Index: upstream/arch/powerpc/include/asm/iommu.h
===================================================================
--- upstream.orig/arch/powerpc/include/asm/iommu.h
+++ upstream/arch/powerpc/include/asm/iommu.h
@@ -92,13 +92,14 @@ extern void *iommu_alloc_coherent(struct
 				  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);
-extern dma_addr_t iommu_map_single(struct device *dev, struct iommu_table *tbl,
-				   void *vaddr, size_t size, unsigned long mask,
-				   enum dma_data_direction direction,
-				   struct dma_attrs *attrs);
-extern void iommu_unmap_single(struct iommu_table *tbl, dma_addr_t dma_handle,
-			       size_t size, enum dma_data_direction direction,
-			       struct dma_attrs *attrs);
+extern dma_addr_t iommu_map_page(struct device *dev, struct iommu_table *tbl,
+				 struct page *page, unsigned long offset,
+				 size_t size, unsigned long mask,
+				 enum dma_data_direction direction,
+				 struct dma_attrs *attrs);
+extern void iommu_unmap_page(struct iommu_table *tbl, dma_addr_t dma_handle,
+			     size_t size, enum dma_data_direction direction,
+			     struct dma_attrs *attrs);
 
 extern void iommu_init_early_pSeries(void);
 extern void iommu_init_early_iSeries(void);
Index: upstream/arch/powerpc/kernel/dma-iommu.c
===================================================================
--- upstream.orig/arch/powerpc/kernel/dma-iommu.c
+++ upstream/arch/powerpc/kernel/dma-iommu.c
@@ -30,28 +30,26 @@ static void dma_iommu_free_coherent(stru
 }
 
 /* Creates TCEs for a user provided buffer.  The user buffer must be
- * contiguous real kernel storage (not vmalloc).  The address of the buffer
- * passed here is the kernel (virtual) address of the buffer.  The buffer
- * need not be page aligned, the dma_addr_t returned will point to the same
- * byte within the page as vaddr.
+ * contiguous real kernel storage (not vmalloc).  The address passed here
+ * comprises a page address and offset into that page. The dma_addr_t
+ * returned will point to the same byte within the page as was passed in.
  */
-static dma_addr_t dma_iommu_map_single(struct device *dev, void *vaddr,
-				       size_t size,
-				       enum dma_data_direction direction,
-				       struct dma_attrs *attrs)
+static dma_addr_t dma_iommu_map_page(struct device *dev, struct page *page,
+				     unsigned long offset, size_t size,
+				     enum dma_data_direction direction,
+				     struct dma_attrs *attrs)
 {
-	return iommu_map_single(dev, dev->archdata.dma_data, vaddr, size,
-				device_to_mask(dev), direction, attrs);
+	return iommu_map_page(dev, dev->archdata.dma_data, page, offset, size,
+			      device_to_mask(dev), direction, attrs);
 }
 
 
-static void dma_iommu_unmap_single(struct device *dev, dma_addr_t dma_handle,
-				   size_t size,
-				   enum dma_data_direction direction,
-				   struct dma_attrs *attrs)
+static void dma_iommu_unmap_page(struct device *dev, dma_addr_t dma_handle,
+				 size_t size, enum dma_data_direction direction,
+				 struct dma_attrs *attrs)
 {
-	iommu_unmap_single(dev->archdata.dma_data, dma_handle, size, direction,
-			   attrs);
+	iommu_unmap_page(dev->archdata.dma_data, dma_handle, size, direction,
+			 attrs);
 }
 
 
@@ -94,10 +92,10 @@ static int dma_iommu_dma_supported(struc
 struct dma_mapping_ops dma_iommu_ops = {
 	.alloc_coherent	= dma_iommu_alloc_coherent,
 	.free_coherent	= dma_iommu_free_coherent,
-	.map_single	= dma_iommu_map_single,
-	.unmap_single	= dma_iommu_unmap_single,
 	.map_sg		= dma_iommu_map_sg,
 	.unmap_sg	= dma_iommu_unmap_sg,
 	.dma_supported	= dma_iommu_dma_supported,
+	.map_page	= dma_iommu_map_page,
+	.unmap_page	= dma_iommu_unmap_page,
 };
 EXPORT_SYMBOL(dma_iommu_ops);
Index: upstream/arch/powerpc/kernel/ibmebus.c
===================================================================
--- upstream.orig/arch/powerpc/kernel/ibmebus.c
+++ upstream/arch/powerpc/kernel/ibmebus.c
@@ -79,20 +79,21 @@ static void ibmebus_free_coherent(struct
 	kfree(vaddr);
 }
 
