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#!/usr/bin/env python3
import getopt, sys, re
ignore_cells = set([
"ADTTRIBUF", "DL", "GIOBUG", "LUT_MUX", "MUX4",
"PLL40_2_FEEDBACK_PATH_DELAY", "PLL40_2_FEEDBACK_PATH_EXTERNAL",
"PLL40_2_FEEDBACK_PATH_PHASE_AND_DELAY", "PLL40_2_FEEDBACK_PATH_SIMPLE",
"PLL40_2F_FEEDBACK_PATH_DELAY", "PLL40_2F_FEEDBACK_PATH_EXTERNAL",
"PLL40_2F_FEEDBACK_PATH_PHASE_AND_DELAY", "PLL40_2F_FEEDBACK_PATH_SIMPLE",
"PLL40_FEEDBACK_PATH_DELAY", "PLL40_FEEDBACK_PATH_EXTERNAL",
"PLL40_FEEDBACK_PATH_PHASE_AND_DELAY", "PLL40_FEEDBACK_PATH_SIMPLE",
"PRE_IO_PIN_TYPE", "sync_clk_enable", "TRIBUF"
])
database = dict()
sdf_inputs = list()
txt_inputs = list()
output_mode = "txt"
label = "unknown"
edgefile = None
def usage():
print("""
Usage: python3 timings.py [options] [sdf_file..]
-t filename
read TXT file
-l label
label for HTML file title
-h edgefile
output HTML, use specified edge file
-s
output SDF (not TXT) format
""")
sys.exit(0)
try:
opts, args = getopt.getopt(sys.argv[1:], "t:l:h:s")
except:
usage()
for o, a in opts:
if o == "-t":
txt_inputs.append(a)
elif o == "-l":
label = a
elif o == "-h":
output_mode = "html"
edgefile = a
elif o == "-s":
output_mode = "sdf"
else:
usage()
sdf_inputs += args
convert = lambda text: int(text) if text.isdigit() else text.lower()
alphanum_key = lambda key: [ convert(c) for c in re.split('([0-9]+)', key) ]
alphanum_key_list = lambda l: [len(l)] + [ alphanum_key(s) for s in l ]
def skip_whitespace(text, cursor):
while cursor < len(text) and text[cursor] in [" ", "\t", "\r", "\n"]:
cursor += 1
return cursor
def parse_sdf(text, cursor):
cursor = skip_whitespace(text, cursor)
if cursor < len(text) and text[cursor] == "(":
expr = []
cursor += 1
while cursor < len(text) and text[cursor] != ")":
child, cursor = parse_sdf(text, cursor)
expr.append(child)
cursor = skip_whitespace(text, cursor)
return expr, cursor+1
if cursor < len(text) and text[cursor] == '"':
expr = '"'
cursor += 1
while cursor < len(text) and text[cursor] != '"':
expr += text[cursor]
cursor += 1
return expr + '"', cursor+1
expr = ""
while cursor < len(text) and text[cursor] not in [" ", "\t", "\r", "\n", "(", ")"]:
expr += text[cursor]
cursor += 1
return expr, cursor
def sdf_to_string(expr):
if type(expr) is list:
tokens = []
tokens.append("(")
first_child = True
for child in expr:
if not first_child:
tokens.append(" ")
tokens.append(sdf_to_string(child))
first_child = False
tokens.append(")")
return "".join(tokens)
else:
return expr
def dump_sdf(expr, indent=""):
if type(expr) is list:
if len(expr) > 0 and expr[0] in ["IOPATH", "SETUP", "HOLD", "CELLTYPE", "INSTANCE", "SDFVERSION",
"DESIGN", "DATE", "VENDOR", "DIVIDER", "TIMESCALE", "RECOVERY", "REMOVAL"]:
print(indent + sdf_to_string(expr))
else:
print("%s(%s" % (indent, expr[0] if len(expr) > 0 else ""))
for child in expr[1:]:
dump_sdf(child, indent + " ")
print("%s)" % indent)
else:
print("%s%s" % (indent, expr))
def generalize_instances(expr):
if type(expr) is list:
if len(expr) == 2 and expr[0] == "INSTANCE":
expr[1] = "*"
for child in expr:
generalize_instances(child)
def list_to_tuple(expr):
if type(expr) is list:
tup = []
for child in expr:
tup.append(list_to_tuple(child))
return tuple(tup)
return expr
def uniquify_cells(expr):
cache = set()
filtered_expr = []
for child in expr:
t = list_to_tuple(child)
if t not in cache:
filtered_expr.append(child)
cache.add(t)
return filtered_expr
def rewrite_celltype(celltype):
if celltype.startswith("PRE_IO_PIN_TYPE_"):
celltype = "PRE_IO_PIN_TYPE"
if celltype.startswith("Span4Mux"):
if celltype == "Span4Mux":
celltype = "Span4Mux_v4"
elif celltype == "Span4Mux_v":
celltype = "Span4Mux_v4"
elif celltype == "Span4Mux_h":
celltype = "Span4Mux_h4"
else:
match = re.match("Span4Mux_s(.*)_(h|v)", celltype)
if match:
celltype = "Span4Mux_%c%d" % (match.group(2), int(match.group(1)))
if celltype.startswith("Span12Mux"):
if celltype == "Span12Mux":
celltype = "Span12Mux_v12"
elif celltype == "Span12Mux_v":
celltype = "Span12Mux_v12"
elif celltype == "Span12Mux_h":
celltype = "Span12Mux_h12"
else:
