forked from Minki/linux
48e29340d5
If all the pieces of iwlwifi are built into the kernel then there's no need for it to export its symbols to other modules, so prevent that. Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
394 lines
14 KiB
C
394 lines
14 KiB
C
/******************************************************************************
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*
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* This file is provided under a dual BSD/GPLv2 license. When using or
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* redistributing this file, you may do so under either license.
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*
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2008 - 2013 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
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* USA
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*
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* The full GNU General Public License is included in this distribution
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* in the file called COPYING.
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*
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* Contact Information:
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* Intel Linux Wireless <ilw@linux.intel.com>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*
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* BSD LICENSE
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*
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* Copyright(c) 2005 - 2013 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*****************************************************************************/
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#include <linux/types.h>
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#include <linux/slab.h>
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#include <linux/export.h>
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#include "iwl-drv.h"
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#include "iwl-modparams.h"
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#include "iwl-nvm-parse.h"
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/* NVM offsets (in words) definitions */
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enum wkp_nvm_offsets {
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/* NVM HW-Section offset (in words) definitions */
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HW_ADDR = 0x15,
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/* NVM SW-Section offset (in words) definitions */
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NVM_SW_SECTION = 0x1C0,
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NVM_VERSION = 0,
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RADIO_CFG = 1,
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SKU = 2,
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N_HW_ADDRS = 3,
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NVM_CHANNELS = 0x1E0 - NVM_SW_SECTION,
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/* NVM calibration section offset (in words) definitions */
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NVM_CALIB_SECTION = 0x2B8,
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XTAL_CALIB = 0x316 - NVM_CALIB_SECTION
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};
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/* SKU Capabilities (actual values from NVM definition) */
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enum nvm_sku_bits {
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NVM_SKU_CAP_BAND_24GHZ = BIT(0),
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NVM_SKU_CAP_BAND_52GHZ = BIT(1),
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NVM_SKU_CAP_11N_ENABLE = BIT(2),
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};
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/* radio config bits (actual values from NVM definition) */
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#define NVM_RF_CFG_DASH_MSK(x) (x & 0x3) /* bits 0-1 */
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#define NVM_RF_CFG_STEP_MSK(x) ((x >> 2) & 0x3) /* bits 2-3 */
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#define NVM_RF_CFG_TYPE_MSK(x) ((x >> 4) & 0x3) /* bits 4-5 */
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#define NVM_RF_CFG_PNUM_MSK(x) ((x >> 6) & 0x3) /* bits 6-7 */
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#define NVM_RF_CFG_TX_ANT_MSK(x) ((x >> 8) & 0xF) /* bits 8-11 */
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#define NVM_RF_CFG_RX_ANT_MSK(x) ((x >> 12) & 0xF) /* bits 12-15 */
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/*
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* These are the channel numbers in the order that they are stored in the NVM
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*/
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static const u8 iwl_nvm_channels[] = {
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/* 2.4 GHz */
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1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
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/* 5 GHz */
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36, 40, 44 , 48, 52, 56, 60, 64,
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100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 144,
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149, 153, 157, 161, 165
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};
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#define IWL_NUM_CHANNELS ARRAY_SIZE(iwl_nvm_channels)
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#define NUM_2GHZ_CHANNELS 14
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#define FIRST_2GHZ_HT_MINUS 5
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#define LAST_2GHZ_HT_PLUS 9
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#define LAST_5GHZ_HT 161
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/* rate data (static) */
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static struct ieee80211_rate iwl_cfg80211_rates[] = {
