File size: 5,171 Bytes
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// Copyright (c) 2023-2026, The OpenROAD Authors
#include <string>
#include <vector>
#include "Test3DBloxCheckerFixture.h"
#include "gtest/gtest.h"
#include "odb/3dblox.h"
#include "odb/db.h"
#include "odb/dbTypes.h"
#include "odb/geom.h"
namespace odb {
namespace {
class CheckerLogicalConnFixture : public CheckerFixture
{
protected:
CheckerLogicalConnFixture()
{
dbTechLayer::create(tech_, "layer1", dbTechLayerType::ROUTING);
// DIE chips need blocks (for bump masters/cells)
dbBlock::create(chip1_, "block1");
dbBlock::create(chip2_, "block2");
// Lib + bump master
lib_ = dbLib::create(db_.get(), "bump_lib", tech_, ',');
bump_master_ = dbMaster::create(lib_, "bump_pad");
bump_master_->setWidth(100);
bump_master_->setHeight(100);
bump_master_->setType(dbMasterType::CORE);
dbMTerm::create(bump_master_, "pin", dbIoType::INOUT, dbSigType::SIGNAL);
bump_master_->setFrozen();
}
// Create a bump on a chip region.
dbChipBump* createBump(dbChip* chip,
dbChipRegion* region,
const char* bump_name,
int x,
int y)
{
dbBlock* block = chip->getBlock();
dbTechLayer* layer = tech_->findLayer("layer1");
// Physical cell in the block
dbInst* inst = dbInst::create(block, bump_master_, bump_name);
inst->setOrigin(x, y);
inst->setPlacementStatus(dbPlacementStatus::PLACED);
// Chip-level bump association
dbChipBump* chip_bump = dbChipBump::create(region, inst);
// Net + BTerm for wire-graph connectivity
std::string net_name = std::string(bump_name) + "_net";
dbNet* net = block->findNet(net_name.c_str());
if (!net) {
net = dbNet::create(block, net_name.c_str());
}
dbBTerm* bterm = dbBTerm::create(net, bump_name);
bterm->setIoType(dbIoType::INOUT);
// BPin with box at the bump location
dbBPin* bpin = dbBPin::create(bterm);
bpin->setPlacementStatus(dbPlacementStatus::PLACED);
dbBox::create(bpin, layer, x, y, x + 100, y + 100);
chip_bump->setNet(net);
chip_bump->setBTerm(bterm);
return chip_bump;
}
void check()
{
utl::Logger logger;
db_->constructUnfoldedModel();
ThreeDBlox three_dblox(&logger, db_.get());
three_dblox.check();
}
dbLib* lib_;
dbMaster* bump_master_;
};
TEST_F(CheckerLogicalConnFixture, test_logical_connectivity_matching_nets)
{
auto* r1_fr = chip1_->findChipRegion("r1_fr");
auto* r2_bk = chip2_->findChipRegion("r2_bk");
createBump(chip1_, r1_fr, "bump1", 100, 100);
createBump(chip2_, r2_bk, "bump2", 100, 100);
auto inst1 = dbChipInst::create(top_chip_, chip1_, "inst1");
inst1->setLoc(Point3D(0, 0, 0));
inst1->setOrient(dbOrientType3D(dbOrientType::R0, false));
auto inst2 = dbChipInst::create(top_chip_, chip2_, "inst2");
inst2->setLoc(Point3D(0, 0, 500)); // Stacked on top
inst2->setOrient(dbOrientType3D(dbOrientType::R0, false));
auto* ri1 = inst1->findChipRegionInst("r1_fr");
auto* ri2 = inst2->findChipRegionInst("r2_bk");
auto* conn1 = dbChipConn::create("c1", top_chip_, {inst2}, ri2, {inst1}, ri1);
conn1->setThickness(0);
auto inst1_bump1 = *ri1->getChipBumpInsts().begin();
auto inst2_bump2 = *ri2->getChipBumpInsts().begin();
auto* chip_net = dbChipNet::create(top_chip_, "net1");
chip_net->addBumpInst(inst1_bump1, {inst1});
chip_net->addBumpInst(inst2_bump2, {inst2});
check();
auto markers = getMarkers(logical_connectivity_category);
EXPECT_TRUE(markers.empty());
}
TEST_F(CheckerLogicalConnFixture, test_logical_connectivity_mismatching_nets)
{
auto* r1_fr = chip1_->findChipRegion("r1_fr");
auto* r2_bk = chip2_->findChipRegion("r2_bk");
createBump(chip1_, r1_fr, "bump1", 200, 200);
createBump(chip2_, r2_bk, "bump2", 200, 200);
auto inst1 = dbChipInst::create(top_chip_, chip1_, "inst1");
inst1->setLoc(Point3D(0, 0, 0));
inst1->setOrient(dbOrientType3D(dbOrientType::R0, false));
auto inst2 = dbChipInst::create(top_chip_, chip2_, "inst2");
inst2->setLoc(Point3D(0, 0, 500)); // Stacked on top
inst2->setOrient(dbOrientType3D(dbOrientType::R0, false));
auto* ri1 = inst1->findChipRegionInst("r1_fr");
auto* ri2 = inst2->findChipRegionInst("r2_bk");
auto* conn1 = dbChipConn::create("c1", top_chip_, {inst2}, ri2, {inst1}, ri1);
conn1->setThickness(0);
auto inst1_bump1 = *ri1->getChipBumpInsts().begin();
auto inst2_bump2 = *ri2->getChipBumpInsts().begin();
auto* chip_net1 = dbChipNet::create(top_chip_, "net1");
chip_net1->addBumpInst(inst1_bump1, {inst1});
auto* chip_net2 = dbChipNet::create(top_chip_, "net2");
chip_net2->addBumpInst(inst2_bump2, {inst2});
check();
auto markers = getMarkers(logical_connectivity_category);
EXPECT_EQ(markers.size(), 1);
if (!markers.empty()) {
auto sources = markers[0]->getSources();
EXPECT_EQ(sources.size(), 2);
// Check message correctness conceptually
EXPECT_NE(markers[0]->getComment().find("logical connectivity mismatch"),
std::string::npos);
}
}
} // namespace
} // namespace odb
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