wifi: ath12k: introduce QMI firmware ready flag

When hardware device group abstraction is introduced, the QMI firmware ready
event of different devices in a group can be received simultaneously. To
indicate the firmware ready event is completed for a particular device in a
group set a flag (ATH12K_FLAG_QMI_FW_READY_COMPLETE). This helps the upcoming
hardware recovery implementation for hardware device group abstraction.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-QCAHKSWPL_SILICONZ-1
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3

Signed-off-by: Karthikeyan Periyasamy <quic_periyasa@quicinc.com>
Signed-off-by: Harshitha Prem <quic_hprem@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://patch.msgid.link/20241128165026.2618331-5-kvalo@kernel.org

Author: Karthikeyan Periyasamy

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

@@ -1145,7 +1145,7 @@ static void ath12k_core_reset(struct work_struct *work)
 	int reset_count, fail_cont_count;
 	long time_left;
 
-	if (!(test_bit(ATH12K_FLAG_REGISTERED, &ab->dev_flags))) {
+	if (!(test_bit(ATH12K_FLAG_QMI_FW_READY_COMPLETE, &ab->dev_flags))) {
 		ath12k_warn(ab, "ignore reset dev flags 0x%lx\n", ab->dev_flags);
 		return;
 	}

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

@@ -228,6 +228,7 @@ enum ath12k_dev_flags {
 	ATH12K_FLAG_HTC_SUSPEND_COMPLETE,
 	ATH12K_FLAG_CE_IRQ_ENABLED,
 	ATH12K_FLAG_EXT_IRQ_ENABLED,
+	ATH12K_FLAG_QMI_FW_READY_COMPLETE,
 };
 
 struct ath12k_tx_conf {

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

@@ -3033,6 +3033,8 @@ void ath12k_qmi_firmware_stop(struct ath12k_base *ab)
 {
 	int ret;
 
+	clear_bit(ATH12K_FLAG_QMI_FW_READY_COMPLETE, &ab->dev_flags);
+
 	ret = ath12k_qmi_wlanfw_mode_send(ab, ATH12K_FIRMWARE_MODE_OFF);
 	if (ret < 0) {
 		ath12k_warn(ab, "qmi failed to send wlan mode off\n");
@@ -3336,7 +3338,7 @@ static void ath12k_qmi_driver_event_work(struct work_struct *work)
 			break;
 		case ATH12K_QMI_EVENT_FW_READY:
 			clear_bit(ATH12K_FLAG_QMI_FAIL, &ab->dev_flags);
-			if (test_bit(ATH12K_FLAG_REGISTERED, &ab->dev_flags)) {
+			if (test_bit(ATH12K_FLAG_QMI_FW_READY_COMPLETE, &ab->dev_flags)) {
 				if (ab->is_reset)
 					ath12k_hal_dump_srng_stats(ab);
 				queue_work(ab->workqueue, &ab->restart_work);
@@ -3346,8 +3348,12 @@ static void ath12k_qmi_driver_event_work(struct work_struct *work)
 			clear_bit(ATH12K_FLAG_CRASH_FLUSH,
 				  &ab->dev_flags);
 			clear_bit(ATH12K_FLAG_RECOVERY, &ab->dev_flags);
-			ath12k_core_qmi_firmware_ready(ab);
-			set_bit(ATH12K_FLAG_REGISTERED, &ab->dev_flags);
+			ret = ath12k_core_qmi_firmware_ready(ab);
+			if (!ret) {
+				set_bit(ATH12K_FLAG_QMI_FW_READY_COMPLETE,
+					&ab->dev_flags);
+				set_bit(ATH12K_FLAG_REGISTERED, &ab->dev_flags);
+			}
 
 			break;
 		default: