Hi,
I am trying to run the EMAC loop-back example on a custom/reference board.
I turned off the MDIO flag in emac driver configuration, since we have an FPGA that sends ethernet packets to the DSP over RGMII.
Also I have turned off the emac loop-back. The PLL initialization is exactly the same as in the evm6472.gel .
The DSP provides a reference clock of 125MhZ to FPGA. The FPGA in-turn provides 125Mhz clock on the RGRXC pin to the DSP.
But once I do an EMAC Open, the DSP's Tx clock i.e RGTXC falls to 2.5Mhz.
Can you tell me what could be going wrong after EMAC_Open()?
Also, when I try to run the helloworld example that is part of MCSDK1.0, I do not see any Rx interrupts generated on the reference board.
Any help will be appreciated. I am copying the EMAC init code below.
Thanks,
Arun
ecfg.EMACCommonConfig.UseMdio = 0;
ecfg.EMACCommonConfig.CoreNum = 0; /* core 0 is master core in terms of EMAC */
ecfg.EMACCommonConfig.PktMTU = 10240;
/* Setup the EMAC configuration */
ecfg.EMACCommonConfig.ModeFlags =EMAC_CONFIG_MODEFLG_FULLDUPLEX |
EMAC_CONFIG_MODEFLG_GMIIEN |
EMAC_CONFIG_MODEFLG_GIGABIT |
EMAC_CONFIG_MODEFLAG_GIGFORCE |
EMAC_CONFIG_MODEFLG_RGMIIEN;
ecfg.EMACCommonConfig.ModeFlags |= EMAC_PKT_FLAGS_HASCRC;
ecfg.EMACCommonConfig.MdioModeFlags = MDIO_MODEFLG_FD1000;
/* $$$ end for local loopback... */
switch(coreNum)
{
default:
case 0:
ecfg.EMACCoreConfig.ChannelInfo.TxChanEnable = 1;
ecfg.EMACCoreConfig.ChannelInfo.RxChanEnable = 1;
break;
case 1:
ecfg.EMACCoreConfig.ChannelInfo.TxChanEnable = 2;
ecfg.EMACCoreConfig.ChannelInfo.RxChanEnable = 2;
break;
case 2:
ecfg.EMACCoreConfig.ChannelInfo.TxChanEnable = 4;
ecfg.EMACCoreConfig.ChannelInfo.RxChanEnable = 4;
break;
case 3:
ecfg.EMACCoreConfig.ChannelInfo.TxChanEnable = 8;
ecfg.EMACCoreConfig.ChannelInfo.RxChanEnable = 8;
break;
case 4:
ecfg.EMACCoreConfig.ChannelInfo.TxChanEnable = 0x10;
ecfg.EMACCoreConfig.ChannelInfo.RxChanEnable = 0x10;
break;
case 5:
ecfg.EMACCoreConfig.ChannelInfo.TxChanEnable = 0x20;
ecfg.EMACCoreConfig.ChannelInfo.RxChanEnable = 0x20;
break;
}
ecfg.EMACCoreConfig.RxMaxPktPool = 8;
ecfg.EMACCoreConfig.pfcbGetPacket = &GetPacket;
ecfg.EMACCoreConfig.pfcbFreePacket = &FreePacket;
ecfg.EMACCoreConfig.pfcbRxPacket = &RxPacket;
ecfg.EMACCoreConfig.pfcbStatus = &StatusUpdate;
ecfg.EMACCoreConfig.pfcbStatistics = &StatisticsUpdate;
/* selects CPPI RAM for Descriptor memory */
ecfg.EMACCoreConfig.DescBase = EMAC_DESC_BASE_CPPI;
/*
* For this example we'll set our EMAC address to be 00:01:02:03:04:05
* If this were a real driver, we'd have to read the EMAC
* address from where it is stored in hardware (board dependent)
*/
ecfg.EMACCoreConfig.NumOfMacAddrs = 1;
ecfg.EMACCoreConfig.MacAddr = (EMAC_AddrConfig **)
malloc(ecfg.EMACCoreConfig.NumOfMacAddrs * sizeof(EMAC_AddrConfig *));
for (j=0; j<ecfg.EMACCoreConfig.NumOfMacAddrs; j++){
ecfg.EMACCoreConfig.MacAddr[j] = (EMAC_AddrConfig *)malloc(sizeof(EMAC_AddrConfig));
}
for(j=0; (Uint8)j<(ecfg.EMACCoreConfig.NumOfMacAddrs); j++){
addrCfg = ecfg.EMACCoreConfig.MacAddr[j];
addrCfg->ChannelNum = coreNum;
for (i=0; i<6; i++)
{
addrCfg->Addr[i] = j * 0x10 + i + coreNum * 0x30;
}
}
// for( i=0; i<6; i++ ) {
// packet_sourcedata[i] = ecfg.MacAddr[coreNum][i];
// }
/* Enable EMAC in PSC control module */
enableEMAC();
// softreset MAC
EMAC0Regs[0x174/4] = 1;
EMAC0Regs[0x174/4] = 0;
printf("EMAC0Regs: MACCONTROL 0x%x\n", EMAC0Regs[0x160/4]);
printf("EMAC0Regs: MACSTATUS 0x%x\n", EMAC0Regs[0x164/4]);
memset(&emacCore[0], 0, sizeof(EMAC_Core));
memset(&emacPort[0], 0, sizeof(EMAC_Device));
/* Open EMAC instance 0 (RGMII)*/
printf("Calling EMAC_open()\n");
hEMAC = (Handle) &emacPort[0];
i = EMAC_open( 0, (Handle)0x12345678, &ecfg, hEMAC, (Handle)&emacCore[0]);
