/*****************************************************************************************
 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,
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 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 <ubixos/types.h>
#include <ubixos/spinlock.h>
#include <vmm/paging.h>

#define memAvail     1
#define memNotavail  2
#define vmmID       -3
#define vmmMemoryMapAddr 0xE6667000

typedef struct _mMap mMap;
struct _mMap
{
	uInt32	pageAddr;
	uInt32  physicalAddr;
	uInt16	status;
	uInt16	reserved;
	pid_t		pid;
	int		cowCounter;
	mMap 		*First;
	mMap 		*Last;
	mMap 		*Next;
	mMap 		*Previous;
};


extern int numPages;
extern mMap *vmmMemoryMap;

int vmm_init();
int vmmMemMapInit();
int countMemory();
uInt32 vmmFindFreePage(pidType pid);
int freePage(uInt32 pageAddr);
int adjustCowCounter(uInt32 baseAddr,int adjustment);
void vmmFreeProcessPages(pidType pid);


#endif

/***
 $Log$
 Revision 1.13  2005/08/10 11:34:53  fsdfs
 fixed a compiler error.

 Revision 1.12  2005/08/10 09:47:41  fsdfs
 updates + kmalloc() and kfree() stubs

 Revision 1.11  2005/08/10 08:09:17  fsdfs
 the new memory management suite is located in sys/mm now.

 heres the idea. basically what we are doing is allocating every bit
 of physical memory available to us and flagging them as used. when
 we create virtual memory, we simply set the pageAddr to the address
 of the virtual address, and leave the physicalAddr property to
 it's respective physical location in RAM.

 Revision 1.10  2005/08/10 07:07:03  fsdfs
 vmm_pageFault2() implemented

 Revision 1.9  2005/08/10 06:01:59  fsdfs
 cleaned up dependencies. rewrote vmmCopyVirtualSpace. does not compile
 CVSn: ----------------------------------------------------------------------

 Revision 1.8  2005/08/10 04:35:03  fsdfs
 updates. gcc is still barking at me for adding new items to the headers.

 Revision 1.7  2005/08/10 04:14:04  fsdfs
 reworking memory management and WTF is with all the errors in the headers
 it won't let me add anything!?

 Revision 1.6  2004/07/21 17:39:04  reddawg
 removed device

 Revision 1.5  2004/07/19 02:08:28  reddawg
 Cleaned out the rest of debuging code also temporarily disabled the ip stack to improve boot time

 Revision 1.4  2004/07/09 12:18:19  reddawg
 Updating Initialization Procedures

 Revision 1.3  2004/05/21 15:21:04  reddawg
 Cleaned up


 END
 ***/
