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/*
* nextpnr -- Next Generation Place and Route
*
* Copyright (C) 2021 gatecat <gatecat@ds0.me>
*
* 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 "viaduct_api.h"
#include "nextpnr.h"
// Default implementations for Viaduct API hooks
NEXTPNR_NAMESPACE_BEGIN
void ViaductAPI::init(Context *ctx) { this->ctx = ctx; }
std::vector<IdString> ViaductAPI::getCellTypes() const
{
pool<IdString> cell_types;
for (auto bel : ctx->bels) {
cell_types.insert(bel.type);
}
return std::vector<IdString>{cell_types.begin(), cell_types.end()};
}
BelBucketId ViaductAPI::getBelBucketForBel(BelId bel) const { return ctx->getBelType(bel); }
BelBucketId ViaductAPI::getBelBucketForCellType(IdString cell_type) const { return cell_type; }
bool ViaductAPI::isValidBelForCellType(IdString cell_type, BelId bel) const
{
return ctx->getBelType(bel) == cell_type;
}
delay_t ViaductAPI::estimateDelay(WireId src, WireId dst) const
{
const WireInfo &s = ctx->wire_info(src);
const WireInfo &d = ctx->wire_info(dst);
int dx = abs(s.x - d.x);
int dy = abs(s.y - d.y);
return (dx + dy) * ctx->args.delayScale + ctx->args.delayOffset;
}
delay_t ViaductAPI::predictDelay(BelId src_bel, IdString src_pin, BelId dst_bel, IdString dst_pin) const
{
NPNR_UNUSED(src_pin);
NPNR_UNUSED(dst_pin);
auto driver_loc = ctx->getBelLocation(src_bel);
auto sink_loc = ctx->getBelLocation(dst_bel);
int dx = abs(sink_loc.x - driver_loc.x);
int dy = abs(sink_loc.y - driver_loc.y);
return (dx + dy) * ctx->args.delayScale + ctx->args.delayOffset;
}
BoundingBox ViaductAPI::getRouteBoundingBox(WireId src, WireId dst) const
{
BoundingBox bb;
int src_x = ctx->wire_info(src).x;
int src_y = ctx->wire_info(src).y;
int dst_x = ctx->wire_info(dst).x;
int dst_y = ctx->wire_info(dst).y;
bb.x0 = src_x;
bb.y0 = src_y;
bb.x1 = src_x;
bb.y1 = src_y;
auto extend = [&](int x, int y) {
bb.x0 = std::min(bb.x0, x);
bb.x1 = std::max(bb.x1, x);
bb.y0 = std::min(bb.y0, y);
bb.y1 = std::max(bb.y1, y);
};
extend(dst_x, dst_y);
return bb;
}
ViaductArch *ViaductArch::list_head;
ViaductArch::ViaductArch(const std::string &name) : name(name)
{
list_next = ViaductArch::list_head;
ViaductArch::list_head = this;
}
std::string ViaductArch::list()
{
std::string result;
ViaductArch *cursor = ViaductArch::list_head;
while (cursor) {
if (!result.empty())
result += ", ";
result += cursor->name;
cursor = cursor->list_next;
}
return result;
}
std::unique_ptr<ViaductAPI> ViaductArch::create(const std::string &name, const dict<std::string, std::string> &args)
{
ViaductArch *cursor = ViaductArch::list_head;
while (cursor) {
if (cursor->name != name) {
cursor = cursor->list_next;
continue;
}
return cursor->create(args);
}
return {};
}
NEXTPNR_NAMESPACE_END
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