tofino/match_table.cpp

 
/* mau table template specializations for tofino -- #included directly in match_tables.cpp */
 
template <>
void MatchTable::write_next_table_regs(Target::Tofino::mau_regs &regs, Table *tbl) {
    auto &merge = regs.rams.match.merge;
    // Copies the values directly from the hit map provided by the compiler directly into the
    // map
    if (!tbl->get_hit_next().empty()) {
        merge.next_table_map_en |= (1U << logical_id);
        auto &mp = merge.next_table_map_data[logical_id];
        ubits<8> *map_data[8] = {&mp[0].next_table_map_data0, &mp[0].next_table_map_data1,
                                 &mp[0].next_table_map_data2, &mp[0].next_table_map_data3,
                                 &mp[1].next_table_map_data0, &mp[1].next_table_map_data1,
                                 &mp[1].next_table_map_data2, &mp[1].next_table_map_data3};
        int index = 0;
        for (auto &n : tbl->get_hit_next()) *map_data[index++] = n.next_table_id();
    }
 
    merge.next_table_format_data[logical_id].match_next_table_adr_mask = next_table_adr_mask;

    merge.next_table_format_data[logical_id].match_next_table_adr_miss_value =
        tbl->get_miss_next().next_table_id();
}
 
template <>
void MatchTable::write_regs(Target::Tofino::mau_regs &regs, int type, Table *result) {
    write_common_regs<Target::Tofino>(regs, type, result);
}