| /****************************************************************************** |
| * |
| * 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/etherdevice.h> |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/sched.h> |
| |
| #include "iwl-dev.h" |
| #include "iwl-core.h" |
| #include "iwl-io.h" |
| #include "iwl-helpers.h" |
| #include "iwl-agn-hw.h" |
| #include "iwl-agn.h" |
| #include "iwl-sta.h" |
| #include "iwl-trans.h" |
| #include "iwl-shared.h" |
| |
| int iwlagn_hw_valid_rtc_data_addr(u32 addr) |
| { |
| return (addr >= IWLAGN_RTC_DATA_LOWER_BOUND) && |
| (addr < IWLAGN_RTC_DATA_UPPER_BOUND); |
| } |
| |
| int iwlagn_send_tx_power(struct iwl_priv *priv) |
| { |
| struct iwlagn_tx_power_dbm_cmd tx_power_cmd; |
| u8 tx_ant_cfg_cmd; |
| |
| if (WARN_ONCE(test_bit(STATUS_SCAN_HW, &priv->shrd->status), |
| "TX Power requested while scanning!\n")) |
| return -EAGAIN; |
| |
| /* half dBm need to multiply */ |
| tx_power_cmd.global_lmt = (s8)(2 * priv->tx_power_user_lmt); |
| |
| if (priv->tx_power_lmt_in_half_dbm && |
| priv->tx_power_lmt_in_half_dbm < tx_power_cmd.global_lmt) { |
| /* |
| * For the newer devices which using enhanced/extend tx power |
| * table in EEPROM, the format is in half dBm. driver need to |
| * convert to dBm format before report to mac80211. |
| * By doing so, there is a possibility of 1/2 dBm resolution |
| * lost. driver will perform "round-up" operation before |
| * reporting, but it will cause 1/2 dBm tx power over the |
| * regulatory limit. Perform the checking here, if the |
| * "tx_power_user_lmt" is higher than EEPROM value (in |
| * half-dBm format), lower the tx power based on EEPROM |
| */ |
| tx_power_cmd.global_lmt = priv->tx_power_lmt_in_half_dbm; |
| } |
| tx_power_cmd.flags = IWLAGN_TX_POWER_NO_CLOSED; |
| tx_power_cmd.srv_chan_lmt = IWLAGN_TX_POWER_AUTO; |
| |
| if (IWL_UCODE_API(priv->ucode_ver) == 1) |
| tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD_V1; |
| else |
| tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD; |
| |
| return iwl_trans_send_cmd_pdu(trans(priv), tx_ant_cfg_cmd, CMD_SYNC, |
| sizeof(tx_power_cmd), &tx_power_cmd); |
| } |
| |
| void iwlagn_temperature(struct iwl_priv *priv) |
| { |
| /* store temperature from correct statistics (in Celsius) */ |
| priv->temperature = le32_to_cpu(priv->statistics.common.temperature); |
| iwl_tt_handler(priv); |
| } |
| |
| u16 iwlagn_eeprom_calib_version(struct iwl_priv *priv) |
| { |
| struct iwl_eeprom_calib_hdr { |
| u8 version; |
| u8 pa_type; |
| u16 voltage; |
| } *hdr; |
| |
| hdr = (struct iwl_eeprom_calib_hdr *)iwl_eeprom_query_addr(priv, |
| EEPROM_CALIB_ALL); |
| return hdr->version; |
| |
| } |
| |
| /* |
| * EEPROM |
| */ |
| static u32 eeprom_indirect_address(const struct iwl_priv *priv, u32 address) |
| { |
| u16 offset = 0; |
| |
| if ((address & INDIRECT_ADDRESS) == 0) |
| return address; |
| |
| switch (address & INDIRECT_TYPE_MSK) { |
| case INDIRECT_HOST: |
| offset = iwl_eeprom_query16(priv, EEPROM_LINK_HOST); |
| break; |
| case INDIRECT_GENERAL: |
| offset = iwl_eeprom_query16(priv, EEPROM_LINK_GENERAL); |
| break; |
| case INDIRECT_REGULATORY: |
| offset = iwl_eeprom_query16(priv, EEPROM_LINK_REGULATORY); |
| break; |
| case INDIRECT_TXP_LIMIT: |
| offset = iwl_eeprom_query16(priv, EEPROM_LINK_TXP_LIMIT); |
| break; |
| case INDIRECT_TXP_LIMIT_SIZE: |
| offset = iwl_eeprom_query16(priv, EEPROM_LINK_TXP_LIMIT_SIZE); |
| break; |
| case INDIRECT_CALIBRATION: |
| offset = iwl_eeprom_query16(priv, EEPROM_LINK_CALIBRATION); |
| break; |
| case INDIRECT_PROCESS_ADJST: |
| offset = iwl_eeprom_query16(priv, EEPROM_LINK_PROCESS_ADJST); |
| break; |
| case INDIRECT_OTHERS: |
| offset = iwl_eeprom_query16(priv, EEPROM_LINK_OTHERS); |
| break; |
| default: |
| IWL_ERR(priv, "illegal indirect type: 0x%X\n", |
| address & INDIRECT_TYPE_MSK); |
| break; |
| } |
| |
| /* translate the offset from words to byte */ |
| return (address & ADDRESS_MSK) + (offset << 1); |
| } |
| |
| const u8 *iwl_eeprom_query_addr(const struct iwl_priv *priv, size_t offset) |
| { |
| u32 address = eeprom_indirect_address(priv, offset); |
| BUG_ON(address >= priv->cfg->base_params->eeprom_size); |
| return &priv->eeprom[address]; |
| } |
| |
| struct iwl_mod_params iwlagn_mod_params = { |
| .amsdu_size_8K = 1, |
| .restart_fw = 1, |
| .plcp_check = true, |
| .bt_coex_active = true, |
| .no_sleep_autoadjust = true, |
| .power_level = IWL_POWER_INDEX_1, |
| .bt_ch_announce = true, |
| .wanted_ucode_alternative = 1, |
| .auto_agg = true, |
| /* the rest are 0 by default */ |
| }; |
| |
| int iwlagn_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band) |
| { |
| int idx = 0; |
| int band_offset = 0; |
| |
| /* HT rate format: mac80211 wants an MCS number, which is just LSB */ |
| if (rate_n_flags & RATE_MCS_HT_MSK) { |
| idx = (rate_n_flags & 0xff); |
| return idx; |
| /* Legacy rate format, search for match in table */ |
| } else { |
| if (band == IEEE80211_BAND_5GHZ) |
| band_offset = IWL_FIRST_OFDM_RATE; |
| for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++) |
| if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF)) |
| return idx - band_offset; |
| } |
| |
| return -1; |
| } |
| |
| static int iwl_get_single_channel_for_scan(struct iwl_priv *priv, |
| struct ieee80211_vif *vif, |
| enum ieee80211_band band, |
| struct iwl_scan_channel *scan_ch) |
| { |
| const struct ieee80211_supported_band *sband; |
| u16 passive_dwell = 0; |
| u16 active_dwell = 0; |
| int added = 0; |
| u16 channel = 0; |
| |
| sband = iwl_get_hw_mode(priv, band); |
| if (!sband) { |
| IWL_ERR(priv, "invalid band\n"); |
| return added; |
| } |
