private void get_req_cache_unfiltered(ref int cpu_inst_cnt, ref string line, Char[] delim, ref string[] tokens, out Req rd_req, out Req wb_req)
{
Dbg.AssertPrint(tokens.Length == 6, "trace line = " + line);
ReqType req_type = (int.Parse(tokens[5]) == 0) ? ReqType.READ : ReqType.WRITE;
// Read-only requests
while (Config.proc.wb == false && req_type == ReqType.WRITE)
{
line = read_trace();
tokens = line.Split(delim);
req_type = (int.Parse(tokens[5]) == 0) ? ReqType.READ : ReqType.WRITE;
}
// Set instruction count b/w requests
ulong icount = ulong.Parse(tokens[0]);
if (cur_inst_count == 0)
{
cpu_inst_cnt = 0;
}
else
{
cpu_inst_cnt = (int)(icount - cur_inst_count);
Dbg.AssertPrint(cpu_inst_cnt >= 0, "Negative instruction count");
}
cur_inst_count = icount;
// Parse virtual address
ulong vaddr = ulong.Parse(tokens[2]);
vaddr = vaddr + (((ulong)pid) << 48);
rd_req = RequestPool.Depool();
rd_req.Set(pid, req_type, vaddr);
wb_req = null;
}
protected void RefreshBank(uint rankIdx, uint bankIdx)
{
List <Req> q = Mctrl.Refbankqs[rankIdx, bankIdx];
Req req = RequestPool.Depool();
req.Type = ReqType.REFRESH_BANK;
req.TsArrival = Cycles;
// Set up the refresh target address
MemAddr addr = new MemAddr();
addr.Reset();
addr.cid = Mctrl.cid;
addr.rid = rankIdx;
addr.bid = bankIdx;
addr.said = SaCountersPerbank[rankIdx, bankIdx];
req.Addr = addr;
q.Add(req);
// Update states
BankCounters[rankIdx]++;
if (BankCounters[rankIdx] == BankCounterMax)
{
BankCounters[rankIdx] = 0;
}
SaCountersPerbank[rankIdx, bankIdx]++;
if (SaCountersPerbank[rankIdx, bankIdx] == SaCounterMax)
{
SaCountersPerbank[rankIdx, bankIdx] = 0;
}
}
// This mode is used when we use the L2-cache filtered trace files with shared LLC enabled
private void get_llc_req(ref int cpu_inst_cnt, out Req rd_req, out Req wb_req)
{
// No buffered WB request from the previous line in the trace
if (buffered_wb_addr == -1)
{
string line = read_trace();
Char[] delim = new Char[] { ' ' };
string[] tokens = line.Split(delim);
// == Trace files that contain "clone" instructions ==
if (copy_trace_file)
{
// Skip all the other instructions
while (tokens[0] != "R" && tokens[0] != "C")
{
line = read_trace();
tokens = line.Split(delim);
}
get_req_clone(ref cpu_inst_cnt, ref line, delim, ref tokens, out rd_req, out wb_req);
}
// L2 cache filtered traces
else
{
cpu_inst_cnt = int.Parse(tokens[0]);
ulong rd_addr = ulong.Parse(tokens[1]);
rd_addr = rd_addr | (((ulong)pid) << 56);
rd_req = RequestPool.Depool();
rd_req.Set(pid, ReqType.READ, rd_addr);
wb_req = null;
if (!Config.proc.wb || tokens.Length == 2)
{
return;
}
Dbg.Assert(tokens.Length == 3);
ulong wb_addr = ulong.Parse(tokens[2]);
buffered_wb_addr = wb_addr | (((ulong)pid) << 56);
}
}
else
{
// Use the buffered WB request
cpu_inst_cnt = 0;
rd_req = RequestPool.Depool();
rd_req.Set(pid, ReqType.WRITE, (ulong)buffered_wb_addr);
wb_req = null;
// Clear the buffered wb
buffered_wb_addr = -1;
}
}
// Generate a new writeback request to memory from L2 dirty block eviction
public void gen_cache_wb_req(ulong wb_addr)
{
Req wb_req = RequestPool.Depool();
wb_req.Set(pid, ReqType.WRITE, wb_addr);
bool wb_merge = wb_q.Exists(x => x.BlockAddr == wb_req.BlockAddr);
if (!wb_merge)
{
addWB(wb_req);
}
else
{
RequestPool.Enpool(wb_req);
}
}
protected void RefreshRank(uint rankIdx)
{
List <Req> q = Mctrl.Refrankqs[rankIdx];
Req req = RequestPool.Depool();
req.Type = ReqType.REFRESH;
req.TsArrival = Cycles;
// Set up the refresh target address
MemAddr addr = new MemAddr();
addr.Reset();
addr.cid = Mctrl.cid;
addr.rid = rankIdx;
addr.said = SaCounters[rankIdx];
req.Addr = addr;
q.Add(req);
SaCounters[rankIdx]++;
if (SaCounters[rankIdx] == SaCounterMax)
{
SaCounters[rankIdx] = 0;
}
}
private void get_req_clone(ref int cpu_inst_cnt, ref string line, Char[] delim, ref string[] tokens, out Req rd_req, out Req wb_req)
{
string inst_type = tokens[0];
