mirror of https://github.com/efabless/caravel.git
617 lines
22 KiB
Python
617 lines
22 KiB
Python
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#!/usr/bin/env python3
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# SPDX-FileCopyrightText: 2020 Efabless Corporation
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# SPDX-License-Identifier: Apache-2.0
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#
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# check_density.py ---
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#
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# Run density checks on the final (filled) GDS.
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#
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import sys
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import os
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import re
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import select
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import subprocess
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def usage():
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print("Usage:")
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print("check_density.py [<path_to_project>] [-keep]")
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print("")
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print("where:")
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print(" <path_to_project> is the path to the project top level directory.")
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print("")
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print(" If <path_to_project> is not given, then it is assumed to be the cwd.")
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print(" If '-keep' is specified, then keep the check script.")
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return 0
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if __name__ == '__main__':
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optionlist = []
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arguments = []
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debugmode = False
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keepmode = False
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for option in sys.argv[1:]:
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if option.find('-', 0) == 0:
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optionlist.append(option)
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else:
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arguments.append(option)
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if len(arguments) > 1:
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print("Wrong number of arguments given to check_density.py.")
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usage()
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sys.exit(0)
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if len(arguments) == 1:
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user_project_path = arguments[0]
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else:
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user_project_path = os.getcwd()
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# Check for valid user path
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if not os.path.isdir(user_project_path):
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print('Error: Project path "' + user_project_path + '" does not exist or is not readable.')
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sys.exit(1)
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# Check for valid user ID
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user_id_value = None
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if os.path.isfile(user_project_path + '/info.yaml'):
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with open(user_project_path + '/info.yaml', 'r') as ifile:
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infolines = ifile.read().splitlines()
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for line in infolines:
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kvpair = line.split(':')
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if len(kvpair) == 2:
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key = kvpair[0].strip()
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value = kvpair[1].strip()
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if key == 'project_id':
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user_id_value = value.strip('"\'')
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break
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if user_id_value:
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project = 'caravel'
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project_with_id = 'caravel_' + user_id_value
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else:
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print('Error: No project_id found in info.yaml file.')
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sys.exit(1)
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if '-debug' in optionlist:
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debugmode = True
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if '-keep' in optionlist:
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keepmode = True
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magpath = user_project_path + '/mag'
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rcfile = magpath + '/.magicrc'
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with open(magpath + '/check_density.tcl', 'w') as ofile:
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print('#!/bin/env wish', file=ofile)
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print('crashbackups stop', file=ofile)
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print('drc off', file=ofile)
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print('snap internal', file=ofile)
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print('set starttime [orig_clock format [orig_clock seconds] -format "%D %T"]', file=ofile)
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print('puts stdout "Started reading GDS: $starttime"', file=ofile)
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print('', file=ofile)
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print('flush stdout', file=ofile)
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print('update idletasks', file=ofile)
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# Read final project from .gds
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print('gds readonly true', file=ofile)
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print('gds rescale false', file=ofile)
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print('gds read ../gds/' + project_with_id + '.gds', file=ofile)
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print('', file=ofile)
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print('set midtime [orig_clock format [orig_clock seconds] -format "%D %T"]', file=ofile)
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print('puts stdout "Starting density checks: $midtime"', file=ofile)
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print('', file=ofile)
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print('flush stdout', file=ofile)
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print('update idletasks', file=ofile)
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# Get step box dimensions (700um for size and 70um for FOM step)
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# Use 350um for stepping on other layers.
