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| author | Clifford Wolf <clifford@clifford.at> | 2018-07-30 17:17:07 +0200 |
|---|---|---|
| committer | Clifford Wolf <clifford@clifford.at> | 2018-07-30 17:17:07 +0200 |
| commit | b12100837239e5c874bf7f384307bf790317d0a3 (patch) | |
| tree | 383ca03ef5e9736584fbfd2c3bfba1cfb5d8bd88 /ice40 | |
| parent | b09183db3bf5b08c1a1151e044f9df5f6dc445d8 (diff) | |
| download | nextpnr-b12100837239e5c874bf7f384307bf790317d0a3.tar.gz nextpnr-b12100837239e5c874bf7f384307bf790317d0a3.tar.bz2 nextpnr-b12100837239e5c874bf7f384307bf790317d0a3.zip | |
Towards better ice40 timing data
Signed-off-by: Clifford Wolf <clifford@clifford.at>
Diffstat (limited to 'ice40')
| -rw-r--r-- | ice40/chipdb.py | 28 |
1 files changed, 21 insertions, 7 deletions
diff --git a/ice40/chipdb.py b/ice40/chipdb.py index d7c9e2af..3ef58185 100644 --- a/ice40/chipdb.py +++ b/ice40/chipdb.py @@ -214,12 +214,18 @@ def wire_type(name): assert 0 return wt -def pipdelay(src, dst): +def pipdelay(src, dst, db): + if db is None: + return 0 + src = wire_names_r[src] dst = wire_names_r[dst] src_type = wire_type(src[2]) dst_type = wire_type(dst[2]) + if dst[2].startswith("local_"): + return db["LocalMux.I.O"] + if src_type == "LOCAL" and dst_type == "LOCAL": return 250 @@ -253,7 +259,15 @@ def pipdelay(src, dst): # print(src, dst, src_type, dst_type, file=sys.stderr) assert 0 +def wiredelay(wire, db): + if db is None: + return 0 + + wire = wire_names_r[wire] + wtype = wire_type(wire[2]) + # FIXME + return 0 def init_tiletypes(device): global num_tile_types, tile_sizes, tile_bits @@ -778,8 +792,8 @@ for wire in range(num_wires): pi = dict() pi["src"] = src pi["dst"] = wire - pi["fast_delay"] = pipdelay(src, wire) - pi["slow_delay"] = pipdelay(src, wire) + pi["fast_delay"] = pipdelay(src, wire, fast_timings) + pi["slow_delay"] = pipdelay(src, wire, slow_timings) pi["x"] = pip_xy[(src, wire)][0] pi["y"] = pip_xy[(src, wire)][1] pi["switch_mask"] = pip_xy[(src, wire)][2] @@ -803,8 +817,8 @@ for wire in range(num_wires): pi = dict() pi["src"] = wire pi["dst"] = dst - pi["fast_delay"] = pipdelay(wire, dst) - pi["slow_delay"] = pipdelay(wire, dst) + pi["fast_delay"] = pipdelay(wire, dst, fast_timings) + pi["slow_delay"] = pipdelay(wire, dst, slow_timings) pi["x"] = pip_xy[(wire, dst)][0] pi["y"] = pip_xy[(wire, dst)][1] pi["switch_mask"] = pip_xy[(wire, dst)][2] @@ -923,8 +937,8 @@ for wire, info in enumerate(wireinfo): else: bba.u32(0, "segments") - bba.u32(0, "fast_delay") - bba.u32(0, "slow_delay") + bba.u32(wiredelay(wire, fast_timings), "fast_delay") + bba.u32(wiredelay(wire, slow_timings), "slow_delay") bba.u8(info["x"], "x") bba.u8(info["y"], "y") |