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author | David Shah <davey1576@gmail.com> | 2017-11-13 16:15:16 +0000 |
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committer | David Shah <davey1576@gmail.com> | 2017-11-17 15:08:58 +0000 |
commit | 64e3c1a9cd81e61d9a3b163c9e9f9390fa4c5c21 (patch) | |
tree | df2fde90d49ad463b7551ea3e8dfcd707f135e27 /icefuzz/tests/dsp_cbit/fuzz_dsp_cbit.py | |
parent | 88eebff7db9d76e418ccbddd884c4e617596a428 (diff) | |
download | icestorm-64e3c1a9cd81e61d9a3b163c9e9f9390fa4c5c21.tar.gz icestorm-64e3c1a9cd81e61d9a3b163c9e9f9390fa4c5c21.tar.bz2 icestorm-64e3c1a9cd81e61d9a3b163c9e9f9390fa4c5c21.zip |
Figure out DSP config bits for all locs
Diffstat (limited to 'icefuzz/tests/dsp_cbit/fuzz_dsp_cbit.py')
-rwxr-xr-x | icefuzz/tests/dsp_cbit/fuzz_dsp_cbit.py | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/icefuzz/tests/dsp_cbit/fuzz_dsp_cbit.py b/icefuzz/tests/dsp_cbit/fuzz_dsp_cbit.py new file mode 100755 index 0000000..79f376c --- /dev/null +++ b/icefuzz/tests/dsp_cbit/fuzz_dsp_cbit.py @@ -0,0 +1,132 @@ +#!/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) |