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x86: move dma_map_page and dma_unmap_page to common header 

They are similar enough to do this move.
the macro version is ugly, and we use inline functions instead.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Glauber Costa 2008-03-25 18:36:32 -03:00 committed by Ingo Molnar
parent 8d396ded71
commit 4d92fbf231
3 changed files with 14 additions and 19 deletions
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14
include/asm-x86/dma-mapping.h
View File

@ -169,4 +169,18 @@ dma_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg,
flush_write_buffers();
}
static inline dma_addr_t dma_map_page(struct device *dev, struct page *page,
size_t offset, size_t size,
int direction)
{
return dma_map_single(dev, page_address(page)+offset, size, direction);
}
static inline void dma_unmap_page(struct device *dev, dma_addr_t addr,
size_t size, int direction)
{
dma_unmap_single(dev, addr, size, direction);
}
#endif

15
include/asm-x86/dma-mapping_32.h
View File

@ -8,21 +8,6 @@
#include <asm/io.h>
#include <asm/bug.h>
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(!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(!valid_dma_direction(direction));
}
static inline int
dma_mapping_error(dma_addr_t dma_addr)
{

4
include/asm-x86/dma-mapping_64.h
View File

@ -12,10 +12,6 @@ static inline int dma_mapping_error(dma_addr_t dma_addr)
return (dma_addr == bad_dma_address);
}
#define dma_map_page(dev,page,offset,size,dir) \
dma_map_single((dev), page_address(page)+(offset), (size), (dir))
#define dma_unmap_page dma_unmap_single
extern int dma_supported(struct device *hwdev, u64 mask);
/* same for gart, swiotlb, and nommu */