diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-core.c')
-rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-core.c | 711 |
1 files changed, 4 insertions, 707 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-core.c b/drivers/net/wireless/iwlwifi/iwl-core.c index 88ea31d9eb75..d7a8cde249ff 100644 --- a/drivers/net/wireless/iwlwifi/iwl-core.c +++ b/drivers/net/wireless/iwlwifi/iwl-core.c @@ -41,477 +41,6 @@ #include "iwl-agn.h" #include "iwl-trans.h" -const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; - -static bool iwl_is_channel_extension(struct iwl_priv *priv, - enum ieee80211_band band, - u16 channel, u8 extension_chan_offset) -{ - const struct iwl_channel_info *ch_info; - - ch_info = iwl_get_channel_info(priv, band, channel); - if (!is_channel_valid(ch_info)) - return false; - - if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE) - return !(ch_info->ht40_extension_channel & - IEEE80211_CHAN_NO_HT40PLUS); - else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW) - return !(ch_info->ht40_extension_channel & - IEEE80211_CHAN_NO_HT40MINUS); - - return false; -} - -bool iwl_is_ht40_tx_allowed(struct iwl_priv *priv, - struct iwl_rxon_context *ctx, - struct ieee80211_sta_ht_cap *ht_cap) -{ - if (!ctx->ht.enabled || !ctx->ht.is_40mhz) - return false; - - /* - * We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40 - * the bit will not set if it is pure 40MHz case - */ - if (ht_cap && !ht_cap->ht_supported) - return false; - -#ifdef CONFIG_IWLWIFI_DEBUGFS - if (priv->disable_ht40) - return false; -#endif - - return iwl_is_channel_extension(priv, priv->band, - le16_to_cpu(ctx->staging.channel), - ctx->ht.extension_chan_offset); -} - -static void _iwl_set_rxon_ht(struct iwl_priv *priv, - struct iwl_ht_config *ht_conf, - struct iwl_rxon_context *ctx) -{ - struct iwl_rxon_cmd *rxon = &ctx->staging; - - if (!ctx->ht.enabled) { - rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK | - RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK | - RXON_FLG_HT40_PROT_MSK | - RXON_FLG_HT_PROT_MSK); - return; - } - - /* FIXME: if the definition of ht.protection changed, the "translation" - * will be needed for rxon->flags - */ - rxon->flags |= cpu_to_le32(ctx->ht.protection << RXON_FLG_HT_OPERATING_MODE_POS); - - /* Set up channel bandwidth: - * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */ - /* clear the HT channel mode before set the mode */ - rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK | - RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK); - if (iwl_is_ht40_tx_allowed(priv, ctx, NULL)) { - /* pure ht40 */ - if (ctx->ht.protection == IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) { - rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40; - /* Note: control channel is opposite of extension channel */ - switch (ctx->ht.extension_chan_offset) { - case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: - rxon->flags &= ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK; - break; - case IEEE80211_HT_PARAM_CHA_SEC_BELOW: - rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK; - break; - } - } else { - /* Note: control channel is opposite of extension channel */ - switch (ctx->ht.extension_chan_offset) { - case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: - rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK); - rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED; - break; - case IEEE80211_HT_PARAM_CHA_SEC_BELOW: - rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK; - rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED; - break; - case