X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Flinux%2Fdma-mapping.h;h=806c305332c1c5c05102d9fc5d4537b49be5f4e7;hb=c7b5ebbddf7bcd3651947760f423e3783bbe6573;hp=43f6c726cd2cf2ee410090b1196f942aefa5a80f;hpb=9bf4aaab3e101692164d49b7ca357651eb691cb6;p=linux-2.6.git

diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index 43f6c726c..806c30533 100644
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -1,6 +1,9 @@
 #ifndef _ASM_LINUX_DMA_MAPPING_H
 #define _ASM_LINUX_DMA_MAPPING_H
 
+#include <linux/device.h>
+#include <linux/err.h>
+
 /* These definitions mirror those in pci.h, so they can be used
  * interchangeably with their PCI_ counterparts */
 enum dma_data_direction {
@@ -21,6 +24,33 @@ enum dma_data_direction {
 
 extern u64 dma_get_required_mask(struct device *dev);
 
+/* flags for the coherent memory api */
+#define	DMA_MEMORY_MAP			0x01
+#define DMA_MEMORY_IO			0x02
+#define DMA_MEMORY_INCLUDES_CHILDREN	0x04
+#define DMA_MEMORY_EXCLUSIVE		0x08
+
+#ifndef ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY
+static inline int
+dma_declare_coherent_memory(struct device *dev, dma_addr_t bus_addr,
+			    dma_addr_t device_addr, size_t size, int flags)
+{
+	return 0;
+}
+
+static inline void
+dma_release_declared_memory(struct device *dev)
+{
+}
+
+static inline void *
+dma_mark_declared_memory_occupied(struct device *dev,
+				  dma_addr_t device_addr, size_t size)
+{
+	return ERR_PTR(-EBUSY);
+}
+#endif
+
 #endif