legion/src/devices/mem_bus/libgeneric/device_support.c

/*
* ========== Copyright Header Begin ==========================================
*
* OpenSPARC T2 Processor File: device_support.c
* Copyright (c) 2006 Sun Microsystems, Inc.  All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES.
*
* The above named program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License version 2 as published by the Free Software Foundation.
*
* The above named 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 work; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
*
* ========== Copyright Header End ============================================
*/
/*
 * This is a set of generic support functions for basic devices.
 */

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <time.h>

#include "basics.h"
#include "allocate.h"
#include "lexer.h"
#include "simcore.h"
#include "config.h"
#include "dumpinfo.h"
#include "fatal.h"
#include "device.h"


/*
 * For devices that have no cacheable address space areas
 * use this function instead of declaring it for every device.
 *
 * The cacheable function is supposed to provide the following:
 *
 * Returns the extent of the linear cacheable block
 * starting at offset, and a pointer to the state block
 *
 * Note: if writing to the block is supposed to have a
 * device side effect (e.g. device reg) then this
 * function is supposed to return 0.
 */

tpaddr_t generic_device_non_cacheable(
        config_addr_t * config_addrp,
        dev_access_t    type,
        tpaddr_t        offset,
        uint8_t **      blockp)
{
        return ((tpaddr_t)0);   /* no cacheable memory at all */
}