dsp edma 拷贝和A8 DMA拷贝

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1）dsp调用这两个函数：

void DM81XX_EDMA3_setParams(int chId, int dmaQueue, unsigned int srcAddr,
                            unsigned int dstAddr, unsigned short edmaWidth,
                            unsigned short edmaHeight, short srcLineOffset,
                            short dstLineOffset)

void DM81XX_EDMA3_triggerTransfer(int chId)

进行edma数据的copy；

dma拷贝内容如下：

dma拷贝：

int OSA_dmaCopyFillRun(OSA_DmaChHndl *hndl, void *pPrm, int count, int copyFillType){  DMA_CopyFillPrm prm;  Uint32 cmd;  int status;  if(hndl->chId < 0)    return OSA_EFAIL;    prm.chId = hndl->chId;  prm.count = count;  prm.copyFillType = copyFillType;  prm.prm = pPrm;  cmd = DMA_IOCTL_CMD_MAKE(prm.copyFillType);  status = ioctl(gOSA_dmaCtrl.fd, cmd, &prm);    return status;}

int OSA_dmaCopy1D(OSA_DmaChHndl *hndl, OSA_DmaCopy1D *prm, int count ){  return OSA_dmaCopyFillRun(hndl, prm, count, DMA_CMD_COPY_1D);}

int OSA_dmaInit(){  char deviceName[20];       if(!gOSA_dmaCtrl.isInitDone) {    sprintf(deviceName, "/dev/%s", DMA_DRV_NAME);    gOSA_dmaCtrl.fd = open(deviceName, O_RDWR);    if(gOSA_dmaCtrl.fd<0)      return OSA_EFAIL;        gOSA_dmaCtrl.isInitDone = TRUE;  }    return OSA_SOK;}

int OSA_dmaOpen(OSA_DmaChHndl *hndl, int dmaMode, int maxTransfers){  DMA_OpenClosePrm prm;  Uint32 cmd;  int status;      prm.chId = -1;  prm.mode = dmaMode;  prm.maxTransfers = maxTransfers;    cmd = DMA_IOCTL_CMD_MAKE(DMA_CMD_CH_OPEN);  status = ioctl(gOSA_dmaCtrl.fd, cmd, &prm);    if(status==0)    hndl->chId = prm.chId;  else      hndl->chId = -1;    return status;}

调用：

OSA_DmaCopy1D copy1D;

copy1D.srcPhysAddr = (unsigned long)srcAddr;
copy1D.dstPhysAddr = (unsigned long)dstAddr;

copy1D.size = sizeToCopy;
OSA_dmaCopy1D(&dmaHndl, &copy1D, 1);

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