public InternalCleanRequestFast(InternalRequestType type, IntegerPageAddress targetPageAddress, bool isEmergency, bool isFast)
: base(type, targetPageAddress, isEmergency, isFast)
{
InternalWriteRequestList = new InternalWriteRequestLinkedList();
this.IsEmergency = isEmergency;
this.IsFast = isFast;
}
public IntegerPageAddress(IntegerPageAddress addressToCopy)
{
this.ChannelID = addressToCopy.ChannelID;
this.LocalFlashChipID = addressToCopy.LocalFlashChipID;
this.DieID = addressToCopy.DieID;
this.PlaneID = addressToCopy.PlaneID;
this.BlockID = addressToCopy.BlockID;
this.PageID = addressToCopy.PageID;
this.OverallFlashChipID = addressToCopy.OverallFlashChipID;
}
public bool EqualsForInterleaved(IntegerPageAddress referenceAddress)
{
if ((this.DieID == referenceAddress.DieID) ||
(this.LocalFlashChipID != referenceAddress.LocalFlashChipID) ||
(this.ChannelID != referenceAddress.ChannelID) ||
(this.OverallFlashChipID != referenceAddress.OverallFlashChipID)
)
{
return(false);
}
return(true);
}
public bool EqualsForMultiplaneErase(IntegerPageAddress referenceAddress, bool BAConstraint)
{
if (((this.BlockID != referenceAddress.BlockID) && BAConstraint) ||
(this.PlaneID == referenceAddress.PlaneID) ||
(this.DieID != referenceAddress.DieID) ||
(this.LocalFlashChipID != referenceAddress.LocalFlashChipID) ||
(this.ChannelID != referenceAddress.ChannelID) ||
(this.OverallFlashChipID != referenceAddress.OverallFlashChipID)
)
{
return(false);
}
return(true);
}
public FlashChipPlane(uint channelID, uint overallChipID, uint localChipID, uint dieID, uint planeID,
uint BlocksNoPerPlane, uint PagesNoPerBlock)
{
this.PlaneGlobalAddress = new IntegerPageAddress(channelID, localChipID, dieID, planeID, 0, 0, overallChipID);
this.BlockNo = BlocksNoPerPlane;
this.FreePagesNo = BlocksNoPerPlane * PagesNoPerBlock;
this.Blocks = new FlashChipBlock[BlocksNoPerPlane];
for (uint i = 0; i < BlocksNoPerPlane; i++)
{
this.Blocks[i] = new FlashChipBlock(PagesNoPerBlock, i);
}
this.ReadCount = 0;
this.ProgamCount = 0;
this.EraseCount = 0;
this.CurrentActiveBlockID = 0;
this.CurrentActiveBlock = this.Blocks[0];
}
public InternalRequest(InternalRequestType type, uint sizeInSubpages, uint sizeInByte, uint bodyTransferCycles, IntegerPageAddress targetPageAddress)
{
this.Type = type;
this.SizeInSubpages = sizeInSubpages;
this.SizeInByte = sizeInByte;
this.BodyTransferCycles = bodyTransferCycles;
TargetPageAddress.ChannelID = targetPageAddress.ChannelID;
TargetPageAddress.LocalFlashChipID = targetPageAddress.LocalFlashChipID;
TargetPageAddress.DieID = targetPageAddress.DieID;
TargetPageAddress.PlaneID = targetPageAddress.PlaneID;
TargetPageAddress.BlockID = targetPageAddress.BlockID;
TargetPageAddress.PageID = targetPageAddress.PageID;
TargetPageAddress.OverallFlashChipID = targetPageAddress.OverallFlashChipID;
}
public void prepare()
{
IntegerPageAddress tempAddress = new IntegerPageAddress(0, 0, 0, 0, 0, 0, 0);
switch (InitialSSDStatus)
{
