IOPGD_TABLE_SIZE
iommu->pgtable = kzalloc(IOPGD_TABLE_SIZE, GFP_ATOMIC);
IOPGD_TABLE_SIZE)))
obj->pd_dma = dma_map_single(obj->dev, iopgd, IOPGD_TABLE_SIZE,
dma_unmap_single(obj->dev, obj->pd_dma, IOPGD_TABLE_SIZE,