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Add Router1Cfg

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Signed-off-by: Clifford Wolf <clifford@clifford.at>
This commit is contained in:
Clifford Wolf 2018-08-02 13:58:23 +02:00
parent 94abe914fc
commit 6ccf8629b5
5 changed files with 50 additions and 26 deletions
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53
common/router1.cc
View File

@ -105,6 +105,7 @@ void ripup_net(Context *ctx, IdString net_name)
struct Router struct Router
{ {
Context *ctx; Context *ctx;
const Router1Cfg &cfg;
RipupScoreboard scores; RipupScoreboard scores;
IdString net_name; IdString net_name;
@ -226,9 +227,9 @@ struct Router
visitCnt += thisVisitCnt; visitCnt += thisVisitCnt;
} }
Router(Context *ctx, RipupScoreboard &scores, WireId src_wire, WireId dst_wire, bool ripup = false, Router(Context *ctx, const Router1Cfg &cfg, RipupScoreboard &scores, WireId src_wire, WireId dst_wire,
delay_t ripup_penalty = 0) bool ripup = false, delay_t ripup_penalty = 0)
: ctx(ctx), scores(scores), ripup(ripup), ripup_penalty(ripup_penalty) : ctx(ctx), cfg(cfg), scores(scores), ripup(ripup), ripup_penalty(ripup_penalty)
{ {
std::unordered_map<WireId, delay_t> src_wires; std::unordered_map<WireId, delay_t> src_wires;
src_wires[src_wire] = ctx->getWireDelay(src_wire).maxDelay(); src_wires[src_wire] = ctx->getWireDelay(src_wire).maxDelay();
@ -251,9 +252,9 @@ struct Router
} }
} }
Router(Context *ctx, RipupScoreboard &scores, IdString net_name, int user_idx = -1, bool reroute = false, Router(Context *ctx, const Router1Cfg &cfg, RipupScoreboard &scores, IdString net_name, int user_idx = -1,
bool ripup = false, delay_t ripup_penalty = 0) bool reroute = false, bool ripup = false, delay_t ripup_penalty = 0)
: ctx(ctx), scores(scores), net_name(net_name), ripup(ripup), ripup_penalty(ripup_penalty) : ctx(ctx), cfg(cfg), scores(scores), net_name(net_name), ripup(ripup), ripup_penalty(ripup_penalty)
{ {
auto net_info = ctx->nets.at(net_name).get(); auto net_info = ctx->nets.at(net_name).get();
@ -455,7 +456,8 @@ struct RouteJob
}; };
}; };
void addFullNetRouteJob(Context *ctx, IdString net_name, std::unordered_map<IdString, std::vector<bool>> &cache, void addFullNetRouteJob(Context *ctx, const Router1Cfg &cfg,
IdString net_name, std::unordered_map<IdString, std::vector<bool>> &cache,
std::priority_queue<RouteJob, std::vector<RouteJob>, RouteJob::Greater> &queue) std::priority_queue<RouteJob, std::vector<RouteJob>, RouteJob::Greater> &queue)
{ {
NetInfo *net_info = ctx->nets.at(net_name).get(); NetInfo *net_info = ctx->nets.at(net_name).get();
@ -520,7 +522,8 @@ void addFullNetRouteJob(Context *ctx, IdString net_name, std::unordered_map<IdSt
net_cache[user_idx] = true; net_cache[user_idx] = true;
} }
void addNetRouteJobs(Context *ctx, IdString net_name, std::unordered_map<IdString, std::vector<bool>> &cache, void addNetRouteJobs(Context *ctx, const Router1Cfg &cfg,
IdString net_name, std::unordered_map<IdString, std::vector<bool>> &cache,
std::priority_queue<RouteJob, std::vector<RouteJob>, RouteJob::Greater> &queue) std::priority_queue<RouteJob, std::vector<RouteJob>, RouteJob::Greater> &queue)
{ {
NetInfo *net_info = ctx->nets.at(net_name).get(); NetInfo *net_info = ctx->nets.at(net_name).get();
@ -568,7 +571,8 @@ void addNetRouteJobs(Context *ctx, IdString net_name, std::unordered_map<IdStrin
} }
} }
void cleanupReroute(Context *ctx, RipupScoreboard &scores, std::unordered_set<IdString> &cleanupQueue, void cleanupReroute(Context *ctx, const Router1Cfg &cfg,
RipupScoreboard &scores, std::unordered_set<IdString> &cleanupQueue,
std::priority_queue<RouteJob, std::vector<RouteJob>, RouteJob::Greater> &jobQueue, std::priority_queue<RouteJob, std::vector<RouteJob>, RouteJob::Greater> &jobQueue,
int &totalVisitCnt, int &totalRevisitCnt, int &totalOvertimeRevisitCnt) int &totalVisitCnt, int &totalRevisitCnt, int &totalOvertimeRevisitCnt)
{ {
@ -635,7 +639,7 @@ void cleanupReroute(Context *ctx, RipupScoreboard &scores, std::unordered_set<Id
ctx->unbindWire(dst_wire); ctx->unbindWire(dst_wire);
Router router(ctx, scores, net_name, user_idx, false, false); Router router(ctx, cfg, scores, net_name, user_idx, false, false);
if (!router.routedOkay) if (!router.routedOkay)
log_error("Failed to re-route arc %d of net %s.\n", user_idx, net_name.c_str(ctx)); log_error("Failed to re-route arc %d of net %s.\n", user_idx, net_name.c_str(ctx));
@ -669,7 +673,7 @@ void cleanupReroute(Context *ctx, RipupScoreboard &scores, std::unordered_set<Id
NEXTPNR_NAMESPACE_BEGIN NEXTPNR_NAMESPACE_BEGIN
bool router1(Context *ctx) bool router1(Context *ctx, const Router1Cfg &cfg)
{ {
try { try {
int totalVisitCnt = 0, totalRevisitCnt = 0, totalOvertimeRevisitCnt = 0; int totalVisitCnt = 0, totalRevisitCnt = 0, totalOvertimeRevisitCnt = 0;
