_wrptr =
			cpu_to_le64(data.urbd_stts_wrptr);
		cmd->data[i].ur_bd_cb = cpu_to_le64(data.ur_bd_cb);
		cmd->data[i].fr_bd_wid = cpu_to_le32(data.fr_bd_wid);
	}

	return iwl_mvm_send_cmd_pdu(mvm,
				    WIDE_ID(DATA_PATH_GROUP,
					    RFH_QUEUE_CONFIG_CMD),
				    0, size, cmd);
}

static int iwl_mvm_send_dqa_cmd(struct iwl_mvm *mvm)
{
	struct iwl_dqa_enable_cmd dqa_cmd = {
		.cmd_queue = cpu_to_le32(IWL_MVM_DQA_CMD_QUEUE),
	};
	u32 cmd_id = iwl_cmd_id(DQA_ENABLE_CMD, DATA_PATH_GROUP, 0);
	int ret;

	ret = iwl_mvm_send_cmd_pdu(mvm, cmd_id, 0, sizeof(dqa_cmd), &dqa_cmd);
	if (ret)
		IWL_ERR(mvm, "Failed to send DQA enabling command: %d\n", ret);
	else
		IWL_DEBUG_FW(mvm, "Working in DQA mode\n");

	return ret;
}

void iwl_mvm_mfu_assert_dump_notif(struct iwl_mvm *mvm,
				   struct iwl_rx_cmd_buffer *rxb)
{
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
	struct iwl_mfu_assert_dump_notif *mfu_dump_notif = (void *)pkt->data;
	__le32 *dump_data = mfu_dump_notif->data;
	int n_words = le32_to_cpu(mfu_dump_notif->data_size) / sizeof(__le32);
	int i;

	if (mfu_dump_notif->index_num == 0)
		IWL_INFO(mvm, "MFUART assert id 0x%x occurred\n",
			 le32_to_cpu(mfu_dump_notif->assert_id));

	for (i = 0; i < n_words; i++)
		IWL_DEBUG_INFO(mvm,
			       "MFUART assert dump, dword %u: 0x%08x\n",
			       le16_to_cpu(mfu_dump_notif->index_num) *
			       n_words + i,
			       le32_to_cpu(dump_data[i]));
}

static bool iwl_alive_fn(struct iwl_notif_wait_data *notif_wait,
			 struct iwl_rx_packet *pkt, void *data)
{
	struct iwl_mvm *mvm =
		container_of(notif_wait, struct iwl_mvm, notif_wait);
	struct iwl_mvm_alive_data *alive_data = data;
	struct mvm_alive_resp_v3 *palive3;
	struct mvm_alive_resp *palive;
	struct iwl_umac_alive *umac;
	struct iwl_lmac_alive *lmac1;
	struct iwl_lmac_alive *lmac2 = NULL;
	u16 status;
	u32 umac_error_event_table;

	if (iwl_rx_packet_payload_len(pkt) == sizeof(*palive)) {
		palive = (void *)pkt->data;
		umac = &palive->umac_data;
		lmac1 = &palive->lmac_data[0];
		lmac2 = &palive->lmac_data[1];
		status = le16_to_cpu(palive->status);
	} else {
		palive3 = (void *)pkt->data;
		umac = &palive3->umac_data;
		lmac1 = &palive3->lmac_data;
		status = le16_to_cpu(palive3->status);
	}

	mvm->error_event_table[0] = le32_to_cpu(lmac1->error_event_table_ptr);
	if (lmac2)
		mvm->error_event_table[1] =
			le32_to_cpu(lmac2->error_event_table_ptr);
	mvm->log_event_table = le32_to_cpu(lmac1->log_event_table_ptr);

	umac_error_event_table = le32_to_cpu(umac->error_info_addr);

	if (!umac_error_event_table) {
		mvm->support_umac_log = false;
	} else if (umac_error_event_table >=
		   mvm->trans->cfg->min_umac_error_event_table) {
		mvm->support_umac_log = true;
		mvm->umac_error_event_table = umac_error_event_table;
	} else {
		IWL_ERR(mvm,
			"Not valid error log pointer 0x%08X for %s uCode\n",
			mvm->umac_error_event_table,
			(mvm->fwrt.cur_fw_img == IWL_UCODE_INIT) ?
			"Init" : "RT");
		mvm->support_umac_log = false;
	}

	alive_data->scd_base_addr = le32_to_cpu(lmac1->scd_base_ptr);
	alive_data->valid = status == IWL_ALIVE_STATUS_OK;

	IWL_DEBUG_FW(mvm,
		     "Alive ucode status 0x%04x revision 0x%01X 0x%01X\n",
		     status, lmac1->ver_type, lmac1->ver_subtype);

	if (lmac2)
		IWL_DEBUG_FW(mvm, "Alive ucode CDB\n");

	IWL_DEBUG_FW(mvm,
		     "UMAC version: Major - 0x%x, Minor - 0x%x\n",
		     le32_to_cpu(umac->umac_major),
		     le32_to_cpu(umac->umac_minor));

	return true;
}

static bool iwl_wait_init_complete(struct iwl_notif_wait_data *notif_wait,
				   struct iwl_rx_packet *pkt, void *data)
{
	WARN_ON(pkt->hdr.cmd != INIT_COMPLETE_NOTIF);

	return true;
}

static bool iwl_wait_phy_db_entry(struct iwl_notif_wait_data *notif_wait,
				  struct iwl_rx_packet *pkt, void *data)
{
	struct iwl_phy_db *phy_db = data;

	if (pkt->hdr.cmd != CALIB_RES_NOTIF_PHY_DB) {
		WARN_ON(pkt->hdr.cmd != INIT_COMPLETE_NOTIF);
		return true;
	}

