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write_driver/array: Remove hardcoded pin names 

all pin names should be wrapped into a function/property. This ensures
that there is exactly one place to change the name.

Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
This commit is contained in:
Bastian Koppelmann 2020-02-17 14:23:26 +01:00
parent 656fdd1008
commit c06cb2bfc2
2 changed files with 44 additions and 25 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
compiler/modules/write_driver.py
View File

@ -43,6 +43,14 @@ class write_driver(design.design):
def get_br_names(self): def get_br_names(self):
return "br" return "br"
@property
def din_name(self):
return "din"
@property
def en_name(self):
return "en"
def get_w_en_cin(self): def get_w_en_cin(self):
"""Get the relative capacitance of a single input""" """Get the relative capacitance of a single input"""
# This is approximated from SCMOS. It has roughly 5 3x transistor gates. # This is approximated from SCMOS. It has roughly 5 3x transistor gates.

61
compiler/modules/write_driver_array.py
View File

@ -45,6 +45,14 @@ class write_driver_array(design.design):
br_name = self.driver.get_br_names() br_name = self.driver.get_br_names()
return br_name return br_name
@property
def data_name(self):
return "data"
@property
def en_name(self):
return "en"
def create_netlist(self): def create_netlist(self):
self.add_modules() self.add_modules()
self.add_pins() self.add_pins()
@ -65,15 +73,15 @@ class write_driver_array(design.design):
def add_pins(self): def add_pins(self):
for i in range(self.word_size): for i in range(self.word_size):
self.add_pin("data_{0}".format(i), "INPUT") self.add_pin(self.data_name + "_{0}".format(i), "INPUT")
for i in range(self.word_size): for i in range(self.word_size):
self.add_pin("bl_{0}".format(i), "OUTPUT") self.add_pin(self.get_bl_name() + "_{0}".format(i), "OUTPUT")
self.add_pin("br_{0}".format(i), "OUTPUT") self.add_pin(self.get_br_name() + "_{0}".format(i), "OUTPUT")
if self.write_size: if self.write_size:
for i in range(self.num_wmasks): for i in range(self.num_wmasks):
self.add_pin("en_{0}".format(i), "INPUT") self.add_pin(self.en_name + "_{0}".format(i), "INPUT")
else: else:
self.add_pin("en", "INPUT") self.add_pin(self.en_name, "INPUT")
self.add_pin("vdd", "POWER") self.add_pin("vdd", "POWER")
self.add_pin("gnd", "GROUND") self.add_pin("gnd", "GROUND")
@ -96,20 +104,20 @@ class write_driver_array(design.design):
mod=self.driver) mod=self.driver)
if self.write_size: if self.write_size:
self.connect_inst(["data_{0}".format(index), self.connect_inst([self.data_name + "_{0}".format(index),
"bl_{0}".format(index), self.get_bl_name() + "_{0}".format(index),
"br_{0}".format(index), self.get_br_name() + "_{0}".format(index),
"en_{0}".format(windex), "vdd", "gnd"]) self.en_name + "_{0}".format(windex), "vdd", "gnd"])
w+=1 w+=1
# when w equals write size, the next en pin can be connected since we are now at the next wmask bit # when w equals write size, the next en pin can be connected since we are now at the next wmask bit
if w == self.write_size: if w == self.write_size:
w = 0 w = 0
windex+=1 windex+=1
else: else:
self.connect_inst(["data_{0}".format(index), self.connect_inst([self.data_name + "_{0}".format(index),
"bl_{0}".format(index), self.get_bl_name() + "_{0}".format(index),
"br_{0}".format(index), self.get_br_name() + "_{0}".format(index),
"en", "vdd", "gnd"]) self.en_name, "vdd", "gnd"])
def place_write_array(self): def place_write_array(self):
@ -134,21 +142,22 @@ class write_driver_array(design.design):
def add_layout_pins(self): def add_layout_pins(self):
for i in range(self.word_size): for i in range(self.word_size):
din_pin = self.driver_insts[i].get_pin("din") inst = self.driver_insts[i]
self.add_layout_pin(text="data_{0}".format(i), din_pin = inst.get_pin(inst.mod.din_name)
self.add_layout_pin(text=self.data_name + "_{0}".format(i),
layer="m2", layer="m2",
offset=din_pin.ll(), offset=din_pin.ll(),
width=din_pin.width(), width=din_pin.width(),
height=din_pin.height()) height=din_pin.height())
bl_pin = self.driver_insts[i].get_pin("bl") bl_pin = inst.get_pin(inst.mod.get_bl_names())
self.add_layout_pin(text="bl_{0}".format(i), self.add_layout_pin(text=self.get_bl_name() + "_{0}".format(i),
layer="m2", layer="m2",
offset=bl_pin.ll(), offset=bl_pin.ll(),
width=bl_pin.width(), width=bl_pin.width(),
height=bl_pin.height()) height=bl_pin.height())
br_pin = self.driver_insts[i].get_pin("br") br_pin = inst.get_pin(inst.mod.get_br_names())
self.add_layout_pin(text="br_{0}".format(i), self.add_layout_pin(text=self.get_br_name() + "_{0}".format(i),
layer="m2", layer="m2",
offset=br_pin.ll(), offset=br_pin.ll(),
width=br_pin.width(), width=br_pin.width(),
@ -163,7 +172,8 @@ class write_driver_array(design.design):
start_layer = "m2") start_layer = "m2")
if self.write_size: if self.write_size:
for bit in range(self.num_wmasks): for bit in range(self.num_wmasks):
en_pin = self.driver_insts[bit*self.write_size].get_pin("en") inst = self.driver_insts[bit*self.write_size]
en_pin = inst.get_pin(inst.mod.en_name)
# Determine width of wmask modified en_pin with/without col mux # Determine width of wmask modified en_pin with/without col mux
wmask_en_len = self.words_per_row*(self.write_size * self.driver_spacing) wmask_en_len = self.words_per_row*(self.write_size * self.driver_spacing)
if (self.words_per_row == 1): if (self.words_per_row == 1):
@ -171,15 +181,16 @@ class write_driver_array(design.design):
else: else:
en_gap = self.driver_spacing en_gap = self.driver_spacing
self.add_layout_pin(text="en_{0}".format(bit), self.add_layout_pin(text=self.en_name + "_{0}".format(bit),
layer=en_pin.layer, layer=en_pin.layer,
offset=en_pin.ll(), offset=en_pin.ll(),
width=wmask_en_len-en_gap, width=wmask_en_len-en_gap,
height=en_pin.height()) height=en_pin.height())
else: else:
self.add_layout_pin(text="en", inst = self.driver_insts[0]
self.add_layout_pin(text=self.en_name,
layer="m1", layer="m1",
offset=self.driver_insts[0].get_pin("en").ll().scale(0,1), offset=inst.get_pin(inst.mod.en_name).ll().scale(0,1),
width=self.width) width=self.width)