diff options
Diffstat (limited to 'fpga_interchange')
| -rw-r--r-- | fpga_interchange/arch.h | 18 | ||||
| -rw-r--r-- | fpga_interchange/chipdb.h | 3 | ||||
| -rw-r--r-- | fpga_interchange/site_router.cc | 12 |
3 files changed, 23 insertions, 10 deletions
diff --git a/fpga_interchange/arch.h b/fpga_interchange/arch.h index 0fb4f462..7873a8ec 100644 --- a/fpga_interchange/arch.h +++ b/fpga_interchange/arch.h @@ -859,6 +859,9 @@ struct Arch : ArchAPI<ArchRanges> const TileStatus &tile_status = iter->second; const CellInfo *cell = tile_status.boundcells[bel.index]; + auto &bel_data = bel_info(chip_info, bel); + auto &site_status = get_site_status(tile_status, bel_data); + if (cell != nullptr) { if (!dedicated_interconnect.isBelLocationValid(bel, cell)) return false; @@ -873,14 +876,23 @@ struct Arch : ArchAPI<ArchRanges> if (!is_cell_valid_constraints(cell, tile_status, explain_constraints)) { return false; } + + for (auto ci : site_status.cells_in_site) { + if (ci->cluster != ClusterId() && ci->cluster != cell->cluster && + cluster_info(chip_info, clusters.at(ci->cluster).index).disallow_other_cells) + return false; + + if (cell->cluster != ClusterId() && ci->cluster != cell->cluster && + cluster_info(chip_info, clusters.at(cell->cluster).index).disallow_other_cells) + return false; + } } // Still check site status if cell is nullptr; as other bels in the site could be illegal (for example when // dedicated paths can no longer be used after ripping up a cell) - auto &bel_data = bel_info(chip_info, bel); - bool site_status = get_site_status(tile_status, bel_data).checkSiteRouting(getCtx(), tile_status); + bool routing_status = site_status.checkSiteRouting(getCtx(), tile_status); - return site_status; + return routing_status; } CellInfo *getClusterRootCell(ClusterId cluster) const override; diff --git a/fpga_interchange/chipdb.h b/fpga_interchange/chipdb.h index 9ebbc1f3..85dc7f25 100644 --- a/fpga_interchange/chipdb.h +++ b/fpga_interchange/chipdb.h @@ -34,7 +34,7 @@ NEXTPNR_NAMESPACE_BEGIN * kExpectedChipInfoVersion */ -static constexpr int32_t kExpectedChipInfoVersion = 13; +static constexpr int32_t kExpectedChipInfoVersion = 14; // Flattened site indexing. // @@ -422,6 +422,7 @@ NPNR_PACKED_STRUCT(struct ClusterPOD { RelSlice<ChainablePortPOD> chainable_ports; RelSlice<ClusterCellPortPOD> cluster_cells_map; uint32_t out_of_site_clusters; + uint32_t disallow_other_cells; }); NPNR_PACKED_STRUCT(struct ChipInfoPOD { diff --git a/fpga_interchange/site_router.cc b/fpga_interchange/site_router.cc index 947081f4..a4781ed3 100644 --- a/fpga_interchange/site_router.cc +++ b/fpga_interchange/site_router.cc @@ -192,7 +192,7 @@ struct SiteExpansionLoop } // Expand from wire specified, always downhill. - bool expand_net(const SiteArch *ctx, SiteRoutingCache *site_routing_cache, const SiteNetInfo *net) + bool expand_net(const SiteArch *ctx, SiteRoutingCache *site_routing_cache, const SiteNetInfo *net, bool cache_disabled = false) { if (net->driver == net_driver && net->users == net_users) { return expand_result; @@ -203,7 +203,7 @@ struct SiteExpansionLoop net_driver = net->driver; net_users = net->users; - if (site_routing_cache->get_solution(ctx, *net, &solution)) { + if (!cache_disabled && site_routing_cache->get_solution(ctx, *net, &solution)) { expand_result = true; return expand_result; } @@ -316,7 +316,7 @@ struct SiteExpansionLoop targets.erase(wire); } - if (targets.empty()) { + if (!cache_disabled && targets.empty()) { site_routing_cache->add_solutions(ctx, *net, solution); } @@ -699,7 +699,7 @@ static bool find_solution_via_backtrack(SiteArch *ctx, std::vector<PossibleSolut } static bool route_site(SiteArch *ctx, SiteRoutingCache *site_routing_cache, RouteNodeStorage *node_storage, - bool explain) + bool explain, bool cache_disabled = false) { // Overview: // - Starting from each site net source, expand the site routing graph @@ -723,7 +723,7 @@ static bool route_site(SiteArch *ctx, SiteRoutingCache *site_routing_cache, Rout expansions.push_back(net->net->loop); SiteExpansionLoop *router = expansions.back(); - if (!router->expand_net(ctx, site_routing_cache, net)) { + if (!router->expand_net(ctx, site_routing_cache, net, cache_disabled)) { if (verbose_site_router(ctx) || explain) { log_info("Net %s expansion failed to reach all users, site is unroutable!\n", ctx->nameOfNet(net)); } @@ -1415,7 +1415,7 @@ void SiteRouter::bindSiteRouting(Context *ctx) block_lut_outputs(&site_arch, blocked_wires); block_cluster_wires(&site_arch); reserve_site_ports(&site_arch); - NPNR_ASSERT(route_site(&site_arch, &ctx->site_routing_cache, &ctx->node_storage, /*explain=*/false)); + NPNR_ASSERT(route_site(&site_arch, &ctx->site_routing_cache, &ctx->node_storage, /*explain=*/false, /*cache_disabled=*/true)); check_routing(site_arch); apply_routing(ctx, site_arch, lut_thrus); |