mirror of https://github.com/YosysHQ/nextpnr.git
53 lines
1.7 KiB
C++
53 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) 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 "nextpnr.h"
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NEXTPNR_NAMESPACE_BEGIN
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class Ecp5GlobalRouter
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{
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public:
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Ecp5GlobalRouter(Context *ctx) : ctx(ctx){};
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PipId find_tap_pip(WireId tile_glb)
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{
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std::string wireName = ctx->getWireBasename(tile_glb).str(ctx);
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std::string glbName = wireName.substr(2);
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TapDirection td = ctx->globalInfoAtLoc(tile_glb.location).tap_dir;
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WireId tap_wire;
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Location tap_loc;
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tap_loc.x = ctx->globalInfoAtLoc(tile_glb.location).tap_col;
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tap_loc.y = tile_glb.location.y;
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if (td == TAP_DIR_LEFT) {
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tap_wire = ctx->getWireByLocAndBasename(tap_loc, "L_" + glbName);
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} else {
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tap_wire = ctx->getWireByLocAndBasename(tap_loc, "R_" + glbName);
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}
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return *(ctx->getPipsUphill(tap_wire).begin());
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}
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private:
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Context *ctx;
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};
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void route_ecp5_globals(Context *ctx);
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NEXTPNR_NAMESPACE_END
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