| /****************************************************************************** |
| * |
| * GPL LICENSE SUMMARY |
| * |
| * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of version 2 of the GNU General Public License as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, |
| * USA |
| * |
| * The full GNU General Public License is included in this distribution |
| * in the file called LICENSE.GPL. |
| * |
| * Contact Information: |
| * Intel Linux Wireless <ilw@linux.intel.com> |
| * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
| *****************************************************************************/ |
| |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/etherdevice.h> |
| #include <linux/sched.h> |
| #include <linux/slab.h> |
| #include <net/mac80211.h> |
| |
| #include "iwl-eeprom.h" |
| #include "iwl-dev.h" /* FIXME: remove */ |
| #include "iwl-debug.h" |
| #include "iwl-core.h" |
| #include "iwl-io.h" |
| #include "iwl-power.h" |
| #include "iwl-sta.h" |
| #include "iwl-helpers.h" |
| #include "iwl-agn.h" |
| #include "iwl-trans.h" |
| |
| u32 iwl_debug_level; |
| |
| const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; |
| |
| #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */ |
| #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */ |
| static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv, |
| struct ieee80211_sta_ht_cap *ht_info, |
| enum ieee80211_band band) |
| { |
| u16 max_bit_rate = 0; |
| u8 rx_chains_num = priv->hw_params.rx_chains_num; |
| u8 tx_chains_num = priv->hw_params.tx_chains_num; |
| |
| ht_info->cap = 0; |
| memset(&ht_info->mcs, 0, sizeof(ht_info->mcs)); |
| |
| ht_info->ht_supported = true; |
| |
| if (priv->cfg->ht_params && |
| priv->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 (priv->hw_params.ht40_channel & BIT(band)) { |
| ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40; |
| ht_info->cap |= IEEE80211_HT_CAP_SGI_40; |
| ht_info->mcs.rx_mask[4] = 0x01; |
| max_bit_rate = MAX_BIT_RATE_40_MHZ; |
| } |
| |
| if (iwlagn_mod_params.amsdu_size_8K) |
| ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU; |
| |
| ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF; |
| if (priv->cfg->bt_params && priv->cfg->bt_params->ampdu_factor) |
| ht_info->ampdu_factor = priv->cfg->bt_params->ampdu_factor; |
| ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF; |
| if (priv->cfg->bt_params && priv->cfg->bt_params->ampdu_density) |
| ht_info->ampdu_density = priv->cfg->bt_params->ampdu_density; |
| |
| ht_info->mcs.rx_mask[0] = 0xFF; |
| if (rx_chains_num >= 2) |
| ht_info->mcs.rx_mask[1] = 0xFF; |
| if (rx_chains_num >= 3) |
| ht_info->mcs.rx_mask[2] = 0xFF; |
| |
| /* Highest supported Rx data rate */ |
| max_bit_rate *= rx_chains_num; |
| 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_num != rx_chains_num) { |
| ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF; |
| ht_info->mcs.tx_params |= ((tx_chains_num - 1) << |
| IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT); |
| } |
| } |
| |
| /** |
| * iwlcore_init_geos - Initialize mac80211's geo/channel info based from eeprom |
| */ |
| int iwlcore_init_geos(struct iwl_priv *priv) |
| { |
| struct iwl_channel_info *ch; |
| struct ieee80211_supported_band *sband; |
| struct ieee80211_channel *channels; |
| struct ieee80211_channel *geo_ch; |
| struct ieee80211_rate *rates; |
| int i = 0; |
| s8 max_tx_power = IWLAGN_TX_POWER_TARGET_POWER_MIN; |
| |
| if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates || |
| priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) { |
| IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n"); |
| set_bit(STATUS_GEO_CONFIGURED, &priv->status); |
| return 0; |
| } |
| |
| channels = kzalloc(sizeof(struct ieee80211_channel) * |
| priv->channel_count, GFP_KERNEL); |
