mirror of https://github.com/VLSIDA/OpenRAM.git
solve overlap of wmask in channel router
This commit is contained in:
FriedrichWu
parent
48a7065b31
commit
a0ff83c00a
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@ -13,6 +13,7 @@ from openram.tech import drc
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from .vector import vector
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from .design import design
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from openram import OPTS
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import re
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class channel_net():
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def __init__(self, net_name, pins, vertical):
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@ -318,6 +319,17 @@ class channel_route(design):
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debug.error("Cannot find layer pitch.", -1)
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return (nonpref_pitch, pitch, pitch - space, space)
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def check_need_jog(self, pin_name):
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match = re.search(r'^din\d+_(\d+)$', pin_name)
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if match:
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number = int(match.group(1))
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if number % int(OPTS.write_size) == 0:
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return True
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else:
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return False
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else:
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return False
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def add_horizontal_trunk_with_jog(self,
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pins,
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trunk_offset,
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@ -364,13 +376,39 @@ class channel_route(design):
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to_layer=self.vertical_layer,
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offset=pin_pos)
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else:
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pin_pos = pin.bc()
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# No bend needed here
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mid = vector(pin_pos.x, trunk_offset.y)
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self.add_path(self.vertical_layer, [pin_pos, mid])
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self.add_via_stack_center(from_layer=pin.layer,
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to_layer=self.vertical_layer,
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offset=pin.bc())
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if self.check_need_jog(pin.name) and (OPTS.write_size != OPTS.word_size):# for port0, only pin above track needs to check
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# right first
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self.add_via_stack_center(from_layer=pin.layer,
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to_layer=self.vertical_layer,
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offset=pin.rc())
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point_1 = vector(pin.center().x + pitch, pin.center().y)
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self.add_path(self.vertical_layer, [pin.rc(), point_1])
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# straight out of bank area
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self.add_via_stack_center(from_layer=self.vertical_layer,
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to_layer=self.vertical_layer,
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offset=point_1)
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point_2 = vector(point_1.x, point_1.y - 5.6)
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self.add_path(self.vertical_layer, [point_1, point_2])
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# then left
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self.add_via_stack_center(from_layer=self.vertical_layer,
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to_layer=self.vertical_layer,
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offset=point_2)
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point_3 = vector(pin.center().x, pin.center().y - 5.6)
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self.add_path(self.vertical_layer, [point_2, point_3])
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# back to normal
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self.add_via_stack_center(from_layer=self.vertical_layer,
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to_layer=self.vertical_layer,
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offset=point_3)
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mid = vector(point_3.x, trunk_offset.y)
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self.add_path(self.vertical_layer, [point_3, mid])
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else: # do not need to care of wmask
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pin_pos = pin.bc()
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# No bend needed here
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mid = vector(pin_pos.x, trunk_offset.y)
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self.add_path(self.vertical_layer, [pin_pos, mid])
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self.add_via_stack_center(from_layer=pin.layer,
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to_layer=self.vertical_layer,
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offset=pin.bc())
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else:
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# Add the horizontal trunk
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self.add_path(self.horizontal_layer,
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@ -393,15 +431,44 @@ class channel_route(design):
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to_layer=self.vertical_layer,
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offset=pin_pos)
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else:
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pin_pos = pin.bc()
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mid = vector(pin_pos.x, trunk_offset.y)
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self.add_path(self.vertical_layer, [pin_pos, mid])
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self.add_via_center(layers=self.layer_stack,
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offset=mid,
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directions=self.directions)
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self.add_via_stack_center(from_layer=pin.layer,
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to_layer=self.vertical_layer,
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offset=pin.bc())
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if self.check_need_jog(pin.name) and (OPTS.write_size != OPTS.word_size):# for port0, only pin above track needs to check
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# right first
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self.add_via_stack_center(from_layer=pin.layer,
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to_layer=self.vertical_layer,
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offset=pin.rc())
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point_1 = vector(pin.center().x + pitch, pin.center().y)
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self.add_path(self.vertical_layer, [pin.rc(), point_1])
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# straight out of bank area
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self.add_via_stack_center(from_layer=self.vertical_layer,
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to_layer=self.vertical_layer,
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offset=point_1)
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point_2 = vector(point_1.x, point_1.y - 5.6)
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self.add_path(self.vertical_layer, [point_1, point_2])
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# then left
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self.add_via_stack_center(from_layer=self.vertical_layer,
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to_layer=self.vertical_layer,
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offset=point_2)
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point_3 = vector(pin.center().x, pin.center().y - 5.6)
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self.add_path(self.vertical_layer, [point_2, point_3])
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# back to normal
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self.add_via_stack_center(from_layer=self.vertical_layer,
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to_layer=self.vertical_layer,
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offset=point_3)
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mid = vector(point_3.x, trunk_offset.y)
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self.add_path(self.vertical_layer, [point_3, mid])
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self.add_via_center(layers=self.layer_stack,
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offset=mid,
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directions=self.directions)
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else: # do not need to care of wmask
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pin_pos = pin.bc()
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mid = vector(pin_pos.x, trunk_offset.y)
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self.add_path(self.vertical_layer, [pin_pos, mid])
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self.add_via_center(layers=self.layer_stack,
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offset=mid,
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directions=self.directions)
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self.add_via_stack_center(from_layer=pin.layer,
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to_layer=self.vertical_layer,
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offset=pin.bc())
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else: # port 1, situation different, top need shift
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if non_preferred_route:
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# Add the horizontal trunk on the vertical layer!
