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-rw-r--r--ext/dsent/model/electrical/router/Router.cc536
1 files changed, 536 insertions, 0 deletions
diff --git a/ext/dsent/model/electrical/router/Router.cc b/ext/dsent/model/electrical/router/Router.cc
new file mode 100644
index 000000000..c079bd1d5
--- /dev/null
+++ b/ext/dsent/model/electrical/router/Router.cc
@@ -0,0 +1,536 @@
+#include "model/electrical/router/Router.h"
+
+#include <cmath>
+#include <vector>
+
+#include "model/PortInfo.h"
+#include "model/EventInfo.h"
+#include "model/TransitionInfo.h"
+#include "model/ModelGen.h"
+#include "model/std_cells/StdCellLib.h"
+#include "model/std_cells/StdCell.h"
+#include "model/electrical/router/RouterInputPort.h"
+#include "model/electrical/router/RouterSwitchAllocator.h"
+#include "model/timing_graph/ElectricalNet.h"
+
+namespace DSENT
+{
+ using std::sqrt;
+ using std::vector;
+
+ using LibUtil::castStringVector;
+ using LibUtil::vectorToString;
+
+ Router::Router(const String& instance_name_, const TechModel* tech_model_)
+ : ElectricalModel(instance_name_, tech_model_)
+ {
+ initParameters();
+ initProperties();
+ }
+
+ Router::~Router()
+ {}
+
+ void Router::initParameters()
+ {
+ addParameterName("NumberInputPorts");
+ addParameterName("NumberOutputPorts");
+ addParameterName("NumberBitsPerFlit");
+ addParameterName("NumberVirtualNetworks");
+ addParameterName("NumberVirtualChannelsPerVirtualNetwork");
+ addParameterName("NumberBuffersPerVirtualChannel");
+ // Spec for input port
+ addParameterName("InputPort->BufferModel");
+ // Spec for crossbar
+ addParameterName("CrossbarModel");
+ // Spec for switch allocator
+ addParameterName("SwitchAllocator->ArbiterModel");
+ // Spec for clock tree
+ addParameterName("ClockTreeModel");
+ addParameterName("ClockTree->NumberLevels");
+ addParameterName("ClockTree->WireLayer");
+ addParameterName("ClockTree->WireWidthMultiplier");
+ addParameterName("ClockTree->WireSpacingMultiplier", 3.0);
+ return;
+ }
+
+ void Router::initProperties()
+ {
+ return;
+ }
+
+ Router* Router::clone() const
+ {
+ // TODO
+ return NULL;
+ }
+
+ void Router::constructModel()
+ {
+ // Get parameters
+ unsigned int number_input_ports = getParameter("NumberInputPorts").toUInt();
+ unsigned int number_output_ports = getParameter("NumberOutputPorts").toUInt();
+ unsigned int number_bits_per_flit = getParameter("NumberBitsPerFlit").toUInt();
+
+ ASSERT(number_input_ports > 0, "[Error] " + getInstanceName() +
+ " -> Number of input ports must be > 0!");
+ ASSERT(number_output_ports > 0, "[Error] " + getInstanceName() +
+ " -> Number of output ports must be > 0!");
+ ASSERT(number_bits_per_flit > 0, "[Error] " + getInstanceName() +
+ " -> Number of bits per buffer must be > 0!");
+
+ // Create ports
+ createInputPort("CK");
+ for(unsigned int i = 0; i < number_input_ports; ++i)
+ {
+ createInputPort("FlitIn" + (String)i, makeNetIndex(0, number_bits_per_flit-1));
+ }
+ for(unsigned int i = 0; i < number_output_ports; ++i)
+ {
+ createOutputPort("FlitOut" + (String)i, makeNetIndex(0, number_bits_per_flit-1));
+ }
+
+ // Create area, power, event results
+ createElectricalResults();
+ getEventInfo("Idle")->setStaticTransitionInfos();
