Router.cc revision 10447
110447Snilay@cs.wisc.edu#include "model/electrical/router/Router.h" 210447Snilay@cs.wisc.edu 310447Snilay@cs.wisc.edu#include <cmath> 410447Snilay@cs.wisc.edu#include <vector> 510447Snilay@cs.wisc.edu 610447Snilay@cs.wisc.edu#include "model/PortInfo.h" 710447Snilay@cs.wisc.edu#include "model/EventInfo.h" 810447Snilay@cs.wisc.edu#include "model/TransitionInfo.h" 910447Snilay@cs.wisc.edu#include "model/ModelGen.h" 1010447Snilay@cs.wisc.edu#include "model/std_cells/StdCellLib.h" 1110447Snilay@cs.wisc.edu#include "model/std_cells/StdCell.h" 1210447Snilay@cs.wisc.edu#include "model/electrical/router/RouterInputPort.h" 1310447Snilay@cs.wisc.edu#include "model/electrical/router/RouterSwitchAllocator.h" 1410447Snilay@cs.wisc.edu#include "model/timing_graph/ElectricalNet.h" 1510447Snilay@cs.wisc.edu 1610447Snilay@cs.wisc.edunamespace DSENT 1710447Snilay@cs.wisc.edu{ 1810447Snilay@cs.wisc.edu using std::sqrt; 1910447Snilay@cs.wisc.edu using std::vector; 2010447Snilay@cs.wisc.edu 2110447Snilay@cs.wisc.edu using LibUtil::castStringVector; 2210447Snilay@cs.wisc.edu using LibUtil::vectorToString; 2310447Snilay@cs.wisc.edu 2410447Snilay@cs.wisc.edu Router::Router(const String& instance_name_, const TechModel* tech_model_) 2510447Snilay@cs.wisc.edu : ElectricalModel(instance_name_, tech_model_) 2610447Snilay@cs.wisc.edu { 2710447Snilay@cs.wisc.edu initParameters(); 2810447Snilay@cs.wisc.edu initProperties(); 2910447Snilay@cs.wisc.edu } 3010447Snilay@cs.wisc.edu 3110447Snilay@cs.wisc.edu Router::~Router() 3210447Snilay@cs.wisc.edu {} 3310447Snilay@cs.wisc.edu 3410447Snilay@cs.wisc.edu void Router::initParameters() 3510447Snilay@cs.wisc.edu { 3610447Snilay@cs.wisc.edu addParameterName("NumberInputPorts"); 3710447Snilay@cs.wisc.edu addParameterName("NumberOutputPorts"); 3810447Snilay@cs.wisc.edu addParameterName("NumberBitsPerFlit"); 3910447Snilay@cs.wisc.edu addParameterName("NumberVirtualNetworks"); 4010447Snilay@cs.wisc.edu addParameterName("NumberVirtualChannelsPerVirtualNetwork"); 4110447Snilay@cs.wisc.edu addParameterName("NumberBuffersPerVirtualChannel"); 4210447Snilay@cs.wisc.edu // Spec for input port 4310447Snilay@cs.wisc.edu addParameterName("InputPort->BufferModel"); 4410447Snilay@cs.wisc.edu // Spec for crossbar 4510447Snilay@cs.wisc.edu addParameterName("CrossbarModel"); 4610447Snilay@cs.wisc.edu // Spec for switch allocator 4710447Snilay@cs.wisc.edu addParameterName("SwitchAllocator->ArbiterModel"); 4810447Snilay@cs.wisc.edu // Spec for clock tree 4910447Snilay@cs.wisc.edu addParameterName("ClockTreeModel"); 5010447Snilay@cs.wisc.edu addParameterName("ClockTree->NumberLevels"); 5110447Snilay@cs.wisc.edu addParameterName("ClockTree->WireLayer"); 5210447Snilay@cs.wisc.edu addParameterName("ClockTree->WireWidthMultiplier"); 5310447Snilay@cs.wisc.edu addParameterName("ClockTree->WireSpacingMultiplier", 3.0); 5410447Snilay@cs.wisc.edu return; 5510447Snilay@cs.wisc.edu } 5610447Snilay@cs.wisc.edu 5710447Snilay@cs.wisc.edu void Router::initProperties() 5810447Snilay@cs.wisc.edu { 5910447Snilay@cs.wisc.edu return; 6010447Snilay@cs.wisc.edu } 6110447Snilay@cs.wisc.edu 6210447Snilay@cs.wisc.edu Router* Router::clone() const 6310447Snilay@cs.wisc.edu { 6410447Snilay@cs.wisc.edu // TODO 6510447Snilay@cs.wisc.edu return NULL; 6610447Snilay@cs.wisc.edu } 6710447Snilay@cs.wisc.edu 6810447Snilay@cs.wisc.edu void Router::constructModel() 6910447Snilay@cs.wisc.edu { 7010447Snilay@cs.wisc.edu // Get parameters 7110447Snilay@cs.wisc.edu unsigned int number_input_ports = getParameter("NumberInputPorts").toUInt(); 7210447Snilay@cs.wisc.edu unsigned int number_output_ports = getParameter("NumberOutputPorts").toUInt(); 7310447Snilay@cs.wisc.edu unsigned int number_bits_per_flit = getParameter("NumberBitsPerFlit").toUInt(); 7410447Snilay@cs.wisc.edu 7510447Snilay@cs.wisc.edu ASSERT(number_input_ports > 0, "[Error] " + getInstanceName() + 7610447Snilay@cs.wisc.edu " -> Number of input ports must be > 0!"); 7710447Snilay@cs.wisc.edu ASSERT(number_output_ports > 0, "[Error] " + getInstanceName() + 7810447Snilay@cs.wisc.edu " -> Number of output ports must be > 0!"); 7910447Snilay@cs.wisc.edu ASSERT(number_bits_per_flit > 0, "[Error] " + getInstanceName() + 8010447Snilay@cs.wisc.edu " -> Number of bits per buffer must be > 0!"); 8110447Snilay@cs.wisc.edu 8210447Snilay@cs.wisc.edu // Create ports 8310447Snilay@cs.wisc.edu createInputPort("CK"); 8410447Snilay@cs.wisc.edu