nextpnr/himbaechel/uarch/gowin/gowin_utils.h

#ifndef GOWIN_UTILS_H
#define GOWIN_UTILS_H

#include "idstringlist.h"
#include "nextpnr_namespaces.h"
#include "nextpnr_types.h"

NEXTPNR_NAMESPACE_BEGIN

namespace BelFlags {
static constexpr uint32_t FLAG_SIMPLE_IO = 0x100;
}

struct GowinUtils
{
    Context *ctx;

    GowinUtils() {}

    void init(Context *ctx) { this->ctx = ctx; }

    // tile
    IdString get_tile_class(int x, int y);
    Loc get_tile_io16_offs(int x, int y);

    // pin functions: GCLKT_4, SSPI_CS, READY etc
    IdStringList get_pin_funcs(BelId bel);

    // Bels and pips
    bool is_simple_io_bel(BelId bel);
    Loc get_pair_iologic_bel(Loc loc);
    BelId get_io_bel_from_iologic(BelId bel);

    bool is_diff_io_supported(IdString type);
    bool have_bottom_io_cnds(void);
    IdString get_bottom_io_wire_a_net(int8_t condition);
    IdString get_bottom_io_wire_b_net(int8_t condition);

    // wires
    inline bool is_wire_type_default(IdString wire_type) { return wire_type == IdString(); }
    // If wire is an important part of the global network (like SPINExx)
    inline bool is_global_wire(WireId wire) const
    {
        return ctx->getWireName(wire)[1].in(
                id_SPINE0, id_SPINE1, id_SPINE2, id_SPINE3, id_SPINE4, id_SPINE5, id_SPINE6, id_SPINE7, id_SPINE8,
                id_SPINE9, id_SPINE10, id_SPINE11, id_SPINE12, id_SPINE13, id_SPINE14, id_SPINE15, id_SPINE16,
                id_SPINE17, id_SPINE18, id_SPINE19, id_SPINE20, id_SPINE21, id_SPINE22, id_SPINE23, id_SPINE24,
                id_SPINE25, id_SPINE26, id_SPINE27, id_SPINE28, id_SPINE29, id_SPINE30, id_SPINE31);
    }

    // pips
    inline bool is_global_pip(PipId pip) const
    {
        return is_global_wire(ctx->getPipSrcWire(pip)) || is_global_wire(ctx->getPipDstWire(pip));
    }

    // chip dependent
    bool have_SP32(void);

    // make cell but do not include it in the list of chip cells.
    std::unique_ptr<CellInfo> create_cell(IdString name, IdString type);
};

NEXTPNR_NAMESPACE_END

#endif