| /****************************************************************************** |
| * |
| * 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" |
| #include "iwl-debug.h" |
| #include "iwl-core.h" |
| #include "iwl-io.h" |
| #include "iwl-power.h" |
| #include "iwl-sta.h" |
| #include "iwl-helpers.h" |
| |
| |
| MODULE_DESCRIPTION("iwl-legacy: common functions for 3945 and 4965"); |
| MODULE_VERSION(IWLWIFI_VERSION); |
| MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR); |
| MODULE_LICENSE("GPL"); |
| |
| /* |
| * set bt_coex_active to true, uCode will do kill/defer |
| * every time the priority line is asserted (BT is sending signals on the |
| * priority line in the PCIx). |
| * set bt_coex_active to false, uCode will ignore the BT activity and |
| * perform the normal operation |
| * |
| * User might experience transmit issue on some platform due to WiFi/BT |
| * co-exist problem. The possible behaviors are: |
| * Able to scan and finding all the available AP |
| * Not able to associate with any AP |
| * On those platforms, WiFi communication can be restored by set |
| * "bt_coex_active" module parameter to "false" |
| * |
| * default: bt_coex_active = true (BT_COEX_ENABLE) |
| */ |
| static bool bt_coex_active = true; |
| module_param(bt_coex_active, bool, S_IRUGO); |
| MODULE_PARM_DESC(bt_coex_active, "enable wifi/bluetooth co-exist"); |
| |
| u32 iwlegacy_debug_level; |
| EXPORT_SYMBOL(iwlegacy_debug_level); |
| |
| const u8 iwlegacy_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; |
| EXPORT_SYMBOL(iwlegacy_bcast_addr); |
| |
| |
| /* This function both allocates and initializes hw and priv. */ |
| struct ieee80211_hw *iwl_legacy_alloc_all(struct iwl_cfg *cfg) |
| { |
| struct iwl_priv *priv; |
| /* mac80211 allocates memory for this device instance, including |
| * space for this driver's private structure */ |
| struct ieee80211_hw *hw; |
| |
| hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), |
| cfg->ops->ieee80211_ops); |
| if (hw == NULL) { |
| pr_err("%s: Can not allocate network device\n", |
| cfg->name); |
| goto out; |
| } |
| |
| priv = hw->priv; |
| priv->hw = hw; |
| |
| out: |
| return hw; |
| } |
| EXPORT_SYMBOL(iwl_legacy_alloc_all); |
| |
| #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */ |
| #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */ |
| static void iwl_legacy_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; |
| |
| 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 (priv->cfg->mod_params->amsdu_size_8K) |
| ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU; |
| |
| ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF; |
| ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF; |
| |
| 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); |
| } |
| } |
| |
| /** |
| * iwl_legacy_init_geos - Initialize mac80211's geo/channel info based from eeprom |
| */ |
| int iwl_legacy_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 = 0; |
| |
| 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(iwlegacy_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 & IWL_SKU_N) |
| iwl_legacy_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 & IWL_SKU_N) |
| iwl_legacy_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]; |
| |
| if (!iwl_legacy_is_channel_valid(ch)) |
| continue; |
| |
| if (iwl_legacy_is_channel_a_band(ch)) |
| sband = &priv->bands[IEEE80211_BAND_5GHZ]; |
| else |
| sband = &priv->bands[IEEE80211_BAND_2GHZ]; |
| |
| 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 (iwl_legacy_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, |
| iwl_legacy_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 & IWL_SKU_A) { |
| IWL_INFO(priv, "Incorrectly detected BG card as ABG. " |
| "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n", |
| priv->pci_dev->device, |
| priv->pci_dev->subsystem_device); |
| priv->cfg->sku &= ~IWL_SKU_A; |
| } |
| |
| 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; |
| } |
| EXPORT_SYMBOL(iwl_legacy_init_geos); |
| |
| /* |
| * iwl_legacy_free_geos - undo allocations in iwl_legacy_init_geos |
| */ |
| void iwl_legacy_free_geos(struct iwl_priv *priv) |
| { |
| kfree(priv->ieee_channels); |
| kfree(priv->ieee_rates); |
| clear_bit(STATUS_GEO_CONFIGURED, &priv->status); |
| } |
| EXPORT_SYMBOL(iwl_legacy_free_geos); |
| |
| static bool iwl_legacy_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_legacy_get_channel_info(priv, band, channel); |
| if (!iwl_legacy_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_legacy_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_LEGACY_DEBUGFS |
| if (priv->disable_ht40) |
| return false; |
| #endif |
| |
| return iwl_legacy_is_channel_extension(priv, priv->band, |
| le16_to_cpu(ctx->staging.channel), |
| ctx->ht.extension_chan_offset); |
| } |
| EXPORT_SYMBOL(iwl_legacy_is_ht40_tx_allowed); |
| |
| static u16 iwl_legacy_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. |
| */ |
| 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_legacy_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 = iwl_legacy_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; |
| |
| beacon_int = iwl_legacy_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 iwl_legacy_send_cmd_pdu(priv, ctx->rxon_timing_cmd, |
| sizeof(ctx->timing), &ctx->timing); |
| } |
| EXPORT_SYMBOL(iwl_legacy_send_rxon_timing); |
| |
| void |
| iwl_legacy_set_rxon_hwcrypto(struct iwl_priv *priv, |
| struct iwl_rxon_context *ctx, |
| int hw_decrypt) |
| { |
| struct iwl_legacy_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; |
| |
| } |
| EXPORT_SYMBOL(iwl_legacy_set_rxon_hwcrypto); |
| |
| /* validate RXON structure is valid */ |
| int |
| iwl_legacy_check_rxon_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx) |
| { |
| struct iwl_legacy_rxon_cmd *rxon = &ctx->staging; |
| bool error = false; |
| |
| 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"); |
| error = true; |
| } |
