source: trunk/platforms/tsarv4_generic_mmu/top.cpp @ 238

/////////////////////////////////////////////////////////////////////////
// File: top.cpp 
// Author: Alain Greiner 
// Copyright: UPMC/LIP6
// Date : june 2011
// This program is released under the GNU public license
/////////////////////////////////////////////////////////////////////////
// This file define a generic TSAR architecture with virtual memory.
// - It uses vci_local_crossbar as local interconnect 
// - It uses virtual_dspin as global interconnect
// - It uses the vci_cc_vcache_wrapper_v4 
// - It uses the vci_mem_cache_v4
// - It uses one vci_xicu, one vci_multi_tty, 
//   and one vci_multi_dma controler per cluster.
// 
// It is build with one single component implementing a cluster:
// The Tsarv4ClusterMmu component is defined in files
// tsarv4_cluster_mmu.* (with * = cpp, h, sd)
//
// The physical address space is 32 bits.
// The number of clusters cannot be larger than 256.
// The number of processors per cluster cannot be larger than 4.
// The parameters must be power of 2.
// - xmax   : number of clusters in a row
// - ymax   : number of clusters in a column
// - nprocs : number of processors per cluster
//
// The peripherals BDEV, FBUF, and the boot BROM
// are in the cluster containing address 0xBFC00000.
// - The nprocs TTY IRQs are connected to IRQ_IN[0] to IRQ_IN[3]
// - The nprocs DMA IRQs are connected to IRQ_IN[4] to IRQ_IN[7]
// - The IOC IRQ is connected to IRQ_IN[8]
// 
// General policy for 32 bits physical address decoding:
// All segments base addresses are multiple of 64 Kbytes
// Therefore the 16 address MSB bits completely define the target: 
// The (x_width + y_width) MSB bits (left aligned) define
// the cluster index, and the 8 LSB bits define the local index:
//      | X_ID  | Y_ID  |---| LADR |     OFFSET          |
//      |x_width|y_width|---|  8   |       16            |
/////////////////////////////////////////////////////////////////////////

#include <systemc>
#include <sys/time.h>
#include <iostream>
#include <sstream>
#include <cstdlib>
#include <cstdarg>
#include <stdint.h>

#include "gdbserver.h"
#include "mapping_table.h"
#include "tsarv4_cluster_mmu.h"
#include "alloc_elems.h"

///////////////////////////////////////////////////
//              OS
///////////////////////////////////////////////////

#define USE_ALMOS 1
#define almos_bootloader_pathname "/Users/alain/soc/tsar-svn-june-2010/softs/almos/bootloader/bin/bootloader-soclib-mipsel.bin" 
#define almos_kernel_pathname "/Users/alain/soc/tsar-svn-june-2010/softs/almos/kernel/bin/kernel-soclib-mipsel.bin@0xbfc10000:D"
#define almos_archinfo_pathname "/Users/alain/soc/tsar-svn-june-2010/softs/almos/arch_bins/arch-info_4_4.bin@0xBFC08000:D"

///////////////////////////////////////////////////
//               Parallelisation
///////////////////////////////////////////////////

#define USE_OPENMP               0
#define OPENMP_THREADS_NR        8

#if USE_OPENMP
#include <omp.h>
#endif

//  cluster index (computed from x,y coordinates)
#define cluster(x,y)    (y + ymax*x)

// flit widths for the DSPIN network
#define cmd_width                40
#define rsp_width                33

// VCI format
#define cell_width               4
#define address_width            32
#define plen_width               8
#define error_width              2
#define clen_width               1
#define rflag_width              1
#define srcid_width              14
#define pktid_width              4
#define trdid_width              4
#define wrplen_width             1

///////////////////////////////////////////////////
//     Parameters default values         
///////////////////////////////////////////////////

#define MESH_XMAX               2
#define MESH_YMAX               2

#define NPROCS                  1
#define XRAM_LATENCY            0

#define MEMC_WAYS               16
#define MEMC_SETS               256

#define L1_IWAYS                4
#define L1_ISETS                64

#define L1_DWAYS                4
#define L1_DSETS                64

#define FBUF_X_SIZE             128
#define FBUF_Y_SIZE             128

#define BDEV_SECTOR_SIZE        128
#define BDEV_IMAGE_NAME         "../../softs/soft_transpose_giet/images.raw"

#define BOOT_SOFT_NAME          "../../softs/soft_transpose_giet/bin.soft"

