nextpnr/ice40/chip.cc

/*
 *  nextpnr -- Next Generation Place and Route
 *
 *  Copyright (C) 2018  Clifford Wolf <clifford@clifford.at>
 *
 *  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 "chip.h"

// -----------------------------------------------------------------------

IdString belTypeToId(BelType type)
{
	if (type == TYPE_A) return "A";
	return IdString();
}

BelType belTypeFromId(IdString id)
{
	if (id == "A") return TYPE_A;
	return TYPE_NIL;
}

// -----------------------------------------------------------------------

IdString PortPinToId(PortPin type)
{
	if (type == PIN_FOO) return "FOO";
	if (type == PIN_BAR) return "BAR";
	return IdString();
}

PortPin PortPinFromId(IdString id)
{
	if (id == "FOO") return PIN_FOO;
	if (id == "BAR") return PIN_BAR;
	return PIN_NIL;
}

// -----------------------------------------------------------------------

Chip::Chip(ChipArgs args)
{
	if (args.type == ChipArgs::LP384) {
		num_bels = 0;
		bel_data = nullptr;
		num_wires = num_wires_384;
		wire_data = wire_data_384;
		return;
	}

	abort();
}

BelId Chip::getBelByName(IdString name) const
{
	BelId ret;

	if (bel_by_name.empty()) {
		for (int i = 0; i < num_bels; i++)
			bel_by_name[bel_data[i].name] = i;
	}

	auto it = bel_by_name.find(name);
	if (it != bel_by_name.end())
		ret.index = it->second;

	return ret;
}

WireId Chip::getWireByName(IdString name) const
{
	WireId ret;

	if (wire_by_name.empty()) {
		for (int i = 0; i < num_wires; i++)
			wire_by_name[wire_data[i].name] = i;
	}

	auto it = wire_by_name.find(name);
	if (it != wire_by_name.end())
		ret.index = it->second;

	return ret;
}

WireId Chip::getWireBelPin(BelId bel, PortPin pin) const
{
	// FIXME
	return WireId();
}