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Support of the FOREIGN directive in LEF files (using GDS view). 

* New: In LefImport, add setGdsForeignDirectory() to point out from where
    to load the extra GDS file in case a FOREIGN directory is present
    in MACRO.
      Also add support for merging the supply nets. It may happens that
    the supply nets have different names in the GDS ("vdd!") and LEF files
    ("pvdd"), in that case, the LEF name supersede the GDS one.
      The GDS file will be loaded *first* then completed by the LEF contents.
      Blockage in the GDS file are *not* loaded.
* Change: In GdsParser, perform an early recognition of supply nets. For now
    it's hardwired to names starting by "vdd" and "gnd", but should be
    parametrized in the future.
      Needed for the LefImport to merge, if needed, the power supplies.
      In GdsStream::xyToComponent(), skip the blockage if required.
This commit is contained in:
Jean-Paul Chaput 2023-07-19 16:06:43 +02:00
parent d5f25940a4
commit 892661ca2a
5 changed files with 164 additions and 45 deletions
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1
crlcore/src/ccore/crlcore/Gds.h
View File

@ -33,6 +33,7 @@ namespace CRL {
public:
static const uint32_t NoGdsPrefix = (1<<0);
static const uint32_t Layer_0_IsBoundary = (1<<1);
static const uint32_t NoBlockages = (1<<2);
public:
static bool save ( Cell* );
static bool load ( Library*, std::string gdsPath, uint32_t flags=0 );

7
crlcore/src/ccore/crlcore/LefImport.h
View File

@ -29,9 +29,10 @@ namespace CRL {
class LefImport {
public:
static void reset ();
static Hurricane::Library* load ( std::string fileName );
static void setMergeLibrary ( Hurricane::Library* );
static void reset ();
static Hurricane::Library* load ( std::string fileName );
static void setMergeLibrary ( Hurricane::Library* );
static void setGdsForeignDirectory ( std::string path );
};

11
crlcore/src/ccore/gds/GdsParser.cpp
View File

@ -1079,6 +1079,9 @@ namespace {
if (not net) {
net = Net::create( _cell, _text );
net->setExternal( true );
if (_text.substr(0,3) == "vdd") net->setType ( Net::Type::POWER );
if (_text.substr(0,3) == "gnd") net->setType ( Net::Type::GROUND );
if (_text[ _text.size()-1 ] == '!') net->setGlobal( true );
}
addNetReference( net, layer, xpos, ypos );
}
@ -1513,13 +1516,19 @@ namespace {
if (not net) {
net = Net::create( _cell, _text );
net->setExternal( true );
if (_text.substr(0,3) == "vdd") net->setType ( Net::Type::POWER );
if (_text.substr(0,3) == "gnd") net->setType ( Net::Type::GROUND );
if (_text[ _text.size()-1 ] == '!') net->setGlobal( true );
}
}
} else
_skipENDEL = true;
if (not net) net = fusedNet();
if (layer->isBlockage() and (_flags & Gds::NoBlockages))
return;
if (not net) net = fusedNet();
if (points.size() > 2) {
bool isRectilinear = true;
for ( size_t i=1 ; i<points.size() ; ++i ) {

