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