#define MAX_FROZEN_CYCLES       1000

/////////////////////////////////////////////////////////
//      Physical segments definition
/////////////////////////////////////////////////////////
// There is 3 segments replicated in all clusters:
// - seg_memc   -> MEMC / BASE = 0x**000000     (12 M bytes)
// - seg_icu    -> ICU  / BASE = 0x**F00000
// - seg_dma    -> CDMA / BASE = 0x**F30000
//
// There is 4 specific segments in the "IO" cluster 
// (containing address 0xBF000000)
// - seg_reset  -> BROM / BASE = 0xBFC00000     (1 Mbytes)
// - seg_fbuf   -> FBUF / BASE = 0xBFD00000     (2 M bytes)
// - seg_bdev   -> BDEV / BASE = 0xBFF10000
// - seg_tty    -> MTTY / BASE = 0x**F20000
//
// There is one special segment corresponding to
// the processors in the coherence address space
// - seg_proc   -> PROC / BASE = 0x**B0 to 0xBF
///////////////////////////////////////////////////

// specific segments in "IO" cluster

#define BROM_BASE               0xBFC00000      
#define BROM_SIZE               0x00100000

#define FBUF_BASE               0xBFD00000      
#define FBUF_SIZE               0x00200000

#define BDEV_BASE               0xBFF10000      
#define BDEV_SIZE               0x00000020

#define MTTY_BASE               0xBFF20000      
#define MTTY_SIZE               0x00000040

// replicated segments

#define MEMC_BASE               0x00000000      
#define MEMC_SIZE               0x00C00000

#define XICU_BASE               0x00F00000      
#define XICU_SIZE               0x00001000

#define CDMA_BASE               0x00F30000      
#define CDMA_SIZE               0x00004000

#define PROC_BASE               0x00D00000      
#define PROC_SIZE               0x00000010

////////////////////////////////////////////////////////////////////
//     TGTID definition in direct space
// For all components:  global TGTID = global SRCID = cluster_index
////////////////////////////////////////////////////////////////////

#define MEMC_TGTID               0
#define XICU_TGTID               1
#define CDMA_TGTID               2
#define MTTY_TGTID               3
#define FBUF_TGTID               4
#define BROM_TGTID               5
#define BDEV_TGTID               6

/////////////////////////////////
int _main(int argc, char *argv[])
{
    using namespace sc_core;
    using namespace soclib::caba;
    using namespace soclib::common;
    
    
    char     soft_name[256] = BOOT_SOFT_NAME;     // pathname to binary code
    size_t   ncycles        = 1000000000;         // simulated cycles
    size_t   xmax           = MESH_XMAX;          // number of clusters in a row
    size_t   ymax           = MESH_YMAX;          // number of clusters in a column
    size_t   nprocs         = NPROCS;             // number of processors per cluster
    size_t   xfb            = FBUF_X_SIZE;        // frameBuffer column number
    size_t   yfb            = FBUF_Y_SIZE;        // frameBuffer lines number
    size_t   memc_ways      = MEMC_WAYS;
    size_t   memc_sets      = MEMC_SETS;
    size_t   l1_d_ways      = L1_DWAYS;
    size_t   l1_d_sets      = L1_DSETS;
    size_t   l1_i_ways      = L1_IWAYS;
    size_t   l1_i_sets      = L1_ISETS;
    char     disk_name[256] = BDEV_IMAGE_NAME;    // pathname to the disk image
    size_t   blk_size       = BDEV_SECTOR_SIZE;   // block size (in bytes)
    size_t   xram_latency   = XRAM_LATENCY;       // external RAM latency
    bool     trace_ok       = false;              // trace activated
    size_t   trace_period   = 1;                  // trace period
    uint32_t from_cycle     = 0;                  // debug start cycle
    uint32_t frozen_cycles  = MAX_FROZEN_CYCLES;  // monitoring frozen processor

    ////////////// command line arguments //////////////////////
    if (argc > 1)
    {
        for( int n=1 ; n<argc ; n=n+2 )
        {
            if( (strcmp(argv[n],"-NCYCLES") == 0) && (n+1<argc) )
            {
                ncycles = atoi(argv[n+1]);
            }
            else if( (strcmp(argv[n],"-NPROCS") == 0) && (n+1<argc) )
            {
                nprocs = atoi(argv[n+1]);
                assert( ((nprocs == 1) || (nprocs == 2) || (nprocs == 4)) &&
                        "NPROCS must be equal to 1, 2, or 4");
            }
            else if( (strcmp(argv[n],"-XMAX") == 0) && (n+1<argc) )
            {
                xmax = atoi(argv[n+1]);
                assert( ((xmax == 1) || (xmax == 2) || (xmax == 4) || (xmax == 8) || (xmax == 16)) 
                         && "The XMAX parameter must be 2, 4, 8, or 16" );
            }
            
