[deliverable/linux.git] / drivers / net / wireless / iwlwifi / mvm / 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 - 2014 Intel Mobile Communications GmbH
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
 * USA
 *
 * The full GNU General Public License is included in this distribution
 * in the file called COPYING.
 *
 * Contact Information:
 *  Intel Linux Wireless <ilw@linux.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 - 2014 Intel Mobile Communications GmbH
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *  * Neither the name Intel Corporation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *****************************************************************************/
#include <net/mac80211.h>

#include "iwl-trans.h"
#include "iwl-op-mode.h"
#include "iwl-fw.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-eeprom-parse.h"

#include "mvm.h"
#include "iwl-phy-db.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 inline const struct fw_img *
iwl_get_ucode_image(struct iwl_mvm *mvm, enum iwl_ucode_type ucode_type)
{
	if (ucode_type >= IWL_UCODE_TYPE_MAX)
		return NULL;

	return &mvm->fw->img[ucode_type];
}

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 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 *palive;
	struct mvm_alive_resp_ver2 *palive2;

	if (iwl_rx_packet_payload_len(pkt) == sizeof(*palive)) {
		palive = (void *)pkt->data;

		mvm->support_umac_log = false;
		mvm->error_event_table =
			le32_to_cpu(palive->error_event_table_ptr);
		mvm->log_event_table = le32_to_cpu(palive->log_event_table_ptr);
		alive_data->scd_base_addr = le32_to_cpu(palive->scd_base_ptr);

		alive_data->valid = le16_to_cpu(palive->status) ==
				    IWL_ALIVE_STATUS_OK;
		IWL_DEBUG_FW(mvm,
			     "Alive VER1 ucode status 0x%04x revision 0x%01X 0x%01X flags 0x%01X\n",
			     le16_to_cpu(palive->status), palive->ver_type,
			     palive->ver_subtype, palive->flags);
	} else {
		palive2 = (void *)pkt->data;

		mvm->error_event_table =
			le32_to_cpu(palive2->error_event_table_ptr);
		mvm->log_event_table =
			le32_to_cpu(palive2->log_event_table_ptr);
		alive_data->scd_base_addr = le32_to_cpu(palive2->scd_base_ptr);
		mvm->umac_error_event_table =
			le32_to_cpu(palive2->error_info_addr);
		mvm->sf_space.addr = le32_to_cpu(palive2->st_fwrd_addr);
		mvm->sf_space.size = le32_to_cpu(palive2->st_fwrd_size);

		alive_data->valid = le16_to_cpu(palive2->status) ==
				    IWL_ALIVE_STATUS_OK;
		if (mvm->umac_error_event_table)
			mvm->support_umac_log = true;

		IWL_DEBUG_FW(mvm,
			     "Alive VER2 ucode status 0x%04x revision 0x%01X 0x%01X flags 0x%01X\n",
			     le16_to_cpu(palive2->status), palive2->ver_type,
			     palive2->ver_subtype, palive2->flags);

		IWL_DEBUG_FW(mvm,
			     "UMAC version: Major - 0x%x, Minor - 0x%x\n",
			     palive2->umac_major, palive2->umac_minor);
	}

	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, GFP_ATOMIC));

	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->cur_ucode;
	static const u8 alive_cmd[] = { MVM_ALIVE };
	struct iwl_sf_region st_fwrd_space;

	fw = iwl_get_ucode_image(mvm, ucode_type);
	if (WARN_ON(!fw))
		return -EINVAL;
	mvm->cur_ucode = ucode_type;
	mvm->ucode_loaded = false;

	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) {
		mvm->cur_ucode = 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) {
		mvm->cur_ucode = old_type;
		return ret;
	}

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

	/*
	 * update the sdio allocation according to the pointer we get in the
	 * alive notification.
	 */
	st_fwrd_space.addr = mvm->sf_space.addr;
	st_fwrd_space.size = mvm->sf_space.size;
	ret = iwl_trans_update_sf(mvm->trans, &st_fwrd_space);
	if (ret) {
		IWL_ERR(mvm, "Failed to update SF size. ret %d\n", ret);
		return ret;
	}

	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.
	 */

	for (i = 0; i < IWL_MAX_HW_QUEUES; i++) {
		if (i < mvm->first_agg_queue && i != IWL_MVM_CMD_QUEUE)
			mvm->queue_to_mac80211[i] = i;
		else
			mvm->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;
	}

