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make channel router better

This commit is contained in:
FriedrichWu 2024-12-23 19:38:42 +01:00
parent 691f7a989e
commit 48a7065b31
1 changed files with 20 additions and 7 deletions
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27
compiler/base/channel_route.py
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@ -12,7 +12,7 @@ from openram import debug
from openram.tech import drc
from .vector import vector
from .design import design
from openram import OPTS
class channel_net():
def __init__(self, net_name, pins, vertical):
@ -326,13 +326,24 @@ class channel_route(design):
max_x = max([pin.center().x for pin in pins])
min_x = min([pin.center().x for pin in pins])
min_y = min([pin.center().y for pin in pins])
max_y = max([pin.center().y for pin in pins])
# see the channel is at top or bottom
if min_y < 0: # port0, min_x need to change
min_x = min_x - 0.1 # in order to add jog at the dff pins, avoid overlap with vdd pins, left shift vertical line at dout pin
port = 0
else: # port1, max_x need to change
max_x = max_x - 0.1 # in order to add jog at the dff pins, avoid overlap with vdd pins, left shift vertical line at dout pin
port = 1
if min_y < 0: # port0
for pin in pins:
if pin.center().x == max_x:
if pin.center().y == max_y:
min_x = min_x - 0.1 # in order to add jog at the dff pins, avoid overlap with vdd pins, left shift vertical line at dout pin
else: # pin has max_x is under track
max_x = max_x - 0.1
port = 0
else: # port1
for pin in pins:
if pin.center().x == max_x:
if pin.center().y == max_y:
max_x = max_x - 0.1 # in order to add jog at the dff pins, avoid overlap with vdd pins, left shift vertical line at dout pin
else: # pin has max_x is under track
min_x = min_x - 0.1
port = 1
# if we are less than a pitch, just create a non-preferred layer jog
non_preferred_route = max_x - min_x <= pitch
half_layer_width = 0.5 * drc["minwidth_{0}".format(self.vertical_layer)]
@ -368,6 +379,8 @@ class channel_route(design):
# Route each pin to the trunk
for pin in pins:
debug.warning("pin name in net ----> {0}".format(pin.name))
debug.warning("wmask or not --> {0}".format(OPTS.write_size))
# Find the correct side of the pin
if pin.cy() < trunk_offset.y:
pin_pos = pin.center()