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-rw-r--r--common/route.cc107
1 files changed, 52 insertions, 55 deletions
diff --git a/common/route.cc b/common/route.cc
index a4127532..080440d6 100644
--- a/common/route.cc
+++ b/common/route.cc
@@ -44,15 +44,14 @@ struct QueuedWire
};
};
-void ripup_net(Design *design, IdString net_name)
+void ripup_net(Context *ctx, IdString net_name)
{
- auto &chip = design->chip;
- auto net_info = design->nets.at(net_name);
+ auto net_info = ctx->nets.at(net_name);
for (auto &it : net_info->wires) {
if (it.second != PipId())
- chip.unbindPip(it.second);
- chip.unbindWire(it.first);
+ ctx->unbindPip(it.second);
+ ctx->unbindWire(it.first);
}
net_info->wires.clear();
@@ -66,11 +65,10 @@ struct Router
delay_t maxDelay = 0.0;
WireId failedDest;
- Router(Design *design, IdString net_name, bool verbose, bool ripup = false,
+ Router(Context *ctx, IdString net_name, bool verbose, bool ripup = false,
delay_t ripup_penalty = 0)
{
- auto &chip = design->chip;
- auto net_info = design->nets.at(net_name);
+ auto net_info = ctx->nets.at(net_name);
if (verbose)
log("Routing net %s.\n", net_name.c_str());
@@ -87,7 +85,7 @@ struct Router
net_info->driver.cell->type.c_str());
if (verbose)
- log(" Source bel: %s\n", chip.getBelName(src_bel).c_str());
+ log(" Source bel: %s\n", ctx->getBelName(src_bel).c_str());
IdString driver_port = net_info->driver.port;
@@ -95,22 +93,22 @@ struct Router
if (driver_port_it != net_info->driver.cell->pins.end())
driver_port = driver_port_it->second;
- auto src_wire = chip.getWireBelPin(src_bel, portPinFromId(driver_port));
+ auto src_wire = ctx->getWireBelPin(src_bel, portPinFromId(driver_port));
if (src_wire == WireId())
log_error("No wire found for port %s (pin %s) on source cell %s "
"(bel %s).\n",
net_info->driver.port.c_str(), driver_port.c_str(),
net_info->driver.cell->name.c_str(),
- chip.getBelName(src_bel).c_str());
+ ctx->getBelName(src_bel).c_str());
if (verbose)
- log(" Source wire: %s\n", chip.getWireName(src_wire).c_str());
+ log(" Source wire: %s\n", ctx->getWireName(src_wire).c_str());
std::unordered_map<WireId, DelayInfo> src_wires;
src_wires[src_wire] = DelayInfo();
net_info->wires[src_wire] = PipId();
- chip.bindWire(src_wire, net_name);
+ ctx->bindWire(src_wire, net_name);
for (auto &user_it : net_info->users) {
if (verbose)
@@ -126,7 +124,7 @@ struct Router
if (verbose)
log(" Destination bel: %s\n",
- chip.getBelName(dst_bel).c_str());
+ ctx->getBelName(dst_bel).c_str());
IdString user_port = user_it.port;
@@ -136,20 +134,20 @@ struct Router
user_port = user_port_it->second;
auto dst_wire =
- chip.getWireBelPin(dst_bel, portPinFromId(user_port));
+ ctx->getWireBelPin(dst_bel, portPinFromId(user_port));
if (dst_wire == WireId())
log_error("No wire found for port %s (pin %s) on destination "
"cell %s (bel %s).\n",
user_it.port.c_str(), user_port.c_str(),
user_it.cell->name.c_str(),
- chip.getBelName(dst_bel).c_str());
+ ctx->getBelName(dst_bel).c_str());
if (verbose) {
log(" Destination wire: %s\n",
- chip.getWireName(dst_wire).c_str());
+ ctx->getWireName(dst_wire).c_str());
log(" Path delay estimate: %.2f\n",
- float(chip.estimateDelay(src_wire, dst_wire)));
+ float(ctx->estimateDelay(src_wire, dst_wire)));
}
std::unordered_map<WireId, QueuedWire> visited;