match = re.match("Span12Mux_s(.*)_(h|v)", celltype)
if match:
celltype = "Span12Mux_%c%d" % (match.group(2), int(match.group(1)))
return celltype
def add_entry(celltype, entry):
entry = sdf_to_string(entry)
entry = entry.replace("(posedge ", "posedge:")
entry = entry.replace("(negedge ", "negedge:")
entry = entry.replace("(", "")
entry = entry.replace(")", "")
entry = entry.split()
if celltype.count("FEEDBACK") == 0 and entry[0] == "IOPATH" and entry[2].startswith("PLLOUT"):
entry[3] = "*:*:*"
entry[4] = "*:*:*"
database[celltype].add(tuple(entry))
###########################################
# Parse SDF input files
for filename in sdf_inputs:
print("### reading SDF file %s" % filename, file=sys.stderr)
intext = []
with open(filename, "r") as f:
for line in f:
line = re.sub("//.*", "", line)
intext.append(line)
sdfdata, _ = parse_sdf("".join(intext), 0)
generalize_instances(sdfdata)
sdfdata = uniquify_cells(sdfdata)
for cell in sdfdata:
if cell[0] != "CELL":
continue
celltype = None
for stmt in cell:
if stmt[0] == "CELLTYPE":
celltype = rewrite_celltype(stmt[1][1:-1])
if celltype == "SB_MAC16":
try:
with open(filename.replace(".sdf", ".dsp"), "r") as dspf:
celltype = dspf.readline().strip()
except:
break
database.setdefault(celltype, set())
if stmt[0] == "DELAY":
assert stmt[1][0] == "ABSOLUTE"
for entry in stmt[1][1:]:
assert entry[0] == "IOPATH"
add_entry(celltype, entry)
if stmt[0] == "TIMINGCHECK":
for entry in stmt[1:]:
add_entry(celltype, entry)
###########################################
# Parse TXT input files
for filename in txt_inputs:
print("### reading TXT file %s" % filename, file=sys.stderr)
with open(filename, "r") as f:
celltype = None
for line in f:
line = line.split()
if len(line) > 1:
if line[0] == "CELL":
celltype = rewrite_celltype(line[1])
database.setdefault(celltype, set())
else:
add_entry(celltype, line)
###########################################
# Filter database
for celltype in ignore_cells:
if celltype in database:
del database[celltype]
###########################################
# Create SDF output
if output_mode == "sdf":
print("(DELAYFILE")
print(" (SDFVERSION \"3.0\")")
print(" (TIMESCALE 1ps)")
def format_entry(entry):
text = []
for i in range(len(entry)):
if i > 2:
text.append("(%s)" % entry[i])
elif entry[i].startswith("posedge:"):
text.append("(posedge %s)" % entry[i].replace("posedge:", ""))
elif entry[i].startswith("negedge:"):
text.append("(negedge %s)" % entry[i].replace("negedge:", ""))
else:
text.append(entry[i])
return " ".join(text)
for celltype in sorted(database, key=alphanum_key):
print(" (CELL")
print(" (CELLTYPE \"%s\")" % celltype)
print(" (INSTANCE *)")
delay_abs_entries = list()
timingcheck_entries = list()
for entry in sorted(database[celltype], key=alphanum_key_list):
if entry[0] == "IOPATH":
delay_abs_entries.append(entry)
else:
timingcheck_entries.append(entry)
if len(delay_abs_entries) != 0:
print(" (DELAY")
print(" (ABSOLUTE")
for entry in delay_abs_entries:
print(" (%s)" % format_entry(entry))
print(" )")
print(" )")
if len(timingcheck_entries) != 0:
print(" (TIMINGCHECK")
for entry in timingcheck_entries:
print(" (%s)" % format_entry(entry))
print(" )")
print(" )")
print(")")
###########################################
# Create TXT output
if output_mode == "txt":
for celltype in sorted(database, key=alphanum_key):
print("CELL %s" % celltype)
entries_lens = list()
for entry in database[celltype]:
for i in range(len(entry)):
if i < len(entries_lens):
entries_lens[i] = max(entries_lens[i], len(entry[i]))
else:
entries_lens.append(len(entry[i]))
for entry in sorted(database[celltype], key=alphanum_key_list):
for i in range(len(entry)):
print("%s%-*s" % (" " if i != 0 else "", entries_lens[i] if i != len(entry)-1 else 0, entry[i]), end="")
print()
print()
###########################################
# Create HTML output
if output_mode == "html":
print("<h1>IceStorm Timing Model: %s</h1>" % label)
edge_celltypes = set()
source_by_sink_desc = dict()
sink_by_source_desc = dict()
with open(edgefile, "r") as f:
for line in f:
source, sink = line.split()
source_cell, source_port = source.split(".")
