"CPE_TRACE_MSG_DMA_CFGERR, 0" error for DMA

[xuedongyang]

I am trying to DMA some data to HRAM for offline analysis in LA1224/LA2160 5G system. However, it kept saying DMA configuration error for this channel.

I checked the channel number, which is not used by anywhere else. Also I checked the HRAM address, which looks good. The DMA length is only 68 bytes. I am not sure what else could be wrong.

Anyone has any suggestion what else I should check. It is very annoying problem that is blocking our debugging activity.

Attached is the DMA statement I am using. Is there anything wrong in the statement? At least, I can compile and run.

[yipingwang]

Please give more information, what code is this? is this part of our LSDK? , which revision are we talking about, etc.?

[xuedongyang]

Hi, Yipingwang,

Thank you for your reply.

Actually we just resolved the issue. The problem is that the AXI address (destination address) in our DMA statement is not 128-bit aligned, which is required in the document "VSPA-16SP ISA-v3.0 Instruction Set Manual for LA1224". After we change the address to 128-bit aligned address, we don't see the problem any more.