IEEE80211_HT_PARAM_CHA_SEC_NONE: - default: - /* channel location only valid if in Mixed mode */ - IWL_ERR(priv, "invalid extension channel offset\n"); - break; - } - } - } else { - rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY; - } - - iwlagn_set_rxon_chain(priv, ctx); - - IWL_DEBUG_ASSOC(priv, "rxon flags 0x%X operation mode :0x%X " - "extension channel offset 0x%x\n", - le32_to_cpu(rxon->flags), ctx->ht.protection, - ctx->ht.extension_chan_offset); -} - -void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_config *ht_conf) -{ - struct iwl_rxon_context *ctx; - - for_each_context(priv, ctx) - _iwl_set_rxon_ht(priv, ht_conf, ctx); -} - -/** - * iwl_set_rxon_channel - Set the band and channel values in staging RXON - * @ch: requested channel as a pointer to struct ieee80211_channel - - * NOTE: Does not commit to the hardware; it sets appropriate bit fields - * in the staging RXON flag structure based on the ch->band - */ -void iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch, - struct iwl_rxon_context *ctx) -{ - enum ieee80211_band band = ch->band; - u16 channel = ch->hw_value; - - if ((le16_to_cpu(ctx->staging.channel) == channel) && - (priv->band == band)) - return; - - 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); - -} - -void iwl_set_flags_for_band(struct iwl_priv *priv, - struct iwl_rxon_context *ctx, - enum ieee80211_band band, - struct ieee80211_vif *vif) -{ - if (band == IEEE80211_BAND_5GHZ) { - ctx->staging.flags &= - ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK - | RXON_FLG_CCK_MSK); - ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK; - } else { - /* Copied from iwl_post_associate() */ - if (vif && vif->bss_conf.use_short_slot) - ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK; - else - ctx->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK; - - ctx->staging.flags |= RXON_FLG_BAND_24G_MSK; - ctx->staging.flags |= RXON_FLG_AUTO_DETECT_MSK; - ctx->staging.flags &= ~RXON_FLG_CCK_MSK; - } -} - -/* - * initialize rxon structure with default values from eeprom - */ -void iwl_connection_init_rx_config(struct iwl_priv *priv, - struct iwl_rxon_context *ctx) -{ - const struct iwl_channel_info *ch_info; - - memset(&ctx->staging, 0, sizeof(ctx->staging)); - - if (!ctx->vif) { - ctx->staging.dev_type = ctx->unused_devtype; - } else switch (ctx->vif->type) { - case NL80211_IFTYPE_AP: - ctx->staging.dev_type = ctx->ap_devtype; - break; - - case NL80211_IFTYPE_STATION: - ctx->staging.dev_type = ctx->station_devtype; - ctx->staging.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK; - break; - - case NL80211_IFTYPE_ADHOC: - ctx->staging.dev_type = ctx->ibss_devtype; - ctx->staging.flags = RXON_FLG_SHORT_PREAMBLE_MSK; - ctx->staging.filter_flags = RXON_FILTER_BCON_AWARE_MSK | - RXON_FILTER_ACCEPT_GRP_MSK; - break; - - default: - IWL_ERR(priv, "Unsupported interface type %d\n", - ctx->vif->type); - break; - } - -#if 0 - /* TODO: Figure out when short_preamble would be set and cache from - * that */ - if (!hw_to_local(priv->hw)->short_preamble) - ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; - else - ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; -#endif - - ch_info = iwl_get_channel_info(priv, priv->band, - le16_to_cpu(ctx->active.channel)); - - if (!ch_info) - ch_info = &priv->channel_info[0]; - - ctx->staging.channel = cpu_to_le16(ch_info->channel); - priv->band = ch_info->band; - - iwl_set_flags_for_band(priv, ctx, priv->band, ctx->vif); - - ctx->staging.ofdm_basic_rates = - (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF; - ctx->staging.cck_basic_rates = - (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF; - - /* clear both MIX and PURE40 mode flag */ - ctx->staging.