iwl-drv.c 35.7 KB
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/******************************************************************************
 *
 * This file is provided under a dual BSD/GPLv2 license.  When using or
 * redistributing this file, you may do so under either license.
 *
 * GPL LICENSE SUMMARY
 *
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 * Copyright(c) 2007 - 2013 Intel Corporation. All rights reserved.
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 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
 * USA
 *
 * The full GNU General Public License is included in this distribution
 * in the file called LICENSE.GPL.
 *
 * Contact Information:
 *  Intel Linux Wireless <ilw@linux.intel.com>
 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
 * BSD LICENSE
 *
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 * Copyright(c) 2005 - 2013 Intel Corporation. All rights reserved.
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 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *  * Neither the name Intel Corporation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *****************************************************************************/
#include <linux/completion.h>
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#include <linux/dma-mapping.h>
#include <linux/firmware.h>
#include <linux/module.h>
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#include <linux/vmalloc.h>
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#include "iwl-drv.h"
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#include "iwl-debug.h"
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#include "iwl-trans.h"
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#include "iwl-op-mode.h"
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#include "iwl-agn-hw.h"
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#include "iwl-fw.h"
#include "iwl-config.h"
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#include "iwl-modparams.h"
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/* private includes */
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#include "iwl-fw-file.h"
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/******************************************************************************
 *
 * module boiler plate
 *
 ******************************************************************************/

/*
 * module name, copyright, version, etc.
 */
#define DRV_DESCRIPTION	"Intel(R) Wireless WiFi driver for Linux"

#ifdef CONFIG_IWLWIFI_DEBUG
#define VD "d"
#else
#define VD
#endif

#define DRV_VERSION     IWLWIFI_VERSION VD

MODULE_DESCRIPTION(DRV_DESCRIPTION);
MODULE_VERSION(DRV_VERSION);
MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
MODULE_LICENSE("GPL");

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#ifdef CONFIG_IWLWIFI_DEBUGFS
static struct dentry *iwl_dbgfs_root;
#endif

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/**
 * struct iwl_drv - drv common data
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 * @list: list of drv structures using this opmode
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 * @fw: the iwl_fw structure
 * @op_mode: the running op_mode
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 * @trans: transport layer
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 * @dev: for debug prints only
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 * @cfg: configuration struct
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 * @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 {
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	struct list_head list;
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	struct iwl_fw fw;

	struct iwl_op_mode *op_mode;
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	struct iwl_trans *trans;
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	struct device *dev;
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	const struct iwl_cfg *cfg;
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	int fw_index;                   /* firmware we're trying to load */
	char firmware_name[25];         /* name of firmware file to load */

	struct completion request_firmware_complete;
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#ifdef CONFIG_IWLWIFI_DEBUGFS
	struct dentry *dbgfs_drv;
	struct dentry *dbgfs_trans;
	struct dentry *dbgfs_op_mode;
#endif
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};

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#define DVM_OP_MODE	0
#define MVM_OP_MODE	1
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/* Protects the table contents, i.e. the ops pointer & drv list */
static struct mutex iwlwifi_opmode_table_mtx;
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static struct iwlwifi_opmode_table {
	const char *name;			/* name: iwldvm, iwlmvm, etc */
	const struct iwl_op_mode_ops *ops;	/* pointer to op_mode ops */
	struct list_head drv;		/* list of devices using this op_mode */
} iwlwifi_opmode_table[] = {		/* ops set when driver is initialized */
	{ .name = "iwldvm", .ops = NULL },
	{ .name = "iwlmvm", .ops = NULL },
};
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/*
 * struct fw_sec: Just for the image parsing proccess.
 * For the fw storage we are using struct fw_desc.
 */
struct fw_sec {
	const void *data;		/* the sec data */
	size_t size;			/* section size */
	u32 offset;			/* offset of writing in the device */
};

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

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

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static void iwl_dealloc_ucode(struct iwl_drv *drv)
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{
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	int i;
	for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
		iwl_free_fw_img(drv, drv->fw.img + i);
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}

