Merge tag 'iwlwifi-for-john-2014-10-23' of git://git.kernel.org/pub/scm/linux/kernel...
authorJohn W. Linville <linville@tuxdriver.com>
Mon, 27 Oct 2014 17:35:59 +0000 (13:35 -0400)
committerJohn W. Linville <linville@tuxdriver.com>
Mon, 27 Oct 2014 17:35:59 +0000 (13:35 -0400)
Emmanuel Grumbach <egrumbach@gmail.com> says:

"I revert here a patch that caused interoperability issues.
dvm gets a fix for a bug that was reported by many users.
Two minor fixes for BT Coex and platform power fix that helps
reducing latency when the PCIe link goes to low power states."

Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 files changed:
drivers/net/wireless/iwlwifi/dvm/mac80211.c
drivers/net/wireless/iwlwifi/iwl-8000.c
drivers/net/wireless/iwlwifi/iwl-trans.h
drivers/net/wireless/iwlwifi/mvm/coex.c
drivers/net/wireless/iwlwifi/mvm/coex_legacy.c
drivers/net/wireless/iwlwifi/mvm/fw-api-power.h
drivers/net/wireless/iwlwifi/mvm/fw-api.h
drivers/net/wireless/iwlwifi/mvm/fw.c
drivers/net/wireless/iwlwifi/mvm/mac80211.c
drivers/net/wireless/iwlwifi/mvm/ops.c
drivers/net/wireless/iwlwifi/mvm/scan.c
drivers/net/wireless/iwlwifi/mvm/time-event.c
drivers/net/wireless/iwlwifi/mvm/tx.c
drivers/net/wireless/iwlwifi/pcie/trans.c

index 2364a3c..cae692f 100644 (file)
@@ -1095,6 +1095,7 @@ static void iwlagn_mac_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
                             u32 queues, bool drop)
 {
        struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
+       u32 scd_queues;
 
        mutex_lock(&priv->mutex);
        IWL_DEBUG_MAC80211(priv, "enter\n");
@@ -1108,18 +1109,19 @@ static void iwlagn_mac_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
                goto done;
        }
 
-       /*
-        * mac80211 will not push any more frames for transmit
-        * until the flush is completed
-        */
-       if (drop) {
-               IWL_DEBUG_MAC80211(priv, "send flush command\n");
-               if (iwlagn_txfifo_flush(priv, 0)) {
-                       IWL_ERR(priv, "flush request fail\n");
-                       goto done;
-               }
+       scd_queues = BIT(priv->cfg->base_params->num_of_queues) - 1;
+       scd_queues &= ~(BIT(IWL_IPAN_CMD_QUEUE_NUM) |
+                       BIT(IWL_DEFAULT_CMD_QUEUE_NUM));
+
+       if (vif)
+               scd_queues &= ~BIT(vif->hw_queue[IEEE80211_AC_VO]);
+
+       IWL_DEBUG_TX_QUEUES(priv, "Flushing SCD queues: 0x%x\n", scd_queues);
+       if (iwlagn_txfifo_flush(priv, scd_queues)) {
+               IWL_ERR(priv, "flush request fail\n");
+               goto done;
        }
-       IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
+       IWL_DEBUG_TX_QUEUES(priv, "wait transmit/flush all frames\n");
        iwl_trans_wait_tx_queue_empty(priv->trans, 0xffffffff);
 done:
        mutex_unlock(&priv->mutex);
index e435148..d2b7234 100644 (file)
@@ -82,7 +82,8 @@
 #define IWL8000_TX_POWER_VERSION       0xffff /* meaningless */
 
 #define IWL8000_FW_PRE "iwlwifi-8000"
-#define IWL8000_MODULE_FIRMWARE(api) IWL8000_FW_PRE __stringify(api) ".ucode"
+#define IWL8000_MODULE_FIRMWARE(api) \
+       IWL8000_FW_PRE "-" __stringify(api) ".ucode"
 
 #define NVM_HW_SECTION_NUM_FAMILY_8000         10
 #define DEFAULT_NVM_FILE_FAMILY_8000           "iwl_nvm_8000.bin"
index 9eb8524..d8fc548 100644 (file)
@@ -563,6 +563,7 @@ enum iwl_trans_state {
  *     Set during transport allocation.
  * @hw_id_str: a string with info about HW ID. Set during transport allocation.
  * @pm_support: set to true in start_hw if link pm is supported
+ * @ltr_enabled: set to true if the LTR is enabled
  * @dev_cmd_pool: pool for Tx cmd allocation - for internal use only.
  *     The user should use iwl_trans_{alloc,free}_tx_cmd.
  * @dev_cmd_headroom: room needed for the transport's private use before the
@@ -589,6 +590,7 @@ struct iwl_trans {
        u8 rx_mpdu_cmd, rx_mpdu_cmd_hdr_size;
 
        bool pm_support;
+       bool ltr_enabled;
 