	WARN_ON(iwl_phy_db_set_section(phy_db, pkt));

	return false;
}

static int iwl_mvm_load_ucode_wait_alive(struct iwl_mvm *mvm,
					 enum iwl_ucode_type ucode_type)
{
	struct iwl_notification_wait alive_wait;
	struct iwl_mvm_alive_data alive_data;
	const struct fw_img *fw;
	int ret, i;
	enum iwl_ucode_type old_type = mvm->fwrt.cur_fw_img;
	static const u16 alive_cmd[] = { MVM_ALIVE };

	set_bit(IWL_FWRT_STATUS_WAIT_ALIVE, &mvm->fwrt.status);
	if (ucode_type == IWL_UCODE_REGULAR &&
	    iwl_fw_dbg_conf_usniffer(mvm->fw, FW_DBG_START_FROM_ALIVE) &&
	    !(fw_has_capa(&mvm->fw->ucode_capa,
			  IWL_UCODE_TLV_CAPA_USNIFFER_UNIFIED)))
		fw = iwl_get_ucode_image(mvm->fw, IWL_UCODE_REGULAR_USNIFFER);
	else
		fw = iwl_get_ucode_image(mvm->fw, ucode_type);
	if (WARN_ON(!fw))
		return -EINVAL;
	iwl_fw_set_current_image(&mvm->fwrt, ucode_type);
	clear_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status);

	iwl_init_notification_wait(&mvm->notif_wait, &alive_wait,
				   alive_cmd, ARRAY_SIZE(alive_cmd),
				   iwl_alive_fn, &alive_data);

	ret = iwl_trans_start_fw(mvm->trans, fw, ucode_type == IWL_UCODE_INIT);
	if (ret) {
		iwl_fw_set_current_image(&mvm->fwrt, old_type);
		iwl_remove_notification(&mvm->notif_wait, &alive_wait);
		return ret;
	}

	/*
	 * Some things may run in the background now, but we
	 * just wait for the ALIVE notification here.
	 */
	ret = iwl_wait_notification(&mvm->notif_wait, &alive_wait,
				    MVM_UCODE_ALIVE_TIMEOUT);
	if (ret) {
		struct iwl_trans *trans = mvm->trans;

		if (trans->cfg->device_family >= IWL_DEVICE_FAMILY_22000)
			IWL_ERR(mvm,
				"SecBoot CPU1 Status: 0x%x, CPU2 Status: 0x%x\n",
				iwl_read_prph(trans, UMAG_SB_CPU_1_STATUS),
				iwl_read_prph(trans, UMAG_SB_CPU_2_STATUS));
		else if (trans->cfg->device_family >= IWL_DEVICE_FAMILY_8000)
			IWL_ERR(mvm,
				"SecBoot CPU1 Status: 0x%x, CPU2 Status: 0x%x\n",
				iwl_read_prph(trans, SB_CPU_1_STATUS),
				iwl_read_prph(trans, SB_CPU_2_STATUS));
		iwl_fw_set_current_image(&mvm->fwrt, old_type);
		return ret;
	}

	if (!alive_data.valid) {
		IWL_ERR(mvm, "Loaded ucode is not valid!\n");
		iwl_fw_set_current_image(&mvm->fwrt, old_type);
		return -EIO;
	}

	iwl_trans_fw_alive(mvm->trans, alive_data.scd_base_addr);

	/*
	 * Note: all the queues are enabled as part of the interface
	 * initialization, but in firmware restart scenarios they
	 * could be stopped, so wake them up. In firmware restart,
	 * mac80211 will have the queues stopped as well until the
	 * reconfiguration completes. During normal startup, they
	 * will be empty.
	 */

	memset(&mvm->queue_info, 0, sizeof(mvm->queue_info));
	/*
	 * Set a 'fake' TID for the command queue, since we use the
	 * hweight() of the tid_bitmap as a refcount now. Not that
	 * we ever even consider the command queue as one we might
	 * want to reuse, but be safe nevertheless.
	 */
	mvm->queue_info[IWL_MVM_DQA_CMD_QUEUE].tid_bitmap =
		BIT(IWL_MAX_TID_COUNT + 2);

	for (i = 0; i < IEEE80211_MAX_QUEUES; i++)
		atomic_set(&mvm->mac80211_queue_stop_count[i], 0);

	set_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status);
#ifdef CONFIG_IWLWIFI_DEBUGFS
	iwl_fw_set_dbg_rec_on(&mvm->fwrt);
#endif
	clear_bit(IWL_FWRT_STATUS_WAIT_ALIVE, &mvm->fwrt.status);

	return 0;
}

static int iwl_run_unified_mvm_ucode(struct iwl_mvm *mvm, bool read_nvm)
{
	struct iwl_notification_wait init_wait;
	struct iwl_nvm_access_complete_cmd nvm_complete = {};
	struct iwl_init_extended_cfg_cmd init_cfg = {
		.init_flags = cpu_to_le32(BIT(IWL_INIT_NVM)),
	};
	static const u16 init_complete[] = {
		INIT_COMPLETE_NOTIF,
	};
	int ret;

	lockdep_assert_held(&mvm->mutex);

	iwl_init_notification_wait(&mvm->notif_wait,
				   &init_wait,
				   init_complete,
				   ARRAY_SIZE(init_complete),
				   iwl_wait_init_complete,
				   NULL);