case InitialStatus.SteadyState:
double validPagesAverage = ((double)initialPercentageOfValidPages / 100) * FTL.PagesNoPerBlock;
double validPagesStdDev = ((double)initialPercentagesOfValidPagesStdDev / 100) * FTL.PagesNoPerBlock;
uint totalAvailableBlocks = FTL.BlockNoPerPlane - (FTL.GarbageCollector.EmergencyThreshold_PlaneFreePages / FTL.PagesNoPerBlock) - 1;
for (uint channelID = 0; channelID < FTL.ChannelCount; channelID++)
{
for (uint chipID = 0; chipID < FTL.ChipNoPerChannel; chipID++)
{
for (uint dieID = 0; dieID < FTL.DieNoPerChip; dieID++)
{
for (uint planeID = 0; planeID < FTL.PlaneNoPerDie; planeID++)
{
FlashChipPlane targetPlane = FTL.ChannelInfos[channelID].FlashChips[chipID].Dies[dieID].Planes[planeID];
for (uint blockID = 0; blockID < totalAvailableBlocks; blockID++)
{
double randomValue = pageStatusRandomGenerator.Normal(validPagesAverage, validPagesStdDev);
if (randomValue < 0)
{
randomValue = validPagesAverage + (validPagesAverage - randomValue);
}
uint numberOfValidPages = Convert.ToUInt32(randomValue); // * FTL.PagesNoPerBlock);
if (numberOfValidPages > FTL.PagesNoPerBlock)
{
numberOfValidPages = FTL.PagesNoPerBlock;
}
for (uint pageID = 0; pageID < numberOfValidPages; pageID++)
{
FTL.MakePageValid(channelID, chipID, dieID, planeID, blockID, pageID);
}
for (uint pageID = numberOfValidPages; pageID < FTL.PagesNoPerBlock; pageID++)
{
FTL.MakePageInvalid(channelID, chipID, dieID, planeID, blockID, pageID);
}
if (FTL.ChannelInfos[channelID].FlashChips[chipID].Dies[dieID].Planes[planeID].Blocks[blockID].FreePageNo != 0)
{
throw new Exception("Huh for free pages");
}
if (FTL.ChannelInfos[channelID].FlashChips[chipID].Dies[dieID].Planes[planeID].Blocks[blockID].LastWrittenPageNo != 255)
{
throw new Exception("Huh for last written page no");
}
}
}
}
}
}
break;
case InitialStatus.Empty:
break;
default:
throw new Exception("Unhandled initial status!");
}
}
public InternalCleanRequest(InternalRequestType type, IntegerPageAddress targetPageAddress, bool isEmergency, bool isFast, InternalRequestExecutionType execType)
: this(type, targetPageAddress, isEmergency, isFast)
{
this.ExecutionType = execType;
}
public void Segment(uint streamID)
{
if (Locked)
{
return;
}
Locked = true;
while (myHandler.Flows[streamID].DeviceInternalQueue.Count > 0)
{
IORequest currentRequest = myHandler.Flows[streamID].DeviceInternalQueue.First.Value;
myHandler.Flows[streamID].DeviceInternalQueue.RemoveFirst();
SegmentIORequestNoCache(currentRequest);
IntegerPageAddress addr = null;
foreach (InternalRequest ir in currentRequest.InternalRequestList)
{
addr = ir.TargetPageAddress;
if (ir.Type == InternalRequestType.Read)
{
if (!myFTL.ResourceAccessTable.ChannelEntries[addr.ChannelID].WaitingReadRequests.ContainsKey(currentRequest))
{
myFTL.ResourceAccessTable.ChannelEntries[addr.ChannelID].WaitingReadRequests.Add(currentRequest, 1);
}
else
{
myFTL.ResourceAccessTable.ChannelEntries[addr.ChannelID].WaitingReadRequests[currentRequest] = ((int)myFTL.ResourceAccessTable.ChannelEntries[addr.ChannelID].WaitingReadRequests[currentRequest]) + 1;
