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Change channel route api to use pin maps instead of an insteads for cases where there are multiple instances that have the pins (e.g. decoders)

This commit is contained in:
Matt Guthaus 2018-07-25 11:37:06 -07:00
parent f7a2766c29
commit 7c254d540d
2 changed files with 10 additions and 10 deletions
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16
compiler/base/hierarchy_layout.py
View File

@ -708,7 +708,7 @@ class layout(lef.lef):
self.add_wire(layer_stack, [pin.center(), mid, trunk_mid]) self.add_wire(layer_stack, [pin.center(), mid, trunk_mid])
def create_channel_route(self, route_map, bottom_inst, top_inst, offset, def create_channel_route(self, route_map, top_pins, bottom_pins, offset,
layer_stack=("metal1", "via1", "metal2"), pitch=None, layer_stack=("metal1", "via1", "metal2"), pitch=None,
vertical=False): vertical=False):
""" """
@ -722,20 +722,18 @@ class layout(lef.lef):
elif not pitch and not vertical: elif not pitch and not vertical:
pitch = self.m1_pitch pitch = self.m1_pitch
# merge the two dictionaries to easily access all pins
all_pins = {**top_pins, **bottom_pins}
# FIXME: Must extend this to a horizontal conflict graph too if we want to minimize the # FIXME: Must extend this to a horizontal conflict graph too if we want to minimize the
# number of tracks! # number of tracks!
#hcg = {}
# Initialize the vertical conflict graph (vcg) and make a list of all pins # Initialize the vertical conflict graph (vcg) and make a list of all pins
vcg = {} vcg = {}
all_pins = {}
for (top_name, bot_name) in route_map: for (top_name, bot_name) in route_map:
vcg[top_name] = [] vcg[top_name] = []
vcg[bot_name] = [] vcg[bot_name] = []
top_pin = top_inst.get_pin(top_name)
bot_pin = bottom_inst.get_pin(bot_name)
all_pins[top_name]=top_pin
all_pins[bot_name]=bot_pin
# Find the vertical pin conflicts # Find the vertical pin conflicts
for (top_name, bot_name) in route_map: for (top_name, bot_name) in route_map:
@ -802,13 +800,13 @@ class layout(lef.lef):
self.create_channel_route(route_map, left_inst, right_inst, offset, self.create_channel_route(route_map, left_inst, right_inst, offset,
layer_stack, pitch, vertical=True) layer_stack, pitch, vertical=True)
def create_horizontal_channel_route(self, route_map, top_inst, bottom_inst, offset, def create_horizontal_channel_route(self, route_map, top_pins, bottom_pins, offset,
layer_stack=("metal1", "via1", "metal2"), layer_stack=("metal1", "via1", "metal2"),
pitch=None): pitch=None):
""" """
Wrapper to create a horizontal channel route Wrapper to create a horizontal channel route
""" """
self.create_channel_route(route_map, top_inst, bottom_inst, offset, self.create_channel_route(route_map, top_pins, bottom_pins, offset,
layer_stack, pitch, vertical=False) layer_stack, pitch, vertical=False)
def add_enclosure(self, insts, layer="nwell"): def add_enclosure(self, insts, layer="nwell"):

4
compiler/sram_1bank.py
View File

@ -181,7 +181,9 @@ class sram_1bank(sram_base):
bank_names = ["bank_din[{}]".format(x) for x in range(self.word_size)] bank_names = ["bank_din[{}]".format(x) for x in range(self.word_size)]
route_map = list(zip(bank_names, dff_names)) route_map = list(zip(bank_names, dff_names))
self.create_horizontal_channel_route(route_map, self.data_dff_inst, self.bank_inst, offset) dff_pins = {key: self.data_dff_inst.get_pin(key) for key in dff_names }
bank_pins = {key: self.bank_inst.get_pin(key) for key in bank_names }
self.create_horizontal_channel_route(route_map, dff_pins, bank_pins, offset)