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

	desc->data = NULL;

	if (!sec || !sec->size)
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		return -EINVAL;

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	data = vmalloc(sec->size);
	if (!data)
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		return -ENOMEM;

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

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	return 0;
}

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static void iwl_req_fw_callback(const struct firmware *ucode_raw,
				void *context);
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#define UCODE_EXPERIMENTAL_INDEX	100
#define UCODE_EXPERIMENTAL_TAG		"exp"

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static int iwl_request_firmware(struct iwl_drv *drv, bool first)
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{
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	const char *name_pre = drv->cfg->fw_name_pre;
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	char tag[8];

	if (first) {
#ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
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		drv->fw_index = UCODE_EXPERIMENTAL_INDEX;
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		strcpy(tag, UCODE_EXPERIMENTAL_TAG);
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	} else if (drv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
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#endif
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		drv->fw_index = drv->cfg->ucode_api_max;
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		sprintf(tag, "%d", drv->fw_index);
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	} else {
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		drv->fw_index--;
		sprintf(tag, "%d", drv->fw_index);
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	}

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	if (drv->fw_index < drv->cfg->ucode_api_min) {
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		IWL_ERR(drv, "no suitable firmware found!\n");
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		return -ENOENT;
	}

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	sprintf(drv->firmware_name, "%s%s%s", name_pre, tag, ".ucode");
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	IWL_DEBUG_INFO(drv, "attempting to load firmware %s'%s'\n",
		       (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
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				? "EXPERIMENTAL " : "",
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		       drv->firmware_name);
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	return request_firmware_nowait(THIS_MODULE, 1, drv->firmware_name,
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				       drv->trans->dev,
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				       GFP_KERNEL, drv, iwl_req_fw_callback);
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}

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struct fw_img_parsing {
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	struct fw_sec sec[IWL_UCODE_SECTION_MAX];
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	int sec_counter;
};

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/*
 * struct fw_sec_parsing: to extract fw section and it's offset from tlv
 */
struct fw_sec_parsing {
	__le32 offset;
	const u8 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;
	__le64 calib;
} __packed;

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struct iwl_firmware_pieces {
	struct fw_img_parsing img[IWL_UCODE_TYPE_MAX];
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	u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
	u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
};

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/*
 * 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 set_sec_data(struct iwl_firmware_pieces *pieces,
			 enum iwl_ucode_type type,
			 int sec,
			 const void *data)
{
	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)
{
	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,
			   u32 offset)
{
	pieces->img[type].sec[sec].offset = offset;
}

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/*
 * 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;

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

	sec_parse = (struct fw_sec_parsing *)data;

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

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

	return 0;
}

static int iwl_set_default_calib(struct iwl_drv *drv, const u8 *data)
{
	struct iwl_tlv_calib_data *def_calib =
					(struct iwl_tlv_calib_data *)data;
	u32 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 -EINVAL;
	}
	drv->fw.default_calib[ucode_type] = le64_to_cpu(def_calib->calib);
	return 0;
}

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static int iwl_parse_v1_v2_firmware(struct iwl_drv *drv,
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				    const struct firmware *ucode_raw,
				    struct iwl_firmware_pieces *pieces)
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{
	struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
	u32 api_ver, hdr_size, build;
	char buildstr[25];
	const u8 *src;

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	drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
	api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
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	switch (api_ver) {
	default:
		hdr_size = 28;
		if (ucode_raw->size < hdr_size) {
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			IWL_ERR(drv, "File size too small!\n");
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			return -EINVAL;
		}
		build = le32_to_cpu(ucode->u.v2.build);
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		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));
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		src = ucode->u.v2.data;
		break;
	case 0:
	case 1:
	case 2:
		hdr_size = 24;
		if (ucode_raw->size < hdr_size) {
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			IWL_ERR(drv, "File size too small!\n");
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			return -EINVAL;
		}
		build = 0;
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		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));
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		src = ucode->u.v1.data;
		break;
	}

	if (build)
		sprintf(buildstr, " build %u%s", build,
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		       (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
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				? " (EXP)" : "");
	else
		buildstr[0] = '\0';