| if (rxon->flags & RXON_FLG_RADAR_DETECT_MSK) { |
| IWL_WARN(priv, "check 2.4G: wrong radar\n"); |
| error = true; |
| } |
| } else { |
| if (!(rxon->flags & RXON_FLG_SHORT_SLOT_MSK)) { |
| IWL_WARN(priv, "check 5.2G: not short slot!\n"); |
| error = true; |
| } |
| if (rxon->flags & RXON_FLG_CCK_MSK) { |
| IWL_WARN(priv, "check 5.2G: CCK!\n"); |
| error = true; |
| } |
| } |
| if ((rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1) { |
| IWL_WARN(priv, "mac/bssid mcast!\n"); |
| error = true; |
| } |
| |
| /* 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"); |
| error = true; |
| } |
| |
| if (le16_to_cpu(rxon->assoc_id) > 2007) { |
| IWL_WARN(priv, "aid > 2007\n"); |
| error = true; |
| } |
| |
| 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"); |
| error = true; |
| } |
| |
| 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"); |
| error = true; |
| } |
| |
| 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"); |
| error = true; |
| } |
| |
| if (error) |
| IWL_WARN(priv, "Tuning to channel %d\n", |
| le16_to_cpu(rxon->channel)); |
| |
| if (error) { |
| IWL_ERR(priv, "Invalid RXON\n"); |
| return -EINVAL; |
| } |
| return 0; |
| } |
| EXPORT_SYMBOL(iwl_legacy_check_rxon_cmd); |
| |
| /** |
| * iwl_legacy_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_legacy_full_rxon_required(struct iwl_priv *priv, |
| struct iwl_rxon_context *ctx) |
| { |
| const struct iwl_legacy_rxon_cmd *staging = &ctx->staging; |
| const struct iwl_legacy_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_legacy_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->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; |
| } |
| EXPORT_SYMBOL(iwl_legacy_full_rxon_required); |
| |
| u8 iwl_legacy_get_lowest_plcp(struct iwl_priv *priv, |
| struct iwl_rxon_context *ctx) |
| { |
| /* |
| * Assign the lowest rate -- should really get this from |
| * the beacon skb from mac80211. |
| */ |
| if (ctx->staging.flags & RXON_FLG_BAND_24G_MSK) |
| return IWL_RATE_1M_PLCP; |
| else |
| return IWL_RATE_6M_PLCP; |
| } |
| EXPORT_SYMBOL(iwl_legacy_get_lowest_plcp); |
| |
| static void _iwl_legacy_set_rxon_ht(struct iwl_priv *priv, |
| struct iwl_ht_config *ht_conf, |
| struct iwl_rxon_context *ctx) |
| { |
| struct iwl_legacy_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; |
| } |
| |
| 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_legacy_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; |
| } |
| |
| if (priv->cfg->ops->hcmd->set_rxon_chain) |
| priv->cfg->ops->hcmd->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_legacy_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_config *ht_conf) |
| { |
| struct iwl_rxon_context *ctx; |
| |
| for_each_context(priv, ctx) |
| _iwl_legacy_set_rxon_ht(priv, ht_conf, ctx); |
| } |
| EXPORT_SYMBOL(iwl_legacy_set_rxon_ht); |
| |
| /* Return valid, unused, channel for a passive scan to reset the RF */ |
| u8 iwl_legacy_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_legacy_get_channel_info(priv, band, channel); |
| if (iwl_legacy_is_channel_valid(ch_info)) |
| break; |
| } |
| |
| return channel; |
| } |
| EXPORT_SYMBOL(iwl_legacy_get_single_channel_number); |
| |
| /** |
| * iwl_legacy_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_legacy_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; |
| } |
| EXPORT_SYMBOL(iwl_legacy_set_rxon_channel); |
| |
| void iwl_legacy_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; |
| } |
| } |
| EXPORT_SYMBOL(iwl_legacy_set_flags_for_band); |
| |
| /* |
| * initialize rxon structure with default values from eeprom |
| */ |
| void iwl_legacy_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_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_legacy_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_legacy_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; |
| } |
| EXPORT_SYMBOL(iwl_legacy_connection_init_rx_config); |
| |
| void iwl_legacy_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; |
| } |
| } |
| EXPORT_SYMBOL(iwl_legacy_set_rate); |
| |
| void iwl_legacy_chswitch_done(struct iwl_priv *priv, bool is_success) |
| { |
| struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; |
| |
| if (test_bit(STATUS_EXIT_PENDING, &priv->status)) |
| return; |
| |
| if (priv->switch_rxon.switch_in_progress) { |
| ieee80211_chswitch_done(ctx->vif, is_success); |
| mutex_lock(&priv->mutex); |
| priv->switch_rxon.switch_in_progress = false; |
| mutex_unlock(&priv->mutex); |
| } |
| } |
| EXPORT_SYMBOL(iwl_legacy_chswitch_done); |
| |
| void iwl_legacy_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb) |
| { |
| struct iwl_rx_packet *pkt = rxb_addr(rxb); |
| struct iwl_csa_notification *csa = &(pkt->u.csa_notif); |
| |
| struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; |
| struct iwl_legacy_rxon_cmd *rxon = (void *)&ctx->active; |
| |
| if (priv->switch_rxon.switch_in_progress) { |
| if (!le32_to_cpu(csa->status) && |
| (csa->channel == priv->switch_rxon.channel)) { |
| rxon->channel = csa->channel; |
| ctx->staging.channel = csa->channel; |
| IWL_DEBUG_11H(priv, "CSA notif: channel %d\n", |
| le16_to_cpu(csa->channel)); |
| iwl_legacy_chswitch_done(priv, true); |
| } else { |
| IWL_ERR(priv, "CSA notif (fail) : channel %d\n", |
| le16_to_cpu(csa->channel)); |
| iwl_legacy_chswitch_done(priv, false); |
| } |
| } |
| } |
| EXPORT_SYMBOL(iwl_legacy_rx_csa); |
| |
| #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG |
| void iwl_legacy_print_rx_config_cmd(struct iwl_priv *priv, |
| struct iwl_rxon_context *ctx) |
| { |
| struct iwl_legacy_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)); |
| } |
| EXPORT_SYMBOL(iwl_legacy_print_rx_config_cmd); |
| #endif |
| /** |
| * iwl_legacy_irq_handle_error - called for HW or SW error interrupt from card |
| */ |
| void iwl_legacy_irq_handle_error(struct iwl_priv *priv) |
| { |
| /* 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); |
| |
| IWL_ERR(priv, "Loaded firmware version: %s\n", |
