71 lines
1.7 KiB
C++
71 lines
1.7 KiB
C++
/*
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* nextpnr -- Next Generation Place and Route
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*
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* Copyright (C) 2018 gatecat <gatecat@ds0.me>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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*/
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#ifndef IO_H
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#define IO_H
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#include "nextpnr.h"
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NEXTPNR_NAMESPACE_BEGIN
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enum class IOVoltage
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{
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VCC_3V3,
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VCC_2V5,
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VCC_1V8,
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VCC_1V5,
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VCC_1V35,
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VCC_1V2
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};
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std::string iovoltage_to_str(IOVoltage v);
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IOVoltage iovoltage_from_str(const std::string &name);
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enum class IOType
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{
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TYPE_NONE,
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#define X(t) t,
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#include "iotypes.inc"
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#undef X
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TYPE_UNKNOWN,
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};
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enum class IOSide
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{
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LEFT,
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RIGHT,
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TOP,
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BOTTOM,
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};
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std::string iotype_to_str(IOType type);
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IOType ioType_from_str(const std::string &name);
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// IO related functions
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IOVoltage get_vccio(IOType type);
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bool is_strong_vccio_constraint(IOType type, PortType dir, IOSide side);
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bool is_differential(IOType type);
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bool is_referenced(IOType type);
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bool valid_loc_for_io(IOType type, PortType dir, IOSide side, int z);
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NEXTPNR_NAMESPACE_END
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#endif
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