+ getEventInfo("Idle")->setTransitionInfo("CK", TransitionInfo(0.0, 1.0, 0.0));
+
+ createElectricalEventResult("ReadBuffer");
+ getEventInfo("ReadBuffer")->setTransitionInfo("CK", TransitionInfo(0.0, 1.0, 0.0));
+ createElectricalEventResult("WriteBuffer");
+ getEventInfo("WriteBuffer")->setTransitionInfo("CK", TransitionInfo(0.0, 1.0, 0.0));
+ for(unsigned int i = 1; i <= number_output_ports; ++i)
+ {
+ createElectricalEventResult("TraverseCrossbar->Multicast" + (String)i);
+ getEventInfo("TraverseCrossbar->Multicast" + (String)i)->setTransitionInfo("CK", TransitionInfo(0.0, 1.0, 0.0));
+ }
+ createElectricalEventResult("ArbitrateSwitch->ArbitrateStage1");
+ createElectricalEventResult("ArbitrateSwitch->ArbitrateStage2");
+ createElectricalEventResult("DistributeClock");
+ getEventInfo("DistributeClock")->setTransitionInfo("CK", TransitionInfo(0.0, 1.0, 0.0));
+
+ // Create intermediate nets
+ createNet("PipelineReg0_In");
+ createNet("PipelineReg0_Out");
+ createNet("PipelineReg1_In");
+ createNet("PipelineReg1_Out");
+ for(unsigned int i = 0; i < number_output_ports; ++i)
+ {
+ createNet("PipelineReg2_In" + (String)i);
+ createNet("PipelineReg2_Out" + (String)i);
+ }
+
+ createRouterInputPort();
+ createSwitchAllocator();
+ createVirtualChannelAllocator();
+ createCrossbar();
+ createClockTree();
+ createPipelineReg();
+
+ // Get generated numbers
+ unsigned int number_crossbar_selects = getGenProperties()->get("Crossbar->NumberSelects");
+
+ // Add write buffer event
+ getEventResult("WriteBuffer")->addSubResult(getSubInstance("PipelineReg0")->getEventResult("DFFD"), "PipelineReg0", number_bits_per_flit);
+ getEventResult("WriteBuffer")->addSubResult(getSubInstance("PipelineReg0")->getEventResult("DFFQ"), "PipelineReg0", number_bits_per_flit);
+ getEventResult("WriteBuffer")->addSubResult(getSubInstance("PipelineReg0")->getEventResult("CK"), "PipelineReg0", number_bits_per_flit);
+ getEventResult("WriteBuffer")->addSubResult(getSubInstance("InputPort")->getEventResult("WriteBuffer"), "InputPort", 1.0);
+
+ // Add read buffer event
+ getEventResult("ReadBuffer")->addSubResult(getSubInstance("InputPort")->getEventResult("ReadBuffer"), "InputPort", 1.0);
+ getEventResult("ReadBuffer")->addSubResult(getSubInstance("PipelineReg1")->getEventResult("DFFD"), "PipelineReg1", number_bits_per_flit);
+ getEventResult("ReadBuffer")->addSubResult(getSubInstance("PipelineReg1")->getEventResult("DFFQ"), "PipelineReg1", number_bits_per_flit);
+ getEventResult("ReadBuffer")->addSubResult(getSubInstance("PipelineReg1")->getEventResult("CK"), "PipelineReg1", number_bits_per_flit);
+
+ // Add crossbar traversal event
+ for(unsigned int i = 1; i <= number_output_ports; ++i)
+ {
+ Result* traverse_crossbar_event = getEventResult("TraverseCrossbar->Multicast" + (String)i);
+ traverse_crossbar_event->addSubResult(getSubInstance("Crossbar_Sel_DFF")->getEventResult("DFFD"), "Crossbar_Sel_DFF", number_crossbar_selects);
+ traverse_crossbar_event->addSubResult(getSubInstance("Crossbar_Sel_DFF")->getEventResult("DFFQ"), "Crossbar_Sel_DFF", number_crossbar_selects);
+ traverse_crossbar_event->addSubResult(getSubInstance("Crossbar_Sel_DFF")->getEventResult("CK"), "Crossbar_Sel_DFF", number_crossbar_selects);
