| /****************************************************************************** |
| * |
| * 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 - 2012 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 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 |
| * |
| * Copyright(c) 2005 - 2012 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-modparams.h" |
| #include "iwl-eeprom-parse.h" |
| |
| /* EEPROM offset definitions */ |
| |
| /* indirect access definitions */ |
| #define ADDRESS_MSK 0x0000FFFF |
| #define INDIRECT_TYPE_MSK 0x000F0000 |
| #define INDIRECT_HOST 0x00010000 |
| #define INDIRECT_GENERAL 0x00020000 |
| #define INDIRECT_REGULATORY 0x00030000 |
| #define INDIRECT_CALIBRATION 0x00040000 |
| #define INDIRECT_PROCESS_ADJST 0x00050000 |
| #define INDIRECT_OTHERS 0x00060000 |
| #define INDIRECT_TXP_LIMIT 0x00070000 |
| #define INDIRECT_TXP_LIMIT_SIZE 0x00080000 |
| #define INDIRECT_ADDRESS 0x00100000 |
| |
| /* corresponding link offsets in EEPROM */ |
| #define EEPROM_LINK_HOST (2*0x64) |
| #define EEPROM_LINK_GENERAL (2*0x65) |
| #define EEPROM_LINK_REGULATORY (2*0x66) |
| #define EEPROM_LINK_CALIBRATION (2*0x67) |
| #define EEPROM_LINK_PROCESS_ADJST (2*0x68) |
| #define EEPROM_LINK_OTHERS (2*0x69) |
| #define EEPROM_LINK_TXP_LIMIT (2*0x6a) |
| #define EEPROM_LINK_TXP_LIMIT_SIZE (2*0x6b) |
| |
| /* General */ |
| #define EEPROM_DEVICE_ID (2*0x08) /* 2 bytes */ |
| #define EEPROM_SUBSYSTEM_ID (2*0x0A) /* 2 bytes */ |
| #define EEPROM_MAC_ADDRESS (2*0x15) /* 6 bytes */ |
| #define EEPROM_BOARD_REVISION (2*0x35) /* 2 bytes */ |
| #define EEPROM_BOARD_PBA_NUMBER (2*0x3B+1) /* 9 bytes */ |
| #define EEPROM_VERSION (2*0x44) /* 2 bytes */ |
| #define EEPROM_SKU_CAP (2*0x45) /* 2 bytes */ |
| #define EEPROM_OEM_MODE (2*0x46) /* 2 bytes */ |
| #define EEPROM_RADIO_CONFIG (2*0x48) /* 2 bytes */ |
| #define EEPROM_NUM_MAC_ADDRESS (2*0x4C) /* 2 bytes */ |
| |
| /* calibration */ |
| struct iwl_eeprom_calib_hdr { |
| u8 version; |
| u8 pa_type; |
| __le16 voltage; |
| } __packed; |
| |
| #define EEPROM_CALIB_ALL (INDIRECT_ADDRESS | INDIRECT_CALIBRATION) |
| #define EEPROM_XTAL ((2*0x128) | EEPROM_CALIB_ALL) |
| |
| /* temperature */ |
| #define EEPROM_KELVIN_TEMPERATURE ((2*0x12A) | EEPROM_CALIB_ALL) |
| #define EEPROM_RAW_TEMPERATURE ((2*0x12B) | EEPROM_CALIB_ALL) |
| |
| /* |
| * EEPROM bands |
| * These are the channel numbers from each band in the order |
| * that they are stored in the EEPROM band information. Note |
| * that EEPROM bands aren't the same as mac80211 bands, and |
| * there are even special "ht40 bands" in the EEPROM. |
| */ |
| static const u8 iwl_eeprom_band_1[14] = { /* 2.4 GHz */ |
| 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 |
| }; |
| |
| static const u8 iwl_eeprom_band_2[] = { /* 4915-5080MHz */ |
| 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16 |
| }; |
| |
| static const u8 iwl_eeprom_band_3[] = { /* 5170-5320MHz */ |
| 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64 |
| }; |
| |
| static const u8 iwl_eeprom_band_4[] = { /* 5500-5700MHz */ |
| 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140 |
| }; |
| |
