OpenFPGA/openfpga/src/fabric/build_device_module.cpp

/********************************************************************
 * This file includes the main function to build module graphs
 * for the FPGA fabric
 *******************************************************************/

/* Headers from vtrutil library */
#include "vtr_assert.h"
#include "vtr_log.h"
#include "vtr_time.h"

#include "build_essential_modules.h"
#include "build_decoder_modules.h"
#include "build_mux_modules.h"
#include "build_lut_modules.h"
#include "build_wire_modules.h"
#include "build_memory_modules.h"
//#include "build_grid_modules.h"
//#include "build_routing_modules.h"
//#include "build_top_module.h"
#include "build_device_module.h"

/* begin namespace openfpga */
namespace openfpga {

/********************************************************************
 * The main function to be called for building module graphs 
 * for a FPGA fabric
 *******************************************************************/
ModuleManager build_device_module_graph(const DeviceContext& vpr_device_ctx,
                                        const OpenfpgaContext& openfpga_ctx) {
  vtr::ScopedStartFinishTimer timer("Build fabric module graph");

  /* Module manager to be built */
  ModuleManager module_manager;

  CircuitModelId sram_model = openfpga_ctx.arch().config_protocol.memory_model();  
  VTR_ASSERT(true == openfpga_ctx.arch().circuit_lib.valid_model_id(sram_model));

  /* Add constant generator modules: VDD and GND */
  build_constant_generator_modules(module_manager);

  /* Register all the user-defined modules in the module manager
   * This should be done prior to other steps in this function, 
   * because they will be instanciated by other primitive modules
   */
  build_user_defined_modules(module_manager, openfpga_ctx.arch().circuit_lib);

  /* Build elmentary modules */
  build_essential_modules(module_manager, openfpga_ctx.arch().circuit_lib);

  /* Build local encoders for multiplexers, this MUST be called before multiplexer building */
  build_mux_local_decoder_modules(module_manager, openfpga_ctx.mux_lib(), 
                                  openfpga_ctx.arch().circuit_lib);

  /* Build multiplexer modules */
  build_mux_modules(module_manager, openfpga_ctx.mux_lib(), openfpga_ctx.arch().circuit_lib);

  /* Build LUT modules */
  build_lut_modules(module_manager, openfpga_ctx.arch().circuit_lib);

  /* Build wire modules */
  build_wire_modules(module_manager, openfpga_ctx.arch().circuit_lib);

  /* Build memory modules */
  build_memory_modules(module_manager, openfpga_ctx.mux_lib(), 
                       openfpga_ctx.arch().circuit_lib,
                       openfpga_ctx.arch().config_protocol.type());

  /* Build grid and programmable block modules */
  //build_grid_modules(module_manager, arch.spice->circuit_lib, mux_lib,  
  //                   arch.sram_inf.verilog_sram_inf_orgz->type, sram_model,
  //                   TRUE == vpr_setup.FPGA_SPICE_Opts.duplicate_grid_pin);

  //if (TRUE == vpr_setup.FPGA_SPICE_Opts.compact_routing_hierarchy) {
  //  build_unique_routing_modules(module_manager, L_device_rr_gsb, arch.spice->circuit_lib, 
  //                               arch.sram_inf.verilog_sram_inf_orgz->type, sram_model, 
  //                               vpr_setup.RoutingArch, rr_switches);
  //} else {
  //  VTR_ASSERT(FALSE == vpr_setup.FPGA_SPICE_Opts.compact_routing_hierarchy);
  //  build_flatten_routing_modules(module_manager, L_device_rr_gsb, arch.spice->circuit_lib, 
  //                                arch.sram_inf.verilog_sram_inf_orgz->type, sram_model, 
  //                                vpr_setup.RoutingArch, rr_switches);
  //}


  /* Build FPGA fabric top-level module */
  //build_top_module(module_manager, arch.spice->circuit_lib, 
  //                 device_size, grids, L_device_rr_gsb, 
  //                 clb2clb_directs, 
  //                 arch.sram_inf.verilog_sram_inf_orgz->type, sram_model, 
  //                 TRUE == vpr_setup.FPGA_SPICE_Opts.compact_routing_hierarchy,
  //                 TRUE == vpr_setup.FPGA_SPICE_Opts.duplicate_grid_pin);

  /* Now a critical correction has to be done!
   * In the module construction, we always use prefix of ports because they are binded
   * to the ports in architecture description (logic blocks etc.)
   * To interface with standard cell, we should
   * rename the ports of primitive modules using lib_name instead of prefix
   * (which have no children and are probably linked to a standard cell!)
   */
  //rename_primitive_module_port_names(module_manager, arch.spice->circuit_lib);

  return module_manager;
}

} /* end namespace openfpga */