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![Wey-Yi Guy](/assets/img/avatar_default.png)
Add function to get hw version in both strind and u32 format Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
1610 lines
44 KiB
C
1610 lines
44 KiB
C
/******************************************************************************
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*
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2008 - 2011 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 LICENSE.GPL.
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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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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/etherdevice.h>
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#include <linux/sched.h>
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#include <linux/slab.h>
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#include <net/mac80211.h>
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#include "iwl-eeprom.h"
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#include "iwl-debug.h"
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#include "iwl-core.h"
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#include "iwl-io.h"
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#include "iwl-power.h"
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#include "iwl-agn.h"
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#include "iwl-shared.h"
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#include "iwl-agn.h"
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#include "iwl-trans.h"
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const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
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#define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
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#define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
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static void iwl_init_ht_hw_capab(const struct iwl_priv *priv,
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struct ieee80211_sta_ht_cap *ht_info,
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enum ieee80211_band band)
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{
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u16 max_bit_rate = 0;
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u8 rx_chains_num = hw_params(priv).rx_chains_num;
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u8 tx_chains_num = hw_params(priv).tx_chains_num;
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ht_info->cap = 0;
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memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
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ht_info->ht_supported = true;
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if (cfg(priv)->ht_params &&
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cfg(priv)->ht_params->ht_greenfield_support)
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ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
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ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
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max_bit_rate = MAX_BIT_RATE_20_MHZ;
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if (hw_params(priv).ht40_channel & BIT(band)) {
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ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
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ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
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ht_info->mcs.rx_mask[4] = 0x01;
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max_bit_rate = MAX_BIT_RATE_40_MHZ;
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}
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if (iwlagn_mod_params.amsdu_size_8K)
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ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
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ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
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ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
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ht_info->mcs.rx_mask[0] = 0xFF;
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if (rx_chains_num >= 2)
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ht_info->mcs.rx_mask[1] = 0xFF;
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if (rx_chains_num >= 3)
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ht_info->mcs.rx_mask[2] = 0xFF;
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/* Highest supported Rx data rate */
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max_bit_rate *= rx_chains_num;
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WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
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ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
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/* Tx MCS capabilities */
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ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
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if (tx_chains_num != rx_chains_num) {
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ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
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ht_info->mcs.tx_params |= ((tx_chains_num - 1) <<
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IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
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}
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}
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/**
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* iwl_init_geos - Initialize mac80211's geo/channel info based from eeprom
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*/
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int iwl_init_geos(struct iwl_priv *priv)
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{
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struct iwl_channel_info *ch;
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struct ieee80211_supported_band *sband;
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struct ieee80211_channel *channels;
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struct ieee80211_channel *geo_ch;
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struct ieee80211_rate *rates;
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int i = 0;
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s8 max_tx_power = IWLAGN_TX_POWER_TARGET_POWER_MIN;
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if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
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priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
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IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n");
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set_bit(STATUS_GEO_CONFIGURED, &priv->shrd->status);
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return 0;
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}
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channels = kcalloc(priv->channel_count,
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sizeof(struct ieee80211_channel), GFP_KERNEL);
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if (!channels)
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return -ENOMEM;
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rates = kcalloc(IWL_RATE_COUNT_LEGACY, sizeof(struct ieee80211_rate),
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GFP_KERNEL);
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if (!rates) {
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kfree(channels);
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return -ENOMEM;
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}
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/* 5.2GHz channels start after the 2.4GHz channels */
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sband = &priv->bands[IEEE80211_BAND_5GHZ];
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sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
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/* just OFDM */
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sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
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sband->n_bitrates = IWL_RATE_COUNT_LEGACY - IWL_FIRST_OFDM_RATE;
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if (cfg(priv)->sku & EEPROM_SKU_CAP_11N_ENABLE)
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iwl_init_ht_hw_capab(priv, &sband->ht_cap,
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IEEE80211_BAND_5GHZ);
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sband = &priv->bands[IEEE80211_BAND_2GHZ];
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sband->channels = channels;
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/* OFDM & CCK */
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sband->bitrates = rates;
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sband->n_bitrates = IWL_RATE_COUNT_LEGACY;
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if (cfg(priv)->sku & EEPROM_SKU_CAP_11N_ENABLE)
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iwl_init_ht_hw_capab(priv, &sband->ht_cap,
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IEEE80211_BAND_2GHZ);
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priv->ieee_channels = channels;
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priv->ieee_rates = rates;
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for (i = 0; i < priv->channel_count; i++) {
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ch = &priv->channel_info[i];
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/* FIXME: might be removed if scan is OK */
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if (!is_channel_valid(ch))
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continue;
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sband = &priv->bands[ch->band];
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geo_ch = &sband->channels[sband->n_channels++];
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geo_ch->center_freq =
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ieee80211_channel_to_frequency(ch->channel, ch->band);
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geo_ch->max_power = ch->max_power_avg;
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geo_ch->max_antenna_gain = 0xff;
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geo_ch->hw_value = ch->channel;
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if (is_channel_valid(ch)) {
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if (!(ch->flags & EEPROM_CHANNEL_IBSS))
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geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
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if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
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geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
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if (ch->flags & EEPROM_CHANNEL_RADAR)
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geo_ch->flags |= IEEE80211_CHAN_RADAR;
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geo_ch->flags |= ch->ht40_extension_channel;
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if (ch->max_power_avg > max_tx_power)
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max_tx_power = ch->max_power_avg;
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} else {
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geo_ch->flags |= IEEE80211_CHAN_DISABLED;
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}
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IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
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ch->channel, geo_ch->center_freq,
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is_channel_a_band(ch) ? "5.2" : "2.4",
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geo_ch->flags & IEEE80211_CHAN_DISABLED ?
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"restricted" : "valid",
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geo_ch->flags);
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}
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priv->tx_power_device_lmt = max_tx_power;
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priv->tx_power_user_lmt = max_tx_power;
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priv->tx_power_next = max_tx_power;
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if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
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cfg(priv)->sku & EEPROM_SKU_CAP_BAND_52GHZ) {
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char buf[32];
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bus_get_hw_id_string(bus(priv), buf, sizeof(buf));
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IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
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"Please send your %s to maintainer.\n", buf);
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cfg(priv)->sku &= ~EEPROM_SKU_CAP_BAND_52GHZ;
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}
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IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
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priv->bands[IEEE80211_BAND_2GHZ].n_channels,
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priv->bands[IEEE80211_BAND_5GHZ].n_channels);
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set_bit(STATUS_GEO_CONFIGURED, &priv->shrd->status);
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return 0;
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}
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/*
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* iwl_free_geos - undo allocations in iwl_init_geos
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*/
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void iwl_free_geos(struct iwl_priv *priv)
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{
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kfree(priv->ieee_channels);
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kfree(priv->ieee_rates);
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clear_bit(STATUS_GEO_CONFIGURED, &priv->shrd->status);
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}
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static bool iwl_is_channel_extension(struct iwl_priv *priv,
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enum ieee80211_band band,
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u16 channel, u8 extension_chan_offset)
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{
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const struct iwl_channel_info *ch_info;
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ch_info = iwl_get_channel_info(priv, band, channel);
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if (!is_channel_valid(ch_info))
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return false;
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if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
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return !(ch_info->ht40_extension_channel &
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IEEE80211_CHAN_NO_HT40PLUS);
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else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)
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return !(ch_info->ht40_extension_channel &
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IEEE80211_CHAN_NO_HT40MINUS);
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return false;
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}
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bool iwl_is_ht40_tx_allowed(struct iwl_priv *priv,
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struct iwl_rxon_context *ctx,
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struct ieee80211_sta_ht_cap *ht_cap)
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{
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if (!ctx->ht.enabled || !ctx->ht.is_40mhz)
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return false;
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/*
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* We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40
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* the bit will not set if it is pure 40MHz case
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*/
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if (ht_cap && !ht_cap->ht_supported)
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return false;
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#ifdef CONFIG_IWLWIFI_DEBUGFS
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if (priv->disable_ht40)
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return false;
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#endif
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return iwl_is_channel_extension(priv, priv->band,
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le16_to_cpu(ctx->staging.channel),
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ctx->ht.extension_chan_offset);
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}
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static u16 iwl_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val)
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{
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u16 new_val;
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u16 beacon_factor;
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/*
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* If mac80211 hasn't given us a beacon interval, program
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* the default into the device (not checking this here
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* would cause the adjustment below to return the maximum
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* value, which may break PAN.)