        /* The following fields are internal only */
        struct kmem_cache *dev_cmd_pool;
index 8df2021..da2ffb7 100644 (file)
@@ -303,8 +303,8 @@ static const __le64 iwl_ci_mask[][3] = {
 };
 
 static const __le32 iwl_bt_mprio_lut[BT_COEX_MULTI_PRIO_LUT_SIZE] = {
-       cpu_to_le32(0x28412201),
-       cpu_to_le32(0x11118451),
+       cpu_to_le32(0x2e402280),
+       cpu_to_le32(0x7711a751),
 };
 
 struct corunning_block_luts {
index 585c0ab..8a1d2f3 100644 (file)
@@ -291,8 +291,8 @@ static const __le64 iwl_ci_mask[][3] = {
 };
 
 static const __le32 iwl_bt_mprio_lut[BT_COEX_MULTI_PRIO_LUT_SIZE] = {
-       cpu_to_le32(0x28412201),
-       cpu_to_le32(0x11118451),
+       cpu_to_le32(0x2e402280),
+       cpu_to_le32(0x7711a751),
 };
 
 struct corunning_block_luts {
index 27dd863..2fd8ad4 100644 (file)
 
 /* Power Management Commands, Responses, Notifications */
 
+/**
+ * enum iwl_ltr_config_flags - masks for LTR config command flags
+ * @LTR_CFG_FLAG_FEATURE_ENABLE: Feature operational status
+ * @LTR_CFG_FLAG_HW_DIS_ON_SHADOW_REG_ACCESS: allow LTR change on shadow
+ *     memory access
+ * @LTR_CFG_FLAG_HW_EN_SHRT_WR_THROUGH: allow LTR msg send on ANY LTR
+ *     reg change
+ * @LTR_CFG_FLAG_HW_DIS_ON_D0_2_D3: allow LTR msg send on transition from
+ *     D0 to D3
+ * @LTR_CFG_FLAG_SW_SET_SHORT: fixed static short LTR register
+ * @LTR_CFG_FLAG_SW_SET_LONG: fixed static short LONG register
+ * @LTR_CFG_FLAG_DENIE_C10_ON_PD: allow going into C10 on PD
+ */
+enum iwl_ltr_config_flags {
+       LTR_CFG_FLAG_FEATURE_ENABLE = BIT(0),
+       LTR_CFG_FLAG_HW_DIS_ON_SHADOW_REG_ACCESS = BIT(1),
+       LTR_CFG_FLAG_HW_EN_SHRT_WR_THROUGH = BIT(2),
+       LTR_CFG_FLAG_HW_DIS_ON_D0_2_D3 = BIT(3),
+       LTR_CFG_FLAG_SW_SET_SHORT = BIT(4),
+       LTR_CFG_FLAG_SW_SET_LONG = BIT(5),
+       LTR_CFG_FLAG_DENIE_C10_ON_PD = BIT(6),
+};
+
+/**
+ * struct iwl_ltr_config_cmd - configures the LTR
+ * @flags: See %enum iwl_ltr_config_flags
+ */
+struct iwl_ltr_config_cmd {
+       __le32 flags;
+       __le32 static_long;
+       __le32 static_short;
+} __packed;
+
 /* Radio LP RX Energy Threshold measured in dBm */
 #define POWER_LPRX_RSSI_THRESHOLD      75
 #define POWER_LPRX_RSSI_THRESHOLD_MAX  94
 #define POWER_LPRX_RSSI_THRESHOLD_MIN  30
 
 /**
- * enum iwl_scan_flags - masks for power table command flags
+ * enum iwl_power_flags - masks for power table command flags
  * @POWER_FLAGS_POWER_SAVE_ENA_MSK: '1' Allow to save power by turning off
  *             receiver and transmitter. '0' - does not allow.
  * @POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK: '0' Driver disables power management,
index 667a922..c62575d 100644 (file)
@@ -157,6 +157,7 @@ enum {
        /* Power - legacy power table command */
        POWER_TABLE_CMD = 0x77,
        PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION = 0x78,
+       LTR_CONFIG = 0xee,
 
