[Libre-soc-bugs] [Bug 410] New: Design Bus Protocol suitable for speculative execution

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=410

            Bug ID: 410
           Summary: Design Bus Protocol suitable for speculative execution
           Product: Libre-SOC's first SoC
           Version: unspecified
          Hardware: Other
                OS: Linux
            Status: CONFIRMED
          Severity: enhancement
          Priority: ---
         Component: Source Code
          Assignee: lkcl at lkcl.net
          Reporter: lkcl at lkcl.net
                CC: libre-soc-bugs at lists.libre-soc.org
   NLnet milestone: ---

Standard processor Bus APIs (Wishbone) operate on an atomic "take it or leave
it" protocol.  This is unsuitable for speculative execution which needs a
"Contract of Sale" protocol involving "offer, exchange, complete" that may be
cancelled or declined.  This type of Bus Protocol therefore needs to be
designed, implemented and documented.

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