drivers/virtio/virtio_magma.h

// Copyright 2019 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef _DRIVERS_VIRTIO_VIRTIO_MAGMA_H
#define _DRIVERS_VIRTIO_VIRTIO_MAGMA_H

#include <linux/fs.h>
#include <linux/types.h>
#include <linux/virtio.h>
#include <linux/virtmagma.h>

#define VIRTMAGMA_VQ_IN 0
#define VIRTMAGMA_VQ_OUT 1
#define VIRTMAGMA_QUEUE_COUNT 2

struct virtmagma_info {
	bool enabled;
	int (*virtio_probe)(struct virtmagma_info* vi, struct virtio_device *vdev);
	void (*virtio_remove)(struct virtmagma_info* vi, struct virtio_device *vdev);
	long (*ioctl)(struct virtmagma_info* vi, unsigned int cmd, void __user *ptr);
	void (*virtio_find_vqs_prepare)(struct virtmagma_info* vi, vq_callback_t **vq_callbacks, const char **vq_names);
	void (*virtio_find_vqs_complete)(struct virtmagma_info* vi, struct virtqueue **vqs);
	int (*virtio_device_ready_prepare)(struct virtmagma_info* vi);
	void (*virtio_device_ready_complete)(struct virtmagma_info* vi);
	uint32_t queue_count;
	void *private;
};

int virtmagma_init(struct virtmagma_info *vi);

extern const size_t magma_info_offset;

#endif /* _DRIVERS_VIRTIO_VIRTIO_MAGMA_H */