| priv->hw->wiphy->fw_version); |
| |
| priv->cfg->ops->lib->dump_nic_error_log(priv); |
| if (priv->cfg->ops->lib->dump_fh) |
| priv->cfg->ops->lib->dump_fh(priv, NULL, false); |
| priv->cfg->ops->lib->dump_nic_event_log(priv, false, NULL, false); |
| #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG |
| if (iwl_legacy_get_debug_level(priv) & IWL_DL_FW_ERRORS) |
| iwl_legacy_print_rx_config_cmd(priv, |
| &priv->contexts[IWL_RXON_CTX_BSS]); |
| #endif |
| |
| wake_up_interruptible(&priv->wait_command_queue); |
| |
| /* Keep the restart process from trying to send host |
| * commands by clearing the INIT status bit */ |
| clear_bit(STATUS_READY, &priv->status); |
| |
| if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) { |
| IWL_DEBUG(priv, IWL_DL_FW_ERRORS, |
| "Restarting adapter due to uCode error.\n"); |
| |
| if (priv->cfg->mod_params->restart_fw) |
| queue_work(priv->workqueue, &priv->restart); |
| } |
| } |
| EXPORT_SYMBOL(iwl_legacy_irq_handle_error); |
| |
| static int iwl_legacy_apm_stop_master(struct iwl_priv *priv) |
| { |
| int ret = 0; |
| |
| /* stop device's busmaster DMA activity */ |
| iwl_legacy_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_legacy_apm_stop(struct iwl_priv *priv) |
| { |
| IWL_DEBUG_INFO(priv, "Stop card, put in low power state\n"); |
| |
| /* Stop device's DMA activity */ |
| iwl_legacy_apm_stop_master(priv); |
| |
| /* Reset the entire device */ |
| iwl_legacy_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_legacy_clear_bit(priv, CSR_GP_CNTRL, |
| CSR_GP_CNTRL_REG_FLAG_INIT_DONE); |
| } |
| EXPORT_SYMBOL(iwl_legacy_apm_stop); |
| |
| |
| /* |
| * Start up NIC's basic functionality after it has been reset |
| * (e.g. after platform boot, or shutdown via iwl_legacy_apm_stop()) |
| * NOTE: This does not load uCode nor start the embedded processor |
| */ |
| int iwl_legacy_apm_init(struct iwl_priv *priv) |
| { |
| int ret = 0; |
| u16 lctl; |
| |
| 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_legacy_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_legacy_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_legacy_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 |
| * NOTE: This is no-op for 3945 (non-existant bit) |
| */ |
| iwl_legacy_set_bit(priv, CSR_HW_IF_CONFIG_REG, |
| CSR_HW_IF_CONFIG_REG_BIT_HAP_WAKE_L1A); |
| |
| /* |
| * HW bug W/A for instability in PCIe bus L0->L0S->L1 transition. |
| * Check if BIOS (or OS) enabled L1-ASPM on this device. |
| * If so (likely), disable L0S, so device moves directly L0->L1; |
| * costs negligible amount of power savings. |
| * If not (unlikely), enable L0S, so there is at least some |
| * power savings, even without L1. |
| */ |
| if (priv->cfg->base_params->set_l0s) { |
| lctl = iwl_legacy_pcie_link_ctl(priv); |
| if ((lctl & PCI_CFG_LINK_CTRL_VAL_L1_EN) == |
| PCI_CFG_LINK_CTRL_VAL_L1_EN) { |
| /* L1-ASPM enabled; disable(!) L0S */ |
| iwl_legacy_set_bit(priv, CSR_GIO_REG, |
| CSR_GIO_REG_VAL_L0S_ENABLED); |
| IWL_DEBUG_POWER(priv, "L1 Enabled; Disabling L0S\n"); |
| } else { |
| /* L1-ASPM disabled; enable(!) L0S */ |
| iwl_legacy_clear_bit(priv, CSR_GIO_REG, |
| CSR_GIO_REG_VAL_L0S_ENABLED); |
| IWL_DEBUG_POWER(priv, "L1 Disabled; Enabling L0S\n"); |
| } |
| } |
| |
| /* Configure analog phase-lock-loop before activating to D0A */ |
| if (priv->cfg->base_params->pll_cfg_val) |
| iwl_legacy_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_legacy_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_legacy_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 and BSM (if used) clocks, wait for them to stabilize. |
| * BSM (Boostrap State Machine) is only in 3945 and 4965. |
| * |
| * 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. |
| */ |
| if (priv->cfg->base_params->use_bsm) |
| iwl_legacy_write_prph(priv, APMG_CLK_EN_REG, |
| APMG_CLK_VAL_DMA_CLK_RQT | APMG_CLK_VAL_BSM_CLK_RQT); |
| else |
| iwl_legacy_write_prph(priv, APMG_CLK_EN_REG, |
| APMG_CLK_VAL_DMA_CLK_RQT); |
| udelay(20); |
| |
| /* Disable L1-Active */ |
| iwl_legacy_set_bits_prph(priv, APMG_PCIDEV_STT_REG, |
| APMG_PCIDEV_STT_VAL_L1_ACT_DIS); |
| |
| out: |
| return ret; |
| } |
| EXPORT_SYMBOL(iwl_legacy_apm_init); |
| |
| |
| int iwl_legacy_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 (!priv->cfg->ops->lib->send_tx_power) |
| return -EOPNOTSUPP; |
| |
| /* 0 dBm mean 1 milliwatt */ |
| if (tx_power < 0) { |
| IWL_WARN(priv, |
| "Requested user TXPOWER %d below 1 mW.\n", |
| tx_power); |
| 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_legacy_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 = priv->cfg->ops->lib->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; |
| } |
| EXPORT_SYMBOL(iwl_legacy_set_tx_power); |
| |
| void iwl_legacy_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 (!bt_coex_active) |
| bt_cmd.flags = BT_COEX_DISABLE; |
| else |
| bt_cmd.flags = BT_COEX_ENABLE; |
| |
| IWL_DEBUG_INFO(priv, "BT coex %s\n", |
| (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active"); |
| |
| if (iwl_legacy_send_cmd_pdu(priv, REPLY_BT_CONFIG, |
| sizeof(struct iwl_bt_cmd), &bt_cmd)) |
| IWL_ERR(priv, "failed to send BT Coex Config\n"); |
| } |
| EXPORT_SYMBOL(iwl_legacy_send_bt_config); |
| |
| int iwl_legacy_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_legacy_send_cmd_pdu_async(priv, REPLY_STATISTICS_CMD, |
| sizeof(struct iwl_statistics_cmd), |
| &statistics_cmd, NULL); |
| else |
| return iwl_legacy_send_cmd_pdu(priv, REPLY_STATISTICS_CMD, |
| sizeof(struct iwl_statistics_cmd), |
| &statistics_cmd); |
| } |
| EXPORT_SYMBOL(iwl_legacy_send_statistics_request); |
| |
| void iwl_legacy_rx_pm_sleep_notif(struct iwl_priv *priv, |
| struct iwl_rx_mem_buffer *rxb) |
| { |
| #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG |
| struct iwl_rx_packet *pkt = rxb_addr(rxb); |
| struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif); |
| IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n", |
