 /***************************************************************************\
|*                                                                           *|
|*        Copyright (c) 1993-2000 NVIDIA, Corp.  All rights reserved.        *|
|*                                                                           *|
|*     NOTICE TO USER:   The source code  is copyrighted under  U.S. and     *|
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|*     interface  of the NV chips.   Users and possessors of this source     *|
|*     code are hereby granted  a nonexclusive,  royalty-free  copyright     *|
|*     and  design  patent license  to use this code  in individual  and     *|
|*     commercial software.                                                  *|
|*                                                                           *|
|*     Any use of this source code must include,  in the user documenta-     *|
|*     tion and  internal comments to the code,  notices to the end user     *|
|*     as follows:                                                           *|
|*                                                                           *|
|*     Copyright (c) 1993-2000  NVIDIA, Corp.    NVIDIA  design  patents     *|
|*     pending in the U.S. and foreign countries.                            *|
|*                                                                           *|
|*     NVIDIA, CORP.  MAKES  NO REPRESENTATION ABOUT  THE SUITABILITY OF     *|
|*     THIS SOURCE CODE FOR ANY PURPOSE.  IT IS PROVIDED "AS IS" WITHOUT     *|
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 \***************************************************************************/

/****************************** DMA Manager ********************************\
*                                                                           *
* Module: CContextDma.cpp                                                   *
*   The MCPX HAL DMA engine implementation is provided in this module.      *
*                                                                           *
*****************************************************************************
*                                                                           *
* History:                                                                  *
*                                                                           *
\***************************************************************************/
extern "C"
{
#include <nv32.h>
#include <nvarm.h>
#include <aos.h>
};

#include <ClinkList.h>
#include "CContextDma.h"


RM_STATUS
CContextDma::Initialize(VOID *pAddress, U032 uSize, U032 uType)
{
    RM_STATUS rmStatus = RM_ERROR;

    m_uType = uType;
    m_uSize = uSize;

    switch(m_uType)
    {
    case AUDIO_CONTEXT_DMA_SESGE:
    case AUDIO_CONTEXT_DMA_SESSL:
    case AUDIO_CONTEXT_DMA_GPSGE:
    case AUDIO_CONTEXT_DMA_EPSGE:
        {
            // make sure the stuff is properly aligned
            if (!PAGEOFF(pAddress))
            {
                if (!PAGEOFF(uSize))
                {
                    m_pAddress = pAddress;
                    rmStatus = RM_OK;
                }
            }
        }
        break;

    case AUDIO_CONTEXT_DMA_FENOTIFIER:
        {
            // convert the address to physical
            rmStatus = aosGetPhysicalAddress(pAddress, m_uSize, &m_pAddress);
            if (rmStatus == RM_OK)
            {
                // has to be 256 byte aligned..
                if (((U032)m_pAddress) & 0xFF)
                    rmStatus = RM_ERROR;        // alignment fails
            }
        }
        break;

    default:
        break;
    }

    return rmStatus;
}
