5c7dd7acc3
repo: https://github.com/T-head-Semi/linux commit: b1313fe517ca3703119dcc99ef3bbf75ab42bcfb Change-Id: I6cbb35294024ea3a66140e311f4bb705fd7fd626
34 lines
910 B
C
34 lines
910 B
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef DMA_H
|
|
#define DMA_H
|
|
|
|
#include <asm/glue-cache.h>
|
|
|
|
#ifndef MULTI_CACHE
|
|
#define dmac_map_area __glue(_CACHE,_dma_map_area)
|
|
#define dmac_unmap_area __glue(_CACHE,_dma_unmap_area)
|
|
|
|
/*
|
|
* These are private to the dma-mapping API. Do not use directly.
|
|
* Their sole purpose is to ensure that data held in the cache
|
|
* is visible to DMA, or data written by DMA to system memory is
|
|
* visible to the CPU.
|
|
*/
|
|
extern void dmac_map_area(const void *, size_t, int);
|
|
extern void dmac_unmap_area(const void *, size_t, int);
|
|
|
|
#else
|
|
|
|
/*
|
|
* These are private to the dma-mapping API. Do not use directly.
|
|
* Their sole purpose is to ensure that data held in the cache
|
|
* is visible to DMA, or data written by DMA to system memory is
|
|
* visible to the CPU.
|
|
*/
|
|
#define dmac_map_area cpu_cache.dma_map_area
|
|
#define dmac_unmap_area cpu_cache.dma_unmap_area
|
|
|
|
#endif
|
|
|
|
#endif
|