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Allow empty regions for device extractor.

This commit is contained in:
Matthias Koefferlein 2019-02-25 23:51:21 +01:00
parent 21ea37f747
commit 36a3540e16
4 changed files with 208 additions and 8 deletions
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27
src/db/db/dbDeepShapeStore.cc
View File

@ -222,14 +222,23 @@ DeepLayer::check_dss () const
struct DeepShapeStore::LayoutHolder
{
LayoutHolder (const db::ICplxTrans &trans)
: refs (0), layout (false), builder (&layout, trans)
: refs (0), layout (false), builder (&layout, trans), m_empty_layer (std::numeric_limits<unsigned int>::max ())
{
// .. nothing yet ..
}
unsigned int make_empty_layer ()
{
if (m_empty_layer == std::numeric_limits<unsigned int>::max ()) {
m_empty_layer = layout.insert_layer ();
layer_refs [m_empty_layer] += 1; // the empty layer is not deleted
}
return m_empty_layer;
}
void add_layer_ref (unsigned int layer)
{
layer_refs[layer] += 1;
layer_refs [layer] += 1;
}
void remove_layer_ref (unsigned int layer)
@ -244,6 +253,9 @@ struct DeepShapeStore::LayoutHolder
db::Layout layout;
db::HierarchyBuilder builder;
std::map<unsigned int, int> layer_refs;
private:
unsigned int m_empty_layer;
};
// ----------------------------------------------------------------------------------
@ -426,6 +438,17 @@ DeepLayer DeepShapeStore::create_polygon_layer (const db::RecursiveShapeIterator
return DeepLayer (this, layout_index, layer_index);
}
DeepLayer DeepShapeStore::empty_layer (unsigned int layout_index)
{
return DeepLayer (this, layout_index, m_layouts[layout_index]->make_empty_layer ());
}
DeepLayer DeepShapeStore::empty_layer ()
{
require_singular ();
return empty_layer (0);
}
DeepLayer DeepShapeStore::create_custom_layer (const db::RecursiveShapeIterator &si, HierarchyBuilderShapeReceiver *pipe, const db::ICplxTrans &trans)
{
unsigned int layout_index = layout_for_iter (si, trans);

13
src/db/db/dbDeepShapeStore.h
View File

@ -294,6 +294,19 @@ public:
*/
DeepLayer create_custom_layer (const db::RecursiveShapeIterator &si, HierarchyBuilderShapeReceiver *pipe, const ICplxTrans &trans = db::ICplxTrans ());
/**
* @brief Gets the empty working layer
*
* This method will deliver an empty layer for the given layout index. CAUTION: don't modify this layer as it may
* be reused.
*/
DeepLayer empty_layer (unsigned int layout_index);
/**
* @brief Gets the empty working layer for the singular layout
*/
DeepLayer empty_layer ();
/**
* @brief Inserts the deep layer's shapes into some target layout
*/

21
src/db/db/dbNetlistDeviceExtractor.cc
View File

@ -140,14 +140,23 @@ void NetlistDeviceExtractor::extract (db::DeepShapeStore &dss, const NetlistDevi
tl_assert (l->second != 0);
db::DeepRegion *dr = dynamic_cast<db::DeepRegion *> (l->second->delegate ());
if (dr == 0) {
throw tl::Exception (tl::sprintf (tl::to_string (tr ("Invalid region passed to input layer '%s' for device extraction: must be of deep region kind")), ld->name));
}
if (&dr->deep_layer ().layout () != &dss.layout () || &dr->deep_layer ().initial_cell () != &dss.initial_cell ()) {
throw tl::Exception (tl::sprintf (tl::to_string (tr ("Invalid region passed to input layer '%s' for device extraction: not originating from the same source")), ld->name));
}
if (l->second->empty ()) {
// provide a substitute empty layer
layers.push_back (dss.empty_layer ().layer ());
} else {
throw tl::Exception (tl::sprintf (tl::to_string (tr ("Invalid region passed to input layer '%s' for device extraction: must be of deep region kind")), ld->name));
}
layers.push_back (dr->deep_layer ().layer ());
} else {
if (&dr->deep_layer ().layout () != &dss.layout () || &dr->deep_layer ().initial_cell () != &dss.initial_cell ()) {
throw tl::Exception (tl::sprintf (tl::to_string (tr ("Invalid region passed to input layer '%s' for device extraction: not originating from the same source")), ld->name));
}
layers.push_back (dr->deep_layer ().layer ());
}
}