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

	mvm->ucode_loaded = true;

	return 0;
}

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->cur_ucode;

	/* Set parameters */
	phy_cfg_cmd.phy_cfg = cpu_to_le32(mvm->fw->phy_config);
	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 u8 init_complete[] = {
		INIT_COMPLETE_NOTIF,
		CALIB_RES_NOTIF_PHY_DB
	};
	int ret;

	lockdep_assert_held(&mvm->mutex);

	if (WARN_ON_ONCE(mvm->init_ucode_complete))
		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 error;
	}

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

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

	/* 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);

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

	/*
	 * 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_killed(mvm)) {
		IWL_DEBUG_RF_KILL(mvm,
				  "jump over all phy activities due to RF kill\n");
		iwl_remove_notification(&mvm->notif_wait, &calib_wait);
		ret = 1;
		goto out;
	}

	/* Send TX valid antennas before triggering calibrations */
	ret = iwl_send_tx_ant_cfg(mvm, mvm->fw->valid_tx_ant);
	if (ret)
		goto error;

	/*
	 * Send phy configurations command to init uCode
	 * to start the 16.0 uCode init image internal calibrations.
	 */
	ret = iwl_send_phy_cfg_cmd(mvm);
	if (ret) {
		IWL_ERR(mvm, "Failed to run INIT calibrations: %d\n",
			ret);
		goto error;
	}

	/*
	 * 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)
		mvm->init_ucode_complete = true;
	goto out;

error:
	iwl_remove_notification(&mvm->notif_wait, &calib_wait);
out:
	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;
}

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;

	/*
	 * If we haven't completed the run of the init ucode during
	 * module loading, load init ucode now
	 * (for example, if we were in RFKILL)
	 */
	if (!mvm->init_ucode_complete) {
		ret = iwl_run_init_mvm_ucode(mvm, false);
		if (ret && !iwlmvm_mod_params.init_dbg) {
			IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", ret);
			/* this can't happen */
			if (WARN_ON(ret > 0))
				ret = -ERFKILL;
			goto error;
		}
		if (!iwlmvm_mod_params.init_dbg) {
			/*
			 * should stop and start HW since that INIT
			 * image just loaded
			 */
			iwl_trans_stop_device(mvm->trans);
			ret = iwl_trans_start_hw(mvm->trans);
			if (ret)
				return ret;
		}
	}

	if (iwlmvm_mod_params.init_dbg)
		return 0;

	ret = iwl_mvm_load_ucode_wait_alive(mvm, IWL_UCODE_REGULAR);
	if (ret) {
		IWL_ERR(mvm, "Failed to start RT ucode: %d\n", ret);
		goto error;
	}

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

	ret = iwl_send_tx_ant_cfg(mvm, mvm->fw->valid_tx_ant);
	if (ret)
		goto error;

	ret = iwl_send_bt_init_conf(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 < IWL_MVM_STATION_COUNT; i++)
		RCU_INIT_POINTER(mvm->fw_id_to_mac_id[i], NULL);

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

	/* 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[IEEE80211_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;
	}

	/* Initialize tx backoffs to the minimal possible */
	iwl_mvm_tt_tx_backoff(mvm, 0);

	if (mvm->trans->ltr_enabled) {
		struct iwl_ltr_config_cmd cmd = {
			.flags = cpu_to_le32(LTR_CFG_FLAG_FEATURE_ENABLE),
		};

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

	ret = iwl_mvm_power_update_device(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);

	IWL_DEBUG_INFO(mvm, "RT uCode started.\n");
	return 0;
 error:
	iwl_trans_stop_device(mvm->trans);
	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, mvm->fw->valid_tx_ant);
	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 < IWL_MVM_STATION_COUNT; 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_trans_stop_device(mvm->trans);
	return ret;
}

int iwl_mvm_rx_card_state_notif(struct iwl_mvm *mvm,
				    struct iwl_rx_cmd_buffer *rxb,
				    struct iwl_device_cmd *cmd)
{
	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");

	return 0;
}

int iwl_mvm_rx_radio_ver(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
			 struct iwl_device_cmd *cmd)
{
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
	struct iwl_radio_version_notif *radio_version = (void *)pkt->data;

