//-------------------------------------------------------------------------------------------------
// Close the interface
//-------------------------------------------------------------------------------------------------
void MDrv_EMAC_close(struct eth_device *nic)
{
u32 uRegVal;
//Disable Receiver and Transmitter //
uRegVal = MHal_EMAC_Read_CTL();
//uRegVal &= ~(EMAC_TE | EMAC_RE);
MHal_EMAC_Write_CTL(uRegVal);
// Disable PHY interrupt //
MHal_EMAC_disable_phyirq ();
//Disable MAC interrupts //
uRegVal = EMAC_INT_RCOM | EMAC_INT_RBNA
| EMAC_INT_TUND | EMAC_INT_RTRY | EMAC_INT_TCOM
| EMAC_INT_ROVR | EMAC_INT_HRESP;
MHal_EMAC_Write_IDR(uRegVal);
netif_stop_queue (nic);
}
//-------------------------------------------------------------------------------------------------
//Initialize and start the Receiver and Transmit subsystems
//-------------------------------------------------------------------------------------------------
static void MDrv_EMAC_start (const struct eth_device *nic)
{
struct emac_hw *hw = (struct emac_hw *) nic->priv;
u32 uRegVal;
#ifdef SOFTWARE_DESCRIPTOR
u32 i;
#endif
// Initialize Receive Buffer Descriptors
memset((u8*)(RBQP_BASE+RAM_ADDR_BASE),0x00,RBQP_SIZE);
#ifdef SOFTWARE_DESCRIPTOR
for(i=0; i<RBQP_LENG;i++)
{
if(i<(RBQP_LENG-1))
MHal_EMAC_WritRam32((RBQP_BASE+RAM_ADDR_BASE), i*16, (RX_BUFFER_BASE+0x600*i));
else
MHal_EMAC_WritRam32((RBQP_BASE+RAM_ADDR_BASE), i*16, (RX_BUFFER_BASE+0x600*i+EMAC_DESC_WRAP));
}
#else
MHal_EMAC_WritRam32((RBQP_BASE+RAM_ADDR_BASE),(RBQP_SIZE-0x08),0x00000002);
#endif
Chip_Flush_Memory();
// set offset of read and write pointers in the receive circular buffer //
uRegVal = MHal_EMAC_Read_BUFF();
uRegVal = (RX_BUFFER_BASE|RX_BUFFER_SEL);
MHal_EMAC_Write_BUFF(uRegVal);
MHal_EMAC_Write_RDPTR(0);
MHal_EMAC_Write_WRPTR(0);
// Program address of descriptor list in Rx Buffer Queue register //
MHal_EMAC_Write_RBQP(RBQP_BASE);
//Reset buffer index//
hw->rxBuffIndex = 0;
// Enable Receive and Transmit //
uRegVal = MHal_EMAC_Read_CTL();
uRegVal |= (EMAC_RE | EMAC_TE);
MHal_EMAC_Write_CTL(uRegVal);
}
//-------------------------------------------------------------------------------------------------
// Open the ethernet interface
//-------------------------------------------------------------------------------------------------
static int MDrv_EMAC_open (struct eth_device *nic, bd_t * bis)
{
// struct emac_hw *hw = (struct emac_hw *) nic->priv;
u32 uRegVal;
//ato EMAC_SYS->PMC_PCER = 1 << EMAC_ID_EMAC; //Re-enable Peripheral clock //
uRegVal = MHal_EMAC_Read_CTL();
uRegVal |= EMAC_CSR;
MHal_EMAC_Write_CTL(uRegVal);
// Enable PHY interrupt //
MHal_EMAC_enable_phyirq ();
// Enable MAC interrupts //
uRegVal = EMAC_INT_RCOM |EMAC_INT_RBNA
| EMAC_INT_TUND | EMAC_INT_RTRY | EMAC_INT_TCOM
| EMAC_INT_ROVR | EMAC_INT_HRESP;
MHal_EMAC_Write_IER(uRegVal);
MDrv_EMAC_start (nic);
return 0;
}
//-------------------------------------------------------------------------------------------------
// EMAC Negotiation PHY
//-------------------------------------------------------------------------------------------------
u32 MHal_EMAC_NegotiationPHY(void)
{
// Set PHY --------------------------------------------------------------
u32 i;
u32 word_PHY = 0x00000000;
u32 retValue = 0;
// IMPORTANT: Get real duplex by negotiation with peer.
u32 word_ETH_CTL = MHal_EMAC_Read_CTL();
MHal_EMAC_Write_CTL(0x0000001C | word_ETH_CTL);
MHalThisUVE.cntChkINTCounter=0;
word_PHY = 0x50822100;
MHal_EMAC_Write_MAN(word_PHY);
while(MHal_EMAC_CheckINTDone()!=1);
MHalThisUVE.flagISR_INT_DONE = 0x00;
MHalThisUVE.cntChkINTCounter=0;
word_PHY = 0x509201E1;
MHal_EMAC_Write_MAN(word_PHY);
while(MHal_EMAC_CheckINTDone()!=1);
MHalThisUVE.flagISR_INT_DONE = 0x00;
MHalThisUVE.cntChkINTCounter=0;
word_PHY = 0x50821200;
MHal_EMAC_Write_MAN(word_PHY);
while(MHal_EMAC_CheckINTDone()!=1);
MHalThisUVE.flagISR_INT_DONE = 0x00;
MHalThisUVE.cntChkINTCounter=0;
// IMPORTANT: (20070906) There must be some delay (about 2 ~ 3 seconds) between writing 0x57821200 and 0x67FE0000.
// Otherwise, the later EMAC_WritReg32(REG_ETH_MAN,word_PHY) has no effect.
MHalThisBCE.duplex = 1; // Set default as Half-duplex if negotiation fails.
retValue = 1;
MHal_EMAC_CableConnection();
word_PHY = 0x60FE0000; // Read for 32th reg
MHal_EMAC_Write_MAN(word_PHY);
MHalThisUVE.cntChkINTCounter=0;
while(MHal_EMAC_CheckINTDone()!=1);
MHalThisUVE.flagISR_INT_DONE = 0x00;
MHalThisUVE.cntChkINTCounter=0;
MHalThisUVE.cntChkCableConnect = 0;
for(i=0;i<100;i++) // (20071026_CHARLES) No check connection here, if no connect, also init here.
{
word_PHY = MHal_EMAC_Read_MAN();
word_PHY &= 0x0000FFFF;
if(word_PHY & 0x00001000) {
u32 test1 = (word_PHY & 0x0000001C) >> 2;
if(test1 == 0x001 || test1 == 0x002) {
MHalThisBCE.duplex = 1;
retValue = 1;
} else {
MHalThisBCE.duplex = 2;
retValue = 2;
} // else
//retValue = 1;
break;
} // if
mdelay(1);
MHalThisUVE.cntChkCableConnect++;
if(MHalThisUVE.cntChkCableConnect==MAX_INT_COUNTER)
break;
} // for