74 lines
1.7 KiB
C
74 lines
1.7 KiB
C
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/*
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* nextpnr -- Next Generation Place and Route
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*
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* Copyright (C) 2024 rowanG077 <goemansrowan@gmail.com>
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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 TIMING_CONSTRAINT_H
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#define TIMING_CONSTRAINT_H
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#include "nextpnr.h"
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NEXTPNR_NAMESPACE_BEGIN
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struct FalsePath
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{
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};
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struct MinMaxDelay
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{
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enum class Type
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{
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MAXDELAY,
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MINDELAY
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};
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[[maybe_unused]] static const std::string type_to_str(Type typ)
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{
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switch (typ) {
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case Type::MAXDELAY:
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return "MAXDELAY";
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case Type::MINDELAY:
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return "MINDELAY";
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default:
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log_error("Impossible MinMaxDelay::Type");
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}
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}
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Type type;
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delay_t delay;
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bool datapath_only;
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};
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struct MultiCycle
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{
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size_t cycles;
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};
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using TimingException = std::variant<FalsePath, MinMaxDelay, MultiCycle>;
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struct PathConstraint
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{
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TimingException exception;
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pool<CellPortKey> from;
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pool<CellPortKey> to;
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};
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NEXTPNR_NAMESPACE_END
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#endif
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