diff --git a/drivers/vfio/mdev/Kconfig b/drivers/vfio/mdev/Kconfig
index 5da27f2100f9..c488c31fc137 100644
--- a/drivers/vfio/mdev/Kconfig
+++ b/drivers/vfio/mdev/Kconfig
@@ -16,3 +16,10 @@ config VFIO_MDEV_DEVICE
 	default n
 	help
 	  VFIO based driver for Mediated devices.
+
+config VIRTIO_MDEV_DEVICE
+	tristate "VIRTIO driver for Mediated devices"
+	depends on VFIO_MDEV && VIRTIO
+	default n
+	help
+	  VIRTIO based driver for Mediated devices.
diff --git a/drivers/vfio/mdev/Makefile b/drivers/vfio/mdev/Makefile
index 101516fdf375..99d31e29c23e 100644
--- a/drivers/vfio/mdev/Makefile
+++ b/drivers/vfio/mdev/Makefile
@@ -4,3 +4,4 @@ mdev-y := mdev_core.o mdev_sysfs.o mdev_driver.o
 
 obj-$(CONFIG_VFIO_MDEV) += mdev.o
 obj-$(CONFIG_VFIO_MDEV_DEVICE) += vfio_mdev.o
+obj-$(CONFIG_VIRTIO_MDEV_DEVICE) += virtio_mdev.o
diff --git a/drivers/vfio/mdev/virtio_mdev.c b/drivers/vfio/mdev/virtio_mdev.c
new file mode 100644
index 000000000000..5ff09089297e
--- /dev/null
+++ b/drivers/vfio/mdev/virtio_mdev.c
@@ -0,0 +1,500 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * VIRTIO based driver for Mediated device
+ *
+ * Copyright (c) 2019, Red Hat. All rights reserved.
+ *     Author: Jason Wang <jasowang@redhat.com>
+ *
+ * Based on Virtio MMIO driver.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/uuid.h>
+#include <linux/mdev.h>
+#include <linux/virtio.h>
+#include <linux/virtio_config.h>
+#include <linux/virtio_ring.h>
+#include <uapi/linux/virtio_mdev.h>
+#include "mdev_private.h"
+
+#define DRIVER_VERSION  "0.1"
+#define DRIVER_AUTHOR   "Red Hat Corporation"
+#define DRIVER_DESC     "VIRTIO based driver for Mediated device"
+
+#define to_virtio_mdev_device(dev) \
+	container_of(dev, struct virtio_mdev_device, vdev)
+
+struct virtio_mdev_device {
+	struct virtio_device vdev;
+	struct mdev_device *mdev;
+	unsigned long version;
+
+	struct virtqueue **vqs;
+	spinlock_t lock;
+};
+
+struct virtio_mdev_vq_info {
+	/* the actual virtqueue */
+	struct virtqueue *vq;
+
+	/* the list node for the virtqueues list */
+	struct list_head node;
+};
+
+static u32 virtio_mdev_readl(struct mdev_device *mdev,
+			     loff_t off)
+{
+	struct mdev_parent *parent = mdev->parent;
+	ssize_t len;
+	u32 val;
+
+	if (unlikely(!parent->ops->read))
+		return 0xFFFFFFFF;
+
+	len = parent->ops->read(mdev, (char *)&val, 4, &off);
+	if (len != 4)
+		return 0xFFFFFFFF;
+
+	return val;
+}
+
+static void virtio_mdev_writel(struct mdev_device *mdev,
+			       loff_t off, u32 val)
+{
+	struct mdev_parent *parent = mdev->parent;
+
+	if (unlikely(!parent->ops->write))
+		return;
+
+	parent->ops->write(mdev, (char *)&val, 4, &off);
+
+	return;
+}
+
+static void virtio_mdev_get(struct virtio_device *vdev, unsigned offset,
+			    void *buf, unsigned len)
+{
+	struct virtio_mdev_device *vm_dev = to_virtio_mdev_device(vdev);