@ -685,7 +689,7 @@ bool router1(Context *ctx)
std::priority_queue<RouteJob, std::vector<RouteJob>, RouteJob::Greater> jobQueue; std::priority_queue<RouteJob, std::vector<RouteJob>, RouteJob::Greater> jobQueue;
for (auto &net_it : ctx->nets) for (auto &net_it : ctx->nets)
addNetRouteJobs(ctx, net_it.first, jobCache, jobQueue); addNetRouteJobs(ctx, cfg, net_it.first, jobCache, jobQueue);
if (jobQueue.empty()) { if (jobQueue.empty()) {
log_info("found no unrouted source-sink pairs. no routing necessary.\n"); log_info("found no unrouted source-sink pairs. no routing necessary.\n");
@ -698,7 +702,7 @@ bool router1(Context *ctx)
int iterCnt = 0; int iterCnt = 0;
while (!jobQueue.empty()) { while (!jobQueue.empty()) {
if (iterCnt == 200) { if (iterCnt == cfg.maxIterCnt) {
log_warning("giving up after %d iterations.\n", iterCnt); log_warning("giving up after %d iterations.\n", iterCnt);
log_info("Checksum: 0x%08x\n", ctx->checksum()); log_info("Checksum: 0x%08x\n", ctx->checksum());
#ifndef NDEBUG #ifndef NDEBUG
@ -731,6 +735,9 @@ bool router1(Context *ctx)
auto user_idx = jobQueue.top().user_idx; auto user_idx = jobQueue.top().user_idx;
jobQueue.pop(); jobQueue.pop();
if (cfg.fullCleanupReroute)
cleanupQueue.insert(net_name);
if (printNets) { if (printNets) {
if (user_idx < 0) if (user_idx < 0)
log_info(" routing all %d users of net %s\n", int(ctx->nets.at(net_name)->users.size()), log_info(" routing all %d users of net %s\n", int(ctx->nets.at(net_name)->users.size()),
@ -739,7 +746,7 @@ bool router1(Context *ctx)
log_info(" routing user %d of net %s\n", user_idx, net_name.c_str(ctx)); log_info(" routing user %d of net %s\n", user_idx, net_name.c_str(ctx));
} }
Router router(ctx, scores, net_name, user_idx, false, false); Router router(ctx, cfg, scores, net_name, user_idx, false, false);
jobCnt++; jobCnt++;
visitCnt += router.visitCnt; visitCnt += router.visitCnt;
@ -790,13 +797,14 @@ bool router1(Context *ctx)
ctx->sorted_shuffle(ripupArray); ctx->sorted_shuffle(ripupArray);
for (auto net_name : ripupArray) { for (auto net_name : ripupArray) {
cleanupQueue.insert(net_name); if (cfg.cleanupReroute)
cleanupQueue.insert(net_name);
if (printNets) if (printNets)
log_info(" routing net %s. (%d users)\n", net_name.c_str(ctx), log_info(" routing net %s. (%d users)\n", net_name.c_str(ctx),
int(ctx->nets.at(net_name)->users.size())); int(ctx->nets.at(net_name)->users.size()));
Router router(ctx, scores, net_name, -1, false, true, ripup_penalty); Router router(ctx, cfg, scores, net_name, -1, false, true, ripup_penalty);
netCnt++; netCnt++;
visitCnt += router.visitCnt; visitCnt += router.visitCnt;
@ -807,8 +815,9 @@ bool router1(Context *ctx)
log_error("Net %s is impossible to route.\n", net_name.c_str(ctx)); log_error("Net %s is impossible to route.\n", net_name.c_str(ctx));
for (auto it : router.rippedNets) { for (auto it : router.rippedNets) {
addFullNetRouteJob(ctx, it, jobCache, jobQueue); addFullNetRouteJob(ctx, cfg, it, jobCache, jobQueue);
cleanupQueue.insert(it); if (cfg.cleanupReroute)
cleanupQueue.insert(it);
} }
if (printNets) { if (printNets) {
@ -852,8 +861,8 @@ bool router1(Context *ctx)
if (iterCnt == 8 || iterCnt == 16 || iterCnt == 32 || iterCnt == 64 || iterCnt == 128) if (iterCnt == 8 || iterCnt == 16 || iterCnt == 32 || iterCnt == 64 || iterCnt == 128)
ripup_penalty += ctx->getRipupDelayPenalty(); ripup_penalty += ctx->getRipupDelayPenalty();
if (jobQueue.empty() || (iterCnt % 5) == 4) if (jobQueue.empty() || (iterCnt % 5) == 4 || (cfg.fullCleanupReroute && iterCnt == 1))
cleanupReroute(ctx, scores, cleanupQueue, jobQueue, totalVisitCnt, totalRevisitCnt, totalOvertimeRevisitCnt); cleanupReroute(ctx, cfg, scores, cleanupQueue, jobQueue, totalVisitCnt, totalRevisitCnt, totalOvertimeRevisitCnt);
ctx->yield(); ctx->yield();
} }
@ -901,7 +910,7 @@ bool router1(Context *ctx)
jobCache.clear(); jobCache.clear();
for (auto &net_it : ctx->nets) for (auto &net_it : ctx->nets)
addNetRouteJobs(ctx, net_it.first, jobCache, jobQueue); addNetRouteJobs(ctx, cfg, net_it.first, jobCache, jobQueue);
#ifndef NDEBUG #ifndef NDEBUG
if (!jobQueue.empty()) { if (!jobQueue.empty()) {
@ -936,7 +945,7 @@ bool router1(Context *ctx)
bool Context::getActualRouteDelay(WireId src_wire, WireId dst_wire, delay_t &delay) bool Context::getActualRouteDelay(WireId src_wire, WireId dst_wire, delay_t &delay)
{ {
RipupScoreboard scores; RipupScoreboard scores;
Router router(this, scores, src_wire, dst_wire); Router router(this, Router1Cfg(), scores, src_wire, dst_wire);
if (router.routedOkay) if (router.routedOkay)
delay = router.visited.at(dst_wire).delay; delay = router.visited.at(dst_wire).delay;
return router.routedOkay; return router.routedOkay;

