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This commit is contained in:
Lofty 2025-07-20 15:07:12 +01:00
parent 0829b46e9b
commit 530a08606b
1 changed files with 87 additions and 68 deletions
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155
himbaechel/uarch/gatemate/route_mult.cc
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@ -18,6 +18,8 @@
*/
#include "gatemate.h"
#include "log.h"
#include "nextpnr_base_types.h"
#include "nextpnr_namespaces.h"
#define HIMBAECHEL_CONSTIDS "uarch/gatemate/constids.inc"
@ -39,23 +41,34 @@ void GateMateImpl::route_mult() {
auto *upper_out = upper->ports.at(id_OUT).net;
auto loc = ctx->getBelLocation(lower->bel);
log_info(" A passthrough at (%d, %d) has 4-group (%d, %d)\n", loc.x, loc.y, (loc.x - 3) % 4, (loc.y - 3) % 4);
log_info(" lower.OUT [OUT1] = %s\n", ctx->nameOfWire(ctx->getBelPinWire(lower->bel, id_OUT)));
log_info(" upper.OUT [OUT2] = %s\n", ctx->nameOfWire(ctx->getBelPinWire(upper->bel, id_OUT)));
auto x_fourgroup = (loc.x - 3) % 4;
auto y_fourgroup = (loc.y - 3) % 4;
bool is_fourgroup_a = (x_fourgroup == 0 && y_fourgroup == 0) || (x_fourgroup == 2 && y_fourgroup == 2);
bool is_fourgroup_b = (x_fourgroup == 2 && y_fourgroup == 0) || (x_fourgroup == 0 && y_fourgroup == 2);
bool is_fourgroup_a = (x_fourgroup < 2 && y_fourgroup < 2) || (x_fourgroup >= 2 && y_fourgroup >= 2);
auto x_within_fourgroup = (loc.x - 3) % 2;
auto y_within_fourgroup = (loc.y - 3) % 2;
bool needs_in8_route = false;
log_info(" A passthrough at (%d, %d) has 4-group %c\n", loc.x, loc.y, is_fourgroup_a ? 'A' : 'B');
log_info(" lower.OUT [OUT1] = %s\n", ctx->nameOfWire(ctx->getBelPinWire(lower->bel, id_OUT)));
for (auto sink_port : lower->ports.at(id_OUT).net->users)
log_info(" -> %s.%s\n", sink_port.cell->name.c_str(ctx), sink_port.port.c_str(ctx));
log_info(" upper.OUT [OUT2] = %s\n", ctx->nameOfWire(ctx->getBelPinWire(upper->bel, id_OUT)));
for (auto sink_port : upper->ports.at(id_OUT).net->users) {
if (sink_port.port == id_IN8)
needs_in8_route = true;
log_info(" -> %s.%s\n", sink_port.cell->name.c_str(ctx), sink_port.port.c_str(ctx));
}
auto find_downhill_pip = [&](WireId from, WireId to) {
NPNR_ASSERT(from != WireId());
NPNR_ASSERT(to != WireId());
for (auto pip : ctx->getPipsDownhill(from)) {
if (ctx->getPipDstWire(pip) == to) {
log_info(" pip %s\n", ctx->nameOfPip(pip));
log_info(" pip %s: %s -> %s\n", ctx->nameOfPip(pip), ctx->nameOfWire(from), ctx->nameOfWire(to));
return pip;
}
@ -64,73 +77,79 @@ void GateMateImpl::route_mult() {
};
if (is_fourgroup_a) {
auto x1y1 = ctx->idf("X%dY%d", loc.x, loc.y);
auto x2y1 = ctx->idf("X%dY%d", loc.x + 1, loc.y);
auto x2y2 = ctx->idf("X%dY%d", loc.x + 1, loc.y + 1);
auto x4y2 = ctx->idf("X%dY%d", loc.x + 3, loc.y + 1);
if (x_within_fourgroup == 0 && y_within_fourgroup == 0) {
auto x1y1 = ctx->idf("X%dY%d", loc.x, loc.y);
auto x2y1 = ctx->idf("X%dY%d", loc.x + 1, loc.y);
auto x2y2 = ctx->idf("X%dY%d", loc.x + 1, loc.y + 1);
auto x4y2 = ctx->idf("X%dY%d", loc.x + 3, loc.y + 1);