+	struct mdev_device *mdev = vm_dev->mdev;
+	struct mdev_parent *parent = mdev->parent;
+
+	loff_t off = offset + VIRTIO_MDEV_CONFIG;
+
+	switch (len) {
+	case 1:
+		*(u8 *)buf = parent->ops->read(mdev, buf, 1, &off);
+		break;
+	case 2:
+		*(u16 *)buf = parent->ops->read(mdev, buf, 2, &off);
+		break;
+	case 4:
+		*(u32 *)buf = parent->ops->read(mdev, buf, 4, &off);
+		break;
+	case 8:
+		*(u32 *)buf = parent->ops->read(mdev, buf, 4, &off);
+		*((u32 *)buf + 1) = parent->ops->read(mdev, buf, 4, &off);
+		break;
+	default:
+		BUG();
+	}
+
+	return;
+}
+
+static void virtio_mdev_set(struct virtio_device *vdev, unsigned offset,
+			    const void *buf, unsigned len)
+{
+	struct virtio_mdev_device *vm_dev = to_virtio_mdev_device(vdev);
+	struct mdev_device *mdev = vm_dev->mdev;
+	struct mdev_parent *parent = mdev->parent;
+	loff_t off = offset + VIRTIO_MDEV_CONFIG;
+
+	switch (len) {
+	case 1:
+	case 2:
+	case 4:
+	case 8:
+		break;
+	default:
+		BUG();
+	}
+
+	parent->ops->write(mdev, buf, len, &off);
+
+	return;
+}
+
+static u32 virtio_mdev_generation(struct virtio_device *vdev)
+{
+	struct virtio_mdev_device *vm_dev = to_virtio_mdev_device(vdev);
+
+	if (vm_dev->version == 1)
+		return 0;
+	else
+		return virtio_mdev_readl(vm_dev->mdev,
+					 VIRTIO_MDEV_CONFIG_GENERATION);
+}
+
+static u8 virtio_mdev_get_status(struct virtio_device *vdev)
+{
+	struct virtio_mdev_device *vm_dev = to_virtio_mdev_device(vdev);
+
+	return virtio_mdev_readl(vm_dev->mdev, VIRTIO_MDEV_STATUS) & 0xff;
+}
+
+static void virtio_mdev_set_status(struct virtio_device *vdev, u8 status)
+{
+	struct virtio_mdev_device *vm_dev = to_virtio_mdev_device(vdev);
+
+	virtio_mdev_writel(vm_dev->mdev, VIRTIO_MDEV_STATUS, status);
+}
+
+static void virtio_mdev_reset(struct virtio_device *vdev)
+{
+	struct virtio_mdev_device *vm_dev = to_virtio_mdev_device(vdev);
+
+	virtio_mdev_writel(vm_dev->mdev, VIRTIO_MDEV_STATUS, 0);
+}
+
+static bool virtio_mdev_notify(struct virtqueue *vq)
+{
+	struct virtio_mdev_device *vm_dev = to_virtio_mdev_device(vq->vdev);
+
+	/* We write the queue's selector into the notification register to
+	 * signal the other end */
+	virtio_mdev_writel(vm_dev->mdev, VIRTIO_MDEV_QUEUE_NOTIFY,
+			   vq->index);
+	return true;
+}
+
+static irqreturn_t virtio_mdev_config_cb(void *private)
+{
+	struct virtio_mdev_device *vm_dev = private;
+
+	virtio_config_changed(&vm_dev->vdev);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t virtio_mdev_virtqueue_cb(void *private)
+{
+	struct virtio_mdev_vq_info *info = private;
+
+	return vring_interrupt(0, info->vq);
+}
+
+static struct virtqueue *
+virtio_mdev_setup_vq(struct virtio_device *vdev, unsigned index,
+		     void (*callback)(struct virtqueue *vq),
+		     const char *name, bool ctx)
+{
+	struct virtio_mdev_device *vm_dev = to_virtio_mdev_device(vdev);
+	struct mdev_device *mdev= vm_dev->mdev;
