[FPGA-SPICE] Add auxiliary SPICE netlist writer

openfpga/src/fpga_spice/spice_api.cpp

@@ -19,6 +19,7 @@
 #include "spice_routing.h"
 #include "spice_grid.h"
 #include "spice_top_module.h"
+#include "spice_auxiliary_netlists.h"
 
 /* Header file for this source file */
 #include "spice_api.h"
@@ -114,11 +115,9 @@ int fpga_fabric_spice(const ModuleManager& module_manager,
                          src_dir_path);
 
   /* Generate an netlist including all the fabric-related netlists */
-  /*
-  print_fabric_include_netlist(const_cast<const NetlistManager &>(netlist_manager),
-                               src_dir_path,
-                               circuit_lib);
-   */
+  print_spice_fabric_include_netlist(const_cast<const NetlistManager &>(netlist_manager),
+                                     src_dir_path,
+                                     openfpga_arch.circuit_lib);
 
   /* Given a brief stats on how many Spice modules have been written to files */
   VTR_LOGV(options.verbose_output(),

openfpga/src/fpga_spice/spice_auxiliary_netlists.cpp

@@ -0,0 +1,86 @@
+/********************************************************************
+ * This file includes functions that are used to generate SPICE files
+ * or code blocks, with a focus on 
+ * `include user-defined or auto-generated netlists in SPICE format
+ *******************************************************************/
+#include <fstream>
+
+/* Headers from vtrutil library */
+#include "vtr_assert.h"
+
+/* Headers from openfpgautil library */
+#include "openfpga_digest.h"
+
+#include "openfpga_naming.h"
+#include "circuit_library_utils.h"
+#include "spice_constants.h"
+#include "spice_writer_utils.h"
+#include "spice_auxiliary_netlists.h"
+
+/* begin namespace openfpga */
+namespace openfpga {
+
+/********************************************************************
+ * Local constant variables
+ *******************************************************************/
+
+/********************************************************************
+ * Print a file that includes all the fabric netlists 
+ * that have been generated  and user-defined.
+ * This does NOT include any testbenches!
+ * Some netlists are open to compile under specific preprocessing flags
+ *******************************************************************/
+void print_spice_fabric_include_netlist(const NetlistManager& netlist_manager,
+                                        const std::string& src_dir,
+                                        const CircuitLibrary& circuit_lib) {
+  std::string spice_fname = src_dir + std::string(FABRIC_INCLUDE_SPICE_NETLIST_FILE_NAME);
+
+  /* Create the file stream */
+  std::fstream fp;
+  fp.open(spice_fname, std::fstream::out | std::fstream::trunc);
+
+  /* Validate the file stream */
+  check_file_stream(spice_fname.c_str(), fp);
+
+  /* Print the title */
+  print_spice_file_header(fp, std::string("Fabric Netlist Summary")); 
+
+  /* Include all the user-defined netlists */
+  print_spice_comment(fp, std::string("Include user-defined netlists"));
+  for (const std::string& user_defined_netlist : find_circuit_library_unique_spice_netlists(circuit_lib)) {
+    print_spice_include_netlist(fp, user_defined_netlist);
+  }
+
+  /* Include all the primitive modules */
+  print_spice_comment(fp, std::string("Include primitive module netlists"));
+  for (const NetlistId& nlist_id : netlist_manager.netlists_by_type(NetlistManager::SUBMODULE_NETLIST)) {
+    print_spice_include_netlist(fp, netlist_manager.netlist_name(nlist_id));
+  }
+  fp << std::endl;
+
+  /* Include all the CLB, heterogeneous block modules */
+  print_spice_comment(fp, std::string("Include logic block netlists"));
+  for (const NetlistId& nlist_id : netlist_manager.netlists_by_type(NetlistManager::LOGIC_BLOCK_NETLIST)) {
+    print_spice_include_netlist(fp, netlist_manager.netlist_name(nlist_id));
+  }
+  fp << std::endl;
+
+  /* Include all the routing architecture modules */
+  print_spice_comment(fp, std::string("Include routing module netlists"));
+  for (const NetlistId& nlist_id : netlist_manager.netlists_by_type(NetlistManager::ROUTING_MODULE_NETLIST)) {
+    print_spice_include_netlist(fp, netlist_manager.netlist_name(nlist_id));
+  }
+  fp << std::endl;
+
+  /* Include FPGA top module */
+  print_spice_comment(fp, std::string("Include fabric top-level netlists"));
+  for (const NetlistId& nlist_id : netlist_manager.netlists_by_type(NetlistManager::TOP_MODULE_NETLIST)) {
+    print_spice_include_netlist(fp, netlist_manager.netlist_name(nlist_id));
+  }
+  fp << std::endl;
+
+  /* Close the file stream */
+  fp.close();
+}
+
+} /* end namespace openfpga */

