Initial commit of OpenSPARC T2 design and verification files.

[OpenSPARC-T2-DV] / verif / env / niu / vera / niu_pio / vega_shadow_class.vr

// ========== Copyright Header Begin ==========================================
// 
// OpenSPARC T2 Processor File: vega_shadow_class.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
// 
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// 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 "neptune_memory_map.vri"
#include "mac_shadow_class.vrh"
#include "xmac_shadow_class.vrh"


class shadow_cl {
 mac_shadow_cl  mac_shadow_class[4];
 xmac_shadow_cl xmac_shadow_class[4];


 task new() {
   integer i;
   for(i = 0;i<2;i++){
     xmac_shadow_class[i] = new(i);
   }
       
}

// get_data
// The user provides a 33 bit address.  If the register
// corresponding to the address does not exist in the shadow
// space, then the data_valid bit will be set to zero.
// Otherwise, the data and mask corresponding to the address
// will be provided to the user.
//
task get_data (bit [32:0] addr, var bit [31:0] data,
        var bit [31:0] data_mask, var bit data_valid) {
 bit [32:0] addr1;
integer port_id;

 addr1 = {1'b0,addr[31:0]};
 case (addr1[31:0] & ADDRESS_RANGE_MASK) {
   MAC_ADDRESS_RANGE : {
     mac_shadow_class[port_id].get_data(addr1, data, data_mask, data_valid);
     xmac_shadow_class[port_id].get_data(addr1, data, data_mask, data_valid);
     }

   default : {
     data_valid = 0;
     }
  }  // end of case
}    // end of task get_data

// put_data
// The user provides a 33 bit address and 32 bit data.
// If the address exists in the shadow space then the
// data is updated.  If the address does not exist, then
// it is ignored -- no error message results from attempting
// to updated non-existant locations.
//
task put_data (bit [32:0] addr, bit [31:0] data) {
 bit [32:0] addr1;
integer port_id;

 addr1 = {1'b0,addr[31:0]};
 case (addr1[31:0] & ADDRESS_RANGE_MASK) {
   MAC_ADDRESS_RANGE : {
     mac_shadow_class[port_id].put_data(addr1, data);
     xmac_shadow_class[port_id].put_data(addr1, data);
     }

  }  // end of case
}    // end of task put_data

}    // end of class