CBDMA in I7-9700 Coffee Lake?

[Luis-SJ]

Does the I7-9700 Coffee Lake still has crystal beach DMA?  It does not show up in Linux with my Nuvo box.

[IsaacQ_Intel]

Hello @Luis-SJ

Thank you for posting on the Intel️® communities. We would be more than glad to help you with your issue.

I will proceed to check the issue internally and post back soon with more details.

Best regards,

Isaac Q. 

Intel Customer Support Technician

[IsaacQ_Intel]

Hello @Luis-SJ

We sincerely appreciate your patience and understanding.

We would like to extend our heartfelt apologies for the delay in our response. Our team has been diligently engaged in extensive research pertaining to your inquiry. Regrettably, we were unable to locate your specific CPU on our list of supported devices.

However, in our unwavering commitment to assist you, we kindly request some additional information from your end:

1.      Could you please furnish us with more comprehensive details regarding your situation?

2.      What specific task or objective are you aiming to achieve with your CPU?

3.      Are you an end-user seeking assistance, or an OEM involved in development work?

Your valuable input will greatly aid us in further investigating this matter and providing you with the most relevant assistance possible.

Best regards,

Isaac Q. 

Intel Customer Support Technician

[Luis-SJ]

Here are some answers to your questions:

1.      Could you please furnish us with more comprehensive details regarding your situation?

When I do an lspci in a NUVO  8108gc  with a  I7-9700 Coffee Lake  CPU.   The Crystal Beach DMA is not listed.

Is also not listed here:

lab@neousys-Nuvo-8108GC-Series:~$ ls /sys/class/dma/
lab@neousys-Nuvo-8108GC-Series:~$

It should be:

lab@tower:~$ ls /sys/class/dma/
dma0chan0 dma1chan0 dma2chan0 dma3chan0 dma4chan0 dma5chan0 dma6chan0 dma7chan0
lab@tower:~$

2.      What specific task or objective are you aiming to achieve with your CPU?

Memory to PCIe DMA transfers.

3.      Are you an end-user seeking assistance, or an OEM involved in development work?

OEM

[IsaacQ_Intel]

Hello @Luis-SJ

Thank you for reply.

I will proceed to check the issue internally and post back soon with more details.

Best regards,

Isaac Q. 

Intel Customer Support Technician

[IsaacQ_Intel]

Hello @Luis-SJ

Thank you for your patience.

According to our research, From the product webpage:

https://www.onlogic.com/nuvo-8108gc/

https://www.neousys-tech.com/en/product/product-lines/edge-ai-gpu-computing/nuvo-8108gc-intel-9th-gen-nvidia-rtx-2080-250w-gpu-computing-platform

The hardware configuration doesn't include the i7-9700 processor; instead, it features the i7-9700E, an embedded processor platform. Furthermore, the NUVO 8108gc is specifically designed as an AI and embedded platform.

For support related to IPS, we recommend reaching out to your dedicated Field Application Engineer (FAE) if available. FAEs are well-equipped to assist the OEM and embedded processor community. If you don't have a designated FAE, please let us know, and we can assist you in finding the appropriate support channel.

Finally, our specialized team consulted with one of our CBDMA experts, who confirmed that if there is no DMA listed in the device, so it is not supported.

Best regards,

Isaac Q. 

Intel Customer Support Technician

[IsaacQ_Intel · Accepted solution]

Hello Luis-SJ

We hope you are doing fine.

Were you able to check the previous post?

According to the data at our disposal, it appears that the device lacks a DMA listing, indicating that DMA support is not available. If you require no further assistance, we will proceed with closing the thread.

Best regards,

Isaac Q. 

Intel Customer Support Technician

[Luis-SJ]

Thanks for your help.  I understand the limitations know.

Best Regards,

Luis

[IsaacQ_Intel]

Hello Luis-SJ

We hope you are doing fine.

We will close this thread. If you need any additional information, submit a new question, as this thread will no longer be monitored.

Thank you for your understanding.

Best regards.

Isaac Q.

Intel Customer Support Technician.