154
crlcore/src/ccore/lefdef/LefImport.cpp
View File

@ -43,6 +43,7 @@
#include "crlcore/CellGauge.h"
#include "crlcore/AllianceFramework.h"
#include "crlcore/LefImport.h"
#include "crlcore/Gds.h"
#if defined(HAVE_LEFDEF)
@ -73,6 +74,7 @@ namespace {
class LefParser {
public:
static void setMergeLibrary ( Library* );
static void setGdsForeignDirectory ( string );
static DbU::Unit fromLefUnits ( int );
static Layer* getLayer ( string );
static void addLayer ( string, Layer* );
@ -85,6 +87,14 @@ namespace {
Library* createLibrary ();
inline string getLibraryName () const;
inline Library* getLibrary ( bool create=false );
inline string getForeignPath () const;
inline void setForeignPath ( string );
inline const Point& getForeignPosition () const;
inline void setForeignPosition ( const Point& );
inline Net* getGdsPower () const;
inline void setGdsPower ( Net* );
inline Net* getGdsGround () const;
inline void setGdsGround ( Net* );
inline Cell* getCell () const;
inline void setCell ( Cell* );
inline CellGauge* getCellGauge () const;
@ -113,20 +123,26 @@ namespace {
inline void addPinComponent ( string name, Component* );
inline void clearPinComponents ();
private:
static int _unitsCbk ( lefrCallbackType_e, lefiUnits* , lefiUserData );
static int _layerCbk ( lefrCallbackType_e, lefiLayer* , lefiUserData );
static int _siteCbk ( lefrCallbackType_e, lefiSite* , lefiUserData );
static int _obstructionCbk ( lefrCallbackType_e, lefiObstruction*, lefiUserData );
static int _macroCbk ( lefrCallbackType_e, lefiMacro* , lefiUserData );
static int _macroSiteCbk ( lefrCallbackType_e, const lefiMacroSite* , lefiUserData );
static int _pinCbk ( lefrCallbackType_e, lefiPin* , lefiUserData );
static int _unitsCbk ( lefrCallbackType_e, lefiUnits* , lefiUserData );
static int _layerCbk ( lefrCallbackType_e, lefiLayer* , lefiUserData );
static int _siteCbk ( lefrCallbackType_e, lefiSite* , lefiUserData );
static int _obstructionCbk ( lefrCallbackType_e, lefiObstruction* , lefiUserData );
static int _macroCbk ( lefrCallbackType_e, lefiMacro* , lefiUserData );
static int _macroSiteCbk ( lefrCallbackType_e, const lefiMacroSite* , lefiUserData );
static int _macroForeignCbk ( lefrCallbackType_e, const lefiMacroForeign*, lefiUserData );
static int _pinCbk ( lefrCallbackType_e, lefiPin* , lefiUserData );
void _pinStdPostProcess ();
void _pinPadPostProcess ();
private:
static string _gdsForeignDirectory;
static Library* _mergeLibrary;
string _file;
string _libraryName;
Library* _library;
string _foreignPath;
Point _foreignPosition;
Net* _gdsPower;
Net* _gdsGround;
Cell* _cell;
Net* _net;
string _busBits;
@ -152,6 +168,14 @@ namespace {
inline Library* LefParser::getLibrary ( bool create ) { if (not _library and create) createLibrary(); return _library; }
inline Cell* LefParser::getCell () const { return _cell; }
inline void LefParser::setCell ( Cell* cell ) { _cell=cell; }
inline string LefParser::getForeignPath () const { return _foreignPath; }
inline void LefParser::setForeignPath ( string path ) { _foreignPath=path; }
inline const Point& LefParser::getForeignPosition () const { return _foreignPosition; }
inline void LefParser::setForeignPosition ( const Point& position ) { _foreignPosition=position; }
inline Net* LefParser::getGdsPower () const { return _gdsPower; }
inline void LefParser::setGdsPower ( Net* net ) { _gdsPower=net; }
inline Net* LefParser::getGdsGround () const { return _gdsGround; }
inline void LefParser::setGdsGround ( Net* net ) { _gdsGround=net; }
inline void LefParser::setCellGauge ( CellGauge* gauge ) { _cellGauge=gauge; }
inline Net* LefParser::getNet () const { return _net; }
inline void LefParser::setNet ( Net* net ) { _net=net; }
@ -177,6 +201,7 @@ namespace {
inline void LefParser::clearPinComponents () { _pinComponents.clear(); }
string LefParser::_gdsForeignDirectory = "";
Library* LefParser::_mergeLibrary = nullptr;
map<string,Layer*> LefParser::_layerLut;
DbU::Unit LefParser::_coreSiteX = 0;
@ -187,6 +212,10 @@ namespace {
{ _mergeLibrary = library; }
void LefParser::setGdsForeignDirectory ( string path )
{ _gdsForeignDirectory = path; }
void LefParser::reset ()
{
_layerLut.clear();
@ -226,9 +255,13 @@ namespace {
LefParser::LefParser ( string file, string libraryName )
: _file (file)
, _libraryName (libraryName)
, _library (NULL)
, _cell (NULL)
, _net (NULL)
, _library (nullptr)
, _foreignPath ()
, _foreignPosition (Point(0,0))
, _gdsPower (nullptr)
, _gdsGround (nullptr)
, _cell (nullptr)
, _net (nullptr)
, _busBits ("()")
, _unitsMicrons (0.01)
, _unmatchedLayers ()
@ -236,8 +269,8 @@ namespace {
, _nthMetal (0)
, _nthCut (0)
, _nthRouting (0)
, _routingGauge (NULL)