	/* TODO: what to do with that? */
	IWL_DEBUG_INFO(mvm,
		       "Radio version: flavor: 0x%08x, step 0x%08x, dash 0x%08x\n",
		       le32_to_cpu(radio_version->radio_flavor),
		       le32_to_cpu(radio_version->radio_step),
		       le32_to_cpu(radio_version->radio_dash));
	return 0;
}
Commit	Line	Data
8ca151b5 JB	1	/******************************************************************************
	2	*
	3	* This file is provided under a dual BSD/GPLv2 license. When using or
	4	* redistributing this file, you may do so under either license.
	5	*
	6	* GPL LICENSE SUMMARY
	7	*
51368bf7	8	* Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
8b4139dc	9	* Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
8ca151b5 JB	10	*
	11	* This program is free software; you can redistribute it and/or modify
	12	* it under the terms of version 2 of the GNU General Public License as
	13	* published by the Free Software Foundation.
	14	*
	15	* This program is distributed in the hope that it will be useful, but
	16	* WITHOUT ANY WARRANTY; without even the implied warranty of
	17	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	18	* General Public License for more details.
	19	*
	20	* You should have received a copy of the GNU General Public License
	21	* along with this program; if not, write to the Free Software
	22	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
	23	* USA
	24	*
	25	* The full GNU General Public License is included in this distribution
410dc5aa	26	* in the file called COPYING.
8ca151b5 JB	27	*
	28	* Contact Information:
	29	* Intel Linux Wireless <ilw@linux.intel.com>
	30	* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
	31	*
	32	* BSD LICENSE
	33	*
51368bf7	34	* Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
8b4139dc	35	* Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
8ca151b5 JB	36	* All rights reserved.
	37	*
	38	* Redistribution and use in source and binary forms, with or without
	39	* modification, are permitted provided that the following conditions
	40	* are met:
	41	*
	42	* * Redistributions of source code must retain the above copyright
	43	* notice, this list of conditions and the following disclaimer.
	44	* * Redistributions in binary form must reproduce the above copyright
	45	* notice, this list of conditions and the following disclaimer in
	46	* the documentation and/or other materials provided with the
	47	* distribution.
	48	* * Neither the name Intel Corporation nor the names of its
	49	* contributors may be used to endorse or promote products derived
	50	* from this software without specific prior written permission.
	51	*
	52	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	53	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	54	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
	55	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	56	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	57	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	58	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	59	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	60	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	61	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	62	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	63	*
	64	*****************************************************************************/
