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External block wrapper support added in cumulus/plugins.macro. 

* New: In cumulus/plugins.macro.macro.Macro() to encapsulate foreign blocks.
    Round their size to an exact number of GCells and a guard of one GCell.
    External terminal must be on the periphery and will be made to stick out
    in the guard ring. This is sub-optimal for now but provide a workaround
    some Katana bad assumptions.
      A "perpandicular padding" is also added to terminals to limit the
    offgrid related problems. Have to optimize that in conjuction with
    Katana.
This commit is contained in:
Jean-Paul Chaput 2021-02-18 00:07:03 +01:00
parent 7bae6d8bad
commit d00a51029e
3 changed files with 220 additions and 0 deletions
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4
cumulus/src/CMakeLists.txt
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@ -73,6 +73,9 @@
${CMAKE_CURRENT_SOURCE_DIR}/plugins/alpha/chip/pads.py
${CMAKE_CURRENT_SOURCE_DIR}/plugins/alpha/chip/chip.py
)
set ( pyPluginAlphaMacro ${CMAKE_CURRENT_SOURCE_DIR}/plugins/alpha/macro/__init__.py
${CMAKE_CURRENT_SOURCE_DIR}/plugins/alpha/macro/macro.py
)
install ( FILES ${pySources} DESTINATION ${PYTHON_SITE_PACKAGES}/cumulus )
install ( FILES ${pyPlugins} DESTINATION ${PYTHON_SITE_PACKAGES}/cumulus/plugins )
@ -83,4 +86,5 @@
install ( FILES ${pyPluginAlphaBlock} DESTINATION ${PYTHON_SITE_PACKAGES}/cumulus/plugins/alpha/block )
install ( FILES ${pyPluginAlphaC2C} DESTINATION ${PYTHON_SITE_PACKAGES}/cumulus/plugins/alpha/core2chip )
install ( FILES ${pyPluginAlphaChip} DESTINATION ${PYTHON_SITE_PACKAGES}/cumulus/plugins/alpha/chip )
install ( FILES ${pyPluginAlphaMacro} DESTINATION ${PYTHON_SITE_PACKAGES}/cumulus/plugins/alpha/macro )
install ( PROGRAMS ${pyTools} DESTINATION bin )

0
cumulus/src/plugins/alpha/macro/__init__.py Normal file
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216
cumulus/src/plugins/alpha/macro/macro.py Normal file
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@ -0,0 +1,216 @@
# This file is part of the Coriolis Software.
# Copyright (c) SU 2021-2021, All Rights Reserved
#
# +-----------------------------------------------------------------+
# | C O R I O L I S |
# | C u m u l u s - P y t h o n T o o l s |
# | |
# | Author : Jean-Paul CHAPUT |
# | E-mail : Jean-Paul.Chaput@lip6.fr |
# | =============================================================== |
# | Python : "./plugins/macro/macro.py" |
# +-----------------------------------------------------------------+
from __future__ import print_function
import sys
import os.path
import Cfg
from Hurricane import Breakpoint, DbU, Box, Transformation, Point, \
Box, Path, Layer, Occurrence, Net, \
NetExternalComponents, RoutingPad, Pad, \
Horizontal, Vertical, Contact, Pin, Plug, \
Cell, Instance
import CRL
from CRL import RoutingLayerGauge
from helpers import trace, dots
from helpers.io import ErrorMessage, WarningMessage, catch
from helpers.overlay import UpdateSession
# ----------------------------------------------------------------------------
# Class : "macro.Macro".
class Macro ( object ):
"""
Encapsulate the layout of a user-defined block so it can be used
in the Coriolis P&R flow. Maintain a lookup table of already
processeds macros so they are modified only once.
"""
LUT = {}
@staticmethod
def lookup ( macroCell ):
if Macro.LUT.has_key(macroCell): return True
return False
@staticmethod
def getPPitch ( rg, metal ):
depth = rg.getLayerDepth( metal )
if depth < rg.getDepth(): pdepth = depth + 1
else: pdepth = depth - 1
return rg.getLayerPitch( pdepth )
@staticmethod
def place ( instance, transf, status ):
ab = instance.getMasterCell().getAbutmentBox()
abShift = Transformation( -ab.getXMin(), -ab.getYMin(), Transformation.Orientation.ID )
abShift.applyOn( transf )
instance.setTransformation( transf )
instance.setPlacementStatus( status )
@staticmethod
def wrap ( macroCell, gaugeName, hMargin, vMargin ):
"""
Encapsulate the macro cell, if not already done. Returns True
if the encapsulation actually takes place.
:param macroCell: The macro cell to be encapsulated.
:param gaugeName: The name of the RoutingGauge to use.
:param xMargin: The horizontal margin, expressed in pitchs of the
lowest vertical routing metal (usually METAL3).