| |
| active_dwell = iwl_get_active_dwell_time(priv, band, 0); |
| passive_dwell = iwl_get_passive_dwell_time(priv, band, vif); |
| |
| if (passive_dwell <= active_dwell) |
| passive_dwell = active_dwell + 1; |
| |
| channel = iwl_get_single_channel_number(priv, band); |
| if (channel) { |
| scan_ch->channel = cpu_to_le16(channel); |
| scan_ch->type = SCAN_CHANNEL_TYPE_PASSIVE; |
| scan_ch->active_dwell = cpu_to_le16(active_dwell); |
| scan_ch->passive_dwell = cpu_to_le16(passive_dwell); |
| /* Set txpower levels to defaults */ |
| scan_ch->dsp_atten = 110; |
| if (band == IEEE80211_BAND_5GHZ) |
| scan_ch->tx_gain = ((1 << 5) | (3 << 3)) | 3; |
| else |
| scan_ch->tx_gain = ((1 << 5) | (5 << 3)); |
| added++; |
| } else |
| IWL_ERR(priv, "no valid channel found\n"); |
| return added; |
| } |
| |
| static int iwl_get_channels_for_scan(struct iwl_priv *priv, |
| struct ieee80211_vif *vif, |
| enum ieee80211_band band, |
| u8 is_active, u8 n_probes, |
| struct iwl_scan_channel *scan_ch) |
| { |
| struct ieee80211_channel *chan; |
| const struct ieee80211_supported_band *sband; |
| const struct iwl_channel_info *ch_info; |
| u16 passive_dwell = 0; |
| u16 active_dwell = 0; |
| int added, i; |
| u16 channel; |
| |
| sband = iwl_get_hw_mode(priv, band); |
| if (!sband) |
| return 0; |
| |
| active_dwell = iwl_get_active_dwell_time(priv, band, n_probes); |
| passive_dwell = iwl_get_passive_dwell_time(priv, band, vif); |
| |
| if (passive_dwell <= active_dwell) |
| passive_dwell = active_dwell + 1; |
| |
| for (i = 0, added = 0; i < priv->scan_request->n_channels; i++) { |
| chan = priv->scan_request->channels[i]; |
| |
| if (chan->band != band) |
| continue; |
| |
| channel = chan->hw_value; |
| scan_ch->channel = cpu_to_le16(channel); |
| |
| ch_info = iwl_get_channel_info(priv, band, channel); |
| if (!is_channel_valid(ch_info)) { |
| IWL_DEBUG_SCAN(priv, "Channel %d is INVALID for this band.\n", |
| channel); |
| continue; |
| } |
| |
| if (!is_active || is_channel_passive(ch_info) || |
| (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)) |
| scan_ch->type = SCAN_CHANNEL_TYPE_PASSIVE; |
| else |
| scan_ch->type = SCAN_CHANNEL_TYPE_ACTIVE; |
| |
| if (n_probes) |
| scan_ch->type |= IWL_SCAN_PROBE_MASK(n_probes); |
| |
| scan_ch->active_dwell = cpu_to_le16(active_dwell); |
| scan_ch->passive_dwell = cpu_to_le16(passive_dwell); |
| |
| /* Set txpower levels to defaults */ |
| scan_ch->dsp_atten = 110; |
| |
| /* NOTE: if we were doing 6Mb OFDM for scans we'd use |
| * power level: |
| * scan_ch->tx_gain = ((1 << 5) | (2 << 3)) | 3; |
| */ |
| if (band == IEEE80211_BAND_5GHZ) |
| scan_ch->tx_gain = ((1 << 5) | (3 << 3)) | 3; |
| else |
| scan_ch->tx_gain = ((1 << 5) | (5 << 3)); |
| |
| IWL_DEBUG_SCAN(priv, "Scanning ch=%d prob=0x%X [%s %d]\n", |
| channel, le32_to_cpu(scan_ch->type), |
| (scan_ch->type & SCAN_CHANNEL_TYPE_ACTIVE) ? |
| "ACTIVE" : "PASSIVE", |
| (scan_ch->type & SCAN_CHANNEL_TYPE_ACTIVE) ? |
| active_dwell : passive_dwell); |
| |
| scan_ch++; |
| added++; |
| } |
| |
| IWL_DEBUG_SCAN(priv, "total channels to scan %d\n", added); |
| return added; |
| } |
| |
| int iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif) |
| { |
| struct iwl_host_cmd cmd = { |
| .id = REPLY_SCAN_CMD, |
| .len = { sizeof(struct iwl_scan_cmd), }, |
| .flags = CMD_SYNC, |
| }; |
| struct iwl_scan_cmd *scan; |
| struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; |
| u32 rate_flags = 0; |
| u16 cmd_len; |
| u16 rx_chain = 0; |
| enum ieee80211_band band; |
| u8 n_probes = 0; |
| u8 rx_ant = hw_params(priv).valid_rx_ant; |
| u8 rate; |
| bool is_active = false; |
| int chan_mod; |
| u8 active_chains; |
| u8 scan_tx_antennas = hw_params(priv).valid_tx_ant; |
| int ret; |
| |
| lockdep_assert_held(&priv->shrd->mutex); |
| |
| if (vif) |
| ctx = iwl_rxon_ctx_from_vif(vif); |
| |
| if (!priv->scan_cmd) { |
| priv->scan_cmd = kmalloc(sizeof(struct iwl_scan_cmd) + |
| IWL_MAX_SCAN_SIZE, GFP_KERNEL); |
| if (!priv->scan_cmd) { |
| IWL_DEBUG_SCAN(priv, |
| "fail to allocate memory for scan\n"); |
| return -ENOMEM; |
| } |
| } |
| scan = priv->scan_cmd; |
| memset(scan, 0, sizeof(struct iwl_scan_cmd) + IWL_MAX_SCAN_SIZE); |
| |
| scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH; |
| scan->quiet_time = IWL_ACTIVE_QUIET_TIME; |
| |
| if (priv->scan_type != IWL_SCAN_ROC && |
| iwl_is_any_associated(priv)) { |
| u16 interval = 0; |
| u32 extra; |
| u32 suspend_time = 100; |
| u32 scan_suspend_time = 100; |
| |
| IWL_DEBUG_INFO(priv, "Scanning while associated...\n"); |
| switch (priv->scan_type) { |
| case IWL_SCAN_ROC: |
| WARN_ON(1); |
| break; |
| case IWL_SCAN_RADIO_RESET: |
| interval = 0; |
| break; |
| case IWL_SCAN_NORMAL: |
| interval = vif->bss_conf.beacon_int; |
| break; |
| } |
| |
| scan->suspend_time = 0; |
| scan->max_out_time = cpu_to_le32(200 * 1024); |
| if (!interval) |
| interval = suspend_time; |
| |
| extra = (suspend_time / interval) << 22; |
| scan_suspend_time = (extra | |
| ((suspend_time % interval) * 1024)); |
| scan->suspend_time = cpu_to_le32(scan_suspend_time); |
| IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n", |
| scan_suspend_time, interval); |
| } else if (priv->scan_type == IWL_SCAN_ROC) { |
| scan->suspend_time = 0; |
| scan->max_out_time = 0; |
| scan->quiet_time = 0; |
| scan->quiet_plcp_th = 0; |
| } |
| |
| switch (priv->scan_type) { |
| case IWL_SCAN_RADIO_RESET: |
| IWL_DEBUG_SCAN(priv, "Start internal passive scan.\n"); |
| break; |
| case IWL_SCAN_NORMAL: |
| if (priv->scan_request->n_ssids) { |
| int i, p = 0; |
| IWL_DEBUG_SCAN(priv, "Kicking off active scan\n"); |
