/******************************************************************************
 *
 * Copyright(c) 2005 - 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 "third_party/iwlwifi/iwl-drv.h"

#include <lib/sync/completion.h>
#include <stdio.h>
#include <threads.h>
#include <zircon/listnode.h>
#include <zircon/status.h>

#include "third_party/iwlwifi/fw/img.h"
#include "third_party/iwlwifi/iwl-agn-hw.h"
#include "third_party/iwlwifi/iwl-config.h"
#include "third_party/iwlwifi/iwl-csr.h"
#include "third_party/iwlwifi/iwl-dbg-tlv.h"
#include "third_party/iwlwifi/iwl-debug.h"
#include "third_party/iwlwifi/iwl-modparams.h"
#include "third_party/iwlwifi/iwl-op-mode.h"
#include "third_party/iwlwifi/iwl-trans.h"
#include "third_party/iwlwifi/platform/align.h"
#include "third_party/iwlwifi/platform/module.h"
#include "third_party/iwlwifi/platform/stats.h"
#ifdef CPTCFG_IWLWIFI_SUPPORT_DEBUG_OVERRIDES
#include "third_party/iwlwifi/iwl-dbg-cfg.h"
#endif
#ifdef CPTCFG_IWLWIFI_DEVICE_TESTMODE
#include "third_party/iwlwifi/iwl-tm-gnl.h"
#endif

#define FIRMWARE_DIR "iwlwifi"
#define DRV_DESCRIPTION "Intel(R) Wireless WiFi driver for Fuchsia"

#ifdef CPTCFG_IWLWIFI_DEBUGFS
static struct dentry *iwl_dbgfs_root;
#endif

/**
 * struct iwl_drv - drv common data
 * @list: list of drv structures using this opmode
 * @fw: the iwl_fw structure
 * @op_mode: the running op_mode
 * @trans: transport layer
 * @dev: for debug prints only
 * @fw_index: firmware revision to try loading
 * @firmware_name: composite filename of ucode file to load
 * @request_firmware_complete: the firmware has been obtained from user space
 */
struct iwl_drv {
	list_node_t list;
	struct iwl_fw fw;

	struct iwl_op_mode *op_mode;
	struct iwl_trans *trans;
	struct device *dev;
#if IS_ENABLED(CPTCFG_IWLXVT)
	bool xvt_mode_on;
#endif

	int fw_index; /* firmware we're trying to load */
	char firmware_name[64]; /* name of firmware file to load */

	sync_completion_t request_firmware_complete;

#ifdef CPTCFG_IWLWIFI_DEBUGFS
	struct dentry *dbgfs_drv;
	struct dentry *dbgfs_trans;
	struct dentry *dbgfs_op_mode;
#endif
};

enum {
	DVM_OP_MODE,
	MVM_OP_MODE,
#if IS_ENABLED(CPTCFG_IWLXVT)
	XVT_OP_MODE,
#endif
#if IS_ENABLED(CPTCFG_IWLTEST)
	TRANS_TEST_OP_MODE,
#endif
#if IS_ENABLED(CPTCFG_IWLFMAC)
	FMAC_OP_MODE,
#endif
};

/* Protects the table contents, i.e. the ops pointer & drv list */
static mtx_t iwlwifi_opmode_table_mtx;
static struct iwlwifi_opmode_table {
	const char *name; /* name: iwldvm, iwlmvm, etc */
	const struct iwl_op_mode_ops *ops; /* pointer to op_mode ops */
	list_node_t drv; /* list of devices using this op_mode */
} iwlwifi_opmode_table[] = {
	/* ops set when driver is initialized */
	[DVM_OP_MODE] = { .name = "iwldvm", .ops = NULL },
	[MVM_OP_MODE] = { .name = "iwlmvm", .ops = NULL },
#if IS_ENABLED(CPTCFG_IWLFMAC)
	[FMAC_OP_MODE] = { .name = "iwlfmac", .ops = NULL },
#endif
#if IS_ENABLED(CPTCFG_IWLXVT)
	[XVT_OP_MODE] = { .name = "iwlxvt", .ops = NULL },
#endif
#if IS_ENABLED(CPTCFG_IWLTEST)
	[TRANS_TEST_OP_MODE] = { .name = "iwltest", .ops = NULL },
#endif
};

#if IS_ENABLED(CPTCFG_IWLXVT)
/* kernel object for a device dedicated
 * folder in the sysfs */
static struct kobject *iwl_kobj;

static struct iwl_op_mode *_iwl_op_mode_start(struct iwl_drv *drv,
					      struct iwlwifi_opmode_table *op);
static void _iwl_op_mode_stop(struct iwl_drv *drv);

/*
 * iwl_drv_get_dev_container - Given a device, returns the pointer
 * to it's corresponding driver's struct
 */
struct iwl_drv *iwl_drv_get_dev_container(struct device *dev)
{
	struct iwl_drv *drv_itr;
	int i;

	/* Going over all drivers, looking for the one that holds dev */
	for (i = 0; (i < ARRAY_SIZE(iwlwifi_opmode_table)); i++) {
		list_for_each_entry(drv_itr, &iwlwifi_opmode_table[i].drv, list)
			if (drv_itr->dev == dev) {
				return drv_itr;
			}
	}

	return NULL;
}
IWL_EXPORT_SYMBOL(iwl_drv_get_dev_container);

/*
 * iwl_drv_get_op_mode - Returns the index of the device's
 * active operation mode
 */
static zx_status_t iwl_drv_get_op_mode_idx(struct iwl_drv *drv)
{
	struct iwl_drv *drv_itr;
	int i;

	if (!drv || !drv->dev) {
		return -ENODEV;
	}

	/* Going over all drivers, looking for the list that holds it */
	for (i = 0; (i < ARRAY_SIZE(iwlwifi_opmode_table)); i++) {
		list_for_each_entry(drv_itr, &iwlwifi_opmode_table[i].drv,
				    list) {
			if (drv_itr->dev == drv->dev) {
				return i;
			}
		}
	}

	return ZX_ERR_INVALID_ARGS;
}

static bool iwl_drv_xvt_mode_supported(enum iwl_fw_type fw_type, int mode_idx)
{
	/* xVT mode is available only with 16 FW */
	switch (fw_type) {
	case IWL_FW_MVM:
#if IS_ENABLED(CPTCFG_IWLFMAC)
	case IWL_FW_FMAC:
#endif
		break;
	default:
		return false;
	}

	/* check whether the requested operation mode is supported */
	switch (mode_idx) {
	case XVT_OP_MODE:
	case MVM_OP_MODE:
#if IS_ENABLED(CPTCFG_IWLFMAC)
	case FMAC_OP_MODE:
#endif
		return true;
	default:
		return false;
	}
}

/*
 * iwl_drv_switch_op_mode - Switch between operation modes
 * Checks if the desired operation mode is valid, if it
 * is supported by the device. Stops the current op mode
 * and starts the desired mode.
 */
zx_status_t iwl_drv_switch_op_mode(struct iwl_drv *drv, const char *new_op_name)
{
	struct iwlwifi_opmode_table *new_op = NULL;
	int idx;

	/* Searching for wanted op_mode*/
	for (idx = 0; idx < ARRAY_SIZE(iwlwifi_opmode_table); idx++) {
		if (!strcmp(iwlwifi_opmode_table[idx].name, new_op_name)) {
			new_op = &iwlwifi_opmode_table[idx];
			break;
		}
	}

	/* Checking if the desired op mode is valid */
	if (!new_op) {
		IWL_ERR(drv, "No such op mode \"%s\"\n", new_op_name);
		return ZX_ERR_INVALID_ARGS;
	}

	/*
   * If the desired op mode is already the
   * device's current op mode, do nothing
   */
	if (idx == iwl_drv_get_op_mode_idx(drv)) {
		return 0;
	}

	/* Check if the desired operation mode is supported by the device/fw */
	if (!iwl_drv_xvt_mode_supported(drv->fw.type, idx)) {
		IWL_ERR(drv, "Op mode %s is not supported by the loaded fw\n",
			new_op_name);
		return -ENOTSUPP;
	}

	/* Recording new op mode state */
	drv->xvt_mode_on = (idx == XVT_OP_MODE);

	/* Stopping the current op mode */
	_iwl_op_mode_stop(drv);

	/* Changing operation mode */
	mtx_lock(&iwlwifi_opmode_table_mtx);
	list_move_tail(&drv->list, &new_op->drv);
	mtx_unlock(&iwlwifi_opmode_table_mtx);

	/* Starting the new op mode */
	if (new_op->ops) {
		drv->op_mode = _iwl_op_mode_start(drv, new_op);
		if (!drv->op_mode) {
			IWL_ERR(drv, "Error switching op modes\n");
			return ZX_ERR_INVALID_ARGS;
		}
	} else {
		return iwl_module_request("%s", new_op->name);
	}

	return 0;
}
IWL_EXPORT_SYMBOL(iwl_drv_switch_op_mode);

/*
 * iwl_drv_sysfs_show - Returns device information to user
 */
static ssize_t iwl_drv_sysfs_show(struct device *dev,
				  struct device_attribute *attr, char *buf)
{
	struct iwl_drv *drv;
	int op_mode_idx = 0, itr;
	int ret = 0;

	/* Retrieving containing driver */
	drv = iwl_drv_get_dev_container(dev);
	op_mode_idx = iwl_drv_get_op_mode_idx(drv);

	/* Checking if driver and driver information are valid */
	if (op_mode_idx < 0) {
		return op_mode_idx;
	}

	/* Constructing output */
	for (itr = 0; itr < ARRAY_SIZE(iwlwifi_opmode_table); itr++) {
		ret += scnprintf(buf + ret, PAGE_SIZE - ret, "%s%-s\n",
				 (itr == op_mode_idx) ? "* " : "  ",
				 iwlwifi_opmode_table[itr].name);
	}

	return ret;
}

/* Attribute for device */
static const DEVICE_ATTR(op_mode, S_IRUGO, iwl_drv_sysfs_show, NULL);

/*
 * iwl_create_sysfs_file - Creates a sysfs entry (under PCI devices),
 * and a symlink under modules/iwlwifi
 */
static int iwl_create_sysfs_file(struct iwl_drv *drv)
{
	int ret;

	ret = device_create_file(drv->dev, &dev_attr_op_mode);
	if (!ret) {
		ret = sysfs_create_link(iwl_kobj, &drv->dev->kobj,
					dev_name(drv->dev));
	}

	return ret;
}

/*
 * iwl_remove_sysfs_file - Removes sysfs entries
 */
static void iwl_remove_sysfs_file(struct iwl_drv *drv)
{
	sysfs_remove_link(iwl_kobj, dev_name(drv->dev));
	device_remove_file(drv->dev, &dev_attr_op_mode);
}
#endif /* CPTCFG_IWLXVT */