Dbg.Assert(copy_to_req_addr_q.Count == 0);
if (inst_type == "R")
{
cpu_inst_cnt = int.Parse(tokens[3]);
ulong rd_addr = ulong.Parse(tokens[1], System.Globalization.NumberStyles.HexNumber);
//ulong rd_add_dup = rd_addr;
rd_addr = rd_addr | (((ulong)pid) << 60);
rd_req = RequestPool.Depool();
rd_req.Set(pid, ReqType.READ, rd_addr);
ulong wb_addr = ulong.Parse(tokens[2], System.Globalization.NumberStyles.HexNumber);
wb_req = null;
if (wb_addr != 0)
{
wb_addr = wb_addr | (((ulong)pid) << 60);
if (Config.proc.llc_shared_cache_only)
{
buffered_wb_addr = wb_addr;
}
else if (Config.proc.wb)
{
wb_req = RequestPool.Depool();
wb_req.Set(pid, ReqType.WRITE, wb_addr);
}
}
}
else if (inst_type == "C")
{
cpu_inst_cnt = 1;
ulong dst_addr = ulong.Parse(tokens[1], System.Globalization.NumberStyles.HexNumber);
ulong src_addr = ulong.Parse(tokens[2], System.Globalization.NumberStyles.HexNumber);
dst_addr = dst_addr | (((ulong)pid) << 60);
src_addr = src_addr | (((ulong)pid) << 60);
// Convert the copy request into a list of RD/WR memory requests
if (Config.mctrl.copy_method == COPY.MEMCPY)
{
// Simply convert every memcopy to multiple read and write requests
Dbg.Assert(copy_to_req_addr_q.Count == 0);
// SRC and DST address
for (int i = 0; i < Config.mctrl.copy_gran; i++)
{
copy_to_req_addr_q.Enqueue(src_addr);
copy_to_req_addr_q.Enqueue(dst_addr);
// Increment by one cacheline
src_addr += 64;
dst_addr += 64;
}
cpu_inst_cnt = 1;
ulong rd_addr = copy_to_req_addr_q.Dequeue();
rd_req = RequestPool.Depool();
rd_req.Set(pid, ReqType.READ, rd_addr);
// For the destination addr, we need to mark it as dirty when the data is inserted back into the LLC.
rd_req.DirtyInsert = dirty_insert;
dirty_insert = !dirty_insert;
rd_req.CpyGenReq = Config.proc.stats_exclude_cpy;
wb_req = null;
Stat.banks[rd_req.Addr.cid, rd_req.Addr.rid, rd_req.Addr.bid].cmd_base_inter_sa.collect();
copy_to_req_ipc_deduction += 2;
}
else
{
rd_req = RequestPool.Depool();
rd_req.Set(pid, ReqType.COPY, src_addr);
wb_req = null;
}
}
else
{
rd_req = null;
wb_req = null;
Dbg.AssertPrint(inst_type == "C" || inst_type == "R", "Unable to fetch valid instruction.");
}
}
public void get_req(ref int cpu_inst_cnt, out Req rd_req, out Req wb_req)
{
if (copy_to_req_addr_q.Count > 0)
{
cpu_inst_cnt = 1;
ulong rd_addr = copy_to_req_addr_q.Dequeue();
rd_req = RequestPool.Depool();
rd_req.Set(pid, ReqType.READ, rd_addr);
// For the destination addr, we need to mark it as dirty when the data is inserted back into the LLC.
rd_req.DirtyInsert = dirty_insert;
dirty_insert = !dirty_insert;
rd_req.CpyGenReq = Config.proc.stats_exclude_cpy;
wb_req = null;
copy_to_req_ipc_deduction += 2;
return;
}
// Shared LLC mode on cache filtered traces
if (Config.proc.llc_shared_cache_only)
{
get_llc_req(ref cpu_inst_cnt, out rd_req, out wb_req);
return;
}
string line = read_trace();
Char[] delim = new Char[] { ' ' };
string[] tokens = line.Split(delim);
// The format of cache unfiltered traces is different
if (Config.proc.cache_enabled)
{
get_req_cache_unfiltered(ref cpu_inst_cnt, ref line, delim, ref tokens, out rd_req, out wb_req);
}
// traces with clones and sets
else if (Config.proc.b_read_rc_traces && copy_trace_file)
{
// Skip all the other instructions
while (tokens[0] != "R" && tokens[0] != "C")
{
line = read_trace();
tokens = line.Split(delim);
}
get_req_clone(ref cpu_inst_cnt, ref line, delim, ref tokens, out rd_req, out wb_req);
}
// Cache filtered
else
{
cpu_inst_cnt = int.Parse(tokens[0]);
ulong rd_addr = ulong.Parse(tokens[1]);
rd_addr = rd_addr | (((ulong)pid) << 56);
rd_req = RequestPool.Depool();
rd_req.Set(pid, ReqType.READ, rd_addr);
if (!Config.proc.wb || tokens.Length == 2)
{
wb_req = null;
return;
}
Dbg.Assert(tokens.Length == 3);
ulong wb_addr = ulong.Parse(tokens[2]);
wb_addr = wb_addr | (((ulong)pid) << 56);
wb_req = RequestPool.Depool();
wb_req.Set(pid, ReqType.WRITE, wb_addr);
}
}