* Bug: In cumulus/plugins.block.configuration.GaugeConf.expandMinArea(),
The minimal length of the segment intermediate wires where computed
for the minimal area using an integer division ( // ), which is
stupid for less than 1.0 values. They are real quantities at this
point...
This was making the DRC of ls180 failing.
Note: We don't suppress warnings due to unused variables or functions,
as we may need them later or in debug mode...
* Change: In Hurricane::DBo::~DBo, add a noexcept(false) because
constructed by default destructor of derived classes seems to
loosen it. The right solution whould be to explicitely define
all virtual destructors (too lazy for now).
* Change: In Viewer::Script, replace the deprecated
PyModule_GetFilename() by PyModule_GetFilenameObject(), Unicode
support again...
* Change: In bootstrap/coriolisEnv.py, the script was looking to
pythonX.Y (like "python2.7" or "python3.6") only. Now added
"major" only directories like "python2" or "python3".
* Bug: In Hurricane::Backtrace(), the std::regex supplied by gcc 4.8.5
seems to be buggy. So, for now, to compile on my reference system,
revert to C POSIX.
* Bug: In Anabatic::AntennaProtect, if the diode cell exists *but* the
maximum wire length for a diode is *not* defined (so zero) cancel
the diode protection instead of making a divide by zero.
* Change: In Isobar3::PyWrapper, C++ exceptions where not catcheds,
forgot to call exceptionWrapper().
* Change: In Isobar3, remove unused pyToC<>() flavor where T is a
simple pointer and the argument is also a simple pointer, does
not make sense.
* New: In hurricane/configuration, the Python/C template wrapper has
now all the needed features to mass-migrate Hurricane and the
ToolEngines.
The new Hurricane module is named Hurricane3 so it does not
collides with the old one which is still used. Will do the
same for all ToolEngines Python wrappers until migration is
complete.
* New: In unittests/python/, create very basic unit tests for the
Configuration & Hurricane new template wrapper.
Note: It is almost impossible to use valgrind on them because
it doesn't recognize correctly Python allocation mechanism.
To make it work, both valgrind & Python needs to be
recompiled with special options...
* 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.
* Change: In <tool>/CMakeLists.txt, add an USE_LIBBFD option to
enable the link against the BFD library. Latest versions seems
to have changed their API.
* Change: In bootstrap/ccp.by & builder/Builder.py, add an option
"--bfd" (and self._bfd) to enable BFD support.
In the LS180, probably due to the implementation of a small RAM
with DFFs, some leaf of the clock tree (H-Tree) got heavily
loaded (around 80 DFFs sinks). Implement an option that allow
the leaf of the QuadTree to use three buffers instead of one.
The sinks are partitionned using their angle from the center
of the leaf (trigonometric direction). CChoose the bigger angle
gaps to perform the split.
* Change: In Cumulus/plugins.block.configuration.GaugeConf, in
getNearestHorizontalTrack() and getNearestVerticalTrack() add an
offset argument to shift the position of the requested track
by a certain amount.
* Change: In Cumulus/plugins.block.configuration.GaugeConf, in
createHorizontal(), add a flag to make the source end of the
segment to "stick out". Useful when connecting to a stacked
VIA top, but using a lower layer that can be shifted.
* New: In Cumulus/plugins.block.spares.Spares, BufferPool & QuadTree,
add support for selection and management of multiple buffers at
the same time. Basically returns a list of selected buffer
instances instead of just one instance.
Added HEAVY_LEAF_LOAD flag to Spares. To be used by all tools
classes that makes use of it.
Added QuadTree.runselect(), be sure to call it between different
H-Tree operations, otherwise results will be strange.
* New: In Cumulus/plugins.block.htree.HTree, in case of heavy leaf
load, in the leaf of the tree, allocate three buffers instead
of one. Select them to form a triangle around the main one.
That is, use (i,j), (i+1,j) and (i,j+1).
Added a HTree._connectLeaf() to share the handling of the child
buffer connexions. Whether they are leaf of not and heavy or not.
* Change: Cumulus/plugins.block.Block, expand HTree support to
manage the HEAVY_LEAF_LOAD flag.