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*/
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if (!beacon_val)
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return DEFAULT_BEACON_INTERVAL;
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/*
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* If the beacon interval we obtained from the peer
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* is too large, we'll have to wake up more often
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* (and in IBSS case, we'll beacon too much)
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*
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* For example, if max_beacon_val is 4096, and the
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* requested beacon interval is 7000, we'll have to
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* use 3500 to be able to wake up on the beacons.
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*
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* This could badly influence beacon detection stats.
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*/
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beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val;
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new_val = beacon_val / beacon_factor;
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if (!new_val)
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new_val = max_beacon_val;
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return new_val;
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}
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int iwl_send_rxon_timing(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
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{
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u64 tsf;
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s32 interval_tm, rem;
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struct ieee80211_conf *conf = NULL;
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u16 beacon_int;
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struct ieee80211_vif *vif = ctx->vif;
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conf = &priv->hw->conf;
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lockdep_assert_held(&priv->shrd->mutex);
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memset(&ctx->timing, 0, sizeof(struct iwl_rxon_time_cmd));
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ctx->timing.timestamp = cpu_to_le64(priv->timestamp);
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ctx->timing.listen_interval = cpu_to_le16(conf->listen_interval);
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beacon_int = vif ? vif->bss_conf.beacon_int : 0;
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/*
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* TODO: For IBSS we need to get atim_window from mac80211,
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* for now just always use 0
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*/
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ctx->timing.atim_window = 0;
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if (ctx->ctxid == IWL_RXON_CTX_PAN &&
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(!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION) &&
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iwl_is_associated(priv, IWL_RXON_CTX_BSS) &&
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priv->contexts[IWL_RXON_CTX_BSS].vif &&
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priv->contexts[IWL_RXON_CTX_BSS].vif->bss_conf.beacon_int) {
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ctx->timing.beacon_interval =
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priv->contexts[IWL_RXON_CTX_BSS].timing.beacon_interval;
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beacon_int = le16_to_cpu(ctx->timing.beacon_interval);
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} else if (ctx->ctxid == IWL_RXON_CTX_BSS &&
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iwl_is_associated(priv, IWL_RXON_CTX_PAN) &&
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priv->contexts[IWL_RXON_CTX_PAN].vif &&
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priv->contexts[IWL_RXON_CTX_PAN].vif->bss_conf.beacon_int &&
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(!iwl_is_associated_ctx(ctx) || !ctx->vif ||
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!ctx->vif->bss_conf.beacon_int)) {
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ctx->timing.beacon_interval =
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priv->contexts[IWL_RXON_CTX_PAN].timing.beacon_interval;
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beacon_int = le16_to_cpu(ctx->timing.beacon_interval);
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} else {
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beacon_int = iwl_adjust_beacon_interval(beacon_int,
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IWL_MAX_UCODE_BEACON_INTERVAL * TIME_UNIT);
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ctx->timing.beacon_interval = cpu_to_le16(beacon_int);
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}
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ctx->beacon_int = beacon_int;
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tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
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interval_tm = beacon_int * TIME_UNIT;
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rem = do_div(tsf, interval_tm);
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ctx->timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
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ctx->timing.dtim_period = vif ? (vif->bss_conf.dtim_period ?: 1) : 1;
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IWL_DEBUG_ASSOC(priv,
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"beacon interval %d beacon timer %d beacon tim %d\n",
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le16_to_cpu(ctx->timing.beacon_interval),
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le32_to_cpu(ctx->timing.beacon_init_val),
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le16_to_cpu(ctx->timing.atim_window));
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return iwl_trans_send_cmd_pdu(trans(priv), ctx->rxon_timing_cmd,
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CMD_SYNC, sizeof(ctx->timing), &ctx->timing);
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}
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void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
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int hw_decrypt)
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{
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struct iwl_rxon_cmd *rxon = &ctx->staging;
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if (hw_decrypt)
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rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
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else
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rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
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}
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/* validate RXON structure is valid */
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int iwl_check_rxon_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
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{
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struct iwl_rxon_cmd *rxon = &ctx->staging;
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u32 errors = 0;
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if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
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if (rxon->flags & RXON_FLG_TGJ_NARROW_BAND_MSK) {
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IWL_WARN(priv, "check 2.4G: wrong narrow\n");
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errors |= BIT(0);
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}
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if (rxon->flags & RXON_FLG_RADAR_DETECT_MSK) {
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IWL_WARN(priv, "check 2.4G: wrong radar\n");
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errors |= BIT(1);
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}
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} else {
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if (!(rxon->flags & RXON_FLG_SHORT_SLOT_MSK)) {
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IWL_WARN(priv, "check 5.2G: not short slot!\n");
