* Change: In CRL::GdsStream, no longer export empty Cells as structures,
to avoid empty cells in Cadence. To prevent meta-transistors to be
exported as real physical objects.
Also put a hard-coded test to prevent exporting "control_r" model
which is made of AMS standard cells for "amsOTA".
* Change: In CRL/PyRoutingGauge, export the isHV() and isVH() methods so
the Stack can access it.
* Change: In Hurricane/PyCellViewer, export the removeHistory() method.
When a Cell is deleted, it must be also removed from the editor
history. This should be take care of automatically, but for now
we make it manually through scripts.
* Bug: In Anabatic::NetBuilder::doRp_accessAnalog(), the gauge offset
was not taken into account when creating initial Contact on
RoutingPad. The program self corrected afterwards, but with the
display of a disgraceful message.
* Change: In Anabatic::Configuration and Session, export the gauge offsets.
The short net mode degrade the routing in some cases. This will be
fixed in a next batch of commits.
* New: In Hurricane::NetRoutingProperty, added "ShortNet" flag for Nets
that are completly inside *one* GCell.
* Bug: In CRL::BlifParser::Model::staticInit(), when looking for the
output of zero and one cell, also skip the blockage net (as well as
automatic and supplies).
* New: In Anabatic::AutoSegment, added "ShortNet" flag to know if the
segment is part of a short net (fully included in *one* GCell).
Also add accessor/mutators for the _analogMode flag (was it ever
used before?).
* New: In Anabatic::NetBuilder::singleGCell(), if a RoutingPad is
vertically small, add a vertical segment to give it some slack.
* New: In Anabatic::Dijkstra::_materialize(), detect "short net" as
they have only one GCell in their source list...
* Bug: In AnabaticEngine::_loadGrbyNet(), reset the AutoSegment
"short net" and "analog mode" creation flags between two different
nets.
* New: In Katana::Configuration, added dedicated ripup for short net
segmnts.
* New: In Katana: partially implemented support for "short dogleg", that
is dogleg that are always kept in same metal because they connect
neighboring perpandicular tracks. Not finished neither activated
yet.
* New: In Katana::TreckElement and derived, export the the *short net*
support from AutoSegment.
* Bug: In Katana::RoutingEvent::_processRepair(), when a segment is
successfully inserted, re-process any perpandicular that is in
repair state, as it may have a new chance to be placed.
* New: In Katana::SegmentFsm::slackenTopology(), always reject short nets.
* Bug: In Katana::Track::check(), correctly handle wide segments instead
of issuing false check messages.
* New: In Anabatic::LayerAssign, a new mode "LayerAssignNoGlobalM2V" has
been added to manage the 3 routing metal technologies like AMS 350nm.
The standard cells have all their connectors punctual and aligned on
an horizontal line in the middle of the Cell. This is a design
inherited from the channel routing times that makes global routing
in metal2 *through* a standard cell almost impossible (except for
directly neighboring cells). Thus, the layer assignment must move
up all the metal2 that span more than two GCells.
* Change: In Katana::Manipulator::ripupPerpandiculars(), when a perpandicular
has a fixed axis and it's (sole) underlying track is taken, ripup
the other segment to ensure the perpandicular interval will be free.
We need to do that, because in DataNegociate::update(), if the
perpandicular is taken, the perpandicular interval will always been
empty preventing the segment to have a valid track span (so directly
failing).
* Change: In Katana::SegmentFsm::conflictSolveByPlaceds() the fixed axis
segments must also been taken into account as conflicts.
Also correct a small bug, the first conflicting segment in the
interval was not taken into account correctly.
* Bug: In Anabatic::AutoSegment::_changeDepth(), GCells under the segment
must be invalidated in order for the density to be recomputed.
But we were using GCell::invalidate() which is meant for the quad-tree
and graphic system, so the density almost never updated in case of
a layer change, leading to over-congested GCells in the top layers
(110% !).
Now we directly set the Invalidated flag.
* Change: In all tools supplying documentation, as we use some specific
software to create the doc, they may not be available, or worse, be
and incompatible version. So, by default, we install the files shipped
with the git repository. To force a full doc rebuild, use the "--doc"
flag of ccb.py.
* Change: In Anabatic::setupPreRouteds(), routed DeepNets can have
components both at Occurrence root net devel and at top level.
If no nets remains to route, set the tool state to EngineDriving,
which prevent any further work (except for finalize).
* Bug: In Anabatic::Dijkstra, the degree of a vertex (the number of neighbors
belonging to the same net) was miscalculated. This was leading, in the
materialize step to some feed-through vertexes not being broken.
Leading in turn to incomplete transformation of the detailed routing.
Also in _trackback(), the degree of the first vertex we were backtracking
from was not incremented.
* Bug: In Anabatic::Dijkstra::materialize(), systematically use
GCell::breakGoThrough() on both source and target. This is needed when
we are in the ripup phase as both source and target can be go-through.
This was also leading to incomplete detailed routing transformation.
