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Diffstat (limited to 'arch')
-rw-r--r--arch/powerpc/kernel/dma_64.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/arch/powerpc/kernel/dma_64.c b/arch/powerpc/kernel/dma_64.c
index 14206e3f081..a2d076d005c 100644
--- a/arch/powerpc/kernel/dma_64.c
+++ b/arch/powerpc/kernel/dma_64.c
@@ -117,6 +117,11 @@ EXPORT_SYMBOL(dma_iommu_ops);
*/
unsigned long dma_direct_offset;
+static unsigned long get_dma_direct_offset(struct device *dev)
+{
+ return (unsigned long)dev->archdata.dma_data;
+}
+
static void *dma_direct_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flag)
{
@@ -130,7 +135,7 @@ static 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) | dma_direct_offset;
+ *dma_handle = virt_to_abs(ret) + get_dma_direct_offset(dev);
return ret;
}
@@ -145,7 +150,7 @@ static dma_addr_t dma_direct_map_single(struct device *dev, void *ptr,
size_t size,
enum dma_data_direction direction)
{
- return virt_to_abs(ptr) | dma_direct_offset;
+ return virt_to_abs(ptr) + get_dma_direct_offset(dev);
}
static void dma_direct_unmap_single(struct device *dev, dma_addr_t dma_addr,
@@ -161,7 +166,7 @@ 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) | dma_direct_offset;
+ sg->dma_address = sg_phys(sg) + get_dma_direct_offset(dev);
sg->dma_length = sg->length;
}