Tao Tang <[email protected]> writes: > Add a qtest suite that validates ARM SMMUv3 translation without guest > firmware or OS. The tests leverage iommu-testdev to trigger DMA > operations and the qos-smmuv3 library to configure IOMMU translation > structures. > > This test suite targets the virt machine and covers: > - Stage 1 only translation (VA -> PA via CD page tables) > - Stage 2 only translation (IPA -> PA via STE S2 tables) > - Nested translation (VA -> IPA -> PA, Stage 1 + Stage 2) > - Design to extended to support multiple security spaces > (Non-Secure, Secure, Root, Realm) > > Each test case follows this sequence: > 1. Initialize SMMUv3 with appropriate command/event queues > 2. Build translation tables (STE/CD/PTE) for the target scenario > 3. Configure iommu-testdev with IOVA and DMA attributes via MMIO > 4. Trigger DMA and validate successful translation > 5. Verify data integrity through a deterministic write-read pattern > > This bare-metal approach provides deterministic IOMMU testing with > minimal dependencies, making failures directly attributable to the SMMU > translation path. > > Signed-off-by: Tao Tang <[email protected]> > Tested-by: Pierrick Bouvier <[email protected]> > Reviewed-by: Pierrick Bouvier <[email protected]>
Reviewed-by: Fabiano Rosas <[email protected]>
