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path: root/drivers/net/wireless/iwlwifi/iwl-core.c
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Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-core.c')
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-core.c711
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);
-}