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	snprintf(drv->fw.fw_version,
		 sizeof(drv->fw.fw_version),
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		 "%u.%u.%u.%u%s",
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		 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),
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		 buildstr);

	/* Verify size of file vs. image size info in file's header */
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	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)) {
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		IWL_ERR(drv,
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			"uCode file size %d does not match expected size\n",
			(int)ucode_raw->size);
		return -EINVAL;
	}


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	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);
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	return 0;
}

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static int iwl_parse_tlv_firmware(struct iwl_drv *drv,
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				const struct firmware *ucode_raw,
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				struct iwl_firmware_pieces *pieces,
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				struct iwl_ucode_capabilities *capa)
{
	struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
	struct iwl_ucode_tlv *tlv;
	size_t len = ucode_raw->size;
	const u8 *data;
	u32 tlv_len;
	enum iwl_ucode_tlv_type tlv_type;
	const u8 *tlv_data;
	char buildstr[25];
	u32 build;

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

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

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

	if (build)
		sprintf(buildstr, " build %u%s", build,
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		       (drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
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				? " (EXP)" : "");
	else
		buildstr[0] = '\0';

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	snprintf(drv->fw.fw_version,
		 sizeof(drv->fw.fw_version),
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		 "%u.%u.%u.%u%s",
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		 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),
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		 buildstr);

	data = ucode->data;

	len -= sizeof(*ucode);

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

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

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

		switch (tlv_type) {
		case IWL_UCODE_TLV_INST:
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			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);
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			break;
		case IWL_UCODE_TLV_DATA:
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			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);
549 550
			break;
		case IWL_UCODE_TLV_INIT:
551 552 553 554 555 556 557
			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);
558 559
			break;
		case IWL_UCODE_TLV_INIT_DATA:
560 561 562 563 564 565 566
			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);
567 568
			break;
		case IWL_UCODE_TLV_BOOT:
J
Johannes Berg 已提交
569
			IWL_ERR(drv, "Found unexpected BOOT ucode\n");
570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636
			break;
		case IWL_UCODE_TLV_PROBE_MAX_LEN:
			if (tlv_len != sizeof(u32))
				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 u32 */
			if (tlv_len < sizeof(u32))
				goto invalid_tlv_len;
			/* and a proper number of u32s */
			if (tlv_len % sizeof(u32))
				goto invalid_tlv_len;
			/*
			 * This driver only reads the first u32 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_INIT_EVTLOG_PTR:
			if (tlv_len != sizeof(u32))
				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(u32))
				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(u32))
				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(u32))
				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(u32))
				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(u32))
				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;
J
Johannes Berg 已提交
637
			drv->fw.enhance_sensitivity_table = true;
638 639
			break;
		case IWL_UCODE_TLV_WOWLAN_INST:
640 641 642 643 644 645 646
			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);
647 648
			break;
		case IWL_UCODE_TLV_WOWLAN_DATA:
649 650 651 652 653 654 655
			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);
656 657 658 659 660 661 662
			break;
		case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
			if (tlv_len != sizeof(u32))
				goto invalid_tlv_len;
			capa->standard_phy_calibration_size =
					le32_to_cpup((__le32 *)tlv_data);
			break;
663 664 665
		 case IWL_UCODE_TLV_SEC_RT:
			iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_REGULAR,
					    tlv_len);
666
			drv->fw.mvm_fw = true;
667 668 669 670
			break;
		case IWL_UCODE_TLV_SEC_INIT:
			iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_INIT,
					    tlv_len);
671
			drv->fw.mvm_fw = true;
672 673 674 675
			break;
		case IWL_UCODE_TLV_SEC_WOWLAN:
			iwl_store_ucode_sec(pieces, tlv_data, IWL_UCODE_WOWLAN,
					    tlv_len);
676
			drv->fw.mvm_fw = true;
677 678 679 680 681 682 683 684 685 686 687 688
			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(u32))
				goto invalid_tlv_len;
			drv->fw.phy_config = le32_to_cpup((__le32 *)tlv_data);
			break;
689
		default:
J
Johannes Berg 已提交
690
			IWL_DEBUG_INFO(drv, "unknown TLV: %d\n", tlv_type);
691 692 693 694 695
			break;
		}
	}

