1 files changed, 30 insertions, 20 deletions

diff --git a/include/asm-powerpc/iommu.h b/include/asm-powerpc/iommu.h
index a5e98641a2ae..f85dbd305558 100644
--- a/include/asm-powerpc/iommu.h
+++ b/include/asm-powerpc/iommu.h
@@ -22,17 +22,35 @@
 #define _ASM_IOMMU_H
 #ifdef __KERNEL__
 
-#include <asm/types.h>
+#include <linux/compiler.h>
 #include <linux/spinlock.h>
 #include <linux/device.h>
 #include <linux/dma-mapping.h>
+#include <asm/types.h>
+#include <asm/bitops.h>
+
+#define IOMMU_PAGE_SHIFT      12
+#define IOMMU_PAGE_SIZE       (ASM_CONST(1) << IOMMU_PAGE_SHIFT)
+#define IOMMU_PAGE_MASK       (~((1 << IOMMU_PAGE_SHIFT) - 1))
+#define IOMMU_PAGE_ALIGN(addr) _ALIGN_UP(addr, IOMMU_PAGE_SIZE)
+
+/* Boot time flags */
+extern int iommu_is_off;
+extern int iommu_force_on;
+
+/* Pure 2^n version of get_order */
+static __inline__ __attribute_const__ int get_iommu_order(unsigned long size)
+{
+        return __ilog2((size - 1) >> IOMMU_PAGE_SHIFT) + 1;
+}
+
 
 /*
  * IOMAP_MAX_ORDER defines the largest contiguous block
  * of dma space we can get.  IOMAP_MAX_ORDER = 13
  * allows up to 2**12 pages (4096 * 4096) = 16 MB
  */
-#define IOMAP_MAX_ORDER 13
+#define IOMAP_MAX_ORDER         13
 
 struct iommu_table {
         unsigned long  it_busno;     /* Bus number this table belongs to */
@@ -52,39 +70,31 @@ struct iommu_table {
 struct scatterlist;
 struct device_node;
 
-#ifdef CONFIG_PPC_MULTIPLATFORM
-
-/* Walks all buses and creates iommu tables */
-extern void iommu_setup_pSeries(void);
-extern void iommu_setup_dart(void);
-
 /* Frees table for an individual device node */
 extern void iommu_free_table(struct device_node *dn);
 
-#endif /* CONFIG_PPC_MULTIPLATFORM */
-
 /* Initializes an iommu_table based in values set in the passed-in
  * structure
  */
 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);