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errors |= BIT(2);
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}
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if (rxon->flags & RXON_FLG_CCK_MSK) {
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IWL_WARN(priv, "check 5.2G: CCK!\n");
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errors |= BIT(3);
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}
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}
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if ((rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1) {
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IWL_WARN(priv, "mac/bssid mcast!\n");
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errors |= BIT(4);
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}
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/* make sure basic rates 6Mbps and 1Mbps are supported */
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if ((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0 &&
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(rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0) {
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IWL_WARN(priv, "neither 1 nor 6 are basic\n");
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errors |= BIT(5);
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}
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if (le16_to_cpu(rxon->assoc_id) > 2007) {
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IWL_WARN(priv, "aid > 2007\n");
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errors |= BIT(6);
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}
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if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
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== (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) {
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IWL_WARN(priv, "CCK and short slot\n");
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errors |= BIT(7);
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}
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if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
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|
== (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)) {
|
|
IWL_WARN(priv, "CCK and auto detect");
|
|
errors |= BIT(8);
|
|
}
|
|
|
|
if ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
|
|
RXON_FLG_TGG_PROTECT_MSK)) ==
|
|
RXON_FLG_TGG_PROTECT_MSK) {
|
|
IWL_WARN(priv, "TGg but no auto-detect\n");
|
|
errors |= BIT(9);
|
|
}
|
|
|
|
if (rxon->channel == 0) {
|
|
IWL_WARN(priv, "zero channel is invalid\n");
|
|
errors |= BIT(10);
|
|
}
|
|
|
|
WARN(errors, "Invalid RXON (%#x), channel %d",
|
|
errors, le16_to_cpu(rxon->channel));
|
|
|
|
return errors ? -EINVAL : 0;
|
|
}
|
|
|
|
/**
|
|
* iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
|
|
* @priv: staging_rxon is compared to active_rxon
|
|
*
|
|
* If the RXON structure is changing enough to require a new tune,
|
|
* or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
|
|
* a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
|
|
*/
|
|
int iwl_full_rxon_required(struct iwl_priv *priv,
|
|
struct iwl_rxon_context *ctx)
|
|
{
|
|
const struct iwl_rxon_cmd *staging = &ctx->staging;
|
|
const struct iwl_rxon_cmd *active = &ctx->active;
|
|
|
|
#define CHK(cond) \
|
|
if ((cond)) { \
|
|
IWL_DEBUG_INFO(priv, "need full RXON - " #cond "\n"); \
|
|
return 1; \
|
|
}
|
|
|
|
#define CHK_NEQ(c1, c2) \
|
|
if ((c1) != (c2)) { \
|
|
IWL_DEBUG_INFO(priv, "need full RXON - " \
|
|
#c1 " != " #c2 " - %d != %d\n", \
|
|
(c1), (c2)); \
|
|
return 1; \
|
|
}
|
|
|
|
/* These items are only settable from the full RXON command */
|
|
CHK(!iwl_is_associated_ctx(ctx));
|
|
CHK(compare_ether_addr(staging->bssid_addr, active->bssid_addr));
|
|
CHK(compare_ether_addr(staging->node_addr, active->node_addr));
|
|
CHK(compare_ether_addr(staging->wlap_bssid_addr,
|
|
active->wlap_bssid_addr));
|
|
CHK_NEQ(staging->dev_type, active->dev_type);
|
|
CHK_NEQ(staging->channel, active->channel);
|
|
CHK_NEQ(staging->air_propagation, active->air_propagation);
|
|
CHK_NEQ(staging->ofdm_ht_single_stream_basic_rates,
|
|
active->ofdm_ht_single_stream_basic_rates);
|
|
CHK_NEQ(staging->ofdm_ht_dual_stream_basic_rates,
|
|
active->ofdm_ht_dual_stream_basic_rates);
|
|
CHK_NEQ(staging->ofdm_ht_triple_stream_basic_rates,
|
|
active->ofdm_ht_triple_stream_basic_rates);
|
|
CHK_NEQ(staging->assoc_id, active->assoc_id);
|
|
|
|
/* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
|
|
* be updated with the RXON_ASSOC command -- however only some
|
|
* flag transitions are allowed using RXON_ASSOC */
|
|
|
|
/* Check if we are not switching bands */
|
|
CHK_NEQ(staging->flags & RXON_FLG_BAND_24G_MSK,
|
|
active->flags & RXON_FLG_BAND_24G_MSK);
|
|
|
|
/* Check if we are switching association toggle */
|
|
CHK_NEQ(staging->filter_flags & RXON_FILTER_ASSOC_MSK,
|
|
active->filter_flags & RXON_FILTER_ASSOC_MSK);
|
|
|
|
#undef CHK
|
|
#undef CHK_NEQ
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void _iwl_set_rxon_ht(struct iwl_priv *priv,
|
|
struct iwl_ht_config *ht_conf,
|
|
struct iwl_rxon_context *ctx)
|
|
{
|
|
struct iwl_rxon_cmd *rxon = &ctx->staging;
|
|
|
|
if (!ctx->ht.enabled) {
|
|
rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
|
|
RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
|
|
RXON_FLG_HT40_PROT_MSK |
|
|
RXON_FLG_HT_PROT_MSK);
|
|
return;
|
|
}
|
|
|
|
/* FIXME: if the definition of ht.protection changed, the "translation"
|
|
* will be needed for rxon->flags
|
|
*/
|
|
rxon->flags |= cpu_to_le32(ctx->ht.protection << RXON_FLG_HT_OPERATING_MODE_POS);
|
|
|
|
/* Set up channel bandwidth:
|
|
* 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */
|
|
/* clear the HT channel mode before set the mode */
|
|
rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
|
|
RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
|
|
if (iwl_is_ht40_tx_allowed(priv, ctx, NULL)) {
|
|
/* pure ht40 */
|
|
if (ctx->ht.protection == IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) {
|
|
rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40;
|
|
/* Note: control channel is opposite of extension channel */
|
|
switch (ctx->ht.extension_chan_offset) {
|
|
case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
|
|
rxon->flags &= ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
|
|
break;
|
|
case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
|
|
rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
|
|
break;
|
|
}
|
|
} else {
|
|
/* Note: control channel is opposite of extension channel */
|
|
switch (ctx->ht.extension_chan_offset) {
|
|
case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
|
|
rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
|
|
rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
|
|
break;
|
|
case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
|
|
rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
|
|
rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
|
|
break;
|
|
case IEEE80211_HT_PARAM_CHA_SEC_NONE:
|
|
default:
|
|
/* channel location only valid if in Mixed mode */
|
|
IWL_ERR(priv, "invalid extension channel offset\n");
|
|
break;
|
|
}
|
|
}
|
|
} else {
|
|
rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY;
|
|
}
|
|
|
|
iwlagn_set_rxon_chain(priv, ctx);
|
|
|
|
IWL_DEBUG_ASSOC(priv, "rxon flags 0x%X operation mode :0x%X "
|
|
"extension channel offset 0x%x\n",
|
|
le32_to_cpu(rxon->flags), ctx->ht.protection,
|
|
ctx->ht.extension_chan_offset);
|
|
}
|
|
|
|
void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_config *ht_conf)
|
|
{
|
|
struct iwl_rxon_context *ctx;
|
|
|
|
for_each_context(priv, ctx)
|
|
_iwl_set_rxon_ht(priv, ht_conf, ctx);
|
|
}
|
|
|
|
/* Return valid, unused, channel for a passive scan to reset the RF */
|
|
u8 iwl_get_single_channel_number(struct iwl_priv *priv,
|
|
enum ieee80211_band band)
|
|
{
|
|
const struct iwl_channel_info *ch_info;
|
|
int i;
|
|
u8 channel = 0;
|
|
u8 min, max;
|
|
struct iwl_rxon_context *ctx;
|
|
|
|
if (band == IEEE80211_BAND_5GHZ) {
|
|
min = 14;
|
|
max = priv->channel_count;
|
|
} else {
|
|
min = 0;
|
|
max = 14;
|
|
}
|
|
|
|
for (i = min; i < max; i++) {
|
|
bool busy = false;
|
|
|
|
for_each_context(priv, ctx) {
|
|
busy = priv->channel_info[i].channel ==
|
|
le16_to_cpu(ctx->staging.channel);
|
|
if (busy)
|
|
break;
|
|
}
|
|
|
|
if (busy)
|
|
continue;
|
|
|
|
channel = priv->channel_info[i].channel;
|
|
ch_info = iwl_get_channel_info(priv, band, channel);
|
|
if (is_channel_valid(ch_info))
|
|
break;
|
|
}
|
|
|
|
return channel;
|
|
}
|
|
|
|