	if (len) {
J
Johannes Berg 已提交
696 697
		IWL_ERR(drv, "invalid TLV after parsing: %zd\n", len);
		iwl_print_hex_dump(drv, IWL_DL_FW, (u8 *)data, len);
698 699 700 701 702 703
		return -EINVAL;
	}

	return 0;

 invalid_tlv_len:
J
Johannes Berg 已提交
704
	IWL_ERR(drv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
705
 tlv_error:
J
Johannes Berg 已提交
706
	iwl_print_hex_dump(drv, IWL_DL_FW, tlv_data, tlv_len);
707 708 709 710

	return -EINVAL;
}

711 712 713
static int iwl_alloc_ucode(struct iwl_drv *drv,
			   struct iwl_firmware_pieces *pieces,
			   enum iwl_ucode_type type)
D
David Spinadel 已提交
714 715 716 717 718 719
{
	int i;
	for (i = 0;
	     i < IWL_UCODE_SECTION_MAX && get_sec_size(pieces, type, i);
	     i++)
		if (iwl_alloc_fw_desc(drv, &(drv->fw.img[type].sec[i]),
720 721
				      get_sec(pieces, type, i)))
			return -ENOMEM;
D
David Spinadel 已提交
722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774
	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;
}

775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818
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 CONFIG_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->cfg, &drv->fw, dbgfs_dir);

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

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

819
/**
820
 * iwl_req_fw_callback - callback when firmware was loaded
821 822 823 824
 *
 * If loaded successfully, copies the firmware into buffers
 * for the card to fetch (via DMA).
 */
825
static void iwl_req_fw_callback(const struct firmware *ucode_raw, void *context)
826
{
J
Johannes Berg 已提交
827 828
	struct iwl_drv *drv = context;
	struct iwl_fw *fw = &drv->fw;
829
	struct iwl_ucode_header *ucode;
830
	struct iwlwifi_opmode_table *op;
831
	int err;
832
	struct iwl_firmware_pieces pieces;
833 834 835
	const unsigned int api_max = drv->cfg->ucode_api_max;
	unsigned int api_ok = drv->cfg->ucode_api_ok;
	const unsigned int api_min = drv->cfg->ucode_api_min;
836
	u32 api_ver;
D
David Spinadel 已提交
837
	int i;
838
	bool load_module = false;
839 840 841 842 843 844 845 846 847 848 849

	fw->ucode_capa.max_probe_length = 200;
	fw->ucode_capa.standard_phy_calibration_size =
			IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE;

	if (!api_ok)
		api_ok = api_max;

	memset(&pieces, 0, sizeof(pieces));

	if (!ucode_raw) {
J
Johannes Berg 已提交
850 851
		if (drv->fw_index <= api_ok)
			IWL_ERR(drv,
852
				"request for firmware file '%s' failed.\n",
J
Johannes Berg 已提交
853
				drv->firmware_name);
854 855 856
		goto try_again;
	}

J
Johannes Berg 已提交
857 858
	IWL_DEBUG_INFO(drv, "Loaded firmware file '%s' (%zd bytes).\n",
		       drv->firmware_name, ucode_raw->size);
859 860 861

	/* Make sure that we got at least the API version number */
	if (ucode_raw->size < 4) {
J
Johannes Berg 已提交
862
		IWL_ERR(drv, "File size way too small!\n");
863 864 865 866 867 868 869
		goto try_again;
	}

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

	if (ucode->ver)
J
Johannes Berg 已提交
870
		err = iwl_parse_v1_v2_firmware(drv, ucode_raw, &pieces);
871
	else
J
Johannes Berg 已提交
872
		err = iwl_parse_tlv_firmware(drv, ucode_raw, &pieces,
873 874 875 876 877
					   &fw->ucode_capa);

	if (err)
		goto try_again;

