| #!/usr/bin/env python3 |
| # -*- coding: utf-8 -*- |
| # |
| # Copyright (C) 2017-2020 The Project X-Ray Authors. |
| # |
| # Use of this source code is governed by a ISC-style |
| # license that can be found in the LICENSE file or at |
| # https://opensource.org/licenses/ISC |
| # |
| # SPDX-License-Identifier: ISC |
| |
| import sys, os, json |
| import pickle |
| |
| from prjxray.util import OpenSafeFile |
| |
| class MergeFind: |
| def __init__(self): |
| self.db = dict() |
| |
| def merge(self, a, b): |
| a = self.find(a) |
| b = self.find(b) |
| if a != b: |
| self.db[a] = b |
| |
| def find(self, a): |
| if a in self.db: |
| c = self.find(self.db[a]) |
| self.db[a] = c |
| return c |
| return a |
| |
| |
| def db_gen(): |
| print("Reading database..") |
| |
| with OpenSafeFile("%s/%s/tilegrid.json" % (os.getenv("XRAY_DATABASE_DIR"), |
| os.getenv("XRAY_DATABASE")), "r") as f: |
| tilegrid = json.load(f) |
| |
| with OpenSafeFile("%s/%s/tileconn.json" % (os.getenv("XRAY_DATABASE_DIR"), |
| os.getenv("XRAY_DATABASE")), "r") as f: |
| tileconn = json.load(f) |
| |
| type_to_tiles = dict() |
| grid_to_tile = dict() |
| nodes = MergeFind() |
| |
| for tile, tiledata in tilegrid.items(): |
| if tiledata["type"] not in type_to_tiles: |
| type_to_tiles[tiledata["type"]] = list() |
| type_to_tiles[tiledata["type"]].append(tile) |
| grid_to_tile[(tiledata["grid_x"], tiledata["grid_y"])] = tile |
| |
| print("Processing tileconn..") |
| |
| for entry in tileconn: |
| type_a, type_b = entry["tile_types"] |
| for tile_a in type_to_tiles[type_a]: |
| tiledata_a = tilegrid[tile_a] |
| grid_a = (tiledata_a["grid_x"], tiledata_a["grid_y"]) |
| grid_b = ( |
| grid_a[0] + entry["grid_deltas"][0], |
| grid_a[1] + entry["grid_deltas"][1]) |
| |
| if grid_b not in grid_to_tile: |
| continue |
| |
| tile_b = grid_to_tile[grid_b] |
| tiledata_b = tilegrid[tile_b] |
| |
| if tiledata_b["type"] != type_b: |
| continue |
| |
| for pair in entry["wire_pairs"]: |
| nodes.merge((tile_a, pair[0]), (tile_b, pair[1])) |
| |
| print("Processing PIPs..") |
| |
| node_node_pip = dict() |
| reverse_node_node = dict() |
| |
| for tile_type in ["int_l", "int_r"]: |
| with OpenSafeFile("%s/%s/segbits_%s.db" % |
| (os.getenv("XRAY_DATABASE_DIR"), os.getenv("XRAY_DATABASE"), |
| tile_type), "r") as f: |
| for line in f: |
| _, dst, src = line.split()[0].split(".") |
| for tile in type_to_tiles[tile_type.upper()]: |
| src_node = nodes.find((tile, src)) |
| dst_node = nodes.find((tile, dst)) |
| if src_node not in node_node_pip: |
| node_node_pip[src_node] = dict() |
| if dst_node not in reverse_node_node: |
| reverse_node_node[dst_node] = set() |
| node_node_pip[src_node][dst_node] = "%s.%s.%s" % ( |
| tile, dst, src) |
| reverse_node_node[dst_node].add(src_node) |
| |
| return type_to_tiles, grid_to_tile, nodes, node_node_pip, reverse_node_node |
| |
| |
| def db_load(): |
| # Takes a while. Speed things up |
| picklef = os.getenv('XRAY_DIR') + '/tools/simpleroute.p' |
| if os.path.exists(picklef): |
| #print('Pickle: load') |
| db_res = pickle.load(open(picklef, 'rb')) |
| else: |
| #print('Pickle: rebuilding') |
| db_res = db_gen() |
| #print('Pickle: save') |
| pickle.dump(db_res, open(picklef, 'wb')) |
| return db_res |
| |
| |
| def route(args): |
| type_to_tiles, grid_to_tile, nodes, node_node_pip, reverse_node_node = db_load( |
| ) |
| |
| active_pips = set() |
| blocked_nodes = set() |
| |
| for argidx in range((len(args)) // 2): |
| src_tile, src_wire = args[2 * argidx].split("/") |
| dst_tile, dst_wire = args[2 * argidx + 1].split("/") |
| |
| src_node = nodes.find((src_tile, src_wire)) |
| dst_node = nodes.find((dst_tile, dst_wire)) |
| |
| print("Routing %s -> %s:" % (src_node, dst_node)) |
| |
| node_scores = dict() |
| |
| def write_scores(nodes, count): |
| next_nodes = set() |
| for n in nodes: |
| if n in node_scores: |
| continue |
| node_scores[n] = count |
| if n == src_node: |
| return |
| if n in reverse_node_node: |
| for nn in reverse_node_node[n]: |
| if nn not in node_scores and nn not in blocked_nodes: |
| next_nodes.add(nn) |
| write_scores(next_nodes, count + 1) |
| |
| try: |
| write_scores(set([dst_node]), 1) |
| except RecursionError as e: |
| raise Exception( |
| "Could not find route for node %s" % (dst_node, )) from None |
| print(" route length: %d" % node_scores[src_node]) |
| |
| count = 0 |
| c = src_node |
| blocked_nodes.add(c) |
| print(" %4d: %s" % (count, c)) |
| |
| score = node_scores[src_node] |
| while c != dst_node: |
| nn = None |
| for n in node_node_pip[c].keys(): |
| if n in node_scores and node_scores[n] < score: |
| nn, score = n, node_scores[n] |
| |
| pip = node_node_pip[c][nn] |
| active_pips.add(pip) |
| print(" %s" % pip) |
| |
| count += 1 |
| c = nn |
| blocked_nodes.add(c) |
| print(" %4d: %s" % (count, c)) |
| |
| print("====") |
| pipnames = list() |
| |
| for pip in sorted(active_pips): |
| tile, dst, src = pip.split(".") |
| pipnames.append("%s/%s.%s->>%s" % (tile, tile[0:5], src, dst)) |
| |
| print( |
| "highlight_objects -color orange [get_nodes -of_objects [get_wires {%s}]]" |
| % " ".join(["%s/%s" % n for n in sorted(blocked_nodes)])) |
| print( |
| "highlight_objects -color orange [get_pips {%s}]" % " ".join(pipnames)) |
| |
| print("====") |
| for pip in sorted(active_pips): |
| print(pip) |
| return active_pips |
| |
| |
| if __name__ == '__main__': |
| if len(sys.argv) == 1 or (len(sys.argv) % 2) != 1: |
| print() |
| print("Usage: %s src1 dst1 [src2 dst2 [...]]" % sys.argv[0]) |
| print("Where entires as tile/wire") |
| print() |
| print( |
| "Example: %s VBRK_X29Y140/VBRK_ER1BEG2 VFRAME_X47Y113/VFRAME_EL1BEG2" |
| % sys.argv[0]) |
| print() |
| sys.exit(1) |
| route(sys.argv[1:]) |
