private static Cmd base_cmd_issue(ReqType r, MemAddr a, Cmd cmd, NodeMachine bank, NodeMachine subarray)
{
Dbg.Assert(bank.OpenChildrenId.Count <= 1);
// closed bank
if (bank.OpenChildrenId.Count == 0)
{
cmd.Type = CmdType.ACT;
return(cmd);
}
// subarray-miss
if (bank.OpenChildrenId[0] != a.said)
{
cmd.Type = CmdType.PRE_BANK;
return(cmd);
}
// row-miss
if (subarray.OpenChildrenId[0] != a.rowid)
{
cmd.Type = CmdType.PRE_BANK;
return(cmd);
}
// row-hit
cmd.Type = r == ReqType.READ ? CmdType.RD : CmdType.WR;
return(cmd);
}
private static Cmd salp1_cmd_issue(ReqType r, MemAddr a, Cmd cmd, NodeMachine bank, NodeMachine subarray)
{
Dbg.Assert(bank.OpenChildrenId.Count <= 1);
// closed bank
if (bank.OpenChildrenId.Count == 0)
{
cmd.Type = CmdType.ACT;
return(cmd);
}
// subarray-miss
if (bank.OpenChildrenId[0] != a.said)
{
cmd.Type = CmdType.PRE_SA;
cmd.Addr.said = (uint)bank.OpenChildrenId[0]; // close the opened sibling
return(cmd);
}
// row-miss
if (subarray.OpenChildrenId[0] != a.rowid)
{
cmd.Type = CmdType.PRE_SA;
return(cmd);
}
// row-hit
cmd.Type = r == ReqType.READ ? CmdType.RD : CmdType.WR;
return(cmd);
}
private static Cmd masa_cmd_issue(ReqType r, MemAddr a, Cmd cmd, NodeMachine bank, NodeMachine subarray)
{
var open_said = bank.OpenChildrenId;
// subarray-miss
if (!open_said.Contains(a.said))
{
cmd.Type = CmdType.ACT;
return(cmd);
}
// row-miss
if (!subarray.OpenChildrenId.Contains(a.rowid))
{
cmd.Type = CmdType.PRE_SA;
return(cmd);
}
// not the most-recently-opened subarray
if (open_said[0] != a.said && !Config.mctrl.b_piggyback_SEL_SA)
{
cmd.Type = CmdType.SEL_SA;
return(cmd);
}
// row-hit
cmd.Type = r == ReqType.READ ? CmdType.RD : CmdType.WR;
return(cmd);
}
private static Cmd salp2_cmd_issue(ReqType r, MemAddr a, Cmd cmd, NodeMachine bank, NodeMachine subarray)
{
Dbg.Assert(bank.OpenChildrenId.Count <= 2);
// closed bank
if (bank.OpenChildrenId.Count == 0)
{
cmd.Type = CmdType.ACT;
return(cmd);
}
// open bank (one subarray)
if (bank.OpenChildrenId.Count == 1)
{
// subarray-miss
if (bank.OpenChildrenId[0] != a.said)
{
cmd.Type = CmdType.ACT;
return(cmd);
}
// row-miss
if (subarray.OpenChildrenId[0] != a.rowid)
{
cmd.Type = CmdType.PRE_SA;
return(cmd);
}
// row-hit
cmd.Type = r == ReqType.READ ? CmdType.RD : CmdType.WR;
return(cmd);
}
// open bank (two subarrays)
// all subarray-miss
if (!bank.OpenChildrenId.Contains(a.said))
{
cmd.Type = CmdType.PRE_SA;
cmd.Addr.said = (uint)bank.OpenChildrenId[1]; // close least-recently-opened subarray
return(cmd);
}
// not the most-recently-opened subarray
if (bank.OpenChildrenId[0] != a.said)
{
cmd.Type = CmdType.PRE_SA;
cmd.Addr.said = (uint)bank.OpenChildrenId[1]; // close least-recently-opened subarray
return(cmd);
}
// row-miss
if (subarray.OpenChildrenId[0] != a.rowid)
{
cmd.Type = CmdType.PRE_SA;
return(cmd);
}
// row-hit
cmd.Type = r == ReqType.READ ? CmdType.RD : CmdType.WR;
return(cmd);
}
public NodeMachine(NodeMachine parent, int level, uint id, uint[] fanOutArray)
{
Parent = parent;
this.level = (Level)level;
this.id = id;
// initialize open children
OpenChildrenId = new List <ulong>();
// initialize children
if (level == (int)Level.SUBARRAY)
{
Children = null; // a subarray has *NO* child objects
return;
}
Children = new NodeMachine[fanOutArray[level + 1]];
for (uint i = 0; i < Children.Length; i++)
{
Children[i] = new NodeMachine(this, level + 1, i, fanOutArray);
}
}
public DRAMState(uint cid, uint[] fanOutArray, MemCtrl.MemCtrl mctrl)
{
_channel = new NodeMachine(null, 0, cid, fanOutArray);
}