| /****************************************************************************** |
| * |
| * 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. |
| * |
| * 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 COPYING. |
| * |
| * Contact Information: |
| * Intel Linux Wireless <ilw@linux.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. |
| * 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 "iwl-drv.h" |
| #include "iwl-modparams.h" |
| #include "iwl-nvm-parse.h" |
| |
| /* NVM offsets (in words) definitions */ |
| enum wkp_nvm_offsets { |
| /* NVM HW-Section offset (in words) definitions */ |
| 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 |
| }; |
| |
| /* 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), |
| }; |
| |
| /* radio config bits (actual values from NVM definition) */ |
| #define NVM_RF_CFG_DASH_MSK(x) (x & 0x3) /* bits 0-1 */ |
| #define NVM_RF_CFG_STEP_MSK(x) ((x >> 2) & 0x3) /* bits 2-3 */ |
| #define NVM_RF_CFG_TYPE_MSK(x) ((x >> 4) & 0x3) /* bits 4-5 */ |
| #define NVM_RF_CFG_PNUM_MSK(x) ((x >> 6) & 0x3) /* bits 6-7 */ |
| #define NVM_RF_CFG_TX_ANT_MSK(x) ((x >> 8) & 0xF) /* bits 8-11 */ |
| #define NVM_RF_CFG_RX_ANT_MSK(x) ((x >> 12) & 0xF) /* bits 12-15 */ |
| |
| /* |
| * These are the channel numbers in the order that they are stored in the NVM |
| */ |
| static const u8 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 |
| }; |
| |
| #define IWL_NUM_CHANNELS ARRAY_SIZE(iwl_nvm_channels) |
| #define NUM_2GHZ_CHANNELS 14 |
| #define FIRST_2GHZ_HT_MINUS 5 |
| #define LAST_2GHZ_HT_PLUS 9 |
| #define LAST_5GHZ_HT 161 |
| |
| #define DEFAULT_MAX_TX_POWER 16 |
| |
| /* 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_DFS: dynamic freq selection candidate |
| * @NVM_CHANNEL_WIDE: 20 MHz channel okay (?) |
| * @NVM_CHANNEL_40MHZ: 40 MHz channel okay (?) |
| * @NVM_CHANNEL_80MHZ: 80 MHz channel okay (?) |
| * @NVM_CHANNEL_160MHZ: 160 MHz channel okay (?) |
| */ |
| enum iwl_nvm_channel_flags { |
| NVM_CHANNEL_VALID = BIT(0), |
| NVM_CHANNEL_IBSS = BIT(1), |
| NVM_CHANNEL_ACTIVE = BIT(3), |
| NVM_CHANNEL_RADAR = BIT(4), |
| NVM_CHANNEL_DFS = BIT(7), |
| NVM_CHANNEL_WIDE = BIT(8), |
| NVM_CHANNEL_40MHZ = BIT(9), |
| NVM_CHANNEL_80MHZ = BIT(10), |
| NVM_CHANNEL_160MHZ = BIT(11), |
| }; |
| |
| #define CHECK_AND_PRINT_I(x) \ |
| ((ch_flags & NVM_CHANNEL_##x) ? # x " " : "") |
| |
| static int iwl_init_channel_map(struct device *dev, const struct iwl_cfg *cfg, |
| struct iwl_nvm_data *data, |
| const __le16 * const nvm_ch_flags) |
| { |
| int ch_idx; |
| int n_channels = 0; |
| struct ieee80211_channel *channel; |
| u16 ch_flags; |
| bool is_5ghz; |
| |
| for (ch_idx = 0; ch_idx < IWL_NUM_CHANNELS; ch_idx++) { |
