Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

[linux-2.6-microblaze.git] / include / linux / dma-map-ops.h

diff --git a/include/linux/dma-map-ops.h b/include/linux/dma-map-ops.h
index a5f89fc..70fcd0f 100644 (file)
--- 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);