x86: move dma_unmap_single to common header

[karo-tx-linux.git] / include / asm-x86 / dma-mapping.h

diff --git a/include/asm-x86/dma-mapping.h b/include/asm-x86/dma-mapping.h
index 58f790f4df5253fe80c3a9ed34b2b1d4bb91b4ef..bb0378f2b933c4adcb7662968e9a2e5f4f63764c 100644 (file)
--- a/include/asm-x86/dma-mapping.h
+++ b/include/asm-x86/dma-mapping.h
@@ -1,5 +1,79 @@
+#ifndef _ASM_DMA_MAPPING_H_
+#define _ASM_DMA_MAPPING_H_
+
+/*
+ * IOMMU interface. See Documentation/DMA-mapping.txt and DMA-API.txt for
+ * documentation.
+ */
+
+#include <linux/scatterlist.h>
+#include <asm/io.h>
+#include <asm/swiotlb.h>
+
+struct dma_mapping_ops {
+       int             (*mapping_error)(dma_addr_t dma_addr);
+       void*           (*alloc_coherent)(struct device *dev, size_t size,
+                               dma_addr_t *dma_handle, gfp_t gfp);
+       void            (*free_coherent)(struct device *dev, size_t size,
+                               void *vaddr, dma_addr_t dma_handle);
+       dma_addr_t      (*map_single)(struct device *hwdev, void *ptr,
+                               size_t size, int direction);
+       /* like map_single, but doesn't check the device mask */
+       dma_addr_t      (*map_simple)(struct device *hwdev, char *ptr,
+                               size_t size, int direction);
+       void            (*unmap_single)(struct device *dev, dma_addr_t addr,
+                               size_t size, int direction);
+       void            (*sync_single_for_cpu)(struct device *hwdev,
+                               dma_addr_t dma_handle, size_t size,
+                               int direction);
+       void            (*sync_single_for_device)(struct device *hwdev,
+                               dma_addr_t dma_handle, size_t size,
+                               int direction);
+       void            (*sync_single_range_for_cpu)(struct device *hwdev,
+                               dma_addr_t dma_handle, unsigned long offset,
+                               size_t size, int direction);
+       void            (*sync_single_range_for_device)(struct device *hwdev,
+                               dma_addr_t dma_handle, unsigned long offset,
+                               size_t size, int direction);
+       void            (*sync_sg_for_cpu)(struct device *hwdev,
+                               struct scatterlist *sg, int nelems,
+                               int direction);
+       void            (*sync_sg_for_device)(struct device *hwdev,
+                               struct scatterlist *sg, int nelems,
+                               int direction);
+       int             (*map_sg)(struct device *hwdev, struct scatterlist *sg,
+                               int nents, int direction);
+       void            (*unmap_sg)(struct device *hwdev,
+                               struct scatterlist *sg, int nents,
+                               int direction);
+       int             (*dma_supported)(struct device *hwdev, u64 mask);
+       int             is_phys;
+};
+
+extern const struct dma_mapping_ops *dma_ops;
+
 #ifdef CONFIG_X86_32
 # include "dma-mapping_32.h"
 #else
 # include "dma-mapping_64.h"
 #endif
+
+static inline dma_addr_t
+dma_map_single(struct device *hwdev, void *ptr, size_t size,
+              int direction)
+{
+       BUG_ON(!valid_dma_direction(direction));
+       return dma_ops->map_single(hwdev, ptr, size, direction);
+}
+
+static inline void
+dma_unmap_single(struct device *dev, dma_addr_t addr, size_t size,
+                int direction)
+{
+       BUG_ON(!valid_dma_direction(direction));
+       if (dma_ops->unmap_single)
+               dma_ops->unmap_single(dev, addr, size, direction);
+}
+
+
+#endif