95 lines
2.8 KiB
C++
95 lines
2.8 KiB
C++
/*
|
|
* nextpnr -- Next Generation Place and Route
|
|
*
|
|
* Copyright (C) 2019 gatecat <gatecat@ds0.me>
|
|
* Copyright (C) 2020 Pepijn de Vos <pepijn@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"
|
|
|
|
#ifndef GENERIC_CELLS_H
|
|
#define GENERIC_CELLS_H
|
|
|
|
NEXTPNR_NAMESPACE_BEGIN
|
|
|
|
// Create a generic arch cell and return it
|
|
// Name will be automatically assigned if not specified
|
|
std::unique_ptr<CellInfo> create_generic_cell(Context *ctx, IdString type, std::string name = "");
|
|
|
|
// Return true if a cell is a LUT
|
|
inline bool is_lut(const BaseCtx *ctx, const CellInfo *cell)
|
|
{
|
|
switch (cell->type.index) {
|
|
case ID_LUT1:
|
|
case ID_LUT2:
|
|
case ID_LUT3:
|
|
case ID_LUT4:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// Return true if a cell is a flipflop
|
|
inline bool is_ff(const BaseCtx *ctx, const CellInfo *cell)
|
|
{
|
|
switch (cell->type.index) {
|
|
case ID_DFF:
|
|
case ID_DFFE:
|
|
case ID_DFFS:
|
|
case ID_DFFSE:
|
|
case ID_DFFR:
|
|
case ID_DFFRE:
|
|
case ID_DFFP:
|
|
case ID_DFFPE:
|
|
case ID_DFFC:
|
|
case ID_DFFCE:
|
|
case ID_DFFN:
|
|
case ID_DFFNE:
|
|
case ID_DFFNS:
|
|
case ID_DFFNSE:
|
|
case ID_DFFNR:
|
|
case ID_DFFNRE:
|
|
case ID_DFFNP:
|
|
case ID_DFFNPE:
|
|
case ID_DFFNC:
|
|
case ID_DFFNCE:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
inline bool is_lc(const BaseCtx *ctx, const CellInfo *cell) { return cell->type == id_SLICE; }
|
|
|
|
// Convert a LUT primitive to (part of) an GENERIC_SLICE, swapping ports
|
|
// as needed. Set no_dff if a DFF is not being used, so that the output
|
|
// can be reconnected
|
|
void lut_to_lc(const Context *ctx, CellInfo *lut, CellInfo *lc, bool no_dff = true);
|
|
|
|
// Convert a DFF primitive to (part of) an GENERIC_SLICE, setting parameters
|
|
// and reconnecting signals as necessary. If pass_thru_lut is True, the LUT will
|
|
// be configured as pass through and D connected to I0, otherwise D will be
|
|
// ignored
|
|
void dff_to_lc(const Context *ctx, CellInfo *dff, CellInfo *lc, bool pass_thru_lut = false);
|
|
|
|
// Convert a Gowin IO buffer to a IOB bel
|
|
void gwio_to_iob(Context *ctx, CellInfo *nxio, CellInfo *sbio, pool<IdString> &todelete_cells);
|
|
|
|
NEXTPNR_NAMESPACE_END
|
|
|
|
#endif
|