Commit Graph

177 Commits

Author SHA1 Message Date
Robert Taylor 56aa1b189c Use target_link_libraries correctly everywhere to avoid runtime link issues 2023-01-19 16:04:17 +00:00
Jean-Paul Chaput 96fe367cc0 Fix overlap of non-used RoutinPads in VH,2RL styles.
* New: In KatanaEngine::digitalInit(), when using a "VH,2RL" style,
    protect all RoutingPads of each net, because unlike "2RL+" style,
    the standard cell RoutingPads are not in a "below" layer only
    used inside the cell, but on the V layer. So the area of the RP,
    even if not fully used to connect, must be protected.
* Change: In NegociateOverlapCost(), when computing cost from a fixed
    or blockage, do not set the infinite flag if it's the *same* net.
* New: In KatanaEngine::protectRoutingPads(), add a new "flags" argument
    to pass on whether we want to protect the the RP candidates or just
    the non-used ones.
* Change: In protectRoutingpad(), change the formula (again) to compute
    the berth to give to a fixed segment... Should really try to
    summarize all the case.
* Change: In TrackFixedSegment::getNet(), no longer return the blockage
    net if the real net is tagged as clock.
2023-01-18 23:42:38 +01:00
Jean-Paul Chaput 9df5fc838c Support for non-stacked VIAs in Katana.
* New: In Katana::Configuration, added option:
    "cfg.katana.disableStackedVias" (default to false), so the router
    do not stack VIAs on top of each other.
* Bug: In NegociateWindow::loadRoutingPads(), create TrackMarkers using
    the right depth when the gauge starts with non-routable ones.
* New: In Track::addOverlapCost(), when disableStackedVias is active,
    uses the markers from the below terminals to tag the cost as
    "infinite", so the track *cannot* be used by the marker's net
    owner. Can be refined by checking that we are not at a segment's
    end but will do for now.
2023-01-14 22:35:57 +01:00
Jean-Paul Chaput ca41dbd5ef Support for avoidance of vertical tracks in low metal techs.
* New: In NetBuilderHybridVH::_do_1G_xM1_1PinM1(), added configuration
    to manage pins on the north/south sides for VH,2RL.
* Bug: In NetBuilderHybridVH::doRp_xG_xM1_xM3(), correct misplaced
    vertical creation (buildind invalid topologies).
* New: EtesianEngine::toColoquinte(), display histograms of the cells
    widths (in pitch) before and after bloating to get a better feeling
    of the behavior.
* New: In EtesianEngine, add support for track avoidance. Portions of
    tracks to avoid are specified by a Box, which should flat and on
    the axis of the request track. This feature is used by the H-Tree
    to clear the vertical tracks under the tree from any terminal.
* New: In Etesian::Area, Slice and SubSlice, add support for track
    avoidance. Exported to the Python wrapper.
* New: SubSlice::getUsedVTracks() to get a set of tracks blocked by
    the cell.
* New: SubSlice::trackAvoid(), shift left/rigth the cell under the
    requested vertical track. Try only to move the cell under the
    track and not it's neighbor, so it assume that there is sufficient
    space left or right of the cell.
* Bug: In cumulus/plugins.block.configuration.BlockConf, the Cfg
    parameters may be read too early from the Cfg space into the
    various sub-conf objects (like FeedsConf). Delay the reading
    of the parameters in a _postInit() functions.
      Modify Block and CoreToChip to call _postInit().
* New: In cumulus/plugins.block.configuration.BlockConf._loadRoutingGauge,
    allow the cell gauge name to differ from the routing gauge name.
* New: In cumulus/plugins.block.configuration.FeedsConf, allow to
    select the default feed to be used with 'etesian.defaultFeed'
    parameter.
* New: In cumulus/plugins.block.spares.BufferPool, allow to control
    whether or not we want tie to either side of the pool.
    (for latch up).
* New: In cumulus/plugins.block.HTree._connectLeaf(), add support
    for track avoidance.
* Bug: In cumulus/plugins.block.HTree._connectLeaf(), the TL2 contact,
   the one on the *top* auxiliary buffer seemed to have been badly
   positioned until now (too low, not using tl2Y).
     This is strange because it should have caused disconnections,
   but I didn't see it in the wiring and the regressions tests didn't
   flag anything wrong. Still a bit weird and worrying.
2022-12-13 16:02:23 +01:00
Jean-Paul Chaput 49bcdb3195 One more remains of the previous routing configuration. 2022-11-26 15:05:56 +01:00
Jean-Paul Chaput c131e7a948 Clean parameters for routing topologies. Improved 2RL- support.
Previously, the relevant NetBuilder and routing strategies where
directly guessed from the RoutingGauge traits. This is no longer
doable as the combinations increases. Now to configure both the
global and detailed router we need three "parameters" :

1. The routing gauge itself (tells which layers are in which
   directions) and how to make the VIAs.
2. The NetBuilder to use, they are identified by strings.
   Currently we support:
   * "HV,3RL+", for all SxLib derived standard cells.
   * "VH,2RL", for hybrid routing (over the cell, but terminals
     are also in the first RL).
