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ADR-0001 Rev 2: 51-bit PhysAddr layout with concrete sub-unit tables

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Remove rack_id (4 bits), rename sip_seg→die_id, shift fields to enable
42-bit local_offset (4 TB per die). Define PE_LOCAL/MCPU_LOCAL/CUBE_SRAM
sub-unit tables for AHBM dies and IOCPU sub-unit table for IOCHIPLET
dies (1 TB window). Supersedes ADR-0031.

Also fixes latent VA/PA confusion in pe_dma pipeline DMA path where
virtual addresses were decoded as physical addresses without MMU
translation — previously masked by coincidental bit-position alignment.

529 passed (+6 recovered), 10 pre-existing failures unchanged.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Yangwook Kang
2026-04-27 15:52:29 -07:00
parent e9cc40f74d
commit 81cc32c46b
27 changed files with 814 additions and 272 deletions
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docs/adr/ADR-0031-physaddr-pe-resource-extension.md
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## Status
Stub (Blocker for ADR-0030 — specific range allocations TBD)
Superseded by ADR-0001 (Revision 2, 2026-04-27).
PE_LOCAL / MCPU_LOCAL / CUBE_SRAM sub-unit tables are now defined in
ADR-0001 D2.3.3-D2.3.5.
Previous status: Stub (Blocker for ADR-0030 — specific range allocations TBD)
## Context