X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Fasm-i386%2Fdma-mapping.h;h=183eebeebbdce7a3d1794e79c67862cf93e8f745;hb=refs%2Fheads%2Fvserver;hp=70f62048f04adc7d9643656d3093a0863a9d59da;hpb=5273a3df6485dc2ad6aa7ddd441b9a21970f003b;p=linux-2.6.git

diff --git a/include/asm-i386/dma-mapping.h b/include/asm-i386/dma-mapping.h
index 70f62048f..183eebeeb 100644
--- a/include/asm-i386/dma-mapping.h
+++ b/include/asm-i386/dma-mapping.h
@@ -1,13 +1,18 @@
 #ifndef _ASM_I386_DMA_MAPPING_H
 #define _ASM_I386_DMA_MAPPING_H
 
+#include <linux/mm.h>
+
 #include <asm/cache.h>
+#include <asm/io.h>
+#include <asm/scatterlist.h>
+#include <asm/bug.h>
 
 #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
 #define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
 
 void *dma_alloc_coherent(struct device *dev, size_t size,
-			   dma_addr_t *dma_handle, int flag);
+			   dma_addr_t *dma_handle, gfp_t flag);
 
 void dma_free_coherent(struct device *dev, size_t size,
 			 void *vaddr, dma_addr_t dma_handle);
@@ -16,7 +21,8 @@ static inline dma_addr_t
 dma_map_single(struct device *dev, void *ptr, size_t size,
 	       enum dma_data_direction direction)
 {
-	BUG_ON(direction == DMA_NONE);
+	BUG_ON(!valid_dma_direction(direction));
+	WARN_ON(size == 0);
 	flush_write_buffers();
 	return virt_to_phys(ptr);
 }
@@ -25,7 +31,7 @@ static inline void
 dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
 		 enum dma_data_direction direction)
 {
-	BUG_ON(direction == DMA_NONE);
+	BUG_ON(!valid_dma_direction(direction));
 }
 
 static inline int
@@ -34,7 +40,8 @@ dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
 {
 	int i;
 
-	BUG_ON(direction == DMA_NONE);
+	BUG_ON(!valid_dma_direction(direction));
+	WARN_ON(nents == 0 || sg[0].length == 0);
 
 	for (i = 0; i < nents; i++ ) {
 		BUG_ON(!sg[i].page);
@@ -50,15 +57,15 @@ static inline dma_addr_t
 dma_map_page(struct device *dev, struct page *page, unsigned long offset,
 	     size_t size, enum dma_data_direction direction)
 {
-	BUG_ON(direction == DMA_NONE);
-	return (dma_addr_t)(page_to_pfn(page)) * PAGE_SIZE + offset;
+	BUG_ON(!valid_dma_direction(direction));
+	return page_to_phys(page) + offset;
 }
 
 static inline void
 dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
 	       enum dma_data_direction direction)
 {
-	BUG_ON(direction == DMA_NONE);
+	BUG_ON(!valid_dma_direction(direction));
 }
 
 
@@ -66,7 +73,7 @@ static inline void
 dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
 	     enum dma_data_direction direction)
 {
-	BUG_ON(direction == DMA_NONE);
+	BUG_ON(!valid_dma_direction(direction));
 }
 
 static inline void
@@ -146,16 +153,28 @@ dma_get_cache_alignment(void)
 {
 	/* no easy way to get cache size on all x86, so return the
 	 * maximum possible, to be safe */
-	return (1 << L1_CACHE_SHIFT_MAX);
+	return (1 << INTERNODE_CACHE_SHIFT);
 }
 
-#define dma_is_consistent(d)	(1)
+#define dma_is_consistent(d, h)	(1)
 
 static inline void
-dma_cache_sync(void *vaddr, size_t size,
+dma_cache_sync(struct device *dev, void *vaddr, size_t size,
 	       enum dma_data_direction direction)
 {
 	flush_write_buffers();
 }
 
+#define ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY
+extern int
+dma_declare_coherent_memory(struct device *dev, dma_addr_t bus_addr,
+			    dma_addr_t device_addr, size_t size, int flags);
+
+extern void
+dma_release_declared_memory(struct device *dev);
+
+extern void *
+dma_mark_declared_memory_occupied(struct device *dev,
+				  dma_addr_t device_addr, size_t size);
+
 #endif