   * "2RL-", for strict channel routing.
   * "VH,3RL+", an attempt for FreePDK 45, not optimized enough
     to be considered as usable.
3. The routing style, mostly affect the way the GCell grid will be
   built.
   * VH      : first RL is V.
   * HV      : first RL is H.
   * OTH     : Run in full over-the-cell mode (needs at least 3RL).
   * Channel : Run in *strict* channel routing mode (no routing over
               the standard cells).
   * Hybrid  : Create channels, but can use H tracks over the
               standard cells.

Thoses three parameters are partly overlapping and must be sets in
a consistent manner, otherwise strange results may occurs.

* New: CRL::RoutingGauge::getFirstRoutingGauge(), to get the lowest
    layer available for routing (not a PinOnly, not a PowerSupply).
* Change: In CRL::RoutingGauge::isHV() and isVH(), were previously
    always returning false when the gauge was 2RL only. Now, check
    on the first usable RL.
* Bug: In cumulus/plugins.block.configuration._loadRoutingGauge(),
    there was a bad computation of the deep RLs when the top layer
    was not defined. Occured for 2RL gauges only.
* Bug: In Anabatic::RpsInRow::slacken() (LayerAssign), forgotten curly braces
    in the test to skip METAL2 terminals.
* Change: In Etestian::BloatChannel::getDx(), adjust the bloating
    policy to converge on Arlet6502. Always ensure that there is
    a 50% ratio between terminal used V-tracks and free ones.
      If there is more than 80% of terminals, add one more track.
* Bug: In AnabaticEngine & KatanaEngine, KatanaEngine is a derived
    class of AnabaticEngine.  They uses Anabatic::Configuration
    and Katana::Configuration that also derives from each other.
    I though I had made one configuration attribute in the base
    class that was using the right Configuration. But no. I did
    have two configurations attributes, one in AnabaticEngine and
    one in KatanaEngine, the later "shadowing" the former. As a
    results, parameters modified in AnabaticEngine, *after* the
    initial creation of the tool *where never seen* at Katana
    level (due to it's own duplicate). What a mess.
      Now there is only one attribute in the *base* class Anabatic,
    which is created through a new virtual function _createConfiguration()
    called in _postCreate() which allocate the right Configuration
    according to the dynamic type of the tool (KatanaEngine).
      In KatanaEngine, access the configuration through the
    attribute (_configuration) and not the accessor (getConfiguration()).
* Bug: In KatanaEngine, no longer directly use the _configuration attribute
    (which is not accessible anyway) but the getConfiguration() accessor.
    The accessor perform a static_cast from the Super::getConfiguration()
    into Katana::Configuration.
      Complete cleanup of the various configuration accessors.
* New: AnabaticEngine::setupNetBuilder(), perform an early check
    of the requested NetBuilderStyle. The NetBuilderStyle is just a
    string that will be matched against the (hard-coded) supported
    NetBuilders. Then check the topological characteristics against
    the capabilities of the gauge (HV, VH and so on).
      Still a bit too hard-coded for now.
      This function has been split from AnabaticEngine::_loadGrByNet().
* Change: AnabaticEngine::isChannelStyle() renamed from isChannelMode().
* New: In Anabatic::Configuration, two new attributes to select the
    topology and routing style:
      - _netBuilderStyle to explicitely select the NetBuilder to use.
        It's a string, which is provided by each NetBuilder.
      - _routingStyle to define how the overall routing will work.
        It's a set of flags (StyleFlags):
	* VH      : first RL is V.
	* HV      : first RL is H.
	* OTH     : Run in full over-the-cell mode (needs at least 3RL).
	* Channel : Run in *strict* channel routing mode (no routing over
	            the standard cells).
	* Hybrid  : Create channels, but can use H tracks over the
	            standard cells.
* New: In anabatic/Constants, add StyleFlags to define how the router
    should operate (see above).
* Bug: In Anabatic::GCell, in CTOR, no reason to set up the HChannelGCell flag.
* Bug: In Anabatic::GCell::updateDensity(), when computing layers non contiguous
    saturation, do not systematically skip RL 0, but only if it's PinOnly.
* Change: In Anabatic::NetBuilder, rename isTwoMetal by isStrictChannel.
* Change: In Anabatic::NetBuilderHV, rename doRp_AccessNorthPin() in
    doRp_AccessNorthSouthPin(). More accurate.
* Bug: In NetBuilderHV::_do_1G_xM1_1PinM2(), the wires to connect the M1
    terminals where created *twice*. Uterly stupid, there where placed in
    overlap by the router!
* New: In AnabaticEngine, new accessors to the NetBuilderStyle and
    RoutingStyle, proxies towards Configuration.
* Bug: In Manipulator::relax(), if there are two doglegs to be done, but
    they are in the same GCell, only do one (the conflicting interval)
    is short.
* Change: In Katana::Session, rename isChannelMode() into isChannelStyle().
* Change: In TrackSegment::isUnbreakable() and isStrap(), return false
    when the base segment is a *weak global* (aligned with a global one).