            else if( (strcmp(argv[n],"-YMAX") == 0) && (n+1<argc) )
            {
                ymax = atoi(argv[n+1]);
                assert( ((ymax == 1) || (ymax == 2) || (ymax == 4) || (ymax == 8) || (ymax == 16)) 
                         && "The YMAX parameter must be 2, 4, 8, or 16" );
            }
            else if( (strcmp(argv[n],"-XFB") == 0) && (n+1<argc) )
            {
                xfb = atoi(argv[n+1]);
            }
            else if( (strcmp(argv[n],"-YFB") == 0) && (n+1<argc) )
            {
                yfb = atoi(argv[n+1]);
            }
            else if( (strcmp(argv[n],"-SOFT") == 0) && (n+1<argc) )
            {
                strcpy(soft_name, argv[n+1]);
            }
            else if( (strcmp(argv[n],"-DISK") == 0) && (n+1<argc) )
            {
                strcpy(disk_name, argv[n+1]);
            }
            else if( (strcmp(argv[n],"-TRACE") == 0) && (n+1<argc) )
            {
                trace_ok = true;
                from_cycle = atoi(argv[n+1]);
            }
            else if((strcmp(argv[n], "-MCWAYS") == 0) && (n+1 < argc))
            {
                memc_ways = atoi(argv[n+1]);
            }
            else if((strcmp(argv[n], "-MCSETS") == 0) && (n+1 < argc))
            {
                memc_sets = atoi(argv[n+1]);
            }
            else if((strcmp(argv[n], "-XLATENCY") == 0) && (n+1 < argc))
            {
                xram_latency = atoi(argv[n+1]);
            }
            else if((strcmp(argv[n], "-FROZEN") == 0) && (n+1 < argc))
            {
                frozen_cycles = atoi(argv[n+1]);
            }
            else if((strcmp(argv[n], "-PERIOD") == 0) && (n+1 < argc))
            {
                trace_period = atoi(argv[n+1]);
            }
            else
            {
                std::cout << "   Arguments on the command line are (key,value) couples." << std::endl;
                std::cout << "   The order is not important." << std::endl;
                std::cout << "   Accepted arguments are :" << std::endl << std::endl;
                std::cout << "     -SOFT pathname_for_embedded_soft" << std::endl;
                std::cout << "     -DISK pathname_for_disk_image" << std::endl;
                std::cout << "     -NCYCLES number_of_simulated_cycles" << std::endl;
                std::cout << "     -NPROCS number_of_processors_per_cluster" << std::endl;
                std::cout << "     -XMAX number_of_clusters_in_a_row" << std::endl;
                std::cout << "     -YMAX number_of_clusters_in_a_column" << std::endl;
                std::cout << "     -TRACE debug_start_cycle" << std::endl;
                std::cout << "     -MCWAYS memory_cache_number_of_ways" << std::endl;
                std::cout << "     -MCSETS memory_cache_number_of_sets" << std::endl;
                std::cout << "     -XLATENCY external_ram_latency_value" << std::endl;
                std::cout << "     -XFB fram_buffer_number_of_pixels" << std::endl;
                std::cout << "     -YFB fram_buffer_number_of_lines" << std::endl;
                std::cout << "     -FROZEN max_number_of_lines" << std::endl;
                std::cout << "     -PERIOD number_of_cycles between trace" << std::endl;
                exit(0);
            }
        }
    }

    std::cout << std::endl;
    std::cout << " - NPROCS      = " << nprocs <<  std::endl;
    std::cout << " - NCLUSTERS   = " << xmax*ymax << std::endl;
    std::cout << " - MAX FROZEN  = " << frozen_cycles << std::endl;
    std::cout << " - MEMC_WAYS   = " << memc_ways << std::endl;
    std::cout << " - MEMC_SETS   = " << memc_sets << std::endl;
    std::cout << " - RAM_LATENCY = " << xram_latency << std::endl;

    std::cout << std::endl;

#if USE_OPENMP
        omp_set_dynamic(false);
        omp_set_num_threads(threads_nr);
        std::cerr << "Built with openmp version " << _OPENMP << std::endl;
#endif