| static const u8 iwl_eeprom_band_5[] = { /* 5725-5825MHz */ |
| 145, 149, 153, 157, 161, 165 |
| }; |
| |
| static const u8 iwl_eeprom_band_6[] = { /* 2.4 ht40 channel */ |
| 1, 2, 3, 4, 5, 6, 7 |
| }; |
| |
| static const u8 iwl_eeprom_band_7[] = { /* 5.2 ht40 channel */ |
| 36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157 |
| }; |
| |
| #define IWL_NUM_CHANNELS (ARRAY_SIZE(iwl_eeprom_band_1) + \ |
| ARRAY_SIZE(iwl_eeprom_band_2) + \ |
| ARRAY_SIZE(iwl_eeprom_band_3) + \ |
| ARRAY_SIZE(iwl_eeprom_band_4) + \ |
| ARRAY_SIZE(iwl_eeprom_band_5)) |
| |
| /* 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) |
| |
| /* EEPROM reading functions */ |
| |
| static u16 iwl_eeprom_query16(const u8 *eeprom, size_t eeprom_size, int offset) |
| { |
| if (WARN_ON(offset + sizeof(u16) > eeprom_size)) |
| return 0; |
| return le16_to_cpup((__le16 *)(eeprom + offset)); |
| } |
| |
| static u32 eeprom_indirect_address(const u8 *eeprom, size_t eeprom_size, |
| u32 address) |
| { |
| u16 offset = 0; |
| |
| if ((address & INDIRECT_ADDRESS) == 0) |
| return address; |
| |
| switch (address & INDIRECT_TYPE_MSK) { |
| case INDIRECT_HOST: |
| offset = iwl_eeprom_query16(eeprom, eeprom_size, |
| EEPROM_LINK_HOST); |
| break; |
| case INDIRECT_GENERAL: |
| offset = iwl_eeprom_query16(eeprom, eeprom_size, |
| EEPROM_LINK_GENERAL); |
| break; |
| case INDIRECT_REGULATORY: |
| offset = iwl_eeprom_query16(eeprom, eeprom_size, |
| EEPROM_LINK_REGULATORY); |
| break; |
| case INDIRECT_TXP_LIMIT: |
| offset = iwl_eeprom_query16(eeprom, eeprom_size, |
| EEPROM_LINK_TXP_LIMIT); |
| break; |
| case INDIRECT_TXP_LIMIT_SIZE: |
| offset = iwl_eeprom_query16(eeprom, eeprom_size, |
| EEPROM_LINK_TXP_LIMIT_SIZE); |
| break; |
| case INDIRECT_CALIBRATION: |
| offset = iwl_eeprom_query16(eeprom, eeprom_size, |
| EEPROM_LINK_CALIBRATION); |
| break; |
| case INDIRECT_PROCESS_ADJST: |
| offset = iwl_eeprom_query16(eeprom, eeprom_size, |
| EEPROM_LINK_PROCESS_ADJST); |
| break; |
| case INDIRECT_OTHERS: |
| offset = iwl_eeprom_query16(eeprom, eeprom_size, |
| EEPROM_LINK_OTHERS); |
| break; |
| default: |
| WARN_ON(1); |
| break; |
| } |
| |
| /* translate the offset from words to byte */ |
| return (address & ADDRESS_MSK) + (offset << 1); |
| } |
| |
| static const u8 *iwl_eeprom_query_addr(const u8 *eeprom, size_t eeprom_size, |
| u32 offset) |
| { |
| u32 address = eeprom_indirect_address(eeprom, eeprom_size, offset); |
| |
| if (WARN_ON(address >= eeprom_size)) |
| return NULL; |
| |
| return &eeprom[address]; |
| } |
| |
| static int iwl_eeprom_read_calib(const u8 *eeprom, size_t eeprom_size, |
| struct iwl_eeprom_data *data) |
| { |
| struct iwl_eeprom_calib_hdr *hdr; |
| |
| hdr = (void *)iwl_eeprom_query_addr(eeprom, eeprom_size, |
| EEPROM_CALIB_ALL); |
| if (!hdr) |
| return -ENODATA; |
| data->calib_version = hdr->version; |
| data->calib_voltage = hdr->voltage; |
| |
| return 0; |
| } |
| |
| /** |
| * enum iwl_eeprom_channel_flags - channel flags in EEPROM |
| * @EEPROM_CHANNEL_VALID: channel is usable for this SKU/geo |
| * @EEPROM_CHANNEL_IBSS: usable as an IBSS channel |
| * @EEPROM_CHANNEL_ACTIVE: active scanning allowed |