	/* Will also start the device */
	ret = iwl_mvm_load_ucode_wait_alive(mvm, IWL_UCODE_REGULAR);
	if (ret) {
		IWL_ERR(mvm, "Failed to start RT ucode: %d\n", ret);
		iwl_fw_assert_error_dump(&mvm->fwrt);
		goto error;
	}

	/* Send init config command to mark that we are sending NVM access
	 * commands
	 */
	ret = iwl_mvm_send_cmd_pdu(mvm, WIDE_ID(SYSTEM_GROUP,
						INIT_EXTENDED_CFG_CMD), 0,
				   sizeof(init_cfg), &init_cfg);
	if (ret) {
		IWL_ERR(mvm, "Failed to run init config command: %d\n",
			ret);
		goto error;
	}

	/* Load NVM to NIC if needed */
	if (mvm->nvm_file_name) {
		iwl_read_external_nvm(mvm->trans, mvm->nvm_file_name,
				      mvm->nvm_sections);
		iwl_mvm_load_nvm_to_nic(mvm);
	}

	if (IWL_MVM_PARSE_NVM && read_nvm) {
		ret = iwl_nvm_init(mvm);
		if (ret) {
			IWL_ERR(mvm, "Failed to read NVM: %d\n", ret);
			goto error;
		}
	}

	ret = iwl_mvm_send_cmd_pdu(mvm, WIDE_ID(REGULATORY_AND_NVM_GROUP,
						NVM_ACCESS_COMPLETE), 0,
				   sizeof(nvm_complete), &nvm_complete);
	if (ret) {
		IWL_ERR(mvm, "Failed to run complete NVM access: %d\n",
			ret);
		goto error;
	}

	/* We wait for the INIT complete notification */
	ret = iwl_wait_notification(&mvm->notif_wait, &init_wait,
				    MVM_UCODE_ALIVE_TIMEOUT);
	if (ret)
		return ret;

	/* Read the NVM only at driver load time, no need to do this twice */
	if (!IWL_MVM_PARSE_NVM && read_nvm) {
		mvm->nvm_data = iwl_get_nvm(mvm->trans, mvm->fw);
		if (IS_ERR(mvm->nvm_data)) {
			ret = PTR_ERR(mvm->nvm_data);
			mvm->nvm_data = NULL;
			IWL_ERR(mvm, "Failed to read NVM: %d\n", ret);
			return ret;
		}
	}

	return 0;

error:
	iwl_remove_notification(&mvm->notif_wait, &init_wait);
	return ret;
}

static int iwl_send_phy_cfg_cmd(struct iwl_mvm *mvm)
{
	struct iwl_phy_cfg_cmd phy_cfg_cmd;
	enum iwl_ucode_type ucode_type = mvm->fwrt.cur_fw_img;

	/* Set parameters */
	phy_cfg_cmd.phy_cfg = cpu_to_le32(iwl_mvm_get_phy_config(mvm));

	/* set flags extra PHY configuration flags from the device's cfg */
	phy_cfg_cmd.phy_cfg |= cpu_to_le32(mvm->cfg->extra_phy_cfg_flags);

	phy_cfg_cmd.calib_control.event_trigger =
		mvm->fw->default_calib[ucode_type].event_trigger;
	phy_cfg_cmd.calib_control.flow_trigger =
		mvm->fw->default_calib[ucode_type].flow_trigger;

	IWL_DEBUG_INFO(mvm, "Sending Phy CFG command: 0x%x\n",
		       phy_cfg_cmd.phy_cfg);

	return iwl_mvm_send_cmd_pdu(mvm, PHY_CONFIGURATION_CMD, 0,
				    sizeof(phy_cfg_cmd), &phy_cfg_cmd);
}

int iwl_run_init_mvm_ucode(struct iwl_mvm *mvm, bool read_nvm)
{
	struct iwl_notification_wait calib_wait;
	static const u16 init_complete[] = {
		INIT_COMPLETE_NOTIF,
		CALIB_RES_NOTIF_PHY_DB
	};
	int ret;

	if (iwl_mvm_has_unified_ucode(mvm))
		return iwl_run_unified_mvm_ucode(mvm, true);

	lockdep_assert_held(&mvm->mutex);

	if (WARN_ON_ONCE(mvm->calibrating))
		return 0;

	iwl_init_notification_wait(&mvm->notif_wait,
				   &calib_wait,
				   init_complete,
				   ARRAY_SIZE(init_complete),
				   iwl_wait_phy_db_entry,
				   mvm->phy_db);

	/* Will also start the device */
	ret = iwl_mvm_load_ucode_wait_alive(mvm, IWL_UCODE_INIT);
	if (ret) {
		IWL_ERR(mvm, "Failed to start INIT ucode: %d\n", ret);
		goto remove_notif;
	}

	if (mvm->cfg->device_family < IWL_DEVICE_FAMILY_8000) {
		ret = iwl_mvm_send_bt_init_conf(mvm);
		if (ret)
			goto remove_notif;
	}