#define IWL_DEFAULT_SCAN_CHANNELS 40

/*
 * struct fw_sec: Just for the image parsing process.
 * For the fw storage we are using struct fw_desc.
 */
struct fw_sec {
	const void *data; /* the sec data */
	size_t size; /* section size */
	uint32_t offset; /* offset of writing in the device */
};

static void iwl_free_fw_desc(struct iwl_drv *drv, struct fw_desc *desc)
{
	vfree(desc->data);
	desc->data = NULL;
	desc->len = 0;
}

static void iwl_free_fw_img(struct iwl_drv *drv, struct fw_img *img)
{
	int i;
	for (i = 0; i < img->num_sec; i++) {
		iwl_free_fw_desc(drv, &img->sec[i]);
	}
	kfree(img->sec);
}

static void iwl_dealloc_ucode(struct iwl_drv *drv)
{
	size_t i;

	kfree(drv->fw.dbg.dest_tlv);
	for (i = 0; i < ARRAY_SIZE(drv->fw.dbg.conf_tlv); i++) {
		kfree(drv->fw.dbg.conf_tlv[i]);
	}
	for (i = 0; i < ARRAY_SIZE(drv->fw.dbg.trigger_tlv); i++) {
		kfree(drv->fw.dbg.trigger_tlv[i]);
	}
	kfree(drv->fw.dbg.mem_tlv);
	kfree(drv->fw.iml);

	for (i = 0; i < IWL_UCODE_TYPE_MAX; i++) {
		iwl_free_fw_img(drv, drv->fw.img + i);
	}
}

static zx_status_t iwl_alloc_fw_desc(struct iwl_drv *drv, struct fw_desc *desc,
				     struct fw_sec *sec)
{
	void *data;

	desc->data = NULL;

	if (!sec || !sec->size) {
		return ZX_ERR_INVALID_ARGS;
	}

	data = vmalloc(sec->size);
	if (!data) {
		return ZX_ERR_NO_MEMORY;
	}

	desc->len = (uint32_t)sec->size;
	desc->offset = sec->offset;
	memcpy(data, sec->data, desc->len);
	desc->data = data;

	return 0;
}

static zx_status_t iwl_req_fw_callback(struct firmware *ucode_raw,
				       void *context);

static zx_status_t iwl_load_firmware(struct iwl_drv *drv, bool first)
{
	const struct iwl_cfg *cfg = drv->trans->cfg;
	char tag[8];
#if defined(CPTCFG_IWLWIFI_SUPPORT_DEBUG_OVERRIDES)
	char fw_name_temp[64];
#endif

	if (drv->trans->trans_cfg->device_family == IWL_DEVICE_FAMILY_9000 &&
	    (drv->trans->hw_rev_step != SILICON_B_STEP &&
	     drv->trans->hw_rev_step != SILICON_C_STEP)) {
		IWL_ERR(drv,
			"Only HW steps B and C are currently supported (0x%0x)\n",
			drv->trans->hw_rev);
		return ZX_ERR_INVALID_ARGS;
	}

	if (first) {
		drv->fw_index = cfg->ucode_api_max;
		sprintf(tag, "%d", drv->fw_index);
	} else {
		drv->fw_index--;
		sprintf(tag, "%d", drv->fw_index);
	}

#ifdef CPTCFG_IWLWIFI_DISALLOW_OLDER_FW
	/* The dbg-cfg check here works because the first time we get
   * here we always load the 'api_max' version, and once that
   * has returned we load the dbg-cfg file.
   */
	if ((drv->fw_index != cfg->ucode_api_max
#ifdef CPTCFG_IWLWIFI_SUPPORT_DEBUG_OVERRIDES
	     && !drv->trans->dbg_cfg.load_old_fw
#endif
	     ) ||
	    drv->fw_index < cfg->ucode_api_min) {
#else
	if (drv->fw_index < cfg->ucode_api_min) {
#endif
		IWL_ERR(drv, "no suitable firmware found!\n");

		if (cfg->ucode_api_min == cfg->ucode_api_max) {
			IWL_ERR(drv, "%s%d is required\n", cfg->fw_name_pre,
				cfg->ucode_api_max);
		} else {
			IWL_ERR(drv, "minimum version required: %s%d\n",
				cfg->fw_name_pre, cfg->ucode_api_min);
			IWL_ERR(drv, "maximum version supported: %s%d\n",
				cfg->fw_name_pre, cfg->ucode_api_max);
		}

		IWL_ERR(drv,
			"check git://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git\n");
		return ZX_ERR_NOT_FOUND;
	}

	snprintf(drv->firmware_name, sizeof(drv->firmware_name),
		 "%s/%s%s.ucode", FIRMWARE_DIR, cfg->fw_name_pre, tag);

#ifdef CPTCFG_IWLWIFI_SUPPORT_DEBUG_OVERRIDES
	if (drv->trans->dbg_cfg.fw_file_pre) {
		snprintf(fw_name_temp, sizeof(fw_name_temp), "%s%s",
			 drv->trans->dbg_cfg.fw_file_pre, drv->firmware_name);
		strncpy(drv->firmware_name, fw_name_temp,
			sizeof(drv->firmware_name));
	}
#endif /* CPTCFG_IWLWIFI_SUPPORT_DEBUG_OVERRIDES */

	IWL_INFO(drv, "attempting to load firmware '%s'\n", drv->firmware_name);

	// If we cannot load the firmware file (e.g. the specified version is not included on the system),
	// try the next (lower version) firmware file.
	zx_status_t ret = iwl_firmware_request_nowait(
		drv->trans->dev, drv->firmware_name, iwl_req_fw_callback, drv);
	if (ret == ZX_ERR_NOT_FOUND) {
		IWL_DEBUG_FW(
			drv,
			"cannot load the firmware file '%s'. Try next firmware version.\n",
			drv->firmware_name);
		return iwl_load_firmware(drv, false);
	} else {
		return ret;
	}
}

struct fw_img_parsing {
	struct fw_sec *sec;
	int sec_counter;
};

/*
 * struct fw_sec_parsing: to extract fw section and it's offset from tlv
 */
struct fw_sec_parsing {
	__le32 offset;
	const uint8_t data[];
} __packed;

/**
 * struct iwl_tlv_calib_data - parse the default calib data from TLV
 *
 * @ucode_type: the uCode to which the following default calib relates.
 * @calib: default calibrations.
 */
struct iwl_tlv_calib_data {
	__le32 ucode_type;
	struct iwl_tlv_calib_ctrl calib;
} __packed;

struct iwl_firmware_pieces {
	struct fw_img_parsing img[IWL_UCODE_TYPE_MAX];

	uint32_t init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
	uint32_t inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;

	/* FW debug data parsed for driver usage */
	bool dbg_dest_tlv_init;
	uint8_t *dbg_dest_ver;
	union {
		struct iwl_fw_dbg_dest_tlv *dbg_dest_tlv;
		struct iwl_fw_dbg_dest_tlv_v1 *dbg_dest_tlv_v1;
	};
	struct iwl_fw_dbg_conf_tlv *dbg_conf_tlv[FW_DBG_CONF_MAX];
	size_t dbg_conf_tlv_len[FW_DBG_CONF_MAX];
	struct iwl_fw_dbg_trigger_tlv *dbg_trigger_tlv[FW_DBG_TRIGGER_MAX];
	size_t dbg_trigger_tlv_len[FW_DBG_TRIGGER_MAX];
	struct iwl_fw_dbg_mem_seg_tlv *dbg_mem_tlv;
	size_t n_mem_tlv;
};

/*
 * These functions are just to extract uCode section data from the pieces
 * structure.
 */
static struct fw_sec *get_sec(struct iwl_firmware_pieces *pieces,
			      enum iwl_ucode_type type, int sec)
{
	return &pieces->img[type].sec[sec];
}

static void alloc_sec_data(struct iwl_firmware_pieces *pieces,
			   enum iwl_ucode_type type, int sec)
{
	struct fw_img_parsing *img = &pieces->img[type];
	struct fw_sec *sec_memory;
	int size = sec + 1;
	size_t alloc_size = sizeof(*img->sec) * size;

	if (img->sec && img->sec_counter >= size) {
		return;
	}

	sec_memory = realloc(img->sec, alloc_size);
	if (!sec_memory) {
		return;
	}

	img->sec = sec_memory;
	img->sec_counter = size;
}

static void set_sec_data(struct iwl_firmware_pieces *pieces,
			 enum iwl_ucode_type type, int sec, const void *data)
{
	alloc_sec_data(pieces, type, sec);

	pieces->img[type].sec[sec].data = data;
}

static void set_sec_size(struct iwl_firmware_pieces *pieces,
			 enum iwl_ucode_type type, int sec, size_t size)
{
	alloc_sec_data(pieces, type, sec);

	pieces->img[type].sec[sec].size = size;
}

static size_t get_sec_size(struct iwl_firmware_pieces *pieces,
			   enum iwl_ucode_type type, int sec)
{
	return pieces->img[type].sec[sec].size;
}

static void set_sec_offset(struct iwl_firmware_pieces *pieces,
			   enum iwl_ucode_type type, int sec, uint32_t offset)
{
	alloc_sec_data(pieces, type, sec);

	pieces->img[type].sec[sec].offset = offset;
}

static zx_status_t iwl_store_cscheme(struct iwl_fw *fw, const uint8_t *data,
				     const uint32_t len)
{
	int i, j;
	struct iwl_fw_cscheme_list *l = (struct iwl_fw_cscheme_list *)data;
	struct iwl_fw_cipher_scheme *fwcs;

	if (len < sizeof(*l) ||
	    len < sizeof(l->size) + l->size * sizeof(l->cs[0])) {
		return ZX_ERR_INVALID_ARGS;
	}

	for (i = 0, j = 0; i < IWL_UCODE_MAX_CS && i < l->size; i++) {
		fwcs = &l->cs[j];

		/* we skip schemes with zero cipher suite selector */
		if (!fwcs->cipher) {
			continue;
		}

		fw->cs[j++] = *fwcs;
	}

	return 0;
}

/*
 * Gets uCode section from tlv.
 */
static int iwl_store_ucode_sec(struct iwl_firmware_pieces *pieces,
			       const void *data, enum iwl_ucode_type type,
			       int size)
{
	struct fw_img_parsing *img;
	struct fw_sec *sec;
	struct fw_sec_parsing *sec_parse;
	size_t alloc_size;

	if (WARN_ON(!pieces || !data || type >= IWL_UCODE_TYPE_MAX)) {
		return -1;
	}

	sec_parse = (struct fw_sec_parsing *)data;

	img = &pieces->img[type];

	alloc_size = sizeof(*img->sec) * (img->sec_counter + 1);
	sec = realloc(img->sec, alloc_size);
	if (!sec) {
		return ZX_ERR_NO_MEMORY;
	}
	img->sec = sec;

	sec = &img->sec[img->sec_counter];

	sec->offset = le32_to_cpu(sec_parse->offset);
	sec->data = sec_parse->data;
	sec->size = size - sizeof(sec_parse->offset);

