int ep1_init(dma_regs_t *chn)
{
UDC_write( Ser0UDCOMP, rx_pktsize-1 );
dmachn_rx = chn;
sa1100_clear_dma(dmachn_rx);
ep1_done(-EAGAIN);
return 0;
}
void ep1_reset(void)
{
if (currentPort) {
rx_pktsize = 8; // OJO
}
else
{
rx_pktsize = 1; // OJO
}
sa1100_clear_dma(dmachn_rx);
UDC_clear(Ser0UDCCS1, UDCCS1_FST);
ep1_done(-EINTR);
}
void ep1_int_hndlr(struct usb_request *usb_req)
{
ep1_remain = ep1_len - usb_req->length;
if (usb_debug)
printf("%s send finisned buf %x len %d remain %d\n",
__func__, usb_req->buf, usb_req->length, ep1_remain);
if (ep1_remain != 0) {
/* more data to go */
ep1_start();
} else {
ep1_done(0);
}
}
void
ep1_reset(void)
{
ep1_done(-EINTR);
}
void ep1_int_hndlr()
{
dma_addr_t dma_addr;
unsigned int len;
int status = Ser0UDCCS1;
PRINTKD( "[%lu]Ep1 int %d\n", (jiffies-start_time)*10, status);
if ( naking )
printk( "%sEh? in ISR but naking = %d\n", "usbrx: ", naking );
// Reive packet complete
if (status & UDCCS1_RPC) {
if (!ep1_curdmalen) {
printk("usb_recv: RPC for non-existent buffer\n");
naking = 1;
return;
}
sa1100_stop_dma(dmachn_rx);
if (status & UDCCS1_SST) {
printk("usb_recv: stall sent OMP=%d\n",Ser0UDCOMP);
UDC_flip(Ser0UDCCS1, UDCCS1_SST);
ep1_done(-EIO); // UDC aborted current transfer, so we do
return;
}
if (status & UDCCS1_RPE) {
printk("usb_recv: RPError %x\n", status);
UDC_flip(Ser0UDCCS1, UDCCS1_RPC);
ep1_done(-EIO);
return;
}
dma_addr = sa1100_get_dma_pos(dmachn_rx);
pci_unmap_single(NULL, ep1_curdmapos, ep1_curdmalen, PCI_DMA_FROMDEVICE);
len = dma_addr - ep1_curdmapos;
if (len < ep1_curdmalen) {
char *buf = ep1_curdmabuf + len;
while (Ser0UDCCS1 & UDCCS1_RNE) {
if (len >= ep1_curdmalen) {
printk("usb_recv: too much data in fifo\n");
break;
}
*buf++ = Ser0UDCDR;
len++;
}
} else if (Ser0UDCCS1 & UDCCS1_RNE) {
printk("usb_recv: fifo screwed, shouldn't contain data\n");
len = 0;
}
ep1_curdmalen = 0; /* dma unmap already done */
ep1_remain -= len;
naking = 1;
ep1_done((len) ? 0 : -EPIPE);
}
/* else, you can get here if we are holding NAK */
}
