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linux_dsm_epyc7002/drivers/net/wireless/iwlwifi/iwl-eeprom-parse.c
Emmanuel Grumbach 5f0d98f278 iwlwifi: mvm: forbid MIMO on devices that don't support it 
There are devices that forbid MIMO by the mean of the NVM.
Detect thoses devices and forbid MIMO otherwise the firmware
would crash. STBC is still allowed on these devices.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2015-05-10 11:44:42 +03:00

948 lines
30 KiB
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/******************************************************************************
*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2008 - 2014 Intel Corporation. All rights reserved.
* Copyright(c) 2015 Intel Mobile Communications GmbH
*
* 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.
* Copyright(c) 2015 Intel Mobile Communications GmbH
* 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-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)
/* SKU Capabilities (actual values from EEPROM definition) */
enum eeprom_sku_bits {
EEPROM_SKU_CAP_BAND_24GHZ = BIT(4),
EEPROM_SKU_CAP_BAND_52GHZ = BIT(5),
EEPROM_SKU_CAP_11N_ENABLE = BIT(6),
EEPROM_SKU_CAP_AMT_ENABLE = BIT(7),
EEPROM_SKU_CAP_IPAN_ENABLE = BIT(8)
};
/* radio config bits (actual values from EEPROM definition) */
#define EEPROM_RF_CFG_TYPE_MSK(x) (x & 0x3) /* bits 0-1 */
#define EEPROM_RF_CFG_STEP_MSK(x) ((x >> 2) & 0x3) /* bits 2-3 */
#define EEPROM_RF_CFG_DASH_MSK(x) ((x >> 4) & 0x3) /* bits 4-5 */
#define EEPROM_RF_CFG_PNUM_MSK(x) ((x >> 6) & 0x3) /* bits 6-7 */
#define EEPROM_RF_CFG_TX_ANT_MSK(x) ((x >> 8) & 0xF) /* bits 8-11 */
#define EEPROM_RF_CFG_RX_ANT_MSK(x) ((x >> 12) & 0xF) /* bits 12-15 */
/*
* 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_nvm_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_nvm_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_nvm_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_nvm_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_nvm_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_nvm_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_IR;
if (!(eeprom_ch->flags & EEPROM_CHANNEL_ACTIVE))
channel->flags |= IEEE80211_CHAN_NO_IR;
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;
}
int iwl_init_sband_channels(struct iwl_nvm_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 */
void iwl_init_ht_hw_capab(const struct iwl_cfg *cfg,
struct iwl_nvm_data *data,
struct ieee80211_sta_ht_cap *ht_info,
enum ieee80211_band band,
u8 tx_chains, u8 rx_chains)
{
int max_bit_rate = 0;
tx_chains = hweight8(tx_chains);
if (cfg->rx_with_siso_diversity)
rx_chains = 1;
else
rx_chains = hweight8(rx_chains);
if (!(data->sku_cap_11n_enable) || !cfg->ht_params) {
ht_info->ht_supported = false;
return;
}
if (data->sku_cap_mimo_disabled)
rx_chains = 1;
ht_info->ht_supported = true;
ht_info->cap = IEEE80211_HT_CAP_DSSSCCK40;
if (cfg->ht_params->stbc) {
ht_info->cap |= (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
if (tx_chains > 1)
ht_info->cap |= IEEE80211_HT_CAP_TX_STBC;
}
if (cfg->ht_params->ldpc)
ht_info->cap |= IEEE80211_HT_CAP_LDPC_CODING;
if (iwlwifi_mod_params.amsdu_size_8K)
ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
ht_info->ampdu_factor = cfg->max_ht_ampdu_exponent;
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;
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_nvm_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,
data->valid_tx_ant, data->valid_rx_ant);
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,
data->valid_tx_ant, data->valid_rx_ant);
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_nvm_data *
iwl_parse_eeprom_data(struct device *dev, const struct iwl_cfg *cfg,
const u8 *eeprom, size_t eeprom_size)
{
struct iwl_nvm_data *data;
const void *tmp;
u16 radio_cfg, sku;
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);
radio_cfg = iwl_eeprom_query16(eeprom, eeprom_size,
EEPROM_RADIO_CONFIG);
data->radio_cfg_dash = EEPROM_RF_CFG_DASH_MSK(radio_cfg);
data->radio_cfg_pnum = EEPROM_RF_CFG_PNUM_MSK(radio_cfg);
data->radio_cfg_step = EEPROM_RF_CFG_STEP_MSK(radio_cfg);
data->radio_cfg_type = EEPROM_RF_CFG_TYPE_MSK(radio_cfg);
data->valid_rx_ant = EEPROM_RF_CFG_RX_ANT_MSK(radio_cfg);
data->valid_tx_ant = EEPROM_RF_CFG_TX_ANT_MSK(radio_cfg);
sku = iwl_eeprom_query16(eeprom, eeprom_size,
EEPROM_SKU_CAP);
data->sku_cap_11n_enable = sku & EEPROM_SKU_CAP_11N_ENABLE;
data->sku_cap_amt_enable = sku & EEPROM_SKU_CAP_AMT_ENABLE;
data->sku_cap_band_24GHz_enable = sku & EEPROM_SKU_CAP_BAND_24GHZ;
data->sku_cap_band_52GHz_enable = sku & EEPROM_SKU_CAP_BAND_52GHZ;
data->sku_cap_ipan_enable = sku & EEPROM_SKU_CAP_IPAN_ENABLE;
if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_ALL)
data->sku_cap_11n_enable = false;
data->nvm_version = iwl_eeprom_query16(eeprom, eeprom_size,
EEPROM_VERSION);
/* 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;
}
IWL_EXPORT_SYMBOL(iwl_parse_eeprom_data);
/* helper functions */
int iwl_nvm_check_version(struct iwl_nvm_data *data,
struct iwl_trans *trans)
{
if (data->nvm_version >= trans->cfg->nvm_ver ||
data->calib_version >= trans->cfg->nvm_calib_ver) {
IWL_DEBUG_INFO(trans, "device EEPROM VER=0x%x, CALIB=0x%x\n",
data->nvm_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->nvm_version, trans->cfg->nvm_ver,
data->calib_version, trans->cfg->nvm_calib_ver);
return -EINVAL;
}
IWL_EXPORT_SYMBOL(iwl_nvm_check_version);
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