lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

[POWERPC] Add an optional offset to direct DMA on 64 bits

Browse Source 
This patch adds an optional global offset that can be added to DMA addresses
when using the direct DMA operations.

That brings it a step closer to the 32 bits direct DMA operations, and makes
it useable on Cell when the MMU is disabled and we are using a spider
southbridge.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Benjamin Herrenschmidt
2006-11-11 17:25:14 +11:00
committed by Paul Mackerras
parent 3bc0f40c28
commit 92b20c40dc
2 changed files with 10 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
include/asm-powerpc/dma-mapping.h
View File

@ -187,6 +187,8 @@ static inline void dma_unmap_sg(struct device *dev, struct scatterlist *sg,
extern struct dma_mapping_ops dma_iommu_ops;
extern struct dma_mapping_ops dma_direct_ops;
extern unsigned long dma_direct_offset;
#else /* CONFIG_PPC64 */
#define dma_supported(dev, mask) (1)