1 files changed, 16 insertions, 21 deletions

diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c
index 6719f9efea09..b2b5792b2caa 100644
--- a/arch/arm64/mm/dma-mapping.c
+++ b/arch/arm64/mm/dma-mapping.c
@@ -7,38 +7,38 @@
 #include <linux/gfp.h>
 #include <linux/cache.h>
 #include <linux/dma-map-ops.h>
-#include <linux/dma-iommu.h>
 #include <xen/xen.h>
-#include <xen/swiotlb-xen.h>
 
 #include <asm/cacheflush.h>
+#include <asm/xen/xen-ops.h>
 
 void arch_sync_dma_for_device(phys_addr_t paddr, size_t size,
-		enum dma_data_direction dir)
+			      enum dma_data_direction dir)
 {
-	__dma_map_area(phys_to_virt(paddr), size, dir);
+	unsigned long start = (unsigned long)phys_to_virt(paddr);
+
+	dcache_clean_poc(start, start + size);
 }
 
 void arch_sync_dma_for_cpu(phys_addr_t paddr, size_t size,
-		enum dma_data_direction dir)
+			   enum dma_data_direction dir)
 {
-	__dma_unmap_area(phys_to_virt(paddr), size, dir);
+	unsigned long start = (unsigned long)phys_to_virt(paddr);
+
+	if (dir == DMA_TO_DEVICE)
+		return;
+
+	dcache_inval_poc(start, start + size);
 }
 
 void arch_dma_prep_coherent(struct page *page, size_t size)
 {
-	__dma_flush_area(page_address(page), size);
-}
+	unsigned long start = (unsigned long)page_address(page);
 
-#ifdef CONFIG_IOMMU_DMA
-void arch_teardown_dma_ops(struct device *dev)
-{
-	dev->dma_ops = NULL;
+	dcache_clean_poc(start, start + size);
 }
-#endif
 
-void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size,
-			const struct iommu_ops *iommu, bool coherent)
+void arch_setup_dma_ops(struct device *dev, bool coherent)
 {
 	int cls = cache_line_size_of_cpu();
 
@@ -49,11 +49,6 @@ void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size,
 		   ARCH_DMA_MINALIGN, cls);
 
 	dev->dma_coherent = coherent;
-	if (iommu)
-		iommu_setup_dma_ops(dev, dma_base, dma_base + size - 1);
 
-#ifdef CONFIG_XEN
-	if (xen_swiotlb_detect())
-		dev->dma_ops = &xen_swiotlb_dma_ops;
-#endif
+	xen_setup_dma_ops(dev);
 }