	++img->sec_counter;

	return 0;
}

static zx_status_t iwl_set_default_calib(struct iwl_drv *drv,
					 const uint8_t *data)
{
	struct iwl_tlv_calib_data *def_calib =
		(struct iwl_tlv_calib_data *)data;
	uint32_t ucode_type = le32_to_cpu(def_calib->ucode_type);
	if (ucode_type >= IWL_UCODE_TYPE_MAX) {
		IWL_ERR(drv, "Wrong ucode_type %u for default calibration.\n",
			ucode_type);
		return ZX_ERR_INVALID_ARGS;
	}
	drv->fw.default_calib[ucode_type].flow_trigger =
		def_calib->calib.flow_trigger;
	drv->fw.default_calib[ucode_type].event_trigger =
		def_calib->calib.event_trigger;

	return 0;
}

static void iwl_set_ucode_api_flags(struct iwl_drv *drv, const uint8_t *data,
				    struct iwl_ucode_capabilities *capa)
{
	const struct iwl_ucode_api *ucode_api = (void *)data;
	uint32_t api_index = le32_to_cpu(ucode_api->api_index);
	uint32_t api_flags = le32_to_cpu(ucode_api->api_flags);
	int i;

	if (api_index >= DIV_ROUND_UP(NUM_IWL_UCODE_TLV_API, 32)) {
		IWL_WARN(drv,
			 "api flags index %d larger than supported by driver\n",
			 api_index);
		return;
	}

	for (i = 0; i < 32; i++) {
		if (api_flags & BIT(i)) {
			__set_bit(i + 32 * api_index, capa->_api);
		}
	}
}

static void iwl_set_ucode_capabilities(struct iwl_drv *drv, const uint8_t *data,
				       struct iwl_ucode_capabilities *capa)
{
	const struct iwl_ucode_capa *ucode_capa = (void *)data;
	uint32_t api_index = le32_to_cpu(ucode_capa->api_index);
	uint32_t api_flags = le32_to_cpu(ucode_capa->api_capa);
	int i;

	if (api_index >= DIV_ROUND_UP(NUM_IWL_UCODE_TLV_CAPA, 32)) {
		IWL_WARN(
			drv,
			"capa flags index %d larger than supported by driver\n",
			api_index);
		return;
	}

	for (i = 0; i < 32; i++) {
		if (api_flags & BIT(i)) {
			__set_bit(i + 32 * api_index, capa->_capa);
		}
	}
}

static zx_status_t iwl_parse_v1_v2_firmware(struct iwl_drv *drv,
					    const struct firmware *ucode_raw,
					    struct iwl_firmware_pieces *pieces)
{
	struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
	uint32_t api_ver, hdr_size, build;
	char buildstr[25];
	const uint8_t *src;

	drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
	api_ver = IWL_UCODE_API(drv->fw.ucode_ver);

	switch (api_ver) {
	default:
		hdr_size = 28;
		if (ucode_raw->size < hdr_size) {
			IWL_ERR(drv, "File size too small!\n");
			return ZX_ERR_INVALID_ARGS;
		}
		build = le32_to_cpu(ucode->u.v2.build);
		set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
			     le32_to_cpu(ucode->u.v2.inst_size));
		set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
			     le32_to_cpu(ucode->u.v2.data_size));
		set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
			     le32_to_cpu(ucode->u.v2.init_size));
		set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
			     le32_to_cpu(ucode->u.v2.init_data_size));
		src = ucode->u.v2.data;
		break;
	case 0:
	case 1:
	case 2:
		hdr_size = 24;
		if (ucode_raw->size < hdr_size) {
			IWL_ERR(drv, "File size too small!\n");
			return ZX_ERR_INVALID_ARGS;
		}
		build = 0;
		set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
			     le32_to_cpu(ucode->u.v1.inst_size));
		set_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
			     le32_to_cpu(ucode->u.v1.data_size));
		set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
			     le32_to_cpu(ucode->u.v1.init_size));
		set_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
			     le32_to_cpu(ucode->u.v1.init_data_size));
		src = ucode->u.v1.data;
		break;
	}

	if (build) {
		sprintf(buildstr, " build %u", build);
	} else {
		buildstr[0] = '\0';
	}

	snprintf(drv->fw.fw_version, sizeof(drv->fw.fw_version),
		 "%u.%u.%u.%u%s", IWL_UCODE_MAJOR(drv->fw.ucode_ver),
		 IWL_UCODE_MINOR(drv->fw.ucode_ver),
		 IWL_UCODE_API(drv->fw.ucode_ver),
		 IWL_UCODE_SERIAL(drv->fw.ucode_ver), buildstr);

	/* Verify size of file vs. image size info in file's header */

	if (ucode_raw->size != hdr_size +
				       get_sec_size(pieces, IWL_UCODE_REGULAR,
						    IWL_UCODE_SECTION_INST) +
				       get_sec_size(pieces, IWL_UCODE_REGULAR,
						    IWL_UCODE_SECTION_DATA) +
				       get_sec_size(pieces, IWL_UCODE_INIT,
						    IWL_UCODE_SECTION_INST) +
				       get_sec_size(pieces, IWL_UCODE_INIT,
						    IWL_UCODE_SECTION_DATA)) {
		IWL_ERR(drv,
			"uCode file size %d does not match expected size\n",
			(int)ucode_raw->size);
		return ZX_ERR_INVALID_ARGS;
	}

	set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST, src);
	src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST);
	set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST,
		       IWLAGN_RTC_INST_LOWER_BOUND);
	set_sec_data(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA, src);
	src += get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA);
	set_sec_offset(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA,
		       IWLAGN_RTC_DATA_LOWER_BOUND);
	set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST, src);
	src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST);
	set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST,
		       IWLAGN_RTC_INST_LOWER_BOUND);
	set_sec_data(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA, src);
	src += get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA);
	set_sec_offset(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA,
		       IWLAGN_RTC_DATA_LOWER_BOUND);
	return 0;
}

static zx_status_t iwl_parse_tlv_firmware(struct iwl_drv *drv,
					  const struct firmware *ucode_raw,
					  struct iwl_firmware_pieces *pieces,
					  struct iwl_ucode_capabilities *capa,
					  bool *usniffer_images)
{
	struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
	struct iwl_ucode_tlv *tlv;
	size_t len = ucode_raw->size;
	const uint8_t *data;
	uint32_t tlv_len;
	uint32_t usniffer_img;
	enum iwl_ucode_tlv_type tlv_type;
	const uint8_t *tlv_data;
	char buildstr[25];
	uint32_t build, paging_mem_size;
	int num_of_cpus;
	bool usniffer_req = false;

#ifdef CPTCFG_IWLWIFI_SUPPORT_DEBUG_OVERRIDES
	if (ucode->magic == cpu_to_le32(IWL_TLV_FW_DBG_MAGIC)) {
		size_t dbg_data_ofs =
			offsetof(struct iwl_tlv_ucode_header, human_readable);
		data = (void *)ucode_raw->data + dbg_data_ofs;
		len -= dbg_data_ofs;

		goto fw_dbg_conf;
	}
#endif

	if (len < sizeof(*ucode)) {
		IWL_ERR(drv, "uCode has invalid length: %zd\n", len);
		return ZX_ERR_INVALID_ARGS;
	}

	if (ucode->magic != (__le32)cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
		IWL_ERR(drv, "invalid uCode magic: 0X%x\n",
			le32_to_cpu(ucode->magic));
		return ZX_ERR_INVALID_ARGS;
	}

	drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
	memcpy(drv->fw.human_readable, ucode->human_readable,
	       sizeof(drv->fw.human_readable));
	build = le32_to_cpu(ucode->build);

	if (build) {
		sprintf(buildstr, " build %u", build);
	} else {
		buildstr[0] = '\0';
	}

	snprintf(drv->fw.fw_version, sizeof(drv->fw.fw_version),
		 "%u.%u.%u.%u%s", IWL_UCODE_MAJOR(drv->fw.ucode_ver),
		 IWL_UCODE_MINOR(drv->fw.ucode_ver),
		 IWL_UCODE_API(drv->fw.ucode_ver),
		 IWL_UCODE_SERIAL(drv->fw.ucode_ver), buildstr);

	data = ucode->data;

	len -= sizeof(*ucode);

	while (len >= sizeof(*tlv)) {
		len -= sizeof(*tlv);
		tlv = (void *)data;

		tlv_len = le32_to_cpu(tlv->length);
		tlv_type = le32_to_cpu(tlv->type);
		tlv_data = tlv->data;

		if (len < tlv_len) {
			IWL_ERR(drv, "invalid TLV len: %zd/%u\n", len, tlv_len);
			return ZX_ERR_INVALID_ARGS;
		}
		len -= IWL_ALIGN(tlv_len, 4);
		data += sizeof(*tlv) + IWL_ALIGN(tlv_len, 4);