-static dma_addr_t ibmebus_map_single(struct device *dev,
-				     void *ptr,
-				     size_t size,
-				     enum dma_data_direction direction,
-				     struct dma_attrs *attrs)
-{
-	return (dma_addr_t)(ptr);
+static dma_addr_t ibmebus_map_page(struct device *dev,
+				   struct page *page,
+				   unsigned long offset,
+				   size_t size,
+				   enum dma_data_direction direction,
+				   struct dma_attrs *attrs)
+{
+	return (dma_addr_t)(page_address(page) + offset);
 }
 
-static void ibmebus_unmap_single(struct device *dev,
-				 dma_addr_t dma_addr,
-				 size_t size,
-				 enum dma_data_direction direction,
-				 struct dma_attrs *attrs)
+static void ibmebus_unmap_page(struct device *dev,
+			       dma_addr_t dma_addr,
+			       size_t size,
+			       enum dma_data_direction direction,
+			       struct dma_attrs *attrs)
 {
 	return;
 }
@@ -129,11 +130,11 @@ static int ibmebus_dma_supported(struct 
 static struct dma_mapping_ops ibmebus_dma_ops = {
 	.alloc_coherent = ibmebus_alloc_coherent,
 	.free_coherent  = ibmebus_free_coherent,
-	.map_single     = ibmebus_map_single,
-	.unmap_single   = ibmebus_unmap_single,
 	.map_sg         = ibmebus_map_sg,
 	.unmap_sg       = ibmebus_unmap_sg,
 	.dma_supported  = ibmebus_dma_supported,
+	.map_page       = ibmebus_map_page,
+	.unmap_page     = ibmebus_unmap_page,
 };
 
 static int ibmebus_match_path(struct device *dev, void *data)
Index: upstream/arch/powerpc/kernel/iommu.c
===================================================================
--- upstream.orig/arch/powerpc/kernel/iommu.c
+++ upstream/arch/powerpc/kernel/iommu.c
@@ -564,21 +564,23 @@ void iommu_free_table(struct iommu_table
 }
 
 /* Creates TCEs for a user provided buffer.  The user buffer must be
- * contiguous real kernel storage (not vmalloc).  The address of the buffer
- * passed here is the kernel (virtual) address of the buffer.  The buffer
- * need not be page aligned, the dma_addr_t returned will point to the same
- * byte within the page as vaddr.
+ * contiguous real kernel storage (not vmalloc).  The address passed here
+ * comprises a page address and offset into that page. The dma_addr_t
+ * returned will point to the same byte within the page as was passed in.
  */
-dma_addr_t iommu_map_single(struct device *dev, struct iommu_table *tbl,
-			    void *vaddr, size_t size, unsigned long mask,
-		enum dma_data_direction direction, struct dma_attrs *attrs)
+dma_addr_t iommu_map_page(struct device *dev, struct iommu_table *tbl,
+			  struct page *page, unsigned long offset, size_t size,
+			  unsigned long mask, enum dma_data_direction direction,
+			  struct dma_attrs *attrs)
 {
 	dma_addr_t dma_handle = DMA_ERROR_CODE;
+	void *vaddr;
 	unsigned long uaddr;
 	unsigned int npages, align;
 
 	BUG_ON(direction == DMA_NONE);
 
+	vaddr = page_address(page) + offset;
 	uaddr = (unsigned long)vaddr;
 	npages = iommu_num_pages(uaddr, size, IOMMU_PAGE_SIZE);
 
@@ -604,9 +606,9 @@ dma_addr_t iommu_map_single(struct devic
 	return dma_handle;
 }
 
