4K pages header added
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Authored by br on Apr 16 2021, 2:29 PM.

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emaste

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andrew
manu

Summary

Move 4K page macroses/indexes to a separate file.
This is optional, but could be needed for 16K pages development

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br created this revision.Apr 16 2021, 2:29 PM

Herald added a reviewer: manu. · View Herald TranscriptApr 16 2021, 2:29 PM

Herald added a subscriber: emaste. · View Herald Transcript

br requested review of this revision.Apr 16 2021, 2:29 PM

Would be interested in seeing a sketch of where this is going to go

This is for iommu support because, as far as I can tell, the SMMU and Mali iommus only support 4k pages. I think we want to duplicate these macros entierly and give them a unique prefix, e.g. L0_SHIFT -> SMMU_L0_SHIFT. I would also put the header under sys/arm64/iommu as it's then not tied to arm64 (it could also be used on 32-bit arm).