/**
|
|
* iwl_set_rxon_channel - Set the band and channel values in staging RXON
|
|
* @ch: requested channel as a pointer to struct ieee80211_channel
|
|
|
|
* NOTE: Does not commit to the hardware; it sets appropriate bit fields
|
|
* in the staging RXON flag structure based on the ch->band
|
|
*/
|
|
int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch,
|
|
struct iwl_rxon_context *ctx)
|
|
{
|
|
enum ieee80211_band band = ch->band;
|
|
u16 channel = ch->hw_value;
|
|
|
|
if ((le16_to_cpu(ctx->staging.channel) == channel) &&
|
|
(priv->band == band))
|
|
return 0;
|
|
|
|
ctx->staging.channel = cpu_to_le16(channel);
|
|
if (band == IEEE80211_BAND_5GHZ)
|
|
ctx->staging.flags &= ~RXON_FLG_BAND_24G_MSK;
|
|
else
|
|
ctx->staging.flags |= RXON_FLG_BAND_24G_MSK;
|
|
|
|
priv->band = band;
|
|
|
|
IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void iwl_set_flags_for_band(struct iwl_priv *priv,
|
|
struct iwl_rxon_context *ctx,
|
|
enum ieee80211_band band,
|
|
struct ieee80211_vif *vif)
|
|
{
|
|
if (band == IEEE80211_BAND_5GHZ) {
|
|
ctx->staging.flags &=
|
|
~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
|
|
| RXON_FLG_CCK_MSK);
|
|
ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
|
|
} else {
|
|
/* Copied from iwl_post_associate() */
|
|
if (vif && vif->bss_conf.use_short_slot)
|
|
ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
|
|
else
|
|
ctx->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
|
|
|
|
ctx->staging.flags |= RXON_FLG_BAND_24G_MSK;
|
|
ctx->staging.flags |= RXON_FLG_AUTO_DETECT_MSK;
|
|
ctx->staging.flags &= ~RXON_FLG_CCK_MSK;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* initialize rxon structure with default values from eeprom
|
|
*/
|
|
void iwl_connection_init_rx_config(struct iwl_priv *priv,
|
|
struct iwl_rxon_context *ctx)
|
|
{
|
|
const struct iwl_channel_info *ch_info;
|
|
|
|
memset(&ctx->staging, 0, sizeof(ctx->staging));
|
|
|
|
if (!ctx->vif) {
|
|
ctx->staging.dev_type = ctx->unused_devtype;
|
|
} else switch (ctx->vif->type) {
|
|
case NL80211_IFTYPE_AP:
|
|
ctx->staging.dev_type = ctx->ap_devtype;
|
|
break;
|
|
|
|
case NL80211_IFTYPE_STATION:
|
|
ctx->staging.dev_type = ctx->station_devtype;
|
|
ctx->staging.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
|
|
break;
|
|
|
|
case NL80211_IFTYPE_ADHOC:
|
|
ctx->staging.dev_type = ctx->ibss_devtype;
|
|
ctx->staging.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
|
|
ctx->staging.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
|
|
RXON_FILTER_ACCEPT_GRP_MSK;
|
|
break;
|
|
|
|
default:
|
|
IWL_ERR(priv, "Unsupported interface type %d\n",
|
|
ctx->vif->type);
|
|
break;
|
|
}
|
|
|
|
#if 0
|
|
/* TODO: Figure out when short_preamble would be set and cache from
|
|
* that */
|
|
if (!hw_to_local(priv->hw)->short_preamble)
|
|
ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
|
|
else
|
|
ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
|
|
#endif
|
|
|
|
ch_info = iwl_get_channel_info(priv, priv->band,
|
|
le16_to_cpu(ctx->active.channel));
|
|
|
|
if (!ch_info)
|
|
ch_info = &priv->channel_info[0];
|
|
|
|
ctx->staging.channel = cpu_to_le16(ch_info->channel);
|
|
priv->band = ch_info->band;
|
|
|
|
iwl_set_flags_for_band(priv, ctx, priv->band, ctx->vif);
|
|
|
|
ctx->staging.ofdm_basic_rates =
|
|
(IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
|
|
ctx->staging.cck_basic_rates =
|
|
(IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
|
|
|
|
/* clear both MIX and PURE40 mode flag */
|
|
ctx->staging.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED |
|
|
RXON_FLG_CHANNEL_MODE_PURE_40);
|
|
if (ctx->vif)
|
|
memcpy(ctx->staging.node_addr, ctx->vif->addr, ETH_ALEN);
|
|
|
|
ctx->staging.ofdm_ht_single_stream_basic_rates = 0xff;
|
|
ctx->staging.ofdm_ht_dual_stream_basic_rates = 0xff;
|
|
ctx->staging.ofdm_ht_triple_stream_basic_rates = 0xff;
|
|
}
|
|
|
|
void iwl_set_rate(struct iwl_priv *priv)
|
|
{
|
|
const struct ieee80211_supported_band *hw = NULL;
|
|
struct ieee80211_rate *rate;
|
|
struct iwl_rxon_context *ctx;
|
|
int i;
|
|
|
|
hw = iwl_get_hw_mode(priv, priv->band);
|
|
if (!hw) {
|
|
IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
|
|
return;
|
|
}
|
|
|
|
priv->active_rate = 0;
|
|
|
|
for (i = 0; i < hw->n_bitrates; i++) {
|
|
rate = &(hw->bitrates[i]);
|
|
if (rate->hw_value < IWL_RATE_COUNT_LEGACY)
|
|
priv->active_rate |= (1 << rate->hw_value);
|
|
}
|
|
|
|
IWL_DEBUG_RATE(priv, "Set active_rate = %0x\n", priv->active_rate);
|
|
|
|
for_each_context(priv, ctx) {
|
|
ctx->staging.cck_basic_rates =
|
|
(IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
|
|
|
|
ctx->staging.ofdm_basic_rates =
|
|
(IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
|
|
}
|
|
}
|
|
|
|
void iwl_chswitch_done(struct iwl_priv *priv, bool is_success)
|
|
{
|
|
/*
|
|
* MULTI-FIXME
|
|
* See iwlagn_mac_channel_switch.
|
|
*/
|
|
struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
|
|
|
|
if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
|
|
return;
|
|
|
|
if (test_and_clear_bit(STATUS_CHANNEL_SWITCH_PENDING,
|
|
&priv->shrd->status))
|
|
ieee80211_chswitch_done(ctx->vif, is_success);
|
|
}
|
|
|
|
#ifdef CONFIG_IWLWIFI_DEBUG
|
|
void iwl_print_rx_config_cmd(struct iwl_priv *priv,
|
|
enum iwl_rxon_context_id ctxid)
|
|
{
|
|
struct iwl_rxon_context *ctx = &priv->contexts[ctxid];
|
|
struct iwl_rxon_cmd *rxon = &ctx->staging;
|
|
|
|
IWL_DEBUG_RADIO(priv, "RX CONFIG:\n");
|
|
iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
|
|
IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
|
|
IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
|
|
IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n",
|
|
le32_to_cpu(rxon->filter_flags));
|
|
IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type);
|
|
IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n",
|
|
rxon->ofdm_basic_rates);
|
|
IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
|
|
IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr);
|
|
IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
|
|
IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
|
|
}
|
|
#endif
|
|
|
|
void iwlagn_fw_error(struct iwl_priv *priv, bool ondemand)
|
|
{
|
|
unsigned int reload_msec;
|
|
unsigned long reload_jiffies;
|
|
|
|
/* Set the FW error flag -- cleared on iwl_down */
|
|
set_bit(STATUS_FW_ERROR, &priv->shrd->status);
|
|
|
|
/* Cancel currently queued command. */
|
|
clear_bit(STATUS_HCMD_ACTIVE, &priv->shrd->status);
|
|
|
|
iwl_abort_notification_waits(priv->shrd);
|
|
|
|
/* Keep the restart process from trying to send host
|
|
* commands by clearing the ready bit */
|
|
clear_bit(STATUS_READY, &priv->shrd->status);
|
|
|
|
wake_up(&priv->shrd->wait_command_queue);
|
|
|
|
if (!ondemand) {
|
|
/*
|
|
* If firmware keep reloading, then it indicate something
|
|
* serious wrong and firmware having problem to recover
|
|
* from it. Instead of keep trying which will fill the syslog
|
|
* and hang the system, let's just stop it
|
|
*/
|
|
reload_jiffies = jiffies;
|
|
reload_msec = jiffies_to_msecs((long) reload_jiffies -
|
|
(long) priv->reload_jiffies);
|
|
priv->reload_jiffies = reload_jiffies;
|
|
if (reload_msec <= IWL_MIN_RELOAD_DURATION) {
|
|
priv->reload_count++;
|
|
if (priv->reload_count >= IWL_MAX_CONTINUE_RELOAD_CNT) {
|
|
IWL_ERR(priv, "BUG_ON, Stop restarting\n");
|
|
return;
|
|
}
|
|
} else
|
|
priv->reload_count = 0;
|
|
}
|
|
|
|
if (!test_bit(STATUS_EXIT_PENDING, &priv->shrd->status)) {
|
|
if (iwlagn_mod_params.restart_fw) {
|
|
IWL_DEBUG_FW_ERRORS(priv,
|
|
"Restarting adapter due to uCode error.\n");
|
|
queue_work(priv->shrd->workqueue, &priv->restart);
|
|
} else
|
|
IWL_DEBUG_FW_ERRORS(priv,
|
|
"Detected FW error, but not restarting\n");
|
|
}
|
|
}
|
|
|
|
static int iwl_apm_stop_master(struct iwl_priv *priv)
|
|
{
|
|
int ret = 0;
|
|
|
|
/* stop device's busmaster DMA activity */
|
|
iwl_set_bit(bus(priv), CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER);
|
|
|
|
ret = iwl_poll_bit(bus(priv), CSR_RESET,
|
|
CSR_RESET_REG_FLAG_MASTER_DISABLED,
|
|
CSR_RESET_REG_FLAG_MASTER_DISABLED, 100);
|
|
if (ret)
|
|
IWL_WARN(priv, "Master Disable Timed Out, 100 usec\n");
|
|
|
|
IWL_DEBUG_INFO(priv, "stop master\n");
|
|
|
|
return ret;
|
|
}
|
|
|
|
void iwl_apm_stop(struct iwl_priv *priv)
|
|
{
|
|
IWL_DEBUG_INFO(priv, "Stop card, put in low power state\n");
|
|
|
|
clear_bit(STATUS_DEVICE_ENABLED, &priv->shrd->status);
|
|
|
|
/* Stop device's DMA activity */
|
|
iwl_apm_stop_master(priv);
|
|
|
|
/* Reset the entire device */
|
|
iwl_set_bit(bus(priv), CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
|
|
|
|
udelay(10);
|
|
|
|
/*
|
|
* Clear "initialization complete" bit to move adapter from
|
|
* D0A* (powered-up Active) --> D0U* (Uninitialized) state.