| if (!channels) |
| return -ENOMEM; |
| |
| rates = kzalloc((sizeof(struct ieee80211_rate) * IWL_RATE_COUNT_LEGACY), |
| GFP_KERNEL); |
| if (!rates) { |
| kfree(channels); |
| return -ENOMEM; |
| } |
| |
| /* 5.2GHz channels start after the 2.4GHz channels */ |
| sband = &priv->bands[IEEE80211_BAND_5GHZ]; |
| sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)]; |
| /* just OFDM */ |
| sband->bitrates = &rates[IWL_FIRST_OFDM_RATE]; |
| sband->n_bitrates = IWL_RATE_COUNT_LEGACY - IWL_FIRST_OFDM_RATE; |
| |
| if (priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE) |
| iwlcore_init_ht_hw_capab(priv, &sband->ht_cap, |
| IEEE80211_BAND_5GHZ); |
| |
| sband = &priv->bands[IEEE80211_BAND_2GHZ]; |
| sband->channels = channels; |
| /* OFDM & CCK */ |
| sband->bitrates = rates; |
| sband->n_bitrates = IWL_RATE_COUNT_LEGACY; |
| |
| if (priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE) |
| iwlcore_init_ht_hw_capab(priv, &sband->ht_cap, |
| IEEE80211_BAND_2GHZ); |
| |
| priv->ieee_channels = channels; |
| priv->ieee_rates = rates; |
| |
| for (i = 0; i < priv->channel_count; i++) { |
| ch = &priv->channel_info[i]; |
| |
| /* FIXME: might be removed if scan is OK */ |
| if (!is_channel_valid(ch)) |
| continue; |
| |
| sband = &priv->bands[ch->band]; |
| |
| geo_ch = &sband->channels[sband->n_channels++]; |
| |
| geo_ch->center_freq = |
| ieee80211_channel_to_frequency(ch->channel, ch->band); |
| geo_ch->max_power = ch->max_power_avg; |
| geo_ch->max_antenna_gain = 0xff; |
| geo_ch->hw_value = ch->channel; |
| |
| if (is_channel_valid(ch)) { |
| if (!(ch->flags & EEPROM_CHANNEL_IBSS)) |
| geo_ch->flags |= IEEE80211_CHAN_NO_IBSS; |
| |
| if (!(ch->flags & EEPROM_CHANNEL_ACTIVE)) |
| geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN; |
| |
| if (ch->flags & EEPROM_CHANNEL_RADAR) |
| geo_ch->flags |= IEEE80211_CHAN_RADAR; |
| |
| geo_ch->flags |= ch->ht40_extension_channel; |
| |
| if (ch->max_power_avg > max_tx_power) |
| max_tx_power = ch->max_power_avg; |
| } else { |
| geo_ch->flags |= IEEE80211_CHAN_DISABLED; |
| } |
| |
| IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n", |
| ch->channel, geo_ch->center_freq, |
| is_channel_a_band(ch) ? "5.2" : "2.4", |
| geo_ch->flags & IEEE80211_CHAN_DISABLED ? |
| "restricted" : "valid", |
| geo_ch->flags); |
| } |
| |
| priv->tx_power_device_lmt = max_tx_power; |
| priv->tx_power_user_lmt = max_tx_power; |
| priv->tx_power_next = max_tx_power; |
| |
| if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) && |
| priv->cfg->sku & EEPROM_SKU_CAP_BAND_52GHZ) { |
| char buf[32]; |
| bus_get_hw_id(priv->bus, buf, sizeof(buf)); |
| IWL_INFO(priv, "Incorrectly detected BG card as ABG. " |
| "Please send your %s to maintainer.\n", buf); |
| priv->cfg->sku &= ~EEPROM_SKU_CAP_BAND_52GHZ; |
| } |
| |
| IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n", |
| priv->bands[IEEE80211_BAND_2GHZ].n_channels, |
| priv->bands[IEEE80211_BAND_5GHZ].n_channels); |
| |
| set_bit(STATUS_GEO_CONFIGURED, &priv->status); |
| |
| return 0; |
| } |
| |
| /* |
| * iwlcore_free_geos - undo allocations in iwlcore_init_geos |
| */ |
| void iwlcore_free_geos(struct iwl_priv *priv) |
| { |
| kfree(priv->ieee_channels); |
| kfree(priv->ieee_rates); |
| clear_bit(STATUS_GEO_CONFIGURED, &priv->status); |
| } |
| |
| static bool iwl_is_channel_extension(struct iwl_priv *priv, |
| enum ieee80211_band band, |
| u16 channel, u8 extension_chan_offset) |
| { |
| const struct iwl_channel_info *ch_info; |
| |
| ch_info = iwl_get_channel_info(priv, band, channel); |
| if (!is_channel_valid(ch_info)) |
| return false; |
| |
| if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE) |
| return !(ch_info->ht40_extension_channel & |
| IEEE80211_CHAN_NO_HT40PLUS); |
| else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW) |