openfpga/src/fpga_spice/spice_auxiliary_netlists.h

@@ -0,0 +1,24 @@
+#ifndef SPICE_AUXILIARY_NETLISTS_H
+#define SPICE_AUXILIARY_NETLISTS_H
+
+/********************************************************************
+ * Include header files that are required by function declaration
+ *******************************************************************/
+#include <string>
+#include "circuit_library.h"
+#include "netlist_manager.h"
+
+/********************************************************************
+ * Function declaration
+ *******************************************************************/
+
+/* begin namespace openfpga */
+namespace openfpga {
+
+void print_spice_fabric_include_netlist(const NetlistManager& netlist_manager,
+                                        const std::string& src_dir,
+                                        const CircuitLibrary& circuit_lib);
+
+} /* end namespace openfpga */
+
+#endif 

openfpga/src/fpga_spice/spice_constants.h

@@ -12,6 +12,7 @@ constexpr char* SUPPLY_WRAPPER_SPICE_FILE_NAME = "supply_wrapper.sp";
 constexpr char* MUXES_SPICE_FILE_NAME = "muxes.sp";
 constexpr char* LUTS_SPICE_FILE_NAME = "luts.sp";
 constexpr char* MEMORIES_SPICE_FILE_NAME = "memories.sp";
+constexpr char* FABRIC_INCLUDE_SPICE_NETLIST_FILE_NAME = "fabric_netlists.sp";
 
 constexpr char* SPICE_SUBCKT_VDD_PORT_NAME = "VDD";
 constexpr char* SPICE_SUBCKT_GND_PORT_NAME = "VSS";

openfpga/src/utils/circuit_library_utils.cpp

@@ -251,6 +251,29 @@ std::vector<std::string> find_circuit_library_unique_verilog_netlists(const Circ
  return netlists;
 }
 
+/********************************************************************
+ * A generic function to find all the unique user-defined
+ * Verilog netlists in a circuit library
+ * Netlists with same names will be considered as one
+ *******************************************************************/
+std::vector<std::string> find_circuit_library_unique_spice_netlists(const CircuitLibrary& circuit_lib) {
+  std::vector<std::string> netlists;
+
+  for (const CircuitModelId& model : circuit_lib.models()) {
+    /* Skip empty netlist names */
+    if (true == circuit_lib.model_spice_netlist(model).empty()) {
+      continue;
+    }
+    /* See if the netlist name is already in the list */
+    std::vector<std::string>::iterator it = std::find(netlists.begin(), netlists.end(), circuit_lib.model_spice_netlist(model));
+    if (it == netlists.end()) {
+      netlists.push_back(circuit_lib.model_spice_netlist(model));
+    }
+  }
+
+ return netlists;
+}
+
 /************************************************************************
  * Advanced check if the circuit model of configurable memory
  * satisfy the needs of configuration protocol

openfpga/src/utils/circuit_library_utils.h

@@ -39,6 +39,8 @@ std::vector<CircuitPortId> find_circuit_library_global_ports(const CircuitLibrar
 
 std::vector<std::string> find_circuit_library_unique_verilog_netlists(const CircuitLibrary& circuit_lib);
 
+std::vector<std::string> find_circuit_library_unique_spice_netlists(const CircuitLibrary& circuit_lib);
+
 bool check_configurable_memory_circuit_model(const e_config_protocol_type& config_protocol_type,
                                              const CircuitLibrary& circuit_lib,
                                              const CircuitModelId& config_mem_circuit_model);