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED | - RXON_FLG_CHANNEL_MODE_PURE_40); - if (ctx->vif) - memcpy(ctx->staging.node_addr, ctx->vif->addr, ETH_ALEN); - - ctx->staging.ofdm_ht_single_stream_basic_rates = 0xff; - ctx->staging.ofdm_ht_dual_stream_basic_rates = 0xff; - ctx->staging.ofdm_ht_triple_stream_basic_rates = 0xff; -} - -void iwl_set_rate(struct iwl_priv *priv) -{ - const struct ieee80211_supported_band *hw = NULL; - struct ieee80211_rate *rate; - struct iwl_rxon_context *ctx; - int i; - - hw = iwl_get_hw_mode(priv, priv->band); - if (!hw) { - IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n"); - return; - } - - priv->active_rate = 0; - - for (i = 0; i < hw->n_bitrates; i++) { - rate = &(hw->bitrates[i]); - if (rate->hw_value < IWL_RATE_COUNT_LEGACY) - priv->active_rate |= (1 << rate->hw_value); - } - - IWL_DEBUG_RATE(priv, "Set active_rate = %0x\n", priv->active_rate); - - for_each_context(priv, ctx) { - ctx->staging.cck_basic_rates = - (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF; - - ctx->staging.ofdm_basic_rates = - (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF; - } -} - -void iwl_chswitch_done(struct iwl_priv *priv, bool is_success) -{ - /* - * MULTI-FIXME - * See iwlagn_mac_channel_switch. - */ - struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; - - if (test_bit(STATUS_EXIT_PENDING, &priv->status)) - return; - - if (test_and_clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status)) - ieee80211_chswitch_done(ctx->vif, is_success); -} - -#ifdef CONFIG_IWLWIFI_DEBUG -void iwl_print_rx_config_cmd(struct iwl_priv *priv, - enum iwl_rxon_context_id ctxid) -{ - struct iwl_rxon_context *ctx = &priv->contexts[ctxid]; - struct iwl_rxon_cmd *rxon = &ctx->staging; - - IWL_DEBUG_RADIO(priv, "RX CONFIG:\n"); - iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon)); - IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n", le16_to_cpu(rxon->channel)); - IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags)); - IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n", - le32_to_cpu(rxon->filter_flags)); - IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type); - IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n", - rxon->ofdm_basic_rates); - IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates); - IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr); - IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr); - IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id)); -} -#endif - -void iwlagn_fw_error(struct iwl_priv *priv, bool ondemand) -{ - unsigned int reload_msec; - unsigned long reload_jiffies; - -#ifdef CONFIG_IWLWIFI_DEBUG - if (iwl_have_debug_level(IWL_DL_FW_ERRORS)) - iwl_print_rx_config_cmd(priv, IWL_RXON_CTX_BSS); -#endif - - /* uCode is no longer loaded. */ - priv->ucode_loaded = false; - - /* 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->shrd->status); - - iwl_abort_notification_waits(&priv->notif_wait); - - /* Keep the restart process from trying to send host - * commands by clearing the ready bit */ - clear_bit(STATUS_READY, &priv->status); - - wake_up(&trans(priv)->wait_command_queue); - - if (!ondemand) { - /* - * If firmware keep reloading, then it indicate something - * serious wrong and firmware having problem to recover - * from it. Instead of keep trying which will fill the syslog - * and hang the system, let's just stop it - */ - reload_jiffies = jiffies; - reload_msec = jiffies_to_msecs((long) reload_jiffies - - (long) priv->reload_jiffies); - priv->reload_jiffies = reload_jiffies; - if (reload_msec <= IWL_MIN_RELOAD_DURATION) { - priv->reload_count++; - if (priv->reload_count >= IWL_MAX_CONTINUE_RELOAD_CNT) { - IWL_ERR(priv, "BUG_ON, Stop restarting\n"); - return; - } - } else - priv->reload_count = 0; - } - - if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) { - if (iwlagn_mod_params.restart_fw) { - IWL_DEBUG_FW_ERRORS(priv, - "Restarting adapter due to uCode error.