		switch (tlv_type) {
		case IWL_UCODE_TLV_INST:
			set_sec_data(pieces, IWL_UCODE_REGULAR,
				     IWL_UCODE_SECTION_INST, tlv_data);
			set_sec_size(pieces, IWL_UCODE_REGULAR,
				     IWL_UCODE_SECTION_INST, tlv_len);
			set_sec_offset(pieces, IWL_UCODE_REGULAR,
				       IWL_UCODE_SECTION_INST,
				       IWLAGN_RTC_INST_LOWER_BOUND);
			break;
		case IWL_UCODE_TLV_DATA:
			set_sec_data(pieces, IWL_UCODE_REGULAR,
				     IWL_UCODE_SECTION_DATA, tlv_data);
			set_sec_size(pieces, IWL_UCODE_REGULAR,
				     IWL_UCODE_SECTION_DATA, tlv_len);
			set_sec_offset(pieces, IWL_UCODE_REGULAR,
				       IWL_UCODE_SECTION_DATA,
				       IWLAGN_RTC_DATA_LOWER_BOUND);
			break;
		case IWL_UCODE_TLV_INIT:
			set_sec_data(pieces, IWL_UCODE_INIT,
				     IWL_UCODE_SECTION_INST, tlv_data);
			set_sec_size(pieces, IWL_UCODE_INIT,
				     IWL_UCODE_SECTION_INST, tlv_len);
			set_sec_offset(pieces, IWL_UCODE_INIT,
				       IWL_UCODE_SECTION_INST,
				       IWLAGN_RTC_INST_LOWER_BOUND);
			break;
		case IWL_UCODE_TLV_INIT_DATA:
			set_sec_data(pieces, IWL_UCODE_INIT,
				     IWL_UCODE_SECTION_DATA, tlv_data);
			set_sec_size(pieces, IWL_UCODE_INIT,
				     IWL_UCODE_SECTION_DATA, tlv_len);
			set_sec_offset(pieces, IWL_UCODE_INIT,
				       IWL_UCODE_SECTION_DATA,
				       IWLAGN_RTC_DATA_LOWER_BOUND);
			break;
		case IWL_UCODE_TLV_BOOT:
			IWL_ERR(drv, "Found unexpected BOOT ucode\n");
			break;
		case IWL_UCODE_TLV_PROBE_MAX_LEN:
			if (tlv_len != sizeof(uint32_t)) {
				goto invalid_tlv_len;
			}
			capa->max_probe_length =
				le32_to_cpup((__le32 *)tlv_data);
			break;
		case IWL_UCODE_TLV_PAN:
			if (tlv_len) {
				goto invalid_tlv_len;
			}
			capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
			break;
		case IWL_UCODE_TLV_FLAGS:
			/* must be at least one uint32_t */
			if (tlv_len < sizeof(uint32_t)) {
				goto invalid_tlv_len;
			}
			/* and a proper number of u32s */
			if (tlv_len % sizeof(uint32_t)) {
				goto invalid_tlv_len;
			}
			/*
         * This driver only reads the first uint32_t as
         * right now no more features are defined,
         * if that changes then either the driver
         * will not work with the new firmware, or
         * it'll not take advantage of new features.
         */
			capa->flags = le32_to_cpup((__le32 *)tlv_data);
			break;
		case IWL_UCODE_TLV_API_CHANGES_SET:
			if (tlv_len != sizeof(struct iwl_ucode_api)) {
				goto invalid_tlv_len;
			}
			iwl_set_ucode_api_flags(drv, tlv_data, capa);
			break;
		case IWL_UCODE_TLV_ENABLED_CAPABILITIES:
			if (tlv_len != sizeof(struct iwl_ucode_capa)) {
				goto invalid_tlv_len;
			}
			iwl_set_ucode_capabilities(drv, tlv_data, capa);
			break;
		case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
			if (tlv_len != sizeof(uint32_t)) {
				goto invalid_tlv_len;
			}
			pieces->init_evtlog_ptr =
				le32_to_cpup((__le32 *)tlv_data);
			break;
		case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
			if (tlv_len != sizeof(uint32_t)) {
				goto invalid_tlv_len;
			}
			pieces->init_evtlog_size =
				le32_to_cpup((__le32 *)tlv_data);
			break;
		case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
			if (tlv_len != sizeof(uint32_t)) {
				goto invalid_tlv_len;
			}
			pieces->init_errlog_ptr =
				le32_to_cpup((__le32 *)tlv_data);
			break;
		case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
			if (tlv_len != sizeof(uint32_t)) {
				goto invalid_tlv_len;
			}
			pieces->inst_evtlog_ptr =
				le32_to_cpup((__le32 *)tlv_data);
			break;
		case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
			if (tlv_len != sizeof(uint32_t)) {
				goto invalid_tlv_len;
			}
			pieces->inst_evtlog_size =
				le32_to_cpup((__le32 *)tlv_data);
			break;
		case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
			if (tlv_len != sizeof(uint32_t)) {
				goto invalid_tlv_len;
			}
			pieces->inst_errlog_ptr =
				le32_to_cpup((__le32 *)tlv_data);
			break;
		case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
			if (tlv_len) {
				goto invalid_tlv_len;
			}
			drv->fw.enhance_sensitivity_table = true;
			break;
		case IWL_UCODE_TLV_WOWLAN_INST:
			set_sec_data(pieces, IWL_UCODE_WOWLAN,
				     IWL_UCODE_SECTION_INST, tlv_data);
			set_sec_size(pieces, IWL_UCODE_WOWLAN,
				     IWL_UCODE_SECTION_INST, tlv_len);
			set_sec_offset(pieces, IWL_UCODE_WOWLAN,
				       IWL_UCODE_SECTION_INST,
				       IWLAGN_RTC_INST_LOWER_BOUND);
			break;
		case IWL_UCODE_TLV_WOWLAN_DATA:
			set_sec_data(pieces, IWL_UCODE_WOWLAN,
				     IWL_UCODE_SECTION_DATA, tlv_data);
			set_sec_size(pieces, IWL_UCODE_WOWLAN,
				     IWL_UCODE_SECTION_DATA, tlv_len);
			set_sec_offset(pieces, IWL_UCODE_WOWLAN,
				       IWL_UCODE_SECTION_DATA,
				       IWLAGN_RTC_DATA_LOWER_BOUND);
			break;
		case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
			if (tlv_len != sizeof(uint32_t)) {
				goto invalid_tlv_len;
			}
			capa->standard_phy_calibration_size =
				le32_to_cpup((__le32 *)tlv_data);
			break;
		case IWL_UCODE_TLV_SEC_RT:
			iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_REGULAR,
					    tlv_len);
			drv->fw.type = IWL_FW_MVM;
			break;
		case IWL_UCODE_TLV_SEC_INIT:
			iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_INIT,
					    tlv_len);
			drv->fw.type = IWL_FW_MVM;
			break;
		case IWL_UCODE_TLV_SEC_WOWLAN:
			iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_WOWLAN,
					    tlv_len);
			drv->fw.type = IWL_FW_MVM;
			break;
		case IWL_UCODE_TLV_DEF_CALIB:
			if (tlv_len != sizeof(struct iwl_tlv_calib_data)) {
				goto invalid_tlv_len;
			}
			if (iwl_set_default_calib(drv, tlv_data)) {
				goto tlv_error;
			}
			break;
		case IWL_UCODE_TLV_PHY_SKU:
			if (tlv_len != sizeof(uint32_t)) {
				goto invalid_tlv_len;
			}
			drv->fw.phy_config = le32_to_cpup((__le32 *)tlv_data);
#ifdef CPTCFG_IWLWIFI_SUPPORT_DEBUG_OVERRIDES
			if (drv->trans->dbg_cfg.valid_ants & ~ANT_ABC) {
				IWL_ERR(drv,
					"Invalid value for antennas: 0x%x\n",
					drv->trans->dbg_cfg.valid_ants);
			}
			/* Make sure value stays in range */
			drv->trans->dbg_cfg.valid_ants &= ANT_ABC;
			if (drv->trans->dbg_cfg.valid_ants) {
				uint32_t phy_config = ~(FW_PHY_CFG_TX_CHAIN |
							FW_PHY_CFG_RX_CHAIN);

				phy_config |= (drv->trans->dbg_cfg.valid_ants
					       << FW_PHY_CFG_TX_CHAIN_POS);
				phy_config |= (drv->trans->dbg_cfg.valid_ants
					       << FW_PHY_CFG_RX_CHAIN_POS);

				drv->fw.phy_config &= phy_config;
			}
#endif
			drv->fw.valid_tx_ant =
				(drv->fw.phy_config & FW_PHY_CFG_TX_CHAIN) >>
				FW_PHY_CFG_TX_CHAIN_POS;
			drv->fw.valid_rx_ant =
				(drv->fw.phy_config & FW_PHY_CFG_RX_CHAIN) >>
				FW_PHY_CFG_RX_CHAIN_POS;
			break;
		case IWL_UCODE_TLV_SECURE_SEC_RT:
			iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_REGULAR,
					    tlv_len);
			drv->fw.type = IWL_FW_MVM;
			break;
		case IWL_UCODE_TLV_SECURE_SEC_INIT:
			iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_INIT,
					    tlv_len);
			drv->fw.type = IWL_FW_MVM;
			break;
		case IWL_UCODE_TLV_SECURE_SEC_WOWLAN:
			iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_WOWLAN,
					    tlv_len);
			drv->fw.type = IWL_FW_MVM;
			break;
		case IWL_UCODE_TLV_NUM_OF_CPU:
			if (tlv_len != sizeof(uint32_t)) {
				goto invalid_tlv_len;
			}
			num_of_cpus = le32_to_cpup((__le32 *)tlv_data);

			if (num_of_cpus == 2) {
				drv->fw.img[IWL_UCODE_REGULAR].is_dual_cpus =
					true;
				drv->fw.img[IWL_UCODE_INIT].is_dual_cpus = true;
				drv->fw.img[IWL_UCODE_WOWLAN].is_dual_cpus =
					true;
			} else if ((num_of_cpus > 2) || (num_of_cpus < 1)) {
				IWL_ERR(drv, "Driver support upto 2 CPUs\n");
				return ZX_ERR_INVALID_ARGS;
			}
			break;
		case IWL_UCODE_TLV_CSCHEME:
			if (iwl_store_cscheme(&drv->fw, tlv_data, tlv_len)) {
				goto invalid_tlv_len;
			}
			break;
		case IWL_UCODE_TLV_N_SCAN_CHANNELS:
			if (tlv_len != sizeof(uint32_t)) {
				goto invalid_tlv_len;
			}
			capa->n_scan_channels =
				le32_to_cpup((__le32 *)tlv_data);
			break;
		case IWL_UCODE_TLV_FW_VERSION: {
			__le32 *ptr = (void *)tlv_data;
			uint32_t major, minor;
			uint8_t local_comp;

			if (tlv_len != sizeof(uint32_t) * 3) {
				goto invalid_tlv_len;
			}

			major = le32_to_cpup(ptr++);
			minor = le32_to_cpup(ptr++);
			local_comp = (uint8_t)le32_to_cpup(ptr);

			if (strncmp((const char *)drv->fw.human_readable,
				    "stream:", 7))
				snprintf(drv->fw.fw_version,
					 sizeof(drv->fw.fw_version),
					 "%u.%08x.%hhu", major, minor,
					 local_comp);
			else
				snprintf(drv->fw.fw_version,
					 sizeof(drv->fw.fw_version),
					 "%u.%u.%hhu", major, minor,
					 local_comp);
			break;
		}
		case IWL_UCODE_TLV_FW_DBG_DEST: {
			struct iwl_fw_dbg_dest_tlv *dest = NULL;
			struct iwl_fw_dbg_dest_tlv_v1 *dest_v1 = NULL;
			uint8_t mon_mode;

			pieces->dbg_dest_ver = (uint8_t *)tlv_data;
			if (*pieces->dbg_dest_ver == 1) {
				dest = (void *)tlv_data;
			} else if (*pieces->dbg_dest_ver == 0) {
				dest_v1 = (void *)tlv_data;
			} else {
				IWL_ERR(drv,
					"The version is %d, and it is invalid\n",
					*pieces->dbg_dest_ver);
				break;
			}