for(unsigned int i = 0; i < number_input_ports; ++i) 8510447Snilay@cs.wisc.edu { 8610447Snilay@cs.wisc.edu createInputPort("FlitIn" + (String)i, makeNetIndex(0, number_bits_per_flit-1)); 8710447Snilay@cs.wisc.edu } 8810447Snilay@cs.wisc.edu for(unsigned int i = 0; i < number_output_ports; ++i) 8910447Snilay@cs.wisc.edu { 9010447Snilay@cs.wisc.edu createOutputPort("FlitOut" + (String)i, makeNetIndex(0, number_bits_per_flit-1)); 9110447Snilay@cs.wisc.edu } 9210447Snilay@cs.wisc.edu 9310447Snilay@cs.wisc.edu // Create area, power, event results 9410447Snilay@cs.wisc.edu createElectricalResults(); 9510447Snilay@cs.wisc.edu getEventInfo("Idle")->setStaticTransitionInfos(); 9610447Snilay@cs.wisc.edu getEventInfo("Idle")->setTransitionInfo("CK", TransitionInfo(0.0, 1.0, 0.0)); 9710447Snilay@cs.wisc.edu 9810447Snilay@cs.wisc.edu createElectricalEventResult("ReadBuffer"); 9910447Snilay@cs.wisc.edu getEventInfo("ReadBuffer")->setTransitionInfo("CK", TransitionInfo(0.0, 1.0, 0.0)); 10010447Snilay@cs.wisc.edu createElectricalEventResult("WriteBuffer"); 10110447Snilay@cs.wisc.edu getEventInfo("WriteBuffer")->setTransitionInfo("CK", TransitionInfo(0.0, 1.0, 0.0)); 10210447Snilay@cs.wisc.edu for(unsigned int i = 1; i <= number_output_ports; ++i) 10310447Snilay@cs.wisc.edu { 10410447Snilay@cs.wisc.edu createElectricalEventResult("TraverseCrossbar->Multicast" + (String)i); 10510447Snilay@cs.wisc.edu getEventInfo("TraverseCrossbar->Multicast" + (String)i)->setTransitionInfo("CK", TransitionInfo(0.0, 1.0, 0.0)); 10610447Snilay@cs.wisc.edu } 10710447Snilay@cs.wisc.edu createElectricalEventResult("ArbitrateSwitch->ArbitrateStage1"); 10810447Snilay@cs.wisc.edu createElectricalEventResult("ArbitrateSwitch->ArbitrateStage2"); 10910447Snilay@cs.wisc.edu createElectricalEventResult("DistributeClock"); 11010447Snilay@cs.wisc.edu getEventInfo("DistributeClock")->setTransitionInfo("CK", TransitionInfo(0.0, 1.0, 0.0)); 11110447Snilay@cs.wisc.edu 11210447Snilay@cs.wisc.edu // Create intermediate nets 11310447Snilay@cs.wisc.edu createNet("PipelineReg0_In"); 11410447Snilay@cs.wisc.edu createNet("PipelineReg0_Out"); 11510447Snilay@cs.wisc.edu createNet("PipelineReg1_In"); 11610447Snilay@cs.wisc.edu createNet("PipelineReg1_Out"); 11710447Snilay@cs.wisc.edu for(unsigned int i = 0; i < number_output_ports; ++i) 11810447Snilay@cs.wisc.edu { 11910447Snilay@cs.wisc.edu createNet("PipelineReg2_In" + (String)i); 12010447Snilay@cs.wisc.edu createNet("PipelineReg2_Out" + (String)i); 12110447Snilay@cs.wisc.edu } 12210447Snilay@cs.wisc.edu 12310447Snilay@cs.wisc.edu createRouterInputPort(); 12410447Snilay@cs.wisc.edu createSwitchAllocator(); 12510447Snilay@cs.wisc.edu createVirtualChannelAllocator(); 12610447Snilay@cs.wisc.edu createCrossbar(); 12710447Snilay@cs.wisc.edu createClockTree(); 12810447Snilay@cs.wisc.edu createPipelineReg(); 12910447Snilay@cs.wisc.edu 13010447Snilay@cs.wisc.edu // Get generated numbers 13110447Snilay@cs.wisc.edu unsigned int number_crossbar_selects = getGenProperties()->get("Crossbar->NumberSelects"); 13210447Snilay@cs.wisc.edu 13310447Snilay@cs.wisc.edu // Add write buffer event 13410447Snilay@cs.wisc.edu getEventResult("WriteBuffer")->addSubResult(getSubInstance("PipelineReg0")->getEventResult("DFFD"), "PipelineReg0", number_bits_per_flit); 13510447Snilay@cs.wisc.edu getEventResult("WriteBuffer")->addSubResult(getSubInstance("PipelineReg0")->getEventResult("DFFQ"), "PipelineReg0", number_bits_per_flit); 13610447Snilay@cs.wisc.edu getEventResult("WriteBuffer")->addSubResult(getSubInstance("PipelineReg0")->getEventResult("CK"), "PipelineReg0", number_bits_per_flit); 13710447Snilay@cs.wisc.edu getEventResult("WriteBuffer")->addSubResult(getSubInstance("InputPort")->getEventResult("WriteBuffer"), "InputPort", 1.0); 13810447Snilay@cs.wisc.edu 13910447Snilay@cs.wisc.edu // Add read buffer event 14010447Snilay@cs.wisc.edu getEventResult("ReadBuffer")->addSubResult(getSubInstance("InputPort")->getEventResult("ReadBuffer"), "InputPort", 1.0); 14110447Snilay@cs.wisc.edu getEventResult("ReadBuffer")->addSubResult(getSubInstance("PipelineReg1")->getEventResult("DFFD"), "PipelineReg1", number_bits_per_flit); 14210447Snilay@cs.wisc.edu getEventResult("ReadBuffer")->addSubResult(getSubInstance("PipelineReg1")->getEventResult("DFFQ"), "PipelineReg1", number_bits_per_flit); 14310447Snilay@cs.wisc.edu getEventResult("ReadBuffer")->addSubResult(getSubInstance("PipelineReg1")->getEventResult("CK"), "PipelineReg1", number_bits_per_flit); 