| return !(ch_info->ht40_extension_channel & |
| IEEE80211_CHAN_NO_HT40MINUS); |
| |
| return false; |
| } |
| |
| bool iwl_is_ht40_tx_allowed(struct iwl_priv *priv, |
| struct iwl_rxon_context *ctx, |
| struct ieee80211_sta_ht_cap *ht_cap) |
| { |
| if (!ctx->ht.enabled || !ctx->ht.is_40mhz) |
| return false; |
| |
| /* |
| * We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
| * the bit will not set if it is pure 40MHz case |
| */ |
| if (ht_cap && !ht_cap->ht_supported) |
| return false; |
| |
| #ifdef CONFIG_IWLWIFI_DEBUGFS |
| if (priv->disable_ht40) |
| return false; |
| #endif |
| |
| return iwl_is_channel_extension(priv, priv->band, |
| le16_to_cpu(ctx->staging.channel), |
| ctx->ht.extension_chan_offset); |
| } |
| |
| static u16 iwl_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val) |
| { |
| u16 new_val; |
| u16 beacon_factor; |
| |
| /* |
| * If mac80211 hasn't given us a beacon interval, program |
| * the default into the device (not checking this here |
| * would cause the adjustment below to return the maximum |
| * value, which may break PAN.) |
| */ |
| if (!beacon_val) |
| return DEFAULT_BEACON_INTERVAL; |
| |
| /* |
| * If the beacon interval we obtained from the peer |
| * is too large, we'll have to wake up more often |
| * (and in IBSS case, we'll beacon too much) |
| * |
| * For example, if max_beacon_val is 4096, and the |
| * requested beacon interval is 7000, we'll have to |
| * use 3500 to be able to wake up on the beacons. |
| * |
| * This could badly influence beacon detection stats. |
| */ |
| |
| beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val; |
| new_val = beacon_val / beacon_factor; |
| |
| if (!new_val) |
| new_val = max_beacon_val; |
| |
| return new_val; |
| } |
| |
| int iwl_send_rxon_timing(struct iwl_priv *priv, struct iwl_rxon_context *ctx) |
| { |
| u64 tsf; |
| s32 interval_tm, rem; |
| struct ieee80211_conf *conf = NULL; |
| u16 beacon_int; |
| struct ieee80211_vif *vif = ctx->vif; |
| |
| conf = ieee80211_get_hw_conf(priv->hw); |
| |
| lockdep_assert_held(&priv->mutex); |
| |
| memset(&ctx->timing, 0, sizeof(struct iwl_rxon_time_cmd)); |
| |
| ctx->timing.timestamp = cpu_to_le64(priv->timestamp); |
| ctx->timing.listen_interval = cpu_to_le16(conf->listen_interval); |
| |
| beacon_int = vif ? vif->bss_conf.beacon_int : 0; |
| |
| /* |
| * TODO: For IBSS we need to get atim_window from mac80211, |
| * for now just always use 0 |
| */ |
| ctx->timing.atim_window = 0; |
| |
| if (ctx->ctxid == IWL_RXON_CTX_PAN && |
| (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION) && |
| iwl_is_associated(priv, IWL_RXON_CTX_BSS) && |
| priv->contexts[IWL_RXON_CTX_BSS].vif && |
| priv->contexts[IWL_RXON_CTX_BSS].vif->bss_conf.beacon_int) { |
| ctx->timing.beacon_interval = |
| priv->contexts[IWL_RXON_CTX_BSS].timing.beacon_interval; |
| beacon_int = le16_to_cpu(ctx->timing.beacon_interval); |
| } else if (ctx->ctxid == IWL_RXON_CTX_BSS && |
| iwl_is_associated(priv, IWL_RXON_CTX_PAN) && |
| priv->contexts[IWL_RXON_CTX_PAN].vif && |
| priv->contexts[IWL_RXON_CTX_PAN].vif->bss_conf.beacon_int && |
| (!iwl_is_associated_ctx(ctx) || !ctx->vif || |
| !ctx->vif->bss_conf.beacon_int)) { |
| ctx->timing.beacon_interval = |
| priv->contexts[IWL_RXON_CTX_PAN].timing.beacon_interval; |
| beacon_int = le16_to_cpu(ctx->timing.beacon_interval); |
| } else { |
| beacon_int = iwl_adjust_beacon_interval(beacon_int, |
| priv->hw_params.max_beacon_itrvl * TIME_UNIT); |
| ctx->timing.beacon_interval = cpu_to_le16(beacon_int); |
| } |
| |
| tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */ |
| interval_tm = beacon_int * TIME_UNIT; |
| rem = do_div(tsf, interval_tm); |
| ctx->timing.beacon_init_val = cpu_to_le32(interval_tm - rem); |
| |
| ctx->timing.dtim_period = vif ? (vif->bss_conf.dtim_period ?: 1) : 1; |