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{ .bitrate = 1 * 10, .hw_value = 0, .hw_value_short = 0, },
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{ .bitrate = 2 * 10, .hw_value = 1, .hw_value_short = 1,
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.flags = IEEE80211_RATE_SHORT_PREAMBLE, },
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{ .bitrate = 5.5 * 10, .hw_value = 2, .hw_value_short = 2,
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.flags = IEEE80211_RATE_SHORT_PREAMBLE, },
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{ .bitrate = 11 * 10, .hw_value = 3, .hw_value_short = 3,
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.flags = IEEE80211_RATE_SHORT_PREAMBLE, },
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{ .bitrate = 6 * 10, .hw_value = 4, .hw_value_short = 4, },
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{ .bitrate = 9 * 10, .hw_value = 5, .hw_value_short = 5, },
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{ .bitrate = 12 * 10, .hw_value = 6, .hw_value_short = 6, },
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{ .bitrate = 18 * 10, .hw_value = 7, .hw_value_short = 7, },
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{ .bitrate = 24 * 10, .hw_value = 8, .hw_value_short = 8, },
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{ .bitrate = 36 * 10, .hw_value = 9, .hw_value_short = 9, },
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{ .bitrate = 48 * 10, .hw_value = 10, .hw_value_short = 10, },
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{ .bitrate = 54 * 10, .hw_value = 11, .hw_value_short = 11, },
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};
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#define RATES_24_OFFS 0
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#define N_RATES_24 ARRAY_SIZE(iwl_cfg80211_rates)
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#define RATES_52_OFFS 4
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#define N_RATES_52 (N_RATES_24 - RATES_52_OFFS)
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/**
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* enum iwl_nvm_channel_flags - channel flags in NVM
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* @NVM_CHANNEL_VALID: channel is usable for this SKU/geo
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* @NVM_CHANNEL_IBSS: usable as an IBSS channel
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* @NVM_CHANNEL_ACTIVE: active scanning allowed
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* @NVM_CHANNEL_RADAR: radar detection required
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* @NVM_CHANNEL_DFS: dynamic freq selection candidate
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* @NVM_CHANNEL_WIDE: 20 MHz channel okay (?)
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* @NVM_CHANNEL_40MHZ: 40 MHz channel okay (?)
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* @NVM_CHANNEL_80MHZ: 80 MHz channel okay (?)
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* @NVM_CHANNEL_160MHZ: 160 MHz channel okay (?)
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*/
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enum iwl_nvm_channel_flags {
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NVM_CHANNEL_VALID = BIT(0),
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NVM_CHANNEL_IBSS = BIT(1),
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NVM_CHANNEL_ACTIVE = BIT(3),
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NVM_CHANNEL_RADAR = BIT(4),
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NVM_CHANNEL_DFS = BIT(7),
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NVM_CHANNEL_WIDE = BIT(8),
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NVM_CHANNEL_40MHZ = BIT(9),
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NVM_CHANNEL_80MHZ = BIT(10),
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NVM_CHANNEL_160MHZ = BIT(11),
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};
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#define CHECK_AND_PRINT_I(x) \
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((ch_flags & NVM_CHANNEL_##x) ? # x " " : "")
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static int iwl_init_channel_map(struct device *dev, const struct iwl_cfg *cfg,
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struct iwl_nvm_data *data,
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const __le16 * const nvm_ch_flags)
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{
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int ch_idx;
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int n_channels = 0;
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struct ieee80211_channel *channel;
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u16 ch_flags;
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bool is_5ghz;
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for (ch_idx = 0; ch_idx < IWL_NUM_CHANNELS; ch_idx++) {
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ch_flags = __le16_to_cpup(nvm_ch_flags + ch_idx);
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if (!(ch_flags & NVM_CHANNEL_VALID)) {
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IWL_DEBUG_EEPROM(dev,
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"Ch. %d Flags %x [%sGHz] - No traffic\n",
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iwl_nvm_channels[ch_idx],
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ch_flags,
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(ch_idx >= NUM_2GHZ_CHANNELS) ?
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"5.2" : "2.4");
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continue;
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}
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channel = &data->channels[n_channels];
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n_channels++;
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channel->hw_value = iwl_nvm_channels[ch_idx];
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channel->band = (ch_idx < NUM_2GHZ_CHANNELS) ?
