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- /* SPDX-License-Identifier: GPL-2.0 */
- /*
- * dma-bufs for virtio exported objects
- *
- * Copyright (C) 2020 Google, Inc.
- */
- #ifndef _LINUX_VIRTIO_DMA_BUF_H
- #define _LINUX_VIRTIO_DMA_BUF_H
- #include <linux/dma-buf.h>
- #include <linux/uuid.h>
- #include <linux/virtio.h>
- /**
- * struct virtio_dma_buf_ops - operations possible on exported object dma-buf
- * @ops: the base dma_buf_ops. ops.attach MUST be virtio_dma_buf_attach.
- * @device_attach: [optional] callback invoked by virtio_dma_buf_attach during
- * all attach operations.
- * @get_uid: [required] callback to get the uuid of the exported object.
- */
- struct virtio_dma_buf_ops {
- struct dma_buf_ops ops;
- int (*device_attach)(struct dma_buf *dma_buf,
- struct dma_buf_attachment *attach);
- int (*get_uuid)(struct dma_buf *dma_buf, uuid_t *uuid);
- };
- int virtio_dma_buf_attach(struct dma_buf *dma_buf,
- struct dma_buf_attachment *attach);
- struct dma_buf *virtio_dma_buf_export
- (const struct dma_buf_export_info *exp_info);
- bool is_virtio_dma_buf(struct dma_buf *dma_buf);
- int virtio_dma_buf_get_uuid(struct dma_buf *dma_buf, uuid_t *uuid);
- #endif /* _LINUX_VIRTIO_DMA_BUF_H */
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