bfc824b05b
Some devices don't support VHT (802.11ac) and this is encoded in the data stored in the NVM. Read the flag and use it to set up the VHT capabilities accordingly. Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
395 lines
14 KiB
C
395 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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NVM_SKU_CAP_11AC_ENABLE = BIT(3),
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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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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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bool enable_vht)
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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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if (enable_vht)
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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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sku & NVM_SKU_CAP_11AC_ENABLE);
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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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