#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);
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);
}
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
{
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);
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);
+ BUG_ON(!valid_dma_direction(direction));
return page_to_phys(page) + offset;
}
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));
}
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
{
/* 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