Commit | Line | Data |
---|---|---|
a0308938 DS |
1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | /* | |
3 | * dma-bufs for virtio exported objects | |
4 | * | |
5 | * Copyright (C) 2020 Google, Inc. | |
6 | */ | |
7 | ||
8 | #ifndef _LINUX_VIRTIO_DMA_BUF_H | |
9 | #define _LINUX_VIRTIO_DMA_BUF_H | |
10 | ||
11 | #include <linux/dma-buf.h> | |
12 | #include <linux/uuid.h> | |
13 | #include <linux/virtio.h> | |
14 | ||
15 | /** | |
16 | * struct virtio_dma_buf_ops - operations possible on exported object dma-buf | |
17 | * @ops: the base dma_buf_ops. ops.attach MUST be virtio_dma_buf_attach. | |
18 | * @device_attach: [optional] callback invoked by virtio_dma_buf_attach during | |
19 | * all attach operations. | |
20 | * @get_uid: [required] callback to get the uuid of the exported object. | |
21 | */ | |
22 | struct virtio_dma_buf_ops { | |
23 | struct dma_buf_ops ops; | |
24 | int (*device_attach)(struct dma_buf *dma_buf, | |
25 | struct dma_buf_attachment *attach); | |
26 | int (*get_uuid)(struct dma_buf *dma_buf, uuid_t *uuid); | |
27 | }; | |
28 | ||
29 | int virtio_dma_buf_attach(struct dma_buf *dma_buf, | |
30 | struct dma_buf_attachment *attach); | |
31 | ||
32 | struct dma_buf *virtio_dma_buf_export | |
33 | (const struct dma_buf_export_info *exp_info); | |
34 | bool is_virtio_dma_buf(struct dma_buf *dma_buf); | |
35 | int virtio_dma_buf_get_uuid(struct dma_buf *dma_buf, uuid_t *uuid); | |
36 | ||
37 | #endif /* _LINUX_VIRTIO_DMA_BUF_H */ |