hier_chan.h

Kluwer.Academic.Pub.Systemc.From.The.Ground.Up-此全书的范例程式。

#ifndef HIER_CHAN_H
#define HIER_CHAN_H
//BEGIN hier_chan.h
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// DESCRIPTION
//   This design contains two examples of custom hierarchical channels.
//   First, mem_arch is a architectural model of a memory using the
//   custom CPU_if interface. Second, cpu2pca is a transactor that
//   adapts the CPU_if to a pin-cycle-accurate interface using signals.
//   mem_bsyn is a pin-cycle accurate behavioral model that may be
//   synthesizable.
//
//   To simplify understanding, we've put two sets of simulations in the
//   same model, one architectural and one with pin-level behavior. As
//   detour, the ea_heartbeat model is used for a clock.
//
//   Notice that the memories and testbench are instantiated with
//   parameters that affect their configuration.
//
// DESIGN HIERARCHY
//   sc_main()
//   +- hier_chan_i
//      +- testbench_arch_i
//      |     v
//      +- mem_arch_i (hierarchical channel)
//      |
//      +- testbench_bsyn_i
//      |     v
//      |  cpu2pca_i (transactor)
//      |     v
//      +- mem_bsyn_i
//      +- clock
//
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

#include <systemc.h>
#include "testbench.h"
#include "mem_arch.h"
#include "cpu2pca.h"
#include "mem_bsyn.h"
#include "ea_heartbeat.h"

SC_MODULE(hier_chan) {
  // Architectural model instances
  testbench                 testbench_arch_i;
  // Architectural model channels
  mem_arch                  mem_arch_i; // hierarchical channel
  // Pin-level model instances
  testbench                 testbench_bsyn_i;
  mem_bsyn                  mem_bsyn_i;
  // Pin-level model channels
  cpu2pca                   cpu2pca_i; // hierarchical transactor
  sc_signal<bool>           ld;
  sc_signal<bool>           rw;
  sc_signal<unsigned long>  a;
  sc_signal_rv<32>          d;
  sc_signal<bool>           done_arch;
  sc_signal<bool>           done_bsyn;
  ea_heartbeat              clock;
  SC_CTOR(hier_chan) 
  : testbench_arch_i("testbench_arch_i",3100,4100,100)
  , mem_arch_i("mem_arch_i",3000,1000)
  , testbench_bsyn_i("testbench_bsyn_i",5100,6100,100)
  , cpu2pca_i("cpu2pca_i")
  , mem_bsyn_i("mem_bsyn_i",5000,1000)
  , clock("clock",sc_time(2,SC_NS))
  {
    SC_METHOD(done_method);
      sensitive << done_arch << done_bsyn;
      dont_initialize();
    // Architectural model connectivity
    testbench_arch_i.mem(mem_arch_i);
    testbench_arch_i.done(done_arch);
    // Pin-level model connectivity
    testbench_bsyn_i.mem(cpu2pca_i);
    testbench_bsyn_i.done(done_bsyn);
    cpu2pca_i.ld(ld);
    cpu2pca_i.rw(rw);
    cpu2pca_i.a(a);
    cpu2pca_i.d(d);
    cpu2pca_i.ck(clock);
    mem_bsyn_i.ld(ld);
    mem_bsyn_i.rw(rw);
    mem_bsyn_i.a(a);
    mem_bsyn_i.d(d);
    mem_bsyn_i.ck(clock);
  }
  // This method waits for both tests to complete and then terminates SystemC
  void done_method() {
    if (done_arch.read() && done_bsyn.read()) sc_stop();
  }
};

#endif
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//END $Id: hier_chan.h,v 1.3 2004/05/05 19:46:21 dcblack Exp $