Commit 01357a5a authored by Christian König's avatar Christian König

dma-buf: cleanup dma_fence_unwrap implementation

Move the code from the inline functions into exported functions.
Signed-off-by: default avatarChristian König <christian.koenig@amd.com>
Acked-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20220518135844.3338-3-christian.koenig@amd.com
parent 0c5064fa
# SPDX-License-Identifier: GPL-2.0-only
obj-y := dma-buf.o dma-fence.o dma-fence-array.o dma-fence-chain.o \
dma-resv.o
dma-fence-unwrap.o dma-resv.o
obj-$(CONFIG_DMABUF_HEAPS) += dma-heap.o
obj-$(CONFIG_DMABUF_HEAPS) += heaps/
obj-$(CONFIG_SYNC_FILE) += sync_file.o
......
// SPDX-License-Identifier: GPL-2.0-only
/*
* dma-fence-util: misc functions for dma_fence objects
*
* Copyright (C) 2022 Advanced Micro Devices, Inc.
* Authors:
* Christian König <christian.koenig@amd.com>
*/
#include <linux/dma-fence.h>
#include <linux/dma-fence-array.h>
#include <linux/dma-fence-chain.h>
#include <linux/dma-fence-unwrap.h>
/* Internal helper to start new array iteration, don't use directly */
static struct dma_fence *
__dma_fence_unwrap_array(struct dma_fence_unwrap *cursor)
{
cursor->array = dma_fence_chain_contained(cursor->chain);
cursor->index = 0;
return dma_fence_array_first(cursor->array);
}
/**
* dma_fence_unwrap_first - return the first fence from fence containers
* @head: the entrypoint into the containers
* @cursor: current position inside the containers
*
* Unwraps potential dma_fence_chain/dma_fence_array containers and return the
* first fence.
*/
struct dma_fence *dma_fence_unwrap_first(struct dma_fence *head,
struct dma_fence_unwrap *cursor)
{
cursor->chain = dma_fence_get(head);
return __dma_fence_unwrap_array(cursor);
}
EXPORT_SYMBOL_GPL(dma_fence_unwrap_first);
/**
* dma_fence_unwrap_next - return the next fence from a fence containers
* @cursor: current position inside the containers
*
* Continue unwrapping the dma_fence_chain/dma_fence_array containers and return
* the next fence from them.
*/
struct dma_fence *dma_fence_unwrap_next(struct dma_fence_unwrap *cursor)
{
struct dma_fence *tmp;
++cursor->index;
tmp = dma_fence_array_next(cursor->array, cursor->index);
if (tmp)
return tmp;
cursor->chain = dma_fence_chain_walk(cursor->chain);
return __dma_fence_unwrap_array(cursor);
}
EXPORT_SYMBOL_GPL(dma_fence_unwrap_next);
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* fence-chain: chain fences together in a timeline
*
* Copyright (C) 2022 Advanced Micro Devices, Inc.
* Authors:
* Christian König <christian.koenig@amd.com>
......@@ -10,8 +8,7 @@
#ifndef __LINUX_DMA_FENCE_UNWRAP_H
#define __LINUX_DMA_FENCE_UNWRAP_H
#include <linux/dma-fence-chain.h>
#include <linux/dma-fence-array.h>
struct dma_fence;
/**
* struct dma_fence_unwrap - cursor into the container structure
......@@ -33,50 +30,9 @@ struct dma_fence_unwrap {
unsigned int index;
};
/* Internal helper to start new array iteration, don't use directly */
static inline struct dma_fence *
__dma_fence_unwrap_array(struct dma_fence_unwrap * cursor)
{
cursor->array = dma_fence_chain_contained(cursor->chain);
cursor->index = 0;
return dma_fence_array_first(cursor->array);
}
/**
* dma_fence_unwrap_first - return the first fence from fence containers
* @head: the entrypoint into the containers
* @cursor: current position inside the containers
*
* Unwraps potential dma_fence_chain/dma_fence_array containers and return the
* first fence.
*/
static inline struct dma_fence *
dma_fence_unwrap_first(struct dma_fence *head, struct dma_fence_unwrap *cursor)
{
cursor->chain = dma_fence_get(head);
return __dma_fence_unwrap_array(cursor);
}
/**
* dma_fence_unwrap_next - return the next fence from a fence containers
* @cursor: current position inside the containers
*
* Continue unwrapping the dma_fence_chain/dma_fence_array containers and return
* the next fence from them.
*/
static inline struct dma_fence *
dma_fence_unwrap_next(struct dma_fence_unwrap *cursor)
{
struct dma_fence *tmp;
++cursor->index;
tmp = dma_fence_array_next(cursor->array, cursor->index);
if (tmp)
return tmp;
cursor->chain = dma_fence_chain_walk(cursor->chain);
return __dma_fence_unwrap_array(cursor);
}
struct dma_fence *dma_fence_unwrap_first(struct dma_fence *head,
struct dma_fence_unwrap *cursor);
struct dma_fence *dma_fence_unwrap_next(struct dma_fence_unwrap *cursor);
/**
* dma_fence_unwrap_for_each - iterate over all fences in containers
......
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