| ch_flags = __le16_to_cpup(nvm_ch_flags + ch_idx); |
| |
| if (ch_idx >= NUM_2GHZ_CHANNELS && |
| !data->sku_cap_band_52GHz_enable) |
| ch_flags &= ~NVM_CHANNEL_VALID; |
| |
| if (!(ch_flags & NVM_CHANNEL_VALID)) { |
| IWL_DEBUG_EEPROM(dev, |
| "Ch. %d Flags %x [%sGHz] - No traffic\n", |
| iwl_nvm_channels[ch_idx], |
| ch_flags, |
| (ch_idx >= NUM_2GHZ_CHANNELS) ? |
| "5.2" : "2.4"); |
| continue; |
| } |
| |
| channel = &data->channels[n_channels]; |
| n_channels++; |
| |
| channel->hw_value = iwl_nvm_channels[ch_idx]; |
| channel->band = (ch_idx < NUM_2GHZ_CHANNELS) ? |
| IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ; |
| channel->center_freq = |
| ieee80211_channel_to_frequency( |
| channel->hw_value, channel->band); |
| |
| /* TODO: Need to be dependent to the NVM */ |
| channel->flags = IEEE80211_CHAN_NO_HT40; |
| if (ch_idx < NUM_2GHZ_CHANNELS && |
| (ch_flags & NVM_CHANNEL_40MHZ)) { |
| if (iwl_nvm_channels[ch_idx] <= LAST_2GHZ_HT_PLUS) |
| channel->flags &= ~IEEE80211_CHAN_NO_HT40PLUS; |
| if (iwl_nvm_channels[ch_idx] >= FIRST_2GHZ_HT_MINUS) |
| channel->flags &= ~IEEE80211_CHAN_NO_HT40MINUS; |
| } else if (iwl_nvm_channels[ch_idx] <= LAST_5GHZ_HT && |
| (ch_flags & NVM_CHANNEL_40MHZ)) { |
| if ((ch_idx - NUM_2GHZ_CHANNELS) % 2 == 0) |
| channel->flags &= ~IEEE80211_CHAN_NO_HT40PLUS; |
| else |
| channel->flags &= ~IEEE80211_CHAN_NO_HT40MINUS; |
| } |
| if (!(ch_flags & NVM_CHANNEL_80MHZ)) |
| channel->flags |= IEEE80211_CHAN_NO_80MHZ; |
| if (!(ch_flags & NVM_CHANNEL_160MHZ)) |
| channel->flags |= IEEE80211_CHAN_NO_160MHZ; |
| |
| if (!(ch_flags & NVM_CHANNEL_IBSS)) |
| channel->flags |= IEEE80211_CHAN_NO_IR; |
| |
| if (!(ch_flags & NVM_CHANNEL_ACTIVE)) |
| channel->flags |= IEEE80211_CHAN_NO_IR; |
| |
| if (ch_flags & NVM_CHANNEL_RADAR) |
| channel->flags |= IEEE80211_CHAN_RADAR; |
| |
| /* Initialize regulatory-based run-time data */ |
| |
| /* |
| * Default value - highest tx power value. max_power |
| * is not used in mvm, and is used for backwards compatibility |
| */ |
| channel->max_power = DEFAULT_MAX_TX_POWER; |
| is_5ghz = channel->band == IEEE80211_BAND_5GHZ; |
| IWL_DEBUG_EEPROM(dev, |
| "Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x %ddBm): Ad-Hoc %ssupported\n", |
| channel->hw_value, |
| is_5ghz ? "5.2" : "2.4", |
| CHECK_AND_PRINT_I(VALID), |
| CHECK_AND_PRINT_I(IBSS), |
| CHECK_AND_PRINT_I(ACTIVE), |
| CHECK_AND_PRINT_I(RADAR), |
| CHECK_AND_PRINT_I(WIDE), |
| CHECK_AND_PRINT_I(DFS), |
| ch_flags, |
| channel->max_power, |
| ((ch_flags & NVM_CHANNEL_IBSS) && |
| !(ch_flags & NVM_CHANNEL_RADAR)) |
| ? "" : "not "); |
| } |
| |
| return n_channels; |
| } |
| |
