path: root/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c

/******************************************************************************
 *
 * This file is provided under a dual BSD/GPLv2 license.  When using or
 * redistributing this file, you may do so under either license.
 *
 * GPL LICENSE SUMMARY
 *
 * Copyright(c) 2008 - 2014 Intel Corporation. All rights reserved.
 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
 * Copyright(c) 2018 - 2019 Intel Corporation
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * The full GNU General Public License is included in this distribution
 * in the file called COPYING.
 *
 * Contact Information:
 *  Intel Linux Wireless <linuxwifi@intel.com>
 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
 * BSD LICENSE
 *
 * Copyright(c) 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 - 2019 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 <linux/types.h>
#include <linux/slab.h>
#include <linux/export.h>
#include <linux/etherdevice.h>
#include <linux/pci.h>
#include <linux/firmware.h>

#include "iwl-drv.h"
#include "iwl-modparams.h"
#include "iwl-nvm-parse.h"
#include "iwl-prph.h"
#include "iwl-io.h"
#include "iwl-csr.h"
#include "fw/acpi.h"
#include "fw/api/nvm-reg.h"
#include "fw/api/commands.h"
#include "fw/api/cmdhdr.h"
#include "fw/img.h"

/* NVM offsets (in words) definitions */
enum nvm_offsets {
	/* NVM HW-Section offset (in words) definitions */
	SUBSYSTEM_ID = 0x0A,
	HW_ADDR = 0x15,

	/* NVM SW-Section offset (in words) definitions */
	NVM_SW_SECTION = 0x1C0,
	NVM_VERSION = 0,
	RADIO_CFG = 1,
	SKU = 2,
	N_HW_ADDRS = 3,
	NVM_CHANNELS = 0x1E0 - NVM_SW_SECTION,

	/* NVM calibration section offset (in words) definitions */
	NVM_CALIB_SECTION = 0x2B8,
	XTAL_CALIB = 0x316 - NVM_CALIB_SECTION,

	/* NVM REGULATORY -Section offset (in words) definitions */
	NVM_CHANNELS_SDP = 0,
};

enum ext_nvm_offsets {
	/* NVM HW-Section offset (in words) definitions */
	MAC_ADDRESS_OVERRIDE_EXT_NVM = 1,

	/* NVM SW-Section offset (in words) definitions */
	NVM_VERSION_EXT_NVM = 0,
	RADIO_CFG_FAMILY_EXT_NVM = 0,
	SKU_FAMILY_8000 = 2,
	N_HW_ADDRS_FAMILY_8000 = 3,

	/* NVM REGULATORY -Section offset (in words) definitions */
	NVM_CHANNELS_EXTENDED = 0,
	NVM_LAR_OFFSET_OLD = 0x4C7,
	NVM_LAR_OFFSET = 0x507,
	NVM_LAR_ENABLED = 0x7,
};

/* SKU Capabilities (actual values from NVM definition) */
enum nvm_sku_bits {
	NVM_SKU_CAP_BAND_24GHZ		= BIT(0),
	NVM_SKU_CAP_BAND_52GHZ		= BIT(1),
	NVM_SKU_CAP_11N_ENABLE		= BIT(2),
	NVM_SKU_CAP_11AC_ENABLE		= BIT(3),
	NVM_SKU_CAP_MIMO_DISABLE	= BIT(5),
};

/*
 * These are the channel numbers in the order that they are stored in the NVM
 */
static const u16 iwl_nvm_channels[] = {
	/* 2.4 GHz */
	1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
	/* 5 GHz */
	36, 40, 44 , 48, 52, 56, 60, 64,
	100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 144,
	149, 153, 157, 161, 165
};

static const u16 iwl_ext_nvm_channels[] = {
	/* 2.4 GHz */
	1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
	/* 5 GHz */
	36, 40, 44, 48, 52, 56, 60, 64, 68, 72, 76, 80, 84, 88, 92,
	96, 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 144,
	149, 153, 157, 161, 165, 169, 173, 177, 181
};

static const u16 iwl_uhb_nvm_channels[] = {
	/* 2.4 GHz */
	1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
	/* 5 GHz */
	36, 40, 44, 48, 52, 56, 60, 64, 68, 72, 76, 80, 84, 88, 92,
	96, 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 144,
	149, 153, 157, 161, 165, 169, 173, 177, 181,
	/* 6-7 GHz */
	1, 5, 9, 13, 17, 21, 25, 29, 33, 37, 41, 45, 49, 53, 57, 61, 65, 69,
	73, 77, 81, 85, 89, 93, 97, 101, 105, 109, 113, 117, 121, 125, 129,
	133, 137, 141, 145, 149, 153, 157, 161, 165, 169, 173, 177, 181, 185,
	189, 193, 197, 201, 205, 209, 213, 217, 221, 225, 229, 233
};

#define IWL_NVM_NUM_CHANNELS		ARRAY_SIZE(iwl_nvm_channels)
#define IWL_NVM_NUM_CHANNELS_EXT	ARRAY_SIZE(iwl_ext_nvm_channels)
#define IWL_NVM_NUM_CHANNELS_UHB	ARRAY_SIZE(iwl_uhb_nvm_channels)
#define NUM_2GHZ_CHANNELS		14
#define FIRST_2GHZ_HT_MINUS		5
#define LAST_2GHZ_HT_PLUS		9
#define N_HW_ADDR_MASK			0xF

/* rate data (static) */
static struct ieee80211_rate iwl_cfg80211_rates[] = {
	{ .bitrate = 1 * 10, .hw_value = 0, .hw_value_short = 0, },
	{ .bitrate = 2 * 10, .hw_value = 1, .hw_value_short = 1,
	  .flags = IEEE80211_RATE_SHORT_PREAMBLE, },
	{ .bitrate = 5.5 * 10, .hw_value = 2, .hw_value_short = 2,
	  .flags = IEEE80211_RATE_SHORT_PREAMBLE, },
	{ .bitrate = 11 * 10, .hw_value = 3, .hw_value_short = 3,
	  .flags = IEEE80211_RATE_SHORT_PREAMBLE, },
	{ .bitrate = 6 * 10, .hw_value = 4, .hw_value_short = 4, },
	{ .bitrate = 9 * 10, .hw_value = 5, .hw_value_short = 5, },
	{ .bitrate = 12 * 10, .hw_value = 6, .hw_value_short = 6, },
	{ .bitrate = 18 * 10, .hw_value = 7, .hw_value_short = 7, },
	{ .bitrate = 24 * 10, .hw_value = 8, .hw_value_short = 8, },
	{ .bitrate = 36 * 10, .hw_value = 9, .hw_value_short = 9, },
	{ .bitrate = 48 * 10, .hw_value = 10, .hw_value_short = 10, },
	{ .bitrate = 54 * 10, .hw_value = 11, .hw_value_short = 11, },
};
#define RATES_24_OFFS	0
#define N_RATES_24	ARRAY_SIZE(iwl_cfg80211_rates)
#define RATES_52_OFFS	4
#define N_RATES_52	(N_RATES_24 - RATES_52_OFFS)

/**
 * enum iwl_nvm_channel_flags - channel flags in NVM
 * @NVM_CHANNEL_VALID: channel is usable for this SKU/geo
 * @NVM_CHANNEL_IBSS: usable as an IBSS channel
 * @NVM_CHANNEL_ACTIVE: active scanning allowed
 * @NVM_CHANNEL_RADAR: radar detection required
 * @NVM_CHANNEL_INDOOR_ONLY: only indoor use is allowe