forked from mirrors/linux
98cd02da46
It can be useful to access the name for the heap, so provide an accessor to do so. Cc: Daniel Vetter <daniel@ffwll.ch> Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: Liam Mark <lmark@codeaurora.org> Cc: Chris Goldsworthy <cgoldswo@codeaurora.org> Cc: Laura Abbott <labbott@kernel.org> Cc: Brian Starkey <Brian.Starkey@arm.com> Cc: Hridya Valsaraju <hridya@google.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Sandeep Patil <sspatil@google.com> Cc: Daniel Mentz <danielmentz@google.com> Cc: Ørjan Eide <orjan.eide@arm.com> Cc: Robin Murphy <robin.murphy@arm.com> Cc: Ezequiel Garcia <ezequiel@collabora.com> Cc: Simon Ser <contact@emersion.fr> Cc: James Jones <jajones@nvidia.com> Cc: linux-media@vger.kernel.org Cc: dri-devel@lists.freedesktop.org Signed-off-by: John Stultz <john.stultz@linaro.org> Acked-by: Daniel Vetter <daniel@ffwll.ch> Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20210209194818.2459062-1-john.stultz@linaro.org
68 lines
1.6 KiB
C
68 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* DMABUF Heaps Allocation Infrastructure
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*
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* Copyright (C) 2011 Google, Inc.
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* Copyright (C) 2019 Linaro Ltd.
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*/
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#ifndef _DMA_HEAPS_H
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#define _DMA_HEAPS_H
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#include <linux/cdev.h>
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#include <linux/types.h>
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struct dma_heap;
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/**
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* struct dma_heap_ops - ops to operate on a given heap
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* @allocate: allocate dmabuf and return struct dma_buf ptr
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*
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* allocate returns dmabuf on success, ERR_PTR(-errno) on error.
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*/
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struct dma_heap_ops {
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struct dma_buf *(*allocate)(struct dma_heap *heap,
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unsigned long len,
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unsigned long fd_flags,
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unsigned long heap_flags);
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};
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/**
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* struct dma_heap_export_info - information needed to export a new dmabuf heap
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* @name: used for debugging/device-node name
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* @ops: ops struct for this heap
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* @priv: heap exporter private data
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*
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* Information needed to export a new dmabuf heap.
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*/
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struct dma_heap_export_info {
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const char *name;
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const struct dma_heap_ops *ops;
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void *priv;
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};
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/**
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* dma_heap_get_drvdata() - get per-heap driver data
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* @heap: DMA-Heap to retrieve private data for
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*
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* Returns:
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* The per-heap data for the heap.
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*/
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void *dma_heap_get_drvdata(struct dma_heap *heap);
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/**
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* dma_heap_get_name() - get heap name
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* @heap: DMA-Heap to retrieve private data for
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*
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* Returns:
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* The char* for the heap name.
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*/
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const char *dma_heap_get_name(struct dma_heap *heap);
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/**
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* dma_heap_add - adds a heap to dmabuf heaps
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* @exp_info: information needed to register this heap
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*/
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struct dma_heap *dma_heap_add(const struct dma_heap_export_info *exp_info);
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#endif /* _DMA_HEAPS_H */
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