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_ICESTORM_LC) return "ICESTORM_LC";
	return IdString();
}

BelType belTypeFromId(IdString id)
{
	if (id == "ICESTORM_LC") return TYPE_ICESTORM_LC;
	return TYPE_NIL;
}

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

IdString PortPinToId(PortPin type)
{
	if (type == PIN_IN_0) return "IN_0";
	if (type == PIN_IN_1) return "IN_1";
	if (type == PIN_IN_2) return "IN_2";
	if (type == PIN_IN_3) return "IN_3";
	if (type == PIN_O   ) return "O";
	if (type == PIN_LO  ) return "LO";
	if (type == PIN_CIN ) return "CIN";
	if (type == PIN_COUT) return "COUT";
	if (type == PIN_CEN ) return "CEN";
	if (type == PIN_CLK ) return "CLK";
	if (type == PIN_SR  ) return "SR";
	return IdString();
}

PortPin PortPinFromId(IdString id)
{
	if (id == "IN_0") return PIN_IN_0;
	if (id == "IN_1") return PIN_IN_1;
	if (id == "IN_2") return PIN_IN_2;
	if (id == "IN_3") return PIN_IN_3;
	if (id == "O"   ) return PIN_O;
	if (id == "LO"  ) return PIN_LO;
	if (id == "CIN" ) return PIN_CIN;
	if (id == "COUT") return PIN_COUT;
	if (id == "CEN" ) return PIN_CEN;
	if (id == "CLK" ) return PIN_CLK;
	if (id == "SR"  ) return PIN_SR;
	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();
}