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/*
* nextpnr -- Next Generation Place and Route
*
* Copyright (C) 2018 Clifford Wolf <clifford@symbioticeda.com>
* Copyright (C) 2018 David Shah <david@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 "design_utils.h"
#include <algorithm>
#include <map>
#include "log.h"
#include "util.h"
NEXTPNR_NAMESPACE_BEGIN
void replace_port(CellInfo *old_cell, IdString old_name, CellInfo *rep_cell, IdString rep_name)
{
if (!old_cell->ports.count(old_name))
return;
PortInfo &old = old_cell->ports.at(old_name);
// Create port on the replacement cell if it doesn't already exist
if (!rep_cell->ports.count(rep_name)) {
rep_cell->ports[rep_name].name = rep_name;
rep_cell->ports[rep_name].type = old.type;
}
PortInfo &rep = rep_cell->ports.at(rep_name);
NPNR_ASSERT(old.type == rep.type);
rep.net = old.net;
old.net = nullptr;
if (rep.type == PORT_OUT) {
if (rep.net != nullptr) {
rep.net->driver.cell = rep_cell;
rep.net->driver.port = rep_name;
}
} else if (rep.type == PORT_IN) {
if (rep.net != nullptr) {
for (PortRef &load : rep.net->users) {
if (load.cell == old_cell && load.port == old_name) {
load.cell = rep_cell;
load.port = rep_name;
}
}
}
} else {
NPNR_ASSERT(false);
}
}
// Print utilisation of a design
void print_utilisation(const Context *ctx)
{
// Sort by Bel type
std::map<IdString, int> used_types;
for (auto &cell : ctx->cells) {
used_types[cell.second.get()->type]++;
}
std::map<IdString, int> available_types;
for (auto bel : ctx->getBels()) {
available_types[ctx->getBelType(bel)]++;
}
log_break();
log_info("Device utilisation:\n");
for (auto type : available_types) {
IdString type_id = type.first;
int used_bels = get_or_default(used_types, type.first, 0);
log_info("\t%20s: %5d/%5d %5d%%\n", type_id.c_str(ctx), used_bels, type.second, 100 * used_bels / type.second);
}
log_break();
}
// Connect a net to a port
void connect_port(const Context *ctx, NetInfo *net, CellInfo *cell, IdString port_name)
{
if (net == nullptr)
return;
PortInfo &port = cell->ports.at(port_name);
NPNR_ASSERT(port.net == nullptr);
port.net = net;
if (port.type == PORT_OUT) {
NPNR_ASSERT(net->driver.cell == nullptr);
net->driver.cell = cell;
net->driver.port = port_name;
} else if (port.type == PORT_IN || port.type == PORT_INOUT) {
PortRef user;
user.cell = cell;
user.port = port_name;
net->users.push_back(user);
} else {
NPNR_ASSERT_FALSE("invalid port type for connect_port");
}
}
void disconnect_port(const Context *ctx, CellInfo *cell, IdString port_name)
{
if (!cell->ports.count(port_name))
return;
PortInfo &port = cell->ports.at(port_name);
if (port.net != nullptr) {
port.net->users.erase(std::remove_if(port.net->users.begin(), port.net->users.end(),
[cell, port_name](const PortRef &user) {
return user.cell == cell && user.port == port_name;
}),
port.net->users.end());
if (port.net->driver.cell == cell && port.net->driver.port == port_name)
port.net->driver.cell = nullptr;
port.net = nullptr;
}
}
void connect_ports(Context *ctx, CellInfo *cell1, IdString port1_name, CellInfo *cell2, IdString port2_name)
{
PortInfo &port1 = cell1->ports.at(port1_name);
if (port1.net == nullptr) {
// No net on port1; need to create one
std::unique_ptr<NetInfo> p1net(new NetInfo());
p1net->name = ctx->id(cell1->name.str(ctx) + "$conn$" + port1_name.str(ctx));
connect_port(ctx, p1net.get(), cell1, port1_name);
IdString p1name = p1net->name;
NPNR_ASSERT(!ctx->cells.count(p1name));
ctx->nets[p1name] = std::move(p1net);
}
connect_port(ctx, port1.net, cell2, port2_name);
}
void rename_port(Context *ctx, CellInfo *cell, IdString old_name, IdString new_name)
{
if (!cell->ports.count(old_name))
return;
PortInfo pi = cell->ports.at(old_name);
if (pi.net != nullptr) {
if (pi.net->driver.cell == cell && pi.net->driver.port == old_name)
pi.net->driver.port = new_name;
for (auto &usr : pi.net->users)
if (usr.cell == cell && usr.port == old_name)
usr.port = new_name;
}
cell->ports.erase(old_name);
pi.name = new_name;
cell->ports[new_name] = pi;
}
void rename_net(Context *ctx, NetInfo *net, IdString new_name)
{
if (net == nullptr)
return;
NPNR_ASSERT(!ctx->nets.count(new_name));
std::swap(ctx->nets[net->name], ctx->nets[new_name]);
ctx->nets.erase(net->name);
net->name = new_name;
}
void replace_bus(Context *ctx, CellInfo *old_cell, IdString old_name, int old_offset, bool old_brackets,
CellInfo *new_cell, IdString new_name, int new_offset, bool new_brackets, int width)
{
for (int i = 0; i < width; i++) {
IdString old_port = ctx->id(stringf(old_brackets ? "%s[%d]" : "%s%d", old_name.c_str(ctx), i + old_offset));
IdString new_port = ctx->id(stringf(new_brackets ? "%s[%d]" : "%s%d", new_name.c_str(ctx), i + new_offset));
replace_port(old_cell, old_port, new_cell, new_port);
}
}
void copy_port(Context *ctx, CellInfo *old_cell, IdString old_name, CellInfo *new_cell, IdString new_name)
{
if (!old_cell->ports.count(old_name))
return;
new_cell->ports[new_name].name = new_name;
new_cell->ports[new_name].type = old_cell->ports.at(old_name).type;
connect_port(ctx, old_cell->ports.at(old_name).net, new_cell, new_name);
}
void copy_bus(Context *ctx, CellInfo *old_cell, IdString old_name, int old_offset, bool old_brackets,
CellInfo *new_cell, IdString new_name, int new_offset, bool new_brackets, int width)
{
for (int i = 0; i < width; i++) {
IdString old_port = ctx->id(stringf(old_brackets ? "%s[%d]" : "%s%d", old_name.c_str(ctx), i + old_offset));
IdString new_port = ctx->id(stringf(new_brackets ? "%s[%d]" : "%s%d", new_name.c_str(ctx), i + new_offset));
copy_port(ctx, old_cell, old_port, new_cell, new_port);
}
}
NEXTPNR_NAMESPACE_END
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