J
Johannes Berg 已提交
878
	api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
879 880 881 882 883 884 885

	/*
	 * 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
	 */
	/* no api version check required for experimental uCode */
J
Johannes Berg 已提交
886
	if (drv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
887
		if (api_ver < api_min || api_ver > api_max) {
J
Johannes Berg 已提交
888
			IWL_ERR(drv,
889 890 891 892 893 894 895 896
				"Driver unable to support your firmware API. "
				"Driver supports v%u, firmware is v%u.\n",
				api_max, api_ver);
			goto try_again;
		}

		if (api_ver < api_ok) {
			if (api_ok != api_max)
J
Johannes Berg 已提交
897
				IWL_ERR(drv, "Firmware has old API version, "
898 899 900
					"expected v%u through v%u, got v%u.\n",
					api_ok, api_max, api_ver);
			else
J
Johannes Berg 已提交
901
				IWL_ERR(drv, "Firmware has old API version, "
902 903
					"expected v%u, got v%u.\n",
					api_max, api_ver);
J
Johannes Berg 已提交
904
			IWL_ERR(drv, "New firmware can be obtained from "
905 906 907 908
				      "http://www.intellinuxwireless.org/.\n");
		}
	}

J
Johannes Berg 已提交
909
	IWL_INFO(drv, "loaded firmware version %s", drv->fw.fw_version);
910

911 912 913 914
	/*
	 * In mvm uCode there is no difference between data and instructions
	 * sections.
	 */
915
	if (!fw->mvm_fw && validate_sec_sizes(drv, &pieces, drv->cfg))
916 917 918 919 920 921 922
		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 */
D
David Spinadel 已提交
923
	for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
924 925
		if (iwl_alloc_ucode(drv, &pieces, i))
			goto out_free_fw;
926 927 928 929 930 931 932 933

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

	/*
	 * 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.
	 */
934
	fw->init_evtlog_ptr = pieces.init_evtlog_ptr;
935
	if (pieces.init_evtlog_size)
936
		fw->init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
937
	else
938
		fw->init_evtlog_size =
939
			drv->cfg->base_params->max_event_log_size;
940 941
	fw->init_errlog_ptr = pieces.init_errlog_ptr;
	fw->inst_evtlog_ptr = pieces.inst_evtlog_ptr;
942
	if (pieces.inst_evtlog_size)
943
		fw->inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
944
	else
945
		fw->inst_evtlog_size =
946
			drv->cfg->base_params->max_event_log_size;
947
	fw->inst_errlog_ptr = pieces.inst_errlog_ptr;
948 949 950 951 952 953 954 955 956 957 958 959 960

	/*
	 * 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 */
	release_firmware(ucode_raw);

J
Johannes Berg 已提交
961
	mutex_lock(&iwlwifi_opmode_table_mtx);
962
	op = &iwlwifi_opmode_table[DVM_OP_MODE];
963

964 965 966 967
	/* add this device to the list of devices using this op_mode */
	list_add_tail(&drv->list, &op->drv);

	if (op->ops) {
968
		drv->op_mode = _iwl_op_mode_start(drv, op);
969

D
Dan Carpenter 已提交
970 971
		if (!drv->op_mode) {
			mutex_unlock(&iwlwifi_opmode_table_mtx);
972
			goto out_unbind;
D
Dan Carpenter 已提交
973
		}
974
	} else {
975
		load_module = true;
976
	}
J
Johannes Berg 已提交
977
	mutex_unlock(&iwlwifi_opmode_table_mtx);
978

979 980 981 982 983 984
	/*
	 * Complete the firmware request last so that
	 * a driver unbind (stop) doesn't run while we
	 * are doing the start() above.
	 */
	complete(&drv->request_firmware_complete);
985 986 987 988 989 990 991 992

