void IsrDma2(void)
{
U8 out_csr3;
U32 dwEmptyCnt;
U8 saveIndexReg=usbdevregs->INDEX_REG;
usbdevregs->INDEX_REG=3;
out_csr3=usbdevregs->OUT_CSR1_REG;
ClearPending_my(BIT_DMA2);
/* thisway.diy, 2006.06.22
* When the first DMA interrupt happened, it has received max (0x80000 + EP3_PKT_SIZE) bytes data from PC
*/
if (!totalDmaCount)
totalDmaCount = dwWillDMACnt + EP3_PKT_SIZE;
else
totalDmaCount+=dwWillDMACnt;
// dwUSBBufWritePtr = ((dwUSBBufWritePtr + dwWillDMACnt - USB_BUF_BASE) % USB_BUF_SIZE) + USB_BUF_BASE; /* thisway.diy, 2006.06.21 */
dwUSBBufWritePtr = ((dwUSBBufWritePtr + dwWillDMACnt - dwUSBBufBase) % dwUSBBufSize) + dwUSBBufBase;
if(totalDmaCount>=downloadFileSize)// is last?
{
totalDmaCount=downloadFileSize;
ConfigEp3IntMode();
if(out_csr3& EPO_OUT_PKT_READY)
{
CLR_EP3_OUT_PKT_READY();
}
intregs->INTMSK|=BIT_DMA2;
intregs->INTMSK&=~(BIT_USBD);
}
else
{
if((totalDmaCount+0x80000)<downloadFileSize)
{
dwWillDMACnt = 0x80000;
}
else
{
dwWillDMACnt = downloadFileSize - totalDmaCount;
}
// dwEmptyCnt = (dwUSBBufReadPtr - dwUSBBufWritePtr - 1 + USB_BUF_SIZE) % USB_BUF_SIZE; /* thisway.diy, 2006.06.21 */
dwEmptyCnt = (dwUSBBufReadPtr - dwUSBBufWritePtr - 1 + dwUSBBufSize) % dwUSBBufSize;
if (dwEmptyCnt >= dwWillDMACnt)
{
ConfigEp3DmaMode(dwUSBBufWritePtr, dwWillDMACnt);
}
else
{
bDMAPending = 1;
}
}
usbdevregs->INDEX_REG = saveIndexReg;
}
void IsrDma2()
{
struct s3c24x0_interrupt *intregs = s3c24x0_get_base_interrupt();
struct s3c24x0_usb_device *usbdevregs = s3c24x0_get_base_usb_device();
U8 out_csr3;
U32 dwEmptyCnt;
U8 saveIndexReg = usbdevregs->INDEX_REG;
usbdevregs->INDEX_REG = 3;
out_csr3 = usbdevregs->OUT_CSR1_REG;
ClearPending_my((int)BIT_DMA2);
if (!totalDmaCount)
totalDmaCount = dwWillDMACnt + EP3_PKT_SIZE;
else
totalDmaCount += dwWillDMACnt;
dwUSBBufWritePtr = ((dwUSBBufWritePtr + dwWillDMACnt - dwUSBBufBase) %
dwUSBBufSize) + dwUSBBufBase;
if (totalDmaCount >= downloadFileSize) { /* last */
totalDmaCount = downloadFileSize;
ConfigEp3IntMode();
if (out_csr3 & EPO_OUT_PKT_READY)
CLR_EP3_OUT_PKT_READY();
/* 关闭DMA2中断并重新开启USBD中断 */
intregs->INTMSK |= BIT_DMA2;
intregs->INTMSK &= ~(BIT_USBD);
} else {
if ((totalDmaCount + 0x80000) < downloadFileSize)
dwWillDMACnt = 0x80000;
else
dwWillDMACnt = downloadFileSize - totalDmaCount;
dwEmptyCnt = (dwUSBBufReadPtr - dwUSBBufWritePtr - 1 + dwUSBBufSize) %
dwUSBBufSize;
if (dwEmptyCnt >= dwWillDMACnt)
ConfigEp3DmaMode(dwUSBBufWritePtr, dwWillDMACnt);
}
usbdevregs->INDEX_REG = saveIndexReg;
}
void __irq IsrDma2(void)
{
U8 out_csr3;
U32 nextTotalDmaCount;
U8 saveIndexReg=rINDEX_REG;
rINDEX_REG=3;
out_csr3=rOUT_CSR1_REG;
ClearPending(BIT_DMA2);
totalDmaCount+=0x80000;
if(totalDmaCount>=downloadFileSize)// is last?
{
totalDmaCount=downloadFileSize;
ConfigEp3IntMode();
if(out_csr3& EPO_OUT_PKT_READY)
{
CLR_EP3_OUT_PKT_READY();
}
rINTMSK|=BIT_DMA2;
rINTMSK&=~(BIT_USBD);
}
else
{
if((totalDmaCount+0x80000)<downloadFileSize)
{
nextTotalDmaCount=totalDmaCount+0x80000;
if((nextTotalDmaCount+0x80000)<downloadFileSize)
{
//for (2~n)th autoreload.
rDIDST2=((U32)downloadAddress+nextTotalDmaCount-8);
rDIDSTC2=(1<<2)|(0<<1)|(0<<0);
rDCON2=rDCON2&~(0xfffff)|(0x80000);
while(rEP3_DMA_TTC<0xfffff)
{
rEP3_DMA_TTC_L=0xff;
rEP3_DMA_TTC_M=0xff;
rEP3_DMA_TTC_H=0xf;
//0xfffff;
}
}
else
{
rDIDST2=((U32)downloadAddress+nextTotalDmaCount-8);
rDIDSTC2=(0<<1)|(0<<0);
rDCON2=rDCON2&~(0xfffff)|(downloadFileSize-nextTotalDmaCount);
while(rEP3_DMA_TTC<0xfffff)
{
rEP3_DMA_TTC_L=0xff;
rEP3_DMA_TTC_M=0xff;
rEP3_DMA_TTC_H=0xf;
//0xfffff;
}
}
}
else
{
// rDIDST2=((U32)downloadAddress+downloadFileSize-8); //for next autoreload.
rDIDSTC2=(0<<1)|(0<<0); // reload is occurred when Curr_TC is 0
// rDCON2=rDCON2&~(0xfffff)|(0);
//There is no 2nd autoreload. This will not be used.
//rDMA_TX+=0x0; //USBD register
}
}
rINDEX_REG=saveIndexReg;
}
