Hello,
We are using interniche, and on trying to send an ethernet packet (udp), it fails in
alt_avalon_sgdma_do_sync_transfer with status 0xC.
I don't understand why SGDMA should fail. The code of the above function is a low level code which does a simple SGDMA transfer through registers.
I see that return status is 0xC , which means - according to table 336 -
2 DESCRIPTOR_COMPLETED R/C (1) (2) A value of 1 indicates that a descriptor was processed to completion.
3 CHAIN_COMPLETED R/C (1) (2) A value of 1 indicates that the core has completed processing the descriptor chain.
What does it mean ? Why SGDMA transfer fails ?
We are using FPGA with a network switch (mac-to-mac), that's why phy detection fails, but still it does not explain why SGDMA transfer fails.
The fpga fw+sw can be found here:
https://drive.google.com/file/d/11x7zyEERC3j0GutZwxHCJHgCwZVhixhD/view?usp=sharing
See log of the baremetal (ucos) application here:
https://pastebin.com/hQcDuCPG
Thank you for any feedback,
ran