| sleep->pm_sleep_mode, sleep->pm_wakeup_src); |
| #endif |
| } |
| EXPORT_SYMBOL(iwl_legacy_rx_pm_sleep_notif); |
| |
| void iwl_legacy_rx_pm_debug_statistics_notif(struct iwl_priv *priv, |
| struct iwl_rx_mem_buffer *rxb) |
| { |
| struct iwl_rx_packet *pkt = rxb_addr(rxb); |
| u32 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK; |
| IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled " |
| "notification for %s:\n", len, |
| iwl_legacy_get_cmd_string(pkt->hdr.cmd)); |
| iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, len); |
| } |
| EXPORT_SYMBOL(iwl_legacy_rx_pm_debug_statistics_notif); |
| |
| void iwl_legacy_rx_reply_error(struct iwl_priv *priv, |
| struct iwl_rx_mem_buffer *rxb) |
| { |
| struct iwl_rx_packet *pkt = rxb_addr(rxb); |
| |
| IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) " |
| "seq 0x%04X ser 0x%08X\n", |
| le32_to_cpu(pkt->u.err_resp.error_type), |
| iwl_legacy_get_cmd_string(pkt->u.err_resp.cmd_id), |
| pkt->u.err_resp.cmd_id, |
| le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num), |
| le32_to_cpu(pkt->u.err_resp.error_info)); |
| } |
| EXPORT_SYMBOL(iwl_legacy_rx_reply_error); |
| |
| void iwl_legacy_clear_isr_stats(struct iwl_priv *priv) |
| { |
| memset(&priv->isr_stats, 0, sizeof(priv->isr_stats)); |
| } |
| |
| int iwl_legacy_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_legacy_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); |
| |
| 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; |
| } |
| EXPORT_SYMBOL(iwl_legacy_mac_conf_tx); |
| |
| int iwl_legacy_mac_tx_last_beacon(struct ieee80211_hw *hw) |
| { |
| struct iwl_priv *priv = hw->priv; |
| |
| return priv->ibss_manager == IWL_IBSS_MANAGER; |
| } |
| EXPORT_SYMBOL_GPL(iwl_legacy_mac_tx_last_beacon); |
| |
| static int |
| iwl_legacy_set_mode(struct iwl_priv *priv, struct iwl_rxon_context *ctx) |
| { |
| iwl_legacy_connection_init_rx_config(priv, ctx); |
| |
| if (priv->cfg->ops->hcmd->set_rxon_chain) |
| priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx); |
| |
| return iwl_legacy_commit_rxon(priv, ctx); |
| } |
| |
| static int iwl_legacy_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_legacy_set_mode(priv, ctx); |
| if (err) { |
| if (!ctx->always_active) |
| ctx->is_active = false; |
| return err; |
| } |
| |
| return 0; |
| } |
| |
| int |
| iwl_legacy_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; |
| |
| IWL_DEBUG_MAC80211(priv, "enter: type %d, addr %pM\n", |
| vif->type, vif->addr); |
| |
| mutex_lock(&priv->mutex); |
| |
| if (!iwl_legacy_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(vif->type))) |
| 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_legacy_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; |
| } |
| EXPORT_SYMBOL(iwl_legacy_mac_add_interface); |
| |
| static void iwl_legacy_teardown_interface(struct iwl_priv *priv, |
| struct ieee80211_vif *vif, |
| bool mode_change) |
| { |
| struct iwl_rxon_context *ctx = iwl_legacy_rxon_ctx_from_vif(vif); |
| |
| lockdep_assert_held(&priv->mutex); |
| |
| if (priv->scan_vif == vif) { |
| iwl_legacy_scan_cancel_timeout(priv, 200); |
| iwl_legacy_force_scan_end(priv); |
| } |
| |
| if (!mode_change) { |
| iwl_legacy_set_mode(priv, ctx); |
| if (!ctx->always_active) |
| ctx->is_active = false; |
| } |
| } |
| |
| void iwl_legacy_mac_remove_interface(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif) |
| { |
| struct iwl_priv *priv = hw->priv; |
| struct iwl_rxon_context *ctx = iwl_legacy_rxon_ctx_from_vif(vif); |
| |
| IWL_DEBUG_MAC80211(priv, "enter\n"); |
| |
| mutex_lock(&priv->mutex); |
| |
| WARN_ON(ctx->vif != vif); |
| ctx->vif = NULL; |
| |
| iwl_legacy_teardown_interface(priv, vif, false); |
| |
| memset(priv->bssid, 0, ETH_ALEN); |
| mutex_unlock(&priv->mutex); |
| |
| IWL_DEBUG_MAC80211(priv, "leave\n"); |
| |
| } |
| EXPORT_SYMBOL(iwl_legacy_mac_remove_interface); |
| |
| int iwl_legacy_alloc_txq_mem(struct iwl_priv *priv) |
| { |
| if (!priv->txq) |
| priv->txq = kzalloc( |
| sizeof(struct iwl_tx_queue) * |
| priv->cfg->base_params->num_of_queues, |
| GFP_KERNEL); |
| if (!priv->txq) { |
| IWL_ERR(priv, "Not enough memory for txq\n"); |
| return -ENOMEM; |
| } |
| return 0; |
| } |
| EXPORT_SYMBOL(iwl_legacy_alloc_txq_mem); |
| |
| void iwl_legacy_txq_mem(struct iwl_priv *priv) |
| { |
| kfree(priv->txq); |
| priv->txq = NULL; |
| } |
| EXPORT_SYMBOL(iwl_legacy_txq_mem); |
| |
| #ifdef CONFIG_IWLWIFI_LEGACY_DEBUGFS |
| |
| #define IWL_TRAFFIC_DUMP_SIZE (IWL_TRAFFIC_ENTRY_SIZE * IWL_TRAFFIC_ENTRIES) |
| |
| void iwl_legacy_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_legacy_alloc_traffic_mem(struct iwl_priv *priv) |
| { |
| u32 traffic_size = IWL_TRAFFIC_DUMP_SIZE; |
| |
| if (iwlegacy_debug_level & IWL_DL_TX) { |
| if (!priv->tx_traffic) { |
| priv->tx_traffic = |
| kzalloc(traffic_size, GFP_KERNEL); |
| if (!priv->tx_traffic) |
| return -ENOMEM; |
| } |
| } |
| if (iwlegacy_debug_level & IWL_DL_RX) { |
| if (!priv->rx_traffic) { |
| priv->rx_traffic = |
| kzalloc(traffic_size, GFP_KERNEL); |
| if (!priv->rx_traffic) |
| return -ENOMEM; |
| } |
| } |
| iwl_legacy_reset_traffic_log(priv); |
| return 0; |
| } |
| EXPORT_SYMBOL(iwl_legacy_alloc_traffic_mem); |
| |
| void iwl_legacy_free_traffic_mem(struct iwl_priv *priv) |
| { |
| kfree(priv->tx_traffic); |
| priv->tx_traffic = NULL; |
| |
| kfree(priv->rx_traffic); |
| priv->rx_traffic = NULL; |
| } |
| EXPORT_SYMBOL(iwl_legacy_free_traffic_mem); |
| |
| void iwl_legacy_dbg_log_tx_data_frame(struct iwl_priv *priv, |
| u16 length, struct ieee80211_hdr *header) |
| { |
| __le16 fc; |
| u16 len; |
| |
| if (likely(!(iwlegacy_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; |
| } |
| } |
| EXPORT_SYMBOL(iwl_legacy_dbg_log_tx_data_frame); |
| |
| void iwl_legacy_dbg_log_rx_data_frame(struct iwl_priv *priv, |
| u16 length, struct ieee80211_hdr *header) |
| { |
| __le16 fc; |
| u16 len; |
| |
| if (likely(!(iwlegacy_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; |
