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/*
* nextpnr -- Next Generation Place and Route
*
* Copyright (C) 2021 gatecat <gatecat@ds0.me>
*
* 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 "log.h"
#include "nextpnr.h"
#include "util.h"
NEXTPNR_NAMESPACE_BEGIN
const dict<IdString, Arch::CellPinsData> Arch::cell_pins_db = {
// For combinational cells, inversion and tieing can be implemented by manipulating the LUT function
{id_MISTRAL_ALUT2, {{{}, PINSTYLE_COMB}}},
{id_MISTRAL_ALUT3, {{{}, PINSTYLE_COMB}}},
{id_MISTRAL_ALUT4, {{{}, PINSTYLE_COMB}}},
{id_MISTRAL_ALUT5, {{{}, PINSTYLE_COMB}}},
{id_MISTRAL_ALUT6, {{{}, PINSTYLE_COMB}}},
{id_MISTRAL_ALUT_ARITH,
{// Leave carry chain alone, other than disconnecting a ground constant
{id_CI, PINSTYLE_CARRY},
{{}, PINSTYLE_COMB}}},
{id_MISTRAL_FF,
{
{id_CLK, PINSTYLE_CLK},
{id_ENA, PINSTYLE_CE},
{id_ACLR, PINSTYLE_RST},
{id_SCLR, PINSTYLE_RST},
{id_SLOAD, PINSTYLE_RST},
{id_SDATA, PINSTYLE_DEDI},
{id_DATAIN, PINSTYLE_INP},
}},
{id_MISTRAL_MLAB,
{
{id_CLK1, PINSTYLE_CLK},
{id_A1EN, PINSTYLE_CE},
}}};
CellPinStyle Arch::get_cell_pin_style(const CellInfo *cell, IdString port) const
{
// Look up the pin style in the cell database
auto fnd_cell = cell_pins_db.find(cell->type);
if (fnd_cell == cell_pins_db.end())
return PINSTYLE_NONE;
auto fnd_port = fnd_cell->second.find(port);
if (fnd_port != fnd_cell->second.end())
return fnd_port->second;
// If there isn't an exact port match, then the empty IdString
// represents a wildcard default match
auto fnd_default = fnd_cell->second.find({});
if (fnd_default != fnd_cell->second.end())
return fnd_default->second;
return PINSTYLE_NONE;
}
NEXTPNR_NAMESPACE_END
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