[linux-2.6-block.git] / arch / arm / mm / dma.h

/* 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
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
1234e3fd RK	2	#ifndef DMA_H
	3	#define DMA_H
	4
	5	#include <asm/glue-cache.h>
	6
	7	#ifndef MULTI_CACHE
	8	#define dmac_map_area __glue(_CACHE,_dma_map_area)
	9	#define dmac_unmap_area __glue(_CACHE,_dma_unmap_area)
	10
	11	/*
	12	* These are private to the dma-mapping API. Do not use directly.
	13	* Their sole purpose is to ensure that data held in the cache
	14	* is visible to DMA, or data written by DMA to system memory is
	15	* visible to the CPU.
	16	*/
	17	extern void dmac_map_area(const void *, size_t, int);
	18	extern void dmac_unmap_area(const void *, size_t, int);
	19
	20	#else
	21
	22	/*
	23	* These are private to the dma-mapping API. Do not use directly.
	24	* Their sole purpose is to ensure that data held in the cache
	25	* is visible to DMA, or data written by DMA to system memory is
	26	* visible to the CPU.
	27	*/
	28	#define dmac_map_area cpu_cache.dma_map_area
	29	#define dmac_unmap_area cpu_cache.dma_unmap_area
	30
	31	#endif
	32
	33	#endif