| * @EEPROM_CHANNEL_RADAR: radar detection required |
| * @EEPROM_CHANNEL_WIDE: 20 MHz channel okay (?) |
| * @EEPROM_CHANNEL_DFS: dynamic freq selection candidate |
| */ |
| enum iwl_eeprom_channel_flags { |
| EEPROM_CHANNEL_VALID = BIT(0), |
| EEPROM_CHANNEL_IBSS = BIT(1), |
| EEPROM_CHANNEL_ACTIVE = BIT(3), |
| EEPROM_CHANNEL_RADAR = BIT(4), |
| EEPROM_CHANNEL_WIDE = BIT(5), |
| EEPROM_CHANNEL_DFS = BIT(7), |
| }; |
| |
| /** |
| * struct iwl_eeprom_channel - EEPROM channel data |
| * @flags: %EEPROM_CHANNEL_* flags |
| * @max_power_avg: max power (in dBm) on this channel, at most 31 dBm |
| */ |
| struct iwl_eeprom_channel { |
| u8 flags; |
| s8 max_power_avg; |
| } __packed; |
| |
| |
| enum iwl_eeprom_enhanced_txpwr_flags { |
| IWL_EEPROM_ENH_TXP_FL_VALID = BIT(0), |
| IWL_EEPROM_ENH_TXP_FL_BAND_52G = BIT(1), |
| IWL_EEPROM_ENH_TXP_FL_OFDM = BIT(2), |
| IWL_EEPROM_ENH_TXP_FL_40MHZ = BIT(3), |
| IWL_EEPROM_ENH_TXP_FL_HT_AP = BIT(4), |
| IWL_EEPROM_ENH_TXP_FL_RES1 = BIT(5), |
| IWL_EEPROM_ENH_TXP_FL_RES2 = BIT(6), |
| IWL_EEPROM_ENH_TXP_FL_COMMON_TYPE = BIT(7), |
| }; |
| |
| /** |
| * iwl_eeprom_enhanced_txpwr structure |
| * @flags: entry flags |
| * @channel: channel number |
| * @chain_a_max_pwr: chain a max power in 1/2 dBm |
| * @chain_b_max_pwr: chain b max power in 1/2 dBm |
| * @chain_c_max_pwr: chain c max power in 1/2 dBm |
| * @delta_20_in_40: 20-in-40 deltas (hi/lo) |
| * @mimo2_max_pwr: mimo2 max power in 1/2 dBm |
| * @mimo3_max_pwr: mimo3 max power in 1/2 dBm |
| * |
| * This structure presents the enhanced regulatory tx power limit layout |
| * in an EEPROM image. |
| */ |
| struct iwl_eeprom_enhanced_txpwr { |
| u8 flags; |
| u8 channel; |
| s8 chain_a_max; |
| s8 chain_b_max; |
| s8 chain_c_max; |
| u8 delta_20_in_40; |
| s8 mimo2_max; |
| s8 mimo3_max; |
| } __packed; |
| |
| static s8 iwl_get_max_txpwr_half_dbm(const struct iwl_eeprom_data *data, |
| struct iwl_eeprom_enhanced_txpwr *txp) |
| { |
| s8 result = 0; /* (.5 dBm) */ |
| |
| /* Take the highest tx power from any valid chains */ |
| if (data->valid_tx_ant & ANT_A && txp->chain_a_max > result) |
| result = txp->chain_a_max; |
| |
| if (data->valid_tx_ant & ANT_B && txp->chain_b_max > result) |
| result = txp->chain_b_max; |
| |
| if (data->valid_tx_ant & ANT_C && txp->chain_c_max > result) |
| result = txp->chain_c_max; |
| |
| if ((data->valid_tx_ant == ANT_AB || |
| data->valid_tx_ant == ANT_BC || |
| data->valid_tx_ant == ANT_AC) && txp->mimo2_max > result) |
| result = txp->mimo2_max; |
| |
| if (data->valid_tx_ant == ANT_ABC && txp->mimo3_max > result) |
| result = txp->mimo3_max; |
| |
| return result; |
| } |
| |
| #define EEPROM_TXP_OFFS (0x00 | INDIRECT_ADDRESS | INDIRECT_TXP_LIMIT) |
| #define EEPROM_TXP_ENTRY_LEN sizeof(struct iwl_eeprom_enhanced_txpwr) |
| #define EEPROM_TXP_SZ_OFFS (0x00 | INDIRECT_ADDRESS | INDIRECT_TXP_LIMIT_SIZE) |
| |
| #define TXP_CHECK_AND_PRINT(x) \ |
| ((txp->flags & IWL_EEPROM_ENH_TXP_FL_##x) ? # x " " : "") |
| |
| static void |
| iwl_eeprom_enh_txp_read_element(struct iwl_eeprom_data *data, |
| struct iwl_eeprom_enhanced_txpwr *txp, |