+	struct mdev_parent *parent = mdev->parent;
+	struct virtio_mdev_vq_info *info;
+	struct virtio_mdev_callback cb;
+	struct virtqueue *vq;
+	unsigned long flags;
+	u32 align, num;
+	u64 addr;
+	int err;
+
+	if (!name)
+		return NULL;
+
+	/* Select the queue we're interested in */
+	virtio_mdev_writel(vm_dev->mdev, VIRTIO_MDEV_QUEUE_SEL, index);
+
+	/* Queue shouldn't already be set up. */
+	if (virtio_mdev_readl(vm_dev->mdev, VIRTIO_MDEV_QUEUE_READY)) {
+		err = -ENOENT;
+		goto error_available;
+	}
+
+	/* Allocate and fill out our active queue description */
+	info = kmalloc(sizeof(*info), GFP_KERNEL);
+	if (!info) {
+		err = -ENOMEM;
+		goto error_kmalloc;
+	}
+
+	num = virtio_mdev_readl(vm_dev->mdev, VIRTIO_MDEV_QUEUE_NUM_MAX);
+	if (num == 0) {
+		err = -ENOENT;
+		goto error_new_virtqueue;
+	}
+
+	/* Create the vring */
+	align = virtio_mdev_readl(vm_dev->mdev, VIRTIO_MDEV_QUEUE_ALIGN);
+	vq = vring_create_virtqueue(index, num, align, vdev,
+				    true, true, ctx,
+				    virtio_mdev_notify, callback, name);
+	if (!vq) {
+		err = -ENOMEM;
+		goto error_new_virtqueue;
+	}
+
+	/* Setup virtqueue callback */
+	cb.callback = virtio_mdev_virtqueue_cb;
+	cb.private = info;
+	err = parent->ops->ioctl(mdev, VIRTIO_MDEV_SET_VQ_CALLBACK,
+				 (unsigned long)&cb);
+	if (err) {
+		err = -EINVAL;
+		goto error_callback;
+	}
+
+	virtio_mdev_writel(vm_dev->mdev, VIRTIO_MDEV_QUEUE_NUM,
+			   virtqueue_get_vring_size(vq));
+	addr = virtqueue_get_desc_addr(vq);
+	virtio_mdev_writel(vm_dev->mdev, VIRTIO_MDEV_QUEUE_DESC_LOW, (u32)addr);
+	virtio_mdev_writel(vm_dev->mdev, VIRTIO_MDEV_QUEUE_DESC_HIGH,
+			   (u32)(addr >> 32));
+
+	addr = virtqueue_get_avail_addr(vq);
+	virtio_mdev_writel(vm_dev->mdev, VIRTIO_MDEV_QUEUE_AVAIL_LOW, (u32)addr);
+	virtio_mdev_writel(vm_dev->mdev, VIRTIO_MDEV_QUEUE_AVAIL_HIGH,
+			   (u32)(addr >> 32));
+
+	addr = virtqueue_get_used_addr(vq);
+	virtio_mdev_writel(vm_dev->mdev, VIRTIO_MDEV_QUEUE_USED_LOW, (u32)addr);
+	virtio_mdev_writel(vm_dev->mdev, VIRTIO_MDEV_QUEUE_USED_HIGH, (u32)(addr >> 32));
+
+	virtio_mdev_writel(vm_dev->mdev, VIRTIO_MDEV_QUEUE_READY, 1);
+
+	vq->priv = info;
+	info->vq = vq;
+
+	return vq;
+
+error_callback:
+	vring_del_virtqueue(vq);
+error_new_virtqueue:
+	virtio_mdev_writel(vm_dev->mdev, VIRTIO_MDEV_QUEUE_READY, 0);
+	WARN_ON(virtio_mdev_readl(vm_dev->mdev, VIRTIO_MDEV_QUEUE_READY));
+	kfree(info);
+error_kmalloc:
+error_available:
+	return ERR_PTR(err);
+
+}
+
+static void virtio_mdev_del_vq(struct virtqueue *vq)
+{
+	struct virtio_mdev_device *vm_dev = to_virtio_mdev_device(vq->vdev);
+	struct virtio_mdev_vq_info *info = vq->priv;
+	unsigned long flags;
+	unsigned int index = vq->index;
+
+	/* Select and deactivate the queue */
+	virtio_mdev_writel(vm_dev->mdev, VIRTIO_MDEV_QUEUE_SEL, index);
+	virtio_mdev_writel(vm_dev->mdev,VIRTIO_MDEV_QUEUE_READY, 0);
