wifi: iwlwifi: mvm: implement new firmware API for statistics

The new firmware API uses a new command and notification,
the command configures in which statistics types driver is
interested and the notification is sent periodically.
An additional change in the API is that most of the statistics
data is accumulated and reported by the firmware per MLO link.
Implement new command and notification handlers and adjust to
per-link statistics.

Signed-off-by: Anjaneyulu <pagadala.yesu.anjaneyulu@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20231022173519.8cc7df0ebff2.If1dcb57145841c5b3c68ed112bbfcd0201f7acc3@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 61 insertions, 0 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/utils.c b/drivers/net/wireless/intel/iwlwifi/mvm/utils.c
index 48016b4343d2..91286018a69d 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/utils.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/utils.c
@@ -342,6 +342,60 @@ static bool iwl_wait_stats_complete(struct iwl_notif_wait_data *notif_wait,
 	return true;
 }
 
+static int iwl_mvm_request_system_statistics(struct iwl_mvm *mvm, bool clear,
+					     u8 cmd_ver)
+{
+	struct iwl_system_statistics_cmd system_cmd = {
+		.cfg_mask = clear ?
+			    cpu_to_le32(IWL_STATS_CFG_FLG_ON_DEMAND_NTFY_MSK) :
+			    cpu_to_le32(IWL_STATS_CFG_FLG_RESET_MSK |
+					IWL_STATS_CFG_FLG_ON_DEMAND_NTFY_MSK),
+		.type_id_mask = cpu_to_le32(IWL_STATS_NTFY_TYPE_ID_OPER |
+					    IWL_STATS_NTFY_TYPE_ID_OPER_PART1),
+	};
+	struct iwl_host_cmd cmd = {
+		.id = WIDE_ID(SYSTEM_GROUP, SYSTEM_STATISTICS_CMD),
+		.len[0] = sizeof(system_cmd),
+		.data[0] = &system_cmd,
+	};
+	struct iwl_notification_wait stats_wait;
+	static const u16 stats_complete[] = {
+		WIDE_ID(SYSTEM_GROUP, SYSTEM_STATISTICS_END_NOTIF),
+	};
+	int ret;
+
+	if (cmd_ver != 1) {
+		IWL_FW_CHECK_FAILED(mvm,
+				    "Invalid system statistics command version:%d\n",
+				    cmd_ver);
+		return -EOPNOTSUPP;
+	}
+
+	iwl_init_notification_wait(&mvm->notif_wait, &stats_wait,
+				   stats_complete, ARRAY_SIZE(stats_complete),
+				   NULL, NULL);
+
+	mvm->statistics_clear = clear;
+	ret = iwl_mvm_send_cmd(mvm, &cmd);
+	if (ret) {
+		iwl_remove_notification(&mvm->notif_wait, &stats_wait);
+		return ret;
+	}
+
+	/* 500ms for OPERATIONAL, PART1 and END notification should be enough
+	 * for FW to collect data from all LMACs and send
+	 * STATISTICS_NOTIFICATION to host
+	 */
+	ret = iwl_wait_notification(&mvm->notif_wait, &stats_wait, HZ / 2);
+	if (ret)
+		return ret;
+
+	if (clear)
+		iwl_mvm_accu_radio_stats(mvm);
+
+	return ret;
+}
+
 int iwl_mvm_request_statistics(struct iwl_mvm *mvm, bool clear)
 {
 	struct iwl_statistics_cmd scmd = {
@@ -353,8 +407,15 @@ int iwl_mvm_request_statistics(struct iwl_mvm *mvm, bool clear)
 		.len[0] = sizeof(scmd),
 		.data[0] = &scmd,
 	};
+	u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
+					   WIDE_ID(SYSTEM_GROUP,
+						   SYSTEM_STATISTICS_CMD),
+					   IWL_FW_CMD_VER_UNKNOWN);
 	int ret;
 
+	if (cmd_ver != IWL_FW_CMD_VER_UNKNOWN)
+		return iwl_mvm_request_system_statistics(mvm, clear, cmd_ver);
+
 	/* From version 15 - STATISTICS_NOTIFICATION, the reply for
 	 * STATISTICS_CMD is empty, and the response is with
 	 * STATISTICS_NOTIFICATION notification