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nextpnr/gowin/cells.cc
YRabbit fddacb3dc1 gowin: implement IDES16 and OSER16 primitives 
These are very cumbersome primitives that take up two cells and
consequently 4 IOLOGIC bels.
The primitives are implemented for the chips that contain them and are
supported by apicula GW1NSR-4C, GW1NR-9 and GW1NR-9C.

Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
2023-04-12 14:35:17 +02:00

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11 KiB
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/*
* nextpnr -- Next Generation Place and Route
*
* Copyright (C) 2019 gatecat <gatecat@ds0.me>
* Copyright (C) 2020 Pepijn de Vos <pepijn@symbioticeda.com>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
*/
#include "cells.h"
#include <iostream>
#include "design_utils.h"
#include "log.h"
#include "util.h"
NEXTPNR_NAMESPACE_BEGIN
std::unique_ptr<CellInfo> create_generic_cell(Context *ctx, IdString type, std::string name)
{
static int auto_idx = 0;
IdString name_id =
name.empty() ? ctx->id("$nextpnr_" + type.str(ctx) + "_" + std::to_string(auto_idx++)) : ctx->id(name);
auto new_cell = std::make_unique<CellInfo>(ctx, name_id, type);
if (type == id_SLICE) {
new_cell->params[id_INIT] = 0;
new_cell->params[id_FF_USED] = 0;
new_cell->params[id_FF_TYPE] = id_DFF.str(ctx);
IdString names[4] = {id_A, id_B, id_C, id_D};
for (int i = 0; i < 4; i++) {
new_cell->addInput(names[i]);
}
new_cell->addInput(id_CLK);
new_cell->addOutput(id_F);
new_cell->addOutput(id_Q);
new_cell->addInput(id_CE);
new_cell->addInput(id_LSR);
} else if (type == id_RAMW) {
IdString names[8] = {id_A4, id_B4, id_C4, id_D4, id_A5, id_B5, id_C5, id_D5};
for (int i = 0; i < 8; i++) {
new_cell->addInput(names[i]);
}
new_cell->addInput(id_CLK);
new_cell->addInput(id_CE);
new_cell->addInput(id_LSR);
} else if (type.in(id_MUX2_LUT5, id_MUX2_LUT6, id_MUX2_LUT7, id_MUX2_LUT7, id_MUX2_LUT8)) {
new_cell->addInput(id_I0);
new_cell->addInput(id_I1);
new_cell->addInput(id_SEL);
new_cell->addOutput(id_OF);
} else if (type.in(id_IOB, id_IOBS)) {
new_cell->params[id_INPUT_USED] = 0;
new_cell->params[id_OUTPUT_USED] = 0;
new_cell->params[id_ENABLE_USED] = 0;
new_cell->addInout(id_PAD);
new_cell->addInput(id_I);
new_cell->addInput(id_OEN);
new_cell->addOutput(id_O);
} else if (type == id_GSR) {
new_cell->addInput(id_GSRI);
} else if (type == id_GND) {
new_cell->addOutput(id_G);
} else if (type == id_VCC) {
new_cell->addOutput(id_V);
} else if (type == id_BUFS) {
new_cell->addInput(id_I);
new_cell->addOutput(id_O);
} else if (type == id_rPLL) {
for (IdString iid :
{id_CLKIN, id_CLKFB, id_FBDSEL0, id_FBDSEL1, id_FBDSEL2, id_FBDSEL3, id_FBDSEL4, id_FBDSEL5, id_IDSEL0,
id_IDSEL1, id_IDSEL2, id_IDSEL3, id_IDSEL4, id_IDSEL5, id_ODSEL0, id_ODSEL1, id_ODSEL2, id_ODSEL3,
id_ODSEL4, id_ODSEL5, id_PSDA0, id_PSDA1, id_PSDA2, id_PSDA3, id_DUTYDA0, id_DUTYDA1, id_DUTYDA2,
id_DUTYDA3, id_FDLY0, id_FDLY1, id_FDLY2, id_FDLY3, id_RESET, id_RESET_P}) {
new_cell->addInput(iid);
}
new_cell->addOutput(id_CLKOUT);
new_cell->addOutput(id_CLKOUTP);
new_cell->addOutput(id_CLKOUTD);
new_cell->addOutput(id_CLKOUTD3);
new_cell->addOutput(id_LOCK);
} else if (type == id_PLLVR) {
for (IdString iid :
{id_CLKIN, id_CLKFB, id_FBDSEL0, id_FBDSEL1, id_FBDSEL2, id_FBDSEL3, id_FBDSEL4, id_FBDSEL5, id_IDSEL0,