+	WARN_ON(virtio_mdev_readl(vm_dev->mdev, VIRTIO_MDEV_QUEUE_READY));
+
+	vring_del_virtqueue(vq);
+
+	kfree(info);
+}
+
+static void virtio_mdev_del_vqs(struct virtio_device *vdev)
+{
+	struct virtqueue *vq, *n;
+
+	list_for_each_entry_safe(vq, n, &vdev->vqs, list)
+		virtio_mdev_del_vq(vq);
+
+	return;
+}
+
+static int virtio_mdev_find_vqs(struct virtio_device *vdev, unsigned nvqs,
+				struct virtqueue *vqs[],
+				vq_callback_t *callbacks[],
+				const char * const names[],
+				const bool *ctx,
+				struct irq_affinity *desc)
+{
+	struct virtio_mdev_device *vm_dev = to_virtio_mdev_device(vdev);
+	struct mdev_device *mdev = vm_dev->mdev;
+	struct mdev_parent *parent = mdev->parent;
+	struct virtio_mdev_callback cb;
+	int i, err, queue_idx = 0;
+	vm_dev->vqs = kmalloc_array(queue_idx, sizeof(*vm_dev->vqs),
+				    GFP_KERNEL);
+	if (!vm_dev->vqs)
+		return -ENOMEM;
+
+	for (i = 0; i < nvqs; ++i) {
+		if (!names[i]) {
+			vqs[i] = NULL;
+			continue;
+		}
+
+		vqs[i] = virtio_mdev_setup_vq(vdev, queue_idx++,
+					      callbacks[i], names[i], ctx ?
+					      ctx[i] : false);
+		if (IS_ERR(vqs[i])) {
+			err = PTR_ERR(vqs[i]);
+			goto err_setup_vq;
+		}
+	}
+
+	cb.callback = virtio_mdev_config_cb;
+	cb.private = vm_dev;
+	err = parent->ops->ioctl(mdev, VIRTIO_MDEV_SET_CONFIG_CALLBACK,
+				 (unsigned long)&cb);
+	if (err)
+		goto err_setup_vq;
+
+	return 0;
+
+err_setup_vq:
+	kfree(vm_dev->vqs);
+	virtio_mdev_del_vqs(vdev);
+	return err;
+}
+
+static u64 virtio_mdev_get_features(struct virtio_device *vdev)
+{
+	struct virtio_mdev_device *vm_dev = to_virtio_mdev_device(vdev);
+	u64 features;
+
+	virtio_mdev_writel(vm_dev->mdev, VIRTIO_MDEV_DEVICE_FEATURES_SEL, 1);
+	features = virtio_mdev_readl(vm_dev->mdev, VIRTIO_MDEV_DEVICE_FEATURES);
+	features <<= 32;
+
+	virtio_mdev_writel(vm_dev->mdev, VIRTIO_MDEV_DEVICE_FEATURES_SEL, 0);
+	features |= virtio_mdev_readl(vm_dev->mdev, VIRTIO_MDEV_DEVICE_FEATURES);
+
+	return features;
+}
+
+static int virtio_mdev_finalize_features(struct virtio_device *vdev)
+{
+	struct virtio_mdev_device *vm_dev = to_virtio_mdev_device(vdev);
+
+	/* Give virtio_ring a chance to accept features. */
+	vring_transport_features(vdev);
+
+	virtio_mdev_writel(vm_dev->mdev, VIRTIO_MDEV_DRIVER_FEATURES_SEL, 1);
+	virtio_mdev_writel(vm_dev->mdev, VIRTIO_MDEV_DRIVER_FEATURES,
+			   (u32)(vdev->features >> 32));
+
+	virtio_mdev_writel(vm_dev->mdev, VIRTIO_MDEV_DRIVER_FEATURES_SEL, 0);
+	virtio_mdev_writel(vm_dev->mdev, VIRTIO_MDEV_DRIVER_FEATURES,
+			   (u32)vdev->features);
+
+	return 0;
+}
+
+static const char *virtio_mdev_bus_name(struct virtio_device *vdev)
+{
+	struct virtio_mdev_device *vm_dev = to_virtio_mdev_device(vdev);
+	struct mdev_device *mdev = vm_dev->mdev;
+
+	return dev_name(&mdev->dev);
+}
+
+static const struct virtio_config_ops virtio_mdev_config_ops = {