	65	#include <net/mac80211.h>
	66
	67	#include "iwl-trans.h"
	68	#include "iwl-op-mode.h"
	69	#include "iwl-fw.h"
	70	#include "iwl-debug.h"
	71	#include "iwl-csr.h" /* for iwl_mvm_rx_card_state_notif */
	72	#include "iwl-io.h" /* for iwl_mvm_rx_card_state_notif */
	73	#include "iwl-eeprom-parse.h"
	74
	75	#include "mvm.h"
	76	#include "iwl-phy-db.h"
	77
	78	#define MVM_UCODE_ALIVE_TIMEOUT HZ
	79	#define MVM_UCODE_CALIB_TIMEOUT (2*HZ)
	80
	81	#define UCODE_VALID_OK cpu_to_le32(0x1)
	82
8ca151b5 JB	83	struct iwl_mvm_alive_data {
	84	bool valid;
	85	u32 scd_base_addr;
	86	};
	87
	88	static inline const struct fw_img *
	89	iwl_get_ucode_image(struct iwl_mvm *mvm, enum iwl_ucode_type ucode_type)
	90	{
	91	if (ucode_type >= IWL_UCODE_TYPE_MAX)
	92	return NULL;
	93
	94	return &mvm->fw->img[ucode_type];
	95	}
	96
	97	static int iwl_send_tx_ant_cfg(struct iwl_mvm *mvm, u8 valid_tx_ant)
	98	{
	99	struct iwl_tx_ant_cfg_cmd tx_ant_cmd = {
	100	.valid = cpu_to_le32(valid_tx_ant),
	101	};
	102
33223542	103	IWL_DEBUG_FW(mvm, "select valid tx ant: %u\n", valid_tx_ant);
a1022927	104	return iwl_mvm_send_cmd_pdu(mvm, TX_ANT_CONFIGURATION_CMD, 0,
8ca151b5 JB	105	sizeof(tx_ant_cmd), &tx_ant_cmd);
	106	}
	107
	108	static bool iwl_alive_fn(struct iwl_notif_wait_data *notif_wait,
	109	struct iwl_rx_packet pkt, void data)
	110	{
	111	struct iwl_mvm *mvm =
	112	container_of(notif_wait, struct iwl_mvm, notif_wait);
	113	struct iwl_mvm_alive_data *alive_data = data;
	114	struct mvm_alive_resp *palive;
01a9ca51 EH	115	struct mvm_alive_resp_ver2 *palive2;
	116
	117	if (iwl_rx_packet_payload_len(pkt) == sizeof(*palive)) {
	118	palive = (void *)pkt->data;
	119
	120	mvm->support_umac_log = false;
	121	mvm->error_event_table =
	122	le32_to_cpu(palive->error_event_table_ptr);
	123	mvm->log_event_table = le32_to_cpu(palive->log_event_table_ptr);
	124	alive_data->scd_base_addr = le32_to_cpu(palive->scd_base_ptr);
	125
	126	alive_data->valid = le16_to_cpu(palive->status) ==
	127	IWL_ALIVE_STATUS_OK;
	128	IWL_DEBUG_FW(mvm,
	129	"Alive VER1 ucode status 0x%04x revision 0x%01X 0x%01X flags 0x%01X\n",
	130	le16_to_cpu(palive->status), palive->ver_type,
	131	palive->ver_subtype, palive->flags);
	132	} else {
	133	palive2 = (void *)pkt->data;
	134
01a9ca51 EH	135	mvm->error_event_table =
	136	le32_to_cpu(palive2->error_event_table_ptr);
	137	mvm->log_event_table =
	138	le32_to_cpu(palive2->log_event_table_ptr);
	139	alive_data->scd_base_addr = le32_to_cpu(palive2->scd_base_ptr);
	140	mvm->umac_error_event_table =
	141	le32_to_cpu(palive2->error_info_addr);
91479b64 EH	142	mvm->sf_space.addr = le32_to_cpu(palive2->st_fwrd_addr);
91479b64 EH	143	mvm->sf_space.size = le32_to_cpu(palive2->st_fwrd_size);
01a9ca51 EH	144
	145	alive_data->valid = le16_to_cpu(palive2->status) ==
	146	IWL_ALIVE_STATUS_OK;
ffa70264 EG	147	if (mvm->umac_error_event_table)
	148	mvm->support_umac_log = true;
	149
01a9ca51 EH	150	IWL_DEBUG_FW(mvm,
	151	"Alive VER2 ucode status 0x%04x revision 0x%01X 0x%01X flags 0x%01X\n",
	152	le16_to_cpu(palive2->status), palive2->ver_type,
	153	palive2->ver_subtype, palive2->flags);
	154
	155	IWL_DEBUG_FW(mvm,
	156	"UMAC version: Major - 0x%x, Minor - 0x%x\n",
	157	palive2->umac_major, palive2->umac_minor);
	158	}
8ca151b5 JB	159
	160	return true;
	161	}
	162
