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#!/usr/bin/env python3
import pytrellis
import database
location_types = dict()
type_at_location = dict()
tiletype_names = dict()
def is_global(loc):
return loc.x == -2 and loc.y == -2
# Get the index for a tiletype
def get_tiletype_index(name):
if name in tiletype_names:
return tiletype_names[name]
idx = len(tiletype_names)
tiletype_names[name] = idx
return idx
loc_wire_indices = dict()
loc_wires = dict()
loc_bels = dict()
wire_bel_pins_uphill = dict()
wire_bel_pins_downhill = dict()
# Import all wire names at all locations
def import_location_wires(rg, x, y):
loc_wire_indices[x, y] = dict()
loc_wires[x, y] = list()
wire_bel_pins_uphill[x, y] = list()
wire_bel_pins_downhill[x, y] = list()
rtile = rg.tiles[pytrellis.Location(x, y)]
for wire in rtile.wires:
name = rg.to_str(wire.key())
idx = len(loc_wires[x, y])
loc_wires[x, y].append(name)
loc_wire_indices[x, y][name] = idx
wire_bel_pins_uphill[x, y].append([])
wire_bel_pins_downhill[x, y].append([])
# Take a RoutingId from Trellis and make into a (relx, rely, name) tuple
def resolve_wirename(rg, rid, cur_x, cur_y):
if is_global(rid.loc):
return (cur_x, cur_y, rg.to_str(rid.id))
else:
x = rid.loc.x
y = rid.loc.y
widx = loc_wire_indices[x, y][rg.to_str(rid.id)]
return (x - cur_x, y - cur_y, widx)
loc_arc_indices = dict() # Map RoutingId index to nextpnr index
loc_arcs = dict()
# Import all arc indices at a location
def index_location_arcs(rg, x, y):
loc_arc_indices[x, y] = dict()
loc_arcs[x, y] = list()
rtile = rg.tiles[pytrellis.Location(x, y)]
for arc in rtile.arcs:
idx = len(loc_arcs)
trid = arc.key()
loc_arcs[x, y].append(trid)
loc_arc_indices[x, y][trid] = idx
def add_bel_input(bel_x, bel_y, bel_idx, bel_pin, wire_x, wire_y, wire_name):
loc_bels[bel_x, bel_y][bel_idx][2].append((bel_pin, (wire_x, wire_y, loc_wire_indices[wire_x, wire_y][wire_name])))
wire_bel_pins_downhill[wire_x, wire_y][loc_wire_indices[wire_x, wire_y][wire_name]].append((
(bel_x, bel_y, bel_idx), bel_pin))
def add_bel_output(bel_x, bel_y, bel_idx, bel_pin, wire_x, wire_y, wire_name):
loc_bels[bel_x, bel_y][bel_idx][2].append((bel_pin, (wire_x, wire_y, loc_wire_indices[wire_x, wire_y][wire_name])))
wire_bel_pins_uphill[wire_x, wire_y][loc_wire_indices[wire_x, wire_y][wire_name]].append((
(bel_x, bel_y, bel_idx), bel_pin))
def add_slice(x, y, z):
idx = len(loc_bels[x, y])
l = ("A", "B", "C", "D")[z]
name = "SLICE" + l
loc_bels[x, y].append((name, "SLICE", []))
lc0 = z * 2
lc1 = z * 2 + 1
add_bel_input(x, y, idx, "A0", x, y, "A{}_SLICE".format(lc0))
add_bel_input(x, y, idx, "B0", x, y, "B{}_SLICE".format(lc0))
add_bel_input(x, y, idx, "C0", x, y, "C{}_SLICE".format(lc0))
add_bel_input(x, y, idx, "D0", x, y, "D{}_SLICE".format(lc0))
add_bel_input(x, y, idx, "M0", x, y, "M{}_SLICE".format(lc0))
add_bel_input(x, y, idx, "A1", x, y, "A{}_SLICE".format(lc1))
add_bel_input(x, y, idx, "B1", x, y, "B{}_SLICE".format(lc1))
add_bel_input(x, y, idx, "C1", x, y, "C{}_SLICE".format(lc1))
add_bel_input(x, y, idx, "D1", x, y, "D{}_SLICE".format(lc1))
add_bel_input(x, y, idx, "M1", x, y, "M{}_SLICE".format(lc1))
add_bel_input(x, y, idx, "FCI", x, y, "FCI{}_SLICE".format(l if z > 0 else ""))
add_bel_input(x, y, idx, "FXA", x, y, "FXA{}_SLICE".format(l))
add_bel_input(x, y, idx, "FXB", x, y, "FXB{}_SLICE".format(l))
add_bel_input(x, y, idx, "CLK", x, y, "CLK{}_SLICE".format(z))
add_bel_input(x, y, idx, "LSR", x, y, "LSR{}_SLICE".format(z))
add_bel_input(x, y, idx, "CE", x, y, "CE{}_SLICE".format(z))
add_bel_output(x, y, idx, "F0", x, y, "F{}_SLICE".format(lc0))