:param yMargin: The vertical margin, expressed in pitchs of the
lowesthorizontal routing metal (usually METAL2).
The abutment box of the block is enlarged so both it's dimensions
are a multiple of the sliceHeight. It is then enlarged of one more
sliceHeight on each side. The resulting block will:
* Exactly fit the GCell grid.
* Eternal pins will be isolated in fully empty GCells on the side.
Due to some quirks in the P&R algorithm, putting them in GCells
that are half free and half occluded by the block itself may
cause (stupid) deadlock to appear.
"""
if Macro.lookup(macroCell): return False
af = CRL.AllianceFramework.get()
rg = af.getRoutingGauge( gaugeName )
ab = macroCell.getAbutmentBox()
sliceHeight = af.getCellGauge( gaugeName ).getSliceHeight()
westPins = []
eastPins = []
northPins = []
southPins = []
for net in macroCell.getNets():
if not net.isExternal() or net.isSupply() or net.isClock():
continue
for component in net.getComponents():
if not NetExternalComponents.isExternal(component):
continue
bb = component.getBoundingBox()
if not ab.isConstrainedBy(bb):
continue
if ab.getXMax() == bb.getXMax(): eastPins.append( component )
elif ab.getXMin() == bb.getXMin(): westPins.append( component )
elif ab.getYMax() == bb.getYMax(): northPins.append( component )
elif ab.getYMin() == bb.getYMin(): southPins.append( component )
innerAb = ab
xAdjust = 0
yAdjust = 0
if ab.getWidth () % sliceHeight: xAdjust = sliceHeight - ab.getWidth () % sliceHeight
if ab.getHeight() % sliceHeight: yAdjust = sliceHeight - ab.getHeight() % sliceHeight
innerAb.inflate( 0, 0, xAdjust, yAdjust )
outerAb = innerAb
outerAb.inflate( sliceHeight )
with UpdateSession():
for component in westPins:
NetExternalComponents.setInternal( component )
pitch = rg.getPitch( component.getLayer() )
ppitch = Macro.getPPitch( rg, component.getLayer() )
bb = component.getBoundingBox()
yAxis = bb.getYCenter()
xMax = bb.getXMin()
xMin = xMax - hMargin*ppitch
width = bb.getHeight()
horizontal = Horizontal.create( component.getNet()
, component.getLayer()
, yAxis
, width
, xMin
, xMax
)
horizontal = Horizontal.create( component.getNet()
, component.getLayer()
, yAxis
, pitch
, xMin
, xMax - (hMargin-1) * ppitch
)
NetExternalComponents.setExternal( horizontal )
for component in eastPins:
NetExternalComponents.setInternal( component )
pitch = rg.getPitch( component.getLayer() )
ppitch = Macro.getPPitch( rg, component.getLayer() )
bb = component.getBoundingBox()
yAxis = bb.getYCenter()
xMin = innerAb.getXMax()
xMax = xMin + hMargin*ppitch
width = bb.getHeight()
horizontal = Horizontal.create( component.getNet()
, component.getLayer()
, yAxis
, width
, xMin
, xMax
)
horizontal = Horizontal.create( component.getNet()
, component.getLayer()
, yAxis
, pitch
, xMin + (hMargin-1) * ppitch
, xMax
)
NetExternalComponents.setExternal( horizontal )
for component in southPins:
NetExternalComponents.setInternal( component )
pitch = rg.getPitch( component.getLayer() )
ppitch = Macro.getPPitch( rg, component.getLayer() )
bb = component.getBoundingBox()
xAxis = bb.getXCenter()
yMax = bb.getYMin()
yMin = xMax - vMargin*ppitch
width = bb.getWidth()
vertical = Vertical.create( component.getNet()
, component.getLayer()
, xAxis
, width
, yMin
, yMax
)
vertical = Vertical.create( component.getNet()
, component.getLayer()
, xAxis
, width
, yMin
, yMax - (vMargin-1) * ppitch
)
NetExternalComponents.setExternal( vertical )
for component in northPins:
NetExternalComponents.setInternal( component )
pitch = rg.getPitch( component.getLayer() )
ppitch = Macro.getPPitch( rg, component.getLayer() )
bb = component.getBoundingBox()
xAxis = bb.getXCenter()
yMin = innerAb.getYMax()
yMax = xMin + vMargin*ppitch
width = bb.getWidth()
vertical = Vertical.create( component.getNet()
, component.getLayer()
, xAxis
, width
, yMin
, yMax
)
vertical = Vertical.create( component.getNet()
, component.getLayer()
, xAxis
, width
, yMin + (vMargin-1) * ppitch
, yMax
)
NetExternalComponents.setExternal( vertical )
macroCell.setAbutmentBox( outerAb )