# Copyright 2022 GlobalFoundries PDK Authors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

#=============================================================================================================================================================
#------------------------------------------------------ GF 0.18um MCU DRC RULE DECK (N+ POLY RESISTOR) -------------------------------------------------------
#=============================================================================================================================================================

require 'time'
require "logger"

exec_start_time = Time.now

logger = Logger.new(STDOUT)

logger.formatter = proc do |severity, datetime, progname, msg|
  "#{datetime}: Memory Usage (" + `pmap #{Process.pid} | tail -1`[10,40].strip + ") : #{msg}
"
end

#================================================
#----------------- FILE SETUP -------------------
#================================================

# optional for a batch launch :   klayout -b -r gf180mcu.drc -rd input=design.gds -rd report=gf180mcu_main.lyrdb

logger.info("Starting running GF180MCU Klayout DRC runset on %s" % [$input])

if $input
    if $topcell
        source($input, $topcell)
    else
        source($input)
    end
end

logger.info("Loading database to memory is complete.")

if $report
    logger.info("GF180MCU Klayout DRC runset output at: %s" % [$report])
    report("DRC Run Report at", $report)
else
    logger.info("GF180MCU Klayout DRC runset output at default location." % [File.join(File.dirname(RBA::CellView::active.filename), "gf180_drc.lyrdb").path])
    report("DRC Run Report at", File.join(File.dirname(RBA::CellView::active.filename), "gf180_drc.lyrdb"))
end

if $thr
    logger.info("Number of threads to use %s" % [$thr])
    threads($thr)
else
    logger.info("Number of threads to use 16")
    threads(16)
end

# === TILING MODE ===
if $run_mode == "tiling"
  # use a tile size of 1mm - not used in deep mode-
  # tiles(500.um)
  # use a tile border of 10 micron:
  # tile_borders(10.um)
  tiles(1000)
  logger.info("Tiling  mode is enabled.")

elsif $run_mode == "deep"
  #=== HIER MODE ===
  deep
  logger.info("deep  mode is enabled.")

elsif $run_mode == "flat"
  #=== FLAT MODE ===
  flat
  logger.info("flat  mode is enabled.")

else
  #=== FLAT MODE ===
  flat
  logger.info("flat  mode is enabled.")

end # run_mode

#================================================
#------------- LAYERS DEFINITIONS ---------------
#================================================

v5_xtor        = polygons(112, 1 )
dualgate       = polygons(55 , 0 )
poly2          = polygons(30 , 0 )
nplus          = polygons(32 , 0 )
pplus          = polygons(31 , 0 )
comp           = polygons(22 , 0 )
sab            = polygons(49 , 0 )
contact        = polygons(33 , 0 )
resistor       = polygons(62 , 0 )
res_mk         = polygons(110, 5 )

logger.info("Starting deriving base layers.")
#================================================
#------------- LAYERS DERIVATIONS ---------------
#================================================

ncomp      =  comp      & nplus
pcomp      =  comp      & pplus
tgate      =  poly2     & comp
ngate      =  nplus     & tgate
pgate      =  pplus     & tgate

#================================================
#------------------ SWITCHES --------------------
#================================================
logger.info("Evaluate switches.")

# FEOL
if $feol == "false"
  FEOL = $feol
  logger.info("FEOL is disabled.")
else
  FEOL = "true"
  logger.info("FEOL is enabled.")
end # FEOL

# BEOL
if $beol == "false"
  BEOL = $beol
  logger.info("BEOL is disabled.")
else
  BEOL = "true"
  logger.info("BEOL is enabled.")
end # BEOL

# connectivity rules
if $conn_drc == "true"
  CONNECTIVITY_RULES = $conn_drc
  logger.info("connectivity rules are enabled.")
else
  CONNECTIVITY_RULES = false
  logger.info("connectivity rules are disabled.")
end # connectivity rules

# METAL_TOP
if $metal_top
  METAL_TOP = $metal_top
else
  METAL_TOP = "9K"
end # METAL_TOP

logger.info("METAL_TOP Selected is %s" % [METAL_TOP])

# METAL_LEVEL
if $metal_level
  METAL_LEVEL = $metal_level
else
  METAL_LEVEL = "6LM"
end # METAL_LEVEL

logger.info("METAL_STACK Selected is %s" % [METAL_LEVEL])

# WEDGE
if $wedge == "false"
  WEDGE = $wedge
else
  WEDGE = "true"
end # WEDGE

logger.info("Wedge enabled  %s" % [WEDGE])

# BALL
if $ball == "false"
  BALL = $ball
else
  BALL = "true"
end # BALL

logger.info("Ball enabled  %s" % [BALL])

# GOLD
if $gold == "false"
  GOLD = $gold
else
  GOLD = "true"
end # GOLD

logger.info("Gold enabled  %s" % [GOLD])

if $mim_option
  MIM_OPTION = $mim_option
else
  MIM_OPTION = "Nan"
end

logger.info("MIM Option selected %s" % [MIM_OPTION])

# OFFGRID
if $offgrid == "false"
  OFFGRID = false
else
  OFFGRID = true
end # OFFGRID

logger.info("Offgrid enabled  %s" % [OFFGRID])