14410447Snilay@cs.wisc.edu 14510447Snilay@cs.wisc.edu // Add crossbar traversal event 14610447Snilay@cs.wisc.edu for(unsigned int i = 1; i <= number_output_ports; ++i) 14710447Snilay@cs.wisc.edu { 14810447Snilay@cs.wisc.edu Result* traverse_crossbar_event = getEventResult("TraverseCrossbar->Multicast" + (String)i); 14910447Snilay@cs.wisc.edu traverse_crossbar_event->addSubResult(getSubInstance("Crossbar_Sel_DFF")->getEventResult("DFFD"), "Crossbar_Sel_DFF", number_crossbar_selects); 15010447Snilay@cs.wisc.edu traverse_crossbar_event->addSubResult(getSubInstance("Crossbar_Sel_DFF")->getEventResult("DFFQ"), "Crossbar_Sel_DFF", number_crossbar_selects); 15110447Snilay@cs.wisc.edu traverse_crossbar_event->addSubResult(getSubInstance("Crossbar_Sel_DFF")->getEventResult("CK"), "Crossbar_Sel_DFF", number_crossbar_selects); 15210447Snilay@cs.wisc.edu traverse_crossbar_event->addSubResult(getSubInstance("Crossbar")->getEventResult("Multicast" + (String)i), "Crossbar", 1.0); 15310447Snilay@cs.wisc.edu for(unsigned int j = 0; j < i; ++j) 15410447Snilay@cs.wisc.edu { 15510447Snilay@cs.wisc.edu traverse_crossbar_event->addSubResult(getSubInstance("PipelineReg2_" + (String)j)->getEventResult("DFFD"), "PipelineReg2_" + (String)j, number_bits_per_flit); 15610447Snilay@cs.wisc.edu traverse_crossbar_event->addSubResult(getSubInstance("PipelineReg2_" + (String)j)->getEventResult("DFFQ"), "PipelineReg2_" + (String)j, number_bits_per_flit); 15710447Snilay@cs.wisc.edu traverse_crossbar_event->addSubResult(getSubInstance("PipelineReg2_" + (String)j)->getEventResult("CK"), "PipelineReg2_" + (String)j, number_bits_per_flit); 15810447Snilay@cs.wisc.edu } 15910447Snilay@cs.wisc.edu } 16010447Snilay@cs.wisc.edu 16110447Snilay@cs.wisc.edu // Add stage1 allocator arbitrate 16210447Snilay@cs.wisc.edu Result* arb_sw_stage1_event = getEventResult("ArbitrateSwitch->ArbitrateStage1"); 16310447Snilay@cs.wisc.edu arb_sw_stage1_event->addSubResult(getSubInstance("SwitchAllocator")->getEventResult("ArbitrateStage1"), "SwitchAllocator", 1.0); 16410447Snilay@cs.wisc.edu 16510447Snilay@cs.wisc.edu // Add stage2 allocator arbitrate 16610447Snilay@cs.wisc.edu Result* arb_sw_stage2_event = getEventResult("ArbitrateSwitch->ArbitrateStage2"); 16710447Snilay@cs.wisc.edu arb_sw_stage2_event->addSubResult(getSubInstance("SwitchAllocator")->getEventResult("ArbitrateStage2"), "SwitchAllocator", 1.0); 16810447Snilay@cs.wisc.edu 16910447Snilay@cs.wisc.edu // Add CK event 17010447Snilay@cs.wisc.edu getEventResult("DistributeClock")->addSubResult(getSubInstance("ClockTree")->getEventResult("Send"), "ClockTree", 1.0); 17110447Snilay@cs.wisc.edu return; 17210447Snilay@cs.wisc.edu } 17310447Snilay@cs.wisc.edu 17410447Snilay@cs.wisc.edu void Router::updateModel() 17510447Snilay@cs.wisc.edu { 17610447Snilay@cs.wisc.edu // Get parameters 17710447Snilay@cs.wisc.edu unsigned int number_output_ports = getParameter("NumberOutputPorts").toUInt(); 17810447Snilay@cs.wisc.edu 17910447Snilay@cs.wisc.edu // Update other components 18010447Snilay@cs.wisc.edu getSubInstance("PipelineReg0")->update(); 18110447Snilay@cs.wisc.edu getSubInstance("InputPort")->update(); 18210447Snilay@cs.wisc.edu getSubInstance("PipelineReg1")->update(); 18310447Snilay@cs.wisc.edu getSubInstance("Crossbar_Sel_DFF")->update(); 18410447Snilay@cs.wisc.edu getSubInstance("Crossbar")->update(); 18510447Snilay@cs.wisc.edu for(unsigned int i = 0; i < number_output_ports; ++i) 18610447Snilay@cs.wisc.edu { 18710447Snilay@cs.wisc.edu getSubInstance("PipelineReg2_" + (String)i)->update(); 18810447Snilay@cs.wisc.edu } 18910447Snilay@cs.wisc.edu getSubInstance("SwitchAllocator")->update(); 19010447Snilay@cs.wisc.edu 19110447Snilay@cs.wisc.edu // Update clock tree 19210447Snilay@cs.wisc.edu double total_clock_tree_cap = getNet("CK")->getTotalDownstreamCap(); 19310447Snilay@cs.wisc.edu double router_area = getAreaResult("Active")->calculateSum(); 19410447Snilay@cs.wisc.edu Model* clock_tree = getSubInstance("ClockTree"); 19510447Snilay@cs.wisc.edu clock_tree->setProperty("SitePitch", sqrt(router_area)); 19610447Snilay@cs.wisc.edu clock_tree->setProperty("TotalLoadCapPerBit", total_clock_tree_cap); 19710447Snilay@cs.wisc.edu clock_tree->update(); 19810447Snilay@cs.wisc.edu 19910447Snilay@cs.wisc.edu return; 20010447Snilay@cs.wisc.edu } 20110447Snilay@cs.wisc.edu 20210447Snilay@cs.wisc.edu void Router::propagateTransitionInfo() 