| |
| IWL_DEBUG_ASSOC(priv, |
| "beacon interval %d beacon timer %d beacon tim %d\n", |
| le16_to_cpu(ctx->timing.beacon_interval), |
| le32_to_cpu(ctx->timing.beacon_init_val), |
| le16_to_cpu(ctx->timing.atim_window)); |
| |
| return trans_send_cmd_pdu(&priv->trans, ctx->rxon_timing_cmd, |
| CMD_SYNC, sizeof(ctx->timing), &ctx->timing); |
| } |
| |
| void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, struct iwl_rxon_context *ctx, |
| int hw_decrypt) |
| { |
| struct iwl_rxon_cmd *rxon = &ctx->staging; |
| |
| if (hw_decrypt) |
| rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK; |
| else |
| rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK; |
| |
| } |
| |
| /* validate RXON structure is valid */ |
| int iwl_check_rxon_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx) |
| { |
| struct iwl_rxon_cmd *rxon = &ctx->staging; |
| u32 errors = 0; |
| |
| if (rxon->flags & RXON_FLG_BAND_24G_MSK) { |
| if (rxon->flags & RXON_FLG_TGJ_NARROW_BAND_MSK) { |
| IWL_WARN(priv, "check 2.4G: wrong narrow\n"); |
| errors |= BIT(0); |
| } |
| if (rxon->flags & RXON_FLG_RADAR_DETECT_MSK) { |
| IWL_WARN(priv, "check 2.4G: wrong radar\n"); |
| errors |= BIT(1); |
| } |
| } else { |
| if (!(rxon->flags & RXON_FLG_SHORT_SLOT_MSK)) { |
| IWL_WARN(priv, "check 5.2G: not short slot!\n"); |
| errors |= BIT(2); |
| } |
| if (rxon->flags & RXON_FLG_CCK_MSK) { |
| IWL_WARN(priv, "check 5.2G: CCK!\n"); |
| errors |= BIT(3); |
| } |
| } |
| if ((rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1) { |
| IWL_WARN(priv, "mac/bssid mcast!\n"); |
| errors |= BIT(4); |
| } |
| |
| /* make sure basic rates 6Mbps and 1Mbps are supported */ |
| if ((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0 && |
| (rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0) { |
| IWL_WARN(priv, "neither 1 nor 6 are basic\n"); |
| errors |= BIT(5); |
| } |
| |
| if (le16_to_cpu(rxon->assoc_id) > 2007) { |
| IWL_WARN(priv, "aid > 2007\n"); |
| errors |= BIT(6); |
| } |
| |
| if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) |
| == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) { |
| IWL_WARN(priv, "CCK and short slot\n"); |
| errors |= BIT(7); |
| } |
| |
| if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)) |
| == (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 iwl_mac_channel_switch. |
| */ |
| struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; |
| |
| if (test_bit(STATUS_EXIT_PENDING, &priv->status)) |
| return; |
| |
| if (test_and_clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status)) |
| ieee80211_chswitch_done(ctx->vif, is_success); |
| } |
| |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| void iwl_print_rx_config_cmd(struct iwl_priv *priv, |
| struct iwl_rxon_context *ctx) |
| { |
| 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 |
| |
| static void iwlagn_abort_notification_waits(struct iwl_priv *priv) |
| { |
| unsigned long flags; |
| struct iwl_notification_wait *wait_entry; |
| |
| spin_lock_irqsave(&priv->notif_wait_lock, flags); |
| list_for_each_entry(wait_entry, &priv->notif_waits, list) |
| wait_entry->aborted = true; |
| spin_unlock_irqrestore(&priv->notif_wait_lock, flags); |
| |
| wake_up_all(&priv->notif_waitq); |
| } |
| |
| 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->status); |
| |
| /* Cancel currently queued command. */ |
| clear_bit(STATUS_HCMD_ACTIVE, &priv->status); |
| |
| iwlagn_abort_notification_waits(priv); |
| |
| /* Keep the restart process from trying to send host |
| * commands by clearing the ready bit */ |
| clear_bit(STATUS_READY, &priv->status); |
| |
| wake_up_interruptible(&priv->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->status)) { |
| if (iwlagn_mod_params.restart_fw) { |
| IWL_DEBUG(priv, IWL_DL_FW_ERRORS, |
