static int netx_eth_rx (struct eth_device *edev)
{
struct netx_eth_priv *priv = (struct netx_eth_priv *)edev->priv;
int xcno = priv->xcno;
unsigned int val, frameno, seg, len;
if(!PFIFO_REG( PFIFO_FILL_LEVEL(IND_FIFO_PORT_LO(xcno)))) {
return 0;
}
val = PFIFO_REG( PFIFO_BASE(IND_FIFO_PORT_LO(xcno)) );
frameno = (val & FIFO_PTR_FRAMENO_MASK) >> FIFO_PTR_FRAMENO_SHIFT;
seg = (val & FIFO_PTR_SEGMENT_MASK) >> FIFO_PTR_SEGMENT_SHIFT;
len = (val & FIFO_PTR_FRAMELEN_MASK) >> FIFO_PTR_FRAMELEN_SHIFT;
/* get data */
memcpy((void*)NetRxPackets[0], (void *)(SRAM_BASE(seg) + frameno * 1560), len);
/* pass to barebox */
net_receive(NetRxPackets[0], len);
PFIFO_REG(PFIFO_BASE(EMPTY_PTR_FIFO(xcno))) =
FIFO_PTR_SEGMENT(seg) |
FIFO_PTR_FRAMENO(frameno);
return 0;
}
static int netx_eth_send (struct eth_device *edev,
void *packet, int length)
{
struct netx_eth_priv *priv = (struct netx_eth_priv *)edev->priv;
int xcno = priv->xcno;
unsigned int val;
int timeout = 500;
unsigned char *dst = (unsigned char *)(SRAM_BASE(xcno) + 1560);
memcpy(dst, (void *)packet, length);
if( length < 60 ) {
memset(dst + length, 0, 60 - length);
length = 60;
}
PFIFO_REG(PFIFO_BASE(REQ_FIFO_PORT_LO(xcno))) =
FIFO_PTR_SEGMENT(xcno) |
FIFO_PTR_FRAMENO(1) |
FIFO_PTR_FRAMELEN(length);
while (!PFIFO_REG( PFIFO_FILL_LEVEL(CON_FIFO_PORT_LO(xcno))) && timeout) {
timeout--;
udelay(100);
}
#if 0
if (!timeout) {
loadxc(0);
loadxc(1);
eth_init(gd->bd);
return -1;
}
#endif
val = PFIFO_REG( PFIFO_BASE(CON_FIFO_PORT_LO(xcno)) );
if((val & FIFO_PTR_ERROR_MASK) & 0x8)
printf("error sending frame: %d\n",val);
return 0;
}
static int netx_eth_init_dev(struct eth_device *edev)
{
struct netx_eth_priv *priv = (struct netx_eth_priv *)edev->priv;
int xcno = priv->xcno;
int i;
loadxc(xcno);
/* Fill empty pointer fifo */
for (i = 2; i <= 18; i++)
PFIFO_REG( PFIFO_BASE(EMPTY_PTR_FIFO(xcno)) ) = FIFO_PTR_FRAMENO(i) | FIFO_PTR_SEGMENT(xcno);
return 0;
}