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Only invalidate WRAP bursts if they are unmodifiable #382

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Merged
merged 2 commits into from
Jul 1, 2025
Merged

Only invalidate WRAP bursts if they are unmodifiable #382

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d791b15
Only invalidate WRAP bursts if they are unmodifiable
Jul 1, 2025
a459f05
Fixup misleading comment
Jul 1, 2025
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6 changes: 3 additions & 3 deletions src/axi_burst_unwrap.sv
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Original file line number Diff line number Diff line change
Expand Up @@ -101,9 +101,9 @@ module axi_burst_unwrap #(
// ATOPs are not supported.
if (atop != '0) return 1'b0;
// The AXI Spec (A3.4.1) only allows splitting non-modifiable transactions ..
if (!axi_pkg::modifiable(cache)) begin
// .. if they are INCR bursts and longer than 16 beats.
return (burst == axi_pkg::BURST_INCR) & (len > 16);
// ... but this module only splits WRAP bursts, so ignore all others
if (!axi_pkg::modifiable(cache) && (burst == axi_pkg::BURST_WRAP)) begin
return 1'b0;
end
// All other transactions are supported.
return 1'b1;
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