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print('box values 0 0 0 0', file=ofile)
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# print('box size 700um 700um', file=ofile)
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# print('set stepbox [box values]', file=ofile)
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# print('set stepwidth [lindex $stepbox 2]', file=ofile)
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# print('set stepheight [lindex $stepbox 3]', file=ofile)
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print('box size 70um 70um', file=ofile)
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print('set stepbox [box values]', file=ofile)
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print('set stepsizex [lindex $stepbox 2]', file=ofile)
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print('set stepsizey [lindex $stepbox 3]', file=ofile)
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print('select top cell', file=ofile)
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print('expand', file=ofile)
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# Modify the box to be inside the seal ring area (shrink 5um)
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print('box grow c -5um', file=ofile)
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print('set fullbox [box values]', file=ofile)
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print('set xmax [lindex $fullbox 2]', file=ofile)
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print('set xmin [lindex $fullbox 0]', file=ofile)
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print('set fullwidth [expr {$xmax - $xmin}]', file=ofile)
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print('set xtiles [expr {int(ceil(($fullwidth + 0.0) / $stepsizex))}]', file=ofile)
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print('set ymax [lindex $fullbox 3]', file=ofile)
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print('set ymin [lindex $fullbox 1]', file=ofile)
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print('set fullheight [expr {$ymax - $ymin}]', file=ofile)
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print('set ytiles [expr {int(ceil(($fullheight + 0.0) / $stepsizey))}]', file=ofile)
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print('box size $stepsizex $stepsizey', file=ofile)
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print('set xbase [lindex $fullbox 0]', file=ofile)
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print('set ybase [lindex $fullbox 1]', file=ofile)
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print('', file=ofile)
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print('puts stdout "XTILES: $xtiles"', file=ofile)
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print('puts stdout "YTILES: $ytiles"', file=ofile)
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print('', file=ofile)
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# Need to know what fraction of a full tile is the last row and column
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print('set xfrac [expr {($xtiles * $stepsizex - $fullwidth + 0.0) / $stepsizex}]', file=ofile)
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print('set yfrac [expr {($ytiles * $stepsizey - $fullheight + 0.0) / $stepsizey}]', file=ofile)
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print('puts stdout "XFRAC: $xfrac"', file=ofile)
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print('puts stdout "YFRAC: $yfrac"', file=ofile)
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print('cif ostyle density', file=ofile)
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# Process density at steps. For efficiency, this is done in 70x70 um
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# areas, dumped to a file, and then aggregated into the 700x700 areas.
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print('for {set y 0} {$y < $ytiles} {incr y} {', file=ofile)
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print(' for {set x 0} {$x < $xtiles} {incr x} {', file=ofile)
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print(' set xlo [expr $xbase + $x * $stepsizex]', file=ofile)
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print(' set ylo [expr $ybase + $y * $stepsizey]', file=ofile)
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print(' set xhi [expr $xlo + $stepsizex]', file=ofile)
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print(' set yhi [expr $ylo + $stepsizey]', file=ofile)
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print(' box values $xlo $ylo $xhi $yhi', file=ofile)
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# Flatten this area
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print(' flatten -dobbox -nolabels tile', file=ofile)
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print(' load tile', file=ofile)
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print(' select top cell', file=ofile)
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# Run density check for each layer
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print(' puts stdout "Density results for tile x=$x y=$y"', file=ofile)
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print(' set fdens [cif list cover fom_all]', file=ofile)
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print(' set pdens [cif list cover poly_all]', file=ofile)
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print(' set ldens [cif list cover li_all]', file=ofile)
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print(' set m1dens [cif list cover m1_all]', file=ofile)
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print(' set m2dens [cif list cover m2_all]', file=ofile)
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print(' set m3dens [cif list cover m3_all]', file=ofile)
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print(' set m4dens [cif list cover m4_all]', file=ofile)
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print(' set m5dens [cif list cover m5_all]', file=ofile)
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print(' puts stdout "FOM: $fdens"', file=ofile)
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print(' puts stdout "POLY: $pdens"', file=ofile)
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print(' puts stdout "LI1: $ldens"', file=ofile)
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print(' puts stdout "MET1: $m1dens"', file=ofile)
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print(' puts stdout "MET2: $m2dens"', file=ofile)
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print(' puts stdout "MET3: $m3dens"', file=ofile)
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print(' puts stdout "MET4: $m4dens"', file=ofile)
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print(' puts stdout "MET5: $m5dens"', file=ofile)
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print(' flush stdout', file=ofile)
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print(' update idletasks', file=ofile)
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print(' load ' + project_with_id, file=ofile)
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print(' cellname delete tile', file=ofile)
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print(' }', file=ofile)
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print('}', file=ofile)
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print('set endtime [orig_clock format [orig_clock seconds] -format "%D %T"]', file=ofile)
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print('puts stdout "Ended: $endtime"', file=ofile)
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print('', file=ofile)
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myenv = os.environ.copy()
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# Real views are necessary for the DRC checks
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myenv['MAGTYPE'] = 'mag'
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print('Running density checks on file ' + project_with_id + '.gds', flush=True)
