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authorKorey Sewell <ksewell@umich.edu>2009-02-10 15:49:29 -0800
committerKorey Sewell <ksewell@umich.edu>2009-02-10 15:49:29 -0800
commitcf4a00ca410226d3fd1b4db816938b7ddf78a333 (patch)
treef30f6ae1bbdaa1f01faceae5dd85ddf5efcea024 /src/cpu/inorder/resources/cache_unit.cc
parent973d8b8b13b8e4ea178cafa95aaf6538699b8b15 (diff)
downloadgem5-cf4a00ca410226d3fd1b4db816938b7ddf78a333.tar.xz
Configs: Add support for the InOrder CPU model
Diffstat (limited to 'src/cpu/inorder/resources/cache_unit.cc')
-rw-r--r--src/cpu/inorder/resources/cache_unit.cc254
1 files changed, 128 insertions, 126 deletions
diff --git a/src/cpu/inorder/resources/cache_unit.cc b/src/cpu/inorder/resources/cache_unit.cc
index 79ca7a096..6b62c864a 100644
--- a/src/cpu/inorder/resources/cache_unit.cc
+++ b/src/cpu/inorder/resources/cache_unit.cc
@@ -43,7 +43,6 @@ using namespace std;
using namespace TheISA;
using namespace ThePipeline;
-
Tick
CacheUnit::CachePort::recvAtomic(PacketPtr pkt)
{
@@ -80,7 +79,7 @@ CacheUnit::CachePort::recvRetry()
}
CacheUnit::CacheUnit(string res_name, int res_id, int res_width,
- int res_latency, InOrderCPU *_cpu, ThePipeline::Params *params)
+ int res_latency, InOrderCPU *_cpu, ThePipeline::Params *params)
: Resource(res_name, res_id, res_width, res_latency, _cpu),
retryPkt(NULL), retrySlot(-1)
{
@@ -92,9 +91,8 @@ CacheUnit::CacheUnit(string res_name, int res_id, int res_width,
cacheBlocked = false;
}
-
Port *
-CacheUnit::getPort(const std::string &if_name, int idx)
+CacheUnit::getPort(const string &if_name, int idx)
{
if (if_name == resName)
return cachePort;
@@ -106,7 +104,7 @@ int
CacheUnit::getSlot(DynInstPtr inst)
{
if (!inst->validMemAddr()) {
- panic("Mem. Addr. must be set before requesting cache access.\n");
+ panic("Mem. Addr. must be set before requesting cache access\n");
}
Addr req_addr = inst->getMemAddr();
@@ -116,20 +114,19 @@ CacheUnit::getSlot(DynInstPtr inst)
int new_slot = Resource::getSlot(inst);
- if (new_slot != -1) {
- inst->memTime = curTick;
- addrList.push_back(req_addr);
- addrMap[req_addr] = inst->seqNum;
- DPRINTF(InOrderCachePort, "[tid:%i]: [sn:%i]: Address %08p added to dependency list.\n",
- inst->readTid(), inst->seqNum, req_addr);
- return new_slot;
- } else {
+ if (new_slot == -1)
return -1;
- }
-
+ inst->memTime = curTick;
+ addrList.push_back(req_addr);
+ addrMap[req_addr] = inst->seqNum;
+ DPRINTF(InOrderCachePort,
+ "[tid:%i]: [sn:%i]: Address %08p added to dependency list\n",
+ inst->readTid(), inst->seqNum, req_addr);
+ return new_slot;
} else {
- DPRINTF(InOrderCachePort,"Denying request because there is an outstanding"
+ DPRINTF(InOrderCachePort,
+ "Denying request because there is an outstanding"
" request to/for addr. %08p. by [sn:%i] @ tick %i\n",
req_addr, addrMap[req_addr], inst->memTime);