-void iommu_unmap_single(struct iommu_table *tbl, dma_addr_t dma_handle,
-		size_t size, enum dma_data_direction direction,
-		struct dma_attrs *attrs)
+void iommu_unmap_page(struct iommu_table *tbl, dma_addr_t dma_handle,
+		      size_t size, enum dma_data_direction direction,
+		      struct dma_attrs *attrs)
 {
 	unsigned int npages;
 
Index: upstream/arch/powerpc/kernel/vio.c
===================================================================
--- upstream.orig/arch/powerpc/kernel/vio.c
+++ upstream/arch/powerpc/kernel/vio.c
@@ -516,10 +516,10 @@ static void vio_dma_iommu_free_coherent(
 	vio_cmo_dealloc(viodev, roundup(size, IOMMU_PAGE_SIZE));
 }
 
-static dma_addr_t vio_dma_iommu_map_single(struct device *dev, void *vaddr,
-                                           size_t size,
-                                           enum dma_data_direction direction,
-                                           struct dma_attrs *attrs)
+static dma_addr_t vio_dma_iommu_map_page(struct device *dev, struct page *page,
+                                         unsigned long offset, size_t size,
+                                         enum dma_data_direction direction,
+                                         struct dma_attrs *attrs)
 {
 	struct vio_dev *viodev = to_vio_dev(dev);
 	dma_addr_t ret = DMA_ERROR_CODE;
@@ -529,7 +529,7 @@ static dma_addr_t vio_dma_iommu_map_sing
 		return ret;
 	}
 
-	ret = dma_iommu_ops.map_single(dev, vaddr, size, direction, attrs);
+	ret = dma_iommu_ops.map_page(dev, page, offset, size, direction, attrs);
 	if (unlikely(dma_mapping_error(dev, ret))) {
 		vio_cmo_dealloc(viodev, roundup(size, IOMMU_PAGE_SIZE));
 		atomic_inc(&viodev->cmo.allocs_failed);
@@ -538,14 +538,14 @@ static dma_addr_t vio_dma_iommu_map_sing
 	return ret;
 }
 
-static void vio_dma_iommu_unmap_single(struct device *dev,
-		dma_addr_t dma_handle, size_t size,
-		enum dma_data_direction direction,
-		struct dma_attrs *attrs)
+static void vio_dma_iommu_unmap_page(struct device *dev, dma_addr_t dma_handle,
+				     size_t size,
+				     enum dma_data_direction direction,
+				     struct dma_attrs *attrs)
 {
 	struct vio_dev *viodev = to_vio_dev(dev);
 
-	dma_iommu_ops.unmap_single(dev, dma_handle, size, direction, attrs);
+	dma_iommu_ops.unmap_page(dev, dma_handle, size, direction, attrs);
 
 	vio_cmo_dealloc(viodev, roundup(size, IOMMU_PAGE_SIZE));
 }
@@ -603,10 +603,11 @@ static void vio_dma_iommu_unmap_sg(struc
 struct dma_mapping_ops vio_dma_mapping_ops = {
 	.alloc_coherent = vio_dma_iommu_alloc_coherent,
 	.free_coherent  = vio_dma_iommu_free_coherent,
-	.map_single     = vio_dma_iommu_map_single,
-	.unmap_single   = vio_dma_iommu_unmap_single,
 	.map_sg         = vio_dma_iommu_map_sg,
 	.unmap_sg       = vio_dma_iommu_unmap_sg,
+	.map_page       = vio_dma_iommu_map_page,
+	.unmap_page     = vio_dma_iommu_unmap_page,
+
 };
 
 /**
Index: upstream/arch/powerpc/platforms/cell/iommu.c
===================================================================
--- upstream.orig/arch/powerpc/platforms/cell/iommu.c
+++ upstream/arch/powerpc/platforms/cell/iommu.c
@@ -593,31 +593,30 @@ static void dma_fixed_free_coherent(stru
 		dma_direct_ops.free_coherent(dev, size, vaddr, dma_handle);
 }
 