* Change: In Anabatic::Edge::ripup(), ripup one third of the segments instead
of thoses exeeding the global length threshold. This way we are sure to
desaturate an edge. Needs to be further calibrated.
* Change: In Aanabatic::GCell::breakGoThrough(), no longer return NULL.
Return existing gcontact if any. Break if it is a go-through and create
a new gcontact in last resort. Maybe rename this function.
* New: In Anabatic::Configuration, new parameters:
- anabatic.edgeHScaling, to adjust the length of the horizontal edges
relative to the vertical ones (this is a ratio).
- anabatic.globalIterations, set the maximum number of ripup passes
of the global router.
* New: In CRL/etc/*/kite.conf, added new parameters anabatic.edgeHScaling
and anabatic.globalIterations.
* New: In Katana::GlobalRoute::DigitalDistance, take into account the new
edgeHScaling factor. Must be used when the capacity of V-edges differs
greatly for H-edges (case of AMS 350nm c35b4 for instance).
* Bug: In Katana::GlobalRoute::DigitalDistance, the historic cost is
computed for an edge length of "1". Must be multiplicated by the
current edge length to have any measurable effect.
This bug is finally explaining why the ripup was producing the
same solutions over and over, the historical cost was negligible!
* Change: In Anabatic::GCell::doGrid(), the GCell where square using the
slice height as side. This was leading to vertical edges with slightly
different capacities when the vertical picth was not a multiple of
the horizontal one. This was not a bug per se as the global router
is able to manage any interval.
Now the horizontal side is rounded on the slice step.
* Bug: In Anabatic::AutoSegment, Anabatic::AutoContact and derived
classes, the recursive invalidation mechanism did have cross-call
troubles.
- The various AutoContact::_invalidate() now take the flag into
account instead of resetting it. This is for Flags::Topology
to be passed along from segments to contacts.
- In AutoSegment::invalidate(), do not invalidate S/T contacts
already invalidateds. In the same way, do not invalidate
aligned segments already invalidateds (save some recursion).
- In AutoSegment::_changeDepth(), call invalidate with
Flags::Topology (to force contact update) and Flags::NoCheckLayer
to avoid disgraceful warnings.
* New: Anabatic::NetBuilder::_do_xG_1M1() with (x >= 2) new set of
optimized topologies when there is multiple globals but only one
terminal. The default one was making two connections to the same
RoutingPad, which was making clutter.
* Bug: In Hurricane::Cell::uniquify(), a set<Cell*> sorted on pointers
was remaining. Now sorted on Entity::Id.
* Bug: In CRL::VhdlEntity, in the driver, the components where driven
in pointer order (set<> again). Now use ids.
* Bug: In CRL/etc/scn6m_deep_09/technology.conf, the symbolic extentions
for VIAs and layers were wrong. Have to be multiplied by two.
* Change: In AnabaticEngine, AutoContact and AutoSegment LUTs are now
sorted on Entity::Id. Should not have had any impact, but better
safe than sorry.
* Change: In KatanaEngine, Symmetric contraint map<> is now sorted on
Entity::id. Idem for TrackSegmentLut.
* Bug: In Anabatic::NetBuilder::singleGCell(), in HV mode, check if the
two adjacent metal1 pins at least share a vertical span. If not,
create a dogleg.
* New: In Hurricane::Entity, add an id counter limit and a memory size
limit. The two limits are checked only when a new Entity object is
created. This should help avoiding massive memory links.
* New: In CRL Core, add a "crlcore.groundName" and a "crlcore.powerName"
parameter to specify the name of the ground/power signals to be
created if they are missing in a Cell. For Alliance libraries it
would be "vss" & "vdd" (default values), but for real technologies,
it is often "gnd!" & "vdd!".
The Blif parser is modificated to make use of it.
* Bug: In AnabaticEngine::unify(), set the resulting unified segment in
the center of the GCells common side. Gcells under a segment are
found by using the edge that cover the segment axis. When we have
a "bend" GCell stack and the axis is wrong, they could be ommited.
This was causing deleted segments to be not removed from some
Edges, then core dump.
* Change: In Anabatic::AutoSegment::create(), smarter choosing of the
reference contact, select the fixed or terminal one instead of
always the source one.
* New: In Anabatic::Edge::isEnding(), new function to check if a
segment going through an Edge is starting/ending in either source
or target GCell of the edge (active only when running in channel
mode).
* New: In Anabatic::Edge::add(), a segment takes part in the occupancy
only if it is not ending in either source or target (channel mode
only). The occupancy due to terminal is pre-computed in Katana.
* New: In Anabatic::Edge::ripup(), in channel mode, never ripup a
segment which is ending in either source or target (we *have* to
access this edge to connect to the terminal).
* Bug: In Anabatic::GCell::hcut() and vcut(), force the update of
the Edge which is on the side that will get splitted by the cut.
It's capacity will be reduced to it must be updated.
* Change: In Anabatic::GCell::updateGContacts() add a flag to conditionnally
update horizontals or verticals only. We may require only a partial
update when resizing the GCell in only one direction.
