xen/arm,arm64: rename __generic_dma_ops to xen_get_dma_ops

Now that __generic_dma_ops is a xen specific function, rename it to
xen_get_dma_ops. Change all the call sites appropriately.

Signed-off-by: Stefano Stabellini <sstabellini@kernel.org>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
CC: linux@armlinux.org.uk
CC: catalin.marinas@arm.com
CC: will.deacon@arm.com
CC: boris.ostrovsky@oracle.com
CC: jgross@suse.com
CC: Julien Grall <julien.grall@arm.com>

drivers/xen/swiotlb-xen.c

@@ -693,8 +693,8 @@ xen_swiotlb_dma_mmap(struct device *dev, struct vm_area_struct *vma,
 		     unsigned long attrs)
 {
 #if defined(CONFIG_ARM) || defined(CONFIG_ARM64)
-	if (__generic_dma_ops(dev)->mmap)
-		return __generic_dma_ops(dev)->mmap(dev, vma, cpu_addr,
+	if (xen_get_dma_ops(dev)->mmap)
+		return xen_get_dma_ops(dev)->mmap(dev, vma, cpu_addr,
 						    dma_addr, size, attrs);
 #endif
 	return dma_common_mmap(dev, vma, cpu_addr, dma_addr, size);
@@ -711,7 +711,7 @@ xen_swiotlb_get_sgtable(struct device *dev, struct sg_table *sgt,
 			unsigned long attrs)
 {
 #if defined(CONFIG_ARM) || defined(CONFIG_ARM64)
-	if (__generic_dma_ops(dev)->get_sgtable) {
+	if (xen_get_dma_ops(dev)->get_sgtable) {
 #if 0
 	/*
 	 * This check verifies that the page belongs to the current domain and
@@ -721,7 +721,7 @@ xen_swiotlb_get_sgtable(struct device *dev, struct sg_table *sgt,
 		unsigned long bfn = PHYS_PFN(dma_to_phys(dev, handle));
 		BUG_ON (!page_is_ram(bfn));
 #endif
-		return __generic_dma_ops(dev)->get_sgtable(dev, sgt, cpu_addr,
+		return xen_get_dma_ops(dev)->get_sgtable(dev, sgt, cpu_addr,
 							   handle, size, attrs);
 	}
 #endif

include/xen/arm/page-coherent.h

@@ -5,7 +5,7 @@
 #include <asm/dma-mapping.h>
 #include <linux/dma-mapping.h>
 
-static inline const struct dma_map_ops *__generic_dma_ops(struct device *dev)
+static inline const struct dma_map_ops *xen_get_dma_ops(struct device *dev)
 {
 	if (dev && dev->archdata.dev_dma_ops)
 		return dev->archdata.dev_dma_ops;
@@ -27,13 +27,13 @@ void __xen_dma_sync_single_for_device(struct device *hwdev,
 static inline void *xen_alloc_coherent_pages(struct device *hwdev, size_t size,
 		dma_addr_t *dma_handle, gfp_t flags, unsigned long attrs)
 {
-	return __generic_dma_ops(hwdev)->alloc(hwdev, size, dma_handle, flags, attrs);
+	return xen_get_dma_ops(hwdev)->alloc(hwdev, size, dma_handle, flags, attrs);
 }
 
 static inline void xen_free_coherent_pages(struct device *hwdev, size_t size,
 		void *cpu_addr, dma_addr_t dma_handle, unsigned long attrs)
 {
-	__generic_dma_ops(hwdev)->free(hwdev, size, cpu_addr, dma_handle, attrs);
+	xen_get_dma_ops(hwdev)->free(hwdev, size, cpu_addr, dma_handle, attrs);
 }
 
 static inline void xen_dma_map_page(struct device *hwdev, struct page *page,
@@ -57,7 +57,7 @@ static inline void xen_dma_map_page(struct device *hwdev, struct page *page,
 	 * specific function.
 	 */
 	if (local)
-		__generic_dma_ops(hwdev)->map_page(hwdev, page, offset, size, dir, attrs);
+		xen_get_dma_ops(hwdev)->map_page(hwdev, page, offset, size, dir, attrs);
 	else
 		__xen_dma_map_page(hwdev, page, dev_addr, offset, size, dir, attrs);
 }
@@ -75,8 +75,8 @@ static inline void xen_dma_unmap_page(struct device *hwdev, dma_addr_t handle,
 	 * specific function.
 	 */
 	if (pfn_valid(pfn)) {
-		if (__generic_dma_ops(hwdev)->unmap_page)
-			__generic_dma_ops(hwdev)->unmap_page(hwdev, handle, size, dir, attrs);
+		if (xen_get_dma_ops(hwdev)->unmap_page)
+			xen_get_dma_ops(hwdev)->unmap_page(hwdev, handle, size, dir, attrs);
 	} else
 		__xen_dma_unmap_page(hwdev, handle, size, dir, attrs);
 }
@@ -86,8 +86,8 @@ static inline void xen_dma_sync_single_for_cpu(struct device *hwdev,
 {
 	unsigned long pfn = PFN_DOWN(handle);
 	if (pfn_valid(pfn)) {
-		if (__generic_dma_ops(hwdev)->sync_single_for_cpu)
-			__generic_dma_ops(hwdev)->sync_single_for_cpu(hwdev, handle, size, dir);
+		if (xen_get_dma_ops(hwdev)->sync_single_for_cpu)
+			xen_get_dma_ops(hwdev)->sync_single_for_cpu(hwdev, handle, size, dir);
 	} else
 		__xen_dma_sync_single_for_cpu(hwdev, handle, size, dir);
 }
@@ -97,8 +97,8 @@ static inline void xen_dma_sync_single_for_device(struct device *hwdev,
 {
 	unsigned long pfn = PFN_DOWN(handle);
 	if (pfn_valid(pfn)) {
-		if (__generic_dma_ops(hwdev)->sync_single_for_device)
-			__generic_dma_ops(hwdev)->sync_single_for_device(hwdev, handle, size, dir);
+		if (xen_get_dma_ops(hwdev)->sync_single_for_device)
+			xen_get_dma_ops(hwdev)->sync_single_for_device(hwdev, handle, size, dir);
 	} else
 		__xen_dma_sync_single_for_device(hwdev, handle, size, dir);
 }