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197 | ###############################################################################
# Copyright (c) 2022-2024 by Altair Engineering, Inc.
# All rights reserved.
#
# Altair Engineering, Inc. makes this software available as part of the Vision
# tool platform. As long as you are a licensee of the Vision tool platform
# you may make copies of the software and modify it to be used within the
# Vision tool platform, but you must include all of this notice on any copy.
# Redistribution without written permission to any third party, with or
# without modification, is not permitted.
# Altair Engineering, Inc. does not warrant that this software is error free
# or fit for any purpose. Altair Engineering, Inc. disclaims any liability for
# all claims, expenses, losses, damages and costs any user may incur as a
# result of using, copying or modifying the software.
# =============================================================================
# @plugin
# Analyze Blackbox Connectivity
# @namespace
# AnalyzeBlackboxConnectivity
# @section
# Modify the Loaded Database
# @description
# Analyze the connectivity of a blackbox instance and try to arrange the
# pins on the left or right side depending on the connectivity.
# @files
# analyzeBlackboxConnectivity.tcl
# @tag
# gui
###############################################################################
# =============================================================================
# Init - Initialize the plugin.
# =============================================================================
#
proc AnalyzeBlackboxConnectivity:Init {} {
##
# Add a menu entry.
#
gui menu command {"Userware" "Analyze Blackbox Connectivity"} \
[list AnalyzeBlackboxConnectivity:Start]
##
# Register a new custom popup entry.
#
gui popup append "Analyze Blackbox Connectivity" \
[list AnalyzeBlackboxConnectivity:Selected]
}
# =============================================================================
# Finit - Finalize the plugin.
# =============================================================================
#
proc AnalyzeBlackboxConnectivity:Finit {} {
##
# Undo modifications of the GUI.
#
gui menu removeEntry {"Userware" "Analyze Blackbox Connectivity"}
gui popup remove "Analyze Blackbox Connectivity"
}
# =============================================================================
# Start - Start analyzing the design database to find all blackbox instances
# and call the actual analyze procedure for each blackbox.
# =============================================================================
#
proc AnalyzeBlackboxConnectivity:Start {} {
set db [gui database get]
if {$db eq ""} {
return
}
$db flat foreach instOfCell undefined [$db get_top_design] inst {
AnalyzeBlackboxConnectivity:_analyzeConnectivity $db $inst
}
gui database modified
}
# =============================================================================
# Selected - Start analyzing the selected blackbox instance.
# =============================================================================
#
proc AnalyzeBlackboxConnectivity:Selected {oidList} {
set db [gui database get]
if {$db eq ""} {
return
}
foreach oid $oidList {
if {[$db oid type $oid] ne "inst"} {
continue
}
if {[$db flag [$db down $oid] is undefined]} {
AnalyzeBlackboxConnectivity:_analyzeConnectivity $db $oid
}
}
gui database modified
}
# -----------------------------------------------------------------------------
# _analyzeConnectivity -
# -----------------------------------------------------------------------------
#
proc AnalyzeBlackboxConnectivity:_analyzeConnectivity {db inst} {
set cell [$db down $inst]
set clone [$db clone $cell]
$db foreach pin $inst pin {
if {[$db isBusMember $pin]} {
continue
}
if {![$db isConnected $pin ]} {
continue
}
set direction [AnalyzeBlackboxConnectivity:_guessPinDirection $db $pin]
set port [$db search port $clone [$db oid pname $pin]]
$db flag $port set $direction
}
$db foreach pinBus $inst pinBus {
array unset _busDirTable
array set _busDirTable {}
$db foreach pin $pinBus pin {
if {![$db isConnected $pin ]} {
continue
}
set dir [AnalyzeBlackboxConnectivity:_guessPinDirection $db $pin]
if {![info exists _busDirTable($dir)]} {
set _busDirTable($dir) 0
}
incr _busDirTable($dir)
}
if {[llength [array names _busDirTable]] == 1} {
set direction [lindex [array names _busDirTable] 0]
} else {
set d [lsort -integer -stride 2 -index 1 [array get _busDirTable]]
set direction [lindex $d end-1]
}
$db foreach pin $pinBus pin {
set port [$db search port $clone [$db oid pname $pin]]
$db flag $port set $direction
}
set portBus [$db search portBus $clone [$db oid pname $pinBus]]
$db flag $portBus set $direction
}
$db oper changecellref $inst [$db oid oname $clone]
}
# -----------------------------------------------------------------------------
# _guessPinDirection -
# -----------------------------------------------------------------------------
#
proc AnalyzeBlackboxConnectivity:_guessPinDirection {db pin} {
array unset _directionTable
array set _directionTable {}
set net [$db connectedNet $pin]
if {([$db value $net] ne "") || [$db isPgNet $net]} {
return "left"
}
$db foreach pin $net connectedPin {
if {[$db oid isequal $pin $connectedPin]} {
continue
}
set direction [$db directionOf $connectedPin]
if {[$db oid type $connectedPin] eq "pin"} {
if {$direction eq "input"} {
set direction "output"
}
if {$direction eq "output"} {
set direction "input"
}
}
set _directionTable($direction) 1
}
if {[llength [array names _directionTable]] == 1} {
if {[lindex [array names _directionTable] 0] eq "input"} {
return "left"
}
}
return "right"
}
# =============================================================================
# Call the initialization procedure.
# =============================================================================
#
AnalyzeBlackboxConnectivity:Init
|