/* This function both allocates and initializes hw and priv. */
-struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg,
- struct ieee80211_ops *hw_ops)
+struct ieee80211_hw *iwl_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 =
- ieee80211_alloc_hw(sizeof(struct iwl_priv), hw_ops);
+ 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);
}
EXPORT_SYMBOL(iwl_alloc_all);
-/*
- * QoS support
-*/
-static void iwl_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_send_cmd_pdu_async(priv, ctx->qos_cmd,
- sizeof(struct iwl_qosparam_cmd),
- &ctx->qos_data.def_qos_parm, NULL);
-}
-
#define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
#define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv,
}
EXPORT_SYMBOL(iwlcore_free_geos);
-/*
- * iwlcore_tx_cmd_protection: Set rts/cts. 3945 and 4965 only share this
- * function.
- */
-void iwlcore_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(iwlcore_tx_cmd_protection);
-
-
static bool iwl_is_channel_extension(struct iwl_priv *priv,
enum ieee80211_band band,
u16 channel, u8 extension_chan_offset)
/* Cancel currently queued command. */
clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
+ /* W/A for WiFi/WiMAX coex and WiMAX own the RF */
+ if (priv->cfg->internal_wimax_coex &&
+ (!(iwl_read_prph(priv, APMG_CLK_CTRL_REG) &
+ APMS_CLK_VAL_MRB_FUNC_MODE) ||
+ (iwl_read_prph(priv, APMG_PS_CTRL_REG) &
+ APMG_PS_CTRL_VAL_RESET_REQ))) {
+ 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);
+ IWL_ERR(priv, "RF is used by WiMAX\n");
+ return;
+ }
+
IWL_ERR(priv, "Loaded firmware version: %s\n",
priv->hw->wiphy->fw_version);
int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
{
- int ret = 0;
- s8 prev_tx_power = priv->tx_power_user_lmt;
+ int ret;
+ s8 prev_tx_power;
+
+ 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;
if (tx_power < IWLAGN_TX_POWER_TARGET_POWER_MIN) {
IWL_WARN(priv,
return -EINVAL;
}
- if (priv->tx_power_user_lmt != tx_power)
- force = true;
+ if (!iwl_is_ready_rf(priv))
+ return -EIO;
- /* if nic is not up don't send command */
- if (iwl_is_ready_rf(priv)) {
- priv->tx_power_user_lmt = tx_power;
- if (force && priv->cfg->ops->lib->send_tx_power)
- ret = priv->cfg->ops->lib->send_tx_power(priv);
- else if (!priv->cfg->ops->lib->send_tx_power)
- ret = -EOPNOTSUPP;
- /*
- * if fail to set tx_power, restore the orig. tx power
- */
- if (ret)
- priv->tx_power_user_lmt = prev_tx_power;
+ /* scan complete use tx_power_next, need to be updated */
+ priv->tx_power_next = tx_power;
+ if (test_bit(STATUS_SCANNING, &priv->status) && !force) {
+ IWL_DEBUG_INFO(priv, "Deferring tx power set while scanning\n");
+ return 0;
}
- /*
- * Even this is an async host command, the command
- * will always report success from uCode
- * So once driver can placing the command into the queue
- * successfully, driver can use priv->tx_power_user_lmt
- * to reflect the current tx power
- */
- return ret;
-}
-EXPORT_SYMBOL(iwl_set_tx_power);
+ prev_tx_power = priv->tx_power_user_lmt;
+ priv->tx_power_user_lmt = tx_power;
-irqreturn_t iwl_isr_legacy(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);
+ ret = priv->cfg->ops->lib->send_tx_power(priv);
- /* 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 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;
}
-
- 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_enable_interrupts(priv);
- spin_unlock_irqrestore(&priv->lock, flags);
- return IRQ_NONE;
+ return ret;
}
-EXPORT_SYMBOL(iwl_isr_legacy);
+EXPORT_SYMBOL(iwl_set_tx_power);
void iwl_send_bt_config(struct iwl_priv *priv)
{
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");
}
EXPORT_SYMBOL_GPL(iwl_mac_tx_last_beacon);
-static void iwl_ht_conf(struct iwl_priv *priv,