	/* Read the NVM only at driver load time, no need to do this twice */
	if (read_nvm) {
		ret = iwl_nvm_init(mvm);
		if (ret) {
			IWL_ERR(mvm, "Failed to read NVM: %d\n", ret);
			goto remove_notif;
		}
	}

	/* In case we read the NVM from external file, load it to the NIC */
	if (mvm->nvm_file_name)
		iwl_mvm_load_nvm_to_nic(mvm);

	WARN_ON(iwl_nvm_check_version(mvm->nvm_data, mvm->trans));

	/*
	 * abort after reading the nvm in case RF Kill is on, we will complete
	 * the init seq later when RF kill will switch to off
	 */
	if (iwl_mvm_is_radio_hw_killed(mvm)) {
		IWL_DEBUG_RF_KILL(mvm,
				  "jump over all phy activities due to RF kill\n");
		goto remove_notif;
	}

	mvm->calibrating = true;

	/* Send TX valid antennas before triggering calibrations */
	ret = iwl_send_tx_ant_cfg(mvm, iwl_mvm_get_valid_tx_ant(mvm));
	if (ret)
		goto remove_notif;

	ret = iwl_send_phy_cfg_cmd(mvm);
	if (ret) {
		IWL_ERR(mvm, "Failed to run INIT calibrations: %d\n",
			ret);
		goto remove_notif;
	}

	/*
	 * Some things may run in the background now, but we
	 * just wait for the calibration complete notification.
	 */
	ret = iwl_wait_notification(&mvm->notif_wait, &calib_wait,
				    MVM_UCODE_CALIB_TIMEOUT);
	if (!ret)
		goto out;

	if (iwl_mvm_is_radio_hw_killed(mvm)) {
		IWL_DEBUG_RF_KILL(mvm, "RFKILL while calibrating.\n");
		ret = 0;
	} else {
		IWL_ERR(mvm, "Failed to run INIT calibrations: %d\n",
			ret);
	}

	goto out;

remove_notif:
	iwl_remove_notification(&mvm->notif_wait, &calib_wait);
out:
	mvm->calibrating = false;
	if (iwlmvm_mod_params.init_dbg && !mvm->nvm_data) {
		/* we want to debug INIT and we have no NVM - fake */
		mvm->nvm_data = kzalloc(sizeof(struct iwl_nvm_data) +
					sizeof(struct ieee80211_channel) +
					sizeof(struct ieee80211_rate),
					GFP_KERNEL);
		if (!mvm->nvm_data)
			return -ENOMEM;
		mvm->nvm_data->bands[0].channels = mvm->nvm_data->channels;
		mvm->nvm_data->bands[0].n_channels = 1;
		mvm->nvm_data->bands[0].n_bitrates = 1;
		mvm->nvm_data->bands[0].bitrates =
			(void *)mvm->nvm_data->channels + 1;
		mvm->nvm_data->bands[0].bitrates->hw_value = 10;
	}

	return ret;
}

static int iwl_mvm_config_ltr(struct iwl_mvm *mvm)
{
	struct iwl_ltr_config_cmd cmd = {
		.flags = cpu_to_le32(LTR_CFG_FLAG_FEATURE_ENABLE),
	};

	if (!mvm->trans->ltr_enabled)
		return 0;

	return iwl_mvm_send_cmd_pdu(mvm, LTR_CONFIG, 0,
				    sizeof(cmd), &cmd);
}

#ifdef CONFIG_ACPI
static int iwl_mvm_sar_set_profile(struct iwl_mvm *mvm,
				   union acpi_object *table,
				   struct iwl_mvm_sar_profile *profile,
				   bool enabled)
{
	int i;

	profile->enabled = enabled;

	for (i = 0; i < ACPI_SAR_TABLE_SIZE; i++) {
		if ((table[i].type != ACPI_TYPE_INTEGER) ||
		    (table[i].integer.value > U8_MAX))
			return -EINVAL;

		profile->table[i] = table[i].integer.value;
	}

	return 0;
}

static int iwl_mvm_sar_get_wrds_table(struct iwl_mvm *mvm)
{
	union acpi_object *wifi_pkg, *table, *data;
	bool enabled;
	int ret;

	data = iwl_acpi_get_object(mvm->dev, ACPI_WRDS_METHOD);
	if (IS_ERR(data))
		return PTR_ERR(data);

	wifi_pkg = iwl_acpi_get_wifi_pkg(mvm->dev, data,
					 ACPI_WRDS_WIFI_DATA_SIZE);
	if (IS_ERR(wifi_pkg)) {
		ret = PTR_ERR(wifi_pkg);
		goto out_free;
	}

	if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER) {
		ret = -EINVAL;
		goto out_free;
	}

	enabled = !!(wifi_pkg->package.elements[1].integer.value);

	/* position of the actual table */
	table = &wifi_pkg->package.elements[2];

