verif/env/siu/vera/monitors/siu_l2_mon.vr

// ========== Copyright Header Begin ==========================================
//
// OpenSPARC T2 Processor File: siu_l2_mon.vr
// Copyright (C) 1995-2007 Sun Microsystems, Inc. All Rights Reserved
// 4150 Network Circle, Santa Clara, California 95054, U.S.A.
//
// * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; version 2 of the License.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY 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; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//
// For the avoidance of doubt, and except that if any non-GPL license
// choice is available it will apply instead, Sun elects to use only
// the General Public License version 2 (GPLv2) at this time for any
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// ========== Copyright Header End ============================================
#include "siumon.if.vrh"
#include "siumon_ports_binds.vrh"
#include "std_display_class.vrh"
#include "siu_l2_packet.vrh"
#include "siu_monitor.vrh"

class siu_l2_monitor {
        l2_mon_port monitor;

        Siu_L2_Packet snd_packet;
        Siu_L2_Packet rec_packet;
        integer snd_mbox, rec_mbox;

        StandardDisplay dbg;
        string myname;
        integer myid;

        task new (l2_mon_port monitor, integer snd_mbox, integer rec_mbox, integer myid, StandardDisplay dbg);

        task monitor_l2_send ();
        task monitor_l2_recv ();

        function integer get_send_pkt(Cycle_Mode mode, integer cycle);
        function integer check_send(Cycle_Mode mode);
        function integer get_recv_pkt(Cycle_Mode mode, integer cycle);
        function integer check_recv(Cycle_Mode mode);
}

task siu_l2_monitor::new(l2_mon_port monitor, integer snd_mbox, integer rec_mbox, integer myid, StandardDisplay dbg)
{
        this.monitor = monitor;

        snd_packet = new(RDD, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
        rec_packet = new(RDD, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);

        this.dbg = dbg;
        myname = "siu-l2";
        this.myid = myid;
        this.snd_mbox = snd_mbox;
        this.rec_mbox = rec_mbox;

        dbg.dispmon(myname, MON_NORMAL, psprintf ("siu-l2 monitor [%1d] ready", myid));

        fork { monitor_l2_send(); } join none
        fork { monitor_l2_recv(); } join none
}

task siu_l2_monitor::monitor_l2_recv()
{
Siu_L2_Packet packet;
integer i, data_cycles;
integer fail, result, temp;

        while (1)
        {
                @(posedge monitor.$clk);
                if (monitor.$req_vld == 1'b0) {
                   if (monitor.$dbg_req !== 2'b00)
                      dbg.dispmon(myname, MON_ERR, psprintf ("l2%1d recv packet dbg_req wrong when no req", myid));
                }
                else
                if (monitor.$req_vld === 1'b1)
                {
                        data_cycles = 0;
                        fail = 0;
                        temp = 0;

                        // header
                        result = get_recv_pkt(HEADER_C, 1);
                        fail = check_recv(HEADER_C);
                        case (monitor.$req[26:24]) {
                                3'b100: data_cycles = 16;
                                3'b010: data_cycles = 2;
                                3'b001: data_cycles = 2;
                                default:
                                dbg.dispmon(myname, MON_ERR, psprintf ("l2%1d recv packet type unknown", myid));
                        }

                        dbg.dispmon(myname, MON_NORMAL, psprintf ("l2%1d recv pkt=%x ", myid,  rec_packet.id));
                        case (monitor.$req[26:24]) {
                                3'b100: if (monitor.$dbg_req != 2'b10)
                                           dbg.dispmon(myname, MON_ERR, psprintf ("l2%1d recv packet dbg_req wrong for WRI", myid));
                                3'b010: if (monitor.$dbg_req != 2'b11)
                                           dbg.dispmon(myname, MON_ERR, psprintf ("l2%1d recv packet dbg_req wrong for WR8", myid));
                                3'b001: if (monitor.$dbg_req != 2'b01)
                                           dbg.dispmon(myname, MON_ERR, psprintf ("l2%1d recv packet dbg_req wrong for RDD", myid));
                                default:
                                dbg.dispmon(myname, MON_ERR, psprintf ("l2%1d recv packet type wrong", myid));
                        }

                        // addr cycles
                        @(posedge monitor.$clk);
                        result = get_recv_pkt(ADDR_C, 1);
                        fail = check_recv(ADDR_C);
                        if (monitor.$dbg_req != 2'b00)
                           dbg.dispmon(myname, MON_ERR, psprintf ("l2%1d recv packet dbg_req wrong at addr cycle", myid));

                        // data cycles
                        for (i=0; i<data_cycles; i++)
                        {
                                @(posedge monitor.$clk);
                                result = get_recv_pkt(DATA_C, i);
                                temp = check_recv(DATA_C);
                                fail += temp;
                                if (monitor.$dbg_req != 2'b00)
                                   dbg.dispmon(myname, MON_ERR, psprintf ("l2%1d recv packet dbg_req wrong at data cycle", myid));
                        }