    // Define VCI parameters
    typedef soclib::caba::VciParams<cell_width,
                                    plen_width,
                                    address_width,
                                    error_width,                                   
                                    clen_width,
                                    rflag_width,
                                    srcid_width,
                                    pktid_width,
                                    trdid_width,
                                    wrplen_width> vci_param;

    size_t      cluster_io_index;
    size_t      x_width;
    size_t      y_width;

    if      (xmax == 1) x_width = 0;
    else if (xmax == 2) x_width = 1;
    else if (xmax <= 4) x_width = 2;
    else if (xmax <= 8) x_width = 3;
    else                x_width = 4;

    if      (ymax == 1) y_width = 0;
    else if (ymax == 2) y_width = 1;
    else if (ymax <= 4) y_width = 2;
    else if (ymax <= 8) y_width = 3;
    else                y_width = 4;

    cluster_io_index = 0xBF >> (8 - x_width - y_width);
    
    /////////////////////
    //  Mapping Tables
    /////////////////////

    // direct network
    MappingTable maptabd(address_width, 
                         IntTab(x_width + y_width, 16 - x_width - y_width), 
                         IntTab(x_width + y_width, srcid_width - x_width - y_width), 
                         0x00FF0000);

    for ( size_t x = 0 ; x < xmax ; x++)
    {
        for ( size_t y = 0 ; y < ymax ; y++)
        {
            sc_uint<address_width> offset  = cluster(x,y) << (address_width-x_width-y_width);

            std::ostringstream  sh;
            sh << "d_seg_memc_" << x << "_" << y;
            maptabd.add(Segment(sh.str(), MEMC_BASE+offset, MEMC_SIZE, IntTab(cluster(x,y),MEMC_TGTID), true));

            std::ostringstream  si;
            si << "d_seg_xicu_" << x << "_" << y;
            maptabd.add(Segment(si.str(), XICU_BASE+offset, XICU_SIZE, IntTab(cluster(x,y),XICU_TGTID), false));

            std::ostringstream  sd;
            sd << "d_seg_mdma_" << x << "_" << y;
            maptabd.add(Segment(sd.str(), CDMA_BASE+offset, CDMA_SIZE, IntTab(cluster(x,y),CDMA_TGTID), false));

            if ( cluster(x,y) == cluster_io_index )
            {
              maptabd.add(Segment("d_seg_mtty    ", MTTY_BASE, MTTY_SIZE, IntTab(cluster(x,y),MTTY_TGTID), false));
              maptabd.add(Segment("d_seg_fbuf    ", FBUF_BASE, FBUF_SIZE, IntTab(cluster(x,y),FBUF_TGTID), false));
              maptabd.add(Segment("d_seg_bdev    ", BDEV_BASE, BDEV_SIZE, IntTab(cluster(x,y),BDEV_TGTID), false));
              maptabd.add(Segment("d_seg_brom    ", BROM_BASE, BROM_SIZE, IntTab(cluster(x,y),BROM_TGTID), true));
            }
        }
    }
    std::cout << maptabd << std::endl;

    // coherence network
    // - tgtid_c_proc = srcid_c_proc = local procid
    // - tgtid_c_memc = srcid_c_memc = nprocs
    MappingTable maptabc(address_width, 
                         IntTab(x_width + y_width, 16 - x_width - y_width), 
                         IntTab(x_width + y_width, srcid_width - x_width - y_width), 
                         0x00FF0000);

    for ( size_t x = 0 ; x < xmax ; x++)
    {
        for ( size_t y = 0 ; y < ymax ; y++)
        {
            sc_uint<address_width> offset  = cluster(x,y) << (address_width-x_width-y_width);

            // cleanup requests regarding the memc segment must be routed to the memory cache
            std::ostringstream sh;
            sh << "c_seg_memc_" << x << "_" << y;
            maptabc.add(Segment(sh.str(), MEMC_BASE+offset, MEMC_SIZE, IntTab(cluster(x,y), nprocs), false));

            // cleanup requests regarding the BROM segment are also be routed to the memory cache
            if ( cluster(x,y) == cluster_io_index )
            {
                maptabc.add(Segment("c_seg_brom    ", BROM_BASE, BROM_SIZE, IntTab(cluster(x,y), nprocs), false));
            }

            // update & invalidate requests must be routed to the proper processor
            for ( size_t p = 0 ; p < nprocs ; p++)
            {
                std::ostringstream sp;
                sp << "c_seg_proc_" << x << "_" << y << "_" << p;
                maptabc.add(Segment(sp.str(), PROC_BASE+offset+(p*0x10000), PROC_SIZE, 
                            IntTab(cluster(x,y), p), false, true, IntTab(cluster(x,y), p))); 
            }
        }
    }
    std::cout << maptabc << std::endl;