{
log_info(" routing net '%s' -> IN5\n", lower_out->name.c_str(ctx));
auto cpe_combout1 = ctx->getBelPinWire(lower->bel, id_OUT);
auto cpe_out1 = ctx->getWireByName(IdStringList::concat(x1y1, ctx->idf("CPE.OUT1_int")));
auto sb_big = ctx->getWireByName(IdStringList::concat(x1y1, ctx->idf("SB_BIG.P05.D0")));
auto in_mux = ctx->getWireByName(IdStringList::concat(x2y1, ctx->idf("IM.P05.D0")));
auto cpe_in5 = ctx->getWireByName(IdStringList::concat(x2y1, ctx->idf("CPE.IN5")));
auto cpe_in5_int = ctx->getWireByName(IdStringList::concat(x2y1, ctx->idf("CPE.IN5_int")));
{
log_info(" routing net '%s' -> IN5\n", lower_out->name.c_str(ctx));
auto cpe_combout1 = ctx->getBelPinWire(lower->bel, id_OUT);
auto cpe_out1 = ctx->getWireByName(IdStringList::concat(x1y1, ctx->idf("CPE.OUT1_int")));
auto sb_big = ctx->getWireByName(IdStringList::concat(x1y1, ctx->idf("SB_BIG.P05.D0")));
auto in_mux = ctx->getWireByName(IdStringList::concat(x2y1, ctx->idf("IM.P05.D0")));
auto cpe_in5 = ctx->getWireByName(IdStringList::concat(x2y1, ctx->idf("CPE.IN5")));
auto cpe_in5_int = ctx->getWireByName(IdStringList::concat(x2y1, ctx->idf("CPE.IN5_int")));
ctx->bindPip(find_downhill_pip(cpe_combout1, cpe_out1), lower_out, STRENGTH_USER);
ctx->bindPip(find_downhill_pip(cpe_out1, sb_big), lower_out, STRENGTH_USER);
ctx->bindPip(find_downhill_pip(sb_big, in_mux), lower_out, STRENGTH_USER); // inverting
ctx->bindPip(find_downhill_pip(in_mux, cpe_in5), lower_out, STRENGTH_USER); // inverting
ctx->bindPip(find_downhill_pip(cpe_in5, cpe_in5_int), lower_out, STRENGTH_USER);
ctx->bindWire(cpe_combout1, lower_out, STRENGTH_USER);
ctx->bindPip(find_downhill_pip(cpe_combout1, cpe_out1), lower_out, STRENGTH_USER);
ctx->bindPip(find_downhill_pip(cpe_out1, sb_big), lower_out, STRENGTH_USER);
ctx->bindPip(find_downhill_pip(sb_big, in_mux), lower_out, STRENGTH_USER); // inverting
ctx->bindPip(find_downhill_pip(in_mux, cpe_in5), lower_out, STRENGTH_USER); // inverting
ctx->bindPip(find_downhill_pip(cpe_in5, cpe_in5_int), lower_out, STRENGTH_USER);
}
{
log_info(" routing net '%s' -> IN1\n", upper_out->name.c_str(ctx));
auto cpe_combout2 = ctx->getBelPinWire(upper->bel, id_OUT);
auto cpe_out2_int = ctx->getWireByName(IdStringList::concat(x1y1, ctx->idf("CPE.OUT2_int")));
auto sb_big = ctx->getWireByName(IdStringList::concat(x1y1, ctx->idf("SB_BIG.P01.D0")));
auto in_mux = ctx->getWireByName(IdStringList::concat(x2y1, ctx->idf("IM.P01.D0")));
auto cpe_in1 = ctx->getWireByName(IdStringList::concat(x2y1, ctx->idf("CPE.IN1")));
auto cpe_in1_int = ctx->getWireByName(IdStringList::concat(x2y1, ctx->idf("CPE.IN1_int")));
ctx->bindWire(cpe_combout2, upper_out, STRENGTH_USER);
ctx->bindPip(find_downhill_pip(cpe_combout2, cpe_out2_int), upper_out, STRENGTH_USER);
ctx->bindPip(find_downhill_pip(cpe_out2_int, sb_big), upper_out, STRENGTH_USER);
ctx->bindPip(find_downhill_pip(sb_big, in_mux), upper_out, STRENGTH_USER); // inverting
ctx->bindPip(find_downhill_pip(in_mux, cpe_in1), upper_out, STRENGTH_USER); // inverting
