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////////////////////////////////////////////////////////////////////////////////

//

// Filename:    sdramscope.cpp

//

// Project:     XuLA2-LX25 SoC based upon the ZipCPU

//

// Purpose:     

//

// Creator:     Dan Gisselquist, Ph.D.

//              Gisselquist Technology, LLC

//

////////////////////////////////////////////////////////////////////////////////

//

// Copyright (C) 2015-2016, Gisselquist Technology, LLC

//

// This program is free software (firmware): you can redistribute it and/or

// modify it under the terms of  the GNU General Public License as published

// by the Free Software Foundation, either version 3 of the License, or (at

// your option) any later version.

//

// This program is distributed in the hope that it will be useful, but WITHOUT

// ANY WARRANTY; without even the implied warranty of MERCHANTIBILITY or

// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

// for more details.

//

// You should have received a copy of the GNU General Public License along

// with this program.  (It's in the $(ROOT)/doc directory, run make with no

// target there if the PDF file isn't present.)  If not, see

// <http://www.gnu.org/licenses/> for a copy.

//

// License:     GPL, v3, as defined and found on www.gnu.org,

//              http://www.gnu.org/licenses/gpl.html

//

//

////////////////////////////////////////////////////////////////////////////////

//

//

#include <stdio.h>

#include <stdlib.h>

#include <unistd.h>

#include <strings.h>

#include <ctype.h>

#include <string.h>

#include <signal.h>

#include <assert.h>

#include "port.h"

#include "regdefs.h"

#include "scopecls.h"

#define WBSCOPE         R_RAMSCOPE

#define WBSCOPEDATA     R_RAMSCOPED

FPGA    *m_fpga;

void    closeup(int v) {

        m_fpga->kill();

        exit(0);

}

class   RAMSCOPE : public SCOPE {

public:

        RAMSCOPE(FPGA *fpga, unsigned addr, bool vecread)

                : SCOPE(fpga, addr, false, false) {};

        ~RAMSCOPE(void) {}

        virtual void    decode(DEVBUS::BUSW val) const {

/*

                int     ras, cas, wen, stb, we, stall, ack, dqs, dm, oe, addr,

                        odat, idat, wdbg, cmd;

                static const char *cmdstr[] = { "[MRSET]", "[REFRESH]",

                                "[PRECHARGE]", "[ACTIVATE]", "[WRITE]",

                                "[READ]", "[ZQS]", "[NOOP]"

                        };

                ras      = (val>>31)&1;

                cas      = (val>>30)&1;

                wen      = (val>>29)&1;

                stb      = (val>>28)&1;

                we       = (val>>27)&1;

                stall    = (val>>26)&1;

                ack      = (val>>25)&1;

                dqs      = (val>>24)&1;

                dm       = (val>>23)&1;

                oe       = (val>>22)&1;

                addr     = (val>>20)&3;

                odat     = (val>>14)&63;

                idat      = (val>>8)&63;

                wdbg      = (val    )&0xff;

                cmd = (ras<<2)|(cas<<1)|wen;

                printf("%s%s%s%s %s%s%s %x %2xO %2xI %4xW %d%d%d%s",

                        (stb)?"S":" ",

                        (we)?"W":"R",

                        (stall)?"S":" ",

                        (ack)?"AK":"  ",

                        //

                        dqs?"D":" ",dm?"M":" ",oe?"W":"z",

                        addr, odat, idat, wdbg,

                        ras,cas,wen,

                        cmdstr[cmd]);

*/

                int     stb, stall, ack, err, head, tail, rid,

                        arvalid, arready, awvalid, awready, wvalid, wready,

                        rvalid, bvalid;

                stb      = (val>>31)&1;

                stall    = (val>>30)&1;

                ack      = (val>>29)&1;

                err      = (val>>28)&1;

                head     = (val>>22)&0x03f;

                tail     = (val>>16)&0x03f;

                rid      = (val>>10)&0x03f;

                arvalid  = (val>> 9)&1;

                arready  = (val>> 8)&1;

                awvalid  = (val>> 7)&1;

                awready  = (val>> 6)&1;

                wvalid   = (val>> 5)&1;

                wready   = (val>> 4)&1;

                rvalid   = (val>> 3)&1;

                bvalid   = (val>> 2)&1;

                printf("%s %s %s %s ", (stb)?"STB":"   ", (stall)?"STL":"   ",

                        (ack)?"ACK":"   ", (err)?"ERR":"   ");

                printf("%2x:%2x AR[%c%c] AW[%c%c] W[%c%c] ", head, tail,

                        (arvalid)?'V':' ', (arready)?'R':' ',

                        (awvalid)?'V':' ', (awready)?'R':' ',

                        (wvalid)?'V':' ', (wready)?'R':' ');

                if (rvalid)

                        printf("RV[%2x] %c", rid, bvalid?'B':' ');

                else if (bvalid)

                        printf("BV[%2x]", rid);

        }

};

int main(int argc, char **argv) {

        int     skp=0, port = FPGAPORT;

        bool    use_usb = false;

        skp=1;

        for(int argn=0; argn<argc-skp; argn++) {

                if (argv[argn+skp][0] == '-') {

                        if (argv[argn+skp][1] == 'u')

                                use_usb = true;

                        else if (argv[argn+skp][1] == 'p') {

                                use_usb = false;

                                if (isdigit(argv[argn+skp][2]))

                                        port = atoi(&argv[argn+skp][2]);

                        }

                        skp++; argn--;

                } else

                        argv[argn] = argv[argn+skp];

        } argc -= skp;

        FPGAOPEN(m_fpga);

        signal(SIGSTOP, closeup);

        signal(SIGHUP, closeup);

        RAMSCOPE *scope = new RAMSCOPE(m_fpga, WBSCOPE, false);

        if (!scope->ready()) {

                printf("Scope is not yet ready:\n");

                scope->decode_control();

        } else

                scope->read();

        delete  m_fpga;

}