- struct ieee80211_vif *vif)
+static int iwl_set_mode(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
{
- 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_rxon_ctx_from_vif(vif);
-
- IWL_DEBUG_MAC80211(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_MAC80211(priv, "leave\n");
-}
+ iwl_connection_init_rx_config(priv, ctx);
-static inline void iwl_set_no_assoc(struct iwl_priv *priv,
- struct ieee80211_vif *vif)
-{
- struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
+ if (priv->cfg->ops->hcmd->set_rxon_chain)
+ priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
- iwl_led_disassociate(priv);
- /*
- * 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;
- iwlcore_commit_rxon(priv, ctx);
+ return iwlcore_commit_rxon(priv, ctx);
}
-static void iwlcore_beacon_update(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif)
+static int iwl_setup_interface(struct iwl_priv *priv,
+ struct iwl_rxon_context *ctx)
{
- 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_ASSOC(priv, "enter\n");
+ struct ieee80211_vif *vif = ctx->vif;
+ int err;
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_ASSOC(priv, "leave\n");
-
- spin_unlock_irqrestore(&priv->lock, flags);
-
- if (!iwl_is_ready_rf(priv)) {
- IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
- return;
- }
-
- priv->cfg->ops->lib->post_associate(priv, priv->beacon_ctx->vif);
-}
-
-void iwl_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_rxon_ctx_from_vif(vif);
- int ret;
-
- IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes);
-
- if (!iwl_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_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_BEACON && vif->type == NL80211_IFTYPE_AP) {
- dev_kfree_skb(priv->beacon_skb);
- priv->beacon_skb = ieee80211_beacon_get(hw, vif);
- }
-
- if (changes & BSS_CHANGED_BEACON_INT && vif->type == NL80211_IFTYPE_AP)
- iwl_send_rxon_timing(priv, ctx);
-
- 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_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.
+ * 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.
*/
- if (vif->type == NL80211_IFTYPE_ADHOC && changes & BSS_CHANGED_BEACON)
- iwlcore_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_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_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;
-
- iwl_led_associate(priv);
-
- if (!iwl_is_rfkill(priv))
- priv->cfg->ops->lib->post_associate(priv, vif);
- } else
- iwl_set_no_assoc(priv, vif);
- }
-
- if (changes && iwl_is_associated_ctx(ctx) && bss_conf->aid) {
- IWL_DEBUG_MAC80211(priv, "Changes (%#x) while associated\n",
- changes);
- ret = iwl_send_rxon_assoc(priv, ctx);
- if (!ret) {
- /* Sync active_rxon with latest change. */
- memcpy((void *)&ctx->active,
- &ctx->staging,
- sizeof(struct iwl_rxon_cmd));
- }
- }
+ priv->iw_mode = vif->type;
- 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);
- iwl_led_associate(priv);
- iwlcore_config_ap(priv, vif);
- } else
- iwl_set_no_assoc(priv, vif);
- }
+ ctx->is_active = true;
- if (changes & BSS_CHANGED_IBSS) {
- ret = priv->cfg->ops->lib->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);
+ err = iwl_set_mode(priv, ctx);
+ if (err) {
+ if (!ctx->always_active)
+ ctx->is_active = false;
+ return err;
}
- if (changes & BSS_CHANGED_IDLE &&
- priv->cfg->ops->hcmd->set_pan_params) {
- if (priv->cfg->ops->hcmd->set_pan_params(priv))
- IWL_ERR(priv, "failed to update PAN params\n");
+ if (priv->cfg->bt_params && priv->cfg->bt_params->advanced_bt_coexist &&
+ vif->type == NL80211_IFTYPE_ADHOC) {
+ /*
+ * pretend to have high BT traffic as long as we
+ * are operating in IBSS mode, as this will cause
+ * the rate scaling etc. to behave as intended.