        /* Thermal Throttling*/
        REPLY_THERMAL_MNG_BACKOFF = 0x7e,
index 23fd711..e0d9f19 100644 (file)
@@ -480,6 +480,15 @@ int iwl_mvm_up(struct iwl_mvm *mvm)
        /* Initialize tx backoffs to the minimal possible */
        iwl_mvm_tt_tx_backoff(mvm, 0);
 
+       if (mvm->trans->ltr_enabled) {
+               struct iwl_ltr_config_cmd cmd = {
+                       .flags = cpu_to_le32(LTR_CFG_FLAG_FEATURE_ENABLE),
+               };
+
+               WARN_ON(iwl_mvm_send_cmd_pdu(mvm, LTR_CONFIG, 0,
+                                            sizeof(cmd), &cmd));
+       }
+
        ret = iwl_mvm_power_update_device(mvm);
        if (ret)
                goto error;
index c7a73c6..585fe5b 100644 (file)
@@ -526,7 +526,8 @@ static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
        }
 
        if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
-           !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status))
+           !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
+           !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
                goto drop;
 
        /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
@@ -1734,6 +1735,13 @@ iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
        if (changes & BSS_CHANGED_BEACON &&
            iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
                IWL_WARN(mvm, "Failed updating beacon data\n");
+
+       if (changes & BSS_CHANGED_TXPOWER) {
+               IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
+                               bss_conf->txpower);
+               iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
+       }
+
 }
 
 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
@@ -2367,14 +2375,19 @@ static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
        /* Set the node address */
        memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
 
+       lockdep_assert_held(&mvm->mutex);
+
+       spin_lock_bh(&mvm->time_event_lock);
+
+       if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
+               spin_unlock_bh(&mvm->time_event_lock);
+               return -EIO;
+       }
+
        te_data->vif = vif;
        te_data->duration = duration;
        te_data->id = HOT_SPOT_CMD;
 
-       lockdep_assert_held(&mvm->mutex);
-
-       spin_lock_bh(&mvm->time_event_lock);
-       list_add_tail(&te_data->list, &mvm->time_event_list);
        spin_unlock_bh(&mvm->time_event_lock);
 
        /*
@@ -2430,22 +2443,23 @@ static int iwl_mvm_roc(struct ieee80211_hw *hw,
        IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
                           duration, type);
 
+       mutex_lock(&mvm->mutex);
+
        switch (vif->type) {
        case NL80211_IFTYPE_STATION:
                /* Use aux roc framework (HS20) */
                ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
                                               vif, duration);
-               return ret;
+               goto out_unlock;
        case NL80211_IFTYPE_P2P_DEVICE:
                /* handle below */
                break;
        default:
                IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
-               return -EINVAL;
+               ret = -EINVAL;
+               goto out_unlock;
        }
 
-       mutex_lock(&mvm->mutex);
-
        for (i = 0; i < NUM_PHY_CTX; i++) {
                phy_ctxt = &mvm->phy_ctxts[i];
                if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
index 15aa298..48cb25a 100644 (file)
@@ -336,6 +336,7 @@ static const char *const iwl_mvm_cmd_strings[REPLY_MAX] = {
        CMD(DTS_MEASUREMENT_NOTIFICATION),
        CMD(REPLY_THERMAL_MNG_BACKOFF),
        CMD(MAC_PM_POWER_TABLE),
+       CMD(LTR_CONFIG),
        CMD(BT_COEX_CI),
        CMD(BT_COEX_UPDATE_SW_BOOST),
        CMD(BT_COEX_UPDATE_CORUN_LUT),
index cb85e63..b280d5d 100644 (file)
@@ -459,7 +459,8 @@ int iwl_mvm_scan_request(struct iwl_mvm *mvm,
                                basic_ssid ? 1 : 0);
 
        cmd->tx_cmd.tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL |
-                                          TX_CMD_FLG_BT_DIS);
+                                          3 << TX_CMD_FLG_BT_PRIO_POS);
+
        cmd->tx_cmd.sta_id = mvm->aux_sta.sta_id;
        cmd->tx_cmd.life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
        cmd->tx_cmd.rate_n_flags =
index b7f9e61..6dfad23 100644 (file)
@@ -305,8 +305,8 @@ static int iwl_mvm_aux_roc_te_handle_notif(struct iwl_mvm *mvm,
                te_data->running = false;
                te_data->vif = NULL;
                te_data->uid = 0;
+               te_data->id = TE_MAX;
        } else if (le32_to_cpu(notif->action) == TE_V2_NOTIF_HOST_EVENT_START) {
-               set_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status);
                set_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status);
                te_data->running = true;
                ieee80211_ready_on_channel(mvm->hw); /* Start TE */
index 1cb793a..c6a517c 100644 (file)
@@ -175,14 +175,10 @@ static void iwl_mvm_set_tx_cmd_rate(struct iwl_mvm *mvm,
 
        /*
         * for data packets, rate info comes from the table inside the fw. This
-        * table is controlled by LINK_QUALITY commands. Exclude ctrl port
-        * frames like EAPOLs which should be treated as mgmt frames. This
-        * avoids them being sent initially in high rates which increases the
-        * chances for completion of the 4-Way handshake.
+        * table is controlled by LINK_QUALITY commands
         */
 
-       if (ieee80211_is_data(fc) && sta &&
-           !(info->control.flags & IEEE80211_TX_CTRL_PORT_CTRL_PROTO)) {
+       if (ieee80211_is_data(fc) && sta) {
                tx_cmd->initial_rate_index = 0;
                tx_cmd->tx_flags |= cpu_to_le32(TX_CMD_FLG_STA_RATE);
                return;
index 1393bac..3781b02 100644 (file)
@@ -174,6 +174,7 @@ static void iwl_pcie_apm_config(struct iwl_trans *trans)
 {
        struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
        u16 lctl;
+       u16 cap;
 
        /*
         * HW bug W/A for instability in PCIe bus L0S->L1 transition.
@@ -184,16 +185,17 @@ static void iwl_pcie_apm_config(struct iwl_trans *trans)
         *    power savings, even without L1.
         */
        pcie_capability_read_word(trans_pcie->pci_dev, PCI_EXP_LNKCTL, &lctl);
-       if (lctl & PCI_EXP_LNKCTL_ASPM_L1) {
-               /* L1-ASPM enabled; disable(!) L0S */
+       if (lctl & PCI_EXP_LNKCTL_ASPM_L1)
                iwl_set_bit(trans, CSR_GIO_REG, CSR_GIO_REG_VAL_L0S_ENABLED);
-               dev_info(trans->dev, "L1 Enabled; Disabling L0S\n");
-       } else {
-               /* L1-ASPM disabled; enable(!) L0S */
+       else
                iwl_clear_bit(trans, CSR_GIO_REG, CSR_GIO_REG_VAL_L0S_ENABLED);
-               dev_info(trans->dev, "L1 Disabled; Enabling L0S\n");
-       }
        trans->pm_support = !(lctl & PCI_EXP_LNKCTL_ASPM_L0S);
+
+       pcie_capability_read_word(trans_pcie->pci_dev, PCI_EXP_DEVCTL2, &cap);
+       trans->ltr_enabled = cap & PCI_EXP_DEVCTL2_LTR_EN;
+       dev_info(trans->dev, "L1 %sabled - LTR %sabled\n",
+                (lctl & PCI_EXP_LNKCTL_ASPM_L1) ? "En" : "Dis",
+                trans->ltr_enabled ? "En" : "Dis");
 }
 
 /*
@@ -428,7 +430,7 @@ static int iwl_pcie_apm_stop_master(struct iwl_trans *trans)
        ret = iwl_poll_bit(trans, CSR_RESET,
                           CSR_RESET_REG_FLAG_MASTER_DISABLED,
                           CSR_RESET_REG_FLAG_MASTER_DISABLED, 100);
-       if (ret)
+       if (ret < 0)
                IWL_WARN(trans, "Master Disable Timed Out, 100 usec\n");
 
        IWL_DEBUG_INFO(trans, "stop master\n");
@@ -544,7 +546,7 @@ static int iwl_pcie_prepare_card_hw(struct iwl_trans *trans)
                msleep(25);
        }
 
-       IWL_DEBUG_INFO(trans, "got NIC after %d iterations\n", iter);
+       IWL_ERR(trans, "Couldn't prepare the card\n");
 
        return ret;
 }
@@ -1043,7 +1045,7 @@ static int iwl_trans_pcie_d3_resume(struct iwl_trans *trans,
                           CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
                           CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
                           25000);
-       if (ret) {
+       if (ret < 0) {
                IWL_ERR(trans, "Failed to resume the device (mac ready)\n");
                return ret;
        }