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mproc = subprocess.Popen(['magic', '-dnull', '-noconsole',
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'-rcfile', rcfile, magpath + '/check_density.tcl'],
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stdin = subprocess.DEVNULL,
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stdout = subprocess.PIPE,
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stderr = subprocess.PIPE,
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cwd = magpath,
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env = myenv,
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universal_newlines = True)
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# Use signal to poll the process and generate any output as it arrives
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dlines = []
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while mproc:
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status = mproc.poll()
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if status != None:
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try:
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output = mproc.communicate(timeout=1)
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except ValueError:
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print('Magic forced stop, status ' + str(status))
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sys.exit(1)
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else:
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outlines = output[0]
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errlines = output[1]
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for line in outlines.splitlines():
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dlines.append(line)
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print(line)
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for line in errlines.splitlines():
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print(line)
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print('Magic exited with status ' + str(status))
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if int(status) != 0:
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sys.exit(int(status))
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else:
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break
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else:
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n = 0
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while True:
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n += 1
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if n > 100:
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n = 0
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status = mproc.poll()
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if status != None:
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break
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sresult = select.select([mproc.stdout, mproc.stderr], [], [], 0.5)[0]
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if mproc.stdout in sresult:
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outstring = mproc.stdout.readline().strip()
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dlines.append(outstring)
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print(outstring)
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elif mproc.stderr in sresult:
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outstring = mproc.stderr.readline().strip()
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print(outstring)
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else:
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break
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fomfill = []
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polyfill = []
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lifill = []
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met1fill = []
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met2fill = []
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met3fill = []
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met4fill = []
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met5fill = []
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xtiles = 0
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ytiles = 0
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xfrac = 0.0
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yfrac = 0.0
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for line in dlines:
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dpair = line.split(':')
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if len(dpair) == 2:
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layer = dpair[0]
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try:
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density = float(dpair[1].strip())
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except:
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continue
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if layer == 'FOM':
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fomfill.append(density)
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elif layer == 'POLY':
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polyfill.append(density)
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elif layer == 'LI1':
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lifill.append(density)
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elif layer == 'MET1':
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met1fill.append(density)
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elif layer == 'MET2':
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met2fill.append(density)
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elif layer == 'MET3':
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met3fill.append(density)
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elif layer == 'MET4':
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met4fill.append(density)
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elif layer == 'MET5':
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met5fill.append(density)
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elif layer == 'XTILES':
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xtiles = int(dpair[1].strip())
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elif layer == 'YTILES':
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ytiles = int(dpair[1].strip())
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elif layer == 'XFRAC':
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xfrac = float(dpair[1].strip())
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elif layer == 'YFRAC':
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yfrac = float(dpair[1].strip())
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if ytiles == 0 or xtiles == 0:
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print('Failed to read XTILES or YTILES from output.')
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sys.exit(1)
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total_tiles = (ytiles - 9) * (xtiles - 9)
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print('')
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print('Density results (total tiles = ' + str(total_tiles) + '):')
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# For FOM, step at 70um intervals (same as 70um check area)
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fomstep = 1
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# For poly, step only at 700um intervals (10 * 70um check area)
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polystep = 10
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# For all metals, step only at 350um intervals (5 * 70um check area)
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metalstep = 5
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# Full areas are 10 x 10 tiles = 100. But the right and top sides are
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# not full tiles, so the full area must be prorated.