+ traverse_crossbar_event->addSubResult(getSubInstance("Crossbar")->getEventResult("Multicast" + (String)i), "Crossbar", 1.0);
+ for(unsigned int j = 0; j < i; ++j)
+ {
+ traverse_crossbar_event->addSubResult(getSubInstance("PipelineReg2_" + (String)j)->getEventResult("DFFD"), "PipelineReg2_" + (String)j, number_bits_per_flit);
+ traverse_crossbar_event->addSubResult(getSubInstance("PipelineReg2_" + (String)j)->getEventResult("DFFQ"), "PipelineReg2_" + (String)j, number_bits_per_flit);
+ traverse_crossbar_event->addSubResult(getSubInstance("PipelineReg2_" + (String)j)->getEventResult("CK"), "PipelineReg2_" + (String)j, number_bits_per_flit);
+ }
+ }
+
+ // Add stage1 allocator arbitrate
+ Result* arb_sw_stage1_event = getEventResult("ArbitrateSwitch->ArbitrateStage1");
+ arb_sw_stage1_event->addSubResult(getSubInstance("SwitchAllocator")->getEventResult("ArbitrateStage1"), "SwitchAllocator", 1.0);
+
+ // Add stage2 allocator arbitrate
+ Result* arb_sw_stage2_event = getEventResult("ArbitrateSwitch->ArbitrateStage2");
+ arb_sw_stage2_event->addSubResult(getSubInstance("SwitchAllocator")->getEventResult("ArbitrateStage2"), "SwitchAllocator", 1.0);
+
+ // Add CK event
+ getEventResult("DistributeClock")->addSubResult(getSubInstance("ClockTree")->getEventResult("Send"), "ClockTree", 1.0);
+ return;
+ }
+
+ void Router::updateModel()
+ {
+ // Get parameters
+ unsigned int number_output_ports = getParameter("NumberOutputPorts").toUInt();
+
+ // Update other components
+ getSubInstance("PipelineReg0")->update();
+ getSubInstance("InputPort")->update();
+ getSubInstance("PipelineReg1")->update();
+ getSubInstance("Crossbar_Sel_DFF")->update();
+ getSubInstance("Crossbar")->update();
+ for(unsigned int i = 0; i < number_output_ports; ++i)
+ {
+ getSubInstance("PipelineReg2_" + (String)i)->update();
+ }
+ getSubInstance("SwitchAllocator")->update();
+
+ // Update clock tree
+ double total_clock_tree_cap = getNet("CK")->getTotalDownstreamCap();
+ double router_area = getAreaResult("Active")->calculateSum();
+ Model* clock_tree = getSubInstance("ClockTree");
+ clock_tree->setProperty("SitePitch", sqrt(router_area));
+ clock_tree->setProperty("TotalLoadCapPerBit", total_clock_tree_cap);
+ clock_tree->update();
+
+ return;
+ }
+
+ void Router::propagateTransitionInfo()
+ {
+ // Update probability
+ unsigned int number_output_ports = getParameter("NumberOutputPorts");
+
+ // Current event
+ const String& current_event = getGenProperties()->get("UseModelEvent");
+
+ ElectricalModel* pipeline_reg0 = (ElectricalModel*)getSubInstance("PipelineReg0");
+ propagatePortTransitionInfo(pipeline_reg0, "D", "FlitIn0");
+ propagatePortTransitionInfo(pipeline_reg0, "CK", "CK");
+ pipeline_reg0->use();
+
+ ElectricalModel* input_port = (ElectricalModel*)getSubInstance("InputPort");
+ propagatePortTransitionInfo(input_port, "FlitIn", pipeline_reg0, "Q");
+ propagatePortTransitionInfo(input_port, "CK", "CK");
+ input_port->getGenProperties()->set("UseModelEvent", "ReadWrite");
+ input_port->use();
+
+ ElectricalModel* pipeline_reg1 = (ElectricalModel*)getSubInstance("PipelineReg1");
+ propagatePortTransitionInfo(pipeline_reg1, "D", "FlitIn0");
+ propagatePortTransitionInfo(pipeline_reg1, "CK", "CK");