	/*
	 * 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)
		request_module("%s", op->name);
993 994 995 996 997
	return;

 try_again:
	/* try next, if any */
	release_firmware(ucode_raw);
J
Johannes Berg 已提交
998
	if (iwl_request_firmware(drv, false))
999 1000 1001
		goto out_unbind;
	return;

1002
 out_free_fw:
J
Johannes Berg 已提交
1003 1004
	IWL_ERR(drv, "failed to allocate pci memory\n");
	iwl_dealloc_ucode(drv);
1005 1006
	release_firmware(ucode_raw);
 out_unbind:
J
Johannes Berg 已提交
1007
	complete(&drv->request_firmware_complete);
1008
	device_release_driver(drv->trans->dev);
1009 1010
}

1011
struct iwl_drv *iwl_drv_start(struct iwl_trans *trans,
1012
			      const struct iwl_cfg *cfg)
1013
{
J
Johannes Berg 已提交
1014
	struct iwl_drv *drv;
1015 1016
	int ret;

J
Johannes Berg 已提交
1017
	drv = kzalloc(sizeof(*drv), GFP_KERNEL);
1018
	if (!drv)
1019
		return NULL;
1020

1021
	drv->trans = trans;
1022
	drv->dev = trans->dev;
1023
	drv->cfg = cfg;
1024

J
Johannes Berg 已提交
1025
	init_completion(&drv->request_firmware_complete);
J
Johannes Berg 已提交
1026
	INIT_LIST_HEAD(&drv->list);
1027

1028 1029 1030 1031 1032 1033 1034
#ifdef CONFIG_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");
1035
		ret = -ENOMEM;
1036 1037 1038 1039 1040 1041 1042 1043
		goto err_free_drv;
	}

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

	if (!drv->trans->dbgfs_dir) {
		IWL_ERR(drv, "failed to create transport debugfs directory\n");
1044
		ret = -ENOMEM;
1045 1046 1047 1048
		goto err_free_dbgfs;
	}
#endif

J
Johannes Berg 已提交
1049
	ret = iwl_request_firmware(drv, true);
1050
	if (ret) {
1051
		IWL_ERR(trans, "Couldn't request the fw\n");
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		goto err_fw;
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	}

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	return drv;

err_fw:
#ifdef CONFIG_IWLWIFI_DEBUGFS
err_free_dbgfs:
	debugfs_remove_recursive(drv->dbgfs_drv);
err_free_drv:
#endif
	kfree(drv);

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	return ERR_PTR(ret);
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}

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void iwl_drv_stop(struct iwl_drv *drv)
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{
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	wait_for_completion(&drv->request_firmware_complete);
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	_iwl_op_mode_stop(drv);
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	iwl_dealloc_ucode(drv);
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	mutex_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_empty(&drv->list))
		list_del(&drv->list);
	mutex_unlock(&iwlwifi_opmode_table_mtx);

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#ifdef CONFIG_IWLWIFI_DEBUGFS
	debugfs_remove_recursive(drv->dbgfs_drv);
#endif

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	kfree(drv);
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}
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/* shared module parameters */
struct iwl_mod_params iwlwifi_mod_params = {
	.amsdu_size_8K = 1,
	.restart_fw = 1,
	.plcp_check = true,
	.bt_coex_active = true,
	.power_level = IWL_POWER_INDEX_1,
	.bt_ch_announce = true,
	.auto_agg = true,
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	.wd_disable = true,
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	/* the rest are 0 by default */
};
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EXPORT_SYMBOL_GPL(iwlwifi_mod_params);

int iwl_opmode_register(const char *name, const struct iwl_op_mode_ops *ops)
{
	int i;
	struct iwl_drv *drv;
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	struct iwlwifi_opmode_table *op;
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	mutex_lock(&iwlwifi_opmode_table_mtx);
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	for (i = 0; i < ARRAY_SIZE(iwlwifi_opmode_table); i++) {
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		op = &iwlwifi_opmode_table[i];
		if (strcmp(op->name, name))
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			continue;
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		op->ops = ops;
		/* TODO: need to handle exceptional case */
		list_for_each_entry(drv, &op->drv, list)
			drv->op_mode = _iwl_op_mode_start(drv, op);

