iwlwifi: mvm: treat netdetect wake up separately
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / mvm / d3.c
index 3bbb511b0b3883ddc2f5c08808d0cabc5d15515b..176556ea63cb499aa09cf44d44c89f150d47c283 100644 (file)
@@ -878,6 +878,10 @@ iwl_mvm_wowlan_config(struct iwl_mvm *mvm,
        };
        int ret;
 
+       ret = iwl_mvm_switch_to_d3(mvm);
+       if (ret)
+               return ret;
+
        ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta);
        if (ret)
                return ret;
@@ -962,6 +966,33 @@ out:
        return ret;
 }
 
+static int
+iwl_mvm_netdetect_config(struct iwl_mvm *mvm,
+                        struct cfg80211_wowlan *wowlan,
+                        struct cfg80211_sched_scan_request *nd_config,
+                        struct ieee80211_vif *vif)
+{
+       struct iwl_wowlan_config_cmd_v3 wowlan_config_cmd = {};
+       int ret;
+
+       ret = iwl_mvm_switch_to_d3(mvm);
+       if (ret)
+               return ret;
+
+       /* rfkill release can be either for wowlan or netdetect */
+       if (wowlan->rfkill_release)
+               wowlan_config_cmd.common.wakeup_filter |=
+                       cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
+
+       ret = iwl_mvm_send_wowlan_config_cmd(mvm, &wowlan_config_cmd);
+       if (ret)
+               return ret;
+
+       ret = iwl_mvm_scan_offload_start(mvm, vif, nd_config, &mvm->nd_ies);
+
+       return ret;
+}
+
 static int __iwl_mvm_suspend(struct ieee80211_hw *hw,
                             struct cfg80211_wowlan *wowlan,
                             bool test)
@@ -970,7 +1001,6 @@ static int __iwl_mvm_suspend(struct ieee80211_hw *hw,
        struct ieee80211_vif *vif = NULL;
        struct iwl_mvm_vif *mvmvif = NULL;
        struct ieee80211_sta *ap_sta = NULL;
-       struct iwl_wowlan_config_cmd_v3 wowlan_config_cmd = {};
        struct iwl_d3_manager_config d3_cfg_cmd_data = {
                /*
                 * Program the minimum sleep time to 10 seconds, as many
@@ -1007,8 +1037,22 @@ static int __iwl_mvm_suspend(struct ieee80211_hw *hw,
 
        mvmvif = iwl_mvm_vif_from_mac80211(vif);
 
-       /* if we're associated, this is wowlan */
-       if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
+       if (mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT) {
+               /* if we're not associated, this must be netdetect */
+               if (!wowlan->nd_config && !mvm->nd_config) {
+                       ret = 1;
+                       goto out_noreset;
+               }
+
+               ret = iwl_mvm_netdetect_config(
+                       mvm, wowlan, wowlan->nd_config ?: mvm->nd_config, vif);
+               if (ret)
+                       goto out;
+
+               mvm->net_detect = true;
+       } else {
+               struct iwl_wowlan_config_cmd_v3 wowlan_config_cmd = {};
+
                ap_sta = rcu_dereference_protected(
                        mvm->fw_id_to_mac_id[mvmvif->ap_sta_id],
                        lockdep_is_held(&mvm->mutex));
@@ -1021,27 +1065,12 @@ static int __iwl_mvm_suspend(struct ieee80211_hw *hw,
                                                vif, mvmvif, ap_sta);
                if (ret)
                        goto out_noreset;
-
-               ret = iwl_mvm_switch_to_d3(mvm);
-               if (ret)
-                       goto out;
-
                ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
                                            vif, mvmvif, ap_sta);
                if (ret)
                        goto out;
-       } else if (mvm->nd_config) {
-               ret = iwl_mvm_switch_to_d3(mvm);
-               if (ret)
-                       goto out;
 
