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154 | ###############################################################################
# Copyright (c) 2015-2024 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.
# =============================================================================
# @script
# Input Pin Connectivity
#
# Algorithm
# 1. Identify all input ports in the design.
# 2. Check all input ports that are connected to MOS gates.
# 3. Check that input ports are only connected to diodes or
# diode-connected MOS devices.
# 4. Add the extra devices connected to the input port to the
# result list.
#
# Example
# demo/api/esd/testcase04.sp
###############################################################################
# -----------------------------------------------------------------------------
# check04Port - Check port.
# -----------------------------------------------------------------------------
#
proc ESD:check04Port {db port resultListVar} {
upvar 1 $resultListVar resultList
##
# get connected net
#
set net [ESD:connectedNet $db $port]
if {$net == {}} {
return
}
##
# loop over all connected pins
#
set okList {}
set otherList {}
$db flat foreach pin -addHier $net pin {
##
# Ignore start port
#
if {[$db oid isequal $pin $port]} {
continue
}
##
# Ignore hierPins/ports
#
if {[$db oid type $pin] == "port"} {
lappend okList $pin
continue
}
if {[$db isModule $pin]} {
lappend okList $pin
continue
}
##
# Get primitive and pin function
#
set primFunc [$db primFuncOf $pin]
set pinFunc [ESD:funcName $db $pin]
##
# check connected pin
#
if {[ESD:diode $db $pin okList]} {
lappend okList $pin ;# gate ok
} elseif {$pinFunc eq "gate"} {
lappend okList $pin ;# gate ok
} elseif {[ESD:mosDiode $db $pin okList]} {
lappend okList $pin ;# mos diode ok
} else {
lappend otherList $pin
}
}
##
# Check for others
#
if {[llength $otherList] > 0} {
foreach other $otherList {
set msg "invalid '[$db oid print $other]' connected"
set oids [ESD:filterOids $db $other $port {}]
ESD:appendResult resultList $port $oids $msg
}
} else {
ESD:appendResult resultList $port $okList ""
}
}
# =============================================================================
# Check04 - Input Pin Connectivity
# =============================================================================
#
proc ESD:Check04 {db} {
##
# Initialize the result list.
#
set resultList {}
##
# Get top module.
#
set top [$db get_top_design]
##
# Count top input level ports
#
set count 0
$db foreach port $top port {
incr count
}
##
# Loop over all top input level ports
#
set i 0
$db foreach port $top port {
zprogress push "" [expr {double([incr i]) / $count}]
##
# name is used to skip non inputs
#
set name [$db oid oname $port]
if {![string match "*IN*" $name]} {
continue
}
ESD:check04Port $db $port resultList
if {[zprogress pop]} {
break
}
}
##
# Return the calculated result.
#
return $resultList
}
|