+ */
+ priv->bt_traffic_load = IWL_BT_COEX_TRAFFIC_LOAD_HIGH;
}
- mutex_unlock(&priv->mutex);
-
- IWL_DEBUG_MAC80211(priv, "leave\n");
-}
-EXPORT_SYMBOL(iwl_bss_info_changed);
-
-static int iwl_set_mode(struct iwl_priv *priv, struct ieee80211_vif *vif)
-{
- struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
-
- iwl_connection_init_rx_config(priv, ctx);
-
- if (priv->cfg->ops->hcmd->set_rxon_chain)
- priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
-
- return iwlcore_commit_rxon(priv, ctx);
+ return 0;
}
int iwl_mac_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
struct iwl_priv *priv = hw->priv;
struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
struct iwl_rxon_context *tmp, *ctx = NULL;
- int err = 0;
+ int err;
IWL_DEBUG_MAC80211(priv, "enter: type %d, addr %pM\n",
vif->type, vif->addr);
vif_priv->ctx = ctx;
ctx->vif = vif;
- /*
- * This variable will be correct only when there's just
- * a single context, but all code using it is for hardware
- * that supports only one context.
- */
- priv->iw_mode = vif->type;
-
- ctx->is_active = true;
- err = iwl_set_mode(priv, vif);
- if (err) {
- if (!ctx->always_active)
- ctx->is_active = false;
- goto out_err;
- }
-
- if (priv->cfg->bt_params &&
- priv->cfg->bt_params->advanced_bt_coexist &&
- vif->type == NL80211_IFTYPE_ADHOC) {
- /*
- * pretend to have high BT traffic as long as we
- * are operating in IBSS mode, as this will cause
- * the rate scaling etc. to behave as intended.
- */
- priv->bt_traffic_load = IWL_BT_COEX_TRAFFIC_LOAD_HIGH;
- }
-
- goto out;
+ err = iwl_setup_interface(priv, ctx);
+ if (!err)
+ goto out;
- out_err:
ctx->vif = NULL;
priv->iw_mode = NL80211_IFTYPE_STATION;
out:
}
EXPORT_SYMBOL(iwl_mac_add_interface);
-void iwl_mac_remove_interface(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif)
+static void iwl_teardown_interface(struct iwl_priv *priv,
+ struct ieee80211_vif *vif,
+ bool mode_change)
{
- struct iwl_priv *priv = hw->priv;
struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
- IWL_DEBUG_MAC80211(priv, "enter\n");
-
- mutex_lock(&priv->mutex);
-
- WARN_ON(ctx->vif != vif);
- ctx->vif = NULL;
+ lockdep_assert_held(&priv->mutex);
if (priv->scan_vif == vif) {
iwl_scan_cancel_timeout(priv, 200);
iwl_force_scan_end(priv);
}
- iwl_set_mode(priv, vif);
- if (!ctx->always_active)
- ctx->is_active = false;
+ if (!mode_change) {
+ iwl_set_mode(priv, ctx);
+ if (!ctx->always_active)
+ ctx->is_active = false;
+ }
/*
* When removing the IBSS interface, overwrite the
* both values are the same and zero.
*/
if (vif->type == NL80211_IFTYPE_ADHOC)
- priv->bt_traffic_load = priv->notif_bt_traffic_load;
-
- memset(priv->bssid, 0, ETH_ALEN);
- mutex_unlock(&priv->mutex);
-
- IWL_DEBUG_MAC80211(priv, "leave\n");
-
-}
-EXPORT_SYMBOL(iwl_mac_remove_interface);
-
-/**
- * iwl_mac_config - mac80211 config callback
- */
-int iwl_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;
-
- 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_get_channel_info(priv, channel->band, ch);
- if (!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 */
- ctx->ht.enabled = conf_is_ht(conf);
- 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_set_rxon_channel(priv, channel, ctx);
- iwl_set_rxon_ht(priv, ht_conf);
-
- iwl_set_flags_for_band(priv, ctx, channel->band,
- ctx->vif);
- }
-
- spin_unlock_irqrestore(&priv->lock, flags);
-
- if (priv->cfg->ops->lib->update_bcast_stations)
- ret = priv->cfg->ops->lib->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_set_rate(priv);
- }
-
- if (changed & (IEEE80211_CONF_CHANGE_PS |
- IEEE80211_CONF_CHANGE_IDLE)) {