	163	static bool iwl_wait_phy_db_entry(struct iwl_notif_wait_data *notif_wait,
	164	struct iwl_rx_packet pkt, void data)
	165	{
	166	struct iwl_phy_db *phy_db = data;
	167
	168	if (pkt->hdr.cmd != CALIB_RES_NOTIF_PHY_DB) {
	169	WARN_ON(pkt->hdr.cmd != INIT_COMPLETE_NOTIF);
	170	return true;
	171	}
	172
	173	WARN_ON(iwl_phy_db_set_section(phy_db, pkt, GFP_ATOMIC));
	174
	175	return false;
	176	}
	177
	178	static int iwl_mvm_load_ucode_wait_alive(struct iwl_mvm *mvm,
	179	enum iwl_ucode_type ucode_type)
	180	{
	181	struct iwl_notification_wait alive_wait;
	182	struct iwl_mvm_alive_data alive_data;
	183	const struct fw_img *fw;
	184	int ret, i;
	185	enum iwl_ucode_type old_type = mvm->cur_ucode;
	186	static const u8 alive_cmd[] = { MVM_ALIVE };
91479b64	187	struct iwl_sf_region st_fwrd_space;
8ca151b5	188
8ca151b5	189	fw = iwl_get_ucode_image(mvm, ucode_type);
befe9b6f	190	if (WARN_ON(!fw))
8ca151b5	191	return -EINVAL;
befe9b6f JB	192	mvm->cur_ucode = ucode_type;
befe9b6f JB	193	mvm->ucode_loaded = false;
8ca151b5 JB	194
	195	iwl_init_notification_wait(&mvm->notif_wait, &alive_wait,
	196	alive_cmd, ARRAY_SIZE(alive_cmd),
	197	iwl_alive_fn, &alive_data);
	198
	199	ret = iwl_trans_start_fw(mvm->trans, fw, ucode_type == IWL_UCODE_INIT);
	200	if (ret) {
	201	mvm->cur_ucode = old_type;
	202	iwl_remove_notification(&mvm->notif_wait, &alive_wait);
	203	return ret;
	204	}
	205
	206	/*
	207	* Some things may run in the background now, but we
	208	* just wait for the ALIVE notification here.
	209	*/
	210	ret = iwl_wait_notification(&mvm->notif_wait, &alive_wait,
	211	MVM_UCODE_ALIVE_TIMEOUT);
	212	if (ret) {
	213	mvm->cur_ucode = old_type;
	214	return ret;
	215	}
	216
	217	if (!alive_data.valid) {
	218	IWL_ERR(mvm, "Loaded ucode is not valid!\n");
	219	mvm->cur_ucode = old_type;
	220	return -EIO;
	221	}
	222
91479b64 EH	223	/*
	224	* update the sdio allocation according to the pointer we get in the
	225	* alive notification.
	226	*/
	227	st_fwrd_space.addr = mvm->sf_space.addr;
	228	st_fwrd_space.size = mvm->sf_space.size;
	229	ret = iwl_trans_update_sf(mvm->trans, &st_fwrd_space);
82e8aea0 ES	230	if (ret) {
	231	IWL_ERR(mvm, "Failed to update SF size. ret %d\n", ret);
	232	return ret;
	233	}
91479b64	234
8ca151b5 JB	235	iwl_trans_fw_alive(mvm->trans, alive_data.scd_base_addr);
	236
	237	/*
	238	* Note: all the queues are enabled as part of the interface
	239	* initialization, but in firmware restart scenarios they
	240	* could be stopped, so wake them up. In firmware restart,
	241	* mac80211 will have the queues stopped as well until the
	242	* reconfiguration completes. During normal startup, they
	243	* will be empty.
	244	*/
	245
	246	for (i = 0; i < IWL_MAX_HW_QUEUES; i++) {
19e737c9	247	if (i < mvm->first_agg_queue && i != IWL_MVM_CMD_QUEUE)
8ca151b5 JB	248	mvm->queue_to_mac80211[i] = i;
	249	else
	250	mvm->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;
8ca151b5 JB	251	}
8ca151b5 JB	252
df197c00 JB	253	for (i = 0; i < IEEE80211_MAX_QUEUES; i++)
df197c00 JB	254	atomic_set(&mvm->mac80211_queue_stop_count[i], 0);
8ca151b5 JB	255
	256	mvm->ucode_loaded = true;
	257
	258	return 0;
	259	}
8ca151b5 JB	260
	261	static int iwl_send_phy_cfg_cmd(struct iwl_mvm *mvm)
	262	{
	263	struct iwl_phy_cfg_cmd phy_cfg_cmd;
	264	enum iwl_ucode_type ucode_type = mvm->cur_ucode;