| } |
| } |
| EXPORT_SYMBOL(iwl_legacy_dbg_log_rx_data_frame); |
| |
| const char *iwl_legacy_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 *iwl_legacy_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_legacy_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_LEGACY_DEBUGFS defined, |
| * iwl_legacy_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_LEGACY_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_legacy_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; |
| } |
| } |
| EXPORT_SYMBOL(iwl_legacy_update_stats); |
| #endif |
| |
| static void _iwl_legacy_force_rf_reset(struct iwl_priv *priv) |
| { |
| if (test_bit(STATUS_EXIT_PENDING, &priv->status)) |
| return; |
| |
| if (!iwl_legacy_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_legacy_internal_short_hw_scan(priv); |
| } |
| |
| |
| int iwl_legacy_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_legacy_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 && !priv->cfg->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"); |
| /* Set the FW error flag -- cleared on iwl_down */ |
| set_bit(STATUS_FW_ERROR, &priv->status); |
| wake_up_interruptible(&priv->wait_command_queue); |
| /* |
| * Keep the restart process from trying to send host |
| * commands by clearing the INIT status bit |
| */ |
| clear_bit(STATUS_READY, &priv->status); |
| queue_work(priv->workqueue, &priv->restart); |
| break; |
| } |
| return 0; |
| } |
| |
| int |
| iwl_legacy_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_legacy_rxon_ctx_from_vif(vif); |
| struct iwl_rxon_context *tmp; |
| u32 interface_modes; |
| int err; |
| |
| newtype = ieee80211_iftype_p2p(newtype, newp2p); |
| |
| mutex_lock(&priv->mutex); |
| |
| if (!ctx->vif || !iwl_legacy_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; |
| } |
| |
| 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_legacy_teardown_interface(priv, vif, true); |
| vif->type = newtype; |
| vif->p2p = newp2p; |
| err = iwl_legacy_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; |
| } |
| EXPORT_SYMBOL(iwl_legacy_mac_change_interface); |
| |
| /* |
| * 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_legacy_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_legacy_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_legacy_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_legacy_check_stuck_queue(priv, priv->cmd_queue)) |
| return; |
| |
| /* monitor and check for other stuck queues */ |
| if (iwl_legacy_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_legacy_check_stuck_queue(priv, cnt)) |
| return; |
| } |
| } |
| |
| mod_timer(&priv->watchdog, jiffies + |
| msecs_to_jiffies(IWL_WD_TICK(timeout))); |
| } |
| EXPORT_SYMBOL(iwl_legacy_bg_watchdog); |
| |
| void iwl_legacy_setup_watchdog(struct iwl_priv *priv) |
| { |
| unsigned int timeout = priv->cfg->base_params->wd_timeout; |
| |
| if (timeout) |
| mod_timer(&priv->watchdog, |
| jiffies + msecs_to_jiffies(IWL_WD_TICK(timeout))); |
| else |
| del_timer(&priv->watchdog); |
| } |
| EXPORT_SYMBOL(iwl_legacy_setup_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_legacy_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_legacy_beacon_time_mask_high(priv, |
| priv->hw_params.beacon_time_tsf_bits) >> |
| priv->hw_params.beacon_time_tsf_bits); |
| rem = (usec % interval) & iwl_legacy_beacon_time_mask_low(priv, |
| priv->hw_params.beacon_time_tsf_bits); |
| |
| return (quot << priv->hw_params.beacon_time_tsf_bits) + rem; |
| } |
| EXPORT_SYMBOL(iwl_legacy_usecs_to_beacons); |
| |
| /* base is usually what we get from ucode with each received frame, |
| * the same as HW timer counter counting down |
| */ |
| __le32 iwl_legacy_add_beacon_time(struct iwl_priv *priv, u32 base, |
| u32 addon, u32 beacon_interval) |
| { |
| u32 base_low = base & iwl_legacy_beacon_time_mask_low(priv, |
| priv->hw_params.beacon_time_tsf_bits); |
| u32 addon_low = addon & iwl_legacy_beacon_time_mask_low(priv, |
| priv->hw_params.beacon_time_tsf_bits); |
| u32 interval = beacon_interval * TIME_UNIT; |
| u32 res = (base & iwl_legacy_beacon_time_mask_high(priv, |
| priv->hw_params.beacon_time_tsf_bits)) + |
| (addon & iwl_legacy_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); |
| } |
| EXPORT_SYMBOL(iwl_legacy_add_beacon_time); |
| |
| #ifdef CONFIG_PM |
| |
| int iwl_legacy_pci_suspend(struct device *device) |
| { |
| struct pci_dev *pdev = to_pci_dev(device); |
| struct iwl_priv *priv = pci_get_drvdata(pdev); |
| |
| /* |
| * 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_legacy_apm_stop(priv); |
| |
| return 0; |
| } |
| EXPORT_SYMBOL(iwl_legacy_pci_suspend); |
| |
| int iwl_legacy_pci_resume(struct device *device) |
| { |
| struct pci_dev *pdev = to_pci_dev(device); |
| struct iwl_priv *priv = pci_get_drvdata(pdev); |
| bool hw_rfkill = false; |
| |
| /* |
| * We disable the RETRY_TIMEOUT register (0x41) to keep |
| * PCI Tx retries from interfering with C3 CPU state. |
| */ |
| pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00); |
| |
| iwl_legacy_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; |
| } |
| EXPORT_SYMBOL(iwl_legacy_pci_resume); |
| |
| const struct dev_pm_ops iwl_legacy_pm_ops = { |
| .suspend = iwl_legacy_pci_suspend, |
| .resume = iwl_legacy_pci_resume, |
| .freeze = iwl_legacy_pci_suspend, |
| .thaw = iwl_legacy_pci_resume, |
| .poweroff = iwl_legacy_pci_suspend, |
| .restore = iwl_legacy_pci_resume, |
| }; |
| EXPORT_SYMBOL(iwl_legacy_pm_ops); |
| |
| #endif /* CONFIG_PM */ |
| |
| static void |
| iwl_legacy_update_qos(struct iwl_priv *priv, struct iwl_rxon_context *ctx) |
| { |
| if (test_bit(STATUS_EXIT_PENDING, &priv->status)) |
| return; |
| |
| if (!ctx->is_active) |
| return; |
| |
| ctx->qos_data.def_qos_parm.qos_flags = 0; |
| |
| if (ctx->qos_data.qos_active) |
| ctx->qos_data.def_qos_parm.qos_flags |= |
| QOS_PARAM_FLG_UPDATE_EDCA_MSK; |
| |
| if (ctx->ht.enabled) |