-static dma_addr_t dma_fixed_map_single(struct device *dev, void *ptr,
-				       size_t size,
-				       enum dma_data_direction direction,
-				       struct dma_attrs *attrs)
+static dma_addr_t dma_fixed_map_page(struct device *dev, struct page *page,
+				     unsigned long offset, size_t size,
+				     enum dma_data_direction direction,
+				     struct dma_attrs *attrs)
 {
 	if (iommu_fixed_is_weak == dma_get_attr(DMA_ATTR_WEAK_ORDERING, attrs))
-		return dma_direct_ops.map_single(dev, ptr, size, direction,
-						 attrs);
+		return dma_direct_ops.map_page(dev, page, offset, size,
+					       direction, attrs);
 	else
-		return iommu_map_single(dev, cell_get_iommu_table(dev), ptr,
-					size, device_to_mask(dev), direction,
-					attrs);
+		return iommu_map_page(dev, cell_get_iommu_table(dev), page,
+				      offset, size, device_to_mask(dev),
+				      direction, attrs);
 }
 
-static void dma_fixed_unmap_single(struct device *dev, dma_addr_t dma_addr,
-				   size_t size,
-				   enum dma_data_direction direction,
-				   struct dma_attrs *attrs)
+static void dma_fixed_unmap_page(struct device *dev, dma_addr_t dma_addr,
+				 size_t size, enum dma_data_direction direction,
+				 struct dma_attrs *attrs)
 {
 	if (iommu_fixed_is_weak == dma_get_attr(DMA_ATTR_WEAK_ORDERING, attrs))
-		dma_direct_ops.unmap_single(dev, dma_addr, size, direction,
-					    attrs);
+		dma_direct_ops.unmap_page(dev, dma_addr, size, direction,
+					  attrs);
 	else
-		iommu_unmap_single(cell_get_iommu_table(dev), dma_addr, size,
-				   direction, attrs);
+		iommu_unmap_page(cell_get_iommu_table(dev), dma_addr, size,
+				 direction, attrs);
 }
 
 static int dma_fixed_map_sg(struct device *dev, struct scatterlist *sg,
@@ -652,12 +651,12 @@ static int dma_set_mask_and_switch(struc
 struct dma_mapping_ops dma_iommu_fixed_ops = {
 	.alloc_coherent = dma_fixed_alloc_coherent,
 	.free_coherent  = dma_fixed_free_coherent,
-	.map_single     = dma_fixed_map_single,
-	.unmap_single   = dma_fixed_unmap_single,
 	.map_sg         = dma_fixed_map_sg,
 	.unmap_sg       = dma_fixed_unmap_sg,
 	.dma_supported  = dma_fixed_dma_supported,
 	.set_dma_mask   = dma_set_mask_and_switch,
+	.map_page       = dma_fixed_map_page,
+	.unmap_page     = dma_fixed_unmap_page,
 };
 
 static void cell_dma_dev_setup_fixed(struct device *dev);
Index: upstream/arch/powerpc/platforms/iseries/iommu.c
===================================================================
--- upstream.orig/arch/powerpc/platforms/iseries/iommu.c
+++ upstream/arch/powerpc/platforms/iseries/iommu.c
@@ -215,14 +215,15 @@ EXPORT_SYMBOL_GPL(iseries_hv_free);
 dma_addr_t iseries_hv_map(void *vaddr, size_t size,
 			enum dma_data_direction direction)
 {
-	return iommu_map_single(NULL, &vio_iommu_table, vaddr, size,
-				DMA_32BIT_MASK, direction, NULL);
+	return iommu_map_page(NULL, &vio_iommu_table, virt_to_page(vaddr),
+			      (unsigned long)vaddr % PAGE_SIZE, size,
+			      DMA_32BIT_MASK, direction, NULL);
 }
 
 void iseries_hv_unmap(dma_addr_t dma_handle, size_t size,
 			enum dma_data_direction direction)
 {
-	iommu_unmap_single(&vio_iommu_table, dma_handle, size, direction, NULL);
+	iommu_unmap_page(&vio_iommu_table, dma_handle, size, direction, NULL);
 }
 
 void __init iommu_vio_init(void)
Index: upstream/arch/powerpc/platforms/ps3/system-bus.c
===================================================================
--- upstream.orig/arch/powerpc/platforms/ps3/system-bus.c
+++ upstream/arch/powerpc/platforms/ps3/system-bus.c
@@ -555,18 +555,19 @@ static void ps3_free_coherent(struct dev
 }
 
