init android origin source code

1 files changed, 24 insertions, 0 deletions

diff --git a/ANDROID_3.4.5/arch/ia64/kernel/dma-mapping.c b/ANDROID_3.4.5/arch/ia64/kernel/dma-mapping.c
new file mode 100644
index 00000000..7f791623
--- /dev/null
+++ b/ANDROID_3.4.5/arch/ia64/kernel/dma-mapping.c
@@ -0,0 +1,24 @@
+#include <linux/dma-mapping.h>
+#include <linux/export.h>
+
+/* Set this to 1 if there is a HW IOMMU in the system */
+int iommu_detected __read_mostly;
+
+struct dma_map_ops *dma_ops;
+EXPORT_SYMBOL(dma_ops);
+
+#define PREALLOC_DMA_DEBUG_ENTRIES (1 << 16)
+
+static int __init dma_init(void)
+{
+	dma_debug_init(PREALLOC_DMA_DEBUG_ENTRIES);
+
+	return 0;
+}
+fs_initcall(dma_init);
+
+struct dma_map_ops *dma_get_ops(struct device *dev)
+{
+	return dma_ops;
+}
+EXPORT_SYMBOL(dma_get_ops);