/// <summary>
/// Construct an L1Cache given a cache settings
/// </summary>
/// <param name="mb">reference to main memory block</param>
/// <param name="cs">instruction cache preferences</param>
public L1Cache(MemoryBlock mb, InstructionCachePreferences cs)
{
memBlock = mb;
//Only if this cache is enabled do we create all these items
if (cs.Enabled)
{
replaceStrategy = cs.ReplaceStrategy;
wordsPerBlock = cs.BlockSize / 4;
uint numberBlocks = cs.NumberBlocks;
uint blocksPerSet = cs.BlocksPerSet;
//determine the number of sets in the cache
uint numSets = numberBlocks / blocksPerSet;
//and allocate the collection of sets
Sets = new CacheSet[numSets];
//create and init each set
uint blockNumber = 0;
for (uint ii = 0; ii < numSets; ii++)
{
Sets[ii] = new CacheSet(mb, wordsPerBlock, blocksPerSet, blockNumber, replaceStrategy);
blockNumber += blocksPerSet;
} //for ii
} //if
ResetStats();
}//L1Cache ctor
public void SetSettings(CachePreferences cachePreferences)
{
InstructionCachePreferences cp = mInstructionCacheSummary ? cachePreferences.InstructionCachePreferences : cachePreferences.DataCachePreferences;
if (!cp.Enabled)
{
gbSummary.Enabled = false;
return;
}
lblCacheSize.Text = (cp.NumberBlocks * cp.BlockSize).ToString() + " Bytes";
lblBlockSize.Text = cp.BlockSize.ToString() + " Bytes";
lblNumBlocks.Text = cp.NumberBlocks.ToString();
if (cp.NumberBlocks == 1)
{
lblAssociativity.Text = "Fully Associative";
}
else if (cp.NumberBlocks == cp.BlocksPerSet)
{
lblAssociativity.Text = "Direct Mapped";
}
else
{
lblAssociativity.Text = string.Format("{0} way", cp.BlocksPerSet);
}
lblReplacement.Text = cp.ReplaceStrategy.ToString();
if (!mInstructionCacheSummary)
{
DataCachePreferences dcp = cachePreferences.DataCachePreferences;
lblAllocate.Text = dcp.AllocatePolicy.ToString();
lblWrite.Text = dcp.WritePolicy.ToString();
}
}//SetSettings
public CacheWizard(CachePreferences cachePreferences)
{
InitializeComponent();
mCachePreferences = cachePreferences;
rbUnifiedYes.Checked = mCachePreferences.UnifiedCache;
rbUnifiedNo.Checked = !mCachePreferences.UnifiedCache;
{
InstructionCachePreferences icp = mCachePreferences.InstructionCachePreferences;
rbICacheEnableYes.Checked = icp.Enabled;
rbICacheEnableNo.Checked = !icp.Enabled;
instructionCacheSize.Set(icp.BlockSize, icp.NumberBlocks);
instructionAssociativity.Set(icp.NumberBlocks, icp.BlocksPerSet);
instructionReplacementStrategy.ReplaceStrategyType = icp.ReplaceStrategy;
}
{
DataCachePreferences dcp = mCachePreferences.DataCachePreferences;
rbDCacheEnableYes.Checked = dcp.Enabled;
rbDCacheEnableNo.Checked = !dcp.Enabled;
dataCacheSize.Set(dcp.BlockSize, dcp.NumberBlocks);
dataAssociativity.Set(dcp.NumberBlocks, dcp.BlocksPerSet);
dataReplacementStrategy.ReplaceStrategyType = dcp.ReplaceStrategy;
writePolicy.WritePolicyType = dcp.WritePolicy;
allocatePolicy.AllocatePolicyType = dcp.AllocatePolicy;
}
}
