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linux-sg2042
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x86: move dma_unmap_sg to common header 

i386 gets an empty function.

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 18:36:24 -03:00 committed by Ingo Molnar
parent 16a3ce9bae
commit 72c784f82c
4 changed files with 10 additions and 16 deletions
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1
arch/x86/kernel/pci-base_32.c
View File

@ -34,6 +34,7 @@ static const struct dma_mapping_ops pci32_dma_ops = {
.map_single = pci32_map_single,
.unmap_single = NULL,
.map_sg = pci32_dma_map_sg,
.unmap_sg = NULL,
};
const struct dma_mapping_ops *dma_ops = &pci32_dma_ops;

9
include/asm-x86/dma-mapping.h
View File

@ -82,4 +82,13 @@ dma_map_sg(struct device *hwdev, struct scatterlist *sg,
BUG_ON(!valid_dma_direction(direction));
return dma_ops->map_sg(hwdev, sg, nents, direction);
}
static inline void
dma_unmap_sg(struct device *hwdev, struct scatterlist *sg, int nents,
int direction)
{
BUG_ON(!valid_dma_direction(direction));
if (dma_ops->unmap_sg)
dma_ops->unmap_sg(hwdev, sg, nents, direction);
}
#endif

8
include/asm-x86/dma-mapping_32.h
View File

@ -32,14 +32,6 @@ dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
BUG_ON(!valid_dma_direction(direction));
}
static inline void
dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
enum dma_data_direction direction)
{
BUG_ON(!valid_dma_direction(direction));
}
static inline void
dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size,
enum dma_data_direction direction)

8
include/asm-x86/dma-mapping_64.h
View File

@ -96,14 +96,6 @@ dma_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg,
flush_write_buffers();
}
static inline void
dma_unmap_sg(struct device *hwdev, struct scatterlist *sg, int nents,
int direction)
{
BUG_ON(!valid_dma_direction(direction));
dma_ops->unmap_sg(hwdev, sg, nents, direction);
}
extern int dma_supported(struct device *hwdev, u64 mask);
/* same for gart, swiotlb, and nommu */