| int n_channels, s8 max_txpower_avg) |
| { |
| int ch_idx; |
| enum ieee80211_band band; |
| |
| band = txp->flags & IWL_EEPROM_ENH_TXP_FL_BAND_52G ? |
| IEEE80211_BAND_5GHZ : IEEE80211_BAND_2GHZ; |
| |
| for (ch_idx = 0; ch_idx < n_channels; ch_idx++) { |
| struct ieee80211_channel *chan = &data->channels[ch_idx]; |
| |
| /* update matching channel or from common data only */ |
| if (txp->channel != 0 && chan->hw_value != txp->channel) |
| continue; |
| |
| /* update matching band only */ |
| if (band != chan->band) |
| continue; |
| |
| if (chan->max_power < max_txpower_avg && |
| !(txp->flags & IWL_EEPROM_ENH_TXP_FL_40MHZ)) |
| chan->max_power = max_txpower_avg; |
| } |
| } |
| |
| static void iwl_eeprom_enhanced_txpower(struct device *dev, |
| struct iwl_eeprom_data *data, |
| const u8 *eeprom, size_t eeprom_size, |
| int n_channels) |
| { |
| struct iwl_eeprom_enhanced_txpwr *txp_array, *txp; |
| int idx, entries; |
| __le16 *txp_len; |
| s8 max_txp_avg_halfdbm; |
| |
| BUILD_BUG_ON(sizeof(struct iwl_eeprom_enhanced_txpwr) != 8); |
| |
| /* the length is in 16-bit words, but we want entries */ |
| txp_len = (__le16 *)iwl_eeprom_query_addr(eeprom, eeprom_size, |
| EEPROM_TXP_SZ_OFFS); |
| entries = le16_to_cpup(txp_len) * 2 / EEPROM_TXP_ENTRY_LEN; |
| |
| txp_array = (void *)iwl_eeprom_query_addr(eeprom, eeprom_size, |
| EEPROM_TXP_OFFS); |
| |
| for (idx = 0; idx < entries; idx++) { |
| txp = &txp_array[idx]; |
| /* skip invalid entries */ |
| if (!(txp->flags & IWL_EEPROM_ENH_TXP_FL_VALID)) |
| continue; |
| |
| IWL_DEBUG_EEPROM(dev, "%s %d:\t %s%s%s%s%s%s%s%s (0x%02x)\n", |
| (txp->channel && (txp->flags & |
| IWL_EEPROM_ENH_TXP_FL_COMMON_TYPE)) ? |
| "Common " : (txp->channel) ? |
| "Channel" : "Common", |
| (txp->channel), |
| TXP_CHECK_AND_PRINT(VALID), |
| TXP_CHECK_AND_PRINT(BAND_52G), |
| TXP_CHECK_AND_PRINT(OFDM), |
| TXP_CHECK_AND_PRINT(40MHZ), |
| TXP_CHECK_AND_PRINT(HT_AP), |
| TXP_CHECK_AND_PRINT(RES1), |
| TXP_CHECK_AND_PRINT(RES2), |
| TXP_CHECK_AND_PRINT(COMMON_TYPE), |
| txp->flags); |
| IWL_DEBUG_EEPROM(dev, |
| "\t\t chain_A: 0x%02x chain_B: 0X%02x chain_C: 0X%02x\n", |
| txp->chain_a_max, txp->chain_b_max, |
| txp->chain_c_max); |
| IWL_DEBUG_EEPROM(dev, |
| "\t\t MIMO2: 0x%02x MIMO3: 0x%02x High 20_on_40: 0x%02x Low 20_on_40: 0x%02x\n", |
| txp->mimo2_max, txp->mimo3_max, |
| ((txp->delta_20_in_40 & 0xf0) >> 4), |
| (txp->delta_20_in_40 & 0x0f)); |
| |
| max_txp_avg_halfdbm = iwl_get_max_txpwr_half_dbm(data, txp); |
| |
| iwl_eeprom_enh_txp_read_element(data, txp, n_channels, |
| DIV_ROUND_UP(max_txp_avg_halfdbm, 2)); |
| |
| if (max_txp_avg_halfdbm > data->max_tx_pwr_half_dbm) |
| data->max_tx_pwr_half_dbm = max_txp_avg_halfdbm; |
| } |
| } |
| |
| static void iwl_init_band_reference(const struct iwl_cfg *cfg, |
| const u8 *eeprom, size_t eeprom_size, |
| int eeprom_band, int *eeprom_ch_count, |
| const struct iwl_eeprom_channel **ch_info, |
| const u8 **eeprom_ch_array) |
| { |
| u32 offset = cfg->eeprom_params->regulatory_bands[eeprom_band - 1]; |
| |
| offset |= INDIRECT_ADDRESS | INDIRECT_REGULATORY; |
| |
| *ch_info = (void *)iwl_eeprom_query_addr(eeprom, eeprom_size, offset); |