| static void iwl_init_vht_hw_capab(const struct iwl_cfg *cfg, |
| struct iwl_nvm_data *data, |
| struct ieee80211_sta_vht_cap *vht_cap) |
| { |
| int num_ants = num_of_ant(data->valid_rx_ant); |
| |
| vht_cap->vht_supported = true; |
| |
| vht_cap->cap = IEEE80211_VHT_CAP_SHORT_GI_80 | |
| IEEE80211_VHT_CAP_RXSTBC_1 | |
| IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE | |
| 3 << IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT | |
| 7 << IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; |
| |
| if (num_ants > 1) |
| vht_cap->cap |= IEEE80211_VHT_CAP_TXSTBC; |
| |
| if (iwlwifi_mod_params.amsdu_size_8K) |
| vht_cap->cap |= IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991; |
| |
| vht_cap->vht_mcs.rx_mcs_map = |
| cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 | |
| IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 | |
| IEEE80211_VHT_MCS_NOT_SUPPORTED << 4 | |
| IEEE80211_VHT_MCS_NOT_SUPPORTED << 6 | |
| IEEE80211_VHT_MCS_NOT_SUPPORTED << 8 | |
| IEEE80211_VHT_MCS_NOT_SUPPORTED << 10 | |
| IEEE80211_VHT_MCS_NOT_SUPPORTED << 12 | |
| IEEE80211_VHT_MCS_NOT_SUPPORTED << 14); |
| |
| if (num_ants == 1 || |
| cfg->rx_with_siso_diversity) { |
| vht_cap->cap |= IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN | |
| IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN; |
| /* this works because NOT_SUPPORTED == 3 */ |
| vht_cap->vht_mcs.rx_mcs_map |= |
| cpu_to_le16(IEEE80211_VHT_MCS_NOT_SUPPORTED << 2); |
| } |
| |
| vht_cap->vht_mcs.tx_mcs_map = vht_cap->vht_mcs.rx_mcs_map; |
| } |
| |
| static void iwl_init_sbands(struct device *dev, const struct iwl_cfg *cfg, |
| struct iwl_nvm_data *data, const __le16 *nvm_sw, |
| bool enable_vht, u8 tx_chains, u8 rx_chains) |
| { |
| int n_channels = iwl_init_channel_map(dev, cfg, data, |
| &nvm_sw[NVM_CHANNELS]); |
| int n_used = 0; |
| struct ieee80211_supported_band *sband; |
| |
| sband = &data->bands[IEEE80211_BAND_2GHZ]; |
| sband->band = IEEE80211_BAND_2GHZ; |
| sband->bitrates = &iwl_cfg80211_rates[RATES_24_OFFS]; |
| sband->n_bitrates = N_RATES_24; |
| n_used += iwl_init_sband_channels(data, sband, n_channels, |
| IEEE80211_BAND_2GHZ); |
| iwl_init_ht_hw_capab(cfg, data, &sband->ht_cap, IEEE80211_BAND_2GHZ, |
| tx_chains, rx_chains); |
| |
| sband = &data->bands[IEEE80211_BAND_5GHZ]; |
| sband->band = IEEE80211_BAND_5GHZ; |
| sband->bitrates = &iwl_cfg80211_rates[RATES_52_OFFS]; |
| sband->n_bitrates = N_RATES_52; |
| n_used += iwl_init_sband_channels(data, sband, n_channels, |
| IEEE80211_BAND_5GHZ); |
| iwl_init_ht_hw_capab(cfg, data, &sband->ht_cap, IEEE80211_BAND_5GHZ, |
| tx_chains, rx_chains); |
| if (enable_vht) |