    // external network
    MappingTable maptabx(address_width, IntTab(1), IntTab(x_width+y_width), 0xF0000000);

    for ( size_t x = 0 ; x < xmax ; x++)
    {
        for ( size_t y = 0 ; y < ymax ; y++)
        { 
            sc_uint<address_width> offset  = cluster(x,y) << (address_width-x_width-y_width);
            std::ostringstream sh;
            sh << "x_seg_memc_" << x << "_" << y;
            maptabx.add(Segment(sh.str(), MEMC_BASE+offset, MEMC_SIZE, IntTab(cluster(x,y)), false));
        }
    }
    std::cout << maptabx << std::endl;

    ////////////////////
    // Signals
    ///////////////////

    sc_clock            signal_clk("clk");
    sc_signal<bool>     signal_resetn("resetn");

    // Horizontal inter-clusters DSPIN signals
    DspinSignals<cmd_width>*** signal_dspin_h_cmd_inc =
      alloc_elems<DspinSignals<cmd_width> >("signal_dspin_h_cmd_inc", xmax-1, ymax, 2);
    DspinSignals<cmd_width>*** signal_dspin_h_cmd_dec =
      alloc_elems<DspinSignals<cmd_width> >("signal_dspin_h_cmd_dec", xmax-1, ymax, 2);
    DspinSignals<rsp_width>*** signal_dspin_h_rsp_inc =
      alloc_elems<DspinSignals<rsp_width> >("signal_dspin_h_rsp_inc", xmax-1, ymax, 2);
    DspinSignals<rsp_width>*** signal_dspin_h_rsp_dec =
      alloc_elems<DspinSignals<rsp_width> >("signal_dspin_h_rsp_dec", xmax-1, ymax, 2);

    // Vertical inter-clusters DSPIN signals
    DspinSignals<cmd_width>*** signal_dspin_v_cmd_inc =
        alloc_elems<DspinSignals<cmd_width> >("signal_dspin_v_cmd_inc", xmax, ymax-1, 2);
    DspinSignals<cmd_width>*** signal_dspin_v_cmd_dec =
        alloc_elems<DspinSignals<cmd_width> >("signal_dspin_v_cmd_dec", xmax, ymax-1, 2);
    DspinSignals<rsp_width>*** signal_dspin_v_rsp_inc =
        alloc_elems<DspinSignals<rsp_width> >("signal_dspin_v_rsp_inc", xmax, ymax-1, 2);
    DspinSignals<rsp_width>*** signal_dspin_v_rsp_dec =
        alloc_elems<DspinSignals<rsp_width> >("signal_dspin_v_rsp_dec", xmax, ymax-1, 2);

    // Mesh boundaries DSPIN signals
    DspinSignals<cmd_width>**** signal_dspin_false_cmd_in =
        alloc_elems<DspinSignals<cmd_width> >("signal_dspin_false_cmd_in", xmax, ymax, 2, 4);
    DspinSignals<cmd_width>**** signal_dspin_false_cmd_out =
        alloc_elems<DspinSignals<cmd_width> >("signal_dspin_false_cmd_out", xmax, ymax, 2, 4);
    DspinSignals<rsp_width>**** signal_dspin_false_rsp_in =
        alloc_elems<DspinSignals<rsp_width> >("signal_dspin_false_rsp_in", xmax, ymax, 2, 4);
    DspinSignals<rsp_width>**** signal_dspin_false_rsp_out =
        alloc_elems<DspinSignals<rsp_width> >("signal_dspin_false_rsp_out", xmax, ymax, 2, 4);


    ////////////////////////////
    //      Components
    ////////////////////////////

#if USE_ALMOS
    soclib::common::Loader loader(almos_bootloader_pathname,
                                  almos_archinfo_pathname,
                                  almos_kernel_pathname);
#else
    soclib::common::Loader loader(soft_name);
#endif

    typedef soclib::common::GdbServer<soclib::common::Mips32ElIss> proc_iss;
    proc_iss::set_loader(loader);

    TsarV4ClusterMmu<vci_param, proc_iss, cmd_width, rsp_width>* clusters[xmax][ymax];

#if USE_OPENMP

#pragma omp parallel
{
#pragma omp for
    for( size_t i = 0 ; i  < (xmax * ymax); i++)
    {
        size_t x = i / ymax;
        size_t y = i % ymax;