| |
| switch (eeprom_band) { |
| case 1: /* 2.4GHz band */ |
| *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_1); |
| *eeprom_ch_array = iwl_eeprom_band_1; |
| break; |
| case 2: /* 4.9GHz band */ |
| *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_2); |
| *eeprom_ch_array = iwl_eeprom_band_2; |
| break; |
| case 3: /* 5.2GHz band */ |
| *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_3); |
| *eeprom_ch_array = iwl_eeprom_band_3; |
| break; |
| case 4: /* 5.5GHz band */ |
| *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_4); |
| *eeprom_ch_array = iwl_eeprom_band_4; |
| break; |
| case 5: /* 5.7GHz band */ |
| *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_5); |
| *eeprom_ch_array = iwl_eeprom_band_5; |
| break; |
| case 6: /* 2.4GHz ht40 channels */ |
| *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_6); |
| *eeprom_ch_array = iwl_eeprom_band_6; |
| break; |
| case 7: /* 5 GHz ht40 channels */ |
| *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_7); |
| *eeprom_ch_array = iwl_eeprom_band_7; |
| break; |
| default: |
| *eeprom_ch_count = 0; |
| *eeprom_ch_array = NULL; |
| WARN_ON(1); |
| } |
| } |
| |
| #define CHECK_AND_PRINT(x) \ |
| ((eeprom_ch->flags & EEPROM_CHANNEL_##x) ? # x " " : "") |
| |
| static void iwl_mod_ht40_chan_info(struct device *dev, |
| struct iwl_eeprom_data *data, int n_channels, |
| enum ieee80211_band band, u16 channel, |
| const struct iwl_eeprom_channel *eeprom_ch, |
| u8 clear_ht40_extension_channel) |
| { |
| struct ieee80211_channel *chan = NULL; |
| int i; |
| |
| for (i = 0; i < n_channels; i++) { |
| if (data->channels[i].band != band) |
| continue; |
| if (data->channels[i].hw_value != channel) |
| continue; |
| chan = &data->channels[i]; |
| break; |
| } |
| |
| if (!chan) |
| return; |
| |
| IWL_DEBUG_EEPROM(dev, |
| "HT40 Ch. %d [%sGHz] %s%s%s%s%s(0x%02x %ddBm): Ad-Hoc %ssupported\n", |
| channel, |
| band == IEEE80211_BAND_5GHZ ? "5.2" : "2.4", |
| CHECK_AND_PRINT(IBSS), |
| CHECK_AND_PRINT(ACTIVE), |
| CHECK_AND_PRINT(RADAR), |
| CHECK_AND_PRINT(WIDE), |
| CHECK_AND_PRINT(DFS), |
| eeprom_ch->flags, |
| eeprom_ch->max_power_avg, |
| ((eeprom_ch->flags & EEPROM_CHANNEL_IBSS) && |
| !(eeprom_ch->flags & EEPROM_CHANNEL_RADAR)) ? "" |
| : "not "); |
| |
| if (eeprom_ch->flags & EEPROM_CHANNEL_VALID) |
| chan->flags &= ~clear_ht40_extension_channel; |
| } |
| |
| #define CHECK_AND_PRINT_I(x) \ |
| ((eeprom_ch_info[ch_idx].flags & EEPROM_CHANNEL_##x) ? # x " " : "") |
| |
| static int iwl_init_channel_map(struct device *dev, const struct iwl_cfg *cfg, |
| struct iwl_eeprom_data *data, |
| const u8 *eeprom, size_t eeprom_size) |
| { |
| int band, ch_idx; |
| const struct iwl_eeprom_channel *eeprom_ch_info; |
| const u8 *eeprom_ch_array; |
| int eeprom_ch_count; |
| int n_channels = 0; |
| |
| /* |
| * Loop through the 5 EEPROM bands and add them to the parse list |
| */ |
| for (band = 1; band <= 5; band++) { |
| struct ieee80211_channel *channel; |
| |
| iwl_init_band_reference(cfg, eeprom, eeprom_size, band, |
| &eeprom_ch_count, &eeprom_ch_info, |
| &eeprom_ch_array); |
| |
