powerpc: Fix DMA offset for non-coherent DMA

After Becky's work we can almost have different DMA offsets
between on-chip devices and PCI. Almost because there's a
problem with the non-coherent DMA code that basically ignores
the programmed offset to use the global one for everything.
This fixes it.
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent 1263965f
......@@ -30,11 +30,15 @@ static unsigned long get_dma_direct_offset(struct device *dev)
void *dma_direct_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flag)
{
void *ret;
#ifdef CONFIG_NOT_COHERENT_CACHE
return __dma_alloc_coherent(size, dma_handle, flag);
ret = __dma_alloc_coherent(size, dma_handle, flag);
if (ret == NULL)
return NULL;
*dma_handle += get_dma_direct_offset(dev);
return ret;
#else
struct page *page;
void *ret;
int node = dev_to_node(dev);
/* ignore region specifiers */
......
......@@ -203,7 +203,7 @@ __dma_alloc_coherent(size_t size, dma_addr_t *handle, gfp_t gfp)
/*
* Set the "dma handle"
*/
*handle = page_to_bus(page);
*handle = page_to_phys(page);
do {
BUG_ON(!pte_none(*pte));
......
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