[POWERPC] Refactor 64 bits DMA operations

This patch completely refactors DMA operations for 64 bits powerpc. 32 bits
is untouched for now.

We use the new dev_archdata structure to add the dma operations pointer
and associated data to struct device. While at it, we also add the OF node
pointer and numa node. In the future, we might want to look into merging
that with pci_dn as well.

The old vio, pci-iommu and pci-direct DMA ops are gone. They are now replaced
by a set of generic iommu and direct DMA ops (non PCI specific) that can be
used by bus types. The toplevel implementation is now inline.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 10 insertions, 10 deletions

diff --git a/include/asm-powerpc/iommu.h b/include/asm-powerpc/iommu.h
index 19e6f7e0a60..19403183dbb 100644
--- a/include/asm-powerpc/iommu.h
+++ b/include/asm-powerpc/iommu.h
@@ -79,22 +79,22 @@ extern void iommu_free_table(struct device_node *dn);
 extern struct iommu_table *iommu_init_table(struct iommu_table * tbl,
 					    int nid);
 
-extern int iommu_map_sg(struct device *dev, struct iommu_table *tbl,
-		struct scatterlist *sglist, int nelems, unsigned long mask,
-		enum dma_data_direction direction);
+extern int iommu_map_sg(struct iommu_table *tbl, struct scatterlist *sglist,
+			int nelems, unsigned long mask,
+			enum dma_data_direction direction);
 extern void iommu_unmap_sg(struct iommu_table *tbl, struct scatterlist *sglist,
-		int nelems, enum dma_data_direction direction);
+			   int nelems, enum dma_data_direction direction);
 
 extern void *iommu_alloc_coherent(struct iommu_table *tbl, size_t size,
-		dma_addr_t *dma_handle, unsigned long mask,
-		gfp_t flag, int node);
+				  dma_addr_t *dma_handle, unsigned long mask,
+				  gfp_t flag, int node);
 extern void iommu_free_coherent(struct iommu_table *tbl, size_t size,
-		void *vaddr, dma_addr_t dma_handle);
+				void *vaddr, dma_addr_t dma_handle);
 extern dma_addr_t iommu_map_single(struct iommu_table *tbl, void *vaddr,
-		size_t size, unsigned long mask,
-		enum dma_data_direction direction);
+				   size_t size, unsigned long mask,
+				   enum dma_data_direction direction);
 extern void iommu_unmap_single(struct iommu_table *tbl, dma_addr_t dma_handle,
-		size_t size, enum dma_data_direction direction);
+			       size_t size, enum dma_data_direction direction);
 
 extern void iommu_init_early_pSeries(void);
 extern void iommu_init_early_iSeries(void);