+ pipeline_reg1->use();
+
+ ElectricalModel* crossbar_sel_dff = (ElectricalModel*)getSubInstance("Crossbar_Sel_DFF");
+ assignPortTransitionInfo(crossbar_sel_dff, "D", TransitionInfo());
+ propagatePortTransitionInfo(crossbar_sel_dff, "CK", "CK");
+ crossbar_sel_dff->use();
+
+ ElectricalModel* crossbar = (ElectricalModel*)getSubInstance("Crossbar");
+ bool is_crossbar_event = false;
+ for(unsigned int i = 1; i <= number_output_ports; ++i)
+ {
+ if(current_event == ("TraverseCrossbar->Multicast" + (String)i))
+ {
+ is_crossbar_event = true;
+ // Assume the flit is sent from port 0 to port 0~i-1
+ // Apply default transition info
+ crossbar->applyTransitionInfo("Multicast" + (String)i);
+ // Overwrite transition info
+ propagatePortTransitionInfo(crossbar, "In0", "FlitIn0");
+ break;
+ }
+ }
+ if(is_crossbar_event == false)
+ {
+ crossbar->applyTransitionInfo("Multicast1");
+ propagatePortTransitionInfo(crossbar, "In0", "FlitIn0");
+ }
+ crossbar->use();
+
+ vector<ElectricalModel*> pipeline_reg2s(number_output_ports, NULL);
+ for(unsigned int i = 0; i < number_output_ports; ++i)
+ {
+ pipeline_reg2s[i] = (ElectricalModel*)getSubInstance("PipelineReg2_" + (String)i);
+ propagatePortTransitionInfo(pipeline_reg2s[i], "D", "FlitIn0");
+ propagatePortTransitionInfo(pipeline_reg2s[i], "CK", "CK");
+ pipeline_reg2s[i]->use();
+ }
+
+ ElectricalModel* sw_allocator = (ElectricalModel*)getSubInstance("SwitchAllocator");
+ if(current_event == "ArbitrateSwitch->ArbitrateStage1")
+ {
+ sw_allocator->applyTransitionInfo("ArbitrateStage1");
+ }
+ else if(current_event == "ArbitrateSwitch->ArbitrateStage2")
+ {
+ sw_allocator->applyTransitionInfo("ArbitrateStage2");
+ }
+ else
+ {
+ sw_allocator->applyTransitionInfo("Idle");
+ }
+ sw_allocator->use();
+
+ ElectricalModel* clock_tree = (ElectricalModel*)getSubInstance("ClockTree");
+ propagatePortTransitionInfo(clock_tree, "In", "CK");
+ clock_tree->use();
+ return;
+ }
+
+ void Router::createRouterInputPort()
+ {
+ // Get parameters
+ unsigned int number_input_ports = getParameter("NumberInputPorts").toUInt();
+ unsigned int number_vns = getParameter("NumberVirtualNetworks").toUInt();
+ const String& number_vcs_per_vn = getParameter("NumberVirtualChannelsPerVirtualNetwork");
+ const String& number_bufs_per_vc = getParameter("NumberBuffersPerVirtualChannel");
+ unsigned int number_bits_per_flit = getParameter("NumberBitsPerFlit").toUInt();
+ const String& buffer_model = getParameter("InputPort->BufferModel");
+
+ // Init input port model
+ const String& input_port_name = "InputPort";
+ RouterInputPort* input_port = new RouterInputPort(input_port_name, getTechModel());
+ input_port->setParameter("NumberVirtualNetworks", number_vns);
+ input_port->setParameter("NumberVirtualChannelsPerVirtualNetwork", number_vcs_per_vn);
+ input_port->setParameter("NumberBuffersPerVirtualChannel", number_bufs_per_vc);
+ input_port->setParameter("NumberBitsPerFlit", number_bits_per_flit);
+ input_port->setParameter("BufferModel", buffer_model);
+ input_port->construct();
+
+ unsigned int number_input_port_outputs = input_port->getGenProperties()->get("NumberOutputs");
+ unsigned int number_input_port_addr_bits = input_port->getGenProperties()->get("NumberAddressBits");