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@ -412,13 +479,39 @@ class channel_route(design):
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# Route each pin to the trunk
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for pin in pins:
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if pin.cy() < trunk_offset.y:
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pin_pos = pin.uc()
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# No bend needed here
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mid = vector(pin_pos.x, trunk_offset.y)
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self.add_path(self.vertical_layer, [pin_pos, mid])
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self.add_via_stack_center(from_layer=pin.layer,
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to_layer=self.vertical_layer,
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offset=pin.uc())
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if self.check_need_jog(pin.name) and (OPTS.write_size != OPTS.word_size):# for port0, only pin above track needs to check
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# right first
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self.add_via_stack_center(from_layer=pin.layer,
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to_layer=self.vertical_layer,
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offset=pin.rc())
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point_1 = vector(pin.center().x + pitch, pin.center().y)
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self.add_path(self.vertical_layer, [pin.rc(), point_1])
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# straight out of bank area
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self.add_via_stack_center(from_layer=self.vertical_layer,
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to_layer=self.vertical_layer,
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offset=point_1)
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point_2 = vector(point_1.x, point_1.y + 5.6)
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self.add_path(self.vertical_layer, [point_1, point_2])
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# then left
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self.add_via_stack_center(from_layer=self.vertical_layer,
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to_layer=self.vertical_layer,
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offset=point_2)
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point_3 = vector(pin.center().x, pin.center().y + 5.6)
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self.add_path(self.vertical_layer, [point_2, point_3])
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# back to normal
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self.add_via_stack_center(from_layer=self.vertical_layer,
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to_layer=self.vertical_layer,
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offset=point_3)
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mid = vector(point_3.x, trunk_offset.y)
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self.add_path(self.vertical_layer, [point_3, mid])
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else: # do not need to care of wmask
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pin_pos = pin.uc()
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# No bend needed here
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mid = vector(pin_pos.x, trunk_offset.y)
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self.add_path(self.vertical_layer, [pin_pos, mid])
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self.add_via_stack_center(from_layer=pin.layer,
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to_layer=self.vertical_layer,
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offset=pin.uc())
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else:
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pin_pos = pin.center()
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mid = vector(pin_pos.x - 0.1, trunk_offset.y)
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@ -436,15 +529,44 @@ class channel_route(design):
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for pin in pins:
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# Find the correct side of the pin
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if pin.cy() < trunk_offset.y:
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pin_pos = pin.uc()
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mid = vector(pin_pos.x, trunk_offset.y)
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self.add_path(self.vertical_layer, [pin_pos, mid])
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self.add_via_center(layers=self.layer_stack,
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offset=mid,
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directions=self.directions)
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self.add_via_stack_center(from_layer=pin.layer,
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to_layer=self.vertical_layer,
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offset=pin.uc())
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if self.check_need_jog(pin.name) and (OPTS.write_size != OPTS.word_size):# for port0, only pin above track needs to check
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# right first
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self.add_via_stack_center(from_layer=pin.layer,
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to_layer=self.vertical_layer,
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offset=pin.rc())
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point_1 = vector(pin.center().x + pitch, pin.center().y)
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self.add_path(self.vertical_layer, [pin.rc(), point_1])
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# straight out of bank area
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self.add_via_stack_center(from_layer=self.vertical_layer,
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to_layer=self.vertical_layer,
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offset=point_1)
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point_2 = vector(point_1.x, point_1.y + 5.6)
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self.add_path(self.vertical_layer, [point_1, point_2])
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# then left
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self.add_via_stack_center(from_layer=self.vertical_layer,
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to_layer=self.vertical_layer,
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offset=point_2)
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point_3 = vector(pin.center().x, pin.center().y + 5.6)
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self.add_path(self.vertical_layer, [point_2, point_3])
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# back to normal
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self.add_via_stack_center(from_layer=self.vertical_layer,
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to_layer=self.vertical_layer,
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offset=point_3)
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mid = vector(point_3.x, trunk_offset.y)
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self.add_path(self.vertical_layer, [point_3, mid])
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self.add_via_center(layers=self.layer_stack,
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offset=mid,
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directions=self.directions)
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else: # do not need to care of wmask
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pin_pos = pin.uc()
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mid = vector(pin_pos.x, trunk_offset.y)
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self.add_path(self.vertical_layer, [pin_pos, mid])
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self.add_via_center(layers=self.layer_stack,
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offset=mid,
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directions=self.directions)
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self.add_via_stack_center(from_layer=pin.layer,
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to_layer=self.vertical_layer,
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offset=pin.uc())
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else:
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pin_pos = pin.center()
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mid = vector(pin_pos.x - 0.1, trunk_offset.y)
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