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OpenRAM
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speed up constructive approach in 1rw-only

This commit is contained in:
FriedrichWu 2024-12-23 17:19:19 +01:00
parent 70ed2a506e
commit 691f7a989e
1 changed files with 17 additions and 6 deletions
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23
compiler/router/supply_placer.py
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@ -266,7 +266,7 @@ class supply_placer(router):
source_center = moat_pin.center()
if edge == "bottom":
add_distance = self.via2_via3_pitch # if shift, need to fulfill via2-via3 spacing, top/bottom only
pin_too_close = any(abs(io_pin.center().x - source_center.x) < self.track_width for io_pin in self.io_pins_bottom)
pin_too_close = any(abs(io_pin.center().x - source_center.x) < (self.track_width + 0.1) for io_pin in self.io_pins_bottom)
tmp_center = vector(source_center.x, source_center.y)
while pin_too_close:
tmp_center = vector(source_center.x, source_center.y)
@ -275,7 +275,7 @@ class supply_placer(router):
tmp_center = vector((tmp_center.x + add_distance), tmp_center.y)
else: # left shift
tmp_center = vector((tmp_center.x - add_distance), tmp_center.y)
pin_too_close = any(abs(io_pin.center().x - tmp_center.x) < self.track_width for io_pin in self.io_pins_bottom)
pin_too_close = any(abs(io_pin.center().x - tmp_center.x) < (self.track_width + 0.1) for io_pin in self.io_pins_bottom)
direction = - direction
# the nearst vdd ring
vdd_ring = self.new_pins["vdd"][1] # order in list -> "top", "bottom", "right", "left"]
@ -353,7 +353,7 @@ class supply_placer(router):
moat_pin_route = graph_shape("vdd", rect, "m4")
self.moat_pins_top.append(moat_pin_route)
elif edge == "left":
pin_too_close = any(abs(io_pin.center().y - source_center.y) < self.track_width for io_pin in self.io_pins_left)
pin_too_close = any(abs(io_pin.center().y - source_center.y) < (self.track_width + 0.1) for io_pin in self.io_pins_left)
tmp_center = vector(source_center.x, source_center.y)
while pin_too_close:
tmp_center = vector(source_center.x, source_center.y)
@ -362,7 +362,7 @@ class supply_placer(router):
tmp_center = vector(tmp_center.x, (tmp_center.y + add_distance))
else: # down shift
tmp_center = vector(tmp_center.x, (tmp_center.y - add_distance))
pin_too_close = any(abs(io_pin.center().y - tmp_center.y) < self.track_width for io_pin in self.io_pins_left)
pin_too_close = any(abs(io_pin.center().y - tmp_center.y) < (self.track_width + 0.1) for io_pin in self.io_pins_left)
direction = - direction
# the nearst vdd ring
vdd_ring = self.new_pins["vdd"][3] # order in list -> "top", "bottom", "right", "left"]
@ -396,7 +396,7 @@ class supply_placer(router):
moat_pin_route = graph_shape("vdd", rect, "m3")
self.moat_pins_left.append(moat_pin_route)
else: #right
pin_too_close = any(abs(io_pin.center().y - source_center.y) < self.track_width for io_pin in self.io_pins_right)
pin_too_close = any(abs(io_pin.center().y - source_center.y) < (self.track_width + 0.1) for io_pin in self.io_pins_right)
tmp_center = vector(source_center.x, source_center.y)
while pin_too_close:
tmp_center = vector(source_center.x, source_center.y)
@ -405,7 +405,7 @@ class supply_placer(router):
tmp_center = vector(tmp_center.x, (tmp_center.y + add_distance))
else: # down shift
tmp_center = vector(tmp_center.x, (tmp_center.y - add_distance))
pin_too_close = any(abs(io_pin.center().y - tmp_center.y) < self.track_width for io_pin in self.io_pins_right)
pin_too_close = any(abs(io_pin.center().y - tmp_center.y) < (self.track_width + 0.1) for io_pin in self.io_pins_right)
direction = - direction
# the nearst vdd ring
vdd_ring = self.new_pins["vdd"][2] # order in list -> "top", "bottom", "right", "left"]
@ -750,6 +750,17 @@ class supply_placer(router):
ring_pins = []
ring_pins = self.new_pins[pin_name]
for pin in pins:
# Special handle vdd/gnd in 1port sram(1rw), only at bank top-right is allowed
if len(self.design.all_ports) == 1:
# check if pin is inside bank area
if (self.design.bank_inst.lx() < pin.center().x < self.design.bank_inst.rx()) and (self.design.bank_inst.by() < pin.center().y < self.design.bank_inst.uy()):
# add pin at top-right as candidate, not care the distance
if (pin.center().x > self.design.bank_inst.rx() - 14) and (pin.center().y > self.design.bank_inst.uy() - 14):
candidate_pins.append(pin)
continue
else:# pin in the other area of bank, do not care
continue
# 2 port situation, or the other pins outer bank in 1port situation
for ring_pin in ring_pins:
dist = pin.distance(ring_pin)
if max_distance is None or dist <= max_distance: