diff options
| -rw-r--r-- | ice40/bitstream.cc | 90 | ||||
| -rw-r--r-- | ice40/cells.cc | 5 | ||||
| -rw-r--r-- | ice40/pack.cc | 19 |
3 files changed, 111 insertions, 3 deletions
diff --git a/ice40/bitstream.cc b/ice40/bitstream.cc index 09312b07..c12fa90e 100644 --- a/ice40/bitstream.cc +++ b/ice40/bitstream.cc @@ -90,12 +90,79 @@ std::string get_param_str_or_def(const CellInfo *cell, const IdString param, std char get_hexdigit(int i) { return std::string("0123456789ABCDEF").at(i); } +static const BelConfigPOD &get_ec_config(const ChipInfoPOD *chip, BelId bel) +{ + for (int i = 0; i < chip->num_belcfgs; i++) { + if (chip->bel_config[i].bel_index == bel.index) + return chip->bel_config[i]; + } + NPNR_ASSERT_FALSE("failed to find bel config"); +} + +typedef std::vector<std::vector<std::vector<std::vector<int8_t>>>> chipconfig_t; + +static void set_ec_cbit(chipconfig_t &config, const Context *ctx, const BelConfigPOD &cell_cbits, std::string name, + bool value) +{ + const ChipInfoPOD *chip = ctx->chip_info; + + for (int i = 0; i < cell_cbits.num_entries; i++) { + const auto &cbit = cell_cbits.entries[i]; + if (cbit.entry_name.get() == name) { + const auto &ti = chip->bits_info->tiles_nonrouting[tile_at(ctx, cbit.x, cbit.y)]; + set_config(ti, config.at(cbit.y).at(cbit.x), std::string("IpConfig.") + cbit.cbit_name.get(), value); + return; + } + } + NPNR_ASSERT_FALSE_STR("failed to config extra cell config bit " + name); +} + +void configure_extra_cell(chipconfig_t &config, const Context *ctx, CellInfo *cell, + const std::vector<std::pair<std::string, int>> ¶ms, bool string_style) +{ + const ChipInfoPOD *chip = ctx->chip_info; + const auto &bc = get_ec_config(chip, cell->bel); + for (auto p : params) { + std::vector<bool> value; + if (string_style) { + // Lattice's weird string style params, not sure if + // prefixes other than 0b should be supported, only 0b features in docs + std::string raw = get_param_str_or_def(cell, ctx->id(p.first), "0b0"); + assert(raw.substr(0, 2) == "0b"); + raw = raw.substr(2); + value.resize(raw.length()); + for (int i = 0; i < (int)raw.length(); i++) { + if (raw[i] == '1') { + value[(raw.length() - 1) - i] = 1; + } else { + assert(raw[i] == '0'); + value[(raw.length() - 1) - i] = 0; + } + } + } else { + int ival = get_param_or_def(cell, ctx->id(p.first), 0); + + for (int i = 0; i < p.second; i++) + value.push_back((ival >> i) & 0x1); + } + + value.resize(p.second); + if (p.second == 1) { + set_ec_cbit(config, ctx, bc, p.first, value.at(0)); + } else { + for (int i = 0; i < p.second; i++) { + set_ec_cbit(config, ctx, bc, p.first + "_" + std::to_string(i), value.at(i)); + } + } + } +} + void write_asc(const Context *ctx, std::ostream &out) { // [y][x][row][col] const ChipInfoPOD &ci = *ctx->chip_info; const BitstreamInfoPOD &bi = *ci.bits_info; - std::vector<std::vector<std::vector<std::vector<int8_t>>>> config; + chipconfig_t config; config.resize(ci.height); for (int y = 0; y < ci.height; y++) { config.at(y).resize(ci.width); @@ -265,6 +332,27 @@ void write_asc(const Context *ctx, std::ostream &out) NPNR_ASSERT(false); } } + } else if (cell.second->type == ctx->id("ICESTORM_DSP")) { + const std::vector<std::pair<std::string, int>> mac16_params = {{"C_REG", 1}, + {"A_REG", 1}, + {"B_REG", 1}, + {"D_REG", 1}, + {"TOP_8x8_MULT_REG", 1}, + {"BOT_8x8_MULT_REG", 1}, + {"PIPELINE_16x16_MULT_REG1", 1}, + {"PIPELINE_16x16_MULT_REG2", 1}, + {"TOPOUTPUT_SELECT", 2}, + {"TOPADDSUB_LOWERINPUT", 2}, + {"TOPADDSUB_UPPERINPUT", 1}, + {"TOPADDSUB_CARRYSELECT", 2}, + {"BOTOUTPUT_SELECT", 2}, + {"BOTADDSUB_LOWERINPUT", 2}, + {"BOTADDSUB_UPPERINPUT", 1}, + {"BOTADDSUB_CARRYSELECT", 2}, + {"MODE_8x8", 1}, + {"A_SIGNED", 1}, + {"B_SIGNED", 1}}; + configure_extra_cell(config, ctx, cell.second.get(), mac16_params, false); } else { NPNR_ASSERT(false); } diff --git a/ice40/cells.cc b/ice40/cells.cc index f07e0d22..71a65d44 100644 --- a/ice40/cells.cc +++ b/ice40/cells.cc @@ -350,8 +350,9 @@ bool is_enable_port(const BaseCtx *ctx, const PortRef &port) return port.port == ctx->id("E"); if (port.cell->type == ctx->id("ICESTORM_LC")) return port.port == ctx->id("CEN"); - if (is_sb_mac16(ctx, port.cell) || port.cell->type == ctx->id("ICESTORM_DSP")) - return port.port == ctx->id("CE"); + // FIXME + // if (is_sb_mac16(ctx, port.cell) || port.cell->type == ctx->id("ICESTORM_DSP")) + // return port.port == ctx->id("CE"); return false; } diff --git a/ice40/pack.cc b/ice40/pack.cc index 5f7e95f3..78df00f6 100644 --- a/ice40/pack.cc +++ b/ice40/pack.cc @@ -568,6 +568,25 @@ static void pack_special(Context *ctx) replace_port(ci, ctx->id(pi.name.c_str(ctx)), packed.get(), ctx->id(newname)); } new_cells.push_back(std::move(packed)); + } else if (is_sb_mac16(ctx, ci)) { + std::unique_ptr<CellInfo> packed = + create_ice_cell(ctx, ctx->id("ICESTORM_DSP"), ci->name.str(ctx) + "_DSP"); + packed_cells.insert(ci->name); + for (auto attr : ci->attrs) + packed->attrs[attr.first] = attr.second; + for (auto param : ci->params) + packed->params[param.first] = param.second; + + for (auto port : ci->ports) { + PortInfo &pi = port.second; + std::string newname = pi.name.str(ctx); + size_t bpos = newname.find('['); + if (bpos != std::string::npos) { + newname = newname.substr(0, bpos) + "_" + newname.substr(bpos + 1, (newname.size() - bpos) - 2); + } + replace_port(ci, ctx->id(pi.name.c_str(ctx)), packed.get(), ctx->id(newname)); + } + new_cells.push_back(std::move(packed)); } } |