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#!/usr/bin/env python3
#
# Copyright (C) 2015 Clifford Wolf <clifford@clifford.at>
#
# Permission to use, copy, modify, and/or distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#
import icebox
import getopt, sys, re
print_bits = False
print_map = False
single_tile = None
print_all = False
def usage():
print("""
Usage: icebox_explain [options] [bitmap.asc]
-b
print config bit names for each config statement
-m
print tile config bitmaps
-A
don't skip uninteresting tiles
-t '<x-coordinate> <y-coordinate>'
print only the specified tile
""")
sys.exit(0)
try:
opts, args = getopt.getopt(sys.argv[1:], "bmAt:")
except:
usage()
for o, a in opts:
if o == "-b":
print_bits = True
elif o == "-m":
print_map = True
elif o == "-A":
print_all = True
elif o == "-t":
single_tile = tuple([int(s) for s in a.split()])
else:
usage()
if len(args) == 0:
args.append("/dev/stdin")
if len(args) != 1:
usage()
print("Reading file '%s'.." % args[0])
ic = icebox.iceconfig()
ic.read_file(args[0])
print("Fabric size (without IO tiles): %d x %d" % (ic.max_x-1, ic.max_y-1))
def print_tile(stmt, ic, x, y, tile, db):
if single_tile is not None and single_tile != (x, y):
return
bits = set()
mapped_bits = set()
for k, line in enumerate(tile):
for i in range(len(line)):
if line[i] == "1":
bits.add("B%d[%d]" % (k, i))
else:
bits.add("!B%d[%d]" % (k, i))
if re.search(r"logic_tile", stmt):
active_luts = set([i for i in range(8) if "1" in icebox.get_lutff_bits(tile, i)])
text = set()
used_lc = set()
text_default_mask = 0
for entry in db:
if re.match(r"LC_", entry[1]):
continue
if entry[1] in ("routing", "buffer"):
if not ic.tile_has_net(x, y, entry[2]): continue
if not ic.tile_has_net(x, y, entry[3]): continue
match = True
for bit in entry[0]:
if not bit in bits:
match = False
if match:
for bit in entry[0]:
mapped_bits.add(bit)
if entry[1] == "IoCtrl" and entry[2] == "IE_0":
text_default_mask |= 1
if entry[1] == "IoCtrl" and entry[2] == "IE_1":
text_default_mask |= 2
if entry[1] == "RamConfig" and entry[2] == "PowerUp":
text_default_mask |= 4
if print_bits:
text.add("<%s> %s" % (" ".join(entry[0]), " ".join(entry[1:])))
else:
text.add(" ".join(entry[1:]))
bitinfo = list()
print_bitinfo = False
for k, line in enumerate(tile):
bitinfo.append("")
extra_text = ""
for i in range(len(line)):
if 36 <= i <= 45 and re.search(r"logic_tile", stmt):
lutff_idx = k // 2
lutff_bitnum = (i-36) + 10*(k%2)
if line[i] == "1":
used_lc.add(lutff_idx)
bitinfo[-1] += "*"
else:
bitinfo[-1] += "-"
elif line[i] == "1" and "B%d[%d]" % (k, i) not in mapped_bits:
print_bitinfo = True
extra_text += " B%d[%d]" % (k, i)
bitinfo[-1] += "?"
else:
bitinfo[-1] += "+" if line[i] == "1" else "-"
bitinfo[-1] += extra_text
for lcidx in sorted(used_lc):
lutff_options = "".join(icebox.get_lutff_seq_bits(tile, lcidx))
if lutff_options[0] == "1": lutff_options += " CarryEnable"
if lutff_options[1] == "1": lutff_options += " DffEnable"
if lutff_options[2] == "1": lutff_options += " Set_NoReset"
if lutff_options[3] == "1": lutff_options += " AsyncSetReset"
text.add("LC_%d %s %s" % (lcidx, "".join(icebox.get_lutff_lut_bits(tile, lcidx)), lutff_options))
if not print_bitinfo and not print_all:
if text_default_mask == 3 and len(text) == 2:
return
if text_default_mask == 4 and len(text) == 1:
return
if len(text) or print_bitinfo or print_all:
print("\n%s" % stmt)
if print_bitinfo:
print("Warning: No DB entries for some bits:")
if print_bitinfo or print_map:
for k, line in enumerate(bitinfo):
print("%4s %s" % ("B%d" % k, line))
for line in sorted(text):
print(line)
for idx in ic.io_tiles:
print_tile(".io_tile %d %d" % idx, ic, idx[0], idx[1], ic.io_tiles[idx], ic.tile_db(idx[0], idx[1]))
for idx in ic.logic_tiles:
print_tile(".logic_tile %d %d" % idx, ic, idx[0], idx[1], ic.logic_tiles[idx], ic.tile_db(idx[0], idx[1]))
for idx in ic.ramb_tiles:
print_tile(".ramb_tile %d %d" % idx, ic, idx[0], idx[1], ic.ramb_tiles[idx], ic.tile_db(idx[0], idx[1]))
for idx in ic.ramt_tiles:
print_tile(".ramt_tile %d %d" % idx, ic, idx[0], idx[1], ic.ramt_tiles[idx], ic.tile_db(idx[0], idx[1]))
for bit in ic.extra_bits:
print()
print(".extra_bit %d %d %d" % bit)
print(" ".join(ic.lookup_extra_bit(bit)))
print()
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