20310447Snilay@cs.wisc.edu { 20410447Snilay@cs.wisc.edu // Update probability 20510447Snilay@cs.wisc.edu unsigned int number_output_ports = getParameter("NumberOutputPorts"); 20610447Snilay@cs.wisc.edu 20710447Snilay@cs.wisc.edu // Current event 20810447Snilay@cs.wisc.edu const String& current_event = getGenProperties()->get("UseModelEvent"); 20910447Snilay@cs.wisc.edu 21010447Snilay@cs.wisc.edu ElectricalModel* pipeline_reg0 = (ElectricalModel*)getSubInstance("PipelineReg0"); 21110447Snilay@cs.wisc.edu propagatePortTransitionInfo(pipeline_reg0, "D", "FlitIn0"); 21210447Snilay@cs.wisc.edu propagatePortTransitionInfo(pipeline_reg0, "CK", "CK"); 21310447Snilay@cs.wisc.edu pipeline_reg0->use(); 21410447Snilay@cs.wisc.edu 21510447Snilay@cs.wisc.edu ElectricalModel* input_port = (ElectricalModel*)getSubInstance("InputPort"); 21610447Snilay@cs.wisc.edu propagatePortTransitionInfo(input_port, "FlitIn", pipeline_reg0, "Q"); 21710447Snilay@cs.wisc.edu propagatePortTransitionInfo(input_port, "CK", "CK"); 21810447Snilay@cs.wisc.edu input_port->getGenProperties()->set("UseModelEvent", "ReadWrite"); 21910447Snilay@cs.wisc.edu input_port->use(); 22010447Snilay@cs.wisc.edu 22110447Snilay@cs.wisc.edu ElectricalModel* pipeline_reg1 = (ElectricalModel*)getSubInstance("PipelineReg1"); 22210447Snilay@cs.wisc.edu propagatePortTransitionInfo(pipeline_reg1, "D", "FlitIn0"); 22310447Snilay@cs.wisc.edu propagatePortTransitionInfo(pipeline_reg1, "CK", "CK"); 22410447Snilay@cs.wisc.edu pipeline_reg1->use(); 22510447Snilay@cs.wisc.edu 22610447Snilay@cs.wisc.edu ElectricalModel* crossbar_sel_dff = (ElectricalModel*)getSubInstance("Crossbar_Sel_DFF"); 22710447Snilay@cs.wisc.edu assignPortTransitionInfo(crossbar_sel_dff, "D", TransitionInfo()); 22810447Snilay@cs.wisc.edu propagatePortTransitionInfo(crossbar_sel_dff, "CK", "CK"); 22910447Snilay@cs.wisc.edu crossbar_sel_dff->use(); 23010447Snilay@cs.wisc.edu 23110447Snilay@cs.wisc.edu ElectricalModel* crossbar = (ElectricalModel*)getSubInstance("Crossbar"); 23210447Snilay@cs.wisc.edu bool is_crossbar_event = false; 23310447Snilay@cs.wisc.edu for(unsigned int i = 1; i <= number_output_ports; ++i) 23410447Snilay@cs.wisc.edu { 23510447Snilay@cs.wisc.edu if(current_event == ("TraverseCrossbar->Multicast" + (String)i)) 23610447Snilay@cs.wisc.edu { 23710447Snilay@cs.wisc.edu is_crossbar_event = true; 23810447Snilay@cs.wisc.edu // Assume the flit is sent from port 0 to port 0~i-1 23910447Snilay@cs.wisc.edu // Apply default transition info 24010447Snilay@cs.wisc.edu crossbar->applyTransitionInfo("Multicast" + (String)i); 24110447Snilay@cs.wisc.edu // Overwrite transition info 24210447Snilay@cs.wisc.edu propagatePortTransitionInfo(crossbar, "In0", "FlitIn0"); 24310447Snilay@cs.wisc.edu break; 24410447Snilay@cs.wisc.edu } 24510447Snilay@cs.wisc.edu } 24610447Snilay@cs.wisc.edu if(is_crossbar_event == false) 24710447Snilay@cs.wisc.edu { 24810447Snilay@cs.wisc.edu crossbar->applyTransitionInfo("Multicast1"); 24910447Snilay@cs.wisc.edu propagatePortTransitionInfo(crossbar, "In0", "FlitIn0"); 25010447Snilay@cs.wisc.edu } 25110447Snilay@cs.wisc.edu crossbar->use(); 25210447Snilay@cs.wisc.edu 25310447Snilay@cs.wisc.edu vector<ElectricalModel*> pipeline_reg2s(number_output_ports, NULL); 25410447Snilay@cs.wisc.edu for(unsigned int i = 0; i < number_output_ports; ++i) 25510447Snilay@cs.wisc.edu { 25610447Snilay@cs.wisc.edu pipeline_reg2s[i] = (ElectricalModel*)getSubInstance("PipelineReg2_" + (String)i); 25710447Snilay@cs.wisc.edu propagatePortTransitionInfo(pipeline_reg2s[i], "D", "FlitIn0"); 25810447Snilay@cs.wisc.edu propagatePortTransitionInfo(pipeline_reg2s[i], "CK", "CK"); 25910447Snilay@cs.wisc.edu pipeline_reg2s[i]->use(); 26010447Snilay@cs.wisc.edu } 26110447Snilay@cs.wisc.edu 26210447Snilay@cs.wisc.edu ElectricalModel* sw_allocator = (ElectricalModel*)getSubInstance("SwitchAllocator"); 26310447Snilay@cs.wisc.edu if(current_event == "ArbitrateSwitch->ArbitrateStage1") 26410447Snilay@cs.wisc.edu { 26510447Snilay@cs.wisc.edu sw_allocator->applyTransitionInfo("ArbitrateStage1"); 26610447Snilay@cs.wisc.edu } 26710447Snilay@cs.wisc.edu else if(current_event == "ArbitrateSwitch->ArbitrateStage2") 26810447Snilay@cs.wisc.edu { 26910447Snilay@cs.wisc.edu sw_allocator->applyTransitionInfo("ArbitrateStage2"); 27010447Snilay@cs.wisc.edu } 27110447Snilay@cs.wisc.edu else 27210447Snilay@cs.wisc.edu { 27310447Snilay@cs.wisc.edu