-               ret = iwl_mvm_scan_offload_start(mvm, vif, mvm->nd_config,
-                                                mvm->nd_ies);
-               if (ret)
-                       goto out;
-       } else {
-               ret = 1;
-               goto out_noreset;
+               mvm->net_detect = false;
        }
 
        ret = iwl_mvm_power_update_device(mvm);
@@ -1465,9 +1494,8 @@ out:
        return true;
 }
 
-/* releases the MVM mutex */
-static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
-                                        struct ieee80211_vif *vif)
+static struct iwl_wowlan_status *
+iwl_mvm_get_wakeup_status(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 {
        u32 base = mvm->error_event_table;
        struct error_table_start {
@@ -1479,19 +1507,15 @@ static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
                .id = WOWLAN_GET_STATUSES,
                .flags = CMD_WANT_SKB,
        };
-       struct iwl_wowlan_status_data status;
-       struct iwl_wowlan_status *fw_status;
-       int ret, len, status_size, i;
-       bool keep;
-       struct ieee80211_sta *ap_sta;
-       struct iwl_mvm_sta *mvm_ap_sta;
+       struct iwl_wowlan_status *status, *fw_status;
+       int ret, len, status_size;
 
        iwl_trans_read_mem_bytes(mvm->trans, base,
                                 &err_info, sizeof(err_info));
 
        if (err_info.valid) {
-               IWL_INFO(mvm, "error table is valid (%d)\n",
-                        err_info.valid);
+               IWL_INFO(mvm, "error table is valid (%d) with error (%d)\n",
+                        err_info.valid, err_info.error_id);
                if (err_info.error_id == RF_KILL_INDICATOR_FOR_WOWLAN) {
                        struct cfg80211_wowlan_wakeup wakeup = {
                                .rfkill_release = true,
@@ -1499,7 +1523,7 @@ static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
                        ieee80211_report_wowlan_wakeup(vif, &wakeup,
                                                       GFP_KERNEL);
                }
-               goto out_unlock;
+               return ERR_PTR(-EIO);
        }
 
        /* only for tracing for now */
@@ -1510,22 +1534,53 @@ static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
        ret = iwl_mvm_send_cmd(mvm, &cmd);
        if (ret) {
                IWL_ERR(mvm, "failed to query status (%d)\n", ret);
-               goto out_unlock;
+               return ERR_PTR(ret);
        }
 
        /* RF-kill already asserted again... */
-       if (!cmd.resp_pkt)
-               goto out_unlock;
+       if (!cmd.resp_pkt) {
+               ret = -ERFKILL;
+               goto out_free_resp;
+       }
 
        status_size = sizeof(*fw_status);
 
        len = iwl_rx_packet_payload_len(cmd.resp_pkt);
        if (len < status_size) {
                IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
+               ret = -EIO;
                goto out_free_resp;
        }
 
-       fw_status = (void *)cmd.resp_pkt->data;
+       status = (void *)cmd.resp_pkt->data;
+       if (len != (status_size +
+                   ALIGN(le32_to_cpu(status->wake_packet_bufsize), 4))) {
+               IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
+               ret = -EIO;
+               goto out_free_resp;
+       }
+
+       fw_status = kmemdup(status, len, GFP_KERNEL);
+
+out_free_resp:
+       iwl_free_resp(&cmd);
+       return ret ? ERR_PTR(ret) : fw_status;
+}
+
+/* releases the MVM mutex */
+static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
+                                        struct ieee80211_vif *vif)
+{
+       struct iwl_wowlan_status_data status;
+       struct iwl_wowlan_status *fw_status;
+       int i;
+       bool keep;
+       struct ieee80211_sta *ap_sta;
+       struct iwl_mvm_sta *mvm_ap_sta;
+
+       fw_status = iwl_mvm_get_wakeup_status(mvm, vif);
+       if (IS_ERR_OR_NULL(fw_status))
+               goto out_unlock;
 
        status.pattern_number = le16_to_cpu(fw_status->pattern_number);
        for (i = 0; i < 8; i++)
@@ -1538,17 +1593,12 @@ static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
                le32_to_cpu(fw_status->wake_packet_bufsize);
        status.wake_packet = fw_status->wake_packet;
 
