/* vmBaseArch32Lib.c - VM (bundled) library for PentiumPro/2/3/4 32 bit mode *//* Copyright 2002 Wind River Systems, Inc. */#include "copyright_wrs.h"/*modification history--------------------01a,12jun02,hdn  written*//*DESCRIPTION:vmBaseArch32Lib.c provides the virtual memory mapping and virtual addresstranslation that works with the bundled VM library.It provides 2 routines that are linked in when INCLUDE_MMU_BASIC and INCLUDE_MMU_P6_32BIT are both defined in the BSP.*//* includes */#include "vxWorks.h"#include "errno.h"#include "mmuLib.h"#include "private/vmLibP.h"#include "arch/i86/mmuPro32Lib.h"/* imports */IMPORT VM_CONTEXT *	currentContext;		/* vmBaseLib.c */IMPORT MMU_LIB_FUNCS	mmuLibFuncs;		/* mmuLib.c *//* defines */#define NOT_PAGE_ALIGNED(addr)	(((UINT)(addr)) & ((UINT)pageSize - 1))#define MMU_PAGE_MAP		(*(mmuLibFuncs.mmuPageMap))#define MMU_TRANSLATE		(*(mmuLibFuncs.mmuTranslate))/****************************************************************************** vmBaseArch32LibInit - initialize the arch specific bundled VM library** This routine links the arch specific bundled VM library into the VxWorks * system.  It is called automatically when \%INCLUDE_MMU_BASIC and * \%INCLUDE_MMU_P6_32BIT are both defined in the BSP.** RETURNS: N/A*/void vmBaseArch32LibInit (void)    {    } /****************************************************************************** vmBaseArch32Map - map 32bit physical to the 32bit virtual memory** vmBaseArch32Map maps 32bit physical pages to 32bit virtual space then* sets the specified state.** RETURNS: OK, or ERROR if virtAddr or physical page addresses are not on* page boundaries, len is not a multiple of page size, or mapping failed.*/STATUS vmBaseArch32Map     (    void * virtAddr, 		/* 32bit virtual address */    void * physAddr, 		/* 36bit physical address */    UINT32 stateMask,		/* state mask */    UINT32 state,		/* state */    UINT32 len			/* length */    )    {    INT32 pageSize      = vmBasePageSizeGet ();    INT8 * thisVirtPage = (INT8 *) virtAddr;    INT8 * thisPhysPage = (INT8 *) physAddr;    FAST UINT32 numBytesProcessed = 0;    STATUS retVal	= OK;    if (!vmLibInfo.vmBaseLibInstalled)	return (ERROR);    if ((NOT_PAGE_ALIGNED (thisVirtPage)) ||        (NOT_PAGE_ALIGNED (thisPhysPage)) ||        (NOT_PAGE_ALIGNED (len)))	{	errno = S_vmLib_NOT_PAGE_ALIGNED;        return (ERROR); 	}    semTake (&currentContext->sem, WAIT_FOREVER);    while (numBytesProcessed < len)	{	if (MMU_PAGE_MAP (currentContext->mmuTransTbl,			  thisVirtPage, thisPhysPage) != OK)	    {	    retVal = ERROR;	    break;	    }	if (vmBaseStateSet (currentContext, thisVirtPage, 			    pageSize, stateMask, state) != OK)	    {	    retVal = ERROR;	    break;	    }	thisVirtPage += pageSize;	thisPhysPage += pageSize;	numBytesProcessed += pageSize;	}    semGive (&currentContext->sem);    return (retVal);    }/****************************************************************************** vmBaseArch32Translate - translate a 32bit virtual address to a 32bit physical address** vmBaseArch32Translate may be used to retrieve the mapping information * for a virtual address from the page translation tables.  If the given * virtual address has never been mapped, either the returned status will* be ERROR, or, the returned status will be OK, but the returned physical* address will be -1.* If context is specified as NULL, the current context is used.* This routine is callable from interrupt level.** RETURNS: OK, or validation failed, or translation failed.*/STATUS vmBaseArch32Translate     (    void *  virtAddr, 		/* virtual address */    void ** physAddr		/* place to put result */    )    {    STATUS retVal;    if (!vmLibInfo.vmBaseLibInstalled)	return (ERROR);    retVal = MMU_TRANSLATE (currentContext->mmuTransTbl, virtAddr, physAddr);    return (retVal);    }