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IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ;
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channel->center_freq =
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ieee80211_channel_to_frequency(
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channel->hw_value, channel->band);
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/* TODO: Need to be dependent to the NVM */
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channel->flags = IEEE80211_CHAN_NO_HT40;
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if (ch_idx < NUM_2GHZ_CHANNELS &&
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(ch_flags & NVM_CHANNEL_40MHZ)) {
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if (iwl_nvm_channels[ch_idx] <= LAST_2GHZ_HT_PLUS)
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channel->flags &= ~IEEE80211_CHAN_NO_HT40PLUS;
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if (iwl_nvm_channels[ch_idx] >= FIRST_2GHZ_HT_MINUS)
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channel->flags &= ~IEEE80211_CHAN_NO_HT40MINUS;
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} else if (iwl_nvm_channels[ch_idx] <= LAST_5GHZ_HT &&
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(ch_flags & NVM_CHANNEL_40MHZ)) {
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if ((ch_idx - NUM_2GHZ_CHANNELS) % 2 == 0)
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channel->flags &= ~IEEE80211_CHAN_NO_HT40PLUS;
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else
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channel->flags &= ~IEEE80211_CHAN_NO_HT40MINUS;
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}
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if (!(ch_flags & NVM_CHANNEL_80MHZ))
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channel->flags |= IEEE80211_CHAN_NO_80MHZ;
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if (!(ch_flags & NVM_CHANNEL_160MHZ))
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channel->flags |= IEEE80211_CHAN_NO_160MHZ;
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if (!(ch_flags & NVM_CHANNEL_IBSS))
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channel->flags |= IEEE80211_CHAN_NO_IBSS;
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if (!(ch_flags & NVM_CHANNEL_ACTIVE))
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channel->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
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if (ch_flags & NVM_CHANNEL_RADAR)
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channel->flags |= IEEE80211_CHAN_RADAR;
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/* Initialize regulatory-based run-time data */
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/* TODO: read the real value from the NVM */
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channel->max_power = 0;
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is_5ghz = channel->band == IEEE80211_BAND_5GHZ;
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IWL_DEBUG_EEPROM(dev,
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"Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x %ddBm): Ad-Hoc %ssupported\n",
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channel->hw_value,
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is_5ghz ? "5.2" : "2.4",
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CHECK_AND_PRINT_I(VALID),
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CHECK_AND_PRINT_I(IBSS),
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CHECK_AND_PRINT_I(ACTIVE),
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CHECK_AND_PRINT_I(RADAR),
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CHECK_AND_PRINT_I(WIDE),
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CHECK_AND_PRINT_I(DFS),
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ch_flags,
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channel->max_power,
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((ch_flags & NVM_CHANNEL_IBSS) &&
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!(ch_flags & NVM_CHANNEL_RADAR))
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? "" : "not ");
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}
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return n_channels;
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}
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static void iwl_init_vht_hw_capab(const struct iwl_cfg *cfg,
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struct iwl_nvm_data *data,
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struct ieee80211_sta_vht_cap *vht_cap)
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{
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/* For now, assume new devices with NVM are VHT capable */
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vht_cap->vht_supported = true;
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vht_cap->cap = IEEE80211_VHT_CAP_SHORT_GI_80 |
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IEEE80211_VHT_CAP_RXSTBC_1 |
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IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
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7 << IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT;
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if (iwlwifi_mod_params.amsdu_size_8K)
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vht_cap->cap |= IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991;
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vht_cap->vht_mcs.rx_mcs_map =
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cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
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IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
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IEEE80211_VHT_MCS_NOT_SUPPORTED << 4 |
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IEEE80211_VHT_MCS_NOT_SUPPORTED << 6 |
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IEEE80211_VHT_MCS_NOT_SUPPORTED << 8 |
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IEEE80211_VHT_MCS_NOT_SUPPORTED << 10 |
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IEEE80211_VHT_MCS_NOT_SUPPORTED << 12 |
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IEEE80211_VHT_MCS_NOT_SUPPORTED << 14);
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if (data->valid_rx_ant == 1 || cfg->rx_with_siso_diversity) {
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vht_cap->cap |= IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN |
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IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN;
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/* this works because NOT_SUPPORTED == 3 */
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vht_cap->vht_mcs.rx_mcs_map |=
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cpu_to_le16(IEEE80211_VHT_MCS_NOT_SUPPORTED << 2);
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}
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vht_cap->vht_mcs.tx_mcs_map = vht_cap->vht_mcs.rx_mcs_map;
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}
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static void iwl_init_sbands(struct device *dev, const struct iwl_cfg *cfg,
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struct iwl_nvm_data *data, const __le16 *nvm_sw)