	/* The profile from WRDS is officially profile 1, but goes
	 * into sar_profiles[0] (because we don't have a profile 0).
	 */
	ret = iwl_mvm_sar_set_profile(mvm, table, &mvm->sar_profiles[0],
				      enabled);
out_free:
	kfree(data);
	return ret;
}

static int iwl_mvm_sar_get_ewrd_table(struct iwl_mvm *mvm)
{
	union acpi_object *wifi_pkg, *data;
	bool enabled;
	int i, n_profiles, ret;

	data = iwl_acpi_get_object(mvm->dev, ACPI_EWRD_METHOD);
	if (IS_ERR(data))
		return PTR_ERR(data);

	wifi_pkg = iwl_acpi_get_wifi_pkg(mvm->dev, data,
					 ACPI_EWRD_WIFI_DATA_SIZE);
	if (IS_ERR(wifi_pkg)) {
		ret = PTR_ERR(wifi_pkg);
		goto out_free;
	}

	if ((wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER) ||
	    (wifi_pkg->package.elements[2].type != ACPI_TYPE_INTEGER)) {
		ret = -EINVAL;
		goto out_free;
	}

	enabled = !!(wifi_pkg->package.elements[1].integer.value);
	n_profiles = wifi_pkg->package.elements[2].integer.value;

	/*
	 * Check the validity of n_profiles.  The EWRD profiles start
	 * from index 1, so the maximum value allowed here is
	 * ACPI_SAR_PROFILES_NUM - 1.
	 */
	if (n_profiles <= 0 || n_profiles >= ACPI_SAR_PROFILE_NUM) {
		ret = -EINVAL;
		goto out_free;
	}

	for (i = 0; i < n_profiles; i++) {
		/* the tables start at element 3 */
		static int pos = 3;

		/* The EWRD profiles officially go from 2 to 4, but we
		 * save them in sar_profiles[1-3] (because we don't
		 * have profile 0).  So in the array we start from 1.
		 */
		ret = iwl_mvm_sar_set_profile(mvm,
					      &wifi_pkg->package.elements[pos],
					      &mvm->sar_profiles[i + 1],
					      enabled);
		if (ret < 0)
			break;

		/* go to the next table */
		pos += ACPI_SAR_TABLE_SIZE;
	}

out_free:
	kfree(data);
	return ret;
}

static int iwl_mvm_sar_get_wgds_table(struct iwl_mvm *mvm)
{
	union acpi_object *wifi_pkg, *data;
	int i, j, ret;
	int idx = 1;

	data = iwl_acpi_get_object(mvm->dev, ACPI_WGDS_METHOD);
	if (IS_ERR(data))
		return PTR_ERR(data);

	wifi_pkg = iwl_acpi_get_wifi_pkg(mvm->dev, data,
					 ACPI_WGDS_WIFI_DATA_SIZE);
	if (IS_ERR(wifi_pkg)) {
		ret = PTR_ERR(wifi_pkg);
		goto out_free;
	}

	for (i = 0; i < ACPI_NUM_GEO_PROFILES; i++) {
		for (j = 0; j < ACPI_GEO_TABLE_SIZE; j++) {
			union acpi_object *entry;

			entry = &wifi_pkg->package.elements[idx++];
			if ((entry->type != ACPI_TYPE_INTEGER) ||
			    (entry->integer.value > U8_MAX)) {
				ret = -EINVAL;
				goto out_free;
			}

			mvm->geo_profiles[i].values[j] = entry->integer.value;
		}
	}
	ret = 0;
out_free:
	kfree(data);
	return ret;
}

int iwl_mvm_sar_select_profile(struct iwl_mvm *mvm, int prof_a, int prof_b)
{
	union {
		struct iwl_dev_tx_power_cmd v5;
		struct iwl_dev_tx_power_cmd_v4 v4;
	} cmd;
	int i, j, idx;
	int profs[ACPI_SAR_NUM_CHAIN_LIMITS] = { prof_a, prof_b };
	int len;

	BUILD_BUG_ON(ACPI_SAR_NUM_CHAIN_LIMITS < 2);
	BUILD_BUG_ON(ACPI_SAR_NUM_CHAIN_LIMITS * ACPI_SAR_NUM_SUB_BANDS !=
		     ACPI_SAR_TABLE_SIZE);

	cmd.v5.v3.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_CHAINS);

	if (fw_has_api(&mvm->fw->ucode_capa,
		       IWL_UCODE_TLV_API_REDUCE_TX_POWER))
		len = sizeof(cmd.v5);
	else if (fw_has_capa(&mvm->fw->ucode_capa,
			     IWL_UCODE_TLV_CAPA_TX_POWER_ACK))
		len = sizeof(cmd.v4);
	else
		len = sizeof(cmd.v4.v3);

	for (i = 0; i < ACPI_SAR_NUM_CHAIN_LIMITS; i++) {
		struct iwl_mvm_sar_profile *prof;

		/* don't allow SAR to be disabled (profile 0 means disable) */
		if (profs[i] == 0)
			return -EPERM;

		/* we are off by one, so allow up to ACPI_SAR_PROFILE_NUM */
		if (profs[i] > ACPI_SAR_PROFILE_NUM)
			return -EINVAL;

		/* profiles go from 1 to 4, so decrement to access the array */
		prof = &mvm->sar_profiles[profs[i] - 1];

		/* if the profile is disabled, do nothing */
		if (!prof->enabled) {
			IWL_DEBUG_RADIO(mvm, "SAR profile %d is disabled.\n",
					profs[i]);
			/* if one of the profiles is disabled, we fail all */
			return -ENOENT;
		}

