1 files changed, 69 insertions, 0 deletions
diff --git a/target/linux/realtek/files/arch/rlx/include/asm/mach-generic/dma-coherence.h b/target/linux/realtek/files/arch/rlx/include/asm/mach-generic/dma-coherence.h
new file mode 100644
index 000000000..36c611b6c
--- /dev/null
+++ b/target/linux/realtek/files/arch/rlx/include/asm/mach-generic/dma-coherence.h
@@ -0,0 +1,69 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2006  Ralf Baechle <ralf@linux-mips.org>
+ *
+ */
+#ifndef __ASM_MACH_GENERIC_DMA_COHERENCE_H
+#define __ASM_MACH_GENERIC_DMA_COHERENCE_H
+
+struct device;
+
+static inline dma_addr_t plat_map_dma_mem(struct device *dev, void *addr,
+	size_t size)
+{
+	return virt_to_phys(addr);
+}
+
+static inline dma_addr_t plat_map_dma_mem_page(struct device *dev,
+	struct page *page)
+{
+	return page_to_phys(page);
+}
+
+static inline unsigned long plat_dma_addr_to_phys(dma_addr_t dma_addr)
+{
+	return dma_addr;
+}
+
+static inline void plat_unmap_dma_mem(struct device *dev, dma_addr_t dma_addr)
+{
+}
+
+static inline int plat_dma_supported(struct device *dev, u64 mask)
+{
+	/*
+	 * we fall back to GFP_DMA when the mask isn't all 1s,
+	 * so we can't guarantee allocations that must be
+	 * within a tighter range than GFP_DMA..
+	 */
+	if (mask < DMA_BIT_MASK(24))
+		return 0;
+
+	return 1;
+}
+
+static inline void plat_extra_sync_for_device(struct device *dev)
+{
+	return;
+}
+
+static inline int plat_dma_mapping_error(struct device *dev,
+					 dma_addr_t dma_addr)
+{
+	return 0;
+}
+
+static inline int plat_device_is_coherent(struct device *dev)
+{
+#ifdef CONFIG_DMA_COHERENT
+	return 1;
+#endif
+#ifdef CONFIG_DMA_NONCOHERENT
+	return 0;
+#endif
+}
+
+#endif /* __ASM_MACH_GENERIC_DMA_COHERENCE_H */