* Bug: In CRL/etc/symbolic/plugins.py, power lines around the core where
badly spaced, allowing the filler to insert a fill wire that was
causing both DRC error and short circuit.
* In Cumulus/plugins/block/macro.py, the METAL3 blokage was too narrow
on the left side, allowing use of METAL3 track too close from
internal components.
The METAL5 blockages around jumpers where also too narrow.
Thoses problems where seen with the density filler which put
wires everywhere.
* 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).
* Change: In Etesian::Slice::fillHole(), instead of cramming the home
with tix_x0 only, put one tie at both ends and fill the rest
with fill_x0. This should help the vendor density filler to
equalze.
* New: In Etesian::Configuration, add the parameter:
"etesian.tieName" (for tix_x0) as it now separate from the simple
filler cells.
* In Etesian::BloatFlexLib::getDx(), expand the "mx2_x2" of one more
pitch (2 instead of 1). The P&R was unable to allocate a critical
diode under a slice that was littered with those cells in LS180.
SPICE simulators don't like to have the same model defined twice.
As we have a "one file per model policy", then we must include the
model file only once. This is particularly critical for standard
cells. So now, the driver include all the models in the top level,
both terminals ans intermediate. And the sub-models include nothing.
We stop at the "TerminalNetlist" level.
Add an option flag througout all the Spice driver hierarchy to
convey that information.
* Bug: In cumulus/plugins.chip.libresocio, the ioPadInfos where inverting
"d" and "s" terminals on IOPadInOut. This was indirectly detected by
the DRC complaining about floating gates on the "d" connected nets!
* New: cumulus/plugins.checks, plugin providing a oneDriver() function
to check that each net has one and only one driver. This is for
Cell that are not P&R (in which it is also checked). So, typically
the chip level.
* New: In cumulus/plugins.chip.core2chip, add a call to oneDriver().
* Bug: In cumulus/plugins.chip.core2chip, clear Spice extensions after
save. Otherwise we may use an outdated Spice extension after the
P&R. This is were Net missing Spice::Bit may occur.
The structure of the driver is copied from the Vhdl one. It is not
integrated as a an AllianceFramework one but as a standalone like
GDS. For now use numerical indexes for electrical nodes but also
support strings. The nets are ordereds in reverse alphabetical
order, but a custom order can be defined, if we read the model
from an external SPICE subckt (to be done).
SPICE saving has also been added to the cumulus/rsave plugin
and the block/chip P&R one.
Protections diodes may not be able to play their role if they are
separated from their cluster by upper level layers (METAL4/METAL5).
This seems not to diminish the total number of diodes.
* New: In Anabatic::NetData, add a set of non move up segments in
the object. To tag global wires that are part of a cluster.
* New: In Anabatic::AutoSegment, add support for a SegNoMoveUp
flag. This flag is propagated through _makeDogleg() .
Used in ::canMoveUp() and ::canPivotUp().
* New: In Anabatic::NetBuilder, add NetData to the attributes so
we can extract the NoMoveUp infomation given by the antenna
protect stage.
* New: In NetBuilderHV::_do_globalSegment(), lookup NoMoveUp
information from NetData to put it in AutoSegment.
* New: In AntennaProtect(Net*), flags the RoutingPad clusters wires
as non movable up.
* New: In AnabaticEngine::breatAt(GCell*), propagate the SegNoMoveUp
flags. Based on NetData.
* Bug: In AutoSegment::canReduce(), in the repair stage, segments are
allowed to go beyond their GCell bondaries, so global segments can
end up in zero length. So now allow globals less than one P-Pitch
to be flagged as reduced.
* Bug: In AutoSegment::isMiddleStack(), systematically reject non-canonical
segment. If it is non-canonical, then is aligned with a canonical one.
Then we will perform the check on it.
There seems to be another porblem of update of the length of the
associated TrackElement, the increase of size of the non-canonical is
not taken into account. This is enough to prevent the problem to
arise but we should invsetigate further.
* Hack: In AutoSegment::canMoveUp(), prevent segment id:6378409 to be
moved up so the last antenna effect is avoided. This is not a clean
way to do it.
Jean-Paul Chaput