This, again, related to the fact that we compute the GCells under
a segment thanks to it's axis position, so we need to be very careful
when modificating axis.
* Change: In Katana::Block::resizeChannels(), only update GContact vertical
position. Do not disturb X positions of segments.
* Bug: In Katana::GlobalRoute::DigitalDistance, in channel mode, some
Edges can have a zero capacity, but still be reachable if the net has
a terminal in either source or target. Look for this case and return
a distance of zero instead of "unreachable". This was causing the
global routing not to complete in channel mode.
For computing the edge distance, makes the vertical edges much more
long (10 times) than the horizontal ones as the vertical capacity is
very limited. Hard coded for now, should make it a parameter in the
future.
* Change: In KatanaEngine::annotateGlobalGraph(), decrease the capacity
of edges with reserveCapacity for each terminal inside a GCell.
Both north and south edges are decreased as we a terminal will
block both north and south edges.
As a counterpart, the Edge capacity is not decreased when the
global router connect to a terminal.
* Change: In Katana::RoutingEvent::revalidate(), when in repair stage,
do not expand the slack for horizontal segments in channel mode.
So they may not overlap the standard cell row.
* Bug: In Stratus documentation, do not use the french option in babel,
the documentation is in english!
* New: In Documentation, added Hurricane/Python tutorial, part for drawing
layout.
* New: In Anabatic::Edge::ripup(), sort edges to ripup by decreasing
length so the longest gets riped up first.
In two metals mode, ripup all segments *except* those who have
terminal contact in the GCell, because they must use it anyway.
* Bug: In Anabatic::GCell::getEdgeAt(), the size hint flag was not
correctly selected, leading to the use of an edge in the wrong
side. So deleted segments where not deleted from their edges,
leading to core dump. Don't understand how it can have not shown
until now.
* New: In KatanaEngine::annotateGlobalGraph(), for two metal gauges,
decrease the edge capacity on both north and south side for each
terminal in the GCell. As a terminal must be accessed through
north or south it blocks the whole vertical track (hence both
edges).
* Bug: In Anabatic::AutoHorizontal::_makeDogleg(), do not take into
account dragging constraints from perpandiculars if the terminal
is from a analog Device. We can never drag over it as it is
forbidden.
Same modification for AutoVertical.
* Bug: In AnabaticEngine::loadGlobalRouting(), call relaxOverconstraineds()
only if we are *not* in two-metal mode.
* Bug: In NetBuilder::construct(), allow any number of globals (up to 6)
when in two-metal mode. Should be sufficent for now.
* New: In AnabaticEngine, new method _updateGContacts() to re-compute
the positions of the global routing contacts *after* a GCell
resize.
* Bug: In Katana::Block::resizeChannels(), must call _updateGContacts()
after the resize to properly shift their positions.
* Bug: In Anabatic::AutoSegment::computeOptimal(), the "side stack"
computing the intersection of all the sides of the GCell that the
segment is going through was implicitly supposing that the
resulting intersection wasn't empty. But for analog segment, we
compute the position of all the segments linked though simple
doglegs, and as dogleg occurs there can be a sufficient shift
so the intersections of all the sides became empty.
Now the "side stack" can manage configuration when instead
of having an intersection we have a "hole" in the GCell side
span (only one hole is supported at the moment). When a hole
is present, the optimal position is the center of the hole.
Should be refined so that the position is computed according
to the longest GCell that we go through.
* Change: In Katana::SegmentFsm::_slackenGlobal(), when slackening
a global from a ananlog net, allow to make a dog leg once
instead of immediately moving up. The break point is the center
of the segment.
* Change: In Katana::Manipulator::Makedogleg(DbU::Unit) if the break
position is over a device, choose the left of right GCell.
* New: In Anabatic::EdgeCapacity, dedicated object to manage the capacities
of an edge by layer. This needed now because with real technologies
layers capacities differs (unlike with symbolic technologies).
This object is separated to be shared between Edges with identical
characteristics (direction+interval). Deletion is automatic and
done through refcounting. All the already allocateds EdgeCapacity
are kept into a set in the AnabaticEngine (key is (direction,interval)).
* New: In Anabatic::Edge, capacities are stored in a shared EdgeCapacity
object. The total capacity can be annotated (i.e. decreased).
EdgeCapacity attribute is created during the materialize() call.
The capacities are computed at this time.
The incCapacity() function is renamed in reserveCapacity().
* New: In Anabatic::AnabaticEngine, added attribute _edgeCapacitiesLut
to store the shared EdgeCapacity.
Lookup/Creation of an EdgeCapacity is done through _createCapacity().
* Change: In Anabatic::Constants, rename Flags::IllimitedCapacity into
Flags::InfiniteCapacity. Add Flags::NullCapacity (both for Edges).
* Change: In Anabatic::GCell, implement a by depth (for layer) getCapacity().
This modification did expose a bug in the density calculation :
per depth density where divided by the complete density instead of the
density's depth. This was leading to greatly underestimated densities.
