iwlwifi: mvm: add thermal throttling and CT kill

In order to avoid NIC destruction due to high temperature,
CT kill will power down the NIC.

To avoid this, thermal throttling will decrease throughput
to prevent the NIC from reaching the temperature at which
CT kill is performed.

Signed-off-by: Eytan Lifshitz <eytan.lifshitz@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 31 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/mvm/utils.c b/drivers/net/wireless/iwlwifi/mvm/utils.c
index 687b34e387ac..c9b44ab4af07 100644
--- a/drivers/net/wireless/iwlwifi/mvm/utils.c
+++ b/drivers/net/wireless/iwlwifi/mvm/utils.c
@@ -471,3 +471,34 @@ int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq,
 
 	return iwl_mvm_send_cmd(mvm, &cmd);
 }
+
+/**
+ * iwl_mvm_update_smps - Get a requst to change the SMPS mode
+ * @req_type: The part of the driver who call for a change.
+ * @smps_requests: The request to change the SMPS mode.
+ *
+ * Get a requst to change the SMPS mode,
+ * and change it according to all other requests in the driver.
+ */
+void iwl_mvm_update_smps(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
+			 enum iwl_mvm_smps_type_request req_type,
+			 enum ieee80211_smps_mode smps_request)
+{
+	struct iwl_mvm_vif *mvmvif;
+	enum ieee80211_smps_mode smps_mode = IEEE80211_SMPS_AUTOMATIC;
+	int i;
+
+	lockdep_assert_held(&mvm->mutex);
+	mvmvif = iwl_mvm_vif_from_mac80211(vif);
+	mvmvif->smps_requests[req_type] = smps_request;
+	for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) {
+		if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC) {
+			smps_mode = IEEE80211_SMPS_STATIC;
+			break;
+		}
+		if (mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC)
+			smps_mode = IEEE80211_SMPS_DYNAMIC;
+	}
+
+	ieee80211_request_smps(vif, smps_mode);
+}