#pragma omp critical
        std::ostringstream sc;
        sc << "cluster_" << x << "_" << y;
        clusters[x][y] = new TsarV4ClusterMmu<vci_param, proc_iss, cmd_width, rsp_width>
            (sc.str().c_str(),
             nprocs,
             x,
             y,
             cluster(x,y),
             maptabd,
             maptabc,
             maptabx,
             x_width,
             y_width,
             MEMC_TGTID,
             XICU_TGTID,
             FBUF_TGTID,
             MTTY_TGTID,
             BROM_TGTID,
             BDEV_TGTID,
             CDMA_TGTID,
             memc_ways,
             memc_sets,
             l1_i_ways,
             l1_i_sets,
             l1_d_ways,
             l1_d_sets,
             xram_latency,
             (cluster(x,y) == cluster_io_index),
             xfb,
             yfb,
             disk_name,
             blk_size,
             loader,
             frozen_cycles,
             from_cycle,
             trace_ok and (cluster_io_index == cluster(x,y)) );
        }

#else  // NO OPENMP

    for( size_t x = 0 ; x  < xmax ; x++)
    {
        for( size_t y = 0 ; y < ymax ; y++ )
        {

std::cout << "building cluster_" << x << "_" << y << std::endl;

            std::ostringstream sc;
            sc << "cluster_" << x << "_" << y;
            clusters[x][y] = new TsarV4ClusterMmu<vci_param, proc_iss, cmd_width, rsp_width>
            (sc.str().c_str(),
             nprocs,
             x,
             y,
             cluster(x,y),
             maptabd,
             maptabc,
             maptabx,
             x_width,
             y_width,
             MEMC_TGTID,
             XICU_TGTID,
             FBUF_TGTID,
             MTTY_TGTID,
             BROM_TGTID,
             BDEV_TGTID,
             CDMA_TGTID,
             memc_ways,
             memc_sets,
             l1_i_ways,
             l1_i_sets,
             l1_d_ways,
             l1_d_sets,
             xram_latency,
             (cluster(x,y) == cluster_io_index),
             xfb,
             yfb,
             disk_name,
             blk_size,
             loader,
             frozen_cycles,
             from_cycle,
             trace_ok and (cluster_io_index == cluster(x,y)) );

std::cout << "cluster_" << x << "_" << y << " constructed" << std::endl;

        }
    }
    
#endif  // USE_OPENMP

    ///////////////////////////////////////////////////////////////
    //     Net-list 
    ///////////////////////////////////////////////////////////////

    // Clock & RESET
    for ( size_t x = 0 ; x < (xmax) ; x++ )
    {
        for ( size_t y = 0 ; y < ymax ; y++ )
        {
            clusters[x][y]->p_clk                       (signal_clk);
            clusters[x][y]->p_resetn                    (signal_resetn);
        }
    }

    // Inter Clusters horizontal connections
    if ( xmax > 1 )
    {
        for ( size_t x = 0 ; x < (xmax-1) ; x++ )
        {
            for ( size_t y = 0 ; y < ymax ; y++ )
            {
                for ( size_t k = 0 ; k < 2 ; k++ )
                {
                clusters[x][y]->p_cmd_out[k][EAST]      (signal_dspin_h_cmd_inc[x][y][k]);
                clusters[x+1][y]->p_cmd_in[k][WEST]     (signal_dspin_h_cmd_inc[x][y][k]);
                clusters[x][y]->p_cmd_in[k][EAST]       (signal_dspin_h_cmd_dec[x][y][k]);
                clusters[x+1][y]->p_cmd_out[k][WEST]    (signal_dspin_h_cmd_dec[x][y][k]);
                clusters[x][y]->p_rsp_out[k][EAST]      (signal_dspin_h_rsp_inc[x][y][k]);
                clusters[x+1][y]->p_rsp_in[k][WEST]     (signal_dspin_h_rsp_inc[x][y][k]);
                clusters[x][y]->p_rsp_in[k][EAST]       (signal_dspin_h_rsp_dec[x][y][k]);
                clusters[x+1][y]->p_rsp_out[k][WEST]    (signal_dspin_h_rsp_dec[x][y][k]);
                }
            }
        }
    }
    std::cout << "Horizontal connections established" << std::endl;     