| for (i = 0; i < priv->scan_request->n_ssids; i++) { |
| /* always does wildcard anyway */ |
| if (!priv->scan_request->ssids[i].ssid_len) |
| continue; |
| scan->direct_scan[p].id = WLAN_EID_SSID; |
| scan->direct_scan[p].len = |
| priv->scan_request->ssids[i].ssid_len; |
| memcpy(scan->direct_scan[p].ssid, |
| priv->scan_request->ssids[i].ssid, |
| priv->scan_request->ssids[i].ssid_len); |
| n_probes++; |
| p++; |
| } |
| is_active = true; |
| } else |
| IWL_DEBUG_SCAN(priv, "Start passive scan.\n"); |
| break; |
| case IWL_SCAN_ROC: |
| IWL_DEBUG_SCAN(priv, "Start ROC scan.\n"); |
| break; |
| } |
| |
| scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK; |
| scan->tx_cmd.sta_id = ctx->bcast_sta_id; |
| scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; |
| |
| switch (priv->scan_band) { |
| case IEEE80211_BAND_2GHZ: |
| scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK; |
| chan_mod = le32_to_cpu( |
| priv->contexts[IWL_RXON_CTX_BSS].active.flags & |
| RXON_FLG_CHANNEL_MODE_MSK) |
| >> RXON_FLG_CHANNEL_MODE_POS; |
| if (chan_mod == CHANNEL_MODE_PURE_40) { |
| rate = IWL_RATE_6M_PLCP; |
| } else { |
| rate = IWL_RATE_1M_PLCP; |
| rate_flags = RATE_MCS_CCK_MSK; |
| } |
| /* |
| * Internal scans are passive, so we can indiscriminately set |
| * the BT ignore flag on 2.4 GHz since it applies to TX only. |
| */ |
| if (priv->cfg->bt_params && |
| priv->cfg->bt_params->advanced_bt_coexist) |
| scan->tx_cmd.tx_flags |= TX_CMD_FLG_IGNORE_BT; |
| break; |
| case IEEE80211_BAND_5GHZ: |
| rate = IWL_RATE_6M_PLCP; |
| break; |
| default: |
| IWL_WARN(priv, "Invalid scan band\n"); |
| return -EIO; |
| } |
| |
| /* |
| * If active scanning is requested but a certain channel is |
| * marked passive, we can do active scanning if we detect |
| * transmissions. |
| * |
| * There is an issue with some firmware versions that triggers |
| * a sysassert on a "good CRC threshold" of zero (== disabled), |
| * on a radar channel even though this means that we should NOT |
| * send probes. |
| * |
| * The "good CRC threshold" is the number of frames that we |
| * need to receive during our dwell time on a channel before |
| * sending out probes -- setting this to a huge value will |
| * mean we never reach it, but at the same time work around |
| * the aforementioned issue. Thus use IWL_GOOD_CRC_TH_NEVER |
| * here instead of IWL_GOOD_CRC_TH_DISABLED. |
| * |
| * This was fixed in later versions along with some other |
| * scan changes, and the threshold behaves as a flag in those |
| * versions. |
| */ |
| if (priv->new_scan_threshold_behaviour) |
| scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH_DEFAULT : |
| IWL_GOOD_CRC_TH_DISABLED; |
| else |
| scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH_DEFAULT : |
| IWL_GOOD_CRC_TH_NEVER; |
| |
| band = priv->scan_band; |
| |
| if (priv->cfg->scan_rx_antennas[band]) |
| rx_ant = priv->cfg->scan_rx_antennas[band]; |
| |
| if (band == IEEE80211_BAND_2GHZ && |
| priv->cfg->bt_params && |
| priv->cfg->bt_params->advanced_bt_coexist) { |
| /* transmit 2.4 GHz probes only on first antenna */ |
| scan_tx_antennas = first_antenna(scan_tx_antennas); |
| } |
| |
| priv->scan_tx_ant[band] = iwl_toggle_tx_ant(priv, priv->scan_tx_ant[band], |
| scan_tx_antennas); |
| rate_flags |= iwl_ant_idx_to_flags(priv->scan_tx_ant[band]); |
| scan->tx_cmd.rate_n_flags = iwl_hw_set_rate_n_flags(rate, rate_flags); |
| |
| /* In power save mode use one chain, otherwise use all chains */ |
| if (test_bit(STATUS_POWER_PMI, &priv->shrd->status)) { |
| /* rx_ant has been set to all valid chains previously */ |
| active_chains = rx_ant & |
| ((u8)(priv->chain_noise_data.active_chains)); |
| if (!active_chains) |
| active_chains = rx_ant; |
| |
| IWL_DEBUG_SCAN(priv, "chain_noise_data.active_chains: %u\n", |
| priv->chain_noise_data.active_chains); |
| |
| rx_ant = first_antenna(active_chains); |
| } |
| if (priv->cfg->bt_params && |
| priv->cfg->bt_params->advanced_bt_coexist && |
| priv->bt_full_concurrent) { |
| /* operated as 1x1 in full concurrency mode */ |
| rx_ant = first_antenna(rx_ant); |
| } |
| |
| /* MIMO is not used here, but value is required */ |
| rx_chain |= |
| hw_params(priv).valid_rx_ant << RXON_RX_CHAIN_VALID_POS; |
| rx_chain |= rx_ant << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS; |
| rx_chain |= rx_ant << RXON_RX_CHAIN_FORCE_SEL_POS; |
| rx_chain |= 0x1 << RXON_RX_CHAIN_DRIVER_FORCE_POS; |
| scan->rx_chain = cpu_to_le16(rx_chain); |
| switch (priv->scan_type) { |
| case IWL_SCAN_NORMAL: |
| cmd_len = iwl_fill_probe_req(priv, |
| (struct ieee80211_mgmt *)scan->data, |
| vif->addr, |
| priv->scan_request->ie, |
| priv->scan_request->ie_len, |
| IWL_MAX_SCAN_SIZE - sizeof(*scan)); |
| break; |
| case IWL_SCAN_RADIO_RESET: |
| case IWL_SCAN_ROC: |
| /* use bcast addr, will not be transmitted but must be valid */ |
| cmd_len = iwl_fill_probe_req(priv, |
| (struct ieee80211_mgmt *)scan->data, |
| iwl_bcast_addr, NULL, 0, |
| IWL_MAX_SCAN_SIZE - sizeof(*scan)); |
| break; |
| default: |
| BUG(); |
| } |
| scan->tx_cmd.len = cpu_to_le16(cmd_len); |
| |
| scan->filter_flags |= (RXON_FILTER_ACCEPT_GRP_MSK | |
| RXON_FILTER_BCON_AWARE_MSK); |
| |
| switch (priv->scan_type) { |
| case IWL_SCAN_RADIO_RESET: |
| scan->channel_count = |
| iwl_get_single_channel_for_scan(priv, vif, band, |
| (void *)&scan->data[cmd_len]); |
| break; |
| case IWL_SCAN_NORMAL: |
| scan->channel_count = |
| iwl_get_channels_for_scan(priv, vif, band, |
| is_active, n_probes, |
| (void *)&scan->data[cmd_len]); |
| break; |
| case IWL_SCAN_ROC: { |
| struct iwl_scan_channel *scan_ch; |
| |
| scan->channel_count = 1; |
| |