| /* Loop through each band adding each of the channels */ |
| for (ch_idx = 0; ch_idx < eeprom_ch_count; ch_idx++) { |
| const struct iwl_eeprom_channel *eeprom_ch; |
| |
| eeprom_ch = &eeprom_ch_info[ch_idx]; |
| |
| if (!(eeprom_ch->flags & EEPROM_CHANNEL_VALID)) { |
| IWL_DEBUG_EEPROM(dev, |
| "Ch. %d Flags %x [%sGHz] - No traffic\n", |
| eeprom_ch_array[ch_idx], |
| eeprom_ch_info[ch_idx].flags, |
| (band != 1) ? "5.2" : "2.4"); |
| continue; |
| } |
| |
| channel = &data->channels[n_channels]; |
| n_channels++; |
| |
| channel->hw_value = eeprom_ch_array[ch_idx]; |
| channel->band = (band == 1) ? IEEE80211_BAND_2GHZ |
| : IEEE80211_BAND_5GHZ; |
| channel->center_freq = |
| ieee80211_channel_to_frequency( |
| channel->hw_value, channel->band); |
| |
| /* set no-HT40, will enable as appropriate later */ |
| channel->flags = IEEE80211_CHAN_NO_HT40; |
| |
| if (!(eeprom_ch->flags & EEPROM_CHANNEL_IBSS)) |
| channel->flags |= IEEE80211_CHAN_NO_IBSS; |
| |
| if (!(eeprom_ch->flags & EEPROM_CHANNEL_ACTIVE)) |
| channel->flags |= IEEE80211_CHAN_PASSIVE_SCAN; |
| |
| if (eeprom_ch->flags & EEPROM_CHANNEL_RADAR) |
| channel->flags |= IEEE80211_CHAN_RADAR; |
| |
| /* Initialize regulatory-based run-time data */ |
| channel->max_power = |
| eeprom_ch_info[ch_idx].max_power_avg; |
| IWL_DEBUG_EEPROM(dev, |
| "Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x %ddBm): Ad-Hoc %ssupported\n", |
| channel->hw_value, |
| (band != 1) ? "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), |
| eeprom_ch_info[ch_idx].flags, |
| eeprom_ch_info[ch_idx].max_power_avg, |
| ((eeprom_ch_info[ch_idx].flags & |
| EEPROM_CHANNEL_IBSS) && |
| !(eeprom_ch_info[ch_idx].flags & |
| EEPROM_CHANNEL_RADAR)) |
| ? "" : "not "); |
| } |
| } |
| |
| if (cfg->eeprom_params->enhanced_txpower) { |
| /* |
| * for newer device (6000 series and up) |
| * EEPROM contain enhanced tx power information |
| * driver need to process addition information |
| * to determine the max channel tx power limits |
| */ |
| iwl_eeprom_enhanced_txpower(dev, data, eeprom, eeprom_size, |
| n_channels); |
| } else { |
| /* All others use data from channel map */ |
| int i; |
| |
| data->max_tx_pwr_half_dbm = -128; |
| |
| for (i = 0; i < n_channels; i++) |
| data->max_tx_pwr_half_dbm = |
| max_t(s8, data->max_tx_pwr_half_dbm, |
| data->channels[i].max_power * 2); |
| } |
| |
| /* Check if we do have HT40 channels */ |
| if (cfg->eeprom_params->regulatory_bands[5] == |
| EEPROM_REGULATORY_BAND_NO_HT40 && |
| cfg->eeprom_params->regulatory_bands[6] == |
| EEPROM_REGULATORY_BAND_NO_HT40) |
| return n_channels; |
| |
| /* Two additional EEPROM bands for 2.4 and 5 GHz HT40 channels */ |
| for (band = 6; band <= 7; band++) { |
| enum ieee80211_band ieeeband; |
| |
| iwl_init_band_reference(cfg, eeprom, eeprom_size, band, |
| &eeprom_ch_count, &eeprom_ch_info, |
| &eeprom_ch_array); |
| |
| /* EEPROM band 6 is 2.4, band 7 is 5 GHz */ |
| ieeeband = (band == 6) ? IEEE80211_BAND_2GHZ |
| : IEEE80211_BAND_5GHZ; |
| |
| /* Loop through each band adding each of the channels */ |
| for (ch_idx = 0; ch_idx < eeprom_ch_count; ch_idx++) { |