}
if (!myFTL.ResourceAccessTable.DieEntries[addr.ChannelID][addr.LocalFlashChipID][addr.DieID].WaitingReadRequests.ContainsKey(currentRequest))
{
myFTL.ResourceAccessTable.DieEntries[addr.ChannelID][addr.LocalFlashChipID][addr.DieID].WaitingReadRequests.Add(currentRequest, 1);
}
else
{
myFTL.ResourceAccessTable.DieEntries[addr.ChannelID][addr.LocalFlashChipID][addr.DieID].WaitingReadRequests[currentRequest]
= ((int)myFTL.ResourceAccessTable.DieEntries[addr.ChannelID][addr.LocalFlashChipID][addr.DieID].WaitingReadRequests[currentRequest]) + 1;
}
if (!myFTL.ResourceAccessTable.PlaneEntries[addr.ChannelID][addr.LocalFlashChipID][addr.DieID][addr.PlaneID].WaitingReadRequests.ContainsKey(currentRequest))
{
myFTL.ResourceAccessTable.PlaneEntries[addr.ChannelID][addr.LocalFlashChipID][addr.DieID][addr.PlaneID].WaitingReadRequests.Add(currentRequest, 1);
}
else
{
myFTL.ResourceAccessTable.PlaneEntries[addr.ChannelID][addr.LocalFlashChipID][addr.DieID][addr.PlaneID].WaitingReadRequests[currentRequest]
= ((int)myFTL.ResourceAccessTable.PlaneEntries[addr.ChannelID][addr.LocalFlashChipID][addr.DieID][addr.PlaneID].WaitingReadRequests[currentRequest]) + 1;
}
myHandler.Flows[streamID].ReadQueue.AddLast(ir as InternalReadRequest);
myFTL.ResourceAccessTable.ChannelEntries[addr.ChannelID].WaitingReadCount++;
myFTL.ResourceAccessTable.DieEntries[addr.ChannelID][addr.LocalFlashChipID][addr.DieID].WaitingReadCount++;
myFTL.ResourceAccessTable.PlaneEntries[addr.ChannelID][addr.LocalFlashChipID][addr.DieID][addr.PlaneID].WaitingReadCount++;
}
else
{
if (!myFTL.ResourceAccessTable.ChannelEntries[addr.ChannelID].WaitingWriteRequests.ContainsKey(currentRequest))
{
myFTL.ResourceAccessTable.ChannelEntries[addr.ChannelID].WaitingWriteRequests.Add(currentRequest, 1);
}
else
{
myFTL.ResourceAccessTable.ChannelEntries[addr.ChannelID].WaitingWriteRequests[currentRequest] = ((int)myFTL.ResourceAccessTable.ChannelEntries[addr.ChannelID].WaitingWriteRequests[currentRequest]) + 1;
}
if (!myFTL.ResourceAccessTable.DieEntries[addr.ChannelID][addr.LocalFlashChipID][addr.DieID].WaitingWriteRequests.ContainsKey(currentRequest))
{
myFTL.ResourceAccessTable.DieEntries[addr.ChannelID][addr.LocalFlashChipID][addr.DieID].WaitingWriteRequests.Add(currentRequest, 1);
}
else
{
myFTL.ResourceAccessTable.DieEntries[addr.ChannelID][addr.LocalFlashChipID][addr.DieID].WaitingWriteRequests[currentRequest]
= ((int)myFTL.ResourceAccessTable.DieEntries[addr.ChannelID][addr.LocalFlashChipID][addr.DieID].WaitingWriteRequests[currentRequest]) + 1;
}
if (!myFTL.ResourceAccessTable.PlaneEntries[addr.ChannelID][addr.LocalFlashChipID][addr.DieID][addr.PlaneID].WaitingWriteRequests.ContainsKey(currentRequest))
{
myFTL.ResourceAccessTable.PlaneEntries[addr.ChannelID][addr.LocalFlashChipID][addr.DieID][addr.PlaneID].WaitingWriteRequests.Add(currentRequest, 1);
}
else
{