155
src/db/unit_tests/dbLayoutToNetlistTests.cc
View File

@ -1742,3 +1742,158 @@ TEST(6_MoreDeviceTypes)
" DLVNMOS $6 (S=VSS,G=A,D=$6,B=BULK) [L=1.2,W=1.7,AS=2.346,AD=2.1165,PS=6.16,PD=5.89]\n"
);
}
TEST(7_MoreByEmptyDeviceTypes)
{
db::Layout ly;
db::LayerMap lmap;
unsigned int nwell = define_layer (ly, lmap, 1);
unsigned int active = define_layer (ly, lmap, 2);
unsigned int thickgox = define_layer (ly, lmap, 1003); // does not exist
unsigned int pplus = define_layer (ly, lmap, 4);
unsigned int nplus = define_layer (ly, lmap, 5);
unsigned int poly = define_layer (ly, lmap, 6);
unsigned int poly_lbl = define_layer (ly, lmap, 7);
unsigned int cont = define_layer (ly, lmap, 8);
unsigned int metal1 = define_layer (ly, lmap, 9);
unsigned int metal1_lbl = define_layer (ly, lmap, 10);
unsigned int via1 = define_layer (ly, lmap, 11);
unsigned int metal2 = define_layer (ly, lmap, 12);
unsigned int metal2_lbl = define_layer (ly, lmap, 13);
{
db::LoadLayoutOptions options;
options.get_options<db::CommonReaderOptions> ().layer_map = lmap;
options.get_options<db::CommonReaderOptions> ().create_other_layers = false;
std::string fn (tl::testsrc ());
fn = tl::combine_path (fn, "testdata");
fn = tl::combine_path (fn, "algo");
fn = tl::combine_path (fn, "device_extract_l6.gds");
tl::InputStream stream (fn);
db::Reader reader (stream);
reader.read (ly, options);
}
db::Cell &tc = ly.cell (*ly.begin_top_down ());
db::LayoutToNetlist l2n (db::RecursiveShapeIterator (ly, tc, std::set<unsigned int> ()));
std::auto_ptr<db::Region> rbulk (l2n.make_layer ("bulk"));
std::auto_ptr<db::Region> rnwell (l2n.make_layer (nwell, "nwell"));
std::auto_ptr<db::Region> rthickgox (l2n.make_layer (thickgox, "thickgox"));
std::auto_ptr<db::Region> ractive (l2n.make_layer (active, "active"));
std::auto_ptr<db::Region> rpplus (l2n.make_layer (pplus, "pplus"));
std::auto_ptr<db::Region> rnplus (l2n.make_layer (nplus, "nplus"));
std::auto_ptr<db::Region> rpoly (l2n.make_polygon_layer (poly, "poly"));
std::auto_ptr<db::Region> rpoly_lbl (l2n.make_text_layer (poly_lbl, "poly_lbl"));
std::auto_ptr<db::Region> rcont (l2n.make_polygon_layer (cont, "cont"));
std::auto_ptr<db::Region> rmetal1 (l2n.make_polygon_layer (metal1, "metal1"));
std::auto_ptr<db::Region> rmetal1_lbl (l2n.make_text_layer (metal1_lbl, "metal1_lbl"));
std::auto_ptr<db::Region> rvia1 (l2n.make_polygon_layer (via1, "via1"));
std::auto_ptr<db::Region> rmetal2 (l2n.make_polygon_layer (metal2, "metal2"));
std::auto_ptr<db::Region> rmetal2_lbl (l2n.make_text_layer (metal2_lbl, "metal2_lbl"));
// derived regions
db::Region ractive_in_nwell = *ractive & *rnwell;
db::Region rpactive = ractive_in_nwell - *rnplus;
db::Region rntie = ractive_in_nwell & *rnplus;
db::Region rpgate = rpactive & *rpoly;
db::Region rpsd = rpactive - rpgate;
db::Region rhv_pgate = rpgate & *rthickgox;
db::Region rlv_pgate = rpgate - rhv_pgate;
db::Region rhv_psd = rpsd & *rthickgox;
db::Region rlv_psd = rpsd - *rthickgox;
l2n.register_layer(rntie, "ntie");