|
|
*/
|
|
iwl_clear_bit(bus(priv), CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
|
|
}
|
|
|
|
|
|
/*
|
|
* Start up NIC's basic functionality after it has been reset
|
|
* (e.g. after platform boot, or shutdown via iwl_apm_stop())
|
|
* NOTE: This does not load uCode nor start the embedded processor
|
|
*/
|
|
int iwl_apm_init(struct iwl_priv *priv)
|
|
{
|
|
int ret = 0;
|
|
IWL_DEBUG_INFO(priv, "Init card's basic functions\n");
|
|
|
|
/*
|
|
* Use "set_bit" below rather than "write", to preserve any hardware
|
|
* bits already set by default after reset.
|
|
*/
|
|
|
|
/* Disable L0S exit timer (platform NMI Work/Around) */
|
|
iwl_set_bit(bus(priv), CSR_GIO_CHICKEN_BITS,
|
|
CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
|
|
|
|
/*
|
|
* Disable L0s without affecting L1;
|
|
* don't wait for ICH L0s (ICH bug W/A)
|
|
*/
|
|
iwl_set_bit(bus(priv), CSR_GIO_CHICKEN_BITS,
|
|
CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX);
|
|
|
|
/* Set FH wait threshold to maximum (HW error during stress W/A) */
|
|
iwl_set_bit(bus(priv), CSR_DBG_HPET_MEM_REG, CSR_DBG_HPET_MEM_REG_VAL);
|
|
|
|
/*
|
|
* Enable HAP INTA (interrupt from management bus) to
|
|
* wake device's PCI Express link L1a -> L0s
|
|
*/
|
|
iwl_set_bit(bus(priv), CSR_HW_IF_CONFIG_REG,
|
|
CSR_HW_IF_CONFIG_REG_BIT_HAP_WAKE_L1A);
|
|
|
|
bus_apm_config(bus(priv));
|
|
|
|
/* Configure analog phase-lock-loop before activating to D0A */
|
|
if (cfg(priv)->base_params->pll_cfg_val)
|
|
iwl_set_bit(bus(priv), CSR_ANA_PLL_CFG,
|
|
cfg(priv)->base_params->pll_cfg_val);
|
|
|
|
/*
|
|
* Set "initialization complete" bit to move adapter from
|
|
* D0U* --> D0A* (powered-up active) state.
|
|
*/
|
|
iwl_set_bit(bus(priv), CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
|
|
|
|
/*
|
|
* Wait for clock stabilization; once stabilized, access to
|
|
* device-internal resources is supported, e.g. iwl_write_prph()
|
|
* and accesses to uCode SRAM.
|
|
*/
|
|
ret = iwl_poll_bit(bus(priv), CSR_GP_CNTRL,
|
|
CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
|
|
CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
|
|
if (ret < 0) {
|
|
IWL_DEBUG_INFO(priv, "Failed to init the card\n");
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Enable DMA clock and wait for it to stabilize.
|
|
*
|
|
* Write to "CLK_EN_REG"; "1" bits enable clocks, while "0" bits
|
|
* do not disable clocks. This preserves any hardware bits already
|
|
* set by default in "CLK_CTRL_REG" after reset.
|
|
*/
|
|
iwl_write_prph(bus(priv), APMG_CLK_EN_REG, APMG_CLK_VAL_DMA_CLK_RQT);
|
|
udelay(20);
|
|
|
|
/* Disable L1-Active */
|
|
iwl_set_bits_prph(bus(priv), APMG_PCIDEV_STT_REG,
|
|
APMG_PCIDEV_STT_VAL_L1_ACT_DIS);
|
|
|
|
set_bit(STATUS_DEVICE_ENABLED, &priv->shrd->status);
|
|
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
|
|
int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
|
|
{
|
|
int ret;
|
|
s8 prev_tx_power;
|
|
bool defer;
|
|
struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
|
|
|
|
lockdep_assert_held(&priv->shrd->mutex);
|
|
|
|
if (priv->tx_power_user_lmt == tx_power && !force)
|
|
return 0;
|
|
|
|
if (tx_power < IWLAGN_TX_POWER_TARGET_POWER_MIN) {
|
|
IWL_WARN(priv,
|
|
"Requested user TXPOWER %d below lower limit %d.\n",
|
|
tx_power,
|
|
IWLAGN_TX_POWER_TARGET_POWER_MIN);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (tx_power > priv->tx_power_device_lmt) {
|
|
IWL_WARN(priv,
|
|
"Requested user TXPOWER %d above upper limit %d.\n",
|
|
tx_power, priv->tx_power_device_lmt);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (!iwl_is_ready_rf(priv->shrd))
|
|
return -EIO;
|
|
|
|
/* scan complete and commit_rxon use tx_power_next value,
|
|
* it always need to be updated for newest request */
|
|
priv->tx_power_next = tx_power;
|
|
|
|
/* do not set tx power when scanning or channel changing */
|
|
defer = test_bit(STATUS_SCANNING, &priv->shrd->status) ||
|
|
memcmp(&ctx->active, &ctx->staging, sizeof(ctx->staging));
|
|
if (defer && !force) {
|
|
IWL_DEBUG_INFO(priv, "Deferring tx power set\n");
|
|
return 0;
|
|
}
|
|
|
|
prev_tx_power = priv->tx_power_user_lmt;
|
|
priv->tx_power_user_lmt = tx_power;
|
|
|
|
ret = iwlagn_send_tx_power(priv);
|
|
|
|
/* if fail to set tx_power, restore the orig. tx power */
|
|
if (ret) {
|
|
priv->tx_power_user_lmt = prev_tx_power;
|
|
priv->tx_power_next = prev_tx_power;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
void iwl_send_bt_config(struct iwl_priv *priv)
|
|
{
|
|
struct iwl_bt_cmd bt_cmd = {
|
|
.lead_time = BT_LEAD_TIME_DEF,
|
|
.max_kill = BT_MAX_KILL_DEF,
|
|
.kill_ack_mask = 0,
|
|
.kill_cts_mask = 0,
|
|
};
|
|
|
|
if (!iwlagn_mod_params.bt_coex_active)
