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b9578c4945
dma_heap_allocation_data defines the UAPI as follows:
struct dma_heap_allocation_data {
__u64 len;
__u32 fd;
__u32 fd_flags;
__u64 heap_flags;
};
But dma heaps are casting both fd_flags and heap_flags into
unsigned long. This patch makes dma heaps - cma heap and
system heap have consistent types with UAPI.
Signed-off-by: Barry Song <v-songbaohua@oppo.com>
Acked-by: John Stultz <jstultz@google.com>
Reviewed-by: Carlos Llamas <cmllamas@google.com>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240606020213.49854-1-21cnbao@gmail.com
69 lines
1.6 KiB
C
69 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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u32 fd_flags,
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u64 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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