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sideadjust = 90.0 + (10.0 * xfrac)
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topadjust = 90.0 + (10.0 * yfrac)
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corneradjust = 81.0 + (9.0 * xfrac) + (9.0 * yfrac) + (xfrac * yfrac)
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print('')
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print('FOM Density:')
|
||
|
|
for y in range(0, ytiles - 9, fomstep):
|
||
|
|
if y == ytiles - 10:
|
||
|
|
atotal = topadjust
|
||
|
|
else:
|
||
|
|
atotal = 100.0
|
||
|
|
for x in range(0, xtiles - 9, fomstep):
|
||
|
|
if x == xtiles - 10:
|
||
|
|
if y == ytiles - 10:
|
||
|
|
atotal = corneradjust
|
||
|
|
else:
|
||
|
|
atotal = sideadjust
|
||
|
|
fomaccum = 0
|
||
|
|
for w in range(y, y + 10):
|
||
|
|
base = xtiles * w + x
|
||
|
|
fomaccum += sum(fomfill[base : base + 10])
|
||
|
|
|
||
|
|
fomaccum /= atotal
|
||
|
|
print('Tile (' + str(x) + ', ' + str(y) + '): ' + str(fomaccum))
|
||
|
|
if fomaccum < 0.33:
|
||
|
|
print('***Error: FOM Density < 33%')
|
||
|
|
elif fomaccum > 0.57:
|
||
|
|
print('***Error: FOM Density > 57%')
|
||
|
|
|
||
|
|
print('')
|
||
|
|
print('POLY Density:')
|
||
|
|
for y in range(0, ytiles - 9, polystep):
|
||
|
|
if y == ytiles - 10:
|
||
|
|
atotal = topadjust
|
||
|
|
else:
|
||
|
|
atotal = 100.0
|
||
|
|
for x in range(0, xtiles - 9, polystep):
|
||
|
|
if x == xtiles - 10:
|
||
|
|
if y == ytiles - 10:
|
||
|
|
atotal = corneradjust
|
||
|
|
else:
|
||
|
|
atotal = sideadjust
|
||
|
|
polyaccum = 0
|
||
|
|
for w in range(y, y + 10):
|
||
|
|
base = xtiles * w + x
|
||
|
|
polyaccum += sum(polyfill[base : base + 10])
|
||
|
|
|
||
|
|
polyaccum /= atotal
|
||
|
|
print('Tile (' + str(x) + ', ' + str(y) + '): ' + str(polyaccum))
|
||
|
|
|
||
|
|
print('')
|
||
|
|
print('LI Density:')
|
||
|
|
for y in range(0, ytiles - 9, metalstep):
|
||
|
|
if y == ytiles - 10:
|
||
|
|
atotal = topadjust
|
||
|
|
else:
|
||
|
|
atotal = 100.0
|
||
|
|
for x in range(0, xtiles - 9, metalstep):
|
||
|
|
if x == xtiles - 10:
|
||
|
|
if y == ytiles - 10:
|
||
|
|
atotal = corneradjust
|
||
|
|
else:
|
||
|
|
atotal = sideadjust
|
||
|
|
liaccum = 0
|
||
|
|
for w in range(y, y + 10):
|
||
|
|
base = xtiles * w + x
|
||
|
|
liaccum += sum(lifill[base : base + 10])
|
||
|
|
|
||
|
|
liaccum /= atotal
|
||
|
|
print('Tile (' + str(x) + ', ' + str(y) + '): ' + str(liaccum))
|
||
|
|
if liaccum < 0.35:
|
||
|
|
print('***Error: LI Density < 35%')
|
||
|
|
elif liaccum > 0.60:
|
||
|
|
print('***Error: LI Density > 60%')
|
||
|
|
|
||
|
|
print('')
|
||
|
|
print('MET1 Density:')
|
||
|
|
for y in range(0, ytiles - 9, metalstep):
|
||
|
|
if y == ytiles - 10:
|
||
|
|
atotal = topadjust
|
||
|
|
else:
|
||
|
|
atotal = 100.0
|
||
|
|
for x in range(0, xtiles - 9, metalstep):
|
||
|
|
if x == xtiles - 10:
|
||
|
|
if y == ytiles - 10:
|
||
|
|
atotal = corneradjust
|
||
|
|
else:
|
||
|
|
atotal = sideadjust
|
||
|
|
met1accum = 0
|
||
|
|