| "Restarting adapter due to uCode error.\n"); |
| queue_work(priv->workqueue, &priv->restart); |
| } else |
| IWL_DEBUG(priv, IWL_DL_FW_ERRORS, |
| "Detected FW error, but not restarting\n"); |
| } |
| } |
| |
| /** |
| * iwl_irq_handle_error - called for HW or SW error interrupt from card |
| */ |
| void iwl_irq_handle_error(struct iwl_priv *priv) |
| { |
| /* W/A for WiFi/WiMAX coex and WiMAX own the RF */ |
| if (priv->cfg->internal_wimax_coex && |
| (!(iwl_read_prph(priv, APMG_CLK_CTRL_REG) & |
| APMS_CLK_VAL_MRB_FUNC_MODE) || |
| (iwl_read_prph(priv, APMG_PS_CTRL_REG) & |
| APMG_PS_CTRL_VAL_RESET_REQ))) { |
| /* |
| * Keep the restart process from trying to send host |
| * commands by clearing the ready bit. |
| */ |
| clear_bit(STATUS_READY, &priv->status); |
| clear_bit(STATUS_HCMD_ACTIVE, &priv->status); |
| wake_up_interruptible(&priv->wait_command_queue); |
| IWL_ERR(priv, "RF is used by WiMAX\n"); |
| return; |
| } |
| |
| IWL_ERR(priv, "Loaded firmware version: %s\n", |
| priv->hw->wiphy->fw_version); |
| |
| iwl_dump_nic_error_log(priv); |
| iwl_dump_csr(priv); |
| iwl_dump_fh(priv, NULL, false); |
| iwl_dump_nic_event_log(priv, false, NULL, false); |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| if (iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) |
| iwl_print_rx_config_cmd(priv, |
| &priv->contexts[IWL_RXON_CTX_BSS]); |
| #endif |
| |
| iwlagn_fw_error(priv, false); |
| } |
| |
| static int iwl_apm_stop_master(struct iwl_priv *priv) |
| { |
| int ret = 0; |
| |
| /* stop device's busmaster DMA activity */ |
| iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER); |
| |
| ret = iwl_poll_bit(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->status); |
| |
| /* Stop device's DMA activity */ |
| iwl_apm_stop_master(priv); |
| |
| /* Reset the entire device */ |
| iwl_set_bit(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(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(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(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(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(priv, CSR_HW_IF_CONFIG_REG, |
| CSR_HW_IF_CONFIG_REG_BIT_HAP_WAKE_L1A); |
| |
| bus_apm_config(priv->bus); |
| |
| /* Configure analog phase-lock-loop before activating to D0A */ |
| if (priv->cfg->base_params->pll_cfg_val) |
| iwl_set_bit(priv, CSR_ANA_PLL_CFG, |
| priv->cfg->base_params->pll_cfg_val); |
| |
| /* |
| * Set "initialization complete" bit to move adapter from |
| * D0U* --> D0A* (powered-up active) state. |
| */ |
| iwl_set_bit(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(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(priv, APMG_CLK_EN_REG, APMG_CLK_VAL_DMA_CLK_RQT); |
| udelay(20); |
| |
| /* Disable L1-Active */ |
| iwl_set_bits_prph(priv, APMG_PCIDEV_STT_REG, |
| APMG_PCIDEV_STT_VAL_L1_ACT_DIS); |
| |
| set_bit(STATUS_DEVICE_ENABLED, &priv->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->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)) |
| 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->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 (trans_send_cmd_pdu(&priv->trans, 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 trans_send_cmd_pdu(&priv->trans, REPLY_STATISTICS_CMD, |
| CMD_ASYNC, |
| sizeof(struct iwl_statistics_cmd), |
| &statistics_cmd); |
| else |
| return trans_send_cmd_pdu(&priv->trans, REPLY_STATISTICS_CMD, |
| CMD_SYNC, |
| sizeof(struct iwl_statistics_cmd), |
| &statistics_cmd); |
| } |
| |
| void iwl_clear_isr_stats(struct iwl_priv *priv) |
| { |
| memset(&priv->isr_stats, 0, sizeof(priv->isr_stats)); |
| } |
| |
| int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue, |
| const struct ieee80211_tx_queue_params *params) |
| { |
| struct iwl_priv *priv = hw->priv; |
| struct iwl_rxon_context *ctx; |