sw_allocator->applyTransitionInfo("Idle"); 27410447Snilay@cs.wisc.edu } 27510447Snilay@cs.wisc.edu sw_allocator->use(); 27610447Snilay@cs.wisc.edu 27710447Snilay@cs.wisc.edu ElectricalModel* clock_tree = (ElectricalModel*)getSubInstance("ClockTree"); 27810447Snilay@cs.wisc.edu propagatePortTransitionInfo(clock_tree, "In", "CK"); 27910447Snilay@cs.wisc.edu clock_tree->use(); 28010447Snilay@cs.wisc.edu return; 28110447Snilay@cs.wisc.edu } 28210447Snilay@cs.wisc.edu 28310447Snilay@cs.wisc.edu void Router::createRouterInputPort() 28410447Snilay@cs.wisc.edu { 28510447Snilay@cs.wisc.edu // Get parameters 28610447Snilay@cs.wisc.edu unsigned int number_input_ports = getParameter("NumberInputPorts").toUInt(); 28710447Snilay@cs.wisc.edu unsigned int number_vns = getParameter("NumberVirtualNetworks").toUInt(); 28810447Snilay@cs.wisc.edu const String& number_vcs_per_vn = getParameter("NumberVirtualChannelsPerVirtualNetwork"); 28910447Snilay@cs.wisc.edu const String& number_bufs_per_vc = getParameter("NumberBuffersPerVirtualChannel"); 29010447Snilay@cs.wisc.edu unsigned int number_bits_per_flit = getParameter("NumberBitsPerFlit").toUInt(); 29110447Snilay@cs.wisc.edu const String& buffer_model = getParameter("InputPort->BufferModel"); 29210447Snilay@cs.wisc.edu 29310447Snilay@cs.wisc.edu // Init input port model 29410447Snilay@cs.wisc.edu const String& input_port_name = "InputPort"; 29510447Snilay@cs.wisc.edu RouterInputPort* input_port = new RouterInputPort(input_port_name, getTechModel()); 29610447Snilay@cs.wisc.edu input_port->setParameter("NumberVirtualNetworks", number_vns); 29710447Snilay@cs.wisc.edu input_port->setParameter("NumberVirtualChannelsPerVirtualNetwork", number_vcs_per_vn); 29810447Snilay@cs.wisc.edu input_port->setParameter("NumberBuffersPerVirtualChannel", number_bufs_per_vc); 29910447Snilay@cs.wisc.edu input_port->setParameter("NumberBitsPerFlit", number_bits_per_flit); 30010447Snilay@cs.wisc.edu input_port->setParameter("BufferModel", buffer_model); 30110447Snilay@cs.wisc.edu input_port->construct(); 30210447Snilay@cs.wisc.edu 30310447Snilay@cs.wisc.edu unsigned int number_input_port_outputs = input_port->getGenProperties()->get("NumberOutputs"); 30410447Snilay@cs.wisc.edu unsigned int number_input_port_addr_bits = input_port->getGenProperties()->get("NumberAddressBits"); 30510447Snilay@cs.wisc.edu getGenProperties()->set("InputPort->NumberOutputs", number_input_port_outputs); 30610447Snilay@cs.wisc.edu getGenProperties()->set("InputPort->NumberAddressBits", number_input_port_addr_bits); 30710447Snilay@cs.wisc.edu 30810447Snilay@cs.wisc.edu unsigned int total_number_vcs = input_port->getGenProperties()->get("TotalNumberVirtualChannels"); 30910447Snilay@cs.wisc.edu getGenProperties()->set("TotalNumberVirtualChannels", total_number_vcs); 31010447Snilay@cs.wisc.edu 31110447Snilay@cs.wisc.edu // Add the instance and the results 31210447Snilay@cs.wisc.edu addSubInstances(input_port, number_input_ports); 31310447Snilay@cs.wisc.edu addElectricalSubResults(input_port, number_input_ports); 31410447Snilay@cs.wisc.edu 31510447Snilay@cs.wisc.edu // Create connections 31610447Snilay@cs.wisc.edu createNet("InputPort_In", makeNetIndex(0, number_bits_per_flit-1)); 31710447Snilay@cs.wisc.edu createNet("InputPort_Out", makeNetIndex(0, number_bits_per_flit-1)); 31810447Snilay@cs.wisc.edu 31910447Snilay@cs.wisc.edu assignVirtualFanout("InputPort_In", "PipelineReg0_Out"); 32010447Snilay@cs.wisc.edu portConnect(input_port, "FlitIn", "InputPort_In"); 32110447Snilay@cs.wisc.edu portConnect(input_port, "CK", "CK"); 32210447Snilay@cs.wisc.edu portConnect(input_port, "FlitOut", "InputPort_Out"); 32310447Snilay@cs.wisc.edu assignVirtualFanin("PipelineReg1_In", "InputPort_Out"); 32410447Snilay@cs.wisc.edu 32510447Snilay@cs.wisc.edu return; 32610447Snilay@cs.wisc.edu } 32710447Snilay@cs.wisc.edu 32810447Snilay@cs.wisc.edu void Router::createVirtualChannelAllocator() 32910447Snilay@cs.wisc.edu {} 33010447Snilay@cs.wisc.edu 33110447Snilay@cs.wisc.edu void Router::createSwitchAllocator() 33210447Snilay@cs.wisc.edu { 33310447Snilay@cs.wisc.edu // Get parameters 33410447Snilay@cs.wisc.edu unsigned int number_input_ports = getParameter("NumberInputPorts").toUInt(); 33510447Snilay@cs.wisc.edu unsigned int number_output_ports = getParameter("NumberOutputPorts").toUInt(); 33610447Snilay@cs.wisc.edu unsigned int total_number_vcs = getGenProperties()->get("TotalNumberVirtualChannels").toUInt(); 