for w in range(y, y + 10):
|
||
|
|
base = xtiles * w + x
|
||
|
|
met1accum += sum(met1fill[base : base + 10])
|
||
|
|
|
||
|
|
met1accum /= atotal
|
||
|
|
print('Tile (' + str(x) + ', ' + str(y) + '): ' + str(met1accum))
|
||
|
|
if met1accum < 0.35:
|
||
|
|
print('***Error: MET1 Density < 35%')
|
||
|
|
elif met1accum > 0.60:
|
||
|
|
print('***Error: MET1 Density > 60%')
|
||
|
|
|
||
|
|
print('')
|
||
|
|
print('MET2 Density:')
|
||
|
|
for y in range(0, ytiles - 9, metalstep):
|
||
|
|
if y == ytiles - 10:
|
||
|
|
atotal = topadjust
|
||
|
|
else:
|
||
|
|
atotal = 100.0
|
||
|
|
for x in range(0, xtiles - 9, metalstep):
|
||
|
|
if x == xtiles - 10:
|
||
|
|
if y == ytiles - 10:
|
||
|
|
atotal = corneradjust
|
||
|
|
else:
|
||
|
|
atotal = sideadjust
|
||
|
|
met2accum = 0
|
||
|
|
for w in range(y, y + 10):
|
||
|
|
base = xtiles * w + x
|
||
|
|
met2accum += sum(met2fill[base : base + 10])
|
||
|
|
|
||
|
|
met2accum /= atotal
|
||
|
|
print('Tile (' + str(x) + ', ' + str(y) + '): ' + str(met2accum))
|
||
|
|
if met2accum < 0.35:
|
||
|
|
print('***Error: MET2 Density < 35%')
|
||
|
|
elif met2accum > 0.60:
|
||
|
|
print('***Error: MET2 Density > 60%')
|
||
|
|
|
||
|
|
print('')
|
||
|
|
print('MET3 Density:')
|
||
|
|
for y in range(0, ytiles - 9, metalstep):
|
||
|
|
if y == ytiles - 10:
|
||
|
|
atotal = topadjust
|
||
|
|
else:
|
||
|
|
atotal = 100.0
|
||
|
|
for x in range(0, xtiles - 9, metalstep):
|
||
|
|
if x == xtiles - 10:
|
||
|
|
if y == ytiles - 10:
|
||
|
|
atotal = corneradjust
|
||
|
|
else:
|
||
|
|
atotal = sideadjust
|
||
|
|
met3accum = 0
|
||
|
|
for w in range(y, y + 10):
|
||
|
|
base = xtiles * w + x
|
||
|
|
met3accum += sum(met3fill[base : base + 10])
|
||
|
|
|
||
|
|
met3accum /= atotal
|
||
|
|
print('Tile (' + str(x) + ', ' + str(y) + '): ' + str(met3accum))
|
||
|
|
if met3accum < 0.35:
|
||
|
|
print('***Error: MET3 Density < 35%')
|
||
|
|
elif met3accum > 0.60:
|
||
|
|
print('***Error: MET3 Density > 60%')
|
||
|
|
|
||
|
|
print('')
|
||
|
|
print('MET4 Density:')
|
||
|
|
for y in range(0, ytiles - 9, metalstep):
|
||
|
|
if y == ytiles - 10:
|
||
|
|
atotal = topadjust
|
||
|
|
else:
|
||
|
|
atotal = 100.0
|
||
|
|
for x in range(0, xtiles - 9, metalstep):
|
||
|
|
if x == xtiles - 10:
|
||
|
|
if y == ytiles - 10:
|
||
|
|
atotal = corneradjust
|
||
|
|
else:
|
||
|
|
atotal = sideadjust
|
||
|
|
met4accum = 0
|
||
|
|
for w in range(y, y + 10):
|
||
|
|
base = xtiles * w + x
|
||
|
|
met4accum += sum(met4fill[base : base + 10])
|
||
|
|
|
||
|
|
met4accum /= atotal
|
||
|
|
print('Tile (' + str(x) + ', ' + str(y) + '): ' + str(met4accum))
|
||
|
|
if met4accum < 0.35:
|
||
|
|
print('***Error: MET4 Density < 35%')
|
||
|
|
elif met4accum > 0.60:
|
||
|
|
print('***Error: MET4 Density > 60%')
|
||
|
|
|
||
|
|
print('')
|
||
|
|
print('MET5 Density:')
|
||
|
|
for y in range(0, ytiles - 9, metalstep):
|
||
|
|
if y == ytiles - 10:
|
||
|
|
atotal = topadjust
|
||
|
|
else:
|
||
|
|
atotal = 100.0
|
||
|
|
for x in range(0, xtiles - 9, metalstep):