* Change: In Katana::Row::createChannel(), correctly distinguish between
    *strict channel* style and *hybrid* style. Tag the GCells as std cells
    row or channels only in the former case.
2022-11-26 13:07:12 +01:00
Jean-Paul Chaput 2b870fc609 Remove obsolete dependency towards LibXml2 in CMakeLists.txt. 2022-11-07 17:36:49 +01:00
Jean-Paul Chaput ecda00e154 Adjustments in AutoSegment::canReduce() and TrackSegment::canRealign().
* Change: In AutoSegment::canReduce(), allow reduction, when in channel
    mode, for bottom connected jumpers at depth 1. Forbidden otherwise
    as it may cause problems with the terminals (in OTC).
* Change: In TrackSegment::canRealign(), allow realignement of reduced
    segments. What really needs to be checked is that it do not have
    perpandiculars in reduced state.
2022-11-03 10:36:44 +01:00
Jean-Paul Chaput 15412317ec Add a second repair stage after the realing stage of the router.
* New: In Katana::NegotiateWindow::_negociate(), if the realign stage is
    enabled, perform a second stage of repair after it. To do this we
    need to reverse the state of events marked as FailedRepair to Repair.
      We isolate the repair stage in a new dedicated function,
    NegociateWindow::_negociateRepair(). Maybe should do the same for
    each other negociate stage.
2022-11-03 00:21:51 +01:00
Jean-Paul Chaput 7c85835c8f Added partial support for Pad (component) in RoutinPad.
* New: In Hurricane::RoutingPad, added support if the supporting component
    is a Pad. The source/target positions are computed according to the
    most likely direction.
      Change the _getEntityAsComponent() function into an inline template
    _getEntityAs<T>().
      Change the flags from an enum to static const uint32_t.
* Change: In Anabatic::Configuration, use _getEntityAs<T>.
* Change: In Anabatic::Dijkstra, use _getEntityAs<T>.
* Change: In Anabatic::NetBuilder, use _getEntityAs<T>.
* Change: In Katabatic::LoadGrByNet, use _getEntityAs<T>.
* Change: In Katana::ProtectRoutingPads, use _getEntityAs<T>.
* Change: In Bora::AnalogDistance, use _getEntityAs<T>.
* Change: In Etesian::EtesianEngine, use _getEntityAs<T>.
2022-10-27 19:42:13 +02:00
Jean-Paul Chaput a6f61c1044 Update the channel routing feature to integrate with the OTC P&R.
* Update: In CRL/node600/phenitec/kite.py, update the routing gauge to
    the new format. So now we can use again SxLib-2M (channel routing
    SxLib for two metal technologies).
* Change: In CRL::BlifParser, if a master cell is not found in the
    AllianceFramework, then try in the Blif supplied libraries.
    This is used to load the zero, one and tie cells.
      Add a Blif::getCell() static function to look into the Blif
    supplied libraries.
* Change: In CRL::LefImport, sometimes there can be discrepencies between
    the LEF ROUTING layers and the Coriolis routing gauge. Now ignore
    routing layers that are *not* presents in the Coriolis gauge.

* Change: In AnabaticEngine, moved routingMode attribute from KatanaEngine,
    as some setup operations needs it.
* Change: In AutoSegment::canReduce(), allow fixed segments to be reduced
    if they are "jumpers" (turn+turn and top+top or bot+bot).
      This case arise on the edge of routing channels for fixed wires
    to connect terminals.
* Change: In AutoSegment::getTopologicalinfos(), compute differently the
    (leftBound,rightBound) interval when in channel mode.
       In over-the-cell mode, this interval is the one of the whole
    GCells under the wire. In channel mode, for fixed wires (that is,
    verticals connecteds to cells) this interval is reduced to half
    the GCell height, on the connected side of said channel.
      This allows Manipulator::_insertToTrack() to issue disantangling
    requests (push left/push right) for fixed segments that are face
    to face in the channel.
* Change: In Anabatic::Configuration CTOR, allow the cellGauge to have a
    different name from the routingGauge. Now if the cell gauge that
    should match the routing gauge is not found, fallback to the
    name set in "anabatic.cellGauge" parameter.
      Case occur when we try to match with CORE sites from LEF files.
* Change: In Etesian::Configuration CTOR, same change as in the
    Anabatic configuration.
* Change: In Anabatic::GCell::updateDensity(), never set the GoStraight
    flag in channel mode. This flag makes sense when there is at least
    4 routing layers (so we have 2 contiguous free of blockages).
* Bug: In Anabatic::Session::_getNearestGridpoint(), sometimes the nearest on
    grid point is outside the constraint box. Now force the point
    to remains inside constraints even if offgrid.

* Change: In Katana::DataNegociate::update(), perpandiculars that are
    either reduced or in non-preferred routing direction should not
    trigger a bug message.
* Change: In KatanaEngine::_check(), do not check for fixed, horizontal
    non-prefs AutoSegments in channel mode (avoid false bug display).
* Bug: In Manipulator::_forceToTrack(), slighty shrink (-1) the interval
    to free. The intersection function of intervals returns true when
    the two intervals *exactly* touches (1.vMax == 2.vMin). But in
    this specific case, they are not *overlapping* and no action
    should be taken...