id_IDSEL1, id_IDSEL2, id_IDSEL3, id_IDSEL4, id_IDSEL5, id_ODSEL0, id_ODSEL1, id_ODSEL2, id_ODSEL3,
id_ODSEL4, id_ODSEL5, id_PSDA0, id_PSDA1, id_PSDA2, id_PSDA3, id_DUTYDA0, id_DUTYDA1, id_DUTYDA2,
id_DUTYDA3, id_FDLY0, id_FDLY1, id_FDLY2, id_FDLY3, id_RESET, id_RESET_P, id_VREN}) {
new_cell->addInput(iid);
}
new_cell->addOutput(id_CLKOUT);
new_cell->addOutput(id_CLKOUTP);
new_cell->addOutput(id_CLKOUTD);
new_cell->addOutput(id_CLKOUTD3);
new_cell->addOutput(id_LOCK);
} else if (type == id_IOLOGIC) {
new_cell->addInput(id_FCLK);
new_cell->addInput(id_PCLK);
new_cell->addInput(id_RESET);
} else if (type == id_DUMMY_CELL) {
} else {
log_error("unable to create generic cell of type %s\n", type.c_str(ctx));
}
return new_cell;
}
void lut_to_lc(const Context *ctx, CellInfo *lut, CellInfo *lc, bool no_dff)
{
lc->params[id_INIT] = lut->params[id_INIT];
lc->cluster = lut->cluster;
lc->constr_x = lut->constr_x;
lc->constr_y = lut->constr_y;
lc->constr_z = lut->constr_z;
// add itself to the cluster root children list
if (lc->cluster != ClusterId()) {
CellInfo *cluster_root = ctx->cells.at(lc->cluster).get();
lc->constr_x += cluster_root->constr_x;
lc->constr_y += cluster_root->constr_y;
lc->constr_z += cluster_root->constr_z;
if (cluster_root->cluster != cluster_root->name) {
lc->cluster = cluster_root->cluster;
cluster_root = ctx->cells.at(cluster_root->cluster).get();
}
cluster_root->constr_children.push_back(lc);
}
IdString sim_names[4] = {id_I0, id_I1, id_I2, id_I3};
IdString wire_names[4] = {id_A, id_B, id_C, id_D};
for (int i = 0; i < 4; i++) {
lut->movePortTo(sim_names[i], lc, wire_names[i]);
}
if (no_dff) {
lc->params[id_FF_USED] = 0;
lut->movePortTo(id_F, lc, id_F);
}
}
void dff_to_lc(const Context *ctx, CellInfo *dff, CellInfo *lc, bool pass_thru_lut)
{
lc->params[id_FF_USED] = 1;
lc->params[id_FF_TYPE] = dff->type.str(ctx);
dff->movePortTo(id_CLK, lc, id_CLK);
dff->movePortTo(id_CE, lc, id_CE);
dff->movePortTo(id_SET, lc, id_LSR);
dff->movePortTo(id_RESET, lc, id_LSR);
dff->movePortTo(id_CLEAR, lc, id_LSR);
dff->movePortTo(id_PRESET, lc, id_LSR);
if (pass_thru_lut) {
// Fill LUT with alternating 10
const int init_size = 1 << 4;
std::string init;
init.reserve(init_size);
for (int i = 0; i < init_size; i += 2)
init.append("10");
lc->params[id_INIT] = Property::from_string(init);
dff->movePortTo(id_D, lc, id_A);
}
dff->movePortTo(id_Q, lc, id_Q);
}
void gwio_to_iob(Context *ctx, CellInfo *nxio, CellInfo *iob, pool<IdString> &todelete_cells)
{
if (nxio->type == id_IBUF) {
if (iob->type == id_IOBS) {
// VCC -> OEN
iob->connectPort(id_OEN, ctx->nets[ctx->id("$PACKER_VCC_NET")].get());
}
iob->params[id_INPUT_USED] = 1;
nxio->movePortTo(id_O, iob, id_O);
} else if (nxio->type == id_OBUF) {
if (iob->type == id_IOBS) {
// VSS -> OEN
iob->connectPort(id_OEN, ctx->nets[ctx->id("$PACKER_GND_NET")].get());
}
iob->params[id_OUTPUT_USED] = 1;
nxio->movePortTo(id_I, iob, id_I);
} else if (nxio->type == id_TBUF) {
iob->params[id_ENABLE_USED] = 1;
iob->params[id_OUTPUT_USED] = 1;
nxio->movePortTo(id_I, iob, id_I);
nxio->movePortTo(id_OEN, iob, id_OEN);
} else if (nxio->type == id_IOBUF) {
iob->params[id_ENABLE_USED] = 1;
iob->params[id_INPUT_USED] = 1;
iob->params[id_OUTPUT_USED] = 1;
nxio->movePortTo(id_I, iob, id_I);
nxio->movePortTo(id_O, iob, id_O);
