199 lines
7.2 KiB
C++
199 lines
7.2 KiB
C++
/*
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* nextpnr -- Next Generation Place and Route
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*
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* Copyright (C) 2018 Clifford Wolf <clifford@symbioticeda.com>
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* Copyright (C) 2018 David Shah <david@symbioticeda.com>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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*/
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#include "design_utils.h"
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#include <algorithm>
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#include <map>
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#include "log.h"
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#include "util.h"
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NEXTPNR_NAMESPACE_BEGIN
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void replace_port(CellInfo *old_cell, IdString old_name, CellInfo *rep_cell, IdString rep_name)
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{
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if (!old_cell->ports.count(old_name))
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return;
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PortInfo &old = old_cell->ports.at(old_name);
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// Create port on the replacement cell if it doesn't already exist
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if (!rep_cell->ports.count(rep_name)) {
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rep_cell->ports[rep_name].name = rep_name;
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rep_cell->ports[rep_name].type = old.type;
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}
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PortInfo &rep = rep_cell->ports.at(rep_name);
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NPNR_ASSERT(old.type == rep.type);
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rep.net = old.net;
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old.net = nullptr;
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if (rep.type == PORT_OUT) {
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if (rep.net != nullptr) {
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rep.net->driver.cell = rep_cell;
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rep.net->driver.port = rep_name;
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}
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} else if (rep.type == PORT_IN) {
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if (rep.net != nullptr) {
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for (PortRef &load : rep.net->users) {
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if (load.cell == old_cell && load.port == old_name) {
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load.cell = rep_cell;
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load.port = rep_name;
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}
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}
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}
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} else {
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NPNR_ASSERT(false);
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}
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}
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// Print utilisation of a design
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void print_utilisation(const Context *ctx)
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{
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// Sort by Bel type
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std::map<IdString, int> used_types;
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for (auto &cell : ctx->cells) {
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used_types[cell.second.get()->type]++;
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}
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std::map<IdString, int> available_types;
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for (auto bel : ctx->getBels()) {
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if (!ctx->getBelHidden(bel)) {
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available_types[ctx->getBelType(bel)]++;
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}
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}
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log_break();
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log_info("Device utilisation:\n");
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for (auto type : available_types) {
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IdString type_id = type.first;
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int used_bels = get_or_default(used_types, type.first, 0);
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log_info("\t%20s: %5d/%5d %5d%%\n", type_id.c_str(ctx), used_bels, type.second, 100 * used_bels / type.second);
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}
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log_break();
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}
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// Connect a net to a port
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void connect_port(const Context *ctx, NetInfo *net, CellInfo *cell, IdString port_name)
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{
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if (net == nullptr)
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return;
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PortInfo &port = cell->ports.at(port_name);
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NPNR_ASSERT(port.net == nullptr);
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port.net = net;
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if (port.type == PORT_OUT) {
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NPNR_ASSERT(net->driver.cell == nullptr);
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net->driver.cell = cell;
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net->driver.port = port_name;
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} else if (port.type == PORT_IN || port.type == PORT_INOUT) {
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PortRef user;
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user.cell = cell;
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user.port = port_name;
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net->users.push_back(user);
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} else {
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NPNR_ASSERT_FALSE("invalid port type for connect_port");
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}
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}
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void disconnect_port(const Context *ctx, CellInfo *cell, IdString port_name)
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{
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if (!cell->ports.count(port_name))
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return;
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PortInfo &port = cell->ports.at(port_name);
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if (port.net != nullptr) {
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port.net->users.erase(std::remove_if(port.net->users.begin(), port.net->users.end(),
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[cell, port_name](const PortRef &user) {
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return user.cell == cell && user.port == port_name;
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}),
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port.net->users.end());
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if (port.net->driver.cell == cell && port.net->driver.port == port_name)
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port.net->driver.cell = nullptr;
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port.net = nullptr;
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}
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}
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void connect_ports(Context *ctx, CellInfo *cell1, IdString port1_name, CellInfo *cell2, IdString port2_name)
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{
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PortInfo &port1 = cell1->ports.at(port1_name);
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if (port1.net == nullptr) {
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// No net on port1; need to create one
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std::unique_ptr<NetInfo> p1net(new NetInfo());
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p1net->name = ctx->id(cell1->name.str(ctx) + "$conn$" + port1_name.str(ctx));
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connect_port(ctx, p1net.get(), cell1, port1_name);
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IdString p1name = p1net->name;
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NPNR_ASSERT(!ctx->cells.count(p1name));
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ctx->nets[p1name] = std::move(p1net);
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}
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connect_port(ctx, port1.net, cell2, port2_name);
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}
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void rename_port(Context *ctx, CellInfo *cell, IdString old_name, IdString new_name)
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{
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if (!cell->ports.count(old_name))
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return;
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PortInfo pi = cell->ports.at(old_name);
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if (pi.net != nullptr) {
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if (pi.net->driver.cell == cell && pi.net->driver.port == old_name)
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pi.net->driver.port = new_name;
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for (auto &usr : pi.net->users)
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if (usr.cell == cell && usr.port == old_name)
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usr.port = new_name;
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}
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cell->ports.erase(old_name);
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pi.name = new_name;
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cell->ports[new_name] = pi;
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}
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void rename_net(Context *ctx, NetInfo *net, IdString new_name)
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{
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if (net == nullptr)
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return;
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NPNR_ASSERT(!ctx->nets.count(new_name));
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std::swap(ctx->nets[net->name], ctx->nets[new_name]);
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ctx->nets.erase(net->name);
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net->name = new_name;
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}
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void replace_bus(Context *ctx, CellInfo *old_cell, IdString old_name, int old_offset, bool old_brackets,
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CellInfo *new_cell, IdString new_name, int new_offset, bool new_brackets, int width)
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{
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for (int i = 0; i < width; i++) {
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IdString old_port = ctx->id(stringf(old_brackets ? "%s[%d]" : "%s%d", old_name.c_str(ctx), i + old_offset));
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IdString new_port = ctx->id(stringf(new_brackets ? "%s[%d]" : "%s%d", new_name.c_str(ctx), i + new_offset));
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replace_port(old_cell, old_port, new_cell, new_port);
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}
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}
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void copy_port(Context *ctx, CellInfo *old_cell, IdString old_name, CellInfo *new_cell, IdString new_name)
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{
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if (!old_cell->ports.count(old_name))
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return;
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new_cell->ports[new_name].name = new_name;
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new_cell->ports[new_name].type = old_cell->ports.at(old_name).type;
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connect_port(ctx, old_cell->ports.at(old_name).net, new_cell, new_name);
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}
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void copy_bus(Context *ctx, CellInfo *old_cell, IdString old_name, int old_offset, bool old_brackets,
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CellInfo *new_cell, IdString new_name, int new_offset, bool new_brackets, int width)
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{
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for (int i = 0; i < width; i++) {
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IdString old_port = ctx->id(stringf(old_brackets ? "%s[%d]" : "%s%d", old_name.c_str(ctx), i + old_offset));
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IdString new_port = ctx->id(stringf(new_brackets ? "%s[%d]" : "%s%d", new_name.c_str(ctx), i + new_offset));
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copy_port(ctx, old_cell, old_port, new_cell, new_port);
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}
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}
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NEXTPNR_NAMESPACE_END
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