#ifdef CPTCFG_IWLWIFI_DEVICE_TESTMODE
#ifdef CPTCFG_IWLWIFI_SUPPORT_DEBUG_OVERRIDES
			if (drv->trans->dbg_cfg.dbm_destination_path) {
				IWL_ERR(drv,
					"Ignoring destination, ini file present\n");
				break;
			}
#endif
#endif

			if (pieces->dbg_dest_tlv_init) {
				IWL_ERR(drv,
					"dbg destination ignored, already exists\n");
				break;
			}

			pieces->dbg_dest_tlv_init = true;

			if (dest_v1) {
				pieces->dbg_dest_tlv_v1 = dest_v1;
				mon_mode = dest_v1->monitor_mode;
			} else {
				pieces->dbg_dest_tlv = dest;
				mon_mode = dest->monitor_mode;
			}

			IWL_INFO(drv, "Found debug destination: %s\n",
				 get_fw_dbg_mode_string(mon_mode));

			drv->fw.dbg.n_dest_reg =
				(uint8_t)((dest_v1) ?
						  tlv_len -
							  offsetof(
								  struct iwl_fw_dbg_dest_tlv_v1,
								  reg_ops) :
						  tlv_len -
							  offsetof(
								  struct iwl_fw_dbg_dest_tlv,
								  reg_ops));

			drv->fw.dbg.n_dest_reg /=
				sizeof(drv->fw.dbg.dest_tlv->reg_ops[0]);

			break;
		}
		case IWL_UCODE_TLV_FW_DBG_CONF: {
			struct iwl_fw_dbg_conf_tlv *conf = (void *)tlv_data;

			if (!pieces->dbg_dest_tlv_init) {
				IWL_ERR(drv,
					"Ignore dbg config %d - no destination configured\n",
					conf->id);
				break;
			}

			if (conf->id >= ARRAY_SIZE(drv->fw.dbg.conf_tlv)) {
				IWL_ERR(drv, "Skip unknown configuration: %d\n",
					conf->id);
				break;
			}

			if (pieces->dbg_conf_tlv[conf->id]) {
				IWL_ERR(drv, "Ignore duplicate dbg config %d\n",
					conf->id);
				break;
			}

			if (conf->usniffer) {
				usniffer_req = true;
			}

			IWL_INFO(drv, "Found debug configuration: %d\n",
				 conf->id);

			pieces->dbg_conf_tlv[conf->id] = conf;
			pieces->dbg_conf_tlv_len[conf->id] = tlv_len;
			break;
		}
		case IWL_UCODE_TLV_FW_DBG_TRIGGER: {
			struct iwl_fw_dbg_trigger_tlv *trigger =
				(void *)tlv_data;
			uint32_t trigger_id = le32_to_cpu(trigger->id);

			if (trigger_id >= ARRAY_SIZE(drv->fw.dbg.trigger_tlv)) {
				IWL_ERR(drv, "Skip unknown trigger: %u\n",
					trigger->id);
				break;
			}

			if (pieces->dbg_trigger_tlv[trigger_id]) {
				IWL_ERR(drv,
					"Ignore duplicate dbg trigger %u\n",
					trigger->id);
				break;
			}

			IWL_INFO(drv, "Found debug trigger: %u\n", trigger->id);

			pieces->dbg_trigger_tlv[trigger_id] = trigger;
			pieces->dbg_trigger_tlv_len[trigger_id] = tlv_len;
			break;
		}
		case IWL_UCODE_TLV_FW_DBG_DUMP_LST: {
			if (tlv_len != sizeof(uint32_t)) {
				IWL_ERR(drv,
					"dbg lst mask size incorrect, skip\n");
				break;
			}

			drv->fw.dbg.dump_mask =
				le32_to_cpup((__le32 *)tlv_data);
			break;
		}
		case IWL_UCODE_TLV_SEC_RT_USNIFFER:
			*usniffer_images = true;
			iwl_store_ucode_sec(pieces, tlv_data,
					    IWL_UCODE_REGULAR_USNIFFER,
					    tlv_len);
			break;
		case IWL_UCODE_TLV_PAGING:
			if (tlv_len != sizeof(uint32_t)) {
				goto invalid_tlv_len;
			}
			paging_mem_size = le32_to_cpup((__le32 *)tlv_data);

			IWL_DEBUG_FW(
				drv,
				"Paging: paging enabled (size = %u bytes)\n",
				paging_mem_size);

			if (paging_mem_size > MAX_PAGING_IMAGE_SIZE) {
				IWL_ERR(drv,
					"Paging: driver supports up to %lu bytes for paging image\n",
					MAX_PAGING_IMAGE_SIZE);
				return ZX_ERR_INVALID_ARGS;
			}

			if (paging_mem_size & (FW_PAGING_SIZE - 1)) {
				IWL_ERR(drv,
					"Paging: image isn't multiple %lu\n",
					FW_PAGING_SIZE);
				return ZX_ERR_INVALID_ARGS;
			}

			drv->fw.img[IWL_UCODE_REGULAR].paging_mem_size =
				paging_mem_size;
			usniffer_img = IWL_UCODE_REGULAR_USNIFFER;
			drv->fw.img[usniffer_img].paging_mem_size =
				paging_mem_size;
			break;
		case IWL_UCODE_TLV_FW_GSCAN_CAPA:
			/* ignored */
			break;
		case IWL_UCODE_TLV_FW_MEM_SEG: {
			struct iwl_fw_dbg_mem_seg_tlv *dbg_mem =
				(void *)tlv_data;
			size_t size;
			struct iwl_fw_dbg_mem_seg_tlv *n;

			if (tlv_len != (sizeof(*dbg_mem))) {
				goto invalid_tlv_len;
			}

			IWL_DEBUG_INFO(drv, "Found debug memory segment: %u\n",
				       dbg_mem->data_type);

			size = sizeof(*pieces->dbg_mem_tlv) *
			       (pieces->n_mem_tlv + 1);
			n = realloc(pieces->dbg_mem_tlv, size);
			if (!n) {
				return ZX_ERR_NO_MEMORY;
			}
			pieces->dbg_mem_tlv = n;
			pieces->dbg_mem_tlv[pieces->n_mem_tlv] = *dbg_mem;
			pieces->n_mem_tlv++;
			break;
		}
		case IWL_UCODE_TLV_IML: {
			drv->fw.iml_len = tlv_len;
			drv->fw.iml = kmemdup(tlv_data, tlv_len);
			if (!drv->fw.iml) {
				return ZX_ERR_NO_MEMORY;
			}
			break;
		}
#if IS_ENABLED(CPTCFG_IWLFMAC)
		case IWL_UCODE_TLV_FW_FMAC_API_VERSION:
			if (tlv_len != sizeof(uint32_t)) {
				goto invalid_tlv_len;
			}
			capa->fmac_api_version =
				le32_to_cpup((__le32 *)tlv_data);
			break;
		case IWL_UCODE_TLV_FW_FMAC_RECOVERY_INFO: {
			struct {
				__le32 buf_addr;
				__le32 buf_size;
			} *recov_info = (void *)tlv_data;

			if (tlv_len != sizeof(*recov_info)) {
				goto invalid_tlv_len;
			}
			capa->fmac_error_log_addr =
				le32_to_cpu(recov_info->buf_addr);
			capa->fmac_error_log_size =
				le32_to_cpu(recov_info->buf_size);
		} break;
#endif
#if 0 // NEEDS_PORTING
      case IWL_UCODE_TLV_TYPE_BUFFER_ALLOCATION:
      case IWL_UCODE_TLV_TYPE_HCMD:
      case IWL_UCODE_TLV_TYPE_REGIONS:
      case IWL_UCODE_TLV_TYPE_TRIGGERS:
      case IWL_UCODE_TLV_TYPE_DEBUG_FLOW:
            if (iwlwifi_mod_params.enable_ini) {
				iwl_dbg_tlv_alloc(drv->trans, tlv, false);
            }
            break;
#endif // NEEDS_PORTING
		case IWL_UCODE_TLV_CMD_VERSIONS:
			if (tlv_len % sizeof(struct iwl_fw_cmd_version)) {
				IWL_ERR(drv,
					"Invalid length for command versions: %u\n",
					tlv_len);
				tlv_len /= sizeof(struct iwl_fw_cmd_version);
				tlv_len *= sizeof(struct iwl_fw_cmd_version);
			}
			if (WARN_ON(capa->cmd_versions))
				return ZX_ERR_INVALID_ARGS;
			capa->cmd_versions = kmemdup(tlv_data, tlv_len);
			if (!capa->cmd_versions)
				return ZX_ERR_NO_MEMORY;
			capa->n_cmd_versions =
				tlv_len / sizeof(struct iwl_fw_cmd_version);
			break;
#if 0 // NEEDS_PORTING
		case IWL_UCODE_TLV_PHY_INTEGRATION_VERSION:
			if (drv->fw.phy_integration_ver) {
				IWL_ERR(drv,
					"phy integration str ignored, already exists\n");
				break;
			}

			drv->fw.phy_integration_ver =
				kmemdup(tlv_data, tlv_len, GFP_KERNEL);
			if (!drv->fw.phy_integration_ver)
				return -ENOMEM;
			drv->fw.phy_integration_ver_len = tlv_len;
			break;
		case IWL_UCODE_TLV_SEC_TABLE_ADDR:
		case IWL_UCODE_TLV_D3_KEK_KCK_ADDR:
			iwl_drv_set_dump_exclude(drv, tlv_type,
						 tlv_data, tlv_len);
			break;
#endif // NEEDS_PORTING
		default:
			IWL_DEBUG_INFO(drv, "unknown TLV: %d\n", tlv_type);
			break;
		}
	}

	if (!fw_has_capa(capa, IWL_UCODE_TLV_CAPA_USNIFFER_UNIFIED) &&
	    usniffer_req && !*usniffer_images) {
		IWL_ERR(drv,
			"user selected to work with usniffer but usniffer image isn't "
			"available in ucode "
			"package\n");
		return ZX_ERR_INVALID_ARGS;
	}

	if (len) {
		IWL_ERR(drv, "invalid TLV after parsing: %zd\n", len);
		iwl_print_hex_dump(drv, IWL_DL_FW, (uint8_t *)data, len);
		return ZX_ERR_INVALID_ARGS;
	}

