| /* 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 |