 /* Creates TCEs for a user provided buffer.  The user buffer must be
- * contiguous real kernel storage (not vmalloc).  The address of the buffer
- * passed here is the kernel (virtual) address of the buffer.  The buffer
- * need not be page aligned, the dma_addr_t returned will point to the same
- * byte within the page as vaddr.
+ * contiguous real kernel storage (not vmalloc).  The address passed here
+ * comprises a page address and offset into that page. The dma_addr_t
+ * returned will point to the same byte within the page as was passed in.
  */
 
-static dma_addr_t ps3_sb_map_single(struct device *_dev, void *ptr, size_t size,
-	enum dma_data_direction direction, struct dma_attrs *attrs)
+static dma_addr_t ps3_sb_map_page(struct device *_dev, struct page *page,
+	unsigned long offset, size_t size, enum dma_data_direction direction,
+	struct dma_attrs *attrs)
 {
 	struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
 	int result;
 	unsigned long bus_addr;
+	void *ptr = page_address(page) + offset;
 
 	result = ps3_dma_map(dev->d_region, (unsigned long)ptr, size,
 			     &bus_addr,
@@ -580,15 +581,16 @@ static dma_addr_t ps3_sb_map_single(stru
 	return bus_addr;
 }
 
-static dma_addr_t ps3_ioc0_map_single(struct device *_dev, void *ptr,
-				      size_t size,
-				      enum dma_data_direction direction,
-				      struct dma_attrs *attrs)
+static dma_addr_t ps3_ioc0_map_page(struct device *_dev, struct page *page,
+				    unsigned long offset, size_t size,
+				    enum dma_data_direction direction,
+				    struct dma_attrs *attrs)
 {
 	struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
 	int result;
 	unsigned long bus_addr;
 	u64 iopte_flag;
+	void *ptr = page_address(page) + offset;
 
 	iopte_flag = IOPTE_M;
 	switch (direction) {
@@ -615,7 +617,7 @@ static dma_addr_t ps3_ioc0_map_single(st
 	return bus_addr;
 }
 
-static void ps3_unmap_single(struct device *_dev, dma_addr_t dma_addr,
+static void ps3_unmap_page(struct device *_dev, dma_addr_t dma_addr,
 	size_t size, enum dma_data_direction direction, struct dma_attrs *attrs)
 {
 	struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
@@ -689,21 +691,21 @@ static int ps3_dma_supported(struct devi
 static struct dma_mapping_ops ps3_sb_dma_ops = {
 	.alloc_coherent = ps3_alloc_coherent,
 	.free_coherent = ps3_free_coherent,
-	.map_single = ps3_sb_map_single,
-	.unmap_single = ps3_unmap_single,
 	.map_sg = ps3_sb_map_sg,
 	.unmap_sg = ps3_sb_unmap_sg,
-	.dma_supported = ps3_dma_supported
+	.dma_supported = ps3_dma_supported,
+	.map_page = ps3_sb_map_page,
+	.unmap_page = ps3_unmap_page,
 };
 
 static struct dma_mapping_ops ps3_ioc0_dma_ops = {
 	.alloc_coherent = ps3_alloc_coherent,
 	.free_coherent = ps3_free_coherent,
-	.map_single = ps3_ioc0_map_single,
-	.unmap_single = ps3_unmap_single,
 	.map_sg = ps3_ioc0_map_sg,
 	.unmap_sg = ps3_ioc0_unmap_sg,
-	.dma_supported = ps3_dma_supported
+	.dma_supported = ps3_dma_supported,
+	.map_page = ps3_ioc0_map_page,
+	.unmap_page = ps3_unmap_page,
 };
 
 /**