		IWL_DEBUG_RADIO(mvm, "  Chain[%d]:\n", i);
		for (j = 0; j < ACPI_SAR_NUM_SUB_BANDS; j++) {
			idx = (i * ACPI_SAR_NUM_SUB_BANDS) + j;
			cmd.v5.v3.per_chain_restriction[i][j] =
				cpu_to_le16(prof->table[idx]);
			IWL_DEBUG_RADIO(mvm, "    Band[%d] = %d * .125dBm\n",
					j, prof->table[idx]);
		}
	}

	IWL_DEBUG_RADIO(mvm, "Sending REDUCE_TX_POWER_CMD per chain\n");

	return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
}

int iwl_mvm_get_sar_geo_profile(struct iwl_mvm *mvm)
{
	struct iwl_geo_tx_power_profiles_resp *resp;
	int ret;

	struct iwl_geo_tx_power_profiles_cmd geo_cmd = {
		.ops = cpu_to_le32(IWL_PER_CHAIN_OFFSET_GET_CURRENT_TABLE),
	};
	struct iwl_host_cmd cmd = {
		.id =  WIDE_ID(PHY_OPS_GROUP, GEO_TX_POWER_LIMIT),
		.len = { sizeof(geo_cmd), },
		.flags = CMD_WANT_SKB,
		.data = { &geo_cmd },
	};

	ret = iwl_mvm_send_cmd(mvm, &cmd);
	if (ret) {
		IWL_ERR(mvm, "Failed to get geographic profile info %d\n", ret);
		return ret;
	}

	resp = (void *)cmd.resp_pkt->data;
	ret = le32_to_cpu(resp->profile_idx);
	if (WARN_ON(ret > ACPI_NUM_GEO_PROFILES)) {
		ret = -EIO;
		IWL_WARN(mvm, "Invalid geographic profile idx (%d)\n", ret);
	}

	iwl_free_resp(&cmd);
	return ret;
}

static int iwl_mvm_sar_geo_init(struct iwl_mvm *mvm)
{
	struct iwl_geo_tx_power_profiles_cmd cmd = {
		.ops = cpu_to_le32(IWL_PER_CHAIN_OFFSET_SET_TABLES),
	};
	int ret, i, j;
	u16 cmd_wide_id =  WIDE_ID(PHY_OPS_GROUP, GEO_TX_POWER_LIMIT);

	ret = iwl_mvm_sar_get_wgds_table(mvm);
	if (ret < 0) {
		IWL_DEBUG_RADIO(mvm,
				"Geo SAR BIOS table invalid or unavailable. (%d)\n",
				ret);
		/* we don't fail if the table is not available */
		return 0;
	}

	IWL_DEBUG_RADIO(mvm, "Sending GEO_TX_POWER_LIMIT\n");

	BUILD_BUG_ON(ACPI_NUM_GEO_PROFILES * ACPI_WGDS_NUM_BANDS *
		     ACPI_WGDS_TABLE_SIZE !=  ACPI_WGDS_WIFI_DATA_SIZE);

	BUILD_BUG_ON(ACPI_NUM_GEO_PROFILES > IWL_NUM_GEO_PROFILES);

	for (i = 0; i < ACPI_NUM_GEO_PROFILES; i++) {
		struct iwl_per_chain_offset *chain =
			(struct iwl_per_chain_offset *)&cmd.table[i];

		for (j = 0; j < ACPI_WGDS_NUM_BANDS; j++) {
			u8 *value;

			value = &mvm->geo_profiles[i].values[j *
				ACPI_GEO_PER_CHAIN_SIZE];
			chain[j].max_tx_power = cpu_to_le16(value[0]);
			chain[j].chain_a = value[1];
			chain[j].chain_b = value[2];
			IWL_DEBUG_RADIO(mvm,
					"SAR geographic profile[%d] Band[%d]: chain A = %d chain B = %d max_tx_power = %d\n",
					i, j, value[1], value[2], value[0]);
		}
	}
	return iwl_mvm_send_cmd_pdu(mvm, cmd_wide_id, 0, sizeof(cmd), &cmd);
}

#else /* CONFIG_ACPI */
static int iwl_mvm_sar_get_wrds_table(struct iwl_mvm *mvm)
{
	return -ENOENT;
}

static int iwl_mvm_sar_get_ewrd_table(struct iwl_mvm *mvm)
{
	return -ENOENT;
}

static int iwl_mvm_sar_geo_init(struct iwl_mvm *mvm)
{
	return 0;
}

int iwl_mvm_sar_select_profile(struct iwl_mvm *mvm, int prof_a,
			       int prof_b)
{
	return -ENOENT;
}

int iwl_mvm_get_sar_geo_profile(struct iwl_mvm *mvm)
{
	return -ENOENT;
}
#endif /* CONFIG_ACPI */

static int iwl_mvm_sar_init(struct iwl_mvm *mvm)
{
	int ret;

	ret = iwl_mvm_sar_get_wrds_table(mvm);
	if (ret < 0) {
		IWL_DEBUG_RADIO(mvm,
				"WRDS SAR BIOS table invalid or unavailable. (%d)\n",
				ret);
		/* if not available, don't fail and don't bother with EWRD */
		return 0;
	}

	ret = iwl_mvm_sar_get_ewrd_table(mvm);
	/* if EWRD is not available, we can still use WRDS, so don't fail */
	if (ret < 0)
		IWL_DEBUG_RADIO(mvm,
				"EWRD SAR BIOS table invalid or unavailable. (%d)\n",
				ret);

