diff --git a/drivers/net/ethernet/sfc/ef100_nic.c b/drivers/net/ethernet/sfc/ef100_nic.c
index cd9f724a9e64..1bffc1994ed8 100644
--- a/drivers/net/ethernet/sfc/ef100_nic.c
+++ b/drivers/net/ethernet/sfc/ef100_nic.c
@@ -33,7 +33,6 @@
 
 #define EF100_MAX_VIS 4096
 #define EF100_NUM_MCDI_BUFFERS	1
-#define MCDI_BUF_LEN (8 + MCDI_CTL_SDU_LEN_MAX)
 
 #define EF100_RESET_PORT ((ETH_RESET_MAC | ETH_RESET_PHY) << ETH_RESET_SHARED_SHIFT)
 
diff --git a/drivers/net/ethernet/sfc/ef100_vdpa.c b/drivers/net/ethernet/sfc/ef100_vdpa.c
index 5c9f29f881a6..30ca4ab00175 100644
--- a/drivers/net/ethernet/sfc/ef100_vdpa.c
+++ b/drivers/net/ethernet/sfc/ef100_vdpa.c
@@ -223,10 +223,19 @@ static int vdpa_allocate_vis(struct efx_nic *efx, unsigned int *allocated_vis)
 static void ef100_vdpa_delete(struct efx_nic *efx)
 {
 	struct vdpa_device *vdpa_dev;
+	int rc;
 
 	if (efx->vdpa_nic) {
 		vdpa_dev = &efx->vdpa_nic->vdpa_dev;
 		ef100_vdpa_reset(vdpa_dev);
+		if (efx->mcdi_buf_mode == EFX_BUF_MODE_VDPA) {
+			rc = ef100_vdpa_map_mcdi_buffer(efx);
+			if (rc) {
+				pci_err(efx->pci_dev,
+					"map_mcdi_buffer failed, err: %d\n",
+					rc);
+			}
+		}
 
 		/* replace with _vdpa_unregister_device later */
 		put_device(&vdpa_dev->dev);
@@ -276,6 +285,21 @@ static int get_net_config(struct ef100_vdpa_nic *vdpa_nic)
 	return 0;
 }
 
+static void unmap_mcdi_buffer(struct efx_nic *efx)
+{
+	struct ef100_nic_data *nic_data = efx->nic_data;
+	struct efx_mcdi_iface *mcdi;
+
+	mcdi = efx_mcdi(efx);
+	spin_lock_bh(&mcdi->iface_lock);
+	/* Save current MCDI mode to be restored later */
+	efx->vdpa_nic->mcdi_mode = mcdi->mode;
+	efx->mcdi_buf_mode = EFX_BUF_MODE_VDPA;
+	mcdi->mode = MCDI_MODE_FAIL;
+	spin_unlock_bh(&mcdi->iface_lock);
+	efx_nic_free_buffer(efx, &nic_data->mcdi_buf);
+}
+
 static struct ef100_vdpa_nic *ef100_vdpa_create(struct efx_nic *efx,
 						const char *dev_name,
 						enum ef100_vdpa_class dev_type,
@@ -342,6 +366,7 @@ static struct ef100_vdpa_nic *ef100_vdpa_create(struct efx_nic *efx,
 	for (i = 0; i < EF100_VDPA_MAC_FILTER_NTYPES; i++)
 		vdpa_nic->filters[i].filter_id = EFX_INVALID_FILTER_ID;
 
+	unmap_mcdi_buffer(efx);
 	rc = get_net_config(vdpa_nic);
 	if (rc)
 		goto err_put_device;
diff --git a/drivers/net/ethernet/sfc/ef100_vdpa.h b/drivers/net/ethernet/sfc/ef100_vdpa.h
index 49fb6be04eb3..0913ac2519cb 100644
--- a/drivers/net/ethernet/sfc/ef100_vdpa.h
+++ b/drivers/net/ethernet/sfc/ef100_vdpa.h
@@ -147,6 +147,7 @@ struct ef100_vdpa_filter {
  * @status: device status as per VIRTIO spec
  * @features: negotiated feature bits
  * @max_queue_pairs: maximum number of queue pairs supported
+ * @mcdi_mode: MCDI mode at the time of unmapping VF mcdi buffer
  * @net_config: virtio_net_config data
  * @vring: vring information of the vDPA device.
  * @mac_address: mac address of interface associated with this vdpa device
@@ -166,6 +167,7 @@ struct ef100_vdpa_nic {
 	u8 status;
 	u64 features;
 	u32 max_queue_pairs;
+	enum efx_mcdi_mode mcdi_mode;
 	struct virtio_net_config net_config;
 	struct ef100_vdpa_vring_info vring[EF100_VDPA_MAX_QUEUES_PAIRS * 2];
 	u8 *mac_address;
@@ -185,6 +187,7 @@ int ef100_vdpa_add_filter(struct ef100_vdpa_nic *vdpa_nic,
 int ef100_vdpa_init_vring(struct ef100_vdpa_nic *vdpa_nic, u16 idx);
 void ef100_vdpa_irq_vectors_free(void *data);
 int ef100_vdpa_reset(struct vdpa_device *vdev);
+int ef100_vdpa_map_mcdi_buffer(struct efx_nic *efx);
 
