iommu_setup_dma_ops   53 arch/arm64/mm/dma-mapping.c 		iommu_setup_dma_ops(dev, dma_base, size);
iommu_setup_dma_ops   22 include/linux/dma-iommu.h void iommu_setup_dma_ops(struct device *dev, u64 dma_base, u64 size);