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-rw-r--r--src/cpu/inorder/resource.cc105
1 files changed, 85 insertions, 20 deletions
diff --git a/src/cpu/inorder/resource.cc b/src/cpu/inorder/resource.cc
index cb5681bc1..e63925fe8 100644
--- a/src/cpu/inorder/resource.cc
+++ b/src/cpu/inorder/resource.cc
@@ -47,6 +47,7 @@ Resource::Resource(string res_name, int res_id, int res_width,
Resource::~Resource()
{
delete [] resourceEvent;
+ delete deniedReq;
}
@@ -80,7 +81,9 @@ Resource::regStats()
{
instReqsProcessed
.name(name() + ".instReqsProcessed")
- .desc("Number of Instructions Requests that completed in this resource.");
+ .desc("Number of Instructions Requests that completed in "
+ "this resource.")
+ .prereq(instReqsProcessed);
}
int
@@ -98,11 +101,6 @@ Resource::slotsInUse()
void
Resource::freeSlot(int slot_idx)
{
- DPRINTF(RefCount, "Removing [tid:%i] [sn:%i]'s request from resource [slot:%i].\n",
- reqMap[slot_idx]->inst->readTid(),
- reqMap[slot_idx]->inst->seqNum,
- slot_idx);
-
// Put slot number on this resource's free list
availSlots.push_back(slot_idx);
@@ -159,7 +157,8 @@ Resource::getSlot(DynInstPtr inst)
while (map_it != map_end) {
if ((*map_it).second) {
- DPRINTF(Resource, "Currently Serving request from: [tid:%i] [sn:%i].\n",
+ DPRINTF(Resource, "Currently Serving request from: "
+ "[tid:%i] [sn:%i].\n",
(*map_it).second->getInst()->readTid(),
(*map_it).second->getInst()->seqNum);
}
@@ -176,7 +175,7 @@ Resource::request(DynInstPtr inst)
// See if the resource is already serving this instruction.
// If so, use that request;
bool try_request = false;
- int slot_num;
+ int slot_num = -1;
int stage_num;
ResReqPtr inst_req = findRequest(inst);
@@ -202,10 +201,12 @@ Resource::request(DynInstPtr inst)
inst_req = getRequest(inst, stage_num, id, slot_num, cmd);
if (inst->staticInst) {
- DPRINTF(Resource, "[tid:%i]: [sn:%i] requesting this resource.\n",
+ DPRINTF(Resource, "[tid:%i]: [sn:%i] requesting this "
+ "resource.\n",
inst->readTid(), inst->seqNum);
} else {
- DPRINTF(Resource, "[tid:%i]: instruction requesting this resource.\n",
+ DPRINTF(Resource, "[tid:%i]: instruction requesting this "
+ "resource.\n",
inst->readTid());
}
@@ -232,7 +233,8 @@ Resource::requestAgain(DynInstPtr inst, bool &do_request)
do_request = true;
if (inst->staticInst) {
- DPRINTF(Resource, "[tid:%i]: [sn:%i] requesting this resource again.\n",
+ DPRINTF(Resource, "[tid:%i]: [sn:%i] requesting this resource "
+ "again.\n",
inst->readTid(), inst->seqNum);
} else {
DPRINTF(Resource, "[tid:%i]: requesting this resource again.\n",
@@ -254,15 +256,22 @@ Resource::findRequest(DynInstPtr inst)
map<int, ResReqPtr>::iterator map_it = reqMap.begin();
map<int, ResReqPtr>::iterator map_end = reqMap.end();
+ bool found = false;
+ ResReqPtr req = NULL;
+
while (map_it != map_end) {
if ((*map_it).second &&
- (*map_it).second->getInst() == inst) {
- return (*map_it).second;
+ (*map_it).second->getInst() == inst) {
+ req = (*map_it).second;
+ //return (*map_it).second;
+ assert(found == false);
+ found = true;
}
map_it++;
}
- return NULL;
+ return req;
+ //return NULL;
}
void
@@ -334,6 +343,12 @@ Resource::squash(DynInstPtr inst, int stage_num, InstSeqNum squash_seq_num,
}
}
+void
+Resource::squashDueToMemStall(DynInstPtr inst, int stage_num, InstSeqNum squash_seq_num,
+ ThreadID tid)
+{
+ squash(inst, stage_num, squash_seq_num, tid);
+}
Tick
Resource::ticks(int num_cycles)
@@ -394,22 +409,72 @@ Resource::unscheduleEvent(DynInstPtr inst)
int ResourceRequest::resReqID = 0;
-int ResourceRequest::resReqCount = 0;
+int ResourceRequest::maxReqCount = 0;
+
+ResourceRequest::ResourceRequest(Resource *_res, DynInstPtr _inst,
+ int stage_num, int res_idx, int slot_num,
+ unsigned _cmd)
+ : res(_res), inst(_inst), cmd(_cmd), stageNum(stage_num),
+ resIdx(res_idx), slotNum(slot_num), completed(false),
+ squashed(false), processing(false), memStall(false)
+{
+#ifdef DEBUG
+ reqID = resReqID++;
+ res->cpu->resReqCount++;
+ DPRINTF(ResReqCount, "Res. Req %i created. resReqCount=%i.\n", reqID,
+ res->cpu->resReqCount);
+
+ if (res->cpu->resReqCount > 100) {
+ fatal("Too many undeleted resource requests. Memory leak?\n");
+ }
+
+ if (res->cpu->resReqCount > maxReqCount) {
+ maxReqCount = res->cpu->resReqCount;
+ res->cpu->maxResReqCount = maxReqCount;
+ }
+
+#endif
+
+ stagePasses = 0;
+ complSlotNum = -1;
+
+}
+
+ResourceRequest::~ResourceRequest()
+{
+#ifdef DEBUG
+ res->cpu->resReqCount--;
+ DPRINTF(ResReqCount, "Res. Req %i deleted. resReqCount=%i.\n", reqID,
+ res->cpu->resReqCount);
+#endif
+}
void
ResourceRequest::done(bool completed)
{
- DPRINTF(Resource, "%s done with request from [sn:%i] [tid:%i].\n",
- res->name(), inst->seqNum, inst->readTid());
+ DPRINTF(Resource, "%s [slot:%i] done with request from [sn:%i] [tid:%i].\n",
+ res->name(), slotNum, inst->seqNum, inst->readTid());
setCompleted(completed);
- // Add to remove list
- res->cpu->reqRemoveList.push(res->reqMap[slotNum]);
-
+ // Used for debugging purposes
+ if (completed) {
+ complSlotNum = slotNum;
+
+ // Would like to start a convention such as all requests deleted in resources/pipeline
+ // but a little more complex then it seems...
+ // For now, all COMPLETED requests deleted in resource..
+ // all FAILED requests deleted in pipeline stage
+ // *all SQUASHED requests deleted in resource
+ res->cpu->reqRemoveList.push(res->reqMap[slotNum]);
+ }
+
// Free Slot So Another Instruction Can Use This Resource
res->freeSlot(slotNum);
+ // change slot # to -1, since we check slotNum to see if request is still valid
+ slotNum = -1;
+
res->instReqsProcessed++;
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-10 10:51:18 +0000