|
|
bt_cmd.flags = BT_COEX_DISABLE;
|
|
else
|
|
bt_cmd.flags = BT_COEX_ENABLE;
|
|
|
|
priv->bt_enable_flag = bt_cmd.flags;
|
|
IWL_DEBUG_INFO(priv, "BT coex %s\n",
|
|
(bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active");
|
|
|
|
if (iwl_trans_send_cmd_pdu(trans(priv), REPLY_BT_CONFIG,
|
|
CMD_SYNC, sizeof(struct iwl_bt_cmd), &bt_cmd))
|
|
IWL_ERR(priv, "failed to send BT Coex Config\n");
|
|
}
|
|
|
|
int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear)
|
|
{
|
|
struct iwl_statistics_cmd statistics_cmd = {
|
|
.configuration_flags =
|
|
clear ? IWL_STATS_CONF_CLEAR_STATS : 0,
|
|
};
|
|
|
|
if (flags & CMD_ASYNC)
|
|
return iwl_trans_send_cmd_pdu(trans(priv), REPLY_STATISTICS_CMD,
|
|
CMD_ASYNC,
|
|
sizeof(struct iwl_statistics_cmd),
|
|
&statistics_cmd);
|
|
else
|
|
return iwl_trans_send_cmd_pdu(trans(priv), REPLY_STATISTICS_CMD,
|
|
CMD_SYNC,
|
|
sizeof(struct iwl_statistics_cmd),
|
|
&statistics_cmd);
|
|
}
|
|
|
|
|
|
|
|
|
|
#ifdef CONFIG_IWLWIFI_DEBUGFS
|
|
|
|
#define IWL_TRAFFIC_DUMP_SIZE (IWL_TRAFFIC_ENTRY_SIZE * IWL_TRAFFIC_ENTRIES)
|
|
|
|
void iwl_reset_traffic_log(struct iwl_priv *priv)
|
|
{
|
|
priv->tx_traffic_idx = 0;
|
|
priv->rx_traffic_idx = 0;
|
|
if (priv->tx_traffic)
|
|
memset(priv->tx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
|
|
if (priv->rx_traffic)
|
|
memset(priv->rx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
|
|
}
|
|
|
|
int iwl_alloc_traffic_mem(struct iwl_priv *priv)
|
|
{
|
|
u32 traffic_size = IWL_TRAFFIC_DUMP_SIZE;
|
|
|
|
if (iwl_get_debug_level(priv->shrd) & IWL_DL_TX) {
|
|
if (!priv->tx_traffic) {
|
|
priv->tx_traffic =
|
|
kzalloc(traffic_size, GFP_KERNEL);
|
|
if (!priv->tx_traffic)
|
|
return -ENOMEM;
|
|
}
|
|
}
|
|
if (iwl_get_debug_level(priv->shrd) & IWL_DL_RX) {
|
|
if (!priv->rx_traffic) {
|
|
priv->rx_traffic =
|
|
kzalloc(traffic_size, GFP_KERNEL);
|
|
if (!priv->rx_traffic)
|
|
return -ENOMEM;
|
|
}
|
|
}
|
|
iwl_reset_traffic_log(priv);
|
|
return 0;
|
|
}
|
|
|
|
void iwl_free_traffic_mem(struct iwl_priv *priv)
|
|
{
|
|
kfree(priv->tx_traffic);
|
|
priv->tx_traffic = NULL;
|
|
|
|
kfree(priv->rx_traffic);
|
|
priv->rx_traffic = NULL;
|
|
}
|
|
|
|
void iwl_dbg_log_tx_data_frame(struct iwl_priv *priv,
|
|
u16 length, struct ieee80211_hdr *header)
|
|
{
|
|
__le16 fc;
|
|
u16 len;
|
|
|
|
if (likely(!(iwl_get_debug_level(priv->shrd) & IWL_DL_TX)))
|
|
return;
|
|
|
|
if (!priv->tx_traffic)
|
|
return;
|
|
|
|
fc = header->frame_control;
|
|
if (ieee80211_is_data(fc)) {
|
|
len = (length > IWL_TRAFFIC_ENTRY_SIZE)
|
|
? IWL_TRAFFIC_ENTRY_SIZE : length;
|
|
memcpy((priv->tx_traffic +
|
|
(priv->tx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
|
|
header, len);
|
|
priv->tx_traffic_idx =
|
|
(priv->tx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
|
|
}
|
|
}
|
|
|
|
void iwl_dbg_log_rx_data_frame(struct iwl_priv *priv,
|
|
u16 length, struct ieee80211_hdr *header)
|
|
{
|
|
__le16 fc;
|
|
u16 len;
|
|
|
|
if (likely(!(iwl_get_debug_level(priv->shrd) & IWL_DL_RX)))
|
|
return;
|
|
|
|
if (!priv->rx_traffic)
|
|
return;
|
|
|
|
fc = header->frame_control;
|
|
if (ieee80211_is_data(fc)) {
|
|
len = (length > IWL_TRAFFIC_ENTRY_SIZE)
|
|
? IWL_TRAFFIC_ENTRY_SIZE : length;
|
|
memcpy((priv->rx_traffic +
|
|
(priv->rx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
|
|
header, len);
|
|
priv->rx_traffic_idx =
|
|
(priv->rx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
|
|
}
|
|
}
|
|
|
|
const char *get_mgmt_string(int cmd)
|
|
{
|
|
switch (cmd) {
|
|
IWL_CMD(MANAGEMENT_ASSOC_REQ);
|
|
IWL_CMD(MANAGEMENT_ASSOC_RESP);
|
|
IWL_CMD(MANAGEMENT_REASSOC_REQ);
|
|
IWL_CMD(MANAGEMENT_REASSOC_RESP);
|
|
IWL_CMD(MANAGEMENT_PROBE_REQ);
|
|
IWL_CMD(MANAGEMENT_PROBE_RESP);
|
|
IWL_CMD(MANAGEMENT_BEACON);
|
|
IWL_CMD(MANAGEMENT_ATIM);
|
|
IWL_CMD(MANAGEMENT_DISASSOC);
|
|
IWL_CMD(MANAGEMENT_AUTH);
|
|
IWL_CMD(MANAGEMENT_DEAUTH);
|
|
IWL_CMD(MANAGEMENT_ACTION);
|
|
default:
|
|
return "UNKNOWN";
|
|
|
|
}
|
|
}
|
|
|
|
const char *get_ctrl_string(int cmd)
|
|
{
|
|
switch (cmd) {
|
|
IWL_CMD(CONTROL_BACK_REQ);
|
|
IWL_CMD(CONTROL_BACK);
|
|
IWL_CMD(CONTROL_PSPOLL);
|
|
IWL_CMD(CONTROL_RTS);
|
|
IWL_CMD(CONTROL_CTS);
|
|
IWL_CMD(CONTROL_ACK);
|
|
IWL_CMD(CONTROL_CFEND);
|
|
IWL_CMD(CONTROL_CFENDACK);
|
|
default:
|
|
return "UNKNOWN";
|
|
|
|
}
|
|
}
|
|
|
|
void iwl_clear_traffic_stats(struct iwl_priv *priv)
|
|
{
|
|
memset(&priv->tx_stats, 0, sizeof(struct traffic_stats));
|
|
memset(&priv->rx_stats, 0, sizeof(struct traffic_stats));
|
|
}
|
|
|
|
/*
|
|
* if CONFIG_IWLWIFI_DEBUGFS defined, iwl_update_stats function will
|
|
* record all the MGMT, CTRL and DATA pkt for both TX and Rx pass.