myFTL.ResourceAccessTable.PlaneEntries[addr.ChannelID][addr.LocalFlashChipID][addr.DieID][addr.PlaneID].WaitingWriteRequests[currentRequest]
= ((int)myFTL.ResourceAccessTable.PlaneEntries[addr.ChannelID][addr.LocalFlashChipID][addr.DieID][addr.PlaneID].WaitingWriteRequests[currentRequest]) + 1;
}
myHandler.Flows[streamID].WriteQueue.AddLast(ir as InternalWriteRequest);
myFTL.ResourceAccessTable.ChannelEntries[addr.ChannelID].WaitingWriteCount++;
myFTL.ResourceAccessTable.DieEntries[addr.ChannelID][addr.LocalFlashChipID][addr.DieID].WaitingWriteCount++;
myFTL.ResourceAccessTable.PlaneEntries[addr.ChannelID][addr.LocalFlashChipID][addr.DieID][addr.PlaneID].WaitingWriteCount++;
if ((ir as InternalWriteRequest).UpdateRead != null)
{
addr = (ir as InternalWriteRequest).UpdateRead.TargetPageAddress;
if (!myFTL.ResourceAccessTable.ChannelEntries[addr.ChannelID].WaitingReadRequests.ContainsKey(currentRequest))
{
myFTL.ResourceAccessTable.ChannelEntries[addr.ChannelID].WaitingReadRequests.Add(currentRequest, 1);
}
else
{
myFTL.ResourceAccessTable.ChannelEntries[addr.ChannelID].WaitingReadRequests[currentRequest] = ((int)myFTL.ResourceAccessTable.ChannelEntries[addr.ChannelID].WaitingReadRequests[currentRequest]) + 1;
}
if (!myFTL.ResourceAccessTable.DieEntries[addr.ChannelID][addr.LocalFlashChipID][addr.DieID].WaitingReadRequests.ContainsKey(currentRequest))
{
myFTL.ResourceAccessTable.DieEntries[addr.ChannelID][addr.LocalFlashChipID][addr.DieID].WaitingReadRequests.Add(currentRequest, 1);
}
else
{
myFTL.ResourceAccessTable.DieEntries[addr.ChannelID][addr.LocalFlashChipID][addr.DieID].WaitingReadRequests[currentRequest]
= ((int)myFTL.ResourceAccessTable.DieEntries[addr.ChannelID][addr.LocalFlashChipID][addr.DieID].WaitingReadRequests[currentRequest]) + 1;
}
if (!myFTL.ResourceAccessTable.PlaneEntries[addr.ChannelID][addr.LocalFlashChipID][addr.DieID][addr.PlaneID].WaitingReadRequests.ContainsKey(currentRequest))
{
myFTL.ResourceAccessTable.PlaneEntries[addr.ChannelID][addr.LocalFlashChipID][addr.DieID][addr.PlaneID].WaitingReadRequests.Add(currentRequest, 1);
}
else
{
myFTL.ResourceAccessTable.PlaneEntries[addr.ChannelID][addr.LocalFlashChipID][addr.DieID][addr.PlaneID].WaitingReadRequests[currentRequest]
= ((int)myFTL.ResourceAccessTable.PlaneEntries[addr.ChannelID][addr.LocalFlashChipID][addr.DieID][addr.PlaneID].WaitingReadRequests[currentRequest]) + 1;
}
myHandler.Flows[streamID].ReadQueue.AddLast((ir as InternalWriteRequest).UpdateRead);
myFTL.ResourceAccessTable.ChannelEntries[addr.ChannelID].WaitingReadCount++;
myFTL.ResourceAccessTable.DieEntries[addr.ChannelID][addr.LocalFlashChipID][addr.DieID].WaitingReadCount++;
myFTL.ResourceAccessTable.PlaneEntries[addr.ChannelID][addr.LocalFlashChipID][addr.DieID][addr.PlaneID].WaitingReadCount++;
}
}
(myFTL.IOScheduler as IOSchedulerRPB).UpdateGCQueuePriority(ir.TargetPageAddress);
}
}
Locked = false;
myFTL.IOScheduler.Schedule((uint)myHandler.Flows[streamID].PriorityClass, streamID);
}