- ret = iwl_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_set_tx_power(priv, conf->power_level, false);
- }
-
- if (!iwl_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)))
- iwlcore_commit_rxon(priv, ctx);
- else
- IWL_DEBUG_INFO(priv,
- "Not re-sending same RXON configuration.\n");
- }
-
-out:
- IWL_DEBUG_MAC80211(priv, "leave\n");
- mutex_unlock(&priv->mutex);
- return ret;
+ priv->bt_traffic_load = priv->last_bt_traffic_load;
}
-EXPORT_SYMBOL(iwl_mac_config);
-void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
+void iwl_mac_remove_interface(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif)
{
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];
+ struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
- 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_scan_cancel_timeout(priv, 100);
- if (!iwl_is_ready_rf(priv)) {
- IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
- mutex_unlock(&priv->mutex);
- return;
- }
+ mutex_lock(&priv->mutex);
- /* we are restarting association process
- * clear RXON_FILTER_ASSOC_MSK bit
- */
- ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
- iwlcore_commit_rxon(priv, ctx);
+ WARN_ON(ctx->vif != vif);
+ ctx->vif = NULL;
- iwl_set_rate(priv);
+ iwl_teardown_interface(priv, vif, false);
+ memset(priv->bssid, 0, ETH_ALEN);
mutex_unlock(&priv->mutex);
IWL_DEBUG_MAC80211(priv, "leave\n");
+
}
-EXPORT_SYMBOL(iwl_mac_reset_tsf);
+EXPORT_SYMBOL(iwl_mac_remove_interface);
int iwl_alloc_txq_mem(struct iwl_priv *priv)
{
return 0;
}
-/**
- * iwl_bg_monitor_recover - Timer callback to check for stuck queue and recover
- *
- * During normal condition (no queue is stuck), the timer is continually set to
- * execute every monitor_recover_period milliseconds after the last timer
- * expired. When the queue read_ptr is at the same place, the timer is
- * shorten to 100mSecs. This is
- * 1) to reduce the chance that the read_ptr may wrap around (not stuck)
- * 2) to detect the stuck queues quicker before the station and AP can
- * disassociate each other.
- *
- * This function monitors all the tx queues and recover from it if any
- * of the queues are stuck.
- * 1. It first check the cmd queue for stuck conditions. If it is stuck,
- * it will recover by resetting the firmware and return.
- * 2. Then, it checks for station association. If it associates it will check
- * other queues. If any queue is stuck, it will recover by resetting
- * the firmware.
- * Note: It the number of times the queue read_ptr to be at the same place to
- * be MAX_REPEAT+1 in order to consider to be stuck.
- */
+int iwl_mac_change_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ enum nl80211_iftype newtype, bool newp2p)
+{
+ struct iwl_priv *priv = hw->priv;
+ struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
+ struct iwl_rxon_context *tmp;
+ u32 interface_modes;
+ int err;
+
+ newtype = ieee80211_iftype_p2p(newtype, newp2p);
+
+ mutex_lock(&priv->mutex);
+
+ 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_teardown_interface(priv, vif, true);
+ vif->type = newtype;
+ err = iwl_setup_interface(priv, ctx);
+ WARN_ON(err);
+ /*
+ * We've switched internally, but submitting to the
+ * device may have failed for some reason. Mask this
+ * error, because otherwise mac80211 will not switch
+ * (and set the interface type back) and we'll be
+ * out of sync with it.
+ */
+ err = 0;
+
+ out:
+ mutex_unlock(&priv->mutex);
+ return err;
+}
+EXPORT_SYMBOL(iwl_mac_change_interface);
+
/*
- * The maximum number of times the read pointer of the tx queue at the
- * same place without considering to be stuck.
+ * 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.