* Bug: In Manipulator::_insertInTrack(), do not reject the track when
    we are overlapping a fixed vertical segment in channel mode.
    (Hmm, maybe already corrected by the previous one).
* Change: In Katana::NegociateOverlapCost(), in channel mode, do
    not put two overlaping vertical fixed segments into infinite cost.
    This happens when two cell connected verticals are face to face in
    a channel. We want them negociated the track (by shrinking their
    length) instead of excluding it right away.
* Change: In NegociateWindow::createTrackSegment(), in channel mode,
    do not attempt to create a track segment over a fixed and reduced
    AutoSegment.
      Do not attempt to put a non-preferred AutoSegment on a Track
    either.
* Bug: In RoutingEvent::revalidate(), the number of availables tracks
    was badly computed when in the pure constraint case, when there
    was only one it was reporting zero.
* Change: In TrackElements::TrackElements_Perpandicular::Locator,
    do not issue a bug when an non-pref or reduced AutoSegment do not
    have an associated TrackElement.
* Change: In TrackSegmentCost::update(), do not issue a bug when a
    perpandicular is reduded or non-pref and do not have a TrackElement.
2022-10-22 16:39:22 +02:00
Jean-Paul Chaput df1ba66c09 Fix a crash in PowerRails when a terminal is not connected.
* Bug: In Katana::GlobalNetTable::getRootNet(), when tracking up the
    net through the plug (to look if it's connected to a top level
    clock), we may encounter an *unconnected* plug.
      We where not checking that case, and went crashing. Now issue
    a warning and return NULL.
      This indicates that, up until now, we didn't encounter any
    unconnected Plug in our netlists. This did show up due to a
    building error in the SRAM Standard Cell generator.
2022-10-14 10:10:43 +02:00
Jean-Paul Chaput 82cd53b107 Display the length units in KatanaEngine::printCompletion() (unambiguous). 2022-10-13 10:54:50 +02:00
Jean-Paul Chaput c17c4c3f6e Add management for very rare segment cross blocking (ripup loop).
* New: In Katana::DataNegociate, add a "sameRipup" counter to keep
    the *consecutive* number of time a segment is put in the same
    track.
* New: In TrackSegment::setAxis(), update/reset the "sameRipup"
    counter of the DataNegociate.
* New: In TrackCost, add new flag "Blacklisted" to mark Tracks that
    have been riped up too much in a consecutive row.
      TrackCost::Compare::operator() will then sort the blacklisted
    track after the non-blacklisted ones.
* New: In SegmentFsm CTOR, raise the Blacklist flag on the TrackCost
    if the "sameRipup" is above 10. This to get away from a state
    well in the ripup.
2022-05-23 17:58:17 +02:00
Jean-Paul Chaput a94a290c9b Be a bit more lax for out of bound requests in Track::getBeginIndex(). 2022-05-21 13:19:51 +02:00
Jean-Paul Chaput 42bf5d29d4 General review & redesign of the "minimum area checking" for segments.
* Change: In AutoHorizontal::setDuSource() & ::setDuTarget() (& AutoVertical),
    check that the requested "du" is less than a pitch (this is not an
    upper bound). Issue a warning if not true.
* Change: In AutoSegment::revalidate(), when passing the previous span
    interval to expandToMinLength(), if we are in creation stage, make
    it empty because it has no sense yet and can lead to a lock in a
    too narrow span.
      Change the coupled behavior of expandToMinLength() vs.
    unexpandToMinLength(), the call to "unexpand" will be done on
    AutoSegments that are flagged with SegAtMinArea, instead of
    using the return value of "expand". This way we control across
    multiple revalidate() if a segment can be "unexpanded".
* Bug: In AutoSegment::expandToMinLength(), not only try to shift left
    if we are beyoond the max bound but also to the right if we are
    below the min bound.
      the span on the target and source were miscalculated, we must
    add the half-minimal distance to get the span inside the Track.
* Change: In AutoSegment::isMiddleStack(), rename into isNearMinArea()
    as we check for any *small length* set of AutoSegments and not
    only the one part of a middle stack. In some rare instances,
    two aligned segments can nevertheless be too short.
* Bug: In AutoSegment::reduceDoglegLayer(), when finding a reduced
    segment also reset it's duSource & duTarget because it will
    no longer be an isolated strip of metal.
* Change: In AutoHorizontal::updateOrient(), when there is a
    source/target swap, no need to exchange the dxSource and
    dxTarget extentions.
* Change: In AutoHorizontal::setDuSource() & ::setDuTarget(), check
    for du bigger than the pitch, which should never occur and
    display a warning.
      Same modification in AutoVertical.
* Change: In Track::repair(), now invalidate the shifted segments
    to ensure cache coherency with the TrackElement.
      Do not take AutoSegment in non-preferred direction into
    account, and especially do not try to resize them.
      Now, invalidate the corrected segments (see below).