	265
	266	/* Set parameters */
6221d47c	267	phy_cfg_cmd.phy_cfg = cpu_to_le32(mvm->fw->phy_config);
8ca151b5 JB	268	phy_cfg_cmd.calib_control.event_trigger =
	269	mvm->fw->default_calib[ucode_type].event_trigger;
	270	phy_cfg_cmd.calib_control.flow_trigger =
	271	mvm->fw->default_calib[ucode_type].flow_trigger;
	272
	273	IWL_DEBUG_INFO(mvm, "Sending Phy CFG command: 0x%x\n",
	274	phy_cfg_cmd.phy_cfg);
	275
a1022927	276	return iwl_mvm_send_cmd_pdu(mvm, PHY_CONFIGURATION_CMD, 0,
8ca151b5 JB	277	sizeof(phy_cfg_cmd), &phy_cfg_cmd);
	278	}
	279
8ca151b5 JB	280	int iwl_run_init_mvm_ucode(struct iwl_mvm *mvm, bool read_nvm)
	281	{
	282	struct iwl_notification_wait calib_wait;
	283	static const u8 init_complete[] = {
	284	INIT_COMPLETE_NOTIF,
	285	CALIB_RES_NOTIF_PHY_DB
	286	};
	287	int ret;
	288
	289	lockdep_assert_held(&mvm->mutex);
	290
a4082843	291	if (WARN_ON_ONCE(mvm->init_ucode_complete))
8ca151b5 JB	292	return 0;
	293
	294	iwl_init_notification_wait(&mvm->notif_wait,
	295	&calib_wait,
	296	init_complete,
	297	ARRAY_SIZE(init_complete),
	298	iwl_wait_phy_db_entry,
	299	mvm->phy_db);
	300
	301	/* Will also start the device */
	302	ret = iwl_mvm_load_ucode_wait_alive(mvm, IWL_UCODE_INIT);
	303	if (ret) {
	304	IWL_ERR(mvm, "Failed to start INIT ucode: %d\n", ret);
	305	goto error;
	306	}
	307
ae397472	308	ret = iwl_send_bt_init_conf(mvm);
931d4160 EG	309	if (ret)
	310	goto error;
	311
81a67e32	312	/* Read the NVM only at driver load time, no need to do this twice */
8ca151b5 JB	313	if (read_nvm) {
8ca151b5 JB	314	/* Read nvm */
14b485f0	315	ret = iwl_nvm_init(mvm, true);
8ca151b5 JB	316	if (ret) {
	317	IWL_ERR(mvm, "Failed to read NVM: %d\n", ret);
	318	goto error;
	319	}
	320	}
	321
81a67e32	322	/* In case we read the NVM from external file, load it to the NIC */
e02a9d60	323	if (mvm->nvm_file_name)
81a67e32 EL	324	iwl_mvm_load_nvm_to_nic(mvm);
81a67e32 EL	325
8ca151b5 JB	326	ret = iwl_nvm_check_version(mvm->nvm_data, mvm->trans);
	327	WARN_ON(ret);
	328
4f59334b EH	329	/*
	330	* abort after reading the nvm in case RF Kill is on, we will complete
	331	* the init seq later when RF kill will switch to off
	332	*/
9ee718aa	333	if (iwl_mvm_is_radio_killed(mvm)) {
4f59334b EH	334	IWL_DEBUG_RF_KILL(mvm,
	335	"jump over all phy activities due to RF kill\n");
	336	iwl_remove_notification(&mvm->notif_wait, &calib_wait);
a4082843 AN	337	ret = 1;
a4082843 AN	338	goto out;
4f59334b EH	339	}
4f59334b EH	340
e07cbb53	341	/* Send TX valid antennas before triggering calibrations */
4ed735e7	342	ret = iwl_send_tx_ant_cfg(mvm, mvm->fw->valid_tx_ant);
e07cbb53 DS	343	if (ret)
	344	goto error;
	345
8ca151b5 JB	346	/*
	347	* Send phy configurations command to init uCode
	348	* to start the 16.0 uCode init image internal calibrations.
	349	*/
	350	ret = iwl_send_phy_cfg_cmd(mvm);
	351	if (ret) {
	352	IWL_ERR(mvm, "Failed to run INIT calibrations: %d\n",
	353	ret);
	354	goto error;
	355	}
	356
	357	/*
	358	* Some things may run in the background now, but we
	359	* just wait for the calibration complete notification.
	360	*/
	361	ret = iwl_wait_notification(&mvm->notif_wait, &calib_wait,
	362	MVM_UCODE_CALIB_TIMEOUT);
	363	if (!ret)
ff116373	364	mvm->init_ucode_complete = true;
8ca151b5 JB	365	goto out;
	366
	367	error:
	368	iwl_remove_notification(&mvm->notif_wait, &calib_wait);
