commit 8b648ac856d73e8d140d8cfdb2232c61f54b3f50
author Daecheol You <daecheol.you@samsung.com> Mon Mar 14 13:57:04 2022 +0900
committer Daecheol You <daecheol.you@samsung.com> Thu May 26 00:38:23 2022 +0000
tree ccd12fb71aacf28802c01bedd5f3c19712630842
parent 53500ac611fee75ff9d6600e4a3b63daf965c103

mem-ruby: add missing response for ReadOnce

When HNF snoops an RNF with SnpOnce to process
ReadOnce request (e.g. DMA read request),
the RNF can respond with SnpRespData_UC if the cache line is in UC.
Thus, SnpRespData_UC was added to the transition events.

Change-Id: Ife242e75feb9d2451eb99511e21833d9d190a6c3
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/58410
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Tiago Muck <tiago.muck@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>

src/mem/ruby/protocol/chi/CHI-cache-transitions.sm

diff --git a/src/mem/ruby/protocol/chi/CHI-cache-transitions.sm b/src/mem/ruby/protocol/chi/CHI-cache-transitions.sm
index a1e414f..87e5f0b 100644
--- a/src/mem/ruby/protocol/chi/CHI-cache-transitions.sm
+++ b/src/mem/ruby/protocol/chi/CHI-cache-transitions.sm
@@ -1085,7 +1085,7 @@
 
 transition(BUSY_BLKD,
            {SnpRespData_I_PD,SnpRespData_I,SnpRespData_SC_PD,
-            SnpRespData_SC,SnpRespData_SD,SnpRespData_UD,
+            SnpRespData_SC,SnpRespData_SD,SnpRespData_UC,SnpRespData_UD,
             SnpRespData_SC_Fwded_SC,SnpRespData_SC_Fwded_SD_PD,
             SnpRespData_SC_PD_Fwded_SC,SnpRespData_I_Fwded_SD_PD,
             SnpRespData_I_PD_Fwded_SC,SnpRespData_I_Fwded_SC}) {