LSQ: add XSPerf

src/main/scala/xiangshan/mem/lsqueue/LoadQueue.scala

@@ -421,7 +421,7 @@ class LoadQueue extends XSModule
 
     XSDebug(
       l1Violation,
-      "need rollback (l4 load) pc %x roqidx %d target %x\n",
+      "need rollback (l1 load) pc %x roqidx %d target %x\n",
       io.storeIn(i).bits.uop.cf.pc, io.storeIn(i).bits.uop.roqIdx.asUInt, l1ViolationUop.roqIdx.asUInt
     )
     XSDebug(
@@ -601,6 +601,15 @@ class LoadQueue extends XSModule
 
   allowEnqueue := validCount + enqNumber <= (LoadQueueSize - RenameWidth).U
 
+  // perf counter
+  XSPerf("lqRollback", io.rollback.valid, acc = true) // rollback redirect generated
+  XSPerf("lqFull", !io.allowEnqueue, acc = true)
+  XSPerf("lqMmioCycle", uncacheState =/= s_idle, acc = true) // lq is busy dealing with uncache req
+  XSPerf("lqMmioCnt", io.uncache.req.fire(), acc = true)
+  XSPerf("lqRefill", io.dcache.valid, acc = true)
+  XSPerf("lqWriteback", PopCount(VecInit(0 until LoadPipelineWidth).map(_ => io.ldout(_).fire())), acc = true)
+  XSPerf("lqWbBlocked", PopCount(VecInit(0 until LoadPipelineWidth).map(_ => io.ldout(_).valid && !io.ldout(_).ready), acc = true)
+
   // debug info
   XSDebug("enqPtrExt %d:%d deqPtrExt %d:%d\n", enqPtrExt(0).flag, enqPtr, deqPtrExt.flag, deqPtr)
 

src/main/scala/xiangshan/mem/lsqueue/StoreQueue.scala

@@ -404,6 +404,16 @@ class StoreQueue extends XSModule with HasDCacheParameters with HasCircularQueue
   // for 1 cycle will also promise that sq is empty in that cycle
   io.sqempty := RegNext(enqPtrExt(0).value === deqPtrExt(0).value && enqPtrExt(0).flag === deqPtrExt(0).flag)
 
+  // perf counter
+  XSPerf("sqFull", !io.allowEnqueue, acc = true)
+  XSPerf("sqMmioCycle", uncacheState =/= s_idle, acc = true) // lq is busy dealing with uncache req
+  XSPerf("sqMmioCnt", io.uncache.req.fire(), acc = true)
+  XSPerf("sqWriteback", io.mmioStout.fire(), acc = true)
+  XSPerf("sqWbBlocked", io.mmioStout.valid && !io.mmioStout.ready, acc = true)
+  XSPerf("sqValidEntryCnt", distanceBetween(enqPtrExt(0), deqPtrExt(0)))
+  XSPerf("sqCmtEntryCnt", distanceBetween(cmtPtrExt(0), deqPtrExt(0)))
+  XSPerf("sqNCmtEntryCnt", distanceBetween(enqPtrExt(0), cmtPtrExt(0)))
+
   // debug info
   XSDebug("enqPtrExt %d:%d deqPtrExt %d:%d\n", enqPtrExt(0).flag, enqPtr, deqPtrExt(0).flag, deqPtr)