| /* Set up driver's info for lower half */ |
| iwl_mod_ht40_chan_info(dev, data, n_channels, ieeeband, |
| eeprom_ch_array[ch_idx], |
| &eeprom_ch_info[ch_idx], |
| IEEE80211_CHAN_NO_HT40PLUS); |
| |
| /* Set up driver's info for upper half */ |
| iwl_mod_ht40_chan_info(dev, data, n_channels, ieeeband, |
| eeprom_ch_array[ch_idx] + 4, |
| &eeprom_ch_info[ch_idx], |
| IEEE80211_CHAN_NO_HT40MINUS); |
| } |
| } |
| |
| return n_channels; |
| } |
| |
| static int iwl_init_sband_channels(struct iwl_eeprom_data *data, |
| struct ieee80211_supported_band *sband, |
| int n_channels, enum ieee80211_band band) |
| { |
| struct ieee80211_channel *chan = &data->channels[0]; |
| int n = 0, idx = 0; |
| |
| while (chan->band != band && idx < n_channels) |
| chan = &data->channels[++idx]; |
| |
| sband->channels = &data->channels[idx]; |
| |
| while (chan->band == band && idx < n_channels) { |
| chan = &data->channels[++idx]; |
| n++; |
| } |
| |
| sband->n_channels = n; |
| |
| return n; |
| } |
| |
| #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */ |
| #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */ |
| |
| static void iwl_init_ht_hw_capab(const struct iwl_cfg *cfg, |
| struct iwl_eeprom_data *data, |
| struct ieee80211_sta_ht_cap *ht_info, |
| enum ieee80211_band band) |
| { |
| int max_bit_rate = 0; |
| u8 rx_chains; |
| u8 tx_chains; |
| |
| tx_chains = hweight8(data->valid_tx_ant); |
| if (cfg->rx_with_siso_diversity) |
| rx_chains = 1; |
| else |
| rx_chains = hweight8(data->valid_rx_ant); |
| |
| if (!(data->sku & EEPROM_SKU_CAP_11N_ENABLE) || !cfg->ht_params) { |
| ht_info->ht_supported = false; |
| return; |
| } |
| |
| ht_info->ht_supported = true; |
| ht_info->cap = 0; |
| |
| if (iwlwifi_mod_params.amsdu_size_8K) |
| ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU; |
| |
| ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K; |
| ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_4; |
| |
| ht_info->mcs.rx_mask[0] = 0xFF; |
| if (rx_chains >= 2) |
| ht_info->mcs.rx_mask[1] = 0xFF; |
| if (rx_chains >= 3) |
| ht_info->mcs.rx_mask[2] = 0xFF; |
| |
| if (cfg->ht_params->ht_greenfield_support) |
| ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD; |
| ht_info->cap |= IEEE80211_HT_CAP_SGI_20; |
| |
| max_bit_rate = MAX_BIT_RATE_20_MHZ; |
| |
| if (cfg->ht_params->ht40_bands & BIT(band)) { |
| ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40; |
| ht_info->cap |= IEEE80211_HT_CAP_SGI_40; |
| ht_info->mcs.rx_mask[4] = 0x01; |
| max_bit_rate = MAX_BIT_RATE_40_MHZ; |
| } |
| |
| /* Highest supported Rx data rate */ |
| max_bit_rate *= rx_chains; |
| WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK); |
| ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate); |
| |
| /* Tx MCS capabilities */ |
| ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED; |
| if (tx_chains != rx_chains) { |
| ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF; |
| ht_info->mcs.tx_params |= ((tx_chains - 1) << |
| IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT); |
| } |
| } |
| |
| static void iwl_init_sbands(struct device *dev, const struct iwl_cfg *cfg, |