* Change: In KatanaEngine::finalizeLayout(), move the track repair
    stage from here into NegociateWidow::run(). This way we avoid
    the false warning about segment overlap in the data-base final
    check. The false warning was because the AutoSegment where
    shifted but not invalidated/revalidated leading to a cache
    incoherency in the TrackElement. Now they *are* invalidated
    and updated.
* Bug: In Track::checkMinArea(), do not check for minimal area when
    a segment is overlapping a same net neighbor. To avoid false
    minimum area violation warnings.
2022-05-18 14:54:14 +02:00
Jean-Paul Chaput cd60032d9c Added direct management of macro blocks I/O pins in METAL2 & METAL3.
The decoupling of the cell gauge and the routing gauge implies that
the METAL2 & METAL3 terminals of macro blocks cannot be aligned on
the routing tracks anymore. That is, an horizontal METAL2 terminal
will not be on a track axis, but offgrid, so we no longer can use
a METAL2 horizontal segment to connect to it. Making an adjustement
between the offgrid terminal and the on-grid segment has proven
too complex and generating difficult configuration for the router.
Moreover, METLA2 terminal could be fully inside a METAL2 blockage.
So now, when the gauges are decoupled, we connect the METAL2 and
METAL3 the same way we do for METAL1: *from above* in the perpandicular
direction and using a *sliding* VIA. We assume that those kind of
terminals in upper metals are quite long.

* New: In Hurricane::Rectilinear, export the isNonRectangle() method
    to the Python interface.
* New: In CRL::RoutingGauge, add function isSuperPitched() with the
    associated boolean attribute. Set to true when each pitch of
    each layer is independant (not low fractional multiples).
* New: In AnabaticEngine, add the ability to temporarily disable the
    canonize() operation (mainly used in dogleg creation).
* New: In AutoSegment::canonize(), do nothing if the operation is
    disabled by AnabaticEngine.
* Bug: In Session::_revalidateTopology(), disable the canonization
    during the topology updating of a net. Too early canonization
    was occuring in makeDogleg() leading to incoherencies when
    performing the later canonization stage over the complete net.
    Mostly occured in the initial build stage of the net.
* New: In GCell, add function postGlobalAnnotate(), if a layer
    is fully blocked (above 0.9), typically, under a blockage,
    add a further capacity decrease of 2 on the edges. So we may
    handle a modicum of doglegs.
* Bug; In GCell::addBlockage(), removeContact(), removeHSegment()
    and removeVSegment(), forgot to set the Invalidated flag.
    This may have lead to innacurate densities.
* Change: In GCell::updateDensity(), more complex setting of the
    GoStraight flag. This flag is now set if we don't have two
    *contiguous* below 60% of density. We need free contiguous
    layers to make doglegs.
* New: In NetBuilder, now manage a current state flag along
    with the state flag of the *source* GCell. This flag is used
    to tell if the GCell needs it's *global* routing to be done
    using the upper layers (METAL4 & METAL5) instead of the
    lower ones.
* New: In NetBuilder::setStartHook(), set the state flag of the
    GCell to ToUpperRouting when processing a global routing
    articulation and one of the base layer is obstructed
    above 0.9.
      In GCell with terminals, also set ToUpperRouting when there
    are some in METAL2 / METAL3 and the gauge is not super-pitched.
* New: In NetBuilder, function isInsideBlockage(), to check if a
    terminal is completely or partially enclosed in a blockage.
* Change: In NetBuilderHV::doRp_AutoContact(), remove support for
    trying to put on grid misaligned METAL2/METAL3.
      Instead systematically access them from above.
      Do not cover with fixed protection terminals that are already
    enclosed in blockages.
* Bug: In NetBuilderHV::doRp_AutoContact(), always add the terminal
    contact in the requested GCell and not the target/source one,
    in case the terminal span several GCells.
* Change: In NetBuilderHV::doRp_Access(), create the local wiring
    according to the RoutingPad layer.
* Change: In NetBuilderHV::_do_xG(), _do_2G(),
    create the global wiring in upper layers, according to the
    ToUpperRouting flag.
* Change: In NetBuilderHV::_do_xG_xM3(), now delegate to
    _do_xG_xM3_baseRouting() and _do_xG_xM3_upperRouting() if the
    density at terminal level is above 0.5.
* New: NetBuilderHV::_do_xG_xM3_baseRouting() and
    _do_xG_xM3_upperRouting() separated function to manage the
    local routing.
* Change: In NetBuilder::_do_globalSegment(), if the currently
    processed GCell or it's source is in ToUpperRouting mode,
    move up the global segment. Do *not* use the moveUp() function
    which would create doglegs unwanted at this stage.
* New: In KatanaEngine::annotateGlobalGraph(), call postGlobalAnnotate()
    on the GCell after the blockages have been taken into accound to
    add the penalty.
* Bug: In Track::getPrevious(), correctly manage the 0 value for the
    index argument. Strange it didn't show earlier.
      Same goes for Track::expandFreeInterval().
2022-04-27 21:56:41 +02:00
Jean-Paul Chaput c41bd36279 Small code presentation improvements. 2022-01-12 16:27:47 +01:00
Jean-Paul Chaput fdce75fdad Fix bad computation of perpandicular free space in DataNegociate, again.
