edma_ping_pong_xfer_reg5.c

Dm6455 driver,magbe useful to you!

    regionIntr.intr  =   0x0FFF ;   
    regionIntr.intrh  =  0x0000 ;
    status = CSL_edma3HwControl(hModule,CSL_EDMA3_CMD_INTR_ENABLE, &regionIntr);
    if (status != CSL_SOK) {
        printf ("Edma interrupts enable command failed\n");
        return;
    }
    
    /* Interrupt disable (Bits 2-11)  for the shadow region 5 */
    regionIntr.region =  CSL_EDMA3_REGION_5  ;   
    regionIntr.intr  =   0x0FFC ;   
    regionIntr.intrh  =  0x0000 ;
    status = CSL_edma3HwControl(hModule,CSL_EDMA3_CMD_INTR_DISABLE,&regionIntr);
    if (status != CSL_SOK) {
        printf ("Edma interrupts disable command failed\n");
        return;
    }
    
    /* Check intr enable register bit */
    if (hModule->regs->SHADOW[CSL_EDMA3_REGION_5].IER != 0x0003)
        passStatus = 0;
        
    /* Channel 0 open in context of shadow region 5 */
    chAttr.regionNum = CSL_EDMA3_REGION_5;
    chAttr.chaNum = CSL_EDMA3_CHA_DSP_EVT;
    hChannel = CSL_edma3ChannelOpen(&chObj, CSL_EDMA3, &chAttr, &status);   
    if ((hChannel == NULL) || (status != CSL_SOK)) {
        printf ("Edma channel open failed\n");
        return;
    }
    
    /* Obtain a handle to parameter set 0 */
    hParamBasic = CSL_edma3GetParamHandle(hChannel,0,&status);
    if (hParamBasic == NULL) {
        printf ("Edma get param handle for param entry 0 failed\n");    
        return;
    }
    
    /* Obtain a handle to parameter set 2 */
    hParamPing = CSL_edma3GetParamHandle(hChannel,2,&status);
    if (hParamPing == NULL) {
        printf ("Edma get param handle for param entry 2 failed\n");    
        return;
    }
    
    /* Obtain a handle to parameter set 1 */
    hParamPong = CSL_edma3GetParamHandle(hChannel,1,&status);
    if (hParamPong == NULL) {
        printf ("Edma get param handle for param entry 1 failed\n");        
        return;
    }
    
    /* Setup the first param set (Ping buffer) */
    myParamSetup.option = CSL_EDMA3_OPT_MAKE( CSL_EDMA3_ITCCH_DIS, \
                                              CSL_EDMA3_TCCH_DIS, \
                                              CSL_EDMA3_ITCINT_DIS, \
                                              CSL_EDMA3_TCINT_EN,\
                                              0, 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)srcBuff1;         
    myParamSetup.aCntbCnt = CSL_EDMA3_CNT_MAKE(512,1);       
    myParamSetup.dstAddr = (Uint32)dstBuff1;        
    myParamSetup.srcDstBidx = CSL_EDMA3_BIDX_MAKE(1,1);     
    myParamSetup.linkBcntrld = CSL_EDMA3_LINKBCNTRLD_MAKE(hParamPong,0);     
    myParamSetup.srcDstCidx = CSL_EDMA3_CIDX_MAKE(0,1);     
    myParamSetup.cCnt = 1;
    status = CSL_edma3ParamSetup(hParamBasic, &myParamSetup);
    if (status != CSL_SOK) {
        printf("Edma parameter entry setup is failed\n");
        return;
    }
    
    /* Setup the Ping Entry which loaded after the Pong entry gets exhausted */
    status = CSL_edma3ParamSetup(hParamPing,&myParamSetup);
    if (status != CSL_SOK) {
        printf("Edma ping parameter entry setup is failed\n");
        return;
    }
    
    /* Setup the Pong Entry which loaded after the Ping entry gets exhausted */
    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, \
                                              TRUE,CSL_EDMA3_SYNC_A, \
                                              CSL_EDMA3_ADDRMODE_INCR, \
                                              CSL_EDMA3_ADDRMODE_INCR
                                             );           
    myParamSetup.srcAddr = (Uint32)srcBuff2;
    myParamSetup.dstAddr = (Uint32)dstBuff2;    
    myParamSetup.linkBcntrld = CSL_EDMA3_LINKBCNTRLD_MAKE(hParamPing,0);     
    status = CSL_edma3ParamSetup(hParamPong,&myParamSetup);
    if (status != CSL_SOK) {
        printf("Edma pong parameter entry setup is failed\n");
        return;
    }
    