l2n.register_layer(rpsd, "psd");
db::Region ractive_outside_nwell = *ractive - *rnwell;
db::Region rnactive = ractive_outside_nwell - *rpplus;
db::Region rptie = ractive_outside_nwell & *rpplus;
db::Region rngate = rnactive & *rpoly;
db::Region rnsd = rnactive - rngate;
db::Region rhv_ngate = rngate & *rthickgox;
db::Region rlv_ngate = rngate - rhv_ngate;
db::Region rhv_nsd = rnsd & *rthickgox;
db::Region rlv_nsd = rnsd - *rthickgox;
l2n.register_layer(rptie, "ptie");
l2n.register_layer(rnsd, "nsd");
db::NetlistDeviceExtractorMOS4Transistor hvpmos_ex ("HVPMOS");
db::NetlistDeviceExtractorMOS4Transistor hvnmos_ex ("HVNMOS");
db::NetlistDeviceExtractorMOS4Transistor lvpmos_ex ("LVPMOS");
db::NetlistDeviceExtractorMOS4Transistor lvnmos_ex ("LVNMOS");
// device extraction
db::NetlistDeviceExtractor::input_layers dl;
dl["SD"] = &rpsd;
dl["G"] = &rhv_pgate;
dl["P"] = rpoly.get (); // not needed for extraction but to return terminal shapes
dl["W"] = rnwell.get ();
l2n.extract_devices (hvpmos_ex, dl);
dl["SD"] = &rpsd;
dl["G"] = &rlv_pgate;
dl["P"] = rpoly.get (); // not needed for extraction but to return terminal shapes
dl["W"] = rnwell.get ();
l2n.extract_devices (lvpmos_ex, dl);
dl["SD"] = &rnsd;
dl["G"] = &rhv_ngate;
dl["P"] = rpoly.get (); // not needed for extraction but to return terminal shapes
dl["W"] = rbulk.get ();
l2n.extract_devices (hvnmos_ex, dl);
dl["SD"] = &rnsd;
dl["G"] = &rlv_ngate;
dl["P"] = rpoly.get (); // not needed for extraction but to return terminal shapes
dl["W"] = rbulk.get ();
l2n.extract_devices (lvnmos_ex, dl);
// Intra-layer
l2n.connect (rpsd);
l2n.connect (rnsd);
l2n.connect (*rnwell);
l2n.connect (*rpoly);
l2n.connect (*rcont);
l2n.connect (*rmetal1);
l2n.connect (*rvia1);
l2n.connect (*rmetal2);
l2n.connect (rptie);
l2n.connect (rntie);
// Inter-layer
l2n.connect (*rcont, rntie);
l2n.connect (*rcont, rptie);
l2n.connect (*rnwell, rntie);
l2n.connect (rpsd, *rcont);
l2n.connect (rnsd, *rcont);
l2n.connect (*rpoly, *rcont);
l2n.connect (*rcont, *rmetal1);
l2n.connect (*rmetal1, *rvia1);
l2n.connect (*rvia1, *rmetal2);
l2n.connect (*rpoly, *rpoly_lbl); // attaches labels
l2n.connect (*rmetal1, *rmetal1_lbl); // attaches labels
l2n.connect (*rmetal2, *rmetal2_lbl); // attaches labels
// Global
l2n.connect_global (rptie, "BULK");
l2n.connect_global (*rbulk, "BULK");
l2n.extract_netlist ();
// compare netlist as string
EXPECT_EQ (l2n.netlist ()->to_string (),
"Circuit TOP ():\n"
" DLVPMOS $1 (S=Z,G=$5,D=VDD2,B=$8) [L=1.5,W=4.05,AS=5.4675,AD=2.73375,PS=10.8,PD=5.4]\n"
" DLVPMOS $2 (S=VDD2,G=Z,D=$5,B=$8) [L=1.5,W=4.05,AS=2.73375,AD=5.4675,PS=5.4,PD=10.8]\n"
" DLVPMOS $3 (S=$10,G=A,D=$6,B=$9) [L=1.5,W=2.475,AS=1.11375,AD=3.155625,PS=5.85,PD=7.5]\n"
" DLVNMOS $4 (S=VSS,G=A,D=$6,B=BULK) [L=1.2,W=1.7,AS=2.346,AD=2.1165,PS=6.16,PD=5.89]\n"
" DLVNMOS $5 (S=Z,G=$6,D=VSS,B=BULK) [L=1.5,W=5.25,AS=7.0875,AD=3.54375,PS=13.2,PD=6.6]\n"
" DLVNMOS $6 (S=VSS,G=A,D=$5,B=BULK) [L=1.5,W=5.25,AS=3.54375,AD=7.0875,PS=6.6,PD=13.2]\n"
);
}