def add_aon_read_config_data(interconnect: Interconnect):
# we need to replace each read_config_data_or with more circuits
# it should be in the children
for (x, y) in interconnect.tile_circuits:
tile = interconnect.tile_circuits[(x, y)]
children = tile.children()
for child in children:
if isinstance(child, FromMagma) and \
child.underlying.name == "read_config_data_or":
pd_feature = None
# usually the tile features are the last one
for feature in reversed(tile.features()):
if isinstance(feature, PowerDomainConfigReg):
pd_feature = feature
break
assert pd_feature is not None
pd_or = PowerDomainOR(tile.config_data_width)
replace(tile, child, pd_or)
# add config input to the the module
pd_or.add_port("I_not", magma.In(magma.Bits[1]))
tile.wire(pd_or.ports.I_not, pd_feature.ports.ps_en_out)
pd_or.wire(pd_or.ports.I_not, pd_or.not_gate.ports.I)
break
def add_power_domain(interconnect: Interconnect):
# add features first
for (x, y) in interconnect.tile_circuits:
tile = interconnect.tile_circuits[(x, y)]
tile_core = tile.core
if isinstance(tile_core, IOCore) or tile_core is None:
continue
# Add PS config register
pd_feature = PowerDomainConfigReg(tile.config_addr_width,
tile.config_data_width)
tile.add_feature(pd_feature)
# replace all the interconnect mux with aoi mux. cb mux to aoi const
# mux
# note that because we have an index to all mux created, it is fairly
# straight-forward
for (x, y) in interconnect.tile_circuits:
tile = interconnect.tile_circuits[(x, y)]
for bit_width, sb in tile.sbs.items():
sb_muxs = sb.sb_muxs
for _, (node, old_mux) in sb_muxs.items():
assert node.width == bit_width
new_mux = AOIMuxWrapper(old_mux.height, bit_width,
AOIMuxType.Regular,
old_mux.instance_name)
# replace it!
replace(sb, old_mux, new_mux)
reg_mux = sb.reg_muxs
for _, (node, old_mux) in reg_mux.items():
assert node.width == bit_width
new_mux = AOIMuxWrapper(old_mux.height, bit_width,
AOIMuxType.Regular,
old_mux.instance_name)
# replace it!
replace(sb, old_mux, new_mux)
# cb is const aoi
for _, cb in tile.cbs.items():
old_mux = cb.mux
new_mux = AOIMuxWrapper(old_mux.height, cb.node.width,
AOIMuxType.Const, cb.instance_name)
# replace it!
replace(cb, old_mux, new_mux)
def add_power_domain(interconnect: Interconnect):
# add features first
for (x, y) in interconnect.tile_circuits:
tile = interconnect.tile_circuits[(x, y)]
tile_core = tile.core
if isinstance(tile_core, IOCore) or tile_core is None:
continue
# Add PS config register
pd_feature = PowerDomainConfigReg(tile.config_addr_width,
tile.config_data_width)
tile.add_feature(pd_feature)
# replace all the interconnect mux with aoi mux. cb mux to aoi const
# mux
# note that because we have an index to all mux created, it is fairly
# straight-forward
for (x, y) in interconnect.tile_circuits:
tile = interconnect.tile_circuits[(x, y)]
for bit_width, sb in tile.sbs.items():
# we need more efficient implementation for a simple replacement
# pass. in other words, instead of an O(n^2) implementation, we
# hand-crafted an O(n) with smaller constants
sb_muxs = sb.sb_muxs
mux_table = {}
for _, (node, old_mux) in sb_muxs.items():
assert node.width == bit_width
new_mux = AOIMuxWrapper(old_mux.height, bit_width,
AOIMuxType.Regular,
old_mux.instance_name)
mux_table[old_mux] = new_mux
reg_mux = sb.reg_muxs
for _, (node, old_mux) in reg_mux.items():
assert node.width == bit_width
new_mux = AOIMuxWrapper(old_mux.height, bit_width,
AOIMuxType.Regular,
old_mux.instance_name)
mux_table[old_mux] = new_mux
assert len(mux_table) == len(sb_muxs) + len(reg_mux)
wires = set()
for conn1, conn2 in sb.wires:
if conn1.owner() in mux_table or conn2.owner() in mux_table:
wires.add((conn1, conn2))
for conn1, conn2 in wires:
# avoid O(n) search to remove the wires. this is safe
# since we directly load these connection in sorted order
sb.wires.remove((conn1, conn2))
for conn1, conn2 in wires:
conn1_owner = conn1.owner()
conn2_owner = conn2.owner()
if conn1_owner in mux_table:
conn1 = conn1.get_port(mux_table[conn1_owner].ports)
if conn2_owner in mux_table:
conn2 = conn2.get_port(mux_table[conn2_owner].ports)
sb.wire(conn1, conn2)
# cb is const aoi
for _, cb in tile.cbs.items():
old_mux = cb.mux
new_mux = AOIMuxWrapper(old_mux.height, cb.node.width,
AOIMuxType.Const, cb.instance_name)
# replace it!
replace(cb, old_mux, new_mux)