Thoses underestimations where preventing Dijkstra and layer assignement
to manage congestion correctly (in fact, it was acting as if there
never was congestion).
Also avoid a divide by zero (thus -NAN showing in densities).
* Change: In Anabatic::GCell, rename setEdgeOccupancy() into the more
accurate forceEdgesCapacities().
Note for Eric: only the first Edge on each side has it's capacity
forced. What if there's more than one Edge ?
* New: In Commons, inspector support for std::pair<T,U>.
* New: In Hurricane::Layer, ContactLayer & ViaLayer, support for non
square VIAs. The hole (cut) remains square, but the various metal
extensions can now be different in X and Y. The ::getEnclosure()
method now takes a flag EnclosureH / EnclosureV.
* New: In Hurricane::DbU, inspector support for:
std::pair<DbU::Unit,DbU::Unit>
std::array<DbU::Unit,3>
Must be defined here as DbU do not exists yet in Commons.h
* Bug: In Hurricane::Interval::getSize(), when the interval is "full span",
do not return the difference between min and max, but directly DbU::Max.
(the previous result was -1 !)
* New: In CRL Core Python/Technology.py, support for non square VIAs in
the configuration files. Applied to FreePDK 45.
* New: In CRL::RoutingGauge, added a "symbolic" flag to tell if a gauge
is for symbolic layout or not. Exported to Python.
* New: In Anabatic::AutoHorizontal::updatePosition(), differentiated
computation for soure or target taking account of the VIA extension
in the right segment metal (due to non-square VIAs).
* Change: In Anabatic::AutoHorizontal::_makeDogleg(), the dogleg is
UP for HV gauges and DOWN for VH.
* New: In Anabatic::AutoSegment::_initialize(), create a cache of the
various extension length for each layer (viaToTop, viaToBottom,
viaToSame).
New implementation of getExtensionCap() using the previous cached
extension table. See updatePositions().
New static functions to access the extension cache in the header:
getViaTotopCap() ...
* Change: In Anabatic::AutoSegment, in various update methods, updateOrient()
must always be called *before* updatePositions() as extensions are
dependant on source/target.
* New: In Anabatic::AutoSegment::getEndAxes() compute the position of the
first source and last target position (center/axes) on an *aligned*
set of segments.
* New: In Anabatic::AutoSegment, add a new state flag SegAxisFixed to
signal segments that can be put on only one track. Specific case
to VH gauge for a M1 vertical terminal with a M2 vertical segment.
The M2 is effectively bound to the M1 axis position.
* Bug: In Anabatic::NetBuilderVH::_do_xG_xM1_xM3(), in case of E/W global
and only one RoutingPad the connexion to the RoutingPad was duplicated.
It was valid, but totally stupid.
* Bug: In Anabatic::Session::_canonize(), for an aligned segment set,
intersect the user constraints from all segments instead of only
considering the canonical one.
Issue a warning about too tight constraints only for symbolic
gauges. It may be correct for the real ones.
* New: In Katata::DataNegociate::update(), more accurate computation
of the perpandicular free interval. Use segment extension cap
calculation. Create a special case for fixed axis segments allowing
them to find alternative free interval, try under source and under
target as they are likely to be draggable segments.
* Change: In Katana::Manipulator::relax(), use the extension cap value
to compute the axis of the perpandicular segemnts.
* Change: In Katana::Manipulator::moveUp(), now move up the whole set
of aligned segments instead of just the canonical one.
* Change: In Katana::NegociateWindow::loadRoutingPads(), more accurate
TrackMarkers insertions for fixed terminals.
* New: In Katana::RoutingEvent::Key::Compare::operator(), segments with
fixed axis are processed prior to any others.
* New: In Katana::RoutingEventLoop, store segment pointers instead of
ids to generate more accurate error messages.
* Change: In Katana::RoutingPlane::create(), perform local track
assignment only for HV gauges.
* Change: In Katana::SegmentFsm::_slackenLocal(), add a "dragMinimize"
step in the automaton. Mutliple states transitions can occurs in
a row if an action fails.
* New: In Katana::Session::_toIntervalAxis(), normalize interval
bounds so they are on track positions (by shrinking the interval).
* Bug: In Katana::TrackMarker CTOR, the weigh computation was wrong.
* New: In Anabatic & Katana, add the new "drag" feature.
With VH gauges used by real technologies (M1-H, M2-V, M3-H) a new
routing configuration that was not efficiently handled did appear.
While the preferred routing direction for metal1 is officially
horizontal, due to the way the standard cell must be designed,
their metal1 terminals are still verticals (or punctuals).
Thus, when connecting to them, we face the case where the metal1
terminal (RoutingPad) is vertical *and* the metal2 wire is also
vertical. With that setup, the position of the AutoContactTerminal
via12 cannot be deduced, it may range all the way over the
metal1 RoutingPad. What may define it's position is the metal3 the
metal2 finally connects to. That, is, when we have one horizontal
(the metal3) and one vertical (the metal1 RoutingPad).