    // Inter Clusters vertical connections
    if ( ymax > 1 )
    {
        for ( size_t y = 0 ; y < (ymax-1) ; y++ )
        {
            for ( size_t x = 0 ; x < xmax ; x++ )
            {
                for ( size_t k = 0 ; k < 2 ; k++ )
                {
                clusters[x][y]->p_cmd_out[k][NORTH]     (signal_dspin_v_cmd_inc[x][y][k]);
                clusters[x][y+1]->p_cmd_in[k][SOUTH]    (signal_dspin_v_cmd_inc[x][y][k]);
                clusters[x][y]->p_cmd_in[k][NORTH]      (signal_dspin_v_cmd_dec[x][y][k]);
                clusters[x][y+1]->p_cmd_out[k][SOUTH]   (signal_dspin_v_cmd_dec[x][y][k]);
                clusters[x][y]->p_rsp_out[k][NORTH]     (signal_dspin_v_rsp_inc[x][y][k]);
                clusters[x][y+1]->p_rsp_in[k][SOUTH]    (signal_dspin_v_rsp_inc[x][y][k]);
                clusters[x][y]->p_rsp_in[k][NORTH]      (signal_dspin_v_rsp_dec[x][y][k]);
                clusters[x][y+1]->p_rsp_out[k][SOUTH]   (signal_dspin_v_rsp_dec[x][y][k]);
                }
            }
        }
    }
    std::cout << "Vertical connections established" << std::endl;

    // East & West boundary cluster connections
    for ( size_t y = 0 ; y < ymax ; y++ )
    {
        for ( size_t k = 0 ; k < 2 ; k++ )
        {
            clusters[0][y]->p_cmd_in[k][WEST]           (signal_dspin_false_cmd_in[0][y][k][WEST]);
            clusters[0][y]->p_cmd_out[k][WEST]          (signal_dspin_false_cmd_out[0][y][k][WEST]);
            clusters[0][y]->p_rsp_in[k][WEST]           (signal_dspin_false_rsp_in[0][y][k][WEST]);
            clusters[0][y]->p_rsp_out[k][WEST]          (signal_dspin_false_rsp_out[0][y][k][WEST]);
          
            clusters[xmax-1][y]->p_cmd_in[k][EAST]      (signal_dspin_false_cmd_in[xmax-1][y][k][EAST]);
            clusters[xmax-1][y]->p_cmd_out[k][EAST]     (signal_dspin_false_cmd_out[xmax-1][y][k][EAST]);
            clusters[xmax-1][y]->p_rsp_in[k][EAST]      (signal_dspin_false_rsp_in[xmax-1][y][k][EAST]);
            clusters[xmax-1][y]->p_rsp_out[k][EAST]     (signal_dspin_false_rsp_out[xmax-1][y][k][EAST]);
        }
    }
    
    // North & South boundary clusters connections
    for ( size_t x = 0 ; x < xmax ; x++ )
    {
        for ( size_t k = 0 ; k < 2 ; k++ )
        {
            clusters[x][0]->p_cmd_in[k][SOUTH]          (signal_dspin_false_cmd_in[x][0][k][SOUTH]);
            clusters[x][0]->p_cmd_out[k][SOUTH]         (signal_dspin_false_cmd_out[x][0][k][SOUTH]);
            clusters[x][0]->p_rsp_in[k][SOUTH]          (signal_dspin_false_rsp_in[x][0][k][SOUTH]);
            clusters[x][0]->p_rsp_out[k][SOUTH]         (signal_dspin_false_rsp_out[x][0][k][SOUTH]);
            
            clusters[x][ymax-1]->p_cmd_in[k][NORTH]     (signal_dspin_false_cmd_in[x][ymax-1][k][NORTH]);
            clusters[x][ymax-1]->p_cmd_out[k][NORTH]    (signal_dspin_false_cmd_out[x][ymax-1][k][NORTH]);
            clusters[x][ymax-1]->p_rsp_in[k][NORTH]     (signal_dspin_false_rsp_in[x][ymax-1][k][NORTH]);
            clusters[x][ymax-1]->p_rsp_out[k][NORTH]    (signal_dspin_false_rsp_out[x][ymax-1][k][NORTH]);
        }
    }
      

    ////////////////////////////////////////////////////////
    //   Simulation
    ///////////////////////////////////////////////////////

    sc_start(sc_core::sc_time(0, SC_NS));
    signal_resetn = false;

    // network boundaries signals
    for(size_t x=0; x<xmax ; x++)
    {
        for(size_t y=0 ; y<ymax ; y++)
        {
            for (size_t k=0; k<2; k++)
            {
                for(size_t a=0; a<4; a++)
                {
                        signal_dspin_false_cmd_in[x][y][k][a].write = false;
                        signal_dspin_false_cmd_in[x][y][k][a].read = true;
                        signal_dspin_false_cmd_out[x][y][k][a].write = false;
                        signal_dspin_false_cmd_out[x][y][k][a].read = true;

