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-rw-r--r--arch/um/include/asm/dma.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/um/include/asm/dma.h b/arch/um/include/asm/dma.h
new file mode 100644
index 000000000..fdc53642c
--- /dev/null
+++ b/arch/um/include/asm/dma.h
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __UM_DMA_H
+#define __UM_DMA_H
+
+#include <asm/io.h>
+
+extern unsigned long uml_physmem;
+
+#define MAX_DMA_ADDRESS (uml_physmem)
+
+#endif