*/
-#define MAX_REPEAT (2)
static int iwl_check_stuck_queue(struct iwl_priv *priv, int cnt)
{
- struct iwl_tx_queue *txq;
- struct iwl_queue *q;
+ struct iwl_tx_queue *txq = &priv->txq[cnt];
+ struct iwl_queue *q = &txq->q;
+ unsigned long timeout;
+ int ret;
- txq = &priv->txq[cnt];
- q = &txq->q;
- /* queue is empty, skip */
- if (q->read_ptr == q->write_ptr)
+ if (q->read_ptr == q->write_ptr) {
+ txq->time_stamp = jiffies;
return 0;
+ }
- if (q->read_ptr == q->last_read_ptr) {
- /* a queue has not been read from last time */
- if (q->repeat_same_read_ptr > MAX_REPEAT) {
- IWL_ERR(priv,
- "queue %d stuck %d time. Fw reload.\n",
- q->id, q->repeat_same_read_ptr);
- q->repeat_same_read_ptr = 0;
- iwl_force_reset(priv, IWL_FW_RESET, false);
- } else {
- q->repeat_same_read_ptr++;
- IWL_DEBUG_RADIO(priv,
- "queue %d, not read %d time\n",
- q->id,
- q->repeat_same_read_ptr);
- mod_timer(&priv->monitor_recover,
- jiffies + msecs_to_jiffies(
- IWL_ONE_HUNDRED_MSECS));
- return 1;
- }
- } else {
- q->last_read_ptr = q->read_ptr;
- q->repeat_same_read_ptr = 0;
+ timeout = txq->time_stamp +
+ msecs_to_jiffies(priv->cfg->base_params->wd_timeout);
+
+ if (time_after(jiffies, timeout)) {
+ IWL_ERR(priv, "Queue %d stuck for %u ms.\n",
+ q->id, priv->cfg->base_params->wd_timeout);
+ ret = iwl_force_reset(priv, IWL_FW_RESET, false);
+ return (ret == -EAGAIN) ? 0 : 1;
}
+
return 0;
}
-void iwl_bg_monitor_recover(unsigned long data)
+/*
+ * Making watchdog tick be a quarter of timeout assure we will
+ * discover the queue hung between timeout and 1.25*timeout
+ */
+#define IWL_WD_TICK(timeout) ((timeout) / 4)
+
+/*
+ * Watchdog timer callback, we check each tx queue for stuck, if if hung
+ * we reset the firmware. If everything is fine just rearm the timer.
+ */
+void iwl_bg_watchdog(unsigned long data)
{
struct iwl_priv *priv = (struct iwl_priv *)data;
int cnt;
+ unsigned long timeout;
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
return;
+ timeout = priv->cfg->base_params->wd_timeout;
+ if (timeout == 0)
+ return;
+
/* monitor and check for stuck cmd queue */
if (iwl_check_stuck_queue(priv, priv->cmd_queue))
return;
return;
}
}
- if (priv->cfg->base_params->monitor_recover_period) {
- /*
- * Reschedule the timer to occur in
- * priv->cfg->base_params->monitor_recover_period
- */
- mod_timer(&priv->monitor_recover, jiffies + msecs_to_jiffies(
- priv->cfg->base_params->monitor_recover_period));
- }
+
+ mod_timer(&priv->watchdog, jiffies +
+ msecs_to_jiffies(IWL_WD_TICK(timeout)));
}
-EXPORT_SYMBOL(iwl_bg_monitor_recover);
+EXPORT_SYMBOL(iwl_bg_watchdog);
+
+void iwl_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_setup_watchdog);
/*
* extended beacon time format
#ifdef CONFIG_PM
-int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
+int iwl_pci_suspend(struct device *device)
{
+ struct pci_dev *pdev = to_pci_dev(device);
struct iwl_priv *priv = pci_get_drvdata(pdev);
/*
*/
iwl_apm_stop(priv);
- pci_save_state(pdev);
- pci_disable_device(pdev);
- pci_set_power_state(pdev, PCI_D3hot);
-
return 0;
}
EXPORT_SYMBOL(iwl_pci_suspend);
-int iwl_pci_resume(struct pci_dev *pdev)
+int iwl_pci_resume(struct device *device)
{
+ struct pci_dev *pdev = to_pci_dev(device);
struct iwl_priv *priv = pci_get_drvdata(pdev);
- int ret;
bool hw_rfkill = false;
/*
*/
pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
- pci_set_power_state(pdev, PCI_D0);
- ret = pci_enable_device(pdev);
- if (ret)
- return ret;
- pci_restore_state(pdev);
iwl_enable_interrupts(priv);
if (!(iwl_read32(priv, CSR_GP_CNTRL) &
}
EXPORT_SYMBOL(iwl_pci_resume);
+const struct dev_pm_ops iwl_pm_ops = {
+ .suspend = iwl_pci_suspend,
+ .resume = iwl_pci_resume,
+ .freeze = iwl_pci_suspend,
+ .thaw = iwl_pci_resume,
+ .poweroff = iwl_pci_suspend,
+ .restore = iwl_pci_resume,
+};
+EXPORT_SYMBOL(iwl_pm_ops);
+
#endif /* CONFIG_PM */
projects / mv-sheeva.git / blobdiff