45 lines
1.4 KiB
C++
45 lines
1.4 KiB
C++
/*
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* nextpnr -- Next Generation Place and Route
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*
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* Copyright (C) 2018 David Shah <david@symbioticeda.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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#include "timing.h"
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#include <algorithm>
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#include <unordered_map>
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#include <utility>
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#include "log.h"
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NEXTPNR_NAMESPACE_BEGIN
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// Follow a path, returning budget to annotate
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static delay_t follow_path(Context *ctx, const PortRef &begin, int path_length,
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delay_t slack)
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{
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if (ctx->getPortClock(begin.cell, begin.port) != IdString()) {
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return slack / path_length;
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} else {
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// ...
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}
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}
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void assign_budget(Context *ctx, float default_clock)
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{
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// TODO
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}
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NEXTPNR_NAMESPACE_END
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