return -1;
@@ -139,11 +136,12 @@ CacheUnit::getSlot(DynInstPtr inst)
void
CacheUnit::freeSlot(int slot_num)
{
- std::vector<Addr>::iterator vect_it = find(addrList.begin(), addrList.end(),
- reqMap[slot_num]->inst->getMemAddr());
+ vector<Addr>::iterator vect_it = find(addrList.begin(), addrList.end(),
+ reqMap[slot_num]->inst->getMemAddr());
assert(vect_it != addrList.end());
- DPRINTF(InOrderCachePort, "[tid:%i]: Address %08p removed from dependency list.\n",
+ DPRINTF(InOrderCachePort,
+ "[tid:%i]: Address %08p removed from dependency list\n",
reqMap[slot_num]->inst->readTid(), (*vect_it));
addrList.erase(vect_it);
@@ -158,7 +156,7 @@ CacheUnit::getRequest(DynInstPtr inst, int stage_num, int res_idx,
ScheduleEntry* sched_entry = inst->resSched.top();
if (!inst->validMemAddr()) {
- panic("Mem. Addr. must be set before requesting cache access.\n");
+ panic("Mem. Addr. must be set before requesting cache access\n");
}
int req_size = 0;
@@ -168,23 +166,26 @@ CacheUnit::getRequest(DynInstPtr inst, int stage_num, int res_idx,
pkt_cmd = MemCmd::ReadReq;
req_size = inst->getMemAccSize();
- DPRINTF(InOrderCachePort, "[tid:%i]: %i byte Read request from [sn:%i] for addr %08p.\n",
+ DPRINTF(InOrderCachePort,
+ "[tid:%i]: %i byte Read request from [sn:%i] for addr %08p\n",
inst->readTid(), req_size, inst->seqNum, inst->getMemAddr());
} else if (sched_entry->cmd == InitiateWriteData) {
pkt_cmd = MemCmd::WriteReq;
req_size = inst->getMemAccSize();
-
- DPRINTF(InOrderCachePort, "[tid:%i]: %i byte Write request from [sn:%i] for addr %08p.\n",
+ DPRINTF(InOrderCachePort,
+ "[tid:%i]: %i byte Write request from [sn:%i] for addr %08p\n",
inst->readTid(), req_size, inst->seqNum, inst->getMemAddr());
} else if (sched_entry->cmd == InitiateFetch){
pkt_cmd = MemCmd::ReadReq;
req_size = sizeof(MachInst); //@TODO: mips16e
- DPRINTF(InOrderCachePort, "[tid:%i]: %i byte Fetch request from [sn:%i] for addr %08p.\n",
+ DPRINTF(InOrderCachePort,
+ "[tid:%i]: %i byte Fetch request from [sn:%i] for addr %08p\n",
inst->readTid(), req_size, inst->seqNum, inst->getMemAddr());
} else {
- panic("%i: Unexpected request type (%i) to %s", curTick, sched_entry->cmd, name());
+ panic("%i: Unexpected request type (%i) to %s", curTick,
+ sched_entry->cmd, name());
}
return new CacheRequest(this, inst, stage_num, id, slot_num,
@@ -205,26 +206,27 @@ CacheUnit::requestAgain(DynInstPtr inst, bool &service_request)
if (cache_req->cmd != inst->resSched.top()->cmd) {
// If different, then update command in the request
cache_req->cmd = inst->resSched.top()->cmd;
- DPRINTF(InOrderCachePort, "[tid:%i]: [sn:%i]: Updating the command for this "
- "instruction.\n", inst->readTid(), inst->seqNum);
+ DPRINTF(InOrderCachePort,
+ "[tid:%i]: [sn:%i]: the command for this instruction\n",
+ inst->readTid(), inst->seqNum);