 static inline bool efx_vdpa_is_little_endian(struct ef100_vdpa_nic *vdpa_nic)
 {
diff --git a/drivers/net/ethernet/sfc/ef100_vdpa_ops.c b/drivers/net/ethernet/sfc/ef100_vdpa_ops.c
index db86c2693950..c6c9458f0e6f 100644
--- a/drivers/net/ethernet/sfc/ef100_vdpa_ops.c
+++ b/drivers/net/ethernet/sfc/ef100_vdpa_ops.c
@@ -711,12 +711,47 @@ static int ef100_vdpa_suspend(struct vdpa_device *vdev)
 	mutex_unlock(&vdpa_nic->lock);
 	return rc;
 }
+
+int ef100_vdpa_map_mcdi_buffer(struct efx_nic *efx)
+{
+	struct ef100_nic_data *nic_data = efx->nic_data;
+	struct efx_mcdi_iface *mcdi;
+	int rc;
+
+	/* Update VF's MCDI buffer when switching out of vdpa mode */
+	rc = efx_nic_alloc_buffer(efx, &nic_data->mcdi_buf,
+				  MCDI_BUF_LEN, GFP_KERNEL);
+	if (rc)
+		return rc;
+
+	mcdi = efx_mcdi(efx);
+	spin_lock_bh(&mcdi->iface_lock);
+	mcdi->mode = efx->vdpa_nic->mcdi_mode;
+	efx->mcdi_buf_mode = EFX_BUF_MODE_EF100;
+	spin_unlock_bh(&mcdi->iface_lock);
+
+	return 0;
+}
+
 static void ef100_vdpa_free(struct vdpa_device *vdev)
 {
 	struct ef100_vdpa_nic *vdpa_nic = get_vdpa_nic(vdev);
+	int rc;
 	int i;
 
 	if (vdpa_nic) {
+		if (vdpa_nic->efx->mcdi_buf_mode == EFX_BUF_MODE_VDPA) {
+			/* This will only be called via call to put_device()
+			 * on vdpa device creation failure
+			 */
+			rc = ef100_vdpa_map_mcdi_buffer(vdpa_nic->efx);
+			if (rc) {
+				dev_err(&vdev->dev,
+					"map_mcdi_buffer failed, err: %d\n",
+					rc);
+			}
+		}
+
 		for (i = 0; i < (vdpa_nic->max_queue_pairs * 2); i++) {
 			reset_vring(vdpa_nic, i);
 			if (vdpa_nic->vring[i].vring_ctx)
diff --git a/drivers/net/ethernet/sfc/mcdi.h b/drivers/net/ethernet/sfc/mcdi.h
index 2c526d2edeb6..bc4de3b4e6f3 100644
--- a/drivers/net/ethernet/sfc/mcdi.h
+++ b/drivers/net/ethernet/sfc/mcdi.h
@@ -6,6 +6,9 @@
 
 #ifndef EFX_MCDI_H
 #define EFX_MCDI_H
+#include "mcdi_pcol.h"
+
+#define MCDI_BUF_LEN (8 + MCDI_CTL_SDU_LEN_MAX)
 
 /**
  * enum efx_mcdi_state - MCDI request handling state
diff --git a/drivers/net/ethernet/sfc/net_driver.h b/drivers/net/ethernet/sfc/net_driver.h
index 948c7a06403a..9cdfeb6ad05a 100644
--- a/drivers/net/ethernet/sfc/net_driver.h
+++ b/drivers/net/ethernet/sfc/net_driver.h
@@ -848,6 +848,16 @@ enum efx_xdp_tx_queues_mode {
 
 struct efx_mae;
 
+/**
+ * enum efx_buf_alloc_mode - buffer allocation mode
+ * @EFX_BUF_MODE_EF100: buffer setup in ef100 mode
+ * @EFX_BUF_MODE_VDPA: buffer setup in vdpa mode
+ */
+enum efx_buf_alloc_mode {
+	EFX_BUF_MODE_EF100,
+	EFX_BUF_MODE_VDPA
+};
+
 /**
  * struct efx_nic - an Efx NIC
  * @name: Device name (net device name or bus id before net device registered)
@@ -877,6 +887,7 @@ struct efx_mae;
  * @irq_rx_mod_step_us: Step size for IRQ moderation for RX event queues
  * @irq_rx_moderation_us: IRQ moderation time for RX event queues
  * @msg_enable: Log message enable flags
+ * @mcdi_buf_mode: mcdi buffer allocation mode
  * @state: Device state number (%STATE_*). Serialised by the rtnl_lock.
  * @reset_pending: Bitmask for pending resets
  * @tx_queue: TX DMA queues
@@ -1045,6 +1056,7 @@ struct efx_nic {
 	u32 msg_enable;
 
 	enum nic_state state;
+	enum efx_buf_alloc_mode mcdi_buf_mode;
 	unsigned long reset_pending;
 
 	struct efx_channel *channel[EFX_MAX_CHANNELS];
