paging.h

/**************************************************************************************
 Copyright (c) 2002 The UbixOS Project
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 $Id$

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

#ifndef _PAGING_H
#define _PAGING_H

#include <ubixos/types.h>

#define pageLength        0x00000400
#define pageSize          4096
#define pageEntries       (pageSize/4)
#define pagePresent       0x00000001
#define pageWrite         0x00000002
#define pageUser          0x00000004
#define pageCow           0x00000200
#define pageStack         0x00000400
#define pageDefault       (pagePresent|pageWrite|pageUser)
#define kernelPageDefault (pagePresent|pageWrite)
#define tablesBaseAddress 0xBFC00000
#define parentPageDirAddr 0x100000

int vmmPagingInit();
int vmmClearVirtualPage(uInt32 pageAddr);
int vmmRemapPage(uInt32,uInt32);
void vmmUnmapPage(uInt32,int);
void vmmUnmapPages(void *,uInt32);
void vmmSetPageAttribute(uInt32,int);
void *vmmMapFromTask(pidType,void *,uInt32);
void *vmmCopyVirtualSpace(pidType);
void *vmmGetFreePage(pidType);
void *vmmGetFreeKernelPage(pidType pid,uInt16 count);
void *vmmGetPhysicalAddr(uInt32);
void *vmmCreateVirtualSpace(pidType);
void *vmmGetFreeVirtualPage(pidType,int);
void vmmPageFault();
void _vmmPageFault();

extern uInt32 *kernelPageDirectory;

#endif

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