| ctx->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK; |
| |
| IWL_DEBUG_QOS(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n", |
| ctx->qos_data.qos_active, |
| ctx->qos_data.def_qos_parm.qos_flags); |
| |
| iwl_legacy_send_cmd_pdu_async(priv, ctx->qos_cmd, |
| sizeof(struct iwl_qosparam_cmd), |
| &ctx->qos_data.def_qos_parm, NULL); |
| } |
| |
| /** |
| * iwl_legacy_mac_config - mac80211 config callback |
| */ |
| int iwl_legacy_mac_config(struct ieee80211_hw *hw, u32 changed) |
| { |
| struct iwl_priv *priv = hw->priv; |
| const struct iwl_channel_info *ch_info; |
| struct ieee80211_conf *conf = &hw->conf; |
| struct ieee80211_channel *channel = conf->channel; |
| struct iwl_ht_config *ht_conf = &priv->current_ht_config; |
| struct iwl_rxon_context *ctx; |
| unsigned long flags = 0; |
| int ret = 0; |
| u16 ch; |
| int scan_active = 0; |
| bool ht_changed[NUM_IWL_RXON_CTX] = {}; |
| |
| if (WARN_ON(!priv->cfg->ops->legacy)) |
| return -EOPNOTSUPP; |
| |
| mutex_lock(&priv->mutex); |
| |
| IWL_DEBUG_MAC80211(priv, "enter to channel %d changed 0x%X\n", |
| channel->hw_value, changed); |
| |
| if (unlikely(!priv->cfg->mod_params->disable_hw_scan && |
| test_bit(STATUS_SCANNING, &priv->status))) { |
| scan_active = 1; |
| IWL_DEBUG_MAC80211(priv, "leave - scanning\n"); |
| } |
| |
| if (changed & (IEEE80211_CONF_CHANGE_SMPS | |
| IEEE80211_CONF_CHANGE_CHANNEL)) { |
| /* mac80211 uses static for non-HT which is what we want */ |
| priv->current_ht_config.smps = conf->smps_mode; |
| |
| /* |
| * Recalculate chain counts. |
| * |
| * If monitor mode is enabled then mac80211 will |
| * set up the SM PS mode to OFF if an HT channel is |
| * configured. |
| */ |
| if (priv->cfg->ops->hcmd->set_rxon_chain) |
| for_each_context(priv, ctx) |
| priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx); |
| } |
| |
| /* during scanning mac80211 will delay channel setting until |
| * scan finish with changed = 0 |
| */ |
| if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) { |
| if (scan_active) |
| goto set_ch_out; |
| |
| ch = channel->hw_value; |
| ch_info = iwl_legacy_get_channel_info(priv, channel->band, ch); |
| if (!iwl_legacy_is_channel_valid(ch_info)) { |
| IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n"); |
| ret = -EINVAL; |
| goto set_ch_out; |
| } |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| |
| for_each_context(priv, ctx) { |
| /* Configure HT40 channels */ |
| if (ctx->ht.enabled != conf_is_ht(conf)) { |
| ctx->ht.enabled = conf_is_ht(conf); |
| ht_changed[ctx->ctxid] = true; |
| } |
| if (ctx->ht.enabled) { |
| if (conf_is_ht40_minus(conf)) { |
| ctx->ht.extension_chan_offset = |
| IEEE80211_HT_PARAM_CHA_SEC_BELOW; |
| ctx->ht.is_40mhz = true; |
| } else if (conf_is_ht40_plus(conf)) { |
| ctx->ht.extension_chan_offset = |
| IEEE80211_HT_PARAM_CHA_SEC_ABOVE; |
| ctx->ht.is_40mhz = true; |
| } else { |
| ctx->ht.extension_chan_offset = |
| IEEE80211_HT_PARAM_CHA_SEC_NONE; |
| ctx->ht.is_40mhz = false; |
| } |
| } else |
| ctx->ht.is_40mhz = false; |
| |
| /* |
| * Default to no protection. Protection mode will |
| * later be set from BSS config in iwl_ht_conf |
| */ |
| ctx->ht.protection = |
| IEEE80211_HT_OP_MODE_PROTECTION_NONE; |
| |
| /* if we are switching from ht to 2.4 clear flags |
| * from any ht related info since 2.4 does not |
| * support ht */ |
| if ((le16_to_cpu(ctx->staging.channel) != ch)) |
| ctx->staging.flags = 0; |
| |
| iwl_legacy_set_rxon_channel(priv, channel, ctx); |
| iwl_legacy_set_rxon_ht(priv, ht_conf); |
| |
| iwl_legacy_set_flags_for_band(priv, ctx, channel->band, |
| ctx->vif); |
| } |
| |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| if (priv->cfg->ops->legacy->update_bcast_stations) |
| ret = |
| priv->cfg->ops->legacy->update_bcast_stations(priv); |
| |
| set_ch_out: |
| /* The list of supported rates and rate mask can be different |
| * for each band; since the band may have changed, reset |
| * the rate mask to what mac80211 lists */ |
| iwl_legacy_set_rate(priv); |
| } |
| |
| if (changed & (IEEE80211_CONF_CHANGE_PS | |
| IEEE80211_CONF_CHANGE_IDLE)) { |
| ret = iwl_legacy_power_update_mode(priv, false); |
| if (ret) |
| IWL_DEBUG_MAC80211(priv, "Error setting sleep level\n"); |
| } |
| |
| if (changed & IEEE80211_CONF_CHANGE_POWER) { |
| IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n", |
| priv->tx_power_user_lmt, conf->power_level); |
| |
| iwl_legacy_set_tx_power(priv, conf->power_level, false); |
| } |
| |
| if (!iwl_legacy_is_ready(priv)) { |
| IWL_DEBUG_MAC80211(priv, "leave - not ready\n"); |
| goto out; |
| } |
| |
| if (scan_active) |
| goto out; |
| |
| for_each_context(priv, ctx) { |
| if (memcmp(&ctx->active, &ctx->staging, sizeof(ctx->staging))) |
| iwl_legacy_commit_rxon(priv, ctx); |
| else |
| IWL_DEBUG_INFO(priv, |
| "Not re-sending same RXON configuration.\n"); |
| if (ht_changed[ctx->ctxid]) |
| iwl_legacy_update_qos(priv, ctx); |
| } |
| |
| out: |
| IWL_DEBUG_MAC80211(priv, "leave\n"); |
| mutex_unlock(&priv->mutex); |
| return ret; |
| } |
| EXPORT_SYMBOL(iwl_legacy_mac_config); |
| |
| void iwl_legacy_mac_reset_tsf(struct ieee80211_hw *hw) |
| { |
| struct iwl_priv *priv = hw->priv; |
| unsigned long flags; |
| /* IBSS can only be the IWL_RXON_CTX_BSS context */ |
| struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; |
| |
| if (WARN_ON(!priv->cfg->ops->legacy)) |
| return; |
| |
| mutex_lock(&priv->mutex); |
| IWL_DEBUG_MAC80211(priv, "enter\n"); |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_config)); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| |
| /* new association get rid of ibss beacon skb */ |
| if (priv->beacon_skb) |
| dev_kfree_skb(priv->beacon_skb); |
| |
| priv->beacon_skb = NULL; |
| |
| priv->timestamp = 0; |
| |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| iwl_legacy_scan_cancel_timeout(priv, 100); |
| if (!iwl_legacy_is_ready_rf(priv)) { |
| IWL_DEBUG_MAC80211(priv, "leave - not ready\n"); |