+ getGenProperties()->set("InputPort->NumberOutputs", number_input_port_outputs);
+ getGenProperties()->set("InputPort->NumberAddressBits", number_input_port_addr_bits);
+
+ unsigned int total_number_vcs = input_port->getGenProperties()->get("TotalNumberVirtualChannels");
+ getGenProperties()->set("TotalNumberVirtualChannels", total_number_vcs);
+
+ // Add the instance and the results
+ addSubInstances(input_port, number_input_ports);
+ addElectricalSubResults(input_port, number_input_ports);
+
+ // Create connections
+ createNet("InputPort_In", makeNetIndex(0, number_bits_per_flit-1));
+ createNet("InputPort_Out", makeNetIndex(0, number_bits_per_flit-1));
+
+ assignVirtualFanout("InputPort_In", "PipelineReg0_Out");
+ portConnect(input_port, "FlitIn", "InputPort_In");
+ portConnect(input_port, "CK", "CK");
+ portConnect(input_port, "FlitOut", "InputPort_Out");
+ assignVirtualFanin("PipelineReg1_In", "InputPort_Out");
+
+ return;
+ }
+
+ void Router::createVirtualChannelAllocator()
+ {}
+
+ void Router::createSwitchAllocator()
+ {
+ // Get parameters
+ unsigned int number_input_ports = getParameter("NumberInputPorts").toUInt();
+ unsigned int number_output_ports = getParameter("NumberOutputPorts").toUInt();
+ unsigned int total_number_vcs = getGenProperties()->get("TotalNumberVirtualChannels").toUInt();
+ const String& arb_model = getParameter("SwitchAllocator->ArbiterModel");
+
+ // Init switch allocator model
+ const String& sw_allocator_name = "SwitchAllocator";
+ RouterSwitchAllocator* sw_allocator = new RouterSwitchAllocator(sw_allocator_name, getTechModel());
+ sw_allocator->setParameter("NumberInputPorts", number_input_ports);
+ sw_allocator->setParameter("NumberOutputPorts", number_output_ports);
+ sw_allocator->setParameter("TotalNumberVirtualChannels", total_number_vcs);
+ sw_allocator->setParameter("ArbiterModel", arb_model);
+ sw_allocator->construct();
+
+ // Add the instance and the results
+ addSubInstances(sw_allocator, 1.0);
+ addElectricalSubResults(sw_allocator, 1.0);
+
+ // Create connections (currently connect CK only)
+ portConnect(sw_allocator, "CK", "CK");
+ return;
+ }
+
+ void Router::createCrossbar()
+ {
+ // Get parameters
+ const String& crossbar_model = getParameter("CrossbarModel");
+ unsigned int number_input_ports = getParameter("NumberInputPorts").toUInt();
+ unsigned int number_output_ports = getParameter("NumberOutputPorts").toUInt();
+ unsigned int number_bits_per_flit = getParameter("NumberBitsPerFlit").toUInt();
+ unsigned int number_input_port_outputs = getGenProperties()->get("InputPort->NumberOutputs").toUInt();
+
+ unsigned int number_crossbar_inputs = number_input_port_outputs * number_input_ports;
+ unsigned int number_crossbar_outputs = number_output_ports;
+ getGenProperties()->set("Crossbar->NumberInputs", number_crossbar_inputs);
+ getGenProperties()->set("Crossbar->NumberOutputs", number_crossbar_outputs);
+
+ // Init crossbar model
+ const String& crossbar_name = "Crossbar";
+ ElectricalModel* crossbar = ModelGen::createCrossbar(crossbar_model, crossbar_name, getTechModel());
+ crossbar->setParameter("NumberInputs", number_crossbar_inputs);
+ crossbar->setParameter("NumberOutputs", number_crossbar_outputs);