	/* choose profile 1 (WRDS) as default for both chains */
	ret = iwl_mvm_sar_select_profile(mvm, 1, 1);

	/* if we don't have profile 0 from BIOS, just skip it */
	if (ret == -ENOENT)
		return 0;

	return ret;
}

static int iwl_mvm_load_rt_fw(struct iwl_mvm *mvm)
{
	int ret;

	if (iwl_mvm_has_unified_ucode(mvm))
		return iwl_run_unified_mvm_ucode(mvm, false);

	ret = iwl_run_init_mvm_ucode(mvm, false);

	if (ret) {
		IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", ret);

		if (iwlmvm_mod_params.init_dbg)
			return 0;
		return ret;
	}

	/*
	 * Stop and start the transport without entering low power
	 * mode. This will save the state of other components on the
	 * device that are triggered by the INIT firwmare (MFUART).
	 */
	_iwl_trans_stop_device(mvm->trans, false);
	ret = _iwl_trans_start_hw(mvm->trans, false);
	if (ret)
		return ret;

	ret = iwl_mvm_load_ucode_wait_alive(mvm, IWL_UCODE_REGULAR);
	if (ret)
		return ret;

	return iwl_init_paging(&mvm->fwrt, mvm->fwrt.cur_fw_img);
}

int iwl_mvm_up(struct iwl_mvm *mvm)
{
	int ret, i;
	struct ieee80211_channel *chan;
	struct cfg80211_chan_def chandef;

	lockdep_assert_held(&mvm->mutex);

	ret = iwl_trans_start_hw(mvm->trans);
	if (ret)
		return ret;

	ret = iwl_mvm_load_rt_fw(mvm);
	if (ret) {
		IWL_ERR(mvm, "Failed to start RT ucode: %d\n", ret);
		iwl_fw_assert_error_dump(&mvm->fwrt);
		goto error;
	}

	iwl_get_shared_mem_conf(&mvm->fwrt);

	ret = iwl_mvm_sf_update(mvm, NULL, false);
	if (ret)
		IWL_ERR(mvm, "Failed to initialize Smart Fifo\n");

	mvm->fwrt.dump.conf = FW_DBG_INVALID;
	/* if we have a destination, assume EARLY START */
	if (mvm->fw->dbg.dest_tlv)
		mvm->fwrt.dump.conf = FW_DBG_START_FROM_ALIVE;
	iwl_fw_start_dbg_conf(&mvm->fwrt, FW_DBG_START_FROM_ALIVE);

	ret = iwl_send_tx_ant_cfg(mvm, iwl_mvm_get_valid_tx_ant(mvm));
	if (ret)
		goto error;

	if (!iwl_mvm_has_unified_ucode(mvm)) {
		/* Send phy db control command and then phy db calibration */
		ret = iwl_send_phy_db_data(mvm->phy_db);
		if (ret)
			goto error;

		ret = iwl_send_phy_cfg_cmd(mvm);
		if (ret)
			goto error;
	}

	ret = iwl_mvm_send_bt_init_conf(mvm);
	if (ret)
		goto error;

	/* Init RSS configuration */
	if (mvm->trans->cfg->device_family >= IWL_DEVICE_FAMILY_22000) {
		ret = iwl_configure_rxq(mvm);
		if (ret) {
			IWL_ERR(mvm, "Failed to configure RX queues: %d\n",
				ret);
			goto error;
		}
	}

	if (iwl_mvm_has_new_rx_api(mvm)) {
		ret = iwl_send_rss_cfg_cmd(mvm);
		if (ret) {
			IWL_ERR(mvm, "Failed to configure RSS queues: %d\n",
				ret);
			goto error;
		}
	}

	/* init the fw <-> mac80211 STA mapping */
	for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++)
		RCU_INIT_POINTER(mvm->fw_id_to_mac_id[i], NULL);

	mvm->tdls_cs.peer.sta_id = IWL_MVM_INVALID_STA;

	/* reset quota debouncing buffer - 0xff will yield invalid data */
	memset(&mvm->last_quota_cmd, 0xff, sizeof(mvm->last_quota_cmd));

	ret = iwl_mvm_send_dqa_cmd(mvm);
	if (ret)
		goto error;

	/* Add auxiliary station for scanning */
	ret = iwl_mvm_add_aux_sta(mvm);
	if (ret)
		goto error;

	/* Add all the PHY contexts */
	chan = &mvm->hw->wiphy->bands[NL80211_BAND_2GHZ]->channels[0];
	cfg80211_chandef_create(&chandef, chan, NL80211_CHAN_NO_HT);
	for (i = 0; i < NUM_PHY_CTX; i++) {
		/*
		 * The channel used here isn't relevant as it's
		 * going to be overwritten in the other flows.
		 * For now use the first channel we have.
		 */
		ret = iwl_mvm_phy_ctxt_add(mvm, &mvm->phy_ctxts[i],
					   &chandef, 1, 1);
		if (ret)
			goto error;
	}