	369	out:
a4082843	370	if (iwlmvm_mod_params.init_dbg && !mvm->nvm_data) {
8ca151b5 JB	371	/* we want to debug INIT and we have no NVM - fake */
	372	mvm->nvm_data = kzalloc(sizeof(struct iwl_nvm_data) +
	373	sizeof(struct ieee80211_channel) +
	374	sizeof(struct ieee80211_rate),
	375	GFP_KERNEL);
	376	if (!mvm->nvm_data)
	377	return -ENOMEM;
8ca151b5 JB	378	mvm->nvm_data->bands[0].channels = mvm->nvm_data->channels;
	379	mvm->nvm_data->bands[0].n_channels = 1;
	380	mvm->nvm_data->bands[0].n_bitrates = 1;
	381	mvm->nvm_data->bands[0].bitrates =
	382	(void *)mvm->nvm_data->channels + 1;
	383	mvm->nvm_data->bands[0].bitrates->hw_value = 10;
	384	}
	385
	386	return ret;
	387	}
	388
8ca151b5 JB	389	int iwl_mvm_up(struct iwl_mvm *mvm)
	390	{
	391	int ret, i;
53a9d61e IP	392	struct ieee80211_channel *chan;
53a9d61e IP	393	struct cfg80211_chan_def chandef;
8ca151b5 JB	394
	395	lockdep_assert_held(&mvm->mutex);
	396
	397	ret = iwl_trans_start_hw(mvm->trans);
	398	if (ret)
	399	return ret;
	400
ff116373 EL	401	/*
	402	* If we haven't completed the run of the init ucode during
	403	* module loading, load init ucode now
	404	* (for example, if we were in RFKILL)
	405	*/
	406	if (!mvm->init_ucode_complete) {
8ca151b5 JB	407	ret = iwl_run_init_mvm_ucode(mvm, false);
	408	if (ret && !iwlmvm_mod_params.init_dbg) {
	409	IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", ret);
4f59334b EH	410	/* this can't happen */
	411	if (WARN_ON(ret > 0))
	412	ret = -ERFKILL;
8ca151b5 JB	413	goto error;
8ca151b5 JB	414	}
a4082843 AN	415	if (!iwlmvm_mod_params.init_dbg) {
	416	/*
	417	* should stop and start HW since that INIT
	418	* image just loaded
	419	*/
	420	iwl_trans_stop_device(mvm->trans);
	421	ret = iwl_trans_start_hw(mvm->trans);
	422	if (ret)
	423	return ret;
	424	}
8ca151b5 JB	425	}
	426
	427	if (iwlmvm_mod_params.init_dbg)
	428	return 0;
	429
	430	ret = iwl_mvm_load_ucode_wait_alive(mvm, IWL_UCODE_REGULAR);
	431	if (ret) {
	432	IWL_ERR(mvm, "Failed to start RT ucode: %d\n", ret);
	433	goto error;
	434	}
	435
1f3b0ff8 LE	436	ret = iwl_mvm_sf_update(mvm, NULL, false);
	437	if (ret)
	438	IWL_ERR(mvm, "Failed to initialize Smart Fifo\n");
	439
4ed735e7	440	ret = iwl_send_tx_ant_cfg(mvm, mvm->fw->valid_tx_ant);
8ca151b5 JB	441	if (ret)
	442	goto error;
	443
931d4160 EG	444	ret = iwl_send_bt_init_conf(mvm);
	445	if (ret)
	446	goto error;
	447
8ca151b5 JB	448	/* Send phy db control command and then phy db calibration*/
	449	ret = iwl_send_phy_db_data(mvm->phy_db);
	450	if (ret)
	451	goto error;
	452
	453	ret = iwl_send_phy_cfg_cmd(mvm);
	454	if (ret)
	455	goto error;
	456
	457	/* init the fw <-> mac80211 STA mapping */
	458	for (i = 0; i < IWL_MVM_STATION_COUNT; i++)
	459	RCU_INIT_POINTER(mvm->fw_id_to_mac_id[i], NULL);
	460
b2b7875b JB	461	/* reset quota debouncing buffer - 0xff will yield invalid data */
	462	memset(&mvm->last_quota_cmd, 0xff, sizeof(mvm->last_quota_cmd));
	463
8ca151b5 JB	464	/* Add auxiliary station for scanning */
	465	ret = iwl_mvm_add_aux_sta(mvm);
	466	if (ret)
	467	goto error;
	468
53a9d61e IP	469	/* Add all the PHY contexts */
	470	chan = &mvm->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels[0];
	471	cfg80211_chandef_create(&chandef, chan, NL80211_CHAN_NO_HT);
	472	for (i = 0; i < NUM_PHY_CTX; i++) {
	473	/*