nxio->movePortTo(id_OEN, iob, id_OEN);
} else {
NPNR_ASSERT(false);
}
}
void reconnect_pllvr(Context *ctx, CellInfo *pll, CellInfo *new_pll)
{
pll->movePortTo(id_CLKIN, new_pll, id_CLKIN);
pll->movePortTo(id_VREN, new_pll, id_VREN);
pll->movePortTo(id_CLKFB, new_pll, id_CLKFB);
pll->movePortTo(id_RESET, new_pll, id_RESET);
pll->movePortTo(id_RESET_P, new_pll, id_RESET_P);
for (int i = 0; i < 6; ++i) {
pll->movePortTo(ctx->idf("FBDSEL[%d]", i), new_pll, ctx->idf("FBDSEL%d", i));
pll->movePortTo(ctx->idf("IDSEL[%d]", i), new_pll, ctx->idf("IDSEL%d", i));
pll->movePortTo(ctx->idf("ODSEL[%d]", i), new_pll, ctx->idf("ODSEL%d", i));
if (i < 4) {
pll->movePortTo(ctx->idf("PSDA[%d]", i), new_pll, ctx->idf("PSDA%d", i));
pll->movePortTo(ctx->idf("DUTYDA[%d]", i), new_pll, ctx->idf("DUTYDA%d", i));
pll->movePortTo(ctx->idf("FDLY[%d]", i), new_pll, ctx->idf("FDLY%d", i));
}
}
pll->movePortTo(id_CLKOUT, new_pll, id_CLKOUT);
pll->movePortTo(id_CLKOUTP, new_pll, id_CLKOUTP);
pll->movePortTo(id_CLKOUTD, new_pll, id_CLKOUTD);
pll->movePortTo(id_CLKOUTD3, new_pll, id_CLKOUTD3);
pll->movePortTo(id_LOCK, new_pll, id_LOCK);
}
void reconnect_rpll(Context *ctx, CellInfo *pll, CellInfo *new_pll)
{
pll->movePortTo(id_CLKIN, new_pll, id_CLKIN);
pll->movePortTo(id_CLKFB, new_pll, id_CLKFB);
pll->movePortTo(id_RESET, new_pll, id_RESET);
pll->movePortTo(id_RESET_P, new_pll, id_RESET_P);
for (int i = 0; i < 6; ++i) {
pll->movePortTo(ctx->idf("FBDSEL[%d]", i), new_pll, ctx->idf("FBDSEL%d", i));
pll->movePortTo(ctx->idf("IDSEL[%d]", i), new_pll, ctx->idf("IDSEL%d", i));
pll->movePortTo(ctx->idf("ODSEL[%d]", i), new_pll, ctx->idf("ODSEL%d", i));
if (i < 4) {
pll->movePortTo(ctx->idf("PSDA[%d]", i), new_pll, ctx->idf("PSDA%d", i));
pll->movePortTo(ctx->idf("DUTYDA[%d]", i), new_pll, ctx->idf("DUTYDA%d", i));
pll->movePortTo(ctx->idf("FDLY[%d]", i), new_pll, ctx->idf("FDLY%d", i));
}
}
pll->movePortTo(id_CLKOUT, new_pll, id_CLKOUT);
pll->movePortTo(id_CLKOUTP, new_pll, id_CLKOUTP);
pll->movePortTo(id_CLKOUTD, new_pll, id_CLKOUTD);
pll->movePortTo(id_CLKOUTD3, new_pll, id_CLKOUTD3);
pll->movePortTo(id_LOCK, new_pll, id_LOCK);
}
void sram_to_ramw_split(Context *ctx, CellInfo *ram, CellInfo *ramw)
{
if (ramw->hierpath == IdString())
ramw->hierpath = ramw->hierpath;
ram->movePortTo(ctx->id("WAD[0]"), ramw, id_A4);
ram->movePortTo(ctx->id("WAD[1]"), ramw, id_B4);
ram->movePortTo(ctx->id("WAD[2]"), ramw, id_C4);
ram->movePortTo(ctx->id("WAD[3]"), ramw, id_D4);
ram->movePortTo(ctx->id("DI[0]"), ramw, id_A5);
ram->movePortTo(ctx->id("DI[1]"), ramw, id_B5);
ram->movePortTo(ctx->id("DI[2]"), ramw, id_C5);
ram->movePortTo(ctx->id("DI[3]"), ramw, id_D5);
ram->movePortTo(ctx->id("CLK"), ramw, id_CLK);
ram->movePortTo(ctx->id("WRE"), ramw, id_LSR);
}
void sram_to_slice(Context *ctx, CellInfo *ram, CellInfo *slice, int index)
{
if (slice->hierpath == IdString())
slice->hierpath = slice->hierpath;
slice->params[id_INIT] = ram->params[ctx->idf("INIT_%d", index)];
ram->movePortTo(ctx->idf("DO[%d]", index), slice, id_F);
ram->copyPortTo(ctx->id("RAD[0]"), slice, id_A);
ram->copyPortTo(ctx->id("RAD[1]"), slice, id_B);
ram->copyPortTo(ctx->id("RAD[2]"), slice, id_C);
ram->copyPortTo(ctx->id("RAD[3]"), slice, id_D);
}
NEXTPNR_NAMESPACE_END
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