#if IS_ENABLED(CPTCFG_IWLFMAC)
	if (fw_has_capa(capa, IWL_UCODE_TLV_CAPA_MLME_OFFLOAD)) {
		drv->fw.type = IWL_FW_FMAC;
	}
#endif

	return 0;

invalid_tlv_len:
	IWL_ERR(drv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
tlv_error:
	iwl_print_hex_dump(drv, IWL_DL_FW, tlv_data, tlv_len);

	return ZX_ERR_INVALID_ARGS;
}

static int iwl_alloc_ucode(struct iwl_drv *drv,
			   struct iwl_firmware_pieces *pieces,
			   enum iwl_ucode_type type)
{
	int i;
	struct fw_desc *sec;

	sec = calloc(pieces->img[type].sec_counter, sizeof(*sec));
	if (!sec) {
		return ZX_ERR_NO_MEMORY;
	}
	drv->fw.img[type].sec = sec;
	drv->fw.img[type].num_sec = pieces->img[type].sec_counter;

	for (i = 0; i < pieces->img[type].sec_counter; i++)
		if (iwl_alloc_fw_desc(drv, &sec[i], get_sec(pieces, type, i))) {
			return ZX_ERR_NO_MEMORY;
		}

	return 0;
}

static int validate_sec_sizes(struct iwl_drv *drv,
			      struct iwl_firmware_pieces *pieces,
			      const struct iwl_cfg *cfg)
{
	IWL_DEBUG_INFO(drv, "f/w package hdr runtime inst size = %zd\n",
		       get_sec_size(pieces, IWL_UCODE_REGULAR,
				    IWL_UCODE_SECTION_INST));
	IWL_DEBUG_INFO(drv, "f/w package hdr runtime data size = %zd\n",
		       get_sec_size(pieces, IWL_UCODE_REGULAR,
				    IWL_UCODE_SECTION_DATA));
	IWL_DEBUG_INFO(drv, "f/w package hdr init inst size = %zd\n",
		       get_sec_size(pieces, IWL_UCODE_INIT,
				    IWL_UCODE_SECTION_INST));
	IWL_DEBUG_INFO(drv, "f/w package hdr init data size = %zd\n",
		       get_sec_size(pieces, IWL_UCODE_INIT,
				    IWL_UCODE_SECTION_DATA));

	/* Verify that uCode images will fit in card's SRAM. */
	if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) >
	    cfg->max_inst_size) {
		IWL_ERR(drv, "uCode instr len %zd too large to fit in\n",
			get_sec_size(pieces, IWL_UCODE_REGULAR,
				     IWL_UCODE_SECTION_INST));
		return -1;
	}

	if (get_sec_size(pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) >
	    cfg->max_data_size) {
		IWL_ERR(drv, "uCode data len %zd too large to fit in\n",
			get_sec_size(pieces, IWL_UCODE_REGULAR,
				     IWL_UCODE_SECTION_DATA));
		return -1;
	}

	if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST) >
	    cfg->max_inst_size) {
		IWL_ERR(drv, "uCode init instr len %zd too large to fit in\n",
			get_sec_size(pieces, IWL_UCODE_INIT,
				     IWL_UCODE_SECTION_INST));
		return -1;
	}

	if (get_sec_size(pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA) >
	    cfg->max_data_size) {
		IWL_ERR(drv, "uCode init data len %zd too large to fit in\n",
			get_sec_size(pieces, IWL_UCODE_REGULAR,
				     IWL_UCODE_SECTION_DATA));
		return -1;
	}
	return 0;
}

static struct iwl_op_mode *_iwl_op_mode_start(struct iwl_drv *drv,
					      struct iwlwifi_opmode_table *op)
{
	const struct iwl_op_mode_ops *ops = op->ops;
	struct dentry *dbgfs_dir = NULL;
	struct iwl_op_mode *op_mode = NULL;

#ifdef CPTCFG_IWLWIFI_DEBUGFS
	drv->dbgfs_op_mode = debugfs_create_dir(op->name, drv->dbgfs_drv);
	if (!drv->dbgfs_op_mode) {
		IWL_ERR(drv, "failed to create opmode debugfs directory\n");
		return op_mode;
	}
	dbgfs_dir = drv->dbgfs_op_mode;
#endif

	op_mode = ops->start(drv->trans, drv->trans->cfg, &drv->fw, dbgfs_dir);

	if (!op_mode) {
#ifdef CPTCFG_IWLWIFI_DEBUGFS
		debugfs_remove_recursive(drv->dbgfs_op_mode);
		drv->dbgfs_op_mode = NULL;
		return NULL;
#endif
	}

	iwl_stats_init(drv->trans->dev->irq_dispatcher);
	iwl_stats_start_reporting();

	return op_mode;
}

static void _iwl_op_mode_stop(struct iwl_drv *drv)
{
	/* op_mode can be NULL if its start failed */
	if (drv->op_mode) {
		iwl_op_mode_stop(drv->op_mode);
		drv->op_mode = NULL;

#ifdef CPTCFG_IWLWIFI_DEBUGFS
		debugfs_remove_recursive(drv->dbgfs_op_mode);
		drv->dbgfs_op_mode = NULL;
#endif
	}
}

/**
 * iwl_req_fw_callback - callback when firmware was loaded
 *
 * If loaded successfully, copies the firmware into buffers
 * for the card to fetch (via DMA).
 */
static zx_status_t iwl_req_fw_callback(struct firmware *ucode_raw,
				       void *context)
{
	struct iwl_drv *drv = context;
	struct iwl_fw *fw = &drv->fw;
	struct iwl_ucode_header *ucode;
	struct iwlwifi_opmode_table *op;
	int err;
	struct iwl_firmware_pieces *pieces;
	const unsigned int api_max = drv->trans->cfg->ucode_api_max;
	const unsigned int api_min = drv->trans->cfg->ucode_api_min;
	size_t trigger_tlv_sz[FW_DBG_TRIGGER_MAX];
	uint32_t api_ver;
	size_t i;
	bool load_module = false;
	bool usniffer_images = false;

#ifdef CPTCFG_IWLWIFI_SUPPORT_DEBUG_OVERRIDES
	const struct firmware *fw_dbg_config;
	int load_fw_dbg_err = ZX_ERR_NOT_FOUND;
#endif

	fw->ucode_capa.max_probe_length = IWL_DEFAULT_MAX_PROBE_LENGTH;
	fw->ucode_capa.standard_phy_calibration_size =
		IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE;
	fw->ucode_capa.n_scan_channels = IWL_DEFAULT_SCAN_CHANNELS;
	/* dump all fw memory areas by default except d3 debug data */
	fw->dbg.dump_mask = 0xfffdffff;

	pieces = calloc(1, sizeof(*pieces));
	if (!pieces) {
		goto out_free_fw;
	}

	if (!ucode_raw) {
		goto try_again;
	}

	IWL_DEBUG_INFO(drv, "Loaded firmware file '%s' (%zd bytes).\n",
		       drv->firmware_name, ucode_raw->size);

	/* Make sure that we got at least the API version number */
	if (ucode_raw->size < 4) {
		IWL_ERR(drv, "File size way too small!\n");
		goto try_again;
	}

	/* Data from ucode file:  header followed by uCode images */
	ucode = (struct iwl_ucode_header *)ucode_raw->data;

	if (ucode->ver) {
		err = iwl_parse_v1_v2_firmware(drv, ucode_raw, pieces);
	} else {
		err = iwl_parse_tlv_firmware(drv, ucode_raw, pieces,
					     &fw->ucode_capa, &usniffer_images);
	}

	if (err) {
		goto try_again;
	}

#ifdef CPTCFG_IWLWIFI_SUPPORT_DEBUG_OVERRIDES
	if (!ucode->ver && drv->trans->dbg_cfg.fw_dbg_conf) {
		load_fw_dbg_err =
			iwl_firmware_request(drv->trans->dev, &fw_dbg_config,
					     drv->trans->dbg_cfg.fw_dbg_conf);
		if (!load_fw_dbg_err) {
			err = iwl_parse_tlv_firmware(drv, fw_dbg_config, pieces,
						     &fw->ucode_capa,
						     &usniffer_images);
			if (err) {
				IWL_ERR(drv,
					"Failed to configure FW DBG data!\n");
			}
		}
	}
#endif

	if (fw_has_api(&drv->fw.ucode_capa, IWL_UCODE_TLV_API_NEW_VERSION)) {
		api_ver = drv->fw.ucode_ver;
	} else {
		api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
	}

	/*
   * api_ver should match the api version forming part of the
   * firmware filename ... but we don't check for that and only rely
   * on the API version read from firmware header from here on forward
   */
	if (api_ver < api_min || api_ver > api_max) {
		IWL_ERR(drv,
			"Driver unable to support your firmware API. "
			"Driver supports v%u, firmware is v%u.\n",
			api_max, api_ver);
		goto try_again;
	}

	/*
   * In mvm uCode there is no difference between data and instructions
   * sections.
   */
	if (fw->type == IWL_FW_DVM &&
	    validate_sec_sizes(drv, pieces, drv->trans->cfg)) {
		goto try_again;
	}

	/* Allocate ucode buffers for card's bus-master loading ... */

	/* Runtime instructions and 2 copies of data:
   * 1) unmodified from disk
   * 2) backup cache for save/restore during power-downs
   */
	for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
		if (iwl_alloc_ucode(drv, pieces, (enum iwl_ucode_type)i)) {
			goto out_free_fw;
		}

	if (pieces->dbg_dest_tlv_init) {
		size_t dbg_dest_size =
			sizeof(*drv->fw.dbg.dest_tlv) +
			sizeof(drv->fw.dbg.dest_tlv->reg_ops[0]) *
				drv->fw.dbg.n_dest_reg;

		drv->fw.dbg.dest_tlv = malloc(dbg_dest_size);

		if (!drv->fw.dbg.dest_tlv) {
			goto out_free_fw;
		}

		if (*pieces->dbg_dest_ver == 0) {
			memcpy(drv->fw.dbg.dest_tlv, pieces->dbg_dest_tlv_v1,
			       dbg_dest_size);
		} else {
			struct iwl_fw_dbg_dest_tlv_v1 *dest_tlv =
				drv->fw.dbg.dest_tlv;

			dest_tlv->version = pieces->dbg_dest_tlv->version;
			dest_tlv->monitor_mode =
				pieces->dbg_dest_tlv->monitor_mode;
			dest_tlv->size_power = pieces->dbg_dest_tlv->size_power;
			dest_tlv->wrap_count = pieces->dbg_dest_tlv->wrap_count;
			dest_tlv->write_ptr_reg =
				pieces->dbg_dest_tlv->write_ptr_reg;
			dest_tlv->base_shift = pieces->dbg_dest_tlv->base_shift;
			memcpy(dest_tlv->reg_ops, pieces->dbg_dest_tlv->reg_ops,
			       sizeof(drv->fw.dbg.dest_tlv->reg_ops[0]) *
				       drv->fw.dbg.n_dest_reg);