+	.get		= virtio_mdev_get,
+	.set		= virtio_mdev_set,
+	.generation	= virtio_mdev_generation,
+	.get_status	= virtio_mdev_get_status,
+	.set_status	= virtio_mdev_set_status,
+	.reset		= virtio_mdev_reset,
+	.find_vqs	= virtio_mdev_find_vqs,
+	.del_vqs	= virtio_mdev_del_vqs,
+	.get_features	= virtio_mdev_get_features,
+	.finalize_features = virtio_mdev_finalize_features,
+	.bus_name	= virtio_mdev_bus_name,
+};
+
+static void virtio_mdev_release_dev(struct device *_d)
+{
+	struct virtio_device *vdev =
+	       container_of(_d, struct virtio_device, dev);
+	struct virtio_mdev_device *vm_dev =
+	       container_of(vdev, struct virtio_mdev_device, vdev);
+
+	devm_kfree(_d, vm_dev);
+}
+
+static int virtio_mdev_probe(struct device *dev)
+{
+	struct mdev_device *mdev = to_mdev_device(dev);
+	struct virtio_mdev_device *vm_dev;
+	unsigned long magic;
+	int rc;
+
+	magic = virtio_mdev_readl(mdev, VIRTIO_MDEV_MAGIC_VALUE);
+	if (magic != ('v' | 'i' << 8 | 'r' << 16 | 't' << 24)) {
+		dev_warn(dev, "Wrong magic value 0x%08lx!\n", magic);
+		return -ENODEV;
+	}
+
+	vm_dev = devm_kzalloc(dev, sizeof(*vm_dev), GFP_KERNEL);
+	if (!vm_dev)
+		return -ENOMEM;
+
+	vm_dev->vdev.dev.parent = dev;
+	vm_dev->vdev.dev.release = virtio_mdev_release_dev;
+	vm_dev->vdev.config = &virtio_mdev_config_ops;
+	vm_dev->mdev = mdev;
+	vm_dev->vqs = NULL;
+	spin_lock_init(&vm_dev->lock);
+
+	vm_dev->version = virtio_mdev_readl(mdev, VIRTIO_MDEV_VERSION);
+	if (vm_dev->version != 1) {
+		dev_err(dev, "Version %ld not supported!\n",
+			vm_dev->version);
+		return -ENXIO;
+	}
+
+	vm_dev->vdev.id.device = virtio_mdev_readl(mdev, VIRTIO_MDEV_DEVICE_ID);
+	if (vm_dev->vdev.id.device == 0)
+		return -ENODEV;
+
+	vm_dev->vdev.id.vendor = virtio_mdev_readl(mdev, VIRTIO_MDEV_VENDOR_ID);
+	rc = register_virtio_device(&vm_dev->vdev);
+	if (rc)
+		put_device(dev);
+
+	dev_set_drvdata(dev, vm_dev);
+
+	return rc;
+
+}
+
+static void virtio_mdev_remove(struct device *dev)
+{
+	struct virtio_mdev_device *vm_dev = dev_get_drvdata(dev);
+
+	unregister_virtio_device(&vm_dev->vdev);
+}
+
+static struct mdev_driver virtio_mdev_driver = {
+	.name	= "virtio_mdev",
+	.probe	= virtio_mdev_probe,
+	.remove	= virtio_mdev_remove,
+};
+
+static int __init virtio_mdev_init(void)
+{
+	return mdev_register_driver(&virtio_mdev_driver, THIS_MODULE);
+}
+
+static void __exit virtio_mdev_exit(void)
+{
+	mdev_unregister_driver(&virtio_mdev_driver);
+}
+
+module_init(virtio_mdev_init)
+module_exit(virtio_mdev_exit)
+
+MODULE_VERSION(DRIVER_VERSION);
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
diff --git a/include/uapi/linux/virtio_mdev.h b/include/uapi/linux/virtio_mdev.h
new file mode 100644
index 000000000000..8040de6b960a
--- /dev/null
+++ b/include/uapi/linux/virtio_mdev.h
@@ -0,0 +1,131 @@
+/*
+ * Virtio mediated device driver
+ *
+ * Copyright 2019, Red Hat Corp.