|
|
* Use debugFs to display the rx/rx_statistics
|
|
* if CONFIG_IWLWIFI_DEBUGFS not being defined, then no MGMT and CTRL
|
|
* information will be recorded, but DATA pkt still will be recorded
|
|
* for the reason of iwl_led.c need to control the led blinking based on
|
|
* number of tx and rx data.
|
|
*
|
|
*/
|
|
void iwl_update_stats(struct iwl_priv *priv, bool is_tx, __le16 fc, u16 len)
|
|
{
|
|
struct traffic_stats *stats;
|
|
|
|
if (is_tx)
|
|
stats = &priv->tx_stats;
|
|
else
|
|
stats = &priv->rx_stats;
|
|
|
|
if (ieee80211_is_mgmt(fc)) {
|
|
switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
|
|
case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
|
|
stats->mgmt[MANAGEMENT_ASSOC_REQ]++;
|
|
break;
|
|
case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP):
|
|
stats->mgmt[MANAGEMENT_ASSOC_RESP]++;
|
|
break;
|
|
case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
|
|
stats->mgmt[MANAGEMENT_REASSOC_REQ]++;
|
|
break;
|
|
case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP):
|
|
stats->mgmt[MANAGEMENT_REASSOC_RESP]++;
|
|
break;
|
|
case cpu_to_le16(IEEE80211_STYPE_PROBE_REQ):
|
|
stats->mgmt[MANAGEMENT_PROBE_REQ]++;
|
|
break;
|
|
case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP):
|
|
stats->mgmt[MANAGEMENT_PROBE_RESP]++;
|
|
break;
|
|
case cpu_to_le16(IEEE80211_STYPE_BEACON):
|
|
stats->mgmt[MANAGEMENT_BEACON]++;
|
|
break;
|
|
case cpu_to_le16(IEEE80211_STYPE_ATIM):
|
|
stats->mgmt[MANAGEMENT_ATIM]++;
|
|
break;
|
|
case cpu_to_le16(IEEE80211_STYPE_DISASSOC):
|
|
stats->mgmt[MANAGEMENT_DISASSOC]++;
|
|
break;
|
|
case cpu_to_le16(IEEE80211_STYPE_AUTH):
|
|
stats->mgmt[MANAGEMENT_AUTH]++;
|
|
break;
|
|
case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
|
|
stats->mgmt[MANAGEMENT_DEAUTH]++;
|
|
break;
|
|
case cpu_to_le16(IEEE80211_STYPE_ACTION):
|
|
stats->mgmt[MANAGEMENT_ACTION]++;
|
|
break;
|
|
}
|
|
} else if (ieee80211_is_ctl(fc)) {
|
|
switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
|
|
case cpu_to_le16(IEEE80211_STYPE_BACK_REQ):
|
|
stats->ctrl[CONTROL_BACK_REQ]++;
|
|
break;
|
|
case cpu_to_le16(IEEE80211_STYPE_BACK):
|
|
stats->ctrl[CONTROL_BACK]++;
|
|
break;
|
|
case cpu_to_le16(IEEE80211_STYPE_PSPOLL):
|
|
stats->ctrl[CONTROL_PSPOLL]++;
|
|
break;
|
|
case cpu_to_le16(IEEE80211_STYPE_RTS):
|
|
stats->ctrl[CONTROL_RTS]++;
|
|
break;
|
|
case cpu_to_le16(IEEE80211_STYPE_CTS):
|
|
stats->ctrl[CONTROL_CTS]++;
|
|
break;
|
|
case cpu_to_le16(IEEE80211_STYPE_ACK):
|
|
stats->ctrl[CONTROL_ACK]++;
|
|
break;
|
|
case cpu_to_le16(IEEE80211_STYPE_CFEND):
|
|
stats->ctrl[CONTROL_CFEND]++;
|
|
break;
|
|
case cpu_to_le16(IEEE80211_STYPE_CFENDACK):
|
|
stats->ctrl[CONTROL_CFENDACK]++;
|
|
break;
|
|
}
|
|
} else {
|
|
/* data */
|
|
stats->data_cnt++;
|
|
stats->data_bytes += len;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
static void iwl_force_rf_reset(struct iwl_priv *priv)
|
|
{
|
|
if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
|
|
return;
|
|
|
|
if (!iwl_is_any_associated(priv)) {
|
|
IWL_DEBUG_SCAN(priv, "force reset rejected: not associated\n");
|
|
return;
|
|
}
|
|
/*
|
|
* There is no easy and better way to force reset the radio,
|
|
* the only known method is switching channel which will force to
|
|
* reset and tune the radio.
|
|
* Use internal short scan (single channel) operation to should
|
|
* achieve this objective.
|
|
* Driver should reset the radio when number of consecutive missed
|
|
* beacon, or any other uCode error condition detected.
|
|
*/
|
|
IWL_DEBUG_INFO(priv, "perform radio reset.\n");
|
|
iwl_internal_short_hw_scan(priv);
|
|
}
|
|
|
|
|
|
int iwl_force_reset(struct iwl_priv *priv, int mode, bool external)
|
|
{
|
|
struct iwl_force_reset *force_reset;
|
|
|
|
if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
|
|
return -EINVAL;
|
|
|
|
if (mode >= IWL_MAX_FORCE_RESET) {
|
|
IWL_DEBUG_INFO(priv, "invalid reset request.\n");
|
|
return -EINVAL;
|
|
}
|
|
force_reset = &priv->force_reset[mode];
|
|
force_reset->reset_request_count++;
|
|
if (!external) {
|
|
if (force_reset->last_force_reset_jiffies &&
|
|
time_after(force_reset->last_force_reset_jiffies +
|
|
force_reset->reset_duration, jiffies)) {
|
|
IWL_DEBUG_INFO(priv, "force reset rejected\n");
|
|
force_reset->reset_reject_count++;
|
|
return -EAGAIN;
|
|
}
|
|
}
|
|
force_reset->reset_success_count++;
|
|
force_reset->last_force_reset_jiffies = jiffies;
|
|
IWL_DEBUG_INFO(priv, "perform force reset (%d)\n", mode);
|
|
switch (mode) {
|
|
case IWL_RF_RESET:
|
|
iwl_force_rf_reset(priv);
|
|
break;
|
|
case IWL_FW_RESET:
|
|
/*
|
|
* if the request is from external(ex: debugfs),
|
|
* then always perform the request in regardless the module
|
|
* parameter setting
|
|
* if the request is from internal (uCode error or driver
|
|
* detect failure), then fw_restart module parameter
|
|
* need to be check before performing firmware reload
|
|
*/
|
|
if (!external && !iwlagn_mod_params.restart_fw) {
|
|
IWL_DEBUG_INFO(priv, "Cancel firmware reload based on "
|
|
"module parameter setting\n");
|
|
break;
|
|
}
|
|
IWL_ERR(priv, "On demand firmware reload\n");
|
|
iwlagn_fw_error(priv, true);
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
int iwl_cmd_echo_test(struct iwl_priv *priv)
|
|
{
|
|
int ret;
|
|
struct iwl_host_cmd cmd = {
|
|
.id = REPLY_ECHO,
|
|
.len = { 0 },
|
|
.flags = CMD_SYNC,
|
|
};
|
|
|
|
ret = iwl_trans_send_cmd(trans(priv), &cmd);
|
|
if (ret)
|
|
IWL_ERR(priv, "echo testing fail: 0X%x\n", ret);
|
|
else
|
|
IWL_DEBUG_INFO(priv, "echo testing pass\n");
|
|
return ret;
|
|
}
|
|
|
|
static inline int iwl_check_stuck_queue(struct iwl_priv *priv, int txq)
|
|
{
|
|
if (iwl_trans_check_stuck_queue(trans(priv), txq)) {
|
|
int ret;
|
|
ret = iwl_force_reset(priv, IWL_FW_RESET, false);
|
|
return (ret == -EAGAIN) ? 0 : 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Making watchdog tick be a quarter of timeout assure we will
|
|
* discover the queue hung between timeout and 1.25*timeout
|
|
*/
|
|
#define IWL_WD_TICK(timeout) ((timeout) / 4)
|
|
|
|
/*
|
|
* Watchdog timer callback, we check each tx queue for stuck, if if hung
|
|
* we reset the firmware. If everything is fine just rearm the timer.
