env.h

Lido PXA270平台开发板的最新BSP,包括源代码

/*!****************************************************************************
@File			env.h

@Title			Environment Support

@Author			Imagination Technologies

@date   		14 May 2003
 
@Copyright     	Copyright 2003-2004 by Imagination Technologies Limited.
                All rights reserved. No part of this software, either
                material or conceptual may be copied or distributed,
                transmitted, transcribed, stored in a retrieval system
                or translated into any human or computer language in any
                form by any means, electronic, mechanical, manual or
                other-wise, or disclosed to third parties without the
                express written permission of Imagination Technologies
                Limited, Unit 8, HomePark Industrial Estate,
                King's Langley, Hertfordshire, WD4 8LZ, U.K.

@Platform		all

@Description	Environment Support

@DoxygenVer		

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

/******************************************************************************
Modifications :-

$Log: env.h $
*****************************************************************************/
#ifndef _ENV_H_
#define _ENV_H_

#include "img_defs.h"

#if defined (__cplusplus)
extern "C" {
#endif


/*!
******************************************************************************

 @Function	ENV_CpuVAddrToCpuPAddr
 
 @Description 
 
 Retreive the cpu physical address which corresponds to a cpu virtual address.
 
 @Input    CpuVAddr - cpu virtual address

 @Return   cpu physical address.

******************************************************************************/
IMG_CPU_PHYADDR
ENV_CpuVAddrToCpuPAddr (IMG_UINTPTR_T CpuVAddr);


/*!
******************************************************************************

 @Function	ENV_CpuPAddrToDevPAddr
 
 @Description 
 
 Compute a device physical address from a cpu physical address. 
 
 @Input    cpu_paddr - cpu physical address.

 @Return   device physical address.

******************************************************************************/
IMG_DEV_PHYADDR
ENV_CpuPAddrToDevPAddr (IMG_CPU_PHYADDR cpu_paddr);


/*!
******************************************************************************

 @Function	ENV_SysPAddrToCpuPAddr
 
 @Description 
 
 Compute a cpu physical address from a system physical address. 
 
 @Input    SysPAddr - system physical address.

 @Return   cpu physical address.

******************************************************************************/
IMG_CPU_PHYADDR
ENV_SysPAddrToCpuPAddr (IMG_SYS_PHYADDR SysPAddr);


/*!
******************************************************************************

 @Function	ENV_CpuPAddrToSysPAddr
 
 @Description 
 
 Compute a system physical address from a cpu physical address. 
 
 @Input    cpu_paddr - cpu physical address.

 @Return   device physical address.

******************************************************************************/
IMG_SYS_PHYADDR
ENV_CpuPAddrToSysPAddr (IMG_CPU_PHYADDR cpu_paddr);


/*!
******************************************************************************

 @Function	ENV_SysPAddrToDevPAddr
 
 @Description 
 
 Compute a device physical address from a system physical address.
 
 @Input    SysPAddr - system physical address.

 @Return   device physical address.

******************************************************************************/
IMG_DEV_PHYADDR
ENV_SysPAddrToDevPAddr (IMG_SYS_PHYADDR SysPAddr);
    
#if defined (__cplusplus)
}
#endif

#endif/* _ENV_H_ */