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Diffstat (limited to 'ecp5/globals.cc')
-rw-r--r-- | ecp5/globals.cc | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/ecp5/globals.cc b/ecp5/globals.cc new file mode 100644 index 00000000..d435ca93 --- /dev/null +++ b/ecp5/globals.cc @@ -0,0 +1,52 @@ +/* + * 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. + * + */ + +#include "nextpnr.h" + +NEXTPNR_NAMESPACE_BEGIN + +class Ecp5GlobalRouter +{ + public: + Ecp5GlobalRouter(Context *ctx) : ctx(ctx){}; + + PipId find_tap_pip(WireId tile_glb) + { + std::string wireName = ctx->getWireBasename(tile_glb).str(ctx); + std::string glbName = wireName.substr(2); + TapDirection td = ctx->globalInfoAtLoc(tile_glb.location).tap_dir; + WireId tap_wire; + Location tap_loc; + tap_loc.x = ctx->globalInfoAtLoc(tile_glb.location).tap_col; + tap_loc.y = tile_glb.location.y; + if (td == TAP_DIR_LEFT) { + tap_wire = ctx->getWireByLocAndBasename(tap_loc, "L_" + glbName); + } else { + tap_wire = ctx->getWireByLocAndBasename(tap_loc, "R_" + glbName); + } + return *(ctx->getPipsUphill(tap_wire).begin()); + } + + private: + Context *ctx; +}; + +void route_ecp5_globals(Context *ctx); + +NEXTPNR_NAMESPACE_END |