| scan_ch = (void *)&scan->data[cmd_len]; |
| scan_ch->type = SCAN_CHANNEL_TYPE_PASSIVE; |
| scan_ch->channel = |
| cpu_to_le16(priv->hw_roc_channel->hw_value); |
| scan_ch->active_dwell = |
| scan_ch->passive_dwell = |
| cpu_to_le16(priv->hw_roc_duration); |
| |
| /* Set txpower levels to defaults */ |
| scan_ch->dsp_atten = 110; |
| |
| /* NOTE: if we were doing 6Mb OFDM for scans we'd use |
| * power level: |
| * scan_ch->tx_gain = ((1 << 5) | (2 << 3)) | 3; |
| */ |
| if (priv->hw_roc_channel->band == IEEE80211_BAND_5GHZ) |
| scan_ch->tx_gain = ((1 << 5) | (3 << 3)) | 3; |
| else |
| scan_ch->tx_gain = ((1 << 5) | (5 << 3)); |
| } |
| break; |
| } |
| |
| if (scan->channel_count == 0) { |
| IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count); |
| return -EIO; |
| } |
| |
| cmd.len[0] += le16_to_cpu(scan->tx_cmd.len) + |
| scan->channel_count * sizeof(struct iwl_scan_channel); |
| cmd.data[0] = scan; |
| cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; |
| scan->len = cpu_to_le16(cmd.len[0]); |
| |
| /* set scan bit here for PAN params */ |
| set_bit(STATUS_SCAN_HW, &priv->shrd->status); |
| |
| ret = iwlagn_set_pan_params(priv); |
| if (ret) |
| return ret; |
| |
| ret = iwl_trans_send_cmd(trans(priv), &cmd); |
| if (ret) { |
| clear_bit(STATUS_SCAN_HW, &priv->shrd->status); |
| iwlagn_set_pan_params(priv); |
| } |
| |
| return ret; |
| } |
| |
| int iwlagn_manage_ibss_station(struct iwl_priv *priv, |
| struct ieee80211_vif *vif, bool add) |
| { |
| struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv; |
| |
| if (add) |
| return iwlagn_add_bssid_station(priv, vif_priv->ctx, |
| vif->bss_conf.bssid, |
| &vif_priv->ibss_bssid_sta_id); |
| return iwl_remove_station(priv, vif_priv->ibss_bssid_sta_id, |
| vif->bss_conf.bssid); |
| } |
| |
| /** |
| * iwlagn_txfifo_flush: send REPLY_TXFIFO_FLUSH command to uCode |
| * |
| * pre-requirements: |
| * 1. acquire mutex before calling |
| * 2. make sure rf is on and not in exit state |
| */ |
| int iwlagn_txfifo_flush(struct iwl_priv *priv, u16 flush_control) |
| { |
| struct iwl_txfifo_flush_cmd flush_cmd; |
| struct iwl_host_cmd cmd = { |
| .id = REPLY_TXFIFO_FLUSH, |
| .len = { sizeof(struct iwl_txfifo_flush_cmd), }, |
| .flags = CMD_SYNC, |
| .data = { &flush_cmd, }, |
| }; |
| |
| might_sleep(); |
| |
| memset(&flush_cmd, 0, sizeof(flush_cmd)); |
| if (flush_control & BIT(IWL_RXON_CTX_BSS)) |
| flush_cmd.fifo_control = IWL_SCD_VO_MSK | IWL_SCD_VI_MSK | |
| IWL_SCD_BE_MSK | IWL_SCD_BK_MSK | |
| IWL_SCD_MGMT_MSK; |
| if ((flush_control & BIT(IWL_RXON_CTX_PAN)) && |
| (priv->valid_contexts != BIT(IWL_RXON_CTX_BSS))) |
| flush_cmd.fifo_control |= IWL_PAN_SCD_VO_MSK | |
| IWL_PAN_SCD_VI_MSK | IWL_PAN_SCD_BE_MSK | |
| IWL_PAN_SCD_BK_MSK | IWL_PAN_SCD_MGMT_MSK | |
| IWL_PAN_SCD_MULTICAST_MSK; |
| |
| if (priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE) |
| flush_cmd.fifo_control |= IWL_AGG_TX_QUEUE_MSK; |
| |
| IWL_DEBUG_INFO(priv, "fifo queue control: 0X%x\n", |
| flush_cmd.fifo_control); |
| flush_cmd.flush_control = cpu_to_le16(flush_control); |
| |
| return iwl_trans_send_cmd(trans(priv), &cmd); |
| } |
| |
| void iwlagn_dev_txfifo_flush(struct iwl_priv *priv, u16 flush_control) |
| { |
| mutex_lock(&priv->shrd->mutex); |
| ieee80211_stop_queues(priv->hw); |
| if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) { |
| IWL_ERR(priv, "flush request fail\n"); |
| goto done; |
| } |
| IWL_DEBUG_INFO(priv, "wait transmit/flush all frames\n"); |
| iwl_trans_wait_tx_queue_empty(trans(priv)); |
| done: |
| ieee80211_wake_queues(priv->hw); |
| mutex_unlock(&priv->shrd->mutex); |
| } |
| |
| /* |
| * BT coex |
| */ |
| /* |
| * Macros to access the lookup table. |
| * |
| * The lookup table has 7 inputs: bt3_prio, bt3_txrx, bt_rf_act, wifi_req, |
| * wifi_prio, wifi_txrx and wifi_sh_ant_req. |
| * |
| * It has three outputs: WLAN_ACTIVE, WLAN_KILL and ANT_SWITCH |
| * |
| * The format is that "registers" 8 through 11 contain the WLAN_ACTIVE bits |
| * one after another in 32-bit registers, and "registers" 0 through 7 contain |
| * the WLAN_KILL and ANT_SWITCH bits interleaved (in that order). |
| * |
| * These macros encode that format. |
| */ |
| #define LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, wifi_req, wifi_prio, \ |
| wifi_txrx, wifi_sh_ant_req) \ |
| (bt3_prio | (bt3_txrx << 1) | (bt_rf_act << 2) | (wifi_req << 3) | \ |
| (wifi_prio << 4) | (wifi_txrx << 5) | (wifi_sh_ant_req << 6)) |
| |
| #define LUT_PTA_WLAN_ACTIVE_OP(lut, op, val) \ |
| lut[8 + ((val) >> 5)] op (cpu_to_le32(BIT((val) & 0x1f))) |
| #define LUT_TEST_PTA_WLAN_ACTIVE(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \ |
| wifi_prio, wifi_txrx, wifi_sh_ant_req) \ |
| (!!(LUT_PTA_WLAN_ACTIVE_OP(lut, &, LUT_VALUE(bt3_prio, bt3_txrx, \ |
| bt_rf_act, wifi_req, wifi_prio, wifi_txrx, \ |
| wifi_sh_ant_req)))) |
| #define LUT_SET_PTA_WLAN_ACTIVE(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \ |
| wifi_prio, wifi_txrx, wifi_sh_ant_req) \ |
| LUT_PTA_WLAN_ACTIVE_OP(lut, |=, LUT_VALUE(bt3_prio, bt3_txrx, \ |
| bt_rf_act, wifi_req, wifi_prio, wifi_txrx, \ |
| wifi_sh_ant_req)) |
| #define LUT_CLEAR_PTA_WLAN_ACTIVE(lut, bt3_prio, bt3_txrx, bt_rf_act, \ |
| wifi_req, wifi_prio, wifi_txrx, \ |
| wifi_sh_ant_req) \ |
| LUT_PTA_WLAN_ACTIVE_OP(lut, &= ~, LUT_VALUE(bt3_prio, bt3_txrx, \ |
| bt_rf_act, wifi_req, wifi_prio, wifi_txrx, \ |
| wifi_sh_ant_req)) |
| |
| #define LUT_WLAN_KILL_OP(lut, op, val) \ |
| lut[(val) >> 4] op (cpu_to_le32(BIT(((val) << 1) & 0x1e))) |
| #define LUT_TEST_WLAN_KILL(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \ |
| wifi_prio, wifi_txrx, wifi_sh_ant_req) \ |
