wifi: ath12k: add processing for TWT enable event

When ath12k send TWT enable command to firmware, firmware will return a TWT
enable event to ath12k. Through the analysis of TWT enable event status, we
can easily obtain the status of TWT enable command. It can be more
convenient to debug TWT.

This patch works with WCN7850 and QCN9274.

Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0-03427-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.15378.4
Signed-off-by: Lingbo Kong <quic_lingbok@quicinc.com>
Acked-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://msgid.link/20240122085336.3985-2-quic_lingbok@quicinc.com

drivers/net/wireless/ath/ath12k/wmi.c

@@ -162,6 +162,8 @@ static const struct ath12k_wmi_tlv_policy ath12k_wmi_tlv_policies[] = {
 		.min_len = sizeof(struct wmi_probe_resp_tx_status_event) },
 	[WMI_TAG_VDEV_DELETE_RESP_EVENT] = {
 		.min_len = sizeof(struct wmi_vdev_delete_resp_event) },
+	[WMI_TAG_TWT_ENABLE_COMPLETE_EVENT] = {
+		.min_len = sizeof(struct wmi_twt_enable_event) },
 };
 
 static __le32 ath12k_wmi_tlv_hdr(u32 cmd, u32 len)
@@ -6669,6 +6671,35 @@ ath12k_wmi_diag_event(struct ath12k_base *ab, struct sk_buff *skb)
 	trace_ath12k_wmi_diag(ab, skb->data, skb->len);
 }
 
+static void ath12k_wmi_twt_enable_event(struct ath12k_base *ab,
+					struct sk_buff *skb)
+{
+	const void **tb;
+	const struct wmi_twt_enable_event *ev;
+	int ret;
+
+	tb = ath12k_wmi_tlv_parse_alloc(ab, skb, GFP_ATOMIC);
+	if (IS_ERR(tb)) {
+		ret = PTR_ERR(tb);
+		ath12k_warn(ab, "failed to parse wmi twt enable status event tlv: %d\n",
+			    ret);
+		return;
+	}
+
+	ev = tb[WMI_TAG_TWT_ENABLE_COMPLETE_EVENT];
+	if (!ev) {
+		ath12k_warn(ab, "failed to fetch twt enable wmi event\n");
+		goto exit;
+	}
+
+	ath12k_dbg(ab, ATH12K_DBG_MAC, "wmi twt enable event pdev id %u status %u\n",
+		   le32_to_cpu(ev->pdev_id),
+		   le32_to_cpu(ev->status));
+
+exit:
+	kfree(tb);
+}
+
 static void ath12k_wmi_op_rx(struct ath12k_base *ab, struct sk_buff *skb)
 {
 	struct wmi_cmd_hdr *cmd_hdr;
@@ -6764,10 +6795,12 @@ static void ath12k_wmi_op_rx(struct ath12k_base *ab, struct sk_buff *skb)
 	case WMI_RFKILL_STATE_CHANGE_EVENTID:
 		ath12k_rfkill_state_change_event(ab, skb);
 		break;
+	case WMI_TWT_ENABLE_EVENTID:
+		ath12k_wmi_twt_enable_event(ab, skb);
+		break;
 	/* add Unsupported events here */
 	case WMI_TBTTOFFSET_EXT_UPDATE_EVENTID:
 	case WMI_PEER_OPER_MODE_CHANGE_EVENTID:
-	case WMI_TWT_ENABLE_EVENTID:
 	case WMI_TWT_DISABLE_EVENTID:
 	case WMI_PDEV_DMA_RING_CFG_RSP_EVENTID:
 		ath12k_dbg(ab, ATH12K_DBG_WMI,

drivers/net/wireless/ath/ath12k/wmi.h

@@ -4809,6 +4809,11 @@ struct wmi_rfkill_state_change_event {
 	__le32 radio_state;
 } __packed;
 
+struct wmi_twt_enable_event {
+	__le32 pdev_id;
+	__le32 status;
+} __packed;
+
 void ath12k_wmi_init_qcn9274(struct ath12k_base *ab,
 			     struct ath12k_wmi_resource_config_arg *config);
 void ath12k_wmi_init_wcn7850(struct ath12k_base *ab,