def add_tile_bits(tile_db, baseaddr, offset, frames, words, height=None):
'''
Record data structure geometry for the given tile baseaddr
For most tiles there is only one baseaddr, but some like BRAM have multiple
Notes on multiple block types:
https://github.com/SymbiFlow/prjxray/issues/145
'''
bits = tile_db['bits']
block_type = util.addr2btype(baseaddr)
assert 0 <= offset <= 100, offset
assert 1 <= words <= 101
assert offset + words <= 101, (
tile_db, offset + words, offset, words, block_type)
assert block_type not in bits
block = bits.setdefault(block_type, {})
# FDRI address
block["baseaddr"] = '0x%08X' % baseaddr
# Number of frames this entry is sretched across
# that is the following FDRI addresses are used: range(baseaddr, baseaddr + frames)
block["frames"] = frames
# Index of first word used within each frame
block["offset"] = offset
# related to words...
# deprecated field? Don't worry about for now
# DSP has some differences between height and words
block["words"] = words
if height is None:
height = words
block["height"] = height
def add_tile_bits(tile_name,
tile_db,
baseaddr,
offset,
frames,
words,
tile_frames,
verbose=False):
'''
Record data structure geometry for the given tile baseaddr
For most tiles there is only one baseaddr, but some like BRAM have multiple
Notes on multiple block types:
https://github.com/SymbiFlow/prjxray/issues/145
'''
bits = tile_db['bits']
block_type = util.addr2btype(baseaddr)
# Extract the information about the maximal number of frames from the part's json
max_frames = tile_frames.get_tile_frames(baseaddr)
if frames > max_frames:
print(
"Warning: The number of frames specified for the tile {} ({}) exceeds the maximum allowed value ({}). Falling back to the maximum value."
.format(tile_name, frames, max_frames))
frames = max_frames
# If frames count is None then use the maximum
if frames is None:
frames = max_frames
assert offset <= 100, (tile_name, offset)
# Few rare cases at X=0 for double width tiles split in half => small negative offset
assert offset >= 0 or "IOB" in tile_name, (tile_name, hex(baseaddr),
offset)
assert 1 <= words <= 101, words
assert offset + words <= 101, (tile_name, offset + words, offset, words,
block_type)
baseaddr_str = '0x%08X' % baseaddr
block = bits.get(block_type, None)
if block is not None:
verbose and print("%s: existing defintion for %s" %
(tile_name, block_type))
assert block["baseaddr"] == baseaddr_str
assert block["frames"] == frames, (block, frames)
assert block["offset"] == offset, "%s; orig offset %s, new %s" % (
tile_name, block["offset"], offset)
assert block["words"] == words
return
block = bits.setdefault(block_type, {})
# FDRI address
block["baseaddr"] = baseaddr_str
# Number of frames this entry is sretched across
# that is the following FDRI addresses are used: range(baseaddr, baseaddr + frames)
block["frames"] = frames
# Index of first word used within each frame
block["offset"] = offset
# Number of words used by tile.
block["words"] = words
def make_tile_baseaddrs(tiles, site_baseaddr, verbose=False):
# Look up a base address by tile name
tile_baseaddrs = dict()
verbose and print('')
verbose and print('%u tiles' % len(tiles))
verbose and print("%u baseaddrs" % len(site_baseaddr))
added = 0
for tile in tiles:
for site_name in tile["sites"].keys():
if site_name not in site_baseaddr:
continue
framebaseaddr = site_baseaddr[site_name]
bt = util.addr2btype(framebaseaddr)
tile_baseaddr = tile_baseaddrs.setdefault(tile["name"], {})
if bt in tile_baseaddr:
# actually lets just fail these, better to remove at tcl level to speed up processing
assert 0, 'duplicate base address'
assert tile_baseaddr[bt] == [framebaseaddr, 0]
else:
tile_baseaddr[bt] = [framebaseaddr, 0]
verbose and print(
"baseaddr: %s.%s @ %s.0x%08x" %
(tile["name"], site_name, bt, framebaseaddr))
added += 1
assert added, "Failed to add any base addresses"
assert added == len(site_baseaddr)
return tile_baseaddrs
def run(fn_in, fn_out, verbose=False):
database = json.load(open(fn_in, "r"))
# Load a map of sites to base addresses
# Need to figure out the
# FIXME: generate frames from part file (or equivilent)
# See https://github.com/SymbiFlow/prjxray/issues/327
# FIXME: generate words from pitch
tdb_fns = [
("iob/build/segbits_tilegrid.tdb", 42, 4),
# FIXME: height
("mmcm/build/segbits_tilegrid.tdb", 30, 101),
# FIXME: height
("pll/build/segbits_tilegrid.tdb", 30, 101),
]
for (tdb_fn, frames, words) in tdb_fns:
for (tile, frame, wordidx) in load_db(tdb_fn):
tilej = database[tile]
bitsj = tilej['bits']
bt = util.addr2btype(frame)
verbose and print("Add %s %08X_%03u" % (tile, frame, wordidx))
add_tile_bits(tilej, frame, wordidx, frames, words)
# Save
json.dump(database,
open(fn_out, "w"),
sort_keys=True,
indent=4,
separators=(",", ": "))