			/* In version 1 of the destination tlv, which is
       * relevant for internal buffer exclusively,
       * the base address is part of given with the length
       * of the buffer, and the size shift is give instead of
       * end shift. We now store these values in base_reg,
       * and end shift, and when dumping the data we'll
       * manipulate it for extracting both the length and
       * base address */
			dest_tlv->base_reg = pieces->dbg_dest_tlv->cfg_reg;
			dest_tlv->end_shift = pieces->dbg_dest_tlv->size_shift;
		}
	}

	for (i = 0; i < ARRAY_SIZE(drv->fw.dbg.conf_tlv); i++) {
		if (pieces->dbg_conf_tlv[i]) {
			drv->fw.dbg.conf_tlv[i] =
				kmemdup(pieces->dbg_conf_tlv[i],
					pieces->dbg_conf_tlv_len[i]);
			if (!pieces->dbg_conf_tlv_len[i]) {
				goto out_free_fw;
			}
		}
	}

	memset(&trigger_tlv_sz, 0xff, sizeof(trigger_tlv_sz));

	trigger_tlv_sz[FW_DBG_TRIGGER_MISSED_BEACONS] =
		sizeof(struct iwl_fw_dbg_trigger_missed_bcon);
	trigger_tlv_sz[FW_DBG_TRIGGER_CHANNEL_SWITCH] = 0;
	trigger_tlv_sz[FW_DBG_TRIGGER_FW_NOTIF] =
		sizeof(struct iwl_fw_dbg_trigger_cmd);
	trigger_tlv_sz[FW_DBG_TRIGGER_MLME] =
		sizeof(struct iwl_fw_dbg_trigger_mlme);
	trigger_tlv_sz[FW_DBG_TRIGGER_STATS] =
		sizeof(struct iwl_fw_dbg_trigger_stats);
	trigger_tlv_sz[FW_DBG_TRIGGER_RSSI] =
		sizeof(struct iwl_fw_dbg_trigger_low_rssi);
	trigger_tlv_sz[FW_DBG_TRIGGER_TXQ_TIMERS] =
		sizeof(struct iwl_fw_dbg_trigger_txq_timer);
	trigger_tlv_sz[FW_DBG_TRIGGER_TIME_EVENT] =
		sizeof(struct iwl_fw_dbg_trigger_time_event);
	trigger_tlv_sz[FW_DBG_TRIGGER_BA] =
		sizeof(struct iwl_fw_dbg_trigger_ba);
#ifdef CPTCFG_MAC80211_LATENCY_MEASUREMENTS
	trigger_tlv_sz[FW_DBG_TRIGGER_TX_LATENCY] =
		sizeof(struct iwl_fw_dbg_trigger_tx_latency);
#endif /* CPTCFG_MAC80211_LATENCY_MEASUREMENTS */
	trigger_tlv_sz[FW_DBG_TRIGGER_TDLS] =
		sizeof(struct iwl_fw_dbg_trigger_tdls);

	for (i = 0; i < ARRAY_SIZE(drv->fw.dbg.trigger_tlv); i++) {
		if (pieces->dbg_trigger_tlv[i]) {
			/*
       * If the trigger isn't long enough, WARN and exit.
       * Someone is trying to debug something and he won't
       * be able to catch the bug he is trying to chase.
       * We'd better be noisy to be sure he knows what's
       * going on.
       */
			if (WARN_ON(pieces->dbg_trigger_tlv_len[i] <
				    (trigger_tlv_sz[i] +
				     sizeof(struct iwl_fw_dbg_trigger_tlv)))) {
				goto out_free_fw;
			}
			drv->fw.dbg.trigger_tlv_len[i] =
				pieces->dbg_trigger_tlv_len[i];
			drv->fw.dbg.trigger_tlv[i] =
				kmemdup(pieces->dbg_trigger_tlv[i],
					drv->fw.dbg.trigger_tlv_len[i]);
			if (!drv->fw.dbg.trigger_tlv[i]) {
				goto out_free_fw;
			}
		}
	}

	/* Now that we can no longer fail, copy information */

	drv->fw.dbg.mem_tlv = pieces->dbg_mem_tlv;
	pieces->dbg_mem_tlv = NULL;
	drv->fw.dbg.n_mem_tlv = pieces->n_mem_tlv;

	/*
   * The (size - 16) / 12 formula is based on the information recorded
   * for each event, which is of mode 1 (including timestamp) for all
   * new microcodes that include this information.
   */
	fw->init_evtlog_ptr = pieces->init_evtlog_ptr;
	if (pieces->init_evtlog_size) {
		fw->init_evtlog_size = (pieces->init_evtlog_size - 16) / 12;
	} else {
		fw->init_evtlog_size =
			drv->trans->trans_cfg->base_params->max_event_log_size;
	}
	fw->init_errlog_ptr = pieces->init_errlog_ptr;
	fw->inst_evtlog_ptr = pieces->inst_evtlog_ptr;
	if (pieces->inst_evtlog_size) {
		fw->inst_evtlog_size = (pieces->inst_evtlog_size - 16) / 12;
	} else {
		fw->inst_evtlog_size =
			drv->trans->trans_cfg->base_params->max_event_log_size;
	}
	fw->inst_errlog_ptr = pieces->inst_errlog_ptr;

	/*
   * figure out the offset of chain noise reset and gain commands
   * base on the size of standard phy calibration commands table size
   */
	if (fw->ucode_capa.standard_phy_calibration_size >
	    IWL_MAX_PHY_CALIBRATE_TBL_SIZE) {
		fw->ucode_capa.standard_phy_calibration_size =
			IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
	}

	/* We have our copies now, allow OS release its copies */
	iwl_firmware_release(ucode_raw);

#ifdef CPTCFG_IWLWIFI_SUPPORT_DEBUG_OVERRIDES
	if (!load_fw_dbg_err) {
		iwl_firmware_release(fw_dbg_config);
	}
#endif

	mtx_lock(&iwlwifi_opmode_table_mtx);
	switch (fw->type) {
	case IWL_FW_DVM:
		op = &iwlwifi_opmode_table[DVM_OP_MODE];
		break;
	default:
		WARN(1, "Invalid fw type %d\n", fw->type);
		__FALLTHROUGH;
	case IWL_FW_MVM:
		op = &iwlwifi_opmode_table[MVM_OP_MODE];
		break;
#if IS_ENABLED(CPTCFG_IWLFMAC)
	case IWL_FW_FMAC:
		op = &iwlwifi_opmode_table[FMAC_OP_MODE];
		break;
#endif
	}

#if IS_ENABLED(CPTCFG_IWLXVT)
	if (iwlwifi_mod_params.xvt_default_mode && drv->fw.type == IWL_FW_MVM) {
		op = &iwlwifi_opmode_table[XVT_OP_MODE];
	}

	drv->xvt_mode_on = (op == &iwlwifi_opmode_table[XVT_OP_MODE]);
#endif

#if IS_ENABLED(CPTCFG_IWLTEST)
	if (iwlwifi_mod_params.trans_test) {
		op = &iwlwifi_opmode_table[TRANS_TEST_OP_MODE];
	}
#endif
	IWL_INFO(drv, "loaded firmware version %s op_mode %s\n",
		 drv->fw.fw_version, op->name);

	/* add this device to the list of devices using this op_mode */
	list_add_tail(&op->drv, &drv->list);

	if (op->ops) {
		drv->op_mode = _iwl_op_mode_start(drv, op);

		if (!drv->op_mode) {
			mtx_unlock(&iwlwifi_opmode_table_mtx);
			goto out_unbind;
		}
	} else {
		load_module = true;
	}
	mtx_unlock(&iwlwifi_opmode_table_mtx);

	/*
   * Complete the firmware request last so that
   * a driver unbind (stop) doesn't run while we
   * are doing the start() above.
   */
	sync_completion_signal(&drv->request_firmware_complete);

	/*
   * Load the module last so we don't block anything
   * else from proceeding if the module fails to load
   * or hangs loading.
   */
	if (load_module) {
		iwl_module_request("%s", op->name);
	}

	goto free;

try_again:
	/* try next, if any */
	iwl_firmware_release(ucode_raw);
	if (iwl_load_firmware(drv, false)) {
		goto out_unbind;
	}

free:
	if (pieces) {
		for (i = 0; i < ARRAY_SIZE(pieces->img); i++) {
			kfree(pieces->img[i].sec);
		}
		kfree(pieces->dbg_mem_tlv);
		kfree(pieces);
	}
	return ZX_OK;

out_free_fw:
	iwl_dealloc_ucode(drv);
	iwl_firmware_release(ucode_raw);
out_unbind:
	sync_completion_signal(&drv->request_firmware_complete);
	return ZX_ERR_INTERNAL;
}

zx_status_t iwl_drv_start(struct iwl_trans *trans, struct iwl_drv **out_drv)
{
	struct iwl_drv *drv;
	zx_status_t status = ZX_OK;

	drv = calloc(1, sizeof(*drv));
	if (!drv) {
		status = ZX_ERR_NO_MEMORY;
		goto err;
	}

	drv->trans = trans;
	drv->dev = trans->dev;

	drv->request_firmware_complete = SYNC_COMPLETION_INIT;
	list_initialize(&drv->list);

#ifdef CPTCFG_IWLWIFI_SUPPORT_DEBUG_OVERRIDES
	trans->dbg_cfg = current_dbg_config;
	iwl_dbg_cfg_load_ini(drv->trans->dev, &drv->trans->dbg_cfg);

	iwl_load_fw_dbg_tlv(drv->trans->dev, drv->trans);
#endif

#ifdef CPTCFG_IWLWIFI_DEBUGFS
	/* Create the device debugfs entries. */
	drv->dbgfs_drv =
		debugfs_create_dir(dev_name(trans->dev), iwl_dbgfs_root);

	if (!drv->dbgfs_drv) {
		IWL_ERR(drv, "failed to create debugfs directory\n");
		status = ZX_ERR_NO_MEMORY;
		goto err_free_tlv;
	}

	/* Create transport layer debugfs dir */
	drv->trans->dbgfs_dir = debugfs_create_dir("trans", drv->dbgfs_drv);
#endif

#ifdef CPTCFG_IWLWIFI_DEVICE_TESTMODE
	iwl_tm_gnl_add(drv->trans);
#endif

	status = iwl_load_firmware(drv, true);
	if (status != ZX_OK) {
		IWL_ERR(trans, "Couldn't request the fw: %s\n",
			zx_status_get_string(status));
		goto err_fw;
	}