The intermediate wire of metal2 can be kept to a minimum size
by "dragging" the via12 close to the via23 when the metal3 wire is
moved.
* New: In Anabatic & Katana, problem of closely vertically aligneds
RoutingPads in metal1 is managed first in PreProcess by restricting
the span of the connecteds metal3 and in _makeDogleg also by restricting
the span even more tightly (to the RoutingPad itself).
* New: In Anabatic::AutoContactTerminal, add the "drag" support.
Automatically check if the connecting segment is in the same
direction as the RoutingPad, if so, sets the "SegDrag" flag.
The dragging state can be known with the "::canDrag()" predicate.
* New: In Anabatic::AutoHorizontal, add the "drag" support.
The drag state can be known with the "::isDrag()" predicate.
In "::_makeDogleg()", when making a dogleg on a dragable segment
pass the drag state correctly and restrict the perpandicular span
of the perpandicular to the RoutingPad (though segment user constraints).
If we make a dogleg on the metal2 is it likely than we cannot go
straigth out vertically from the RoutingPad, so the new perpandicular
*is* restricted to the RoutingPad span.
Idem for AutoVertical.
* New: In Katana::Manipulator, add method "::dragMinimize()" which find a
hole where to minimize a draggable segment. We finally did not use it,
but keep it for potential further use.
* New: In Katana::PreProcess, adds a "protectAlignedaccesses()" local
function to check for vertically aligned metal1 RoutingPads, in that
case setup user constraints on the metal3 segments so they cannot
completly cover the other RoutingPad with metal2.
We also keep a "metal2protect()" function that create a fixed segment
to lock/protect a RoutingPad. Not used for now.
* New: In Katana::Session, add a RoutingPad locking event mechanism.
This allows us to request the creation of a locking (fixed segment)
over a draggable segment. Not used for now.
Lock events are processeds before all others as they create new
TrackElements.
* New: In Katana::Track, "::getNextFree()" and "::getPreviousFree()"
method to find the nearest free interval in a Track after/before a
position.
* Bug: In Anabatic::AutoHorizontal::getConstraints(), merge with user
constraints *only* if it's not an empty interval (as we use min/max
functions). Idem for AutoVertical.
* Bug: In AutoSegments_OnContacts::Locator::isValid(), the boolean test
must be inverted. Seems it never worked, but we never used it until
now...
* Change: In Anabatic::GCell::doGrid(), remove the "3 slice height"
limit (for small digital analog blocs).
* Bug: In Anabatic::NetBuilder::setStartHook(), perform a check for
a RoutingPad still on a Plug. Diplay an error instead of crashing.
* Bug: In CRL::RoutingLayerGauge::getTrackIndex(), the upper bound
of the track interval must be included instead of excluded.
* New: In Hurricane::Cell, add a StayOnPlugs flags for flattenNets().
To keep the RoutingPad occurrences on Plug instead of selecting
physical components.
* New: In Isobar::PyNet, add setAutomatic() and isAutomatic() to the
interface.
* Bug: In Katana::protectRoutingPads(), do not create protections on
PinOnly layers (mostly metal1).
* Change: In Anabatic::AutoContactTerminal::getNativeConstraintBox(),
when the anchor is a RoutingPad (which must be always the case),
perform the true computation of it's position based on the
segment occurrence. It is a important change, previously the
area was in fact the "center line" of the connector while now
it is really an area (mandatory for "half-offgrid" terminals of
real technologies).
The change is not complete yet, the area should be shrinked
by the half size of a VIA, because the area applies to the center
coordinate of the VIA (to be done quickly).
* Bug: In Anabatic::AutoContactTurn::updateTopology(), when a dogleg
is created (restore connexity after a layer change) the layer of
the VIA, based on the segments it connects to must be re-computed
*after* the dogleg has been made.
* Change: In all files of Anabatic, when comparing two layers, no longer
use the Layer pointer itself, but the layer mask. This allow a
transparent management of both real and symbolic layers (which
do share the same mask). Real metal layers (not VIAs) will be
BasicLayer and symbolic metal layers will be RegularLayer.
* New: Anabatic::Configuration::selectRpComponent(), select the best
RoutingPad component for metal1 terminals. Look for the metal1
component with the biggest accessibility on-grid.
RoutingPad using other metals are left untoucheds.
* New: New function Anabatic::Vertex::getNeighbor(Edge*) to get the
neighbor Vertex through an Edge*. This method allows to write
clearer code as we no longer need to access the neighbor through
the underlying GCell.
Also add proxies for GCell methods in Vertex.
* Bug: In Anabatic::Dijkstra::_toSources(), in the ripup stage, when
a component with multiples vertexes is reached *and* two of it's
vertexes are reached *at the same time* (one from which we backtrack
and one still in the queue) extraneous edges may be created by
_materialize(). Case occurs on snx/c35b4, "abc_5360_n903_1".
To solve this, Dijkstra::_toSource() is modificated, the "from"
edges of the newly reacheds vertexes are reset to NULL, *except*
for the one we will be backtracking from. That is, the one given
in the source argument.