+ *
+ * Based on Virtio MMIO driver by ARM Ltd, copyright ARM Ltd. 2011
+ *
+ * This header is BSD licensed so anyone can use the definitions to implement
+ * compatible drivers/servers.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of IBM nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL IBM OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#ifndef _LINUX_VIRTIO_MDEV_H
+#define _LINUX_VIRTIO_MDEV_H
+
+#include <linux/interrupt.h>
+#include <linux/vringh.h>
+#include <uapi/linux/virtio_net.h>
+
+/*
+ * Ioctls
+ */
+
+struct virtio_mdev_callback {
+	irqreturn_t (*callback)(void *);
+	void *private;
+};
+
+#define VIRTIO_MDEV 0xAF
+#define VIRTIO_MDEV_SET_VQ_CALLBACK _IOW(VIRTIO_MDEV, 0x00, \
+					 struct virtio_mdev_callback)
+#define VIRTIO_MDEV_SET_CONFIG_CALLBACK _IOW(VIRTIO_MDEV, 0x01, \
+					struct virtio_mdev_callback)
+
+#define VIRTIO_MDEV_DEVICE_API_STRING		"virtio-mdev"
+
+/*
+ * Control registers
+ */
+
+/* Magic value ("virt" string) - Read Only */
+#define VIRTIO_MDEV_MAGIC_VALUE		0x000
+
+/* Virtio device version - Read Only */
+#define VIRTIO_MDEV_VERSION		0x004
+
+/* Virtio device ID - Read Only */
+#define VIRTIO_MDEV_DEVICE_ID		0x008
+
+/* Virtio vendor ID - Read Only */
+#define VIRTIO_MDEV_VENDOR_ID		0x00c
+
+/* Bitmask of the features supported by the device (host)
+ * (32 bits per set) - Read Only */
+#define VIRTIO_MDEV_DEVICE_FEATURES	0x010
+
+/* Device (host) features set selector - Write Only */
+#define VIRTIO_MDEV_DEVICE_FEATURES_SEL	0x014
+
+/* Bitmask of features activated by the driver (guest)
+ * (32 bits per set) - Write Only */
+#define VIRTIO_MDEV_DRIVER_FEATURES	0x020
+
+/* Activated features set selector - Write Only */
+#define VIRTIO_MDEV_DRIVER_FEATURES_SEL	0x024
+
+/* Queue selector - Write Only */
+#define VIRTIO_MDEV_QUEUE_SEL		0x030
+
+/* Maximum size of the currently selected queue - Read Only */
+#define VIRTIO_MDEV_QUEUE_NUM_MAX	0x034
+
+/* Queue size for the currently selected queue - Write Only */
+#define VIRTIO_MDEV_QUEUE_NUM		0x038
+
+/* Ready bit for the currently selected queue - Read Write */
+#define VIRTIO_MDEV_QUEUE_READY		0x044
+
+/* Alignment of virtqueue - Read Only */
+#define VIRTIO_MDEV_QUEUE_ALIGN		0x048
+
+/* Queue notifier - Write Only */
+#define VIRTIO_MDEV_QUEUE_NOTIFY	0x050
+
+/* Device status register - Read Write */
+#define VIRTIO_MDEV_STATUS		0x060
+
+/* Selected queue's Descriptor Table address, 64 bits in two halves */
+#define VIRTIO_MDEV_QUEUE_DESC_LOW	0x080
+#define VIRTIO_MDEV_QUEUE_DESC_HIGH	0x084
+
+/* Selected queue's Available Ring address, 64 bits in two halves */
+#define VIRTIO_MDEV_QUEUE_AVAIL_LOW	0x090
+#define VIRTIO_MDEV_QUEUE_AVAIL_HIGH	0x094
+
+/* Selected queue's Used Ring address, 64 bits in two halves */
+#define VIRTIO_MDEV_QUEUE_USED_LOW	0x0a0
+#define VIRTIO_MDEV_QUEUE_USED_HIGH	0x0a4
+
+/* Configuration atomicity value */
+#define VIRTIO_MDEV_CONFIG_GENERATION	0x0fc
+
+/* The config space is defined by each driver as
+ * the per-driver configuration space - Read Write */
+#define VIRTIO_MDEV_CONFIG		0x100
+
+#endif
+
+
+/* Ready bit for the currently selected queue - Read Write */