sink_cell, sink_port = sink.split(".")
source_cell = rewrite_celltype(source_cell)
sink_cell = rewrite_celltype(sink_cell)
assert source_cell not in ignore_cells
assert sink_cell not in ignore_cells
if source_cell in ["GND", "VCC"]:
continue
source_by_sink_desc.setdefault(sink_cell, set())
sink_by_source_desc.setdefault(source_cell, set())
source_by_sink_desc[sink_cell].add((sink_port, source_cell, source_port))
sink_by_source_desc[source_cell].add((source_port, sink_cell, sink_port))
edge_celltypes.add(source_cell)
edge_celltypes.add(sink_cell)
print("<div style=\"-webkit-column-count: 3; -moz-column-count: 3; column-count: 3;\"><ul style=\"margin:0\">")
for celltype in sorted(database, key=alphanum_key):
if celltype not in edge_celltypes:
print("### ignoring unused cell type %s" % celltype, file=sys.stderr)
else:
print("<li><a href=\"#%s\">%s</a></li>" % (celltype, celltype))
print("</ul></div>")
for celltype in sorted(database, key=alphanum_key):
if celltype not in edge_celltypes:
continue
print("<p><hr></p>")
print("<h2><a name=\"%s\">%s</a></h2>" % (celltype, celltype))
if celltype in source_by_sink_desc:
print("<h3>Sources driving this cell type:</h3>")
print("<table width=\"600\" border>")
print("<tr><th>Input Port</th><th>Source Cell</th><th>Source Port</th></tr>")
for entry in sorted(source_by_sink_desc[celltype], key=alphanum_key_list):
print("<tr><td>%s</td><td><a href=\"#%s\">%s</a></td><td>%s</td></tr>" % (entry[0], entry[1], entry[1], entry[2]))
print("</table>")
if celltype in sink_by_source_desc:
print("<h3>Sinks driven by this cell type:</h3>")
print("<table width=\"600\" border>")
print("<tr><th>Output Port</th><th>Sink Cell</th><th>Sink Port</th></tr>")
for entry in sorted(sink_by_source_desc[celltype], key=alphanum_key_list):
print("<tr><td>%s</td><td><a href=\"#%s\">%s</a></td><td>%s</td></tr>" % (entry[0], entry[1], entry[1], entry[2]))
print("</table>")
delay_abs_entries = list()
timingcheck_entries = list()
for entry in sorted(database[celltype], key=alphanum_key_list):
if entry[0] == "IOPATH":
delay_abs_entries.append(entry)
else:
timingcheck_entries.append(entry)
if len(delay_abs_entries) > 0:
print("<h3>Propagation Delays:</h3>")
print("<table width=\"800\" border>")
print("<tr><th rowspan=\"2\">Input Port</th><th rowspan=\"2\">Output Port</th>")
print("<th colspan=\"3\">Low-High Transition</th><th colspan=\"3\">High-Low Transition</th></tr>")
print("<tr><th>Min</th><th>Typ</th><th>Max</th><th>Min</th><th>Typ</th><th>Max</th></tr>")
for entry in delay_abs_entries:
print("<tr><td>%s</td><td>%s</td>" % (entry[1].replace(":", " "), entry[2].replace(":", " ")), end="")
print("<td>%s</td><td>%s</td><td>%s</td>" % tuple(entry[3].split(":")), end="")
print("<td>%s</td><td>%s</td><td>%s</td>" % tuple(entry[4].split(":")), end="")
print("</tr>")
print("</table>")
if len(timingcheck_entries) > 0:
print("<h3>Timing Checks:</h3>")
print("<table width=\"800\" border>")
print("<tr><th rowspan=\"2\">Check Type</th><th rowspan=\"2\">Input Port</th>")
print("<th rowspan=\"2\">Output Port</th><th colspan=\"3\">Timing</th></tr>")
print("<tr><th>Min</th><th>Typ</th><th>Max</th></tr>")
for entry in timingcheck_entries:
print("<tr><td>%s</td><td>%s</td><td>%s</td>" % (entry[0], entry[1].replace(":", " "), entry[2].replace(":", " ")), end="")
print("<td>%s</td><td>%s</td><td>%s</td>" % tuple(entry[3].split(":")), end="")
print("</tr>")
print("</table>")
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