* Bug: In Katana::DataNegociate::update(), when computing the length of
    source & target extension on a perpandicular segment, must use the
    extensions of the *directly* connected AutoSegment (the baseSegment)
    and not the canonical one that may be different, so with unrelated
    extensions.
2021-12-25 15:23:23 +01:00
Jean-Paul Chaput 64056d25ee Layer assignment step was ignoring the number of RoutingPad threshold.
* Bug: In Anabatic::layerAssign(), during the step of desaturation of
    GCells that contains too much terminals (i.e. lot of *local*
    congestion), the desaturation threshold was har-coded to 8.
    Wich is fine for symbolic cmos but way too low for Flexlib.
      End result was that most straight wires where moved towards
    the upper layers, creating congestion (imbalance of layer
    densities).
      Now the parameter:
        * "anabatic.saturateRp" (default value:8) is correctly taken
	  into account.
2021-12-22 15:52:22 +01:00
Jean-Paul Chaput a4ad671739 Fix too naive obstacle detection on non-prefered metal2 wires.
* Fix: In Manipulator::avoidBlockage(), the dedicated function to check if
    there is an obstacle in the way of a non-prefered routing wire (done
    for metal2 connecting to terminals only) was too naive.
      We were checking the tracks for obstacles crossing exactly the axis
    of the segment. And for near-miss this is not enough. Now check on
    the whole x-span to be used by the segment.
      Code borrowed and simplified from Track::addOverlapcost().
* Change: In Manipulator::moveUp(), the default value for the extra
    reservation allowing a long wire to move up need to be customized
    for Flexlib/StdCellLib (allow successful routing of ChipFlow/MPW4).
      Add two new configuration parameters to katana:
        * "katana.longWireUpThresold1" : the length, expressed in number
	  of *slice height* above which a global wire is considered a
	  *long* wire (not close interconnect).
        * "katana.longWireUpReserve1" : the extra number of free tracks
	  that must remains free in the up layer after the move up,
	  in each GCell traversed by the wire. Expressed in number of
	  tracks, but can be non-integer (float, for instance: 1.5).
2021-12-21 16:13:31 +01:00
Jean-Paul Chaput 92e5f3fa4d Update ad-hoc patch for obstacles for Flexlib & StdCellLib.
* Bug: In Katana::PowerRailsPlane::Rail::doLayout(), to avaid tracks too
    close to an offgrid obstacle in the preferred routing direction, we
    expand the width/height of the segment by one pitch. BUT it seems to
    still be too close for Flexlib and StdCellLib, so there is an ad-hoc
    patch based on the *name* of the cell library. Update it to take
    "StdCellLib" into account.
2021-12-21 16:13:07 +01:00
Jean-Paul Chaput 3fa8d516bc Fix bad computation of perpandicular free space in DataNegociate.
NOTE: This is likely to explain why we still got overlap in the
      track coherency check in very rare occasions.

* Bug: In Katana::DataNegociate::update(), when computing the allowed
    free interval for the segment axis deduced from the perpandicularly
    connex segments, we account for the extension of the connecting
    VIA. Those extension varies according to the kind of VIA and are
    given by getExtensionCap().
      We were accounting for the source & target extension VIA on the
    parallel segments, assuming that source/target would not swap when
    the perpandicular is moved. Which is *not* true.
      Now account for the extension of the *connecting* VIA on all ends.
* Change: In AutoSegment::getTopologicalInfos(), enrich the list of
    perpandicularly connected segment with wether they are connex by
    their *source* or *target* contact. Mainly to be used by
    DataNegociate::update().
2021-12-18 17:45:17 +01:00
Jean-Paul Chaput 2ca9e162ef Allow the detailed routing to be build from non-bottom P&R layers.
* New: In Anabatic::AutoSegment::create(), allow the created segment to
    be in any supported routing layer, and not only the bottom H & V.
    Modifications impact the *two* overload of the function.
* Change: In Anabatic::NetBuilderHV::doRp_AutoContacts(), for punctual
    METAL1, the protection has to be in METAL2. Bump the layer depth
    to correctly use the updated verstion of AutoSegment::create().
* Change: In AnabaticEngine::checkPlacement(), for the Pin, check that
    it's layer is in the routing gauge before anything else.
* New: In Katana::NegociateWindow::createTrackSegment(), if the track
    nearest the segment axis (refTrack) do not exists, call a
    breakpoint just before crashing.
2021-12-11 19:51:24 +01:00
Jean-Paul Chaput 2f0bf5456d Added Etesian to the measurment system.
* Bug: In CRL::MeasureSet::toStringHeaders(), check and issue a warning
    if a measure label ends with a "." (dot).
* Change: In CRL::ToolEngine::getMeasure(), return the data measure
    by pointer instead of by reference (easier to manipulate afterwards).
* New: In EtesianEngine::place(), add the placement runtime (under label
    "placeT") to the measure set.
* New: In KatanaEngine::dumpMeasures(), add the Etesian runtime to the
    set of measures.
