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router2: Changes for ECP5

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Signed-off-by: David Shah <dave@ds0.me>
This commit is contained in:
David Shah 2019-11-16 12:07:17 +00:00
parent abdaa9c8a1
commit a8351b265f
1 changed files with 19 additions and 1 deletions
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20
common/router2.cc
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@ -145,6 +145,10 @@ struct Router2
std::abs(nets.at(i).bb.y1 - nets.at(i).bb.y0) + std::abs(nets.at(i).bb.x1 - nets.at(i).bb.x0), 1);
nets.at(i).cx /= int(ni->users.size() + 1);
nets.at(i).cy /= int(ni->users.size() + 1);
if (ctx->debug)
log_info("%s: bb=(%d, %d)->(%d, %d) c=(%d, %d) hpwl=%d\n", ctx->nameOf(ni), nets.at(i).bb.x0,
nets.at(i).bb.y0, nets.at(i).bb.x1, nets.at(i).bb.y1, nets.at(i).cx, nets.at(i).cy,
nets.at(i).hpwl);
i++;
}
}
@ -359,7 +363,7 @@ struct Router2
// This could also be used to speed up forwards routing by a hybrid
// bidirectional approach
int backwards_iter = 0;
int backwards_limit = 125;
int backwards_limit = 10;
t.backwards_pip.clear();
t.backwards_queue.push(dst_wire);
while (!t.backwards_queue.empty() && backwards_iter < backwards_limit) {
@ -509,6 +513,12 @@ struct Router2
bool route_net(ThreadContext &t, NetInfo *net, bool is_mt)
{
#ifdef ARCH_ECP5
if (net->is_global)
return true;
#endif
ROUTE_LOG_DBG("Routing net '%s'...\n", ctx->nameOf(net));
// Nothing to do if net is undriven
@ -567,6 +577,10 @@ struct Router2
bool bind_and_check(NetInfo *net, int usr_idx)
{
#ifdef ARCH_ECP5
if (net->is_global)
return true;
#endif
bool success = true;
auto &nd = nets.at(net->udata);
auto &ad = nd.arcs.at(usr_idx);
@ -633,6 +647,10 @@ struct Router2
bool success = true;
std::vector<WireId> net_wires;
for (auto net : nets_by_udata) {
#ifdef ARCH_ECP5
if (net->is_global)
continue;
#endif
// Ripup wires and pips used by the net in nextpnr's structures
net_wires.clear();
for (auto &w : net->wires)