NDK / NIMU support for both EMAC interfaces

As far as NIMU is concerned, simultaneous port operations is not tested.

I will let others also chime in.

John hello,

I have the same problem with my board, have you succeed using both network interfcaes of the 6678? Can you send me a reference to such a soulution?

Thanks

Hi ,

We also facing same issue. If u done it , could share us some information or the code to use both EMACs simultaneously.

Regards,

Senthil Kumar

Hi,

I was successful configuring the internal switch to use address learning and forwarding. Both ports can be used like a normal switch now.

These are the main changes I made in nimu_eth.c:

• EmacSend():
  Remove the following line:
      Cppi_setPSFlags (Cppi_DescType_HOST, (Cppi_Desc *)pCppiDesc, (1<<gTxPort));
• EMACInit_Core():
  Replace the lines between "#ifndef SIMULATOR_SUPPORT" and "#else" with:
      platform_get_emac_info(0, &emac_info);
      memcpy(ptr_pvt_data->pdi.bMacAddr, emac_info.mac_address, 6);
• Init_Switch():
  Put the following code at the end of this function:
      // Configure "Learning"/"Forward" state for all 3 ports
      int portNum;
      for (portNum=0; portNum<3; portNum++)
      {
          CSL_CPSW_3GF_ALE_PORTCONTROL alePortControlCfg;
          alePortControlCfg.portState             =   ALE_PORTSTATE_FORWARD;
          alePortControlCfg.dropUntaggedEnable    =   0;
          alePortControlCfg.vidIngressCheckEnable =   0;
          alePortControlCfg.noLearnModeEnable     =   0;
          alePortControlCfg.mcastLimit            =   0;
          alePortControlCfg.bcastLimit            =   0;
          CSL_CPSW_3GF_setAlePortControlReg (portNum, &alePortControlCfg);
      }
• Init_Cpsw():
  Replace the whole function:
  int32_t Init_Cpsw (uint32_t mtu, uint8_t* myMACAddress)
  {                      
      uint8_t portMac[6] = {0x1, 0x1, 0x1, 0x1, 0x1, 0x1};
      Init_MAC(0, portMac, mtu);
  
      portMac[0] = 2;
      Init_MAC(1, portMac, mtu);
  
      /* Setup the Phys by initializing the MDIO - not needed for Simulator*/
      Init_MDIO();
  
      /* Setup the Ethernet switch finally. */
      Init_Switch(mtu);
  
      /* CPSW subsystem setup done. Return success */
      return 0;
  }

In addition, Init_SGMII(0) needs to be called after platform_init(). The platform_init() function in the library only calls Init_SGMII(1) internally.

I hope I didn't forget too much.

Ralf

hi ralf

 i have tried the modification in nimu_eth.c and enable both the SGMii  i am able to ping from both the ports but able to set only one IP add

 i need enable both ports with different IP add. please tell me the modification for that

pratik jain

Hi Pratik,

I have no idea how you could bind two IP addresses to different ports. With my modifications you can think of it like a normal switch with three ports. One of them is connected internally to the core.

Maybe it's possible to configure a second IP address using the legacy configuration API (CfgAddEntry()). But the addresses wouldn't be bound to a specific port. Can you explain what you are trying to do?

Ralf

Ralf,

Thank you for sharing the code, first of all. I just can't understand how different MAC addresses fit the picture. I mean, with normal switch we should have a single MAC for the device and I expected it to be configured for the port0. But instead we configure (different) MACs for the ports 1 and 2 (and port0 MAC is not configurable at all, according to the documentation). I tried to catch it from the GbE SS manual but failed with it.

WBR,

Dmitry

The following changes are actually needed:

* remove (or change) Cppi_setPSFlag() (see SPRUGV9B 2.3.1.3 Table 2-1 for more info);

* remove (or make it conditional or explicitly call CSL_CPSW_3GF_disableAleBypass()) CSL_CPSW_3GF_enableAleBypass() call in Init_Switch() ("When in bypass mode, all packets received by the MAC modules are forwarded only to the host port (port 0)", SPRUGV9B)

* make sure both SGMII ports are initialized properly.

"Normal" packets are generated by NDK and their source MAC fields are set equal to ptr_pvt_data->pdi.bMacAddr, see Emac_Start(). It seems that the values of the MAC[1/2]_SA_[HI/LO] registers are used only in pause frames etc. and both MAC1_SA and MAC2_SA could be programmed to be equal to the MAC address of the device (please, let me know if I'm wrong here).

Regards,

Dmitry