@@ -162,7 +160,7 @@ struct Router
qw.wire = it.first;
qw.pip = PipId();
qw.delay = it.second.avgDelay();
- qw.togo = chip.estimateDelay(qw.wire, dst_wire);
+ qw.togo = ctx->estimateDelay(qw.wire, dst_wire);
queue.push(qw);
visited[qw.wire] = qw;
@@ -172,26 +170,26 @@ struct Router
QueuedWire qw = queue.top();
queue.pop();
- for (auto pip : chip.getPipsDownhill(qw.wire)) {
+ for (auto pip : ctx->getPipsDownhill(qw.wire)) {
delay_t next_delay = qw.delay;
IdString ripupNet = net_name;
visitCnt++;
- if (!chip.checkPipAvail(pip)) {
+ if (!ctx->checkPipAvail(pip)) {
if (!ripup)
continue;
- ripupNet = chip.getPipNet(pip, true);
+ ripupNet = ctx->getPipNet(pip, true);
if (ripupNet == net_name)
continue;
}
- WireId next_wire = chip.getPipDstWire(pip);
- next_delay += chip.getPipDelay(pip).avgDelay();
+ WireId next_wire = ctx->getPipDstWire(pip);
+ next_delay += ctx->getPipDelay(pip).avgDelay();
- if (!chip.checkWireAvail(next_wire)) {
+ if (!ctx->checkWireAvail(next_wire)) {
if (!ripup)
continue;
- ripupNet = chip.getWireNet(next_wire, true);
+ ripupNet = ctx->getWireNet(next_wire, true);
if (ripupNet == net_name)
continue;
}
@@ -207,7 +205,7 @@ struct Router
if (verbose)
log("Found better route to %s. Old vs new delay "
"estimate: %.2f %.2f\n",
- chip.getWireName(next_wire).c_str(),
+ ctx->getWireName(next_wire).c_str(),
float(visited.at(next_wire).delay),
float(next_delay));
#endif
@@ -218,7 +216,7 @@ struct Router
next_qw.wire = next_wire;
next_qw.pip = pip;
next_qw.delay = next_delay;
- next_qw.togo = chip.estimateDelay(next_wire, dst_wire);
+ next_qw.togo = ctx->estimateDelay(next_wire, dst_wire);
visited[next_qw.wire] = next_qw;
queue.push(next_qw);
}
@@ -227,13 +225,13 @@ struct Router
if (visited.count(dst_wire) == 0) {
if (verbose)
log("Failed to route %s -> %s.\n",
- chip.getWireName(src_wire).c_str(),
- chip.getWireName(dst_wire).c_str());
+ ctx->getWireName(src_wire).c_str(),
+ ctx->getWireName(dst_wire).c_str());
else if (ripup)
log_info("Failed to route %s -> %s.\n",
- chip.getWireName(src_wire).c_str(),
- chip.getWireName(dst_wire).c_str());
- ripup_net(design, net_name);
+ ctx->getWireName(src_wire).c_str(),
+ ctx->getWireName(dst_wire).c_str());
+ ripup_net(ctx, net_name);
failedDest = dst_wire;
return;
}
@@ -251,35 +249,35 @@ struct Router
while (1) {
if (verbose)
log(" %8.2f %s\n", float(visited[cursor].delay),
- chip.getWireName(cursor).c_str());
+ ctx->getWireName(cursor).c_str());
if (src_wires.count(cursor))
break;
- IdString conflicting_net = chip.getWireNet(cursor, true);
+ IdString conflicting_net = ctx->getWireNet(cursor, true);
if (conflicting_net != IdString()) {
assert(ripup);
assert(conflicting_net != net_name);
- ripup_net(design, conflicting_net);
+ ripup_net(ctx, conflicting_net);
rippedNets.insert(conflicting_net);
}
- conflicting_net = chip.getPipNet(visited[cursor].pip, true);
+ conflicting_net = ctx->getPipNet(visited[cursor].pip, true);
if (conflicting_net != IdString()) {
assert(ripup);
assert(conflicting_net != net_name);
- ripup_net(design, conflicting_net);
+ ripup_net(ctx, conflicting_net);
rippedNets.insert(conflicting_net);
}
net_info->wires[cursor] = visited[cursor].pip;
- chip.bindWire(cursor, net_name);
- chip.bindPip(visited[cursor].pip, net_name);
+ ctx->bindWire(cursor, net_name);
+ ctx->bindPip(visited[cursor].pip, net_name);
- src_wires[cursor] = chip.getPipDelay(visited[cursor].pip);
- cursor = chip.getPipSrcWire(visited[cursor].pip);
+ src_wires[cursor] = ctx->getPipDelay(visited[cursor].pip);
+ cursor = ctx->getPipSrcWire(visited[cursor].pip);
}
}
@@ -291,16 +289,15 @@ struct Router
NEXTPNR_NAMESPACE_BEGIN
-bool route_design(Design *design, bool verbose)
+bool route_design(Context *ctx, bool verbose)
{
- auto &chip = design->chip;
delay_t ripup_penalty = 5;
log_info("Routing..\n");
std::unordered_set<IdString> netsQueue;
- for (auto &net_it : design->nets) {
+ for (auto &net_it : ctx->nets) {
auto net_name = net_it.first;
auto net_info = net_it.second;
@@ -325,7 +322,7 @@ bool route_design(Design *design, bool verbose)
int estimatedTotalDelayCnt = 0;
for (auto net_name : netsQueue) {
- auto net_info = design->nets.at(net_name);
+ auto net_info = ctx->nets.at(net_name);
auto src_bel = net_info->driver.cell->bel;
@@ -338,7 +335,7 @@ bool route_design(Design *design, bool verbose)
if (driver_port_it != net_info->driver.cell->pins.end())
driver_port = driver_port_it->second;
- auto src_wire = chip.getWireBelPin(src_bel, portPinFromId(driver_port));
+ auto src_wire = ctx->getWireBelPin(src_bel, portPinFromId(driver_port));
if (src_wire == WireId())
continue;
@@ -357,12 +354,12 @@ bool route_design(Design *design, bool verbose)
user_port = user_port_it->second;
auto dst_wire =
- chip.getWireBelPin(dst_bel, portPinFromId(user_port));
+ ctx->getWireBelPin(dst_bel, portPinFromId(user_port));
if (dst_wire == WireId())
continue;
- estimatedTotalDelay += chip.estimateDelay(src_wire, dst_wire);
+ estimatedTotalDelay += ctx->estimateDelay(src_wire, dst_wire);
estimatedTotalDelayCnt++;
}
}
@@ -390,9 +387,9 @@ bool route_design(Design *design, bool verbose)
for (auto net_name : netsQueue) {
if (printNets)
log_info(" routing net %s. (%d users)\n", net_name.c_str(),
- int(design->nets.at(net_name)->users.size()));
+ int(ctx->nets.at(net_name)->users.size()));
- Router router(design, net_name, verbose, false);
+ Router router(ctx, net_name, verbose, false);
netCnt++;
visitCnt += router.visitCnt;
@@ -401,7 +398,7 @@ bool route_design(Design *design, bool verbose)
if (!router.routedOkay) {
if (printNets)
log_info(" failed to route to %s.\n",
- chip.getWireName(router.failedDest).c_str());
+ ctx->getWireName(router.failedDest).c_str());
ripupQueue.insert(net_name);
}
@@ -433,9 +430,9 @@ bool route_design(Design *design, bool verbose)
for (auto net_name : ripupQueue) {
if (printNets)
log_info(" routing net %s. (%d users)\n", net_name.c_str(),
- int(design->nets.at(net_name)->users.size()));
+ int(ctx->nets.at(net_name)->users.size()));
- Router router(design, net_name, verbose, true,
+ Router router(ctx, net_name, verbose, true,
ripup_penalty * (iterCnt - 1));
netCnt++;
@@ -455,7 +452,7 @@ bool route_design(Design *design, bool verbose)
int(router.rippedNets.size()));
for (auto n : router.rippedNets)
log_info(" %s (%d users)\n", n.c_str(),
- int(design->nets.at(n)->users.size()));
+ int(ctx->nets.at(n)->users.size()));
} else {
log_info(" ripped up %d other nets.\n",
int(router.rippedNets.size()));
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-17 12:58:37 +0000