public MemorySystem(uint id, uint megsOfMemory, ref Stream dramsim_log_)
{
dramsim_log = dramsim_log_;
ReturnReadData = null;
WriteDataDone = null;
currentClockCycle = 0;
if (Config.DEBUG_MEMORY)
{
DEBUG.WriteLine("===== MemorySystem " + systemID + " =====");
}
UInt64 megsOfStoragePerRank = ((((UInt64)Config.dram_config.NUM_ROWS * (Config.dram_config.NUM_COLS * Config.dram_config.DEVICE_WIDTH) * Config.dram_config.NUM_BANKS) * ((UInt64)Config.dram_config.JEDEC_DATA_BUS_BITS / Config.dram_config.DEVICE_WIDTH)) / 8) >> 20;
// If this is set, effectively override the number of ranks
if (megsOfMemory != 0)
{
Config.dram_config.NUM_RANKS = (uint)(megsOfMemory / megsOfStoragePerRank);
Config.dram_config.NUM_RANKS_LOG = Config.dram_config.log2(Config.dram_config.NUM_RANKS);
if (Config.dram_config.NUM_RANKS == 0)
{
if (Config.DEBUG_MEMORY)
{
DEBUG.WriteLine("WARNING: Cannot create memory system with " + megsOfMemory + "MB, defaulting to minimum size of " + megsOfStoragePerRank + "MB");
}
Config.dram_config.NUM_RANKS = 1;
}
}
Config.dram_config.NUM_DEVICES = Config.dram_config.JEDEC_DATA_BUS_BITS / Config.dram_config.DEVICE_WIDTH;
Config.dram_config.TOTAL_STORAGE = (Config.dram_config.NUM_RANKS * megsOfStoragePerRank);
if (Config.DEBUG_MEMORY)
{
DEBUG.WriteLine("CH. " + systemID + " TOTAL_STORAGE : " + Config.dram_config.TOTAL_STORAGE + "MB | " + Config.dram_config.NUM_RANKS + " Ranks | " + Config.dram_config.NUM_DEVICES + " Devices per rank");
}
memoryController = new MemoryController(this, dramsim_log);
// TODO: change to other vector constructor?
ranks = new List <Rank>();
for (int i = 0; i < Config.dram_config.NUM_RANKS; i++)
{
Rank r = new Rank(dramsim_log);
r.setId(i);
r.attachMemoryController(memoryController);
ranks.Add(r);
}
memoryController.attachRanks(ranks);
}