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		mutex_unlock(&iwlwifi_opmode_table_mtx);
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		return 0;
	}
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	mutex_unlock(&iwlwifi_opmode_table_mtx);
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	return -EIO;
}
EXPORT_SYMBOL_GPL(iwl_opmode_register);

void iwl_opmode_deregister(const char *name)
{
	int i;
	struct iwl_drv *drv;

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	mutex_lock(&iwlwifi_opmode_table_mtx);
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	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 */
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		list_for_each_entry(drv, &iwlwifi_opmode_table[i].drv, list)
			_iwl_op_mode_stop(drv);

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		mutex_unlock(&iwlwifi_opmode_table_mtx);
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		return;
	}
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	mutex_unlock(&iwlwifi_opmode_table_mtx);
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}
EXPORT_SYMBOL_GPL(iwl_opmode_deregister);

static int __init iwl_drv_init(void)
{
	int i;

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	mutex_init(&iwlwifi_opmode_table_mtx);

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

	pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
	pr_info(DRV_COPYRIGHT "\n");

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#ifdef CONFIG_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

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	return iwl_pci_register_driver();
}
module_init(iwl_drv_init);

static void __exit iwl_drv_exit(void)
{
	iwl_pci_unregister_driver();
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#ifdef CONFIG_IWLWIFI_DEBUGFS
	debugfs_remove_recursive(iwl_dbgfs_root);
#endif
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}
module_exit(iwl_drv_exit);
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#ifdef CONFIG_IWLWIFI_DEBUG
module_param_named(debug, iwlwifi_mod_params.debug_level, uint,
		   S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(debug, "debug output mask");
#endif

module_param_named(swcrypto, iwlwifi_mod_params.sw_crypto, int, S_IRUGO);
MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
module_param_named(11n_disable, iwlwifi_mod_params.disable_11n, uint, S_IRUGO);
MODULE_PARM_DESC(11n_disable,
	"disable 11n functionality, bitmap: 1: full, 2: agg TX, 4: agg RX");
module_param_named(amsdu_size_8K, iwlwifi_mod_params.amsdu_size_8K,
		   int, S_IRUGO);
MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
module_param_named(fw_restart, iwlwifi_mod_params.restart_fw, int, S_IRUGO);
MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");

module_param_named(antenna_coupling, iwlwifi_mod_params.ant_coupling,
		   int, S_IRUGO);
MODULE_PARM_DESC(antenna_coupling,
		 "specify antenna coupling in dB (defualt: 0 dB)");

module_param_named(bt_ch_inhibition, iwlwifi_mod_params.bt_ch_announce,
		   bool, S_IRUGO);
MODULE_PARM_DESC(bt_ch_inhibition,
		 "Enable BT channel inhibition (default: enable)");

module_param_named(plcp_check, iwlwifi_mod_params.plcp_check, bool, S_IRUGO);
MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");

module_param_named(wd_disable, iwlwifi_mod_params.wd_disable, int, S_IRUGO);
MODULE_PARM_DESC(wd_disable,
		"Disable stuck queue watchdog timer 0=system default, "
		"1=disable, 2=enable (default: 0)");

/*
 * 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, S_IRUGO);
MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");

module_param_named(led_mode, iwlwifi_mod_params.led_mode, int, S_IRUGO);
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, S_IRUGO);
MODULE_PARM_DESC(power_save,
		 "enable WiFi power management (default: disable)");

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

module_param_named(auto_agg, iwlwifi_mod_params.auto_agg,
		bool, S_IRUGO);
MODULE_PARM_DESC(auto_agg,
		 "enable agg w/o check traffic load (default: enable)");
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module_param_named(5ghz_disable, iwlwifi_mod_params.disable_5ghz,
		bool, S_IRUGO);
MODULE_PARM_DESC(5ghz_disable, "disable 5GHz band (default: 0 [enabled])");