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replace route_supply with route supplies from control_logic.py

This commit is contained in:
samuelkcrow 2022-07-18 10:43:54 -07:00
parent 9182ad7c61
commit 2611468dd7
1 changed files with 57 additions and 11 deletions
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68
compiler/modules/control_logic_delay.py
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@ -373,7 +373,7 @@ class control_logic_delay(design.design):
self.route_clk_buf() self.route_clk_buf()
self.route_gated_clk_bar() self.route_gated_clk_bar()
self.route_gated_clk_buf() self.route_gated_clk_buf()
self.route_supply() self.route_supplies()
def create_delay(self): def create_delay(self):
""" Create the delay chain """ """ Create the delay chain """
@ -752,28 +752,74 @@ class control_logic_delay(design.design):
start=out_pos, start=out_pos,
end=right_pos) end=right_pos)
def route_supply(self): def route_supplies(self):
""" Add vdd and gnd to the instance cells """ """ Add vdd and gnd to the instance cells """
supply_layer = self.dff.get_pin("vdd").layer pin_layer = self.dff.get_pin("vdd").layer
supply_layer = self.supply_stack[2]
# FIXME: We should be able to replace this with route_vertical_pins instead
# but we may have to make the logic gates a separate module so that they
# have row pins of the same width
max_row_x_loc = max([inst.rx() for inst in self.row_end_inst]) max_row_x_loc = max([inst.rx() for inst in self.row_end_inst])
min_row_x_loc = self.control_x_offset
vdd_pin_locs = []
gnd_pin_locs = []
last_via = None
for inst in self.row_end_inst: for inst in self.row_end_inst:
pins = inst.get_pins("vdd") pins = inst.get_pins("vdd")
for pin in pins: for pin in pins:
if pin.layer == supply_layer: if pin.layer == pin_layer:
row_loc = pin.rc() row_loc = pin.rc()
pin_loc = vector(max_row_x_loc, pin.rc().y) pin_loc = vector(max_row_x_loc, pin.rc().y)
self.add_power_pin("vdd", pin_loc, start_layer=pin.layer) vdd_pin_locs.append(pin_loc)
self.add_path(supply_layer, [row_loc, pin_loc]) last_via = self.add_via_stack_center(from_layer=pin_layer,
to_layer=supply_layer,
offset=pin_loc,
min_area=True)
self.add_path(pin_layer, [row_loc, pin_loc])
pins = inst.get_pins("gnd") pins = inst.get_pins("gnd")
for pin in pins: for pin in pins:
if pin.layer == supply_layer: if pin.layer == pin_layer:
row_loc = pin.rc() row_loc = pin.rc()
pin_loc = vector(max_row_x_loc, pin.rc().y) pin_loc = vector(min_row_x_loc, pin.rc().y)
self.add_power_pin("gnd", pin_loc, start_layer=pin.layer) gnd_pin_locs.append(pin_loc)
self.add_path(supply_layer, [row_loc, pin_loc]) last_via = self.add_via_stack_center(from_layer=pin_layer,
to_layer=supply_layer,
offset=pin_loc,
min_area=True)
self.add_path(pin_layer, [row_loc, pin_loc])
if last_via:
via_height=last_via.mod.second_layer_height
via_width=last_via.mod.second_layer_width
else:
via_height=None
via_width=0
min_y = min([x.y for x in vdd_pin_locs])
max_y = max([x.y for x in vdd_pin_locs])
bot_pos = vector(max_row_x_loc, min_y - 0.5 * via_height)
top_pos = vector(max_row_x_loc, max_y + 0.5 * via_height)
self.add_layout_pin_segment_center(text="vdd",
layer=supply_layer,
start=bot_pos,
end=top_pos,
width=via_width)
min_y = min([x.y for x in gnd_pin_locs])
max_y = max([x.y for x in gnd_pin_locs])
bot_pos = vector(min_row_x_loc, min_y - 0.5 * via_height)
top_pos = vector(min_row_x_loc, max_y + 0.5 * via_height)
self.add_layout_pin_segment_center(text="gnd",
layer=supply_layer,
start=bot_pos,
end=top_pos,
width=via_width)
self.copy_layout_pin(self.delay_inst, "gnd") self.copy_layout_pin(self.delay_inst, "gnd")
self.copy_layout_pin(self.delay_inst, "vdd") self.copy_layout_pin(self.delay_inst, "vdd")
@ -827,7 +873,7 @@ class control_logic_delay(design.design):
# Connect this at the bottom of the buffer # Connect this at the bottom of the buffer
out_pin = inst.get_pin("Z") out_pin = inst.get_pin("Z")
out_pos = out_pin.center() out_pos = out_pin.center()
mid1 = vector(out_pos.x, out_pos.y - 0.4 * inst.mod.height) mid1 = vector(out_pos.x, out_pos.y - 0.3 * inst.mod.height)
mid2 = vector(self.input_bus[name].cx(), mid1.y) mid2 = vector(self.input_bus[name].cx(), mid1.y)
bus_pos = self.input_bus[name].center() bus_pos = self.input_bus[name].center()
self.add_wire(self.m2_stack[::-1], [out_pos, mid1, mid2, bus_pos]) self.add_wire(self.m2_stack[::-1], [out_pos, mid1, mid2, bus_pos])