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: Benjamin Herrenschmidt <[EMAIL PROTECTED]>
---
arch/powerpc/kernel/dma.c | 7 ++++++-
arch/powerpc/lib/dma-noncoherent.c | 2 +-
2 files changed, 7 insertions(+), 2 deletions(-)
--- linux-work.orig/arch/powerpc/kernel/dma.c 2008-10-10 10:51:22.000000000
+1100
+++ linux-work/arch/powerpc/kernel/dma.c 2008-10-10 10:51:57.000000000
+1100
@@ -30,8 +30,13 @@ static unsigned long get_dma_direct_offs
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;
Index: linux-work/arch/powerpc/lib/dma-noncoherent.c
===================================================================
--- linux-work.orig/arch/powerpc/lib/dma-noncoherent.c 2008-10-10
10:52:17.000000000 +1100
+++ linux-work/arch/powerpc/lib/dma-noncoherent.c 2008-10-10
10:52:21.000000000 +1100
@@ -203,7 +203,7 @@ __dma_alloc_coherent(size_t size, dma_ad
/*
* Set the "dma handle"
*/
- *handle = page_to_bus(page);
+ *handle = page_to_phys(page);
do {
BUG_ON(!pte_none(*pte));
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