101 lines
4.6 KiB
C++
101 lines
4.6 KiB
C++
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/***************************************************************************\
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|* *|
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|* Copyright (c) 1993-2000 NVIDIA, Corp. All rights reserved. *|
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|* *|
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|* NOTICE TO USER: The source code is copyrighted under U.S. and *|
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|* international laws. NVIDIA, Corp. of Sunnyvale, California owns *|
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|* the copyright and as design patents pending on the design and *|
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|* interface of the NV chips. Users and possessors of this source *|
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|* code are hereby granted a nonexclusive, royalty-free copyright *|
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|* and design patent license to use this code in individual and *|
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|* commercial software. *|
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|* *|
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|* Any use of this source code must include, in the user documenta- *|
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|* tion and internal comments to the code, notices to the end user *|
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|* as follows: *|
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|* *|
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|* Copyright (c) 1993-2000 NVIDIA, Corp. NVIDIA design patents *|
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|* pending in the U.S. and foreign countries. *|
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|* *|
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|* NVIDIA, CORP. MAKES NO REPRESENTATION ABOUT THE SUITABILITY OF *|
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|* THIS SOURCE CODE FOR ANY PURPOSE. IT IS PROVIDED "AS IS" WITHOUT *|
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|* EXPRESS OR IMPLIED WARRANTY OF ANY KIND. NVIDIA, CORP. DISCLAIMS *|
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|* ALL WARRANTIES WITH REGARD TO THIS SOURCE CODE, INCLUDING ALL *|
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|* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A *|
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|* PARTICULAR PURPOSE. IN NO EVENT SHALL NVIDIA, CORP. BE LIABLE *|
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|* FOR ANY SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, *|
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|* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR *|
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|* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER *|
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|* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR *|
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|* PERFORMANCE OF THIS SOURCE CODE. *|
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|* *|
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\***************************************************************************/
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/****************************** DMA Manager ********************************\
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* *
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* Module: CContextDma.cpp *
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* The MCPX HAL DMA engine implementation is provided in this module. *
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* *
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*****************************************************************************
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* *
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* History: *
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* *
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\***************************************************************************/
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extern "C"
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{
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#include <nv32.h>
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#include <nvarm.h>
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#include <aos.h>
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};
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#include <ClinkList.h>
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#include "CContextDma.h"
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RM_STATUS
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CContextDma::Initialize(VOID *pAddress, U032 uSize, U032 uType)
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{
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RM_STATUS rmStatus = RM_ERROR;
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m_uType = uType;
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m_uSize = uSize;
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switch(m_uType)
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{
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case AUDIO_CONTEXT_DMA_SESGE:
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case AUDIO_CONTEXT_DMA_SESSL:
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case AUDIO_CONTEXT_DMA_GPSGE:
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case AUDIO_CONTEXT_DMA_EPSGE:
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{
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// make sure the stuff is properly aligned
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if (!PAGEOFF(pAddress))
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{
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if (!PAGEOFF(uSize))
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{
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m_pAddress = pAddress;
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rmStatus = RM_OK;
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}
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}
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}
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break;
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case AUDIO_CONTEXT_DMA_FENOTIFIER:
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{
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// convert the address to physical
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rmStatus = aosGetPhysicalAddress(pAddress, m_uSize, &m_pAddress);
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if (rmStatus == RM_OK)
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{
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// has to be 256 byte aligned..
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if (((U032)m_pAddress) & 0xFF)
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rmStatus = RM_ERROR; // alignment fails
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}
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}
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break;
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default:
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break;
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}
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return rmStatus;
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}
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