9
common/router1.h
View File

@ -24,7 +24,14 @@
NEXTPNR_NAMESPACE_BEGIN NEXTPNR_NAMESPACE_BEGIN
extern bool router1(Context *ctx); struct Router1Cfg
{
int maxIterCnt = 200;
bool cleanupReroute = true;
bool fullCleanupReroute = true;
};
extern bool router1(Context *ctx, const Router1Cfg &cfg);
NEXTPNR_NAMESPACE_END NEXTPNR_NAMESPACE_END

6
ecp5/arch.cc
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@ -428,7 +428,11 @@ delay_t Arch::getBudgetOverride(const NetInfo *net_info, const PortRef &sink, de
bool Arch::place() { return placer1(getCtx()); } bool Arch::place() { return placer1(getCtx()); }
bool Arch::route() { return router1(getCtx()); } bool Arch::route()
{
Router1Cfg cfg;
return router1(getCtx(), cfg);
}
// ----------------------------------------------------------------------- // -----------------------------------------------------------------------

2
generic/arch.cc
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@ -420,7 +420,7 @@ delay_t getBudgetOverride(const NetInfo *net_info, const PortRef &sink, delay_t
bool Arch::place() { return placer1(getCtx()); } bool Arch::place() { return placer1(getCtx()); }
bool Arch::route() { return router1(getCtx()); } bool Arch::route() { return router1(getCtx(), Router1Cfg()); }
// --------------------------------------------------------------- // ---------------------------------------------------------------

6
ice40/arch.cc
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@ -661,7 +661,11 @@ delay_t Arch::getBudgetOverride(const NetInfo *net_info, const PortRef &sink, de
bool Arch::place() { return placer1(getCtx()); } bool Arch::place() { return placer1(getCtx()); }
bool Arch::route() { return router1(getCtx()); } bool Arch::route()
{
Router1Cfg cfg;
return router1(getCtx(), cfg);
}
// ----------------------------------------------------------------------- // -----------------------------------------------------------------------