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Revise Multichip routing #2430

Merged
merged 19 commits into from
Apr 27, 2020
Merged

Revise Multichip routing #2430

merged 19 commits into from
Apr 27, 2020

Commits on Apr 26, 2020

  1. JunctionNode: support unknown arbitration ratios

    @terpstra
    terpstra committed Apr 26, 2020
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  2. RegionReplicator/AddressAdjuster: use uniform parameterization

    @terpstra
    terpstra committed Apr 26, 2020
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  3. subsystem: SystemBus has fixer, replicator and prefixNode

    @hcook @terpstra
    hcook authored and terpstra committed Apr 26, 2020
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  4. debug: make debug sba attachment more generic

    @hcook @terpstra
    hcook authored and terpstra committed Apr 26, 2020
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  5. subsystem: make rocket tile attachment points more generic

    @hcook @terpstra
    hcook authored and terpstra committed Apr 26, 2020
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  6. tilelink: AddressAdjusterWrapper and TLJBarWrapper

    @hcook @terpstra
    hcook authored and terpstra committed Apr 26, 2020
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  7. TLEdge: move towards master/slave terminology 

    No one constructs the objects, so only the accessor methods need be compatible.
    @terpstra
    terpstra committed Apr 26, 2020
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  8. RegionReplicator: save some gates in the common case

    @terpstra
    terpstra committed Apr 26, 2020
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  9. AddressAdjuster: illegal local addreses should route to local error d… 

    …evice

These were being erroneously routed off-chip!
    @terpstra
    terpstra committed Apr 26, 2020
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  10. AddressAdjuster: if all addresses are in the region, don't check

    @terpstra
    terpstra committed Apr 26, 2020
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  11. AddressAdjuster: improve circuit QoR

    @terpstra
    terpstra committed Apr 26, 2020
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  12. AddressAdjuster: The 1:1 case remains illegal

    @terpstra
    terpstra committed Apr 26, 2020
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  13. AddressAdjuster: improve QoR for uniform PMA cases 

    This also makes the error device optional
    @terpstra
    terpstra committed Apr 26, 2020
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  14. tilelink: AddressAdjusterWrapperParams.forceLocal defaults Nil

    @hcook @terpstra
    hcook authored and terpstra committed Apr 26, 2020
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  15. diplomacy: improve :*=* resolution algorithm 

    Previously the algorithm:
  1- explore islands of nodes connected by :*=*
  2- if there are both :*= and :=* connected to the island, report error
  3- if there is a :*= connected to the island, change all :*=* to :*=
  4- if there is a :=* connected to the island, change all :*=* to :=*
  5- default to :=*

The new algorithm:
  1- categorize nodes into arityDirectionFlexible or not (only Adapters are flexible for now)
  2- when asked to resolve a :*=* start exploration on the flexible side (if any, else :=)
  3- explore islands of flexible nodes connected by :*=*
  4- if there are both :*= and :=* connected to the island, report error
  5- if there is a :*= connected to the island, change all :*=* to :*=
  6- if there is a :=* connected to the island, change all :*=* to :=*
  7- default to :=
    @terpstra
    terpstra committed Apr 26, 2020
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  16. tilelink: AddressAdjusterWrapper takes policy param and adds fixers w… 

    …ith :*=*
    @hcook @terpstra
    hcook authored and terpstra committed Apr 26, 2020
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  17. wrappers: add fixer to front of memory bus instead of back of adjuster

    @hcook @terpstra
    hcook authored and terpstra committed Apr 26, 2020
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  18. subsystem: CoherenceManagerWrapper has frontend jbar

    @hcook @terpstra
    hcook authored and terpstra committed Apr 26, 2020
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  19. wrapper: add prefixNode to TLBusWrapper base class

    @hcook @terpstra
    hcook authored and terpstra committed Apr 26, 2020
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