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Reserve all CPE control signals in clock router (#1492)

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Lofty 2025-05-19 13:55:12 +01:00 committed by GitHub
parent 2b33800d77
commit 520616248e
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1 changed files with 23 additions and 26 deletions
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49
himbaechel/uarch/gatemate/route_clock.cc
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@ -72,40 +72,37 @@ void GateMateImpl::route_clock()
log_info("Routing clock nets...\n");
for (auto &net : ctx->nets) {
NetInfo *glb_net = net.second.get();
if (!glb_net->driver.cell || glb_net->driver.cell->type != id_BUFG)
for (auto &net_pair : ctx->nets) {
NetInfo *net = net_pair.second.get();
if (!net->driver.cell)
continue;
if (ctx->debug)
log_info(" reserving net '%s'\n", glb_net->name.c_str(ctx));
bool is_clk_net = false;
for (auto &usr : net->users) {
if (feeds_clk_port(usr)) {
is_clk_net = true;
bool is_global_clk = false;
for (auto &usr : glb_net->users) {
if (!feeds_clk_port(usr))
continue;
auto clk_sink_wire = ctx->getNetinfoSinkWire(net, usr, 0);
reserve(clk_sink_wire, net);
auto en_port = usr.cell->ports.at(id_EN);
auto sr_port = usr.cell->ports.at(id_SR);
auto en_port = usr.cell->ports.find(id_EN);
if (en_port != usr.cell->ports.end() && en_port->second.net != nullptr) {
auto en_sink_wire = ctx->getNetinfoSinkWire(
en_port->second.net, en_port->second.net->users.at(en_port->second.user_idx), 0);
reserve(en_sink_wire, en_port->second.net);
}
is_global_clk = true;
auto clk_sink_wire = ctx->getNetinfoSinkWire(glb_net, usr, 0);
reserve(clk_sink_wire, glb_net);
if (en_port.net != nullptr) {
auto en_sink_wire = ctx->getNetinfoSinkWire(en_port.net, en_port.net->users.at(en_port.user_idx), 0);
reserve(en_sink_wire, en_port.net);
}
if (sr_port.net != nullptr) {
auto sr_sink_wire = ctx->getNetinfoSinkWire(sr_port.net, sr_port.net->users.at(sr_port.user_idx), 0);
reserve(sr_sink_wire, sr_port.net);
auto sr_port = usr.cell->ports.find(id_SR);
if (sr_port != usr.cell->ports.end() && sr_port->second.net != nullptr) {
auto sr_sink_wire = ctx->getNetinfoSinkWire(
sr_port->second.net, sr_port->second.net->users.at(sr_port->second.user_idx), 0);
reserve(sr_sink_wire, sr_port->second.net);
}
}
}
if (is_global_clk)
clk_nets.push_back(glb_net);
if (net->driver.cell->type == id_BUFG && is_clk_net)
clk_nets.push_back(net);
}
for (auto glb_net : clk_nets) {