* Change: In Anabatic::NetBuilder class, put the various Hooks and
RoutingPad sorting functions as class ones.
* Bug: In AutoSegment::setLayer(), raise the SegInvalidatedFayer flag.
This unset flag was causing AutoContactTurn::updateTopology()
to not work as expected and making gaps, this was the cause of
the last remaining warnings about layer connexity.
* New: In Anabatic::NetBuilder, set all the attributes as private and
create accessors and mutators.
Finish virtualising all GCell build methods and transfer them
into the NetBuilderHV class.
Build methods now return a boolean to tell if the GCell was
processed or not, to allow cascading in the "big switch".
Reorganise the "big switch" in separate sections only partially
cascading.
Truly fuse the *big switch* for channel routing and over-the-cells.
Create a new method "_do_globalSegment()" to delagate the
drawing of global segments between two GCell to the derived classes.
* New: In Anabatic, rename GCellTopology to NetBuilder, expose the class
(no longer in a local namespace).
NetBuilder become a base class performing the walkthrough the Net
tree. Derived class are tasked to build routing for specific gauge.
NetBuilderHV is created to manage all gauge with metal2 horizontal
and metal3 vertical.
In our terminolgy we consider that the first routing metal is
metal2. Metal1 is used inside the standard cells.
* New: In CRL Core, AllianceFramework::getCell(), adds a new Catalog::State
flags to request the loading of a "foreign" cell. That is, a Cell which
is *not* in the Alliance libraries, but in *any* library starting from
the root library. This is a temporary hack to allow the Blif parser to
run.
* New: In CRL Core, RoutingGauge::getHorizontalGauge() and
RoutingGauge::getVerticalGauge() to avoid relying on either metal names
or depth to know the vertical and horizontal default routing
informations. They return the metal layers gauges *closests* to the
substrate which are likely to have the lesser pitch.
* New: In CRL Core, BlifParser, new configuration parameters:
"etesian.cell.zero" & "etesian.cell.one" to figure out what are the
tielow and tiehigh cells (instead of having the ones from sxlib
hardwired).
* New: In Etesian, add support for non-square routing pitchs, that is,
the lowest vertical and horizontal pitches are not equal. Needs to
work with two pitches (H & V) instead of one.
The Configuration associated class now also provides the
RoutingGauge (not only the CellGauge).
Use a new Configuration setting "etesian.feedNames" to set up
the names of the filler cells. This a string of comma separated
cell names.
* New: In Anabatic, Session::_getNearestGridPoint(), use the new
non-square grid scheme.
* New: In AnabaticEngine::invalidateRoutingPads() this method is a temporary
workaround for a Hurricane problems. When an instance is moved, the
RoutingPads that use it must be moved accordingly, but they are not
invalidated so they stay in the wrong QuadTree.
New method ::_resizeMatrix() to be called when the associated Cell
is resized.
* Bug: In AutoHorizontal::getConstraints() and AutoVertical::getConstraints(),
the *target* constraints where never merged.
* Change: In AutoHorizontal::getCells() and AutoVertical::getGCells(),
now return a boolean to tell if it was ok (must not encounter a NULL
GCell while progessing from source to target).
* New: In Anabatic::Configuration and Anabatic:Session, create new methods:
- getDHorizontalLayer()
- getDhorizontalDepth()
- getDHorizontalWidth()
- getDHorizontalPitch()
And so on for Vertical and Contact.
They supply depth-independant informations about the H/V layers to
build the initial detailed routing.
The AutoSegment::create() methods have been modificated accordingly.
* New: In Anabatic::GCell, add two new types "StdCellRow" and "ChannelRow"
for implementing 2-Metal blocks.
Rename the GCell::setXY() method in GCell::setSouthWestCorner(),
move the contents of GCell::updateContactsPosition() into it and
suppress it.
WARNING: In case of a GCell shrink this may cause problems. But for
now we only expand...
New method GCell::getNetCount() to count the number of Net going
though the GCell.
* Change: In Anabatic::Edge, add specific support for capacity of 2-Metal
routing channels.
* Change: In Anabatic::Dijsktra various methods, replace the "gcell->isMatrix()"
calls by "not gcell->isAnalog()". Add more check so that the methods
pertaining to the analog routing (GRData) are not called in digital
mode.
* New: In Anabatic::Dijkstra::materialize(), add support for 2-Metal specific
cases. That is, always break in case of vertical pass-through or
U-turn. The global routing must always be broken in H-Channel.
* New: In Anabatic::GCell & Anabatic::Edge, make use of the Session mechanism
to ensure the revalidation. The "::revalidate()" method is then moved
as "::materialize()" (overload of Go) and "::_invalidate()" becomes
"::invalidate()"
* Change: In LoadGlobalRouting, cosmetic rename of SortHkByX in SortHookByX.
* New: In GCellTopology, added support for building 2-Metal topologies.
* ForkStack is now an object attribute as many methods do need it.
