1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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 |
34 | |