                        signal_dspin_false_rsp_in[x][y][k][a].write = false;
                        signal_dspin_false_rsp_in[x][y][k][a].read = true;
                        signal_dspin_false_rsp_out[x][y][k][a].write = false;
                        signal_dspin_false_rsp_out[x][y][k][a].read = true;
                }
            }
        }
    }

    sc_start(sc_core::sc_time(1, SC_NS));
    signal_resetn = true;

    for ( size_t n=1 ; n<ncycles ; n++)
    {
        if ( trace_ok and (n > from_cycle) and (n%trace_period == 0) )
        {
            std::cout << "****************** cycle " << std::dec << n ;
            std::cout << " ************************************************" << std::endl;

            // components cluster 00 /////////////////////
//            clusters[0][0]->proc[0]->print_trace();
//            clusters[0][0]->memc->print_trace();

            // signals cluster 00 ////////////////////////
//            clusters[0][0]->signal_vci_ini_d_proc[0].print_trace("proc_0_0_0_ini_d");
//            clusters[0][0]->signal_vci_ini_c_proc[0].print_trace("proc_0_0_0_ini_c");
//            clusters[0][0]->signal_vci_tgt_c_proc[0].print_trace("proc_0_0_0_tgt_c");
//            clusters[0][0]->signal_vci_xram.print_trace("memc_0_0_xram");

            // components cluster 01 /////////////////////
//            clusters[0][1]->proc[0]->print_trace();
//            clusters[0][1]->memc->print_trace();

            // signals cluster 01 ///////////////////////
//            clusters[0][1]->signal_vci_ini_d_proc[0].print_trace("proc_0_1_0_ini_d");
//            clusters[0][1]->signal_vci_ini_c_proc[0].print_trace("proc_0_1_0_ini_c");
//            clusters[0][1]->signal_vci_tgt_c_proc[0].print_trace("proc_0_1_0_tgt_c");
//            clusters[0][1]->signal_vci_xram.print_trace("memc_0_1_xram");

            // components cluster 10 ////////////////////
            clusters[1][0]->proc[0]->print_trace(1);
            clusters[1][0]->memc->print_trace();
//            clusters[1][0]->bdev->print_trace();
//            clusters[1][0]->mdma->print_trace();

            // signals cluster 10 ///////////////////////
            clusters[1][0]->signal_vci_ini_d_proc[0].print_trace("proc_1_0_0_ini_d");
//            clusters[1][0]->signal_vci_ini_c_proc[0].print_trace("proc_1_0_0_ini_c");
//            clusters[1][0]->signal_vci_tgt_c_proc[0].print_trace("proc_1_0_0_tgt_c");
            clusters[1][0]->signal_vci_tgt_d_memc.print_trace("memc_1_0_tgt_d  ");
//            clusters[1][0]->signal_vci_ini_c_memc.print_trace("memc_1_0_ini_c  ");
//            clusters[1][0]->signal_vci_tgt_c_memc.print_trace("memc_1_0_tgt_c  ");
//            clusters[1][0]->signal_vci_tgt_d_bdev.print_trace("bdev_1_0_tgt_d  ");
//            clusters[1][0]->signal_vci_ini_d_bdev.print_trace("bdev_1_0_ini_d  ");
//            clusters[1][0]->signal_vci_tgt_d_mdma.print_trace("mdma_1_0_tgt_d  ");
//            clusters[1][0]->signal_vci_ini_d_mdma.print_trace("mdma_1_0_ini_d  ");
            clusters[1][0]->signal_vci_tgt_d_mtty.print_trace("mtty_1_0_tgt_d  ");
            clusters[1][0]->signal_vci_xram.print_trace("memc_1_0_xram");
  
            // components cluster 11 /////////////////////
//            clusters[1][1]->proc[0]->print_trace();
//            clusters[1][1]->memc->print_trace();
            
            // signals cluster 11 ////////////////////////
//            clusters[1][1]->signal_vci_ini_d_proc[0].print_trace("proc_1_1_0_ini_d");
//            clusters[1][1]->signal_vci_ini_c_proc[0].print_trace("proc_1_1_0_ini_c");
//            clusters[1][1]->signal_vci_tgt_c_proc[0].print_trace("proc_1_1_0_tgt_c");
//            clusters[1][1]->signal_vci_xram.print_trace("memc_1_1_xram");
        }

        sc_start(sc_core::sc_time(1, SC_NS));
    }
    return EXIT_SUCCESS;
}

int sc_main (int argc, char *argv[])
{
        try {
                return _main(argc, argv);
        } catch (std::exception &e) {
                std::cout << e.what() << std::endl;
        } catch (...) {
                std::cout << "Unknown exception occured" << std::endl;
                throw;
        }
        return 1;
}