* To push segments/hook on the stack, a new method "push()" is
available. Perform NULL and fromHook checking. Can also setup
_southWestContact or _northEastContact if it is the "from" edge.
* N/S/E/W edges are now vector as in digital channel mode there
can be more than one.
* Added build topological build methods:
- doRp_2m_Access() RoutingPad stem access.
- _do_2m_1G_1M1() North or south access.
- _do_2m_2G_1M1() North AND south access.
- _do_2m_xG() H-Channel routing.
* New: In Anabatic::Matrix, new ::resize() function, as Cell can be resizeds.
* New: In Anabatic::Vertex, new static method ::getValueString() for a
friendly text rendering.
* New: In Katana::DigitalDistance, support for channel routing.
* Change: In KatanaEngine::digitalSetup() and KatanaEngine::runGlobalrouter(),
for channel routing, calls to setupPowerRails() and
protectRoutingPads() must be called after the core block has
been fully dimensionned.
::runGlobalrouter() contains the code tasked with the grid creation
and channel sizing.
* New: In KatanaEngine: Added support for core block, for 2-Metal routing.
May be expanded for over-the-cell routing in the future.
Added methods :
- isDigitalMode()
- isAnalogMode()
- isMixedMode()
- isChannelMode()
- getBlock() / addBlock()
- setupChannelMode()
- createChannel()
* New: In Katana, new class Block to manage core blocks and perform
channel routing.
* New: In Katana::Session, new convenience method "isOpen()".
* New: In Anabatic::AutoContact and the derived classes, manages wide
wires. The contact self dimension itself according to the segments
it is connected to. Special case for the AutoContactTerminal which
also read the size of the component it is anchored upon.
New refresh method "updateSize()" and flag CntInvalidatedWidth.
to compute the size.
In AutoContactTerminal, compute the constraint box according to
the width of the segment.
* New: In Anabatic::AutoSegment, flags are now implemented as "static const"
attributes of the class. The flags are stored into a uint64_t as
they are more than 32.
Added new flag "SegWide" and associated predicates.
* Change: In GCellTopology::_doHChannel() and GCellTopology::_doVChannel(),
uses the simpler overload of AutoSegment::create() in order to detect
the wire width automatically.
* New: In Katana::Manipulator, split insertToTrack() and forceToTrack()
into a one-track method and a segment level method that iterate over
the track span of the segment.
* New: In Katana::SegmentFsm, for each cost in the table, now allow access
to a specific track. So the base functions have now two parameters:
"icost" and "itrack" (has a cost can have multiple tracks in the case
of wide segments).
* Change: In Katana::TrackElement, remove the index of the element inside
it's track, as for a wide segment it will not be meaningful for the
non-base track. This means that we have to use the Track::find()
method each time instead.
Remove the wide flag, as it is a duplicate of the one in AutoSegment.
Added a getTrackCount() method to tell the number of track the
segment is inserted into. Needed in the Track destroy step to delete
a segment only when the last track that refers it is destroyed.
Added getSymmetricAxis() to correct the computation of the symmetric
base track in case of wide segment as the base track is not centered
but the the leftmost one.
* Change: In Track::insert() insert wide segments in their whole track span.
* Change: In TrackCost, create an array of costs according to the segment
track span.
* Change: In TrackSegment::create(), now activate the factory and create
wide segments.
* Bug: In Katana::AutoSegments_Perpandicular, correct the debug indentation
problem (ever shifting to the right).
* New: Occurrence_Contains filter that tells if an instance is part of
an Occurrence. Checks for two cases:
- The Instance is part of the *path* of the Occurrence.
- The Instance is the associated entity itself.
* New: In Cell::flattenNets() adds a new parameter Instance* to
allow partial flatten of one instance only.
* Bug: In Anabatic::Disjstra::_materialize() check that the
NetRoutingState exists before trying to access it...
in Dijkstra.cpp/.h, Edge.cpp/.h, GCell.cpp/.h:
*Change: GlobalRouting wires can have different wires' width. One Net's wires has one width only.
in NetRoutingProperty.cpp/.h, PyNetRoutingProperty.cpp/.h:
*New: A wire width parameter is added. It can be set through python script.
* New: In Katana::TrackCost, the TrackElement and it's optional
symmetric are now kept as attribute of a TrackCost. The cost
is completly computed inside the constructor.
TrackCost now support any mix of symmetric event and wide
segments.
The cost is now computed by adding directly to the current
one instead of creating secondaries that are merged afterwards.
As a consequence, remove all copy construction and merge
capabilities.
All the various methods used to compute the cost are renamed
"addOverlapcost()" in all the various related objects.
As a reminder, the overal cost method call is as follow:
1. TrackCost constructor on a TrackElement.
2. Call TrackElement::addOverlapcost()
3. For all Track under the TrackElement, call
Track::addOverlapCost()
4. For all other TrackElement intersecting with
the overlap interval call:
TrackElement::incOverlapCost()
5. The callback overlap function for segments
is called (defined in NegociateWidow).
Don't confuse:
- TrackElement::addOverlapCost(), which compute the cost of
inserting the segment inside a track (or a set of).