33710447Snilay@cs.wisc.edu const String& arb_model = getParameter("SwitchAllocator->ArbiterModel"); 33810447Snilay@cs.wisc.edu 33910447Snilay@cs.wisc.edu // Init switch allocator model 34010447Snilay@cs.wisc.edu const String& sw_allocator_name = "SwitchAllocator"; 34110447Snilay@cs.wisc.edu RouterSwitchAllocator* sw_allocator = new RouterSwitchAllocator(sw_allocator_name, getTechModel()); 34210447Snilay@cs.wisc.edu sw_allocator->setParameter("NumberInputPorts", number_input_ports); 34310447Snilay@cs.wisc.edu sw_allocator->setParameter("NumberOutputPorts", number_output_ports); 34410447Snilay@cs.wisc.edu sw_allocator->setParameter("TotalNumberVirtualChannels", total_number_vcs); 34510447Snilay@cs.wisc.edu sw_allocator->setParameter("ArbiterModel", arb_model); 34610447Snilay@cs.wisc.edu sw_allocator->construct(); 34710447Snilay@cs.wisc.edu 34810447Snilay@cs.wisc.edu // Add the instance and the results 34910447Snilay@cs.wisc.edu addSubInstances(sw_allocator, 1.0); 35010447Snilay@cs.wisc.edu addElectricalSubResults(sw_allocator, 1.0); 35110447Snilay@cs.wisc.edu 35210447Snilay@cs.wisc.edu // Create connections (currently connect CK only) 35310447Snilay@cs.wisc.edu portConnect(sw_allocator, "CK", "CK"); 35410447Snilay@cs.wisc.edu return; 35510447Snilay@cs.wisc.edu } 35610447Snilay@cs.wisc.edu 35710447Snilay@cs.wisc.edu void Router::createCrossbar() 35810447Snilay@cs.wisc.edu { 35910447Snilay@cs.wisc.edu // Get parameters 36010447Snilay@cs.wisc.edu const String& crossbar_model = getParameter("CrossbarModel"); 36110447Snilay@cs.wisc.edu unsigned int number_input_ports = getParameter("NumberInputPorts").toUInt(); 36210447Snilay@cs.wisc.edu unsigned int number_output_ports = getParameter("NumberOutputPorts").toUInt(); 36310447Snilay@cs.wisc.edu unsigned int number_bits_per_flit = getParameter("NumberBitsPerFlit").toUInt(); 36410447Snilay@cs.wisc.edu unsigned int number_input_port_outputs = getGenProperties()->get("InputPort->NumberOutputs").toUInt(); 36510447Snilay@cs.wisc.edu 36610447Snilay@cs.wisc.edu unsigned int number_crossbar_inputs = number_input_port_outputs * number_input_ports; 36710447Snilay@cs.wisc.edu unsigned int number_crossbar_outputs = number_output_ports; 36810447Snilay@cs.wisc.edu getGenProperties()->set("Crossbar->NumberInputs", number_crossbar_inputs); 36910447Snilay@cs.wisc.edu getGenProperties()->set("Crossbar->NumberOutputs", number_crossbar_outputs); 37010447Snilay@cs.wisc.edu 37110447Snilay@cs.wisc.edu // Init crossbar model 37210447Snilay@cs.wisc.edu const String& crossbar_name = "Crossbar"; 37310447Snilay@cs.wisc.edu ElectricalModel* crossbar = ModelGen::createCrossbar(crossbar_model, crossbar_name, getTechModel()); 37410447Snilay@cs.wisc.edu crossbar->setParameter("NumberInputs", number_crossbar_inputs); 37510447Snilay@cs.wisc.edu crossbar->setParameter("NumberOutputs", number_crossbar_outputs); 37610447Snilay@cs.wisc.edu crossbar->setParameter("NumberBits", number_bits_per_flit); 37710447Snilay@cs.wisc.edu crossbar->setParameter("BitDuplicate", "TRUE"); 37810447Snilay@cs.wisc.edu crossbar->construct(); 37910447Snilay@cs.wisc.edu 38010447Snilay@cs.wisc.edu unsigned int number_crossbar_selects = crossbar->getGenProperties()->get("NumberSelectsPerPort"); 38110447Snilay@cs.wisc.edu getGenProperties()->set("Crossbar->NumberSelects", number_crossbar_selects); 38210447Snilay@cs.wisc.edu 38310447Snilay@cs.wisc.edu // Init DFF for crossbar selections 38410447Snilay@cs.wisc.edu const String& crossbar_sel_dff_name = "Crossbar_Sel_DFF"; 38510447Snilay@cs.wisc.edu StdCell* crossbar_sel_dff = getTechModel()->getStdCellLib()->createStdCell("DFFQ", crossbar_sel_dff_name); 38610447Snilay@cs.wisc.edu crossbar_sel_dff->construct(); 38710447Snilay@cs.wisc.edu 38810447Snilay@cs.wisc.edu // Add instances and results 38910447Snilay@cs.wisc.edu addSubInstances(crossbar, 1.0); 39010447Snilay@cs.wisc.edu addElectricalSubResults(crossbar, 1.0); 39110447Snilay@cs.wisc.edu 39210447Snilay@cs.wisc.edu addSubInstances(crossbar_sel_dff, number_crossbar_outputs * number_crossbar_selects); 39310447Snilay@cs.wisc.edu addElectricalSubResults(crossbar_sel_dff, number_crossbar_outputs * number_crossbar_selects); 39410447Snilay@cs.wisc.edu 39510447Snilay@cs.wisc.edu // Create connections 39610447Snilay@cs.wisc.edu createNet("Crossbar_Sel_DFF_Out"); 39710447Snilay@cs.wisc.edu for(unsigned int i = 0; i < number_crossbar_outputs; ++i) 39810447Snilay@cs.wisc.edu { 39910447Snilay@cs.wisc.edu