sdmatrans.h

freescale i.mx31 BSP CE5.0全部源码

//
// Copyright (c) Microsoft Corporation.  All rights reserved.
//
//
// Use of this source code is subject to the terms of the Microsoft end-user
// license agreement (EULA) under which you licensed this SOFTWARE PRODUCT.
// If you did not accept the terms of the EULA, you are not authorized to use
// this source code. For a copy of the EULA, please see the LICENSE.RTF on your
// install media.
//
//-----------------------------------------------------------------------------
//
//  Header:  sdmatrans.h
//
//  Provides definitions for specifying a data transfer handled by the SDMA.
//
//-----------------------------------------------------------------------------
#ifndef __SDMATRANS_H__
#define __SDMATRANS_H__

#if __cplusplus
extern "C" {
#endif

//-----------------------------------------------------------------------------
// Defines

 
//-----------------------------------------------------------------------------
// Types

typedef struct
{
    BOOL bDoneIntr;
    UINT16 numBytes;
    UINT32 srcAddrPA;
    UINT32 destAddrPA;
} SDMA_MEM_TRANS, *PSDMA_MEM_TRANS;

typedef struct
{
    BOOL bReady;
    BOOL bError;
} SDMA_TRANS_STATUS, *PSDMA_TRANS_STATUS;


//-----------------------------------------------------------------------------
// Functions

BOOL SdmaInit(void);
BOOL SdmaDeinit(void);
UINT8 SdmaOpenChan(UINT32 dmaReq, UINT8 priority);
BOOL SdmaCloseChan(UINT8 chan);
BOOL SdmaMapMemTransList(UINT8 chan, UINT32 numTrans, 
    PSDMA_MEM_TRANS pTransList);
BOOL SdmaUpdateMemTrans(UINT8 chan, UINT32 transIndex, PSDMA_MEM_TRANS pTrans);
BOOL SdmaResetTransStatus(UINT8 chan, UINT32 transIndex);
BOOL SdmaGetTransStatus(UINT8 chan, UINT32 transIndex, 
    PSDMA_TRANS_STATUS pStatus); 
BOOL SdmaResetTransList(UINT8 chan);
BOOL SdmaUnmapTransList(UINT8 chan);
BOOL SdmaStartChan(UINT8 chan);
BOOL SdmaStopChan(UINT8 chan, BOOL bKill);

#ifdef __cplusplus
}
#endif

#endif // __SDMATRANS_H__