| unsigned long flags; |
| int q; |
| |
| IWL_DEBUG_MAC80211(priv, "enter\n"); |
| |
| if (!iwl_is_ready_rf(priv)) { |
| IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n"); |
| return -EIO; |
| } |
| |
| if (queue >= AC_NUM) { |
| IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue); |
| return 0; |
| } |
| |
| q = AC_NUM - 1 - queue; |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| |
| /* |
| * MULTI-FIXME |
| * This may need to be done per interface in nl80211/cfg80211/mac80211. |
| */ |
| for_each_context(priv, ctx) { |
| ctx->qos_data.def_qos_parm.ac[q].cw_min = |
| cpu_to_le16(params->cw_min); |
| ctx->qos_data.def_qos_parm.ac[q].cw_max = |
| cpu_to_le16(params->cw_max); |
| ctx->qos_data.def_qos_parm.ac[q].aifsn = params->aifs; |
| ctx->qos_data.def_qos_parm.ac[q].edca_txop = |
| cpu_to_le16((params->txop * 32)); |
| |
| ctx->qos_data.def_qos_parm.ac[q].reserved1 = 0; |
| } |
| |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| IWL_DEBUG_MAC80211(priv, "leave\n"); |
| return 0; |
| } |
| |
| int iwl_mac_tx_last_beacon(struct ieee80211_hw *hw) |
| { |
| struct iwl_priv *priv = hw->priv; |
| |
| return priv->ibss_manager == IWL_IBSS_MANAGER; |
| } |
| |
| static int iwl_set_mode(struct iwl_priv *priv, struct iwl_rxon_context *ctx) |
| { |
| iwl_connection_init_rx_config(priv, ctx); |
| |
| iwlagn_set_rxon_chain(priv, ctx); |
| |
| return iwlagn_commit_rxon(priv, ctx); |
| } |
| |
| static int iwl_setup_interface(struct iwl_priv *priv, |
| struct iwl_rxon_context *ctx) |
| { |
| struct ieee80211_vif *vif = ctx->vif; |
| int err; |
| |
| lockdep_assert_held(&priv->mutex); |
| |
| /* |
| * This variable will be correct only when there's just |
| * a single context, but all code using it is for hardware |
| * that supports only one context. |
| */ |
| priv->iw_mode = vif->type; |
| |
| ctx->is_active = true; |
| |
| err = iwl_set_mode(priv, ctx); |
| if (err) { |
| if (!ctx->always_active) |
| ctx->is_active = false; |
| return err; |
| } |
| |
| if (priv->cfg->bt_params && priv->cfg->bt_params->advanced_bt_coexist && |
| vif->type == NL80211_IFTYPE_ADHOC) { |
| /* |
| * pretend to have high BT traffic as long as we |
| * are operating in IBSS mode, as this will cause |
| * the rate scaling etc. to behave as intended. |
| */ |
| priv->bt_traffic_load = IWL_BT_COEX_TRAFFIC_LOAD_HIGH; |
| } |
| |
| return 0; |
| } |
| |
| int iwl_mac_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) |
| { |
| struct iwl_priv *priv = hw->priv; |
| struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv; |
| struct iwl_rxon_context *tmp, *ctx = NULL; |
| int err; |
| enum nl80211_iftype viftype = ieee80211_vif_type_p2p(vif); |
| |
| IWL_DEBUG_MAC80211(priv, "enter: type %d, addr %pM\n", |
| viftype, vif->addr); |
| |
| mutex_lock(&priv->mutex); |
| |
| if (!iwl_is_ready_rf(priv)) { |
| IWL_WARN(priv, "Try to add interface when device not ready\n"); |
| err = -EINVAL; |
| goto out; |
| } |
| |
| for_each_context(priv, tmp) { |
| u32 possible_modes = |
| tmp->interface_modes | tmp->exclusive_interface_modes; |
| |
| if (tmp->vif) { |
| /* check if this busy context is exclusive */ |
| if (tmp->exclusive_interface_modes & |
| BIT(tmp->vif->type)) { |
| err = -EINVAL; |
| goto out; |
| } |
| continue; |
| } |
| |
| if (!(possible_modes & BIT(viftype))) |
| continue; |
| |
| /* have maybe usable context w/o interface */ |
| ctx = tmp; |
| break; |
| } |
| |
| if (!ctx) { |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| vif_priv->ctx = ctx; |
| ctx->vif = vif; |
| |
| err = iwl_setup_interface(priv, ctx); |
| if (!err) |
| goto out; |
| |
| ctx->vif = NULL; |
| priv->iw_mode = NL80211_IFTYPE_STATION; |
| out: |
| mutex_unlock(&priv->mutex); |
| |
| IWL_DEBUG_MAC80211(priv, "leave\n"); |
| return err; |
| } |
| |
