5 files changed, 37 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath11k/debugfs.c b/drivers/net/wireless/ath/ath11k/debugfs.c
index da30cdd10c34..7fad6e447229 100644
--- a/drivers/net/wireless/ath/ath11k/debugfs.c
+++ b/drivers/net/wireless/ath/ath11k/debugfs.c
@@ -604,6 +604,10 @@ static ssize_t ath11k_write_simulate_fw_crash(struct file *file,
 		ath11k_info(ab, "user requested hw restart\n");
 		queue_work(ab->workqueue_aux, &ab->reset_work);
 		ret = 0;
+	} else if (!strcmp(buf, "mhi-rddm")) {
+		ath11k_info(ab, "force target rddm\n");
+		ath11k_hif_force_rddm(ab);
+		ret = 0;
 	} else {
 		ret = -EINVAL;
 		goto exit;
diff --git a/drivers/net/wireless/ath/ath11k/hif.h b/drivers/net/wireless/ath/ath11k/hif.h
index 659b80d2abd4..7eca43a91a42 100644
--- a/drivers/net/wireless/ath/ath11k/hif.h
+++ b/drivers/net/wireless/ath/ath11k/hif.h
@@ -30,6 +30,7 @@ struct ath11k_hif_ops {
 	void (*ce_irq_enable)(struct ath11k_base *ab);
 	void (*ce_irq_disable)(struct ath11k_base *ab);
 	void (*get_ce_msi_idx)(struct ath11k_base *ab, u32 ce_id, u32 *msi_idx);
+	int (*target_crash)(struct ath11k_base *ab);
 };
 
 static inline void ath11k_hif_ce_irq_enable(struct ath11k_base *ab)
@@ -90,6 +91,13 @@ static inline int ath11k_hif_resume(struct ath11k_base *ab)
 	return 0;
 }
 
+static inline int ath11k_hif_force_rddm(struct ath11k_base *ab)
+{
+	if (ab->hif.ops->target_crash)
+		return ab->hif.ops->target_crash(ab);
+	return 0;
+}
+
 static inline u32 ath11k_hif_read32(struct ath11k_base *sc, u32 address)
 {
 	return sc->hif.ops->read32(sc, address);
diff --git a/drivers/net/wireless/ath/ath11k/mhi.c b/drivers/net/wireless/ath/ath11k/mhi.c
index 6247b48db627..e3ade8e5ce43 100644
--- a/drivers/net/wireless/ath/ath11k/mhi.c
+++ b/drivers/net/wireless/ath/ath11k/mhi.c
@@ -527,3 +527,18 @@ int ath11k_mhi_resume(struct ath11k_pci *ab_pci)
 
 	return 0;
 }
+
+
+int ath11k_mhi_force_rddm(struct ath11k_pci *ab_pci)
+{
+	struct ath11k_base *ab = ab_pci->ab;
+	int ret;
+
+	ret = mhi_force_rddm_mode(ab_pci->mhi_ctrl);
+	if (ret) {
+		ath11k_warn(ab, "failed to resume mhi: %d", ret);
+		return ret;
+	}
+
+	return 0;
+}
diff --git a/drivers/net/wireless/ath/ath11k/mhi.h b/drivers/net/wireless/ath/ath11k/mhi.h
index 8d9f852da695..215428b87fc4 100644
--- a/drivers/net/wireless/ath/ath11k/mhi.h
+++ b/drivers/net/wireless/ath/ath11k/mhi.h
@@ -25,5 +25,6 @@ void ath11k_mhi_clear_vector(struct ath11k_base *ab);
 
 int ath11k_mhi_suspend(struct ath11k_pci *ar_pci);
 int ath11k_mhi_resume(struct ath11k_pci *ar_pci);
+int ath11k_mhi_force_rddm(struct ath11k_pci *ab_pci);
 
 #endif
diff --git a/drivers/net/wireless/ath/ath11k/pci.c b/drivers/net/wireless/ath/ath11k/pci.c
index fcb8457a87f4..c8cf05250fd8 100644
--- a/drivers/net/wireless/ath/ath11k/pci.c
+++ b/drivers/net/wireless/ath/ath11k/pci.c
@@ -800,6 +800,14 @@ static int ath11k_pci_start(struct ath11k_base *ab)
 	return 0;
 }
 
+static int ath11k_pci_force_rddm(struct ath11k_base *ab)
+{
+	struct ath11k_pci *ar_pci;
+
+	ar_pci = ath11k_pci_priv(ab);
+	return ath11k_mhi_force_rddm(ar_pci);
+}
+
 static const struct ath11k_hif_ops ath11k_pci_hif_ops = {
 	.start = ath11k_pci_start,
 	.stop = ath11k_pcic_stop,
@@ -818,6 +826,7 @@ static const struct ath11k_hif_ops ath11k_pci_hif_ops = {
 	.ce_irq_enable = ath11k_pci_hif_ce_irq_enable,
 	.ce_irq_disable = ath11k_pci_hif_ce_irq_disable,
 	.get_ce_msi_idx = ath11k_pcic_get_ce_msi_idx,
+	.target_crash = ath11k_pci_force_rddm,
 };
 
 static void ath11k_pci_read_hw_version(struct ath11k_base *ab, u32 *major, u32 *minor)