Merge tag 'iwlwifi-next-for-kalle-2014-12-30' of https://git.kernel.org/pub/scm/linux...
[cascardo/linux.git] / drivers / net / wireless / iwlwifi / mvm / mac80211.c
index d5d1cda..3756c03 100644 (file)
@@ -106,7 +106,7 @@ static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
 
 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
        {
-               .num_different_channels = 1,
+               .num_different_channels = 2,
                .max_interfaces = 3,
                .limits = iwl_mvm_limits,
                .n_limits = ARRAY_SIZE(iwl_mvm_limits),
@@ -462,15 +462,17 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
            device_can_wakeup(mvm->trans->dev)) {
                mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
                hw->wiphy->wowlan = &mvm->wowlan;
-       } else if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
+       }
+
+       if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
            mvm->trans->ops->d3_suspend &&
            mvm->trans->ops->d3_resume &&
            device_can_wakeup(mvm->trans->dev)) {
-               mvm->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
-                                   WIPHY_WOWLAN_DISCONNECT |
-                                   WIPHY_WOWLAN_EAP_IDENTITY_REQ |
-                                   WIPHY_WOWLAN_RFKILL_RELEASE |
-                                   WIPHY_WOWLAN_NET_DETECT;
+               mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
+                                    WIPHY_WOWLAN_DISCONNECT |
+                                    WIPHY_WOWLAN_EAP_IDENTITY_REQ |
+                                    WIPHY_WOWLAN_RFKILL_RELEASE |
+                                    WIPHY_WOWLAN_NET_DETECT;
                if (!iwlwifi_mod_params.sw_crypto)
                        mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
                                             WIPHY_WOWLAN_GTK_REKEY_FAILURE |
@@ -769,6 +771,7 @@ void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
        struct iwl_fw_error_dump_file *dump_file;
        struct iwl_fw_error_dump_data *dump_data;
        struct iwl_fw_error_dump_info *dump_info;
+       struct iwl_fw_error_dump_mem *dump_mem;
        struct iwl_mvm_dump_ptrs *fw_error_dump;
        u32 sram_len, sram_ofs;
        u32 file_len, rxf_len;
@@ -809,13 +812,13 @@ void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
 
        file_len = sizeof(*dump_file) +
                   sizeof(*dump_data) * 3 +
-                  sram_len +
+                  sram_len + sizeof(*dump_mem) +
                   rxf_len +
                   sizeof(*dump_info);
 
        /* Make room for the SMEM, if it exists */
        if (smem_len)
-               file_len += sizeof(*dump_data) + smem_len;
+               file_len += sizeof(*dump_data) + sizeof(*dump_mem) + smem_len;
 
        dump_file = vzalloc(file_len);
        if (!dump_file) {
@@ -862,17 +865,23 @@ void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
        }
 
        dump_data = iwl_fw_error_next_data(dump_data);
-       dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_SRAM);
-       dump_data->len = cpu_to_le32(sram_len);
-       iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_data->data,
+       dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
+       dump_data->len = cpu_to_le32(sram_len + sizeof(*dump_mem));
+       dump_mem = (void *)dump_data->data;
+       dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
+       dump_mem->offset = cpu_to_le32(sram_ofs);
+       iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_mem->data,
                                 sram_len);
 
        if (smem_len) {
                dump_data = iwl_fw_error_next_data(dump_data);
-               dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_SMEM);
-               dump_data->len = cpu_to_le32(smem_len);
+               dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
+               dump_data->len = cpu_to_le32(smem_len + sizeof(*dump_mem));
+               dump_mem = (void *)dump_data->data;
+               dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SMEM);
+               dump_mem->offset = cpu_to_le32(mvm->cfg->smem_offset);
                iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->smem_offset,
-                                        dump_data->data, smem_len);
+                                        dump_mem->data, smem_len);
        }
 
        fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans);
@@ -894,6 +903,11 @@ static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
        if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status))
                iwl_mvm_fw_error_dump(mvm);
 
+       /* cleanup all stale references (scan, roc), but keep the
+        * ucode_down ref until reconfig is complete
+        */
+       iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
+
        iwl_trans_stop_device(mvm->trans);
 
        mvm->scan_status = IWL_MVM_SCAN_NONE;
@@ -923,10 +937,6 @@ static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
 
        ieee80211_wake_queues(mvm->hw);
 
-       /* cleanup all stale references (scan, roc), but keep the
-        * ucode_down ref until reconfig is complete */
-       iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
-
        /* clear any stale d0i3 state */
        clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
 
@@ -963,6 +973,19 @@ static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
        struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
        int ret;
 
+       /* Some hw restart cleanups must not hold the mutex */
+       if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
+               /*
+                * Make sure we are out of d0i3. This is needed
+                * to make sure the reference accounting is correct
+                * (and there is no stale d0i3_exit_work).
+                */
+               wait_event_timeout(mvm->d0i3_exit_waitq,
+                                  !test_bit(IWL_MVM_STATUS_IN_D0I3,
+                                            &mvm->status),
+                                  HZ);
+       }
+
        mutex_lock(&mvm->mutex);
        ret = __iwl_mvm_mac_start(mvm);
        mutex_unlock(&mvm->mutex);
@@ -1012,6 +1035,13 @@ static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
                IWL_DEBUG_RPM(mvm, "Run deferred d0i3 exit\n");
                _iwl_mvm_exit_d0i3(mvm);
        }
+
+       if (mvm->trans->d0i3_mode == IWL_D0I3_MODE_ON_SUSPEND)
+               if (!wait_event_timeout(mvm->d0i3_exit_waitq,
+                                       !test_bit(IWL_MVM_STATUS_IN_D0I3,
+                                                 &mvm->status),
+                                       HZ))
+                       WARN_ONCE(1, "D0i3 exit on resume timed out\n");
 }
 
 static void
@@ -1034,8 +1064,13 @@ void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
 {
        lockdep_assert_held(&mvm->mutex);
 
-       /* disallow low power states when the FW is down */
-       iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
+       /*
+        * Disallow low power states when the FW is down by taking
+        * the UCODE_DOWN ref. in case of ongoing hw restart the
+        * ref is already taken, so don't take it again.
+        */
+       if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
+               iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
 
        /* async_handlers_wk is now blocked */
 
@@ -1053,6 +1088,12 @@ void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
        /* the fw is stopped, the aux sta is dead: clean up driver state */
        iwl_mvm_del_aux_sta(mvm);
 
+       /*
+        * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
+        * won't be called in this case).
+        */
+       clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
+
        mvm->ucode_loaded = false;
 }
 
@@ -2107,7 +2148,7 @@ static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
                                       struct ieee80211_sta *sta)
 {
        struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
-       struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
+       struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
 
        /*
         * This is called before mac80211 does RCU synchronisation,
@@ -3122,7 +3163,7 @@ static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
                           bool set)
 {
        struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
-       struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
+       struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
 
        if (!mvm_sta || !mvm_sta->vif) {
                IWL_ERR(mvm, "Station is not associated to a vif\n");