#if IS_ENABLED(CPTCFG_IWLXVT)
	status = iwl_create_sysfs_file(drv);
	if (status != ZX_OK) {
		IWL_ERR(trans, "Couldn't create sysfs entry\n");
		goto err_fw;
	}
#endif

	*out_drv = drv;
	return status;

err_fw:
#ifdef CPTCFG_IWLWIFI_DEVICE_TESTMODE
	iwl_tm_gnl_remove(drv->trans);
#endif
#ifdef CPTCFG_IWLWIFI_DEBUGFS
err_free_dbgfs:
	debugfs_remove_recursive(drv->dbgfs_drv);
err_free_tlv:
	iwl_fw_dbg_free(drv->trans);
#endif
	kfree(drv);
err:
	return status;
}

void iwl_drv_stop(struct iwl_drv *drv)
{
	if (!drv) {
		return;
	}

	sync_completion_wait(&drv->request_firmware_complete, ZX_SEC(5));

	_iwl_op_mode_stop(drv);

	iwl_dealloc_ucode(drv);

	mtx_lock(&iwlwifi_opmode_table_mtx);
	/*
   * List is empty (this item wasn't added)
   * when firmware loading failed -- in that
   * case we can't remove it from any list.
   */
	if (!list_is_empty(&drv->list)) {
		list_remove_tail(&drv->list);
	}
	mtx_unlock(&iwlwifi_opmode_table_mtx);
	mtx_destroy(&iwlwifi_opmode_table_mtx);

#ifdef CPTCFG_IWLWIFI_DEBUGFS
	drv->trans->ops->debugfs_cleanup(drv->trans);

	debugfs_remove_recursive(drv->dbgfs_drv);
#endif

#ifdef CPTCFG_IWLWIFI_SUPPORT_DEBUG_OVERRIDES
	iwl_dbg_cfg_free(&drv->trans->dbg_cfg);
#endif
#if 0 // NEEDS_PORTING
    iwl_fw_dbg_free(drv->trans);
#endif // NEEDS_PORTING

#if IS_ENABLED(CPTCFG_IWLXVT)
	iwl_remove_sysfs_file(drv);
#endif

#ifdef CPTCFG_IWLWIFI_DEVICE_TESTMODE
	iwl_tm_gnl_remove(drv->trans);
#endif

	kfree(drv);
}

/* shared module parameters */
struct iwl_mod_params iwlwifi_mod_params = {
	.fw_restart = true,
	.bt_coex_active = true,
	.power_level = IWL_POWER_INDEX_1,
	.d0i3_disable = IS_ENABLED(CPTCFG_IWLWIFI_D0I3_DEFAULT_DISABLE),
	.d0i3_timeout = 1000,
	.uapsd_disable = IWL_DISABLE_UAPSD_BSS | IWL_DISABLE_UAPSD_P2P_CLIENT,
	/* the rest are 0 by default */
};

zx_status_t iwl_opmode_register(const char *name,
				const struct iwl_op_mode_ops *ops)
{
	size_t i;
	struct iwl_drv *drv;
	struct iwlwifi_opmode_table *op;

	mtx_lock(&iwlwifi_opmode_table_mtx);
	for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) {
		op = &iwlwifi_opmode_table[i];
		if (strcmp(op->name, name)) {
			continue;
		}
		op->ops = ops;

		list_for_every_entry(&op->drv, drv, struct iwl_drv, list)
		{
			drv->op_mode = _iwl_op_mode_start(drv, op);
			if (!drv->op_mode) {
				mtx_unlock(&iwlwifi_opmode_table_mtx);
				return ZX_ERR_INTERNAL;
			}
		}

		mtx_unlock(&iwlwifi_opmode_table_mtx);
		return ZX_OK;
	}
	mtx_unlock(&iwlwifi_opmode_table_mtx);
	return ZX_ERR_IO;
}

void iwl_opmode_deregister(const char *name)
{
#if 0 // NEEDS_PORTING
    int i;
    struct iwl_drv* drv;

    mutex_lock(&iwlwifi_opmode_table_mtx);
    for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) {
        if (strcmp(iwlwifi_opmode_table[i].name, name)) {
            continue;
        }
        iwlwifi_opmode_table[i].ops = NULL;

        /* call the stop routine for all devices */
        list_for_each_entry(drv, &iwlwifi_opmode_table[i].drv, list)
        _iwl_op_mode_stop(drv);

        mutex_unlock(&iwlwifi_opmode_table_mtx);
        return;
    }
    mutex_unlock(&iwlwifi_opmode_table_mtx);
#endif // NEEDS_PORTING
}

zx_status_t iwl_drv_init(void)
{
	size_t i;

	mtx_init(&iwlwifi_opmode_table_mtx, mtx_plain);

	for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) {
		list_initialize(&iwlwifi_opmode_table[i].drv);
	}

#ifdef CPTCFG_IWLWIFI_DEVICE_TESTMODE
	if (iwl_tm_gnl_init()) {
		return -EFAULT;
	}
#endif

#if IS_ENABLED(CPTCFG_IWLXVT)
	iwl_kobj = kobject_create_and_add("devices", &THIS_MODULE->mkobj.kobj);
	if (!iwl_kobj) {
		return -ENOMEM;
	}
#endif

	IWL_INFO(nullptr, DRV_DESCRIPTION "\n");
	IWL_INFO(nullptr, DRV_COPYRIGHT "\n");

#ifdef CPTCFG_IWLWIFI_DEBUGFS
	/* Create the root of iwlwifi debugfs subsystem. */
	iwl_dbgfs_root = debugfs_create_dir(DRV_NAME, NULL);

	if (!iwl_dbgfs_root) {
		return -EFAULT;
	}
#endif

#if 0 // NEEDS_PORTING
    return iwl_pci_register_driver();
#endif // NEEDS_PORTING
	return ZX_OK;
}

#if 0 // NEEDS_PORTING
static void __exit iwl_drv_exit(void) {
    iwl_pci_unregister_driver();

#ifdef CONFIG_IWLWIFI_DEBUGFS
    debugfs_remove_recursive(iwl_dbgfs_root);
#endif
}
module_exit(iwl_drv_exit);

#ifdef CONFIG_IWLWIFI_DEBUG
module_param_named(debug, iwlwifi_mod_params.debug_level, uint, 0644);
MODULE_PARM_DESC(debug, "debug output mask");
#endif

module_param_named(swcrypto, iwlwifi_mod_params.swcrypto, int, 0444);
MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
module_param_named(11n_disable, iwlwifi_mod_params.disable_11n, uint, 0444);
MODULE_PARM_DESC(11n_disable,
                 "disable 11n functionality, bitmap: 1: full, 2: disable agg TX, 4: disable agg RX, 8 enable agg TX");
module_param_named(amsdu_size, iwlwifi_mod_params.amsdu_size, int, 0444);
MODULE_PARM_DESC(amsdu_size,
		 "amsdu size 0: 12K for multi Rx queue devices, 2K for AX210 devices, "
		 "4K for other devices 1:4K 2:8K 3:12K (16K buffers) 4: 2K (default 0)");
module_param_named(fw_restart, iwlwifi_mod_params.fw_restart, bool, 0444);
MODULE_PARM_DESC(fw_restart, "restart firmware in case of error (default true)");

module_param_named(nvm_file, iwlwifi_mod_params.nvm_file, charp, 0444);
MODULE_PARM_DESC(nvm_file, "NVM file name");

module_param_named(uapsd_disable, iwlwifi_mod_params.uapsd_disable, uint, 0644);
MODULE_PARM_DESC(uapsd_disable,
                 "disable U-APSD functionality bitmap 1: BSS 2: P2P Client (default: 3)");

static int enable_ini_set(const char *arg, const struct kernel_param *kp)
{
	int ret = 0;
	bool res;
	__u32 new_enable_ini;

	/* in case the argument type is a number */
	ret = kstrtou32(arg, 0, &new_enable_ini);
	if (!ret) {
		if (new_enable_ini > ENABLE_INI) {
			pr_err("enable_ini cannot be %d, in range 0-16\n", new_enable_ini);
			return -EINVAL;
		}
		goto out;
	}

	/* in case the argument type is boolean */
	ret = kstrtobool(arg, &res);
	if (ret)
		return ret;
	new_enable_ini = (res ? ENABLE_INI : 0);

out:
	iwlwifi_mod_params.enable_ini = new_enable_ini;
	return 0;
}

static const struct kernel_param_ops enable_ini_ops = {
	.set = enable_ini_set
};

module_param_cb(enable_ini, &enable_ini_ops, &iwlwifi_mod_params.enable_ini, 0644);
MODULE_PARM_DESC(enable_ini,
		 "0:disable, 1-15:FW_DBG_PRESET Values, 16:enabled without preset value defined,"
		 "Debug INI TLV FW debug infrastructure (default: 16)");

/*
 * set bt_coex_active to true, uCode will do kill/defer
 * every time the priority line is asserted (BT is sending signals on the
 * priority line in the PCIx).
 * set bt_coex_active to false, uCode will ignore the BT activity and
 * perform the normal operation
 *
 * User might experience transmit issue on some platform due to WiFi/BT
 * co-exist problem. The possible behaviors are:
 *   Able to scan and finding all the available AP
 *   Not able to associate with any AP
 * On those platforms, WiFi communication can be restored by set
 * "bt_coex_active" module parameter to "false"
 *
 * default: bt_coex_active = true (BT_COEX_ENABLE)
 */
module_param_named(bt_coex_active, iwlwifi_mod_params.bt_coex_active,
                   bool, 0444);
MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");

module_param_named(led_mode, iwlwifi_mod_params.led_mode, int, 0444);
MODULE_PARM_DESC(led_mode, "0=system default, "
                 "1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0)");

module_param_named(power_save, iwlwifi_mod_params.power_save, bool, 0444);
MODULE_PARM_DESC(power_save,
                 "enable WiFi power management (default: disable)");

module_param_named(power_level, iwlwifi_mod_params.power_level, int, 0444);
MODULE_PARM_DESC(power_level,
                 "default power save level (range from 1 - 5, default: 1)");

module_param_named(disable_11ac, iwlwifi_mod_params.disable_11ac, bool, 0444);
MODULE_PARM_DESC(disable_11ac, "Disable VHT capabilities (default: false)");

module_param_named(remove_when_gone,
                   iwlwifi_mod_params.remove_when_gone, bool, 0444);
MODULE_PARM_DESC(remove_when_gone,
                 "Remove dev from PCIe bus if it is deemed inaccessible (default: false)");

module_param_named(disable_11ax, iwlwifi_mod_params.disable_11ax, bool,
		   S_IRUGO);
MODULE_PARM_DESC(disable_11ax, "Disable HE capabilities (default: false)");
#endif // NEEDS_PORTING