| (!!(LUT_WLAN_KILL_OP(lut, &, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \ |
| wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req)))) |
| #define LUT_SET_WLAN_KILL(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \ |
| wifi_prio, wifi_txrx, wifi_sh_ant_req) \ |
| LUT_WLAN_KILL_OP(lut, |=, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \ |
| wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req)) |
| #define LUT_CLEAR_WLAN_KILL(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \ |
| wifi_prio, wifi_txrx, wifi_sh_ant_req) \ |
| LUT_WLAN_KILL_OP(lut, &= ~, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \ |
| wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req)) |
| |
| #define LUT_ANT_SWITCH_OP(lut, op, val) \ |
| lut[(val) >> 4] op (cpu_to_le32(BIT((((val) << 1) & 0x1e) + 1))) |
| #define LUT_TEST_ANT_SWITCH(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \ |
| wifi_prio, wifi_txrx, wifi_sh_ant_req) \ |
| (!!(LUT_ANT_SWITCH_OP(lut, &, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \ |
| wifi_req, wifi_prio, wifi_txrx, \ |
| wifi_sh_ant_req)))) |
| #define LUT_SET_ANT_SWITCH(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \ |
| wifi_prio, wifi_txrx, wifi_sh_ant_req) \ |
| LUT_ANT_SWITCH_OP(lut, |=, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \ |
| wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req)) |
| #define LUT_CLEAR_ANT_SWITCH(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \ |
| wifi_prio, wifi_txrx, wifi_sh_ant_req) \ |
| LUT_ANT_SWITCH_OP(lut, &= ~, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \ |
| wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req)) |
| |
| static const __le32 iwlagn_def_3w_lookup[12] = { |
| cpu_to_le32(0xaaaaaaaa), |
| cpu_to_le32(0xaaaaaaaa), |
| cpu_to_le32(0xaeaaaaaa), |
| cpu_to_le32(0xaaaaaaaa), |
| cpu_to_le32(0xcc00ff28), |
| cpu_to_le32(0x0000aaaa), |
| cpu_to_le32(0xcc00aaaa), |
| cpu_to_le32(0x0000aaaa), |
| cpu_to_le32(0xc0004000), |
| cpu_to_le32(0x00004000), |
| cpu_to_le32(0xf0005000), |
| cpu_to_le32(0xf0005000), |
| }; |
| |
| static const __le32 iwlagn_concurrent_lookup[12] = { |
| cpu_to_le32(0xaaaaaaaa), |
| cpu_to_le32(0xaaaaaaaa), |
| cpu_to_le32(0xaaaaaaaa), |
| cpu_to_le32(0xaaaaaaaa), |
| cpu_to_le32(0xaaaaaaaa), |
| cpu_to_le32(0xaaaaaaaa), |
| cpu_to_le32(0xaaaaaaaa), |
| cpu_to_le32(0xaaaaaaaa), |
| cpu_to_le32(0x00000000), |
| cpu_to_le32(0x00000000), |
| cpu_to_le32(0x00000000), |
| cpu_to_le32(0x00000000), |
| }; |
| |
| void iwlagn_send_advance_bt_config(struct iwl_priv *priv) |
| { |
| struct iwl_basic_bt_cmd basic = { |
| .max_kill = IWLAGN_BT_MAX_KILL_DEFAULT, |
| .bt3_timer_t7_value = IWLAGN_BT3_T7_DEFAULT, |
| .bt3_prio_sample_time = IWLAGN_BT3_PRIO_SAMPLE_DEFAULT, |
| .bt3_timer_t2_value = IWLAGN_BT3_T2_DEFAULT, |
| }; |
| struct iwl6000_bt_cmd bt_cmd_6000; |
| struct iwl2000_bt_cmd bt_cmd_2000; |
| int ret; |
| |
| BUILD_BUG_ON(sizeof(iwlagn_def_3w_lookup) != |
| sizeof(basic.bt3_lookup_table)); |
| |
| if (priv->cfg->bt_params) { |
| if (priv->cfg->bt_params->bt_session_2) { |
| bt_cmd_2000.prio_boost = cpu_to_le32( |
| priv->cfg->bt_params->bt_prio_boost); |
| bt_cmd_2000.tx_prio_boost = 0; |
| bt_cmd_2000.rx_prio_boost = 0; |
| } else { |
| bt_cmd_6000.prio_boost = |
| priv->cfg->bt_params->bt_prio_boost; |
| bt_cmd_6000.tx_prio_boost = 0; |
| bt_cmd_6000.rx_prio_boost = 0; |
| } |
| } else { |
| IWL_ERR(priv, "failed to construct BT Coex Config\n"); |
| return; |
| } |
| |
| basic.kill_ack_mask = priv->kill_ack_mask; |
| basic.kill_cts_mask = priv->kill_cts_mask; |
| basic.valid = priv->bt_valid; |
| |
| /* |
| * Configure BT coex mode to "no coexistence" when the |
| * user disabled BT coexistence, we have no interface |
| * (might be in monitor mode), or the interface is in |
| * IBSS mode (no proper uCode support for coex then). |
| */ |
| if (!iwlagn_mod_params.bt_coex_active || |
| priv->iw_mode == NL80211_IFTYPE_ADHOC) { |
| basic.flags = IWLAGN_BT_FLAG_COEX_MODE_DISABLED; |
| } else { |
| basic.flags = IWLAGN_BT_FLAG_COEX_MODE_3W << |
| IWLAGN_BT_FLAG_COEX_MODE_SHIFT; |
| |
| if (!priv->bt_enable_pspoll) |
| basic.flags |= IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE; |
| else |
| basic.flags &= ~IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE; |
| |
| if (priv->bt_ch_announce) |
| basic.flags |= IWLAGN_BT_FLAG_CHANNEL_INHIBITION; |
| IWL_DEBUG_COEX(priv, "BT coex flag: 0X%x\n", basic.flags); |
| } |
| priv->bt_enable_flag = basic.flags; |
| if (priv->bt_full_concurrent) |
| memcpy(basic.bt3_lookup_table, iwlagn_concurrent_lookup, |
| sizeof(iwlagn_concurrent_lookup)); |
| else |
| memcpy(basic.bt3_lookup_table, iwlagn_def_3w_lookup, |
| sizeof(iwlagn_def_3w_lookup)); |
| |
| IWL_DEBUG_COEX(priv, "BT coex %s in %s mode\n", |
| basic.flags ? "active" : "disabled", |
| priv->bt_full_concurrent ? |
| "full concurrency" : "3-wire"); |
| |
| if (priv->cfg->bt_params->bt_session_2) { |
| memcpy(&bt_cmd_2000.basic, &basic, |
| sizeof(basic)); |
| ret = iwl_trans_send_cmd_pdu(trans(priv), REPLY_BT_CONFIG, |
| CMD_SYNC, sizeof(bt_cmd_2000), &bt_cmd_2000); |
| } else { |
| memcpy(&bt_cmd_6000.basic, &basic, |
| sizeof(basic)); |
| ret = iwl_trans_send_cmd_pdu(trans(priv), REPLY_BT_CONFIG, |
| CMD_SYNC, sizeof(bt_cmd_6000), &bt_cmd_6000); |
| } |
| if (ret) |
| IWL_ERR(priv, "failed to send BT Coex Config\n"); |
| |
| } |
| |
| void iwlagn_bt_adjust_rssi_monitor(struct iwl_priv *priv, bool rssi_ena) |
| { |
| struct iwl_rxon_context *ctx, *found_ctx = NULL; |
| bool found_ap = false; |
| |
| lockdep_assert_held(&priv->shrd->mutex); |
| |
| /* Check whether AP or GO mode is active. */ |
