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author | Jon Mason <jdmason@us.ibm.com> | 2006-06-26 13:58:08 +0200 |
---|---|---|
committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-26 19:48:18 +0200 |
commit | a3c042a0f022dade8e02bf6c9be5d2379d7e133c (patch) | |
tree | 0f690d13444c7c77c90da64ea9fb2373a21f7a4f /include/asm-x86_64/dma-mapping.h | |
parent | [PATCH] x86_64: Calgary IOMMU - introduce iommu_detected (diff) | |
download | linux-a3c042a0f022dade8e02bf6c9be5d2379d7e133c.tar.xz linux-a3c042a0f022dade8e02bf6c9be5d2379d7e133c.zip |
[PATCH] x86_64: Calgary IOMMU - move valid_dma_direction into the callers
Based on Andi Kleen's comments on the original Calgary patch, move
valid_dma_direction into the calling functions.
Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com>
Signed-off-by: Jon Mason <jdmason@us.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to '')
-rw-r--r-- | include/asm-x86_64/dma-mapping.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/include/asm-x86_64/dma-mapping.h b/include/asm-x86_64/dma-mapping.h index 498f66df36b9..b6da83dcc7a6 100644 --- a/include/asm-x86_64/dma-mapping.h +++ b/include/asm-x86_64/dma-mapping.h @@ -55,6 +55,13 @@ extern dma_addr_t bad_dma_address; extern struct dma_mapping_ops* dma_ops; extern int iommu_merge; +static inline int valid_dma_direction(int dma_direction) +{ + return ((dma_direction == DMA_BIDIRECTIONAL) || + (dma_direction == DMA_TO_DEVICE) || + (dma_direction == DMA_FROM_DEVICE)); +} + static inline int dma_mapping_error(dma_addr_t dma_addr) { if (dma_ops->mapping_error) @@ -72,6 +79,7 @@ static inline dma_addr_t dma_map_single(struct device *hwdev, void *ptr, size_t size, int direction) { + BUG_ON(!valid_dma_direction(direction)); return dma_ops->map_single(hwdev, ptr, size, direction); } @@ -79,6 +87,7 @@ static inline void dma_unmap_single(struct device *dev, dma_addr_t addr,size_t size, int direction) { + BUG_ON(!valid_dma_direction(direction)); dma_ops->unmap_single(dev, addr, size, direction); } @@ -91,6 +100,7 @@ static inline void dma_sync_single_for_cpu(struct device *hwdev, dma_addr_t dma_handle, size_t size, int direction) { + BUG_ON(!valid_dma_direction(direction)); if (dma_ops->sync_single_for_cpu) dma_ops->sync_single_for_cpu(hwdev, dma_handle, size, direction); @@ -101,6 +111,7 @@ static inline void dma_sync_single_for_device(struct device *hwdev, dma_addr_t dma_handle, size_t size, int direction) { + BUG_ON(!valid_dma_direction(direction)); if (dma_ops->sync_single_for_device) dma_ops->sync_single_for_device(hwdev, dma_handle, size, direction); @@ -111,6 +122,7 @@ static inline void dma_sync_single_range_for_cpu(struct device *hwdev, dma_addr_t dma_handle, unsigned long offset, size_t size, int direction) { + BUG_ON(!valid_dma_direction(direction)); if (dma_ops->sync_single_range_for_cpu) { dma_ops->sync_single_range_for_cpu(hwdev, dma_handle, offset, size, direction); } @@ -122,6 +134,7 @@ static inline void dma_sync_single_range_for_device(struct device *hwdev, dma_addr_t dma_handle, unsigned long offset, size_t size, int direction) { + BUG_ON(!valid_dma_direction(direction)); if (dma_ops->sync_single_range_for_device) dma_ops->sync_single_range_for_device(hwdev, dma_handle, offset, size, direction); @@ -133,6 +146,7 @@ static inline void dma_sync_sg_for_cpu(struct device *hwdev, struct scatterlist *sg, int nelems, int direction) { + BUG_ON(!valid_dma_direction(direction)); if (dma_ops->sync_sg_for_cpu) dma_ops->sync_sg_for_cpu(hwdev, sg, nelems, direction); flush_write_buffers(); @@ -142,6 +156,7 @@ static inline void dma_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg, int nelems, int direction) { + BUG_ON(!valid_dma_direction(direction)); if (dma_ops->sync_sg_for_device) { dma_ops->sync_sg_for_device(hwdev, sg, nelems, direction); } @@ -152,6 +167,7 @@ dma_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg, static inline int dma_map_sg(struct device *hwdev, struct scatterlist *sg, int nents, int direction) { + BUG_ON(!valid_dma_direction(direction)); return dma_ops->map_sg(hwdev, sg, nents, direction); } @@ -159,6 +175,7 @@ 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); } |