feat(riscv/iommu): update support for RISC-V IOMMU Device Directory Table - Githubissues

bao-project / bao-hypervisor

Bao, a Lightweight Static Partitioning Hypervisor

Apache License 2.0

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feat(riscv/iommu): update support for RISC-V IOMMU Device Directory Table #150

Open malejo97 opened 6 months ago

malejo97 commented 6 months ago

This PR introduces multiple updates to RISC-V IOMMU support regarding the Device Directory Table.

Changes:

Add support for IOMMU implementations without MSI translation, where each Device Context is 32-bytes wide;
Add support for multi-level device directory tables;
Add mechanism for dynamic selection of IOMMU mode based on the IDs of the devices embedded in the platform.
Format all files using clang-format-19

Validation:

Tested on CVA6-based SoC w/IOMMU and x4 DMA devices with different ID widths
Linux v6.3
OpenSBI v1.0