ctx->bindPip(find_downhill_pip(cpe_in1, cpe_in1_int), upper_out, STRENGTH_USER);
}
if (needs_in8_route) {
log_info(" routing net '%s' -> IN8\n", upper_out->name.c_str(ctx));
auto out_mux_d0 = ctx->getWireByName(IdStringList::concat(x2y2, ctx->idf("OM.P12.D0")));
auto out_mux_y = ctx->getWireByName(IdStringList::concat(x2y2, ctx->idf("OM.P12.Y")));
auto sb_sml = ctx->getWireByName(IdStringList::concat(x2y2, ctx->idf("SB_SML.P12.Y1_int")));
auto sb_big_d2_1 = ctx->getWireByName(IdStringList::concat(x4y2, ctx->idf("SB_BIG.P12.D2_1")));
auto sb_big_y1 = ctx->getWireByName(IdStringList::concat(x4y2, ctx->idf("SB_BIG.P12.Y1")));
auto sb_big_ydiag = ctx->getWireByName(IdStringList::concat(x4y2, ctx->idf("SB_BIG.P12.YDIAG")));
auto in_mux_p12 = ctx->getWireByName(IdStringList::concat(x2y2, ctx->idf("IM.P12.D2")));
auto in_mux_p04 = ctx->getWireByName(IdStringList::concat(x2y2, ctx->idf("IM.P04.D7"))); // aka IM.P12.Y
auto in_mux_p08 = ctx->getWireByName(IdStringList::concat(x2y2, ctx->idf("IM.P08.D6"))); // aka IM.P04.Y
auto in_mux_p08_y = ctx->getWireByName(IdStringList::concat(x2y2, ctx->idf("IM.P08.Y")));
auto cpe_in8_int = ctx->getWireByName(IdStringList::concat(x2y2, ctx->idf("CPE.IN8_int")));
ctx->bindPip(find_downhill_pip(out_mux_d0, out_mux_y), upper_out, STRENGTH_USER); // inverting
ctx->bindPip(find_downhill_pip(out_mux_y, sb_sml), upper_out, STRENGTH_USER);
ctx->bindPip(find_downhill_pip(sb_sml, sb_big_d2_1), upper_out, STRENGTH_USER); // inverting
ctx->bindPip(find_downhill_pip(sb_big_d2_1, sb_big_y1), upper_out, STRENGTH_USER); // inverting
ctx->bindPip(find_downhill_pip(sb_big_y1, sb_big_ydiag), upper_out, STRENGTH_USER); // inverting
ctx->bindPip(find_downhill_pip(sb_big_ydiag, in_mux_p12), upper_out, STRENGTH_USER); // inverting
ctx->bindPip(find_downhill_pip(in_mux_p12, in_mux_p04), upper_out, STRENGTH_USER); // inverting
ctx->bindPip(find_downhill_pip(in_mux_p04, in_mux_p08), upper_out, STRENGTH_USER); // inverting
ctx->bindPip(find_downhill_pip(in_mux_p08, in_mux_p08_y), upper_out, STRENGTH_USER); // inverting
ctx->bindPip(find_downhill_pip(in_mux_p08_y, cpe_in8_int), upper_out, STRENGTH_USER);
}
} else {
log_info(" don't know how to route net '%s' (it's four-group A, (%d, %d))\n", lower_out->name.c_str(ctx), x_within_fourgroup, y_within_fourgroup);
log_info(" don't know how to route net '%s' (it's four-group A, (%d, %d))\n", upper_out->name.c_str(ctx), x_within_fourgroup, y_within_fourgroup);
}
{
log_info(" routing net '%s' -> IN1\n", upper_out->name.c_str(ctx));
auto cpe_combout2 = ctx->getBelPinWire(upper->bel, id_OUT);
auto cpe_out2_int = ctx->getWireByName(IdStringList::concat(x1y1, ctx->idf("CPE.OUT2_int")));
auto sb_big = ctx->getWireByName(IdStringList::concat(x1y1, ctx->idf("SB_BIG.P01.D0")));
auto in_mux = ctx->getWireByName(IdStringList::concat(x2y1, ctx->idf("IM.P01.D0")));
auto cpe_in1 = ctx->getWireByName(IdStringList::concat(x2y1, ctx->idf("CPE.IN1")));