| static void iwl_teardown_interface(struct iwl_priv *priv, |
| struct ieee80211_vif *vif, |
| bool mode_change) |
| { |
| struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif); |
| |
| lockdep_assert_held(&priv->mutex); |
| |
| if (priv->scan_vif == vif) { |
| iwl_scan_cancel_timeout(priv, 200); |
| iwl_force_scan_end(priv); |
| } |
| |
| if (!mode_change) { |
| iwl_set_mode(priv, ctx); |
| if (!ctx->always_active) |
| ctx->is_active = false; |
| } |
| |
| /* |
| * When removing the IBSS interface, overwrite the |
| * BT traffic load with the stored one from the last |
| * notification, if any. If this is a device that |
| * doesn't implement this, this has no effect since |
| * both values are the same and zero. |
| */ |
| if (vif->type == NL80211_IFTYPE_ADHOC) |
| priv->bt_traffic_load = priv->last_bt_traffic_load; |
| } |
| |
| void iwl_mac_remove_interface(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif) |
| { |
| struct iwl_priv *priv = hw->priv; |
| struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif); |
| |
| IWL_DEBUG_MAC80211(priv, "enter\n"); |
| |
| mutex_lock(&priv->mutex); |
| |
| WARN_ON(ctx->vif != vif); |
| ctx->vif = NULL; |
| |
| iwl_teardown_interface(priv, vif, false); |
| |
| mutex_unlock(&priv->mutex); |
| |
| IWL_DEBUG_MAC80211(priv, "leave\n"); |
| |
| } |
| |
| #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_debug_level & IWL_DL_TX) { |
| if (!priv->tx_traffic) { |
| priv->tx_traffic = |
| kzalloc(traffic_size, GFP_KERNEL); |
| if (!priv->tx_traffic) |
| return -ENOMEM; |
| } |
| } |
| if (iwl_debug_level & 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_debug_level & 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_debug_level & 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->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->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_mac_change_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
| enum nl80211_iftype newtype, bool newp2p) |
| { |
| struct iwl_priv *priv = hw->priv; |
| struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif); |
| struct iwl_rxon_context *bss_ctx = &priv->contexts[IWL_RXON_CTX_BSS]; |
| struct iwl_rxon_context *tmp; |
| enum nl80211_iftype newviftype = newtype; |
| u32 interface_modes; |
| int err; |
| |
| newtype = ieee80211_iftype_p2p(newtype, newp2p); |
| |
| mutex_lock(&priv->mutex); |
| |
| if (!ctx->vif || !iwl_is_ready_rf(priv)) { |
| /* |
| * Huh? But wait ... this can maybe happen when |
| * we're in the middle of a firmware restart! |
| */ |
| err = -EBUSY; |
| goto out; |
| } |
| |
| interface_modes = ctx->interface_modes | ctx->exclusive_interface_modes; |
| |
| if (!(interface_modes & BIT(newtype))) { |
| err = -EBUSY; |
| goto out; |
| } |
| |
| /* |
| * Refuse a change that should be done by moving from the PAN |
| * context to the BSS context instead, if the BSS context is |
| * available and can support the new interface type. |
| */ |
| if (ctx->ctxid == IWL_RXON_CTX_PAN && !bss_ctx->vif && |
| (bss_ctx->interface_modes & BIT(newtype) || |
| bss_ctx->exclusive_interface_modes & BIT(newtype))) { |
| BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2); |
| err = -EBUSY; |
| goto out; |
| } |
| |
| if (ctx->exclusive_interface_modes & BIT(newtype)) { |
| for_each_context(priv, tmp) { |
| if (ctx == tmp) |
| continue; |
| |
| if (!tmp->vif) |
| continue; |
| |
| /* |
| * The current mode switch would be exclusive, but |
| * another context is active ... refuse the switch. |
| */ |
| err = -EBUSY; |
| goto out; |
| } |
| } |
| |
| /* success */ |
| iwl_teardown_interface(priv, vif, true); |
| vif->type = newviftype; |
| vif->p2p = newp2p; |
| err = iwl_setup_interface(priv, ctx); |
| WARN_ON(err); |
| /* |
| * We've switched internally, but submitting to the |