| mutex_unlock(&priv->mutex); |
| return; |
| } |
| |
| /* we are restarting association process |
| * clear RXON_FILTER_ASSOC_MSK bit |
| */ |
| ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
| iwl_legacy_commit_rxon(priv, ctx); |
| |
| iwl_legacy_set_rate(priv); |
| |
| mutex_unlock(&priv->mutex); |
| |
| IWL_DEBUG_MAC80211(priv, "leave\n"); |
| } |
| EXPORT_SYMBOL(iwl_legacy_mac_reset_tsf); |
| |
| static void iwl_legacy_ht_conf(struct iwl_priv *priv, |
| struct ieee80211_vif *vif) |
| { |
| struct iwl_ht_config *ht_conf = &priv->current_ht_config; |
| struct ieee80211_sta *sta; |
| struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; |
| struct iwl_rxon_context *ctx = iwl_legacy_rxon_ctx_from_vif(vif); |
| |
| IWL_DEBUG_ASSOC(priv, "enter:\n"); |
| |
| if (!ctx->ht.enabled) |
| return; |
| |
| ctx->ht.protection = |
| bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION; |
| ctx->ht.non_gf_sta_present = |
| !!(bss_conf->ht_operation_mode & |
| IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT); |
| |
| ht_conf->single_chain_sufficient = false; |
| |
| switch (vif->type) { |
| case NL80211_IFTYPE_STATION: |
| rcu_read_lock(); |
| sta = ieee80211_find_sta(vif, bss_conf->bssid); |
| if (sta) { |
| struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap; |
| int maxstreams; |
| |
| maxstreams = (ht_cap->mcs.tx_params & |
| IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK) |
| >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT; |
| maxstreams += 1; |
| |
| if ((ht_cap->mcs.rx_mask[1] == 0) && |
| (ht_cap->mcs.rx_mask[2] == 0)) |
| ht_conf->single_chain_sufficient = true; |
| if (maxstreams <= 1) |
| ht_conf->single_chain_sufficient = true; |
| } else { |
| /* |
| * If at all, this can only happen through a race |
| * when the AP disconnects us while we're still |
| * setting up the connection, in that case mac80211 |
| * will soon tell us about that. |
| */ |
| ht_conf->single_chain_sufficient = true; |
| } |
| rcu_read_unlock(); |
| break; |
| case NL80211_IFTYPE_ADHOC: |
| ht_conf->single_chain_sufficient = true; |
| break; |
| default: |
| break; |
| } |
| |
| IWL_DEBUG_ASSOC(priv, "leave\n"); |
| } |
| |
| static inline void iwl_legacy_set_no_assoc(struct iwl_priv *priv, |
| struct ieee80211_vif *vif) |
| { |
| struct iwl_rxon_context *ctx = iwl_legacy_rxon_ctx_from_vif(vif); |
| |
| /* |
| * inform the ucode that there is no longer an |
| * association and that no more packets should be |
| * sent |
| */ |
| ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
| ctx->staging.assoc_id = 0; |
| iwl_legacy_commit_rxon(priv, ctx); |
| } |
| |
| static void iwl_legacy_beacon_update(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif) |
| { |
| struct iwl_priv *priv = hw->priv; |
| unsigned long flags; |
| __le64 timestamp; |
| struct sk_buff *skb = ieee80211_beacon_get(hw, vif); |
| |
| if (!skb) |
| return; |
| |
| IWL_DEBUG_MAC80211(priv, "enter\n"); |
| |
| lockdep_assert_held(&priv->mutex); |
| |
| if (!priv->beacon_ctx) { |
| IWL_ERR(priv, "update beacon but no beacon context!\n"); |
| dev_kfree_skb(skb); |
| return; |
| } |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| |
| if (priv->beacon_skb) |
| dev_kfree_skb(priv->beacon_skb); |
| |
| priv->beacon_skb = skb; |
| |
| timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp; |
| priv->timestamp = le64_to_cpu(timestamp); |
| |
| IWL_DEBUG_MAC80211(priv, "leave\n"); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| if (!iwl_legacy_is_ready_rf(priv)) { |
| IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n"); |
| return; |
| } |
| |
| priv->cfg->ops->legacy->post_associate(priv); |
| } |
| |
| void iwl_legacy_mac_bss_info_changed(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif, |
| struct ieee80211_bss_conf *bss_conf, |
| u32 changes) |
| { |
| struct iwl_priv *priv = hw->priv; |
| struct iwl_rxon_context *ctx = iwl_legacy_rxon_ctx_from_vif(vif); |
| int ret; |
| |
| if (WARN_ON(!priv->cfg->ops->legacy)) |
| return; |
| |
| IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes); |
| |
| if (!iwl_legacy_is_alive(priv)) |
| return; |
| |
| mutex_lock(&priv->mutex); |
| |
| if (changes & BSS_CHANGED_QOS) { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| ctx->qos_data.qos_active = bss_conf->qos; |
| iwl_legacy_update_qos(priv, ctx); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| } |
| |
| if (changes & BSS_CHANGED_BEACON_ENABLED) { |
| /* |
| * the add_interface code must make sure we only ever |
| * have a single interface that could be beaconing at |
| * any time. |
| */ |
| if (vif->bss_conf.enable_beacon) |
| priv->beacon_ctx = ctx; |
| else |
| priv->beacon_ctx = NULL; |
| } |
| |
| if (changes & BSS_CHANGED_BSSID) { |
| IWL_DEBUG_MAC80211(priv, "BSSID %pM\n", bss_conf->bssid); |
| |
| /* |
| * If there is currently a HW scan going on in the |
| * background then we need to cancel it else the RXON |
| * below/in post_associate will fail. |
| */ |
| if (iwl_legacy_scan_cancel_timeout(priv, 100)) { |
| IWL_WARN(priv, |
| "Aborted scan still in progress after 100ms\n"); |
| IWL_DEBUG_MAC80211(priv, |
| "leaving - scan abort failed.\n"); |
| mutex_unlock(&priv->mutex); |
| return; |
| } |
| |
| /* mac80211 only sets assoc when in STATION mode */ |
| if (vif->type == NL80211_IFTYPE_ADHOC || bss_conf->assoc) { |
| memcpy(ctx->staging.bssid_addr, |
| bss_conf->bssid, ETH_ALEN); |
| |
| /* currently needed in a few places */ |
| memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN); |
| } else { |
| ctx->staging.filter_flags &= |
| ~RXON_FILTER_ASSOC_MSK; |
| } |
| |
| } |
| |
| /* |
| * This needs to be after setting the BSSID in case |
| * mac80211 decides to do both changes at once because |
| * it will invoke post_associate. |
| */ |
| if (vif->type == NL80211_IFTYPE_ADHOC && changes & BSS_CHANGED_BEACON) |
| iwl_legacy_beacon_update(hw, vif); |
| |
| if (changes & BSS_CHANGED_ERP_PREAMBLE) { |
| IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n", |
| bss_conf->use_short_preamble); |
| if (bss_conf->use_short_preamble) |
| ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; |
| else |
| ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; |
| } |
| |
| if (changes & BSS_CHANGED_ERP_CTS_PROT) { |
| IWL_DEBUG_MAC80211(priv, |
| "ERP_CTS %d\n", bss_conf->use_cts_prot); |
| if (bss_conf->use_cts_prot && |
| (priv->band != IEEE80211_BAND_5GHZ)) |
| ctx->staging.flags |= RXON_FLG_TGG_PROTECT_MSK; |
| else |
| ctx->staging.flags &= ~RXON_FLG_TGG_PROTECT_MSK; |
| if (bss_conf->use_cts_prot) |
| ctx->staging.flags |= RXON_FLG_SELF_CTS_EN; |
| else |
| ctx->staging.flags &= ~RXON_FLG_SELF_CTS_EN; |
| } |
| |
| if (changes & BSS_CHANGED_BASIC_RATES) { |
| /* XXX use this information |
| * |
| * To do that, remove code from iwl_legacy_set_rate() and put something |
| * like this here: |
| * |
| if (A-band) |
| ctx->staging.ofdm_basic_rates = |
| bss_conf->basic_rates; |
| else |
| ctx->staging.ofdm_basic_rates = |
| bss_conf->basic_rates >> 4; |
| ctx->staging.cck_basic_rates = |
| bss_conf->basic_rates & 0xF; |
| */ |
| } |
| |
| if (changes & BSS_CHANGED_HT) { |
| iwl_legacy_ht_conf(priv, vif); |
| |
| if (priv->cfg->ops->hcmd->set_rxon_chain) |
| priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx); |
| } |
| |
| if (changes & BSS_CHANGED_ASSOC) { |
| IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc); |
| if (bss_conf->assoc) { |
| priv->timestamp = bss_conf->timestamp; |
| |
| if (!iwl_legacy_is_rfkill(priv)) |
| priv->cfg->ops->legacy->post_associate(priv); |
| } else |
| iwl_legacy_set_no_assoc(priv, vif); |
| } |
| |
| if (changes && iwl_legacy_is_associated_ctx(ctx) && bss_conf->aid) { |
| IWL_DEBUG_MAC80211(priv, "Changes (%#x) while associated\n", |
| changes); |
| ret = iwl_legacy_send_rxon_assoc(priv, ctx); |
| if (!ret) { |
| /* Sync active_rxon with latest change. */ |
| memcpy((void *)&ctx->active, |
| &ctx->staging, |
| sizeof(struct iwl_legacy_rxon_cmd)); |
| } |
| } |
| |
| if (changes & BSS_CHANGED_BEACON_ENABLED) { |
| if (vif->bss_conf.enable_beacon) { |
| memcpy(ctx->staging.bssid_addr, |
| bss_conf->bssid, ETH_ALEN); |
| memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN); |
| priv->cfg->ops->legacy->config_ap(priv); |
| } else |
| iwl_legacy_set_no_assoc(priv, vif); |
| } |
| |
| if (changes & BSS_CHANGED_IBSS) { |
| ret = priv->cfg->ops->legacy->manage_ibss_station(priv, vif, |
| bss_conf->ibss_joined); |
| if (ret) |
| IWL_ERR(priv, "failed to %s IBSS station %pM\n", |
| bss_conf->ibss_joined ? "add" : "remove", |
| bss_conf->bssid); |
| } |
| |
| mutex_unlock(&priv->mutex); |
| |
| IWL_DEBUG_MAC80211(priv, "leave\n"); |
| } |
| EXPORT_SYMBOL(iwl_legacy_mac_bss_info_changed); |
| |
| irqreturn_t iwl_legacy_isr(int irq, void *data) |
| { |
| struct iwl_priv *priv = data; |
| u32 inta, inta_mask; |
| u32 inta_fh; |
| unsigned long flags; |
| if (!priv) |
| return IRQ_NONE; |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| |
| /* Disable (but don't clear!) interrupts here to avoid |
| * back-to-back ISRs and sporadic interrupts from our NIC. |
| * If we have something to service, the tasklet will re-enable ints. |
| * If we *don't* have something, we'll re-enable before leaving here. */ |
| inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */ |
| iwl_write32(priv, CSR_INT_MASK, 0x00000000); |
| |
| /* Discover which interrupts are active/pending */ |
| inta = iwl_read32(priv, CSR_INT); |
| inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS); |
| |
| /* Ignore interrupt if there's nothing in NIC to service. |
| * This may be due to IRQ shared with another device, |
| * or due to sporadic interrupts thrown from our NIC. */ |
| if (!inta && !inta_fh) { |
| IWL_DEBUG_ISR(priv, |
| "Ignore interrupt, inta == 0, inta_fh == 0\n"); |
| goto none; |
| } |
| |
| if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) { |
| /* Hardware disappeared. It might have already raised |
| * an interrupt */ |
| IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta); |
| goto unplugged; |
| } |
| |
| IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n", |
| inta, inta_mask, inta_fh); |
| |
| inta &= ~CSR_INT_BIT_SCD; |
| |
| /* iwl_irq_tasklet() will service interrupts and re-enable them */ |
| if (likely(inta || inta_fh)) |
| tasklet_schedule(&priv->irq_tasklet); |
| |
| unplugged: |
| spin_unlock_irqrestore(&priv->lock, flags); |
| return IRQ_HANDLED; |
| |
| none: |
| /* re-enable interrupts here since we don't have anything to service. */ |
| /* only Re-enable if diabled by irq */ |
| if (test_bit(STATUS_INT_ENABLED, &priv->status)) |
| iwl_legacy_enable_interrupts(priv); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| return IRQ_NONE; |
| } |
| EXPORT_SYMBOL(iwl_legacy_isr); |
| |
| /* |
| * iwl_legacy_tx_cmd_protection: Set rts/cts. 3945 and 4965 only share this |
| * function. |
| */ |
| void iwl_legacy_tx_cmd_protection(struct iwl_priv *priv, |
| struct ieee80211_tx_info *info, |
| __le16 fc, __le32 *tx_flags) |
| { |
| if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) { |
| *tx_flags |= TX_CMD_FLG_RTS_MSK; |
| *tx_flags &= ~TX_CMD_FLG_CTS_MSK; |
| *tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK; |
| |
| if (!ieee80211_is_mgmt(fc)) |
| return; |
| |
| switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) { |
| case cpu_to_le16(IEEE80211_STYPE_AUTH): |
| case cpu_to_le16(IEEE80211_STYPE_DEAUTH): |
| case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ): |
| case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ): |
| *tx_flags &= ~TX_CMD_FLG_RTS_MSK; |
| *tx_flags |= TX_CMD_FLG_CTS_MSK; |
| break; |
| } |
| } else if (info->control.rates[0].flags & |
| IEEE80211_TX_RC_USE_CTS_PROTECT) { |
| *tx_flags &= ~TX_CMD_FLG_RTS_MSK; |
| *tx_flags |= TX_CMD_FLG_CTS_MSK; |
| *tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK; |
| } |
| } |
| EXPORT_SYMBOL(iwl_legacy_tx_cmd_protection); |