|
||
|
|
if x == xtiles - 10:
|
||
|
|
if y == ytiles - 10:
|
||
|
|
atotal = corneradjust
|
||
|
|
else:
|
||
|
|
atotal = sideadjust
|
||
|
|
met5accum = 0
|
||
|
|
for w in range(y, y + 10):
|
||
|
|
base = xtiles * w + x
|
||
|
|
met5accum += sum(met5fill[base : base + 10])
|
||
|
|
|
||
|
|
met5accum /= atotal
|
||
|
|
print('Tile (' + str(x) + ', ' + str(y) + '): ' + str(met5accum))
|
||
|
|
if met5accum < 0.45:
|
||
|
|
print('***Error: MET5 Density < 45%')
|
||
|
|
elif met5accum > 0.76:
|
||
|
|
print('***Error: MET5 Density > 76%')
|
||
|
|
|
||
|
|
print('')
|
||
|
|
print('Whole-chip density results:')
|
||
|
|
|
||
|
|
atotal = ((xtiles - 1.0) * (ytiles - 1.0)) + ((ytiles - 1.0) * xfrac) + ((xtiles - 1.0) * yfrac) + (xfrac * yfrac)
|
||
|
|
|
||
|
|
fomaccum = sum(fomfill) / atotal
|
||
|
|
print('')
|
||
|
|
print('FOM Density: ' + str(fomaccum))
|
||
|
|
if fomaccum < 0.33:
|
||
|
|
print('***Error: FOM Density < 33%')
|
||
|
|
elif fomaccum > 0.57:
|
||
|
|
print('***Error: FOM Density > 57%')
|
||
|
|
|
||
|
|
polyaccum = sum(polyfill) / atotal
|
||
|
|
print('')
|
||
|
|
print('POLY Density: ' + str(polyaccum))
|
||
|
|
|
||
|
|
liaccum = sum(lifill) / atotal
|
||
|
|
print('')
|
||
|
|
print('LI Density: ' + str(liaccum))
|
||
|
|
if liaccum < 0.35:
|
||
|
|
print('***Error: LI Density < 35%')
|
||
|
|
elif liaccum > 0.60:
|
||
|
|
print('***Error: LI Density > 60%')
|
||
|
|
|
||
|
|
met1accum = sum(met1fill) / atotal
|
||
|
|
print('')
|
||
|
|
print('MET1 Density: ' + str(met1accum))
|
||
|
|
if met1accum < 0.35:
|
||
|
|
print('***Error: MET1 Density < 35%')
|
||
|
|
elif met1accum > 0.60:
|
||
|
|
print('***Error: MET1 Density > 60%')
|
||
|
|
|
||
|
|
met2accum = sum(met2fill) / atotal
|
||
|
|
print('')
|
||
|
|
print('MET2 Density: ' + str(met2accum))
|
||
|
|
if met2accum < 0.35:
|
||
|
|
print('***Error: MET2 Density < 35%')
|
||
|
|
elif met2accum > 0.60:
|
||
|
|
print('***Error: MET2 Density > 60%')
|
||
|
|
|
||
|
|
met3accum = sum(met3fill) / atotal
|
||
|
|
print('')
|
||
|
|
print('MET3 Density: ' + str(met3accum))
|
||
|
|
if met3accum < 0.35:
|
||
|
|
print('***Error: MET3 Density < 35%')
|
||
|
|
elif met3accum > 0.60:
|
||
|
|
print('***Error: MET3 Density > 60%')
|
||
|
|
|
||
|
|
met4accum = sum(met4fill) / atotal
|
||
|
|
print('')
|
||
|
|
print('MET4 Density: ' + str(met4accum))
|
||
|
|
if met4accum < 0.35:
|
||
|
|
print('***Error: MET4 Density < 35%')
|
||
|
|
elif met4accum > 0.60:
|
||
|
|
print('***Error: MET4 Density > 60%')
|
||
|
|
|
||
|
|
met5accum = sum(met5fill) / atotal
|
||
|
|
print('')
|
||
|
|
print('MET5 Density: ' + str(met5accum))
|
||
|
|
if met5accum < 0.45:
|
||
|
|
print('***Error: MET5 Density < 45%')
|
||
|
|
elif met5accum > 0.76:
|
||
|
|
print('***Error: MET5 Density > 76%')
|
||
|
|
|
||
|
|
if not keepmode:
|
||
|
|
if os.path.isfile(magpath + '/check_density.tcl'):
|
||
|
|
os.remove(magpath + '/check_density.tcl')
|
||
|
|
|
||
|
|
print('')
|
||
|
|
print('Done!')
|
||
|
|
sys.exit(0)
|