	474	* The channel used here isn't relevant as it's
	475	* going to be overwritten in the other flows.
	476	* For now use the first channel we have.
	477	*/
	478	ret = iwl_mvm_phy_ctxt_add(mvm, &mvm->phy_ctxts[i],
	479	&chandef, 1, 1);
	480	if (ret)
	481	goto error;
	482	}
8ca151b5	483
0c0e2c71 IY	484	/* Initialize tx backoffs to the minimal possible */
	485	iwl_mvm_tt_tx_backoff(mvm, 0);
	486
9180ac50 EG	487	if (mvm->trans->ltr_enabled) {
	488	struct iwl_ltr_config_cmd cmd = {
	489	.flags = cpu_to_le32(LTR_CFG_FLAG_FEATURE_ENABLE),
	490	};
	491
	492	WARN_ON(iwl_mvm_send_cmd_pdu(mvm, LTR_CONFIG, 0,
	493	sizeof(cmd), &cmd));
	494	}
	495
c1cb92fc	496	ret = iwl_mvm_power_update_device(mvm);
64b928c4 AB	497	if (ret)
	498	goto error;
	499
7498cf4c EP	500	/* allow FW/transport low power modes if not during restart */
	501	if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
	502	iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
	503
53a9d61e	504	IWL_DEBUG_INFO(mvm, "RT uCode started.\n");
8ca151b5 JB	505	return 0;
	506	error:
	507	iwl_trans_stop_device(mvm->trans);
	508	return ret;
	509	}
	510
	511	int iwl_mvm_load_d3_fw(struct iwl_mvm *mvm)
	512	{
	513	int ret, i;
	514
	515	lockdep_assert_held(&mvm->mutex);
	516
	517	ret = iwl_trans_start_hw(mvm->trans);
	518	if (ret)
	519	return ret;
	520
	521	ret = iwl_mvm_load_ucode_wait_alive(mvm, IWL_UCODE_WOWLAN);
	522	if (ret) {
	523	IWL_ERR(mvm, "Failed to start WoWLAN firmware: %d\n", ret);
	524	goto error;
	525	}
	526
4ed735e7	527	ret = iwl_send_tx_ant_cfg(mvm, mvm->fw->valid_tx_ant);
8ca151b5 JB	528	if (ret)
	529	goto error;
	530
	531	/* Send phy db control command and then phy db calibration*/
	532	ret = iwl_send_phy_db_data(mvm->phy_db);
	533	if (ret)
	534	goto error;
	535
	536	ret = iwl_send_phy_cfg_cmd(mvm);
	537	if (ret)
	538	goto error;
	539
	540	/* init the fw <-> mac80211 STA mapping */
	541	for (i = 0; i < IWL_MVM_STATION_COUNT; i++)
	542	RCU_INIT_POINTER(mvm->fw_id_to_mac_id[i], NULL);
	543
	544	/* Add auxiliary station for scanning */
	545	ret = iwl_mvm_add_aux_sta(mvm);
	546	if (ret)
	547	goto error;
	548
	549	return 0;
	550	error:
	551	iwl_trans_stop_device(mvm->trans);
	552	return ret;
	553	}
	554
	555	int iwl_mvm_rx_card_state_notif(struct iwl_mvm *mvm,
	556	struct iwl_rx_cmd_buffer *rxb,
	557	struct iwl_device_cmd *cmd)
	558	{
	559	struct iwl_rx_packet *pkt = rxb_addr(rxb);
	560	struct iwl_card_state_notif card_state_notif = (void )pkt->data;
	561	u32 flags = le32_to_cpu(card_state_notif->flags);
	562
	563	IWL_DEBUG_RF_KILL(mvm, "Card state received: HW:%s SW:%s CT:%s\n",
	564	(flags & HW_CARD_DISABLED) ? "Kill" : "On",
	565	(flags & SW_CARD_DISABLED) ? "Kill" : "On",
	566	(flags & CT_KILL_CARD_DISABLED) ?
	567	"Reached" : "Not reached");
	568
8ca151b5 JB	569	return 0;
	570	}
	571
	572	int iwl_mvm_rx_radio_ver(struct iwl_mvm mvm, struct iwl_rx_cmd_buffer rxb,
	573	struct iwl_device_cmd *cmd)
	574	{
	575	struct iwl_rx_packet *pkt = rxb_addr(rxb);
	576	struct iwl_radio_version_notif radio_version = (void )pkt->data;
	577
	578	/* TODO: what to do with that? */
	579	IWL_DEBUG_INFO(mvm,
	580	"Radio version: flavor: 0x%08x, step 0x%08x, dash 0x%08x\n",
	581	le32_to_cpu(radio_version->radio_flavor),
	582	le32_to_cpu(radio_version->radio_step),
	583	le32_to_cpu(radio_version->radio_dash));
	584	return 0;
	585	}