| if (rssi_ena) { |
| for_each_context(priv, ctx) { |
| if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_AP && |
| iwl_is_associated_ctx(ctx)) { |
| found_ap = true; |
| break; |
| } |
| } |
| } |
| |
| /* |
| * If disable was received or If GO/AP mode, disable RSSI |
| * measurements. |
| */ |
| if (!rssi_ena || found_ap) { |
| if (priv->cur_rssi_ctx) { |
| ctx = priv->cur_rssi_ctx; |
| ieee80211_disable_rssi_reports(ctx->vif); |
| priv->cur_rssi_ctx = NULL; |
| } |
| return; |
| } |
| |
| /* |
| * If rssi measurements need to be enabled, consider all cases now. |
| * Figure out how many contexts are active. |
| */ |
| for_each_context(priv, ctx) { |
| if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION && |
| iwl_is_associated_ctx(ctx)) { |
| found_ctx = ctx; |
| break; |
| } |
| } |
| |
| /* |
| * rssi monitor already enabled for the correct interface...nothing |
| * to do. |
| */ |
| if (found_ctx == priv->cur_rssi_ctx) |
| return; |
| |
| /* |
| * Figure out if rssi monitor is currently enabled, and needs |
| * to be changed. If rssi monitor is already enabled, disable |
| * it first else just enable rssi measurements on the |
| * interface found above. |
| */ |
| if (priv->cur_rssi_ctx) { |
| ctx = priv->cur_rssi_ctx; |
| if (ctx->vif) |
| ieee80211_disable_rssi_reports(ctx->vif); |
| } |
| |
| priv->cur_rssi_ctx = found_ctx; |
| |
| if (!found_ctx) |
| return; |
| |
| ieee80211_enable_rssi_reports(found_ctx->vif, |
| IWLAGN_BT_PSP_MIN_RSSI_THRESHOLD, |
| IWLAGN_BT_PSP_MAX_RSSI_THRESHOLD); |
| } |
| |
| static bool iwlagn_bt_traffic_is_sco(struct iwl_bt_uart_msg *uart_msg) |
| { |
| return BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3 >> |
| BT_UART_MSG_FRAME3SCOESCO_POS; |
| } |
| |
| static void iwlagn_bt_traffic_change_work(struct work_struct *work) |
| { |
| struct iwl_priv *priv = |
| container_of(work, struct iwl_priv, bt_traffic_change_work); |
| struct iwl_rxon_context *ctx; |
| int smps_request = -1; |
| |
| if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) { |
| /* bt coex disabled */ |
| return; |
| } |
| |
| /* |
| * Note: bt_traffic_load can be overridden by scan complete and |
| * coex profile notifications. Ignore that since only bad consequence |
| * can be not matching debug print with actual state. |
| */ |
| IWL_DEBUG_COEX(priv, "BT traffic load changes: %d\n", |
| priv->bt_traffic_load); |
| |
| switch (priv->bt_traffic_load) { |
| case IWL_BT_COEX_TRAFFIC_LOAD_NONE: |
| if (priv->bt_status) |
| smps_request = IEEE80211_SMPS_DYNAMIC; |
| else |
| smps_request = IEEE80211_SMPS_AUTOMATIC; |
| break; |
| case IWL_BT_COEX_TRAFFIC_LOAD_LOW: |
| smps_request = IEEE80211_SMPS_DYNAMIC; |
| break; |
| case IWL_BT_COEX_TRAFFIC_LOAD_HIGH: |
| case IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS: |
| smps_request = IEEE80211_SMPS_STATIC; |
| break; |
| default: |
| IWL_ERR(priv, "Invalid BT traffic load: %d\n", |
| priv->bt_traffic_load); |
| break; |
| } |
| |
| mutex_lock(&priv->shrd->mutex); |
| |
| /* |
| * We can not send command to firmware while scanning. When the scan |
| * complete we will schedule this work again. We do check with mutex |
| * locked to prevent new scan request to arrive. We do not check |
| * STATUS_SCANNING to avoid race when queue_work two times from |
| * different notifications, but quit and not perform any work at all. |
| */ |
| if (test_bit(STATUS_SCAN_HW, &priv->shrd->status)) |
| goto out; |
| |
| iwl_update_chain_flags(priv); |
| |
| if (smps_request != -1) { |
| priv->current_ht_config.smps = smps_request; |
| for_each_context(priv, ctx) { |
| if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION) |
| ieee80211_request_smps(ctx->vif, smps_request); |
| } |
| } |
| |
| /* |
| * Dynamic PS poll related functionality. Adjust RSSI measurements if |
| * necessary. |
| */ |
| iwlagn_bt_coex_rssi_monitor(priv); |
| out: |
| mutex_unlock(&priv->shrd->mutex); |
| } |
| |
| /* |
| * If BT sco traffic, and RSSI monitor is enabled, move measurements to the |
| * correct interface or disable it if this is the last interface to be |
| * removed. |
| */ |
| void iwlagn_bt_coex_rssi_monitor(struct iwl_priv *priv) |
| { |
| if (priv->bt_is_sco && |
| priv->bt_traffic_load == IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS) |
| iwlagn_bt_adjust_rssi_monitor(priv, true); |
| else |
| iwlagn_bt_adjust_rssi_monitor(priv, false); |
| } |
| |
| static void iwlagn_print_uartmsg(struct iwl_priv *priv, |
| struct iwl_bt_uart_msg *uart_msg) |
| { |
| IWL_DEBUG_COEX(priv, "Message Type = 0x%X, SSN = 0x%X, " |
| "Update Req = 0x%X", |
| (BT_UART_MSG_FRAME1MSGTYPE_MSK & uart_msg->frame1) >> |
| BT_UART_MSG_FRAME1MSGTYPE_POS, |
| (BT_UART_MSG_FRAME1SSN_MSK & uart_msg->frame1) >> |
| BT_UART_MSG_FRAME1SSN_POS, |
| (BT_UART_MSG_FRAME1UPDATEREQ_MSK & uart_msg->frame1) >> |
| BT_UART_MSG_FRAME1UPDATEREQ_POS); |
| |
| IWL_DEBUG_COEX(priv, "Open connections = 0x%X, Traffic load = 0x%X, " |
| "Chl_SeqN = 0x%X, In band = 0x%X", |
| (BT_UART_MSG_FRAME2OPENCONNECTIONS_MSK & uart_msg->frame2) >> |
| BT_UART_MSG_FRAME2OPENCONNECTIONS_POS, |
| (BT_UART_MSG_FRAME2TRAFFICLOAD_MSK & uart_msg->frame2) >> |
| BT_UART_MSG_FRAME2TRAFFICLOAD_POS, |
| (BT_UART_MSG_FRAME2CHLSEQN_MSK & uart_msg->frame2) >> |
| BT_UART_MSG_FRAME2CHLSEQN_POS, |
| (BT_UART_MSG_FRAME2INBAND_MSK & uart_msg->frame2) >> |
| BT_UART_MSG_FRAME2INBAND_POS); |
| |
| IWL_DEBUG_COEX(priv, "SCO/eSCO = 0x%X, Sniff = 0x%X, A2DP = 0x%X, " |
| "ACL = 0x%X, Master = 0x%X, OBEX = 0x%X", |
| (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3) >> |
| BT_UART_MSG_FRAME3SCOESCO_POS, |
| (BT_UART_MSG_FRAME3SNIFF_MSK & uart_msg->frame3) >> |