| iwl_init_vht_hw_capab(cfg, data, &sband->vht_cap); |
| |
| if (n_channels != n_used) |
| IWL_ERR_DEV(dev, "NVM: used only %d of %d channels\n", |
| n_used, n_channels); |
| } |
| |
| struct iwl_nvm_data * |
| iwl_parse_nvm_data(struct device *dev, const struct iwl_cfg *cfg, |
| const __le16 *nvm_hw, const __le16 *nvm_sw, |
| const __le16 *nvm_calib, u8 tx_chains, u8 rx_chains) |
| { |
| struct iwl_nvm_data *data; |
| u8 hw_addr[ETH_ALEN]; |
| u16 radio_cfg, sku; |
| |
| data = kzalloc(sizeof(*data) + |
| sizeof(struct ieee80211_channel) * IWL_NUM_CHANNELS, |
| GFP_KERNEL); |
| if (!data) |
| return NULL; |
| |
| data->nvm_version = le16_to_cpup(nvm_sw + NVM_VERSION); |
| |
| radio_cfg = le16_to_cpup(nvm_sw + RADIO_CFG); |
| data->radio_cfg_type = NVM_RF_CFG_TYPE_MSK(radio_cfg); |
| data->radio_cfg_step = NVM_RF_CFG_STEP_MSK(radio_cfg); |
| data->radio_cfg_dash = NVM_RF_CFG_DASH_MSK(radio_cfg); |
| data->radio_cfg_pnum = NVM_RF_CFG_PNUM_MSK(radio_cfg); |
| data->valid_tx_ant = NVM_RF_CFG_TX_ANT_MSK(radio_cfg); |
| data->valid_rx_ant = NVM_RF_CFG_RX_ANT_MSK(radio_cfg); |
| |
| sku = le16_to_cpup(nvm_sw + SKU); |
| data->sku_cap_band_24GHz_enable = sku & NVM_SKU_CAP_BAND_24GHZ; |
| data->sku_cap_band_52GHz_enable = sku & NVM_SKU_CAP_BAND_52GHZ; |
| data->sku_cap_11n_enable = sku & NVM_SKU_CAP_11N_ENABLE; |
| if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_ALL) |
| data->sku_cap_11n_enable = false; |
| |
| /* check overrides (some devices have wrong NVM) */ |
| if (cfg->valid_tx_ant) |
| data->valid_tx_ant = cfg->valid_tx_ant; |
| if (cfg->valid_rx_ant) |
| data->valid_rx_ant = cfg->valid_rx_ant; |
| |
| if (!data->valid_tx_ant || !data->valid_rx_ant) { |
| IWL_ERR_DEV(dev, "invalid antennas (0x%x, 0x%x)\n", |
| data->valid_tx_ant, data->valid_rx_ant); |
| kfree(data); |
| return NULL; |
| } |
| |
| data->n_hw_addrs = le16_to_cpup(nvm_sw + N_HW_ADDRS); |
| |
| data->xtal_calib[0] = *(nvm_calib + XTAL_CALIB); |
| data->xtal_calib[1] = *(nvm_calib + XTAL_CALIB + 1); |
| |
| /* The byte order is little endian 16 bit, meaning 214365 */ |
| memcpy(hw_addr, nvm_hw + HW_ADDR, ETH_ALEN); |
| data->hw_addr[0] = hw_addr[1]; |
| data->hw_addr[1] = hw_addr[0]; |
| data->hw_addr[2] = hw_addr[3]; |
| data->hw_addr[3] = hw_addr[2]; |
| data->hw_addr[4] = hw_addr[5]; |
| data->hw_addr[5] = hw_addr[4]; |
| |
| iwl_init_sbands(dev, cfg, data, nvm_sw, sku & NVM_SKU_CAP_11AC_ENABLE, |
| tx_chains, rx_chains); |
| |
| data->calib_version = 255; /* TODO: |
| this value will prevent some checks from |
| failing, we need to check if this |
| field is still needed, and if it does, |
| where is it in the NVM*/ |
| |
| return data; |
| } |
| IWL_EXPORT_SYMBOL(iwl_parse_nvm_data); |