service_request = true;
} else {
// If same command, just check to see if memory access was completed
// but dont try to re-execute
- DPRINTF(InOrderCachePort, "[tid:%i]: [sn:%i]: requesting this resource again.\n",
+ DPRINTF(InOrderCachePort,
+ "[tid:%i]: [sn:%i]: requesting this resource again\n",
inst->readTid(), inst->seqNum);
service_request = true;
}
-
}
void
CacheUnit::execute(int slot_num)
{
if (cacheBlocked) {
- DPRINTF(InOrderCachePort, "Cache Blocked. Cannot Access.\n");
+ DPRINTF(InOrderCachePort, "Cache Blocked. Cannot Access\n");
return;
}
@@ -243,89 +245,85 @@ CacheUnit::execute(int slot_num)
switch (cache_req->cmd)
{
case InitiateFetch:
- {
- DPRINTF(InOrderCachePort,
- "[tid:%u]: Initiating fetch access to %s for addr. %08p\n",
- tid, name(), cache_req->inst->getMemAddr());
+ DPRINTF(InOrderCachePort,
+ "[tid:%u]: Initiating fetch access to %s for addr. %08p\n",
+ tid, name(), cache_req->inst->getMemAddr());
- DPRINTF(InOrderCachePort,
- "[tid:%u]: Fetching new cache block from addr: %08p\n",
- tid, cache_req->memReq->getVaddr());
+ DPRINTF(InOrderCachePort,
+ "[tid:%u]: Fetching new cache block from addr: %08p\n",
+ tid, cache_req->memReq->getVaddr());
- inst->setCurResSlot(slot_num);
- doDataAccess(inst);
- }
+ inst->setCurResSlot(slot_num);
+ doDataAccess(inst);
break;
case CompleteFetch:
- {
- if (cache_req->isMemAccComplete()) {
- DPRINTF(InOrderCachePort,
- "[tid:%i]: Completing Fetch Access for [sn:%i]\n",
- tid, inst->seqNum);
+ if (cache_req->isMemAccComplete()) {
+ DPRINTF(InOrderCachePort,
+ "[tid:%i]: Completing Fetch Access for [sn:%i]\n",
+ tid, inst->seqNum);
- MachInst mach_inst = cache_req->dataPkt->get<MachInst>();
+ MachInst mach_inst = cache_req->dataPkt->get<MachInst>();
- //@TODO: May Need This Function for Endianness-Compatibility
- //mach_inst = gtoh(*reinterpret_cast<MachInst *>(&cacheData[tid][offset]));
+ /**
+ * @TODO: May Need This Function for Endianness-Compatibility
+ * mach_inst =
+ * gtoh(*reinterpret_cast<MachInst *>(&cacheData[tid][offset]));
+ */
- DPRINTF(InOrderCachePort,
- "[tid:%i]: Fetched instruction is %08p\n",
- tid, mach_inst);
+ DPRINTF(InOrderCachePort,
+ "[tid:%i]: Fetched instruction is %08p\n",
+ tid, mach_inst);
- //ExtMachInst ext_inst
- // = TheISA::makeExtMI(mach_inst, cpu->tcBase(tid));
+ // ExtMachInst ext_inst = makeExtMI(mach_inst, cpu->tcBase(tid));
- inst->setMachInst(mach_inst);
- inst->setASID(tid);
- inst->setThreadState(cpu->thread[tid]);
+ inst->setMachInst(mach_inst);
+ inst->setASID(tid);
+ inst->setThreadState(cpu->thread[tid]);
- DPRINTF(InOrderStage, "[tid:%i]: Instruction [sn:%i] is: %s\n",
- tid, seq_num, inst->staticInst->disassemble(inst->PC));
+ DPRINTF(InOrderStage, "[tid:%i]: Instruction [sn:%i] is: %s\n",
+ tid, seq_num, inst->staticInst->disassemble(inst->PC));
- // Set Up More TraceData info
