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authorBecky Bruce <beckyb@kernel.crashing.org>2009-09-21 10:26:34 +0200
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2009-09-24 07:31:43 +0200
commit1cebd7a0f62804ca24f7b7b35e8105000b9e879a (patch)
tree57f04a5882d595cab859e2820d998bcde4660074 /arch/powerpc/kernel/dma.c
parentpowerpc/mm: Remove duplicated #include (diff)
downloadlinux-1cebd7a0f62804ca24f7b7b35e8105000b9e879a.tar.xz
linux-1cebd7a0f62804ca24f7b7b35e8105000b9e879a.zip
powerpc: Rename get_dma_direct_offset get_dma_offset
The former is no longer really accurate with the swiotlb case now a possibility. I also move it into dma-mapping.h - it no longer needs to be in dma.c, and there are about to be some more accessors that should all end up in the same place. A comment is added to indicate that this function is not used in configs where there is no simple dma offset, such as the iommu case. Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/dma.c')
-rw-r--r--arch/powerpc/kernel/dma.c15
1 files changed, 4 insertions, 11 deletions
diff --git a/arch/powerpc/kernel/dma.c b/arch/powerpc/kernel/dma.c
index 21b784d7e7d0..6215062caf8c 100644
--- a/arch/powerpc/kernel/dma.c
+++ b/arch/powerpc/kernel/dma.c
@@ -21,13 +21,6 @@
* default the offset is PCI_DRAM_OFFSET.
*/
-unsigned long get_dma_direct_offset(struct device *dev)
-{
- if (dev)
- return (unsigned long)dev->archdata.dma_data;
-
- return PCI_DRAM_OFFSET;
-}
void *dma_direct_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flag)
@@ -37,7 +30,7 @@ void *dma_direct_alloc_coherent(struct device *dev, size_t size,
ret = __dma_alloc_coherent(dev, size, dma_handle, flag);
if (ret == NULL)
return NULL;
- *dma_handle += get_dma_direct_offset(dev);
+ *dma_handle += get_dma_offset(dev);
return ret;
#else
struct page *page;
@@ -51,7 +44,7 @@ void *dma_direct_alloc_coherent(struct device *dev, size_t size,
return NULL;
ret = page_address(page);
memset(ret, 0, size);
- *dma_handle = virt_to_abs(ret) + get_dma_direct_offset(dev);
+ *dma_handle = virt_to_abs(ret) + get_dma_offset(dev);
return ret;
#endif
@@ -75,7 +68,7 @@ static int dma_direct_map_sg(struct device *dev, struct scatterlist *sgl,
int i;
for_each_sg(sgl, sg, nents, i) {
- sg->dma_address = sg_phys(sg) + get_dma_direct_offset(dev);
+ sg->dma_address = sg_phys(sg) + get_dma_offset(dev);
sg->dma_length = sg->length;
__dma_sync_page(sg_page(sg), sg->offset, sg->length, direction);
}
@@ -110,7 +103,7 @@ static inline dma_addr_t dma_direct_map_page(struct device *dev,
{
BUG_ON(dir == DMA_NONE);
__dma_sync_page(page, offset, size, dir);
- return page_to_phys(page) + offset + get_dma_direct_offset(dev);
+ return page_to_phys(page) + offset + get_dma_offset(dev);
}
static inline void dma_direct_unmap_page(struct device *dev,