powerpc: Change archdata dma_data to a union

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>

2 files changed, 4 insertions, 7 deletions

diff --git a/arch/powerpc/platforms/cell/beat_iommu.c b/arch/powerpc/platforms/cell/beat_iommu.c
index 93b0efddd658..39d361c5c6d2 100644
--- a/arch/powerpc/platforms/cell/beat_iommu.c
+++ b/arch/powerpc/platforms/cell/beat_iommu.c
@@ -77,7 +77,7 @@ static void __init celleb_init_direct_mapping(void)
 static void celleb_dma_dev_setup(struct device *dev)
 {
         dev->archdata.dma_ops = get_pci_dma_ops();
-        dev->archdata.dma_data = (void *)celleb_dma_direct_offset;
+        set_dma_offset(dev, celleb_dma_direct_offset);
 }
 
 static void celleb_pci_dma_dev_setup(struct pci_dev *pdev)
diff --git a/arch/powerpc/platforms/cell/iommu.c b/arch/powerpc/platforms/cell/iommu.c
index 416db17eb18f..ca5bfdfe47f2 100644
--- a/arch/powerpc/platforms/cell/iommu.c
+++ b/arch/powerpc/platforms/cell/iommu.c
@@ -657,15 +657,13 @@ static void cell_dma_dev_setup_fixed(struct device *dev);
 
 static void cell_dma_dev_setup(struct device *dev)
 {
-        struct dev_archdata *archdata = &dev->archdata;
-
         /* Order is important here, these are not mutually exclusive */
         if (get_dma_ops(dev) == &dma_iommu_fixed_ops)
                 cell_dma_dev_setup_fixed(dev);
         else if (get_pci_dma_ops() == &dma_iommu_ops)
-                archdata->dma_data = cell_get_iommu_table(dev);
+                set_iommu_table_base(dev, cell_get_iommu_table(dev));
         else if (get_pci_dma_ops() == &dma_direct_ops)
-                archdata->dma_data = (void *)cell_dma_direct_offset;
+                set_dma_offset(dev, cell_dma_direct_offset);
         else
                 BUG();
 }
@@ -973,11 +971,10 @@ static int dma_set_mask_and_switch(struct device *dev, u64 dma_mask)
 
 static void cell_dma_dev_setup_fixed(struct device *dev)
 {
-        struct dev_archdata *archdata = &dev->archdata;
         u64 addr;
 
         addr = cell_iommu_get_fixed_address(dev) + dma_iommu_fixed_base;
-        archdata->dma_data = (void *)addr;
+        set_dma_offset(dev, addr);
 
         dev_dbg(dev, "iommu: fixed addr = %llx\n", addr);
 }