+ crossbar->setParameter("NumberBits", number_bits_per_flit);
+ crossbar->setParameter("BitDuplicate", "TRUE");
+ crossbar->construct();
+
+ unsigned int number_crossbar_selects = crossbar->getGenProperties()->get("NumberSelectsPerPort");
+ getGenProperties()->set("Crossbar->NumberSelects", number_crossbar_selects);
+
+ // Init DFF for crossbar selections
+ const String& crossbar_sel_dff_name = "Crossbar_Sel_DFF";
+ StdCell* crossbar_sel_dff = getTechModel()->getStdCellLib()->createStdCell("DFFQ", crossbar_sel_dff_name);
+ crossbar_sel_dff->construct();
+
+ // Add instances and results
+ addSubInstances(crossbar, 1.0);
+ addElectricalSubResults(crossbar, 1.0);
+
+ addSubInstances(crossbar_sel_dff, number_crossbar_outputs * number_crossbar_selects);
+ addElectricalSubResults(crossbar_sel_dff, number_crossbar_outputs * number_crossbar_selects);
+
+ // Create connections
+ createNet("Crossbar_Sel_DFF_Out");
+ for(unsigned int i = 0; i < number_crossbar_outputs; ++i)
+ {
+ for(unsigned int j = 0; j < number_crossbar_selects; ++j)
+ {
+ createNet(String::format("Crossbar_Sel%d_%d", i, j));
+ }
+ createNet("Crossbar_Out" + (String)i, makeNetIndex(0, number_bits_per_flit-1));
+ }
+ for(unsigned int i = 0; i < number_crossbar_inputs; ++i)
+ {
+ createNet("Crossbar_In" + (String)i, makeNetIndex(0, number_bits_per_flit-1));
+ }
+
+ for(unsigned int i = 0; i < number_crossbar_selects; ++i)
+ {
+ portConnect(crossbar_sel_dff, "CK", "CK");
+ }
+ portConnect(crossbar_sel_dff, "Q", "Crossbar_Sel_DFF_Out");
+ for(unsigned int i = 0; i < number_crossbar_inputs; ++i)
+ {
+ assignVirtualFanout("Crossbar_In" + (String)i, "PipelineReg1_Out");
+ portConnect(crossbar, "In" + (String)i, "Crossbar_In" + (String)i);
+ }
+ for(unsigned int i = 0; i < number_crossbar_outputs; ++i)
+ {
+ for(unsigned int j = 0; j < number_crossbar_selects; ++j)
+ {
+ assignVirtualFanout(String::format("Crossbar_Sel%d_%d", i, j), "Crossbar_Sel_DFF_Out");
+ portConnect(crossbar, String::format("Sel%d_%d", i, j), String::format("Crossbar_Sel%d_%d", i, j));
+ }
+ portConnect(crossbar, "Out" + (String)i, "Crossbar_Out" + (String)i);
+ assignVirtualFanin("PipelineReg2_In" + (String)i, "Crossbar_Out" + (String)i);
+ }
+
+ return;
+ }
+
+ void Router::createPipelineReg()
+ {
+ // Get parameters
+ unsigned int number_input_ports = getParameter("NumberInputPorts").toUInt();
+ unsigned int number_output_ports = getParameter("NumberOutputPorts").toUInt();
+ unsigned int number_bits_per_flit = getParameter("NumberBitsPerFlit").toUInt();
+ unsigned int number_crossbar_inputs = getGenProperties()->get("Crossbar->NumberInputs");
+
+ // Init pipeline reg model
+ // First stage: from router input to input port
+ const String& pipeline_reg0_name = "PipelineReg0";
+ StdCell* pipeline_reg0 = getTechModel()->getStdCellLib()->createStdCell("DFFQ", pipeline_reg0_name);
+ pipeline_reg0->construct();
+ // Second stage: from input port to crossbar
+ const String& pipeline_reg1_name = "PipelineReg1";
+ StdCell* pipeline_reg1 = getTechModel()->getStdCellLib()->createStdCell("DFFQ", pipeline_reg1_name);
+ pipeline_reg1->construct();
+
+ // Third stage: from crossbar to router output
+ vector<StdCell*> pipeline_reg2s(number_output_ports, (StdCell*)NULL);
