[TMS570] how to transmitt data on mibSPI with DMA

I had try to make a simple code to transmit  data by mibSPI3 (in SPI mode) with DMA

but my code has show a clock only , without any data from MOSI.

and i can sent data by force data to DAT1 on mibSPI register...

which I think maybe I has wrong config mibSPI and DMA.

this my code to config mibSPI and DMA .

void dmaConfigCtrlPacket(void)
{
	   /* - configuring dma control packets   */
	   g_dmaCTRLPKT_TX.SADD      = (uint32)&spi_TX;    /* source address             */
	   g_dmaCTRLPKT_TX.DADD      = (uint32)&(mibspiREG3->DAT1);    /* destination  address       */
	   g_dmaCTRLPKT_TX.CHCTRL    = 0;                 /* channel control            */
	   g_dmaCTRLPKT_TX.FRCNT	   = 1;                 /* frame count                */
	   g_dmaCTRLPKT_TX.ELCNT     = adc_Length;            /* element count              */
	   g_dmaCTRLPKT_TX.ELDOFFSET = 4;                 /* element destination offset */
	   g_dmaCTRLPKT_TX.ELSOFFSET = 0;		            /* element destination offset */
	   g_dmaCTRLPKT_TX.FRDOFFSET = 0;		            /* frame destination offset   */
	   g_dmaCTRLPKT_TX.FRSOFFSET = 0;                 /* frame destination offset   */
	   g_dmaCTRLPKT_TX.PORTASGN  = 4;
	   g_dmaCTRLPKT_TX.RDSIZE    = ACCESS_8_BIT;	    /* read size                  */
	   g_dmaCTRLPKT_TX.WRSIZE    = ACCESS_8_BIT; 	/* write size                 */
	   g_dmaCTRLPKT_TX.TTYPE     = FRAME_TRANSFER ;   /* transfer type              */
	   g_dmaCTRLPKT_TX.ADDMODERD = ADDR_INC1;         /* address mode read          */
	   g_dmaCTRLPKT_TX.ADDMODEWR = ADDR_OFFSET;       /* address mode write         */
	   g_dmaCTRLPKT_TX.AUTOINIT  = AUTOINIT_ON;       /* autoinit                   */

	   g_dmaCTRLPKT_RX.SADD      = (uint32)&(mibspiREG3->BUF);    /* source address             */
	   g_dmaCTRLPKT_RX.DADD      = (uint32)&spi_RX;    /* destination  address       */
	   g_dmaCTRLPKT_RX.CHCTRL    = 1;                 /* channel control            */
	   g_dmaCTRLPKT_RX.FRCNT	   = 1;                 /* frame count                */
	   g_dmaCTRLPKT_RX.ELCNT     = adc_Length;             /* element count              */
	   g_dmaCTRLPKT_RX.ELDOFFSET = 0;                 /* element destination offset */
	   g_dmaCTRLPKT_RX.ELSOFFSET = 4;		            /* element destination offset */
	   g_dmaCTRLPKT_RX.FRDOFFSET = 0;		            /* frame destination offset   */
	   g_dmaCTRLPKT_RX.FRSOFFSET = 0;                 /* frame destination offset   */
	   g_dmaCTRLPKT_RX.PORTASGN  = 4;
	   g_dmaCTRLPKT_RX.RDSIZE    = ACCESS_8_BIT;	    /* read size                  */
	   g_dmaCTRLPKT_RX.WRSIZE    = ACCESS_8_BIT; 	/* write size                 */
	   g_dmaCTRLPKT_RX.TTYPE     = FRAME_TRANSFER ;   /* transfer type              */
	   g_dmaCTRLPKT_RX.ADDMODERD = ADDR_OFFSET;         /* address mode read          */
	   g_dmaCTRLPKT_RX.ADDMODEWR = ADDR_INC1;       /* address mode write         */
	   g_dmaCTRLPKT_RX.AUTOINIT  = AUTOINIT_ON;       /* autoinit                   */

	   /* upto 32 control packets are supported. */

	   /* - setting dma control packets */
	   dmaSetCtrlPacket(DMA_CH0,g_dmaCTRLPKT_RX);
	   dmaSetCtrlPacket(DMA_CH1,g_dmaCTRLPKT_TX);

	   /* - setting the dma channel to trigger on h/w request */
	   dmaSetChEnable(DMA_CH0, DMA_HW);
	   dmaSetChEnable(DMA_CH1, DMA_SW);
}

and Thisi my main..

void main(void)
{
/* USER CODE BEGIN (3) */

	i2cInit(); // Initial I2C
	spiInit(); // Initial SPI
	gioInit(); // Initial GPIO
	mibspiInit(); // Initial SPI1-3-5 for ADS1278

	gioSetDirection(gioPORTA, 0xFF);
	gioSetBit(gioPORTA,0,1);
	spi_TX[0] = 0xAA;
	/* - creating a data chunk in system ram to start with ... */
//	loadDataPattern(D_SIZE,&TX_DATA[0]);


	/* - enabling loopback ( this is to emulate data transfer without external wires */
//	mibspiEnableInternalLoopback(mibspiREG1);
	dmaConfigCtrlPacket();
	/* - assigning dma request: channel-0 with request line - 1 */
	dmaReqAssign(0,1 );

	/* - configuring the mibspi dma , channel 0 , tx line -0 , rxline -1     */
	/* - refer to the device data sheet dma request source for mibspi tx/rx  */
	mibspiDmaConfig(mibspiREG3,0,0,1);

	/* - enabling dma module */
	dmaEnable();
//	spi_TX[0] = 0x80;
	while(1){
		spi_TX[0] = 0x80;
		gioToggleBit(gioPORTA,0);

		/* - start the mibspi transfer tg 0 */
		mibspiTransfer(mibspiREG3,0 );

		/* ... wait until transfer complete  */
		while(!(mibspiIsTransferComplete(mibspiREG3,0))){
		}
		/* copy from mibspi ram to sys ram */
		mibspiGetData(mibspiREG3, 0, spi_RX);

//		i2cSetSlaveAdd(i2cREG1,0x40);
//		i2cSetStart(i2cREG1);
//		i2cSendByte(i2cREG1,0x42);
//		i2cSendByte(i2cREG1,0x21);
//		i2cSendByte(i2cREG1,0x36);

		delay();

	}
/* USER CODE END */
}

Have two thing I don't know what  is it?
1. How I can make relate DMA data to mibSPI for transmit, I think that's wrong config.

2. what's channel control, that's has a limit to relate to any peripheral?

Thank You for your suggestion