                        dbg.dispmon(myname, MON_NORMAL, psprintf ("l2%1d recv pa=%x", myid, rec_packet.pa));

                        if (fail != 0)
                          dbg.dispmon(myname, MON_ERR, psprintf ("l2%1d recv pkt=%x protocol fail!", myid, rec_packet.id));
                        else
                                mailbox_put(rec_mbox, rec_packet);
                }
        }
}

task siu_l2_monitor::monitor_l2_send()
{
integer i, result, fail, temp, data_cycles;

        while (1)
        {
                @(posedge monitor.$clk);
                if (monitor.$ctag_vld === 1'b1)
                {
                        fail = 0;
                        temp = 0;

                        result = get_send_pkt(HEADER_C, 1);
                        fail = check_send(HEADER_C);

                        dbg.dispmon(myname, MON_NORMAL, psprintf ("l2%1d send pkt=%x ", myid, snd_packet.id));

                        if (monitor.$data[16] === 1'b1)
                                data_cycles = 16;
                        if (monitor.$data[16] === 1'b0)
                                data_cycles = 0;

                        for (i=0; i<data_cycles; i++)
                        {
                                @(posedge monitor.$clk);
                                result = get_send_pkt(DATA_C, i);
                                temp = check_send(DATA_C);
                                fail += temp;
                        }

                        if (fail != 0)
                          dbg.dispmon(myname, MON_ERR, psprintf ("l2%1d send pkt=%x protocol fail!", myid, snd_packet.id));
                        else
                                mailbox_put(snd_mbox, snd_packet);
                }
        }
}

function integer siu_l2_monitor::get_recv_pkt(Cycle_Mode mode, integer cycle)
{

        if (mode == HEADER_C)
        {
                rec_packet.bypass = ~monitor.$req[30];
                rec_packet.posted = monitor.$req[29];
                rec_packet.ue = monitor.$req[28];
                rec_packet.source = monitor.$req[27];
                case (monitor.$req[26:24]) {
                        3'b100: rec_packet.type = WRI;
                        3'b010: rec_packet.type = WRM;
                        3'b001: rec_packet.type = RDD;
                        default:
                        dbg.dispmon(myname, MON_ERR, psprintf ("l2%1d recv packet type unknown", myid));
                }
                if (monitor.$req[31] === 1'b1)
                {
                        if (rec_packet.type == WRM) rec_packet.type = JWR;
                        if (rec_packet.type == RDD) rec_packet.type = JRD;
                }
                rec_packet.id = monitor.$req[23:8];
                if (rec_packet.type == WRM)
                        rec_packet.byte_en = monitor.$req[15:8];
                rec_packet.pa[39:32] = monitor.$req[7:0];
        }
        if (mode == ADDR_C)
        {
                rec_packet.pa[31:0] = monitor.$req;
        }
        if (mode == DATA_C)
        {
                integer index = cycle/2;

                if (cycle & 1 == 0)
                        rec_packet.data[index] = monitor.$req;
                else
                        rec_packet.data[index] = {monitor.$req , rec_packet.data[index][31:0]};
        }
}

function integer siu_l2_monitor::check_send(Cycle_Mode mode)
{
        integer fail = 0;

        if (mode == HEADER_C)
        {
        }
        if (mode == DATA_C)
        {
        }

        check_send = fail;
}

function integer siu_l2_monitor::get_send_pkt(Cycle_Mode mode, integer cycle)
{
        if (mode == HEADER_C)
        {
                snd_packet.bypass = ~monitor.$data[23];
                snd_packet.posted = monitor.$data[22];
                snd_packet.ue = monitor.$data[21];
                snd_packet.source = monitor.$data[20];
                snd_packet.id = monitor.$data[15:0];
                if (monitor.$data[31] === 1'b1)
                {
                        if (monitor.$data[16] === 1'b1)
                                snd_packet.type = JRD;
                        else
                                snd_packet.type = JWR;
                }
                else
                {
                        if (monitor.$data[16] === 1'b1)
                                snd_packet.type = RDD;
                        else
                                snd_packet.type = WRI;
                }
        }
        if (mode == DATA_C)
        {
                integer index = cycle/2;

                //if (cycle & 1 == 0)
                if (cycle % 2 == 0)
                        snd_packet.data[index] = monitor.$data;
                else
                {
                        snd_packet.data[index] = {snd_packet.data[index][31:0], monitor.$data};
                        if (snd_packet.type == RDD)
                        dbg.dispmon(myname, MON_NORMAL, psprintf ("l2%1d send pkt=%x  data=%x", myid, snd_packet.id, snd_packet.data[index]));
                }

        }
}

function integer siu_l2_monitor::check_recv(Cycle_Mode mode)
{
        integer fail = 0;

        if (mode == HEADER_C)
        {
        }
        if (mode == DATA_C)
        {
        }

        check_recv = fail;
}