|
|
*/
|
|
void iwl_bg_watchdog(unsigned long data)
|
|
{
|
|
struct iwl_priv *priv = (struct iwl_priv *)data;
|
|
int cnt;
|
|
unsigned long timeout;
|
|
|
|
if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
|
|
return;
|
|
|
|
if (iwl_is_rfkill(priv->shrd))
|
|
return;
|
|
|
|
timeout = cfg(priv)->base_params->wd_timeout;
|
|
if (timeout == 0)
|
|
return;
|
|
|
|
/* monitor and check for stuck cmd queue */
|
|
if (iwl_check_stuck_queue(priv, priv->shrd->cmd_queue))
|
|
return;
|
|
|
|
/* monitor and check for other stuck queues */
|
|
if (iwl_is_any_associated(priv)) {
|
|
for (cnt = 0; cnt < hw_params(priv).max_txq_num; cnt++) {
|
|
/* skip as we already checked the command queue */
|
|
if (cnt == priv->shrd->cmd_queue)
|
|
continue;
|
|
if (iwl_check_stuck_queue(priv, cnt))
|
|
return;
|
|
}
|
|
}
|
|
|
|
mod_timer(&priv->watchdog, jiffies +
|
|
msecs_to_jiffies(IWL_WD_TICK(timeout)));
|
|
}
|
|
|
|
void iwl_setup_watchdog(struct iwl_priv *priv)
|
|
{
|
|
unsigned int timeout = cfg(priv)->base_params->wd_timeout;
|
|
|
|
if (!iwlagn_mod_params.wd_disable) {
|
|
/* use system default */
|
|
if (timeout && !cfg(priv)->base_params->wd_disable)
|
|
mod_timer(&priv->watchdog,
|
|
jiffies +
|
|
msecs_to_jiffies(IWL_WD_TICK(timeout)));
|
|
else
|
|
del_timer(&priv->watchdog);
|
|
} else {
|
|
/* module parameter overwrite default configuration */
|
|
if (timeout && iwlagn_mod_params.wd_disable == 2)
|
|
mod_timer(&priv->watchdog,
|
|
jiffies +
|
|
msecs_to_jiffies(IWL_WD_TICK(timeout)));
|
|
else
|
|
del_timer(&priv->watchdog);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* iwl_beacon_time_mask_low - mask of lower 32 bit of beacon time
|
|
* @priv -- pointer to iwl_priv data structure
|
|
* @tsf_bits -- number of bits need to shift for masking)
|
|
*/
|
|
static inline u32 iwl_beacon_time_mask_low(struct iwl_priv *priv,
|
|
u16 tsf_bits)
|
|
{
|
|
return (1 << tsf_bits) - 1;
|
|
}
|
|
|
|
/**
|
|
* iwl_beacon_time_mask_high - mask of higher 32 bit of beacon time
|
|
* @priv -- pointer to iwl_priv data structure
|
|
* @tsf_bits -- number of bits need to shift for masking)
|
|
*/
|
|
static inline u32 iwl_beacon_time_mask_high(struct iwl_priv *priv,
|
|
u16 tsf_bits)
|
|
{
|
|
return ((1 << (32 - tsf_bits)) - 1) << tsf_bits;
|
|
}
|
|
|
|
/*
|
|
* extended beacon time format
|
|
* time in usec will be changed into a 32-bit value in extended:internal format
|
|
* the extended part is the beacon counts
|
|
* the internal part is the time in usec within one beacon interval
|
|
*/
|
|
u32 iwl_usecs_to_beacons(struct iwl_priv *priv, u32 usec, u32 beacon_interval)
|
|
{
|
|
u32 quot;
|
|
u32 rem;
|
|
u32 interval = beacon_interval * TIME_UNIT;
|
|
|
|
if (!interval || !usec)
|
|
return 0;
|
|
|
|
quot = (usec / interval) &
|
|
(iwl_beacon_time_mask_high(priv, IWLAGN_EXT_BEACON_TIME_POS) >>
|
|
IWLAGN_EXT_BEACON_TIME_POS);
|
|
rem = (usec % interval) & iwl_beacon_time_mask_low(priv,
|
|
IWLAGN_EXT_BEACON_TIME_POS);
|
|
|
|
return (quot << IWLAGN_EXT_BEACON_TIME_POS) + rem;
|
|
}
|
|
|
|
/* base is usually what we get from ucode with each received frame,
|
|
* the same as HW timer counter counting down
|
|
*/
|
|
__le32 iwl_add_beacon_time(struct iwl_priv *priv, u32 base,
|
|
u32 addon, u32 beacon_interval)
|
|
{
|
|
u32 base_low = base & iwl_beacon_time_mask_low(priv,
|
|
IWLAGN_EXT_BEACON_TIME_POS);
|
|
u32 addon_low = addon & iwl_beacon_time_mask_low(priv,
|
|
IWLAGN_EXT_BEACON_TIME_POS);
|
|
u32 interval = beacon_interval * TIME_UNIT;
|
|
u32 res = (base & iwl_beacon_time_mask_high(priv,
|
|
IWLAGN_EXT_BEACON_TIME_POS)) +
|
|
(addon & iwl_beacon_time_mask_high(priv,
|
|
IWLAGN_EXT_BEACON_TIME_POS));
|
|
|
|
if (base_low > addon_low)
|
|
res += base_low - addon_low;
|
|
else if (base_low < addon_low) {
|
|
res += interval + base_low - addon_low;
|
|
res += (1 << IWLAGN_EXT_BEACON_TIME_POS);
|
|
} else
|
|
res += (1 << IWLAGN_EXT_BEACON_TIME_POS);
|
|
|
|
return cpu_to_le32(res);
|
|
}
|
|
|
|
void iwl_set_hw_rfkill_state(struct iwl_priv *priv, bool state)
|
|
{
|
|
wiphy_rfkill_set_hw_state(priv->hw->wiphy, state);
|
|
}
|
|
|
|
void iwl_nic_config(struct iwl_priv *priv)
|
|
{
|
|
cfg(priv)->lib->nic_config(priv);
|
|
}
|
|
|
|
void iwl_free_skb(struct iwl_priv *priv, struct sk_buff *skb)
|
|
{
|
|
struct ieee80211_tx_info *info;
|
|
|
|
info = IEEE80211_SKB_CB(skb);
|
|
kmem_cache_free(priv->tx_cmd_pool, (info->driver_data[1]));
|
|
dev_kfree_skb_any(skb);
|
|
}
|
|
|
|
void iwl_stop_sw_queue(struct iwl_priv *priv, u8 ac)
|
|
{
|
|
ieee80211_stop_queue(priv->hw, ac);
|
|
}
|
|
|
|
void iwl_wake_sw_queue(struct iwl_priv *priv, u8 ac)
|
|
{
|
|
ieee80211_wake_queue(priv->hw, ac);
|
|
}
|