- TrackElement::incOverlapCost(), which compute the cost of
overlaping with this already inserted segment. It is the
other way around of the previous one.
* Change: In Katana::SegmentFsm, use a vector of pointer to TrackCost
instead of an object to avoid copy construction.
* Bug: In Anabatic::Dijsktra, correct the indentation in cdebug calls
(lots of them causing a big shift right).
* New: In Anabatic::TrackSegment, new helper structure SideStack to
manage a set of aligned GCells and their various sides sizes.
* Change: In Anabatic::TrackSegment::computeOptimal(), more accurate
computation of attractors from global segments and variable size
GCells using SideStack.
* Change: In Katana::DataSymmetric::checkPairing(), increase the tolerance
for misaligned symmetrics from 2 to 5 tracks (should be enough for our
narrow channel routing).
* New: In Katana::TrackSegment, add a first flag to enable locking of
priority. If it is set, calls to either "computePriority()" or
"forcePriority()" will have no effect. Added the uint32_t flags
paraphernalia.
* New: In ::computeNetPriority(), overall function to control the call
of TrackSegment::computeAlignedPriority(). The call is done from
NegociateWindow::run().
* New: Katana::TrackSegment::computeAlignedPriority(), order the
TrackSegments aligneds through doglegs to the one with the highest
priority is routed first and others progressively from him. Done by
forcing an ever decreasing priority on the aligneds ones.
The amount of decrease is small so the aligned segments got routed
(ordered) in close, if not contiguous, sequence. Priority is locked
for the order to remain.
* Bug: In Katana::TrackSegment::computePriority(), correct computation
of the priority when there is more than 10 free tracks
(a DbU::toLambda() call was missing, leading to very big priorities).
* Change: In katana::TrackCost CTOR, do not compute a distance to fixed
in the case of analog segments, this is backfiring.
Slight change of the compare function when delta differs. Seems
to improve a little.
* In Katana::AutoSegments_Aligneds, allow the the caller to select
if we are propagating through source or target only (or both).
Note that if no flag is given, it is assumed that we want to
propagate the old way on both source and target.
* In Katana::TrackElement, Katana::TrackSegment and Katana::RoutingEvent,
move the event priority from RoutingEvent to TrackSegment.
Add accessor and mutators associated in TrackElement (virtual
methods).
* Bug: In Hurricane::Interval, the ::getSize() method was returning a negative
length when the Interval was empty. Now return zero. This was causing
slight cost functions side effect when computing the overlap of a segment
with another one belonging to the same net (i.e. shareDelta)
* Bug: In Katana::AutoSegment::computeOptimal(), checks that the optimal
position for the axis is indeed inside the GCell interval.
* Bug: In Katana::DataSymmetric::getSymmetrical(Interval&), reverse the shrink
applied to GCells sides. Interval are of the type [min:max[ so after
symmetric transformation they become ]smax:smin]. Apply a correction so
that they are [smax:smin[ and could be merged with the paired interval
(the one without symmetry applied).
* Bug: In katana::TrackCost::consolidate(), the overlap (now) always positive,
and must be *substracted* to the "delta" (not *added*).
* Bug: In Katana::_computeNetOptimals(), now skip the already processeds
AutoSegments instead of re-processing them.
* New: In Katana::AutoSegment::computeOptimal(), improved computation of
the axis hint:
- For analog net, propagate through the simple doglegs to find
attractors.
- Restrict the allowed interval to the union of GCell sides and
segments constraints that are terminals.
- Consider a local as "long" if it's length exceed 20 the P-pitch.
(maybe make that a tool parameter).
* New: In Anabatic_AutoSegments collection, added a Flag to the constructors
to allow different behavior between digital and analog modes.
For "Aligneds" and "Perpandiculars" collections, now manage a new
Flag WithDoglegs to follow aligned globals through local doglegs
(for analog nets).
Adjust the log level of collections to 144 (formerly 145).
* New: In Anabatic::AutoSegment, new flag SegAnalog for segments that are
part of an analog net.
Note that with this flag, we reach the 32 bits limit...
* Change: In Anabatic::Constants, Flags are now declared as BaseFlags
objects and *not* uint64_t. This avoids overload resolution problems with
arithmetical overload of the operators.
The BaseFlags/Flags types are now completly "isolated" from the
uint64_t, it has the advantage of showing where unwanted previous implicit
conversions where occuring.
* Change: In Katana::Constants, Flags values are now of BaseFlags type instead
of uint64_t.
* Change: In Anabatic::Dijkstra, lots of log cleanup.
* Change: In Anabatic::GCell::getSide(), make the "shrink" parameter visible
to allow to substract the topmost and rightmost track for axis span
computation in AutoSegment::computeOptimal(). Used for analog mode.
* Change: In NetRoutingState, added a flag for analog mode. Use uint32_t
for the flags type.
* New: In Isobar, export the NetRoutingState and NetRoutingExtension objects.
Jean-Paul Chaput
EricLaoGitHub