Unable to trigger EDMA manually

Hello,everyone!

I'm using C6455&CSL under SYS/BIOS to perform a simple data transfer,but now I find an interesting phenomenon:

When I choose Channel 0(HPI/PCI-to-DSPEvent),It works OK.

But when I change the channel such as the Channel 3, I can't trigger the EDMA manually. I find the EER and ESR is correct, the corresponding bit is already set 1,but the EDMA just don't start a transfer.

I've checked my param set mapped to the channel, but it seems all right.

Can anybody helps me?Thank you very much.

Part of my code :

status = CSL_edma3Init(&context);

     /* Edma module open */
     hModule = CSL_edma3Open(&edmaObj,CSL_EDMA3,NULL,&status);

     /* Edma module setup */
     dmahwSetup.paramNum = 0;
     dmahwSetup.que      = CSL_EDMA3_QUE_0;
     hwSetup.dmaChaSetup = &dmahwSetup;
     hwSetup.qdmaChaSetup = NULL;
     status = CSL_edma3HwSetup(hModule,&hwSetup);

     /* Setup the DRAE masks
      * DRAE enable(Bits 0-15) for the shadow region 1.
      */
     regionAccess.region = CSL_EDMA3_REGION_1 ;
     regionAccess.drae =   0xFFFF ;
     regionAccess.draeh =  0x0000 ;
     status = CSL_edma3HwControl(hModule,CSL_EDMA3_CMD_DMAREGION_ENABLE, \
                                 &regionAccess);

     /* Channel open */
     chAttr.regionNum = CSL_EDMA3_REGION_1;
     chAttr.chaNum = CSL_EDMA3_CHA_3;
     hChannel = CSL_edma3ChannelOpen(&chObj, CSL_EDMA3, &chAttr, &status);

     /* Get the parameter handle */
     hParamBasic = CSL_edma3GetParamHandle(hChannel,0,&status);

     /* Edma parameter entry Setup */
     myParamSetup.option = CSL_EDMA3_OPT_MAKE(CSL_EDMA3_ITCCH_DIS, \
                                              CSL_EDMA3_TCCH_DIS, \
                                              CSL_EDMA3_ITCINT_DIS, \
                                              CSL_EDMA3_TCINT_EN,\
                                              1,CSL_EDMA3_TCC_NORMAL,\
                                              CSL_EDMA3_FIFOWIDTH_NONE, \
                                              CSL_EDMA3_STATIC_DIS, \
                                              CSL_EDMA3_SYNC_A, \
                                              CSL_EDMA3_ADDRMODE_INCR, \
                                              CSL_EDMA3_ADDRMODE_INCR);
     myParamSetup.srcAddr = (Uint32)SrcBuf;
     myParamSetup.aCntbCnt = CSL_EDMA3_CNT_MAKE(16,1);
     myParamSetup.dstAddr = (Uint32)Shared_BufA;
     myParamSetup.srcDstBidx = CSL_EDMA3_BIDX_MAKE(0,0);
     myParamSetup.linkBcntrld = CSL_EDMA3_LINKBCNTRLD_MAKE (CSL_EDMA3_LINK_NULL,
                                                            1);
     myParamSetup.srcDstCidx = CSL_EDMA3_CIDX_MAKE(0,0);
     myParamSetup.cCnt = 1;
     status = CSL_edma3ParamSetup(hParamBasic,&myParamSetup);

  CSL_edma3HwChannelControl(hChannel,CSL_EDMA3_CMD_CHANNEL_CLEAR,NULL);
     CSL_edma3HwChannelControl(hChannel,CSL_EDMA3_CMD_CHANNEL_ENABLE,NULL);

     /* Hook up the EDMA event with an completion code function handler */
     EdmaEventHook(1, isr_src_A);

     /* Enable interrupts */
     regionIntr.region = CSL_EDMA3_REGION_1 ;
     regionIntr.intr = 0x2 ;
     regionIntr.intrh = 0x0 ;
     status = CSL_edma3HwControl(hModule,CSL_EDMA3_CMD_INTR_ENABLE,&regionIntr);

     /* Manually trigger the channel */
     status = CSL_edma3HwChannelControl(hChannel,CSL_EDMA3_CMD_CHANNEL_SET,NULL);