for(unsigned int j = 0; j < number_crossbar_selects; ++j) 40010447Snilay@cs.wisc.edu { 40110447Snilay@cs.wisc.edu createNet(String::format("Crossbar_Sel%d_%d", i, j)); 40210447Snilay@cs.wisc.edu } 40310447Snilay@cs.wisc.edu createNet("Crossbar_Out" + (String)i, makeNetIndex(0, number_bits_per_flit-1)); 40410447Snilay@cs.wisc.edu } 40510447Snilay@cs.wisc.edu for(unsigned int i = 0; i < number_crossbar_inputs; ++i) 40610447Snilay@cs.wisc.edu { 40710447Snilay@cs.wisc.edu createNet("Crossbar_In" + (String)i, makeNetIndex(0, number_bits_per_flit-1)); 40810447Snilay@cs.wisc.edu } 40910447Snilay@cs.wisc.edu 41010447Snilay@cs.wisc.edu for(unsigned int i = 0; i < number_crossbar_selects; ++i) 41110447Snilay@cs.wisc.edu { 41210447Snilay@cs.wisc.edu portConnect(crossbar_sel_dff, "CK", "CK"); 41310447Snilay@cs.wisc.edu } 41410447Snilay@cs.wisc.edu portConnect(crossbar_sel_dff, "Q", "Crossbar_Sel_DFF_Out"); 41510447Snilay@cs.wisc.edu for(unsigned int i = 0; i < number_crossbar_inputs; ++i) 41610447Snilay@cs.wisc.edu { 41710447Snilay@cs.wisc.edu assignVirtualFanout("Crossbar_In" + (String)i, "PipelineReg1_Out"); 41810447Snilay@cs.wisc.edu portConnect(crossbar, "In" + (String)i, "Crossbar_In" + (String)i); 41910447Snilay@cs.wisc.edu } 42010447Snilay@cs.wisc.edu for(unsigned int i = 0; i < number_crossbar_outputs; ++i) 42110447Snilay@cs.wisc.edu { 42210447Snilay@cs.wisc.edu for(unsigned int j = 0; j < number_crossbar_selects; ++j) 42310447Snilay@cs.wisc.edu { 42410447Snilay@cs.wisc.edu assignVirtualFanout(String::format("Crossbar_Sel%d_%d", i, j), "Crossbar_Sel_DFF_Out"); 42510447Snilay@cs.wisc.edu portConnect(crossbar, String::format("Sel%d_%d", i, j), String::format("Crossbar_Sel%d_%d", i, j)); 42610447Snilay@cs.wisc.edu } 42710447Snilay@cs.wisc.edu portConnect(crossbar, "Out" + (String)i, "Crossbar_Out" + (String)i); 42810447Snilay@cs.wisc.edu assignVirtualFanin("PipelineReg2_In" + (String)i, "Crossbar_Out" + (String)i); 42910447Snilay@cs.wisc.edu } 43010447Snilay@cs.wisc.edu 43110447Snilay@cs.wisc.edu return; 43210447Snilay@cs.wisc.edu } 43310447Snilay@cs.wisc.edu 43410447Snilay@cs.wisc.edu void Router::createPipelineReg() 43510447Snilay@cs.wisc.edu { 43610447Snilay@cs.wisc.edu // Get parameters 43710447Snilay@cs.wisc.edu unsigned int number_input_ports = getParameter("NumberInputPorts").toUInt(); 43810447Snilay@cs.wisc.edu unsigned int number_output_ports = getParameter("NumberOutputPorts").toUInt(); 43910447Snilay@cs.wisc.edu unsigned int number_bits_per_flit = getParameter("NumberBitsPerFlit").toUInt(); 44010447Snilay@cs.wisc.edu unsigned int number_crossbar_inputs = getGenProperties()->get("Crossbar->NumberInputs"); 44110447Snilay@cs.wisc.edu 44210447Snilay@cs.wisc.edu // Init pipeline reg model 44310447Snilay@cs.wisc.edu // First stage: from router input to input port 44410447Snilay@cs.wisc.edu const String& pipeline_reg0_name = "PipelineReg0"; 44510447Snilay@cs.wisc.edu StdCell* pipeline_reg0 = getTechModel()->getStdCellLib()->createStdCell("DFFQ", pipeline_reg0_name); 44610447Snilay@cs.wisc.edu pipeline_reg0->construct(); 44710447Snilay@cs.wisc.edu // Second stage: from input port to crossbar 44810447Snilay@cs.wisc.edu const String& pipeline_reg1_name = "PipelineReg1"; 44910447Snilay@cs.wisc.edu StdCell* pipeline_reg1 = getTechModel()->getStdCellLib()->createStdCell("DFFQ", pipeline_reg1_name); 45010447Snilay@cs.wisc.edu pipeline_reg1->construct(); 45110447Snilay@cs.wisc.edu 45210447Snilay@cs.wisc.edu // Third stage: from crossbar to router output 45310447Snilay@cs.wisc.edu vector<StdCell*> pipeline_reg2s(number_output_ports, (StdCell*)NULL); 45410447Snilay@cs.wisc.edu vector<String> pipeline_reg2_names(number_output_ports, ""); 45510447Snilay@cs.wisc.edu for(unsigned int i = 0; i < number_output_ports; ++i) 45610447Snilay@cs.wisc.edu { 45710447Snilay@cs.wisc.edu pipeline_reg2_names[i] = "PipelineReg2_" + (String)i; 45810447Snilay@cs.wisc.edu pipeline_reg2s[i] = getTechModel()->getStdCellLib()->createStdCell("DFFQ", pipeline_reg2_names[i]); 45910447Snilay@cs.wisc.edu pipeline_reg2s[i]->construct(); 46010447Snilay@cs.wisc.edu } 46110447Snilay@cs.wisc.edu 46210447Snilay@cs.wisc.edu // Add instances and results 46310447Snilay@cs.wisc.edu addSubInstances(pipeline_reg0, number_input_ports * number_bits_per_flit); 46410447Snilay@cs.wisc.edu addElectricalSubResults(pipeline_reg0, number_input_ports * number_bits_per_flit); 46510447Snilay@cs.wisc.edu 46610447Snilay@cs.wisc.edu