-       if (len != status_size + ALIGN(status.wake_packet_bufsize, 4)) {
-               IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
-               goto out_free_resp;
-       }
-
        /* still at hard-coded place 0 for D3 image */
        ap_sta = rcu_dereference_protected(
                        mvm->fw_id_to_mac_id[0],
                        lockdep_is_held(&mvm->mutex));
        if (IS_ERR_OR_NULL(ap_sta))
-               goto out_free_resp;
+               goto out_free;
 
        mvm_ap_sta = (struct iwl_mvm_sta *)ap_sta->drv_priv;
        for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
@@ -1565,16 +1615,42 @@ static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
 
        keep = iwl_mvm_setup_connection_keep(mvm, vif, fw_status);
 
-       iwl_free_resp(&cmd);
+       kfree(fw_status);
        return keep;
 
- out_free_resp:
-       iwl_free_resp(&cmd);
- out_unlock:
+out_free:
+       kfree(fw_status);
+out_unlock:
        mutex_unlock(&mvm->mutex);
        return false;
 }
 
+static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm,
+                                           struct ieee80211_vif *vif)
+{
+       struct cfg80211_wowlan_wakeup wakeup = {
+               .pattern_idx = -1,
+       };
+       struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
+       struct iwl_wowlan_status *fw_status;
+       u32 reasons = 0;
+
+       fw_status = iwl_mvm_get_wakeup_status(mvm, vif);
+       if (!IS_ERR_OR_NULL(fw_status))
+               reasons = le32_to_cpu(fw_status->wakeup_reasons);
+
+       if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
+               wakeup.rfkill_release = true;
+
+       if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
+               /* TODO: read and check if it was netdetect */
+               wakeup_report = NULL;
+       }
+
+       mutex_unlock(&mvm->mutex);
+       ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
+}
+
 static void iwl_mvm_read_d3_sram(struct iwl_mvm *mvm)
 {
 #ifdef CONFIG_IWLWIFI_DEBUGFS
@@ -1632,11 +1708,15 @@ static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test)
        /* query SRAM first in case we want event logging */
        iwl_mvm_read_d3_sram(mvm);
 
-       keep = iwl_mvm_query_wakeup_reasons(mvm, vif);
+       if (mvm->net_detect) {
+               iwl_mvm_query_netdetect_reasons(mvm, vif);
+       } else {
+               keep = iwl_mvm_query_wakeup_reasons(mvm, vif);
 #ifdef CONFIG_IWLWIFI_DEBUGFS
-       if (keep)
-               mvm->keep_vif = vif;
+               if (keep)
+                       mvm->keep_vif = vif;
 #endif
+       }
        /* has unlocked the mutex, so skip that */
        goto out;
 
@@ -1651,6 +1731,7 @@ static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test)
 
        /* return 1 to reconfigure the device */
        set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
+       set_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status);
        return 1;
 }
 
@@ -1658,18 +1739,8 @@ int iwl_mvm_resume(struct ieee80211_hw *hw)
 {
        struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 
-       if (iwl_mvm_is_d0i3_supported(mvm)) {
-               bool exit_now;
-
-               mutex_lock(&mvm->d0i3_suspend_mutex);
-               __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
-               exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP,
-                                               &mvm->d0i3_suspend_flags);
-               mutex_unlock(&mvm->d0i3_suspend_mutex);
-               if (exit_now)
-                       _iwl_mvm_exit_d0i3(mvm);
+       if (iwl_mvm_is_d0i3_supported(mvm))
                return 0;
-       }
 
        return __iwl_mvm_resume(mvm, false);
 }
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