#ifdef CONFIG_THERMAL
	if (iwl_mvm_is_tt_in_fw(mvm)) {
		/* in order to give the responsibility of ct-kill and
		 * TX backoff to FW we need to send empty temperature reporting
		 * cmd during init time
		 */
		iwl_mvm_send_temp_report_ths_cmd(mvm);
	} else {
		/* Initialize tx backoffs to the minimal possible */
		iwl_mvm_tt_tx_backoff(mvm, 0);
	}

	/* TODO: read the budget from BIOS / Platform NVM */

	/*
	 * In case there is no budget from BIOS / Platform NVM the default
	 * budget should be 2000mW (cooling state 0).
	 */
	if (iwl_mvm_is_ctdp_supported(mvm)) {
		ret = iwl_mvm_ctdp_command(mvm, CTDP_CMD_OPERATION_START,
					   mvm->cooling_dev.cur_state);
		if (ret)
			goto error;
	}
#else
	/* Initialize tx backoffs to the minimal possible */
	iwl_mvm_tt_tx_backoff(mvm, 0);
#endif

	WARN_ON(iwl_mvm_config_ltr(mvm));

	ret = iwl_mvm_power_update_device(mvm);
	if (ret)
		goto error;

	/*
	 * RTNL is not taken during Ct-kill, but we don't need to scan/Tx
	 * anyway, so don't init MCC.
	 */
	if (!test_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status)) {
		ret = iwl_mvm_init_mcc(mvm);
		if (ret)
			goto error;
	}

	if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
		mvm->scan_type = IWL_SCAN_TYPE_NOT_SET;
		mvm->hb_scan_type = IWL_SCAN_TYPE_NOT_SET;
		ret = iwl_mvm_config_scan(mvm);
		if (ret)
			goto error;
	}

	/* allow FW/transport low power modes if not during restart */
	if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
		iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);

	ret = iwl_mvm_sar_init(mvm);
	if (ret)
		goto error;

	ret = iwl_mvm_sar_geo_init(mvm);
	if (ret)
		goto error;

	iwl_mvm_leds_sync(mvm);

	IWL_DEBUG_INFO(mvm, "RT uCode started.\n");
	return 0;
 error:
	if (!iwlmvm_mod_params.init_dbg || !ret)
		iwl_mvm_stop_device(mvm);
	return ret;
}

int iwl_mvm_load_d3_fw(struct iwl_mvm *mvm)
{
	int ret, i;

	lockdep_assert_held(&mvm->mutex);

	ret = iwl_trans_start_hw(mvm->trans);
	if (ret)
		return ret;

	ret = iwl_mvm_load_ucode_wait_alive(mvm, IWL_UCODE_WOWLAN);
	if (ret) {
		IWL_ERR(mvm, "Failed to start WoWLAN firmware: %d\n", ret);
		goto error;
	}

	ret = iwl_send_tx_ant_cfg(mvm, iwl_mvm_get_valid_tx_ant(mvm));
	if (ret)
		goto error;

	/* Send phy db control command and then phy db calibration*/
	ret = iwl_send_phy_db_data(mvm->phy_db);
	if (ret)
		goto error;

	ret = iwl_send_phy_cfg_cmd(mvm);
	if (ret)
		goto error;

	/* init the fw <-> mac80211 STA mapping */
	for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++)
		RCU_INIT_POINTER(mvm->fw_id_to_mac_id[i], NULL);

	/* Add auxiliary station for scanning */
	ret = iwl_mvm_add_aux_sta(mvm);
	if (ret)
		goto error;

	return 0;
 error:
	iwl_mvm_stop_device(mvm);
	return ret;
}

void iwl_mvm_rx_card_state_notif(struct iwl_mvm *mvm,
				 struct iwl_rx_cmd_buffer *rxb)
{
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
	struct iwl_card_state_notif *card_state_notif = (void *)pkt->data;
	u32 flags = le32_to_cpu(card_state_notif->flags);

	IWL_DEBUG_RF_KILL(mvm, "Card state received: HW:%s SW:%s CT:%s\n",
			  (flags & HW_CARD_DISABLED) ? "Kill" : "On",
			  (flags & SW_CARD_DISABLED) ? "Kill" : "On",
			  (flags & CT_KILL_CARD_DISABLED) ?
			  "Reached" : "Not reached");
}

void iwl_mvm_rx_mfuart_notif(struct iwl_mvm *mvm,
			     struct iwl_rx_cmd_buffer *rxb)
{
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
	struct iwl_mfuart_load_notif *mfuart_notif = (void *)pkt->data;

	IWL_DEBUG_INFO(mvm,
		       "MFUART: installed ver: 0x%08x, external ver: 0x%08x, status: 0x%08x, duration: 0x%08x\n",
		       le32_to_cpu(mfuart_notif->installed_ver),
		       le32_to_cpu(mfuart_notif->external_ver),
		       le32_to_cpu(mfuart_notif->status),
		       le32_to_cpu(mfuart_notif->duration));

	if (iwl_rx_packet_payload_len(pkt) == sizeof(*mfuart_notif))
		IWL_DEBUG_INFO(mvm,
			       "MFUART: image size: 0x%08x\n",
			       le32_to_cpu(mfuart_notif->image_size));
}