| BT_UART_MSG_FRAME3SNIFF_POS, |
| (BT_UART_MSG_FRAME3A2DP_MSK & uart_msg->frame3) >> |
| BT_UART_MSG_FRAME3A2DP_POS, |
| (BT_UART_MSG_FRAME3ACL_MSK & uart_msg->frame3) >> |
| BT_UART_MSG_FRAME3ACL_POS, |
| (BT_UART_MSG_FRAME3MASTER_MSK & uart_msg->frame3) >> |
| BT_UART_MSG_FRAME3MASTER_POS, |
| (BT_UART_MSG_FRAME3OBEX_MSK & uart_msg->frame3) >> |
| BT_UART_MSG_FRAME3OBEX_POS); |
| |
| IWL_DEBUG_COEX(priv, "Idle duration = 0x%X", |
| (BT_UART_MSG_FRAME4IDLEDURATION_MSK & uart_msg->frame4) >> |
| BT_UART_MSG_FRAME4IDLEDURATION_POS); |
| |
| IWL_DEBUG_COEX(priv, "Tx Activity = 0x%X, Rx Activity = 0x%X, " |
| "eSCO Retransmissions = 0x%X", |
| (BT_UART_MSG_FRAME5TXACTIVITY_MSK & uart_msg->frame5) >> |
| BT_UART_MSG_FRAME5TXACTIVITY_POS, |
| (BT_UART_MSG_FRAME5RXACTIVITY_MSK & uart_msg->frame5) >> |
| BT_UART_MSG_FRAME5RXACTIVITY_POS, |
| (BT_UART_MSG_FRAME5ESCORETRANSMIT_MSK & uart_msg->frame5) >> |
| BT_UART_MSG_FRAME5ESCORETRANSMIT_POS); |
| |
| IWL_DEBUG_COEX(priv, "Sniff Interval = 0x%X, Discoverable = 0x%X", |
| (BT_UART_MSG_FRAME6SNIFFINTERVAL_MSK & uart_msg->frame6) >> |
| BT_UART_MSG_FRAME6SNIFFINTERVAL_POS, |
| (BT_UART_MSG_FRAME6DISCOVERABLE_MSK & uart_msg->frame6) >> |
| BT_UART_MSG_FRAME6DISCOVERABLE_POS); |
| |
| IWL_DEBUG_COEX(priv, "Sniff Activity = 0x%X, Page = " |
| "0x%X, Inquiry = 0x%X, Connectable = 0x%X", |
| (BT_UART_MSG_FRAME7SNIFFACTIVITY_MSK & uart_msg->frame7) >> |
| BT_UART_MSG_FRAME7SNIFFACTIVITY_POS, |
| (BT_UART_MSG_FRAME7PAGE_MSK & uart_msg->frame7) >> |
| BT_UART_MSG_FRAME7PAGE_POS, |
| (BT_UART_MSG_FRAME7INQUIRY_MSK & uart_msg->frame7) >> |
| BT_UART_MSG_FRAME7INQUIRY_POS, |
| (BT_UART_MSG_FRAME7CONNECTABLE_MSK & uart_msg->frame7) >> |
| BT_UART_MSG_FRAME7CONNECTABLE_POS); |
| } |
| |
| static void iwlagn_set_kill_msk(struct iwl_priv *priv, |
| struct iwl_bt_uart_msg *uart_msg) |
| { |
| u8 kill_msk; |
| static const __le32 bt_kill_ack_msg[2] = { |
| IWLAGN_BT_KILL_ACK_MASK_DEFAULT, |
| IWLAGN_BT_KILL_ACK_CTS_MASK_SCO }; |
| static const __le32 bt_kill_cts_msg[2] = { |
| IWLAGN_BT_KILL_CTS_MASK_DEFAULT, |
| IWLAGN_BT_KILL_ACK_CTS_MASK_SCO }; |
| |
| kill_msk = (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3) |
| ? 1 : 0; |
| if (priv->kill_ack_mask != bt_kill_ack_msg[kill_msk] || |
| priv->kill_cts_mask != bt_kill_cts_msg[kill_msk]) { |
| priv->bt_valid |= IWLAGN_BT_VALID_KILL_ACK_MASK; |
| priv->kill_ack_mask = bt_kill_ack_msg[kill_msk]; |
| priv->bt_valid |= IWLAGN_BT_VALID_KILL_CTS_MASK; |
| priv->kill_cts_mask = bt_kill_cts_msg[kill_msk]; |
| |
| /* schedule to send runtime bt_config */ |
| queue_work(priv->shrd->workqueue, &priv->bt_runtime_config); |
| } |
| } |
| |
| void iwlagn_bt_coex_profile_notif(struct iwl_priv *priv, |
| struct iwl_rx_mem_buffer *rxb) |
| { |
| unsigned long flags; |
| struct iwl_rx_packet *pkt = rxb_addr(rxb); |
| struct iwl_bt_coex_profile_notif *coex = &pkt->u.bt_coex_profile_notif; |
| struct iwl_bt_uart_msg *uart_msg = &coex->last_bt_uart_msg; |
| |
| if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) { |
| /* bt coex disabled */ |
| return; |
| } |
| |
| IWL_DEBUG_COEX(priv, "BT Coex notification:\n"); |
| IWL_DEBUG_COEX(priv, " status: %d\n", coex->bt_status); |
| IWL_DEBUG_COEX(priv, " traffic load: %d\n", coex->bt_traffic_load); |
| IWL_DEBUG_COEX(priv, " CI compliance: %d\n", |
| coex->bt_ci_compliance); |
| iwlagn_print_uartmsg(priv, uart_msg); |
| |
| priv->last_bt_traffic_load = priv->bt_traffic_load; |
| priv->bt_is_sco = iwlagn_bt_traffic_is_sco(uart_msg); |
| |
| if (priv->iw_mode != NL80211_IFTYPE_ADHOC) { |
| if (priv->bt_status != coex->bt_status || |
| priv->last_bt_traffic_load != coex->bt_traffic_load) { |
| if (coex->bt_status) { |
| /* BT on */ |
| if (!priv->bt_ch_announce) |
| priv->bt_traffic_load = |
| IWL_BT_COEX_TRAFFIC_LOAD_HIGH; |
| else |
| priv->bt_traffic_load = |
| coex->bt_traffic_load; |
| } else { |
| /* BT off */ |
| priv->bt_traffic_load = |
| IWL_BT_COEX_TRAFFIC_LOAD_NONE; |
| } |
| priv->bt_status = coex->bt_status; |
| queue_work(priv->shrd->workqueue, |
| &priv->bt_traffic_change_work); |
| } |
| } |
| |
| iwlagn_set_kill_msk(priv, uart_msg); |
| |
| /* FIXME: based on notification, adjust the prio_boost */ |
| |
| spin_lock_irqsave(&priv->shrd->lock, flags); |
| priv->bt_ci_compliance = coex->bt_ci_compliance; |
| spin_unlock_irqrestore(&priv->shrd->lock, flags); |
| } |
| |
| void iwlagn_bt_rx_handler_setup(struct iwl_priv *priv) |
| { |
| priv->rx_handlers[REPLY_BT_COEX_PROFILE_NOTIF] = |
| iwlagn_bt_coex_profile_notif; |
| } |
| |
| void iwlagn_bt_setup_deferred_work(struct iwl_priv *priv) |
| { |
| INIT_WORK(&priv->bt_traffic_change_work, |
| iwlagn_bt_traffic_change_work); |
| } |
| |
| void iwlagn_bt_cancel_deferred_work(struct iwl_priv *priv) |
| { |
| cancel_work_sync(&priv->bt_traffic_change_work); |
| } |
| |
| static bool is_single_rx_stream(struct iwl_priv *priv) |
| { |
| return priv->current_ht_config.smps == IEEE80211_SMPS_STATIC || |
| priv->current_ht_config.single_chain_sufficient; |
| } |
| |
| #define IWL_NUM_RX_CHAINS_MULTIPLE 3 |
| #define IWL_NUM_RX_CHAINS_SINGLE 2 |
| #define IWL_NUM_IDLE_CHAINS_DUAL 2 |
| #define IWL_NUM_IDLE_CHAINS_SINGLE 1 |
| |
| /* |
| * Determine how many receiver/antenna chains to use. |
| * |
| * More provides better reception via diversity. Fewer saves power |
| * at the expense of throughput, but only when not in powersave to |
| * start with. |
| * |
| * MIMO (dual stream) requires at least 2, but works better with 3. |
| * This does not determine *which* chains to use, just how many. |
| */ |
| static int iwl_get_active_rx_chain_count(struct iwl_priv *priv) |