#================================================
#----------------N+ POLY RESISTOR----------------
#================================================

lres_poly = poly2.and(nplus).interacting(sab).interacting(res_mk)
# Rule LRES.1: Minimum width of Poly2 resistor. is 0.8µm
logger.info("Executing rule LRES.1")
lres1_l1  = lres_poly.width(0.8.um, euclidian).polygons(0.001)
lres1_l1.output("LRES.1", "LRES.1 : Minimum width of Poly2 resistor. : 0.8µm")
lres1_l1.forget

# Rule LRES.2: Minimum space between Poly2 resistors. is 0.4µm
logger.info("Executing rule LRES.2")
lres2_l1  = lres_poly.isolated(0.4.um, euclidian).polygons(0.001)
lres2_l1.output("LRES.2", "LRES.2 : Minimum space between Poly2 resistors. : 0.4µm")
lres2_l1.forget

# Rule LRES.3: Minimum space from Poly2 resistor to COMP.
logger.info("Executing rule LRES.3")
lres3_l1 = lres_poly.separation(comp, 0.6.um, euclidian).polygons(0.001).or(comp.not_outside(lres_poly))
lres3_l1.output("LRES.3", "LRES.3 : Minimum space from Poly2 resistor to COMP.")
lres3_l1.forget

# Rule LRES.4: Minimum space from Poly2 resistor to unrelated Poly2. is 0.6µm
logger.info("Executing rule LRES.4")
lres4_l1  = lres_poly.separation(poly2.not_interacting(sab), 0.6.um, euclidian).polygons(0.001)
lres4_l1.output("LRES.4", "LRES.4 : Minimum space from Poly2 resistor to unrelated Poly2. : 0.6µm")
lres4_l1.forget

# Rule LRES.5: Minimum Nplus implant overlap of Poly2 resistor. is 0.3µm
logger.info("Executing rule LRES.5")
lres5_l1 = nplus.enclosing(poly2.and(nplus).interacting(sab).interacting(res_mk), 0.3.um, euclidian).polygons(0.001)
lres5_l2 = poly2.and(nplus).interacting(sab).interacting(res_mk).not_outside(nplus).not(nplus)
lres5_l  = lres5_l1.or(lres5_l2)
lres5_l.output("LRES.5", "LRES.5 : Minimum Nplus implant overlap of Poly2 resistor. : 0.3µm")
lres5_l1.forget
lres5_l2.forget
lres5_l.forget

# Rule LRES.6: Minimum salicide block overlap of Poly2 resistor in width direction. is 0.28µm
logger.info("Executing rule LRES.6")
lres6_l1 = sab.enclosing(lres_poly,0.28.um).polygons(0.001)
lres6_l1.output("LRES.6", "LRES.6 : Minimum salicide block overlap of Poly2 resistor in width direction. : 0.28µm")
lres6_l1.forget

cont_lres7 = contact.inside(poly2.and(nplus).interacting(sab).interacting(res_mk))
# Rule LRES.7: Space from salicide block to contact on Poly2 resistor.
logger.info("Executing rule LRES.7")
lres7_l1 = cont_lres7.separation(sab,0.22.um).polygons(0.001).or(cont_lres7.interacting(sab))
lres7_l1.output("LRES.7", "LRES.7 : Space from salicide block to contact on Poly2 resistor.")
lres7_l1.forget

cont_lres7.forget
# rule LRES.8 is not a DRC check

mk_lres9 = res_mk.edges.not(poly2.and(nplus).and(sab).edges).inside_part(poly2)
# Rule LRES.9a: Nplus Poly2 resistor shall be covered by RES_MK marking. RES_MK length shall be coincide with resistor length (Defined by SAB length) and width covering the width of Poly2.
logger.info("Executing rule LRES.9a")
lres9a_l1 = res_mk.interacting(lres_poly).interacting(mk_lres9)
lres9a_l1.output("LRES.9a", "LRES.9a : Nplus Poly2 resistor shall be covered by RES_MK marking. RES_MK length shall be coincide with resistor length (Defined by SAB length) and width covering the width of Poly2. ")
lres9a_l1.forget

mk_lres9.forget
lres9b = res_mk.with_area(15000.01.um,nil).in(res_mk.interacting(res_mk.edges.with_length(80.01.um,nil)))
# Rule LRES.9b: If the size of single RES_MK mark layer is greater than 15000um2 and both side (X and Y) are greater than 80um. then the minimum spacing to adjacent RES_MK layer. is 20µm
logger.info("Executing rule LRES.9b")
lres9b_l1 = res_mk.interacting(lres_poly).drc(separation(lres9b) < 20.um).polygons(0.001)
lres9b_l1.output("LRES.9b", "LRES.9b : If the size of single RES_MK mark layer is greater than 15000um2 and both side (X and Y) are greater than 80um. then the minimum spacing to adjacent RES_MK layer. : 20µm")
lres9b_l1.forget

lres9b.forget
lres_poly.forget

exec_end_time = Time.now
run_time = exec_end_time - exec_start_time
logger.info("DRC Run time %f seconds" % [run_time])