2021-12-11 19:47:24 +01:00
Jean-Paul Chaput df972b7250 Add Diode/Feed flags in Cell. Correct computation of Instance count.
WARNING: We are partially duplicating the informations pertaining
         to the Alliance catalog (stored in the Catalog property)
	 directly into the Cell. This is needed for Flexlib which
	 is not using the Alliance loading mechanim. Ideally the
	 Catalog information should be moved into the Cell.

* New: In Cell, add new state flags Diode, PowerFeed (in addition to
    Pad & Feed).
      Export flags setter/getter to Python. For Flexlib usage.
* Change: In AllianceFramework::getInstancesCount(), correctly skip
    Diode & Feeds based on Cell flags. Those flags must correctly
    be set in the various Flexlib_fix.py scripts.
2021-11-28 19:03:02 +01:00
Jean-Paul Chaput 01224e6a06 Forgot to disable debug in Track::repair() ... 2021-11-26 23:33:05 +01:00
Jean-Paul Chaput d8218d0698 Fix bad computation of gap in Tracks in some special cases.
* Bug: In Track::repair(), when closing a same net gap, the amount the
    "right" segment duSource must be shifted left was incorrectly
    computed in some instances.
      The previous calculation was assuming that the right edge of the
    gap was at the exact same position than the source extension.
    But when there is a non-preferred direction connected to it, this
    is wrong. Now compute the delta accounting for a difference
    between the right edge of the gap and the source extension.
2021-11-26 18:59:46 +01:00
Jean-Paul Chaput 7c0f1fcf58 Fairly compute the flat numbers of instances in a design.
* New: In AllianceFramework::getInstancesCount(), add a flag TerminalNetlist
    to stop recursion on "terminal for netlist" instance level. This is to
    avoid counting physical only or non-routed instances inside hard macros,
    like SRAM blocks. This was leading to an overstimation of the "size"
    in number of gates of the routing problem.
* Change: In KatanaEngine CTOR, call for the terminal for netlist number of
    gates...
2021-11-26 11:29:23 +01:00
Jean-Paul Chaput ca499e024c Restore the measurements taking in Anabatic/Katana.
* New: In AnabaticEngine::printMeasures(), re-enable runtime & memory
    footprint in measurements.
* Bug: In Anabatic::AutoSegment CTOR, correct computation of the initial
    number of global segments. We were relying on the "global" flag,
    which is *not* set at this stage. Now compare source and target
    GCells.
* New: In KatanaEngine::runGlobalRouter(), store H-ovE & V-ovE in
    measurements.
* New: In KatanaEngine CTOR, add the number of gates (flattened) to
    the measurments.
* New: In KatanaEngine::runNegociate(), add the number of GCells to
    the measurements.
* Change: In KatanaEngine::printCompletion(), compute the wirelengths
    in either lambdas (symbolic) or *nanometers* (real).
* New: In cumulus/plugins.block.Block, add a setting to request the
    Katana measurements dumping: "cfg.katana.dumpMeasures"
2021-11-24 15:52:56 +01:00
Jean-Paul Chaput 10bd5510da Fix library linking problem for gcc 9 and above (Ubuntu 20/Debian 11).
* Bug: In all CMakeLists.txt, it seems I was doing a worng use of
    target_link_library(). No longer add dependencies to the C++ base
    library but instead either to the Python associated module or
    to the final binaries. This was inderectly causing the linking
    problem related to Python (which was a misdirection).
* Bug: Typo in FindLibexecinfo.cmake, do not use FindLib[E]xecinfo.
* Change: In CRL/ccore/CMakeLists.txt, activate SKIP_AUTOMOC on
    bison/flex generated files.
* Bug: In viewer/PyHApplication, do not delete the C++ object in
    the Python destroy method.
2021-11-22 00:05:48 +01:00
Jean-Paul Chaput 5bf80a95d0 In Katana::Configuration::print(), display the _{h,v}TrackReservedMin. 2021-11-21 19:37:06 +01:00
Jean-Paul Chaput 247ddb3a5c Suppress wrong error message in Katana::Session::_addMoveEvent().
* Bug: In Katana::Session::_addMoveEvent(), an error message is issued if
   the segment is not *already* in a Track. But, it is not the case for
   non-preferred Segment or reduced segment and it is valid. So suppress
   the message in those cases.
2021-11-03 14:26:53 +01:00
Myrtle Shah 5b5922096a Fix 'static assertion failed: comparison object must be invocable as const'
Signed-off-by: Myrtle Shah <gatecat@chipflow.io>
2021-10-30 13:50:44 +01:00
Las Safin 6e5c03434a Adapt Nix code to Python 3 switch.
This commit also reduces the diff by not removing
some (unnecessary) error handling.
2021-10-26 20:10:59 +00:00
Jean-Paul Chaput f58212eb96 Fix incorrect application of xTracksReservedMin in Katana.
* Bug: In KatanaEngine::annotateGlobalGraph(), the minimum track reservation
    was not applied correctly. Instead of adding the *difference* between
    the minimum and the current reservation, the minimum was simply added.
    Leading to too high reservation. And loss of control about what we
    were doing on the edges capacities...
