[PATCH v4 24/28] powerpc/powernv/ioda: Define and implement DMA table/window management callbacks

This extends powerpc_iommu_ops by a set of callbacks to support dynamic DMA windows management. query() returns IOMMU capabilities such as default DMA window address and supported number of DMA windows and TCE table levels. create_table() creates a TCE table with specific parameters. For now it

[PATCH v4 24/28] powerpc/powernv/ioda: Define and implement DMA table/window management callbacks

This extends powerpc_iommu_ops by a set of callbacks to support dynamic DMA windows management. query() returns IOMMU capabilities such as default DMA window address and supported number of DMA windows and TCE table levels. create_table() creates a TCE table with specific parameters. For now it