This will allow us to implement cache maintenance in a platform agnostic way.
Signed-off-by: Lucas Stach <[email protected]> --- include/dma-dir.h | 6 ++++++ include/dma.h | 11 +++++++++++ 2 files changed, 17 insertions(+) create mode 100644 include/dma-dir.h diff --git a/include/dma-dir.h b/include/dma-dir.h new file mode 100644 index 0000000..ba107f1 --- /dev/null +++ b/include/dma-dir.h @@ -0,0 +1,6 @@ +enum dma_data_direction { + DMA_BIDIRECTIONAL = 0, + DMA_TO_DEVICE = 1, + DMA_FROM_DEVICE = 2, + DMA_NONE = 3, +}; diff --git a/include/dma.h b/include/dma.h index 899f831..4274520 100644 --- a/include/dma.h +++ b/include/dma.h @@ -11,6 +11,7 @@ #include <malloc.h> #include <xfuncs.h> +#include <dma-dir.h> #include <asm/dma.h> #ifndef dma_alloc @@ -27,4 +28,14 @@ static inline void dma_free(void *mem) } #endif +/* streaming DMA - implement the below calls to support HAS_DMA */ +void dma_sync_single_for_cpu(unsigned long address, size_t size, + enum dma_data_direction dir); + +void dma_sync_single_for_device(unsigned long address, size_t size, + enum dma_data_direction dir); + +void *dma_alloc_coherent(size_t size); +void dma_free_coherent(void *mem, size_t size); + #endif /* __DMA_H */ -- 2.1.0 _______________________________________________ barebox mailing list [email protected] http://lists.infradead.org/mailman/listinfo/barebox