, _cellGauge (NULL)
, _routingGauge (nullptr)
, _cellGauge (nullptr)
, _minTerminalWidth(DbU::fromPhysical(Cfg::getParamDouble("lefImport.minTerminalWidth",0.0)->asDouble(),DbU::UnitPower::Micro))
{
_routingGauge = AllianceFramework::get()->getRoutingGauge();
@ -262,13 +295,14 @@ namespace {
}
lefrInit();
lefrSetUnitsCbk ( _unitsCbk );
lefrSetLayerCbk ( _layerCbk );
lefrSetSiteCbk ( _siteCbk );
lefrSetObstructionCbk( _obstructionCbk );
lefrSetMacroCbk ( _macroCbk );
lefrSetMacroSiteCbk ( _macroSiteCbk );
lefrSetPinCbk ( _pinCbk );
lefrSetUnitsCbk ( _unitsCbk );
lefrSetLayerCbk ( _layerCbk );
lefrSetSiteCbk ( _siteCbk );
lefrSetObstructionCbk ( _obstructionCbk );
lefrSetMacroCbk ( _macroCbk );
lefrSetMacroSiteCbk ( _macroSiteCbk );
lefrSetMacroForeignCbk( _macroForeignCbk );
lefrSetPinCbk ( _pinCbk );
}
@ -458,6 +492,20 @@ namespace {
return 0;
}
int LefParser::_macroForeignCbk ( lefrCallbackType_e c, const lefiMacroForeign* foreign, lefiUserData ud )
{
LefParser* parser = (LefParser*)ud;
AllianceFramework* af = AllianceFramework::get();
if (_gdsForeignDirectory.empty()) return 0;
string gdsPath = _gdsForeignDirectory + "/" + foreign->cellName() + ".gds";
parser->setForeignPath( gdsPath );
parser->setForeignPosition( Point( parser->fromUnitsMicrons( foreign->px() )
, parser->fromUnitsMicrons( foreign->px() )));
return 0;
}
int LefParser::_obstructionCbk ( lefrCallbackType_e c, lefiObstruction* obstruction, lefiUserData ud )
{
@ -550,6 +598,21 @@ namespace {
parser->setCell( cell );
}
if (not parser->getForeignPath().empty()) {
Gds::load( parser->getLibrary(), parser->getForeignPath()
, Gds::NoGdsPrefix|Gds::NoBlockages|Gds::Layer_0_IsBoundary);
for ( Net* net : cell->getNets() ) {
if (net->isPower ()) parser->setGdsPower ( net );
if (net->isGround()) parser->setGdsGround( net );
if (parser->getForeignPosition() != Point(0,0)) {
for ( Component* component : net->getComponents() ) {
component->translate( parser->getForeignPosition().getX()
, parser->getForeignPosition().getY() );
}
}
}
}
if (macro->hasSize()) {
width = parser->fromUnitsMicrons( macro->sizeX() );
height = parser->fromUnitsMicrons( macro->sizeY() );
@ -581,7 +644,7 @@ namespace {
else parser->_pinPadPostProcess();
parser->clearPinComponents();
cerr << " - " << cellName
cerr << " o " << cellName
<< " " << DbU::getValueString(width) << " " << DbU::getValueString(height)
<< " " << gaugeName;
if (isPad) cerr << " (PAD)";
@ -612,8 +675,38 @@ namespace {
if (not parser->getCell()) parser->setCell( Cell::create( parser->getLibrary(true), "LefImportTmpCell" ) );
Net* net = Net::create( parser->getCell(), pin->name() );
Net* net = nullptr;
Net::Type netType = Net::Type::UNDEFINED;
if (pin->hasUse()) {
string lefUse = pin->use();
boost::to_upper( lefUse );
if (lefUse == "SIGNAL") netType = Net::Type::LOGICAL;
//if (lefUse == "ANALOG") netType = Net::Type::ANALOG;
if (lefUse == "CLOCK" ) netType = Net::Type::CLOCK;
if (lefUse == "POWER" ) netType = Net::Type::POWER;
if (lefUse == "GROUND") netType = Net::Type::GROUND;
}
if ((netType == Net::Type::POWER) and parser->getGdsPower()) {
net = parser->getGdsPower();
cerr << " - Renaming GDS power net \"" << net->getName() << "\""
<< " to LEF name \"" << pin->name() << "\"." << endl;
net->setName( pin->name() );
parser->setGdsPower( nullptr );
} else {
if ((netType == Net::Type::GROUND) and parser->getGdsGround()) {
net = parser->getGdsGround();
cerr << " - Renaming GDS ground net \"" << net->getName() << "\""
<< " to LEF name \"" << pin->name() << "\"." << endl;
net->setName( pin->name() );
parser->setGdsGround( nullptr );
} else {
net = Net::create( parser->getCell(), pin->name() );
}
}
net->setExternal( true );
net->setType ( netType );
if (pin->hasDirection()) {
string lefDir = pin->direction();
@ -624,17 +717,6 @@ namespace {
if (lefDir == "OUTPUT TRISTATE") net->setDirection( Net::Direction::TRISTATE );
if (lefDir == "INOUT" ) net->setDirection( Net::Direction::INOUT );
}
if (pin->hasUse()) {
string lefUse = pin->use();
boost::to_upper( lefUse );
if (lefUse == "SIGNAL") net->setType( Net::Type::LOGICAL );
//if (lefUse == "ANALOG") net->setType( Net::Type::ANALOG );
if (lefUse == "CLOCK" ) net->setType( Net::Type::CLOCK );
if (lefUse == "POWER" ) net->setType( Net::Type::POWER );
if (lefUse == "GROUND") net->setType( Net::Type::GROUND );
}
if (net->isSupply()) net->setGlobal( true );
if (pin->name()[ strlen(pin->name())-1 ] == '!') net->setGlobal( true );
@ -1072,4 +1154,12 @@ namespace CRL {
}
void LefImport::setGdsForeignDirectory ( string path )
{
#if defined(HAVE_LEFDEF)
LefParser::setGdsForeignDirectory( path );
#endif
}
} // End of CRL namespace.

