diff --git a/drivers/scsi/hisi_sas/hisi_sas.h b/drivers/scsi/hisi_sas/hisi_sas.h
index 445e6d4a802761d8727dc8dd826e2201df81b6b2..4818b7bc220aa1ab949f4d92418012639b7adb73 100644
--- a/drivers/scsi/hisi_sas/hisi_sas.h
+++ b/drivers/scsi/hisi_sas/hisi_sas.h
@@ -223,6 +223,10 @@ struct hisi_sas_slot {
 	int	idx;
 };
 
+struct hisi_sas_debugfs_reg {
+	int count;
+};
+
 struct hisi_sas_hw {
 	int (*hw_init)(struct hisi_hba *hisi_hba);
 	void (*setup_itct)(struct hisi_hba *hisi_hba,
@@ -267,6 +271,9 @@ struct hisi_sas_hw {
 	int max_command_entries;
 	int complete_hdr_size;
 	struct scsi_host_template *sht;
+
+	const struct hisi_sas_debugfs_reg *debugfs_reg_global;
+	const struct hisi_sas_debugfs_reg *debugfs_reg_port;
 };
 
 struct hisi_hba {
@@ -335,6 +342,14 @@ struct hisi_hba {
 	u32 intr_coal_count;	/* count of interrupt coalesce */
 	int enable_dix_dif;
 
+	/* debugfs memories */
+	void *global_reg_debugfs;
+	void *port_reg_debugfs[HISI_SAS_MAX_PHYS];
+	void *complete_hdr_debugfs[HISI_SAS_MAX_QUEUES];
+	struct hisi_sas_cmd_hdr	*cmd_hdr_debugfs[HISI_SAS_MAX_QUEUES];
+	struct hisi_sas_iost *iost_debugfs;
+	struct hisi_sas_itct *itct_debugfs;
+
 	struct dentry *debugfs_dir;
 };
 
diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
index ab0c56d71e7758127f1f6c077b96f19f2d33c1e5..ba0530f8cc98e9f1248eec833472a6eb1602e69e 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -2576,10 +2576,85 @@ struct dentry *hisi_sas_dbg_dir;
 
 void hisi_sas_debugfs_init(struct hisi_hba *hisi_hba)
 {
+	int max_command_entries = hisi_hba->hw->max_command_entries;
 	struct device *dev = hisi_hba->dev;
+	int p, i, c, d;
+	size_t sz;
 
 	hisi_hba->debugfs_dir = debugfs_create_dir(dev_name(dev),
 						hisi_sas_dbg_dir);
+	if (!hisi_hba->debugfs_dir)
+		return;
+
+	/* Alloc buffer for global */
+	sz = hisi_hba->hw->debugfs_reg_global->count * 4;
+	hisi_hba->global_reg_debugfs =
+		devm_kmalloc(dev, sz, GFP_KERNEL);
+
+	if (!hisi_hba->global_reg_debugfs)
+		goto fail_global;
+
+	/* Alloc buffer for port */
+	sz = hisi_hba->hw->debugfs_reg_port->count * 4;
+	for (p = 0; p < hisi_hba->n_phy; p++) {
+		hisi_hba->port_reg_debugfs[p] =
+			devm_kmalloc(dev, sz, GFP_KERNEL);
+
+		if (!hisi_hba->port_reg_debugfs[p])
+			goto fail_port;
+	}
+
+	/* Alloc buffer for cq */
+	sz = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS;
+	for (c = 0; c < hisi_hba->queue_count; c++) {
+		hisi_hba->complete_hdr_debugfs[c] =
+			devm_kmalloc(dev, sz, GFP_KERNEL);
+
+		if (!hisi_hba->complete_hdr_debugfs[c])
+			goto fail_cq;
+	}
+
+	/* Alloc buffer for dq */
+	sz = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS;
+	for (d = 0; d < hisi_hba->queue_count; d++) {
+		hisi_hba->cmd_hdr_debugfs[d] =
+			devm_kmalloc(dev, sz, GFP_KERNEL);
+
+		if (!hisi_hba->cmd_hdr_debugfs[d])
+			goto fail_iost_dq;
+	}
+
+	/* Alloc buffer for iost */
+	sz = max_command_entries * sizeof(struct hisi_sas_iost);
+
+	hisi_hba->iost_debugfs = devm_kmalloc(dev, sz, GFP_KERNEL);
+	if (!hisi_hba->iost_debugfs)
+		goto fail_iost_dq;
+
+	/* Alloc buffer for itct */
+	/* New memory allocation must be locate before itct */
+	sz = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct);
+
+	hisi_hba->itct_debugfs = devm_kmalloc(dev, sz, GFP_KERNEL);
+	if (!hisi_hba->itct_debugfs)
+		goto fail_itct;
+
+	return;
+fail_itct:
+	devm_kfree(dev, hisi_hba->iost_debugfs);
+fail_iost_dq:
+	for (i = 0; i < d; i++)
+		devm_kfree(dev, hisi_hba->cmd_hdr_debugfs[i]);
+fail_cq:
+	for (i = 0; i < c; i++)
+		devm_kfree(dev, hisi_hba->complete_hdr_debugfs[i]);
+fail_port:
+	for (i = 0; i < p; i++)
+		devm_kfree(dev, hisi_hba->port_reg_debugfs[i]);
+	devm_kfree(dev, hisi_hba->global_reg_debugfs);
+fail_global:
+	debugfs_remove_recursive(hisi_hba->debugfs_dir);
+	dev_err(dev, "Dev: %s fail to init Debugfs!", dev_name(dev));
 }
 EXPORT_SYMBOL_GPL(hisi_sas_debugfs_init);
 
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
index 699f62581bde75f04f093d2dcac09f0c69c9f669..986f69d5ad8fc6b12f3dccffe401fccf2ebeb522 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
@@ -2400,6 +2400,12 @@ static ssize_t intr_coal_count_store(struct device *dev,
 }
 static DEVICE_ATTR_RW(intr_coal_count);
 
+static const struct hisi_sas_debugfs_reg debugfs_port_reg = {
+};
+
+static const struct hisi_sas_debugfs_reg debugfs_global_reg = {
+};
+
 struct device_attribute *host_attrs_v3_hw[] = {
 	&dev_attr_phy_event_threshold,
 	&dev_attr_intr_conv,
@@ -2459,6 +2465,8 @@ static const struct hisi_sas_hw hisi_sas_v3_hw = {
 	.get_events = phy_get_events_v3_hw,
 	.write_gpio = write_gpio_v3_hw,
 	.wait_cmds_complete_timeout = wait_cmds_complete_timeout_v3_hw,
+	.debugfs_reg_global = &debugfs_global_reg,
+	.debugfs_reg_port = &debugfs_port_reg,
 };
 
 static struct Scsi_Host *