\n"); - queue_work(priv->workqueue, &priv->restart); - } else - IWL_DEBUG_FW_ERRORS(priv, - "Detected FW error, but not restarting\n"); - } -} - -int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force) -{ - int ret; - s8 prev_tx_power; - bool defer; - struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; - - lockdep_assert_held(&priv->mutex); - - if (priv->tx_power_user_lmt == tx_power && !force) - return 0; - - if (tx_power < IWLAGN_TX_POWER_TARGET_POWER_MIN) { - IWL_WARN(priv, - "Requested user TXPOWER %d below lower limit %d.\n", - tx_power, - IWLAGN_TX_POWER_TARGET_POWER_MIN); - return -EINVAL; - } - - if (tx_power > priv->tx_power_device_lmt) { - IWL_WARN(priv, - "Requested user TXPOWER %d above upper limit %d.\n", - tx_power, priv->tx_power_device_lmt); - return -EINVAL; - } - - if (!iwl_is_ready_rf(priv)) - return -EIO; - - /* scan complete and commit_rxon use tx_power_next value, - * it always need to be updated for newest request */ - priv->tx_power_next = tx_power; - - /* do not set tx power when scanning or channel changing */ - defer = test_bit(STATUS_SCANNING, &priv->status) || - memcmp(&ctx->active, &ctx->staging, sizeof(ctx->staging)); - if (defer && !force) { - IWL_DEBUG_INFO(priv, "Deferring tx power set\n"); - return 0; - } - - prev_tx_power = priv->tx_power_user_lmt; - priv->tx_power_user_lmt = tx_power; - - ret = iwlagn_send_tx_power(priv); - - /* if fail to set tx_power, restore the orig. tx power */ - if (ret) { - priv->tx_power_user_lmt = prev_tx_power; - priv->tx_power_next = prev_tx_power; - } - return ret; -} - -void iwl_send_bt_config(struct iwl_priv *priv) -{ - struct iwl_bt_cmd bt_cmd = { - .lead_time = BT_LEAD_TIME_DEF, - .max_kill = BT_MAX_KILL_DEF, - .kill_ack_mask = 0, - .kill_cts_mask = 0, - }; - - if (!iwlagn_mod_params.bt_coex_active) - bt_cmd.flags = BT_COEX_DISABLE; - else - bt_cmd.flags = BT_COEX_ENABLE; - - priv->bt_enable_flag = bt_cmd.flags; - IWL_DEBUG_INFO(priv, "BT coex %s\n", - (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active"); - - if (iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG, - CMD_SYNC, sizeof(struct iwl_bt_cmd), &bt_cmd)) - IWL_ERR(priv, "failed to send BT Coex Config\n"); -} - -int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear) -{ - struct iwl_statistics_cmd statistics_cmd = { - .configuration_flags = - clear ? IWL_STATS_CONF_CLEAR_STATS : 0, - }; - - if (flags & CMD_ASYNC) - return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD, - CMD_ASYNC, - sizeof(struct iwl_statistics_cmd), - &statistics_cmd); - else - return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD, - CMD_SYNC, - sizeof(struct iwl_statistics_cmd), - &statistics_cmd); -} - - #ifdef CONFIG_IWLWIFI_DEBUGFS @@ -611,6 +140,7 @@ void iwl_dbg_log_rx_data_frame(struct iwl_priv *priv, const char *get_mgmt_string(int cmd) { +#define IWL_CMD(x) case x: return #x switch (cmd) { IWL_CMD(MANAGEMENT_ASSOC_REQ); IWL_CMD(MANAGEMENT_ASSOC_RESP); @@ -628,10 +158,12 @@ const char *get_mgmt_string(int cmd) return "UNKNOWN"; } +#undef IWL_CMD } const char *get_ctrl_string(int cmd) { +#define IWL_CMD(x) case x: return #x switch (cmd) { IWL_CMD(CONTROL_BACK_REQ); IWL_CMD(CONTROL_BACK); @@ -645,6 +177,7 @@ const char *get_ctrl_string(int cmd) return "UNKNOWN"; } +#undef IWL_CMD } void iwl_clear_traffic_stats(struct iwl_priv *priv) @@ -746,80 +279,6 @@ void iwl_update_stats(struct iwl_priv *priv, bool is_tx, __le16 fc, u16 len) } #endif -static void iwl_force_rf_reset(struct iwl_priv *priv) -{ - if (test_bit(STATUS_EXIT_PENDING, &priv->status)) - return; - - if (!iwl_is_any_associated(priv)) { - IWL_DEBUG_SCAN(priv, "force reset rejected: not associated\n"); - return; - } - /* - * There is no easy and better way to force reset the radio, - * the only known method is switching channel which will force to - * reset and tune the radio. - * Use internal short scan (single channel) operation to should - * achieve this objective. - * Driver should reset the radio when number of consecutive missed - * beacon, or any other uCode error condition detected. - */ - IWL_DEBUG_INFO(priv, "perform radio reset.\n"); - iwl_internal_short_hw_scan(priv); -} - - -int iwl_force_reset(struct iwl_priv *priv, int mode, bool external) -{ - struct iwl_force_reset *force_reset; - - if (test_bit(STATUS_EXIT_PENDING, &priv->status)) - return -EINVAL; - - if (mode >= IWL_MAX_FORCE_RESET) { - IWL_DEBUG_INFO(priv, "invalid reset request.\n"); - return -EINVAL; - } - force_reset = &priv->force_reset[mode]; - force_reset->reset_request_count++; - if (!external) { - if (force_reset->last_force_reset_jiffies && - time_after(force_reset->last_force_reset_jiffies + - force_reset->reset_duration, jiffies)) { - IWL_DEBUG_INFO(priv, "force reset rejected\n"); - force_reset->reset_reject_count++; - return -EAGAIN; - } - } - force_reset->reset_success_count++; - force_reset->last_force_reset_jiffies = jiffies; - IWL_DEBUG_INFO(priv, "perform force reset (%d)\n", mode); - switch (mode) { - case IWL_RF_RESET: - iwl_force_rf_reset(priv); - break; - case IWL_FW_RESET: - /* - * if the request is from external(ex: debugfs), - * then always perform the request in regardless the module - * parameter setting - * if the request is from internal (uCode error or driver - * detect failure), then fw_restart module parameter - * need to be check before performing firmware reload - */ - if (!external && !iwlagn_mod_params.restart_fw) { - IWL_DEBUG_INFO(priv, "Cancel firmware reload based on " - "module parameter setting\n"); - break; - } - IWL_ERR(priv, "On demand firmware reload\n"); - iwlagn_fw_error(priv, true); - break; - } - return 0; -} - - int iwl_cmd_echo_test(struct iwl_priv *priv) { int ret; @@ -836,165 +295,3 @@ int iwl_cmd_echo_test(struct iwl_priv *priv) IWL_DEBUG_INFO(priv, "echo testing pass\n"); return ret; } - -static inline int iwl_check_stuck_queue(struct iwl_priv *priv, int txq) -{ - if (iwl_trans_check_stuck_queue(trans(priv), txq)) { - int ret; - ret = iwl_force_reset(priv, IWL_FW_RESET, false); - return (ret == -EAGAIN) ? 0 : 1; - } - return 0; -} - -/* - * Making watchdog tick be a quarter of timeout assure we will - * discover the queue hung between timeout and 1.25*timeout - */ -#define IWL_WD_TICK(timeout) ((timeout) / 4) - -/* - * Watchdog timer callback, we check each tx queue for stuck, if if hung - * we reset the firmware. If everything is fine just rearm the timer. - */ -void iwl_bg_watchdog(unsigned long data) -{ - struct iwl_priv *priv = (struct iwl_priv *)data; - int cnt; - unsigned long timeout; - - if (test_bit(STATUS_EXIT_PENDING, &priv->status)) - return; - - if (iwl_is_rfkill(priv)) - return; - - timeout = hw_params(priv).wd_timeout; - if (timeout == 0) - return; - - /* monitor and check for stuck queues */ - for (cnt = 0; cnt < cfg(priv)->base_params->num_of_queues; cnt++) - if (iwl_check_stuck_queue(priv, cnt)) - return; - - mod_timer(&priv->watchdog, jiffies + - msecs_to_jiffies(IWL_WD_TICK(timeout))); -} - -void iwl_setup_watchdog(struct iwl_priv *priv) -{ - unsigned int timeout = hw_params(priv).wd_timeout; - - if (!iwlagn_mod_params.wd_disable) { - /* use system default */ - if (timeout && !cfg(priv)->base_params->wd_disable) - mod_timer(&priv->watchdog, - jiffies + - msecs_to_jiffies(IWL_WD_TICK(timeout))); - else - del_timer(&priv->watchdog); - } else { - /* module parameter overwrite default configuration */ - if (timeout && iwlagn_mod_params.wd_disable == 2) - mod_timer(&priv->watchdog, - jiffies + - msecs_to_jiffies(IWL_WD_TICK(timeout))); - else - del_timer(&priv->watchdog); - } -} - -/** - * iwl_beacon_time_mask_low - mask of lower 32 bit of beacon time - * @priv -- pointer to iwl_priv data structure - * @tsf_bits -- number of bits need to shift for masking) - */ -static inline u32 iwl_beacon_time_mask_low(struct iwl_priv *priv, - u16 tsf_bits) -{ - return (1 << tsf_bits) - 1; -} - -/** - * iwl_beacon_time_mask_high - mask of higher 32 bit of beacon time - * @priv -- pointer to iwl_priv data structure - * @tsf_bits -- number of bits need to shift for masking) - */ -static inline u32 iwl_beacon_time_mask_high(struct iwl_priv *priv, - u16 tsf_bits) -{ - return ((1 << (32 - tsf_bits)) - 1) << tsf_bits; -} - -/* - * extended beacon time format - * time in usec will be changed into a 32-bit value in extended:internal format - * the extended part is the beacon counts - * the internal part is the time in usec within one beacon interval - */ -u32 iwl_usecs_to_beacons(struct iwl_priv *priv, u32 usec, u32 beacon_interval) -{ - u32 quot; - u32 rem; - u32 interval = beacon_interval * TIME_UNIT; - - if (!interval || !usec) - return 0; - - quot = (usec / interval) & - (iwl_beacon_time_mask_high(priv, IWLAGN_EXT_BEACON_TIME_POS) >> - IWLAGN_EXT_BEACON_TIME_POS); - rem = (usec % interval) & iwl_beacon_time_mask_low(priv, - IWLAGN_EXT_BEACON_TIME_POS); - - return (quot << IWLAGN_EXT_BEACON_TIME_POS) + rem; -} - -/* base is usually what we get from ucode with each received frame, - * the same as HW timer counter counting down - */ -__le32 iwl_add_beacon_time(struct iwl_priv *priv, u32 base, - u32 addon, u32 beacon_interval) -{ - u32 base_low = base & iwl_beacon_time_mask_low(priv, - IWLAGN_EXT_BEACON_TIME_POS); - u32 addon_low = addon & iwl_beacon_time_mask_low(priv, - IWLAGN_EXT_BEACON_TIME_POS); - u32 interval = beacon_interval * TIME_UNIT; - u32 res = (base & iwl_beacon_time_mask_high(priv, - IWLAGN_EXT_BEACON_TIME_POS)) + - (addon & iwl_beacon_time_mask_high(priv, - IWLAGN_EXT_BEACON_TIME_POS)); - - if (base_low > addon_low) - res += base_low - addon_low; - else if (base_low < addon_low) { - res += interval + base_low - addon_low; - res += (1 << IWLAGN_EXT_BEACON_TIME_POS); - } else - res += (1 << IWLAGN_EXT_BEACON_TIME_POS); - - return cpu_to_le32(res); -} - -void iwl_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state) -{ - struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); - - if (state) - 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, state); -} - -void iwl_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb) -{ - struct ieee80211_tx_info *info; - - info = IEEE80211_SKB_CB(skb); - kmem_cache_free(iwl_tx_cmd_pool, (info->driver_data[1])); - dev_kfree_skb_any(skb); -} |