- if (inst->traceData) {
- inst->traceData->setStaticInst(inst->staticInst);
- inst->traceData->setPC(inst->readPC());
- }
+ // Set Up More TraceData info
+ if (inst->traceData) {
+ inst->traceData->setStaticInst(inst->staticInst);
+ inst->traceData->setPC(inst->readPC());
+ }
- cache_req->done();
- } else {
- DPRINTF(InOrderCachePort, "[tid:%i]: [sn:%i]: Unable to Complete Fetch Access.\n",
+ cache_req->done();
+ } else {
+ DPRINTF(InOrderCachePort,
+ "[tid:%i]: [sn:%i]: Unable to Complete Fetch Access\n",
tid, inst->seqNum);
- DPRINTF(InOrderStall, "STALL: [tid:%i]: Fetch miss from %08p.\n",
- tid, cache_req->inst->readPC());
- cache_req->setCompleted(false);
- }
+ DPRINTF(InOrderStall,
+ "STALL: [tid:%i]: Fetch miss from %08p\n",
+ tid, cache_req->inst->readPC());
+ cache_req->setCompleted(false);
}
break;
case InitiateReadData:
case InitiateWriteData:
- {
- DPRINTF(InOrderCachePort, "[tid:%u]: Initiating data access to %s "
- "for addr. %08p\n",
- tid, name(), cache_req->inst->getMemAddr());
-
- inst->setCurResSlot(slot_num);
- //inst->memAccess();
- inst->initiateAcc();
- }
+ DPRINTF(InOrderCachePort,
+ "[tid:%u]: Initiating data access to %s for addr. %08p\n",
+ tid, name(), cache_req->inst->getMemAddr());
+
+ inst->setCurResSlot(slot_num);
+ //inst->memAccess();
+ inst->initiateAcc();
break;
case CompleteReadData:
case CompleteWriteData:
- {
- DPRINTF(InOrderCachePort,
- "[tid:%i]: [sn:%i]: Trying to Complete Data Access.\n",
- tid, inst->seqNum);
- if (cache_req->isMemAccComplete()) {
- cache_req->done();
- } else {
- DPRINTF(InOrderStall, "STALL: [tid:%i]: Data miss from %08p\n",
- tid, cache_req->inst->getMemAddr());
- cache_req->setCompleted(false);
- }
+ DPRINTF(InOrderCachePort,
+ "[tid:%i]: [sn:%i]: Trying to Complete Data Access\n",
+ tid, inst->seqNum);
+ if (cache_req->isMemAccComplete()) {
+ cache_req->done();
+ } else {
+ DPRINTF(InOrderStall, "STALL: [tid:%i]: Data miss from %08p\n",
+ tid, cache_req->inst->getMemAddr());
+ cache_req->setCompleted(false);
}
break;
@@ -364,12 +362,13 @@ CacheUnit::doDataAccess(DynInstPtr inst)
if (cache_req->dataPkt->isWrite() && memReq->isLocked()) {
assert(cache_req->inst->isStoreConditional());
- DPRINTF(InOrderCachePort, "Evaluating Store Conditional access.\n");
+ DPRINTF(InOrderCachePort, "Evaluating Store Conditional access\n");
do_access = TheISA::handleLockedWrite(cpu, memReq);
}
-
- DPRINTF(InOrderCachePort, "[tid:%i] [sn:%i] attempting to access cache..\n", tid, inst->seqNum);
+ DPRINTF(InOrderCachePort,
+ "[tid:%i] [sn:%i] attempting to access cache\n",
+ tid, inst->seqNum);
//@TODO: If you want to ignore failed store conditional accesses, then
// enable this. However, this might skew memory stats because
@@ -377,7 +376,9 @@ CacheUnit::doDataAccess(DynInstPtr inst)
// - Remove optionality here ...