    /* Enable channel */
    status = CSL_edma3HwChannelControl(hChannel,CSL_EDMA3_CMD_CHANNEL_ENABLE, \
                                       NULL);
    if (status != CSL_SOK) {
        printf("Edma channel enable command is failed\n");
        return;
    }
    
    /* Initialize data */
    for (loopIndex = 0; loopIndex < 512; loopIndex++) {
        srcBuff1[loopIndex] = loopIndex;
        srcBuff2[loopIndex] = loopIndex;
        dstBuff1[loopIndex] = 0;
        dstBuff2[loopIndex] = 0;        
    }
    
    /* Manually trigger the channel */
    status = CSL_edma3HwChannelControl(hChannel,CSL_EDMA3_CMD_CHANNEL_SET,NULL);
    if (status != CSL_SOK) {
        printf("Edma channel set command is failed\n");
        return;
    }
    
    regionIntr.region = CSL_EDMA3_REGION_5;
    regionIntr.intr = 0;
    regionIntr.intrh = 0;
    
    do {
        /* Poll on interrupt bit 0 */
        CSL_edma3GetHwStatus(hModule,CSL_EDMA3_QUERY_INTRPEND,&regionIntr);
    } while (!(regionIntr.intr & 0x1));

    /* Clear interrupt bit 0 */
    status = CSL_edma3HwControl(hModule,CSL_EDMA3_CMD_INTRPEND_CLEAR, \
                               &regionIntr);   
    if (status != CSL_SOK) {
        printf("Edma clear interrupt bit 0 command is failed\n");
        return;
    }
    
    /* Mapping channel 0 to event queue 1 */
    status = CSL_edma3HwChannelSetupQue(hChannel,CSL_EDMA3_QUE_1);
    if (status != CSL_SOK) {
        printf("Edma channel setup queue is failed\n");
        return;
    }

    /* Manually trigger the channel */
    status = CSL_edma3HwChannelControl(hChannel,CSL_EDMA3_CMD_CHANNEL_SET,NULL);
    if (status != CSL_SOK) {
        printf("Edma channel set command is failed\n");
        return;
    }
    
    regionIntr.region = CSL_EDMA3_REGION_5;
    regionIntr.intr = 0;
    regionIntr.intrh = 0;
    
    /* Poll on interrupt pend bit 1 */
    do {   
        CSL_edma3GetHwStatus(hModule,CSL_EDMA3_QUERY_INTRPEND,&regionIntr);
    } while (!(regionIntr.intr & 0x2));

    /* Clear interrupt bit 1 */
    status = CSL_edma3HwControl(hModule,CSL_EDMA3_CMD_INTRPEND_CLEAR, \
                               &regionIntr);   
    if (status != CSL_SOK) {
        printf("Edma clear interrupt bit 1 command is failed\n");
        return;
    }
    
    /* Check transfer */
    if(Verify_Transfer(512, 1, 1, 0, 0, 0, 0, srcBuff1, dstBuff1,TRUE) == FALSE)
        passStatus = 0; 
    if(Verify_Transfer(512, 1, 1, 0, 0, 0, 0, srcBuff2, dstBuff2,TRUE) == FALSE)
        passStatus = 0;
           
    if (passStatus == 1)    
        printf ("<<EXAMPLE PASSED>>: Edma Ping Pong Buffer Transfer Passed\n");
    else {
        printf ("<<EXAMPLE FAILED>>: Edma Ping Pong Buffer Transfer Failed\n");
        return;
    }    
    
    
    /* Close channel */
    status = CSL_edma3ChannelClose(hChannel);
    if (status != CSL_SOK) {
        printf("Edma channel close failed\n");
        return;
    }
    
    /* Close edma module */
    status = CSL_edma3Close(hModule);
    if (status != CSL_SOK) {
        printf("Edma module close failed\n");
        return;
    }
    
    printf ("=============================================================\n");
    
    return;
}