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powerpc: Change archdata dma_data to a union

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Sometimes this is used to hold a simple offset, and sometimes
it is used to hold a pointer.  This patch changes it to a union containing
void * and dma_addr_t.  get/set accessors are also provided, because it was
getting a bit ugly to get to the actual data.

Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Becky Bruce
2009-09-21 08:26:35 +00:00
committed by Benjamin Herrenschmidt
parent 1cebd7a0f6
commit 738ef42e32
12 changed files with 49 additions and 27 deletions
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10
arch/powerpc/include/asm/iommu.h
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@ -70,6 +70,16 @@ struct iommu_table {
struct scatterlist;
static inline void set_iommu_table_base(struct device *dev, void *base)
{
dev->archdata.dma_data.iommu_table_base = base;
}
static inline void *get_iommu_table_base(struct device *dev)
{
return dev->archdata.dma_data.iommu_table_base;
}
/* Frees table for an individual device node */
extern void iommu_free_table(struct iommu_table *tbl, const char *node_name);