if (1/*do_access*/) {
if (!cachePort->sendTiming(cache_req->dataPkt)) {
- DPRINTF(InOrderCachePort, "[tid:%i] [sn:%i] is waiting to retry request.\n", tid, inst->seqNum);
+ DPRINTF(InOrderCachePort,
+ "[tid:%i] [sn:%i] is waiting to retry request\n",
+ tid, inst->seqNum);
retrySlot = cache_req->getSlot();
retryReq = cache_req;
@@ -391,7 +392,9 @@ CacheUnit::doDataAccess(DynInstPtr inst)
cache_req->setCompleted(false);
} else {
- DPRINTF(InOrderCachePort, "[tid:%i] [sn:%i] is now waiting for cache response.\n", tid, inst->seqNum);
+ DPRINTF(InOrderCachePort,
+ "[tid:%i] [sn:%i] is now waiting for cache response\n",
+ tid, inst->seqNum);
cache_req->setCompleted();
cache_req->setMemAccPending();
cacheStatus = cacheWaitResponse;
@@ -402,7 +405,8 @@ CacheUnit::doDataAccess(DynInstPtr inst)
assert(cache_req->inst->isStoreConditional());
cache_req->setCompleted(true);
- DPRINTF(LLSC, "[tid:%i]: T%i Ignoring Failed Store Conditional Access.\n",
+ DPRINTF(LLSC,
+ "[tid:%i]: T%i Ignoring Failed Store Conditional Access\n",
tid, tid);
cache_req->dataPkt->req->setExtraData(0);
@@ -431,20 +435,20 @@ CacheUnit::processCacheCompletion(PacketPtr pkt)
if (cache_pkt->cacheReq->isSquashed()) {
DPRINTF(InOrderCachePort,
- "Ignoring completion of squashed access, [tid:%i] [sn:%i].\n",
+ "Ignoring completion of squashed access, [tid:%i] [sn:%i]\n",
cache_pkt->cacheReq->getInst()->readTid(),
cache_pkt->cacheReq->getInst()->seqNum);
cache_pkt->cacheReq->done();
return;
- } else {
- DPRINTF(InOrderCachePort,
- "[tid:%u]: [sn:%i]: Waking from cache access to addr. %08p.\n",
- cache_pkt->cacheReq->getInst()->readTid(),
- cache_pkt->cacheReq->getInst()->seqNum,
- cache_pkt->cacheReq->getInst()->getMemAddr());
}
+ DPRINTF(InOrderCachePort,
+ "[tid:%u]: [sn:%i]: Waking from cache access to addr. %08p\n",
+ cache_pkt->cacheReq->getInst()->readTid(),
+ cache_pkt->cacheReq->getInst()->seqNum,
+ cache_pkt->cacheReq->getInst()->getMemAddr());
+
// Cast to correct request type
CacheRequest *cache_req = dynamic_cast<CacheReqPtr>(
findRequest(cache_pkt->cacheReq->getInst()));
@@ -462,11 +466,11 @@ CacheUnit::processCacheCompletion(PacketPtr pkt)
if (!cache_req->isSquashed()) {
if (inst->resSched.top()->cmd == CompleteFetch) {
DPRINTF(InOrderCachePort,
- "[tid:%u]: [sn:%i]: Processing fetch access.\n",
+ "[tid:%u]: [sn:%i]: Processing fetch access\n",
tid, inst->seqNum);
} else if (inst->staticInst && inst->isMemRef()) {
DPRINTF(InOrderCachePort,
- "[tid:%u]: [sn:%i]: Processing cache access.\n",
+ "[tid:%u]: [sn:%i]: Processing cache access\n",
tid, inst->seqNum);
inst->completeAcc(pkt);
@@ -475,21 +479,22 @@ CacheUnit::processCacheCompletion(PacketPtr pkt)
assert(cache_pkt->isRead());
if (cache_pkt->req->isLocked()) {
- DPRINTF(InOrderCachePort, "[tid:%u]: Handling Load-Linked "
- "access for [sn:%u].\n", tid, inst->seqNum);
+ DPRINTF(InOrderCachePort,
+ "[tid:%u]: Handling Load-Linked for [sn:%u]\n",
+ tid, inst->seqNum);
TheISA::handleLockedRead(cpu, cache_pkt->req);
}
// @TODO: Hardcoded to for load instructions. Assumes that
// the dest. idx 0 is always where the data is loaded to.
