https://github.com/torvalds/linux
- HEAD
- refs/heads/arm64-uaccess
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/certifi-2024.7.4
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/idna-3.7
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/requests-2.32.2
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/setuptools-70.0.0
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/urllib3-2.2.2
- refs/heads/master
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Tip revision: 41bccc98fb7931d63d03f326a746ac4d429c1dd3 authored by Linus Torvalds on 29 January 2024, 01:01:12 UTC
Linux 6.8-rc2
Linux 6.8-rc2
Tip revision: 41bccc9
dma-heap.h
/* SPDX-License-Identifier: GPL-2.0 */
/*
* DMABUF Heaps Allocation Infrastructure
*
* Copyright (C) 2011 Google, Inc.
* Copyright (C) 2019 Linaro Ltd.
*/
#ifndef _DMA_HEAPS_H
#define _DMA_HEAPS_H
#include <linux/cdev.h>
#include <linux/types.h>
struct dma_heap;
/**
* struct dma_heap_ops - ops to operate on a given heap
* @allocate: allocate dmabuf and return struct dma_buf ptr
*
* allocate returns dmabuf on success, ERR_PTR(-errno) on error.
*/
struct dma_heap_ops {
struct dma_buf *(*allocate)(struct dma_heap *heap,
unsigned long len,
unsigned long fd_flags,
unsigned long heap_flags);
};
/**
* struct dma_heap_export_info - information needed to export a new dmabuf heap
* @name: used for debugging/device-node name
* @ops: ops struct for this heap
* @priv: heap exporter private data
*
* Information needed to export a new dmabuf heap.
*/
struct dma_heap_export_info {
const char *name;
const struct dma_heap_ops *ops;
void *priv;
};
/**
* dma_heap_get_drvdata() - get per-heap driver data
* @heap: DMA-Heap to retrieve private data for
*
* Returns:
* The per-heap data for the heap.
*/
void *dma_heap_get_drvdata(struct dma_heap *heap);
/**
* dma_heap_get_name() - get heap name
* @heap: DMA-Heap to retrieve private data for
*
* Returns:
* The char* for the heap name.
*/
const char *dma_heap_get_name(struct dma_heap *heap);
/**
* dma_heap_add - adds a heap to dmabuf heaps
* @exp_info: information needed to register this heap
*/
struct dma_heap *dma_heap_add(const struct dma_heap_export_info *exp_info);
#endif /* _DMA_HEAPS_H */