DMA_CCMD_GLOBAL_INVL
DMA_CCMD_GLOBAL_INVL);
iommu->flush.flush_context(iommu, 0, 0, 0, DMA_CCMD_GLOBAL_INVL);
case DMA_CCMD_GLOBAL_INVL:
val = DMA_CCMD_GLOBAL_INVL;