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{
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int n_channels = iwl_init_channel_map(dev, cfg, data,
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&nvm_sw[NVM_CHANNELS]);
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int n_used = 0;
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struct ieee80211_supported_band *sband;
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sband = &data->bands[IEEE80211_BAND_2GHZ];
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sband->band = IEEE80211_BAND_2GHZ;
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sband->bitrates = &iwl_cfg80211_rates[RATES_24_OFFS];
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sband->n_bitrates = N_RATES_24;
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n_used += iwl_init_sband_channels(data, sband, n_channels,
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IEEE80211_BAND_2GHZ);
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iwl_init_ht_hw_capab(cfg, data, &sband->ht_cap, IEEE80211_BAND_2GHZ);
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sband = &data->bands[IEEE80211_BAND_5GHZ];
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sband->band = IEEE80211_BAND_5GHZ;
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sband->bitrates = &iwl_cfg80211_rates[RATES_52_OFFS];
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sband->n_bitrates = N_RATES_52;
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n_used += iwl_init_sband_channels(data, sband, n_channels,
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IEEE80211_BAND_5GHZ);
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iwl_init_ht_hw_capab(cfg, data, &sband->ht_cap, IEEE80211_BAND_5GHZ);
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iwl_init_vht_hw_capab(cfg, data, &sband->vht_cap);
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if (n_channels != n_used)
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IWL_ERR_DEV(dev, "NVM: used only %d of %d channels\n",
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n_used, n_channels);
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}
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struct iwl_nvm_data *
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iwl_parse_nvm_data(struct device *dev, const struct iwl_cfg *cfg,
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const __le16 *nvm_hw, const __le16 *nvm_sw,
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const __le16 *nvm_calib)
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{
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struct iwl_nvm_data *data;
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u8 hw_addr[ETH_ALEN];
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u16 radio_cfg, sku;
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data = kzalloc(sizeof(*data) +
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sizeof(struct ieee80211_channel) * IWL_NUM_CHANNELS,
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GFP_KERNEL);
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if (!data)
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return NULL;
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data->nvm_version = le16_to_cpup(nvm_sw + NVM_VERSION);
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radio_cfg = le16_to_cpup(nvm_sw + RADIO_CFG);
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data->radio_cfg_type = NVM_RF_CFG_TYPE_MSK(radio_cfg);
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data->radio_cfg_step = NVM_RF_CFG_STEP_MSK(radio_cfg);
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data->radio_cfg_dash = NVM_RF_CFG_DASH_MSK(radio_cfg);
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data->radio_cfg_pnum = NVM_RF_CFG_PNUM_MSK(radio_cfg);
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data->valid_tx_ant = NVM_RF_CFG_TX_ANT_MSK(radio_cfg);
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data->valid_rx_ant = NVM_RF_CFG_RX_ANT_MSK(radio_cfg);
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sku = le16_to_cpup(nvm_sw + SKU);
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data->sku_cap_band_24GHz_enable = sku & NVM_SKU_CAP_BAND_24GHZ;
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data->sku_cap_band_52GHz_enable = sku & NVM_SKU_CAP_BAND_52GHZ;
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data->sku_cap_11n_enable = sku & NVM_SKU_CAP_11N_ENABLE;
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if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_ALL)
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data->sku_cap_11n_enable = false;
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/* check overrides (some devices have wrong NVM) */
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if (cfg->valid_tx_ant)
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data->valid_tx_ant = cfg->valid_tx_ant;
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if (cfg->valid_rx_ant)
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data->valid_rx_ant = cfg->valid_rx_ant;
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if (!data->valid_tx_ant || !data->valid_rx_ant) {
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IWL_ERR_DEV(dev, "invalid antennas (0x%x, 0x%x)\n",
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data->valid_tx_ant, data->valid_rx_ant);
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kfree(data);
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return NULL;
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}
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data->n_hw_addrs = le16_to_cpup(nvm_sw + N_HW_ADDRS);
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data->xtal_calib[0] = *(nvm_calib + XTAL_CALIB);
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data->xtal_calib[1] = *(nvm_calib + XTAL_CALIB + 1);
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/* The byte order is little endian 16 bit, meaning 214365 */
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memcpy(hw_addr, nvm_hw + HW_ADDR, ETH_ALEN);
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data->hw_addr[0] = hw_addr[1];
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data->hw_addr[1] = hw_addr[0];
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data->hw_addr[2] = hw_addr[3];
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data->hw_addr[3] = hw_addr[2];
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data->hw_addr[4] = hw_addr[5];
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data->hw_addr[5] = hw_addr[4];
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iwl_init_sbands(dev, cfg, data, nvm_sw);
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data->calib_version = 255; /* TODO:
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this value will prevent some checks from
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failing, we need to check if this
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field is still needed, and if it does,
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where is it in the NVM*/
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return data;
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}
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IWL_EXPORT_SYMBOL(iwl_parse_nvm_data);
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