addSubInstances(pipeline_reg1, number_crossbar_inputs * number_bits_per_flit); 46710447Snilay@cs.wisc.edu addElectricalSubResults(pipeline_reg1, number_crossbar_inputs * number_bits_per_flit); 46810447Snilay@cs.wisc.edu 46910447Snilay@cs.wisc.edu for(unsigned int i = 0; i < number_output_ports; ++i) 47010447Snilay@cs.wisc.edu { 47110447Snilay@cs.wisc.edu addSubInstances(pipeline_reg2s[i], number_bits_per_flit); 47210447Snilay@cs.wisc.edu addElectricalSubResults(pipeline_reg2s[i], number_bits_per_flit); 47310447Snilay@cs.wisc.edu } 47410447Snilay@cs.wisc.edu 47510447Snilay@cs.wisc.edu // Create data connections 47610447Snilay@cs.wisc.edu for(unsigned int i = 0; i < number_input_ports; ++i) 47710447Snilay@cs.wisc.edu { 47810447Snilay@cs.wisc.edu assignVirtualFanin("PipelineReg0_In", "FlitIn" + (String)i); 47910447Snilay@cs.wisc.edu } 48010447Snilay@cs.wisc.edu portConnect(pipeline_reg0, "D", "PipelineReg0_In"); 48110447Snilay@cs.wisc.edu portConnect(pipeline_reg0, "Q", "PipelineReg0_Out"); 48210447Snilay@cs.wisc.edu portConnect(pipeline_reg1, "D", "PipelineReg1_In"); 48310447Snilay@cs.wisc.edu portConnect(pipeline_reg1, "Q", "PipelineReg1_Out"); 48410447Snilay@cs.wisc.edu for(unsigned int i = 0; i < number_output_ports; ++i) 48510447Snilay@cs.wisc.edu { 48610447Snilay@cs.wisc.edu portConnect(pipeline_reg2s[i], "D", "PipelineReg2_In" + (String)i); 48710447Snilay@cs.wisc.edu portConnect(pipeline_reg2s[i], "Q", "PipelineReg2_Out" + (String)i); 48810447Snilay@cs.wisc.edu assignVirtualFanout("FlitOut" + (String)i, "PipelineReg2_Out" + (String)i); 48910447Snilay@cs.wisc.edu } 49010447Snilay@cs.wisc.edu 49110447Snilay@cs.wisc.edu // Create CK connections 49210447Snilay@cs.wisc.edu for(unsigned int n = 0; n < number_bits_per_flit; ++n) 49310447Snilay@cs.wisc.edu { 49410447Snilay@cs.wisc.edu for(unsigned int i = 0; i < number_input_ports; ++i) 49510447Snilay@cs.wisc.edu { 49610447Snilay@cs.wisc.edu portConnect(pipeline_reg0, "CK", "CK"); 49710447Snilay@cs.wisc.edu } 49810447Snilay@cs.wisc.edu for(unsigned int i = 0; i < number_crossbar_inputs; ++i) 49910447Snilay@cs.wisc.edu { 50010447Snilay@cs.wisc.edu portConnect(pipeline_reg1, "CK", "CK"); 50110447Snilay@cs.wisc.edu } 50210447Snilay@cs.wisc.edu for(unsigned int i = 0; i < number_output_ports; ++i) 50310447Snilay@cs.wisc.edu { 50410447Snilay@cs.wisc.edu portConnect(pipeline_reg2s[i], "CK", "CK"); 50510447Snilay@cs.wisc.edu } 50610447Snilay@cs.wisc.edu } 50710447Snilay@cs.wisc.edu return; 50810447Snilay@cs.wisc.edu } 50910447Snilay@cs.wisc.edu 51010447Snilay@cs.wisc.edu void Router::createClockTree() 51110447Snilay@cs.wisc.edu { 51210447Snilay@cs.wisc.edu // Get parameters 51310447Snilay@cs.wisc.edu const String& clock_tree_model = getParameter("ClockTreeModel"); 51410447Snilay@cs.wisc.edu const String& clock_tree_number_levels = getParameter("ClockTree->NumberLevels"); 51510447Snilay@cs.wisc.edu const String& clock_tree_wire_layer = getParameter("ClockTree->WireLayer"); 51610447Snilay@cs.wisc.edu const String& clock_tree_wire_width_multiplier = getParameter("ClockTree->WireWidthMultiplier"); 51710447Snilay@cs.wisc.edu const String& clock_tree_wire_spacing_multiplier = getParameter("ClockTree->WireSpacingMultiplier"); 51810447Snilay@cs.wisc.edu 51910447Snilay@cs.wisc.edu // Init clock tree model 52010447Snilay@cs.wisc.edu const String& clock_tree_name = "ClockTree"; 52110447Snilay@cs.wisc.edu ElectricalModel* clock_tree = (ElectricalModel*)ModelGen::createModel(clock_tree_model, clock_tree_name, getTechModel()); 52210447Snilay@cs.wisc.edu clock_tree->setParameter("NumberLevels", clock_tree_number_levels); 52310447Snilay@cs.wisc.edu clock_tree->setParameter("NumberBits", 1); 52410447Snilay@cs.wisc.edu clock_tree->setParameter("WireLayer", clock_tree_wire_layer); 52510447Snilay@cs.wisc.edu clock_tree->setParameter("WireWidthMultiplier", clock_tree_wire_width_multiplier); 52610447Snilay@cs.wisc.edu clock_tree->setParameter("WireSpacingMultiplier", clock_tree_wire_spacing_multiplier); 52710447Snilay@cs.wisc.edu clock_tree->construct(); 52810447Snilay@cs.wisc.edu 52910447Snilay@cs.wisc.edu // Add instances and results 53010447Snilay@cs.wisc.edu addSubInstances(clock_tree, 1.0); 53110447Snilay@cs.wisc.edu addElectricalSubResults(clock_tree, 1.0); 53210447Snilay@cs.wisc.edu 53310447Snilay@cs.wisc.edu return; 53410447Snilay@cs.wisc.edu } 53510447Snilay@cs.wisc.edu} // namespace DSENT 53610447Snilay@cs.wisc.edu 537