| * device may have failed for some reason. Mask this |
| * error, because otherwise mac80211 will not switch |
| * (and set the interface type back) and we'll be |
| * out of sync with it. |
| */ |
| err = 0; |
| |
| out: |
| mutex_unlock(&priv->mutex); |
| return err; |
| } |
| |
| /* |
| * On every watchdog tick we check (latest) time stamp. If it does not |
| * change during timeout period and queue is not empty we reset firmware. |
| */ |
| static int iwl_check_stuck_queue(struct iwl_priv *priv, int cnt) |
| { |
| struct iwl_tx_queue *txq = &priv->txq[cnt]; |
| struct iwl_queue *q = &txq->q; |
| unsigned long timeout; |
| int ret; |
| |
| if (q->read_ptr == q->write_ptr) { |
| txq->time_stamp = jiffies; |
| return 0; |
| } |
| |
| timeout = txq->time_stamp + |
| msecs_to_jiffies(priv->cfg->base_params->wd_timeout); |
| |
| if (time_after(jiffies, timeout)) { |
| IWL_ERR(priv, "Queue %d stuck for %u ms.\n", |
| q->id, priv->cfg->base_params->wd_timeout); |
| 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->status)) |
| return; |
| |
| timeout = priv->cfg->base_params->wd_timeout; |
| if (timeout == 0) |
| return; |
| |
| /* monitor and check for stuck cmd queue */ |
| if (iwl_check_stuck_queue(priv, priv->cmd_queue)) |
| return; |
| |
| /* monitor and check for other stuck queues */ |
| if (iwl_is_any_associated(priv)) { |
| for (cnt = 0; cnt < priv->hw_params.max_txq_num; cnt++) { |
| /* skip as we already checked the command queue */ |
| if (cnt == priv->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 = priv->cfg->base_params->wd_timeout; |
| |
| if (timeout && !iwlagn_mod_params.wd_disable) |
| mod_timer(&priv->watchdog, |
| jiffies + msecs_to_jiffies(IWL_WD_TICK(timeout))); |
| else |
| del_timer(&priv->watchdog); |
| } |
| |
| /* |
| * 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, |
| priv->hw_params.beacon_time_tsf_bits) >> |
| priv->hw_params.beacon_time_tsf_bits); |
| rem = (usec % interval) & iwl_beacon_time_mask_low(priv, |
| priv->hw_params.beacon_time_tsf_bits); |
| |
| return (quot << priv->hw_params.beacon_time_tsf_bits) + 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, |
| priv->hw_params.beacon_time_tsf_bits); |
| u32 addon_low = addon & iwl_beacon_time_mask_low(priv, |
| priv->hw_params.beacon_time_tsf_bits); |
| u32 interval = beacon_interval * TIME_UNIT; |
| u32 res = (base & iwl_beacon_time_mask_high(priv, |
| priv->hw_params.beacon_time_tsf_bits)) + |
| (addon & iwl_beacon_time_mask_high(priv, |
| priv->hw_params.beacon_time_tsf_bits)); |
| |
| if (base_low > addon_low) |
| res += base_low - addon_low; |
| else if (base_low < addon_low) { |
| res += interval + base_low - addon_low; |
| res += (1 << priv->hw_params.beacon_time_tsf_bits); |
| } else |
| res += (1 << priv->hw_params.beacon_time_tsf_bits); |
| |
| return cpu_to_le32(res); |
| } |
| |
| #ifdef CONFIG_PM |
| |
| int iwl_suspend(struct iwl_priv *priv) |
| { |
| /* |
| * This function is called when system goes into suspend state |
| * mac80211 will call iwl_mac_stop() from the mac80211 suspend function |
| * first but since iwl_mac_stop() has no knowledge of who the caller is, |
| * it will not call apm_ops.stop() to stop the DMA operation. |
| * Calling apm_ops.stop here to make sure we stop the DMA. |
| */ |
| iwl_apm_stop(priv); |
| |
| return 0; |
| } |
| |
| int iwl_resume(struct iwl_priv *priv) |
| { |
| bool hw_rfkill = false; |
| |
| iwl_enable_interrupts(priv); |
| |
| if (!(iwl_read32(priv, CSR_GP_CNTRL) & |
| CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)) |
| hw_rfkill = true; |
| |
| if (hw_rfkill) |
| set_bit(STATUS_RF_KILL_HW, &priv->status); |
| else |
| clear_bit(STATUS_RF_KILL_HW, &priv->status); |
| |
| wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rfkill); |
| |
| return 0; |
| } |
| |
| #endif /* CONFIG_PM */ |