36
crlcore/src/pyCRL/PyLefImport.cpp
View File

@ -109,19 +109,37 @@ extern "C" {
}
static PyObject* PyLefImport_setGdsForeignDirectory ( PyObject*, PyObject* args )
{
cdebug_log(30,0) << "PyLefImport_setGdsForeignDirectory()" << endl;
HTRY
char* path = NULL;
if (PyArg_ParseTuple( args, "s:LefImport.setGdsForeignDirectory", &path )) {
LefImport::setGdsForeignDirectory( path );
} else {
PyErr_SetString ( ConstructorError, "LefImport.setGdsForeignDirectory(): Bad type or bad number of parameters." );
return NULL;
}
HCATCH
Py_RETURN_NONE;
}
// Standart Destroy (Attribute).
PyMethodDef PyLefImport_Methods[] =
{ { "load" , (PyCFunction)PyLefImport_load , METH_VARARGS|METH_STATIC
, "Load a complete Cadence LEF library." }
, { "reset" , (PyCFunction)PyLefImport_reset , METH_NOARGS|METH_STATIC
, "Reset the Cadence LEF parser (clear technology)." }
, { "setMergeLibrary" , (PyCFunction)PyLefImport_setMergeLibrary, METH_VARARGS|METH_STATIC
, "Merge into this library instead of creating a new one." }
//, { "destroy" , (PyCFunction)PyLefImport_destroy , METH_VARARGS
// , "Destroy the associated hurricane object. The python object remains." }
, {NULL, NULL, 0, NULL} /* sentinel */
{ { "load" , (PyCFunction)PyLefImport_load , METH_VARARGS|METH_STATIC
, "Load a complete Cadence LEF library." }
, { "reset" , (PyCFunction)PyLefImport_reset , METH_NOARGS|METH_STATIC
, "Reset the Cadence LEF parser (clear technology)." }
, { "setMergeLibrary" , (PyCFunction)PyLefImport_setMergeLibrary , METH_VARARGS|METH_STATIC
, "Merge into this library instead of creating a new one." }
, { "setGdsForeignDirectory", (PyCFunction)PyLefImport_setGdsForeignDirectory, METH_VARARGS|METH_STATIC
, "Set the directory where to find FOREIGN GDS files." }
//, { "destroy" , (PyCFunction)PyLefImport_destroy , METH_VARARGS
// , "Destroy the associated hurricane object. The python object remains." }
, {NULL, NULL, 0, NULL} /* sentinel */
};