+ vector<String> pipeline_reg2_names(number_output_ports, "");
+ for(unsigned int i = 0; i < number_output_ports; ++i)
+ {
+ pipeline_reg2_names[i] = "PipelineReg2_" + (String)i;
+ pipeline_reg2s[i] = getTechModel()->getStdCellLib()->createStdCell("DFFQ", pipeline_reg2_names[i]);
+ pipeline_reg2s[i]->construct();
+ }
+
+ // Add instances and results
+ addSubInstances(pipeline_reg0, number_input_ports * number_bits_per_flit);
+ addElectricalSubResults(pipeline_reg0, number_input_ports * number_bits_per_flit);
+
+ addSubInstances(pipeline_reg1, number_crossbar_inputs * number_bits_per_flit);
+ addElectricalSubResults(pipeline_reg1, number_crossbar_inputs * number_bits_per_flit);
+
+ for(unsigned int i = 0; i < number_output_ports; ++i)
+ {
+ addSubInstances(pipeline_reg2s[i], number_bits_per_flit);
+ addElectricalSubResults(pipeline_reg2s[i], number_bits_per_flit);
+ }
+
+ // Create data connections
+ for(unsigned int i = 0; i < number_input_ports; ++i)
+ {
+ assignVirtualFanin("PipelineReg0_In", "FlitIn" + (String)i);
+ }
+ portConnect(pipeline_reg0, "D", "PipelineReg0_In");
+ portConnect(pipeline_reg0, "Q", "PipelineReg0_Out");
+ portConnect(pipeline_reg1, "D", "PipelineReg1_In");
+ portConnect(pipeline_reg1, "Q", "PipelineReg1_Out");
+ for(unsigned int i = 0; i < number_output_ports; ++i)
+ {
+ portConnect(pipeline_reg2s[i], "D", "PipelineReg2_In" + (String)i);
+ portConnect(pipeline_reg2s[i], "Q", "PipelineReg2_Out" + (String)i);
+ assignVirtualFanout("FlitOut" + (String)i, "PipelineReg2_Out" + (String)i);
+ }
+
+ // Create CK connections
+ for(unsigned int n = 0; n < number_bits_per_flit; ++n)
+ {
+ for(unsigned int i = 0; i < number_input_ports; ++i)
+ {
+ portConnect(pipeline_reg0, "CK", "CK");
+ }
+ for(unsigned int i = 0; i < number_crossbar_inputs; ++i)
+ {
+ portConnect(pipeline_reg1, "CK", "CK");
+ }
+ for(unsigned int i = 0; i < number_output_ports; ++i)
+ {
+ portConnect(pipeline_reg2s[i], "CK", "CK");
+ }
+ }
+ return;
+ }
+
+ void Router::createClockTree()
+ {
+ // Get parameters
+ const String& clock_tree_model = getParameter("ClockTreeModel");
+ const String& clock_tree_number_levels = getParameter("ClockTree->NumberLevels");
+ const String& clock_tree_wire_layer = getParameter("ClockTree->WireLayer");
+ const String& clock_tree_wire_width_multiplier = getParameter("ClockTree->WireWidthMultiplier");
+ const String& clock_tree_wire_spacing_multiplier = getParameter("ClockTree->WireSpacingMultiplier");
+
+ // Init clock tree model
+ const String& clock_tree_name = "ClockTree";
+ ElectricalModel* clock_tree = (ElectricalModel*)ModelGen::createModel(clock_tree_model, clock_tree_name, getTechModel());
+ clock_tree->setParameter("NumberLevels", clock_tree_number_levels);
+ clock_tree->setParameter("NumberBits", 1);
+ clock_tree->setParameter("WireLayer", clock_tree_wire_layer);
+ clock_tree->setParameter("WireWidthMultiplier", clock_tree_wire_width_multiplier);
+ clock_tree->setParameter("WireSpacingMultiplier", clock_tree_wire_spacing_multiplier);
+ clock_tree->construct();
+
+ // Add instances and results
+ addSubInstances(clock_tree, 1.0);
+ addElectricalSubResults(clock_tree, 1.0);
+
+ return;
+ }
+} // namespace DSENT
+