unsigned int dmaRxCompletion(unsigned short usbDevInst, unsigned int ulEndpoint )
{
unsigned int bufferAdd;
unsigned int length;
usbInstance *usbInstance;
hostPacketDesc *rx_bd =0;;
usbInstance = &(cppiInfo.usbInst[usbDevInst]);
ulEndpoint = USB_EP_TO_INDEX(ulEndpoint);
/*read the compltetion queue */
rx_bd = (hostPacketDesc *)Cppi41DmaReadCompletionQueue(usbDevInst, usbInstance
->rxEndPoint[ulEndpoint].complettionq);
/*Fush the cache to update the BD */
CacheInv((unsigned int)rx_bd, sizeof(hostPacketDesc));
bufferAdd = rx_bd->buffAdd;
length = rx_bd->buffLength;
/*Flush the cache to update the buffer */
CacheInv(bufferAdd, length);
putFreeBd(rx_bd);
return bufferAdd;
}
/*
** VPIF Interrupt service routine.
*/
static void VPIFIsr(void)
{
#ifdef _TMS320C6X
IntEventClear(SYS_INT_VPIF_INT);
#else
IntSystemStatusClear(SYS_INT_VPIF);
#endif
/* If previously captured frame not processed, clear this interrupt and return */
if (!processed)
{
VPIFInterruptStatusClear(SOC_VPIF_0_REGS, VPIF_FRAMEINT_CH0);
return;
}
/* buffcount represents buffer to be given to capture driver and
* buffcount2 represents the newly captured buffer to be processed */
processed = 0;
captured = 0;
buffcount++;
buffcount2 = buffcount - 1;
/* Currently only two buffers are being used for capture */
if (buffcount == 2)
buffcount = 0;
/* Invalidate the buffers before giving to capture driver*/
#ifdef _TMS320C6X
CacheInv((unsigned int) buff_luma[buffcount],
CAPTURE_IMAGE_WIDTH * CAPTURE_IMAGE_HEIGHT * 2);
CacheInv((unsigned int) buff_chroma[buffcount],
CAPTURE_IMAGE_WIDTH * CAPTURE_IMAGE_HEIGHT * 2);
#else
CP15ICacheFlushBuff((unsigned int) buff_luma[buffcount],
CAPTURE_IMAGE_WIDTH * CAPTURE_IMAGE_HEIGHT * 2);
CP15ICacheFlushBuff((unsigned int) buff_chroma[buffcount],
CAPTURE_IMAGE_WIDTH * CAPTURE_IMAGE_HEIGHT * 2);
#endif
/* Initialize buffer addresses for a new frame*/
VPIFCaptureFBConfig(SOC_VPIF_0_REGS, VPIF_CHANNEL_0, VPIF_TOP_FIELD,
VPIF_LUMA, (unsigned int) buff_luma[buffcount], CAPTURE_IMAGE_WIDTH*2);
VPIFCaptureFBConfig(SOC_VPIF_0_REGS, VPIF_CHANNEL_0, VPIF_TOP_FIELD,
VPIF_CHROMA, (unsigned int) buff_chroma[buffcount], CAPTURE_IMAGE_WIDTH*2);
VPIFCaptureFBConfig(SOC_VPIF_0_REGS, VPIF_CHANNEL_0, VPIF_BOTTOM_FIELD,
VPIF_LUMA, (unsigned int) (buff_luma[buffcount] + CAPTURE_IMAGE_WIDTH), CAPTURE_IMAGE_WIDTH*2);
VPIFCaptureFBConfig(SOC_VPIF_0_REGS, VPIF_CHANNEL_0, VPIF_BOTTOM_FIELD,
VPIF_CHROMA, (unsigned int) (buff_chroma[buffcount] + CAPTURE_IMAGE_WIDTH), CAPTURE_IMAGE_WIDTH*2);
/* Initialize buffer addresses with the captured frame ready to be processed */
videoTopC = buff_chroma[buffcount2];
videoTopY = buff_luma[buffcount2];
captured = 1;
/* clear interrupt */
VPIFInterruptStatusClear(SOC_VPIF_0_REGS, VPIF_FRAMEINT_CH0);
}
unsigned int dmaTxCompletion(unsigned short usbDevInst, unsigned int ulEndpoint )
{
hostPacketDesc *completed_bd;
unsigned int ulRegister;
unsigned int state;
unsigned int packetid;
usbInstance *usbInstance;
usbInstance = &(cppiInfo.usbInst[usbDevInst]);
ulRegister = USB_O_TXCSRL1 + EP_OFFSET( ulEndpoint);
ulEndpoint = USB_EP_TO_INDEX(ulEndpoint);
/*read the compltetion queue */
completed_bd = (hostPacketDesc *)Cppi41DmaReadCompletionQueue(usbDevInst, usbInstance
->txEndPoint[ulEndpoint].complettionq);
/*Get the packet ID to update the DMA status */
packetid = completed_bd->packetId;
if(packetid == EOP)
state = DMA_TX_COMPLETED;
else
state = DMA_TX_IN_PROGRESS;
/*wait till Tx completion */
if(state == DMA_TX_COMPLETED)
while ((HWREGH(usbInstance->usbBaseAddress + ulRegister) & 0x2) == 0x02);
CacheInv((unsigned int)completed_bd->buffAdd, sizeof(completed_bd->buffAdd));
cppiDmaFreenBuffer((unsigned int *)completed_bd->buffAdd);
completed_bd->buffAdd = 0;
/*put the free buffer */
putFreeBd(completed_bd);
return state;
}