      Really stupid.
2021-10-14 23:50:14 +02:00
Jean-Paul Chaput f77741db3f In GraphicKatanaEngine, restore normal display of edges occupancy. 2021-10-07 00:32:14 +02:00
Jean-Paul Chaput 61ab4b0da6 Cleanup of CMake, again. 2021-10-01 19:29:29 +02:00
Jean-Paul Chaput 02777e127e Migration towards Python3, first stage: still based on C-Macros.
* New: Python/C++ API level:
  * Write a new C++/template wrapper to get rid of boost::python
  * The int & long Python type are now merged. So a C/C++ level,
    it became "PyLong_X" (remove "PyInt_X") and at Python code
    level, it became "int" (remove "long").
* Change: VLSISAPD finally defunct.
  * Configuration is now integrated as a Hurricane component,
    makes use of the new C++/template wrapper.
  * vlsisapd is now defunct. Keep it in the source for now as
    some remaining non essential code may have to be ported in
    the future.
* Note: Python code (copy of the migration howto):
  * New print function syntax print().
  * Changed "dict.has_key(k)" for "k" in dict.
  * Changed "except Exception, e" for "except Exception as e".
  * The division "/" is now the floating point division, even if
    both operand are integers. So 3/2 now gives 1.5 and no longer 1.
    The integer division is now "//" : 1 = 3//2. So have to carefully
    review the code to update. Most of the time we want to use "//".
    We must never change to float for long that, in fact, represents
    DbU (exposed as Python int type).
  * execfile() must be replaced by exec(open("file").read()).
  * iter().__next__() becomes iter(x).__next__().
  * __getslice__() has been removed, integrated to __getitem__().
  * The formating used for str(type(o)) has changed, so In Stratus,
    have to update them ("<class 'MyClass'>" instead of "MyClass").
  * the "types" module no longer supply values for default types
    like str (types.StringType) or list (types.StringType).
    Must use "isinstance()" where they were occuring.
  * Remove the 'L' to indicate "long integer" (like "12L"), now
    all Python integer are long.
* Change in bootstrap:
  * Ported Coriolis builder (ccb) to Python3.
  * Ported Coriolis socInstaller.py to Python3.
  * Note: In PyQt4+Python3, QVariant no longer exists. Use None or
    directly convert using the python syntax: bool(x), int(x), ...
    By default, it is a string (str).
* Note: PyQt4 bindings & Python3 under SL7.
  * In order to compile user's must upgrade to my own rebuild of
    PyQt 4 & 5 bindings 4.19.21-1.el7.soc.
* Bug: In cumulus/plugins.block.htree.HTree.splitNet(), set the root
    buffer of the H-Tree to the original signal (mainly: top clock).
      Strangely, it was only done when working in full chip mode.
2021-09-19 19:41:24 +02:00
Las Safin dcc0e6aebf
include/coriolis -> include/coriolis2 2021-08-27 16:15:28 +00:00
Las Safin c253ef4ed7
bora 2021-08-27 14:49:00 +00:00
Las Safin 72b46d7802
katana 2021-08-27 14:36:23 +00:00
Jean-Paul Chaput c6f703b1cc New parameter "katana.trackFill" to control the dummy fill ratio. 2021-06-27 20:16:42 +02:00
Jean-Paul Chaput 5a43c1465e Fix badly filled tracks containing blockages.
* Bug: In Track::repair(), consider the blockage net as any other, so
    the metal filling works correctly (correct management of transitions
    between blockage and non-blockage).
2021-06-26 14:36:59 +02:00
Jean-Paul Chaput 46c4cc98df Fill every two tracks in Track::repair() to balance metal density. 2021-06-25 15:55:59 +02:00
Jean-Paul Chaput ddc7aef13b At last make use of cdebug_log() in Track::repair(). 2021-06-17 23:36:35 +02:00
Jean-Paul Chaput f873e616cb Use of tset() manipulator instead of setw() when printing in cdebug_log. 2021-06-17 23:36:22 +02:00
Jean-Paul Chaput 2e015ea780 Prune ordinary wires in Katana::PowerRails.
* Change: In Katana::PowerRails, in TerminalNetlist cells instances,
    the ordinary nets components where generating obstacles, leading
    to stupid cross blockages between the obstacle generated by the
    component supporting the routing pad and the RP itself.
      Now only take into account supplies and clocks (any layers)
    and blockage layers.
      Fix symbolic benches.
2021-06-13 12:03:57 +02:00
Jean-Paul Chaput 63d2f69459 Increate the reluctance to go up in Manipulator::moveUp().
* Change: In Katana::Manipulator::moveUp(), the "reserve" value was
    of 0.5 for pivot up and locals, now set it to 1.0, like in all
    other cases ("reserve" is the number of free tracks that is
    needed to allow the move up, in addition the the length being
    moved up).
      Fix routing convergence on the MIPS pipeline bench.
2021-06-13 12:03:35 +02:00
Jean-Paul Chaput f9e4daace9 Comment out debug information in Track::repair(). 2021-06-12 16:17:03 +02:00