add_bel_output(x, y, idx, "Q0", x, y, "Q{}_SLICE".format(lc0))
add_bel_output(x, y, idx, "F1", x, y, "F{}_SLICE".format(lc1))
add_bel_output(x, y, idx, "Q1", x, y, "Q{}_SLICE".format(lc1))
add_bel_output(x, y, idx, "FCO", x, y, "FCO{}_SLICE".format(l if z < 3 else ""))
def add_pio(x, y, z):
idx = len(loc_bels[x, y])
l = ("A", "B", "C", "D")[z]
name = "PIO" + l
loc_bels[x, y].append((name, "PIO", []))
add_bel_input(x, y, idx, "I", x, y, "PADDO{}_PIO".format(l))
add_bel_input(x, y, idx, "T", x, y, "PADDT{}_PIO".format(l))
add_bel_output(x, y, idx, "O", x, y, "JPADDI{}_PIO".format(l))
def add_bels(chip, x, y):
loc_bels[x, y] = []
tiles = chip.get_tiles_by_position(y, x)
num_slices = 0
num_pios = 0
for tile in tiles:
tt = tile.info.type
if tt == "PLC2":
num_slices = 4
elif "PICL0" in tt or "PICR0" in tt:
num_pios = 4
elif "PIOT0" in tt or "PIOB0" in tt:
num_pios = 2
for i in range(num_slices):
add_slice(x, y, i)
for i in range(num_pios):
add_pio(x, y, i)
# Import a location, deduplicating if appropriate
def import_location(rg, x, y):
rtile = rg.tiles[pytrellis.Location(x, y)]
arcs = [] # (src, dst, configurable, tiletype)
wires = [] # (name, uphill, downhill, belpin_uphill, belpins_downhill)
bels = [] # (name, [(pin, wire)])
for name in loc_wires[x, y]:
w = rtile.wires[rg.ident(name)]
arcs_uphill = []
arcs_downhill = []
belpins_uphill = []
belpins_downhill = []
for uh in w.uphill:
arcidx = loc_arc_indices[uh.loc.x, uh.loc.y][uh.id]
arcs_uphill.append((uh.loc.x - x, uh.loc.y - y, arcidx))
for dh in w.downhill:
arcidx = loc_arc_indices[dh.loc.x, dh.loc.y][dh.id]
arcs_downhill.append((dh.loc.x - x, dh.loc.y - y, arcidx))
for bp in wire_bel_pins_uphill[x, y][loc_wire_indices[x, y][name]]:
bel, pin = bp
bel_x, bel_y, bel_idx = bel
belpins_uphill.append(((bel_x - x, bel_y - y, bel_idx), pin))
for bp in wire_bel_pins_downhill[x, y][loc_wire_indices[x, y][name]]:
bel, pin = bp
bel_x, bel_y, bel_idx = bel
belpins_downhill.append(((bel_x - x, bel_y - y, bel_idx), pin))
assert len(belpins_uphill) <= 1
wires.append((name, tuple(arcs_downhill), tuple(arcs_uphill), tuple(belpins_uphill), tuple(belpins_downhill)))
for bel in loc_bels[x, y]:
name, beltype, pins = bel
xformed_pins = tuple((p[0], (p[1][0] - x, p[1][1] - y, p[1][2])) for p in pins)
bels.append((name, beltype, xformed_pins))
for arcidx in loc_arcs[x, y]:
a = rtile.arcs[arcidx]
source_wire = resolve_wirename(rg, a.source, x, y)
dest_wire = resolve_wirename(rg, a.sink, x, y)
arcs.append((source_wire, dest_wire, a.configurable, get_tiletype_index(rg.to_str(a.tiletype))))
tile_data = (tuple(wires), tuple(arcs), tuple(bels))
if tile_data in location_types:
type_at_location[x, y] = location_types[tile_data]
else:
idx = len(location_types)
location_types[tile_data] = idx
type_at_location[x, y] = idx
def main():
pytrellis.load_database(database.get_db_root())
print("Initialising chip...")
chip = pytrellis.Chip("LFE5U-25F")
print("Building routing graph...")
rg = chip.get_routing_graph()
max_row = chip.get_max_row()
max_col = chip.get_max_col()
print("Indexing wires...")
for y in range(0, max_row + 1):
for x in range(0, max_col + 1):
import_location_wires(rg, x, y)
print("Indexing arcs...")
for y in range(0, max_row + 1):
for x in range(0, max_col + 1):
index_location_arcs(rg, x, y)
print("Adding bels...")
for y in range(0, max_row + 1):
for x in range(0, max_col + 1):
add_bels(chip, x, y)
print("Importing tiles...")
for y in range(0, max_row + 1):
for x in range(0, max_col + 1):
print(" At R{}C{}".format(y, x))
import_location(rg, x, y)
if __name__ == "__main__":
main()
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