auto cpe_in1_int = ctx->getWireByName(IdStringList::concat(x2y1, ctx->idf("CPE.IN1_int")));
ctx->bindPip(find_downhill_pip(cpe_combout2, cpe_out2_int), upper_out, STRENGTH_USER);
ctx->bindPip(find_downhill_pip(cpe_out2_int, sb_big), upper_out, STRENGTH_USER);
ctx->bindPip(find_downhill_pip(sb_big, in_mux), upper_out, STRENGTH_USER); // inverting
ctx->bindPip(find_downhill_pip(in_mux, cpe_in1), upper_out, STRENGTH_USER); // inverting
ctx->bindPip(find_downhill_pip(cpe_in1, cpe_in1_int), upper_out, STRENGTH_USER);
log_info(" routing net '%s' -> IN8\n", upper_out->name.c_str(ctx));
auto out_mux_d0 = ctx->getWireByName(IdStringList::concat(x2y2, ctx->idf("OM.P12.D0")));
auto out_mux_y = ctx->getWireByName(IdStringList::concat(x2y2, ctx->idf("OM.P12.Y")));
auto sb_sml = ctx->getWireByName(IdStringList::concat(x2y2, ctx->idf("SB_SML.P12.Y1_int")));
auto sb_big_d2_1 = ctx->getWireByName(IdStringList::concat(x4y2, ctx->idf("SB_BIG.P12.D2_1")));
auto sb_big_y1 = ctx->getWireByName(IdStringList::concat(x4y2, ctx->idf("SB_BIG.P12.Y1")));
auto sb_big_ydiag = ctx->getWireByName(IdStringList::concat(x4y2, ctx->idf("SB_BIG.P12.YDIAG")));
auto in_mux_p12 = ctx->getWireByName(IdStringList::concat(x2y2, ctx->idf("IM.P12.D2")));
auto in_mux_p04 = ctx->getWireByName(IdStringList::concat(x2y2, ctx->idf("IM.P04.D7"))); // aka IM.P12.Y
auto in_mux_p08 = ctx->getWireByName(IdStringList::concat(x2y2, ctx->idf("IM.P08.D6"))); // aka IM.P04.Y
auto in_mux_p08_y = ctx->getWireByName(IdStringList::concat(x2y2, ctx->idf("IM.P08.Y"))); //
auto cpe_in8_int = ctx->getWireByName(IdStringList::concat(x2y2, ctx->idf("CPE.IN8_int")));
ctx->bindPip(find_downhill_pip(out_mux_d0, out_mux_y), upper_out, STRENGTH_USER); // inverting
ctx->bindPip(find_downhill_pip(out_mux_y, sb_sml), upper_out, STRENGTH_USER);
ctx->bindPip(find_downhill_pip(sb_sml, sb_big_d2_1), upper_out, STRENGTH_USER); // inverting
ctx->bindPip(find_downhill_pip(sb_big_d2_1, sb_big_y1), upper_out, STRENGTH_USER); // inverting
ctx->bindPip(find_downhill_pip(sb_big_y1, sb_big_ydiag), upper_out, STRENGTH_USER); // inverting
ctx->bindPip(find_downhill_pip(sb_big_ydiag, in_mux_p12), upper_out, STRENGTH_USER); // inverting
ctx->bindPip(find_downhill_pip(in_mux_p12, in_mux_p04), upper_out, STRENGTH_USER); // inverting
ctx->bindPip(find_downhill_pip(in_mux_p04, in_mux_p08), upper_out, STRENGTH_USER); // inverting
ctx->bindPip(find_downhill_pip(in_mux_p08, in_mux_p08_y), upper_out, STRENGTH_USER); // inverting
ctx->bindPip(find_downhill_pip(in_mux_p08_y, cpe_in8_int), upper_out, STRENGTH_USER);
}
} else if (is_fourgroup_b) {
} else {
log_info(" don't know how to route net '%s' (it's four-group B)\n", lower_out->name.c_str(ctx));
log_info(" don't know how to route net '%s' (it's four-group B)\n", upper_out->name.c_str(ctx));
} else {
log_info(" don't know how to route net '%s' (it's a light square)\n", lower_out->name.c_str(ctx));
log_info(" don't know how to route net '%s' (it's a light square)\n", upper_out->name.c_str(ctx));
}
}
}