diff options
Diffstat (limited to 'include/linux/dma-map-ops.h')
| -rw-r--r-- | include/linux/dma-map-ops.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/dma-map-ops.h b/include/linux/dma-map-ops.h index a5f89fc4d6df..70fcd0f610ea 100644 --- a/include/linux/dma-map-ops.h +++ b/include/linux/dma-map-ops.h @@ -226,6 +226,9 @@ struct page *dma_alloc_from_pool(struct device *dev, size_t size, bool (*phys_addr_ok)(struct device *, phys_addr_t, size_t)); bool dma_free_from_pool(struct device *dev, void *start, size_t size); +int dma_direct_set_offset(struct device *dev, phys_addr_t cpu_start, + dma_addr_t dma_start, u64 size); + #ifdef CONFIG_ARCH_HAS_DMA_COHERENCE_H #include <asm/dma-coherence.h> #elif defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_DEVICE) || \ @@ -314,6 +317,20 @@ static inline void arch_dma_mark_clean(phys_addr_t paddr, size_t size) void *arch_dma_set_uncached(void *addr, size_t size); void arch_dma_clear_uncached(void *addr, size_t size); +#ifdef CONFIG_ARCH_HAS_DMA_MAP_DIRECT +bool arch_dma_map_page_direct(struct device *dev, phys_addr_t addr); +bool arch_dma_unmap_page_direct(struct device *dev, dma_addr_t dma_handle); +bool arch_dma_map_sg_direct(struct device *dev, struct scatterlist *sg, + int nents); +bool arch_dma_unmap_sg_direct(struct device *dev, struct scatterlist *sg, + int nents); +#else +#define arch_dma_map_page_direct(d, a) (false) +#define arch_dma_unmap_page_direct(d, a) (false) +#define arch_dma_map_sg_direct(d, s, n) (false) +#define arch_dma_unmap_sg_direct(d, s, n) (false) +#endif + #ifdef CONFIG_ARCH_HAS_SETUP_DMA_OPS void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size, const struct iommu_ops *iommu, bool coherent); |