| { |
| if (priv->cfg->bt_params && |
| priv->cfg->bt_params->advanced_bt_coexist && |
| (priv->bt_full_concurrent || |
| priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) { |
| /* |
| * only use chain 'A' in bt high traffic load or |
| * full concurrency mode |
| */ |
| return IWL_NUM_RX_CHAINS_SINGLE; |
| } |
| /* # of Rx chains to use when expecting MIMO. */ |
| if (is_single_rx_stream(priv)) |
| return IWL_NUM_RX_CHAINS_SINGLE; |
| else |
| return IWL_NUM_RX_CHAINS_MULTIPLE; |
| } |
| |
| /* |
| * When we are in power saving mode, unless device support spatial |
| * multiplexing power save, use the active count for rx chain count. |
| */ |
| static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt) |
| { |
| /* # Rx chains when idling, depending on SMPS mode */ |
| switch (priv->current_ht_config.smps) { |
| case IEEE80211_SMPS_STATIC: |
| case IEEE80211_SMPS_DYNAMIC: |
| return IWL_NUM_IDLE_CHAINS_SINGLE; |
| case IEEE80211_SMPS_OFF: |
| return active_cnt; |
| default: |
| WARN(1, "invalid SMPS mode %d", |
| priv->current_ht_config.smps); |
| return active_cnt; |
| } |
| } |
| |
| /* up to 4 chains */ |
| static u8 iwl_count_chain_bitmap(u32 chain_bitmap) |
| { |
| u8 res; |
| res = (chain_bitmap & BIT(0)) >> 0; |
| res += (chain_bitmap & BIT(1)) >> 1; |
| res += (chain_bitmap & BIT(2)) >> 2; |
| res += (chain_bitmap & BIT(3)) >> 3; |
| return res; |
| } |
| |
| /** |
| * iwlagn_set_rxon_chain - Set up Rx chain usage in "staging" RXON image |
| * |
| * Selects how many and which Rx receivers/antennas/chains to use. |
| * This should not be used for scan command ... it puts data in wrong place. |
| */ |
| void iwlagn_set_rxon_chain(struct iwl_priv *priv, struct iwl_rxon_context *ctx) |
| { |
| bool is_single = is_single_rx_stream(priv); |
| bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->shrd->status); |
| u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt; |
| u32 active_chains; |
| u16 rx_chain; |
| |
| /* Tell uCode which antennas are actually connected. |
| * Before first association, we assume all antennas are connected. |
| * Just after first association, iwl_chain_noise_calibration() |
| * checks which antennas actually *are* connected. */ |
| if (priv->chain_noise_data.active_chains) |
| active_chains = priv->chain_noise_data.active_chains; |
| else |
| active_chains = hw_params(priv).valid_rx_ant; |
| |
| if (priv->cfg->bt_params && |
| priv->cfg->bt_params->advanced_bt_coexist && |
| (priv->bt_full_concurrent || |
| priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) { |
| /* |
| * only use chain 'A' in bt high traffic load or |
| * full concurrency mode |
| */ |
| active_chains = first_antenna(active_chains); |
| } |
| |
| rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS; |
| |
| /* How many receivers should we use? */ |
| active_rx_cnt = iwl_get_active_rx_chain_count(priv); |
| idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt); |
| |
| |
| /* correct rx chain count according hw settings |
| * and chain noise calibration |
| */ |
| valid_rx_cnt = iwl_count_chain_bitmap(active_chains); |
| if (valid_rx_cnt < active_rx_cnt) |
| active_rx_cnt = valid_rx_cnt; |
| |
| if (valid_rx_cnt < idle_rx_cnt) |
| idle_rx_cnt = valid_rx_cnt; |
| |
| rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS; |
| rx_chain |= idle_rx_cnt << RXON_RX_CHAIN_CNT_POS; |
| |
| ctx->staging.rx_chain = cpu_to_le16(rx_chain); |
| |
| if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam) |
| ctx->staging.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK; |
| else |
| ctx->staging.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK; |
| |
| IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n", |
| ctx->staging.rx_chain, |
| active_rx_cnt, idle_rx_cnt); |
| |
| WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 || |
| active_rx_cnt < idle_rx_cnt); |
| } |
| |
| u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant, u8 valid) |
| { |
| int i; |
| u8 ind = ant; |
| |
| if (priv->band == IEEE80211_BAND_2GHZ && |
| priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH) |
| return 0; |
| |
| for (i = 0; i < RATE_ANT_NUM - 1; i++) { |
| ind = (ind + 1) < RATE_ANT_NUM ? ind + 1 : 0; |
| if (valid & BIT(ind)) |
| return ind; |
| } |
| return ant; |
| } |
| |
| /* notification wait support */ |
| void iwlagn_init_notification_wait(struct iwl_priv *priv, |
| struct iwl_notification_wait *wait_entry, |
| u8 cmd, |
| void (*fn)(struct iwl_priv *priv, |
| struct iwl_rx_packet *pkt, |
| void *data), |
| void *fn_data) |
| { |
| wait_entry->fn = fn; |
| wait_entry->fn_data = fn_data; |
| wait_entry->cmd = cmd; |
| wait_entry->triggered = false; |
| wait_entry->aborted = false; |
| |
| spin_lock_bh(&priv->notif_wait_lock); |
| list_add(&wait_entry->list, &priv->notif_waits); |
| spin_unlock_bh(&priv->notif_wait_lock); |
| } |
| |
| int iwlagn_wait_notification(struct iwl_priv *priv, |
| struct iwl_notification_wait *wait_entry, |
| unsigned long timeout) |
| { |
| int ret; |
| |
| ret = wait_event_timeout(priv->notif_waitq, |
| wait_entry->triggered || wait_entry->aborted, |
| timeout); |
| |
| spin_lock_bh(&priv->notif_wait_lock); |
| list_del(&wait_entry->list); |
| spin_unlock_bh(&priv->notif_wait_lock); |
| |
| if (wait_entry->aborted) |
| return -EIO; |
| |
| /* return value is always >= 0 */ |
| if (ret <= 0) |
| return -ETIMEDOUT; |
| return 0; |
| } |
| |
| void iwlagn_remove_notification(struct iwl_priv *priv, |
| struct iwl_notification_wait *wait_entry) |
| { |
| spin_lock_bh(&priv->notif_wait_lock); |
| list_del(&wait_entry->list); |
| spin_unlock_bh(&priv->notif_wait_lock); |
| } |