DPRINTF(InOrderCachePort,
- "[tid:%u]: [sn:%i]: Data loaded was: %08p.\n",
+ "[tid:%u]: [sn:%i]: Data loaded was: %08p\n",
tid, inst->seqNum, inst->readIntResult(0));
} else if(inst->isStore()) {
assert(cache_pkt->isWrite());
DPRINTF(InOrderCachePort,
- "[tid:%u]: [sn:%i]: Data stored was: %08p.\n",
+ "[tid:%u]: [sn:%i]: Data stored was: %08p\n",
tid, inst->seqNum,
getMemData(cache_pkt));
@@ -509,8 +514,8 @@ CacheUnit::processCacheCompletion(PacketPtr pkt)
cpu->switchToActive(stage_num);
} else {
DPRINTF(InOrderCachePort,
- "[tid:%u] Cache miss on memory access to block @ %08p "
- "completed, but squashed.\n", tid, cache_req->inst->readPC());
+ "[tid:%u] Miss on block @ %08p completed, but squashed\n",
+ tid, cache_req->inst->readPC());
cache_req->setMemAccCompleted();
}
@@ -520,7 +525,7 @@ CacheUnit::processCacheCompletion(PacketPtr pkt)
void
CacheUnit::recvRetry()
{
- DPRINTF(InOrderCachePort, "Retrying Request for [tid:%i] [sn:%i].\n",
+ DPRINTF(InOrderCachePort, "Retrying Request for [tid:%i] [sn:%i]\n",
retryReq->inst->readTid(), retryReq->inst->seqNum);
assert(retryPkt != NULL);
@@ -532,20 +537,20 @@ CacheUnit::recvRetry()
retryPkt = NULL;
cacheBlocked = false;
} else {
- DPRINTF(InOrderCachePort, "Retry Request for [tid:%i] [sn:%i] failed.\n",
+ DPRINTF(InOrderCachePort,
+ "Retry Request for [tid:%i] [sn:%i] failed\n",
retryReq->inst->readTid(), retryReq->inst->seqNum);
}
-
}
void
CacheUnit::squash(DynInstPtr inst, int stage_num,
InstSeqNum squash_seq_num, unsigned tid)
{
- std::vector<int> slot_remove_list;
+ vector<int> slot_remove_list;
- std::map<int, ResReqPtr>::iterator map_it = reqMap.begin();
- std::map<int, ResReqPtr>::iterator map_end = reqMap.end();
+ map<int, ResReqPtr>::iterator map_it = reqMap.begin();
+ map<int, ResReqPtr>::iterator map_end = reqMap.end();
while (map_it != map_end) {
ResReqPtr req_ptr = (*map_it).second;
@@ -555,7 +560,7 @@ CacheUnit::squash(DynInstPtr inst, int stage_num,
req_ptr->getInst()->seqNum > squash_seq_num) {
DPRINTF(InOrderCachePort,
- "[tid:%i] Squashing request from [sn:%i].\n",
+ "[tid:%i] Squashing request from [sn:%i]\n",
req_ptr->getInst()->readTid(), req_ptr->getInst()->seqNum);
req_ptr->setSquashed();
@@ -578,13 +583,13 @@ CacheUnit::squash(DynInstPtr inst, int stage_num,
}
// Now Delete Slot Entry from Req. Map
- for (int i = 0; i < slot_remove_list.size(); i++) {
+ for (int i = 0; i < slot_remove_list.size(); i++)
freeSlot(slot_remove_list[i]);
- }
-
}
-uint64_t CacheUnit::getMemData(Packet *packet) {
+uint64_t
+CacheUnit::getMemData(Packet *packet)
+{
switch (packet->getSize())
{
case 8:
@@ -600,10 +605,7 @@ uint64_t CacheUnit::getMemData(Packet *packet) {
return packet->get<uint64_t>();
default:
- std::cerr << "bad store data size = " << packet->getSize() << std::endl;
-
- assert(0);
- return 0;
+ panic("bad store data size = %d\n", packet->getSize());
}
}