/*****************************************************************************************
 Copyright (c) 2002-2004 The UbixOS Project
 All rights reserved.

 Redistribution and use in source and binary forms, with or without modification, are
 permitted provided that the following conditions are met:

 Redistributions of source code must retain the above copyright notice, this list of
 conditions, the following disclaimer and the list of authors.  Redistributions in binary
 form must reproduce the above copyright notice, this list of conditions, the following
 disclaimer and the list of authors in the documentation and/or other materials provided
 with the distribution. Neither the name of the UbixOS Project nor the names of its
 contributors may be used to endorse or promote products derived from this software
 without specific prior written permission.

 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
 EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
 THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
 OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
 TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 $Id$

*****************************************************************************************/

#ifndef _VMM_H
#define _VMM_H

#include <types.h>

#define VMM_PAGECOW                 0x00000200
#define VMM_MEMAVAIL                         1
#define VMM_MEMNOTAVAIL                      2
#define VMM_ID                              -3
#define VMM_PARENTPAGEDIRADDR       0x00100000
#define VMM_TABLESBASEADDR          0xBFC00000
#define VMM_PAGELENGTH              0x00000400
#define VMM_PAGESIZE                      4096
#define VMM_PAGEENTRIES       (VMM_PAGESIZE/4)




typedef struct {
  uInt32  pageAddr;
  uInt16 status;
  uInt16 reserved;
  pid_t  pid;
  int    cowCounter;
  } mMap;

void   vmm_freeProcessPages(pidType);
int    vmm_adjustCowCounter(uInt32,int);
int    vmm_freePage(uInt32);
uInt32 vmm_findFreePage(pidType);
int    vmm_buildMemoryMap();
int    vmm_init();

#endif

/***
 END
 ***/