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/*
* nextpnr -- Next Generation Place and Route
*
* 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.
*
*/
#ifndef IO_H
#define IO_H
#include "nextpnr.h"
NEXTPNR_NAMESPACE_BEGIN
enum class IOVoltage
{
VCC_3V3,
VCC_2V5,
VCC_1V8,
VCC_1V5,
VCC_1V35,
VCC_1V2
};
std::string iovoltage_to_str(IOVoltage v);
IOVoltage iovoltage_from_str(const std::string &name);
enum class IOType
{
TYPE_NONE,
#define X(t) t,
#include "iotypes.inc"
#undef X
TYPE_UNKNOWN,
};
enum class IOSide
{
LEFT,
RIGHT,
TOP,
BOTTOM,
};
std::string iotype_to_str(IOType type);
IOType ioType_from_str(const std::string &name);
// IO related functions
IOVoltage get_vccio(IOType type);
bool is_strong_vccio_constraint(IOType type, PortType dir, IOSide side);
bool is_differential(IOType type);
bool is_referenced(IOType type);
bool valid_loc_for_io(IOType type, PortType dir, IOSide side, int z);
NEXTPNR_NAMESPACE_END
#endif
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