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#!/usr/bin/env python3
import os, sys
device = "up5k"
# This script is designed to determine which DSPs have configuration bits
# not in their usual position, as in some cases DSP and IPConnect tiles have
# their config bits swapped
# Unfortunately, arbitrary configurations are not allowed by icecube, so
# we define a set that gives us maximum coverage (full coverage is not
# possible as one CBIT is never set)
allowed_configs = ["1110000010000001001110110", "0010000101000010111111111", "0001111000101100000000000"]
coverage = set()
for c in allowed_configs:
for i in range(25):
if c[i] == "1":
coverage.add(i)
assert len(coverage) >= 24
def parse_exp(f):
current_x = 0
current_y = 0
bits = set()
for line in f:
splitline = line.split(' ')
if splitline[0].endswith("_tile"):
current_x = int(splitline[1])
current_y = int(splitline[2])
elif splitline[0] == "IpConfig":
if splitline[1][:5] == "CBIT_":
bitidx = int(splitline[1][5:])
bits.add((current_x, current_y, bitidx))
return bits
dsp_locs = [( 0, 5, 0), ( 0, 10, 0), ( 0, 15, 0), ( 0, 23, 0),
(25, 5, 0), (25, 10, 0), (25, 15, 0), (25, 23, 0)]
dsp_data = {}
if not os.path.exists("./work_dsp_cbit"):
os.mkdir("./work_dsp_cbit")
for loc in dsp_locs:
x, y, z = loc
missing_bits = set()
new_bits = set()
for config in allowed_configs:
params = config[::-1]
with open("./work_dsp_cbit/dsp_cbit.v","w") as f:
print("""
module top(input clk, input a, input b, input c, input d, output y);
""", file=f)
print("""
SB_MAC16 #(
.C_REG(1'b%s),
.A_REG(1'b%s),
.B_REG(1'b%s),
.D_REG(1'b%s),
.TOP_8x8_MULT_REG(1'b%s),
.BOT_8x8_MULT_REG(1'b%s),
.PIPELINE_16x16_MULT_REG1(1'b%s),
.PIPELINE_16x16_MULT_REG2(1'b%s),
.TOPOUTPUT_SELECT(2'b%s),
.TOPADDSUB_LOWERINPUT(2'b%s),
.TOPADDSUB_UPPERINPUT(1'b%s),
.TOPADDSUB_CARRYSELECT(2'b%s),
.BOTOUTPUT_SELECT(2'b%s),
.BOTADDSUB_LOWERINPUT(2'b%s),
.BOTADDSUB_UPPERINPUT(1'b%s),
.BOTADDSUB_CARRYSELECT(2'b%s),
.MODE_8x8(1'b%s),
.A_SIGNED(1'b%s),
.B_SIGNED(1'b%s)
) dsp (
.CLK(clk),
.C(c),
.A(a),
.B(b),
.D(d),
.O(y)
);"""
% (
params[0], params[1], params[2], params[3],
params[4], params[5], params[6], params[7],
params[8:10][::-1], params[10:12][::-1], params[12], params[13:15][::-1],
params[15:17][::-1], params[17:19][::-1], params[19], params[20:22][::-1],
params[22], params[23], params[24]), file=f)
print("endmodule",file=f)
with open("./work_dsp_cbit/dsp_cbit.pcf","w") as f:
print("set_location dsp %d %d %d" % loc, file=f)
retval = os.system("bash ../../icecube.sh -" + device + " ./work_dsp_cbit/dsp_cbit.v > ./work_dsp_cbit/icecube.log 2>&1")
if retval != 0:
sys.stderr.write('ERROR: icecube returned non-zero error code\n')
sys.exit(1)
retval = os.system("../../../icebox/icebox_explain.py ./work_dsp_cbit/dsp_cbit.asc > ./work_dsp_cbit/dsp_cbit.exp")
if retval != 0:
sys.stderr.write('ERROR: icebox_explain returned non-zero error code\n')
sys.exit(1)
bits = set()
known = set()
with open('./work_dsp_cbit/dsp_cbit.exp', 'r') as f:
bits = parse_exp(f)
for i in range(25):
if params[i] == "1":
exp_pos = (x, y + (i // 8), i % 8)
if exp_pos not in bits:
missing_bits.add(exp_pos)
else:
known.add(exp_pos)
for bit in bits:
if bit not in known:
new_bits.add(bit)
if len(missing_bits) > 0 or len(new_bits) > 0:
print("DSP (%d, %d):" % (x, y))
for bit in missing_bits:
print("\tMissing (%d, %d, CBIT_%d)" % bit)
for bit in new_bits:
print("\tNew: (%d, %d, CBIT_%d)" % bit)
dsp_data[loc] = (missing_bits, new_bits)
with open("dsp_cbits_%s.txt" % device, 'w') as f:
for loc in dsp_data:
x, y, z = loc
missing_bits, new_bits = dsp_data[loc]
print("DSP (%d, %d):" % (x, y), file=f)
for bit in missing_bits:
print("\tMissing (%d, %d, CBIT_%d)" % bit,file=f)
for bit in new_bits:
print("\tNew: (%d, %d, CBIT_%d)" % bit,file=f)
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