| struct iwl_eeprom_data *data, |
| const u8 *eeprom, size_t eeprom_size) |
| { |
| int n_channels = iwl_init_channel_map(dev, cfg, data, |
| eeprom, eeprom_size); |
| 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); |
| |
| 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); |
| |
| if (n_channels != n_used) |
| IWL_ERR_DEV(dev, "EEPROM: used only %d of %d channels\n", |
| n_used, n_channels); |
| } |
| |
| /* EEPROM data functions */ |
| |
| struct iwl_eeprom_data * |
| iwl_parse_eeprom_data(struct device *dev, const struct iwl_cfg *cfg, |
| const u8 *eeprom, size_t eeprom_size) |
| { |
| struct iwl_eeprom_data *data; |
| const void *tmp; |
| |
| if (WARN_ON(!cfg || !cfg->eeprom_params)) |
| return NULL; |
| |
| data = kzalloc(sizeof(*data) + |
| sizeof(struct ieee80211_channel) * IWL_NUM_CHANNELS, |
| GFP_KERNEL); |
| if (!data) |
| return NULL; |
| |
| /* get MAC address(es) */ |
| tmp = iwl_eeprom_query_addr(eeprom, eeprom_size, EEPROM_MAC_ADDRESS); |
| if (!tmp) |
| goto err_free; |
| memcpy(data->hw_addr, tmp, ETH_ALEN); |
| data->n_hw_addrs = iwl_eeprom_query16(eeprom, eeprom_size, |
| EEPROM_NUM_MAC_ADDRESS); |
| |
| if (iwl_eeprom_read_calib(eeprom, eeprom_size, data)) |
| goto err_free; |
| |
| tmp = iwl_eeprom_query_addr(eeprom, eeprom_size, EEPROM_XTAL); |
| if (!tmp) |
| goto err_free; |
| memcpy(data->xtal_calib, tmp, sizeof(data->xtal_calib)); |
| |
| tmp = iwl_eeprom_query_addr(eeprom, eeprom_size, |
| EEPROM_RAW_TEMPERATURE); |
| if (!tmp) |
| goto err_free; |
| data->raw_temperature = *(__le16 *)tmp; |
| |
| tmp = iwl_eeprom_query_addr(eeprom, eeprom_size, |
| EEPROM_KELVIN_TEMPERATURE); |
| if (!tmp) |
| goto err_free; |
| data->kelvin_temperature = *(__le16 *)tmp; |
| data->kelvin_voltage = *((__le16 *)tmp + 1); |
| |
| data->radio_cfg = iwl_eeprom_query16(eeprom, eeprom_size, |
| EEPROM_RADIO_CONFIG); |
| data->sku = iwl_eeprom_query16(eeprom, eeprom_size, |
| EEPROM_SKU_CAP); |
| data->eeprom_version = iwl_eeprom_query16(eeprom, eeprom_size, |
| EEPROM_VERSION); |
| |
| data->valid_tx_ant = EEPROM_RF_CFG_TX_ANT_MSK(data->radio_cfg); |
| data->valid_rx_ant = EEPROM_RF_CFG_RX_ANT_MSK(data->radio_cfg); |
| |
| /* check overrides (some devices have wrong EEPROM) */ |
| 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); |
| goto err_free; |
| } |
| |
| iwl_init_sbands(dev, cfg, data, eeprom, eeprom_size); |
| |
| return data; |
| err_free: |
| kfree(data); |
| return NULL; |
| } |
| EXPORT_SYMBOL_GPL(iwl_parse_eeprom_data); |
| |
| /* helper functions */ |
| int iwl_eeprom_check_version(struct iwl_eeprom_data *data, |
| struct iwl_trans *trans) |
| { |
| if (data->eeprom_version >= trans->cfg->eeprom_ver || |
| data->calib_version >= trans->cfg->eeprom_calib_ver) { |
| IWL_INFO(trans, "device EEPROM VER=0x%x, CALIB=0x%x\n", |
| data->eeprom_version, data->calib_version); |
| return 0; |
| } |
| |
| IWL_ERR(trans, |
| "Unsupported (too old) EEPROM VER=0x%x < 0x%x CALIB=0x%x < 0x%x\n", |
| data->eeprom_version, trans->cfg->eeprom_ver, |
| data->calib_version, trans->cfg->eeprom_calib_ver); |
| return -EINVAL; |
| } |
| EXPORT_SYMBOL_GPL(iwl_eeprom_check_version); |